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Prevent alpha_vms_object_p stopping bfd_check_format_matches scan
[deliverable/binutils-gdb.git] / bfd / elf64-ppc.c
CommitLineData
5bd4f169 1/* PowerPC64-specific support for 64-bit ELF.
4b95cf5c 2 Copyright (C) 1999-2014 Free Software Foundation, Inc.
5bd4f169
AM		 3 Written by Linus Nordberg, Swox AB <info@swox.com>,
4 based on elf32-ppc.c by Ian Lance Taylor.
32ca9640 5 Largely rewritten by Alan Modra.
5bd4f169 6
ae9a127f 7 This file is part of BFD, the Binary File Descriptor library.
5bd4f169 8
ae9a127f
NC		 9 This program is free software; you can redistribute it and/or modify
10 it under the terms of the GNU General Public License as published by
cd123cb7 11 the Free Software Foundation; either version 3 of the License, or
ae9a127f 12 (at your option) any later version.
5bd4f169 13
ae9a127f
NC		 14 This program is distributed in the hope that it will be useful,
15 but WITHOUT ANY WARRANTY; without even the implied warranty of
16 MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
17 GNU General Public License for more details.
5bd4f169 18
4ce794b7
AM		 19 You should have received a copy of the GNU General Public License along
20 with this program; if not, write to the Free Software Foundation, Inc.,
3e110533 21 51 Franklin Street - Fifth Floor, Boston, MA 02110-1301, USA. */
5bd4f169 22
cd123cb7 23
4ce794b7
AM		 24/* The 64-bit PowerPC ELF ABI may be found at
25 http://www.linuxbase.org/spec/ELF/ppc64/PPC-elf64abi.txt, and
26 http://www.linuxbase.org/spec/ELF/ppc64/spec/book1.html */
5bd4f169 27
3db64b00 28#include "sysdep.h"
183e98be 29#include <stdarg.h>
5bd4f169 30#include "bfd.h"
5bd4f169
AM		 31#include "bfdlink.h"
32#include "libbfd.h"
33#include "elf-bfd.h"
04c9666a 34#include "elf/ppc64.h"
5d1634d7 35#include "elf64-ppc.h"
58d180e8 36#include "dwarf2.h"
5bd4f169 37
805fc799 38static bfd_reloc_status_type ppc64_elf_ha_reloc
4ce794b7 39 (bfd *, arelent *, asymbol *, void *, asection *, bfd *, char **);
2441e016
AM		 40static bfd_reloc_status_type ppc64_elf_branch_reloc
41 (bfd *, arelent *, asymbol *, void *, asection *, bfd *, char **);
805fc799 42static bfd_reloc_status_type ppc64_elf_brtaken_reloc
4ce794b7 43 (bfd *, arelent *, asymbol *, void *, asection *, bfd *, char **);
805fc799 44static bfd_reloc_status_type ppc64_elf_sectoff_reloc
4ce794b7 45 (bfd *, arelent *, asymbol *, void *, asection *, bfd *, char **);
805fc799 46static bfd_reloc_status_type ppc64_elf_sectoff_ha_reloc
4ce794b7 47 (bfd *, arelent *, asymbol *, void *, asection *, bfd *, char **);
805fc799 48static bfd_reloc_status_type ppc64_elf_toc_reloc
4ce794b7 49 (bfd *, arelent *, asymbol *, void *, asection *, bfd *, char **);
805fc799 50static bfd_reloc_status_type ppc64_elf_toc_ha_reloc
4ce794b7 51 (bfd *, arelent *, asymbol *, void *, asection *, bfd *, char **);
805fc799 52static bfd_reloc_status_type ppc64_elf_toc64_reloc
4ce794b7 53 (bfd *, arelent *, asymbol *, void *, asection *, bfd *, char **);
805fc799 54static bfd_reloc_status_type ppc64_elf_unhandled_reloc
4ce794b7 55 (bfd *, arelent *, asymbol *, void *, asection *, bfd *, char **);
2441e016 56static bfd_vma opd_entry_value
aef36ac1 57 (asection *, bfd_vma, asection **, bfd_vma *, bfd_boolean);
5bd4f169 58
6d00b590 59#define TARGET_LITTLE_SYM powerpc_elf64_le_vec
ad8e1ba5 60#define TARGET_LITTLE_NAME "elf64-powerpcle"
6d00b590 61#define TARGET_BIG_SYM powerpc_elf64_vec
ad8e1ba5
AM		 62#define TARGET_BIG_NAME "elf64-powerpc"
63#define ELF_ARCH bfd_arch_powerpc
ae95ffa6 64#define ELF_TARGET_ID PPC64_ELF_DATA
ad8e1ba5
AM		 65#define ELF_MACHINE_CODE EM_PPC64
66#define ELF_MAXPAGESIZE 0x10000
24718e3b 67#define ELF_COMMONPAGESIZE 0x1000
ad8e1ba5
AM		 68#define elf_info_to_howto ppc64_elf_info_to_howto
69
70#define elf_backend_want_got_sym 0
71#define elf_backend_want_plt_sym 0
72#define elf_backend_plt_alignment 3
73#define elf_backend_plt_not_loaded 1
ad8e1ba5 74#define elf_backend_got_header_size 8
ad8e1ba5
AM		 75#define elf_backend_can_gc_sections 1
76#define elf_backend_can_refcount 1
77#define elf_backend_rela_normal 1
6bfdb61b 78#define elf_backend_default_execstack 0
ad8e1ba5 79
e717da7e 80#define bfd_elf64_mkobject ppc64_elf_mkobject
ad8e1ba5 81#define bfd_elf64_bfd_reloc_type_lookup ppc64_elf_reloc_type_lookup
aa374f67 82#define bfd_elf64_bfd_reloc_name_lookup ppc64_elf_reloc_name_lookup
ee67d69a
AM		 83#define bfd_elf64_bfd_merge_private_bfd_data ppc64_elf_merge_private_bfd_data
84#define bfd_elf64_bfd_print_private_bfd_data ppc64_elf_print_private_bfd_data
ad8e1ba5
AM		 85#define bfd_elf64_new_section_hook ppc64_elf_new_section_hook
86#define bfd_elf64_bfd_link_hash_table_create ppc64_elf_link_hash_table_create
90e3cdf2 87#define bfd_elf64_get_synthetic_symtab ppc64_elf_get_synthetic_symtab
aa374f67 88#define bfd_elf64_bfd_link_just_syms ppc64_elf_link_just_syms
ad8e1ba5
AM		 89
90#define elf_backend_object_p ppc64_elf_object_p
d37c89e5
AM		 91#define elf_backend_grok_prstatus ppc64_elf_grok_prstatus
92#define elf_backend_grok_psinfo ppc64_elf_grok_psinfo
183e98be 93#define elf_backend_write_core_note ppc64_elf_write_core_note
ad8e1ba5
AM		 94#define elf_backend_create_dynamic_sections ppc64_elf_create_dynamic_sections
95#define elf_backend_copy_indirect_symbol ppc64_elf_copy_indirect_symbol
555cd476 96#define elf_backend_add_symbol_hook ppc64_elf_add_symbol_hook
f6c7c3e8 97#define elf_backend_check_directives ppc64_elf_before_check_relocs
e5034e59 98#define elf_backend_notice_as_needed ppc64_elf_notice_as_needed
8387904d 99#define elf_backend_archive_symbol_lookup ppc64_elf_archive_symbol_lookup
ad8e1ba5 100#define elf_backend_check_relocs ppc64_elf_check_relocs
74f0fb50 101#define elf_backend_gc_keep ppc64_elf_gc_keep
64d03ab5 102#define elf_backend_gc_mark_dynamic_ref ppc64_elf_gc_mark_dynamic_ref
ad8e1ba5
AM		 103#define elf_backend_gc_mark_hook ppc64_elf_gc_mark_hook
104#define elf_backend_gc_sweep_hook ppc64_elf_gc_sweep_hook
105#define elf_backend_adjust_dynamic_symbol ppc64_elf_adjust_dynamic_symbol
106#define elf_backend_hide_symbol ppc64_elf_hide_symbol
9f296da3 107#define elf_backend_maybe_function_sym ppc64_elf_maybe_function_sym
ad8e1ba5
AM		 108#define elf_backend_always_size_sections ppc64_elf_func_desc_adjust
109#define elf_backend_size_dynamic_sections ppc64_elf_size_dynamic_sections
a345bc8d 110#define elf_backend_hash_symbol ppc64_elf_hash_symbol
74541ad4 111#define elf_backend_init_index_section _bfd_elf_init_2_index_sections
60124e18 112#define elf_backend_action_discarded ppc64_elf_action_discarded
ad8e1ba5
AM		 113#define elf_backend_relocate_section ppc64_elf_relocate_section
114#define elf_backend_finish_dynamic_symbol ppc64_elf_finish_dynamic_symbol
115#define elf_backend_reloc_type_class ppc64_elf_reloc_type_class
116#define elf_backend_finish_dynamic_sections ppc64_elf_finish_dynamic_sections
754021d0 117#define elf_backend_link_output_symbol_hook ppc64_elf_output_symbol_hook
29ef7005 118#define elf_backend_special_sections ppc64_elf_special_sections
6911b7dc 119#define elf_backend_merge_symbol_attribute ppc64_elf_merge_symbol_attribute
ad8e1ba5 120
5bd4f169
AM		 121/* The name of the dynamic interpreter. This is put in the .interp
122 section. */
123#define ELF_DYNAMIC_INTERPRETER "/usr/lib/ld.so.1"
124
125/* The size in bytes of an entry in the procedure linkage table. */
b9e5796b 126#define PLT_ENTRY_SIZE(htab) (htab->opd_abi ? 24 : 8)
5bd4f169
AM		 127
128/* The initial size of the plt reserved for the dynamic linker. */
b9e5796b 129#define PLT_INITIAL_ENTRY_SIZE(htab) (htab->opd_abi ? 24 : 16)
5bd4f169 130
a078d95a
AM		 131/* Offsets to some stack save slots. */
132#define STK_LR 16
133#define STK_TOC(htab) (htab->opd_abi ? 40 : 24)
eb8d7fda 134/* This one is dodgy. ELFv2 does not have a linker word, so use the
a078d95a
AM		 135 CR save slot. Used only by optimised __tls_get_addr call stub,
136 relying on __tls_get_addr_opt not saving CR.. */
137#define STK_LINKER(htab) (htab->opd_abi ? 32 : 8)
138
5bd4f169 139/* TOC base pointers offset from start of TOC. */
411e1bfb
AM		 140#define TOC_BASE_OFF 0x8000
141
142/* Offset of tp and dtp pointers from start of TLS block. */
143#define TP_OFFSET 0x7000
144#define DTP_OFFSET 0x8000
5bd4f169 145
ad8e1ba5
AM		 146/* .plt call stub instructions. The normal stub is like this, but
147 sometimes the .plt entry crosses a 64k boundary and we need to
71a39c98 148 insert an addi to adjust r11. */
a078d95a 149#define STD_R2_0R1 0xf8410000 /* std %r2,0+40(%r1) */
71a39c98
AM		 150#define ADDIS_R11_R2 0x3d620000 /* addis %r11,%r2,xxx@ha */
151#define LD_R12_0R11 0xe98b0000 /* ld %r12,xxx+0@l(%r11) */
152#define MTCTR_R12 0x7d8903a6 /* mtctr %r12 */
153#define LD_R2_0R11 0xe84b0000 /* ld %r2,xxx+8@l(%r11) */
154#define LD_R11_0R11 0xe96b0000 /* ld %r11,xxx+16@l(%r11) */
5d1634d7
AM		 155#define BCTR 0x4e800420 /* bctr */
156
71a39c98 157#define ADDI_R11_R11 0x396b0000 /* addi %r11,%r11,off@l */
ad8e1ba5
AM		 158#define ADDIS_R2_R2 0x3c420000 /* addis %r2,%r2,off@ha */
159#define ADDI_R2_R2 0x38420000 /* addi %r2,%r2,off@l */
160
71a39c98
AM		 161#define XOR_R2_R12_R12 0x7d826278 /* xor %r2,%r12,%r12 */
162#define ADD_R11_R11_R2 0x7d6b1214 /* add %r11,%r11,%r2 */
163#define XOR_R11_R12_R12 0x7d8b6278 /* xor %r11,%r12,%r12 */
794e51c0
AM		 164#define ADD_R2_R2_R11 0x7c425a14 /* add %r2,%r2,%r11 */
165#define CMPLDI_R2_0 0x28220000 /* cmpldi %r2,0 */
166#define BNECTR 0x4ca20420 /* bnectr+ */
167#define BNECTR_P4 0x4ce20420 /* bnectr+ */
168
71a39c98 169#define LD_R12_0R2 0xe9820000 /* ld %r12,xxx+0(%r2) */
ac2df442
AM		 170#define LD_R11_0R2 0xe9620000 /* ld %r11,xxx+0(%r2) */
171#define LD_R2_0R2 0xe8420000 /* ld %r2,xxx+0(%r2) */
172
a078d95a 173#define LD_R2_0R1 0xe8410000 /* ld %r2,0(%r1) */
ad8e1ba5 174
397998fc 175#define ADDIS_R12_R2 0x3d820000 /* addis %r12,%r2,xxx@ha */
a345bc8d
AM		 176#define ADDIS_R12_R12 0x3d8c0000 /* addis %r12,%r12,xxx@ha */
177#define LD_R12_0R12 0xe98c0000 /* ld %r12,xxx@l(%r12) */
178
ee4bf8d2 179/* glink call stub instructions. We enter with the index in R0. */
ad8e1ba5 180#define GLINK_CALL_STUB_SIZE (16*4)
ee4bf8d2
AM		 181 /* 0: */
182 /* .quad plt0-1f */
183 /* __glink: */
184#define MFLR_R12 0x7d8802a6 /* mflr %12 */
185#define BCL_20_31 0x429f0005 /* bcl 20,31,1f */
186 /* 1: */
187#define MFLR_R11 0x7d6802a6 /* mflr %11 */
71a39c98 188 /* ld %2,(0b-1b)(%11) */
ee4bf8d2 189#define MTLR_R12 0x7d8803a6 /* mtlr %12 */
71a39c98
AM		 190#define ADD_R11_R2_R11 0x7d625a14 /* add %11,%2,%11 */
191 /* ld %12,0(%11) */
192 /* ld %2,8(%11) */
193 /* mtctr %12 */
194 /* ld %11,16(%11) */
ee4bf8d2 195 /* bctr */
b9e5796b
AM		 196#define MFLR_R0 0x7c0802a6 /* mflr %r0 */
197#define MTLR_R0 0x7c0803a6 /* mtlr %r0 */
198#define SUB_R12_R12_R11 0x7d8b6050 /* subf %r12,%r11,%r12 */
199#define ADDI_R0_R12 0x380c0000 /* addi %r0,%r12,0 */
200#define SRDI_R0_R0_2 0x7800f082 /* rldicl %r0,%r0,62,2 */
5d1634d7
AM		 201
202/* Pad with this. */
203#define NOP 0x60000000
204
721956f4
AM		 205/* Some other nops. */
206#define CROR_151515 0x4def7b82
207#define CROR_313131 0x4ffffb82
208
cedb70c5 209/* .glink entries for the first 32k functions are two instructions. */
5d1634d7
AM		 210#define LI_R0_0 0x38000000 /* li %r0,0 */
211#define B_DOT 0x48000000 /* b . */
212
213/* After that, we need two instructions to load the index, followed by
214 a branch. */
215#define LIS_R0_0 0x3c000000 /* lis %r0,0 */
10ed1bba 216#define ORI_R0_R0_0 0x60000000 /* ori %r0,%r0,0 */
41bd81ab 217
deb0e272
AM		 218/* Instructions used by the save and restore reg functions. */
219#define STD_R0_0R1 0xf8010000 /* std %r0,0(%r1) */
220#define STD_R0_0R12 0xf80c0000 /* std %r0,0(%r12) */
221#define LD_R0_0R1 0xe8010000 /* ld %r0,0(%r1) */
222#define LD_R0_0R12 0xe80c0000 /* ld %r0,0(%r12) */
82bd7b59
AM		 223#define STFD_FR0_0R1 0xd8010000 /* stfd %fr0,0(%r1) */
224#define LFD_FR0_0R1 0xc8010000 /* lfd %fr0,0(%r1) */
deb0e272
AM		 225#define LI_R12_0 0x39800000 /* li %r12,0 */
226#define STVX_VR0_R12_R0 0x7c0c01ce /* stvx %v0,%r12,%r0 */
227#define LVX_VR0_R12_R0 0x7c0c00ce /* lvx %v0,%r12,%r0 */
228#define MTLR_R0 0x7c0803a6 /* mtlr %r0 */
82bd7b59
AM		 229#define BLR 0x4e800020 /* blr */
230
41bd81ab
AM		 231/* Since .opd is an array of descriptors and each entry will end up
232 with identical R_PPC64_RELATIVE relocs, there is really no need to
233 propagate .opd relocs; The dynamic linker should be taught to
1e2f5b6e 234 relocate .opd without reloc entries. */
41bd81ab
AM		 235#ifndef NO_OPD_RELOCS
236#define NO_OPD_RELOCS 0
237#endif
810d4e75
AM		 238
239static inline int
240abiversion (bfd *abfd)
241{
242 return elf_elfheader (abfd)->e_flags & EF_PPC64_ABI;
243}
244
245static inline void
246set_abiversion (bfd *abfd, int ver)
247{
248 elf_elfheader (abfd)->e_flags &= ~EF_PPC64_ABI;
249 elf_elfheader (abfd)->e_flags |= ver & EF_PPC64_ABI;
250}
5bd4f169 251\f
f5e87a1d 252#define ONES(n) (((bfd_vma) 1 << ((n) - 1) << 1) - 1)
b34976b6 253
5bd4f169 254/* Relocation HOWTO's. */
04c9666a 255static reloc_howto_type *ppc64_elf_howto_table[(int) R_PPC64_max];
5bd4f169
AM		 256
257static reloc_howto_type ppc64_elf_howto_raw[] = {
258 /* This reloc does nothing. */
259 HOWTO (R_PPC64_NONE, /* type */
260 0, /* rightshift */
411e1bfb
AM		 261 2, /* size (0 = byte, 1 = short, 2 = long) */
262 32, /* bitsize */
b34976b6 263 FALSE, /* pc_relative */
5bd4f169 264 0, /* bitpos */
f5e87a1d 265 complain_overflow_dont, /* complain_on_overflow */
5bd4f169
AM		 266 bfd_elf_generic_reloc, /* special_function */
267 "R_PPC64_NONE", /* name */
b34976b6 268 FALSE, /* partial_inplace */
d006db6c 269 0, /* src_mask */
5bd4f169 270 0, /* dst_mask */
b34976b6 271 FALSE), /* pcrel_offset */
5bd4f169
AM		 272
273 /* A standard 32 bit relocation. */
274 HOWTO (R_PPC64_ADDR32, /* type */
275 0, /* rightshift */
276 2, /* size (0 = byte, 1 = short, 2 = long) */
277 32, /* bitsize */
b34976b6 278 FALSE, /* pc_relative */
5bd4f169
AM		 279 0, /* bitpos */
280 complain_overflow_bitfield, /* complain_on_overflow */
281 bfd_elf_generic_reloc, /* special_function */
282 "R_PPC64_ADDR32", /* name */
b34976b6 283 FALSE, /* partial_inplace */
5bd4f169
AM		 284 0, /* src_mask */
285 0xffffffff, /* dst_mask */
b34976b6 286 FALSE), /* pcrel_offset */
5bd4f169
AM		 287
288 /* An absolute 26 bit branch; the lower two bits must be zero.
289 FIXME: we don't check that, we just clear them. */
290 HOWTO (R_PPC64_ADDR24, /* type */
291 0, /* rightshift */
292 2, /* size (0 = byte, 1 = short, 2 = long) */
293 26, /* bitsize */
b34976b6 294 FALSE, /* pc_relative */
5bd4f169
AM		 295 0, /* bitpos */
296 complain_overflow_bitfield, /* complain_on_overflow */
297 bfd_elf_generic_reloc, /* special_function */
298 "R_PPC64_ADDR24", /* name */
b34976b6 299 FALSE, /* partial_inplace */
d006db6c 300 0, /* src_mask */
f5e87a1d 301 0x03fffffc, /* dst_mask */
b34976b6 302 FALSE), /* pcrel_offset */
5bd4f169
AM		 303
304 /* A standard 16 bit relocation. */
305 HOWTO (R_PPC64_ADDR16, /* type */
306 0, /* rightshift */
307 1, /* size (0 = byte, 1 = short, 2 = long) */
308 16, /* bitsize */
b34976b6 309 FALSE, /* pc_relative */
5bd4f169
AM		 310 0, /* bitpos */
311 complain_overflow_bitfield, /* complain_on_overflow */
312 bfd_elf_generic_reloc, /* special_function */
313 "R_PPC64_ADDR16", /* name */
b34976b6 314 FALSE, /* partial_inplace */
5bd4f169
AM		 315 0, /* src_mask */
316 0xffff, /* dst_mask */
b34976b6 317 FALSE), /* pcrel_offset */
5bd4f169
AM		 318
319 /* A 16 bit relocation without overflow. */
320 HOWTO (R_PPC64_ADDR16_LO, /* type */
321 0, /* rightshift */
322 1, /* size (0 = byte, 1 = short, 2 = long) */
323 16, /* bitsize */
b34976b6 324 FALSE, /* pc_relative */
5bd4f169
AM		 325 0, /* bitpos */
326 complain_overflow_dont,/* complain_on_overflow */
327 bfd_elf_generic_reloc, /* special_function */
328 "R_PPC64_ADDR16_LO", /* name */
b34976b6 329 FALSE, /* partial_inplace */
5bd4f169
AM		 330 0, /* src_mask */
331 0xffff, /* dst_mask */
b34976b6 332 FALSE), /* pcrel_offset */
5bd4f169
AM		 333
334 /* Bits 16-31 of an address. */
335 HOWTO (R_PPC64_ADDR16_HI, /* type */
336 16, /* rightshift */
337 1, /* size (0 = byte, 1 = short, 2 = long) */
338 16, /* bitsize */
b34976b6 339 FALSE, /* pc_relative */
5bd4f169 340 0, /* bitpos */
f9c6b907 341 complain_overflow_signed, /* complain_on_overflow */
5bd4f169
AM		 342 bfd_elf_generic_reloc, /* special_function */
343 "R_PPC64_ADDR16_HI", /* name */
b34976b6 344 FALSE, /* partial_inplace */
5bd4f169
AM		 345 0, /* src_mask */
346 0xffff, /* dst_mask */
b34976b6 347 FALSE), /* pcrel_offset */
5bd4f169
AM		 348
349 /* Bits 16-31 of an address, plus 1 if the contents of the low 16
350 bits, treated as a signed number, is negative. */
351 HOWTO (R_PPC64_ADDR16_HA, /* type */
352 16, /* rightshift */
353 1, /* size (0 = byte, 1 = short, 2 = long) */
354 16, /* bitsize */
b34976b6 355 FALSE, /* pc_relative */
5bd4f169 356 0, /* bitpos */
f9c6b907 357 complain_overflow_signed, /* complain_on_overflow */
805fc799 358 ppc64_elf_ha_reloc, /* special_function */
5bd4f169 359 "R_PPC64_ADDR16_HA", /* name */
b34976b6 360 FALSE, /* partial_inplace */
5bd4f169
AM		 361 0, /* src_mask */
362 0xffff, /* dst_mask */
b34976b6 363 FALSE), /* pcrel_offset */
5bd4f169
AM		 364
365 /* An absolute 16 bit branch; the lower two bits must be zero.
366 FIXME: we don't check that, we just clear them. */
367 HOWTO (R_PPC64_ADDR14, /* type */
368 0, /* rightshift */
369 2, /* size (0 = byte, 1 = short, 2 = long) */
370 16, /* bitsize */
b34976b6 371 FALSE, /* pc_relative */
5bd4f169 372 0, /* bitpos */
b80eed39 373 complain_overflow_signed, /* complain_on_overflow */
2441e016 374 ppc64_elf_branch_reloc, /* special_function */
5bd4f169 375 "R_PPC64_ADDR14", /* name */
b34976b6 376 FALSE, /* partial_inplace */
d006db6c 377 0, /* src_mask */
f5e87a1d 378 0x0000fffc, /* dst_mask */
b34976b6 379 FALSE), /* pcrel_offset */
5bd4f169
AM		 380
381 /* An absolute 16 bit branch, for which bit 10 should be set to
382 indicate that the branch is expected to be taken. The lower two
383 bits must be zero. */
384 HOWTO (R_PPC64_ADDR14_BRTAKEN, /* type */
385 0, /* rightshift */
386 2, /* size (0 = byte, 1 = short, 2 = long) */
387 16, /* bitsize */
b34976b6 388 FALSE, /* pc_relative */
5bd4f169 389 0, /* bitpos */
b80eed39 390 complain_overflow_signed, /* complain_on_overflow */
805fc799 391 ppc64_elf_brtaken_reloc, /* special_function */
5bd4f169 392 "R_PPC64_ADDR14_BRTAKEN",/* name */
b34976b6 393 FALSE, /* partial_inplace */
d006db6c 394 0, /* src_mask */
f5e87a1d 395 0x0000fffc, /* dst_mask */
b34976b6 396 FALSE), /* pcrel_offset */
5bd4f169
AM		 397
398 /* An absolute 16 bit branch, for which bit 10 should be set to
399 indicate that the branch is not expected to be taken. The lower
400 two bits must be zero. */
401 HOWTO (R_PPC64_ADDR14_BRNTAKEN, /* type */
402 0, /* rightshift */
403 2, /* size (0 = byte, 1 = short, 2 = long) */
404 16, /* bitsize */
b34976b6 405 FALSE, /* pc_relative */
5bd4f169 406 0, /* bitpos */
b80eed39 407 complain_overflow_signed, /* complain_on_overflow */
805fc799 408 ppc64_elf_brtaken_reloc, /* special_function */
5bd4f169 409 "R_PPC64_ADDR14_BRNTAKEN",/* name */
b34976b6 410 FALSE, /* partial_inplace */
d006db6c 411 0, /* src_mask */
f5e87a1d 412 0x0000fffc, /* dst_mask */
b34976b6 413 FALSE), /* pcrel_offset */
5bd4f169
AM		 414
415 /* A relative 26 bit branch; the lower two bits must be zero. */
416 HOWTO (R_PPC64_REL24, /* type */
417 0, /* rightshift */
418 2, /* size (0 = byte, 1 = short, 2 = long) */
419 26, /* bitsize */
b34976b6 420 TRUE, /* pc_relative */
5bd4f169
AM		 421 0, /* bitpos */
422 complain_overflow_signed, /* complain_on_overflow */
2441e016 423 ppc64_elf_branch_reloc, /* special_function */
5bd4f169 424 "R_PPC64_REL24", /* name */
b34976b6 425 FALSE, /* partial_inplace */
d006db6c 426 0, /* src_mask */
f5e87a1d 427 0x03fffffc, /* dst_mask */
b34976b6 428 TRUE), /* pcrel_offset */
5bd4f169
AM		 429
430 /* A relative 16 bit branch; the lower two bits must be zero. */
431 HOWTO (R_PPC64_REL14, /* type */
432 0, /* rightshift */
433 2, /* size (0 = byte, 1 = short, 2 = long) */
434 16, /* bitsize */
b34976b6 435 TRUE, /* pc_relative */
5bd4f169
AM		 436 0, /* bitpos */
437 complain_overflow_signed, /* complain_on_overflow */
2441e016 438 ppc64_elf_branch_reloc, /* special_function */
5bd4f169 439 "R_PPC64_REL14", /* name */
b34976b6 440 FALSE, /* partial_inplace */
d006db6c 441 0, /* src_mask */
f5e87a1d 442 0x0000fffc, /* dst_mask */
b34976b6 443 TRUE), /* pcrel_offset */
5bd4f169
AM		 444
445 /* A relative 16 bit branch. Bit 10 should be set to indicate that
446 the branch is expected to be taken. The lower two bits must be
447 zero. */
448 HOWTO (R_PPC64_REL14_BRTAKEN, /* type */
449 0, /* rightshift */
450 2, /* size (0 = byte, 1 = short, 2 = long) */
451 16, /* bitsize */
b34976b6 452 TRUE, /* pc_relative */
5bd4f169
AM		 453 0, /* bitpos */
454 complain_overflow_signed, /* complain_on_overflow */
805fc799 455 ppc64_elf_brtaken_reloc, /* special_function */
5bd4f169 456 "R_PPC64_REL14_BRTAKEN", /* name */
b34976b6 457 FALSE, /* partial_inplace */
d006db6c 458 0, /* src_mask */
f5e87a1d 459 0x0000fffc, /* dst_mask */
b34976b6 460 TRUE), /* pcrel_offset */
5bd4f169
AM		 461
462 /* A relative 16 bit branch. Bit 10 should be set to indicate that
463 the branch is not expected to be taken. The lower two bits must
464 be zero. */
465 HOWTO (R_PPC64_REL14_BRNTAKEN, /* type */
466 0, /* rightshift */
467 2, /* size (0 = byte, 1 = short, 2 = long) */
468 16, /* bitsize */
b34976b6 469 TRUE, /* pc_relative */
5bd4f169
AM		 470 0, /* bitpos */
471 complain_overflow_signed, /* complain_on_overflow */
805fc799 472 ppc64_elf_brtaken_reloc, /* special_function */
5bd4f169 473 "R_PPC64_REL14_BRNTAKEN",/* name */
b34976b6 474 FALSE, /* partial_inplace */
d006db6c 475 0, /* src_mask */
f5e87a1d 476 0x0000fffc, /* dst_mask */
b34976b6 477 TRUE), /* pcrel_offset */
5bd4f169
AM		 478
479 /* Like R_PPC64_ADDR16, but referring to the GOT table entry for the
480 symbol. */
481 HOWTO (R_PPC64_GOT16, /* type */
482 0, /* rightshift */
483 1, /* size (0 = byte, 1 = short, 2 = long) */
484 16, /* bitsize */
b34976b6 485 FALSE, /* pc_relative */
5bd4f169
AM		 486 0, /* bitpos */
487 complain_overflow_signed, /* complain_on_overflow */
805fc799 488 ppc64_elf_unhandled_reloc, /* special_function */
5bd4f169 489 "R_PPC64_GOT16", /* name */
b34976b6 490 FALSE, /* partial_inplace */
5bd4f169
AM		 491 0, /* src_mask */
492 0xffff, /* dst_mask */
b34976b6 493 FALSE), /* pcrel_offset */
5bd4f169
AM		 494
495 /* Like R_PPC64_ADDR16_LO, but referring to the GOT table entry for
496 the symbol. */
497 HOWTO (R_PPC64_GOT16_LO, /* type */
498 0, /* rightshift */
499 1, /* size (0 = byte, 1 = short, 2 = long) */
500 16, /* bitsize */
b34976b6 501 FALSE, /* pc_relative */
5bd4f169
AM		 502 0, /* bitpos */
503 complain_overflow_dont, /* complain_on_overflow */
805fc799 504 ppc64_elf_unhandled_reloc, /* special_function */
5bd4f169 505 "R_PPC64_GOT16_LO", /* name */
b34976b6 506 FALSE, /* partial_inplace */
5bd4f169
AM		 507 0, /* src_mask */
508 0xffff, /* dst_mask */
b34976b6 509 FALSE), /* pcrel_offset */
5bd4f169
AM		 510
511 /* Like R_PPC64_ADDR16_HI, but referring to the GOT table entry for
512 the symbol. */
513 HOWTO (R_PPC64_GOT16_HI, /* type */
514 16, /* rightshift */
515 1, /* size (0 = byte, 1 = short, 2 = long) */
516 16, /* bitsize */
b34976b6 517 FALSE, /* pc_relative */
5bd4f169 518 0, /* bitpos */
f9c6b907 519 complain_overflow_signed,/* complain_on_overflow */
805fc799 520 ppc64_elf_unhandled_reloc, /* special_function */
5bd4f169 521 "R_PPC64_GOT16_HI", /* name */
b34976b6 522 FALSE, /* partial_inplace */
5bd4f169
AM		 523 0, /* src_mask */
524 0xffff, /* dst_mask */
b34976b6 525 FALSE), /* pcrel_offset */
5bd4f169
AM		 526
527 /* Like R_PPC64_ADDR16_HA, but referring to the GOT table entry for
528 the symbol. */
529 HOWTO (R_PPC64_GOT16_HA, /* type */
530 16, /* rightshift */
531 1, /* size (0 = byte, 1 = short, 2 = long) */
532 16, /* bitsize */
b34976b6 533 FALSE, /* pc_relative */
5bd4f169 534 0, /* bitpos */
f9c6b907 535 complain_overflow_signed,/* complain_on_overflow */
805fc799 536 ppc64_elf_unhandled_reloc, /* special_function */
5bd4f169 537 "R_PPC64_GOT16_HA", /* name */
b34976b6 538 FALSE, /* partial_inplace */
5bd4f169
AM		 539 0, /* src_mask */
540 0xffff, /* dst_mask */
b34976b6 541 FALSE), /* pcrel_offset */
5bd4f169
AM		 542
543 /* This is used only by the dynamic linker. The symbol should exist
544 both in the object being run and in some shared library. The
545 dynamic linker copies the data addressed by the symbol from the
546 shared library into the object, because the object being
547 run has to have the data at some particular address. */
548 HOWTO (R_PPC64_COPY, /* type */
549 0, /* rightshift */
f5e87a1d
AM		 550 0, /* this one is variable size */
551 0, /* bitsize */
b34976b6 552 FALSE, /* pc_relative */
5bd4f169 553 0, /* bitpos */
f5e87a1d
AM		 554 complain_overflow_dont, /* complain_on_overflow */
555 ppc64_elf_unhandled_reloc, /* special_function */
5bd4f169 556 "R_PPC64_COPY", /* name */
b34976b6 557 FALSE, /* partial_inplace */
5bd4f169
AM		 558 0, /* src_mask */
559 0, /* dst_mask */
b34976b6 560 FALSE), /* pcrel_offset */
5bd4f169
AM		 561
562 /* Like R_PPC64_ADDR64, but used when setting global offset table
563 entries. */
564 HOWTO (R_PPC64_GLOB_DAT, /* type */
565 0, /* rightshift */
566 4, /* size (0=byte, 1=short, 2=long, 4=64 bits) */
567 64, /* bitsize */
b34976b6 568 FALSE, /* pc_relative */
5bd4f169
AM		 569 0, /* bitpos */
570 complain_overflow_dont, /* complain_on_overflow */
805fc799 571 ppc64_elf_unhandled_reloc, /* special_function */
5bd4f169 572 "R_PPC64_GLOB_DAT", /* name */
b34976b6 573 FALSE, /* partial_inplace */
5bd4f169 574 0, /* src_mask */
f5e87a1d 575 ONES (64), /* dst_mask */
b34976b6 576 FALSE), /* pcrel_offset */
5bd4f169
AM		 577
578 /* Created by the link editor. Marks a procedure linkage table
579 entry for a symbol. */
580 HOWTO (R_PPC64_JMP_SLOT, /* type */
581 0, /* rightshift */
582 0, /* size (0 = byte, 1 = short, 2 = long) */
583 0, /* bitsize */
b34976b6 584 FALSE, /* pc_relative */
5bd4f169
AM		 585 0, /* bitpos */
586 complain_overflow_dont, /* complain_on_overflow */
805fc799 587 ppc64_elf_unhandled_reloc, /* special_function */
5bd4f169 588 "R_PPC64_JMP_SLOT", /* name */
b34976b6 589 FALSE, /* partial_inplace */
5bd4f169
AM		 590 0, /* src_mask */
591 0, /* dst_mask */
b34976b6 592 FALSE), /* pcrel_offset */
5bd4f169
AM		 593
594 /* Used only by the dynamic linker. When the object is run, this
595 doubleword64 is set to the load address of the object, plus the
596 addend. */
597 HOWTO (R_PPC64_RELATIVE, /* type */
598 0, /* rightshift */
599 4, /* size (0=byte, 1=short, 2=long, 4=64 bits) */
600 64, /* bitsize */
b34976b6 601 FALSE, /* pc_relative */
5bd4f169
AM		 602 0, /* bitpos */
603 complain_overflow_dont, /* complain_on_overflow */
604 bfd_elf_generic_reloc, /* special_function */
605 "R_PPC64_RELATIVE", /* name */
b34976b6 606 FALSE, /* partial_inplace */
5bd4f169 607 0, /* src_mask */
f5e87a1d 608 ONES (64), /* dst_mask */
b34976b6 609 FALSE), /* pcrel_offset */
5bd4f169
AM		 610
611 /* Like R_PPC64_ADDR32, but may be unaligned. */
612 HOWTO (R_PPC64_UADDR32, /* type */
613 0, /* rightshift */
614 2, /* size (0 = byte, 1 = short, 2 = long) */
615 32, /* bitsize */
b34976b6 616 FALSE, /* pc_relative */
5bd4f169
AM		 617 0, /* bitpos */
618 complain_overflow_bitfield, /* complain_on_overflow */
619 bfd_elf_generic_reloc, /* special_function */
620 "R_PPC64_UADDR32", /* name */
b34976b6 621 FALSE, /* partial_inplace */
5bd4f169
AM		 622 0, /* src_mask */
623 0xffffffff, /* dst_mask */
b34976b6 624 FALSE), /* pcrel_offset */
5bd4f169
AM		 625
626 /* Like R_PPC64_ADDR16, but may be unaligned. */
627 HOWTO (R_PPC64_UADDR16, /* type */
628 0, /* rightshift */
629 1, /* size (0 = byte, 1 = short, 2 = long) */
630 16, /* bitsize */
b34976b6 631 FALSE, /* pc_relative */
5bd4f169
AM		 632 0, /* bitpos */
633 complain_overflow_bitfield, /* complain_on_overflow */
634 bfd_elf_generic_reloc, /* special_function */
635 "R_PPC64_UADDR16", /* name */
b34976b6 636 FALSE, /* partial_inplace */
5bd4f169
AM		 637 0, /* src_mask */
638 0xffff, /* dst_mask */
b34976b6 639 FALSE), /* pcrel_offset */
5bd4f169
AM		 640
641 /* 32-bit PC relative. */
642 HOWTO (R_PPC64_REL32, /* type */
643 0, /* rightshift */
644 2, /* size (0 = byte, 1 = short, 2 = long) */
645 32, /* bitsize */
b34976b6 646 TRUE, /* pc_relative */
5bd4f169 647 0, /* bitpos */
5bd4f169
AM		 648 complain_overflow_signed, /* complain_on_overflow */
649 bfd_elf_generic_reloc, /* special_function */
650 "R_PPC64_REL32", /* name */
b34976b6 651 FALSE, /* partial_inplace */
5bd4f169
AM		 652 0, /* src_mask */
653 0xffffffff, /* dst_mask */
b34976b6 654 TRUE), /* pcrel_offset */
5bd4f169 655
10ed1bba 656 /* 32-bit relocation to the symbol's procedure linkage table. */
5bd4f169
AM		 657 HOWTO (R_PPC64_PLT32, /* type */
658 0, /* rightshift */
659 2, /* size (0 = byte, 1 = short, 2 = long) */
660 32, /* bitsize */
b34976b6 661 FALSE, /* pc_relative */
5bd4f169
AM		 662 0, /* bitpos */
663 complain_overflow_bitfield, /* complain_on_overflow */
805fc799 664 ppc64_elf_unhandled_reloc, /* special_function */
5bd4f169 665 "R_PPC64_PLT32", /* name */
b34976b6 666 FALSE, /* partial_inplace */
5bd4f169 667 0, /* src_mask */
f5e87a1d 668 0xffffffff, /* dst_mask */
b34976b6 669 FALSE), /* pcrel_offset */
5bd4f169
AM		 670
671 /* 32-bit PC relative relocation to the symbol's procedure linkage table.
672 FIXME: R_PPC64_PLTREL32 not supported. */
673 HOWTO (R_PPC64_PLTREL32, /* type */
674 0, /* rightshift */
675 2, /* size (0 = byte, 1 = short, 2 = long) */
676 32, /* bitsize */
b34976b6 677 TRUE, /* pc_relative */
5bd4f169
AM		 678 0, /* bitpos */
679 complain_overflow_signed, /* complain_on_overflow */
680 bfd_elf_generic_reloc, /* special_function */
681 "R_PPC64_PLTREL32", /* name */
b34976b6 682 FALSE, /* partial_inplace */
5bd4f169 683 0, /* src_mask */
f5e87a1d 684 0xffffffff, /* dst_mask */
b34976b6 685 TRUE), /* pcrel_offset */
5bd4f169
AM		 686
687 /* Like R_PPC64_ADDR16_LO, but referring to the PLT table entry for
688 the symbol. */
689 HOWTO (R_PPC64_PLT16_LO, /* type */
690 0, /* rightshift */
691 1, /* size (0 = byte, 1 = short, 2 = long) */
692 16, /* bitsize */
b34976b6 693 FALSE, /* pc_relative */
5bd4f169
AM		 694 0, /* bitpos */
695 complain_overflow_dont, /* complain_on_overflow */
805fc799 696 ppc64_elf_unhandled_reloc, /* special_function */
5bd4f169 697 "R_PPC64_PLT16_LO", /* name */
b34976b6 698 FALSE, /* partial_inplace */
5bd4f169
AM		 699 0, /* src_mask */
700 0xffff, /* dst_mask */
b34976b6 701 FALSE), /* pcrel_offset */
5bd4f169
AM		 702
703 /* Like R_PPC64_ADDR16_HI, but referring to the PLT table entry for
704 the symbol. */
705 HOWTO (R_PPC64_PLT16_HI, /* type */
706 16, /* rightshift */
707 1, /* size (0 = byte, 1 = short, 2 = long) */
708 16, /* bitsize */
b34976b6 709 FALSE, /* pc_relative */
5bd4f169 710 0, /* bitpos */
f9c6b907 711 complain_overflow_signed, /* complain_on_overflow */
805fc799 712 ppc64_elf_unhandled_reloc, /* special_function */
5bd4f169 713 "R_PPC64_PLT16_HI", /* name */
b34976b6 714 FALSE, /* partial_inplace */
5bd4f169
AM		 715 0, /* src_mask */
716 0xffff, /* dst_mask */
b34976b6 717 FALSE), /* pcrel_offset */
5bd4f169
AM		 718
719 /* Like R_PPC64_ADDR16_HA, but referring to the PLT table entry for
720 the symbol. */
721 HOWTO (R_PPC64_PLT16_HA, /* type */
722 16, /* rightshift */
723 1, /* size (0 = byte, 1 = short, 2 = long) */
724 16, /* bitsize */
b34976b6 725 FALSE, /* pc_relative */
5bd4f169 726 0, /* bitpos */
f9c6b907 727 complain_overflow_signed, /* complain_on_overflow */
805fc799 728 ppc64_elf_unhandled_reloc, /* special_function */
5bd4f169 729 "R_PPC64_PLT16_HA", /* name */
b34976b6 730 FALSE, /* partial_inplace */
5bd4f169
AM		 731 0, /* src_mask */
732 0xffff, /* dst_mask */
b34976b6 733 FALSE), /* pcrel_offset */
5bd4f169 734
c061c2d8 735 /* 16-bit section relative relocation. */
5bd4f169
AM		 736 HOWTO (R_PPC64_SECTOFF, /* type */
737 0, /* rightshift */
c061c2d8
AM		 738 1, /* size (0 = byte, 1 = short, 2 = long) */
739 16, /* bitsize */
b34976b6 740 FALSE, /* pc_relative */
5bd4f169 741 0, /* bitpos */
b80eed39 742 complain_overflow_signed, /* complain_on_overflow */
805fc799 743 ppc64_elf_sectoff_reloc, /* special_function */
5bd4f169 744 "R_PPC64_SECTOFF", /* name */
b34976b6 745 FALSE, /* partial_inplace */
5bd4f169 746 0, /* src_mask */
c061c2d8 747 0xffff, /* dst_mask */
b34976b6 748 FALSE), /* pcrel_offset */
5bd4f169 749
c061c2d8 750 /* Like R_PPC64_SECTOFF, but no overflow warning. */
5bd4f169
AM		 751 HOWTO (R_PPC64_SECTOFF_LO, /* type */
752 0, /* rightshift */
753 1, /* size (0 = byte, 1 = short, 2 = long) */
754 16, /* bitsize */
b34976b6 755 FALSE, /* pc_relative */
5bd4f169
AM		 756 0, /* bitpos */
757 complain_overflow_dont, /* complain_on_overflow */
805fc799 758 ppc64_elf_sectoff_reloc, /* special_function */
5bd4f169 759 "R_PPC64_SECTOFF_LO", /* name */
b34976b6 760 FALSE, /* partial_inplace */
5bd4f169
AM		 761 0, /* src_mask */
762 0xffff, /* dst_mask */
b34976b6 763 FALSE), /* pcrel_offset */
5bd4f169
AM		 764
765 /* 16-bit upper half section relative relocation. */
766 HOWTO (R_PPC64_SECTOFF_HI, /* type */
767 16, /* rightshift */
768 1, /* size (0 = byte, 1 = short, 2 = long) */
769 16, /* bitsize */
b34976b6 770 FALSE, /* pc_relative */
5bd4f169 771 0, /* bitpos */
f9c6b907 772 complain_overflow_signed, /* complain_on_overflow */
805fc799 773 ppc64_elf_sectoff_reloc, /* special_function */
5bd4f169 774 "R_PPC64_SECTOFF_HI", /* name */
b34976b6 775 FALSE, /* partial_inplace */
5bd4f169
AM		 776 0, /* src_mask */
777 0xffff, /* dst_mask */
b34976b6 778 FALSE), /* pcrel_offset */
5bd4f169
AM		 779
780 /* 16-bit upper half adjusted section relative relocation. */
781 HOWTO (R_PPC64_SECTOFF_HA, /* type */
782 16, /* rightshift */
783 1, /* size (0 = byte, 1 = short, 2 = long) */
784 16, /* bitsize */
b34976b6 785 FALSE, /* pc_relative */
5bd4f169 786 0, /* bitpos */
f9c6b907 787 complain_overflow_signed, /* complain_on_overflow */
805fc799 788 ppc64_elf_sectoff_ha_reloc, /* special_function */
5bd4f169 789 "R_PPC64_SECTOFF_HA", /* name */
b34976b6 790 FALSE, /* partial_inplace */
5bd4f169
AM		 791 0, /* src_mask */
792 0xffff, /* dst_mask */
b34976b6 793 FALSE), /* pcrel_offset */
5bd4f169 794
04c9666a
AM		 795 /* Like R_PPC64_REL24 without touching the two least significant bits. */
796 HOWTO (R_PPC64_REL30, /* type */
5bd4f169
AM		 797 2, /* rightshift */
798 2, /* size (0 = byte, 1 = short, 2 = long) */
799 30, /* bitsize */
b34976b6 800 TRUE, /* pc_relative */
5bd4f169
AM		 801 0, /* bitpos */
802 complain_overflow_dont, /* complain_on_overflow */
803 bfd_elf_generic_reloc, /* special_function */
04c9666a 804 "R_PPC64_REL30", /* name */
b34976b6 805 FALSE, /* partial_inplace */
d006db6c 806 0, /* src_mask */
5bd4f169 807 0xfffffffc, /* dst_mask */
b34976b6 808 TRUE), /* pcrel_offset */
5bd4f169
AM		 809
810 /* Relocs in the 64-bit PowerPC ELF ABI, not in the 32-bit ABI. */
811
812 /* A standard 64-bit relocation. */
813 HOWTO (R_PPC64_ADDR64, /* type */
814 0, /* rightshift */
815 4, /* size (0=byte, 1=short, 2=long, 4=64 bits) */
816 64, /* bitsize */
b34976b6 817 FALSE, /* pc_relative */
5bd4f169
AM		 818 0, /* bitpos */
819 complain_overflow_dont, /* complain_on_overflow */
820 bfd_elf_generic_reloc, /* special_function */
821 "R_PPC64_ADDR64", /* name */
b34976b6 822 FALSE, /* partial_inplace */
5bd4f169 823 0, /* src_mask */
f5e87a1d 824 ONES (64), /* dst_mask */
b34976b6 825 FALSE), /* pcrel_offset */
5bd4f169
AM		 826
827 /* The bits 32-47 of an address. */
828 HOWTO (R_PPC64_ADDR16_HIGHER, /* type */
829 32, /* rightshift */
830 1, /* size (0 = byte, 1 = short, 2 = long) */
831 16, /* bitsize */
b34976b6 832 FALSE, /* pc_relative */
5bd4f169
AM		 833 0, /* bitpos */
834 complain_overflow_dont, /* complain_on_overflow */
835 bfd_elf_generic_reloc, /* special_function */
836 "R_PPC64_ADDR16_HIGHER", /* name */
b34976b6 837 FALSE, /* partial_inplace */
5bd4f169
AM		 838 0, /* src_mask */
839 0xffff, /* dst_mask */
b34976b6 840 FALSE), /* pcrel_offset */
5bd4f169
AM		 841
842 /* The bits 32-47 of an address, plus 1 if the contents of the low
843 16 bits, treated as a signed number, is negative. */
844 HOWTO (R_PPC64_ADDR16_HIGHERA, /* type */
845 32, /* rightshift */
846 1, /* size (0 = byte, 1 = short, 2 = long) */
847 16, /* bitsize */
b34976b6 848 FALSE, /* pc_relative */
5bd4f169
AM		 849 0, /* bitpos */
850 complain_overflow_dont, /* complain_on_overflow */
805fc799 851 ppc64_elf_ha_reloc, /* special_function */
5bd4f169 852 "R_PPC64_ADDR16_HIGHERA", /* name */
b34976b6 853 FALSE, /* partial_inplace */
5bd4f169
AM		 854 0, /* src_mask */
855 0xffff, /* dst_mask */
b34976b6 856 FALSE), /* pcrel_offset */
5bd4f169
AM		 857
858 /* The bits 48-63 of an address. */
859 HOWTO (R_PPC64_ADDR16_HIGHEST,/* type */
860 48, /* rightshift */
861 1, /* size (0 = byte, 1 = short, 2 = long) */
862 16, /* bitsize */
b34976b6 863 FALSE, /* pc_relative */
5bd4f169
AM		 864 0, /* bitpos */
865 complain_overflow_dont, /* complain_on_overflow */
866 bfd_elf_generic_reloc, /* special_function */
867 "R_PPC64_ADDR16_HIGHEST", /* name */
b34976b6 868 FALSE, /* partial_inplace */
5bd4f169
AM		 869 0, /* src_mask */
870 0xffff, /* dst_mask */
b34976b6 871 FALSE), /* pcrel_offset */
5bd4f169
AM		 872
873 /* The bits 48-63 of an address, plus 1 if the contents of the low
874 16 bits, treated as a signed number, is negative. */
875 HOWTO (R_PPC64_ADDR16_HIGHESTA,/* type */
876 48, /* rightshift */
877 1, /* size (0 = byte, 1 = short, 2 = long) */
878 16, /* bitsize */
b34976b6 879 FALSE, /* pc_relative */
5bd4f169
AM		 880 0, /* bitpos */
881 complain_overflow_dont, /* complain_on_overflow */
805fc799 882 ppc64_elf_ha_reloc, /* special_function */
5bd4f169 883 "R_PPC64_ADDR16_HIGHESTA", /* name */
b34976b6 884 FALSE, /* partial_inplace */
5bd4f169
AM		 885 0, /* src_mask */
886 0xffff, /* dst_mask */
b34976b6 887 FALSE), /* pcrel_offset */
5bd4f169
AM		 888
889 /* Like ADDR64, but may be unaligned. */
890 HOWTO (R_PPC64_UADDR64, /* type */
891 0, /* rightshift */
892 4, /* size (0=byte, 1=short, 2=long, 4=64 bits) */
893 64, /* bitsize */
b34976b6 894 FALSE, /* pc_relative */
5bd4f169
AM		 895 0, /* bitpos */
896 complain_overflow_dont, /* complain_on_overflow */
897 bfd_elf_generic_reloc, /* special_function */
898 "R_PPC64_UADDR64", /* name */
b34976b6 899 FALSE, /* partial_inplace */
5bd4f169 900 0, /* src_mask */
f5e87a1d 901 ONES (64), /* dst_mask */
b34976b6 902 FALSE), /* pcrel_offset */
5bd4f169
AM		 903
904 /* 64-bit relative relocation. */
905 HOWTO (R_PPC64_REL64, /* type */
906 0, /* rightshift */
907 4, /* size (0=byte, 1=short, 2=long, 4=64 bits) */
908 64, /* bitsize */
b34976b6 909 TRUE, /* pc_relative */
5bd4f169
AM		 910 0, /* bitpos */
911 complain_overflow_dont, /* complain_on_overflow */
912 bfd_elf_generic_reloc, /* special_function */
913 "R_PPC64_REL64", /* name */
b34976b6 914 FALSE, /* partial_inplace */
5bd4f169 915 0, /* src_mask */
f5e87a1d 916 ONES (64), /* dst_mask */
b34976b6 917 TRUE), /* pcrel_offset */
5bd4f169 918
cedb70c5 919 /* 64-bit relocation to the symbol's procedure linkage table. */
5bd4f169
AM		 920 HOWTO (R_PPC64_PLT64, /* type */
921 0, /* rightshift */
922 4, /* size (0=byte, 1=short, 2=long, 4=64 bits) */
923 64, /* bitsize */
b34976b6 924 FALSE, /* pc_relative */
5bd4f169
AM		 925 0, /* bitpos */
926 complain_overflow_dont, /* complain_on_overflow */
805fc799 927 ppc64_elf_unhandled_reloc, /* special_function */
5bd4f169 928 "R_PPC64_PLT64", /* name */
b34976b6 929 FALSE, /* partial_inplace */
5bd4f169 930 0, /* src_mask */
f5e87a1d 931 ONES (64), /* dst_mask */
b34976b6 932 FALSE), /* pcrel_offset */
5bd4f169
AM		 933
934 /* 64-bit PC relative relocation to the symbol's procedure linkage
935 table. */
936 /* FIXME: R_PPC64_PLTREL64 not supported. */
937 HOWTO (R_PPC64_PLTREL64, /* type */
938 0, /* rightshift */
939 4, /* size (0=byte, 1=short, 2=long, 4=64 bits) */
940 64, /* bitsize */
b34976b6 941 TRUE, /* pc_relative */
5bd4f169
AM		 942 0, /* bitpos */
943 complain_overflow_dont, /* complain_on_overflow */
805fc799 944 ppc64_elf_unhandled_reloc, /* special_function */
5bd4f169 945 "R_PPC64_PLTREL64", /* name */
b34976b6 946 FALSE, /* partial_inplace */
5bd4f169 947 0, /* src_mask */
f5e87a1d 948 ONES (64), /* dst_mask */
b34976b6 949 TRUE), /* pcrel_offset */
5bd4f169
AM		 950
951 /* 16 bit TOC-relative relocation. */
952
953 /* R_PPC64_TOC16 47 half16* S + A - .TOC. */
954 HOWTO (R_PPC64_TOC16, /* type */
955 0, /* rightshift */
956 1, /* size (0 = byte, 1 = short, 2 = long) */
957 16, /* bitsize */
b34976b6 958 FALSE, /* pc_relative */
5bd4f169
AM		 959 0, /* bitpos */
960 complain_overflow_signed, /* complain_on_overflow */
805fc799 961 ppc64_elf_toc_reloc, /* special_function */
5bd4f169 962 "R_PPC64_TOC16", /* name */
b34976b6 963 FALSE, /* partial_inplace */
5bd4f169
AM		 964 0, /* src_mask */
965 0xffff, /* dst_mask */
b34976b6 966 FALSE), /* pcrel_offset */
5bd4f169
AM		 967
968 /* 16 bit TOC-relative relocation without overflow. */
969
970 /* R_PPC64_TOC16_LO 48 half16 #lo (S + A - .TOC.) */
971 HOWTO (R_PPC64_TOC16_LO, /* type */
972 0, /* rightshift */
973 1, /* size (0 = byte, 1 = short, 2 = long) */
974 16, /* bitsize */
b34976b6 975 FALSE, /* pc_relative */
5bd4f169
AM		 976 0, /* bitpos */
977 complain_overflow_dont, /* complain_on_overflow */
805fc799 978 ppc64_elf_toc_reloc, /* special_function */
5bd4f169 979 "R_PPC64_TOC16_LO", /* name */
b34976b6 980 FALSE, /* partial_inplace */
5bd4f169
AM		 981 0, /* src_mask */
982 0xffff, /* dst_mask */
b34976b6 983 FALSE), /* pcrel_offset */
5bd4f169
AM		 984
985 /* 16 bit TOC-relative relocation, high 16 bits. */
986
987 /* R_PPC64_TOC16_HI 49 half16 #hi (S + A - .TOC.) */
988 HOWTO (R_PPC64_TOC16_HI, /* type */
989 16, /* rightshift */
990 1, /* size (0 = byte, 1 = short, 2 = long) */
991 16, /* bitsize */
b34976b6 992 FALSE, /* pc_relative */
5bd4f169 993 0, /* bitpos */
f9c6b907 994 complain_overflow_signed, /* complain_on_overflow */
805fc799 995 ppc64_elf_toc_reloc, /* special_function */
5bd4f169 996 "R_PPC64_TOC16_HI", /* name */
b34976b6 997 FALSE, /* partial_inplace */
5bd4f169
AM		 998 0, /* src_mask */
999 0xffff, /* dst_mask */
b34976b6 1000 FALSE), /* pcrel_offset */
5bd4f169
AM		 1001
1002 /* 16 bit TOC-relative relocation, high 16 bits, plus 1 if the
1003 contents of the low 16 bits, treated as a signed number, is
1004 negative. */
1005
1006 /* R_PPC64_TOC16_HA 50 half16 #ha (S + A - .TOC.) */
1007 HOWTO (R_PPC64_TOC16_HA, /* type */
1008 16, /* rightshift */
1009 1, /* size (0 = byte, 1 = short, 2 = long) */
1010 16, /* bitsize */
b34976b6 1011 FALSE, /* pc_relative */
5bd4f169 1012 0, /* bitpos */
f9c6b907 1013 complain_overflow_signed, /* complain_on_overflow */
805fc799 1014 ppc64_elf_toc_ha_reloc, /* special_function */
5bd4f169 1015 "R_PPC64_TOC16_HA", /* name */
b34976b6 1016 FALSE, /* partial_inplace */
5bd4f169
AM		 1017 0, /* src_mask */
1018 0xffff, /* dst_mask */
b34976b6 1019 FALSE), /* pcrel_offset */
5bd4f169
AM		 1020
1021 /* 64-bit relocation; insert value of TOC base (.TOC.). */
1022
1023 /* R_PPC64_TOC 51 doubleword64 .TOC. */
1024 HOWTO (R_PPC64_TOC, /* type */
1025 0, /* rightshift */
1026 4, /* size (0=byte, 1=short, 2=long, 4=64 bits) */
1027 64, /* bitsize */
b34976b6 1028 FALSE, /* pc_relative */
5bd4f169 1029 0, /* bitpos */
b80eed39 1030 complain_overflow_dont, /* complain_on_overflow */
805fc799 1031 ppc64_elf_toc64_reloc, /* special_function */
5bd4f169 1032 "R_PPC64_TOC", /* name */
b34976b6 1033 FALSE, /* partial_inplace */
5bd4f169 1034 0, /* src_mask */
f5e87a1d 1035 ONES (64), /* dst_mask */
b34976b6 1036 FALSE), /* pcrel_offset */
5bd4f169
AM		 1037
1038 /* Like R_PPC64_GOT16, but also informs the link editor that the
1039 value to relocate may (!) refer to a PLT entry which the link
1040 editor (a) may replace with the symbol value. If the link editor
1041 is unable to fully resolve the symbol, it may (b) create a PLT
1042 entry and store the address to the new PLT entry in the GOT.
1043 This permits lazy resolution of function symbols at run time.
1044 The link editor may also skip all of this and just (c) emit a
1045 R_PPC64_GLOB_DAT to tie the symbol to the GOT entry. */
1046 /* FIXME: R_PPC64_PLTGOT16 not implemented. */
1047 HOWTO (R_PPC64_PLTGOT16, /* type */
1048 0, /* rightshift */
1049 1, /* size (0 = byte, 1 = short, 2 = long) */
1050 16, /* bitsize */
b34976b6 1051 FALSE, /* pc_relative */
5bd4f169
AM		 1052 0, /* bitpos */
1053 complain_overflow_signed, /* complain_on_overflow */
805fc799 1054 ppc64_elf_unhandled_reloc, /* special_function */
411e1bfb
AM		 1055 "R_PPC64_PLTGOT16", /* name */
1056 FALSE, /* partial_inplace */
1057 0, /* src_mask */
1058 0xffff, /* dst_mask */
1059 FALSE), /* pcrel_offset */
1060
1061 /* Like R_PPC64_PLTGOT16, but without overflow. */
1062 /* FIXME: R_PPC64_PLTGOT16_LO not implemented. */
1063 HOWTO (R_PPC64_PLTGOT16_LO, /* type */
1064 0, /* rightshift */
1065 1, /* size (0 = byte, 1 = short, 2 = long) */
1066 16, /* bitsize */
1067 FALSE, /* pc_relative */
1068 0, /* bitpos */
1069 complain_overflow_dont, /* complain_on_overflow */
1070 ppc64_elf_unhandled_reloc, /* special_function */
1071 "R_PPC64_PLTGOT16_LO", /* name */
1072 FALSE, /* partial_inplace */
1073 0, /* src_mask */
1074 0xffff, /* dst_mask */
1075 FALSE), /* pcrel_offset */
1076
1077 /* Like R_PPC64_PLT_GOT16, but using bits 16-31 of the address. */
1078 /* FIXME: R_PPC64_PLTGOT16_HI not implemented. */
1079 HOWTO (R_PPC64_PLTGOT16_HI, /* type */
1080 16, /* rightshift */
1081 1, /* size (0 = byte, 1 = short, 2 = long) */
1082 16, /* bitsize */
1083 FALSE, /* pc_relative */
1084 0, /* bitpos */
f9c6b907 1085 complain_overflow_signed, /* complain_on_overflow */
411e1bfb
AM		 1086 ppc64_elf_unhandled_reloc, /* special_function */
1087 "R_PPC64_PLTGOT16_HI", /* name */
1088 FALSE, /* partial_inplace */
1089 0, /* src_mask */
1090 0xffff, /* dst_mask */
1091 FALSE), /* pcrel_offset */
1092
1093 /* Like R_PPC64_PLT_GOT16, but using bits 16-31 of the address, plus
1094 1 if the contents of the low 16 bits, treated as a signed number,
1095 is negative. */
1096 /* FIXME: R_PPC64_PLTGOT16_HA not implemented. */
1097 HOWTO (R_PPC64_PLTGOT16_HA, /* type */
1098 16, /* rightshift */
1099 1, /* size (0 = byte, 1 = short, 2 = long) */
1100 16, /* bitsize */
1101 FALSE, /* pc_relative */
1102 0, /* bitpos */
f9c6b907 1103 complain_overflow_signed, /* complain_on_overflow */
411e1bfb
AM		 1104 ppc64_elf_unhandled_reloc, /* special_function */
1105 "R_PPC64_PLTGOT16_HA", /* name */
1106 FALSE, /* partial_inplace */
1107 0, /* src_mask */
1108 0xffff, /* dst_mask */
1109 FALSE), /* pcrel_offset */
1110
1111 /* Like R_PPC64_ADDR16, but for instructions with a DS field. */
1112 HOWTO (R_PPC64_ADDR16_DS, /* type */
1113 0, /* rightshift */
1114 1, /* size (0 = byte, 1 = short, 2 = long) */
1115 16, /* bitsize */
1116 FALSE, /* pc_relative */
1117 0, /* bitpos */
b80eed39 1118 complain_overflow_signed, /* complain_on_overflow */
411e1bfb
AM		 1119 bfd_elf_generic_reloc, /* special_function */
1120 "R_PPC64_ADDR16_DS", /* name */
1121 FALSE, /* partial_inplace */
1122 0, /* src_mask */
1123 0xfffc, /* dst_mask */
1124 FALSE), /* pcrel_offset */
1125
1126 /* Like R_PPC64_ADDR16_LO, but for instructions with a DS field. */
1127 HOWTO (R_PPC64_ADDR16_LO_DS, /* type */
1128 0, /* rightshift */
1129 1, /* size (0 = byte, 1 = short, 2 = long) */
1130 16, /* bitsize */
1131 FALSE, /* pc_relative */
1132 0, /* bitpos */
1133 complain_overflow_dont,/* complain_on_overflow */
1134 bfd_elf_generic_reloc, /* special_function */
1135 "R_PPC64_ADDR16_LO_DS",/* name */
1136 FALSE, /* partial_inplace */
1137 0, /* src_mask */
1138 0xfffc, /* dst_mask */
1139 FALSE), /* pcrel_offset */
1140
1141 /* Like R_PPC64_GOT16, but for instructions with a DS field. */
1142 HOWTO (R_PPC64_GOT16_DS, /* type */
1143 0, /* rightshift */
1144 1, /* size (0 = byte, 1 = short, 2 = long) */
1145 16, /* bitsize */
1146 FALSE, /* pc_relative */
1147 0, /* bitpos */
1148 complain_overflow_signed, /* complain_on_overflow */
1149 ppc64_elf_unhandled_reloc, /* special_function */
1150 "R_PPC64_GOT16_DS", /* name */
1151 FALSE, /* partial_inplace */
1152 0, /* src_mask */
1153 0xfffc, /* dst_mask */
1154 FALSE), /* pcrel_offset */
1155
1156 /* Like R_PPC64_GOT16_LO, but for instructions with a DS field. */
1157 HOWTO (R_PPC64_GOT16_LO_DS, /* type */
1158 0, /* rightshift */
1159 1, /* size (0 = byte, 1 = short, 2 = long) */
1160 16, /* bitsize */
1161 FALSE, /* pc_relative */
1162 0, /* bitpos */
1163 complain_overflow_dont, /* complain_on_overflow */
1164 ppc64_elf_unhandled_reloc, /* special_function */
1165 "R_PPC64_GOT16_LO_DS", /* name */
1166 FALSE, /* partial_inplace */
1167 0, /* src_mask */
1168 0xfffc, /* dst_mask */
1169 FALSE), /* pcrel_offset */
1170
1171 /* Like R_PPC64_PLT16_LO, but for instructions with a DS field. */
1172 HOWTO (R_PPC64_PLT16_LO_DS, /* type */
1173 0, /* rightshift */
1174 1, /* size (0 = byte, 1 = short, 2 = long) */
1175 16, /* bitsize */
1176 FALSE, /* pc_relative */
1177 0, /* bitpos */
1178 complain_overflow_dont, /* complain_on_overflow */
1179 ppc64_elf_unhandled_reloc, /* special_function */
1180 "R_PPC64_PLT16_LO_DS", /* name */
1181 FALSE, /* partial_inplace */
1182 0, /* src_mask */
1183 0xfffc, /* dst_mask */
1184 FALSE), /* pcrel_offset */
1185
1186 /* Like R_PPC64_SECTOFF, but for instructions with a DS field. */
1187 HOWTO (R_PPC64_SECTOFF_DS, /* type */
1188 0, /* rightshift */
1189 1, /* size (0 = byte, 1 = short, 2 = long) */
1190 16, /* bitsize */
1191 FALSE, /* pc_relative */
1192 0, /* bitpos */
b80eed39 1193 complain_overflow_signed, /* complain_on_overflow */
411e1bfb
AM		 1194 ppc64_elf_sectoff_reloc, /* special_function */
1195 "R_PPC64_SECTOFF_DS", /* name */
1196 FALSE, /* partial_inplace */
1197 0, /* src_mask */
1198 0xfffc, /* dst_mask */
1199 FALSE), /* pcrel_offset */
1200
1201 /* Like R_PPC64_SECTOFF_LO, but for instructions with a DS field. */
1202 HOWTO (R_PPC64_SECTOFF_LO_DS, /* type */
1203 0, /* rightshift */
1204 1, /* size (0 = byte, 1 = short, 2 = long) */
1205 16, /* bitsize */
1206 FALSE, /* pc_relative */
1207 0, /* bitpos */
1208 complain_overflow_dont, /* complain_on_overflow */
1209 ppc64_elf_sectoff_reloc, /* special_function */
1210 "R_PPC64_SECTOFF_LO_DS",/* name */
1211 FALSE, /* partial_inplace */
1212 0, /* src_mask */
1213 0xfffc, /* dst_mask */
1214 FALSE), /* pcrel_offset */
1215
1216 /* Like R_PPC64_TOC16, but for instructions with a DS field. */
1217 HOWTO (R_PPC64_TOC16_DS, /* type */
1218 0, /* rightshift */
1219 1, /* size (0 = byte, 1 = short, 2 = long) */
1220 16, /* bitsize */
1221 FALSE, /* pc_relative */
1222 0, /* bitpos */
1223 complain_overflow_signed, /* complain_on_overflow */
1224 ppc64_elf_toc_reloc, /* special_function */
1225 "R_PPC64_TOC16_DS", /* name */
1226 FALSE, /* partial_inplace */
1227 0, /* src_mask */
1228 0xfffc, /* dst_mask */
1229 FALSE), /* pcrel_offset */
1230
1231 /* Like R_PPC64_TOC16_LO, but for instructions with a DS field. */
1232 HOWTO (R_PPC64_TOC16_LO_DS, /* type */
1233 0, /* rightshift */
1234 1, /* size (0 = byte, 1 = short, 2 = long) */
1235 16, /* bitsize */
1236 FALSE, /* pc_relative */
1237 0, /* bitpos */
1238 complain_overflow_dont, /* complain_on_overflow */
1239 ppc64_elf_toc_reloc, /* special_function */
1240 "R_PPC64_TOC16_LO_DS", /* name */
1241 FALSE, /* partial_inplace */
1242 0, /* src_mask */
1243 0xfffc, /* dst_mask */
1244 FALSE), /* pcrel_offset */
1245
1246 /* Like R_PPC64_PLTGOT16, but for instructions with a DS field. */
1247 /* FIXME: R_PPC64_PLTGOT16_DS not implemented. */
6bfdb61b 1248 HOWTO (R_PPC64_PLTGOT16_DS, /* type */
411e1bfb
AM		 1249 0, /* rightshift */
1250 1, /* size (0 = byte, 1 = short, 2 = long) */
1251 16, /* bitsize */
1252 FALSE, /* pc_relative */
1253 0, /* bitpos */
1254 complain_overflow_signed, /* complain_on_overflow */
1255 ppc64_elf_unhandled_reloc, /* special_function */
1256 "R_PPC64_PLTGOT16_DS", /* name */
1257 FALSE, /* partial_inplace */
1258 0, /* src_mask */
1259 0xfffc, /* dst_mask */
1260 FALSE), /* pcrel_offset */
1261
1262 /* Like R_PPC64_PLTGOT16_LO, but for instructions with a DS field. */
1263 /* FIXME: R_PPC64_PLTGOT16_LO not implemented. */
1264 HOWTO (R_PPC64_PLTGOT16_LO_DS,/* type */
1265 0, /* rightshift */
1266 1, /* size (0 = byte, 1 = short, 2 = long) */
1267 16, /* bitsize */
1268 FALSE, /* pc_relative */
1269 0, /* bitpos */
1270 complain_overflow_dont, /* complain_on_overflow */
1271 ppc64_elf_unhandled_reloc, /* special_function */
1272 "R_PPC64_PLTGOT16_LO_DS",/* name */
1273 FALSE, /* partial_inplace */
1274 0, /* src_mask */
1275 0xfffc, /* dst_mask */
1276 FALSE), /* pcrel_offset */
1277
727fc41e 1278 /* Marker relocs for TLS. */
411e1bfb
AM		 1279 HOWTO (R_PPC64_TLS,
1280 0, /* rightshift */
1281 2, /* size (0 = byte, 1 = short, 2 = long) */
1282 32, /* bitsize */
1283 FALSE, /* pc_relative */
1284 0, /* bitpos */
1285 complain_overflow_dont, /* complain_on_overflow */
1286 bfd_elf_generic_reloc, /* special_function */
1287 "R_PPC64_TLS", /* name */
1288 FALSE, /* partial_inplace */
1289 0, /* src_mask */
1290 0, /* dst_mask */
1291 FALSE), /* pcrel_offset */
1292
727fc41e
AM		 1293 HOWTO (R_PPC64_TLSGD,
1294 0, /* rightshift */
1295 2, /* size (0 = byte, 1 = short, 2 = long) */
1296 32, /* bitsize */
1297 FALSE, /* pc_relative */
1298 0, /* bitpos */
1299 complain_overflow_dont, /* complain_on_overflow */
1300 bfd_elf_generic_reloc, /* special_function */
1301 "R_PPC64_TLSGD", /* name */
1302 FALSE, /* partial_inplace */
1303 0, /* src_mask */
1304 0, /* dst_mask */
1305 FALSE), /* pcrel_offset */
1306
1307 HOWTO (R_PPC64_TLSLD,
1308 0, /* rightshift */
1309 2, /* size (0 = byte, 1 = short, 2 = long) */
1310 32, /* bitsize */
1311 FALSE, /* pc_relative */
1312 0, /* bitpos */
1313 complain_overflow_dont, /* complain_on_overflow */
1314 bfd_elf_generic_reloc, /* special_function */
1315 "R_PPC64_TLSLD", /* name */
1316 FALSE, /* partial_inplace */
1317 0, /* src_mask */
1318 0, /* dst_mask */
1319 FALSE), /* pcrel_offset */
1320
3b421ab3
AM		 1321 HOWTO (R_PPC64_TOCSAVE,
1322 0, /* rightshift */
1323 2, /* size (0 = byte, 1 = short, 2 = long) */
1324 32, /* bitsize */
1325 FALSE, /* pc_relative */
1326 0, /* bitpos */
1327 complain_overflow_dont, /* complain_on_overflow */
1328 bfd_elf_generic_reloc, /* special_function */
1329 "R_PPC64_TOCSAVE", /* name */
1330 FALSE, /* partial_inplace */
1331 0, /* src_mask */
1332 0, /* dst_mask */
1333 FALSE), /* pcrel_offset */
1334
411e1bfb
AM		 1335 /* Computes the load module index of the load module that contains the
1336 definition of its TLS sym. */
1337 HOWTO (R_PPC64_DTPMOD64,
1338 0, /* rightshift */
1339 4, /* size (0 = byte, 1 = short, 2 = long) */
1340 64, /* bitsize */
1341 FALSE, /* pc_relative */
1342 0, /* bitpos */
1343 complain_overflow_dont, /* complain_on_overflow */
1344 ppc64_elf_unhandled_reloc, /* special_function */
1345 "R_PPC64_DTPMOD64", /* name */
1346 FALSE, /* partial_inplace */
1347 0, /* src_mask */
1348 ONES (64), /* dst_mask */
1349 FALSE), /* pcrel_offset */
1350
1351 /* Computes a dtv-relative displacement, the difference between the value
1352 of sym+add and the base address of the thread-local storage block that
1353 contains the definition of sym, minus 0x8000. */
1354 HOWTO (R_PPC64_DTPREL64,
1355 0, /* rightshift */
1356 4, /* size (0 = byte, 1 = short, 2 = long) */
1357 64, /* bitsize */
1358 FALSE, /* pc_relative */
1359 0, /* bitpos */
1360 complain_overflow_dont, /* complain_on_overflow */
1361 ppc64_elf_unhandled_reloc, /* special_function */
1362 "R_PPC64_DTPREL64", /* name */
1363 FALSE, /* partial_inplace */
1364 0, /* src_mask */
1365 ONES (64), /* dst_mask */
1366 FALSE), /* pcrel_offset */
1367
1368 /* A 16 bit dtprel reloc. */
1369 HOWTO (R_PPC64_DTPREL16,
1370 0, /* rightshift */
1371 1, /* size (0 = byte, 1 = short, 2 = long) */
1372 16, /* bitsize */
1373 FALSE, /* pc_relative */
1374 0, /* bitpos */
1375 complain_overflow_signed, /* complain_on_overflow */
1376 ppc64_elf_unhandled_reloc, /* special_function */
1377 "R_PPC64_DTPREL16", /* name */
1378 FALSE, /* partial_inplace */
1379 0, /* src_mask */
1380 0xffff, /* dst_mask */
1381 FALSE), /* pcrel_offset */
1382
1383 /* Like DTPREL16, but no overflow. */
1384 HOWTO (R_PPC64_DTPREL16_LO,
1385 0, /* rightshift */
1386 1, /* size (0 = byte, 1 = short, 2 = long) */
1387 16, /* bitsize */
1388 FALSE, /* pc_relative */
1389 0, /* bitpos */
1390 complain_overflow_dont, /* complain_on_overflow */
1391 ppc64_elf_unhandled_reloc, /* special_function */
1392 "R_PPC64_DTPREL16_LO", /* name */
1393 FALSE, /* partial_inplace */
1394 0, /* src_mask */
1395 0xffff, /* dst_mask */
1396 FALSE), /* pcrel_offset */
1397
1398 /* Like DTPREL16_LO, but next higher group of 16 bits. */
1399 HOWTO (R_PPC64_DTPREL16_HI,
1400 16, /* rightshift */
1401 1, /* size (0 = byte, 1 = short, 2 = long) */
1402 16, /* bitsize */
1403 FALSE, /* pc_relative */
1404 0, /* bitpos */
f9c6b907 1405 complain_overflow_signed, /* complain_on_overflow */
411e1bfb
AM		 1406 ppc64_elf_unhandled_reloc, /* special_function */
1407 "R_PPC64_DTPREL16_HI", /* name */
1408 FALSE, /* partial_inplace */
1409 0, /* src_mask */
1410 0xffff, /* dst_mask */
1411 FALSE), /* pcrel_offset */
1412
1413 /* Like DTPREL16_HI, but adjust for low 16 bits. */
1414 HOWTO (R_PPC64_DTPREL16_HA,
1415 16, /* rightshift */
1416 1, /* size (0 = byte, 1 = short, 2 = long) */
1417 16, /* bitsize */
1418 FALSE, /* pc_relative */
1419 0, /* bitpos */
f9c6b907 1420 complain_overflow_signed, /* complain_on_overflow */
411e1bfb
AM		 1421 ppc64_elf_unhandled_reloc, /* special_function */
1422 "R_PPC64_DTPREL16_HA", /* name */
1423 FALSE, /* partial_inplace */
1424 0, /* src_mask */
1425 0xffff, /* dst_mask */
1426 FALSE), /* pcrel_offset */
1427
1428 /* Like DTPREL16_HI, but next higher group of 16 bits. */
1429 HOWTO (R_PPC64_DTPREL16_HIGHER,
1430 32, /* rightshift */
1431 1, /* size (0 = byte, 1 = short, 2 = long) */
1432 16, /* bitsize */
1433 FALSE, /* pc_relative */
1434 0, /* bitpos */
1435 complain_overflow_dont, /* complain_on_overflow */
1436 ppc64_elf_unhandled_reloc, /* special_function */
1437 "R_PPC64_DTPREL16_HIGHER", /* name */
1438 FALSE, /* partial_inplace */
1439 0, /* src_mask */
1440 0xffff, /* dst_mask */
1441 FALSE), /* pcrel_offset */
1442
1443 /* Like DTPREL16_HIGHER, but adjust for low 16 bits. */
1444 HOWTO (R_PPC64_DTPREL16_HIGHERA,
1445 32, /* rightshift */
1446 1, /* size (0 = byte, 1 = short, 2 = long) */
1447 16, /* bitsize */
1448 FALSE, /* pc_relative */
1449 0, /* bitpos */
1450 complain_overflow_dont, /* complain_on_overflow */
1451 ppc64_elf_unhandled_reloc, /* special_function */
1452 "R_PPC64_DTPREL16_HIGHERA", /* name */
1453 FALSE, /* partial_inplace */
1454 0, /* src_mask */
1455 0xffff, /* dst_mask */
1456 FALSE), /* pcrel_offset */
1457
1458 /* Like DTPREL16_HIGHER, but next higher group of 16 bits. */
1459 HOWTO (R_PPC64_DTPREL16_HIGHEST,
1460 48, /* rightshift */
1461 1, /* size (0 = byte, 1 = short, 2 = long) */
1462 16, /* bitsize */
1463 FALSE, /* pc_relative */
1464 0, /* bitpos */
1465 complain_overflow_dont, /* complain_on_overflow */
1466 ppc64_elf_unhandled_reloc, /* special_function */
1467 "R_PPC64_DTPREL16_HIGHEST", /* name */
1468 FALSE, /* partial_inplace */
1469 0, /* src_mask */
1470 0xffff, /* dst_mask */
1471 FALSE), /* pcrel_offset */
1472
1473 /* Like DTPREL16_HIGHEST, but adjust for low 16 bits. */
1474 HOWTO (R_PPC64_DTPREL16_HIGHESTA,
1475 48, /* rightshift */
1476 1, /* size (0 = byte, 1 = short, 2 = long) */
1477 16, /* bitsize */
1478 FALSE, /* pc_relative */
1479 0, /* bitpos */
1480 complain_overflow_dont, /* complain_on_overflow */
1481 ppc64_elf_unhandled_reloc, /* special_function */
1482 "R_PPC64_DTPREL16_HIGHESTA", /* name */
1483 FALSE, /* partial_inplace */
1484 0, /* src_mask */
1485 0xffff, /* dst_mask */
1486 FALSE), /* pcrel_offset */
1487
1488 /* Like DTPREL16, but for insns with a DS field. */
1489 HOWTO (R_PPC64_DTPREL16_DS,
1490 0, /* rightshift */
1491 1, /* size (0 = byte, 1 = short, 2 = long) */
1492 16, /* bitsize */
1493 FALSE, /* pc_relative */
1494 0, /* bitpos */
1495 complain_overflow_signed, /* complain_on_overflow */
1496 ppc64_elf_unhandled_reloc, /* special_function */
1497 "R_PPC64_DTPREL16_DS", /* name */
1498 FALSE, /* partial_inplace */
1499 0, /* src_mask */
1500 0xfffc, /* dst_mask */
1501 FALSE), /* pcrel_offset */
1502
1503 /* Like DTPREL16_DS, but no overflow. */
1504 HOWTO (R_PPC64_DTPREL16_LO_DS,
1505 0, /* rightshift */
1506 1, /* size (0 = byte, 1 = short, 2 = long) */
1507 16, /* bitsize */
1508 FALSE, /* pc_relative */
1509 0, /* bitpos */
1510 complain_overflow_dont, /* complain_on_overflow */
1511 ppc64_elf_unhandled_reloc, /* special_function */
1512 "R_PPC64_DTPREL16_LO_DS", /* name */
1513 FALSE, /* partial_inplace */
1514 0, /* src_mask */
1515 0xfffc, /* dst_mask */
1516 FALSE), /* pcrel_offset */
1517
1518 /* Computes a tp-relative displacement, the difference between the value of
1519 sym+add and the value of the thread pointer (r13). */
1520 HOWTO (R_PPC64_TPREL64,
1521 0, /* rightshift */
1522 4, /* size (0 = byte, 1 = short, 2 = long) */
1523 64, /* bitsize */
1524 FALSE, /* pc_relative */
1525 0, /* bitpos */
1526 complain_overflow_dont, /* complain_on_overflow */
1527 ppc64_elf_unhandled_reloc, /* special_function */
1528 "R_PPC64_TPREL64", /* name */
1529 FALSE, /* partial_inplace */
1530 0, /* src_mask */
1531 ONES (64), /* dst_mask */
1532 FALSE), /* pcrel_offset */
1533
1534 /* A 16 bit tprel reloc. */
1535 HOWTO (R_PPC64_TPREL16,
1536 0, /* rightshift */
1537 1, /* size (0 = byte, 1 = short, 2 = long) */
1538 16, /* bitsize */
1539 FALSE, /* pc_relative */
1540 0, /* bitpos */
1541 complain_overflow_signed, /* complain_on_overflow */
1542 ppc64_elf_unhandled_reloc, /* special_function */
1543 "R_PPC64_TPREL16", /* name */
1544 FALSE, /* partial_inplace */
1545 0, /* src_mask */
1546 0xffff, /* dst_mask */
1547 FALSE), /* pcrel_offset */
1548
1549 /* Like TPREL16, but no overflow. */
1550 HOWTO (R_PPC64_TPREL16_LO,
1551 0, /* rightshift */
1552 1, /* size (0 = byte, 1 = short, 2 = long) */
1553 16, /* bitsize */
1554 FALSE, /* pc_relative */
1555 0, /* bitpos */
1556 complain_overflow_dont, /* complain_on_overflow */
1557 ppc64_elf_unhandled_reloc, /* special_function */
1558 "R_PPC64_TPREL16_LO", /* name */
1559 FALSE, /* partial_inplace */
1560 0, /* src_mask */
1561 0xffff, /* dst_mask */
1562 FALSE), /* pcrel_offset */
1563
1564 /* Like TPREL16_LO, but next higher group of 16 bits. */
1565 HOWTO (R_PPC64_TPREL16_HI,
1566 16, /* rightshift */
1567 1, /* size (0 = byte, 1 = short, 2 = long) */
1568 16, /* bitsize */
1569 FALSE, /* pc_relative */
1570 0, /* bitpos */
f9c6b907 1571 complain_overflow_signed, /* complain_on_overflow */
411e1bfb
AM		 1572 ppc64_elf_unhandled_reloc, /* special_function */
1573 "R_PPC64_TPREL16_HI", /* name */
1574 FALSE, /* partial_inplace */
1575 0, /* src_mask */
1576 0xffff, /* dst_mask */
1577 FALSE), /* pcrel_offset */
1578
1579 /* Like TPREL16_HI, but adjust for low 16 bits. */
1580 HOWTO (R_PPC64_TPREL16_HA,
1581 16, /* rightshift */
1582 1, /* size (0 = byte, 1 = short, 2 = long) */
1583 16, /* bitsize */
1584 FALSE, /* pc_relative */
1585 0, /* bitpos */
f9c6b907 1586 complain_overflow_signed, /* complain_on_overflow */
411e1bfb
AM		 1587 ppc64_elf_unhandled_reloc, /* special_function */
1588 "R_PPC64_TPREL16_HA", /* name */
1589 FALSE, /* partial_inplace */
1590 0, /* src_mask */
1591 0xffff, /* dst_mask */
1592 FALSE), /* pcrel_offset */
1593
1594 /* Like TPREL16_HI, but next higher group of 16 bits. */
1595 HOWTO (R_PPC64_TPREL16_HIGHER,
1596 32, /* rightshift */
1597 1, /* size (0 = byte, 1 = short, 2 = long) */
1598 16, /* bitsize */
1599 FALSE, /* pc_relative */
1600 0, /* bitpos */
1601 complain_overflow_dont, /* complain_on_overflow */
1602 ppc64_elf_unhandled_reloc, /* special_function */
1603 "R_PPC64_TPREL16_HIGHER", /* name */
1604 FALSE, /* partial_inplace */
1605 0, /* src_mask */
1606 0xffff, /* dst_mask */
1607 FALSE), /* pcrel_offset */
1608
1609 /* Like TPREL16_HIGHER, but adjust for low 16 bits. */
1610 HOWTO (R_PPC64_TPREL16_HIGHERA,
1611 32, /* rightshift */
1612 1, /* size (0 = byte, 1 = short, 2 = long) */
1613 16, /* bitsize */
1614 FALSE, /* pc_relative */
1615 0, /* bitpos */
1616 complain_overflow_dont, /* complain_on_overflow */
1617 ppc64_elf_unhandled_reloc, /* special_function */
1618 "R_PPC64_TPREL16_HIGHERA", /* name */
1619 FALSE, /* partial_inplace */
1620 0, /* src_mask */
1621 0xffff, /* dst_mask */
1622 FALSE), /* pcrel_offset */
1623
1624 /* Like TPREL16_HIGHER, but next higher group of 16 bits. */
1625 HOWTO (R_PPC64_TPREL16_HIGHEST,
1626 48, /* rightshift */
1627 1, /* size (0 = byte, 1 = short, 2 = long) */
1628 16, /* bitsize */
1629 FALSE, /* pc_relative */
1630 0, /* bitpos */
1631 complain_overflow_dont, /* complain_on_overflow */
1632 ppc64_elf_unhandled_reloc, /* special_function */
1633 "R_PPC64_TPREL16_HIGHEST", /* name */
1634 FALSE, /* partial_inplace */
1635 0, /* src_mask */
1636 0xffff, /* dst_mask */
1637 FALSE), /* pcrel_offset */
1638
1639 /* Like TPREL16_HIGHEST, but adjust for low 16 bits. */
1640 HOWTO (R_PPC64_TPREL16_HIGHESTA,
1641 48, /* rightshift */
1642 1, /* size (0 = byte, 1 = short, 2 = long) */
1643 16, /* bitsize */
1644 FALSE, /* pc_relative */
1645 0, /* bitpos */
1646 complain_overflow_dont, /* complain_on_overflow */
1647 ppc64_elf_unhandled_reloc, /* special_function */
1648 "R_PPC64_TPREL16_HIGHESTA", /* name */
1649 FALSE, /* partial_inplace */
1650 0, /* src_mask */
1651 0xffff, /* dst_mask */
1652 FALSE), /* pcrel_offset */
1653
1654 /* Like TPREL16, but for insns with a DS field. */
1655 HOWTO (R_PPC64_TPREL16_DS,
1656 0, /* rightshift */
1657 1, /* size (0 = byte, 1 = short, 2 = long) */
1658 16, /* bitsize */
1659 FALSE, /* pc_relative */
1660 0, /* bitpos */
1661 complain_overflow_signed, /* complain_on_overflow */
1662 ppc64_elf_unhandled_reloc, /* special_function */
1663 "R_PPC64_TPREL16_DS", /* name */
1664 FALSE, /* partial_inplace */
1665 0, /* src_mask */
1666 0xfffc, /* dst_mask */
1667 FALSE), /* pcrel_offset */
1668
1669 /* Like TPREL16_DS, but no overflow. */
1670 HOWTO (R_PPC64_TPREL16_LO_DS,
1671 0, /* rightshift */
1672 1, /* size (0 = byte, 1 = short, 2 = long) */
