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Pass link_info to _bfd_merge_private_bfd_data
[deliverable/binutils-gdb.git] / bfd / elf64-ppc.c
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5bd4f169 1/* PowerPC64-specific support for 64-bit ELF.
6f2750fe 2 Copyright (C) 1999-2016 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
04c6a44c 67#define ELF_COMMONPAGESIZE 0x10000
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 140#define TOC_BASE_OFF 0x8000
a27e685f
AM		 141/* TOC base alignment. */
142#define TOC_BASE_ALIGN 256
411e1bfb
AM		 143
144/* Offset of tp and dtp pointers from start of TLS block. */
145#define TP_OFFSET 0x7000
146#define DTP_OFFSET 0x8000
5bd4f169 147
ad8e1ba5
AM		 148/* .plt call stub instructions. The normal stub is like this, but
149 sometimes the .plt entry crosses a 64k boundary and we need to
71a39c98 150 insert an addi to adjust r11. */
a078d95a 151#define STD_R2_0R1 0xf8410000 /* std %r2,0+40(%r1) */
71a39c98
AM		 152#define ADDIS_R11_R2 0x3d620000 /* addis %r11,%r2,xxx@ha */
153#define LD_R12_0R11 0xe98b0000 /* ld %r12,xxx+0@l(%r11) */
154#define MTCTR_R12 0x7d8903a6 /* mtctr %r12 */
155#define LD_R2_0R11 0xe84b0000 /* ld %r2,xxx+8@l(%r11) */
156#define LD_R11_0R11 0xe96b0000 /* ld %r11,xxx+16@l(%r11) */
5d1634d7
AM		 157#define BCTR 0x4e800420 /* bctr */
158
71a39c98 159#define ADDI_R11_R11 0x396b0000 /* addi %r11,%r11,off@l */
ad8e1ba5
AM		 160#define ADDIS_R2_R2 0x3c420000 /* addis %r2,%r2,off@ha */
161#define ADDI_R2_R2 0x38420000 /* addi %r2,%r2,off@l */
162
71a39c98
AM		 163#define XOR_R2_R12_R12 0x7d826278 /* xor %r2,%r12,%r12 */
164#define ADD_R11_R11_R2 0x7d6b1214 /* add %r11,%r11,%r2 */
165#define XOR_R11_R12_R12 0x7d8b6278 /* xor %r11,%r12,%r12 */
794e51c0
AM		 166#define ADD_R2_R2_R11 0x7c425a14 /* add %r2,%r2,%r11 */
167#define CMPLDI_R2_0 0x28220000 /* cmpldi %r2,0 */
168#define BNECTR 0x4ca20420 /* bnectr+ */
169#define BNECTR_P4 0x4ce20420 /* bnectr+ */
170
71a39c98 171#define LD_R12_0R2 0xe9820000 /* ld %r12,xxx+0(%r2) */
ac2df442
AM		 172#define LD_R11_0R2 0xe9620000 /* ld %r11,xxx+0(%r2) */
173#define LD_R2_0R2 0xe8420000 /* ld %r2,xxx+0(%r2) */
174
a078d95a 175#define LD_R2_0R1 0xe8410000 /* ld %r2,0(%r1) */
006589cf
AM		 176#define LD_R2_0R12 0xe84c0000 /* ld %r2,0(%r12) */
177#define ADD_R2_R2_R12 0x7c426214 /* add %r2,%r2,%r12 */
ad8e1ba5 178
006589cf
AM		 179#define LIS_R2 0x3c400000 /* lis %r2,xxx@ha */
180#define ADDIS_R2_R12 0x3c4c0000 /* addis %r2,%r12,xxx@ha */
181#define ADDIS_R12_R2 0x3d820000 /* addis %r12,%r2,xxx@ha */
a345bc8d
AM		 182#define ADDIS_R12_R12 0x3d8c0000 /* addis %r12,%r12,xxx@ha */
183#define LD_R12_0R12 0xe98c0000 /* ld %r12,xxx@l(%r12) */
184
ee4bf8d2 185/* glink call stub instructions. We enter with the index in R0. */
ad8e1ba5 186#define GLINK_CALL_STUB_SIZE (16*4)
ee4bf8d2
AM		 187 /* 0: */
188 /* .quad plt0-1f */
189 /* __glink: */
190#define MFLR_R12 0x7d8802a6 /* mflr %12 */
191#define BCL_20_31 0x429f0005 /* bcl 20,31,1f */
192 /* 1: */
193#define MFLR_R11 0x7d6802a6 /* mflr %11 */
71a39c98 194 /* ld %2,(0b-1b)(%11) */
ee4bf8d2 195#define MTLR_R12 0x7d8803a6 /* mtlr %12 */
71a39c98
AM		 196#define ADD_R11_R2_R11 0x7d625a14 /* add %11,%2,%11 */
197 /* ld %12,0(%11) */
198 /* ld %2,8(%11) */
199 /* mtctr %12 */
200 /* ld %11,16(%11) */
ee4bf8d2 201 /* bctr */
b9e5796b
AM		 202#define MFLR_R0 0x7c0802a6 /* mflr %r0 */
203#define MTLR_R0 0x7c0803a6 /* mtlr %r0 */
204#define SUB_R12_R12_R11 0x7d8b6050 /* subf %r12,%r11,%r12 */
205#define ADDI_R0_R12 0x380c0000 /* addi %r0,%r12,0 */
206#define SRDI_R0_R0_2 0x7800f082 /* rldicl %r0,%r0,62,2 */
5d1634d7
AM		 207
208/* Pad with this. */
209#define NOP 0x60000000
210
721956f4
AM		 211/* Some other nops. */
212#define CROR_151515 0x4def7b82
213#define CROR_313131 0x4ffffb82
214
cedb70c5 215/* .glink entries for the first 32k functions are two instructions. */
5d1634d7
AM		 216#define LI_R0_0 0x38000000 /* li %r0,0 */
217#define B_DOT 0x48000000 /* b . */
218
219/* After that, we need two instructions to load the index, followed by
220 a branch. */
221#define LIS_R0_0 0x3c000000 /* lis %r0,0 */
10ed1bba 222#define ORI_R0_R0_0 0x60000000 /* ori %r0,%r0,0 */
41bd81ab 223
deb0e272
AM		 224/* Instructions used by the save and restore reg functions. */
225#define STD_R0_0R1 0xf8010000 /* std %r0,0(%r1) */
226#define STD_R0_0R12 0xf80c0000 /* std %r0,0(%r12) */
227#define LD_R0_0R1 0xe8010000 /* ld %r0,0(%r1) */
228#define LD_R0_0R12 0xe80c0000 /* ld %r0,0(%r12) */
82bd7b59
AM		 229#define STFD_FR0_0R1 0xd8010000 /* stfd %fr0,0(%r1) */
230#define LFD_FR0_0R1 0xc8010000 /* lfd %fr0,0(%r1) */
deb0e272
AM		 231#define LI_R12_0 0x39800000 /* li %r12,0 */
232#define STVX_VR0_R12_R0 0x7c0c01ce /* stvx %v0,%r12,%r0 */
233#define LVX_VR0_R12_R0 0x7c0c00ce /* lvx %v0,%r12,%r0 */
234#define MTLR_R0 0x7c0803a6 /* mtlr %r0 */
82bd7b59
AM		 235#define BLR 0x4e800020 /* blr */
236
41bd81ab
AM		 237/* Since .opd is an array of descriptors and each entry will end up
238 with identical R_PPC64_RELATIVE relocs, there is really no need to
239 propagate .opd relocs; The dynamic linker should be taught to
1e2f5b6e 240 relocate .opd without reloc entries. */
41bd81ab
AM		 241#ifndef NO_OPD_RELOCS
242#define NO_OPD_RELOCS 0
243#endif
810d4e75 244
a4b6fadd
AM		 245#ifndef ARRAY_SIZE
246#define ARRAY_SIZE(a) (sizeof (a) / sizeof ((a)[0]))
247#endif
248
810d4e75
AM		 249static inline int
250abiversion (bfd *abfd)
251{
252 return elf_elfheader (abfd)->e_flags & EF_PPC64_ABI;
253}
254
255static inline void
256set_abiversion (bfd *abfd, int ver)
257{
258 elf_elfheader (abfd)->e_flags &= ~EF_PPC64_ABI;
259 elf_elfheader (abfd)->e_flags |= ver & EF_PPC64_ABI;
260}
5bd4f169 261\f
f5e87a1d 262#define ONES(n) (((bfd_vma) 1 << ((n) - 1) << 1) - 1)
b34976b6 263
5bd4f169 264/* Relocation HOWTO's. */
04c9666a 265static reloc_howto_type *ppc64_elf_howto_table[(int) R_PPC64_max];
5bd4f169
AM		 266
267static reloc_howto_type ppc64_elf_howto_raw[] = {
268 /* This reloc does nothing. */
269 HOWTO (R_PPC64_NONE, /* type */
270 0, /* rightshift */
6346d5ca
AM		 271 3, /* size (0 = byte, 1 = short, 2 = long) */
272 0, /* bitsize */
b34976b6 273 FALSE, /* pc_relative */
5bd4f169 274 0, /* bitpos */
f5e87a1d 275 complain_overflow_dont, /* complain_on_overflow */
5bd4f169
AM		 276 bfd_elf_generic_reloc, /* special_function */
277 "R_PPC64_NONE", /* name */
b34976b6 278 FALSE, /* partial_inplace */
d006db6c 279 0, /* src_mask */
5bd4f169 280 0, /* dst_mask */
b34976b6 281 FALSE), /* pcrel_offset */
5bd4f169
AM		 282
283 /* A standard 32 bit relocation. */
284 HOWTO (R_PPC64_ADDR32, /* type */
285 0, /* rightshift */
286 2, /* size (0 = byte, 1 = short, 2 = long) */
287 32, /* bitsize */
b34976b6 288 FALSE, /* pc_relative */
5bd4f169
AM		 289 0, /* bitpos */
290 complain_overflow_bitfield, /* complain_on_overflow */
291 bfd_elf_generic_reloc, /* special_function */
292 "R_PPC64_ADDR32", /* name */
b34976b6 293 FALSE, /* partial_inplace */
5bd4f169
AM		 294 0, /* src_mask */
295 0xffffffff, /* dst_mask */
b34976b6 296 FALSE), /* pcrel_offset */
5bd4f169
AM		 297
298 /* An absolute 26 bit branch; the lower two bits must be zero.
299 FIXME: we don't check that, we just clear them. */
300 HOWTO (R_PPC64_ADDR24, /* type */
301 0, /* rightshift */
302 2, /* size (0 = byte, 1 = short, 2 = long) */
303 26, /* bitsize */
b34976b6 304 FALSE, /* pc_relative */
5bd4f169
AM		 305 0, /* bitpos */
306 complain_overflow_bitfield, /* complain_on_overflow */
307 bfd_elf_generic_reloc, /* special_function */
308 "R_PPC64_ADDR24", /* name */
b34976b6 309 FALSE, /* partial_inplace */
d006db6c 310 0, /* src_mask */
f5e87a1d 311 0x03fffffc, /* dst_mask */
b34976b6 312 FALSE), /* pcrel_offset */
5bd4f169
AM		 313
314 /* A standard 16 bit relocation. */
315 HOWTO (R_PPC64_ADDR16, /* type */
316 0, /* rightshift */
317 1, /* size (0 = byte, 1 = short, 2 = long) */
318 16, /* bitsize */
b34976b6 319 FALSE, /* pc_relative */
5bd4f169
AM		 320 0, /* bitpos */
321 complain_overflow_bitfield, /* complain_on_overflow */
322 bfd_elf_generic_reloc, /* special_function */
323 "R_PPC64_ADDR16", /* name */
b34976b6 324 FALSE, /* partial_inplace */
5bd4f169
AM		 325 0, /* src_mask */
326 0xffff, /* dst_mask */
b34976b6 327 FALSE), /* pcrel_offset */
5bd4f169
AM		 328
329 /* A 16 bit relocation without overflow. */
330 HOWTO (R_PPC64_ADDR16_LO, /* type */
331 0, /* rightshift */
332 1, /* size (0 = byte, 1 = short, 2 = long) */
333 16, /* bitsize */
b34976b6 334 FALSE, /* pc_relative */
5bd4f169
AM		 335 0, /* bitpos */
336 complain_overflow_dont,/* complain_on_overflow */
337 bfd_elf_generic_reloc, /* special_function */
338 "R_PPC64_ADDR16_LO", /* name */
b34976b6 339 FALSE, /* partial_inplace */
5bd4f169
AM		 340 0, /* src_mask */
341 0xffff, /* dst_mask */
b34976b6 342 FALSE), /* pcrel_offset */
5bd4f169
AM		 343
344 /* Bits 16-31 of an address. */
345 HOWTO (R_PPC64_ADDR16_HI, /* type */
346 16, /* rightshift */
347 1, /* size (0 = byte, 1 = short, 2 = long) */
348 16, /* bitsize */
b34976b6 349 FALSE, /* pc_relative */
5bd4f169 350 0, /* bitpos */
f9c6b907 351 complain_overflow_signed, /* complain_on_overflow */
5bd4f169
AM		 352 bfd_elf_generic_reloc, /* special_function */
353 "R_PPC64_ADDR16_HI", /* name */
b34976b6 354 FALSE, /* partial_inplace */
5bd4f169
AM		 355 0, /* src_mask */
356 0xffff, /* dst_mask */
b34976b6 357 FALSE), /* pcrel_offset */
5bd4f169
AM		 358
359 /* Bits 16-31 of an address, plus 1 if the contents of the low 16
360 bits, treated as a signed number, is negative. */
361 HOWTO (R_PPC64_ADDR16_HA, /* type */
362 16, /* rightshift */
363 1, /* size (0 = byte, 1 = short, 2 = long) */
364 16, /* bitsize */
b34976b6 365 FALSE, /* pc_relative */
5bd4f169 366 0, /* bitpos */
f9c6b907 367 complain_overflow_signed, /* complain_on_overflow */
805fc799 368 ppc64_elf_ha_reloc, /* special_function */
5bd4f169 369 "R_PPC64_ADDR16_HA", /* name */
b34976b6 370 FALSE, /* partial_inplace */
5bd4f169
AM		 371 0, /* src_mask */
372 0xffff, /* dst_mask */
b34976b6 373 FALSE), /* pcrel_offset */
5bd4f169
AM		 374
375 /* An absolute 16 bit branch; the lower two bits must be zero.
376 FIXME: we don't check that, we just clear them. */
377 HOWTO (R_PPC64_ADDR14, /* type */
378 0, /* rightshift */
379 2, /* size (0 = byte, 1 = short, 2 = long) */
380 16, /* bitsize */
b34976b6 381 FALSE, /* pc_relative */
5bd4f169 382 0, /* bitpos */
b80eed39 383 complain_overflow_signed, /* complain_on_overflow */
2441e016 384 ppc64_elf_branch_reloc, /* special_function */
5bd4f169 385 "R_PPC64_ADDR14", /* name */
b34976b6 386 FALSE, /* partial_inplace */
d006db6c 387 0, /* src_mask */
f5e87a1d 388 0x0000fffc, /* dst_mask */
b34976b6 389 FALSE), /* pcrel_offset */
5bd4f169
AM		 390
391 /* An absolute 16 bit branch, for which bit 10 should be set to
392 indicate that the branch is expected to be taken. The lower two
393 bits must be zero. */
394 HOWTO (R_PPC64_ADDR14_BRTAKEN, /* type */
395 0, /* rightshift */
396 2, /* size (0 = byte, 1 = short, 2 = long) */
397 16, /* bitsize */
b34976b6 398 FALSE, /* pc_relative */
5bd4f169 399 0, /* bitpos */
b80eed39 400 complain_overflow_signed, /* complain_on_overflow */
805fc799 401 ppc64_elf_brtaken_reloc, /* special_function */
5bd4f169 402 "R_PPC64_ADDR14_BRTAKEN",/* name */
b34976b6 403 FALSE, /* partial_inplace */
d006db6c 404 0, /* src_mask */
f5e87a1d 405 0x0000fffc, /* dst_mask */
b34976b6 406 FALSE), /* pcrel_offset */
5bd4f169
AM		 407
408 /* An absolute 16 bit branch, for which bit 10 should be set to
409 indicate that the branch is not expected to be taken. The lower
410 two bits must be zero. */
411 HOWTO (R_PPC64_ADDR14_BRNTAKEN, /* type */
412 0, /* rightshift */
413 2, /* size (0 = byte, 1 = short, 2 = long) */
414 16, /* bitsize */
b34976b6 415 FALSE, /* pc_relative */
5bd4f169 416 0, /* bitpos */
b80eed39 417 complain_overflow_signed, /* complain_on_overflow */
805fc799 418 ppc64_elf_brtaken_reloc, /* special_function */
5bd4f169 419 "R_PPC64_ADDR14_BRNTAKEN",/* name */
b34976b6 420 FALSE, /* partial_inplace */
d006db6c 421 0, /* src_mask */
f5e87a1d 422 0x0000fffc, /* dst_mask */
b34976b6 423 FALSE), /* pcrel_offset */
5bd4f169
AM		 424
425 /* A relative 26 bit branch; the lower two bits must be zero. */
426 HOWTO (R_PPC64_REL24, /* type */
427 0, /* rightshift */
428 2, /* size (0 = byte, 1 = short, 2 = long) */
429 26, /* bitsize */
b34976b6 430 TRUE, /* pc_relative */
5bd4f169
AM		 431 0, /* bitpos */
432 complain_overflow_signed, /* complain_on_overflow */
2441e016 433 ppc64_elf_branch_reloc, /* special_function */
5bd4f169 434 "R_PPC64_REL24", /* name */
b34976b6 435 FALSE, /* partial_inplace */
d006db6c 436 0, /* src_mask */
f5e87a1d 437 0x03fffffc, /* dst_mask */
b34976b6 438 TRUE), /* pcrel_offset */
5bd4f169
AM		 439
440 /* A relative 16 bit branch; the lower two bits must be zero. */
441 HOWTO (R_PPC64_REL14, /* type */
442 0, /* rightshift */
443 2, /* size (0 = byte, 1 = short, 2 = long) */
444 16, /* bitsize */
b34976b6 445 TRUE, /* pc_relative */
5bd4f169
AM		 446 0, /* bitpos */
447 complain_overflow_signed, /* complain_on_overflow */
2441e016 448 ppc64_elf_branch_reloc, /* special_function */
5bd4f169 449 "R_PPC64_REL14", /* name */
b34976b6 450 FALSE, /* partial_inplace */
d006db6c 451 0, /* src_mask */
f5e87a1d 452 0x0000fffc, /* dst_mask */
b34976b6 453 TRUE), /* pcrel_offset */
5bd4f169
AM		 454
455 /* A relative 16 bit branch. Bit 10 should be set to indicate that
456 the branch is expected to be taken. The lower two bits must be
457 zero. */
458 HOWTO (R_PPC64_REL14_BRTAKEN, /* type */
459 0, /* rightshift */
460 2, /* size (0 = byte, 1 = short, 2 = long) */
461 16, /* bitsize */
b34976b6 462 TRUE, /* pc_relative */
5bd4f169
AM		 463 0, /* bitpos */
464 complain_overflow_signed, /* complain_on_overflow */
805fc799 465 ppc64_elf_brtaken_reloc, /* special_function */
5bd4f169 466 "R_PPC64_REL14_BRTAKEN", /* name */
b34976b6 467 FALSE, /* partial_inplace */
d006db6c 468 0, /* src_mask */
f5e87a1d 469 0x0000fffc, /* dst_mask */
b34976b6 470 TRUE), /* pcrel_offset */
5bd4f169
AM		 471
472 /* A relative 16 bit branch. Bit 10 should be set to indicate that
473 the branch is not expected to be taken. The lower two bits must
474 be zero. */
475 HOWTO (R_PPC64_REL14_BRNTAKEN, /* type */
476 0, /* rightshift */
477 2, /* size (0 = byte, 1 = short, 2 = long) */
478 16, /* bitsize */
b34976b6 479 TRUE, /* pc_relative */
5bd4f169
AM		 480 0, /* bitpos */
481 complain_overflow_signed, /* complain_on_overflow */
805fc799 482 ppc64_elf_brtaken_reloc, /* special_function */
5bd4f169 483 "R_PPC64_REL14_BRNTAKEN",/* name */
b34976b6 484 FALSE, /* partial_inplace */
d006db6c 485 0, /* src_mask */
f5e87a1d 486 0x0000fffc, /* dst_mask */
b34976b6 487 TRUE), /* pcrel_offset */
5bd4f169
AM		 488
489 /* Like R_PPC64_ADDR16, but referring to the GOT table entry for the
490 symbol. */
491 HOWTO (R_PPC64_GOT16, /* type */
492 0, /* rightshift */
493 1, /* size (0 = byte, 1 = short, 2 = long) */
494 16, /* bitsize */
b34976b6 495 FALSE, /* pc_relative */
5bd4f169
AM		 496 0, /* bitpos */
497 complain_overflow_signed, /* complain_on_overflow */
805fc799 498 ppc64_elf_unhandled_reloc, /* special_function */
5bd4f169 499 "R_PPC64_GOT16", /* name */
b34976b6 500 FALSE, /* partial_inplace */
5bd4f169
AM		 501 0, /* src_mask */
502 0xffff, /* dst_mask */
b34976b6 503 FALSE), /* pcrel_offset */
5bd4f169
AM		 504
505 /* Like R_PPC64_ADDR16_LO, but referring to the GOT table entry for
506 the symbol. */
507 HOWTO (R_PPC64_GOT16_LO, /* type */
508 0, /* rightshift */
509 1, /* size (0 = byte, 1 = short, 2 = long) */
510 16, /* bitsize */
b34976b6 511 FALSE, /* pc_relative */
5bd4f169
AM		 512 0, /* bitpos */
513 complain_overflow_dont, /* complain_on_overflow */
805fc799 514 ppc64_elf_unhandled_reloc, /* special_function */
5bd4f169 515 "R_PPC64_GOT16_LO", /* name */
b34976b6 516 FALSE, /* partial_inplace */
5bd4f169
AM		 517 0, /* src_mask */
518 0xffff, /* dst_mask */
b34976b6 519 FALSE), /* pcrel_offset */
5bd4f169
AM		 520
521 /* Like R_PPC64_ADDR16_HI, but referring to the GOT table entry for
522 the symbol. */
523 HOWTO (R_PPC64_GOT16_HI, /* type */
524 16, /* rightshift */
525 1, /* size (0 = byte, 1 = short, 2 = long) */
526 16, /* bitsize */
b34976b6 527 FALSE, /* pc_relative */
5bd4f169 528 0, /* bitpos */
f9c6b907 529 complain_overflow_signed,/* complain_on_overflow */
805fc799 530 ppc64_elf_unhandled_reloc, /* special_function */
5bd4f169 531 "R_PPC64_GOT16_HI", /* name */
b34976b6 532 FALSE, /* partial_inplace */
5bd4f169
AM		 533 0, /* src_mask */
534 0xffff, /* dst_mask */
b34976b6 535 FALSE), /* pcrel_offset */
5bd4f169
AM		 536
537 /* Like R_PPC64_ADDR16_HA, but referring to the GOT table entry for
538 the symbol. */
539 HOWTO (R_PPC64_GOT16_HA, /* type */
540 16, /* rightshift */
541 1, /* size (0 = byte, 1 = short, 2 = long) */
542 16, /* bitsize */
b34976b6 543 FALSE, /* pc_relative */
5bd4f169 544 0, /* bitpos */
f9c6b907 545 complain_overflow_signed,/* complain_on_overflow */
805fc799 546 ppc64_elf_unhandled_reloc, /* special_function */
5bd4f169 547 "R_PPC64_GOT16_HA", /* name */
b34976b6 548 FALSE, /* partial_inplace */
5bd4f169
AM		 549 0, /* src_mask */
550 0xffff, /* dst_mask */
b34976b6 551 FALSE), /* pcrel_offset */
5bd4f169
AM		 552
553 /* This is used only by the dynamic linker. The symbol should exist
554 both in the object being run and in some shared library. The
555 dynamic linker copies the data addressed by the symbol from the
556 shared library into the object, because the object being
557 run has to have the data at some particular address. */
558 HOWTO (R_PPC64_COPY, /* type */
559 0, /* rightshift */
f5e87a1d
AM		 560 0, /* this one is variable size */
561 0, /* bitsize */
b34976b6 562 FALSE, /* pc_relative */
5bd4f169 563 0, /* bitpos */
f5e87a1d
AM		 564 complain_overflow_dont, /* complain_on_overflow */
565 ppc64_elf_unhandled_reloc, /* special_function */
5bd4f169 566 "R_PPC64_COPY", /* name */
b34976b6 567 FALSE, /* partial_inplace */
5bd4f169
AM		 568 0, /* src_mask */
569 0, /* dst_mask */
b34976b6 570 FALSE), /* pcrel_offset */
5bd4f169
AM		 571
572 /* Like R_PPC64_ADDR64, but used when setting global offset table
573 entries. */
574 HOWTO (R_PPC64_GLOB_DAT, /* type */
575 0, /* rightshift */
576 4, /* size (0=byte, 1=short, 2=long, 4=64 bits) */
577 64, /* bitsize */
b34976b6 578 FALSE, /* pc_relative */
5bd4f169
AM		 579 0, /* bitpos */
580 complain_overflow_dont, /* complain_on_overflow */
805fc799 581 ppc64_elf_unhandled_reloc, /* special_function */
5bd4f169 582 "R_PPC64_GLOB_DAT", /* name */
b34976b6 583 FALSE, /* partial_inplace */
5bd4f169 584 0, /* src_mask */
f5e87a1d 585 ONES (64), /* dst_mask */
b34976b6 586 FALSE), /* pcrel_offset */
5bd4f169
AM		 587
588 /* Created by the link editor. Marks a procedure linkage table
589 entry for a symbol. */
590 HOWTO (R_PPC64_JMP_SLOT, /* type */
591 0, /* rightshift */
592 0, /* size (0 = byte, 1 = short, 2 = long) */
593 0, /* bitsize */
b34976b6 594 FALSE, /* pc_relative */
5bd4f169
AM		 595 0, /* bitpos */
596 complain_overflow_dont, /* complain_on_overflow */
805fc799 597 ppc64_elf_unhandled_reloc, /* special_function */
5bd4f169 598 "R_PPC64_JMP_SLOT", /* name */
b34976b6 599 FALSE, /* partial_inplace */
5bd4f169
AM		 600 0, /* src_mask */
601 0, /* dst_mask */
b34976b6 602 FALSE), /* pcrel_offset */
5bd4f169
AM		 603
604 /* Used only by the dynamic linker. When the object is run, this
605 doubleword64 is set to the load address of the object, plus the
606 addend. */
607 HOWTO (R_PPC64_RELATIVE, /* type */
608 0, /* rightshift */
609 4, /* size (0=byte, 1=short, 2=long, 4=64 bits) */
610 64, /* bitsize */
b34976b6 611 FALSE, /* pc_relative */
5bd4f169
AM		 612 0, /* bitpos */
613 complain_overflow_dont, /* complain_on_overflow */
614 bfd_elf_generic_reloc, /* special_function */
615 "R_PPC64_RELATIVE", /* name */
b34976b6 616 FALSE, /* partial_inplace */
5bd4f169 617 0, /* src_mask */
f5e87a1d 618 ONES (64), /* dst_mask */
b34976b6 619 FALSE), /* pcrel_offset */
5bd4f169
AM		 620
621 /* Like R_PPC64_ADDR32, but may be unaligned. */
622 HOWTO (R_PPC64_UADDR32, /* type */
623 0, /* rightshift */
624 2, /* size (0 = byte, 1 = short, 2 = long) */
625 32, /* bitsize */
b34976b6 626 FALSE, /* pc_relative */
5bd4f169
AM		 627 0, /* bitpos */
628 complain_overflow_bitfield, /* complain_on_overflow */
629 bfd_elf_generic_reloc, /* special_function */
630 "R_PPC64_UADDR32", /* name */
b34976b6 631 FALSE, /* partial_inplace */
5bd4f169
AM		 632 0, /* src_mask */
633 0xffffffff, /* dst_mask */
b34976b6 634 FALSE), /* pcrel_offset */
5bd4f169
AM		 635
636 /* Like R_PPC64_ADDR16, but may be unaligned. */
637 HOWTO (R_PPC64_UADDR16, /* type */
638 0, /* rightshift */
639 1, /* size (0 = byte, 1 = short, 2 = long) */
640 16, /* bitsize */
b34976b6 641 FALSE, /* pc_relative */
5bd4f169
AM		 642 0, /* bitpos */
643 complain_overflow_bitfield, /* complain_on_overflow */
644 bfd_elf_generic_reloc, /* special_function */
645 "R_PPC64_UADDR16", /* name */
b34976b6 646 FALSE, /* partial_inplace */
5bd4f169
AM		 647 0, /* src_mask */
648 0xffff, /* dst_mask */
b34976b6 649 FALSE), /* pcrel_offset */
5bd4f169
AM		 650
651 /* 32-bit PC relative. */
652 HOWTO (R_PPC64_REL32, /* type */
653 0, /* rightshift */
654 2, /* size (0 = byte, 1 = short, 2 = long) */
655 32, /* bitsize */
b34976b6 656 TRUE, /* pc_relative */
5bd4f169 657 0, /* bitpos */
5bd4f169
AM		 658 complain_overflow_signed, /* complain_on_overflow */
659 bfd_elf_generic_reloc, /* special_function */
660 "R_PPC64_REL32", /* name */
b34976b6 661 FALSE, /* partial_inplace */
5bd4f169
AM		 662 0, /* src_mask */
663 0xffffffff, /* dst_mask */
b34976b6 664 TRUE), /* pcrel_offset */
5bd4f169 665
10ed1bba 666 /* 32-bit relocation to the symbol's procedure linkage table. */
5bd4f169
AM		 667 HOWTO (R_PPC64_PLT32, /* type */
668 0, /* rightshift */
669 2, /* size (0 = byte, 1 = short, 2 = long) */
670 32, /* bitsize */
b34976b6 671 FALSE, /* pc_relative */
5bd4f169
AM		 672 0, /* bitpos */
673 complain_overflow_bitfield, /* complain_on_overflow */
805fc799 674 ppc64_elf_unhandled_reloc, /* special_function */
5bd4f169 675 "R_PPC64_PLT32", /* name */
b34976b6 676 FALSE, /* partial_inplace */
5bd4f169 677 0, /* src_mask */
f5e87a1d 678 0xffffffff, /* dst_mask */
b34976b6 679 FALSE), /* pcrel_offset */
5bd4f169
AM		 680
681 /* 32-bit PC relative relocation to the symbol's procedure linkage table.
682 FIXME: R_PPC64_PLTREL32 not supported. */
683 HOWTO (R_PPC64_PLTREL32, /* type */
684 0, /* rightshift */
685 2, /* size (0 = byte, 1 = short, 2 = long) */
686 32, /* bitsize */
b34976b6 687 TRUE, /* pc_relative */
5bd4f169
AM		 688 0, /* bitpos */
689 complain_overflow_signed, /* complain_on_overflow */
3ce51288 690 ppc64_elf_unhandled_reloc, /* special_function */
5bd4f169 691 "R_PPC64_PLTREL32", /* name */
b34976b6 692 FALSE, /* partial_inplace */
5bd4f169 693 0, /* src_mask */
f5e87a1d 694 0xffffffff, /* dst_mask */
b34976b6 695 TRUE), /* pcrel_offset */
5bd4f169
AM		 696
697 /* Like R_PPC64_ADDR16_LO, but referring to the PLT table entry for
698 the symbol. */
699 HOWTO (R_PPC64_PLT16_LO, /* type */
700 0, /* rightshift */
701 1, /* size (0 = byte, 1 = short, 2 = long) */
702 16, /* bitsize */
b34976b6 703 FALSE, /* pc_relative */
5bd4f169
AM		 704 0, /* bitpos */
705 complain_overflow_dont, /* complain_on_overflow */
805fc799 706 ppc64_elf_unhandled_reloc, /* special_function */
5bd4f169 707 "R_PPC64_PLT16_LO", /* name */
b34976b6 708 FALSE, /* partial_inplace */
5bd4f169
AM		 709 0, /* src_mask */
710 0xffff, /* dst_mask */
b34976b6 711 FALSE), /* pcrel_offset */
5bd4f169
AM		 712
713 /* Like R_PPC64_ADDR16_HI, but referring to the PLT table entry for
714 the symbol. */
715 HOWTO (R_PPC64_PLT16_HI, /* type */
716 16, /* rightshift */
717 1, /* size (0 = byte, 1 = short, 2 = long) */
718 16, /* bitsize */
b34976b6 719 FALSE, /* pc_relative */
5bd4f169 720 0, /* bitpos */
f9c6b907 721 complain_overflow_signed, /* complain_on_overflow */
805fc799 722 ppc64_elf_unhandled_reloc, /* special_function */
5bd4f169 723 "R_PPC64_PLT16_HI", /* name */
b34976b6 724 FALSE, /* partial_inplace */
5bd4f169
AM		 725 0, /* src_mask */
726 0xffff, /* dst_mask */
b34976b6 727 FALSE), /* pcrel_offset */
5bd4f169
AM		 728
729 /* Like R_PPC64_ADDR16_HA, but referring to the PLT table entry for
730 the symbol. */
731 HOWTO (R_PPC64_PLT16_HA, /* type */
732 16, /* rightshift */
733 1, /* size (0 = byte, 1 = short, 2 = long) */
734 16, /* bitsize */
b34976b6 735 FALSE, /* pc_relative */
5bd4f169 736 0, /* bitpos */
f9c6b907 737 complain_overflow_signed, /* complain_on_overflow */
805fc799 738 ppc64_elf_unhandled_reloc, /* special_function */
5bd4f169 739 "R_PPC64_PLT16_HA", /* name */
b34976b6 740 FALSE, /* partial_inplace */
5bd4f169
AM		 741 0, /* src_mask */
742 0xffff, /* dst_mask */
b34976b6 743 FALSE), /* pcrel_offset */
5bd4f169 744
c061c2d8 745 /* 16-bit section relative relocation. */
5bd4f169
AM		 746 HOWTO (R_PPC64_SECTOFF, /* type */
747 0, /* rightshift */
c061c2d8
AM		 748 1, /* size (0 = byte, 1 = short, 2 = long) */
749 16, /* bitsize */
b34976b6 750 FALSE, /* pc_relative */
5bd4f169 751 0, /* bitpos */
b80eed39 752 complain_overflow_signed, /* complain_on_overflow */
805fc799 753 ppc64_elf_sectoff_reloc, /* special_function */
5bd4f169 754 "R_PPC64_SECTOFF", /* name */
b34976b6 755 FALSE, /* partial_inplace */
5bd4f169 756 0, /* src_mask */
c061c2d8 757 0xffff, /* dst_mask */
b34976b6 758 FALSE), /* pcrel_offset */
5bd4f169 759
c061c2d8 760 /* Like R_PPC64_SECTOFF, but no overflow warning. */
5bd4f169
AM		 761 HOWTO (R_PPC64_SECTOFF_LO, /* type */
762 0, /* rightshift */
763 1, /* size (0 = byte, 1 = short, 2 = long) */
764 16, /* bitsize */
b34976b6 765 FALSE, /* pc_relative */
5bd4f169
AM		 766 0, /* bitpos */
767 complain_overflow_dont, /* complain_on_overflow */
805fc799 768 ppc64_elf_sectoff_reloc, /* special_function */
5bd4f169 769 "R_PPC64_SECTOFF_LO", /* name */
b34976b6 770 FALSE, /* partial_inplace */
5bd4f169
AM		 771 0, /* src_mask */
772 0xffff, /* dst_mask */
b34976b6 773 FALSE), /* pcrel_offset */
5bd4f169
AM		 774
775 /* 16-bit upper half section relative relocation. */
776 HOWTO (R_PPC64_SECTOFF_HI, /* type */
777 16, /* rightshift */
778 1, /* size (0 = byte, 1 = short, 2 = long) */
779 16, /* bitsize */
b34976b6 780 FALSE, /* pc_relative */
5bd4f169 781 0, /* bitpos */
f9c6b907 782 complain_overflow_signed, /* complain_on_overflow */
805fc799 783 ppc64_elf_sectoff_reloc, /* special_function */
5bd4f169 784 "R_PPC64_SECTOFF_HI", /* name */
b34976b6 785 FALSE, /* partial_inplace */
5bd4f169
AM		 786 0, /* src_mask */
787 0xffff, /* dst_mask */
b34976b6 788 FALSE), /* pcrel_offset */
5bd4f169
AM		 789
790 /* 16-bit upper half adjusted section relative relocation. */
791 HOWTO (R_PPC64_SECTOFF_HA, /* type */
792 16, /* rightshift */
793 1, /* size (0 = byte, 1 = short, 2 = long) */
794 16, /* bitsize */
b34976b6 795 FALSE, /* pc_relative */
5bd4f169 796 0, /* bitpos */
f9c6b907 797 complain_overflow_signed, /* complain_on_overflow */
805fc799 798 ppc64_elf_sectoff_ha_reloc, /* special_function */
5bd4f169 799 "R_PPC64_SECTOFF_HA", /* name */
b34976b6 800 FALSE, /* partial_inplace */
5bd4f169
AM		 801 0, /* src_mask */
802 0xffff, /* dst_mask */
b34976b6 803 FALSE), /* pcrel_offset */
5bd4f169 804
04c9666a
AM		 805 /* Like R_PPC64_REL24 without touching the two least significant bits. */
806 HOWTO (R_PPC64_REL30, /* type */
5bd4f169
AM		 807 2, /* rightshift */
808 2, /* size (0 = byte, 1 = short, 2 = long) */
809 30, /* bitsize */
b34976b6 810 TRUE, /* pc_relative */
5bd4f169
AM		 811 0, /* bitpos */
812 complain_overflow_dont, /* complain_on_overflow */
813 bfd_elf_generic_reloc, /* special_function */
04c9666a 814 "R_PPC64_REL30", /* name */
b34976b6 815 FALSE, /* partial_inplace */
d006db6c 816 0, /* src_mask */
5bd4f169 817 0xfffffffc, /* dst_mask */
b34976b6 818 TRUE), /* pcrel_offset */
5bd4f169
AM		 819
820 /* Relocs in the 64-bit PowerPC ELF ABI, not in the 32-bit ABI. */
821
822 /* A standard 64-bit relocation. */
823 HOWTO (R_PPC64_ADDR64, /* type */
824 0, /* rightshift */
825 4, /* size (0=byte, 1=short, 2=long, 4=64 bits) */
826 64, /* bitsize */
b34976b6 827 FALSE, /* pc_relative */
5bd4f169
AM		 828 0, /* bitpos */
829 complain_overflow_dont, /* complain_on_overflow */
830 bfd_elf_generic_reloc, /* special_function */
831 "R_PPC64_ADDR64", /* name */
b34976b6 832 FALSE, /* partial_inplace */
5bd4f169 833 0, /* src_mask */
f5e87a1d 834 ONES (64), /* dst_mask */
b34976b6 835 FALSE), /* pcrel_offset */
5bd4f169
AM		 836
837 /* The bits 32-47 of an address. */
838 HOWTO (R_PPC64_ADDR16_HIGHER, /* type */
839 32, /* rightshift */
840 1, /* size (0 = byte, 1 = short, 2 = long) */
841 16, /* bitsize */
b34976b6 842 FALSE, /* pc_relative */
5bd4f169
AM		 843 0, /* bitpos */
844 complain_overflow_dont, /* complain_on_overflow */
845 bfd_elf_generic_reloc, /* special_function */
846 "R_PPC64_ADDR16_HIGHER", /* name */
b34976b6 847 FALSE, /* partial_inplace */
5bd4f169
AM		 848 0, /* src_mask */
849 0xffff, /* dst_mask */
b34976b6 850 FALSE), /* pcrel_offset */
5bd4f169
AM		 851
852 /* The bits 32-47 of an address, plus 1 if the contents of the low
853 16 bits, treated as a signed number, is negative. */
854 HOWTO (R_PPC64_ADDR16_HIGHERA, /* type */
855 32, /* rightshift */
856 1, /* size (0 = byte, 1 = short, 2 = long) */
857 16, /* bitsize */
b34976b6 858 FALSE, /* pc_relative */
5bd4f169
AM		 859 0, /* bitpos */
860 complain_overflow_dont, /* complain_on_overflow */
805fc799 861 ppc64_elf_ha_reloc, /* special_function */
5bd4f169 862 "R_PPC64_ADDR16_HIGHERA", /* name */
b34976b6 863 FALSE, /* partial_inplace */
5bd4f169
AM		 864 0, /* src_mask */
865 0xffff, /* dst_mask */
b34976b6 866 FALSE), /* pcrel_offset */
5bd4f169
AM		 867
868 /* The bits 48-63 of an address. */
869 HOWTO (R_PPC64_ADDR16_HIGHEST,/* type */
870 48, /* rightshift */
871 1, /* size (0 = byte, 1 = short, 2 = long) */
872 16, /* bitsize */
b34976b6 873 FALSE, /* pc_relative */
5bd4f169
AM		 874 0, /* bitpos */
875 complain_overflow_dont, /* complain_on_overflow */
876 bfd_elf_generic_reloc, /* special_function */
877 "R_PPC64_ADDR16_HIGHEST", /* name */
b34976b6 878 FALSE, /* partial_inplace */
5bd4f169
AM		 879 0, /* src_mask */
880 0xffff, /* dst_mask */
b34976b6 881 FALSE), /* pcrel_offset */
5bd4f169
AM		 882
883 /* The bits 48-63 of an address, plus 1 if the contents of the low
884 16 bits, treated as a signed number, is negative. */
885 HOWTO (R_PPC64_ADDR16_HIGHESTA,/* type */
886 48, /* rightshift */
887 1, /* size (0 = byte, 1 = short, 2 = long) */
888 16, /* bitsize */
b34976b6 889 FALSE, /* pc_relative */
5bd4f169
AM		 890 0, /* bitpos */
891 complain_overflow_dont, /* complain_on_overflow */
805fc799 892 ppc64_elf_ha_reloc, /* special_function */
5bd4f169 893 "R_PPC64_ADDR16_HIGHESTA", /* name */
b34976b6 894 FALSE, /* partial_inplace */
5bd4f169
AM		 895 0, /* src_mask */
896 0xffff, /* dst_mask */
b34976b6 897 FALSE), /* pcrel_offset */
5bd4f169
AM		 898
899 /* Like ADDR64, but may be unaligned. */
900 HOWTO (R_PPC64_UADDR64, /* type */
901 0, /* rightshift */
902 4, /* size (0=byte, 1=short, 2=long, 4=64 bits) */
903 64, /* bitsize */
b34976b6 904 FALSE, /* pc_relative */
5bd4f169
AM		 905 0, /* bitpos */
906 complain_overflow_dont, /* complain_on_overflow */
907 bfd_elf_generic_reloc, /* special_function */
908 "R_PPC64_UADDR64", /* name */
b34976b6 909 FALSE, /* partial_inplace */
5bd4f169 910 0, /* src_mask */
f5e87a1d 911 ONES (64), /* dst_mask */
b34976b6 912 FALSE), /* pcrel_offset */
5bd4f169
AM		 913
914 /* 64-bit relative relocation. */
915 HOWTO (R_PPC64_REL64, /* type */
916 0, /* rightshift */
917 4, /* size (0=byte, 1=short, 2=long, 4=64 bits) */
918 64, /* bitsize */
b34976b6 919 TRUE, /* pc_relative */
5bd4f169
AM		 920 0, /* bitpos */
921 complain_overflow_dont, /* complain_on_overflow */
922 bfd_elf_generic_reloc, /* special_function */
923 "R_PPC64_REL64", /* name */
b34976b6 924 FALSE, /* partial_inplace */
5bd4f169 925 0, /* src_mask */
f5e87a1d 926 ONES (64), /* dst_mask */
b34976b6 927 TRUE), /* pcrel_offset */
5bd4f169 928
cedb70c5 929 /* 64-bit relocation to the symbol's procedure linkage table. */
5bd4f169
AM		 930 HOWTO (R_PPC64_PLT64, /* type */
931 0, /* rightshift */
932 4, /* size (0=byte, 1=short, 2=long, 4=64 bits) */
933 64, /* bitsize */
b34976b6 934 FALSE, /* pc_relative */
5bd4f169
AM		 935 0, /* bitpos */
936 complain_overflow_dont, /* complain_on_overflow */
805fc799 937 ppc64_elf_unhandled_reloc, /* special_function */
5bd4f169 938 "R_PPC64_PLT64", /* name */
b34976b6 939 FALSE, /* partial_inplace */
5bd4f169 940 0, /* src_mask */
f5e87a1d 941 ONES (64), /* dst_mask */
b34976b6 942 FALSE), /* pcrel_offset */
5bd4f169
AM		 943
944 /* 64-bit PC relative relocation to the symbol's procedure linkage
945 table. */
946 /* FIXME: R_PPC64_PLTREL64 not supported. */
947 HOWTO (R_PPC64_PLTREL64, /* type */
948 0, /* rightshift */
949 4, /* size (0=byte, 1=short, 2=long, 4=64 bits) */
950 64, /* bitsize */
b34976b6 951 TRUE, /* pc_relative */
5bd4f169
AM		 952 0, /* bitpos */
953 complain_overflow_dont, /* complain_on_overflow */
805fc799 954 ppc64_elf_unhandled_reloc, /* special_function */
5bd4f169 955 "R_PPC64_PLTREL64", /* name */
b34976b6 956 FALSE, /* partial_inplace */
5bd4f169 957 0, /* src_mask */
f5e87a1d 958 ONES (64), /* dst_mask */
b34976b6 959 TRUE), /* pcrel_offset */
5bd4f169
AM		 960
961 /* 16 bit TOC-relative relocation. */
962
963 /* R_PPC64_TOC16 47 half16* S + A - .TOC. */
964 HOWTO (R_PPC64_TOC16, /* type */
965 0, /* rightshift */
966 1, /* size (0 = byte, 1 = short, 2 = long) */
967 16, /* bitsize */
b34976b6 968 FALSE, /* pc_relative */
5bd4f169
AM		 969 0, /* bitpos */
970 complain_overflow_signed, /* complain_on_overflow */
805fc799 971 ppc64_elf_toc_reloc, /* special_function */
5bd4f169 972 "R_PPC64_TOC16", /* name */
b34976b6 973 FALSE, /* partial_inplace */
5bd4f169
AM		 974 0, /* src_mask */
975 0xffff, /* dst_mask */
b34976b6 976 FALSE), /* pcrel_offset */
5bd4f169
AM		 977
978 /* 16 bit TOC-relative relocation without overflow. */
979
980 /* R_PPC64_TOC16_LO 48 half16 #lo (S + A - .TOC.) */
981 HOWTO (R_PPC64_TOC16_LO, /* type */
982 0, /* rightshift */
983 1, /* size (0 = byte, 1 = short, 2 = long) */
984 16, /* bitsize */
b34976b6 985 FALSE, /* pc_relative */
5bd4f169
AM		 986 0, /* bitpos */
987 complain_overflow_dont, /* complain_on_overflow */
805fc799 988 ppc64_elf_toc_reloc, /* special_function */
5bd4f169 989 "R_PPC64_TOC16_LO", /* name */
b34976b6 990 FALSE, /* partial_inplace */
5bd4f169
AM		 991 0, /* src_mask */
992 0xffff, /* dst_mask */
b34976b6 993 FALSE), /* pcrel_offset */
5bd4f169
AM		 994
995 /* 16 bit TOC-relative relocation, high 16 bits. */
996
997 /* R_PPC64_TOC16_HI 49 half16 #hi (S + A - .TOC.) */
998 HOWTO (R_PPC64_TOC16_HI, /* type */
999 16, /* rightshift */
1000 1, /* size (0 = byte, 1 = short, 2 = long) */
1001 16, /* bitsize */
b34976b6 1002 FALSE, /* pc_relative */
5bd4f169 1003 0, /* bitpos */
f9c6b907 1004 complain_overflow_signed, /* complain_on_overflow */
805fc799 1005 ppc64_elf_toc_reloc, /* special_function */
5bd4f169 1006 "R_PPC64_TOC16_HI", /* name */
b34976b6 1007 FALSE, /* partial_inplace */
5bd4f169
AM		 1008 0, /* src_mask */
1009 0xffff, /* dst_mask */
b34976b6 1010 FALSE), /* pcrel_offset */
5bd4f169
AM		 1011
1012 /* 16 bit TOC-relative relocation, high 16 bits, plus 1 if the
1013 contents of the low 16 bits, treated as a signed number, is
1014 negative. */
1015
1016 /* R_PPC64_TOC16_HA 50 half16 #ha (S + A - .TOC.) */
1017 HOWTO (R_PPC64_TOC16_HA, /* type */
1018 16, /* rightshift */
1019 1, /* size (0 = byte, 1 = short, 2 = long) */
1020 16, /* bitsize */
b34976b6 1021 FALSE, /* pc_relative */
5bd4f169 1022 0, /* bitpos */
f9c6b907 1023 complain_overflow_signed, /* complain_on_overflow */
805fc799 1024 ppc64_elf_toc_ha_reloc, /* special_function */
5bd4f169 1025 "R_PPC64_TOC16_HA", /* name */
b34976b6 1026 FALSE, /* partial_inplace */
5bd4f169
AM		 1027 0, /* src_mask */
1028 0xffff, /* dst_mask */
b34976b6 1029 FALSE), /* pcrel_offset */
5bd4f169
AM		 1030
1031 /* 64-bit relocation; insert value of TOC base (.TOC.). */
1032
1033 /* R_PPC64_TOC 51 doubleword64 .TOC. */
1034 HOWTO (R_PPC64_TOC, /* type */
1035 0, /* rightshift */
1036 4, /* size (0=byte, 1=short, 2=long, 4=64 bits) */
1037 64, /* bitsize */
b34976b6 1038 FALSE, /* pc_relative */
5bd4f169 1039 0, /* bitpos */
b80eed39 1040 complain_overflow_dont, /* complain_on_overflow */
805fc799 1041 ppc64_elf_toc64_reloc, /* special_function */
5bd4f169 1042 "R_PPC64_TOC", /* name */
b34976b6 1043 FALSE, /* partial_inplace */
5bd4f169 1044 0, /* src_mask */
f5e87a1d 1045 ONES (64), /* dst_mask */
b34976b6 1046 FALSE), /* pcrel_offset */
5bd4f169
AM		 1047
1048 /* Like R_PPC64_GOT16, but also informs the link editor that the
1049 value to relocate may (!) refer to a PLT entry which the link
1050 editor (a) may replace with the symbol value. If the link editor
1051 is unable to fully resolve the symbol, it may (b) create a PLT
1052 entry and store the address to the new PLT entry in the GOT.
1053 This permits lazy resolution of function symbols at run time.
1054 The link editor may also skip all of this and just (c) emit a
1055 R_PPC64_GLOB_DAT to tie the symbol to the GOT entry. */
1056 /* FIXME: R_PPC64_PLTGOT16 not implemented. */
1057 HOWTO (R_PPC64_PLTGOT16, /* type */
1058 0, /* rightshift */
1059 1, /* size (0 = byte, 1 = short, 2 = long) */
1060 16, /* bitsize */
b34976b6 1061 FALSE, /* pc_relative */
5bd4f169
AM		 1062 0, /* bitpos */
1063 complain_overflow_signed, /* complain_on_overflow */
805fc799 1064 ppc64_elf_unhandled_reloc, /* special_function */
411e1bfb
AM		 1065 "R_PPC64_PLTGOT16", /* name */
1066 FALSE, /* partial_inplace */
1067 0, /* src_mask */
1068 0xffff, /* dst_mask */
1069 FALSE), /* pcrel_offset */
1070
1071 /* Like R_PPC64_PLTGOT16, but without overflow. */
1072 /* FIXME: R_PPC64_PLTGOT16_LO not implemented. */
1073 HOWTO (R_PPC64_PLTGOT16_LO, /* type */
1074 0, /* rightshift */
1075 1, /* size (0 = byte, 1 = short, 2 = long) */
1076 16, /* bitsize */
1077 FALSE, /* pc_relative */
1078 0, /* bitpos */
1079 complain_overflow_dont, /* complain_on_overflow */
1080 ppc64_elf_unhandled_reloc, /* special_function */
1081 "R_PPC64_PLTGOT16_LO", /* name */
1082 FALSE, /* partial_inplace */
1083 0, /* src_mask */
1084 0xffff, /* dst_mask */
1085 FALSE), /* pcrel_offset */
1086
1087 /* Like R_PPC64_PLT_GOT16, but using bits 16-31 of the address. */
1088 /* FIXME: R_PPC64_PLTGOT16_HI not implemented. */
1089 HOWTO (R_PPC64_PLTGOT16_HI, /* type */
1090 16, /* rightshift */
1091 1, /* size (0 = byte, 1 = short, 2 = long) */
1092 16, /* bitsize */
1093 FALSE, /* pc_relative */
1094 0, /* bitpos */
f9c6b907 1095 complain_overflow_signed, /* complain_on_overflow */
411e1bfb
AM		 1096 ppc64_elf_unhandled_reloc, /* special_function */
1097 "R_PPC64_PLTGOT16_HI", /* name */
1098 FALSE, /* partial_inplace */
1099 0, /* src_mask */
1100 0xffff, /* dst_mask */
1101 FALSE), /* pcrel_offset */
1102
1103 /* Like R_PPC64_PLT_GOT16, but using bits 16-31 of the address, plus
1104 1 if the contents of the low 16 bits, treated as a signed number,
1105 is negative. */
1106 /* FIXME: R_PPC64_PLTGOT16_HA not implemented. */
1107 HOWTO (R_PPC64_PLTGOT16_HA, /* type */
1108 16, /* rightshift */
1109 1, /* size (0 = byte, 1 = short, 2 = long) */
1110 16, /* bitsize */
1111 FALSE, /* pc_relative */
1112 0, /* bitpos */
f9c6b907 1113 complain_overflow_signed, /* complain_on_overflow */
411e1bfb
AM		 1114 ppc64_elf_unhandled_reloc, /* special_function */
1115 "R_PPC64_PLTGOT16_HA", /* name */
1116 FALSE, /* partial_inplace */
1117 0, /* src_mask */
1118 0xffff, /* dst_mask */
1119 FALSE), /* pcrel_offset */
1120
1121 /* Like R_PPC64_ADDR16, but for instructions with a DS field. */
1122 HOWTO (R_PPC64_ADDR16_DS, /* type */
1123 0, /* rightshift */
1124 1, /* size (0 = byte, 1 = short, 2 = long) */
1125 16, /* bitsize */
1126 FALSE, /* pc_relative */
1127 0, /* bitpos */
b80eed39 1128 complain_overflow_signed, /* complain_on_overflow */
411e1bfb
AM		 1129 bfd_elf_generic_reloc, /* special_function */
1130 "R_PPC64_ADDR16_DS", /* name */
1131 FALSE, /* partial_inplace */
1132 0, /* src_mask */
1133 0xfffc, /* dst_mask */
1134 FALSE), /* pcrel_offset */
1135
1136 /* Like R_PPC64_ADDR16_LO, but for instructions with a DS field. */
1137 HOWTO (R_PPC64_ADDR16_LO_DS, /* type */
1138 0, /* rightshift */
1139 1, /* size (0 = byte, 1 = short, 2 = long) */
1140 16, /* bitsize */
1141 FALSE, /* pc_relative */
1142 0, /* bitpos */
1143 complain_overflow_dont,/* complain_on_overflow */
1144 bfd_elf_generic_reloc, /* special_function */
1145 "R_PPC64_ADDR16_LO_DS",/* name */
1146 FALSE, /* partial_inplace */
1147 0, /* src_mask */
1148 0xfffc, /* dst_mask */
1149 FALSE), /* pcrel_offset */
1150
1151 /* Like R_PPC64_GOT16, but for instructions with a DS field. */
1152 HOWTO (R_PPC64_GOT16_DS, /* type */
1153 0, /* rightshift */
1154 1, /* size (0 = byte, 1 = short, 2 = long) */
1155 16, /* bitsize */
1156 FALSE, /* pc_relative */
1157 0, /* bitpos */
1158 complain_overflow_signed, /* complain_on_overflow */
1159 ppc64_elf_unhandled_reloc, /* special_function */
1160 "R_PPC64_GOT16_DS", /* name */
1161 FALSE, /* partial_inplace */
1162 0, /* src_mask */
1163 0xfffc, /* dst_mask */
1164 FALSE), /* pcrel_offset */
1165
1166 /* Like R_PPC64_GOT16_LO, but for instructions with a DS field. */
1167 HOWTO (R_PPC64_GOT16_LO_DS, /* type */
1168 0, /* rightshift */
1169 1, /* size (0 = byte, 1 = short, 2 = long) */
1170 16, /* bitsize */
1171 FALSE, /* pc_relative */
1172 0, /* bitpos */
1173 complain_overflow_dont, /* complain_on_overflow */
1174 ppc64_elf_unhandled_reloc, /* special_function */
1175 "R_PPC64_GOT16_LO_DS", /* name */
1176 FALSE, /* partial_inplace */
1177 0, /* src_mask */
1178 0xfffc, /* dst_mask */
1179 FALSE), /* pcrel_offset */
1180
1181 /* Like R_PPC64_PLT16_LO, but for instructions with a DS field. */
1182 HOWTO (R_PPC64_PLT16_LO_DS, /* type */
1183 0, /* rightshift */
1184 1, /* size (0 = byte, 1 = short, 2 = long) */
1185 16, /* bitsize */
1186 FALSE, /* pc_relative */
1187 0, /* bitpos */
1188 complain_overflow_dont, /* complain_on_overflow */
1189 ppc64_elf_unhandled_reloc, /* special_function */
1190 "R_PPC64_PLT16_LO_DS", /* name */
1191 FALSE, /* partial_inplace */
1192 0, /* src_mask */
1193 0xfffc, /* dst_mask */
1194 FALSE), /* pcrel_offset */
1195
1196 /* Like R_PPC64_SECTOFF, but for instructions with a DS field. */
1197 HOWTO (R_PPC64_SECTOFF_DS, /* type */
1198 0, /* rightshift */
1199 1, /* size (0 = byte, 1 = short, 2 = long) */
1200 16, /* bitsize */
1201 FALSE, /* pc_relative */
1202 0, /* bitpos */
b80eed39 1203 complain_overflow_signed, /* complain_on_overflow */
411e1bfb
AM		 1204 ppc64_elf_sectoff_reloc, /* special_function */
1205 "R_PPC64_SECTOFF_DS", /* name */
1206 FALSE, /* partial_inplace */
1207 0, /* src_mask */
1208 0xfffc, /* dst_mask */
1209 FALSE), /* pcrel_offset */
1210
1211 /* Like R_PPC64_SECTOFF_LO, but for instructions with a DS field. */
1212 HOWTO (R_PPC64_SECTOFF_LO_DS, /* type */
1213 0, /* rightshift */
1214 1, /* size (0 = byte, 1 = short, 2 = long) */
1215 16, /* bitsize */
1216 FALSE, /* pc_relative */
1217 0, /* bitpos */
1218 complain_overflow_dont, /* complain_on_overflow */
1219 ppc64_elf_sectoff_reloc, /* special_function */
1220 "R_PPC64_SECTOFF_LO_DS",/* name */
1221 FALSE, /* partial_inplace */
1222 0, /* src_mask */
1223 0xfffc, /* dst_mask */
1224 FALSE), /* pcrel_offset */
1225
1226 /* Like R_PPC64_TOC16, but for instructions with a DS field. */
1227 HOWTO (R_PPC64_TOC16_DS, /* type */
1228 0, /* rightshift */
1229 1, /* size (0 = byte, 1 = short, 2 = long) */
1230 16, /* bitsize */
1231 FALSE, /* pc_relative */
1232 0, /* bitpos */
1233 complain_overflow_signed, /* complain_on_overflow */
1234 ppc64_elf_toc_reloc, /* special_function */
1235 "R_PPC64_TOC16_DS", /* name */
1236 FALSE, /* partial_inplace */
1237 0, /* src_mask */
1238 0xfffc, /* dst_mask */
1239 FALSE), /* pcrel_offset */
1240
1241 /* Like R_PPC64_TOC16_LO, but for instructions with a DS field. */
1242 HOWTO (R_PPC64_TOC16_LO_DS, /* type */
1243 0, /* rightshift */
1244 1, /* size (0 = byte, 1 = short, 2 = long) */
1245 16, /* bitsize */
1246 FALSE, /* pc_relative */
1247 0, /* bitpos */
1248 complain_overflow_dont, /* complain_on_overflow */
1249 ppc64_elf_toc_reloc, /* special_function */
1250 "R_PPC64_TOC16_LO_DS", /* name */
1251 FALSE, /* partial_inplace */
1252 0, /* src_mask */
1253 0xfffc, /* dst_mask */
1254 FALSE), /* pcrel_offset */
1255
1256 /* Like R_PPC64_PLTGOT16, but for instructions with a DS field. */
1257 /* FIXME: R_PPC64_PLTGOT16_DS not implemented. */
6bfdb61b 1258 HOWTO (R_PPC64_PLTGOT16_DS, /* type */
411e1bfb
AM		 1259 0, /* rightshift */
1260 1, /* size (0 = byte, 1 = short, 2 = long) */
1261 16, /* bitsize */
1262 FALSE, /* pc_relative */
1263 0, /* bitpos */
1264 complain_overflow_signed, /* complain_on_overflow */
1265 ppc64_elf_unhandled_reloc, /* special_function */
1266 "R_PPC64_PLTGOT16_DS", /* name */
1267 FALSE, /* partial_inplace */
1268 0, /* src_mask */
1269 0xfffc, /* dst_mask */
1270 FALSE), /* pcrel_offset */
1271
1272 /* Like R_PPC64_PLTGOT16_LO, but for instructions with a DS field. */
1273 /* FIXME: R_PPC64_PLTGOT16_LO not implemented. */
1274 HOWTO (R_PPC64_PLTGOT16_LO_DS,/* type */
1275 0, /* rightshift */
1276 1, /* size (0 = byte, 1 = short, 2 = long) */
1277 16, /* bitsize */
1278 FALSE, /* pc_relative */
1279 0, /* bitpos */
1280 complain_overflow_dont, /* complain_on_overflow */
1281 ppc64_elf_unhandled_reloc, /* special_function */
1282 "R_PPC64_PLTGOT16_LO_DS",/* name */
1283 FALSE, /* partial_inplace */
1284 0, /* src_mask */
1285 0xfffc, /* dst_mask */
1286 FALSE), /* pcrel_offset */
1287
727fc41e 1288 /* Marker relocs for TLS. */
411e1bfb
AM		 1289 HOWTO (R_PPC64_TLS,
1290 0, /* rightshift */
1291 2, /* size (0 = byte, 1 = short, 2 = long) */
1292 32, /* bitsize */
1293 FALSE, /* pc_relative */
1294 0, /* bitpos */
1295 complain_overflow_dont, /* complain_on_overflow */
1296 bfd_elf_generic_reloc, /* special_function */
1297 "R_PPC64_TLS", /* name */
1298 FALSE, /* partial_inplace */
1299 0, /* src_mask */
1300 0, /* dst_mask */
1301 FALSE), /* pcrel_offset */
1302
727fc41e
AM		 1303 HOWTO (R_PPC64_TLSGD,
1304 0, /* rightshift */
1305 2, /* size (0 = byte, 1 = short, 2 = long) */
1306 32, /* bitsize */
1307 FALSE, /* pc_relative */
1308 0, /* bitpos */
1309 complain_overflow_dont, /* complain_on_overflow */
1310 bfd_elf_generic_reloc, /* special_function */
1311 "R_PPC64_TLSGD", /* name */
1312 FALSE, /* partial_inplace */
1313 0, /* src_mask */
1314 0, /* dst_mask */
1315 FALSE), /* pcrel_offset */
1316
1317 HOWTO (R_PPC64_TLSLD,
1318 0, /* rightshift */
1319 2, /* size (0 = byte, 1 = short, 2 = long) */
1320 32, /* bitsize */
1321 FALSE, /* pc_relative */
1322 0, /* bitpos */
1323 complain_overflow_dont, /* complain_on_overflow */
1324 bfd_elf_generic_reloc, /* special_function */
1325 "R_PPC64_TLSLD", /* name */
1326 FALSE, /* partial_inplace */
1327 0, /* src_mask */
1328 0, /* dst_mask */
1329 FALSE), /* pcrel_offset */
1330
3b421ab3
AM		 1331 HOWTO (R_PPC64_TOCSAVE,
1332 0, /* rightshift */
1333 2, /* size (0 = byte, 1 = short, 2 = long) */
1334 32, /* bitsize */
1335 FALSE, /* pc_relative */
1336 0, /* bitpos */
1337 complain_overflow_dont, /* complain_on_overflow */
1338 bfd_elf_generic_reloc, /* special_function */
1339 "R_PPC64_TOCSAVE", /* name */
1340 FALSE, /* partial_inplace */
1341 0, /* src_mask */
1342 0, /* dst_mask */
1343 FALSE), /* pcrel_offset */
1344
411e1bfb
AM		 1345 /* Computes the load module index of the load module that contains the
1346 definition of its TLS sym. */
1347 HOWTO (R_PPC64_DTPMOD64,
1348 0, /* rightshift */
1349 4, /* size (0 = byte, 1 = short, 2 = long) */
1350 64, /* bitsize */
1351 FALSE, /* pc_relative */
1352 0, /* bitpos */
1353 complain_overflow_dont, /* complain_on_overflow */
1354 ppc64_elf_unhandled_reloc, /* special_function */
1355 "R_PPC64_DTPMOD64", /* name */
1356 FALSE, /* partial_inplace */
1357 0, /* src_mask */
1358 ONES (64), /* dst_mask */
1359 FALSE), /* pcrel_offset */
1360
1361 /* Computes a dtv-relative displacement, the difference between the value
1362 of sym+add and the base address of the thread-local storage block that
1363 contains the definition of sym, minus 0x8000. */
1364 HOWTO (R_PPC64_DTPREL64,
1365 0, /* rightshift */
1366 4, /* size (0 = byte, 1 = short, 2 = long) */
1367 64, /* bitsize */
1368 FALSE, /* pc_relative */
1369 0, /* bitpos */
1370 complain_overflow_dont, /* complain_on_overflow */
1371 ppc64_elf_unhandled_reloc, /* special_function */
1372 "R_PPC64_DTPREL64", /* name */
1373 FALSE, /* partial_inplace */
1374 0, /* src_mask */
1375 ONES (64), /* dst_mask */
1376 FALSE), /* pcrel_offset */
1377
1378 /* A 16 bit dtprel reloc. */
1379 HOWTO (R_PPC64_DTPREL16,
1380 0, /* rightshift */
1381 1, /* size (0 = byte, 1 = short, 2 = long) */
1382 16, /* bitsize */
1383 FALSE, /* pc_relative */
1384 0, /* bitpos */
1385 complain_overflow_signed, /* complain_on_overflow */
1386 ppc64_elf_unhandled_reloc, /* special_function */
1387 "R_PPC64_DTPREL16", /* name */
1388 FALSE, /* partial_inplace */
1389 0, /* src_mask */
1390 0xffff, /* dst_mask */
1391 FALSE), /* pcrel_offset */
1392
1393 /* Like DTPREL16, but no overflow. */
1394 HOWTO (R_PPC64_DTPREL16_LO,
1395 0, /* rightshift */
1396 1, /* size (0 = byte, 1 = short, 2 = long) */
1397 16, /* bitsize */
1398 FALSE, /* pc_relative */
1399 0, /* bitpos */
1400 complain_overflow_dont, /* complain_on_overflow */
1401 ppc64_elf_unhandled_reloc, /* special_function */
1402 "R_PPC64_DTPREL16_LO", /* name */
1403 FALSE, /* partial_inplace */
1404 0, /* src_mask */
1405 0xffff, /* dst_mask */
1406 FALSE), /* pcrel_offset */
1407
1408 /* Like DTPREL16_LO, but next higher group of 16 bits. */
1409 HOWTO (R_PPC64_DTPREL16_HI,
1410 16, /* rightshift */
1411 1, /* size (0 = byte, 1 = short, 2 = long) */
1412 16, /* bitsize */
1413 FALSE, /* pc_relative */
1414 0, /* bitpos */
f9c6b907 1415 complain_overflow_signed, /* complain_on_overflow */
411e1bfb
AM		 1416 ppc64_elf_unhandled_reloc, /* special_function */
1417 "R_PPC64_DTPREL16_HI", /* name */
1418 FALSE, /* partial_inplace */
1419 0, /* src_mask */
1420 0xffff, /* dst_mask */
1421 FALSE), /* pcrel_offset */
1422
1423 /* Like DTPREL16_HI, but adjust for low 16 bits. */
1424 HOWTO (R_PPC64_DTPREL16_HA,
1425 16, /* rightshift */
1426 1, /* size (0 = byte, 1 = short, 2 = long) */
1427 16, /* bitsize */
1428 FALSE, /* pc_relative */
1429 0, /* bitpos */
f9c6b907 1430 complain_overflow_signed, /* complain_on_overflow */
411e1bfb
AM		 1431 ppc64_elf_unhandled_reloc, /* special_function */
1432 "R_PPC64_DTPREL16_HA", /* name */
1433 FALSE, /* partial_inplace */
1434 0, /* src_mask */
1435 0xffff, /* dst_mask */
1436 FALSE), /* pcrel_offset */
1437
1438 /* Like DTPREL16_HI, but next higher group of 16 bits. */
1439 HOWTO (R_PPC64_DTPREL16_HIGHER,
1440 32, /* rightshift */
1441 1, /* size (0 = byte, 1 = short, 2 = long) */
1442 16, /* bitsize */
1443 FALSE, /* pc_relative */
1444 0, /* bitpos */
1445 complain_overflow_dont, /* complain_on_overflow */
1446 ppc64_elf_unhandled_reloc, /* special_function */
1447 "R_PPC64_DTPREL16_HIGHER", /* name */
1448 FALSE, /* partial_inplace */
1449 0, /* src_mask */
1450 0xffff, /* dst_mask */
1451 FALSE), /* pcrel_offset */
1452
1453 /* Like DTPREL16_HIGHER, but adjust for low 16 bits. */
1454 HOWTO (R_PPC64_DTPREL16_HIGHERA,
1455 32, /* rightshift */
1456 1, /* size (0 = byte, 1 = short, 2 = long) */
1457 16, /* bitsize */
1458 FALSE, /* pc_relative */
1459 0, /* bitpos */
1460 complain_overflow_dont, /* complain_on_overflow */
1461 ppc64_elf_unhandled_reloc, /* special_function */
1462 "R_PPC64_DTPREL16_HIGHERA", /* name */
1463 FALSE, /* partial_inplace */
1464 0, /* src_mask */
1465 0xffff, /* dst_mask */
1466 FALSE), /* pcrel_offset */
1467
1468 /* Like DTPREL16_HIGHER, but next higher group of 16 bits. */
1469 HOWTO (R_PPC64_DTPREL16_HIGHEST,
1470 48, /* rightshift */
1471 1, /* size (0 = byte, 1 = short, 2 = long) */
1472 16, /* bitsize */
1473 FALSE, /* pc_relative */
1474 0, /* bitpos */
1475 complain_overflow_dont, /* complain_on_overflow */
1476 ppc64_elf_unhandled_reloc, /* special_function */
1477 "R_PPC64_DTPREL16_HIGHEST", /* name */
1478 FALSE, /* partial_inplace */
1479 0, /* src_mask */
1480 0xffff, /* dst_mask */
1481 FALSE), /* pcrel_offset */
1482
1483 /* Like DTPREL16_HIGHEST, but adjust for low 16 bits. */
1484 HOWTO (R_PPC64_DTPREL16_HIGHESTA,
1485 48, /* rightshift */
1486 1, /* size (0 = byte, 1 = short, 2 = long) */
1487 16, /* bitsize */
1488 FALSE, /* pc_relative */
1489 0, /* bitpos */
1490 complain_overflow_dont, /* complain_on_overflow */
1491 ppc64_elf_unhandled_reloc, /* special_function */
1492 "R_PPC64_DTPREL16_HIGHESTA", /* name */
1493 FALSE, /* partial_inplace */
1494 0, /* src_mask */
1495 0xffff, /* dst_mask */
1496 FALSE), /* pcrel_offset */
1497
1498 /* Like DTPREL16, but for insns with a DS field. */
1499 HOWTO (R_PPC64_DTPREL16_DS,
1500 0, /* rightshift */
1501 1, /* size (0 = byte, 1 = short, 2 = long) */
1502 16, /* bitsize */
1503 FALSE, /* pc_relative */
1504 0, /* bitpos */
1505 complain_overflow_signed, /* complain_on_overflow */
1506 ppc64_elf_unhandled_reloc, /* special_function */
1507 "R_PPC64_DTPREL16_DS", /* name */
1508 FALSE, /* partial_inplace */
1509 0, /* src_mask */
1510 0xfffc, /* dst_mask */
1511 FALSE), /* pcrel_offset */
1512
1513 /* Like DTPREL16_DS, but no overflow. */
1514 HOWTO (R_PPC64_DTPREL16_LO_DS,
1515 0, /* rightshift */
1516 1, /* size (0 = byte, 1 = short, 2 = long) */
1517 16, /* bitsize */
1518 FALSE, /* pc_relative */
1519 0, /* bitpos */
1520 complain_overflow_dont, /* complain_on_overflow */
1521 ppc64_elf_unhandled_reloc, /* special_function */
1522 "R_PPC64_DTPREL16_LO_DS", /* name */
1523 FALSE, /* partial_inplace */
1524 0, /* src_mask */
1525 0xfffc, /* dst_mask */
1526 FALSE), /* pcrel_offset */
1527
1528 /* Computes a tp-relative displacement, the difference between the value of
1529 sym+add and the value of the thread pointer (r13). */
1530 HOWTO (R_PPC64_TPREL64,
1531 0, /* rightshift */
1532 4, /* size (0 = byte, 1 = short, 2 = long) */
1533 64, /* bitsize */
1534 FALSE, /* pc_relative */
1535 0, /* bitpos */
1536 complain_overflow_dont, /* complain_on_overflow */
1537 ppc64_elf_unhandled_reloc, /* special_function */
1538 "R_PPC64_TPREL64", /* name */
1539 FALSE, /* partial_inplace */
1540 0, /* src_mask */
1541 ONES (64), /* dst_mask */
1542 FALSE), /* pcrel_offset */
1543
1544 /* A 16 bit tprel reloc. */
1545 HOWTO (R_PPC64_TPREL16,
1546 0, /* rightshift */
1547 1, /* size (0 = byte, 1 = short, 2 = long) */
1548 16, /* bitsize */
1549 FALSE, /* pc_relative */
1550 0, /* bitpos */
1551 complain_overflow_signed, /* complain_on_overflow */
1552 ppc64_elf_unhandled_reloc, /* special_function */
1553 "R_PPC64_TPREL16", /* name */
1554 FALSE, /* partial_inplace */
1555 0, /* src_mask */
1556 0xffff, /* dst_mask */
1557 FALSE), /* pcrel_offset */
1558
1559 /* Like TPREL16, but no overflow. */
1560 HOWTO (R_PPC64_TPREL16_LO,
1561 0, /* rightshift */
1562 1, /* size (0 = byte, 1 = short, 2 = long) */
1563 16, /* bitsize */
1564 FALSE, /* pc_relative */
1565 0, /* bitpos */
1566 complain_overflow_dont, /* complain_on_overflow */
1567 ppc64_elf_unhandled_reloc, /* special_function */
1568 "R_PPC64_TPREL16_LO", /* name */
1569 FALSE, /* partial_inplace */
1570 0, /* src_mask */
1571 0xffff, /* dst_mask */
1572 FALSE), /* pcrel_offset */
1573
1574 /* Like TPREL16_LO, but next higher group of 16 bits. */
1575 HOWTO (R_PPC64_TPREL16_HI,
1576 16, /* rightshift */
1577 1, /* size (0 = byte, 1 = short, 2 = long) */
1578 16, /* bitsize */
1579 FALSE, /* pc_relative */
1580 0, /* bitpos */
f9c6b907 1581 complain_overflow_signed, /* complain_on_overflow */
411e1bfb
AM		 1582 ppc64_elf_unhandled_reloc, /* special_function */
1583 "R_PPC64_TPREL16_HI", /* name */
1584 FALSE, /* partial_inplace */
1585 0, /* src_mask */
1586 0xffff, /* dst_mask */
1587 FALSE), /* pcrel_offset */
1588
1589 /* Like TPREL16_HI, but adjust for low 16 bits. */
1590 HOWTO (R_PPC64_TPREL16_HA,
1591 16, /* rightshift */
1592 1, /* size (0 = byte, 1 = short, 2 = long) */
1593 16, /* bitsize */
1594 FALSE, /* pc_relative */
1595 0, /* bitpos */
f9c6b907 1596 complain_overflow_signed, /* complain_on_overflow */
411e1bfb
AM		 1597 ppc64_elf_unhandled_reloc, /* special_function */
1598 "R_PPC64_TPREL16_HA", /* name */
1599 FALSE, /* partial_inplace */
1600 0, /* src_mask */
1601 0xffff, /* dst_mask */
1602 FALSE), /* pcrel_offset */
1603
1604 /* Like TPREL16_HI, but next higher group of 16 bits. */
1605 HOWTO (R_PPC64_TPREL16_HIGHER,
1606 32, /* rightshift */
1607 1, /* size (0 = byte, 1 = short, 2 = long) */
1608 16, /* bitsize */
1609 FALSE, /* pc_relative */
1610 0, /* bitpos */
1611 complain_overflow_dont, /* complain_on_overflow */
1612 ppc64_elf_unhandled_reloc, /* special_function */
1613 "R_PPC64_TPREL16_HIGHER", /* name */
1614 FALSE, /* partial_inplace */
1615 0, /* src_mask */
1616 0xffff, /* dst_mask */
1617 FALSE), /* pcrel_offset */
1618
1619 /* Like TPREL16_HIGHER, but adjust for low 16 bits. */
1620 HOWTO (R_PPC64_TPREL16_HIGHERA,
1621 32, /* rightshift */
1622 1, /* size (0 = byte, 1 = short, 2 = long) */
1623 16, /* bitsize */
1624 FALSE, /* pc_relative */
1625 0, /* bitpos */
1626 complain_overflow_dont, /* complain_on_overflow */
1627 ppc64_elf_unhandled_reloc, /* special_function */
1628 "R_PPC64_TPREL16_HIGHERA", /* name */
1629 FALSE, /* partial_inplace */
1630 0, /* src_mask */
1631 0xffff, /* dst_mask */
1632 FALSE), /* pcrel_offset */
1633
1634 /* Like TPREL16_HIGHER, but next higher group of 16 bits. */
1635 HOWTO (R_PPC64_TPREL16_HIGHEST,
1636 48, /* rightshift */
1637 1, /* size (0 = byte, 1 = short, 2 = long) */
1638 16, /* bitsize */
1639 FALSE, /* pc_relative */
1640 0, /* bitpos */
1641 complain_overflow_dont, /* complain_on_overflow */
1642 ppc64_elf_unhandled_reloc, /* special_function */
1643 "R_PPC64_TPREL16_HIGHEST", /* name */
1644 FALSE, /* partial_inplace */
1645 0, /* src_mask */
1646 0xffff, /* dst_mask */
1647 FALSE), /* pcrel_offset */
1648
1649 /* Like TPREL16_HIGHEST, but adjust for low 16 bits. */
1650 HOWTO (R_PPC64_TPREL16_HIGHESTA,
1651 48, /* rightshift */
1652 1, /* size (0 = byte, 1 = short, 2 = long) */
1653 16, /* bitsize */
1654 FALSE, /* pc_relative */
1655 0, /* bitpos */
1656 complain_overflow_dont, /* complain_on_overflow */
1657 ppc64_elf_unhandled_reloc, /* special_function */
1658 "R_PPC64_TPREL16_HIGHESTA", /* name */
1659 FALSE, /* partial_inplace */
1660 0, /* src_mask */
1661 0xffff, /* dst_mask */
1662 FALSE), /* pcrel_offset */
1663
1664 /* Like TPREL16, but for insns with a DS field. */
1665 HOWTO (R_PPC64_TPREL16_DS,
1666 0, /* rightshift */
1667 1, /* size (0 = byte, 1 = short, 2 = long) */
1668 16, /* bitsize */
1669 FALSE, /* pc_relative */
1670 0, /* bitpos */
1671 complain_overflow_signed, /* complain_on_overflow */
1672 ppc64_elf_unhandled_reloc, /* special_function */
1673 "R_PPC64_TPREL16_DS", /* name */
1674 FALSE, /* partial_inplace */
1675 0, /* src_mask */
1676 0xfffc, /* dst_mask */
1677 FALSE), /* pcrel_offset */
1678
1679 /* Like TPREL16_DS, but no overflow. */
1680 HOWTO (R_PPC64_TPREL16_LO_DS,
1681 0, /* rightshift */
1682 1, /* size (0 = byte, 1 = short, 2 = long) */
1683 16, /* bitsize */
1684 FALSE, /* pc_relative */
1685 0, /* bitpos */
1686 complain_overflow_dont, /* complain_on_overflow */
1687 ppc64_elf_unhandled_reloc, /* special_function */
1688 "R_PPC64_TPREL16_LO_DS", /* name */
1689 FALSE, /* partial_inplace */
1690 0, /* src_mask */
1691 0xfffc, /* dst_mask */
1692 FALSE), /* pcrel_offset */
1693
1694 /* Allocates two contiguous entries in the GOT to hold a tls_index structure,
1695 with values (sym+add)@dtpmod and (sym+add)@dtprel, and computes the offset
1696 to the first entry relative to the TOC base (r2). */
1697 HOWTO (R_PPC64_GOT_TLSGD16,
1698 0, /* rightshift */
1699 1, /* size (0 = byte, 1 = short, 2 = long) */
1700 16, /* bitsize */
1701 FALSE, /* pc_relative */
1702 0, /* bitpos */
1703 complain_overflow_signed, /* complain_on_overflow */
1704 ppc64_elf_unhandled_reloc, /* special_function */
1705 "R_PPC64_GOT_TLSGD16", /* name */
b34976b6 1706 FALSE, /* partial_inplace */
5bd4f169
AM		 1707 0, /* src_mask */
1708 0xffff, /* dst_mask */
b34976b6 1709 FALSE), /* pcrel_offset */
5bd4f169 1710
411e1bfb
AM		 1711 /* Like GOT_TLSGD16, but no overflow. */
1712 HOWTO (R_PPC64_GOT_TLSGD16_LO,
5bd4f169
AM		 1713 0, /* rightshift */
1714 1, /* size (0 = byte, 1 = short, 2 = long) */
1715 16, /* bitsize */
b34976b6 1716 FALSE, /* pc_relative */
5bd4f169
AM		 1717 0, /* bitpos */
1718 complain_overflow_dont, /* complain_on_overflow */
805fc799 1719 ppc64_elf_unhandled_reloc, /* special_function */
411e1bfb 1720 "R_PPC64_GOT_TLSGD16_LO", /* name */
b34976b6 1721 FALSE, /* partial_inplace */
5bd4f169
AM		 1722 0, /* src_mask */
1723 0xffff, /* dst_mask */
b34976b6 1724 FALSE), /* pcrel_offset */
5bd4f169 1725
411e1bfb
AM		 1726 /* Like GOT_TLSGD16_LO, but next higher group of 16 bits. */
1727 HOWTO (R_PPC64_GOT_TLSGD16_HI,
5bd4f169
AM		 1728 16, /* rightshift */
1729 1, /* size (0 = byte, 1 = short, 2 = long) */
1730 16, /* bitsize */
b34976b6 1731 FALSE, /* pc_relative */
5bd4f169 1732 0, /* bitpos */
f9c6b907 1733 complain_overflow_signed, /* complain_on_overflow */
805fc799 1734 ppc64_elf_unhandled_reloc, /* special_function */
411e1bfb 1735 "R_PPC64_GOT_TLSGD16_HI", /* name */
b34976b6 1736 FALSE, /* partial_inplace */
5bd4f169
AM		 1737 0, /* src_mask */
1738 0xffff, /* dst_mask */
b34976b6 1739 FALSE), /* pcrel_offset */
5bd4f169 1740
411e1bfb
AM		 1741 /* Like GOT_TLSGD16_HI, but adjust for low 16 bits. */
1742 HOWTO (R_PPC64_GOT_TLSGD16_HA,
5bd4f169
AM		 1743 16, /* rightshift */
1744 1, /* size (0 = byte, 1 = short, 2 = long) */
1745 16, /* bitsize */
b34976b6 1746 FALSE, /* pc_relative */
5bd4f169 1747 0, /* bitpos */
f9c6b907 1748 complain_overflow_signed, /* complain_on_overflow */
805fc799 1749 ppc64_elf_unhandled_reloc, /* special_function */
411e1bfb 1750 "R_PPC64_GOT_TLSGD16_HA", /* name */
b34976b6 1751 FALSE, /* partial_inplace */
5bd4f169
AM		 1752 0, /* src_mask */
1753 0xffff, /* dst_mask */
b34976b6 1754 FALSE), /* pcrel_offset */
5bd4f169 1755
411e1bfb
AM		 1756 /* Allocates two contiguous entries in the GOT to hold a tls_index structure,
1757 with values (sym+add)@dtpmod and zero, and computes the offset to the
1758 first entry relative to the TOC base (r2). */
1759 HOWTO (R_PPC64_GOT_TLSLD16,
5bd4f169
AM		 1760 0, /* rightshift */
1761 1, /* size (0 = byte, 1 = short, 2 = long) */
1762 16, /* bitsize */
b34976b6 1763 FALSE, /* pc_relative */
5bd4f169 1764 0, /* bitpos */
411e1bfb
AM		 1765 complain_overflow_signed, /* complain_on_overflow */
1766 ppc64_elf_unhandled_reloc, /* special_function */
1767 "R_PPC64_GOT_TLSLD16", /* name */
b34976b6 1768 FALSE, /* partial_inplace */
d006db6c 1769 0, /* src_mask */
411e1bfb 1770 0xffff, /* dst_mask */
b34976b6 1771 FALSE), /* pcrel_offset */
5bd4f169 1772
411e1bfb
AM		 1773 /* Like GOT_TLSLD16, but no overflow. */
1774 HOWTO (R_PPC64_GOT_TLSLD16_LO,
5bd4f169
AM		 1775 0, /* rightshift */
1776 1, /* size (0 = byte, 1 = short, 2 = long) */
1777 16, /* bitsize */
b34976b6 1778 FALSE, /* pc_relative */
5bd4f169 1779 0, /* bitpos */
411e1bfb
AM		 1780 complain_overflow_dont, /* complain_on_overflow */
1781 ppc64_elf_unhandled_reloc, /* special_function */
1782 "R_PPC64_GOT_TLSLD16_LO", /* name */
b34976b6 1783 FALSE, /* partial_inplace */
d006db6c 1784 0, /* src_mask */
411e1bfb 1785 0xffff, /* dst_mask */
b34976b6 1786 FALSE), /* pcrel_offset */
5bd4f169 1787
411e1bfb
AM		 1788 /* Like GOT_TLSLD16_LO, but next higher group of 16 bits. */
1789 HOWTO (R_PPC64_GOT_TLSLD16_HI,
1790 16, /* rightshift */
5bd4f169
AM		 1791 1, /* size (0 = byte, 1 = short, 2 = long) */
1792 16, /* bitsize */
b34976b6 1793 FALSE, /* pc_relative */
5bd4f169 1794 0, /* bitpos */
f9c6b907 1795 complain_overflow_signed, /* complain_on_overflow */
805fc799 1796 ppc64_elf_unhandled_reloc, /* special_function */
411e1bfb 1797 "R_PPC64_GOT_TLSLD16_HI", /* name */
b34976b6 1798 FALSE, /* partial_inplace */
d006db6c 1799 0, /* src_mask */
411e1bfb 1800 0xffff, /* dst_mask */
b34976b6 1801 FALSE), /* pcrel_offset */
5bd4f169 1802
411e1bfb
AM		 1803 /* Like GOT_TLSLD16_HI, but adjust for low 16 bits. */
1804 HOWTO (R_PPC64_GOT_TLSLD16_HA,
1805 16, /* rightshift */
5bd4f169
AM		 1806 1, /* size (0 = byte, 1 = short, 2 = long) */
1807 16, /* bitsize */
b34976b6 1808 FALSE, /* pc_relative */
5bd4f169 1809 0, /* bitpos */
f9c6b907 1810 complain_overflow_signed, /* complain_on_overflow */
805fc799 1811 ppc64_elf_unhandled_reloc, /* special_function */
411e1bfb 1812 "R_PPC64_GOT_TLSLD16_HA", /* name */
b34976b6 1813 FALSE, /* partial_inplace */
d006db6c 1814 0, /* src_mask */
411e1bfb 1815 0xffff, /* dst_mask */
b34976b6 1816 FALSE), /* pcrel_offset */
5bd4f169 1817
411e1bfb
AM		 1818 /* Allocates an entry in the GOT with value (sym+add)@dtprel, and computes
1819 the offset to the entry relative to the TOC base (r2). */
1820 HOWTO (R_PPC64_GOT_DTPREL16_DS,
5bd4f169
AM		 1821 0, /* rightshift */
1822 1, /* size (0 = byte, 1 = short, 2 = long) */
1823 16, /* bitsize */
b34976b6 1824 FALSE, /* pc_relative */
5bd4f169 1825 0, /* bitpos */
411e1bfb 1826 complain_overflow_signed, /* complain_on_overflow */
805fc799 1827 ppc64_elf_unhandled_reloc, /* special_function */
411e1bfb 1828 "R_PPC64_GOT_DTPREL16_DS", /* name */
b34976b6 1829 FALSE, /* partial_inplace */
d006db6c 1830 0, /* src_mask */
5bd4f169 1831 0xfffc, /* dst_mask */
b34976b6 1832 FALSE), /* pcrel_offset */
5bd4f169 1833
411e1bfb
AM		 1834 /* Like GOT_DTPREL16_DS, but no overflow. */
1835 HOWTO (R_PPC64_GOT_DTPREL16_LO_DS,
5bd4f169 1836 0, /* rightshift */
c061c2d8
AM		 1837 1, /* size (0 = byte, 1 = short, 2 = long) */
1838 16, /* bitsize */
b34976b6 1839 FALSE, /* pc_relative */
5bd4f169 1840 0, /* bitpos */
411e1bfb
AM		 1841 complain_overflow_dont, /* complain_on_overflow */
1842 ppc64_elf_unhandled_reloc, /* special_function */
1843 "R_PPC64_GOT_DTPREL16_LO_DS", /* name */
b34976b6 1844 FALSE, /* partial_inplace */
