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[deliverable/binutils-gdb.git] / bfd / elf64-ppc.c
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5bd4f169 1/* PowerPC64-specific support for 64-bit ELF.
3a71aa26 2 Copyright 1999, 2000, 2001, 2002, 2003, 2004, 2005, 2006, 2007, 2008,
794e51c0 3 2009, 2010, 2011, 2012 Free Software Foundation, Inc.
5bd4f169
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4 Written by Linus Nordberg, Swox AB <info@swox.com>,
5 based on elf32-ppc.c by Ian Lance Taylor.
32ca9640 6 Largely rewritten by Alan Modra.
5bd4f169 7
ae9a127f 8 This file is part of BFD, the Binary File Descriptor library.
5bd4f169 9
ae9a127f
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10 This program is free software; you can redistribute it and/or modify
11 it under the terms of the GNU General Public License as published by
cd123cb7 12 the Free Software Foundation; either version 3 of the License, or
ae9a127f 13 (at your option) any later version.
5bd4f169 14
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NC
15 This program is distributed in the hope that it will be useful,
16 but WITHOUT ANY WARRANTY; without even the implied warranty of
17 MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
18 GNU General Public License for more details.
5bd4f169 19
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20 You should have received a copy of the GNU General Public License along
21 with this program; if not, write to the Free Software Foundation, Inc.,
3e110533 22 51 Franklin Street - Fifth Floor, Boston, MA 02110-1301, USA. */
5bd4f169 23
cd123cb7 24
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25/* The 64-bit PowerPC ELF ABI may be found at
26 http://www.linuxbase.org/spec/ELF/ppc64/PPC-elf64abi.txt, and
27 http://www.linuxbase.org/spec/ELF/ppc64/spec/book1.html */
5bd4f169 28
3db64b00 29#include "sysdep.h"
183e98be 30#include <stdarg.h>
5bd4f169 31#include "bfd.h"
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32#include "bfdlink.h"
33#include "libbfd.h"
34#include "elf-bfd.h"
04c9666a 35#include "elf/ppc64.h"
5d1634d7 36#include "elf64-ppc.h"
58d180e8 37#include "dwarf2.h"
5bd4f169 38
805fc799 39static bfd_reloc_status_type ppc64_elf_ha_reloc
4ce794b7 40 (bfd *, arelent *, asymbol *, void *, asection *, bfd *, char **);
2441e016
AM
41static bfd_reloc_status_type ppc64_elf_branch_reloc
42 (bfd *, arelent *, asymbol *, void *, asection *, bfd *, char **);
805fc799 43static bfd_reloc_status_type ppc64_elf_brtaken_reloc
4ce794b7 44 (bfd *, arelent *, asymbol *, void *, asection *, bfd *, char **);
805fc799 45static bfd_reloc_status_type ppc64_elf_sectoff_reloc
4ce794b7 46 (bfd *, arelent *, asymbol *, void *, asection *, bfd *, char **);
805fc799 47static bfd_reloc_status_type ppc64_elf_sectoff_ha_reloc
4ce794b7 48 (bfd *, arelent *, asymbol *, void *, asection *, bfd *, char **);
805fc799 49static bfd_reloc_status_type ppc64_elf_toc_reloc
4ce794b7 50 (bfd *, arelent *, asymbol *, void *, asection *, bfd *, char **);
805fc799 51static bfd_reloc_status_type ppc64_elf_toc_ha_reloc
4ce794b7 52 (bfd *, arelent *, asymbol *, void *, asection *, bfd *, char **);
805fc799 53static bfd_reloc_status_type ppc64_elf_toc64_reloc
4ce794b7 54 (bfd *, arelent *, asymbol *, void *, asection *, bfd *, char **);
805fc799 55static bfd_reloc_status_type ppc64_elf_unhandled_reloc
4ce794b7 56 (bfd *, arelent *, asymbol *, void *, asection *, bfd *, char **);
2441e016 57static bfd_vma opd_entry_value
aef36ac1 58 (asection *, bfd_vma, asection **, bfd_vma *, bfd_boolean);
5bd4f169 59
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60#define TARGET_LITTLE_SYM bfd_elf64_powerpcle_vec
61#define TARGET_LITTLE_NAME "elf64-powerpcle"
62#define TARGET_BIG_SYM bfd_elf64_powerpc_vec
63#define TARGET_BIG_NAME "elf64-powerpc"
64#define ELF_ARCH bfd_arch_powerpc
ae95ffa6 65#define ELF_TARGET_ID PPC64_ELF_DATA
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66#define ELF_MACHINE_CODE EM_PPC64
67#define ELF_MAXPAGESIZE 0x10000
24718e3b 68#define ELF_COMMONPAGESIZE 0x1000
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69#define elf_info_to_howto ppc64_elf_info_to_howto
70
71#define elf_backend_want_got_sym 0
72#define elf_backend_want_plt_sym 0
73#define elf_backend_plt_alignment 3
74#define elf_backend_plt_not_loaded 1
ad8e1ba5 75#define elf_backend_got_header_size 8
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76#define elf_backend_can_gc_sections 1
77#define elf_backend_can_refcount 1
78#define elf_backend_rela_normal 1
6bfdb61b 79#define elf_backend_default_execstack 0
ad8e1ba5 80
e717da7e 81#define bfd_elf64_mkobject ppc64_elf_mkobject
ad8e1ba5 82#define bfd_elf64_bfd_reloc_type_lookup ppc64_elf_reloc_type_lookup
aa374f67 83#define bfd_elf64_bfd_reloc_name_lookup ppc64_elf_reloc_name_lookup
c79d6685 84#define bfd_elf64_bfd_merge_private_bfd_data _bfd_generic_verify_endian_match
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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
87#define bfd_elf64_bfd_link_hash_table_free ppc64_elf_link_hash_table_free
90e3cdf2 88#define bfd_elf64_get_synthetic_symtab ppc64_elf_get_synthetic_symtab
aa374f67 89#define bfd_elf64_bfd_link_just_syms ppc64_elf_link_just_syms
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90
91#define elf_backend_object_p ppc64_elf_object_p
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92#define elf_backend_grok_prstatus ppc64_elf_grok_prstatus
93#define elf_backend_grok_psinfo ppc64_elf_grok_psinfo
183e98be 94#define elf_backend_write_core_note ppc64_elf_write_core_note
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95#define elf_backend_create_dynamic_sections ppc64_elf_create_dynamic_sections
96#define elf_backend_copy_indirect_symbol ppc64_elf_copy_indirect_symbol
555cd476 97#define elf_backend_add_symbol_hook ppc64_elf_add_symbol_hook
7d9616d7 98#define elf_backend_check_directives ppc64_elf_process_dot_syms
97fed1c9 99#define elf_backend_as_needed_cleanup ppc64_elf_as_needed_cleanup
8387904d 100#define elf_backend_archive_symbol_lookup ppc64_elf_archive_symbol_lookup
ad8e1ba5 101#define elf_backend_check_relocs ppc64_elf_check_relocs
74f0fb50 102#define elf_backend_gc_keep ppc64_elf_gc_keep
64d03ab5 103#define elf_backend_gc_mark_dynamic_ref ppc64_elf_gc_mark_dynamic_ref
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104#define elf_backend_gc_mark_hook ppc64_elf_gc_mark_hook
105#define elf_backend_gc_sweep_hook ppc64_elf_gc_sweep_hook
106#define elf_backend_adjust_dynamic_symbol ppc64_elf_adjust_dynamic_symbol
107#define elf_backend_hide_symbol ppc64_elf_hide_symbol
9f296da3 108#define elf_backend_maybe_function_sym ppc64_elf_maybe_function_sym
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109#define elf_backend_always_size_sections ppc64_elf_func_desc_adjust
110#define elf_backend_size_dynamic_sections ppc64_elf_size_dynamic_sections
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
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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
e054468f 119#define elf_backend_post_process_headers _bfd_elf_set_osabi
ad8e1ba5 120
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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. */
126#define PLT_ENTRY_SIZE 24
127
128/* The initial size of the plt reserved for the dynamic linker. */
5d1634d7 129#define PLT_INITIAL_ENTRY_SIZE PLT_ENTRY_SIZE
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130
131/* TOC base pointers offset from start of TOC. */
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132#define TOC_BASE_OFF 0x8000
133
134/* Offset of tp and dtp pointers from start of TLS block. */
135#define TP_OFFSET 0x7000
136#define DTP_OFFSET 0x8000
5bd4f169 137
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138/* .plt call stub instructions. The normal stub is like this, but
139 sometimes the .plt entry crosses a 64k boundary and we need to
ac2df442 140 insert an addi to adjust r12. */
ad8e1ba5 141#define PLT_CALL_STUB_SIZE (7*4)
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142#define ADDIS_R12_R2 0x3d820000 /* addis %r12,%r2,xxx@ha */
143#define STD_R2_40R1 0xf8410028 /* std %r2,40(%r1) */
144#define LD_R11_0R12 0xe96c0000 /* ld %r11,xxx+0@l(%r12) */
5d1634d7 145#define MTCTR_R11 0x7d6903a6 /* mtctr %r11 */
ac2df442 146#define LD_R2_0R12 0xe84c0000 /* ld %r2,xxx+8@l(%r12) */
5d1634d7
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147 /* ld %r11,xxx+16@l(%r12) */
148#define BCTR 0x4e800420 /* bctr */
149
5d1634d7 150
ee4bf8d2 151#define ADDIS_R12_R12 0x3d8c0000 /* addis %r12,%r12,off@ha */
ac2df442 152#define ADDI_R12_R12 0x398c0000 /* addi %r12,%r12,off@l */
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153#define ADDIS_R2_R2 0x3c420000 /* addis %r2,%r2,off@ha */
154#define ADDI_R2_R2 0x38420000 /* addi %r2,%r2,off@l */
155
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AM
156#define XOR_R11_R11_R11 0x7d6b5a78 /* xor %r11,%r11,%r11 */
157#define ADD_R12_R12_R11 0x7d8c5a14 /* add %r12,%r12,%r11 */
158#define ADD_R2_R2_R11 0x7c425a14 /* add %r2,%r2,%r11 */
159#define CMPLDI_R2_0 0x28220000 /* cmpldi %r2,0 */
160#define BNECTR 0x4ca20420 /* bnectr+ */
161#define BNECTR_P4 0x4ce20420 /* bnectr+ */
162
ac2df442
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163#define LD_R11_0R2 0xe9620000 /* ld %r11,xxx+0(%r2) */
164#define LD_R2_0R2 0xe8420000 /* ld %r2,xxx+0(%r2) */
165
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166#define LD_R2_40R1 0xe8410028 /* ld %r2,40(%r1) */
167
ee4bf8d2 168/* glink call stub instructions. We enter with the index in R0. */
ad8e1ba5 169#define GLINK_CALL_STUB_SIZE (16*4)
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170 /* 0: */
171 /* .quad plt0-1f */
172 /* __glink: */
173#define MFLR_R12 0x7d8802a6 /* mflr %12 */
174#define BCL_20_31 0x429f0005 /* bcl 20,31,1f */
175 /* 1: */
176#define MFLR_R11 0x7d6802a6 /* mflr %11 */
177#define LD_R2_M16R11 0xe84bfff0 /* ld %2,(0b-1b)(%11) */
178#define MTLR_R12 0x7d8803a6 /* mtlr %12 */
179#define ADD_R12_R2_R11 0x7d825a14 /* add %12,%2,%11 */
180 /* ld %11,0(%12) */
181 /* ld %2,8(%12) */
182 /* mtctr %11 */
183 /* ld %11,16(%12) */
184 /* bctr */
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185
186/* Pad with this. */
187#define NOP 0x60000000
188
721956f4
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189/* Some other nops. */
190#define CROR_151515 0x4def7b82
191#define CROR_313131 0x4ffffb82
192
cedb70c5 193/* .glink entries for the first 32k functions are two instructions. */
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AM
194#define LI_R0_0 0x38000000 /* li %r0,0 */
195#define B_DOT 0x48000000 /* b . */
196
197/* After that, we need two instructions to load the index, followed by
198 a branch. */
199#define LIS_R0_0 0x3c000000 /* lis %r0,0 */
10ed1bba 200#define ORI_R0_R0_0 0x60000000 /* ori %r0,%r0,0 */
41bd81ab 201
deb0e272
AM
202/* Instructions used by the save and restore reg functions. */
203#define STD_R0_0R1 0xf8010000 /* std %r0,0(%r1) */
204#define STD_R0_0R12 0xf80c0000 /* std %r0,0(%r12) */
205#define LD_R0_0R1 0xe8010000 /* ld %r0,0(%r1) */
206#define LD_R0_0R12 0xe80c0000 /* ld %r0,0(%r12) */
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207#define STFD_FR0_0R1 0xd8010000 /* stfd %fr0,0(%r1) */
208#define LFD_FR0_0R1 0xc8010000 /* lfd %fr0,0(%r1) */
deb0e272
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209#define LI_R12_0 0x39800000 /* li %r12,0 */
210#define STVX_VR0_R12_R0 0x7c0c01ce /* stvx %v0,%r12,%r0 */
211#define LVX_VR0_R12_R0 0x7c0c00ce /* lvx %v0,%r12,%r0 */
212#define MTLR_R0 0x7c0803a6 /* mtlr %r0 */
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213#define BLR 0x4e800020 /* blr */
214
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AM
215/* Since .opd is an array of descriptors and each entry will end up
216 with identical R_PPC64_RELATIVE relocs, there is really no need to
217 propagate .opd relocs; The dynamic linker should be taught to
1e2f5b6e 218 relocate .opd without reloc entries. */
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219#ifndef NO_OPD_RELOCS
220#define NO_OPD_RELOCS 0
221#endif
5bd4f169 222\f
f5e87a1d 223#define ONES(n) (((bfd_vma) 1 << ((n) - 1) << 1) - 1)
b34976b6 224
5bd4f169 225/* Relocation HOWTO's. */
04c9666a 226static reloc_howto_type *ppc64_elf_howto_table[(int) R_PPC64_max];
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227
228static reloc_howto_type ppc64_elf_howto_raw[] = {
229 /* This reloc does nothing. */
230 HOWTO (R_PPC64_NONE, /* type */
231 0, /* rightshift */
411e1bfb
AM
232 2, /* size (0 = byte, 1 = short, 2 = long) */
233 32, /* bitsize */
b34976b6 234 FALSE, /* pc_relative */
5bd4f169 235 0, /* bitpos */
f5e87a1d 236 complain_overflow_dont, /* complain_on_overflow */
5bd4f169
AM
237 bfd_elf_generic_reloc, /* special_function */
238 "R_PPC64_NONE", /* name */
b34976b6 239 FALSE, /* partial_inplace */
d006db6c 240 0, /* src_mask */
5bd4f169 241 0, /* dst_mask */
b34976b6 242 FALSE), /* pcrel_offset */
5bd4f169
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243
244 /* A standard 32 bit relocation. */
245 HOWTO (R_PPC64_ADDR32, /* type */
246 0, /* rightshift */
247 2, /* size (0 = byte, 1 = short, 2 = long) */
248 32, /* bitsize */
b34976b6 249 FALSE, /* pc_relative */
5bd4f169
AM
250 0, /* bitpos */
251 complain_overflow_bitfield, /* complain_on_overflow */
252 bfd_elf_generic_reloc, /* special_function */
253 "R_PPC64_ADDR32", /* name */
b34976b6 254 FALSE, /* partial_inplace */
5bd4f169
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255 0, /* src_mask */
256 0xffffffff, /* dst_mask */
b34976b6 257 FALSE), /* pcrel_offset */
5bd4f169
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258
259 /* An absolute 26 bit branch; the lower two bits must be zero.
260 FIXME: we don't check that, we just clear them. */
261 HOWTO (R_PPC64_ADDR24, /* type */
262 0, /* rightshift */
263 2, /* size (0 = byte, 1 = short, 2 = long) */
264 26, /* bitsize */
b34976b6 265 FALSE, /* pc_relative */
5bd4f169
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266 0, /* bitpos */
267 complain_overflow_bitfield, /* complain_on_overflow */
268 bfd_elf_generic_reloc, /* special_function */
269 "R_PPC64_ADDR24", /* name */
b34976b6 270 FALSE, /* partial_inplace */
d006db6c 271 0, /* src_mask */
f5e87a1d 272 0x03fffffc, /* dst_mask */
b34976b6 273 FALSE), /* pcrel_offset */
5bd4f169
AM
274
275 /* A standard 16 bit relocation. */
276 HOWTO (R_PPC64_ADDR16, /* type */
277 0, /* rightshift */
278 1, /* size (0 = byte, 1 = short, 2 = long) */
279 16, /* bitsize */
b34976b6 280 FALSE, /* pc_relative */
5bd4f169
AM
281 0, /* bitpos */
282 complain_overflow_bitfield, /* complain_on_overflow */
283 bfd_elf_generic_reloc, /* special_function */
284 "R_PPC64_ADDR16", /* name */
b34976b6 285 FALSE, /* partial_inplace */
5bd4f169
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286 0, /* src_mask */
287 0xffff, /* dst_mask */
b34976b6 288 FALSE), /* pcrel_offset */
5bd4f169
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289
290 /* A 16 bit relocation without overflow. */
291 HOWTO (R_PPC64_ADDR16_LO, /* type */
292 0, /* rightshift */
293 1, /* size (0 = byte, 1 = short, 2 = long) */
294 16, /* bitsize */
b34976b6 295 FALSE, /* pc_relative */
5bd4f169
AM
296 0, /* bitpos */
297 complain_overflow_dont,/* complain_on_overflow */
298 bfd_elf_generic_reloc, /* special_function */
299 "R_PPC64_ADDR16_LO", /* name */
b34976b6 300 FALSE, /* partial_inplace */
5bd4f169
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301 0, /* src_mask */
302 0xffff, /* dst_mask */
b34976b6 303 FALSE), /* pcrel_offset */
5bd4f169
AM
304
305 /* Bits 16-31 of an address. */
306 HOWTO (R_PPC64_ADDR16_HI, /* type */
307 16, /* rightshift */
308 1, /* size (0 = byte, 1 = short, 2 = long) */
309 16, /* bitsize */
b34976b6 310 FALSE, /* pc_relative */
5bd4f169
AM
311 0, /* bitpos */
312 complain_overflow_dont, /* complain_on_overflow */
313 bfd_elf_generic_reloc, /* special_function */
314 "R_PPC64_ADDR16_HI", /* name */
b34976b6 315 FALSE, /* partial_inplace */
5bd4f169
AM
316 0, /* src_mask */
317 0xffff, /* dst_mask */
b34976b6 318 FALSE), /* pcrel_offset */
5bd4f169
AM
319
320 /* Bits 16-31 of an address, plus 1 if the contents of the low 16
321 bits, treated as a signed number, is negative. */
322 HOWTO (R_PPC64_ADDR16_HA, /* type */
323 16, /* rightshift */
324 1, /* size (0 = byte, 1 = short, 2 = long) */
325 16, /* bitsize */
b34976b6 326 FALSE, /* pc_relative */
5bd4f169
AM
327 0, /* bitpos */
328 complain_overflow_dont, /* complain_on_overflow */
805fc799 329 ppc64_elf_ha_reloc, /* special_function */
5bd4f169 330 "R_PPC64_ADDR16_HA", /* name */
b34976b6 331 FALSE, /* partial_inplace */
5bd4f169
AM
332 0, /* src_mask */
333 0xffff, /* dst_mask */
b34976b6 334 FALSE), /* pcrel_offset */
5bd4f169
AM
335
336 /* An absolute 16 bit branch; the lower two bits must be zero.
337 FIXME: we don't check that, we just clear them. */
338 HOWTO (R_PPC64_ADDR14, /* type */
339 0, /* rightshift */
340 2, /* size (0 = byte, 1 = short, 2 = long) */
341 16, /* bitsize */
b34976b6 342 FALSE, /* pc_relative */
5bd4f169
AM
343 0, /* bitpos */
344 complain_overflow_bitfield, /* complain_on_overflow */
2441e016 345 ppc64_elf_branch_reloc, /* special_function */
5bd4f169 346 "R_PPC64_ADDR14", /* name */
b34976b6 347 FALSE, /* partial_inplace */
d006db6c 348 0, /* src_mask */
f5e87a1d 349 0x0000fffc, /* dst_mask */
b34976b6 350 FALSE), /* pcrel_offset */
5bd4f169
AM
351
352 /* An absolute 16 bit branch, for which bit 10 should be set to
353 indicate that the branch is expected to be taken. The lower two
354 bits must be zero. */
355 HOWTO (R_PPC64_ADDR14_BRTAKEN, /* type */
356 0, /* rightshift */
357 2, /* size (0 = byte, 1 = short, 2 = long) */
358 16, /* bitsize */
b34976b6 359 FALSE, /* pc_relative */
5bd4f169
AM
360 0, /* bitpos */
361 complain_overflow_bitfield, /* complain_on_overflow */
805fc799 362 ppc64_elf_brtaken_reloc, /* special_function */
5bd4f169 363 "R_PPC64_ADDR14_BRTAKEN",/* name */
b34976b6 364 FALSE, /* partial_inplace */
d006db6c 365 0, /* src_mask */
f5e87a1d 366 0x0000fffc, /* dst_mask */
b34976b6 367 FALSE), /* pcrel_offset */
5bd4f169
AM
368
369 /* An absolute 16 bit branch, for which bit 10 should be set to
370 indicate that the branch is not expected to be taken. The lower
371 two bits must be zero. */
372 HOWTO (R_PPC64_ADDR14_BRNTAKEN, /* type */
373 0, /* rightshift */
374 2, /* size (0 = byte, 1 = short, 2 = long) */
375 16, /* bitsize */
b34976b6 376 FALSE, /* pc_relative */
5bd4f169
AM
377 0, /* bitpos */
378 complain_overflow_bitfield, /* complain_on_overflow */
805fc799 379 ppc64_elf_brtaken_reloc, /* special_function */
5bd4f169 380 "R_PPC64_ADDR14_BRNTAKEN",/* name */
b34976b6 381 FALSE, /* partial_inplace */
d006db6c 382 0, /* src_mask */
f5e87a1d 383 0x0000fffc, /* dst_mask */
b34976b6 384 FALSE), /* pcrel_offset */
5bd4f169
AM
385
386 /* A relative 26 bit branch; the lower two bits must be zero. */
387 HOWTO (R_PPC64_REL24, /* type */
388 0, /* rightshift */
389 2, /* size (0 = byte, 1 = short, 2 = long) */
390 26, /* bitsize */
b34976b6 391 TRUE, /* pc_relative */
5bd4f169
AM
392 0, /* bitpos */
393 complain_overflow_signed, /* complain_on_overflow */
2441e016 394 ppc64_elf_branch_reloc, /* special_function */
5bd4f169 395 "R_PPC64_REL24", /* name */
b34976b6 396 FALSE, /* partial_inplace */
d006db6c 397 0, /* src_mask */
f5e87a1d 398 0x03fffffc, /* dst_mask */
b34976b6 399 TRUE), /* pcrel_offset */
5bd4f169
AM
400
401 /* A relative 16 bit branch; the lower two bits must be zero. */
402 HOWTO (R_PPC64_REL14, /* type */
403 0, /* rightshift */
404 2, /* size (0 = byte, 1 = short, 2 = long) */
405 16, /* bitsize */
b34976b6 406 TRUE, /* pc_relative */
5bd4f169
AM
407 0, /* bitpos */
408 complain_overflow_signed, /* complain_on_overflow */
2441e016 409 ppc64_elf_branch_reloc, /* special_function */
5bd4f169 410 "R_PPC64_REL14", /* name */
b34976b6 411 FALSE, /* partial_inplace */
d006db6c 412 0, /* src_mask */
f5e87a1d 413 0x0000fffc, /* dst_mask */
b34976b6 414 TRUE), /* pcrel_offset */
5bd4f169
AM
415
416 /* A relative 16 bit branch. Bit 10 should be set to indicate that
417 the branch is expected to be taken. The lower two bits must be
418 zero. */
419 HOWTO (R_PPC64_REL14_BRTAKEN, /* type */
420 0, /* rightshift */
421 2, /* size (0 = byte, 1 = short, 2 = long) */
422 16, /* bitsize */
b34976b6 423 TRUE, /* pc_relative */
5bd4f169
AM
424 0, /* bitpos */
425 complain_overflow_signed, /* complain_on_overflow */
805fc799 426 ppc64_elf_brtaken_reloc, /* special_function */
5bd4f169 427 "R_PPC64_REL14_BRTAKEN", /* name */
b34976b6 428 FALSE, /* partial_inplace */
d006db6c 429 0, /* src_mask */
f5e87a1d 430 0x0000fffc, /* dst_mask */
b34976b6 431 TRUE), /* pcrel_offset */
5bd4f169
AM
432
433 /* A relative 16 bit branch. Bit 10 should be set to indicate that
434 the branch is not expected to be taken. The lower two bits must
435 be zero. */
436 HOWTO (R_PPC64_REL14_BRNTAKEN, /* type */
437 0, /* rightshift */
438 2, /* size (0 = byte, 1 = short, 2 = long) */
439 16, /* bitsize */
b34976b6 440 TRUE, /* pc_relative */
5bd4f169
AM
441 0, /* bitpos */
442 complain_overflow_signed, /* complain_on_overflow */
805fc799 443 ppc64_elf_brtaken_reloc, /* special_function */
5bd4f169 444 "R_PPC64_REL14_BRNTAKEN",/* name */
b34976b6 445 FALSE, /* partial_inplace */
d006db6c 446 0, /* src_mask */
f5e87a1d 447 0x0000fffc, /* dst_mask */
b34976b6 448 TRUE), /* pcrel_offset */
5bd4f169
AM
449
450 /* Like R_PPC64_ADDR16, but referring to the GOT table entry for the
451 symbol. */
452 HOWTO (R_PPC64_GOT16, /* type */
453 0, /* rightshift */
454 1, /* size (0 = byte, 1 = short, 2 = long) */
455 16, /* bitsize */
b34976b6 456 FALSE, /* pc_relative */
5bd4f169
AM
457 0, /* bitpos */
458 complain_overflow_signed, /* complain_on_overflow */
805fc799 459 ppc64_elf_unhandled_reloc, /* special_function */
5bd4f169 460 "R_PPC64_GOT16", /* name */
b34976b6 461 FALSE, /* partial_inplace */
5bd4f169
AM
462 0, /* src_mask */
463 0xffff, /* dst_mask */
b34976b6 464 FALSE), /* pcrel_offset */
5bd4f169
AM
465
466 /* Like R_PPC64_ADDR16_LO, but referring to the GOT table entry for
467 the symbol. */
468 HOWTO (R_PPC64_GOT16_LO, /* type */
469 0, /* rightshift */
470 1, /* size (0 = byte, 1 = short, 2 = long) */
471 16, /* bitsize */
b34976b6 472 FALSE, /* pc_relative */
5bd4f169
AM
473 0, /* bitpos */
474 complain_overflow_dont, /* complain_on_overflow */
805fc799 475 ppc64_elf_unhandled_reloc, /* special_function */
5bd4f169 476 "R_PPC64_GOT16_LO", /* name */
b34976b6 477 FALSE, /* partial_inplace */
5bd4f169
AM
478 0, /* src_mask */
479 0xffff, /* dst_mask */
b34976b6 480 FALSE), /* pcrel_offset */
5bd4f169
AM
481
482 /* Like R_PPC64_ADDR16_HI, but referring to the GOT table entry for
483 the symbol. */
484 HOWTO (R_PPC64_GOT16_HI, /* type */
485 16, /* rightshift */
486 1, /* size (0 = byte, 1 = short, 2 = long) */
487 16, /* bitsize */
b34976b6 488 FALSE, /* pc_relative */
5bd4f169
AM
489 0, /* bitpos */
490 complain_overflow_dont,/* complain_on_overflow */
805fc799 491 ppc64_elf_unhandled_reloc, /* special_function */
5bd4f169 492 "R_PPC64_GOT16_HI", /* name */
b34976b6 493 FALSE, /* partial_inplace */
5bd4f169
AM
494 0, /* src_mask */
495 0xffff, /* dst_mask */
b34976b6 496 FALSE), /* pcrel_offset */
5bd4f169
AM
497
498 /* Like R_PPC64_ADDR16_HA, but referring to the GOT table entry for
499 the symbol. */
500 HOWTO (R_PPC64_GOT16_HA, /* type */
501 16, /* rightshift */
502 1, /* size (0 = byte, 1 = short, 2 = long) */
503 16, /* bitsize */
b34976b6 504 FALSE, /* pc_relative */
5bd4f169
AM
505 0, /* bitpos */
506 complain_overflow_dont,/* complain_on_overflow */
805fc799 507 ppc64_elf_unhandled_reloc, /* special_function */
5bd4f169 508 "R_PPC64_GOT16_HA", /* name */
b34976b6 509 FALSE, /* partial_inplace */
5bd4f169
AM
510 0, /* src_mask */
511 0xffff, /* dst_mask */
b34976b6 512 FALSE), /* pcrel_offset */
5bd4f169
AM
513
514 /* This is used only by the dynamic linker. The symbol should exist
515 both in the object being run and in some shared library. The
516 dynamic linker copies the data addressed by the symbol from the
517 shared library into the object, because the object being
518 run has to have the data at some particular address. */
519 HOWTO (R_PPC64_COPY, /* type */
520 0, /* rightshift */
f5e87a1d
AM
521 0, /* this one is variable size */
522 0, /* bitsize */
b34976b6 523 FALSE, /* pc_relative */
5bd4f169 524 0, /* bitpos */
f5e87a1d
AM
525 complain_overflow_dont, /* complain_on_overflow */
526 ppc64_elf_unhandled_reloc, /* special_function */
5bd4f169 527 "R_PPC64_COPY", /* name */
b34976b6 528 FALSE, /* partial_inplace */
5bd4f169
AM
529 0, /* src_mask */
530 0, /* dst_mask */
b34976b6 531 FALSE), /* pcrel_offset */
5bd4f169
AM
532
533 /* Like R_PPC64_ADDR64, but used when setting global offset table
534 entries. */
535 HOWTO (R_PPC64_GLOB_DAT, /* type */
536 0, /* rightshift */
537 4, /* size (0=byte, 1=short, 2=long, 4=64 bits) */
538 64, /* bitsize */
b34976b6 539 FALSE, /* pc_relative */
5bd4f169
AM
540 0, /* bitpos */
541 complain_overflow_dont, /* complain_on_overflow */
805fc799 542 ppc64_elf_unhandled_reloc, /* special_function */
5bd4f169 543 "R_PPC64_GLOB_DAT", /* name */
b34976b6 544 FALSE, /* partial_inplace */
5bd4f169 545 0, /* src_mask */
f5e87a1d 546 ONES (64), /* dst_mask */
b34976b6 547 FALSE), /* pcrel_offset */
5bd4f169
AM
548
549 /* Created by the link editor. Marks a procedure linkage table
550 entry for a symbol. */
551 HOWTO (R_PPC64_JMP_SLOT, /* type */
552 0, /* rightshift */
553 0, /* size (0 = byte, 1 = short, 2 = long) */
554 0, /* bitsize */
b34976b6 555 FALSE, /* pc_relative */
5bd4f169
AM
556 0, /* bitpos */
557 complain_overflow_dont, /* complain_on_overflow */
805fc799 558 ppc64_elf_unhandled_reloc, /* special_function */
5bd4f169 559 "R_PPC64_JMP_SLOT", /* name */
b34976b6 560 FALSE, /* partial_inplace */
5bd4f169
AM
561 0, /* src_mask */
562 0, /* dst_mask */
b34976b6 563 FALSE), /* pcrel_offset */
5bd4f169
AM
564
565 /* Used only by the dynamic linker. When the object is run, this
566 doubleword64 is set to the load address of the object, plus the
567 addend. */
568 HOWTO (R_PPC64_RELATIVE, /* type */
569 0, /* rightshift */
570 4, /* size (0=byte, 1=short, 2=long, 4=64 bits) */
571 64, /* bitsize */
b34976b6 572 FALSE, /* pc_relative */
5bd4f169
AM
573 0, /* bitpos */
574 complain_overflow_dont, /* complain_on_overflow */
575 bfd_elf_generic_reloc, /* special_function */
576 "R_PPC64_RELATIVE", /* name */
b34976b6 577 FALSE, /* partial_inplace */
5bd4f169 578 0, /* src_mask */
f5e87a1d 579 ONES (64), /* dst_mask */
b34976b6 580 FALSE), /* pcrel_offset */
5bd4f169
AM
581
582 /* Like R_PPC64_ADDR32, but may be unaligned. */
583 HOWTO (R_PPC64_UADDR32, /* type */
584 0, /* rightshift */
585 2, /* size (0 = byte, 1 = short, 2 = long) */
586 32, /* bitsize */
b34976b6 587 FALSE, /* pc_relative */
5bd4f169
AM
588 0, /* bitpos */
589 complain_overflow_bitfield, /* complain_on_overflow */
590 bfd_elf_generic_reloc, /* special_function */
591 "R_PPC64_UADDR32", /* name */
b34976b6 592 FALSE, /* partial_inplace */
5bd4f169
AM
593 0, /* src_mask */
594 0xffffffff, /* dst_mask */
b34976b6 595 FALSE), /* pcrel_offset */
5bd4f169
AM
596
597 /* Like R_PPC64_ADDR16, but may be unaligned. */
598 HOWTO (R_PPC64_UADDR16, /* type */
599 0, /* rightshift */
600 1, /* size (0 = byte, 1 = short, 2 = long) */
601 16, /* bitsize */
b34976b6 602 FALSE, /* pc_relative */
5bd4f169
AM
603 0, /* bitpos */
604 complain_overflow_bitfield, /* complain_on_overflow */
605 bfd_elf_generic_reloc, /* special_function */
606 "R_PPC64_UADDR16", /* name */
b34976b6 607 FALSE, /* partial_inplace */
5bd4f169
AM
608 0, /* src_mask */
609 0xffff, /* dst_mask */
b34976b6 610 FALSE), /* pcrel_offset */
5bd4f169
AM
611
612 /* 32-bit PC relative. */
613 HOWTO (R_PPC64_REL32, /* type */
614 0, /* rightshift */
615 2, /* size (0 = byte, 1 = short, 2 = long) */
616 32, /* bitsize */
b34976b6 617 TRUE, /* pc_relative */
5bd4f169 618 0, /* bitpos */
cedb70c5 619 /* FIXME: Verify. Was complain_overflow_bitfield. */
5bd4f169
AM
620 complain_overflow_signed, /* complain_on_overflow */
621 bfd_elf_generic_reloc, /* special_function */
622 "R_PPC64_REL32", /* name */
b34976b6 623 FALSE, /* partial_inplace */
5bd4f169
AM
624 0, /* src_mask */
625 0xffffffff, /* dst_mask */
b34976b6 626 TRUE), /* pcrel_offset */
5bd4f169 627
10ed1bba 628 /* 32-bit relocation to the symbol's procedure linkage table. */
5bd4f169
AM
629 HOWTO (R_PPC64_PLT32, /* type */
630 0, /* rightshift */
631 2, /* size (0 = byte, 1 = short, 2 = long) */
632 32, /* bitsize */
b34976b6 633 FALSE, /* pc_relative */
5bd4f169
AM
634 0, /* bitpos */
635 complain_overflow_bitfield, /* complain_on_overflow */
805fc799 636 ppc64_elf_unhandled_reloc, /* special_function */
5bd4f169 637 "R_PPC64_PLT32", /* name */
b34976b6 638 FALSE, /* partial_inplace */
5bd4f169 639 0, /* src_mask */
f5e87a1d 640 0xffffffff, /* dst_mask */
b34976b6 641 FALSE), /* pcrel_offset */
5bd4f169
AM
642
643 /* 32-bit PC relative relocation to the symbol's procedure linkage table.
644 FIXME: R_PPC64_PLTREL32 not supported. */
645 HOWTO (R_PPC64_PLTREL32, /* type */
646 0, /* rightshift */
647 2, /* size (0 = byte, 1 = short, 2 = long) */
648 32, /* bitsize */
b34976b6 649 TRUE, /* pc_relative */
5bd4f169
AM
650 0, /* bitpos */
651 complain_overflow_signed, /* complain_on_overflow */
652 bfd_elf_generic_reloc, /* special_function */
653 "R_PPC64_PLTREL32", /* name */
b34976b6 654 FALSE, /* partial_inplace */
5bd4f169 655 0, /* src_mask */
f5e87a1d 656 0xffffffff, /* dst_mask */
b34976b6 657 TRUE), /* pcrel_offset */
5bd4f169
AM
658
659 /* Like R_PPC64_ADDR16_LO, but referring to the PLT table entry for
660 the symbol. */
661 HOWTO (R_PPC64_PLT16_LO, /* type */
662 0, /* rightshift */
663 1, /* size (0 = byte, 1 = short, 2 = long) */
664 16, /* bitsize */
b34976b6 665 FALSE, /* pc_relative */
5bd4f169
AM
666 0, /* bitpos */
667 complain_overflow_dont, /* complain_on_overflow */
805fc799 668 ppc64_elf_unhandled_reloc, /* special_function */
5bd4f169 669 "R_PPC64_PLT16_LO", /* name */
b34976b6 670 FALSE, /* partial_inplace */
5bd4f169
AM
671 0, /* src_mask */
672 0xffff, /* dst_mask */
b34976b6 673 FALSE), /* pcrel_offset */
5bd4f169
AM
674
675 /* Like R_PPC64_ADDR16_HI, but referring to the PLT table entry for
676 the symbol. */
677 HOWTO (R_PPC64_PLT16_HI, /* type */
678 16, /* rightshift */
679 1, /* size (0 = byte, 1 = short, 2 = long) */
680 16, /* bitsize */
b34976b6 681 FALSE, /* pc_relative */
5bd4f169
AM
682 0, /* bitpos */
683 complain_overflow_dont, /* complain_on_overflow */
805fc799 684 ppc64_elf_unhandled_reloc, /* special_function */
5bd4f169 685 "R_PPC64_PLT16_HI", /* name */
b34976b6 686 FALSE, /* partial_inplace */
5bd4f169
AM
687 0, /* src_mask */
688 0xffff, /* dst_mask */
b34976b6 689 FALSE), /* pcrel_offset */
5bd4f169
AM
690
691 /* Like R_PPC64_ADDR16_HA, but referring to the PLT table entry for
692 the symbol. */
693 HOWTO (R_PPC64_PLT16_HA, /* type */
694 16, /* rightshift */
695 1, /* size (0 = byte, 1 = short, 2 = long) */
696 16, /* bitsize */
b34976b6 697 FALSE, /* pc_relative */
5bd4f169
AM
698 0, /* bitpos */
699 complain_overflow_dont, /* complain_on_overflow */
805fc799 700 ppc64_elf_unhandled_reloc, /* special_function */
5bd4f169 701 "R_PPC64_PLT16_HA", /* name */
b34976b6 702 FALSE, /* partial_inplace */
5bd4f169
AM
703 0, /* src_mask */
704 0xffff, /* dst_mask */
b34976b6 705 FALSE), /* pcrel_offset */
5bd4f169 706
c061c2d8 707 /* 16-bit section relative relocation. */
5bd4f169
AM
708 HOWTO (R_PPC64_SECTOFF, /* type */
709 0, /* rightshift */
c061c2d8
AM
710 1, /* size (0 = byte, 1 = short, 2 = long) */
711 16, /* bitsize */
b34976b6 712 FALSE, /* pc_relative */
5bd4f169
AM
713 0, /* bitpos */
714 complain_overflow_bitfield, /* complain_on_overflow */
805fc799 715 ppc64_elf_sectoff_reloc, /* special_function */
5bd4f169 716 "R_PPC64_SECTOFF", /* name */
b34976b6 717 FALSE, /* partial_inplace */
5bd4f169 718 0, /* src_mask */
c061c2d8 719 0xffff, /* dst_mask */
b34976b6 720 FALSE), /* pcrel_offset */
5bd4f169 721
c061c2d8 722 /* Like R_PPC64_SECTOFF, but no overflow warning. */
5bd4f169
AM
723 HOWTO (R_PPC64_SECTOFF_LO, /* type */
724 0, /* rightshift */
725 1, /* size (0 = byte, 1 = short, 2 = long) */
726 16, /* bitsize */
b34976b6 727 FALSE, /* pc_relative */
5bd4f169
AM
728 0, /* bitpos */
729 complain_overflow_dont, /* complain_on_overflow */
805fc799 730 ppc64_elf_sectoff_reloc, /* special_function */
5bd4f169 731 "R_PPC64_SECTOFF_LO", /* name */
b34976b6 732 FALSE, /* partial_inplace */
5bd4f169
AM
733 0, /* src_mask */
734 0xffff, /* dst_mask */
b34976b6 735 FALSE), /* pcrel_offset */
5bd4f169
AM
736
737 /* 16-bit upper half section relative relocation. */
738 HOWTO (R_PPC64_SECTOFF_HI, /* type */
739 16, /* rightshift */
740 1, /* size (0 = byte, 1 = short, 2 = long) */
741 16, /* bitsize */
b34976b6 742 FALSE, /* pc_relative */
5bd4f169
AM
743 0, /* bitpos */
744 complain_overflow_dont, /* complain_on_overflow */
805fc799 745 ppc64_elf_sectoff_reloc, /* special_function */
5bd4f169 746 "R_PPC64_SECTOFF_HI", /* name */
b34976b6 747 FALSE, /* partial_inplace */
5bd4f169
AM
748 0, /* src_mask */
749 0xffff, /* dst_mask */
b34976b6 750 FALSE), /* pcrel_offset */
5bd4f169
AM
751
752 /* 16-bit upper half adjusted section relative relocation. */
753 HOWTO (R_PPC64_SECTOFF_HA, /* type */
754 16, /* rightshift */
755 1, /* size (0 = byte, 1 = short, 2 = long) */
756 16, /* bitsize */
b34976b6 757 FALSE, /* pc_relative */
5bd4f169
AM
758 0, /* bitpos */
759 complain_overflow_dont, /* complain_on_overflow */
805fc799 760 ppc64_elf_sectoff_ha_reloc, /* special_function */
5bd4f169 761 "R_PPC64_SECTOFF_HA", /* name */
b34976b6 762 FALSE, /* partial_inplace */
5bd4f169
AM
763 0, /* src_mask */
764 0xffff, /* dst_mask */
b34976b6 765 FALSE), /* pcrel_offset */
5bd4f169 766
04c9666a
AM
767 /* Like R_PPC64_REL24 without touching the two least significant bits. */
768 HOWTO (R_PPC64_REL30, /* type */
5bd4f169
AM
769 2, /* rightshift */
770 2, /* size (0 = byte, 1 = short, 2 = long) */
771 30, /* bitsize */
b34976b6 772 TRUE, /* pc_relative */
5bd4f169
AM
773 0, /* bitpos */
774 complain_overflow_dont, /* complain_on_overflow */
775 bfd_elf_generic_reloc, /* special_function */
04c9666a 776 "R_PPC64_REL30", /* name */
b34976b6 777 FALSE, /* partial_inplace */
d006db6c 778 0, /* src_mask */
5bd4f169 779 0xfffffffc, /* dst_mask */
b34976b6 780 TRUE), /* pcrel_offset */
5bd4f169
AM
781
782 /* Relocs in the 64-bit PowerPC ELF ABI, not in the 32-bit ABI. */
783
784 /* A standard 64-bit relocation. */
785 HOWTO (R_PPC64_ADDR64, /* type */
786 0, /* rightshift */
787 4, /* size (0=byte, 1=short, 2=long, 4=64 bits) */
788 64, /* bitsize */
b34976b6 789 FALSE, /* pc_relative */
5bd4f169
AM
790 0, /* bitpos */
791 complain_overflow_dont, /* complain_on_overflow */
792 bfd_elf_generic_reloc, /* special_function */
793 "R_PPC64_ADDR64", /* name */
b34976b6 794 FALSE, /* partial_inplace */
5bd4f169 795 0, /* src_mask */
f5e87a1d 796 ONES (64), /* dst_mask */
b34976b6 797 FALSE), /* pcrel_offset */
5bd4f169
AM
798
799 /* The bits 32-47 of an address. */
800 HOWTO (R_PPC64_ADDR16_HIGHER, /* type */
801 32, /* rightshift */
802 1, /* size (0 = byte, 1 = short, 2 = long) */
803 16, /* bitsize */
b34976b6 804 FALSE, /* pc_relative */
5bd4f169
AM
805 0, /* bitpos */
806 complain_overflow_dont, /* complain_on_overflow */
807 bfd_elf_generic_reloc, /* special_function */
808 "R_PPC64_ADDR16_HIGHER", /* name */
b34976b6 809 FALSE, /* partial_inplace */
5bd4f169
AM
810 0, /* src_mask */
811 0xffff, /* dst_mask */
b34976b6 812 FALSE), /* pcrel_offset */
5bd4f169
AM
813
814 /* The bits 32-47 of an address, plus 1 if the contents of the low
815 16 bits, treated as a signed number, is negative. */
816 HOWTO (R_PPC64_ADDR16_HIGHERA, /* type */
817 32, /* rightshift */
818 1, /* size (0 = byte, 1 = short, 2 = long) */
819 16, /* bitsize */
b34976b6 820 FALSE, /* pc_relative */
5bd4f169
AM
821 0, /* bitpos */
822 complain_overflow_dont, /* complain_on_overflow */
805fc799 823 ppc64_elf_ha_reloc, /* special_function */
5bd4f169 824 "R_PPC64_ADDR16_HIGHERA", /* name */
b34976b6 825 FALSE, /* partial_inplace */
5bd4f169
AM
826 0, /* src_mask */
827 0xffff, /* dst_mask */
b34976b6 828 FALSE), /* pcrel_offset */
5bd4f169
AM
829
830 /* The bits 48-63 of an address. */
831 HOWTO (R_PPC64_ADDR16_HIGHEST,/* type */
832 48, /* rightshift */
833 1, /* size (0 = byte, 1 = short, 2 = long) */
834 16, /* bitsize */
b34976b6 835 FALSE, /* pc_relative */
5bd4f169
AM
836 0, /* bitpos */
837 complain_overflow_dont, /* complain_on_overflow */
838 bfd_elf_generic_reloc, /* special_function */
839 "R_PPC64_ADDR16_HIGHEST", /* name */
b34976b6 840 FALSE, /* partial_inplace */
5bd4f169
AM
841 0, /* src_mask */
842 0xffff, /* dst_mask */
b34976b6 843 FALSE), /* pcrel_offset */
5bd4f169
AM
844
845 /* The bits 48-63 of an address, plus 1 if the contents of the low
846 16 bits, treated as a signed number, is negative. */
847 HOWTO (R_PPC64_ADDR16_HIGHESTA,/* type */
848 48, /* rightshift */
849 1, /* size (0 = byte, 1 = short, 2 = long) */
850 16, /* bitsize */
b34976b6 851 FALSE, /* pc_relative */
5bd4f169
AM
852 0, /* bitpos */
853 complain_overflow_dont, /* complain_on_overflow */
805fc799 854 ppc64_elf_ha_reloc, /* special_function */
5bd4f169 855 "R_PPC64_ADDR16_HIGHESTA", /* name */
b34976b6 856 FALSE, /* partial_inplace */
5bd4f169
AM
857 0, /* src_mask */
858 0xffff, /* dst_mask */
b34976b6 859 FALSE), /* pcrel_offset */
5bd4f169
AM
860
861 /* Like ADDR64, but may be unaligned. */
862 HOWTO (R_PPC64_UADDR64, /* type */
863 0, /* rightshift */
864 4, /* size (0=byte, 1=short, 2=long, 4=64 bits) */
865 64, /* bitsize */
b34976b6 866 FALSE, /* pc_relative */
5bd4f169
AM
867 0, /* bitpos */
868 complain_overflow_dont, /* complain_on_overflow */
869 bfd_elf_generic_reloc, /* special_function */
870 "R_PPC64_UADDR64", /* name */
b34976b6 871 FALSE, /* partial_inplace */
5bd4f169 872 0, /* src_mask */
f5e87a1d 873 ONES (64), /* dst_mask */
b34976b6 874 FALSE), /* pcrel_offset */
5bd4f169
AM
875
876 /* 64-bit relative relocation. */
877 HOWTO (R_PPC64_REL64, /* type */
878 0, /* rightshift */
879 4, /* size (0=byte, 1=short, 2=long, 4=64 bits) */
880 64, /* bitsize */
b34976b6 881 TRUE, /* pc_relative */
5bd4f169
AM
882 0, /* bitpos */
883 complain_overflow_dont, /* complain_on_overflow */
884 bfd_elf_generic_reloc, /* special_function */
885 "R_PPC64_REL64", /* name */
b34976b6 886 FALSE, /* partial_inplace */
5bd4f169 887 0, /* src_mask */
f5e87a1d 888 ONES (64), /* dst_mask */
b34976b6 889 TRUE), /* pcrel_offset */
5bd4f169 890
cedb70c5 891 /* 64-bit relocation to the symbol's procedure linkage table. */
5bd4f169
AM
892 HOWTO (R_PPC64_PLT64, /* type */
893 0, /* rightshift */
894 4, /* size (0=byte, 1=short, 2=long, 4=64 bits) */
895 64, /* bitsize */
b34976b6 896 FALSE, /* pc_relative */
5bd4f169
AM
897 0, /* bitpos */
898 complain_overflow_dont, /* complain_on_overflow */
805fc799 899 ppc64_elf_unhandled_reloc, /* special_function */
5bd4f169 900 "R_PPC64_PLT64", /* name */
b34976b6 901 FALSE, /* partial_inplace */
5bd4f169 902 0, /* src_mask */
f5e87a1d 903 ONES (64), /* dst_mask */
b34976b6 904 FALSE), /* pcrel_offset */
5bd4f169
AM
905
906 /* 64-bit PC relative relocation to the symbol's procedure linkage
907 table. */
908 /* FIXME: R_PPC64_PLTREL64 not supported. */
909 HOWTO (R_PPC64_PLTREL64, /* type */
910 0, /* rightshift */
911 4, /* size (0=byte, 1=short, 2=long, 4=64 bits) */
912 64, /* bitsize */
b34976b6 913 TRUE, /* pc_relative */
5bd4f169
AM
914 0, /* bitpos */
915 complain_overflow_dont, /* complain_on_overflow */
805fc799 916 ppc64_elf_unhandled_reloc, /* special_function */
5bd4f169 917 "R_PPC64_PLTREL64", /* name */
b34976b6 918 FALSE, /* partial_inplace */
5bd4f169 919 0, /* src_mask */
f5e87a1d 920 ONES (64), /* dst_mask */
b34976b6 921 TRUE), /* pcrel_offset */
5bd4f169
AM
922
923 /* 16 bit TOC-relative relocation. */
924
925 /* R_PPC64_TOC16 47 half16* S + A - .TOC. */
926 HOWTO (R_PPC64_TOC16, /* type */
927 0, /* rightshift */
928 1, /* size (0 = byte, 1 = short, 2 = long) */
929 16, /* bitsize */
b34976b6 930 FALSE, /* pc_relative */
5bd4f169
AM
931 0, /* bitpos */
932 complain_overflow_signed, /* complain_on_overflow */
805fc799 933 ppc64_elf_toc_reloc, /* special_function */
5bd4f169 934 "R_PPC64_TOC16", /* name */
b34976b6 935 FALSE, /* partial_inplace */
5bd4f169
AM
936 0, /* src_mask */
937 0xffff, /* dst_mask */
b34976b6 938 FALSE), /* pcrel_offset */
5bd4f169
AM
939
940 /* 16 bit TOC-relative relocation without overflow. */
941
942 /* R_PPC64_TOC16_LO 48 half16 #lo (S + A - .TOC.) */
943 HOWTO (R_PPC64_TOC16_LO, /* type */
944 0, /* rightshift */
945 1, /* size (0 = byte, 1 = short, 2 = long) */
946 16, /* bitsize */
b34976b6 947 FALSE, /* pc_relative */
5bd4f169
AM
948 0, /* bitpos */
949 complain_overflow_dont, /* complain_on_overflow */
805fc799 950 ppc64_elf_toc_reloc, /* special_function */
5bd4f169 951 "R_PPC64_TOC16_LO", /* name */
b34976b6 952 FALSE, /* partial_inplace */
5bd4f169
AM
953 0, /* src_mask */
954 0xffff, /* dst_mask */
b34976b6 955 FALSE), /* pcrel_offset */
5bd4f169
AM
956
957 /* 16 bit TOC-relative relocation, high 16 bits. */
958
959 /* R_PPC64_TOC16_HI 49 half16 #hi (S + A - .TOC.) */
960 HOWTO (R_PPC64_TOC16_HI, /* type */
961 16, /* rightshift */
962 1, /* size (0 = byte, 1 = short, 2 = long) */
963 16, /* bitsize */
b34976b6 964 FALSE, /* pc_relative */
5bd4f169
AM
965 0, /* bitpos */
966 complain_overflow_dont, /* complain_on_overflow */
805fc799 967 ppc64_elf_toc_reloc, /* special_function */
5bd4f169 968 "R_PPC64_TOC16_HI", /* name */
b34976b6 969 FALSE, /* partial_inplace */
5bd4f169
AM
970 0, /* src_mask */
971 0xffff, /* dst_mask */
b34976b6 972 FALSE), /* pcrel_offset */
5bd4f169
AM
973
974 /* 16 bit TOC-relative relocation, high 16 bits, plus 1 if the
975 contents of the low 16 bits, treated as a signed number, is
976 negative. */
977
978 /* R_PPC64_TOC16_HA 50 half16 #ha (S + A - .TOC.) */
979 HOWTO (R_PPC64_TOC16_HA, /* type */
980 16, /* rightshift */
981 1, /* size (0 = byte, 1 = short, 2 = long) */
982 16, /* bitsize */
b34976b6 983 FALSE, /* pc_relative */
5bd4f169
AM
984 0, /* bitpos */
985 complain_overflow_dont, /* complain_on_overflow */
805fc799 986 ppc64_elf_toc_ha_reloc, /* special_function */
5bd4f169 987 "R_PPC64_TOC16_HA", /* name */
b34976b6 988 FALSE, /* partial_inplace */
5bd4f169
AM
989 0, /* src_mask */
990 0xffff, /* dst_mask */
b34976b6 991 FALSE), /* pcrel_offset */
5bd4f169
AM
992
993 /* 64-bit relocation; insert value of TOC base (.TOC.). */
994
995 /* R_PPC64_TOC 51 doubleword64 .TOC. */
996 HOWTO (R_PPC64_TOC, /* type */
997 0, /* rightshift */
998 4, /* size (0=byte, 1=short, 2=long, 4=64 bits) */
999 64, /* bitsize */
b34976b6 1000 FALSE, /* pc_relative */
5bd4f169
AM
1001 0, /* bitpos */
1002 complain_overflow_bitfield, /* complain_on_overflow */
805fc799 1003 ppc64_elf_toc64_reloc, /* special_function */
5bd4f169 1004 "R_PPC64_TOC", /* name */
b34976b6 1005 FALSE, /* partial_inplace */
5bd4f169 1006 0, /* src_mask */
f5e87a1d 1007 ONES (64), /* dst_mask */
b34976b6 1008 FALSE), /* pcrel_offset */
5bd4f169
AM
1009
1010 /* Like R_PPC64_GOT16, but also informs the link editor that the
1011 value to relocate may (!) refer to a PLT entry which the link
1012 editor (a) may replace with the symbol value. If the link editor
1013 is unable to fully resolve the symbol, it may (b) create a PLT
1014 entry and store the address to the new PLT entry in the GOT.