1673 16, /* bitsize */
1674 FALSE, /* pc_relative */
1675 0, /* bitpos */
1676 complain_overflow_dont, /* complain_on_overflow */
1677 ppc64_elf_unhandled_reloc, /* special_function */
1678 "R_PPC64_TPREL16_LO_DS", /* name */
1679 FALSE, /* partial_inplace */
1680 0, /* src_mask */
1681 0xfffc, /* dst_mask */
1682 FALSE), /* pcrel_offset */
1683
1684 /* Allocates two contiguous entries in the GOT to hold a tls_index structure,
1685 with values (sym+add)@dtpmod and (sym+add)@dtprel, and computes the offset
1686 to the first entry relative to the TOC base (r2). */
1687 HOWTO (R_PPC64_GOT_TLSGD16,
1688 0, /* rightshift */
1689 1, /* size (0 = byte, 1 = short, 2 = long) */
1690 16, /* bitsize */
1691 FALSE, /* pc_relative */
1692 0, /* bitpos */
1693 complain_overflow_signed, /* complain_on_overflow */
1694 ppc64_elf_unhandled_reloc, /* special_function */
1695 "R_PPC64_GOT_TLSGD16", /* name */
b34976b6 1696 FALSE, /* partial_inplace */
5bd4f169
AM		 1697 0, /* src_mask */
1698 0xffff, /* dst_mask */
b34976b6 1699 FALSE), /* pcrel_offset */
5bd4f169 1700
411e1bfb
AM		 1701 /* Like GOT_TLSGD16, but no overflow. */
1702 HOWTO (R_PPC64_GOT_TLSGD16_LO,
5bd4f169
AM		 1703 0, /* rightshift */
1704 1, /* size (0 = byte, 1 = short, 2 = long) */
1705 16, /* bitsize */
b34976b6 1706 FALSE, /* pc_relative */
5bd4f169
AM		 1707 0, /* bitpos */
1708 complain_overflow_dont, /* complain_on_overflow */
805fc799 1709 ppc64_elf_unhandled_reloc, /* special_function */
411e1bfb 1710 "R_PPC64_GOT_TLSGD16_LO", /* name */
b34976b6 1711 FALSE, /* partial_inplace */
5bd4f169
AM		 1712 0, /* src_mask */
1713 0xffff, /* dst_mask */
b34976b6 1714 FALSE), /* pcrel_offset */
5bd4f169 1715
411e1bfb
AM		 1716 /* Like GOT_TLSGD16_LO, but next higher group of 16 bits. */
1717 HOWTO (R_PPC64_GOT_TLSGD16_HI,
5bd4f169
AM		 1718 16, /* rightshift */
1719 1, /* size (0 = byte, 1 = short, 2 = long) */
1720 16, /* bitsize */
b34976b6 1721 FALSE, /* pc_relative */
5bd4f169 1722 0, /* bitpos */
f9c6b907 1723 complain_overflow_signed, /* complain_on_overflow */
805fc799 1724 ppc64_elf_unhandled_reloc, /* special_function */
411e1bfb 1725 "R_PPC64_GOT_TLSGD16_HI", /* name */
b34976b6 1726 FALSE, /* partial_inplace */
5bd4f169
AM		 1727 0, /* src_mask */
1728 0xffff, /* dst_mask */
b34976b6 1729 FALSE), /* pcrel_offset */
5bd4f169 1730
411e1bfb
AM		 1731 /* Like GOT_TLSGD16_HI, but adjust for low 16 bits. */
1732 HOWTO (R_PPC64_GOT_TLSGD16_HA,
5bd4f169
AM		 1733 16, /* rightshift */
1734 1, /* size (0 = byte, 1 = short, 2 = long) */
1735 16, /* bitsize */
b34976b6 1736 FALSE, /* pc_relative */
5bd4f169 1737 0, /* bitpos */
f9c6b907 1738 complain_overflow_signed, /* complain_on_overflow */
805fc799 1739 ppc64_elf_unhandled_reloc, /* special_function */
411e1bfb 1740 "R_PPC64_GOT_TLSGD16_HA", /* name */
b34976b6 1741 FALSE, /* partial_inplace */
5bd4f169
AM		 1742 0, /* src_mask */
1743 0xffff, /* dst_mask */
b34976b6 1744 FALSE), /* pcrel_offset */
5bd4f169 1745
411e1bfb
AM		 1746 /* Allocates two contiguous entries in the GOT to hold a tls_index structure,
1747 with values (sym+add)@dtpmod and zero, and computes the offset to the
1748 first entry relative to the TOC base (r2). */
1749 HOWTO (R_PPC64_GOT_TLSLD16,
5bd4f169
AM		 1750 0, /* rightshift */
1751 1, /* size (0 = byte, 1 = short, 2 = long) */
1752 16, /* bitsize */
b34976b6 1753 FALSE, /* pc_relative */
5bd4f169 1754 0, /* bitpos */
411e1bfb
AM		 1755 complain_overflow_signed, /* complain_on_overflow */
1756 ppc64_elf_unhandled_reloc, /* special_function */
1757 "R_PPC64_GOT_TLSLD16", /* name */
b34976b6 1758 FALSE, /* partial_inplace */
d006db6c 1759 0, /* src_mask */
411e1bfb 1760 0xffff, /* dst_mask */
b34976b6 1761 FALSE), /* pcrel_offset */
5bd4f169 1762
411e1bfb
AM		 1763 /* Like GOT_TLSLD16, but no overflow. */
1764 HOWTO (R_PPC64_GOT_TLSLD16_LO,
5bd4f169
AM		 1765 0, /* rightshift */
1766 1, /* size (0 = byte, 1 = short, 2 = long) */
1767 16, /* bitsize */
b34976b6 1768 FALSE, /* pc_relative */
5bd4f169 1769 0, /* bitpos */
411e1bfb
AM		 1770 complain_overflow_dont, /* complain_on_overflow */
1771 ppc64_elf_unhandled_reloc, /* special_function */
1772 "R_PPC64_GOT_TLSLD16_LO", /* name */
b34976b6 1773 FALSE, /* partial_inplace */
d006db6c 1774 0, /* src_mask */
411e1bfb 1775 0xffff, /* dst_mask */
b34976b6 1776 FALSE), /* pcrel_offset */
5bd4f169 1777
411e1bfb
AM		 1778 /* Like GOT_TLSLD16_LO, but next higher group of 16 bits. */
1779 HOWTO (R_PPC64_GOT_TLSLD16_HI,
1780 16, /* rightshift */
5bd4f169
AM		 1781 1, /* size (0 = byte, 1 = short, 2 = long) */
1782 16, /* bitsize */
b34976b6 1783 FALSE, /* pc_relative */
5bd4f169 1784 0, /* bitpos */
f9c6b907 1785 complain_overflow_signed, /* complain_on_overflow */
805fc799 1786 ppc64_elf_unhandled_reloc, /* special_function */
411e1bfb 1787 "R_PPC64_GOT_TLSLD16_HI", /* name */
b34976b6 1788 FALSE, /* partial_inplace */
d006db6c 1789 0, /* src_mask */
411e1bfb 1790 0xffff, /* dst_mask */
b34976b6 1791 FALSE), /* pcrel_offset */
5bd4f169 1792
411e1bfb
AM		 1793 /* Like GOT_TLSLD16_HI, but adjust for low 16 bits. */
1794 HOWTO (R_PPC64_GOT_TLSLD16_HA,
1795 16, /* rightshift */
5bd4f169
AM		 1796 1, /* size (0 = byte, 1 = short, 2 = long) */
1797 16, /* bitsize */
b34976b6 1798 FALSE, /* pc_relative */
5bd4f169 1799 0, /* bitpos */
f9c6b907 1800 complain_overflow_signed, /* complain_on_overflow */
805fc799 1801 ppc64_elf_unhandled_reloc, /* special_function */
411e1bfb 1802 "R_PPC64_GOT_TLSLD16_HA", /* name */
b34976b6 1803 FALSE, /* partial_inplace */
d006db6c 1804 0, /* src_mask */
411e1bfb 1805 0xffff, /* dst_mask */
b34976b6 1806 FALSE), /* pcrel_offset */
5bd4f169 1807
411e1bfb
AM		 1808 /* Allocates an entry in the GOT with value (sym+add)@dtprel, and computes
1809 the offset to the entry relative to the TOC base (r2). */
1810 HOWTO (R_PPC64_GOT_DTPREL16_DS,
5bd4f169
AM		 1811 0, /* rightshift */
1812 1, /* size (0 = byte, 1 = short, 2 = long) */
1813 16, /* bitsize */
b34976b6 1814 FALSE, /* pc_relative */
5bd4f169 1815 0, /* bitpos */
411e1bfb 1816 complain_overflow_signed, /* complain_on_overflow */
805fc799 1817 ppc64_elf_unhandled_reloc, /* special_function */
411e1bfb 1818 "R_PPC64_GOT_DTPREL16_DS", /* name */
b34976b6 1819 FALSE, /* partial_inplace */
d006db6c 1820 0, /* src_mask */
5bd4f169 1821 0xfffc, /* dst_mask */
b34976b6 1822 FALSE), /* pcrel_offset */
5bd4f169 1823
411e1bfb
AM		 1824 /* Like GOT_DTPREL16_DS, but no overflow. */
1825 HOWTO (R_PPC64_GOT_DTPREL16_LO_DS,
5bd4f169 1826 0, /* rightshift */
c061c2d8
AM		 1827 1, /* size (0 = byte, 1 = short, 2 = long) */
1828 16, /* bitsize */
b34976b6 1829 FALSE, /* pc_relative */
5bd4f169 1830 0, /* bitpos */
411e1bfb
AM		 1831 complain_overflow_dont, /* complain_on_overflow */
1832 ppc64_elf_unhandled_reloc, /* special_function */
1833 "R_PPC64_GOT_DTPREL16_LO_DS", /* name */
b34976b6 1834 FALSE, /* partial_inplace */
d006db6c 1835 0, /* src_mask */
c061c2d8 1836 0xfffc, /* dst_mask */
b34976b6 1837 FALSE), /* pcrel_offset */
5bd4f169 1838
411e1bfb
AM		 1839 /* Like GOT_DTPREL16_LO_DS, but next higher group of 16 bits. */
1840 HOWTO (R_PPC64_GOT_DTPREL16_HI,
1841 16, /* rightshift */
5bd4f169
AM		 1842 1, /* size (0 = byte, 1 = short, 2 = long) */
1843 16, /* bitsize */
b34976b6 1844 FALSE, /* pc_relative */
5bd4f169 1845 0, /* bitpos */
f9c6b907 1846 complain_overflow_signed, /* complain_on_overflow */
411e1bfb
AM		 1847 ppc64_elf_unhandled_reloc, /* special_function */
1848 "R_PPC64_GOT_DTPREL16_HI", /* name */
b34976b6 1849 FALSE, /* partial_inplace */
d006db6c 1850 0, /* src_mask */
411e1bfb 1851 0xffff, /* dst_mask */
b34976b6 1852 FALSE), /* pcrel_offset */
5bd4f169 1853
411e1bfb
AM		 1854 /* Like GOT_DTPREL16_HI, but adjust for low 16 bits. */
1855 HOWTO (R_PPC64_GOT_DTPREL16_HA,
1856 16, /* rightshift */
1857 1, /* size (0 = byte, 1 = short, 2 = long) */
1858 16, /* bitsize */
1859 FALSE, /* pc_relative */
1860 0, /* bitpos */
f9c6b907 1861 complain_overflow_signed, /* complain_on_overflow */
411e1bfb
AM		 1862 ppc64_elf_unhandled_reloc, /* special_function */
1863 "R_PPC64_GOT_DTPREL16_HA", /* name */
1864 FALSE, /* partial_inplace */
1865 0, /* src_mask */
1866 0xffff, /* dst_mask */
1867 FALSE), /* pcrel_offset */
1868
1869 /* Allocates an entry in the GOT with value (sym+add)@tprel, and computes the
1870 offset to the entry relative to the TOC base (r2). */
1871 HOWTO (R_PPC64_GOT_TPREL16_DS,
5bd4f169
AM		 1872 0, /* rightshift */
1873 1, /* size (0 = byte, 1 = short, 2 = long) */
1874 16, /* bitsize */
b34976b6 1875 FALSE, /* pc_relative */
5bd4f169
AM		 1876 0, /* bitpos */
1877 complain_overflow_signed, /* complain_on_overflow */
411e1bfb
AM		 1878 ppc64_elf_unhandled_reloc, /* special_function */
1879 "R_PPC64_GOT_TPREL16_DS", /* name */
b34976b6 1880 FALSE, /* partial_inplace */
d006db6c 1881 0, /* src_mask */
ad8e1ba5 1882 0xfffc, /* dst_mask */
b34976b6 1883 FALSE), /* pcrel_offset */
5bd4f169 1884
411e1bfb
AM		 1885 /* Like GOT_TPREL16_DS, but no overflow. */
1886 HOWTO (R_PPC64_GOT_TPREL16_LO_DS,
5bd4f169
AM		 1887 0, /* rightshift */
1888 1, /* size (0 = byte, 1 = short, 2 = long) */
1889 16, /* bitsize */
b34976b6 1890 FALSE, /* pc_relative */
5bd4f169
AM		 1891 0, /* bitpos */
1892 complain_overflow_dont, /* complain_on_overflow */
411e1bfb
AM		 1893 ppc64_elf_unhandled_reloc, /* special_function */
1894 "R_PPC64_GOT_TPREL16_LO_DS", /* name */
b34976b6 1895 FALSE, /* partial_inplace */
d006db6c 1896 0, /* src_mask */
ad8e1ba5 1897 0xfffc, /* dst_mask */
b34976b6 1898 FALSE), /* pcrel_offset */
5bd4f169 1899
411e1bfb
AM		 1900 /* Like GOT_TPREL16_LO_DS, but next higher group of 16 bits. */
1901 HOWTO (R_PPC64_GOT_TPREL16_HI,
1902 16, /* rightshift */
5bd4f169
AM		 1903 1, /* size (0 = byte, 1 = short, 2 = long) */
1904 16, /* bitsize */
b34976b6 1905 FALSE, /* pc_relative */
5bd4f169 1906 0, /* bitpos */
f9c6b907 1907 complain_overflow_signed, /* complain_on_overflow */
805fc799 1908 ppc64_elf_unhandled_reloc, /* special_function */
411e1bfb 1909 "R_PPC64_GOT_TPREL16_HI", /* name */
b34976b6 1910 FALSE, /* partial_inplace */
d006db6c 1911 0, /* src_mask */
411e1bfb 1912 0xffff, /* dst_mask */
b34976b6 1913 FALSE), /* pcrel_offset */
5bd4f169 1914
411e1bfb
AM		 1915 /* Like GOT_TPREL16_HI, but adjust for low 16 bits. */
1916 HOWTO (R_PPC64_GOT_TPREL16_HA,
1917 16, /* rightshift */
5bd4f169
AM		 1918 1, /* size (0 = byte, 1 = short, 2 = long) */
1919 16, /* bitsize */
b34976b6 1920 FALSE, /* pc_relative */
5bd4f169 1921 0, /* bitpos */
f9c6b907 1922 complain_overflow_signed, /* complain_on_overflow */
805fc799 1923 ppc64_elf_unhandled_reloc, /* special_function */
411e1bfb 1924 "R_PPC64_GOT_TPREL16_HA", /* name */
b34976b6 1925 FALSE, /* partial_inplace */
d006db6c 1926 0, /* src_mask */
411e1bfb 1927 0xffff, /* dst_mask */
b34976b6 1928 FALSE), /* pcrel_offset */
5bd4f169 1929
25f23106
AM		 1930 HOWTO (R_PPC64_JMP_IREL, /* type */
1931 0, /* rightshift */
1932 0, /* size (0=byte, 1=short, 2=long, 4=64 bits) */
1933 0, /* bitsize */
1934 FALSE, /* pc_relative */
1935 0, /* bitpos */
1936 complain_overflow_dont, /* complain_on_overflow */
1937 ppc64_elf_unhandled_reloc, /* special_function */
1938 "R_PPC64_JMP_IREL", /* name */
1939 FALSE, /* partial_inplace */
1940 0, /* src_mask */
1941 0, /* dst_mask */
1942 FALSE), /* pcrel_offset */
1943
e054468f
AM		 1944 HOWTO (R_PPC64_IRELATIVE, /* type */
1945 0, /* rightshift */
1946 4, /* size (0=byte, 1=short, 2=long, 4=64 bits) */
1947 64, /* bitsize */
1948 FALSE, /* pc_relative */
1949 0, /* bitpos */
1950 complain_overflow_dont, /* complain_on_overflow */
1951 bfd_elf_generic_reloc, /* special_function */
1952 "R_PPC64_IRELATIVE", /* name */
1953 FALSE, /* partial_inplace */
1954 0, /* src_mask */
1955 ONES (64), /* dst_mask */
1956 FALSE), /* pcrel_offset */
1957
25f23106
AM		 1958 /* A 16 bit relative relocation. */
1959 HOWTO (R_PPC64_REL16, /* type */
1960 0, /* rightshift */
1961 1, /* size (0 = byte, 1 = short, 2 = long) */
1962 16, /* bitsize */
1963 TRUE, /* pc_relative */
1964 0, /* bitpos */
b80eed39 1965 complain_overflow_signed, /* complain_on_overflow */
25f23106
AM		 1966 bfd_elf_generic_reloc, /* special_function */
1967 "R_PPC64_REL16", /* name */
1968 FALSE, /* partial_inplace */
1969 0, /* src_mask */
1970 0xffff, /* dst_mask */
1971 TRUE), /* pcrel_offset */
1972
1973 /* A 16 bit relative relocation without overflow. */
1974 HOWTO (R_PPC64_REL16_LO, /* type */
1975 0, /* rightshift */
1976 1, /* size (0 = byte, 1 = short, 2 = long) */
1977 16, /* bitsize */
1978 TRUE, /* pc_relative */
1979 0, /* bitpos */
1980 complain_overflow_dont,/* complain_on_overflow */
1981 bfd_elf_generic_reloc, /* special_function */
1982 "R_PPC64_REL16_LO", /* name */
1983 FALSE, /* partial_inplace */
1984 0, /* src_mask */
1985 0xffff, /* dst_mask */
1986 TRUE), /* pcrel_offset */
1987
1988 /* The high order 16 bits of a relative address. */
1989 HOWTO (R_PPC64_REL16_HI, /* type */
1990 16, /* rightshift */
1991 1, /* size (0 = byte, 1 = short, 2 = long) */
1992 16, /* bitsize */
1993 TRUE, /* pc_relative */
1994 0, /* bitpos */
f9c6b907 1995 complain_overflow_signed, /* complain_on_overflow */
25f23106
AM		 1996 bfd_elf_generic_reloc, /* special_function */
1997 "R_PPC64_REL16_HI", /* name */
1998 FALSE, /* partial_inplace */
1999 0, /* src_mask */
2000 0xffff, /* dst_mask */
2001 TRUE), /* pcrel_offset */
2002
2003 /* The high order 16 bits of a relative address, plus 1 if the contents of
2004 the low 16 bits, treated as a signed number, is negative. */
2005 HOWTO (R_PPC64_REL16_HA, /* type */
2006 16, /* rightshift */
2007 1, /* size (0 = byte, 1 = short, 2 = long) */
2008 16, /* bitsize */
2009 TRUE, /* pc_relative */
2010 0, /* bitpos */
f9c6b907 2011 complain_overflow_signed, /* complain_on_overflow */
25f23106
AM		 2012 ppc64_elf_ha_reloc, /* special_function */
2013 "R_PPC64_REL16_HA", /* name */
2014 FALSE, /* partial_inplace */
2015 0, /* src_mask */
2016 0xffff, /* dst_mask */
2017 TRUE), /* pcrel_offset */
2018
f9c6b907
AM		 2019 /* Like R_PPC64_ADDR16_HI, but no overflow. */
2020 HOWTO (R_PPC64_ADDR16_HIGH, /* type */
2021 16, /* rightshift */
2022 1, /* size (0 = byte, 1 = short, 2 = long) */
2023 16, /* bitsize */
2024 FALSE, /* pc_relative */
2025 0, /* bitpos */
2026 complain_overflow_dont, /* complain_on_overflow */
2027 bfd_elf_generic_reloc, /* special_function */
2028 "R_PPC64_ADDR16_HIGH", /* name */
2029 FALSE, /* partial_inplace */
2030 0, /* src_mask */
2031 0xffff, /* dst_mask */
2032 FALSE), /* pcrel_offset */
2033
2034 /* Like R_PPC64_ADDR16_HA, but no overflow. */
2035 HOWTO (R_PPC64_ADDR16_HIGHA, /* type */
2036 16, /* rightshift */
2037 1, /* size (0 = byte, 1 = short, 2 = long) */
2038 16, /* bitsize */
2039 FALSE, /* pc_relative */
2040 0, /* bitpos */
2041 complain_overflow_dont, /* complain_on_overflow */
2042 ppc64_elf_ha_reloc, /* special_function */
2043 "R_PPC64_ADDR16_HIGHA", /* name */
2044 FALSE, /* partial_inplace */
2045 0, /* src_mask */
2046 0xffff, /* dst_mask */
2047 FALSE), /* pcrel_offset */
2048
2049 /* Like R_PPC64_DTPREL16_HI, but no overflow. */
2050 HOWTO (R_PPC64_DTPREL16_HIGH,
2051 16, /* rightshift */
2052 1, /* size (0 = byte, 1 = short, 2 = long) */
2053 16, /* bitsize */
2054 FALSE, /* pc_relative */
2055 0, /* bitpos */
2056 complain_overflow_dont, /* complain_on_overflow */
2057 ppc64_elf_unhandled_reloc, /* special_function */
2058 "R_PPC64_DTPREL16_HIGH", /* name */
2059 FALSE, /* partial_inplace */
2060 0, /* src_mask */
2061 0xffff, /* dst_mask */
2062 FALSE), /* pcrel_offset */
2063
2064 /* Like R_PPC64_DTPREL16_HA, but no overflow. */
2065 HOWTO (R_PPC64_DTPREL16_HIGHA,
2066 16, /* rightshift */
2067 1, /* size (0 = byte, 1 = short, 2 = long) */
2068 16, /* bitsize */
2069 FALSE, /* pc_relative */
2070 0, /* bitpos */
2071 complain_overflow_dont, /* complain_on_overflow */
2072 ppc64_elf_unhandled_reloc, /* special_function */
2073 "R_PPC64_DTPREL16_HIGHA", /* name */
2074 FALSE, /* partial_inplace */
2075 0, /* src_mask */
2076 0xffff, /* dst_mask */
2077 FALSE), /* pcrel_offset */
2078
2079 /* Like R_PPC64_TPREL16_HI, but no overflow. */
2080 HOWTO (R_PPC64_TPREL16_HIGH,
2081 16, /* rightshift */
2082 1, /* size (0 = byte, 1 = short, 2 = long) */
2083 16, /* bitsize */
2084 FALSE, /* pc_relative */
2085 0, /* bitpos */
2086 complain_overflow_dont, /* complain_on_overflow */
2087 ppc64_elf_unhandled_reloc, /* special_function */
2088 "R_PPC64_TPREL16_HIGH", /* name */
2089 FALSE, /* partial_inplace */
2090 0, /* src_mask */
2091 0xffff, /* dst_mask */
2092 FALSE), /* pcrel_offset */
2093
2094 /* Like R_PPC64_TPREL16_HA, but no overflow. */
2095 HOWTO (R_PPC64_TPREL16_HIGHA,
2096 16, /* rightshift */
2097 1, /* size (0 = byte, 1 = short, 2 = long) */
2098 16, /* bitsize */
2099 FALSE, /* pc_relative */
2100 0, /* bitpos */
2101 complain_overflow_dont, /* complain_on_overflow */
2102 ppc64_elf_unhandled_reloc, /* special_function */
2103 "R_PPC64_TPREL16_HIGHA", /* name */
2104 FALSE, /* partial_inplace */
2105 0, /* src_mask */
2106 0xffff, /* dst_mask */
2107 FALSE), /* pcrel_offset */
2108
45965137
AM		 2109 /* Like ADDR64, but use local entry point of function. */
2110 HOWTO (R_PPC64_ADDR64_LOCAL, /* type */
2111 0, /* rightshift */
2112 4, /* size (0=byte, 1=short, 2=long, 4=64 bits) */
2113 64, /* bitsize */
2114 FALSE, /* pc_relative */
2115 0, /* bitpos */
2116 complain_overflow_dont, /* complain_on_overflow */
2117 bfd_elf_generic_reloc, /* special_function */
2118 "R_PPC64_ADDR64_LOCAL", /* name */
2119 FALSE, /* partial_inplace */
2120 0, /* src_mask */
2121 ONES (64), /* dst_mask */
2122 FALSE), /* pcrel_offset */
2123
5bd4f169
AM		 2124 /* GNU extension to record C++ vtable hierarchy. */
2125 HOWTO (R_PPC64_GNU_VTINHERIT, /* type */
2126 0, /* rightshift */
2127 0, /* size (0 = byte, 1 = short, 2 = long) */
2128 0, /* bitsize */
b34976b6 2129 FALSE, /* pc_relative */
5bd4f169
AM		 2130 0, /* bitpos */
2131 complain_overflow_dont, /* complain_on_overflow */
2132 NULL, /* special_function */
2133 "R_PPC64_GNU_VTINHERIT", /* name */
b34976b6 2134 FALSE, /* partial_inplace */
5bd4f169
AM		 2135 0, /* src_mask */
2136 0, /* dst_mask */
b34976b6 2137 FALSE), /* pcrel_offset */
5bd4f169
AM		 2138
2139 /* GNU extension to record C++ vtable member usage. */
2140 HOWTO (R_PPC64_GNU_VTENTRY, /* type */
2141 0, /* rightshift */
2142 0, /* size (0 = byte, 1 = short, 2 = long) */
2143 0, /* bitsize */
b34976b6 2144 FALSE, /* pc_relative */
5bd4f169
AM		 2145 0, /* bitpos */
2146 complain_overflow_dont, /* complain_on_overflow */
2147 NULL, /* special_function */
2148 "R_PPC64_GNU_VTENTRY", /* name */
b34976b6 2149 FALSE, /* partial_inplace */
5bd4f169
AM		 2150 0, /* src_mask */
2151 0, /* dst_mask */
b34976b6 2152 FALSE), /* pcrel_offset */
5bd4f169
AM		 2153};
2154
2155\f
2156/* Initialize the ppc64_elf_howto_table, so that linear accesses can
2157 be done. */
2158
2159static void
4ce794b7 2160ppc_howto_init (void)
5bd4f169
AM		 2161{
2162 unsigned int i, type;
2163
2164 for (i = 0;
2165 i < sizeof (ppc64_elf_howto_raw) / sizeof (ppc64_elf_howto_raw[0]);
2166 i++)
2167 {
2168 type = ppc64_elf_howto_raw[i].type;
2169 BFD_ASSERT (type < (sizeof (ppc64_elf_howto_table)
2170 / sizeof (ppc64_elf_howto_table[0])));
2171 ppc64_elf_howto_table[type] = &ppc64_elf_howto_raw[i];
2172 }
2173}
2174
2175static reloc_howto_type *
4ce794b7
AM		 2176ppc64_elf_reloc_type_lookup (bfd *abfd ATTRIBUTE_UNUSED,
2177 bfd_reloc_code_real_type code)
5bd4f169 2178{
411e1bfb 2179 enum elf_ppc64_reloc_type r = R_PPC64_NONE;
5bd4f169
AM		 2180
2181 if (!ppc64_elf_howto_table[R_PPC64_ADDR32])
2182 /* Initialize howto table if needed. */
2183 ppc_howto_init ();
2184
4ce794b7 2185 switch (code)
5bd4f169
AM		 2186 {
2187 default:
4ce794b7 2188 return NULL;
5bd4f169 2189
411e1bfb
AM		 2190 case BFD_RELOC_NONE: r = R_PPC64_NONE;
2191 break;
2192 case BFD_RELOC_32: r = R_PPC64_ADDR32;
2193 break;
2194 case BFD_RELOC_PPC_BA26: r = R_PPC64_ADDR24;
2195 break;
2196 case BFD_RELOC_16: r = R_PPC64_ADDR16;
2197 break;
2198 case BFD_RELOC_LO16: r = R_PPC64_ADDR16_LO;
2199 break;
2200 case BFD_RELOC_HI16: r = R_PPC64_ADDR16_HI;
2201 break;
f9c6b907
AM		 2202 case BFD_RELOC_PPC64_ADDR16_HIGH: r = R_PPC64_ADDR16_HIGH;
2203 break;
411e1bfb 2204 case BFD_RELOC_HI16_S: r = R_PPC64_ADDR16_HA;
5bd4f169 2205 break;
f9c6b907
AM		 2206 case BFD_RELOC_PPC64_ADDR16_HIGHA: r = R_PPC64_ADDR16_HIGHA;
2207 break;
411e1bfb 2208 case BFD_RELOC_PPC_BA16: r = R_PPC64_ADDR14;
5bd4f169 2209 break;
411e1bfb 2210 case BFD_RELOC_PPC_BA16_BRTAKEN: r = R_PPC64_ADDR14_BRTAKEN;
5bd4f169 2211 break;
411e1bfb 2212 case BFD_RELOC_PPC_BA16_BRNTAKEN: r = R_PPC64_ADDR14_BRNTAKEN;
5bd4f169 2213 break;
411e1bfb 2214 case BFD_RELOC_PPC_B26: r = R_PPC64_REL24;
5bd4f169 2215 break;
411e1bfb 2216 case BFD_RELOC_PPC_B16: r = R_PPC64_REL14;
5bd4f169 2217 break;
411e1bfb 2218 case BFD_RELOC_PPC_B16_BRTAKEN: r = R_PPC64_REL14_BRTAKEN;
5bd4f169 2219 break;
411e1bfb 2220 case BFD_RELOC_PPC_B16_BRNTAKEN: r = R_PPC64_REL14_BRNTAKEN;
5bd4f169 2221 break;
411e1bfb 2222 case BFD_RELOC_16_GOTOFF: r = R_PPC64_GOT16;
5bd4f169 2223 break;
411e1bfb 2224 case BFD_RELOC_LO16_GOTOFF: r = R_PPC64_GOT16_LO;
5bd4f169 2225 break;
411e1bfb 2226 case BFD_RELOC_HI16_GOTOFF: r = R_PPC64_GOT16_HI;
5bd4f169 2227 break;
411e1bfb 2228 case BFD_RELOC_HI16_S_GOTOFF: r = R_PPC64_GOT16_HA;
5bd4f169 2229 break;
411e1bfb 2230 case BFD_RELOC_PPC_COPY: r = R_PPC64_COPY;
5bd4f169 2231 break;
411e1bfb 2232 case BFD_RELOC_PPC_GLOB_DAT: r = R_PPC64_GLOB_DAT;
5bd4f169 2233 break;
411e1bfb 2234 case BFD_RELOC_32_PCREL: r = R_PPC64_REL32;
5bd4f169 2235 break;
411e1bfb 2236 case BFD_RELOC_32_PLTOFF: r = R_PPC64_PLT32;
5bd4f169 2237 break;
411e1bfb 2238 case BFD_RELOC_32_PLT_PCREL: r = R_PPC64_PLTREL32;
5bd4f169 2239 break;
411e1bfb 2240 case BFD_RELOC_LO16_PLTOFF: r = R_PPC64_PLT16_LO;
5bd4f169 2241 break;
411e1bfb 2242 case BFD_RELOC_HI16_PLTOFF: r = R_PPC64_PLT16_HI;
5bd4f169 2243 break;
411e1bfb 2244 case BFD_RELOC_HI16_S_PLTOFF: r = R_PPC64_PLT16_HA;
5bd4f169 2245 break;
411e1bfb 2246 case BFD_RELOC_16_BASEREL: r = R_PPC64_SECTOFF;
5bd4f169 2247 break;
411e1bfb 2248 case BFD_RELOC_LO16_BASEREL: r = R_PPC64_SECTOFF_LO;
5bd4f169 2249 break;
411e1bfb 2250 case BFD_RELOC_HI16_BASEREL: r = R_PPC64_SECTOFF_HI;
5bd4f169 2251 break;
411e1bfb 2252 case BFD_RELOC_HI16_S_BASEREL: r = R_PPC64_SECTOFF_HA;
5bd4f169 2253 break;
411e1bfb 2254 case BFD_RELOC_CTOR: r = R_PPC64_ADDR64;
5bd4f169 2255 break;
411e1bfb 2256 case BFD_RELOC_64: r = R_PPC64_ADDR64;
5bd4f169 2257 break;
411e1bfb 2258 case BFD_RELOC_PPC64_HIGHER: r = R_PPC64_ADDR16_HIGHER;
5bd4f169 2259 break;
411e1bfb 2260 case BFD_RELOC_PPC64_HIGHER_S: r = R_PPC64_ADDR16_HIGHERA;
5bd4f169 2261 break;
411e1bfb 2262 case BFD_RELOC_PPC64_HIGHEST: r = R_PPC64_ADDR16_HIGHEST;
5bd4f169 2263 break;
411e1bfb 2264 case BFD_RELOC_PPC64_HIGHEST_S: r = R_PPC64_ADDR16_HIGHESTA;
5bd4f169 2265 break;
411e1bfb 2266 case BFD_RELOC_64_PCREL: r = R_PPC64_REL64;
5bd4f169 2267 break;
411e1bfb 2268 case BFD_RELOC_64_PLTOFF: r = R_PPC64_PLT64;
5bd4f169 2269 break;
411e1bfb 2270 case BFD_RELOC_64_PLT_PCREL: r = R_PPC64_PLTREL64;
5bd4f169 2271 break;
411e1bfb 2272 case BFD_RELOC_PPC_TOC16: r = R_PPC64_TOC16;
5bd4f169 2273 break;
411e1bfb 2274 case BFD_RELOC_PPC64_TOC16_LO: r = R_PPC64_TOC16_LO;
5bd4f169 2275 break;
411e1bfb 2276 case BFD_RELOC_PPC64_TOC16_HI: r = R_PPC64_TOC16_HI;
5bd4f169 2277 break;
411e1bfb 2278 case BFD_RELOC_PPC64_TOC16_HA: r = R_PPC64_TOC16_HA;
5bd4f169 2279 break;
411e1bfb 2280 case BFD_RELOC_PPC64_TOC: r = R_PPC64_TOC;
5bd4f169 2281 break;
411e1bfb 2282 case BFD_RELOC_PPC64_PLTGOT16: r = R_PPC64_PLTGOT16;
5bd4f169 2283 break;
411e1bfb 2284 case BFD_RELOC_PPC64_PLTGOT16_LO: r = R_PPC64_PLTGOT16_LO;
5bd4f169 2285 break;
411e1bfb 2286 case BFD_RELOC_PPC64_PLTGOT16_HI: r = R_PPC64_PLTGOT16_HI;
5bd4f169 2287 break;
411e1bfb 2288 case BFD_RELOC_PPC64_PLTGOT16_HA: r = R_PPC64_PLTGOT16_HA;
5bd4f169 2289 break;
411e1bfb 2290 case BFD_RELOC_PPC64_ADDR16_DS: r = R_PPC64_ADDR16_DS;
5bd4f169 2291 break;
411e1bfb 2292 case BFD_RELOC_PPC64_ADDR16_LO_DS: r = R_PPC64_ADDR16_LO_DS;
5bd4f169 2293 break;
411e1bfb 2294 case BFD_RELOC_PPC64_GOT16_DS: r = R_PPC64_GOT16_DS;
5bd4f169 2295 break;
411e1bfb 2296 case BFD_RELOC_PPC64_GOT16_LO_DS: r = R_PPC64_GOT16_LO_DS;
5bd4f169 2297 break;
411e1bfb 2298 case BFD_RELOC_PPC64_PLT16_LO_DS: r = R_PPC64_PLT16_LO_DS;
5bd4f169 2299 break;
411e1bfb 2300 case BFD_RELOC_PPC64_SECTOFF_DS: r = R_PPC64_SECTOFF_DS;
5bd4f169 2301 break;
411e1bfb 2302 case BFD_RELOC_PPC64_SECTOFF_LO_DS: r = R_PPC64_SECTOFF_LO_DS;
5bd4f169 2303 break;
411e1bfb 2304 case BFD_RELOC_PPC64_TOC16_DS: r = R_PPC64_TOC16_DS;
5bd4f169 2305 break;
411e1bfb 2306 case BFD_RELOC_PPC64_TOC16_LO_DS: r = R_PPC64_TOC16_LO_DS;
5bd4f169 2307 break;
411e1bfb 2308 case BFD_RELOC_PPC64_PLTGOT16_DS: r = R_PPC64_PLTGOT16_DS;
5bd4f169 2309 break;
411e1bfb 2310 case BFD_RELOC_PPC64_PLTGOT16_LO_DS: r = R_PPC64_PLTGOT16_LO_DS;
5bd4f169 2311 break;
411e1bfb 2312 case BFD_RELOC_PPC_TLS: r = R_PPC64_TLS;
5bd4f169 2313 break;
727fc41e
AM		 2314 case BFD_RELOC_PPC_TLSGD: r = R_PPC64_TLSGD;
2315 break;
2316 case BFD_RELOC_PPC_TLSLD: r = R_PPC64_TLSLD;
2317 break;
411e1bfb 2318 case BFD_RELOC_PPC_DTPMOD: r = R_PPC64_DTPMOD64;
5bd4f169 2319 break;
411e1bfb 2320 case BFD_RELOC_PPC_TPREL16: r = R_PPC64_TPREL16;
5bd4f169 2321 break;
411e1bfb 2322 case BFD_RELOC_PPC_TPREL16_LO: r = R_PPC64_TPREL16_LO;
5bd4f169 2323 break;
411e1bfb 2324 case BFD_RELOC_PPC_TPREL16_HI: r = R_PPC64_TPREL16_HI;
5bd4f169 2325 break;
f9c6b907
AM		 2326 case BFD_RELOC_PPC64_TPREL16_HIGH: r = R_PPC64_TPREL16_HIGH;
2327 break;
411e1bfb 2328 case BFD_RELOC_PPC_TPREL16_HA: r = R_PPC64_TPREL16_HA;
5bd4f169 2329 break;
f9c6b907
AM		 2330 case BFD_RELOC_PPC64_TPREL16_HIGHA: r = R_PPC64_TPREL16_HIGHA;
2331 break;
411e1bfb 2332 case BFD_RELOC_PPC_TPREL: r = R_PPC64_TPREL64;
5bd4f169 2333 break;
411e1bfb
AM		 2334 case BFD_RELOC_PPC_DTPREL16: r = R_PPC64_DTPREL16;
2335 break;
2336 case BFD_RELOC_PPC_DTPREL16_LO: r = R_PPC64_DTPREL16_LO;
2337 break;
2338 case BFD_RELOC_PPC_DTPREL16_HI: r = R_PPC64_DTPREL16_HI;
2339 break;
f9c6b907
AM		 2340 case BFD_RELOC_PPC64_DTPREL16_HIGH: r = R_PPC64_DTPREL16_HIGH;
2341 break;
411e1bfb
AM		 2342 case BFD_RELOC_PPC_DTPREL16_HA: r = R_PPC64_DTPREL16_HA;
2343 break;
f9c6b907
AM		 2344 case BFD_RELOC_PPC64_DTPREL16_HIGHA: r = R_PPC64_DTPREL16_HIGHA;
2345 break;
411e1bfb
AM		 2346 case BFD_RELOC_PPC_DTPREL: r = R_PPC64_DTPREL64;
2347 break;
2348 case BFD_RELOC_PPC_GOT_TLSGD16: r = R_PPC64_GOT_TLSGD16;
2349 break;
2350 case BFD_RELOC_PPC_GOT_TLSGD16_LO: r = R_PPC64_GOT_TLSGD16_LO;
2351 break;
2352 case BFD_RELOC_PPC_GOT_TLSGD16_HI: r = R_PPC64_GOT_TLSGD16_HI;
2353 break;
2354 case BFD_RELOC_PPC_GOT_TLSGD16_HA: r = R_PPC64_GOT_TLSGD16_HA;
2355 break;
2356 case BFD_RELOC_PPC_GOT_TLSLD16: r = R_PPC64_GOT_TLSLD16;
2357 break;
2358 case BFD_RELOC_PPC_GOT_TLSLD16_LO: r = R_PPC64_GOT_TLSLD16_LO;
2359 break;
2360 case BFD_RELOC_PPC_GOT_TLSLD16_HI: r = R_PPC64_GOT_TLSLD16_HI;
2361 break;
2362 case BFD_RELOC_PPC_GOT_TLSLD16_HA: r = R_PPC64_GOT_TLSLD16_HA;
2363 break;
2364 case BFD_RELOC_PPC_GOT_TPREL16: r = R_PPC64_GOT_TPREL16_DS;
2365 break;
2366 case BFD_RELOC_PPC_GOT_TPREL16_LO: r = R_PPC64_GOT_TPREL16_LO_DS;
2367 break;
2368 case BFD_RELOC_PPC_GOT_TPREL16_HI: r = R_PPC64_GOT_TPREL16_HI;
2369 break;
2370 case BFD_RELOC_PPC_GOT_TPREL16_HA: r = R_PPC64_GOT_TPREL16_HA;
2371 break;
2372 case BFD_RELOC_PPC_GOT_DTPREL16: r = R_PPC64_GOT_DTPREL16_DS;
2373 break;
2374 case BFD_RELOC_PPC_GOT_DTPREL16_LO: r = R_PPC64_GOT_DTPREL16_LO_DS;
2375 break;
2376 case BFD_RELOC_PPC_GOT_DTPREL16_HI: r = R_PPC64_GOT_DTPREL16_HI;
2377 break;
2378 case BFD_RELOC_PPC_GOT_DTPREL16_HA: r = R_PPC64_GOT_DTPREL16_HA;
2379 break;
2380 case BFD_RELOC_PPC64_TPREL16_DS: r = R_PPC64_TPREL16_DS;
2381 break;
2382 case BFD_RELOC_PPC64_TPREL16_LO_DS: r = R_PPC64_TPREL16_LO_DS;
2383 break;
2384 case BFD_RELOC_PPC64_TPREL16_HIGHER: r = R_PPC64_TPREL16_HIGHER;
2385 break;
2386 case BFD_RELOC_PPC64_TPREL16_HIGHERA: r = R_PPC64_TPREL16_HIGHERA;
2387 break;
2388 case BFD_RELOC_PPC64_TPREL16_HIGHEST: r = R_PPC64_TPREL16_HIGHEST;
2389 break;
2390 case BFD_RELOC_PPC64_TPREL16_HIGHESTA: r = R_PPC64_TPREL16_HIGHESTA;
2391 break;
2392 case BFD_RELOC_PPC64_DTPREL16_DS: r = R_PPC64_DTPREL16_DS;
2393 break;
2394 case BFD_RELOC_PPC64_DTPREL16_LO_DS: r = R_PPC64_DTPREL16_LO_DS;
2395 break;
2396 case BFD_RELOC_PPC64_DTPREL16_HIGHER: r = R_PPC64_DTPREL16_HIGHER;
2397 break;
2398 case BFD_RELOC_PPC64_DTPREL16_HIGHERA: r = R_PPC64_DTPREL16_HIGHERA;
2399 break;
2400 case BFD_RELOC_PPC64_DTPREL16_HIGHEST: r = R_PPC64_DTPREL16_HIGHEST;
2401 break;
2402 case BFD_RELOC_PPC64_DTPREL16_HIGHESTA: r = R_PPC64_DTPREL16_HIGHESTA;
2403 break;
25f23106
AM		 2404 case BFD_RELOC_16_PCREL: r = R_PPC64_REL16;
2405 break;
2406 case BFD_RELOC_LO16_PCREL: r = R_PPC64_REL16_LO;
2407 break;
2408 case BFD_RELOC_HI16_PCREL: r = R_PPC64_REL16_HI;
2409 break;
2410 case BFD_RELOC_HI16_S_PCREL: r = R_PPC64_REL16_HA;
2411 break;
45965137
AM		 2412 case BFD_RELOC_PPC64_ADDR64_LOCAL: r = R_PPC64_ADDR64_LOCAL;
2413 break;
411e1bfb
AM		 2414 case BFD_RELOC_VTABLE_INHERIT: r = R_PPC64_GNU_VTINHERIT;
2415 break;
2416 case BFD_RELOC_VTABLE_ENTRY: r = R_PPC64_GNU_VTENTRY;
5bd4f169
AM		 2417 break;
2418 }
2419
4ce794b7 2420 return ppc64_elf_howto_table[r];
5bd4f169
AM		 2421};
2422
157090f7
AM		 2423static reloc_howto_type *
2424ppc64_elf_reloc_name_lookup (bfd *abfd ATTRIBUTE_UNUSED,
2425 const char *r_name)
2426{
2427 unsigned int i;
2428
2429 for (i = 0;
2430 i < sizeof (ppc64_elf_howto_raw) / sizeof (ppc64_elf_howto_raw[0]);
2431 i++)
2432 if (ppc64_elf_howto_raw[i].name != NULL
2433 && strcasecmp (ppc64_elf_howto_raw[i].name, r_name) == 0)
2434 return &ppc64_elf_howto_raw[i];
2435
2436 return NULL;
2437}
2438
5bd4f169
AM		 2439/* Set the howto pointer for a PowerPC ELF reloc. */
2440
2441static void
4ce794b7
AM		 2442ppc64_elf_info_to_howto (bfd *abfd ATTRIBUTE_UNUSED, arelent *cache_ptr,
2443 Elf_Internal_Rela *dst)
5bd4f169 2444{
65f38f15
AM		 2445 unsigned int type;
2446
ef60b7ff 2447 /* Initialize howto table if needed. */
5bd4f169 2448 if (!ppc64_elf_howto_table[R_PPC64_ADDR32])
5bd4f169
AM		 2449 ppc_howto_init ();
2450
65f38f15 2451 type = ELF64_R_TYPE (dst->r_info);
d0fb9a8d
JJ		 2452 if (type >= (sizeof (ppc64_elf_howto_table)
2453 / sizeof (ppc64_elf_howto_table[0])))
2454 {
2455 (*_bfd_error_handler) (_("%B: invalid relocation type %d"),
3ec2b351
NC		 2456 abfd, (int) type);
2457 type = R_PPC64_NONE;
d0fb9a8d 2458 }
65f38f15 2459 cache_ptr->howto = ppc64_elf_howto_table[type];
5bd4f169
AM		 2460}
2461
04c9666a 2462/* Handle the R_PPC64_ADDR16_HA and similar relocs. */
5bd4f169
AM		 2463
2464static bfd_reloc_status_type
4ce794b7
AM		 2465ppc64_elf_ha_reloc (bfd *abfd, arelent *reloc_entry, asymbol *symbol,
2466 void *data, asection *input_section,
2467 bfd *output_bfd, char **error_message)
5bd4f169 2468{
805fc799
AM		 2469 /* If this is a relocatable link (output_bfd test tells us), just
2470 call the generic function. Any adjustment will be done at final
2471 link time. */
2472 if (output_bfd != NULL)
cedb70c5 2473 return bfd_elf_generic_reloc (abfd, reloc_entry, symbol, data,
805fc799
AM		 2474 input_section, output_bfd, error_message);
2475
2476 /* Adjust the addend for sign extension of the low 16 bits.
2477 We won't actually be using the low 16 bits, so trashing them
2478 doesn't matter. */
2479 reloc_entry->addend += 0x8000;
2480 return bfd_reloc_continue;
2481}
5bd4f169 2482
2441e016
AM		 2483static bfd_reloc_status_type
2484ppc64_elf_branch_reloc (bfd *abfd, arelent *reloc_entry, asymbol *symbol,
2485 void *data, asection *input_section,
2486 bfd *output_bfd, char **error_message)
2487{
2488 if (output_bfd != NULL)
2489 return bfd_elf_generic_reloc (abfd, reloc_entry, symbol, data,
2490 input_section, output_bfd, error_message);
2491
699733f6
AM		 2492 if (strcmp (symbol->section->name, ".opd") == 0
2493 && (symbol->section->owner->flags & DYNAMIC) == 0)
2441e016
AM		 2494 {
2495 bfd_vma dest = opd_entry_value (symbol->section,
2496 symbol->value + reloc_entry->addend,
aef36ac1 2497 NULL, NULL, FALSE);
2441e016
AM		 2498 if (dest != (bfd_vma) -1)
2499 reloc_entry->addend = dest - (symbol->value
2500 + symbol->section->output_section->vma
2501 + symbol->section->output_offset);
2502 }
810d4e75
AM		 2503 else
2504 {
2505 elf_symbol_type *elfsym = (elf_symbol_type *) symbol;
2506
2507 if (symbol->section->owner != abfd
2508 && abiversion (symbol->section->owner) >= 2)
2509 {
2510 unsigned int i;
2511
2512 for (i = 0; i < symbol->section->owner->symcount; ++i)
2513 {
2514 asymbol *symdef = symbol->section->owner->outsymbols[i];
2515
2516 if (strcmp (symdef->name, symbol->name) == 0)
2517 {
2518 elfsym = (elf_symbol_type *) symdef;
2519 break;
2520 }
2521 }
2522 }
2523 reloc_entry->addend
2524 += PPC64_LOCAL_ENTRY_OFFSET (elfsym->internal_elf_sym.st_other);
2525 }
2441e016
AM		 2526 return bfd_reloc_continue;
2527}
2528
805fc799 2529static bfd_reloc_status_type
4ce794b7
AM		 2530ppc64_elf_brtaken_reloc (bfd *abfd, arelent *reloc_entry, asymbol *symbol,
2531 void *data, asection *input_section,
2532 bfd *output_bfd, char **error_message)
805fc799
AM		 2533{
2534 long insn;
04c9666a 2535 enum elf_ppc64_reloc_type r_type;
805fc799 2536 bfd_size_type octets;
794e51c0
AM		 2537 /* Assume 'at' branch hints. */
2538 bfd_boolean is_isa_v2 = TRUE;
805fc799
AM		 2539
2540 /* If this is a relocatable link (output_bfd test tells us), just
2541 call the generic function. Any adjustment will be done at final
2542 link time. */
5bd4f169 2543 if (output_bfd != NULL)
cedb70c5 2544 return bfd_elf_generic_reloc (abfd, reloc_entry, symbol, data,
805fc799
AM		 2545 input_section, output_bfd, error_message);
2546
2547 octets = reloc_entry->address * bfd_octets_per_byte (abfd);
2548 insn = bfd_get_32 (abfd, (bfd_byte *) data + octets);
2549 insn &= ~(0x01 << 21);
4ce794b7 2550 r_type = reloc_entry->howto->type;
805fc799
AM		 2551 if (r_type == R_PPC64_ADDR14_BRTAKEN
2552 || r_type == R_PPC64_REL14_BRTAKEN)
cedb70c5 2553 insn |= 0x01 << 21; /* 'y' or 't' bit, lowest bit of BO field. */
805fc799 2554
794e51c0 2555 if (is_isa_v2)
5bd4f169 2556 {
805fc799
AM		 2557 /* Set 'a' bit. This is 0b00010 in BO field for branch
2558 on CR(BI) insns (BO == 001at or 011at), and 0b01000
2559 for branch on CTR insns (BO == 1a00t or 1a01t). */
2560 if ((insn & (0x14 << 21)) == (0x04 << 21))
2561 insn |= 0x02 << 21;
2562 else if ((insn & (0x14 << 21)) == (0x10 << 21))
2563 insn |= 0x08 << 21;
2564 else
2441e016 2565 goto out;
5bd4f169 2566 }
805fc799
AM		 2567 else
2568 {
2569 bfd_vma target = 0;
2570 bfd_vma from;
5bd4f169 2571
805fc799
AM		 2572 if (!bfd_is_com_section (symbol->section))
2573 target = symbol->value;
2574 target += symbol->section->output_section->vma;
2575 target += symbol->section->output_offset;
2576 target += reloc_entry->addend;
5bd4f169 2577
805fc799
AM		 2578 from = (reloc_entry->address
2579 + input_section->output_offset
2580 + input_section->output_section->vma);
5bd4f169 2581
805fc799
AM		 2582 /* Invert 'y' bit if not the default. */
2583 if ((bfd_signed_vma) (target - from) < 0)
2584 insn ^= 0x01 << 21;
2585 }
4ce794b7 2586 bfd_put_32 (abfd, insn, (bfd_byte *) data + octets);
2441e016
AM		 2587 out:
2588 return ppc64_elf_branch_reloc (abfd, reloc_entry, symbol, data,
2589 input_section, output_bfd, error_message);
805fc799 2590}
5bd4f169 2591
805fc799 2592static bfd_reloc_status_type
4ce794b7
AM		 2593ppc64_elf_sectoff_reloc (bfd *abfd, arelent *reloc_entry, asymbol *symbol,
2594 void *data, asection *input_section,
2595 bfd *output_bfd, char **error_message)
805fc799
AM		 2596{
2597 /* If this is a relocatable link (output_bfd test tells us), just
2598 call the generic function. Any adjustment will be done at final
2599 link time. */
2600 if (output_bfd != NULL)
cedb70c5 2601 return bfd_elf_generic_reloc (abfd, reloc_entry, symbol, data,
805fc799 2602 input_section, output_bfd, error_message);
5bd4f169 2603
805fc799
AM		 2604 /* Subtract the symbol section base address. */
2605 reloc_entry->addend -= symbol->section->output_section->vma;
5bd4f169
AM		 2606 return bfd_reloc_continue;
2607}
2608
805fc799 2609static bfd_reloc_status_type
4ce794b7
AM		 2610ppc64_elf_sectoff_ha_reloc (bfd *abfd, arelent *reloc_entry, asymbol *symbol,
2611 void *data, asection *input_section,
2612 bfd *output_bfd, char **error_message)
805fc799
AM		 2613{
2614 /* If this is a relocatable link (output_bfd test tells us), just
2615 call the generic function. Any adjustment will be done at final
2616 link time. */
2617 if (output_bfd != NULL)
cedb70c5 2618 return bfd_elf_generic_reloc (abfd, reloc_entry, symbol, data,
805fc799
AM		 2619 input_section, output_bfd, error_message);
2620
2621 /* Subtract the symbol section base address. */
2622 reloc_entry->addend -= symbol->section->output_section->vma;
2623
2624 /* Adjust the addend for sign extension of the low 16 bits. */
2625 reloc_entry->addend += 0x8000;
2626 return bfd_reloc_continue;
2627}
2628
2629static bfd_reloc_status_type
4ce794b7
AM		 2630ppc64_elf_toc_reloc (bfd *abfd, arelent *reloc_entry, asymbol *symbol,
2631 void *data, asection *input_section,
2632 bfd *output_bfd, char **error_message)
805fc799
AM		 2633{
2634 bfd_vma TOCstart;
2635
2636 /* If this is a relocatable link (output_bfd test tells us), just
2637 call the generic function. Any adjustment will be done at final
2638 link time. */
2639 if (output_bfd != NULL)
cedb70c5 2640 return bfd_elf_generic_reloc (abfd, reloc_entry, symbol, data,
805fc799
AM		 2641 input_section, output_bfd, error_message);
2642
2643 TOCstart = _bfd_get_gp_value (input_section->output_section->owner);
2644 if (TOCstart == 0)
1c865ab2 2645 TOCstart = ppc64_elf_set_toc (NULL, input_section->output_section->owner);
805fc799
AM		 2646
2647 /* Subtract the TOC base address. */
2648 reloc_entry->addend -= TOCstart + TOC_BASE_OFF;
2649 return bfd_reloc_continue;
2650}
2651
2652static bfd_reloc_status_type
4ce794b7
AM		 2653ppc64_elf_toc_ha_reloc (bfd *abfd, arelent *reloc_entry, asymbol *symbol,
2654 void *data, asection *input_section,
2655 bfd *output_bfd, char **error_message)
805fc799
AM		 2656{
2657 bfd_vma TOCstart;
2658
2659 /* If this is a relocatable link (output_bfd test tells us), just
2660 call the generic function. Any adjustment will be done at final
2661 link time. */
2662 if (output_bfd != NULL)
cedb70c5 2663 return bfd_elf_generic_reloc (abfd, reloc_entry, symbol, data,
805fc799
AM		 2664 input_section, output_bfd, error_message);
2665
2666 TOCstart = _bfd_get_gp_value (input_section->output_section->owner);
2667 if (TOCstart == 0)
1c865ab2 2668 TOCstart = ppc64_elf_set_toc (NULL, input_section->output_section->owner);
805fc799
AM		 2669
2670 /* Subtract the TOC base address. */
2671 reloc_entry->addend -= TOCstart + TOC_BASE_OFF;
2672
2673 /* Adjust the addend for sign extension of the low 16 bits. */
2674 reloc_entry->addend += 0x8000;
2675 return bfd_reloc_continue;
2676}
2677
2678static bfd_reloc_status_type
4ce794b7
AM		 2679ppc64_elf_toc64_reloc (bfd *abfd, arelent *reloc_entry, asymbol *symbol,
2680 void *data, asection *input_section,
2681 bfd *output_bfd, char **error_message)
805fc799
AM		 2682{
2683 bfd_vma TOCstart;
2684 bfd_size_type octets;
2685
2686 /* If this is a relocatable link (output_bfd test tells us), just
2687 call the generic function. Any adjustment will be done at final
2688 link time. */
2689 if (output_bfd != NULL)
cedb70c5 2690 return bfd_elf_generic_reloc (abfd, reloc_entry, symbol, data,
805fc799
AM		 2691 input_section, output_bfd, error_message);
2692
2693 TOCstart = _bfd_get_gp_value (input_section->output_section->owner);
2694 if (TOCstart == 0)
1c865ab2 2695 TOCstart = ppc64_elf_set_toc (NULL, input_section->output_section->owner);
805fc799
AM		 2696
2697 octets = reloc_entry->address * bfd_octets_per_byte (abfd);
2698 bfd_put_64 (abfd, TOCstart + TOC_BASE_OFF, (bfd_byte *) data + octets);
2699 return bfd_reloc_ok;
2700}
2701
2702static bfd_reloc_status_type
4ce794b7
AM		 2703ppc64_elf_unhandled_reloc (bfd *abfd, arelent *reloc_entry, asymbol *symbol,
2704 void *data, asection *input_section,
2705 bfd *output_bfd, char **error_message)
805fc799
AM		 2706{
2707 /* If this is a relocatable link (output_bfd test tells us), just
2708 call the generic function. Any adjustment will be done at final
2709 link time. */
2710 if (output_bfd != NULL)
cedb70c5 2711 return bfd_elf_generic_reloc (abfd, reloc_entry, symbol, data,
805fc799
AM		 2712 input_section, output_bfd, error_message);
2713
2714 if (error_message != NULL)
2715 {
2716 static char buf[60];
2717 sprintf (buf, "generic linker can't handle %s",
2718 reloc_entry->howto->name);
2719 *error_message = buf;
2720 }
2721 return bfd_reloc_dangerous;
2722}
2723
927be08e
AM		 2724/* Track GOT entries needed for a given symbol. We might need more
2725 than one got entry per symbol. */
2726struct got_entry
2727{
2728 struct got_entry *next;
2729
2730 /* The symbol addend that we'll be placing in the GOT. */
2731 bfd_vma addend;
2732
2733 /* Unlike other ELF targets, we use separate GOT entries for the same
2734 symbol referenced from different input files. This is to support
2735 automatic multiple TOC/GOT sections, where the TOC base can vary
2736 from one input file to another. After partitioning into TOC groups
2737 we merge entries within the group.
2738
2739 Point to the BFD owning this GOT entry. */
2740 bfd *owner;
2741
2742 /* Zero for non-tls entries, or TLS_TLS and one of TLS_GD, TLS_LD,
2743 TLS_TPREL or TLS_DTPREL for tls entries. */
f961d9dd 2744 unsigned char tls_type;
927be08e
AM		 2745
2746 /* Non-zero if got.ent points to real entry. */
f961d9dd 2747 unsigned char is_indirect;
927be08e
AM		 2748
2749 /* Reference count until size_dynamic_sections, GOT offset thereafter. */
2750 union
2751 {
2752 bfd_signed_vma refcount;
2753 bfd_vma offset;
2754 struct got_entry *ent;
2755 } got;
2756};
2757
2758/* The same for PLT. */
2759struct plt_entry
2760{
2761 struct plt_entry *next;
2762
2763 bfd_vma addend;
2764
2765 union
2766 {
2767 bfd_signed_vma refcount;
2768 bfd_vma offset;
2769 } plt;
2770};
2771
e717da7e
AM		 2772struct ppc64_elf_obj_tdata
2773{
2774 struct elf_obj_tdata elf;
2775
2776 /* Shortcuts to dynamic linker sections. */
2777 asection *got;
2778 asection *relgot;
2779
b3fac117
AM		 2780 /* Used during garbage collection. We attach global symbols defined
2781 on removed .opd entries to this section so that the sym is removed. */
2782 asection *deleted_section;
81688140 2783
927be08e 2784 /* TLS local dynamic got entry handling. Support for multiple GOT
e717da7e 2785 sections means we potentially need one of these for each input bfd. */
927be08e 2786 struct got_entry tlsld_got;
8860955f 2787
729eabd5
AM		 2788 union {
2789 /* A copy of relocs before they are modified for --emit-relocs. */
2790 Elf_Internal_Rela *relocs;
2791
2792 /* Section contents. */
2793 bfd_byte *contents;
2794 } opd;
d77c8a4b
AM		 2795
2796 /* Nonzero if this bfd has small toc/got relocs, ie. that expect
2797 the reloc to be in the range -32768 to 32767. */
98528052
AM		 2798 unsigned int has_small_toc_reloc : 1;
2799
560c8763
AM		 2800 /* Set if toc/got ha relocs detected not using r2, or lo reloc
2801 instruction not one we handle. */
2802 unsigned int unexpected_toc_insn : 1;
e717da7e
AM		 2803};
2804
2805#define ppc64_elf_tdata(bfd) \
2806 ((struct ppc64_elf_obj_tdata *) (bfd)->tdata.any)
2807
2808#define ppc64_tlsld_got(bfd) \
2809 (&ppc64_elf_tdata (bfd)->tlsld_got)
2810
0c8d6e5c
AM		 2811#define is_ppc64_elf(bfd) \
2812 (bfd_get_flavour (bfd) == bfd_target_elf_flavour \
4dfe6ac6 2813 && elf_object_id (bfd) == PPC64_ELF_DATA)
0c8d6e5c 2814
e717da7e
AM		 2815/* Override the generic function because we store some extras. */
2816
2817static bfd_boolean
2818ppc64_elf_mkobject (bfd *abfd)
2819{
0ffa91dd 2820 return bfd_elf_allocate_object (abfd, sizeof (struct ppc64_elf_obj_tdata),
4dfe6ac6 2821 PPC64_ELF_DATA);
e717da7e
AM		 2822}
2823
feee612b
AM		 2824/* Fix bad default arch selected for a 64 bit input bfd when the
2825 default is 32 bit. */
2826
b34976b6 2827static bfd_boolean
4ce794b7 2828ppc64_elf_object_p (bfd *abfd)
feee612b
AM		 2829{
2830 if (abfd->arch_info->the_default && abfd->arch_info->bits_per_word == 32)
2831 {
2832 Elf_Internal_Ehdr *i_ehdr = elf_elfheader (abfd);
2833
2834 if (i_ehdr->e_ident[EI_CLASS] == ELFCLASS64)
2835 {
2836 /* Relies on arch after 32 bit default being 64 bit default. */
2837 abfd->arch_info = abfd->arch_info->next;
2838 BFD_ASSERT (abfd->arch_info->bits_per_word == 64);
2839 }
2840 }
b34976b6 2841 return TRUE;
feee612b
AM		 2842}
2843
d37c89e5
AM		 2844/* Support for core dump NOTE sections. */
2845
2846static bfd_boolean
2847ppc64_elf_grok_prstatus (bfd *abfd, Elf_Internal_Note *note)
2848{
eea6121a 2849 size_t offset, size;
d37c89e5
AM		 2850
2851 if (note->descsz != 504)
2852 return FALSE;
2853
2854 /* pr_cursig */
228e534f 2855 elf_tdata (abfd)->core->signal = bfd_get_16 (abfd, note->descdata + 12);
d37c89e5
AM		 2856
2857 /* pr_pid */
228e534f 2858 elf_tdata (abfd)->core->lwpid = bfd_get_32 (abfd, note->descdata + 32);
d37c89e5
AM		 2859
2860 /* pr_reg */
2861 offset = 112;
eea6121a 2862 size = 384;
d37c89e5
AM		 2863
2864 /* Make a ".reg/999" section. */
2865 return _bfd_elfcore_make_pseudosection (abfd, ".reg",
eea6121a 2866 size, note->descpos + offset);
d37c89e5
AM		 2867}
2868
2869static bfd_boolean
2870ppc64_elf_grok_psinfo (bfd *abfd, Elf_Internal_Note *note)
2871{
2872 if (note->descsz != 136)
2873 return FALSE;
2874
228e534f 2875 elf_tdata (abfd)->core->pid
bc989cdc 2876 = bfd_get_32 (abfd, note->descdata + 24);
228e534f 2877 elf_tdata (abfd)->core->program
d37c89e5 2878 = _bfd_elfcore_strndup (abfd, note->descdata + 40, 16);
228e534f 2879 elf_tdata (abfd)->core->command
d37c89e5
AM		 2880 = _bfd_elfcore_strndup (abfd, note->descdata + 56, 80);
2881
2882 return TRUE;
2883}
2884
183e98be
AM		 2885static char *
2886ppc64_elf_write_core_note (bfd *abfd, char *buf, int *bufsiz, int note_type,
2887 ...)
2888{
2889 switch (note_type)
2890 {
2891 default:
2892 return NULL;
2893
2894 case NT_PRPSINFO:
2895 {
2896 char data[136];
2897 va_list ap;
2898
2899 va_start (ap, note_type);
75cd47ed 2900 memset (data, 0, sizeof (data));
183e98be
AM		 2901 strncpy (data + 40, va_arg (ap, const char *), 16);
2902 strncpy (data + 56, va_arg (ap, const char *), 80);
2903 va_end (ap);
2904 return elfcore_write_note (abfd, buf, bufsiz,
2905 "CORE", note_type, data, sizeof (data));
2906 }
2907
2908 case NT_PRSTATUS:
2909 {
2910 char data[504];
2911 va_list ap;
2912 long pid;
2913 int cursig;
2914 const void *greg;
2915
2916 va_start (ap, note_type);
2917 memset (data, 0, 112);
2918 pid = va_arg (ap, long);
2919 bfd_put_32 (abfd, pid, data + 32);
2920 cursig = va_arg (ap, int);
2921 bfd_put_16 (abfd, cursig, data + 12);
2922 greg = va_arg (ap, const void *);
2923 memcpy (data + 112, greg, 384);
2924 memset (data + 496, 0, 8);
2925 va_end (ap);
2926 return elfcore_write_note (abfd, buf, bufsiz,
2927 "CORE", note_type, data, sizeof (data));
2928 }
2929 }
2930}
2931
5d35169e
AM		 2932/* Add extra PPC sections. */
2933
b35d266b 2934static const struct bfd_elf_special_section ppc64_elf_special_sections[]=
7f4d3958 2935{
0112cd26
NC		 2936 { STRING_COMMA_LEN (".plt"), 0, SHT_NOBITS, 0 },
2937 { STRING_COMMA_LEN (".sbss"), -2, SHT_NOBITS, SHF_ALLOC + SHF_WRITE },
2938 { STRING_COMMA_LEN (".sdata"), -2, SHT_PROGBITS, SHF_ALLOC + SHF_WRITE },
2939 { STRING_COMMA_LEN (".toc"), 0, SHT_PROGBITS, SHF_ALLOC + SHF_WRITE },
2940 { STRING_COMMA_LEN (".toc1"), 0, SHT_PROGBITS, SHF_ALLOC + SHF_WRITE },
2941 { STRING_COMMA_LEN (".tocbss"), 0, SHT_NOBITS, SHF_ALLOC + SHF_WRITE },
2942 { NULL, 0, 0, 0, 0 }
5d35169e
AM		 2943};
2944
7c8fe5c4
AM		 2945enum _ppc64_sec_type {
2946 sec_normal = 0,
2947 sec_opd = 1,
2948 sec_toc = 2
2949};
2950
f0abc2a1
AM		 2951struct _ppc64_elf_section_data
2952{
2953 struct bfd_elf_section_data elf;
411e1bfb 2954
f0abc2a1
AM		 2955 union
2956 {
74f0fb50
AM		 2957 /* An array with one entry for each opd function descriptor. */
2958 struct _opd_sec_data
2959 {
2960 /* Points to the function code section for local opd entries. */
2961 asection **func_sec;
2962
2963 /* After editing .opd, adjust references to opd local syms. */
2964 long *adjust;
2965 } opd;
7c8fe5c4 2966
3a71aa26
AM		 2967 /* An array for toc sections, indexed by offset/8. */
2968 struct _toc_sec_data
2969 {
2970 /* Specifies the relocation symbol index used at a given toc offset. */
2971 unsigned *symndx;
2972
2973 /* And the relocation addend. */
2974 bfd_vma *add;
2975 } toc;
7c8fe5c4
AM		 2976 } u;
2977
2978 enum _ppc64_sec_type sec_type:2;
411e1bfb 2979
7c8fe5c4
AM		 2980 /* Flag set when small branches are detected. Used to
2981 select suitable defaults for the stub group size. */
2982 unsigned int has_14bit_branch:1;
f0abc2a1
AM		 2983};
2984
2985#define ppc64_elf_section_data(sec) \
411e1bfb 2986 ((struct _ppc64_elf_section_data *) elf_section_data (sec))
f0abc2a1
AM		 2987
2988static bfd_boolean
4ce794b7 2989ppc64_elf_new_section_hook (bfd *abfd, asection *sec)
f0abc2a1 2990{
f592407e
AM		 2991 if (!sec->used_by_bfd)
2992 {
2993 struct _ppc64_elf_section_data *sdata;
2994 bfd_size_type amt = sizeof (*sdata);
f0abc2a1 2995
f592407e
AM		 2996 sdata = bfd_zalloc (abfd, amt);
2997 if (sdata == NULL)
2998 return FALSE;
2999 sec->used_by_bfd = sdata;
3000 }
f0abc2a1
AM		 3001
3002 return _bfd_elf_new_section_hook (abfd, sec);
3003}
4025353c 3004
74f0fb50 3005static struct _opd_sec_data *
4025353c
AM		 3006get_opd_info (asection * sec)
3007{
3008 if (sec != NULL
3009 && ppc64_elf_section_data (sec) != NULL
7c8fe5c4 3010 && ppc64_elf_section_data (sec)->sec_type == sec_opd)
74f0fb50 3011 return &ppc64_elf_section_data (sec)->u.opd;
4025353c
AM		 3012 return NULL;
3013}
90e3cdf2
JJ		 3014\f
3015/* Parameters for the qsort hook. */
90e3cdf2
JJ		 3016static bfd_boolean synthetic_relocatable;
3017
699733f6 3018/* qsort comparison function for ppc64_elf_get_synthetic_symtab. */
90e3cdf2
JJ		 3019
3020static int
3021compare_symbols (const void *ap, const void *bp)
3022{
3023 const asymbol *a = * (const asymbol **) ap;
3024 const asymbol *b = * (const asymbol **) bp;
3025
699733f6
AM		 3026 /* Section symbols first. */
3027 if ((a->flags & BSF_SECTION_SYM) && !(b->flags & BSF_SECTION_SYM))
90e3cdf2 3028 return -1;
699733f6 3029 if (!(a->flags & BSF_SECTION_SYM) && (b->flags & BSF_SECTION_SYM))
90e3cdf2
JJ		 3030 return 1;
3031
699733f6 3032 /* then .opd symbols. */
ffcfec52
AM		 3033 if (strcmp (a->section->name, ".opd") == 0
3034 && strcmp (b->section->name, ".opd") != 0)
90e3cdf2 3035 return -1;
ffcfec52
AM		 3036 if (strcmp (a->section->name, ".opd") != 0
3037 && strcmp (b->section->name, ".opd") == 0)
90e3cdf2
JJ		 3038 return 1;
3039
699733f6 3040 /* then other code symbols. */
90e3cdf2
JJ		 3041 if ((a->section->flags & (SEC_CODE | SEC_ALLOC | SEC_THREAD_LOCAL))
3042 == (SEC_CODE | SEC_ALLOC)
3043 && (b->section->flags & (SEC_CODE | SEC_ALLOC | SEC_THREAD_LOCAL))
3044 != (SEC_CODE | SEC_ALLOC))
3045 return -1;
3046
3047 if ((a->section->flags & (SEC_CODE | SEC_ALLOC | SEC_THREAD_LOCAL))
3048 != (SEC_CODE | SEC_ALLOC)
3049 && (b->section->flags & (SEC_CODE | SEC_ALLOC | SEC_THREAD_LOCAL))
3050 == (SEC_CODE | SEC_ALLOC))
3051 return 1;
3052
3053 if (synthetic_relocatable)
3054 {
3055 if (a->section->id < b->section->id)
3056 return -1;
3057
3058 if (a->section->id > b->section->id)
3059 return 1;
3060 }
3061
3062 if (a->value + a->section->vma < b->value + b->section->vma)
3063 return -1;
3064
3065 if (a->value + a->section->vma > b->value + b->section->vma)
3066 return 1;
3067
4d35a0aa
AM		 3068 /* For syms with the same value, prefer strong dynamic global function
3069 syms over other syms. */
3070 if ((a->flags & BSF_GLOBAL) != 0 && (b->flags & BSF_GLOBAL) == 0)
3071 return -1;
3072
3073 if ((a->flags & BSF_GLOBAL) == 0 && (b->flags & BSF_GLOBAL) != 0)
3074 return 1;
3075
3076 if ((a->flags & BSF_FUNCTION) != 0 && (b->flags & BSF_FUNCTION) == 0)
3077 return -1;
3078
3079 if ((a->flags & BSF_FUNCTION) == 0 && (b->flags & BSF_FUNCTION) != 0)
3080 return 1;
3081
3082 if ((a->flags & BSF_WEAK) == 0 && (b->flags & BSF_WEAK) != 0)
3083 return -1;
3084
3085 if ((a->flags & BSF_WEAK) != 0 && (b->flags & BSF_WEAK) == 0)
3086 return 1;
3087
3088 if ((a->flags & BSF_DYNAMIC) != 0 && (b->flags & BSF_DYNAMIC) == 0)
3089 return -1;
3090
3091 if ((a->flags & BSF_DYNAMIC) == 0 && (b->flags & BSF_DYNAMIC) != 0)
3092 return 1;
3093
90e3cdf2
JJ		 3094 return 0;
3095}
3096
699733f6 3097/* Search SYMS for a symbol of the given VALUE. */
90e3cdf2 3098
699733f6
AM		 3099static asymbol *
3100sym_exists_at (asymbol **syms, long lo, long hi, int id, bfd_vma value)
90e3cdf2 3101{
699733f6 3102 long mid;
90e3cdf2 3103
699733f6
AM		 3104 if (id == -1)
3105 {
3106 while (lo < hi)
3107 {
3108 mid = (lo + hi) >> 1;
3109 if (syms[mid]->value + syms[mid]->section->vma < value)
3110 lo = mid + 1;
3111 else if (syms[mid]->value + syms[mid]->section->vma > value)
3112 hi = mid;
3113 else
3114 return syms[mid];
3115 }
3116 }
3117 else
3118 {
3119 while (lo < hi)
3120 {
3121 mid = (lo + hi) >> 1;
3122 if (syms[mid]->section->id < id)
3123 lo = mid + 1;
3124 else if (syms[mid]->section->id > id)
3125 hi = mid;
3126 else if (syms[mid]->value < value)
3127 lo = mid + 1;
3128 else if (syms[mid]->value > value)
3129 hi = mid;
3130 else
3131 return syms[mid];
3132 }
3133 }
3134 return NULL;
90e3cdf2
JJ		 3135}
3136
468392fb
AM		 3137static bfd_boolean
3138section_covers_vma (bfd *abfd ATTRIBUTE_UNUSED, asection *section, void *ptr)
3139{
3140 bfd_vma vma = *(bfd_vma *) ptr;
3141 return ((section->flags & SEC_ALLOC) != 0
3142 && section->vma <= vma
3143 && vma < section->vma + section->size);
3144}
3145
699733f6 3146/* Create synthetic symbols, effectively restoring "dot-symbol" function
468392fb 3147 entry syms. Also generate @plt symbols for the glink branch table. */
90e3cdf2
JJ		 3148
3149static long
a7535cf3
AM		 3150ppc64_elf_get_synthetic_symtab (bfd *abfd,
3151 long static_count, asymbol **static_syms,
3152 long dyn_count, asymbol **dyn_syms,
c9727e01 3153 asymbol **ret)
90e3cdf2
JJ		 3154{
3155 asymbol *s;
699733f6
AM		 3156 long i;
3157 long count;
90e3cdf2 3158 char *names;
a7535cf3 3159 long symcount, codesecsym, codesecsymend, secsymend, opdsymend;
ee67d69a 3160 asection *opd = NULL;
90e3cdf2 3161 bfd_boolean relocatable = (abfd->flags & (EXEC_P | DYNAMIC)) == 0;
a7535cf3 3162 asymbol **syms;
ee67d69a 3163 int abi = abiversion (abfd);
90e3cdf2
JJ		 3164
3165 *ret = NULL;
3166
ee67d69a
AM		 3167 if (abi < 2)
3168 {
3169 opd = bfd_get_section_by_name (abfd, ".opd");
3170 if (opd == NULL && abi == 1)
3171 return 0;
3172 }
90e3cdf2 3173
a7535cf3 3174 symcount = static_count;
c9727e01 3175 if (!relocatable)
a7535cf3 3176 symcount += dyn_count;
90e3cdf2 3177 if (symcount == 0)
c9727e01 3178 return 0;
90e3cdf2 3179
a7535cf3
AM		 3180 syms = bfd_malloc ((symcount + 1) * sizeof (*syms));
3181 if (syms == NULL)
7356fed5 3182 return -1;
a7535cf3
AM		 3183
3184 if (!relocatable && static_count != 0 && dyn_count != 0)
3185 {
3186 /* Use both symbol tables. */
3187 memcpy (syms, static_syms, static_count * sizeof (*syms));
3188 memcpy (syms + static_count, dyn_syms, (dyn_count + 1) * sizeof (*syms));
3189 }
3190 else if (!relocatable && static_count == 0)
3191 memcpy (syms, dyn_syms, (symcount + 1) * sizeof (*syms));
3192 else
3193 memcpy (syms, static_syms, (symcount + 1) * sizeof (*syms));
3194
90e3cdf2 3195 synthetic_relocatable = relocatable;
595da8c5 3196 qsort (syms, symcount, sizeof (*syms), compare_symbols);
90e3cdf2 3197
c9727e01
AM		 3198 if (!relocatable && symcount > 1)
3199 {
3200 long j;
3201 /* Trim duplicate syms, since we may have merged the normal and
3202 dynamic symbols. Actually, we only care about syms that have
3b36f7e6 3203 different values, so trim any with the same value. */
c9727e01
AM		 3204 for (i = 1, j = 1; i < symcount; ++i)
3205 if (syms[i - 1]->value + syms[i - 1]->section->vma
3206 != syms[i]->value + syms[i]->section->vma)
3207 syms[j++] = syms[i];
3208 symcount = j;
3209 }
3210
699733f6 3211 i = 0;
ffcfec52 3212 if (strcmp (syms[i]->section->name, ".opd") == 0)
699733f6
AM		 3213 ++i;
3214 codesecsym = i;
90e3cdf2 3215
699733f6
AM		 3216 for (; i < symcount; ++i)
3217 if (((syms[i]->section->flags & (SEC_CODE | SEC_ALLOC | SEC_THREAD_LOCAL))
3218 != (SEC_CODE | SEC_ALLOC))
3219 || (syms[i]->flags & BSF_SECTION_SYM) == 0)
3220 break;
3221 codesecsymend = i;
90e3cdf2 3222
699733f6
AM		 3223 for (; i < symcount; ++i)
3224 if ((syms[i]->flags & BSF_SECTION_SYM) == 0)
3225 break;
3226 secsymend = i;
90e3cdf2 3227
699733f6 3228 for (; i < symcount; ++i)
ffcfec52 3229 if (strcmp (syms[i]->section->name, ".opd") != 0)
699733f6
AM		 3230 break;
3231 opdsymend = i;
90e3cdf2 3232
699733f6
AM		 3233 for (; i < symcount; ++i)
3234 if ((syms[i]->section->flags & (SEC_CODE | SEC_ALLOC | SEC_THREAD_LOCAL))
3235 != (SEC_CODE | SEC_ALLOC))
3236 break;
3237 symcount = i;
3238
c9727e01 3239 count = 0;
90e3cdf2 3240
699733f6 3241 if (relocatable)
90e3cdf2 3242 {
699733f6
AM		 3243 bfd_boolean (*slurp_relocs) (bfd *, asection *, asymbol **, bfd_boolean);
3244 arelent *r;
3245 size_t size;
3246 long relcount;
90e3cdf2 3247
468392fb
AM		 3248 if (opdsymend == secsymend)
3249 goto done;
3250
699733f6 3251 slurp_relocs = get_elf_backend_data (abfd)->s->slurp_reloc_table;
90e3cdf2 3252 relcount = (opd->flags & SEC_RELOC) ? opd->reloc_count : 0;
7356fed5 3253 if (relcount == 0)
c9727e01 3254 goto done;
90e3cdf2 3255
7356fed5
AM		 3256 if (!(*slurp_relocs) (abfd, opd, static_syms, FALSE))
3257 {
3258 count = -1;
3259 goto done;
3260 }
3261
699733f6 3262 size = 0;
595da8c5 3263 for (i = secsymend, r = opd->relocation; i < opdsymend; ++i)
699733f6
AM		 3264 {
3265 asymbol *sym;
90e3cdf2 3266
595da8c5 3267 while (r < opd->relocation + relcount
699733f6
AM		 3268 && r->address < syms[i]->value + opd->vma)
3269 ++r;
90e3cdf2 3270
595da8c5 3271 if (r == opd->relocation + relcount)
699733f6 3272 break;
90e3cdf2 3273
699733f6
AM		 3274 if (r->address != syms[i]->value + opd->vma)
3275 continue;
90e3cdf2 3276
699733f6
AM		 3277 if (r->howto->type != R_PPC64_ADDR64)
3278 continue;
90e3cdf2 3279
699733f6
AM		 3280 sym = *r->sym_ptr_ptr;
3281 if (!sym_exists_at (syms, opdsymend, symcount,
3282 sym->section->id, sym->value + r->addend))
3283 {
3284 ++count;
3285 size += sizeof (asymbol);
3286 size += strlen (syms[i]->name) + 2;
3287 }
3288 }
90e3cdf2 3289
699733f6
AM		 3290 s = *ret = bfd_malloc (size);
3291 if (s == NULL)
3292 {
7356fed5 3293 count = -1;
c9727e01 3294 goto done;
699733f6 3295 }
90e3cdf2 3296
699733f6 3297 names = (char *) (s + count);
90e3cdf2 3298
595da8c5 3299 for (i = secsymend, r = opd->relocation; i < opdsymend; ++i)
90e3cdf2 3300 {
699733f6 3301 asymbol *sym;
90e3cdf2 3302
595da8c5 3303 while (r < opd->relocation + relcount
699733f6
AM		 3304 && r->address < syms[i]->value + opd->vma)
3305 ++r;
90e3cdf2 3306
595da8c5 3307 if (r == opd->relocation + relcount)
699733f6
AM		 3308 break;
3309
3310 if (r->address != syms[i]->value + opd->vma)
3311 continue;
3312
3313 if (r->howto->type != R_PPC64_ADDR64)
3314 continue;
90e3cdf2 3315
699733f6
AM		 3316 sym = *r->sym_ptr_ptr;
3317 if (!sym_exists_at (syms, opdsymend, symcount,
3318 sym->section->id, sym->value + r->addend))
3319 {
3320 size_t len;
3321
3322 *s = *syms[i];
6ba2a415 3323 s->flags |= BSF_SYNTHETIC;
699733f6
AM		 3324 s->section = sym->section;
3325 s->value = sym->value + r->addend;
3326 s->name = names;
3327 *names++ = '.';
3328 len = strlen (syms[i]->name);
3329 memcpy (names, syms[i]->name, len + 1);
3330 names += len + 1;
6f610d07
UW		 3331 /* Have udata.p point back to the original symbol this
3332 synthetic symbol was derived from. */
3333 s->udata.p = syms[i];
699733f6
AM		 3334 s++;
3335 }
3336 }
3337 }
3338 else
90e3cdf2 3339 {
468392fb 3340 bfd_boolean (*slurp_relocs) (bfd *, asection *, asymbol **, bfd_boolean);
ee67d69a 3341 bfd_byte *contents = NULL;
699733f6 3342 size_t size;
468392fb
AM		 3343 long plt_count = 0;
3344 bfd_vma glink_vma = 0, resolv_vma = 0;
3345 asection *dynamic, *glink = NULL, *relplt = NULL;
3346 arelent *p;
90e3cdf2 3347
ee67d69a 3348 if (opd != NULL && !bfd_malloc_and_get_section (abfd, opd, &contents))
699733f6 3349 {
ee67d69a 3350 free_contents_and_exit:
699733f6 3351 if (contents)
ee67d69a 3352 free (contents);
7356fed5 3353 count = -1;
c9727e01 3354 goto done;
699733f6 3355 }
90e3cdf2 3356
699733f6
AM		 3357 size = 0;
3358 for (i = secsymend; i < opdsymend; ++i)
3359 {
3360 bfd_vma ent;
90e3cdf2 3361
5ef11c02
AM		 3362 /* Ignore bogus symbols. */
3363 if (syms[i]->value > opd->size - 8)
3364 continue;
3365
699733f6
AM		 3366 ent = bfd_get_64 (abfd, contents + syms[i]->value);
3367 if (!sym_exists_at (syms, opdsymend, symcount, -1, ent))
3368 {
3369 ++count;
3370 size += sizeof (asymbol);
3371 size += strlen (syms[i]->name) + 2;
3372 }
3373 }
90e3cdf2 3374
468392fb 3375 /* Get start of .glink stubs from DT_PPC64_GLINK. */
066ee829
AM		 3376 if (dyn_count != 0
3377 && (dynamic = bfd_get_section_by_name (abfd, ".dynamic")) != NULL)
468392fb
AM		 3378 {
3379 bfd_byte *dynbuf, *extdyn, *extdynend;
3380 size_t extdynsize;
3381 void (*swap_dyn_in) (bfd *, const void *, Elf_Internal_Dyn *);
3382
3383 if (!bfd_malloc_and_get_section (abfd, dynamic, &dynbuf))
3384 goto free_contents_and_exit;
3385
3386 extdynsize = get_elf_backend_data (abfd)->s->sizeof_dyn;
3387 swap_dyn_in = get_elf_backend_data (abfd)->s->swap_dyn_in;
3388
3389 extdyn = dynbuf;
3390 extdynend = extdyn + dynamic->size;
3391 for (; extdyn < extdynend; extdyn += extdynsize)
3392 {
3393 Elf_Internal_Dyn dyn;
3394 (*swap_dyn_in) (abfd, extdyn, &dyn);
3395
3396 if (dyn.d_tag == DT_NULL)
3397 break;
3398
3399 if (dyn.d_tag == DT_PPC64_GLINK)
3400 {
b9e5796b
AM		 3401 /* The first glink stub starts at offset 32; see
3402 comment in ppc64_elf_finish_dynamic_sections. */
3403 glink_vma = dyn.d_un.d_val + GLINK_CALL_STUB_SIZE - 8 * 4;
468392fb
AM		 3404 /* The .glink section usually does not survive the final
3405 link; search for the section (usually .text) where the
3406 glink stubs now reside. */
3407 glink = bfd_sections_find_if (abfd, section_covers_vma,
3408 &glink_vma);
3409 break;
3410 }
3411 }
3412
3413 free (dynbuf);
3414 }
3415
3416 if (glink != NULL)
3417 {
3418 /* Determine __glink trampoline by reading the relative branch
3419 from the first glink stub. */
3420 bfd_byte buf[4];
b9e5796b
AM		 3421 unsigned int off = 0;
3422
3423 while (bfd_get_section_contents (abfd, glink, buf,
3424 glink_vma + off - glink->vma, 4))
468392fb
AM		 3425 {
3426 unsigned int insn = bfd_get_32 (abfd, buf);
3427 insn ^= B_DOT;
3428 if ((insn & ~0x3fffffc) == 0)
b9e5796b
AM		 3429 {
3430 resolv_vma = glink_vma + off + (insn ^ 0x2000000) - 0x2000000;
3431 break;
3432 }
3433 off += 4;
3434 if (off > 4)
3435 break;
468392fb
AM		 3436 }
3437
3438 if (resolv_vma)
3439 size += sizeof (asymbol) + sizeof ("__glink_PLTresolve");
468392fb 3440
066ee829
AM		 3441 relplt = bfd_get_section_by_name (abfd, ".rela.plt");
3442 if (relplt != NULL)
3443 {
3444 slurp_relocs = get_elf_backend_data (abfd)->s->slurp_reloc_table;
3445 if (! (*slurp_relocs) (abfd, relplt, dyn_syms, TRUE))
3446 goto free_contents_and_exit;
68ffbac6 3447
066ee829
AM		 3448 plt_count = relplt->size / sizeof (Elf64_External_Rela);
3449 size += plt_count * sizeof (asymbol);
468392fb 3450
066ee829
AM		 3451 p = relplt->relocation;
3452 for (i = 0; i < plt_count; i++, p++)
e054468f
AM		 3453 {
3454 size += strlen ((*p->sym_ptr_ptr)->name) + sizeof ("@plt");
3455 if (p->addend != 0)
3456 size += sizeof ("+0x") - 1 + 16;
3457 }
066ee829 3458 }
468392fb
AM		 3459 }
3460
699733f6
AM		 3461 s = *ret = bfd_malloc (size);
3462 if (s == NULL)
7356fed5 3463 goto free_contents_and_exit;
90e3cdf2 3464
468392fb 3465 names = (char *) (s + count + plt_count + (resolv_vma != 0));
90e3cdf2 3466
699733f6 3467 for (i = secsymend; i < opdsymend; ++i)
90e3cdf2 3468 {
699733f6 3469 bfd_vma ent;
90e3cdf2 3470
5ef11c02
AM		 3471 if (syms[i]->value > opd->size - 8)
3472 continue;
3473
699733f6
AM		 3474 ent = bfd_get_64 (abfd, contents + syms[i]->value);
3475 if (!sym_exists_at (syms, opdsymend, symcount, -1, ent))
90e3cdf2 3476 {
c9727e01 3477 long lo, hi;
699733f6 3478 size_t len;
c9727e01 3479 asection *sec = abfd->sections;
90e3cdf2 3480
699733f6
AM		 3481 *s = *syms[i];
3482 lo = codesecsym;
3483 hi = codesecsymend;
3484 while (lo < hi)
3485 {
c9727e01 3486 long mid = (lo + hi) >> 1;
699733f6
AM		 3487 if (syms[mid]->section->vma < ent)
3488 lo = mid + 1;
3489 else if (syms[mid]->section->vma > ent)
3490 hi = mid;
3491 else
c9727e01
AM		 3492 {
3493 sec = syms[mid]->section;
3494 break;
3495 }
699733f6
AM		 3496 }
3497
c9727e01 3498 if (lo >= hi && lo > codesecsym)
699733f6 3499 sec = syms[lo - 1]->section;
699733f6
AM		 3500
3501 for (; sec != NULL; sec = sec->next)
3502 {
3503 if (sec->vma > ent)
3504 break;
63524580
JK		 3505 /* SEC_LOAD may not be set if SEC is from a separate debug
3506 info file. */
3507 if ((sec->flags & SEC_ALLOC) == 0)
699733f6
AM		 3508 break;
3509 if ((sec->flags & SEC_CODE) != 0)
3510 s->section = sec;
3511 }
6ba2a415 3512 s->flags |= BSF_SYNTHETIC;
699733f6
AM		 3513 s->value = ent - s->section->vma;
3514 s->name = names;
3515 *names++ = '.';
3516 len = strlen (syms[i]->name);
3517 memcpy (names, syms[i]->name, len + 1);
3518 names += len + 1;
6f610d07
UW		 3519 /* Have udata.p point back to the original symbol this
3520 synthetic symbol was derived from. */
3521 s->udata.p = syms[i];
699733f6 3522 s++;
90e3cdf2 3523 }
90e3cdf2 3524 }
699733f6 3525 free (contents);
468392fb
AM		 3526
3527 if (glink != NULL && relplt != NULL)
3528 {
3529 if (resolv_vma)
3530 {
3531 /* Add a symbol for the main glink trampoline. */
86a4952b 3532 memset (s, 0, sizeof *s);
468392fb 3533 s->the_bfd = abfd;
6ba2a415 3534 s->flags = BSF_GLOBAL | BSF_SYNTHETIC;
468392fb
AM		 3535 s->section = glink;
3536 s->value = resolv_vma - glink->vma;
3537 s->name = names;
3538 memcpy (names, "__glink_PLTresolve", sizeof ("__glink_PLTresolve"));
3539 names += sizeof ("__glink_PLTresolve");
3540 s++;
3541 count++;
3542 }
3543
3544 /* FIXME: It would be very much nicer to put sym@plt on the
3545 stub rather than on the glink branch table entry. The
3546 objdump disassembler would then use a sensible symbol
3547 name on plt calls. The difficulty in doing so is
3548 a) finding the stubs, and,
3549 b) matching stubs against plt entries, and,
3550 c) there can be multiple stubs for a given plt entry.