d006db6c 1845 0, /* src_mask */
c061c2d8 1846 0xfffc, /* dst_mask */
b34976b6 1847 FALSE), /* pcrel_offset */
5bd4f169 1848
411e1bfb
AM		 1849 /* Like GOT_DTPREL16_LO_DS, but next higher group of 16 bits. */
1850 HOWTO (R_PPC64_GOT_DTPREL16_HI,
1851 16, /* rightshift */
5bd4f169
AM		 1852 1, /* size (0 = byte, 1 = short, 2 = long) */
1853 16, /* bitsize */
b34976b6 1854 FALSE, /* pc_relative */
5bd4f169 1855 0, /* bitpos */
f9c6b907 1856 complain_overflow_signed, /* complain_on_overflow */
411e1bfb
AM		 1857 ppc64_elf_unhandled_reloc, /* special_function */
1858 "R_PPC64_GOT_DTPREL16_HI", /* name */
b34976b6 1859 FALSE, /* partial_inplace */
d006db6c 1860 0, /* src_mask */
411e1bfb 1861 0xffff, /* dst_mask */
b34976b6 1862 FALSE), /* pcrel_offset */
5bd4f169 1863
411e1bfb
AM		 1864 /* Like GOT_DTPREL16_HI, but adjust for low 16 bits. */
1865 HOWTO (R_PPC64_GOT_DTPREL16_HA,
1866 16, /* rightshift */
1867 1, /* size (0 = byte, 1 = short, 2 = long) */
1868 16, /* bitsize */
1869 FALSE, /* pc_relative */
1870 0, /* bitpos */
f9c6b907 1871 complain_overflow_signed, /* complain_on_overflow */
411e1bfb
AM		 1872 ppc64_elf_unhandled_reloc, /* special_function */
1873 "R_PPC64_GOT_DTPREL16_HA", /* name */
1874 FALSE, /* partial_inplace */
1875 0, /* src_mask */
1876 0xffff, /* dst_mask */
1877 FALSE), /* pcrel_offset */
1878
1879 /* Allocates an entry in the GOT with value (sym+add)@tprel, and computes the
1880 offset to the entry relative to the TOC base (r2). */
1881 HOWTO (R_PPC64_GOT_TPREL16_DS,
5bd4f169
AM		 1882 0, /* rightshift */
1883 1, /* size (0 = byte, 1 = short, 2 = long) */
1884 16, /* bitsize */
b34976b6 1885 FALSE, /* pc_relative */
5bd4f169
AM		 1886 0, /* bitpos */
1887 complain_overflow_signed, /* complain_on_overflow */
411e1bfb
AM		 1888 ppc64_elf_unhandled_reloc, /* special_function */
1889 "R_PPC64_GOT_TPREL16_DS", /* name */
b34976b6 1890 FALSE, /* partial_inplace */
d006db6c 1891 0, /* src_mask */
ad8e1ba5 1892 0xfffc, /* dst_mask */
b34976b6 1893 FALSE), /* pcrel_offset */
5bd4f169 1894
411e1bfb
AM		 1895 /* Like GOT_TPREL16_DS, but no overflow. */
1896 HOWTO (R_PPC64_GOT_TPREL16_LO_DS,
5bd4f169
AM		 1897 0, /* rightshift */
1898 1, /* size (0 = byte, 1 = short, 2 = long) */
1899 16, /* bitsize */
b34976b6 1900 FALSE, /* pc_relative */
5bd4f169
AM		 1901 0, /* bitpos */
1902 complain_overflow_dont, /* complain_on_overflow */
411e1bfb
AM		 1903 ppc64_elf_unhandled_reloc, /* special_function */
1904 "R_PPC64_GOT_TPREL16_LO_DS", /* name */
b34976b6 1905 FALSE, /* partial_inplace */
d006db6c 1906 0, /* src_mask */
ad8e1ba5 1907 0xfffc, /* dst_mask */
b34976b6 1908 FALSE), /* pcrel_offset */
5bd4f169 1909
411e1bfb
AM		 1910 /* Like GOT_TPREL16_LO_DS, but next higher group of 16 bits. */
1911 HOWTO (R_PPC64_GOT_TPREL16_HI,
1912 16, /* rightshift */
5bd4f169
AM		 1913 1, /* size (0 = byte, 1 = short, 2 = long) */
1914 16, /* bitsize */
b34976b6 1915 FALSE, /* pc_relative */
5bd4f169 1916 0, /* bitpos */
f9c6b907 1917 complain_overflow_signed, /* complain_on_overflow */
805fc799 1918 ppc64_elf_unhandled_reloc, /* special_function */
411e1bfb 1919 "R_PPC64_GOT_TPREL16_HI", /* name */
b34976b6 1920 FALSE, /* partial_inplace */
d006db6c 1921 0, /* src_mask */
411e1bfb 1922 0xffff, /* dst_mask */
b34976b6 1923 FALSE), /* pcrel_offset */
5bd4f169 1924
411e1bfb
AM		 1925 /* Like GOT_TPREL16_HI, but adjust for low 16 bits. */
1926 HOWTO (R_PPC64_GOT_TPREL16_HA,
1927 16, /* rightshift */
5bd4f169
AM		 1928 1, /* size (0 = byte, 1 = short, 2 = long) */
1929 16, /* bitsize */
b34976b6 1930 FALSE, /* pc_relative */
5bd4f169 1931 0, /* bitpos */
f9c6b907 1932 complain_overflow_signed, /* complain_on_overflow */
805fc799 1933 ppc64_elf_unhandled_reloc, /* special_function */
411e1bfb 1934 "R_PPC64_GOT_TPREL16_HA", /* name */
b34976b6 1935 FALSE, /* partial_inplace */
d006db6c 1936 0, /* src_mask */
411e1bfb 1937 0xffff, /* dst_mask */
b34976b6 1938 FALSE), /* pcrel_offset */
5bd4f169 1939
25f23106
AM		 1940 HOWTO (R_PPC64_JMP_IREL, /* type */
1941 0, /* rightshift */
1942 0, /* size (0=byte, 1=short, 2=long, 4=64 bits) */
1943 0, /* bitsize */
1944 FALSE, /* pc_relative */
1945 0, /* bitpos */
1946 complain_overflow_dont, /* complain_on_overflow */
1947 ppc64_elf_unhandled_reloc, /* special_function */
1948 "R_PPC64_JMP_IREL", /* name */
1949 FALSE, /* partial_inplace */
1950 0, /* src_mask */
1951 0, /* dst_mask */
1952 FALSE), /* pcrel_offset */
1953
e054468f
AM		 1954 HOWTO (R_PPC64_IRELATIVE, /* type */
1955 0, /* rightshift */
1956 4, /* size (0=byte, 1=short, 2=long, 4=64 bits) */
1957 64, /* bitsize */
1958 FALSE, /* pc_relative */
1959 0, /* bitpos */
1960 complain_overflow_dont, /* complain_on_overflow */
1961 bfd_elf_generic_reloc, /* special_function */
1962 "R_PPC64_IRELATIVE", /* name */
1963 FALSE, /* partial_inplace */
1964 0, /* src_mask */
1965 ONES (64), /* dst_mask */
1966 FALSE), /* pcrel_offset */
1967
25f23106
AM		 1968 /* A 16 bit relative relocation. */
1969 HOWTO (R_PPC64_REL16, /* type */
1970 0, /* rightshift */
1971 1, /* size (0 = byte, 1 = short, 2 = long) */
1972 16, /* bitsize */
1973 TRUE, /* pc_relative */
1974 0, /* bitpos */
b80eed39 1975 complain_overflow_signed, /* complain_on_overflow */
25f23106
AM		 1976 bfd_elf_generic_reloc, /* special_function */
1977 "R_PPC64_REL16", /* name */
1978 FALSE, /* partial_inplace */
1979 0, /* src_mask */
1980 0xffff, /* dst_mask */
1981 TRUE), /* pcrel_offset */
1982
1983 /* A 16 bit relative relocation without overflow. */
1984 HOWTO (R_PPC64_REL16_LO, /* type */
1985 0, /* rightshift */
1986 1, /* size (0 = byte, 1 = short, 2 = long) */
1987 16, /* bitsize */
1988 TRUE, /* pc_relative */
1989 0, /* bitpos */
1990 complain_overflow_dont,/* complain_on_overflow */
1991 bfd_elf_generic_reloc, /* special_function */
1992 "R_PPC64_REL16_LO", /* name */
1993 FALSE, /* partial_inplace */
1994 0, /* src_mask */
1995 0xffff, /* dst_mask */
1996 TRUE), /* pcrel_offset */
1997
1998 /* The high order 16 bits of a relative address. */
1999 HOWTO (R_PPC64_REL16_HI, /* type */
2000 16, /* rightshift */
2001 1, /* size (0 = byte, 1 = short, 2 = long) */
2002 16, /* bitsize */
2003 TRUE, /* pc_relative */
2004 0, /* bitpos */
f9c6b907 2005 complain_overflow_signed, /* complain_on_overflow */
25f23106
AM		 2006 bfd_elf_generic_reloc, /* special_function */
2007 "R_PPC64_REL16_HI", /* name */
2008 FALSE, /* partial_inplace */
2009 0, /* src_mask */
2010 0xffff, /* dst_mask */
2011 TRUE), /* pcrel_offset */
2012
2013 /* The high order 16 bits of a relative address, plus 1 if the contents of
2014 the low 16 bits, treated as a signed number, is negative. */
2015 HOWTO (R_PPC64_REL16_HA, /* type */
2016 16, /* rightshift */
2017 1, /* size (0 = byte, 1 = short, 2 = long) */
2018 16, /* bitsize */
2019 TRUE, /* pc_relative */
2020 0, /* bitpos */
f9c6b907 2021 complain_overflow_signed, /* complain_on_overflow */
25f23106
AM		 2022 ppc64_elf_ha_reloc, /* special_function */
2023 "R_PPC64_REL16_HA", /* name */
2024 FALSE, /* partial_inplace */
2025 0, /* src_mask */
2026 0xffff, /* dst_mask */
2027 TRUE), /* pcrel_offset */
2028
a680de9a
PB		 2029 /* Like R_PPC64_REL16_HA but for split field in addpcis. */
2030 HOWTO (R_PPC64_REL16DX_HA, /* type */
2031 16, /* rightshift */
2032 2, /* size (0 = byte, 1 = short, 2 = long) */
2033 16, /* bitsize */
2034 TRUE, /* pc_relative */
2035 0, /* bitpos */
2036 complain_overflow_signed, /* complain_on_overflow */
2037 ppc64_elf_ha_reloc, /* special_function */
2038 "R_PPC64_REL16DX_HA", /* name */
2039 FALSE, /* partial_inplace */
2040 0, /* src_mask */
2041 0x1fffc1, /* dst_mask */
2042 TRUE), /* pcrel_offset */
2043
f9c6b907
AM		 2044 /* Like R_PPC64_ADDR16_HI, but no overflow. */
2045 HOWTO (R_PPC64_ADDR16_HIGH, /* type */
2046 16, /* rightshift */
2047 1, /* size (0 = byte, 1 = short, 2 = long) */
2048 16, /* bitsize */
2049 FALSE, /* pc_relative */
2050 0, /* bitpos */
2051 complain_overflow_dont, /* complain_on_overflow */
2052 bfd_elf_generic_reloc, /* special_function */
2053 "R_PPC64_ADDR16_HIGH", /* name */
2054 FALSE, /* partial_inplace */
2055 0, /* src_mask */
2056 0xffff, /* dst_mask */
2057 FALSE), /* pcrel_offset */
2058
2059 /* Like R_PPC64_ADDR16_HA, but no overflow. */
2060 HOWTO (R_PPC64_ADDR16_HIGHA, /* type */
2061 16, /* rightshift */
2062 1, /* size (0 = byte, 1 = short, 2 = long) */
2063 16, /* bitsize */
2064 FALSE, /* pc_relative */
2065 0, /* bitpos */
2066 complain_overflow_dont, /* complain_on_overflow */
2067 ppc64_elf_ha_reloc, /* special_function */
2068 "R_PPC64_ADDR16_HIGHA", /* name */
2069 FALSE, /* partial_inplace */
2070 0, /* src_mask */
2071 0xffff, /* dst_mask */
2072 FALSE), /* pcrel_offset */
2073
2074 /* Like R_PPC64_DTPREL16_HI, but no overflow. */
2075 HOWTO (R_PPC64_DTPREL16_HIGH,
2076 16, /* rightshift */
2077 1, /* size (0 = byte, 1 = short, 2 = long) */
2078 16, /* bitsize */
2079 FALSE, /* pc_relative */
2080 0, /* bitpos */
2081 complain_overflow_dont, /* complain_on_overflow */
2082 ppc64_elf_unhandled_reloc, /* special_function */
2083 "R_PPC64_DTPREL16_HIGH", /* name */
2084 FALSE, /* partial_inplace */
2085 0, /* src_mask */
2086 0xffff, /* dst_mask */
2087 FALSE), /* pcrel_offset */
2088
2089 /* Like R_PPC64_DTPREL16_HA, but no overflow. */
2090 HOWTO (R_PPC64_DTPREL16_HIGHA,
2091 16, /* rightshift */
2092 1, /* size (0 = byte, 1 = short, 2 = long) */
2093 16, /* bitsize */
2094 FALSE, /* pc_relative */
2095 0, /* bitpos */
2096 complain_overflow_dont, /* complain_on_overflow */
2097 ppc64_elf_unhandled_reloc, /* special_function */
2098 "R_PPC64_DTPREL16_HIGHA", /* name */
2099 FALSE, /* partial_inplace */
2100 0, /* src_mask */
2101 0xffff, /* dst_mask */
2102 FALSE), /* pcrel_offset */
2103
2104 /* Like R_PPC64_TPREL16_HI, but no overflow. */
2105 HOWTO (R_PPC64_TPREL16_HIGH,
2106 16, /* rightshift */
2107 1, /* size (0 = byte, 1 = short, 2 = long) */
2108 16, /* bitsize */
2109 FALSE, /* pc_relative */
2110 0, /* bitpos */
2111 complain_overflow_dont, /* complain_on_overflow */
2112 ppc64_elf_unhandled_reloc, /* special_function */
2113 "R_PPC64_TPREL16_HIGH", /* name */
2114 FALSE, /* partial_inplace */
2115 0, /* src_mask */
2116 0xffff, /* dst_mask */
2117 FALSE), /* pcrel_offset */
2118
2119 /* Like R_PPC64_TPREL16_HA, but no overflow. */
2120 HOWTO (R_PPC64_TPREL16_HIGHA,
2121 16, /* rightshift */
2122 1, /* size (0 = byte, 1 = short, 2 = long) */
2123 16, /* bitsize */
2124 FALSE, /* pc_relative */
2125 0, /* bitpos */
2126 complain_overflow_dont, /* complain_on_overflow */
2127 ppc64_elf_unhandled_reloc, /* special_function */
2128 "R_PPC64_TPREL16_HIGHA", /* name */
2129 FALSE, /* partial_inplace */
2130 0, /* src_mask */
2131 0xffff, /* dst_mask */
2132 FALSE), /* pcrel_offset */
2133
006589cf
AM		 2134 /* Marker reloc on ELFv2 large-model function entry. */
2135 HOWTO (R_PPC64_ENTRY,
2136 0, /* rightshift */
2137 2, /* size (0 = byte, 1 = short, 2 = long) */
2138 32, /* bitsize */
2139 FALSE, /* pc_relative */
2140 0, /* bitpos */
2141 complain_overflow_dont, /* complain_on_overflow */
2142 bfd_elf_generic_reloc, /* special_function */
2143 "R_PPC64_ENTRY", /* name */
2144 FALSE, /* partial_inplace */
2145 0, /* src_mask */
2146 0, /* dst_mask */
2147 FALSE), /* pcrel_offset */
2148
45965137
AM		 2149 /* Like ADDR64, but use local entry point of function. */
2150 HOWTO (R_PPC64_ADDR64_LOCAL, /* type */
2151 0, /* rightshift */
2152 4, /* size (0=byte, 1=short, 2=long, 4=64 bits) */
2153 64, /* bitsize */
2154 FALSE, /* pc_relative */
2155 0, /* bitpos */
2156 complain_overflow_dont, /* complain_on_overflow */
2157 bfd_elf_generic_reloc, /* special_function */
2158 "R_PPC64_ADDR64_LOCAL", /* name */
2159 FALSE, /* partial_inplace */
2160 0, /* src_mask */
2161 ONES (64), /* dst_mask */
2162 FALSE), /* pcrel_offset */
2163
5bd4f169
AM		 2164 /* GNU extension to record C++ vtable hierarchy. */
2165 HOWTO (R_PPC64_GNU_VTINHERIT, /* type */
2166 0, /* rightshift */
2167 0, /* size (0 = byte, 1 = short, 2 = long) */
2168 0, /* bitsize */
b34976b6 2169 FALSE, /* pc_relative */
5bd4f169
AM		 2170 0, /* bitpos */
2171 complain_overflow_dont, /* complain_on_overflow */
2172 NULL, /* special_function */
2173 "R_PPC64_GNU_VTINHERIT", /* name */
b34976b6 2174 FALSE, /* partial_inplace */
5bd4f169
AM		 2175 0, /* src_mask */
2176 0, /* dst_mask */
b34976b6 2177 FALSE), /* pcrel_offset */
5bd4f169
AM		 2178
2179 /* GNU extension to record C++ vtable member usage. */
2180 HOWTO (R_PPC64_GNU_VTENTRY, /* type */
2181 0, /* rightshift */
2182 0, /* size (0 = byte, 1 = short, 2 = long) */
2183 0, /* bitsize */
b34976b6 2184 FALSE, /* pc_relative */
5bd4f169
AM		 2185 0, /* bitpos */
2186 complain_overflow_dont, /* complain_on_overflow */
2187 NULL, /* special_function */
2188 "R_PPC64_GNU_VTENTRY", /* name */
b34976b6 2189 FALSE, /* partial_inplace */
5bd4f169
AM		 2190 0, /* src_mask */
2191 0, /* dst_mask */
b34976b6 2192 FALSE), /* pcrel_offset */
5bd4f169
AM		 2193};
2194
2195\f
2196/* Initialize the ppc64_elf_howto_table, so that linear accesses can
2197 be done. */
2198
2199static void
4ce794b7 2200ppc_howto_init (void)
5bd4f169
AM		 2201{
2202 unsigned int i, type;
2203
a4b6fadd 2204 for (i = 0; i < ARRAY_SIZE (ppc64_elf_howto_raw); i++)
5bd4f169
AM		 2205 {
2206 type = ppc64_elf_howto_raw[i].type;
a4b6fadd 2207 BFD_ASSERT (type < ARRAY_SIZE (ppc64_elf_howto_table));
5bd4f169
AM		 2208 ppc64_elf_howto_table[type] = &ppc64_elf_howto_raw[i];
2209 }
2210}
2211
2212static reloc_howto_type *
4ce794b7
AM		 2213ppc64_elf_reloc_type_lookup (bfd *abfd ATTRIBUTE_UNUSED,
2214 bfd_reloc_code_real_type code)
5bd4f169 2215{
411e1bfb 2216 enum elf_ppc64_reloc_type r = R_PPC64_NONE;
5bd4f169
AM		 2217
2218 if (!ppc64_elf_howto_table[R_PPC64_ADDR32])
2219 /* Initialize howto table if needed. */
2220 ppc_howto_init ();
2221
4ce794b7 2222 switch (code)
5bd4f169
AM		 2223 {
2224 default:
4ce794b7 2225 return NULL;
5bd4f169 2226
411e1bfb
AM		 2227 case BFD_RELOC_NONE: r = R_PPC64_NONE;
2228 break;
2229 case BFD_RELOC_32: r = R_PPC64_ADDR32;
2230 break;
2231 case BFD_RELOC_PPC_BA26: r = R_PPC64_ADDR24;
2232 break;
2233 case BFD_RELOC_16: r = R_PPC64_ADDR16;
2234 break;
2235 case BFD_RELOC_LO16: r = R_PPC64_ADDR16_LO;
2236 break;
2237 case BFD_RELOC_HI16: r = R_PPC64_ADDR16_HI;
2238 break;
f9c6b907
AM		 2239 case BFD_RELOC_PPC64_ADDR16_HIGH: r = R_PPC64_ADDR16_HIGH;
2240 break;
411e1bfb 2241 case BFD_RELOC_HI16_S: r = R_PPC64_ADDR16_HA;
5bd4f169 2242 break;
f9c6b907
AM		 2243 case BFD_RELOC_PPC64_ADDR16_HIGHA: r = R_PPC64_ADDR16_HIGHA;
2244 break;
411e1bfb 2245 case BFD_RELOC_PPC_BA16: r = R_PPC64_ADDR14;
5bd4f169 2246 break;
411e1bfb 2247 case BFD_RELOC_PPC_BA16_BRTAKEN: r = R_PPC64_ADDR14_BRTAKEN;
5bd4f169 2248 break;
411e1bfb 2249 case BFD_RELOC_PPC_BA16_BRNTAKEN: r = R_PPC64_ADDR14_BRNTAKEN;
5bd4f169 2250 break;
411e1bfb 2251 case BFD_RELOC_PPC_B26: r = R_PPC64_REL24;
5bd4f169 2252 break;
411e1bfb 2253 case BFD_RELOC_PPC_B16: r = R_PPC64_REL14;
5bd4f169 2254 break;
411e1bfb 2255 case BFD_RELOC_PPC_B16_BRTAKEN: r = R_PPC64_REL14_BRTAKEN;
5bd4f169 2256 break;
411e1bfb 2257 case BFD_RELOC_PPC_B16_BRNTAKEN: r = R_PPC64_REL14_BRNTAKEN;
5bd4f169 2258 break;
411e1bfb 2259 case BFD_RELOC_16_GOTOFF: r = R_PPC64_GOT16;
5bd4f169 2260 break;
411e1bfb 2261 case BFD_RELOC_LO16_GOTOFF: r = R_PPC64_GOT16_LO;
5bd4f169 2262 break;
411e1bfb 2263 case BFD_RELOC_HI16_GOTOFF: r = R_PPC64_GOT16_HI;
5bd4f169 2264 break;
411e1bfb 2265 case BFD_RELOC_HI16_S_GOTOFF: r = R_PPC64_GOT16_HA;
5bd4f169 2266 break;
411e1bfb 2267 case BFD_RELOC_PPC_COPY: r = R_PPC64_COPY;
5bd4f169 2268 break;
411e1bfb 2269 case BFD_RELOC_PPC_GLOB_DAT: r = R_PPC64_GLOB_DAT;
5bd4f169 2270 break;
411e1bfb 2271 case BFD_RELOC_32_PCREL: r = R_PPC64_REL32;
5bd4f169 2272 break;
411e1bfb 2273 case BFD_RELOC_32_PLTOFF: r = R_PPC64_PLT32;
5bd4f169 2274 break;
411e1bfb 2275 case BFD_RELOC_32_PLT_PCREL: r = R_PPC64_PLTREL32;
5bd4f169 2276 break;
411e1bfb 2277 case BFD_RELOC_LO16_PLTOFF: r = R_PPC64_PLT16_LO;
5bd4f169 2278 break;
411e1bfb 2279 case BFD_RELOC_HI16_PLTOFF: r = R_PPC64_PLT16_HI;
5bd4f169 2280 break;
411e1bfb 2281 case BFD_RELOC_HI16_S_PLTOFF: r = R_PPC64_PLT16_HA;
5bd4f169 2282 break;
411e1bfb 2283 case BFD_RELOC_16_BASEREL: r = R_PPC64_SECTOFF;
5bd4f169 2284 break;
411e1bfb 2285 case BFD_RELOC_LO16_BASEREL: r = R_PPC64_SECTOFF_LO;
5bd4f169 2286 break;
411e1bfb 2287 case BFD_RELOC_HI16_BASEREL: r = R_PPC64_SECTOFF_HI;
5bd4f169 2288 break;
411e1bfb 2289 case BFD_RELOC_HI16_S_BASEREL: r = R_PPC64_SECTOFF_HA;
5bd4f169 2290 break;
411e1bfb 2291 case BFD_RELOC_CTOR: r = R_PPC64_ADDR64;
5bd4f169 2292 break;
411e1bfb 2293 case BFD_RELOC_64: r = R_PPC64_ADDR64;
5bd4f169 2294 break;
411e1bfb 2295 case BFD_RELOC_PPC64_HIGHER: r = R_PPC64_ADDR16_HIGHER;
5bd4f169 2296 break;
411e1bfb 2297 case BFD_RELOC_PPC64_HIGHER_S: r = R_PPC64_ADDR16_HIGHERA;
5bd4f169 2298 break;
411e1bfb 2299 case BFD_RELOC_PPC64_HIGHEST: r = R_PPC64_ADDR16_HIGHEST;
5bd4f169 2300 break;
411e1bfb 2301 case BFD_RELOC_PPC64_HIGHEST_S: r = R_PPC64_ADDR16_HIGHESTA;
5bd4f169 2302 break;
411e1bfb 2303 case BFD_RELOC_64_PCREL: r = R_PPC64_REL64;
5bd4f169 2304 break;
411e1bfb 2305 case BFD_RELOC_64_PLTOFF: r = R_PPC64_PLT64;
5bd4f169 2306 break;
411e1bfb 2307 case BFD_RELOC_64_PLT_PCREL: r = R_PPC64_PLTREL64;
5bd4f169 2308 break;
411e1bfb 2309 case BFD_RELOC_PPC_TOC16: r = R_PPC64_TOC16;
5bd4f169 2310 break;
411e1bfb 2311 case BFD_RELOC_PPC64_TOC16_LO: r = R_PPC64_TOC16_LO;
5bd4f169 2312 break;
411e1bfb 2313 case BFD_RELOC_PPC64_TOC16_HI: r = R_PPC64_TOC16_HI;
5bd4f169 2314 break;
411e1bfb 2315 case BFD_RELOC_PPC64_TOC16_HA: r = R_PPC64_TOC16_HA;
5bd4f169 2316 break;
411e1bfb 2317 case BFD_RELOC_PPC64_TOC: r = R_PPC64_TOC;
5bd4f169 2318 break;
411e1bfb 2319 case BFD_RELOC_PPC64_PLTGOT16: r = R_PPC64_PLTGOT16;
5bd4f169 2320 break;
411e1bfb 2321 case BFD_RELOC_PPC64_PLTGOT16_LO: r = R_PPC64_PLTGOT16_LO;
5bd4f169 2322 break;
411e1bfb 2323 case BFD_RELOC_PPC64_PLTGOT16_HI: r = R_PPC64_PLTGOT16_HI;
5bd4f169 2324 break;
411e1bfb 2325 case BFD_RELOC_PPC64_PLTGOT16_HA: r = R_PPC64_PLTGOT16_HA;
5bd4f169 2326 break;
411e1bfb 2327 case BFD_RELOC_PPC64_ADDR16_DS: r = R_PPC64_ADDR16_DS;
5bd4f169 2328 break;
411e1bfb 2329 case BFD_RELOC_PPC64_ADDR16_LO_DS: r = R_PPC64_ADDR16_LO_DS;
5bd4f169 2330 break;
411e1bfb 2331 case BFD_RELOC_PPC64_GOT16_DS: r = R_PPC64_GOT16_DS;
5bd4f169 2332 break;
411e1bfb 2333 case BFD_RELOC_PPC64_GOT16_LO_DS: r = R_PPC64_GOT16_LO_DS;
5bd4f169 2334 break;
411e1bfb 2335 case BFD_RELOC_PPC64_PLT16_LO_DS: r = R_PPC64_PLT16_LO_DS;
5bd4f169 2336 break;
411e1bfb 2337 case BFD_RELOC_PPC64_SECTOFF_DS: r = R_PPC64_SECTOFF_DS;
5bd4f169 2338 break;
411e1bfb 2339 case BFD_RELOC_PPC64_SECTOFF_LO_DS: r = R_PPC64_SECTOFF_LO_DS;
5bd4f169 2340 break;
411e1bfb 2341 case BFD_RELOC_PPC64_TOC16_DS: r = R_PPC64_TOC16_DS;
5bd4f169 2342 break;
411e1bfb 2343 case BFD_RELOC_PPC64_TOC16_LO_DS: r = R_PPC64_TOC16_LO_DS;
5bd4f169 2344 break;
411e1bfb 2345 case BFD_RELOC_PPC64_PLTGOT16_DS: r = R_PPC64_PLTGOT16_DS;
5bd4f169 2346 break;
411e1bfb 2347 case BFD_RELOC_PPC64_PLTGOT16_LO_DS: r = R_PPC64_PLTGOT16_LO_DS;
5bd4f169 2348 break;
411e1bfb 2349 case BFD_RELOC_PPC_TLS: r = R_PPC64_TLS;
5bd4f169 2350 break;
727fc41e
AM		 2351 case BFD_RELOC_PPC_TLSGD: r = R_PPC64_TLSGD;
2352 break;
2353 case BFD_RELOC_PPC_TLSLD: r = R_PPC64_TLSLD;
2354 break;
411e1bfb 2355 case BFD_RELOC_PPC_DTPMOD: r = R_PPC64_DTPMOD64;
5bd4f169 2356 break;
411e1bfb 2357 case BFD_RELOC_PPC_TPREL16: r = R_PPC64_TPREL16;
5bd4f169 2358 break;
411e1bfb 2359 case BFD_RELOC_PPC_TPREL16_LO: r = R_PPC64_TPREL16_LO;
5bd4f169 2360 break;
411e1bfb 2361 case BFD_RELOC_PPC_TPREL16_HI: r = R_PPC64_TPREL16_HI;
5bd4f169 2362 break;
f9c6b907
AM		 2363 case BFD_RELOC_PPC64_TPREL16_HIGH: r = R_PPC64_TPREL16_HIGH;
2364 break;
411e1bfb 2365 case BFD_RELOC_PPC_TPREL16_HA: r = R_PPC64_TPREL16_HA;
5bd4f169 2366 break;
f9c6b907
AM		 2367 case BFD_RELOC_PPC64_TPREL16_HIGHA: r = R_PPC64_TPREL16_HIGHA;
2368 break;
411e1bfb 2369 case BFD_RELOC_PPC_TPREL: r = R_PPC64_TPREL64;
5bd4f169 2370 break;
411e1bfb
AM		 2371 case BFD_RELOC_PPC_DTPREL16: r = R_PPC64_DTPREL16;
2372 break;
2373 case BFD_RELOC_PPC_DTPREL16_LO: r = R_PPC64_DTPREL16_LO;
2374 break;
2375 case BFD_RELOC_PPC_DTPREL16_HI: r = R_PPC64_DTPREL16_HI;
2376 break;
f9c6b907
AM		 2377 case BFD_RELOC_PPC64_DTPREL16_HIGH: r = R_PPC64_DTPREL16_HIGH;
2378 break;
411e1bfb
AM		 2379 case BFD_RELOC_PPC_DTPREL16_HA: r = R_PPC64_DTPREL16_HA;
2380 break;
f9c6b907
AM		 2381 case BFD_RELOC_PPC64_DTPREL16_HIGHA: r = R_PPC64_DTPREL16_HIGHA;
2382 break;
411e1bfb
AM		 2383 case BFD_RELOC_PPC_DTPREL: r = R_PPC64_DTPREL64;
2384 break;
2385 case BFD_RELOC_PPC_GOT_TLSGD16: r = R_PPC64_GOT_TLSGD16;
2386 break;
2387 case BFD_RELOC_PPC_GOT_TLSGD16_LO: r = R_PPC64_GOT_TLSGD16_LO;
2388 break;
2389 case BFD_RELOC_PPC_GOT_TLSGD16_HI: r = R_PPC64_GOT_TLSGD16_HI;
2390 break;
2391 case BFD_RELOC_PPC_GOT_TLSGD16_HA: r = R_PPC64_GOT_TLSGD16_HA;
2392 break;
2393 case BFD_RELOC_PPC_GOT_TLSLD16: r = R_PPC64_GOT_TLSLD16;
2394 break;
2395 case BFD_RELOC_PPC_GOT_TLSLD16_LO: r = R_PPC64_GOT_TLSLD16_LO;
2396 break;
2397 case BFD_RELOC_PPC_GOT_TLSLD16_HI: r = R_PPC64_GOT_TLSLD16_HI;
2398 break;
2399 case BFD_RELOC_PPC_GOT_TLSLD16_HA: r = R_PPC64_GOT_TLSLD16_HA;
2400 break;
2401 case BFD_RELOC_PPC_GOT_TPREL16: r = R_PPC64_GOT_TPREL16_DS;
2402 break;
2403 case BFD_RELOC_PPC_GOT_TPREL16_LO: r = R_PPC64_GOT_TPREL16_LO_DS;
2404 break;
2405 case BFD_RELOC_PPC_GOT_TPREL16_HI: r = R_PPC64_GOT_TPREL16_HI;
2406 break;
2407 case BFD_RELOC_PPC_GOT_TPREL16_HA: r = R_PPC64_GOT_TPREL16_HA;
2408 break;
2409 case BFD_RELOC_PPC_GOT_DTPREL16: r = R_PPC64_GOT_DTPREL16_DS;
2410 break;
2411 case BFD_RELOC_PPC_GOT_DTPREL16_LO: r = R_PPC64_GOT_DTPREL16_LO_DS;
2412 break;
2413 case BFD_RELOC_PPC_GOT_DTPREL16_HI: r = R_PPC64_GOT_DTPREL16_HI;
2414 break;
2415 case BFD_RELOC_PPC_GOT_DTPREL16_HA: r = R_PPC64_GOT_DTPREL16_HA;
2416 break;
2417 case BFD_RELOC_PPC64_TPREL16_DS: r = R_PPC64_TPREL16_DS;
2418 break;
2419 case BFD_RELOC_PPC64_TPREL16_LO_DS: r = R_PPC64_TPREL16_LO_DS;
2420 break;
2421 case BFD_RELOC_PPC64_TPREL16_HIGHER: r = R_PPC64_TPREL16_HIGHER;
2422 break;
2423 case BFD_RELOC_PPC64_TPREL16_HIGHERA: r = R_PPC64_TPREL16_HIGHERA;
2424 break;
2425 case BFD_RELOC_PPC64_TPREL16_HIGHEST: r = R_PPC64_TPREL16_HIGHEST;
2426 break;
2427 case BFD_RELOC_PPC64_TPREL16_HIGHESTA: r = R_PPC64_TPREL16_HIGHESTA;
2428 break;
2429 case BFD_RELOC_PPC64_DTPREL16_DS: r = R_PPC64_DTPREL16_DS;
2430 break;
2431 case BFD_RELOC_PPC64_DTPREL16_LO_DS: r = R_PPC64_DTPREL16_LO_DS;
2432 break;
2433 case BFD_RELOC_PPC64_DTPREL16_HIGHER: r = R_PPC64_DTPREL16_HIGHER;
2434 break;
2435 case BFD_RELOC_PPC64_DTPREL16_HIGHERA: r = R_PPC64_DTPREL16_HIGHERA;
2436 break;
2437 case BFD_RELOC_PPC64_DTPREL16_HIGHEST: r = R_PPC64_DTPREL16_HIGHEST;
2438 break;
2439 case BFD_RELOC_PPC64_DTPREL16_HIGHESTA: r = R_PPC64_DTPREL16_HIGHESTA;
2440 break;
25f23106
AM		 2441 case BFD_RELOC_16_PCREL: r = R_PPC64_REL16;
2442 break;
2443 case BFD_RELOC_LO16_PCREL: r = R_PPC64_REL16_LO;
2444 break;
2445 case BFD_RELOC_HI16_PCREL: r = R_PPC64_REL16_HI;
2446 break;
2447 case BFD_RELOC_HI16_S_PCREL: r = R_PPC64_REL16_HA;
2448 break;
a680de9a
PB		 2449 case BFD_RELOC_PPC_REL16DX_HA: r = R_PPC64_REL16DX_HA;
2450 break;
006589cf
AM		 2451 case BFD_RELOC_PPC64_ENTRY: r = R_PPC64_ENTRY;
2452 break;
45965137
AM		 2453 case BFD_RELOC_PPC64_ADDR64_LOCAL: r = R_PPC64_ADDR64_LOCAL;
2454 break;
411e1bfb
AM		 2455 case BFD_RELOC_VTABLE_INHERIT: r = R_PPC64_GNU_VTINHERIT;
2456 break;
2457 case BFD_RELOC_VTABLE_ENTRY: r = R_PPC64_GNU_VTENTRY;
5bd4f169
AM		 2458 break;
2459 }
2460
4ce794b7 2461 return ppc64_elf_howto_table[r];
5bd4f169
AM		 2462};
2463
157090f7
AM		 2464static reloc_howto_type *
2465ppc64_elf_reloc_name_lookup (bfd *abfd ATTRIBUTE_UNUSED,
2466 const char *r_name)
2467{
2468 unsigned int i;
2469
a4b6fadd 2470 for (i = 0; i < ARRAY_SIZE (ppc64_elf_howto_raw); i++)
157090f7
AM		 2471 if (ppc64_elf_howto_raw[i].name != NULL
2472 && strcasecmp (ppc64_elf_howto_raw[i].name, r_name) == 0)
2473 return &ppc64_elf_howto_raw[i];
2474
2475 return NULL;
2476}
2477
5bd4f169
AM		 2478/* Set the howto pointer for a PowerPC ELF reloc. */
2479
2480static void
4ce794b7
AM		 2481ppc64_elf_info_to_howto (bfd *abfd ATTRIBUTE_UNUSED, arelent *cache_ptr,
2482 Elf_Internal_Rela *dst)
5bd4f169 2483{
65f38f15
AM		 2484 unsigned int type;
2485
ef60b7ff 2486 /* Initialize howto table if needed. */
5bd4f169 2487 if (!ppc64_elf_howto_table[R_PPC64_ADDR32])
5bd4f169
AM		 2488 ppc_howto_init ();
2489
65f38f15 2490 type = ELF64_R_TYPE (dst->r_info);
a4b6fadd 2491 if (type >= ARRAY_SIZE (ppc64_elf_howto_table))
d0fb9a8d 2492 {
4eca0228
AM		 2493 _bfd_error_handler (_("%B: invalid relocation type %d"),
2494 abfd, (int) type);
3ec2b351 2495 type = R_PPC64_NONE;
d0fb9a8d 2496 }
65f38f15 2497 cache_ptr->howto = ppc64_elf_howto_table[type];
5bd4f169
AM		 2498}
2499
04c9666a 2500/* Handle the R_PPC64_ADDR16_HA and similar relocs. */
5bd4f169
AM		 2501
2502static bfd_reloc_status_type
4ce794b7
AM		 2503ppc64_elf_ha_reloc (bfd *abfd, arelent *reloc_entry, asymbol *symbol,
2504 void *data, asection *input_section,
2505 bfd *output_bfd, char **error_message)
5bd4f169 2506{
a680de9a
PB		 2507 enum elf_ppc64_reloc_type r_type;
2508 long insn;
2509 bfd_size_type octets;
2510 bfd_vma value;
2511
805fc799
AM		 2512 /* If this is a relocatable link (output_bfd test tells us), just
2513 call the generic function. Any adjustment will be done at final
2514 link time. */
2515 if (output_bfd != NULL)
cedb70c5 2516 return bfd_elf_generic_reloc (abfd, reloc_entry, symbol, data,
805fc799
AM		 2517 input_section, output_bfd, error_message);
2518
2519 /* Adjust the addend for sign extension of the low 16 bits.
2520 We won't actually be using the low 16 bits, so trashing them
2521 doesn't matter. */
2522 reloc_entry->addend += 0x8000;
a680de9a
PB		 2523 r_type = reloc_entry->howto->type;
2524 if (r_type != R_PPC64_REL16DX_HA)
2525 return bfd_reloc_continue;
2526
2527 value = 0;
2528 if (!bfd_is_com_section (symbol->section))
2529 value = symbol->value;
2530 value += (reloc_entry->addend
2531 + symbol->section->output_offset
2532 + symbol->section->output_section->vma);
2533 value -= (reloc_entry->address
2534 + input_section->output_offset
2535 + input_section->output_section->vma);
2536 value = (bfd_signed_vma) value >> 16;
2537
2538 octets = reloc_entry->address * bfd_octets_per_byte (abfd);
2539 insn = bfd_get_32 (abfd, (bfd_byte *) data + octets);
2540 insn &= ~0x1fffc1;
2541 insn |= (value & 0xffc1) | ((value & 0x3e) << 15);
2542 bfd_put_32 (abfd, insn, (bfd_byte *) data + octets);
2543 if (value + 0x8000 > 0xffff)
2544 return bfd_reloc_overflow;
2545 return bfd_reloc_ok;
805fc799 2546}
5bd4f169 2547
2441e016
AM		 2548static bfd_reloc_status_type
2549ppc64_elf_branch_reloc (bfd *abfd, arelent *reloc_entry, asymbol *symbol,
2550 void *data, asection *input_section,
2551 bfd *output_bfd, char **error_message)
2552{
2553 if (output_bfd != NULL)
2554 return bfd_elf_generic_reloc (abfd, reloc_entry, symbol, data,
2555 input_section, output_bfd, error_message);
2556
699733f6
AM		 2557 if (strcmp (symbol->section->name, ".opd") == 0
2558 && (symbol->section->owner->flags & DYNAMIC) == 0)
2441e016
AM		 2559 {
2560 bfd_vma dest = opd_entry_value (symbol->section,
2561 symbol->value + reloc_entry->addend,
aef36ac1 2562 NULL, NULL, FALSE);
2441e016
AM		 2563 if (dest != (bfd_vma) -1)
2564 reloc_entry->addend = dest - (symbol->value
2565 + symbol->section->output_section->vma
2566 + symbol->section->output_offset);
2567 }
810d4e75
AM		 2568 else
2569 {
2570 elf_symbol_type *elfsym = (elf_symbol_type *) symbol;
2571
2572 if (symbol->section->owner != abfd
9f284bf9 2573 && symbol->section->owner != NULL
810d4e75
AM		 2574 && abiversion (symbol->section->owner) >= 2)
2575 {
2576 unsigned int i;
2577
2578 for (i = 0; i < symbol->section->owner->symcount; ++i)
2579 {
2580 asymbol *symdef = symbol->section->owner->outsymbols[i];
2581
2582 if (strcmp (symdef->name, symbol->name) == 0)
2583 {
2584 elfsym = (elf_symbol_type *) symdef;
2585 break;
2586 }
2587 }
2588 }
2589 reloc_entry->addend
2590 += PPC64_LOCAL_ENTRY_OFFSET (elfsym->internal_elf_sym.st_other);
2591 }
2441e016
AM		 2592 return bfd_reloc_continue;
2593}
2594
805fc799 2595static bfd_reloc_status_type
4ce794b7
AM		 2596ppc64_elf_brtaken_reloc (bfd *abfd, arelent *reloc_entry, asymbol *symbol,
2597 void *data, asection *input_section,
2598 bfd *output_bfd, char **error_message)
805fc799
AM		 2599{
2600 long insn;
04c9666a 2601 enum elf_ppc64_reloc_type r_type;
805fc799 2602 bfd_size_type octets;
794e51c0
AM		 2603 /* Assume 'at' branch hints. */
2604 bfd_boolean is_isa_v2 = TRUE;
805fc799
AM		 2605
2606 /* If this is a relocatable link (output_bfd test tells us), just
2607 call the generic function. Any adjustment will be done at final
2608 link time. */
5bd4f169 2609 if (output_bfd != NULL)
cedb70c5 2610 return bfd_elf_generic_reloc (abfd, reloc_entry, symbol, data,
805fc799
AM		 2611 input_section, output_bfd, error_message);
2612
2613 octets = reloc_entry->address * bfd_octets_per_byte (abfd);
2614 insn = bfd_get_32 (abfd, (bfd_byte *) data + octets);
2615 insn &= ~(0x01 << 21);
4ce794b7 2616 r_type = reloc_entry->howto->type;
805fc799
AM		 2617 if (r_type == R_PPC64_ADDR14_BRTAKEN
2618 || r_type == R_PPC64_REL14_BRTAKEN)
cedb70c5 2619 insn |= 0x01 << 21; /* 'y' or 't' bit, lowest bit of BO field. */
805fc799 2620
794e51c0 2621 if (is_isa_v2)
5bd4f169 2622 {
805fc799
AM		 2623 /* Set 'a' bit. This is 0b00010 in BO field for branch
2624 on CR(BI) insns (BO == 001at or 011at), and 0b01000
2625 for branch on CTR insns (BO == 1a00t or 1a01t). */
2626 if ((insn & (0x14 << 21)) == (0x04 << 21))
2627 insn |= 0x02 << 21;
2628 else if ((insn & (0x14 << 21)) == (0x10 << 21))
2629 insn |= 0x08 << 21;
2630 else
2441e016 2631 goto out;
5bd4f169 2632 }
805fc799
AM		 2633 else
2634 {
2635 bfd_vma target = 0;
2636 bfd_vma from;
5bd4f169 2637
805fc799
AM		 2638 if (!bfd_is_com_section (symbol->section))
2639 target = symbol->value;
2640 target += symbol->section->output_section->vma;
2641 target += symbol->section->output_offset;
2642 target += reloc_entry->addend;
5bd4f169 2643
805fc799
AM		 2644 from = (reloc_entry->address
2645 + input_section->output_offset
2646 + input_section->output_section->vma);
5bd4f169 2647
805fc799
AM		 2648 /* Invert 'y' bit if not the default. */
2649 if ((bfd_signed_vma) (target - from) < 0)
2650 insn ^= 0x01 << 21;
2651 }
4ce794b7 2652 bfd_put_32 (abfd, insn, (bfd_byte *) data + octets);
2441e016
AM		 2653 out:
2654 return ppc64_elf_branch_reloc (abfd, reloc_entry, symbol, data,
2655 input_section, output_bfd, error_message);
805fc799 2656}
5bd4f169 2657
805fc799 2658static bfd_reloc_status_type
4ce794b7
AM		 2659ppc64_elf_sectoff_reloc (bfd *abfd, arelent *reloc_entry, asymbol *symbol,
2660 void *data, asection *input_section,
2661 bfd *output_bfd, char **error_message)
805fc799
AM		 2662{
2663 /* If this is a relocatable link (output_bfd test tells us), just
2664 call the generic function. Any adjustment will be done at final
2665 link time. */
2666 if (output_bfd != NULL)
cedb70c5 2667 return bfd_elf_generic_reloc (abfd, reloc_entry, symbol, data,
805fc799 2668 input_section, output_bfd, error_message);
5bd4f169 2669
805fc799
AM		 2670 /* Subtract the symbol section base address. */
2671 reloc_entry->addend -= symbol->section->output_section->vma;
5bd4f169
AM		 2672 return bfd_reloc_continue;
2673}
2674
805fc799 2675static bfd_reloc_status_type
4ce794b7
AM		 2676ppc64_elf_sectoff_ha_reloc (bfd *abfd, arelent *reloc_entry, asymbol *symbol,
2677 void *data, asection *input_section,
2678 bfd *output_bfd, char **error_message)
805fc799
AM		 2679{
2680 /* If this is a relocatable link (output_bfd test tells us), just
2681 call the generic function. Any adjustment will be done at final
2682 link time. */
2683 if (output_bfd != NULL)
cedb70c5 2684 return bfd_elf_generic_reloc (abfd, reloc_entry, symbol, data,
805fc799
AM		 2685 input_section, output_bfd, error_message);
2686
2687 /* Subtract the symbol section base address. */
2688 reloc_entry->addend -= symbol->section->output_section->vma;
2689
2690 /* Adjust the addend for sign extension of the low 16 bits. */
2691 reloc_entry->addend += 0x8000;
2692 return bfd_reloc_continue;
2693}
2694
2695static bfd_reloc_status_type
4ce794b7
AM		 2696ppc64_elf_toc_reloc (bfd *abfd, arelent *reloc_entry, asymbol *symbol,
2697 void *data, asection *input_section,
2698 bfd *output_bfd, char **error_message)
805fc799
AM		 2699{
2700 bfd_vma TOCstart;
2701
2702 /* If this is a relocatable link (output_bfd test tells us), just
2703 call the generic function. Any adjustment will be done at final
2704 link time. */
2705 if (output_bfd != NULL)
cedb70c5 2706 return bfd_elf_generic_reloc (abfd, reloc_entry, symbol, data,
805fc799
AM		 2707 input_section, output_bfd, error_message);
2708
2709 TOCstart = _bfd_get_gp_value (input_section->output_section->owner);
2710 if (TOCstart == 0)
1c865ab2 2711 TOCstart = ppc64_elf_set_toc (NULL, input_section->output_section->owner);
805fc799
AM		 2712
2713 /* Subtract the TOC base address. */
2714 reloc_entry->addend -= TOCstart + TOC_BASE_OFF;
2715 return bfd_reloc_continue;
2716}
2717
2718static bfd_reloc_status_type
4ce794b7
AM		 2719ppc64_elf_toc_ha_reloc (bfd *abfd, arelent *reloc_entry, asymbol *symbol,
2720 void *data, asection *input_section,
2721 bfd *output_bfd, char **error_message)
805fc799
AM		 2722{
2723 bfd_vma TOCstart;
2724
2725 /* If this is a relocatable link (output_bfd test tells us), just
2726 call the generic function. Any adjustment will be done at final
2727 link time. */
2728 if (output_bfd != NULL)
cedb70c5 2729 return bfd_elf_generic_reloc (abfd, reloc_entry, symbol, data,
805fc799
AM		 2730 input_section, output_bfd, error_message);
2731
2732 TOCstart = _bfd_get_gp_value (input_section->output_section->owner);
2733 if (TOCstart == 0)
1c865ab2 2734 TOCstart = ppc64_elf_set_toc (NULL, input_section->output_section->owner);
805fc799
AM		 2735
2736 /* Subtract the TOC base address. */
2737 reloc_entry->addend -= TOCstart + TOC_BASE_OFF;
2738
2739 /* Adjust the addend for sign extension of the low 16 bits. */
2740 reloc_entry->addend += 0x8000;
2741 return bfd_reloc_continue;
2742}
2743
2744static bfd_reloc_status_type
4ce794b7
AM		 2745ppc64_elf_toc64_reloc (bfd *abfd, arelent *reloc_entry, asymbol *symbol,
2746 void *data, asection *input_section,
2747 bfd *output_bfd, char **error_message)
805fc799
AM		 2748{
2749 bfd_vma TOCstart;
2750 bfd_size_type octets;
2751
2752 /* If this is a relocatable link (output_bfd test tells us), just
2753 call the generic function. Any adjustment will be done at final
2754 link time. */
2755 if (output_bfd != NULL)
cedb70c5 2756 return bfd_elf_generic_reloc (abfd, reloc_entry, symbol, data,
805fc799
AM		 2757 input_section, output_bfd, error_message);
2758
2759 TOCstart = _bfd_get_gp_value (input_section->output_section->owner);
2760 if (TOCstart == 0)
1c865ab2 2761 TOCstart = ppc64_elf_set_toc (NULL, input_section->output_section->owner);
805fc799
AM		 2762
2763 octets = reloc_entry->address * bfd_octets_per_byte (abfd);
2764 bfd_put_64 (abfd, TOCstart + TOC_BASE_OFF, (bfd_byte *) data + octets);
2765 return bfd_reloc_ok;
2766}
2767
2768static bfd_reloc_status_type
4ce794b7
AM		 2769ppc64_elf_unhandled_reloc (bfd *abfd, arelent *reloc_entry, asymbol *symbol,
2770 void *data, asection *input_section,
2771 bfd *output_bfd, char **error_message)
805fc799
AM		 2772{
2773 /* If this is a relocatable link (output_bfd test tells us), just
2774 call the generic function. Any adjustment will be done at final
2775 link time. */
2776 if (output_bfd != NULL)
cedb70c5 2777 return bfd_elf_generic_reloc (abfd, reloc_entry, symbol, data,
805fc799
AM		 2778 input_section, output_bfd, error_message);
2779
2780 if (error_message != NULL)
2781 {
2782 static char buf[60];
2783 sprintf (buf, "generic linker can't handle %s",
2784 reloc_entry->howto->name);
2785 *error_message = buf;
2786 }
2787 return bfd_reloc_dangerous;
2788}
2789
927be08e
AM		 2790/* Track GOT entries needed for a given symbol. We might need more
2791 than one got entry per symbol. */
2792struct got_entry
2793{
2794 struct got_entry *next;
2795
2796 /* The symbol addend that we'll be placing in the GOT. */
2797 bfd_vma addend;
2798
2799 /* Unlike other ELF targets, we use separate GOT entries for the same
2800 symbol referenced from different input files. This is to support
2801 automatic multiple TOC/GOT sections, where the TOC base can vary
2802 from one input file to another. After partitioning into TOC groups
2803 we merge entries within the group.
2804
2805 Point to the BFD owning this GOT entry. */
2806 bfd *owner;
2807
2808 /* Zero for non-tls entries, or TLS_TLS and one of TLS_GD, TLS_LD,
2809 TLS_TPREL or TLS_DTPREL for tls entries. */
f961d9dd 2810 unsigned char tls_type;
927be08e
AM		 2811
2812 /* Non-zero if got.ent points to real entry. */
f961d9dd 2813 unsigned char is_indirect;
927be08e
AM		 2814
2815 /* Reference count until size_dynamic_sections, GOT offset thereafter. */
2816 union
2817 {
2818 bfd_signed_vma refcount;
2819 bfd_vma offset;
2820 struct got_entry *ent;
2821 } got;
2822};
2823
2824/* The same for PLT. */
2825struct plt_entry
2826{
2827 struct plt_entry *next;
2828
2829 bfd_vma addend;
2830
2831 union
2832 {
2833 bfd_signed_vma refcount;
2834 bfd_vma offset;
2835 } plt;
2836};
2837
e717da7e
AM		 2838struct ppc64_elf_obj_tdata
2839{
2840 struct elf_obj_tdata elf;
2841
2842 /* Shortcuts to dynamic linker sections. */
2843 asection *got;
2844 asection *relgot;
2845
b3fac117
AM		 2846 /* Used during garbage collection. We attach global symbols defined
2847 on removed .opd entries to this section so that the sym is removed. */
2848 asection *deleted_section;
81688140 2849
927be08e 2850 /* TLS local dynamic got entry handling. Support for multiple GOT
e717da7e 2851 sections means we potentially need one of these for each input bfd. */
927be08e 2852 struct got_entry tlsld_got;
8860955f 2853
729eabd5
AM		 2854 union {
2855 /* A copy of relocs before they are modified for --emit-relocs. */
2856 Elf_Internal_Rela *relocs;
2857
2858 /* Section contents. */
2859 bfd_byte *contents;
2860 } opd;
d77c8a4b
AM		 2861
2862 /* Nonzero if this bfd has small toc/got relocs, ie. that expect
2863 the reloc to be in the range -32768 to 32767. */
98528052
AM		 2864 unsigned int has_small_toc_reloc : 1;
2865
560c8763
AM		 2866 /* Set if toc/got ha relocs detected not using r2, or lo reloc
2867 instruction not one we handle. */
2868 unsigned int unexpected_toc_insn : 1;
e717da7e
AM		 2869};
2870
2871#define ppc64_elf_tdata(bfd) \
2872 ((struct ppc64_elf_obj_tdata *) (bfd)->tdata.any)
2873
2874#define ppc64_tlsld_got(bfd) \
2875 (&ppc64_elf_tdata (bfd)->tlsld_got)
2876
0c8d6e5c
AM		 2877#define is_ppc64_elf(bfd) \
2878 (bfd_get_flavour (bfd) == bfd_target_elf_flavour \
4dfe6ac6 2879 && elf_object_id (bfd) == PPC64_ELF_DATA)
0c8d6e5c 2880
e717da7e
AM		 2881/* Override the generic function because we store some extras. */
2882
2883static bfd_boolean
2884ppc64_elf_mkobject (bfd *abfd)
2885{
0ffa91dd 2886 return bfd_elf_allocate_object (abfd, sizeof (struct ppc64_elf_obj_tdata),
4dfe6ac6 2887 PPC64_ELF_DATA);
e717da7e
AM		 2888}
2889
feee612b 2890/* Fix bad default arch selected for a 64 bit input bfd when the
14b57c7c 2891 default is 32 bit. Also select arch based on apuinfo. */
feee612b 2892
b34976b6 2893static bfd_boolean
4ce794b7 2894ppc64_elf_object_p (bfd *abfd)
feee612b 2895{
14b57c7c
AM		 2896 if (!abfd->arch_info->the_default)
2897 return TRUE;
2898
2899 if (abfd->arch_info->bits_per_word == 32)
feee612b
AM		 2900 {
2901 Elf_Internal_Ehdr *i_ehdr = elf_elfheader (abfd);
2902
2903 if (i_ehdr->e_ident[EI_CLASS] == ELFCLASS64)
2904 {
2905 /* Relies on arch after 32 bit default being 64 bit default. */
2906 abfd->arch_info = abfd->arch_info->next;
2907 BFD_ASSERT (abfd->arch_info->bits_per_word == 64);
2908 }
2909 }
14b57c7c 2910 return _bfd_elf_ppc_set_arch (abfd);
feee612b
AM		 2911}
2912
d37c89e5
AM		 2913/* Support for core dump NOTE sections. */
2914
2915static bfd_boolean
2916ppc64_elf_grok_prstatus (bfd *abfd, Elf_Internal_Note *note)
2917{
eea6121a 2918 size_t offset, size;
d37c89e5
AM		 2919
2920 if (note->descsz != 504)
2921 return FALSE;
2922
2923 /* pr_cursig */
228e534f 2924 elf_tdata (abfd)->core->signal = bfd_get_16 (abfd, note->descdata + 12);
d37c89e5
AM		 2925
2926 /* pr_pid */
228e534f 2927 elf_tdata (abfd)->core->lwpid = bfd_get_32 (abfd, note->descdata + 32);
d37c89e5
AM		 2928
2929 /* pr_reg */
2930 offset = 112;
eea6121a 2931 size = 384;
d37c89e5
AM		 2932
2933 /* Make a ".reg/999" section. */
2934 return _bfd_elfcore_make_pseudosection (abfd, ".reg",
eea6121a 2935 size, note->descpos + offset);
d37c89e5
AM		 2936}
2937
2938static bfd_boolean
2939ppc64_elf_grok_psinfo (bfd *abfd, Elf_Internal_Note *note)
2940{
2941 if (note->descsz != 136)
2942 return FALSE;
2943
228e534f 2944 elf_tdata (abfd)->core->pid
bc989cdc 2945 = bfd_get_32 (abfd, note->descdata + 24);
228e534f 2946 elf_tdata (abfd)->core->program
d37c89e5 2947 = _bfd_elfcore_strndup (abfd, note->descdata + 40, 16);
228e534f 2948 elf_tdata (abfd)->core->command
d37c89e5
AM		 2949 = _bfd_elfcore_strndup (abfd, note->descdata + 56, 80);
2950
2951 return TRUE;
2952}
2953
183e98be
AM		 2954static char *
2955ppc64_elf_write_core_note (bfd *abfd, char *buf, int *bufsiz, int note_type,
2956 ...)
2957{
2958 switch (note_type)
2959 {
2960 default:
2961 return NULL;
2962
2963 case NT_PRPSINFO:
2964 {
2965 char data[136];
2966 va_list ap;
2967
2968 va_start (ap, note_type);
75cd47ed 2969 memset (data, 0, sizeof (data));
183e98be
AM		 2970 strncpy (data + 40, va_arg (ap, const char *), 16);
2971 strncpy (data + 56, va_arg (ap, const char *), 80);
2972 va_end (ap);
2973 return elfcore_write_note (abfd, buf, bufsiz,
2974 "CORE", note_type, data, sizeof (data));
2975 }
2976
2977 case NT_PRSTATUS:
2978 {
2979 char data[504];
2980 va_list ap;
2981 long pid;
2982 int cursig;
2983 const void *greg;
2984
2985 va_start (ap, note_type);
2986 memset (data, 0, 112);
2987 pid = va_arg (ap, long);
2988 bfd_put_32 (abfd, pid, data + 32);
2989 cursig = va_arg (ap, int);
2990 bfd_put_16 (abfd, cursig, data + 12);
2991 greg = va_arg (ap, const void *);
2992 memcpy (data + 112, greg, 384);
2993 memset (data + 496, 0, 8);
2994 va_end (ap);
2995 return elfcore_write_note (abfd, buf, bufsiz,
2996 "CORE", note_type, data, sizeof (data));
2997 }
2998 }
2999}
3000
5d35169e
AM		 3001/* Add extra PPC sections. */
3002
b35d266b 3003static const struct bfd_elf_special_section ppc64_elf_special_sections[]=
7f4d3958 3004{
0112cd26
NC		 3005 { STRING_COMMA_LEN (".plt"), 0, SHT_NOBITS, 0 },
3006 { STRING_COMMA_LEN (".sbss"), -2, SHT_NOBITS, SHF_ALLOC + SHF_WRITE },
3007 { STRING_COMMA_LEN (".sdata"), -2, SHT_PROGBITS, SHF_ALLOC + SHF_WRITE },
3008 { STRING_COMMA_LEN (".toc"), 0, SHT_PROGBITS, SHF_ALLOC + SHF_WRITE },
3009 { STRING_COMMA_LEN (".toc1"), 0, SHT_PROGBITS, SHF_ALLOC + SHF_WRITE },
3010 { STRING_COMMA_LEN (".tocbss"), 0, SHT_NOBITS, SHF_ALLOC + SHF_WRITE },
3011 { NULL, 0, 0, 0, 0 }
5d35169e
AM		 3012};
3013
7c8fe5c4
AM		 3014enum _ppc64_sec_type {
3015 sec_normal = 0,
3016 sec_opd = 1,
3017 sec_toc = 2
3018};
3019
f0abc2a1
AM		 3020struct _ppc64_elf_section_data
3021{
3022 struct bfd_elf_section_data elf;
411e1bfb 3023
f0abc2a1
AM		 3024 union
3025 {
51aecdc5
AM		 3026 /* An array with one entry for each opd function descriptor,
3027 and some spares since opd entries may be either 16 or 24 bytes. */
3028#define OPD_NDX(OFF) ((OFF) >> 4)
74f0fb50
AM		 3029 struct _opd_sec_data
3030 {
3031 /* Points to the function code section for local opd entries. */
3032 asection **func_sec;
3033
3034 /* After editing .opd, adjust references to opd local syms. */
3035 long *adjust;
3036 } opd;
7c8fe5c4 3037
3a71aa26
AM		 3038 /* An array for toc sections, indexed by offset/8. */
3039 struct _toc_sec_data
3040 {
3041 /* Specifies the relocation symbol index used at a given toc offset. */
3042 unsigned *symndx;
3043
3044 /* And the relocation addend. */
3045 bfd_vma *add;
3046 } toc;
7c8fe5c4
AM		 3047 } u;
3048
3049 enum _ppc64_sec_type sec_type:2;
411e1bfb 3050
7c8fe5c4
AM		 3051 /* Flag set when small branches are detected. Used to
3052 select suitable defaults for the stub group size. */
3053 unsigned int has_14bit_branch:1;
f0abc2a1
AM		 3054};
3055
3056#define ppc64_elf_section_data(sec) \
411e1bfb 3057 ((struct _ppc64_elf_section_data *) elf_section_data (sec))
f0abc2a1
AM		 3058
3059static bfd_boolean
4ce794b7 3060ppc64_elf_new_section_hook (bfd *abfd, asection *sec)
f0abc2a1 3061{
f592407e
AM		 3062 if (!sec->used_by_bfd)
3063 {
3064 struct _ppc64_elf_section_data *sdata;
3065 bfd_size_type amt = sizeof (*sdata);
f0abc2a1 3066
f592407e
AM		 3067 sdata = bfd_zalloc (abfd, amt);
3068 if (sdata == NULL)
3069 return FALSE;
3070 sec->used_by_bfd = sdata;
3071 }
f0abc2a1
AM		 3072
3073 return _bfd_elf_new_section_hook (abfd, sec);
3074}
4025353c 3075
74f0fb50 3076static struct _opd_sec_data *
4025353c
AM		 3077get_opd_info (asection * sec)
3078{
3079 if (sec != NULL
3080 && ppc64_elf_section_data (sec) != NULL
7c8fe5c4 3081 && ppc64_elf_section_data (sec)->sec_type == sec_opd)
74f0fb50 3082 return &ppc64_elf_section_data (sec)->u.opd;
4025353c
AM		 3083 return NULL;
3084}
90e3cdf2
JJ		 3085\f
3086/* Parameters for the qsort hook. */
90e3cdf2 3087static bfd_boolean synthetic_relocatable;
cd285db5 3088static asection *synthetic_opd;
90e3cdf2 3089
699733f6 3090/* qsort comparison function for ppc64_elf_get_synthetic_symtab. */
90e3cdf2
JJ		 3091
3092static int
3093compare_symbols (const void *ap, const void *bp)
3094{
3095 const asymbol *a = * (const asymbol **) ap;
3096 const asymbol *b = * (const asymbol **) bp;
3097
699733f6
AM		 3098 /* Section symbols first. */
3099 if ((a->flags & BSF_SECTION_SYM) && !(b->flags & BSF_SECTION_SYM))
90e3cdf2 3100 return -1;
699733f6 3101 if (!(a->flags & BSF_SECTION_SYM) && (b->flags & BSF_SECTION_SYM))
90e3cdf2
JJ		 3102 return 1;
3103
699733f6 3104 /* then .opd symbols. */
cd285db5
AM		 3105 if (synthetic_opd != NULL)
3106 {
3107 if (strcmp (a->section->name, ".opd") == 0
3108 && strcmp (b->section->name, ".opd") != 0)
3109 return -1;
3110 if (strcmp (a->section->name, ".opd") != 0
3111 && strcmp (b->section->name, ".opd") == 0)
3112 return 1;
3113 }
90e3cdf2 3114
699733f6 3115 /* then other code symbols. */
90e3cdf2
JJ		 3116 if ((a->section->flags & (SEC_CODE | SEC_ALLOC | SEC_THREAD_LOCAL))
3117 == (SEC_CODE | SEC_ALLOC)
3118 && (b->section->flags & (SEC_CODE | SEC_ALLOC | SEC_THREAD_LOCAL))
3119 != (SEC_CODE | SEC_ALLOC))
3120 return -1;
3121
3122 if ((a->section->flags & (SEC_CODE | SEC_ALLOC | SEC_THREAD_LOCAL))
3123 != (SEC_CODE | SEC_ALLOC)
3124 && (b->section->flags & (SEC_CODE | SEC_ALLOC | SEC_THREAD_LOCAL))
3125 == (SEC_CODE | SEC_ALLOC))
3126 return 1;
3127
3128 if (synthetic_relocatable)
3129 {
3130 if (a->section->id < b->section->id)
3131 return -1;
3132
3133 if (a->section->id > b->section->id)
3134 return 1;
3135 }
3136
3137 if (a->value + a->section->vma < b->value + b->section->vma)
3138 return -1;
3139
3140 if (a->value + a->section->vma > b->value + b->section->vma)
3141 return 1;
3142
4d35a0aa
AM		 3143 /* For syms with the same value, prefer strong dynamic global function
3144 syms over other syms. */
3145 if ((a->flags & BSF_GLOBAL) != 0 && (b->flags & BSF_GLOBAL) == 0)
3146 return -1;
3147
3148 if ((a->flags & BSF_GLOBAL) == 0 && (b->flags & BSF_GLOBAL) != 0)
3149 return 1;
3150
3151 if ((a->flags & BSF_FUNCTION) != 0 && (b->flags & BSF_FUNCTION) == 0)
3152 return -1;
3153
3154 if ((a->flags & BSF_FUNCTION) == 0 && (b->flags & BSF_FUNCTION) != 0)
3155 return 1;
3156
3157 if ((a->flags & BSF_WEAK) == 0 && (b->flags & BSF_WEAK) != 0)
3158 return -1;
3159
3160 if ((a->flags & BSF_WEAK) != 0 && (b->flags & BSF_WEAK) == 0)
3161 return 1;
3162
3163 if ((a->flags & BSF_DYNAMIC) != 0 && (b->flags & BSF_DYNAMIC) == 0)
3164 return -1;
3165
3166 if ((a->flags & BSF_DYNAMIC) == 0 && (b->flags & BSF_DYNAMIC) != 0)
3167 return 1;
3168
90e3cdf2
JJ		 3169 return 0;
3170}
3171
699733f6 3172/* Search SYMS for a symbol of the given VALUE. */
90e3cdf2 3173
699733f6 3174static asymbol *
7292b3ac 3175sym_exists_at (asymbol **syms, long lo, long hi, unsigned int id, bfd_vma value)
90e3cdf2 3176{
699733f6 3177 long mid;
90e3cdf2 3178
7292b3ac 3179 if (id == (unsigned) -1)
699733f6
AM		 3180 {
3181 while (lo < hi)
3182 {
3183 mid = (lo + hi) >> 1;
3184 if (syms[mid]->value + syms[mid]->section->vma < value)
3185 lo = mid + 1;
3186 else if (syms[mid]->value + syms[mid]->section->vma > value)
3187 hi = mid;
3188 else
3189 return syms[mid];
3190 }
3191 }
3192 else
3193 {
3194 while (lo < hi)
3195 {
3196 mid = (lo + hi) >> 1;
3197 if (syms[mid]->section->id < id)
3198 lo = mid + 1;
3199 else if (syms[mid]->section->id > id)
3200 hi = mid;
3201 else if (syms[mid]->value < value)
3202 lo = mid + 1;
3203 else if (syms[mid]->value > value)
3204 hi = mid;
3205 else
3206 return syms[mid];
3207 }
3208 }
3209 return NULL;
90e3cdf2
JJ		 3210}
3211
468392fb
AM		 3212static bfd_boolean
3213section_covers_vma (bfd *abfd ATTRIBUTE_UNUSED, asection *section, void *ptr)
3214{
3215 bfd_vma vma = *(bfd_vma *) ptr;
3216 return ((section->flags & SEC_ALLOC) != 0
3217 && section->vma <= vma
3218 && vma < section->vma + section->size);
3219}
3220
699733f6 3221/* Create synthetic symbols, effectively restoring "dot-symbol" function
c4b0b099
AM		 3222 entry syms. Also generate @plt symbols for the glink branch table.
3223 Returns count of synthetic symbols in RET or -1 on error. */
90e3cdf2
JJ		 3224
3225static long
a7535cf3
AM		 3226ppc64_elf_get_synthetic_symtab (bfd *abfd,
3227 long static_count, asymbol **static_syms,
3228 long dyn_count, asymbol **dyn_syms,
c9727e01 3229 asymbol **ret)
90e3cdf2
JJ		 3230{
3231 asymbol *s;
699733f6
AM		 3232 long i;
3233 long count;
90e3cdf2 3234 char *names;
a7535cf3 3235 long symcount, codesecsym, codesecsymend, secsymend, opdsymend;
ee67d69a 3236 asection *opd = NULL;
90e3cdf2 3237 bfd_boolean relocatable = (abfd->flags & (EXEC_P | DYNAMIC)) == 0;
a7535cf3 3238 asymbol **syms;
ee67d69a 3239 int abi = abiversion (abfd);
90e3cdf2
JJ		 3240
3241 *ret = NULL;
3242
ee67d69a
AM		 3243 if (abi < 2)
3244 {
3245 opd = bfd_get_section_by_name (abfd, ".opd");
3246 if (opd == NULL && abi == 1)
3247 return 0;
3248 }
90e3cdf2 3249
a7535cf3 3250 symcount = static_count;
c9727e01 3251 if (!relocatable)
a7535cf3 3252 symcount += dyn_count;
90e3cdf2 3253 if (symcount == 0)
c9727e01 3254 return 0;
90e3cdf2 3255
a7535cf3
AM		 3256 syms = bfd_malloc ((symcount + 1) * sizeof (*syms));
3257 if (syms == NULL)
7356fed5 3258 return -1;
a7535cf3
AM		 3259
3260 if (!relocatable && static_count != 0 && dyn_count != 0)
3261 {
3262 /* Use both symbol tables. */
3263 memcpy (syms, static_syms, static_count * sizeof (*syms));
3264 memcpy (syms + static_count, dyn_syms, (dyn_count + 1) * sizeof (*syms));
3265 }
3266 else if (!relocatable && static_count == 0)
3267 memcpy (syms, dyn_syms, (symcount + 1) * sizeof (*syms));
3268 else
3269 memcpy (syms, static_syms, (symcount + 1) * sizeof (*syms));
3270
90e3cdf2 3271 synthetic_relocatable = relocatable;
cd285db5 3272 synthetic_opd = opd;
595da8c5 3273 qsort (syms, symcount, sizeof (*syms), compare_symbols);
90e3cdf2 3274
c9727e01
AM		 3275 if (!relocatable && symcount > 1)
3276 {
3277 long j;
3278 /* Trim duplicate syms, since we may have merged the normal and
3279 dynamic symbols. Actually, we only care about syms that have
3b36f7e6 3280 different values, so trim any with the same value. */
c9727e01
AM		 3281 for (i = 1, j = 1; i < symcount; ++i)
3282 if (syms[i - 1]->value + syms[i - 1]->section->vma
3283 != syms[i]->value + syms[i]->section->vma)
3284 syms[j++] = syms[i];
3285 symcount = j;
3286 }
3287
699733f6 3288 i = 0;
cd285db5
AM		 3289 /* Note that here and in compare_symbols we can't compare opd and
3290 sym->section directly. With separate debug info files, the
3291 symbols will be extracted from the debug file while abfd passed
3292 to this function is the real binary. */
3293 if (opd != NULL && strcmp (syms[i]->section->name, ".opd") == 0)
699733f6
AM		 3294 ++i;
3295 codesecsym = i;
90e3cdf2 3296
699733f6
AM		 3297 for (; i < symcount; ++i)
3298 if (((syms[i]->section->flags & (SEC_CODE | SEC_ALLOC | SEC_THREAD_LOCAL))
3299 != (SEC_CODE | SEC_ALLOC))
3300 || (syms[i]->flags & BSF_SECTION_SYM) == 0)
3301 break;
3302 codesecsymend = i;
90e3cdf2 3303
699733f6
AM		 3304 for (; i < symcount; ++i)
3305 if ((syms[i]->flags & BSF_SECTION_SYM) == 0)
3306 break;
3307 secsymend = i;
90e3cdf2 3308
cd285db5
AM		 3309 if (opd != NULL)
3310 for (; i < symcount; ++i)
3311 if (strcmp (syms[i]->section->name, ".opd") != 0)
3312 break;
699733f6 3313 opdsymend = i;
90e3cdf2 3314
699733f6
AM		 3315 for (; i < symcount; ++i)
3316 if ((syms[i]->section->flags & (SEC_CODE | SEC_ALLOC | SEC_THREAD_LOCAL))
3317 != (SEC_CODE | SEC_ALLOC))
3318 break;
3319 symcount = i;
3320
c9727e01 3321 count = 0;
90e3cdf2 3322
699733f6 3323 if (relocatable)
90e3cdf2 3324 {
699733f6
AM		 3325 bfd_boolean (*slurp_relocs) (bfd *, asection *, asymbol **, bfd_boolean);
3326 arelent *r;
3327 size_t size;
3328 long relcount;
90e3cdf2 3329
468392fb
AM		 3330 if (opdsymend == secsymend)
3331 goto done;
3332
699733f6 3333 slurp_relocs = get_elf_backend_data (abfd)->s->slurp_reloc_table;
90e3cdf2 3334 relcount = (opd->flags & SEC_RELOC) ? opd->reloc_count : 0;
7356fed5 3335 if (relcount == 0)
c9727e01 3336 goto done;
90e3cdf2 3337
7356fed5
AM		 3338 if (!(*slurp_relocs) (abfd, opd, static_syms, FALSE))
3339 {
3340 count = -1;
3341 goto done;
3342 }
3343
699733f6 3344 size = 0;
595da8c5 3345 for (i = secsymend, r = opd->relocation; i < opdsymend; ++i)
699733f6
AM		 3346 {
3347 asymbol *sym;
90e3cdf2 3348
595da8c5 3349 while (r < opd->relocation + relcount
699733f6
AM		 3350 && r->address < syms[i]->value + opd->vma)
3351 ++r;
90e3cdf2 3352
595da8c5 3353 if (r == opd->relocation + relcount)
699733f6 3354 break;
90e3cdf2 3355
699733f6
AM		 3356 if (r->address != syms[i]->value + opd->vma)
3357 continue;
90e3cdf2 3358
699733f6
AM		 3359 if (r->howto->type != R_PPC64_ADDR64)
3360 continue;
90e3cdf2 3361
699733f6
AM		 3362 sym = *r->sym_ptr_ptr;
3363 if (!sym_exists_at (syms, opdsymend, symcount,
3364 sym->section->id, sym->value + r->addend))
3365 {
3366 ++count;
3367 size += sizeof (asymbol);
3368 size += strlen (syms[i]->name) + 2;
3369 }
3370 }
90e3cdf2 3371
c4b0b099
AM		 3372 if (size == 0)
3373 goto done;
699733f6
AM		 3374 s = *ret = bfd_malloc (size);
3375 if (s == NULL)
3376 {
7356fed5 3377 count = -1;
c9727e01 3378 goto done;
699733f6 3379 }
90e3cdf2 3380
699733f6 3381 names = (char *) (s + count);
90e3cdf2 3382
595da8c5 3383 for (i = secsymend, r = opd->relocation; i < opdsymend; ++i)
90e3cdf2 3384 {
699733f6 3385 asymbol *sym;
90e3cdf2 3386
595da8c5 3387 while (r < opd->relocation + relcount
699733f6
AM		 3388 && r->address < syms[i]->value + opd->vma)
3389 ++r;
90e3cdf2 3390
595da8c5 3391 if (r == opd->relocation + relcount)
699733f6
AM		 3392 break;
3393
3394 if (r->address != syms[i]->value + opd->vma)
3395 continue;
3396
3397 if (r->howto->type != R_PPC64_ADDR64)
3398 continue;
90e3cdf2 3399
699733f6
AM		 3400 sym = *r->sym_ptr_ptr;
3401 if (!sym_exists_at (syms, opdsymend, symcount,
3402 sym->section->id, sym->value + r->addend))
3403 {
3404 size_t len;
3405
3406 *s = *syms[i];
6ba2a415 3407 s->flags |= BSF_SYNTHETIC;
699733f6
AM		 3408 s->section = sym->section;
3409 s->value = sym->value + r->addend;
3410 s->name = names;
3411 *names++ = '.';
3412 len = strlen (syms[i]->name);
3413 memcpy (names, syms[i]->name, len + 1);
3414 names += len + 1;
6f610d07
UW		 3415 /* Have udata.p point back to the original symbol this
3416 synthetic symbol was derived from. */
3417 s->udata.p = syms[i];
699733f6
AM		 3418 s++;
3419 }
3420 }
3421 }
3422 else
90e3cdf2 3423 {
468392fb 3424 bfd_boolean (*slurp_relocs) (bfd *, asection *, asymbol **, bfd_boolean);
ee67d69a 3425 bfd_byte *contents = NULL;
699733f6 3426 size_t size;
468392fb
AM		 3427 long plt_count = 0;
3428 bfd_vma glink_vma = 0, resolv_vma = 0;
3429 asection *dynamic, *glink = NULL, *relplt = NULL;
3430 arelent *p;
90e3cdf2 3431
ee67d69a 3432 if (opd != NULL && !bfd_malloc_and_get_section (abfd, opd, &contents))
699733f6 3433 {
c4b0b099
AM		 3434 free_contents_and_exit_err:
3435 count = -1;
ee67d69a 3436 free_contents_and_exit:
699733f6 3437 if (contents)
ee67d69a 3438 free (contents);
c9727e01 3439 goto done;
699733f6 3440 }
90e3cdf2 3441
699733f6
AM		 3442 size = 0;
3443 for (i = secsymend; i < opdsymend; ++i)
3444 {
3445 bfd_vma ent;
90e3cdf2 3446
5ef11c02
AM		 3447 /* Ignore bogus symbols. */
3448 if (syms[i]->value > opd->size - 8)
3449 continue;
3450
699733f6
AM		 3451 ent = bfd_get_64 (abfd, contents + syms[i]->value);
3452 if (!sym_exists_at (syms, opdsymend, symcount, -1, ent))
3453 {
3454 ++count;
3455 size += sizeof (asymbol);
3456 size += strlen (syms[i]->name) + 2;
3457 }
3458 }
90e3cdf2 3459
468392fb 3460 /* Get start of .glink stubs from DT_PPC64_GLINK. */
066ee829
AM		 3461 if (dyn_count != 0
3462 && (dynamic = bfd_get_section_by_name (abfd, ".dynamic")) != NULL)
468392fb
AM		 3463 {
3464 bfd_byte *dynbuf, *extdyn, *extdynend;
3465 size_t extdynsize;
3466 void (*swap_dyn_in) (bfd *, const void *, Elf_Internal_Dyn *);
3467
3468 if (!bfd_malloc_and_get_section (abfd, dynamic, &dynbuf))
c4b0b099 3469 goto free_contents_and_exit_err;
468392fb
AM		 3470
3471 extdynsize = get_elf_backend_data (abfd)->s->sizeof_dyn;
3472 swap_dyn_in = get_elf_backend_data (abfd)->s->swap_dyn_in;
3473
3474 extdyn = dynbuf;
3475 extdynend = extdyn + dynamic->size;
3476 for (; extdyn < extdynend; extdyn += extdynsize)
3477 {
3478 Elf_Internal_Dyn dyn;
3479 (*swap_dyn_in) (abfd, extdyn, &dyn);
3480
3481 if (dyn.d_tag == DT_NULL)
3482 break;
3483
3484 if (dyn.d_tag == DT_PPC64_GLINK)
3485 {
b9e5796b
AM		 3486 /* The first glink stub starts at offset 32; see
3487 comment in ppc64_elf_finish_dynamic_sections. */
3488 glink_vma = dyn.d_un.d_val + GLINK_CALL_STUB_SIZE - 8 * 4;
468392fb
AM		 3489 /* The .glink section usually does not survive the final
3490 link; search for the section (usually .text) where the
3491 glink stubs now reside. */
3492 glink = bfd_sections_find_if (abfd, section_covers_vma,
3493 &glink_vma);
3494 break;
3495 }
3496 }
3497
3498 free (dynbuf);
3499 }
3500
3501 if (glink != NULL)
3502 {
3503 /* Determine __glink trampoline by reading the relative branch
3504 from the first glink stub. */
3505 bfd_byte buf[4];
b9e5796b
AM		 3506 unsigned int off = 0;
3507
3508 while (bfd_get_section_contents (abfd, glink, buf,
3509 glink_vma + off - glink->vma, 4))
468392fb
AM		 3510 {
3511 unsigned int insn = bfd_get_32 (abfd, buf);
3512 insn ^= B_DOT;
3513 if ((insn & ~0x3fffffc) == 0)
b9e5796b
AM		 3514 {
3515 resolv_vma = glink_vma + off + (insn ^ 0x2000000) - 0x2000000;
3516 break;
3517 }
3518 off += 4;
3519 if (off > 4)
3520 break;
468392fb
AM		 3521 }
3522
3523 if (resolv_vma)
3524 size += sizeof (asymbol) + sizeof ("__glink_PLTresolve");
468392fb 3525
066ee829
AM		 3526 relplt = bfd_get_section_by_name (abfd, ".rela.plt");
3527 if (relplt != NULL)
3528 {
3529 slurp_relocs = get_elf_backend_data (abfd)->s->slurp_reloc_table;
3530 if (! (*slurp_relocs) (abfd, relplt, dyn_syms, TRUE))
c4b0b099 3531 goto free_contents_and_exit_err;
68ffbac6 3532
066ee829
AM		 3533 plt_count = relplt->size / sizeof (Elf64_External_Rela);
3534 size += plt_count * sizeof (asymbol);
468392fb 3535
066ee829
AM		 3536 p = relplt->relocation;
3537 for (i = 0; i < plt_count; i++, p++)
e054468f
AM		 3538 {
3539 size += strlen ((*p->sym_ptr_ptr)->name) + sizeof ("@plt");
3540 if (p->addend != 0)
3541 size += sizeof ("+0x") - 1 + 16;
3542 }
066ee829 3543 }
468392fb
AM		 3544 }
3545
c4b0b099
AM		 3546 if (size == 0)
3547 goto free_contents_and_exit;
699733f6
AM		 3548 s = *ret = bfd_malloc (size);
3549 if (s == NULL)
c4b0b099 3550 goto free_contents_and_exit_err;
90e3cdf2 3551
468392fb 3552 names = (char *) (s + count + plt_count + (resolv_vma != 0));
90e3cdf2 3553
699733f6 3554 for (i = secsymend; i < opdsymend; ++i)
90e3cdf2 3555 {
699733f6 3556 bfd_vma ent;
90e3cdf2 3557
5ef11c02
AM		 3558 if (syms[i]->value > opd->size - 8)
3559 continue;
3560
699733f6
AM		 3561 ent = bfd_get_64 (abfd, contents + syms[i]->value);
3562 if (!sym_exists_at (syms, opdsymend, symcount, -1, ent))
90e3cdf2 3563 {
c9727e01 3564 long lo, hi;
699733f6 3565 size_t len;
c9727e01 3566 asection *sec = abfd->sections;
90e3cdf2 3567
699733f6
AM		 3568 *s = *syms[i];
3569 lo = codesecsym;
3570 hi = codesecsymend;
3571 while (lo < hi)
3572 {
c9727e01 3573 long mid = (lo + hi) >> 1;
699733f6
AM		 3574 if (syms[mid]->section->vma < ent)
3575 lo = mid + 1;
3576 else if (syms[mid]->section->vma > ent)
3577 hi = mid;
3578 else
c9727e01
AM		 3579 {
3580 sec = syms[mid]->section;
3581 break;
3582 }
699733f6
AM		 3583 }
3584
c9727e01 3585 if (lo >= hi && lo > codesecsym)
699733f6 3586 sec = syms[lo - 1]->section;
699733f6
AM		 3587
3588 for (; sec != NULL; sec = sec->next)
3589 {
3590 if (sec->vma > ent)
3591 break;
63524580
JK		 3592 /* SEC_LOAD may not be set if SEC is from a separate debug
3593 info file. */
3594 if ((sec->flags & SEC_ALLOC) == 0)
699733f6
AM		 3595 break;
3596 if ((sec->flags & SEC_CODE) != 0)
3597 s->section = sec;
3598 }
6ba2a415 3599 s->flags |= BSF_SYNTHETIC;
699733f6
AM		 3600 s->value = ent - s->section->vma;
3601 s->name = names;
3602 *names++ = '.';
3603 len = strlen (syms[i]->name);
3604 memcpy (names, syms[i]->name, len + 1);
3605 names += len + 1;
6f610d07
UW		 3606 /* Have udata.p point back to the original symbol this
3607 synthetic symbol was derived from. */
3608 s->udata.p = syms[i];
699733f6 3609 s++;
90e3cdf2 3610 }
90e3cdf2 3611 }
699733f6 3612 free (contents);
468392fb
AM		 3613
3614 if (glink != NULL && relplt != NULL)
3615 {
3616 if (resolv_vma)
3617 {
3618 /* Add a symbol for the main glink trampoline. */
86a4952b 3619 memset (s, 0, sizeof *s);
468392fb 3620 s->the_bfd = abfd;
6ba2a415 3621 s->flags = BSF_GLOBAL | BSF_SYNTHETIC;
468392fb
AM		 3622 s->section = glink;
3623 s->value = resolv_vma - glink->vma;
3624 s->name = names;
3625 memcpy (names, "__glink_PLTresolve", sizeof ("__glink_PLTresolve"));
3626 names += sizeof ("__glink_PLTresolve");
3627 s++;
3628 count++;
3629 }
3630
3631 /* FIXME: It would be very much nicer to put sym@plt on the
3632 stub rather than on the glink branch table entry. The
3633 objdump disassembler would then use a sensible symbol
3634 name on plt calls. The difficulty in doing so is
3635 a) finding the stubs, and,
3636 b) matching stubs against plt entries, and,
3637 c) there can be multiple stubs for a given plt entry.
3638
3639 Solving (a) could be done by code scanning, but older
3640 ppc64 binaries used different stubs to current code.
3641 (b) is the tricky one since you need to known the toc
3642 pointer for at least one function that uses a pic stub to
3643 be able to calculate the plt address referenced.
3644 (c) means gdb would need to set multiple breakpoints (or
3645 find the glink branch itself) when setting breakpoints
3646 for pending shared library loads. */
3647 p = relplt->relocation;
3648 for (i = 0; i < plt_count; i++, p++)
3649 {
3650 size_t len;
3651
3652 *s = **p->sym_ptr_ptr;
3653 /* Undefined syms won't have BSF_LOCAL or BSF_GLOBAL set. Since
3654 we are defining a symbol, ensure one of them is set. */
3655 if ((s->flags & BSF_LOCAL) == 0)
3656 s->flags |= BSF_GLOBAL;
6ba2a415 3657 s->flags |= BSF_SYNTHETIC;
468392fb
AM		 3658 s->section = glink;
3659 s->value = glink_vma - glink->vma;
3660 s->name = names;
3661 s->udata.p = NULL;
3662 len = strlen ((*p->sym_ptr_ptr)->name);
3663 memcpy (names, (*p->sym_ptr_ptr)->name, len);
3664 names += len;
e054468f
AM		 3665 if (p->addend != 0)
3666 {
3667 memcpy (names, "+0x", sizeof ("+0x") - 1);
3668 names += sizeof ("+0x") - 1;
3669 bfd_sprintf_vma (abfd, names, p->addend);
3670 names += strlen (names);
3671 }
468392fb
AM		 3672 memcpy (names, "@plt", sizeof ("@plt"));
3673 names += sizeof ("@plt");
3674 s++;
b9e5796b
AM		 3675 if (abi < 2)
3676 {
3677 glink_vma += 8;
3678 if (i >= 0x8000)
3679 glink_vma += 4;
3680 }
3681 else
468392fb
AM		 3682 glink_vma += 4;
3683 }
3684 count += plt_count;
3685 }
90e3cdf2
JJ		 3686 }
3687
c9727e01 3688 done:
a7535cf3 3689 free (syms);
90e3cdf2
JJ		 3690 return count;
3691}
5bd4f169 3692\f
65f38f15
AM		 3693/* The following functions are specific to the ELF linker, while
3694 functions above are used generally. Those named ppc64_elf_* are
3695 called by the main ELF linker code. They appear in this file more
3696 or less in the order in which they are called. eg.
3697 ppc64_elf_check_relocs is called early in the link process,
3698 ppc64_elf_finish_dynamic_sections is one of the last functions
e86ce104
AM		 3699 called.
3700
3701 PowerPC64-ELF uses a similar scheme to PowerPC64-XCOFF in that
3702 functions have both a function code symbol and a function descriptor
3703 symbol. A call to foo in a relocatable object file looks like:
3704
3705 . .text
3706 . x:
3707 . bl .foo
3708 . nop
3709
3710 The function definition in another object file might be:
3711
3712 . .section .opd
3713 . foo: .quad .foo
3714 . .quad .TOC.@tocbase
3715 . .quad 0
3716 .
3717 . .text
3718 . .foo: blr
3719
3720 When the linker resolves the call during a static link, the branch
3721 unsurprisingly just goes to .foo and the .opd information is unused.
3722 If the function definition is in a shared library, things are a little
3723 different: The call goes via a plt call stub, the opd information gets
3724 copied to the plt, and the linker patches the nop.
3725
3726 . x:
3727 . bl .foo_stub
3728 . ld 2,40(1)
3729 .
3730 .
3731 . .foo_stub:
71a39c98
AM		 3732 . std 2,40(1) # in practice, the call stub
3733 . addis 11,2,Lfoo@toc@ha # is slightly optimized, but
3734 . addi 11,11,Lfoo@toc@l # this is the general idea
3735 . ld 12,0(11)
3736 . ld 2,8(11)
3737 . mtctr 12
3738 . ld 11,16(11)
e86ce104
AM		 3739 . bctr
3740 .
3741 . .section .plt
3742 . Lfoo: reloc (R_PPC64_JMP_SLOT, foo)
3743
3744 The "reloc ()" notation is supposed to indicate that the linker emits
3745 an R_PPC64_JMP_SLOT reloc against foo. The dynamic linker does the opd
3746 copying.