1015 This permits lazy resolution of function symbols at run time.
1016 The link editor may also skip all of this and just (c) emit a
1017 R_PPC64_GLOB_DAT to tie the symbol to the GOT entry. */
1018 /* FIXME: R_PPC64_PLTGOT16 not implemented. */
1019 HOWTO (R_PPC64_PLTGOT16, /* type */
1020 0, /* rightshift */
1021 1, /* size (0 = byte, 1 = short, 2 = long) */
1022 16, /* bitsize */
b34976b6 1023 FALSE, /* pc_relative */
5bd4f169
AM
1024 0, /* bitpos */
1025 complain_overflow_signed, /* complain_on_overflow */
805fc799 1026 ppc64_elf_unhandled_reloc, /* special_function */
411e1bfb
AM
1027 "R_PPC64_PLTGOT16", /* name */
1028 FALSE, /* partial_inplace */
1029 0, /* src_mask */
1030 0xffff, /* dst_mask */
1031 FALSE), /* pcrel_offset */
1032
1033 /* Like R_PPC64_PLTGOT16, but without overflow. */
1034 /* FIXME: R_PPC64_PLTGOT16_LO not implemented. */
1035 HOWTO (R_PPC64_PLTGOT16_LO, /* type */
1036 0, /* rightshift */
1037 1, /* size (0 = byte, 1 = short, 2 = long) */
1038 16, /* bitsize */
1039 FALSE, /* pc_relative */
1040 0, /* bitpos */
1041 complain_overflow_dont, /* complain_on_overflow */
1042 ppc64_elf_unhandled_reloc, /* special_function */
1043 "R_PPC64_PLTGOT16_LO", /* name */
1044 FALSE, /* partial_inplace */
1045 0, /* src_mask */
1046 0xffff, /* dst_mask */
1047 FALSE), /* pcrel_offset */
1048
1049 /* Like R_PPC64_PLT_GOT16, but using bits 16-31 of the address. */
1050 /* FIXME: R_PPC64_PLTGOT16_HI not implemented. */
1051 HOWTO (R_PPC64_PLTGOT16_HI, /* type */
1052 16, /* rightshift */
1053 1, /* size (0 = byte, 1 = short, 2 = long) */
1054 16, /* bitsize */
1055 FALSE, /* pc_relative */
1056 0, /* bitpos */
1057 complain_overflow_dont, /* complain_on_overflow */
1058 ppc64_elf_unhandled_reloc, /* special_function */
1059 "R_PPC64_PLTGOT16_HI", /* name */
1060 FALSE, /* partial_inplace */
1061 0, /* src_mask */
1062 0xffff, /* dst_mask */
1063 FALSE), /* pcrel_offset */
1064
1065 /* Like R_PPC64_PLT_GOT16, but using bits 16-31 of the address, plus
1066 1 if the contents of the low 16 bits, treated as a signed number,
1067 is negative. */
1068 /* FIXME: R_PPC64_PLTGOT16_HA not implemented. */
1069 HOWTO (R_PPC64_PLTGOT16_HA, /* type */
1070 16, /* rightshift */
1071 1, /* size (0 = byte, 1 = short, 2 = long) */
1072 16, /* bitsize */
1073 FALSE, /* pc_relative */
1074 0, /* bitpos */
1075 complain_overflow_dont,/* complain_on_overflow */
1076 ppc64_elf_unhandled_reloc, /* special_function */
1077 "R_PPC64_PLTGOT16_HA", /* name */
1078 FALSE, /* partial_inplace */
1079 0, /* src_mask */
1080 0xffff, /* dst_mask */
1081 FALSE), /* pcrel_offset */
1082
1083 /* Like R_PPC64_ADDR16, but for instructions with a DS field. */
1084 HOWTO (R_PPC64_ADDR16_DS, /* type */
1085 0, /* rightshift */
1086 1, /* size (0 = byte, 1 = short, 2 = long) */
1087 16, /* bitsize */
1088 FALSE, /* pc_relative */
1089 0, /* bitpos */
1090 complain_overflow_bitfield, /* complain_on_overflow */
1091 bfd_elf_generic_reloc, /* special_function */
1092 "R_PPC64_ADDR16_DS", /* name */
1093 FALSE, /* partial_inplace */
1094 0, /* src_mask */
1095 0xfffc, /* dst_mask */
1096 FALSE), /* pcrel_offset */
1097
1098 /* Like R_PPC64_ADDR16_LO, but for instructions with a DS field. */
1099 HOWTO (R_PPC64_ADDR16_LO_DS, /* type */
1100 0, /* rightshift */
1101 1, /* size (0 = byte, 1 = short, 2 = long) */
1102 16, /* bitsize */
1103 FALSE, /* pc_relative */
1104 0, /* bitpos */
1105 complain_overflow_dont,/* complain_on_overflow */
1106 bfd_elf_generic_reloc, /* special_function */
1107 "R_PPC64_ADDR16_LO_DS",/* name */
1108 FALSE, /* partial_inplace */
1109 0, /* src_mask */
1110 0xfffc, /* dst_mask */
1111 FALSE), /* pcrel_offset */
1112
1113 /* Like R_PPC64_GOT16, but for instructions with a DS field. */
1114 HOWTO (R_PPC64_GOT16_DS, /* type */
1115 0, /* rightshift */
1116 1, /* size (0 = byte, 1 = short, 2 = long) */
1117 16, /* bitsize */
1118 FALSE, /* pc_relative */
1119 0, /* bitpos */
1120 complain_overflow_signed, /* complain_on_overflow */
1121 ppc64_elf_unhandled_reloc, /* special_function */
1122 "R_PPC64_GOT16_DS", /* name */
1123 FALSE, /* partial_inplace */
1124 0, /* src_mask */
1125 0xfffc, /* dst_mask */
1126 FALSE), /* pcrel_offset */
1127
1128 /* Like R_PPC64_GOT16_LO, but for instructions with a DS field. */
1129 HOWTO (R_PPC64_GOT16_LO_DS, /* type */
1130 0, /* rightshift */
1131 1, /* size (0 = byte, 1 = short, 2 = long) */
1132 16, /* bitsize */
1133 FALSE, /* pc_relative */
1134 0, /* bitpos */
1135 complain_overflow_dont, /* complain_on_overflow */
1136 ppc64_elf_unhandled_reloc, /* special_function */
1137 "R_PPC64_GOT16_LO_DS", /* name */
1138 FALSE, /* partial_inplace */
1139 0, /* src_mask */
1140 0xfffc, /* dst_mask */
1141 FALSE), /* pcrel_offset */
1142
1143 /* Like R_PPC64_PLT16_LO, but for instructions with a DS field. */
1144 HOWTO (R_PPC64_PLT16_LO_DS, /* type */
1145 0, /* rightshift */
1146 1, /* size (0 = byte, 1 = short, 2 = long) */
1147 16, /* bitsize */
1148 FALSE, /* pc_relative */
1149 0, /* bitpos */
1150 complain_overflow_dont, /* complain_on_overflow */
1151 ppc64_elf_unhandled_reloc, /* special_function */
1152 "R_PPC64_PLT16_LO_DS", /* name */
1153 FALSE, /* partial_inplace */
1154 0, /* src_mask */
1155 0xfffc, /* dst_mask */
1156 FALSE), /* pcrel_offset */
1157
1158 /* Like R_PPC64_SECTOFF, but for instructions with a DS field. */
1159 HOWTO (R_PPC64_SECTOFF_DS, /* type */
1160 0, /* rightshift */
1161 1, /* size (0 = byte, 1 = short, 2 = long) */
1162 16, /* bitsize */
1163 FALSE, /* pc_relative */
1164 0, /* bitpos */
1165 complain_overflow_bitfield, /* complain_on_overflow */
1166 ppc64_elf_sectoff_reloc, /* special_function */
1167 "R_PPC64_SECTOFF_DS", /* name */
1168 FALSE, /* partial_inplace */
1169 0, /* src_mask */
1170 0xfffc, /* dst_mask */
1171 FALSE), /* pcrel_offset */
1172
1173 /* Like R_PPC64_SECTOFF_LO, but for instructions with a DS field. */
1174 HOWTO (R_PPC64_SECTOFF_LO_DS, /* type */
1175 0, /* rightshift */
1176 1, /* size (0 = byte, 1 = short, 2 = long) */
1177 16, /* bitsize */
1178 FALSE, /* pc_relative */
1179 0, /* bitpos */
1180 complain_overflow_dont, /* complain_on_overflow */
1181 ppc64_elf_sectoff_reloc, /* special_function */
1182 "R_PPC64_SECTOFF_LO_DS",/* name */
1183 FALSE, /* partial_inplace */
1184 0, /* src_mask */
1185 0xfffc, /* dst_mask */
1186 FALSE), /* pcrel_offset */
1187
1188 /* Like R_PPC64_TOC16, but for instructions with a DS field. */
1189 HOWTO (R_PPC64_TOC16_DS, /* type */
1190 0, /* rightshift */
1191 1, /* size (0 = byte, 1 = short, 2 = long) */
1192 16, /* bitsize */
1193 FALSE, /* pc_relative */
1194 0, /* bitpos */
1195 complain_overflow_signed, /* complain_on_overflow */
1196 ppc64_elf_toc_reloc, /* special_function */
1197 "R_PPC64_TOC16_DS", /* name */
1198 FALSE, /* partial_inplace */
1199 0, /* src_mask */
1200 0xfffc, /* dst_mask */
1201 FALSE), /* pcrel_offset */
1202
1203 /* Like R_PPC64_TOC16_LO, but for instructions with a DS field. */
1204 HOWTO (R_PPC64_TOC16_LO_DS, /* type */
1205 0, /* rightshift */
1206 1, /* size (0 = byte, 1 = short, 2 = long) */
1207 16, /* bitsize */
1208 FALSE, /* pc_relative */
1209 0, /* bitpos */
1210 complain_overflow_dont, /* complain_on_overflow */
1211 ppc64_elf_toc_reloc, /* special_function */
1212 "R_PPC64_TOC16_LO_DS", /* name */
1213 FALSE, /* partial_inplace */
1214 0, /* src_mask */
1215 0xfffc, /* dst_mask */
1216 FALSE), /* pcrel_offset */
1217
1218 /* Like R_PPC64_PLTGOT16, but for instructions with a DS field. */
1219 /* FIXME: R_PPC64_PLTGOT16_DS not implemented. */
6bfdb61b 1220 HOWTO (R_PPC64_PLTGOT16_DS, /* type */
411e1bfb
AM
1221 0, /* rightshift */
1222 1, /* size (0 = byte, 1 = short, 2 = long) */
1223 16, /* bitsize */
1224 FALSE, /* pc_relative */
1225 0, /* bitpos */
1226 complain_overflow_signed, /* complain_on_overflow */
1227 ppc64_elf_unhandled_reloc, /* special_function */
1228 "R_PPC64_PLTGOT16_DS", /* name */
1229 FALSE, /* partial_inplace */
1230 0, /* src_mask */
1231 0xfffc, /* dst_mask */
1232 FALSE), /* pcrel_offset */
1233
1234 /* Like R_PPC64_PLTGOT16_LO, but for instructions with a DS field. */
1235 /* FIXME: R_PPC64_PLTGOT16_LO not implemented. */
1236 HOWTO (R_PPC64_PLTGOT16_LO_DS,/* type */
1237 0, /* rightshift */
1238 1, /* size (0 = byte, 1 = short, 2 = long) */
1239 16, /* bitsize */
1240 FALSE, /* pc_relative */
1241 0, /* bitpos */
1242 complain_overflow_dont, /* complain_on_overflow */
1243 ppc64_elf_unhandled_reloc, /* special_function */
1244 "R_PPC64_PLTGOT16_LO_DS",/* name */
1245 FALSE, /* partial_inplace */
1246 0, /* src_mask */
1247 0xfffc, /* dst_mask */
1248 FALSE), /* pcrel_offset */
1249
727fc41e 1250 /* Marker relocs for TLS. */
411e1bfb
AM
1251 HOWTO (R_PPC64_TLS,
1252 0, /* rightshift */
1253 2, /* size (0 = byte, 1 = short, 2 = long) */
1254 32, /* bitsize */
1255 FALSE, /* pc_relative */
1256 0, /* bitpos */
1257 complain_overflow_dont, /* complain_on_overflow */
1258 bfd_elf_generic_reloc, /* special_function */
1259 "R_PPC64_TLS", /* name */
1260 FALSE, /* partial_inplace */
1261 0, /* src_mask */
1262 0, /* dst_mask */
1263 FALSE), /* pcrel_offset */
1264
727fc41e
AM
1265 HOWTO (R_PPC64_TLSGD,
1266 0, /* rightshift */
1267 2, /* size (0 = byte, 1 = short, 2 = long) */
1268 32, /* bitsize */
1269 FALSE, /* pc_relative */
1270 0, /* bitpos */
1271 complain_overflow_dont, /* complain_on_overflow */
1272 bfd_elf_generic_reloc, /* special_function */
1273 "R_PPC64_TLSGD", /* name */
1274 FALSE, /* partial_inplace */
1275 0, /* src_mask */
1276 0, /* dst_mask */
1277 FALSE), /* pcrel_offset */
1278
1279 HOWTO (R_PPC64_TLSLD,
1280 0, /* rightshift */
1281 2, /* size (0 = byte, 1 = short, 2 = long) */
1282 32, /* bitsize */
1283 FALSE, /* pc_relative */
1284 0, /* bitpos */
1285 complain_overflow_dont, /* complain_on_overflow */
1286 bfd_elf_generic_reloc, /* special_function */
1287 "R_PPC64_TLSLD", /* name */
1288 FALSE, /* partial_inplace */
1289 0, /* src_mask */
1290 0, /* dst_mask */
1291 FALSE), /* pcrel_offset */
1292
3b421ab3
AM
1293 HOWTO (R_PPC64_TOCSAVE,
1294 0, /* rightshift */
1295 2, /* size (0 = byte, 1 = short, 2 = long) */
1296 32, /* bitsize */
1297 FALSE, /* pc_relative */
1298 0, /* bitpos */
1299 complain_overflow_dont, /* complain_on_overflow */
1300 bfd_elf_generic_reloc, /* special_function */
1301 "R_PPC64_TOCSAVE", /* name */
1302 FALSE, /* partial_inplace */
1303 0, /* src_mask */
1304 0, /* dst_mask */
1305 FALSE), /* pcrel_offset */
1306
411e1bfb
AM
1307 /* Computes the load module index of the load module that contains the
1308 definition of its TLS sym. */
1309 HOWTO (R_PPC64_DTPMOD64,
1310 0, /* rightshift */
1311 4, /* size (0 = byte, 1 = short, 2 = long) */
1312 64, /* bitsize */
1313 FALSE, /* pc_relative */
1314 0, /* bitpos */
1315 complain_overflow_dont, /* complain_on_overflow */
1316 ppc64_elf_unhandled_reloc, /* special_function */
1317 "R_PPC64_DTPMOD64", /* name */
1318 FALSE, /* partial_inplace */
1319 0, /* src_mask */
1320 ONES (64), /* dst_mask */
1321 FALSE), /* pcrel_offset */
1322
1323 /* Computes a dtv-relative displacement, the difference between the value
1324 of sym+add and the base address of the thread-local storage block that
1325 contains the definition of sym, minus 0x8000. */
1326 HOWTO (R_PPC64_DTPREL64,
1327 0, /* rightshift */
1328 4, /* size (0 = byte, 1 = short, 2 = long) */
1329 64, /* bitsize */
1330 FALSE, /* pc_relative */
1331 0, /* bitpos */
1332 complain_overflow_dont, /* complain_on_overflow */
1333 ppc64_elf_unhandled_reloc, /* special_function */
1334 "R_PPC64_DTPREL64", /* name */
1335 FALSE, /* partial_inplace */
1336 0, /* src_mask */
1337 ONES (64), /* dst_mask */
1338 FALSE), /* pcrel_offset */
1339
1340 /* A 16 bit dtprel reloc. */
1341 HOWTO (R_PPC64_DTPREL16,
1342 0, /* rightshift */
1343 1, /* size (0 = byte, 1 = short, 2 = long) */
1344 16, /* bitsize */
1345 FALSE, /* pc_relative */
1346 0, /* bitpos */
1347 complain_overflow_signed, /* complain_on_overflow */
1348 ppc64_elf_unhandled_reloc, /* special_function */
1349 "R_PPC64_DTPREL16", /* name */
1350 FALSE, /* partial_inplace */
1351 0, /* src_mask */
1352 0xffff, /* dst_mask */
1353 FALSE), /* pcrel_offset */
1354
1355 /* Like DTPREL16, but no overflow. */
1356 HOWTO (R_PPC64_DTPREL16_LO,
1357 0, /* rightshift */
1358 1, /* size (0 = byte, 1 = short, 2 = long) */
1359 16, /* bitsize */
1360 FALSE, /* pc_relative */
1361 0, /* bitpos */
1362 complain_overflow_dont, /* complain_on_overflow */
1363 ppc64_elf_unhandled_reloc, /* special_function */
1364 "R_PPC64_DTPREL16_LO", /* name */
1365 FALSE, /* partial_inplace */
1366 0, /* src_mask */
1367 0xffff, /* dst_mask */
1368 FALSE), /* pcrel_offset */
1369
1370 /* Like DTPREL16_LO, but next higher group of 16 bits. */
1371 HOWTO (R_PPC64_DTPREL16_HI,
1372 16, /* rightshift */
1373 1, /* size (0 = byte, 1 = short, 2 = long) */
1374 16, /* bitsize */
1375 FALSE, /* pc_relative */
1376 0, /* bitpos */
1377 complain_overflow_dont, /* complain_on_overflow */
1378 ppc64_elf_unhandled_reloc, /* special_function */
1379 "R_PPC64_DTPREL16_HI", /* name */
1380 FALSE, /* partial_inplace */
1381 0, /* src_mask */
1382 0xffff, /* dst_mask */
1383 FALSE), /* pcrel_offset */
1384
1385 /* Like DTPREL16_HI, but adjust for low 16 bits. */
1386 HOWTO (R_PPC64_DTPREL16_HA,
1387 16, /* rightshift */
1388 1, /* size (0 = byte, 1 = short, 2 = long) */
1389 16, /* bitsize */
1390 FALSE, /* pc_relative */
1391 0, /* bitpos */
1392 complain_overflow_dont, /* complain_on_overflow */
1393 ppc64_elf_unhandled_reloc, /* special_function */
1394 "R_PPC64_DTPREL16_HA", /* name */
1395 FALSE, /* partial_inplace */
1396 0, /* src_mask */
1397 0xffff, /* dst_mask */
1398 FALSE), /* pcrel_offset */
1399
1400 /* Like DTPREL16_HI, but next higher group of 16 bits. */
1401 HOWTO (R_PPC64_DTPREL16_HIGHER,
1402 32, /* rightshift */
1403 1, /* size (0 = byte, 1 = short, 2 = long) */
1404 16, /* bitsize */
1405 FALSE, /* pc_relative */
1406 0, /* bitpos */
1407 complain_overflow_dont, /* complain_on_overflow */
1408 ppc64_elf_unhandled_reloc, /* special_function */
1409 "R_PPC64_DTPREL16_HIGHER", /* name */
1410 FALSE, /* partial_inplace */
1411 0, /* src_mask */
1412 0xffff, /* dst_mask */
1413 FALSE), /* pcrel_offset */
1414
1415 /* Like DTPREL16_HIGHER, but adjust for low 16 bits. */
1416 HOWTO (R_PPC64_DTPREL16_HIGHERA,
1417 32, /* rightshift */
1418 1, /* size (0 = byte, 1 = short, 2 = long) */
1419 16, /* bitsize */
1420 FALSE, /* pc_relative */
1421 0, /* bitpos */
1422 complain_overflow_dont, /* complain_on_overflow */
1423 ppc64_elf_unhandled_reloc, /* special_function */
1424 "R_PPC64_DTPREL16_HIGHERA", /* name */
1425 FALSE, /* partial_inplace */
1426 0, /* src_mask */
1427 0xffff, /* dst_mask */
1428 FALSE), /* pcrel_offset */
1429
1430 /* Like DTPREL16_HIGHER, but next higher group of 16 bits. */
1431 HOWTO (R_PPC64_DTPREL16_HIGHEST,
1432 48, /* rightshift */
1433 1, /* size (0 = byte, 1 = short, 2 = long) */
1434 16, /* bitsize */
1435 FALSE, /* pc_relative */
1436 0, /* bitpos */
1437 complain_overflow_dont, /* complain_on_overflow */
1438 ppc64_elf_unhandled_reloc, /* special_function */
1439 "R_PPC64_DTPREL16_HIGHEST", /* name */
1440 FALSE, /* partial_inplace */
1441 0, /* src_mask */
1442 0xffff, /* dst_mask */
1443 FALSE), /* pcrel_offset */
1444
1445 /* Like DTPREL16_HIGHEST, but adjust for low 16 bits. */
1446 HOWTO (R_PPC64_DTPREL16_HIGHESTA,
1447 48, /* rightshift */
1448 1, /* size (0 = byte, 1 = short, 2 = long) */
1449 16, /* bitsize */
1450 FALSE, /* pc_relative */
1451 0, /* bitpos */
1452 complain_overflow_dont, /* complain_on_overflow */
1453 ppc64_elf_unhandled_reloc, /* special_function */
1454 "R_PPC64_DTPREL16_HIGHESTA", /* name */
1455 FALSE, /* partial_inplace */
1456 0, /* src_mask */
1457 0xffff, /* dst_mask */
1458 FALSE), /* pcrel_offset */
1459
1460 /* Like DTPREL16, but for insns with a DS field. */
1461 HOWTO (R_PPC64_DTPREL16_DS,
1462 0, /* rightshift */
1463 1, /* size (0 = byte, 1 = short, 2 = long) */
1464 16, /* bitsize */
1465 FALSE, /* pc_relative */
1466 0, /* bitpos */
1467 complain_overflow_signed, /* complain_on_overflow */
1468 ppc64_elf_unhandled_reloc, /* special_function */
1469 "R_PPC64_DTPREL16_DS", /* name */
1470 FALSE, /* partial_inplace */
1471 0, /* src_mask */
1472 0xfffc, /* dst_mask */
1473 FALSE), /* pcrel_offset */
1474
1475 /* Like DTPREL16_DS, but no overflow. */
1476 HOWTO (R_PPC64_DTPREL16_LO_DS,
1477 0, /* rightshift */
1478 1, /* size (0 = byte, 1 = short, 2 = long) */
1479 16, /* bitsize */
1480 FALSE, /* pc_relative */
1481 0, /* bitpos */
1482 complain_overflow_dont, /* complain_on_overflow */
1483 ppc64_elf_unhandled_reloc, /* special_function */
1484 "R_PPC64_DTPREL16_LO_DS", /* name */
1485 FALSE, /* partial_inplace */
1486 0, /* src_mask */
1487 0xfffc, /* dst_mask */
1488 FALSE), /* pcrel_offset */
1489
1490 /* Computes a tp-relative displacement, the difference between the value of
1491 sym+add and the value of the thread pointer (r13). */
1492 HOWTO (R_PPC64_TPREL64,
1493 0, /* rightshift */
1494 4, /* size (0 = byte, 1 = short, 2 = long) */
1495 64, /* bitsize */
1496 FALSE, /* pc_relative */
1497 0, /* bitpos */
1498 complain_overflow_dont, /* complain_on_overflow */
1499 ppc64_elf_unhandled_reloc, /* special_function */
1500 "R_PPC64_TPREL64", /* name */
1501 FALSE, /* partial_inplace */
1502 0, /* src_mask */
1503 ONES (64), /* dst_mask */
1504 FALSE), /* pcrel_offset */
1505
1506 /* A 16 bit tprel reloc. */
1507 HOWTO (R_PPC64_TPREL16,
1508 0, /* rightshift */
1509 1, /* size (0 = byte, 1 = short, 2 = long) */
1510 16, /* bitsize */
1511 FALSE, /* pc_relative */
1512 0, /* bitpos */
1513 complain_overflow_signed, /* complain_on_overflow */
1514 ppc64_elf_unhandled_reloc, /* special_function */
1515 "R_PPC64_TPREL16", /* name */
1516 FALSE, /* partial_inplace */
1517 0, /* src_mask */
1518 0xffff, /* dst_mask */
1519 FALSE), /* pcrel_offset */
1520
1521 /* Like TPREL16, but no overflow. */
1522 HOWTO (R_PPC64_TPREL16_LO,
1523 0, /* rightshift */
1524 1, /* size (0 = byte, 1 = short, 2 = long) */
1525 16, /* bitsize */
1526 FALSE, /* pc_relative */
1527 0, /* bitpos */
1528 complain_overflow_dont, /* complain_on_overflow */
1529 ppc64_elf_unhandled_reloc, /* special_function */
1530 "R_PPC64_TPREL16_LO", /* name */
1531 FALSE, /* partial_inplace */
1532 0, /* src_mask */
1533 0xffff, /* dst_mask */
1534 FALSE), /* pcrel_offset */
1535
1536 /* Like TPREL16_LO, but next higher group of 16 bits. */
1537 HOWTO (R_PPC64_TPREL16_HI,
1538 16, /* rightshift */
1539 1, /* size (0 = byte, 1 = short, 2 = long) */
1540 16, /* bitsize */
1541 FALSE, /* pc_relative */
1542 0, /* bitpos */
1543 complain_overflow_dont, /* complain_on_overflow */
1544 ppc64_elf_unhandled_reloc, /* special_function */
1545 "R_PPC64_TPREL16_HI", /* name */
1546 FALSE, /* partial_inplace */
1547 0, /* src_mask */
1548 0xffff, /* dst_mask */
1549 FALSE), /* pcrel_offset */
1550
1551 /* Like TPREL16_HI, but adjust for low 16 bits. */
1552 HOWTO (R_PPC64_TPREL16_HA,
1553 16, /* rightshift */
1554 1, /* size (0 = byte, 1 = short, 2 = long) */
1555 16, /* bitsize */
1556 FALSE, /* pc_relative */
1557 0, /* bitpos */
1558 complain_overflow_dont, /* complain_on_overflow */
1559 ppc64_elf_unhandled_reloc, /* special_function */
1560 "R_PPC64_TPREL16_HA", /* name */
1561 FALSE, /* partial_inplace */
1562 0, /* src_mask */
1563 0xffff, /* dst_mask */
1564 FALSE), /* pcrel_offset */
1565
1566 /* Like TPREL16_HI, but next higher group of 16 bits. */
1567 HOWTO (R_PPC64_TPREL16_HIGHER,
1568 32, /* rightshift */
1569 1, /* size (0 = byte, 1 = short, 2 = long) */
1570 16, /* bitsize */
1571 FALSE, /* pc_relative */
1572 0, /* bitpos */
1573 complain_overflow_dont, /* complain_on_overflow */
1574 ppc64_elf_unhandled_reloc, /* special_function */
1575 "R_PPC64_TPREL16_HIGHER", /* name */
1576 FALSE, /* partial_inplace */
1577 0, /* src_mask */
1578 0xffff, /* dst_mask */
1579 FALSE), /* pcrel_offset */
1580
1581 /* Like TPREL16_HIGHER, but adjust for low 16 bits. */
1582 HOWTO (R_PPC64_TPREL16_HIGHERA,
1583 32, /* rightshift */
1584 1, /* size (0 = byte, 1 = short, 2 = long) */
1585 16, /* bitsize */
1586 FALSE, /* pc_relative */
1587 0, /* bitpos */
1588 complain_overflow_dont, /* complain_on_overflow */
1589 ppc64_elf_unhandled_reloc, /* special_function */
1590 "R_PPC64_TPREL16_HIGHERA", /* name */
1591 FALSE, /* partial_inplace */
1592 0, /* src_mask */
1593 0xffff, /* dst_mask */
1594 FALSE), /* pcrel_offset */
1595
1596 /* Like TPREL16_HIGHER, but next higher group of 16 bits. */
1597 HOWTO (R_PPC64_TPREL16_HIGHEST,
1598 48, /* rightshift */
1599 1, /* size (0 = byte, 1 = short, 2 = long) */
1600 16, /* bitsize */
1601 FALSE, /* pc_relative */
1602 0, /* bitpos */
1603 complain_overflow_dont, /* complain_on_overflow */
1604 ppc64_elf_unhandled_reloc, /* special_function */
1605 "R_PPC64_TPREL16_HIGHEST", /* name */
1606 FALSE, /* partial_inplace */
1607 0, /* src_mask */
1608 0xffff, /* dst_mask */
1609 FALSE), /* pcrel_offset */
1610
1611 /* Like TPREL16_HIGHEST, but adjust for low 16 bits. */
1612 HOWTO (R_PPC64_TPREL16_HIGHESTA,
1613 48, /* rightshift */
1614 1, /* size (0 = byte, 1 = short, 2 = long) */
1615 16, /* bitsize */
1616 FALSE, /* pc_relative */
1617 0, /* bitpos */
1618 complain_overflow_dont, /* complain_on_overflow */
1619 ppc64_elf_unhandled_reloc, /* special_function */
1620 "R_PPC64_TPREL16_HIGHESTA", /* name */
1621 FALSE, /* partial_inplace */
1622 0, /* src_mask */
1623 0xffff, /* dst_mask */
1624 FALSE), /* pcrel_offset */
1625
1626 /* Like TPREL16, but for insns with a DS field. */
1627 HOWTO (R_PPC64_TPREL16_DS,
1628 0, /* rightshift */
1629 1, /* size (0 = byte, 1 = short, 2 = long) */
1630 16, /* bitsize */
1631 FALSE, /* pc_relative */
1632 0, /* bitpos */
1633 complain_overflow_signed, /* complain_on_overflow */
1634 ppc64_elf_unhandled_reloc, /* special_function */
1635 "R_PPC64_TPREL16_DS", /* name */
1636 FALSE, /* partial_inplace */
1637 0, /* src_mask */
1638 0xfffc, /* dst_mask */
1639 FALSE), /* pcrel_offset */
1640
1641 /* Like TPREL16_DS, but no overflow. */
1642 HOWTO (R_PPC64_TPREL16_LO_DS,
1643 0, /* rightshift */
1644 1, /* size (0 = byte, 1 = short, 2 = long) */
1645 16, /* bitsize */
1646 FALSE, /* pc_relative */
1647 0, /* bitpos */
1648 complain_overflow_dont, /* complain_on_overflow */
1649 ppc64_elf_unhandled_reloc, /* special_function */
1650 "R_PPC64_TPREL16_LO_DS", /* name */
1651 FALSE, /* partial_inplace */
1652 0, /* src_mask */
1653 0xfffc, /* dst_mask */
1654 FALSE), /* pcrel_offset */
1655
1656 /* Allocates two contiguous entries in the GOT to hold a tls_index structure,
1657 with values (sym+add)@dtpmod and (sym+add)@dtprel, and computes the offset
1658 to the first entry relative to the TOC base (r2). */
1659 HOWTO (R_PPC64_GOT_TLSGD16,
1660 0, /* rightshift */
1661 1, /* size (0 = byte, 1 = short, 2 = long) */
1662 16, /* bitsize */
1663 FALSE, /* pc_relative */
1664 0, /* bitpos */
1665 complain_overflow_signed, /* complain_on_overflow */
1666 ppc64_elf_unhandled_reloc, /* special_function */
1667 "R_PPC64_GOT_TLSGD16", /* name */
b34976b6 1668 FALSE, /* partial_inplace */
5bd4f169
AM
1669 0, /* src_mask */
1670 0xffff, /* dst_mask */
b34976b6 1671 FALSE), /* pcrel_offset */
5bd4f169 1672
411e1bfb
AM
1673 /* Like GOT_TLSGD16, but no overflow. */
1674 HOWTO (R_PPC64_GOT_TLSGD16_LO,
5bd4f169
AM
1675 0, /* rightshift */
1676 1, /* size (0 = byte, 1 = short, 2 = long) */
1677 16, /* bitsize */
b34976b6 1678 FALSE, /* pc_relative */
5bd4f169
AM
1679 0, /* bitpos */
1680 complain_overflow_dont, /* complain_on_overflow */
805fc799 1681 ppc64_elf_unhandled_reloc, /* special_function */
411e1bfb 1682 "R_PPC64_GOT_TLSGD16_LO", /* name */
b34976b6 1683 FALSE, /* partial_inplace */
5bd4f169
AM
1684 0, /* src_mask */
1685 0xffff, /* dst_mask */
b34976b6 1686 FALSE), /* pcrel_offset */
5bd4f169 1687
411e1bfb
AM
1688 /* Like GOT_TLSGD16_LO, but next higher group of 16 bits. */
1689 HOWTO (R_PPC64_GOT_TLSGD16_HI,
5bd4f169
AM
1690 16, /* rightshift */
1691 1, /* size (0 = byte, 1 = short, 2 = long) */
1692 16, /* bitsize */
b34976b6 1693 FALSE, /* pc_relative */
5bd4f169
AM
1694 0, /* bitpos */
1695 complain_overflow_dont, /* complain_on_overflow */
805fc799 1696 ppc64_elf_unhandled_reloc, /* special_function */
411e1bfb 1697 "R_PPC64_GOT_TLSGD16_HI", /* name */
b34976b6 1698 FALSE, /* partial_inplace */
5bd4f169
AM
1699 0, /* src_mask */
1700 0xffff, /* dst_mask */
b34976b6 1701 FALSE), /* pcrel_offset */
5bd4f169 1702
411e1bfb
AM
1703 /* Like GOT_TLSGD16_HI, but adjust for low 16 bits. */
1704 HOWTO (R_PPC64_GOT_TLSGD16_HA,
5bd4f169
AM
1705 16, /* rightshift */
1706 1, /* size (0 = byte, 1 = short, 2 = long) */
1707 16, /* bitsize */
b34976b6 1708 FALSE, /* pc_relative */
5bd4f169 1709 0, /* bitpos */
411e1bfb 1710 complain_overflow_dont, /* complain_on_overflow */
805fc799 1711 ppc64_elf_unhandled_reloc, /* special_function */
411e1bfb 1712 "R_PPC64_GOT_TLSGD16_HA", /* name */
b34976b6 1713 FALSE, /* partial_inplace */
5bd4f169
AM
1714 0, /* src_mask */
1715 0xffff, /* dst_mask */
b34976b6 1716 FALSE), /* pcrel_offset */
5bd4f169 1717
411e1bfb
AM
1718 /* Allocates two contiguous entries in the GOT to hold a tls_index structure,
1719 with values (sym+add)@dtpmod and zero, and computes the offset to the
1720 first entry relative to the TOC base (r2). */
1721 HOWTO (R_PPC64_GOT_TLSLD16,
5bd4f169
AM
1722 0, /* rightshift */
1723 1, /* size (0 = byte, 1 = short, 2 = long) */
1724 16, /* bitsize */
b34976b6 1725 FALSE, /* pc_relative */
5bd4f169 1726 0, /* bitpos */
411e1bfb
AM
1727 complain_overflow_signed, /* complain_on_overflow */
1728 ppc64_elf_unhandled_reloc, /* special_function */
1729 "R_PPC64_GOT_TLSLD16", /* name */
b34976b6 1730 FALSE, /* partial_inplace */
d006db6c 1731 0, /* src_mask */
411e1bfb 1732 0xffff, /* dst_mask */
b34976b6 1733 FALSE), /* pcrel_offset */
5bd4f169 1734
411e1bfb
AM
1735 /* Like GOT_TLSLD16, but no overflow. */
1736 HOWTO (R_PPC64_GOT_TLSLD16_LO,
5bd4f169
AM
1737 0, /* rightshift */
1738 1, /* size (0 = byte, 1 = short, 2 = long) */
1739 16, /* bitsize */
b34976b6 1740 FALSE, /* pc_relative */
5bd4f169 1741 0, /* bitpos */
411e1bfb
AM
1742 complain_overflow_dont, /* complain_on_overflow */
1743 ppc64_elf_unhandled_reloc, /* special_function */
1744 "R_PPC64_GOT_TLSLD16_LO", /* name */
b34976b6 1745 FALSE, /* partial_inplace */
d006db6c 1746 0, /* src_mask */
411e1bfb 1747 0xffff, /* dst_mask */
b34976b6 1748 FALSE), /* pcrel_offset */
5bd4f169 1749
411e1bfb
AM
1750 /* Like GOT_TLSLD16_LO, but next higher group of 16 bits. */
1751 HOWTO (R_PPC64_GOT_TLSLD16_HI,
1752 16, /* rightshift */
5bd4f169
AM
1753 1, /* size (0 = byte, 1 = short, 2 = long) */
1754 16, /* bitsize */
b34976b6 1755 FALSE, /* pc_relative */
5bd4f169 1756 0, /* bitpos */
411e1bfb 1757 complain_overflow_dont, /* complain_on_overflow */
805fc799 1758 ppc64_elf_unhandled_reloc, /* special_function */
411e1bfb 1759 "R_PPC64_GOT_TLSLD16_HI", /* name */
b34976b6 1760 FALSE, /* partial_inplace */
d006db6c 1761 0, /* src_mask */
411e1bfb 1762 0xffff, /* dst_mask */
b34976b6 1763 FALSE), /* pcrel_offset */
5bd4f169 1764
411e1bfb
AM
1765 /* Like GOT_TLSLD16_HI, but adjust for low 16 bits. */
1766 HOWTO (R_PPC64_GOT_TLSLD16_HA,
1767 16, /* rightshift */
5bd4f169
AM
1768 1, /* size (0 = byte, 1 = short, 2 = long) */
1769 16, /* bitsize */
b34976b6 1770 FALSE, /* pc_relative */
5bd4f169
AM
1771 0, /* bitpos */
1772 complain_overflow_dont, /* complain_on_overflow */
805fc799 1773 ppc64_elf_unhandled_reloc, /* special_function */
411e1bfb 1774 "R_PPC64_GOT_TLSLD16_HA", /* name */
b34976b6 1775 FALSE, /* partial_inplace */
d006db6c 1776 0, /* src_mask */
411e1bfb 1777 0xffff, /* dst_mask */
b34976b6 1778 FALSE), /* pcrel_offset */
5bd4f169 1779
411e1bfb
AM
1780 /* Allocates an entry in the GOT with value (sym+add)@dtprel, and computes
1781 the offset to the entry relative to the TOC base (r2). */
1782 HOWTO (R_PPC64_GOT_DTPREL16_DS,
5bd4f169
AM
1783 0, /* rightshift */
1784 1, /* size (0 = byte, 1 = short, 2 = long) */
1785 16, /* bitsize */
b34976b6 1786 FALSE, /* pc_relative */
5bd4f169 1787 0, /* bitpos */
411e1bfb 1788 complain_overflow_signed, /* complain_on_overflow */
805fc799 1789 ppc64_elf_unhandled_reloc, /* special_function */
411e1bfb 1790 "R_PPC64_GOT_DTPREL16_DS", /* name */
b34976b6 1791 FALSE, /* partial_inplace */
d006db6c 1792 0, /* src_mask */
5bd4f169 1793 0xfffc, /* dst_mask */
b34976b6 1794 FALSE), /* pcrel_offset */
5bd4f169 1795
411e1bfb
AM
1796 /* Like GOT_DTPREL16_DS, but no overflow. */
1797 HOWTO (R_PPC64_GOT_DTPREL16_LO_DS,
5bd4f169 1798 0, /* rightshift */
c061c2d8
AM
1799 1, /* size (0 = byte, 1 = short, 2 = long) */
1800 16, /* bitsize */
b34976b6 1801 FALSE, /* pc_relative */
5bd4f169 1802 0, /* bitpos */
411e1bfb
AM
1803 complain_overflow_dont, /* complain_on_overflow */
1804 ppc64_elf_unhandled_reloc, /* special_function */
1805 "R_PPC64_GOT_DTPREL16_LO_DS", /* name */
b34976b6 1806 FALSE, /* partial_inplace */
d006db6c 1807 0, /* src_mask */
c061c2d8 1808 0xfffc, /* dst_mask */
b34976b6 1809 FALSE), /* pcrel_offset */
5bd4f169 1810
411e1bfb
AM
1811 /* Like GOT_DTPREL16_LO_DS, but next higher group of 16 bits. */
1812 HOWTO (R_PPC64_GOT_DTPREL16_HI,
1813 16, /* rightshift */
5bd4f169
AM
1814 1, /* size (0 = byte, 1 = short, 2 = long) */
1815 16, /* bitsize */
b34976b6 1816 FALSE, /* pc_relative */
5bd4f169
AM
1817 0, /* bitpos */
1818 complain_overflow_dont, /* complain_on_overflow */
411e1bfb
AM
1819 ppc64_elf_unhandled_reloc, /* special_function */
1820 "R_PPC64_GOT_DTPREL16_HI", /* name */
b34976b6 1821 FALSE, /* partial_inplace */
d006db6c 1822 0, /* src_mask */
411e1bfb 1823 0xffff, /* dst_mask */
b34976b6 1824 FALSE), /* pcrel_offset */
5bd4f169 1825
411e1bfb
AM
1826 /* Like GOT_DTPREL16_HI, but adjust for low 16 bits. */
1827 HOWTO (R_PPC64_GOT_DTPREL16_HA,
1828 16, /* rightshift */
1829 1, /* size (0 = byte, 1 = short, 2 = long) */
1830 16, /* bitsize */
1831 FALSE, /* pc_relative */
1832 0, /* bitpos */
1833 complain_overflow_dont, /* complain_on_overflow */
1834 ppc64_elf_unhandled_reloc, /* special_function */
1835 "R_PPC64_GOT_DTPREL16_HA", /* name */
1836 FALSE, /* partial_inplace */
1837 0, /* src_mask */
1838 0xffff, /* dst_mask */
1839 FALSE), /* pcrel_offset */
1840
1841 /* Allocates an entry in the GOT with value (sym+add)@tprel, and computes the
1842 offset to the entry relative to the TOC base (r2). */
1843 HOWTO (R_PPC64_GOT_TPREL16_DS,
5bd4f169
AM
1844 0, /* rightshift */
1845 1, /* size (0 = byte, 1 = short, 2 = long) */
1846 16, /* bitsize */
b34976b6 1847 FALSE, /* pc_relative */
5bd4f169
AM
1848 0, /* bitpos */
1849 complain_overflow_signed, /* complain_on_overflow */
411e1bfb
AM
1850 ppc64_elf_unhandled_reloc, /* special_function */
1851 "R_PPC64_GOT_TPREL16_DS", /* name */
b34976b6 1852 FALSE, /* partial_inplace */
d006db6c 1853 0, /* src_mask */
ad8e1ba5 1854 0xfffc, /* dst_mask */
b34976b6 1855 FALSE), /* pcrel_offset */
5bd4f169 1856
411e1bfb
AM
1857 /* Like GOT_TPREL16_DS, but no overflow. */
1858 HOWTO (R_PPC64_GOT_TPREL16_LO_DS,
5bd4f169
AM
1859 0, /* rightshift */
1860 1, /* size (0 = byte, 1 = short, 2 = long) */
1861 16, /* bitsize */
b34976b6 1862 FALSE, /* pc_relative */
5bd4f169
AM
1863 0, /* bitpos */
1864 complain_overflow_dont, /* complain_on_overflow */
411e1bfb
AM
1865 ppc64_elf_unhandled_reloc, /* special_function */