3551
3552 Solving (a) could be done by code scanning, but older
3553 ppc64 binaries used different stubs to current code.
3554 (b) is the tricky one since you need to known the toc
3555 pointer for at least one function that uses a pic stub to
3556 be able to calculate the plt address referenced.
3557 (c) means gdb would need to set multiple breakpoints (or
3558 find the glink branch itself) when setting breakpoints
3559 for pending shared library loads. */
3560 p = relplt->relocation;
3561 for (i = 0; i < plt_count; i++, p++)
3562 {
3563 size_t len;
3564
3565 *s = **p->sym_ptr_ptr;
3566 /* Undefined syms won't have BSF_LOCAL or BSF_GLOBAL set. Since
3567 we are defining a symbol, ensure one of them is set. */
3568 if ((s->flags & BSF_LOCAL) == 0)
3569 s->flags |= BSF_GLOBAL;
6ba2a415 3570 s->flags |= BSF_SYNTHETIC;
468392fb
AM		 3571 s->section = glink;
3572 s->value = glink_vma - glink->vma;
3573 s->name = names;
3574 s->udata.p = NULL;
3575 len = strlen ((*p->sym_ptr_ptr)->name);
3576 memcpy (names, (*p->sym_ptr_ptr)->name, len);
3577 names += len;
e054468f
AM		 3578 if (p->addend != 0)
3579 {
3580 memcpy (names, "+0x", sizeof ("+0x") - 1);
3581 names += sizeof ("+0x") - 1;
3582 bfd_sprintf_vma (abfd, names, p->addend);
3583 names += strlen (names);
3584 }
468392fb
AM		 3585 memcpy (names, "@plt", sizeof ("@plt"));
3586 names += sizeof ("@plt");
3587 s++;
b9e5796b
AM		 3588 if (abi < 2)
3589 {
3590 glink_vma += 8;
3591 if (i >= 0x8000)
3592 glink_vma += 4;
3593 }
3594 else
468392fb
AM		 3595 glink_vma += 4;
3596 }
3597 count += plt_count;
3598 }
90e3cdf2
JJ		 3599 }
3600
c9727e01 3601 done:
a7535cf3 3602 free (syms);
90e3cdf2
JJ		 3603 return count;
3604}
5bd4f169 3605\f
65f38f15
AM		 3606/* The following functions are specific to the ELF linker, while
3607 functions above are used generally. Those named ppc64_elf_* are
3608 called by the main ELF linker code. They appear in this file more
3609 or less in the order in which they are called. eg.
3610 ppc64_elf_check_relocs is called early in the link process,
3611 ppc64_elf_finish_dynamic_sections is one of the last functions
e86ce104
AM		 3612 called.
3613
3614 PowerPC64-ELF uses a similar scheme to PowerPC64-XCOFF in that
3615 functions have both a function code symbol and a function descriptor
3616 symbol. A call to foo in a relocatable object file looks like:
3617
3618 . .text
3619 . x:
3620 . bl .foo
3621 . nop
3622
3623 The function definition in another object file might be:
3624
3625 . .section .opd
3626 . foo: .quad .foo
3627 . .quad .TOC.@tocbase
3628 . .quad 0
3629 .
3630 . .text
3631 . .foo: blr
3632
3633 When the linker resolves the call during a static link, the branch
3634 unsurprisingly just goes to .foo and the .opd information is unused.
3635 If the function definition is in a shared library, things are a little
3636 different: The call goes via a plt call stub, the opd information gets
3637 copied to the plt, and the linker patches the nop.
3638
3639 . x:
3640 . bl .foo_stub
3641 . ld 2,40(1)
3642 .
3643 .
3644 . .foo_stub:
71a39c98
AM		 3645 . std 2,40(1) # in practice, the call stub
3646 . addis 11,2,Lfoo@toc@ha # is slightly optimized, but
3647 . addi 11,11,Lfoo@toc@l # this is the general idea
3648 . ld 12,0(11)
3649 . ld 2,8(11)
3650 . mtctr 12
3651 . ld 11,16(11)
e86ce104
AM		 3652 . bctr
3653 .
3654 . .section .plt
3655 . Lfoo: reloc (R_PPC64_JMP_SLOT, foo)
3656
3657 The "reloc ()" notation is supposed to indicate that the linker emits
3658 an R_PPC64_JMP_SLOT reloc against foo. The dynamic linker does the opd
3659 copying.
3660
3661 What are the difficulties here? Well, firstly, the relocations
3662 examined by the linker in check_relocs are against the function code
3663 sym .foo, while the dynamic relocation in the plt is emitted against
3664 the function descriptor symbol, foo. Somewhere along the line, we need
3665 to carefully copy dynamic link information from one symbol to the other.
3666 Secondly, the generic part of the elf linker will make .foo a dynamic
3667 symbol as is normal for most other backends. We need foo dynamic
3668 instead, at least for an application final link. However, when
3669 creating a shared library containing foo, we need to have both symbols
3670 dynamic so that references to .foo are satisfied during the early
3671 stages of linking. Otherwise the linker might decide to pull in a
8387904d
AM		 3672 definition from some other object, eg. a static library.
3673
3674 Update: As of August 2004, we support a new convention. Function
3675 calls may use the function descriptor symbol, ie. "bl foo". This
3676 behaves exactly as "bl .foo". */
65f38f15 3677
1d483afe 3678/* Of those relocs that might be copied as dynamic relocs, this function
58ac9f71
AM		 3679 selects those that must be copied when linking a shared library,
3680 even when the symbol is local. */
65f38f15 3681
1d483afe
AM		 3682static int
3683must_be_dyn_reloc (struct bfd_link_info *info,
3684 enum elf_ppc64_reloc_type r_type)
3685{
3686 switch (r_type)
3687 {
3688 default:
3689 return 1;
3690
3691 case R_PPC64_REL32:
3692 case R_PPC64_REL64:
3693 case R_PPC64_REL30:
3694 return 0;
3695
3696 case R_PPC64_TPREL16:
3697 case R_PPC64_TPREL16_LO:
3698 case R_PPC64_TPREL16_HI:
3699 case R_PPC64_TPREL16_HA:
3700 case R_PPC64_TPREL16_DS:
3701 case R_PPC64_TPREL16_LO_DS:
f9c6b907
AM		 3702 case R_PPC64_TPREL16_HIGH:
3703 case R_PPC64_TPREL16_HIGHA:
1d483afe
AM		 3704 case R_PPC64_TPREL16_HIGHER:
3705 case R_PPC64_TPREL16_HIGHERA:
3706 case R_PPC64_TPREL16_HIGHEST:
3707 case R_PPC64_TPREL16_HIGHESTA:
3708 case R_PPC64_TPREL64:
3709 return !info->executable;
3710 }
3711}
65f38f15 3712
f4656909
AM		 3713/* If ELIMINATE_COPY_RELOCS is non-zero, the linker will try to avoid
3714 copying dynamic variables from a shared lib into an app's dynbss
3715 section, and instead use a dynamic relocation to point into the
5d35169e
AM		 3716 shared lib. With code that gcc generates, it's vital that this be
3717 enabled; In the PowerPC64 ABI, the address of a function is actually
3718 the address of a function descriptor, which resides in the .opd
3719 section. gcc uses the descriptor directly rather than going via the
3720 GOT as some other ABI's do, which means that initialized function
3721 pointers must reference the descriptor. Thus, a function pointer
3722 initialized to the address of a function in a shared library will
3723 either require a copy reloc, or a dynamic reloc. Using a copy reloc
4cc11e76 3724 redefines the function descriptor symbol to point to the copy. This
5d35169e
AM		 3725 presents a problem as a plt entry for that function is also
3726 initialized from the function descriptor symbol and the copy reloc
3727 may not be initialized first. */
a23b6845 3728#define ELIMINATE_COPY_RELOCS 1
f4656909 3729
721956f4 3730/* Section name for stubs is the associated section name plus this
29942be8
NC		 3731 string. */
3732#define STUB_SUFFIX ".stub"
721956f4
AM		 3733
3734/* Linker stubs.
3735 ppc_stub_long_branch:
3736 Used when a 14 bit branch (or even a 24 bit branch) can't reach its
3737 destination, but a 24 bit branch in a stub section will reach.
3738 . b dest
3739
3740 ppc_stub_plt_branch:
3741 Similar to the above, but a 24 bit branch in the stub section won't
3742 reach its destination.
71a39c98
AM		 3743 . addis %r11,%r2,xxx@toc@ha
3744 . ld %r12,xxx@toc@l(%r11)
3745 . mtctr %r12
721956f4
AM		 3746 . bctr
3747
3748 ppc_stub_plt_call:
2c66dc6c
AM		 3749 Used to call a function in a shared library. If it so happens that
3750 the plt entry referenced crosses a 64k boundary, then an extra
71a39c98 3751 "addi %r11,%r11,xxx@toc@l" will be inserted before the "mtctr".
721956f4 3752 . std %r2,40(%r1)
71a39c98
AM		 3753 . addis %r11,%r2,xxx@toc@ha
3754 . ld %r12,xxx+0@toc@l(%r11)
3755 . mtctr %r12
3756 . ld %r2,xxx+8@toc@l(%r11)
3757 . ld %r11,xxx+16@toc@l(%r11)
721956f4 3758 . bctr
ad8e1ba5
AM		 3759
3760 ppc_stub_long_branch and ppc_stub_plt_branch may also have additional
3761 code to adjust the value and save r2 to support multiple toc sections.
3762 A ppc_stub_long_branch with an r2 offset looks like:
3763 . std %r2,40(%r1)
3764 . addis %r2,%r2,off@ha
3765 . addi %r2,%r2,off@l
3766 . b dest
3767
3768 A ppc_stub_plt_branch with an r2 offset looks like:
3769 . std %r2,40(%r1)
71a39c98
AM		 3770 . addis %r11,%r2,xxx@toc@ha
3771 . ld %r12,xxx@toc@l(%r11)
ad8e1ba5
AM		 3772 . addis %r2,%r2,off@ha
3773 . addi %r2,%r2,off@l
71a39c98 3774 . mtctr %r12
ad8e1ba5 3775 . bctr
ac2df442
AM		 3776
3777 In cases where the "addis" instruction would add zero, the "addis" is
3778 omitted and following instructions modified slightly in some cases.
721956f4
AM		 3779*/
3780
3781enum ppc_stub_type {
3782 ppc_stub_none,
3783 ppc_stub_long_branch,
ad8e1ba5 3784 ppc_stub_long_branch_r2off,
721956f4 3785 ppc_stub_plt_branch,
ad8e1ba5 3786 ppc_stub_plt_branch_r2off,
794e51c0 3787 ppc_stub_plt_call,
7341d5e2
AM		 3788 ppc_stub_plt_call_r2save,
3789 ppc_stub_global_entry
721956f4
AM		 3790};
3791
3792struct ppc_stub_hash_entry {
3793
3794 /* Base hash table entry structure. */
3795 struct bfd_hash_entry root;
3796
ad8e1ba5
AM		 3797 enum ppc_stub_type stub_type;
3798
721956f4
AM		 3799 /* The stub section. */
3800 asection *stub_sec;
3801
3802 /* Offset within stub_sec of the beginning of this stub. */
3803 bfd_vma stub_offset;
3804
3805 /* Given the symbol's value and its section we can determine its final
3806 value when building the stubs (so the stub knows where to jump. */
3807 bfd_vma target_value;
3808 asection *target_section;
3809
721956f4
AM		 3810 /* The symbol table entry, if any, that this was derived from. */
3811 struct ppc_link_hash_entry *h;
e054468f 3812 struct plt_entry *plt_ent;
721956f4
AM		 3813
3814 /* Where this stub is being called from, or, in the case of combined
3815 stub sections, the first input section in the group. */
3816 asection *id_sec;
6911b7dc
AM		 3817
3818 /* Symbol st_other. */
3819 unsigned char other;
721956f4
AM		 3820};
3821
3822struct ppc_branch_hash_entry {
3823
3824 /* Base hash table entry structure. */
3825 struct bfd_hash_entry root;
3826
c456f082 3827 /* Offset within branch lookup table. */
721956f4
AM		 3828 unsigned int offset;
3829
3830 /* Generation marker. */
3831 unsigned int iter;
3832};
65f38f15 3833
19e08130
AM		 3834/* Used to track dynamic relocations for local symbols. */
3835struct ppc_dyn_relocs
3836{
3837 struct ppc_dyn_relocs *next;
3838
3839 /* The input section of the reloc. */
3840 asection *sec;
3841
3842 /* Total number of relocs copied for the input section. */
3843 unsigned int count : 31;
3844
3845 /* Whether this entry is for STT_GNU_IFUNC symbols. */
3846 unsigned int ifunc : 1;
3847};
3848
65f38f15
AM		 3849struct ppc_link_hash_entry
3850{
3851 struct elf_link_hash_entry elf;
3852
b3fac117
AM		 3853 union {
3854 /* A pointer to the most recently used stub hash entry against this
3855 symbol. */
3856 struct ppc_stub_hash_entry *stub_cache;
3857
3858 /* A pointer to the next symbol starting with a '.' */
3859 struct ppc_link_hash_entry *next_dot_sym;
3860 } u;
721956f4 3861
65f38f15 3862 /* Track dynamic relocs copied for this symbol. */
6061a67d 3863 struct elf_dyn_relocs *dyn_relocs;
e86ce104 3864
721956f4 3865 /* Link between function code and descriptor symbols. */
34814b9f 3866 struct ppc_link_hash_entry *oh;
721956f4 3867
e86ce104
AM		 3868 /* Flag function code and descriptor symbols. */
3869 unsigned int is_func:1;
3870 unsigned int is_func_descriptor:1;
908b32fc 3871 unsigned int fake:1;
411e1bfb 3872
c5614fa4
AM		 3873 /* Whether global opd/toc sym has been adjusted or not.
3874 After ppc64_elf_edit_opd/ppc64_elf_edit_toc has run, this flag
3875 should be set for all globals defined in any opd/toc section. */
754021d0
AM		 3876 unsigned int adjust_done:1;
3877
99877b66
AM		 3878 /* Set if we twiddled this symbol to weak at some stage. */
3879 unsigned int was_undefined:1;
3880
411e1bfb 3881 /* Contexts in which symbol is used in the GOT (or TOC).
e7b938ca
AM		 3882 TLS_GD .. TLS_EXPLICIT bits are or'd into the mask as the
3883 corresponding relocs are encountered during check_relocs.
3884 tls_optimize clears TLS_GD .. TLS_TPREL when optimizing to
3885 indicate the corresponding GOT entry type is not needed.
3886 tls_optimize may also set TLS_TPRELGD when a GD reloc turns into
3887 a TPREL one. We use a separate flag rather than setting TPREL
3888 just for convenience in distinguishing the two cases. */
3889#define TLS_GD 1 /* GD reloc. */
3890#define TLS_LD 2 /* LD reloc. */
3891#define TLS_TPREL 4 /* TPREL reloc, => IE. */
3892#define TLS_DTPREL 8 /* DTPREL reloc, => LD. */
3893#define TLS_TLS 16 /* Any TLS reloc. */
3894#define TLS_EXPLICIT 32 /* Marks TOC section TLS relocs. */
3895#define TLS_TPRELGD 64 /* TPREL reloc resulting from GD->IE. */
e054468f 3896#define PLT_IFUNC 128 /* STT_GNU_IFUNC. */
f961d9dd 3897 unsigned char tls_mask;
65f38f15
AM		 3898};
3899
3900/* ppc64 ELF linker hash table. */
3901
3902struct ppc_link_hash_table
3903{
3904 struct elf_link_hash_table elf;
3905
721956f4
AM		 3906 /* The stub hash table. */
3907 struct bfd_hash_table stub_hash_table;
3908
3909 /* Another hash table for plt_branch stubs. */
3910 struct bfd_hash_table branch_hash_table;
3911
3b421ab3
AM		 3912 /* Hash table for function prologue tocsave. */
3913 htab_t tocsave_htab;
3914
e7d1c40c
AM		 3915 /* Various options and other info passed from the linker. */
3916 struct ppc64_elf_params *params;
721956f4
AM		 3917
3918 /* Array to keep track of which stub sections have been created, and
3919 information on stub grouping. */
3920 struct map_stub {
3921 /* This is the section to which stubs in the group will be attached. */
3922 asection *link_sec;
3923 /* The stub section. */
3924 asection *stub_sec;
ad8e1ba5
AM		 3925 /* Along with elf_gp, specifies the TOC pointer used in this group. */
3926 bfd_vma toc_off;
721956f4
AM		 3927 } *stub_group;
3928
ad8e1ba5
AM		 3929 /* Temp used when calculating TOC pointers. */
3930 bfd_vma toc_curr;
bf102f86
AM		 3931 bfd *toc_bfd;
3932 asection *toc_first_sec;
ad8e1ba5 3933
8f3bab57
AM		 3934 /* Highest input section id. */
3935 int top_id;
3936
734b6cf9
AM		 3937 /* Highest output section index. */
3938 int top_index;
3939
b3fac117
AM		 3940 /* Used when adding symbols. */
3941 struct ppc_link_hash_entry *dot_syms;
3942
734b6cf9
AM		 3943 /* List of input sections for each output section. */
3944 asection **input_list;
721956f4 3945
33e44f2e 3946 /* Shortcuts to get to dynamic linker sections. */
4ce794b7
AM		 3947 asection *dynbss;
3948 asection *relbss;
3949 asection *glink;
82bd7b59 3950 asection *sfpr;
4ce794b7
AM		 3951 asection *brlt;
3952 asection *relbrlt;
58d180e8 3953 asection *glink_eh_frame;
ec338859 3954
8387904d
AM		 3955 /* Shortcut to .__tls_get_addr and __tls_get_addr. */
3956 struct ppc_link_hash_entry *tls_get_addr;
3957 struct ppc_link_hash_entry *tls_get_addr_fd;
411e1bfb 3958
927be08e
AM		 3959 /* The size of reliplt used by got entry relocs. */
3960 bfd_size_type got_reli_size;
3961
9b5ecbd0 3962 /* Statistics. */
7341d5e2 3963 unsigned long stub_count[ppc_stub_global_entry];
9b5ecbd0 3964
ee75fd95
AM		 3965 /* Number of stubs against global syms. */
3966 unsigned long stub_globals;
3967
ee67d69a
AM		 3968 /* Set if we're linking code with function descriptors. */
3969 unsigned int opd_abi:1;
3970
4c52953f 3971 /* Support for multiple toc sections. */
33c0ec9d 3972 unsigned int do_multi_toc:1;
4c52953f 3973 unsigned int multi_toc_needed:1;
927be08e 3974 unsigned int second_toc_pass:1;
67f0cbdb 3975 unsigned int do_toc_opt:1;
4c52953f 3976
5d1634d7 3977 /* Set on error. */
99877b66 3978 unsigned int stub_error:1;
721956f4 3979
f6c7c3e8 3980 /* Temp used by ppc64_elf_before_check_relocs. */
99877b66 3981 unsigned int twiddled_syms:1;
721956f4
AM		 3982
3983 /* Incremented every time we size stubs. */
3984 unsigned int stub_iteration;
5d1634d7 3985
87d72d41
AM		 3986 /* Small local sym cache. */
3987 struct sym_cache sym_cache;
65f38f15
AM		 3988};
3989
4c52953f
AM		 3990/* Rename some of the generic section flags to better document how they
3991 are used here. */
b0dddeec
AM		 3992
3993/* Nonzero if this section has TLS related relocations. */
3994#define has_tls_reloc sec_flg0
3995
3996/* Nonzero if this section has a call to __tls_get_addr. */
3997#define has_tls_get_addr_call sec_flg1
3998
3999/* Nonzero if this section has any toc or got relocs. */
4000#define has_toc_reloc sec_flg2
4001
4002/* Nonzero if this section has a call to another section that uses
4003 the toc or got. */
d77c8a4b 4004#define makes_toc_func_call sec_flg3
b0dddeec
AM		 4005
4006/* Recursion protection when determining above flag. */
d77c8a4b 4007#define call_check_in_progress sec_flg4
70cc837d 4008#define call_check_done sec_flg5
4c52953f 4009
65f38f15
AM		 4010/* Get the ppc64 ELF linker hash table from a link_info structure. */
4011
4012#define ppc_hash_table(p) \
4dfe6ac6
NC		 4013 (elf_hash_table_id ((struct elf_link_hash_table *) ((p)->hash)) \
4014 == PPC64_ELF_DATA ? ((struct ppc_link_hash_table *) ((p)->hash)) : NULL)
65f38f15 4015
721956f4
AM		 4016#define ppc_stub_hash_lookup(table, string, create, copy) \
4017 ((struct ppc_stub_hash_entry *) \
4018 bfd_hash_lookup ((table), (string), (create), (copy)))
4019
4020#define ppc_branch_hash_lookup(table, string, create, copy) \
4021 ((struct ppc_branch_hash_entry *) \
4022 bfd_hash_lookup ((table), (string), (create), (copy)))
4023
4024/* Create an entry in the stub hash table. */
4025
4026static struct bfd_hash_entry *
4ce794b7
AM		 4027stub_hash_newfunc (struct bfd_hash_entry *entry,
4028 struct bfd_hash_table *table,
4029 const char *string)
721956f4
AM		 4030{
4031 /* Allocate the structure if it has not already been allocated by a
4032 subclass. */
4033 if (entry == NULL)
4034 {
4035 entry = bfd_hash_allocate (table, sizeof (struct ppc_stub_hash_entry));
4036 if (entry == NULL)
4037 return entry;
4038 }
4039
4040 /* Call the allocation method of the superclass. */
4041 entry = bfd_hash_newfunc (entry, table, string);
4042 if (entry != NULL)
4043 {
4044 struct ppc_stub_hash_entry *eh;
4045
4046 /* Initialize the local fields. */
4047 eh = (struct ppc_stub_hash_entry *) entry;
ad8e1ba5 4048 eh->stub_type = ppc_stub_none;
721956f4
AM		 4049 eh->stub_sec = NULL;
4050 eh->stub_offset = 0;
4051 eh->target_value = 0;
4052 eh->target_section = NULL;
721956f4 4053 eh->h = NULL;
6911b7dc 4054 eh->plt_ent = NULL;
721956f4 4055 eh->id_sec = NULL;
6911b7dc 4056 eh->other = 0;
721956f4
AM		 4057 }
4058
4059 return entry;
4060}
4061
4062/* Create an entry in the branch hash table. */
4063
4064static struct bfd_hash_entry *
4ce794b7
AM		 4065branch_hash_newfunc (struct bfd_hash_entry *entry,
4066 struct bfd_hash_table *table,
4067 const char *string)
721956f4
AM		 4068{
4069 /* Allocate the structure if it has not already been allocated by a
4070 subclass. */
4071 if (entry == NULL)
4072 {
4073 entry = bfd_hash_allocate (table, sizeof (struct ppc_branch_hash_entry));
4074 if (entry == NULL)
4075 return entry;
4076 }
4077
4078 /* Call the allocation method of the superclass. */
4079 entry = bfd_hash_newfunc (entry, table, string);
4080 if (entry != NULL)
4081 {
4082 struct ppc_branch_hash_entry *eh;
4083
4084 /* Initialize the local fields. */
4085 eh = (struct ppc_branch_hash_entry *) entry;
4086 eh->offset = 0;
4087 eh->iter = 0;
4088 }
4089
4090 return entry;
4091}
4092
65f38f15
AM		 4093/* Create an entry in a ppc64 ELF linker hash table. */
4094
4095static struct bfd_hash_entry *
4ce794b7
AM		 4096link_hash_newfunc (struct bfd_hash_entry *entry,
4097 struct bfd_hash_table *table,
4098 const char *string)
65f38f15
AM		 4099{
4100 /* Allocate the structure if it has not already been allocated by a
4101 subclass. */
4102 if (entry == NULL)
4103 {
4104 entry = bfd_hash_allocate (table, sizeof (struct ppc_link_hash_entry));
4105 if (entry == NULL)
4106 return entry;
4107 }
4108
4109 /* Call the allocation method of the superclass. */
4110 entry = _bfd_elf_link_hash_newfunc (entry, table, string);
4111 if (entry != NULL)
4112 {
4113 struct ppc_link_hash_entry *eh = (struct ppc_link_hash_entry *) entry;
4114
b3fac117 4115 memset (&eh->u.stub_cache, 0,
908b32fc 4116 (sizeof (struct ppc_link_hash_entry)
b3fac117
AM		 4117 - offsetof (struct ppc_link_hash_entry, u.stub_cache)));
4118
4119 /* When making function calls, old ABI code references function entry
4120 points (dot symbols), while new ABI code references the function
4121 descriptor symbol. We need to make any combination of reference and
4122 definition work together, without breaking archive linking.
4123
4124 For a defined function "foo" and an undefined call to "bar":
4125 An old object defines "foo" and ".foo", references ".bar" (possibly
4126 "bar" too).
4127 A new object defines "foo" and references "bar".
4128
4129 A new object thus has no problem with its undefined symbols being
4130 satisfied by definitions in an old object. On the other hand, the
4131 old object won't have ".bar" satisfied by a new object.
4132
4133 Keep a list of newly added dot-symbols. */
4134
4135 if (string[0] == '.')
4136 {
4137 struct ppc_link_hash_table *htab;
4138
4139 htab = (struct ppc_link_hash_table *) table;
4140 eh->u.next_dot_sym = htab->dot_syms;
4141 htab->dot_syms = eh;
4142 }
65f38f15
AM		 4143 }
4144
4145 return entry;
4146}
4147
3b421ab3
AM		 4148struct tocsave_entry {
4149 asection *sec;
4150 bfd_vma offset;
4151};
4152
4153static hashval_t
4154tocsave_htab_hash (const void *p)
4155{
4156 const struct tocsave_entry *e = (const struct tocsave_entry *) p;
4157 return ((bfd_vma)(intptr_t) e->sec ^ e->offset) >> 3;
4158}
4159
4160static int
4161tocsave_htab_eq (const void *p1, const void *p2)
4162{
4163 const struct tocsave_entry *e1 = (const struct tocsave_entry *) p1;
4164 const struct tocsave_entry *e2 = (const struct tocsave_entry *) p2;
4165 return e1->sec == e2->sec && e1->offset == e2->offset;
4166}
4167
68faa637
AM		 4168/* Destroy a ppc64 ELF linker hash table. */
4169
4170static void
d495ab0d 4171ppc64_elf_link_hash_table_free (bfd *obfd)
68faa637 4172{
d495ab0d 4173 struct ppc_link_hash_table *htab;
68faa637 4174
d495ab0d 4175 htab = (struct ppc_link_hash_table *) obfd->link.hash;
68faa637
AM		 4176 if (htab->tocsave_htab)
4177 htab_delete (htab->tocsave_htab);
d495ab0d
AM		 4178 bfd_hash_table_free (&htab->branch_hash_table);
4179 bfd_hash_table_free (&htab->stub_hash_table);
4180 _bfd_elf_link_hash_table_free (obfd);
68faa637
AM		 4181}
4182
65f38f15
AM		 4183/* Create a ppc64 ELF linker hash table. */
4184
4185static struct bfd_link_hash_table *
4ce794b7 4186ppc64_elf_link_hash_table_create (bfd *abfd)
65f38f15
AM		 4187{
4188 struct ppc_link_hash_table *htab;
4189 bfd_size_type amt = sizeof (struct ppc_link_hash_table);
4190
4ce794b7 4191 htab = bfd_zmalloc (amt);
65f38f15
AM		 4192 if (htab == NULL)
4193 return NULL;
4194
66eb6687 4195 if (!_bfd_elf_link_hash_table_init (&htab->elf, abfd, link_hash_newfunc,
4dfe6ac6
NC		 4196 sizeof (struct ppc_link_hash_entry),
4197 PPC64_ELF_DATA))
65f38f15 4198 {
e2d34d7d 4199 free (htab);
65f38f15
AM		 4200 return NULL;
4201 }
4202
721956f4 4203 /* Init the stub hash table too. */
66eb6687
AM		 4204 if (!bfd_hash_table_init (&htab->stub_hash_table, stub_hash_newfunc,
4205 sizeof (struct ppc_stub_hash_entry)))
2915c55b 4206 {
d495ab0d 4207 _bfd_elf_link_hash_table_free (abfd);
2915c55b
JK		 4208 return NULL;
4209 }
721956f4
AM		 4210
4211 /* And the branch hash table. */
66eb6687
AM		 4212 if (!bfd_hash_table_init (&htab->branch_hash_table, branch_hash_newfunc,
4213 sizeof (struct ppc_branch_hash_entry)))
2915c55b
JK		 4214 {
4215 bfd_hash_table_free (&htab->stub_hash_table);
d495ab0d 4216 _bfd_elf_link_hash_table_free (abfd);
2915c55b
JK		 4217 return NULL;
4218 }
721956f4 4219
3b421ab3
AM		 4220 htab->tocsave_htab = htab_try_create (1024,
4221 tocsave_htab_hash,
4222 tocsave_htab_eq,
4223 NULL);
4224 if (htab->tocsave_htab == NULL)
2915c55b 4225 {
d495ab0d 4226 ppc64_elf_link_hash_table_free (abfd);
2915c55b
JK		 4227 return NULL;
4228 }
d495ab0d 4229 htab->elf.root.hash_table_free = ppc64_elf_link_hash_table_free;
3b421ab3 4230
3254fd24
AM		 4231 /* Initializing two fields of the union is just cosmetic. We really
4232 only care about glist, but when compiled on a 32-bit host the
4233 bfd_vma fields are larger. Setting the bfd_vma to zero makes
4234 debugger inspection of these fields look nicer. */
a6aa5195
AM		 4235 htab->elf.init_got_refcount.refcount = 0;
4236 htab->elf.init_got_refcount.glist = NULL;
4237 htab->elf.init_plt_refcount.refcount = 0;
4238 htab->elf.init_plt_refcount.glist = NULL;
4239 htab->elf.init_got_offset.offset = 0;
4240 htab->elf.init_got_offset.glist = NULL;
4241 htab->elf.init_plt_offset.offset = 0;
4242 htab->elf.init_plt_offset.glist = NULL;
3254fd24 4243
65f38f15
AM		 4244 return &htab->elf.root;
4245}
4246
bfeb4a28
AM		 4247/* Create sections for linker generated code. */
4248
4249static bfd_boolean
4250create_linkage_sections (bfd *dynobj, struct bfd_link_info *info)
4251{
4252 struct ppc_link_hash_table *htab;
4253 flagword flags;
4254
4255 htab = ppc_hash_table (info);
4256
4257 /* Create .sfpr for code to save and restore fp regs. */
4258 flags = (SEC_ALLOC | SEC_LOAD | SEC_CODE | SEC_READONLY
4259 | SEC_HAS_CONTENTS | SEC_IN_MEMORY | SEC_LINKER_CREATED);
4260 htab->sfpr = bfd_make_section_anyway_with_flags (dynobj, ".sfpr",
4261 flags);
4262 if (htab->sfpr == NULL
4263 || ! bfd_set_section_alignment (dynobj, htab->sfpr, 2))
4264 return FALSE;
4265
4266 /* Create .glink for lazy dynamic linking support. */
4267 htab->glink = bfd_make_section_anyway_with_flags (dynobj, ".glink",
4268 flags);
4269 if (htab->glink == NULL
4270 || ! bfd_set_section_alignment (dynobj, htab->glink, 3))
4271 return FALSE;
4272
4273 if (!info->no_ld_generated_unwind_info)
4274 {
4275 flags = (SEC_ALLOC | SEC_LOAD | SEC_READONLY | SEC_HAS_CONTENTS
4276 | SEC_IN_MEMORY | SEC_LINKER_CREATED);
4277 htab->glink_eh_frame = bfd_make_section_anyway_with_flags (dynobj,
4278 ".eh_frame",
4279 flags);
4280 if (htab->glink_eh_frame == NULL
4281 || !bfd_set_section_alignment (dynobj, htab->glink_eh_frame, 2))
4282 return FALSE;
4283 }
4284
4285 flags = SEC_ALLOC | SEC_LINKER_CREATED;
33e44f2e
AM		 4286 htab->elf.iplt = bfd_make_section_anyway_with_flags (dynobj, ".iplt", flags);
4287 if (htab->elf.iplt == NULL
4288 || ! bfd_set_section_alignment (dynobj, htab->elf.iplt, 3))
bfeb4a28
AM		 4289 return FALSE;
4290
4291 flags = (SEC_ALLOC | SEC_LOAD | SEC_READONLY
4292 | SEC_HAS_CONTENTS | SEC_IN_MEMORY | SEC_LINKER_CREATED);
33e44f2e
AM		 4293 htab->elf.irelplt
4294 = bfd_make_section_anyway_with_flags (dynobj, ".rela.iplt", flags);
4295 if (htab->elf.irelplt == NULL
4296 || ! bfd_set_section_alignment (dynobj, htab->elf.irelplt, 3))
bfeb4a28
AM		 4297 return FALSE;
4298
4299 /* Create branch lookup table for plt_branch stubs. */
4300 flags = (SEC_ALLOC | SEC_LOAD
4301 | SEC_HAS_CONTENTS | SEC_IN_MEMORY | SEC_LINKER_CREATED);
4302 htab->brlt = bfd_make_section_anyway_with_flags (dynobj, ".branch_lt",
4303 flags);
4304 if (htab->brlt == NULL
4305 || ! bfd_set_section_alignment (dynobj, htab->brlt, 3))
4306 return FALSE;
4307
4308 if (!info->shared)
4309 return TRUE;
4310
4311 flags = (SEC_ALLOC | SEC_LOAD | SEC_READONLY
4312 | SEC_HAS_CONTENTS | SEC_IN_MEMORY | SEC_LINKER_CREATED);
4313 htab->relbrlt = bfd_make_section_anyway_with_flags (dynobj,
4314 ".rela.branch_lt",
4315 flags);
4316 if (htab->relbrlt == NULL
4317 || ! bfd_set_section_alignment (dynobj, htab->relbrlt, 3))
4318 return FALSE;
4319
4320 return TRUE;
4321}
4322
e717da7e
AM		 4323/* Satisfy the ELF linker by filling in some fields in our fake bfd. */
4324
bfeb4a28 4325bfd_boolean
e7d1c40c
AM		 4326ppc64_elf_init_stub_bfd (struct bfd_link_info *info,
4327 struct ppc64_elf_params *params)
e717da7e
AM		 4328{
4329 struct ppc_link_hash_table *htab;
4330
e7d1c40c 4331 elf_elfheader (params->stub_bfd)->e_ident[EI_CLASS] = ELFCLASS64;
e717da7e
AM		 4332
4333/* Always hook our dynamic sections into the first bfd, which is the
4334 linker created stub bfd. This ensures that the GOT header is at
4335 the start of the output TOC section. */
4336 htab = ppc_hash_table (info);
4dfe6ac6 4337 if (htab == NULL)
bfeb4a28 4338 return FALSE;
e7d1c40c
AM		 4339 htab->elf.dynobj = params->stub_bfd;
4340 htab->params = params;
bfeb4a28
AM		 4341
4342 if (info->relocatable)
4343 return TRUE;
4344
4345 return create_linkage_sections (htab->elf.dynobj, info);
e717da7e
AM		 4346}
4347
721956f4
AM		 4348/* Build a name for an entry in the stub hash table. */
4349
4350static char *
4ce794b7
AM		 4351ppc_stub_name (const asection *input_section,
4352 const asection *sym_sec,
4353 const struct ppc_link_hash_entry *h,
4354 const Elf_Internal_Rela *rel)
721956f4
AM		 4355{
4356 char *stub_name;
bcaa2f82 4357 ssize_t len;
721956f4
AM		 4358
4359 /* rel->r_addend is actually 64 bit, but who uses more than +/- 2^31
4360 offsets from a sym as a branch target? In fact, we could
4361 probably assume the addend is always zero. */
4362 BFD_ASSERT (((int) rel->r_addend & 0xffffffff) == rel->r_addend);
4363
4364 if (h)
4365 {
4366 len = 8 + 1 + strlen (h->elf.root.root.string) + 1 + 8 + 1;
4367 stub_name = bfd_malloc (len);
46de2a7c
AM		 4368 if (stub_name == NULL)
4369 return stub_name;
4370
bcaa2f82
AM		 4371 len = sprintf (stub_name, "%08x.%s+%x",
4372 input_section->id & 0xffffffff,
4373 h->elf.root.root.string,
4374 (int) rel->r_addend & 0xffffffff);
721956f4
AM		 4375 }
4376 else
4377 {
ad8e1ba5 4378 len = 8 + 1 + 8 + 1 + 8 + 1 + 8 + 1;
721956f4 4379 stub_name = bfd_malloc (len);
46de2a7c
AM		 4380 if (stub_name == NULL)
4381 return stub_name;
4382
bcaa2f82
AM		 4383 len = sprintf (stub_name, "%08x.%x:%x+%x",
4384 input_section->id & 0xffffffff,
4385 sym_sec->id & 0xffffffff,
4386 (int) ELF64_R_SYM (rel->r_info) & 0xffffffff,
4387 (int) rel->r_addend & 0xffffffff);
721956f4 4388 }
bcaa2f82 4389 if (len > 2 && stub_name[len - 2] == '+' && stub_name[len - 1] == '0')
ee75fd95 4390 stub_name[len - 2] = 0;
721956f4
AM		 4391 return stub_name;
4392}
4393
4394/* Look up an entry in the stub hash. Stub entries are cached because
4395 creating the stub name takes a bit of time. */
4396
4397static struct ppc_stub_hash_entry *
4ce794b7
AM		 4398ppc_get_stub_entry (const asection *input_section,
4399 const asection *sym_sec,
039b3fef 4400 struct ppc_link_hash_entry *h,
4ce794b7
AM		 4401 const Elf_Internal_Rela *rel,
4402 struct ppc_link_hash_table *htab)
721956f4
AM		 4403{
4404 struct ppc_stub_hash_entry *stub_entry;
721956f4
AM		 4405 const asection *id_sec;
4406
4407 /* If this input section is part of a group of sections sharing one
4408 stub section, then use the id of the first section in the group.
4409 Stub names need to include a section id, as there may well be
4410 more than one stub used to reach say, printf, and we need to
4411 distinguish between them. */
4412 id_sec = htab->stub_group[input_section->id].link_sec;
4413
b3fac117
AM		 4414 if (h != NULL && h->u.stub_cache != NULL
4415 && h->u.stub_cache->h == h
4416 && h->u.stub_cache->id_sec == id_sec)
721956f4 4417 {
b3fac117 4418 stub_entry = h->u.stub_cache;
721956f4
AM		 4419 }
4420 else
4421 {
4422 char *stub_name;
4423
4424 stub_name = ppc_stub_name (id_sec, sym_sec, h, rel);
4425 if (stub_name == NULL)
4426 return NULL;
4427
4428 stub_entry = ppc_stub_hash_lookup (&htab->stub_hash_table,
b34976b6 4429 stub_name, FALSE, FALSE);
721956f4 4430 if (h != NULL)
b3fac117 4431 h->u.stub_cache = stub_entry;
721956f4
AM		 4432
4433 free (stub_name);
4434 }
4435
4436 return stub_entry;
4437}
4438
4439/* Add a new stub entry to the stub hash. Not all fields of the new
4440 stub entry are initialised. */
4441
4442static struct ppc_stub_hash_entry *
4ce794b7
AM		 4443ppc_add_stub (const char *stub_name,
4444 asection *section,
25f53a85 4445 struct bfd_link_info *info)
721956f4 4446{
25f53a85 4447 struct ppc_link_hash_table *htab = ppc_hash_table (info);
721956f4
AM		 4448 asection *link_sec;
4449 asection *stub_sec;
4450 struct ppc_stub_hash_entry *stub_entry;
4451
4452 link_sec = htab->stub_group[section->id].link_sec;
4453 stub_sec = htab->stub_group[section->id].stub_sec;
4454 if (stub_sec == NULL)
4455 {
4456 stub_sec = htab->stub_group[link_sec->id].stub_sec;
4457 if (stub_sec == NULL)
4458 {
d4c88bbb 4459 size_t namelen;
721956f4
AM		 4460 bfd_size_type len;
4461 char *s_name;
4462
d4c88bbb
AM		 4463 namelen = strlen (link_sec->name);
4464 len = namelen + sizeof (STUB_SUFFIX);
e7d1c40c 4465 s_name = bfd_alloc (htab->params->stub_bfd, len);
721956f4
AM		 4466 if (s_name == NULL)
4467 return NULL;
4468
d4c88bbb
AM		 4469 memcpy (s_name, link_sec->name, namelen);
4470 memcpy (s_name + namelen, STUB_SUFFIX, sizeof (STUB_SUFFIX));
e7d1c40c 4471 stub_sec = (*htab->params->add_stub_section) (s_name, link_sec);
721956f4
AM		 4472 if (stub_sec == NULL)
4473 return NULL;
4474 htab->stub_group[link_sec->id].stub_sec = stub_sec;
4475 }
4476 htab->stub_group[section->id].stub_sec = stub_sec;
4477 }
4478
4479 /* Enter this entry into the linker stub hash table. */
4480 stub_entry = ppc_stub_hash_lookup (&htab->stub_hash_table, stub_name,
b34976b6 4481 TRUE, FALSE);
721956f4
AM		 4482 if (stub_entry == NULL)
4483 {
8de848d8 4484 info->callbacks->einfo (_("%P: %B: cannot create stub entry %s\n"),
25f53a85 4485 section->owner, stub_name);
721956f4
AM		 4486 return NULL;
4487 }
4488
4489 stub_entry->stub_sec = stub_sec;
4490 stub_entry->stub_offset = 0;
4491 stub_entry->id_sec = link_sec;
4492 return stub_entry;
4493}
4494
e717da7e
AM		 4495/* Create .got and .rela.got sections in ABFD, and .got in dynobj if
4496 not already done. */
65f38f15 4497
b34976b6 4498static bfd_boolean
e717da7e 4499create_got_section (bfd *abfd, struct bfd_link_info *info)
65f38f15 4500{
e717da7e
AM		 4501 asection *got, *relgot;
4502 flagword flags;
4503 struct ppc_link_hash_table *htab = ppc_hash_table (info);
65f38f15 4504
0c8d6e5c 4505 if (!is_ppc64_elf (abfd))
0ffa91dd 4506 return FALSE;
4dfe6ac6
NC		 4507 if (htab == NULL)
4508 return FALSE;
0ffa91dd 4509
33e44f2e
AM		 4510 if (!htab->elf.sgot
4511 && !_bfd_elf_create_got_section (htab->elf.dynobj, info))
4512 return FALSE;
e717da7e
AM		 4513
4514 flags = (SEC_ALLOC | SEC_LOAD | SEC_HAS_CONTENTS | SEC_IN_MEMORY
4515 | SEC_LINKER_CREATED);
4516
c456f082 4517 got = bfd_make_section_anyway_with_flags (abfd, ".got", flags);
e717da7e 4518 if (!got
e717da7e
AM		 4519 || !bfd_set_section_alignment (abfd, got, 3))
4520 return FALSE;
65f38f15 4521
c456f082
AM		 4522 relgot = bfd_make_section_anyway_with_flags (abfd, ".rela.got",
4523 flags | SEC_READONLY);
e717da7e 4524 if (!relgot
e717da7e 4525 || ! bfd_set_section_alignment (abfd, relgot, 3))
b34976b6 4526 return FALSE;
e717da7e
AM		 4527
4528 ppc64_elf_tdata (abfd)->got = got;
4529 ppc64_elf_tdata (abfd)->relgot = relgot;
b34976b6 4530 return TRUE;
65f38f15 4531}
5bd4f169 4532
82bd7b59 4533/* Create the dynamic sections, and set up shortcuts. */
5bd4f169 4534
b34976b6 4535static bfd_boolean
4ce794b7 4536ppc64_elf_create_dynamic_sections (bfd *dynobj, struct bfd_link_info *info)
5bd4f169 4537{
65f38f15 4538 struct ppc_link_hash_table *htab;
5bd4f169 4539
65f38f15 4540 if (!_bfd_elf_create_dynamic_sections (dynobj, info))
b34976b6 4541 return FALSE;
65f38f15 4542
e717da7e 4543 htab = ppc_hash_table (info);
4dfe6ac6
NC		 4544 if (htab == NULL)
4545 return FALSE;
4546
3d4d4302 4547 htab->dynbss = bfd_get_linker_section (dynobj, ".dynbss");
65f38f15 4548 if (!info->shared)
3d4d4302 4549 htab->relbss = bfd_get_linker_section (dynobj, ".rela.bss");
65f38f15 4550
33e44f2e 4551 if (!htab->elf.sgot || !htab->elf.splt || !htab->elf.srelplt || !htab->dynbss
4ce794b7 4552 || (!info->shared && !htab->relbss))
65f38f15
AM		 4553 abort ();
4554
b34976b6 4555 return TRUE;
5bd4f169
AM		 4556}
4557
b31867b6
AM		 4558/* Follow indirect and warning symbol links. */
4559
4560static inline struct bfd_link_hash_entry *
4561follow_link (struct bfd_link_hash_entry *h)
4562{
4563 while (h->type == bfd_link_hash_indirect
4564 || h->type == bfd_link_hash_warning)
4565 h = h->u.i.link;
4566 return h;
4567}
4568
4569static inline struct elf_link_hash_entry *
4570elf_follow_link (struct elf_link_hash_entry *h)
4571{
4572 return (struct elf_link_hash_entry *) follow_link (&h->root);
4573}
4574
4575static inline struct ppc_link_hash_entry *
4576ppc_follow_link (struct ppc_link_hash_entry *h)
4577{
4578 return (struct ppc_link_hash_entry *) follow_link (&h->elf.root);
4579}
4580
40d16e0b
AM		 4581/* Merge PLT info on FROM with that on TO. */
4582
4583static void
4584move_plt_plist (struct ppc_link_hash_entry *from,
4585 struct ppc_link_hash_entry *to)
4586{
4587 if (from->elf.plt.plist != NULL)
4588 {
4589 if (to->elf.plt.plist != NULL)
4590 {
4591 struct plt_entry **entp;
4592 struct plt_entry *ent;
4593
4594 for (entp = &from->elf.plt.plist; (ent = *entp) != NULL; )
4595 {
4596 struct plt_entry *dent;
4597
4598 for (dent = to->elf.plt.plist; dent != NULL; dent = dent->next)
4599 if (dent->addend == ent->addend)
4600 {
4601 dent->plt.refcount += ent->plt.refcount;
4602 *entp = ent->next;
4603 break;
4604 }
4605 if (dent == NULL)
4606 entp = &ent->next;
4607 }
4608 *entp = to->elf.plt.plist;
4609 }
4610
4611 to->elf.plt.plist = from->elf.plt.plist;
4612 from->elf.plt.plist = NULL;
4613 }
4614}
4615
65f38f15
AM		 4616/* Copy the extra info we tack onto an elf_link_hash_entry. */
4617
4618static void
fcfa13d2
AM		 4619ppc64_elf_copy_indirect_symbol (struct bfd_link_info *info,
4620 struct elf_link_hash_entry *dir,
4621 struct elf_link_hash_entry *ind)
65f38f15
AM		 4622{
4623 struct ppc_link_hash_entry *edir, *eind;
4624
4625 edir = (struct ppc_link_hash_entry *) dir;
4626 eind = (struct ppc_link_hash_entry *) ind;
4627
c79d6685
AM		 4628 edir->is_func |= eind->is_func;
4629 edir->is_func_descriptor |= eind->is_func_descriptor;
4630 edir->tls_mask |= eind->tls_mask;
4631 if (eind->oh != NULL)
4632 edir->oh = ppc_follow_link (eind->oh);
4633
4634 /* If called to transfer flags for a weakdef during processing
4635 of elf_adjust_dynamic_symbol, don't copy NON_GOT_REF.
4636 We clear it ourselves for ELIMINATE_COPY_RELOCS. */
4637 if (!(ELIMINATE_COPY_RELOCS
4638 && eind->elf.root.type != bfd_link_hash_indirect
4639 && edir->elf.dynamic_adjusted))
4640 edir->elf.non_got_ref |= eind->elf.non_got_ref;
4641
4642 edir->elf.ref_dynamic |= eind->elf.ref_dynamic;
4643 edir->elf.ref_regular |= eind->elf.ref_regular;
4644 edir->elf.ref_regular_nonweak |= eind->elf.ref_regular_nonweak;
4645 edir->elf.needs_plt |= eind->elf.needs_plt;
a345bc8d 4646 edir->elf.pointer_equality_needed |= eind->elf.pointer_equality_needed;
c79d6685 4647
411e1bfb 4648 /* Copy over any dynamic relocs we may have on the indirect sym. */
bbd7ec4a 4649 if (eind->dyn_relocs != NULL)
65f38f15 4650 {
bbd7ec4a
AM		 4651 if (edir->dyn_relocs != NULL)
4652 {
6061a67d
AM		 4653 struct elf_dyn_relocs **pp;
4654 struct elf_dyn_relocs *p;
bbd7ec4a 4655
fcfa13d2 4656 /* Add reloc counts against the indirect sym to the direct sym
bbd7ec4a
AM		 4657 list. Merge any entries against the same section. */
4658 for (pp = &eind->dyn_relocs; (p = *pp) != NULL; )
4659 {
6061a67d 4660 struct elf_dyn_relocs *q;
bbd7ec4a
AM		 4661
4662 for (q = edir->dyn_relocs; q != NULL; q = q->next)
4663 if (q->sec == p->sec)
4664 {
4665 q->pc_count += p->pc_count;
4666 q->count += p->count;
4667 *pp = p->next;
4668 break;
4669 }
4670 if (q == NULL)
4671 pp = &p->next;
4672 }
4673 *pp = edir->dyn_relocs;
4674 }
4675
65f38f15
AM		 4676 edir->dyn_relocs = eind->dyn_relocs;
4677 eind->dyn_relocs = NULL;
4678 }
65f38f15 4679
68ba6d40
AM		 4680 /* If we were called to copy over info for a weak sym, that's all.
4681 You might think dyn_relocs need not be copied over; After all,
4682 both syms will be dynamic or both non-dynamic so we're just
68ffbac6 4683 moving reloc accounting around. However, ELIMINATE_COPY_RELOCS
68ba6d40
AM		 4684 code in ppc64_elf_adjust_dynamic_symbol needs to check for
4685 dyn_relocs in read-only sections, and it does so on what is the
4686 DIR sym here. */
4687 if (eind->elf.root.type != bfd_link_hash_indirect)
4688 return;
4689
81848ca0
AM		 4690 /* Copy over got entries that we may have already seen to the
4691 symbol which just became indirect. */
411e1bfb
AM		 4692 if (eind->elf.got.glist != NULL)
4693 {
4694 if (edir->elf.got.glist != NULL)
4695 {
4696 struct got_entry **entp;
4697 struct got_entry *ent;
4698
4699 for (entp = &eind->elf.got.glist; (ent = *entp) != NULL; )
4700 {
4701 struct got_entry *dent;
4702
4703 for (dent = edir->elf.got.glist; dent != NULL; dent = dent->next)
4704 if (dent->addend == ent->addend
e717da7e 4705 && dent->owner == ent->owner
411e1bfb
AM		 4706 && dent->tls_type == ent->tls_type)
4707 {
4708 dent->got.refcount += ent->got.refcount;
4709 *entp = ent->next;
4710 break;
4711 }
4712 if (dent == NULL)
4713 entp = &ent->next;
4714 }
4715 *entp = edir->elf.got.glist;
4716 }
4717
4718 edir->elf.got.glist = eind->elf.got.glist;
4719 eind->elf.got.glist = NULL;
4720 }
4721
4722 /* And plt entries. */
40d16e0b 4723 move_plt_plist (eind, edir);
411e1bfb 4724
fcfa13d2 4725 if (eind->elf.dynindx != -1)
411e1bfb 4726 {
fcfa13d2
AM		 4727 if (edir->elf.dynindx != -1)
4728 _bfd_elf_strtab_delref (elf_hash_table (info)->dynstr,
4729 edir->elf.dynstr_index);
411e1bfb
AM		 4730 edir->elf.dynindx = eind->elf.dynindx;
4731 edir->elf.dynstr_index = eind->elf.dynstr_index;
4732 eind->elf.dynindx = -1;
4733 eind->elf.dynstr_index = 0;
4734 }
411e1bfb
AM		 4735}
4736
8387904d
AM		 4737/* Find the function descriptor hash entry from the given function code
4738 hash entry FH. Link the entries via their OH fields. */
4739
4740static struct ppc_link_hash_entry *
b31867b6 4741lookup_fdh (struct ppc_link_hash_entry *fh, struct ppc_link_hash_table *htab)
8387904d
AM		 4742{
4743 struct ppc_link_hash_entry *fdh = fh->oh;
4744
4745 if (fdh == NULL)
4746 {
4747 const char *fd_name = fh->elf.root.root.string + 1;
4748
4749 fdh = (struct ppc_link_hash_entry *)
4750 elf_link_hash_lookup (&htab->elf, fd_name, FALSE, FALSE, FALSE);
b31867b6
AM		 4751 if (fdh == NULL)
4752 return fdh;
4753
4754 fdh->is_func_descriptor = 1;
4755 fdh->oh = fh;
4756 fh->is_func = 1;
4757 fh->oh = fdh;
8387904d
AM		 4758 }
4759
b31867b6 4760 return ppc_follow_link (fdh);
8387904d
AM		 4761}
4762
bb700d78
AM		 4763/* Make a fake function descriptor sym for the code sym FH. */
4764
4765static struct ppc_link_hash_entry *
4766make_fdh (struct bfd_link_info *info,
908b32fc 4767 struct ppc_link_hash_entry *fh)
bb700d78
AM		 4768{
4769 bfd *abfd;
4770 asymbol *newsym;
4771 struct bfd_link_hash_entry *bh;
4772 struct ppc_link_hash_entry *fdh;
4773
4774 abfd = fh->elf.root.u.undef.abfd;
4775 newsym = bfd_make_empty_symbol (abfd);
4776 newsym->name = fh->elf.root.root.string + 1;
4777 newsym->section = bfd_und_section_ptr;
4778 newsym->value = 0;
908b32fc 4779 newsym->flags = BSF_WEAK;
bb700d78
AM		 4780
4781 bh = NULL;
4782 if (!_bfd_generic_link_add_one_symbol (info, abfd, newsym->name,
4783 newsym->flags, newsym->section,
4784 newsym->value, NULL, FALSE, FALSE,
4785 &bh))
4786 return NULL;
4787
4788 fdh = (struct ppc_link_hash_entry *) bh;
4789 fdh->elf.non_elf = 0;
908b32fc
AM		 4790 fdh->fake = 1;
4791 fdh->is_func_descriptor = 1;
4792 fdh->oh = fh;
4793 fh->is_func = 1;
4794 fh->oh = fdh;
bb700d78
AM		 4795 return fdh;
4796}
4797
8387904d
AM		 4798/* Fix function descriptor symbols defined in .opd sections to be
4799 function type. */
555cd476
AM		 4800
4801static bfd_boolean
c16153ae 4802ppc64_elf_add_symbol_hook (bfd *ibfd,
e054468f 4803 struct bfd_link_info *info,
555cd476 4804 Elf_Internal_Sym *isym,
6911b7dc 4805 const char **name,
555cd476
AM		 4806 flagword *flags ATTRIBUTE_UNUSED,
4807 asection **sec,
4808 bfd_vma *value ATTRIBUTE_UNUSED)
4809{
f64b2e8d
NC		 4810 if ((ibfd->flags & DYNAMIC) == 0
4811 && ELF_ST_BIND (isym->st_info) == STB_GNU_UNIQUE)
4812 elf_tdata (info->output_bfd)->has_gnu_symbols = TRUE;
4813
e054468f 4814 if (ELF_ST_TYPE (isym->st_info) == STT_GNU_IFUNC)
c16153ae
L		 4815 {
4816 if ((ibfd->flags & DYNAMIC) == 0)
f64b2e8d 4817 elf_tdata (info->output_bfd)->has_gnu_symbols = TRUE;
c16153ae 4818 }
e054468f
AM		 4819 else if (ELF_ST_TYPE (isym->st_info) == STT_FUNC)
4820 ;
4821 else if (*sec != NULL
70cc837d 4822 && strcmp ((*sec)->name, ".opd") == 0)
555cd476 4823 isym->st_info = ELF_ST_INFO (ELF_ST_BIND (isym->st_info), STT_FUNC);
433817dd 4824
6911b7dc
AM		 4825 if ((STO_PPC64_LOCAL_MASK & isym->st_other) != 0)
4826 {
4827 if (abiversion (ibfd) == 0)
4828 set_abiversion (ibfd, 2);
4829 else if (abiversion (ibfd) == 1)
4830 {
4831 info->callbacks->einfo (_("%P: symbol '%s' has invalid st_other"
4832 " for ABI version 1\n"), name);
4833 bfd_set_error (bfd_error_bad_value);
4834 return FALSE;
4835 }
4836 }
4837
555cd476
AM		 4838 return TRUE;
4839}
4840
6911b7dc
AM		 4841/* Merge non-visibility st_other attributes: local entry point. */
4842
4843static void
4844ppc64_elf_merge_symbol_attribute (struct elf_link_hash_entry *h,
4845 const Elf_Internal_Sym *isym,
4846 bfd_boolean definition,
4847 bfd_boolean dynamic)
4848{
4849 if (definition && !dynamic)
4850 h->other = ((isym->st_other & ~ELF_ST_VISIBILITY (-1))
4851 | ELF_ST_VISIBILITY (h->other));
4852}
4853
8387904d 4854/* This function makes an old ABI object reference to ".bar" cause the
908b32fc
AM		 4855 inclusion of a new ABI object archive that defines "bar".
4856 NAME is a symbol defined in an archive. Return a symbol in the hash
4857 table that might be satisfied by the archive symbols. */
8387904d
AM		 4858
4859static struct elf_link_hash_entry *
4860ppc64_elf_archive_symbol_lookup (bfd *abfd,
4861 struct bfd_link_info *info,
4862 const char *name)
4863{
4864 struct elf_link_hash_entry *h;
4865 char *dot_name;
4866 size_t len;
4867
4868 h = _bfd_elf_archive_symbol_lookup (abfd, info, name);
908b32fc
AM		 4869 if (h != NULL
4870 /* Don't return this sym if it is a fake function descriptor
4871 created by add_symbol_adjust. */
4872 && !(h->root.type == bfd_link_hash_undefweak
4873 && ((struct ppc_link_hash_entry *) h)->fake))
8387904d
AM		 4874 return h;
4875
4876 if (name[0] == '.')
4877 return h;
4878
4879 len = strlen (name);
4880 dot_name = bfd_alloc (abfd, len + 2);
4881 if (dot_name == NULL)
4882 return (struct elf_link_hash_entry *) 0 - 1;
4883 dot_name[0] = '.';
4884 memcpy (dot_name + 1, name, len + 1);
4885 h = _bfd_elf_archive_symbol_lookup (abfd, info, dot_name);
4886 bfd_release (abfd, dot_name);
4887 return h;
4888}
4889
4890/* This function satisfies all old ABI object references to ".bar" if a
99877b66
AM		 4891 new ABI object defines "bar". Well, at least, undefined dot symbols
4892 are made weak. This stops later archive searches from including an
4893 object if we already have a function descriptor definition. It also
35b0ce59
AM		 4894 prevents the linker complaining about undefined symbols.
4895 We also check and correct mismatched symbol visibility here. The
4896 most restrictive visibility of the function descriptor and the
4897 function entry symbol is used. */
8387904d
AM		 4898
4899static bfd_boolean
b3fac117 4900add_symbol_adjust (struct ppc_link_hash_entry *eh, struct bfd_link_info *info)
8387904d 4901{
8387904d
AM		 4902 struct ppc_link_hash_table *htab;
4903 struct ppc_link_hash_entry *fdh;
4904
b3fac117 4905 if (eh->elf.root.type == bfd_link_hash_indirect)
8387904d
AM		 4906 return TRUE;
4907
b3fac117
AM		 4908 if (eh->elf.root.type == bfd_link_hash_warning)
4909 eh = (struct ppc_link_hash_entry *) eh->elf.root.u.i.link;
8387904d 4910
b3fac117
AM		 4911 if (eh->elf.root.root.string[0] != '.')
4912 abort ();
8387904d 4913
b3fac117 4914 htab = ppc_hash_table (info);
4dfe6ac6
NC		 4915 if (htab == NULL)
4916 return FALSE;
4917
b31867b6
AM		 4918 fdh = lookup_fdh (eh, htab);
4919 if (fdh == NULL)
4920 {
4921 if (!info->relocatable
4922 && (eh->elf.root.type == bfd_link_hash_undefined
4923 || eh->elf.root.type == bfd_link_hash_undefweak)
4924 && eh->elf.ref_regular)
4925 {
4926 /* Make an undefweak function descriptor sym, which is enough to
4927 pull in an --as-needed shared lib, but won't cause link
4928 errors. Archives are handled elsewhere. */
4929 fdh = make_fdh (info, eh);
4930 if (fdh == NULL)
4931 return FALSE;
4932 fdh->elf.ref_regular = 1;
4933 }
bb700d78 4934 }
b31867b6 4935 else
8387904d 4936 {
35b0ce59
AM		 4937 unsigned entry_vis = ELF_ST_VISIBILITY (eh->elf.other) - 1;
4938 unsigned descr_vis = ELF_ST_VISIBILITY (fdh->elf.other) - 1;
4939 if (entry_vis < descr_vis)
4940 fdh->elf.other += entry_vis - descr_vis;
4941 else if (entry_vis > descr_vis)
4942 eh->elf.other += descr_vis - entry_vis;
4943
e87d886e
AM		 4944 if ((fdh->elf.root.type == bfd_link_hash_defined
4945 || fdh->elf.root.type == bfd_link_hash_defweak)
4946 && eh->elf.root.type == bfd_link_hash_undefined)
35b0ce59
AM		 4947 {
4948 eh->elf.root.type = bfd_link_hash_undefweak;
4949 eh->was_undefined = 1;
4950 htab->twiddled_syms = 1;
4951 }
8387904d 4952 }
99877b66 4953
8387904d
AM		 4954 return TRUE;
4955}
4956
f6c7c3e8
AM		 4957/* Set up opd section info and abiversion for IBFD, and process list
4958 of dot-symbols we made in link_hash_newfunc. */
b3fac117 4959
8387904d 4960static bfd_boolean
f6c7c3e8 4961ppc64_elf_before_check_relocs (bfd *ibfd, struct bfd_link_info *info)
8387904d 4962{
99877b66 4963 struct ppc_link_hash_table *htab;
b3fac117 4964 struct ppc_link_hash_entry **p, *eh;
433817dd 4965
0c8d6e5c 4966 if (!is_ppc64_elf (info->output_bfd))
35b0ce59 4967 return TRUE;
4dfe6ac6
NC		 4968 htab = ppc_hash_table (info);
4969 if (htab == NULL)
4970 return FALSE;
35b0ce59 4971
0c8d6e5c 4972 if (is_ppc64_elf (ibfd))
b3fac117 4973 {
f6c7c3e8
AM		 4974 asection *opd = bfd_get_section_by_name (ibfd, ".opd");
4975
4976 if (opd != NULL && opd->size != 0)
4977 {
4978 if (abiversion (ibfd) == 0)
4979 set_abiversion (ibfd, 1);
4980 else if (abiversion (ibfd) == 2)
4981 {
4982 info->callbacks->einfo (_("%P: %B .opd not allowed in ABI"
4983 " version %d\n"),
4984 ibfd, abiversion (ibfd));
4985 bfd_set_error (bfd_error_bad_value);
4986 return FALSE;
4987 }
4988
4989 if ((ibfd->flags & DYNAMIC) == 0
4990 && (opd->flags & SEC_RELOC) != 0
4991 && opd->reloc_count != 0
4992 && !bfd_is_abs_section (opd->output_section))
4993 {
4994 /* Garbage collection needs some extra help with .opd sections.
4995 We don't want to necessarily keep everything referenced by
4996 relocs in .opd, as that would keep all functions. Instead,
4997 if we reference an .opd symbol (a function descriptor), we
4998 want to keep the function code symbol's section. This is
4999 easy for global symbols, but for local syms we need to keep
5000 information about the associated function section. */
5001 bfd_size_type amt;
5002 asection **opd_sym_map;
5003
5004 amt = opd->size * sizeof (*opd_sym_map) / 8;
5005 opd_sym_map = bfd_zalloc (ibfd, amt);
5006 if (opd_sym_map == NULL)
5007 return FALSE;
5008 ppc64_elf_section_data (opd)->u.opd.func_sec = opd_sym_map;
5009 BFD_ASSERT (ppc64_elf_section_data (opd)->sec_type == sec_normal);
5010 ppc64_elf_section_data (opd)->sec_type = sec_opd;
5011 }
5012 }
5013
5014 /* For input files without an explicit abiversion in e_flags
5015 we should have flagged any with symbol st_other bits set
5016 as ELFv1 and above flagged those with .opd as ELFv2.
5017 Set the output abiversion if not yet set, and for any input
5018 still ambiguous, take its abiversion from the output.
5019 Differences in ABI are reported later. */
5020 if (abiversion (info->output_bfd) == 0)
5021 set_abiversion (info->output_bfd, abiversion (ibfd));
5022 else if (abiversion (ibfd) == 0)
5023 set_abiversion (ibfd, abiversion (info->output_bfd));
5024
b3fac117
AM		 5025 p = &htab->dot_syms;
5026 while ((eh = *p) != NULL)
5027 {
5028 *p = NULL;
1c865ab2
AM		 5029 if (&eh->elf == htab->elf.hgot)
5030 ;
5031 else if (htab->elf.hgot == NULL
5032 && strcmp (eh->elf.root.root.string, ".TOC.") == 0)
5033 htab->elf.hgot = &eh->elf;
5034 else if (!add_symbol_adjust (eh, info))
b3fac117
AM		 5035 return FALSE;
5036 p = &eh->u.next_dot_sym;
5037 }
5038 }
5039
5040 /* Clear the list for non-ppc64 input files. */
5041 p = &htab->dot_syms;
5042 while ((eh = *p) != NULL)
5043 {
5044 *p = NULL;
5045 p = &eh->u.next_dot_sym;
5046 }
99877b66
AM		 5047
5048 /* We need to fix the undefs list for any syms we have twiddled to
5049 undef_weak. */
5050 if (htab->twiddled_syms)
5051 {
77cfaee6 5052 bfd_link_repair_undef_list (&htab->elf.root);
99877b66
AM		 5053 htab->twiddled_syms = 0;
5054 }
b3fac117 5055 return TRUE;
8387904d
AM		 5056}
5057
97fed1c9
JJ		 5058/* Undo hash table changes when an --as-needed input file is determined
5059 not to be needed. */
5060
5061static bfd_boolean
e5034e59
AM		 5062ppc64_elf_notice_as_needed (bfd *ibfd,
5063 struct bfd_link_info *info,
5064 enum notice_asneeded_action act)
97fed1c9 5065{
e5034e59
AM		 5066 if (act == notice_not_needed)
5067 {
5068 struct ppc_link_hash_table *htab = ppc_hash_table (info);
4dfe6ac6 5069
e5034e59
AM		 5070 if (htab == NULL)
5071 return FALSE;
4dfe6ac6 5072
e5034e59
AM		 5073 htab->dot_syms = NULL;
5074 }
5075 return _bfd_elf_notice_as_needed (ibfd, info, act);
97fed1c9
JJ		 5076}
5077
aa374f67
AM		 5078/* If --just-symbols against a final linked binary, then assume we need
5079 toc adjusting stubs when calling functions defined there. */
5080
5081static void
5082ppc64_elf_link_just_syms (asection *sec, struct bfd_link_info *info)
5083{
5084 if ((sec->flags & SEC_CODE) != 0
5085 && (sec->owner->flags & (EXEC_P | DYNAMIC)) != 0
5086 && is_ppc64_elf (sec->owner))
5087 {
2c3f079f
AM		 5088 if (abiversion (sec->owner) >= 2
5089 || bfd_get_section_by_name (sec->owner, ".opd") != NULL)
aa374f67
AM		 5090 sec->has_toc_reloc = 1;
5091 }
5092 _bfd_elf_link_just_syms (sec, info);
5093}
5094
e054468f 5095static struct plt_entry **
4ce794b7
AM		 5096update_local_sym_info (bfd *abfd, Elf_Internal_Shdr *symtab_hdr,
5097 unsigned long r_symndx, bfd_vma r_addend, int tls_type)
411e1bfb
AM		 5098{
5099 struct got_entry **local_got_ents = elf_local_got_ents (abfd);
e054468f 5100 struct plt_entry **local_plt;
f961d9dd 5101 unsigned char *local_got_tls_masks;
411e1bfb
AM		 5102
5103 if (local_got_ents == NULL)
5104 {
5105 bfd_size_type size = symtab_hdr->sh_info;
5106
e054468f
AM		 5107 size *= (sizeof (*local_got_ents)
5108 + sizeof (*local_plt)
5109 + sizeof (*local_got_tls_masks));
4ce794b7 5110 local_got_ents = bfd_zalloc (abfd, size);
411e1bfb 5111 if (local_got_ents == NULL)
e054468f 5112 return NULL;
411e1bfb
AM		 5113 elf_local_got_ents (abfd) = local_got_ents;
5114 }
5115
e054468f 5116 if ((tls_type & (PLT_IFUNC | TLS_EXPLICIT)) == 0)
411e1bfb
AM		 5117 {
5118 struct got_entry *ent;
5119
5120 for (ent = local_got_ents[r_symndx]; ent != NULL; ent = ent->next)
e717da7e
AM		 5121 if (ent->addend == r_addend
5122 && ent->owner == abfd
5123 && ent->tls_type == tls_type)
411e1bfb
AM		 5124 break;
5125 if (ent == NULL)
5126 {
5127 bfd_size_type amt = sizeof (*ent);
4ce794b7 5128 ent = bfd_alloc (abfd, amt);
411e1bfb
AM		 5129 if (ent == NULL)
5130 return FALSE;
5131 ent->next = local_got_ents[r_symndx];
5132 ent->addend = r_addend;
e717da7e 5133 ent->owner = abfd;
411e1bfb 5134 ent->tls_type = tls_type;
927be08e 5135 ent->is_indirect = FALSE;
411e1bfb
AM		 5136 ent->got.refcount = 0;
5137 local_got_ents[r_symndx] = ent;
5138 }
5139 ent->got.refcount += 1;
5140 }
5141
e054468f 5142 local_plt = (struct plt_entry **) (local_got_ents + symtab_hdr->sh_info);
f961d9dd 5143 local_got_tls_masks = (unsigned char *) (local_plt + symtab_hdr->sh_info);
e7b938ca 5144 local_got_tls_masks[r_symndx] |= tls_type;
e054468f
AM		 5145
5146 return local_plt + r_symndx;
65f38f15
AM		 5147}
5148
411e1bfb 5149static bfd_boolean
e054468f 5150update_plt_info (bfd *abfd, struct plt_entry **plist, bfd_vma addend)
1e2f5b6e 5151{
411e1bfb 5152 struct plt_entry *ent;
1e2f5b6e 5153
e054468f 5154 for (ent = *plist; ent != NULL; ent = ent->next)
411e1bfb
AM		 5155 if (ent->addend == addend)
5156 break;
5157 if (ent == NULL)
1e2f5b6e 5158 {
411e1bfb 5159 bfd_size_type amt = sizeof (*ent);
4ce794b7 5160 ent = bfd_alloc (abfd, amt);
411e1bfb
AM		 5161 if (ent == NULL)
5162 return FALSE;
e054468f 5163 ent->next = *plist;
411e1bfb
AM		 5164 ent->addend = addend;
5165 ent->plt.refcount = 0;
e054468f 5166 *plist = ent;
1e2f5b6e 5167 }
411e1bfb 5168 ent->plt.refcount += 1;
b34976b6 5169 return TRUE;
1e2f5b6e
AM		 5170}
5171
e054468f
AM		 5172static bfd_boolean
5173is_branch_reloc (enum elf_ppc64_reloc_type r_type)
5174{
5175 return (r_type == R_PPC64_REL24
5176 || r_type == R_PPC64_REL14
5177 || r_type == R_PPC64_REL14_BRTAKEN
5178 || r_type == R_PPC64_REL14_BRNTAKEN
5179 || r_type == R_PPC64_ADDR24
5180 || r_type == R_PPC64_ADDR14
5181 || r_type == R_PPC64_ADDR14_BRTAKEN
5182 || r_type == R_PPC64_ADDR14_BRNTAKEN);
5183}
5184
5bd4f169 5185/* Look through the relocs for a section during the first phase, and
65f38f15 5186 calculate needed space in the global offset table, procedure
5d1634d7 5187 linkage table, and dynamic reloc sections. */
5bd4f169 5188
b34976b6 5189static bfd_boolean
4ce794b7
AM		 5190ppc64_elf_check_relocs (bfd *abfd, struct bfd_link_info *info,
5191 asection *sec, const Elf_Internal_Rela *relocs)
5bd4f169 5192{
65f38f15 5193 struct ppc_link_hash_table *htab;
5bd4f169 5194 Elf_Internal_Shdr *symtab_hdr;
c7e2358a 5195 struct elf_link_hash_entry **sym_hashes;
5bd4f169
AM		 5196 const Elf_Internal_Rela *rel;
5197 const Elf_Internal_Rela *rel_end;
5bd4f169 5198 asection *sreloc;
1e2f5b6e 5199 asection **opd_sym_map;
3a71aa26 5200 struct elf_link_hash_entry *tga, *dottga;
5bd4f169 5201
1049f94e 5202 if (info->relocatable)
b34976b6 5203 return TRUE;
5bd4f169 5204
680a3378
AM		 5205 /* Don't do anything special with non-loaded, non-alloced sections.
5206 In particular, any relocs in such sections should not affect GOT
5207 and PLT reference counting (ie. we don't allow them to create GOT
5208 or PLT entries), there's no possibility or desire to optimize TLS
5209 relocs, and there's not much point in propagating relocs to shared
5210 libs that the dynamic linker won't relocate. */
5211 if ((sec->flags & SEC_ALLOC) == 0)
5212 return TRUE;
5213
0c8d6e5c 5214 BFD_ASSERT (is_ppc64_elf (abfd));
0ffa91dd 5215
65f38f15 5216 htab = ppc_hash_table (info);
4dfe6ac6
NC		 5217 if (htab == NULL)
5218 return FALSE;
5219
3a71aa26
AM		 5220 tga = elf_link_hash_lookup (&htab->elf, "__tls_get_addr",
5221 FALSE, FALSE, TRUE);
5222 dottga = elf_link_hash_lookup (&htab->elf, ".__tls_get_addr",
5223 FALSE, FALSE, TRUE);
0ffa91dd 5224 symtab_hdr = &elf_symtab_hdr (abfd);
5bd4f169 5225 sym_hashes = elf_sym_hashes (abfd);
5bd4f169 5226 sreloc = NULL;
1e2f5b6e 5227 opd_sym_map = NULL;
f6c7c3e8
AM		 5228 if (ppc64_elf_section_data (sec) != NULL
5229 && ppc64_elf_section_data (sec)->sec_type == sec_opd)
5230 opd_sym_map = ppc64_elf_section_data (sec)->u.opd.func_sec;
5bd4f169
AM		 5231
5232 rel_end = relocs + sec->reloc_count;
5233 for (rel = relocs; rel < rel_end; rel++)
5234 {
5235 unsigned long r_symndx;
5236 struct elf_link_hash_entry *h;
04c9666a 5237 enum elf_ppc64_reloc_type r_type;
727fc41e 5238 int tls_type;
7c8fe5c4 5239 struct _ppc64_elf_section_data *ppc64_sec;
e054468f 5240 struct plt_entry **ifunc;
5bd4f169
AM		 5241
5242 r_symndx = ELF64_R_SYM (rel->r_info);
5243 if (r_symndx < symtab_hdr->sh_info)
5244 h = NULL;
5245 else
973a3492
L		 5246 {
5247 h = sym_hashes[r_symndx - symtab_hdr->sh_info];
b31867b6 5248 h = elf_follow_link (h);
81fbe831
AM		 5249
5250 /* PR15323, ref flags aren't set for references in the same
5251 object. */
5252 h->root.non_ir_ref = 1;
1c865ab2
AM		 5253
5254 if (h == htab->elf.hgot)
5255 sec->has_toc_reloc = 1;
973a3492 5256 }
5bd4f169 5257
727fc41e 5258 tls_type = 0;
e054468f 5259 ifunc = NULL;
25f23106
AM		 5260 if (h != NULL)
5261 {
5262 if (h->type == STT_GNU_IFUNC)
5263 {
5264 h->needs_plt = 1;
5265 ifunc = &h->plt.plist;
5266 }
5267 }
5268 else
5269 {
5270 Elf_Internal_Sym *isym = bfd_sym_from_r_symndx (&htab->sym_cache,
5271 abfd, r_symndx);
5272 if (isym == NULL)
5273 return FALSE;
5274
5275 if (ELF_ST_TYPE (isym->st_info) == STT_GNU_IFUNC)
5276 {
5277 ifunc = update_local_sym_info (abfd, symtab_hdr, r_symndx,
5278 rel->r_addend, PLT_IFUNC);
5279 if (ifunc == NULL)
5280 return FALSE;
5281 }
5282 }
4ce794b7 5283 r_type = ELF64_R_TYPE (rel->r_info);
e054468f
AM		 5284 if (is_branch_reloc (r_type))
5285 {
5286 if (h != NULL && (h == tga || h == dottga))
5287 {
5288 if (rel != relocs
5289 && (ELF64_R_TYPE (rel[-1].r_info) == R_PPC64_TLSGD
5290 || ELF64_R_TYPE (rel[-1].r_info) == R_PPC64_TLSLD))
5291 /* We have a new-style __tls_get_addr call with a marker
5292 reloc. */
5293 ;
5294 else
5295 /* Mark this section as having an old-style call. */
5296 sec->has_tls_get_addr_call = 1;
5297 }
727fc41e 5298
e054468f 5299 /* STT_GNU_IFUNC symbols must have a PLT entry. */
e054468f
AM		 5300 if (ifunc != NULL
5301 && !update_plt_info (abfd, ifunc, rel->r_addend))
5302 return FALSE;
5303 }
727fc41e 5304
a33d1f77 5305 switch (r_type)
5bd4f169 5306 {
727fc41e
AM		 5307 case R_PPC64_TLSGD:
5308 case R_PPC64_TLSLD:
5309 /* These special tls relocs tie a call to __tls_get_addr with
5310 its parameter symbol. */
5311 break;
5312
411e1bfb
AM		 5313 case R_PPC64_GOT_TLSLD16:
5314 case R_PPC64_GOT_TLSLD16_LO:
5315 case R_PPC64_GOT_TLSLD16_HI:
5316 case R_PPC64_GOT_TLSLD16_HA:
951fd09b 5317 tls_type = TLS_TLS | TLS_LD;
411e1bfb
AM		 5318 goto dogottls;
5319
5320 case R_PPC64_GOT_TLSGD16:
5321 case R_PPC64_GOT_TLSGD16_LO:
5322 case R_PPC64_GOT_TLSGD16_HI:
5323 case R_PPC64_GOT_TLSGD16_HA:
951fd09b 5324 tls_type = TLS_TLS | TLS_GD;
411e1bfb
AM		 5325 goto dogottls;
5326
5327 case R_PPC64_GOT_TPREL16_DS:
5328 case R_PPC64_GOT_TPREL16_LO_DS:
5329 case R_PPC64_GOT_TPREL16_HI:
5330 case R_PPC64_GOT_TPREL16_HA:
afb93314 5331 if (info->shared)
411e1bfb
AM		 5332 info->flags |= DF_STATIC_TLS;
5333 tls_type = TLS_TLS | TLS_TPREL;
5334 goto dogottls;
5335
5336 case R_PPC64_GOT_DTPREL16_DS:
5337 case R_PPC64_GOT_DTPREL16_LO_DS:
5338 case R_PPC64_GOT_DTPREL16_HI:
5339 case R_PPC64_GOT_DTPREL16_HA:
5340 tls_type = TLS_TLS | TLS_DTPREL;
5341 dogottls:
5342 sec->has_tls_reloc = 1;
5343 /* Fall thru */
5344
5bd4f169 5345 case R_PPC64_GOT16:
5bd4f169 5346 case R_PPC64_GOT16_DS:
65f38f15
AM		 5347 case R_PPC64_GOT16_HA:
5348 case R_PPC64_GOT16_HI:
5349 case R_PPC64_GOT16_LO:
5bd4f169 5350 case R_PPC64_GOT16_LO_DS:
65f38f15 5351 /* This symbol requires a global offset table entry. */
4c52953f 5352 sec->has_toc_reloc = 1;
33c0ec9d
AM		 5353 if (r_type == R_PPC64_GOT_TLSLD16
5354 || r_type == R_PPC64_GOT_TLSGD16
5355 || r_type == R_PPC64_GOT_TPREL16_DS
5356 || r_type == R_PPC64_GOT_DTPREL16_DS
5357 || r_type == R_PPC64_GOT16
5358 || r_type == R_PPC64_GOT16_DS)
5359 {
5360 htab->do_multi_toc = 1;
d77c8a4b 5361 ppc64_elf_tdata (abfd)->has_small_toc_reloc = 1;
33c0ec9d
AM		 5362 }
5363
e717da7e
AM		 5364 if (ppc64_elf_tdata (abfd)->got == NULL
5365 && !create_got_section (abfd, info))
b34976b6 5366 return FALSE;
5bd4f169
AM		 5367
5368 if (h != NULL)
5369 {
411e1bfb
AM		 5370 struct ppc_link_hash_entry *eh;
5371 struct got_entry *ent;
65f38f15 5372
411e1bfb
AM		 5373 eh = (struct ppc_link_hash_entry *) h;
5374 for (ent = eh->elf.got.glist; ent != NULL; ent = ent->next)
5375 if (ent->addend == rel->r_addend
e717da7e 5376 && ent->owner == abfd
411e1bfb
AM		 5377 && ent->tls_type == tls_type)
5378 break;
5379 if (ent == NULL)
5bd4f169 5380 {
411e1bfb 5381 bfd_size_type amt = sizeof (*ent);
4ce794b7 5382 ent = bfd_alloc (abfd, amt);
411e1bfb 5383 if (ent == NULL)
b34976b6 5384 return FALSE;
411e1bfb
AM		 5385 ent->next = eh->elf.got.glist;
5386 ent->addend = rel->r_addend;
e717da7e 5387 ent->owner = abfd;
411e1bfb 5388 ent->tls_type = tls_type;
927be08e 5389 ent->is_indirect = FALSE;
411e1bfb
AM		 5390 ent->got.refcount = 0;
5391 eh->elf.got.glist = ent;
5bd4f169 5392 }
411e1bfb 5393 ent->got.refcount += 1;
e7b938ca 5394 eh->tls_mask |= tls_type;
5bd4f169 5395 }
411e1bfb
AM		 5396 else
5397 /* This is a global offset table entry for a local symbol. */
5398 if (!update_local_sym_info (abfd, symtab_hdr, r_symndx,
5399 rel->r_addend, tls_type))
5400 return FALSE;
a345bc8d
AM		 5401
5402 /* We may also need a plt entry if the symbol turns out to be
5403 an ifunc. */
f6c7c3e8 5404 if (h != NULL && !info->shared && abiversion (abfd) != 1)
a345bc8d
AM		 5405 {
5406 if (!update_plt_info (abfd, &h->plt.plist, rel->r_addend))
5407 return FALSE;
5408 }
5bd4f169
AM		 5409 break;
5410
5bd4f169 5411 case R_PPC64_PLT16_HA:
65f38f15
AM		 5412 case R_PPC64_PLT16_HI:
5413 case R_PPC64_PLT16_LO:
5414 case R_PPC64_PLT32:
5415 case R_PPC64_PLT64:
5bd4f169 5416 /* This symbol requires a procedure linkage table entry. We
3fad3c7c
AM		 5417 actually build the entry in adjust_dynamic_symbol,
5418 because this might be a case of linking PIC code without
5419 linking in any dynamic objects, in which case we don't
5420 need to generate a procedure linkage table after all. */
5bd4f169
AM		 5421 if (h == NULL)
5422 {
5423 /* It does not make sense to have a procedure linkage
3fad3c7c 5424 table entry for a local symbol. */
5bd4f169 5425 bfd_set_error (bfd_error_bad_value);
b34976b6 5426 return FALSE;
5bd4f169 5427 }
411e1bfb 5428 else
e054468f
AM		 5429 {
5430 if (!update_plt_info (abfd, &h->plt.plist, rel->r_addend))
5431 return FALSE;
5432 h->needs_plt = 1;
5433 if (h->root.root.string[0] == '.'