3747
3748 What are the difficulties here? Well, firstly, the relocations
3749 examined by the linker in check_relocs are against the function code
3750 sym .foo, while the dynamic relocation in the plt is emitted against
3751 the function descriptor symbol, foo. Somewhere along the line, we need
3752 to carefully copy dynamic link information from one symbol to the other.
3753 Secondly, the generic part of the elf linker will make .foo a dynamic
3754 symbol as is normal for most other backends. We need foo dynamic
3755 instead, at least for an application final link. However, when
3756 creating a shared library containing foo, we need to have both symbols
3757 dynamic so that references to .foo are satisfied during the early
3758 stages of linking. Otherwise the linker might decide to pull in a
8387904d
AM		 3759 definition from some other object, eg. a static library.
3760
3761 Update: As of August 2004, we support a new convention. Function
3762 calls may use the function descriptor symbol, ie. "bl foo". This
3763 behaves exactly as "bl .foo". */
65f38f15 3764
1d483afe 3765/* Of those relocs that might be copied as dynamic relocs, this function
58ac9f71
AM		 3766 selects those that must be copied when linking a shared library,
3767 even when the symbol is local. */
65f38f15 3768
1d483afe
AM		 3769static int
3770must_be_dyn_reloc (struct bfd_link_info *info,
3771 enum elf_ppc64_reloc_type r_type)
3772{
3773 switch (r_type)
3774 {
3775 default:
3776 return 1;
3777
3778 case R_PPC64_REL32:
3779 case R_PPC64_REL64:
3780 case R_PPC64_REL30:
3781 return 0;
3782
3783 case R_PPC64_TPREL16:
3784 case R_PPC64_TPREL16_LO:
3785 case R_PPC64_TPREL16_HI:
3786 case R_PPC64_TPREL16_HA:
3787 case R_PPC64_TPREL16_DS:
3788 case R_PPC64_TPREL16_LO_DS:
f9c6b907
AM		 3789 case R_PPC64_TPREL16_HIGH:
3790 case R_PPC64_TPREL16_HIGHA:
1d483afe
AM		 3791 case R_PPC64_TPREL16_HIGHER:
3792 case R_PPC64_TPREL16_HIGHERA:
3793 case R_PPC64_TPREL16_HIGHEST:
3794 case R_PPC64_TPREL16_HIGHESTA:
3795 case R_PPC64_TPREL64:
0e1862bb 3796 return !bfd_link_executable (info);
1d483afe
AM		 3797 }
3798}
65f38f15 3799
f4656909
AM		 3800/* If ELIMINATE_COPY_RELOCS is non-zero, the linker will try to avoid
3801 copying dynamic variables from a shared lib into an app's dynbss
3802 section, and instead use a dynamic relocation to point into the
5d35169e
AM		 3803 shared lib. With code that gcc generates, it's vital that this be
3804 enabled; In the PowerPC64 ABI, the address of a function is actually
3805 the address of a function descriptor, which resides in the .opd
3806 section. gcc uses the descriptor directly rather than going via the
3807 GOT as some other ABI's do, which means that initialized function
3808 pointers must reference the descriptor. Thus, a function pointer
3809 initialized to the address of a function in a shared library will
3810 either require a copy reloc, or a dynamic reloc. Using a copy reloc
4cc11e76 3811 redefines the function descriptor symbol to point to the copy. This
5d35169e
AM		 3812 presents a problem as a plt entry for that function is also
3813 initialized from the function descriptor symbol and the copy reloc
3814 may not be initialized first. */
a23b6845 3815#define ELIMINATE_COPY_RELOCS 1
f4656909 3816
721956f4 3817/* Section name for stubs is the associated section name plus this
29942be8
NC		 3818 string. */
3819#define STUB_SUFFIX ".stub"
721956f4
AM		 3820
3821/* Linker stubs.
3822 ppc_stub_long_branch:
3823 Used when a 14 bit branch (or even a 24 bit branch) can't reach its
3824 destination, but a 24 bit branch in a stub section will reach.
3825 . b dest
3826
3827 ppc_stub_plt_branch:
3828 Similar to the above, but a 24 bit branch in the stub section won't
3829 reach its destination.
71a39c98
AM		 3830 . addis %r11,%r2,xxx@toc@ha
3831 . ld %r12,xxx@toc@l(%r11)
3832 . mtctr %r12
721956f4
AM		 3833 . bctr
3834
3835 ppc_stub_plt_call:
2c66dc6c
AM		 3836 Used to call a function in a shared library. If it so happens that
3837 the plt entry referenced crosses a 64k boundary, then an extra
71a39c98 3838 "addi %r11,%r11,xxx@toc@l" will be inserted before the "mtctr".
721956f4 3839 . std %r2,40(%r1)
71a39c98
AM		 3840 . addis %r11,%r2,xxx@toc@ha
3841 . ld %r12,xxx+0@toc@l(%r11)
3842 . mtctr %r12
3843 . ld %r2,xxx+8@toc@l(%r11)
3844 . ld %r11,xxx+16@toc@l(%r11)
721956f4 3845 . bctr
ad8e1ba5
AM		 3846
3847 ppc_stub_long_branch and ppc_stub_plt_branch may also have additional
3848 code to adjust the value and save r2 to support multiple toc sections.
3849 A ppc_stub_long_branch with an r2 offset looks like:
3850 . std %r2,40(%r1)
3851 . addis %r2,%r2,off@ha
3852 . addi %r2,%r2,off@l
3853 . b dest
3854
3855 A ppc_stub_plt_branch with an r2 offset looks like:
3856 . std %r2,40(%r1)
71a39c98
AM		 3857 . addis %r11,%r2,xxx@toc@ha
3858 . ld %r12,xxx@toc@l(%r11)
ad8e1ba5
AM		 3859 . addis %r2,%r2,off@ha
3860 . addi %r2,%r2,off@l
71a39c98 3861 . mtctr %r12
ad8e1ba5 3862 . bctr
ac2df442
AM		 3863
3864 In cases where the "addis" instruction would add zero, the "addis" is
3865 omitted and following instructions modified slightly in some cases.
721956f4
AM		 3866*/
3867
3868enum ppc_stub_type {
3869 ppc_stub_none,
3870 ppc_stub_long_branch,
ad8e1ba5 3871 ppc_stub_long_branch_r2off,
721956f4 3872 ppc_stub_plt_branch,
ad8e1ba5 3873 ppc_stub_plt_branch_r2off,
794e51c0 3874 ppc_stub_plt_call,
7341d5e2 3875 ppc_stub_plt_call_r2save,
a4b6fadd
AM		 3876 ppc_stub_global_entry,
3877 ppc_stub_save_res
721956f4
AM		 3878};
3879
6f20ed8a
AM		 3880/* Information on stub grouping. */
3881struct map_stub
3882{
3883 /* The stub section. */
3884 asection *stub_sec;
3885 /* This is the section to which stubs in the group will be attached. */
3886 asection *link_sec;
a4b6fadd
AM		 3887 /* Next group. */
3888 struct map_stub *next;
3889 /* Whether to emit a copy of register save/restore functions in this
3890 group. */
3891 int needs_save_res;
6f20ed8a
AM		 3892};
3893
721956f4
AM		 3894struct ppc_stub_hash_entry {
3895
3896 /* Base hash table entry structure. */
3897 struct bfd_hash_entry root;
3898
ad8e1ba5
AM		 3899 enum ppc_stub_type stub_type;
3900
6f20ed8a
AM		 3901 /* Group information. */
3902 struct map_stub *group;
721956f4
AM		 3903
3904 /* Offset within stub_sec of the beginning of this stub. */
3905 bfd_vma stub_offset;
3906
3907 /* Given the symbol's value and its section we can determine its final
3908 value when building the stubs (so the stub knows where to jump. */
3909 bfd_vma target_value;
3910 asection *target_section;
3911
721956f4
AM		 3912 /* The symbol table entry, if any, that this was derived from. */
3913 struct ppc_link_hash_entry *h;
e054468f 3914 struct plt_entry *plt_ent;
721956f4 3915
6911b7dc
AM		 3916 /* Symbol st_other. */
3917 unsigned char other;
721956f4
AM		 3918};
3919
3920struct ppc_branch_hash_entry {
3921
3922 /* Base hash table entry structure. */
3923 struct bfd_hash_entry root;
3924
c456f082 3925 /* Offset within branch lookup table. */
721956f4
AM		 3926 unsigned int offset;
3927
3928 /* Generation marker. */
3929 unsigned int iter;
3930};
65f38f15 3931
19e08130
AM		 3932/* Used to track dynamic relocations for local symbols. */
3933struct ppc_dyn_relocs
3934{
3935 struct ppc_dyn_relocs *next;
3936
3937 /* The input section of the reloc. */
3938 asection *sec;
3939
3940 /* Total number of relocs copied for the input section. */
3941 unsigned int count : 31;
3942
3943 /* Whether this entry is for STT_GNU_IFUNC symbols. */
3944 unsigned int ifunc : 1;
3945};
3946
65f38f15
AM		 3947struct ppc_link_hash_entry
3948{
3949 struct elf_link_hash_entry elf;
3950
b3fac117
AM		 3951 union {
3952 /* A pointer to the most recently used stub hash entry against this
3953 symbol. */
3954 struct ppc_stub_hash_entry *stub_cache;
3955
3956 /* A pointer to the next symbol starting with a '.' */
3957 struct ppc_link_hash_entry *next_dot_sym;
3958 } u;
721956f4 3959
65f38f15 3960 /* Track dynamic relocs copied for this symbol. */
6061a67d 3961 struct elf_dyn_relocs *dyn_relocs;
e86ce104 3962
d311bc8b
AM		 3963 /* Chain of aliases referring to a weakdef. */
3964 struct ppc_link_hash_entry *weakref;
3965
721956f4 3966 /* Link between function code and descriptor symbols. */
34814b9f 3967 struct ppc_link_hash_entry *oh;
721956f4 3968
e86ce104
AM		 3969 /* Flag function code and descriptor symbols. */
3970 unsigned int is_func:1;
3971 unsigned int is_func_descriptor:1;
908b32fc 3972 unsigned int fake:1;
411e1bfb 3973
c5614fa4
AM		 3974 /* Whether global opd/toc sym has been adjusted or not.
3975 After ppc64_elf_edit_opd/ppc64_elf_edit_toc has run, this flag
3976 should be set for all globals defined in any opd/toc section. */
754021d0
AM		 3977 unsigned int adjust_done:1;
3978
99877b66
AM		 3979 /* Set if we twiddled this symbol to weak at some stage. */
3980 unsigned int was_undefined:1;
3981
a4b6fadd
AM		 3982 /* Set if this is an out-of-line register save/restore function,
3983 with non-standard calling convention. */
3984 unsigned int save_res:1;
3985
411e1bfb 3986 /* Contexts in which symbol is used in the GOT (or TOC).
e7b938ca
AM		 3987 TLS_GD .. TLS_EXPLICIT bits are or'd into the mask as the
3988 corresponding relocs are encountered during check_relocs.
3989 tls_optimize clears TLS_GD .. TLS_TPREL when optimizing to
3990 indicate the corresponding GOT entry type is not needed.
3991 tls_optimize may also set TLS_TPRELGD when a GD reloc turns into
3992 a TPREL one. We use a separate flag rather than setting TPREL
3993 just for convenience in distinguishing the two cases. */
3994#define TLS_GD 1 /* GD reloc. */
3995#define TLS_LD 2 /* LD reloc. */
3996#define TLS_TPREL 4 /* TPREL reloc, => IE. */
3997#define TLS_DTPREL 8 /* DTPREL reloc, => LD. */
3998#define TLS_TLS 16 /* Any TLS reloc. */
3999#define TLS_EXPLICIT 32 /* Marks TOC section TLS relocs. */
4000#define TLS_TPRELGD 64 /* TPREL reloc resulting from GD->IE. */
e054468f 4001#define PLT_IFUNC 128 /* STT_GNU_IFUNC. */
f961d9dd 4002 unsigned char tls_mask;
65f38f15
AM		 4003};
4004
4005/* ppc64 ELF linker hash table. */
4006
4007struct ppc_link_hash_table
4008{
4009 struct elf_link_hash_table elf;
4010
721956f4
AM		 4011 /* The stub hash table. */
4012 struct bfd_hash_table stub_hash_table;
4013
4014 /* Another hash table for plt_branch stubs. */
4015 struct bfd_hash_table branch_hash_table;
4016
3b421ab3
AM		 4017 /* Hash table for function prologue tocsave. */
4018 htab_t tocsave_htab;
4019
e7d1c40c
AM		 4020 /* Various options and other info passed from the linker. */
4021 struct ppc64_elf_params *params;
721956f4 4022
6f20ed8a
AM		 4023 /* The size of sec_info below. */
4024 unsigned int sec_info_arr_size;
4025
4026 /* Per-section array of extra section info. Done this way rather
4027 than as part of ppc64_elf_section_data so we have the info for
4028 non-ppc64 sections. */
4029 struct
4030 {
4031 /* Along with elf_gp, specifies the TOC pointer used by this section. */
ad8e1ba5 4032 bfd_vma toc_off;
6f20ed8a
AM		 4033
4034 union
4035 {
4036 /* The section group that this section belongs to. */
4037 struct map_stub *group;
4038 /* A temp section list pointer. */
4039 asection *list;
4040 } u;
4041 } *sec_info;
721956f4 4042
a4b6fadd
AM		 4043 /* Linked list of groups. */
4044 struct map_stub *group;
4045
ad8e1ba5
AM		 4046 /* Temp used when calculating TOC pointers. */
4047 bfd_vma toc_curr;
bf102f86
AM		 4048 bfd *toc_bfd;
4049 asection *toc_first_sec;
ad8e1ba5 4050
b3fac117
AM		 4051 /* Used when adding symbols. */
4052 struct ppc_link_hash_entry *dot_syms;
4053
33e44f2e 4054 /* Shortcuts to get to dynamic linker sections. */
4ce794b7
AM		 4055 asection *dynbss;
4056 asection *relbss;
4057 asection *glink;
82bd7b59 4058 asection *sfpr;
4ce794b7
AM		 4059 asection *brlt;
4060 asection *relbrlt;
58d180e8 4061 asection *glink_eh_frame;
ec338859 4062
8387904d
AM		 4063 /* Shortcut to .__tls_get_addr and __tls_get_addr. */
4064 struct ppc_link_hash_entry *tls_get_addr;
4065 struct ppc_link_hash_entry *tls_get_addr_fd;
411e1bfb 4066
927be08e
AM		 4067 /* The size of reliplt used by got entry relocs. */
4068 bfd_size_type got_reli_size;
4069
9b5ecbd0 4070 /* Statistics. */
7341d5e2 4071 unsigned long stub_count[ppc_stub_global_entry];
9b5ecbd0 4072
ee75fd95
AM		 4073 /* Number of stubs against global syms. */
4074 unsigned long stub_globals;
4075
ee67d69a
AM		 4076 /* Set if we're linking code with function descriptors. */
4077 unsigned int opd_abi:1;
4078
4c52953f 4079 /* Support for multiple toc sections. */
33c0ec9d 4080 unsigned int do_multi_toc:1;
4c52953f 4081 unsigned int multi_toc_needed:1;
927be08e 4082 unsigned int second_toc_pass:1;
67f0cbdb 4083 unsigned int do_toc_opt:1;
4c52953f 4084
5d1634d7 4085 /* Set on error. */
99877b66 4086 unsigned int stub_error:1;
721956f4 4087
f6c7c3e8 4088 /* Temp used by ppc64_elf_before_check_relocs. */
99877b66 4089 unsigned int twiddled_syms:1;
721956f4
AM		 4090
4091 /* Incremented every time we size stubs. */
4092 unsigned int stub_iteration;
5d1634d7 4093
87d72d41
AM		 4094 /* Small local sym cache. */
4095 struct sym_cache sym_cache;
65f38f15
AM		 4096};
4097
4c52953f
AM		 4098/* Rename some of the generic section flags to better document how they
4099 are used here. */
b0dddeec
AM		 4100
4101/* Nonzero if this section has TLS related relocations. */
4102#define has_tls_reloc sec_flg0
4103
4104/* Nonzero if this section has a call to __tls_get_addr. */
4105#define has_tls_get_addr_call sec_flg1
4106
4107/* Nonzero if this section has any toc or got relocs. */
4108#define has_toc_reloc sec_flg2
4109
4110/* Nonzero if this section has a call to another section that uses
4111 the toc or got. */
d77c8a4b 4112#define makes_toc_func_call sec_flg3
b0dddeec
AM		 4113
4114/* Recursion protection when determining above flag. */
d77c8a4b 4115#define call_check_in_progress sec_flg4
70cc837d 4116#define call_check_done sec_flg5
4c52953f 4117
65f38f15
AM		 4118/* Get the ppc64 ELF linker hash table from a link_info structure. */
4119
4120#define ppc_hash_table(p) \
4dfe6ac6
NC		 4121 (elf_hash_table_id ((struct elf_link_hash_table *) ((p)->hash)) \
4122 == PPC64_ELF_DATA ? ((struct ppc_link_hash_table *) ((p)->hash)) : NULL)
65f38f15 4123
721956f4
AM		 4124#define ppc_stub_hash_lookup(table, string, create, copy) \
4125 ((struct ppc_stub_hash_entry *) \
4126 bfd_hash_lookup ((table), (string), (create), (copy)))
4127
4128#define ppc_branch_hash_lookup(table, string, create, copy) \
4129 ((struct ppc_branch_hash_entry *) \
4130 bfd_hash_lookup ((table), (string), (create), (copy)))
4131
4132/* Create an entry in the stub hash table. */
4133
4134static struct bfd_hash_entry *
4ce794b7
AM		 4135stub_hash_newfunc (struct bfd_hash_entry *entry,
4136 struct bfd_hash_table *table,
4137 const char *string)
721956f4
AM		 4138{
4139 /* Allocate the structure if it has not already been allocated by a
4140 subclass. */
4141 if (entry == NULL)
4142 {
4143 entry = bfd_hash_allocate (table, sizeof (struct ppc_stub_hash_entry));
4144 if (entry == NULL)
4145 return entry;
4146 }
4147
4148 /* Call the allocation method of the superclass. */
4149 entry = bfd_hash_newfunc (entry, table, string);
4150 if (entry != NULL)
4151 {
4152 struct ppc_stub_hash_entry *eh;
4153
4154 /* Initialize the local fields. */
4155 eh = (struct ppc_stub_hash_entry *) entry;
ad8e1ba5 4156 eh->stub_type = ppc_stub_none;
6f20ed8a 4157 eh->group = NULL;
721956f4
AM		 4158 eh->stub_offset = 0;
4159 eh->target_value = 0;
4160 eh->target_section = NULL;
721956f4 4161 eh->h = NULL;
6911b7dc 4162 eh->plt_ent = NULL;
6911b7dc 4163 eh->other = 0;
721956f4
AM		 4164 }
4165
4166 return entry;
4167}
4168
4169/* Create an entry in the branch hash table. */
4170
4171static struct bfd_hash_entry *
4ce794b7
AM		 4172branch_hash_newfunc (struct bfd_hash_entry *entry,
4173 struct bfd_hash_table *table,
4174 const char *string)
721956f4
AM		 4175{
4176 /* Allocate the structure if it has not already been allocated by a
4177 subclass. */
4178 if (entry == NULL)
4179 {
4180 entry = bfd_hash_allocate (table, sizeof (struct ppc_branch_hash_entry));
4181 if (entry == NULL)
4182 return entry;
4183 }
4184
4185 /* Call the allocation method of the superclass. */
4186 entry = bfd_hash_newfunc (entry, table, string);
4187 if (entry != NULL)
4188 {
4189 struct ppc_branch_hash_entry *eh;
4190
4191 /* Initialize the local fields. */
4192 eh = (struct ppc_branch_hash_entry *) entry;
4193 eh->offset = 0;
4194 eh->iter = 0;
4195 }
4196
4197 return entry;
4198}
4199
65f38f15
AM		 4200/* Create an entry in a ppc64 ELF linker hash table. */
4201
4202static struct bfd_hash_entry *
4ce794b7
AM		 4203link_hash_newfunc (struct bfd_hash_entry *entry,
4204 struct bfd_hash_table *table,
4205 const char *string)
65f38f15
AM		 4206{
4207 /* Allocate the structure if it has not already been allocated by a
4208 subclass. */
4209 if (entry == NULL)
4210 {
4211 entry = bfd_hash_allocate (table, sizeof (struct ppc_link_hash_entry));
4212 if (entry == NULL)
4213 return entry;
4214 }
4215
4216 /* Call the allocation method of the superclass. */
4217 entry = _bfd_elf_link_hash_newfunc (entry, table, string);
4218 if (entry != NULL)
4219 {
4220 struct ppc_link_hash_entry *eh = (struct ppc_link_hash_entry *) entry;
4221
b3fac117 4222 memset (&eh->u.stub_cache, 0,
908b32fc 4223 (sizeof (struct ppc_link_hash_entry)
b3fac117
AM		 4224 - offsetof (struct ppc_link_hash_entry, u.stub_cache)));
4225
4226 /* When making function calls, old ABI code references function entry
4227 points (dot symbols), while new ABI code references the function
4228 descriptor symbol. We need to make any combination of reference and
4229 definition work together, without breaking archive linking.
4230
4231 For a defined function "foo" and an undefined call to "bar":
4232 An old object defines "foo" and ".foo", references ".bar" (possibly
4233 "bar" too).
4234 A new object defines "foo" and references "bar".
4235
4236 A new object thus has no problem with its undefined symbols being
4237 satisfied by definitions in an old object. On the other hand, the
4238 old object won't have ".bar" satisfied by a new object.
4239
4240 Keep a list of newly added dot-symbols. */
4241
4242 if (string[0] == '.')
4243 {
4244 struct ppc_link_hash_table *htab;
4245
4246 htab = (struct ppc_link_hash_table *) table;
4247 eh->u.next_dot_sym = htab->dot_syms;
4248 htab->dot_syms = eh;
4249 }
65f38f15
AM		 4250 }
4251
4252 return entry;
4253}
4254
3b421ab3
AM		 4255struct tocsave_entry {
4256 asection *sec;
4257 bfd_vma offset;
4258};
4259
4260static hashval_t
4261tocsave_htab_hash (const void *p)
4262{
4263 const struct tocsave_entry *e = (const struct tocsave_entry *) p;
4264 return ((bfd_vma)(intptr_t) e->sec ^ e->offset) >> 3;
4265}
4266
4267static int
4268tocsave_htab_eq (const void *p1, const void *p2)
4269{
4270 const struct tocsave_entry *e1 = (const struct tocsave_entry *) p1;
4271 const struct tocsave_entry *e2 = (const struct tocsave_entry *) p2;
4272 return e1->sec == e2->sec && e1->offset == e2->offset;
4273}
4274
68faa637
AM		 4275/* Destroy a ppc64 ELF linker hash table. */
4276
4277static void
d495ab0d 4278ppc64_elf_link_hash_table_free (bfd *obfd)
68faa637 4279{
d495ab0d 4280 struct ppc_link_hash_table *htab;
68faa637 4281
d495ab0d 4282 htab = (struct ppc_link_hash_table *) obfd->link.hash;
68faa637
AM		 4283 if (htab->tocsave_htab)
4284 htab_delete (htab->tocsave_htab);
d495ab0d
AM		 4285 bfd_hash_table_free (&htab->branch_hash_table);
4286 bfd_hash_table_free (&htab->stub_hash_table);
4287 _bfd_elf_link_hash_table_free (obfd);
68faa637
AM		 4288}
4289
65f38f15
AM		 4290/* Create a ppc64 ELF linker hash table. */
4291
4292static struct bfd_link_hash_table *
4ce794b7 4293ppc64_elf_link_hash_table_create (bfd *abfd)
65f38f15
AM		 4294{
4295 struct ppc_link_hash_table *htab;
4296 bfd_size_type amt = sizeof (struct ppc_link_hash_table);
4297
4ce794b7 4298 htab = bfd_zmalloc (amt);
65f38f15
AM		 4299 if (htab == NULL)
4300 return NULL;
4301
66eb6687 4302 if (!_bfd_elf_link_hash_table_init (&htab->elf, abfd, link_hash_newfunc,
4dfe6ac6
NC		 4303 sizeof (struct ppc_link_hash_entry),
4304 PPC64_ELF_DATA))
65f38f15 4305 {
e2d34d7d 4306 free (htab);
65f38f15
AM		 4307 return NULL;
4308 }
4309
721956f4 4310 /* Init the stub hash table too. */
66eb6687
AM		 4311 if (!bfd_hash_table_init (&htab->stub_hash_table, stub_hash_newfunc,
4312 sizeof (struct ppc_stub_hash_entry)))
2915c55b 4313 {
d495ab0d 4314 _bfd_elf_link_hash_table_free (abfd);
2915c55b
JK		 4315 return NULL;
4316 }
721956f4
AM		 4317
4318 /* And the branch hash table. */
66eb6687
AM		 4319 if (!bfd_hash_table_init (&htab->branch_hash_table, branch_hash_newfunc,
4320 sizeof (struct ppc_branch_hash_entry)))
2915c55b
JK		 4321 {
4322 bfd_hash_table_free (&htab->stub_hash_table);
d495ab0d 4323 _bfd_elf_link_hash_table_free (abfd);
2915c55b
JK		 4324 return NULL;
4325 }
721956f4 4326
3b421ab3
AM		 4327 htab->tocsave_htab = htab_try_create (1024,
4328 tocsave_htab_hash,
4329 tocsave_htab_eq,
4330 NULL);
4331 if (htab->tocsave_htab == NULL)
2915c55b 4332 {
d495ab0d 4333 ppc64_elf_link_hash_table_free (abfd);
2915c55b
JK		 4334 return NULL;
4335 }
d495ab0d 4336 htab->elf.root.hash_table_free = ppc64_elf_link_hash_table_free;
3b421ab3 4337
3254fd24
AM		 4338 /* Initializing two fields of the union is just cosmetic. We really
4339 only care about glist, but when compiled on a 32-bit host the
4340 bfd_vma fields are larger. Setting the bfd_vma to zero makes
4341 debugger inspection of these fields look nicer. */
a6aa5195
AM		 4342 htab->elf.init_got_refcount.refcount = 0;
4343 htab->elf.init_got_refcount.glist = NULL;
4344 htab->elf.init_plt_refcount.refcount = 0;
4345 htab->elf.init_plt_refcount.glist = NULL;
4346 htab->elf.init_got_offset.offset = 0;
4347 htab->elf.init_got_offset.glist = NULL;
4348 htab->elf.init_plt_offset.offset = 0;
4349 htab->elf.init_plt_offset.glist = NULL;
3254fd24 4350
65f38f15
AM		 4351 return &htab->elf.root;
4352}
4353
bfeb4a28
AM		 4354/* Create sections for linker generated code. */
4355
4356static bfd_boolean
4357create_linkage_sections (bfd *dynobj, struct bfd_link_info *info)
4358{
4359 struct ppc_link_hash_table *htab;
4360 flagword flags;
4361
4362 htab = ppc_hash_table (info);
4363
bfeb4a28
AM		 4364 flags = (SEC_ALLOC | SEC_LOAD | SEC_CODE | SEC_READONLY
4365 | SEC_HAS_CONTENTS | SEC_IN_MEMORY | SEC_LINKER_CREATED);
b32547cd
AM		 4366 if (htab->params->save_restore_funcs)
4367 {
4368 /* Create .sfpr for code to save and restore fp regs. */
4369 htab->sfpr = bfd_make_section_anyway_with_flags (dynobj, ".sfpr",
4370 flags);
4371 if (htab->sfpr == NULL
4372 || ! bfd_set_section_alignment (dynobj, htab->sfpr, 2))
4373 return FALSE;
4374 }
4375
4376 if (bfd_link_relocatable (info))
4377 return TRUE;
bfeb4a28
AM		 4378
4379 /* Create .glink for lazy dynamic linking support. */
4380 htab->glink = bfd_make_section_anyway_with_flags (dynobj, ".glink",
4381 flags);
4382 if (htab->glink == NULL
4383 || ! bfd_set_section_alignment (dynobj, htab->glink, 3))
4384 return FALSE;
4385
4386 if (!info->no_ld_generated_unwind_info)
4387 {
4388 flags = (SEC_ALLOC | SEC_LOAD | SEC_READONLY | SEC_HAS_CONTENTS
4389 | SEC_IN_MEMORY | SEC_LINKER_CREATED);
4390 htab->glink_eh_frame = bfd_make_section_anyway_with_flags (dynobj,
4391 ".eh_frame",
4392 flags);
4393 if (htab->glink_eh_frame == NULL
4394 || !bfd_set_section_alignment (dynobj, htab->glink_eh_frame, 2))
4395 return FALSE;
4396 }
4397
4398 flags = SEC_ALLOC | SEC_LINKER_CREATED;
33e44f2e
AM		 4399 htab->elf.iplt = bfd_make_section_anyway_with_flags (dynobj, ".iplt", flags);
4400 if (htab->elf.iplt == NULL
4401 || ! bfd_set_section_alignment (dynobj, htab->elf.iplt, 3))
bfeb4a28
AM		 4402 return FALSE;
4403
4404 flags = (SEC_ALLOC | SEC_LOAD | SEC_READONLY
4405 | SEC_HAS_CONTENTS | SEC_IN_MEMORY | SEC_LINKER_CREATED);
33e44f2e
AM		 4406 htab->elf.irelplt
4407 = bfd_make_section_anyway_with_flags (dynobj, ".rela.iplt", flags);
4408 if (htab->elf.irelplt == NULL
4409 || ! bfd_set_section_alignment (dynobj, htab->elf.irelplt, 3))
bfeb4a28
AM		 4410 return FALSE;
4411
4412 /* Create branch lookup table for plt_branch stubs. */
4413 flags = (SEC_ALLOC | SEC_LOAD
4414 | SEC_HAS_CONTENTS | SEC_IN_MEMORY | SEC_LINKER_CREATED);
4415 htab->brlt = bfd_make_section_anyway_with_flags (dynobj, ".branch_lt",
4416 flags);
4417 if (htab->brlt == NULL
4418 || ! bfd_set_section_alignment (dynobj, htab->brlt, 3))
4419 return FALSE;
4420
0e1862bb 4421 if (!bfd_link_pic (info))
bfeb4a28
AM		 4422 return TRUE;
4423
4424 flags = (SEC_ALLOC | SEC_LOAD | SEC_READONLY
4425 | SEC_HAS_CONTENTS | SEC_IN_MEMORY | SEC_LINKER_CREATED);
4426 htab->relbrlt = bfd_make_section_anyway_with_flags (dynobj,
4427 ".rela.branch_lt",
4428 flags);
4429 if (htab->relbrlt == NULL
4430 || ! bfd_set_section_alignment (dynobj, htab->relbrlt, 3))
4431 return FALSE;
4432
4433 return TRUE;
4434}
4435
e717da7e
AM		 4436/* Satisfy the ELF linker by filling in some fields in our fake bfd. */
4437
bfeb4a28 4438bfd_boolean
e7d1c40c
AM		 4439ppc64_elf_init_stub_bfd (struct bfd_link_info *info,
4440 struct ppc64_elf_params *params)
e717da7e
AM		 4441{
4442 struct ppc_link_hash_table *htab;
4443
e7d1c40c 4444 elf_elfheader (params->stub_bfd)->e_ident[EI_CLASS] = ELFCLASS64;
e717da7e
AM		 4445
4446/* Always hook our dynamic sections into the first bfd, which is the
4447 linker created stub bfd. This ensures that the GOT header is at
4448 the start of the output TOC section. */
4449 htab = ppc_hash_table (info);
e7d1c40c
AM		 4450 htab->elf.dynobj = params->stub_bfd;
4451 htab->params = params;
bfeb4a28 4452
bfeb4a28 4453 return create_linkage_sections (htab->elf.dynobj, info);
e717da7e
AM		 4454}
4455
721956f4
AM		 4456/* Build a name for an entry in the stub hash table. */
4457
4458static char *
4ce794b7
AM		 4459ppc_stub_name (const asection *input_section,
4460 const asection *sym_sec,
4461 const struct ppc_link_hash_entry *h,
4462 const Elf_Internal_Rela *rel)
721956f4
AM		 4463{
4464 char *stub_name;
bcaa2f82 4465 ssize_t len;
721956f4
AM		 4466
4467 /* rel->r_addend is actually 64 bit, but who uses more than +/- 2^31
4468 offsets from a sym as a branch target? In fact, we could
4469 probably assume the addend is always zero. */
4470 BFD_ASSERT (((int) rel->r_addend & 0xffffffff) == rel->r_addend);
4471
4472 if (h)
4473 {
4474 len = 8 + 1 + strlen (h->elf.root.root.string) + 1 + 8 + 1;
4475 stub_name = bfd_malloc (len);
46de2a7c
AM		 4476 if (stub_name == NULL)
4477 return stub_name;
4478
bcaa2f82
AM		 4479 len = sprintf (stub_name, "%08x.%s+%x",
4480 input_section->id & 0xffffffff,
4481 h->elf.root.root.string,
4482 (int) rel->r_addend & 0xffffffff);
721956f4
AM		 4483 }
4484 else
4485 {
ad8e1ba5 4486 len = 8 + 1 + 8 + 1 + 8 + 1 + 8 + 1;
721956f4 4487 stub_name = bfd_malloc (len);
46de2a7c
AM		 4488 if (stub_name == NULL)
4489 return stub_name;
4490
bcaa2f82
AM		 4491 len = sprintf (stub_name, "%08x.%x:%x+%x",
4492 input_section->id & 0xffffffff,
4493 sym_sec->id & 0xffffffff,
4494 (int) ELF64_R_SYM (rel->r_info) & 0xffffffff,
4495 (int) rel->r_addend & 0xffffffff);
721956f4 4496 }
bcaa2f82 4497 if (len > 2 && stub_name[len - 2] == '+' && stub_name[len - 1] == '0')
ee75fd95 4498 stub_name[len - 2] = 0;
721956f4
AM		 4499 return stub_name;
4500}
4501
4502/* Look up an entry in the stub hash. Stub entries are cached because
4503 creating the stub name takes a bit of time. */
4504
4505static struct ppc_stub_hash_entry *
4ce794b7
AM		 4506ppc_get_stub_entry (const asection *input_section,
4507 const asection *sym_sec,
039b3fef 4508 struct ppc_link_hash_entry *h,
4ce794b7
AM		 4509 const Elf_Internal_Rela *rel,
4510 struct ppc_link_hash_table *htab)
721956f4
AM		 4511{
4512 struct ppc_stub_hash_entry *stub_entry;
6f20ed8a 4513 struct map_stub *group;
721956f4
AM		 4514
4515 /* If this input section is part of a group of sections sharing one
4516 stub section, then use the id of the first section in the group.
4517 Stub names need to include a section id, as there may well be
4518 more than one stub used to reach say, printf, and we need to
4519 distinguish between them. */
6f20ed8a 4520 group = htab->sec_info[input_section->id].u.group;
89d77b8a
AM		 4521 if (group == NULL)
4522 return NULL;
721956f4 4523
b3fac117
AM		 4524 if (h != NULL && h->u.stub_cache != NULL
4525 && h->u.stub_cache->h == h
6f20ed8a 4526 && h->u.stub_cache->group == group)
721956f4 4527 {
b3fac117 4528 stub_entry = h->u.stub_cache;
721956f4
AM		 4529 }
4530 else
4531 {
4532 char *stub_name;
4533
6f20ed8a 4534 stub_name = ppc_stub_name (group->link_sec, sym_sec, h, rel);
721956f4
AM		 4535 if (stub_name == NULL)
4536 return NULL;
4537
4538 stub_entry = ppc_stub_hash_lookup (&htab->stub_hash_table,
b34976b6 4539 stub_name, FALSE, FALSE);
721956f4 4540 if (h != NULL)
b3fac117 4541 h->u.stub_cache = stub_entry;
721956f4
AM		 4542
4543 free (stub_name);
4544 }
4545
4546 return stub_entry;
4547}
4548
4549/* Add a new stub entry to the stub hash. Not all fields of the new
4550 stub entry are initialised. */
4551
4552static struct ppc_stub_hash_entry *
4ce794b7
AM		 4553ppc_add_stub (const char *stub_name,
4554 asection *section,
25f53a85 4555 struct bfd_link_info *info)
721956f4 4556{
25f53a85 4557 struct ppc_link_hash_table *htab = ppc_hash_table (info);
6f20ed8a 4558 struct map_stub *group;
721956f4
AM		 4559 asection *link_sec;
4560 asection *stub_sec;
4561 struct ppc_stub_hash_entry *stub_entry;
4562
6f20ed8a
AM		 4563 group = htab->sec_info[section->id].u.group;
4564 link_sec = group->link_sec;
4565 stub_sec = group->stub_sec;
721956f4
AM		 4566 if (stub_sec == NULL)
4567 {
6f20ed8a
AM		 4568 size_t namelen;
4569 bfd_size_type len;
4570 char *s_name;
721956f4 4571
6f20ed8a
AM		 4572 namelen = strlen (link_sec->name);
4573 len = namelen + sizeof (STUB_SUFFIX);
4574 s_name = bfd_alloc (htab->params->stub_bfd, len);
4575 if (s_name == NULL)
4576 return NULL;
721956f4 4577
6f20ed8a
AM		 4578 memcpy (s_name, link_sec->name, namelen);
4579 memcpy (s_name + namelen, STUB_SUFFIX, sizeof (STUB_SUFFIX));
4580 stub_sec = (*htab->params->add_stub_section) (s_name, link_sec);
4581 if (stub_sec == NULL)
4582 return NULL;
4583 group->stub_sec = stub_sec;
721956f4
AM		 4584 }
4585
4586 /* Enter this entry into the linker stub hash table. */
4587 stub_entry = ppc_stub_hash_lookup (&htab->stub_hash_table, stub_name,
b34976b6 4588 TRUE, FALSE);
721956f4
AM		 4589 if (stub_entry == NULL)
4590 {
8de848d8 4591 info->callbacks->einfo (_("%P: %B: cannot create stub entry %s\n"),
25f53a85 4592 section->owner, stub_name);
721956f4
AM		 4593 return NULL;
4594 }
4595
6f20ed8a 4596 stub_entry->group = group;
721956f4 4597 stub_entry->stub_offset = 0;
721956f4
AM		 4598 return stub_entry;
4599}
4600
e717da7e
AM		 4601/* Create .got and .rela.got sections in ABFD, and .got in dynobj if
4602 not already done. */
65f38f15 4603
b34976b6 4604static bfd_boolean
e717da7e 4605create_got_section (bfd *abfd, struct bfd_link_info *info)
65f38f15 4606{
e717da7e
AM		 4607 asection *got, *relgot;
4608 flagword flags;
4609 struct ppc_link_hash_table *htab = ppc_hash_table (info);
65f38f15 4610
0c8d6e5c 4611 if (!is_ppc64_elf (abfd))
0ffa91dd 4612 return FALSE;
4dfe6ac6
NC		 4613 if (htab == NULL)
4614 return FALSE;
0ffa91dd 4615
33e44f2e
AM		 4616 if (!htab->elf.sgot
4617 && !_bfd_elf_create_got_section (htab->elf.dynobj, info))
4618 return FALSE;
e717da7e
AM		 4619
4620 flags = (SEC_ALLOC | SEC_LOAD | SEC_HAS_CONTENTS | SEC_IN_MEMORY
4621 | SEC_LINKER_CREATED);
4622
c456f082 4623 got = bfd_make_section_anyway_with_flags (abfd, ".got", flags);
e717da7e 4624 if (!got
e717da7e
AM		 4625 || !bfd_set_section_alignment (abfd, got, 3))
4626 return FALSE;
65f38f15 4627
c456f082
AM		 4628 relgot = bfd_make_section_anyway_with_flags (abfd, ".rela.got",
4629 flags | SEC_READONLY);
e717da7e 4630 if (!relgot
e717da7e 4631 || ! bfd_set_section_alignment (abfd, relgot, 3))
b34976b6 4632 return FALSE;
e717da7e
AM		 4633
4634 ppc64_elf_tdata (abfd)->got = got;
4635 ppc64_elf_tdata (abfd)->relgot = relgot;
b34976b6 4636 return TRUE;
65f38f15 4637}
5bd4f169 4638
82bd7b59 4639/* Create the dynamic sections, and set up shortcuts. */
5bd4f169 4640
b34976b6 4641static bfd_boolean
4ce794b7 4642ppc64_elf_create_dynamic_sections (bfd *dynobj, struct bfd_link_info *info)
5bd4f169 4643{
65f38f15 4644 struct ppc_link_hash_table *htab;
5bd4f169 4645
65f38f15 4646 if (!_bfd_elf_create_dynamic_sections (dynobj, info))
b34976b6 4647 return FALSE;
65f38f15 4648
e717da7e 4649 htab = ppc_hash_table (info);
4dfe6ac6
NC		 4650 if (htab == NULL)
4651 return FALSE;
4652
3d4d4302 4653 htab->dynbss = bfd_get_linker_section (dynobj, ".dynbss");
0e1862bb 4654 if (!bfd_link_pic (info))
3d4d4302 4655 htab->relbss = bfd_get_linker_section (dynobj, ".rela.bss");
65f38f15 4656
33e44f2e 4657 if (!htab->elf.sgot || !htab->elf.splt || !htab->elf.srelplt || !htab->dynbss
0e1862bb 4658 || (!bfd_link_pic (info) && !htab->relbss))
65f38f15
AM		 4659 abort ();
4660
b34976b6 4661 return TRUE;
5bd4f169
AM		 4662}
4663
b31867b6
AM		 4664/* Follow indirect and warning symbol links. */
4665
4666static inline struct bfd_link_hash_entry *
4667follow_link (struct bfd_link_hash_entry *h)
4668{
4669 while (h->type == bfd_link_hash_indirect
4670 || h->type == bfd_link_hash_warning)
4671 h = h->u.i.link;
4672 return h;
4673}
4674
4675static inline struct elf_link_hash_entry *
4676elf_follow_link (struct elf_link_hash_entry *h)
4677{
4678 return (struct elf_link_hash_entry *) follow_link (&h->root);
4679}
4680
4681static inline struct ppc_link_hash_entry *
4682ppc_follow_link (struct ppc_link_hash_entry *h)
4683{
4684 return (struct ppc_link_hash_entry *) follow_link (&h->elf.root);
4685}
4686
40d16e0b
AM		 4687/* Merge PLT info on FROM with that on TO. */
4688
4689static void
4690move_plt_plist (struct ppc_link_hash_entry *from,
4691 struct ppc_link_hash_entry *to)
4692{
4693 if (from->elf.plt.plist != NULL)
4694 {
4695 if (to->elf.plt.plist != NULL)
4696 {
4697 struct plt_entry **entp;
4698 struct plt_entry *ent;
4699
4700 for (entp = &from->elf.plt.plist; (ent = *entp) != NULL; )
4701 {
4702 struct plt_entry *dent;
4703
4704 for (dent = to->elf.plt.plist; dent != NULL; dent = dent->next)
4705 if (dent->addend == ent->addend)
4706 {
4707 dent->plt.refcount += ent->plt.refcount;
4708 *entp = ent->next;
4709 break;
4710 }
4711 if (dent == NULL)
4712 entp = &ent->next;
4713 }
4714 *entp = to->elf.plt.plist;
4715 }
4716
4717 to->elf.plt.plist = from->elf.plt.plist;
4718 from->elf.plt.plist = NULL;
4719 }
4720}
4721
65f38f15
AM		 4722/* Copy the extra info we tack onto an elf_link_hash_entry. */
4723
4724static void
fcfa13d2
AM		 4725ppc64_elf_copy_indirect_symbol (struct bfd_link_info *info,
4726 struct elf_link_hash_entry *dir,
4727 struct elf_link_hash_entry *ind)
65f38f15
AM		 4728{
4729 struct ppc_link_hash_entry *edir, *eind;
4730
4731 edir = (struct ppc_link_hash_entry *) dir;
4732 eind = (struct ppc_link_hash_entry *) ind;
4733
c79d6685
AM		 4734 edir->is_func |= eind->is_func;
4735 edir->is_func_descriptor |= eind->is_func_descriptor;
4736 edir->tls_mask |= eind->tls_mask;
4737 if (eind->oh != NULL)
4738 edir->oh = ppc_follow_link (eind->oh);
4739
4740 /* If called to transfer flags for a weakdef during processing
4741 of elf_adjust_dynamic_symbol, don't copy NON_GOT_REF.
4742 We clear it ourselves for ELIMINATE_COPY_RELOCS. */
4743 if (!(ELIMINATE_COPY_RELOCS
4744 && eind->elf.root.type != bfd_link_hash_indirect
4745 && edir->elf.dynamic_adjusted))
4746 edir->elf.non_got_ref |= eind->elf.non_got_ref;
4747
4748 edir->elf.ref_dynamic |= eind->elf.ref_dynamic;
4749 edir->elf.ref_regular |= eind->elf.ref_regular;
4750 edir->elf.ref_regular_nonweak |= eind->elf.ref_regular_nonweak;
4751 edir->elf.needs_plt |= eind->elf.needs_plt;
a345bc8d 4752 edir->elf.pointer_equality_needed |= eind->elf.pointer_equality_needed;
c79d6685 4753
d311bc8b
AM		 4754 /* If we were called to copy over info for a weak sym, don't copy
4755 dyn_relocs, plt/got info, or dynindx. We used to copy dyn_relocs
4756 in order to simplify readonly_dynrelocs and save a field in the
4757 symbol hash entry, but that means dyn_relocs can't be used in any
4758 tests about a specific symbol, or affect other symbol flags which
4759 are then tested.
4760 Chain weakdefs so we can get from the weakdef back to an alias.
4761 The list is circular so that we don't need to use u.weakdef as
4762 well as this list to look at all aliases. */
4763 if (eind->elf.root.type != bfd_link_hash_indirect)
4764 {
4765 struct ppc_link_hash_entry *cur, *add, *next;
4766
4767 add = eind;
4768 do
4769 {
4770 cur = edir->weakref;
4771 if (cur != NULL)
4772 {
4773 do
4774 {
4775 /* We can be called twice for the same symbols.
4776 Don't make multiple loops. */
4777 if (cur == add)
4778 return;
4779 cur = cur->weakref;
4780 } while (cur != edir);
4781 }
4782 next = add->weakref;
4783 if (cur != add)
4784 {
4785 add->weakref = edir->weakref != NULL ? edir->weakref : edir;
4786 edir->weakref = add;
4787 }
4788 add = next;
4789 } while (add != NULL && add != eind);
4790 return;
4791 }
4792
411e1bfb 4793 /* Copy over any dynamic relocs we may have on the indirect sym. */
bbd7ec4a 4794 if (eind->dyn_relocs != NULL)
65f38f15 4795 {
bbd7ec4a
AM		 4796 if (edir->dyn_relocs != NULL)
4797 {
6061a67d
AM		 4798 struct elf_dyn_relocs **pp;
4799 struct elf_dyn_relocs *p;
bbd7ec4a 4800
fcfa13d2 4801 /* Add reloc counts against the indirect sym to the direct sym
bbd7ec4a
AM		 4802 list. Merge any entries against the same section. */
4803 for (pp = &eind->dyn_relocs; (p = *pp) != NULL; )
4804 {
6061a67d 4805 struct elf_dyn_relocs *q;
bbd7ec4a
AM		 4806
4807 for (q = edir->dyn_relocs; q != NULL; q = q->next)
4808 if (q->sec == p->sec)
4809 {
4810 q->pc_count += p->pc_count;
4811 q->count += p->count;
4812 *pp = p->next;
4813 break;
4814 }
4815 if (q == NULL)
4816 pp = &p->next;
4817 }
4818 *pp = edir->dyn_relocs;
4819 }
4820
65f38f15
AM		 4821 edir->dyn_relocs = eind->dyn_relocs;
4822 eind->dyn_relocs = NULL;
4823 }
65f38f15 4824
81848ca0
AM		 4825 /* Copy over got entries that we may have already seen to the
4826 symbol which just became indirect. */
411e1bfb
AM		 4827 if (eind->elf.got.glist != NULL)
4828 {
4829 if (edir->elf.got.glist != NULL)
4830 {
4831 struct got_entry **entp;
4832 struct got_entry *ent;
4833
4834 for (entp = &eind->elf.got.glist; (ent = *entp) != NULL; )
4835 {
4836 struct got_entry *dent;
4837
4838 for (dent = edir->elf.got.glist; dent != NULL; dent = dent->next)
4839 if (dent->addend == ent->addend
e717da7e 4840 && dent->owner == ent->owner
411e1bfb
AM		 4841 && dent->tls_type == ent->tls_type)
4842 {
4843 dent->got.refcount += ent->got.refcount;
4844 *entp = ent->next;
4845 break;
4846 }
4847 if (dent == NULL)
4848 entp = &ent->next;
4849 }
4850 *entp = edir->elf.got.glist;
4851 }
4852
4853 edir->elf.got.glist = eind->elf.got.glist;
4854 eind->elf.got.glist = NULL;
4855 }
4856
4857 /* And plt entries. */
40d16e0b 4858 move_plt_plist (eind, edir);
411e1bfb 4859
fcfa13d2 4860 if (eind->elf.dynindx != -1)
411e1bfb 4861 {
fcfa13d2
AM		 4862 if (edir->elf.dynindx != -1)
4863 _bfd_elf_strtab_delref (elf_hash_table (info)->dynstr,
4864 edir->elf.dynstr_index);
411e1bfb
AM		 4865 edir->elf.dynindx = eind->elf.dynindx;
4866 edir->elf.dynstr_index = eind->elf.dynstr_index;
4867 eind->elf.dynindx = -1;
4868 eind->elf.dynstr_index = 0;
4869 }
411e1bfb
AM		 4870}
4871
8387904d
AM		 4872/* Find the function descriptor hash entry from the given function code
4873 hash entry FH. Link the entries via their OH fields. */
4874
4875static struct ppc_link_hash_entry *
b31867b6 4876lookup_fdh (struct ppc_link_hash_entry *fh, struct ppc_link_hash_table *htab)
8387904d
AM		 4877{
4878 struct ppc_link_hash_entry *fdh = fh->oh;
4879
4880 if (fdh == NULL)
4881 {
4882 const char *fd_name = fh->elf.root.root.string + 1;
4883
4884 fdh = (struct ppc_link_hash_entry *)
4885 elf_link_hash_lookup (&htab->elf, fd_name, FALSE, FALSE, FALSE);
b31867b6
AM		 4886 if (fdh == NULL)
4887 return fdh;
4888
4889 fdh->is_func_descriptor = 1;
4890 fdh->oh = fh;
4891 fh->is_func = 1;
4892 fh->oh = fdh;
8387904d
AM		 4893 }
4894
b31867b6 4895 return ppc_follow_link (fdh);
8387904d
AM		 4896}
4897
bb700d78
AM		 4898/* Make a fake function descriptor sym for the code sym FH. */
4899
4900static struct ppc_link_hash_entry *
4901make_fdh (struct bfd_link_info *info,
908b32fc 4902 struct ppc_link_hash_entry *fh)
bb700d78
AM		 4903{
4904 bfd *abfd;
4905 asymbol *newsym;
4906 struct bfd_link_hash_entry *bh;
4907 struct ppc_link_hash_entry *fdh;
4908
4909 abfd = fh->elf.root.u.undef.abfd;
4910 newsym = bfd_make_empty_symbol (abfd);
4911 newsym->name = fh->elf.root.root.string + 1;
4912 newsym->section = bfd_und_section_ptr;
4913 newsym->value = 0;
908b32fc 4914 newsym->flags = BSF_WEAK;
bb700d78
AM		 4915
4916 bh = NULL;
4917 if (!_bfd_generic_link_add_one_symbol (info, abfd, newsym->name,
4918 newsym->flags, newsym->section,
4919 newsym->value, NULL, FALSE, FALSE,
4920 &bh))
4921 return NULL;
4922
4923 fdh = (struct ppc_link_hash_entry *) bh;
4924 fdh->elf.non_elf = 0;
908b32fc
AM		 4925 fdh->fake = 1;
4926 fdh->is_func_descriptor = 1;
4927 fdh->oh = fh;
4928 fh->is_func = 1;
4929 fh->oh = fdh;
bb700d78
AM		 4930 return fdh;
4931}
4932
8387904d
AM		 4933/* Fix function descriptor symbols defined in .opd sections to be
4934 function type. */
555cd476
AM		 4935
4936static bfd_boolean
c16153ae 4937ppc64_elf_add_symbol_hook (bfd *ibfd,
e054468f 4938 struct bfd_link_info *info,
555cd476 4939 Elf_Internal_Sym *isym,
6911b7dc 4940 const char **name,
555cd476
AM		 4941 flagword *flags ATTRIBUTE_UNUSED,
4942 asection **sec,
b53dfeb2 4943 bfd_vma *value)
555cd476 4944{
a43942db 4945 if (ELF_ST_TYPE (isym->st_info) == STT_GNU_IFUNC
f1885d1e
AM		 4946 && (ibfd->flags & DYNAMIC) == 0
4947 && bfd_get_flavour (info->output_bfd) == bfd_target_elf_flavour)
a43942db 4948 elf_tdata (info->output_bfd)->has_gnu_symbols |= elf_gnu_symbol_ifunc;
f64b2e8d 4949
b53dfeb2 4950 if (*sec != NULL
f1885d1e 4951 && strcmp ((*sec)->name, ".opd") == 0)
b53dfeb2
AM		 4952 {
4953 asection *code_sec;
4954
4955 if (!(ELF_ST_TYPE (isym->st_info) == STT_GNU_IFUNC
4956 || ELF_ST_TYPE (isym->st_info) == STT_FUNC))
4957 isym->st_info = ELF_ST_INFO (ELF_ST_BIND (isym->st_info), STT_FUNC);
4958
4959 /* If the symbol is a function defined in .opd, and the function
4960 code is in a discarded group, let it appear to be undefined. */
0e1862bb 4961 if (!bfd_link_relocatable (info)
b53dfeb2
AM		 4962 && (*sec)->reloc_count != 0
4963 && opd_entry_value (*sec, *value, &code_sec, NULL,
4964 FALSE) != (bfd_vma) -1
4965 && discarded_section (code_sec))
4966 {
4967 *sec = bfd_und_section_ptr;
4968 isym->st_shndx = SHN_UNDEF;
4969 }
4970 }
dbd1e97e
AM		 4971 else if (*sec != NULL
4972 && strcmp ((*sec)->name, ".toc") == 0
4973 && ELF_ST_TYPE (isym->st_info) == STT_OBJECT)
4974 {
4975 struct ppc_link_hash_table *htab = ppc_hash_table (info);
4976 if (htab != NULL)
4977 htab->params->object_in_toc = 1;
4978 }
433817dd 4979
6911b7dc
AM		 4980 if ((STO_PPC64_LOCAL_MASK & isym->st_other) != 0)
4981 {
4982 if (abiversion (ibfd) == 0)
4983 set_abiversion (ibfd, 2);
4984 else if (abiversion (ibfd) == 1)
4985 {
4986 info->callbacks->einfo (_("%P: symbol '%s' has invalid st_other"
4987 " for ABI version 1\n"), name);
4988 bfd_set_error (bfd_error_bad_value);
4989 return FALSE;
4990 }
4991 }
4992
555cd476
AM		 4993 return TRUE;
4994}
4995
6911b7dc
AM		 4996/* Merge non-visibility st_other attributes: local entry point. */
4997
4998static void
4999ppc64_elf_merge_symbol_attribute (struct elf_link_hash_entry *h,
5000 const Elf_Internal_Sym *isym,
5001 bfd_boolean definition,
5002 bfd_boolean dynamic)
5003{
5004 if (definition && !dynamic)
5005 h->other = ((isym->st_other & ~ELF_ST_VISIBILITY (-1))
5006 | ELF_ST_VISIBILITY (h->other));
5007}
5008
8387904d 5009/* This function makes an old ABI object reference to ".bar" cause the
908b32fc
AM		 5010 inclusion of a new ABI object archive that defines "bar".
5011 NAME is a symbol defined in an archive. Return a symbol in the hash
5012 table that might be satisfied by the archive symbols. */
8387904d
AM		 5013
5014static struct elf_link_hash_entry *
5015ppc64_elf_archive_symbol_lookup (bfd *abfd,
5016 struct bfd_link_info *info,
5017 const char *name)
5018{
5019 struct elf_link_hash_entry *h;
5020 char *dot_name;
5021 size_t len;
5022
5023 h = _bfd_elf_archive_symbol_lookup (abfd, info, name);
908b32fc
AM		 5024 if (h != NULL
5025 /* Don't return this sym if it is a fake function descriptor
5026 created by add_symbol_adjust. */
5027 && !(h->root.type == bfd_link_hash_undefweak
5028 && ((struct ppc_link_hash_entry *) h)->fake))
8387904d
AM		 5029 return h;
5030
5031 if (name[0] == '.')
5032 return h;
5033
5034 len = strlen (name);
5035 dot_name = bfd_alloc (abfd, len + 2);
5036 if (dot_name == NULL)
5037 return (struct elf_link_hash_entry *) 0 - 1;
5038 dot_name[0] = '.';
5039 memcpy (dot_name + 1, name, len + 1);
5040 h = _bfd_elf_archive_symbol_lookup (abfd, info, dot_name);
5041 bfd_release (abfd, dot_name);
5042 return h;
5043}
5044
5045/* This function satisfies all old ABI object references to ".bar" if a
99877b66
AM		 5046 new ABI object defines "bar". Well, at least, undefined dot symbols
5047 are made weak. This stops later archive searches from including an
5048 object if we already have a function descriptor definition. It also
35b0ce59
AM		 5049 prevents the linker complaining about undefined symbols.
5050 We also check and correct mismatched symbol visibility here. The
5051 most restrictive visibility of the function descriptor and the
5052 function entry symbol is used. */
8387904d
AM		 5053
5054static bfd_boolean
b3fac117 5055add_symbol_adjust (struct ppc_link_hash_entry *eh, struct bfd_link_info *info)
8387904d 5056{
8387904d
AM		 5057 struct ppc_link_hash_table *htab;
5058 struct ppc_link_hash_entry *fdh;
5059
b3fac117 5060 if (eh->elf.root.type == bfd_link_hash_indirect)
8387904d
AM		 5061 return TRUE;
5062
b3fac117
AM		 5063 if (eh->elf.root.type == bfd_link_hash_warning)
5064 eh = (struct ppc_link_hash_entry *) eh->elf.root.u.i.link;
8387904d 5065
b3fac117
AM		 5066 if (eh->elf.root.root.string[0] != '.')
5067 abort ();
8387904d 5068
b3fac117 5069 htab = ppc_hash_table (info);
4dfe6ac6
NC		 5070 if (htab == NULL)
5071 return FALSE;
5072
b31867b6
AM		 5073 fdh = lookup_fdh (eh, htab);
5074 if (fdh == NULL)
5075 {
0e1862bb 5076 if (!bfd_link_relocatable (info)
b31867b6
AM		 5077 && (eh->elf.root.type == bfd_link_hash_undefined
5078 || eh->elf.root.type == bfd_link_hash_undefweak)
5079 && eh->elf.ref_regular)
5080 {
5081 /* Make an undefweak function descriptor sym, which is enough to
5082 pull in an --as-needed shared lib, but won't cause link
5083 errors. Archives are handled elsewhere. */
5084 fdh = make_fdh (info, eh);
5085 if (fdh == NULL)
5086 return FALSE;
5087 fdh->elf.ref_regular = 1;
5088 }
bb700d78 5089 }
b31867b6 5090 else
8387904d 5091 {
35b0ce59
AM		 5092 unsigned entry_vis = ELF_ST_VISIBILITY (eh->elf.other) - 1;
5093 unsigned descr_vis = ELF_ST_VISIBILITY (fdh->elf.other) - 1;
5094 if (entry_vis < descr_vis)
5095 fdh->elf.other += entry_vis - descr_vis;
5096 else if (entry_vis > descr_vis)
5097 eh->elf.other += descr_vis - entry_vis;
5098
e87d886e
AM		 5099 if ((fdh->elf.root.type == bfd_link_hash_defined
5100 || fdh->elf.root.type == bfd_link_hash_defweak)
5101 && eh->elf.root.type == bfd_link_hash_undefined)
35b0ce59
AM		 5102 {
5103 eh->elf.root.type = bfd_link_hash_undefweak;
5104 eh->was_undefined = 1;
5105 htab->twiddled_syms = 1;
5106 }
8387904d 5107 }
99877b66 5108
8387904d
AM		 5109 return TRUE;
5110}
5111
f6c7c3e8
AM		 5112/* Set up opd section info and abiversion for IBFD, and process list
5113 of dot-symbols we made in link_hash_newfunc. */
b3fac117 5114
8387904d 5115static bfd_boolean
f6c7c3e8 5116ppc64_elf_before_check_relocs (bfd *ibfd, struct bfd_link_info *info)
8387904d 5117{
99877b66 5118 struct ppc_link_hash_table *htab;
b3fac117 5119 struct ppc_link_hash_entry **p, *eh;
459609d6 5120 asection *opd = bfd_get_section_by_name (ibfd, ".opd");
433817dd 5121
459609d6 5122 if (opd != NULL && opd->size != 0)
b3fac117 5123 {
459609d6
AM		 5124 if (abiversion (ibfd) == 0)
5125 set_abiversion (ibfd, 1);
8a2058b5 5126 else if (abiversion (ibfd) >= 2)
f6c7c3e8 5127 {
459609d6
AM		 5128 info->callbacks->einfo (_("%P: %B .opd not allowed in ABI"
5129 " version %d\n"),
5130 ibfd, abiversion (ibfd));
5131 bfd_set_error (bfd_error_bad_value);
5132 return FALSE;
f6c7c3e8
AM		 5133 }
5134
459609d6
AM		 5135 if ((ibfd->flags & DYNAMIC) == 0
5136 && (opd->flags & SEC_RELOC) != 0
5137 && opd->reloc_count != 0
5138 && !bfd_is_abs_section (opd->output_section))
b3fac117 5139 {
459609d6
AM		 5140 /* Garbage collection needs some extra help with .opd sections.
5141 We don't want to necessarily keep everything referenced by
5142 relocs in .opd, as that would keep all functions. Instead,
5143 if we reference an .opd symbol (a function descriptor), we
5144 want to keep the function code symbol's section. This is
5145 easy for global symbols, but for local syms we need to keep
5146 information about the associated function section. */
5147 bfd_size_type amt;
5148 asection **opd_sym_map;
5149
51aecdc5 5150 amt = OPD_NDX (opd->size) * sizeof (*opd_sym_map);
459609d6
AM		 5151 opd_sym_map = bfd_zalloc (ibfd, amt);
5152 if (opd_sym_map == NULL)
b3fac117 5153 return FALSE;
459609d6
AM		 5154 ppc64_elf_section_data (opd)->u.opd.func_sec = opd_sym_map;
5155 BFD_ASSERT (ppc64_elf_section_data (opd)->sec_type == sec_normal);
5156 ppc64_elf_section_data (opd)->sec_type = sec_opd;
b3fac117
AM		 5157 }
5158 }
5159
459609d6
AM		 5160 if (!is_ppc64_elf (info->output_bfd))
5161 return TRUE;
5162 htab = ppc_hash_table (info);
5163 if (htab == NULL)
5164 return FALSE;
5165
5166 /* For input files without an explicit abiversion in e_flags
5167 we should have flagged any with symbol st_other bits set
5168 as ELFv1 and above flagged those with .opd as ELFv2.
5169 Set the output abiversion if not yet set, and for any input
5170 still ambiguous, take its abiversion from the output.
5171 Differences in ABI are reported later. */
5172 if (abiversion (info->output_bfd) == 0)
5173 set_abiversion (info->output_bfd, abiversion (ibfd));
5174 else if (abiversion (ibfd) == 0)
5175 set_abiversion (ibfd, abiversion (info->output_bfd));
5176
5177 p = &htab->dot_syms;
5178 while ((eh = *p) != NULL)
5179 {
5180 *p = NULL;
5181 if (&eh->elf == htab->elf.hgot)
5182 ;
5183 else if (htab->elf.hgot == NULL
5184 && strcmp (eh->elf.root.root.string, ".TOC.") == 0)
5185 htab->elf.hgot = &eh->elf;
5186 else if (!add_symbol_adjust (eh, info))
5187 return FALSE;
5188 p = &eh->u.next_dot_sym;
5189 }
5190
b3fac117
AM		 5191 /* Clear the list for non-ppc64 input files. */
5192 p = &htab->dot_syms;
5193 while ((eh = *p) != NULL)
5194 {
5195 *p = NULL;
5196 p = &eh->u.next_dot_sym;
5197 }
99877b66
AM		 5198
5199 /* We need to fix the undefs list for any syms we have twiddled to
57e7d118 5200 undefweak. */
99877b66
AM		 5201 if (htab->twiddled_syms)
5202 {
77cfaee6 5203 bfd_link_repair_undef_list (&htab->elf.root);
99877b66
AM		 5204 htab->twiddled_syms = 0;
5205 }
b3fac117 5206 return TRUE;
8387904d
AM		 5207}
5208
97fed1c9
JJ		 5209/* Undo hash table changes when an --as-needed input file is determined
5210 not to be needed. */
5211
5212static bfd_boolean
e5034e59
AM		 5213ppc64_elf_notice_as_needed (bfd *ibfd,
5214 struct bfd_link_info *info,
5215 enum notice_asneeded_action act)
97fed1c9 5216{
e5034e59
AM		 5217 if (act == notice_not_needed)
5218 {
5219 struct ppc_link_hash_table *htab = ppc_hash_table (info);
4dfe6ac6 5220
e5034e59
AM		 5221 if (htab == NULL)
5222 return FALSE;
4dfe6ac6 5223
e5034e59
AM		 5224 htab->dot_syms = NULL;
5225 }
5226 return _bfd_elf_notice_as_needed (ibfd, info, act);
97fed1c9
JJ		 5227}
5228
aa374f67
AM		 5229/* If --just-symbols against a final linked binary, then assume we need
5230 toc adjusting stubs when calling functions defined there. */
5231
5232static void
5233ppc64_elf_link_just_syms (asection *sec, struct bfd_link_info *info)
5234{
5235 if ((sec->flags & SEC_CODE) != 0
5236 && (sec->owner->flags & (EXEC_P | DYNAMIC)) != 0
5237 && is_ppc64_elf (sec->owner))
5238 {
2c3f079f
AM		 5239 if (abiversion (sec->owner) >= 2
5240 || bfd_get_section_by_name (sec->owner, ".opd") != NULL)
aa374f67
AM		 5241 sec->has_toc_reloc = 1;
5242 }
5243 _bfd_elf_link_just_syms (sec, info);
5244}
5245
e054468f 5246static struct plt_entry **
4ce794b7
AM		 5247update_local_sym_info (bfd *abfd, Elf_Internal_Shdr *symtab_hdr,
5248 unsigned long r_symndx, bfd_vma r_addend, int tls_type)
411e1bfb
AM		 5249{
5250 struct got_entry **local_got_ents = elf_local_got_ents (abfd);
e054468f 5251 struct plt_entry **local_plt;
f961d9dd 5252 unsigned char *local_got_tls_masks;
411e1bfb
AM		 5253
5254 if (local_got_ents == NULL)
5255 {
5256 bfd_size_type size = symtab_hdr->sh_info;
5257
e054468f
AM		 5258 size *= (sizeof (*local_got_ents)
5259 + sizeof (*local_plt)
5260 + sizeof (*local_got_tls_masks));
4ce794b7 5261 local_got_ents = bfd_zalloc (abfd, size);
411e1bfb 5262 if (local_got_ents == NULL)
e054468f 5263 return NULL;
411e1bfb
AM		 5264 elf_local_got_ents (abfd) = local_got_ents;
5265 }
5266
e054468f 5267 if ((tls_type & (PLT_IFUNC | TLS_EXPLICIT)) == 0)
411e1bfb
AM		 5268 {
5269 struct got_entry *ent;
5270
5271 for (ent = local_got_ents[r_symndx]; ent != NULL; ent = ent->next)
e717da7e
AM		 5272 if (ent->addend == r_addend
5273 && ent->owner == abfd
5274 && ent->tls_type == tls_type)
411e1bfb
AM		 5275 break;
5276 if (ent == NULL)
5277 {
5278 bfd_size_type amt = sizeof (*ent);
4ce794b7 5279 ent = bfd_alloc (abfd, amt);
411e1bfb
AM		 5280 if (ent == NULL)
5281 return FALSE;
5282 ent->next = local_got_ents[r_symndx];
5283 ent->addend = r_addend;
e717da7e 5284 ent->owner = abfd;
411e1bfb 5285 ent->tls_type = tls_type;
927be08e 5286 ent->is_indirect = FALSE;
411e1bfb
AM		 5287 ent->got.refcount = 0;
5288 local_got_ents[r_symndx] = ent;
5289 }
5290 ent->got.refcount += 1;
5291 }
5292
e054468f 5293 local_plt = (struct plt_entry **) (local_got_ents + symtab_hdr->sh_info);
f961d9dd 5294 local_got_tls_masks = (unsigned char *) (local_plt + symtab_hdr->sh_info);
e7b938ca 5295 local_got_tls_masks[r_symndx] |= tls_type;
e054468f
AM		 5296
5297 return local_plt + r_symndx;
65f38f15
AM		 5298}
5299
411e1bfb 5300static bfd_boolean
e054468f 5301update_plt_info (bfd *abfd, struct plt_entry **plist, bfd_vma addend)
1e2f5b6e 5302{
411e1bfb 5303 struct plt_entry *ent;
1e2f5b6e 5304
e054468f 5305 for (ent = *plist; ent != NULL; ent = ent->next)
411e1bfb
AM		 5306 if (ent->addend == addend)
5307 break;
5308 if (ent == NULL)
1e2f5b6e 5309 {
411e1bfb 5310 bfd_size_type amt = sizeof (*ent);
4ce794b7 5311 ent = bfd_alloc (abfd, amt);
411e1bfb
AM		 5312 if (ent == NULL)
5313 return FALSE;
e054468f 5314 ent->next = *plist;
411e1bfb
AM		 5315 ent->addend = addend;
5316 ent->plt.refcount = 0;
e054468f 5317 *plist = ent;
1e2f5b6e 5318 }
411e1bfb 5319 ent->plt.refcount += 1;
b34976b6 5320 return TRUE;
1e2f5b6e
AM		 5321}
5322
e054468f
AM		 5323static bfd_boolean
5324is_branch_reloc (enum elf_ppc64_reloc_type r_type)
5325{
5326 return (r_type == R_PPC64_REL24
5327 || r_type == R_PPC64_REL14
5328 || r_type == R_PPC64_REL14_BRTAKEN
5329 || r_type == R_PPC64_REL14_BRNTAKEN
5330 || r_type == R_PPC64_ADDR24
5331 || r_type == R_PPC64_ADDR14
5332 || r_type == R_PPC64_ADDR14_BRTAKEN
5333 || r_type == R_PPC64_ADDR14_BRNTAKEN);
5334}
5335
5bd4f169 5336/* Look through the relocs for a section during the first phase, and
65f38f15 5337 calculate needed space in the global offset table, procedure
5d1634d7 5338 linkage table, and dynamic reloc sections. */
5bd4f169 5339
b34976b6 5340static bfd_boolean
4ce794b7
AM		 5341ppc64_elf_check_relocs (bfd *abfd, struct bfd_link_info *info,
5342 asection *sec, const Elf_Internal_Rela *relocs)
5bd4f169 5343{
65f38f15 5344 struct ppc_link_hash_table *htab;
5bd4f169 5345 Elf_Internal_Shdr *symtab_hdr;
c7e2358a 5346 struct elf_link_hash_entry **sym_hashes;
5bd4f169
AM		 5347 const Elf_Internal_Rela *rel;
5348 const Elf_Internal_Rela *rel_end;
5bd4f169 5349 asection *sreloc;
1e2f5b6e 5350 asection **opd_sym_map;
3a71aa26 5351 struct elf_link_hash_entry *tga, *dottga;
5bd4f169 5352
0e1862bb 5353 if (bfd_link_relocatable (info))
b34976b6 5354 return TRUE;
5bd4f169 5355
680a3378
AM		 5356 /* Don't do anything special with non-loaded, non-alloced sections.
5357 In particular, any relocs in such sections should not affect GOT
5358 and PLT reference counting (ie. we don't allow them to create GOT
5359 or PLT entries), there's no possibility or desire to optimize TLS
5360 relocs, and there's not much point in propagating relocs to shared
5361 libs that the dynamic linker won't relocate. */
5362 if ((sec->flags & SEC_ALLOC) == 0)
5363 return TRUE;
5364
0c8d6e5c 5365 BFD_ASSERT (is_ppc64_elf (abfd));
0ffa91dd 5366
65f38f15 5367 htab = ppc_hash_table (info);
4dfe6ac6
NC		 5368 if (htab == NULL)
5369 return FALSE;
5370
3a71aa26
AM		 5371 tga = elf_link_hash_lookup (&htab->elf, "__tls_get_addr",
5372 FALSE, FALSE, TRUE);
5373 dottga = elf_link_hash_lookup (&htab->elf, ".__tls_get_addr",
5374 FALSE, FALSE, TRUE);
0ffa91dd 5375 symtab_hdr = &elf_symtab_hdr (abfd);
5bd4f169 5376 sym_hashes = elf_sym_hashes (abfd);
5bd4f169 5377 sreloc = NULL;
1e2f5b6e 5378 opd_sym_map = NULL;
f6c7c3e8
AM		 5379 if (ppc64_elf_section_data (sec) != NULL
5380 && ppc64_elf_section_data (sec)->sec_type == sec_opd)
5381 opd_sym_map = ppc64_elf_section_data (sec)->u.opd.func_sec;
5bd4f169
AM		 5382
5383 rel_end = relocs + sec->reloc_count;
5384 for (rel = relocs; rel < rel_end; rel++)
5385 {
5386 unsigned long r_symndx;
5387 struct elf_link_hash_entry *h;
04c9666a 5388 enum elf_ppc64_reloc_type r_type;
727fc41e 5389 int tls_type;
7c8fe5c4 5390 struct _ppc64_elf_section_data *ppc64_sec;
cbf95972 5391 struct plt_entry **ifunc, **plt_list;
5bd4f169
AM		 5392
5393 r_symndx = ELF64_R_SYM (rel->r_info);
5394 if (r_symndx < symtab_hdr->sh_info)
5395 h = NULL;
5396 else
973a3492
L		 5397 {
5398 h = sym_hashes[r_symndx - symtab_hdr->sh_info];
b31867b6 5399 h = elf_follow_link (h);
81fbe831
AM		 5400
5401 /* PR15323, ref flags aren't set for references in the same
5402 object. */
5403 h->root.non_ir_ref = 1;
1c865ab2
AM		 5404
5405 if (h == htab->elf.hgot)
5406 sec->has_toc_reloc = 1;
973a3492 5407 }
5bd4f169 5408
727fc41e 5409 tls_type = 0;
e054468f 5410 ifunc = NULL;
25f23106
AM		 5411 if (h != NULL)
5412 {
5413 if (h->type == STT_GNU_IFUNC)
5414 {
5415 h->needs_plt = 1;
5416 ifunc = &h->plt.plist;
5417 }
5418 }
5419 else
5420 {
5421 Elf_Internal_Sym *isym = bfd_sym_from_r_symndx (&htab->sym_cache,
5422 abfd, r_symndx);
5423 if (isym == NULL)
5424 return FALSE;
5425
5426 if (ELF_ST_TYPE (isym->st_info) == STT_GNU_IFUNC)
5427 {
5428 ifunc = update_local_sym_info (abfd, symtab_hdr, r_symndx,
5429 rel->r_addend, PLT_IFUNC);
5430 if (ifunc == NULL)
5431 return FALSE;
5432 }
5433 }
727fc41e 5434
cbf95972 5435 r_type = ELF64_R_TYPE (rel->r_info);
a33d1f77 5436 switch (r_type)
5bd4f169 5437 {
727fc41e
AM		 5438 case R_PPC64_TLSGD:
5439 case R_PPC64_TLSLD:
5440 /* These special tls relocs tie a call to __tls_get_addr with
5441 its parameter symbol. */
5442 break;
5443
411e1bfb
AM		 5444 case R_PPC64_GOT_TLSLD16:
5445 case R_PPC64_GOT_TLSLD16_LO:
5446 case R_PPC64_GOT_TLSLD16_HI:
5447 case R_PPC64_GOT_TLSLD16_HA:
951fd09b 5448 tls_type = TLS_TLS | TLS_LD;
411e1bfb
AM		 5449 goto dogottls;
5450
5451 case R_PPC64_GOT_TLSGD16:
5452 case R_PPC64_GOT_TLSGD16_LO:
5453 case R_PPC64_GOT_TLSGD16_HI:
5454 case R_PPC64_GOT_TLSGD16_HA:
951fd09b 5455 tls_type = TLS_TLS | TLS_GD;
411e1bfb
AM		 5456 goto dogottls;
5457
5458 case R_PPC64_GOT_TPREL16_DS:
5459 case R_PPC64_GOT_TPREL16_LO_DS:
5460 case R_PPC64_GOT_TPREL16_HI:
5461 case R_PPC64_GOT_TPREL16_HA:
0e1862bb 5462 if (bfd_link_pic (info))
411e1bfb
AM		 5463 info->flags |= DF_STATIC_TLS;
5464 tls_type = TLS_TLS | TLS_TPREL;
5465 goto dogottls;
5466
5467 case R_PPC64_GOT_DTPREL16_DS:
5468 case R_PPC64_GOT_DTPREL16_LO_DS:
5469 case R_PPC64_GOT_DTPREL16_HI:
5470 case R_PPC64_GOT_DTPREL16_HA:
5471 tls_type = TLS_TLS | TLS_DTPREL;
5472 dogottls:
5473 sec->has_tls_reloc = 1;
1a0670f3 5474 /* Fall through */
411e1bfb 5475
5bd4f169 5476 case R_PPC64_GOT16:
5bd4f169 5477 case R_PPC64_GOT16_DS:
65f38f15
AM		 5478 case R_PPC64_GOT16_HA:
5479 case R_PPC64_GOT16_HI:
5480 case R_PPC64_GOT16_LO:
5bd4f169 5481 case R_PPC64_GOT16_LO_DS:
65f38f15 5482 /* This symbol requires a global offset table entry. */
4c52953f 5483 sec->has_toc_reloc = 1;
33c0ec9d
AM		 5484 if (r_type == R_PPC64_GOT_TLSLD16
5485 || r_type == R_PPC64_GOT_TLSGD16
5486 || r_type == R_PPC64_GOT_TPREL16_DS
5487 || r_type == R_PPC64_GOT_DTPREL16_DS
5488 || r_type == R_PPC64_GOT16
5489 || r_type == R_PPC64_GOT16_DS)
5490 {
5491 htab->do_multi_toc = 1;
d77c8a4b 5492 ppc64_elf_tdata (abfd)->has_small_toc_reloc = 1;
33c0ec9d
AM		 5493 }
5494
e717da7e
AM		 5495 if (ppc64_elf_tdata (abfd)->got == NULL
5496 && !create_got_section (abfd, info))
b34976b6 5497 return FALSE;
5bd4f169
AM		 5498
5499 if (h != NULL)
5500 {
411e1bfb
AM		 5501 struct ppc_link_hash_entry *eh;
5502 struct got_entry *ent;
65f38f15 5503
411e1bfb
AM		 5504 eh = (struct ppc_link_hash_entry *) h;
5505 for (ent = eh->elf.got.glist; ent != NULL; ent = ent->next)
5506 if (ent->addend == rel->r_addend
e717da7e 5507 && ent->owner == abfd
411e1bfb
AM		 5508 && ent->tls_type == tls_type)
5509 break;
5510 if (ent == NULL)
5bd4f169 5511 {
411e1bfb 5512 bfd_size_type amt = sizeof (*ent);
4ce794b7 5513 ent = bfd_alloc (abfd, amt);
411e1bfb 5514 if (ent == NULL)
b34976b6 5515 return FALSE;
411e1bfb
AM		 5516 ent->next = eh->elf.got.glist;
5517 ent->addend = rel->r_addend;
e717da7e 5518 ent->owner = abfd;
411e1bfb 5519 ent->tls_type = tls_type;
927be08e 5520 ent->is_indirect = FALSE;
411e1bfb
AM		 5521 ent->got.refcount = 0;
5522 eh->elf.got.glist = ent;
5bd4f169 5523 }
411e1bfb 5524 ent->got.refcount += 1;
e7b938ca 5525 eh->tls_mask |= tls_type;
5bd4f169 5526 }
411e1bfb
AM		 5527 else
5528 /* This is a global offset table entry for a local symbol. */
5529 if (!update_local_sym_info (abfd, symtab_hdr, r_symndx,
5530 rel->r_addend, tls_type))
5531 return FALSE;
a345bc8d
AM		 5532
5533 /* We may also need a plt entry if the symbol turns out to be
5534 an ifunc. */
0e1862bb 5535 if (h != NULL && !bfd_link_pic (info) && abiversion (abfd) != 1)
a345bc8d
AM		 5536 {
5537 if (!update_plt_info (abfd, &h->plt.plist, rel->r_addend))
5538 return FALSE;
5539 }
5bd4f169
AM		 5540 break;
5541
5bd4f169 5542 case R_PPC64_PLT16_HA:
65f38f15
AM		 5543 case R_PPC64_PLT16_HI:
5544 case R_PPC64_PLT16_LO:
5545 case R_PPC64_PLT32:
5546 case R_PPC64_PLT64:
cbf95972
AM		 5547 /* This symbol requires a procedure linkage table entry. */
5548 plt_list = ifunc;
5549 if (h != NULL)
e054468f 5550 {
e054468f
AM		 5551 h->needs_plt = 1;
5552 if (h->root.root.string[0] == '.'
5553 && h->root.root.string[1] != '\0')
5554 ((struct ppc_link_hash_entry *) h)->is_func = 1;
cbf95972
AM		 5555 plt_list = &h->plt.plist;
5556 }
5557 if (plt_list == NULL)
5558 {
5559 /* It does not make sense to have a procedure linkage
5560 table entry for a non-ifunc local symbol. */
5561 info->callbacks->einfo
5562 (_("%P: %H: %s reloc against local symbol\n"),
5563 abfd, sec, rel->r_offset,
5564 ppc64_elf_howto_table[r_type]->name);
5565 bfd_set_error (bfd_error_bad_value);
5566 return FALSE;
e054468f 5567 }
cbf95972
AM		 5568 if (!update_plt_info (abfd, plt_list, rel->r_addend))
5569 return FALSE;
5bd4f169
AM		 5570 break;
5571
5572 /* The following relocations don't need to propagate the
5573 relocation if linking a shared object since they are
5574 section relative. */
5575 case R_PPC64_SECTOFF:
5576 case R_PPC64_SECTOFF_LO:
5577 case R_PPC64_SECTOFF_HI:
5578 case R_PPC64_SECTOFF_HA:
5579 case R_PPC64_SECTOFF_DS:
5580 case R_PPC64_SECTOFF_LO_DS:
411e1bfb
AM		 5581 case R_PPC64_DTPREL16:
5582 case R_PPC64_DTPREL16_LO:
5583 case R_PPC64_DTPREL16_HI:
5584 case R_PPC64_DTPREL16_HA:
5585 case R_PPC64_DTPREL16_DS:
5586 case R_PPC64_DTPREL16_LO_DS:
f9c6b907
AM		 5587 case R_PPC64_DTPREL16_HIGH:
5588 case R_PPC64_DTPREL16_HIGHA:
411e1bfb
AM		 5589 case R_PPC64_DTPREL16_HIGHER:
5590 case R_PPC64_DTPREL16_HIGHERA:
5591 case R_PPC64_DTPREL16_HIGHEST:
5592 case R_PPC64_DTPREL16_HIGHESTA:
5bd4f169
AM		 5593 break;
5594
ad8e1ba5 5595 /* Nor do these. */
25f23106
AM		 5596 case R_PPC64_REL16:
5597 case R_PPC64_REL16_LO:
5598 case R_PPC64_REL16_HI:
5599 case R_PPC64_REL16_HA:
a680de9a 5600 case R_PPC64_REL16DX_HA:
25f23106
AM		 5601 break;
5602
45965137
AM		 5603 /* Not supported as a dynamic relocation. */
5604 case R_PPC64_ADDR64_LOCAL:
0e1862bb 5605 if (bfd_link_pic (info))
45965137
AM		 5606 {
5607 if (!ppc64_elf_howto_table[R_PPC64_ADDR32])
5608 ppc_howto_init ();
5609 info->callbacks->einfo (_("%P: %H: %s reloc unsupported "
5610 "in shared libraries and PIEs.\n"),
5611 abfd, sec, rel->r_offset,
5612 ppc64_elf_howto_table[r_type]->name);
5613 bfd_set_error (bfd_error_bad_value);
5614 return FALSE;
5615 }
5616 break;
5617
ad8e1ba5 5618 case R_PPC64_TOC16:
33c0ec9d
AM		 5619 case R_PPC64_TOC16_DS:
5620 htab->do_multi_toc = 1;
d77c8a4b 5621 ppc64_elf_tdata (abfd)->has_small_toc_reloc = 1;
1a0670f3 5622 /* Fall through. */
ad8e1ba5
AM		 5623 case R_PPC64_TOC16_LO:
5624 case R_PPC64_TOC16_HI:
5625 case R_PPC64_TOC16_HA:
ad8e1ba5 5626 case R_PPC64_TOC16_LO_DS:
4c52953f 5627 sec->has_toc_reloc = 1;
ad8e1ba5
AM		 5628 break;
5629
006589cf
AM		 5630 /* Marker reloc. */
5631 case R_PPC64_ENTRY:
5632 break;
5633
5bd4f169
AM		 5634 /* This relocation describes the C++ object vtable hierarchy.
5635 Reconstruct it for later use during GC. */
5636 case R_PPC64_GNU_VTINHERIT:
c152c796 5637 if (!bfd_elf_gc_record_vtinherit (abfd, sec, h, rel->r_offset))
b34976b6 5638 return FALSE;
5bd4f169
AM		 5639 break;
5640
5641 /* This relocation describes which C++ vtable entries are actually
5642 used. Record for later use during GC. */
5643 case R_PPC64_GNU_VTENTRY:
d17e0c6e
JB		 5644 BFD_ASSERT (h != NULL);
5645 if (h != NULL
5646 && !bfd_elf_gc_record_vtentry (abfd, sec, h, rel->r_addend))
b34976b6 5647 return FALSE;
5bd4f169
AM		 5648 break;
5649
721956f4
AM		 5650 case R_PPC64_REL14:
5651 case R_PPC64_REL14_BRTAKEN:
5652 case R_PPC64_REL14_BRNTAKEN:
220c76dd
AM		 5653 {
5654 asection *dest = NULL;
5655
5656 /* Heuristic: If jumping outside our section, chances are
5657 we are going to need a stub. */
5658 if (h != NULL)
5659 {
5660 /* If the sym is weak it may be overridden later, so
5661 don't assume we know where a weak sym lives. */
5662 if (h->root.type == bfd_link_hash_defined)
5663 dest = h->root.u.def.section;
5664 }
5665 else
87d72d41
AM		 5666 {
5667 Elf_Internal_Sym *isym;
5668
5669 isym = bfd_sym_from_r_symndx (&htab->sym_cache,
5670 abfd, r_symndx);
5671 if (isym == NULL)
5672 return FALSE;
5673
5674 dest = bfd_section_from_elf_index (abfd, isym->st_shndx);
5675 }
5676
220c76dd 5677 if (dest != sec)
7c8fe5c4 5678 ppc64_elf_section_data (sec)->has_14bit_branch = 1;
220c76dd 5679 }
721956f4
AM		 5680 /* Fall through. */
5681
5d1634d7 5682 case R_PPC64_REL24:
cbf95972
AM		 5683 plt_list = ifunc;
5684 if (h != NULL)
5d1634d7 5685 {
e054468f
AM		 5686 h->needs_plt = 1;
5687 if (h->root.root.string[0] == '.'
5688 && h->root.root.string[1] != '\0')
5689 ((struct ppc_link_hash_entry *) h)->is_func = 1;
cbf95972 5690
3a71aa26 5691 if (h == tga || h == dottga)
cbf95972
AM		 5692 {
5693 sec->has_tls_reloc = 1;
5694 if (rel != relocs
5695 && (ELF64_R_TYPE (rel[-1].r_info) == R_PPC64_TLSGD
5696 || ELF64_R_TYPE (rel[-1].r_info) == R_PPC64_TLSLD))
5697 /* We have a new-style __tls_get_addr call with
5698 a marker reloc. */
5699 ;
5700 else
5701 /* Mark this section as having an old-style call. */
5702 sec->has_tls_get_addr_call = 1;
5703 }
5704 plt_list = &h->plt.plist;
411e1bfb 5705 }
cbf95972
AM		 5706
5707 /* We may need a .plt entry if the function this reloc
5708 refers to is in a shared lib. */
5709 if (plt_list
5710 && !update_plt_info (abfd, plt_list, rel->r_addend))
5711 return FALSE;
411e1bfb
AM		 5712 break;
5713
cbf95972
AM		 5714 case R_PPC64_ADDR14:
5715 case R_PPC64_ADDR14_BRNTAKEN:
5716 case R_PPC64_ADDR14_BRTAKEN:
5717 case R_PPC64_ADDR24:
5718 goto dodyn;
5719
411e1bfb
AM		 5720 case R_PPC64_TPREL64:
5721 tls_type = TLS_EXPLICIT | TLS_TLS | TLS_TPREL;
0e1862bb 5722 if (bfd_link_pic (info))
411e1bfb
AM		 5723 info->flags |= DF_STATIC_TLS;
5724 goto dotlstoc;
5725
5726 case R_PPC64_DTPMOD64:
5727 if (rel + 1 < rel_end
5728 && rel[1].r_info == ELF64_R_INFO (r_symndx, R_PPC64_DTPREL64)
5729 && rel[1].r_offset == rel->r_offset + 8)
951fd09b 5730 tls_type = TLS_EXPLICIT | TLS_TLS | TLS_GD;
411e1bfb 5731 else
951fd09b 5732 tls_type = TLS_EXPLICIT | TLS_TLS | TLS_LD;
411e1bfb
AM		 5733 goto dotlstoc;
5734
5735 case R_PPC64_DTPREL64:
5736 tls_type = TLS_EXPLICIT | TLS_TLS | TLS_DTPREL;
5737 if (rel != relocs
5738 && rel[-1].r_info == ELF64_R_INFO (r_symndx, R_PPC64_DTPMOD64)
5739 && rel[-1].r_offset == rel->r_offset - 8)
5740 /* This is the second reloc of a dtpmod, dtprel pair.