1866 "R_PPC64_GOT_TPREL16_LO_DS", /* name */
b34976b6 1867 FALSE, /* partial_inplace */
d006db6c 1868 0, /* src_mask */
ad8e1ba5 1869 0xfffc, /* dst_mask */
b34976b6 1870 FALSE), /* pcrel_offset */
5bd4f169 1871
411e1bfb
AM
1872 /* Like GOT_TPREL16_LO_DS, but next higher group of 16 bits. */
1873 HOWTO (R_PPC64_GOT_TPREL16_HI,
1874 16, /* rightshift */
5bd4f169
AM
1875 1, /* size (0 = byte, 1 = short, 2 = long) */
1876 16, /* bitsize */
b34976b6 1877 FALSE, /* pc_relative */
5bd4f169 1878 0, /* bitpos */
411e1bfb 1879 complain_overflow_dont, /* complain_on_overflow */
805fc799 1880 ppc64_elf_unhandled_reloc, /* special_function */
411e1bfb 1881 "R_PPC64_GOT_TPREL16_HI", /* name */
b34976b6 1882 FALSE, /* partial_inplace */
d006db6c 1883 0, /* src_mask */
411e1bfb 1884 0xffff, /* dst_mask */
b34976b6 1885 FALSE), /* pcrel_offset */
5bd4f169 1886
411e1bfb
AM
1887 /* Like GOT_TPREL16_HI, but adjust for low 16 bits. */
1888 HOWTO (R_PPC64_GOT_TPREL16_HA,
1889 16, /* rightshift */
5bd4f169
AM
1890 1, /* size (0 = byte, 1 = short, 2 = long) */
1891 16, /* bitsize */
b34976b6 1892 FALSE, /* pc_relative */
5bd4f169
AM
1893 0, /* bitpos */
1894 complain_overflow_dont, /* complain_on_overflow */
805fc799 1895 ppc64_elf_unhandled_reloc, /* special_function */
411e1bfb 1896 "R_PPC64_GOT_TPREL16_HA", /* name */
b34976b6 1897 FALSE, /* partial_inplace */
d006db6c 1898 0, /* src_mask */
411e1bfb 1899 0xffff, /* dst_mask */
b34976b6 1900 FALSE), /* pcrel_offset */
5bd4f169 1901
25f23106
AM
1902 HOWTO (R_PPC64_JMP_IREL, /* type */
1903 0, /* rightshift */
1904 0, /* size (0=byte, 1=short, 2=long, 4=64 bits) */
1905 0, /* bitsize */
1906 FALSE, /* pc_relative */
1907 0, /* bitpos */
1908 complain_overflow_dont, /* complain_on_overflow */
1909 ppc64_elf_unhandled_reloc, /* special_function */
1910 "R_PPC64_JMP_IREL", /* name */
1911 FALSE, /* partial_inplace */
1912 0, /* src_mask */
1913 0, /* dst_mask */
1914 FALSE), /* pcrel_offset */
1915
e054468f
AM
1916 HOWTO (R_PPC64_IRELATIVE, /* type */
1917 0, /* rightshift */
1918 4, /* size (0=byte, 1=short, 2=long, 4=64 bits) */
1919 64, /* bitsize */
1920 FALSE, /* pc_relative */
1921 0, /* bitpos */
1922 complain_overflow_dont, /* complain_on_overflow */
1923 bfd_elf_generic_reloc, /* special_function */
1924 "R_PPC64_IRELATIVE", /* name */
1925 FALSE, /* partial_inplace */
1926 0, /* src_mask */
1927 ONES (64), /* dst_mask */
1928 FALSE), /* pcrel_offset */
1929
25f23106
AM
1930 /* A 16 bit relative relocation. */
1931 HOWTO (R_PPC64_REL16, /* type */
1932 0, /* rightshift */
1933 1, /* size (0 = byte, 1 = short, 2 = long) */
1934 16, /* bitsize */
1935 TRUE, /* pc_relative */
1936 0, /* bitpos */
1937 complain_overflow_bitfield, /* complain_on_overflow */
1938 bfd_elf_generic_reloc, /* special_function */
1939 "R_PPC64_REL16", /* name */
1940 FALSE, /* partial_inplace */
1941 0, /* src_mask */
1942 0xffff, /* dst_mask */
1943 TRUE), /* pcrel_offset */
1944
1945 /* A 16 bit relative relocation without overflow. */
1946 HOWTO (R_PPC64_REL16_LO, /* type */
1947 0, /* rightshift */
1948 1, /* size (0 = byte, 1 = short, 2 = long) */
1949 16, /* bitsize */
1950 TRUE, /* pc_relative */
1951 0, /* bitpos */
1952 complain_overflow_dont,/* complain_on_overflow */
1953 bfd_elf_generic_reloc, /* special_function */
1954 "R_PPC64_REL16_LO", /* name */
1955 FALSE, /* partial_inplace */
1956 0, /* src_mask */
1957 0xffff, /* dst_mask */
1958 TRUE), /* pcrel_offset */
1959
1960 /* The high order 16 bits of a relative address. */
1961 HOWTO (R_PPC64_REL16_HI, /* type */
1962 16, /* rightshift */
1963 1, /* size (0 = byte, 1 = short, 2 = long) */
1964 16, /* bitsize */
1965 TRUE, /* pc_relative */
1966 0, /* bitpos */
1967 complain_overflow_dont, /* complain_on_overflow */
1968 bfd_elf_generic_reloc, /* special_function */
1969 "R_PPC64_REL16_HI", /* name */
1970 FALSE, /* partial_inplace */
1971 0, /* src_mask */
1972 0xffff, /* dst_mask */
1973 TRUE), /* pcrel_offset */
1974
1975 /* The high order 16 bits of a relative address, plus 1 if the contents of
1976 the low 16 bits, treated as a signed number, is negative. */
1977 HOWTO (R_PPC64_REL16_HA, /* type */
1978 16, /* rightshift */
1979 1, /* size (0 = byte, 1 = short, 2 = long) */
1980 16, /* bitsize */
1981 TRUE, /* pc_relative */
1982 0, /* bitpos */
1983 complain_overflow_dont, /* complain_on_overflow */
1984 ppc64_elf_ha_reloc, /* special_function */
1985 "R_PPC64_REL16_HA", /* name */
1986 FALSE, /* partial_inplace */
1987 0, /* src_mask */
1988 0xffff, /* dst_mask */
1989 TRUE), /* pcrel_offset */
1990
5bd4f169
AM
1991 /* GNU extension to record C++ vtable hierarchy. */
1992 HOWTO (R_PPC64_GNU_VTINHERIT, /* type */
1993 0, /* rightshift */
1994 0, /* size (0 = byte, 1 = short, 2 = long) */
1995 0, /* bitsize */
b34976b6 1996 FALSE, /* pc_relative */
5bd4f169
AM
1997 0, /* bitpos */
1998 complain_overflow_dont, /* complain_on_overflow */
1999 NULL, /* special_function */
2000 "R_PPC64_GNU_VTINHERIT", /* name */
b34976b6 2001 FALSE, /* partial_inplace */
5bd4f169
AM
2002 0, /* src_mask */
2003 0, /* dst_mask */
b34976b6 2004 FALSE), /* pcrel_offset */
5bd4f169
AM
2005
2006 /* GNU extension to record C++ vtable member usage. */
2007 HOWTO (R_PPC64_GNU_VTENTRY, /* type */
2008 0, /* rightshift */
2009 0, /* size (0 = byte, 1 = short, 2 = long) */
2010 0, /* bitsize */
b34976b6 2011 FALSE, /* pc_relative */
5bd4f169
AM
2012 0, /* bitpos */
2013 complain_overflow_dont, /* complain_on_overflow */
2014 NULL, /* special_function */
2015 "R_PPC64_GNU_VTENTRY", /* name */
b34976b6 2016 FALSE, /* partial_inplace */
5bd4f169
AM
2017 0, /* src_mask */
2018 0, /* dst_mask */
b34976b6 2019 FALSE), /* pcrel_offset */
5bd4f169
AM
2020};
2021
2022\f
2023/* Initialize the ppc64_elf_howto_table, so that linear accesses can
2024 be done. */
2025
2026static void
4ce794b7 2027ppc_howto_init (void)
5bd4f169
AM
2028{
2029 unsigned int i, type;
2030
2031 for (i = 0;
2032 i < sizeof (ppc64_elf_howto_raw) / sizeof (ppc64_elf_howto_raw[0]);
2033 i++)
2034 {
2035 type = ppc64_elf_howto_raw[i].type;
2036 BFD_ASSERT (type < (sizeof (ppc64_elf_howto_table)
2037 / sizeof (ppc64_elf_howto_table[0])));
2038 ppc64_elf_howto_table[type] = &ppc64_elf_howto_raw[i];
2039 }
2040}
2041
2042static reloc_howto_type *
4ce794b7
AM
2043ppc64_elf_reloc_type_lookup (bfd *abfd ATTRIBUTE_UNUSED,
2044 bfd_reloc_code_real_type code)
5bd4f169 2045{
411e1bfb 2046 enum elf_ppc64_reloc_type r = R_PPC64_NONE;
5bd4f169
AM
2047
2048 if (!ppc64_elf_howto_table[R_PPC64_ADDR32])
2049 /* Initialize howto table if needed. */
2050 ppc_howto_init ();
2051
4ce794b7 2052 switch (code)
5bd4f169
AM
2053 {
2054 default:
4ce794b7 2055 return NULL;
5bd4f169 2056
411e1bfb
AM
2057 case BFD_RELOC_NONE: r = R_PPC64_NONE;
2058 break;
2059 case BFD_RELOC_32: r = R_PPC64_ADDR32;
2060 break;
2061 case BFD_RELOC_PPC_BA26: r = R_PPC64_ADDR24;
2062 break;
2063 case BFD_RELOC_16: r = R_PPC64_ADDR16;
2064 break;
2065 case BFD_RELOC_LO16: r = R_PPC64_ADDR16_LO;
2066 break;
2067 case BFD_RELOC_HI16: r = R_PPC64_ADDR16_HI;
2068 break;
2069 case BFD_RELOC_HI16_S: r = R_PPC64_ADDR16_HA;
5bd4f169 2070 break;
411e1bfb 2071 case BFD_RELOC_PPC_BA16: r = R_PPC64_ADDR14;
5bd4f169 2072 break;
411e1bfb 2073 case BFD_RELOC_PPC_BA16_BRTAKEN: r = R_PPC64_ADDR14_BRTAKEN;
5bd4f169 2074 break;
411e1bfb 2075 case BFD_RELOC_PPC_BA16_BRNTAKEN: r = R_PPC64_ADDR14_BRNTAKEN;
5bd4f169 2076 break;
411e1bfb 2077 case BFD_RELOC_PPC_B26: r = R_PPC64_REL24;
5bd4f169 2078 break;
411e1bfb 2079 case BFD_RELOC_PPC_B16: r = R_PPC64_REL14;
5bd4f169 2080 break;
411e1bfb 2081 case BFD_RELOC_PPC_B16_BRTAKEN: r = R_PPC64_REL14_BRTAKEN;
5bd4f169 2082 break;
411e1bfb 2083 case BFD_RELOC_PPC_B16_BRNTAKEN: r = R_PPC64_REL14_BRNTAKEN;
5bd4f169 2084 break;
411e1bfb 2085 case BFD_RELOC_16_GOTOFF: r = R_PPC64_GOT16;
5bd4f169 2086 break;
411e1bfb 2087 case BFD_RELOC_LO16_GOTOFF: r = R_PPC64_GOT16_LO;
5bd4f169 2088 break;
411e1bfb 2089 case BFD_RELOC_HI16_GOTOFF: r = R_PPC64_GOT16_HI;
5bd4f169 2090 break;
411e1bfb 2091 case BFD_RELOC_HI16_S_GOTOFF: r = R_PPC64_GOT16_HA;
5bd4f169 2092 break;
411e1bfb 2093 case BFD_RELOC_PPC_COPY: r = R_PPC64_COPY;
5bd4f169 2094 break;
411e1bfb 2095 case BFD_RELOC_PPC_GLOB_DAT: r = R_PPC64_GLOB_DAT;
5bd4f169 2096 break;
411e1bfb 2097 case BFD_RELOC_32_PCREL: r = R_PPC64_REL32;
5bd4f169 2098 break;
411e1bfb 2099 case BFD_RELOC_32_PLTOFF: r = R_PPC64_PLT32;
5bd4f169 2100 break;
411e1bfb 2101 case BFD_RELOC_32_PLT_PCREL: r = R_PPC64_PLTREL32;
5bd4f169 2102 break;
411e1bfb 2103 case BFD_RELOC_LO16_PLTOFF: r = R_PPC64_PLT16_LO;
5bd4f169 2104 break;
411e1bfb 2105 case BFD_RELOC_HI16_PLTOFF: r = R_PPC64_PLT16_HI;
5bd4f169 2106 break;
411e1bfb 2107 case BFD_RELOC_HI16_S_PLTOFF: r = R_PPC64_PLT16_HA;
5bd4f169 2108 break;
411e1bfb 2109 case BFD_RELOC_16_BASEREL: r = R_PPC64_SECTOFF;
5bd4f169 2110 break;
411e1bfb 2111 case BFD_RELOC_LO16_BASEREL: r = R_PPC64_SECTOFF_LO;
5bd4f169 2112 break;
411e1bfb 2113 case BFD_RELOC_HI16_BASEREL: r = R_PPC64_SECTOFF_HI;
5bd4f169 2114 break;
411e1bfb 2115 case BFD_RELOC_HI16_S_BASEREL: r = R_PPC64_SECTOFF_HA;
5bd4f169 2116 break;
411e1bfb 2117 case BFD_RELOC_CTOR: r = R_PPC64_ADDR64;
5bd4f169 2118 break;
411e1bfb 2119 case BFD_RELOC_64: r = R_PPC64_ADDR64;
5bd4f169 2120 break;
411e1bfb 2121 case BFD_RELOC_PPC64_HIGHER: r = R_PPC64_ADDR16_HIGHER;
5bd4f169 2122 break;
411e1bfb 2123 case BFD_RELOC_PPC64_HIGHER_S: r = R_PPC64_ADDR16_HIGHERA;
5bd4f169 2124 break;
411e1bfb 2125 case BFD_RELOC_PPC64_HIGHEST: r = R_PPC64_ADDR16_HIGHEST;
5bd4f169 2126 break;
411e1bfb 2127 case BFD_RELOC_PPC64_HIGHEST_S: r = R_PPC64_ADDR16_HIGHESTA;
5bd4f169 2128 break;
411e1bfb 2129 case BFD_RELOC_64_PCREL: r = R_PPC64_REL64;
5bd4f169 2130 break;
411e1bfb 2131 case BFD_RELOC_64_PLTOFF: r = R_PPC64_PLT64;
5bd4f169 2132 break;
411e1bfb 2133 case BFD_RELOC_64_PLT_PCREL: r = R_PPC64_PLTREL64;
5bd4f169 2134 break;
411e1bfb 2135 case BFD_RELOC_PPC_TOC16: r = R_PPC64_TOC16;
5bd4f169 2136 break;
411e1bfb 2137 case BFD_RELOC_PPC64_TOC16_LO: r = R_PPC64_TOC16_LO;
5bd4f169 2138 break;
411e1bfb 2139 case BFD_RELOC_PPC64_TOC16_HI: r = R_PPC64_TOC16_HI;
5bd4f169 2140 break;
411e1bfb 2141 case BFD_RELOC_PPC64_TOC16_HA: r = R_PPC64_TOC16_HA;
5bd4f169 2142 break;
411e1bfb 2143 case BFD_RELOC_PPC64_TOC: r = R_PPC64_TOC;
5bd4f169 2144 break;
411e1bfb 2145 case BFD_RELOC_PPC64_PLTGOT16: r = R_PPC64_PLTGOT16;
5bd4f169 2146 break;
411e1bfb 2147 case BFD_RELOC_PPC64_PLTGOT16_LO: r = R_PPC64_PLTGOT16_LO;
5bd4f169 2148 break;
411e1bfb 2149 case BFD_RELOC_PPC64_PLTGOT16_HI: r = R_PPC64_PLTGOT16_HI;
5bd4f169 2150 break;
411e1bfb 2151 case BFD_RELOC_PPC64_PLTGOT16_HA: r = R_PPC64_PLTGOT16_HA;
5bd4f169 2152 break;
411e1bfb 2153 case BFD_RELOC_PPC64_ADDR16_DS: r = R_PPC64_ADDR16_DS;
5bd4f169 2154 break;
411e1bfb 2155 case BFD_RELOC_PPC64_ADDR16_LO_DS: r = R_PPC64_ADDR16_LO_DS;
5bd4f169 2156 break;
411e1bfb 2157 case BFD_RELOC_PPC64_GOT16_DS: r = R_PPC64_GOT16_DS;
5bd4f169 2158 break;
411e1bfb 2159 case BFD_RELOC_PPC64_GOT16_LO_DS: r = R_PPC64_GOT16_LO_DS;
5bd4f169 2160 break;
411e1bfb 2161 case BFD_RELOC_PPC64_PLT16_LO_DS: r = R_PPC64_PLT16_LO_DS;
5bd4f169 2162 break;
411e1bfb 2163 case BFD_RELOC_PPC64_SECTOFF_DS: r = R_PPC64_SECTOFF_DS;
5bd4f169 2164 break;
411e1bfb 2165 case BFD_RELOC_PPC64_SECTOFF_LO_DS: r = R_PPC64_SECTOFF_LO_DS;
5bd4f169 2166 break;
411e1bfb 2167 case BFD_RELOC_PPC64_TOC16_DS: r = R_PPC64_TOC16_DS;
5bd4f169 2168 break;
411e1bfb 2169 case BFD_RELOC_PPC64_TOC16_LO_DS: r = R_PPC64_TOC16_LO_DS;
5bd4f169 2170 break;
411e1bfb 2171 case BFD_RELOC_PPC64_PLTGOT16_DS: r = R_PPC64_PLTGOT16_DS;
5bd4f169 2172 break;
411e1bfb 2173 case BFD_RELOC_PPC64_PLTGOT16_LO_DS: r = R_PPC64_PLTGOT16_LO_DS;
5bd4f169 2174 break;
411e1bfb 2175 case BFD_RELOC_PPC_TLS: r = R_PPC64_TLS;
5bd4f169 2176 break;
727fc41e
AM
2177 case BFD_RELOC_PPC_TLSGD: r = R_PPC64_TLSGD;
2178 break;
2179 case BFD_RELOC_PPC_TLSLD: r = R_PPC64_TLSLD;
2180 break;
411e1bfb 2181 case BFD_RELOC_PPC_DTPMOD: r = R_PPC64_DTPMOD64;
5bd4f169 2182 break;
411e1bfb 2183 case BFD_RELOC_PPC_TPREL16: r = R_PPC64_TPREL16;
5bd4f169 2184 break;
411e1bfb 2185 case BFD_RELOC_PPC_TPREL16_LO: r = R_PPC64_TPREL16_LO;
5bd4f169 2186 break;
411e1bfb 2187 case BFD_RELOC_PPC_TPREL16_HI: r = R_PPC64_TPREL16_HI;
5bd4f169 2188 break;
411e1bfb 2189 case BFD_RELOC_PPC_TPREL16_HA: r = R_PPC64_TPREL16_HA;
5bd4f169 2190 break;
411e1bfb 2191 case BFD_RELOC_PPC_TPREL: r = R_PPC64_TPREL64;
5bd4f169 2192 break;
411e1bfb
AM
2193 case BFD_RELOC_PPC_DTPREL16: r = R_PPC64_DTPREL16;
2194 break;
2195 case BFD_RELOC_PPC_DTPREL16_LO: r = R_PPC64_DTPREL16_LO;
2196 break;
2197 case BFD_RELOC_PPC_DTPREL16_HI: r = R_PPC64_DTPREL16_HI;
2198 break;
2199 case BFD_RELOC_PPC_DTPREL16_HA: r = R_PPC64_DTPREL16_HA;
2200 break;
2201 case BFD_RELOC_PPC_DTPREL: r = R_PPC64_DTPREL64;
2202 break;
2203 case BFD_RELOC_PPC_GOT_TLSGD16: r = R_PPC64_GOT_TLSGD16;
2204 break;
2205 case BFD_RELOC_PPC_GOT_TLSGD16_LO: r = R_PPC64_GOT_TLSGD16_LO;
2206 break;
2207 case BFD_RELOC_PPC_GOT_TLSGD16_HI: r = R_PPC64_GOT_TLSGD16_HI;
2208 break;
2209 case BFD_RELOC_PPC_GOT_TLSGD16_HA: r = R_PPC64_GOT_TLSGD16_HA;
2210 break;
2211 case BFD_RELOC_PPC_GOT_TLSLD16: r = R_PPC64_GOT_TLSLD16;
2212 break;
2213 case BFD_RELOC_PPC_GOT_TLSLD16_LO: r = R_PPC64_GOT_TLSLD16_LO;
2214 break;
2215 case BFD_RELOC_PPC_GOT_TLSLD16_HI: r = R_PPC64_GOT_TLSLD16_HI;
2216 break;
2217 case BFD_RELOC_PPC_GOT_TLSLD16_HA: r = R_PPC64_GOT_TLSLD16_HA;
2218 break;
2219 case BFD_RELOC_PPC_GOT_TPREL16: r = R_PPC64_GOT_TPREL16_DS;
2220 break;
2221 case BFD_RELOC_PPC_GOT_TPREL16_LO: r = R_PPC64_GOT_TPREL16_LO_DS;
2222 break;
2223 case BFD_RELOC_PPC_GOT_TPREL16_HI: r = R_PPC64_GOT_TPREL16_HI;
2224 break;
2225 case BFD_RELOC_PPC_GOT_TPREL16_HA: r = R_PPC64_GOT_TPREL16_HA;
2226 break;
2227 case BFD_RELOC_PPC_GOT_DTPREL16: r = R_PPC64_GOT_DTPREL16_DS;
2228 break;
2229 case BFD_RELOC_PPC_GOT_DTPREL16_LO: r = R_PPC64_GOT_DTPREL16_LO_DS;
2230 break;
2231 case BFD_RELOC_PPC_GOT_DTPREL16_HI: r = R_PPC64_GOT_DTPREL16_HI;
2232 break;
2233 case BFD_RELOC_PPC_GOT_DTPREL16_HA: r = R_PPC64_GOT_DTPREL16_HA;
2234 break;
2235 case BFD_RELOC_PPC64_TPREL16_DS: r = R_PPC64_TPREL16_DS;
2236 break;
2237 case BFD_RELOC_PPC64_TPREL16_LO_DS: r = R_PPC64_TPREL16_LO_DS;
2238 break;
2239 case BFD_RELOC_PPC64_TPREL16_HIGHER: r = R_PPC64_TPREL16_HIGHER;
2240 break;
2241 case BFD_RELOC_PPC64_TPREL16_HIGHERA: r = R_PPC64_TPREL16_HIGHERA;
2242 break;
2243 case BFD_RELOC_PPC64_TPREL16_HIGHEST: r = R_PPC64_TPREL16_HIGHEST;
2244 break;
2245 case BFD_RELOC_PPC64_TPREL16_HIGHESTA: r = R_PPC64_TPREL16_HIGHESTA;
2246 break;
2247 case BFD_RELOC_PPC64_DTPREL16_DS: r = R_PPC64_DTPREL16_DS;
2248 break;
2249 case BFD_RELOC_PPC64_DTPREL16_LO_DS: r = R_PPC64_DTPREL16_LO_DS;
2250 break;
2251 case BFD_RELOC_PPC64_DTPREL16_HIGHER: r = R_PPC64_DTPREL16_HIGHER;
2252 break;
2253 case BFD_RELOC_PPC64_DTPREL16_HIGHERA: r = R_PPC64_DTPREL16_HIGHERA;
2254 break;
2255 case BFD_RELOC_PPC64_DTPREL16_HIGHEST: r = R_PPC64_DTPREL16_HIGHEST;
2256 break;
2257 case BFD_RELOC_PPC64_DTPREL16_HIGHESTA: r = R_PPC64_DTPREL16_HIGHESTA;
2258 break;
25f23106
AM
2259 case BFD_RELOC_16_PCREL: r = R_PPC64_REL16;
2260 break;
2261 case BFD_RELOC_LO16_PCREL: r = R_PPC64_REL16_LO;
2262 break;
2263 case BFD_RELOC_HI16_PCREL: r = R_PPC64_REL16_HI;
2264 break;
2265 case BFD_RELOC_HI16_S_PCREL: r = R_PPC64_REL16_HA;
2266 break;
411e1bfb
AM
2267 case BFD_RELOC_VTABLE_INHERIT: r = R_PPC64_GNU_VTINHERIT;
2268 break;
2269 case BFD_RELOC_VTABLE_ENTRY: r = R_PPC64_GNU_VTENTRY;
5bd4f169
AM
2270 break;
2271 }
2272
4ce794b7 2273 return ppc64_elf_howto_table[r];
5bd4f169
AM
2274};
2275
157090f7
AM
2276static reloc_howto_type *
2277ppc64_elf_reloc_name_lookup (bfd *abfd ATTRIBUTE_UNUSED,
2278 const char *r_name)
2279{
2280 unsigned int i;
2281
2282 for (i = 0;
2283 i < sizeof (ppc64_elf_howto_raw) / sizeof (ppc64_elf_howto_raw[0]);
2284 i++)
2285 if (ppc64_elf_howto_raw[i].name != NULL
2286 && strcasecmp (ppc64_elf_howto_raw[i].name, r_name) == 0)
2287 return &ppc64_elf_howto_raw[i];
2288
2289 return NULL;
2290}
2291
5bd4f169
AM
2292/* Set the howto pointer for a PowerPC ELF reloc. */
2293
2294static void
4ce794b7
AM
2295ppc64_elf_info_to_howto (bfd *abfd ATTRIBUTE_UNUSED, arelent *cache_ptr,
2296 Elf_Internal_Rela *dst)
5bd4f169 2297{
65f38f15
AM
2298 unsigned int type;
2299
ef60b7ff 2300 /* Initialize howto table if needed. */
5bd4f169 2301 if (!ppc64_elf_howto_table[R_PPC64_ADDR32])
5bd4f169
AM
2302 ppc_howto_init ();
2303
65f38f15 2304 type = ELF64_R_TYPE (dst->r_info);
d0fb9a8d
JJ
2305 if (type >= (sizeof (ppc64_elf_howto_table)
2306 / sizeof (ppc64_elf_howto_table[0])))
2307 {
2308 (*_bfd_error_handler) (_("%B: invalid relocation type %d"),
3ec2b351
NC
2309 abfd, (int) type);
2310 type = R_PPC64_NONE;
d0fb9a8d 2311 }
65f38f15 2312 cache_ptr->howto = ppc64_elf_howto_table[type];
5bd4f169
AM
2313}
2314
04c9666a 2315/* Handle the R_PPC64_ADDR16_HA and similar relocs. */
5bd4f169
AM
2316
2317static bfd_reloc_status_type
4ce794b7
AM
2318ppc64_elf_ha_reloc (bfd *abfd, arelent *reloc_entry, asymbol *symbol,
2319 void *data, asection *input_section,
2320 bfd *output_bfd, char **error_message)
5bd4f169 2321{
805fc799
AM
2322 /* If this is a relocatable link (output_bfd test tells us), just
2323 call the generic function. Any adjustment will be done at final
2324 link time. */
2325 if (output_bfd != NULL)
cedb70c5 2326 return bfd_elf_generic_reloc (abfd, reloc_entry, symbol, data,
805fc799
AM
2327 input_section, output_bfd, error_message);
2328
2329 /* Adjust the addend for sign extension of the low 16 bits.
2330 We won't actually be using the low 16 bits, so trashing them
2331 doesn't matter. */
2332 reloc_entry->addend += 0x8000;
2333 return bfd_reloc_continue;
2334}
5bd4f169 2335
2441e016
AM
2336static bfd_reloc_status_type
2337ppc64_elf_branch_reloc (bfd *abfd, arelent *reloc_entry, asymbol *symbol,
2338 void *data, asection *input_section,
2339 bfd *output_bfd, char **error_message)
2340{
2341 if (output_bfd != NULL)
2342 return bfd_elf_generic_reloc (abfd, reloc_entry, symbol, data,
2343 input_section, output_bfd, error_message);
2344
699733f6
AM
2345 if (strcmp (symbol->section->name, ".opd") == 0
2346 && (symbol->section->owner->flags & DYNAMIC) == 0)
2441e016
AM
2347 {
2348 bfd_vma dest = opd_entry_value (symbol->section,
2349 symbol->value + reloc_entry->addend,
aef36ac1 2350 NULL, NULL, FALSE);
2441e016
AM
2351 if (dest != (bfd_vma) -1)
2352 reloc_entry->addend = dest - (symbol->value
2353 + symbol->section->output_section->vma
2354 + symbol->section->output_offset);
2355 }
2356 return bfd_reloc_continue;
2357}
2358
805fc799 2359static bfd_reloc_status_type
4ce794b7
AM
2360ppc64_elf_brtaken_reloc (bfd *abfd, arelent *reloc_entry, asymbol *symbol,
2361 void *data, asection *input_section,
2362 bfd *output_bfd, char **error_message)
805fc799
AM
2363{
2364 long insn;
04c9666a 2365 enum elf_ppc64_reloc_type r_type;
805fc799 2366 bfd_size_type octets;
794e51c0
AM
2367 /* Assume 'at' branch hints. */
2368 bfd_boolean is_isa_v2 = TRUE;
805fc799
AM
2369
2370 /* If this is a relocatable link (output_bfd test tells us), just
2371 call the generic function. Any adjustment will be done at final
2372 link time. */
5bd4f169 2373 if (output_bfd != NULL)
cedb70c5 2374 return bfd_elf_generic_reloc (abfd, reloc_entry, symbol, data,
805fc799
AM
2375 input_section, output_bfd, error_message);
2376
2377 octets = reloc_entry->address * bfd_octets_per_byte (abfd);
2378 insn = bfd_get_32 (abfd, (bfd_byte *) data + octets);
2379 insn &= ~(0x01 << 21);
4ce794b7 2380 r_type = reloc_entry->howto->type;
805fc799
AM
2381 if (r_type == R_PPC64_ADDR14_BRTAKEN
2382 || r_type == R_PPC64_REL14_BRTAKEN)
cedb70c5 2383 insn |= 0x01 << 21; /* 'y' or 't' bit, lowest bit of BO field. */
805fc799 2384
794e51c0 2385 if (is_isa_v2)
5bd4f169 2386 {
805fc799
AM
2387 /* Set 'a' bit. This is 0b00010 in BO field for branch
2388 on CR(BI) insns (BO == 001at or 011at), and 0b01000
2389 for branch on CTR insns (BO == 1a00t or 1a01t). */
2390 if ((insn & (0x14 << 21)) == (0x04 << 21))
2391 insn |= 0x02 << 21;
2392 else if ((insn & (0x14 << 21)) == (0x10 << 21))
2393 insn |= 0x08 << 21;
2394 else
2441e016 2395 goto out;
5bd4f169 2396 }
805fc799
AM
2397 else
2398 {
2399 bfd_vma target = 0;
2400 bfd_vma from;
5bd4f169 2401
805fc799
AM
2402 if (!bfd_is_com_section (symbol->section))
2403 target = symbol->value;
2404 target += symbol->section->output_section->vma;
2405 target += symbol->section->output_offset;
2406 target += reloc_entry->addend;
5bd4f169 2407
805fc799
AM
2408 from = (reloc_entry->address
2409 + input_section->output_offset
2410 + input_section->output_section->vma);
5bd4f169 2411
805fc799
AM
2412 /* Invert 'y' bit if not the default. */
2413 if ((bfd_signed_vma) (target - from) < 0)
2414 insn ^= 0x01 << 21;
2415 }
4ce794b7 2416 bfd_put_32 (abfd, insn, (bfd_byte *) data + octets);
2441e016
AM
2417 out:
2418 return ppc64_elf_branch_reloc (abfd, reloc_entry, symbol, data,
2419 input_section, output_bfd, error_message);
805fc799 2420}
5bd4f169 2421
805fc799 2422static bfd_reloc_status_type
4ce794b7
AM
2423ppc64_elf_sectoff_reloc (bfd *abfd, arelent *reloc_entry, asymbol *symbol,
2424 void *data, asection *input_section,
2425 bfd *output_bfd, char **error_message)
805fc799
AM
2426{
2427 /* If this is a relocatable link (output_bfd test tells us), just
2428 call the generic function. Any adjustment will be done at final
2429 link time. */
2430 if (output_bfd != NULL)
cedb70c5 2431 return bfd_elf_generic_reloc (abfd, reloc_entry, symbol, data,
805fc799 2432 input_section, output_bfd, error_message);
5bd4f169 2433
805fc799
AM
2434 /* Subtract the symbol section base address. */
2435 reloc_entry->addend -= symbol->section->output_section->vma;
5bd4f169
AM
2436 return bfd_reloc_continue;
2437}
2438
805fc799 2439static bfd_reloc_status_type
4ce794b7
AM
2440ppc64_elf_sectoff_ha_reloc (bfd *abfd, arelent *reloc_entry, asymbol *symbol,
2441 void *data, asection *input_section,
2442 bfd *output_bfd, char **error_message)
805fc799
AM
2443{
2444 /* If this is a relocatable link (output_bfd test tells us), just
2445 call the generic function. Any adjustment will be done at final
2446 link time. */
2447 if (output_bfd != NULL)
cedb70c5 2448 return bfd_elf_generic_reloc (abfd, reloc_entry, symbol, data,
805fc799
AM
2449 input_section, output_bfd, error_message);
2450
2451 /* Subtract the symbol section base address. */
2452 reloc_entry->addend -= symbol->section->output_section->vma;
2453
2454 /* Adjust the addend for sign extension of the low 16 bits. */
2455 reloc_entry->addend += 0x8000;
2456 return bfd_reloc_continue;
2457}
2458
2459static bfd_reloc_status_type
4ce794b7
AM
2460ppc64_elf_toc_reloc (bfd *abfd, arelent *reloc_entry, asymbol *symbol,
2461 void *data, asection *input_section,
2462 bfd *output_bfd, char **error_message)
805fc799
AM
2463{
2464 bfd_vma TOCstart;
2465
2466 /* If this is a relocatable link (output_bfd test tells us), just
2467 call the generic function. Any adjustment will be done at final
2468 link time. */
2469 if (output_bfd != NULL)
cedb70c5 2470 return bfd_elf_generic_reloc (abfd, reloc_entry, symbol, data,
805fc799
AM
2471 input_section, output_bfd, error_message);
2472
2473 TOCstart = _bfd_get_gp_value (input_section->output_section->owner);
2474 if (TOCstart == 0)
2475 TOCstart = ppc64_elf_toc (input_section->output_section->owner);
2476
2477 /* Subtract the TOC base address. */
2478 reloc_entry->addend -= TOCstart + TOC_BASE_OFF;
2479 return bfd_reloc_continue;
2480}
2481
2482static bfd_reloc_status_type
4ce794b7
AM
2483ppc64_elf_toc_ha_reloc (bfd *abfd, arelent *reloc_entry, asymbol *symbol,
2484 void *data, asection *input_section,
2485 bfd *output_bfd, char **error_message)
805fc799
AM
2486{
2487 bfd_vma TOCstart;
2488
2489 /* If this is a relocatable link (output_bfd test tells us), just
2490 call the generic function. Any adjustment will be done at final
2491 link time. */
2492 if (output_bfd != NULL)
cedb70c5 2493 return bfd_elf_generic_reloc (abfd, reloc_entry, symbol, data,
805fc799
AM
2494 input_section, output_bfd, error_message);
2495
2496 TOCstart = _bfd_get_gp_value (input_section->output_section->owner);
2497 if (TOCstart == 0)
2498 TOCstart = ppc64_elf_toc (input_section->output_section->owner);
2499
2500 /* Subtract the TOC base address. */
2501 reloc_entry->addend -= TOCstart + TOC_BASE_OFF;
2502
2503 /* Adjust the addend for sign extension of the low 16 bits. */
2504 reloc_entry->addend += 0x8000;
2505 return bfd_reloc_continue;
2506}
2507
2508static bfd_reloc_status_type
4ce794b7
AM
2509ppc64_elf_toc64_reloc (bfd *abfd, arelent *reloc_entry, asymbol *symbol,
2510 void *data, asection *input_section,
2511 bfd *output_bfd, char **error_message)
805fc799
AM
2512{
2513 bfd_vma TOCstart;
2514 bfd_size_type octets;
2515
2516 /* If this is a relocatable link (output_bfd test tells us), just
2517 call the generic function. Any adjustment will be done at final
2518 link time. */
2519 if (output_bfd != NULL)
cedb70c5 2520 return bfd_elf_generic_reloc (abfd, reloc_entry, symbol, data,
805fc799
AM
2521 input_section, output_bfd, error_message);
2522
2523 TOCstart = _bfd_get_gp_value (input_section->output_section->owner);
2524 if (TOCstart == 0)
2525 TOCstart = ppc64_elf_toc (input_section->output_section->owner);
2526
2527 octets = reloc_entry->address * bfd_octets_per_byte (abfd);
2528 bfd_put_64 (abfd, TOCstart + TOC_BASE_OFF, (bfd_byte *) data + octets);
2529 return bfd_reloc_ok;
2530}
2531
2532static bfd_reloc_status_type
4ce794b7
AM
2533ppc64_elf_unhandled_reloc (bfd *abfd, arelent *reloc_entry, asymbol *symbol,
2534 void *data, asection *input_section,
2535 bfd *output_bfd, char **error_message)
805fc799
AM
2536{
2537 /* If this is a relocatable link (output_bfd test tells us), just
2538 call the generic function. Any adjustment will be done at final
2539 link time. */
2540 if (output_bfd != NULL)
cedb70c5 2541 return bfd_elf_generic_reloc (abfd, reloc_entry, symbol, data,
805fc799
AM
2542 input_section, output_bfd, error_message);
2543
2544 if (error_message != NULL)
2545 {
2546 static char buf[60];
2547 sprintf (buf, "generic linker can't handle %s",
2548 reloc_entry->howto->name);
2549 *error_message = buf;
2550 }
2551 return bfd_reloc_dangerous;
2552}
2553
927be08e
AM
2554/* Track GOT entries needed for a given symbol. We might need more
2555 than one got entry per symbol. */
2556struct got_entry
2557{
2558 struct got_entry *next;
2559
2560 /* The symbol addend that we'll be placing in the GOT. */
2561 bfd_vma addend;
2562
2563 /* Unlike other ELF targets, we use separate GOT entries for the same
2564 symbol referenced from different input files. This is to support
2565 automatic multiple TOC/GOT sections, where the TOC base can vary
2566 from one input file to another. After partitioning into TOC groups
2567 we merge entries within the group.
2568
2569 Point to the BFD owning this GOT entry. */
2570 bfd *owner;
2571
2572 /* Zero for non-tls entries, or TLS_TLS and one of TLS_GD, TLS_LD,
2573 TLS_TPREL or TLS_DTPREL for tls entries. */
f961d9dd 2574 unsigned char tls_type;
927be08e
AM
2575
2576 /* Non-zero if got.ent points to real entry. */
f961d9dd 2577 unsigned char is_indirect;
927be08e
AM
2578
2579 /* Reference count until size_dynamic_sections, GOT offset thereafter. */
2580 union
2581 {
2582 bfd_signed_vma refcount;
2583 bfd_vma offset;
2584 struct got_entry *ent;
2585 } got;
2586};
2587
2588/* The same for PLT. */
2589struct plt_entry
2590{
2591 struct plt_entry *next;
2592
2593 bfd_vma addend;
2594
2595 union
2596 {
2597 bfd_signed_vma refcount;
2598 bfd_vma offset;
2599 } plt;
2600};
2601
e717da7e
AM
2602struct ppc64_elf_obj_tdata
2603{
2604 struct elf_obj_tdata elf;
2605
2606 /* Shortcuts to dynamic linker sections. */
2607 asection *got;
2608 asection *relgot;
2609
b3fac117
AM
2610 /* Used during garbage collection. We attach global symbols defined
2611 on removed .opd entries to this section so that the sym is removed. */
2612 asection *deleted_section;
81688140 2613
927be08e 2614 /* TLS local dynamic got entry handling. Support for multiple GOT
e717da7e 2615 sections means we potentially need one of these for each input bfd. */
927be08e 2616 struct got_entry tlsld_got;
8860955f
AM
2617
2618 /* A copy of relocs before they are modified for --emit-relocs. */
2619 Elf_Internal_Rela *opd_relocs;
d77c8a4b
AM
2620
2621 /* Nonzero if this bfd has small toc/got relocs, ie. that expect
2622 the reloc to be in the range -32768 to 32767. */
98528052
AM
2623 unsigned int has_small_toc_reloc : 1;
2624
560c8763
AM
2625 /* Set if toc/got ha relocs detected not using r2, or lo reloc
2626 instruction not one we handle. */
2627 unsigned int unexpected_toc_insn : 1;
e717da7e
AM
2628};
2629
2630#define ppc64_elf_tdata(bfd) \
2631 ((struct ppc64_elf_obj_tdata *) (bfd)->tdata.any)
2632
2633#define ppc64_tlsld_got(bfd) \
2634 (&ppc64_elf_tdata (bfd)->tlsld_got)
2635
0c8d6e5c
AM
2636#define is_ppc64_elf(bfd) \
2637 (bfd_get_flavour (bfd) == bfd_target_elf_flavour \
4dfe6ac6 2638 && elf_object_id (bfd) == PPC64_ELF_DATA)
0c8d6e5c 2639
e717da7e
AM
2640/* Override the generic function because we store some extras. */
2641
2642static bfd_boolean
2643ppc64_elf_mkobject (bfd *abfd)
2644{
0ffa91dd 2645 return bfd_elf_allocate_object (abfd, sizeof (struct ppc64_elf_obj_tdata),
4dfe6ac6 2646 PPC64_ELF_DATA);
e717da7e
AM
2647}
2648
feee612b
AM
2649/* Fix bad default arch selected for a 64 bit input bfd when the
2650 default is 32 bit. */
2651
b34976b6 2652static bfd_boolean
4ce794b7 2653ppc64_elf_object_p (bfd *abfd)
feee612b
AM
2654{
2655 if (abfd->arch_info->the_default && abfd->arch_info->bits_per_word == 32)
2656 {
2657 Elf_Internal_Ehdr *i_ehdr = elf_elfheader (abfd);
2658
2659 if (i_ehdr->e_ident[EI_CLASS] == ELFCLASS64)
2660 {
2661 /* Relies on arch after 32 bit default being 64 bit default. */
2662 abfd->arch_info = abfd->arch_info->next;
2663 BFD_ASSERT (abfd->arch_info->bits_per_word == 64);
2664 }
2665 }
b34976b6 2666 return TRUE;
feee612b
AM
2667}
2668
d37c89e5
AM
2669/* Support for core dump NOTE sections. */
2670
2671static bfd_boolean
2672ppc64_elf_grok_prstatus (bfd *abfd, Elf_Internal_Note *note)
2673{
eea6121a 2674 size_t offset, size;
d37c89e5
AM
2675
2676 if (note->descsz != 504)
2677 return FALSE;
2678
2679 /* pr_cursig */
2680 elf_tdata (abfd)->core_signal = bfd_get_16 (abfd, note->descdata + 12);
2681
2682 /* pr_pid */
261b8d08 2683 elf_tdata (abfd)->core_lwpid = bfd_get_32 (abfd, note->descdata + 32);
d37c89e5
AM
2684
2685 /* pr_reg */
2686 offset = 112;
eea6121a 2687 size = 384;
d37c89e5
AM
2688
2689 /* Make a ".reg/999" section. */
2690 return _bfd_elfcore_make_pseudosection (abfd, ".reg",
eea6121a 2691 size, note->descpos + offset);
d37c89e5
AM
2692}
2693
2694static bfd_boolean
2695ppc64_elf_grok_psinfo (bfd *abfd, Elf_Internal_Note *note)
2696{
2697 if (note->descsz != 136)
2698 return FALSE;
2699
bc989cdc
JK
2700 elf_tdata (abfd)->core_pid
2701 = bfd_get_32 (abfd, note->descdata + 24);
d37c89e5
AM
2702 elf_tdata (abfd)->core_program
2703 = _bfd_elfcore_strndup (abfd, note->descdata + 40, 16);
2704 elf_tdata (abfd)->core_command
2705 = _bfd_elfcore_strndup (abfd, note->descdata + 56, 80);
2706
2707 return TRUE;
2708}
2709
183e98be
AM
2710static char *
2711ppc64_elf_write_core_note (bfd *abfd, char *buf, int *bufsiz, int note_type,
2712 ...)