5434 && h->root.root.string[1] != '\0')
5435 ((struct ppc_link_hash_entry *) h)->is_func = 1;
5436 }
5bd4f169
AM		 5437 break;
5438
5439 /* The following relocations don't need to propagate the
5440 relocation if linking a shared object since they are
5441 section relative. */
5442 case R_PPC64_SECTOFF:
5443 case R_PPC64_SECTOFF_LO:
5444 case R_PPC64_SECTOFF_HI:
5445 case R_PPC64_SECTOFF_HA:
5446 case R_PPC64_SECTOFF_DS:
5447 case R_PPC64_SECTOFF_LO_DS:
411e1bfb
AM		 5448 case R_PPC64_DTPREL16:
5449 case R_PPC64_DTPREL16_LO:
5450 case R_PPC64_DTPREL16_HI:
5451 case R_PPC64_DTPREL16_HA:
5452 case R_PPC64_DTPREL16_DS:
5453 case R_PPC64_DTPREL16_LO_DS:
f9c6b907
AM		 5454 case R_PPC64_DTPREL16_HIGH:
5455 case R_PPC64_DTPREL16_HIGHA:
411e1bfb
AM		 5456 case R_PPC64_DTPREL16_HIGHER:
5457 case R_PPC64_DTPREL16_HIGHERA:
5458 case R_PPC64_DTPREL16_HIGHEST:
5459 case R_PPC64_DTPREL16_HIGHESTA:
5bd4f169
AM		 5460 break;
5461
ad8e1ba5 5462 /* Nor do these. */
25f23106
AM		 5463 case R_PPC64_REL16:
5464 case R_PPC64_REL16_LO:
5465 case R_PPC64_REL16_HI:
5466 case R_PPC64_REL16_HA:
5467 break;
5468
45965137
AM		 5469 /* Not supported as a dynamic relocation. */
5470 case R_PPC64_ADDR64_LOCAL:
5471 if (info->shared)
5472 {
5473 if (!ppc64_elf_howto_table[R_PPC64_ADDR32])
5474 ppc_howto_init ();
5475 info->callbacks->einfo (_("%P: %H: %s reloc unsupported "
5476 "in shared libraries and PIEs.\n"),
5477 abfd, sec, rel->r_offset,
5478 ppc64_elf_howto_table[r_type]->name);
5479 bfd_set_error (bfd_error_bad_value);
5480 return FALSE;
5481 }
5482 break;
5483
ad8e1ba5 5484 case R_PPC64_TOC16:
33c0ec9d
AM		 5485 case R_PPC64_TOC16_DS:
5486 htab->do_multi_toc = 1;
d77c8a4b 5487 ppc64_elf_tdata (abfd)->has_small_toc_reloc = 1;
ad8e1ba5
AM		 5488 case R_PPC64_TOC16_LO:
5489 case R_PPC64_TOC16_HI:
5490 case R_PPC64_TOC16_HA:
ad8e1ba5 5491 case R_PPC64_TOC16_LO_DS:
4c52953f 5492 sec->has_toc_reloc = 1;
ad8e1ba5
AM		 5493 break;
5494
5bd4f169
AM		 5495 /* This relocation describes the C++ object vtable hierarchy.
5496 Reconstruct it for later use during GC. */
5497 case R_PPC64_GNU_VTINHERIT:
c152c796 5498 if (!bfd_elf_gc_record_vtinherit (abfd, sec, h, rel->r_offset))
b34976b6 5499 return FALSE;
5bd4f169
AM		 5500 break;
5501
5502 /* This relocation describes which C++ vtable entries are actually
5503 used. Record for later use during GC. */
5504 case R_PPC64_GNU_VTENTRY:
d17e0c6e
JB		 5505 BFD_ASSERT (h != NULL);
5506 if (h != NULL
5507 && !bfd_elf_gc_record_vtentry (abfd, sec, h, rel->r_addend))
b34976b6 5508 return FALSE;
5bd4f169
AM		 5509 break;
5510
721956f4
AM		 5511 case R_PPC64_REL14:
5512 case R_PPC64_REL14_BRTAKEN:
5513 case R_PPC64_REL14_BRNTAKEN:
220c76dd
AM		 5514 {
5515 asection *dest = NULL;
5516
5517 /* Heuristic: If jumping outside our section, chances are
5518 we are going to need a stub. */
5519 if (h != NULL)
5520 {
5521 /* If the sym is weak it may be overridden later, so
5522 don't assume we know where a weak sym lives. */
5523 if (h->root.type == bfd_link_hash_defined)
5524 dest = h->root.u.def.section;
5525 }
5526 else
87d72d41
AM		 5527 {
5528 Elf_Internal_Sym *isym;
5529
5530 isym = bfd_sym_from_r_symndx (&htab->sym_cache,
5531 abfd, r_symndx);
5532 if (isym == NULL)
5533 return FALSE;
5534
5535 dest = bfd_section_from_elf_index (abfd, isym->st_shndx);
5536 }
5537
220c76dd 5538 if (dest != sec)
7c8fe5c4 5539 ppc64_elf_section_data (sec)->has_14bit_branch = 1;
220c76dd 5540 }
721956f4
AM		 5541 /* Fall through. */
5542
5d1634d7 5543 case R_PPC64_REL24:
e054468f 5544 if (h != NULL && ifunc == NULL)
5d1634d7
AM		 5545 {
5546 /* We may need a .plt entry if the function this reloc
5547 refers to is in a shared lib. */
e054468f 5548 if (!update_plt_info (abfd, &h->plt.plist, rel->r_addend))
411e1bfb 5549 return FALSE;
e054468f
AM		 5550 h->needs_plt = 1;
5551 if (h->root.root.string[0] == '.'
5552 && h->root.root.string[1] != '\0')
5553 ((struct ppc_link_hash_entry *) h)->is_func = 1;
3a71aa26 5554 if (h == tga || h == dottga)
411e1bfb 5555 sec->has_tls_reloc = 1;
411e1bfb
AM		 5556 }
5557 break;
5558
5559 case R_PPC64_TPREL64:
5560 tls_type = TLS_EXPLICIT | TLS_TLS | TLS_TPREL;
afb93314 5561 if (info->shared)
411e1bfb
AM		 5562 info->flags |= DF_STATIC_TLS;
5563 goto dotlstoc;
5564
5565 case R_PPC64_DTPMOD64:
5566 if (rel + 1 < rel_end
5567 && rel[1].r_info == ELF64_R_INFO (r_symndx, R_PPC64_DTPREL64)
5568 && rel[1].r_offset == rel->r_offset + 8)
951fd09b 5569 tls_type = TLS_EXPLICIT | TLS_TLS | TLS_GD;
411e1bfb 5570 else
951fd09b 5571 tls_type = TLS_EXPLICIT | TLS_TLS | TLS_LD;
411e1bfb
AM		 5572 goto dotlstoc;
5573
5574 case R_PPC64_DTPREL64:
5575 tls_type = TLS_EXPLICIT | TLS_TLS | TLS_DTPREL;
5576 if (rel != relocs
5577 && rel[-1].r_info == ELF64_R_INFO (r_symndx, R_PPC64_DTPMOD64)
5578 && rel[-1].r_offset == rel->r_offset - 8)
5579 /* This is the second reloc of a dtpmod, dtprel pair.
5580 Don't mark with TLS_DTPREL. */
5581 goto dodyn;
5582
5583 dotlstoc:
5584 sec->has_tls_reloc = 1;
5585 if (h != NULL)
5586 {
5587 struct ppc_link_hash_entry *eh;
5588 eh = (struct ppc_link_hash_entry *) h;
e7b938ca 5589 eh->tls_mask |= tls_type;
411e1bfb
AM		 5590 }
5591 else
5592 if (!update_local_sym_info (abfd, symtab_hdr, r_symndx,
5593 rel->r_addend, tls_type))
5594 return FALSE;
5595
7c8fe5c4
AM		 5596 ppc64_sec = ppc64_elf_section_data (sec);
5597 if (ppc64_sec->sec_type != sec_toc)
411e1bfb 5598 {
3a71aa26
AM		 5599 bfd_size_type amt;
5600
e7b938ca 5601 /* One extra to simplify get_tls_mask. */
3a71aa26
AM		 5602 amt = sec->size * sizeof (unsigned) / 8 + sizeof (unsigned);
5603 ppc64_sec->u.toc.symndx = bfd_zalloc (abfd, amt);
5604 if (ppc64_sec->u.toc.symndx == NULL)
5605 return FALSE;
5606 amt = sec->size * sizeof (bfd_vma) / 8;
5607 ppc64_sec->u.toc.add = bfd_zalloc (abfd, amt);
5608 if (ppc64_sec->u.toc.add == NULL)
411e1bfb 5609 return FALSE;
7c8fe5c4
AM		 5610 BFD_ASSERT (ppc64_sec->sec_type == sec_normal);
5611 ppc64_sec->sec_type = sec_toc;
411e1bfb
AM		 5612 }
5613 BFD_ASSERT (rel->r_offset % 8 == 0);
3a71aa26
AM		 5614 ppc64_sec->u.toc.symndx[rel->r_offset / 8] = r_symndx;
5615 ppc64_sec->u.toc.add[rel->r_offset / 8] = rel->r_addend;
951fd09b
AM		 5616
5617 /* Mark the second slot of a GD or LD entry.
5618 -1 to indicate GD and -2 to indicate LD. */
5619 if (tls_type == (TLS_EXPLICIT | TLS_TLS | TLS_GD))
3a71aa26 5620 ppc64_sec->u.toc.symndx[rel->r_offset / 8 + 1] = -1;
951fd09b 5621 else if (tls_type == (TLS_EXPLICIT | TLS_TLS | TLS_LD))
3a71aa26 5622 ppc64_sec->u.toc.symndx[rel->r_offset / 8 + 1] = -2;
411e1bfb
AM		 5623 goto dodyn;
5624
5625 case R_PPC64_TPREL16:
5626 case R_PPC64_TPREL16_LO:
5627 case R_PPC64_TPREL16_HI:
5628 case R_PPC64_TPREL16_HA:
5629 case R_PPC64_TPREL16_DS:
5630 case R_PPC64_TPREL16_LO_DS:
f9c6b907
AM		 5631 case R_PPC64_TPREL16_HIGH:
5632 case R_PPC64_TPREL16_HIGHA:
411e1bfb
AM		 5633 case R_PPC64_TPREL16_HIGHER:
5634 case R_PPC64_TPREL16_HIGHERA:
5635 case R_PPC64_TPREL16_HIGHEST:
5636 case R_PPC64_TPREL16_HIGHESTA:
5637 if (info->shared)
5638 {
afb93314 5639 info->flags |= DF_STATIC_TLS;
411e1bfb 5640 goto dodyn;
5d1634d7
AM		 5641 }
5642 break;
5643
e86ce104 5644 case R_PPC64_ADDR64:
1e2f5b6e 5645 if (opd_sym_map != NULL
1e2f5b6e 5646 && rel + 1 < rel_end
4ce794b7 5647 && ELF64_R_TYPE ((rel + 1)->r_info) == R_PPC64_TOC)
1e2f5b6e 5648 {
8387904d
AM		 5649 if (h != NULL)
5650 {
5651 if (h->root.root.string[0] == '.'
5652 && h->root.root.string[1] != 0
b31867b6 5653 && lookup_fdh ((struct ppc_link_hash_entry *) h, htab))
8387904d
AM		 5654 ;
5655 else
5656 ((struct ppc_link_hash_entry *) h)->is_func = 1;
5657 }
5658 else
5659 {
5660 asection *s;
87d72d41 5661 Elf_Internal_Sym *isym;
1e2f5b6e 5662
87d72d41
AM		 5663 isym = bfd_sym_from_r_symndx (&htab->sym_cache,
5664 abfd, r_symndx);
5665 if (isym == NULL)
8387904d 5666 return FALSE;
87d72d41
AM		 5667
5668 s = bfd_section_from_elf_index (abfd, isym->st_shndx);
5669 if (s != NULL && s != sec)
3f764659 5670 opd_sym_map[rel->r_offset / 8] = s;
8387904d 5671 }
1e2f5b6e 5672 }
e86ce104
AM		 5673 /* Fall through. */
5674
65f38f15
AM		 5675 case R_PPC64_ADDR16:
5676 case R_PPC64_ADDR16_DS:
5677 case R_PPC64_ADDR16_HA:
5678 case R_PPC64_ADDR16_HI:
f9c6b907
AM		 5679 case R_PPC64_ADDR16_HIGH:
5680 case R_PPC64_ADDR16_HIGHA:
65f38f15
AM		 5681 case R_PPC64_ADDR16_HIGHER:
5682 case R_PPC64_ADDR16_HIGHERA:
5683 case R_PPC64_ADDR16_HIGHEST:
5684 case R_PPC64_ADDR16_HIGHESTA:
5685 case R_PPC64_ADDR16_LO:
5686 case R_PPC64_ADDR16_LO_DS:
f6c7c3e8 5687 if (h != NULL && !info->shared && abiversion (abfd) != 1
a345bc8d
AM		 5688 && rel->r_addend == 0)
5689 {
5690 /* We may need a .plt entry if this reloc refers to a
5691 function in a shared lib. */
5692 if (!update_plt_info (abfd, &h->plt.plist, rel->r_addend))
5693 return FALSE;
5694 h->pointer_equality_needed = 1;
5695 }
5696 /* Fall through. */
5697
5698 case R_PPC64_REL30:
5699 case R_PPC64_REL32:
5700 case R_PPC64_REL64:
5701 case R_PPC64_ADDR14:
5702 case R_PPC64_ADDR14_BRNTAKEN:
5703 case R_PPC64_ADDR14_BRTAKEN:
65f38f15 5704 case R_PPC64_ADDR24:
65f38f15 5705 case R_PPC64_ADDR32:
65f38f15
AM		 5706 case R_PPC64_UADDR16:
5707 case R_PPC64_UADDR32:
5708 case R_PPC64_UADDR64:
5bd4f169 5709 case R_PPC64_TOC:
81848ca0
AM		 5710 if (h != NULL && !info->shared)
5711 /* We may need a copy reloc. */
f5385ebf 5712 h->non_got_ref = 1;
81848ca0 5713
41bd81ab 5714 /* Don't propagate .opd relocs. */
1e2f5b6e 5715 if (NO_OPD_RELOCS && opd_sym_map != NULL)
e86ce104 5716 break;
e86ce104 5717
65f38f15
AM		 5718 /* If we are creating a shared library, and this is a reloc
5719 against a global symbol, or a non PC relative reloc
5720 against a local symbol, then we need to copy the reloc
5721 into the shared library. However, if we are linking with
5722 -Bsymbolic, we do not need to copy a reloc against a
5723 global symbol which is defined in an object we are
5724 including in the link (i.e., DEF_REGULAR is set). At
5725 this point we have not seen all the input files, so it is
5726 possible that DEF_REGULAR is not set now but will be set
5727 later (it is never cleared). In case of a weak definition,
5728 DEF_REGULAR may be cleared later by a strong definition in
5729 a shared library. We account for that possibility below by
f4656909 5730 storing information in the dyn_relocs field of the hash
65f38f15
AM		 5731 table entry. A similar situation occurs when creating
5732 shared libraries and symbol visibility changes render the
5733 symbol local.
5734
5735 If on the other hand, we are creating an executable, we
5736 may need to keep relocations for symbols satisfied by a
5737 dynamic library if we manage to avoid copy relocs for the
5738 symbol. */
411e1bfb 5739 dodyn:
65f38f15 5740 if ((info->shared
1d483afe 5741 && (must_be_dyn_reloc (info, r_type)
65f38f15 5742 || (h != NULL
198f1157 5743 && (!SYMBOLIC_BIND (info, h)
65f38f15 5744 || h->root.type == bfd_link_hash_defweak
f5385ebf 5745 || !h->def_regular))))
f4656909
AM		 5746 || (ELIMINATE_COPY_RELOCS
5747 && !info->shared
65f38f15
AM		 5748 && h != NULL
5749 && (h->root.type == bfd_link_hash_defweak
25f23106
AM		 5750 || !h->def_regular))
5751 || (!info->shared
5752 && ifunc != NULL))
5bd4f169 5753 {
65f38f15
AM		 5754 /* We must copy these reloc types into the output file.
5755 Create a reloc section in dynobj and make room for
5756 this reloc. */
5bd4f169
AM		 5757 if (sreloc == NULL)
5758 {
83bac4b0
NC		 5759 sreloc = _bfd_elf_make_dynamic_reloc_section
5760 (sec, htab->elf.dynobj, 3, abfd, /*rela?*/ TRUE);
65f38f15 5761
5bd4f169 5762 if (sreloc == NULL)
83bac4b0 5763 return FALSE;
5bd4f169
AM		 5764 }
5765
65f38f15
AM		 5766 /* If this is a global symbol, we count the number of
5767 relocations we need for this symbol. */
5768 if (h != NULL)
5769 {
19e08130
AM		 5770 struct elf_dyn_relocs *p;
5771 struct elf_dyn_relocs **head;
5772
ec338859 5773 head = &((struct ppc_link_hash_entry *) h)->dyn_relocs;
19e08130
AM		 5774 p = *head;
5775 if (p == NULL || p->sec != sec)
5776 {
5777 p = bfd_alloc (htab->elf.dynobj, sizeof *p);
5778 if (p == NULL)
5779 return FALSE;
5780 p->next = *head;
5781 *head = p;
5782 p->sec = sec;
5783 p->count = 0;
5784 p->pc_count = 0;
5785 }
5786 p->count += 1;
5787 if (!must_be_dyn_reloc (info, r_type))
5788 p->pc_count += 1;
65f38f15
AM		 5789 }
5790 else
5791 {
ec338859
AM		 5792 /* Track dynamic relocs needed for local syms too.
5793 We really need local syms available to do this
5794 easily. Oh well. */
19e08130
AM		 5795 struct ppc_dyn_relocs *p;
5796 struct ppc_dyn_relocs **head;
5797 bfd_boolean is_ifunc;
ec338859 5798 asection *s;
6edfbbad 5799 void *vpp;
87d72d41 5800 Elf_Internal_Sym *isym;
6edfbbad 5801
87d72d41
AM		 5802 isym = bfd_sym_from_r_symndx (&htab->sym_cache,
5803 abfd, r_symndx);
5804 if (isym == NULL)
b34976b6 5805 return FALSE;
ec338859 5806
87d72d41
AM		 5807 s = bfd_section_from_elf_index (abfd, isym->st_shndx);
5808 if (s == NULL)
5809 s = sec;
5810
6edfbbad 5811 vpp = &elf_section_data (s)->local_dynrel;
19e08130
AM		 5812 head = (struct ppc_dyn_relocs **) vpp;
5813 is_ifunc = ELF_ST_TYPE (isym->st_info) == STT_GNU_IFUNC;
5814 p = *head;
5815 if (p != NULL && p->sec == sec && p->ifunc != is_ifunc)
5816 p = p->next;
5817 if (p == NULL || p->sec != sec || p->ifunc != is_ifunc)
5818 {
5819 p = bfd_alloc (htab->elf.dynobj, sizeof *p);
5820 if (p == NULL)
5821 return FALSE;
5822 p->next = *head;
5823 *head = p;
5824 p->sec = sec;
5825 p->ifunc = is_ifunc;
5826 p->count = 0;
5827 }
5828 p->count += 1;
ec338859 5829 }
65f38f15 5830 }
5bd4f169 5831 break;
65f38f15
AM		 5832
5833 default:
96e0dda4 5834 break;
5bd4f169
AM		 5835 }
5836 }
5837
b34976b6 5838 return TRUE;
5bd4f169
AM		 5839}
5840
ee67d69a
AM		 5841/* Merge backend specific data from an object file to the output
5842 object file when linking. */
5843
5844static bfd_boolean
5845ppc64_elf_merge_private_bfd_data (bfd *ibfd, bfd *obfd)
5846{
5847 unsigned long iflags, oflags;
5848
5849 if ((ibfd->flags & BFD_LINKER_CREATED) != 0)
5850 return TRUE;
5851
5852 if (!is_ppc64_elf (ibfd) || !is_ppc64_elf (obfd))
5853 return TRUE;
5854
5855 if (!_bfd_generic_verify_endian_match (ibfd, obfd))
5856 return FALSE;
5857
5858 iflags = elf_elfheader (ibfd)->e_flags;
5859 oflags = elf_elfheader (obfd)->e_flags;
5860
f6c7c3e8 5861 if (iflags & ~EF_PPC64_ABI)
ee67d69a
AM		 5862 {
5863 (*_bfd_error_handler)
5864 (_("%B uses unknown e_flags 0x%lx"), ibfd, iflags);
5865 bfd_set_error (bfd_error_bad_value);
5866 return FALSE;
5867 }
f6c7c3e8 5868 else if (iflags != oflags && iflags != 0)
ee67d69a
AM		 5869 {
5870 (*_bfd_error_handler)
5871 (_("%B: ABI version %ld is not compatible with ABI version %ld output"),
5872 ibfd, iflags, oflags);
5873 bfd_set_error (bfd_error_bad_value);
5874 return FALSE;
5875 }
5876
5877 /* Merge Tag_compatibility attributes and any common GNU ones. */
5878 _bfd_elf_merge_object_attributes (ibfd, obfd);
5879
5880 return TRUE;
5881}
5882
5883static bfd_boolean
5884ppc64_elf_print_private_bfd_data (bfd *abfd, void *ptr)
5885{
5886 /* Print normal ELF private data. */
5887 _bfd_elf_print_private_bfd_data (abfd, ptr);
5888
5889 if (elf_elfheader (abfd)->e_flags != 0)
5890 {
5891 FILE *file = ptr;
5892
5893 /* xgettext:c-format */
5894 fprintf (file, _("private flags = 0x%lx:"),
5895 elf_elfheader (abfd)->e_flags);
5896
5897 if ((elf_elfheader (abfd)->e_flags & EF_PPC64_ABI) != 0)
5898 fprintf (file, _(" [abiv%ld]"),
5899 elf_elfheader (abfd)->e_flags & EF_PPC64_ABI);
5900 fputc ('\n', file);
5901 }
5902
5903 return TRUE;
5904}
5905
8387904d
AM		 5906/* OFFSET in OPD_SEC specifies a function descriptor. Return the address
5907 of the code entry point, and its section. */
5908
5909static bfd_vma
5910opd_entry_value (asection *opd_sec,
5911 bfd_vma offset,
5912 asection **code_sec,
aef36ac1
AM		 5913 bfd_vma *code_off,
5914 bfd_boolean in_code_sec)
8387904d
AM		 5915{
5916 bfd *opd_bfd = opd_sec->owner;
8860955f 5917 Elf_Internal_Rela *relocs;
8387904d 5918 Elf_Internal_Rela *lo, *hi, *look;
645ea6a9 5919 bfd_vma val;
8387904d 5920
9f296da3
AM		 5921 /* No relocs implies we are linking a --just-symbols object, or looking
5922 at a final linked executable with addr2line or somesuch. */
4b85d634
AM		 5923 if (opd_sec->reloc_count == 0)
5924 {
729eabd5 5925 bfd_byte *contents = ppc64_elf_tdata (opd_bfd)->opd.contents;
3b36f7e6 5926
729eabd5
AM		 5927 if (contents == NULL)
5928 {
5929 if (!bfd_malloc_and_get_section (opd_bfd, opd_sec, &contents))
5930 return (bfd_vma) -1;
5931 ppc64_elf_tdata (opd_bfd)->opd.contents = contents;
5932 }
ee1e4ede 5933
729eabd5 5934 val = bfd_get_64 (opd_bfd, contents + offset);
aef36ac1
AM		 5935 if (code_sec != NULL)
5936 {
5937 asection *sec, *likely = NULL;
ee1e4ede 5938
aef36ac1 5939 if (in_code_sec)
4b85d634 5940 {
aef36ac1
AM		 5941 sec = *code_sec;
5942 if (sec->vma <= val
5943 && val < sec->vma + sec->size)
5944 likely = sec;
5945 else
5946 val = -1;
5947 }
5948 else
5949 for (sec = opd_bfd->sections; sec != NULL; sec = sec->next)
5950 if (sec->vma <= val
5951 && (sec->flags & SEC_LOAD) != 0
5952 && (sec->flags & SEC_ALLOC) != 0)
5953 likely = sec;
5954 if (likely != NULL)
5955 {
5956 *code_sec = likely;
5957 if (code_off != NULL)
5958 *code_off = val - likely->vma;
4b85d634
AM		 5959 }
5960 }
aef36ac1 5961 return val;
4b85d634
AM		 5962 }
5963
0c8d6e5c 5964 BFD_ASSERT (is_ppc64_elf (opd_bfd));
0ffa91dd 5965
729eabd5 5966 relocs = ppc64_elf_tdata (opd_bfd)->opd.relocs;
8860955f
AM		 5967 if (relocs == NULL)
5968 relocs = _bfd_elf_link_read_relocs (opd_bfd, opd_sec, NULL, NULL, TRUE);
645ea6a9 5969
8387904d 5970 /* Go find the opd reloc at the sym address. */
8860955f 5971 lo = relocs;
8387904d
AM		 5972 BFD_ASSERT (lo != NULL);
5973 hi = lo + opd_sec->reloc_count - 1; /* ignore last reloc */
645ea6a9 5974 val = (bfd_vma) -1;
8387904d
AM		 5975 while (lo < hi)
5976 {
5977 look = lo + (hi - lo) / 2;
5978 if (look->r_offset < offset)
5979 lo = look + 1;
5980 else if (look->r_offset > offset)
5981 hi = look;
5982 else
5983 {
0ffa91dd
NC		 5984 Elf_Internal_Shdr *symtab_hdr = &elf_symtab_hdr (opd_bfd);
5985
8387904d
AM		 5986 if (ELF64_R_TYPE (look->r_info) == R_PPC64_ADDR64
5987 && ELF64_R_TYPE ((look + 1)->r_info) == R_PPC64_TOC)
5988 {
5989 unsigned long symndx = ELF64_R_SYM (look->r_info);
8387904d
AM		 5990 asection *sec;
5991
62599110
AM		 5992 if (symndx < symtab_hdr->sh_info
5993 || elf_sym_hashes (opd_bfd) == NULL)
8387904d
AM		 5994 {
5995 Elf_Internal_Sym *sym;
5996
5997 sym = (Elf_Internal_Sym *) symtab_hdr->contents;
5998 if (sym == NULL)
5999 {
62599110
AM		 6000 size_t symcnt = symtab_hdr->sh_info;
6001 if (elf_sym_hashes (opd_bfd) == NULL)
6002 symcnt = symtab_hdr->sh_size / symtab_hdr->sh_entsize;
6003 sym = bfd_elf_get_elf_syms (opd_bfd, symtab_hdr, symcnt,
8387904d
AM		 6004 0, NULL, NULL, NULL);
6005 if (sym == NULL)
645ea6a9 6006 break;
8387904d
AM		 6007 symtab_hdr->contents = (bfd_byte *) sym;
6008 }
6009
6010 sym += symndx;
6011 val = sym->st_value;
cb33740c 6012 sec = bfd_section_from_elf_index (opd_bfd, sym->st_shndx);
8387904d
AM		 6013 BFD_ASSERT ((sec->flags & SEC_MERGE) == 0);
6014 }
6015 else
6016 {
6017 struct elf_link_hash_entry **sym_hashes;
6018 struct elf_link_hash_entry *rh;
6019
6020 sym_hashes = elf_sym_hashes (opd_bfd);
6021 rh = sym_hashes[symndx - symtab_hdr->sh_info];
128205bb
AM		 6022 if (rh != NULL)
6023 {
6024 rh = elf_follow_link (rh);
6025 BFD_ASSERT (rh->root.type == bfd_link_hash_defined
6026 || rh->root.type == bfd_link_hash_defweak);
6027 val = rh->root.u.def.value;
6028 sec = rh->root.u.def.section;
6029 }
6030 else
6031 {
6032 /* Handle the odd case where we can be called
6033 during bfd_elf_link_add_symbols before the
6034 symbol hashes have been fully populated. */
6035 Elf_Internal_Sym *sym;
6036
6037 sym = bfd_elf_get_elf_syms (opd_bfd, symtab_hdr, 1,
6038 symndx, NULL, NULL, NULL);
6039 if (sym == NULL)
6040 break;
6041
6042 val = sym->st_value;
6043 sec = bfd_section_from_elf_index (opd_bfd, sym->st_shndx);
6044 free (sym);
6045 }
8387904d
AM		 6046 }
6047 val += look->r_addend;
6048 if (code_off != NULL)
6049 *code_off = val;
6050 if (code_sec != NULL)
aef36ac1
AM		 6051 {
6052 if (in_code_sec && *code_sec != sec)
6053 return -1;
6054 else
6055 *code_sec = sec;
6056 }
8387904d
AM		 6057 if (sec != NULL && sec->output_section != NULL)
6058 val += sec->output_section->vma + sec->output_offset;
8387904d
AM		 6059 }
6060 break;
6061 }
6062 }
645ea6a9 6063
645ea6a9 6064 return val;
8387904d
AM		 6065}
6066
aef36ac1
AM		 6067/* If the ELF symbol SYM might be a function in SEC, return the
6068 function size and set *CODE_OFF to the function's entry point,
6069 otherwise return zero. */
9f296da3 6070
aef36ac1
AM		 6071static bfd_size_type
6072ppc64_elf_maybe_function_sym (const asymbol *sym, asection *sec,
6073 bfd_vma *code_off)
9f296da3 6074{
aef36ac1
AM		 6075 bfd_size_type size;
6076
6077 if ((sym->flags & (BSF_SECTION_SYM | BSF_FILE | BSF_OBJECT
6078 | BSF_THREAD_LOCAL | BSF_RELC | BSF_SRELC)) != 0)
6079 return 0;
6080
6081 size = 0;
6082 if (!(sym->flags & BSF_SYNTHETIC))
6083 size = ((elf_symbol_type *) sym)->internal_elf_sym.st_size;
6084
6085 if (strcmp (sym->section->name, ".opd") == 0)
9f296da3 6086 {
aef36ac1
AM		 6087 if (opd_entry_value (sym->section, sym->value,
6088 &sec, code_off, TRUE) == (bfd_vma) -1)
6089 return 0;
6090 /* An old ABI binary with dot-syms has a size of 24 on the .opd
6091 symbol. This size has nothing to do with the code size of the
6092 function, which is what we're supposed to return, but the
6093 code size isn't available without looking up the dot-sym.
6094 However, doing that would be a waste of time particularly
6095 since elf_find_function will look at the dot-sym anyway.
6096 Now, elf_find_function will keep the largest size of any
6097 function sym found at the code address of interest, so return
6098 1 here to avoid it incorrectly caching a larger function size
6099 for a small function. This does mean we return the wrong
6100 size for a new-ABI function of size 24, but all that does is
6101 disable caching for such functions. */
6102 if (size == 24)
6103 size = 1;
9f296da3 6104 }
aef36ac1
AM		 6105 else
6106 {
6107 if (sym->section != sec)
6108 return 0;
6109 *code_off = sym->value;
6110 }
6111 if (size == 0)
6112 size = 1;
6113 return size;
9f296da3
AM		 6114}
6115
854b41e7
AM		 6116/* Return true if symbol is defined in a regular object file. */
6117
6118static bfd_boolean
6119is_static_defined (struct elf_link_hash_entry *h)
6120{
6121 return ((h->root.type == bfd_link_hash_defined
6122 || h->root.type == bfd_link_hash_defweak)
6123 && h->root.u.def.section != NULL
6124 && h->root.u.def.section->output_section != NULL);
6125}
6126
b31867b6
AM		 6127/* If FDH is a function descriptor symbol, return the associated code
6128 entry symbol if it is defined. Return NULL otherwise. */
6129
6130static struct ppc_link_hash_entry *
6131defined_code_entry (struct ppc_link_hash_entry *fdh)
6132{
6133 if (fdh->is_func_descriptor)
6134 {
6135 struct ppc_link_hash_entry *fh = ppc_follow_link (fdh->oh);
6136 if (fh->elf.root.type == bfd_link_hash_defined
6137 || fh->elf.root.type == bfd_link_hash_defweak)
6138 return fh;
6139 }
6140 return NULL;
6141}
6142
6143/* If FH is a function code entry symbol, return the associated
6144 function descriptor symbol if it is defined. Return NULL otherwise. */
6145
6146static struct ppc_link_hash_entry *
6147defined_func_desc (struct ppc_link_hash_entry *fh)
6148{
6149 if (fh->oh != NULL
6150 && fh->oh->is_func_descriptor)
6151 {
6152 struct ppc_link_hash_entry *fdh = ppc_follow_link (fh->oh);
6153 if (fdh->elf.root.type == bfd_link_hash_defined
6154 || fdh->elf.root.type == bfd_link_hash_defweak)
6155 return fdh;
6156 }
6157 return NULL;
6158}
6159
74f0fb50
AM		 6160/* Mark all our entry sym sections, both opd and code section. */
6161
6162static void
6163ppc64_elf_gc_keep (struct bfd_link_info *info)
6164{
6165 struct ppc_link_hash_table *htab = ppc_hash_table (info);
6166 struct bfd_sym_chain *sym;
6167
4dfe6ac6
NC		 6168 if (htab == NULL)
6169 return;
6170
74f0fb50
AM		 6171 for (sym = info->gc_sym_list; sym != NULL; sym = sym->next)
6172 {
b31867b6 6173 struct ppc_link_hash_entry *eh, *fh;
74f0fb50
AM		 6174 asection *sec;
6175
6176 eh = (struct ppc_link_hash_entry *)
b31867b6 6177 elf_link_hash_lookup (&htab->elf, sym->name, FALSE, FALSE, TRUE);
74f0fb50
AM		 6178 if (eh == NULL)
6179 continue;
6180 if (eh->elf.root.type != bfd_link_hash_defined
6181 && eh->elf.root.type != bfd_link_hash_defweak)
6182 continue;
6183
b31867b6
AM		 6184 fh = defined_code_entry (eh);
6185 if (fh != NULL)
74f0fb50 6186 {
b31867b6 6187 sec = fh->elf.root.u.def.section;
74f0fb50
AM		 6188 sec->flags |= SEC_KEEP;
6189 }
6190 else if (get_opd_info (eh->elf.root.u.def.section) != NULL
6191 && opd_entry_value (eh->elf.root.u.def.section,
6192 eh->elf.root.u.def.value,
aef36ac1 6193 &sec, NULL, FALSE) != (bfd_vma) -1)
74f0fb50
AM		 6194 sec->flags |= SEC_KEEP;
6195
6196 sec = eh->elf.root.u.def.section;
6197 sec->flags |= SEC_KEEP;
6198 }
6199}
6200
64d03ab5
AM		 6201/* Mark sections containing dynamically referenced symbols. When
6202 building shared libraries, we must assume that any visible symbol is
6203 referenced. */
6204
6205static bfd_boolean
6206ppc64_elf_gc_mark_dynamic_ref (struct elf_link_hash_entry *h, void *inf)
6207{
6208 struct bfd_link_info *info = (struct bfd_link_info *) inf;
6209 struct ppc_link_hash_entry *eh = (struct ppc_link_hash_entry *) h;
b31867b6 6210 struct ppc_link_hash_entry *fdh;
b407645f 6211 struct bfd_elf_dynamic_list *d = info->dynamic_list;
64d03ab5 6212
64d03ab5 6213 /* Dynamic linking info is on the func descriptor sym. */
b31867b6
AM		 6214 fdh = defined_func_desc (eh);
6215 if (fdh != NULL)
6216 eh = fdh;
64d03ab5
AM		 6217
6218 if ((eh->elf.root.type == bfd_link_hash_defined
6219 || eh->elf.root.type == bfd_link_hash_defweak)
6220 && (eh->elf.ref_dynamic
b407645f 6221 || (eh->elf.def_regular
64d03ab5 6222 && ELF_ST_VISIBILITY (eh->elf.other) != STV_INTERNAL
4c58e0d8 6223 && ELF_ST_VISIBILITY (eh->elf.other) != STV_HIDDEN
b407645f
AM		 6224 && (!info->executable
6225 || info->export_dynamic
6226 || (eh->elf.dynamic
6227 && d != NULL
6228 && (*d->match) (&d->head, NULL, eh->elf.root.root.string)))
4c58e0d8
AM		 6229 && (strchr (eh->elf.root.root.string, ELF_VER_CHR) != NULL
6230 || !bfd_hide_sym_by_version (info->version_info,
6231 eh->elf.root.root.string)))))
64d03ab5
AM		 6232 {
6233 asection *code_sec;
b31867b6 6234 struct ppc_link_hash_entry *fh;
64d03ab5
AM		 6235
6236 eh->elf.root.u.def.section->flags |= SEC_KEEP;
6237
6238 /* Function descriptor syms cause the associated
6239 function code sym section to be marked. */
b31867b6
AM		 6240 fh = defined_code_entry (eh);
6241 if (fh != NULL)
6242 {
6243 code_sec = fh->elf.root.u.def.section;
6244 code_sec->flags |= SEC_KEEP;
6245 }
64d03ab5
AM		 6246 else if (get_opd_info (eh->elf.root.u.def.section) != NULL
6247 && opd_entry_value (eh->elf.root.u.def.section,
6248 eh->elf.root.u.def.value,
aef36ac1 6249 &code_sec, NULL, FALSE) != (bfd_vma) -1)
64d03ab5
AM		 6250 code_sec->flags |= SEC_KEEP;
6251 }
6252
6253 return TRUE;
6254}
6255
5bd4f169
AM		 6256/* Return the section that should be marked against GC for a given
6257 relocation. */
6258
6259static asection *
4ce794b7 6260ppc64_elf_gc_mark_hook (asection *sec,
fb34365b 6261 struct bfd_link_info *info,
4ce794b7
AM		 6262 Elf_Internal_Rela *rel,
6263 struct elf_link_hash_entry *h,
6264 Elf_Internal_Sym *sym)
5bd4f169 6265{
ccfa59ea
AM		 6266 asection *rsec;
6267
ccfa59ea
AM		 6268 /* Syms return NULL if we're marking .opd, so we avoid marking all
6269 function sections, as all functions are referenced in .opd. */
6270 rsec = NULL;
6271 if (get_opd_info (sec) != NULL)
6272 return rsec;
1e2f5b6e 6273
5bd4f169
AM		 6274 if (h != NULL)
6275 {
04c9666a 6276 enum elf_ppc64_reloc_type r_type;
b31867b6 6277 struct ppc_link_hash_entry *eh, *fh, *fdh;
a33d1f77 6278
4ce794b7 6279 r_type = ELF64_R_TYPE (rel->r_info);
a33d1f77 6280 switch (r_type)
5bd4f169
AM		 6281 {
6282 case R_PPC64_GNU_VTINHERIT:
6283 case R_PPC64_GNU_VTENTRY:
6284 break;
6285
6286 default:
6287 switch (h->root.type)
6288 {
6289 case bfd_link_hash_defined:
6290 case bfd_link_hash_defweak:
ccfa59ea 6291 eh = (struct ppc_link_hash_entry *) h;
b31867b6
AM		 6292 fdh = defined_func_desc (eh);
6293 if (fdh != NULL)
6294 eh = fdh;
1e2f5b6e
AM		 6295
6296 /* Function descriptor syms cause the associated
6297 function code sym section to be marked. */
b31867b6
AM		 6298 fh = defined_code_entry (eh);
6299 if (fh != NULL)
ccfa59ea
AM		 6300 {
6301 /* They also mark their opd section. */
74f0fb50 6302 eh->elf.root.u.def.section->gc_mark = 1;
ccfa59ea 6303
b31867b6 6304 rsec = fh->elf.root.u.def.section;
ccfa59ea 6305 }
8387904d
AM		 6306 else if (get_opd_info (eh->elf.root.u.def.section) != NULL
6307 && opd_entry_value (eh->elf.root.u.def.section,
6308 eh->elf.root.u.def.value,
aef36ac1 6309 &rsec, NULL, FALSE) != (bfd_vma) -1)
74f0fb50 6310 eh->elf.root.u.def.section->gc_mark = 1;
ccfa59ea 6311 else
1e2f5b6e
AM		 6312 rsec = h->root.u.def.section;
6313 break;
5bd4f169
AM		 6314
6315 case bfd_link_hash_common:
1e2f5b6e
AM		 6316 rsec = h->root.u.c.p->section;
6317 break;
5bd4f169
AM		 6318
6319 default:
fb34365b 6320 return _bfd_elf_gc_mark_hook (sec, info, rel, h, sym);
5bd4f169
AM		 6321 }
6322 }
6323 }
6324 else
6325 {
74f0fb50 6326 struct _opd_sec_data *opd;
1e2f5b6e
AM		 6327
6328 rsec = bfd_section_from_elf_index (sec->owner, sym->st_shndx);
74f0fb50
AM		 6329 opd = get_opd_info (rsec);
6330 if (opd != NULL && opd->func_sec != NULL)
ccfa59ea 6331 {
74f0fb50 6332 rsec->gc_mark = 1;
ccfa59ea 6333
74f0fb50 6334 rsec = opd->func_sec[(sym->st_value + rel->r_addend) / 8];
ccfa59ea 6335 }
5bd4f169
AM		 6336 }
6337
1e2f5b6e 6338 return rsec;
5bd4f169
AM		 6339}
6340
65f38f15
AM		 6341/* Update the .got, .plt. and dynamic reloc reference counts for the
6342 section being removed. */
5bd4f169 6343
b34976b6 6344static bfd_boolean
4ce794b7
AM		 6345ppc64_elf_gc_sweep_hook (bfd *abfd, struct bfd_link_info *info,
6346 asection *sec, const Elf_Internal_Rela *relocs)
5bd4f169 6347{
411e1bfb 6348 struct ppc_link_hash_table *htab;
5bd4f169
AM		 6349 Elf_Internal_Shdr *symtab_hdr;
6350 struct elf_link_hash_entry **sym_hashes;
411e1bfb 6351 struct got_entry **local_got_ents;
5bd4f169 6352 const Elf_Internal_Rela *rel, *relend;
5bd4f169 6353
7dda2462
TG		 6354 if (info->relocatable)
6355 return TRUE;
6356
680a3378
AM		 6357 if ((sec->flags & SEC_ALLOC) == 0)
6358 return TRUE;
6359
ec338859
AM		 6360 elf_section_data (sec)->local_dynrel = NULL;
6361
411e1bfb 6362 htab = ppc_hash_table (info);
4dfe6ac6
NC		 6363 if (htab == NULL)
6364 return FALSE;
6365
0ffa91dd 6366 symtab_hdr = &elf_symtab_hdr (abfd);
5bd4f169 6367 sym_hashes = elf_sym_hashes (abfd);
411e1bfb 6368 local_got_ents = elf_local_got_ents (abfd);
5bd4f169
AM		 6369
6370 relend = relocs + sec->reloc_count;
6371 for (rel = relocs; rel < relend; rel++)
a33d1f77
AM		 6372 {
6373 unsigned long r_symndx;
04c9666a 6374 enum elf_ppc64_reloc_type r_type;
58ac9f71 6375 struct elf_link_hash_entry *h = NULL;
f961d9dd 6376 unsigned char tls_type = 0;
5bd4f169 6377
a33d1f77 6378 r_symndx = ELF64_R_SYM (rel->r_info);
4ce794b7 6379 r_type = ELF64_R_TYPE (rel->r_info);
58ac9f71
AM		 6380 if (r_symndx >= symtab_hdr->sh_info)
6381 {
6382 struct ppc_link_hash_entry *eh;
6061a67d
AM		 6383 struct elf_dyn_relocs **pp;
6384 struct elf_dyn_relocs *p;
58ac9f71
AM		 6385
6386 h = sym_hashes[r_symndx - symtab_hdr->sh_info];
b31867b6 6387 h = elf_follow_link (h);
58ac9f71
AM		 6388 eh = (struct ppc_link_hash_entry *) h;
6389
6390 for (pp = &eh->dyn_relocs; (p = *pp) != NULL; pp = &p->next)
6391 if (p->sec == sec)
6392 {
6393 /* Everything must go for SEC. */
6394 *pp = p->next;
6395 break;
6396 }
6397 }
6398
e054468f
AM		 6399 if (is_branch_reloc (r_type))
6400 {
6401 struct plt_entry **ifunc = NULL;
6402 if (h != NULL)
6403 {
6404 if (h->type == STT_GNU_IFUNC)
6405 ifunc = &h->plt.plist;
6406 }
6407 else if (local_got_ents != NULL)
6408 {
6409 struct plt_entry **local_plt = (struct plt_entry **)
6410 (local_got_ents + symtab_hdr->sh_info);
f961d9dd 6411 unsigned char *local_got_tls_masks = (unsigned char *)
e054468f
AM		 6412 (local_plt + symtab_hdr->sh_info);
6413 if ((local_got_tls_masks[r_symndx] & PLT_IFUNC) != 0)
6414 ifunc = local_plt + r_symndx;
6415 }
6416 if (ifunc != NULL)
6417 {
6418 struct plt_entry *ent;
6419
6420 for (ent = *ifunc; ent != NULL; ent = ent->next)
6421 if (ent->addend == rel->r_addend)
6422 break;
6423 if (ent == NULL)
6424 abort ();
6425 if (ent->plt.refcount > 0)
6426 ent->plt.refcount -= 1;
6427 continue;
6428 }
6429 }
6430
a33d1f77
AM		 6431 switch (r_type)
6432 {
411e1bfb
AM		 6433 case R_PPC64_GOT_TLSLD16:
6434 case R_PPC64_GOT_TLSLD16_LO:
6435 case R_PPC64_GOT_TLSLD16_HI:
6436 case R_PPC64_GOT_TLSLD16_HA:
951fd09b 6437 tls_type = TLS_TLS | TLS_LD;
411e1bfb
AM		 6438 goto dogot;
6439
6440 case R_PPC64_GOT_TLSGD16:
6441 case R_PPC64_GOT_TLSGD16_LO:
6442 case R_PPC64_GOT_TLSGD16_HI:
6443 case R_PPC64_GOT_TLSGD16_HA:
951fd09b 6444 tls_type = TLS_TLS | TLS_GD;
411e1bfb
AM		 6445 goto dogot;
6446
6447 case R_PPC64_GOT_TPREL16_DS:
6448 case R_PPC64_GOT_TPREL16_LO_DS:
6449 case R_PPC64_GOT_TPREL16_HI:
6450 case R_PPC64_GOT_TPREL16_HA:
6451 tls_type = TLS_TLS | TLS_TPREL;
6452 goto dogot;
6453
6454 case R_PPC64_GOT_DTPREL16_DS:
6455 case R_PPC64_GOT_DTPREL16_LO_DS:
6456 case R_PPC64_GOT_DTPREL16_HI:
6457 case R_PPC64_GOT_DTPREL16_HA:
6458 tls_type = TLS_TLS | TLS_DTPREL;
6459 goto dogot;
6460
a33d1f77
AM		 6461 case R_PPC64_GOT16:
6462 case R_PPC64_GOT16_DS:
6463 case R_PPC64_GOT16_HA:
6464 case R_PPC64_GOT16_HI:
6465 case R_PPC64_GOT16_LO:
6466 case R_PPC64_GOT16_LO_DS:
411e1bfb
AM		 6467 dogot:
6468 {
6469 struct got_entry *ent;
6470
58ac9f71
AM		 6471 if (h != NULL)
6472 ent = h->got.glist;
411e1bfb
AM		 6473 else
6474 ent = local_got_ents[r_symndx];
6475
6476 for (; ent != NULL; ent = ent->next)
6477 if (ent->addend == rel->r_addend
e717da7e 6478 && ent->owner == abfd
411e1bfb
AM		 6479 && ent->tls_type == tls_type)
6480 break;
6481 if (ent == NULL)
6482 abort ();
6483 if (ent->got.refcount > 0)
6484 ent->got.refcount -= 1;
6485 }
a33d1f77 6486 break;
65f38f15 6487
a33d1f77
AM		 6488 case R_PPC64_PLT16_HA:
6489 case R_PPC64_PLT16_HI:
6490 case R_PPC64_PLT16_LO:
6491 case R_PPC64_PLT32:
6492 case R_PPC64_PLT64:
721956f4
AM		 6493 case R_PPC64_REL14:
6494 case R_PPC64_REL14_BRNTAKEN:
6495 case R_PPC64_REL14_BRTAKEN:
5d1634d7 6496 case R_PPC64_REL24:
58ac9f71 6497 if (h != NULL)
5d1634d7 6498 {
411e1bfb
AM		 6499 struct plt_entry *ent;
6500
411e1bfb
AM		 6501 for (ent = h->plt.plist; ent != NULL; ent = ent->next)
6502 if (ent->addend == rel->r_addend)
6503 break;
7c6c1722 6504 if (ent != NULL && ent->plt.refcount > 0)
411e1bfb 6505 ent->plt.refcount -= 1;
5d1634d7 6506 }
e86ce104 6507 break;
5d1634d7 6508
a33d1f77
AM		 6509 default:
6510 break;
6511 }
6512 }
b34976b6 6513 return TRUE;
5bd4f169
AM		 6514}
6515
deb0e272
AM		 6516/* The maximum size of .sfpr. */
6517#define SFPR_MAX (218*4)
6518
6519struct sfpr_def_parms
6520{
699733f6
AM		 6521 const char name[12];
6522 unsigned char lo, hi;
deb0e272
AM		 6523 bfd_byte * (*write_ent) (bfd *, bfd_byte *, int);
6524 bfd_byte * (*write_tail) (bfd *, bfd_byte *, int);
6525};
6526
6527/* Auto-generate _save*, _rest* functions in .sfpr. */
6528
4dfe6ac6 6529static bfd_boolean
deb0e272
AM		 6530sfpr_define (struct bfd_link_info *info, const struct sfpr_def_parms *parm)
6531{
6532 struct ppc_link_hash_table *htab = ppc_hash_table (info);
6533 unsigned int i;
6534 size_t len = strlen (parm->name);
6535 bfd_boolean writing = FALSE;
699733f6 6536 char sym[16];
deb0e272 6537
4dfe6ac6
NC		 6538 if (htab == NULL)
6539 return FALSE;
6540
deb0e272
AM		 6541 memcpy (sym, parm->name, len);
6542 sym[len + 2] = 0;
6543
6544 for (i = parm->lo; i <= parm->hi; i++)
6545 {
6546 struct elf_link_hash_entry *h;
6547
6548 sym[len + 0] = i / 10 + '0';
6549 sym[len + 1] = i % 10 + '0';
6550 h = elf_link_hash_lookup (&htab->elf, sym, FALSE, FALSE, TRUE);
6551 if (h != NULL
f5385ebf 6552 && !h->def_regular)
deb0e272
AM		 6553 {
6554 h->root.type = bfd_link_hash_defined;
6555 h->root.u.def.section = htab->sfpr;
6556 h->root.u.def.value = htab->sfpr->size;
6557 h->type = STT_FUNC;
f5385ebf 6558 h->def_regular = 1;
deb0e272
AM		 6559 _bfd_elf_link_hash_hide_symbol (info, h, TRUE);
6560 writing = TRUE;
6561 if (htab->sfpr->contents == NULL)
6562 {
6563 htab->sfpr->contents = bfd_alloc (htab->elf.dynobj, SFPR_MAX);
6564 if (htab->sfpr->contents == NULL)
6565 return FALSE;
6566 }
6567 }
6568 if (writing)
6569 {
6570 bfd_byte *p = htab->sfpr->contents + htab->sfpr->size;
6571 if (i != parm->hi)
6572 p = (*parm->write_ent) (htab->elf.dynobj, p, i);
6573 else
6574 p = (*parm->write_tail) (htab->elf.dynobj, p, i);
6575 htab->sfpr->size = p - htab->sfpr->contents;
6576 }
6577 }
6578
6579 return TRUE;
6580}
6581
6582static bfd_byte *
6583savegpr0 (bfd *abfd, bfd_byte *p, int r)
6584{
6585 bfd_put_32 (abfd, STD_R0_0R1 + (r << 21) + (1 << 16) - (32 - r) * 8, p);
6586 return p + 4;
6587}
6588
6589static bfd_byte *
6590savegpr0_tail (bfd *abfd, bfd_byte *p, int r)
6591{
6592 p = savegpr0 (abfd, p, r);
a078d95a 6593 bfd_put_32 (abfd, STD_R0_0R1 + STK_LR, p);
deb0e272
AM		 6594 p = p + 4;
6595 bfd_put_32 (abfd, BLR, p);
6596 return p + 4;
6597}
6598
6599static bfd_byte *
6600restgpr0 (bfd *abfd, bfd_byte *p, int r)
6601{
6602 bfd_put_32 (abfd, LD_R0_0R1 + (r << 21) + (1 << 16) - (32 - r) * 8, p);
6603 return p + 4;
6604}
6605
6606static bfd_byte *
6607restgpr0_tail (bfd *abfd, bfd_byte *p, int r)
6608{
a078d95a 6609 bfd_put_32 (abfd, LD_R0_0R1 + STK_LR, p);
deb0e272
AM		 6610 p = p + 4;
6611 p = restgpr0 (abfd, p, r);
6612 bfd_put_32 (abfd, MTLR_R0, p);
6613 p = p + 4;
6614 if (r == 29)
6615 {
6616 p = restgpr0 (abfd, p, 30);
6617 p = restgpr0 (abfd, p, 31);
6618 }
6619 bfd_put_32 (abfd, BLR, p);
6620 return p + 4;
6621}
6622
6623static bfd_byte *
6624savegpr1 (bfd *abfd, bfd_byte *p, int r)
6625{
6626 bfd_put_32 (abfd, STD_R0_0R12 + (r << 21) + (1 << 16) - (32 - r) * 8, p);
6627 return p + 4;
6628}
6629
6630static bfd_byte *
6631savegpr1_tail (bfd *abfd, bfd_byte *p, int r)
6632{
6633 p = savegpr1 (abfd, p, r);
6634 bfd_put_32 (abfd, BLR, p);
6635 return p + 4;
6636}
6637
6638static bfd_byte *
6639restgpr1 (bfd *abfd, bfd_byte *p, int r)
6640{
6641 bfd_put_32 (abfd, LD_R0_0R12 + (r << 21) + (1 << 16) - (32 - r) * 8, p);
6642 return p + 4;
6643}
6644
6645static bfd_byte *
6646restgpr1_tail (bfd *abfd, bfd_byte *p, int r)
6647{
6648 p = restgpr1 (abfd, p, r);
6649 bfd_put_32 (abfd, BLR, p);
6650 return p + 4;
6651}
6652
6653static bfd_byte *
6654savefpr (bfd *abfd, bfd_byte *p, int r)
6655{
6656 bfd_put_32 (abfd, STFD_FR0_0R1 + (r << 21) + (1 << 16) - (32 - r) * 8, p);
6657 return p + 4;
6658}
6659
6660static bfd_byte *
6661savefpr0_tail (bfd *abfd, bfd_byte *p, int r)
6662{
6663 p = savefpr (abfd, p, r);
a078d95a 6664 bfd_put_32 (abfd, STD_R0_0R1 + STK_LR, p);
deb0e272
AM		 6665 p = p + 4;
6666 bfd_put_32 (abfd, BLR, p);
6667 return p + 4;
6668}
6669
6670static bfd_byte *
6671restfpr (bfd *abfd, bfd_byte *p, int r)
6672{
6673 bfd_put_32 (abfd, LFD_FR0_0R1 + (r << 21) + (1 << 16) - (32 - r) * 8, p);
6674 return p + 4;
6675}
6676
6677static bfd_byte *
6678restfpr0_tail (bfd *abfd, bfd_byte *p, int r)
6679{
a078d95a 6680 bfd_put_32 (abfd, LD_R0_0R1 + STK_LR, p);
deb0e272
AM		 6681 p = p + 4;
6682 p = restfpr (abfd, p, r);
6683 bfd_put_32 (abfd, MTLR_R0, p);
6684 p = p + 4;
6685 if (r == 29)
6686 {
6687 p = restfpr (abfd, p, 30);
6688 p = restfpr (abfd, p, 31);
6689 }
6690 bfd_put_32 (abfd, BLR, p);
6691 return p + 4;
6692}
6693
6694static bfd_byte *
6695savefpr1_tail (bfd *abfd, bfd_byte *p, int r)
6696{
6697 p = savefpr (abfd, p, r);
6698 bfd_put_32 (abfd, BLR, p);
6699 return p + 4;
6700}
6701
6702static bfd_byte *
6703restfpr1_tail (bfd *abfd, bfd_byte *p, int r)
6704{
6705 p = restfpr (abfd, p, r);
6706 bfd_put_32 (abfd, BLR, p);
6707 return p + 4;
6708}
6709
6710static bfd_byte *
6711savevr (bfd *abfd, bfd_byte *p, int r)
6712{
6713 bfd_put_32 (abfd, LI_R12_0 + (1 << 16) - (32 - r) * 16, p);
6714 p = p + 4;
6715 bfd_put_32 (abfd, STVX_VR0_R12_R0 + (r << 21), p);
6716 return p + 4;
6717}
6718
6719static bfd_byte *
6720savevr_tail (bfd *abfd, bfd_byte *p, int r)
6721{
6722 p = savevr (abfd, p, r);
6723 bfd_put_32 (abfd, BLR, p);
6724 return p + 4;
6725}
6726
6727static bfd_byte *
6728restvr (bfd *abfd, bfd_byte *p, int r)
6729{
6730 bfd_put_32 (abfd, LI_R12_0 + (1 << 16) - (32 - r) * 16, p);
6731 p = p + 4;
6732 bfd_put_32 (abfd, LVX_VR0_R12_R0 + (r << 21), p);
6733 return p + 4;
6734}
6735
6736static bfd_byte *
6737restvr_tail (bfd *abfd, bfd_byte *p, int r)
6738{
6739 p = restvr (abfd, p, r);
6740 bfd_put_32 (abfd, BLR, p);
6741 return p + 4;
6742}
6743
e86ce104
AM		 6744/* Called via elf_link_hash_traverse to transfer dynamic linking
6745 information on function code symbol entries to their corresponding
6746 function descriptor symbol entries. */
deb0e272 6747
b34976b6 6748static bfd_boolean
4ce794b7 6749func_desc_adjust (struct elf_link_hash_entry *h, void *inf)
5bd4f169 6750{
e86ce104 6751 struct bfd_link_info *info;
65f38f15 6752 struct ppc_link_hash_table *htab;
411e1bfb 6753 struct plt_entry *ent;
50bc7936
AM		 6754 struct ppc_link_hash_entry *fh;
6755 struct ppc_link_hash_entry *fdh;
6756 bfd_boolean force_local;
5bd4f169 6757
50bc7936
AM		 6758 fh = (struct ppc_link_hash_entry *) h;
6759 if (fh->elf.root.type == bfd_link_hash_indirect)
b34976b6 6760 return TRUE;
e86ce104 6761
4ce794b7 6762 info = inf;
65f38f15 6763 htab = ppc_hash_table (info);
4dfe6ac6
NC		 6764 if (htab == NULL)
6765 return FALSE;
5bd4f169 6766
c09bdfe5
AM		 6767 /* Resolve undefined references to dot-symbols as the value
6768 in the function descriptor, if we have one in a regular object.
6769 This is to satisfy cases like ".quad .foo". Calls to functions
6770 in dynamic objects are handled elsewhere. */
6771 if (fh->elf.root.type == bfd_link_hash_undefweak
6772 && fh->was_undefined
b31867b6
AM		 6773 && (fdh = defined_func_desc (fh)) != NULL
6774 && get_opd_info (fdh->elf.root.u.def.section) != NULL
6775 && opd_entry_value (fdh->elf.root.u.def.section,
6776 fdh->elf.root.u.def.value,
c09bdfe5 6777 &fh->elf.root.u.def.section,
aef36ac1 6778 &fh->elf.root.u.def.value, FALSE) != (bfd_vma) -1)
c09bdfe5 6779 {
b31867b6 6780 fh->elf.root.type = fdh->elf.root.type;
f5385ebf 6781 fh->elf.forced_local = 1;
b31867b6
AM		 6782 fh->elf.def_regular = fdh->elf.def_regular;
6783 fh->elf.def_dynamic = fdh->elf.def_dynamic;
c09bdfe5
AM		 6784 }
6785
e86ce104
AM		 6786 /* If this is a function code symbol, transfer dynamic linking
6787 information to the function descriptor symbol. */
50bc7936 6788 if (!fh->is_func)
b34976b6 6789 return TRUE;
e86ce104 6790
50bc7936 6791 for (ent = fh->elf.plt.plist; ent != NULL; ent = ent->next)
411e1bfb
AM		 6792 if (ent->plt.refcount > 0)
6793 break;
50bc7936
AM		 6794 if (ent == NULL
6795 || fh->elf.root.root.string[0] != '.'
6796 || fh->elf.root.root.string[1] == '\0')
6797 return TRUE;
5bd4f169 6798
50bc7936
AM		 6799 /* Find the corresponding function descriptor symbol. Create it
6800 as undefined if necessary. */
5bd4f169 6801
b31867b6 6802 fdh = lookup_fdh (fh, htab);
50bc7936 6803 if (fdh == NULL
df131623 6804 && !info->executable
50bc7936
AM		 6805 && (fh->elf.root.type == bfd_link_hash_undefined
6806 || fh->elf.root.type == bfd_link_hash_undefweak))
6807 {
908b32fc 6808 fdh = make_fdh (info, fh);
bb700d78
AM		 6809 if (fdh == NULL)
6810 return FALSE;
50bc7936 6811 }
648cca2c 6812
908b32fc 6813 /* Fake function descriptors are made undefweak. If the function
433817dd
AM		 6814 code symbol is strong undefined, make the fake sym the same.
6815 If the function code symbol is defined, then force the fake
6816 descriptor local; We can't support overriding of symbols in a
6817 shared library on a fake descriptor. */
908b32fc
AM		 6818
6819 if (fdh != NULL
6820 && fdh->fake
433817dd 6821 && fdh->elf.root.type == bfd_link_hash_undefweak)
908b32fc 6822 {
433817dd
AM		 6823 if (fh->elf.root.type == bfd_link_hash_undefined)
6824 {
6825 fdh->elf.root.type = bfd_link_hash_undefined;
6826 bfd_link_add_undef (&htab->elf.root, &fdh->elf.root);
6827 }
6828 else if (fh->elf.root.type == bfd_link_hash_defined
6829 || fh->elf.root.type == bfd_link_hash_defweak)
6830 {
6831 _bfd_elf_link_hash_hide_symbol (info, &fdh->elf, TRUE);
6832 }
908b32fc
AM		 6833 }
6834
50bc7936 6835 if (fdh != NULL
f5385ebf 6836 && !fdh->elf.forced_local
df131623 6837 && (!info->executable
f5385ebf
AM		 6838 || fdh->elf.def_dynamic
6839 || fdh->elf.ref_dynamic
50bc7936
AM		 6840 || (fdh->elf.root.type == bfd_link_hash_undefweak
6841 && ELF_ST_VISIBILITY (fdh->elf.other) == STV_DEFAULT)))
6842 {
6843 if (fdh->elf.dynindx == -1)
c152c796 6844 if (! bfd_elf_link_record_dynamic_symbol (info, &fdh->elf))
50bc7936 6845 return FALSE;
f5385ebf
AM		 6846 fdh->elf.ref_regular |= fh->elf.ref_regular;
6847 fdh->elf.ref_dynamic |= fh->elf.ref_dynamic;
6848 fdh->elf.ref_regular_nonweak |= fh->elf.ref_regular_nonweak;
6849 fdh->elf.non_got_ref |= fh->elf.non_got_ref;
50bc7936 6850 if (ELF_ST_VISIBILITY (fh->elf.other) == STV_DEFAULT)
e86ce104 6851 {
40d16e0b 6852 move_plt_plist (fh, fdh);
f5385ebf 6853 fdh->elf.needs_plt = 1;
e86ce104 6854 }
50bc7936 6855 fdh->is_func_descriptor = 1;
34814b9f
AM		 6856 fdh->oh = fh;
6857 fh->oh = fdh;
e86ce104
AM		 6858 }
6859
50bc7936
AM		 6860 /* Now that the info is on the function descriptor, clear the
6861 function code sym info. Any function code syms for which we
6862 don't have a definition in a regular file, we force local.
6863 This prevents a shared library from exporting syms that have
6864 been imported from another library. Function code syms that
6865 are really in the library we must leave global to prevent the
6866 linker dragging in a definition from a static library. */
93f3fa99
AM		 6867 force_local = (!fh->elf.def_regular
6868 || fdh == NULL
6869 || !fdh->elf.def_regular
6870 || fdh->elf.forced_local);
50bc7936
AM		 6871 _bfd_elf_link_hash_hide_symbol (info, &fh->elf, force_local);
6872
b34976b6 6873 return TRUE;
e86ce104 6874}
40b8271b 6875
e86ce104 6876/* Called near the start of bfd_elf_size_dynamic_sections. We use
82bd7b59
AM		 6877 this hook to a) provide some gcc support functions, and b) transfer
6878 dynamic linking information gathered so far on function code symbol
6879 entries, to their corresponding function descriptor symbol entries. */
deb0e272 6880
b34976b6 6881static bfd_boolean
4ce794b7
AM		 6882ppc64_elf_func_desc_adjust (bfd *obfd ATTRIBUTE_UNUSED,
6883 struct bfd_link_info *info)
e86ce104
AM		 6884{
6885 struct ppc_link_hash_table *htab;
82bd7b59 6886 unsigned int i;
27fc25a1 6887 static const struct sfpr_def_parms funcs[] =
deb0e272
AM		 6888 {
6889 { "_savegpr0_", 14, 31, savegpr0, savegpr0_tail },
6890 { "_restgpr0_", 14, 29, restgpr0, restgpr0_tail },
6891 { "_restgpr0_", 30, 31, restgpr0, restgpr0_tail },
6892 { "_savegpr1_", 14, 31, savegpr1, savegpr1_tail },
6893 { "_restgpr1_", 14, 31, restgpr1, restgpr1_tail },
6894 { "_savefpr_", 14, 31, savefpr, savefpr0_tail },
6895 { "_restfpr_", 14, 29, restfpr, restfpr0_tail },
6896 { "_restfpr_", 30, 31, restfpr, restfpr0_tail },
6897 { "._savef", 14, 31, savefpr, savefpr1_tail },
6898 { "._restf", 14, 31, restfpr, restfpr1_tail },
6899 { "_savevr_", 20, 31, savevr, savevr_tail },
6900 { "_restvr_", 20, 31, restvr, restvr_tail }
6901 };
e86ce104
AM		 6902
6903 htab = ppc_hash_table (info);
4dfe6ac6
NC		 6904 if (htab == NULL)
6905 return FALSE;
6906
5295321c
AM		 6907 if (!info->relocatable
6908 && htab->elf.hgot != NULL)
dba6fa9b
AM		 6909 {
6910 _bfd_elf_link_hash_hide_symbol (info, htab->elf.hgot, TRUE);
6911 /* Make .TOC. defined so as to prevent it being made dynamic.
6912 The wrong value here is fixed later in ppc64_elf_set_toc. */
6913 htab->elf.hgot->type = STT_OBJECT;
6914 htab->elf.hgot->root.type = bfd_link_hash_defined;
6915 htab->elf.hgot->root.u.def.value = 0;
6916 htab->elf.hgot->root.u.def.section = bfd_abs_section_ptr;
6917 htab->elf.hgot->def_regular = 1;
6918 htab->elf.hgot->other = ((htab->elf.hgot->other & ~ELF_ST_VISIBILITY (-1))
6919 | STV_HIDDEN);
6920 }
c66bb0ee 6921
82bd7b59
AM		 6922 if (htab->sfpr == NULL)
6923 /* We don't have any relocs. */
b34976b6 6924 return TRUE;
82bd7b59 6925
deb0e272
AM		 6926 /* Provide any missing _save* and _rest* functions. */
6927 htab->sfpr->size = 0;
7d4c687d 6928 if (htab->params->save_restore_funcs)
27fc25a1
AM		 6929 for (i = 0; i < sizeof (funcs) / sizeof (funcs[0]); i++)
6930 if (!sfpr_define (info, &funcs[i]))
6931 return FALSE;
82bd7b59 6932
4ce794b7 6933 elf_link_hash_traverse (&htab->elf, func_desc_adjust, info);
805fc799 6934
eea6121a 6935 if (htab->sfpr->size == 0)
8423293d 6936 htab->sfpr->flags |= SEC_EXCLUDE;
82bd7b59 6937
b34976b6 6938 return TRUE;
e86ce104
AM		 6939}
6940
a345bc8d
AM		 6941/* Return true if we have dynamic relocs that apply to read-only sections. */
6942
6943static bfd_boolean
6944readonly_dynrelocs (struct elf_link_hash_entry *h)
6945{
6946 struct ppc_link_hash_entry *eh;
6947 struct elf_dyn_relocs *p;
6948
6949 eh = (struct ppc_link_hash_entry *) h;
6950 for (p = eh->dyn_relocs; p != NULL; p = p->next)
6951 {
6952 asection *s = p->sec->output_section;
6953
6954 if (s != NULL && (s->flags & SEC_READONLY) != 0)
6955 return TRUE;
6956 }
6957 return FALSE;
6958}
6959
e86ce104
AM		 6960/* Adjust a symbol defined by a dynamic object and referenced by a
6961 regular object. The current definition is in some section of the
6962 dynamic object, but we're not including those sections. We have to
6963 change the definition to something the rest of the link can
6964 understand. */
6965
b34976b6 6966static bfd_boolean
4ce794b7
AM		 6967ppc64_elf_adjust_dynamic_symbol (struct bfd_link_info *info,
6968 struct elf_link_hash_entry *h)
e86ce104
AM		 6969{
6970 struct ppc_link_hash_table *htab;
e86ce104 6971 asection *s;
e86ce104
AM		 6972
6973 htab = ppc_hash_table (info);
4dfe6ac6
NC		 6974 if (htab == NULL)
6975 return FALSE;
e86ce104
AM		 6976
6977 /* Deal with function syms. */
6978 if (h->type == STT_FUNC
e054468f 6979 || h->type == STT_GNU_IFUNC
f5385ebf 6980 || h->needs_plt)
e86ce104
AM		 6981 {
6982 /* Clear procedure linkage table information for any symbol that
6983 won't need a .plt entry. */
411e1bfb
AM		 6984 struct plt_entry *ent;
6985 for (ent = h->plt.plist; ent != NULL; ent = ent->next)
6986 if (ent->plt.refcount > 0)
6987 break;
8387904d 6988 if (ent == NULL
e054468f
AM		 6989 || (h->type != STT_GNU_IFUNC
6990 && (SYMBOL_CALLS_LOCAL (info, h)
6991 || (ELF_ST_VISIBILITY (h->other) != STV_DEFAULT
6992 && h->root.type == bfd_link_hash_undefweak))))
40b8271b 6993 {
411e1bfb 6994 h->plt.plist = NULL;
f5385ebf 6995 h->needs_plt = 0;
d1eca1e4 6996 h->pointer_equality_needed = 0;
40b8271b 6997 }
a345bc8d
AM		 6998 else if (abiversion (info->output_bfd) == 2)
6999 {
d1eca1e4
AM		 7000 /* Taking a function's address in a read/write section
7001 doesn't require us to define the function symbol in the
7002 executable on a global entry stub. A dynamic reloc can
7003 be used instead. */
7004 if (h->pointer_equality_needed
1009ef28 7005 && h->type != STT_GNU_IFUNC
d1eca1e4
AM		 7006 && !readonly_dynrelocs (h))
7007 {
7008 h->pointer_equality_needed = 0;
7009 h->non_got_ref = 0;
7010 }
7011
a345bc8d
AM		 7012 /* After adjust_dynamic_symbol, non_got_ref set in the
7013 non-shared case means that we have allocated space in
7014 .dynbss for the symbol and thus dyn_relocs for this
7015 symbol should be discarded.
7016 If we get here we know we are making a PLT entry for this
7017 symbol, and in an executable we'd normally resolve
7018 relocations against this symbol to the PLT entry. Allow
7019 dynamic relocs if the reference is weak, and the dynamic
7020 relocs will not cause text relocation. */
d1eca1e4
AM		 7021 else if (!h->ref_regular_nonweak
7022 && h->non_got_ref
7023 && h->type != STT_GNU_IFUNC
7024 && !readonly_dynrelocs (h))
a345bc8d
AM		 7025 h->non_got_ref = 0;
7026
7027 /* If making a plt entry, then we don't need copy relocs. */
7028 return TRUE;
7029 }
5bd4f169 7030 }
bbd7ec4a 7031 else
411e1bfb 7032 h->plt.plist = NULL;
5bd4f169
AM		 7033
7034 /* If this is a weak symbol, and there is a real definition, the
7035 processor independent code will have arranged for us to see the
7036 real definition first, and we can just use the same value. */
f6e332e6 7037 if (h->u.weakdef != NULL)
5bd4f169 7038 {
f6e332e6
AM		 7039 BFD_ASSERT (h->u.weakdef->root.type == bfd_link_hash_defined
7040 || h->u.weakdef->root.type == bfd_link_hash_defweak);
7041 h->root.u.def.section = h->u.weakdef->root.u.def.section;
7042 h->root.u.def.value = h->u.weakdef->root.u.def.value;
a23b6845 7043 if (ELIMINATE_COPY_RELOCS)
f6e332e6 7044 h->non_got_ref = h->u.weakdef->non_got_ref;
b34976b6 7045 return TRUE;
5bd4f169
AM		 7046 }
7047
5bd4f169
AM		 7048 /* If we are creating a shared library, we must presume that the
7049 only references to the symbol are via the global offset table.
7050 For such cases we need not do anything here; the relocations will
7051 be handled correctly by relocate_section. */
7052 if (info->shared)
b34976b6 7053 return TRUE;
5bd4f169 7054
65f38f15
AM		 7055 /* If there are no references to this symbol that do not use the
7056 GOT, we don't need to generate a copy reloc. */
f5385ebf 7057 if (!h->non_got_ref)
b34976b6 7058 return TRUE;
65f38f15 7059
b186458a
JJ		 7060 /* Don't generate a copy reloc for symbols defined in the executable. */
7061 if (!h->def_dynamic || !h->ref_regular || h->def_regular)
7062 return TRUE;
7063
a345bc8d
AM		 7064 /* If we didn't find any dynamic relocs in read-only sections, then
7065 we'll be keeping the dynamic relocs and avoiding the copy reloc. */
7066 if (ELIMINATE_COPY_RELOCS && !readonly_dynrelocs (h))
65f38f15 7067 {
a345bc8d
AM		 7068 h->non_got_ref = 0;
7069 return TRUE;
65f38f15
AM		 7070 }
7071
5d35169e 7072 if (h->plt.plist != NULL)
97b639ba
AM		 7073 {
7074 /* We should never get here, but unfortunately there are versions
7075 of gcc out there that improperly (for this ABI) put initialized
7076 function pointers, vtable refs and suchlike in read-only
7077 sections. Allow them to proceed, but warn that this might
7078 break at runtime. */
25f53a85 7079 info->callbacks->einfo
bc30df16 7080 (_("%P: copy reloc against `%T' requires lazy plt linking; "
25f53a85 7081 "avoid setting LD_BIND_NOW=1 or upgrade gcc\n"),
97b639ba
AM		 7082 h->root.root.string);
7083 }
5d35169e
AM		 7084
7085 /* This is a reference to a symbol defined by a dynamic object which
7086 is not a function. */
7087
5bd4f169
AM		 7088 /* We must allocate the symbol in our .dynbss section, which will
7089 become part of the .bss section of the executable. There will be
7090 an entry for this symbol in the .dynsym section. The dynamic
7091 object will contain position independent code, so all references
7092 from the dynamic object to this symbol will go through the global
7093 offset table. The dynamic linker will use the .dynsym entry to
7094 determine the address it must put in the global offset table, so
7095 both the dynamic object and the regular object will refer to the
7096 same memory location for the variable. */
5bd4f169 7097
04c9666a
AM		 7098 /* We must generate a R_PPC64_COPY reloc to tell the dynamic linker
7099 to copy the initial value out of the dynamic object and into the
5bd4f169
AM		 7100 runtime process image. We need to remember the offset into the
7101 .rela.bss section we are going to use. */
1d7e9d18 7102 if ((h->root.u.def.section->flags & SEC_ALLOC) != 0 && h->size != 0)
5bd4f169 7103 {
eea6121a 7104 htab->relbss->size += sizeof (Elf64_External_Rela);
f5385ebf 7105 h->needs_copy = 1;
5bd4f169
AM		 7106 }
7107
4ce794b7 7108 s = htab->dynbss;
5bd4f169 7109
027297b7 7110 return _bfd_elf_adjust_dynamic_copy (h, s);
5bd4f169
AM		 7111}
7112
e86ce104
AM		 7113/* If given a function descriptor symbol, hide both the function code
7114 sym and the descriptor. */
7115static void
4ce794b7
AM		 7116ppc64_elf_hide_symbol (struct bfd_link_info *info,
7117 struct elf_link_hash_entry *h,
7118 bfd_boolean force_local)
e86ce104 7119{
34814b9f 7120 struct ppc_link_hash_entry *eh;
e86ce104
AM		 7121 _bfd_elf_link_hash_hide_symbol (info, h, force_local);
7122
34814b9f
AM		 7123 eh = (struct ppc_link_hash_entry *) h;
7124 if (eh->is_func_descriptor)
e86ce104 7125 {
34814b9f 7126 struct ppc_link_hash_entry *fh = eh->oh;
e86ce104 7127
721956f4 7128 if (fh == NULL)
d1329ca3
AM		 7129 {
7130 const char *p, *q;
7131 struct ppc_link_hash_table *htab;
7132 char save;
7133
7134 /* We aren't supposed to use alloca in BFD because on
7135 systems which do not have alloca the version in libiberty
7136 calls xmalloc, which might cause the program to crash
7137 when it runs out of memory. This function doesn't have a
7138 return status, so there's no way to gracefully return an
7139 error. So cheat. We know that string[-1] can be safely
34814b9f
AM		 7140 accessed; It's either a string in an ELF string table,
7141 or allocated in an objalloc structure. */
d1329ca3 7142
34814b9f 7143 p = eh->elf.root.root.string - 1;
d1329ca3
AM		 7144 save = *p;
7145 *(char *) p = '.';
7146 htab = ppc_hash_table (info);
4dfe6ac6
NC		 7147 if (htab == NULL)
7148 return;
7149
34814b9f
AM		 7150 fh = (struct ppc_link_hash_entry *)
7151 elf_link_hash_lookup (&htab->elf, p, FALSE, FALSE, FALSE);
d1329ca3
AM		 7152 *(char *) p = save;
7153
7154 /* Unfortunately, if it so happens that the string we were
7155 looking for was allocated immediately before this string,
7156 then we overwrote the string terminator. That's the only
7157 reason the lookup should fail. */
7158 if (fh == NULL)
7159 {
34814b9f
AM		 7160 q = eh->elf.root.root.string + strlen (eh->elf.root.root.string);
7161 while (q >= eh->elf.root.root.string && *q == *p)
d1329ca3 7162 --q, --p;
34814b9f
AM		 7163 if (q < eh->elf.root.root.string && *p == '.')