5741 Don't mark with TLS_DTPREL. */
5742 goto dodyn;
5743
5744 dotlstoc:
5745 sec->has_tls_reloc = 1;
5746 if (h != NULL)
5747 {
5748 struct ppc_link_hash_entry *eh;
5749 eh = (struct ppc_link_hash_entry *) h;
e7b938ca 5750 eh->tls_mask |= tls_type;
411e1bfb
AM		 5751 }
5752 else
5753 if (!update_local_sym_info (abfd, symtab_hdr, r_symndx,
5754 rel->r_addend, tls_type))
5755 return FALSE;
5756
7c8fe5c4
AM		 5757 ppc64_sec = ppc64_elf_section_data (sec);
5758 if (ppc64_sec->sec_type != sec_toc)
411e1bfb 5759 {
3a71aa26
AM		 5760 bfd_size_type amt;
5761
e7b938ca 5762 /* One extra to simplify get_tls_mask. */
3a71aa26
AM		 5763 amt = sec->size * sizeof (unsigned) / 8 + sizeof (unsigned);
5764 ppc64_sec->u.toc.symndx = bfd_zalloc (abfd, amt);
5765 if (ppc64_sec->u.toc.symndx == NULL)
5766 return FALSE;
5767 amt = sec->size * sizeof (bfd_vma) / 8;
5768 ppc64_sec->u.toc.add = bfd_zalloc (abfd, amt);
5769 if (ppc64_sec->u.toc.add == NULL)
411e1bfb 5770 return FALSE;
7c8fe5c4
AM		 5771 BFD_ASSERT (ppc64_sec->sec_type == sec_normal);
5772 ppc64_sec->sec_type = sec_toc;
411e1bfb
AM		 5773 }
5774 BFD_ASSERT (rel->r_offset % 8 == 0);
3a71aa26
AM		 5775 ppc64_sec->u.toc.symndx[rel->r_offset / 8] = r_symndx;
5776 ppc64_sec->u.toc.add[rel->r_offset / 8] = rel->r_addend;
951fd09b
AM		 5777
5778 /* Mark the second slot of a GD or LD entry.
5779 -1 to indicate GD and -2 to indicate LD. */
5780 if (tls_type == (TLS_EXPLICIT | TLS_TLS | TLS_GD))
3a71aa26 5781 ppc64_sec->u.toc.symndx[rel->r_offset / 8 + 1] = -1;
951fd09b 5782 else if (tls_type == (TLS_EXPLICIT | TLS_TLS | TLS_LD))
3a71aa26 5783 ppc64_sec->u.toc.symndx[rel->r_offset / 8 + 1] = -2;
411e1bfb
AM		 5784 goto dodyn;
5785
5786 case R_PPC64_TPREL16:
5787 case R_PPC64_TPREL16_LO:
5788 case R_PPC64_TPREL16_HI:
5789 case R_PPC64_TPREL16_HA:
5790 case R_PPC64_TPREL16_DS:
5791 case R_PPC64_TPREL16_LO_DS:
f9c6b907
AM		 5792 case R_PPC64_TPREL16_HIGH:
5793 case R_PPC64_TPREL16_HIGHA:
411e1bfb
AM		 5794 case R_PPC64_TPREL16_HIGHER:
5795 case R_PPC64_TPREL16_HIGHERA:
5796 case R_PPC64_TPREL16_HIGHEST:
5797 case R_PPC64_TPREL16_HIGHESTA:
0e1862bb 5798 if (bfd_link_pic (info))
411e1bfb 5799 {
afb93314 5800 info->flags |= DF_STATIC_TLS;
411e1bfb 5801 goto dodyn;
5d1634d7
AM		 5802 }
5803 break;
5804
e86ce104 5805 case R_PPC64_ADDR64:
1e2f5b6e 5806 if (opd_sym_map != NULL
1e2f5b6e 5807 && rel + 1 < rel_end
4ce794b7 5808 && ELF64_R_TYPE ((rel + 1)->r_info) == R_PPC64_TOC)
1e2f5b6e 5809 {
8387904d
AM		 5810 if (h != NULL)
5811 {
5812 if (h->root.root.string[0] == '.'
5813 && h->root.root.string[1] != 0
b31867b6 5814 && lookup_fdh ((struct ppc_link_hash_entry *) h, htab))
8387904d
AM		 5815 ;
5816 else
5817 ((struct ppc_link_hash_entry *) h)->is_func = 1;
5818 }
5819 else
5820 {
5821 asection *s;
87d72d41 5822 Elf_Internal_Sym *isym;
1e2f5b6e 5823
87d72d41
AM		 5824 isym = bfd_sym_from_r_symndx (&htab->sym_cache,
5825 abfd, r_symndx);
5826 if (isym == NULL)
8387904d 5827 return FALSE;
87d72d41
AM		 5828
5829 s = bfd_section_from_elf_index (abfd, isym->st_shndx);
5830 if (s != NULL && s != sec)
51aecdc5 5831 opd_sym_map[OPD_NDX (rel->r_offset)] = s;
8387904d 5832 }
1e2f5b6e 5833 }
e86ce104
AM		 5834 /* Fall through. */
5835
65f38f15
AM		 5836 case R_PPC64_ADDR16:
5837 case R_PPC64_ADDR16_DS:
5838 case R_PPC64_ADDR16_HA:
5839 case R_PPC64_ADDR16_HI:
f9c6b907
AM		 5840 case R_PPC64_ADDR16_HIGH:
5841 case R_PPC64_ADDR16_HIGHA:
65f38f15
AM		 5842 case R_PPC64_ADDR16_HIGHER:
5843 case R_PPC64_ADDR16_HIGHERA:
5844 case R_PPC64_ADDR16_HIGHEST:
5845 case R_PPC64_ADDR16_HIGHESTA:
5846 case R_PPC64_ADDR16_LO:
5847 case R_PPC64_ADDR16_LO_DS:
0e1862bb 5848 if (h != NULL && !bfd_link_pic (info) && abiversion (abfd) != 1
a345bc8d
AM		 5849 && rel->r_addend == 0)
5850 {
5851 /* We may need a .plt entry if this reloc refers to a
5852 function in a shared lib. */
5853 if (!update_plt_info (abfd, &h->plt.plist, rel->r_addend))
5854 return FALSE;
5855 h->pointer_equality_needed = 1;
5856 }
5857 /* Fall through. */
5858
5859 case R_PPC64_REL30:
5860 case R_PPC64_REL32:
5861 case R_PPC64_REL64:
65f38f15 5862 case R_PPC64_ADDR32:
65f38f15
AM		 5863 case R_PPC64_UADDR16:
5864 case R_PPC64_UADDR32:
5865 case R_PPC64_UADDR64:
5bd4f169 5866 case R_PPC64_TOC:
0e1862bb 5867 if (h != NULL && !bfd_link_pic (info))
81848ca0 5868 /* We may need a copy reloc. */
f5385ebf 5869 h->non_got_ref = 1;
81848ca0 5870
41bd81ab 5871 /* Don't propagate .opd relocs. */
1e2f5b6e 5872 if (NO_OPD_RELOCS && opd_sym_map != NULL)
e86ce104 5873 break;
e86ce104 5874
65f38f15
AM		 5875 /* If we are creating a shared library, and this is a reloc
5876 against a global symbol, or a non PC relative reloc
5877 against a local symbol, then we need to copy the reloc
5878 into the shared library. However, if we are linking with
5879 -Bsymbolic, we do not need to copy a reloc against a
5880 global symbol which is defined in an object we are
5881 including in the link (i.e., DEF_REGULAR is set). At
5882 this point we have not seen all the input files, so it is
5883 possible that DEF_REGULAR is not set now but will be set
5884 later (it is never cleared). In case of a weak definition,
5885 DEF_REGULAR may be cleared later by a strong definition in
5886 a shared library. We account for that possibility below by
f4656909 5887 storing information in the dyn_relocs field of the hash
65f38f15
AM		 5888 table entry. A similar situation occurs when creating
5889 shared libraries and symbol visibility changes render the
5890 symbol local.
5891
5892 If on the other hand, we are creating an executable, we
5893 may need to keep relocations for symbols satisfied by a
5894 dynamic library if we manage to avoid copy relocs for the
5895 symbol. */
411e1bfb 5896 dodyn:
0e1862bb 5897 if ((bfd_link_pic (info)
1d483afe 5898 && (must_be_dyn_reloc (info, r_type)
65f38f15 5899 || (h != NULL
198f1157 5900 && (!SYMBOLIC_BIND (info, h)
65f38f15 5901 || h->root.type == bfd_link_hash_defweak
f5385ebf 5902 || !h->def_regular))))
f4656909 5903 || (ELIMINATE_COPY_RELOCS
0e1862bb 5904 && !bfd_link_pic (info)
65f38f15
AM		 5905 && h != NULL
5906 && (h->root.type == bfd_link_hash_defweak
25f23106 5907 || !h->def_regular))
0e1862bb 5908 || (!bfd_link_pic (info)
25f23106 5909 && ifunc != NULL))
5bd4f169 5910 {
65f38f15
AM		 5911 /* We must copy these reloc types into the output file.
5912 Create a reloc section in dynobj and make room for
5913 this reloc. */
5bd4f169
AM		 5914 if (sreloc == NULL)
5915 {
83bac4b0
NC		 5916 sreloc = _bfd_elf_make_dynamic_reloc_section
5917 (sec, htab->elf.dynobj, 3, abfd, /*rela?*/ TRUE);
65f38f15 5918
5bd4f169 5919 if (sreloc == NULL)
83bac4b0 5920 return FALSE;
5bd4f169
AM		 5921 }
5922
65f38f15
AM		 5923 /* If this is a global symbol, we count the number of
5924 relocations we need for this symbol. */
5925 if (h != NULL)
5926 {
19e08130
AM		 5927 struct elf_dyn_relocs *p;
5928 struct elf_dyn_relocs **head;
5929
ec338859 5930 head = &((struct ppc_link_hash_entry *) h)->dyn_relocs;
19e08130
AM		 5931 p = *head;
5932 if (p == NULL || p->sec != sec)
5933 {
5934 p = bfd_alloc (htab->elf.dynobj, sizeof *p);
5935 if (p == NULL)
5936 return FALSE;
5937 p->next = *head;
5938 *head = p;
5939 p->sec = sec;
5940 p->count = 0;
5941 p->pc_count = 0;
5942 }
5943 p->count += 1;
5944 if (!must_be_dyn_reloc (info, r_type))
5945 p->pc_count += 1;
65f38f15
AM		 5946 }
5947 else
5948 {
ec338859
AM		 5949 /* Track dynamic relocs needed for local syms too.
5950 We really need local syms available to do this
5951 easily. Oh well. */
19e08130
AM		 5952 struct ppc_dyn_relocs *p;
5953 struct ppc_dyn_relocs **head;
5954 bfd_boolean is_ifunc;
ec338859 5955 asection *s;
6edfbbad 5956 void *vpp;
87d72d41 5957 Elf_Internal_Sym *isym;
6edfbbad 5958
87d72d41
AM		 5959 isym = bfd_sym_from_r_symndx (&htab->sym_cache,
5960 abfd, r_symndx);
5961 if (isym == NULL)
b34976b6 5962 return FALSE;
ec338859 5963
87d72d41
AM		 5964 s = bfd_section_from_elf_index (abfd, isym->st_shndx);
5965 if (s == NULL)
5966 s = sec;
5967
6edfbbad 5968 vpp = &elf_section_data (s)->local_dynrel;
19e08130
AM		 5969 head = (struct ppc_dyn_relocs **) vpp;
5970 is_ifunc = ELF_ST_TYPE (isym->st_info) == STT_GNU_IFUNC;
5971 p = *head;
5972 if (p != NULL && p->sec == sec && p->ifunc != is_ifunc)
5973 p = p->next;
5974 if (p == NULL || p->sec != sec || p->ifunc != is_ifunc)
5975 {
5976 p = bfd_alloc (htab->elf.dynobj, sizeof *p);
5977 if (p == NULL)
5978 return FALSE;
5979 p->next = *head;
5980 *head = p;
5981 p->sec = sec;
5982 p->ifunc = is_ifunc;
5983 p->count = 0;
5984 }
5985 p->count += 1;
ec338859 5986 }
65f38f15 5987 }
5bd4f169 5988 break;
65f38f15
AM		 5989
5990 default:
96e0dda4 5991 break;
5bd4f169
AM		 5992 }
5993 }
5994
b34976b6 5995 return TRUE;
5bd4f169
AM		 5996}
5997
ee67d69a
AM		 5998/* Merge backend specific data from an object file to the output
5999 object file when linking. */
6000
6001static bfd_boolean
50e03d47 6002ppc64_elf_merge_private_bfd_data (bfd *ibfd, struct bfd_link_info *info)
ee67d69a 6003{
50e03d47 6004 bfd *obfd = info->output_bfd;
ee67d69a
AM		 6005 unsigned long iflags, oflags;
6006
6007 if ((ibfd->flags & BFD_LINKER_CREATED) != 0)
6008 return TRUE;
6009
6010 if (!is_ppc64_elf (ibfd) || !is_ppc64_elf (obfd))
6011 return TRUE;
6012
50e03d47 6013 if (!_bfd_generic_verify_endian_match (ibfd, info))
ee67d69a
AM		 6014 return FALSE;
6015
6016 iflags = elf_elfheader (ibfd)->e_flags;
6017 oflags = elf_elfheader (obfd)->e_flags;
6018
f6c7c3e8 6019 if (iflags & ~EF_PPC64_ABI)
ee67d69a 6020 {
4eca0228 6021 _bfd_error_handler
ee67d69a
AM		 6022 (_("%B uses unknown e_flags 0x%lx"), ibfd, iflags);
6023 bfd_set_error (bfd_error_bad_value);
6024 return FALSE;
6025 }
f6c7c3e8 6026 else if (iflags != oflags && iflags != 0)
ee67d69a 6027 {
4eca0228 6028 _bfd_error_handler
ee67d69a
AM		 6029 (_("%B: ABI version %ld is not compatible with ABI version %ld output"),
6030 ibfd, iflags, oflags);
6031 bfd_set_error (bfd_error_bad_value);
6032 return FALSE;
6033 }
6034
50e03d47 6035 _bfd_elf_ppc_merge_fp_attributes (ibfd, info);
005d79fd 6036
ee67d69a 6037 /* Merge Tag_compatibility attributes and any common GNU ones. */
50e03d47 6038 _bfd_elf_merge_object_attributes (ibfd, info);
ee67d69a
AM		 6039
6040 return TRUE;
6041}
6042
6043static bfd_boolean
6044ppc64_elf_print_private_bfd_data (bfd *abfd, void *ptr)
6045{
6046 /* Print normal ELF private data. */
6047 _bfd_elf_print_private_bfd_data (abfd, ptr);
6048
6049 if (elf_elfheader (abfd)->e_flags != 0)
6050 {
6051 FILE *file = ptr;
6052
6053 /* xgettext:c-format */
6054 fprintf (file, _("private flags = 0x%lx:"),
6055 elf_elfheader (abfd)->e_flags);
6056
6057 if ((elf_elfheader (abfd)->e_flags & EF_PPC64_ABI) != 0)
6058 fprintf (file, _(" [abiv%ld]"),
6059 elf_elfheader (abfd)->e_flags & EF_PPC64_ABI);
6060 fputc ('\n', file);
6061 }
6062
6063 return TRUE;
6064}
6065
8387904d 6066/* OFFSET in OPD_SEC specifies a function descriptor. Return the address
b53dfeb2
AM		 6067 of the code entry point, and its section, which must be in the same
6068 object as OPD_SEC. Returns (bfd_vma) -1 on error. */
8387904d
AM		 6069
6070static bfd_vma
6071opd_entry_value (asection *opd_sec,
6072 bfd_vma offset,
6073 asection **code_sec,
aef36ac1
AM		 6074 bfd_vma *code_off,
6075 bfd_boolean in_code_sec)
8387904d
AM		 6076{
6077 bfd *opd_bfd = opd_sec->owner;
8860955f 6078 Elf_Internal_Rela *relocs;
8387904d 6079 Elf_Internal_Rela *lo, *hi, *look;
645ea6a9 6080 bfd_vma val;
8387904d 6081
9f296da3
AM		 6082 /* No relocs implies we are linking a --just-symbols object, or looking
6083 at a final linked executable with addr2line or somesuch. */
4b85d634
AM		 6084 if (opd_sec->reloc_count == 0)
6085 {
729eabd5 6086 bfd_byte *contents = ppc64_elf_tdata (opd_bfd)->opd.contents;
3b36f7e6 6087
729eabd5
AM		 6088 if (contents == NULL)
6089 {
6090 if (!bfd_malloc_and_get_section (opd_bfd, opd_sec, &contents))
6091 return (bfd_vma) -1;
6092 ppc64_elf_tdata (opd_bfd)->opd.contents = contents;
6093 }
ee1e4ede 6094
dbb3fbbb 6095 /* PR 17512: file: 64b9dfbb. */
451dfd38 6096 if (offset + 7 >= opd_sec->size || offset + 7 < offset)
dbb3fbbb
NC		 6097 return (bfd_vma) -1;
6098
729eabd5 6099 val = bfd_get_64 (opd_bfd, contents + offset);
aef36ac1
AM		 6100 if (code_sec != NULL)
6101 {
6102 asection *sec, *likely = NULL;
ee1e4ede 6103
aef36ac1 6104 if (in_code_sec)
4b85d634 6105 {
aef36ac1
AM		 6106 sec = *code_sec;
6107 if (sec->vma <= val
6108 && val < sec->vma + sec->size)
6109 likely = sec;
6110 else
6111 val = -1;
6112 }
6113 else
6114 for (sec = opd_bfd->sections; sec != NULL; sec = sec->next)
6115 if (sec->vma <= val
6116 && (sec->flags & SEC_LOAD) != 0
6117 && (sec->flags & SEC_ALLOC) != 0)
6118 likely = sec;
6119 if (likely != NULL)
6120 {
6121 *code_sec = likely;
6122 if (code_off != NULL)
6123 *code_off = val - likely->vma;
4b85d634
AM		 6124 }
6125 }
aef36ac1 6126 return val;
4b85d634
AM		 6127 }
6128
0c8d6e5c 6129 BFD_ASSERT (is_ppc64_elf (opd_bfd));
0ffa91dd 6130
729eabd5 6131 relocs = ppc64_elf_tdata (opd_bfd)->opd.relocs;
8860955f
AM		 6132 if (relocs == NULL)
6133 relocs = _bfd_elf_link_read_relocs (opd_bfd, opd_sec, NULL, NULL, TRUE);
877a8638
NC		 6134 /* PR 17512: file: df8e1fd6. */
6135 if (relocs == NULL)
6136 return (bfd_vma) -1;
645ea6a9 6137
8387904d 6138 /* Go find the opd reloc at the sym address. */
8860955f 6139 lo = relocs;
8387904d 6140 hi = lo + opd_sec->reloc_count - 1; /* ignore last reloc */
645ea6a9 6141 val = (bfd_vma) -1;
8387904d
AM		 6142 while (lo < hi)
6143 {
6144 look = lo + (hi - lo) / 2;
6145 if (look->r_offset < offset)
6146 lo = look + 1;
6147 else if (look->r_offset > offset)
6148 hi = look;
6149 else
6150 {
0ffa91dd
NC		 6151 Elf_Internal_Shdr *symtab_hdr = &elf_symtab_hdr (opd_bfd);
6152
8387904d
AM		 6153 if (ELF64_R_TYPE (look->r_info) == R_PPC64_ADDR64
6154 && ELF64_R_TYPE ((look + 1)->r_info) == R_PPC64_TOC)
6155 {
6156 unsigned long symndx = ELF64_R_SYM (look->r_info);
b53dfeb2 6157 asection *sec = NULL;
8387904d 6158
b53dfeb2
AM		 6159 if (symndx >= symtab_hdr->sh_info
6160 && elf_sym_hashes (opd_bfd) != NULL)
8387904d
AM		 6161 {
6162 struct elf_link_hash_entry **sym_hashes;
6163 struct elf_link_hash_entry *rh;
6164
6165 sym_hashes = elf_sym_hashes (opd_bfd);
6166 rh = sym_hashes[symndx - symtab_hdr->sh_info];
128205bb
AM		 6167 if (rh != NULL)
6168 {
6169 rh = elf_follow_link (rh);
bb854a36
AM		 6170 if (rh->root.type != bfd_link_hash_defined
6171 && rh->root.type != bfd_link_hash_defweak)
6172 break;
6173 if (rh->root.u.def.section->owner == opd_bfd)
b53dfeb2 6174 {
bb854a36
AM		 6175 val = rh->root.u.def.value;
6176 sec = rh->root.u.def.section;
b53dfeb2
AM		 6177 }
6178 }
6179 }
6180
6181 if (sec == NULL)
6182 {
6183 Elf_Internal_Sym *sym;
6184
6185 if (symndx < symtab_hdr->sh_info)
6186 {
6187 sym = (Elf_Internal_Sym *) symtab_hdr->contents;
6188 if (sym == NULL)
6189 {
6190 size_t symcnt = symtab_hdr->sh_info;
6191 sym = bfd_elf_get_elf_syms (opd_bfd, symtab_hdr,
6192 symcnt, 0,
6193 NULL, NULL, NULL);
6194 if (sym == NULL)
6195 break;
6196 symtab_hdr->contents = (bfd_byte *) sym;
6197 }
6198 sym += symndx;
128205bb
AM		 6199 }
6200 else
6201 {
b53dfeb2
AM		 6202 sym = bfd_elf_get_elf_syms (opd_bfd, symtab_hdr,
6203 1, symndx,
6204 NULL, NULL, NULL);
128205bb
AM		 6205 if (sym == NULL)
6206 break;
128205bb 6207 }
b53dfeb2
AM		 6208 sec = bfd_section_from_elf_index (opd_bfd, sym->st_shndx);
6209 if (sec == NULL)
6210 break;
6211 BFD_ASSERT ((sec->flags & SEC_MERGE) == 0);
6212 val = sym->st_value;
8387904d 6213 }
b53dfeb2 6214
8387904d
AM		 6215 val += look->r_addend;
6216 if (code_off != NULL)
6217 *code_off = val;
6218 if (code_sec != NULL)
aef36ac1
AM		 6219 {
6220 if (in_code_sec && *code_sec != sec)
6221 return -1;
6222 else
6223 *code_sec = sec;
6224 }
b53dfeb2 6225 if (sec->output_section != NULL)
8387904d 6226 val += sec->output_section->vma + sec->output_offset;
8387904d
AM		 6227 }
6228 break;
6229 }
6230 }
645ea6a9 6231
645ea6a9 6232 return val;
8387904d
AM		 6233}
6234
aef36ac1
AM		 6235/* If the ELF symbol SYM might be a function in SEC, return the
6236 function size and set *CODE_OFF to the function's entry point,
6237 otherwise return zero. */
9f296da3 6238
aef36ac1
AM		 6239static bfd_size_type
6240ppc64_elf_maybe_function_sym (const asymbol *sym, asection *sec,
6241 bfd_vma *code_off)
9f296da3 6242{
aef36ac1
AM		 6243 bfd_size_type size;
6244
6245 if ((sym->flags & (BSF_SECTION_SYM | BSF_FILE | BSF_OBJECT
6246 | BSF_THREAD_LOCAL | BSF_RELC | BSF_SRELC)) != 0)
6247 return 0;
6248
6249 size = 0;
6250 if (!(sym->flags & BSF_SYNTHETIC))
6251 size = ((elf_symbol_type *) sym)->internal_elf_sym.st_size;
6252
6253 if (strcmp (sym->section->name, ".opd") == 0)
9f296da3 6254 {
b07bca4e
AM		 6255 struct _opd_sec_data *opd = get_opd_info (sym->section);
6256 bfd_vma symval = sym->value;
6257
6258 if (opd != NULL
6259 && opd->adjust != NULL
6260 && elf_section_data (sym->section)->relocs != NULL)
6261 {
6262 /* opd_entry_value will use cached relocs that have been
6263 adjusted, but with raw symbols. That means both local
6264 and global symbols need adjusting. */
6265 long adjust = opd->adjust[OPD_NDX (symval)];
6266 if (adjust == -1)
6267 return 0;
6268 symval += adjust;
6269 }
6270
6271 if (opd_entry_value (sym->section, symval,
aef36ac1
AM		 6272 &sec, code_off, TRUE) == (bfd_vma) -1)
6273 return 0;
6274 /* An old ABI binary with dot-syms has a size of 24 on the .opd
6275 symbol. This size has nothing to do with the code size of the
6276 function, which is what we're supposed to return, but the
6277 code size isn't available without looking up the dot-sym.
6278 However, doing that would be a waste of time particularly
6279 since elf_find_function will look at the dot-sym anyway.
6280 Now, elf_find_function will keep the largest size of any
6281 function sym found at the code address of interest, so return
6282 1 here to avoid it incorrectly caching a larger function size
6283 for a small function. This does mean we return the wrong
6284 size for a new-ABI function of size 24, but all that does is
6285 disable caching for such functions. */
6286 if (size == 24)
6287 size = 1;
9f296da3 6288 }
aef36ac1
AM		 6289 else
6290 {
6291 if (sym->section != sec)
6292 return 0;
6293 *code_off = sym->value;
6294 }
6295 if (size == 0)
6296 size = 1;
6297 return size;
9f296da3
AM		 6298}
6299
854b41e7
AM		 6300/* Return true if symbol is defined in a regular object file. */
6301
6302static bfd_boolean
6303is_static_defined (struct elf_link_hash_entry *h)
6304{
6305 return ((h->root.type == bfd_link_hash_defined
6306 || h->root.type == bfd_link_hash_defweak)
6307 && h->root.u.def.section != NULL
6308 && h->root.u.def.section->output_section != NULL);
6309}
6310
b31867b6
AM		 6311/* If FDH is a function descriptor symbol, return the associated code
6312 entry symbol if it is defined. Return NULL otherwise. */
6313
6314static struct ppc_link_hash_entry *
6315defined_code_entry (struct ppc_link_hash_entry *fdh)
6316{
6317 if (fdh->is_func_descriptor)
6318 {
6319 struct ppc_link_hash_entry *fh = ppc_follow_link (fdh->oh);
6320 if (fh->elf.root.type == bfd_link_hash_defined
6321 || fh->elf.root.type == bfd_link_hash_defweak)
6322 return fh;
6323 }
6324 return NULL;
6325}
6326
6327/* If FH is a function code entry symbol, return the associated
6328 function descriptor symbol if it is defined. Return NULL otherwise. */
6329
6330static struct ppc_link_hash_entry *
6331defined_func_desc (struct ppc_link_hash_entry *fh)
6332{
6333 if (fh->oh != NULL
6334 && fh->oh->is_func_descriptor)
6335 {
6336 struct ppc_link_hash_entry *fdh = ppc_follow_link (fh->oh);
6337 if (fdh->elf.root.type == bfd_link_hash_defined
6338 || fdh->elf.root.type == bfd_link_hash_defweak)
6339 return fdh;
6340 }
6341 return NULL;
6342}
6343
74f0fb50
AM		 6344/* Mark all our entry sym sections, both opd and code section. */
6345
6346static void
6347ppc64_elf_gc_keep (struct bfd_link_info *info)
6348{
6349 struct ppc_link_hash_table *htab = ppc_hash_table (info);
6350 struct bfd_sym_chain *sym;
6351
4dfe6ac6
NC		 6352 if (htab == NULL)
6353 return;
6354
74f0fb50
AM		 6355 for (sym = info->gc_sym_list; sym != NULL; sym = sym->next)
6356 {
b31867b6 6357 struct ppc_link_hash_entry *eh, *fh;
74f0fb50
AM		 6358 asection *sec;
6359
6360 eh = (struct ppc_link_hash_entry *)
b31867b6 6361 elf_link_hash_lookup (&htab->elf, sym->name, FALSE, FALSE, TRUE);
74f0fb50
AM		 6362 if (eh == NULL)
6363 continue;
6364 if (eh->elf.root.type != bfd_link_hash_defined
6365 && eh->elf.root.type != bfd_link_hash_defweak)
6366 continue;
6367
b31867b6
AM		 6368 fh = defined_code_entry (eh);
6369 if (fh != NULL)
74f0fb50 6370 {
b31867b6 6371 sec = fh->elf.root.u.def.section;
74f0fb50
AM		 6372 sec->flags |= SEC_KEEP;
6373 }
6374 else if (get_opd_info (eh->elf.root.u.def.section) != NULL
6375 && opd_entry_value (eh->elf.root.u.def.section,
6376 eh->elf.root.u.def.value,
aef36ac1 6377 &sec, NULL, FALSE) != (bfd_vma) -1)
74f0fb50
AM		 6378 sec->flags |= SEC_KEEP;
6379
6380 sec = eh->elf.root.u.def.section;
6381 sec->flags |= SEC_KEEP;
6382 }
6383}
6384
64d03ab5
AM		 6385/* Mark sections containing dynamically referenced symbols. When
6386 building shared libraries, we must assume that any visible symbol is
6387 referenced. */
6388
6389static bfd_boolean
6390ppc64_elf_gc_mark_dynamic_ref (struct elf_link_hash_entry *h, void *inf)
6391{
6392 struct bfd_link_info *info = (struct bfd_link_info *) inf;
6393 struct ppc_link_hash_entry *eh = (struct ppc_link_hash_entry *) h;
b31867b6 6394 struct ppc_link_hash_entry *fdh;
b407645f 6395 struct bfd_elf_dynamic_list *d = info->dynamic_list;
64d03ab5 6396
64d03ab5 6397 /* Dynamic linking info is on the func descriptor sym. */
b31867b6
AM		 6398 fdh = defined_func_desc (eh);
6399 if (fdh != NULL)
6400 eh = fdh;
64d03ab5
AM		 6401
6402 if ((eh->elf.root.type == bfd_link_hash_defined
6403 || eh->elf.root.type == bfd_link_hash_defweak)
6404 && (eh->elf.ref_dynamic
1c9177d9 6405 || ((eh->elf.def_regular || ELF_COMMON_DEF_P (&eh->elf))
64d03ab5 6406 && ELF_ST_VISIBILITY (eh->elf.other) != STV_INTERNAL
4c58e0d8 6407 && ELF_ST_VISIBILITY (eh->elf.other) != STV_HIDDEN
0e1862bb 6408 && (!bfd_link_executable (info)
b407645f
AM		 6409 || info->export_dynamic
6410 || (eh->elf.dynamic
6411 && d != NULL
6412 && (*d->match) (&d->head, NULL, eh->elf.root.root.string)))
4c58e0d8
AM		 6413 && (strchr (eh->elf.root.root.string, ELF_VER_CHR) != NULL
6414 || !bfd_hide_sym_by_version (info->version_info,
6415 eh->elf.root.root.string)))))
64d03ab5
AM		 6416 {
6417 asection *code_sec;
b31867b6 6418 struct ppc_link_hash_entry *fh;
64d03ab5
AM		 6419
6420 eh->elf.root.u.def.section->flags |= SEC_KEEP;
6421
6422 /* Function descriptor syms cause the associated
6423 function code sym section to be marked. */
b31867b6
AM		 6424 fh = defined_code_entry (eh);
6425 if (fh != NULL)
6426 {
6427 code_sec = fh->elf.root.u.def.section;
6428 code_sec->flags |= SEC_KEEP;
6429 }
64d03ab5
AM		 6430 else if (get_opd_info (eh->elf.root.u.def.section) != NULL
6431 && opd_entry_value (eh->elf.root.u.def.section,
6432 eh->elf.root.u.def.value,
aef36ac1 6433 &code_sec, NULL, FALSE) != (bfd_vma) -1)
64d03ab5
AM		 6434 code_sec->flags |= SEC_KEEP;
6435 }
6436
6437 return TRUE;
6438}
6439
5bd4f169
AM		 6440/* Return the section that should be marked against GC for a given
6441 relocation. */
6442
6443static asection *
4ce794b7 6444ppc64_elf_gc_mark_hook (asection *sec,
fb34365b 6445 struct bfd_link_info *info,
4ce794b7
AM		 6446 Elf_Internal_Rela *rel,
6447 struct elf_link_hash_entry *h,
6448 Elf_Internal_Sym *sym)
5bd4f169 6449{
ccfa59ea
AM		 6450 asection *rsec;
6451
ccfa59ea
AM		 6452 /* Syms return NULL if we're marking .opd, so we avoid marking all
6453 function sections, as all functions are referenced in .opd. */
6454 rsec = NULL;
6455 if (get_opd_info (sec) != NULL)
6456 return rsec;
1e2f5b6e 6457
5bd4f169
AM		 6458 if (h != NULL)
6459 {
04c9666a 6460 enum elf_ppc64_reloc_type r_type;
b31867b6 6461 struct ppc_link_hash_entry *eh, *fh, *fdh;
a33d1f77 6462
4ce794b7 6463 r_type = ELF64_R_TYPE (rel->r_info);
a33d1f77 6464 switch (r_type)
5bd4f169
AM		 6465 {
6466 case R_PPC64_GNU_VTINHERIT:
6467 case R_PPC64_GNU_VTENTRY:
6468 break;
6469
6470 default:
6471 switch (h->root.type)
6472 {
6473 case bfd_link_hash_defined:
6474 case bfd_link_hash_defweak:
ccfa59ea 6475 eh = (struct ppc_link_hash_entry *) h;
b31867b6
AM		 6476 fdh = defined_func_desc (eh);
6477 if (fdh != NULL)
6478 eh = fdh;
1e2f5b6e
AM		 6479
6480 /* Function descriptor syms cause the associated
6481 function code sym section to be marked. */
b31867b6
AM		 6482 fh = defined_code_entry (eh);
6483 if (fh != NULL)
ccfa59ea
AM		 6484 {
6485 /* They also mark their opd section. */
74f0fb50 6486 eh->elf.root.u.def.section->gc_mark = 1;
ccfa59ea 6487
b31867b6 6488 rsec = fh->elf.root.u.def.section;
ccfa59ea 6489 }
8387904d
AM		 6490 else if (get_opd_info (eh->elf.root.u.def.section) != NULL
6491 && opd_entry_value (eh->elf.root.u.def.section,
6492 eh->elf.root.u.def.value,
aef36ac1 6493 &rsec, NULL, FALSE) != (bfd_vma) -1)
74f0fb50 6494 eh->elf.root.u.def.section->gc_mark = 1;
ccfa59ea 6495 else
1e2f5b6e
AM		 6496 rsec = h->root.u.def.section;
6497 break;
5bd4f169
AM		 6498
6499 case bfd_link_hash_common:
1e2f5b6e
AM		 6500 rsec = h->root.u.c.p->section;
6501 break;
5bd4f169
AM		 6502
6503 default:
fb34365b 6504 return _bfd_elf_gc_mark_hook (sec, info, rel, h, sym);
5bd4f169
AM		 6505 }
6506 }
6507 }
6508 else
6509 {
74f0fb50 6510 struct _opd_sec_data *opd;
1e2f5b6e
AM		 6511
6512 rsec = bfd_section_from_elf_index (sec->owner, sym->st_shndx);
74f0fb50
AM		 6513 opd = get_opd_info (rsec);
6514 if (opd != NULL && opd->func_sec != NULL)
ccfa59ea 6515 {
74f0fb50 6516 rsec->gc_mark = 1;
ccfa59ea 6517
51aecdc5 6518 rsec = opd->func_sec[OPD_NDX (sym->st_value + rel->r_addend)];
ccfa59ea 6519 }
5bd4f169
AM		 6520 }
6521
1e2f5b6e 6522 return rsec;
5bd4f169
AM		 6523}
6524
65f38f15
AM		 6525/* Update the .got, .plt. and dynamic reloc reference counts for the
6526 section being removed. */
5bd4f169 6527
b34976b6 6528static bfd_boolean
4ce794b7
AM		 6529ppc64_elf_gc_sweep_hook (bfd *abfd, struct bfd_link_info *info,
6530 asection *sec, const Elf_Internal_Rela *relocs)
5bd4f169 6531{
411e1bfb 6532 struct ppc_link_hash_table *htab;
5bd4f169
AM		 6533 Elf_Internal_Shdr *symtab_hdr;
6534 struct elf_link_hash_entry **sym_hashes;
411e1bfb 6535 struct got_entry **local_got_ents;
5bd4f169 6536 const Elf_Internal_Rela *rel, *relend;
5bd4f169 6537
0e1862bb 6538 if (bfd_link_relocatable (info))
7dda2462
TG		 6539 return TRUE;
6540
680a3378
AM		 6541 if ((sec->flags & SEC_ALLOC) == 0)
6542 return TRUE;
6543
ec338859
AM		 6544 elf_section_data (sec)->local_dynrel = NULL;
6545
411e1bfb 6546 htab = ppc_hash_table (info);
4dfe6ac6
NC		 6547 if (htab == NULL)
6548 return FALSE;
6549
0ffa91dd 6550 symtab_hdr = &elf_symtab_hdr (abfd);
5bd4f169 6551 sym_hashes = elf_sym_hashes (abfd);
411e1bfb 6552 local_got_ents = elf_local_got_ents (abfd);
5bd4f169
AM		 6553
6554 relend = relocs + sec->reloc_count;
6555 for (rel = relocs; rel < relend; rel++)
a33d1f77
AM		 6556 {
6557 unsigned long r_symndx;
04c9666a 6558 enum elf_ppc64_reloc_type r_type;
58ac9f71 6559 struct elf_link_hash_entry *h = NULL;
cbf95972 6560 struct plt_entry **plt_list;
f961d9dd 6561 unsigned char tls_type = 0;
5bd4f169 6562
a33d1f77 6563 r_symndx = ELF64_R_SYM (rel->r_info);
4ce794b7 6564 r_type = ELF64_R_TYPE (rel->r_info);
58ac9f71
AM		 6565 if (r_symndx >= symtab_hdr->sh_info)
6566 {
6567 struct ppc_link_hash_entry *eh;
6061a67d
AM		 6568 struct elf_dyn_relocs **pp;
6569 struct elf_dyn_relocs *p;
58ac9f71
AM		 6570
6571 h = sym_hashes[r_symndx - symtab_hdr->sh_info];
b31867b6 6572 h = elf_follow_link (h);
58ac9f71
AM		 6573 eh = (struct ppc_link_hash_entry *) h;
6574
6575 for (pp = &eh->dyn_relocs; (p = *pp) != NULL; pp = &p->next)
6576 if (p->sec == sec)
6577 {
6578 /* Everything must go for SEC. */
6579 *pp = p->next;
6580 break;
6581 }
6582 }
6583
a33d1f77
AM		 6584 switch (r_type)
6585 {
411e1bfb
AM		 6586 case R_PPC64_GOT_TLSLD16:
6587 case R_PPC64_GOT_TLSLD16_LO:
6588 case R_PPC64_GOT_TLSLD16_HI:
6589 case R_PPC64_GOT_TLSLD16_HA:
951fd09b 6590 tls_type = TLS_TLS | TLS_LD;
411e1bfb
AM		 6591 goto dogot;
6592
6593 case R_PPC64_GOT_TLSGD16:
6594 case R_PPC64_GOT_TLSGD16_LO:
6595 case R_PPC64_GOT_TLSGD16_HI:
6596 case R_PPC64_GOT_TLSGD16_HA:
951fd09b 6597 tls_type = TLS_TLS | TLS_GD;
411e1bfb
AM		 6598 goto dogot;
6599
6600 case R_PPC64_GOT_TPREL16_DS:
6601 case R_PPC64_GOT_TPREL16_LO_DS:
6602 case R_PPC64_GOT_TPREL16_HI:
6603 case R_PPC64_GOT_TPREL16_HA:
6604 tls_type = TLS_TLS | TLS_TPREL;
6605 goto dogot;
6606
6607 case R_PPC64_GOT_DTPREL16_DS:
6608 case R_PPC64_GOT_DTPREL16_LO_DS:
6609 case R_PPC64_GOT_DTPREL16_HI:
6610 case R_PPC64_GOT_DTPREL16_HA:
6611 tls_type = TLS_TLS | TLS_DTPREL;
6612 goto dogot;
6613
a33d1f77
AM		 6614 case R_PPC64_GOT16:
6615 case R_PPC64_GOT16_DS:
6616 case R_PPC64_GOT16_HA:
6617 case R_PPC64_GOT16_HI:
6618 case R_PPC64_GOT16_LO:
6619 case R_PPC64_GOT16_LO_DS:
411e1bfb
AM		 6620 dogot:
6621 {
6622 struct got_entry *ent;
6623
58ac9f71
AM		 6624 if (h != NULL)
6625 ent = h->got.glist;
411e1bfb
AM		 6626 else
6627 ent = local_got_ents[r_symndx];
6628
6629 for (; ent != NULL; ent = ent->next)
6630 if (ent->addend == rel->r_addend
e717da7e 6631 && ent->owner == abfd
411e1bfb
AM		 6632 && ent->tls_type == tls_type)
6633 break;
6634 if (ent == NULL)
6635 abort ();
6636 if (ent->got.refcount > 0)
6637 ent->got.refcount -= 1;
6638 }
a33d1f77 6639 break;
65f38f15 6640
a33d1f77
AM		 6641 case R_PPC64_PLT16_HA:
6642 case R_PPC64_PLT16_HI:
6643 case R_PPC64_PLT16_LO:
6644 case R_PPC64_PLT32:
6645 case R_PPC64_PLT64:
721956f4
AM		 6646 case R_PPC64_REL14:
6647 case R_PPC64_REL14_BRNTAKEN:
6648 case R_PPC64_REL14_BRTAKEN:
5d1634d7 6649 case R_PPC64_REL24:
cbf95972 6650 plt_list = NULL;
58ac9f71 6651 if (h != NULL)
cbf95972
AM		 6652 plt_list = &h->plt.plist;
6653 else if (local_got_ents != NULL)
6654 {
6655 struct plt_entry **local_plt = (struct plt_entry **)
6656 (local_got_ents + symtab_hdr->sh_info);
6657 unsigned char *local_got_tls_masks = (unsigned char *)
6658 (local_plt + symtab_hdr->sh_info);
6659 if ((local_got_tls_masks[r_symndx] & PLT_IFUNC) != 0)
6660 plt_list = local_plt + r_symndx;
6661 }
6662 if (plt_list)
5d1634d7 6663 {
411e1bfb
AM		 6664 struct plt_entry *ent;
6665
cbf95972 6666 for (ent = *plt_list; ent != NULL; ent = ent->next)
411e1bfb
AM		 6667 if (ent->addend == rel->r_addend)
6668 break;
7c6c1722 6669 if (ent != NULL && ent->plt.refcount > 0)
411e1bfb 6670 ent->plt.refcount -= 1;
5d1634d7 6671 }
e86ce104 6672 break;
5d1634d7 6673
a33d1f77
AM		 6674 default:
6675 break;
6676 }
6677 }
b34976b6 6678 return TRUE;
5bd4f169
AM		 6679}
6680
deb0e272
AM		 6681/* The maximum size of .sfpr. */
6682#define SFPR_MAX (218*4)
6683
6684struct sfpr_def_parms
6685{
699733f6
AM		 6686 const char name[12];
6687 unsigned char lo, hi;
deb0e272
AM		 6688 bfd_byte * (*write_ent) (bfd *, bfd_byte *, int);
6689 bfd_byte * (*write_tail) (bfd *, bfd_byte *, int);
6690};
6691
a4b6fadd
AM		 6692/* Auto-generate _save*, _rest* functions in .sfpr.
6693 If STUB_SEC is non-null, define alias symbols in STUB_SEC
6694 instead. */
deb0e272 6695
4dfe6ac6 6696static bfd_boolean
a4b6fadd
AM		 6697sfpr_define (struct bfd_link_info *info,
6698 const struct sfpr_def_parms *parm,
6699 asection *stub_sec)
deb0e272
AM		 6700{
6701 struct ppc_link_hash_table *htab = ppc_hash_table (info);
6702 unsigned int i;
6703 size_t len = strlen (parm->name);
6704 bfd_boolean writing = FALSE;
699733f6 6705 char sym[16];
deb0e272 6706
4dfe6ac6
NC		 6707 if (htab == NULL)
6708 return FALSE;
6709
deb0e272
AM		 6710 memcpy (sym, parm->name, len);
6711 sym[len + 2] = 0;
6712
6713 for (i = parm->lo; i <= parm->hi; i++)
6714 {
a4b6fadd 6715 struct ppc_link_hash_entry *h;
deb0e272
AM		 6716
6717 sym[len + 0] = i / 10 + '0';
6718 sym[len + 1] = i % 10 + '0';
a4b6fadd 6719 h = (struct ppc_link_hash_entry *)
b32547cd 6720 elf_link_hash_lookup (&htab->elf, sym, writing, TRUE, TRUE);
a4b6fadd 6721 if (stub_sec != NULL)
deb0e272 6722 {
a4b6fadd
AM		 6723 if (h != NULL
6724 && h->elf.root.type == bfd_link_hash_defined
6725 && h->elf.root.u.def.section == htab->sfpr)
6726 {
6727 struct elf_link_hash_entry *s;
6728 char buf[32];
6729 sprintf (buf, "%08x.%s", stub_sec->id & 0xffffffff, sym);
6730 s = elf_link_hash_lookup (&htab->elf, buf, TRUE, TRUE, FALSE);
6731 if (s == NULL)
6732 return FALSE;
6733 if (s->root.type == bfd_link_hash_new
6734 || (s->root.type = bfd_link_hash_defined
6735 && s->root.u.def.section == stub_sec))
6736 {
6737 s->root.type = bfd_link_hash_defined;
6738 s->root.u.def.section = stub_sec;
6739 s->root.u.def.value = (stub_sec->size
6740 + h->elf.root.u.def.value);
6741 s->ref_regular = 1;
6742 s->def_regular = 1;
6743 s->ref_regular_nonweak = 1;
6744 s->forced_local = 1;
6745 s->non_elf = 0;
6746 s->root.linker_def = 1;
6747 }
6748 }
6749 continue;
6750 }
6751 if (h != NULL)
6752 {
6753 h->save_res = 1;
6754 if (!h->elf.def_regular)
deb0e272 6755 {
a4b6fadd
AM		 6756 h->elf.root.type = bfd_link_hash_defined;
6757 h->elf.root.u.def.section = htab->sfpr;
6758 h->elf.root.u.def.value = htab->sfpr->size;
6759 h->elf.type = STT_FUNC;
6760 h->elf.def_regular = 1;
b32547cd 6761 h->elf.non_elf = 0;
a4b6fadd
AM		 6762 _bfd_elf_link_hash_hide_symbol (info, &h->elf, TRUE);
6763 writing = TRUE;
deb0e272 6764 if (htab->sfpr->contents == NULL)
a4b6fadd
AM		 6765 {
6766 htab->sfpr->contents = bfd_alloc (htab->elf.dynobj, SFPR_MAX);
6767 if (htab->sfpr->contents == NULL)
6768 return FALSE;
6769 }
deb0e272
AM		 6770 }
6771 }
6772 if (writing)
6773 {
6774 bfd_byte *p = htab->sfpr->contents + htab->sfpr->size;
6775 if (i != parm->hi)
6776 p = (*parm->write_ent) (htab->elf.dynobj, p, i);
6777 else
6778 p = (*parm->write_tail) (htab->elf.dynobj, p, i);
6779 htab->sfpr->size = p - htab->sfpr->contents;
6780 }
6781 }
6782
6783 return TRUE;
6784}
6785
6786static bfd_byte *
6787savegpr0 (bfd *abfd, bfd_byte *p, int r)
6788{
6789 bfd_put_32 (abfd, STD_R0_0R1 + (r << 21) + (1 << 16) - (32 - r) * 8, p);
6790 return p + 4;
6791}
6792
6793static bfd_byte *
6794savegpr0_tail (bfd *abfd, bfd_byte *p, int r)
6795{
6796 p = savegpr0 (abfd, p, r);
a078d95a 6797 bfd_put_32 (abfd, STD_R0_0R1 + STK_LR, p);
deb0e272
AM		 6798 p = p + 4;
6799 bfd_put_32 (abfd, BLR, p);
6800 return p + 4;
6801}
6802
6803static bfd_byte *
6804restgpr0 (bfd *abfd, bfd_byte *p, int r)
6805{
6806 bfd_put_32 (abfd, LD_R0_0R1 + (r << 21) + (1 << 16) - (32 - r) * 8, p);
6807 return p + 4;
6808}
6809
6810static bfd_byte *
6811restgpr0_tail (bfd *abfd, bfd_byte *p, int r)
6812{
a078d95a 6813 bfd_put_32 (abfd, LD_R0_0R1 + STK_LR, p);
deb0e272
AM		 6814 p = p + 4;
6815 p = restgpr0 (abfd, p, r);
6816 bfd_put_32 (abfd, MTLR_R0, p);
6817 p = p + 4;
6818 if (r == 29)
6819 {
6820 p = restgpr0 (abfd, p, 30);
6821 p = restgpr0 (abfd, p, 31);
6822 }
6823 bfd_put_32 (abfd, BLR, p);
6824 return p + 4;
6825}
6826
6827static bfd_byte *
6828savegpr1 (bfd *abfd, bfd_byte *p, int r)
6829{
6830 bfd_put_32 (abfd, STD_R0_0R12 + (r << 21) + (1 << 16) - (32 - r) * 8, p);
6831 return p + 4;
6832}
6833
6834static bfd_byte *
6835savegpr1_tail (bfd *abfd, bfd_byte *p, int r)
6836{
6837 p = savegpr1 (abfd, p, r);
6838 bfd_put_32 (abfd, BLR, p);
6839 return p + 4;
6840}
6841
6842static bfd_byte *
6843restgpr1 (bfd *abfd, bfd_byte *p, int r)
6844{
6845 bfd_put_32 (abfd, LD_R0_0R12 + (r << 21) + (1 << 16) - (32 - r) * 8, p);
6846 return p + 4;
6847}
6848
6849static bfd_byte *
6850restgpr1_tail (bfd *abfd, bfd_byte *p, int r)
6851{
6852 p = restgpr1 (abfd, p, r);
6853 bfd_put_32 (abfd, BLR, p);
6854 return p + 4;
6855}
6856
6857static bfd_byte *
6858savefpr (bfd *abfd, bfd_byte *p, int r)
6859{
6860 bfd_put_32 (abfd, STFD_FR0_0R1 + (r << 21) + (1 << 16) - (32 - r) * 8, p);
6861 return p + 4;
6862}
6863
6864static bfd_byte *
6865savefpr0_tail (bfd *abfd, bfd_byte *p, int r)
6866{
6867 p = savefpr (abfd, p, r);
a078d95a 6868 bfd_put_32 (abfd, STD_R0_0R1 + STK_LR, p);
deb0e272
AM		 6869 p = p + 4;
6870 bfd_put_32 (abfd, BLR, p);
6871 return p + 4;
6872}
6873
6874static bfd_byte *
6875restfpr (bfd *abfd, bfd_byte *p, int r)
6876{
6877 bfd_put_32 (abfd, LFD_FR0_0R1 + (r << 21) + (1 << 16) - (32 - r) * 8, p);
6878 return p + 4;
6879}
6880
6881static bfd_byte *
6882restfpr0_tail (bfd *abfd, bfd_byte *p, int r)
6883{
a078d95a 6884 bfd_put_32 (abfd, LD_R0_0R1 + STK_LR, p);
deb0e272
AM		 6885 p = p + 4;
6886 p = restfpr (abfd, p, r);
6887 bfd_put_32 (abfd, MTLR_R0, p);
6888 p = p + 4;
6889 if (r == 29)
6890 {
6891 p = restfpr (abfd, p, 30);
6892 p = restfpr (abfd, p, 31);
6893 }
6894 bfd_put_32 (abfd, BLR, p);
6895 return p + 4;
6896}
6897
6898static bfd_byte *
6899savefpr1_tail (bfd *abfd, bfd_byte *p, int r)
6900{
6901 p = savefpr (abfd, p, r);
6902 bfd_put_32 (abfd, BLR, p);
6903 return p + 4;
6904}
6905
6906static bfd_byte *
6907restfpr1_tail (bfd *abfd, bfd_byte *p, int r)
6908{
6909 p = restfpr (abfd, p, r);
6910 bfd_put_32 (abfd, BLR, p);
6911 return p + 4;
6912}
6913
6914static bfd_byte *
6915savevr (bfd *abfd, bfd_byte *p, int r)
6916{
6917 bfd_put_32 (abfd, LI_R12_0 + (1 << 16) - (32 - r) * 16, p);
6918 p = p + 4;
6919 bfd_put_32 (abfd, STVX_VR0_R12_R0 + (r << 21), p);
6920 return p + 4;
6921}
6922
6923static bfd_byte *
6924savevr_tail (bfd *abfd, bfd_byte *p, int r)
6925{
6926 p = savevr (abfd, p, r);
6927 bfd_put_32 (abfd, BLR, p);
6928 return p + 4;
6929}
6930
6931static bfd_byte *
6932restvr (bfd *abfd, bfd_byte *p, int r)
6933{
6934 bfd_put_32 (abfd, LI_R12_0 + (1 << 16) - (32 - r) * 16, p);
6935 p = p + 4;
6936 bfd_put_32 (abfd, LVX_VR0_R12_R0 + (r << 21), p);
6937 return p + 4;
6938}
6939
6940static bfd_byte *
6941restvr_tail (bfd *abfd, bfd_byte *p, int r)
6942{
6943 p = restvr (abfd, p, r);
6944 bfd_put_32 (abfd, BLR, p);
6945 return p + 4;
6946}
6947
e86ce104
AM		 6948/* Called via elf_link_hash_traverse to transfer dynamic linking
6949 information on function code symbol entries to their corresponding
6950 function descriptor symbol entries. */
deb0e272 6951
b34976b6 6952static bfd_boolean
4ce794b7 6953func_desc_adjust (struct elf_link_hash_entry *h, void *inf)
5bd4f169 6954{
e86ce104 6955 struct bfd_link_info *info;
65f38f15 6956 struct ppc_link_hash_table *htab;
411e1bfb 6957 struct plt_entry *ent;
50bc7936
AM		 6958 struct ppc_link_hash_entry *fh;
6959 struct ppc_link_hash_entry *fdh;
6960 bfd_boolean force_local;
5bd4f169 6961
50bc7936
AM		 6962 fh = (struct ppc_link_hash_entry *) h;
6963 if (fh->elf.root.type == bfd_link_hash_indirect)
b34976b6 6964 return TRUE;
e86ce104 6965
4ce794b7 6966 info = inf;
65f38f15 6967 htab = ppc_hash_table (info);
4dfe6ac6
NC		 6968 if (htab == NULL)
6969 return FALSE;
5bd4f169 6970
c09bdfe5
AM		 6971 /* Resolve undefined references to dot-symbols as the value
6972 in the function descriptor, if we have one in a regular object.
6973 This is to satisfy cases like ".quad .foo". Calls to functions
6974 in dynamic objects are handled elsewhere. */
6975 if (fh->elf.root.type == bfd_link_hash_undefweak
6976 && fh->was_undefined
b31867b6
AM		 6977 && (fdh = defined_func_desc (fh)) != NULL
6978 && get_opd_info (fdh->elf.root.u.def.section) != NULL
6979 && opd_entry_value (fdh->elf.root.u.def.section,
6980 fdh->elf.root.u.def.value,
c09bdfe5 6981 &fh->elf.root.u.def.section,
aef36ac1 6982 &fh->elf.root.u.def.value, FALSE) != (bfd_vma) -1)
c09bdfe5 6983 {
b31867b6 6984 fh->elf.root.type = fdh->elf.root.type;
f5385ebf 6985 fh->elf.forced_local = 1;
b31867b6
AM		 6986 fh->elf.def_regular = fdh->elf.def_regular;
6987 fh->elf.def_dynamic = fdh->elf.def_dynamic;
c09bdfe5
AM		 6988 }
6989
e86ce104
AM		 6990 /* If this is a function code symbol, transfer dynamic linking
6991 information to the function descriptor symbol. */
50bc7936 6992 if (!fh->is_func)
b34976b6 6993 return TRUE;
e86ce104 6994
50bc7936 6995 for (ent = fh->elf.plt.plist; ent != NULL; ent = ent->next)
411e1bfb
AM		 6996 if (ent->plt.refcount > 0)
6997 break;
50bc7936
AM		 6998 if (ent == NULL
6999 || fh->elf.root.root.string[0] != '.'
7000 || fh->elf.root.root.string[1] == '\0')
7001 return TRUE;
5bd4f169 7002
50bc7936
AM		 7003 /* Find the corresponding function descriptor symbol. Create it
7004 as undefined if necessary. */
5bd4f169 7005
b31867b6 7006 fdh = lookup_fdh (fh, htab);
50bc7936 7007 if (fdh == NULL
0e1862bb 7008 && !bfd_link_executable (info)
50bc7936
AM		 7009 && (fh->elf.root.type == bfd_link_hash_undefined
7010 || fh->elf.root.type == bfd_link_hash_undefweak))
7011 {
908b32fc 7012 fdh = make_fdh (info, fh);
bb700d78
AM		 7013 if (fdh == NULL)
7014 return FALSE;
50bc7936 7015 }
648cca2c 7016
908b32fc 7017 /* Fake function descriptors are made undefweak. If the function
433817dd
AM		 7018 code symbol is strong undefined, make the fake sym the same.
7019 If the function code symbol is defined, then force the fake
7020 descriptor local; We can't support overriding of symbols in a
7021 shared library on a fake descriptor. */
908b32fc
AM		 7022
7023 if (fdh != NULL
7024 && fdh->fake
433817dd 7025 && fdh->elf.root.type == bfd_link_hash_undefweak)
908b32fc 7026 {
433817dd
AM		 7027 if (fh->elf.root.type == bfd_link_hash_undefined)
7028 {
7029 fdh->elf.root.type = bfd_link_hash_undefined;
7030 bfd_link_add_undef (&htab->elf.root, &fdh->elf.root);
7031 }
7032 else if (fh->elf.root.type == bfd_link_hash_defined
7033 || fh->elf.root.type == bfd_link_hash_defweak)
7034 {
7035 _bfd_elf_link_hash_hide_symbol (info, &fdh->elf, TRUE);
7036 }
908b32fc
AM		 7037 }
7038
50bc7936 7039 if (fdh != NULL
f5385ebf 7040 && !fdh->elf.forced_local
0e1862bb 7041 && (!bfd_link_executable (info)
f5385ebf
AM		 7042 || fdh->elf.def_dynamic
7043 || fdh->elf.ref_dynamic
50bc7936
AM		 7044 || (fdh->elf.root.type == bfd_link_hash_undefweak
7045 && ELF_ST_VISIBILITY (fdh->elf.other) == STV_DEFAULT)))
7046 {
7047 if (fdh->elf.dynindx == -1)
c152c796 7048 if (! bfd_elf_link_record_dynamic_symbol (info, &fdh->elf))
50bc7936 7049 return FALSE;
f5385ebf
AM		 7050 fdh->elf.ref_regular |= fh->elf.ref_regular;
7051 fdh->elf.ref_dynamic |= fh->elf.ref_dynamic;
7052 fdh->elf.ref_regular_nonweak |= fh->elf.ref_regular_nonweak;
7053 fdh->elf.non_got_ref |= fh->elf.non_got_ref;
50bc7936 7054 if (ELF_ST_VISIBILITY (fh->elf.other) == STV_DEFAULT)
e86ce104 7055 {
40d16e0b 7056 move_plt_plist (fh, fdh);
f5385ebf 7057 fdh->elf.needs_plt = 1;
e86ce104 7058 }
50bc7936 7059 fdh->is_func_descriptor = 1;
34814b9f
AM		 7060 fdh->oh = fh;
7061 fh->oh = fdh;
e86ce104
AM		 7062 }
7063
50bc7936
AM		 7064 /* Now that the info is on the function descriptor, clear the
7065 function code sym info. Any function code syms for which we
7066 don't have a definition in a regular file, we force local.
7067 This prevents a shared library from exporting syms that have
7068 been imported from another library. Function code syms that
7069 are really in the library we must leave global to prevent the
7070 linker dragging in a definition from a static library. */
93f3fa99
AM		 7071 force_local = (!fh->elf.def_regular
7072 || fdh == NULL
7073 || !fdh->elf.def_regular
7074 || fdh->elf.forced_local);
50bc7936
AM		 7075 _bfd_elf_link_hash_hide_symbol (info, &fh->elf, force_local);
7076
b34976b6 7077 return TRUE;
e86ce104 7078}
40b8271b 7079
a4b6fadd
AM		 7080static const struct sfpr_def_parms save_res_funcs[] =
7081 {
7082 { "_savegpr0_", 14, 31, savegpr0, savegpr0_tail },
7083 { "_restgpr0_", 14, 29, restgpr0, restgpr0_tail },
7084 { "_restgpr0_", 30, 31, restgpr0, restgpr0_tail },
7085 { "_savegpr1_", 14, 31, savegpr1, savegpr1_tail },
7086 { "_restgpr1_", 14, 31, restgpr1, restgpr1_tail },
7087 { "_savefpr_", 14, 31, savefpr, savefpr0_tail },
7088 { "_restfpr_", 14, 29, restfpr, restfpr0_tail },
7089 { "_restfpr_", 30, 31, restfpr, restfpr0_tail },
7090 { "._savef", 14, 31, savefpr, savefpr1_tail },
7091 { "._restf", 14, 31, restfpr, restfpr1_tail },
7092 { "_savevr_", 20, 31, savevr, savevr_tail },
7093 { "_restvr_", 20, 31, restvr, restvr_tail }
7094 };
7095
e86ce104 7096/* Called near the start of bfd_elf_size_dynamic_sections. We use
82bd7b59
AM		 7097 this hook to a) provide some gcc support functions, and b) transfer
7098 dynamic linking information gathered so far on function code symbol
7099 entries, to their corresponding function descriptor symbol entries. */
deb0e272 7100
b34976b6 7101static bfd_boolean
4ce794b7
AM		 7102ppc64_elf_func_desc_adjust (bfd *obfd ATTRIBUTE_UNUSED,
7103 struct bfd_link_info *info)
e86ce104
AM		 7104{
7105 struct ppc_link_hash_table *htab;
7106
7107 htab = ppc_hash_table (info);
4dfe6ac6
NC		 7108 if (htab == NULL)
7109 return FALSE;
7110
b32547cd
AM		 7111 /* Provide any missing _save* and _rest* functions. */
7112 if (htab->sfpr != NULL)
7113 {
7114 unsigned int i;
7115
7116 htab->sfpr->size = 0;
7117 for (i = 0; i < ARRAY_SIZE (save_res_funcs); i++)
7118 if (!sfpr_define (info, &save_res_funcs[i], NULL))
7119 return FALSE;
7120 if (htab->sfpr->size == 0)
7121 htab->sfpr->flags |= SEC_EXCLUDE;
7122 }
7123
7124 if (bfd_link_relocatable (info))
7125 return TRUE;
7126
7127 if (htab->elf.hgot != NULL)
dba6fa9b
AM		 7128 {
7129 _bfd_elf_link_hash_hide_symbol (info, htab->elf.hgot, TRUE);
7130 /* Make .TOC. defined so as to prevent it being made dynamic.
7131 The wrong value here is fixed later in ppc64_elf_set_toc. */
43417696
AM		 7132 if (!htab->elf.hgot->def_regular
7133 || htab->elf.hgot->root.type != bfd_link_hash_defined)
7134 {
7135 htab->elf.hgot->root.type = bfd_link_hash_defined;
7136 htab->elf.hgot->root.u.def.value = 0;
7137 htab->elf.hgot->root.u.def.section = bfd_abs_section_ptr;
7138 htab->elf.hgot->def_regular = 1;
7139 htab->elf.hgot->root.linker_def = 1;
7140 }
dba6fa9b 7141 htab->elf.hgot->type = STT_OBJECT;
dba6fa9b
AM		 7142 htab->elf.hgot->other = ((htab->elf.hgot->other & ~ELF_ST_VISIBILITY (-1))
7143 | STV_HIDDEN);
7144 }
c66bb0ee 7145
4ce794b7 7146 elf_link_hash_traverse (&htab->elf, func_desc_adjust, info);
805fc799 7147
b34976b6 7148 return TRUE;
e86ce104
AM		 7149}
7150
8a2058b5
AM		 7151/* Return true if we have dynamic relocs against H that apply to
7152 read-only sections. */
a345bc8d
AM		 7153
7154static bfd_boolean
7155readonly_dynrelocs (struct elf_link_hash_entry *h)
7156{
7157 struct ppc_link_hash_entry *eh;
7158 struct elf_dyn_relocs *p;
7159
7160 eh = (struct ppc_link_hash_entry *) h;
7161 for (p = eh->dyn_relocs; p != NULL; p = p->next)
7162 {
7163 asection *s = p->sec->output_section;
7164
7165 if (s != NULL && (s->flags & SEC_READONLY) != 0)
7166 return TRUE;
7167 }
7168 return FALSE;
7169}
7170
d311bc8b
AM		 7171/* Return true if we have dynamic relocs against H or any of its weak
7172 aliases, that apply to read-only sections. */
7173
7174static bfd_boolean
7175alias_readonly_dynrelocs (struct elf_link_hash_entry *h)
7176{
7177 struct ppc_link_hash_entry *eh;
7178
7179 eh = (struct ppc_link_hash_entry *) h;
7180 do
7181 {
7182 if (readonly_dynrelocs (&eh->elf))
7183 return TRUE;
7184 eh = eh->weakref;
7185 } while (eh != NULL && &eh->elf != h);
7186
7187 return FALSE;
7188}
8a2058b5 7189
8a9e8e72
AM		 7190/* Return whether EH has pc-relative dynamic relocs. */
7191
7192static bfd_boolean
7193pc_dynrelocs (struct ppc_link_hash_entry *eh)
7194{
7195 struct elf_dyn_relocs *p;
7196
7197 for (p = eh->dyn_relocs; p != NULL; p = p->next)
7198 if (p->pc_count != 0)
7199 return TRUE;
7200 return FALSE;
7201}
7202
8a2058b5
AM		 7203/* Return true if a global entry stub will be created for H. Valid
7204 for ELFv2 before plt entries have been allocated. */
7205
7206static bfd_boolean
7207global_entry_stub (struct elf_link_hash_entry *h)
7208{
7209 struct plt_entry *pent;
7210
7211 if (!h->pointer_equality_needed
7212 || h->def_regular)
7213 return FALSE;
7214
7215 for (pent = h->plt.plist; pent != NULL; pent = pent->next)
7216 if (pent->plt.refcount > 0
7217 && pent->addend == 0)
7218 return TRUE;
7219
7220 return FALSE;
7221}
7222
e86ce104
AM		 7223/* Adjust a symbol defined by a dynamic object and referenced by a
7224 regular object. The current definition is in some section of the
7225 dynamic object, but we're not including those sections. We have to
7226 change the definition to something the rest of the link can
7227 understand. */
7228
b34976b6 7229static bfd_boolean
4ce794b7
AM		 7230ppc64_elf_adjust_dynamic_symbol (struct bfd_link_info *info,
7231 struct elf_link_hash_entry *h)
e86ce104
AM		 7232{
7233 struct ppc_link_hash_table *htab;
e86ce104 7234 asection *s;
e86ce104
AM		 7235
7236 htab = ppc_hash_table (info);
4dfe6ac6
NC		 7237 if (htab == NULL)
7238 return FALSE;
e86ce104
AM		 7239
7240 /* Deal with function syms. */
7241 if (h->type == STT_FUNC
e054468f 7242 || h->type == STT_GNU_IFUNC
f5385ebf 7243 || h->needs_plt)
e86ce104
AM		 7244 {
7245 /* Clear procedure linkage table information for any symbol that
7246 won't need a .plt entry. */
411e1bfb
AM		 7247 struct plt_entry *ent;
7248 for (ent = h->plt.plist; ent != NULL; ent = ent->next)
7249 if (ent->plt.refcount > 0)
7250 break;
8387904d 7251 if (ent == NULL
e054468f
AM		 7252 || (h->type != STT_GNU_IFUNC
7253 && (SYMBOL_CALLS_LOCAL (info, h)
7254 || (ELF_ST_VISIBILITY (h->other) != STV_DEFAULT
a4b6fadd
AM		 7255 && h->root.type == bfd_link_hash_undefweak)))
7256 || ((struct ppc_link_hash_entry *) h)->save_res)
40b8271b 7257 {
411e1bfb 7258 h->plt.plist = NULL;
f5385ebf 7259 h->needs_plt = 0;
d1eca1e4 7260 h->pointer_equality_needed = 0;
40b8271b 7261 }
8a2058b5 7262 else if (abiversion (info->output_bfd) >= 2)
a345bc8d 7263 {
d1eca1e4
AM		 7264 /* Taking a function's address in a read/write section
7265 doesn't require us to define the function symbol in the
7266 executable on a global entry stub. A dynamic reloc can
8a2058b5
AM		 7267 be used instead. The reason we prefer a few more dynamic
7268 relocs is that calling via a global entry stub costs a
7269 few more instructions, and pointer_equality_needed causes
7270 extra work in ld.so when resolving these symbols. */
7271 if (global_entry_stub (h)
d311bc8b 7272 && !alias_readonly_dynrelocs (h))
d1eca1e4
AM		 7273 {
7274 h->pointer_equality_needed = 0;
8a2058b5
AM		 7275 /* After adjust_dynamic_symbol, non_got_ref set in
7276 the non-pic case means that dyn_relocs for this
7277 symbol should be discarded. */
d1eca1e4
AM		 7278 h->non_got_ref = 0;
7279 }
7280
a345bc8d
AM		 7281 /* If making a plt entry, then we don't need copy relocs. */
7282 return TRUE;
7283 }
5bd4f169 7284 }
bbd7ec4a 7285 else
411e1bfb 7286 h->plt.plist = NULL;
5bd4f169
AM		 7287
7288 /* If this is a weak symbol, and there is a real definition, the
7289 processor independent code will have arranged for us to see the
7290 real definition first, and we can just use the same value. */
f6e332e6 7291 if (h->u.weakdef != NULL)
5bd4f169 7292 {
f6e332e6
AM		 7293 BFD_ASSERT (h->u.weakdef->root.type == bfd_link_hash_defined
7294 || h->u.weakdef->root.type == bfd_link_hash_defweak);
7295 h->root.u.def.section = h->u.weakdef->root.u.def.section;
7296 h->root.u.def.value = h->u.weakdef->root.u.def.value;
a23b6845 7297 if (ELIMINATE_COPY_RELOCS)
f6e332e6 7298 h->non_got_ref = h->u.weakdef->non_got_ref;
b34976b6 7299 return TRUE;
5bd4f169
AM		 7300 }
7301
5bd4f169
AM		 7302 /* If we are creating a shared library, we must presume that the
7303 only references to the symbol are via the global offset table.
7304 For such cases we need not do anything here; the relocations will
7305 be handled correctly by relocate_section. */
0e1862bb 7306 if (bfd_link_pic (info))
b34976b6 7307 return TRUE;
5bd4f169 7308
65f38f15
AM		 7309 /* If there are no references to this symbol that do not use the
7310 GOT, we don't need to generate a copy reloc. */
f5385ebf 7311 if (!h->non_got_ref)
b34976b6 7312 return TRUE;
65f38f15 7313
b186458a 7314 /* Don't generate a copy reloc for symbols defined in the executable. */
d93d1c80 7315 if (!h->def_dynamic || !h->ref_regular || h->def_regular
b186458a 7316
d93d1c80
AM		 7317 /* If -z nocopyreloc was given, don't generate them either. */
7318 || info->nocopyreloc
a127494f 7319
d93d1c80
AM		 7320 /* If we didn't find any dynamic relocs in read-only sections, then
7321 we'll be keeping the dynamic relocs and avoiding the copy reloc. */
d311bc8b 7322 || (ELIMINATE_COPY_RELOCS && !alias_readonly_dynrelocs (h))
65f38f15 7323
d93d1c80
AM		 7324 /* Protected variables do not work with .dynbss. The copy in
7325 .dynbss won't be used by the shared library with the protected
7326 definition for the variable. Text relocations are preferable
7327 to an incorrect program. */
7328 || h->protected_def)
a127494f
AM		 7329 {
7330 h->non_got_ref = 0;
7331 return TRUE;
7332 }
7333
5d35169e 7334 if (h->plt.plist != NULL)
97b639ba
AM		 7335 {
7336 /* We should never get here, but unfortunately there are versions
7337 of gcc out there that improperly (for this ABI) put initialized
7338 function pointers, vtable refs and suchlike in read-only
7339 sections. Allow them to proceed, but warn that this might
7340 break at runtime. */
25f53a85 7341 info->callbacks->einfo
bc30df16 7342 (_("%P: copy reloc against `%T' requires lazy plt linking; "
25f53a85 7343 "avoid setting LD_BIND_NOW=1 or upgrade gcc\n"),
97b639ba
AM		 7344 h->root.root.string);
7345 }
5d35169e
AM		 7346
7347 /* This is a reference to a symbol defined by a dynamic object which
7348 is not a function. */
7349
5bd4f169
AM		 7350 /* We must allocate the symbol in our .dynbss section, which will
7351 become part of the .bss section of the executable. There will be
7352 an entry for this symbol in the .dynsym section. The dynamic
7353 object will contain position independent code, so all references
7354 from the dynamic object to this symbol will go through the global
7355 offset table. The dynamic linker will use the .dynsym entry to
7356 determine the address it must put in the global offset table, so
7357 both the dynamic object and the regular object will refer to the
7358 same memory location for the variable. */
5bd4f169 7359
04c9666a
AM		 7360 /* We must generate a R_PPC64_COPY reloc to tell the dynamic linker
7361 to copy the initial value out of the dynamic object and into the
5bd4f169
AM		 7362 runtime process image. We need to remember the offset into the
7363 .rela.bss section we are going to use. */
1d7e9d18 7364 if ((h->root.u.def.section->flags & SEC_ALLOC) != 0 && h->size != 0)
5bd4f169 7365 {
eea6121a 7366 htab->relbss->size += sizeof (Elf64_External_Rela);
f5385ebf 7367 h->needs_copy = 1;
5bd4f169
AM		 7368 }
7369
4ce794b7 7370 s = htab->dynbss;
5bd4f169 7371
6cabe1ea 7372 return _bfd_elf_adjust_dynamic_copy (info, h, s);
5bd4f169
AM		 7373}
7374
e86ce104
AM		 7375/* If given a function descriptor symbol, hide both the function code
7376 sym and the descriptor. */
7377static void
4ce794b7
AM		 7378ppc64_elf_hide_symbol (struct bfd_link_info *info,
7379 struct elf_link_hash_entry *h,
7380 bfd_boolean force_local)
e86ce104 7381{
34814b9f 7382 struct ppc_link_hash_entry *eh;
e86ce104
AM		 7383 _bfd_elf_link_hash_hide_symbol (info, h, force_local);
7384
34814b9f
AM		 7385 eh = (struct ppc_link_hash_entry *) h;
7386 if (eh->is_func_descriptor)
e86ce104 7387 {
34814b9f 7388 struct ppc_link_hash_entry *fh = eh->oh;
e86ce104 7389
721956f4 7390 if (fh == NULL)
d1329ca3
AM		 7391 {
7392 const char *p, *q;
7393 struct ppc_link_hash_table *htab;
7394 char save;
7395
7396 /* We aren't supposed to use alloca in BFD because on
7397 systems which do not have alloca the version in libiberty
7398 calls xmalloc, which might cause the program to crash
7399 when it runs out of memory. This function doesn't have a
7400 return status, so there's no way to gracefully return an
7401 error. So cheat. We know that string[-1] can be safely
34814b9f
AM		 7402 accessed; It's either a string in an ELF string table,
7403 or allocated in an objalloc structure. */
d1329ca3 7404
34814b9f 7405 p = eh->elf.root.root.string - 1;
d1329ca3
AM		 7406 save = *p;
7407 *(char *) p = '.';
7408 htab = ppc_hash_table (info);
4dfe6ac6
NC		 7409 if (htab == NULL)
7410 return;
7411
34814b9f
AM		 7412 fh = (struct ppc_link_hash_entry *)
7413 elf_link_hash_lookup (&htab->elf, p, FALSE, FALSE, FALSE);
d1329ca3
AM		 7414 *(char *) p = save;
7415
7416 /* Unfortunately, if it so happens that the string we were
7417 looking for was allocated immediately before this string,
7418 then we overwrote the string terminator. That's the only
7419 reason the lookup should fail. */
7420 if (fh == NULL)
7421 {
34814b9f
AM		 7422 q = eh->elf.root.root.string + strlen (eh->elf.root.root.string);
7423 while (q >= eh->elf.root.root.string && *q == *p)
d1329ca3 7424 --q, --p;
34814b9f
AM		 7425 if (q < eh->elf.root.root.string && *p == '.')
7426 fh = (struct ppc_link_hash_entry *)
7427 elf_link_hash_lookup (&htab->elf, p, FALSE, FALSE, FALSE);
d1329ca3
AM		 7428 }
7429 if (fh != NULL)
7430 {
34814b9f
AM		 7431 eh->oh = fh;
7432 fh->oh = eh;
d1329ca3
AM		 7433 }
7434 }
e86ce104 7435 if (fh != NULL)
34814b9f 7436 _bfd_elf_link_hash_hide_symbol (info, &fh->elf, force_local);
e86ce104
AM		 7437 }
7438}
7439
411e1bfb 7440static bfd_boolean
8843416a
AM		 7441get_sym_h (struct elf_link_hash_entry **hp,
7442 Elf_Internal_Sym **symp,
7443 asection **symsecp,
f961d9dd 7444 unsigned char **tls_maskp,
8843416a
AM		 7445 Elf_Internal_Sym **locsymsp,
7446 unsigned long r_symndx,
7447 bfd *ibfd)
411e1bfb 7448{
0ffa91dd 7449 Elf_Internal_Shdr *symtab_hdr = &elf_symtab_hdr (ibfd);
411e1bfb
AM		 7450
7451 if (r_symndx >= symtab_hdr->sh_info)
7452 {
7453 struct elf_link_hash_entry **sym_hashes = elf_sym_hashes (ibfd);
7454 struct elf_link_hash_entry *h;
7455
7456 h = sym_hashes[r_symndx - symtab_hdr->sh_info];
b31867b6 7457 h = elf_follow_link (h);
411e1bfb
AM		 7458
7459 if (hp != NULL)
7460 *hp = h;
7461
7462 if (symp != NULL)
7463 *symp = NULL;
7464
7465 if (symsecp != NULL)
7466 {
7467 asection *symsec = NULL;
7468 if (h->root.type == bfd_link_hash_defined
7469 || h->root.type == bfd_link_hash_defweak)
7470 symsec = h->root.u.def.section;
7471 *symsecp = symsec;
7472 }
7473
e7b938ca 7474 if (tls_maskp != NULL)
411e1bfb
AM		 7475 {
7476 struct ppc_link_hash_entry *eh;
7477
7478 eh = (struct ppc_link_hash_entry *) h;
e7b938ca 7479 *tls_maskp = &eh->tls_mask;
411e1bfb
AM		 7480 }
7481 }
7482 else
7483 {
7484 Elf_Internal_Sym *sym;
7485 Elf_Internal_Sym *locsyms = *locsymsp;
7486
7487 if (locsyms == NULL)
7488 {
7489 locsyms = (Elf_Internal_Sym *) symtab_hdr->contents;
7490 if (locsyms == NULL)
7491 locsyms = bfd_elf_get_elf_syms (ibfd, symtab_hdr,
7492 symtab_hdr->sh_info,
7493 0, NULL, NULL, NULL);
7494 if (locsyms == NULL)
7495 return FALSE;
7496 *locsymsp = locsyms;
7497 }
7498 sym = locsyms + r_symndx;
7499
7500 if (hp != NULL)
7501 *hp = NULL;
7502
7503 if (symp != NULL)
7504 *symp = sym;
7505
7506 if (symsecp != NULL)
cb33740c 7507 *symsecp = bfd_section_from_elf_index (ibfd, sym->st_shndx);
411e1bfb 7508
e7b938ca 7509 if (tls_maskp != NULL)
411e1bfb
AM		 7510 {
7511 struct got_entry **lgot_ents;
f961d9dd 7512 unsigned char *tls_mask;
411e1bfb 7513
e7b938ca 7514 tls_mask = NULL;
411e1bfb
AM		 7515 lgot_ents = elf_local_got_ents (ibfd);
7516 if (lgot_ents != NULL)
7517 {
e054468f
AM		 7518 struct plt_entry **local_plt = (struct plt_entry **)
7519 (lgot_ents + symtab_hdr->sh_info);
f961d9dd 7520 unsigned char *lgot_masks = (unsigned char *)
e054468f 7521 (local_plt + symtab_hdr->sh_info);
e7b938ca 7522 tls_mask = &lgot_masks[r_symndx];
411e1bfb 7523 }
e7b938ca 7524 *tls_maskp = tls_mask;
411e1bfb
AM		 7525 }
7526 }
7527 return TRUE;
7528}
7529
e7b938ca 7530/* Returns TLS_MASKP for the given REL symbol. Function return is 0 on
951fd09b 7531 error, 2 on a toc GD type suitable for optimization, 3 on a toc LD
ad8e1ba5 7532 type suitable for optimization, and 1 otherwise. */
951fd09b
AM		 7533
7534static int
f961d9dd 7535get_tls_mask (unsigned char **tls_maskp,
3a71aa26
AM		 7536 unsigned long *toc_symndx,
7537 bfd_vma *toc_addend,
0d4792f7 7538 Elf_Internal_Sym **locsymsp,
3a71aa26
AM		 7539 const Elf_Internal_Rela *rel,
7540 bfd *ibfd)
411e1bfb
AM		 7541{
7542 unsigned long r_symndx;
0d4792f7 7543 int next_r;
411e1bfb
AM		 7544 struct elf_link_hash_entry *h;
7545 Elf_Internal_Sym *sym;
7546 asection *sec;
7547 bfd_vma off;
7548
7549 r_symndx = ELF64_R_SYM (rel->r_info);
e7b938ca 7550 if (!get_sym_h (&h, &sym, &sec, tls_maskp, locsymsp, r_symndx, ibfd))
951fd09b 7551 return 0;
411e1bfb 7552
e7b938ca 7553 if ((*tls_maskp != NULL && **tls_maskp != 0)
411e1bfb 7554 || sec == NULL
6bee8834 7555 || ppc64_elf_section_data (sec) == NULL
7c8fe5c4 7556 || ppc64_elf_section_data (sec)->sec_type != sec_toc)
951fd09b 7557 return 1;
411e1bfb
AM		 7558
7559 /* Look inside a TOC section too. */
7560 if (h != NULL)
7561 {
7562 BFD_ASSERT (h->root.type == bfd_link_hash_defined);
7563 off = h->root.u.def.value;
7564 }
7565 else
7566 off = sym->st_value;
7567 off += rel->r_addend;
7568 BFD_ASSERT (off % 8 == 0);
3a71aa26
AM		 7569 r_symndx = ppc64_elf_section_data (sec)->u.toc.symndx[off / 8];
7570 next_r = ppc64_elf_section_data (sec)->u.toc.symndx[off / 8 + 1];
0d4792f7
AM		 7571 if (toc_symndx != NULL)
7572 *toc_symndx = r_symndx;
3a71aa26
AM		 7573 if (toc_addend != NULL)
7574 *toc_addend = ppc64_elf_section_data (sec)->u.toc.add[off / 8];
7575 if (!get_sym_h (&h, &sym, &sec, tls_maskp, locsymsp, r_symndx, ibfd))
7576 return 0;
854b41e7 7577 if ((h == NULL || is_static_defined (h))
0d4792f7
AM		 7578 && (next_r == -1 || next_r == -2))
7579 return 1 - next_r;
951fd09b 7580 return 1;
411e1bfb
AM		 7581}
7582
3b421ab3
AM		 7583/* Find (or create) an entry in the tocsave hash table. */
7584
7585static struct tocsave_entry *
7586tocsave_find (struct ppc_link_hash_table *htab,
7587 enum insert_option insert,
7588 Elf_Internal_Sym **local_syms,
7589 const Elf_Internal_Rela *irela,
7590 bfd *ibfd)
7591{
7592 unsigned long r_indx;
7593 struct elf_link_hash_entry *h;
7594 Elf_Internal_Sym *sym;
7595 struct tocsave_entry ent, *p;
7596 hashval_t hash;
7597 struct tocsave_entry **slot;
7598
7599 r_indx = ELF64_R_SYM (irela->r_info);
7600 if (!get_sym_h (&h, &sym, &ent.sec, NULL, local_syms, r_indx, ibfd))
7601 return NULL;
7602 if (ent.sec == NULL || ent.sec->output_section == NULL)
7603 {
4eca0228 7604 _bfd_error_handler
3b421ab3
AM		 7605 (_("%B: undefined symbol on R_PPC64_TOCSAVE relocation"));
7606 return NULL;
7607 }
7608
7609 if (h != NULL)
7610 ent.offset = h->root.u.def.value;
7611 else
7612 ent.offset = sym->st_value;
7613 ent.offset += irela->r_addend;
7614
7615 hash = tocsave_htab_hash (&ent);
7616 slot = ((struct tocsave_entry **)
7617 htab_find_slot_with_hash (htab->tocsave_htab, &ent, hash, insert));
7618 if (slot == NULL)
7619 return NULL;
7620
7621 if (*slot == NULL)
7622 {
7623 p = (struct tocsave_entry *) bfd_alloc (ibfd, sizeof (*p));
7624 if (p == NULL)
7625 return NULL;
7626 *p = ent;
7627 *slot = p;
7628 }
7629 return *slot;
7630}
7631
754021d0 7632/* Adjust all global syms defined in opd sections. In gcc generated
8387904d 7633 code for the old ABI, these will already have been done. */
754021d0
AM		 7634
7635static bfd_boolean
7636adjust_opd_syms (struct elf_link_hash_entry *h, void *inf ATTRIBUTE_UNUSED)
7637{
7638 struct ppc_link_hash_entry *eh;
7639 asection *sym_sec;
74f0fb50 7640 struct _opd_sec_data *opd;
754021d0
AM		 7641
7642 if (h->root.type == bfd_link_hash_indirect)
7643 return TRUE;
7644
754021d0
AM		 7645 if (h->root.type != bfd_link_hash_defined
7646 && h->root.type != bfd_link_hash_defweak)
7647 return TRUE;
7648
7649 eh = (struct ppc_link_hash_entry *) h;
7650 if (eh->adjust_done)
7651 return TRUE;
7652
7653 sym_sec = eh->elf.root.u.def.section;
74f0fb50
AM		 7654 opd = get_opd_info (sym_sec);
7655 if (opd != NULL && opd->adjust != NULL)
754021d0 7656 {
51aecdc5 7657 long adjust = opd->adjust[OPD_NDX (eh->elf.root.u.def.value)];
4025353c
AM		 7658 if (adjust == -1)
7659 {
7660 /* This entry has been deleted. */
b3fac117 7661 asection *dsec = ppc64_elf_tdata (sym_sec->owner)->deleted_section;
81688140
AM		 7662 if (dsec == NULL)
7663 {
7664 for (dsec = sym_sec->owner->sections; dsec; dsec = dsec->next)
dbaa2011 7665 if (discarded_section (dsec))
81688140 7666 {
b3fac117 7667 ppc64_elf_tdata (sym_sec->owner)->deleted_section = dsec;
81688140
AM		 7668 break;
7669 }
7670 }
4025353c 7671 eh->elf.root.u.def.value = 0;
81688140 7672 eh->elf.root.u.def.section = dsec;
4025353c
AM		 7673 }
7674 else
7675 eh->elf.root.u.def.value += adjust;
754021d0
AM		 7676 eh->adjust_done = 1;
7677 }
7678 return TRUE;
7679}
7680
8c1d1bb8 7681/* Handles decrementing dynamic reloc counts for the reloc specified by
19e08130 7682 R_INFO in section SEC. If LOCAL_SYMS is NULL, then H and SYM
8c1d1bb8
AM		 7683 have already been determined. */
7684
7685static bfd_boolean
7686dec_dynrel_count (bfd_vma r_info,
7687 asection *sec,
7688 struct bfd_link_info *info,
7689 Elf_Internal_Sym **local_syms,
7690 struct elf_link_hash_entry *h,
19e08130 7691 Elf_Internal_Sym *sym)
8c1d1bb8
AM		 7692{
7693 enum elf_ppc64_reloc_type r_type;
19e08130 7694 asection *sym_sec = NULL;
8c1d1bb8
AM		 7695
7696 /* Can this reloc be dynamic? This switch, and later tests here
7697 should be kept in sync with the code in check_relocs. */
7698 r_type = ELF64_R_TYPE (r_info);
7699 switch (r_type)
7700 {
7701 default:
7702 return TRUE;
7703
7704 case R_PPC64_TPREL16:
7705 case R_PPC64_TPREL16_LO:
7706 case R_PPC64_TPREL16_HI:
7707 case R_PPC64_TPREL16_HA:
7708 case R_PPC64_TPREL16_DS:
7709 case R_PPC64_TPREL16_LO_DS:
f9c6b907
AM		 7710 case R_PPC64_TPREL16_HIGH:
7711 case R_PPC64_TPREL16_HIGHA:
8c1d1bb8
AM		 7712 case R_PPC64_TPREL16_HIGHER:
7713 case R_PPC64_TPREL16_HIGHERA:
7714 case R_PPC64_TPREL16_HIGHEST:
7715 case R_PPC64_TPREL16_HIGHESTA:
0e1862bb 7716 if (!bfd_link_pic (info))
8c1d1bb8
AM		 7717 return TRUE;
7718
7719 case R_PPC64_TPREL64:
7720 case R_PPC64_DTPMOD64:
7721 case R_PPC64_DTPREL64:
7722 case R_PPC64_ADDR64:
7723 case R_PPC64_REL30:
7724 case R_PPC64_REL32:
7725 case R_PPC64_REL64:
7726 case R_PPC64_ADDR14:
7727 case R_PPC64_ADDR14_BRNTAKEN:
7728 case R_PPC64_ADDR14_BRTAKEN:
7729 case R_PPC64_ADDR16:
7730 case R_PPC64_ADDR16_DS:
7731 case R_PPC64_ADDR16_HA:
7732 case R_PPC64_ADDR16_HI:
f9c6b907
AM		 7733 case R_PPC64_ADDR16_HIGH:
7734 case R_PPC64_ADDR16_HIGHA:
8c1d1bb8
AM		 7735 case R_PPC64_ADDR16_HIGHER:
7736 case R_PPC64_ADDR16_HIGHERA:
7737 case R_PPC64_ADDR16_HIGHEST:
7738 case R_PPC64_ADDR16_HIGHESTA:
7739 case R_PPC64_ADDR16_LO:
7740 case R_PPC64_ADDR16_LO_DS:
7741 case R_PPC64_ADDR24:
7742 case R_PPC64_ADDR32:
7743 case R_PPC64_UADDR16:
7744 case R_PPC64_UADDR32:
7745 case R_PPC64_UADDR64:
7746 case R_PPC64_TOC:
7747 break;
7748 }
7749
7750 if (local_syms != NULL)
7751 {
7752 unsigned long r_symndx;
8c1d1bb8
AM		 7753 bfd *ibfd = sec->owner;
7754
7755 r_symndx = ELF64_R_SYM (r_info);
7756 if (!get_sym_h (&h, &sym, &sym_sec, NULL, local_syms, r_symndx, ibfd))
7757 return FALSE;
7758 }
7759
0e1862bb 7760 if ((bfd_link_pic (info)
1d483afe 7761 && (must_be_dyn_reloc (info, r_type)
8c1d1bb8 7762 || (h != NULL
198f1157 7763 && (!SYMBOLIC_BIND (info, h)
8c1d1bb8
AM		 7764 || h->root.type == bfd_link_hash_defweak
7765 || !h->def_regular))))
7766 || (ELIMINATE_COPY_RELOCS
0e1862bb 7767 && !bfd_link_pic (info)
8c1d1bb8
AM		 7768 && h != NULL
7769 && (h->root.type == bfd_link_hash_defweak
7770 || !h->def_regular)))
7771 ;
7772 else
7773 return TRUE;
7774
7775 if (h != NULL)
6edfbbad 7776 {
19e08130
AM		 7777 struct elf_dyn_relocs *p;
7778 struct elf_dyn_relocs **pp;
7779 pp = &((struct ppc_link_hash_entry *) h)->dyn_relocs;
7780
7781 /* elf_gc_sweep may have already removed all dyn relocs associated
7782 with local syms for a given section. Also, symbol flags are
7783 changed by elf_gc_sweep_symbol, confusing the test above. Don't
7784 report a dynreloc miscount. */
7785 if (*pp == NULL && info->gc_sections)
7786 return TRUE;
7787
7788 while ((p = *pp) != NULL)
60124e18 7789 {
19e08130
AM		 7790 if (p->sec == sec)
7791 {
7792 if (!must_be_dyn_reloc (info, r_type))
7793 p->pc_count -= 1;
7794 p->count -= 1;
7795 if (p->count == 0)
7796 *pp = p->next;
7797 return TRUE;
7798 }
7799 pp = &p->next;
60124e18 7800 }
6edfbbad 7801 }
19e08130
AM		 7802 else
7803 {
7804 struct ppc_dyn_relocs *p;
7805 struct ppc_dyn_relocs **pp;
7806 void *vpp;
7807 bfd_boolean is_ifunc;
8c1d1bb8 7808
19e08130
AM		 7809 if (local_syms == NULL)
7810 sym_sec = bfd_section_from_elf_index (sec->owner, sym->st_shndx);
7811 if (sym_sec == NULL)
7812 sym_sec = sec;
c57da1a7 7813
19e08130
AM		 7814 vpp = &elf_section_data (sym_sec)->local_dynrel;
7815 pp = (struct ppc_dyn_relocs **) vpp;
7816
7817 if (*pp == NULL && info->gc_sections)
7818 return TRUE;
7819
7820 is_ifunc = ELF_ST_TYPE (sym->st_info) == STT_GNU_IFUNC;
7821 while ((p = *pp) != NULL)
8c1d1bb8 7822 {
19e08130
AM		 7823 if (p->sec == sec && p->ifunc == is_ifunc)
7824 {
7825 p->count -= 1;
7826 if (p->count == 0)
7827 *pp = p->next;
7828 return TRUE;
7829 }
7830 pp = &p->next;
8c1d1bb8 7831 }
8c1d1bb8
AM		 7832 }
7833
8de848d8 7834 info->callbacks->einfo (_("%P: dynreloc miscount for %B, section %A\n"),
25f53a85 7835 sec->owner, sec);
8c1d1bb8
AM		 7836 bfd_set_error (bfd_error_bad_value);
7837 return FALSE;
7838}
7839
754021d0
AM		 7840/* Remove unused Official Procedure Descriptor entries. Currently we
7841 only remove those associated with functions in discarded link-once
7842 sections, or weakly defined functions that have been overridden. It
7843 would be possible to remove many more entries for statically linked
7844 applications. */
7845
b34976b6 7846bfd_boolean
e7d1c40c 7847ppc64_elf_edit_opd (struct bfd_link_info *info)
1e2f5b6e
AM		 7848{
7849 bfd *ibfd;
754021d0 7850 bfd_boolean some_edited = FALSE;
3f764659 7851 asection *need_pad = NULL;
e7d1c40c
AM		 7852 struct ppc_link_hash_table *htab;
7853
7854 htab = ppc_hash_table (info);
7855 if (htab == NULL)
7856 return FALSE;
1e2f5b6e 7857
c72f2fb2 7858 for (ibfd = info->input_bfds; ibfd != NULL; ibfd = ibfd->link.next)
1e2f5b6e
AM		 7859 {
7860 asection *sec;
7861 Elf_Internal_Rela *relstart, *rel, *relend;
7862 Elf_Internal_Shdr *symtab_hdr;
6cdc0ccc 7863 Elf_Internal_Sym *local_syms;
74f0fb50 7864 struct _opd_sec_data *opd;
51aecdc5 7865 bfd_boolean need_edit, add_aux_fields, broken;
3f764659 7866 bfd_size_type cnt_16b = 0;
1e2f5b6e 7867
854b41e7
AM		 7868 if (!is_ppc64_elf (ibfd))
7869 continue;
7870
1e2f5b6e 7871 sec = bfd_get_section_by_name (ibfd, ".opd");
46de2a7c 7872 if (sec == NULL || sec->size == 0)
1e2f5b6e
AM		 7873 continue;
7874
dbaa2011 7875 if (sec->sec_info_type == SEC_INFO_TYPE_JUST_SYMS)
4b85d634
AM		 7876 continue;
7877
1e2f5b6e
AM		 7878 if (sec->output_section == bfd_abs_section_ptr)
7879 continue;
7880
7881 /* Look through the section relocs. */
7882 if ((sec->flags & SEC_RELOC) == 0 || sec->reloc_count == 0)
7883 continue;
7884
6cdc0ccc 7885 local_syms = NULL;
0ffa91dd 7886 symtab_hdr = &elf_symtab_hdr (ibfd);
1e2f5b6e
AM		 7887
7888 /* Read the relocations. */
4ce794b7 7889 relstart = _bfd_elf_link_read_relocs (ibfd, sec, NULL, NULL,
45d6a902 7890 info->keep_memory);
1e2f5b6e 7891 if (relstart == NULL)
b34976b6 7892 return FALSE;
1e2f5b6e
AM		 7893
7894 /* First run through the relocs to check they are sane, and to
7895 determine whether we need to edit this opd section. */
b34976b6 7896 need_edit = FALSE;
51aecdc5 7897 broken = FALSE;
3f764659 7898 need_pad = sec;
1e2f5b6e 7899 relend = relstart + sec->reloc_count;
50bc7936 7900 for (rel = relstart; rel < relend; )
1e2f5b6e 7901 {
04c9666a 7902 enum elf_ppc64_reloc_type r_type;
1e2f5b6e
AM		 7903 unsigned long r_symndx;
7904 asection *sym_sec;
7905 struct elf_link_hash_entry *h;
7906 Elf_Internal_Sym *sym;
51aecdc5 7907 bfd_vma offset;
1e2f5b6e 7908
51aecdc5 7909 /* .opd contains an array of 16 or 24 byte entries. We're
1e2f5b6e
AM		 7910 only interested in the reloc pointing to a function entry
7911 point. */
51aecdc5
AM		 7912 offset = rel->r_offset;
7913 if (rel + 1 == relend
7914 || rel[1].r_offset != offset + 8)
1e2f5b6e
AM		 7915 {
7916 /* If someone messes with .opd alignment then after a
7917 "ld -r" we might have padding in the middle of .opd.