2713{
2714 switch (note_type)
2715 {
2716 default:
2717 return NULL;
2718
2719 case NT_PRPSINFO:
2720 {
2721 char data[136];
2722 va_list ap;
2723
2724 va_start (ap, note_type);
75cd47ed 2725 memset (data, 0, sizeof (data));
183e98be
AM
2726 strncpy (data + 40, va_arg (ap, const char *), 16);
2727 strncpy (data + 56, va_arg (ap, const char *), 80);
2728 va_end (ap);
2729 return elfcore_write_note (abfd, buf, bufsiz,
2730 "CORE", note_type, data, sizeof (data));
2731 }
2732
2733 case NT_PRSTATUS:
2734 {
2735 char data[504];
2736 va_list ap;
2737 long pid;
2738 int cursig;
2739 const void *greg;
2740
2741 va_start (ap, note_type);
2742 memset (data, 0, 112);
2743 pid = va_arg (ap, long);
2744 bfd_put_32 (abfd, pid, data + 32);
2745 cursig = va_arg (ap, int);
2746 bfd_put_16 (abfd, cursig, data + 12);
2747 greg = va_arg (ap, const void *);
2748 memcpy (data + 112, greg, 384);
2749 memset (data + 496, 0, 8);
2750 va_end (ap);
2751 return elfcore_write_note (abfd, buf, bufsiz,
2752 "CORE", note_type, data, sizeof (data));
2753 }
2754 }
2755}
2756
5d35169e
AM
2757/* Add extra PPC sections. */
2758
b35d266b 2759static const struct bfd_elf_special_section ppc64_elf_special_sections[]=
7f4d3958 2760{
0112cd26
NC
2761 { STRING_COMMA_LEN (".plt"), 0, SHT_NOBITS, 0 },
2762 { STRING_COMMA_LEN (".sbss"), -2, SHT_NOBITS, SHF_ALLOC + SHF_WRITE },
2763 { STRING_COMMA_LEN (".sdata"), -2, SHT_PROGBITS, SHF_ALLOC + SHF_WRITE },
2764 { STRING_COMMA_LEN (".toc"), 0, SHT_PROGBITS, SHF_ALLOC + SHF_WRITE },
2765 { STRING_COMMA_LEN (".toc1"), 0, SHT_PROGBITS, SHF_ALLOC + SHF_WRITE },
2766 { STRING_COMMA_LEN (".tocbss"), 0, SHT_NOBITS, SHF_ALLOC + SHF_WRITE },
2767 { NULL, 0, 0, 0, 0 }
5d35169e
AM
2768};
2769
7c8fe5c4
AM
2770enum _ppc64_sec_type {
2771 sec_normal = 0,
2772 sec_opd = 1,
2773 sec_toc = 2
2774};
2775
f0abc2a1
AM
2776struct _ppc64_elf_section_data
2777{
2778 struct bfd_elf_section_data elf;
411e1bfb 2779
f0abc2a1
AM
2780 union
2781 {
74f0fb50
AM
2782 /* An array with one entry for each opd function descriptor. */
2783 struct _opd_sec_data
2784 {
2785 /* Points to the function code section for local opd entries. */
2786 asection **func_sec;
2787
2788 /* After editing .opd, adjust references to opd local syms. */
2789 long *adjust;
2790 } opd;
7c8fe5c4 2791
3a71aa26
AM
2792 /* An array for toc sections, indexed by offset/8. */
2793 struct _toc_sec_data
2794 {
2795 /* Specifies the relocation symbol index used at a given toc offset. */
2796 unsigned *symndx;
2797
2798 /* And the relocation addend. */
2799 bfd_vma *add;
2800 } toc;
7c8fe5c4
AM
2801 } u;
2802
2803 enum _ppc64_sec_type sec_type:2;
411e1bfb 2804
7c8fe5c4
AM
2805 /* Flag set when small branches are detected. Used to
2806 select suitable defaults for the stub group size. */
2807 unsigned int has_14bit_branch:1;
f0abc2a1
AM
2808};
2809
2810#define ppc64_elf_section_data(sec) \
411e1bfb 2811 ((struct _ppc64_elf_section_data *) elf_section_data (sec))
f0abc2a1
AM
2812
2813static bfd_boolean
4ce794b7 2814ppc64_elf_new_section_hook (bfd *abfd, asection *sec)
f0abc2a1 2815{
f592407e
AM
2816 if (!sec->used_by_bfd)
2817 {
2818 struct _ppc64_elf_section_data *sdata;
2819 bfd_size_type amt = sizeof (*sdata);
f0abc2a1 2820
f592407e
AM
2821 sdata = bfd_zalloc (abfd, amt);
2822 if (sdata == NULL)
2823 return FALSE;
2824 sec->used_by_bfd = sdata;
2825 }
f0abc2a1
AM
2826
2827 return _bfd_elf_new_section_hook (abfd, sec);
2828}
4025353c 2829
74f0fb50 2830static struct _opd_sec_data *
4025353c
AM
2831get_opd_info (asection * sec)
2832{
2833 if (sec != NULL
2834 && ppc64_elf_section_data (sec) != NULL
7c8fe5c4 2835 && ppc64_elf_section_data (sec)->sec_type == sec_opd)
74f0fb50 2836 return &ppc64_elf_section_data (sec)->u.opd;
4025353c
AM
2837 return NULL;
2838}
90e3cdf2
JJ
2839\f
2840/* Parameters for the qsort hook. */
90e3cdf2
JJ
2841static bfd_boolean synthetic_relocatable;
2842
699733f6 2843/* qsort comparison function for ppc64_elf_get_synthetic_symtab. */
90e3cdf2
JJ
2844
2845static int
2846compare_symbols (const void *ap, const void *bp)
2847{
2848 const asymbol *a = * (const asymbol **) ap;
2849 const asymbol *b = * (const asymbol **) bp;
2850
699733f6
AM
2851 /* Section symbols first. */
2852 if ((a->flags & BSF_SECTION_SYM) && !(b->flags & BSF_SECTION_SYM))
90e3cdf2 2853 return -1;
699733f6 2854 if (!(a->flags & BSF_SECTION_SYM) && (b->flags & BSF_SECTION_SYM))
90e3cdf2
JJ
2855 return 1;
2856
699733f6 2857 /* then .opd symbols. */
ffcfec52
AM
2858 if (strcmp (a->section->name, ".opd") == 0
2859 && strcmp (b->section->name, ".opd") != 0)
90e3cdf2 2860 return -1;
ffcfec52
AM
2861 if (strcmp (a->section->name, ".opd") != 0
2862 && strcmp (b->section->name, ".opd") == 0)
90e3cdf2
JJ
2863 return 1;
2864
699733f6 2865 /* then other code symbols. */
90e3cdf2
JJ
2866 if ((a->section->flags & (SEC_CODE | SEC_ALLOC | SEC_THREAD_LOCAL))
2867 == (SEC_CODE | SEC_ALLOC)
2868 && (b->section->flags & (SEC_CODE | SEC_ALLOC | SEC_THREAD_LOCAL))
2869 != (SEC_CODE | SEC_ALLOC))
2870 return -1;
2871
2872 if ((a->section->flags & (SEC_CODE | SEC_ALLOC | SEC_THREAD_LOCAL))
2873 != (SEC_CODE | SEC_ALLOC)
2874 && (b->section->flags & (SEC_CODE | SEC_ALLOC | SEC_THREAD_LOCAL))
2875 == (SEC_CODE | SEC_ALLOC))
2876 return 1;
2877
2878 if (synthetic_relocatable)
2879 {
2880 if (a->section->id < b->section->id)
2881 return -1;
2882
2883 if (a->section->id > b->section->id)
2884 return 1;
2885 }
2886
2887 if (a->value + a->section->vma < b->value + b->section->vma)
2888 return -1;
2889
2890 if (a->value + a->section->vma > b->value + b->section->vma)
2891 return 1;
2892
4d35a0aa
AM
2893 /* For syms with the same value, prefer strong dynamic global function
2894 syms over other syms. */
2895 if ((a->flags & BSF_GLOBAL) != 0 && (b->flags & BSF_GLOBAL) == 0)
2896 return -1;
2897
2898 if ((a->flags & BSF_GLOBAL) == 0 && (b->flags & BSF_GLOBAL) != 0)
2899 return 1;
2900
2901 if ((a->flags & BSF_FUNCTION) != 0 && (b->flags & BSF_FUNCTION) == 0)
2902 return -1;
2903
2904 if ((a->flags & BSF_FUNCTION) == 0 && (b->flags & BSF_FUNCTION) != 0)
2905 return 1;
2906
2907 if ((a->flags & BSF_WEAK) == 0 && (b->flags & BSF_WEAK) != 0)
2908 return -1;
2909
2910 if ((a->flags & BSF_WEAK) != 0 && (b->flags & BSF_WEAK) == 0)
2911 return 1;
2912
2913 if ((a->flags & BSF_DYNAMIC) != 0 && (b->flags & BSF_DYNAMIC) == 0)
2914 return -1;
2915
2916 if ((a->flags & BSF_DYNAMIC) == 0 && (b->flags & BSF_DYNAMIC) != 0)
2917 return 1;
2918
90e3cdf2
JJ
2919 return 0;
2920}
2921
699733f6 2922/* Search SYMS for a symbol of the given VALUE. */
90e3cdf2 2923
699733f6
AM
2924static asymbol *
2925sym_exists_at (asymbol **syms, long lo, long hi, int id, bfd_vma value)
90e3cdf2 2926{
699733f6 2927 long mid;
90e3cdf2 2928
699733f6
AM
2929 if (id == -1)
2930 {
2931 while (lo < hi)
2932 {
2933 mid = (lo + hi) >> 1;
2934 if (syms[mid]->value + syms[mid]->section->vma < value)
2935 lo = mid + 1;
2936 else if (syms[mid]->value + syms[mid]->section->vma > value)
2937 hi = mid;
2938 else
2939 return syms[mid];
2940 }
2941 }
2942 else
2943 {
2944 while (lo < hi)
2945 {
2946 mid = (lo + hi) >> 1;
2947 if (syms[mid]->section->id < id)
2948 lo = mid + 1;
2949 else if (syms[mid]->section->id > id)
2950 hi = mid;
2951 else if (syms[mid]->value < value)
2952 lo = mid + 1;
2953 else if (syms[mid]->value > value)
2954 hi = mid;
2955 else
2956 return syms[mid];
2957 }
2958 }
2959 return NULL;
90e3cdf2
JJ
2960}
2961
468392fb
AM
2962static bfd_boolean
2963section_covers_vma (bfd *abfd ATTRIBUTE_UNUSED, asection *section, void *ptr)
2964{
2965 bfd_vma vma = *(bfd_vma *) ptr;
2966 return ((section->flags & SEC_ALLOC) != 0
2967 && section->vma <= vma
2968 && vma < section->vma + section->size);
2969}
2970
699733f6 2971/* Create synthetic symbols, effectively restoring "dot-symbol" function
468392fb 2972 entry syms. Also generate @plt symbols for the glink branch table. */
90e3cdf2
JJ
2973
2974static long
a7535cf3
AM
2975ppc64_elf_get_synthetic_symtab (bfd *abfd,
2976 long static_count, asymbol **static_syms,
2977 long dyn_count, asymbol **dyn_syms,
c9727e01 2978 asymbol **ret)
90e3cdf2
JJ
2979{
2980 asymbol *s;
699733f6
AM
2981 long i;
2982 long count;
90e3cdf2 2983 char *names;
a7535cf3 2984 long symcount, codesecsym, codesecsymend, secsymend, opdsymend;
699733f6 2985 asection *opd;
90e3cdf2 2986 bfd_boolean relocatable = (abfd->flags & (EXEC_P | DYNAMIC)) == 0;
a7535cf3 2987 asymbol **syms;
90e3cdf2
JJ
2988
2989 *ret = NULL;
2990
2991 opd = bfd_get_section_by_name (abfd, ".opd");
2992 if (opd == NULL)
2993 return 0;
2994
a7535cf3 2995 symcount = static_count;
c9727e01 2996 if (!relocatable)
a7535cf3 2997 symcount += dyn_count;
90e3cdf2 2998 if (symcount == 0)
c9727e01 2999 return 0;
90e3cdf2 3000
a7535cf3
AM
3001 syms = bfd_malloc ((symcount + 1) * sizeof (*syms));
3002 if (syms == NULL)
7356fed5 3003 return -1;
a7535cf3
AM
3004
3005 if (!relocatable && static_count != 0 && dyn_count != 0)
3006 {
3007 /* Use both symbol tables. */
3008 memcpy (syms, static_syms, static_count * sizeof (*syms));
3009 memcpy (syms + static_count, dyn_syms, (dyn_count + 1) * sizeof (*syms));
3010 }
3011 else if (!relocatable && static_count == 0)
3012 memcpy (syms, dyn_syms, (symcount + 1) * sizeof (*syms));
3013 else
3014 memcpy (syms, static_syms, (symcount + 1) * sizeof (*syms));
3015
90e3cdf2 3016 synthetic_relocatable = relocatable;
595da8c5 3017 qsort (syms, symcount, sizeof (*syms), compare_symbols);
90e3cdf2 3018
c9727e01
AM
3019 if (!relocatable && symcount > 1)
3020 {
3021 long j;
3022 /* Trim duplicate syms, since we may have merged the normal and
3023 dynamic symbols. Actually, we only care about syms that have
3b36f7e6 3024 different values, so trim any with the same value. */
c9727e01
AM
3025 for (i = 1, j = 1; i < symcount; ++i)
3026 if (syms[i - 1]->value + syms[i - 1]->section->vma
3027 != syms[i]->value + syms[i]->section->vma)
3028 syms[j++] = syms[i];
3029 symcount = j;
3030 }
3031
699733f6 3032 i = 0;
ffcfec52 3033 if (strcmp (syms[i]->section->name, ".opd") == 0)
699733f6
AM
3034 ++i;
3035 codesecsym = i;
90e3cdf2 3036
699733f6
AM
3037 for (; i < symcount; ++i)
3038 if (((syms[i]->section->flags & (SEC_CODE | SEC_ALLOC | SEC_THREAD_LOCAL))
3039 != (SEC_CODE | SEC_ALLOC))
3040 || (syms[i]->flags & BSF_SECTION_SYM) == 0)
3041 break;
3042 codesecsymend = i;
90e3cdf2 3043
699733f6
AM
3044 for (; i < symcount; ++i)
3045 if ((syms[i]->flags & BSF_SECTION_SYM) == 0)
3046 break;
3047 secsymend = i;
90e3cdf2 3048
699733f6 3049 for (; i < symcount; ++i)
ffcfec52 3050 if (strcmp (syms[i]->section->name, ".opd") != 0)
699733f6
AM
3051 break;
3052 opdsymend = i;
90e3cdf2 3053
699733f6
AM
3054 for (; i < symcount; ++i)
3055 if ((syms[i]->section->flags & (SEC_CODE | SEC_ALLOC | SEC_THREAD_LOCAL))
3056 != (SEC_CODE | SEC_ALLOC))
3057 break;
3058 symcount = i;
3059
c9727e01 3060 count = 0;
90e3cdf2 3061
699733f6 3062 if (relocatable)
90e3cdf2 3063 {
699733f6
AM
3064 bfd_boolean (*slurp_relocs) (bfd *, asection *, asymbol **, bfd_boolean);
3065 arelent *r;
3066 size_t size;
3067 long relcount;
90e3cdf2 3068
468392fb
AM
3069 if (opdsymend == secsymend)
3070 goto done;
3071
699733f6 3072 slurp_relocs = get_elf_backend_data (abfd)->s->slurp_reloc_table;
90e3cdf2 3073 relcount = (opd->flags & SEC_RELOC) ? opd->reloc_count : 0;
7356fed5 3074 if (relcount == 0)
c9727e01 3075 goto done;
90e3cdf2 3076
7356fed5
AM
3077 if (!(*slurp_relocs) (abfd, opd, static_syms, FALSE))
3078 {
3079 count = -1;
3080 goto done;
3081 }
3082
699733f6 3083 size = 0;
595da8c5 3084 for (i = secsymend, r = opd->relocation; i < opdsymend; ++i)
699733f6
AM
3085 {
3086 asymbol *sym;
90e3cdf2 3087
595da8c5 3088 while (r < opd->relocation + relcount
699733f6
AM
3089 && r->address < syms[i]->value + opd->vma)
3090 ++r;
90e3cdf2 3091
595da8c5 3092 if (r == opd->relocation + relcount)
699733f6 3093 break;
90e3cdf2 3094
699733f6
AM
3095 if (r->address != syms[i]->value + opd->vma)
3096 continue;
90e3cdf2 3097
699733f6
AM
3098 if (r->howto->type != R_PPC64_ADDR64)
3099 continue;
90e3cdf2 3100
699733f6
AM
3101 sym = *r->sym_ptr_ptr;
3102 if (!sym_exists_at (syms, opdsymend, symcount,
3103 sym->section->id, sym->value + r->addend))
3104 {
3105 ++count;
3106 size += sizeof (asymbol);
3107 size += strlen (syms[i]->name) + 2;
3108 }
3109 }
90e3cdf2 3110
699733f6
AM
3111 s = *ret = bfd_malloc (size);
3112 if (s == NULL)
3113 {
7356fed5 3114 count = -1;
c9727e01 3115 goto done;
699733f6 3116 }
90e3cdf2 3117
699733f6 3118 names = (char *) (s + count);
90e3cdf2 3119
595da8c5 3120 for (i = secsymend, r = opd->relocation; i < opdsymend; ++i)
90e3cdf2 3121 {
699733f6 3122 asymbol *sym;
90e3cdf2 3123
595da8c5 3124 while (r < opd->relocation + relcount
699733f6
AM
3125 && r->address < syms[i]->value + opd->vma)
3126 ++r;
90e3cdf2 3127
595da8c5 3128 if (r == opd->relocation + relcount)
699733f6
AM
3129 break;
3130
3131 if (r->address != syms[i]->value + opd->vma)
3132 continue;
3133
3134 if (r->howto->type != R_PPC64_ADDR64)
3135 continue;
90e3cdf2 3136
699733f6
AM
3137 sym = *r->sym_ptr_ptr;
3138 if (!sym_exists_at (syms, opdsymend, symcount,
3139 sym->section->id, sym->value + r->addend))
3140 {
3141 size_t len;
3142
3143 *s = *syms[i];
6ba2a415 3144 s->flags |= BSF_SYNTHETIC;
699733f6
AM
3145 s->section = sym->section;
3146 s->value = sym->value + r->addend;
3147 s->name = names;
3148 *names++ = '.';
3149 len = strlen (syms[i]->name);
3150 memcpy (names, syms[i]->name, len + 1);
3151 names += len + 1;
6f610d07
UW
3152 /* Have udata.p point back to the original symbol this
3153 synthetic symbol was derived from. */
3154 s->udata.p = syms[i];
699733f6
AM
3155 s++;
3156 }
3157 }
3158 }
3159 else
90e3cdf2 3160 {
468392fb 3161 bfd_boolean (*slurp_relocs) (bfd *, asection *, asymbol **, bfd_boolean);
699733f6
AM
3162 bfd_byte *contents;
3163 size_t size;
468392fb
AM
3164 long plt_count = 0;
3165 bfd_vma glink_vma = 0, resolv_vma = 0;
3166 asection *dynamic, *glink = NULL, *relplt = NULL;
3167 arelent *p;
90e3cdf2 3168
699733f6
AM
3169 if (!bfd_malloc_and_get_section (abfd, opd, &contents))
3170 {
3171 if (contents)
c9727e01
AM
3172 {
3173 free_contents_and_exit:
3174 free (contents);
3175 }
7356fed5 3176 count = -1;
c9727e01 3177 goto done;
699733f6 3178 }
90e3cdf2 3179
699733f6
AM
3180 size = 0;
3181 for (i = secsymend; i < opdsymend; ++i)
3182 {
3183 bfd_vma ent;
90e3cdf2 3184
5ef11c02
AM
3185 /* Ignore bogus symbols. */
3186 if (syms[i]->value > opd->size - 8)
3187 continue;
3188
699733f6
AM
3189 ent = bfd_get_64 (abfd, contents + syms[i]->value);
3190 if (!sym_exists_at (syms, opdsymend, symcount, -1, ent))
3191 {
3192 ++count;
3193 size += sizeof (asymbol);
3194 size += strlen (syms[i]->name) + 2;
3195 }
3196 }
90e3cdf2 3197
468392fb 3198 /* Get start of .glink stubs from DT_PPC64_GLINK. */
066ee829
AM
3199 if (dyn_count != 0
3200 && (dynamic = bfd_get_section_by_name (abfd, ".dynamic")) != NULL)
468392fb
AM
3201 {
3202 bfd_byte *dynbuf, *extdyn, *extdynend;
3203 size_t extdynsize;
3204 void (*swap_dyn_in) (bfd *, const void *, Elf_Internal_Dyn *);
3205
3206 if (!bfd_malloc_and_get_section (abfd, dynamic, &dynbuf))
3207 goto free_contents_and_exit;
3208
3209 extdynsize = get_elf_backend_data (abfd)->s->sizeof_dyn;
3210 swap_dyn_in = get_elf_backend_data (abfd)->s->swap_dyn_in;
3211
3212 extdyn = dynbuf;
3213 extdynend = extdyn + dynamic->size;
3214 for (; extdyn < extdynend; extdyn += extdynsize)
3215 {
3216 Elf_Internal_Dyn dyn;
3217 (*swap_dyn_in) (abfd, extdyn, &dyn);
3218
3219 if (dyn.d_tag == DT_NULL)
3220 break;
3221
3222 if (dyn.d_tag == DT_PPC64_GLINK)
3223 {
3224 /* The first glink stub starts at offset 32; see comment in
3225 ppc64_elf_finish_dynamic_sections. */
3226 glink_vma = dyn.d_un.d_val + 32;
3227 /* The .glink section usually does not survive the final
3228 link; search for the section (usually .text) where the
3229 glink stubs now reside. */
3230 glink = bfd_sections_find_if (abfd, section_covers_vma,
3231 &glink_vma);
3232 break;
3233 }
3234 }
3235
3236 free (dynbuf);
3237 }
3238
3239 if (glink != NULL)
3240 {
3241 /* Determine __glink trampoline by reading the relative branch
3242 from the first glink stub. */
3243 bfd_byte buf[4];
3244 if (bfd_get_section_contents (abfd, glink, buf,
3245 glink_vma + 4 - glink->vma, 4))
3246 {
3247 unsigned int insn = bfd_get_32 (abfd, buf);
3248 insn ^= B_DOT;
3249 if ((insn & ~0x3fffffc) == 0)
3250 resolv_vma = glink_vma + 4 + (insn ^ 0x2000000) - 0x2000000;
3251 }
3252
3253 if (resolv_vma)
3254 size += sizeof (asymbol) + sizeof ("__glink_PLTresolve");
468392fb 3255
066ee829
AM
3256 relplt = bfd_get_section_by_name (abfd, ".rela.plt");
3257 if (relplt != NULL)
3258 {
3259 slurp_relocs = get_elf_backend_data (abfd)->s->slurp_reloc_table;
3260 if (! (*slurp_relocs) (abfd, relplt, dyn_syms, TRUE))
3261 goto free_contents_and_exit;
468392fb 3262
066ee829
AM
3263 plt_count = relplt->size / sizeof (Elf64_External_Rela);
3264 size += plt_count * sizeof (asymbol);
468392fb 3265
066ee829
AM
3266 p = relplt->relocation;
3267 for (i = 0; i < plt_count; i++, p++)
e054468f
AM
3268 {
3269 size += strlen ((*p->sym_ptr_ptr)->name) + sizeof ("@plt");
3270 if (p->addend != 0)
3271 size += sizeof ("+0x") - 1 + 16;
3272 }
066ee829 3273 }
468392fb
AM
3274 }
3275
699733f6
AM
3276 s = *ret = bfd_malloc (size);
3277 if (s == NULL)
7356fed5 3278 goto free_contents_and_exit;
90e3cdf2 3279
468392fb 3280 names = (char *) (s + count + plt_count + (resolv_vma != 0));
90e3cdf2 3281
699733f6 3282 for (i = secsymend; i < opdsymend; ++i)
90e3cdf2 3283 {
699733f6 3284 bfd_vma ent;
90e3cdf2 3285
5ef11c02
AM
3286 if (syms[i]->value > opd->size - 8)
3287 continue;
3288
699733f6
AM
3289 ent = bfd_get_64 (abfd, contents + syms[i]->value);
3290 if (!sym_exists_at (syms, opdsymend, symcount, -1, ent))
90e3cdf2 3291 {
c9727e01 3292 long lo, hi;
699733f6 3293 size_t len;
c9727e01 3294 asection *sec = abfd->sections;
90e3cdf2 3295
699733f6
AM
3296 *s = *syms[i];
3297 lo = codesecsym;
3298 hi = codesecsymend;
3299 while (lo < hi)
3300 {
c9727e01 3301 long mid = (lo + hi) >> 1;
699733f6
AM
3302 if (syms[mid]->section->vma < ent)
3303 lo = mid + 1;
3304 else if (syms[mid]->section->vma > ent)
3305 hi = mid;
3306 else
c9727e01
AM
3307 {
3308 sec = syms[mid]->section;
3309 break;
3310 }
699733f6
AM
3311 }
3312
c9727e01 3313 if (lo >= hi && lo > codesecsym)
699733f6 3314 sec = syms[lo - 1]->section;
699733f6
AM
3315
3316 for (; sec != NULL; sec = sec->next)
3317 {
3318 if (sec->vma > ent)
3319 break;
63524580
JK
3320 /* SEC_LOAD may not be set if SEC is from a separate debug
3321 info file. */
3322 if ((sec->flags & SEC_ALLOC) == 0)
699733f6
AM
3323 break;
3324 if ((sec->flags & SEC_CODE) != 0)
3325 s->section = sec;
3326 }
6ba2a415 3327 s->flags |= BSF_SYNTHETIC;
699733f6
AM
3328 s->value = ent - s->section->vma;
3329 s->name = names;
3330 *names++ = '.';
3331 len = strlen (syms[i]->name);
3332 memcpy (names, syms[i]->name, len + 1);
3333 names += len + 1;
6f610d07
UW
3334 /* Have udata.p point back to the original symbol this
3335 synthetic symbol was derived from. */
3336 s->udata.p = syms[i];
699733f6 3337 s++;
90e3cdf2 3338 }
90e3cdf2 3339 }
699733f6 3340 free (contents);
468392fb
AM
3341
3342 if (glink != NULL && relplt != NULL)
3343 {
3344 if (resolv_vma)
3345 {
3346 /* Add a symbol for the main glink trampoline. */
86a4952b 3347 memset (s, 0, sizeof *s);
468392fb 3348 s->the_bfd = abfd;
6ba2a415 3349 s->flags = BSF_GLOBAL | BSF_SYNTHETIC;
468392fb
AM
3350 s->section = glink;
3351 s->value = resolv_vma - glink->vma;
3352 s->name = names;
3353 memcpy (names, "__glink_PLTresolve", sizeof ("__glink_PLTresolve"));
3354 names += sizeof ("__glink_PLTresolve");
3355 s++;
3356 count++;
3357 }
3358
3359 /* FIXME: It would be very much nicer to put sym@plt on the
3360 stub rather than on the glink branch table entry. The
3361 objdump disassembler would then use a sensible symbol
3362 name on plt calls. The difficulty in doing so is
3363 a) finding the stubs, and,
3364 b) matching stubs against plt entries, and,
3365 c) there can be multiple stubs for a given plt entry.
3366
3367 Solving (a) could be done by code scanning, but older
3368 ppc64 binaries used different stubs to current code.
3369 (b) is the tricky one since you need to known the toc
3370 pointer for at least one function that uses a pic stub to
3371 be able to calculate the plt address referenced.
3372 (c) means gdb would need to set multiple breakpoints (or
3373 find the glink branch itself) when setting breakpoints
3374 for pending shared library loads. */
3375 p = relplt->relocation;
3376 for (i = 0; i < plt_count; i++, p++)
3377 {
3378 size_t len;
3379
3380 *s = **p->sym_ptr_ptr;
3381 /* Undefined syms won't have BSF_LOCAL or BSF_GLOBAL set. Since
3382 we are defining a symbol, ensure one of them is set. */
3383 if ((s->flags & BSF_LOCAL) == 0)
3384 s->flags |= BSF_GLOBAL;
6ba2a415 3385 s->flags |= BSF_SYNTHETIC;
468392fb
AM
3386 s->section = glink;
3387 s->value = glink_vma - glink->vma;
3388 s->name = names;
3389 s->udata.p = NULL;
3390 len = strlen ((*p->sym_ptr_ptr)->name);
3391 memcpy (names, (*p->sym_ptr_ptr)->name, len);
3392 names += len;
e054468f
AM
3393 if (p->addend != 0)
3394 {
3395 memcpy (names, "+0x", sizeof ("+0x") - 1);
3396 names += sizeof ("+0x") - 1;
3397 bfd_sprintf_vma (abfd, names, p->addend);
3398 names += strlen (names);
3399 }
468392fb
AM
3400 memcpy (names, "@plt", sizeof ("@plt"));
3401 names += sizeof ("@plt");
3402 s++;
3403 glink_vma += 8;
3404 if (i >= 0x8000)
3405 glink_vma += 4;
3406 }
3407 count += plt_count;
3408 }
90e3cdf2
JJ
3409 }
3410
c9727e01 3411 done:
a7535cf3 3412 free (syms);
90e3cdf2
JJ
3413 return count;
3414}
5bd4f169 3415\f
65f38f15
AM
3416/* The following functions are specific to the ELF linker, while
3417 functions above are used generally. Those named ppc64_elf_* are
3418 called by the main ELF linker code. They appear in this file more
3419 or less in the order in which they are called. eg.
3420 ppc64_elf_check_relocs is called early in the link process,
3421 ppc64_elf_finish_dynamic_sections is one of the last functions
e86ce104
AM
3422 called.
3423
3424 PowerPC64-ELF uses a similar scheme to PowerPC64-XCOFF in that
3425 functions have both a function code symbol and a function descriptor
3426 symbol. A call to foo in a relocatable object file looks like:
3427
3428 . .text
3429 . x:
3430 . bl .foo
3431 . nop
3432
3433 The function definition in another object file might be:
3434
3435 . .section .opd
3436 . foo: .quad .foo
3437 . .quad .TOC.@tocbase
3438 . .quad 0
3439 .
3440 . .text
3441 . .foo: blr
3442
3443 When the linker resolves the call during a static link, the branch
3444 unsurprisingly just goes to .foo and the .opd information is unused.
3445 If the function definition is in a shared library, things are a little
3446 different: The call goes via a plt call stub, the opd information gets
3447 copied to the plt, and the linker patches the nop.
3448
3449 . x:
3450 . bl .foo_stub
3451 . ld 2,40(1)
3452 .
3453 .
3454 . .foo_stub:
3455 . addis 12,2,Lfoo@toc@ha # in practice, the call stub
411e1bfb 3456 . addi 12,12,Lfoo@toc@l # is slightly optimized, but
e86ce104
AM
3457 . std 2,40(1) # this is the general idea
3458 . ld 11,0(12)
3459 . ld 2,8(12)
3460 . mtctr 11
3461 . ld 11,16(12)
3462 . bctr
3463 .
3464 . .section .plt
3465 . Lfoo: reloc (R_PPC64_JMP_SLOT, foo)
3466
3467 The "reloc ()" notation is supposed to indicate that the linker emits
3468 an R_PPC64_JMP_SLOT reloc against foo. The dynamic linker does the opd
3469 copying.
3470
3471 What are the difficulties here? Well, firstly, the relocations
3472 examined by the linker in check_relocs are against the function code
3473 sym .foo, while the dynamic relocation in the plt is emitted against
3474 the function descriptor symbol, foo. Somewhere along the line, we need
3475 to carefully copy dynamic link information from one symbol to the other.
3476 Secondly, the generic part of the elf linker will make .foo a dynamic
3477 symbol as is normal for most other backends. We need foo dynamic
3478 instead, at least for an application final link. However, when
3479 creating a shared library containing foo, we need to have both symbols
3480 dynamic so that references to .foo are satisfied during the early
3481 stages of linking. Otherwise the linker might decide to pull in a
8387904d
AM
3482 definition from some other object, eg. a static library.
3483
3484 Update: As of August 2004, we support a new convention. Function
3485 calls may use the function descriptor symbol, ie. "bl foo". This
3486 behaves exactly as "bl .foo". */
65f38f15 3487
1d483afe 3488/* Of those relocs that might be copied as dynamic relocs, this function
58ac9f71
AM
3489 selects those that must be copied when linking a shared library,
3490 even when the symbol is local. */
65f38f15 3491
1d483afe
AM
3492static int
3493must_be_dyn_reloc (struct bfd_link_info *info,
3494 enum elf_ppc64_reloc_type r_type)
3495{
3496 switch (r_type)
3497 {
3498 default:
3499 return 1;
3500
3501 case R_PPC64_REL32:
3502 case R_PPC64_REL64:
3503 case R_PPC64_REL30:
3504 return 0;
3505
3506 case R_PPC64_TPREL16:
3507 case R_PPC64_TPREL16_LO:
3508 case R_PPC64_TPREL16_HI:
3509 case R_PPC64_TPREL16_HA:
3510 case R_PPC64_TPREL16_DS:
3511 case R_PPC64_TPREL16_LO_DS:
3512 case R_PPC64_TPREL16_HIGHER:
3513 case R_PPC64_TPREL16_HIGHERA:
3514 case R_PPC64_TPREL16_HIGHEST:
3515 case R_PPC64_TPREL16_HIGHESTA:
3516 case R_PPC64_TPREL64:
3517 return !info->executable;
3518 }
3519}
65f38f15 3520
f4656909
AM
3521/* If ELIMINATE_COPY_RELOCS is non-zero, the linker will try to avoid
3522 copying dynamic variables from a shared lib into an app's dynbss
3523 section, and instead use a dynamic relocation to point into the
5d35169e
AM
3524 shared lib. With code that gcc generates, it's vital that this be
3525 enabled; In the PowerPC64 ABI, the address of a function is actually
3526 the address of a function descriptor, which resides in the .opd
3527 section. gcc uses the descriptor directly rather than going via the
3528 GOT as some other ABI's do, which means that initialized function
3529 pointers must reference the descriptor. Thus, a function pointer
3530 initialized to the address of a function in a shared library will
3531 either require a copy reloc, or a dynamic reloc. Using a copy reloc
4cc11e76 3532 redefines the function descriptor symbol to point to the copy. This
5d35169e
AM
3533 presents a problem as a plt entry for that function is also
3534 initialized from the function descriptor symbol and the copy reloc
3535 may not be initialized first. */
a23b6845 3536#define ELIMINATE_COPY_RELOCS 1
f4656909 3537
721956f4 3538/* Section name for stubs is the associated section name plus this
29942be8
NC
3539 string. */
3540#define STUB_SUFFIX ".stub"
721956f4
AM
3541
3542/* Linker stubs.
3543 ppc_stub_long_branch:
3544 Used when a 14 bit branch (or even a 24 bit branch) can't reach its
3545 destination, but a 24 bit branch in a stub section will reach.
3546 . b dest
3547
3548 ppc_stub_plt_branch:
3549 Similar to the above, but a 24 bit branch in the stub section won't
3550 reach its destination.
87e226ce
AM
3551 . addis %r12,%r2,xxx@toc@ha
3552 . ld %r11,xxx@toc@l(%r12)
721956f4
AM
3553 . mtctr %r11
3554 . bctr
3555
3556 ppc_stub_plt_call:
2c66dc6c
AM
3557 Used to call a function in a shared library. If it so happens that
3558 the plt entry referenced crosses a 64k boundary, then an extra
ac2df442 3559 "addi %r12,%r12,xxx@toc@l" will be inserted before the "mtctr".
87e226ce 3560 . addis %r12,%r2,xxx@toc@ha
721956f4 3561 . std %r2,40(%r1)
87e226ce 3562 . ld %r11,xxx+0@toc@l(%r12)
721956f4 3563 . mtctr %r11
ac2df442 3564 . ld %r2,xxx+8@toc@l(%r12)
87e226ce 3565 . ld %r11,xxx+16@toc@l(%r12)
721956f4 3566 . bctr
ad8e1ba5
AM
3567
3568 ppc_stub_long_branch and ppc_stub_plt_branch may also have additional
3569 code to adjust the value and save r2 to support multiple toc sections.
3570 A ppc_stub_long_branch with an r2 offset looks like:
3571 . std %r2,40(%r1)
3572 . addis %r2,%r2,off@ha
3573 . addi %r2,%r2,off@l
3574 . b dest
3575
3576 A ppc_stub_plt_branch with an r2 offset looks like:
3577 . std %r2,40(%r1)
3578 . addis %r12,%r2,xxx@toc@ha
3579 . ld %r11,xxx@toc@l(%r12)
3580 . addis %r2,%r2,off@ha
3581 . addi %r2,%r2,off@l
3582 . mtctr %r11
3583 . bctr
ac2df442
AM
3584
3585 In cases where the "addis" instruction would add zero, the "addis" is
3586 omitted and following instructions modified slightly in some cases.
721956f4
AM
3587*/
3588
3589enum ppc_stub_type {
3590 ppc_stub_none,
3591 ppc_stub_long_branch,
ad8e1ba5 3592 ppc_stub_long_branch_r2off,
721956f4 3593 ppc_stub_plt_branch,
ad8e1ba5 3594 ppc_stub_plt_branch_r2off,
794e51c0
AM
3595 ppc_stub_plt_call,
3596 ppc_stub_plt_call_r2save
721956f4
AM
3597};
3598
3599struct ppc_stub_hash_entry {
3600
3601 /* Base hash table entry structure. */
3602 struct bfd_hash_entry root;
3603
ad8e1ba5
AM
3604 enum ppc_stub_type stub_type;
3605
721956f4
AM
3606 /* The stub section. */
3607 asection *stub_sec;
3608
3609 /* Offset within stub_sec of the beginning of this stub. */
3610 bfd_vma stub_offset;
3611
3612 /* Given the symbol's value and its section we can determine its final
3613 value when building the stubs (so the stub knows where to jump. */
3614 bfd_vma target_value;
3615 asection *target_section;
3616
721956f4
AM
3617 /* The symbol table entry, if any, that this was derived from. */
3618 struct ppc_link_hash_entry *h;
e054468f 3619 struct plt_entry *plt_ent;
721956f4 3620
411e1bfb
AM
3621 /* And the reloc addend that this was derived from. */
3622 bfd_vma addend;
3623
721956f4
AM
3624 /* Where this stub is being called from, or, in the case of combined
3625 stub sections, the first input section in the group. */
3626 asection *id_sec;
3627};
3628
3629struct ppc_branch_hash_entry {
3630
3631 /* Base hash table entry structure. */
3632 struct bfd_hash_entry root;
3633
c456f082 3634 /* Offset within branch lookup table. */
721956f4
AM
3635 unsigned int offset;
3636
3637 /* Generation marker. */
3638 unsigned int iter;
3639};
65f38f15
AM
3640
3641struct ppc_link_hash_entry
3642{
3643 struct elf_link_hash_entry elf;
3644
b3fac117
AM
3645 union {
3646 /* A pointer to the most recently used stub hash entry against this
3647 symbol. */
3648 struct ppc_stub_hash_entry *stub_cache;
3649
3650 /* A pointer to the next symbol starting with a '.' */
3651 struct ppc_link_hash_entry *next_dot_sym;
3652 } u;
721956f4 3653
65f38f15 3654 /* Track dynamic relocs copied for this symbol. */
6061a67d 3655 struct elf_dyn_relocs *dyn_relocs;
e86ce104 3656
721956f4 3657 /* Link between function code and descriptor symbols. */
34814b9f 3658 struct ppc_link_hash_entry *oh;
721956f4 3659
e86ce104
AM
3660 /* Flag function code and descriptor symbols. */
3661 unsigned int is_func:1;
3662 unsigned int is_func_descriptor:1;
908b32fc 3663 unsigned int fake:1;
411e1bfb 3664
c5614fa4
AM
3665 /* Whether global opd/toc sym has been adjusted or not.
3666 After ppc64_elf_edit_opd/ppc64_elf_edit_toc has run, this flag
3667 should be set for all globals defined in any opd/toc section. */
754021d0
AM
3668 unsigned int adjust_done:1;
3669
99877b66
AM
3670 /* Set if we twiddled this symbol to weak at some stage. */
3671 unsigned int was_undefined:1;
3672
411e1bfb 3673 /* Contexts in which symbol is used in the GOT (or TOC).
e7b938ca
AM
3674 TLS_GD .. TLS_EXPLICIT bits are or'd into the mask as the
3675 corresponding relocs are encountered during check_relocs.
3676 tls_optimize clears TLS_GD .. TLS_TPREL when optimizing to
3677 indicate the corresponding GOT entry type is not needed.
3678 tls_optimize may also set TLS_TPRELGD when a GD reloc turns into
3679 a TPREL one. We use a separate flag rather than setting TPREL
3680 just for convenience in distinguishing the two cases. */
3681#define TLS_GD 1 /* GD reloc. */
3682#define TLS_LD 2 /* LD reloc. */
3683#define TLS_TPREL 4 /* TPREL reloc, => IE. */
3684#define TLS_DTPREL 8 /* DTPREL reloc, => LD. */
3685#define TLS_TLS 16 /* Any TLS reloc. */
3686#define TLS_EXPLICIT 32 /* Marks TOC section TLS relocs. */
3687#define TLS_TPRELGD 64 /* TPREL reloc resulting from GD->IE. */
e054468f 3688#define PLT_IFUNC 128 /* STT_GNU_IFUNC. */
f961d9dd 3689 unsigned char tls_mask;
65f38f15
AM
3690};
3691
3692/* ppc64 ELF linker hash table. */
3693
3694struct ppc_link_hash_table
3695{
3696 struct elf_link_hash_table elf;
3697
721956f4
AM
3698 /* The stub hash table. */
3699 struct bfd_hash_table stub_hash_table;
3700
3701 /* Another hash table for plt_branch stubs. */
3702 struct bfd_hash_table branch_hash_table;
3703
3b421ab3
AM
3704 /* Hash table for function prologue tocsave. */
3705 htab_t tocsave_htab;
3706
721956f4
AM
3707 /* Linker stub bfd. */
3708 bfd *stub_bfd;
3709
3710 /* Linker call-backs. */
4ce794b7
AM
3711 asection * (*add_stub_section) (const char *, asection *);
3712 void (*layout_sections_again) (void);
721956f4
AM
3713
3714 /* Array to keep track of which stub sections have been created, and
3715 information on stub grouping. */
3716 struct map_stub {
3717 /* This is the section to which stubs in the group will be attached. */
3718 asection *link_sec;
3719 /* The stub section. */
3720 asection *stub_sec;
ad8e1ba5
AM
3721 /* Along with elf_gp, specifies the TOC pointer used in this group. */
3722 bfd_vma toc_off;
721956f4
AM
3723 } *stub_group;
3724
ad8e1ba5
AM
3725 /* Temp used when calculating TOC pointers. */
3726 bfd_vma toc_curr;
bf102f86
AM
3727 bfd *toc_bfd;
3728 asection *toc_first_sec;
ad8e1ba5 3729
8f3bab57
AM
3730 /* Highest input section id. */
3731 int top_id;
3732
734b6cf9
AM
3733 /* Highest output section index. */
3734 int top_index;
3735
b3fac117
AM
3736 /* Used when adding symbols. */
3737 struct ppc_link_hash_entry *dot_syms;
3738
734b6cf9
AM
3739 /* List of input sections for each output section. */
3740 asection **input_list;
721956f4 3741
65f38f15 3742 /* Short-cuts to get to dynamic linker sections. */
4ce794b7 3743 asection *got;
4ce794b7
AM
3744 asection *plt;
3745 asection *relplt;
e054468f
AM
3746 asection *iplt;
3747 asection *reliplt;
4ce794b7
AM
3748 asection *dynbss;
3749 asection *relbss;
3750 asection *glink;
82bd7b59 3751 asection *sfpr;
4ce794b7
AM
3752 asection *brlt;
3753 asection *relbrlt;
58d180e8 3754 asection *glink_eh_frame;
ec338859 3755
8387904d
AM
3756 /* Shortcut to .__tls_get_addr and __tls_get_addr. */
3757 struct ppc_link_hash_entry *tls_get_addr;
3758 struct ppc_link_hash_entry *tls_get_addr_fd;
411e1bfb 3759
927be08e
AM
3760 /* The size of reliplt used by got entry relocs. */
3761 bfd_size_type got_reli_size;
3762
9b5ecbd0 3763 /* Statistics. */
794e51c0 3764 unsigned long stub_count[ppc_stub_plt_call_r2save];
9b5ecbd0 3765
ee75fd95
AM
3766 /* Number of stubs against global syms. */
3767 unsigned long stub_globals;
3768
794e51c0
AM
3769 /* Alignment of PLT call stubs. */
3770 unsigned int plt_stub_align:4;
3771
9df0ef5f
AM
3772 /* Set if PLT call stubs should load r11. */
3773 unsigned int plt_static_chain:1;
3774
794e51c0
AM
3775 /* Set if PLT call stubs need a read-read barrier. */
3776 unsigned int plt_thread_safe:1;
3777
ad8e1ba5 3778 /* Set if we should emit symbols for stubs. */
99877b66 3779 unsigned int emit_stub_syms:1;
ad8e1ba5 3780
a7f2871e
AM
3781 /* Set if __tls_get_addr optimization should not be done. */
3782 unsigned int no_tls_get_addr_opt:1;
3783
4c52953f 3784 /* Support for multiple toc sections. */
33c0ec9d 3785 unsigned int do_multi_toc:1;
4c52953f 3786 unsigned int multi_toc_needed:1;
927be08e 3787 unsigned int second_toc_pass:1;
67f0cbdb 3788 unsigned int do_toc_opt:1;
4c52953f 3789
5d1634d7 3790 /* Set on error. */
99877b66 3791 unsigned int stub_error:1;
721956f4 3792
7d9616d7 3793 /* Temp used by ppc64_elf_process_dot_syms. */
99877b66 3794 unsigned int twiddled_syms:1;
721956f4
AM
3795
3796 /* Incremented every time we size stubs. */
3797 unsigned int stub_iteration;
5d1634d7 3798
87d72d41
AM
3799 /* Small local sym cache. */
3800 struct sym_cache sym_cache;
65f38f15
AM
3801};
3802
4c52953f
AM
3803/* Rename some of the generic section flags to better document how they
3804 are used here. */
b0dddeec
AM
3805
3806/* Nonzero if this section has TLS related relocations. */
3807#define has_tls_reloc sec_flg0
3808
3809/* Nonzero if this section has a call to __tls_get_addr. */
3810#define has_tls_get_addr_call sec_flg1
3811
3812/* Nonzero if this section has any toc or got relocs. */
3813#define has_toc_reloc sec_flg2
3814
3815/* Nonzero if this section has a call to another section that uses
3816 the toc or got. */
d77c8a4b 3817#define makes_toc_func_call sec_flg3
b0dddeec
AM
3818
3819/* Recursion protection when determining above flag. */
d77c8a4b 3820#define call_check_in_progress sec_flg4
70cc837d 3821#define call_check_done sec_flg5
4c52953f 3822
65f38f15
AM
3823/* Get the ppc64 ELF linker hash table from a link_info structure. */
3824
3825#define ppc_hash_table(p) \
4dfe6ac6
NC
3826 (elf_hash_table_id ((struct elf_link_hash_table *) ((p)->hash)) \
3827 == PPC64_ELF_DATA ? ((struct ppc_link_hash_table *) ((p)->hash)) : NULL)
65f38f15 3828
721956f4
AM
3829#define ppc_stub_hash_lookup(table, string, create, copy) \
3830 ((struct ppc_stub_hash_entry *) \
3831 bfd_hash_lookup ((table), (string), (create), (copy)))
3832
3833#define ppc_branch_hash_lookup(table, string, create, copy) \
3834 ((struct ppc_branch_hash_entry *) \
3835 bfd_hash_lookup ((table), (string), (create), (copy)))
3836
3837/* Create an entry in the stub hash table. */
3838
3839static struct bfd_hash_entry *
4ce794b7
AM
3840stub_hash_newfunc (struct bfd_hash_entry *entry,
3841 struct bfd_hash_table *table,
3842 const char *string)
721956f4
AM
3843{
3844 /* Allocate the structure if it has not already been allocated by a
3845 subclass. */
3846 if (entry == NULL)
3847 {
3848 entry = bfd_hash_allocate (table, sizeof (struct ppc_stub_hash_entry));
3849 if (entry == NULL)
3850 return entry;
3851 }
3852
3853 /* Call the allocation method of the superclass. */
3854 entry = bfd_hash_newfunc (entry, table, string);
3855 if (entry != NULL)
3856 {
3857 struct ppc_stub_hash_entry *eh;
3858
3859 /* Initialize the local fields. */
3860 eh = (struct ppc_stub_hash_entry *) entry;
ad8e1ba5 3861 eh->stub_type = ppc_stub_none;
721956f4
AM
3862 eh->stub_sec = NULL;
3863 eh->stub_offset = 0;
3864 eh->target_value = 0;
3865 eh->target_section = NULL;
721956f4
AM
3866 eh->h = NULL;
3867 eh->id_sec = NULL;
3868 }
3869
3870 return entry;
3871}
3872
3873/* Create an entry in the branch hash table. */
3874
3875static struct bfd_hash_entry *
4ce794b7
AM
3876branch_hash_newfunc (struct bfd_hash_entry *entry,
3877 struct bfd_hash_table *table,
3878 const char *string)
721956f4
AM
3879{
3880 /* Allocate the structure if it has not already been allocated by a
3881 subclass. */
3882 if (entry == NULL)
3883 {
3884 entry = bfd_hash_allocate (table, sizeof (struct ppc_branch_hash_entry));
3885 if (entry == NULL)
3886 return entry;
3887 }
3888
3889 /* Call the allocation method of the superclass. */
3890 entry = bfd_hash_newfunc (entry, table, string);
3891 if (entry != NULL)
3892 {
3893 struct ppc_branch_hash_entry *eh;
3894
3895 /* Initialize the local fields. */
3896 eh = (struct ppc_branch_hash_entry *) entry;
3897 eh->offset = 0;
3898 eh->iter = 0;
3899 }
3900
3901 return entry;
3902}
3903
65f38f15
AM
3904/* Create an entry in a ppc64 ELF linker hash table. */
3905
3906static struct bfd_hash_entry *
4ce794b7
AM
3907link_hash_newfunc (struct bfd_hash_entry *entry,
3908 struct bfd_hash_table *table,
3909 const char *string)
65f38f15
AM
3910{
3911 /* Allocate the structure if it has not already been allocated by a
3912 subclass. */
3913 if (entry == NULL)
3914 {
3915 entry = bfd_hash_allocate (table, sizeof (struct ppc_link_hash_entry));
3916 if (entry == NULL)
3917 return entry;
3918 }
3919
3920 /* Call the allocation method of the superclass. */
3921 entry = _bfd_elf_link_hash_newfunc (entry, table, string);
3922 if (entry != NULL)
3923 {
3924 struct ppc_link_hash_entry *eh = (struct ppc_link_hash_entry *) entry;
3925
b3fac117 3926 memset (&eh->u.stub_cache, 0,
908b32fc 3927 (sizeof (struct ppc_link_hash_entry)
b3fac117
AM
3928 - offsetof (struct ppc_link_hash_entry, u.stub_cache)));
3929
3930 /* When making function calls, old ABI code references function entry
3931 points (dot symbols), while new ABI code references the function
3932 descriptor symbol. We need to make any combination of reference and
3933 definition work together, without breaking archive linking.
3934
3935 For a defined function "foo" and an undefined call to "bar":
3936 An old object defines "foo" and ".foo", references ".bar" (possibly
3937 "bar" too).
3938 A new object defines "foo" and references "bar".
3939
3940 A new object thus has no problem with its undefined symbols being
3941 satisfied by definitions in an old object. On the other hand, the
3942 old object won't have ".bar" satisfied by a new object.
3943
3944 Keep a list of newly added dot-symbols. */
3945
3946 if (string[0] == '.')
3947 {
3948 struct ppc_link_hash_table *htab;
3949
3950 htab = (struct ppc_link_hash_table *) table;
3951 eh->u.next_dot_sym = htab->dot_syms;
3952 htab->dot_syms = eh;
3953 }
65f38f15
AM
3954 }
3955
3956 return entry;
3957}
3958
3b421ab3
AM
3959struct tocsave_entry {
3960 asection *sec;
3961 bfd_vma offset;
3962};
3963
3964static hashval_t
3965tocsave_htab_hash (const void *p)
3966{
3967 const struct tocsave_entry *e = (const struct tocsave_entry *) p;
3968 return ((bfd_vma)(intptr_t) e->sec ^ e->offset) >> 3;
3969}
3970
3971static int
3972tocsave_htab_eq (const void *p1, const void *p2)
3973{
3974 const struct tocsave_entry *e1 = (const struct tocsave_entry *) p1;
3975 const struct tocsave_entry *e2 = (const struct tocsave_entry *) p2;
3976 return e1->sec == e2->sec && e1->offset == e2->offset;
3977}
3978
65f38f15
AM
3979/* Create a ppc64 ELF linker hash table. */
3980
3981static struct bfd_link_hash_table *
4ce794b7 3982ppc64_elf_link_hash_table_create (bfd *abfd)
65f38f15
AM
3983{
3984 struct ppc_link_hash_table *htab;
3985 bfd_size_type amt = sizeof (struct ppc_link_hash_table);
3986
4ce794b7 3987 htab = bfd_zmalloc (amt);
65f38f15
AM
3988 if (htab == NULL)
3989 return NULL;
3990
66eb6687 3991 if (!_bfd_elf_link_hash_table_init (&htab->elf, abfd, link_hash_newfunc,
4dfe6ac6
NC
3992 sizeof (struct ppc_link_hash_entry),
3993 PPC64_ELF_DATA))
65f38f15 3994 {
e2d34d7d 3995 free (htab);
65f38f15
AM
3996 return NULL;
3997 }
3998
721956f4 3999 /* Init the stub hash table too. */
66eb6687
AM
4000 if (!bfd_hash_table_init (&htab->stub_hash_table, stub_hash_newfunc,
4001 sizeof (struct ppc_stub_hash_entry)))
721956f4
AM
4002 return NULL;
4003
4004 /* And the branch hash table. */
66eb6687
AM
4005 if (!bfd_hash_table_init (&htab->branch_hash_table, branch_hash_newfunc,
4006 sizeof (struct ppc_branch_hash_entry)))
721956f4
AM
4007 return NULL;
4008
3b421ab3
AM
4009 htab->tocsave_htab = htab_try_create (1024,
4010 tocsave_htab_hash,
4011 tocsave_htab_eq,
4012 NULL);
4013 if (htab->tocsave_htab == NULL)
4014 return NULL;
4015
3254fd24
AM
4016 /* Initializing two fields of the union is just cosmetic. We really
4017 only care about glist, but when compiled on a 32-bit host the
4018 bfd_vma fields are larger. Setting the bfd_vma to zero makes
4019 debugger inspection of these fields look nicer. */
a6aa5195
AM
4020 htab->elf.init_got_refcount.refcount = 0;
4021 htab->elf.init_got_refcount.glist = NULL;
4022 htab->elf.init_plt_refcount.refcount = 0;
4023 htab->elf.init_plt_refcount.glist = NULL;
4024 htab->elf.init_got_offset.offset = 0;
4025 htab->elf.init_got_offset.glist = NULL;
4026 htab->elf.init_plt_offset.offset = 0;
4027 htab->elf.init_plt_offset.glist = NULL;
3254fd24 4028
65f38f15
AM
4029 return &htab->elf.root;
4030}
4031
721956f4
AM
4032/* Free the derived linker hash table. */
4033
4034static void
4ce794b7 4035ppc64_elf_link_hash_table_free (struct bfd_link_hash_table *hash)
721956f4 4036{
3b421ab3 4037 struct ppc_link_hash_table *htab = (struct ppc_link_hash_table *) hash;
721956f4 4038
3b421ab3
AM
4039 bfd_hash_table_free (&htab->stub_hash_table);
4040 bfd_hash_table_free (&htab->branch_hash_table);
4041 if (htab->tocsave_htab)
4042 htab_delete (htab->tocsave_htab);
721956f4
AM
4043 _bfd_generic_link_hash_table_free (hash);
4044}
4045
e717da7e
AM
4046/* Satisfy the ELF linker by filling in some fields in our fake bfd. */
4047
4048void
4049ppc64_elf_init_stub_bfd (bfd *abfd, struct bfd_link_info *info)
4050{
4051 struct ppc_link_hash_table *htab;
4052
4053 elf_elfheader (abfd)->e_ident[EI_CLASS] = ELFCLASS64;
4054
4055/* Always hook our dynamic sections into the first bfd, which is the
4056 linker created stub bfd. This ensures that the GOT header is at
4057 the start of the output TOC section. */
4058 htab = ppc_hash_table (info);
4dfe6ac6
NC
4059 if (htab == NULL)
4060 return;
e717da7e
AM
4061 htab->stub_bfd = abfd;
4062 htab->elf.dynobj = abfd;
4063}
4064
721956f4
AM
4065/* Build a name for an entry in the stub hash table. */
4066
4067static char *
4ce794b7
AM
4068ppc_stub_name (const asection *input_section,
4069 const asection *sym_sec,
4070 const struct ppc_link_hash_entry *h,
4071 const Elf_Internal_Rela *rel)
721956f4
AM
4072{
4073 char *stub_name;
4074 bfd_size_type len;
4075
4076 /* rel->r_addend is actually 64 bit, but who uses more than +/- 2^31
4077 offsets from a sym as a branch target? In fact, we could
4078 probably assume the addend is always zero. */
4079 BFD_ASSERT (((int) rel->r_addend & 0xffffffff) == rel->r_addend);
4080
4081 if (h)
4082 {
4083 len = 8 + 1 + strlen (h->elf.root.root.string) + 1 + 8 + 1;
4084 stub_name = bfd_malloc (len);
46de2a7c
AM
4085 if (stub_name == NULL)
4086 return stub_name;
4087
4088 sprintf (stub_name, "%08x.%s+%x",
4089 input_section->id & 0xffffffff,
4090 h->elf.root.root.string,
4091 (int) rel->r_addend & 0xffffffff);
721956f4
AM
4092 }
4093 else
4094 {
ad8e1ba5 4095 len = 8 + 1 + 8 + 1 + 8 + 1 + 8 + 1;
721956f4 4096 stub_name = bfd_malloc (len);
46de2a7c
AM
4097 if (stub_name == NULL)
4098 return stub_name;
4099
4100 sprintf (stub_name, "%08x.%x:%x+%x",
4101 input_section->id & 0xffffffff,
4102 sym_sec->id & 0xffffffff,
4103 (int) ELF64_R_SYM (rel->r_info) & 0xffffffff,
4104 (int) rel->r_addend & 0xffffffff);
721956f4 4105 }
ee75fd95
AM
4106 if (stub_name[len - 2] == '+' && stub_name[len - 1] == '0')
4107 stub_name[len - 2] = 0;
721956f4
AM
4108 return stub_name;
4109}
4110
4111/* Look up an entry in the stub hash. Stub entries are cached because
4112 creating the stub name takes a bit of time. */
4113
4114static struct ppc_stub_hash_entry *
4ce794b7
AM
4115ppc_get_stub_entry (const asection *input_section,
4116 const asection *sym_sec,
039b3fef 4117 struct ppc_link_hash_entry *h,
4ce794b7
AM
4118 const Elf_Internal_Rela *rel,
4119 struct ppc_link_hash_table *htab)
721956f4
AM
4120{
4121 struct ppc_stub_hash_entry *stub_entry;
721956f4
AM
4122 const asection *id_sec;
4123
4124 /* If this input section is part of a group of sections sharing one
4125 stub section, then use the id of the first section in the group.