7164 fh = (struct ppc_link_hash_entry *)
7165 elf_link_hash_lookup (&htab->elf, p, FALSE, FALSE, FALSE);
d1329ca3
AM		 7166 }
7167 if (fh != NULL)
7168 {
34814b9f
AM		 7169 eh->oh = fh;
7170 fh->oh = eh;
d1329ca3
AM		 7171 }
7172 }
e86ce104 7173 if (fh != NULL)
34814b9f 7174 _bfd_elf_link_hash_hide_symbol (info, &fh->elf, force_local);
e86ce104
AM		 7175 }
7176}
7177
411e1bfb 7178static bfd_boolean
8843416a
AM		 7179get_sym_h (struct elf_link_hash_entry **hp,
7180 Elf_Internal_Sym **symp,
7181 asection **symsecp,
f961d9dd 7182 unsigned char **tls_maskp,
8843416a
AM		 7183 Elf_Internal_Sym **locsymsp,
7184 unsigned long r_symndx,
7185 bfd *ibfd)
411e1bfb 7186{
0ffa91dd 7187 Elf_Internal_Shdr *symtab_hdr = &elf_symtab_hdr (ibfd);
411e1bfb
AM		 7188
7189 if (r_symndx >= symtab_hdr->sh_info)
7190 {
7191 struct elf_link_hash_entry **sym_hashes = elf_sym_hashes (ibfd);
7192 struct elf_link_hash_entry *h;
7193
7194 h = sym_hashes[r_symndx - symtab_hdr->sh_info];
b31867b6 7195 h = elf_follow_link (h);
411e1bfb
AM		 7196
7197 if (hp != NULL)
7198 *hp = h;
7199
7200 if (symp != NULL)
7201 *symp = NULL;
7202
7203 if (symsecp != NULL)
7204 {
7205 asection *symsec = NULL;
7206 if (h->root.type == bfd_link_hash_defined
7207 || h->root.type == bfd_link_hash_defweak)
7208 symsec = h->root.u.def.section;
7209 *symsecp = symsec;
7210 }
7211
e7b938ca 7212 if (tls_maskp != NULL)
411e1bfb
AM		 7213 {
7214 struct ppc_link_hash_entry *eh;
7215
7216 eh = (struct ppc_link_hash_entry *) h;
e7b938ca 7217 *tls_maskp = &eh->tls_mask;
411e1bfb
AM		 7218 }
7219 }
7220 else
7221 {
7222 Elf_Internal_Sym *sym;
7223 Elf_Internal_Sym *locsyms = *locsymsp;
7224
7225 if (locsyms == NULL)
7226 {
7227 locsyms = (Elf_Internal_Sym *) symtab_hdr->contents;
7228 if (locsyms == NULL)
7229 locsyms = bfd_elf_get_elf_syms (ibfd, symtab_hdr,
7230 symtab_hdr->sh_info,
7231 0, NULL, NULL, NULL);
7232 if (locsyms == NULL)
7233 return FALSE;
7234 *locsymsp = locsyms;
7235 }
7236 sym = locsyms + r_symndx;
7237
7238 if (hp != NULL)
7239 *hp = NULL;
7240
7241 if (symp != NULL)
7242 *symp = sym;
7243
7244 if (symsecp != NULL)
cb33740c 7245 *symsecp = bfd_section_from_elf_index (ibfd, sym->st_shndx);
411e1bfb 7246
e7b938ca 7247 if (tls_maskp != NULL)
411e1bfb
AM		 7248 {
7249 struct got_entry **lgot_ents;
f961d9dd 7250 unsigned char *tls_mask;
411e1bfb 7251
e7b938ca 7252 tls_mask = NULL;
411e1bfb
AM		 7253 lgot_ents = elf_local_got_ents (ibfd);
7254 if (lgot_ents != NULL)
7255 {
e054468f
AM		 7256 struct plt_entry **local_plt = (struct plt_entry **)
7257 (lgot_ents + symtab_hdr->sh_info);
f961d9dd 7258 unsigned char *lgot_masks = (unsigned char *)
e054468f 7259 (local_plt + symtab_hdr->sh_info);
e7b938ca 7260 tls_mask = &lgot_masks[r_symndx];
411e1bfb 7261 }
e7b938ca 7262 *tls_maskp = tls_mask;
411e1bfb
AM		 7263 }
7264 }
7265 return TRUE;
7266}
7267
e7b938ca 7268/* Returns TLS_MASKP for the given REL symbol. Function return is 0 on
951fd09b 7269 error, 2 on a toc GD type suitable for optimization, 3 on a toc LD
ad8e1ba5 7270 type suitable for optimization, and 1 otherwise. */
951fd09b
AM		 7271
7272static int
f961d9dd 7273get_tls_mask (unsigned char **tls_maskp,
3a71aa26
AM		 7274 unsigned long *toc_symndx,
7275 bfd_vma *toc_addend,
0d4792f7 7276 Elf_Internal_Sym **locsymsp,
3a71aa26
AM		 7277 const Elf_Internal_Rela *rel,
7278 bfd *ibfd)
411e1bfb
AM		 7279{
7280 unsigned long r_symndx;
0d4792f7 7281 int next_r;
411e1bfb
AM		 7282 struct elf_link_hash_entry *h;
7283 Elf_Internal_Sym *sym;
7284 asection *sec;
7285 bfd_vma off;
7286
7287 r_symndx = ELF64_R_SYM (rel->r_info);
e7b938ca 7288 if (!get_sym_h (&h, &sym, &sec, tls_maskp, locsymsp, r_symndx, ibfd))
951fd09b 7289 return 0;
411e1bfb 7290
e7b938ca 7291 if ((*tls_maskp != NULL && **tls_maskp != 0)
411e1bfb 7292 || sec == NULL
6bee8834 7293 || ppc64_elf_section_data (sec) == NULL
7c8fe5c4 7294 || ppc64_elf_section_data (sec)->sec_type != sec_toc)
951fd09b 7295 return 1;
411e1bfb
AM		 7296
7297 /* Look inside a TOC section too. */
7298 if (h != NULL)
7299 {
7300 BFD_ASSERT (h->root.type == bfd_link_hash_defined);
7301 off = h->root.u.def.value;
7302 }
7303 else
7304 off = sym->st_value;
7305 off += rel->r_addend;
7306 BFD_ASSERT (off % 8 == 0);
3a71aa26
AM		 7307 r_symndx = ppc64_elf_section_data (sec)->u.toc.symndx[off / 8];
7308 next_r = ppc64_elf_section_data (sec)->u.toc.symndx[off / 8 + 1];
0d4792f7
AM		 7309 if (toc_symndx != NULL)
7310 *toc_symndx = r_symndx;
3a71aa26
AM		 7311 if (toc_addend != NULL)
7312 *toc_addend = ppc64_elf_section_data (sec)->u.toc.add[off / 8];
7313 if (!get_sym_h (&h, &sym, &sec, tls_maskp, locsymsp, r_symndx, ibfd))
7314 return 0;
854b41e7 7315 if ((h == NULL || is_static_defined (h))
0d4792f7
AM		 7316 && (next_r == -1 || next_r == -2))
7317 return 1 - next_r;
951fd09b 7318 return 1;
411e1bfb
AM		 7319}
7320
3b421ab3
AM		 7321/* Find (or create) an entry in the tocsave hash table. */
7322
7323static struct tocsave_entry *
7324tocsave_find (struct ppc_link_hash_table *htab,
7325 enum insert_option insert,
7326 Elf_Internal_Sym **local_syms,
7327 const Elf_Internal_Rela *irela,
7328 bfd *ibfd)
7329{
7330 unsigned long r_indx;
7331 struct elf_link_hash_entry *h;
7332 Elf_Internal_Sym *sym;
7333 struct tocsave_entry ent, *p;
7334 hashval_t hash;
7335 struct tocsave_entry **slot;
7336
7337 r_indx = ELF64_R_SYM (irela->r_info);
7338 if (!get_sym_h (&h, &sym, &ent.sec, NULL, local_syms, r_indx, ibfd))
7339 return NULL;
7340 if (ent.sec == NULL || ent.sec->output_section == NULL)
7341 {
7342 (*_bfd_error_handler)
7343 (_("%B: undefined symbol on R_PPC64_TOCSAVE relocation"));
7344 return NULL;
7345 }
7346
7347 if (h != NULL)
7348 ent.offset = h->root.u.def.value;
7349 else
7350 ent.offset = sym->st_value;
7351 ent.offset += irela->r_addend;
7352
7353 hash = tocsave_htab_hash (&ent);
7354 slot = ((struct tocsave_entry **)
7355 htab_find_slot_with_hash (htab->tocsave_htab, &ent, hash, insert));
7356 if (slot == NULL)
7357 return NULL;
7358
7359 if (*slot == NULL)
7360 {
7361 p = (struct tocsave_entry *) bfd_alloc (ibfd, sizeof (*p));
7362 if (p == NULL)
7363 return NULL;
7364 *p = ent;
7365 *slot = p;
7366 }
7367 return *slot;
7368}
7369
754021d0 7370/* Adjust all global syms defined in opd sections. In gcc generated
8387904d 7371 code for the old ABI, these will already have been done. */
754021d0
AM		 7372
7373static bfd_boolean
7374adjust_opd_syms (struct elf_link_hash_entry *h, void *inf ATTRIBUTE_UNUSED)
7375{
7376 struct ppc_link_hash_entry *eh;
7377 asection *sym_sec;
74f0fb50 7378 struct _opd_sec_data *opd;
754021d0
AM		 7379
7380 if (h->root.type == bfd_link_hash_indirect)
7381 return TRUE;
7382
754021d0
AM		 7383 if (h->root.type != bfd_link_hash_defined
7384 && h->root.type != bfd_link_hash_defweak)
7385 return TRUE;
7386
7387 eh = (struct ppc_link_hash_entry *) h;
7388 if (eh->adjust_done)
7389 return TRUE;
7390
7391 sym_sec = eh->elf.root.u.def.section;
74f0fb50
AM		 7392 opd = get_opd_info (sym_sec);
7393 if (opd != NULL && opd->adjust != NULL)
754021d0 7394 {
74f0fb50 7395 long adjust = opd->adjust[eh->elf.root.u.def.value / 8];
4025353c
AM		 7396 if (adjust == -1)
7397 {
7398 /* This entry has been deleted. */
b3fac117 7399 asection *dsec = ppc64_elf_tdata (sym_sec->owner)->deleted_section;
81688140
AM		 7400 if (dsec == NULL)
7401 {
7402 for (dsec = sym_sec->owner->sections; dsec; dsec = dsec->next)
dbaa2011 7403 if (discarded_section (dsec))
81688140 7404 {
b3fac117 7405 ppc64_elf_tdata (sym_sec->owner)->deleted_section = dsec;
81688140
AM		 7406 break;
7407 }
7408 }
4025353c 7409 eh->elf.root.u.def.value = 0;
81688140 7410 eh->elf.root.u.def.section = dsec;
4025353c
AM		 7411 }
7412 else
7413 eh->elf.root.u.def.value += adjust;
754021d0
AM		 7414 eh->adjust_done = 1;
7415 }
7416 return TRUE;
7417}
7418
8c1d1bb8 7419/* Handles decrementing dynamic reloc counts for the reloc specified by
19e08130 7420 R_INFO in section SEC. If LOCAL_SYMS is NULL, then H and SYM
8c1d1bb8
AM		 7421 have already been determined. */
7422
7423static bfd_boolean
7424dec_dynrel_count (bfd_vma r_info,
7425 asection *sec,
7426 struct bfd_link_info *info,
7427 Elf_Internal_Sym **local_syms,
7428 struct elf_link_hash_entry *h,
19e08130 7429 Elf_Internal_Sym *sym)
8c1d1bb8
AM		 7430{
7431 enum elf_ppc64_reloc_type r_type;
19e08130 7432 asection *sym_sec = NULL;
8c1d1bb8
AM		 7433
7434 /* Can this reloc be dynamic? This switch, and later tests here
7435 should be kept in sync with the code in check_relocs. */
7436 r_type = ELF64_R_TYPE (r_info);
7437 switch (r_type)
7438 {
7439 default:
7440 return TRUE;
7441
7442 case R_PPC64_TPREL16:
7443 case R_PPC64_TPREL16_LO:
7444 case R_PPC64_TPREL16_HI:
7445 case R_PPC64_TPREL16_HA:
7446 case R_PPC64_TPREL16_DS:
7447 case R_PPC64_TPREL16_LO_DS:
f9c6b907
AM		 7448 case R_PPC64_TPREL16_HIGH:
7449 case R_PPC64_TPREL16_HIGHA:
8c1d1bb8
AM		 7450 case R_PPC64_TPREL16_HIGHER:
7451 case R_PPC64_TPREL16_HIGHERA:
7452 case R_PPC64_TPREL16_HIGHEST:
7453 case R_PPC64_TPREL16_HIGHESTA:
7454 if (!info->shared)
7455 return TRUE;
7456
7457 case R_PPC64_TPREL64:
7458 case R_PPC64_DTPMOD64:
7459 case R_PPC64_DTPREL64:
7460 case R_PPC64_ADDR64:
7461 case R_PPC64_REL30:
7462 case R_PPC64_REL32:
7463 case R_PPC64_REL64:
7464 case R_PPC64_ADDR14:
7465 case R_PPC64_ADDR14_BRNTAKEN:
7466 case R_PPC64_ADDR14_BRTAKEN:
7467 case R_PPC64_ADDR16:
7468 case R_PPC64_ADDR16_DS:
7469 case R_PPC64_ADDR16_HA:
7470 case R_PPC64_ADDR16_HI:
f9c6b907
AM		 7471 case R_PPC64_ADDR16_HIGH:
7472 case R_PPC64_ADDR16_HIGHA:
8c1d1bb8
AM		 7473 case R_PPC64_ADDR16_HIGHER:
7474 case R_PPC64_ADDR16_HIGHERA:
7475 case R_PPC64_ADDR16_HIGHEST:
7476 case R_PPC64_ADDR16_HIGHESTA:
7477 case R_PPC64_ADDR16_LO:
7478 case R_PPC64_ADDR16_LO_DS:
7479 case R_PPC64_ADDR24:
7480 case R_PPC64_ADDR32:
7481 case R_PPC64_UADDR16:
7482 case R_PPC64_UADDR32:
7483 case R_PPC64_UADDR64:
7484 case R_PPC64_TOC:
7485 break;
7486 }
7487
7488 if (local_syms != NULL)
7489 {
7490 unsigned long r_symndx;
8c1d1bb8
AM		 7491 bfd *ibfd = sec->owner;
7492
7493 r_symndx = ELF64_R_SYM (r_info);
7494 if (!get_sym_h (&h, &sym, &sym_sec, NULL, local_syms, r_symndx, ibfd))
7495 return FALSE;
7496 }
7497
7498 if ((info->shared
1d483afe 7499 && (must_be_dyn_reloc (info, r_type)
8c1d1bb8 7500 || (h != NULL
198f1157 7501 && (!SYMBOLIC_BIND (info, h)
8c1d1bb8
AM		 7502 || h->root.type == bfd_link_hash_defweak
7503 || !h->def_regular))))
7504 || (ELIMINATE_COPY_RELOCS
7505 && !info->shared
7506 && h != NULL
7507 && (h->root.type == bfd_link_hash_defweak
7508 || !h->def_regular)))
7509 ;
7510 else
7511 return TRUE;
7512
7513 if (h != NULL)
6edfbbad 7514 {
19e08130
AM		 7515 struct elf_dyn_relocs *p;
7516 struct elf_dyn_relocs **pp;
7517 pp = &((struct ppc_link_hash_entry *) h)->dyn_relocs;
7518
7519 /* elf_gc_sweep may have already removed all dyn relocs associated
7520 with local syms for a given section. Also, symbol flags are
7521 changed by elf_gc_sweep_symbol, confusing the test above. Don't
7522 report a dynreloc miscount. */
7523 if (*pp == NULL && info->gc_sections)
7524 return TRUE;
7525
7526 while ((p = *pp) != NULL)
60124e18 7527 {
19e08130
AM		 7528 if (p->sec == sec)
7529 {
7530 if (!must_be_dyn_reloc (info, r_type))
7531 p->pc_count -= 1;
7532 p->count -= 1;
7533 if (p->count == 0)
7534 *pp = p->next;
7535 return TRUE;
7536 }
7537 pp = &p->next;
60124e18 7538 }
6edfbbad 7539 }
19e08130
AM		 7540 else
7541 {
7542 struct ppc_dyn_relocs *p;
7543 struct ppc_dyn_relocs **pp;
7544 void *vpp;
7545 bfd_boolean is_ifunc;
8c1d1bb8 7546
19e08130
AM		 7547 if (local_syms == NULL)
7548 sym_sec = bfd_section_from_elf_index (sec->owner, sym->st_shndx);
7549 if (sym_sec == NULL)
7550 sym_sec = sec;
c57da1a7 7551
19e08130
AM		 7552 vpp = &elf_section_data (sym_sec)->local_dynrel;
7553 pp = (struct ppc_dyn_relocs **) vpp;
7554
7555 if (*pp == NULL && info->gc_sections)
7556 return TRUE;
7557
7558 is_ifunc = ELF_ST_TYPE (sym->st_info) == STT_GNU_IFUNC;
7559 while ((p = *pp) != NULL)
8c1d1bb8 7560 {
19e08130
AM		 7561 if (p->sec == sec && p->ifunc == is_ifunc)
7562 {
7563 p->count -= 1;
7564 if (p->count == 0)
7565 *pp = p->next;
7566 return TRUE;
7567 }
7568 pp = &p->next;
8c1d1bb8 7569 }
8c1d1bb8
AM		 7570 }
7571
8de848d8 7572 info->callbacks->einfo (_("%P: dynreloc miscount for %B, section %A\n"),
25f53a85 7573 sec->owner, sec);
8c1d1bb8
AM		 7574 bfd_set_error (bfd_error_bad_value);
7575 return FALSE;
7576}
7577
754021d0
AM		 7578/* Remove unused Official Procedure Descriptor entries. Currently we
7579 only remove those associated with functions in discarded link-once
7580 sections, or weakly defined functions that have been overridden. It
7581 would be possible to remove many more entries for statically linked
7582 applications. */
7583
b34976b6 7584bfd_boolean
e7d1c40c 7585ppc64_elf_edit_opd (struct bfd_link_info *info)
1e2f5b6e
AM		 7586{
7587 bfd *ibfd;
754021d0 7588 bfd_boolean some_edited = FALSE;
3f764659 7589 asection *need_pad = NULL;
e7d1c40c
AM		 7590 struct ppc_link_hash_table *htab;
7591
7592 htab = ppc_hash_table (info);
7593 if (htab == NULL)
7594 return FALSE;
1e2f5b6e 7595
c72f2fb2 7596 for (ibfd = info->input_bfds; ibfd != NULL; ibfd = ibfd->link.next)
1e2f5b6e
AM		 7597 {
7598 asection *sec;
7599 Elf_Internal_Rela *relstart, *rel, *relend;
7600 Elf_Internal_Shdr *symtab_hdr;
6cdc0ccc 7601 Elf_Internal_Sym *local_syms;
1e2f5b6e 7602 bfd_vma offset;
74f0fb50 7603 struct _opd_sec_data *opd;
3f764659
JJ		 7604 bfd_boolean need_edit, add_aux_fields;
7605 bfd_size_type cnt_16b = 0;
1e2f5b6e 7606
854b41e7
AM		 7607 if (!is_ppc64_elf (ibfd))
7608 continue;
7609
1e2f5b6e 7610 sec = bfd_get_section_by_name (ibfd, ".opd");
46de2a7c 7611 if (sec == NULL || sec->size == 0)
1e2f5b6e
AM		 7612 continue;
7613
dbaa2011 7614 if (sec->sec_info_type == SEC_INFO_TYPE_JUST_SYMS)
4b85d634
AM		 7615 continue;
7616
1e2f5b6e
AM		 7617 if (sec->output_section == bfd_abs_section_ptr)
7618 continue;
7619
7620 /* Look through the section relocs. */
7621 if ((sec->flags & SEC_RELOC) == 0 || sec->reloc_count == 0)
7622 continue;
7623
6cdc0ccc 7624 local_syms = NULL;
0ffa91dd 7625 symtab_hdr = &elf_symtab_hdr (ibfd);
1e2f5b6e
AM		 7626
7627 /* Read the relocations. */
4ce794b7 7628 relstart = _bfd_elf_link_read_relocs (ibfd, sec, NULL, NULL,
45d6a902 7629 info->keep_memory);
1e2f5b6e 7630 if (relstart == NULL)
b34976b6 7631 return FALSE;
1e2f5b6e
AM		 7632
7633 /* First run through the relocs to check they are sane, and to
7634 determine whether we need to edit this opd section. */
b34976b6 7635 need_edit = FALSE;
3f764659 7636 need_pad = sec;
1e2f5b6e
AM		 7637 offset = 0;
7638 relend = relstart + sec->reloc_count;
50bc7936 7639 for (rel = relstart; rel < relend; )
1e2f5b6e 7640 {
04c9666a 7641 enum elf_ppc64_reloc_type r_type;
1e2f5b6e
AM		 7642 unsigned long r_symndx;
7643 asection *sym_sec;
7644 struct elf_link_hash_entry *h;
7645 Elf_Internal_Sym *sym;
7646
3f764659 7647 /* .opd contains a regular array of 16 or 24 byte entries. We're
1e2f5b6e
AM		 7648 only interested in the reloc pointing to a function entry
7649 point. */
50bc7936
AM		 7650 if (rel->r_offset != offset
7651 || rel + 1 >= relend
7652 || (rel + 1)->r_offset != offset + 8)
1e2f5b6e
AM		 7653 {
7654 /* If someone messes with .opd alignment then after a
7655 "ld -r" we might have padding in the middle of .opd.
7656 Also, there's nothing to prevent someone putting
7657 something silly in .opd with the assembler. No .opd
b34976b6 7658 optimization for them! */
3f764659 7659 broken_opd:
1e2f5b6e 7660 (*_bfd_error_handler)
d003868e 7661 (_("%B: .opd is not a regular array of opd entries"), ibfd);
b34976b6 7662 need_edit = FALSE;
1e2f5b6e
AM		 7663 break;
7664 }
7665
50bc7936
AM		 7666 if ((r_type = ELF64_R_TYPE (rel->r_info)) != R_PPC64_ADDR64
7667 || (r_type = ELF64_R_TYPE ((rel + 1)->r_info)) != R_PPC64_TOC)
7668 {
7669 (*_bfd_error_handler)
d003868e
AM		 7670 (_("%B: unexpected reloc type %u in .opd section"),
7671 ibfd, r_type);
50bc7936
AM		 7672 need_edit = FALSE;
7673 break;
7674 }
7675
1e2f5b6e 7676 r_symndx = ELF64_R_SYM (rel->r_info);
411e1bfb
AM		 7677 if (!get_sym_h (&h, &sym, &sym_sec, NULL, &local_syms,
7678 r_symndx, ibfd))
50bc7936 7679 goto error_ret;
1e2f5b6e
AM		 7680
7681 if (sym_sec == NULL || sym_sec->owner == NULL)
7682 {
411e1bfb
AM		 7683 const char *sym_name;
7684 if (h != NULL)
7685 sym_name = h->root.root.string;
7686 else
26c61ae5
L		 7687 sym_name = bfd_elf_sym_name (ibfd, symtab_hdr, sym,
7688 sym_sec);
411e1bfb 7689
1e2f5b6e 7690 (*_bfd_error_handler)
d003868e
AM		 7691 (_("%B: undefined sym `%s' in .opd section"),
7692 ibfd, sym_name);
b34976b6 7693 need_edit = FALSE;
1e2f5b6e
AM		 7694 break;
7695 }
7696
51020317
AM		 7697 /* opd entries are always for functions defined in the
7698 current input bfd. If the symbol isn't defined in the
7699 input bfd, then we won't be using the function in this
7700 bfd; It must be defined in a linkonce section in another
7701 bfd, or is weak. It's also possible that we are
7702 discarding the function due to a linker script /DISCARD/,
7703 which we test for via the output_section. */
7704 if (sym_sec->owner != ibfd
7705 || sym_sec->output_section == bfd_abs_section_ptr)
b34976b6 7706 need_edit = TRUE;
1e2f5b6e 7707
50bc7936 7708 rel += 2;
3f764659
JJ		 7709 if (rel == relend
7710 || (rel + 1 == relend && rel->r_offset == offset + 16))
7711 {
7712 if (sec->size == offset + 24)
7713 {
7714 need_pad = NULL;
7715 break;
7716 }
7717 if (rel == relend && sec->size == offset + 16)
7718 {
7719 cnt_16b++;
7720 break;
7721 }
7722 goto broken_opd;
7723 }
7724
7725 if (rel->r_offset == offset + 24)
7726 offset += 24;
7727 else if (rel->r_offset != offset + 16)
7728 goto broken_opd;
7729 else if (rel + 1 < relend
7730 && ELF64_R_TYPE (rel[0].r_info) == R_PPC64_ADDR64
7731 && ELF64_R_TYPE (rel[1].r_info) == R_PPC64_TOC)
7732 {
7733 offset += 16;
7734 cnt_16b++;
7735 }
7736 else if (rel + 2 < relend
7737 && ELF64_R_TYPE (rel[1].r_info) == R_PPC64_ADDR64
7738 && ELF64_R_TYPE (rel[2].r_info) == R_PPC64_TOC)
7739 {
7740 offset += 24;
7741 rel += 1;
7742 }
7743 else
7744 goto broken_opd;
1e2f5b6e
AM		 7745 }
7746
e7d1c40c 7747 add_aux_fields = htab->params->non_overlapping_opd && cnt_16b > 0;
3f764659
JJ		 7748
7749 if (need_edit || add_aux_fields)
1e2f5b6e
AM		 7750 {
7751 Elf_Internal_Rela *write_rel;
d4730f92 7752 Elf_Internal_Shdr *rel_hdr;
1e2f5b6e 7753 bfd_byte *rptr, *wptr;
983bddc8 7754 bfd_byte *new_contents;
b34976b6 7755 bfd_boolean skip;
3f764659 7756 long opd_ent_size;
74f0fb50
AM		 7757 bfd_size_type amt;
7758
983bddc8 7759 new_contents = NULL;
74f0fb50
AM		 7760 amt = sec->size * sizeof (long) / 8;
7761 opd = &ppc64_elf_section_data (sec)->u.opd;
33c0ec9d 7762 opd->adjust = bfd_zalloc (sec->owner, amt);
74f0fb50
AM		 7763 if (opd->adjust == NULL)
7764 return FALSE;
7765 ppc64_elf_section_data (sec)->sec_type = sec_opd;
1e2f5b6e
AM		 7766
7767 /* This seems a waste of time as input .opd sections are all
7768 zeros as generated by gcc, but I suppose there's no reason
7769 this will always be so. We might start putting something in
7770 the third word of .opd entries. */
7771 if ((sec->flags & SEC_IN_MEMORY) == 0)
7772 {
eea6121a
AM		 7773 bfd_byte *loc;
7774 if (!bfd_malloc_and_get_section (ibfd, sec, &loc))
6cdc0ccc 7775 {
eea6121a
AM		 7776 if (loc != NULL)
7777 free (loc);
50bc7936 7778 error_ret:
6cdc0ccc
AM		 7779 if (local_syms != NULL
7780 && symtab_hdr->contents != (unsigned char *) local_syms)
7781 free (local_syms);
6cdc0ccc
AM		 7782 if (elf_section_data (sec)->relocs != relstart)
7783 free (relstart);
b34976b6 7784 return FALSE;
6cdc0ccc 7785 }
1e2f5b6e
AM		 7786 sec->contents = loc;
7787 sec->flags |= (SEC_IN_MEMORY | SEC_HAS_CONTENTS);
7788 }
7789
7790 elf_section_data (sec)->relocs = relstart;
7791
3f764659 7792 new_contents = sec->contents;
3f764659
JJ		 7793 if (add_aux_fields)
7794 {
7795 new_contents = bfd_malloc (sec->size + cnt_16b * 8);
7796 if (new_contents == NULL)
7797 return FALSE;
7798 need_pad = FALSE;
3f764659 7799 }
b4f4e59f
AM		 7800 wptr = new_contents;
7801 rptr = sec->contents;
3f764659 7802
1e2f5b6e 7803 write_rel = relstart;
b34976b6 7804 skip = FALSE;
1e2f5b6e 7805 offset = 0;
3f764659 7806 opd_ent_size = 0;
1e2f5b6e
AM		 7807 for (rel = relstart; rel < relend; rel++)
7808 {
50bc7936
AM		 7809 unsigned long r_symndx;
7810 asection *sym_sec;
7811 struct elf_link_hash_entry *h;
7812 Elf_Internal_Sym *sym;
7813
7814 r_symndx = ELF64_R_SYM (rel->r_info);
7815 if (!get_sym_h (&h, &sym, &sym_sec, NULL, &local_syms,
d37c89e5 7816 r_symndx, ibfd))
50bc7936
AM		 7817 goto error_ret;
7818
1e2f5b6e
AM		 7819 if (rel->r_offset == offset)
7820 {
50bc7936 7821 struct ppc_link_hash_entry *fdh = NULL;
3f764659
JJ		 7822
7823 /* See if the .opd entry is full 24 byte or
7824 16 byte (with fd_aux entry overlapped with next
7825 fd_func). */
7826 opd_ent_size = 24;
7827 if ((rel + 2 == relend && sec->size == offset + 16)
7828 || (rel + 3 < relend
7829 && rel[2].r_offset == offset + 16
7830 && rel[3].r_offset == offset + 24
7831 && ELF64_R_TYPE (rel[2].r_info) == R_PPC64_ADDR64
7832 && ELF64_R_TYPE (rel[3].r_info) == R_PPC64_TOC))
7833 opd_ent_size = 16;
7834
4025353c
AM		 7835 if (h != NULL
7836 && h->root.root.string[0] == '.')
c4f68ce3 7837 {
e7d1c40c 7838 fdh = lookup_fdh ((struct ppc_link_hash_entry *) h, htab);
c4f68ce3
AM		 7839 if (fdh != NULL
7840 && fdh->elf.root.type != bfd_link_hash_defined
7841 && fdh->elf.root.type != bfd_link_hash_defweak)
7842 fdh = NULL;
7843 }
1e2f5b6e 7844
51020317
AM		 7845 skip = (sym_sec->owner != ibfd
7846 || sym_sec->output_section == bfd_abs_section_ptr);
a4aa0fb7
AM		 7847 if (skip)
7848 {
4025353c 7849 if (fdh != NULL && sym_sec->owner == ibfd)
a4aa0fb7
AM		 7850 {
7851 /* Arrange for the function descriptor sym
7852 to be dropped. */
d6fe2dc1
AM		 7853 fdh->elf.root.u.def.value = 0;
7854 fdh->elf.root.u.def.section = sym_sec;
a4aa0fb7 7855 }
74f0fb50 7856 opd->adjust[rel->r_offset / 8] = -1;
a4aa0fb7
AM		 7857 }
7858 else
1e2f5b6e
AM		 7859 {
7860 /* We'll be keeping this opd entry. */
7861
4025353c 7862 if (fdh != NULL)
1e2f5b6e 7863 {
754021d0
AM		 7864 /* Redefine the function descriptor symbol to
7865 this location in the opd section. It is
7866 necessary to update the value here rather
7867 than using an array of adjustments as we do
7868 for local symbols, because various places
7869 in the generic ELF code use the value
7870 stored in u.def.value. */
3f764659 7871 fdh->elf.root.u.def.value = wptr - new_contents;
754021d0 7872 fdh->adjust_done = 1;
1e2f5b6e 7873 }
754021d0
AM		 7874
7875 /* Local syms are a bit tricky. We could
7876 tweak them as they can be cached, but
7877 we'd need to look through the local syms
7878 for the function descriptor sym which we
7879 don't have at the moment. So keep an
7880 array of adjustments. */
74f0fb50 7881 opd->adjust[rel->r_offset / 8]
3f764659 7882 = (wptr - new_contents) - (rptr - sec->contents);
1e2f5b6e
AM		 7883
7884 if (wptr != rptr)
3f764659
JJ		 7885 memcpy (wptr, rptr, opd_ent_size);
7886 wptr += opd_ent_size;
7887 if (add_aux_fields && opd_ent_size == 16)
7888 {
7889 memset (wptr, '\0', 8);
7890 wptr += 8;
7891 }
1e2f5b6e 7892 }
3f764659
JJ		 7893 rptr += opd_ent_size;
7894 offset += opd_ent_size;
1e2f5b6e
AM		 7895 }
7896
50bc7936
AM		 7897 if (skip)
7898 {
60124e18
AM		 7899 if (!NO_OPD_RELOCS
7900 && !info->relocatable
18d944df 7901 && !dec_dynrel_count (rel->r_info, sec, info,
19e08130 7902 NULL, h, sym))
8c1d1bb8 7903 goto error_ret;
50bc7936
AM		 7904 }
7905 else
1e2f5b6e 7906 {
50bc7936
AM		 7907 /* We need to adjust any reloc offsets to point to the
7908 new opd entries. While we're at it, we may as well
7909 remove redundant relocs. */
74f0fb50 7910 rel->r_offset += opd->adjust[(offset - opd_ent_size) / 8];
1e2f5b6e
AM		 7911 if (write_rel != rel)
7912 memcpy (write_rel, rel, sizeof (*rel));
7913 ++write_rel;
7914 }
7915 }
7916
3f764659 7917 sec->size = wptr - new_contents;
1e2f5b6e 7918 sec->reloc_count = write_rel - relstart;
3f764659
JJ		 7919 if (add_aux_fields)
7920 {
7921 free (sec->contents);
7922 sec->contents = new_contents;
7923 }
7924
05bf9422 7925 /* Fudge the header size too, as this is used later in
cdcf6e38 7926 elf_bfd_final_link if we are emitting relocs. */
d4730f92
BS		 7927 rel_hdr = _bfd_elf_single_rel_hdr (sec);
7928 rel_hdr->sh_size = sec->reloc_count * rel_hdr->sh_entsize;
754021d0 7929 some_edited = TRUE;
1e2f5b6e 7930 }
6cdc0ccc 7931 else if (elf_section_data (sec)->relocs != relstart)
1e2f5b6e 7932 free (relstart);
6cdc0ccc 7933
411e1bfb
AM		 7934 if (local_syms != NULL
7935 && symtab_hdr->contents != (unsigned char *) local_syms)
7936 {
7937 if (!info->keep_memory)
7938 free (local_syms);
7939 else
7940 symtab_hdr->contents = (unsigned char *) local_syms;
7941 }
7942 }
7943
754021d0
AM		 7944 if (some_edited)
7945 elf_link_hash_traverse (elf_hash_table (info), adjust_opd_syms, NULL);
7946
3f764659
JJ		 7947 /* If we are doing a final link and the last .opd entry is just 16 byte
7948 long, add a 8 byte padding after it. */
7949 if (need_pad != NULL && !info->relocatable)
7950 {
7951 bfd_byte *p;
7952
7953 if ((need_pad->flags & SEC_IN_MEMORY) == 0)
7954 {
7955 BFD_ASSERT (need_pad->size > 0);
7956
7957 p = bfd_malloc (need_pad->size + 8);
7958 if (p == NULL)
7959 return FALSE;
699733f6 7960
3f764659
JJ		 7961 if (! bfd_get_section_contents (need_pad->owner, need_pad,
7962 p, 0, need_pad->size))
7963 return FALSE;
7964
7965 need_pad->contents = p;
7966 need_pad->flags |= (SEC_IN_MEMORY | SEC_HAS_CONTENTS);
7967 }
7968 else
7969 {
7970 p = bfd_realloc (need_pad->contents, need_pad->size + 8);
7971 if (p == NULL)
7972 return FALSE;
7973
7974 need_pad->contents = p;
7975 }
7976
7977 memset (need_pad->contents + need_pad->size, 0, 8);
7978 need_pad->size += 8;
7979 }
7980
411e1bfb
AM		 7981 return TRUE;
7982}
7983
e1918d23 7984/* Set htab->tls_get_addr and call the generic ELF tls_setup function. */
411e1bfb 7985
e1918d23 7986asection *
e7d1c40c 7987ppc64_elf_tls_setup (struct bfd_link_info *info)
411e1bfb 7988{
411e1bfb
AM		 7989 struct ppc_link_hash_table *htab;
7990
411e1bfb 7991 htab = ppc_hash_table (info);
4dfe6ac6
NC		 7992 if (htab == NULL)
7993 return NULL;
7994
ee67d69a
AM		 7995 if (abiversion (info->output_bfd) == 1)
7996 htab->opd_abi = 1;
7997
e7d1c40c 7998 if (htab->params->no_multi_toc)
33c0ec9d
AM		 7999 htab->do_multi_toc = 0;
8000 else if (!htab->do_multi_toc)
e7d1c40c 8001 htab->params->no_multi_toc = 1;
33c0ec9d 8002
3a71aa26
AM		 8003 htab->tls_get_addr = ((struct ppc_link_hash_entry *)
8004 elf_link_hash_lookup (&htab->elf, ".__tls_get_addr",
8005 FALSE, FALSE, TRUE));
a7f2871e
AM		 8006 /* Move dynamic linking info to the function descriptor sym. */
8007 if (htab->tls_get_addr != NULL)
8008 func_desc_adjust (&htab->tls_get_addr->elf, info);
3a71aa26
AM		 8009 htab->tls_get_addr_fd = ((struct ppc_link_hash_entry *)
8010 elf_link_hash_lookup (&htab->elf, "__tls_get_addr",
8011 FALSE, FALSE, TRUE));
e7d1c40c 8012 if (!htab->params->no_tls_get_addr_opt)
a7f2871e
AM		 8013 {
8014 struct elf_link_hash_entry *opt, *opt_fd, *tga, *tga_fd;
8015
8016 opt = elf_link_hash_lookup (&htab->elf, ".__tls_get_addr_opt",
8017 FALSE, FALSE, TRUE);
8018 if (opt != NULL)
8019 func_desc_adjust (opt, info);
8020 opt_fd = elf_link_hash_lookup (&htab->elf, "__tls_get_addr_opt",
8021 FALSE, FALSE, TRUE);
8022 if (opt_fd != NULL
8023 && (opt_fd->root.type == bfd_link_hash_defined
8024 || opt_fd->root.type == bfd_link_hash_defweak))
8025 {
8026 /* If glibc supports an optimized __tls_get_addr call stub,
8027 signalled by the presence of __tls_get_addr_opt, and we'll
8028 be calling __tls_get_addr via a plt call stub, then
8029 make __tls_get_addr point to __tls_get_addr_opt. */
8030 tga_fd = &htab->tls_get_addr_fd->elf;
8031 if (htab->elf.dynamic_sections_created
8032 && tga_fd != NULL
8033 && (tga_fd->type == STT_FUNC
8034 || tga_fd->needs_plt)
8035 && !(SYMBOL_CALLS_LOCAL (info, tga_fd)
8036 || (ELF_ST_VISIBILITY (tga_fd->other) != STV_DEFAULT
8037 && tga_fd->root.type == bfd_link_hash_undefweak)))
8038 {
8039 struct plt_entry *ent;
8040
8041 for (ent = tga_fd->plt.plist; ent != NULL; ent = ent->next)
8042 if (ent->plt.refcount > 0)
8043 break;
8044 if (ent != NULL)
8045 {
8046 tga_fd->root.type = bfd_link_hash_indirect;
8047 tga_fd->root.u.i.link = &opt_fd->root;
8048 ppc64_elf_copy_indirect_symbol (info, opt_fd, tga_fd);
8049 if (opt_fd->dynindx != -1)
8050 {
8051 /* Use __tls_get_addr_opt in dynamic relocations. */
8052 opt_fd->dynindx = -1;
8053 _bfd_elf_strtab_delref (elf_hash_table (info)->dynstr,
8054 opt_fd->dynstr_index);
8055 if (!bfd_elf_link_record_dynamic_symbol (info, opt_fd))
854b41e7 8056 return NULL;
a7f2871e
AM		 8057 }
8058 htab->tls_get_addr_fd = (struct ppc_link_hash_entry *) opt_fd;
8059 tga = &htab->tls_get_addr->elf;
8060 if (opt != NULL && tga != NULL)
8061 {
8062 tga->root.type = bfd_link_hash_indirect;
8063 tga->root.u.i.link = &opt->root;
8064 ppc64_elf_copy_indirect_symbol (info, opt, tga);
8065 _bfd_elf_link_hash_hide_symbol (info, opt,
8066 tga->forced_local);
8067 htab->tls_get_addr = (struct ppc_link_hash_entry *) opt;
8068 }
8069 htab->tls_get_addr_fd->oh = htab->tls_get_addr;
8070 htab->tls_get_addr_fd->is_func_descriptor = 1;
8071 if (htab->tls_get_addr != NULL)
8072 {
8073 htab->tls_get_addr->oh = htab->tls_get_addr_fd;
8074 htab->tls_get_addr->is_func = 1;
8075 }
8076 }
8077 }
8078 }
8079 else
e7d1c40c 8080 htab->params->no_tls_get_addr_opt = TRUE;
a7f2871e 8081 }
33c0ec9d 8082 return _bfd_elf_tls_setup (info->output_bfd, info);
3a71aa26 8083}
8387904d 8084
3a71aa26
AM		 8085/* Return TRUE iff REL is a branch reloc with a global symbol matching
8086 HASH1 or HASH2. */
8387904d 8087
3a71aa26
AM		 8088static bfd_boolean
8089branch_reloc_hash_match (const bfd *ibfd,
8090 const Elf_Internal_Rela *rel,
8091 const struct ppc_link_hash_entry *hash1,
8092 const struct ppc_link_hash_entry *hash2)
8093{
8094 Elf_Internal_Shdr *symtab_hdr = &elf_symtab_hdr (ibfd);
8095 enum elf_ppc64_reloc_type r_type = ELF64_R_TYPE (rel->r_info);
8096 unsigned int r_symndx = ELF64_R_SYM (rel->r_info);
8097
e054468f 8098 if (r_symndx >= symtab_hdr->sh_info && is_branch_reloc (r_type))
8387904d 8099 {
3a71aa26
AM		 8100 struct elf_link_hash_entry **sym_hashes = elf_sym_hashes (ibfd);
8101 struct elf_link_hash_entry *h;
8387904d 8102
3a71aa26 8103 h = sym_hashes[r_symndx - symtab_hdr->sh_info];
b31867b6 8104 h = elf_follow_link (h);
3a71aa26
AM		 8105 if (h == &hash1->elf || h == &hash2->elf)
8106 return TRUE;
a48ebf4d 8107 }
3a71aa26 8108 return FALSE;
951fd09b 8109}
411e1bfb 8110
951fd09b
AM		 8111/* Run through all the TLS relocs looking for optimization
8112 opportunities. The linker has been hacked (see ppc64elf.em) to do
8113 a preliminary section layout so that we know the TLS segment
8114 offsets. We can't optimize earlier because some optimizations need
8115 to know the tp offset, and we need to optimize before allocating
8116 dynamic relocations. */
8117
8118bfd_boolean
33c0ec9d 8119ppc64_elf_tls_optimize (struct bfd_link_info *info)
951fd09b
AM		 8120{
8121 bfd *ibfd;
8122 asection *sec;
8123 struct ppc_link_hash_table *htab;
663a1470 8124 unsigned char *toc_ref;
102890f0 8125 int pass;
951fd09b 8126
1d483afe 8127 if (info->relocatable || !info->executable)
411e1bfb
AM		 8128 return TRUE;
8129
951fd09b 8130 htab = ppc_hash_table (info);
4dfe6ac6
NC		 8131 if (htab == NULL)
8132 return FALSE;
8133
663a1470
AM		 8134 /* Make two passes over the relocs. On the first pass, mark toc
8135 entries involved with tls relocs, and check that tls relocs
8136 involved in setting up a tls_get_addr call are indeed followed by
8137 such a call. If they are not, we can't do any tls optimization.
8138 On the second pass twiddle tls_mask flags to notify
8139 relocate_section that optimization can be done, and adjust got
8140 and plt refcounts. */
8141 toc_ref = NULL;
8142 for (pass = 0; pass < 2; ++pass)
c72f2fb2 8143 for (ibfd = info->input_bfds; ibfd != NULL; ibfd = ibfd->link.next)
663a1470
AM		 8144 {
8145 Elf_Internal_Sym *locsyms = NULL;
8146 asection *toc = bfd_get_section_by_name (ibfd, ".toc");
8147
102890f0
AM		 8148 for (sec = ibfd->sections; sec != NULL; sec = sec->next)
8149 if (sec->has_tls_reloc && !bfd_is_abs_section (sec->output_section))
8150 {
8151 Elf_Internal_Rela *relstart, *rel, *relend;
663a1470 8152 bfd_boolean found_tls_get_addr_arg = 0;
411e1bfb 8153
102890f0
AM		 8154 /* Read the relocations. */
8155 relstart = _bfd_elf_link_read_relocs (ibfd, sec, NULL, NULL,
8156 info->keep_memory);
8157 if (relstart == NULL)
2915c55b
JK		 8158 {
8159 free (toc_ref);
8160 return FALSE;
8161 }
411e1bfb 8162
102890f0
AM		 8163 relend = relstart + sec->reloc_count;
8164 for (rel = relstart; rel < relend; rel++)
8165 {
8166 enum elf_ppc64_reloc_type r_type;
8167 unsigned long r_symndx;
8168 struct elf_link_hash_entry *h;
8169 Elf_Internal_Sym *sym;
8170 asection *sym_sec;
f961d9dd
AM		 8171 unsigned char *tls_mask;
8172 unsigned char tls_set, tls_clear, tls_type = 0;
102890f0
AM		 8173 bfd_vma value;
8174 bfd_boolean ok_tprel, is_local;
8175 long toc_ref_index = 0;
8176 int expecting_tls_get_addr = 0;
663a1470 8177 bfd_boolean ret = FALSE;
411e1bfb 8178
102890f0
AM		 8179 r_symndx = ELF64_R_SYM (rel->r_info);
8180 if (!get_sym_h (&h, &sym, &sym_sec, &tls_mask, &locsyms,
8181 r_symndx, ibfd))
8182 {
8183 err_free_rel:
8184 if (elf_section_data (sec)->relocs != relstart)
8185 free (relstart);
8186 if (toc_ref != NULL)
8187 free (toc_ref);
8188 if (locsyms != NULL
0ffa91dd 8189 && (elf_symtab_hdr (ibfd).contents
102890f0
AM		 8190 != (unsigned char *) locsyms))
8191 free (locsyms);
663a1470 8192 return ret;
102890f0 8193 }
411e1bfb 8194
102890f0
AM		 8195 if (h != NULL)
8196 {
766bc656
AM		 8197 if (h->root.type == bfd_link_hash_defined
8198 || h->root.type == bfd_link_hash_defweak)
8199 value = h->root.u.def.value;
8200 else if (h->root.type == bfd_link_hash_undefweak)
8201 value = 0;
8202 else
663a1470
AM		 8203 {
8204 found_tls_get_addr_arg = 0;
8205 continue;
8206 }
102890f0
AM		 8207 }
8208 else
8209 /* Symbols referenced by TLS relocs must be of type
8210 STT_TLS. So no need for .opd local sym adjust. */
8211 value = sym->st_value;
8212
8213 ok_tprel = FALSE;
8214 is_local = FALSE;
8215 if (h == NULL
8216 || !h->def_dynamic)
8217 {
8218 is_local = TRUE;
766bc656
AM		 8219 if (h != NULL
8220 && h->root.type == bfd_link_hash_undefweak)
8221 ok_tprel = TRUE;
8222 else
8223 {
8224 value += sym_sec->output_offset;
8225 value += sym_sec->output_section->vma;
8226 value -= htab->elf.tls_sec->vma;
8227 ok_tprel = (value + TP_OFFSET + ((bfd_vma) 1 << 31)
8228 < (bfd_vma) 1 << 32);
8229 }
102890f0 8230 }
951fd09b 8231
102890f0 8232 r_type = ELF64_R_TYPE (rel->r_info);
663a1470
AM		 8233 /* If this section has old-style __tls_get_addr calls
8234 without marker relocs, then check that each
8235 __tls_get_addr call reloc is preceded by a reloc
8236 that conceivably belongs to the __tls_get_addr arg
8237 setup insn. If we don't find matching arg setup
8238 relocs, don't do any tls optimization. */
8239 if (pass == 0
8240 && sec->has_tls_get_addr_call
8241 && h != NULL
8242 && (h == &htab->tls_get_addr->elf
8243 || h == &htab->tls_get_addr_fd->elf)
8244 && !found_tls_get_addr_arg
8245 && is_branch_reloc (r_type))
8246 {
25f53a85 8247 info->callbacks->minfo (_("%H __tls_get_addr lost arg, "
663a1470
AM		 8248 "TLS optimization disabled\n"),
8249 ibfd, sec, rel->r_offset);
8250 ret = TRUE;
8251 goto err_free_rel;
8252 }
8253
8254 found_tls_get_addr_arg = 0;
102890f0
AM		 8255 switch (r_type)
8256 {
8257 case R_PPC64_GOT_TLSLD16:
8258 case R_PPC64_GOT_TLSLD16_LO:
8259 expecting_tls_get_addr = 1;
663a1470 8260 found_tls_get_addr_arg = 1;
102890f0
AM		 8261 /* Fall thru */
8262
8263 case R_PPC64_GOT_TLSLD16_HI:
8264 case R_PPC64_GOT_TLSLD16_HA:
8265 /* These relocs should never be against a symbol
8266 defined in a shared lib. Leave them alone if
8267 that turns out to be the case. */
8268 if (!is_local)
8269 continue;
411e1bfb 8270
102890f0 8271 /* LD -> LE */
411e1bfb 8272 tls_set = 0;
102890f0
AM		 8273 tls_clear = TLS_LD;
8274 tls_type = TLS_TLS | TLS_LD;
8275 break;
411e1bfb 8276
102890f0
AM		 8277 case R_PPC64_GOT_TLSGD16:
8278 case R_PPC64_GOT_TLSGD16_LO:
8279 expecting_tls_get_addr = 1;
663a1470 8280 found_tls_get_addr_arg = 1;
102890f0
AM		 8281 /* Fall thru */
8282
8283 case R_PPC64_GOT_TLSGD16_HI:
8284 case R_PPC64_GOT_TLSGD16_HA:
8285 if (ok_tprel)
8286 /* GD -> LE */
411e1bfb 8287 tls_set = 0;
102890f0
AM		 8288 else
8289 /* GD -> IE */
8290 tls_set = TLS_TLS | TLS_TPRELGD;
8291 tls_clear = TLS_GD;
8292 tls_type = TLS_TLS | TLS_GD;
8293 break;
8294
8295 case R_PPC64_GOT_TPREL16_DS:
8296 case R_PPC64_GOT_TPREL16_LO_DS:
8297 case R_PPC64_GOT_TPREL16_HI:
8298 case R_PPC64_GOT_TPREL16_HA:
8299 if (ok_tprel)
8300 {
8301 /* IE -> LE */
8302 tls_set = 0;
8303 tls_clear = TLS_TPREL;
8304 tls_type = TLS_TLS | TLS_TPREL;
8305 break;
8306 }
411e1bfb
AM		 8307 continue;
8308
727fc41e
AM		 8309 case R_PPC64_TLSGD:
8310 case R_PPC64_TLSLD:
663a1470
AM		 8311 found_tls_get_addr_arg = 1;
8312 /* Fall thru */
8313
8314 case R_PPC64_TLS:
8315 case R_PPC64_TOC16:
8316 case R_PPC64_TOC16_LO:
102890f0
AM		 8317 if (sym_sec == NULL || sym_sec != toc)
8318 continue;
8319
8320 /* Mark this toc entry as referenced by a TLS
8321 code sequence. We can do that now in the
8322 case of R_PPC64_TLS, and after checking for
8323 tls_get_addr for the TOC16 relocs. */
8324 if (toc_ref == NULL)
663a1470
AM		 8325 toc_ref = bfd_zmalloc (toc->output_section->rawsize / 8);
8326 if (toc_ref == NULL)
8327 goto err_free_rel;
8328
102890f0
AM		 8329 if (h != NULL)
8330 value = h->root.u.def.value;
8331 else
8332 value = sym->st_value;
8333 value += rel->r_addend;
8334 BFD_ASSERT (value < toc->size && value % 8 == 0);
663a1470 8335 toc_ref_index = (value + toc->output_offset) / 8;
727fc41e
AM		 8336 if (r_type == R_PPC64_TLS
8337 || r_type == R_PPC64_TLSGD
8338 || r_type == R_PPC64_TLSLD)
102890f0
AM		 8339 {
8340 toc_ref[toc_ref_index] = 1;
8341 continue;
8342 }
8343
8344 if (pass != 0 && toc_ref[toc_ref_index] == 0)
8345 continue;
8346
8347 tls_set = 0;
8348 tls_clear = 0;
8349 expecting_tls_get_addr = 2;
8350 break;
8351
8352 case R_PPC64_TPREL64:
8353 if (pass == 0
8354 || sec != toc
8355 || toc_ref == NULL
663a1470 8356 || !toc_ref[(rel->r_offset + toc->output_offset) / 8])
102890f0
AM		 8357 continue;
8358 if (ok_tprel)
8359 {
8360 /* IE -> LE */
8361 tls_set = TLS_EXPLICIT;
8362 tls_clear = TLS_TPREL;
8363 break;
8364 }
8365 continue;
8366
8367 case R_PPC64_DTPMOD64:
8368 if (pass == 0
8369 || sec != toc
8370 || toc_ref == NULL
663a1470 8371 || !toc_ref[(rel->r_offset + toc->output_offset) / 8])
102890f0
AM		 8372 continue;
8373 if (rel + 1 < relend
8374 && (rel[1].r_info
8375 == ELF64_R_INFO (r_symndx, R_PPC64_DTPREL64))
8376 && rel[1].r_offset == rel->r_offset + 8)
8377 {
8378 if (ok_tprel)
8379 /* GD -> LE */
8380 tls_set = TLS_EXPLICIT | TLS_GD;
8381 else
8382 /* GD -> IE */
8383 tls_set = TLS_EXPLICIT | TLS_GD | TLS_TPRELGD;
8384 tls_clear = TLS_GD;
8385 }
8386 else
8387 {
8388 if (!is_local)
8389 continue;
8390
8391 /* LD -> LE */
8392 tls_set = TLS_EXPLICIT;
8393 tls_clear = TLS_LD;
8394 }
8395 break;
8396
8397 default:
8398 continue;
8399 }
8400
8401 if (pass == 0)
8402 {
727fc41e
AM		 8403 if (!expecting_tls_get_addr
8404 || !sec->has_tls_get_addr_call)
102890f0
AM		 8405 continue;
8406
3a71aa26
AM		 8407 if (rel + 1 < relend
8408 && branch_reloc_hash_match (ibfd, rel + 1,
8409 htab->tls_get_addr,
8410 htab->tls_get_addr_fd))
102890f0 8411 {
3a71aa26 8412 if (expecting_tls_get_addr == 2)
102890f0 8413 {
3a71aa26 8414 /* Check for toc tls entries. */
f961d9dd 8415 unsigned char *toc_tls;
3a71aa26
AM		 8416 int retval;
8417
8418 retval = get_tls_mask (&toc_tls, NULL, NULL,
8419 &locsyms,
8420 rel, ibfd);
8421 if (retval == 0)
8422 goto err_free_rel;
663a1470
AM		 8423 if (toc_tls != NULL)
8424 {
8425 if ((*toc_tls & (TLS_GD | TLS_LD)) != 0)
8426 found_tls_get_addr_arg = 1;
8427 if (retval > 1)
8428 toc_ref[toc_ref_index] = 1;
8429 }
102890f0 8430 }
3a71aa26 8431 continue;
102890f0
AM		 8432 }
8433
8434 if (expecting_tls_get_addr != 1)
8435 continue;
8436
8437 /* Uh oh, we didn't find the expected call. We
8438 could just mark this symbol to exclude it
8439 from tls optimization but it's safer to skip
663a1470 8440 the entire optimization. */
25f53a85 8441 info->callbacks->minfo (_("%H arg lost __tls_get_addr, "
663a1470
AM		 8442 "TLS optimization disabled\n"),
8443 ibfd, sec, rel->r_offset);
8444 ret = TRUE;
8445 goto err_free_rel;
102890f0
AM		 8446 }
8447
85f7a9cb 8448 if (expecting_tls_get_addr && htab->tls_get_addr != NULL)
102890f0
AM		 8449 {
8450 struct plt_entry *ent;
8451 for (ent = htab->tls_get_addr->elf.plt.plist;
8452 ent != NULL;
8453 ent = ent->next)
8454 if (ent->addend == 0)
411e1bfb 8455 {
102890f0 8456 if (ent->plt.refcount > 0)
30038c59 8457 {
102890f0
AM		 8458 ent->plt.refcount -= 1;
8459 expecting_tls_get_addr = 0;
30038c59 8460 }
102890f0 8461 break;
411e1bfb 8462 }
102890f0 8463 }
411e1bfb 8464
85f7a9cb 8465 if (expecting_tls_get_addr && htab->tls_get_addr_fd != NULL)
102890f0
AM		 8466 {
8467 struct plt_entry *ent;
8468 for (ent = htab->tls_get_addr_fd->elf.plt.plist;
8469 ent != NULL;
8470 ent = ent->next)
8471 if (ent->addend == 0)
411e1bfb 8472 {
102890f0
AM		 8473 if (ent->plt.refcount > 0)
8474 ent->plt.refcount -= 1;
8475 break;
411e1bfb 8476 }
102890f0 8477 }
411e1bfb 8478
102890f0 8479 if (tls_clear == 0)
30038c59
AM		 8480 continue;
8481
102890f0
AM		 8482 if ((tls_set & TLS_EXPLICIT) == 0)
8483 {
8484 struct got_entry *ent;
411e1bfb 8485
102890f0
AM		 8486 /* Adjust got entry for this reloc. */
8487 if (h != NULL)
8488 ent = h->got.glist;
8489 else
8490 ent = elf_local_got_ents (ibfd)[r_symndx];
411e1bfb 8491
102890f0
AM		 8492 for (; ent != NULL; ent = ent->next)
8493 if (ent->addend == rel->r_addend
8494 && ent->owner == ibfd
8495 && ent->tls_type == tls_type)
8496 break;
8497 if (ent == NULL)
8498 abort ();
411e1bfb 8499
102890f0
AM		 8500 if (tls_set == 0)
8501 {
8502 /* We managed to get rid of a got entry. */
8503 if (ent->got.refcount > 0)
8504 ent->got.refcount -= 1;
8505 }
8506 }
8507 else
8508 {
8509 /* If we got rid of a DTPMOD/DTPREL reloc pair then
8510 we'll lose one or two dyn relocs. */
8511 if (!dec_dynrel_count (rel->r_info, sec, info,
19e08130 8512 NULL, h, sym))
102890f0 8513 return FALSE;
411e1bfb 8514
102890f0
AM		 8515 if (tls_set == (TLS_EXPLICIT | TLS_GD))
8516 {
8517 if (!dec_dynrel_count ((rel + 1)->r_info, sec, info,
19e08130 8518 NULL, h, sym))
102890f0
AM		 8519 return FALSE;
8520 }
8521 }
411e1bfb 8522
102890f0
AM		 8523 *tls_mask |= tls_set;
8524 *tls_mask &= ~tls_clear;
8525 }
8c1d1bb8 8526
102890f0
AM		 8527 if (elf_section_data (sec)->relocs != relstart)
8528 free (relstart);
8529 }
411e1bfb 8530
663a1470
AM		 8531 if (locsyms != NULL
8532 && (elf_symtab_hdr (ibfd).contents != (unsigned char *) locsyms))
8533 {
8534 if (!info->keep_memory)
8535 free (locsyms);
8536 else
8537 elf_symtab_hdr (ibfd).contents = (unsigned char *) locsyms;
8538 }
8539 }
411e1bfb 8540
663a1470
AM		 8541 if (toc_ref != NULL)
8542 free (toc_ref);
b34976b6 8543 return TRUE;
1e2f5b6e 8544}
b34976b6 8545
c5614fa4
AM		 8546/* Called via elf_link_hash_traverse from ppc64_elf_edit_toc to adjust
8547 the values of any global symbols in a toc section that has been
8548 edited. Globals in toc sections should be a rarity, so this function
8549 sets a flag if any are found in toc sections other than the one just
8550 edited, so that futher hash table traversals can be avoided. */
8551
8552struct adjust_toc_info
8553{
8554 asection *toc;
8555 unsigned long *skip;
8556 bfd_boolean global_toc_syms;
8557};
8558
ba761f19
AM		 8559enum toc_skip_enum { ref_from_discarded = 1, can_optimize = 2 };
8560
c5614fa4
AM		 8561static bfd_boolean
8562adjust_toc_syms (struct elf_link_hash_entry *h, void *inf)
8563{
8564 struct ppc_link_hash_entry *eh;
8565 struct adjust_toc_info *toc_inf = (struct adjust_toc_info *) inf;
854b41e7 8566 unsigned long i;
c5614fa4 8567
c5614fa4
AM		 8568 if (h->root.type != bfd_link_hash_defined
8569 && h->root.type != bfd_link_hash_defweak)
8570 return TRUE;
8571
8572 eh = (struct ppc_link_hash_entry *) h;
8573 if (eh->adjust_done)
8574 return TRUE;
8575
8576 if (eh->elf.root.u.def.section == toc_inf->toc)
8577 {
854b41e7
AM		 8578 if (eh->elf.root.u.def.value > toc_inf->toc->rawsize)
8579 i = toc_inf->toc->rawsize >> 3;
c5614fa4 8580 else
854b41e7
AM		 8581 i = eh->elf.root.u.def.value >> 3;
8582
ba761f19 8583 if ((toc_inf->skip[i] & (ref_from_discarded | can_optimize)) != 0)
c5614fa4
AM		 8584 {
8585 (*_bfd_error_handler)
854b41e7
AM		 8586 (_("%s defined on removed toc entry"), eh->elf.root.root.string);
8587 do
8588 ++i;
ba761f19 8589 while ((toc_inf->skip[i] & (ref_from_discarded | can_optimize)) != 0);
854b41e7 8590 eh->elf.root.u.def.value = (bfd_vma) i << 3;
c5614fa4 8591 }
854b41e7
AM		 8592
8593 eh->elf.root.u.def.value -= toc_inf->skip[i];
c5614fa4
AM		 8594 eh->adjust_done = 1;
8595 }
8596 else if (strcmp (eh->elf.root.u.def.section->name, ".toc") == 0)
8597 toc_inf->global_toc_syms = TRUE;
8598
8599 return TRUE;
8600}
8601
560c8763
AM		 8602/* Return TRUE iff INSN is one we expect on a _LO variety toc/got reloc. */
8603
8604static bfd_boolean
8605ok_lo_toc_insn (unsigned int insn)
8606{
8607 return ((insn & (0x3f << 26)) == 14u << 26 /* addi */
8608 || (insn & (0x3f << 26)) == 32u << 26 /* lwz */
8609 || (insn & (0x3f << 26)) == 34u << 26 /* lbz */
8610 || (insn & (0x3f << 26)) == 36u << 26 /* stw */
8611 || (insn & (0x3f << 26)) == 38u << 26 /* stb */
8612 || (insn & (0x3f << 26)) == 40u << 26 /* lhz */
8613 || (insn & (0x3f << 26)) == 42u << 26 /* lha */
8614 || (insn & (0x3f << 26)) == 44u << 26 /* sth */
8615 || (insn & (0x3f << 26)) == 46u << 26 /* lmw */
8616 || (insn & (0x3f << 26)) == 47u << 26 /* stmw */
8617 || (insn & (0x3f << 26)) == 48u << 26 /* lfs */
8618 || (insn & (0x3f << 26)) == 50u << 26 /* lfd */
8619 || (insn & (0x3f << 26)) == 52u << 26 /* stfs */
8620 || (insn & (0x3f << 26)) == 54u << 26 /* stfd */
8621 || ((insn & (0x3f << 26)) == 58u << 26 /* lwa,ld,lmd */
8622 && (insn & 3) != 1)
8623 || ((insn & (0x3f << 26)) == 62u << 26 /* std, stmd */
8624 && ((insn & 3) == 0 || (insn & 3) == 3))
8625 || (insn & (0x3f << 26)) == 12u << 26 /* addic */);
8626}
8627
c5614fa4
AM		 8628/* Examine all relocs referencing .toc sections in order to remove
8629 unused .toc entries. */
8630
8631bfd_boolean
33c0ec9d 8632ppc64_elf_edit_toc (struct bfd_link_info *info)
c5614fa4
AM		 8633{
8634 bfd *ibfd;
8635 struct adjust_toc_info toc_inf;
67f0cbdb 8636 struct ppc_link_hash_table *htab = ppc_hash_table (info);
c5614fa4 8637
67f0cbdb 8638 htab->do_toc_opt = 1;
c5614fa4 8639 toc_inf.global_toc_syms = TRUE;
c72f2fb2 8640 for (ibfd = info->input_bfds; ibfd != NULL; ibfd = ibfd->link.next)
c5614fa4
AM		 8641 {
8642 asection *toc, *sec;
8643 Elf_Internal_Shdr *symtab_hdr;
8644 Elf_Internal_Sym *local_syms;
425b145b 8645 Elf_Internal_Rela *relstart, *rel, *toc_relocs;
c5614fa4
AM		 8646 unsigned long *skip, *drop;
8647 unsigned char *used;
8648 unsigned char *keep, last, some_unused;
8649
854b41e7
AM		 8650 if (!is_ppc64_elf (ibfd))
8651 continue;
8652
c5614fa4
AM		 8653 toc = bfd_get_section_by_name (ibfd, ".toc");
8654 if (toc == NULL
92b7a70f 8655 || toc->size == 0
dbaa2011
AM		 8656 || toc->sec_info_type == SEC_INFO_TYPE_JUST_SYMS
8657 || discarded_section (toc))
c5614fa4
AM		 8658 continue;
8659
425b145b 8660 toc_relocs = NULL;
c5614fa4 8661 local_syms = NULL;
0ffa91dd 8662 symtab_hdr = &elf_symtab_hdr (ibfd);
c5614fa4
AM		 8663
8664 /* Look at sections dropped from the final link. */
8665 skip = NULL;
8666 relstart = NULL;
8667 for (sec = ibfd->sections; sec != NULL; sec = sec->next)
8668 {
8669 if (sec->reloc_count == 0
dbaa2011 8670 || !discarded_section (sec)
c5614fa4
AM		 8671 || get_opd_info (sec)
8672 || (sec->flags & SEC_ALLOC) == 0
8673 || (sec->flags & SEC_DEBUGGING) != 0)
8674 continue;
8675
8676 relstart = _bfd_elf_link_read_relocs (ibfd, sec, NULL, NULL, FALSE);
8677 if (relstart == NULL)
8678 goto error_ret;
8679
8680 /* Run through the relocs to see which toc entries might be
8681 unused. */
8682 for (rel = relstart; rel < relstart + sec->reloc_count; ++rel)
8683 {
8684 enum elf_ppc64_reloc_type r_type;
8685 unsigned long r_symndx;
8686 asection *sym_sec;
8687 struct elf_link_hash_entry *h;
8688 Elf_Internal_Sym *sym;
8689 bfd_vma val;
8690
8691 r_type = ELF64_R_TYPE (rel->r_info);
8692 switch (r_type)
8693 {
8694 default:
8695 continue;
8696
8697 case R_PPC64_TOC16:
8698 case R_PPC64_TOC16_LO:
8699 case R_PPC64_TOC16_HI:
8700 case R_PPC64_TOC16_HA:
8701 case R_PPC64_TOC16_DS:
8702 case R_PPC64_TOC16_LO_DS:
8703 break;
8704 }
8705
8706 r_symndx = ELF64_R_SYM (rel->r_info);
8707 if (!get_sym_h (&h, &sym, &sym_sec, NULL, &local_syms,
8708 r_symndx, ibfd))
8709 goto error_ret;
8710
8711 if (sym_sec != toc)
8712 continue;
8713
8714 if (h != NULL)
8715 val = h->root.u.def.value;
8716 else
8717 val = sym->st_value;
8718 val += rel->r_addend;
8719
8720 if (val >= toc->size)
8721 continue;
8722
8723 /* Anything in the toc ought to be aligned to 8 bytes.
8724 If not, don't mark as unused. */
8725 if (val & 7)
8726 continue;
8727
8728 if (skip == NULL)
8729 {
854b41e7 8730 skip = bfd_zmalloc (sizeof (*skip) * (toc->size + 15) / 8);
c5614fa4
AM		 8731 if (skip == NULL)
8732 goto error_ret;
8733 }
8734
ba761f19 8735 skip[val >> 3] = ref_from_discarded;
c5614fa4
AM		 8736 }
8737
8738 if (elf_section_data (sec)->relocs != relstart)
8739 free (relstart);
8740 }
8741
ba761f19
AM		 8742 /* For largetoc loads of address constants, we can convert
8743 . addis rx,2,addr@got@ha
8744 . ld ry,addr@got@l(rx)
8745 to
8746 . addis rx,2,addr@toc@ha
8747 . addi ry,rx,addr@toc@l
8748 when addr is within 2G of the toc pointer. This then means
8749 that the word storing "addr" in the toc is no longer needed. */
68ffbac6 8750
ba761f19
AM		 8751 if (!ppc64_elf_tdata (ibfd)->has_small_toc_reloc
8752 && toc->output_section->rawsize < (bfd_vma) 1 << 31
8753 && toc->reloc_count != 0)
8754 {
8755 /* Read toc relocs. */
425b145b
AM		 8756 toc_relocs = _bfd_elf_link_read_relocs (ibfd, toc, NULL, NULL,
8757 info->keep_memory);
8758 if (toc_relocs == NULL)
ba761f19
AM		 8759 goto error_ret;
8760
425b145b 8761 for (rel = toc_relocs; rel < toc_relocs + toc->reloc_count; ++rel)
ba761f19
AM		 8762 {
8763 enum elf_ppc64_reloc_type r_type;
8764 unsigned long r_symndx;
8765 asection *sym_sec;
8766 struct elf_link_hash_entry *h;
8767 Elf_Internal_Sym *sym;
8768 bfd_vma val, addr;
8769
8770 r_type = ELF64_R_TYPE (rel->r_info);
8771 if (r_type != R_PPC64_ADDR64)
8772 continue;
8773
8774 r_symndx = ELF64_R_SYM (rel->r_info);
8775 if (!get_sym_h (&h, &sym, &sym_sec, NULL, &local_syms,
8776 r_symndx, ibfd))
8777 goto error_ret;
8778
425b145b 8779 if (sym_sec == NULL
dbaa2011 8780 || discarded_section (sym_sec))
425b145b
AM		 8781 continue;
8782
afe397ea 8783 if (!SYMBOL_REFERENCES_LOCAL (info, h))
ba761f19
AM		 8784 continue;
8785
8786 if (h != NULL)
bddc25c9
AM		 8787 {
8788 if (h->type == STT_GNU_IFUNC)
8789 continue;
8790 val = h->root.u.def.value;
8791 }
ba761f19 8792 else
bddc25c9
AM		 8793 {
8794 if (ELF_ST_TYPE (sym->st_info) == STT_GNU_IFUNC)
8795 continue;
8796 val = sym->st_value;
8797 }
ba761f19
AM		 8798 val += rel->r_addend;
8799 val += sym_sec->output_section->vma + sym_sec->output_offset;
8800
8801 /* We don't yet know the exact toc pointer value, but we
8802 know it will be somewhere in the toc section. Don't
8803 optimize if the difference from any possible toc
8804 pointer is outside [ff..f80008000, 7fff7fff]. */
8805 addr = toc->output_section->vma + TOC_BASE_OFF;
8806 if (val - addr + (bfd_vma) 0x80008000 >= (bfd_vma) 1 << 32)
8807 continue;
8808
8809 addr = toc->output_section->vma + toc->output_section->rawsize;
8810 if (val - addr + (bfd_vma) 0x80008000 >= (bfd_vma) 1 << 32)
8811 continue;
8812
8813 if (skip == NULL)
8814 {
8815 skip = bfd_zmalloc (sizeof (*skip) * (toc->size + 15) / 8);
8816 if (skip == NULL)
8817 goto error_ret;
8818 }
8819
8820 skip[rel->r_offset >> 3]
425b145b 8821 |= can_optimize | ((rel - toc_relocs) << 2);
ba761f19 8822 }
ba761f19
AM		 8823 }
8824
c5614fa4
AM		 8825 if (skip == NULL)
8826 continue;
8827
8828 used = bfd_zmalloc (sizeof (*used) * (toc->size + 7) / 8);
8829 if (used == NULL)
8830 {
8831 error_ret:
8832 if (local_syms != NULL
8833 && symtab_hdr->contents != (unsigned char *) local_syms)
8834 free (local_syms);
8835 if (sec != NULL
8836 && relstart != NULL
8837 && elf_section_data (sec)->relocs != relstart)
8838 free (relstart);
425b145b
AM		 8839 if (toc_relocs != NULL
8840 && elf_section_data (toc)->relocs != toc_relocs)
8841 free (toc_relocs);
c5614fa4
AM		 8842 if (skip != NULL)
8843 free (skip);
8844 return FALSE;
8845 }
8846
30038c59
AM		 8847 /* Now check all kept sections that might reference the toc.
8848 Check the toc itself last. */
8849 for (sec = (ibfd->sections == toc && toc->next ? toc->next
8850 : ibfd->sections);
c5614fa4 8851 sec != NULL;
c5614fa4 8852 sec = (sec == toc ? NULL
c5614fa4 8853 : sec->next == NULL ? toc
30038c59 8854 : sec->next == toc && toc->next ? toc->next
c5614fa4
AM		 8855 : sec->next))
8856 {
8857 int repeat;
8858
8859 if (sec->reloc_count == 0
dbaa2011 8860 || discarded_section (sec)
c5614fa4
AM		 8861 || get_opd_info (sec)
8862 || (sec->flags & SEC_ALLOC) == 0
8863 || (sec->flags & SEC_DEBUGGING) != 0)
8864 continue;
8865
854b41e7
AM		 8866 relstart = _bfd_elf_link_read_relocs (ibfd, sec, NULL, NULL,
8867 info->keep_memory);
c5614fa4 8868 if (relstart == NULL)
2915c55b
JK		 8869 {
8870 free (used);
8871 goto error_ret;
8872 }
c5614fa4
AM		 8873
8874 /* Mark toc entries referenced as used. */
c5614fa4 8875 do
d4f1ee75
AM		 8876 {
8877 repeat = 0;
8878 for (rel = relstart; rel < relstart + sec->reloc_count; ++rel)
8879 {
8880 enum elf_ppc64_reloc_type r_type;
8881 unsigned long r_symndx;
8882 asection *sym_sec;
8883 struct elf_link_hash_entry *h;
8884 Elf_Internal_Sym *sym;
8885 bfd_vma val;
8886 enum {no_check, check_lo, check_ha} insn_check;
98528052 8887
d4f1ee75
AM		 8888 r_type = ELF64_R_TYPE (rel->r_info);
8889 switch (r_type)
8890 {
8891 default:
8892 insn_check = no_check;
8893 break;
98528052 8894
d4f1ee75
AM		 8895 case R_PPC64_GOT_TLSLD16_HA:
8896 case R_PPC64_GOT_TLSGD16_HA:
8897 case R_PPC64_GOT_TPREL16_HA:
8898 case R_PPC64_GOT_DTPREL16_HA:
8899 case R_PPC64_GOT16_HA:
8900 case R_PPC64_TOC16_HA:
8901 insn_check = check_ha;
8902 break;
98528052 8903
d4f1ee75
AM		 8904 case R_PPC64_GOT_TLSLD16_LO:
8905 case R_PPC64_GOT_TLSGD16_LO:
8906 case R_PPC64_GOT_TPREL16_LO_DS:
8907 case R_PPC64_GOT_DTPREL16_LO_DS:
8908 case R_PPC64_GOT16_LO:
8909 case R_PPC64_GOT16_LO_DS:
8910 case R_PPC64_TOC16_LO:
8911 case R_PPC64_TOC16_LO_DS:
8912 insn_check = check_lo;
8913 break;
8914 }
560c8763 8915
d4f1ee75
AM		 8916 if (insn_check != no_check)
8917 {
8918 bfd_vma off = rel->r_offset & ~3;
8919 unsigned char buf[4];
8920 unsigned int insn;
c5614fa4 8921
d4f1ee75
AM		 8922 if (!bfd_get_section_contents (ibfd, sec, buf, off, 4))
8923 {
8924 free (used);
8925 goto error_ret;
8926 }
8927 insn = bfd_get_32 (ibfd, buf);
8928 if (insn_check == check_lo
8929 ? !ok_lo_toc_insn (insn)
8930 : ((insn & ((0x3f << 26) | 0x1f << 16))
8931 != ((15u << 26) | (2 << 16)) /* addis rt,2,imm */))
8932 {
8933 char str[12];
8934
8935 ppc64_elf_tdata (ibfd)->unexpected_toc_insn = 1;
8936 sprintf (str, "%#08x", insn);
8937 info->callbacks->einfo
8938 (_("%P: %H: toc optimization is not supported for"
8939 " %s instruction.\n"),
8940 ibfd, sec, rel->r_offset & ~3, str);
8941 }
8942 }
c5614fa4 8943
d4f1ee75
AM		 8944 switch (r_type)
8945 {
8946 case R_PPC64_TOC16:
8947 case R_PPC64_TOC16_LO:
8948 case R_PPC64_TOC16_HI:
8949 case R_PPC64_TOC16_HA:
8950 case R_PPC64_TOC16_DS:
8951 case R_PPC64_TOC16_LO_DS:
8952 /* In case we're taking addresses of toc entries. */
8953 case R_PPC64_ADDR64:
8954 break;
c5614fa4 8955
d4f1ee75
AM		 8956 default:
8957 continue;
8958 }
c5614fa4 8959
d4f1ee75
AM		 8960 r_symndx = ELF64_R_SYM (rel->r_info);
8961 if (!get_sym_h (&h, &sym, &sym_sec, NULL, &local_syms,
8962 r_symndx, ibfd))
8963 {
8964 free (used);
8965 goto error_ret;
8966 }
c5614fa4 8967
d4f1ee75
AM		 8968 if (sym_sec != toc)
8969 continue;
c5614fa4 8970
d4f1ee75
AM		 8971 if (h != NULL)
8972 val = h->root.u.def.value;
8973 else
8974 val = sym->st_value;
8975 val += rel->r_addend;
ba761f19 8976
d4f1ee75
AM		 8977 if (val >= toc->size)
8978 continue;
ba761f19 8979
d4f1ee75
AM		 8980 if ((skip[val >> 3] & can_optimize) != 0)
8981 {
8982 bfd_vma off;
8983 unsigned char opc;
8984
8985 switch (r_type)
8986 {
8987 case R_PPC64_TOC16_HA:
ba761f19 8988 break;
ba761f19 8989
d4f1ee75
AM		 8990 case R_PPC64_TOC16_LO_DS:
8991 off = rel->r_offset;
8992 off += (bfd_big_endian (ibfd) ? -2 : 3);
8993 if (!bfd_get_section_contents (ibfd, sec, &opc,
8994 off, 1))
8995 {
8996 free (used);
8997 goto error_ret;
8998 }
8999 if ((opc & (0x3f << 2)) == (58u << 2))
9000 break;
9001 /* Fall thru */
ba761f19 9002
d4f1ee75
AM		 9003 default:
9004 /* Wrong sort of reloc, or not a ld. We may
9005 as well clear ref_from_discarded too. */
9006 skip[val >> 3] = 0;
9007 }
9008 }
9009
9010 if (sec != toc)
9011 used[val >> 3] = 1;
9012 /* For the toc section, we only mark as used if this
9013 entry itself isn't unused. */
9014 else if ((used[rel->r_offset >> 3]
9015 || !(skip[rel->r_offset >> 3] & ref_from_discarded))
9016 && !used[val >> 3])
9017 {
9018 /* Do all the relocs again, to catch reference
9019 chains. */
9020 repeat = 1;
9021 used[val >> 3] = 1;
9022 }
9023 }
9024 }
c5614fa4 9025 while (repeat);
854b41e7
AM		 9026
9027 if (elf_section_data (sec)->relocs != relstart)
9028 free (relstart);
c5614fa4
AM		 9029 }
9030
9031 /* Merge the used and skip arrays. Assume that TOC
9032 doublewords not appearing as either used or unused belong
9033 to to an entry more than one doubleword in size. */
9034 for (drop = skip, keep = used, last = 0, some_unused = 0;
9035 drop < skip + (toc->size + 7) / 8;
9036 ++drop, ++keep)
9037 {
9038 if (*keep)
9039 {
ba761f19
AM		 9040 *drop &= ~ref_from_discarded;
9041 if ((*drop & can_optimize) != 0)
9042 some_unused = 1;
c5614fa4
AM		 9043 last = 0;
9044 }
b140b010 9045 else if ((*drop & ref_from_discarded) != 0)
c5614fa4
AM		 9046 {
9047 some_unused = 1;
ba761f19 9048 last = ref_from_discarded;
c5614fa4
AM		 9049 }
9050 else
9051 *drop = last;
9052 }
9053
9054 free (used);
9055
9056 if (some_unused)
9057 {
9058 bfd_byte *contents, *src;
9059 unsigned long off;
d62b3684 9060 Elf_Internal_Sym *sym;
ba761f19 9061 bfd_boolean local_toc_syms = FALSE;
c5614fa4
AM		 9062
9063 /* Shuffle the toc contents, and at the same time convert the
9064 skip array from booleans into offsets. */
9065 if (!bfd_malloc_and_get_section (ibfd, toc, &contents))
9066 goto error_ret;
9067
9068 elf_section_data (toc)->this_hdr.contents = contents;
9069
9070 for (src = contents, off = 0, drop = skip;
9071 src < contents + toc->size;
9072 src += 8, ++drop)
9073 {
ba761f19
AM		 9074 if ((*drop & (can_optimize | ref_from_discarded)) != 0)
9075 off += 8;
c5614fa4
AM		 9076 else if (off != 0)
9077 {
9078 *drop = off;
9079 memcpy (src - off, src, 8);
9080 }
9081 }
854b41e7 9082 *drop = off;
c5614fa4
AM		 9083 toc->rawsize = toc->size;
9084 toc->size = src - contents - off;
9085
ba761f19
AM		 9086 /* Adjust addends for relocs against the toc section sym,
9087 and optimize any accesses we can. */
c5614fa4
AM		 9088 for (sec = ibfd->sections; sec != NULL; sec = sec->next)
9089 {
9090 if (sec->reloc_count == 0
dbaa2011 9091 || discarded_section (sec))
c5614fa4
AM		 9092 continue;
9093
9094 relstart = _bfd_elf_link_read_relocs (ibfd, sec, NULL, NULL,
854b41e7 9095 info->keep_memory);
c5614fa4
AM		 9096 if (relstart == NULL)
9097 goto error_ret;
9098
9099 for (rel = relstart; rel < relstart + sec->reloc_count; ++rel)
9100 {
9101 enum elf_ppc64_reloc_type r_type;
9102 unsigned long r_symndx;
9103 asection *sym_sec;
9104 struct elf_link_hash_entry *h;
854b41e7 9105 bfd_vma val;
c5614fa4
AM		 9106
9107 r_type = ELF64_R_TYPE (rel->r_info);
9108 switch (r_type)
9109 {
9110 default:
9111 continue;
9112
9113 case R_PPC64_TOC16:
9114 case R_PPC64_TOC16_LO:
9115 case R_PPC64_TOC16_HI:
9116 case R_PPC64_TOC16_HA:
9117 case R_PPC64_TOC16_DS:
9118 case R_PPC64_TOC16_LO_DS:
9119 case R_PPC64_ADDR64:
9120 break;
9121 }
9122
9123 r_symndx = ELF64_R_SYM (rel->r_info);
9124 if (!get_sym_h (&h, &sym, &sym_sec, NULL, &local_syms,
9125 r_symndx, ibfd))
9126 goto error_ret;
9127
ba761f19 9128 if (sym_sec != toc)
c5614fa4
AM		 9129 continue;
9130
ba761f19
AM		 9131 if (h != NULL)
9132 val = h->root.u.def.value;
9133 else
9134 {
9135 val = sym->st_value;
9136 if (val != 0)
9137 local_toc_syms = TRUE;
9138 }
9139
9140 val += rel->r_addend;
854b41e7
AM		 9141
9142 if (val > toc->rawsize)
9143 val = toc->rawsize;
ba761f19
AM		 9144 else if ((skip[val >> 3] & ref_from_discarded) != 0)
9145 continue;
9146 else if ((skip[val >> 3] & can_optimize) != 0)
9147 {
9148 Elf_Internal_Rela *tocrel
425b145b 9149 = toc_relocs + (skip[val >> 3] >> 2);
ba761f19
AM		 9150 unsigned long tsym = ELF64_R_SYM (tocrel->r_info);
9151
9152 switch (r_type)
9153 {
9154 case R_PPC64_TOC16_HA:
9155 rel->r_info = ELF64_R_INFO (tsym, R_PPC64_TOC16_HA);
9156 break;
9157
9158 case R_PPC64_TOC16_LO_DS:
9159 rel->r_info = ELF64_R_INFO (tsym, R_PPC64_LO_DS_OPT);
9160 break;
9161
9162 default:
28942f62
AM		 9163 if (!ppc64_elf_howto_table[R_PPC64_ADDR32])
9164 ppc_howto_init ();
b140b010 9165 info->callbacks->einfo
bc30df16 9166 (_("%P: %H: %s references "
b140b010
AM		 9167 "optimized away TOC entry\n"),
9168 ibfd, sec, rel->r_offset,
9169 ppc64_elf_howto_table[r_type]->name);
9170 bfd_set_error (bfd_error_bad_value);
9171 goto error_ret;
ba761f19
AM		 9172 }
9173 rel->r_addend = tocrel->r_addend;
9174 elf_section_data (sec)->relocs = relstart;
9175 continue;
9176 }
9177
9178 if (h != NULL || sym->st_value != 0)
9179 continue;
854b41e7
AM		 9180
9181 rel->r_addend -= skip[val >> 3];
9182 elf_section_data (sec)->relocs = relstart;
c5614fa4 9183 }
854b41e7
AM		 9184
9185 if (elf_section_data (sec)->relocs != relstart)
9186 free (relstart);
c5614fa4
AM		 9187 }
9188
9189 /* We shouldn't have local or global symbols defined in the TOC,
9190 but handle them anyway. */
df22d223
AM		 9191 if (local_syms != NULL)
9192 for (sym = local_syms;
9193 sym < local_syms + symtab_hdr->sh_info;
9194 ++sym)
9195 if (sym->st_value != 0
9196 && bfd_section_from_elf_index (ibfd, sym->st_shndx) == toc)
9197 {
9198 unsigned long i;
854b41e7 9199
df22d223
AM		 9200 if (sym->st_value > toc->rawsize)
9201 i = toc->rawsize >> 3;
9202 else
9203 i = sym->st_value >> 3;
854b41e7 9204
df22d223
AM		 9205 if ((skip[i] & (ref_from_discarded | can_optimize)) != 0)
9206 {
9207 if (local_toc_syms)
9208 (*_bfd_error_handler)
9209 (_("%s defined on removed toc entry"),
9210 bfd_elf_sym_name (ibfd, symtab_hdr, sym, NULL));
9211 do
9212 ++i;
9213 while ((skip[i] & (ref_from_discarded | can_optimize)));
9214 sym->st_value = (bfd_vma) i << 3;
9215 }
d62b3684 9216
df22d223
AM		 9217 sym->st_value -= skip[i];
9218 symtab_hdr->contents = (unsigned char *) local_syms;
9219 }
c5614fa4 9220
854b41e7 9221 /* Adjust any global syms defined in this toc input section. */
c5614fa4
AM		 9222 if (toc_inf.global_toc_syms)
9223 {
9224 toc_inf.toc = toc;
9225 toc_inf.skip = skip;
9226 toc_inf.global_toc_syms = FALSE;
9227 elf_link_hash_traverse (elf_hash_table (info), adjust_toc_syms,
9228 &toc_inf);
9229 }
854b41e7
AM		 9230
9231 if (toc->reloc_count != 0)
9232 {
d4730f92 9233 Elf_Internal_Shdr *rel_hdr;
854b41e7
AM		 9234 Elf_Internal_Rela *wrel;
9235 bfd_size_type sz;
9236
854b41e7 9237 /* Remove unused toc relocs, and adjust those we keep. */
28be611c
AM		 9238 if (toc_relocs == NULL)
9239 toc_relocs = _bfd_elf_link_read_relocs (ibfd, toc, NULL, NULL,
9240 info->keep_memory);
9241 if (toc_relocs == NULL)
9242 goto error_ret;
9243
425b145b
AM		 9244 wrel = toc_relocs;
9245 for (rel = toc_relocs; rel < toc_relocs + toc->reloc_count; ++rel)
ba761f19
AM		 9246 if ((skip[rel->r_offset >> 3]
9247 & (ref_from_discarded | can_optimize)) == 0)
854b41e7
AM		 9248 {
9249 wrel->r_offset = rel->r_offset - skip[rel->r_offset >> 3];
9250 wrel->r_info = rel->r_info;
9251 wrel->r_addend = rel->r_addend;
9252 ++wrel;
9253 }
9254 else if (!dec_dynrel_count (rel->r_info, toc, info,
9255 &local_syms, NULL, NULL))
9256 goto error_ret;
9257
425b145b
AM		 9258 elf_section_data (toc)->relocs = toc_relocs;
9259 toc->reloc_count = wrel - toc_relocs;
d4730f92
BS		 9260 rel_hdr = _bfd_elf_single_rel_hdr (toc);
9261 sz = rel_hdr->sh_entsize;
9262 rel_hdr->sh_size = toc->reloc_count * sz;
854b41e7 9263 }
c5614fa4 9264 }
28be611c
AM		 9265 else if (toc_relocs != NULL
9266 && elf_section_data (toc)->relocs != toc_relocs)
425b145b 9267 free (toc_relocs);
c5614fa4
AM		 9268
9269 if (local_syms != NULL
9270 && symtab_hdr->contents != (unsigned char *) local_syms)
9271 {
9272 if (!info->keep_memory)
9273 free (local_syms);
9274 else
9275 symtab_hdr->contents = (unsigned char *) local_syms;
9276 }
9277 free (skip);
9278 }
9279
9280 return TRUE;
9281}
9282
1bbe0902
AM		 9283/* Return true iff input section I references the TOC using
9284 instructions limited to +/-32k offsets. */
9285
9286bfd_boolean
9287ppc64_elf_has_small_toc_reloc (asection *i)
9288{
9289 return (is_ppc64_elf (i->owner)
9290 && ppc64_elf_tdata (i->owner)->has_small_toc_reloc);
9291}
9292
927be08e
AM		 9293/* Allocate space for one GOT entry. */
9294
9295static void
9296allocate_got (struct elf_link_hash_entry *h,
9297 struct bfd_link_info *info,
9298 struct got_entry *gent)
9299{
9300 struct ppc_link_hash_table *htab = ppc_hash_table (info);
9301 bfd_boolean dyn;
9302 struct ppc_link_hash_entry *eh = (struct ppc_link_hash_entry *) h;
9303 int entsize = (gent->tls_type & eh->tls_mask & (TLS_GD | TLS_LD)
9304 ? 16 : 8);
9305 int rentsize = (gent->tls_type & eh->tls_mask & TLS_GD
9306 ? 2 : 1) * sizeof (Elf64_External_Rela);
9307 asection *got = ppc64_elf_tdata (gent->owner)->got;
9308
9309 gent->got.offset = got->size;
9310 got->size += entsize;
9311
9312 dyn = htab->elf.dynamic_sections_created;
19e08130 9313 if (h->type == STT_GNU_IFUNC)
927be08e 9314 {
33e44f2e 9315 htab->elf.irelplt->size += rentsize;
19e08130 9316 htab->got_reli_size += rentsize;
927be08e 9317 }
19e08130
AM		 9318 else if ((info->shared
9319 || WILL_CALL_FINISH_DYNAMIC_SYMBOL (dyn, 0, h))
9320 && (ELF_ST_VISIBILITY (h->other) == STV_DEFAULT
9321 || h->root.type != bfd_link_hash_undefweak))
927be08e 9322 {
19e08130 9323 asection *relgot = ppc64_elf_tdata (gent->owner)->relgot;
927be08e 9324 relgot->size += rentsize;
927be08e
AM		 9325 }
9326}
9327
7865406b
AM		 9328/* This function merges got entries in the same toc group. */
9329
9330static void
9331merge_got_entries (struct got_entry **pent)
9332{
9333 struct got_entry *ent, *ent2;
9334
9335 for (ent = *pent; ent != NULL; ent = ent->next)
9336 if (!ent->is_indirect)
9337 for (ent2 = ent->next; ent2 != NULL; ent2 = ent2->next)
9338 if (!ent2->is_indirect
9339 && ent2->addend == ent->addend
9340 && ent2->tls_type == ent->tls_type
9341 && elf_gp (ent2->owner) == elf_gp (ent->owner))
9342 {
9343 ent2->is_indirect = TRUE;
9344 ent2->got.ent = ent;
9345 }
9346}
9347
65f38f15
AM		 9348/* Allocate space in .plt, .got and associated reloc sections for
9349 dynamic relocs. */
5bd4f169 9350
b34976b6 9351static bfd_boolean
4ce794b7 9352allocate_dynrelocs (struct elf_link_hash_entry *h, void *inf)
5bd4f169 9353{
65f38f15
AM		 9354 struct bfd_link_info *info;
9355 struct ppc_link_hash_table *htab;
5bd4f169 9356 asection *s;
65f38f15 9357 struct ppc_link_hash_entry *eh;
6061a67d 9358 struct elf_dyn_relocs *p;
0b8bcf0d 9359 struct got_entry **pgent, *gent;
5bd4f169 9360
e92d460e 9361 if (h->root.type == bfd_link_hash_indirect)
b34976b6 9362 return TRUE;
5bd4f169 9363
65f38f15
AM		 9364 info = (struct bfd_link_info *) inf;
9365 htab = ppc_hash_table (info);
4dfe6ac6
NC		 9366 if (htab == NULL)
9367 return FALSE;
5bd4f169 9368
e054468f
AM		 9369 if ((htab->elf.dynamic_sections_created
9370 && h->dynindx != -1
9371 && WILL_CALL_FINISH_DYNAMIC_SYMBOL (1, info->shared, h))
9372 || h->type == STT_GNU_IFUNC)
5bd4f169 9373 {
411e1bfb
AM		 9374 struct plt_entry *pent;
9375 bfd_boolean doneone = FALSE;
9376 for (pent = h->plt.plist; pent != NULL; pent = pent->next)
9377 if (pent->plt.refcount > 0)
9378 {
25f23106
AM		 9379 if (!htab->elf.dynamic_sections_created
9380 || h->dynindx == -1)
e054468f 9381 {
33e44f2e 9382 s = htab->elf.iplt;
e054468f 9383 pent->plt.offset = s->size;
b9e5796b 9384 s->size += PLT_ENTRY_SIZE (htab);
33e44f2e 9385 s = htab->elf.irelplt;
e054468f
AM		 9386 }
9387 else
9388 {
9389 /* If this is the first .plt entry, make room for the special
9390 first entry. */
33e44f2e 9391 s = htab->elf.splt;
e054468f 9392 if (s->size == 0)
b9e5796b 9393 s->size += PLT_INITIAL_ENTRY_SIZE (htab);
e054468f
AM		 9394
9395 pent->plt.offset = s->size;
9396
9397 /* Make room for this entry. */
b9e5796b 9398 s->size += PLT_ENTRY_SIZE (htab);
e054468f
AM		 9399
9400 /* Make room for the .glink code. */
9401 s = htab->glink;
9402 if (s->size == 0)
9403 s->size += GLINK_CALL_STUB_SIZE;
b9e5796b
AM		 9404 if (htab->opd_abi)
9405 {
9406 /* We need bigger stubs past index 32767. */
9407 if (s->size >= GLINK_CALL_STUB_SIZE + 32768*2*4)
9408 s->size += 4;
9409 s->size += 2*4;
9410 }
9411 else
e054468f 9412 s->size += 4;
e054468f
AM		 9413
9414 /* We also need to make an entry in the .rela.plt section. */
33e44f2e 9415 s = htab->elf.srelplt;
e054468f 9416 }
eea6121a 9417 s->size += sizeof (Elf64_External_Rela);
411e1bfb
AM		 9418 doneone = TRUE;
9419 }
9420 else
9421 pent->plt.offset = (bfd_vma) -1;
9422 if (!doneone)
65f38f15 9423 {
411e1bfb 9424 h->plt.plist = NULL;
f5385ebf 9425 h->needs_plt = 0;
65f38f15
AM		 9426 }
9427 }
9428 else
9429 {
411e1bfb 9430 h->plt.plist = NULL;
f5385ebf 9431 h->needs_plt = 0;
65f38f15
AM		 9432 }
9433
951fd09b
AM		 9434 eh = (struct ppc_link_hash_entry *) h;
9435 /* Run through the TLS GD got entries first if we're changing them
9436 to TPREL. */
e7b938ca 9437 if ((eh->tls_mask & TLS_TPRELGD) != 0)
951fd09b
AM		 9438 for (gent = h->got.glist; gent != NULL; gent = gent->next)
9439 if (gent->got.refcount > 0
9440 && (gent->tls_type & TLS_GD) != 0)
9441 {
9442 /* This was a GD entry that has been converted to TPREL. If
9443 there happens to be a TPREL entry we can use that one. */
9444 struct got_entry *ent;
9445 for (ent = h->got.glist; ent != NULL; ent = ent->next)
9446 if (ent->got.refcount > 0
9447 && (ent->tls_type & TLS_TPREL) != 0
e717da7e
AM		 9448 && ent->addend == gent->addend
9449 && ent->owner == gent->owner)
951fd09b
AM		 9450 {
9451 gent->got.refcount = 0;
9452 break;
9453 }
9454
9455 /* If not, then we'll be using our own TPREL entry. */
9456 if (gent->got.refcount != 0)
9457 gent->tls_type = TLS_TLS | TLS_TPREL;
9458 }
9459
7865406b
AM		 9460 /* Remove any list entry that won't generate a word in the GOT before
9461 we call merge_got_entries. Otherwise we risk merging to empty
9462 entries. */
0b8bcf0d
AM		 9463 pgent = &h->got.glist;
9464 while ((gent = *pgent) != NULL)
411e1bfb 9465 if (gent->got.refcount > 0)
7865406b
AM		 9466 {
9467 if ((gent->tls_type & TLS_LD) != 0
9468 && !h->def_dynamic)
9469 {
9470 ppc64_tlsld_got (gent->owner)->got.refcount += 1;
9471 *pgent = gent->next;
9472 }
9473 else
9474 pgent = &gent->next;
9475 }
9476 else
9477 *pgent = gent->next;
9478
9479 if (!htab->do_multi_toc)
9480 merge_got_entries (&h->got.glist);
9481
9482 for (gent = h->got.glist; gent != NULL; gent = gent->next)
9483 if (!gent->is_indirect)
411e1bfb
AM		 9484 {
9485 /* Make sure this symbol is output as a dynamic symbol.