7918 Also, there's nothing to prevent someone putting
7919 something silly in .opd with the assembler. No .opd
b34976b6 7920 optimization for them! */
3f764659 7921 broken_opd:
4eca0228 7922 _bfd_error_handler
d003868e 7923 (_("%B: .opd is not a regular array of opd entries"), ibfd);
51aecdc5 7924 broken = TRUE;
1e2f5b6e
AM		 7925 break;
7926 }
7927
50bc7936
AM		 7928 if ((r_type = ELF64_R_TYPE (rel->r_info)) != R_PPC64_ADDR64
7929 || (r_type = ELF64_R_TYPE ((rel + 1)->r_info)) != R_PPC64_TOC)
7930 {
4eca0228 7931 _bfd_error_handler
d003868e
AM		 7932 (_("%B: unexpected reloc type %u in .opd section"),
7933 ibfd, r_type);
51aecdc5 7934 broken = TRUE;
50bc7936
AM		 7935 break;
7936 }
7937
1e2f5b6e 7938 r_symndx = ELF64_R_SYM (rel->r_info);
411e1bfb
AM		 7939 if (!get_sym_h (&h, &sym, &sym_sec, NULL, &local_syms,
7940 r_symndx, ibfd))
50bc7936 7941 goto error_ret;
1e2f5b6e
AM		 7942
7943 if (sym_sec == NULL || sym_sec->owner == NULL)
7944 {
411e1bfb
AM		 7945 const char *sym_name;
7946 if (h != NULL)
7947 sym_name = h->root.root.string;
7948 else
26c61ae5
L		 7949 sym_name = bfd_elf_sym_name (ibfd, symtab_hdr, sym,
7950 sym_sec);
411e1bfb 7951
4eca0228 7952 _bfd_error_handler
d003868e
AM		 7953 (_("%B: undefined sym `%s' in .opd section"),
7954 ibfd, sym_name);
51aecdc5 7955 broken = TRUE;
1e2f5b6e
AM		 7956 break;
7957 }
7958
51020317
AM		 7959 /* opd entries are always for functions defined in the
7960 current input bfd. If the symbol isn't defined in the
7961 input bfd, then we won't be using the function in this
7962 bfd; It must be defined in a linkonce section in another
7963 bfd, or is weak. It's also possible that we are
7964 discarding the function due to a linker script /DISCARD/,
7965 which we test for via the output_section. */
7966 if (sym_sec->owner != ibfd
7967 || sym_sec->output_section == bfd_abs_section_ptr)
b34976b6 7968 need_edit = TRUE;
1e2f5b6e 7969
50bc7936 7970 rel += 2;
51aecdc5
AM		 7971 if (rel + 1 == relend
7972 || (rel + 2 < relend
7973 && ELF64_R_TYPE (rel[2].r_info) == R_PPC64_TOC))
7974 ++rel;
7975
7976 if (rel == relend)
3f764659
JJ		 7977 {
7978 if (sec->size == offset + 24)
7979 {
7980 need_pad = NULL;
7981 break;
7982 }
51aecdc5 7983 if (sec->size == offset + 16)
3f764659
JJ		 7984 {
7985 cnt_16b++;
7986 break;
7987 }
7988 goto broken_opd;
7989 }
3f764659
JJ		 7990 else if (rel + 1 < relend
7991 && ELF64_R_TYPE (rel[0].r_info) == R_PPC64_ADDR64
7992 && ELF64_R_TYPE (rel[1].r_info) == R_PPC64_TOC)
7993 {
51aecdc5
AM		 7994 if (rel[0].r_offset == offset + 16)
7995 cnt_16b++;
7996 else if (rel[0].r_offset != offset + 24)
7997 goto broken_opd;
3f764659
JJ		 7998 }
7999 else
8000 goto broken_opd;
1e2f5b6e
AM		 8001 }
8002
e7d1c40c 8003 add_aux_fields = htab->params->non_overlapping_opd && cnt_16b > 0;
3f764659 8004
51aecdc5 8005 if (!broken && (need_edit || add_aux_fields))
1e2f5b6e
AM		 8006 {
8007 Elf_Internal_Rela *write_rel;
d4730f92 8008 Elf_Internal_Shdr *rel_hdr;
1e2f5b6e 8009 bfd_byte *rptr, *wptr;
983bddc8 8010 bfd_byte *new_contents;
74f0fb50
AM		 8011 bfd_size_type amt;
8012
983bddc8 8013 new_contents = NULL;
51aecdc5 8014 amt = OPD_NDX (sec->size) * sizeof (long);
74f0fb50 8015 opd = &ppc64_elf_section_data (sec)->u.opd;
33c0ec9d 8016 opd->adjust = bfd_zalloc (sec->owner, amt);
74f0fb50
AM		 8017 if (opd->adjust == NULL)
8018 return FALSE;
8019 ppc64_elf_section_data (sec)->sec_type = sec_opd;
1e2f5b6e
AM		 8020
8021 /* This seems a waste of time as input .opd sections are all
8022 zeros as generated by gcc, but I suppose there's no reason
8023 this will always be so. We might start putting something in
8024 the third word of .opd entries. */
8025 if ((sec->flags & SEC_IN_MEMORY) == 0)
8026 {
eea6121a
AM		 8027 bfd_byte *loc;
8028 if (!bfd_malloc_and_get_section (ibfd, sec, &loc))
6cdc0ccc 8029 {
eea6121a
AM		 8030 if (loc != NULL)
8031 free (loc);
50bc7936 8032 error_ret:
6cdc0ccc
AM		 8033 if (local_syms != NULL
8034 && symtab_hdr->contents != (unsigned char *) local_syms)
8035 free (local_syms);
6cdc0ccc
AM		 8036 if (elf_section_data (sec)->relocs != relstart)
8037 free (relstart);
b34976b6 8038 return FALSE;
6cdc0ccc 8039 }
1e2f5b6e
AM		 8040 sec->contents = loc;
8041 sec->flags |= (SEC_IN_MEMORY | SEC_HAS_CONTENTS);
8042 }
8043
8044 elf_section_data (sec)->relocs = relstart;
8045
3f764659 8046 new_contents = sec->contents;
3f764659
JJ		 8047 if (add_aux_fields)
8048 {
8049 new_contents = bfd_malloc (sec->size + cnt_16b * 8);
8050 if (new_contents == NULL)
8051 return FALSE;
51aecdc5 8052 need_pad = NULL;
3f764659 8053 }
b4f4e59f
AM		 8054 wptr = new_contents;
8055 rptr = sec->contents;
1e2f5b6e 8056 write_rel = relstart;
51aecdc5 8057 for (rel = relstart; rel < relend; )
1e2f5b6e 8058 {
50bc7936
AM		 8059 unsigned long r_symndx;
8060 asection *sym_sec;
8061 struct elf_link_hash_entry *h;
51aecdc5 8062 struct ppc_link_hash_entry *fdh = NULL;
50bc7936 8063 Elf_Internal_Sym *sym;
51aecdc5
AM		 8064 long opd_ent_size;
8065 Elf_Internal_Rela *next_rel;
8066 bfd_boolean skip;
50bc7936
AM		 8067
8068 r_symndx = ELF64_R_SYM (rel->r_info);
8069 if (!get_sym_h (&h, &sym, &sym_sec, NULL, &local_syms,
d37c89e5 8070 r_symndx, ibfd))
50bc7936
AM		 8071 goto error_ret;
8072
51aecdc5
AM		 8073 next_rel = rel + 2;
8074 if (next_rel + 1 == relend
8075 || (next_rel + 2 < relend
8076 && ELF64_R_TYPE (next_rel[2].r_info) == R_PPC64_TOC))
8077 ++next_rel;
8078
8079 /* See if the .opd entry is full 24 byte or
8080 16 byte (with fd_aux entry overlapped with next
8081 fd_func). */
8082 opd_ent_size = 24;
8083 if (next_rel == relend)
1e2f5b6e 8084 {
51aecdc5 8085 if (sec->size == rel->r_offset + 16)
3f764659 8086 opd_ent_size = 16;
51aecdc5
AM		 8087 }
8088 else if (next_rel->r_offset == rel->r_offset + 16)
8089 opd_ent_size = 16;
3f764659 8090
51aecdc5
AM		 8091 if (h != NULL
8092 && h->root.root.string[0] == '.')
8093 {
8094 fdh = lookup_fdh ((struct ppc_link_hash_entry *) h, htab);
8095 if (fdh != NULL
8096 && fdh->elf.root.type != bfd_link_hash_defined
8097 && fdh->elf.root.type != bfd_link_hash_defweak)
8098 fdh = NULL;
8099 }
1e2f5b6e 8100
51aecdc5
AM		 8101 skip = (sym_sec->owner != ibfd
8102 || sym_sec->output_section == bfd_abs_section_ptr);
8103 if (skip)
8104 {
8105 if (fdh != NULL && sym_sec->owner == ibfd)
a4aa0fb7 8106 {
51aecdc5
AM		 8107 /* Arrange for the function descriptor sym
8108 to be dropped. */
8109 fdh->elf.root.u.def.value = 0;
8110 fdh->elf.root.u.def.section = sym_sec;
a4aa0fb7 8111 }
51aecdc5 8112 opd->adjust[OPD_NDX (rel->r_offset)] = -1;
1e2f5b6e 8113
0e1862bb 8114 if (NO_OPD_RELOCS || bfd_link_relocatable (info))
51aecdc5
AM		 8115 rel = next_rel;
8116 else
8117 while (1)
8118 {
8119 if (!dec_dynrel_count (rel->r_info, sec, info,
8120 NULL, h, sym))
8121 goto error_ret;
754021d0 8122
51aecdc5
AM		 8123 if (++rel == next_rel)
8124 break;
1e2f5b6e 8125
51aecdc5
AM		 8126 r_symndx = ELF64_R_SYM (rel->r_info);
8127 if (!get_sym_h (&h, &sym, &sym_sec, NULL, &local_syms,
8128 r_symndx, ibfd))
8129 goto error_ret;
8130 }
50bc7936
AM		 8131 }
8132 else
1e2f5b6e 8133 {
51aecdc5
AM		 8134 /* We'll be keeping this opd entry. */
8135 long adjust;
8136
8137 if (fdh != NULL)
8138 {
8139 /* Redefine the function descriptor symbol to
8140 this location in the opd section. It is
8141 necessary to update the value here rather
8142 than using an array of adjustments as we do
8143 for local symbols, because various places
8144 in the generic ELF code use the value
8145 stored in u.def.value. */
8146 fdh->elf.root.u.def.value = wptr - new_contents;
8147 fdh->adjust_done = 1;
8148 }
8149
8150 /* Local syms are a bit tricky. We could
8151 tweak them as they can be cached, but
8152 we'd need to look through the local syms
8153 for the function descriptor sym which we
8154 don't have at the moment. So keep an
8155 array of adjustments. */
8156 adjust = (wptr - new_contents) - (rptr - sec->contents);
8157 opd->adjust[OPD_NDX (rel->r_offset)] = adjust;
8158
8159 if (wptr != rptr)
8160 memcpy (wptr, rptr, opd_ent_size);
8161 wptr += opd_ent_size;
8162 if (add_aux_fields && opd_ent_size == 16)
8163 {
8164 memset (wptr, '\0', 8);
8165 wptr += 8;
8166 }
8167
50bc7936 8168 /* We need to adjust any reloc offsets to point to the
51aecdc5
AM		 8169 new opd entries. */
8170 for ( ; rel != next_rel; ++rel)
8171 {
8172 rel->r_offset += adjust;
8173 if (write_rel != rel)
8174 memcpy (write_rel, rel, sizeof (*rel));
8175 ++write_rel;
8176 }
1e2f5b6e 8177 }
51aecdc5
AM		 8178
8179 rptr += opd_ent_size;
1e2f5b6e
AM		 8180 }
8181
3f764659 8182 sec->size = wptr - new_contents;
1e2f5b6e 8183 sec->reloc_count = write_rel - relstart;
3f764659
JJ		 8184 if (add_aux_fields)
8185 {
8186 free (sec->contents);
8187 sec->contents = new_contents;
8188 }
8189
05bf9422 8190 /* Fudge the header size too, as this is used later in
cdcf6e38 8191 elf_bfd_final_link if we are emitting relocs. */
d4730f92
BS		 8192 rel_hdr = _bfd_elf_single_rel_hdr (sec);
8193 rel_hdr->sh_size = sec->reloc_count * rel_hdr->sh_entsize;
754021d0 8194 some_edited = TRUE;
1e2f5b6e 8195 }
6cdc0ccc 8196 else if (elf_section_data (sec)->relocs != relstart)
1e2f5b6e 8197 free (relstart);
6cdc0ccc 8198
411e1bfb
AM		 8199 if (local_syms != NULL
8200 && symtab_hdr->contents != (unsigned char *) local_syms)
8201 {
8202 if (!info->keep_memory)
8203 free (local_syms);
8204 else
8205 symtab_hdr->contents = (unsigned char *) local_syms;
8206 }
8207 }
8208
754021d0
AM		 8209 if (some_edited)
8210 elf_link_hash_traverse (elf_hash_table (info), adjust_opd_syms, NULL);
8211
3f764659
JJ		 8212 /* If we are doing a final link and the last .opd entry is just 16 byte
8213 long, add a 8 byte padding after it. */
0e1862bb 8214 if (need_pad != NULL && !bfd_link_relocatable (info))
3f764659
JJ		 8215 {
8216 bfd_byte *p;
8217
8218 if ((need_pad->flags & SEC_IN_MEMORY) == 0)
8219 {
8220 BFD_ASSERT (need_pad->size > 0);
8221
8222 p = bfd_malloc (need_pad->size + 8);
8223 if (p == NULL)
8224 return FALSE;
699733f6 8225
3f764659
JJ		 8226 if (! bfd_get_section_contents (need_pad->owner, need_pad,
8227 p, 0, need_pad->size))
8228 return FALSE;
8229
8230 need_pad->contents = p;
8231 need_pad->flags |= (SEC_IN_MEMORY | SEC_HAS_CONTENTS);
8232 }
8233 else
8234 {
8235 p = bfd_realloc (need_pad->contents, need_pad->size + 8);
8236 if (p == NULL)
8237 return FALSE;
8238
8239 need_pad->contents = p;
8240 }
8241
8242 memset (need_pad->contents + need_pad->size, 0, 8);
8243 need_pad->size += 8;
8244 }
8245
411e1bfb
AM		 8246 return TRUE;
8247}
8248
e1918d23 8249/* Set htab->tls_get_addr and call the generic ELF tls_setup function. */
411e1bfb 8250
e1918d23 8251asection *
e7d1c40c 8252ppc64_elf_tls_setup (struct bfd_link_info *info)
411e1bfb 8253{
411e1bfb
AM		 8254 struct ppc_link_hash_table *htab;
8255
411e1bfb 8256 htab = ppc_hash_table (info);
4dfe6ac6
NC		 8257 if (htab == NULL)
8258 return NULL;
8259
ee67d69a
AM		 8260 if (abiversion (info->output_bfd) == 1)
8261 htab->opd_abi = 1;
8262
e7d1c40c 8263 if (htab->params->no_multi_toc)
33c0ec9d
AM		 8264 htab->do_multi_toc = 0;
8265 else if (!htab->do_multi_toc)
e7d1c40c 8266 htab->params->no_multi_toc = 1;
33c0ec9d 8267
3a71aa26
AM		 8268 htab->tls_get_addr = ((struct ppc_link_hash_entry *)
8269 elf_link_hash_lookup (&htab->elf, ".__tls_get_addr",
8270 FALSE, FALSE, TRUE));
a7f2871e
AM		 8271 /* Move dynamic linking info to the function descriptor sym. */
8272 if (htab->tls_get_addr != NULL)
8273 func_desc_adjust (&htab->tls_get_addr->elf, info);
3a71aa26
AM		 8274 htab->tls_get_addr_fd = ((struct ppc_link_hash_entry *)
8275 elf_link_hash_lookup (&htab->elf, "__tls_get_addr",
8276 FALSE, FALSE, TRUE));
7c9cf415 8277 if (htab->params->tls_get_addr_opt)
a7f2871e
AM		 8278 {
8279 struct elf_link_hash_entry *opt, *opt_fd, *tga, *tga_fd;
8280
8281 opt = elf_link_hash_lookup (&htab->elf, ".__tls_get_addr_opt",
8282 FALSE, FALSE, TRUE);
8283 if (opt != NULL)
8284 func_desc_adjust (opt, info);
8285 opt_fd = elf_link_hash_lookup (&htab->elf, "__tls_get_addr_opt",
8286 FALSE, FALSE, TRUE);
8287 if (opt_fd != NULL
8288 && (opt_fd->root.type == bfd_link_hash_defined
8289 || opt_fd->root.type == bfd_link_hash_defweak))
8290 {
8291 /* If glibc supports an optimized __tls_get_addr call stub,
8292 signalled by the presence of __tls_get_addr_opt, and we'll
8293 be calling __tls_get_addr via a plt call stub, then
8294 make __tls_get_addr point to __tls_get_addr_opt. */
8295 tga_fd = &htab->tls_get_addr_fd->elf;
8296 if (htab->elf.dynamic_sections_created
8297 && tga_fd != NULL
8298 && (tga_fd->type == STT_FUNC
8299 || tga_fd->needs_plt)
8300 && !(SYMBOL_CALLS_LOCAL (info, tga_fd)
8301 || (ELF_ST_VISIBILITY (tga_fd->other) != STV_DEFAULT
8302 && tga_fd->root.type == bfd_link_hash_undefweak)))
8303 {
8304 struct plt_entry *ent;
8305
8306 for (ent = tga_fd->plt.plist; ent != NULL; ent = ent->next)
8307 if (ent->plt.refcount > 0)
8308 break;
8309 if (ent != NULL)
8310 {
8311 tga_fd->root.type = bfd_link_hash_indirect;
8312 tga_fd->root.u.i.link = &opt_fd->root;
8313 ppc64_elf_copy_indirect_symbol (info, opt_fd, tga_fd);
3bd43ebc 8314 opt_fd->forced_local = 0;
a7f2871e
AM		 8315 if (opt_fd->dynindx != -1)
8316 {
8317 /* Use __tls_get_addr_opt in dynamic relocations. */
8318 opt_fd->dynindx = -1;
8319 _bfd_elf_strtab_delref (elf_hash_table (info)->dynstr,
8320 opt_fd->dynstr_index);
8321 if (!bfd_elf_link_record_dynamic_symbol (info, opt_fd))
854b41e7 8322 return NULL;
a7f2871e
AM		 8323 }
8324 htab->tls_get_addr_fd = (struct ppc_link_hash_entry *) opt_fd;
8325 tga = &htab->tls_get_addr->elf;
8326 if (opt != NULL && tga != NULL)
8327 {
8328 tga->root.type = bfd_link_hash_indirect;
8329 tga->root.u.i.link = &opt->root;
8330 ppc64_elf_copy_indirect_symbol (info, opt, tga);
3bd43ebc 8331 opt->forced_local = 0;
a7f2871e
AM		 8332 _bfd_elf_link_hash_hide_symbol (info, opt,
8333 tga->forced_local);
8334 htab->tls_get_addr = (struct ppc_link_hash_entry *) opt;
8335 }
8336 htab->tls_get_addr_fd->oh = htab->tls_get_addr;
8337 htab->tls_get_addr_fd->is_func_descriptor = 1;
8338 if (htab->tls_get_addr != NULL)
8339 {
8340 htab->tls_get_addr->oh = htab->tls_get_addr_fd;
8341 htab->tls_get_addr->is_func = 1;
8342 }
8343 }
8344 }
8345 }
7c9cf415
AM		 8346 else if (htab->params->tls_get_addr_opt < 0)
8347 htab->params->tls_get_addr_opt = 0;
a7f2871e 8348 }
33c0ec9d 8349 return _bfd_elf_tls_setup (info->output_bfd, info);
3a71aa26 8350}
8387904d 8351
3a71aa26
AM		 8352/* Return TRUE iff REL is a branch reloc with a global symbol matching
8353 HASH1 or HASH2. */
8387904d 8354
3a71aa26
AM		 8355static bfd_boolean
8356branch_reloc_hash_match (const bfd *ibfd,
8357 const Elf_Internal_Rela *rel,
8358 const struct ppc_link_hash_entry *hash1,
8359 const struct ppc_link_hash_entry *hash2)
8360{
8361 Elf_Internal_Shdr *symtab_hdr = &elf_symtab_hdr (ibfd);
8362 enum elf_ppc64_reloc_type r_type = ELF64_R_TYPE (rel->r_info);
8363 unsigned int r_symndx = ELF64_R_SYM (rel->r_info);
8364
e054468f 8365 if (r_symndx >= symtab_hdr->sh_info && is_branch_reloc (r_type))
8387904d 8366 {
3a71aa26
AM		 8367 struct elf_link_hash_entry **sym_hashes = elf_sym_hashes (ibfd);
8368 struct elf_link_hash_entry *h;
8387904d 8369
3a71aa26 8370 h = sym_hashes[r_symndx - symtab_hdr->sh_info];
b31867b6 8371 h = elf_follow_link (h);
3a71aa26
AM		 8372 if (h == &hash1->elf || h == &hash2->elf)
8373 return TRUE;
a48ebf4d 8374 }
3a71aa26 8375 return FALSE;
951fd09b 8376}
411e1bfb 8377
951fd09b
AM		 8378/* Run through all the TLS relocs looking for optimization
8379 opportunities. The linker has been hacked (see ppc64elf.em) to do
8380 a preliminary section layout so that we know the TLS segment
8381 offsets. We can't optimize earlier because some optimizations need
8382 to know the tp offset, and we need to optimize before allocating
8383 dynamic relocations. */
8384
8385bfd_boolean
33c0ec9d 8386ppc64_elf_tls_optimize (struct bfd_link_info *info)
951fd09b
AM		 8387{
8388 bfd *ibfd;
8389 asection *sec;
8390 struct ppc_link_hash_table *htab;
663a1470 8391 unsigned char *toc_ref;
102890f0 8392 int pass;
951fd09b 8393
3cbc1e5e 8394 if (!bfd_link_executable (info))
411e1bfb
AM		 8395 return TRUE;
8396
951fd09b 8397 htab = ppc_hash_table (info);
4dfe6ac6
NC		 8398 if (htab == NULL)
8399 return FALSE;
8400
663a1470
AM		 8401 /* Make two passes over the relocs. On the first pass, mark toc
8402 entries involved with tls relocs, and check that tls relocs
8403 involved in setting up a tls_get_addr call are indeed followed by
8404 such a call. If they are not, we can't do any tls optimization.
8405 On the second pass twiddle tls_mask flags to notify
8406 relocate_section that optimization can be done, and adjust got
8407 and plt refcounts. */
8408 toc_ref = NULL;
8409 for (pass = 0; pass < 2; ++pass)
c72f2fb2 8410 for (ibfd = info->input_bfds; ibfd != NULL; ibfd = ibfd->link.next)
663a1470
AM		 8411 {
8412 Elf_Internal_Sym *locsyms = NULL;
8413 asection *toc = bfd_get_section_by_name (ibfd, ".toc");
8414
102890f0
AM		 8415 for (sec = ibfd->sections; sec != NULL; sec = sec->next)
8416 if (sec->has_tls_reloc && !bfd_is_abs_section (sec->output_section))
8417 {
8418 Elf_Internal_Rela *relstart, *rel, *relend;
663a1470 8419 bfd_boolean found_tls_get_addr_arg = 0;
411e1bfb 8420
102890f0
AM		 8421 /* Read the relocations. */
8422 relstart = _bfd_elf_link_read_relocs (ibfd, sec, NULL, NULL,
8423 info->keep_memory);
8424 if (relstart == NULL)
2915c55b
JK		 8425 {
8426 free (toc_ref);
8427 return FALSE;
8428 }
411e1bfb 8429
102890f0
AM		 8430 relend = relstart + sec->reloc_count;
8431 for (rel = relstart; rel < relend; rel++)
8432 {
8433 enum elf_ppc64_reloc_type r_type;
8434 unsigned long r_symndx;
8435 struct elf_link_hash_entry *h;
8436 Elf_Internal_Sym *sym;
8437 asection *sym_sec;
f961d9dd
AM		 8438 unsigned char *tls_mask;
8439 unsigned char tls_set, tls_clear, tls_type = 0;
102890f0
AM		 8440 bfd_vma value;
8441 bfd_boolean ok_tprel, is_local;
8442 long toc_ref_index = 0;
8443 int expecting_tls_get_addr = 0;
663a1470 8444 bfd_boolean ret = FALSE;
411e1bfb 8445
102890f0
AM		 8446 r_symndx = ELF64_R_SYM (rel->r_info);
8447 if (!get_sym_h (&h, &sym, &sym_sec, &tls_mask, &locsyms,
8448 r_symndx, ibfd))
8449 {
8450 err_free_rel:
8451 if (elf_section_data (sec)->relocs != relstart)
8452 free (relstart);
8453 if (toc_ref != NULL)
8454 free (toc_ref);
8455 if (locsyms != NULL
0ffa91dd 8456 && (elf_symtab_hdr (ibfd).contents
102890f0
AM		 8457 != (unsigned char *) locsyms))
8458 free (locsyms);
663a1470 8459 return ret;
102890f0 8460 }
411e1bfb 8461
102890f0
AM		 8462 if (h != NULL)
8463 {
766bc656
AM		 8464 if (h->root.type == bfd_link_hash_defined
8465 || h->root.type == bfd_link_hash_defweak)
8466 value = h->root.u.def.value;
8467 else if (h->root.type == bfd_link_hash_undefweak)
8468 value = 0;
8469 else
663a1470
AM		 8470 {
8471 found_tls_get_addr_arg = 0;
8472 continue;
8473 }
102890f0
AM		 8474 }
8475 else
8476 /* Symbols referenced by TLS relocs must be of type
8477 STT_TLS. So no need for .opd local sym adjust. */
8478 value = sym->st_value;
8479
8480 ok_tprel = FALSE;
8481 is_local = FALSE;
8482 if (h == NULL
8483 || !h->def_dynamic)
8484 {
8485 is_local = TRUE;
766bc656
AM		 8486 if (h != NULL
8487 && h->root.type == bfd_link_hash_undefweak)
8488 ok_tprel = TRUE;
c27b8c2a
AM		 8489 else if (sym_sec != NULL
8490 && sym_sec->output_section != NULL)
766bc656
AM		 8491 {
8492 value += sym_sec->output_offset;
8493 value += sym_sec->output_section->vma;
8494 value -= htab->elf.tls_sec->vma;
8495 ok_tprel = (value + TP_OFFSET + ((bfd_vma) 1 << 31)
8496 < (bfd_vma) 1 << 32);
8497 }
102890f0 8498 }
951fd09b 8499
102890f0 8500 r_type = ELF64_R_TYPE (rel->r_info);
663a1470
AM		 8501 /* If this section has old-style __tls_get_addr calls
8502 without marker relocs, then check that each
8503 __tls_get_addr call reloc is preceded by a reloc
8504 that conceivably belongs to the __tls_get_addr arg
8505 setup insn. If we don't find matching arg setup
8506 relocs, don't do any tls optimization. */
8507 if (pass == 0
8508 && sec->has_tls_get_addr_call
8509 && h != NULL
8510 && (h == &htab->tls_get_addr->elf
8511 || h == &htab->tls_get_addr_fd->elf)
8512 && !found_tls_get_addr_arg
8513 && is_branch_reloc (r_type))
8514 {
25f53a85 8515 info->callbacks->minfo (_("%H __tls_get_addr lost arg, "
663a1470
AM		 8516 "TLS optimization disabled\n"),
8517 ibfd, sec, rel->r_offset);
8518 ret = TRUE;
8519 goto err_free_rel;
8520 }
8521
8522 found_tls_get_addr_arg = 0;
102890f0
AM		 8523 switch (r_type)
8524 {
8525 case R_PPC64_GOT_TLSLD16:
8526 case R_PPC64_GOT_TLSLD16_LO:
8527 expecting_tls_get_addr = 1;
663a1470 8528 found_tls_get_addr_arg = 1;
1a0670f3 8529 /* Fall through. */
102890f0
AM		 8530
8531 case R_PPC64_GOT_TLSLD16_HI:
8532 case R_PPC64_GOT_TLSLD16_HA:
8533 /* These relocs should never be against a symbol
8534 defined in a shared lib. Leave them alone if
8535 that turns out to be the case. */
8536 if (!is_local)
8537 continue;
411e1bfb 8538
102890f0 8539 /* LD -> LE */
411e1bfb 8540 tls_set = 0;
102890f0
AM		 8541 tls_clear = TLS_LD;
8542 tls_type = TLS_TLS | TLS_LD;
8543 break;
411e1bfb 8544
102890f0
AM		 8545 case R_PPC64_GOT_TLSGD16:
8546 case R_PPC64_GOT_TLSGD16_LO:
8547 expecting_tls_get_addr = 1;
663a1470 8548 found_tls_get_addr_arg = 1;
1a0670f3 8549 /* Fall through. */
102890f0
AM		 8550
8551 case R_PPC64_GOT_TLSGD16_HI:
8552 case R_PPC64_GOT_TLSGD16_HA:
8553 if (ok_tprel)
8554 /* GD -> LE */
411e1bfb 8555 tls_set = 0;
102890f0
AM		 8556 else
8557 /* GD -> IE */
8558 tls_set = TLS_TLS | TLS_TPRELGD;
8559 tls_clear = TLS_GD;
8560 tls_type = TLS_TLS | TLS_GD;
8561 break;
8562
8563 case R_PPC64_GOT_TPREL16_DS:
8564 case R_PPC64_GOT_TPREL16_LO_DS:
8565 case R_PPC64_GOT_TPREL16_HI:
8566 case R_PPC64_GOT_TPREL16_HA:
8567 if (ok_tprel)
8568 {
8569 /* IE -> LE */
8570 tls_set = 0;
8571 tls_clear = TLS_TPREL;
8572 tls_type = TLS_TLS | TLS_TPREL;
8573 break;
8574 }
411e1bfb
AM		 8575 continue;
8576
727fc41e
AM		 8577 case R_PPC64_TLSGD:
8578 case R_PPC64_TLSLD:
663a1470 8579 found_tls_get_addr_arg = 1;
1a0670f3 8580 /* Fall through. */
663a1470
AM		 8581
8582 case R_PPC64_TLS:
8583 case R_PPC64_TOC16:
8584 case R_PPC64_TOC16_LO:
102890f0
AM		 8585 if (sym_sec == NULL || sym_sec != toc)
8586 continue;
8587
8588 /* Mark this toc entry as referenced by a TLS
8589 code sequence. We can do that now in the
8590 case of R_PPC64_TLS, and after checking for
8591 tls_get_addr for the TOC16 relocs. */
8592 if (toc_ref == NULL)
663a1470
AM		 8593 toc_ref = bfd_zmalloc (toc->output_section->rawsize / 8);
8594 if (toc_ref == NULL)
8595 goto err_free_rel;
8596
102890f0
AM		 8597 if (h != NULL)
8598 value = h->root.u.def.value;
8599 else
8600 value = sym->st_value;
8601 value += rel->r_addend;
73242275
AM		 8602 if (value % 8 != 0)
8603 continue;
8604 BFD_ASSERT (value < toc->size
8605 && toc->output_offset % 8 == 0);
663a1470 8606 toc_ref_index = (value + toc->output_offset) / 8;
727fc41e
AM		 8607 if (r_type == R_PPC64_TLS
8608 || r_type == R_PPC64_TLSGD
8609 || r_type == R_PPC64_TLSLD)
102890f0
AM		 8610 {
8611 toc_ref[toc_ref_index] = 1;
8612 continue;
8613 }
8614
8615 if (pass != 0 && toc_ref[toc_ref_index] == 0)
8616 continue;
8617
8618 tls_set = 0;
8619 tls_clear = 0;
8620 expecting_tls_get_addr = 2;
8621 break;
8622
8623 case R_PPC64_TPREL64:
8624 if (pass == 0
8625 || sec != toc
8626 || toc_ref == NULL
663a1470 8627 || !toc_ref[(rel->r_offset + toc->output_offset) / 8])
102890f0
AM		 8628 continue;
8629 if (ok_tprel)
8630 {
8631 /* IE -> LE */
8632 tls_set = TLS_EXPLICIT;
8633 tls_clear = TLS_TPREL;
8634 break;
8635 }
8636 continue;
8637
8638 case R_PPC64_DTPMOD64:
8639 if (pass == 0
8640 || sec != toc
8641 || toc_ref == NULL
663a1470 8642 || !toc_ref[(rel->r_offset + toc->output_offset) / 8])
102890f0
AM		 8643 continue;
8644 if (rel + 1 < relend
8645 && (rel[1].r_info
8646 == ELF64_R_INFO (r_symndx, R_PPC64_DTPREL64))
8647 && rel[1].r_offset == rel->r_offset + 8)
8648 {
8649 if (ok_tprel)
8650 /* GD -> LE */
8651 tls_set = TLS_EXPLICIT | TLS_GD;
8652 else
8653 /* GD -> IE */
8654 tls_set = TLS_EXPLICIT | TLS_GD | TLS_TPRELGD;
8655 tls_clear = TLS_GD;
8656 }
8657 else
8658 {
8659 if (!is_local)
8660 continue;
8661
8662 /* LD -> LE */
8663 tls_set = TLS_EXPLICIT;
8664 tls_clear = TLS_LD;
8665 }
8666 break;
8667
8668 default:
8669 continue;
8670 }
8671
8672 if (pass == 0)
8673 {
727fc41e
AM		 8674 if (!expecting_tls_get_addr
8675 || !sec->has_tls_get_addr_call)
102890f0
AM		 8676 continue;
8677
3a71aa26
AM		 8678 if (rel + 1 < relend
8679 && branch_reloc_hash_match (ibfd, rel + 1,
8680 htab->tls_get_addr,
8681 htab->tls_get_addr_fd))
102890f0 8682 {
3a71aa26 8683 if (expecting_tls_get_addr == 2)
102890f0 8684 {
3a71aa26 8685 /* Check for toc tls entries. */
f961d9dd 8686 unsigned char *toc_tls;
3a71aa26
AM		 8687 int retval;
8688
8689 retval = get_tls_mask (&toc_tls, NULL, NULL,
8690 &locsyms,
8691 rel, ibfd);
8692 if (retval == 0)
8693 goto err_free_rel;
663a1470
AM		 8694 if (toc_tls != NULL)
8695 {
8696 if ((*toc_tls & (TLS_GD | TLS_LD)) != 0)
8697 found_tls_get_addr_arg = 1;
8698 if (retval > 1)
8699 toc_ref[toc_ref_index] = 1;
8700 }
102890f0 8701 }
3a71aa26 8702 continue;
102890f0
AM		 8703 }
8704
8705 if (expecting_tls_get_addr != 1)
8706 continue;
8707
8708 /* Uh oh, we didn't find the expected call. We
8709 could just mark this symbol to exclude it
8710 from tls optimization but it's safer to skip
663a1470 8711 the entire optimization. */
25f53a85 8712 info->callbacks->minfo (_("%H arg lost __tls_get_addr, "
663a1470
AM		 8713 "TLS optimization disabled\n"),
8714 ibfd, sec, rel->r_offset);
8715 ret = TRUE;
8716 goto err_free_rel;
102890f0
AM		 8717 }
8718
85f7a9cb 8719 if (expecting_tls_get_addr && htab->tls_get_addr != NULL)
102890f0
AM		 8720 {
8721 struct plt_entry *ent;
8722 for (ent = htab->tls_get_addr->elf.plt.plist;
8723 ent != NULL;
8724 ent = ent->next)
8725 if (ent->addend == 0)
411e1bfb 8726 {
102890f0 8727 if (ent->plt.refcount > 0)
30038c59 8728 {
102890f0
AM		 8729 ent->plt.refcount -= 1;
8730 expecting_tls_get_addr = 0;
30038c59 8731 }
102890f0 8732 break;
411e1bfb 8733 }
102890f0 8734 }
411e1bfb 8735
85f7a9cb 8736 if (expecting_tls_get_addr && htab->tls_get_addr_fd != NULL)
102890f0
AM		 8737 {
8738 struct plt_entry *ent;
8739 for (ent = htab->tls_get_addr_fd->elf.plt.plist;
8740 ent != NULL;
8741 ent = ent->next)
8742 if (ent->addend == 0)
411e1bfb 8743 {
102890f0
AM		 8744 if (ent->plt.refcount > 0)
8745 ent->plt.refcount -= 1;
8746 break;
411e1bfb 8747 }
102890f0 8748 }
411e1bfb 8749
102890f0 8750 if (tls_clear == 0)
30038c59
AM		 8751 continue;
8752
102890f0
AM		 8753 if ((tls_set & TLS_EXPLICIT) == 0)
8754 {
8755 struct got_entry *ent;
411e1bfb 8756
102890f0
AM		 8757 /* Adjust got entry for this reloc. */
8758 if (h != NULL)
8759 ent = h->got.glist;
8760 else
8761 ent = elf_local_got_ents (ibfd)[r_symndx];
411e1bfb 8762
102890f0
AM		 8763 for (; ent != NULL; ent = ent->next)
8764 if (ent->addend == rel->r_addend
8765 && ent->owner == ibfd
8766 && ent->tls_type == tls_type)
8767 break;
8768 if (ent == NULL)
8769 abort ();
411e1bfb 8770
102890f0
AM		 8771 if (tls_set == 0)
8772 {
8773 /* We managed to get rid of a got entry. */
8774 if (ent->got.refcount > 0)
8775 ent->got.refcount -= 1;
8776 }
8777 }
8778 else
8779 {
8780 /* If we got rid of a DTPMOD/DTPREL reloc pair then
8781 we'll lose one or two dyn relocs. */
8782 if (!dec_dynrel_count (rel->r_info, sec, info,
19e08130 8783 NULL, h, sym))
102890f0 8784 return FALSE;
411e1bfb 8785
102890f0
AM		 8786 if (tls_set == (TLS_EXPLICIT | TLS_GD))
8787 {
8788 if (!dec_dynrel_count ((rel + 1)->r_info, sec, info,
19e08130 8789 NULL, h, sym))
102890f0
AM		 8790 return FALSE;
8791 }
8792 }
411e1bfb 8793
102890f0
AM		 8794 *tls_mask |= tls_set;
8795 *tls_mask &= ~tls_clear;
8796 }
8c1d1bb8 8797
102890f0
AM		 8798 if (elf_section_data (sec)->relocs != relstart)
8799 free (relstart);
8800 }
411e1bfb 8801
663a1470
AM		 8802 if (locsyms != NULL
8803 && (elf_symtab_hdr (ibfd).contents != (unsigned char *) locsyms))
8804 {
8805 if (!info->keep_memory)
8806 free (locsyms);
8807 else
8808 elf_symtab_hdr (ibfd).contents = (unsigned char *) locsyms;
8809 }
8810 }
411e1bfb 8811
663a1470
AM		 8812 if (toc_ref != NULL)
8813 free (toc_ref);
b34976b6 8814 return TRUE;
1e2f5b6e 8815}
b34976b6 8816
c5614fa4
AM		 8817/* Called via elf_link_hash_traverse from ppc64_elf_edit_toc to adjust
8818 the values of any global symbols in a toc section that has been
8819 edited. Globals in toc sections should be a rarity, so this function
8820 sets a flag if any are found in toc sections other than the one just
8821 edited, so that futher hash table traversals can be avoided. */
8822
8823struct adjust_toc_info
8824{
8825 asection *toc;
8826 unsigned long *skip;
8827 bfd_boolean global_toc_syms;
8828};
8829
ba761f19
AM		 8830enum toc_skip_enum { ref_from_discarded = 1, can_optimize = 2 };
8831
c5614fa4
AM		 8832static bfd_boolean
8833adjust_toc_syms (struct elf_link_hash_entry *h, void *inf)
8834{
8835 struct ppc_link_hash_entry *eh;
8836 struct adjust_toc_info *toc_inf = (struct adjust_toc_info *) inf;
854b41e7 8837 unsigned long i;
c5614fa4 8838
c5614fa4
AM		 8839 if (h->root.type != bfd_link_hash_defined
8840 && h->root.type != bfd_link_hash_defweak)
8841 return TRUE;
8842
8843 eh = (struct ppc_link_hash_entry *) h;
8844 if (eh->adjust_done)
8845 return TRUE;
8846
8847 if (eh->elf.root.u.def.section == toc_inf->toc)
8848 {
854b41e7
AM		 8849 if (eh->elf.root.u.def.value > toc_inf->toc->rawsize)
8850 i = toc_inf->toc->rawsize >> 3;
c5614fa4 8851 else
854b41e7
AM		 8852 i = eh->elf.root.u.def.value >> 3;
8853
ba761f19 8854 if ((toc_inf->skip[i] & (ref_from_discarded | can_optimize)) != 0)
c5614fa4 8855 {
4eca0228 8856 _bfd_error_handler
854b41e7
AM		 8857 (_("%s defined on removed toc entry"), eh->elf.root.root.string);
8858 do
8859 ++i;
ba761f19 8860 while ((toc_inf->skip[i] & (ref_from_discarded | can_optimize)) != 0);
854b41e7 8861 eh->elf.root.u.def.value = (bfd_vma) i << 3;
c5614fa4 8862 }
854b41e7
AM		 8863
8864 eh->elf.root.u.def.value -= toc_inf->skip[i];
c5614fa4
AM		 8865 eh->adjust_done = 1;
8866 }
8867 else if (strcmp (eh->elf.root.u.def.section->name, ".toc") == 0)
8868 toc_inf->global_toc_syms = TRUE;
8869
8870 return TRUE;
8871}
8872
560c8763
AM		 8873/* Return TRUE iff INSN is one we expect on a _LO variety toc/got reloc. */
8874
8875static bfd_boolean
8876ok_lo_toc_insn (unsigned int insn)
8877{
8878 return ((insn & (0x3f << 26)) == 14u << 26 /* addi */
8879 || (insn & (0x3f << 26)) == 32u << 26 /* lwz */
8880 || (insn & (0x3f << 26)) == 34u << 26 /* lbz */
8881 || (insn & (0x3f << 26)) == 36u << 26 /* stw */
8882 || (insn & (0x3f << 26)) == 38u << 26 /* stb */
8883 || (insn & (0x3f << 26)) == 40u << 26 /* lhz */
8884 || (insn & (0x3f << 26)) == 42u << 26 /* lha */
8885 || (insn & (0x3f << 26)) == 44u << 26 /* sth */
8886 || (insn & (0x3f << 26)) == 46u << 26 /* lmw */
8887 || (insn & (0x3f << 26)) == 47u << 26 /* stmw */
8888 || (insn & (0x3f << 26)) == 48u << 26 /* lfs */
8889 || (insn & (0x3f << 26)) == 50u << 26 /* lfd */
8890 || (insn & (0x3f << 26)) == 52u << 26 /* stfs */
8891 || (insn & (0x3f << 26)) == 54u << 26 /* stfd */
8892 || ((insn & (0x3f << 26)) == 58u << 26 /* lwa,ld,lmd */
8893 && (insn & 3) != 1)
8894 || ((insn & (0x3f << 26)) == 62u << 26 /* std, stmd */
8895 && ((insn & 3) == 0 || (insn & 3) == 3))
8896 || (insn & (0x3f << 26)) == 12u << 26 /* addic */);
8897}
8898
c5614fa4
AM		 8899/* Examine all relocs referencing .toc sections in order to remove
8900 unused .toc entries. */
8901
8902bfd_boolean
33c0ec9d 8903ppc64_elf_edit_toc (struct bfd_link_info *info)
c5614fa4
AM		 8904{
8905 bfd *ibfd;
8906 struct adjust_toc_info toc_inf;
67f0cbdb 8907 struct ppc_link_hash_table *htab = ppc_hash_table (info);
c5614fa4 8908
67f0cbdb 8909 htab->do_toc_opt = 1;
c5614fa4 8910 toc_inf.global_toc_syms = TRUE;
c72f2fb2 8911 for (ibfd = info->input_bfds; ibfd != NULL; ibfd = ibfd->link.next)
c5614fa4
AM		 8912 {
8913 asection *toc, *sec;
8914 Elf_Internal_Shdr *symtab_hdr;
8915 Elf_Internal_Sym *local_syms;
425b145b 8916 Elf_Internal_Rela *relstart, *rel, *toc_relocs;
c5614fa4
AM		 8917 unsigned long *skip, *drop;
8918 unsigned char *used;
8919 unsigned char *keep, last, some_unused;
8920
854b41e7
AM		 8921 if (!is_ppc64_elf (ibfd))
8922 continue;
8923
c5614fa4
AM		 8924 toc = bfd_get_section_by_name (ibfd, ".toc");
8925 if (toc == NULL
92b7a70f 8926 || toc->size == 0
dbaa2011
AM		 8927 || toc->sec_info_type == SEC_INFO_TYPE_JUST_SYMS
8928 || discarded_section (toc))
c5614fa4
AM		 8929 continue;
8930
425b145b 8931 toc_relocs = NULL;
c5614fa4 8932 local_syms = NULL;
0ffa91dd 8933 symtab_hdr = &elf_symtab_hdr (ibfd);
c5614fa4
AM		 8934
8935 /* Look at sections dropped from the final link. */
8936 skip = NULL;
8937 relstart = NULL;
8938 for (sec = ibfd->sections; sec != NULL; sec = sec->next)
8939 {
8940 if (sec->reloc_count == 0
dbaa2011 8941 || !discarded_section (sec)
c5614fa4
AM		 8942 || get_opd_info (sec)
8943 || (sec->flags & SEC_ALLOC) == 0
8944 || (sec->flags & SEC_DEBUGGING) != 0)
8945 continue;
8946
8947 relstart = _bfd_elf_link_read_relocs (ibfd, sec, NULL, NULL, FALSE);
8948 if (relstart == NULL)
8949 goto error_ret;
8950
8951 /* Run through the relocs to see which toc entries might be
8952 unused. */
8953 for (rel = relstart; rel < relstart + sec->reloc_count; ++rel)
8954 {
8955 enum elf_ppc64_reloc_type r_type;
8956 unsigned long r_symndx;
8957 asection *sym_sec;
8958 struct elf_link_hash_entry *h;
8959 Elf_Internal_Sym *sym;
8960 bfd_vma val;
8961
8962 r_type = ELF64_R_TYPE (rel->r_info);
8963 switch (r_type)
8964 {
8965 default:
8966 continue;
8967
8968 case R_PPC64_TOC16:
8969 case R_PPC64_TOC16_LO:
8970 case R_PPC64_TOC16_HI:
8971 case R_PPC64_TOC16_HA:
8972 case R_PPC64_TOC16_DS:
8973 case R_PPC64_TOC16_LO_DS:
8974 break;
8975 }
8976
8977 r_symndx = ELF64_R_SYM (rel->r_info);
8978 if (!get_sym_h (&h, &sym, &sym_sec, NULL, &local_syms,
8979 r_symndx, ibfd))
8980 goto error_ret;
8981
8982 if (sym_sec != toc)
8983 continue;
8984
8985 if (h != NULL)
8986 val = h->root.u.def.value;
8987 else
8988 val = sym->st_value;
8989 val += rel->r_addend;
8990
8991 if (val >= toc->size)
8992 continue;
8993
8994 /* Anything in the toc ought to be aligned to 8 bytes.
8995 If not, don't mark as unused. */
8996 if (val & 7)
8997 continue;
8998
8999 if (skip == NULL)
9000 {
854b41e7 9001 skip = bfd_zmalloc (sizeof (*skip) * (toc->size + 15) / 8);
c5614fa4
AM		 9002 if (skip == NULL)
9003 goto error_ret;
9004 }
9005
ba761f19 9006 skip[val >> 3] = ref_from_discarded;
c5614fa4
AM		 9007 }
9008
9009 if (elf_section_data (sec)->relocs != relstart)
9010 free (relstart);
9011 }
9012
ba761f19
AM		 9013 /* For largetoc loads of address constants, we can convert
9014 . addis rx,2,addr@got@ha
9015 . ld ry,addr@got@l(rx)
9016 to
9017 . addis rx,2,addr@toc@ha
9018 . addi ry,rx,addr@toc@l
9019 when addr is within 2G of the toc pointer. This then means
9020 that the word storing "addr" in the toc is no longer needed. */
68ffbac6 9021
ba761f19
AM		 9022 if (!ppc64_elf_tdata (ibfd)->has_small_toc_reloc
9023 && toc->output_section->rawsize < (bfd_vma) 1 << 31
9024 && toc->reloc_count != 0)
9025 {
9026 /* Read toc relocs. */
425b145b
AM		 9027 toc_relocs = _bfd_elf_link_read_relocs (ibfd, toc, NULL, NULL,
9028 info->keep_memory);
9029 if (toc_relocs == NULL)
ba761f19
AM		 9030 goto error_ret;
9031
425b145b 9032 for (rel = toc_relocs; rel < toc_relocs + toc->reloc_count; ++rel)
ba761f19
AM		 9033 {
9034 enum elf_ppc64_reloc_type r_type;
9035 unsigned long r_symndx;
9036 asection *sym_sec;
9037 struct elf_link_hash_entry *h;
9038 Elf_Internal_Sym *sym;
9039 bfd_vma val, addr;
9040
9041 r_type = ELF64_R_TYPE (rel->r_info);
9042 if (r_type != R_PPC64_ADDR64)
9043 continue;
9044
9045 r_symndx = ELF64_R_SYM (rel->r_info);
9046 if (!get_sym_h (&h, &sym, &sym_sec, NULL, &local_syms,
9047 r_symndx, ibfd))
9048 goto error_ret;
9049
425b145b 9050 if (sym_sec == NULL
c27b8c2a 9051 || sym_sec->output_section == NULL
dbaa2011 9052 || discarded_section (sym_sec))
425b145b
AM		 9053 continue;
9054
afe397ea 9055 if (!SYMBOL_REFERENCES_LOCAL (info, h))
ba761f19
AM		 9056 continue;
9057
9058 if (h != NULL)
bddc25c9
AM		 9059 {
9060 if (h->type == STT_GNU_IFUNC)
9061 continue;
9062 val = h->root.u.def.value;
9063 }
ba761f19 9064 else
bddc25c9
AM		 9065 {
9066 if (ELF_ST_TYPE (sym->st_info) == STT_GNU_IFUNC)
9067 continue;
9068 val = sym->st_value;
9069 }
ba761f19
AM		 9070 val += rel->r_addend;
9071 val += sym_sec->output_section->vma + sym_sec->output_offset;
9072
9073 /* We don't yet know the exact toc pointer value, but we
9074 know it will be somewhere in the toc section. Don't
9075 optimize if the difference from any possible toc
9076 pointer is outside [ff..f80008000, 7fff7fff]. */
9077 addr = toc->output_section->vma + TOC_BASE_OFF;
9078 if (val - addr + (bfd_vma) 0x80008000 >= (bfd_vma) 1 << 32)
9079 continue;
9080
9081 addr = toc->output_section->vma + toc->output_section->rawsize;
9082 if (val - addr + (bfd_vma) 0x80008000 >= (bfd_vma) 1 << 32)
9083 continue;
9084
9085 if (skip == NULL)
9086 {
9087 skip = bfd_zmalloc (sizeof (*skip) * (toc->size + 15) / 8);
9088 if (skip == NULL)
9089 goto error_ret;
9090 }
9091
9092 skip[rel->r_offset >> 3]
425b145b 9093 |= can_optimize | ((rel - toc_relocs) << 2);
ba761f19 9094 }
ba761f19
AM		 9095 }
9096
c5614fa4
AM		 9097 if (skip == NULL)
9098 continue;
9099
9100 used = bfd_zmalloc (sizeof (*used) * (toc->size + 7) / 8);
9101 if (used == NULL)
9102 {
9103 error_ret:
9104 if (local_syms != NULL
9105 && symtab_hdr->contents != (unsigned char *) local_syms)
9106 free (local_syms);
9107 if (sec != NULL
9108 && relstart != NULL
9109 && elf_section_data (sec)->relocs != relstart)
9110 free (relstart);
425b145b
AM		 9111 if (toc_relocs != NULL
9112 && elf_section_data (toc)->relocs != toc_relocs)
9113 free (toc_relocs);
c5614fa4
AM		 9114 if (skip != NULL)
9115 free (skip);
9116 return FALSE;
9117 }
9118
30038c59
AM		 9119 /* Now check all kept sections that might reference the toc.
9120 Check the toc itself last. */
9121 for (sec = (ibfd->sections == toc && toc->next ? toc->next
9122 : ibfd->sections);
c5614fa4 9123 sec != NULL;
c5614fa4 9124 sec = (sec == toc ? NULL
c5614fa4 9125 : sec->next == NULL ? toc
30038c59 9126 : sec->next == toc && toc->next ? toc->next
c5614fa4
AM		 9127 : sec->next))
9128 {
9129 int repeat;
9130
9131 if (sec->reloc_count == 0
dbaa2011 9132 || discarded_section (sec)
c5614fa4
AM		 9133 || get_opd_info (sec)
9134 || (sec->flags & SEC_ALLOC) == 0
9135 || (sec->flags & SEC_DEBUGGING) != 0)
9136 continue;
9137
854b41e7
AM		 9138 relstart = _bfd_elf_link_read_relocs (ibfd, sec, NULL, NULL,
9139 info->keep_memory);
c5614fa4 9140 if (relstart == NULL)
2915c55b
JK		 9141 {
9142 free (used);
9143 goto error_ret;
9144 }
c5614fa4
AM		 9145
9146 /* Mark toc entries referenced as used. */
c5614fa4 9147 do
d4f1ee75
AM		 9148 {
9149 repeat = 0;
9150 for (rel = relstart; rel < relstart + sec->reloc_count; ++rel)
9151 {
9152 enum elf_ppc64_reloc_type r_type;
9153 unsigned long r_symndx;
9154 asection *sym_sec;
9155 struct elf_link_hash_entry *h;
9156 Elf_Internal_Sym *sym;
9157 bfd_vma val;
9158 enum {no_check, check_lo, check_ha} insn_check;
98528052 9159
d4f1ee75
AM		 9160 r_type = ELF64_R_TYPE (rel->r_info);
9161 switch (r_type)
9162 {
9163 default:
9164 insn_check = no_check;
9165 break;
98528052 9166
d4f1ee75
AM		 9167 case R_PPC64_GOT_TLSLD16_HA:
9168 case R_PPC64_GOT_TLSGD16_HA:
9169 case R_PPC64_GOT_TPREL16_HA:
9170 case R_PPC64_GOT_DTPREL16_HA:
9171 case R_PPC64_GOT16_HA:
9172 case R_PPC64_TOC16_HA:
9173 insn_check = check_ha;
9174 break;
98528052 9175
d4f1ee75
AM		 9176 case R_PPC64_GOT_TLSLD16_LO:
9177 case R_PPC64_GOT_TLSGD16_LO:
9178 case R_PPC64_GOT_TPREL16_LO_DS:
9179 case R_PPC64_GOT_DTPREL16_LO_DS:
9180 case R_PPC64_GOT16_LO:
9181 case R_PPC64_GOT16_LO_DS:
9182 case R_PPC64_TOC16_LO:
9183 case R_PPC64_TOC16_LO_DS:
9184 insn_check = check_lo;
9185 break;
9186 }
560c8763 9187
d4f1ee75
AM		 9188 if (insn_check != no_check)
9189 {
9190 bfd_vma off = rel->r_offset & ~3;
9191 unsigned char buf[4];
9192 unsigned int insn;
c5614fa4 9193
d4f1ee75
AM		 9194 if (!bfd_get_section_contents (ibfd, sec, buf, off, 4))
9195 {
9196 free (used);
9197 goto error_ret;
9198 }
9199 insn = bfd_get_32 (ibfd, buf);
9200 if (insn_check == check_lo
9201 ? !ok_lo_toc_insn (insn)
9202 : ((insn & ((0x3f << 26) | 0x1f << 16))
9203 != ((15u << 26) | (2 << 16)) /* addis rt,2,imm */))
9204 {
9205 char str[12];
9206
9207 ppc64_elf_tdata (ibfd)->unexpected_toc_insn = 1;
9208 sprintf (str, "%#08x", insn);
9209 info->callbacks->einfo
9210 (_("%P: %H: toc optimization is not supported for"
9211 " %s instruction.\n"),
9212 ibfd, sec, rel->r_offset & ~3, str);
9213 }
9214 }
c5614fa4 9215
d4f1ee75
AM		 9216 switch (r_type)
9217 {
9218 case R_PPC64_TOC16:
9219 case R_PPC64_TOC16_LO:
9220 case R_PPC64_TOC16_HI:
9221 case R_PPC64_TOC16_HA:
9222 case R_PPC64_TOC16_DS:
9223 case R_PPC64_TOC16_LO_DS:
9224 /* In case we're taking addresses of toc entries. */
9225 case R_PPC64_ADDR64:
9226 break;
c5614fa4 9227
d4f1ee75
AM		 9228 default:
9229 continue;
9230 }
c5614fa4 9231
d4f1ee75
AM		 9232 r_symndx = ELF64_R_SYM (rel->r_info);
9233 if (!get_sym_h (&h, &sym, &sym_sec, NULL, &local_syms,
9234 r_symndx, ibfd))
9235 {
9236 free (used);
9237 goto error_ret;
9238 }
c5614fa4 9239
d4f1ee75
AM		 9240 if (sym_sec != toc)
9241 continue;
c5614fa4 9242
d4f1ee75
AM		 9243 if (h != NULL)
9244 val = h->root.u.def.value;
9245 else
9246 val = sym->st_value;
9247 val += rel->r_addend;
ba761f19 9248
d4f1ee75
AM		 9249 if (val >= toc->size)
9250 continue;
ba761f19 9251
d4f1ee75
AM		 9252 if ((skip[val >> 3] & can_optimize) != 0)
9253 {
9254 bfd_vma off;
9255 unsigned char opc;
9256
9257 switch (r_type)
9258 {
9259 case R_PPC64_TOC16_HA:
ba761f19 9260 break;
ba761f19 9261
d4f1ee75
AM		 9262 case R_PPC64_TOC16_LO_DS:
9263 off = rel->r_offset;
9264 off += (bfd_big_endian (ibfd) ? -2 : 3);
9265 if (!bfd_get_section_contents (ibfd, sec, &opc,
9266 off, 1))
9267 {
9268 free (used);
9269 goto error_ret;
9270 }
9271 if ((opc & (0x3f << 2)) == (58u << 2))
9272 break;
1a0670f3 9273 /* Fall through. */
ba761f19 9274
d4f1ee75
AM		 9275 default:
9276 /* Wrong sort of reloc, or not a ld. We may
9277 as well clear ref_from_discarded too. */
9278 skip[val >> 3] = 0;
9279 }
9280 }
9281
9282 if (sec != toc)
9283 used[val >> 3] = 1;
9284 /* For the toc section, we only mark as used if this
9285 entry itself isn't unused. */
9286 else if ((used[rel->r_offset >> 3]
9287 || !(skip[rel->r_offset >> 3] & ref_from_discarded))
9288 && !used[val >> 3])
9289 {
9290 /* Do all the relocs again, to catch reference
9291 chains. */
9292 repeat = 1;
9293 used[val >> 3] = 1;
9294 }
9295 }
9296 }
c5614fa4 9297 while (repeat);
854b41e7
AM		 9298
9299 if (elf_section_data (sec)->relocs != relstart)
9300 free (relstart);
c5614fa4
AM		 9301 }
9302
9303 /* Merge the used and skip arrays. Assume that TOC
9304 doublewords not appearing as either used or unused belong
9305 to to an entry more than one doubleword in size. */
9306 for (drop = skip, keep = used, last = 0, some_unused = 0;
9307 drop < skip + (toc->size + 7) / 8;
9308 ++drop, ++keep)
9309 {
9310 if (*keep)
9311 {
ba761f19
AM		 9312 *drop &= ~ref_from_discarded;
9313 if ((*drop & can_optimize) != 0)
9314 some_unused = 1;
c5614fa4
AM		 9315 last = 0;
9316 }
b140b010 9317 else if ((*drop & ref_from_discarded) != 0)
c5614fa4
AM		 9318 {
9319 some_unused = 1;
ba761f19 9320 last = ref_from_discarded;
c5614fa4
AM		 9321 }
9322 else
9323 *drop = last;
9324 }
9325
9326 free (used);
9327
9328 if (some_unused)
9329 {
9330 bfd_byte *contents, *src;
9331 unsigned long off;
d62b3684 9332 Elf_Internal_Sym *sym;
ba761f19 9333 bfd_boolean local_toc_syms = FALSE;
c5614fa4
AM		 9334
9335 /* Shuffle the toc contents, and at the same time convert the
9336 skip array from booleans into offsets. */
9337 if (!bfd_malloc_and_get_section (ibfd, toc, &contents))
9338 goto error_ret;
9339
9340 elf_section_data (toc)->this_hdr.contents = contents;
9341
9342 for (src = contents, off = 0, drop = skip;
9343 src < contents + toc->size;
9344 src += 8, ++drop)
9345 {
ba761f19
AM		 9346 if ((*drop & (can_optimize | ref_from_discarded)) != 0)
9347 off += 8;
c5614fa4
AM		 9348 else if (off != 0)
9349 {
9350 *drop = off;
9351 memcpy (src - off, src, 8);
9352 }
9353 }
854b41e7 9354 *drop = off;
c5614fa4
AM		 9355 toc->rawsize = toc->size;
9356 toc->size = src - contents - off;
9357
ba761f19
AM		 9358 /* Adjust addends for relocs against the toc section sym,
9359 and optimize any accesses we can. */
c5614fa4
AM		 9360 for (sec = ibfd->sections; sec != NULL; sec = sec->next)
9361 {
9362 if (sec->reloc_count == 0
dbaa2011 9363 || discarded_section (sec))
c5614fa4
AM		 9364 continue;
9365
9366 relstart = _bfd_elf_link_read_relocs (ibfd, sec, NULL, NULL,
854b41e7 9367 info->keep_memory);
c5614fa4
AM		 9368 if (relstart == NULL)
9369 goto error_ret;
9370
9371 for (rel = relstart; rel < relstart + sec->reloc_count; ++rel)
9372 {
9373 enum elf_ppc64_reloc_type r_type;
9374 unsigned long r_symndx;
9375 asection *sym_sec;
9376 struct elf_link_hash_entry *h;
854b41e7 9377 bfd_vma val;
c5614fa4
AM		 9378
9379 r_type = ELF64_R_TYPE (rel->r_info);
9380 switch (r_type)
9381 {
9382 default:
9383 continue;
9384
9385 case R_PPC64_TOC16:
9386 case R_PPC64_TOC16_LO:
9387 case R_PPC64_TOC16_HI:
9388 case R_PPC64_TOC16_HA:
9389 case R_PPC64_TOC16_DS:
9390 case R_PPC64_TOC16_LO_DS:
9391 case R_PPC64_ADDR64:
9392 break;
9393 }
9394
9395 r_symndx = ELF64_R_SYM (rel->r_info);
9396 if (!get_sym_h (&h, &sym, &sym_sec, NULL, &local_syms,
9397 r_symndx, ibfd))
9398 goto error_ret;
9399
ba761f19 9400 if (sym_sec != toc)
c5614fa4
AM		 9401 continue;
9402
ba761f19
AM		 9403 if (h != NULL)
9404 val = h->root.u.def.value;
9405 else
9406 {
9407 val = sym->st_value;
9408 if (val != 0)
9409 local_toc_syms = TRUE;
9410 }
9411
9412 val += rel->r_addend;
854b41e7
AM		 9413
9414 if (val > toc->rawsize)
9415 val = toc->rawsize;
ba761f19
AM		 9416 else if ((skip[val >> 3] & ref_from_discarded) != 0)
9417 continue;
9418 else if ((skip[val >> 3] & can_optimize) != 0)
9419 {
9420 Elf_Internal_Rela *tocrel
425b145b 9421 = toc_relocs + (skip[val >> 3] >> 2);
ba761f19
AM		 9422 unsigned long tsym = ELF64_R_SYM (tocrel->r_info);
9423
9424 switch (r_type)
9425 {
9426 case R_PPC64_TOC16_HA:
9427 rel->r_info = ELF64_R_INFO (tsym, R_PPC64_TOC16_HA);
9428 break;
9429
9430 case R_PPC64_TOC16_LO_DS:
9431 rel->r_info = ELF64_R_INFO (tsym, R_PPC64_LO_DS_OPT);
9432 break;
9433
9434 default:
28942f62
AM		 9435 if (!ppc64_elf_howto_table[R_PPC64_ADDR32])
9436 ppc_howto_init ();
b140b010 9437 info->callbacks->einfo
bc30df16 9438 (_("%P: %H: %s references "
b140b010
AM		 9439 "optimized away TOC entry\n"),
9440 ibfd, sec, rel->r_offset,
9441 ppc64_elf_howto_table[r_type]->name);
9442 bfd_set_error (bfd_error_bad_value);
9443 goto error_ret;
ba761f19
AM		 9444 }
9445 rel->r_addend = tocrel->r_addend;
9446 elf_section_data (sec)->relocs = relstart;
9447 continue;
9448 }
9449
9450 if (h != NULL || sym->st_value != 0)
9451 continue;
854b41e7
AM		 9452
9453 rel->r_addend -= skip[val >> 3];
9454 elf_section_data (sec)->relocs = relstart;
c5614fa4 9455 }
854b41e7
AM		 9456
9457 if (elf_section_data (sec)->relocs != relstart)
9458 free (relstart);
c5614fa4
AM		 9459 }
9460
9461 /* We shouldn't have local or global symbols defined in the TOC,
9462 but handle them anyway. */
df22d223
AM		 9463 if (local_syms != NULL)
9464 for (sym = local_syms;
9465 sym < local_syms + symtab_hdr->sh_info;
9466 ++sym)
9467 if (sym->st_value != 0
9468 && bfd_section_from_elf_index (ibfd, sym->st_shndx) == toc)
9469 {
9470 unsigned long i;
854b41e7 9471
df22d223
AM		 9472 if (sym->st_value > toc->rawsize)
9473 i = toc->rawsize >> 3;
9474 else
9475 i = sym->st_value >> 3;
854b41e7 9476
df22d223
AM		 9477 if ((skip[i] & (ref_from_discarded | can_optimize)) != 0)
9478 {
9479 if (local_toc_syms)
4eca0228 9480 _bfd_error_handler
df22d223
AM		 9481 (_("%s defined on removed toc entry"),
9482 bfd_elf_sym_name (ibfd, symtab_hdr, sym, NULL));
9483 do
9484 ++i;
9485 while ((skip[i] & (ref_from_discarded | can_optimize)));
9486 sym->st_value = (bfd_vma) i << 3;
9487 }
d62b3684 9488
df22d223
AM		 9489 sym->st_value -= skip[i];
9490 symtab_hdr->contents = (unsigned char *) local_syms;
9491 }
c5614fa4 9492
854b41e7 9493 /* Adjust any global syms defined in this toc input section. */
c5614fa4
AM		 9494 if (toc_inf.global_toc_syms)
9495 {
9496 toc_inf.toc = toc;
9497 toc_inf.skip = skip;
9498 toc_inf.global_toc_syms = FALSE;
9499 elf_link_hash_traverse (elf_hash_table (info), adjust_toc_syms,
9500 &toc_inf);
9501 }
854b41e7
AM		 9502
9503 if (toc->reloc_count != 0)
9504 {
d4730f92 9505 Elf_Internal_Shdr *rel_hdr;
854b41e7
AM		 9506 Elf_Internal_Rela *wrel;
9507 bfd_size_type sz;
9508
854b41e7 9509 /* Remove unused toc relocs, and adjust those we keep. */
28be611c
AM		 9510 if (toc_relocs == NULL)
9511 toc_relocs = _bfd_elf_link_read_relocs (ibfd, toc, NULL, NULL,
9512 info->keep_memory);
9513 if (toc_relocs == NULL)
9514 goto error_ret;
9515
425b145b
AM		 9516 wrel = toc_relocs;
9517 for (rel = toc_relocs; rel < toc_relocs + toc->reloc_count; ++rel)
ba761f19
AM		 9518 if ((skip[rel->r_offset >> 3]
9519 & (ref_from_discarded | can_optimize)) == 0)
854b41e7
AM		 9520 {
9521 wrel->r_offset = rel->r_offset - skip[rel->r_offset >> 3];
9522 wrel->r_info = rel->r_info;
9523 wrel->r_addend = rel->r_addend;
9524 ++wrel;
9525 }
9526 else if (!dec_dynrel_count (rel->r_info, toc, info,
9527 &local_syms, NULL, NULL))
9528 goto error_ret;
9529
425b145b
AM		 9530 elf_section_data (toc)->relocs = toc_relocs;
9531 toc->reloc_count = wrel - toc_relocs;
d4730f92
BS		 9532 rel_hdr = _bfd_elf_single_rel_hdr (toc);
9533 sz = rel_hdr->sh_entsize;
9534 rel_hdr->sh_size = toc->reloc_count * sz;
854b41e7 9535 }
c5614fa4 9536 }
28be611c
AM		 9537 else if (toc_relocs != NULL
9538 && elf_section_data (toc)->relocs != toc_relocs)
425b145b 9539 free (toc_relocs);
c5614fa4
AM		 9540
9541 if (local_syms != NULL
9542 && symtab_hdr->contents != (unsigned char *) local_syms)
9543 {
9544 if (!info->keep_memory)
9545 free (local_syms);
9546 else
9547 symtab_hdr->contents = (unsigned char *) local_syms;
9548 }
9549 free (skip);
9550 }
9551
9552 return TRUE;
9553}
9554
1bbe0902
AM		 9555/* Return true iff input section I references the TOC using
9556 instructions limited to +/-32k offsets. */
9557
9558bfd_boolean
9559ppc64_elf_has_small_toc_reloc (asection *i)
9560{
9561 return (is_ppc64_elf (i->owner)
9562 && ppc64_elf_tdata (i->owner)->has_small_toc_reloc);
9563}
9564
927be08e
AM		 9565/* Allocate space for one GOT entry. */
9566
9567static void
9568allocate_got (struct elf_link_hash_entry *h,
9569 struct bfd_link_info *info,
9570 struct got_entry *gent)
9571{
9572 struct ppc_link_hash_table *htab = ppc_hash_table (info);
9573 bfd_boolean dyn;
9574 struct ppc_link_hash_entry *eh = (struct ppc_link_hash_entry *) h;
9575 int entsize = (gent->tls_type & eh->tls_mask & (TLS_GD | TLS_LD)
9576 ? 16 : 8);
9577 int rentsize = (gent->tls_type & eh->tls_mask & TLS_GD
9578 ? 2 : 1) * sizeof (Elf64_External_Rela);
9579 asection *got = ppc64_elf_tdata (gent->owner)->got;
9580
9581 gent->got.offset = got->size;
9582 got->size += entsize;
9583
9584 dyn = htab->elf.dynamic_sections_created;
19e08130 9585 if (h->type == STT_GNU_IFUNC)
927be08e 9586 {
33e44f2e 9587 htab->elf.irelplt->size += rentsize;
19e08130 9588 htab->got_reli_size += rentsize;
927be08e 9589 }
0e1862bb 9590 else if ((bfd_link_pic (info)
19e08130
AM		 9591 || WILL_CALL_FINISH_DYNAMIC_SYMBOL (dyn, 0, h))
9592 && (ELF_ST_VISIBILITY (h->other) == STV_DEFAULT
9593 || h->root.type != bfd_link_hash_undefweak))
927be08e 9594 {
19e08130 9595 asection *relgot = ppc64_elf_tdata (gent->owner)->relgot;
927be08e 9596 relgot->size += rentsize;
927be08e
AM		 9597 }
9598}
9599
7865406b
AM		 9600/* This function merges got entries in the same toc group. */
9601
9602static void
9603merge_got_entries (struct got_entry **pent)
9604{
9605 struct got_entry *ent, *ent2;
9606
9607 for (ent = *pent; ent != NULL; ent = ent->next)
9608 if (!ent->is_indirect)
9609 for (ent2 = ent->next; ent2 != NULL; ent2 = ent2->next)
9610 if (!ent2->is_indirect
9611 && ent2->addend == ent->addend
9612 && ent2->tls_type == ent->tls_type
9613 && elf_gp (ent2->owner) == elf_gp (ent->owner))
9614 {
9615 ent2->is_indirect = TRUE;
9616 ent2->got.ent = ent;
9617 }
9618}
9619
65f38f15
AM		 9620/* Allocate space in .plt, .got and associated reloc sections for
9621 dynamic relocs. */
5bd4f169 9622
b34976b6 9623static bfd_boolean
4ce794b7 9624allocate_dynrelocs (struct elf_link_hash_entry *h, void *inf)
5bd4f169 9625{
65f38f15
AM		 9626 struct bfd_link_info *info;
9627 struct ppc_link_hash_table *htab;
5bd4f169 9628 asection *s;
65f38f15 9629 struct ppc_link_hash_entry *eh;
0b8bcf0d 9630 struct got_entry **pgent, *gent;
5bd4f169 9631
e92d460e 9632 if (h->root.type == bfd_link_hash_indirect)
b34976b6 9633 return TRUE;
5bd4f169 9634
65f38f15
AM		 9635 info = (struct bfd_link_info *) inf;
9636 htab = ppc_hash_table (info);
4dfe6ac6
NC		 9637 if (htab == NULL)
9638 return FALSE;
5bd4f169 9639
951fd09b
AM		 9640 eh = (struct ppc_link_hash_entry *) h;
9641 /* Run through the TLS GD got entries first if we're changing them
9642 to TPREL. */
e7b938ca 9643 if ((eh->tls_mask & TLS_TPRELGD) != 0)
951fd09b
AM		 9644 for (gent = h->got.glist; gent != NULL; gent = gent->next)
9645 if (gent->got.refcount > 0
9646 && (gent->tls_type & TLS_GD) != 0)
9647 {
9648 /* This was a GD entry that has been converted to TPREL. If
9649 there happens to be a TPREL entry we can use that one. */
9650 struct got_entry *ent;
9651 for (ent = h->got.glist; ent != NULL; ent = ent->next)
9652 if (ent->got.refcount > 0
9653 && (ent->tls_type & TLS_TPREL) != 0
e717da7e
AM		 9654 && ent->addend == gent->addend
9655 && ent->owner == gent->owner)
951fd09b
AM		 9656 {
9657 gent->got.refcount = 0;
9658 break;
9659 }
9660
9661 /* If not, then we'll be using our own TPREL entry. */
9662 if (gent->got.refcount != 0)
9663 gent->tls_type = TLS_TLS | TLS_TPREL;
9664 }
9665
7865406b
AM		 9666 /* Remove any list entry that won't generate a word in the GOT before
9667 we call merge_got_entries. Otherwise we risk merging to empty
9668 entries. */
0b8bcf0d
AM		 9669 pgent = &h->got.glist;
9670 while ((gent = *pgent) != NULL)
411e1bfb 9671 if (gent->got.refcount > 0)
7865406b
AM		 9672 {
9673 if ((gent->tls_type & TLS_LD) != 0
9674 && !h->def_dynamic)
9675 {
9676 ppc64_tlsld_got (gent->owner)->got.refcount += 1;
9677 *pgent = gent->next;
9678 }
9679 else
9680 pgent = &gent->next;
9681 }
9682 else
9683 *pgent = gent->next;
9684
9685 if (!htab->do_multi_toc)
9686 merge_got_entries (&h->got.glist);
9687
9688 for (gent = h->got.glist; gent != NULL; gent = gent->next)
9689 if (!gent->is_indirect)
411e1bfb
AM		 9690 {
9691 /* Make sure this symbol is output as a dynamic symbol.
951fd09b
AM		 9692 Undefined weak syms won't yet be marked as dynamic,
9693 nor will all TLS symbols. */
411e1bfb 9694 if (h->dynindx == -1
b099ab9f 9695 && !h->forced_local
25f23106 9696 && h->type != STT_GNU_IFUNC
b099ab9f 9697 && htab->elf.dynamic_sections_created)
411e1bfb 9698 {
c152c796 9699 if (! bfd_elf_link_record_dynamic_symbol (info, h))
411e1bfb
AM		 9700 return FALSE;
9701 }
65f38f15 9702
0c8d6e5c 9703 if (!is_ppc64_elf (gent->owner))
927be08e 9704 abort ();
0ffa91dd 9705
927be08e 9706 allocate_got (h, info, gent);
411e1bfb 9707 }
65f38f15 9708
8a2058b5
AM		 9709 if (!htab->elf.dynamic_sections_created
9710 && h->type != STT_GNU_IFUNC)
9711 eh->dyn_relocs = NULL;
9712
9713 if (eh->dyn_relocs != NULL)
65f38f15 9714 {
8a2058b5
AM		 9715 struct elf_dyn_relocs *p, **pp;
9716
57e7d118
AM		 9717 /* In the shared -Bsymbolic case, discard space allocated for
9718 dynamic pc-relative relocs against symbols which turn out to
9719 be defined in regular objects. For the normal shared case,
9720 discard space for relocs that have become local due to symbol
9721 visibility changes. */
9722
9723 if (bfd_link_pic (info))
65f38f15 9724 {
57e7d118
AM		 9725 /* Relocs that use pc_count are those that appear on a call
9726 insn, or certain REL relocs (see must_be_dyn_reloc) that
9727 can be generated via assembly. We want calls to
9728 protected symbols to resolve directly to the function
9729 rather than going via the plt. If people want function
9730 pointer comparisons to work as expected then they should
9731 avoid writing weird assembly. */
9732 if (SYMBOL_CALLS_LOCAL (info, h))
9733 {
57e7d118
AM		 9734 for (pp = &eh->dyn_relocs; (p = *pp) != NULL; )
9735 {
9736 p->count -= p->pc_count;
9737 p->pc_count = 0;
9738 if (p->count == 0)
9739 *pp = p->next;
9740 else
9741 pp = &p->next;
9742 }
9743 }
65f38f15 9744
57e7d118
AM		 9745 /* Also discard relocs on undefined weak syms with
9746 non-default visibility. */
9747 if (eh->dyn_relocs != NULL
9748 && h->root.type == bfd_link_hash_undefweak)
5bd4f169 9749 {
57e7d118
AM		 9750 if (ELF_ST_VISIBILITY (h->other) != STV_DEFAULT)
9751 eh->dyn_relocs = NULL;
9752
9753 /* Make sure this symbol is output as a dynamic symbol.
9754 Undefined weak syms won't yet be marked as dynamic. */
9755 else if (h->dynindx == -1
9756 && !h->forced_local)
9757 {
9758 if (! bfd_elf_link_record_dynamic_symbol (info, h))
9759 return FALSE;
9760 }
5bd4f169 9761 }
65f38f15 9762 }
57e7d118 9763 else if (h->type == STT_GNU_IFUNC)
dfbb6ac9 9764 {
8a2058b5
AM		 9765 /* A plt entry is always created when making direct calls to
9766 an ifunc, even when building a static executable, but
9767 that doesn't cover all cases. We may have only an ifunc
9768 initialised function pointer for a given ifunc symbol.
9769
9770 For ELFv2, dynamic relocations are not required when
9771 generating a global entry PLT stub. */
9772 if (abiversion (info->output_bfd) >= 2)
9773 {
9774 if (global_entry_stub (h))
9775 eh->dyn_relocs = NULL;
9776 }
9777
9778 /* For ELFv1 we have function descriptors. Descriptors need
9779 to be treated like PLT entries and thus have dynamic
9780 relocations. One exception is when the function
9781 descriptor is copied into .dynbss (which should only
9782 happen with ancient versions of gcc). */
9783 else if (h->needs_copy)
dfbb6ac9 9784 eh->dyn_relocs = NULL;
57e7d118
AM		 9785 }
9786 else if (ELIMINATE_COPY_RELOCS)
9787 {
8a2058b5 9788 /* For the non-pic case, discard space for relocs against
57e7d118
AM		 9789 symbols which turn out to need copy relocs or are not
9790 dynamic. */
dfbb6ac9 9791
8a2058b5
AM		 9792 /* First make sure this symbol is output as a dynamic symbol.
9793 Undefined weak syms won't yet be marked as dynamic. */
9794 if (h->root.type == bfd_link_hash_undefweak
9795 && !h->non_got_ref
9796 && !h->def_regular
9797 && h->dynindx == -1
9798 && !h->forced_local
9799 && !bfd_elf_link_record_dynamic_symbol (info, h))
9800 return FALSE;
57e7d118 9801
8a2058b5
AM		 9802 if (h->non_got_ref
9803 || h->def_regular
9804 || h->dynindx == -1)
9805 eh->dyn_relocs = NULL;
57e7d118
AM		 9806 }
9807
9808 /* Finally, allocate space. */
9809 for (p = eh->dyn_relocs; p != NULL; p = p->next)
9810 {
9811 asection *sreloc = elf_section_data (p->sec)->sreloc;
9812 if (eh->elf.type == STT_GNU_IFUNC)
9813 sreloc = htab->elf.irelplt;
9814 sreloc->size += p->count * sizeof (Elf64_External_Rela);
dfbb6ac9 9815 }
65f38f15 9816 }
57e7d118
AM		 9817
9818 if ((htab->elf.dynamic_sections_created
9819 && h->dynindx != -1
9820 && WILL_CALL_FINISH_DYNAMIC_SYMBOL (1, bfd_link_pic (info), h))
9821 || h->type == STT_GNU_IFUNC)
65f38f15 9822 {
57e7d118
AM		 9823 struct plt_entry *pent;
9824 bfd_boolean doneone = FALSE;
9825 for (pent = h->plt.plist; pent != NULL; pent = pent->next)
9826 if (pent->plt.refcount > 0)
9827 {
9828 if (!htab->elf.dynamic_sections_created
9829 || h->dynindx == -1)
9830 {
9831 s = htab->elf.iplt;
9832 pent->plt.offset = s->size;
9833 s->size += PLT_ENTRY_SIZE (htab);
9834 s = htab->elf.irelplt;
9835 }
9836 else
9837 {
9838 /* If this is the first .plt entry, make room for the special
9839 first entry. */
9840 s = htab->elf.splt;
9841 if (s->size == 0)
9842 s->size += PLT_INITIAL_ENTRY_SIZE (htab);
65f38f15 9843
57e7d118 9844 pent->plt.offset = s->size;
65f38f15 9845
57e7d118
AM		 9846 /* Make room for this entry. */
9847 s->size += PLT_ENTRY_SIZE (htab);
65f38f15 9848
57e7d118
AM		 9849 /* Make room for the .glink code. */
9850 s = htab->glink;
9851 if (s->size == 0)
9852 s->size += GLINK_CALL_STUB_SIZE;
9853 if (htab->opd_abi)
9854 {
9855 /* We need bigger stubs past index 32767. */
9856 if (s->size >= GLINK_CALL_STUB_SIZE + 32768*2*4)
9857 s->size += 4;
9858 s->size += 2*4;
9859 }
9860 else
9861 s->size += 4;
65f38f15 9862
57e7d118
AM		 9863 /* We also need to make an entry in the .rela.plt section. */
9864 s = htab->elf.srelplt;
9865 }
9866 s->size += sizeof (Elf64_External_Rela);
9867 doneone = TRUE;
9868 }
9869 else
9870 pent->plt.offset = (bfd_vma) -1;
9871 if (!doneone)
9872 {
9873 h->plt.plist = NULL;
9874 h->needs_plt = 0;
9875 }
65f38f15 9876 }
57e7d118 9877 else
65f38f15 9878 {
57e7d118
AM		 9879 h->plt.plist = NULL;
9880 h->needs_plt = 0;
65f38f15
AM		 9881 }
9882
b34976b6 9883 return TRUE;
65f38f15
AM		 9884}
9885
a345bc8d
AM		 9886/* Called via elf_link_hash_traverse from ppc64_elf_size_dynamic_sections
9887 to set up space for global entry stubs. These are put in glink,
9888 after the branch table. */
65f38f15 9889
b34976b6 9890static bfd_boolean
a345bc8d 9891size_global_entry_stubs (struct elf_link_hash_entry *h, void *inf)
65f38f15 9892{
a345bc8d
AM		 9893 struct bfd_link_info *info;
9894 struct ppc_link_hash_table *htab;
9895 struct plt_entry *pent;
9896 asection *s;
65f38f15 9897
a345bc8d
AM		 9898 if (h->root.type == bfd_link_hash_indirect)
9899 return TRUE;
65f38f15 9900
a345bc8d
AM		 9901 if (!h->pointer_equality_needed)
9902 return TRUE;
65f38f15 9903
a345bc8d
AM		 9904 if (h->def_regular)
9905 return TRUE;
65f38f15 9906
a345bc8d
AM		 9907 info = inf;
9908 htab = ppc_hash_table (info);
9909 if (htab == NULL)
9910 return FALSE;
9911
9912 s = htab->glink;
9913 for (pent = h->plt.plist; pent != NULL; pent = pent->next)
9914 if (pent->plt.offset != (bfd_vma) -1
9915 && pent->addend == 0)
9916 {
afe397ea
AM		 9917 /* For ELFv2, if this symbol is not defined in a regular file
9918 and we are not generating a shared library or pie, then we
9919 need to define the symbol in the executable on a call stub.