4126 Stub names need to include a section id, as there may well be
4127 more than one stub used to reach say, printf, and we need to
4128 distinguish between them. */
4129 id_sec = htab->stub_group[input_section->id].link_sec;
4130
b3fac117
AM
4131 if (h != NULL && h->u.stub_cache != NULL
4132 && h->u.stub_cache->h == h
4133 && h->u.stub_cache->id_sec == id_sec)
721956f4 4134 {
b3fac117 4135 stub_entry = h->u.stub_cache;
721956f4
AM
4136 }
4137 else
4138 {
4139 char *stub_name;
4140
4141 stub_name = ppc_stub_name (id_sec, sym_sec, h, rel);
4142 if (stub_name == NULL)
4143 return NULL;
4144
4145 stub_entry = ppc_stub_hash_lookup (&htab->stub_hash_table,
b34976b6 4146 stub_name, FALSE, FALSE);
721956f4 4147 if (h != NULL)
b3fac117 4148 h->u.stub_cache = stub_entry;
721956f4
AM
4149
4150 free (stub_name);
4151 }
4152
4153 return stub_entry;
4154}
4155
4156/* Add a new stub entry to the stub hash. Not all fields of the new
4157 stub entry are initialised. */
4158
4159static struct ppc_stub_hash_entry *
4ce794b7
AM
4160ppc_add_stub (const char *stub_name,
4161 asection *section,
25f53a85 4162 struct bfd_link_info *info)
721956f4 4163{
25f53a85 4164 struct ppc_link_hash_table *htab = ppc_hash_table (info);
721956f4
AM
4165 asection *link_sec;
4166 asection *stub_sec;
4167 struct ppc_stub_hash_entry *stub_entry;
4168
4169 link_sec = htab->stub_group[section->id].link_sec;
4170 stub_sec = htab->stub_group[section->id].stub_sec;
4171 if (stub_sec == NULL)
4172 {
4173 stub_sec = htab->stub_group[link_sec->id].stub_sec;
4174 if (stub_sec == NULL)
4175 {
d4c88bbb 4176 size_t namelen;
721956f4
AM
4177 bfd_size_type len;
4178 char *s_name;
4179
d4c88bbb
AM
4180 namelen = strlen (link_sec->name);
4181 len = namelen + sizeof (STUB_SUFFIX);
721956f4
AM
4182 s_name = bfd_alloc (htab->stub_bfd, len);
4183 if (s_name == NULL)
4184 return NULL;
4185
d4c88bbb
AM
4186 memcpy (s_name, link_sec->name, namelen);
4187 memcpy (s_name + namelen, STUB_SUFFIX, sizeof (STUB_SUFFIX));
721956f4
AM
4188 stub_sec = (*htab->add_stub_section) (s_name, link_sec);
4189 if (stub_sec == NULL)
4190 return NULL;
4191 htab->stub_group[link_sec->id].stub_sec = stub_sec;
4192 }
4193 htab->stub_group[section->id].stub_sec = stub_sec;
4194 }
4195
4196 /* Enter this entry into the linker stub hash table. */
4197 stub_entry = ppc_stub_hash_lookup (&htab->stub_hash_table, stub_name,
b34976b6 4198 TRUE, FALSE);
721956f4
AM
4199 if (stub_entry == NULL)
4200 {
8de848d8 4201 info->callbacks->einfo (_("%P: %B: cannot create stub entry %s\n"),
25f53a85 4202 section->owner, stub_name);
721956f4
AM
4203 return NULL;
4204 }
4205
4206 stub_entry->stub_sec = stub_sec;
4207 stub_entry->stub_offset = 0;
4208 stub_entry->id_sec = link_sec;
4209 return stub_entry;
4210}
4211
82bd7b59
AM
4212/* Create sections for linker generated code. */
4213
b34976b6 4214static bfd_boolean
4ce794b7 4215create_linkage_sections (bfd *dynobj, struct bfd_link_info *info)
82bd7b59
AM
4216{
4217 struct ppc_link_hash_table *htab;
4218 flagword flags;
4219
4220 htab = ppc_hash_table (info);
4dfe6ac6
NC
4221 if (htab == NULL)
4222 return FALSE;
82bd7b59
AM
4223
4224 /* Create .sfpr for code to save and restore fp regs. */
4225 flags = (SEC_ALLOC | SEC_LOAD | SEC_CODE | SEC_READONLY
4226 | SEC_HAS_CONTENTS | SEC_IN_MEMORY | SEC_LINKER_CREATED);
3496cb2a
L
4227 htab->sfpr = bfd_make_section_anyway_with_flags (dynobj, ".sfpr",
4228 flags);
82bd7b59 4229 if (htab->sfpr == NULL
82bd7b59 4230 || ! bfd_set_section_alignment (dynobj, htab->sfpr, 2))
b34976b6 4231 return FALSE;
82bd7b59 4232
721956f4 4233 /* Create .glink for lazy dynamic linking support. */
3496cb2a
L
4234 htab->glink = bfd_make_section_anyway_with_flags (dynobj, ".glink",
4235 flags);
4ce794b7 4236 if (htab->glink == NULL
ee4bf8d2 4237 || ! bfd_set_section_alignment (dynobj, htab->glink, 3))
b34976b6 4238 return FALSE;
82bd7b59 4239
58d180e8
AM
4240 if (!info->no_ld_generated_unwind_info)
4241 {
4242 flags = (SEC_ALLOC | SEC_LOAD | SEC_READONLY | SEC_HAS_CONTENTS
4243 | SEC_IN_MEMORY | SEC_LINKER_CREATED);
4244 htab->glink_eh_frame = bfd_make_section_anyway_with_flags (dynobj,
4245 ".eh_frame",
4246 flags);
4247 if (htab->glink_eh_frame == NULL
a0f49396 4248 || !bfd_set_section_alignment (dynobj, htab->glink_eh_frame, 2))
58d180e8
AM
4249 return FALSE;
4250 }
4251
e054468f
AM
4252 flags = SEC_ALLOC | SEC_LINKER_CREATED;
4253 htab->iplt = bfd_make_section_anyway_with_flags (dynobj, ".iplt", flags);
4254 if (htab->iplt == NULL
4255 || ! bfd_set_section_alignment (dynobj, htab->iplt, 3))
4256 return FALSE;
4257
4258 flags = (SEC_ALLOC | SEC_LOAD | SEC_READONLY
4259 | SEC_HAS_CONTENTS | SEC_IN_MEMORY | SEC_LINKER_CREATED);
4260 htab->reliplt = bfd_make_section_anyway_with_flags (dynobj,
4261 ".rela.iplt",
4262 flags);
4263 if (htab->reliplt == NULL
4264 || ! bfd_set_section_alignment (dynobj, htab->reliplt, 3))
4265 return FALSE;
4266
c456f082 4267 /* Create branch lookup table for plt_branch stubs. */
e4e0193e
AM
4268 flags = (SEC_ALLOC | SEC_LOAD
4269 | SEC_HAS_CONTENTS | SEC_IN_MEMORY | SEC_LINKER_CREATED);
4270 htab->brlt = bfd_make_section_anyway_with_flags (dynobj, ".branch_lt",
4271 flags);
4ce794b7 4272 if (htab->brlt == NULL
4ce794b7 4273 || ! bfd_set_section_alignment (dynobj, htab->brlt, 3))
b34976b6 4274 return FALSE;
721956f4 4275
e4e0193e 4276 if (!info->shared)
c456f082
AM
4277 return TRUE;
4278
e4e0193e
AM
4279 flags = (SEC_ALLOC | SEC_LOAD | SEC_READONLY
4280 | SEC_HAS_CONTENTS | SEC_IN_MEMORY | SEC_LINKER_CREATED);
4281 htab->relbrlt = bfd_make_section_anyway_with_flags (dynobj,
4282 ".rela.branch_lt",
4283 flags);
e054468f 4284 if (htab->relbrlt == NULL
c456f082
AM
4285 || ! bfd_set_section_alignment (dynobj, htab->relbrlt, 3))
4286 return FALSE;
4287
b34976b6 4288 return TRUE;
82bd7b59
AM
4289}
4290
e717da7e
AM
4291/* Create .got and .rela.got sections in ABFD, and .got in dynobj if
4292 not already done. */
65f38f15 4293
b34976b6 4294static bfd_boolean
e717da7e 4295create_got_section (bfd *abfd, struct bfd_link_info *info)
65f38f15 4296{
e717da7e
AM
4297 asection *got, *relgot;
4298 flagword flags;
4299 struct ppc_link_hash_table *htab = ppc_hash_table (info);
65f38f15 4300
0c8d6e5c 4301 if (!is_ppc64_elf (abfd))
0ffa91dd 4302 return FALSE;
4dfe6ac6
NC
4303 if (htab == NULL)
4304 return FALSE;
0ffa91dd 4305
4ce794b7 4306 if (!htab->got)
e717da7e
AM
4307 {
4308 if (! _bfd_elf_create_got_section (htab->elf.dynobj, info))
4309 return FALSE;
4310
4311 htab->got = bfd_get_section_by_name (htab->elf.dynobj, ".got");
4312 if (!htab->got)
4313 abort ();
4314 }
4315
4316 flags = (SEC_ALLOC | SEC_LOAD | SEC_HAS_CONTENTS | SEC_IN_MEMORY
4317 | SEC_LINKER_CREATED);
4318
c456f082 4319 got = bfd_make_section_anyway_with_flags (abfd, ".got", flags);
e717da7e 4320 if (!got
e717da7e
AM
4321 || !bfd_set_section_alignment (abfd, got, 3))
4322 return FALSE;
65f38f15 4323
c456f082
AM
4324 relgot = bfd_make_section_anyway_with_flags (abfd, ".rela.got",
4325 flags | SEC_READONLY);
e717da7e 4326 if (!relgot
e717da7e 4327 || ! bfd_set_section_alignment (abfd, relgot, 3))
b34976b6 4328 return FALSE;
e717da7e
AM
4329
4330 ppc64_elf_tdata (abfd)->got = got;
4331 ppc64_elf_tdata (abfd)->relgot = relgot;
b34976b6 4332 return TRUE;
65f38f15 4333}
5bd4f169 4334
82bd7b59 4335/* Create the dynamic sections, and set up shortcuts. */
5bd4f169 4336
b34976b6 4337static bfd_boolean
4ce794b7 4338ppc64_elf_create_dynamic_sections (bfd *dynobj, struct bfd_link_info *info)
5bd4f169 4339{
65f38f15 4340 struct ppc_link_hash_table *htab;
5bd4f169 4341
65f38f15 4342 if (!_bfd_elf_create_dynamic_sections (dynobj, info))
b34976b6 4343 return FALSE;
65f38f15 4344
e717da7e 4345 htab = ppc_hash_table (info);
4dfe6ac6
NC
4346 if (htab == NULL)
4347 return FALSE;
4348
e717da7e
AM
4349 if (!htab->got)
4350 htab->got = bfd_get_section_by_name (dynobj, ".got");
4ce794b7
AM
4351 htab->plt = bfd_get_section_by_name (dynobj, ".plt");
4352 htab->relplt = bfd_get_section_by_name (dynobj, ".rela.plt");
4353 htab->dynbss = bfd_get_section_by_name (dynobj, ".dynbss");
65f38f15 4354 if (!info->shared)
4ce794b7 4355 htab->relbss = bfd_get_section_by_name (dynobj, ".rela.bss");
65f38f15 4356
e717da7e 4357 if (!htab->got || !htab->plt || !htab->relplt || !htab->dynbss
4ce794b7 4358 || (!info->shared && !htab->relbss))
65f38f15
AM
4359 abort ();
4360
b34976b6 4361 return TRUE;
5bd4f169
AM
4362}
4363
b31867b6
AM
4364/* Follow indirect and warning symbol links. */
4365
4366static inline struct bfd_link_hash_entry *
4367follow_link (struct bfd_link_hash_entry *h)
4368{
4369 while (h->type == bfd_link_hash_indirect
4370 || h->type == bfd_link_hash_warning)
4371 h = h->u.i.link;
4372 return h;
4373}
4374
4375static inline struct elf_link_hash_entry *
4376elf_follow_link (struct elf_link_hash_entry *h)
4377{
4378 return (struct elf_link_hash_entry *) follow_link (&h->root);
4379}
4380
4381static inline struct ppc_link_hash_entry *
4382ppc_follow_link (struct ppc_link_hash_entry *h)
4383{
4384 return (struct ppc_link_hash_entry *) follow_link (&h->elf.root);
4385}
4386
40d16e0b
AM
4387/* Merge PLT info on FROM with that on TO. */
4388
4389static void
4390move_plt_plist (struct ppc_link_hash_entry *from,
4391 struct ppc_link_hash_entry *to)
4392{
4393 if (from->elf.plt.plist != NULL)
4394 {
4395 if (to->elf.plt.plist != NULL)
4396 {
4397 struct plt_entry **entp;
4398 struct plt_entry *ent;
4399
4400 for (entp = &from->elf.plt.plist; (ent = *entp) != NULL; )
4401 {
4402 struct plt_entry *dent;
4403
4404 for (dent = to->elf.plt.plist; dent != NULL; dent = dent->next)
4405 if (dent->addend == ent->addend)
4406 {
4407 dent->plt.refcount += ent->plt.refcount;
4408 *entp = ent->next;
4409 break;
4410 }
4411 if (dent == NULL)
4412 entp = &ent->next;
4413 }
4414 *entp = to->elf.plt.plist;
4415 }
4416
4417 to->elf.plt.plist = from->elf.plt.plist;
4418 from->elf.plt.plist = NULL;
4419 }
4420}
4421
65f38f15
AM
4422/* Copy the extra info we tack onto an elf_link_hash_entry. */
4423
4424static void
fcfa13d2
AM
4425ppc64_elf_copy_indirect_symbol (struct bfd_link_info *info,
4426 struct elf_link_hash_entry *dir,
4427 struct elf_link_hash_entry *ind)
65f38f15
AM
4428{
4429 struct ppc_link_hash_entry *edir, *eind;
4430
4431 edir = (struct ppc_link_hash_entry *) dir;
4432 eind = (struct ppc_link_hash_entry *) ind;
4433
c79d6685
AM
4434 edir->is_func |= eind->is_func;
4435 edir->is_func_descriptor |= eind->is_func_descriptor;
4436 edir->tls_mask |= eind->tls_mask;
4437 if (eind->oh != NULL)
4438 edir->oh = ppc_follow_link (eind->oh);
4439
4440 /* If called to transfer flags for a weakdef during processing
4441 of elf_adjust_dynamic_symbol, don't copy NON_GOT_REF.
4442 We clear it ourselves for ELIMINATE_COPY_RELOCS. */
4443 if (!(ELIMINATE_COPY_RELOCS
4444 && eind->elf.root.type != bfd_link_hash_indirect
4445 && edir->elf.dynamic_adjusted))
4446 edir->elf.non_got_ref |= eind->elf.non_got_ref;
4447
4448 edir->elf.ref_dynamic |= eind->elf.ref_dynamic;
4449 edir->elf.ref_regular |= eind->elf.ref_regular;
4450 edir->elf.ref_regular_nonweak |= eind->elf.ref_regular_nonweak;
4451 edir->elf.needs_plt |= eind->elf.needs_plt;
4452
411e1bfb 4453 /* Copy over any dynamic relocs we may have on the indirect sym. */
bbd7ec4a 4454 if (eind->dyn_relocs != NULL)
65f38f15 4455 {
bbd7ec4a
AM
4456 if (edir->dyn_relocs != NULL)
4457 {
6061a67d
AM
4458 struct elf_dyn_relocs **pp;
4459 struct elf_dyn_relocs *p;
bbd7ec4a 4460
fcfa13d2 4461 /* Add reloc counts against the indirect sym to the direct sym
bbd7ec4a
AM
4462 list. Merge any entries against the same section. */
4463 for (pp = &eind->dyn_relocs; (p = *pp) != NULL; )
4464 {
6061a67d 4465 struct elf_dyn_relocs *q;
bbd7ec4a
AM
4466
4467 for (q = edir->dyn_relocs; q != NULL; q = q->next)
4468 if (q->sec == p->sec)
4469 {
4470 q->pc_count += p->pc_count;
4471 q->count += p->count;
4472 *pp = p->next;
4473 break;
4474 }
4475 if (q == NULL)
4476 pp = &p->next;
4477 }
4478 *pp = edir->dyn_relocs;
4479 }
4480
65f38f15
AM
4481 edir->dyn_relocs = eind->dyn_relocs;
4482 eind->dyn_relocs = NULL;
4483 }
65f38f15 4484
68ba6d40
AM
4485 /* If we were called to copy over info for a weak sym, that's all.
4486 You might think dyn_relocs need not be copied over; After all,
4487 both syms will be dynamic or both non-dynamic so we're just
4488 moving reloc accounting around. However, ELIMINATE_COPY_RELOCS
4489 code in ppc64_elf_adjust_dynamic_symbol needs to check for
4490 dyn_relocs in read-only sections, and it does so on what is the
4491 DIR sym here. */
4492 if (eind->elf.root.type != bfd_link_hash_indirect)
4493 return;
4494
81848ca0
AM
4495 /* Copy over got entries that we may have already seen to the
4496 symbol which just became indirect. */
411e1bfb
AM
4497 if (eind->elf.got.glist != NULL)
4498 {
4499 if (edir->elf.got.glist != NULL)
4500 {
4501 struct got_entry **entp;
4502 struct got_entry *ent;
4503
4504 for (entp = &eind->elf.got.glist; (ent = *entp) != NULL; )
4505 {
4506 struct got_entry *dent;
4507
4508 for (dent = edir->elf.got.glist; dent != NULL; dent = dent->next)
4509 if (dent->addend == ent->addend
e717da7e 4510 && dent->owner == ent->owner
411e1bfb
AM
4511 && dent->tls_type == ent->tls_type)
4512 {
4513 dent->got.refcount += ent->got.refcount;
4514 *entp = ent->next;
4515 break;
4516 }
4517 if (dent == NULL)
4518 entp = &ent->next;
4519 }
4520 *entp = edir->elf.got.glist;
4521 }
4522
4523 edir->elf.got.glist = eind->elf.got.glist;
4524 eind->elf.got.glist = NULL;
4525 }
4526
4527 /* And plt entries. */
40d16e0b 4528 move_plt_plist (eind, edir);
411e1bfb 4529
fcfa13d2 4530 if (eind->elf.dynindx != -1)
411e1bfb 4531 {
fcfa13d2
AM
4532 if (edir->elf.dynindx != -1)
4533 _bfd_elf_strtab_delref (elf_hash_table (info)->dynstr,
4534 edir->elf.dynstr_index);
411e1bfb
AM
4535 edir->elf.dynindx = eind->elf.dynindx;
4536 edir->elf.dynstr_index = eind->elf.dynstr_index;
4537 eind->elf.dynindx = -1;
4538 eind->elf.dynstr_index = 0;
4539 }
411e1bfb
AM
4540}
4541
8387904d
AM
4542/* Find the function descriptor hash entry from the given function code
4543 hash entry FH. Link the entries via their OH fields. */
4544
4545static struct ppc_link_hash_entry *
b31867b6 4546lookup_fdh (struct ppc_link_hash_entry *fh, struct ppc_link_hash_table *htab)
8387904d
AM
4547{
4548 struct ppc_link_hash_entry *fdh = fh->oh;
4549
4550 if (fdh == NULL)
4551 {
4552 const char *fd_name = fh->elf.root.root.string + 1;
4553
4554 fdh = (struct ppc_link_hash_entry *)
4555 elf_link_hash_lookup (&htab->elf, fd_name, FALSE, FALSE, FALSE);
b31867b6
AM
4556 if (fdh == NULL)
4557 return fdh;
4558
4559 fdh->is_func_descriptor = 1;
4560 fdh->oh = fh;
4561 fh->is_func = 1;
4562 fh->oh = fdh;
8387904d
AM
4563 }
4564
b31867b6 4565 return ppc_follow_link (fdh);
8387904d
AM
4566}
4567
bb700d78
AM
4568/* Make a fake function descriptor sym for the code sym FH. */
4569
4570static struct ppc_link_hash_entry *
4571make_fdh (struct bfd_link_info *info,
908b32fc 4572 struct ppc_link_hash_entry *fh)
bb700d78
AM
4573{
4574 bfd *abfd;
4575 asymbol *newsym;
4576 struct bfd_link_hash_entry *bh;
4577 struct ppc_link_hash_entry *fdh;
4578
4579 abfd = fh->elf.root.u.undef.abfd;
4580 newsym = bfd_make_empty_symbol (abfd);
4581 newsym->name = fh->elf.root.root.string + 1;
4582 newsym->section = bfd_und_section_ptr;
4583 newsym->value = 0;
908b32fc 4584 newsym->flags = BSF_WEAK;
bb700d78
AM
4585
4586 bh = NULL;
4587 if (!_bfd_generic_link_add_one_symbol (info, abfd, newsym->name,
4588 newsym->flags, newsym->section,
4589 newsym->value, NULL, FALSE, FALSE,
4590 &bh))
4591 return NULL;
4592
4593 fdh = (struct ppc_link_hash_entry *) bh;
4594 fdh->elf.non_elf = 0;
908b32fc
AM
4595 fdh->fake = 1;
4596 fdh->is_func_descriptor = 1;
4597 fdh->oh = fh;
4598 fh->is_func = 1;
4599 fh->oh = fdh;
bb700d78
AM
4600 return fdh;
4601}
4602
8387904d
AM
4603/* Fix function descriptor symbols defined in .opd sections to be
4604 function type. */
555cd476
AM
4605
4606static bfd_boolean
c16153ae 4607ppc64_elf_add_symbol_hook (bfd *ibfd,
e054468f 4608 struct bfd_link_info *info,
555cd476 4609 Elf_Internal_Sym *isym,
b3fac117 4610 const char **name ATTRIBUTE_UNUSED,
555cd476
AM
4611 flagword *flags ATTRIBUTE_UNUSED,
4612 asection **sec,
4613 bfd_vma *value ATTRIBUTE_UNUSED)
4614{
f64b2e8d
NC
4615 if ((ibfd->flags & DYNAMIC) == 0
4616 && ELF_ST_BIND (isym->st_info) == STB_GNU_UNIQUE)
4617 elf_tdata (info->output_bfd)->has_gnu_symbols = TRUE;
4618
e054468f 4619 if (ELF_ST_TYPE (isym->st_info) == STT_GNU_IFUNC)
c16153ae
L
4620 {
4621 if ((ibfd->flags & DYNAMIC) == 0)
f64b2e8d 4622 elf_tdata (info->output_bfd)->has_gnu_symbols = TRUE;
c16153ae 4623 }
e054468f
AM
4624 else if (ELF_ST_TYPE (isym->st_info) == STT_FUNC)
4625 ;
4626 else if (*sec != NULL
70cc837d 4627 && strcmp ((*sec)->name, ".opd") == 0)
555cd476 4628 isym->st_info = ELF_ST_INFO (ELF_ST_BIND (isym->st_info), STT_FUNC);
433817dd 4629
555cd476
AM
4630 return TRUE;
4631}
4632
8387904d 4633/* This function makes an old ABI object reference to ".bar" cause the
908b32fc
AM
4634 inclusion of a new ABI object archive that defines "bar".
4635 NAME is a symbol defined in an archive. Return a symbol in the hash
4636 table that might be satisfied by the archive symbols. */
8387904d
AM
4637
4638static struct elf_link_hash_entry *
4639ppc64_elf_archive_symbol_lookup (bfd *abfd,
4640 struct bfd_link_info *info,
4641 const char *name)
4642{
4643 struct elf_link_hash_entry *h;
4644 char *dot_name;
4645 size_t len;
4646
4647 h = _bfd_elf_archive_symbol_lookup (abfd, info, name);
908b32fc
AM
4648 if (h != NULL
4649 /* Don't return this sym if it is a fake function descriptor
4650 created by add_symbol_adjust. */
4651 && !(h->root.type == bfd_link_hash_undefweak
4652 && ((struct ppc_link_hash_entry *) h)->fake))
8387904d
AM
4653 return h;
4654
4655 if (name[0] == '.')
4656 return h;
4657
4658 len = strlen (name);
4659 dot_name = bfd_alloc (abfd, len + 2);
4660 if (dot_name == NULL)
4661 return (struct elf_link_hash_entry *) 0 - 1;
4662 dot_name[0] = '.';
4663 memcpy (dot_name + 1, name, len + 1);
4664 h = _bfd_elf_archive_symbol_lookup (abfd, info, dot_name);
4665 bfd_release (abfd, dot_name);
4666 return h;
4667}
4668
4669/* This function satisfies all old ABI object references to ".bar" if a
99877b66
AM
4670 new ABI object defines "bar". Well, at least, undefined dot symbols
4671 are made weak. This stops later archive searches from including an
4672 object if we already have a function descriptor definition. It also
35b0ce59
AM
4673 prevents the linker complaining about undefined symbols.
4674 We also check and correct mismatched symbol visibility here. The
4675 most restrictive visibility of the function descriptor and the
4676 function entry symbol is used. */
8387904d
AM
4677
4678static bfd_boolean
b3fac117 4679add_symbol_adjust (struct ppc_link_hash_entry *eh, struct bfd_link_info *info)
8387904d 4680{
8387904d
AM
4681 struct ppc_link_hash_table *htab;
4682 struct ppc_link_hash_entry *fdh;
4683
b3fac117 4684 if (eh->elf.root.type == bfd_link_hash_indirect)
8387904d
AM
4685 return TRUE;
4686
b3fac117
AM
4687 if (eh->elf.root.type == bfd_link_hash_warning)
4688 eh = (struct ppc_link_hash_entry *) eh->elf.root.u.i.link;
8387904d 4689
b3fac117
AM
4690 if (eh->elf.root.root.string[0] != '.')
4691 abort ();
8387904d 4692
b3fac117 4693 htab = ppc_hash_table (info);
4dfe6ac6
NC
4694 if (htab == NULL)
4695 return FALSE;
4696
b31867b6
AM
4697 fdh = lookup_fdh (eh, htab);
4698 if (fdh == NULL)
4699 {
4700 if (!info->relocatable
4701 && (eh->elf.root.type == bfd_link_hash_undefined
4702 || eh->elf.root.type == bfd_link_hash_undefweak)
4703 && eh->elf.ref_regular)
4704 {
4705 /* Make an undefweak function descriptor sym, which is enough to
4706 pull in an --as-needed shared lib, but won't cause link
4707 errors. Archives are handled elsewhere. */
4708 fdh = make_fdh (info, eh);
4709 if (fdh == NULL)
4710 return FALSE;
4711 fdh->elf.ref_regular = 1;
4712 }
bb700d78 4713 }
b31867b6 4714 else
8387904d 4715 {
35b0ce59
AM
4716 unsigned entry_vis = ELF_ST_VISIBILITY (eh->elf.other) - 1;
4717 unsigned descr_vis = ELF_ST_VISIBILITY (fdh->elf.other) - 1;
4718 if (entry_vis < descr_vis)
4719 fdh->elf.other += entry_vis - descr_vis;
4720 else if (entry_vis > descr_vis)
4721 eh->elf.other += descr_vis - entry_vis;
4722
e87d886e
AM
4723 if ((fdh->elf.root.type == bfd_link_hash_defined
4724 || fdh->elf.root.type == bfd_link_hash_defweak)
4725 && eh->elf.root.type == bfd_link_hash_undefined)
35b0ce59
AM
4726 {
4727 eh->elf.root.type = bfd_link_hash_undefweak;
4728 eh->was_undefined = 1;
4729 htab->twiddled_syms = 1;
4730 }
8387904d 4731 }
99877b66 4732
8387904d
AM
4733 return TRUE;
4734}
4735
b3fac117
AM
4736/* Process list of dot-symbols we made in link_hash_newfunc. */
4737
8387904d 4738static bfd_boolean
7d9616d7 4739ppc64_elf_process_dot_syms (bfd *ibfd, struct bfd_link_info *info)
8387904d 4740{
99877b66 4741 struct ppc_link_hash_table *htab;
b3fac117 4742 struct ppc_link_hash_entry **p, *eh;
433817dd 4743
0c8d6e5c 4744 if (!is_ppc64_elf (info->output_bfd))
35b0ce59 4745 return TRUE;
4dfe6ac6
NC
4746 htab = ppc_hash_table (info);
4747 if (htab == NULL)
4748 return FALSE;
35b0ce59 4749
0c8d6e5c 4750 if (is_ppc64_elf (ibfd))
b3fac117
AM
4751 {
4752 p = &htab->dot_syms;
4753 while ((eh = *p) != NULL)
4754 {
4755 *p = NULL;
4756 if (!add_symbol_adjust (eh, info))
4757 return FALSE;
4758 p = &eh->u.next_dot_sym;
4759 }
4760 }
4761
4762 /* Clear the list for non-ppc64 input files. */
4763 p = &htab->dot_syms;
4764 while ((eh = *p) != NULL)
4765 {
4766 *p = NULL;
4767 p = &eh->u.next_dot_sym;
4768 }
99877b66
AM
4769
4770 /* We need to fix the undefs list for any syms we have twiddled to
4771 undef_weak. */
4772 if (htab->twiddled_syms)
4773 {
77cfaee6 4774 bfd_link_repair_undef_list (&htab->elf.root);
99877b66
AM
4775 htab->twiddled_syms = 0;
4776 }
b3fac117 4777 return TRUE;
8387904d
AM
4778}
4779
97fed1c9
JJ
4780/* Undo hash table changes when an --as-needed input file is determined
4781 not to be needed. */
4782
4783static bfd_boolean
4784ppc64_elf_as_needed_cleanup (bfd *ibfd ATTRIBUTE_UNUSED,
4785 struct bfd_link_info *info)
4786{
4dfe6ac6
NC
4787 struct ppc_link_hash_table *htab = ppc_hash_table (info);
4788
4789 if (htab == NULL)
4790 return FALSE;
4791
4792 htab->dot_syms = NULL;
97fed1c9
JJ
4793 return TRUE;
4794}
4795
aa374f67
AM
4796/* If --just-symbols against a final linked binary, then assume we need
4797 toc adjusting stubs when calling functions defined there. */
4798
4799static void
4800ppc64_elf_link_just_syms (asection *sec, struct bfd_link_info *info)
4801{
4802 if ((sec->flags & SEC_CODE) != 0
4803 && (sec->owner->flags & (EXEC_P | DYNAMIC)) != 0
4804 && is_ppc64_elf (sec->owner))
4805 {
4806 asection *got = bfd_get_section_by_name (sec->owner, ".got");
4807 if (got != NULL
4808 && got->size >= elf_backend_got_header_size
4809 && bfd_get_section_by_name (sec->owner, ".opd") != NULL)
4810 sec->has_toc_reloc = 1;
4811 }
4812 _bfd_elf_link_just_syms (sec, info);
4813}
4814
e054468f 4815static struct plt_entry **
4ce794b7
AM
4816update_local_sym_info (bfd *abfd, Elf_Internal_Shdr *symtab_hdr,
4817 unsigned long r_symndx, bfd_vma r_addend, int tls_type)
411e1bfb
AM
4818{
4819 struct got_entry **local_got_ents = elf_local_got_ents (abfd);
e054468f 4820 struct plt_entry **local_plt;
f961d9dd 4821 unsigned char *local_got_tls_masks;
411e1bfb
AM
4822
4823 if (local_got_ents == NULL)
4824 {
4825 bfd_size_type size = symtab_hdr->sh_info;
4826
e054468f
AM
4827 size *= (sizeof (*local_got_ents)
4828 + sizeof (*local_plt)
4829 + sizeof (*local_got_tls_masks));
4ce794b7 4830 local_got_ents = bfd_zalloc (abfd, size);
411e1bfb 4831 if (local_got_ents == NULL)
e054468f 4832 return NULL;
411e1bfb
AM
4833 elf_local_got_ents (abfd) = local_got_ents;
4834 }
4835
e054468f 4836 if ((tls_type & (PLT_IFUNC | TLS_EXPLICIT)) == 0)
411e1bfb
AM
4837 {
4838 struct got_entry *ent;
4839
4840 for (ent = local_got_ents[r_symndx]; ent != NULL; ent = ent->next)
e717da7e
AM
4841 if (ent->addend == r_addend
4842 && ent->owner == abfd
4843 && ent->tls_type == tls_type)
411e1bfb
AM
4844 break;
4845 if (ent == NULL)
4846 {
4847 bfd_size_type amt = sizeof (*ent);
4ce794b7 4848 ent = bfd_alloc (abfd, amt);
411e1bfb
AM
4849 if (ent == NULL)
4850 return FALSE;
4851 ent->next = local_got_ents[r_symndx];
4852 ent->addend = r_addend;
e717da7e 4853 ent->owner = abfd;
411e1bfb 4854 ent->tls_type = tls_type;
927be08e 4855 ent->is_indirect = FALSE;
411e1bfb
AM
4856 ent->got.refcount = 0;
4857 local_got_ents[r_symndx] = ent;
4858 }
4859 ent->got.refcount += 1;
4860 }
4861
e054468f 4862 local_plt = (struct plt_entry **) (local_got_ents + symtab_hdr->sh_info);
f961d9dd 4863 local_got_tls_masks = (unsigned char *) (local_plt + symtab_hdr->sh_info);
e7b938ca 4864 local_got_tls_masks[r_symndx] |= tls_type;
e054468f
AM
4865
4866 return local_plt + r_symndx;
65f38f15
AM
4867}
4868
411e1bfb 4869static bfd_boolean
e054468f 4870update_plt_info (bfd *abfd, struct plt_entry **plist, bfd_vma addend)
1e2f5b6e 4871{
411e1bfb 4872 struct plt_entry *ent;
1e2f5b6e 4873
e054468f 4874 for (ent = *plist; ent != NULL; ent = ent->next)
411e1bfb
AM
4875 if (ent->addend == addend)
4876 break;
4877 if (ent == NULL)
1e2f5b6e 4878 {
411e1bfb 4879 bfd_size_type amt = sizeof (*ent);
4ce794b7 4880 ent = bfd_alloc (abfd, amt);
411e1bfb
AM
4881 if (ent == NULL)
4882 return FALSE;
e054468f 4883 ent->next = *plist;
411e1bfb
AM
4884 ent->addend = addend;
4885 ent->plt.refcount = 0;
e054468f 4886 *plist = ent;
1e2f5b6e 4887 }
411e1bfb 4888 ent->plt.refcount += 1;
b34976b6 4889 return TRUE;
1e2f5b6e
AM
4890}
4891
e054468f
AM
4892static bfd_boolean
4893is_branch_reloc (enum elf_ppc64_reloc_type r_type)
4894{
4895 return (r_type == R_PPC64_REL24
4896 || r_type == R_PPC64_REL14
4897 || r_type == R_PPC64_REL14_BRTAKEN
4898 || r_type == R_PPC64_REL14_BRNTAKEN
4899 || r_type == R_PPC64_ADDR24
4900 || r_type == R_PPC64_ADDR14
4901 || r_type == R_PPC64_ADDR14_BRTAKEN
4902 || r_type == R_PPC64_ADDR14_BRNTAKEN);
4903}
4904
5bd4f169 4905/* Look through the relocs for a section during the first phase, and
65f38f15 4906 calculate needed space in the global offset table, procedure
5d1634d7 4907 linkage table, and dynamic reloc sections. */
5bd4f169 4908
b34976b6 4909static bfd_boolean
4ce794b7
AM
4910ppc64_elf_check_relocs (bfd *abfd, struct bfd_link_info *info,
4911 asection *sec, const Elf_Internal_Rela *relocs)
5bd4f169 4912{
65f38f15 4913 struct ppc_link_hash_table *htab;
5bd4f169 4914 Elf_Internal_Shdr *symtab_hdr;
c7e2358a 4915 struct elf_link_hash_entry **sym_hashes;
5bd4f169
AM
4916 const Elf_Internal_Rela *rel;
4917 const Elf_Internal_Rela *rel_end;
5bd4f169 4918 asection *sreloc;
1e2f5b6e 4919 asection **opd_sym_map;
3a71aa26 4920 struct elf_link_hash_entry *tga, *dottga;
5bd4f169 4921
1049f94e 4922 if (info->relocatable)
b34976b6 4923 return TRUE;
5bd4f169 4924
680a3378
AM
4925 /* Don't do anything special with non-loaded, non-alloced sections.
4926 In particular, any relocs in such sections should not affect GOT
4927 and PLT reference counting (ie. we don't allow them to create GOT
4928 or PLT entries), there's no possibility or desire to optimize TLS
4929 relocs, and there's not much point in propagating relocs to shared
4930 libs that the dynamic linker won't relocate. */
4931 if ((sec->flags & SEC_ALLOC) == 0)
4932 return TRUE;
4933
0c8d6e5c 4934 BFD_ASSERT (is_ppc64_elf (abfd));
0ffa91dd 4935
65f38f15 4936 htab = ppc_hash_table (info);
4dfe6ac6
NC
4937 if (htab == NULL)
4938 return FALSE;
4939
3a71aa26
AM
4940 tga = elf_link_hash_lookup (&htab->elf, "__tls_get_addr",
4941 FALSE, FALSE, TRUE);
4942 dottga = elf_link_hash_lookup (&htab->elf, ".__tls_get_addr",
4943 FALSE, FALSE, TRUE);
0ffa91dd 4944 symtab_hdr = &elf_symtab_hdr (abfd);
5bd4f169 4945 sym_hashes = elf_sym_hashes (abfd);
5bd4f169 4946 sreloc = NULL;
1e2f5b6e 4947 opd_sym_map = NULL;
70cc837d 4948 if (strcmp (sec->name, ".opd") == 0)
1e2f5b6e
AM
4949 {
4950 /* Garbage collection needs some extra help with .opd sections.
4951 We don't want to necessarily keep everything referenced by
4952 relocs in .opd, as that would keep all functions. Instead,
4953 if we reference an .opd symbol (a function descriptor), we
4954 want to keep the function code symbol's section. This is
4955 easy for global symbols, but for local syms we need to keep
74f0fb50 4956 information about the associated function section. */
1e2f5b6e
AM
4957 bfd_size_type amt;
4958
74f0fb50 4959 amt = sec->size * sizeof (*opd_sym_map) / 8;
4ce794b7 4960 opd_sym_map = bfd_zalloc (abfd, amt);
1e2f5b6e 4961 if (opd_sym_map == NULL)
b34976b6 4962 return FALSE;
74f0fb50 4963 ppc64_elf_section_data (sec)->u.opd.func_sec = opd_sym_map;
7c8fe5c4
AM
4964 BFD_ASSERT (ppc64_elf_section_data (sec)->sec_type == sec_normal);
4965 ppc64_elf_section_data (sec)->sec_type = sec_opd;
1e2f5b6e 4966 }
5bd4f169 4967
82bd7b59
AM
4968 if (htab->sfpr == NULL
4969 && !create_linkage_sections (htab->elf.dynobj, info))
b34976b6 4970 return FALSE;
82bd7b59 4971
5bd4f169
AM
4972 rel_end = relocs + sec->reloc_count;
4973 for (rel = relocs; rel < rel_end; rel++)
4974 {
4975 unsigned long r_symndx;
4976 struct elf_link_hash_entry *h;
04c9666a 4977 enum elf_ppc64_reloc_type r_type;
727fc41e 4978 int tls_type;
7c8fe5c4 4979 struct _ppc64_elf_section_data *ppc64_sec;
e054468f 4980 struct plt_entry **ifunc;
5bd4f169
AM
4981
4982 r_symndx = ELF64_R_SYM (rel->r_info);
4983 if (r_symndx < symtab_hdr->sh_info)
4984 h = NULL;
4985 else
973a3492
L
4986 {
4987 h = sym_hashes[r_symndx - symtab_hdr->sh_info];
b31867b6 4988 h = elf_follow_link (h);
973a3492 4989 }
5bd4f169 4990
727fc41e 4991 tls_type = 0;
e054468f 4992 ifunc = NULL;
25f23106
AM
4993 if (h != NULL)
4994 {
4995 if (h->type == STT_GNU_IFUNC)
4996 {
4997 h->needs_plt = 1;
4998 ifunc = &h->plt.plist;
4999 }
5000 }
5001 else
5002 {
5003 Elf_Internal_Sym *isym = bfd_sym_from_r_symndx (&htab->sym_cache,
5004 abfd, r_symndx);
5005 if (isym == NULL)
5006 return FALSE;
5007
5008 if (ELF_ST_TYPE (isym->st_info) == STT_GNU_IFUNC)
5009 {
5010 ifunc = update_local_sym_info (abfd, symtab_hdr, r_symndx,
5011 rel->r_addend, PLT_IFUNC);
5012 if (ifunc == NULL)
5013 return FALSE;
5014 }
5015 }
4ce794b7 5016 r_type = ELF64_R_TYPE (rel->r_info);
e054468f
AM
5017 if (is_branch_reloc (r_type))
5018 {
5019 if (h != NULL && (h == tga || h == dottga))
5020 {
5021 if (rel != relocs
5022 && (ELF64_R_TYPE (rel[-1].r_info) == R_PPC64_TLSGD
5023 || ELF64_R_TYPE (rel[-1].r_info) == R_PPC64_TLSLD))
5024 /* We have a new-style __tls_get_addr call with a marker
5025 reloc. */
5026 ;
5027 else
5028 /* Mark this section as having an old-style call. */
5029 sec->has_tls_get_addr_call = 1;
5030 }
727fc41e 5031
e054468f 5032 /* STT_GNU_IFUNC symbols must have a PLT entry. */
e054468f
AM
5033 if (ifunc != NULL
5034 && !update_plt_info (abfd, ifunc, rel->r_addend))
5035 return FALSE;
5036 }
727fc41e 5037
a33d1f77 5038 switch (r_type)
5bd4f169 5039 {
727fc41e
AM
5040 case R_PPC64_TLSGD:
5041 case R_PPC64_TLSLD:
5042 /* These special tls relocs tie a call to __tls_get_addr with
5043 its parameter symbol. */
5044 break;
5045
411e1bfb
AM
5046 case R_PPC64_GOT_TLSLD16:
5047 case R_PPC64_GOT_TLSLD16_LO:
5048 case R_PPC64_GOT_TLSLD16_HI:
5049 case R_PPC64_GOT_TLSLD16_HA:
951fd09b 5050 tls_type = TLS_TLS | TLS_LD;
411e1bfb
AM
5051 goto dogottls;
5052
5053 case R_PPC64_GOT_TLSGD16:
5054 case R_PPC64_GOT_TLSGD16_LO:
5055 case R_PPC64_GOT_TLSGD16_HI:
5056 case R_PPC64_GOT_TLSGD16_HA:
951fd09b 5057 tls_type = TLS_TLS | TLS_GD;
411e1bfb
AM
5058 goto dogottls;
5059
5060 case R_PPC64_GOT_TPREL16_DS:
5061 case R_PPC64_GOT_TPREL16_LO_DS:
5062 case R_PPC64_GOT_TPREL16_HI:
5063 case R_PPC64_GOT_TPREL16_HA:
1d483afe 5064 if (!info->executable)
411e1bfb
AM
5065 info->flags |= DF_STATIC_TLS;
5066 tls_type = TLS_TLS | TLS_TPREL;
5067 goto dogottls;
5068
5069 case R_PPC64_GOT_DTPREL16_DS:
5070 case R_PPC64_GOT_DTPREL16_LO_DS:
5071 case R_PPC64_GOT_DTPREL16_HI:
5072 case R_PPC64_GOT_DTPREL16_HA:
5073 tls_type = TLS_TLS | TLS_DTPREL;
5074 dogottls:
5075 sec->has_tls_reloc = 1;
5076 /* Fall thru */
5077
5bd4f169 5078 case R_PPC64_GOT16:
5bd4f169 5079 case R_PPC64_GOT16_DS:
65f38f15
AM
5080 case R_PPC64_GOT16_HA:
5081 case R_PPC64_GOT16_HI:
5082 case R_PPC64_GOT16_LO:
5bd4f169 5083 case R_PPC64_GOT16_LO_DS:
65f38f15 5084 /* This symbol requires a global offset table entry. */
4c52953f 5085 sec->has_toc_reloc = 1;
33c0ec9d
AM
5086 if (r_type == R_PPC64_GOT_TLSLD16
5087 || r_type == R_PPC64_GOT_TLSGD16
5088 || r_type == R_PPC64_GOT_TPREL16_DS
5089 || r_type == R_PPC64_GOT_DTPREL16_DS
5090 || r_type == R_PPC64_GOT16
5091 || r_type == R_PPC64_GOT16_DS)
5092 {
5093 htab->do_multi_toc = 1;
d77c8a4b 5094 ppc64_elf_tdata (abfd)->has_small_toc_reloc = 1;
33c0ec9d
AM
5095 }
5096
e717da7e
AM
5097 if (ppc64_elf_tdata (abfd)->got == NULL
5098 && !create_got_section (abfd, info))
b34976b6 5099 return FALSE;
5bd4f169
AM
5100
5101 if (h != NULL)
5102 {
411e1bfb
AM
5103 struct ppc_link_hash_entry *eh;
5104 struct got_entry *ent;
65f38f15 5105
411e1bfb
AM
5106 eh = (struct ppc_link_hash_entry *) h;
5107 for (ent = eh->elf.got.glist; ent != NULL; ent = ent->next)
5108 if (ent->addend == rel->r_addend
e717da7e 5109 && ent->owner == abfd
411e1bfb
AM
5110 && ent->tls_type == tls_type)
5111 break;
5112 if (ent == NULL)
5bd4f169 5113 {
411e1bfb 5114 bfd_size_type amt = sizeof (*ent);
4ce794b7 5115 ent = bfd_alloc (abfd, amt);
411e1bfb 5116 if (ent == NULL)
b34976b6 5117 return FALSE;
411e1bfb
AM
5118 ent->next = eh->elf.got.glist;
5119 ent->addend = rel->r_addend;
e717da7e 5120 ent->owner = abfd;
411e1bfb 5121 ent->tls_type = tls_type;
927be08e 5122 ent->is_indirect = FALSE;
411e1bfb
AM
5123 ent->got.refcount = 0;
5124 eh->elf.got.glist = ent;
5bd4f169 5125 }
411e1bfb 5126 ent->got.refcount += 1;
e7b938ca 5127 eh->tls_mask |= tls_type;
5bd4f169 5128 }
411e1bfb
AM
5129 else
5130 /* This is a global offset table entry for a local symbol. */
5131 if (!update_local_sym_info (abfd, symtab_hdr, r_symndx,
5132 rel->r_addend, tls_type))
5133 return FALSE;
5bd4f169
AM
5134 break;
5135
5bd4f169 5136 case R_PPC64_PLT16_HA:
65f38f15
AM
5137 case R_PPC64_PLT16_HI:
5138 case R_PPC64_PLT16_LO:
5139 case R_PPC64_PLT32:
5140 case R_PPC64_PLT64:
5bd4f169 5141 /* This symbol requires a procedure linkage table entry. We
3fad3c7c
AM
5142 actually build the entry in adjust_dynamic_symbol,
5143 because this might be a case of linking PIC code without
5144 linking in any dynamic objects, in which case we don't
5145 need to generate a procedure linkage table after all. */
5bd4f169
AM
5146 if (h == NULL)
5147 {
5148 /* It does not make sense to have a procedure linkage
3fad3c7c 5149 table entry for a local symbol. */
5bd4f169 5150 bfd_set_error (bfd_error_bad_value);
b34976b6 5151 return FALSE;
5bd4f169 5152 }
411e1bfb 5153 else
e054468f
AM
5154 {
5155 if (!update_plt_info (abfd, &h->plt.plist, rel->r_addend))
5156 return FALSE;
5157 h->needs_plt = 1;
5158 if (h->root.root.string[0] == '.'