951fd09b
AM		 9486 Undefined weak syms won't yet be marked as dynamic,
9487 nor will all TLS symbols. */
411e1bfb 9488 if (h->dynindx == -1
b099ab9f 9489 && !h->forced_local
25f23106 9490 && h->type != STT_GNU_IFUNC
b099ab9f 9491 && htab->elf.dynamic_sections_created)
411e1bfb 9492 {
c152c796 9493 if (! bfd_elf_link_record_dynamic_symbol (info, h))
411e1bfb
AM		 9494 return FALSE;
9495 }
65f38f15 9496
0c8d6e5c 9497 if (!is_ppc64_elf (gent->owner))
927be08e 9498 abort ();
0ffa91dd 9499
927be08e 9500 allocate_got (h, info, gent);
411e1bfb 9501 }
65f38f15 9502
b099ab9f 9503 if (eh->dyn_relocs == NULL
25f23106 9504 || (!htab->elf.dynamic_sections_created
14b5f73f 9505 && h->type != STT_GNU_IFUNC))
b34976b6 9506 return TRUE;
65f38f15
AM		 9507
9508 /* In the shared -Bsymbolic case, discard space allocated for
9509 dynamic pc-relative relocs against symbols which turn out to be
9510 defined in regular objects. For the normal shared case, discard
9511 space for relocs that have become local due to symbol visibility
9512 changes. */
9513
9514 if (info->shared)
9515 {
9c7a29a3 9516 /* Relocs that use pc_count are those that appear on a call insn,
1d483afe 9517 or certain REL relocs (see must_be_dyn_reloc) that can be
9c7a29a3
AM		 9518 generated via assembly. We want calls to protected symbols to
9519 resolve directly to the function rather than going via the plt.
9520 If people want function pointer comparisons to work as expected
9521 then they should avoid writing weird assembly. */
09695f56 9522 if (SYMBOL_CALLS_LOCAL (info, h))
65f38f15 9523 {
6061a67d 9524 struct elf_dyn_relocs **pp;
65f38f15
AM		 9525
9526 for (pp = &eh->dyn_relocs; (p = *pp) != NULL; )
5bd4f169 9527 {
65f38f15
AM		 9528 p->count -= p->pc_count;
9529 p->pc_count = 0;
9530 if (p->count == 0)
9531 *pp = p->next;
9532 else
9533 pp = &p->next;
5bd4f169 9534 }
65f38f15 9535 }
4e795f50
AM		 9536
9537 /* Also discard relocs on undefined weak syms with non-default
9538 visibility. */
cab87ef9
AM		 9539 if (eh->dyn_relocs != NULL
9540 && h->root.type == bfd_link_hash_undefweak)
dfbb6ac9
AM		 9541 {
9542 if (ELF_ST_VISIBILITY (h->other) != STV_DEFAULT)
9543 eh->dyn_relocs = NULL;
9544
9545 /* Make sure this symbol is output as a dynamic symbol.
9546 Undefined weak syms won't yet be marked as dynamic. */
9547 else if (h->dynindx == -1
9548 && !h->forced_local)
9549 {
9550 if (! bfd_elf_link_record_dynamic_symbol (info, h))
9551 return FALSE;
9552 }
9553 }
65f38f15 9554 }
25f23106
AM		 9555 else if (h->type == STT_GNU_IFUNC)
9556 {
9557 if (!h->non_got_ref)
9558 eh->dyn_relocs = NULL;
9559 }
f4656909 9560 else if (ELIMINATE_COPY_RELOCS)
65f38f15
AM		 9561 {
9562 /* For the non-shared case, discard space for relocs against
9563 symbols which turn out to need copy relocs or are not
9564 dynamic. */
9565
f5385ebf 9566 if (!h->non_got_ref
f5385ebf 9567 && !h->def_regular)
65f38f15
AM		 9568 {
9569 /* Make sure this symbol is output as a dynamic symbol.
9570 Undefined weak syms won't yet be marked as dynamic. */
9571 if (h->dynindx == -1
f5385ebf 9572 && !h->forced_local)
65f38f15 9573 {
c152c796 9574 if (! bfd_elf_link_record_dynamic_symbol (info, h))
b34976b6 9575 return FALSE;
65f38f15
AM		 9576 }
9577
9578 /* If that succeeded, we know we'll be keeping all the
9579 relocs. */
9580 if (h->dynindx != -1)
9581 goto keep;
9582 }
9583
9584 eh->dyn_relocs = NULL;
9585
ec338859 9586 keep: ;
65f38f15
AM		 9587 }
9588
9589 /* Finally, allocate space. */
9590 for (p = eh->dyn_relocs; p != NULL; p = p->next)
9591 {
9592 asection *sreloc = elf_section_data (p->sec)->sreloc;
19e08130 9593 if (eh->elf.type == STT_GNU_IFUNC)
33e44f2e 9594 sreloc = htab->elf.irelplt;
eea6121a 9595 sreloc->size += p->count * sizeof (Elf64_External_Rela);
65f38f15
AM		 9596 }
9597
b34976b6 9598 return TRUE;
65f38f15
AM		 9599}
9600
a345bc8d
AM		 9601/* Called via elf_link_hash_traverse from ppc64_elf_size_dynamic_sections
9602 to set up space for global entry stubs. These are put in glink,
9603 after the branch table. */
65f38f15 9604
b34976b6 9605static bfd_boolean
a345bc8d 9606size_global_entry_stubs (struct elf_link_hash_entry *h, void *inf)
65f38f15 9607{
a345bc8d
AM		 9608 struct bfd_link_info *info;
9609 struct ppc_link_hash_table *htab;
9610 struct plt_entry *pent;
9611 asection *s;
65f38f15 9612
a345bc8d
AM		 9613 if (h->root.type == bfd_link_hash_indirect)
9614 return TRUE;
65f38f15 9615
a345bc8d
AM		 9616 if (!h->pointer_equality_needed)
9617 return TRUE;
65f38f15 9618
a345bc8d
AM		 9619 if (h->def_regular)
9620 return TRUE;
65f38f15 9621
a345bc8d
AM		 9622 info = inf;
9623 htab = ppc_hash_table (info);
9624 if (htab == NULL)
9625 return FALSE;
9626
9627 s = htab->glink;
9628 for (pent = h->plt.plist; pent != NULL; pent = pent->next)
9629 if (pent->plt.offset != (bfd_vma) -1
9630 && pent->addend == 0)
9631 {
afe397ea
AM		 9632 /* For ELFv2, if this symbol is not defined in a regular file
9633 and we are not generating a shared library or pie, then we
9634 need to define the symbol in the executable on a call stub.
9635 This is to avoid text relocations. */
a345bc8d 9636 s->size = (s->size + 15) & -16;
afe397ea
AM		 9637 h->root.u.def.section = s;
9638 h->root.u.def.value = s->size;
a345bc8d
AM		 9639 s->size += 16;
9640 break;
9641 }
9642 return TRUE;
9643}
9644
9645/* Set DF_TEXTREL if we find any dynamic relocs that apply to
9646 read-only sections. */
9647
9648static bfd_boolean
9649maybe_set_textrel (struct elf_link_hash_entry *h, void *info)
9650{
9651 if (h->root.type == bfd_link_hash_indirect)
9652 return TRUE;
9653
9654 if (readonly_dynrelocs (h))
9655 {
9656 ((struct bfd_link_info *) info)->flags |= DF_TEXTREL;
9657
9658 /* Not an error, just cut short the traversal. */
9659 return FALSE;
65f38f15 9660 }
b34976b6 9661 return TRUE;
65f38f15
AM		 9662}
9663
9664/* Set the sizes of the dynamic sections. */
9665
b34976b6 9666static bfd_boolean
ee67d69a 9667ppc64_elf_size_dynamic_sections (bfd *output_bfd,
4ce794b7 9668 struct bfd_link_info *info)
65f38f15
AM		 9669{
9670 struct ppc_link_hash_table *htab;
9671 bfd *dynobj;
9672 asection *s;
b34976b6 9673 bfd_boolean relocs;
65f38f15 9674 bfd *ibfd;
7865406b 9675 struct got_entry *first_tlsld;
65f38f15
AM		 9676
9677 htab = ppc_hash_table (info);
4dfe6ac6
NC		 9678 if (htab == NULL)
9679 return FALSE;
9680
65f38f15
AM		 9681 dynobj = htab->elf.dynobj;
9682 if (dynobj == NULL)
9683 abort ();
9684
9685 if (htab->elf.dynamic_sections_created)
9686 {
9687 /* Set the contents of the .interp section to the interpreter. */
36af4a4e 9688 if (info->executable)
65f38f15 9689 {
3d4d4302 9690 s = bfd_get_linker_section (dynobj, ".interp");
65f38f15
AM		 9691 if (s == NULL)
9692 abort ();
eea6121a 9693 s->size = sizeof ELF_DYNAMIC_INTERPRETER;
65f38f15
AM		 9694 s->contents = (unsigned char *) ELF_DYNAMIC_INTERPRETER;
9695 }
9696 }
9697
9698 /* Set up .got offsets for local syms, and space for local dynamic
9699 relocs. */
c72f2fb2 9700 for (ibfd = info->input_bfds; ibfd != NULL; ibfd = ibfd->link.next)
65f38f15 9701 {
411e1bfb
AM		 9702 struct got_entry **lgot_ents;
9703 struct got_entry **end_lgot_ents;
e054468f
AM		 9704 struct plt_entry **local_plt;
9705 struct plt_entry **end_local_plt;
f961d9dd 9706 unsigned char *lgot_masks;
65f38f15
AM		 9707 bfd_size_type locsymcount;
9708 Elf_Internal_Shdr *symtab_hdr;
65f38f15 9709
0c8d6e5c 9710 if (!is_ppc64_elf (ibfd))
65f38f15
AM		 9711 continue;
9712
9713 for (s = ibfd->sections; s != NULL; s = s->next)
9714 {
19e08130 9715 struct ppc_dyn_relocs *p;
65f38f15 9716
6edfbbad 9717 for (p = elf_section_data (s)->local_dynrel; p != NULL; p = p->next)
65f38f15 9718 {
ec338859
AM		 9719 if (!bfd_is_abs_section (p->sec)
9720 && bfd_is_abs_section (p->sec->output_section))
9721 {
9722 /* Input section has been discarded, either because
9723 it is a copy of a linkonce section or due to
9724 linker script /DISCARD/, so we'll be discarding
9725 the relocs too. */
9726 }
248866a8 9727 else if (p->count != 0)
ec338859 9728 {
19e08130
AM		 9729 asection *srel = elf_section_data (p->sec)->sreloc;
9730 if (p->ifunc)
33e44f2e 9731 srel = htab->elf.irelplt;
eea6121a 9732 srel->size += p->count * sizeof (Elf64_External_Rela);
248866a8
AM		 9733 if ((p->sec->output_section->flags & SEC_READONLY) != 0)
9734 info->flags |= DF_TEXTREL;
ec338859 9735 }
65f38f15
AM		 9736 }
9737 }
9738
411e1bfb
AM		 9739 lgot_ents = elf_local_got_ents (ibfd);
9740 if (!lgot_ents)
65f38f15
AM		 9741 continue;
9742
0ffa91dd 9743 symtab_hdr = &elf_symtab_hdr (ibfd);
65f38f15 9744 locsymcount = symtab_hdr->sh_info;
411e1bfb 9745 end_lgot_ents = lgot_ents + locsymcount;
e054468f
AM		 9746 local_plt = (struct plt_entry **) end_lgot_ents;
9747 end_local_plt = local_plt + locsymcount;
f961d9dd 9748 lgot_masks = (unsigned char *) end_local_plt;
e717da7e 9749 s = ppc64_elf_tdata (ibfd)->got;
e7b938ca 9750 for (; lgot_ents < end_lgot_ents; ++lgot_ents, ++lgot_masks)
65f38f15 9751 {
0b8bcf0d 9752 struct got_entry **pent, *ent;
411e1bfb 9753
0b8bcf0d
AM		 9754 pent = lgot_ents;
9755 while ((ent = *pent) != NULL)
411e1bfb
AM		 9756 if (ent->got.refcount > 0)
9757 {
e7b938ca 9758 if ((ent->tls_type & *lgot_masks & TLS_LD) != 0)
411e1bfb 9759 {
927be08e 9760 ppc64_tlsld_got (ibfd)->got.refcount += 1;
0b8bcf0d 9761 *pent = ent->next;
411e1bfb
AM		 9762 }
9763 else
9764 {
19e08130
AM		 9765 unsigned int ent_size = 8;
9766 unsigned int rel_size = sizeof (Elf64_External_Rela);
9767
eea6121a 9768 ent->got.offset = s->size;
e7b938ca 9769 if ((ent->tls_type & *lgot_masks & TLS_GD) != 0)
927be08e 9770 {
19e08130
AM		 9771 ent_size *= 2;
9772 rel_size *= 2;
9773 }
9774 s->size += ent_size;
9775 if ((*lgot_masks & PLT_IFUNC) != 0)
9776 {
33e44f2e 9777 htab->elf.irelplt->size += rel_size;
19e08130
AM		 9778 htab->got_reli_size += rel_size;
9779 }
9780 else if (info->shared)
9781 {
9782 asection *srel = ppc64_elf_tdata (ibfd)->relgot;
9783 srel->size += rel_size;
927be08e 9784 }
0b8bcf0d 9785 pent = &ent->next;
411e1bfb
AM		 9786 }
9787 }
9788 else
0b8bcf0d 9789 *pent = ent->next;
65f38f15 9790 }
e054468f
AM		 9791
9792 /* Allocate space for calls to local STT_GNU_IFUNC syms in .iplt. */
9793 for (; local_plt < end_local_plt; ++local_plt)
9794 {
9795 struct plt_entry *ent;
9796
9797 for (ent = *local_plt; ent != NULL; ent = ent->next)
9798 if (ent->plt.refcount > 0)
9799 {
33e44f2e 9800 s = htab->elf.iplt;
e054468f 9801 ent->plt.offset = s->size;
b9e5796b 9802 s->size += PLT_ENTRY_SIZE (htab);
e054468f 9803
33e44f2e 9804 htab->elf.irelplt->size += sizeof (Elf64_External_Rela);
e054468f
AM		 9805 }
9806 else
9807 ent->plt.offset = (bfd_vma) -1;
9808 }
65f38f15
AM		 9809 }
9810
9811 /* Allocate global sym .plt and .got entries, and space for global
9812 sym dynamic relocs. */
4ce794b7 9813 elf_link_hash_traverse (&htab->elf, allocate_dynrelocs, info);
a345bc8d
AM		 9814 /* Stash the end of glink branch table. */
9815 if (htab->glink != NULL)
9816 htab->glink->rawsize = htab->glink->size;
9817
9818 if (!htab->opd_abi && !info->shared)
9819 elf_link_hash_traverse (&htab->elf, size_global_entry_stubs, info);
65f38f15 9820
7865406b 9821 first_tlsld = NULL;
c72f2fb2 9822 for (ibfd = info->input_bfds; ibfd != NULL; ibfd = ibfd->link.next)
102890f0 9823 {
7865406b
AM		 9824 struct got_entry *ent;
9825
0c8d6e5c 9826 if (!is_ppc64_elf (ibfd))
102890f0
AM		 9827 continue;
9828
7865406b
AM		 9829 ent = ppc64_tlsld_got (ibfd);
9830 if (ent->got.refcount > 0)
102890f0 9831 {
7865406b 9832 if (!htab->do_multi_toc && first_tlsld != NULL)
102890f0 9833 {
7865406b
AM		 9834 ent->is_indirect = TRUE;
9835 ent->got.ent = first_tlsld;
9836 }
9837 else
9838 {
9839 if (first_tlsld == NULL)
9840 first_tlsld = ent;
9841 s = ppc64_elf_tdata (ibfd)->got;
9842 ent->got.offset = s->size;
9843 ent->owner = ibfd;
9844 s->size += 16;
9845 if (info->shared)
9846 {
9847 asection *srel = ppc64_elf_tdata (ibfd)->relgot;
9848 srel->size += sizeof (Elf64_External_Rela);
9849 }
102890f0
AM		 9850 }
9851 }
9852 else
7865406b 9853 ent->got.offset = (bfd_vma) -1;
102890f0
AM		 9854 }
9855
65f38f15
AM		 9856 /* We now have determined the sizes of the various dynamic sections.
9857 Allocate memory for them. */
b34976b6 9858 relocs = FALSE;
65f38f15
AM		 9859 for (s = dynobj->sections; s != NULL; s = s->next)
9860 {
9861 if ((s->flags & SEC_LINKER_CREATED) == 0)
9862 continue;
9863
4ce794b7 9864 if (s == htab->brlt || s == htab->relbrlt)
721956f4
AM		 9865 /* These haven't been allocated yet; don't strip. */
9866 continue;
33e44f2e
AM		 9867 else if (s == htab->elf.sgot
9868 || s == htab->elf.splt
9869 || s == htab->elf.iplt
c456f082
AM		 9870 || s == htab->glink
9871 || s == htab->dynbss)
65f38f15
AM		 9872 {
9873 /* Strip this section if we don't need it; see the
9874 comment below. */
5bd4f169 9875 }
58d180e8
AM		 9876 else if (s == htab->glink_eh_frame)
9877 {
9878 if (!bfd_is_abs_section (s->output_section))
9879 /* Not sized yet. */
9880 continue;
9881 }
70cc837d 9882 else if (CONST_STRNEQ (s->name, ".rela"))
5bd4f169 9883 {
c456f082 9884 if (s->size != 0)
5bd4f169 9885 {
33e44f2e 9886 if (s != htab->elf.srelplt)
b34976b6 9887 relocs = TRUE;
5bd4f169
AM		 9888
9889 /* We use the reloc_count field as a counter if we need
9890 to copy relocs into the output file. */
9891 s->reloc_count = 0;
9892 }
9893 }
65f38f15 9894 else
5bd4f169
AM		 9895 {
9896 /* It's not one of our sections, so don't allocate space. */
9897 continue;
9898 }
9899
eea6121a 9900 if (s->size == 0)
5bd4f169 9901 {
c456f082
AM		 9902 /* If we don't need this section, strip it from the
9903 output file. This is mostly to handle .rela.bss and
9904 .rela.plt. We must create both sections in
9905 create_dynamic_sections, because they must be created
9906 before the linker maps input sections to output
9907 sections. The linker does that before
9908 adjust_dynamic_symbol is called, and it is that
9909 function which decides whether anything needs to go
9910 into these sections. */
8423293d 9911 s->flags |= SEC_EXCLUDE;
5bd4f169
AM		 9912 continue;
9913 }
9914
c456f082 9915 if ((s->flags & SEC_HAS_CONTENTS) == 0)
5f333394
AM		 9916 continue;
9917
65f38f15
AM		 9918 /* Allocate memory for the section contents. We use bfd_zalloc
9919 here in case unused entries are not reclaimed before the
9920 section's contents are written out. This should not happen,
411e1bfb
AM		 9921 but this way if it does we get a R_PPC64_NONE reloc in .rela
9922 sections instead of garbage.
9923 We also rely on the section contents being zero when writing
9924 the GOT. */
eea6121a 9925 s->contents = bfd_zalloc (dynobj, s->size);
65f38f15 9926 if (s->contents == NULL)
b34976b6 9927 return FALSE;
5bd4f169
AM		 9928 }
9929
c72f2fb2 9930 for (ibfd = info->input_bfds; ibfd != NULL; ibfd = ibfd->link.next)
e717da7e 9931 {
0c8d6e5c 9932 if (!is_ppc64_elf (ibfd))
7b53ace3
AM		 9933 continue;
9934
e717da7e 9935 s = ppc64_elf_tdata (ibfd)->got;
33e44f2e 9936 if (s != NULL && s != htab->elf.sgot)
e717da7e 9937 {
eea6121a 9938 if (s->size == 0)
8423293d 9939 s->flags |= SEC_EXCLUDE;
e717da7e
AM		 9940 else
9941 {
eea6121a 9942 s->contents = bfd_zalloc (ibfd, s->size);
e717da7e
AM		 9943 if (s->contents == NULL)
9944 return FALSE;
9945 }
9946 }
9947 s = ppc64_elf_tdata (ibfd)->relgot;
9948 if (s != NULL)
9949 {
eea6121a 9950 if (s->size == 0)
8423293d 9951 s->flags |= SEC_EXCLUDE;
e717da7e
AM		 9952 else
9953 {
eea6121a 9954 s->contents = bfd_zalloc (ibfd, s->size);
e717da7e
AM		 9955 if (s->contents == NULL)
9956 return FALSE;
9957 relocs = TRUE;
9958 s->reloc_count = 0;
9959 }
9960 }
9961 }
9962
e86ce104 9963 if (htab->elf.dynamic_sections_created)
5bd4f169 9964 {
e8910a83
AM		 9965 bfd_boolean tls_opt;
9966
5bd4f169
AM		 9967 /* Add some entries to the .dynamic section. We fill in the
9968 values later, in ppc64_elf_finish_dynamic_sections, but we
9969 must add the entries now so that we get the correct size for
9970 the .dynamic section. The DT_DEBUG entry is filled in by the
9971 dynamic linker and used by the debugger. */
dc810e39 9972#define add_dynamic_entry(TAG, VAL) \
5a580b3a 9973 _bfd_elf_add_dynamic_entry (info, TAG, VAL)
dc810e39 9974
36af4a4e 9975 if (info->executable)
5bd4f169 9976 {
dc810e39 9977 if (!add_dynamic_entry (DT_DEBUG, 0))
b34976b6 9978 return FALSE;
5bd4f169
AM		 9979 }
9980
33e44f2e 9981 if (htab->elf.splt != NULL && htab->elf.splt->size != 0)
5bd4f169 9982 {
dc810e39
AM		 9983 if (!add_dynamic_entry (DT_PLTGOT, 0)
9984 || !add_dynamic_entry (DT_PLTRELSZ, 0)
9985 || !add_dynamic_entry (DT_PLTREL, DT_RELA)
5d1634d7
AM		 9986 || !add_dynamic_entry (DT_JMPREL, 0)
9987 || !add_dynamic_entry (DT_PPC64_GLINK, 0))
b34976b6 9988 return FALSE;
5bd4f169
AM		 9989 }
9990
ee67d69a 9991 if (NO_OPD_RELOCS && abiversion (output_bfd) <= 1)
19397422
AM		 9992 {
9993 if (!add_dynamic_entry (DT_PPC64_OPD, 0)
9994 || !add_dynamic_entry (DT_PPC64_OPDSZ, 0))
b34976b6 9995 return FALSE;
19397422
AM		 9996 }
9997
e7d1c40c 9998 tls_opt = (!htab->params->no_tls_get_addr_opt
e8910a83
AM		 9999 && htab->tls_get_addr_fd != NULL
10000 && htab->tls_get_addr_fd->elf.plt.plist != NULL);
10001 if (tls_opt || !htab->opd_abi)
10002 {
10003 if (!add_dynamic_entry (DT_PPC64_OPT, tls_opt ? PPC64_OPT_TLS : 0))
10004 return FALSE;
10005 }
a7f2871e 10006
5bd4f169
AM		 10007 if (relocs)
10008 {
dc810e39
AM		 10009 if (!add_dynamic_entry (DT_RELA, 0)
10010 || !add_dynamic_entry (DT_RELASZ, 0)
10011 || !add_dynamic_entry (DT_RELAENT, sizeof (Elf64_External_Rela)))
b34976b6 10012 return FALSE;
5bd4f169 10013
65f38f15
AM		 10014 /* If any dynamic relocs apply to a read-only section,
10015 then we need a DT_TEXTREL entry. */
248866a8 10016 if ((info->flags & DF_TEXTREL) == 0)
a345bc8d 10017 elf_link_hash_traverse (&htab->elf, maybe_set_textrel, info);
5bd4f169 10018
65f38f15 10019 if ((info->flags & DF_TEXTREL) != 0)
5bd4f169 10020 {
65f38f15 10021 if (!add_dynamic_entry (DT_TEXTREL, 0))
b34976b6 10022 return FALSE;
5bd4f169 10023 }
5bd4f169 10024 }
5bd4f169 10025 }
65f38f15 10026#undef add_dynamic_entry
5bd4f169 10027
b34976b6 10028 return TRUE;
5bd4f169
AM		 10029}
10030
a345bc8d
AM		 10031/* Return TRUE if symbol should be hashed in the `.gnu.hash' section. */
10032
10033static bfd_boolean
10034ppc64_elf_hash_symbol (struct elf_link_hash_entry *h)
10035{
10036 if (h->plt.plist != NULL
10037 && !h->def_regular
10038 && !h->pointer_equality_needed)
10039 return FALSE;
10040
10041 return _bfd_elf_hash_symbol (h);
10042}
10043
721956f4 10044/* Determine the type of stub needed, if any, for a call. */
5bd4f169 10045
4ce794b7
AM		 10046static inline enum ppc_stub_type
10047ppc_type_of_stub (asection *input_sec,
10048 const Elf_Internal_Rela *rel,
10049 struct ppc_link_hash_entry **hash,
e054468f 10050 struct plt_entry **plt_ent,
6911b7dc
AM		 10051 bfd_vma destination,
10052 unsigned long local_off)
5bd4f169 10053{
721956f4
AM		 10054 struct ppc_link_hash_entry *h = *hash;
10055 bfd_vma location;
10056 bfd_vma branch_offset;
10057 bfd_vma max_branch_offset;
4ce794b7 10058 enum elf_ppc64_reloc_type r_type;
5bd4f169 10059
721956f4
AM		 10060 if (h != NULL)
10061 {
e054468f 10062 struct plt_entry *ent;
7fe2b9a6 10063 struct ppc_link_hash_entry *fdh = h;
b31867b6
AM		 10064 if (h->oh != NULL
10065 && h->oh->is_func_descriptor)
7b8f6675
AM		 10066 {
10067 fdh = ppc_follow_link (h->oh);
10068 *hash = fdh;
10069 }
8387904d 10070
e054468f
AM		 10071 for (ent = fdh->elf.plt.plist; ent != NULL; ent = ent->next)
10072 if (ent->addend == rel->r_addend
10073 && ent->plt.offset != (bfd_vma) -1)
10074 {
e054468f
AM		 10075 *plt_ent = ent;
10076 return ppc_stub_plt_call;
10077 }
5bd4f169 10078
7fe2b9a6
AM		 10079 /* Here, we know we don't have a plt entry. If we don't have a
10080 either a defined function descriptor or a defined entry symbol
10081 in a regular object file, then it is pointless trying to make
10082 any other type of stub. */
854b41e7
AM		 10083 if (!is_static_defined (&fdh->elf)
10084 && !is_static_defined (&h->elf))
721956f4 10085 return ppc_stub_none;
5d1634d7 10086 }
e054468f
AM		 10087 else if (elf_local_got_ents (input_sec->owner) != NULL)
10088 {
10089 Elf_Internal_Shdr *symtab_hdr = &elf_symtab_hdr (input_sec->owner);
10090 struct plt_entry **local_plt = (struct plt_entry **)
10091 elf_local_got_ents (input_sec->owner) + symtab_hdr->sh_info;
10092 unsigned long r_symndx = ELF64_R_SYM (rel->r_info);
10093
10094 if (local_plt[r_symndx] != NULL)
10095 {
10096 struct plt_entry *ent;
10097
10098 for (ent = local_plt[r_symndx]; ent != NULL; ent = ent->next)
10099 if (ent->addend == rel->r_addend
10100 && ent->plt.offset != (bfd_vma) -1)
10101 {
10102 *plt_ent = ent;
10103 return ppc_stub_plt_call;
10104 }
10105 }
10106 }
5d1634d7 10107
721956f4
AM		 10108 /* Determine where the call point is. */
10109 location = (input_sec->output_offset
10110 + input_sec->output_section->vma
10111 + rel->r_offset);
5d1634d7 10112
721956f4
AM		 10113 branch_offset = destination - location;
10114 r_type = ELF64_R_TYPE (rel->r_info);
5d1634d7 10115
721956f4
AM		 10116 /* Determine if a long branch stub is needed. */
10117 max_branch_offset = 1 << 25;
4ce794b7 10118 if (r_type != R_PPC64_REL24)
721956f4 10119 max_branch_offset = 1 << 15;
5d1634d7 10120
6911b7dc 10121 if (branch_offset + max_branch_offset >= 2 * max_branch_offset - local_off)
721956f4
AM		 10122 /* We need a stub. Figure out whether a long_branch or plt_branch
10123 is needed later. */
10124 return ppc_stub_long_branch;
5d1634d7 10125
721956f4 10126 return ppc_stub_none;
5d1634d7
AM		 10127}
10128
794e51c0
AM		 10129/* With power7 weakly ordered memory model, it is possible for ld.so
10130 to update a plt entry in one thread and have another thread see a
10131 stale zero toc entry. To avoid this we need some sort of acquire
10132 barrier in the call stub. One solution is to make the load of the
10133 toc word seem to appear to depend on the load of the function entry
10134 word. Another solution is to test for r2 being zero, and branch to
10135 the appropriate glink entry if so.
10136
10137 . fake dep barrier compare
71a39c98
AM		 10138 . ld 12,xxx(2) ld 12,xxx(2)
10139 . mtctr 12 mtctr 12
10140 . xor 11,12,12 ld 2,xxx+8(2)
794e51c0
AM		 10141 . add 2,2,11 cmpldi 2,0
10142 . ld 2,xxx+8(2) bnectr+
10143 . bctr b <glink_entry>
10144
10145 The solution involving the compare turns out to be faster, so
10146 that's what we use unless the branch won't reach. */
10147
10148#define ALWAYS_USE_FAKE_DEP 0
10149#define ALWAYS_EMIT_R2SAVE 0
5d1634d7 10150
5d1634d7
AM		 10151#define PPC_LO(v) ((v) & 0xffff)
10152#define PPC_HI(v) (((v) >> 16) & 0xffff)
10153#define PPC_HA(v) PPC_HI ((v) + 0x8000)
10154
794e51c0
AM		 10155static inline unsigned int
10156plt_stub_size (struct ppc_link_hash_table *htab,
10157 struct ppc_stub_hash_entry *stub_entry,
10158 bfd_vma off)
10159{
b9e5796b
AM		 10160 unsigned size = 12;
10161
10162 if (ALWAYS_EMIT_R2SAVE
10163 || stub_entry->stub_type == ppc_stub_plt_call_r2save)
10164 size += 4;
10165 if (PPC_HA (off) != 0)
794e51c0 10166 size += 4;
b9e5796b
AM		 10167 if (htab->opd_abi)
10168 {
10169 size += 4;
e7d1c40c 10170 if (htab->params->plt_static_chain)
b9e5796b 10171 size += 4;
e7d1c40c 10172 if (htab->params->plt_thread_safe)
b9e5796b 10173 size += 8;
e7d1c40c 10174 if (PPC_HA (off + 8 + 8 * htab->params->plt_static_chain) != PPC_HA (off))
b9e5796b
AM		 10175 size += 4;
10176 }
794e51c0
AM		 10177 if (stub_entry->h != NULL
10178 && (stub_entry->h == htab->tls_get_addr_fd
10179 || stub_entry->h == htab->tls_get_addr)
e7d1c40c 10180 && !htab->params->no_tls_get_addr_opt)
794e51c0
AM		 10181 size += 13 * 4;
10182 return size;
10183}
10184
10185/* If this stub would cross fewer 2**plt_stub_align boundaries if we align,
10186 then return the padding needed to do so. */
10187static inline unsigned int
10188plt_stub_pad (struct ppc_link_hash_table *htab,
10189 struct ppc_stub_hash_entry *stub_entry,
10190 bfd_vma plt_off)
10191{
e7d1c40c 10192 int stub_align = 1 << htab->params->plt_stub_align;
794e51c0
AM		 10193 unsigned stub_size = plt_stub_size (htab, stub_entry, plt_off);
10194 bfd_vma stub_off = stub_entry->stub_sec->size;
10195
10196 if (((stub_off + stub_size - 1) & -stub_align) - (stub_off & -stub_align)
10197 > (stub_size & -stub_align))
10198 return stub_align - (stub_off & (stub_align - 1));
10199 return 0;
10200}
10201
10202/* Build a .plt call stub. */
10203
10204static inline bfd_byte *
10205build_plt_stub (struct ppc_link_hash_table *htab,
10206 struct ppc_stub_hash_entry *stub_entry,
10207 bfd_byte *p, bfd_vma offset, Elf_Internal_Rela *r)
10208{
e7d1c40c 10209 bfd *obfd = htab->params->stub_bfd;
b9e5796b 10210 bfd_boolean plt_load_toc = htab->opd_abi;
e7d1c40c
AM		 10211 bfd_boolean plt_static_chain = htab->params->plt_static_chain;
10212 bfd_boolean plt_thread_safe = htab->params->plt_thread_safe;
794e51c0
AM		 10213 bfd_boolean use_fake_dep = plt_thread_safe;
10214 bfd_vma cmp_branch_off = 0;
10215
10216 if (!ALWAYS_USE_FAKE_DEP
b9e5796b 10217 && plt_load_toc
794e51c0
AM		 10218 && plt_thread_safe
10219 && !(stub_entry->h != NULL
10220 && (stub_entry->h == htab->tls_get_addr_fd
10221 || stub_entry->h == htab->tls_get_addr)
e7d1c40c 10222 && !htab->params->no_tls_get_addr_opt))
794e51c0
AM		 10223 {
10224 bfd_vma pltoff = stub_entry->plt_ent->plt.offset & ~1;
b9e5796b
AM		 10225 bfd_vma pltindex = ((pltoff - PLT_INITIAL_ENTRY_SIZE (htab))
10226 / PLT_ENTRY_SIZE (htab));
794e51c0
AM		 10227 bfd_vma glinkoff = GLINK_CALL_STUB_SIZE + pltindex * 8;
10228 bfd_vma to, from;
10229
68d62958
AM		 10230 if (pltindex > 32768)
10231 glinkoff += (pltindex - 32768) * 4;
794e51c0
AM		 10232 to = (glinkoff
10233 + htab->glink->output_offset
10234 + htab->glink->output_section->vma);
10235 from = (p - stub_entry->stub_sec->contents
10236 + 4 * (ALWAYS_EMIT_R2SAVE
10237 || stub_entry->stub_type == ppc_stub_plt_call_r2save)
10238 + 4 * (PPC_HA (offset) != 0)
10239 + 4 * (PPC_HA (offset + 8 + 8 * plt_static_chain)
10240 != PPC_HA (offset))
10241 + 4 * (plt_static_chain != 0)
10242 + 20
10243 + stub_entry->stub_sec->output_offset
10244 + stub_entry->stub_sec->output_section->vma);
10245 cmp_branch_off = to - from;
10246 use_fake_dep = cmp_branch_off + (1 << 25) >= (1 << 26);
10247 }
10248
ac2df442
AM		 10249 if (PPC_HA (offset) != 0)
10250 {
176a0d42
AM		 10251 if (r != NULL)
10252 {
794e51c0
AM		 10253 if (ALWAYS_EMIT_R2SAVE
10254 || stub_entry->stub_type == ppc_stub_plt_call_r2save)
10255 r[0].r_offset += 4;
176a0d42 10256 r[0].r_info = ELF64_R_INFO (0, R_PPC64_TOC16_HA);
3b421ab3 10257 r[1].r_offset = r[0].r_offset + 4;
176a0d42
AM		 10258 r[1].r_info = ELF64_R_INFO (0, R_PPC64_TOC16_LO_DS);
10259 r[1].r_addend = r[0].r_addend;
b9e5796b 10260 if (plt_load_toc)
176a0d42 10261 {
b9e5796b 10262 if (PPC_HA (offset + 8 + 8 * plt_static_chain) != PPC_HA (offset))
c7131b65 10263 {
b9e5796b
AM		 10264 r[2].r_offset = r[1].r_offset + 4;
10265 r[2].r_info = ELF64_R_INFO (0, R_PPC64_TOC16_LO);
10266 r[2].r_addend = r[0].r_addend;
10267 }
10268 else
10269 {
10270 r[2].r_offset = r[1].r_offset + 8 + 8 * use_fake_dep;
10271 r[2].r_info = ELF64_R_INFO (0, R_PPC64_TOC16_LO_DS);
10272 r[2].r_addend = r[0].r_addend + 8;
10273 if (plt_static_chain)
10274 {
10275 r[3].r_offset = r[2].r_offset + 4;
10276 r[3].r_info = ELF64_R_INFO (0, R_PPC64_TOC16_LO_DS);
10277 r[3].r_addend = r[0].r_addend + 16;
10278 }
c7131b65 10279 }
176a0d42
AM		 10280 }
10281 }
794e51c0
AM		 10282 if (ALWAYS_EMIT_R2SAVE
10283 || stub_entry->stub_type == ppc_stub_plt_call_r2save)
a078d95a 10284 bfd_put_32 (obfd, STD_R2_0R1 + STK_TOC (htab), p), p += 4;
397998fc
AM		 10285 if (plt_load_toc)
10286 {
10287 bfd_put_32 (obfd, ADDIS_R11_R2 | PPC_HA (offset), p), p += 4;
10288 bfd_put_32 (obfd, LD_R12_0R11 | PPC_LO (offset), p), p += 4;
10289 }
10290 else
10291 {
10292 bfd_put_32 (obfd, ADDIS_R12_R2 | PPC_HA (offset), p), p += 4;
10293 bfd_put_32 (obfd, LD_R12_0R12 | PPC_LO (offset), p), p += 4;
10294 }
b9e5796b
AM		 10295 if (plt_load_toc
10296 && PPC_HA (offset + 8 + 8 * plt_static_chain) != PPC_HA (offset))
ac2df442 10297 {
71a39c98 10298 bfd_put_32 (obfd, ADDI_R11_R11 | PPC_LO (offset), p), p += 4;
ac2df442
AM		 10299 offset = 0;
10300 }
71a39c98 10301 bfd_put_32 (obfd, MTCTR_R12, p), p += 4;
b9e5796b 10302 if (plt_load_toc)
794e51c0 10303 {
b9e5796b
AM		 10304 if (use_fake_dep)
10305 {
10306 bfd_put_32 (obfd, XOR_R2_R12_R12, p), p += 4;
10307 bfd_put_32 (obfd, ADD_R11_R11_R2, p), p += 4;
10308 }
10309 bfd_put_32 (obfd, LD_R2_0R11 | PPC_LO (offset + 8), p), p += 4;
10310 if (plt_static_chain)
10311 bfd_put_32 (obfd, LD_R11_0R11 | PPC_LO (offset + 16), p), p += 4;
794e51c0 10312 }
ac2df442
AM		 10313 }
10314 else
10315 {
176a0d42
AM		 10316 if (r != NULL)
10317 {
794e51c0
AM		 10318 if (ALWAYS_EMIT_R2SAVE
10319 || stub_entry->stub_type == ppc_stub_plt_call_r2save)
10320 r[0].r_offset += 4;
176a0d42 10321 r[0].r_info = ELF64_R_INFO (0, R_PPC64_TOC16_DS);
b9e5796b 10322 if (plt_load_toc)
176a0d42 10323 {
b9e5796b 10324 if (PPC_HA (offset + 8 + 8 * plt_static_chain) != PPC_HA (offset))
c7131b65 10325 {
b9e5796b
AM		 10326 r[1].r_offset = r[0].r_offset + 4;
10327 r[1].r_info = ELF64_R_INFO (0, R_PPC64_TOC16);
10328 r[1].r_addend = r[0].r_addend;
10329 }
10330 else
10331 {
10332 r[1].r_offset = r[0].r_offset + 8 + 8 * use_fake_dep;
10333 r[1].r_info = ELF64_R_INFO (0, R_PPC64_TOC16_DS);
10334 r[1].r_addend = r[0].r_addend + 8 + 8 * plt_static_chain;
10335 if (plt_static_chain)
10336 {
10337 r[2].r_offset = r[1].r_offset + 4;
10338 r[2].r_info = ELF64_R_INFO (0, R_PPC64_TOC16_DS);
10339 r[2].r_addend = r[0].r_addend + 8;
10340 }
c7131b65 10341 }
176a0d42
AM		 10342 }
10343 }
794e51c0
AM		 10344 if (ALWAYS_EMIT_R2SAVE
10345 || stub_entry->stub_type == ppc_stub_plt_call_r2save)
a078d95a 10346 bfd_put_32 (obfd, STD_R2_0R1 + STK_TOC (htab), p), p += 4;
71a39c98 10347 bfd_put_32 (obfd, LD_R12_0R2 | PPC_LO (offset), p), p += 4;
b9e5796b
AM		 10348 if (plt_load_toc
10349 && PPC_HA (offset + 8 + 8 * plt_static_chain) != PPC_HA (offset))
ac2df442
AM		 10350 {
10351 bfd_put_32 (obfd, ADDI_R2_R2 | PPC_LO (offset), p), p += 4;
10352 offset = 0;
10353 }
71a39c98 10354 bfd_put_32 (obfd, MTCTR_R12, p), p += 4;
b9e5796b 10355 if (plt_load_toc)
794e51c0 10356 {
b9e5796b
AM		 10357 if (use_fake_dep)
10358 {
10359 bfd_put_32 (obfd, XOR_R11_R12_R12, p), p += 4;
10360 bfd_put_32 (obfd, ADD_R2_R2_R11, p), p += 4;
10361 }
10362 if (plt_static_chain)
10363 bfd_put_32 (obfd, LD_R11_0R2 | PPC_LO (offset + 16), p), p += 4;
10364 bfd_put_32 (obfd, LD_R2_0R2 | PPC_LO (offset + 8), p), p += 4;
794e51c0 10365 }
ac2df442 10366 }
b9e5796b 10367 if (plt_load_toc && plt_thread_safe && !use_fake_dep)
794e51c0
AM		 10368 {
10369 bfd_put_32 (obfd, CMPLDI_R2_0, p), p += 4;
10370 bfd_put_32 (obfd, BNECTR_P4, p), p += 4;
22aa0c7e 10371 bfd_put_32 (obfd, B_DOT | (cmp_branch_off & 0x3fffffc), p), p += 4;
794e51c0
AM		 10372 }
10373 else
10374 bfd_put_32 (obfd, BCTR, p), p += 4;
5d1634d7
AM		 10375 return p;
10376}
10377
a7f2871e
AM		 10378/* Build a special .plt call stub for __tls_get_addr. */
10379
10380#define LD_R11_0R3 0xe9630000
10381#define LD_R12_0R3 0xe9830000
10382#define MR_R0_R3 0x7c601b78
10383#define CMPDI_R11_0 0x2c2b0000
10384#define ADD_R3_R12_R13 0x7c6c6a14
10385#define BEQLR 0x4d820020
10386#define MR_R3_R0 0x7c030378
a7f2871e
AM		 10387#define STD_R11_0R1 0xf9610000
10388#define BCTRL 0x4e800421
10389#define LD_R11_0R1 0xe9610000
a7f2871e
AM		 10390#define MTLR_R11 0x7d6803a6
10391
10392static inline bfd_byte *
794e51c0
AM		 10393build_tls_get_addr_stub (struct ppc_link_hash_table *htab,
10394 struct ppc_stub_hash_entry *stub_entry,
10395 bfd_byte *p, bfd_vma offset, Elf_Internal_Rela *r)
a7f2871e 10396{
e7d1c40c 10397 bfd *obfd = htab->params->stub_bfd;
794e51c0 10398
a7f2871e
AM		 10399 bfd_put_32 (obfd, LD_R11_0R3 + 0, p), p += 4;
10400 bfd_put_32 (obfd, LD_R12_0R3 + 8, p), p += 4;
10401 bfd_put_32 (obfd, MR_R0_R3, p), p += 4;
10402 bfd_put_32 (obfd, CMPDI_R11_0, p), p += 4;
10403 bfd_put_32 (obfd, ADD_R3_R12_R13, p), p += 4;
10404 bfd_put_32 (obfd, BEQLR, p), p += 4;
10405 bfd_put_32 (obfd, MR_R3_R0, p), p += 4;
10406 bfd_put_32 (obfd, MFLR_R11, p), p += 4;
a078d95a 10407 bfd_put_32 (obfd, STD_R11_0R1 + STK_LINKER (htab), p), p += 4;
a7f2871e
AM		 10408
10409 if (r != NULL)
10410 r[0].r_offset += 9 * 4;
794e51c0 10411 p = build_plt_stub (htab, stub_entry, p, offset, r);
a7f2871e
AM		 10412 bfd_put_32 (obfd, BCTRL, p - 4);
10413
a078d95a
AM		 10414 bfd_put_32 (obfd, LD_R11_0R1 + STK_LINKER (htab), p), p += 4;
10415 bfd_put_32 (obfd, LD_R2_0R1 + STK_TOC (htab), p), p += 4;
a7f2871e
AM		 10416 bfd_put_32 (obfd, MTLR_R11, p), p += 4;
10417 bfd_put_32 (obfd, BLR, p), p += 4;
10418
10419 return p;
10420}
10421
176a0d42
AM		 10422static Elf_Internal_Rela *
10423get_relocs (asection *sec, int count)
10424{
10425 Elf_Internal_Rela *relocs;
10426 struct bfd_elf_section_data *elfsec_data;
10427
10428 elfsec_data = elf_section_data (sec);
10429 relocs = elfsec_data->relocs;
10430 if (relocs == NULL)
10431 {
10432 bfd_size_type relsize;
10433 relsize = sec->reloc_count * sizeof (*relocs);
10434 relocs = bfd_alloc (sec->owner, relsize);
10435 if (relocs == NULL)
10436 return NULL;
10437 elfsec_data->relocs = relocs;
d4730f92
BS		 10438 elfsec_data->rela.hdr = bfd_zalloc (sec->owner,
10439 sizeof (Elf_Internal_Shdr));
10440 if (elfsec_data->rela.hdr == NULL)
10441 return NULL;
10442 elfsec_data->rela.hdr->sh_size = (sec->reloc_count
10443 * sizeof (Elf64_External_Rela));
10444 elfsec_data->rela.hdr->sh_entsize = sizeof (Elf64_External_Rela);
176a0d42
AM		 10445 sec->reloc_count = 0;
10446 }
10447 relocs += sec->reloc_count;
10448 sec->reloc_count += count;
10449 return relocs;
10450}
10451
aa374f67 10452static bfd_vma
25f53a85 10453get_r2off (struct bfd_link_info *info,
aa374f67
AM		 10454 struct ppc_stub_hash_entry *stub_entry)
10455{
25f53a85 10456 struct ppc_link_hash_table *htab = ppc_hash_table (info);
aa374f67
AM		 10457 bfd_vma r2off = htab->stub_group[stub_entry->target_section->id].toc_off;
10458
10459 if (r2off == 0)
10460 {
10461 /* Support linking -R objects. Get the toc pointer from the
10462 opd entry. */
10463 char buf[8];
b9e5796b
AM		 10464 if (!htab->opd_abi)
10465 return r2off;
aa374f67
AM		 10466 asection *opd = stub_entry->h->elf.root.u.def.section;
10467 bfd_vma opd_off = stub_entry->h->elf.root.u.def.value;
10468
10469 if (strcmp (opd->name, ".opd") != 0
10470 || opd->reloc_count != 0)
10471 {
bc30df16 10472 info->callbacks->einfo (_("%P: cannot find opd entry toc for `%T'\n"),
25f53a85 10473 stub_entry->h->elf.root.root.string);
aa374f67
AM		 10474 bfd_set_error (bfd_error_bad_value);
10475 return 0;
10476 }
10477 if (!bfd_get_section_contents (opd->owner, opd, buf, opd_off + 8, 8))
10478 return 0;
10479 r2off = bfd_get_64 (opd->owner, buf);
25f53a85 10480 r2off -= elf_gp (info->output_bfd);
aa374f67
AM		 10481 }
10482 r2off -= htab->stub_group[stub_entry->id_sec->id].toc_off;
10483 return r2off;
10484}
10485
b34976b6 10486static bfd_boolean
4ce794b7 10487ppc_build_one_stub (struct bfd_hash_entry *gen_entry, void *in_arg)
5d1634d7 10488{
721956f4
AM		 10489 struct ppc_stub_hash_entry *stub_entry;
10490 struct ppc_branch_hash_entry *br_entry;
5d1634d7
AM		 10491 struct bfd_link_info *info;
10492 struct ppc_link_hash_table *htab;
721956f4
AM		 10493 bfd_byte *loc;
10494 bfd_byte *p;
ee75fd95 10495 bfd_vma dest, off;
721956f4 10496 int size;
176a0d42 10497 Elf_Internal_Rela *r;
e054468f 10498 asection *plt;
5d1634d7 10499
721956f4
AM		 10500 /* Massage our args to the form they really have. */
10501 stub_entry = (struct ppc_stub_hash_entry *) gen_entry;
4ce794b7 10502 info = in_arg;
5d1634d7 10503
5d1634d7 10504 htab = ppc_hash_table (info);
4dfe6ac6
NC		 10505 if (htab == NULL)
10506 return FALSE;
5d1634d7 10507
721956f4 10508 /* Make a note of the offset within the stubs for this entry. */
eea6121a 10509 stub_entry->stub_offset = stub_entry->stub_sec->size;
97b639ba 10510 loc = stub_entry->stub_sec->contents + stub_entry->stub_offset;
721956f4 10511
4ce794b7 10512 htab->stub_count[stub_entry->stub_type - 1] += 1;
721956f4 10513 switch (stub_entry->stub_type)
5d1634d7 10514 {
721956f4 10515 case ppc_stub_long_branch:
ad8e1ba5 10516 case ppc_stub_long_branch_r2off:
721956f4 10517 /* Branches are relative. This is where we are going to. */
6911b7dc
AM		 10518 dest = (stub_entry->target_value
10519 + stub_entry->target_section->output_offset
10520 + stub_entry->target_section->output_section->vma);
10521 dest += PPC64_LOCAL_ENTRY_OFFSET (stub_entry->other);
10522 off = dest;
5d1634d7 10523
721956f4
AM		 10524 /* And this is where we are coming from. */
10525 off -= (stub_entry->stub_offset
97b639ba
AM		 10526 + stub_entry->stub_sec->output_offset
10527 + stub_entry->stub_sec->output_section->vma);
e86ce104 10528
ac2df442
AM		 10529 size = 4;
10530 if (stub_entry->stub_type == ppc_stub_long_branch_r2off)
ad8e1ba5 10531 {
25f53a85 10532 bfd_vma r2off = get_r2off (info, stub_entry);
ad8e1ba5 10533
aa374f67
AM		 10534 if (r2off == 0)
10535 {
10536 htab->stub_error = TRUE;
10537 return FALSE;
10538 }
e7d1c40c 10539 bfd_put_32 (htab->params->stub_bfd, STD_R2_0R1 + STK_TOC (htab), loc);
ad8e1ba5 10540 loc += 4;
ac2df442
AM		 10541 size = 12;
10542 if (PPC_HA (r2off) != 0)
10543 {
10544 size = 16;
e7d1c40c
AM		 10545 bfd_put_32 (htab->params->stub_bfd,
10546 ADDIS_R2_R2 | PPC_HA (r2off), loc);
ac2df442
AM		 10547 loc += 4;
10548 }
e7d1c40c 10549 bfd_put_32 (htab->params->stub_bfd, ADDI_R2_R2 | PPC_LO (r2off), loc);
ad8e1ba5 10550 loc += 4;
ac2df442 10551 off -= size - 4;
ad8e1ba5 10552 }
e7d1c40c 10553 bfd_put_32 (htab->params->stub_bfd, B_DOT | (off & 0x3fffffc), loc);
ad8e1ba5 10554
5c3dead3
AM		 10555 if (off + (1 << 25) >= (bfd_vma) (1 << 26))
10556 {
bc30df16
AM		 10557 info->callbacks->einfo
10558 (_("%P: long branch stub `%s' offset overflow\n"),
10559 stub_entry->root.string);
5c3dead3
AM		 10560 htab->stub_error = TRUE;
10561 return FALSE;
10562 }
ee75fd95
AM		 10563
10564 if (info->emitrelocations)
10565 {
176a0d42
AM		 10566 r = get_relocs (stub_entry->stub_sec, 1);
10567 if (r == NULL)
10568 return FALSE;
ee75fd95
AM		 10569 r->r_offset = loc - stub_entry->stub_sec->contents;
10570 r->r_info = ELF64_R_INFO (0, R_PPC64_REL24);
10571 r->r_addend = dest;
10572 if (stub_entry->h != NULL)
10573 {
10574 struct elf_link_hash_entry **hashes;
10575 unsigned long symndx;
10576 struct ppc_link_hash_entry *h;
10577
e7d1c40c 10578 hashes = elf_sym_hashes (htab->params->stub_bfd);
ee75fd95
AM		 10579 if (hashes == NULL)
10580 {
10581 bfd_size_type hsize;
10582
10583 hsize = (htab->stub_globals + 1) * sizeof (*hashes);
e7d1c40c 10584 hashes = bfd_zalloc (htab->params->stub_bfd, hsize);
ee75fd95
AM		 10585 if (hashes == NULL)
10586 return FALSE;
e7d1c40c 10587 elf_sym_hashes (htab->params->stub_bfd) = hashes;
ee75fd95
AM		 10588 htab->stub_globals = 1;
10589 }
10590 symndx = htab->stub_globals++;
10591 h = stub_entry->h;
10592 hashes[symndx] = &h->elf;
10593 r->r_info = ELF64_R_INFO (symndx, R_PPC64_REL24);
10594 if (h->oh != NULL && h->oh->is_func)
b31867b6 10595 h = ppc_follow_link (h->oh);
ee75fd95
AM		 10596 if (h->elf.root.u.def.section != stub_entry->target_section)
10597 /* H is an opd symbol. The addend must be zero. */
10598 r->r_addend = 0;
10599 else
10600 {
10601 off = (h->elf.root.u.def.value
10602 + h->elf.root.u.def.section->output_offset
10603 + h->elf.root.u.def.section->output_section->vma);
10604 r->r_addend -= off;
10605 }
10606 }
10607 }
721956f4 10608 break;
e86ce104 10609
721956f4 10610 case ppc_stub_plt_branch:
ad8e1ba5 10611 case ppc_stub_plt_branch_r2off:
721956f4
AM		 10612 br_entry = ppc_branch_hash_lookup (&htab->branch_hash_table,
10613 stub_entry->root.string + 9,
b34976b6 10614 FALSE, FALSE);
721956f4
AM		 10615 if (br_entry == NULL)
10616 {
8de848d8 10617 info->callbacks->einfo (_("%P: can't find branch stub `%s'\n"),
25f53a85 10618 stub_entry->root.string);
b34976b6
AM		 10619 htab->stub_error = TRUE;
10620 return FALSE;
721956f4
AM		 10621 }
10622
176a0d42
AM		 10623 dest = (stub_entry->target_value
10624 + stub_entry->target_section->output_offset
10625 + stub_entry->target_section->output_section->vma);
6911b7dc
AM		 10626 if (stub_entry->stub_type != ppc_stub_plt_branch_r2off)
10627 dest += PPC64_LOCAL_ENTRY_OFFSET (stub_entry->other);
721956f4 10628
176a0d42 10629 bfd_put_64 (htab->brlt->owner, dest,
4ce794b7 10630 htab->brlt->contents + br_entry->offset);
721956f4 10631
f94498ff 10632 if (br_entry->iter == htab->stub_iteration)
721956f4 10633 {
f94498ff 10634 br_entry->iter = 0;
84f5d08e 10635
f94498ff 10636 if (htab->relbrlt != NULL)
84f5d08e 10637 {
f94498ff
AM		 10638 /* Create a reloc for the branch lookup table entry. */
10639 Elf_Internal_Rela rela;
10640 bfd_byte *rl;
10641
10642 rela.r_offset = (br_entry->offset
10643 + htab->brlt->output_offset
10644 + htab->brlt->output_section->vma);
10645 rela.r_info = ELF64_R_INFO (0, R_PPC64_RELATIVE);
176a0d42 10646 rela.r_addend = dest;
f94498ff
AM		 10647
10648 rl = htab->relbrlt->contents;
10649 rl += (htab->relbrlt->reloc_count++
10650 * sizeof (Elf64_External_Rela));
10651 bfd_elf64_swap_reloca_out (htab->relbrlt->owner, &rela, rl);
10652 }
10653 else if (info->emitrelocations)
10654 {
176a0d42
AM		 10655 r = get_relocs (htab->brlt, 1);
10656 if (r == NULL)
10657 return FALSE;
10658 /* brlt, being SEC_LINKER_CREATED does not go through the
10659 normal reloc processing. Symbols and offsets are not
10660 translated from input file to output file form, so
10661 set up the offset per the output file. */
f94498ff
AM		 10662 r->r_offset = (br_entry->offset
10663 + htab->brlt->output_offset
10664 + htab->brlt->output_section->vma);
10665 r->r_info = ELF64_R_INFO (0, R_PPC64_RELATIVE);
176a0d42 10666 r->r_addend = dest;
84f5d08e 10667 }
84f5d08e 10668 }
721956f4 10669
176a0d42
AM		 10670 dest = (br_entry->offset
10671 + htab->brlt->output_offset
10672 + htab->brlt->output_section->vma);
10673
10674 off = (dest
4ce794b7 10675 - elf_gp (htab->brlt->output_section->owner)
ad8e1ba5 10676 - htab->stub_group[stub_entry->id_sec->id].toc_off);
721956f4 10677
ad8e1ba5 10678 if (off + 0x80008000 > 0xffffffff || (off & 7) != 0)
5d1634d7 10679 {
25f53a85 10680 info->callbacks->einfo
bc30df16 10681 (_("%P: linkage table error against `%T'\n"),
721956f4 10682 stub_entry->root.string);
5d1634d7 10683 bfd_set_error (bfd_error_bad_value);
b34976b6
AM		 10684 htab->stub_error = TRUE;
10685 return FALSE;
5d1634d7 10686 }
41bd81ab 10687
176a0d42
AM		 10688 if (info->emitrelocations)
10689 {
10690 r = get_relocs (stub_entry->stub_sec, 1 + (PPC_HA (off) != 0));
10691 if (r == NULL)
10692 return FALSE;
10693 r[0].r_offset = loc - stub_entry->stub_sec->contents;
7cfbafbc
AM		 10694 if (bfd_big_endian (info->output_bfd))
10695 r[0].r_offset += 2;
00f412ee 10696 if (stub_entry->stub_type == ppc_stub_plt_branch_r2off)
176a0d42
AM		 10697 r[0].r_offset += 4;
10698 r[0].r_info = ELF64_R_INFO (0, R_PPC64_TOC16_DS);
10699 r[0].r_addend = dest;
10700 if (PPC_HA (off) != 0)
10701 {
10702 r[0].r_info = ELF64_R_INFO (0, R_PPC64_TOC16_HA);
10703 r[1].r_offset = r[0].r_offset + 4;
10704 r[1].r_info = ELF64_R_INFO (0, R_PPC64_TOC16_LO_DS);
10705 r[1].r_addend = r[0].r_addend;
10706 }
10707 }
10708
00f412ee 10709 if (stub_entry->stub_type != ppc_stub_plt_branch_r2off)
ad8e1ba5 10710 {
176a0d42 10711 if (PPC_HA (off) != 0)
ac2df442
AM		 10712 {
10713 size = 16;
e7d1c40c 10714 bfd_put_32 (htab->params->stub_bfd,
397998fc 10715 ADDIS_R12_R2 | PPC_HA (off), loc);
ac2df442 10716 loc += 4;
e7d1c40c 10717 bfd_put_32 (htab->params->stub_bfd,
397998fc 10718 LD_R12_0R12 | PPC_LO (off), loc);
ac2df442
AM		 10719 }
10720 else
10721 {
10722 size = 12;
e7d1c40c
AM		 10723 bfd_put_32 (htab->params->stub_bfd,
10724 LD_R12_0R2 | PPC_LO (off), loc);
ac2df442 10725 }
ad8e1ba5
AM		 10726 }
10727 else
10728 {
25f53a85 10729 bfd_vma r2off = get_r2off (info, stub_entry);
aa374f67 10730
00f412ee 10731 if (r2off == 0 && htab->opd_abi)
aa374f67
AM		 10732 {
10733 htab->stub_error = TRUE;
10734 return FALSE;
10735 }
ad8e1ba5 10736
e7d1c40c 10737 bfd_put_32 (htab->params->stub_bfd, STD_R2_0R1 + STK_TOC (htab), loc);
ad8e1ba5 10738 loc += 4;
00f412ee 10739 size = 16;
176a0d42 10740 if (PPC_HA (off) != 0)
ac2df442
AM		 10741 {
10742 size += 4;
e7d1c40c 10743 bfd_put_32 (htab->params->stub_bfd,
397998fc 10744 ADDIS_R12_R2 | PPC_HA (off), loc);
ac2df442 10745 loc += 4;
e7d1c40c 10746 bfd_put_32 (htab->params->stub_bfd,
397998fc 10747 LD_R12_0R12 | PPC_LO (off), loc);
ac2df442
AM		 10748 }
10749 else
e7d1c40c 10750 bfd_put_32 (htab->params->stub_bfd, LD_R12_0R2 | PPC_LO (off), loc);
ac2df442
AM		 10751
10752 if (PPC_HA (r2off) != 0)
10753 {
10754 size += 4;
00f412ee 10755 loc += 4;
e7d1c40c
AM		 10756 bfd_put_32 (htab->params->stub_bfd,
10757 ADDIS_R2_R2 | PPC_HA (r2off), loc);
00f412ee
AM		 10758 }
10759 if (PPC_LO (r2off) != 0)
10760 {
10761 size += 4;
ac2df442 10762 loc += 4;
e7d1c40c
AM		 10763 bfd_put_32 (htab->params->stub_bfd,
10764 ADDI_R2_R2 | PPC_LO (r2off), loc);
ac2df442 10765 }
ad8e1ba5
AM		 10766 }
10767 loc += 4;
e7d1c40c 10768 bfd_put_32 (htab->params->stub_bfd, MTCTR_R12, loc);
ad8e1ba5 10769 loc += 4;
e7d1c40c 10770 bfd_put_32 (htab->params->stub_bfd, BCTR, loc);
721956f4 10771 break;
5d1634d7 10772
721956f4 10773 case ppc_stub_plt_call:
794e51c0 10774 case ppc_stub_plt_call_r2save:
e054468f 10775 if (stub_entry->h != NULL
b31867b6
AM		 10776 && stub_entry->h->is_func_descriptor
10777 && stub_entry->h->oh != NULL)
c862ae31 10778 {
b31867b6
AM		 10779 struct ppc_link_hash_entry *fh = ppc_follow_link (stub_entry->h->oh);
10780
10781 /* If the old-ABI "dot-symbol" is undefined make it weak so
10782 we don't get a link error from RELOC_FOR_GLOBAL_SYMBOL.
10783 FIXME: We used to define the symbol on one of the call
10784 stubs instead, which is why we test symbol section id
10785 against htab->top_id in various places. Likely all
10786 these checks could now disappear. */
10787 if (fh->elf.root.type == bfd_link_hash_undefined)
10788 fh->elf.root.type = bfd_link_hash_undefweak;
9507a174
AM		 10789 /* Stop undo_symbol_twiddle changing it back to undefined. */
10790 fh->was_undefined = 0;
c862ae31
AM		 10791 }
10792
721956f4 10793 /* Now build the stub. */
e054468f 10794 dest = stub_entry->plt_ent->plt.offset & ~1;
176a0d42 10795 if (dest >= (bfd_vma) -2)
721956f4
AM		 10796 abort ();
10797
33e44f2e 10798 plt = htab->elf.splt;
25f23106
AM		 10799 if (!htab->elf.dynamic_sections_created
10800 || stub_entry->h == NULL
10801 || stub_entry->h->elf.dynindx == -1)
33e44f2e 10802 plt = htab->elf.iplt;
e054468f
AM		 10803
10804 dest += plt->output_offset + plt->output_section->vma;
10805
10806 if (stub_entry->h == NULL
10807 && (stub_entry->plt_ent->plt.offset & 1) == 0)
10808 {
10809 Elf_Internal_Rela rela;
10810 bfd_byte *rl;
10811
10812 rela.r_offset = dest;
ee67d69a
AM		 10813 if (htab->opd_abi)
10814 rela.r_info = ELF64_R_INFO (0, R_PPC64_JMP_IREL);
10815 else
10816 rela.r_info = ELF64_R_INFO (0, R_PPC64_IRELATIVE);
e054468f
AM		 10817 rela.r_addend = (stub_entry->target_value
10818 + stub_entry->target_section->output_offset
10819 + stub_entry->target_section->output_section->vma);
10820
33e44f2e
AM		 10821 rl = (htab->elf.irelplt->contents
10822 + (htab->elf.irelplt->reloc_count++
25f23106
AM		 10823 * sizeof (Elf64_External_Rela)));
10824 bfd_elf64_swap_reloca_out (info->output_bfd, &rela, rl);
e054468f
AM		 10825 stub_entry->plt_ent->plt.offset |= 1;
10826 }
176a0d42
AM		 10827
10828 off = (dest
e054468f 10829 - elf_gp (plt->output_section->owner)
176a0d42 10830 - htab->stub_group[stub_entry->id_sec->id].toc_off);
721956f4 10831
ad8e1ba5 10832 if (off + 0x80008000 > 0xffffffff || (off & 7) != 0)
721956f4 10833 {
25f53a85 10834 info->callbacks->einfo
bc30df16 10835 (_("%P: linkage table error against `%T'\n"),
e054468f
AM		 10836 stub_entry->h != NULL
10837 ? stub_entry->h->elf.root.root.string
10838 : "<local sym>");
721956f4 10839 bfd_set_error (bfd_error_bad_value);
b34976b6
AM		 10840 htab->stub_error = TRUE;
10841 return FALSE;
721956f4
AM		 10842 }
10843
e7d1c40c 10844 if (htab->params->plt_stub_align != 0)
794e51c0
AM		 10845 {
10846 unsigned pad = plt_stub_pad (htab, stub_entry, off);
10847
10848 stub_entry->stub_sec->size += pad;
10849 stub_entry->stub_offset = stub_entry->stub_sec->size;
10850 loc += pad;
10851 }
10852
176a0d42
AM		 10853 r = NULL;
10854 if (info->emitrelocations)
10855 {
10856 r = get_relocs (stub_entry->stub_sec,
3ba720c7
AM		 10857 ((PPC_HA (off) != 0)
10858 + (htab->opd_abi
e7d1c40c 10859 ? 2 + (htab->params->plt_static_chain
3ba720c7
AM		 10860 && PPC_HA (off + 16) == PPC_HA (off))
10861 : 1)));
176a0d42
AM		 10862 if (r == NULL)
10863 return FALSE;
10864 r[0].r_offset = loc - stub_entry->stub_sec->contents;
7cfbafbc
AM		 10865 if (bfd_big_endian (info->output_bfd))
10866 r[0].r_offset += 2;
176a0d42
AM		 10867 r[0].r_addend = dest;
10868 }
a7f2871e
AM		 10869 if (stub_entry->h != NULL
10870 && (stub_entry->h == htab->tls_get_addr_fd
10871 || stub_entry->h == htab->tls_get_addr)
e7d1c40c 10872 && !htab->params->no_tls_get_addr_opt)
794e51c0 10873 p = build_tls_get_addr_stub (htab, stub_entry, loc, off, r);
a7f2871e 10874 else
794e51c0 10875 p = build_plt_stub (htab, stub_entry, loc, off, r);
721956f4
AM		 10876 size = p - loc;
10877 break;
10878
10879 default:
10880 BFD_FAIL ();
b34976b6 10881 return FALSE;
721956f4
AM		 10882 }
10883
eea6121a 10884 stub_entry->stub_sec->size += size;
97b639ba 10885
e7d1c40c 10886 if (htab->params->emit_stub_syms)
97b639ba
AM		 10887 {
10888 struct elf_link_hash_entry *h;
ee75fd95
AM		 10889 size_t len1, len2;
10890 char *name;
10891 const char *const stub_str[] = { "long_branch",
10892 "long_branch_r2off",
10893 "plt_branch",
10894 "plt_branch_r2off",
794e51c0 10895 "plt_call",
ee75fd95
AM		 10896 "plt_call" };
10897
10898 len1 = strlen (stub_str[stub_entry->stub_type - 1]);
10899 len2 = strlen (stub_entry->root.string);
10900 name = bfd_malloc (len1 + len2 + 2);
10901 if (name == NULL)
10902 return FALSE;
10903 memcpy (name, stub_entry->root.string, 9);
10904 memcpy (name + 9, stub_str[stub_entry->stub_type - 1], len1);
10905 memcpy (name + len1 + 9, stub_entry->root.string + 8, len2 - 8 + 1);
10906 h = elf_link_hash_lookup (&htab->elf, name, TRUE, FALSE, FALSE);
97b639ba
AM		 10907 if (h == NULL)
10908 return FALSE;
10909 if (h->root.type == bfd_link_hash_new)
10910 {
10911 h->root.type = bfd_link_hash_defined;
10912 h->root.u.def.section = stub_entry->stub_sec;
10913 h->root.u.def.value = stub_entry->stub_offset;
f5385ebf
AM		 10914 h->ref_regular = 1;
10915 h->def_regular = 1;
10916 h->ref_regular_nonweak = 1;
10917 h->forced_local = 1;
10918 h->non_elf = 0;
97b639ba
AM		 10919 }
10920 }
10921
b34976b6 10922 return TRUE;
721956f4
AM		 10923}
10924
10925/* As above, but don't actually build the stub. Just bump offset so
10926 we know stub section sizes, and select plt_branch stubs where
10927 long_branch stubs won't do. */
10928
b34976b6 10929static bfd_boolean
4ce794b7 10930ppc_size_one_stub (struct bfd_hash_entry *gen_entry, void *in_arg)
721956f4
AM		 10931{
10932 struct ppc_stub_hash_entry *stub_entry;
63bc6f6c 10933 struct bfd_link_info *info;
721956f4
AM		 10934 struct ppc_link_hash_table *htab;
10935 bfd_vma off;
10936 int size;
10937
10938 /* Massage our args to the form they really have. */
10939 stub_entry = (struct ppc_stub_hash_entry *) gen_entry;
63bc6f6c
AM		 10940 info = in_arg;
10941
10942 htab = ppc_hash_table (info);
4dfe6ac6
NC		 10943 if (htab == NULL)
10944 return FALSE;
721956f4 10945
794e51c0
AM		 10946 if (stub_entry->stub_type == ppc_stub_plt_call
10947 || stub_entry->stub_type == ppc_stub_plt_call_r2save)
721956f4 10948 {
e054468f
AM		 10949 asection *plt;
10950 off = stub_entry->plt_ent->plt.offset & ~(bfd_vma) 1;
58ac9f71 10951 if (off >= (bfd_vma) -2)
411e1bfb 10952 abort ();
33e44f2e 10953 plt = htab->elf.splt;
25f23106
AM		 10954 if (!htab->elf.dynamic_sections_created
10955 || stub_entry->h == NULL
10956 || stub_entry->h->elf.dynindx == -1)
33e44f2e 10957 plt = htab->elf.iplt;
e054468f
AM		 10958 off += (plt->output_offset
10959 + plt->output_section->vma
10960 - elf_gp (plt->output_section->owner)
ad8e1ba5 10961 - htab->stub_group[stub_entry->id_sec->id].toc_off);
721956f4 10962
794e51c0 10963 size = plt_stub_size (htab, stub_entry, off);
e7d1c40c 10964 if (htab->params->plt_stub_align)
794e51c0 10965 size += plt_stub_pad (htab, stub_entry, off);
176a0d42
AM		 10966 if (info->emitrelocations)
10967 {
10968 stub_entry->stub_sec->reloc_count
b9e5796b
AM		 10969 += ((PPC_HA (off) != 0)
10970 + (htab->opd_abi
e7d1c40c 10971 ? 2 + (htab->params->plt_static_chain
b9e5796b
AM		 10972 && PPC_HA (off + 16) == PPC_HA (off))
10973 : 1));
176a0d42
AM		 10974 stub_entry->stub_sec->flags |= SEC_RELOC;
10975 }
721956f4
AM		 10976 }
10977 else
10978 {
ad8e1ba5
AM		 10979 /* ppc_stub_long_branch or ppc_stub_plt_branch, or their r2off
10980 variants. */
ac2df442 10981 bfd_vma r2off = 0;
6911b7dc 10982 bfd_vma local_off = 0;
ac2df442 10983
721956f4
AM		 10984 off = (stub_entry->target_value
10985 + stub_entry->target_section->output_offset
10986 + stub_entry->target_section->output_section->vma);
eea6121a 10987 off -= (stub_entry->stub_sec->size
721956f4
AM		 10988 + stub_entry->stub_sec->output_offset
10989 + stub_entry->stub_sec->output_section->vma);
10990
ad8e1ba5
AM		 10991 /* Reset the stub type from the plt variant in case we now
10992 can reach with a shorter stub. */
10993 if (stub_entry->stub_type >= ppc_stub_plt_branch)
10994 stub_entry->stub_type += ppc_stub_long_branch - ppc_stub_plt_branch;
10995
10996 size = 4;
10997 if (stub_entry->stub_type == ppc_stub_long_branch_r2off)
10998 {
25f53a85 10999 r2off = get_r2off (info, stub_entry);
b9e5796b 11000 if (r2off == 0 && htab->opd_abi)
aa374f67
AM		 11001 {
11002 htab->stub_error = TRUE;
11003 return FALSE;
11004 }
ac2df442
AM		 11005 size = 12;
11006 if (PPC_HA (r2off) != 0)
11007 size = 16;
11008 off -= size - 4;
ad8e1ba5
AM		 11009 }
11010
6911b7dc
AM		 11011 local_off = PPC64_LOCAL_ENTRY_OFFSET (stub_entry->other);
11012
b9e5796b
AM		 11013 /* If the branch offset if too big, use a ppc_stub_plt_branch.
11014 Do the same for -R objects without function descriptors. */
11015 if (off + (1 << 25) >= (bfd_vma) (1 << 26) - local_off
11016 || (stub_entry->stub_type == ppc_stub_long_branch_r2off
11017 && r2off == 0))
721956f4
AM		 11018 {
11019 struct ppc_branch_hash_entry *br_entry;
11020
11021 br_entry = ppc_branch_hash_lookup (&htab->branch_hash_table,
11022 stub_entry->root.string + 9,
b34976b6 11023 TRUE, FALSE);
721956f4
AM		 11024 if (br_entry == NULL)
11025 {
8de848d8 11026 info->callbacks->einfo (_("%P: can't build branch stub `%s'\n"),
25f53a85 11027 stub_entry->root.string);
b34976b6
AM		 11028 htab->stub_error = TRUE;
11029 return FALSE;
721956f4
AM		 11030 }
11031
11032 if (br_entry->iter != htab->stub_iteration)
11033 {
11034 br_entry->iter = htab->stub_iteration;
eea6121a
AM		 11035 br_entry->offset = htab->brlt->size;
11036 htab->brlt->size += 8;
63bc6f6c 11037
ee75fd95 11038 if (htab->relbrlt != NULL)
eea6121a 11039 htab->relbrlt->size += sizeof (Elf64_External_Rela);
84f5d08e
AM		 11040 else if (info->emitrelocations)
11041 {
11042 htab->brlt->reloc_count += 1;
11043 htab->brlt->flags |= SEC_RELOC;
11044 }
721956f4 11045 }
ad8e1ba5
AM		 11046
11047 stub_entry->stub_type += ppc_stub_plt_branch - ppc_stub_long_branch;
ac2df442
AM		 11048 off = (br_entry->offset
11049 + htab->brlt->output_offset
11050 + htab->brlt->output_section->vma
11051 - elf_gp (htab->brlt->output_section->owner)
11052 - htab->stub_group[stub_entry->id_sec->id].toc_off);
11053
176a0d42
AM		 11054 if (info->emitrelocations)
11055 {
11056 stub_entry->stub_sec->reloc_count += 1 + (PPC_HA (off) != 0);
11057 stub_entry->stub_sec->flags |= SEC_RELOC;
11058 }
11059
00f412ee 11060 if (stub_entry->stub_type != ppc_stub_plt_branch_r2off)
ac2df442
AM		 11061 {
11062 size = 12;
176a0d42 11063 if (PPC_HA (off) != 0)
ac2df442
AM		 11064 size = 16;
11065 }
11066 else
11067 {
00f412ee 11068 size = 16;
176a0d42 11069 if (PPC_HA (off) != 0)
ac2df442
AM		 11070 size += 4;
11071
11072 if (PPC_HA (r2off) != 0)
11073 size += 4;
00f412ee
AM		 11074 if (PPC_LO (r2off) != 0)
11075 size += 4;
ac2df442 11076 }
721956f4 11077 }
84f5d08e
AM		 11078 else if (info->emitrelocations)
11079 {
11080 stub_entry->stub_sec->reloc_count += 1;
11081 stub_entry->stub_sec->flags |= SEC_RELOC;
11082 }
721956f4
AM		 11083 }
11084
eea6121a 11085 stub_entry->stub_sec->size += size;
b34976b6 11086 return TRUE;
721956f4
AM		 11087}
11088
11089/* Set up various things so that we can make a list of input sections
11090 for each output section included in the link. Returns -1 on error,
cedb70c5 11091 0 when no stubs will be needed, and 1 on success. */
721956f4
AM		 11092
11093int
e7d1c40c 11094ppc64_elf_setup_section_lists (struct bfd_link_info *info)
721956f4
AM		 11095{
11096 bfd *input_bfd;
734b6cf9 11097 int top_id, top_index, id;
721956f4 11098 asection *section;
734b6cf9 11099 asection **input_list;
721956f4
AM		 11100 bfd_size_type amt;
11101 struct ppc_link_hash_table *htab = ppc_hash_table (info);
11102
4dfe6ac6
NC		 11103 if (htab == NULL)
11104 return -1;
4c52953f 11105
1e2f5b6e 11106 /* Find the top input section id. */
3d6f9012 11107 for (input_bfd = info->input_bfds, top_id = 3;
721956f4 11108 input_bfd != NULL;
c72f2fb2 11109 input_bfd = input_bfd->link.next)
721956f4 11110 {
721956f4
AM		 11111 for (section = input_bfd->sections;
11112 section != NULL;
11113 section = section->next)
11114 {
11115 if (top_id < section->id)
11116 top_id = section->id;
11117 }
11118 }
721956f4 11119
8f3bab57 11120 htab->top_id = top_id;
721956f4 11121 amt = sizeof (struct map_stub) * (top_id + 1);
4ce794b7 11122 htab->stub_group = bfd_zmalloc (amt);
721956f4
AM		 11123 if (htab->stub_group == NULL)
11124 return -1;
11125
3d6f9012
AM		 11126 /* Set toc_off for com, und, abs and ind sections. */
11127 for (id = 0; id < 3; id++)
11128 htab->stub_group[id].toc_off = TOC_BASE_OFF;
721956f4 11129
734b6cf9
AM		 11130 /* We can't use output_bfd->section_count here to find the top output
11131 section index as some sections may have been removed, and
8423293d 11132 strip_excluded_output_sections doesn't renumber the indices. */
927be08e 11133 for (section = info->output_bfd->sections, top_index = 0;
734b6cf9
AM		 11134 section != NULL;
11135 section = section->next)
11136 {
11137 if (top_index < section->index)
11138 top_index = section->index;
11139 }
11140
11141 htab->top_index = top_index;
11142 amt = sizeof (asection *) * (top_index + 1);
4ce794b7 11143 input_list = bfd_zmalloc (amt);
734b6cf9
AM		 11144 htab->input_list = input_list;
11145 if (input_list == NULL)
11146 return -1;
11147
721956f4
AM		 11148 return 1;
11149}
11150
927be08e
AM		 11151/* Set up for first pass at multitoc partitioning. */
11152
11153void
11154ppc64_elf_start_multitoc_partition (struct bfd_link_info *info)
11155{
11156 struct ppc_link_hash_table *htab = ppc_hash_table (info);
11157
1c865ab2 11158 htab->toc_curr = ppc64_elf_set_toc (info, info->output_bfd);
927be08e
AM		 11159 htab->toc_bfd = NULL;
11160 htab->toc_first_sec = NULL;
11161}
11162
e717da7e
AM		 11163/* The linker repeatedly calls this function for each TOC input section
11164 and linker generated GOT section. Group input bfds such that the toc
927be08e 11165 within a group is less than 64k in size. */
ad8e1ba5 11166
927be08e 11167bfd_boolean
4ce794b7 11168ppc64_elf_next_toc_section (struct bfd_link_info *info, asection *isec)
ad8e1ba5
AM		 11169{
11170 struct ppc_link_hash_table *htab = ppc_hash_table (info);
d77c8a4b 11171 bfd_vma addr, off, limit;
ad8e1ba5 11172
4dfe6ac6
NC		 11173 if (htab == NULL)
11174 return FALSE;
11175
927be08e 11176 if (!htab->second_toc_pass)
4c52953f 11177 {
927be08e 11178 /* Keep track of the first .toc or .got section for this input bfd. */
a4fd3de5
AM		 11179 bfd_boolean new_bfd = htab->toc_bfd != isec->owner;
11180
11181 if (new_bfd)
bf102f86
AM		 11182 {
11183 htab->toc_bfd = isec->owner;
11184 htab->toc_first_sec = isec;
11185 }
927be08e 11186
bf102f86
AM		 11187 addr = isec->output_offset + isec->output_section->vma;
11188 off = addr - htab->toc_curr;
d77c8a4b
AM		 11189 limit = 0x80008000;
11190 if (ppc64_elf_tdata (isec->owner)->has_small_toc_reloc)
11191 limit = 0x10000;
11192 if (off + isec->size > limit)
bf102f86
AM		 11193 {
11194 addr = (htab->toc_first_sec->output_offset
11195 + htab->toc_first_sec->output_section->vma);
11196 htab->toc_curr = addr;
11197 }
99877b66 11198
927be08e
AM		 11199 /* toc_curr is the base address of this toc group. Set elf_gp
11200 for the input section to be the offset relative to the
11201 output toc base plus 0x8000. Making the input elf_gp an
11202 offset allows us to move the toc as a whole without
11203 recalculating input elf_gp. */
11204 off = htab->toc_curr - elf_gp (isec->output_section->owner);
11205 off += TOC_BASE_OFF;
11206
11207 /* Die if someone uses a linker script that doesn't keep input
11208 file .toc and .got together. */
a4fd3de5
AM		 11209 if (new_bfd
11210 && elf_gp (isec->owner) != 0
927be08e
AM		 11211 && elf_gp (isec->owner) != off)
11212 return FALSE;
11213
11214 elf_gp (isec->owner) = off;
11215 return TRUE;
4c52953f 11216 }
927be08e
AM		 11217
11218 /* During the second pass toc_first_sec points to the start of
11219 a toc group, and toc_curr is used to track the old elf_gp.