9920 This is to avoid text relocations. */
a345bc8d 9921 s->size = (s->size + 15) & -16;
8a2058b5 9922 h->root.type = bfd_link_hash_defined;
afe397ea
AM		 9923 h->root.u.def.section = s;
9924 h->root.u.def.value = s->size;
a345bc8d
AM		 9925 s->size += 16;
9926 break;
9927 }
9928 return TRUE;
9929}
9930
9931/* Set DF_TEXTREL if we find any dynamic relocs that apply to
9932 read-only sections. */
9933
9934static bfd_boolean
9935maybe_set_textrel (struct elf_link_hash_entry *h, void *info)
9936{
9937 if (h->root.type == bfd_link_hash_indirect)
9938 return TRUE;
9939
9940 if (readonly_dynrelocs (h))
9941 {
9942 ((struct bfd_link_info *) info)->flags |= DF_TEXTREL;
9943
9944 /* Not an error, just cut short the traversal. */
9945 return FALSE;
65f38f15 9946 }
b34976b6 9947 return TRUE;
65f38f15
AM		 9948}
9949
9950/* Set the sizes of the dynamic sections. */
9951
b34976b6 9952static bfd_boolean
ee67d69a 9953ppc64_elf_size_dynamic_sections (bfd *output_bfd,
4ce794b7 9954 struct bfd_link_info *info)
65f38f15
AM		 9955{
9956 struct ppc_link_hash_table *htab;
9957 bfd *dynobj;
9958 asection *s;
b34976b6 9959 bfd_boolean relocs;
65f38f15 9960 bfd *ibfd;
7865406b 9961 struct got_entry *first_tlsld;
65f38f15
AM		 9962
9963 htab = ppc_hash_table (info);
4dfe6ac6
NC		 9964 if (htab == NULL)
9965 return FALSE;
9966
65f38f15
AM		 9967 dynobj = htab->elf.dynobj;
9968 if (dynobj == NULL)
9969 abort ();
9970
9971 if (htab->elf.dynamic_sections_created)
9972 {
9973 /* Set the contents of the .interp section to the interpreter. */
9b8b325a 9974 if (bfd_link_executable (info) && !info->nointerp)
65f38f15 9975 {
3d4d4302 9976 s = bfd_get_linker_section (dynobj, ".interp");
65f38f15
AM		 9977 if (s == NULL)
9978 abort ();
eea6121a 9979 s->size = sizeof ELF_DYNAMIC_INTERPRETER;
65f38f15
AM		 9980 s->contents = (unsigned char *) ELF_DYNAMIC_INTERPRETER;
9981 }
9982 }
9983
9984 /* Set up .got offsets for local syms, and space for local dynamic
9985 relocs. */
c72f2fb2 9986 for (ibfd = info->input_bfds; ibfd != NULL; ibfd = ibfd->link.next)
65f38f15 9987 {
411e1bfb
AM		 9988 struct got_entry **lgot_ents;
9989 struct got_entry **end_lgot_ents;
e054468f
AM		 9990 struct plt_entry **local_plt;
9991 struct plt_entry **end_local_plt;
f961d9dd 9992 unsigned char *lgot_masks;
65f38f15
AM		 9993 bfd_size_type locsymcount;
9994 Elf_Internal_Shdr *symtab_hdr;
65f38f15 9995
0c8d6e5c 9996 if (!is_ppc64_elf (ibfd))
65f38f15
AM		 9997 continue;
9998
9999 for (s = ibfd->sections; s != NULL; s = s->next)
10000 {
19e08130 10001 struct ppc_dyn_relocs *p;
65f38f15 10002
6edfbbad 10003 for (p = elf_section_data (s)->local_dynrel; p != NULL; p = p->next)
65f38f15 10004 {
ec338859
AM		 10005 if (!bfd_is_abs_section (p->sec)
10006 && bfd_is_abs_section (p->sec->output_section))
10007 {
10008 /* Input section has been discarded, either because
10009 it is a copy of a linkonce section or due to
10010 linker script /DISCARD/, so we'll be discarding
10011 the relocs too. */
10012 }
248866a8 10013 else if (p->count != 0)
ec338859 10014 {
19e08130
AM		 10015 asection *srel = elf_section_data (p->sec)->sreloc;
10016 if (p->ifunc)
33e44f2e 10017 srel = htab->elf.irelplt;
eea6121a 10018 srel->size += p->count * sizeof (Elf64_External_Rela);
248866a8
AM		 10019 if ((p->sec->output_section->flags & SEC_READONLY) != 0)
10020 info->flags |= DF_TEXTREL;
ec338859 10021 }
65f38f15
AM		 10022 }
10023 }
10024
411e1bfb
AM		 10025 lgot_ents = elf_local_got_ents (ibfd);
10026 if (!lgot_ents)
65f38f15
AM		 10027 continue;
10028
0ffa91dd 10029 symtab_hdr = &elf_symtab_hdr (ibfd);
65f38f15 10030 locsymcount = symtab_hdr->sh_info;
411e1bfb 10031 end_lgot_ents = lgot_ents + locsymcount;
e054468f
AM		 10032 local_plt = (struct plt_entry **) end_lgot_ents;
10033 end_local_plt = local_plt + locsymcount;
f961d9dd 10034 lgot_masks = (unsigned char *) end_local_plt;
e717da7e 10035 s = ppc64_elf_tdata (ibfd)->got;
e7b938ca 10036 for (; lgot_ents < end_lgot_ents; ++lgot_ents, ++lgot_masks)
65f38f15 10037 {
0b8bcf0d 10038 struct got_entry **pent, *ent;
411e1bfb 10039
0b8bcf0d
AM		 10040 pent = lgot_ents;
10041 while ((ent = *pent) != NULL)
411e1bfb
AM		 10042 if (ent->got.refcount > 0)
10043 {
e7b938ca 10044 if ((ent->tls_type & *lgot_masks & TLS_LD) != 0)
411e1bfb 10045 {
927be08e 10046 ppc64_tlsld_got (ibfd)->got.refcount += 1;
0b8bcf0d 10047 *pent = ent->next;
411e1bfb
AM		 10048 }
10049 else
10050 {
19e08130
AM		 10051 unsigned int ent_size = 8;
10052 unsigned int rel_size = sizeof (Elf64_External_Rela);
10053
eea6121a 10054 ent->got.offset = s->size;
e7b938ca 10055 if ((ent->tls_type & *lgot_masks & TLS_GD) != 0)
927be08e 10056 {
19e08130
AM		 10057 ent_size *= 2;
10058 rel_size *= 2;
10059 }
10060 s->size += ent_size;
10061 if ((*lgot_masks & PLT_IFUNC) != 0)
10062 {
33e44f2e 10063 htab->elf.irelplt->size += rel_size;
19e08130
AM		 10064 htab->got_reli_size += rel_size;
10065 }
0e1862bb 10066 else if (bfd_link_pic (info))
19e08130
AM		 10067 {
10068 asection *srel = ppc64_elf_tdata (ibfd)->relgot;
10069 srel->size += rel_size;
927be08e 10070 }
0b8bcf0d 10071 pent = &ent->next;
411e1bfb
AM		 10072 }
10073 }
10074 else
0b8bcf0d 10075 *pent = ent->next;
65f38f15 10076 }
e054468f
AM		 10077
10078 /* Allocate space for calls to local STT_GNU_IFUNC syms in .iplt. */
10079 for (; local_plt < end_local_plt; ++local_plt)
10080 {
10081 struct plt_entry *ent;
10082
10083 for (ent = *local_plt; ent != NULL; ent = ent->next)
10084 if (ent->plt.refcount > 0)
10085 {
33e44f2e 10086 s = htab->elf.iplt;
e054468f 10087 ent->plt.offset = s->size;
b9e5796b 10088 s->size += PLT_ENTRY_SIZE (htab);
e054468f 10089
33e44f2e 10090 htab->elf.irelplt->size += sizeof (Elf64_External_Rela);
e054468f
AM		 10091 }
10092 else
10093 ent->plt.offset = (bfd_vma) -1;
10094 }
65f38f15
AM		 10095 }
10096
10097 /* Allocate global sym .plt and .got entries, and space for global
10098 sym dynamic relocs. */
4ce794b7 10099 elf_link_hash_traverse (&htab->elf, allocate_dynrelocs, info);
a345bc8d
AM		 10100 /* Stash the end of glink branch table. */
10101 if (htab->glink != NULL)
10102 htab->glink->rawsize = htab->glink->size;
10103
0e1862bb 10104 if (!htab->opd_abi && !bfd_link_pic (info))
a345bc8d 10105 elf_link_hash_traverse (&htab->elf, size_global_entry_stubs, info);
65f38f15 10106
7865406b 10107 first_tlsld = NULL;
c72f2fb2 10108 for (ibfd = info->input_bfds; ibfd != NULL; ibfd = ibfd->link.next)
102890f0 10109 {
7865406b
AM		 10110 struct got_entry *ent;
10111
0c8d6e5c 10112 if (!is_ppc64_elf (ibfd))
102890f0
AM		 10113 continue;
10114
7865406b
AM		 10115 ent = ppc64_tlsld_got (ibfd);
10116 if (ent->got.refcount > 0)
102890f0 10117 {
7865406b 10118 if (!htab->do_multi_toc && first_tlsld != NULL)
102890f0 10119 {
7865406b
AM		 10120 ent->is_indirect = TRUE;
10121 ent->got.ent = first_tlsld;
10122 }
10123 else
10124 {
10125 if (first_tlsld == NULL)
10126 first_tlsld = ent;
10127 s = ppc64_elf_tdata (ibfd)->got;
10128 ent->got.offset = s->size;
10129 ent->owner = ibfd;
10130 s->size += 16;
0e1862bb 10131 if (bfd_link_pic (info))
7865406b
AM		 10132 {
10133 asection *srel = ppc64_elf_tdata (ibfd)->relgot;
10134 srel->size += sizeof (Elf64_External_Rela);
10135 }
102890f0
AM		 10136 }
10137 }
10138 else
7865406b 10139 ent->got.offset = (bfd_vma) -1;
102890f0
AM		 10140 }
10141
65f38f15
AM		 10142 /* We now have determined the sizes of the various dynamic sections.
10143 Allocate memory for them. */
b34976b6 10144 relocs = FALSE;
65f38f15
AM		 10145 for (s = dynobj->sections; s != NULL; s = s->next)
10146 {
10147 if ((s->flags & SEC_LINKER_CREATED) == 0)
10148 continue;
10149
4ce794b7 10150 if (s == htab->brlt || s == htab->relbrlt)
721956f4
AM		 10151 /* These haven't been allocated yet; don't strip. */
10152 continue;
33e44f2e
AM		 10153 else if (s == htab->elf.sgot
10154 || s == htab->elf.splt
10155 || s == htab->elf.iplt
c456f082
AM		 10156 || s == htab->glink
10157 || s == htab->dynbss)
65f38f15
AM		 10158 {
10159 /* Strip this section if we don't need it; see the
10160 comment below. */
5bd4f169 10161 }
58d180e8
AM		 10162 else if (s == htab->glink_eh_frame)
10163 {
10164 if (!bfd_is_abs_section (s->output_section))
10165 /* Not sized yet. */
10166 continue;
10167 }
70cc837d 10168 else if (CONST_STRNEQ (s->name, ".rela"))
5bd4f169 10169 {
c456f082 10170 if (s->size != 0)
5bd4f169 10171 {
33e44f2e 10172 if (s != htab->elf.srelplt)
b34976b6 10173 relocs = TRUE;
5bd4f169
AM		 10174
10175 /* We use the reloc_count field as a counter if we need
10176 to copy relocs into the output file. */
10177 s->reloc_count = 0;
10178 }
10179 }
65f38f15 10180 else
5bd4f169
AM		 10181 {
10182 /* It's not one of our sections, so don't allocate space. */
10183 continue;
10184 }
10185
eea6121a 10186 if (s->size == 0)
5bd4f169 10187 {
c456f082
AM		 10188 /* If we don't need this section, strip it from the
10189 output file. This is mostly to handle .rela.bss and
10190 .rela.plt. We must create both sections in
10191 create_dynamic_sections, because they must be created
10192 before the linker maps input sections to output
10193 sections. The linker does that before
10194 adjust_dynamic_symbol is called, and it is that
10195 function which decides whether anything needs to go
10196 into these sections. */
8423293d 10197 s->flags |= SEC_EXCLUDE;
5bd4f169
AM		 10198 continue;
10199 }
10200
c456f082 10201 if ((s->flags & SEC_HAS_CONTENTS) == 0)
5f333394
AM		 10202 continue;
10203
65f38f15
AM		 10204 /* Allocate memory for the section contents. We use bfd_zalloc
10205 here in case unused entries are not reclaimed before the
10206 section's contents are written out. This should not happen,
411e1bfb
AM		 10207 but this way if it does we get a R_PPC64_NONE reloc in .rela
10208 sections instead of garbage.
10209 We also rely on the section contents being zero when writing
10210 the GOT. */
eea6121a 10211 s->contents = bfd_zalloc (dynobj, s->size);
65f38f15 10212 if (s->contents == NULL)
b34976b6 10213 return FALSE;
5bd4f169
AM		 10214 }
10215
c72f2fb2 10216 for (ibfd = info->input_bfds; ibfd != NULL; ibfd = ibfd->link.next)
e717da7e 10217 {
0c8d6e5c 10218 if (!is_ppc64_elf (ibfd))
7b53ace3
AM		 10219 continue;
10220
e717da7e 10221 s = ppc64_elf_tdata (ibfd)->got;
33e44f2e 10222 if (s != NULL && s != htab->elf.sgot)
e717da7e 10223 {
eea6121a 10224 if (s->size == 0)
8423293d 10225 s->flags |= SEC_EXCLUDE;
e717da7e
AM		 10226 else
10227 {
eea6121a 10228 s->contents = bfd_zalloc (ibfd, s->size);
e717da7e
AM		 10229 if (s->contents == NULL)
10230 return FALSE;
10231 }
10232 }
10233 s = ppc64_elf_tdata (ibfd)->relgot;
10234 if (s != NULL)
10235 {
eea6121a 10236 if (s->size == 0)
8423293d 10237 s->flags |= SEC_EXCLUDE;
e717da7e
AM		 10238 else
10239 {
eea6121a 10240 s->contents = bfd_zalloc (ibfd, s->size);
e717da7e
AM		 10241 if (s->contents == NULL)
10242 return FALSE;
10243 relocs = TRUE;
10244 s->reloc_count = 0;
10245 }
10246 }
10247 }
10248
e86ce104 10249 if (htab->elf.dynamic_sections_created)
5bd4f169 10250 {
e8910a83
AM		 10251 bfd_boolean tls_opt;
10252
5bd4f169
AM		 10253 /* Add some entries to the .dynamic section. We fill in the
10254 values later, in ppc64_elf_finish_dynamic_sections, but we
10255 must add the entries now so that we get the correct size for
10256 the .dynamic section. The DT_DEBUG entry is filled in by the
10257 dynamic linker and used by the debugger. */
dc810e39 10258#define add_dynamic_entry(TAG, VAL) \
5a580b3a 10259 _bfd_elf_add_dynamic_entry (info, TAG, VAL)
dc810e39 10260
0e1862bb 10261 if (bfd_link_executable (info))
5bd4f169 10262 {
dc810e39 10263 if (!add_dynamic_entry (DT_DEBUG, 0))
b34976b6 10264 return FALSE;
5bd4f169
AM		 10265 }
10266
33e44f2e 10267 if (htab->elf.splt != NULL && htab->elf.splt->size != 0)
5bd4f169 10268 {
dc810e39
AM		 10269 if (!add_dynamic_entry (DT_PLTGOT, 0)
10270 || !add_dynamic_entry (DT_PLTRELSZ, 0)
10271 || !add_dynamic_entry (DT_PLTREL, DT_RELA)
5d1634d7
AM		 10272 || !add_dynamic_entry (DT_JMPREL, 0)
10273 || !add_dynamic_entry (DT_PPC64_GLINK, 0))
b34976b6 10274 return FALSE;
5bd4f169
AM		 10275 }
10276
ee67d69a 10277 if (NO_OPD_RELOCS && abiversion (output_bfd) <= 1)
19397422
AM		 10278 {
10279 if (!add_dynamic_entry (DT_PPC64_OPD, 0)
10280 || !add_dynamic_entry (DT_PPC64_OPDSZ, 0))
b34976b6 10281 return FALSE;
19397422
AM		 10282 }
10283
7c9cf415 10284 tls_opt = (htab->params->tls_get_addr_opt
e8910a83
AM		 10285 && htab->tls_get_addr_fd != NULL
10286 && htab->tls_get_addr_fd->elf.plt.plist != NULL);
10287 if (tls_opt || !htab->opd_abi)
10288 {
10289 if (!add_dynamic_entry (DT_PPC64_OPT, tls_opt ? PPC64_OPT_TLS : 0))
10290 return FALSE;
10291 }
a7f2871e 10292
5bd4f169
AM		 10293 if (relocs)
10294 {
dc810e39
AM		 10295 if (!add_dynamic_entry (DT_RELA, 0)
10296 || !add_dynamic_entry (DT_RELASZ, 0)
10297 || !add_dynamic_entry (DT_RELAENT, sizeof (Elf64_External_Rela)))
b34976b6 10298 return FALSE;
5bd4f169 10299
65f38f15
AM		 10300 /* If any dynamic relocs apply to a read-only section,
10301 then we need a DT_TEXTREL entry. */
248866a8 10302 if ((info->flags & DF_TEXTREL) == 0)
a345bc8d 10303 elf_link_hash_traverse (&htab->elf, maybe_set_textrel, info);
5bd4f169 10304
65f38f15 10305 if ((info->flags & DF_TEXTREL) != 0)
5bd4f169 10306 {
65f38f15 10307 if (!add_dynamic_entry (DT_TEXTREL, 0))
b34976b6 10308 return FALSE;
5bd4f169 10309 }
5bd4f169 10310 }
5bd4f169 10311 }
65f38f15 10312#undef add_dynamic_entry
5bd4f169 10313
b34976b6 10314 return TRUE;
5bd4f169
AM		 10315}
10316
a345bc8d
AM		 10317/* Return TRUE if symbol should be hashed in the `.gnu.hash' section. */
10318
10319static bfd_boolean
10320ppc64_elf_hash_symbol (struct elf_link_hash_entry *h)
10321{
10322 if (h->plt.plist != NULL
10323 && !h->def_regular
10324 && !h->pointer_equality_needed)
10325 return FALSE;
10326
10327 return _bfd_elf_hash_symbol (h);
10328}
10329
721956f4 10330/* Determine the type of stub needed, if any, for a call. */
5bd4f169 10331
4ce794b7
AM		 10332static inline enum ppc_stub_type
10333ppc_type_of_stub (asection *input_sec,
10334 const Elf_Internal_Rela *rel,
10335 struct ppc_link_hash_entry **hash,
e054468f 10336 struct plt_entry **plt_ent,
6911b7dc
AM		 10337 bfd_vma destination,
10338 unsigned long local_off)
5bd4f169 10339{
721956f4
AM		 10340 struct ppc_link_hash_entry *h = *hash;
10341 bfd_vma location;
10342 bfd_vma branch_offset;
10343 bfd_vma max_branch_offset;
4ce794b7 10344 enum elf_ppc64_reloc_type r_type;
5bd4f169 10345
721956f4
AM		 10346 if (h != NULL)
10347 {
e054468f 10348 struct plt_entry *ent;
7fe2b9a6 10349 struct ppc_link_hash_entry *fdh = h;
b31867b6
AM		 10350 if (h->oh != NULL
10351 && h->oh->is_func_descriptor)
7b8f6675
AM		 10352 {
10353 fdh = ppc_follow_link (h->oh);
10354 *hash = fdh;
10355 }
8387904d 10356
e054468f
AM		 10357 for (ent = fdh->elf.plt.plist; ent != NULL; ent = ent->next)
10358 if (ent->addend == rel->r_addend
10359 && ent->plt.offset != (bfd_vma) -1)
10360 {
e054468f
AM		 10361 *plt_ent = ent;
10362 return ppc_stub_plt_call;
10363 }
5bd4f169 10364
7fe2b9a6
AM		 10365 /* Here, we know we don't have a plt entry. If we don't have a
10366 either a defined function descriptor or a defined entry symbol
10367 in a regular object file, then it is pointless trying to make
10368 any other type of stub. */
854b41e7
AM		 10369 if (!is_static_defined (&fdh->elf)
10370 && !is_static_defined (&h->elf))
721956f4 10371 return ppc_stub_none;
5d1634d7 10372 }
e054468f
AM		 10373 else if (elf_local_got_ents (input_sec->owner) != NULL)
10374 {
10375 Elf_Internal_Shdr *symtab_hdr = &elf_symtab_hdr (input_sec->owner);
10376 struct plt_entry **local_plt = (struct plt_entry **)
10377 elf_local_got_ents (input_sec->owner) + symtab_hdr->sh_info;
10378 unsigned long r_symndx = ELF64_R_SYM (rel->r_info);
10379
10380 if (local_plt[r_symndx] != NULL)
10381 {
10382 struct plt_entry *ent;
10383
10384 for (ent = local_plt[r_symndx]; ent != NULL; ent = ent->next)
10385 if (ent->addend == rel->r_addend
10386 && ent->plt.offset != (bfd_vma) -1)
10387 {
10388 *plt_ent = ent;
10389 return ppc_stub_plt_call;
10390 }
10391 }
10392 }
5d1634d7 10393
721956f4
AM		 10394 /* Determine where the call point is. */
10395 location = (input_sec->output_offset
10396 + input_sec->output_section->vma
10397 + rel->r_offset);
5d1634d7 10398
721956f4
AM		 10399 branch_offset = destination - location;
10400 r_type = ELF64_R_TYPE (rel->r_info);
5d1634d7 10401
721956f4
AM		 10402 /* Determine if a long branch stub is needed. */
10403 max_branch_offset = 1 << 25;
4ce794b7 10404 if (r_type != R_PPC64_REL24)
721956f4 10405 max_branch_offset = 1 << 15;
5d1634d7 10406
6911b7dc 10407 if (branch_offset + max_branch_offset >= 2 * max_branch_offset - local_off)
721956f4
AM		 10408 /* We need a stub. Figure out whether a long_branch or plt_branch
10409 is needed later. */
10410 return ppc_stub_long_branch;
5d1634d7 10411
721956f4 10412 return ppc_stub_none;
5d1634d7
AM		 10413}
10414
794e51c0
AM		 10415/* With power7 weakly ordered memory model, it is possible for ld.so
10416 to update a plt entry in one thread and have another thread see a
10417 stale zero toc entry. To avoid this we need some sort of acquire
10418 barrier in the call stub. One solution is to make the load of the
10419 toc word seem to appear to depend on the load of the function entry
10420 word. Another solution is to test for r2 being zero, and branch to
10421 the appropriate glink entry if so.
10422
10423 . fake dep barrier compare
71a39c98
AM		 10424 . ld 12,xxx(2) ld 12,xxx(2)
10425 . mtctr 12 mtctr 12
10426 . xor 11,12,12 ld 2,xxx+8(2)
794e51c0
AM		 10427 . add 2,2,11 cmpldi 2,0
10428 . ld 2,xxx+8(2) bnectr+
10429 . bctr b <glink_entry>
10430
10431 The solution involving the compare turns out to be faster, so
10432 that's what we use unless the branch won't reach. */
10433
10434#define ALWAYS_USE_FAKE_DEP 0
10435#define ALWAYS_EMIT_R2SAVE 0
5d1634d7 10436
5d1634d7
AM		 10437#define PPC_LO(v) ((v) & 0xffff)
10438#define PPC_HI(v) (((v) >> 16) & 0xffff)
10439#define PPC_HA(v) PPC_HI ((v) + 0x8000)
10440
794e51c0
AM		 10441static inline unsigned int
10442plt_stub_size (struct ppc_link_hash_table *htab,
10443 struct ppc_stub_hash_entry *stub_entry,
10444 bfd_vma off)
10445{
b9e5796b
AM		 10446 unsigned size = 12;
10447
10448 if (ALWAYS_EMIT_R2SAVE
10449 || stub_entry->stub_type == ppc_stub_plt_call_r2save)
10450 size += 4;
10451 if (PPC_HA (off) != 0)
794e51c0 10452 size += 4;
b9e5796b
AM		 10453 if (htab->opd_abi)
10454 {
10455 size += 4;
e7d1c40c 10456 if (htab->params->plt_static_chain)
b9e5796b 10457 size += 4;
bd4d2eaa
AM		 10458 if (htab->params->plt_thread_safe
10459 && htab->elf.dynamic_sections_created
10460 && stub_entry->h != NULL
10461 && stub_entry->h->elf.dynindx != -1)
b9e5796b 10462 size += 8;
e7d1c40c 10463 if (PPC_HA (off + 8 + 8 * htab->params->plt_static_chain) != PPC_HA (off))
b9e5796b
AM		 10464 size += 4;
10465 }
794e51c0
AM		 10466 if (stub_entry->h != NULL
10467 && (stub_entry->h == htab->tls_get_addr_fd
10468 || stub_entry->h == htab->tls_get_addr)
7c9cf415 10469 && htab->params->tls_get_addr_opt)
794e51c0
AM		 10470 size += 13 * 4;
10471 return size;
10472}
10473
10474/* If this stub would cross fewer 2**plt_stub_align boundaries if we align,
10475 then return the padding needed to do so. */
10476static inline unsigned int
10477plt_stub_pad (struct ppc_link_hash_table *htab,
10478 struct ppc_stub_hash_entry *stub_entry,
10479 bfd_vma plt_off)
10480{
e7d1c40c 10481 int stub_align = 1 << htab->params->plt_stub_align;
794e51c0 10482 unsigned stub_size = plt_stub_size (htab, stub_entry, plt_off);
6f20ed8a 10483 bfd_vma stub_off = stub_entry->group->stub_sec->size;
794e51c0
AM		 10484
10485 if (((stub_off + stub_size - 1) & -stub_align) - (stub_off & -stub_align)
e05fa0ba 10486 > ((stub_size - 1) & -stub_align))
794e51c0
AM		 10487 return stub_align - (stub_off & (stub_align - 1));
10488 return 0;
10489}
10490
10491/* Build a .plt call stub. */
10492
10493static inline bfd_byte *
10494build_plt_stub (struct ppc_link_hash_table *htab,
10495 struct ppc_stub_hash_entry *stub_entry,
10496 bfd_byte *p, bfd_vma offset, Elf_Internal_Rela *r)
10497{
e7d1c40c 10498 bfd *obfd = htab->params->stub_bfd;
b9e5796b 10499 bfd_boolean plt_load_toc = htab->opd_abi;
e7d1c40c 10500 bfd_boolean plt_static_chain = htab->params->plt_static_chain;
bd4d2eaa
AM		 10501 bfd_boolean plt_thread_safe = (htab->params->plt_thread_safe
10502 && htab->elf.dynamic_sections_created
10503 && stub_entry->h != NULL
10504 && stub_entry->h->elf.dynindx != -1);
794e51c0
AM		 10505 bfd_boolean use_fake_dep = plt_thread_safe;
10506 bfd_vma cmp_branch_off = 0;
10507
10508 if (!ALWAYS_USE_FAKE_DEP
b9e5796b 10509 && plt_load_toc
794e51c0 10510 && plt_thread_safe
bd4d2eaa
AM		 10511 && !((stub_entry->h == htab->tls_get_addr_fd
10512 || stub_entry->h == htab->tls_get_addr)
7c9cf415 10513 && htab->params->tls_get_addr_opt))
794e51c0
AM		 10514 {
10515 bfd_vma pltoff = stub_entry->plt_ent->plt.offset & ~1;
b9e5796b
AM		 10516 bfd_vma pltindex = ((pltoff - PLT_INITIAL_ENTRY_SIZE (htab))
10517 / PLT_ENTRY_SIZE (htab));
794e51c0
AM		 10518 bfd_vma glinkoff = GLINK_CALL_STUB_SIZE + pltindex * 8;
10519 bfd_vma to, from;
10520
68d62958
AM		 10521 if (pltindex > 32768)
10522 glinkoff += (pltindex - 32768) * 4;
794e51c0
AM		 10523 to = (glinkoff
10524 + htab->glink->output_offset
10525 + htab->glink->output_section->vma);
6f20ed8a 10526 from = (p - stub_entry->group->stub_sec->contents
794e51c0
AM		 10527 + 4 * (ALWAYS_EMIT_R2SAVE
10528 || stub_entry->stub_type == ppc_stub_plt_call_r2save)
10529 + 4 * (PPC_HA (offset) != 0)
10530 + 4 * (PPC_HA (offset + 8 + 8 * plt_static_chain)
10531 != PPC_HA (offset))
10532 + 4 * (plt_static_chain != 0)
10533 + 20
6f20ed8a
AM		 10534 + stub_entry->group->stub_sec->output_offset
10535 + stub_entry->group->stub_sec->output_section->vma);
794e51c0
AM		 10536 cmp_branch_off = to - from;
10537 use_fake_dep = cmp_branch_off + (1 << 25) >= (1 << 26);
10538 }
10539
ac2df442
AM		 10540 if (PPC_HA (offset) != 0)
10541 {
176a0d42
AM		 10542 if (r != NULL)
10543 {
794e51c0
AM		 10544 if (ALWAYS_EMIT_R2SAVE
10545 || stub_entry->stub_type == ppc_stub_plt_call_r2save)
10546 r[0].r_offset += 4;
176a0d42 10547 r[0].r_info = ELF64_R_INFO (0, R_PPC64_TOC16_HA);
3b421ab3 10548 r[1].r_offset = r[0].r_offset + 4;
176a0d42
AM		 10549 r[1].r_info = ELF64_R_INFO (0, R_PPC64_TOC16_LO_DS);
10550 r[1].r_addend = r[0].r_addend;
b9e5796b 10551 if (plt_load_toc)
176a0d42 10552 {
b9e5796b 10553 if (PPC_HA (offset + 8 + 8 * plt_static_chain) != PPC_HA (offset))
c7131b65 10554 {
b9e5796b
AM		 10555 r[2].r_offset = r[1].r_offset + 4;
10556 r[2].r_info = ELF64_R_INFO (0, R_PPC64_TOC16_LO);
10557 r[2].r_addend = r[0].r_addend;
10558 }
10559 else
10560 {
10561 r[2].r_offset = r[1].r_offset + 8 + 8 * use_fake_dep;
10562 r[2].r_info = ELF64_R_INFO (0, R_PPC64_TOC16_LO_DS);
10563 r[2].r_addend = r[0].r_addend + 8;
10564 if (plt_static_chain)
10565 {
10566 r[3].r_offset = r[2].r_offset + 4;
10567 r[3].r_info = ELF64_R_INFO (0, R_PPC64_TOC16_LO_DS);
10568 r[3].r_addend = r[0].r_addend + 16;
10569 }
c7131b65 10570 }
176a0d42
AM		 10571 }
10572 }
794e51c0
AM		 10573 if (ALWAYS_EMIT_R2SAVE
10574 || stub_entry->stub_type == ppc_stub_plt_call_r2save)
a078d95a 10575 bfd_put_32 (obfd, STD_R2_0R1 + STK_TOC (htab), p), p += 4;
397998fc
AM		 10576 if (plt_load_toc)
10577 {
10578 bfd_put_32 (obfd, ADDIS_R11_R2 | PPC_HA (offset), p), p += 4;
10579 bfd_put_32 (obfd, LD_R12_0R11 | PPC_LO (offset), p), p += 4;
10580 }
10581 else
10582 {
10583 bfd_put_32 (obfd, ADDIS_R12_R2 | PPC_HA (offset), p), p += 4;
10584 bfd_put_32 (obfd, LD_R12_0R12 | PPC_LO (offset), p), p += 4;
10585 }
b9e5796b
AM		 10586 if (plt_load_toc
10587 && PPC_HA (offset + 8 + 8 * plt_static_chain) != PPC_HA (offset))
ac2df442 10588 {
71a39c98 10589 bfd_put_32 (obfd, ADDI_R11_R11 | PPC_LO (offset), p), p += 4;
ac2df442
AM		 10590 offset = 0;
10591 }
71a39c98 10592 bfd_put_32 (obfd, MTCTR_R12, p), p += 4;
b9e5796b 10593 if (plt_load_toc)
794e51c0 10594 {
b9e5796b
AM		 10595 if (use_fake_dep)
10596 {
10597 bfd_put_32 (obfd, XOR_R2_R12_R12, p), p += 4;
10598 bfd_put_32 (obfd, ADD_R11_R11_R2, p), p += 4;
10599 }
10600 bfd_put_32 (obfd, LD_R2_0R11 | PPC_LO (offset + 8), p), p += 4;
10601 if (plt_static_chain)
10602 bfd_put_32 (obfd, LD_R11_0R11 | PPC_LO (offset + 16), p), p += 4;
794e51c0 10603 }
ac2df442
AM		 10604 }
10605 else
10606 {
176a0d42
AM		 10607 if (r != NULL)
10608 {
794e51c0
AM		 10609 if (ALWAYS_EMIT_R2SAVE
10610 || stub_entry->stub_type == ppc_stub_plt_call_r2save)
10611 r[0].r_offset += 4;
176a0d42 10612 r[0].r_info = ELF64_R_INFO (0, R_PPC64_TOC16_DS);
b9e5796b 10613 if (plt_load_toc)
176a0d42 10614 {
b9e5796b 10615 if (PPC_HA (offset + 8 + 8 * plt_static_chain) != PPC_HA (offset))
c7131b65 10616 {
b9e5796b
AM		 10617 r[1].r_offset = r[0].r_offset + 4;
10618 r[1].r_info = ELF64_R_INFO (0, R_PPC64_TOC16);
10619 r[1].r_addend = r[0].r_addend;
10620 }
10621 else
10622 {
10623 r[1].r_offset = r[0].r_offset + 8 + 8 * use_fake_dep;
10624 r[1].r_info = ELF64_R_INFO (0, R_PPC64_TOC16_DS);
10625 r[1].r_addend = r[0].r_addend + 8 + 8 * plt_static_chain;
10626 if (plt_static_chain)
10627 {
10628 r[2].r_offset = r[1].r_offset + 4;
10629 r[2].r_info = ELF64_R_INFO (0, R_PPC64_TOC16_DS);
10630 r[2].r_addend = r[0].r_addend + 8;
10631 }
c7131b65 10632 }
176a0d42
AM		 10633 }
10634 }
794e51c0
AM		 10635 if (ALWAYS_EMIT_R2SAVE
10636 || stub_entry->stub_type == ppc_stub_plt_call_r2save)
a078d95a 10637 bfd_put_32 (obfd, STD_R2_0R1 + STK_TOC (htab), p), p += 4;
71a39c98 10638 bfd_put_32 (obfd, LD_R12_0R2 | PPC_LO (offset), p), p += 4;
b9e5796b
AM		 10639 if (plt_load_toc
10640 && PPC_HA (offset + 8 + 8 * plt_static_chain) != PPC_HA (offset))
ac2df442
AM		 10641 {
10642 bfd_put_32 (obfd, ADDI_R2_R2 | PPC_LO (offset), p), p += 4;
10643 offset = 0;
10644 }
71a39c98 10645 bfd_put_32 (obfd, MTCTR_R12, p), p += 4;
b9e5796b 10646 if (plt_load_toc)
794e51c0 10647 {
b9e5796b
AM		 10648 if (use_fake_dep)
10649 {
10650 bfd_put_32 (obfd, XOR_R11_R12_R12, p), p += 4;
10651 bfd_put_32 (obfd, ADD_R2_R2_R11, p), p += 4;
10652 }
10653 if (plt_static_chain)
10654 bfd_put_32 (obfd, LD_R11_0R2 | PPC_LO (offset + 16), p), p += 4;
10655 bfd_put_32 (obfd, LD_R2_0R2 | PPC_LO (offset + 8), p), p += 4;
794e51c0 10656 }
ac2df442 10657 }
b9e5796b 10658 if (plt_load_toc && plt_thread_safe && !use_fake_dep)
794e51c0
AM		 10659 {
10660 bfd_put_32 (obfd, CMPLDI_R2_0, p), p += 4;
10661 bfd_put_32 (obfd, BNECTR_P4, p), p += 4;
22aa0c7e 10662 bfd_put_32 (obfd, B_DOT | (cmp_branch_off & 0x3fffffc), p), p += 4;
794e51c0
AM		 10663 }
10664 else
10665 bfd_put_32 (obfd, BCTR, p), p += 4;
5d1634d7
AM		 10666 return p;
10667}
10668
a7f2871e
AM		 10669/* Build a special .plt call stub for __tls_get_addr. */
10670
10671#define LD_R11_0R3 0xe9630000
10672#define LD_R12_0R3 0xe9830000
10673#define MR_R0_R3 0x7c601b78
10674#define CMPDI_R11_0 0x2c2b0000
10675#define ADD_R3_R12_R13 0x7c6c6a14
10676#define BEQLR 0x4d820020
10677#define MR_R3_R0 0x7c030378
a7f2871e
AM		 10678#define STD_R11_0R1 0xf9610000
10679#define BCTRL 0x4e800421
10680#define LD_R11_0R1 0xe9610000
a7f2871e
AM		 10681#define MTLR_R11 0x7d6803a6
10682
10683static inline bfd_byte *
794e51c0
AM		 10684build_tls_get_addr_stub (struct ppc_link_hash_table *htab,
10685 struct ppc_stub_hash_entry *stub_entry,
10686 bfd_byte *p, bfd_vma offset, Elf_Internal_Rela *r)
a7f2871e 10687{
e7d1c40c 10688 bfd *obfd = htab->params->stub_bfd;
794e51c0 10689
a7f2871e
AM		 10690 bfd_put_32 (obfd, LD_R11_0R3 + 0, p), p += 4;
10691 bfd_put_32 (obfd, LD_R12_0R3 + 8, p), p += 4;
10692 bfd_put_32 (obfd, MR_R0_R3, p), p += 4;
10693 bfd_put_32 (obfd, CMPDI_R11_0, p), p += 4;
10694 bfd_put_32 (obfd, ADD_R3_R12_R13, p), p += 4;
10695 bfd_put_32 (obfd, BEQLR, p), p += 4;
10696 bfd_put_32 (obfd, MR_R3_R0, p), p += 4;
10697 bfd_put_32 (obfd, MFLR_R11, p), p += 4;
a078d95a 10698 bfd_put_32 (obfd, STD_R11_0R1 + STK_LINKER (htab), p), p += 4;
a7f2871e
AM		 10699
10700 if (r != NULL)
10701 r[0].r_offset += 9 * 4;
794e51c0 10702 p = build_plt_stub (htab, stub_entry, p, offset, r);
a7f2871e
AM		 10703 bfd_put_32 (obfd, BCTRL, p - 4);
10704
a078d95a 10705 bfd_put_32 (obfd, LD_R2_0R1 + STK_TOC (htab), p), p += 4;
bd4d2eaa 10706 bfd_put_32 (obfd, LD_R11_0R1 + STK_LINKER (htab), p), p += 4;
a7f2871e
AM		 10707 bfd_put_32 (obfd, MTLR_R11, p), p += 4;
10708 bfd_put_32 (obfd, BLR, p), p += 4;
10709
10710 return p;
10711}
10712
176a0d42
AM		 10713static Elf_Internal_Rela *
10714get_relocs (asection *sec, int count)
10715{
10716 Elf_Internal_Rela *relocs;
10717 struct bfd_elf_section_data *elfsec_data;
10718
10719 elfsec_data = elf_section_data (sec);
10720 relocs = elfsec_data->relocs;
10721 if (relocs == NULL)
10722 {
10723 bfd_size_type relsize;
10724 relsize = sec->reloc_count * sizeof (*relocs);
10725 relocs = bfd_alloc (sec->owner, relsize);
10726 if (relocs == NULL)
10727 return NULL;
10728 elfsec_data->relocs = relocs;
d4730f92
BS		 10729 elfsec_data->rela.hdr = bfd_zalloc (sec->owner,
10730 sizeof (Elf_Internal_Shdr));
10731 if (elfsec_data->rela.hdr == NULL)
10732 return NULL;
10733 elfsec_data->rela.hdr->sh_size = (sec->reloc_count
10734 * sizeof (Elf64_External_Rela));
10735 elfsec_data->rela.hdr->sh_entsize = sizeof (Elf64_External_Rela);
176a0d42
AM		 10736 sec->reloc_count = 0;
10737 }
10738 relocs += sec->reloc_count;
10739 sec->reloc_count += count;
10740 return relocs;
10741}
10742
aa374f67 10743static bfd_vma
25f53a85 10744get_r2off (struct bfd_link_info *info,
aa374f67
AM		 10745 struct ppc_stub_hash_entry *stub_entry)
10746{
25f53a85 10747 struct ppc_link_hash_table *htab = ppc_hash_table (info);
6f20ed8a 10748 bfd_vma r2off = htab->sec_info[stub_entry->target_section->id].toc_off;
aa374f67
AM		 10749
10750 if (r2off == 0)
10751 {
10752 /* Support linking -R objects. Get the toc pointer from the
10753 opd entry. */
10754 char buf[8];
b9e5796b
AM		 10755 if (!htab->opd_abi)
10756 return r2off;
aa374f67
AM		 10757 asection *opd = stub_entry->h->elf.root.u.def.section;
10758 bfd_vma opd_off = stub_entry->h->elf.root.u.def.value;
10759
10760 if (strcmp (opd->name, ".opd") != 0
10761 || opd->reloc_count != 0)
10762 {
bc30df16 10763 info->callbacks->einfo (_("%P: cannot find opd entry toc for `%T'\n"),
25f53a85 10764 stub_entry->h->elf.root.root.string);
aa374f67 10765 bfd_set_error (bfd_error_bad_value);
a7c49797 10766 return (bfd_vma) -1;
aa374f67
AM		 10767 }
10768 if (!bfd_get_section_contents (opd->owner, opd, buf, opd_off + 8, 8))
a7c49797 10769 return (bfd_vma) -1;
aa374f67 10770 r2off = bfd_get_64 (opd->owner, buf);
25f53a85 10771 r2off -= elf_gp (info->output_bfd);
aa374f67 10772 }
6f20ed8a 10773 r2off -= htab->sec_info[stub_entry->group->link_sec->id].toc_off;
aa374f67
AM		 10774 return r2off;
10775}
10776
b34976b6 10777static bfd_boolean
4ce794b7 10778ppc_build_one_stub (struct bfd_hash_entry *gen_entry, void *in_arg)
5d1634d7 10779{
721956f4
AM		 10780 struct ppc_stub_hash_entry *stub_entry;
10781 struct ppc_branch_hash_entry *br_entry;
5d1634d7
AM		 10782 struct bfd_link_info *info;
10783 struct ppc_link_hash_table *htab;
721956f4
AM		 10784 bfd_byte *loc;
10785 bfd_byte *p;
ee75fd95 10786 bfd_vma dest, off;
721956f4 10787 int size;
176a0d42 10788 Elf_Internal_Rela *r;
e054468f 10789 asection *plt;
5d1634d7 10790
721956f4
AM		 10791 /* Massage our args to the form they really have. */
10792 stub_entry = (struct ppc_stub_hash_entry *) gen_entry;
4ce794b7 10793 info = in_arg;
5d1634d7 10794
5d1634d7 10795 htab = ppc_hash_table (info);
4dfe6ac6
NC		 10796 if (htab == NULL)
10797 return FALSE;
5d1634d7 10798
721956f4 10799 /* Make a note of the offset within the stubs for this entry. */
6f20ed8a
AM		 10800 stub_entry->stub_offset = stub_entry->group->stub_sec->size;
10801 loc = stub_entry->group->stub_sec->contents + stub_entry->stub_offset;
721956f4 10802
4ce794b7 10803 htab->stub_count[stub_entry->stub_type - 1] += 1;
721956f4 10804 switch (stub_entry->stub_type)
5d1634d7 10805 {
721956f4 10806 case ppc_stub_long_branch:
ad8e1ba5 10807 case ppc_stub_long_branch_r2off:
721956f4 10808 /* Branches are relative. This is where we are going to. */
6911b7dc
AM		 10809 dest = (stub_entry->target_value
10810 + stub_entry->target_section->output_offset
10811 + stub_entry->target_section->output_section->vma);
10812 dest += PPC64_LOCAL_ENTRY_OFFSET (stub_entry->other);
10813 off = dest;
5d1634d7 10814
721956f4
AM		 10815 /* And this is where we are coming from. */
10816 off -= (stub_entry->stub_offset
6f20ed8a
AM		 10817 + stub_entry->group->stub_sec->output_offset
10818 + stub_entry->group->stub_sec->output_section->vma);
e86ce104 10819
ac2df442
AM		 10820 size = 4;
10821 if (stub_entry->stub_type == ppc_stub_long_branch_r2off)
ad8e1ba5 10822 {
25f53a85 10823 bfd_vma r2off = get_r2off (info, stub_entry);
ad8e1ba5 10824
a7c49797 10825 if (r2off == (bfd_vma) -1)
aa374f67
AM		 10826 {
10827 htab->stub_error = TRUE;
10828 return FALSE;
10829 }
e7d1c40c 10830 bfd_put_32 (htab->params->stub_bfd, STD_R2_0R1 + STK_TOC (htab), loc);
ad8e1ba5 10831 loc += 4;
a7c49797 10832 size = 8;
ac2df442
AM		 10833 if (PPC_HA (r2off) != 0)
10834 {
e7d1c40c
AM		 10835 bfd_put_32 (htab->params->stub_bfd,
10836 ADDIS_R2_R2 | PPC_HA (r2off), loc);
ac2df442 10837 loc += 4;
a7c49797
AM		 10838 size += 4;
10839 }
10840 if (PPC_LO (r2off) != 0)
10841 {
10842 bfd_put_32 (htab->params->stub_bfd,
10843 ADDI_R2_R2 | PPC_LO (r2off), loc);
10844 loc += 4;
10845 size += 4;
ac2df442 10846 }
ac2df442 10847 off -= size - 4;
ad8e1ba5 10848 }
e7d1c40c 10849 bfd_put_32 (htab->params->stub_bfd, B_DOT | (off & 0x3fffffc), loc);
ad8e1ba5 10850
5c3dead3
AM		 10851 if (off + (1 << 25) >= (bfd_vma) (1 << 26))
10852 {
bc30df16
AM		 10853 info->callbacks->einfo
10854 (_("%P: long branch stub `%s' offset overflow\n"),
10855 stub_entry->root.string);
5c3dead3
AM		 10856 htab->stub_error = TRUE;
10857 return FALSE;
10858 }
ee75fd95
AM		 10859
10860 if (info->emitrelocations)
10861 {
6f20ed8a 10862 r = get_relocs (stub_entry->group->stub_sec, 1);
176a0d42
AM		 10863 if (r == NULL)
10864 return FALSE;
6f20ed8a 10865 r->r_offset = loc - stub_entry->group->stub_sec->contents;
ee75fd95
AM		 10866 r->r_info = ELF64_R_INFO (0, R_PPC64_REL24);
10867 r->r_addend = dest;
10868 if (stub_entry->h != NULL)
10869 {
10870 struct elf_link_hash_entry **hashes;
10871 unsigned long symndx;
10872 struct ppc_link_hash_entry *h;
10873
e7d1c40c 10874 hashes = elf_sym_hashes (htab->params->stub_bfd);
ee75fd95
AM		 10875 if (hashes == NULL)
10876 {
10877 bfd_size_type hsize;
10878
10879 hsize = (htab->stub_globals + 1) * sizeof (*hashes);
e7d1c40c 10880 hashes = bfd_zalloc (htab->params->stub_bfd, hsize);
ee75fd95
AM		 10881 if (hashes == NULL)
10882 return FALSE;
e7d1c40c 10883 elf_sym_hashes (htab->params->stub_bfd) = hashes;
ee75fd95
AM		 10884 htab->stub_globals = 1;
10885 }
10886 symndx = htab->stub_globals++;
10887 h = stub_entry->h;
10888 hashes[symndx] = &h->elf;
10889 r->r_info = ELF64_R_INFO (symndx, R_PPC64_REL24);
10890 if (h->oh != NULL && h->oh->is_func)
b31867b6 10891 h = ppc_follow_link (h->oh);
ee75fd95
AM		 10892 if (h->elf.root.u.def.section != stub_entry->target_section)
10893 /* H is an opd symbol. The addend must be zero. */
10894 r->r_addend = 0;
10895 else
10896 {
10897 off = (h->elf.root.u.def.value
10898 + h->elf.root.u.def.section->output_offset
10899 + h->elf.root.u.def.section->output_section->vma);
10900 r->r_addend -= off;
10901 }
10902 }
10903 }
721956f4 10904 break;
e86ce104 10905
721956f4 10906 case ppc_stub_plt_branch:
ad8e1ba5 10907 case ppc_stub_plt_branch_r2off:
721956f4
AM		 10908 br_entry = ppc_branch_hash_lookup (&htab->branch_hash_table,
10909 stub_entry->root.string + 9,
b34976b6 10910 FALSE, FALSE);
721956f4
AM		 10911 if (br_entry == NULL)
10912 {
8de848d8 10913 info->callbacks->einfo (_("%P: can't find branch stub `%s'\n"),
25f53a85 10914 stub_entry->root.string);
b34976b6
AM		 10915 htab->stub_error = TRUE;
10916 return FALSE;
721956f4
AM		 10917 }
10918
176a0d42
AM		 10919 dest = (stub_entry->target_value
10920 + stub_entry->target_section->output_offset
10921 + stub_entry->target_section->output_section->vma);
6911b7dc
AM		 10922 if (stub_entry->stub_type != ppc_stub_plt_branch_r2off)
10923 dest += PPC64_LOCAL_ENTRY_OFFSET (stub_entry->other);
721956f4 10924
176a0d42 10925 bfd_put_64 (htab->brlt->owner, dest,
4ce794b7 10926 htab->brlt->contents + br_entry->offset);
721956f4 10927
f94498ff 10928 if (br_entry->iter == htab->stub_iteration)
721956f4 10929 {
f94498ff 10930 br_entry->iter = 0;
84f5d08e 10931
f94498ff 10932 if (htab->relbrlt != NULL)
84f5d08e 10933 {
f94498ff
AM		 10934 /* Create a reloc for the branch lookup table entry. */
10935 Elf_Internal_Rela rela;
10936 bfd_byte *rl;
10937
10938 rela.r_offset = (br_entry->offset
10939 + htab->brlt->output_offset
10940 + htab->brlt->output_section->vma);
10941 rela.r_info = ELF64_R_INFO (0, R_PPC64_RELATIVE);
176a0d42 10942 rela.r_addend = dest;
f94498ff
AM		 10943
10944 rl = htab->relbrlt->contents;
10945 rl += (htab->relbrlt->reloc_count++
10946 * sizeof (Elf64_External_Rela));
10947 bfd_elf64_swap_reloca_out (htab->relbrlt->owner, &rela, rl);
10948 }
10949 else if (info->emitrelocations)
10950 {
176a0d42
AM		 10951 r = get_relocs (htab->brlt, 1);
10952 if (r == NULL)
10953 return FALSE;
10954 /* brlt, being SEC_LINKER_CREATED does not go through the
10955 normal reloc processing. Symbols and offsets are not
10956 translated from input file to output file form, so
10957 set up the offset per the output file. */
f94498ff
AM		 10958 r->r_offset = (br_entry->offset
10959 + htab->brlt->output_offset
10960 + htab->brlt->output_section->vma);
10961 r->r_info = ELF64_R_INFO (0, R_PPC64_RELATIVE);
176a0d42 10962 r->r_addend = dest;
84f5d08e 10963 }
84f5d08e 10964 }
721956f4 10965
176a0d42
AM		 10966 dest = (br_entry->offset
10967 + htab->brlt->output_offset
10968 + htab->brlt->output_section->vma);
10969
10970 off = (dest
4ce794b7 10971 - elf_gp (htab->brlt->output_section->owner)
6f20ed8a 10972 - htab->sec_info[stub_entry->group->link_sec->id].toc_off);
721956f4 10973
ad8e1ba5 10974 if (off + 0x80008000 > 0xffffffff || (off & 7) != 0)
5d1634d7 10975 {
25f53a85 10976 info->callbacks->einfo
bc30df16 10977 (_("%P: linkage table error against `%T'\n"),
721956f4 10978 stub_entry->root.string);
5d1634d7 10979 bfd_set_error (bfd_error_bad_value);
b34976b6
AM		 10980 htab->stub_error = TRUE;
10981 return FALSE;
5d1634d7 10982 }
41bd81ab 10983
176a0d42
AM		 10984 if (info->emitrelocations)
10985 {
6f20ed8a 10986 r = get_relocs (stub_entry->group->stub_sec, 1 + (PPC_HA (off) != 0));
176a0d42
AM		 10987 if (r == NULL)
10988 return FALSE;
6f20ed8a 10989 r[0].r_offset = loc - stub_entry->group->stub_sec->contents;
7cfbafbc
AM		 10990 if (bfd_big_endian (info->output_bfd))
10991 r[0].r_offset += 2;
00f412ee 10992 if (stub_entry->stub_type == ppc_stub_plt_branch_r2off)
176a0d42
AM		 10993 r[0].r_offset += 4;
10994 r[0].r_info = ELF64_R_INFO (0, R_PPC64_TOC16_DS);
10995 r[0].r_addend = dest;
10996 if (PPC_HA (off) != 0)
10997 {
10998 r[0].r_info = ELF64_R_INFO (0, R_PPC64_TOC16_HA);
10999 r[1].r_offset = r[0].r_offset + 4;
11000 r[1].r_info = ELF64_R_INFO (0, R_PPC64_TOC16_LO_DS);
11001 r[1].r_addend = r[0].r_addend;
11002 }
11003 }
11004
00f412ee 11005 if (stub_entry->stub_type != ppc_stub_plt_branch_r2off)
ad8e1ba5 11006 {
176a0d42 11007 if (PPC_HA (off) != 0)
ac2df442
AM		 11008 {
11009 size = 16;
e7d1c40c 11010 bfd_put_32 (htab->params->stub_bfd,
397998fc 11011 ADDIS_R12_R2 | PPC_HA (off), loc);
ac2df442 11012 loc += 4;
e7d1c40c 11013 bfd_put_32 (htab->params->stub_bfd,
397998fc 11014 LD_R12_0R12 | PPC_LO (off), loc);
ac2df442
AM		 11015 }
11016 else
11017 {
11018 size = 12;
e7d1c40c
AM		 11019 bfd_put_32 (htab->params->stub_bfd,
11020 LD_R12_0R2 | PPC_LO (off), loc);
ac2df442 11021 }
ad8e1ba5
AM		 11022 }
11023 else
11024 {
25f53a85 11025 bfd_vma r2off = get_r2off (info, stub_entry);
aa374f67 11026
a7c49797 11027 if (r2off == (bfd_vma) -1)
aa374f67
AM		 11028 {
11029 htab->stub_error = TRUE;
11030 return FALSE;
11031 }
ad8e1ba5 11032
e7d1c40c 11033 bfd_put_32 (htab->params->stub_bfd, STD_R2_0R1 + STK_TOC (htab), loc);
ad8e1ba5 11034 loc += 4;
00f412ee 11035 size = 16;
176a0d42 11036 if (PPC_HA (off) != 0)
ac2df442
AM		 11037 {
11038 size += 4;
e7d1c40c 11039 bfd_put_32 (htab->params->stub_bfd,
397998fc 11040 ADDIS_R12_R2 | PPC_HA (off), loc);
ac2df442 11041 loc += 4;
e7d1c40c 11042 bfd_put_32 (htab->params->stub_bfd,
397998fc 11043 LD_R12_0R12 | PPC_LO (off), loc);
ac2df442
AM		 11044 }
11045 else
e7d1c40c 11046 bfd_put_32 (htab->params->stub_bfd, LD_R12_0R2 | PPC_LO (off), loc);
ac2df442
AM		 11047
11048 if (PPC_HA (r2off) != 0)
11049 {
11050 size += 4;
00f412ee 11051 loc += 4;
e7d1c40c
AM		 11052 bfd_put_32 (htab->params->stub_bfd,
11053 ADDIS_R2_R2 | PPC_HA (r2off), loc);
00f412ee
AM		 11054 }
11055 if (PPC_LO (r2off) != 0)
11056 {
11057 size += 4;
ac2df442 11058 loc += 4;
e7d1c40c
AM		 11059 bfd_put_32 (htab->params->stub_bfd,
11060 ADDI_R2_R2 | PPC_LO (r2off), loc);
ac2df442 11061 }
ad8e1ba5
AM		 11062 }
11063 loc += 4;
e7d1c40c 11064 bfd_put_32 (htab->params->stub_bfd, MTCTR_R12, loc);
ad8e1ba5 11065 loc += 4;
e7d1c40c 11066 bfd_put_32 (htab->params->stub_bfd, BCTR, loc);
721956f4 11067 break;
5d1634d7 11068
721956f4 11069 case ppc_stub_plt_call:
794e51c0 11070 case ppc_stub_plt_call_r2save:
e054468f 11071 if (stub_entry->h != NULL
b31867b6
AM		 11072 && stub_entry->h->is_func_descriptor
11073 && stub_entry->h->oh != NULL)
c862ae31 11074 {
b31867b6
AM		 11075 struct ppc_link_hash_entry *fh = ppc_follow_link (stub_entry->h->oh);
11076
11077 /* If the old-ABI "dot-symbol" is undefined make it weak so
6f20ed8a 11078 we don't get a link error from RELOC_FOR_GLOBAL_SYMBOL. */
b31867b6
AM		 11079 if (fh->elf.root.type == bfd_link_hash_undefined)
11080 fh->elf.root.type = bfd_link_hash_undefweak;
9507a174
AM		 11081 /* Stop undo_symbol_twiddle changing it back to undefined. */
11082 fh->was_undefined = 0;
c862ae31
AM		 11083 }
11084
721956f4 11085 /* Now build the stub. */
e054468f 11086 dest = stub_entry->plt_ent->plt.offset & ~1;
176a0d42 11087 if (dest >= (bfd_vma) -2)
721956f4
AM		 11088 abort ();
11089
33e44f2e 11090 plt = htab->elf.splt;
25f23106
AM		 11091 if (!htab->elf.dynamic_sections_created
11092 || stub_entry->h == NULL
11093 || stub_entry->h->elf.dynindx == -1)
33e44f2e 11094 plt = htab->elf.iplt;
e054468f
AM		 11095
11096 dest += plt->output_offset + plt->output_section->vma;
11097
11098 if (stub_entry->h == NULL
11099 && (stub_entry->plt_ent->plt.offset & 1) == 0)
11100 {
11101 Elf_Internal_Rela rela;
11102 bfd_byte *rl;
11103
11104 rela.r_offset = dest;
ee67d69a
AM		 11105 if (htab->opd_abi)
11106 rela.r_info = ELF64_R_INFO (0, R_PPC64_JMP_IREL);
11107 else
11108 rela.r_info = ELF64_R_INFO (0, R_PPC64_IRELATIVE);
e054468f
AM		 11109 rela.r_addend = (stub_entry->target_value
11110 + stub_entry->target_section->output_offset
11111 + stub_entry->target_section->output_section->vma);
11112
33e44f2e
AM		 11113 rl = (htab->elf.irelplt->contents
11114 + (htab->elf.irelplt->reloc_count++
25f23106
AM		 11115 * sizeof (Elf64_External_Rela)));
11116 bfd_elf64_swap_reloca_out (info->output_bfd, &rela, rl);
e054468f
AM		 11117 stub_entry->plt_ent->plt.offset |= 1;
11118 }
176a0d42
AM		 11119
11120 off = (dest
e054468f 11121 - elf_gp (plt->output_section->owner)
6f20ed8a 11122 - htab->sec_info[stub_entry->group->link_sec->id].toc_off);
721956f4 11123
ad8e1ba5 11124 if (off + 0x80008000 > 0xffffffff || (off & 7) != 0)
721956f4 11125 {
25f53a85 11126 info->callbacks->einfo
bc30df16 11127 (_("%P: linkage table error against `%T'\n"),
e054468f
AM		 11128 stub_entry->h != NULL
11129 ? stub_entry->h->elf.root.root.string
11130 : "<local sym>");
721956f4 11131 bfd_set_error (bfd_error_bad_value);
b34976b6
AM		 11132 htab->stub_error = TRUE;
11133 return FALSE;
721956f4
AM		 11134 }
11135
e7d1c40c 11136 if (htab->params->plt_stub_align != 0)
794e51c0
AM		 11137 {
11138 unsigned pad = plt_stub_pad (htab, stub_entry, off);
11139
6f20ed8a
AM		 11140 stub_entry->group->stub_sec->size += pad;
11141 stub_entry->stub_offset = stub_entry->group->stub_sec->size;
794e51c0
AM		 11142 loc += pad;
11143 }
11144
176a0d42
AM		 11145 r = NULL;
11146 if (info->emitrelocations)
11147 {
6f20ed8a 11148 r = get_relocs (stub_entry->group->stub_sec,
3ba720c7
AM		 11149 ((PPC_HA (off) != 0)
11150 + (htab->opd_abi
e7d1c40c 11151 ? 2 + (htab->params->plt_static_chain
3ba720c7
AM		 11152 && PPC_HA (off + 16) == PPC_HA (off))
11153 : 1)));
176a0d42
AM		 11154 if (r == NULL)
11155 return FALSE;
6f20ed8a 11156 r[0].r_offset = loc - stub_entry->group->stub_sec->contents;
7cfbafbc
AM		 11157 if (bfd_big_endian (info->output_bfd))
11158 r[0].r_offset += 2;
176a0d42
AM		 11159 r[0].r_addend = dest;
11160 }
a7f2871e
AM		 11161 if (stub_entry->h != NULL
11162 && (stub_entry->h == htab->tls_get_addr_fd
11163 || stub_entry->h == htab->tls_get_addr)
7c9cf415 11164 && htab->params->tls_get_addr_opt)
794e51c0 11165 p = build_tls_get_addr_stub (htab, stub_entry, loc, off, r);
a7f2871e 11166 else
794e51c0 11167 p = build_plt_stub (htab, stub_entry, loc, off, r);
721956f4
AM		 11168 size = p - loc;
11169 break;
11170
a4b6fadd
AM		 11171 case ppc_stub_save_res:
11172 return TRUE;
11173
721956f4
AM		 11174 default:
11175 BFD_FAIL ();
b34976b6 11176 return FALSE;
721956f4
AM		 11177 }
11178
6f20ed8a 11179 stub_entry->group->stub_sec->size += size;
97b639ba 11180
e7d1c40c 11181 if (htab->params->emit_stub_syms)
97b639ba
AM		 11182 {
11183 struct elf_link_hash_entry *h;
ee75fd95
AM		 11184 size_t len1, len2;
11185 char *name;
11186 const char *const stub_str[] = { "long_branch",
11187 "long_branch_r2off",
11188 "plt_branch",
11189 "plt_branch_r2off",
794e51c0 11190 "plt_call",
ee75fd95
AM		 11191 "plt_call" };
11192
11193 len1 = strlen (stub_str[stub_entry->stub_type - 1]);
11194 len2 = strlen (stub_entry->root.string);
11195 name = bfd_malloc (len1 + len2 + 2);
11196 if (name == NULL)
11197 return FALSE;
11198 memcpy (name, stub_entry->root.string, 9);
11199 memcpy (name + 9, stub_str[stub_entry->stub_type - 1], len1);
11200 memcpy (name + len1 + 9, stub_entry->root.string + 8, len2 - 8 + 1);
11201 h = elf_link_hash_lookup (&htab->elf, name, TRUE, FALSE, FALSE);
97b639ba
AM		 11202 if (h == NULL)
11203 return FALSE;
11204 if (h->root.type == bfd_link_hash_new)
11205 {
11206 h->root.type = bfd_link_hash_defined;
6f20ed8a 11207 h->root.u.def.section = stub_entry->group->stub_sec;
97b639ba 11208 h->root.u.def.value = stub_entry->stub_offset;
f5385ebf
AM		 11209 h->ref_regular = 1;
11210 h->def_regular = 1;
11211 h->ref_regular_nonweak = 1;
11212 h->forced_local = 1;
11213 h->non_elf = 0;
2ec55de3 11214 h->root.linker_def = 1;
97b639ba
AM		 11215 }
11216 }
11217
b34976b6 11218 return TRUE;
721956f4
AM		 11219}
11220
11221/* As above, but don't actually build the stub. Just bump offset so
11222 we know stub section sizes, and select plt_branch stubs where
11223 long_branch stubs won't do. */
11224
b34976b6 11225static bfd_boolean
4ce794b7 11226ppc_size_one_stub (struct bfd_hash_entry *gen_entry, void *in_arg)
721956f4
AM		 11227{
11228 struct ppc_stub_hash_entry *stub_entry;
63bc6f6c 11229 struct bfd_link_info *info;
721956f4
AM		 11230 struct ppc_link_hash_table *htab;
11231 bfd_vma off;
11232 int size;
11233
11234 /* Massage our args to the form they really have. */
11235 stub_entry = (struct ppc_stub_hash_entry *) gen_entry;
63bc6f6c
AM		 11236 info = in_arg;
11237
11238 htab = ppc_hash_table (info);
4dfe6ac6
NC		 11239 if (htab == NULL)
11240 return FALSE;
721956f4 11241
a4b6fadd
AM		 11242 if (stub_entry->h != NULL
11243 && stub_entry->h->save_res
11244 && stub_entry->h->elf.root.type == bfd_link_hash_defined
11245 && stub_entry->h->elf.root.u.def.section == htab->sfpr)
11246 {
11247 /* Don't make stubs to out-of-line register save/restore
11248 functions. Instead, emit copies of the functions. */
11249 stub_entry->group->needs_save_res = 1;
11250 stub_entry->stub_type = ppc_stub_save_res;
11251 return TRUE;
11252 }
11253
794e51c0
AM		 11254 if (stub_entry->stub_type == ppc_stub_plt_call
11255 || stub_entry->stub_type == ppc_stub_plt_call_r2save)
721956f4 11256 {
e054468f
AM		 11257 asection *plt;
11258 off = stub_entry->plt_ent->plt.offset & ~(bfd_vma) 1;
58ac9f71 11259 if (off >= (bfd_vma) -2)
411e1bfb 11260 abort ();
33e44f2e 11261 plt = htab->elf.splt;
25f23106
AM		 11262 if (!htab->elf.dynamic_sections_created
11263 || stub_entry->h == NULL
11264 || stub_entry->h->elf.dynindx == -1)
33e44f2e 11265 plt = htab->elf.iplt;
e054468f
AM		 11266 off += (plt->output_offset
11267 + plt->output_section->vma
11268 - elf_gp (plt->output_section->owner)
6f20ed8a 11269 - htab->sec_info[stub_entry->group->link_sec->id].toc_off);
721956f4 11270
794e51c0 11271 size = plt_stub_size (htab, stub_entry, off);
e7d1c40c 11272 if (htab->params->plt_stub_align)
794e51c0 11273 size += plt_stub_pad (htab, stub_entry, off);
176a0d42
AM		 11274 if (info->emitrelocations)
11275 {
6f20ed8a 11276 stub_entry->group->stub_sec->reloc_count
b9e5796b
AM		 11277 += ((PPC_HA (off) != 0)
11278 + (htab->opd_abi
e7d1c40c 11279 ? 2 + (htab->params->plt_static_chain
b9e5796b
AM		 11280 && PPC_HA (off + 16) == PPC_HA (off))
11281 : 1));
6f20ed8a 11282 stub_entry->group->stub_sec->flags |= SEC_RELOC;
176a0d42 11283 }
721956f4
AM		 11284 }
11285 else
11286 {
ad8e1ba5
AM		 11287 /* ppc_stub_long_branch or ppc_stub_plt_branch, or their r2off
11288 variants. */
ac2df442 11289 bfd_vma r2off = 0;
6911b7dc 11290 bfd_vma local_off = 0;
ac2df442 11291
721956f4
AM		 11292 off = (stub_entry->target_value
11293 + stub_entry->target_section->output_offset
11294 + stub_entry->target_section->output_section->vma);
6f20ed8a
AM		 11295 off -= (stub_entry->group->stub_sec->size
11296 + stub_entry->group->stub_sec->output_offset
11297 + stub_entry->group->stub_sec->output_section->vma);
721956f4 11298
ad8e1ba5
AM		 11299 /* Reset the stub type from the plt variant in case we now
11300 can reach with a shorter stub. */
11301 if (stub_entry->stub_type >= ppc_stub_plt_branch)
11302 stub_entry->stub_type += ppc_stub_long_branch - ppc_stub_plt_branch;
11303
11304 size = 4;
11305 if (stub_entry->stub_type == ppc_stub_long_branch_r2off)
11306 {
25f53a85 11307 r2off = get_r2off (info, stub_entry);
a7c49797 11308 if (r2off == (bfd_vma) -1)
aa374f67
AM		 11309 {
11310 htab->stub_error = TRUE;
11311 return FALSE;
11312 }
a7c49797 11313 size = 8;
ac2df442 11314 if (PPC_HA (r2off) != 0)
a7c49797
AM		 11315 size += 4;
11316 if (PPC_LO (r2off) != 0)
11317 size += 4;
ac2df442 11318 off -= size - 4;
ad8e1ba5
AM		 11319 }
11320
6911b7dc
AM		 11321 local_off = PPC64_LOCAL_ENTRY_OFFSET (stub_entry->other);
11322
b9e5796b
AM		 11323 /* If the branch offset if too big, use a ppc_stub_plt_branch.
11324 Do the same for -R objects without function descriptors. */
11325 if (off + (1 << 25) >= (bfd_vma) (1 << 26) - local_off
11326 || (stub_entry->stub_type == ppc_stub_long_branch_r2off
a7c49797
AM		 11327 && r2off == 0
11328 && htab->sec_info[stub_entry->target_section->id].toc_off == 0))
721956f4
AM		 11329 {
11330 struct ppc_branch_hash_entry *br_entry;
11331
11332 br_entry = ppc_branch_hash_lookup (&htab->branch_hash_table,
11333 stub_entry->root.string + 9,
b34976b6 11334 TRUE, FALSE);
721956f4
AM		 11335 if (br_entry == NULL)
11336 {
8de848d8 11337 info->callbacks->einfo (_("%P: can't build branch stub `%s'\n"),
25f53a85 11338 stub_entry->root.string);
b34976b6
AM		 11339 htab->stub_error = TRUE;
11340 return FALSE;
721956f4
AM		 11341 }
11342
11343 if (br_entry->iter != htab->stub_iteration)
11344 {
11345 br_entry->iter = htab->stub_iteration;
eea6121a
AM		 11346 br_entry->offset = htab->brlt->size;
11347 htab->brlt->size += 8;
63bc6f6c 11348
ee75fd95 11349 if (htab->relbrlt != NULL)
eea6121a 11350 htab->relbrlt->size += sizeof (Elf64_External_Rela);
84f5d08e
AM		 11351 else if (info->emitrelocations)
11352 {
11353 htab->brlt->reloc_count += 1;
11354 htab->brlt->flags |= SEC_RELOC;
11355 }
721956f4 11356 }
ad8e1ba5
AM		 11357
11358 stub_entry->stub_type += ppc_stub_plt_branch - ppc_stub_long_branch;
ac2df442
AM		 11359 off = (br_entry->offset
11360 + htab->brlt->output_offset
11361 + htab->brlt->output_section->vma
11362 - elf_gp (htab->brlt->output_section->owner)
6f20ed8a 11363 - htab->sec_info[stub_entry->group->link_sec->id].toc_off);
ac2df442 11364
176a0d42
AM		 11365 if (info->emitrelocations)
11366 {
6f20ed8a
AM		 11367 stub_entry->group->stub_sec->reloc_count
11368 += 1 + (PPC_HA (off) != 0);
11369 stub_entry->group->stub_sec->flags |= SEC_RELOC;
176a0d42
AM		 11370 }
11371
00f412ee 11372 if (stub_entry->stub_type != ppc_stub_plt_branch_r2off)
ac2df442
AM		 11373 {
11374 size = 12;
176a0d42 11375 if (PPC_HA (off) != 0)
ac2df442
AM		 11376 size = 16;
11377 }
11378 else
11379 {
00f412ee 11380 size = 16;
176a0d42 11381 if (PPC_HA (off) != 0)
ac2df442
AM		 11382 size += 4;
11383
11384 if (PPC_HA (r2off) != 0)
11385 size += 4;
00f412ee
AM		 11386 if (PPC_LO (r2off) != 0)
11387 size += 4;
ac2df442 11388 }
721956f4 11389 }
84f5d08e
AM		 11390 else if (info->emitrelocations)
11391 {
6f20ed8a
AM		 11392 stub_entry->group->stub_sec->reloc_count += 1;
11393 stub_entry->group->stub_sec->flags |= SEC_RELOC;
84f5d08e 11394 }
721956f4
AM		 11395 }
11396
6f20ed8a 11397 stub_entry->group->stub_sec->size += size;
b34976b6 11398 return TRUE;
721956f4
AM		 11399}
11400
11401/* Set up various things so that we can make a list of input sections
11402 for each output section included in the link. Returns -1 on error,
cedb70c5 11403 0 when no stubs will be needed, and 1 on success. */
721956f4
AM		 11404
11405int
e7d1c40c 11406ppc64_elf_setup_section_lists (struct bfd_link_info *info)
721956f4 11407{
6f20ed8a 11408 unsigned int id;
721956f4
AM		 11409 bfd_size_type amt;
11410 struct ppc_link_hash_table *htab = ppc_hash_table (info);
11411
4dfe6ac6
NC		 11412 if (htab == NULL)
11413 return -1;
4c52953f 11414
6f20ed8a
AM		 11415 htab->sec_info_arr_size = bfd_get_next_section_id ();
11416 amt = sizeof (*htab->sec_info) * (htab->sec_info_arr_size);
11417 htab->sec_info = bfd_zmalloc (amt);
11418 if (htab->sec_info == NULL)
721956f4
AM		 11419 return -1;
11420
3d6f9012
AM		 11421 /* Set toc_off for com, und, abs and ind sections. */
11422 for (id = 0; id < 3; id++)
6f20ed8a 11423 htab->sec_info[id].toc_off = TOC_BASE_OFF;
734b6cf9 11424
721956f4
AM		 11425 return 1;
11426}
11427
927be08e
AM		 11428/* Set up for first pass at multitoc partitioning. */
11429
11430void
11431ppc64_elf_start_multitoc_partition (struct bfd_link_info *info)
11432{
11433 struct ppc_link_hash_table *htab = ppc_hash_table (info);
11434
1c865ab2 11435 htab->toc_curr = ppc64_elf_set_toc (info, info->output_bfd);
927be08e
AM		 11436 htab->toc_bfd = NULL;
11437 htab->toc_first_sec = NULL;
11438}
11439
e717da7e
AM		 11440/* The linker repeatedly calls this function for each TOC input section
11441 and linker generated GOT section. Group input bfds such that the toc
927be08e 11442 within a group is less than 64k in size. */
ad8e1ba5 11443
927be08e 11444bfd_boolean
4ce794b7 11445ppc64_elf_next_toc_section (struct bfd_link_info *info, asection *isec)
ad8e1ba5
AM		 11446{
11447 struct ppc_link_hash_table *htab = ppc_hash_table (info);
d77c8a4b 11448 bfd_vma addr, off, limit;
ad8e1ba5 11449
4dfe6ac6
NC		 11450 if (htab == NULL)
11451 return FALSE;
11452
927be08e 11453 if (!htab->second_toc_pass)
4c52953f 11454 {
927be08e 11455 /* Keep track of the first .toc or .got section for this input bfd. */
a4fd3de5
AM		 11456 bfd_boolean new_bfd = htab->toc_bfd != isec->owner;
11457
11458 if (new_bfd)
bf102f86
AM		 11459 {
11460 htab->toc_bfd = isec->owner;
11461 htab->toc_first_sec = isec;
11462 }
927be08e 11463
bf102f86
AM		 11464 addr = isec->output_offset + isec->output_section->vma;
11465 off = addr - htab->toc_curr;
d77c8a4b
AM		 11466 limit = 0x80008000;
11467 if (ppc64_elf_tdata (isec->owner)->has_small_toc_reloc)
11468 limit = 0x10000;
11469 if (off + isec->size > limit)
bf102f86
AM		 11470 {
11471 addr = (htab->toc_first_sec->output_offset
11472 + htab->toc_first_sec->output_section->vma);
11473 htab->toc_curr = addr;
a27e685f 11474 htab->toc_curr &= -TOC_BASE_ALIGN;
bf102f86 11475 }
99877b66 11476
927be08e
AM		 11477 /* toc_curr is the base address of this toc group. Set elf_gp
11478 for the input section to be the offset relative to the
11479 output toc base plus 0x8000. Making the input elf_gp an
11480 offset allows us to move the toc as a whole without
11481 recalculating input elf_gp. */
11482 off = htab->toc_curr - elf_gp (isec->output_section->owner);
11483 off += TOC_BASE_OFF;
11484
11485 /* Die if someone uses a linker script that doesn't keep input
11486 file .toc and .got together. */
a4fd3de5
AM		 11487 if (new_bfd
11488 && elf_gp (isec->owner) != 0
927be08e
AM		 11489 && elf_gp (isec->owner) != off)
11490 return FALSE;
11491
11492 elf_gp (isec->owner) = off;
11493 return TRUE;
4c52953f 11494 }
927be08e
AM		 11495
11496 /* During the second pass toc_first_sec points to the start of
11497 a toc group, and toc_curr is used to track the old elf_gp.
11498 We use toc_bfd to ensure we only look at each bfd once. */
11499 if (htab->toc_bfd == isec->owner)
11500 return TRUE;
11501 htab->toc_bfd = isec->owner;
11502
11503 if (htab->toc_first_sec == NULL
11504 || htab->toc_curr != elf_gp (isec->owner))
11505 {
11506 htab->toc_curr = elf_gp (isec->owner);
11507 htab->toc_first_sec = isec;
11508 }
11509 addr = (htab->toc_first_sec->output_offset
11510 + htab->toc_first_sec->output_section->vma);
11511 off = addr - elf_gp (isec->output_section->owner) + TOC_BASE_OFF;
11512 elf_gp (isec->owner) = off;
11513
11514 return TRUE;
ad8e1ba5
AM		 11515}
11516
927be08e
AM		 11517/* Called via elf_link_hash_traverse to merge GOT entries for global
11518 symbol H. */
11519
11520static bfd_boolean
11521merge_global_got (struct elf_link_hash_entry *h, void *inf ATTRIBUTE_UNUSED)
11522{
11523 if (h->root.type == bfd_link_hash_indirect)
11524 return TRUE;
11525
927be08e
AM		 11526 merge_got_entries (&h->got.glist);
11527
11528 return TRUE;
11529}
11530
11531/* Called via elf_link_hash_traverse to allocate GOT entries for global
11532 symbol H. */
11533
11534static bfd_boolean
11535reallocate_got (struct elf_link_hash_entry *h, void *inf)
11536{
11537 struct got_entry *gent;
11538
11539 if (h->root.type == bfd_link_hash_indirect)
11540 return TRUE;
11541
927be08e
AM		 11542 for (gent = h->got.glist; gent != NULL; gent = gent->next)
11543 if (!gent->is_indirect)
11544 allocate_got (h, (struct bfd_link_info *) inf, gent);
11545 return TRUE;
11546}
11547
11548/* Called on the first multitoc pass after the last call to
11549 ppc64_elf_next_toc_section. This function removes duplicate GOT
11550 entries. */
11551
11552bfd_boolean
11553ppc64_elf_layout_multitoc (struct bfd_link_info *info)
ad8e1ba5
AM		 11554{
11555 struct ppc_link_hash_table *htab = ppc_hash_table (info);
927be08e
AM		 11556 struct bfd *ibfd, *ibfd2;
11557 bfd_boolean done_something;
11558
11559 htab->multi_toc_needed = htab->toc_curr != elf_gp (info->output_bfd);
ad8e1ba5 11560
7865406b
AM		 11561 if (!htab->do_multi_toc)
11562 return FALSE;
11563
d0fae19d 11564 /* Merge global sym got entries within a toc group. */
927be08e
AM		 11565 elf_link_hash_traverse (&htab->elf, merge_global_got, info);
11566
11567 /* And tlsld_got. */
c72f2fb2 11568 for (ibfd = info->input_bfds; ibfd != NULL; ibfd = ibfd->link.next)
927be08e
AM		 11569 {
11570 struct got_entry *ent, *ent2;
11571
11572 if (!is_ppc64_elf (ibfd))
11573 continue;
11574
11575 ent = ppc64_tlsld_got (ibfd);
11576 if (!ent->is_indirect
11577 && ent->got.offset != (bfd_vma) -1)
11578 {
c72f2fb2 11579 for (ibfd2 = ibfd->link.next; ibfd2 != NULL; ibfd2 = ibfd2->link.next)
927be08e
AM		 11580 {
11581 if (!is_ppc64_elf (ibfd2))
11582 continue;
11583
11584 ent2 = ppc64_tlsld_got (ibfd2);
11585 if (!ent2->is_indirect
11586 && ent2->got.offset != (bfd_vma) -1
11587 && elf_gp (ibfd2) == elf_gp (ibfd))
11588 {
11589 ent2->is_indirect = TRUE;
11590 ent2->got.ent = ent;
11591 }
11592 }
11593 }
11594 }
11595
11596 /* Zap sizes of got sections. */
33e44f2e
AM		 11597 htab->elf.irelplt->rawsize = htab->elf.irelplt->size;
11598 htab->elf.irelplt->size -= htab->got_reli_size;
927be08e
AM		 11599 htab->got_reli_size = 0;
11600
c72f2fb2 11601 for (ibfd = info->input_bfds; ibfd != NULL; ibfd = ibfd->link.next)
927be08e
AM		 11602 {
11603 asection *got, *relgot;
11604
11605 if (!is_ppc64_elf (ibfd))
11606 continue;
11607
11608 got = ppc64_elf_tdata (ibfd)->got;
11609 if (got != NULL)
11610 {
11611 got->rawsize = got->size;
11612 got->size = 0;
11613 relgot = ppc64_elf_tdata (ibfd)->relgot;
11614 relgot->rawsize = relgot->size;
11615 relgot->size = 0;
11616 }
11617 }
11618
11619 /* Now reallocate the got, local syms first. We don't need to
11620 allocate section contents again since we never increase size. */
c72f2fb2 11621 for (ibfd = info->input_bfds; ibfd != NULL; ibfd = ibfd->link.next)
927be08e
AM		 11622 {
11623 struct got_entry **lgot_ents;
11624 struct got_entry **end_lgot_ents;
11625 struct plt_entry **local_plt;
11626 struct plt_entry **end_local_plt;
f961d9dd 11627 unsigned char *lgot_masks;
927be08e
AM		 11628 bfd_size_type locsymcount;
11629 Elf_Internal_Shdr *symtab_hdr;
19e08130 11630 asection *s;
927be08e
AM		 11631
11632 if (!is_ppc64_elf (ibfd))
11633 continue;
11634
11635 lgot_ents = elf_local_got_ents (ibfd);
11636 if (!lgot_ents)
11637 continue;
11638
11639 symtab_hdr = &elf_symtab_hdr (ibfd);
11640 locsymcount = symtab_hdr->sh_info;
11641 end_lgot_ents = lgot_ents + locsymcount;
11642 local_plt = (struct plt_entry **) end_lgot_ents;
11643 end_local_plt = local_plt + locsymcount;
f961d9dd 11644 lgot_masks = (unsigned char *) end_local_plt;
927be08e 11645 s = ppc64_elf_tdata (ibfd)->got;
927be08e
AM		 11646 for (; lgot_ents < end_lgot_ents; ++lgot_ents, ++lgot_masks)
11647 {
11648 struct got_entry *ent;
11649
11650 for (ent = *lgot_ents; ent != NULL; ent = ent->next)
d0fae19d 11651 {
19e08130
AM		 11652 unsigned int ent_size = 8;
11653 unsigned int rel_size = sizeof (Elf64_External_Rela);
11654
d0fae19d
AM		 11655 ent->got.offset = s->size;
11656 if ((ent->tls_type & *lgot_masks & TLS_GD) != 0)
d0fae19d 11657 {
19e08130
AM		 11658 ent_size *= 2;
11659 rel_size *= 2;
11660 }
11661 s->size += ent_size;
11662 if ((*lgot_masks & PLT_IFUNC) != 0)
11663 {
33e44f2e 11664 htab->elf.irelplt->size += rel_size;
19e08130
AM		 11665 htab->got_reli_size += rel_size;
11666 }
0e1862bb 11667 else if (bfd_link_pic (info))
19e08130
AM		 11668 {
11669 asection *srel = ppc64_elf_tdata (ibfd)->relgot;
11670 srel->size += rel_size;
d0fae19d
AM		 11671 }
11672 }
927be08e
AM		 11673 }
11674 }
11675
11676 elf_link_hash_traverse (&htab->elf, reallocate_got, info);
11677
c72f2fb2 11678 for (ibfd = info->input_bfds; ibfd != NULL; ibfd = ibfd->link.next)
927be08e
AM		 11679 {
11680 struct got_entry *ent;
11681
11682 if (!is_ppc64_elf (ibfd))
11683 continue;
11684
11685 ent = ppc64_tlsld_got (ibfd);
11686 if (!ent->is_indirect
11687 && ent->got.offset != (bfd_vma) -1)
11688 {
11689 asection *s = ppc64_elf_tdata (ibfd)->got;
11690 ent->got.offset = s->size;
11691 s->size += 16;
0e1862bb 11692 if (bfd_link_pic (info))
927be08e
AM		 11693 {
11694 asection *srel = ppc64_elf_tdata (ibfd)->relgot;
11695 srel->size += sizeof (Elf64_External_Rela);
11696 }
11697 }
11698 }
11699
33e44f2e 11700 done_something = htab->elf.irelplt->rawsize != htab->elf.irelplt->size;
927be08e 11701 if (!done_something)
c72f2fb2 11702 for (ibfd = info->input_bfds; ibfd != NULL; ibfd = ibfd->link.next)
927be08e
AM		 11703 {
11704 asection *got;
11705
11706 if (!is_ppc64_elf (ibfd))
11707 continue;
11708
11709 got = ppc64_elf_tdata (ibfd)->got;
11710 if (got != NULL)
11711 {
11712 done_something = got->rawsize != got->size;
11713 if (done_something)
11714 break;
11715 }
11716 }
11717
11718 if (done_something)
e7d1c40c 11719 (*htab->params->layout_sections_again) ();
927be08e
AM		 11720
11721 /* Set up for second pass over toc sections to recalculate elf_gp
11722 on input sections. */
11723 htab->toc_bfd = NULL;
11724 htab->toc_first_sec = NULL;
11725 htab->second_toc_pass = TRUE;
11726 return done_something;
11727}
11728
11729/* Called after second pass of multitoc partitioning. */
11730
11731void
11732ppc64_elf_finish_multitoc_partition (struct bfd_link_info *info)
11733{
11734 struct ppc_link_hash_table *htab = ppc_hash_table (info);
11735
11736 /* After the second pass, toc_curr tracks the TOC offset used
11737 for code sections below in ppc64_elf_next_input_section. */
3d6f9012 11738 htab->toc_curr = TOC_BASE_OFF;
ad8e1ba5
AM		 11739}
11740
9b5ecbd0
AM		 11741/* No toc references were found in ISEC. If the code in ISEC makes no
11742 calls, then there's no need to use toc adjusting stubs when branching
11743 into ISEC. Actually, indirect calls from ISEC are OK as they will
4c52953f
AM		 11744 load r2. Returns -1 on error, 0 for no stub needed, 1 for stub
11745 needed, and 2 if a cyclical call-graph was found but no other reason
11746 for a stub was detected. If called from the top level, a return of
11747 2 means the same as a return of 0. */
9b5ecbd0
AM		 11748
11749static int
4ce794b7 11750toc_adjusting_stub_needed (struct bfd_link_info *info, asection *isec)
9b5ecbd0 11751{
9b5ecbd0 11752 int ret;
70cc837d
AM		 11753
11754 /* Mark this section as checked. */
11755 isec->call_check_done = 1;
9b5ecbd0 11756
772119ce
AM		 11757 /* We know none of our code bearing sections will need toc stubs. */
11758 if ((isec->flags & SEC_LINKER_CREATED) != 0)
11759 return 0;
11760
eea6121a 11761 if (isec->size == 0)
082c50f8
AM		 11762 return 0;
11763
4c52953f
AM		 11764 if (isec->output_section == NULL)
11765 return 0;
11766
4c52953f 11767 ret = 0;
70cc837d 11768 if (isec->reloc_count != 0)
9b5ecbd0 11769 {
70cc837d
AM		 11770 Elf_Internal_Rela *relstart, *rel;
11771 Elf_Internal_Sym *local_syms;
11772 struct ppc_link_hash_table *htab;
2917689a 11773
70cc837d
AM		 11774 relstart = _bfd_elf_link_read_relocs (isec->owner, isec, NULL, NULL,
11775 info->keep_memory);
11776 if (relstart == NULL)
11777 return -1;
90aecf7a 11778
70cc837d
AM		 11779 /* Look for branches to outside of this section. */
11780 local_syms = NULL;
11781 htab = ppc_hash_table (info);
11782 if (htab == NULL)
11783 return -1;
4c52953f 11784
70cc837d 11785 for (rel = relstart; rel < relstart + isec->reloc_count; ++rel)
4c52953f 11786 {
70cc837d
AM		 11787 enum elf_ppc64_reloc_type r_type;
11788 unsigned long r_symndx;
11789 struct elf_link_hash_entry *h;
11790 struct ppc_link_hash_entry *eh;
11791 Elf_Internal_Sym *sym;
11792 asection *sym_sec;
11793 struct _opd_sec_data *opd;
11794 bfd_vma sym_value;
11795 bfd_vma dest;
11796
11797 r_type = ELF64_R_TYPE (rel->r_info);
11798 if (r_type != R_PPC64_REL24
11799 && r_type != R_PPC64_REL14
11800 && r_type != R_PPC64_REL14_BRTAKEN
11801 && r_type != R_PPC64_REL14_BRNTAKEN)
11802 continue;
4c52953f 11803
70cc837d
AM		 11804 r_symndx = ELF64_R_SYM (rel->r_info);
11805 if (!get_sym_h (&h, &sym, &sym_sec, NULL, &local_syms, r_symndx,
11806 isec->owner))
4c52953f 11807 {
70cc837d
AM		 11808 ret = -1;
11809 break;
11810 }
4c52953f 11811
70cc837d
AM		 11812 /* Calls to dynamic lib functions go through a plt call stub
11813 that uses r2. */
11814 eh = (struct ppc_link_hash_entry *) h;
11815 if (eh != NULL
11816 && (eh->elf.plt.plist != NULL
11817 || (eh->oh != NULL
11818 && ppc_follow_link (eh->oh)->elf.plt.plist != NULL)))
11819 {
11820 ret = 1;
11821 break;
4c52953f
AM		 11822 }
11823
70cc837d
AM		 11824 if (sym_sec == NULL)
11825 /* Ignore other undefined symbols. */
4c52953f 11826 continue;
4c52953f 11827
70cc837d
AM		 11828 /* Assume branches to other sections not included in the
11829 link need stubs too, to cover -R and absolute syms. */
11830 if (sym_sec->output_section == NULL)
11831 {
11832 ret = 1;
11833 break;
11834 }
4c52953f 11835
70cc837d
AM		 11836 if (h == NULL)
11837 sym_value = sym->st_value;
11838 else
11839 {
11840 if (h->root.type != bfd_link_hash_defined
11841 && h->root.type != bfd_link_hash_defweak)
11842 abort ();
11843 sym_value = h->root.u.def.value;
11844 }
11845 sym_value += rel->r_addend;
4c52953f 11846
70cc837d
AM		 11847 /* If this branch reloc uses an opd sym, find the code section. */
11848 opd = get_opd_info (sym_sec);
11849 if (opd != NULL)
11850 {
11851 if (h == NULL && opd->adjust != NULL)
11852 {
11853 long adjust;
4c52953f 11854
92a9c616 11855 adjust = opd->adjust[OPD_NDX (sym_value)];
70cc837d
AM		 11856 if (adjust == -1)
11857 /* Assume deleted functions won't ever be called. */
11858 continue;
11859 sym_value += adjust;
11860 }
4c52953f 11861
aef36ac1
AM		 11862 dest = opd_entry_value (sym_sec, sym_value,
11863 &sym_sec, NULL, FALSE);
70cc837d
AM		 11864 if (dest == (bfd_vma) -1)
11865 continue;
11866 }
11867 else
11868 dest = (sym_value
11869 + sym_sec->output_offset
11870 + sym_sec->output_section->vma);
4c52953f 11871
70cc837d
AM		 11872 /* Ignore branch to self. */
11873 if (sym_sec == isec)
11874 continue;
4c52953f 11875
70cc837d
AM		 11876 /* If the called function uses the toc, we need a stub. */
11877 if (sym_sec->has_toc_reloc
11878 || sym_sec->makes_toc_func_call)
4c52953f 11879 {
70cc837d 11880 ret = 1;
4c52953f
AM		 11881 break;
11882 }
70cc837d
AM		 11883
11884 /* Assume any branch that needs a long branch stub might in fact
11885 need a plt_branch stub. A plt_branch stub uses r2. */
11886 else if (dest - (isec->output_offset
11887 + isec->output_section->vma
6911b7dc
AM		 11888 + rel->r_offset) + (1 << 25)
11889 >= (2u << 25) - PPC64_LOCAL_ENTRY_OFFSET (h
11890 ? h->other
11891 : sym->st_other))
4c52953f 11892 {
70cc837d
AM		 11893 ret = 1;
11894 break;
11895 }
11896
11897 /* If calling back to a section in the process of being
11898 tested, we can't say for sure that no toc adjusting stubs
11899 are needed, so don't return zero. */
11900 else if (sym_sec->call_check_in_progress)
11901 ret = 2;
11902
11903 /* Branches to another section that itself doesn't have any TOC
11904 references are OK. Recursively call ourselves to check. */
11905 else if (!sym_sec->call_check_done)
11906 {
11907 int recur;
11908
11909 /* Mark current section as indeterminate, so that other
11910 sections that call back to current won't be marked as
11911 known. */
11912 isec->call_check_in_progress = 1;
11913 recur = toc_adjusting_stub_needed (info, sym_sec);
11914 isec->call_check_in_progress = 0;
11915
4c52953f
AM		 11916 if (recur != 0)
11917 {
70cc837d
AM		 11918 ret = recur;
11919 if (recur != 2)
11920 break;
4c52953f
AM		 11921 }
11922 }
4c52953f 11923 }
70cc837d
AM		 11924
11925 if (local_syms != NULL
11926 && (elf_symtab_hdr (isec->owner).contents
11927 != (unsigned char *) local_syms))
11928 free (local_syms);
11929 if (elf_section_data (isec)->relocs != relstart)
11930 free (relstart);
9b5ecbd0
AM		 11931 }
11932
70cc837d
AM		 11933 if ((ret & 1) == 0
11934 && isec->map_head.s != NULL
11935 && (strcmp (isec->output_section->name, ".init") == 0
11936 || strcmp (isec->output_section->name, ".fini") == 0))
11937 {
11938 if (isec->map_head.s->has_toc_reloc
11939 || isec->map_head.s->makes_toc_func_call)
11940 ret = 1;
11941 else if (!isec->map_head.s->call_check_done)
11942 {
11943 int recur;
11944 isec->call_check_in_progress = 1;
11945 recur = toc_adjusting_stub_needed (info, isec->map_head.s);
11946 isec->call_check_in_progress = 0;
11947 if (recur != 0)
11948 ret = recur;
11949 }
11950 }
11951
11952 if (ret == 1)
11953 isec->makes_toc_func_call = 1;
4c52953f 11954
9b5ecbd0
AM		 11955 return ret;
11956}
11957
721956f4
AM		 11958/* The linker repeatedly calls this function for each input section,
11959 in the order that input sections are linked into output sections.