5159 && h->root.root.string[1] != '\0')
5160 ((struct ppc_link_hash_entry *) h)->is_func = 1;
5161 }
5bd4f169
AM
5162 break;
5163
5164 /* The following relocations don't need to propagate the
5165 relocation if linking a shared object since they are
5166 section relative. */
5167 case R_PPC64_SECTOFF:
5168 case R_PPC64_SECTOFF_LO:
5169 case R_PPC64_SECTOFF_HI:
5170 case R_PPC64_SECTOFF_HA:
5171 case R_PPC64_SECTOFF_DS:
5172 case R_PPC64_SECTOFF_LO_DS:
411e1bfb
AM
5173 case R_PPC64_DTPREL16:
5174 case R_PPC64_DTPREL16_LO:
5175 case R_PPC64_DTPREL16_HI:
5176 case R_PPC64_DTPREL16_HA:
5177 case R_PPC64_DTPREL16_DS:
5178 case R_PPC64_DTPREL16_LO_DS:
5179 case R_PPC64_DTPREL16_HIGHER:
5180 case R_PPC64_DTPREL16_HIGHERA:
5181 case R_PPC64_DTPREL16_HIGHEST:
5182 case R_PPC64_DTPREL16_HIGHESTA:
5bd4f169
AM
5183 break;
5184
ad8e1ba5 5185 /* Nor do these. */
25f23106
AM
5186 case R_PPC64_REL16:
5187 case R_PPC64_REL16_LO:
5188 case R_PPC64_REL16_HI:
5189 case R_PPC64_REL16_HA:
5190 break;
5191
ad8e1ba5 5192 case R_PPC64_TOC16:
33c0ec9d
AM
5193 case R_PPC64_TOC16_DS:
5194 htab->do_multi_toc = 1;
d77c8a4b 5195 ppc64_elf_tdata (abfd)->has_small_toc_reloc = 1;
ad8e1ba5
AM
5196 case R_PPC64_TOC16_LO:
5197 case R_PPC64_TOC16_HI:
5198 case R_PPC64_TOC16_HA:
ad8e1ba5 5199 case R_PPC64_TOC16_LO_DS:
4c52953f 5200 sec->has_toc_reloc = 1;
ad8e1ba5
AM
5201 break;
5202
5bd4f169
AM
5203 /* This relocation describes the C++ object vtable hierarchy.
5204 Reconstruct it for later use during GC. */
5205 case R_PPC64_GNU_VTINHERIT:
c152c796 5206 if (!bfd_elf_gc_record_vtinherit (abfd, sec, h, rel->r_offset))
b34976b6 5207 return FALSE;
5bd4f169
AM
5208 break;
5209
5210 /* This relocation describes which C++ vtable entries are actually
5211 used. Record for later use during GC. */
5212 case R_PPC64_GNU_VTENTRY:
d17e0c6e
JB
5213 BFD_ASSERT (h != NULL);
5214 if (h != NULL
5215 && !bfd_elf_gc_record_vtentry (abfd, sec, h, rel->r_addend))
b34976b6 5216 return FALSE;
5bd4f169
AM
5217 break;
5218
721956f4
AM
5219 case R_PPC64_REL14:
5220 case R_PPC64_REL14_BRTAKEN:
5221 case R_PPC64_REL14_BRNTAKEN:
220c76dd
AM
5222 {
5223 asection *dest = NULL;
5224
5225 /* Heuristic: If jumping outside our section, chances are
5226 we are going to need a stub. */
5227 if (h != NULL)
5228 {
5229 /* If the sym is weak it may be overridden later, so
5230 don't assume we know where a weak sym lives. */
5231 if (h->root.type == bfd_link_hash_defined)
5232 dest = h->root.u.def.section;
5233 }
5234 else
87d72d41
AM
5235 {
5236 Elf_Internal_Sym *isym;
5237
5238 isym = bfd_sym_from_r_symndx (&htab->sym_cache,
5239 abfd, r_symndx);
5240 if (isym == NULL)
5241 return FALSE;
5242
5243 dest = bfd_section_from_elf_index (abfd, isym->st_shndx);
5244 }
5245
220c76dd 5246 if (dest != sec)
7c8fe5c4 5247 ppc64_elf_section_data (sec)->has_14bit_branch = 1;
220c76dd 5248 }
721956f4
AM
5249 /* Fall through. */
5250
5d1634d7 5251 case R_PPC64_REL24:
e054468f 5252 if (h != NULL && ifunc == NULL)
5d1634d7
AM
5253 {
5254 /* We may need a .plt entry if the function this reloc
5255 refers to is in a shared lib. */
e054468f 5256 if (!update_plt_info (abfd, &h->plt.plist, rel->r_addend))
411e1bfb 5257 return FALSE;
e054468f
AM
5258 h->needs_plt = 1;
5259 if (h->root.root.string[0] == '.'
5260 && h->root.root.string[1] != '\0')
5261 ((struct ppc_link_hash_entry *) h)->is_func = 1;
3a71aa26 5262 if (h == tga || h == dottga)
411e1bfb 5263 sec->has_tls_reloc = 1;
411e1bfb
AM
5264 }
5265 break;
5266
5267 case R_PPC64_TPREL64:
5268 tls_type = TLS_EXPLICIT | TLS_TLS | TLS_TPREL;
1d483afe 5269 if (!info->executable)
411e1bfb
AM
5270 info->flags |= DF_STATIC_TLS;
5271 goto dotlstoc;
5272
5273 case R_PPC64_DTPMOD64:
5274 if (rel + 1 < rel_end
5275 && rel[1].r_info == ELF64_R_INFO (r_symndx, R_PPC64_DTPREL64)
5276 && rel[1].r_offset == rel->r_offset + 8)
951fd09b 5277 tls_type = TLS_EXPLICIT | TLS_TLS | TLS_GD;
411e1bfb 5278 else
951fd09b 5279 tls_type = TLS_EXPLICIT | TLS_TLS | TLS_LD;
411e1bfb
AM
5280 goto dotlstoc;
5281
5282 case R_PPC64_DTPREL64:
5283 tls_type = TLS_EXPLICIT | TLS_TLS | TLS_DTPREL;
5284 if (rel != relocs
5285 && rel[-1].r_info == ELF64_R_INFO (r_symndx, R_PPC64_DTPMOD64)
5286 && rel[-1].r_offset == rel->r_offset - 8)
5287 /* This is the second reloc of a dtpmod, dtprel pair.
5288 Don't mark with TLS_DTPREL. */
5289 goto dodyn;
5290
5291 dotlstoc:
5292 sec->has_tls_reloc = 1;
5293 if (h != NULL)
5294 {
5295 struct ppc_link_hash_entry *eh;
5296 eh = (struct ppc_link_hash_entry *) h;
e7b938ca 5297 eh->tls_mask |= tls_type;
411e1bfb
AM
5298 }
5299 else
5300 if (!update_local_sym_info (abfd, symtab_hdr, r_symndx,
5301 rel->r_addend, tls_type))
5302 return FALSE;
5303
7c8fe5c4
AM
5304 ppc64_sec = ppc64_elf_section_data (sec);
5305 if (ppc64_sec->sec_type != sec_toc)
411e1bfb 5306 {
3a71aa26
AM
5307 bfd_size_type amt;
5308
e7b938ca 5309 /* One extra to simplify get_tls_mask. */
3a71aa26
AM
5310 amt = sec->size * sizeof (unsigned) / 8 + sizeof (unsigned);
5311 ppc64_sec->u.toc.symndx = bfd_zalloc (abfd, amt);
5312 if (ppc64_sec->u.toc.symndx == NULL)
5313 return FALSE;
5314 amt = sec->size * sizeof (bfd_vma) / 8;
5315 ppc64_sec->u.toc.add = bfd_zalloc (abfd, amt);
5316 if (ppc64_sec->u.toc.add == NULL)
411e1bfb 5317 return FALSE;
7c8fe5c4
AM
5318 BFD_ASSERT (ppc64_sec->sec_type == sec_normal);
5319 ppc64_sec->sec_type = sec_toc;
411e1bfb
AM
5320 }
5321 BFD_ASSERT (rel->r_offset % 8 == 0);
3a71aa26
AM
5322 ppc64_sec->u.toc.symndx[rel->r_offset / 8] = r_symndx;
5323 ppc64_sec->u.toc.add[rel->r_offset / 8] = rel->r_addend;
951fd09b
AM
5324
5325 /* Mark the second slot of a GD or LD entry.
5326 -1 to indicate GD and -2 to indicate LD. */
5327 if (tls_type == (TLS_EXPLICIT | TLS_TLS | TLS_GD))
3a71aa26 5328 ppc64_sec->u.toc.symndx[rel->r_offset / 8 + 1] = -1;
951fd09b 5329 else if (tls_type == (TLS_EXPLICIT | TLS_TLS | TLS_LD))
3a71aa26 5330 ppc64_sec->u.toc.symndx[rel->r_offset / 8 + 1] = -2;
411e1bfb
AM
5331 goto dodyn;
5332
5333 case R_PPC64_TPREL16:
5334 case R_PPC64_TPREL16_LO:
5335 case R_PPC64_TPREL16_HI:
5336 case R_PPC64_TPREL16_HA:
5337 case R_PPC64_TPREL16_DS:
5338 case R_PPC64_TPREL16_LO_DS:
5339 case R_PPC64_TPREL16_HIGHER:
5340 case R_PPC64_TPREL16_HIGHERA:
5341 case R_PPC64_TPREL16_HIGHEST:
5342 case R_PPC64_TPREL16_HIGHESTA:
5343 if (info->shared)
5344 {
1d483afe
AM
5345 if (!info->executable)
5346 info->flags |= DF_STATIC_TLS;
411e1bfb 5347 goto dodyn;
5d1634d7
AM
5348 }
5349 break;
5350
e86ce104 5351 case R_PPC64_ADDR64:
1e2f5b6e 5352 if (opd_sym_map != NULL
1e2f5b6e 5353 && rel + 1 < rel_end
4ce794b7 5354 && ELF64_R_TYPE ((rel + 1)->r_info) == R_PPC64_TOC)
1e2f5b6e 5355 {
8387904d
AM
5356 if (h != NULL)
5357 {
5358 if (h->root.root.string[0] == '.'
5359 && h->root.root.string[1] != 0
b31867b6 5360 && lookup_fdh ((struct ppc_link_hash_entry *) h, htab))
8387904d
AM
5361 ;
5362 else
5363 ((struct ppc_link_hash_entry *) h)->is_func = 1;
5364 }
5365 else
5366 {
5367 asection *s;
87d72d41 5368 Elf_Internal_Sym *isym;
1e2f5b6e 5369
87d72d41
AM
5370 isym = bfd_sym_from_r_symndx (&htab->sym_cache,
5371 abfd, r_symndx);
5372 if (isym == NULL)
8387904d 5373 return FALSE;
87d72d41
AM
5374
5375 s = bfd_section_from_elf_index (abfd, isym->st_shndx);
5376 if (s != NULL && s != sec)
3f764659 5377 opd_sym_map[rel->r_offset / 8] = s;
8387904d 5378 }
1e2f5b6e 5379 }
e86ce104
AM
5380 /* Fall through. */
5381
04c9666a 5382 case R_PPC64_REL30:
5bd4f169 5383 case R_PPC64_REL32:
04c9666a 5384 case R_PPC64_REL64:
65f38f15
AM
5385 case R_PPC64_ADDR14:
5386 case R_PPC64_ADDR14_BRNTAKEN:
5387 case R_PPC64_ADDR14_BRTAKEN:
5388 case R_PPC64_ADDR16:
5389 case R_PPC64_ADDR16_DS:
5390 case R_PPC64_ADDR16_HA:
5391 case R_PPC64_ADDR16_HI:
5392 case R_PPC64_ADDR16_HIGHER:
5393 case R_PPC64_ADDR16_HIGHERA:
5394 case R_PPC64_ADDR16_HIGHEST:
5395 case R_PPC64_ADDR16_HIGHESTA:
5396 case R_PPC64_ADDR16_LO:
5397 case R_PPC64_ADDR16_LO_DS:
5398 case R_PPC64_ADDR24:
65f38f15 5399 case R_PPC64_ADDR32:
65f38f15
AM
5400 case R_PPC64_UADDR16:
5401 case R_PPC64_UADDR32:
5402 case R_PPC64_UADDR64:
5bd4f169 5403 case R_PPC64_TOC:
81848ca0
AM
5404 if (h != NULL && !info->shared)
5405 /* We may need a copy reloc. */
f5385ebf 5406 h->non_got_ref = 1;
81848ca0 5407
41bd81ab 5408 /* Don't propagate .opd relocs. */
1e2f5b6e 5409 if (NO_OPD_RELOCS && opd_sym_map != NULL)
e86ce104 5410 break;
e86ce104 5411
65f38f15
AM
5412 /* If we are creating a shared library, and this is a reloc
5413 against a global symbol, or a non PC relative reloc
5414 against a local symbol, then we need to copy the reloc
5415 into the shared library. However, if we are linking with
5416 -Bsymbolic, we do not need to copy a reloc against a
5417 global symbol which is defined in an object we are
5418 including in the link (i.e., DEF_REGULAR is set). At
5419 this point we have not seen all the input files, so it is
5420 possible that DEF_REGULAR is not set now but will be set
5421 later (it is never cleared). In case of a weak definition,
5422 DEF_REGULAR may be cleared later by a strong definition in
5423 a shared library. We account for that possibility below by
f4656909 5424 storing information in the dyn_relocs field of the hash
65f38f15
AM
5425 table entry. A similar situation occurs when creating
5426 shared libraries and symbol visibility changes render the
5427 symbol local.
5428
5429 If on the other hand, we are creating an executable, we
5430 may need to keep relocations for symbols satisfied by a
5431 dynamic library if we manage to avoid copy relocs for the
5432 symbol. */
411e1bfb 5433 dodyn:
65f38f15 5434 if ((info->shared
1d483afe 5435 && (must_be_dyn_reloc (info, r_type)
65f38f15
AM
5436 || (h != NULL
5437 && (! info->symbolic
5438 || h->root.type == bfd_link_hash_defweak
f5385ebf 5439 || !h->def_regular))))
f4656909
AM
5440 || (ELIMINATE_COPY_RELOCS
5441 && !info->shared
65f38f15
AM
5442 && h != NULL
5443 && (h->root.type == bfd_link_hash_defweak
25f23106
AM
5444 || !h->def_regular))
5445 || (!info->shared
5446 && ifunc != NULL))
5bd4f169 5447 {
6061a67d
AM
5448 struct elf_dyn_relocs *p;
5449 struct elf_dyn_relocs **head;
ec338859 5450
65f38f15
AM
5451 /* We must copy these reloc types into the output file.
5452 Create a reloc section in dynobj and make room for
5453 this reloc. */
5bd4f169
AM
5454 if (sreloc == NULL)
5455 {
83bac4b0
NC
5456 sreloc = _bfd_elf_make_dynamic_reloc_section
5457 (sec, htab->elf.dynobj, 3, abfd, /*rela?*/ TRUE);
65f38f15 5458
5bd4f169 5459 if (sreloc == NULL)
83bac4b0 5460 return FALSE;
5bd4f169
AM
5461 }
5462
65f38f15
AM
5463 /* If this is a global symbol, we count the number of
5464 relocations we need for this symbol. */
5465 if (h != NULL)
5466 {
ec338859 5467 head = &((struct ppc_link_hash_entry *) h)->dyn_relocs;
65f38f15
AM
5468 }
5469 else
5470 {
ec338859
AM
5471 /* Track dynamic relocs needed for local syms too.
5472 We really need local syms available to do this
5473 easily. Oh well. */
ec338859 5474 asection *s;
6edfbbad 5475 void *vpp;
87d72d41 5476 Elf_Internal_Sym *isym;
6edfbbad 5477
87d72d41
AM
5478 isym = bfd_sym_from_r_symndx (&htab->sym_cache,
5479 abfd, r_symndx);
5480 if (isym == NULL)
b34976b6 5481 return FALSE;
ec338859 5482
87d72d41
AM
5483 s = bfd_section_from_elf_index (abfd, isym->st_shndx);
5484 if (s == NULL)
5485 s = sec;
5486
6edfbbad 5487 vpp = &elf_section_data (s)->local_dynrel;
6061a67d 5488 head = (struct elf_dyn_relocs **) vpp;
65f38f15 5489 }
ec338859
AM
5490
5491 p = *head;
5492 if (p == NULL || p->sec != sec)
5493 {
4ce794b7 5494 p = bfd_alloc (htab->elf.dynobj, sizeof *p);
ec338859 5495 if (p == NULL)
b34976b6 5496 return FALSE;
ec338859
AM
5497 p->next = *head;
5498 *head = p;
5499 p->sec = sec;
5500 p->count = 0;
5501 p->pc_count = 0;
5502 }
5503
5504 p->count += 1;
1d483afe 5505 if (!must_be_dyn_reloc (info, r_type))
ec338859 5506 p->pc_count += 1;
65f38f15 5507 }
5bd4f169 5508 break;
65f38f15
AM
5509
5510 default:
96e0dda4 5511 break;
5bd4f169
AM
5512 }
5513 }
5514
b34976b6 5515 return TRUE;
5bd4f169
AM
5516}
5517
8387904d
AM
5518/* OFFSET in OPD_SEC specifies a function descriptor. Return the address
5519 of the code entry point, and its section. */
5520
5521static bfd_vma
5522opd_entry_value (asection *opd_sec,
5523 bfd_vma offset,
5524 asection **code_sec,
aef36ac1
AM
5525 bfd_vma *code_off,
5526 bfd_boolean in_code_sec)
8387904d
AM
5527{
5528 bfd *opd_bfd = opd_sec->owner;
8860955f 5529 Elf_Internal_Rela *relocs;
8387904d 5530 Elf_Internal_Rela *lo, *hi, *look;
645ea6a9 5531 bfd_vma val;
8387904d 5532
9f296da3
AM
5533 /* No relocs implies we are linking a --just-symbols object, or looking
5534 at a final linked executable with addr2line or somesuch. */
4b85d634
AM
5535 if (opd_sec->reloc_count == 0)
5536 {
aef36ac1 5537 char buf[8];
3b36f7e6 5538
aef36ac1
AM
5539 if (!bfd_get_section_contents (opd_bfd, opd_sec, buf, offset, 8))
5540 return (bfd_vma) -1;
ee1e4ede 5541
aef36ac1
AM
5542 val = bfd_get_64 (opd_bfd, buf);
5543 if (code_sec != NULL)
5544 {
5545 asection *sec, *likely = NULL;
ee1e4ede 5546
aef36ac1 5547 if (in_code_sec)
4b85d634 5548 {
aef36ac1
AM
5549 sec = *code_sec;
5550 if (sec->vma <= val
5551 && val < sec->vma + sec->size)
5552 likely = sec;
5553 else
5554 val = -1;
5555 }
5556 else
5557 for (sec = opd_bfd->sections; sec != NULL; sec = sec->next)
5558 if (sec->vma <= val
5559 && (sec->flags & SEC_LOAD) != 0
5560 && (sec->flags & SEC_ALLOC) != 0)
5561 likely = sec;
5562 if (likely != NULL)
5563 {
5564 *code_sec = likely;
5565 if (code_off != NULL)
5566 *code_off = val - likely->vma;
4b85d634
AM
5567 }
5568 }
aef36ac1 5569 return val;
4b85d634
AM
5570 }
5571
0c8d6e5c 5572 BFD_ASSERT (is_ppc64_elf (opd_bfd));
0ffa91dd 5573
8860955f
AM
5574 relocs = ppc64_elf_tdata (opd_bfd)->opd_relocs;
5575 if (relocs == NULL)
5576 relocs = _bfd_elf_link_read_relocs (opd_bfd, opd_sec, NULL, NULL, TRUE);
645ea6a9 5577
8387904d 5578 /* Go find the opd reloc at the sym address. */
8860955f 5579 lo = relocs;
8387904d
AM
5580 BFD_ASSERT (lo != NULL);
5581 hi = lo + opd_sec->reloc_count - 1; /* ignore last reloc */
645ea6a9 5582 val = (bfd_vma) -1;
8387904d
AM
5583 while (lo < hi)
5584 {
5585 look = lo + (hi - lo) / 2;
5586 if (look->r_offset < offset)
5587 lo = look + 1;
5588 else if (look->r_offset > offset)
5589 hi = look;
5590 else
5591 {
0ffa91dd
NC
5592 Elf_Internal_Shdr *symtab_hdr = &elf_symtab_hdr (opd_bfd);
5593
8387904d
AM
5594 if (ELF64_R_TYPE (look->r_info) == R_PPC64_ADDR64
5595 && ELF64_R_TYPE ((look + 1)->r_info) == R_PPC64_TOC)
5596 {
5597 unsigned long symndx = ELF64_R_SYM (look->r_info);
8387904d
AM
5598 asection *sec;
5599
62599110
AM
5600 if (symndx < symtab_hdr->sh_info
5601 || elf_sym_hashes (opd_bfd) == NULL)
8387904d
AM
5602 {
5603 Elf_Internal_Sym *sym;
5604
5605 sym = (Elf_Internal_Sym *) symtab_hdr->contents;
5606 if (sym == NULL)
5607 {
62599110
AM
5608 size_t symcnt = symtab_hdr->sh_info;
5609 if (elf_sym_hashes (opd_bfd) == NULL)
5610 symcnt = symtab_hdr->sh_size / symtab_hdr->sh_entsize;
5611 sym = bfd_elf_get_elf_syms (opd_bfd, symtab_hdr, symcnt,
8387904d
AM
5612 0, NULL, NULL, NULL);
5613 if (sym == NULL)
645ea6a9 5614 break;
8387904d
AM
5615 symtab_hdr->contents = (bfd_byte *) sym;
5616 }
5617
5618 sym += symndx;
5619 val = sym->st_value;
cb33740c 5620 sec = bfd_section_from_elf_index (opd_bfd, sym->st_shndx);
8387904d
AM
5621 BFD_ASSERT ((sec->flags & SEC_MERGE) == 0);
5622 }
5623 else
5624 {
5625 struct elf_link_hash_entry **sym_hashes;
5626 struct elf_link_hash_entry *rh;
5627
5628 sym_hashes = elf_sym_hashes (opd_bfd);
5629 rh = sym_hashes[symndx - symtab_hdr->sh_info];
b31867b6 5630 rh = elf_follow_link (rh);
8387904d
AM
5631 BFD_ASSERT (rh->root.type == bfd_link_hash_defined
5632 || rh->root.type == bfd_link_hash_defweak);
5633 val = rh->root.u.def.value;
5634 sec = rh->root.u.def.section;
5635 }
5636 val += look->r_addend;
5637 if (code_off != NULL)
5638 *code_off = val;
5639 if (code_sec != NULL)
aef36ac1
AM
5640 {
5641 if (in_code_sec && *code_sec != sec)
5642 return -1;
5643 else
5644 *code_sec = sec;
5645 }
8387904d
AM
5646 if (sec != NULL && sec->output_section != NULL)
5647 val += sec->output_section->vma + sec->output_offset;
8387904d
AM
5648 }
5649 break;
5650 }
5651 }
645ea6a9 5652
645ea6a9 5653 return val;
8387904d
AM
5654}
5655
aef36ac1
AM
5656/* If the ELF symbol SYM might be a function in SEC, return the
5657 function size and set *CODE_OFF to the function's entry point,
5658 otherwise return zero. */
9f296da3 5659
aef36ac1
AM
5660static bfd_size_type
5661ppc64_elf_maybe_function_sym (const asymbol *sym, asection *sec,
5662 bfd_vma *code_off)
9f296da3 5663{
aef36ac1
AM
5664 bfd_size_type size;
5665
5666 if ((sym->flags & (BSF_SECTION_SYM | BSF_FILE | BSF_OBJECT
5667 | BSF_THREAD_LOCAL | BSF_RELC | BSF_SRELC)) != 0)
5668 return 0;
5669
5670 size = 0;
5671 if (!(sym->flags & BSF_SYNTHETIC))
5672 size = ((elf_symbol_type *) sym)->internal_elf_sym.st_size;
5673
5674 if (strcmp (sym->section->name, ".opd") == 0)
9f296da3 5675 {
aef36ac1
AM
5676 if (opd_entry_value (sym->section, sym->value,
5677 &sec, code_off, TRUE) == (bfd_vma) -1)
5678 return 0;
5679 /* An old ABI binary with dot-syms has a size of 24 on the .opd
5680 symbol. This size has nothing to do with the code size of the
5681 function, which is what we're supposed to return, but the
5682 code size isn't available without looking up the dot-sym.
5683 However, doing that would be a waste of time particularly
5684 since elf_find_function will look at the dot-sym anyway.
5685 Now, elf_find_function will keep the largest size of any
5686 function sym found at the code address of interest, so return
5687 1 here to avoid it incorrectly caching a larger function size
5688 for a small function. This does mean we return the wrong
5689 size for a new-ABI function of size 24, but all that does is
5690 disable caching for such functions. */
5691 if (size == 24)
5692 size = 1;
9f296da3 5693 }
aef36ac1
AM
5694 else
5695 {
5696 if (sym->section != sec)
5697 return 0;
5698 *code_off = sym->value;
5699 }
5700 if (size == 0)
5701 size = 1;
5702 return size;
9f296da3
AM
5703}
5704
854b41e7
AM
5705/* Return true if symbol is defined in a regular object file. */
5706
5707static bfd_boolean
5708is_static_defined (struct elf_link_hash_entry *h)
5709{
5710 return ((h->root.type == bfd_link_hash_defined
5711 || h->root.type == bfd_link_hash_defweak)
5712 && h->root.u.def.section != NULL
5713 && h->root.u.def.section->output_section != NULL);
5714}
5715
b31867b6
AM
5716/* If FDH is a function descriptor symbol, return the associated code
5717 entry symbol if it is defined. Return NULL otherwise. */
5718
5719static struct ppc_link_hash_entry *
5720defined_code_entry (struct ppc_link_hash_entry *fdh)
5721{
5722 if (fdh->is_func_descriptor)
5723 {
5724 struct ppc_link_hash_entry *fh = ppc_follow_link (fdh->oh);
5725 if (fh->elf.root.type == bfd_link_hash_defined
5726 || fh->elf.root.type == bfd_link_hash_defweak)
5727 return fh;
5728 }
5729 return NULL;
5730}
5731
5732/* If FH is a function code entry symbol, return the associated
5733 function descriptor symbol if it is defined. Return NULL otherwise. */
5734
5735static struct ppc_link_hash_entry *
5736defined_func_desc (struct ppc_link_hash_entry *fh)
5737{
5738 if (fh->oh != NULL
5739 && fh->oh->is_func_descriptor)
5740 {
5741 struct ppc_link_hash_entry *fdh = ppc_follow_link (fh->oh);
5742 if (fdh->elf.root.type == bfd_link_hash_defined
5743 || fdh->elf.root.type == bfd_link_hash_defweak)
5744 return fdh;
5745 }
5746 return NULL;
5747}
5748
74f0fb50
AM
5749/* Mark all our entry sym sections, both opd and code section. */
5750
5751static void
5752ppc64_elf_gc_keep (struct bfd_link_info *info)
5753{
5754 struct ppc_link_hash_table *htab = ppc_hash_table (info);
5755 struct bfd_sym_chain *sym;
5756
4dfe6ac6
NC
5757 if (htab == NULL)
5758 return;
5759
74f0fb50
AM
5760 for (sym = info->gc_sym_list; sym != NULL; sym = sym->next)
5761 {
b31867b6 5762 struct ppc_link_hash_entry *eh, *fh;
74f0fb50
AM
5763 asection *sec;
5764
5765 eh = (struct ppc_link_hash_entry *)
b31867b6 5766 elf_link_hash_lookup (&htab->elf, sym->name, FALSE, FALSE, TRUE);
74f0fb50
AM
5767 if (eh == NULL)
5768 continue;
5769 if (eh->elf.root.type != bfd_link_hash_defined
5770 && eh->elf.root.type != bfd_link_hash_defweak)
5771 continue;
5772
b31867b6
AM
5773 fh = defined_code_entry (eh);
5774 if (fh != NULL)
74f0fb50 5775 {
b31867b6 5776 sec = fh->elf.root.u.def.section;
74f0fb50
AM
5777 sec->flags |= SEC_KEEP;
5778 }
5779 else if (get_opd_info (eh->elf.root.u.def.section) != NULL
5780 && opd_entry_value (eh->elf.root.u.def.section,
5781 eh->elf.root.u.def.value,
aef36ac1 5782 &sec, NULL, FALSE) != (bfd_vma) -1)
74f0fb50
AM
5783 sec->flags |= SEC_KEEP;
5784
5785 sec = eh->elf.root.u.def.section;
5786 sec->flags |= SEC_KEEP;
5787 }
5788}
5789
64d03ab5
AM
5790/* Mark sections containing dynamically referenced symbols. When
5791 building shared libraries, we must assume that any visible symbol is
5792 referenced. */
5793
5794static bfd_boolean
5795ppc64_elf_gc_mark_dynamic_ref (struct elf_link_hash_entry *h, void *inf)
5796{
5797 struct bfd_link_info *info = (struct bfd_link_info *) inf;
5798 struct ppc_link_hash_entry *eh = (struct ppc_link_hash_entry *) h;
b31867b6 5799 struct ppc_link_hash_entry *fdh;
64d03ab5 5800
64d03ab5 5801 /* Dynamic linking info is on the func descriptor sym. */
b31867b6
AM
5802 fdh = defined_func_desc (eh);
5803 if (fdh != NULL)
5804 eh = fdh;
64d03ab5
AM
5805
5806 if ((eh->elf.root.type == bfd_link_hash_defined
5807 || eh->elf.root.type == bfd_link_hash_defweak)
5808 && (eh->elf.ref_dynamic
5809 || (!info->executable
5810 && eh->elf.def_regular
5811 && ELF_ST_VISIBILITY (eh->elf.other) != STV_INTERNAL
4c58e0d8
AM
5812 && ELF_ST_VISIBILITY (eh->elf.other) != STV_HIDDEN
5813 && (strchr (eh->elf.root.root.string, ELF_VER_CHR) != NULL
5814 || !bfd_hide_sym_by_version (info->version_info,
5815 eh->elf.root.root.string)))))
64d03ab5
AM
5816 {
5817 asection *code_sec;
b31867b6 5818 struct ppc_link_hash_entry *fh;
64d03ab5
AM
5819
5820 eh->elf.root.u.def.section->flags |= SEC_KEEP;
5821
5822 /* Function descriptor syms cause the associated
5823 function code sym section to be marked. */
b31867b6
AM
5824 fh = defined_code_entry (eh);
5825 if (fh != NULL)
5826 {
5827 code_sec = fh->elf.root.u.def.section;
5828 code_sec->flags |= SEC_KEEP;
5829 }
64d03ab5
AM
5830 else if (get_opd_info (eh->elf.root.u.def.section) != NULL
5831 && opd_entry_value (eh->elf.root.u.def.section,
5832 eh->elf.root.u.def.value,
aef36ac1 5833 &code_sec, NULL, FALSE) != (bfd_vma) -1)
64d03ab5
AM
5834 code_sec->flags |= SEC_KEEP;
5835 }
5836
5837 return TRUE;
5838}
5839
5bd4f169
AM
5840/* Return the section that should be marked against GC for a given
5841 relocation. */
5842
5843static asection *
4ce794b7 5844ppc64_elf_gc_mark_hook (asection *sec,
fb34365b 5845 struct bfd_link_info *info,
4ce794b7
AM
5846 Elf_Internal_Rela *rel,
5847 struct elf_link_hash_entry *h,
5848 Elf_Internal_Sym *sym)
5bd4f169 5849{
ccfa59ea
AM
5850 asection *rsec;
5851
ccfa59ea
AM
5852 /* Syms return NULL if we're marking .opd, so we avoid marking all
5853 function sections, as all functions are referenced in .opd. */
5854 rsec = NULL;
5855 if (get_opd_info (sec) != NULL)
5856 return rsec;
1e2f5b6e 5857
5bd4f169
AM
5858 if (h != NULL)
5859 {
04c9666a 5860 enum elf_ppc64_reloc_type r_type;
b31867b6 5861 struct ppc_link_hash_entry *eh, *fh, *fdh;
a33d1f77 5862
4ce794b7 5863 r_type = ELF64_R_TYPE (rel->r_info);
a33d1f77 5864 switch (r_type)
5bd4f169
AM
5865 {
5866 case R_PPC64_GNU_VTINHERIT:
5867 case R_PPC64_GNU_VTENTRY:
5868 break;
5869
5870 default:
5871 switch (h->root.type)
5872 {
5873 case bfd_link_hash_defined:
5874 case bfd_link_hash_defweak:
ccfa59ea 5875 eh = (struct ppc_link_hash_entry *) h;
b31867b6
AM
5876 fdh = defined_func_desc (eh);
5877 if (fdh != NULL)
5878 eh = fdh;
1e2f5b6e
AM
5879
5880 /* Function descriptor syms cause the associated
5881 function code sym section to be marked. */
b31867b6
AM
5882 fh = defined_code_entry (eh);
5883 if (fh != NULL)
ccfa59ea
AM
5884 {
5885 /* They also mark their opd section. */
74f0fb50 5886 eh->elf.root.u.def.section->gc_mark = 1;
ccfa59ea 5887
b31867b6 5888 rsec = fh->elf.root.u.def.section;
ccfa59ea 5889 }
8387904d
AM
5890 else if (get_opd_info (eh->elf.root.u.def.section) != NULL
5891 && opd_entry_value (eh->elf.root.u.def.section,
5892 eh->elf.root.u.def.value,
aef36ac1 5893 &rsec, NULL, FALSE) != (bfd_vma) -1)
74f0fb50 5894 eh->elf.root.u.def.section->gc_mark = 1;
ccfa59ea 5895 else
1e2f5b6e
AM
5896 rsec = h->root.u.def.section;
5897 break;
5bd4f169
AM
5898
5899 case bfd_link_hash_common:
1e2f5b6e
AM
5900 rsec = h->root.u.c.p->section;
5901 break;
5bd4f169
AM
5902
5903 default:
fb34365b 5904 return _bfd_elf_gc_mark_hook (sec, info, rel, h, sym);
5bd4f169
AM
5905 }
5906 }
5907 }
5908 else
5909 {
74f0fb50 5910 struct _opd_sec_data *opd;
1e2f5b6e
AM
5911
5912 rsec = bfd_section_from_elf_index (sec->owner, sym->st_shndx);
74f0fb50
AM
5913 opd = get_opd_info (rsec);
5914 if (opd != NULL && opd->func_sec != NULL)
ccfa59ea 5915 {
74f0fb50 5916 rsec->gc_mark = 1;
ccfa59ea 5917
74f0fb50 5918 rsec = opd->func_sec[(sym->st_value + rel->r_addend) / 8];
ccfa59ea 5919 }
5bd4f169
AM
5920 }
5921
1e2f5b6e 5922 return rsec;
5bd4f169
AM
5923}
5924
65f38f15
AM
5925/* Update the .got, .plt. and dynamic reloc reference counts for the
5926 section being removed. */
5bd4f169 5927
b34976b6 5928static bfd_boolean
4ce794b7
AM
5929ppc64_elf_gc_sweep_hook (bfd *abfd, struct bfd_link_info *info,
5930 asection *sec, const Elf_Internal_Rela *relocs)
5bd4f169 5931{
411e1bfb 5932 struct ppc_link_hash_table *htab;
5bd4f169
AM
5933 Elf_Internal_Shdr *symtab_hdr;
5934 struct elf_link_hash_entry **sym_hashes;
411e1bfb 5935 struct got_entry **local_got_ents;
5bd4f169 5936 const Elf_Internal_Rela *rel, *relend;
5bd4f169 5937
7dda2462
TG
5938 if (info->relocatable)
5939 return TRUE;
5940
680a3378
AM
5941 if ((sec->flags & SEC_ALLOC) == 0)
5942 return TRUE;
5943
ec338859
AM
5944 elf_section_data (sec)->local_dynrel = NULL;
5945
411e1bfb 5946 htab = ppc_hash_table (info);
4dfe6ac6
NC
5947 if (htab == NULL)
5948 return FALSE;
5949
0ffa91dd 5950 symtab_hdr = &elf_symtab_hdr (abfd);
5bd4f169 5951 sym_hashes = elf_sym_hashes (abfd);
411e1bfb 5952 local_got_ents = elf_local_got_ents (abfd);
5bd4f169
AM
5953
5954 relend = relocs + sec->reloc_count;
5955 for (rel = relocs; rel < relend; rel++)
a33d1f77
AM
5956 {
5957 unsigned long r_symndx;
04c9666a 5958 enum elf_ppc64_reloc_type r_type;
58ac9f71 5959 struct elf_link_hash_entry *h = NULL;
f961d9dd 5960 unsigned char tls_type = 0;
5bd4f169 5961
a33d1f77 5962 r_symndx = ELF64_R_SYM (rel->r_info);
4ce794b7 5963 r_type = ELF64_R_TYPE (rel->r_info);
58ac9f71
AM
5964 if (r_symndx >= symtab_hdr->sh_info)
5965 {
5966 struct ppc_link_hash_entry *eh;
6061a67d
AM
5967 struct elf_dyn_relocs **pp;
5968 struct elf_dyn_relocs *p;
58ac9f71
AM
5969
5970 h = sym_hashes[r_symndx - symtab_hdr->sh_info];
b31867b6 5971 h = elf_follow_link (h);
58ac9f71
AM
5972 eh = (struct ppc_link_hash_entry *) h;
5973
5974 for (pp = &eh->dyn_relocs; (p = *pp) != NULL; pp = &p->next)
5975 if (p->sec == sec)
5976 {
5977 /* Everything must go for SEC. */
5978 *pp = p->next;
5979 break;
5980 }
5981 }
5982
e054468f
AM
5983 if (is_branch_reloc (r_type))
5984 {
5985 struct plt_entry **ifunc = NULL;
5986 if (h != NULL)
5987 {
5988 if (h->type == STT_GNU_IFUNC)
5989 ifunc = &h->plt.plist;
5990 }
5991 else if (local_got_ents != NULL)
5992 {
5993 struct plt_entry **local_plt = (struct plt_entry **)
5994 (local_got_ents + symtab_hdr->sh_info);
f961d9dd 5995 unsigned char *local_got_tls_masks = (unsigned char *)
e054468f
AM
5996 (local_plt + symtab_hdr->sh_info);
5997 if ((local_got_tls_masks[r_symndx] & PLT_IFUNC) != 0)
5998 ifunc = local_plt + r_symndx;
5999 }
6000 if (ifunc != NULL)
6001 {
6002 struct plt_entry *ent;
6003
6004 for (ent = *ifunc; ent != NULL; ent = ent->next)
6005 if (ent->addend == rel->r_addend)
6006 break;
6007 if (ent == NULL)
6008 abort ();
6009 if (ent->plt.refcount > 0)
6010 ent->plt.refcount -= 1;
6011 continue;
6012 }
6013 }
6014
a33d1f77
AM
6015 switch (r_type)
6016 {
411e1bfb
AM
6017 case R_PPC64_GOT_TLSLD16:
6018 case R_PPC64_GOT_TLSLD16_LO:
6019 case R_PPC64_GOT_TLSLD16_HI:
6020 case R_PPC64_GOT_TLSLD16_HA:
951fd09b 6021 tls_type = TLS_TLS | TLS_LD;
411e1bfb
AM
6022 goto dogot;
6023
6024 case R_PPC64_GOT_TLSGD16:
6025 case R_PPC64_GOT_TLSGD16_LO:
6026 case R_PPC64_GOT_TLSGD16_HI:
6027 case R_PPC64_GOT_TLSGD16_HA:
951fd09b 6028 tls_type = TLS_TLS | TLS_GD;
411e1bfb
AM
6029 goto dogot;
6030
6031 case R_PPC64_GOT_TPREL16_DS:
6032 case R_PPC64_GOT_TPREL16_LO_DS:
6033 case R_PPC64_GOT_TPREL16_HI:
6034 case R_PPC64_GOT_TPREL16_HA:
6035 tls_type = TLS_TLS | TLS_TPREL;
6036 goto dogot;
6037
6038 case R_PPC64_GOT_DTPREL16_DS:
6039 case R_PPC64_GOT_DTPREL16_LO_DS:
6040 case R_PPC64_GOT_DTPREL16_HI:
6041 case R_PPC64_GOT_DTPREL16_HA:
6042 tls_type = TLS_TLS | TLS_DTPREL;
6043 goto dogot;
6044
a33d1f77
AM
6045 case R_PPC64_GOT16:
6046 case R_PPC64_GOT16_DS:
6047 case R_PPC64_GOT16_HA:
6048 case R_PPC64_GOT16_HI:
6049 case R_PPC64_GOT16_LO:
6050 case R_PPC64_GOT16_LO_DS:
411e1bfb
AM
6051 dogot:
6052 {
6053 struct got_entry *ent;
6054
58ac9f71
AM
6055 if (h != NULL)
6056 ent = h->got.glist;
411e1bfb
AM
6057 else
6058 ent = local_got_ents[r_symndx];
6059
6060 for (; ent != NULL; ent = ent->next)
6061 if (ent->addend == rel->r_addend
e717da7e 6062 && ent->owner == abfd
411e1bfb
AM
6063 && ent->tls_type == tls_type)
6064 break;
6065 if (ent == NULL)
6066 abort ();
6067 if (ent->got.refcount > 0)
6068 ent->got.refcount -= 1;
6069 }
a33d1f77 6070 break;
65f38f15 6071
a33d1f77
AM
6072 case R_PPC64_PLT16_HA:
6073 case R_PPC64_PLT16_HI:
6074 case R_PPC64_PLT16_LO:
6075 case R_PPC64_PLT32:
6076 case R_PPC64_PLT64:
721956f4
AM
6077 case R_PPC64_REL14:
6078 case R_PPC64_REL14_BRNTAKEN:
6079 case R_PPC64_REL14_BRTAKEN:
5d1634d7 6080 case R_PPC64_REL24:
58ac9f71 6081 if (h != NULL)
5d1634d7 6082 {
411e1bfb
AM
6083 struct plt_entry *ent;
6084
411e1bfb
AM
6085 for (ent = h->plt.plist; ent != NULL; ent = ent->next)
6086 if (ent->addend == rel->r_addend)
6087 break;
7c6c1722 6088 if (ent != NULL && ent->plt.refcount > 0)
411e1bfb 6089 ent->plt.refcount -= 1;
5d1634d7 6090 }
e86ce104 6091 break;
5d1634d7 6092
a33d1f77
AM
6093 default:
6094 break;
6095 }
6096 }
b34976b6 6097 return TRUE;
5bd4f169
AM
6098}
6099
deb0e272
AM
6100/* The maximum size of .sfpr. */
6101#define SFPR_MAX (218*4)
6102
6103struct sfpr_def_parms
6104{
699733f6
AM
6105 const char name[12];
6106 unsigned char lo, hi;
deb0e272
AM
6107 bfd_byte * (*write_ent) (bfd *, bfd_byte *, int);
6108 bfd_byte * (*write_tail) (bfd *, bfd_byte *, int);
6109};
6110
6111/* Auto-generate _save*, _rest* functions in .sfpr. */
6112
4dfe6ac6 6113static bfd_boolean
deb0e272
AM
6114sfpr_define (struct bfd_link_info *info, const struct sfpr_def_parms *parm)
6115{
6116 struct ppc_link_hash_table *htab = ppc_hash_table (info);
6117 unsigned int i;
6118 size_t len = strlen (parm->name);
6119 bfd_boolean writing = FALSE;
699733f6 6120 char sym[16];
deb0e272 6121
4dfe6ac6
NC
6122 if (htab == NULL)
6123 return FALSE;
6124
deb0e272
AM
6125 memcpy (sym, parm->name, len);
6126 sym[len + 2] = 0;
6127
6128 for (i = parm->lo; i <= parm->hi; i++)
6129 {
6130 struct elf_link_hash_entry *h;
6131
6132 sym[len + 0] = i / 10 + '0';
6133 sym[len + 1] = i % 10 + '0';
6134 h = elf_link_hash_lookup (&htab->elf, sym, FALSE, FALSE, TRUE);
6135 if (h != NULL
f5385ebf 6136 && !h->def_regular)
deb0e272
AM
6137 {
6138 h->root.type = bfd_link_hash_defined;
6139 h->root.u.def.section = htab->sfpr;
6140 h->root.u.def.value = htab->sfpr->size;
6141 h->type = STT_FUNC;
f5385ebf 6142 h->def_regular = 1;
deb0e272
AM
6143 _bfd_elf_link_hash_hide_symbol (info, h, TRUE);
6144 writing = TRUE;
6145 if (htab->sfpr->contents == NULL)
6146 {
6147 htab->sfpr->contents = bfd_alloc (htab->elf.dynobj, SFPR_MAX);
6148 if (htab->sfpr->contents == NULL)
6149 return FALSE;
6150 }
6151 }
6152 if (writing)
6153 {
6154 bfd_byte *p = htab->sfpr->contents + htab->sfpr->size;
6155 if (i != parm->hi)
6156 p = (*parm->write_ent) (htab->elf.dynobj, p, i);
6157 else
6158 p = (*parm->write_tail) (htab->elf.dynobj, p, i);
6159 htab->sfpr->size = p - htab->sfpr->contents;
6160 }
6161 }
6162
6163 return TRUE;
6164}
6165
6166static bfd_byte *
6167savegpr0 (bfd *abfd, bfd_byte *p, int r)
6168{
6169 bfd_put_32 (abfd, STD_R0_0R1 + (r << 21) + (1 << 16) - (32 - r) * 8, p);
6170 return p + 4;
6171}
6172
6173static bfd_byte *
6174savegpr0_tail (bfd *abfd, bfd_byte *p, int r)
6175{
6176 p = savegpr0 (abfd, p, r);
6177 bfd_put_32 (abfd, STD_R0_0R1 + 16, p);
6178 p = p + 4;
6179 bfd_put_32 (abfd, BLR, p);
6180 return p + 4;
6181}
6182
6183static bfd_byte *
6184restgpr0 (bfd *abfd, bfd_byte *p, int r)
6185{
6186 bfd_put_32 (abfd, LD_R0_0R1 + (r << 21) + (1 << 16) - (32 - r) * 8, p);
6187 return p + 4;
6188}
6189
6190static bfd_byte *
6191restgpr0_tail (bfd *abfd, bfd_byte *p, int r)
6192{
6193 bfd_put_32 (abfd, LD_R0_0R1 + 16, p);
6194 p = p + 4;
6195 p = restgpr0 (abfd, p, r);
6196 bfd_put_32 (abfd, MTLR_R0, p);
6197 p = p + 4;
6198 if (r == 29)
6199 {
6200 p = restgpr0 (abfd, p, 30);
6201 p = restgpr0 (abfd, p, 31);
6202 }
6203 bfd_put_32 (abfd, BLR, p);
6204 return p + 4;
6205}
6206
6207static bfd_byte *
6208savegpr1 (bfd *abfd, bfd_byte *p, int r)
6209{
6210 bfd_put_32 (abfd, STD_R0_0R12 + (r << 21) + (1 << 16) - (32 - r) * 8, p);
6211 return p + 4;
6212}
6213
6214static bfd_byte *
6215savegpr1_tail (bfd *abfd, bfd_byte *p, int r)
6216{
6217 p = savegpr1 (abfd, p, r);
6218 bfd_put_32 (abfd, BLR, p);
6219 return p + 4;
6220}
6221
6222static bfd_byte *
6223restgpr1 (bfd *abfd, bfd_byte *p, int r)
6224{
6225 bfd_put_32 (abfd, LD_R0_0R12 + (r << 21) + (1 << 16) - (32 - r) * 8, p);
6226 return p + 4;
6227}
6228
6229static bfd_byte *
6230restgpr1_tail (bfd *abfd, bfd_byte *p, int r)
6231{
6232 p = restgpr1 (abfd, p, r);
6233 bfd_put_32 (abfd, BLR, p);
6234 return p + 4;
6235}
6236
6237static bfd_byte *
6238savefpr (bfd *abfd, bfd_byte *p, int r)
6239{
6240 bfd_put_32 (abfd, STFD_FR0_0R1 + (r << 21) + (1 << 16) - (32 - r) * 8, p);
6241 return p + 4;
6242}
6243
6244static bfd_byte *
6245savefpr0_tail (bfd *abfd, bfd_byte *p, int r)
6246{
6247 p = savefpr (abfd, p, r);
6248 bfd_put_32 (abfd, STD_R0_0R1 + 16, p);
6249 p = p + 4;
6250 bfd_put_32 (abfd, BLR, p);
6251 return p + 4;
6252}
6253
6254static bfd_byte *
6255restfpr (bfd *abfd, bfd_byte *p, int r)
6256{
6257 bfd_put_32 (abfd, LFD_FR0_0R1 + (r << 21) + (1 << 16) - (32 - r) * 8, p);
6258 return p + 4;
6259}
6260
6261static bfd_byte *
6262restfpr0_tail (bfd *abfd, bfd_byte *p, int r)
6263{
6264 bfd_put_32 (abfd, LD_R0_0R1 + 16, p);
6265 p = p + 4;
6266 p = restfpr (abfd, p, r);
6267 bfd_put_32 (abfd, MTLR_R0, p);
6268 p = p + 4;
6269 if (r == 29)
6270 {
6271 p = restfpr (abfd, p, 30);
6272 p = restfpr (abfd, p, 31);
6273 }
6274 bfd_put_32 (abfd, BLR, p);
6275 return p + 4;
6276}
6277
6278static bfd_byte *
6279savefpr1_tail (bfd *abfd, bfd_byte *p, int r)
6280{
6281 p = savefpr (abfd, p, r);
6282 bfd_put_32 (abfd, BLR, p);
6283 return p + 4;
6284}
6285
6286static bfd_byte *
6287restfpr1_tail (bfd *abfd, bfd_byte *p, int r)
6288{
6289 p = restfpr (abfd, p, r);
6290 bfd_put_32 (abfd, BLR, p);
6291 return p + 4;
6292}
6293
6294static bfd_byte *
6295savevr (bfd *abfd, bfd_byte *p, int r)
6296{
6297 bfd_put_32 (abfd, LI_R12_0 + (1 << 16) - (32 - r) * 16, p);
6298 p = p + 4;
6299 bfd_put_32 (abfd, STVX_VR0_R12_R0 + (r << 21), p);
6300 return p + 4;
6301}
6302
6303static bfd_byte *
6304savevr_tail (bfd *abfd, bfd_byte *p, int r)
6305{
6306 p = savevr (abfd, p, r);
6307 bfd_put_32 (abfd, BLR, p);
6308 return p + 4;
6309}
6310
6311static bfd_byte *
6312restvr (bfd *abfd, bfd_byte *p, int r)
6313{
6314 bfd_put_32 (abfd, LI_R12_0 + (1 << 16) - (32 - r) * 16, p);
6315 p = p + 4;
6316 bfd_put_32 (abfd, LVX_VR0_R12_R0 + (r << 21), p);
6317 return p + 4;
6318}
6319
6320static bfd_byte *
6321restvr_tail (bfd *abfd, bfd_byte *p, int r)
6322{
6323 p = restvr (abfd, p, r);
6324 bfd_put_32 (abfd, BLR, p);
6325 return p + 4;
6326}
6327
e86ce104
AM
6328/* Called via elf_link_hash_traverse to transfer dynamic linking
6329 information on function code symbol entries to their corresponding
6330 function descriptor symbol entries. */
deb0e272 6331
b34976b6 6332static bfd_boolean
4ce794b7 6333func_desc_adjust (struct elf_link_hash_entry *h, void *inf)
5bd4f169 6334{
e86ce104 6335 struct bfd_link_info *info;
65f38f15 6336 struct ppc_link_hash_table *htab;
411e1bfb 6337 struct plt_entry *ent;
50bc7936
AM
6338 struct ppc_link_hash_entry *fh;
6339 struct ppc_link_hash_entry *fdh;
6340 bfd_boolean force_local;
5bd4f169 6341
50bc7936
AM
6342 fh = (struct ppc_link_hash_entry *) h;
6343 if (fh->elf.root.type == bfd_link_hash_indirect)
b34976b6 6344 return TRUE;
e86ce104 6345
4ce794b7 6346 info = inf;
65f38f15 6347 htab = ppc_hash_table (info);
4dfe6ac6
NC
6348 if (htab == NULL)
6349 return FALSE;
5bd4f169 6350
c09bdfe5
AM
6351 /* Resolve undefined references to dot-symbols as the value
6352 in the function descriptor, if we have one in a regular object.