11220 We use toc_bfd to ensure we only look at each bfd once. */
11221 if (htab->toc_bfd == isec->owner)
11222 return TRUE;
11223 htab->toc_bfd = isec->owner;
11224
11225 if (htab->toc_first_sec == NULL
11226 || htab->toc_curr != elf_gp (isec->owner))
11227 {
11228 htab->toc_curr = elf_gp (isec->owner);
11229 htab->toc_first_sec = isec;
11230 }
11231 addr = (htab->toc_first_sec->output_offset
11232 + htab->toc_first_sec->output_section->vma);
11233 off = addr - elf_gp (isec->output_section->owner) + TOC_BASE_OFF;
11234 elf_gp (isec->owner) = off;
11235
11236 return TRUE;
ad8e1ba5
AM		 11237}
11238
927be08e
AM		 11239/* Called via elf_link_hash_traverse to merge GOT entries for global
11240 symbol H. */
11241
11242static bfd_boolean
11243merge_global_got (struct elf_link_hash_entry *h, void *inf ATTRIBUTE_UNUSED)
11244{
11245 if (h->root.type == bfd_link_hash_indirect)
11246 return TRUE;
11247
927be08e
AM		 11248 merge_got_entries (&h->got.glist);
11249
11250 return TRUE;
11251}
11252
11253/* Called via elf_link_hash_traverse to allocate GOT entries for global
11254 symbol H. */
11255
11256static bfd_boolean
11257reallocate_got (struct elf_link_hash_entry *h, void *inf)
11258{
11259 struct got_entry *gent;
11260
11261 if (h->root.type == bfd_link_hash_indirect)
11262 return TRUE;
11263
927be08e
AM		 11264 for (gent = h->got.glist; gent != NULL; gent = gent->next)
11265 if (!gent->is_indirect)
11266 allocate_got (h, (struct bfd_link_info *) inf, gent);
11267 return TRUE;
11268}
11269
11270/* Called on the first multitoc pass after the last call to
11271 ppc64_elf_next_toc_section. This function removes duplicate GOT
11272 entries. */
11273
11274bfd_boolean
11275ppc64_elf_layout_multitoc (struct bfd_link_info *info)
ad8e1ba5
AM		 11276{
11277 struct ppc_link_hash_table *htab = ppc_hash_table (info);
927be08e
AM		 11278 struct bfd *ibfd, *ibfd2;
11279 bfd_boolean done_something;
11280
11281 htab->multi_toc_needed = htab->toc_curr != elf_gp (info->output_bfd);
ad8e1ba5 11282
7865406b
AM		 11283 if (!htab->do_multi_toc)
11284 return FALSE;
11285
d0fae19d 11286 /* Merge global sym got entries within a toc group. */
927be08e
AM		 11287 elf_link_hash_traverse (&htab->elf, merge_global_got, info);
11288
11289 /* And tlsld_got. */
c72f2fb2 11290 for (ibfd = info->input_bfds; ibfd != NULL; ibfd = ibfd->link.next)
927be08e
AM		 11291 {
11292 struct got_entry *ent, *ent2;
11293
11294 if (!is_ppc64_elf (ibfd))
11295 continue;
11296
11297 ent = ppc64_tlsld_got (ibfd);
11298 if (!ent->is_indirect
11299 && ent->got.offset != (bfd_vma) -1)
11300 {
c72f2fb2 11301 for (ibfd2 = ibfd->link.next; ibfd2 != NULL; ibfd2 = ibfd2->link.next)
927be08e
AM		 11302 {
11303 if (!is_ppc64_elf (ibfd2))
11304 continue;
11305
11306 ent2 = ppc64_tlsld_got (ibfd2);
11307 if (!ent2->is_indirect
11308 && ent2->got.offset != (bfd_vma) -1
11309 && elf_gp (ibfd2) == elf_gp (ibfd))
11310 {
11311 ent2->is_indirect = TRUE;
11312 ent2->got.ent = ent;
11313 }
11314 }
11315 }
11316 }
11317
11318 /* Zap sizes of got sections. */
33e44f2e
AM		 11319 htab->elf.irelplt->rawsize = htab->elf.irelplt->size;
11320 htab->elf.irelplt->size -= htab->got_reli_size;
927be08e
AM		 11321 htab->got_reli_size = 0;
11322
c72f2fb2 11323 for (ibfd = info->input_bfds; ibfd != NULL; ibfd = ibfd->link.next)
927be08e
AM		 11324 {
11325 asection *got, *relgot;
11326
11327 if (!is_ppc64_elf (ibfd))
11328 continue;
11329
11330 got = ppc64_elf_tdata (ibfd)->got;
11331 if (got != NULL)
11332 {
11333 got->rawsize = got->size;
11334 got->size = 0;
11335 relgot = ppc64_elf_tdata (ibfd)->relgot;
11336 relgot->rawsize = relgot->size;
11337 relgot->size = 0;
11338 }
11339 }
11340
11341 /* Now reallocate the got, local syms first. We don't need to
11342 allocate section contents again since we never increase size. */
c72f2fb2 11343 for (ibfd = info->input_bfds; ibfd != NULL; ibfd = ibfd->link.next)
927be08e
AM		 11344 {
11345 struct got_entry **lgot_ents;
11346 struct got_entry **end_lgot_ents;
11347 struct plt_entry **local_plt;
11348 struct plt_entry **end_local_plt;
f961d9dd 11349 unsigned char *lgot_masks;
927be08e
AM		 11350 bfd_size_type locsymcount;
11351 Elf_Internal_Shdr *symtab_hdr;
19e08130 11352 asection *s;
927be08e
AM		 11353
11354 if (!is_ppc64_elf (ibfd))
11355 continue;
11356
11357 lgot_ents = elf_local_got_ents (ibfd);
11358 if (!lgot_ents)
11359 continue;
11360
11361 symtab_hdr = &elf_symtab_hdr (ibfd);
11362 locsymcount = symtab_hdr->sh_info;
11363 end_lgot_ents = lgot_ents + locsymcount;
11364 local_plt = (struct plt_entry **) end_lgot_ents;
11365 end_local_plt = local_plt + locsymcount;
f961d9dd 11366 lgot_masks = (unsigned char *) end_local_plt;
927be08e 11367 s = ppc64_elf_tdata (ibfd)->got;
927be08e
AM		 11368 for (; lgot_ents < end_lgot_ents; ++lgot_ents, ++lgot_masks)
11369 {
11370 struct got_entry *ent;
11371
11372 for (ent = *lgot_ents; ent != NULL; ent = ent->next)
d0fae19d 11373 {
19e08130
AM		 11374 unsigned int ent_size = 8;
11375 unsigned int rel_size = sizeof (Elf64_External_Rela);
11376
d0fae19d
AM		 11377 ent->got.offset = s->size;
11378 if ((ent->tls_type & *lgot_masks & TLS_GD) != 0)
d0fae19d 11379 {
19e08130
AM		 11380 ent_size *= 2;
11381 rel_size *= 2;
11382 }
11383 s->size += ent_size;
11384 if ((*lgot_masks & PLT_IFUNC) != 0)
11385 {
33e44f2e 11386 htab->elf.irelplt->size += rel_size;
19e08130
AM		 11387 htab->got_reli_size += rel_size;
11388 }
11389 else if (info->shared)
11390 {
11391 asection *srel = ppc64_elf_tdata (ibfd)->relgot;
11392 srel->size += rel_size;
d0fae19d
AM		 11393 }
11394 }
927be08e
AM		 11395 }
11396 }
11397
11398 elf_link_hash_traverse (&htab->elf, reallocate_got, info);
11399
c72f2fb2 11400 for (ibfd = info->input_bfds; ibfd != NULL; ibfd = ibfd->link.next)
927be08e
AM		 11401 {
11402 struct got_entry *ent;
11403
11404 if (!is_ppc64_elf (ibfd))
11405 continue;
11406
11407 ent = ppc64_tlsld_got (ibfd);
11408 if (!ent->is_indirect
11409 && ent->got.offset != (bfd_vma) -1)
11410 {
11411 asection *s = ppc64_elf_tdata (ibfd)->got;
11412 ent->got.offset = s->size;
11413 s->size += 16;
11414 if (info->shared)
11415 {
11416 asection *srel = ppc64_elf_tdata (ibfd)->relgot;
11417 srel->size += sizeof (Elf64_External_Rela);
11418 }
11419 }
11420 }
11421
33e44f2e 11422 done_something = htab->elf.irelplt->rawsize != htab->elf.irelplt->size;
927be08e 11423 if (!done_something)
c72f2fb2 11424 for (ibfd = info->input_bfds; ibfd != NULL; ibfd = ibfd->link.next)
927be08e
AM		 11425 {
11426 asection *got;
11427
11428 if (!is_ppc64_elf (ibfd))
11429 continue;
11430
11431 got = ppc64_elf_tdata (ibfd)->got;
11432 if (got != NULL)
11433 {
11434 done_something = got->rawsize != got->size;
11435 if (done_something)
11436 break;
11437 }
11438 }
11439
11440 if (done_something)
e7d1c40c 11441 (*htab->params->layout_sections_again) ();
927be08e
AM		 11442
11443 /* Set up for second pass over toc sections to recalculate elf_gp
11444 on input sections. */
11445 htab->toc_bfd = NULL;
11446 htab->toc_first_sec = NULL;
11447 htab->second_toc_pass = TRUE;
11448 return done_something;
11449}
11450
11451/* Called after second pass of multitoc partitioning. */
11452
11453void
11454ppc64_elf_finish_multitoc_partition (struct bfd_link_info *info)
11455{
11456 struct ppc_link_hash_table *htab = ppc_hash_table (info);
11457
11458 /* After the second pass, toc_curr tracks the TOC offset used
11459 for code sections below in ppc64_elf_next_input_section. */
3d6f9012 11460 htab->toc_curr = TOC_BASE_OFF;
ad8e1ba5
AM		 11461}
11462
9b5ecbd0
AM		 11463/* No toc references were found in ISEC. If the code in ISEC makes no
11464 calls, then there's no need to use toc adjusting stubs when branching
11465 into ISEC. Actually, indirect calls from ISEC are OK as they will
4c52953f
AM		 11466 load r2. Returns -1 on error, 0 for no stub needed, 1 for stub
11467 needed, and 2 if a cyclical call-graph was found but no other reason
11468 for a stub was detected. If called from the top level, a return of
11469 2 means the same as a return of 0. */
9b5ecbd0
AM		 11470
11471static int
4ce794b7 11472toc_adjusting_stub_needed (struct bfd_link_info *info, asection *isec)
9b5ecbd0 11473{
9b5ecbd0 11474 int ret;
70cc837d
AM		 11475
11476 /* Mark this section as checked. */
11477 isec->call_check_done = 1;
9b5ecbd0 11478
772119ce
AM		 11479 /* We know none of our code bearing sections will need toc stubs. */
11480 if ((isec->flags & SEC_LINKER_CREATED) != 0)
11481 return 0;
11482
eea6121a 11483 if (isec->size == 0)
082c50f8
AM		 11484 return 0;
11485
4c52953f
AM		 11486 if (isec->output_section == NULL)
11487 return 0;
11488
4c52953f 11489 ret = 0;
70cc837d 11490 if (isec->reloc_count != 0)
9b5ecbd0 11491 {
70cc837d
AM		 11492 Elf_Internal_Rela *relstart, *rel;
11493 Elf_Internal_Sym *local_syms;
11494 struct ppc_link_hash_table *htab;
2917689a 11495
70cc837d
AM		 11496 relstart = _bfd_elf_link_read_relocs (isec->owner, isec, NULL, NULL,
11497 info->keep_memory);
11498 if (relstart == NULL)
11499 return -1;
90aecf7a 11500
70cc837d
AM		 11501 /* Look for branches to outside of this section. */
11502 local_syms = NULL;
11503 htab = ppc_hash_table (info);
11504 if (htab == NULL)
11505 return -1;
4c52953f 11506
70cc837d 11507 for (rel = relstart; rel < relstart + isec->reloc_count; ++rel)
4c52953f 11508 {
70cc837d
AM		 11509 enum elf_ppc64_reloc_type r_type;
11510 unsigned long r_symndx;
11511 struct elf_link_hash_entry *h;
11512 struct ppc_link_hash_entry *eh;
11513 Elf_Internal_Sym *sym;
11514 asection *sym_sec;
11515 struct _opd_sec_data *opd;
11516 bfd_vma sym_value;
11517 bfd_vma dest;
11518
11519 r_type = ELF64_R_TYPE (rel->r_info);
11520 if (r_type != R_PPC64_REL24
11521 && r_type != R_PPC64_REL14
11522 && r_type != R_PPC64_REL14_BRTAKEN
11523 && r_type != R_PPC64_REL14_BRNTAKEN)
11524 continue;
4c52953f 11525
70cc837d
AM		 11526 r_symndx = ELF64_R_SYM (rel->r_info);
11527 if (!get_sym_h (&h, &sym, &sym_sec, NULL, &local_syms, r_symndx,
11528 isec->owner))
4c52953f 11529 {
70cc837d
AM		 11530 ret = -1;
11531 break;
11532 }
4c52953f 11533
70cc837d
AM		 11534 /* Calls to dynamic lib functions go through a plt call stub
11535 that uses r2. */
11536 eh = (struct ppc_link_hash_entry *) h;
11537 if (eh != NULL
11538 && (eh->elf.plt.plist != NULL
11539 || (eh->oh != NULL
11540 && ppc_follow_link (eh->oh)->elf.plt.plist != NULL)))
11541 {
11542 ret = 1;
11543 break;
4c52953f
AM		 11544 }
11545
70cc837d
AM		 11546 if (sym_sec == NULL)
11547 /* Ignore other undefined symbols. */
4c52953f 11548 continue;
4c52953f 11549
70cc837d
AM		 11550 /* Assume branches to other sections not included in the
11551 link need stubs too, to cover -R and absolute syms. */
11552 if (sym_sec->output_section == NULL)
11553 {
11554 ret = 1;
11555 break;
11556 }
4c52953f 11557
70cc837d
AM		 11558 if (h == NULL)
11559 sym_value = sym->st_value;
11560 else
11561 {
11562 if (h->root.type != bfd_link_hash_defined
11563 && h->root.type != bfd_link_hash_defweak)
11564 abort ();
11565 sym_value = h->root.u.def.value;
11566 }
11567 sym_value += rel->r_addend;
4c52953f 11568
70cc837d
AM		 11569 /* If this branch reloc uses an opd sym, find the code section. */
11570 opd = get_opd_info (sym_sec);
11571 if (opd != NULL)
11572 {
11573 if (h == NULL && opd->adjust != NULL)
11574 {
11575 long adjust;
4c52953f 11576
70cc837d
AM		 11577 adjust = opd->adjust[sym->st_value / 8];
11578 if (adjust == -1)
11579 /* Assume deleted functions won't ever be called. */
11580 continue;
11581 sym_value += adjust;
11582 }
4c52953f 11583
aef36ac1
AM		 11584 dest = opd_entry_value (sym_sec, sym_value,
11585 &sym_sec, NULL, FALSE);
70cc837d
AM		 11586 if (dest == (bfd_vma) -1)
11587 continue;
11588 }
11589 else
11590 dest = (sym_value
11591 + sym_sec->output_offset
11592 + sym_sec->output_section->vma);
4c52953f 11593
70cc837d
AM		 11594 /* Ignore branch to self. */
11595 if (sym_sec == isec)
11596 continue;
4c52953f 11597
70cc837d
AM		 11598 /* If the called function uses the toc, we need a stub. */
11599 if (sym_sec->has_toc_reloc
11600 || sym_sec->makes_toc_func_call)
4c52953f 11601 {
70cc837d 11602 ret = 1;
4c52953f
AM		 11603 break;
11604 }
70cc837d
AM		 11605
11606 /* Assume any branch that needs a long branch stub might in fact
11607 need a plt_branch stub. A plt_branch stub uses r2. */
11608 else if (dest - (isec->output_offset
11609 + isec->output_section->vma
6911b7dc
AM		 11610 + rel->r_offset) + (1 << 25)
11611 >= (2u << 25) - PPC64_LOCAL_ENTRY_OFFSET (h
11612 ? h->other
11613 : sym->st_other))
4c52953f 11614 {
70cc837d
AM		 11615 ret = 1;
11616 break;
11617 }
11618
11619 /* If calling back to a section in the process of being
11620 tested, we can't say for sure that no toc adjusting stubs
11621 are needed, so don't return zero. */
11622 else if (sym_sec->call_check_in_progress)
11623 ret = 2;
11624
11625 /* Branches to another section that itself doesn't have any TOC
11626 references are OK. Recursively call ourselves to check. */
11627 else if (!sym_sec->call_check_done)
11628 {
11629 int recur;
11630
11631 /* Mark current section as indeterminate, so that other
11632 sections that call back to current won't be marked as
11633 known. */
11634 isec->call_check_in_progress = 1;
11635 recur = toc_adjusting_stub_needed (info, sym_sec);
11636 isec->call_check_in_progress = 0;
11637
4c52953f
AM		 11638 if (recur != 0)
11639 {
70cc837d
AM		 11640 ret = recur;
11641 if (recur != 2)
11642 break;
4c52953f
AM		 11643 }
11644 }
4c52953f 11645 }
70cc837d
AM		 11646
11647 if (local_syms != NULL
11648 && (elf_symtab_hdr (isec->owner).contents
11649 != (unsigned char *) local_syms))
11650 free (local_syms);
11651 if (elf_section_data (isec)->relocs != relstart)
11652 free (relstart);
9b5ecbd0
AM		 11653 }
11654
70cc837d
AM		 11655 if ((ret & 1) == 0
11656 && isec->map_head.s != NULL
11657 && (strcmp (isec->output_section->name, ".init") == 0
11658 || strcmp (isec->output_section->name, ".fini") == 0))
11659 {
11660 if (isec->map_head.s->has_toc_reloc
11661 || isec->map_head.s->makes_toc_func_call)
11662 ret = 1;
11663 else if (!isec->map_head.s->call_check_done)
11664 {
11665 int recur;
11666 isec->call_check_in_progress = 1;
11667 recur = toc_adjusting_stub_needed (info, isec->map_head.s);
11668 isec->call_check_in_progress = 0;
11669 if (recur != 0)
11670 ret = recur;
11671 }
11672 }
11673
11674 if (ret == 1)
11675 isec->makes_toc_func_call = 1;
4c52953f 11676
9b5ecbd0
AM		 11677 return ret;
11678}
11679
721956f4
AM		 11680/* The linker repeatedly calls this function for each input section,
11681 in the order that input sections are linked into output sections.
11682 Build lists of input sections to determine groupings between which
11683 we may insert linker stubs. */
11684
9b5ecbd0 11685bfd_boolean
4ce794b7 11686ppc64_elf_next_input_section (struct bfd_link_info *info, asection *isec)
721956f4
AM		 11687{
11688 struct ppc_link_hash_table *htab = ppc_hash_table (info);
11689
4dfe6ac6
NC		 11690 if (htab == NULL)
11691 return FALSE;
11692
734b6cf9
AM		 11693 if ((isec->output_section->flags & SEC_CODE) != 0
11694 && isec->output_section->index <= htab->top_index)
721956f4 11695 {
734b6cf9 11696 asection **list = htab->input_list + isec->output_section->index;
3d6f9012 11697 /* Steal the link_sec pointer for our list. */
721956f4 11698#define PREV_SEC(sec) (htab->stub_group[(sec)->id].link_sec)
3d6f9012
AM		 11699 /* This happens to make the list in reverse order,
11700 which is what we want. */
734b6cf9
AM		 11701 PREV_SEC (isec) = *list;
11702 *list = isec;
721956f4 11703 }
ad8e1ba5 11704
4c52953f 11705 if (htab->multi_toc_needed)
9b5ecbd0 11706 {
8b974ba3
AM		 11707 /* Analyse sections that aren't already flagged as needing a
11708 valid toc pointer. Exclude .fixup for the linux kernel.
11709 .fixup contains branches, but only back to the function that
11710 hit an exception. */
11711 if (!(isec->has_toc_reloc
11712 || (isec->flags & SEC_CODE) == 0
11713 || strcmp (isec->name, ".fixup") == 0
11714 || isec->call_check_done))
11715 {
11716 if (toc_adjusting_stub_needed (info, isec) < 0)
6683a28d 11717 return FALSE;
8b974ba3
AM		 11718 }
11719 /* Make all sections use the TOC assigned for this object file.
11720 This will be wrong for pasted sections; We fix that in
11721 check_pasted_section(). */
11722 if (elf_gp (isec->owner) != 0)
11723 htab->toc_curr = elf_gp (isec->owner);
11724 }
11725
ad8e1ba5 11726 htab->stub_group[isec->id].toc_off = htab->toc_curr;
9b5ecbd0 11727 return TRUE;
721956f4
AM		 11728}
11729
70cc837d
AM		 11730/* Check that all .init and .fini sections use the same toc, if they
11731 have toc relocs. */
11732
11733static bfd_boolean
11734check_pasted_section (struct bfd_link_info *info, const char *name)
11735{
11736 asection *o = bfd_get_section_by_name (info->output_bfd, name);
11737
11738 if (o != NULL)
11739 {
11740 struct ppc_link_hash_table *htab = ppc_hash_table (info);
11741 bfd_vma toc_off = 0;
11742 asection *i;
11743
11744 for (i = o->map_head.s; i != NULL; i = i->map_head.s)
11745 if (i->has_toc_reloc)
11746 {
11747 if (toc_off == 0)
11748 toc_off = htab->stub_group[i->id].toc_off;
11749 else if (toc_off != htab->stub_group[i->id].toc_off)
11750 return FALSE;
11751 }
6683a28d
AM		 11752
11753 if (toc_off == 0)
11754 for (i = o->map_head.s; i != NULL; i = i->map_head.s)
11755 if (i->makes_toc_func_call)
11756 {
11757 toc_off = htab->stub_group[i->id].toc_off;
11758 break;
11759 }
11760
70cc837d
AM		 11761 /* Make sure the whole pasted function uses the same toc offset. */
11762 if (toc_off != 0)
11763 for (i = o->map_head.s; i != NULL; i = i->map_head.s)
11764 htab->stub_group[i->id].toc_off = toc_off;
11765 }
11766 return TRUE;
11767}
11768
11769bfd_boolean
11770ppc64_elf_check_init_fini (struct bfd_link_info *info)
11771{
11772 return (check_pasted_section (info, ".init")
11773 & check_pasted_section (info, ".fini"));
11774}
11775
721956f4
AM		 11776/* See whether we can group stub sections together. Grouping stub
11777 sections may result in fewer stubs. More importantly, we need to
11778 put all .init* and .fini* stubs at the beginning of the .init or
11779 .fini output sections respectively, because glibc splits the
11780 _init and _fini functions into multiple parts. Putting a stub in
11781 the middle of a function is not a good idea. */
11782
11783static void
4ce794b7
AM		 11784group_sections (struct ppc_link_hash_table *htab,
11785 bfd_size_type stub_group_size,
11786 bfd_boolean stubs_always_before_branch)
721956f4 11787{
7c8fe5c4
AM		 11788 asection **list;
11789 bfd_size_type stub14_group_size;
11790 bfd_boolean suppress_size_errors;
11791
11792 suppress_size_errors = FALSE;
11793 stub14_group_size = stub_group_size;
11794 if (stub_group_size == 1)
11795 {
11796 /* Default values. */
11797 if (stubs_always_before_branch)
11798 {
11799 stub_group_size = 0x1e00000;
11800 stub14_group_size = 0x7800;
11801 }
11802 else
11803 {
11804 stub_group_size = 0x1c00000;
11805 stub14_group_size = 0x7000;
11806 }
11807 suppress_size_errors = TRUE;
11808 }
11809
11810 list = htab->input_list + htab->top_index;
734b6cf9 11811 do
721956f4 11812 {
734b6cf9
AM		 11813 asection *tail = *list;
11814 while (tail != NULL)
721956f4 11815 {
734b6cf9
AM		 11816 asection *curr;
11817 asection *prev;
11818 bfd_size_type total;
11819 bfd_boolean big_sec;
11820 bfd_vma curr_toc;
11821
11822 curr = tail;
eea6121a 11823 total = tail->size;
6bee8834
AM		 11824 big_sec = total > (ppc64_elf_section_data (tail) != NULL
11825 && ppc64_elf_section_data (tail)->has_14bit_branch
7c8fe5c4
AM		 11826 ? stub14_group_size : stub_group_size);
11827 if (big_sec && !suppress_size_errors)
5c3dead3
AM		 11828 (*_bfd_error_handler) (_("%B section %A exceeds stub group size"),
11829 tail->owner, tail);
734b6cf9
AM		 11830 curr_toc = htab->stub_group[tail->id].toc_off;
11831
11832 while ((prev = PREV_SEC (curr)) != NULL
11833 && ((total += curr->output_offset - prev->output_offset)
6bee8834
AM		 11834 < (ppc64_elf_section_data (prev) != NULL
11835 && ppc64_elf_section_data (prev)->has_14bit_branch
7c8fe5c4 11836 ? stub14_group_size : stub_group_size))
ad8e1ba5 11837 && htab->stub_group[prev->id].toc_off == curr_toc)
734b6cf9
AM		 11838 curr = prev;
11839
11840 /* OK, the size from the start of CURR to the end is less
11841 than stub_group_size and thus can be handled by one stub
11842 section. (or the tail section is itself larger than
11843 stub_group_size, in which case we may be toast.) We
11844 should really be keeping track of the total size of stubs
11845 added here, as stubs contribute to the final output
11846 section size. That's a little tricky, and this way will
11847 only break if stubs added make the total size more than
11848 2^25, ie. for the default stub_group_size, if stubs total
11849 more than 2097152 bytes, or nearly 75000 plt call stubs. */
11850 do
721956f4
AM		 11851 {
11852 prev = PREV_SEC (tail);
734b6cf9 11853 /* Set up this stub group. */
721956f4
AM		 11854 htab->stub_group[tail->id].link_sec = curr;
11855 }
734b6cf9
AM		 11856 while (tail != curr && (tail = prev) != NULL);
11857
11858 /* But wait, there's more! Input sections up to stub_group_size
11859 bytes before the stub section can be handled by it too.
11860 Don't do this if we have a really large section after the
11861 stubs, as adding more stubs increases the chance that
11862 branches may not reach into the stub section. */
11863 if (!stubs_always_before_branch && !big_sec)
11864 {
11865 total = 0;
11866 while (prev != NULL
11867 && ((total += tail->output_offset - prev->output_offset)
6bee8834
AM		 11868 < (ppc64_elf_section_data (prev) != NULL
11869 && ppc64_elf_section_data (prev)->has_14bit_branch
7c8fe5c4 11870 ? stub14_group_size : stub_group_size))
734b6cf9
AM		 11871 && htab->stub_group[prev->id].toc_off == curr_toc)
11872 {
11873 tail = prev;
11874 prev = PREV_SEC (tail);
11875 htab->stub_group[tail->id].link_sec = curr;
11876 }
11877 }
11878 tail = prev;
721956f4
AM		 11879 }
11880 }
734b6cf9
AM		 11881 while (list-- != htab->input_list);
11882 free (htab->input_list);
721956f4
AM		 11883#undef PREV_SEC
11884}
11885
58d180e8
AM		 11886static const unsigned char glink_eh_frame_cie[] =
11887{
11888 0, 0, 0, 16, /* length. */
11889 0, 0, 0, 0, /* id. */
11890 1, /* CIE version. */
11891 'z', 'R', 0, /* Augmentation string. */
11892 4, /* Code alignment. */
11893 0x78, /* Data alignment. */
11894 65, /* RA reg. */
11895 1, /* Augmentation size. */
11896 DW_EH_PE_pcrel | DW_EH_PE_sdata4, /* FDE encoding. */
da44f4e5
AM		 11897 DW_CFA_def_cfa, 1, 0, /* def_cfa: r1 offset 0. */
11898 0, 0, 0, 0
58d180e8
AM		 11899};
11900
d969d15f
AM		 11901/* Stripping output sections is normally done before dynamic section
11902 symbols have been allocated. This function is called later, and
11903 handles cases like htab->brlt which is mapped to its own output
11904 section. */
11905
11906static void
11907maybe_strip_output (struct bfd_link_info *info, asection *isec)
11908{
11909 if (isec->size == 0
11910 && isec->output_section->size == 0
53d8967a 11911 && !(isec->output_section->flags & SEC_KEEP)
d969d15f
AM		 11912 && !bfd_section_removed_from_list (info->output_bfd,
11913 isec->output_section)
11914 && elf_section_data (isec->output_section)->dynindx == 0)
11915 {
11916 isec->output_section->flags |= SEC_EXCLUDE;
11917 bfd_section_list_remove (info->output_bfd, isec->output_section);
11918 info->output_bfd->section_count--;
11919 }
11920}
11921
721956f4
AM		 11922/* Determine and set the size of the stub section for a final link.
11923
11924 The basic idea here is to examine all the relocations looking for
11925 PC-relative calls to a target that is unreachable with a "bl"
11926 instruction. */
11927
b34976b6 11928bfd_boolean
e7d1c40c 11929ppc64_elf_size_stubs (struct bfd_link_info *info)
721956f4
AM		 11930{
11931 bfd_size_type stub_group_size;
b34976b6 11932 bfd_boolean stubs_always_before_branch;
721956f4
AM		 11933 struct ppc_link_hash_table *htab = ppc_hash_table (info);
11934
4dfe6ac6
NC		 11935 if (htab == NULL)
11936 return FALSE;
11937
e7d1c40c
AM		 11938 if (htab->params->plt_thread_safe == -1 && !info->executable)
11939 htab->params->plt_thread_safe = 1;
b9e5796b 11940 if (!htab->opd_abi)
e7d1c40c
AM		 11941 htab->params->plt_thread_safe = 0;
11942 else if (htab->params->plt_thread_safe == -1)
794e51c0 11943 {
e2458743 11944 static const char *const thread_starter[] =
794e51c0
AM		 11945 {
11946 "pthread_create",
11947 /* libstdc++ */
11948 "_ZNSt6thread15_M_start_threadESt10shared_ptrINS_10_Impl_baseEE",
11949 /* librt */
11950 "aio_init", "aio_read", "aio_write", "aio_fsync", "lio_listio",
11951 "mq_notify", "create_timer",
11952 /* libanl */
11953 "getaddrinfo_a",
11954 /* libgomp */
11955 "GOMP_parallel_start",
11956 "GOMP_parallel_loop_static_start",
11957 "GOMP_parallel_loop_dynamic_start",
11958 "GOMP_parallel_loop_guided_start",
11959 "GOMP_parallel_loop_runtime_start",
68ffbac6 11960 "GOMP_parallel_sections_start",
794e51c0
AM		 11961 };
11962 unsigned i;
11963
11964 for (i = 0; i < sizeof (thread_starter)/ sizeof (thread_starter[0]); i++)
11965 {
11966 struct elf_link_hash_entry *h;
11967 h = elf_link_hash_lookup (&htab->elf, thread_starter[i],
11968 FALSE, FALSE, TRUE);
e7d1c40c
AM		 11969 htab->params->plt_thread_safe = h != NULL && h->ref_regular;
11970 if (htab->params->plt_thread_safe)
794e51c0
AM		 11971 break;
11972 }
11973 }
e7d1c40c
AM		 11974 stubs_always_before_branch = htab->params->group_size < 0;
11975 if (htab->params->group_size < 0)
11976 stub_group_size = -htab->params->group_size;
721956f4 11977 else
e7d1c40c 11978 stub_group_size = htab->params->group_size;
721956f4
AM		 11979
11980 group_sections (htab, stub_group_size, stubs_always_before_branch);
11981
721956f4
AM		 11982 while (1)
11983 {
11984 bfd *input_bfd;
11985 unsigned int bfd_indx;
11986 asection *stub_sec;
721956f4
AM		 11987
11988 htab->stub_iteration += 1;
721956f4
AM		 11989
11990 for (input_bfd = info->input_bfds, bfd_indx = 0;
11991 input_bfd != NULL;
c72f2fb2 11992 input_bfd = input_bfd->link.next, bfd_indx++)
721956f4
AM		 11993 {
11994 Elf_Internal_Shdr *symtab_hdr;
11995 asection *section;
6cdc0ccc 11996 Elf_Internal_Sym *local_syms = NULL;
721956f4 11997
0c8d6e5c 11998 if (!is_ppc64_elf (input_bfd))
67f93c31
AM		 11999 continue;
12000
721956f4 12001 /* We'll need the symbol table in a second. */
0ffa91dd 12002 symtab_hdr = &elf_symtab_hdr (input_bfd);
721956f4
AM		 12003 if (symtab_hdr->sh_info == 0)
12004 continue;
12005
721956f4
AM		 12006 /* Walk over each section attached to the input bfd. */
12007 for (section = input_bfd->sections;
12008 section != NULL;
12009 section = section->next)
12010 {
721956f4 12011 Elf_Internal_Rela *internal_relocs, *irelaend, *irela;
721956f4
AM		 12012
12013 /* If there aren't any relocs, then there's nothing more
12014 to do. */
12015 if ((section->flags & SEC_RELOC) == 0
12c0f757
AM		 12016 || (section->flags & SEC_ALLOC) == 0
12017 || (section->flags & SEC_LOAD) == 0
12018 || (section->flags & SEC_CODE) == 0
721956f4
AM		 12019 || section->reloc_count == 0)
12020 continue;
12021
12022 /* If this section is a link-once section that will be
12023 discarded, then don't create any stubs. */
12024 if (section->output_section == NULL
927be08e 12025 || section->output_section->owner != info->output_bfd)
721956f4
AM		 12026 continue;
12027
1e2f5b6e
AM		 12028 /* Get the relocs. */
12029 internal_relocs
4ce794b7 12030 = _bfd_elf_link_read_relocs (input_bfd, section, NULL, NULL,
45d6a902 12031 info->keep_memory);
721956f4 12032 if (internal_relocs == NULL)
1e2f5b6e 12033 goto error_ret_free_local;
721956f4
AM		 12034
12035 /* Now examine each relocation. */
12036 irela = internal_relocs;
12037 irelaend = irela + section->reloc_count;
12038 for (; irela < irelaend; irela++)
12039 {
4ce794b7
AM		 12040 enum elf_ppc64_reloc_type r_type;
12041 unsigned int r_indx;
721956f4
AM		 12042 enum ppc_stub_type stub_type;
12043 struct ppc_stub_hash_entry *stub_entry;
8387904d 12044 asection *sym_sec, *code_sec;
e054468f 12045 bfd_vma sym_value, code_value;
721956f4 12046 bfd_vma destination;
6911b7dc 12047 unsigned long local_off;
8843416a 12048 bfd_boolean ok_dest;
721956f4 12049 struct ppc_link_hash_entry *hash;
8387904d 12050 struct ppc_link_hash_entry *fdh;
411e1bfb
AM		 12051 struct elf_link_hash_entry *h;
12052 Elf_Internal_Sym *sym;
721956f4
AM		 12053 char *stub_name;
12054 const asection *id_sec;
74f0fb50 12055 struct _opd_sec_data *opd;
e054468f 12056 struct plt_entry *plt_ent;
721956f4
AM		 12057
12058 r_type = ELF64_R_TYPE (irela->r_info);
12059 r_indx = ELF64_R_SYM (irela->r_info);
12060
4ce794b7 12061 if (r_type >= R_PPC64_max)
721956f4
AM		 12062 {
12063 bfd_set_error (bfd_error_bad_value);
6cdc0ccc 12064 goto error_ret_free_internal;
721956f4
AM		 12065 }
12066
12067 /* Only look for stubs on branch instructions. */
4ce794b7
AM		 12068 if (r_type != R_PPC64_REL24
12069 && r_type != R_PPC64_REL14
12070 && r_type != R_PPC64_REL14_BRTAKEN
12071 && r_type != R_PPC64_REL14_BRNTAKEN)
721956f4
AM		 12072 continue;
12073
12074 /* Now determine the call target, its name, value,
12075 section. */
411e1bfb
AM		 12076 if (!get_sym_h (&h, &sym, &sym_sec, NULL, &local_syms,
12077 r_indx, input_bfd))
12078 goto error_ret_free_internal;
12079 hash = (struct ppc_link_hash_entry *) h;
12080
8843416a 12081 ok_dest = FALSE;
8387904d 12082 fdh = NULL;
7fe2b9a6 12083 sym_value = 0;
411e1bfb 12084 if (hash == NULL)
721956f4 12085 {
411e1bfb 12086 sym_value = sym->st_value;
8843416a 12087 ok_dest = TRUE;
721956f4 12088 }
7fe2b9a6
AM		 12089 else if (hash->elf.root.type == bfd_link_hash_defined
12090 || hash->elf.root.type == bfd_link_hash_defweak)
12091 {
12092 sym_value = hash->elf.root.u.def.value;
12093 if (sym_sec->output_section != NULL)
12094 ok_dest = TRUE;
12095 }
12096 else if (hash->elf.root.type == bfd_link_hash_undefweak
12097 || hash->elf.root.type == bfd_link_hash_undefined)
721956f4 12098 {
99877b66 12099 /* Recognise an old ABI func code entry sym, and
7fe2b9a6
AM		 12100 use the func descriptor sym instead if it is
12101 defined. */
ceb1f1ef 12102 if (hash->elf.root.root.string[0] == '.'
b31867b6 12103 && (fdh = lookup_fdh (hash, htab)) != NULL)
8387904d 12104 {
8387904d
AM		 12105 if (fdh->elf.root.type == bfd_link_hash_defined
12106 || fdh->elf.root.type == bfd_link_hash_defweak)
12107 {
12108 sym_sec = fdh->elf.root.u.def.section;
12109 sym_value = fdh->elf.root.u.def.value;
12110 if (sym_sec->output_section != NULL)
12111 ok_dest = TRUE;
12112 }
99877b66
AM		 12113 else
12114 fdh = NULL;
8387904d 12115 }
7fe2b9a6
AM		 12116 }
12117 else
12118 {
12119 bfd_set_error (bfd_error_bad_value);
12120 goto error_ret_free_internal;
721956f4
AM		 12121 }
12122
8843416a 12123 destination = 0;
6911b7dc 12124 local_off = 0;
8843416a
AM		 12125 if (ok_dest)
12126 {
12127 sym_value += irela->r_addend;
12128 destination = (sym_value
12129 + sym_sec->output_offset
12130 + sym_sec->output_section->vma);
6911b7dc
AM		 12131 local_off = PPC64_LOCAL_ENTRY_OFFSET (hash
12132 ? hash->elf.other
12133 : sym->st_other);
8843416a
AM		 12134 }
12135
8387904d 12136 code_sec = sym_sec;
e054468f 12137 code_value = sym_value;
74f0fb50
AM		 12138 opd = get_opd_info (sym_sec);
12139 if (opd != NULL)
8387904d
AM		 12140 {
12141 bfd_vma dest;
12142
74f0fb50 12143 if (hash == NULL && opd->adjust != NULL)
8387904d 12144 {
74f0fb50 12145 long adjust = opd->adjust[sym_value / 8];
8387904d
AM		 12146 if (adjust == -1)
12147 continue;
e054468f 12148 code_value += adjust;
8387904d
AM		 12149 sym_value += adjust;
12150 }
12151 dest = opd_entry_value (sym_sec, sym_value,
aef36ac1 12152 &code_sec, &code_value, FALSE);
8387904d
AM		 12153 if (dest != (bfd_vma) -1)
12154 {
12155 destination = dest;
12156 if (fdh != NULL)
12157 {
12158 /* Fixup old ABI sym to point at code
12159 entry. */
99877b66 12160 hash->elf.root.type = bfd_link_hash_defweak;
8387904d 12161 hash->elf.root.u.def.section = code_sec;
e054468f 12162 hash->elf.root.u.def.value = code_value;
8387904d
AM		 12163 }
12164 }
12165 }
12166
721956f4 12167 /* Determine what (if any) linker stub is needed. */
e054468f 12168 plt_ent = NULL;
721956f4 12169 stub_type = ppc_type_of_stub (section, irela, &hash,
6911b7dc
AM		 12170 &plt_ent, destination,
12171 local_off);
ad8e1ba5
AM		 12172
12173 if (stub_type != ppc_stub_plt_call)
12174 {
12175 /* Check whether we need a TOC adjusting stub.
12176 Since the linker pastes together pieces from
12177 different object files when creating the
12178 _init and _fini functions, it may be that a
12179 call to what looks like a local sym is in
12180 fact a call needing a TOC adjustment. */
8387904d
AM		 12181 if (code_sec != NULL
12182 && code_sec->output_section != NULL
12183 && (htab->stub_group[code_sec->id].toc_off
9b5ecbd0 12184 != htab->stub_group[section->id].toc_off)
4c52953f
AM		 12185 && (code_sec->has_toc_reloc
12186 || code_sec->makes_toc_func_call))
ad8e1ba5
AM		 12187 stub_type = ppc_stub_long_branch_r2off;
12188 }
12189
721956f4
AM		 12190 if (stub_type == ppc_stub_none)
12191 continue;
12192
411e1bfb
AM		 12193 /* __tls_get_addr calls might be eliminated. */
12194 if (stub_type != ppc_stub_plt_call
12195 && hash != NULL
8387904d
AM		 12196 && (hash == htab->tls_get_addr
12197 || hash == htab->tls_get_addr_fd)
411e1bfb
AM		 12198 && section->has_tls_reloc
12199 && irela != internal_relocs)
12200 {
12201 /* Get tls info. */
f961d9dd 12202 unsigned char *tls_mask;
411e1bfb 12203
3a71aa26 12204 if (!get_tls_mask (&tls_mask, NULL, NULL, &local_syms,
411e1bfb
AM		 12205 irela - 1, input_bfd))
12206 goto error_ret_free_internal;
e7b938ca 12207 if (*tls_mask != 0)
411e1bfb
AM		 12208 continue;
12209 }
12210
3b421ab3
AM		 12211 if (stub_type == ppc_stub_plt_call
12212 && irela + 1 < irelaend
12213 && irela[1].r_offset == irela->r_offset + 4
794e51c0
AM		 12214 && ELF64_R_TYPE (irela[1].r_info) == R_PPC64_TOCSAVE)
12215 {
12216 if (!tocsave_find (htab, INSERT,
12217 &local_syms, irela + 1, input_bfd))
12218 goto error_ret_free_internal;
12219 }
12220 else if (stub_type == ppc_stub_plt_call)
12221 stub_type = ppc_stub_plt_call_r2save;
3b421ab3 12222
721956f4
AM		 12223 /* Support for grouping stub sections. */
12224 id_sec = htab->stub_group[section->id].link_sec;
12225
12226 /* Get the name of this stub. */
12227 stub_name = ppc_stub_name (id_sec, sym_sec, hash, irela);
12228 if (!stub_name)
12229 goto error_ret_free_internal;
12230
12231 stub_entry = ppc_stub_hash_lookup (&htab->stub_hash_table,
b34976b6 12232 stub_name, FALSE, FALSE);
721956f4
AM		 12233 if (stub_entry != NULL)
12234 {
12235 /* The proper stub has already been created. */
12236 free (stub_name);
794e51c0
AM		 12237 if (stub_type == ppc_stub_plt_call_r2save)
12238 stub_entry->stub_type = stub_type;
721956f4
AM		 12239 continue;
12240 }
12241
25f53a85 12242 stub_entry = ppc_add_stub (stub_name, section, info);
721956f4
AM		 12243 if (stub_entry == NULL)
12244 {
12245 free (stub_name);
6cdc0ccc
AM		 12246 error_ret_free_internal:
12247 if (elf_section_data (section)->relocs == NULL)
12248 free (internal_relocs);
12249 error_ret_free_local:
12250 if (local_syms != NULL
12251 && (symtab_hdr->contents
12252 != (unsigned char *) local_syms))
12253 free (local_syms);
b34976b6 12254 return FALSE;
721956f4
AM		 12255 }
12256
ad8e1ba5 12257 stub_entry->stub_type = stub_type;
794e51c0
AM		 12258 if (stub_type != ppc_stub_plt_call
12259 && stub_type != ppc_stub_plt_call_r2save)
e054468f
AM		 12260 {
12261 stub_entry->target_value = code_value;
12262 stub_entry->target_section = code_sec;
12263 }
12264 else
12265 {
12266 stub_entry->target_value = sym_value;
12267 stub_entry->target_section = sym_sec;
12268 }
721956f4 12269 stub_entry->h = hash;
e054468f 12270 stub_entry->plt_ent = plt_ent;
6911b7dc 12271 stub_entry->other = hash ? hash->elf.other : sym->st_other;
ee75fd95
AM		 12272
12273 if (stub_entry->h != NULL)
12274 htab->stub_globals += 1;
721956f4
AM		 12275 }
12276
12277 /* We're done with the internal relocs, free them. */
6cdc0ccc 12278 if (elf_section_data (section)->relocs != internal_relocs)
1e2f5b6e 12279 free (internal_relocs);
721956f4 12280 }
6cdc0ccc
AM		 12281
12282 if (local_syms != NULL
12283 && symtab_hdr->contents != (unsigned char *) local_syms)
12284 {
12285 if (!info->keep_memory)
12286 free (local_syms);
12287 else
12288 symtab_hdr->contents = (unsigned char *) local_syms;
12289 }
721956f4
AM		 12290 }
12291
5c3dead3 12292 /* We may have added some stubs. Find out the new size of the
721956f4 12293 stub sections. */
e7d1c40c 12294 for (stub_sec = htab->params->stub_bfd->sections;
721956f4
AM		 12295 stub_sec != NULL;
12296 stub_sec = stub_sec->next)
e717da7e 12297 if ((stub_sec->flags & SEC_LINKER_CREATED) == 0)
ee75fd95 12298 {
5c3dead3 12299 stub_sec->rawsize = stub_sec->size;
ee75fd95
AM		 12300 stub_sec->size = 0;
12301 stub_sec->reloc_count = 0;
84f5d08e 12302 stub_sec->flags &= ~SEC_RELOC;
ee75fd95 12303 }
eea6121a
AM		 12304
12305 htab->brlt->size = 0;
84f5d08e
AM		 12306 htab->brlt->reloc_count = 0;
12307 htab->brlt->flags &= ~SEC_RELOC;
ee75fd95 12308 if (htab->relbrlt != NULL)
eea6121a 12309 htab->relbrlt->size = 0;
721956f4 12310
63bc6f6c 12311 bfd_hash_traverse (&htab->stub_hash_table, ppc_size_one_stub, info);
721956f4 12312
176a0d42
AM		 12313 if (info->emitrelocations
12314 && htab->glink != NULL && htab->glink->size != 0)
12315 {
12316 htab->glink->reloc_count = 1;
12317 htab->glink->flags |= SEC_RELOC;
12318 }
12319
58d180e8
AM		 12320 if (htab->glink_eh_frame != NULL
12321 && !bfd_is_abs_section (htab->glink_eh_frame->output_section)
9a2a56cc 12322 && htab->glink_eh_frame->output_section->size != 0)
58d180e8 12323 {
4bbe044a 12324 size_t size = 0, align;
58d180e8 12325
e7d1c40c 12326 for (stub_sec = htab->params->stub_bfd->sections;
58d180e8
AM		 12327 stub_sec != NULL;
12328 stub_sec = stub_sec->next)
12329 if ((stub_sec->flags & SEC_LINKER_CREATED) == 0)
da44f4e5 12330 size += 24;
58d180e8
AM		 12331 if (htab->glink != NULL && htab->glink->size != 0)
12332 size += 24;
12333 if (size != 0)
12334 size += sizeof (glink_eh_frame_cie);
4bbe044a
AM		 12335 align = 1;
12336 align <<= htab->glink_eh_frame->output_section->alignment_power;
12337 align -= 1;
12338 size = (size + align) & ~align;
58d180e8
AM		 12339 htab->glink_eh_frame->rawsize = htab->glink_eh_frame->size;
12340 htab->glink_eh_frame->size = size;
12341 }
12342
e7d1c40c
AM		 12343 if (htab->params->plt_stub_align != 0)
12344 for (stub_sec = htab->params->stub_bfd->sections;
794e51c0
AM		 12345 stub_sec != NULL;
12346 stub_sec = stub_sec->next)
12347 if ((stub_sec->flags & SEC_LINKER_CREATED) == 0)
e7d1c40c
AM		 12348 stub_sec->size = ((stub_sec->size
12349 + (1 << htab->params->plt_stub_align) - 1)
12350 & (-1 << htab->params->plt_stub_align));
794e51c0 12351
e7d1c40c 12352 for (stub_sec = htab->params->stub_bfd->sections;
5c3dead3
AM		 12353 stub_sec != NULL;
12354 stub_sec = stub_sec->next)
12355 if ((stub_sec->flags & SEC_LINKER_CREATED) == 0
12356 && stub_sec->rawsize != stub_sec->size)
12357 break;
12358
12359 /* Exit from this loop when no stubs have been added, and no stubs
12360 have changed size. */
58d180e8
AM		 12361 if (stub_sec == NULL
12362 && (htab->glink_eh_frame == NULL
12363 || htab->glink_eh_frame->rawsize == htab->glink_eh_frame->size))
5c3dead3
AM		 12364 break;
12365
721956f4 12366 /* Ask the linker to do its stuff. */
e7d1c40c 12367 (*htab->params->layout_sections_again) ();
721956f4
AM		 12368 }
12369
da44f4e5
AM		 12370 if (htab->glink_eh_frame != NULL
12371 && htab->glink_eh_frame->size != 0)
12372 {
12373 bfd_vma val;
12374 bfd_byte *p, *last_fde;
12375 size_t last_fde_len, size, align, pad;
12376 asection *stub_sec;
12377
12378 p = bfd_zalloc (htab->glink_eh_frame->owner, htab->glink_eh_frame->size);
12379 if (p == NULL)
12380 return FALSE;
12381 htab->glink_eh_frame->contents = p;
12382 last_fde = p;
12383
12384 memcpy (p, glink_eh_frame_cie, sizeof (glink_eh_frame_cie));
12385 /* CIE length (rewrite in case little-endian). */
12386 last_fde_len = sizeof (glink_eh_frame_cie) - 4;
12387 bfd_put_32 (htab->elf.dynobj, last_fde_len, p);
12388 p += sizeof (glink_eh_frame_cie);
12389
12390 for (stub_sec = htab->params->stub_bfd->sections;
12391 stub_sec != NULL;
12392 stub_sec = stub_sec->next)
12393 if ((stub_sec->flags & SEC_LINKER_CREATED) == 0)
12394 {
12395 last_fde = p;
12396 last_fde_len = 20;
12397 /* FDE length. */
12398 bfd_put_32 (htab->elf.dynobj, 20, p);
12399 p += 4;
12400 /* CIE pointer. */
12401 val = p - htab->glink_eh_frame->contents;
12402 bfd_put_32 (htab->elf.dynobj, val, p);
12403 p += 4;
12404 /* Offset to stub section, written later. */
12405 p += 4;
12406 /* stub section size. */
12407 bfd_put_32 (htab->elf.dynobj, stub_sec->size, p);
12408 p += 4;
12409 /* Augmentation. */
12410 p += 1;
12411 /* Pad. */
12412 p += 7;
12413 }
12414 if (htab->glink != NULL && htab->glink->size != 0)
12415 {
12416 last_fde = p;
12417 last_fde_len = 20;
12418 /* FDE length. */
12419 bfd_put_32 (htab->elf.dynobj, 20, p);
12420 p += 4;
12421 /* CIE pointer. */
12422 val = p - htab->glink_eh_frame->contents;
12423 bfd_put_32 (htab->elf.dynobj, val, p);
12424 p += 4;
12425 /* Offset to .glink, written later. */
12426 p += 4;
12427 /* .glink size. */
12428 bfd_put_32 (htab->elf.dynobj, htab->glink->size - 8, p);
12429 p += 4;
12430 /* Augmentation. */
12431 p += 1;
12432
12433 *p++ = DW_CFA_advance_loc + 1;
12434 *p++ = DW_CFA_register;
12435 *p++ = 65;
12436 *p++ = 12;
12437 *p++ = DW_CFA_advance_loc + 4;
12438 *p++ = DW_CFA_restore_extended;
12439 *p++ = 65;
12440 }
12441 /* Subsume any padding into the last FDE if user .eh_frame
12442 sections are aligned more than glink_eh_frame. Otherwise any
12443 zero padding will be seen as a terminator. */
12444 size = p - htab->glink_eh_frame->contents;
12445 align = 1;
12446 align <<= htab->glink_eh_frame->output_section->alignment_power;
12447 align -= 1;
12448 pad = ((size + align) & ~align) - size;
12449 htab->glink_eh_frame->size = size + pad;
12450 bfd_put_32 (htab->elf.dynobj, last_fde_len + pad, last_fde);
12451 }
12452
d969d15f
AM		 12453 maybe_strip_output (info, htab->brlt);
12454 if (htab->glink_eh_frame != NULL)
12455 maybe_strip_output (info, htab->glink_eh_frame);
721956f4 12456
b34976b6 12457 return TRUE;
721956f4
AM		 12458}
12459
12460/* Called after we have determined section placement. If sections
805fc799 12461 move, we'll be called again. Provide a value for TOCstart. */
721956f4 12462
805fc799 12463bfd_vma
1c865ab2 12464ppc64_elf_set_toc (struct bfd_link_info *info, bfd *obfd)
721956f4 12465{
805fc799
AM		 12466 asection *s;
12467 bfd_vma TOCstart;
721956f4 12468
805fc799
AM		 12469 /* The TOC consists of sections .got, .toc, .tocbss, .plt in that
12470 order. The TOC starts where the first of these sections starts. */
12471 s = bfd_get_section_by_name (obfd, ".got");
e054468f 12472 if (s == NULL || (s->flags & SEC_EXCLUDE) != 0)
805fc799 12473 s = bfd_get_section_by_name (obfd, ".toc");
e054468f 12474 if (s == NULL || (s->flags & SEC_EXCLUDE) != 0)
805fc799 12475 s = bfd_get_section_by_name (obfd, ".tocbss");
e054468f 12476 if (s == NULL || (s->flags & SEC_EXCLUDE) != 0)
805fc799 12477 s = bfd_get_section_by_name (obfd, ".plt");
e054468f 12478 if (s == NULL || (s->flags & SEC_EXCLUDE) != 0)
805fc799
AM		 12479 {
12480 /* This may happen for
12481 o references to TOC base (SYM@toc / TOC[tc0]) without a
12482 .toc directive
12483 o bad linker script
12484 o --gc-sections and empty TOC sections
12485
12486 FIXME: Warn user? */
12487
12488 /* Look for a likely section. We probably won't even be
12489 using TOCstart. */
12490 for (s = obfd->sections; s != NULL; s = s->next)
e054468f
AM		 12491 if ((s->flags & (SEC_ALLOC | SEC_SMALL_DATA | SEC_READONLY
12492 | SEC_EXCLUDE))
805fc799
AM		 12493 == (SEC_ALLOC | SEC_SMALL_DATA))
12494 break;
721956f4 12495 if (s == NULL)
805fc799 12496 for (s = obfd->sections; s != NULL; s = s->next)
e054468f 12497 if ((s->flags & (SEC_ALLOC | SEC_SMALL_DATA | SEC_EXCLUDE))
805fc799
AM		 12498 == (SEC_ALLOC | SEC_SMALL_DATA))
12499 break;
721956f4 12500 if (s == NULL)
805fc799 12501 for (s = obfd->sections; s != NULL; s = s->next)
e054468f
AM		 12502 if ((s->flags & (SEC_ALLOC | SEC_READONLY | SEC_EXCLUDE))
12503 == SEC_ALLOC)
805fc799 12504 break;
721956f4 12505 if (s == NULL)
805fc799 12506 for (s = obfd->sections; s != NULL; s = s->next)
e054468f 12507 if ((s->flags & (SEC_ALLOC | SEC_EXCLUDE)) == SEC_ALLOC)
805fc799
AM		 12508 break;
12509 }
721956f4 12510
805fc799
AM		 12511 TOCstart = 0;
12512 if (s != NULL)
12513 TOCstart = s->output_section->vma + s->output_offset;
721956f4 12514
1c865ab2
AM		 12515 _bfd_set_gp_value (obfd, TOCstart);
12516
810d4e75 12517 if (info != NULL && s != NULL)
1c865ab2
AM		 12518 {
12519 struct ppc_link_hash_table *htab = ppc_hash_table (info);
12520
810d4e75
AM		 12521 if (htab != NULL)
12522 {
12523 if (htab->elf.hgot != NULL)
12524 {
12525 htab->elf.hgot->root.u.def.value = TOC_BASE_OFF;
12526 htab->elf.hgot->root.u.def.section = s;
12527 }
12528 }
12529 else
1c865ab2 12530 {
810d4e75
AM		 12531 struct bfd_link_hash_entry *bh = NULL;
12532 _bfd_generic_link_add_one_symbol (info, obfd, ".TOC.", BSF_GLOBAL,
12533 s, TOC_BASE_OFF, NULL, FALSE,
12534 FALSE, &bh);
1c865ab2
AM		 12535 }
12536 }
805fc799 12537 return TOCstart;
721956f4
AM		 12538}
12539
a345bc8d
AM		 12540/* Called via elf_link_hash_traverse from ppc64_elf_build_stubs to
12541 write out any global entry stubs. */
12542
12543static bfd_boolean
12544build_global_entry_stubs (struct elf_link_hash_entry *h, void *inf)
12545{
12546 struct bfd_link_info *info;
12547 struct ppc_link_hash_table *htab;
12548 struct plt_entry *pent;
12549 asection *s;
12550
12551 if (h->root.type == bfd_link_hash_indirect)
12552 return TRUE;
12553
12554 if (!h->pointer_equality_needed)
12555 return TRUE;
12556
12557 if (h->def_regular)
12558 return TRUE;
12559
12560 info = inf;
12561 htab = ppc_hash_table (info);
12562 if (htab == NULL)
12563 return FALSE;
12564
12565 s = htab->glink;
12566 for (pent = h->plt.plist; pent != NULL; pent = pent->next)
12567 if (pent->plt.offset != (bfd_vma) -1
12568 && pent->addend == 0)
12569 {
12570 bfd_byte *p;
12571 asection *plt;
12572 bfd_vma off;
12573
a345bc8d 12574 p = s->contents + h->root.u.def.value;
33e44f2e 12575 plt = htab->elf.splt;
a345bc8d
AM		 12576 if (!htab->elf.dynamic_sections_created
12577 || h->dynindx == -1)
33e44f2e 12578 plt = htab->elf.iplt;
a345bc8d
AM		 12579 off = pent->plt.offset + plt->output_offset + plt->output_section->vma;
12580 off -= h->root.u.def.value + s->output_offset + s->output_section->vma;
12581
12582 if (off + 0x80008000 > 0xffffffff || (off & 3) != 0)
12583 {
12584 info->callbacks->einfo
12585 (_("%P: linkage table error against `%T'\n"),
12586 h->root.root.string);
12587 bfd_set_error (bfd_error_bad_value);
12588 htab->stub_error = TRUE;
12589 }
12590
7341d5e2
AM		 12591 htab->stub_count[ppc_stub_global_entry - 1] += 1;
12592 if (htab->params->emit_stub_syms)
12593 {
12594 size_t len = strlen (h->root.root.string);
12595 char *name = bfd_malloc (sizeof "12345678.global_entry." + len);
12596
12597 if (name == NULL)
12598 return FALSE;
12599
12600 sprintf (name, "%08x.global_entry.%s", s->id, h->root.root.string);
12601 h = elf_link_hash_lookup (&htab->elf, name, TRUE, FALSE, FALSE);
12602 if (h == NULL)
12603 return FALSE;
12604 if (h->root.type == bfd_link_hash_new)
12605 {
12606 h->root.type = bfd_link_hash_defined;
12607 h->root.u.def.section = s;
12608 h->root.u.def.value = p - s->contents;
12609 h->ref_regular = 1;
12610 h->def_regular = 1;
12611 h->ref_regular_nonweak = 1;
12612 h->forced_local = 1;
12613 h->non_elf = 0;
12614 }
12615 }
12616
a345bc8d
AM		 12617 if (PPC_HA (off) != 0)
12618 {
12619 bfd_put_32 (s->owner, ADDIS_R12_R12 | PPC_HA (off), p);
12620 p += 4;
12621 }
12622 bfd_put_32 (s->owner, LD_R12_0R12 | PPC_LO (off), p);
12623 p += 4;
12624 bfd_put_32 (s->owner, MTCTR_R12, p);
12625 p += 4;
12626 bfd_put_32 (s->owner, BCTR, p);
12627 break;
12628 }
12629 return TRUE;
12630}
12631
721956f4
AM		 12632/* Build all the stubs associated with the current output file.
12633 The stubs are kept in a hash table attached to the main linker
12634 hash table. This function is called via gldelf64ppc_finish. */
12635
b34976b6 12636bfd_boolean
e7d1c40c 12637ppc64_elf_build_stubs (struct bfd_link_info *info,
4ce794b7 12638 char **stats)
5d1634d7
AM		 12639{
12640 struct ppc_link_hash_table *htab = ppc_hash_table (info);
721956f4 12641 asection *stub_sec;
5d1634d7 12642 bfd_byte *p;
e717da7e 12643 int stub_sec_count = 0;
5d1634d7 12644
4dfe6ac6
NC		 12645 if (htab == NULL)
12646 return FALSE;
12647
eea6121a 12648 /* Allocate memory to hold the linker stubs. */
e7d1c40c 12649 for (stub_sec = htab->params->stub_bfd->sections;
721956f4
AM		 12650 stub_sec != NULL;
12651 stub_sec = stub_sec->next)
eea6121a
AM		 12652 if ((stub_sec->flags & SEC_LINKER_CREATED) == 0
12653 && stub_sec->size != 0)
e717da7e 12654 {
e7d1c40c 12655 stub_sec->contents = bfd_zalloc (htab->params->stub_bfd, stub_sec->size);
eea6121a
AM		 12656 if (stub_sec->contents == NULL)
12657 return FALSE;
12658 /* We want to check that built size is the same as calculated
12659 size. rawsize is a convenient location to use. */
12660 stub_sec->rawsize = stub_sec->size;
12661 stub_sec->size = 0;
e717da7e 12662 }
5d1634d7 12663
23eb7e01 12664 if (htab->glink != NULL && htab->glink->size != 0)
5d1634d7 12665 {
9f951329 12666 unsigned int indx;
ad8e1ba5 12667 bfd_vma plt0;
9f951329 12668
721956f4 12669 /* Build the .glink plt call stub. */
e7d1c40c 12670 if (htab->params->emit_stub_syms)
97b639ba
AM		 12671 {
12672 struct elf_link_hash_entry *h;
468392fb
AM		 12673 h = elf_link_hash_lookup (&htab->elf, "__glink_PLTresolve",
12674 TRUE, FALSE, FALSE);
97b639ba
AM		 12675 if (h == NULL)
12676 return FALSE;
12677 if (h->root.type == bfd_link_hash_new)
12678 {
12679 h->root.type = bfd_link_hash_defined;
12680 h->root.u.def.section = htab->glink;
ee4bf8d2 12681 h->root.u.def.value = 8;
f5385ebf
AM		 12682 h->ref_regular = 1;
12683 h->def_regular = 1;
12684 h->ref_regular_nonweak = 1;
12685 h->forced_local = 1;
12686 h->non_elf = 0;
97b639ba
AM		 12687 }
12688 }
33e44f2e
AM		 12689 plt0 = (htab->elf.splt->output_section->vma
12690 + htab->elf.splt->output_offset
12691 - 16);
176a0d42
AM		 12692 if (info->emitrelocations)
12693 {
12694 Elf_Internal_Rela *r = get_relocs (htab->glink, 1);
12695 if (r == NULL)
12696 return FALSE;
12697 r->r_offset = (htab->glink->output_offset
12698 + htab->glink->output_section->vma);
12699 r->r_info = ELF64_R_INFO (0, R_PPC64_REL64);
12700 r->r_addend = plt0;
12701 }
4ce794b7 12702 p = htab->glink->contents;
176a0d42 12703 plt0 -= htab->glink->output_section->vma + htab->glink->output_offset;
ee4bf8d2
AM		 12704 bfd_put_64 (htab->glink->owner, plt0, p);
12705 p += 8;
b9e5796b
AM		 12706 if (htab->opd_abi)
12707 {
12708 bfd_put_32 (htab->glink->owner, MFLR_R12, p);
12709 p += 4;
12710 bfd_put_32 (htab->glink->owner, BCL_20_31, p);
12711 p += 4;
12712 bfd_put_32 (htab->glink->owner, MFLR_R11, p);
12713 p += 4;
12714 bfd_put_32 (htab->glink->owner, LD_R2_0R11 | (-16 & 0xfffc), p);
12715 p += 4;
12716 bfd_put_32 (htab->glink->owner, MTLR_R12, p);
12717 p += 4;
12718 bfd_put_32 (htab->glink->owner, ADD_R11_R2_R11, p);
12719 p += 4;
12720 bfd_put_32 (htab->glink->owner, LD_R12_0R11, p);
12721 p += 4;
12722 bfd_put_32 (htab->glink->owner, LD_R2_0R11 | 8, p);
12723 p += 4;
12724 bfd_put_32 (htab->glink->owner, MTCTR_R12, p);
12725 p += 4;
12726 bfd_put_32 (htab->glink->owner, LD_R11_0R11 | 16, p);
12727 p += 4;
12728 }
12729 else
12730 {
12731 bfd_put_32 (htab->glink->owner, MFLR_R0, p);
12732 p += 4;
12733 bfd_put_32 (htab->glink->owner, BCL_20_31, p);
12734 p += 4;
12735 bfd_put_32 (htab->glink->owner, MFLR_R11, p);
12736 p += 4;
12737 bfd_put_32 (htab->glink->owner, LD_R2_0R11 | (-16 & 0xfffc), p);
12738 p += 4;
12739 bfd_put_32 (htab->glink->owner, MTLR_R0, p);
12740 p += 4;
12741 bfd_put_32 (htab->glink->owner, SUB_R12_R12_R11, p);
12742 p += 4;
12743 bfd_put_32 (htab->glink->owner, ADD_R11_R2_R11, p);
12744 p += 4;
12745 bfd_put_32 (htab->glink->owner, ADDI_R0_R12 | (-48 & 0xffff), p);
12746 p += 4;
12747 bfd_put_32 (htab->glink->owner, LD_R12_0R11, p);
12748 p += 4;
12749 bfd_put_32 (htab->glink->owner, SRDI_R0_R0_2, p);
12750 p += 4;
12751 bfd_put_32 (htab->glink->owner, MTCTR_R12, p);
12752 p += 4;
12753 bfd_put_32 (htab->glink->owner, LD_R11_0R11 | 8, p);
12754 p += 4;
12755 }
4ce794b7 12756 bfd_put_32 (htab->glink->owner, BCTR, p);
ad8e1ba5 12757 p += 4;
ee4bf8d2
AM		 12758 while (p - htab->glink->contents < GLINK_CALL_STUB_SIZE)
12759 {
12760 bfd_put_32 (htab->glink->owner, NOP, p);
12761 p += 4;
12762 }
ad8e1ba5 12763
9f951329
AM		 12764 /* Build the .glink lazy link call stubs. */
12765 indx = 0;
a345bc8d 12766 while (p < htab->glink->contents + htab->glink->rawsize)
9f951329 12767 {
b9e5796b 12768 if (htab->opd_abi)
9f951329 12769 {
b9e5796b
AM		 12770 if (indx < 0x8000)
12771 {
12772 bfd_put_32 (htab->glink->owner, LI_R0_0 | indx, p);
12773 p += 4;
12774 }
12775 else
12776 {
12777 bfd_put_32 (htab->glink->owner, LIS_R0_0 | PPC_HI (indx), p);
12778 p += 4;
12779 bfd_put_32 (htab->glink->owner, ORI_R0_R0_0 | PPC_LO (indx),
12780 p);
12781 p += 4;
12782 }
9f951329 12783 }
4ce794b7 12784 bfd_put_32 (htab->glink->owner,
ee4bf8d2 12785 B_DOT | ((htab->glink->contents - p + 8) & 0x3fffffc), p);
a16d5acb 12786 indx++;
9f951329
AM		 12787 p += 4;
12788 }
a345bc8d
AM		 12789
12790 /* Build .glink global entry stubs. */
12791 if (htab->glink->size > htab->glink->rawsize)
afe397ea 12792 elf_link_hash_traverse (&htab->elf, build_global_entry_stubs, info);
5d1634d7 12793 }
5d1634d7 12794
7341d5e2 12795 if (htab->brlt != NULL && htab->brlt->size != 0)
721956f4 12796 {
4ce794b7 12797 htab->brlt->contents = bfd_zalloc (htab->brlt->owner,
eea6121a 12798 htab->brlt->size);
4ce794b7 12799 if (htab->brlt->contents == NULL)
b34976b6 12800 return FALSE;
721956f4 12801 }
ee75fd95 12802 if (htab->relbrlt != NULL && htab->relbrlt->size != 0)
63bc6f6c
AM		 12803 {
12804 htab->relbrlt->contents = bfd_zalloc (htab->relbrlt->owner,
eea6121a 12805 htab->relbrlt->size);
63bc6f6c
AM		 12806 if (htab->relbrlt->contents == NULL)
12807 return FALSE;
12808 }
5d1634d7 12809
721956f4
AM		 12810 /* Build the stubs as directed by the stub hash table. */
12811 bfd_hash_traverse (&htab->stub_hash_table, ppc_build_one_stub, info);
5d1634d7 12812
aa8a7074
AM		 12813 if (htab->relbrlt != NULL)
12814 htab->relbrlt->reloc_count = 0;
12815
e7d1c40c
AM		 12816 if (htab->params->plt_stub_align != 0)
12817 for (stub_sec = htab->params->stub_bfd->sections;
794e51c0
AM		 12818 stub_sec != NULL;
12819 stub_sec = stub_sec->next)
12820 if ((stub_sec->flags & SEC_LINKER_CREATED) == 0)
e7d1c40c
AM		 12821 stub_sec->size = ((stub_sec->size
12822 + (1 << htab->params->plt_stub_align) - 1)
12823 & (-1 << htab->params->plt_stub_align));
794e51c0 12824
e7d1c40c 12825 for (stub_sec = htab->params->stub_bfd->sections;
721956f4
AM		 12826 stub_sec != NULL;
12827 stub_sec = stub_sec->next)
e717da7e
AM		 12828 if ((stub_sec->flags & SEC_LINKER_CREATED) == 0)
12829 {
12830 stub_sec_count += 1;
eea6121a 12831 if (stub_sec->rawsize != stub_sec->size)
e717da7e
AM		 12832 break;
12833 }
5d1634d7 12834
da44f4e5
AM		 12835 /* Note that the glink_eh_frame check here is not only testing that
12836 the generated size matched the calculated size but also that
12837 bfd_elf_discard_info didn't make any changes to the section. */
721956f4 12838 if (stub_sec != NULL
58d180e8
AM		 12839 || (htab->glink_eh_frame != NULL
12840 && htab->glink_eh_frame->rawsize != htab->glink_eh_frame->size))
5d1634d7 12841 {
b34976b6 12842 htab->stub_error = TRUE;
8de848d8 12843 info->callbacks->einfo (_("%P: stubs don't match calculated size\n"));
5d1634d7 12844 }
721956f4 12845
d2a300cf
AM		 12846 if (htab->stub_error)
12847 return FALSE;
12848
12849 if (stats != NULL)
12850 {
12851 *stats = bfd_malloc (500);
12852 if (*stats == NULL)
12853 return FALSE;
12854
ee75fd95 12855 sprintf (*stats, _("linker stubs in %u group%s\n"
d2a300cf
AM		 12856 " branch %lu\n"
12857 " toc adjust %lu\n"
12858 " long branch %lu\n"
12859 " long toc adj %lu\n"
794e51c0 12860 " plt call %lu\n"
7341d5e2
AM		 12861 " plt call toc %lu\n"
12862 " global entry %lu"),
e717da7e 12863 stub_sec_count,
ee75fd95 12864 stub_sec_count == 1 ? "" : "s",
4ce794b7
AM		 12865 htab->stub_count[ppc_stub_long_branch - 1],
12866 htab->stub_count[ppc_stub_long_branch_r2off - 1],
12867 htab->stub_count[ppc_stub_plt_branch - 1],
12868 htab->stub_count[ppc_stub_plt_branch_r2off - 1],
794e51c0 12869 htab->stub_count[ppc_stub_plt_call - 1],
7341d5e2
AM		 12870 htab->stub_count[ppc_stub_plt_call_r2save - 1],
12871 htab->stub_count[ppc_stub_global_entry - 1]);
d2a300cf
AM		 12872 }
12873 return TRUE;
5bd4f169
AM		 12874}
12875
99877b66
AM		 12876/* This function undoes the changes made by add_symbol_adjust. */
12877
12878static bfd_boolean
12879undo_symbol_twiddle (struct elf_link_hash_entry *h, void *inf ATTRIBUTE_UNUSED)
12880{
12881 struct ppc_link_hash_entry *eh;
12882
12883 if (h->root.type == bfd_link_hash_indirect)
12884 return TRUE;
12885
99877b66
AM		 12886 eh = (struct ppc_link_hash_entry *) h;
12887 if (eh->elf.root.type != bfd_link_hash_undefweak || !eh->was_undefined)
12888 return TRUE;
12889
12890 eh->elf.root.type = bfd_link_hash_undefined;
12891 return TRUE;
12892}
12893
12894void
12895ppc64_elf_restore_symbols (struct bfd_link_info *info)
12896{
12897 struct ppc_link_hash_table *htab = ppc_hash_table (info);
4dfe6ac6
NC		 12898
12899 if (htab != NULL)
12900 elf_link_hash_traverse (&htab->elf, undo_symbol_twiddle, info);
99877b66
AM		 12901}
12902
60124e18
AM		 12903/* What to do when ld finds relocations against symbols defined in
12904 discarded sections. */
12905
12906static unsigned int
12907ppc64_elf_action_discarded (asection *sec)
12908{
12909 if (strcmp (".opd", sec->name) == 0)
12910 return 0;
12911
12912 if (strcmp (".toc", sec->name) == 0)
12913 return 0;
12914
bce50a28
JJ		 12915 if (strcmp (".toc1", sec->name) == 0)
12916 return 0;
12917
60124e18
AM		 12918 return _bfd_elf_default_action_discarded (sec);
12919}
12920
5bd4f169
AM		 12921/* The RELOCATE_SECTION function is called by the ELF backend linker
12922 to handle the relocations for a section.
12923
12924 The relocs are always passed as Rela structures; if the section
12925 actually uses Rel structures, the r_addend field will always be
12926 zero.
12927
12928 This function is responsible for adjust the section contents as
12929 necessary, and (if using Rela relocs and generating a
1049f94e 12930 relocatable output file) adjusting the reloc addend as
5bd4f169
AM		 12931 necessary.
12932
12933 This function does not have to worry about setting the reloc
12934 address or the reloc symbol index.
12935
12936 LOCAL_SYMS is a pointer to the swapped in local symbols.
12937
12938 LOCAL_SECTIONS is an array giving the section in the input file
12939 corresponding to the st_shndx field of each local symbol.
12940
12941 The global hash table entry for the global symbols can be found
12942 via elf_sym_hashes (input_bfd).
12943
1049f94e 12944 When generating relocatable output, this function must handle
5bd4f169
AM		 12945 STB_LOCAL/STT_SECTION symbols specially. The output symbol is
12946 going to be the section symbol corresponding to the output
12947 section, which means that the addend must be adjusted
12948 accordingly. */
12949
b34976b6 12950static bfd_boolean
4ce794b7
AM		 12951ppc64_elf_relocate_section (bfd *output_bfd,
12952 struct bfd_link_info *info,
12953 bfd *input_bfd,
12954 asection *input_section,
12955 bfd_byte *contents,
12956 Elf_Internal_Rela *relocs,
12957 Elf_Internal_Sym *local_syms,
12958 asection **local_sections)
5bd4f169 12959{
65f38f15 12960 struct ppc_link_hash_table *htab;
5bd4f169
AM		 12961 Elf_Internal_Shdr *symtab_hdr;
12962 struct elf_link_hash_entry **sym_hashes;
5bd4f169
AM		 12963 Elf_Internal_Rela *rel;
12964 Elf_Internal_Rela *relend;
411e1bfb
AM		 12965 Elf_Internal_Rela outrel;
12966 bfd_byte *loc;
411e1bfb 12967 struct got_entry **local_got_ents;
5bd4f169 12968 bfd_vma TOCstart;
b34976b6
AM		 12969 bfd_boolean ret = TRUE;
12970 bfd_boolean is_opd;
794e51c0
AM		 12971 /* Assume 'at' branch hints. */
12972 bfd_boolean is_isa_v2 = TRUE;
4fe5ca5b 12973 bfd_vma d_offset = (bfd_big_endian (output_bfd) ? 2 : 0);
5bd4f169 12974
65f38f15 12975 /* Initialize howto table if needed. */
5bd4f169 12976 if (!ppc64_elf_howto_table[R_PPC64_ADDR32])
5bd4f169
AM		 12977 ppc_howto_init ();
12978
65f38f15 12979 htab = ppc_hash_table (info);
4dfe6ac6
NC		 12980 if (htab == NULL)
12981 return FALSE;
ee75fd95
AM		 12982
12983 /* Don't relocate stub sections. */
e7d1c40c 12984 if (input_section->owner == htab->params->stub_bfd)
ee75fd95
AM		 12985 return TRUE;
12986
0c8d6e5c 12987 BFD_ASSERT (is_ppc64_elf (input_bfd));
0ffa91dd 12988
411e1bfb 12989 local_got_ents = elf_local_got_ents (input_bfd);
5bd4f169 12990 TOCstart = elf_gp (output_bfd);
0ffa91dd 12991 symtab_hdr = &elf_symtab_hdr (input_bfd);
5bd4f169 12992 sym_hashes = elf_sym_hashes (input_bfd);
7c8fe5c4 12993 is_opd = ppc64_elf_section_data (input_section)->sec_type == sec_opd;
65f38f15 12994
5bd4f169
AM		 12995 rel = relocs;
12996 relend = relocs + input_section->reloc_count;
12997 for (; rel < relend; rel++)
12998 {
04c9666a 12999 enum elf_ppc64_reloc_type r_type;
31c76678 13000 bfd_vma addend;
5bd4f169
AM		 13001 bfd_reloc_status_type r;
13002 Elf_Internal_Sym *sym;
13003 asection *sec;
039b3fef
AM		 13004 struct elf_link_hash_entry *h_elf;
13005 struct ppc_link_hash_entry *h;
13006 struct ppc_link_hash_entry *fdh;
5bd4f169 13007 const char *sym_name;
0d4792f7 13008 unsigned long r_symndx, toc_symndx;
3a71aa26 13009 bfd_vma toc_addend;
f961d9dd
AM		 13010 unsigned char tls_mask, tls_gd, tls_type;
13011 unsigned char sym_type;
5bd4f169 13012 bfd_vma relocation;
b34976b6
AM		 13013 bfd_boolean unresolved_reloc;
13014 bfd_boolean warned;
bc30df16 13015 enum { DEST_NORMAL, DEST_OPD, DEST_STUB } reloc_dest;
67f0cbdb 13016 unsigned int insn;
e11840f9 13017 unsigned int mask;
721956f4
AM		 13018 struct ppc_stub_hash_entry *stub_entry;
13019 bfd_vma max_br_offset;
13020 bfd_vma from;
31c76678 13021 const Elf_Internal_Rela orig_rel = *rel;
b80eed39
AM		 13022 reloc_howto_type *howto;
13023 struct reloc_howto_struct alt_howto;
5bd4f169 13024
4ce794b7 13025 r_type = ELF64_R_TYPE (rel->r_info);
5bd4f169 13026 r_symndx = ELF64_R_SYM (rel->r_info);
ee87f2da
AM		 13027
13028 /* For old style R_PPC64_TOC relocs with a zero symbol, use the
13029 symbol of the previous ADDR64 reloc. The symbol gives us the
13030 proper TOC base to use. */
13031 if (rel->r_info == ELF64_R_INFO (0, R_PPC64_TOC)
13032 && rel != relocs
13033 && ELF64_R_TYPE (rel[-1].r_info) == R_PPC64_ADDR64
13034 && is_opd)
13035 r_symndx = ELF64_R_SYM (rel[-1].r_info);
13036
4ce794b7
AM		 13037 sym = NULL;
13038 sec = NULL;
039b3fef 13039 h_elf = NULL;
4ce794b7 13040 sym_name = NULL;
b34976b6
AM		 13041 unresolved_reloc = FALSE;
13042 warned = FALSE;
65f38f15 13043
0b13192e 13044 if (r_symndx < symtab_hdr->sh_info)
5bd4f169
AM		 13045 {
13046 /* It's a local symbol. */
74f0fb50 13047 struct _opd_sec_data *opd;
4025353c 13048
5bd4f169
AM		 13049 sym = local_syms + r_symndx;
13050 sec = local_sections[r_symndx];
26c61ae5 13051 sym_name = bfd_elf_sym_name (input_bfd, symtab_hdr, sym, sec);
0d4792f7 13052 sym_type = ELF64_ST_TYPE (sym->st_info);
8517fae7 13053 relocation = _bfd_elf_rela_local_sym (output_bfd, sym, &sec, rel);
74f0fb50
AM		 13054 opd = get_opd_info (sec);
13055 if (opd != NULL && opd->adjust != NULL)
1e2f5b6e 13056 {
74f0fb50 13057 long adjust = opd->adjust[(sym->st_value + rel->r_addend) / 8];
4025353c
AM		 13058 if (adjust == -1)
13059 relocation = 0;
13060 else
4cc603a5
AM		 13061 {
13062 /* If this is a relocation against the opd section sym
13063 and we have edited .opd, adjust the reloc addend so
13064 that ld -r and ld --emit-relocs output is correct.