11960 Build lists of input sections to determine groupings between which
11961 we may insert linker stubs. */
11962
9b5ecbd0 11963bfd_boolean
4ce794b7 11964ppc64_elf_next_input_section (struct bfd_link_info *info, asection *isec)
721956f4
AM		 11965{
11966 struct ppc_link_hash_table *htab = ppc_hash_table (info);
11967
4dfe6ac6
NC		 11968 if (htab == NULL)
11969 return FALSE;
11970
734b6cf9 11971 if ((isec->output_section->flags & SEC_CODE) != 0
6f20ed8a 11972 && isec->output_section->id < htab->sec_info_arr_size)
721956f4 11973 {
3d6f9012
AM		 11974 /* This happens to make the list in reverse order,
11975 which is what we want. */
6f20ed8a
AM		 11976 htab->sec_info[isec->id].u.list
11977 = htab->sec_info[isec->output_section->id].u.list;
11978 htab->sec_info[isec->output_section->id].u.list = isec;
721956f4 11979 }
ad8e1ba5 11980
4c52953f 11981 if (htab->multi_toc_needed)
9b5ecbd0 11982 {
8b974ba3
AM		 11983 /* Analyse sections that aren't already flagged as needing a
11984 valid toc pointer. Exclude .fixup for the linux kernel.
11985 .fixup contains branches, but only back to the function that
11986 hit an exception. */
11987 if (!(isec->has_toc_reloc
11988 || (isec->flags & SEC_CODE) == 0
11989 || strcmp (isec->name, ".fixup") == 0
11990 || isec->call_check_done))
11991 {
11992 if (toc_adjusting_stub_needed (info, isec) < 0)
6683a28d 11993 return FALSE;
8b974ba3
AM		 11994 }
11995 /* Make all sections use the TOC assigned for this object file.
11996 This will be wrong for pasted sections; We fix that in
11997 check_pasted_section(). */
11998 if (elf_gp (isec->owner) != 0)
11999 htab->toc_curr = elf_gp (isec->owner);
12000 }
12001
6f20ed8a 12002 htab->sec_info[isec->id].toc_off = htab->toc_curr;
9b5ecbd0 12003 return TRUE;
721956f4
AM		 12004}
12005
70cc837d
AM		 12006/* Check that all .init and .fini sections use the same toc, if they
12007 have toc relocs. */
12008
12009static bfd_boolean
12010check_pasted_section (struct bfd_link_info *info, const char *name)
12011{
12012 asection *o = bfd_get_section_by_name (info->output_bfd, name);
12013
12014 if (o != NULL)
12015 {
12016 struct ppc_link_hash_table *htab = ppc_hash_table (info);
12017 bfd_vma toc_off = 0;
12018 asection *i;
12019
12020 for (i = o->map_head.s; i != NULL; i = i->map_head.s)
12021 if (i->has_toc_reloc)
12022 {
12023 if (toc_off == 0)
6f20ed8a
AM		 12024 toc_off = htab->sec_info[i->id].toc_off;
12025 else if (toc_off != htab->sec_info[i->id].toc_off)
70cc837d
AM		 12026 return FALSE;
12027 }
6683a28d
AM		 12028
12029 if (toc_off == 0)
12030 for (i = o->map_head.s; i != NULL; i = i->map_head.s)
12031 if (i->makes_toc_func_call)
12032 {
6f20ed8a 12033 toc_off = htab->sec_info[i->id].toc_off;
6683a28d
AM		 12034 break;
12035 }
12036
70cc837d
AM		 12037 /* Make sure the whole pasted function uses the same toc offset. */
12038 if (toc_off != 0)
12039 for (i = o->map_head.s; i != NULL; i = i->map_head.s)
6f20ed8a 12040 htab->sec_info[i->id].toc_off = toc_off;
70cc837d
AM		 12041 }
12042 return TRUE;
12043}
12044
12045bfd_boolean
12046ppc64_elf_check_init_fini (struct bfd_link_info *info)
12047{
12048 return (check_pasted_section (info, ".init")
12049 & check_pasted_section (info, ".fini"));
12050}
12051
721956f4
AM		 12052/* See whether we can group stub sections together. Grouping stub
12053 sections may result in fewer stubs. More importantly, we need to
12054 put all .init* and .fini* stubs at the beginning of the .init or
12055 .fini output sections respectively, because glibc splits the
12056 _init and _fini functions into multiple parts. Putting a stub in
12057 the middle of a function is not a good idea. */
12058
6f20ed8a
AM		 12059static bfd_boolean
12060group_sections (struct bfd_link_info *info,
4ce794b7
AM		 12061 bfd_size_type stub_group_size,
12062 bfd_boolean stubs_always_before_branch)
721956f4 12063{
6f20ed8a
AM		 12064 struct ppc_link_hash_table *htab;
12065 asection *osec;
7c8fe5c4
AM		 12066 bfd_boolean suppress_size_errors;
12067
6f20ed8a
AM		 12068 htab = ppc_hash_table (info);
12069 if (htab == NULL)
12070 return FALSE;
12071
7c8fe5c4 12072 suppress_size_errors = FALSE;
7c8fe5c4
AM		 12073 if (stub_group_size == 1)
12074 {
12075 /* Default values. */
12076 if (stubs_always_before_branch)
09f92717 12077 stub_group_size = 0x1e00000;
7c8fe5c4 12078 else
09f92717 12079 stub_group_size = 0x1c00000;
7c8fe5c4
AM		 12080 suppress_size_errors = TRUE;
12081 }
12082
6f20ed8a 12083 for (osec = info->output_bfd->sections; osec != NULL; osec = osec->next)
721956f4 12084 {
6f20ed8a
AM		 12085 asection *tail;
12086
12087 if (osec->id >= htab->sec_info_arr_size)
12088 continue;
12089
12090 tail = htab->sec_info[osec->id].u.list;
734b6cf9 12091 while (tail != NULL)
721956f4 12092 {
734b6cf9
AM		 12093 asection *curr;
12094 asection *prev;
12095 bfd_size_type total;
12096 bfd_boolean big_sec;
12097 bfd_vma curr_toc;
6f20ed8a 12098 struct map_stub *group;
09f92717 12099 bfd_size_type group_size;
734b6cf9
AM		 12100
12101 curr = tail;
eea6121a 12102 total = tail->size;
09f92717
AM		 12103 group_size = (ppc64_elf_section_data (tail) != NULL
12104 && ppc64_elf_section_data (tail)->has_14bit_branch
12105 ? stub_group_size >> 10 : stub_group_size);
12106
12107 big_sec = total > group_size;
7c8fe5c4 12108 if (big_sec && !suppress_size_errors)
4eca0228
AM		 12109 _bfd_error_handler (_("%B section %A exceeds stub group size"),
12110 tail->owner, tail);
6f20ed8a 12111 curr_toc = htab->sec_info[tail->id].toc_off;
734b6cf9 12112
6f20ed8a 12113 while ((prev = htab->sec_info[curr->id].u.list) != NULL
734b6cf9 12114 && ((total += curr->output_offset - prev->output_offset)
6bee8834
AM		 12115 < (ppc64_elf_section_data (prev) != NULL
12116 && ppc64_elf_section_data (prev)->has_14bit_branch
09f92717 12117 ? (group_size = stub_group_size >> 10) : group_size))
6f20ed8a 12118 && htab->sec_info[prev->id].toc_off == curr_toc)
734b6cf9
AM		 12119 curr = prev;
12120
12121 /* OK, the size from the start of CURR to the end is less
09f92717 12122 than group_size and thus can be handled by one stub
734b6cf9 12123 section. (or the tail section is itself larger than
09f92717
AM		 12124 group_size, in which case we may be toast.) We should
12125 really be keeping track of the total size of stubs added
12126 here, as stubs contribute to the final output section
12127 size. That's a little tricky, and this way will only
12128 break if stubs added make the total size more than 2^25,
12129 ie. for the default stub_group_size, if stubs total more
12130 than 2097152 bytes, or nearly 75000 plt call stubs. */
6f20ed8a
AM		 12131 group = bfd_alloc (curr->owner, sizeof (*group));
12132 if (group == NULL)
12133 return FALSE;
12134 group->link_sec = curr;
12135 group->stub_sec = NULL;
a4b6fadd
AM		 12136 group->needs_save_res = 0;
12137 group->next = htab->group;
12138 htab->group = group;
734b6cf9 12139 do
721956f4 12140 {
6f20ed8a 12141 prev = htab->sec_info[tail->id].u.list;
734b6cf9 12142 /* Set up this stub group. */
6f20ed8a 12143 htab->sec_info[tail->id].u.group = group;
721956f4 12144 }
734b6cf9
AM		 12145 while (tail != curr && (tail = prev) != NULL);
12146
09f92717 12147 /* But wait, there's more! Input sections up to group_size
734b6cf9
AM		 12148 bytes before the stub section can be handled by it too.
12149 Don't do this if we have a really large section after the
12150 stubs, as adding more stubs increases the chance that
12151 branches may not reach into the stub section. */
12152 if (!stubs_always_before_branch && !big_sec)
12153 {
12154 total = 0;
12155 while (prev != NULL
12156 && ((total += tail->output_offset - prev->output_offset)
6bee8834
AM		 12157 < (ppc64_elf_section_data (prev) != NULL
12158 && ppc64_elf_section_data (prev)->has_14bit_branch
09f92717 12159 ? (group_size = stub_group_size >> 10) : group_size))
6f20ed8a 12160 && htab->sec_info[prev->id].toc_off == curr_toc)
734b6cf9
AM		 12161 {
12162 tail = prev;
6f20ed8a
AM		 12163 prev = htab->sec_info[tail->id].u.list;
12164 htab->sec_info[tail->id].u.group = group;
734b6cf9
AM		 12165 }
12166 }
12167 tail = prev;
721956f4
AM		 12168 }
12169 }
6f20ed8a 12170 return TRUE;
721956f4
AM		 12171}
12172
58d180e8
AM		 12173static const unsigned char glink_eh_frame_cie[] =
12174{
12175 0, 0, 0, 16, /* length. */
12176 0, 0, 0, 0, /* id. */
12177 1, /* CIE version. */
12178 'z', 'R', 0, /* Augmentation string. */
12179 4, /* Code alignment. */
12180 0x78, /* Data alignment. */
12181 65, /* RA reg. */
12182 1, /* Augmentation size. */
12183 DW_EH_PE_pcrel | DW_EH_PE_sdata4, /* FDE encoding. */
da44f4e5
AM		 12184 DW_CFA_def_cfa, 1, 0, /* def_cfa: r1 offset 0. */
12185 0, 0, 0, 0
58d180e8
AM		 12186};
12187
d969d15f
AM		 12188/* Stripping output sections is normally done before dynamic section
12189 symbols have been allocated. This function is called later, and
12190 handles cases like htab->brlt which is mapped to its own output
12191 section. */
12192
12193static void
12194maybe_strip_output (struct bfd_link_info *info, asection *isec)
12195{
12196 if (isec->size == 0
12197 && isec->output_section->size == 0
53d8967a 12198 && !(isec->output_section->flags & SEC_KEEP)
d969d15f
AM		 12199 && !bfd_section_removed_from_list (info->output_bfd,
12200 isec->output_section)
12201 && elf_section_data (isec->output_section)->dynindx == 0)
12202 {
12203 isec->output_section->flags |= SEC_EXCLUDE;
12204 bfd_section_list_remove (info->output_bfd, isec->output_section);
12205 info->output_bfd->section_count--;
12206 }
12207}
12208
721956f4
AM		 12209/* Determine and set the size of the stub section for a final link.
12210
12211 The basic idea here is to examine all the relocations looking for
12212 PC-relative calls to a target that is unreachable with a "bl"
12213 instruction. */
12214
b34976b6 12215bfd_boolean
e7d1c40c 12216ppc64_elf_size_stubs (struct bfd_link_info *info)
721956f4
AM		 12217{
12218 bfd_size_type stub_group_size;
b34976b6 12219 bfd_boolean stubs_always_before_branch;
721956f4
AM		 12220 struct ppc_link_hash_table *htab = ppc_hash_table (info);
12221
4dfe6ac6
NC		 12222 if (htab == NULL)
12223 return FALSE;
12224
0e1862bb 12225 if (htab->params->plt_thread_safe == -1 && !bfd_link_executable (info))
e7d1c40c 12226 htab->params->plt_thread_safe = 1;
b9e5796b 12227 if (!htab->opd_abi)
e7d1c40c
AM		 12228 htab->params->plt_thread_safe = 0;
12229 else if (htab->params->plt_thread_safe == -1)
794e51c0 12230 {
e2458743 12231 static const char *const thread_starter[] =
794e51c0
AM		 12232 {
12233 "pthread_create",
12234 /* libstdc++ */
12235 "_ZNSt6thread15_M_start_threadESt10shared_ptrINS_10_Impl_baseEE",
12236 /* librt */
12237 "aio_init", "aio_read", "aio_write", "aio_fsync", "lio_listio",
12238 "mq_notify", "create_timer",
12239 /* libanl */
12240 "getaddrinfo_a",
12241 /* libgomp */
2300b5a1 12242 "GOMP_parallel",
794e51c0 12243 "GOMP_parallel_start",
2300b5a1 12244 "GOMP_parallel_loop_static",
794e51c0 12245 "GOMP_parallel_loop_static_start",
2300b5a1 12246 "GOMP_parallel_loop_dynamic",
794e51c0 12247 "GOMP_parallel_loop_dynamic_start",
2300b5a1 12248 "GOMP_parallel_loop_guided",
794e51c0 12249 "GOMP_parallel_loop_guided_start",
2300b5a1 12250 "GOMP_parallel_loop_runtime",
794e51c0 12251 "GOMP_parallel_loop_runtime_start",
2300b5a1 12252 "GOMP_parallel_sections",
68ffbac6 12253 "GOMP_parallel_sections_start",
f9dffbf0
AM		 12254 /* libgo */
12255 "__go_go",
794e51c0
AM		 12256 };
12257 unsigned i;
12258
a4b6fadd 12259 for (i = 0; i < ARRAY_SIZE (thread_starter); i++)
794e51c0
AM		 12260 {
12261 struct elf_link_hash_entry *h;
12262 h = elf_link_hash_lookup (&htab->elf, thread_starter[i],
12263 FALSE, FALSE, TRUE);
e7d1c40c
AM		 12264 htab->params->plt_thread_safe = h != NULL && h->ref_regular;
12265 if (htab->params->plt_thread_safe)
794e51c0
AM		 12266 break;
12267 }
12268 }
e7d1c40c
AM		 12269 stubs_always_before_branch = htab->params->group_size < 0;
12270 if (htab->params->group_size < 0)
12271 stub_group_size = -htab->params->group_size;
721956f4 12272 else
e7d1c40c 12273 stub_group_size = htab->params->group_size;
721956f4 12274
6f20ed8a
AM		 12275 if (!group_sections (info, stub_group_size, stubs_always_before_branch))
12276 return FALSE;
721956f4 12277
c9301e31
AM		 12278#define STUB_SHRINK_ITER 20
12279 /* Loop until no stubs added. After iteration 20 of this loop we may
12280 exit on a stub section shrinking. This is to break out of a
12281 pathological case where adding stubs on one iteration decreases
12282 section gaps (perhaps due to alignment), which then requires
12283 fewer or smaller stubs on the next iteration. */
12284
721956f4
AM		 12285 while (1)
12286 {
12287 bfd *input_bfd;
12288 unsigned int bfd_indx;
a4b6fadd 12289 struct map_stub *group;
721956f4 12290 asection *stub_sec;
721956f4
AM		 12291
12292 htab->stub_iteration += 1;
721956f4
AM		 12293
12294 for (input_bfd = info->input_bfds, bfd_indx = 0;
12295 input_bfd != NULL;
c72f2fb2 12296 input_bfd = input_bfd->link.next, bfd_indx++)
721956f4
AM		 12297 {
12298 Elf_Internal_Shdr *symtab_hdr;
12299 asection *section;
6cdc0ccc 12300 Elf_Internal_Sym *local_syms = NULL;
721956f4 12301
0c8d6e5c 12302 if (!is_ppc64_elf (input_bfd))
67f93c31
AM		 12303 continue;
12304
721956f4 12305 /* We'll need the symbol table in a second. */
0ffa91dd 12306 symtab_hdr = &elf_symtab_hdr (input_bfd);
721956f4
AM		 12307 if (symtab_hdr->sh_info == 0)
12308 continue;
12309
721956f4
AM		 12310 /* Walk over each section attached to the input bfd. */
12311 for (section = input_bfd->sections;
12312 section != NULL;
12313 section = section->next)
12314 {
721956f4 12315 Elf_Internal_Rela *internal_relocs, *irelaend, *irela;
721956f4
AM		 12316
12317 /* If there aren't any relocs, then there's nothing more
12318 to do. */
12319 if ((section->flags & SEC_RELOC) == 0
12c0f757
AM		 12320 || (section->flags & SEC_ALLOC) == 0
12321 || (section->flags & SEC_LOAD) == 0
12322 || (section->flags & SEC_CODE) == 0
721956f4
AM		 12323 || section->reloc_count == 0)
12324 continue;
12325
12326 /* If this section is a link-once section that will be
12327 discarded, then don't create any stubs. */
12328 if (section->output_section == NULL
927be08e 12329 || section->output_section->owner != info->output_bfd)
721956f4
AM		 12330 continue;
12331
1e2f5b6e
AM		 12332 /* Get the relocs. */
12333 internal_relocs
4ce794b7 12334 = _bfd_elf_link_read_relocs (input_bfd, section, NULL, NULL,
45d6a902 12335 info->keep_memory);
721956f4 12336 if (internal_relocs == NULL)
1e2f5b6e 12337 goto error_ret_free_local;
721956f4
AM		 12338
12339 /* Now examine each relocation. */
12340 irela = internal_relocs;
12341 irelaend = irela + section->reloc_count;
12342 for (; irela < irelaend; irela++)
12343 {
4ce794b7
AM		 12344 enum elf_ppc64_reloc_type r_type;
12345 unsigned int r_indx;
721956f4
AM		 12346 enum ppc_stub_type stub_type;
12347 struct ppc_stub_hash_entry *stub_entry;
8387904d 12348 asection *sym_sec, *code_sec;
e054468f 12349 bfd_vma sym_value, code_value;
721956f4 12350 bfd_vma destination;
6911b7dc 12351 unsigned long local_off;
8843416a 12352 bfd_boolean ok_dest;
721956f4 12353 struct ppc_link_hash_entry *hash;
8387904d 12354 struct ppc_link_hash_entry *fdh;
411e1bfb
AM		 12355 struct elf_link_hash_entry *h;
12356 Elf_Internal_Sym *sym;
721956f4
AM		 12357 char *stub_name;
12358 const asection *id_sec;
74f0fb50 12359 struct _opd_sec_data *opd;
e054468f 12360 struct plt_entry *plt_ent;
721956f4
AM		 12361
12362 r_type = ELF64_R_TYPE (irela->r_info);
12363 r_indx = ELF64_R_SYM (irela->r_info);
12364
4ce794b7 12365 if (r_type >= R_PPC64_max)
721956f4
AM		 12366 {
12367 bfd_set_error (bfd_error_bad_value);
6cdc0ccc 12368 goto error_ret_free_internal;
721956f4
AM		 12369 }
12370
12371 /* Only look for stubs on branch instructions. */
4ce794b7
AM		 12372 if (r_type != R_PPC64_REL24
12373 && r_type != R_PPC64_REL14
12374 && r_type != R_PPC64_REL14_BRTAKEN
12375 && r_type != R_PPC64_REL14_BRNTAKEN)
721956f4
AM		 12376 continue;
12377
12378 /* Now determine the call target, its name, value,
12379 section. */
411e1bfb
AM		 12380 if (!get_sym_h (&h, &sym, &sym_sec, NULL, &local_syms,
12381 r_indx, input_bfd))
12382 goto error_ret_free_internal;
12383 hash = (struct ppc_link_hash_entry *) h;
12384
8843416a 12385 ok_dest = FALSE;
8387904d 12386 fdh = NULL;
7fe2b9a6 12387 sym_value = 0;
411e1bfb 12388 if (hash == NULL)
721956f4 12389 {
411e1bfb 12390 sym_value = sym->st_value;
c27b8c2a
AM		 12391 if (sym_sec != NULL
12392 && sym_sec->output_section != NULL)
12393 ok_dest = TRUE;
721956f4 12394 }
7fe2b9a6
AM		 12395 else if (hash->elf.root.type == bfd_link_hash_defined
12396 || hash->elf.root.type == bfd_link_hash_defweak)
12397 {
12398 sym_value = hash->elf.root.u.def.value;
12399 if (sym_sec->output_section != NULL)
12400 ok_dest = TRUE;
12401 }
12402 else if (hash->elf.root.type == bfd_link_hash_undefweak
12403 || hash->elf.root.type == bfd_link_hash_undefined)
721956f4 12404 {
99877b66 12405 /* Recognise an old ABI func code entry sym, and
7fe2b9a6
AM		 12406 use the func descriptor sym instead if it is
12407 defined. */
ceb1f1ef 12408 if (hash->elf.root.root.string[0] == '.'
b31867b6 12409 && (fdh = lookup_fdh (hash, htab)) != NULL)
8387904d 12410 {
8387904d
AM		 12411 if (fdh->elf.root.type == bfd_link_hash_defined
12412 || fdh->elf.root.type == bfd_link_hash_defweak)
12413 {
12414 sym_sec = fdh->elf.root.u.def.section;
12415 sym_value = fdh->elf.root.u.def.value;
12416 if (sym_sec->output_section != NULL)
12417 ok_dest = TRUE;
12418 }
99877b66
AM		 12419 else
12420 fdh = NULL;
8387904d 12421 }
7fe2b9a6
AM		 12422 }
12423 else
12424 {
12425 bfd_set_error (bfd_error_bad_value);
12426 goto error_ret_free_internal;
721956f4
AM		 12427 }
12428
8843416a 12429 destination = 0;
6911b7dc 12430 local_off = 0;
8843416a
AM		 12431 if (ok_dest)
12432 {
12433 sym_value += irela->r_addend;
12434 destination = (sym_value
12435 + sym_sec->output_offset
12436 + sym_sec->output_section->vma);
6911b7dc
AM		 12437 local_off = PPC64_LOCAL_ENTRY_OFFSET (hash
12438 ? hash->elf.other
12439 : sym->st_other);
8843416a
AM		 12440 }
12441
8387904d 12442 code_sec = sym_sec;
e054468f 12443 code_value = sym_value;
74f0fb50
AM		 12444 opd = get_opd_info (sym_sec);
12445 if (opd != NULL)
8387904d
AM		 12446 {
12447 bfd_vma dest;
12448
74f0fb50 12449 if (hash == NULL && opd->adjust != NULL)
8387904d 12450 {
51aecdc5 12451 long adjust = opd->adjust[OPD_NDX (sym_value)];
8387904d
AM		 12452 if (adjust == -1)
12453 continue;
e054468f 12454 code_value += adjust;
8387904d
AM		 12455 sym_value += adjust;
12456 }
12457 dest = opd_entry_value (sym_sec, sym_value,
aef36ac1 12458 &code_sec, &code_value, FALSE);
8387904d
AM		 12459 if (dest != (bfd_vma) -1)
12460 {
12461 destination = dest;
12462 if (fdh != NULL)
12463 {
12464 /* Fixup old ABI sym to point at code
12465 entry. */
99877b66 12466 hash->elf.root.type = bfd_link_hash_defweak;
8387904d 12467 hash->elf.root.u.def.section = code_sec;
e054468f 12468 hash->elf.root.u.def.value = code_value;
8387904d
AM		 12469 }
12470 }
12471 }
12472
721956f4 12473 /* Determine what (if any) linker stub is needed. */
e054468f 12474 plt_ent = NULL;
721956f4 12475 stub_type = ppc_type_of_stub (section, irela, &hash,
6911b7dc
AM		 12476 &plt_ent, destination,
12477 local_off);
ad8e1ba5
AM		 12478
12479 if (stub_type != ppc_stub_plt_call)
12480 {
12481 /* Check whether we need a TOC adjusting stub.
12482 Since the linker pastes together pieces from
12483 different object files when creating the
12484 _init and _fini functions, it may be that a
12485 call to what looks like a local sym is in
12486 fact a call needing a TOC adjustment. */
8387904d
AM		 12487 if (code_sec != NULL
12488 && code_sec->output_section != NULL
6f20ed8a
AM		 12489 && (htab->sec_info[code_sec->id].toc_off
12490 != htab->sec_info[section->id].toc_off)
4c52953f
AM		 12491 && (code_sec->has_toc_reloc
12492 || code_sec->makes_toc_func_call))
ad8e1ba5
AM		 12493 stub_type = ppc_stub_long_branch_r2off;
12494 }
12495
721956f4
AM		 12496 if (stub_type == ppc_stub_none)
12497 continue;
12498
411e1bfb
AM		 12499 /* __tls_get_addr calls might be eliminated. */
12500 if (stub_type != ppc_stub_plt_call
12501 && hash != NULL
8387904d
AM		 12502 && (hash == htab->tls_get_addr
12503 || hash == htab->tls_get_addr_fd)
411e1bfb
AM		 12504 && section->has_tls_reloc
12505 && irela != internal_relocs)
12506 {
12507 /* Get tls info. */
f961d9dd 12508 unsigned char *tls_mask;
411e1bfb 12509
3a71aa26 12510 if (!get_tls_mask (&tls_mask, NULL, NULL, &local_syms,
411e1bfb
AM		 12511 irela - 1, input_bfd))
12512 goto error_ret_free_internal;
e7b938ca 12513 if (*tls_mask != 0)
411e1bfb
AM		 12514 continue;
12515 }
12516
3b421ab3
AM		 12517 if (stub_type == ppc_stub_plt_call
12518 && irela + 1 < irelaend
12519 && irela[1].r_offset == irela->r_offset + 4
794e51c0
AM		 12520 && ELF64_R_TYPE (irela[1].r_info) == R_PPC64_TOCSAVE)
12521 {
12522 if (!tocsave_find (htab, INSERT,
12523 &local_syms, irela + 1, input_bfd))
12524 goto error_ret_free_internal;
12525 }
12526 else if (stub_type == ppc_stub_plt_call)
12527 stub_type = ppc_stub_plt_call_r2save;
3b421ab3 12528
721956f4 12529 /* Support for grouping stub sections. */
6f20ed8a 12530 id_sec = htab->sec_info[section->id].u.group->link_sec;
721956f4
AM		 12531
12532 /* Get the name of this stub. */
12533 stub_name = ppc_stub_name (id_sec, sym_sec, hash, irela);
12534 if (!stub_name)
12535 goto error_ret_free_internal;
12536
12537 stub_entry = ppc_stub_hash_lookup (&htab->stub_hash_table,
b34976b6 12538 stub_name, FALSE, FALSE);
721956f4
AM		 12539 if (stub_entry != NULL)
12540 {
12541 /* The proper stub has already been created. */
12542 free (stub_name);
794e51c0
AM		 12543 if (stub_type == ppc_stub_plt_call_r2save)
12544 stub_entry->stub_type = stub_type;
721956f4
AM		 12545 continue;
12546 }
12547
25f53a85 12548 stub_entry = ppc_add_stub (stub_name, section, info);
721956f4
AM		 12549 if (stub_entry == NULL)
12550 {
12551 free (stub_name);
6cdc0ccc
AM		 12552 error_ret_free_internal:
12553 if (elf_section_data (section)->relocs == NULL)
12554 free (internal_relocs);
12555 error_ret_free_local:
12556 if (local_syms != NULL
12557 && (symtab_hdr->contents
12558 != (unsigned char *) local_syms))
12559 free (local_syms);
b34976b6 12560 return FALSE;
721956f4
AM		 12561 }
12562
ad8e1ba5 12563 stub_entry->stub_type = stub_type;
794e51c0
AM		 12564 if (stub_type != ppc_stub_plt_call
12565 && stub_type != ppc_stub_plt_call_r2save)
e054468f
AM		 12566 {
12567 stub_entry->target_value = code_value;
12568 stub_entry->target_section = code_sec;
12569 }
12570 else
12571 {
12572 stub_entry->target_value = sym_value;
12573 stub_entry->target_section = sym_sec;
12574 }
721956f4 12575 stub_entry->h = hash;
e054468f 12576 stub_entry->plt_ent = plt_ent;
6911b7dc 12577 stub_entry->other = hash ? hash->elf.other : sym->st_other;
ee75fd95
AM		 12578
12579 if (stub_entry->h != NULL)
12580 htab->stub_globals += 1;
721956f4
AM		 12581 }
12582
12583 /* We're done with the internal relocs, free them. */
6cdc0ccc 12584 if (elf_section_data (section)->relocs != internal_relocs)
1e2f5b6e 12585 free (internal_relocs);
721956f4 12586 }
6cdc0ccc
AM		 12587
12588 if (local_syms != NULL
12589 && symtab_hdr->contents != (unsigned char *) local_syms)
12590 {
12591 if (!info->keep_memory)
12592 free (local_syms);
12593 else
12594 symtab_hdr->contents = (unsigned char *) local_syms;
12595 }
721956f4
AM		 12596 }
12597
5c3dead3 12598 /* We may have added some stubs. Find out the new size of the
721956f4 12599 stub sections. */
e7d1c40c 12600 for (stub_sec = htab->params->stub_bfd->sections;
721956f4
AM		 12601 stub_sec != NULL;
12602 stub_sec = stub_sec->next)
e717da7e 12603 if ((stub_sec->flags & SEC_LINKER_CREATED) == 0)
ee75fd95 12604 {
5c3dead3 12605 stub_sec->rawsize = stub_sec->size;
ee75fd95
AM		 12606 stub_sec->size = 0;
12607 stub_sec->reloc_count = 0;
84f5d08e 12608 stub_sec->flags &= ~SEC_RELOC;
ee75fd95 12609 }
eea6121a
AM		 12610
12611 htab->brlt->size = 0;
84f5d08e
AM		 12612 htab->brlt->reloc_count = 0;
12613 htab->brlt->flags &= ~SEC_RELOC;
ee75fd95 12614 if (htab->relbrlt != NULL)
eea6121a 12615 htab->relbrlt->size = 0;
721956f4 12616
63bc6f6c 12617 bfd_hash_traverse (&htab->stub_hash_table, ppc_size_one_stub, info);
721956f4 12618
a4b6fadd
AM		 12619 for (group = htab->group; group != NULL; group = group->next)
12620 if (group->needs_save_res)
12621 group->stub_sec->size += htab->sfpr->size;
12622
176a0d42
AM		 12623 if (info->emitrelocations
12624 && htab->glink != NULL && htab->glink->size != 0)
12625 {
12626 htab->glink->reloc_count = 1;
12627 htab->glink->flags |= SEC_RELOC;
12628 }
12629
58d180e8
AM		 12630 if (htab->glink_eh_frame != NULL
12631 && !bfd_is_abs_section (htab->glink_eh_frame->output_section)
9a2a56cc 12632 && htab->glink_eh_frame->output_section->size != 0)
58d180e8 12633 {
4bbe044a 12634 size_t size = 0, align;
58d180e8 12635
e7d1c40c 12636 for (stub_sec = htab->params->stub_bfd->sections;
58d180e8
AM		 12637 stub_sec != NULL;
12638 stub_sec = stub_sec->next)
12639 if ((stub_sec->flags & SEC_LINKER_CREATED) == 0)
da44f4e5 12640 size += 24;
58d180e8
AM		 12641 if (htab->glink != NULL && htab->glink->size != 0)
12642 size += 24;
12643 if (size != 0)
12644 size += sizeof (glink_eh_frame_cie);
4bbe044a
AM		 12645 align = 1;
12646 align <<= htab->glink_eh_frame->output_section->alignment_power;
12647 align -= 1;
12648 size = (size + align) & ~align;
58d180e8
AM		 12649 htab->glink_eh_frame->rawsize = htab->glink_eh_frame->size;
12650 htab->glink_eh_frame->size = size;
12651 }
12652
e7d1c40c
AM		 12653 if (htab->params->plt_stub_align != 0)
12654 for (stub_sec = htab->params->stub_bfd->sections;
794e51c0
AM		 12655 stub_sec != NULL;
12656 stub_sec = stub_sec->next)
12657 if ((stub_sec->flags & SEC_LINKER_CREATED) == 0)
e7d1c40c
AM		 12658 stub_sec->size = ((stub_sec->size
12659 + (1 << htab->params->plt_stub_align) - 1)
29f628db 12660 & -(1 << htab->params->plt_stub_align));
794e51c0 12661
e7d1c40c 12662 for (stub_sec = htab->params->stub_bfd->sections;
5c3dead3
AM		 12663 stub_sec != NULL;
12664 stub_sec = stub_sec->next)
12665 if ((stub_sec->flags & SEC_LINKER_CREATED) == 0
c9301e31
AM		 12666 && stub_sec->rawsize != stub_sec->size
12667 && (htab->stub_iteration <= STUB_SHRINK_ITER
12668 || stub_sec->rawsize < stub_sec->size))
5c3dead3
AM		 12669 break;
12670
58d180e8
AM		 12671 if (stub_sec == NULL
12672 && (htab->glink_eh_frame == NULL
12673 || htab->glink_eh_frame->rawsize == htab->glink_eh_frame->size))
5c3dead3
AM		 12674 break;
12675
721956f4 12676 /* Ask the linker to do its stuff. */
e7d1c40c 12677 (*htab->params->layout_sections_again) ();
721956f4
AM		 12678 }
12679
da44f4e5
AM		 12680 if (htab->glink_eh_frame != NULL
12681 && htab->glink_eh_frame->size != 0)
12682 {
12683 bfd_vma val;
12684 bfd_byte *p, *last_fde;
12685 size_t last_fde_len, size, align, pad;
12686 asection *stub_sec;
12687
12688 p = bfd_zalloc (htab->glink_eh_frame->owner, htab->glink_eh_frame->size);
12689 if (p == NULL)
12690 return FALSE;
12691 htab->glink_eh_frame->contents = p;
12692 last_fde = p;
12693
12694 memcpy (p, glink_eh_frame_cie, sizeof (glink_eh_frame_cie));
12695 /* CIE length (rewrite in case little-endian). */
12696 last_fde_len = sizeof (glink_eh_frame_cie) - 4;
12697 bfd_put_32 (htab->elf.dynobj, last_fde_len, p);
12698 p += sizeof (glink_eh_frame_cie);
12699
12700 for (stub_sec = htab->params->stub_bfd->sections;
12701 stub_sec != NULL;
12702 stub_sec = stub_sec->next)
12703 if ((stub_sec->flags & SEC_LINKER_CREATED) == 0)
12704 {
12705 last_fde = p;
12706 last_fde_len = 20;
12707 /* FDE length. */
12708 bfd_put_32 (htab->elf.dynobj, 20, p);
12709 p += 4;
12710 /* CIE pointer. */
12711 val = p - htab->glink_eh_frame->contents;
12712 bfd_put_32 (htab->elf.dynobj, val, p);
12713 p += 4;
12714 /* Offset to stub section, written later. */
12715 p += 4;
12716 /* stub section size. */
12717 bfd_put_32 (htab->elf.dynobj, stub_sec->size, p);
12718 p += 4;
12719 /* Augmentation. */
12720 p += 1;
12721 /* Pad. */
12722 p += 7;
12723 }
12724 if (htab->glink != NULL && htab->glink->size != 0)
12725 {
12726 last_fde = p;
12727 last_fde_len = 20;
12728 /* FDE length. */
12729 bfd_put_32 (htab->elf.dynobj, 20, p);
12730 p += 4;
12731 /* CIE pointer. */
12732 val = p - htab->glink_eh_frame->contents;
12733 bfd_put_32 (htab->elf.dynobj, val, p);
12734 p += 4;
12735 /* Offset to .glink, written later. */
12736 p += 4;
12737 /* .glink size. */
12738 bfd_put_32 (htab->elf.dynobj, htab->glink->size - 8, p);
12739 p += 4;
12740 /* Augmentation. */
12741 p += 1;
12742
12743 *p++ = DW_CFA_advance_loc + 1;
12744 *p++ = DW_CFA_register;
12745 *p++ = 65;
9f08fa5c 12746 *p++ = htab->opd_abi ? 12 : 0;
da44f4e5
AM		 12747 *p++ = DW_CFA_advance_loc + 4;
12748 *p++ = DW_CFA_restore_extended;
12749 *p++ = 65;
12750 }
12751 /* Subsume any padding into the last FDE if user .eh_frame
12752 sections are aligned more than glink_eh_frame. Otherwise any
12753 zero padding will be seen as a terminator. */
12754 size = p - htab->glink_eh_frame->contents;
12755 align = 1;
12756 align <<= htab->glink_eh_frame->output_section->alignment_power;
12757 align -= 1;
12758 pad = ((size + align) & ~align) - size;
12759 htab->glink_eh_frame->size = size + pad;
12760 bfd_put_32 (htab->elf.dynobj, last_fde_len + pad, last_fde);
12761 }
12762
d969d15f
AM		 12763 maybe_strip_output (info, htab->brlt);
12764 if (htab->glink_eh_frame != NULL)
12765 maybe_strip_output (info, htab->glink_eh_frame);
721956f4 12766
b34976b6 12767 return TRUE;
721956f4
AM		 12768}
12769
12770/* Called after we have determined section placement. If sections
805fc799 12771 move, we'll be called again. Provide a value for TOCstart. */
721956f4 12772
805fc799 12773bfd_vma
1c865ab2 12774ppc64_elf_set_toc (struct bfd_link_info *info, bfd *obfd)
721956f4 12775{
805fc799 12776 asection *s;
a27e685f 12777 bfd_vma TOCstart, adjust;
721956f4 12778
43417696
AM		 12779 if (info != NULL)
12780 {
12781 struct elf_link_hash_entry *h;
12782 struct elf_link_hash_table *htab = elf_hash_table (info);
12783
12784 if (is_elf_hash_table (htab)
12785 && htab->hgot != NULL)
12786 h = htab->hgot;
12787 else
12788 {
12789 h = elf_link_hash_lookup (htab, ".TOC.", FALSE, FALSE, TRUE);
12790 if (is_elf_hash_table (htab))
12791 htab->hgot = h;
12792 }
12793 if (h != NULL
12794 && h->root.type == bfd_link_hash_defined
12795 && !h->root.linker_def
12796 && (!is_elf_hash_table (htab)
12797 || h->def_regular))
12798 {
12799 TOCstart = (h->root.u.def.value - TOC_BASE_OFF
12800 + h->root.u.def.section->output_offset
12801 + h->root.u.def.section->output_section->vma);
12802 _bfd_set_gp_value (obfd, TOCstart);
12803 return TOCstart;
12804 }
12805 }
12806
805fc799
AM		 12807 /* The TOC consists of sections .got, .toc, .tocbss, .plt in that
12808 order. The TOC starts where the first of these sections starts. */
12809 s = bfd_get_section_by_name (obfd, ".got");
e054468f 12810 if (s == NULL || (s->flags & SEC_EXCLUDE) != 0)
805fc799 12811 s = bfd_get_section_by_name (obfd, ".toc");
e054468f 12812 if (s == NULL || (s->flags & SEC_EXCLUDE) != 0)
805fc799 12813 s = bfd_get_section_by_name (obfd, ".tocbss");
e054468f 12814 if (s == NULL || (s->flags & SEC_EXCLUDE) != 0)
805fc799 12815 s = bfd_get_section_by_name (obfd, ".plt");
e054468f 12816 if (s == NULL || (s->flags & SEC_EXCLUDE) != 0)
805fc799
AM		 12817 {
12818 /* This may happen for
12819 o references to TOC base (SYM@toc / TOC[tc0]) without a
12820 .toc directive
12821 o bad linker script
12822 o --gc-sections and empty TOC sections
12823
12824 FIXME: Warn user? */
12825
12826 /* Look for a likely section. We probably won't even be
12827 using TOCstart. */
12828 for (s = obfd->sections; s != NULL; s = s->next)
e054468f
AM		 12829 if ((s->flags & (SEC_ALLOC | SEC_SMALL_DATA | SEC_READONLY
12830 | SEC_EXCLUDE))
805fc799
AM		 12831 == (SEC_ALLOC | SEC_SMALL_DATA))
12832 break;
721956f4 12833 if (s == NULL)
805fc799 12834 for (s = obfd->sections; s != NULL; s = s->next)
e054468f 12835 if ((s->flags & (SEC_ALLOC | SEC_SMALL_DATA | SEC_EXCLUDE))
805fc799
AM		 12836 == (SEC_ALLOC | SEC_SMALL_DATA))
12837 break;
721956f4 12838 if (s == NULL)
805fc799 12839 for (s = obfd->sections; s != NULL; s = s->next)
e054468f
AM		 12840 if ((s->flags & (SEC_ALLOC | SEC_READONLY | SEC_EXCLUDE))
12841 == SEC_ALLOC)
805fc799 12842 break;
721956f4 12843 if (s == NULL)
805fc799 12844 for (s = obfd->sections; s != NULL; s = s->next)
e054468f 12845 if ((s->flags & (SEC_ALLOC | SEC_EXCLUDE)) == SEC_ALLOC)
805fc799
AM		 12846 break;
12847 }
721956f4 12848
805fc799
AM		 12849 TOCstart = 0;
12850 if (s != NULL)
12851 TOCstart = s->output_section->vma + s->output_offset;
721956f4 12852
a27e685f
AM		 12853 /* Force alignment. */
12854 adjust = TOCstart & (TOC_BASE_ALIGN - 1);
12855 TOCstart -= adjust;
1c865ab2
AM		 12856 _bfd_set_gp_value (obfd, TOCstart);
12857
810d4e75 12858 if (info != NULL && s != NULL)
1c865ab2
AM		 12859 {
12860 struct ppc_link_hash_table *htab = ppc_hash_table (info);
12861
810d4e75
AM		 12862 if (htab != NULL)
12863 {
12864 if (htab->elf.hgot != NULL)
12865 {
a27e685f 12866 htab->elf.hgot->root.u.def.value = TOC_BASE_OFF - adjust;
810d4e75
AM		 12867 htab->elf.hgot->root.u.def.section = s;
12868 }
12869 }
12870 else
1c865ab2 12871 {
810d4e75
AM		 12872 struct bfd_link_hash_entry *bh = NULL;
12873 _bfd_generic_link_add_one_symbol (info, obfd, ".TOC.", BSF_GLOBAL,
a27e685f
AM		 12874 s, TOC_BASE_OFF - adjust,
12875 NULL, FALSE, FALSE, &bh);
1c865ab2
AM		 12876 }
12877 }
805fc799 12878 return TOCstart;
721956f4
AM		 12879}
12880
a345bc8d
AM		 12881/* Called via elf_link_hash_traverse from ppc64_elf_build_stubs to
12882 write out any global entry stubs. */
12883
12884static bfd_boolean
12885build_global_entry_stubs (struct elf_link_hash_entry *h, void *inf)
12886{
12887 struct bfd_link_info *info;
12888 struct ppc_link_hash_table *htab;
12889 struct plt_entry *pent;
12890 asection *s;
12891
12892 if (h->root.type == bfd_link_hash_indirect)
12893 return TRUE;
12894
12895 if (!h->pointer_equality_needed)
12896 return TRUE;
12897
12898 if (h->def_regular)
12899 return TRUE;
12900
12901 info = inf;
12902 htab = ppc_hash_table (info);
12903 if (htab == NULL)
12904 return FALSE;
12905
12906 s = htab->glink;
12907 for (pent = h->plt.plist; pent != NULL; pent = pent->next)
12908 if (pent->plt.offset != (bfd_vma) -1
12909 && pent->addend == 0)
12910 {
12911 bfd_byte *p;
12912 asection *plt;
12913 bfd_vma off;
12914
a345bc8d 12915 p = s->contents + h->root.u.def.value;
33e44f2e 12916 plt = htab->elf.splt;
a345bc8d
AM		 12917 if (!htab->elf.dynamic_sections_created
12918 || h->dynindx == -1)
33e44f2e 12919 plt = htab->elf.iplt;
a345bc8d
AM		 12920 off = pent->plt.offset + plt->output_offset + plt->output_section->vma;
12921 off -= h->root.u.def.value + s->output_offset + s->output_section->vma;
12922
12923 if (off + 0x80008000 > 0xffffffff || (off & 3) != 0)
12924 {
12925 info->callbacks->einfo
12926 (_("%P: linkage table error against `%T'\n"),
12927 h->root.root.string);
12928 bfd_set_error (bfd_error_bad_value);
12929 htab->stub_error = TRUE;
12930 }
12931
7341d5e2
AM		 12932 htab->stub_count[ppc_stub_global_entry - 1] += 1;
12933 if (htab->params->emit_stub_syms)
12934 {
12935 size_t len = strlen (h->root.root.string);
12936 char *name = bfd_malloc (sizeof "12345678.global_entry." + len);
12937
12938 if (name == NULL)
12939 return FALSE;
12940
12941 sprintf (name, "%08x.global_entry.%s", s->id, h->root.root.string);
12942 h = elf_link_hash_lookup (&htab->elf, name, TRUE, FALSE, FALSE);
12943 if (h == NULL)
12944 return FALSE;
12945 if (h->root.type == bfd_link_hash_new)
12946 {
12947 h->root.type = bfd_link_hash_defined;
12948 h->root.u.def.section = s;
12949 h->root.u.def.value = p - s->contents;
12950 h->ref_regular = 1;
12951 h->def_regular = 1;
12952 h->ref_regular_nonweak = 1;
12953 h->forced_local = 1;
12954 h->non_elf = 0;
2ec55de3 12955 h->root.linker_def = 1;
7341d5e2
AM		 12956 }
12957 }
12958
a345bc8d
AM		 12959 if (PPC_HA (off) != 0)
12960 {
12961 bfd_put_32 (s->owner, ADDIS_R12_R12 | PPC_HA (off), p);
12962 p += 4;
12963 }
12964 bfd_put_32 (s->owner, LD_R12_0R12 | PPC_LO (off), p);
12965 p += 4;
12966 bfd_put_32 (s->owner, MTCTR_R12, p);
12967 p += 4;
12968 bfd_put_32 (s->owner, BCTR, p);
12969 break;
12970 }
12971 return TRUE;
12972}
12973
721956f4
AM		 12974/* Build all the stubs associated with the current output file.
12975 The stubs are kept in a hash table attached to the main linker
12976 hash table. This function is called via gldelf64ppc_finish. */
12977
b34976b6 12978bfd_boolean
e7d1c40c 12979ppc64_elf_build_stubs (struct bfd_link_info *info,
4ce794b7 12980 char **stats)
5d1634d7
AM		 12981{
12982 struct ppc_link_hash_table *htab = ppc_hash_table (info);
a4b6fadd 12983 struct map_stub *group;
721956f4 12984 asection *stub_sec;
5d1634d7 12985 bfd_byte *p;
e717da7e 12986 int stub_sec_count = 0;
5d1634d7 12987
4dfe6ac6
NC		 12988 if (htab == NULL)
12989 return FALSE;
12990
eea6121a 12991 /* Allocate memory to hold the linker stubs. */
e7d1c40c 12992 for (stub_sec = htab->params->stub_bfd->sections;
721956f4
AM		 12993 stub_sec != NULL;
12994 stub_sec = stub_sec->next)
eea6121a
AM		 12995 if ((stub_sec->flags & SEC_LINKER_CREATED) == 0
12996 && stub_sec->size != 0)
e717da7e 12997 {
e7d1c40c 12998 stub_sec->contents = bfd_zalloc (htab->params->stub_bfd, stub_sec->size);
eea6121a
AM		 12999 if (stub_sec->contents == NULL)
13000 return FALSE;
eea6121a 13001 stub_sec->size = 0;
e717da7e 13002 }
5d1634d7 13003
23eb7e01 13004 if (htab->glink != NULL && htab->glink->size != 0)
5d1634d7 13005 {
9f951329 13006 unsigned int indx;
ad8e1ba5 13007 bfd_vma plt0;
9f951329 13008
721956f4 13009 /* Build the .glink plt call stub. */
e7d1c40c 13010 if (htab->params->emit_stub_syms)
97b639ba
AM		 13011 {
13012 struct elf_link_hash_entry *h;
468392fb
AM		 13013 h = elf_link_hash_lookup (&htab->elf, "__glink_PLTresolve",
13014 TRUE, FALSE, FALSE);
97b639ba
AM		 13015 if (h == NULL)
13016 return FALSE;
13017 if (h->root.type == bfd_link_hash_new)
13018 {
13019 h->root.type = bfd_link_hash_defined;
13020 h->root.u.def.section = htab->glink;
ee4bf8d2 13021 h->root.u.def.value = 8;
f5385ebf
AM		 13022 h->ref_regular = 1;
13023 h->def_regular = 1;
13024 h->ref_regular_nonweak = 1;
13025 h->forced_local = 1;
13026 h->non_elf = 0;
2ec55de3 13027 h->root.linker_def = 1;
97b639ba
AM		 13028 }
13029 }
33e44f2e
AM		 13030 plt0 = (htab->elf.splt->output_section->vma
13031 + htab->elf.splt->output_offset
13032 - 16);
176a0d42
AM		 13033 if (info->emitrelocations)
13034 {
13035 Elf_Internal_Rela *r = get_relocs (htab->glink, 1);
13036 if (r == NULL)
13037 return FALSE;
13038 r->r_offset = (htab->glink->output_offset
13039 + htab->glink->output_section->vma);
13040 r->r_info = ELF64_R_INFO (0, R_PPC64_REL64);
13041 r->r_addend = plt0;
13042 }
4ce794b7 13043 p = htab->glink->contents;
176a0d42 13044 plt0 -= htab->glink->output_section->vma + htab->glink->output_offset;
ee4bf8d2
AM		 13045 bfd_put_64 (htab->glink->owner, plt0, p);
13046 p += 8;
b9e5796b
AM		 13047 if (htab->opd_abi)
13048 {
13049 bfd_put_32 (htab->glink->owner, MFLR_R12, p);
13050 p += 4;
13051 bfd_put_32 (htab->glink->owner, BCL_20_31, p);
13052 p += 4;
13053 bfd_put_32 (htab->glink->owner, MFLR_R11, p);
13054 p += 4;
13055 bfd_put_32 (htab->glink->owner, LD_R2_0R11 | (-16 & 0xfffc), p);
13056 p += 4;
13057 bfd_put_32 (htab->glink->owner, MTLR_R12, p);
13058 p += 4;
13059 bfd_put_32 (htab->glink->owner, ADD_R11_R2_R11, p);
13060 p += 4;
13061 bfd_put_32 (htab->glink->owner, LD_R12_0R11, p);
13062 p += 4;
13063 bfd_put_32 (htab->glink->owner, LD_R2_0R11 | 8, p);
13064 p += 4;
13065 bfd_put_32 (htab->glink->owner, MTCTR_R12, p);
13066 p += 4;
13067 bfd_put_32 (htab->glink->owner, LD_R11_0R11 | 16, p);
13068 p += 4;
13069 }
13070 else
13071 {
13072 bfd_put_32 (htab->glink->owner, MFLR_R0, p);
13073 p += 4;
13074 bfd_put_32 (htab->glink->owner, BCL_20_31, p);
13075 p += 4;
13076 bfd_put_32 (htab->glink->owner, MFLR_R11, p);
13077 p += 4;
13078 bfd_put_32 (htab->glink->owner, LD_R2_0R11 | (-16 & 0xfffc), p);
13079 p += 4;
13080 bfd_put_32 (htab->glink->owner, MTLR_R0, p);
13081 p += 4;
13082 bfd_put_32 (htab->glink->owner, SUB_R12_R12_R11, p);
13083 p += 4;
13084 bfd_put_32 (htab->glink->owner, ADD_R11_R2_R11, p);
13085 p += 4;
13086 bfd_put_32 (htab->glink->owner, ADDI_R0_R12 | (-48 & 0xffff), p);
13087 p += 4;
13088 bfd_put_32 (htab->glink->owner, LD_R12_0R11, p);
13089 p += 4;
13090 bfd_put_32 (htab->glink->owner, SRDI_R0_R0_2, p);
13091 p += 4;
13092 bfd_put_32 (htab->glink->owner, MTCTR_R12, p);
13093 p += 4;
13094 bfd_put_32 (htab->glink->owner, LD_R11_0R11 | 8, p);
13095 p += 4;
13096 }
4ce794b7 13097 bfd_put_32 (htab->glink->owner, BCTR, p);
ad8e1ba5 13098 p += 4;
ee4bf8d2
AM		 13099 while (p - htab->glink->contents < GLINK_CALL_STUB_SIZE)
13100 {
13101 bfd_put_32 (htab->glink->owner, NOP, p);
13102 p += 4;
13103 }
ad8e1ba5 13104
9f951329
AM		 13105 /* Build the .glink lazy link call stubs. */
13106 indx = 0;
a345bc8d 13107 while (p < htab->glink->contents + htab->glink->rawsize)
9f951329 13108 {
b9e5796b 13109 if (htab->opd_abi)
9f951329 13110 {
b9e5796b
AM		 13111 if (indx < 0x8000)
13112 {
13113 bfd_put_32 (htab->glink->owner, LI_R0_0 | indx, p);
13114 p += 4;
13115 }
13116 else
13117 {
13118 bfd_put_32 (htab->glink->owner, LIS_R0_0 | PPC_HI (indx), p);
13119 p += 4;
13120 bfd_put_32 (htab->glink->owner, ORI_R0_R0_0 | PPC_LO (indx),
13121 p);
13122 p += 4;
13123 }
9f951329 13124 }
4ce794b7 13125 bfd_put_32 (htab->glink->owner,
ee4bf8d2 13126 B_DOT | ((htab->glink->contents - p + 8) & 0x3fffffc), p);
a16d5acb 13127 indx++;
9f951329
AM		 13128 p += 4;
13129 }
a345bc8d
AM		 13130
13131 /* Build .glink global entry stubs. */
13132 if (htab->glink->size > htab->glink->rawsize)
afe397ea 13133 elf_link_hash_traverse (&htab->elf, build_global_entry_stubs, info);
5d1634d7 13134 }
5d1634d7 13135
7341d5e2 13136 if (htab->brlt != NULL && htab->brlt->size != 0)
721956f4 13137 {
4ce794b7 13138 htab->brlt->contents = bfd_zalloc (htab->brlt->owner,
eea6121a 13139 htab->brlt->size);
4ce794b7 13140 if (htab->brlt->contents == NULL)
b34976b6 13141 return FALSE;
721956f4 13142 }
ee75fd95 13143 if (htab->relbrlt != NULL && htab->relbrlt->size != 0)
63bc6f6c
AM		 13144 {
13145 htab->relbrlt->contents = bfd_zalloc (htab->relbrlt->owner,
eea6121a 13146 htab->relbrlt->size);
63bc6f6c
AM		 13147 if (htab->relbrlt->contents == NULL)
13148 return FALSE;
13149 }
5d1634d7 13150
721956f4
AM		 13151 /* Build the stubs as directed by the stub hash table. */
13152 bfd_hash_traverse (&htab->stub_hash_table, ppc_build_one_stub, info);
5d1634d7 13153
a4b6fadd
AM		 13154 for (group = htab->group; group != NULL; group = group->next)
13155 if (group->needs_save_res)
13156 {
13157 stub_sec = group->stub_sec;
13158 memcpy (stub_sec->contents + stub_sec->size, htab->sfpr->contents,
13159 htab->sfpr->size);
13160 if (htab->params->emit_stub_syms)
13161 {
13162 unsigned int i;
13163
13164 for (i = 0; i < ARRAY_SIZE (save_res_funcs); i++)
13165 if (!sfpr_define (info, &save_res_funcs[i], stub_sec))
13166 return FALSE;
13167 }
13168 stub_sec->size += htab->sfpr->size;
13169 }
13170
aa8a7074
AM		 13171 if (htab->relbrlt != NULL)
13172 htab->relbrlt->reloc_count = 0;
13173
e7d1c40c
AM		 13174 if (htab->params->plt_stub_align != 0)
13175 for (stub_sec = htab->params->stub_bfd->sections;
794e51c0
AM		 13176 stub_sec != NULL;
13177 stub_sec = stub_sec->next)
13178 if ((stub_sec->flags & SEC_LINKER_CREATED) == 0)
e7d1c40c
AM		 13179 stub_sec->size = ((stub_sec->size
13180 + (1 << htab->params->plt_stub_align) - 1)
29f628db 13181 & -(1 << htab->params->plt_stub_align));
794e51c0 13182
e7d1c40c 13183 for (stub_sec = htab->params->stub_bfd->sections;
721956f4
AM		 13184 stub_sec != NULL;
13185 stub_sec = stub_sec->next)
e717da7e
AM		 13186 if ((stub_sec->flags & SEC_LINKER_CREATED) == 0)
13187 {
13188 stub_sec_count += 1;
c9301e31
AM		 13189 if (stub_sec->rawsize != stub_sec->size
13190 && (htab->stub_iteration <= STUB_SHRINK_ITER
13191 || stub_sec->rawsize < stub_sec->size))
e717da7e
AM		 13192 break;
13193 }
5d1634d7 13194
da44f4e5
AM		 13195 /* Note that the glink_eh_frame check here is not only testing that
13196 the generated size matched the calculated size but also that
13197 bfd_elf_discard_info didn't make any changes to the section. */
721956f4 13198 if (stub_sec != NULL
58d180e8
AM		 13199 || (htab->glink_eh_frame != NULL
13200 && htab->glink_eh_frame->rawsize != htab->glink_eh_frame->size))
5d1634d7 13201 {
b34976b6 13202 htab->stub_error = TRUE;
8de848d8 13203 info->callbacks->einfo (_("%P: stubs don't match calculated size\n"));
5d1634d7 13204 }
721956f4 13205
d2a300cf
AM		 13206 if (htab->stub_error)
13207 return FALSE;
13208
13209 if (stats != NULL)
13210 {
13211 *stats = bfd_malloc (500);
13212 if (*stats == NULL)
13213 return FALSE;
13214
ee75fd95 13215 sprintf (*stats, _("linker stubs in %u group%s\n"
d2a300cf
AM		 13216 " branch %lu\n"
13217 " toc adjust %lu\n"
13218 " long branch %lu\n"
13219 " long toc adj %lu\n"
794e51c0 13220 " plt call %lu\n"
7341d5e2
AM		 13221 " plt call toc %lu\n"
13222 " global entry %lu"),
e717da7e 13223 stub_sec_count,
ee75fd95 13224 stub_sec_count == 1 ? "" : "s",
4ce794b7
AM		 13225 htab->stub_count[ppc_stub_long_branch - 1],
13226 htab->stub_count[ppc_stub_long_branch_r2off - 1],
13227 htab->stub_count[ppc_stub_plt_branch - 1],
13228 htab->stub_count[ppc_stub_plt_branch_r2off - 1],
794e51c0 13229 htab->stub_count[ppc_stub_plt_call - 1],
7341d5e2
AM		 13230 htab->stub_count[ppc_stub_plt_call_r2save - 1],
13231 htab->stub_count[ppc_stub_global_entry - 1]);
d2a300cf
AM		 13232 }
13233 return TRUE;
5bd4f169
AM		 13234}
13235
99877b66
AM		 13236/* This function undoes the changes made by add_symbol_adjust. */
13237
13238static bfd_boolean
13239undo_symbol_twiddle (struct elf_link_hash_entry *h, void *inf ATTRIBUTE_UNUSED)
13240{
13241 struct ppc_link_hash_entry *eh;
13242
13243 if (h->root.type == bfd_link_hash_indirect)
13244 return TRUE;
13245
99877b66
AM		 13246 eh = (struct ppc_link_hash_entry *) h;
13247 if (eh->elf.root.type != bfd_link_hash_undefweak || !eh->was_undefined)
13248 return TRUE;
13249
13250 eh->elf.root.type = bfd_link_hash_undefined;
13251 return TRUE;
13252}
13253
13254void
13255ppc64_elf_restore_symbols (struct bfd_link_info *info)
13256{
13257 struct ppc_link_hash_table *htab = ppc_hash_table (info);
4dfe6ac6
NC		 13258
13259 if (htab != NULL)
13260 elf_link_hash_traverse (&htab->elf, undo_symbol_twiddle, info);
99877b66
AM		 13261}
13262
60124e18
AM		 13263/* What to do when ld finds relocations against symbols defined in
13264 discarded sections. */
13265
13266static unsigned int
13267ppc64_elf_action_discarded (asection *sec)
13268{
13269 if (strcmp (".opd", sec->name) == 0)
13270 return 0;
13271
13272 if (strcmp (".toc", sec->name) == 0)
13273 return 0;
13274
bce50a28
JJ		 13275 if (strcmp (".toc1", sec->name) == 0)
13276 return 0;
13277
60124e18
AM		 13278 return _bfd_elf_default_action_discarded (sec);
13279}
13280
5bd4f169
AM		 13281/* The RELOCATE_SECTION function is called by the ELF backend linker
13282 to handle the relocations for a section.
13283
13284 The relocs are always passed as Rela structures; if the section
13285 actually uses Rel structures, the r_addend field will always be
13286 zero.
13287
13288 This function is responsible for adjust the section contents as
13289 necessary, and (if using Rela relocs and generating a
1049f94e 13290 relocatable output file) adjusting the reloc addend as
5bd4f169
AM		 13291 necessary.
13292
13293 This function does not have to worry about setting the reloc
13294 address or the reloc symbol index.
13295
13296 LOCAL_SYMS is a pointer to the swapped in local symbols.
13297
13298 LOCAL_SECTIONS is an array giving the section in the input file
13299 corresponding to the st_shndx field of each local symbol.
13300
13301 The global hash table entry for the global symbols can be found
13302 via elf_sym_hashes (input_bfd).
13303
1049f94e 13304 When generating relocatable output, this function must handle
5bd4f169
AM		 13305 STB_LOCAL/STT_SECTION symbols specially. The output symbol is
13306 going to be the section symbol corresponding to the output
13307 section, which means that the addend must be adjusted
13308 accordingly. */
13309
b34976b6 13310static bfd_boolean
4ce794b7
AM		 13311ppc64_elf_relocate_section (bfd *output_bfd,
13312 struct bfd_link_info *info,
13313 bfd *input_bfd,
13314 asection *input_section,
13315 bfd_byte *contents,
13316 Elf_Internal_Rela *relocs,
13317 Elf_Internal_Sym *local_syms,
13318 asection **local_sections)
5bd4f169 13319{
65f38f15 13320 struct ppc_link_hash_table *htab;
5bd4f169
AM		 13321 Elf_Internal_Shdr *symtab_hdr;
13322 struct elf_link_hash_entry **sym_hashes;
5bd4f169 13323 Elf_Internal_Rela *rel;
c316a17c 13324 Elf_Internal_Rela *wrel;
5bd4f169 13325 Elf_Internal_Rela *relend;
411e1bfb
AM		 13326 Elf_Internal_Rela outrel;
13327 bfd_byte *loc;
411e1bfb 13328 struct got_entry **local_got_ents;
5bd4f169 13329 bfd_vma TOCstart;
b34976b6
AM		 13330 bfd_boolean ret = TRUE;
13331 bfd_boolean is_opd;
794e51c0
AM		 13332 /* Assume 'at' branch hints. */
13333 bfd_boolean is_isa_v2 = TRUE;
4fe5ca5b 13334 bfd_vma d_offset = (bfd_big_endian (output_bfd) ? 2 : 0);
5bd4f169 13335
65f38f15 13336 /* Initialize howto table if needed. */
5bd4f169 13337 if (!ppc64_elf_howto_table[R_PPC64_ADDR32])
5bd4f169
AM		 13338 ppc_howto_init ();
13339
65f38f15 13340 htab = ppc_hash_table (info);
4dfe6ac6
NC		 13341 if (htab == NULL)
13342 return FALSE;
ee75fd95
AM		 13343
13344 /* Don't relocate stub sections. */
e7d1c40c 13345 if (input_section->owner == htab->params->stub_bfd)
ee75fd95
AM		 13346 return TRUE;
13347
0c8d6e5c 13348 BFD_ASSERT (is_ppc64_elf (input_bfd));
0ffa91dd 13349
411e1bfb 13350 local_got_ents = elf_local_got_ents (input_bfd);
5bd4f169 13351 TOCstart = elf_gp (output_bfd);
0ffa91dd 13352 symtab_hdr = &elf_symtab_hdr (input_bfd);
5bd4f169 13353 sym_hashes = elf_sym_hashes (input_bfd);
7c8fe5c4 13354 is_opd = ppc64_elf_section_data (input_section)->sec_type == sec_opd;
65f38f15 13355
c316a17c 13356 rel = wrel = relocs;
5bd4f169 13357 relend = relocs + input_section->reloc_count;
c316a17c 13358 for (; rel < relend; wrel++, rel++)
5bd4f169 13359 {
04c9666a 13360 enum elf_ppc64_reloc_type r_type;
31c76678 13361 bfd_vma addend;
5bd4f169
AM		 13362 bfd_reloc_status_type r;
13363 Elf_Internal_Sym *sym;
13364 asection *sec;
039b3fef
AM		 13365 struct elf_link_hash_entry *h_elf;
13366 struct ppc_link_hash_entry *h;
13367 struct ppc_link_hash_entry *fdh;
5bd4f169 13368 const char *sym_name;
0d4792f7 13369 unsigned long r_symndx, toc_symndx;
3a71aa26 13370 bfd_vma toc_addend;
f961d9dd
AM		 13371 unsigned char tls_mask, tls_gd, tls_type;
13372 unsigned char sym_type;
5bd4f169 13373 bfd_vma relocation;
b34976b6
AM		 13374 bfd_boolean unresolved_reloc;
13375 bfd_boolean warned;
bc30df16 13376 enum { DEST_NORMAL, DEST_OPD, DEST_STUB } reloc_dest;
67f0cbdb 13377 unsigned int insn;
e11840f9 13378 unsigned int mask;
721956f4
AM		 13379 struct ppc_stub_hash_entry *stub_entry;
13380 bfd_vma max_br_offset;
13381 bfd_vma from;
c316a17c 13382 Elf_Internal_Rela orig_rel;
b80eed39
AM		 13383 reloc_howto_type *howto;
13384 struct reloc_howto_struct alt_howto;
5bd4f169 13385
c316a17c
AM		 13386 again:
13387 orig_rel = *rel;
13388
4ce794b7 13389 r_type = ELF64_R_TYPE (rel->r_info);
5bd4f169 13390 r_symndx = ELF64_R_SYM (rel->r_info);
ee87f2da
AM		 13391
13392 /* For old style R_PPC64_TOC relocs with a zero symbol, use the
13393 symbol of the previous ADDR64 reloc. The symbol gives us the
13394 proper TOC base to use. */
13395 if (rel->r_info == ELF64_R_INFO (0, R_PPC64_TOC)
c316a17c
AM		 13396 && wrel != relocs
13397 && ELF64_R_TYPE (wrel[-1].r_info) == R_PPC64_ADDR64
ee87f2da 13398 && is_opd)
c316a17c 13399 r_symndx = ELF64_R_SYM (wrel[-1].r_info);
ee87f2da 13400
4ce794b7
AM		 13401 sym = NULL;
13402 sec = NULL;
039b3fef 13403 h_elf = NULL;
4ce794b7 13404 sym_name = NULL;
b34976b6
AM		 13405 unresolved_reloc = FALSE;
13406 warned = FALSE;
65f38f15 13407
0b13192e 13408 if (r_symndx < symtab_hdr->sh_info)
5bd4f169
AM		 13409 {
13410 /* It's a local symbol. */
74f0fb50 13411 struct _opd_sec_data *opd;
4025353c 13412
5bd4f169
AM		 13413 sym = local_syms + r_symndx;
13414 sec = local_sections[r_symndx];
26c61ae5 13415 sym_name = bfd_elf_sym_name (input_bfd, symtab_hdr, sym, sec);
0d4792f7 13416 sym_type = ELF64_ST_TYPE (sym->st_info);
8517fae7 13417 relocation = _bfd_elf_rela_local_sym (output_bfd, sym, &sec, rel);
74f0fb50
AM		 13418 opd = get_opd_info (sec);
13419 if (opd != NULL && opd->adjust != NULL)
1e2f5b6e 13420 {
51aecdc5
AM		 13421 long adjust = opd->adjust[OPD_NDX (sym->st_value
13422 + rel->r_addend)];
4025353c
AM		 13423 if (adjust == -1)
13424 relocation = 0;
13425 else
4cc603a5
AM		 13426 {
13427 /* If this is a relocation against the opd section sym
13428 and we have edited .opd, adjust the reloc addend so
13429 that ld -r and ld --emit-relocs output is correct.
13430 If it is a reloc against some other .opd symbol,
13431 then the symbol value will be adjusted later. */
13432 if (ELF_ST_TYPE (sym->st_info) == STT_SECTION)
13433 rel->r_addend += adjust;
13434 else
13435 relocation += adjust;
13436 }
1e2f5b6e 13437 }
5bd4f169
AM		 13438 }
13439 else
13440 {
62d887d4
L		 13441 bfd_boolean ignored;
13442
b2a8e766
AM		 13443 RELOC_FOR_GLOBAL_SYMBOL (info, input_bfd, input_section, rel,
13444 r_symndx, symtab_hdr, sym_hashes,
039b3fef 13445 h_elf, sec, relocation,
62d887d4 13446 unresolved_reloc, warned, ignored);
039b3fef
AM		 13447 sym_name = h_elf->root.root.string;
13448 sym_type = h_elf->type;
b69fdb4e
AM		 13449 if (sec != NULL
13450 && sec->owner == output_bfd
13451 && strcmp (sec->name, ".opd") == 0)
13452 {
13453 /* This is a symbol defined in a linker script. All
13454 such are defined in output sections, even those
13455 defined by simple assignment from a symbol defined in
13456 an input section. Transfer the symbol to an
13457 appropriate input .opd section, so that a branch to
13458 this symbol will be mapped to the location specified
13459 by the opd entry. */
13460 struct bfd_link_order *lo;
13461 for (lo = sec->map_head.link_order; lo != NULL; lo = lo->next)
13462 if (lo->type == bfd_indirect_link_order)
13463 {
13464 asection *isec = lo->u.indirect.section;
13465 if (h_elf->root.u.def.value >= isec->output_offset
13466 && h_elf->root.u.def.value < (isec->output_offset
13467 + isec->size))
13468 {
13469 h_elf->root.u.def.value -= isec->output_offset;
13470 h_elf->root.u.def.section = isec;
13471 sec = isec;
13472 break;
13473 }
13474 }
13475 }
5bd4f169 13476 }
039b3fef 13477 h = (struct ppc_link_hash_entry *) h_elf;
5bd4f169 13478
dbaa2011 13479 if (sec != NULL && discarded_section (sec))
c316a17c
AM		 13480 {
13481 _bfd_clear_contents (ppc64_elf_howto_table[r_type],
13482 input_bfd, input_section,
13483 contents + rel->r_offset);
13484 wrel->r_offset = rel->r_offset;
13485 wrel->r_info = 0;
13486 wrel->r_addend = 0;
13487
13488 /* For ld -r, remove relocations in debug sections against
13489 sections defined in discarded sections. Not done for
13490 non-debug to preserve relocs in .eh_frame which the
13491 eh_frame editing code expects to be present. */
13492 if (bfd_link_relocatable (info)
13493 && (input_section->flags & SEC_DEBUGGING))
13494 wrel--;
13495
13496 continue;
13497 }
ab96bf03 13498
0e1862bb 13499 if (bfd_link_relocatable (info))
c316a17c 13500 goto copy_reloc;
ab96bf03 13501
f40da81b
AM		 13502 if (h != NULL && &h->elf == htab->elf.hgot)
13503 {
6f20ed8a 13504 relocation = TOCstart + htab->sec_info[input_section->id].toc_off;
f40da81b
AM		 13505 sec = bfd_abs_section_ptr;
13506 unresolved_reloc = FALSE;
13507 }
13508
951fd09b
AM		 13509 /* TLS optimizations. Replace instruction sequences and relocs
13510 based on information we collected in tls_optimize. We edit
13511 RELOCS so that --emit-relocs will output something sensible
13512 for the final instruction stream. */
13513 tls_mask = 0;
13514 tls_gd = 0;
0d4792f7 13515 toc_symndx = 0;
727fc41e
AM		 13516 if (h != NULL)
13517 tls_mask = h->tls_mask;
13518 else if (local_got_ents != NULL)
411e1bfb 13519 {
e054468f
AM		 13520 struct plt_entry **local_plt = (struct plt_entry **)
13521 (local_got_ents + symtab_hdr->sh_info);
f961d9dd 13522 unsigned char *lgot_masks = (unsigned char *)
e054468f 13523 (local_plt + symtab_hdr->sh_info);
727fc41e
AM		 13524 tls_mask = lgot_masks[r_symndx];
13525 }
13526 if (tls_mask == 0
13527 && (r_type == R_PPC64_TLS
13528 || r_type == R_PPC64_TLSGD
13529 || r_type == R_PPC64_TLSLD))
13530 {
13531 /* Check for toc tls entries. */
f961d9dd 13532 unsigned char *toc_tls;
0d4792f7 13533
727fc41e
AM		 13534 if (!get_tls_mask (&toc_tls, &toc_symndx, &toc_addend,
13535 &local_syms, rel, input_bfd))
13536 return FALSE;
0d4792f7 13537
727fc41e
AM		 13538 if (toc_tls)
13539 tls_mask = *toc_tls;
0d4792f7
AM		 13540 }
13541
13542 /* Check that tls relocs are used with tls syms, and non-tls
13543 relocs are used with non-tls syms. */
cf35638d 13544 if (r_symndx != STN_UNDEF
0d4792f7
AM		 13545 && r_type != R_PPC64_NONE
13546 && (h == NULL
039b3fef
AM		 13547 || h->elf.root.type == bfd_link_hash_defined
13548 || h->elf.root.type == bfd_link_hash_defweak)
1d483afe
AM		 13549 && (IS_PPC64_TLS_RELOC (r_type)
13550 != (sym_type == STT_TLS
13551 || (sym_type == STT_SECTION
13552 && (sec->flags & SEC_THREAD_LOCAL) != 0))))
0d4792f7 13553 {
727fc41e
AM		 13554 if (tls_mask != 0
13555 && (r_type == R_PPC64_TLS
13556 || r_type == R_PPC64_TLSGD
13557 || r_type == R_PPC64_TLSLD))
0d4792f7
AM		 13558 /* R_PPC64_TLS is OK against a symbol in the TOC. */
13559 ;
13560 else
25f53a85 13561 info->callbacks->einfo
1d483afe 13562 (!IS_PPC64_TLS_RELOC (r_type)
bc30df16
AM		 13563 ? _("%P: %H: %s used with TLS symbol `%T'\n")
13564 : _("%P: %H: %s used with non-TLS symbol `%T'\n"),
25f53a85 13565 input_bfd, input_section, rel->r_offset,
0d4792f7
AM		 13566 ppc64_elf_howto_table[r_type]->name,
13567 sym_name);
411e1bfb
AM		 13568 }
13569
13570 /* Ensure reloc mapping code below stays sane. */
13571 if (R_PPC64_TOC16_LO_DS != R_PPC64_TOC16_DS + 1
13572 || R_PPC64_TOC16_LO != R_PPC64_TOC16 + 1
13573 || (R_PPC64_GOT_TLSLD16 & 3) != (R_PPC64_GOT_TLSGD16 & 3)
13574 || (R_PPC64_GOT_TLSLD16_LO & 3) != (R_PPC64_GOT_TLSGD16_LO & 3)
13575 || (R_PPC64_GOT_TLSLD16_HI & 3) != (R_PPC64_GOT_TLSGD16_HI & 3)
13576 || (R_PPC64_GOT_TLSLD16_HA & 3) != (R_PPC64_GOT_TLSGD16_HA & 3)
13577 || (R_PPC64_GOT_TLSLD16 & 3) != (R_PPC64_GOT_TPREL16_DS & 3)
13578 || (R_PPC64_GOT_TLSLD16_LO & 3) != (R_PPC64_GOT_TPREL16_LO_DS & 3)
13579 || (R_PPC64_GOT_TLSLD16_HI & 3) != (R_PPC64_GOT_TPREL16_HI & 3)
13580 || (R_PPC64_GOT_TLSLD16_HA & 3) != (R_PPC64_GOT_TPREL16_HA & 3))
13581 abort ();
0d4792f7 13582
411e1bfb
AM		 13583 switch (r_type)
13584 {
13585 default:
411e1bfb
AM		 13586 break;
13587
ba761f19
AM		 13588 case R_PPC64_LO_DS_OPT:
13589 insn = bfd_get_32 (output_bfd, contents + rel->r_offset - d_offset);
13590 if ((insn & (0x3f << 26)) != 58u << 26)
13591 abort ();
13592 insn += (14u << 26) - (58u << 26);
13593 bfd_put_32 (output_bfd, insn, contents + rel->r_offset - d_offset);
13594 r_type = R_PPC64_TOC16_LO;
13595 rel->r_info = ELF64_R_INFO (r_symndx, r_type);
13596 break;
13597
411e1bfb
AM		 13598 case R_PPC64_TOC16:
13599 case R_PPC64_TOC16_LO:
13600 case R_PPC64_TOC16_DS:
13601 case R_PPC64_TOC16_LO_DS:
411e1bfb
AM		 13602 {
13603 /* Check for toc tls entries. */
f961d9dd 13604 unsigned char *toc_tls;
951fd09b 13605 int retval;
411e1bfb 13606
3a71aa26
AM		 13607 retval = get_tls_mask (&toc_tls, &toc_symndx, &toc_addend,
13608 &local_syms, rel, input_bfd);
951fd09b 13609 if (retval == 0)
411e1bfb
AM		 13610 return FALSE;
13611
13612 if (toc_tls)
13613 {
951fd09b 13614 tls_mask = *toc_tls;
411e1bfb
AM		 13615 if (r_type == R_PPC64_TOC16_DS
13616 || r_type == R_PPC64_TOC16_LO_DS)
81407a69
AM		 13617 {
13618 if (tls_mask != 0
13619 && (tls_mask & (TLS_DTPREL | TLS_TPREL)) == 0)
13620 goto toctprel;
13621 }
411e1bfb 13622 else
951fd09b
AM		 13623 {
13624 /* If we found a GD reloc pair, then we might be
13625 doing a GD->IE transition. */
13626 if (retval == 2)
13627 {
13628 tls_gd = TLS_TPRELGD;
13629 if (tls_mask != 0 && (tls_mask & TLS_GD) == 0)
102890f0 13630 goto tls_ldgd_opt;
951fd09b
AM		 13631 }
13632 else if (retval == 3)
13633 {
13634 if (tls_mask != 0 && (tls_mask & TLS_LD) == 0)
102890f0 13635 goto tls_ldgd_opt;
951fd09b
AM		 13636 }
13637 }
411e1bfb
AM		 13638 }
13639 }
13640 break;
13641
9d6ded02
AM		 13642 case R_PPC64_GOT_TPREL16_HI:
13643 case R_PPC64_GOT_TPREL16_HA:
13644 if (tls_mask != 0
13645 && (tls_mask & TLS_TPREL) == 0)
13646 {
13647 rel->r_offset -= d_offset;
13648 bfd_put_32 (output_bfd, NOP, contents + rel->r_offset);
13649 r_type = R_PPC64_NONE;
13650 rel->r_info = ELF64_R_INFO (r_symndx, r_type);
13651 }
13652 break;
13653
411e1bfb
AM		 13654 case R_PPC64_GOT_TPREL16_DS:
13655 case R_PPC64_GOT_TPREL16_LO_DS:
951fd09b
AM		 13656 if (tls_mask != 0
13657 && (tls_mask & TLS_TPREL) == 0)
411e1bfb 13658 {
81407a69 13659 toctprel:
c316a17c
AM		 13660 insn = bfd_get_32 (output_bfd,
13661 contents + rel->r_offset - d_offset);
411e1bfb
AM		 13662 insn &= 31 << 21;
13663 insn |= 0x3c0d0000; /* addis 0,13,0 */
c316a17c
AM		 13664 bfd_put_32 (output_bfd, insn,
13665 contents + rel->r_offset - d_offset);
411e1bfb 13666 r_type = R_PPC64_TPREL16_HA;
0d4792f7
AM		 13667 if (toc_symndx != 0)
13668 {
13669 rel->r_info = ELF64_R_INFO (toc_symndx, r_type);
3a71aa26 13670 rel->r_addend = toc_addend;
0d4792f7
AM		 13671 /* We changed the symbol. Start over in order to
13672 get h, sym, sec etc. right. */
c316a17c 13673 goto again;
0d4792f7
AM		 13674 }
13675 else
13676 rel->r_info = ELF64_R_INFO (r_symndx, r_type);
411e1bfb
AM		 13677 }
13678 break;
13679
13680 case R_PPC64_TLS:
951fd09b
AM		 13681 if (tls_mask != 0
13682 && (tls_mask & TLS_TPREL) == 0)
411e1bfb 13683 {
411e1bfb 13684 insn = bfd_get_32 (output_bfd, contents + rel->r_offset);
2d0f3896
AM		 13685 insn = _bfd_elf_ppc_at_tls_transform (insn, 13);
13686 if (insn == 0)
411e1bfb 13687 abort ();
411e1bfb 13688 bfd_put_32 (output_bfd, insn, contents + rel->r_offset);
411e1bfb 13689 /* Was PPC64_TLS which sits on insn boundary, now
4fe5ca5b
GM		 13690 PPC64_TPREL16_LO which is at low-order half-word. */
13691 rel->r_offset += d_offset;
0d4792f7
AM		 13692 r_type = R_PPC64_TPREL16_LO;
13693 if (toc_symndx != 0)
13694 {
13695 rel->r_info = ELF64_R_INFO (toc_symndx, r_type);
3a71aa26 13696 rel->r_addend = toc_addend;
0d4792f7
AM		 13697 /* We changed the symbol. Start over in order to
13698 get h, sym, sec etc. right. */
c316a17c 13699 goto again;
0d4792f7
AM		 13700 }
13701 else
13702 rel->r_info = ELF64_R_INFO (r_symndx, r_type);
411e1bfb
AM		 13703 }
13704 break;
13705
411e1bfb
AM		 13706 case R_PPC64_GOT_TLSGD16_HI:
13707 case R_PPC64_GOT_TLSGD16_HA:
951fd09b
AM		 13708 tls_gd = TLS_TPRELGD;
13709 if (tls_mask != 0 && (tls_mask & TLS_GD) == 0)
13710 goto tls_gdld_hi;
13711 break;
13712
411e1bfb
AM		 13713 case R_PPC64_GOT_TLSLD16_HI:
13714 case R_PPC64_GOT_TLSLD16_HA:
951fd09b 13715 if (tls_mask != 0 && (tls_mask & TLS_LD) == 0)
411e1bfb 13716 {
951fd09b
AM		 13717 tls_gdld_hi:
13718 if ((tls_mask & tls_gd) != 0)
13719 r_type = (((r_type - (R_PPC64_GOT_TLSGD16 & 3)) & 3)
13720 + R_PPC64_GOT_TPREL16_DS);
13721 else
411e1bfb 13722 {
4fe5ca5b 13723 rel->r_offset -= d_offset;
727ac201 13724 bfd_put_32 (output_bfd, NOP, contents + rel->r_offset);
951fd09b 13725 r_type = R_PPC64_NONE;
411e1bfb 13726 }
951fd09b 13727 rel->r_info = ELF64_R_INFO (r_symndx, r_type);
411e1bfb
AM		 13728 }
13729 break;
13730
951fd09b
AM		 13731 case R_PPC64_GOT_TLSGD16:
13732 case R_PPC64_GOT_TLSGD16_LO:
13733 tls_gd = TLS_TPRELGD;
13734 if (tls_mask != 0 && (tls_mask & TLS_GD) == 0)
102890f0 13735 goto tls_ldgd_opt;
951fd09b 13736 break;
411e1bfb 13737
951fd09b
AM		 13738 case R_PPC64_GOT_TLSLD16:
13739 case R_PPC64_GOT_TLSLD16_LO:
13740 if (tls_mask != 0 && (tls_mask & TLS_LD) == 0)
13741 {
3a71aa26 13742 unsigned int insn1, insn2, insn3;
102890f0
AM		 13743 bfd_vma offset;
13744
13745 tls_ldgd_opt:
727fc41e
AM		 13746 offset = (bfd_vma) -1;
13747 /* If not using the newer R_PPC64_TLSGD/LD to mark
13748 __tls_get_addr calls, we must trust that the call
13749 stays with its arg setup insns, ie. that the next
13750 reloc is the __tls_get_addr call associated with
13751 the current reloc. Edit both insns. */
13752 if (input_section->has_tls_get_addr_call
13753 && rel + 1 < relend
13754 && branch_reloc_hash_match (input_bfd, rel + 1,
13755 htab->tls_get_addr,
13756 htab->tls_get_addr_fd))
13757 offset = rel[1].r_offset;
b86ac8e3
AM		 13758 /* We read the low GOT_TLS (or TOC16) insn because we
13759 need to keep the destination reg. It may be
13760 something other than the usual r3, and moved to r3
13761 before the call by intervening code. */
13762 insn1 = bfd_get_32 (output_bfd,
13763 contents + rel->r_offset - d_offset);
102890f0 13764 if ((tls_mask & tls_gd) != 0)
411e1bfb 13765 {
102890f0 13766 /* IE */
b86ac8e3 13767 insn1 &= (0x1f << 21) | (0x1f << 16);
102890f0
AM		 13768 insn1 |= 58 << 26; /* ld */
13769 insn2 = 0x7c636a14; /* add 3,3,13 */
727fc41e 13770 if (offset != (bfd_vma) -1)
f58d5a2d 13771 rel[1].r_info = ELF64_R_INFO (STN_UNDEF, R_PPC64_NONE);
102890f0
AM		 13772 if ((tls_mask & TLS_EXPLICIT) == 0)
13773 r_type = (((r_type - (R_PPC64_GOT_TLSGD16 & 3)) & 3)
13774 + R_PPC64_GOT_TPREL16_DS);
411e1bfb 13775 else
102890f0
AM		 13776 r_type += R_PPC64_TOC16_DS - R_PPC64_TOC16;
13777 rel->r_info = ELF64_R_INFO (r_symndx, r_type);
13778 }
13779 else
13780 {
13781 /* LE */
b86ac8e3
AM		 13782 insn1 &= 0x1f << 21;
13783 insn1 |= 0x3c0d0000; /* addis r,13,0 */
102890f0
AM		 13784 insn2 = 0x38630000; /* addi 3,3,0 */
13785 if (tls_gd == 0)
951fd09b 13786 {
102890f0 13787 /* Was an LD reloc. */
1d483afe
AM		 13788 if (toc_symndx)
13789 sec = local_sections[toc_symndx];
13790 for (r_symndx = 0;
13791 r_symndx < symtab_hdr->sh_info;
13792 r_symndx++)
13793 if (local_sections[r_symndx] == sec)
13794 break;
13795 if (r_symndx >= symtab_hdr->sh_info)
cf35638d 13796 r_symndx = STN_UNDEF;
102890f0 13797 rel->r_addend = htab->elf.tls_sec->vma + DTP_OFFSET;
cf35638d 13798 if (r_symndx != STN_UNDEF)
1d483afe
AM		 13799 rel->r_addend -= (local_syms[r_symndx].st_value
13800 + sec->output_offset
13801 + sec->output_section->vma);
951fd09b 13802 }
102890f0 13803 else if (toc_symndx != 0)
3a71aa26
AM		 13804 {
13805 r_symndx = toc_symndx;
13806 rel->r_addend = toc_addend;
13807 }
102890f0
AM		 13808 r_type = R_PPC64_TPREL16_HA;
13809 rel->r_info = ELF64_R_INFO (r_symndx, r_type);
727fc41e
AM		 13810 if (offset != (bfd_vma) -1)
13811 {
13812 rel[1].r_info = ELF64_R_INFO (r_symndx,
13813 R_PPC64_TPREL16_LO);
13814 rel[1].r_offset = offset + d_offset;
13815 rel[1].r_addend = rel->r_addend;
13816 }
102890f0 13817 }
3a71aa26
AM		 13818 bfd_put_32 (output_bfd, insn1,
13819 contents + rel->r_offset - d_offset);
727fc41e
AM		 13820 if (offset != (bfd_vma) -1)
13821 {
13822 insn3 = bfd_get_32 (output_bfd,
13823 contents + offset + 4);
13824 if (insn3 == NOP
13825 || insn3 == CROR_151515 || insn3 == CROR_313131)
13826 {
13827 rel[1].r_offset += 4;
13828 bfd_put_32 (output_bfd, insn2, contents + offset + 4);
13829 insn2 = NOP;
13830 }
13831 bfd_put_32 (output_bfd, insn2, contents + offset);
13832 }
13833 if ((tls_mask & tls_gd) == 0
13834 && (tls_gd == 0 || toc_symndx != 0))
13835 {
13836 /* We changed the symbol. Start over in order
13837 to get h, sym, sec etc. right. */
c316a17c 13838 goto again;
727fc41e
AM		 13839 }
13840 }
13841 break;
13842
13843 case R_PPC64_TLSGD:
13844 if (tls_mask != 0 && (tls_mask & TLS_GD) == 0)
13845 {
13846 unsigned int insn2, insn3;
13847 bfd_vma offset = rel->r_offset;
13848
13849 if ((tls_mask & TLS_TPRELGD) != 0)
13850 {
13851 /* IE */
13852 r_type = R_PPC64_NONE;
13853 insn2 = 0x7c636a14; /* add 3,3,13 */
13854 }
13855 else
13856 {
13857 /* LE */
13858 if (toc_symndx != 0)
13859 {
13860 r_symndx = toc_symndx;
13861 rel->r_addend = toc_addend;
13862 }
13863 r_type = R_PPC64_TPREL16_LO;
13864 rel->r_offset = offset + d_offset;
13865 insn2 = 0x38630000; /* addi 3,3,0 */
13866 }
13867 rel->r_info = ELF64_R_INFO (r_symndx, r_type);
13868 /* Zap the reloc on the _tls_get_addr call too. */
13869 BFD_ASSERT (offset == rel[1].r_offset);
f58d5a2d 13870 rel[1].r_info = ELF64_R_INFO (STN_UNDEF, R_PPC64_NONE);
3a71aa26
AM		 13871 insn3 = bfd_get_32 (output_bfd,
13872 contents + offset + 4);
102890f0
AM		 13873 if (insn3 == NOP
13874 || insn3 == CROR_151515 || insn3 == CROR_313131)
13875 {
727fc41e 13876 rel->r_offset += 4;
3a71aa26
AM		 13877 bfd_put_32 (output_bfd, insn2, contents + offset + 4);
13878 insn2 = NOP;
102890f0 13879 }
102890f0 13880 bfd_put_32 (output_bfd, insn2, contents + offset);
727fc41e 13881 if ((tls_mask & TLS_TPRELGD) == 0 && toc_symndx != 0)
c316a17c 13882 goto again;
411e1bfb 13883 }
411e1bfb
AM		 13884 break;
13885
727fc41e
AM		 13886 case R_PPC64_TLSLD:
13887 if (tls_mask != 0 && (tls_mask & TLS_LD) == 0)
13888 {
13889 unsigned int insn2, insn3;
13890 bfd_vma offset = rel->r_offset;
13891
13892 if (toc_symndx)
13893 sec = local_sections[toc_symndx];
13894 for (r_symndx = 0;
13895 r_symndx < symtab_hdr->sh_info;
13896 r_symndx++)
13897 if (local_sections[r_symndx] == sec)
13898 break;
13899 if (r_symndx >= symtab_hdr->sh_info)
cf35638d 13900 r_symndx = STN_UNDEF;
727fc41e 13901 rel->r_addend = htab->elf.tls_sec->vma + DTP_OFFSET;
cf35638d 13902 if (r_symndx != STN_UNDEF)
727fc41e
AM		 13903 rel->r_addend -= (local_syms[r_symndx].st_value
13904 + sec->output_offset
13905 + sec->output_section->vma);
13906
13907 r_type = R_PPC64_TPREL16_LO;
13908 rel->r_info = ELF64_R_INFO (r_symndx, r_type);
13909 rel->r_offset = offset + d_offset;
13910 /* Zap the reloc on the _tls_get_addr call too. */
13911 BFD_ASSERT (offset == rel[1].r_offset);
f58d5a2d 13912 rel[1].r_info = ELF64_R_INFO (STN_UNDEF, R_PPC64_NONE);
727fc41e
AM		 13913 insn2 = 0x38630000; /* addi 3,3,0 */
13914 insn3 = bfd_get_32 (output_bfd,
13915 contents + offset + 4);
13916 if (insn3 == NOP
13917 || insn3 == CROR_151515 || insn3 == CROR_313131)
13918 {
13919 rel->r_offset += 4;
13920 bfd_put_32 (output_bfd, insn2, contents + offset + 4);
13921 insn2 = NOP;
13922 }
13923 bfd_put_32 (output_bfd, insn2, contents + offset);
c316a17c 13924 goto again;
727fc41e
AM		 13925 }
13926 break;
13927
411e1bfb 13928 case R_PPC64_DTPMOD64:
951fd09b
AM		 13929 if (rel + 1 < relend
13930 && rel[1].r_info == ELF64_R_INFO (r_symndx, R_PPC64_DTPREL64)
13931 && rel[1].r_offset == rel->r_offset + 8)
411e1bfb 13932 {
951fd09b
AM		 13933 if ((tls_mask & TLS_GD) == 0)
13934 {
13935 rel[1].r_info = ELF64_R_INFO (r_symndx, R_PPC64_NONE);
13936 if ((tls_mask & TLS_TPRELGD) != 0)
13937 r_type = R_PPC64_TPREL64;
13938 else
13939 {
4ce794b7 13940 bfd_put_64 (output_bfd, 1, contents + rel->r_offset);
951fd09b
AM		 13941 r_type = R_PPC64_NONE;
13942 }
13943 rel->r_info = ELF64_R_INFO (r_symndx, r_type);
13944 }
13945 }
13946 else
13947 {
13948 if ((tls_mask & TLS_LD) == 0)
411e1bfb 13949 {
4ce794b7 13950 bfd_put_64 (output_bfd, 1, contents + rel->r_offset);
411e1bfb 13951 r_type = R_PPC64_NONE;
951fd09b 13952 rel->r_info = ELF64_R_INFO (r_symndx, r_type);
411e1bfb 13953 }
411e1bfb
AM		 13954 }
13955 break;
13956
13957 case R_PPC64_TPREL64:
951fd09b 13958 if ((tls_mask & TLS_TPREL) == 0)
411e1bfb
AM		 13959 {
13960 r_type = R_PPC64_NONE;
13961 rel->r_info = ELF64_R_INFO (r_symndx, r_type);
13962 }
13963 break;
52a82034 13964
006589cf
AM		 13965 case R_PPC64_ENTRY:
13966 relocation = TOCstart + htab->sec_info[input_section->id].toc_off;
13967 if (!bfd_link_pic (info)
13968 && !info->traditional_format
13969 && relocation + 0x80008000 <= 0xffffffff)
13970 {
13971 unsigned int insn1, insn2;
13972
13973 insn1 = bfd_get_32 (input_bfd, contents + rel->r_offset);
13974 insn2 = bfd_get_32 (input_bfd, contents + rel->r_offset + 4);
13975 if ((insn1 & ~0xfffc) == LD_R2_0R12
13976 && insn2 == ADD_R2_R2_R12)
13977 {
13978 bfd_put_32 (output_bfd,
13979 LIS_R2 + PPC_HA (relocation),
13980 contents + rel->r_offset);
13981 bfd_put_32 (output_bfd,
13982 ADDI_R2_R2 + PPC_LO (relocation),
13983 contents + rel->r_offset + 4);
13984 }
13985 }
13986 else
13987 {
13988 relocation -= (rel->r_offset
13989 + input_section->output_offset
13990 + input_section->output_section->vma);
13991 if (relocation + 0x80008000 <= 0xffffffff)
13992 {
13993 unsigned int insn1, insn2;
13994
13995 insn1 = bfd_get_32 (input_bfd, contents + rel->r_offset);
13996 insn2 = bfd_get_32 (input_bfd, contents + rel->r_offset + 4);
13997 if ((insn1 & ~0xfffc) == LD_R2_0R12
13998 && insn2 == ADD_R2_R2_R12)
13999 {
14000 bfd_put_32 (output_bfd,
14001 ADDIS_R2_R12 + PPC_HA (relocation),
14002 contents + rel->r_offset);
14003 bfd_put_32 (output_bfd,
14004 ADDI_R2_R2 + PPC_LO (relocation),
14005 contents + rel->r_offset + 4);
14006 }
14007 }
14008 }
14009 break;
14010
52a82034
AM		 14011 case R_PPC64_REL16_HA:
14012 /* If we are generating a non-PIC executable, edit
14013 . 0: addis 2,12,.TOC.-0b@ha
14014 . addi 2,2,.TOC.-0b@l
14015 used by ELFv2 global entry points to set up r2, to
14016 . lis 2,.TOC.@ha
14017 . addi 2,2,.TOC.@l
14018 if .TOC. is in range. */
0e1862bb 14019 if (!bfd_link_pic (info)
810d4e75 14020 && !info->traditional_format
006589cf 14021 && !htab->opd_abi
4f038ee5 14022 && rel->r_addend == d_offset
52a82034
AM		 14023 && h != NULL && &h->elf == htab->elf.hgot
14024 && rel + 1 < relend
14025 && rel[1].r_info == ELF64_R_INFO (r_symndx, R_PPC64_REL16_LO)
14026 && rel[1].r_offset == rel->r_offset + 4
14027 && rel[1].r_addend == rel->r_addend + 4
14028 && relocation + 0x80008000 <= 0xffffffff)
14029 {
14030 unsigned int insn1, insn2;
14031 bfd_vma offset = rel->r_offset - d_offset;
14032 insn1 = bfd_get_32 (output_bfd, contents + offset);
14033 insn2 = bfd_get_32 (output_bfd, contents + offset + 4);
006589cf
AM		 14034 if ((insn1 & 0xffff0000) == ADDIS_R2_R12
14035 && (insn2 & 0xffff0000) == ADDI_R2_R2)
52a82034
AM		 14036 {
14037 r_type = R_PPC64_ADDR16_HA;
14038 rel->r_info = ELF64_R_INFO (r_symndx, r_type);
14039 rel->r_addend -= d_offset;
14040 rel[1].r_info = ELF64_R_INFO (r_symndx, R_PPC64_ADDR16_LO);
14041 rel[1].r_addend -= d_offset + 4;
006589cf 14042 bfd_put_32 (output_bfd, LIS_R2, contents + offset);
52a82034
AM		 14043 }
14044 }
14045 break;
411e1bfb
AM		 14046 }
14047
14048 /* Handle other relocations that tweak non-addend part of insn. */
86c76c7b 14049 insn = 0;
b25116a9
AM		 14050 max_br_offset = 1 << 25;
14051 addend = rel->r_addend;
bc30df16 14052 reloc_dest = DEST_NORMAL;
65f38f15 14053 switch (r_type)
5bd4f169
AM		 14054 {
14055 default:
65f38f15 14056 break;
5bd4f169 14057
3b421ab3
AM		 14058 case R_PPC64_TOCSAVE:
14059 if (relocation + addend == (rel->r_offset
14060 + input_section->output_offset
14061 + input_section->output_section->vma)
14062 && tocsave_find (htab, NO_INSERT,
14063 &local_syms, rel, input_bfd))
14064 {
14065 insn = bfd_get_32 (input_bfd, contents + rel->r_offset);
14066 if (insn == NOP
14067 || insn == CROR_151515 || insn == CROR_313131)
a078d95a
AM		 14068 bfd_put_32 (input_bfd,
14069 STD_R2_0R1 + STK_TOC (htab),
3b421ab3
AM		 14070 contents + rel->r_offset);
14071 }
14072 break;
14073
65f38f15
AM		 14074 /* Branch taken prediction relocations. */
14075 case R_PPC64_ADDR14_BRTAKEN:
14076 case R_PPC64_REL14_BRTAKEN:
cedb70c5 14077 insn = 0x01 << 21; /* 'y' or 't' bit, lowest bit of BO field. */
1a0670f3 14078 /* Fall through. */
65f38f15 14079
86c76c7b 14080 /* Branch not taken prediction relocations. */
65f38f15
AM		 14081 case R_PPC64_ADDR14_BRNTAKEN:
14082 case R_PPC64_REL14_BRNTAKEN:
411e1bfb
AM		 14083 insn |= bfd_get_32 (output_bfd,
14084 contents + rel->r_offset) & ~(0x01 << 21);
1a0670f3 14085 /* Fall through. */
86c76c7b 14086
b25116a9
AM		 14087 case R_PPC64_REL14:
14088 max_br_offset = 1 << 15;
1a0670f3 14089 /* Fall through. */
5bd4f169 14090
65f38f15 14091 case R_PPC64_REL24:
ad8e1ba5
AM		 14092 /* Calls to functions with a different TOC, such as calls to
14093 shared objects, need to alter the TOC pointer. This is
14094 done using a linkage stub. A REL24 branching to these
14095 linkage stubs needs to be followed by a nop, as the nop
14096 will be replaced with an instruction to restore the TOC
14097 base pointer. */
8387904d 14098 fdh = h;
b31867b6
AM		 14099 if (h != NULL
14100 && h->oh != NULL
14101 && h->oh->is_func_descriptor)
14102 fdh = ppc_follow_link (h->oh);
31c76678
DK		 14103 stub_entry = ppc_get_stub_entry (input_section, sec, fdh, &orig_rel,
14104 htab);
6abec6bc 14105 if (stub_entry != NULL
ad8e1ba5 14106 && (stub_entry->stub_type == ppc_stub_plt_call
794e51c0 14107 || stub_entry->stub_type == ppc_stub_plt_call_r2save
ad8e1ba5
AM		 14108 || stub_entry->stub_type == ppc_stub_plt_branch_r2off
14109 || stub_entry->stub_type == ppc_stub_long_branch_r2off))
41bd81ab 14110 {
b25116a9 14111 bfd_boolean can_plt_call = FALSE;
721956f4 14112
ba8ca3e7
AM		 14113 /* All of these stubs will modify r2, so there must be a
14114 branch and link followed by a nop. The nop is
14115 replaced by an insn to restore r2. */
eea6121a 14116 if (rel->r_offset + 8 <= input_section->size)
41bd81ab 14117 {
ba8ca3e7
AM		 14118 unsigned long br;
14119
14120 br = bfd_get_32 (input_bfd,
14121 contents + rel->r_offset);
14122 if ((br & 1) != 0)
41bd81ab 14123 {
ba8ca3e7
AM		 14124 unsigned long nop;
14125
14126 nop = bfd_get_32 (input_bfd,
14127 contents + rel->r_offset + 4);
14128 if (nop == NOP
14129 || nop == CROR_151515 || nop == CROR_313131)
a7f2871e 14130 {
ba8ca3e7
AM		 14131 if (h != NULL
14132 && (h == htab->tls_get_addr_fd
14133 || h == htab->tls_get_addr)
7c9cf415 14134 && htab->params->tls_get_addr_opt)
ba8ca3e7
AM		 14135 {
14136 /* Special stub used, leave nop alone. */
14137 }
14138 else
a078d95a
AM		 14139 bfd_put_32 (input_bfd,
14140 LD_R2_0R1 + STK_TOC (htab),
ba8ca3e7
AM		 14141 contents + rel->r_offset + 4);
14142 can_plt_call = TRUE;
a7f2871e 14143 }
41bd81ab 14144 }
5bd4f169 14145 }
721956f4 14146
ba8ca3e7 14147 if (!can_plt_call && h != NULL)
721956f4 14148 {
ba8ca3e7
AM		 14149 const char *name = h->elf.root.root.string;
14150
14151 if (*name == '.')