6353 This is to satisfy cases like ".quad .foo". Calls to functions
6354 in dynamic objects are handled elsewhere. */
6355 if (fh->elf.root.type == bfd_link_hash_undefweak
6356 && fh->was_undefined
b31867b6
AM
6357 && (fdh = defined_func_desc (fh)) != NULL
6358 && get_opd_info (fdh->elf.root.u.def.section) != NULL
6359 && opd_entry_value (fdh->elf.root.u.def.section,
6360 fdh->elf.root.u.def.value,
c09bdfe5 6361 &fh->elf.root.u.def.section,
aef36ac1 6362 &fh->elf.root.u.def.value, FALSE) != (bfd_vma) -1)
c09bdfe5 6363 {
b31867b6 6364 fh->elf.root.type = fdh->elf.root.type;
f5385ebf 6365 fh->elf.forced_local = 1;
b31867b6
AM
6366 fh->elf.def_regular = fdh->elf.def_regular;
6367 fh->elf.def_dynamic = fdh->elf.def_dynamic;
c09bdfe5
AM
6368 }
6369
e86ce104
AM
6370 /* If this is a function code symbol, transfer dynamic linking
6371 information to the function descriptor symbol. */
50bc7936 6372 if (!fh->is_func)
b34976b6 6373 return TRUE;
e86ce104 6374
50bc7936 6375 for (ent = fh->elf.plt.plist; ent != NULL; ent = ent->next)
411e1bfb
AM
6376 if (ent->plt.refcount > 0)
6377 break;
50bc7936
AM
6378 if (ent == NULL
6379 || fh->elf.root.root.string[0] != '.'
6380 || fh->elf.root.root.string[1] == '\0')
6381 return TRUE;
5bd4f169 6382
50bc7936
AM
6383 /* Find the corresponding function descriptor symbol. Create it
6384 as undefined if necessary. */
5bd4f169 6385
b31867b6 6386 fdh = lookup_fdh (fh, htab);
50bc7936 6387 if (fdh == NULL
df131623 6388 && !info->executable
50bc7936
AM
6389 && (fh->elf.root.type == bfd_link_hash_undefined
6390 || fh->elf.root.type == bfd_link_hash_undefweak))
6391 {
908b32fc 6392 fdh = make_fdh (info, fh);
bb700d78
AM
6393 if (fdh == NULL)
6394 return FALSE;
50bc7936 6395 }
648cca2c 6396
908b32fc 6397 /* Fake function descriptors are made undefweak. If the function
433817dd
AM
6398 code symbol is strong undefined, make the fake sym the same.
6399 If the function code symbol is defined, then force the fake
6400 descriptor local; We can't support overriding of symbols in a
6401 shared library on a fake descriptor. */
908b32fc
AM
6402
6403 if (fdh != NULL
6404 && fdh->fake
433817dd 6405 && fdh->elf.root.type == bfd_link_hash_undefweak)
908b32fc 6406 {
433817dd
AM
6407 if (fh->elf.root.type == bfd_link_hash_undefined)
6408 {
6409 fdh->elf.root.type = bfd_link_hash_undefined;
6410 bfd_link_add_undef (&htab->elf.root, &fdh->elf.root);
6411 }
6412 else if (fh->elf.root.type == bfd_link_hash_defined
6413 || fh->elf.root.type == bfd_link_hash_defweak)
6414 {
6415 _bfd_elf_link_hash_hide_symbol (info, &fdh->elf, TRUE);
6416 }
908b32fc
AM
6417 }
6418
50bc7936 6419 if (fdh != NULL
f5385ebf 6420 && !fdh->elf.forced_local
df131623 6421 && (!info->executable
f5385ebf
AM
6422 || fdh->elf.def_dynamic
6423 || fdh->elf.ref_dynamic
50bc7936
AM
6424 || (fdh->elf.root.type == bfd_link_hash_undefweak
6425 && ELF_ST_VISIBILITY (fdh->elf.other) == STV_DEFAULT)))
6426 {
6427 if (fdh->elf.dynindx == -1)
c152c796 6428 if (! bfd_elf_link_record_dynamic_symbol (info, &fdh->elf))
50bc7936 6429 return FALSE;
f5385ebf
AM
6430 fdh->elf.ref_regular |= fh->elf.ref_regular;
6431 fdh->elf.ref_dynamic |= fh->elf.ref_dynamic;
6432 fdh->elf.ref_regular_nonweak |= fh->elf.ref_regular_nonweak;
6433 fdh->elf.non_got_ref |= fh->elf.non_got_ref;
50bc7936 6434 if (ELF_ST_VISIBILITY (fh->elf.other) == STV_DEFAULT)
e86ce104 6435 {
40d16e0b 6436 move_plt_plist (fh, fdh);
f5385ebf 6437 fdh->elf.needs_plt = 1;
e86ce104 6438 }
50bc7936 6439 fdh->is_func_descriptor = 1;
34814b9f
AM
6440 fdh->oh = fh;
6441 fh->oh = fdh;
e86ce104
AM
6442 }
6443
50bc7936
AM
6444 /* Now that the info is on the function descriptor, clear the
6445 function code sym info. Any function code syms for which we
6446 don't have a definition in a regular file, we force local.
6447 This prevents a shared library from exporting syms that have
6448 been imported from another library. Function code syms that
6449 are really in the library we must leave global to prevent the
6450 linker dragging in a definition from a static library. */
93f3fa99
AM
6451 force_local = (!fh->elf.def_regular
6452 || fdh == NULL
6453 || !fdh->elf.def_regular
6454 || fdh->elf.forced_local);
50bc7936
AM
6455 _bfd_elf_link_hash_hide_symbol (info, &fh->elf, force_local);
6456
b34976b6 6457 return TRUE;
e86ce104 6458}
40b8271b 6459
e86ce104 6460/* Called near the start of bfd_elf_size_dynamic_sections. We use
82bd7b59
AM
6461 this hook to a) provide some gcc support functions, and b) transfer
6462 dynamic linking information gathered so far on function code symbol
6463 entries, to their corresponding function descriptor symbol entries. */
deb0e272 6464
b34976b6 6465static bfd_boolean
4ce794b7
AM
6466ppc64_elf_func_desc_adjust (bfd *obfd ATTRIBUTE_UNUSED,
6467 struct bfd_link_info *info)
e86ce104
AM
6468{
6469 struct ppc_link_hash_table *htab;
82bd7b59 6470 unsigned int i;
27fc25a1 6471 static const struct sfpr_def_parms funcs[] =
deb0e272
AM
6472 {
6473 { "_savegpr0_", 14, 31, savegpr0, savegpr0_tail },
6474 { "_restgpr0_", 14, 29, restgpr0, restgpr0_tail },
6475 { "_restgpr0_", 30, 31, restgpr0, restgpr0_tail },
6476 { "_savegpr1_", 14, 31, savegpr1, savegpr1_tail },
6477 { "_restgpr1_", 14, 31, restgpr1, restgpr1_tail },
6478 { "_savefpr_", 14, 31, savefpr, savefpr0_tail },
6479 { "_restfpr_", 14, 29, restfpr, restfpr0_tail },
6480 { "_restfpr_", 30, 31, restfpr, restfpr0_tail },
6481 { "._savef", 14, 31, savefpr, savefpr1_tail },
6482 { "._restf", 14, 31, restfpr, restfpr1_tail },
6483 { "_savevr_", 20, 31, savevr, savevr_tail },
6484 { "_restvr_", 20, 31, restvr, restvr_tail }
6485 };
e86ce104
AM
6486
6487 htab = ppc_hash_table (info);
4dfe6ac6
NC
6488 if (htab == NULL)
6489 return FALSE;
6490
82bd7b59
AM
6491 if (htab->sfpr == NULL)
6492 /* We don't have any relocs. */
b34976b6 6493 return TRUE;
82bd7b59 6494
deb0e272
AM
6495 /* Provide any missing _save* and _rest* functions. */
6496 htab->sfpr->size = 0;
27fc25a1
AM
6497 if (!info->relocatable)
6498 for (i = 0; i < sizeof (funcs) / sizeof (funcs[0]); i++)
6499 if (!sfpr_define (info, &funcs[i]))
6500 return FALSE;
82bd7b59 6501
4ce794b7 6502 elf_link_hash_traverse (&htab->elf, func_desc_adjust, info);
805fc799 6503
eea6121a 6504 if (htab->sfpr->size == 0)
8423293d 6505 htab->sfpr->flags |= SEC_EXCLUDE;
82bd7b59 6506
b34976b6 6507 return TRUE;
e86ce104
AM
6508}
6509
6510/* Adjust a symbol defined by a dynamic object and referenced by a
6511 regular object. The current definition is in some section of the
6512 dynamic object, but we're not including those sections. We have to
6513 change the definition to something the rest of the link can
6514 understand. */
6515
b34976b6 6516static bfd_boolean
4ce794b7
AM
6517ppc64_elf_adjust_dynamic_symbol (struct bfd_link_info *info,
6518 struct elf_link_hash_entry *h)
e86ce104
AM
6519{
6520 struct ppc_link_hash_table *htab;
e86ce104 6521 asection *s;
e86ce104
AM
6522
6523 htab = ppc_hash_table (info);
4dfe6ac6
NC
6524 if (htab == NULL)
6525 return FALSE;
e86ce104
AM
6526
6527 /* Deal with function syms. */
6528 if (h->type == STT_FUNC
e054468f 6529 || h->type == STT_GNU_IFUNC
f5385ebf 6530 || h->needs_plt)
e86ce104
AM
6531 {
6532 /* Clear procedure linkage table information for any symbol that
6533 won't need a .plt entry. */
411e1bfb
AM
6534 struct plt_entry *ent;
6535 for (ent = h->plt.plist; ent != NULL; ent = ent->next)
6536 if (ent->plt.refcount > 0)
6537 break;
8387904d 6538 if (ent == NULL
e054468f
AM
6539 || (h->type != STT_GNU_IFUNC
6540 && (SYMBOL_CALLS_LOCAL (info, h)
6541 || (ELF_ST_VISIBILITY (h->other) != STV_DEFAULT
6542 && h->root.type == bfd_link_hash_undefweak))))
40b8271b 6543 {
411e1bfb 6544 h->plt.plist = NULL;
f5385ebf 6545 h->needs_plt = 0;
40b8271b 6546 }
5bd4f169 6547 }
bbd7ec4a 6548 else
411e1bfb 6549 h->plt.plist = NULL;
5bd4f169
AM
6550
6551 /* If this is a weak symbol, and there is a real definition, the
6552 processor independent code will have arranged for us to see the
6553 real definition first, and we can just use the same value. */
f6e332e6 6554 if (h->u.weakdef != NULL)
5bd4f169 6555 {
f6e332e6
AM
6556 BFD_ASSERT (h->u.weakdef->root.type == bfd_link_hash_defined
6557 || h->u.weakdef->root.type == bfd_link_hash_defweak);
6558 h->root.u.def.section = h->u.weakdef->root.u.def.section;
6559 h->root.u.def.value = h->u.weakdef->root.u.def.value;
a23b6845 6560 if (ELIMINATE_COPY_RELOCS)
f6e332e6 6561 h->non_got_ref = h->u.weakdef->non_got_ref;
b34976b6 6562 return TRUE;
5bd4f169
AM
6563 }
6564
5bd4f169
AM
6565 /* If we are creating a shared library, we must presume that the
6566 only references to the symbol are via the global offset table.
6567 For such cases we need not do anything here; the relocations will
6568 be handled correctly by relocate_section. */
6569 if (info->shared)
b34976b6 6570 return TRUE;
5bd4f169 6571
65f38f15
AM
6572 /* If there are no references to this symbol that do not use the
6573 GOT, we don't need to generate a copy reloc. */
f5385ebf 6574 if (!h->non_got_ref)
b34976b6 6575 return TRUE;
65f38f15 6576
b186458a
JJ
6577 /* Don't generate a copy reloc for symbols defined in the executable. */
6578 if (!h->def_dynamic || !h->ref_regular || h->def_regular)
6579 return TRUE;
6580
f4656909 6581 if (ELIMINATE_COPY_RELOCS)
65f38f15 6582 {
f4656909 6583 struct ppc_link_hash_entry * eh;
6061a67d 6584 struct elf_dyn_relocs *p;
65f38f15 6585
f4656909
AM
6586 eh = (struct ppc_link_hash_entry *) h;
6587 for (p = eh->dyn_relocs; p != NULL; p = p->next)
6588 {
6589 s = p->sec->output_section;
6590 if (s != NULL && (s->flags & SEC_READONLY) != 0)
6591 break;
6592 }
6593
6594 /* If we didn't find any dynamic relocs in read-only sections, then
6595 we'll be keeping the dynamic relocs and avoiding the copy reloc. */
6596 if (p == NULL)
6597 {
f5385ebf 6598 h->non_got_ref = 0;
f4656909
AM
6599 return TRUE;
6600 }
65f38f15
AM
6601 }
6602
5d35169e 6603 if (h->plt.plist != NULL)
97b639ba
AM
6604 {
6605 /* We should never get here, but unfortunately there are versions
6606 of gcc out there that improperly (for this ABI) put initialized
6607 function pointers, vtable refs and suchlike in read-only
6608 sections. Allow them to proceed, but warn that this might
6609 break at runtime. */
25f53a85 6610 info->callbacks->einfo
8de848d8 6611 (_("%P: copy reloc against `%s' requires lazy plt linking; "
25f53a85 6612 "avoid setting LD_BIND_NOW=1 or upgrade gcc\n"),
97b639ba
AM
6613 h->root.root.string);
6614 }
5d35169e
AM
6615
6616 /* This is a reference to a symbol defined by a dynamic object which
6617 is not a function. */
6618
5bd4f169
AM
6619 /* We must allocate the symbol in our .dynbss section, which will
6620 become part of the .bss section of the executable. There will be
6621 an entry for this symbol in the .dynsym section. The dynamic
6622 object will contain position independent code, so all references
6623 from the dynamic object to this symbol will go through the global
6624 offset table. The dynamic linker will use the .dynsym entry to
6625 determine the address it must put in the global offset table, so
6626 both the dynamic object and the regular object will refer to the
6627 same memory location for the variable. */
5bd4f169 6628
04c9666a
AM
6629 /* We must generate a R_PPC64_COPY reloc to tell the dynamic linker
6630 to copy the initial value out of the dynamic object and into the
5bd4f169
AM
6631 runtime process image. We need to remember the offset into the
6632 .rela.bss section we are going to use. */
1d7e9d18 6633 if ((h->root.u.def.section->flags & SEC_ALLOC) != 0 && h->size != 0)
5bd4f169 6634 {
eea6121a 6635 htab->relbss->size += sizeof (Elf64_External_Rela);
f5385ebf 6636 h->needs_copy = 1;
5bd4f169
AM
6637 }
6638
4ce794b7 6639 s = htab->dynbss;
5bd4f169 6640
027297b7 6641 return _bfd_elf_adjust_dynamic_copy (h, s);
5bd4f169
AM
6642}
6643
e86ce104
AM
6644/* If given a function descriptor symbol, hide both the function code
6645 sym and the descriptor. */
6646static void
4ce794b7
AM
6647ppc64_elf_hide_symbol (struct bfd_link_info *info,
6648 struct elf_link_hash_entry *h,
6649 bfd_boolean force_local)
e86ce104 6650{
34814b9f 6651 struct ppc_link_hash_entry *eh;
e86ce104
AM
6652 _bfd_elf_link_hash_hide_symbol (info, h, force_local);
6653
34814b9f
AM
6654 eh = (struct ppc_link_hash_entry *) h;
6655 if (eh->is_func_descriptor)
e86ce104 6656 {
34814b9f 6657 struct ppc_link_hash_entry *fh = eh->oh;
e86ce104 6658
721956f4 6659 if (fh == NULL)
d1329ca3
AM
6660 {
6661 const char *p, *q;
6662 struct ppc_link_hash_table *htab;
6663 char save;
6664
6665 /* We aren't supposed to use alloca in BFD because on
6666 systems which do not have alloca the version in libiberty
6667 calls xmalloc, which might cause the program to crash
6668 when it runs out of memory. This function doesn't have a
6669 return status, so there's no way to gracefully return an
6670 error. So cheat. We know that string[-1] can be safely
34814b9f
AM
6671 accessed; It's either a string in an ELF string table,
6672 or allocated in an objalloc structure. */
d1329ca3 6673
34814b9f 6674 p = eh->elf.root.root.string - 1;
d1329ca3
AM
6675 save = *p;
6676 *(char *) p = '.';
6677 htab = ppc_hash_table (info);
4dfe6ac6
NC
6678 if (htab == NULL)
6679 return;
6680
34814b9f
AM
6681 fh = (struct ppc_link_hash_entry *)
6682 elf_link_hash_lookup (&htab->elf, p, FALSE, FALSE, FALSE);
d1329ca3
AM
6683 *(char *) p = save;
6684
6685 /* Unfortunately, if it so happens that the string we were
6686 looking for was allocated immediately before this string,
6687 then we overwrote the string terminator. That's the only
6688 reason the lookup should fail. */
6689 if (fh == NULL)
6690 {
34814b9f
AM
6691 q = eh->elf.root.root.string + strlen (eh->elf.root.root.string);
6692 while (q >= eh->elf.root.root.string && *q == *p)
d1329ca3 6693 --q, --p;
34814b9f
AM
6694 if (q < eh->elf.root.root.string && *p == '.')
6695 fh = (struct ppc_link_hash_entry *)
6696 elf_link_hash_lookup (&htab->elf, p, FALSE, FALSE, FALSE);
d1329ca3
AM
6697 }
6698 if (fh != NULL)
6699 {
34814b9f
AM
6700 eh->oh = fh;
6701 fh->oh = eh;
d1329ca3
AM
6702 }
6703 }
e86ce104 6704 if (fh != NULL)
34814b9f 6705 _bfd_elf_link_hash_hide_symbol (info, &fh->elf, force_local);
e86ce104
AM
6706 }
6707}
6708
411e1bfb 6709static bfd_boolean
8843416a
AM
6710get_sym_h (struct elf_link_hash_entry **hp,
6711 Elf_Internal_Sym **symp,
6712 asection **symsecp,
f961d9dd 6713 unsigned char **tls_maskp,
8843416a
AM
6714 Elf_Internal_Sym **locsymsp,
6715 unsigned long r_symndx,
6716 bfd *ibfd)
411e1bfb 6717{
0ffa91dd 6718 Elf_Internal_Shdr *symtab_hdr = &elf_symtab_hdr (ibfd);
411e1bfb
AM
6719
6720 if (r_symndx >= symtab_hdr->sh_info)
6721 {
6722 struct elf_link_hash_entry **sym_hashes = elf_sym_hashes (ibfd);
6723 struct elf_link_hash_entry *h;
6724
6725 h = sym_hashes[r_symndx - symtab_hdr->sh_info];
b31867b6 6726 h = elf_follow_link (h);
411e1bfb
AM
6727
6728 if (hp != NULL)
6729 *hp = h;
6730
6731 if (symp != NULL)
6732 *symp = NULL;
6733
6734 if (symsecp != NULL)
6735 {
6736 asection *symsec = NULL;
6737 if (h->root.type == bfd_link_hash_defined
6738 || h->root.type == bfd_link_hash_defweak)
6739 symsec = h->root.u.def.section;
6740 *symsecp = symsec;
6741 }
6742
e7b938ca 6743 if (tls_maskp != NULL)
411e1bfb
AM
6744 {
6745 struct ppc_link_hash_entry *eh;
6746
6747 eh = (struct ppc_link_hash_entry *) h;
e7b938ca 6748 *tls_maskp = &eh->tls_mask;
411e1bfb
AM
6749 }
6750 }
6751 else
6752 {
6753 Elf_Internal_Sym *sym;
6754 Elf_Internal_Sym *locsyms = *locsymsp;
6755
6756 if (locsyms == NULL)
6757 {
6758 locsyms = (Elf_Internal_Sym *) symtab_hdr->contents;
6759 if (locsyms == NULL)
6760 locsyms = bfd_elf_get_elf_syms (ibfd, symtab_hdr,
6761 symtab_hdr->sh_info,
6762 0, NULL, NULL, NULL);
6763 if (locsyms == NULL)
6764 return FALSE;
6765 *locsymsp = locsyms;
6766 }
6767 sym = locsyms + r_symndx;
6768
6769 if (hp != NULL)
6770 *hp = NULL;
6771
6772 if (symp != NULL)
6773 *symp = sym;
6774
6775 if (symsecp != NULL)
cb33740c 6776 *symsecp = bfd_section_from_elf_index (ibfd, sym->st_shndx);
411e1bfb 6777
e7b938ca 6778 if (tls_maskp != NULL)
411e1bfb
AM
6779 {
6780 struct got_entry **lgot_ents;
f961d9dd 6781 unsigned char *tls_mask;
411e1bfb 6782
e7b938ca 6783 tls_mask = NULL;
411e1bfb
AM
6784 lgot_ents = elf_local_got_ents (ibfd);
6785 if (lgot_ents != NULL)
6786 {
e054468f
AM
6787 struct plt_entry **local_plt = (struct plt_entry **)
6788 (lgot_ents + symtab_hdr->sh_info);
f961d9dd 6789 unsigned char *lgot_masks = (unsigned char *)
e054468f 6790 (local_plt + symtab_hdr->sh_info);
e7b938ca 6791 tls_mask = &lgot_masks[r_symndx];
411e1bfb 6792 }
e7b938ca 6793 *tls_maskp = tls_mask;
411e1bfb
AM
6794 }
6795 }
6796 return TRUE;
6797}
6798
e7b938ca 6799/* Returns TLS_MASKP for the given REL symbol. Function return is 0 on
951fd09b 6800 error, 2 on a toc GD type suitable for optimization, 3 on a toc LD
ad8e1ba5 6801 type suitable for optimization, and 1 otherwise. */
951fd09b
AM
6802
6803static int
f961d9dd 6804get_tls_mask (unsigned char **tls_maskp,
3a71aa26
AM
6805 unsigned long *toc_symndx,
6806 bfd_vma *toc_addend,
0d4792f7 6807 Elf_Internal_Sym **locsymsp,
3a71aa26
AM
6808 const Elf_Internal_Rela *rel,
6809 bfd *ibfd)
411e1bfb
AM
6810{
6811 unsigned long r_symndx;
0d4792f7 6812 int next_r;
411e1bfb
AM
6813 struct elf_link_hash_entry *h;
6814 Elf_Internal_Sym *sym;
6815 asection *sec;
6816 bfd_vma off;
6817
6818 r_symndx = ELF64_R_SYM (rel->r_info);
e7b938ca 6819 if (!get_sym_h (&h, &sym, &sec, tls_maskp, locsymsp, r_symndx, ibfd))
951fd09b 6820 return 0;
411e1bfb 6821
e7b938ca 6822 if ((*tls_maskp != NULL && **tls_maskp != 0)
411e1bfb 6823 || sec == NULL
6bee8834 6824 || ppc64_elf_section_data (sec) == NULL
7c8fe5c4 6825 || ppc64_elf_section_data (sec)->sec_type != sec_toc)
951fd09b 6826 return 1;
411e1bfb
AM
6827
6828 /* Look inside a TOC section too. */
6829 if (h != NULL)
6830 {
6831 BFD_ASSERT (h->root.type == bfd_link_hash_defined);
6832 off = h->root.u.def.value;
6833 }
6834 else
6835 off = sym->st_value;
6836 off += rel->r_addend;
6837 BFD_ASSERT (off % 8 == 0);
3a71aa26
AM
6838 r_symndx = ppc64_elf_section_data (sec)->u.toc.symndx[off / 8];
6839 next_r = ppc64_elf_section_data (sec)->u.toc.symndx[off / 8 + 1];
0d4792f7
AM
6840 if (toc_symndx != NULL)
6841 *toc_symndx = r_symndx;
3a71aa26
AM
6842 if (toc_addend != NULL)
6843 *toc_addend = ppc64_elf_section_data (sec)->u.toc.add[off / 8];
6844 if (!get_sym_h (&h, &sym, &sec, tls_maskp, locsymsp, r_symndx, ibfd))
6845 return 0;
854b41e7 6846 if ((h == NULL || is_static_defined (h))
0d4792f7
AM
6847 && (next_r == -1 || next_r == -2))
6848 return 1 - next_r;
951fd09b 6849 return 1;
411e1bfb
AM
6850}
6851
3b421ab3
AM
6852/* Find (or create) an entry in the tocsave hash table. */
6853
6854static struct tocsave_entry *
6855tocsave_find (struct ppc_link_hash_table *htab,
6856 enum insert_option insert,
6857 Elf_Internal_Sym **local_syms,
6858 const Elf_Internal_Rela *irela,
6859 bfd *ibfd)
6860{
6861 unsigned long r_indx;
6862 struct elf_link_hash_entry *h;
6863 Elf_Internal_Sym *sym;
6864 struct tocsave_entry ent, *p;
6865 hashval_t hash;
6866 struct tocsave_entry **slot;
6867
6868 r_indx = ELF64_R_SYM (irela->r_info);
6869 if (!get_sym_h (&h, &sym, &ent.sec, NULL, local_syms, r_indx, ibfd))
6870 return NULL;
6871 if (ent.sec == NULL || ent.sec->output_section == NULL)
6872 {
6873 (*_bfd_error_handler)
6874 (_("%B: undefined symbol on R_PPC64_TOCSAVE relocation"));
6875 return NULL;
6876 }
6877
6878 if (h != NULL)
6879 ent.offset = h->root.u.def.value;
6880 else
6881 ent.offset = sym->st_value;
6882 ent.offset += irela->r_addend;
6883
6884 hash = tocsave_htab_hash (&ent);
6885 slot = ((struct tocsave_entry **)
6886 htab_find_slot_with_hash (htab->tocsave_htab, &ent, hash, insert));
6887 if (slot == NULL)
6888 return NULL;
6889
6890 if (*slot == NULL)
6891 {
6892 p = (struct tocsave_entry *) bfd_alloc (ibfd, sizeof (*p));
6893 if (p == NULL)
6894 return NULL;
6895 *p = ent;
6896 *slot = p;
6897 }
6898 return *slot;
6899}
6900
754021d0 6901/* Adjust all global syms defined in opd sections. In gcc generated
8387904d 6902 code for the old ABI, these will already have been done. */
754021d0
AM
6903
6904static bfd_boolean
6905adjust_opd_syms (struct elf_link_hash_entry *h, void *inf ATTRIBUTE_UNUSED)
6906{
6907 struct ppc_link_hash_entry *eh;
6908 asection *sym_sec;
74f0fb50 6909 struct _opd_sec_data *opd;
754021d0
AM
6910
6911 if (h->root.type == bfd_link_hash_indirect)
6912 return TRUE;
6913
754021d0
AM
6914 if (h->root.type != bfd_link_hash_defined
6915 && h->root.type != bfd_link_hash_defweak)
6916 return TRUE;
6917
6918 eh = (struct ppc_link_hash_entry *) h;
6919 if (eh->adjust_done)
6920 return TRUE;
6921
6922 sym_sec = eh->elf.root.u.def.section;
74f0fb50
AM
6923 opd = get_opd_info (sym_sec);
6924 if (opd != NULL && opd->adjust != NULL)
754021d0 6925 {
74f0fb50 6926 long adjust = opd->adjust[eh->elf.root.u.def.value / 8];
4025353c
AM
6927 if (adjust == -1)
6928 {
6929 /* This entry has been deleted. */
b3fac117 6930 asection *dsec = ppc64_elf_tdata (sym_sec->owner)->deleted_section;
81688140
AM
6931 if (dsec == NULL)
6932 {
6933 for (dsec = sym_sec->owner->sections; dsec; dsec = dsec->next)
dbaa2011 6934 if (discarded_section (dsec))
81688140 6935 {
b3fac117 6936 ppc64_elf_tdata (sym_sec->owner)->deleted_section = dsec;
81688140
AM
6937 break;
6938 }
6939 }
4025353c 6940 eh->elf.root.u.def.value = 0;
81688140 6941 eh->elf.root.u.def.section = dsec;
4025353c
AM
6942 }
6943 else
6944 eh->elf.root.u.def.value += adjust;
754021d0
AM
6945 eh->adjust_done = 1;
6946 }
6947 return TRUE;
6948}
6949
8c1d1bb8
AM
6950/* Handles decrementing dynamic reloc counts for the reloc specified by
6951 R_INFO in section SEC. If LOCAL_SYMS is NULL, then H and SYM_SEC
6952 have already been determined. */
6953
6954static bfd_boolean
6955dec_dynrel_count (bfd_vma r_info,
6956 asection *sec,
6957 struct bfd_link_info *info,
6958 Elf_Internal_Sym **local_syms,
6959 struct elf_link_hash_entry *h,
6960 asection *sym_sec)
6961{
6962 enum elf_ppc64_reloc_type r_type;
6061a67d
AM
6963 struct elf_dyn_relocs *p;
6964 struct elf_dyn_relocs **pp;
8c1d1bb8
AM
6965
6966 /* Can this reloc be dynamic? This switch, and later tests here
6967 should be kept in sync with the code in check_relocs. */
6968 r_type = ELF64_R_TYPE (r_info);
6969 switch (r_type)
6970 {
6971 default:
6972 return TRUE;
6973
6974 case R_PPC64_TPREL16:
6975 case R_PPC64_TPREL16_LO:
6976 case R_PPC64_TPREL16_HI:
6977 case R_PPC64_TPREL16_HA:
6978 case R_PPC64_TPREL16_DS:
6979 case R_PPC64_TPREL16_LO_DS:
6980 case R_PPC64_TPREL16_HIGHER:
6981 case R_PPC64_TPREL16_HIGHERA:
6982 case R_PPC64_TPREL16_HIGHEST:
6983 case R_PPC64_TPREL16_HIGHESTA:
6984 if (!info->shared)
6985 return TRUE;
6986
6987 case R_PPC64_TPREL64:
6988 case R_PPC64_DTPMOD64:
6989 case R_PPC64_DTPREL64:
6990 case R_PPC64_ADDR64:
6991 case R_PPC64_REL30:
6992 case R_PPC64_REL32:
6993 case R_PPC64_REL64:
6994 case R_PPC64_ADDR14:
6995 case R_PPC64_ADDR14_BRNTAKEN:
6996 case R_PPC64_ADDR14_BRTAKEN:
6997 case R_PPC64_ADDR16:
6998 case R_PPC64_ADDR16_DS:
6999 case R_PPC64_ADDR16_HA:
7000 case R_PPC64_ADDR16_HI:
7001 case R_PPC64_ADDR16_HIGHER:
7002 case R_PPC64_ADDR16_HIGHERA:
7003 case R_PPC64_ADDR16_HIGHEST:
7004 case R_PPC64_ADDR16_HIGHESTA:
7005 case R_PPC64_ADDR16_LO:
7006 case R_PPC64_ADDR16_LO_DS:
7007 case R_PPC64_ADDR24:
7008 case R_PPC64_ADDR32:
7009 case R_PPC64_UADDR16:
7010 case R_PPC64_UADDR32:
7011 case R_PPC64_UADDR64:
7012 case R_PPC64_TOC:
7013 break;
7014 }
7015
7016 if (local_syms != NULL)
7017 {
7018 unsigned long r_symndx;
7019 Elf_Internal_Sym *sym;
7020 bfd *ibfd = sec->owner;
7021
7022 r_symndx = ELF64_R_SYM (r_info);
7023 if (!get_sym_h (&h, &sym, &sym_sec, NULL, local_syms, r_symndx, ibfd))
7024 return FALSE;
7025 }
7026
7027 if ((info->shared
1d483afe 7028 && (must_be_dyn_reloc (info, r_type)
8c1d1bb8
AM
7029 || (h != NULL
7030 && (!info->symbolic
7031 || h->root.type == bfd_link_hash_defweak
7032 || !h->def_regular))))
7033 || (ELIMINATE_COPY_RELOCS
7034 && !info->shared
7035 && h != NULL
7036 && (h->root.type == bfd_link_hash_defweak
7037 || !h->def_regular)))
7038 ;
7039 else
7040 return TRUE;
7041
7042 if (h != NULL)
7043 pp = &((struct ppc_link_hash_entry *) h)->dyn_relocs;
8c1d1bb8 7044 else
6edfbbad 7045 {
60124e18
AM
7046 if (sym_sec != NULL)
7047 {
7048 void *vpp = &elf_section_data (sym_sec)->local_dynrel;
6061a67d 7049 pp = (struct elf_dyn_relocs **) vpp;
60124e18
AM
7050 }
7051 else
7052 {
7053 void *vpp = &elf_section_data (sec)->local_dynrel;
6061a67d 7054 pp = (struct elf_dyn_relocs **) vpp;
60124e18
AM
7055 }
7056
7057 /* elf_gc_sweep may have already removed all dyn relocs associated
7058 with local syms for a given section. Don't report a dynreloc
7059 miscount. */
7060 if (*pp == NULL)
7061 return TRUE;
6edfbbad 7062 }
8c1d1bb8
AM
7063
7064 while ((p = *pp) != NULL)
7065 {
7066 if (p->sec == sec)
7067 {
1d483afe 7068 if (!must_be_dyn_reloc (info, r_type))
8c1d1bb8
AM
7069 p->pc_count -= 1;
7070 p->count -= 1;
7071 if (p->count == 0)
7072 *pp = p->next;
7073 return TRUE;
7074 }
7075 pp = &p->next;
7076 }
7077
8de848d8 7078 info->callbacks->einfo (_("%P: dynreloc miscount for %B, section %A\n"),
25f53a85 7079 sec->owner, sec);
8c1d1bb8
AM
7080 bfd_set_error (bfd_error_bad_value);
7081 return FALSE;
7082}
7083
754021d0
AM
7084/* Remove unused Official Procedure Descriptor entries. Currently we
7085 only remove those associated with functions in discarded link-once
7086 sections, or weakly defined functions that have been overridden. It
7087 would be possible to remove many more entries for statically linked
7088 applications. */
7089
b34976b6 7090bfd_boolean
33c0ec9d 7091ppc64_elf_edit_opd (struct bfd_link_info *info, bfd_boolean non_overlapping)
1e2f5b6e
AM
7092{
7093 bfd *ibfd;
754021d0 7094 bfd_boolean some_edited = FALSE;
3f764659 7095 asection *need_pad = NULL;
1e2f5b6e 7096
411e1bfb 7097 for (ibfd = info->input_bfds; ibfd != NULL; ibfd = ibfd->link_next)
1e2f5b6e
AM
7098 {
7099 asection *sec;
7100 Elf_Internal_Rela *relstart, *rel, *relend;
7101 Elf_Internal_Shdr *symtab_hdr;
6cdc0ccc 7102 Elf_Internal_Sym *local_syms;
1e2f5b6e 7103 bfd_vma offset;
74f0fb50 7104 struct _opd_sec_data *opd;
3f764659
JJ
7105 bfd_boolean need_edit, add_aux_fields;
7106 bfd_size_type cnt_16b = 0;
1e2f5b6e 7107
854b41e7
AM
7108 if (!is_ppc64_elf (ibfd))
7109 continue;
7110
1e2f5b6e 7111 sec = bfd_get_section_by_name (ibfd, ".opd");
46de2a7c 7112 if (sec == NULL || sec->size == 0)
1e2f5b6e
AM
7113 continue;
7114
dbaa2011 7115 if (sec->sec_info_type == SEC_INFO_TYPE_JUST_SYMS)
4b85d634
AM
7116 continue;
7117
1e2f5b6e
AM
7118 if (sec->output_section == bfd_abs_section_ptr)
7119 continue;
7120
7121 /* Look through the section relocs. */
7122 if ((sec->flags & SEC_RELOC) == 0 || sec->reloc_count == 0)
7123 continue;
7124
6cdc0ccc 7125 local_syms = NULL;
0ffa91dd 7126 symtab_hdr = &elf_symtab_hdr (ibfd);
1e2f5b6e
AM
7127
7128 /* Read the relocations. */
4ce794b7 7129 relstart = _bfd_elf_link_read_relocs (ibfd, sec, NULL, NULL,
45d6a902 7130 info->keep_memory);
1e2f5b6e 7131 if (relstart == NULL)
b34976b6 7132 return FALSE;
1e2f5b6e
AM
7133
7134 /* First run through the relocs to check they are sane, and to
7135 determine whether we need to edit this opd section. */
b34976b6 7136 need_edit = FALSE;
3f764659 7137 need_pad = sec;
1e2f5b6e
AM
7138 offset = 0;
7139 relend = relstart + sec->reloc_count;
50bc7936 7140 for (rel = relstart; rel < relend; )
1e2f5b6e 7141 {
04c9666a 7142 enum elf_ppc64_reloc_type r_type;
1e2f5b6e
AM
7143 unsigned long r_symndx;
7144 asection *sym_sec;
7145 struct elf_link_hash_entry *h;
7146 Elf_Internal_Sym *sym;
7147
3f764659 7148 /* .opd contains a regular array of 16 or 24 byte entries. We're
1e2f5b6e
AM
7149 only interested in the reloc pointing to a function entry
7150 point. */
50bc7936
AM
7151 if (rel->r_offset != offset
7152 || rel + 1 >= relend
7153 || (rel + 1)->r_offset != offset + 8)
1e2f5b6e
AM
7154 {
7155 /* If someone messes with .opd alignment then after a
7156 "ld -r" we might have padding in the middle of .opd.
7157 Also, there's nothing to prevent someone putting
7158 something silly in .opd with the assembler. No .opd
b34976b6 7159 optimization for them! */
3f764659 7160 broken_opd:
1e2f5b6e 7161 (*_bfd_error_handler)
d003868e 7162 (_("%B: .opd is not a regular array of opd entries"), ibfd);
b34976b6 7163 need_edit = FALSE;
1e2f5b6e
AM
7164 break;
7165 }
7166
50bc7936
AM
7167 if ((r_type = ELF64_R_TYPE (rel->r_info)) != R_PPC64_ADDR64
7168 || (r_type = ELF64_R_TYPE ((rel + 1)->r_info)) != R_PPC64_TOC)
7169 {
7170 (*_bfd_error_handler)
d003868e
AM
7171 (_("%B: unexpected reloc type %u in .opd section"),
7172 ibfd, r_type);
50bc7936
AM
7173 need_edit = FALSE;
7174 break;
7175 }
7176
1e2f5b6e 7177 r_symndx = ELF64_R_SYM (rel->r_info);
411e1bfb
AM
7178 if (!get_sym_h (&h, &sym, &sym_sec, NULL, &local_syms,
7179 r_symndx, ibfd))
50bc7936 7180 goto error_ret;
1e2f5b6e
AM
7181
7182 if (sym_sec == NULL || sym_sec->owner == NULL)
7183 {
411e1bfb
AM
7184 const char *sym_name;
7185 if (h != NULL)
7186 sym_name = h->root.root.string;
7187 else
26c61ae5
L
7188 sym_name = bfd_elf_sym_name (ibfd, symtab_hdr, sym,
7189 sym_sec);
411e1bfb 7190
1e2f5b6e 7191 (*_bfd_error_handler)
d003868e
AM
7192 (_("%B: undefined sym `%s' in .opd section"),
7193 ibfd, sym_name);
b34976b6 7194 need_edit = FALSE;
1e2f5b6e
AM
7195 break;
7196 }
7197
51020317
AM
7198 /* opd entries are always for functions defined in the
7199 current input bfd. If the symbol isn't defined in the
7200 input bfd, then we won't be using the function in this
7201 bfd; It must be defined in a linkonce section in another
7202 bfd, or is weak. It's also possible that we are
7203 discarding the function due to a linker script /DISCARD/,
7204 which we test for via the output_section. */
7205 if (sym_sec->owner != ibfd
7206 || sym_sec->output_section == bfd_abs_section_ptr)
b34976b6 7207 need_edit = TRUE;
1e2f5b6e 7208
50bc7936 7209 rel += 2;
3f764659
JJ
7210 if (rel == relend
7211 || (rel + 1 == relend && rel->r_offset == offset + 16))
7212 {
7213 if (sec->size == offset + 24)
7214 {
7215 need_pad = NULL;
7216 break;
7217 }
7218 if (rel == relend && sec->size == offset + 16)
7219 {
7220 cnt_16b++;
7221 break;
7222 }
7223 goto broken_opd;
7224 }
7225
7226 if (rel->r_offset == offset + 24)
7227 offset += 24;
7228 else if (rel->r_offset != offset + 16)
7229 goto broken_opd;
7230 else if (rel + 1 < relend
7231 && ELF64_R_TYPE (rel[0].r_info) == R_PPC64_ADDR64
7232 && ELF64_R_TYPE (rel[1].r_info) == R_PPC64_TOC)
7233 {
7234 offset += 16;
7235 cnt_16b++;
7236 }
7237 else if (rel + 2 < relend
7238 && ELF64_R_TYPE (rel[1].r_info) == R_PPC64_ADDR64
7239 && ELF64_R_TYPE (rel[2].r_info) == R_PPC64_TOC)
7240 {
7241 offset += 24;
7242 rel += 1;
7243 }
7244 else
7245 goto broken_opd;
1e2f5b6e
AM
7246 }
7247
3f764659
JJ
7248 add_aux_fields = non_overlapping && cnt_16b > 0;
7249
7250 if (need_edit || add_aux_fields)
1e2f5b6e
AM
7251 {
7252 Elf_Internal_Rela *write_rel;
d4730f92 7253 Elf_Internal_Shdr *rel_hdr;
1e2f5b6e 7254 bfd_byte *rptr, *wptr;
983bddc8 7255 bfd_byte *new_contents;
b34976b6 7256 bfd_boolean skip;
3f764659 7257 long opd_ent_size;
74f0fb50
AM
7258 bfd_size_type amt;
7259
983bddc8 7260 new_contents = NULL;
74f0fb50
AM
7261 amt = sec->size * sizeof (long) / 8;
7262 opd = &ppc64_elf_section_data (sec)->u.opd;
33c0ec9d 7263 opd->adjust = bfd_zalloc (sec->owner, amt);
74f0fb50
AM
7264 if (opd->adjust == NULL)
7265 return FALSE;
7266 ppc64_elf_section_data (sec)->sec_type = sec_opd;
1e2f5b6e
AM
7267
7268 /* This seems a waste of time as input .opd sections are all
7269 zeros as generated by gcc, but I suppose there's no reason
7270 this will always be so. We might start putting something in
7271 the third word of .opd entries. */
7272 if ((sec->flags & SEC_IN_MEMORY) == 0)
7273 {
eea6121a
AM
7274 bfd_byte *loc;
7275 if (!bfd_malloc_and_get_section (ibfd, sec, &loc))
6cdc0ccc 7276 {
eea6121a
AM
7277 if (loc != NULL)
7278 free (loc);
50bc7936 7279 error_ret:
6cdc0ccc
AM
7280 if (local_syms != NULL
7281 && symtab_hdr->contents != (unsigned char *) local_syms)
7282 free (local_syms);
6cdc0ccc
AM
7283 if (elf_section_data (sec)->relocs != relstart)
7284 free (relstart);
b34976b6 7285 return FALSE;
6cdc0ccc 7286 }
1e2f5b6e
AM
7287 sec->contents = loc;
7288 sec->flags |= (SEC_IN_MEMORY | SEC_HAS_CONTENTS);
7289 }
7290
7291 elf_section_data (sec)->relocs = relstart;
7292
3f764659 7293 new_contents = sec->contents;
3f764659
JJ
7294 if (add_aux_fields)
7295 {
7296 new_contents = bfd_malloc (sec->size + cnt_16b * 8);
7297 if (new_contents == NULL)
7298 return FALSE;
7299 need_pad = FALSE;
3f764659 7300 }
b4f4e59f
AM
7301 wptr = new_contents;
7302 rptr = sec->contents;
3f764659 7303
1e2f5b6e 7304 write_rel = relstart;
b34976b6 7305 skip = FALSE;
1e2f5b6e 7306 offset = 0;
3f764659 7307 opd_ent_size = 0;
1e2f5b6e
AM
7308 for (rel = relstart; rel < relend; rel++)
7309 {
50bc7936
AM
7310 unsigned long r_symndx;
7311 asection *sym_sec;
7312 struct elf_link_hash_entry *h;
7313 Elf_Internal_Sym *sym;
7314
7315 r_symndx = ELF64_R_SYM (rel->r_info);
7316 if (!get_sym_h (&h, &sym, &sym_sec, NULL, &local_syms,
d37c89e5 7317 r_symndx, ibfd))
50bc7936
AM
7318 goto error_ret;
7319
1e2f5b6e
AM
7320 if (rel->r_offset == offset)
7321 {
50bc7936 7322 struct ppc_link_hash_entry *fdh = NULL;
3f764659
JJ
7323
7324 /* See if the .opd entry is full 24 byte or
7325 16 byte (with fd_aux entry overlapped with next
7326 fd_func). */
7327 opd_ent_size = 24;
7328 if ((rel + 2 == relend && sec->size == offset + 16)
7329 || (rel + 3 < relend
7330 && rel[2].r_offset == offset + 16
7331 && rel[3].r_offset == offset + 24
7332 && ELF64_R_TYPE (rel[2].r_info) == R_PPC64_ADDR64
7333 && ELF64_R_TYPE (rel[3].r_info) == R_PPC64_TOC))
7334 opd_ent_size = 16;
7335
4025353c
AM
7336 if (h != NULL
7337 && h->root.root.string[0] == '.')