13065 If it is a reloc against some other .opd symbol,
13066 then the symbol value will be adjusted later. */
13067 if (ELF_ST_TYPE (sym->st_info) == STT_SECTION)
13068 rel->r_addend += adjust;
13069 else
13070 relocation += adjust;
13071 }
1e2f5b6e 13072 }
5bd4f169
AM		 13073 }
13074 else
13075 {
62d887d4
L		 13076 bfd_boolean ignored;
13077
b2a8e766
AM		 13078 RELOC_FOR_GLOBAL_SYMBOL (info, input_bfd, input_section, rel,
13079 r_symndx, symtab_hdr, sym_hashes,
039b3fef 13080 h_elf, sec, relocation,
62d887d4 13081 unresolved_reloc, warned, ignored);
039b3fef
AM		 13082 sym_name = h_elf->root.root.string;
13083 sym_type = h_elf->type;
b69fdb4e
AM		 13084 if (sec != NULL
13085 && sec->owner == output_bfd
13086 && strcmp (sec->name, ".opd") == 0)
13087 {
13088 /* This is a symbol defined in a linker script. All
13089 such are defined in output sections, even those
13090 defined by simple assignment from a symbol defined in
13091 an input section. Transfer the symbol to an
13092 appropriate input .opd section, so that a branch to
13093 this symbol will be mapped to the location specified
13094 by the opd entry. */
13095 struct bfd_link_order *lo;
13096 for (lo = sec->map_head.link_order; lo != NULL; lo = lo->next)
13097 if (lo->type == bfd_indirect_link_order)
13098 {
13099 asection *isec = lo->u.indirect.section;
13100 if (h_elf->root.u.def.value >= isec->output_offset
13101 && h_elf->root.u.def.value < (isec->output_offset
13102 + isec->size))
13103 {
13104 h_elf->root.u.def.value -= isec->output_offset;
13105 h_elf->root.u.def.section = isec;
13106 sec = isec;
13107 break;
13108 }
13109 }
13110 }
5bd4f169 13111 }
039b3fef 13112 h = (struct ppc_link_hash_entry *) h_elf;
5bd4f169 13113
dbaa2011 13114 if (sec != NULL && discarded_section (sec))
e4067dbb 13115 RELOC_AGAINST_DISCARDED_SECTION (info, input_bfd, input_section,
545fd46b
MR		 13116 rel, 1, relend,
13117 ppc64_elf_howto_table[r_type], 0,
e4067dbb 13118 contents);
ab96bf03
AM		 13119
13120 if (info->relocatable)
13121 continue;
13122
f40da81b
AM		 13123 if (h != NULL && &h->elf == htab->elf.hgot)
13124 {
13125 relocation = (TOCstart
13126 + htab->stub_group[input_section->id].toc_off);
13127 sec = bfd_abs_section_ptr;
13128 unresolved_reloc = FALSE;
13129 }
13130
951fd09b
AM		 13131 /* TLS optimizations. Replace instruction sequences and relocs
13132 based on information we collected in tls_optimize. We edit
13133 RELOCS so that --emit-relocs will output something sensible
13134 for the final instruction stream. */
13135 tls_mask = 0;
13136 tls_gd = 0;
0d4792f7 13137 toc_symndx = 0;
727fc41e
AM		 13138 if (h != NULL)
13139 tls_mask = h->tls_mask;
13140 else if (local_got_ents != NULL)
411e1bfb 13141 {
e054468f
AM		 13142 struct plt_entry **local_plt = (struct plt_entry **)
13143 (local_got_ents + symtab_hdr->sh_info);
f961d9dd 13144 unsigned char *lgot_masks = (unsigned char *)
e054468f 13145 (local_plt + symtab_hdr->sh_info);
727fc41e
AM		 13146 tls_mask = lgot_masks[r_symndx];
13147 }
13148 if (tls_mask == 0
13149 && (r_type == R_PPC64_TLS
13150 || r_type == R_PPC64_TLSGD
13151 || r_type == R_PPC64_TLSLD))
13152 {
13153 /* Check for toc tls entries. */
f961d9dd 13154 unsigned char *toc_tls;
0d4792f7 13155
727fc41e
AM		 13156 if (!get_tls_mask (&toc_tls, &toc_symndx, &toc_addend,
13157 &local_syms, rel, input_bfd))
13158 return FALSE;
0d4792f7 13159
727fc41e
AM		 13160 if (toc_tls)
13161 tls_mask = *toc_tls;
0d4792f7
AM		 13162 }
13163
13164 /* Check that tls relocs are used with tls syms, and non-tls
13165 relocs are used with non-tls syms. */
cf35638d 13166 if (r_symndx != STN_UNDEF
0d4792f7
AM		 13167 && r_type != R_PPC64_NONE
13168 && (h == NULL
039b3fef
AM		 13169 || h->elf.root.type == bfd_link_hash_defined
13170 || h->elf.root.type == bfd_link_hash_defweak)
1d483afe
AM		 13171 && (IS_PPC64_TLS_RELOC (r_type)
13172 != (sym_type == STT_TLS
13173 || (sym_type == STT_SECTION
13174 && (sec->flags & SEC_THREAD_LOCAL) != 0))))
0d4792f7 13175 {
727fc41e
AM		 13176 if (tls_mask != 0
13177 && (r_type == R_PPC64_TLS
13178 || r_type == R_PPC64_TLSGD
13179 || r_type == R_PPC64_TLSLD))
0d4792f7
AM		 13180 /* R_PPC64_TLS is OK against a symbol in the TOC. */
13181 ;
13182 else
25f53a85 13183 info->callbacks->einfo
1d483afe 13184 (!IS_PPC64_TLS_RELOC (r_type)
bc30df16
AM		 13185 ? _("%P: %H: %s used with TLS symbol `%T'\n")
13186 : _("%P: %H: %s used with non-TLS symbol `%T'\n"),
25f53a85 13187 input_bfd, input_section, rel->r_offset,
0d4792f7
AM		 13188 ppc64_elf_howto_table[r_type]->name,
13189 sym_name);
411e1bfb
AM		 13190 }
13191
13192 /* Ensure reloc mapping code below stays sane. */
13193 if (R_PPC64_TOC16_LO_DS != R_PPC64_TOC16_DS + 1
13194 || R_PPC64_TOC16_LO != R_PPC64_TOC16 + 1
13195 || (R_PPC64_GOT_TLSLD16 & 3) != (R_PPC64_GOT_TLSGD16 & 3)
13196 || (R_PPC64_GOT_TLSLD16_LO & 3) != (R_PPC64_GOT_TLSGD16_LO & 3)
13197 || (R_PPC64_GOT_TLSLD16_HI & 3) != (R_PPC64_GOT_TLSGD16_HI & 3)
13198 || (R_PPC64_GOT_TLSLD16_HA & 3) != (R_PPC64_GOT_TLSGD16_HA & 3)
13199 || (R_PPC64_GOT_TLSLD16 & 3) != (R_PPC64_GOT_TPREL16_DS & 3)
13200 || (R_PPC64_GOT_TLSLD16_LO & 3) != (R_PPC64_GOT_TPREL16_LO_DS & 3)
13201 || (R_PPC64_GOT_TLSLD16_HI & 3) != (R_PPC64_GOT_TPREL16_HI & 3)
13202 || (R_PPC64_GOT_TLSLD16_HA & 3) != (R_PPC64_GOT_TPREL16_HA & 3))
13203 abort ();
0d4792f7 13204
411e1bfb
AM		 13205 switch (r_type)
13206 {
13207 default:
411e1bfb
AM		 13208 break;
13209
ba761f19
AM		 13210 case R_PPC64_LO_DS_OPT:
13211 insn = bfd_get_32 (output_bfd, contents + rel->r_offset - d_offset);
13212 if ((insn & (0x3f << 26)) != 58u << 26)
13213 abort ();
13214 insn += (14u << 26) - (58u << 26);
13215 bfd_put_32 (output_bfd, insn, contents + rel->r_offset - d_offset);
13216 r_type = R_PPC64_TOC16_LO;
13217 rel->r_info = ELF64_R_INFO (r_symndx, r_type);
13218 break;
13219
411e1bfb
AM		 13220 case R_PPC64_TOC16:
13221 case R_PPC64_TOC16_LO:
13222 case R_PPC64_TOC16_DS:
13223 case R_PPC64_TOC16_LO_DS:
411e1bfb
AM		 13224 {
13225 /* Check for toc tls entries. */
f961d9dd 13226 unsigned char *toc_tls;
951fd09b 13227 int retval;
411e1bfb 13228
3a71aa26
AM		 13229 retval = get_tls_mask (&toc_tls, &toc_symndx, &toc_addend,
13230 &local_syms, rel, input_bfd);
951fd09b 13231 if (retval == 0)
411e1bfb
AM		 13232 return FALSE;
13233
13234 if (toc_tls)
13235 {
951fd09b 13236 tls_mask = *toc_tls;
411e1bfb
AM		 13237 if (r_type == R_PPC64_TOC16_DS
13238 || r_type == R_PPC64_TOC16_LO_DS)
81407a69
AM		 13239 {
13240 if (tls_mask != 0
13241 && (tls_mask & (TLS_DTPREL | TLS_TPREL)) == 0)
13242 goto toctprel;
13243 }
411e1bfb 13244 else
951fd09b
AM		 13245 {
13246 /* If we found a GD reloc pair, then we might be
13247 doing a GD->IE transition. */
13248 if (retval == 2)
13249 {
13250 tls_gd = TLS_TPRELGD;
13251 if (tls_mask != 0 && (tls_mask & TLS_GD) == 0)
102890f0 13252 goto tls_ldgd_opt;
951fd09b
AM		 13253 }
13254 else if (retval == 3)
13255 {
13256 if (tls_mask != 0 && (tls_mask & TLS_LD) == 0)
102890f0 13257 goto tls_ldgd_opt;
951fd09b
AM		 13258 }
13259 }
411e1bfb
AM		 13260 }
13261 }
13262 break;
13263
9d6ded02
AM		 13264 case R_PPC64_GOT_TPREL16_HI:
13265 case R_PPC64_GOT_TPREL16_HA:
13266 if (tls_mask != 0
13267 && (tls_mask & TLS_TPREL) == 0)
13268 {
13269 rel->r_offset -= d_offset;
13270 bfd_put_32 (output_bfd, NOP, contents + rel->r_offset);
13271 r_type = R_PPC64_NONE;
13272 rel->r_info = ELF64_R_INFO (r_symndx, r_type);
13273 }
13274 break;
13275
411e1bfb
AM		 13276 case R_PPC64_GOT_TPREL16_DS:
13277 case R_PPC64_GOT_TPREL16_LO_DS:
951fd09b
AM		 13278 if (tls_mask != 0
13279 && (tls_mask & TLS_TPREL) == 0)
411e1bfb 13280 {
81407a69 13281 toctprel:
4fe5ca5b 13282 insn = bfd_get_32 (output_bfd, contents + rel->r_offset - d_offset);
411e1bfb
AM		 13283 insn &= 31 << 21;
13284 insn |= 0x3c0d0000; /* addis 0,13,0 */
4fe5ca5b 13285 bfd_put_32 (output_bfd, insn, contents + rel->r_offset - d_offset);
411e1bfb 13286 r_type = R_PPC64_TPREL16_HA;
0d4792f7
AM		 13287 if (toc_symndx != 0)
13288 {
13289 rel->r_info = ELF64_R_INFO (toc_symndx, r_type);
3a71aa26 13290 rel->r_addend = toc_addend;
0d4792f7
AM		 13291 /* We changed the symbol. Start over in order to
13292 get h, sym, sec etc. right. */
13293 rel--;
13294 continue;
13295 }
13296 else
13297 rel->r_info = ELF64_R_INFO (r_symndx, r_type);
411e1bfb
AM		 13298 }
13299 break;
13300
13301 case R_PPC64_TLS:
951fd09b
AM		 13302 if (tls_mask != 0
13303 && (tls_mask & TLS_TPREL) == 0)
411e1bfb 13304 {
411e1bfb 13305 insn = bfd_get_32 (output_bfd, contents + rel->r_offset);
2d0f3896
AM		 13306 insn = _bfd_elf_ppc_at_tls_transform (insn, 13);
13307 if (insn == 0)
411e1bfb 13308 abort ();
411e1bfb 13309 bfd_put_32 (output_bfd, insn, contents + rel->r_offset);
411e1bfb 13310 /* Was PPC64_TLS which sits on insn boundary, now
4fe5ca5b
GM		 13311 PPC64_TPREL16_LO which is at low-order half-word. */
13312 rel->r_offset += d_offset;
0d4792f7
AM		 13313 r_type = R_PPC64_TPREL16_LO;
13314 if (toc_symndx != 0)
13315 {
13316 rel->r_info = ELF64_R_INFO (toc_symndx, r_type);
3a71aa26 13317 rel->r_addend = toc_addend;
0d4792f7
AM		 13318 /* We changed the symbol. Start over in order to
13319 get h, sym, sec etc. right. */
13320 rel--;
13321 continue;
13322 }
13323 else
13324 rel->r_info = ELF64_R_INFO (r_symndx, r_type);
411e1bfb
AM		 13325 }
13326 break;
13327
411e1bfb
AM		 13328 case R_PPC64_GOT_TLSGD16_HI:
13329 case R_PPC64_GOT_TLSGD16_HA:
951fd09b
AM		 13330 tls_gd = TLS_TPRELGD;
13331 if (tls_mask != 0 && (tls_mask & TLS_GD) == 0)
13332 goto tls_gdld_hi;
13333 break;
13334
411e1bfb
AM		 13335 case R_PPC64_GOT_TLSLD16_HI:
13336 case R_PPC64_GOT_TLSLD16_HA:
951fd09b 13337 if (tls_mask != 0 && (tls_mask & TLS_LD) == 0)
411e1bfb 13338 {
951fd09b
AM		 13339 tls_gdld_hi:
13340 if ((tls_mask & tls_gd) != 0)
13341 r_type = (((r_type - (R_PPC64_GOT_TLSGD16 & 3)) & 3)
13342 + R_PPC64_GOT_TPREL16_DS);
13343 else
411e1bfb 13344 {
4fe5ca5b 13345 rel->r_offset -= d_offset;
727ac201 13346 bfd_put_32 (output_bfd, NOP, contents + rel->r_offset);
951fd09b 13347 r_type = R_PPC64_NONE;
411e1bfb 13348 }
951fd09b 13349 rel->r_info = ELF64_R_INFO (r_symndx, r_type);
411e1bfb
AM		 13350 }
13351 break;
13352
951fd09b
AM		 13353 case R_PPC64_GOT_TLSGD16:
13354 case R_PPC64_GOT_TLSGD16_LO:
13355 tls_gd = TLS_TPRELGD;
13356 if (tls_mask != 0 && (tls_mask & TLS_GD) == 0)
102890f0 13357 goto tls_ldgd_opt;
951fd09b 13358 break;
411e1bfb 13359
951fd09b
AM		 13360 case R_PPC64_GOT_TLSLD16:
13361 case R_PPC64_GOT_TLSLD16_LO:
13362 if (tls_mask != 0 && (tls_mask & TLS_LD) == 0)
13363 {
3a71aa26 13364 unsigned int insn1, insn2, insn3;
102890f0
AM		 13365 bfd_vma offset;
13366
13367 tls_ldgd_opt:
727fc41e
AM		 13368 offset = (bfd_vma) -1;
13369 /* If not using the newer R_PPC64_TLSGD/LD to mark
13370 __tls_get_addr calls, we must trust that the call
13371 stays with its arg setup insns, ie. that the next
13372 reloc is the __tls_get_addr call associated with
13373 the current reloc. Edit both insns. */
13374 if (input_section->has_tls_get_addr_call
13375 && rel + 1 < relend
13376 && branch_reloc_hash_match (input_bfd, rel + 1,
13377 htab->tls_get_addr,
13378 htab->tls_get_addr_fd))
13379 offset = rel[1].r_offset;
102890f0 13380 if ((tls_mask & tls_gd) != 0)
411e1bfb 13381 {
102890f0 13382 /* IE */
3a71aa26
AM		 13383 insn1 = bfd_get_32 (output_bfd,
13384 contents + rel->r_offset - d_offset);
102890f0
AM		 13385 insn1 &= (1 << 26) - (1 << 2);
13386 insn1 |= 58 << 26; /* ld */
13387 insn2 = 0x7c636a14; /* add 3,3,13 */
727fc41e 13388 if (offset != (bfd_vma) -1)
f58d5a2d 13389 rel[1].r_info = ELF64_R_INFO (STN_UNDEF, R_PPC64_NONE);
102890f0
AM		 13390 if ((tls_mask & TLS_EXPLICIT) == 0)
13391 r_type = (((r_type - (R_PPC64_GOT_TLSGD16 & 3)) & 3)
13392 + R_PPC64_GOT_TPREL16_DS);
411e1bfb 13393 else
102890f0
AM		 13394 r_type += R_PPC64_TOC16_DS - R_PPC64_TOC16;
13395 rel->r_info = ELF64_R_INFO (r_symndx, r_type);
13396 }
13397 else
13398 {
13399 /* LE */
13400 insn1 = 0x3c6d0000; /* addis 3,13,0 */
13401 insn2 = 0x38630000; /* addi 3,3,0 */
13402 if (tls_gd == 0)
951fd09b 13403 {
102890f0 13404 /* Was an LD reloc. */
1d483afe
AM		 13405 if (toc_symndx)
13406 sec = local_sections[toc_symndx];
13407 for (r_symndx = 0;
13408 r_symndx < symtab_hdr->sh_info;
13409 r_symndx++)
13410 if (local_sections[r_symndx] == sec)
13411 break;
13412 if (r_symndx >= symtab_hdr->sh_info)
cf35638d 13413 r_symndx = STN_UNDEF;
102890f0 13414 rel->r_addend = htab->elf.tls_sec->vma + DTP_OFFSET;
cf35638d 13415 if (r_symndx != STN_UNDEF)
1d483afe
AM		 13416 rel->r_addend -= (local_syms[r_symndx].st_value
13417 + sec->output_offset
13418 + sec->output_section->vma);
951fd09b 13419 }
102890f0 13420 else if (toc_symndx != 0)
3a71aa26
AM		 13421 {
13422 r_symndx = toc_symndx;
13423 rel->r_addend = toc_addend;
13424 }
102890f0
AM		 13425 r_type = R_PPC64_TPREL16_HA;
13426 rel->r_info = ELF64_R_INFO (r_symndx, r_type);
727fc41e
AM		 13427 if (offset != (bfd_vma) -1)
13428 {
13429 rel[1].r_info = ELF64_R_INFO (r_symndx,
13430 R_PPC64_TPREL16_LO);
13431 rel[1].r_offset = offset + d_offset;
13432 rel[1].r_addend = rel->r_addend;
13433 }
102890f0 13434 }
3a71aa26
AM		 13435 bfd_put_32 (output_bfd, insn1,
13436 contents + rel->r_offset - d_offset);
727fc41e
AM		 13437 if (offset != (bfd_vma) -1)
13438 {
13439 insn3 = bfd_get_32 (output_bfd,
13440 contents + offset + 4);
13441 if (insn3 == NOP
13442 || insn3 == CROR_151515 || insn3 == CROR_313131)
13443 {
13444 rel[1].r_offset += 4;
13445 bfd_put_32 (output_bfd, insn2, contents + offset + 4);
13446 insn2 = NOP;
13447 }
13448 bfd_put_32 (output_bfd, insn2, contents + offset);
13449 }
13450 if ((tls_mask & tls_gd) == 0
13451 && (tls_gd == 0 || toc_symndx != 0))
13452 {
13453 /* We changed the symbol. Start over in order
13454 to get h, sym, sec etc. right. */
13455 rel--;
13456 continue;
13457 }
13458 }
13459 break;
13460
13461 case R_PPC64_TLSGD:
13462 if (tls_mask != 0 && (tls_mask & TLS_GD) == 0)
13463 {
13464 unsigned int insn2, insn3;
13465 bfd_vma offset = rel->r_offset;
13466
13467 if ((tls_mask & TLS_TPRELGD) != 0)
13468 {
13469 /* IE */
13470 r_type = R_PPC64_NONE;
13471 insn2 = 0x7c636a14; /* add 3,3,13 */
13472 }
13473 else
13474 {
13475 /* LE */
13476 if (toc_symndx != 0)
13477 {
13478 r_symndx = toc_symndx;
13479 rel->r_addend = toc_addend;
13480 }
13481 r_type = R_PPC64_TPREL16_LO;
13482 rel->r_offset = offset + d_offset;
13483 insn2 = 0x38630000; /* addi 3,3,0 */
13484 }
13485 rel->r_info = ELF64_R_INFO (r_symndx, r_type);
13486 /* Zap the reloc on the _tls_get_addr call too. */
13487 BFD_ASSERT (offset == rel[1].r_offset);
f58d5a2d 13488 rel[1].r_info = ELF64_R_INFO (STN_UNDEF, R_PPC64_NONE);
3a71aa26
AM		 13489 insn3 = bfd_get_32 (output_bfd,
13490 contents + offset + 4);
102890f0
AM		 13491 if (insn3 == NOP
13492 || insn3 == CROR_151515 || insn3 == CROR_313131)
13493 {
727fc41e 13494 rel->r_offset += 4;
3a71aa26
AM		 13495 bfd_put_32 (output_bfd, insn2, contents + offset + 4);
13496 insn2 = NOP;
102890f0 13497 }
102890f0 13498 bfd_put_32 (output_bfd, insn2, contents + offset);
727fc41e 13499 if ((tls_mask & TLS_TPRELGD) == 0 && toc_symndx != 0)
102890f0 13500 {
102890f0
AM		 13501 rel--;
13502 continue;
411e1bfb 13503 }
411e1bfb 13504 }
411e1bfb
AM		 13505 break;
13506
727fc41e
AM		 13507 case R_PPC64_TLSLD:
13508 if (tls_mask != 0 && (tls_mask & TLS_LD) == 0)
13509 {
13510 unsigned int insn2, insn3;
13511 bfd_vma offset = rel->r_offset;
13512
13513 if (toc_symndx)
13514 sec = local_sections[toc_symndx];
13515 for (r_symndx = 0;
13516 r_symndx < symtab_hdr->sh_info;
13517 r_symndx++)
13518 if (local_sections[r_symndx] == sec)
13519 break;
13520 if (r_symndx >= symtab_hdr->sh_info)
cf35638d 13521 r_symndx = STN_UNDEF;
727fc41e 13522 rel->r_addend = htab->elf.tls_sec->vma + DTP_OFFSET;
cf35638d 13523 if (r_symndx != STN_UNDEF)
727fc41e
AM		 13524 rel->r_addend -= (local_syms[r_symndx].st_value
13525 + sec->output_offset
13526 + sec->output_section->vma);
13527
13528 r_type = R_PPC64_TPREL16_LO;
13529 rel->r_info = ELF64_R_INFO (r_symndx, r_type);
13530 rel->r_offset = offset + d_offset;
13531 /* Zap the reloc on the _tls_get_addr call too. */
13532 BFD_ASSERT (offset == rel[1].r_offset);
f58d5a2d 13533 rel[1].r_info = ELF64_R_INFO (STN_UNDEF, R_PPC64_NONE);
727fc41e
AM		 13534 insn2 = 0x38630000; /* addi 3,3,0 */
13535 insn3 = bfd_get_32 (output_bfd,
13536 contents + offset + 4);
13537 if (insn3 == NOP
13538 || insn3 == CROR_151515 || insn3 == CROR_313131)
13539 {
13540 rel->r_offset += 4;
13541 bfd_put_32 (output_bfd, insn2, contents + offset + 4);
13542 insn2 = NOP;
13543 }
13544 bfd_put_32 (output_bfd, insn2, contents + offset);
13545 rel--;
13546 continue;
13547 }
13548 break;
13549
411e1bfb 13550 case R_PPC64_DTPMOD64:
951fd09b
AM		 13551 if (rel + 1 < relend
13552 && rel[1].r_info == ELF64_R_INFO (r_symndx, R_PPC64_DTPREL64)
13553 && rel[1].r_offset == rel->r_offset + 8)
411e1bfb 13554 {
951fd09b
AM		 13555 if ((tls_mask & TLS_GD) == 0)
13556 {
13557 rel[1].r_info = ELF64_R_INFO (r_symndx, R_PPC64_NONE);
13558 if ((tls_mask & TLS_TPRELGD) != 0)
13559 r_type = R_PPC64_TPREL64;
13560 else
13561 {
4ce794b7 13562 bfd_put_64 (output_bfd, 1, contents + rel->r_offset);
951fd09b
AM		 13563 r_type = R_PPC64_NONE;
13564 }
13565 rel->r_info = ELF64_R_INFO (r_symndx, r_type);
13566 }
13567 }
13568 else
13569 {
13570 if ((tls_mask & TLS_LD) == 0)
411e1bfb 13571 {
4ce794b7 13572 bfd_put_64 (output_bfd, 1, contents + rel->r_offset);
411e1bfb 13573 r_type = R_PPC64_NONE;
951fd09b 13574 rel->r_info = ELF64_R_INFO (r_symndx, r_type);
411e1bfb 13575 }
411e1bfb
AM		 13576 }
13577 break;
13578
13579 case R_PPC64_TPREL64:
951fd09b 13580 if ((tls_mask & TLS_TPREL) == 0)
411e1bfb
AM		 13581 {
13582 r_type = R_PPC64_NONE;
13583 rel->r_info = ELF64_R_INFO (r_symndx, r_type);
13584 }
13585 break;
52a82034
AM		 13586
13587 case R_PPC64_REL16_HA:
13588 /* If we are generating a non-PIC executable, edit
13589 . 0: addis 2,12,.TOC.-0b@ha
13590 . addi 2,2,.TOC.-0b@l
13591 used by ELFv2 global entry points to set up r2, to
13592 . lis 2,.TOC.@ha
13593 . addi 2,2,.TOC.@l
13594 if .TOC. is in range. */
13595 if (!info->shared
810d4e75 13596 && !info->traditional_format
52a82034
AM		 13597 && h != NULL && &h->elf == htab->elf.hgot
13598 && rel + 1 < relend
13599 && rel[1].r_info == ELF64_R_INFO (r_symndx, R_PPC64_REL16_LO)
13600 && rel[1].r_offset == rel->r_offset + 4
13601 && rel[1].r_addend == rel->r_addend + 4
13602 && relocation + 0x80008000 <= 0xffffffff)
13603 {
13604 unsigned int insn1, insn2;
13605 bfd_vma offset = rel->r_offset - d_offset;
13606 insn1 = bfd_get_32 (output_bfd, contents + offset);
13607 insn2 = bfd_get_32 (output_bfd, contents + offset + 4);
13608 if ((insn1 & 0xffff0000) == 0x3c4c0000 /* addis 2,12 */
13609 && (insn2 & 0xffff0000) == 0x38420000 /* addi 2,2 */)
13610 {
13611 r_type = R_PPC64_ADDR16_HA;
13612 rel->r_info = ELF64_R_INFO (r_symndx, r_type);
13613 rel->r_addend -= d_offset;
13614 rel[1].r_info = ELF64_R_INFO (r_symndx, R_PPC64_ADDR16_LO);
13615 rel[1].r_addend -= d_offset + 4;
13616 bfd_put_32 (output_bfd, 0x3c400000, contents + offset);
13617 }
13618 }
13619 break;
411e1bfb
AM		 13620 }
13621
13622 /* Handle other relocations that tweak non-addend part of insn. */
86c76c7b 13623 insn = 0;
b25116a9
AM		 13624 max_br_offset = 1 << 25;
13625 addend = rel->r_addend;
bc30df16 13626 reloc_dest = DEST_NORMAL;
65f38f15 13627 switch (r_type)
5bd4f169
AM		 13628 {
13629 default:
65f38f15 13630 break;
5bd4f169 13631
3b421ab3
AM		 13632 case R_PPC64_TOCSAVE:
13633 if (relocation + addend == (rel->r_offset
13634 + input_section->output_offset
13635 + input_section->output_section->vma)
13636 && tocsave_find (htab, NO_INSERT,
13637 &local_syms, rel, input_bfd))
13638 {
13639 insn = bfd_get_32 (input_bfd, contents + rel->r_offset);
13640 if (insn == NOP
13641 || insn == CROR_151515 || insn == CROR_313131)
a078d95a
AM		 13642 bfd_put_32 (input_bfd,
13643 STD_R2_0R1 + STK_TOC (htab),
3b421ab3
AM		 13644 contents + rel->r_offset);
13645 }
13646 break;
13647
65f38f15
AM		 13648 /* Branch taken prediction relocations. */
13649 case R_PPC64_ADDR14_BRTAKEN:
13650 case R_PPC64_REL14_BRTAKEN:
cedb70c5
KH		 13651 insn = 0x01 << 21; /* 'y' or 't' bit, lowest bit of BO field. */
13652 /* Fall thru. */
65f38f15 13653
86c76c7b 13654 /* Branch not taken prediction relocations. */
65f38f15
AM		 13655 case R_PPC64_ADDR14_BRNTAKEN:
13656 case R_PPC64_REL14_BRNTAKEN:
411e1bfb
AM		 13657 insn |= bfd_get_32 (output_bfd,
13658 contents + rel->r_offset) & ~(0x01 << 21);
b25116a9 13659 /* Fall thru. */
86c76c7b 13660
b25116a9
AM		 13661 case R_PPC64_REL14:
13662 max_br_offset = 1 << 15;
13663 /* Fall thru. */
5bd4f169 13664
65f38f15 13665 case R_PPC64_REL24:
ad8e1ba5
AM		 13666 /* Calls to functions with a different TOC, such as calls to
13667 shared objects, need to alter the TOC pointer. This is
13668 done using a linkage stub. A REL24 branching to these
13669 linkage stubs needs to be followed by a nop, as the nop
13670 will be replaced with an instruction to restore the TOC
13671 base pointer. */
8387904d 13672 fdh = h;
b31867b6
AM		 13673 if (h != NULL
13674 && h->oh != NULL
13675 && h->oh->is_func_descriptor)
13676 fdh = ppc_follow_link (h->oh);
31c76678
DK		 13677 stub_entry = ppc_get_stub_entry (input_section, sec, fdh, &orig_rel,
13678 htab);
6abec6bc 13679 if (stub_entry != NULL
ad8e1ba5 13680 && (stub_entry->stub_type == ppc_stub_plt_call
794e51c0 13681 || stub_entry->stub_type == ppc_stub_plt_call_r2save
ad8e1ba5
AM		 13682 || stub_entry->stub_type == ppc_stub_plt_branch_r2off
13683 || stub_entry->stub_type == ppc_stub_long_branch_r2off))
41bd81ab 13684 {
b25116a9 13685 bfd_boolean can_plt_call = FALSE;
721956f4 13686
ba8ca3e7
AM		 13687 /* All of these stubs will modify r2, so there must be a
13688 branch and link followed by a nop. The nop is
13689 replaced by an insn to restore r2. */
eea6121a 13690 if (rel->r_offset + 8 <= input_section->size)
41bd81ab 13691 {
ba8ca3e7
AM		 13692 unsigned long br;
13693
13694 br = bfd_get_32 (input_bfd,
13695 contents + rel->r_offset);
13696 if ((br & 1) != 0)
41bd81ab 13697 {
ba8ca3e7
AM		 13698 unsigned long nop;
13699
13700 nop = bfd_get_32 (input_bfd,
13701 contents + rel->r_offset + 4);
13702 if (nop == NOP
13703 || nop == CROR_151515 || nop == CROR_313131)
a7f2871e 13704 {
ba8ca3e7
AM		 13705 if (h != NULL
13706 && (h == htab->tls_get_addr_fd
13707 || h == htab->tls_get_addr)
e7d1c40c 13708 && !htab->params->no_tls_get_addr_opt)
ba8ca3e7
AM		 13709 {
13710 /* Special stub used, leave nop alone. */
13711 }
13712 else
a078d95a
AM		 13713 bfd_put_32 (input_bfd,
13714 LD_R2_0R1 + STK_TOC (htab),
ba8ca3e7
AM		 13715 contents + rel->r_offset + 4);
13716 can_plt_call = TRUE;
a7f2871e 13717 }
41bd81ab 13718 }
5bd4f169 13719 }
721956f4 13720
ba8ca3e7 13721 if (!can_plt_call && h != NULL)
721956f4 13722 {
ba8ca3e7
AM		 13723 const char *name = h->elf.root.root.string;
13724
13725 if (*name == '.')
13726 ++name;
13727
13728 if (strncmp (name, "__libc_start_main", 17) == 0
13729 && (name[17] == 0 || name[17] == '@'))
6ab189d5 13730 {
ba8ca3e7
AM		 13731 /* Allow crt1 branch to go via a toc adjusting
13732 stub. Other calls that never return could do
13733 the same, if we could detect such. */
b25116a9 13734 can_plt_call = TRUE;
6ab189d5 13735 }
ba8ca3e7
AM		 13736 }
13737
13738 if (!can_plt_call)
13739 {
13740 /* g++ as of 20130507 emits self-calls without a
13741 following nop. This is arguably wrong since we
13742 have conflicting information. On the one hand a
13743 global symbol and on the other a local call
13744 sequence, but don't error for this special case.
13745 It isn't possible to cheaply verify we have
13746 exactly such a call. Allow all calls to the same
13747 section. */
13748 asection *code_sec = sec;
13749
13750 if (get_opd_info (sec) != NULL)
ad8e1ba5 13751 {
ba8ca3e7
AM		 13752 bfd_vma off = (relocation + addend
13753 - sec->output_section->vma
13754 - sec->output_offset);
bc30df16 13755
ba8ca3e7 13756 opd_entry_value (sec, off, &code_sec, NULL, FALSE);
ad8e1ba5 13757 }
ba8ca3e7
AM		 13758 if (code_sec == input_section)
13759 can_plt_call = TRUE;
13760 }
13761
13762 if (!can_plt_call)
13763 {
13764 info->callbacks->einfo
13765 (_("%P: %H: call to `%T' lacks nop, can't restore toc; "
1a1fb627 13766 "recompile with -fPIC\n"),
ba8ca3e7
AM		 13767 input_bfd, input_section, rel->r_offset, sym_name);
13768
13769 bfd_set_error (bfd_error_bad_value);
13770 ret = FALSE;
721956f4
AM		 13771 }
13772
b25116a9 13773 if (can_plt_call
794e51c0
AM		 13774 && (stub_entry->stub_type == ppc_stub_plt_call
13775 || stub_entry->stub_type == ppc_stub_plt_call_r2save))
b25116a9
AM		 13776 unresolved_reloc = FALSE;
13777 }
13778
6abec6bc
AM		 13779 if ((stub_entry == NULL
13780 || stub_entry->stub_type == ppc_stub_long_branch
13781 || stub_entry->stub_type == ppc_stub_plt_branch)
8387904d
AM		 13782 && get_opd_info (sec) != NULL)
13783 {
13784 /* The branch destination is the value of the opd entry. */
4cc603a5
AM		 13785 bfd_vma off = (relocation + addend
13786 - sec->output_section->vma
13787 - sec->output_offset);
aef36ac1 13788 bfd_vma dest = opd_entry_value (sec, off, NULL, NULL, FALSE);
8387904d
AM		 13789 if (dest != (bfd_vma) -1)
13790 {
13791 relocation = dest;
13792 addend = 0;
bc30df16 13793 reloc_dest = DEST_OPD;
8387904d
AM		 13794 }
13795 }
13796
b25116a9
AM		 13797 /* If the branch is out of reach we ought to have a long
13798 branch stub. */
13799 from = (rel->r_offset
13800 + input_section->output_offset
13801 + input_section->output_section->vma);
13802
6911b7dc
AM		 13803 relocation += PPC64_LOCAL_ENTRY_OFFSET (fdh
13804 ? fdh->elf.other
13805 : sym->st_other);
13806
6abec6bc
AM		 13807 if (stub_entry != NULL
13808 && (stub_entry->stub_type == ppc_stub_long_branch
13809 || stub_entry->stub_type == ppc_stub_plt_branch)
13810 && (r_type == R_PPC64_ADDR14_BRTAKEN
13811 || r_type == R_PPC64_ADDR14_BRNTAKEN
13812 || (relocation + addend - from + max_br_offset
13813 < 2 * max_br_offset)))
13814 /* Don't use the stub if this branch is in range. */
13815 stub_entry = NULL;
b25116a9
AM		 13816
13817 if (stub_entry != NULL)
13818 {
13819 /* Munge up the value and addend so that we call the stub
13820 rather than the procedure directly. */
13821 relocation = (stub_entry->stub_offset
13822 + stub_entry->stub_sec->output_offset
13823 + stub_entry->stub_sec->output_section->vma);
13824 addend = 0;
bc30df16 13825 reloc_dest = DEST_STUB;
3b421ab3 13826
794e51c0
AM		 13827 if ((stub_entry->stub_type == ppc_stub_plt_call
13828 || stub_entry->stub_type == ppc_stub_plt_call_r2save)
13829 && (ALWAYS_EMIT_R2SAVE
13830 || stub_entry->stub_type == ppc_stub_plt_call_r2save)
3b421ab3
AM		 13831 && rel + 1 < relend
13832 && rel[1].r_offset == rel->r_offset + 4
13833 && ELF64_R_TYPE (rel[1].r_info) == R_PPC64_TOCSAVE)
13834 relocation += 4;
b25116a9
AM		 13835 }
13836
13837 if (insn != 0)
13838 {
794e51c0 13839 if (is_isa_v2)
721956f4 13840 {
b25116a9
AM		 13841 /* Set 'a' bit. This is 0b00010 in BO field for branch
13842 on CR(BI) insns (BO == 001at or 011at), and 0b01000
13843 for branch on CTR insns (BO == 1a00t or 1a01t). */
13844 if ((insn & (0x14 << 21)) == (0x04 << 21))
13845 insn |= 0x02 << 21;
13846 else if ((insn & (0x14 << 21)) == (0x10 << 21))
13847 insn |= 0x08 << 21;
13848 else
13849 break;
13850 }
13851 else
13852 {
13853 /* Invert 'y' bit if not the default. */
4cc603a5 13854 if ((bfd_signed_vma) (relocation + addend - from) < 0)
b25116a9 13855 insn ^= 0x01 << 21;
721956f4 13856 }
b25116a9
AM		 13857
13858 bfd_put_32 (output_bfd, insn, contents + rel->r_offset);
5bd4f169 13859 }
e86ce104 13860
06da1e8e
AM		 13861 /* NOP out calls to undefined weak functions.
13862 We can thus call a weak function without first
13863 checking whether the function is defined. */
b25116a9 13864 else if (h != NULL
039b3fef 13865 && h->elf.root.type == bfd_link_hash_undefweak
766bc656 13866 && h->elf.dynindx == -1
b25116a9
AM		 13867 && r_type == R_PPC64_REL24
13868 && relocation == 0
4cc603a5 13869 && addend == 0)
e86ce104 13870 {
06da1e8e
AM		 13871 bfd_put_32 (output_bfd, NOP, contents + rel->r_offset);
13872 continue;
e86ce104 13873 }
65f38f15
AM		 13874 break;
13875 }
5bd4f169 13876
65f38f15 13877 /* Set `addend'. */
411e1bfb 13878 tls_type = 0;
65f38f15
AM		 13879 switch (r_type)
13880 {
13881 default:
25f53a85 13882 info->callbacks->einfo
bc30df16 13883 (_("%P: %B: unknown relocation type %d for `%T'\n"),
d003868e 13884 input_bfd, (int) r_type, sym_name);
5bd4f169 13885
65f38f15 13886 bfd_set_error (bfd_error_bad_value);
b34976b6 13887 ret = FALSE;
65f38f15 13888 continue;
5bd4f169 13889
65f38f15 13890 case R_PPC64_NONE:
411e1bfb 13891 case R_PPC64_TLS:
727fc41e
AM		 13892 case R_PPC64_TLSGD:
13893 case R_PPC64_TLSLD:
3b421ab3 13894 case R_PPC64_TOCSAVE:
04c9666a
AM		 13895 case R_PPC64_GNU_VTINHERIT:
13896 case R_PPC64_GNU_VTENTRY:
65f38f15 13897 continue;
5bd4f169
AM		 13898
13899 /* GOT16 relocations. Like an ADDR16 using the symbol's
13900 address in the GOT as relocation value instead of the
411e1bfb 13901 symbol's value itself. Also, create a GOT entry for the
5bd4f169 13902 symbol and put the symbol value there. */
411e1bfb
AM		 13903 case R_PPC64_GOT_TLSGD16:
13904 case R_PPC64_GOT_TLSGD16_LO:
13905 case R_PPC64_GOT_TLSGD16_HI:
13906 case R_PPC64_GOT_TLSGD16_HA:
951fd09b 13907 tls_type = TLS_TLS | TLS_GD;
411e1bfb
AM		 13908 goto dogot;
13909
13910 case R_PPC64_GOT_TLSLD16:
13911 case R_PPC64_GOT_TLSLD16_LO:
13912 case R_PPC64_GOT_TLSLD16_HI:
13913 case R_PPC64_GOT_TLSLD16_HA:
951fd09b 13914 tls_type = TLS_TLS | TLS_LD;
411e1bfb
AM		 13915 goto dogot;
13916
13917 case R_PPC64_GOT_TPREL16_DS:
13918 case R_PPC64_GOT_TPREL16_LO_DS:
13919 case R_PPC64_GOT_TPREL16_HI:
13920 case R_PPC64_GOT_TPREL16_HA:
13921 tls_type = TLS_TLS | TLS_TPREL;
13922 goto dogot;
13923
13924 case R_PPC64_GOT_DTPREL16_DS:
13925 case R_PPC64_GOT_DTPREL16_LO_DS:
13926 case R_PPC64_GOT_DTPREL16_HI:
13927 case R_PPC64_GOT_DTPREL16_HA:
13928 tls_type = TLS_TLS | TLS_DTPREL;
13929 goto dogot;
13930
65f38f15
AM		 13931 case R_PPC64_GOT16:
13932 case R_PPC64_GOT16_LO:
13933 case R_PPC64_GOT16_HI:
13934 case R_PPC64_GOT16_HA:
13935 case R_PPC64_GOT16_DS:
13936 case R_PPC64_GOT16_LO_DS:
411e1bfb 13937 dogot:
5bd4f169
AM		 13938 {
13939 /* Relocation is to the entry for this symbol in the global
13940 offset table. */
e717da7e 13941 asection *got;
d881513a 13942 bfd_vma *offp;
5bd4f169 13943 bfd_vma off;
d881513a 13944 unsigned long indx = 0;
927be08e 13945 struct got_entry *ent;
65f38f15 13946
d881513a
AM		 13947 if (tls_type == (TLS_TLS | TLS_LD)
13948 && (h == NULL
f5385ebf 13949 || !h->elf.def_dynamic))
927be08e 13950 ent = ppc64_tlsld_got (input_bfd);
411e1bfb 13951 else
5bd4f169 13952 {
5bd4f169 13953
d881513a
AM		 13954 if (h != NULL)
13955 {
13956 bfd_boolean dyn = htab->elf.dynamic_sections_created;
039b3fef
AM		 13957 if (!WILL_CALL_FINISH_DYNAMIC_SYMBOL (dyn, info->shared,
13958 &h->elf)
d881513a 13959 || (info->shared
afe397ea 13960 && SYMBOL_REFERENCES_LOCAL (info, &h->elf)))
d881513a
AM		 13961 /* This is actually a static link, or it is a
13962 -Bsymbolic link and the symbol is defined
13963 locally, or the symbol was forced to be local
13964 because of a version file. */
13965 ;
13966 else
13967 {
14acf4dc 13968 BFD_ASSERT (h->elf.dynindx != -1);
039b3fef 13969 indx = h->elf.dynindx;
d881513a
AM		 13970 unresolved_reloc = FALSE;
13971 }
039b3fef 13972 ent = h->elf.got.glist;
d881513a 13973 }
411e1bfb 13974 else
5bd4f169 13975 {
d881513a
AM		 13976 if (local_got_ents == NULL)
13977 abort ();
13978 ent = local_got_ents[r_symndx];
5bd4f169 13979 }
d881513a
AM		 13980
13981 for (; ent != NULL; ent = ent->next)
31c76678 13982 if (ent->addend == orig_rel.r_addend
e717da7e 13983 && ent->owner == input_bfd
d881513a
AM		 13984 && ent->tls_type == tls_type)
13985 break;
5bd4f169 13986 }
411e1bfb 13987
927be08e
AM		 13988 if (ent == NULL)
13989 abort ();
13990 if (ent->is_indirect)
13991 ent = ent->got.ent;
13992 offp = &ent->got.offset;
13993 got = ppc64_elf_tdata (ent->owner)->got;
e717da7e
AM		 13994 if (got == NULL)
13995 abort ();
13996
411e1bfb
AM		 13997 /* The offset must always be a multiple of 8. We use the
13998 least significant bit to record whether we have already
13999 processed this entry. */
d881513a 14000 off = *offp;
411e1bfb
AM		 14001 if ((off & 1) != 0)
14002 off &= ~1;
5bd4f169
AM		 14003 else
14004 {
411e1bfb
AM		 14005 /* Generate relocs for the dynamic linker, except in
14006 the case of TLSLD where we'll use one entry per
14007 module. */
25f23106
AM		 14008 asection *relgot;
14009 bfd_boolean ifunc;
e717da7e 14010
d881513a 14011 *offp = off | 1;
25f23106
AM		 14012 relgot = NULL;
14013 ifunc = (h != NULL
14014 ? h->elf.type == STT_GNU_IFUNC
14015 : ELF_ST_TYPE (sym->st_info) == STT_GNU_IFUNC);
19e08130 14016 if (ifunc)
33e44f2e 14017 relgot = htab->elf.irelplt;
19e08130
AM		 14018 else if ((info->shared || indx != 0)
14019 && (h == NULL
14020 || (tls_type == (TLS_TLS | TLS_LD)
14021 && !h->elf.def_dynamic)
14022 || ELF_ST_VISIBILITY (h->elf.other) == STV_DEFAULT
14023 || h->elf.root.type != bfd_link_hash_undefweak))
14024 relgot = ppc64_elf_tdata (ent->owner)->relgot;
25f23106 14025 if (relgot != NULL)
5bd4f169 14026 {
e717da7e
AM		 14027 outrel.r_offset = (got->output_section->vma
14028 + got->output_offset
411e1bfb 14029 + off);
4cc603a5 14030 outrel.r_addend = addend;
d881513a 14031 if (tls_type & (TLS_LD | TLS_GD))
5bd4f169 14032 {
411e1bfb 14033 outrel.r_addend = 0;
e515b051 14034 outrel.r_info = ELF64_R_INFO (indx, R_PPC64_DTPMOD64);
d881513a
AM		 14035 if (tls_type == (TLS_TLS | TLS_GD))
14036 {
e717da7e
AM		 14037 loc = relgot->contents;
14038 loc += (relgot->reloc_count++
d881513a
AM		 14039 * sizeof (Elf64_External_Rela));
14040 bfd_elf64_swap_reloca_out (output_bfd,
14041 &outrel, loc);
e515b051 14042 outrel.r_offset += 8;
4cc603a5 14043 outrel.r_addend = addend;
d881513a
AM		 14044 outrel.r_info
14045 = ELF64_R_INFO (indx, R_PPC64_DTPREL64);
d881513a 14046 }
411e1bfb 14047 }
951fd09b 14048 else if (tls_type == (TLS_TLS | TLS_DTPREL))
411e1bfb 14049 outrel.r_info = ELF64_R_INFO (indx, R_PPC64_DTPREL64);
951fd09b 14050 else if (tls_type == (TLS_TLS | TLS_TPREL))
411e1bfb 14051 outrel.r_info = ELF64_R_INFO (indx, R_PPC64_TPREL64);
25f23106
AM		 14052 else if (indx != 0)
14053 outrel.r_info = ELF64_R_INFO (indx, R_PPC64_GLOB_DAT);
14054 else
81407a69 14055 {
25f23106
AM		 14056 if (ifunc)
14057 outrel.r_info = ELF64_R_INFO (0, R_PPC64_IRELATIVE);
14058 else
14059 outrel.r_info = ELF64_R_INFO (0, R_PPC64_RELATIVE);
81407a69
AM		 14060
14061 /* Write the .got section contents for the sake
14062 of prelink. */
e717da7e 14063 loc = got->contents + off;
23fbd6fa
JJ		 14064 bfd_put_64 (output_bfd, outrel.r_addend + relocation,
14065 loc);
81407a69 14066 }
81407a69
AM		 14067
14068 if (indx == 0 && tls_type != (TLS_TLS | TLS_LD))
e515b051
AM		 14069 {
14070 outrel.r_addend += relocation;
14071 if (tls_type & (TLS_GD | TLS_DTPREL | TLS_TPREL))
e1918d23 14072 outrel.r_addend -= htab->elf.tls_sec->vma;
e515b051 14073 }
e717da7e
AM		 14074 loc = relgot->contents;
14075 loc += (relgot->reloc_count++
411e1bfb
AM		 14076 * sizeof (Elf64_External_Rela));
14077 bfd_elf64_swap_reloca_out (output_bfd, &outrel, loc);
14078 }
14079
ad8e1ba5 14080 /* Init the .got section contents here if we're not
81407a69 14081 emitting a reloc. */
d881513a 14082 else
411e1bfb 14083 {
4cc603a5 14084 relocation += addend;
7b609f53
AM		 14085 if (tls_type == (TLS_TLS | TLS_LD))
14086 relocation = 1;
14087 else if (tls_type != 0)
411e1bfb 14088 {
e1918d23 14089 relocation -= htab->elf.tls_sec->vma + DTP_OFFSET;
7b609f53 14090 if (tls_type == (TLS_TLS | TLS_TPREL))
411e1bfb 14091 relocation += DTP_OFFSET - TP_OFFSET;
5bd4f169 14092
7b609f53
AM		 14093 if (tls_type == (TLS_TLS | TLS_GD))
14094 {
14095 bfd_put_64 (output_bfd, relocation,
e717da7e 14096 got->contents + off + 8);
7b609f53
AM		 14097 relocation = 1;
14098 }
411e1bfb 14099 }
7b609f53 14100
411e1bfb 14101 bfd_put_64 (output_bfd, relocation,
e717da7e 14102 got->contents + off);
5bd4f169
AM		 14103 }
14104 }
14105
65f38f15
AM		 14106 if (off >= (bfd_vma) -2)
14107 abort ();
14108
bf102f86
AM		 14109 relocation = got->output_section->vma + got->output_offset + off;
14110 addend = -(TOCstart + htab->stub_group[input_section->id].toc_off);
5bd4f169 14111 }
65f38f15
AM		 14112 break;
14113
14114 case R_PPC64_PLT16_HA:
14115 case R_PPC64_PLT16_HI:
14116 case R_PPC64_PLT16_LO:
14117 case R_PPC64_PLT32:
14118 case R_PPC64_PLT64:
14119 /* Relocation is to the entry for this symbol in the
14120 procedure linkage table. */
14121
14122 /* Resolve a PLT reloc against a local symbol directly,
14123 without using the procedure linkage table. */
14124 if (h == NULL)
14125 break;
14126
411e1bfb
AM		 14127 /* It's possible that we didn't make a PLT entry for this
14128 symbol. This happens when statically linking PIC code,
14129 or when using -Bsymbolic. Go find a match if there is a
14130 PLT entry. */
33e44f2e 14131 if (htab->elf.splt != NULL)
65f38f15 14132 {
411e1bfb 14133 struct plt_entry *ent;
039b3fef 14134 for (ent = h->elf.plt.plist; ent != NULL; ent = ent->next)
a345bc8d
AM		 14135 if (ent->plt.offset != (bfd_vma) -1
14136 && ent->addend == orig_rel.r_addend)
411e1bfb 14137 {
33e44f2e
AM		 14138 relocation = (htab->elf.splt->output_section->vma
14139 + htab->elf.splt->output_offset
411e1bfb
AM		 14140 + ent->plt.offset);
14141 unresolved_reloc = FALSE;
a345bc8d 14142 break;
411e1bfb 14143 }
65f38f15 14144 }
65f38f15 14145 break;
5bd4f169 14146
0b13192e
AM		 14147 case R_PPC64_TOC:
14148 /* Relocation value is TOC base. */
14149 relocation = TOCstart;
cf35638d 14150 if (r_symndx == STN_UNDEF)
0b13192e 14151 relocation += htab->stub_group[input_section->id].toc_off;
8517fae7
AM		 14152 else if (unresolved_reloc)
14153 ;
14154 else if (sec != NULL && sec->id <= htab->top_id)
0b13192e
AM		 14155 relocation += htab->stub_group[sec->id].toc_off;
14156 else
14157 unresolved_reloc = TRUE;
ab96bf03 14158 goto dodyn;
0b13192e 14159
5bd4f169
AM		 14160 /* TOC16 relocs. We want the offset relative to the TOC base,
14161 which is the address of the start of the TOC plus 0x8000.
14162 The TOC consists of sections .got, .toc, .tocbss, and .plt,
14163 in this order. */
65f38f15
AM		 14164 case R_PPC64_TOC16:
14165 case R_PPC64_TOC16_LO:
14166 case R_PPC64_TOC16_HI:
14167 case R_PPC64_TOC16_DS:
14168 case R_PPC64_TOC16_LO_DS:
14169 case R_PPC64_TOC16_HA:
ad8e1ba5 14170 addend -= TOCstart + htab->stub_group[input_section->id].toc_off;
5bd4f169
AM		 14171 break;
14172
14173 /* Relocate against the beginning of the section. */
65f38f15
AM		 14174 case R_PPC64_SECTOFF:
14175 case R_PPC64_SECTOFF_LO:
14176 case R_PPC64_SECTOFF_HI:
14177 case R_PPC64_SECTOFF_DS:
14178 case R_PPC64_SECTOFF_LO_DS:
14179 case R_PPC64_SECTOFF_HA:
4ce794b7 14180 if (sec != NULL)
65f38f15 14181 addend -= sec->output_section->vma;
5bd4f169
AM		 14182 break;
14183
25f23106
AM		 14184 case R_PPC64_REL16:
14185 case R_PPC64_REL16_LO:
14186 case R_PPC64_REL16_HI:
14187 case R_PPC64_REL16_HA:
14188 break;
14189
721956f4
AM		 14190 case R_PPC64_REL14:
14191 case R_PPC64_REL14_BRNTAKEN:
14192 case R_PPC64_REL14_BRTAKEN:
5d1634d7
AM		 14193 case R_PPC64_REL24:
14194 break;
14195
411e1bfb
AM		 14196 case R_PPC64_TPREL16:
14197 case R_PPC64_TPREL16_LO:
14198 case R_PPC64_TPREL16_HI:
14199 case R_PPC64_TPREL16_HA:
14200 case R_PPC64_TPREL16_DS:
14201 case R_PPC64_TPREL16_LO_DS:
f9c6b907
AM		 14202 case R_PPC64_TPREL16_HIGH:
14203 case R_PPC64_TPREL16_HIGHA:
411e1bfb
AM		 14204 case R_PPC64_TPREL16_HIGHER:
14205 case R_PPC64_TPREL16_HIGHERA:
14206 case R_PPC64_TPREL16_HIGHEST:
14207 case R_PPC64_TPREL16_HIGHESTA:
766bc656
AM		 14208 if (h != NULL
14209 && h->elf.root.type == bfd_link_hash_undefweak
14210 && h->elf.dynindx == -1)
14211 {
14212 /* Make this relocation against an undefined weak symbol
14213 resolve to zero. This is really just a tweak, since
14214 code using weak externs ought to check that they are
14215 defined before using them. */
14216 bfd_byte *p = contents + rel->r_offset - d_offset;
14217
14218 insn = bfd_get_32 (output_bfd, p);
14219 insn = _bfd_elf_ppc_at_tprel_transform (insn, 13);
14220 if (insn != 0)
14221 bfd_put_32 (output_bfd, insn, p);
14222 break;
14223 }
e1918d23 14224 addend -= htab->elf.tls_sec->vma + TP_OFFSET;
411e1bfb
AM		 14225 if (info->shared)
14226 /* The TPREL16 relocs shouldn't really be used in shared
14227 libs as they will result in DT_TEXTREL being set, but
14228 support them anyway. */
14229 goto dodyn;
14230 break;
14231
14232 case R_PPC64_DTPREL16:
14233 case R_PPC64_DTPREL16_LO:
14234 case R_PPC64_DTPREL16_HI:
14235 case R_PPC64_DTPREL16_HA:
14236 case R_PPC64_DTPREL16_DS:
14237 case R_PPC64_DTPREL16_LO_DS:
f9c6b907
AM		 14238 case R_PPC64_DTPREL16_HIGH:
14239 case R_PPC64_DTPREL16_HIGHA:
411e1bfb
AM		 14240 case R_PPC64_DTPREL16_HIGHER:
14241 case R_PPC64_DTPREL16_HIGHERA:
14242 case R_PPC64_DTPREL16_HIGHEST:
14243 case R_PPC64_DTPREL16_HIGHESTA:
e1918d23 14244 addend -= htab->elf.tls_sec->vma + DTP_OFFSET;
411e1bfb
AM		 14245 break;
14246
45965137
AM		 14247 case R_PPC64_ADDR64_LOCAL:
14248 addend += PPC64_LOCAL_ENTRY_OFFSET (h != NULL
14249 ? h->elf.other
14250 : sym->st_other);
14251 break;
14252
e515b051
AM		 14253 case R_PPC64_DTPMOD64:
14254 relocation = 1;
14255 addend = 0;
14256 goto dodyn;
14257
411e1bfb 14258 case R_PPC64_TPREL64:
e1918d23 14259 addend -= htab->elf.tls_sec->vma + TP_OFFSET;
411e1bfb
AM		 14260 goto dodyn;
14261
14262 case R_PPC64_DTPREL64:
e1918d23 14263 addend -= htab->elf.tls_sec->vma + DTP_OFFSET;
411e1bfb
AM		 14264 /* Fall thru */
14265
65f38f15
AM		 14266 /* Relocations that may need to be propagated if this is a
14267 dynamic object. */
04c9666a 14268 case R_PPC64_REL30:
65f38f15
AM		 14269 case R_PPC64_REL32:
14270 case R_PPC64_REL64:
14271 case R_PPC64_ADDR14:
14272 case R_PPC64_ADDR14_BRNTAKEN:
14273 case R_PPC64_ADDR14_BRTAKEN:
14274 case R_PPC64_ADDR16:
14275 case R_PPC64_ADDR16_DS:
14276 case R_PPC64_ADDR16_HA:
14277 case R_PPC64_ADDR16_HI:
f9c6b907
AM		 14278 case R_PPC64_ADDR16_HIGH:
14279 case R_PPC64_ADDR16_HIGHA:
65f38f15
AM		 14280 case R_PPC64_ADDR16_HIGHER:
14281 case R_PPC64_ADDR16_HIGHERA:
14282 case R_PPC64_ADDR16_HIGHEST:
14283 case R_PPC64_ADDR16_HIGHESTA:
14284 case R_PPC64_ADDR16_LO:
14285 case R_PPC64_ADDR16_LO_DS:
14286 case R_PPC64_ADDR24:
65f38f15
AM		 14287 case R_PPC64_ADDR32:
14288 case R_PPC64_ADDR64:
14289 case R_PPC64_UADDR16:
14290 case R_PPC64_UADDR32:
14291 case R_PPC64_UADDR64:
411e1bfb 14292 dodyn:
5d1634d7 14293 if ((input_section->flags & SEC_ALLOC) == 0)
ec338859
AM		 14294 break;
14295
41bd81ab
AM		 14296 if (NO_OPD_RELOCS && is_opd)
14297 break;
14298
65f38f15 14299 if ((info->shared
4e795f50 14300 && (h == NULL
039b3fef
AM		 14301 || ELF_ST_VISIBILITY (h->elf.other) == STV_DEFAULT
14302 || h->elf.root.type != bfd_link_hash_undefweak)
1d483afe 14303 && (must_be_dyn_reloc (info, r_type)
039b3fef 14304 || !SYMBOL_CALLS_LOCAL (info, &h->elf)))
f4656909
AM		 14305 || (ELIMINATE_COPY_RELOCS
14306 && !info->shared
65f38f15 14307 && h != NULL
039b3fef 14308 && h->elf.dynindx != -1
f5385ebf 14309 && !h->elf.non_got_ref
25f23106
AM		 14310 && !h->elf.def_regular)
14311 || (!info->shared
14312 && (h != NULL
14313 ? h->elf.type == STT_GNU_IFUNC
14314 : ELF_ST_TYPE (sym->st_info) == STT_GNU_IFUNC)))
65f38f15 14315 {
b34976b6 14316 bfd_boolean skip, relocate;
65f38f15 14317 asection *sreloc;
1cf1f670 14318 bfd_vma out_off;
65f38f15
AM		 14319
14320 /* When generating a dynamic object, these relocations
14321 are copied into the output file to be resolved at run
14322 time. */
14323
b34976b6
AM		 14324 skip = FALSE;
14325 relocate = FALSE;
65f38f15 14326
1cf1f670
AM		 14327 out_off = _bfd_elf_section_offset (output_bfd, info,
14328 input_section, rel->r_offset);
14329 if (out_off == (bfd_vma) -1)
b34976b6 14330 skip = TRUE;
1cf1f670 14331 else if (out_off == (bfd_vma) -2)
b34976b6 14332 skip = TRUE, relocate = TRUE;
1cf1f670
AM		 14333 out_off += (input_section->output_section->vma
14334 + input_section->output_offset);
14335 outrel.r_offset = out_off;
411e1bfb 14336 outrel.r_addend = rel->r_addend;
65f38f15 14337
1cf1f670
AM		 14338 /* Optimize unaligned reloc use. */
14339 if ((r_type == R_PPC64_ADDR64 && (out_off & 7) != 0)
14340 || (r_type == R_PPC64_UADDR64 && (out_off & 7) == 0))
14341 r_type ^= R_PPC64_ADDR64 ^ R_PPC64_UADDR64;
14342 else if ((r_type == R_PPC64_ADDR32 && (out_off & 3) != 0)
14343 || (r_type == R_PPC64_UADDR32 && (out_off & 3) == 0))
14344 r_type ^= R_PPC64_ADDR32 ^ R_PPC64_UADDR32;
14345 else if ((r_type == R_PPC64_ADDR16 && (out_off & 1) != 0)
14346 || (r_type == R_PPC64_UADDR16 && (out_off & 1) == 0))
14347 r_type ^= R_PPC64_ADDR16 ^ R_PPC64_UADDR16;
14348
65f38f15 14349 if (skip)
0bb2d96a 14350 memset (&outrel, 0, sizeof outrel);
afe397ea 14351 else if (!SYMBOL_REFERENCES_LOCAL (info, &h->elf)
0b13192e
AM		 14352 && !is_opd
14353 && r_type != R_PPC64_TOC)
14acf4dc
MR		 14354 {
14355 BFD_ASSERT (h->elf.dynindx != -1);
14356 outrel.r_info = ELF64_R_INFO (h->elf.dynindx, r_type);
14357 }
65f38f15
AM		 14358 else
14359 {
41bd81ab
AM		 14360 /* This symbol is local, or marked to become local,
14361 or this is an opd section reloc which must point
14362 at a local function. */
65f38f15 14363 outrel.r_addend += relocation;
e86ce104 14364 if (r_type == R_PPC64_ADDR64 || r_type == R_PPC64_TOC)
65f38f15 14365 {
3fad3c7c 14366 if (is_opd && h != NULL)
afbe61cf
AM		 14367 {
14368 /* Lie about opd entries. This case occurs
14369 when building shared libraries and we
14370 reference a function in another shared
3fad3c7c
AM		 14371 lib. The same thing happens for a weak
14372 definition in an application that's
14373 overridden by a strong definition in a
14374 shared lib. (I believe this is a generic
14375 bug in binutils handling of weak syms.)
14376 In these cases we won't use the opd
1e2f5b6e 14377 entry in this lib. */
b34976b6 14378 unresolved_reloc = FALSE;
afbe61cf 14379 }
25f23106
AM		 14380 if (!is_opd
14381 && r_type == R_PPC64_ADDR64
14382 && (h != NULL
14383 ? h->elf.type == STT_GNU_IFUNC
14384 : ELF_ST_TYPE (sym->st_info) == STT_GNU_IFUNC))
14385 outrel.r_info = ELF64_R_INFO (0, R_PPC64_IRELATIVE);
14386 else
14387 {
14388 outrel.r_info = ELF64_R_INFO (0, R_PPC64_RELATIVE);
81407a69 14389
25f23106
AM		 14390 /* We need to relocate .opd contents for ld.so.
14391 Prelink also wants simple and consistent rules
14392 for relocs. This make all RELATIVE relocs have
14393 *r_offset equal to r_addend. */
14394 relocate = TRUE;
14395 }
65f38f15
AM		 14396 }
14397 else
14398 {
14399 long indx = 0;
14400
25f23106
AM		 14401 if (h != NULL
14402 ? h->elf.type == STT_GNU_IFUNC
14403 : ELF_ST_TYPE (sym->st_info) == STT_GNU_IFUNC)
14404 {
25f53a85 14405 info->callbacks->einfo
bc30df16
AM		 14406 (_("%P: %H: %s for indirect "
14407 "function `%T' unsupported\n"),
25f53a85 14408 input_bfd, input_section, rel->r_offset,
25f23106
AM		 14409 ppc64_elf_howto_table[r_type]->name,
14410 sym_name);
14411 ret = FALSE;
14412 }
cf35638d 14413 else if (r_symndx == STN_UNDEF || bfd_is_abs_section (sec))
65f38f15
AM		 14414 ;
14415 else if (sec == NULL || sec->owner == NULL)
14416 {
14417 bfd_set_error (bfd_error_bad_value);
b34976b6 14418 return FALSE;
65f38f15
AM		 14419 }
14420 else
14421 {
14422 asection *osec;
14423
14424 osec = sec->output_section;
14425 indx = elf_section_data (osec)->dynindx;
14426
74541ad4
AM		 14427 if (indx == 0)
14428 {
14429 if ((osec->flags & SEC_READONLY) == 0
14430 && htab->elf.data_index_section != NULL)
14431 osec = htab->elf.data_index_section;
14432 else
14433 osec = htab->elf.text_index_section;
14434 indx = elf_section_data (osec)->dynindx;
14435 }
14436 BFD_ASSERT (indx != 0);
14437
65f38f15
AM		 14438 /* We are turning this relocation into one
14439 against a section symbol, so subtract out
14440 the output section's address but not the
14441 offset of the input section in the output
14442 section. */
14443 outrel.r_addend -= osec->vma;
14444 }
14445
14446 outrel.r_info = ELF64_R_INFO (indx, r_type);
14447 }
14448 }
14449
14450 sreloc = elf_section_data (input_section)->sreloc;
19e08130
AM		 14451 if (h != NULL
14452 ? h->elf.type == STT_GNU_IFUNC
14453 : ELF_ST_TYPE (sym->st_info) == STT_GNU_IFUNC)
33e44f2e 14454 sreloc = htab->elf.irelplt;
65f38f15
AM		 14455 if (sreloc == NULL)
14456 abort ();
14457
dfbb6ac9
AM		 14458 if (sreloc->reloc_count * sizeof (Elf64_External_Rela)
14459 >= sreloc->size)
14460 abort ();
947216bf
AM		 14461 loc = sreloc->contents;
14462 loc += sreloc->reloc_count++ * sizeof (Elf64_External_Rela);
65f38f15
AM		 14463 bfd_elf64_swap_reloca_out (output_bfd, &outrel, loc);
14464
14465 /* If this reloc is against an external symbol, it will
14466 be computed at runtime, so there's no need to do
81407a69
AM		 14467 anything now. However, for the sake of prelink ensure
14468 that the section contents are a known value. */
65f38f15 14469 if (! relocate)
81407a69
AM		 14470 {
14471 unresolved_reloc = FALSE;
14472 /* The value chosen here is quite arbitrary as ld.so
14473 ignores section contents except for the special
14474 case of .opd where the contents might be accessed
14475 before relocation. Choose zero, as that won't
14476 cause reloc overflow. */
14477 relocation = 0;
14478 addend = 0;
14479 /* Use *r_offset == r_addend for R_PPC64_ADDR64 relocs
14480 to improve backward compatibility with older
14481 versions of ld. */
14482 if (r_type == R_PPC64_ADDR64)
14483 addend = outrel.r_addend;
14484 /* Adjust pc_relative relocs to have zero in *r_offset. */
4ce794b7 14485 else if (ppc64_elf_howto_table[r_type]->pc_relative)
000732f7
AM		 14486 addend = (input_section->output_section->vma
14487 + input_section->output_offset
14488 + rel->r_offset);
81407a69 14489 }
65f38f15 14490 }
5bd4f169
AM		 14491 break;
14492
65f38f15
AM		 14493 case R_PPC64_COPY:
14494 case R_PPC64_GLOB_DAT:
14495 case R_PPC64_JMP_SLOT:
25f23106 14496 case R_PPC64_JMP_IREL:
65f38f15
AM		 14497 case R_PPC64_RELATIVE:
14498 /* We shouldn't ever see these dynamic relocs in relocatable
14499 files. */
ae9a127f 14500 /* Fall through. */
65f38f15
AM		 14501
14502 case R_PPC64_PLTGOT16:
14503 case R_PPC64_PLTGOT16_DS:
14504 case R_PPC64_PLTGOT16_HA:
14505 case R_PPC64_PLTGOT16_HI:
14506 case R_PPC64_PLTGOT16_LO:
14507 case R_PPC64_PLTGOT16_LO_DS:
14508 case R_PPC64_PLTREL32:
14509 case R_PPC64_PLTREL64:
14510 /* These ones haven't been implemented yet. */
14511
25f53a85 14512 info->callbacks->einfo
bc30df16 14513 (_("%P: %B: %s is not supported for `%T'\n"),
d003868e 14514 input_bfd,
4ce794b7 14515 ppc64_elf_howto_table[r_type]->name, sym_name);
5bd4f169
AM		 14516
14517 bfd_set_error (bfd_error_invalid_operation);
b34976b6 14518 ret = FALSE;
5bd4f169 14519 continue;
65f38f15 14520 }
5bd4f169 14521
67f0cbdb
AM		 14522 /* Multi-instruction sequences that access the TOC can be
14523 optimized, eg. addis ra,r2,0; addi rb,ra,x;
14524 to nop; addi rb,r2,x; */
14525 switch (r_type)
14526 {
14527 default:
14528 break;
14529
14530 case R_PPC64_GOT_TLSLD16_HI:
14531 case R_PPC64_GOT_TLSGD16_HI:
14532 case R_PPC64_GOT_TPREL16_HI:
14533 case R_PPC64_GOT_DTPREL16_HI:
14534 case R_PPC64_GOT16_HI:
14535 case R_PPC64_TOC16_HI:
14536 /* These relocs would only be useful if building up an
14537 offset to later add to r2, perhaps in an indexed
14538 addressing mode instruction. Don't try to optimize.
14539 Unfortunately, the possibility of someone building up an
14540 offset like this or even with the HA relocs, means that
14541 we need to check the high insn when optimizing the low
14542 insn. */
14543 break;
14544
14545 case R_PPC64_GOT_TLSLD16_HA:
14546 case R_PPC64_GOT_TLSGD16_HA:
14547 case R_PPC64_GOT_TPREL16_HA:
14548 case R_PPC64_GOT_DTPREL16_HA:
14549 case R_PPC64_GOT16_HA:
14550 case R_PPC64_TOC16_HA:
98528052 14551 if (htab->do_toc_opt && relocation + addend + 0x8000 < 0x10000
560c8763 14552 && !ppc64_elf_tdata (input_bfd)->unexpected_toc_insn)
98528052
AM		 14553 {
14554 bfd_byte *p = contents + (rel->r_offset & ~3);
14555 bfd_put_32 (input_bfd, NOP, p);
14556 }
67f0cbdb
AM		 14557 break;
14558
14559 case R_PPC64_GOT_TLSLD16_LO:
14560 case R_PPC64_GOT_TLSGD16_LO:
14561 case R_PPC64_GOT_TPREL16_LO_DS:
14562 case R_PPC64_GOT_DTPREL16_LO_DS:
14563 case R_PPC64_GOT16_LO:
14564 case R_PPC64_GOT16_LO_DS:
14565 case R_PPC64_TOC16_LO:
14566 case R_PPC64_TOC16_LO_DS:
98528052 14567 if (htab->do_toc_opt && relocation + addend + 0x8000 < 0x10000
560c8763 14568 && !ppc64_elf_tdata (input_bfd)->unexpected_toc_insn)
67f0cbdb
AM		 14569 {
14570 bfd_byte *p = contents + (rel->r_offset & ~3);
14571 insn = bfd_get_32 (input_bfd, p);
560c8763
AM		 14572 if ((insn & (0x3f << 26)) == 12u << 26 /* addic */)
14573 {
14574 /* Transform addic to addi when we change reg. */
14575 insn &= ~((0x3f << 26) | (0x1f << 16));
14576 insn |= (14u << 26) | (2 << 16);
14577 }
14578 else
67f0cbdb 14579 {
98528052
AM		 14580 insn &= ~(0x1f << 16);
14581 insn |= 2 << 16;
67f0cbdb 14582 }
560c8763 14583 bfd_put_32 (input_bfd, insn, p);
67f0cbdb
AM		 14584 }
14585 break;
14586 }
14587
65f38f15 14588 /* Do any further special processing. */
b80eed39 14589 howto = ppc64_elf_howto_table[(int) r_type];
65f38f15
AM		 14590 switch (r_type)
14591 {
14592 default:
14593 break;
14594
25f23106 14595 case R_PPC64_REL16_HA:
f9c6b907
AM		 14596 case R_PPC64_ADDR16_HA:
14597 case R_PPC64_ADDR16_HIGHA:
65f38f15
AM		 14598 case R_PPC64_ADDR16_HIGHERA:
14599 case R_PPC64_ADDR16_HIGHESTA:
65f38f15
AM		 14600 case R_PPC64_TOC16_HA:
14601 case R_PPC64_SECTOFF_HA:
411e1bfb 14602 case R_PPC64_TPREL16_HA:
f9c6b907 14603 case R_PPC64_TPREL16_HIGHA:
411e1bfb 14604 case R_PPC64_TPREL16_HIGHERA:
411e1bfb 14605 case R_PPC64_TPREL16_HIGHESTA:
f9c6b907
AM		 14606 case R_PPC64_DTPREL16_HA:
14607 case R_PPC64_DTPREL16_HIGHA:
411e1bfb 14608 case R_PPC64_DTPREL16_HIGHERA:
411e1bfb 14609 case R_PPC64_DTPREL16_HIGHESTA:
65f38f15
AM		 14610 /* It's just possible that this symbol is a weak symbol
14611 that's not actually defined anywhere. In that case,
14612 'sec' would be NULL, and we should leave the symbol
14613 alone (it will be set to zero elsewhere in the link). */
5c5f6e17
AM		 14614 if (sec == NULL)
14615 break;
14616 /* Fall thru */
14617
14618 case R_PPC64_GOT16_HA:
14619 case R_PPC64_PLTGOT16_HA:
14620 case R_PPC64_PLT16_HA:
14621 case R_PPC64_GOT_TLSGD16_HA:
14622 case R_PPC64_GOT_TLSLD16_HA:
14623 case R_PPC64_GOT_TPREL16_HA:
14624 case R_PPC64_GOT_DTPREL16_HA:
14625 /* Add 0x10000 if sign bit in 0:15 is set.
14626 Bits 0:15 are not used. */
14627 addend += 0x8000;
65f38f15
AM		 14628 break;
14629
14630 case R_PPC64_ADDR16_DS:
14631 case R_PPC64_ADDR16_LO_DS:
14632 case R_PPC64_GOT16_DS:
14633 case R_PPC64_GOT16_LO_DS:
14634 case R_PPC64_PLT16_LO_DS:
14635 case R_PPC64_SECTOFF_DS:
14636 case R_PPC64_SECTOFF_LO_DS:
14637 case R_PPC64_TOC16_DS:
14638 case R_PPC64_TOC16_LO_DS:
14639 case R_PPC64_PLTGOT16_DS:
14640 case R_PPC64_PLTGOT16_LO_DS:
411e1bfb
AM		 14641 case R_PPC64_GOT_TPREL16_DS:
14642 case R_PPC64_GOT_TPREL16_LO_DS:
14643 case R_PPC64_GOT_DTPREL16_DS:
14644 case R_PPC64_GOT_DTPREL16_LO_DS:
14645 case R_PPC64_TPREL16_DS:
14646 case R_PPC64_TPREL16_LO_DS:
14647 case R_PPC64_DTPREL16_DS:
14648 case R_PPC64_DTPREL16_LO_DS:
adadcc0c
AM		 14649 insn = bfd_get_32 (input_bfd, contents + (rel->r_offset & ~3));
14650 mask = 3;
14651 /* If this reloc is against an lq insn, then the value must be
14652 a multiple of 16. This is somewhat of a hack, but the
14653 "correct" way to do this by defining _DQ forms of all the
14654 _DS relocs bloats all reloc switches in this file. It
14655 doesn't seem to make much sense to use any of these relocs
14656 in data, so testing the insn should be safe. */
494dac0c 14657 if ((insn & (0x3f << 26)) == (56u << 26))
adadcc0c
AM		 14658 mask = 15;
14659 if (((relocation + addend) & mask) != 0)
65f38f15 14660 {
25f53a85 14661 info->callbacks->einfo
8de848d8 14662 (_("%P: %H: error: %s not a multiple of %u\n"),
25f53a85 14663 input_bfd, input_section, rel->r_offset,
b80eed39 14664 howto->name,
adadcc0c 14665 mask + 1);
65f38f15 14666 bfd_set_error (bfd_error_bad_value);
b34976b6 14667 ret = FALSE;
65f38f15
AM		 14668 continue;
14669 }
14670 break;
5bd4f169
AM		 14671 }
14672
239e1f3a
AM		 14673 /* Dynamic relocs are not propagated for SEC_DEBUGGING sections
14674 because such sections are not SEC_ALLOC and thus ld.so will
14675 not process them. */
65f38f15 14676 if (unresolved_reloc
239e1f3a 14677 && !((input_section->flags & SEC_DEBUGGING) != 0
1d5316ab
AM		 14678 && h->elf.def_dynamic)
14679 && _bfd_elf_section_offset (output_bfd, info, input_section,
14680 rel->r_offset) != (bfd_vma) -1)
9c07fe7c 14681 {
25f53a85 14682 info->callbacks->einfo
bc30df16 14683 (_("%P: %H: unresolvable %s against `%T'\n"),
25f53a85 14684 input_bfd, input_section, rel->r_offset,
b80eed39 14685 howto->name,
039b3fef 14686 h->elf.root.root.string);
b34976b6 14687 ret = FALSE;
9c07fe7c 14688 }
5bd4f169 14689
b80eed39
AM		 14690 /* 16-bit fields in insns mostly have signed values, but a
14691 few insns have 16-bit unsigned values. Really, we should
14692 have different reloc types. */
14693 if (howto->complain_on_overflow != complain_overflow_dont
14694 && howto->dst_mask == 0xffff
14695 && (input_section->flags & SEC_CODE) != 0)
14696 {
14697 enum complain_overflow complain = complain_overflow_signed;
14698
14699 insn = bfd_get_32 (input_bfd, contents + (rel->r_offset & ~3));
a47622ac
AM		 14700 if ((insn & (0x3f << 26)) == 10u << 26 /* cmpli */)
14701 complain = complain_overflow_bitfield;
14702 else if (howto->rightshift == 0
14703 ? ((insn & (0x3f << 26)) == 28u << 26 /* andi */
14704 || (insn & (0x3f << 26)) == 24u << 26 /* ori */
14705 || (insn & (0x3f << 26)) == 26u << 26 /* xori */)
14706 : ((insn & (0x3f << 26)) == 29u << 26 /* andis */
14707 || (insn & (0x3f << 26)) == 25u << 26 /* oris */
14708 || (insn & (0x3f << 26)) == 27u << 26 /* xoris */))
b80eed39
AM		 14709 complain = complain_overflow_unsigned;
14710 if (howto->complain_on_overflow != complain)
14711 {
14712 alt_howto = *howto;
14713 alt_howto.complain_on_overflow = complain;
14714 howto = &alt_howto;
14715 }
14716 }
14717
14718 r = _bfd_final_link_relocate (howto, input_bfd, input_section, contents,
14719 rel->r_offset, relocation, addend);
5bd4f169 14720
ef60b7ff 14721 if (r != bfd_reloc_ok)
5bd4f169 14722 {
bc30df16 14723 char *more_info = NULL;
b80eed39 14724 const char *reloc_name = howto->name;
bc30df16
AM		 14725
14726 if (reloc_dest != DEST_NORMAL)
14727 {
14728 more_info = bfd_malloc (strlen (reloc_name) + 8);
14729 if (more_info != NULL)
14730 {
14731 strcpy (more_info, reloc_name);
14732 strcat (more_info, (reloc_dest == DEST_OPD
14733 ? " (OPD)" : " (stub)"));
14734 reloc_name = more_info;
14735 }
14736 }
14737
cd27b276 14738 if (r == bfd_reloc_overflow)
5bd4f169 14739 {
cd27b276
AM		 14740 if (warned)
14741 continue;
14742 if (h != NULL
039b3fef 14743 && h->elf.root.type == bfd_link_hash_undefweak
b80eed39 14744 && howto->pc_relative)
5bd4f169
AM		 14745 {
14746 /* Assume this is a call protected by other code that
14747 detects the symbol is undefined. If this is the case,
14748 we can safely ignore the overflow. If not, the
14749 program is hosed anyway, and a little warning isn't
14750 going to help. */
14751
14752 continue;
14753 }
14754
ef60b7ff 14755 if (!((*info->callbacks->reloc_overflow)
bc30df16
AM		 14756 (info, &h->elf.root, sym_name,
14757 reloc_name, orig_rel.r_addend,
14758 input_bfd, input_section, rel->r_offset)))
b34976b6 14759 return FALSE;
ef60b7ff
AM		 14760 }
14761 else
14762 {
25f53a85 14763 info->callbacks->einfo
bc30df16 14764 (_("%P: %H: %s against `%T': error %d\n"),
25f53a85 14765 input_bfd, input_section, rel->r_offset,
bc30df16 14766 reloc_name, sym_name, (int) r);
b34976b6 14767 ret = FALSE;
ef60b7ff 14768 }
bc30df16
AM		 14769 if (more_info != NULL)
14770 free (more_info);
5bd4f169 14771 }
5bd4f169
AM		 14772 }
14773
645ea6a9
AM		 14774 /* If we're emitting relocations, then shortly after this function
14775 returns, reloc offsets and addends for this section will be
14776 adjusted. Worse, reloc symbol indices will be for the output
8860955f
AM		 14777 file rather than the input. Save a copy of the relocs for
14778 opd_entry_value. */
4cc603a5 14779 if (is_opd && (info->emitrelocations || info->relocatable))
8860955f
AM		 14780 {
14781 bfd_size_type amt;
14782 amt = input_section->reloc_count * sizeof (Elf_Internal_Rela);
14783 rel = bfd_alloc (input_bfd, amt);
729eabd5
AM		 14784 BFD_ASSERT (ppc64_elf_tdata (input_bfd)->opd.relocs == NULL);
14785 ppc64_elf_tdata (input_bfd)->opd.relocs = rel;
8860955f
AM		 14786 if (rel == NULL)
14787 return FALSE;
14788 memcpy (rel, relocs, amt);
14789 }
5bd4f169
AM		 14790 return ret;
14791}
14792
754021d0
AM		 14793/* Adjust the value of any local symbols in opd sections. */
14794
6e0b88f1 14795static int
754021d0
AM		 14796ppc64_elf_output_symbol_hook (struct bfd_link_info *info,
14797 const char *name ATTRIBUTE_UNUSED,
14798 Elf_Internal_Sym *elfsym,
14799 asection *input_sec,
14800 struct elf_link_hash_entry *h)
14801{
74f0fb50
AM		 14802 struct _opd_sec_data *opd;
14803 long adjust;
754021d0
AM		 14804 bfd_vma value;
14805
4025353c 14806 if (h != NULL)
6e0b88f1 14807 return 1;
4025353c 14808
74f0fb50
AM		 14809 opd = get_opd_info (input_sec);
14810 if (opd == NULL || opd->adjust == NULL)
6e0b88f1 14811 return 1;
754021d0
AM		 14812
14813 value = elfsym->st_value - input_sec->output_offset;
14814 if (!info->relocatable)
14815 value -= input_sec->output_section->vma;
14816
74f0fb50 14817 adjust = opd->adjust[value / 8];
4025353c 14818 if (adjust == -1)
6e0b88f1
AM		 14819 return 2;
14820
14821 elfsym->st_value += adjust;
14822 return 1;
754021d0
AM		 14823}
14824
5bd4f169
AM		 14825/* Finish up dynamic symbol handling. We set the contents of various
14826 dynamic sections here. */
14827
b34976b6 14828static bfd_boolean
4ce794b7
AM		 14829ppc64_elf_finish_dynamic_symbol (bfd *output_bfd,
14830 struct bfd_link_info *info,
14831 struct elf_link_hash_entry *h,
ab6dce23 14832 Elf_Internal_Sym *sym ATTRIBUTE_UNUSED)
5bd4f169 14833{
65f38f15 14834 struct ppc_link_hash_table *htab;
8387904d
AM		 14835 struct plt_entry *ent;
14836 Elf_Internal_Rela rela;
14837 bfd_byte *loc;
5bd4f169 14838
65f38f15 14839 htab = ppc_hash_table (info);
4dfe6ac6
NC		 14840 if (htab == NULL)
14841 return FALSE;
5bd4f169 14842
8387904d
AM		 14843 for (ent = h->plt.plist; ent != NULL; ent = ent->next)
14844 if (ent->plt.offset != (bfd_vma) -1)
14845 {
14846 /* This symbol has an entry in the procedure linkage
14847 table. Set it up. */
e054468f
AM		 14848 if (!htab->elf.dynamic_sections_created
14849 || h->dynindx == -1)
14850 {
14851 BFD_ASSERT (h->type == STT_GNU_IFUNC
14852 && h->def_regular
14853 && (h->root.type == bfd_link_hash_defined
14854 || h->root.type == bfd_link_hash_defweak));
33e44f2e
AM		 14855 rela.r_offset = (htab->elf.iplt->output_section->vma
14856 + htab->elf.iplt->output_offset
25f23106 14857 + ent->plt.offset);
ee67d69a
AM		 14858 if (htab->opd_abi)
14859 rela.r_info = ELF64_R_INFO (0, R_PPC64_JMP_IREL);
14860 else
14861 rela.r_info = ELF64_R_INFO (0, R_PPC64_IRELATIVE);
e054468f
AM		 14862 rela.r_addend = (h->root.u.def.value
14863 + h->root.u.def.section->output_offset
14864 + h->root.u.def.section->output_section->vma
14865 + ent->addend);
33e44f2e
AM		 14866 loc = (htab->elf.irelplt->contents
14867 + (htab->elf.irelplt->reloc_count++
25f23106 14868 * sizeof (Elf64_External_Rela)));
e054468f
AM		 14869 }
14870 else
14871 {
33e44f2e
AM		 14872 rela.r_offset = (htab->elf.splt->output_section->vma
14873 + htab->elf.splt->output_offset
25f23106 14874 + ent->plt.offset);
e054468f
AM		 14875 rela.r_info = ELF64_R_INFO (h->dynindx, R_PPC64_JMP_SLOT);
14876 rela.r_addend = ent->addend;
33e44f2e 14877 loc = (htab->elf.srelplt->contents
b9e5796b
AM		 14878 + ((ent->plt.offset - PLT_INITIAL_ENTRY_SIZE (htab))
14879 / PLT_ENTRY_SIZE (htab) * sizeof (Elf64_External_Rela)));
e054468f 14880 }
8387904d 14881 bfd_elf64_swap_reloca_out (output_bfd, &rela, loc);
a345bc8d
AM		 14882
14883 if (!htab->opd_abi)
14884 {
14885 if (!h->def_regular)
14886 {
14887 /* Mark the symbol as undefined, rather than as
14888 defined in glink. Leave the value if there were
14889 any relocations where pointer equality matters
14890 (this is a clue for the dynamic linker, to make
14891 function pointer comparisons work between an
14892 application and shared library), otherwise set it
14893 to zero. */
14894 sym->st_shndx = SHN_UNDEF;
14895 if (!h->pointer_equality_needed)
14896 sym->st_value = 0;
14897 else if (!h->ref_regular_nonweak)
14898 {
14899 /* This breaks function pointer comparisons, but
14900 that is better than breaking tests for a NULL
14901 function pointer. */
14902 sym->st_value = 0;
14903 }
14904 }
14905 }
8387904d 14906 }
5bd4f169 14907
f5385ebf 14908 if (h->needs_copy)
5bd4f169 14909 {
65f38f15 14910 /* This symbol needs a copy reloc. Set it up. */
5bd4f169 14911
65f38f15
AM		 14912 if (h->dynindx == -1
14913 || (h->root.type != bfd_link_hash_defined
14914 && h->root.type != bfd_link_hash_defweak)
4ce794b7 14915 || htab->relbss == NULL)
65f38f15 14916 abort ();
5bd4f169
AM		 14917
14918 rela.r_offset = (h->root.u.def.value
14919 + h->root.u.def.section->output_section->vma
14920 + h->root.u.def.section->output_offset);
14921 rela.r_info = ELF64_R_INFO (h->dynindx, R_PPC64_COPY);
14922 rela.r_addend = 0;
4ce794b7
AM		 14923 loc = htab->relbss->contents;
14924 loc += htab->relbss->reloc_count++ * sizeof (Elf64_External_Rela);
65f38f15 14925 bfd_elf64_swap_reloca_out (output_bfd, &rela, loc);
5bd4f169
AM		 14926 }
14927
b34976b6 14928 return TRUE;
5bd4f169
AM		 14929}
14930
65f38f15
AM		 14931/* Used to decide how to sort relocs in an optimal manner for the
14932 dynamic linker, before writing them out. */
14933
14934static enum elf_reloc_type_class
7e612e98
AM		 14935ppc64_elf_reloc_type_class (const struct bfd_link_info *info,
14936 const asection *rel_sec,
14937 const Elf_Internal_Rela *rela)
65f38f15 14938{
04c9666a 14939 enum elf_ppc64_reloc_type r_type;
7e612e98
AM		 14940 struct ppc_link_hash_table *htab = ppc_hash_table (info);
14941
33e44f2e 14942 if (rel_sec == htab->elf.irelplt)
7e612e98 14943 return reloc_class_ifunc;
a33d1f77 14944
4ce794b7 14945 r_type = ELF64_R_TYPE (rela->r_info);
a33d1f77 14946 switch (r_type)
65f38f15
AM		 14947 {
14948 case R_PPC64_RELATIVE:
14949 return reloc_class_relative;
14950 case R_PPC64_JMP_SLOT:
14951 return reloc_class_plt;
14952 case R_PPC64_COPY:
14953 return reloc_class_copy;
14954 default:
14955 return reloc_class_normal;
14956 }
14957}
14958
5bd4f169
AM		 14959/* Finish up the dynamic sections. */
14960
b34976b6 14961static bfd_boolean
4ce794b7
AM		 14962ppc64_elf_finish_dynamic_sections (bfd *output_bfd,
14963 struct bfd_link_info *info)
5bd4f169 14964{
65f38f15
AM		 14965 struct ppc_link_hash_table *htab;
14966 bfd *dynobj;
5bd4f169 14967 asection *sdyn;
5bd4f169 14968
65f38f15 14969 htab = ppc_hash_table (info);
4dfe6ac6
NC		 14970 if (htab == NULL)
14971 return FALSE;
14972
65f38f15 14973 dynobj = htab->elf.dynobj;
3d4d4302 14974 sdyn = bfd_get_linker_section (dynobj, ".dynamic");
5bd4f169 14975
65f38f15 14976 if (htab->elf.dynamic_sections_created)
5bd4f169 14977 {
5bd4f169
AM		 14978 Elf64_External_Dyn *dyncon, *dynconend;
14979
33e44f2e 14980 if (sdyn == NULL || htab->elf.sgot == NULL)
65f38f15 14981 abort ();
5bd4f169
AM		 14982
14983 dyncon = (Elf64_External_Dyn *) sdyn->contents;
eea6121a 14984 dynconend = (Elf64_External_Dyn *) (sdyn->contents + sdyn->size);
5bd4f169
AM		 14985 for (; dyncon < dynconend; dyncon++)
14986 {
14987 Elf_Internal_Dyn dyn;
19397422 14988 asection *s;
5bd4f169
AM		 14989
14990 bfd_elf64_swap_dyn_in (dynobj, dyncon, &dyn);
14991
14992 switch (dyn.d_tag)
14993 {
65f38f15
AM		 14994 default:
14995 continue;
5bd4f169 14996
5d1634d7 14997 case DT_PPC64_GLINK:
4ce794b7 14998 s = htab->glink;
6348e046 14999 dyn.d_un.d_ptr = s->output_section->vma + s->output_offset;
ad8e1ba5
AM		 15000 /* We stupidly defined DT_PPC64_GLINK to be the start
15001 of glink rather than the first entry point, which is
15002 what ld.so needs, and now have a bigger stub to
15003 support automatic multiple TOCs. */
b9e5796b 15004 dyn.d_un.d_ptr += GLINK_CALL_STUB_SIZE - 8 * 4;
5d1634d7
AM		 15005 break;
15006
19397422
AM		 15007 case DT_PPC64_OPD:
15008 s = bfd_get_section_by_name (output_bfd, ".opd");
6348e046
AM		 15009 if (s == NULL)
15010 continue;
15011 dyn.d_un.d_ptr = s->vma;
19397422
AM		 15012 break;
15013
e8910a83
AM		 15014 case DT_PPC64_OPT:
15015 if (htab->do_multi_toc && htab->multi_toc_needed)
15016 dyn.d_un.d_val |= PPC64_OPT_MULTI_TOC;
15017 break;
15018
19397422
AM		 15019 case DT_PPC64_OPDSZ:
15020 s = bfd_get_section_by_name (output_bfd, ".opd");
6348e046
AM		 15021 if (s == NULL)
15022 continue;
eea6121a 15023 dyn.d_un.d_val = s->size;
19397422
AM		 15024 break;
15025
65f38f15 15026 case DT_PLTGOT:
33e44f2e 15027 s = htab->elf.splt;
6348e046 15028 dyn.d_un.d_ptr = s->output_section->vma + s->output_offset;
65f38f15
AM		 15029 break;
15030
15031 case DT_JMPREL:
33e44f2e 15032 s = htab->elf.srelplt;
6348e046 15033 dyn.d_un.d_ptr = s->output_section->vma + s->output_offset;
65f38f15 15034 break;
5bd4f169 15035
65f38f15 15036 case DT_PLTRELSZ:
33e44f2e 15037 dyn.d_un.d_val = htab->elf.srelplt->size;
5d1634d7
AM		 15038 break;
15039
15040 case DT_RELASZ:
15041 /* Don't count procedure linkage table relocs in the
15042 overall reloc count. */
33e44f2e 15043 s = htab->elf.srelplt;
6348e046
AM		 15044 if (s == NULL)
15045 continue;
eea6121a 15046 dyn.d_un.d_val -= s->size;
6348e046
AM		 15047 break;
15048
15049 case DT_RELA:
15050 /* We may not be using the standard ELF linker script.
15051 If .rela.plt is the first .rela section, we adjust
15052 DT_RELA to not include it. */
33e44f2e 15053 s = htab->elf.srelplt;
6348e046
AM		 15054 if (s == NULL)
15055 continue;
15056 if (dyn.d_un.d_ptr != s->output_section->vma + s->output_offset)
15057 continue;
eea6121a 15058 dyn.d_un.d_ptr += s->size;
65f38f15 15059 break;
5bd4f169 15060 }
5bd4f169 15061
65f38f15 15062 bfd_elf64_swap_dyn_out (output_bfd, &dyn, dyncon);
5bd4f169 15063 }
5bd4f169
AM		 15064 }
15065
33e44f2e 15066 if (htab->elf.sgot != NULL && htab->elf.sgot->size != 0)
5d1634d7
AM		 15067 {
15068 /* Fill in the first entry in the global offset table.
15069 We use it to hold the link-time TOCbase. */
15070 bfd_put_64 (output_bfd,
60ee0d4a 15071 elf_gp (output_bfd) + TOC_BASE_OFF,
33e44f2e 15072 htab->elf.sgot->contents);
5d1634d7
AM		 15073
15074 /* Set .got entry size. */
33e44f2e 15075 elf_section_data (htab->elf.sgot->output_section)->this_hdr.sh_entsize = 8;
5d1634d7
AM		 15076 }
15077
33e44f2e 15078 if (htab->elf.splt != NULL && htab->elf.splt->size != 0)
5d1634d7
AM		 15079 {
15080 /* Set .plt entry size. */
33e44f2e 15081 elf_section_data (htab->elf.splt->output_section)->this_hdr.sh_entsize
b9e5796b 15082 = PLT_ENTRY_SIZE (htab);
5d1634d7
AM		 15083 }
15084
84f5d08e
AM		 15085 /* brlt is SEC_LINKER_CREATED, so we need to write out relocs for
15086 brlt ourselves if emitrelocations. */
15087 if (htab->brlt != NULL
15088 && htab->brlt->reloc_count != 0
15089 && !_bfd_elf_link_output_relocs (output_bfd,
15090 htab->brlt,
d4730f92 15091 elf_section_data (htab->brlt)->rela.hdr,
84f5d08e
AM		 15092 elf_section_data (htab->brlt)->relocs,
15093 NULL))
15094 return FALSE;
15095
176a0d42
AM		 15096 if (htab->glink != NULL
15097 && htab->glink->reloc_count != 0
15098 && !_bfd_elf_link_output_relocs (output_bfd,
15099 htab->glink,
d4730f92 15100 elf_section_data (htab->glink)->rela.hdr,
176a0d42
AM		 15101 elf_section_data (htab->glink)->relocs,
15102 NULL))
15103 return FALSE;
15104
58d180e8 15105 if (htab->glink_eh_frame != NULL
da44f4e5
AM		 15106 && htab->glink_eh_frame->size != 0)
15107 {
15108 bfd_vma val;
15109 bfd_byte *p;
15110 asection *stub_sec;
15111
15112 p = htab->glink_eh_frame->contents + sizeof (glink_eh_frame_cie);
15113 for (stub_sec = htab->params->stub_bfd->sections;
15114 stub_sec != NULL;
15115 stub_sec = stub_sec->next)
15116 if ((stub_sec->flags & SEC_LINKER_CREATED) == 0)
15117 {
15118 /* FDE length. */
15119 p += 4;
15120 /* CIE pointer. */
15121 p += 4;
15122 /* Offset to stub section. */
15123 val = (stub_sec->output_section->vma
15124 + stub_sec->output_offset);
15125 val -= (htab->glink_eh_frame->output_section->vma
15126 + htab->glink_eh_frame->output_offset
15127 + (p - htab->glink_eh_frame->contents));
15128 if (val + 0x80000000 > 0xffffffff)
15129 {
15130 info->callbacks->einfo
15131 (_("%P: %s offset too large for .eh_frame sdata4 encoding"),
15132 stub_sec->name);
15133 return FALSE;
15134 }
15135 bfd_put_32 (dynobj, val, p);
15136 p += 4;
15137 /* stub section size. */
15138 p += 4;
15139 /* Augmentation. */
15140 p += 1;
15141 /* Pad. */
15142 p += 7;
15143 }
15144 if (htab->glink != NULL && htab->glink->size != 0)
15145 {
15146 /* FDE length. */
15147 p += 4;
15148 /* CIE pointer. */
15149 p += 4;
15150 /* Offset to .glink. */
15151 val = (htab->glink->output_section->vma
15152 + htab->glink->output_offset
15153 + 8);
15154 val -= (htab->glink_eh_frame->output_section->vma
15155 + htab->glink_eh_frame->output_offset
15156 + (p - htab->glink_eh_frame->contents));
15157 if (val + 0x80000000 > 0xffffffff)
15158 {
15159 info->callbacks->einfo
15160 (_("%P: %s offset too large for .eh_frame sdata4 encoding"),
15161 htab->glink->name);
15162 return FALSE;
15163 }
15164 bfd_put_32 (dynobj, val, p);
15165 p += 4;
15166 /* .glink size. */
15167 p += 4;
15168 /* Augmentation. */
15169 p += 1;
15170 /* Ops. */
15171 p += 7;
15172 }
15173
15174 if (htab->glink_eh_frame->sec_info_type == SEC_INFO_TYPE_EH_FRAME
15175 && !_bfd_elf_write_section_eh_frame (output_bfd, info,
15176 htab->glink_eh_frame,
15177 htab->glink_eh_frame->contents))
15178 return FALSE;
15179 }
58d180e8 15180
e717da7e 15181 /* We need to handle writing out multiple GOT sections ourselves,
7b53ace3
AM		 15182 since we didn't add them to DYNOBJ. We know dynobj is the first
15183 bfd. */
c72f2fb2 15184 while ((dynobj = dynobj->link.next) != NULL)
e717da7e
AM		 15185 {
15186 asection *s;
7b53ace3 15187
0c8d6e5c 15188 if (!is_ppc64_elf (dynobj))
7b53ace3
AM		 15189 continue;
15190
e717da7e
AM		 15191 s = ppc64_elf_tdata (dynobj)->got;
15192 if (s != NULL
eea6121a 15193 && s->size != 0
e717da7e
AM		 15194 && s->output_section != bfd_abs_section_ptr
15195 && !bfd_set_section_contents (output_bfd, s->output_section,
15196 s->contents, s->output_offset,
eea6121a 15197 s->size))
e717da7e
AM		 15198 return FALSE;
15199 s = ppc64_elf_tdata (dynobj)->relgot;
15200 if (s != NULL
eea6121a 15201 && s->size != 0
e717da7e
AM		 15202 && s->output_section != bfd_abs_section_ptr
15203 && !bfd_set_section_contents (output_bfd, s->output_section,
15204 s->contents, s->output_offset,
eea6121a 15205 s->size))
e717da7e
AM		 15206 return FALSE;
15207 }
f6c52c13 15208
b34976b6 15209 return TRUE;
5bd4f169
AM		 15210}
15211
5bd4f169 15212#include "elf64-target.h"
7b8e7dad
AM		 15213
15214/* FreeBSD support */
15215
15216#undef TARGET_LITTLE_SYM
15217#undef TARGET_LITTLE_NAME
15218
15219#undef TARGET_BIG_SYM
6d00b590 15220#define TARGET_BIG_SYM powerpc_elf64_fbsd_vec
7b8e7dad
AM		 15221#undef TARGET_BIG_NAME
15222#define TARGET_BIG_NAME "elf64-powerpc-freebsd"
15223
15224#undef ELF_OSABI
15225#define ELF_OSABI ELFOSABI_FREEBSD
15226
15227#undef elf64_bed
15228#define elf64_bed elf64_powerpc_fbsd_bed
15229
15230#include "elf64-target.h"
15231
GDB Binutils - Deliverables
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