14152 ++name;
14153
14154 if (strncmp (name, "__libc_start_main", 17) == 0
14155 && (name[17] == 0 || name[17] == '@'))
6ab189d5 14156 {
ba8ca3e7
AM		 14157 /* Allow crt1 branch to go via a toc adjusting
14158 stub. Other calls that never return could do
14159 the same, if we could detect such. */
b25116a9 14160 can_plt_call = TRUE;
6ab189d5 14161 }
ba8ca3e7
AM		 14162 }
14163
14164 if (!can_plt_call)
14165 {
14166 /* g++ as of 20130507 emits self-calls without a
14167 following nop. This is arguably wrong since we
14168 have conflicting information. On the one hand a
14169 global symbol and on the other a local call
14170 sequence, but don't error for this special case.
14171 It isn't possible to cheaply verify we have
14172 exactly such a call. Allow all calls to the same
14173 section. */
14174 asection *code_sec = sec;
14175
14176 if (get_opd_info (sec) != NULL)
ad8e1ba5 14177 {
ba8ca3e7
AM		 14178 bfd_vma off = (relocation + addend
14179 - sec->output_section->vma
14180 - sec->output_offset);
bc30df16 14181
ba8ca3e7 14182 opd_entry_value (sec, off, &code_sec, NULL, FALSE);
ad8e1ba5 14183 }
ba8ca3e7
AM		 14184 if (code_sec == input_section)
14185 can_plt_call = TRUE;
14186 }
14187
14188 if (!can_plt_call)
14189 {
4805fc55
AM		 14190 if (stub_entry->stub_type == ppc_stub_plt_call
14191 || stub_entry->stub_type == ppc_stub_plt_call_r2save)
14192 info->callbacks->einfo
14193 (_("%P: %H: call to `%T' lacks nop, can't restore toc; "
14194 "recompile with -fPIC\n"),
14195 input_bfd, input_section, rel->r_offset, sym_name);
14196 else
14197 info->callbacks->einfo
14198 (_("%P: %H: call to `%T' lacks nop, can't restore toc; "
14199 "(-mcmodel=small toc adjust stub)\n"),
14200 input_bfd, input_section, rel->r_offset, sym_name);
ba8ca3e7
AM		 14201
14202 bfd_set_error (bfd_error_bad_value);
14203 ret = FALSE;
721956f4
AM		 14204 }
14205
b25116a9 14206 if (can_plt_call
794e51c0
AM		 14207 && (stub_entry->stub_type == ppc_stub_plt_call
14208 || stub_entry->stub_type == ppc_stub_plt_call_r2save))
b25116a9
AM		 14209 unresolved_reloc = FALSE;
14210 }
14211
6abec6bc
AM		 14212 if ((stub_entry == NULL
14213 || stub_entry->stub_type == ppc_stub_long_branch
14214 || stub_entry->stub_type == ppc_stub_plt_branch)
8387904d
AM		 14215 && get_opd_info (sec) != NULL)
14216 {
14217 /* The branch destination is the value of the opd entry. */
4cc603a5
AM		 14218 bfd_vma off = (relocation + addend
14219 - sec->output_section->vma
14220 - sec->output_offset);
aef36ac1 14221 bfd_vma dest = opd_entry_value (sec, off, NULL, NULL, FALSE);
8387904d
AM		 14222 if (dest != (bfd_vma) -1)
14223 {
14224 relocation = dest;
14225 addend = 0;
bc30df16 14226 reloc_dest = DEST_OPD;
8387904d
AM		 14227 }
14228 }
14229
b25116a9
AM		 14230 /* If the branch is out of reach we ought to have a long
14231 branch stub. */
14232 from = (rel->r_offset
14233 + input_section->output_offset
14234 + input_section->output_section->vma);
14235
6911b7dc
AM		 14236 relocation += PPC64_LOCAL_ENTRY_OFFSET (fdh
14237 ? fdh->elf.other
14238 : sym->st_other);
14239
6abec6bc
AM		 14240 if (stub_entry != NULL
14241 && (stub_entry->stub_type == ppc_stub_long_branch
14242 || stub_entry->stub_type == ppc_stub_plt_branch)
14243 && (r_type == R_PPC64_ADDR14_BRTAKEN
14244 || r_type == R_PPC64_ADDR14_BRNTAKEN
14245 || (relocation + addend - from + max_br_offset
14246 < 2 * max_br_offset)))
14247 /* Don't use the stub if this branch is in range. */
14248 stub_entry = NULL;
b25116a9
AM		 14249
14250 if (stub_entry != NULL)
14251 {
14252 /* Munge up the value and addend so that we call the stub
14253 rather than the procedure directly. */
a4b6fadd
AM		 14254 asection *stub_sec = stub_entry->group->stub_sec;
14255
14256 if (stub_entry->stub_type == ppc_stub_save_res)
14257 relocation += (stub_sec->output_offset
14258 + stub_sec->output_section->vma
14259 + stub_sec->size - htab->sfpr->size
14260 - htab->sfpr->output_offset
14261 - htab->sfpr->output_section->vma);
14262 else
14263 relocation = (stub_entry->stub_offset
14264 + stub_sec->output_offset
14265 + stub_sec->output_section->vma);
b25116a9 14266 addend = 0;
bc30df16 14267 reloc_dest = DEST_STUB;
3b421ab3 14268
794e51c0
AM		 14269 if ((stub_entry->stub_type == ppc_stub_plt_call
14270 || stub_entry->stub_type == ppc_stub_plt_call_r2save)
14271 && (ALWAYS_EMIT_R2SAVE
14272 || stub_entry->stub_type == ppc_stub_plt_call_r2save)
3b421ab3
AM		 14273 && rel + 1 < relend
14274 && rel[1].r_offset == rel->r_offset + 4
14275 && ELF64_R_TYPE (rel[1].r_info) == R_PPC64_TOCSAVE)
14276 relocation += 4;
b25116a9
AM		 14277 }
14278
14279 if (insn != 0)
14280 {
794e51c0 14281 if (is_isa_v2)
721956f4 14282 {
b25116a9
AM		 14283 /* Set 'a' bit. This is 0b00010 in BO field for branch
14284 on CR(BI) insns (BO == 001at or 011at), and 0b01000
14285 for branch on CTR insns (BO == 1a00t or 1a01t). */
14286 if ((insn & (0x14 << 21)) == (0x04 << 21))
14287 insn |= 0x02 << 21;
14288 else if ((insn & (0x14 << 21)) == (0x10 << 21))
14289 insn |= 0x08 << 21;
14290 else
14291 break;
14292 }
14293 else
14294 {
14295 /* Invert 'y' bit if not the default. */
4cc603a5 14296 if ((bfd_signed_vma) (relocation + addend - from) < 0)
b25116a9 14297 insn ^= 0x01 << 21;
721956f4 14298 }
b25116a9
AM		 14299
14300 bfd_put_32 (output_bfd, insn, contents + rel->r_offset);
5bd4f169 14301 }
e86ce104 14302
06da1e8e
AM		 14303 /* NOP out calls to undefined weak functions.
14304 We can thus call a weak function without first
14305 checking whether the function is defined. */
b25116a9 14306 else if (h != NULL
039b3fef 14307 && h->elf.root.type == bfd_link_hash_undefweak
766bc656 14308 && h->elf.dynindx == -1
b25116a9
AM		 14309 && r_type == R_PPC64_REL24
14310 && relocation == 0
4cc603a5 14311 && addend == 0)
e86ce104 14312 {
06da1e8e 14313 bfd_put_32 (output_bfd, NOP, contents + rel->r_offset);
c316a17c 14314 goto copy_reloc;
e86ce104 14315 }
65f38f15
AM		 14316 break;
14317 }
5bd4f169 14318
65f38f15 14319 /* Set `addend'. */
411e1bfb 14320 tls_type = 0;
65f38f15
AM		 14321 switch (r_type)
14322 {
14323 default:
25f53a85 14324 info->callbacks->einfo
bc30df16 14325 (_("%P: %B: unknown relocation type %d for `%T'\n"),
d003868e 14326 input_bfd, (int) r_type, sym_name);
5bd4f169 14327
65f38f15 14328 bfd_set_error (bfd_error_bad_value);
b34976b6 14329 ret = FALSE;
c316a17c 14330 goto copy_reloc;
5bd4f169 14331
65f38f15 14332 case R_PPC64_NONE:
411e1bfb 14333 case R_PPC64_TLS:
727fc41e
AM		 14334 case R_PPC64_TLSGD:
14335 case R_PPC64_TLSLD:
3b421ab3 14336 case R_PPC64_TOCSAVE:
04c9666a
AM		 14337 case R_PPC64_GNU_VTINHERIT:
14338 case R_PPC64_GNU_VTENTRY:
006589cf 14339 case R_PPC64_ENTRY:
c316a17c 14340 goto copy_reloc;
5bd4f169
AM		 14341
14342 /* GOT16 relocations. Like an ADDR16 using the symbol's
14343 address in the GOT as relocation value instead of the
411e1bfb 14344 symbol's value itself. Also, create a GOT entry for the
5bd4f169 14345 symbol and put the symbol value there. */
411e1bfb
AM		 14346 case R_PPC64_GOT_TLSGD16:
14347 case R_PPC64_GOT_TLSGD16_LO:
14348 case R_PPC64_GOT_TLSGD16_HI:
14349 case R_PPC64_GOT_TLSGD16_HA:
951fd09b 14350 tls_type = TLS_TLS | TLS_GD;
411e1bfb
AM		 14351 goto dogot;
14352
14353 case R_PPC64_GOT_TLSLD16:
14354 case R_PPC64_GOT_TLSLD16_LO:
14355 case R_PPC64_GOT_TLSLD16_HI:
14356 case R_PPC64_GOT_TLSLD16_HA:
951fd09b 14357 tls_type = TLS_TLS | TLS_LD;
411e1bfb
AM		 14358 goto dogot;
14359
14360 case R_PPC64_GOT_TPREL16_DS:
14361 case R_PPC64_GOT_TPREL16_LO_DS:
14362 case R_PPC64_GOT_TPREL16_HI:
14363 case R_PPC64_GOT_TPREL16_HA:
14364 tls_type = TLS_TLS | TLS_TPREL;
14365 goto dogot;
14366
14367 case R_PPC64_GOT_DTPREL16_DS:
14368 case R_PPC64_GOT_DTPREL16_LO_DS:
14369 case R_PPC64_GOT_DTPREL16_HI:
14370 case R_PPC64_GOT_DTPREL16_HA:
14371 tls_type = TLS_TLS | TLS_DTPREL;
14372 goto dogot;
14373
65f38f15
AM		 14374 case R_PPC64_GOT16:
14375 case R_PPC64_GOT16_LO:
14376 case R_PPC64_GOT16_HI:
14377 case R_PPC64_GOT16_HA:
14378 case R_PPC64_GOT16_DS:
14379 case R_PPC64_GOT16_LO_DS:
411e1bfb 14380 dogot:
5bd4f169
AM		 14381 {
14382 /* Relocation is to the entry for this symbol in the global
14383 offset table. */
e717da7e 14384 asection *got;
d881513a 14385 bfd_vma *offp;
5bd4f169 14386 bfd_vma off;
d881513a 14387 unsigned long indx = 0;
927be08e 14388 struct got_entry *ent;
65f38f15 14389
d881513a
AM		 14390 if (tls_type == (TLS_TLS | TLS_LD)
14391 && (h == NULL
f5385ebf 14392 || !h->elf.def_dynamic))
927be08e 14393 ent = ppc64_tlsld_got (input_bfd);
411e1bfb 14394 else
5bd4f169 14395 {
5bd4f169 14396
d881513a
AM		 14397 if (h != NULL)
14398 {
14399 bfd_boolean dyn = htab->elf.dynamic_sections_created;
0e1862bb 14400 if (!WILL_CALL_FINISH_DYNAMIC_SYMBOL (dyn, bfd_link_pic (info),
039b3fef 14401 &h->elf)
0e1862bb 14402 || (bfd_link_pic (info)
afe397ea 14403 && SYMBOL_REFERENCES_LOCAL (info, &h->elf)))
d881513a
AM		 14404 /* This is actually a static link, or it is a
14405 -Bsymbolic link and the symbol is defined
14406 locally, or the symbol was forced to be local
14407 because of a version file. */
14408 ;
14409 else
14410 {
14acf4dc 14411 BFD_ASSERT (h->elf.dynindx != -1);
039b3fef 14412 indx = h->elf.dynindx;
d881513a
AM		 14413 unresolved_reloc = FALSE;
14414 }
039b3fef 14415 ent = h->elf.got.glist;
d881513a 14416 }
411e1bfb 14417 else
5bd4f169 14418 {
d881513a
AM		 14419 if (local_got_ents == NULL)
14420 abort ();
14421 ent = local_got_ents[r_symndx];
5bd4f169 14422 }
d881513a
AM		 14423
14424 for (; ent != NULL; ent = ent->next)
31c76678 14425 if (ent->addend == orig_rel.r_addend
e717da7e 14426 && ent->owner == input_bfd
d881513a
AM		 14427 && ent->tls_type == tls_type)
14428 break;
5bd4f169 14429 }
411e1bfb 14430
927be08e
AM		 14431 if (ent == NULL)
14432 abort ();
14433 if (ent->is_indirect)
14434 ent = ent->got.ent;
14435 offp = &ent->got.offset;
14436 got = ppc64_elf_tdata (ent->owner)->got;
e717da7e
AM		 14437 if (got == NULL)
14438 abort ();
14439
411e1bfb
AM		 14440 /* The offset must always be a multiple of 8. We use the
14441 least significant bit to record whether we have already
14442 processed this entry. */
d881513a 14443 off = *offp;
411e1bfb
AM		 14444 if ((off & 1) != 0)
14445 off &= ~1;
5bd4f169
AM		 14446 else
14447 {
411e1bfb
AM		 14448 /* Generate relocs for the dynamic linker, except in
14449 the case of TLSLD where we'll use one entry per
14450 module. */
25f23106
AM		 14451 asection *relgot;
14452 bfd_boolean ifunc;
e717da7e 14453
d881513a 14454 *offp = off | 1;
25f23106
AM		 14455 relgot = NULL;
14456 ifunc = (h != NULL
14457 ? h->elf.type == STT_GNU_IFUNC
14458 : ELF_ST_TYPE (sym->st_info) == STT_GNU_IFUNC);
19e08130 14459 if (ifunc)
33e44f2e 14460 relgot = htab->elf.irelplt;
0e1862bb 14461 else if ((bfd_link_pic (info) || indx != 0)
19e08130
AM		 14462 && (h == NULL
14463 || (tls_type == (TLS_TLS | TLS_LD)
14464 && !h->elf.def_dynamic)
14465 || ELF_ST_VISIBILITY (h->elf.other) == STV_DEFAULT
14466 || h->elf.root.type != bfd_link_hash_undefweak))
14467 relgot = ppc64_elf_tdata (ent->owner)->relgot;
25f23106 14468 if (relgot != NULL)
5bd4f169 14469 {
e717da7e
AM		 14470 outrel.r_offset = (got->output_section->vma
14471 + got->output_offset
411e1bfb 14472 + off);
4cc603a5 14473 outrel.r_addend = addend;
d881513a 14474 if (tls_type & (TLS_LD | TLS_GD))
5bd4f169 14475 {
411e1bfb 14476 outrel.r_addend = 0;
e515b051 14477 outrel.r_info = ELF64_R_INFO (indx, R_PPC64_DTPMOD64);
d881513a
AM		 14478 if (tls_type == (TLS_TLS | TLS_GD))
14479 {
e717da7e
AM		 14480 loc = relgot->contents;
14481 loc += (relgot->reloc_count++
d881513a
AM		 14482 * sizeof (Elf64_External_Rela));
14483 bfd_elf64_swap_reloca_out (output_bfd,
14484 &outrel, loc);
e515b051 14485 outrel.r_offset += 8;
4cc603a5 14486 outrel.r_addend = addend;
d881513a
AM		 14487 outrel.r_info
14488 = ELF64_R_INFO (indx, R_PPC64_DTPREL64);
d881513a 14489 }
411e1bfb 14490 }
951fd09b 14491 else if (tls_type == (TLS_TLS | TLS_DTPREL))
411e1bfb 14492 outrel.r_info = ELF64_R_INFO (indx, R_PPC64_DTPREL64);
951fd09b 14493 else if (tls_type == (TLS_TLS | TLS_TPREL))
411e1bfb 14494 outrel.r_info = ELF64_R_INFO (indx, R_PPC64_TPREL64);
25f23106
AM		 14495 else if (indx != 0)
14496 outrel.r_info = ELF64_R_INFO (indx, R_PPC64_GLOB_DAT);
14497 else
81407a69 14498 {
25f23106
AM		 14499 if (ifunc)
14500 outrel.r_info = ELF64_R_INFO (0, R_PPC64_IRELATIVE);
14501 else
14502 outrel.r_info = ELF64_R_INFO (0, R_PPC64_RELATIVE);
81407a69
AM		 14503
14504 /* Write the .got section contents for the sake
14505 of prelink. */
e717da7e 14506 loc = got->contents + off;
23fbd6fa
JJ		 14507 bfd_put_64 (output_bfd, outrel.r_addend + relocation,
14508 loc);
81407a69 14509 }
81407a69
AM		 14510
14511 if (indx == 0 && tls_type != (TLS_TLS | TLS_LD))
e515b051
AM		 14512 {
14513 outrel.r_addend += relocation;
14514 if (tls_type & (TLS_GD | TLS_DTPREL | TLS_TPREL))
989f9879
AM		 14515 {
14516 if (htab->elf.tls_sec == NULL)
14517 outrel.r_addend = 0;
14518 else
14519 outrel.r_addend -= htab->elf.tls_sec->vma;
14520 }
e515b051 14521 }
e717da7e
AM		 14522 loc = relgot->contents;
14523 loc += (relgot->reloc_count++
411e1bfb
AM		 14524 * sizeof (Elf64_External_Rela));
14525 bfd_elf64_swap_reloca_out (output_bfd, &outrel, loc);
14526 }
14527
ad8e1ba5 14528 /* Init the .got section contents here if we're not
81407a69 14529 emitting a reloc. */
d881513a 14530 else
411e1bfb 14531 {
4cc603a5 14532 relocation += addend;
7b609f53
AM		 14533 if (tls_type == (TLS_TLS | TLS_LD))
14534 relocation = 1;
14535 else if (tls_type != 0)
411e1bfb 14536 {
989f9879
AM		 14537 if (htab->elf.tls_sec == NULL)
14538 relocation = 0;
14539 else
14540 {
14541 relocation -= htab->elf.tls_sec->vma + DTP_OFFSET;
14542 if (tls_type == (TLS_TLS | TLS_TPREL))
14543 relocation += DTP_OFFSET - TP_OFFSET;
14544 }
5bd4f169 14545
7b609f53
AM		 14546 if (tls_type == (TLS_TLS | TLS_GD))
14547 {
14548 bfd_put_64 (output_bfd, relocation,
e717da7e 14549 got->contents + off + 8);
7b609f53
AM		 14550 relocation = 1;
14551 }
411e1bfb 14552 }
7b609f53 14553
411e1bfb 14554 bfd_put_64 (output_bfd, relocation,
e717da7e 14555 got->contents + off);
5bd4f169
AM		 14556 }
14557 }
14558
65f38f15
AM		 14559 if (off >= (bfd_vma) -2)
14560 abort ();
14561
bf102f86 14562 relocation = got->output_section->vma + got->output_offset + off;
6f20ed8a 14563 addend = -(TOCstart + htab->sec_info[input_section->id].toc_off);
5bd4f169 14564 }
65f38f15
AM		 14565 break;
14566
14567 case R_PPC64_PLT16_HA:
14568 case R_PPC64_PLT16_HI:
14569 case R_PPC64_PLT16_LO:
14570 case R_PPC64_PLT32:
14571 case R_PPC64_PLT64:
14572 /* Relocation is to the entry for this symbol in the
14573 procedure linkage table. */
cbf95972
AM		 14574 {
14575 struct plt_entry **plt_list = NULL;
14576 if (h != NULL)
14577 plt_list = &h->elf.plt.plist;
14578 else if (local_got_ents != NULL)
14579 {
14580 struct plt_entry **local_plt = (struct plt_entry **)
14581 (local_got_ents + symtab_hdr->sh_info);
14582 unsigned char *local_got_tls_masks = (unsigned char *)
14583 (local_plt + symtab_hdr->sh_info);
14584 if ((local_got_tls_masks[r_symndx] & PLT_IFUNC) != 0)
14585 plt_list = local_plt + r_symndx;
14586 }
14587 if (plt_list)
14588 {
14589 struct plt_entry *ent;
65f38f15 14590
cbf95972
AM		 14591 for (ent = *plt_list; ent != NULL; ent = ent->next)
14592 if (ent->plt.offset != (bfd_vma) -1
14593 && ent->addend == orig_rel.r_addend)
14594 {
14595 asection *plt;
14596
14597 plt = htab->elf.splt;
14598 if (!htab->elf.dynamic_sections_created
14599 || h == NULL
14600 || h->elf.dynindx == -1)
14601 plt = htab->elf.iplt;
14602 relocation = (plt->output_section->vma
14603 + plt->output_offset
14604 + ent->plt.offset);
14605 addend = 0;
14606 unresolved_reloc = FALSE;
14607 break;
14608 }
14609 }
14610 }
65f38f15 14611 break;
5bd4f169 14612
0b13192e
AM		 14613 case R_PPC64_TOC:
14614 /* Relocation value is TOC base. */
14615 relocation = TOCstart;
cf35638d 14616 if (r_symndx == STN_UNDEF)
6f20ed8a 14617 relocation += htab->sec_info[input_section->id].toc_off;
8517fae7
AM		 14618 else if (unresolved_reloc)
14619 ;
6f20ed8a
AM		 14620 else if (sec != NULL && sec->id < htab->sec_info_arr_size)
14621 relocation += htab->sec_info[sec->id].toc_off;
0b13192e
AM		 14622 else
14623 unresolved_reloc = TRUE;
ab96bf03 14624 goto dodyn;
0b13192e 14625
5bd4f169
AM		 14626 /* TOC16 relocs. We want the offset relative to the TOC base,
14627 which is the address of the start of the TOC plus 0x8000.
14628 The TOC consists of sections .got, .toc, .tocbss, and .plt,
14629 in this order. */
65f38f15
AM		 14630 case R_PPC64_TOC16:
14631 case R_PPC64_TOC16_LO:
14632 case R_PPC64_TOC16_HI:
14633 case R_PPC64_TOC16_DS:
14634 case R_PPC64_TOC16_LO_DS:
14635 case R_PPC64_TOC16_HA:
6f20ed8a 14636 addend -= TOCstart + htab->sec_info[input_section->id].toc_off;
5bd4f169
AM		 14637 break;
14638
14639 /* Relocate against the beginning of the section. */
65f38f15
AM		 14640 case R_PPC64_SECTOFF:
14641 case R_PPC64_SECTOFF_LO:
14642 case R_PPC64_SECTOFF_HI:
14643 case R_PPC64_SECTOFF_DS:
14644 case R_PPC64_SECTOFF_LO_DS:
14645 case R_PPC64_SECTOFF_HA:
4ce794b7 14646 if (sec != NULL)
65f38f15 14647 addend -= sec->output_section->vma;
5bd4f169
AM		 14648 break;
14649
25f23106
AM		 14650 case R_PPC64_REL16:
14651 case R_PPC64_REL16_LO:
14652 case R_PPC64_REL16_HI:
14653 case R_PPC64_REL16_HA:
a680de9a 14654 case R_PPC64_REL16DX_HA:
25f23106
AM		 14655 break;
14656
721956f4
AM		 14657 case R_PPC64_REL14:
14658 case R_PPC64_REL14_BRNTAKEN:
14659 case R_PPC64_REL14_BRTAKEN:
5d1634d7
AM		 14660 case R_PPC64_REL24:
14661 break;
14662
411e1bfb
AM		 14663 case R_PPC64_TPREL16:
14664 case R_PPC64_TPREL16_LO:
14665 case R_PPC64_TPREL16_HI:
14666 case R_PPC64_TPREL16_HA:
14667 case R_PPC64_TPREL16_DS:
14668 case R_PPC64_TPREL16_LO_DS:
f9c6b907
AM		 14669 case R_PPC64_TPREL16_HIGH:
14670 case R_PPC64_TPREL16_HIGHA:
411e1bfb
AM		 14671 case R_PPC64_TPREL16_HIGHER:
14672 case R_PPC64_TPREL16_HIGHERA:
14673 case R_PPC64_TPREL16_HIGHEST:
14674 case R_PPC64_TPREL16_HIGHESTA:
766bc656
AM		 14675 if (h != NULL
14676 && h->elf.root.type == bfd_link_hash_undefweak
14677 && h->elf.dynindx == -1)
14678 {
14679 /* Make this relocation against an undefined weak symbol
14680 resolve to zero. This is really just a tweak, since
14681 code using weak externs ought to check that they are
14682 defined before using them. */
14683 bfd_byte *p = contents + rel->r_offset - d_offset;
14684
14685 insn = bfd_get_32 (output_bfd, p);
14686 insn = _bfd_elf_ppc_at_tprel_transform (insn, 13);
14687 if (insn != 0)
14688 bfd_put_32 (output_bfd, insn, p);
14689 break;
14690 }
989f9879
AM		 14691 if (htab->elf.tls_sec != NULL)
14692 addend -= htab->elf.tls_sec->vma + TP_OFFSET;
0e1862bb 14693 if (bfd_link_pic (info))
411e1bfb
AM		 14694 /* The TPREL16 relocs shouldn't really be used in shared
14695 libs as they will result in DT_TEXTREL being set, but
14696 support them anyway. */
14697 goto dodyn;
14698 break;
14699
14700 case R_PPC64_DTPREL16:
14701 case R_PPC64_DTPREL16_LO:
14702 case R_PPC64_DTPREL16_HI:
14703 case R_PPC64_DTPREL16_HA:
14704 case R_PPC64_DTPREL16_DS:
14705 case R_PPC64_DTPREL16_LO_DS:
f9c6b907
AM		 14706 case R_PPC64_DTPREL16_HIGH:
14707 case R_PPC64_DTPREL16_HIGHA:
411e1bfb
AM		 14708 case R_PPC64_DTPREL16_HIGHER:
14709 case R_PPC64_DTPREL16_HIGHERA:
14710 case R_PPC64_DTPREL16_HIGHEST:
14711 case R_PPC64_DTPREL16_HIGHESTA:
989f9879
AM		 14712 if (htab->elf.tls_sec != NULL)
14713 addend -= htab->elf.tls_sec->vma + DTP_OFFSET;
411e1bfb
AM		 14714 break;
14715
45965137
AM		 14716 case R_PPC64_ADDR64_LOCAL:
14717 addend += PPC64_LOCAL_ENTRY_OFFSET (h != NULL
14718 ? h->elf.other
14719 : sym->st_other);
14720 break;
14721
e515b051
AM		 14722 case R_PPC64_DTPMOD64:
14723 relocation = 1;
14724 addend = 0;
14725 goto dodyn;
14726
411e1bfb 14727 case R_PPC64_TPREL64:
989f9879
AM		 14728 if (htab->elf.tls_sec != NULL)
14729 addend -= htab->elf.tls_sec->vma + TP_OFFSET;
411e1bfb
AM		 14730 goto dodyn;
14731
14732 case R_PPC64_DTPREL64:
989f9879
AM		 14733 if (htab->elf.tls_sec != NULL)
14734 addend -= htab->elf.tls_sec->vma + DTP_OFFSET;
1a0670f3 14735 /* Fall through. */
411e1bfb 14736
65f38f15
AM		 14737 /* Relocations that may need to be propagated if this is a
14738 dynamic object. */
04c9666a 14739 case R_PPC64_REL30:
65f38f15
AM		 14740 case R_PPC64_REL32:
14741 case R_PPC64_REL64:
14742 case R_PPC64_ADDR14:
14743 case R_PPC64_ADDR14_BRNTAKEN:
14744 case R_PPC64_ADDR14_BRTAKEN:
14745 case R_PPC64_ADDR16:
14746 case R_PPC64_ADDR16_DS:
14747 case R_PPC64_ADDR16_HA:
14748 case R_PPC64_ADDR16_HI:
f9c6b907
AM		 14749 case R_PPC64_ADDR16_HIGH:
14750 case R_PPC64_ADDR16_HIGHA:
65f38f15
AM		 14751 case R_PPC64_ADDR16_HIGHER:
14752 case R_PPC64_ADDR16_HIGHERA:
14753 case R_PPC64_ADDR16_HIGHEST:
14754 case R_PPC64_ADDR16_HIGHESTA:
14755 case R_PPC64_ADDR16_LO:
14756 case R_PPC64_ADDR16_LO_DS:
14757 case R_PPC64_ADDR24:
65f38f15
AM		 14758 case R_PPC64_ADDR32:
14759 case R_PPC64_ADDR64:
14760 case R_PPC64_UADDR16:
14761 case R_PPC64_UADDR32:
14762 case R_PPC64_UADDR64:
411e1bfb 14763 dodyn:
5d1634d7 14764 if ((input_section->flags & SEC_ALLOC) == 0)
ec338859
AM		 14765 break;
14766
41bd81ab
AM		 14767 if (NO_OPD_RELOCS && is_opd)
14768 break;
14769
8a9e8e72
AM		 14770 if (bfd_link_pic (info)
14771 ? ((h != NULL && pc_dynrelocs (h))
14772 || must_be_dyn_reloc (info, r_type))
14773 : (h != NULL
14774 ? h->dyn_relocs != NULL
d311bc8b 14775 : ELF_ST_TYPE (sym->st_info) == STT_GNU_IFUNC))
65f38f15 14776 {
b34976b6 14777 bfd_boolean skip, relocate;
65f38f15 14778 asection *sreloc;
1cf1f670 14779 bfd_vma out_off;
65f38f15
AM		 14780
14781 /* When generating a dynamic object, these relocations
14782 are copied into the output file to be resolved at run
14783 time. */
14784
b34976b6
AM		 14785 skip = FALSE;
14786 relocate = FALSE;
65f38f15 14787
1cf1f670
AM		 14788 out_off = _bfd_elf_section_offset (output_bfd, info,
14789 input_section, rel->r_offset);
14790 if (out_off == (bfd_vma) -1)
b34976b6 14791 skip = TRUE;
1cf1f670 14792 else if (out_off == (bfd_vma) -2)
b34976b6 14793 skip = TRUE, relocate = TRUE;
1cf1f670
AM		 14794 out_off += (input_section->output_section->vma
14795 + input_section->output_offset);
14796 outrel.r_offset = out_off;
411e1bfb 14797 outrel.r_addend = rel->r_addend;
65f38f15 14798
1cf1f670
AM		 14799 /* Optimize unaligned reloc use. */
14800 if ((r_type == R_PPC64_ADDR64 && (out_off & 7) != 0)
14801 || (r_type == R_PPC64_UADDR64 && (out_off & 7) == 0))
14802 r_type ^= R_PPC64_ADDR64 ^ R_PPC64_UADDR64;
14803 else if ((r_type == R_PPC64_ADDR32 && (out_off & 3) != 0)
14804 || (r_type == R_PPC64_UADDR32 && (out_off & 3) == 0))
14805 r_type ^= R_PPC64_ADDR32 ^ R_PPC64_UADDR32;
14806 else if ((r_type == R_PPC64_ADDR16 && (out_off & 1) != 0)
14807 || (r_type == R_PPC64_UADDR16 && (out_off & 1) == 0))
14808 r_type ^= R_PPC64_ADDR16 ^ R_PPC64_UADDR16;
14809
65f38f15 14810 if (skip)
0bb2d96a 14811 memset (&outrel, 0, sizeof outrel);
afe397ea 14812 else if (!SYMBOL_REFERENCES_LOCAL (info, &h->elf)
0b13192e
AM		 14813 && !is_opd
14814 && r_type != R_PPC64_TOC)
14acf4dc
MR		 14815 {
14816 BFD_ASSERT (h->elf.dynindx != -1);
14817 outrel.r_info = ELF64_R_INFO (h->elf.dynindx, r_type);
14818 }
65f38f15
AM		 14819 else
14820 {
41bd81ab
AM		 14821 /* This symbol is local, or marked to become local,
14822 or this is an opd section reloc which must point
14823 at a local function. */
65f38f15 14824 outrel.r_addend += relocation;
e86ce104 14825 if (r_type == R_PPC64_ADDR64 || r_type == R_PPC64_TOC)
65f38f15 14826 {
3fad3c7c 14827 if (is_opd && h != NULL)
afbe61cf
AM		 14828 {
14829 /* Lie about opd entries. This case occurs
14830 when building shared libraries and we
14831 reference a function in another shared
3fad3c7c
AM		 14832 lib. The same thing happens for a weak
14833 definition in an application that's
14834 overridden by a strong definition in a
14835 shared lib. (I believe this is a generic
14836 bug in binutils handling of weak syms.)
14837 In these cases we won't use the opd
1e2f5b6e 14838 entry in this lib. */
b34976b6 14839 unresolved_reloc = FALSE;
afbe61cf 14840 }
25f23106
AM		 14841 if (!is_opd
14842 && r_type == R_PPC64_ADDR64
14843 && (h != NULL
14844 ? h->elf.type == STT_GNU_IFUNC
14845 : ELF_ST_TYPE (sym->st_info) == STT_GNU_IFUNC))
14846 outrel.r_info = ELF64_R_INFO (0, R_PPC64_IRELATIVE);
14847 else
14848 {
14849 outrel.r_info = ELF64_R_INFO (0, R_PPC64_RELATIVE);
81407a69 14850
25f23106
AM		 14851 /* We need to relocate .opd contents for ld.so.
14852 Prelink also wants simple and consistent rules
14853 for relocs. This make all RELATIVE relocs have
14854 *r_offset equal to r_addend. */
14855 relocate = TRUE;
14856 }
65f38f15
AM		 14857 }
14858 else
14859 {
14860 long indx = 0;
14861
25f23106
AM		 14862 if (h != NULL
14863 ? h->elf.type == STT_GNU_IFUNC
14864 : ELF_ST_TYPE (sym->st_info) == STT_GNU_IFUNC)
14865 {
25f53a85 14866 info->callbacks->einfo
bc30df16
AM		 14867 (_("%P: %H: %s for indirect "
14868 "function `%T' unsupported\n"),
25f53a85 14869 input_bfd, input_section, rel->r_offset,
25f23106
AM		 14870 ppc64_elf_howto_table[r_type]->name,
14871 sym_name);
14872 ret = FALSE;
14873 }
cf35638d 14874 else if (r_symndx == STN_UNDEF || bfd_is_abs_section (sec))
65f38f15
AM		 14875 ;
14876 else if (sec == NULL || sec->owner == NULL)
14877 {
14878 bfd_set_error (bfd_error_bad_value);
b34976b6 14879 return FALSE;
65f38f15
AM		 14880 }
14881 else
14882 {
14883 asection *osec;
14884
14885 osec = sec->output_section;
14886 indx = elf_section_data (osec)->dynindx;
14887
74541ad4
AM		 14888 if (indx == 0)
14889 {
14890 if ((osec->flags & SEC_READONLY) == 0
14891 && htab->elf.data_index_section != NULL)
14892 osec = htab->elf.data_index_section;
14893 else
14894 osec = htab->elf.text_index_section;
14895 indx = elf_section_data (osec)->dynindx;
14896 }
14897 BFD_ASSERT (indx != 0);
14898
65f38f15
AM		 14899 /* We are turning this relocation into one
14900 against a section symbol, so subtract out
14901 the output section's address but not the
14902 offset of the input section in the output
14903 section. */
14904 outrel.r_addend -= osec->vma;
14905 }
14906
14907 outrel.r_info = ELF64_R_INFO (indx, r_type);
14908 }
14909 }
14910
14911 sreloc = elf_section_data (input_section)->sreloc;
19e08130
AM		 14912 if (h != NULL
14913 ? h->elf.type == STT_GNU_IFUNC
14914 : ELF_ST_TYPE (sym->st_info) == STT_GNU_IFUNC)
33e44f2e 14915 sreloc = htab->elf.irelplt;
65f38f15
AM		 14916 if (sreloc == NULL)
14917 abort ();
14918
dfbb6ac9
AM		 14919 if (sreloc->reloc_count * sizeof (Elf64_External_Rela)
14920 >= sreloc->size)
14921 abort ();
947216bf
AM		 14922 loc = sreloc->contents;
14923 loc += sreloc->reloc_count++ * sizeof (Elf64_External_Rela);
65f38f15
AM		 14924 bfd_elf64_swap_reloca_out (output_bfd, &outrel, loc);
14925
14926 /* If this reloc is against an external symbol, it will
14927 be computed at runtime, so there's no need to do
81407a69
AM		 14928 anything now. However, for the sake of prelink ensure
14929 that the section contents are a known value. */
65f38f15 14930 if (! relocate)
81407a69
AM		 14931 {
14932 unresolved_reloc = FALSE;
14933 /* The value chosen here is quite arbitrary as ld.so
14934 ignores section contents except for the special
14935 case of .opd where the contents might be accessed
14936 before relocation. Choose zero, as that won't
14937 cause reloc overflow. */
14938 relocation = 0;
14939 addend = 0;
14940 /* Use *r_offset == r_addend for R_PPC64_ADDR64 relocs
14941 to improve backward compatibility with older
14942 versions of ld. */
14943 if (r_type == R_PPC64_ADDR64)
14944 addend = outrel.r_addend;
14945 /* Adjust pc_relative relocs to have zero in *r_offset. */
4ce794b7 14946 else if (ppc64_elf_howto_table[r_type]->pc_relative)
000732f7
AM		 14947 addend = (input_section->output_section->vma
14948 + input_section->output_offset
14949 + rel->r_offset);
81407a69 14950 }
65f38f15 14951 }
5bd4f169
AM		 14952 break;
14953
65f38f15
AM		 14954 case R_PPC64_COPY:
14955 case R_PPC64_GLOB_DAT:
14956 case R_PPC64_JMP_SLOT:
25f23106 14957 case R_PPC64_JMP_IREL:
65f38f15
AM		 14958 case R_PPC64_RELATIVE:
14959 /* We shouldn't ever see these dynamic relocs in relocatable
14960 files. */
ae9a127f 14961 /* Fall through. */
65f38f15
AM		 14962
14963 case R_PPC64_PLTGOT16:
14964 case R_PPC64_PLTGOT16_DS:
14965 case R_PPC64_PLTGOT16_HA:
14966 case R_PPC64_PLTGOT16_HI:
14967 case R_PPC64_PLTGOT16_LO:
14968 case R_PPC64_PLTGOT16_LO_DS:
14969 case R_PPC64_PLTREL32:
14970 case R_PPC64_PLTREL64:
14971 /* These ones haven't been implemented yet. */
14972
25f53a85 14973 info->callbacks->einfo
bc30df16 14974 (_("%P: %B: %s is not supported for `%T'\n"),
d003868e 14975 input_bfd,
4ce794b7 14976 ppc64_elf_howto_table[r_type]->name, sym_name);
5bd4f169
AM		 14977
14978 bfd_set_error (bfd_error_invalid_operation);
b34976b6 14979 ret = FALSE;
c316a17c 14980 goto copy_reloc;
65f38f15 14981 }
5bd4f169 14982
67f0cbdb
AM		 14983 /* Multi-instruction sequences that access the TOC can be
14984 optimized, eg. addis ra,r2,0; addi rb,ra,x;
14985 to nop; addi rb,r2,x; */
14986 switch (r_type)
14987 {
14988 default:
14989 break;
14990
14991 case R_PPC64_GOT_TLSLD16_HI:
14992 case R_PPC64_GOT_TLSGD16_HI:
14993 case R_PPC64_GOT_TPREL16_HI:
14994 case R_PPC64_GOT_DTPREL16_HI:
14995 case R_PPC64_GOT16_HI:
14996 case R_PPC64_TOC16_HI:
14997 /* These relocs would only be useful if building up an
14998 offset to later add to r2, perhaps in an indexed
14999 addressing mode instruction. Don't try to optimize.
15000 Unfortunately, the possibility of someone building up an
15001 offset like this or even with the HA relocs, means that
15002 we need to check the high insn when optimizing the low
15003 insn. */
15004 break;
15005
15006 case R_PPC64_GOT_TLSLD16_HA:
15007 case R_PPC64_GOT_TLSGD16_HA:
15008 case R_PPC64_GOT_TPREL16_HA:
15009 case R_PPC64_GOT_DTPREL16_HA:
15010 case R_PPC64_GOT16_HA:
15011 case R_PPC64_TOC16_HA:
98528052 15012 if (htab->do_toc_opt && relocation + addend + 0x8000 < 0x10000
560c8763 15013 && !ppc64_elf_tdata (input_bfd)->unexpected_toc_insn)
98528052
AM		 15014 {
15015 bfd_byte *p = contents + (rel->r_offset & ~3);
15016 bfd_put_32 (input_bfd, NOP, p);
15017 }
67f0cbdb
AM		 15018 break;
15019
15020 case R_PPC64_GOT_TLSLD16_LO:
15021 case R_PPC64_GOT_TLSGD16_LO:
15022 case R_PPC64_GOT_TPREL16_LO_DS:
15023 case R_PPC64_GOT_DTPREL16_LO_DS:
15024 case R_PPC64_GOT16_LO:
15025 case R_PPC64_GOT16_LO_DS:
15026 case R_PPC64_TOC16_LO:
15027 case R_PPC64_TOC16_LO_DS:
98528052 15028 if (htab->do_toc_opt && relocation + addend + 0x8000 < 0x10000
560c8763 15029 && !ppc64_elf_tdata (input_bfd)->unexpected_toc_insn)
67f0cbdb
AM		 15030 {
15031 bfd_byte *p = contents + (rel->r_offset & ~3);
15032 insn = bfd_get_32 (input_bfd, p);
560c8763
AM		 15033 if ((insn & (0x3f << 26)) == 12u << 26 /* addic */)
15034 {
15035 /* Transform addic to addi when we change reg. */
15036 insn &= ~((0x3f << 26) | (0x1f << 16));
15037 insn |= (14u << 26) | (2 << 16);
15038 }
15039 else
67f0cbdb 15040 {
98528052
AM		 15041 insn &= ~(0x1f << 16);
15042 insn |= 2 << 16;
67f0cbdb 15043 }
560c8763 15044 bfd_put_32 (input_bfd, insn, p);
67f0cbdb
AM		 15045 }
15046 break;
15047 }
15048
65f38f15 15049 /* Do any further special processing. */
b80eed39 15050 howto = ppc64_elf_howto_table[(int) r_type];
65f38f15
AM		 15051 switch (r_type)
15052 {
15053 default:
15054 break;
15055
25f23106 15056 case R_PPC64_REL16_HA:
a680de9a 15057 case R_PPC64_REL16DX_HA:
f9c6b907
AM		 15058 case R_PPC64_ADDR16_HA:
15059 case R_PPC64_ADDR16_HIGHA:
65f38f15
AM		 15060 case R_PPC64_ADDR16_HIGHERA:
15061 case R_PPC64_ADDR16_HIGHESTA:
65f38f15
AM		 15062 case R_PPC64_TOC16_HA:
15063 case R_PPC64_SECTOFF_HA:
411e1bfb 15064 case R_PPC64_TPREL16_HA:
f9c6b907 15065 case R_PPC64_TPREL16_HIGHA:
411e1bfb 15066 case R_PPC64_TPREL16_HIGHERA:
411e1bfb 15067 case R_PPC64_TPREL16_HIGHESTA:
f9c6b907
AM		 15068 case R_PPC64_DTPREL16_HA:
15069 case R_PPC64_DTPREL16_HIGHA:
411e1bfb 15070 case R_PPC64_DTPREL16_HIGHERA:
411e1bfb 15071 case R_PPC64_DTPREL16_HIGHESTA:
65f38f15
AM		 15072 /* It's just possible that this symbol is a weak symbol
15073 that's not actually defined anywhere. In that case,
15074 'sec' would be NULL, and we should leave the symbol
15075 alone (it will be set to zero elsewhere in the link). */
5c5f6e17
AM		 15076 if (sec == NULL)
15077 break;
1a0670f3 15078 /* Fall through. */
5c5f6e17
AM		 15079
15080 case R_PPC64_GOT16_HA:
15081 case R_PPC64_PLTGOT16_HA:
15082 case R_PPC64_PLT16_HA:
15083 case R_PPC64_GOT_TLSGD16_HA:
15084 case R_PPC64_GOT_TLSLD16_HA:
15085 case R_PPC64_GOT_TPREL16_HA:
15086 case R_PPC64_GOT_DTPREL16_HA:
15087 /* Add 0x10000 if sign bit in 0:15 is set.
15088 Bits 0:15 are not used. */
15089 addend += 0x8000;
65f38f15
AM		 15090 break;
15091
15092 case R_PPC64_ADDR16_DS:
15093 case R_PPC64_ADDR16_LO_DS:
15094 case R_PPC64_GOT16_DS:
15095 case R_PPC64_GOT16_LO_DS:
15096 case R_PPC64_PLT16_LO_DS:
15097 case R_PPC64_SECTOFF_DS:
15098 case R_PPC64_SECTOFF_LO_DS:
15099 case R_PPC64_TOC16_DS:
15100 case R_PPC64_TOC16_LO_DS:
15101 case R_PPC64_PLTGOT16_DS:
15102 case R_PPC64_PLTGOT16_LO_DS:
411e1bfb
AM		 15103 case R_PPC64_GOT_TPREL16_DS:
15104 case R_PPC64_GOT_TPREL16_LO_DS:
15105 case R_PPC64_GOT_DTPREL16_DS:
15106 case R_PPC64_GOT_DTPREL16_LO_DS:
15107 case R_PPC64_TPREL16_DS:
15108 case R_PPC64_TPREL16_LO_DS:
15109 case R_PPC64_DTPREL16_DS:
15110 case R_PPC64_DTPREL16_LO_DS:
adadcc0c
AM		 15111 insn = bfd_get_32 (input_bfd, contents + (rel->r_offset & ~3));
15112 mask = 3;
a680de9a
PB		 15113 /* If this reloc is against an lq, lxv, or stxv insn, then
15114 the value must be a multiple of 16. This is somewhat of
15115 a hack, but the "correct" way to do this by defining _DQ
15116 forms of all the _DS relocs bloats all reloc switches in
15117 this file. It doesn't make much sense to use these
15118 relocs in data, so testing the insn should be safe. */
15119 if ((insn & (0x3f << 26)) == (56u << 26)
15120 || ((insn & (0x3f << 26)) == (61u << 26) && (insn & 3) == 1))
adadcc0c 15121 mask = 15;
a680de9a
PB		 15122 relocation += addend;
15123 addend = insn & (mask ^ 3);
15124 if ((relocation & mask) != 0)
65f38f15 15125 {
a680de9a 15126 relocation ^= relocation & mask;
25f53a85 15127 info->callbacks->einfo
8de848d8 15128 (_("%P: %H: error: %s not a multiple of %u\n"),
25f53a85 15129 input_bfd, input_section, rel->r_offset,
b80eed39 15130 howto->name,
adadcc0c 15131 mask + 1);
65f38f15 15132 bfd_set_error (bfd_error_bad_value);
b34976b6 15133 ret = FALSE;
c316a17c 15134 goto copy_reloc;
65f38f15
AM		 15135 }
15136 break;
5bd4f169
AM		 15137 }
15138
239e1f3a
AM		 15139 /* Dynamic relocs are not propagated for SEC_DEBUGGING sections
15140 because such sections are not SEC_ALLOC and thus ld.so will
15141 not process them. */
65f38f15 15142 if (unresolved_reloc
239e1f3a 15143 && !((input_section->flags & SEC_DEBUGGING) != 0
1d5316ab
AM		 15144 && h->elf.def_dynamic)
15145 && _bfd_elf_section_offset (output_bfd, info, input_section,
15146 rel->r_offset) != (bfd_vma) -1)
9c07fe7c 15147 {
25f53a85 15148 info->callbacks->einfo
bc30df16 15149 (_("%P: %H: unresolvable %s against `%T'\n"),
25f53a85 15150 input_bfd, input_section, rel->r_offset,
b80eed39 15151 howto->name,
039b3fef 15152 h->elf.root.root.string);
b34976b6 15153 ret = FALSE;
9c07fe7c 15154 }
5bd4f169 15155
b80eed39
AM		 15156 /* 16-bit fields in insns mostly have signed values, but a
15157 few insns have 16-bit unsigned values. Really, we should
15158 have different reloc types. */
15159 if (howto->complain_on_overflow != complain_overflow_dont
15160 && howto->dst_mask == 0xffff
15161 && (input_section->flags & SEC_CODE) != 0)
15162 {
15163 enum complain_overflow complain = complain_overflow_signed;
15164
15165 insn = bfd_get_32 (input_bfd, contents + (rel->r_offset & ~3));
a47622ac
AM		 15166 if ((insn & (0x3f << 26)) == 10u << 26 /* cmpli */)
15167 complain = complain_overflow_bitfield;
15168 else if (howto->rightshift == 0
15169 ? ((insn & (0x3f << 26)) == 28u << 26 /* andi */
15170 || (insn & (0x3f << 26)) == 24u << 26 /* ori */
15171 || (insn & (0x3f << 26)) == 26u << 26 /* xori */)
15172 : ((insn & (0x3f << 26)) == 29u << 26 /* andis */
15173 || (insn & (0x3f << 26)) == 25u << 26 /* oris */
15174 || (insn & (0x3f << 26)) == 27u << 26 /* xoris */))
b80eed39
AM		 15175 complain = complain_overflow_unsigned;
15176 if (howto->complain_on_overflow != complain)
15177 {
15178 alt_howto = *howto;
15179 alt_howto.complain_on_overflow = complain;
15180 howto = &alt_howto;
15181 }
15182 }
15183
a680de9a
PB		 15184 if (r_type == R_PPC64_REL16DX_HA)
15185 {
15186 /* Split field reloc isn't handled by _bfd_final_link_relocate. */
15187 if (rel->r_offset + 4 > input_section->size)
15188 r = bfd_reloc_outofrange;
15189 else
15190 {
15191 relocation += addend;
15192 relocation -= (rel->r_offset
15193 + input_section->output_offset
15194 + input_section->output_section->vma);
15195 relocation = (bfd_signed_vma) relocation >> 16;
15196 insn = bfd_get_32 (input_bfd, contents + rel->r_offset);
15197 insn &= ~0x1fffc1;
15198 insn |= (relocation & 0xffc1) | ((relocation & 0x3e) << 15);
15199 bfd_put_32 (input_bfd, insn, contents + rel->r_offset);
15200 r = bfd_reloc_ok;
15201 if (relocation + 0x8000 > 0xffff)
15202 r = bfd_reloc_overflow;
15203 }
15204 }
15205 else
15206 r = _bfd_final_link_relocate (howto, input_bfd, input_section, contents,
15207 rel->r_offset, relocation, addend);
5bd4f169 15208
ef60b7ff 15209 if (r != bfd_reloc_ok)
5bd4f169 15210 {
bc30df16 15211 char *more_info = NULL;
b80eed39 15212 const char *reloc_name = howto->name;
bc30df16
AM		 15213
15214 if (reloc_dest != DEST_NORMAL)
15215 {
15216 more_info = bfd_malloc (strlen (reloc_name) + 8);
15217 if (more_info != NULL)
15218 {
15219 strcpy (more_info, reloc_name);
15220 strcat (more_info, (reloc_dest == DEST_OPD
15221 ? " (OPD)" : " (stub)"));
15222 reloc_name = more_info;
15223 }
15224 }
15225
cd27b276 15226 if (r == bfd_reloc_overflow)
5bd4f169 15227 {
8131c122
AM		 15228 /* On code like "if (foo) foo();" don't report overflow
15229 on a branch to zero when foo is undefined. */
15230 if (!warned
15231 && (reloc_dest == DEST_STUB
15232 || !(h != NULL
15233 && (h->elf.root.type == bfd_link_hash_undefweak
15234 || h->elf.root.type == bfd_link_hash_undefined)
15235 && is_branch_reloc (r_type))))
1a72702b
AM		 15236 info->callbacks->reloc_overflow (info, &h->elf.root,
15237 sym_name, reloc_name,
15238 orig_rel.r_addend,
15239 input_bfd, input_section,
15240 rel->r_offset);
ef60b7ff
AM		 15241 }
15242 else
15243 {
25f53a85 15244 info->callbacks->einfo
bc30df16 15245 (_("%P: %H: %s against `%T': error %d\n"),
25f53a85 15246 input_bfd, input_section, rel->r_offset,
bc30df16 15247 reloc_name, sym_name, (int) r);
b34976b6 15248 ret = FALSE;
ef60b7ff 15249 }
bc30df16
AM		 15250 if (more_info != NULL)
15251 free (more_info);
5bd4f169 15252 }
c316a17c
AM		 15253 copy_reloc:
15254 if (wrel != rel)
15255 *wrel = *rel;
15256 }
15257
15258 if (wrel != rel)
15259 {
15260 Elf_Internal_Shdr *rel_hdr;
15261 size_t deleted = rel - wrel;
15262
15263 rel_hdr = _bfd_elf_single_rel_hdr (input_section->output_section);
15264 rel_hdr->sh_size -= rel_hdr->sh_entsize * deleted;
15265 if (rel_hdr->sh_size == 0)
15266 {
15267 /* It is too late to remove an empty reloc section. Leave
15268 one NONE reloc.
15269 ??? What is wrong with an empty section??? */
15270 rel_hdr->sh_size = rel_hdr->sh_entsize;
15271 deleted -= 1;
15272 }
15273 rel_hdr = _bfd_elf_single_rel_hdr (input_section);
15274 rel_hdr->sh_size -= rel_hdr->sh_entsize * deleted;
15275 input_section->reloc_count -= deleted;
5bd4f169
AM		 15276 }
15277
645ea6a9
AM		 15278 /* If we're emitting relocations, then shortly after this function
15279 returns, reloc offsets and addends for this section will be
15280 adjusted. Worse, reloc symbol indices will be for the output
8860955f
AM		 15281 file rather than the input. Save a copy of the relocs for
15282 opd_entry_value. */
0e1862bb 15283 if (is_opd && (info->emitrelocations || bfd_link_relocatable (info)))
8860955f
AM		 15284 {
15285 bfd_size_type amt;
15286 amt = input_section->reloc_count * sizeof (Elf_Internal_Rela);
15287 rel = bfd_alloc (input_bfd, amt);
729eabd5
AM		 15288 BFD_ASSERT (ppc64_elf_tdata (input_bfd)->opd.relocs == NULL);
15289 ppc64_elf_tdata (input_bfd)->opd.relocs = rel;
8860955f
AM		 15290 if (rel == NULL)
15291 return FALSE;
15292 memcpy (rel, relocs, amt);
15293 }
5bd4f169
AM		 15294 return ret;
15295}
15296
754021d0
AM		 15297/* Adjust the value of any local symbols in opd sections. */
15298
6e0b88f1 15299static int
754021d0
AM		 15300ppc64_elf_output_symbol_hook (struct bfd_link_info *info,
15301 const char *name ATTRIBUTE_UNUSED,
15302 Elf_Internal_Sym *elfsym,
15303 asection *input_sec,
15304 struct elf_link_hash_entry *h)
15305{
74f0fb50
AM		 15306 struct _opd_sec_data *opd;
15307 long adjust;
754021d0
AM		 15308 bfd_vma value;
15309
4025353c 15310 if (h != NULL)
6e0b88f1 15311 return 1;
4025353c 15312
74f0fb50
AM		 15313 opd = get_opd_info (input_sec);
15314 if (opd == NULL || opd->adjust == NULL)
6e0b88f1 15315 return 1;
754021d0
AM		 15316
15317 value = elfsym->st_value - input_sec->output_offset;
0e1862bb 15318 if (!bfd_link_relocatable (info))
754021d0
AM		 15319 value -= input_sec->output_section->vma;
15320
51aecdc5 15321 adjust = opd->adjust[OPD_NDX (value)];
4025353c 15322 if (adjust == -1)
6e0b88f1
AM		 15323 return 2;
15324
15325 elfsym->st_value += adjust;
15326 return 1;
754021d0
AM		 15327}
15328
5bd4f169
AM		 15329/* Finish up dynamic symbol handling. We set the contents of various
15330 dynamic sections here. */
15331
b34976b6 15332static bfd_boolean
4ce794b7
AM		 15333ppc64_elf_finish_dynamic_symbol (bfd *output_bfd,
15334 struct bfd_link_info *info,
15335 struct elf_link_hash_entry *h,
ab6dce23 15336 Elf_Internal_Sym *sym ATTRIBUTE_UNUSED)
5bd4f169 15337{
65f38f15 15338 struct ppc_link_hash_table *htab;
8387904d
AM		 15339 struct plt_entry *ent;
15340 Elf_Internal_Rela rela;
15341 bfd_byte *loc;
5bd4f169 15342
65f38f15 15343 htab = ppc_hash_table (info);
4dfe6ac6
NC		 15344 if (htab == NULL)
15345 return FALSE;
5bd4f169 15346
8387904d
AM		 15347 for (ent = h->plt.plist; ent != NULL; ent = ent->next)
15348 if (ent->plt.offset != (bfd_vma) -1)
15349 {
15350 /* This symbol has an entry in the procedure linkage
15351 table. Set it up. */
e054468f
AM		 15352 if (!htab->elf.dynamic_sections_created
15353 || h->dynindx == -1)
15354 {
15355 BFD_ASSERT (h->type == STT_GNU_IFUNC
15356 && h->def_regular
15357 && (h->root.type == bfd_link_hash_defined
15358 || h->root.type == bfd_link_hash_defweak));
33e44f2e
AM		 15359 rela.r_offset = (htab->elf.iplt->output_section->vma
15360 + htab->elf.iplt->output_offset
25f23106 15361 + ent->plt.offset);
ee67d69a
AM		 15362 if (htab->opd_abi)
15363 rela.r_info = ELF64_R_INFO (0, R_PPC64_JMP_IREL);
15364 else
15365 rela.r_info = ELF64_R_INFO (0, R_PPC64_IRELATIVE);
e054468f
AM		 15366 rela.r_addend = (h->root.u.def.value
15367 + h->root.u.def.section->output_offset
15368 + h->root.u.def.section->output_section->vma
15369 + ent->addend);
33e44f2e
AM		 15370 loc = (htab->elf.irelplt->contents
15371 + (htab->elf.irelplt->reloc_count++
25f23106 15372 * sizeof (Elf64_External_Rela)));
e054468f
AM		 15373 }
15374 else
15375 {
33e44f2e
AM		 15376 rela.r_offset = (htab->elf.splt->output_section->vma
15377 + htab->elf.splt->output_offset
25f23106 15378 + ent->plt.offset);
e054468f
AM		 15379 rela.r_info = ELF64_R_INFO (h->dynindx, R_PPC64_JMP_SLOT);
15380 rela.r_addend = ent->addend;
33e44f2e 15381 loc = (htab->elf.srelplt->contents
b9e5796b
AM		 15382 + ((ent->plt.offset - PLT_INITIAL_ENTRY_SIZE (htab))
15383 / PLT_ENTRY_SIZE (htab) * sizeof (Elf64_External_Rela)));
e054468f 15384 }
8387904d 15385 bfd_elf64_swap_reloca_out (output_bfd, &rela, loc);
a345bc8d
AM		 15386
15387 if (!htab->opd_abi)
15388 {
15389 if (!h->def_regular)
15390 {
15391 /* Mark the symbol as undefined, rather than as
15392 defined in glink. Leave the value if there were
15393 any relocations where pointer equality matters
15394 (this is a clue for the dynamic linker, to make
15395 function pointer comparisons work between an
15396 application and shared library), otherwise set it
15397 to zero. */
15398 sym->st_shndx = SHN_UNDEF;
15399 if (!h->pointer_equality_needed)
15400 sym->st_value = 0;
15401 else if (!h->ref_regular_nonweak)
15402 {
15403 /* This breaks function pointer comparisons, but
15404 that is better than breaking tests for a NULL
15405 function pointer. */
15406 sym->st_value = 0;
15407 }
15408 }
15409 }
8387904d 15410 }
5bd4f169 15411
f5385ebf 15412 if (h->needs_copy)
5bd4f169 15413 {
65f38f15 15414 /* This symbol needs a copy reloc. Set it up. */
5bd4f169 15415
65f38f15
AM		 15416 if (h->dynindx == -1
15417 || (h->root.type != bfd_link_hash_defined
15418 && h->root.type != bfd_link_hash_defweak)
4ce794b7 15419 || htab->relbss == NULL)
65f38f15 15420 abort ();
5bd4f169
AM		 15421
15422 rela.r_offset = (h->root.u.def.value
15423 + h->root.u.def.section->output_section->vma
15424 + h->root.u.def.section->output_offset);
15425 rela.r_info = ELF64_R_INFO (h->dynindx, R_PPC64_COPY);
15426 rela.r_addend = 0;
4ce794b7
AM		 15427 loc = htab->relbss->contents;
15428 loc += htab->relbss->reloc_count++ * sizeof (Elf64_External_Rela);
65f38f15 15429 bfd_elf64_swap_reloca_out (output_bfd, &rela, loc);
5bd4f169
AM		 15430 }
15431
b34976b6 15432 return TRUE;
5bd4f169
AM		 15433}
15434
65f38f15
AM		 15435/* Used to decide how to sort relocs in an optimal manner for the
15436 dynamic linker, before writing them out. */
15437
15438static enum elf_reloc_type_class
7e612e98
AM		 15439ppc64_elf_reloc_type_class (const struct bfd_link_info *info,
15440 const asection *rel_sec,
15441 const Elf_Internal_Rela *rela)
65f38f15 15442{
04c9666a 15443 enum elf_ppc64_reloc_type r_type;
7e612e98
AM		 15444 struct ppc_link_hash_table *htab = ppc_hash_table (info);
15445
33e44f2e 15446 if (rel_sec == htab->elf.irelplt)
7e612e98 15447 return reloc_class_ifunc;
a33d1f77 15448
4ce794b7 15449 r_type = ELF64_R_TYPE (rela->r_info);
a33d1f77 15450 switch (r_type)
65f38f15
AM		 15451 {
15452 case R_PPC64_RELATIVE:
15453 return reloc_class_relative;
15454 case R_PPC64_JMP_SLOT:
15455 return reloc_class_plt;
15456 case R_PPC64_COPY:
15457 return reloc_class_copy;
15458 default:
15459 return reloc_class_normal;
15460 }
15461}
15462
5bd4f169
AM		 15463/* Finish up the dynamic sections. */
15464
b34976b6 15465static bfd_boolean
4ce794b7
AM		 15466ppc64_elf_finish_dynamic_sections (bfd *output_bfd,
15467 struct bfd_link_info *info)
5bd4f169 15468{
65f38f15
AM		 15469 struct ppc_link_hash_table *htab;
15470 bfd *dynobj;
5bd4f169 15471 asection *sdyn;
5bd4f169 15472
65f38f15 15473 htab = ppc_hash_table (info);
4dfe6ac6
NC		 15474 if (htab == NULL)
15475 return FALSE;
15476
65f38f15 15477 dynobj = htab->elf.dynobj;
3d4d4302 15478 sdyn = bfd_get_linker_section (dynobj, ".dynamic");
5bd4f169 15479
65f38f15 15480 if (htab->elf.dynamic_sections_created)
5bd4f169 15481 {
5bd4f169
AM		 15482 Elf64_External_Dyn *dyncon, *dynconend;
15483
33e44f2e 15484 if (sdyn == NULL || htab->elf.sgot == NULL)
65f38f15 15485 abort ();
5bd4f169
AM		 15486
15487 dyncon = (Elf64_External_Dyn *) sdyn->contents;
eea6121a 15488 dynconend = (Elf64_External_Dyn *) (sdyn->contents + sdyn->size);
5bd4f169
AM		 15489 for (; dyncon < dynconend; dyncon++)
15490 {
15491 Elf_Internal_Dyn dyn;
19397422 15492 asection *s;
5bd4f169
AM		 15493
15494 bfd_elf64_swap_dyn_in (dynobj, dyncon, &dyn);
15495
15496 switch (dyn.d_tag)
15497 {
65f38f15
AM		 15498 default:
15499 continue;
5bd4f169 15500
5d1634d7 15501 case DT_PPC64_GLINK:
4ce794b7 15502 s = htab->glink;
6348e046 15503 dyn.d_un.d_ptr = s->output_section->vma + s->output_offset;
ad8e1ba5
AM		 15504 /* We stupidly defined DT_PPC64_GLINK to be the start
15505 of glink rather than the first entry point, which is
15506 what ld.so needs, and now have a bigger stub to
15507 support automatic multiple TOCs. */
b9e5796b 15508 dyn.d_un.d_ptr += GLINK_CALL_STUB_SIZE - 8 * 4;
5d1634d7
AM		 15509 break;
15510
19397422
AM		 15511 case DT_PPC64_OPD:
15512 s = bfd_get_section_by_name (output_bfd, ".opd");
6348e046
AM		 15513 if (s == NULL)
15514 continue;
15515 dyn.d_un.d_ptr = s->vma;
19397422
AM		 15516 break;
15517
e8910a83
AM		 15518 case DT_PPC64_OPT:
15519 if (htab->do_multi_toc && htab->multi_toc_needed)
15520 dyn.d_un.d_val |= PPC64_OPT_MULTI_TOC;
15521 break;
15522
19397422
AM		 15523 case DT_PPC64_OPDSZ:
15524 s = bfd_get_section_by_name (output_bfd, ".opd");
6348e046
AM		 15525 if (s == NULL)
15526 continue;
eea6121a 15527 dyn.d_un.d_val = s->size;
19397422
AM		 15528 break;
15529
65f38f15 15530 case DT_PLTGOT:
33e44f2e 15531 s = htab->elf.splt;
6348e046 15532 dyn.d_un.d_ptr = s->output_section->vma + s->output_offset;
65f38f15
AM		 15533 break;
15534
15535 case DT_JMPREL:
33e44f2e 15536 s = htab->elf.srelplt;
6348e046 15537 dyn.d_un.d_ptr = s->output_section->vma + s->output_offset;
65f38f15 15538 break;
5bd4f169 15539
65f38f15 15540 case DT_PLTRELSZ:
33e44f2e 15541 dyn.d_un.d_val = htab->elf.srelplt->size;
5d1634d7
AM		 15542 break;
15543
15544 case DT_RELASZ:
15545 /* Don't count procedure linkage table relocs in the
15546 overall reloc count. */
33e44f2e 15547 s = htab->elf.srelplt;
6348e046
AM		 15548 if (s == NULL)
15549 continue;
eea6121a 15550 dyn.d_un.d_val -= s->size;
6348e046
AM		 15551 break;
15552
15553 case DT_RELA:
15554 /* We may not be using the standard ELF linker script.
15555 If .rela.plt is the first .rela section, we adjust
15556 DT_RELA to not include it. */
33e44f2e 15557 s = htab->elf.srelplt;
6348e046
AM		 15558 if (s == NULL)
15559 continue;
15560 if (dyn.d_un.d_ptr != s->output_section->vma + s->output_offset)
15561 continue;
eea6121a 15562 dyn.d_un.d_ptr += s->size;
65f38f15 15563 break;
5bd4f169 15564 }
5bd4f169 15565
65f38f15 15566 bfd_elf64_swap_dyn_out (output_bfd, &dyn, dyncon);
5bd4f169 15567 }
5bd4f169
AM		 15568 }
15569
33e44f2e 15570 if (htab->elf.sgot != NULL && htab->elf.sgot->size != 0)
5d1634d7
AM		 15571 {
15572 /* Fill in the first entry in the global offset table.
15573 We use it to hold the link-time TOCbase. */
15574 bfd_put_64 (output_bfd,
60ee0d4a 15575 elf_gp (output_bfd) + TOC_BASE_OFF,
33e44f2e 15576 htab->elf.sgot->contents);
5d1634d7
AM		 15577
15578 /* Set .got entry size. */
33e44f2e 15579 elf_section_data (htab->elf.sgot->output_section)->this_hdr.sh_entsize = 8;
5d1634d7
AM		 15580 }
15581
33e44f2e 15582 if (htab->elf.splt != NULL && htab->elf.splt->size != 0)
5d1634d7
AM		 15583 {
15584 /* Set .plt entry size. */
33e44f2e 15585 elf_section_data (htab->elf.splt->output_section)->this_hdr.sh_entsize
b9e5796b 15586 = PLT_ENTRY_SIZE (htab);
5d1634d7
AM		 15587 }
15588
84f5d08e
AM		 15589 /* brlt is SEC_LINKER_CREATED, so we need to write out relocs for
15590 brlt ourselves if emitrelocations. */
15591 if (htab->brlt != NULL
15592 && htab->brlt->reloc_count != 0
15593 && !_bfd_elf_link_output_relocs (output_bfd,
15594 htab->brlt,
d4730f92 15595 elf_section_data (htab->brlt)->rela.hdr,
84f5d08e
AM		 15596 elf_section_data (htab->brlt)->relocs,
15597 NULL))
15598 return FALSE;
15599
176a0d42
AM		 15600 if (htab->glink != NULL
15601 && htab->glink->reloc_count != 0
15602 && !_bfd_elf_link_output_relocs (output_bfd,
15603 htab->glink,
d4730f92 15604 elf_section_data (htab->glink)->rela.hdr,
176a0d42
AM		 15605 elf_section_data (htab->glink)->relocs,
15606 NULL))
15607 return FALSE;
15608
58d180e8 15609 if (htab->glink_eh_frame != NULL
da44f4e5
AM		 15610 && htab->glink_eh_frame->size != 0)
15611 {
15612 bfd_vma val;
15613 bfd_byte *p;
15614 asection *stub_sec;
15615
15616 p = htab->glink_eh_frame->contents + sizeof (glink_eh_frame_cie);
15617 for (stub_sec = htab->params->stub_bfd->sections;
15618 stub_sec != NULL;
15619 stub_sec = stub_sec->next)
15620 if ((stub_sec->flags & SEC_LINKER_CREATED) == 0)
15621 {
15622 /* FDE length. */
15623 p += 4;
15624 /* CIE pointer. */
15625 p += 4;
15626 /* Offset to stub section. */
15627 val = (stub_sec->output_section->vma
15628 + stub_sec->output_offset);
15629 val -= (htab->glink_eh_frame->output_section->vma
15630 + htab->glink_eh_frame->output_offset
15631 + (p - htab->glink_eh_frame->contents));
15632 if (val + 0x80000000 > 0xffffffff)
15633 {
15634 info->callbacks->einfo
15635 (_("%P: %s offset too large for .eh_frame sdata4 encoding"),
15636 stub_sec->name);
15637 return FALSE;
15638 }
15639 bfd_put_32 (dynobj, val, p);
15640 p += 4;
15641 /* stub section size. */
15642 p += 4;
15643 /* Augmentation. */
15644 p += 1;
15645 /* Pad. */
15646 p += 7;
15647 }
15648 if (htab->glink != NULL && htab->glink->size != 0)
15649 {
15650 /* FDE length. */
15651 p += 4;
15652 /* CIE pointer. */
15653 p += 4;
15654 /* Offset to .glink. */
15655 val = (htab->glink->output_section->vma
15656 + htab->glink->output_offset
15657 + 8);
15658 val -= (htab->glink_eh_frame->output_section->vma
15659 + htab->glink_eh_frame->output_offset
15660 + (p - htab->glink_eh_frame->contents));
15661 if (val + 0x80000000 > 0xffffffff)
15662 {
15663 info->callbacks->einfo
15664 (_("%P: %s offset too large for .eh_frame sdata4 encoding"),
15665 htab->glink->name);
15666 return FALSE;
15667 }
15668 bfd_put_32 (dynobj, val, p);
15669 p += 4;
15670 /* .glink size. */
15671 p += 4;
15672 /* Augmentation. */
15673 p += 1;
15674 /* Ops. */
15675 p += 7;
15676 }
15677
15678 if (htab->glink_eh_frame->sec_info_type == SEC_INFO_TYPE_EH_FRAME
15679 && !_bfd_elf_write_section_eh_frame (output_bfd, info,
15680 htab->glink_eh_frame,
15681 htab->glink_eh_frame->contents))
15682 return FALSE;
15683 }
58d180e8 15684
e717da7e 15685 /* We need to handle writing out multiple GOT sections ourselves,
7b53ace3
AM		 15686 since we didn't add them to DYNOBJ. We know dynobj is the first
15687 bfd. */
c72f2fb2 15688 while ((dynobj = dynobj->link.next) != NULL)
e717da7e
AM		 15689 {
15690 asection *s;
7b53ace3 15691
0c8d6e5c 15692 if (!is_ppc64_elf (dynobj))
7b53ace3
AM		 15693 continue;
15694
e717da7e
AM		 15695 s = ppc64_elf_tdata (dynobj)->got;
15696 if (s != NULL
eea6121a 15697 && s->size != 0
e717da7e
AM		 15698 && s->output_section != bfd_abs_section_ptr
15699 && !bfd_set_section_contents (output_bfd, s->output_section,
15700 s->contents, s->output_offset,
eea6121a 15701 s->size))
e717da7e
AM		 15702 return FALSE;
15703 s = ppc64_elf_tdata (dynobj)->relgot;
15704 if (s != NULL
eea6121a 15705 && s->size != 0
e717da7e
AM		 15706 && s->output_section != bfd_abs_section_ptr
15707 && !bfd_set_section_contents (output_bfd, s->output_section,
15708 s->contents, s->output_offset,
eea6121a 15709 s->size))
e717da7e
AM		 15710 return FALSE;
15711 }
f6c52c13 15712
b34976b6 15713 return TRUE;
5bd4f169
AM		 15714}
15715
5bd4f169 15716#include "elf64-target.h"
7b8e7dad
AM		 15717
15718/* FreeBSD support */
15719
15720#undef TARGET_LITTLE_SYM
15721#undef TARGET_LITTLE_NAME
15722
15723#undef TARGET_BIG_SYM
6d00b590 15724#define TARGET_BIG_SYM powerpc_elf64_fbsd_vec
7b8e7dad
AM		 15725#undef TARGET_BIG_NAME
15726#define TARGET_BIG_NAME "elf64-powerpc-freebsd"
15727
15728#undef ELF_OSABI
15729#define ELF_OSABI ELFOSABI_FREEBSD
15730
15731#undef elf64_bed
15732#define elf64_bed elf64_powerpc_fbsd_bed
15733
15734#include "elf64-target.h"
15735
GDB Binutils - Deliverables
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