c4f68ce3 7338 {
4dfe6ac6
NC
7339 struct ppc_link_hash_table *htab;
7340
7341 htab = ppc_hash_table (info);
7342 if (htab != NULL)
7343 fdh = lookup_fdh ((struct ppc_link_hash_entry *) h,
7344 htab);
c4f68ce3
AM
7345 if (fdh != NULL
7346 && fdh->elf.root.type != bfd_link_hash_defined
7347 && fdh->elf.root.type != bfd_link_hash_defweak)
7348 fdh = NULL;
7349 }
1e2f5b6e 7350
51020317
AM
7351 skip = (sym_sec->owner != ibfd
7352 || sym_sec->output_section == bfd_abs_section_ptr);
a4aa0fb7
AM
7353 if (skip)
7354 {
4025353c 7355 if (fdh != NULL && sym_sec->owner == ibfd)
a4aa0fb7
AM
7356 {
7357 /* Arrange for the function descriptor sym
7358 to be dropped. */
d6fe2dc1
AM
7359 fdh->elf.root.u.def.value = 0;
7360 fdh->elf.root.u.def.section = sym_sec;
a4aa0fb7 7361 }
74f0fb50 7362 opd->adjust[rel->r_offset / 8] = -1;
a4aa0fb7
AM
7363 }
7364 else
1e2f5b6e
AM
7365 {
7366 /* We'll be keeping this opd entry. */
7367
4025353c 7368 if (fdh != NULL)
1e2f5b6e 7369 {
754021d0
AM
7370 /* Redefine the function descriptor symbol to
7371 this location in the opd section. It is
7372 necessary to update the value here rather
7373 than using an array of adjustments as we do
7374 for local symbols, because various places
7375 in the generic ELF code use the value
7376 stored in u.def.value. */
3f764659 7377 fdh->elf.root.u.def.value = wptr - new_contents;
754021d0 7378 fdh->adjust_done = 1;
1e2f5b6e 7379 }
754021d0
AM
7380
7381 /* Local syms are a bit tricky. We could
7382 tweak them as they can be cached, but
7383 we'd need to look through the local syms
7384 for the function descriptor sym which we
7385 don't have at the moment. So keep an
7386 array of adjustments. */
74f0fb50 7387 opd->adjust[rel->r_offset / 8]
3f764659 7388 = (wptr - new_contents) - (rptr - sec->contents);
1e2f5b6e
AM
7389
7390 if (wptr != rptr)
3f764659
JJ
7391 memcpy (wptr, rptr, opd_ent_size);
7392 wptr += opd_ent_size;
7393 if (add_aux_fields && opd_ent_size == 16)
7394 {
7395 memset (wptr, '\0', 8);
7396 wptr += 8;
7397 }
1e2f5b6e 7398 }
3f764659
JJ
7399 rptr += opd_ent_size;
7400 offset += opd_ent_size;
1e2f5b6e
AM
7401 }
7402
50bc7936
AM
7403 if (skip)
7404 {
60124e18
AM
7405 if (!NO_OPD_RELOCS
7406 && !info->relocatable
18d944df
AM
7407 && !dec_dynrel_count (rel->r_info, sec, info,
7408 NULL, h, sym_sec))
8c1d1bb8 7409 goto error_ret;
50bc7936
AM
7410 }
7411 else
1e2f5b6e 7412 {
50bc7936
AM
7413 /* We need to adjust any reloc offsets to point to the
7414 new opd entries. While we're at it, we may as well
7415 remove redundant relocs. */
74f0fb50 7416 rel->r_offset += opd->adjust[(offset - opd_ent_size) / 8];
1e2f5b6e
AM
7417 if (write_rel != rel)
7418 memcpy (write_rel, rel, sizeof (*rel));
7419 ++write_rel;
7420 }
7421 }
7422
3f764659 7423 sec->size = wptr - new_contents;
1e2f5b6e 7424 sec->reloc_count = write_rel - relstart;
3f764659
JJ
7425 if (add_aux_fields)
7426 {
7427 free (sec->contents);
7428 sec->contents = new_contents;
7429 }
7430
05bf9422 7431 /* Fudge the header size too, as this is used later in
cdcf6e38 7432 elf_bfd_final_link if we are emitting relocs. */
d4730f92
BS
7433 rel_hdr = _bfd_elf_single_rel_hdr (sec);
7434 rel_hdr->sh_size = sec->reloc_count * rel_hdr->sh_entsize;
754021d0 7435 some_edited = TRUE;
1e2f5b6e 7436 }
6cdc0ccc 7437 else if (elf_section_data (sec)->relocs != relstart)
1e2f5b6e 7438 free (relstart);
6cdc0ccc 7439
411e1bfb
AM
7440 if (local_syms != NULL
7441 && symtab_hdr->contents != (unsigned char *) local_syms)
7442 {
7443 if (!info->keep_memory)
7444 free (local_syms);
7445 else
7446 symtab_hdr->contents = (unsigned char *) local_syms;
7447 }
7448 }
7449
754021d0
AM
7450 if (some_edited)
7451 elf_link_hash_traverse (elf_hash_table (info), adjust_opd_syms, NULL);
7452
3f764659
JJ
7453 /* If we are doing a final link and the last .opd entry is just 16 byte
7454 long, add a 8 byte padding after it. */
7455 if (need_pad != NULL && !info->relocatable)
7456 {
7457 bfd_byte *p;
7458
7459 if ((need_pad->flags & SEC_IN_MEMORY) == 0)
7460 {
7461 BFD_ASSERT (need_pad->size > 0);
7462
7463 p = bfd_malloc (need_pad->size + 8);
7464 if (p == NULL)
7465 return FALSE;
699733f6 7466
3f764659
JJ
7467 if (! bfd_get_section_contents (need_pad->owner, need_pad,
7468 p, 0, need_pad->size))
7469 return FALSE;
7470
7471 need_pad->contents = p;
7472 need_pad->flags |= (SEC_IN_MEMORY | SEC_HAS_CONTENTS);
7473 }
7474 else
7475 {
7476 p = bfd_realloc (need_pad->contents, need_pad->size + 8);
7477 if (p == NULL)
7478 return FALSE;
7479
7480 need_pad->contents = p;
7481 }
7482
7483 memset (need_pad->contents + need_pad->size, 0, 8);
7484 need_pad->size += 8;
7485 }
7486
411e1bfb
AM
7487 return TRUE;
7488}
7489
e1918d23 7490/* Set htab->tls_get_addr and call the generic ELF tls_setup function. */
411e1bfb 7491
e1918d23 7492asection *
33c0ec9d
AM
7493ppc64_elf_tls_setup (struct bfd_link_info *info,
7494 int no_tls_get_addr_opt,
7495 int *no_multi_toc)
411e1bfb 7496{
411e1bfb
AM
7497 struct ppc_link_hash_table *htab;
7498
411e1bfb 7499 htab = ppc_hash_table (info);
4dfe6ac6
NC
7500 if (htab == NULL)
7501 return NULL;
7502
33c0ec9d
AM
7503 if (*no_multi_toc)
7504 htab->do_multi_toc = 0;
7505 else if (!htab->do_multi_toc)
7506 *no_multi_toc = 1;
7507
3a71aa26
AM
7508 htab->tls_get_addr = ((struct ppc_link_hash_entry *)
7509 elf_link_hash_lookup (&htab->elf, ".__tls_get_addr",
7510 FALSE, FALSE, TRUE));
a7f2871e
AM
7511 /* Move dynamic linking info to the function descriptor sym. */
7512 if (htab->tls_get_addr != NULL)
7513 func_desc_adjust (&htab->tls_get_addr->elf, info);
3a71aa26
AM
7514 htab->tls_get_addr_fd = ((struct ppc_link_hash_entry *)
7515 elf_link_hash_lookup (&htab->elf, "__tls_get_addr",
7516 FALSE, FALSE, TRUE));
a7f2871e
AM
7517 if (!no_tls_get_addr_opt)
7518 {
7519 struct elf_link_hash_entry *opt, *opt_fd, *tga, *tga_fd;
7520
7521 opt = elf_link_hash_lookup (&htab->elf, ".__tls_get_addr_opt",
7522 FALSE, FALSE, TRUE);
7523 if (opt != NULL)
7524 func_desc_adjust (opt, info);
7525 opt_fd = elf_link_hash_lookup (&htab->elf, "__tls_get_addr_opt",
7526 FALSE, FALSE, TRUE);
7527 if (opt_fd != NULL
7528 && (opt_fd->root.type == bfd_link_hash_defined
7529 || opt_fd->root.type == bfd_link_hash_defweak))
7530 {
7531 /* If glibc supports an optimized __tls_get_addr call stub,
7532 signalled by the presence of __tls_get_addr_opt, and we'll
7533 be calling __tls_get_addr via a plt call stub, then
7534 make __tls_get_addr point to __tls_get_addr_opt. */
7535 tga_fd = &htab->tls_get_addr_fd->elf;
7536 if (htab->elf.dynamic_sections_created
7537 && tga_fd != NULL
7538 && (tga_fd->type == STT_FUNC
7539 || tga_fd->needs_plt)
7540 && !(SYMBOL_CALLS_LOCAL (info, tga_fd)
7541 || (ELF_ST_VISIBILITY (tga_fd->other) != STV_DEFAULT
7542 && tga_fd->root.type == bfd_link_hash_undefweak)))
7543 {
7544 struct plt_entry *ent;
7545
7546 for (ent = tga_fd->plt.plist; ent != NULL; ent = ent->next)
7547 if (ent->plt.refcount > 0)
7548 break;
7549 if (ent != NULL)
7550 {
7551 tga_fd->root.type = bfd_link_hash_indirect;
7552 tga_fd->root.u.i.link = &opt_fd->root;
7553 ppc64_elf_copy_indirect_symbol (info, opt_fd, tga_fd);
7554 if (opt_fd->dynindx != -1)
7555 {
7556 /* Use __tls_get_addr_opt in dynamic relocations. */
7557 opt_fd->dynindx = -1;
7558 _bfd_elf_strtab_delref (elf_hash_table (info)->dynstr,
7559 opt_fd->dynstr_index);
7560 if (!bfd_elf_link_record_dynamic_symbol (info, opt_fd))
854b41e7 7561 return NULL;
a7f2871e
AM
7562 }
7563 htab->tls_get_addr_fd = (struct ppc_link_hash_entry *) opt_fd;
7564 tga = &htab->tls_get_addr->elf;
7565 if (opt != NULL && tga != NULL)
7566 {
7567 tga->root.type = bfd_link_hash_indirect;
7568 tga->root.u.i.link = &opt->root;
7569 ppc64_elf_copy_indirect_symbol (info, opt, tga);
7570 _bfd_elf_link_hash_hide_symbol (info, opt,
7571 tga->forced_local);
7572 htab->tls_get_addr = (struct ppc_link_hash_entry *) opt;
7573 }
7574 htab->tls_get_addr_fd->oh = htab->tls_get_addr;
7575 htab->tls_get_addr_fd->is_func_descriptor = 1;
7576 if (htab->tls_get_addr != NULL)
7577 {
7578 htab->tls_get_addr->oh = htab->tls_get_addr_fd;
7579 htab->tls_get_addr->is_func = 1;
7580 }
7581 }
7582 }
7583 }
7584 else
7585 no_tls_get_addr_opt = TRUE;
7586 }
7587 htab->no_tls_get_addr_opt = no_tls_get_addr_opt;
33c0ec9d 7588 return _bfd_elf_tls_setup (info->output_bfd, info);
3a71aa26 7589}
8387904d 7590
3a71aa26
AM
7591/* Return TRUE iff REL is a branch reloc with a global symbol matching
7592 HASH1 or HASH2. */
8387904d 7593
3a71aa26
AM
7594static bfd_boolean
7595branch_reloc_hash_match (const bfd *ibfd,
7596 const Elf_Internal_Rela *rel,
7597 const struct ppc_link_hash_entry *hash1,
7598 const struct ppc_link_hash_entry *hash2)
7599{
7600 Elf_Internal_Shdr *symtab_hdr = &elf_symtab_hdr (ibfd);
7601 enum elf_ppc64_reloc_type r_type = ELF64_R_TYPE (rel->r_info);
7602 unsigned int r_symndx = ELF64_R_SYM (rel->r_info);
7603
e054468f 7604 if (r_symndx >= symtab_hdr->sh_info && is_branch_reloc (r_type))
8387904d 7605 {
3a71aa26
AM
7606 struct elf_link_hash_entry **sym_hashes = elf_sym_hashes (ibfd);
7607 struct elf_link_hash_entry *h;
8387904d 7608
3a71aa26 7609 h = sym_hashes[r_symndx - symtab_hdr->sh_info];
b31867b6 7610 h = elf_follow_link (h);
3a71aa26
AM
7611 if (h == &hash1->elf || h == &hash2->elf)
7612 return TRUE;
a48ebf4d 7613 }
3a71aa26 7614 return FALSE;
951fd09b 7615}
411e1bfb 7616
951fd09b
AM
7617/* Run through all the TLS relocs looking for optimization
7618 opportunities. The linker has been hacked (see ppc64elf.em) to do
7619 a preliminary section layout so that we know the TLS segment
7620 offsets. We can't optimize earlier because some optimizations need
7621 to know the tp offset, and we need to optimize before allocating
7622 dynamic relocations. */
7623
7624bfd_boolean
33c0ec9d 7625ppc64_elf_tls_optimize (struct bfd_link_info *info)
951fd09b
AM
7626{
7627 bfd *ibfd;
7628 asection *sec;
7629 struct ppc_link_hash_table *htab;
663a1470 7630 unsigned char *toc_ref;
102890f0 7631 int pass;
951fd09b 7632
1d483afe 7633 if (info->relocatable || !info->executable)
411e1bfb
AM
7634 return TRUE;
7635
951fd09b 7636 htab = ppc_hash_table (info);
4dfe6ac6
NC
7637 if (htab == NULL)
7638 return FALSE;
7639
663a1470
AM
7640 /* Make two passes over the relocs. On the first pass, mark toc
7641 entries involved with tls relocs, and check that tls relocs
7642 involved in setting up a tls_get_addr call are indeed followed by
7643 such a call. If they are not, we can't do any tls optimization.
7644 On the second pass twiddle tls_mask flags to notify
7645 relocate_section that optimization can be done, and adjust got
7646 and plt refcounts. */
7647 toc_ref = NULL;
7648 for (pass = 0; pass < 2; ++pass)
7649 for (ibfd = info->input_bfds; ibfd != NULL; ibfd = ibfd->link_next)
7650 {
7651 Elf_Internal_Sym *locsyms = NULL;
7652 asection *toc = bfd_get_section_by_name (ibfd, ".toc");
7653
102890f0
AM
7654 for (sec = ibfd->sections; sec != NULL; sec = sec->next)
7655 if (sec->has_tls_reloc && !bfd_is_abs_section (sec->output_section))
7656 {
7657 Elf_Internal_Rela *relstart, *rel, *relend;
663a1470 7658 bfd_boolean found_tls_get_addr_arg = 0;
411e1bfb 7659
102890f0
AM
7660 /* Read the relocations. */
7661 relstart = _bfd_elf_link_read_relocs (ibfd, sec, NULL, NULL,
7662 info->keep_memory);
7663 if (relstart == NULL)
7664 return FALSE;
411e1bfb 7665
102890f0
AM
7666 relend = relstart + sec->reloc_count;
7667 for (rel = relstart; rel < relend; rel++)
7668 {
7669 enum elf_ppc64_reloc_type r_type;
7670 unsigned long r_symndx;
7671 struct elf_link_hash_entry *h;
7672 Elf_Internal_Sym *sym;
7673 asection *sym_sec;
f961d9dd
AM
7674 unsigned char *tls_mask;
7675 unsigned char tls_set, tls_clear, tls_type = 0;
102890f0
AM
7676 bfd_vma value;
7677 bfd_boolean ok_tprel, is_local;
7678 long toc_ref_index = 0;
7679 int expecting_tls_get_addr = 0;
663a1470 7680 bfd_boolean ret = FALSE;
411e1bfb 7681
102890f0
AM
7682 r_symndx = ELF64_R_SYM (rel->r_info);
7683 if (!get_sym_h (&h, &sym, &sym_sec, &tls_mask, &locsyms,
7684 r_symndx, ibfd))
7685 {
7686 err_free_rel:
7687 if (elf_section_data (sec)->relocs != relstart)
7688 free (relstart);
7689 if (toc_ref != NULL)
7690 free (toc_ref);
7691 if (locsyms != NULL
0ffa91dd 7692 && (elf_symtab_hdr (ibfd).contents
102890f0
AM
7693 != (unsigned char *) locsyms))
7694 free (locsyms);
663a1470 7695 return ret;
102890f0 7696 }
411e1bfb 7697
102890f0
AM
7698 if (h != NULL)
7699 {
766bc656
AM
7700 if (h->root.type == bfd_link_hash_defined
7701 || h->root.type == bfd_link_hash_defweak)
7702 value = h->root.u.def.value;
7703 else if (h->root.type == bfd_link_hash_undefweak)
7704 value = 0;
7705 else
663a1470
AM
7706 {
7707 found_tls_get_addr_arg = 0;
7708 continue;
7709 }
102890f0
AM
7710 }
7711 else
7712 /* Symbols referenced by TLS relocs must be of type
7713 STT_TLS. So no need for .opd local sym adjust. */
7714 value = sym->st_value;
7715
7716 ok_tprel = FALSE;
7717 is_local = FALSE;
7718 if (h == NULL
7719 || !h->def_dynamic)
7720 {
7721 is_local = TRUE;
766bc656
AM
7722 if (h != NULL
7723 && h->root.type == bfd_link_hash_undefweak)
7724 ok_tprel = TRUE;
7725 else
7726 {
7727 value += sym_sec->output_offset;
7728 value += sym_sec->output_section->vma;
7729 value -= htab->elf.tls_sec->vma;
7730 ok_tprel = (value + TP_OFFSET + ((bfd_vma) 1 << 31)
7731 < (bfd_vma) 1 << 32);
7732 }
102890f0 7733 }
951fd09b 7734
102890f0 7735 r_type = ELF64_R_TYPE (rel->r_info);
663a1470
AM
7736 /* If this section has old-style __tls_get_addr calls
7737 without marker relocs, then check that each
7738 __tls_get_addr call reloc is preceded by a reloc
7739 that conceivably belongs to the __tls_get_addr arg
7740 setup insn. If we don't find matching arg setup
7741 relocs, don't do any tls optimization. */
7742 if (pass == 0
7743 && sec->has_tls_get_addr_call
7744 && h != NULL
7745 && (h == &htab->tls_get_addr->elf
7746 || h == &htab->tls_get_addr_fd->elf)
7747 && !found_tls_get_addr_arg
7748 && is_branch_reloc (r_type))
7749 {
25f53a85 7750 info->callbacks->minfo (_("%H __tls_get_addr lost arg, "
663a1470
AM
7751 "TLS optimization disabled\n"),
7752 ibfd, sec, rel->r_offset);
7753 ret = TRUE;
7754 goto err_free_rel;
7755 }
7756
7757 found_tls_get_addr_arg = 0;
102890f0
AM
7758 switch (r_type)
7759 {
7760 case R_PPC64_GOT_TLSLD16:
7761 case R_PPC64_GOT_TLSLD16_LO:
7762 expecting_tls_get_addr = 1;
663a1470 7763 found_tls_get_addr_arg = 1;
102890f0
AM
7764 /* Fall thru */
7765
7766 case R_PPC64_GOT_TLSLD16_HI:
7767 case R_PPC64_GOT_TLSLD16_HA:
7768 /* These relocs should never be against a symbol
7769 defined in a shared lib. Leave them alone if
7770 that turns out to be the case. */
7771 if (!is_local)
7772 continue;
411e1bfb 7773
102890f0 7774 /* LD -> LE */
411e1bfb 7775 tls_set = 0;
102890f0
AM
7776 tls_clear = TLS_LD;
7777 tls_type = TLS_TLS | TLS_LD;
7778 break;
411e1bfb 7779
102890f0
AM
7780 case R_PPC64_GOT_TLSGD16:
7781 case R_PPC64_GOT_TLSGD16_LO:
7782 expecting_tls_get_addr = 1;
663a1470 7783 found_tls_get_addr_arg = 1;
102890f0
AM
7784 /* Fall thru */
7785
7786 case R_PPC64_GOT_TLSGD16_HI:
7787 case R_PPC64_GOT_TLSGD16_HA:
7788 if (ok_tprel)
7789 /* GD -> LE */
411e1bfb 7790 tls_set = 0;
102890f0
AM
7791 else
7792 /* GD -> IE */
7793 tls_set = TLS_TLS | TLS_TPRELGD;
7794 tls_clear = TLS_GD;
7795 tls_type = TLS_TLS | TLS_GD;
7796 break;
7797
7798 case R_PPC64_GOT_TPREL16_DS:
7799 case R_PPC64_GOT_TPREL16_LO_DS:
7800 case R_PPC64_GOT_TPREL16_HI:
7801 case R_PPC64_GOT_TPREL16_HA:
7802 if (ok_tprel)
7803 {
7804 /* IE -> LE */
7805 tls_set = 0;
7806 tls_clear = TLS_TPREL;
7807 tls_type = TLS_TLS | TLS_TPREL;
7808 break;
7809 }
411e1bfb
AM
7810 continue;
7811
727fc41e
AM
7812 case R_PPC64_TLSGD:
7813 case R_PPC64_TLSLD:
663a1470
AM
7814 found_tls_get_addr_arg = 1;
7815 /* Fall thru */
7816
7817 case R_PPC64_TLS:
7818 case R_PPC64_TOC16:
7819 case R_PPC64_TOC16_LO:
102890f0
AM
7820 if (sym_sec == NULL || sym_sec != toc)
7821 continue;
7822
7823 /* Mark this toc entry as referenced by a TLS
7824 code sequence. We can do that now in the
7825 case of R_PPC64_TLS, and after checking for
7826 tls_get_addr for the TOC16 relocs. */
7827 if (toc_ref == NULL)
663a1470
AM
7828 toc_ref = bfd_zmalloc (toc->output_section->rawsize / 8);
7829 if (toc_ref == NULL)
7830 goto err_free_rel;
7831
102890f0
AM
7832 if (h != NULL)
7833 value = h->root.u.def.value;
7834 else
7835 value = sym->st_value;
7836 value += rel->r_addend;
7837 BFD_ASSERT (value < toc->size && value % 8 == 0);
663a1470 7838 toc_ref_index = (value + toc->output_offset) / 8;
727fc41e
AM
7839 if (r_type == R_PPC64_TLS
7840 || r_type == R_PPC64_TLSGD
7841 || r_type == R_PPC64_TLSLD)
102890f0
AM
7842 {
7843 toc_ref[toc_ref_index] = 1;
7844 continue;
7845 }
7846
7847 if (pass != 0 && toc_ref[toc_ref_index] == 0)
7848 continue;
7849
7850 tls_set = 0;
7851 tls_clear = 0;
7852 expecting_tls_get_addr = 2;
7853 break;
7854
7855 case R_PPC64_TPREL64:
7856 if (pass == 0
7857 || sec != toc
7858 || toc_ref == NULL
663a1470 7859 || !toc_ref[(rel->r_offset + toc->output_offset) / 8])
102890f0
AM
7860 continue;
7861 if (ok_tprel)
7862 {
7863 /* IE -> LE */
7864 tls_set = TLS_EXPLICIT;
7865 tls_clear = TLS_TPREL;
7866 break;
7867 }
7868 continue;
7869
7870 case R_PPC64_DTPMOD64:
7871 if (pass == 0
7872 || sec != toc
7873 || toc_ref == NULL
663a1470 7874 || !toc_ref[(rel->r_offset + toc->output_offset) / 8])
102890f0
AM
7875 continue;
7876 if (rel + 1 < relend
7877 && (rel[1].r_info
7878 == ELF64_R_INFO (r_symndx, R_PPC64_DTPREL64))
7879 && rel[1].r_offset == rel->r_offset + 8)
7880 {
7881 if (ok_tprel)
7882 /* GD -> LE */
7883 tls_set = TLS_EXPLICIT | TLS_GD;
7884 else
7885 /* GD -> IE */
7886 tls_set = TLS_EXPLICIT | TLS_GD | TLS_TPRELGD;
7887 tls_clear = TLS_GD;
7888 }
7889 else
7890 {
7891 if (!is_local)
7892 continue;
7893
7894 /* LD -> LE */
7895 tls_set = TLS_EXPLICIT;
7896 tls_clear = TLS_LD;
7897 }
7898 break;
7899
7900 default:
7901 continue;
7902 }
7903
7904 if (pass == 0)
7905 {
727fc41e
AM
7906 if (!expecting_tls_get_addr
7907 || !sec->has_tls_get_addr_call)
102890f0
AM
7908 continue;
7909
3a71aa26
AM
7910 if (rel + 1 < relend
7911 && branch_reloc_hash_match (ibfd, rel + 1,
7912 htab->tls_get_addr,
7913 htab->tls_get_addr_fd))
102890f0 7914 {
3a71aa26 7915 if (expecting_tls_get_addr == 2)
102890f0 7916 {
3a71aa26 7917 /* Check for toc tls entries. */
f961d9dd 7918 unsigned char *toc_tls;
3a71aa26
AM
7919 int retval;
7920
7921 retval = get_tls_mask (&toc_tls, NULL, NULL,
7922 &locsyms,
7923 rel, ibfd);
7924 if (retval == 0)
7925 goto err_free_rel;
663a1470
AM
7926 if (toc_tls != NULL)
7927 {
7928 if ((*toc_tls & (TLS_GD | TLS_LD)) != 0)
7929 found_tls_get_addr_arg = 1;
7930 if (retval > 1)
7931 toc_ref[toc_ref_index] = 1;
7932 }
102890f0 7933 }
3a71aa26 7934 continue;
102890f0
AM
7935 }
7936
7937 if (expecting_tls_get_addr != 1)
7938 continue;
7939
7940 /* Uh oh, we didn't find the expected call. We
7941 could just mark this symbol to exclude it
7942 from tls optimization but it's safer to skip
663a1470 7943 the entire optimization. */
25f53a85 7944 info->callbacks->minfo (_("%H arg lost __tls_get_addr, "
663a1470
AM
7945 "TLS optimization disabled\n"),
7946 ibfd, sec, rel->r_offset);
7947 ret = TRUE;
7948 goto err_free_rel;
102890f0
AM
7949 }
7950
85f7a9cb 7951 if (expecting_tls_get_addr && htab->tls_get_addr != NULL)
102890f0
AM
7952 {
7953 struct plt_entry *ent;
7954 for (ent = htab->tls_get_addr->elf.plt.plist;
7955 ent != NULL;
7956 ent = ent->next)
7957 if (ent->addend == 0)
411e1bfb 7958 {
102890f0 7959 if (ent->plt.refcount > 0)
30038c59 7960 {
102890f0
AM
7961 ent->plt.refcount -= 1;
7962 expecting_tls_get_addr = 0;
30038c59 7963 }
102890f0 7964 break;
411e1bfb 7965 }
102890f0 7966 }
411e1bfb 7967
85f7a9cb 7968 if (expecting_tls_get_addr && htab->tls_get_addr_fd != NULL)
102890f0
AM
7969 {
7970 struct plt_entry *ent;
7971 for (ent = htab->tls_get_addr_fd->elf.plt.plist;
7972 ent != NULL;
7973 ent = ent->next)
7974 if (ent->addend == 0)
411e1bfb 7975 {
102890f0
AM
7976 if (ent->plt.refcount > 0)
7977 ent->plt.refcount -= 1;
7978 break;
411e1bfb 7979 }
102890f0 7980 }
411e1bfb 7981
102890f0 7982 if (tls_clear == 0)
30038c59
AM
7983 continue;
7984
102890f0
AM
7985 if ((tls_set & TLS_EXPLICIT) == 0)
7986 {
7987 struct got_entry *ent;
411e1bfb 7988
102890f0
AM
7989 /* Adjust got entry for this reloc. */
7990 if (h != NULL)
7991 ent = h->got.glist;
7992 else
7993 ent = elf_local_got_ents (ibfd)[r_symndx];
411e1bfb 7994
102890f0
AM
7995 for (; ent != NULL; ent = ent->next)
7996 if (ent->addend == rel->r_addend
7997 && ent->owner == ibfd
7998 && ent->tls_type == tls_type)
7999 break;
8000 if (ent == NULL)
8001 abort ();
411e1bfb 8002
102890f0
AM
8003 if (tls_set == 0)
8004 {
8005 /* We managed to get rid of a got entry. */
8006 if (ent->got.refcount > 0)
8007 ent->got.refcount -= 1;
8008 }
8009 }
8010 else
8011 {
8012 /* If we got rid of a DTPMOD/DTPREL reloc pair then
8013 we'll lose one or two dyn relocs. */
8014 if (!dec_dynrel_count (rel->r_info, sec, info,
8015 NULL, h, sym_sec))
8016 return FALSE;
411e1bfb 8017
102890f0
AM
8018 if (tls_set == (TLS_EXPLICIT | TLS_GD))
8019 {
8020 if (!dec_dynrel_count ((rel + 1)->r_info, sec, info,
8021 NULL, h, sym_sec))
8022 return FALSE;
8023 }
8024 }
411e1bfb 8025
102890f0
AM
8026 *tls_mask |= tls_set;
8027 *tls_mask &= ~tls_clear;
8028 }
8c1d1bb8 8029
102890f0
AM
8030 if (elf_section_data (sec)->relocs != relstart)
8031 free (relstart);
8032 }
411e1bfb 8033
663a1470
AM
8034 if (locsyms != NULL
8035 && (elf_symtab_hdr (ibfd).contents != (unsigned char *) locsyms))
8036 {
8037 if (!info->keep_memory)
8038 free (locsyms);
8039 else
8040 elf_symtab_hdr (ibfd).contents = (unsigned char *) locsyms;
8041 }
8042 }
411e1bfb 8043
663a1470
AM
8044 if (toc_ref != NULL)
8045 free (toc_ref);
b34976b6 8046 return TRUE;
1e2f5b6e 8047}
b34976b6 8048
c5614fa4
AM
8049/* Called via elf_link_hash_traverse from ppc64_elf_edit_toc to adjust
8050 the values of any global symbols in a toc section that has been
8051 edited. Globals in toc sections should be a rarity, so this function
8052 sets a flag if any are found in toc sections other than the one just
8053 edited, so that futher hash table traversals can be avoided. */
8054
8055struct adjust_toc_info
8056{
8057 asection *toc;
8058 unsigned long *skip;
8059 bfd_boolean global_toc_syms;
8060};
8061
ba761f19
AM
8062enum toc_skip_enum { ref_from_discarded = 1, can_optimize = 2 };
8063
c5614fa4
AM
8064static bfd_boolean
8065adjust_toc_syms (struct elf_link_hash_entry *h, void *inf)
8066{
8067 struct ppc_link_hash_entry *eh;
8068 struct adjust_toc_info *toc_inf = (struct adjust_toc_info *) inf;
854b41e7 8069 unsigned long i;
c5614fa4 8070
c5614fa4
AM
8071 if (h->root.type != bfd_link_hash_defined
8072 && h->root.type != bfd_link_hash_defweak)
8073 return TRUE;
8074
8075 eh = (struct ppc_link_hash_entry *) h;
8076 if (eh->adjust_done)
8077 return TRUE;
8078
8079 if (eh->elf.root.u.def.section == toc_inf->toc)
8080 {
854b41e7
AM
8081 if (eh->elf.root.u.def.value > toc_inf->toc->rawsize)
8082 i = toc_inf->toc->rawsize >> 3;
c5614fa4 8083 else
854b41e7
AM
8084 i = eh->elf.root.u.def.value >> 3;
8085
ba761f19 8086 if ((toc_inf->skip[i] & (ref_from_discarded | can_optimize)) != 0)
c5614fa4
AM
8087 {
8088 (*_bfd_error_handler)
854b41e7
AM
8089 (_("%s defined on removed toc entry"), eh->elf.root.root.string);
8090 do
8091 ++i;
ba761f19 8092 while ((toc_inf->skip[i] & (ref_from_discarded | can_optimize)) != 0);
854b41e7 8093 eh->elf.root.u.def.value = (bfd_vma) i << 3;
c5614fa4 8094 }
854b41e7
AM
8095
8096 eh->elf.root.u.def.value -= toc_inf->skip[i];
c5614fa4
AM
8097 eh->adjust_done = 1;
8098 }
8099 else if (strcmp (eh->elf.root.u.def.section->name, ".toc") == 0)
8100 toc_inf->global_toc_syms = TRUE;
8101
8102 return TRUE;
8103}
8104
560c8763
AM
8105/* Return TRUE iff INSN is one we expect on a _LO variety toc/got reloc. */
8106
8107static bfd_boolean
8108ok_lo_toc_insn (unsigned int insn)
8109{
8110 return ((insn & (0x3f << 26)) == 14u << 26 /* addi */
8111 || (insn & (0x3f << 26)) == 32u << 26 /* lwz */
8112 || (insn & (0x3f << 26)) == 34u << 26 /* lbz */
8113 || (insn & (0x3f << 26)) == 36u << 26 /* stw */
8114 || (insn & (0x3f << 26)) == 38u << 26 /* stb */
8115 || (insn & (0x3f << 26)) == 40u << 26 /* lhz */
8116 || (insn & (0x3f << 26)) == 42u << 26 /* lha */
8117 || (insn & (0x3f << 26)) == 44u << 26 /* sth */
8118 || (insn & (0x3f << 26)) == 46u << 26 /* lmw */
8119 || (insn & (0x3f << 26)) == 47u << 26 /* stmw */
8120 || (insn & (0x3f << 26)) == 48u << 26 /* lfs */
8121 || (insn & (0x3f << 26)) == 50u << 26 /* lfd */
8122 || (insn & (0x3f << 26)) == 52u << 26 /* stfs */
8123 || (insn & (0x3f << 26)) == 54u << 26 /* stfd */
8124 || ((insn & (0x3f << 26)) == 58u << 26 /* lwa,ld,lmd */
8125 && (insn & 3) != 1)
8126 || ((insn & (0x3f << 26)) == 62u << 26 /* std, stmd */
8127 && ((insn & 3) == 0 || (insn & 3) == 3))
8128 || (insn & (0x3f << 26)) == 12u << 26 /* addic */);
8129}
8130
c5614fa4
AM
8131/* Examine all relocs referencing .toc sections in order to remove
8132 unused .toc entries. */
8133
8134bfd_boolean
33c0ec9d 8135ppc64_elf_edit_toc (struct bfd_link_info *info)
c5614fa4
AM
8136{
8137 bfd *ibfd;
8138 struct adjust_toc_info toc_inf;
67f0cbdb 8139 struct ppc_link_hash_table *htab = ppc_hash_table (info);
c5614fa4 8140
67f0cbdb 8141 htab->do_toc_opt = 1;
c5614fa4
AM
8142 toc_inf.global_toc_syms = TRUE;
8143 for (ibfd = info->input_bfds; ibfd != NULL; ibfd = ibfd->link_next)
8144 {
8145 asection *toc, *sec;
8146 Elf_Internal_Shdr *symtab_hdr;
8147 Elf_Internal_Sym *local_syms;
425b145b 8148 Elf_Internal_Rela *relstart, *rel, *toc_relocs;
c5614fa4
AM
8149 unsigned long *skip, *drop;
8150 unsigned char *used;
8151 unsigned char *keep, last, some_unused;
8152
854b41e7
AM
8153 if (!is_ppc64_elf (ibfd))
8154 continue;
8155
c5614fa4
AM
8156 toc = bfd_get_section_by_name (ibfd, ".toc");
8157 if (toc == NULL
92b7a70f 8158 || toc->size == 0
dbaa2011
AM
8159 || toc->sec_info_type == SEC_INFO_TYPE_JUST_SYMS
8160 || discarded_section (toc))
c5614fa4
AM
8161 continue;
8162
425b145b 8163 toc_relocs = NULL;
c5614fa4 8164 local_syms = NULL;
0ffa91dd 8165 symtab_hdr = &elf_symtab_hdr (ibfd);
c5614fa4
AM
8166
8167 /* Look at sections dropped from the final link. */
8168 skip = NULL;
8169 relstart = NULL;
8170 for (sec = ibfd->sections; sec != NULL; sec = sec->next)
8171 {
8172 if (sec->reloc_count == 0
dbaa2011 8173 || !discarded_section (sec)
c5614fa4
AM
8174 || get_opd_info (sec)
8175 || (sec->flags & SEC_ALLOC) == 0
8176 || (sec->flags & SEC_DEBUGGING) != 0)
8177 continue;
8178
8179 relstart = _bfd_elf_link_read_relocs (ibfd, sec, NULL, NULL, FALSE);
8180 if (relstart == NULL)
8181 goto error_ret;
8182
8183 /* Run through the relocs to see which toc entries might be
8184 unused. */
8185 for (rel = relstart; rel < relstart + sec->reloc_count; ++rel)
8186 {
8187 enum elf_ppc64_reloc_type r_type;
8188 unsigned long r_symndx;
8189 asection *sym_sec;
8190 struct elf_link_hash_entry *h;
8191 Elf_Internal_Sym *sym;
8192 bfd_vma val;
8193
8194 r_type = ELF64_R_TYPE (rel->r_info);
8195 switch (r_type)
8196 {
8197 default:
8198 continue;
8199
8200 case R_PPC64_TOC16:
8201 case R_PPC64_TOC16_LO:
8202 case R_PPC64_TOC16_HI:
8203 case R_PPC64_TOC16_HA:
8204 case R_PPC64_TOC16_DS:
8205 case R_PPC64_TOC16_LO_DS:
8206 break;
8207 }
8208
8209 r_symndx = ELF64_R_SYM (rel->r_info);
8210 if (!get_sym_h (&h, &sym, &sym_sec, NULL, &local_syms,
8211 r_symndx, ibfd))
8212 goto error_ret;
8213
8214 if (sym_sec != toc)
8215 continue;
8216
8217 if (h != NULL)
8218 val = h->root.u.def.value;
8219 else
8220 val = sym->st_value;
8221 val += rel->r_addend;
8222
8223 if (val >= toc->size)
8224 continue;
8225
8226 /* Anything in the toc ought to be aligned to 8 bytes.
8227 If not, don't mark as unused. */
8228 if (val & 7)
8229 continue;
8230
8231 if (skip == NULL)
8232 {
854b41e7 8233 skip = bfd_zmalloc (sizeof (*skip) * (toc->size + 15) / 8);
c5614fa4
AM
8234 if (skip == NULL)
8235 goto error_ret;
8236 }
8237
ba761f19 8238 skip[val >> 3] = ref_from_discarded;
c5614fa4
AM
8239 }
8240
8241 if (elf_section_data (sec)->relocs != relstart)
8242 free (relstart);
8243 }
8244
ba761f19
AM
8245 /* For largetoc loads of address constants, we can convert
8246 . addis rx,2,addr@got@ha
8247 . ld ry,addr@got@l(rx)
8248 to
8249 . addis rx,2,addr@toc@ha
8250 . addi ry,rx,addr@toc@l
8251 when addr is within 2G of the toc pointer. This then means
8252 that the word storing "addr" in the toc is no longer needed. */
8253
8254 if (!ppc64_elf_tdata (ibfd)->has_small_toc_reloc
8255 && toc->output_section->rawsize < (bfd_vma) 1 << 31
8256 && toc->reloc_count != 0)
8257 {
8258 /* Read toc relocs. */
425b145b
AM
8259 toc_relocs = _bfd_elf_link_read_relocs (ibfd, toc, NULL, NULL,
8260 info->keep_memory);
8261 if (toc_relocs == NULL)
ba761f19
AM
8262 goto error_ret;
8263
425b145b 8264 for (rel = toc_relocs; rel < toc_relocs + toc->reloc_count; ++rel)
ba761f19
AM
8265 {
8266 enum elf_ppc64_reloc_type r_type;
8267 unsigned long r_symndx;
8268 asection *sym_sec;
8269 struct elf_link_hash_entry *h;
8270 Elf_Internal_Sym *sym;
8271 bfd_vma val, addr;
8272
8273 r_type = ELF64_R_TYPE (rel->r_info);
8274 if (r_type != R_PPC64_ADDR64)
8275 continue;
8276
8277 r_symndx = ELF64_R_SYM (rel->r_info);
8278 if (!get_sym_h (&h, &sym, &sym_sec, NULL, &local_syms,
8279 r_symndx, ibfd))
8280 goto error_ret;
8281
425b145b 8282 if (sym_sec == NULL
dbaa2011 8283 || discarded_section (sym_sec))
425b145b
AM
8284 continue;
8285
726d3ab0 8286 if (!SYMBOL_CALLS_LOCAL (info, h))
ba761f19
AM
8287 continue;
8288
8289 if (h != NULL)
bddc25c9
AM
8290 {
8291 if (h->type == STT_GNU_IFUNC)
8292 continue;
8293 val = h->root.u.def.value;
8294 }
ba761f19 8295 else
bddc25c9
AM
8296 {
8297 if (ELF_ST_TYPE (sym->st_info) == STT_GNU_IFUNC)
8298 continue;
8299 val = sym->st_value;
8300 }
ba761f19
AM
8301 val += rel->r_addend;
8302 val += sym_sec->output_section->vma + sym_sec->output_offset;
8303
8304 /* We don't yet know the exact toc pointer value, but we
8305 know it will be somewhere in the toc section. Don't
8306 optimize if the difference from any possible toc
8307 pointer is outside [ff..f80008000, 7fff7fff]. */
8308 addr = toc->output_section->vma + TOC_BASE_OFF;
8309 if (val - addr + (bfd_vma) 0x80008000 >= (bfd_vma) 1 << 32)
8310 continue;
8311
8312 addr = toc->output_section->vma + toc->output_section->rawsize;
8313 if (val - addr + (bfd_vma) 0x80008000 >= (bfd_vma) 1 << 32)
8314 continue;
8315
8316 if (skip == NULL)
8317 {
8318 skip = bfd_zmalloc (sizeof (*skip) * (toc->size + 15) / 8);
8319 if (skip == NULL)
8320 goto error_ret;
8321 }
8322
8323 skip[rel->r_offset >> 3]
425b145b 8324 |= can_optimize | ((rel - toc_relocs) << 2);
ba761f19 8325 }
ba761f19
AM
8326 }
8327
c5614fa4
AM
8328 if (skip == NULL)
8329 continue;
8330
8331 used = bfd_zmalloc (sizeof (*used) * (toc->size + 7) / 8);
8332 if (used == NULL)
8333 {
8334 error_ret:
8335 if (local_syms != NULL
8336 && symtab_hdr->contents != (unsigned char *) local_syms)
8337 free (local_syms);
8338 if (sec != NULL
8339 && relstart != NULL
8340 && elf_section_data (sec)->relocs != relstart)
8341 free (relstart);
425b145b
AM
8342 if (toc_relocs != NULL
8343 && elf_section_data (toc)->relocs != toc_relocs)
8344 free (toc_relocs);
c5614fa4
AM
8345 if (skip != NULL)
8346 free (skip);
8347 return FALSE;
8348 }
8349
30038c59
AM
8350 /* Now check all kept sections that might reference the toc.
8351 Check the toc itself last. */
8352 for (sec = (ibfd->sections == toc && toc->next ? toc->next
8353 : ibfd->sections);
c5614fa4 8354 sec != NULL;
c5614fa4 8355 sec = (sec == toc ? NULL
c5614fa4 8356 : sec->next == NULL ? toc
30038c59 8357 : sec->next == toc && toc->next ? toc->next
c5614fa4
AM
8358 : sec->next))
8359 {
8360 int repeat;
8361
8362 if (sec->reloc_count == 0
dbaa2011 8363 || discarded_section (sec)
c5614fa4
AM
8364 || get_opd_info (sec)
8365 || (sec->flags & SEC_ALLOC) == 0
8366 || (sec->flags & SEC_DEBUGGING) != 0)
8367 continue;
8368
854b41e7
AM
8369 relstart = _bfd_elf_link_read_relocs (ibfd, sec, NULL, NULL,
8370 info->keep_memory);
c5614fa4
AM
8371 if (relstart == NULL)
8372 goto error_ret;
8373
8374 /* Mark toc entries referenced as used. */
8375 repeat = 0;
8376 do
8377 for (rel = relstart; rel < relstart + sec->reloc_count; ++rel)
8378 {
8379 enum elf_ppc64_reloc_type r_type;
8380 unsigned long r_symndx;
8381 asection *sym_sec;
8382 struct elf_link_hash_entry *h;
8383 Elf_Internal_Sym *sym;
8384 bfd_vma val;
560c8763 8385 enum {no_check, check_lo, check_ha} insn_check;
c5614fa4
AM
8386
8387 r_type = ELF64_R_TYPE (rel->r_info);
98528052
AM
8388 switch (r_type)
8389 {
8390 default:
560c8763 8391 insn_check = no_check;
98528052
AM
8392 break;
8393
8394 case R_PPC64_GOT_TLSLD16_HA:
8395 case R_PPC64_GOT_TLSGD16_HA:
8396 case R_PPC64_GOT_TPREL16_HA:
8397 case R_PPC64_GOT_DTPREL16_HA:
8398 case R_PPC64_GOT16_HA:
8399 case R_PPC64_TOC16_HA:
560c8763
AM
8400 insn_check = check_ha;
8401 break;
98528052 8402
560c8763
AM
8403 case R_PPC64_GOT_TLSLD16_LO:
8404 case R_PPC64_GOT_TLSGD16_LO:
8405 case R_PPC64_GOT_TPREL16_LO_DS:
8406 case R_PPC64_GOT_DTPREL16_LO_DS:
8407 case R_PPC64_GOT16_LO:
8408 case R_PPC64_GOT16_LO_DS:
8409 case R_PPC64_TOC16_LO:
8410 case R_PPC64_TOC16_LO_DS:
8411 insn_check = check_lo;
98528052
AM
8412 break;
8413 }
8414
560c8763
AM
8415 if (insn_check != no_check)
8416 {
8417 bfd_vma off = rel->r_offset & ~3;
8418 unsigned char buf[4];
8419 unsigned int insn;
8420
8421 if (!bfd_get_section_contents (ibfd, sec, buf, off, 4))
8422 {
8423 free (used);
8424 goto error_ret;
8425 }
8426 insn = bfd_get_32 (ibfd, buf);
8427 if (insn_check == check_lo
8428 ? !ok_lo_toc_insn (insn)
8429 : ((insn & ((0x3f << 26) | 0x1f << 16))
8430 != ((15u << 26) | (2 << 16)) /* addis rt,2,imm */))
8431 {
8432 char str[12];
8433
8434 ppc64_elf_tdata (ibfd)->unexpected_toc_insn = 1;
8435 sprintf (str, "%#08x", insn);
8436 info->callbacks->einfo
8437 (_("%P: %H: toc optimization is not supported for"
8438 " %s instruction.\n"),
8439 ibfd, sec, rel->r_offset & ~3, str);
8440 }
8441 }
8442
c5614fa4
AM
8443 switch (r_type)
8444 {
8445 case R_PPC64_TOC16:
8446 case R_PPC64_TOC16_LO:
8447 case R_PPC64_TOC16_HI:
8448 case R_PPC64_TOC16_HA:
8449 case R_PPC64_TOC16_DS:
8450 case R_PPC64_TOC16_LO_DS:
8451 /* In case we're taking addresses of toc entries. */
8452 case R_PPC64_ADDR64:
8453 break;
8454
8455 default:
8456 continue;
8457 }
8458
8459 r_symndx = ELF64_R_SYM (rel->r_info);
8460 if (!get_sym_h (&h, &sym, &sym_sec, NULL, &local_syms,
8461 r_symndx, ibfd))
8462 {
8463 free (used);
8464 goto error_ret;
8465 }
8466
8467 if (sym_sec != toc)
8468 continue;
8469
8470 if (h != NULL)
8471 val = h->root.u.def.value;
8472 else
8473 val = sym->st_value;
8474 val += rel->r_addend;
8475
8476 if (val >= toc->size)
8477 continue;
8478
ba761f19
AM
8479 if ((skip[val >> 3] & can_optimize) != 0)
8480 {
8481 bfd_vma off;
8482 unsigned char opc;
8483
8484 switch (r_type)
8485 {
8486 case R_PPC64_TOC16_HA:
8487 break;
8488
8489 case R_PPC64_TOC16_LO_DS:
8490 off = rel->r_offset + (bfd_big_endian (ibfd) ? -2 : 3);
8491 if (!bfd_get_section_contents (ibfd, sec, &opc, off, 1))
98528052
AM
8492 {
8493 free (used);
8494 goto error_ret;
8495 }
ba761f19
AM
8496 if ((opc & (0x3f << 2)) == (58u << 2))
8497 break;
8498 /* Fall thru */
8499
8500 default:
8501 /* Wrong sort of reloc, or not a ld. We may
8502 as well clear ref_from_discarded too. */
8503 skip[val >> 3] = 0;
8504 }
8505 }
8506
c5614fa4
AM
8507 /* For the toc section, we only mark as used if
8508 this entry itself isn't unused. */
8509 if (sec == toc
8510 && !used[val >> 3]
8511 && (used[rel->r_offset >> 3]
ba761f19 8512 || !(skip[rel->r_offset >> 3] & ref_from_discarded)))
c5614fa4
AM
8513 /* Do all the relocs again, to catch reference
8514 chains. */
8515 repeat = 1;
8516
8517 used[val >> 3] = 1;
8518 }
8519 while (repeat);
854b41e7
AM
8520
8521 if (elf_section_data (sec)->relocs != relstart)
8522 free (relstart);
c5614fa4
AM
8523 }
8524
8525 /* Merge the used and skip arrays. Assume that TOC
8526 doublewords not appearing as either used or unused belong
8527 to to an entry more than one doubleword in size. */
8528 for (drop = skip, keep = used, last = 0, some_unused = 0;
8529 drop < skip + (toc->size + 7) / 8;
8530 ++drop, ++keep)
8531 {
8532 if (*keep)
8533 {
ba761f19
AM
8534 *drop &= ~ref_from_discarded;
8535 if ((*drop & can_optimize) != 0)
8536 some_unused = 1;
c5614fa4
AM
8537 last = 0;
8538 }
b140b010 8539 else if ((*drop & ref_from_discarded) != 0)
c5614fa4
AM
8540 {
8541 some_unused = 1;
ba761f19 8542 last = ref_from_discarded;
c5614fa4
AM
8543 }
8544 else
8545 *drop = last;
8546 }
8547
8548 free (used);
8549
8550 if (some_unused)
8551 {
8552 bfd_byte *contents, *src;
8553 unsigned long off;
d62b3684 8554 Elf_Internal_Sym *sym;
ba761f19 8555 bfd_boolean local_toc_syms = FALSE;
c5614fa4
AM
8556
8557 /* Shuffle the toc contents, and at the same time convert the
8558 skip array from booleans into offsets. */
8559 if (!bfd_malloc_and_get_section (ibfd, toc, &contents))
8560 goto error_ret;
8561
8562 elf_section_data (toc)->this_hdr.contents = contents;
8563
8564 for (src = contents, off = 0, drop = skip;
8565 src < contents + toc->size;
8566 src += 8, ++drop)
8567 {
ba761f19
AM
8568 if ((*drop & (can_optimize | ref_from_discarded)) != 0)
8569 off += 8;
c5614fa4
AM
8570 else if (off != 0)
8571 {
8572 *drop = off;
8573 memcpy (src - off, src, 8);
8574 }
8575 }
854b41e7 8576 *drop = off;
c5614fa4
AM
8577 toc->rawsize = toc->size;
8578 toc->size = src - contents - off;
8579
ba761f19
AM
8580 /* Adjust addends for relocs against the toc section sym,
8581 and optimize any accesses we can. */
c5614fa4
AM
8582 for (sec = ibfd->sections; sec != NULL; sec = sec->next)
8583 {
8584 if (sec->reloc_count == 0
dbaa2011 8585 || discarded_section (sec))
c5614fa4
AM
8586 continue;
8587
8588 relstart = _bfd_elf_link_read_relocs (ibfd, sec, NULL, NULL,
854b41e7 8589 info->keep_memory);
c5614fa4
AM
8590 if (relstart == NULL)
8591 goto error_ret;
8592
8593 for (rel = relstart; rel < relstart + sec->reloc_count; ++rel)
8594 {
8595 enum elf_ppc64_reloc_type r_type;
8596 unsigned long r_symndx;
8597 asection *sym_sec;
8598 struct elf_link_hash_entry *h;
854b41e7 8599 bfd_vma val;
c5614fa4
AM
8600
8601 r_type = ELF64_R_TYPE (rel->r_info);
8602 switch (r_type)
8603 {
8604 default:
8605 continue;
8606
8607 case R_PPC64_TOC16:
8608 case R_PPC64_TOC16_LO:
8609 case R_PPC64_TOC16_HI:
8610 case R_PPC64_TOC16_HA:
8611 case R_PPC64_TOC16_DS:
8612 case R_PPC64_TOC16_LO_DS:
8613 case R_PPC64_ADDR64:
8614 break;
8615 }
8616
8617 r_symndx = ELF64_R_SYM (rel->r_info);
8618 if (!get_sym_h (&h, &sym, &sym_sec, NULL, &local_syms,
8619 r_symndx, ibfd))
8620 goto error_ret;
8621
ba761f19 8622 if (sym_sec != toc)
c5614fa4
AM
8623 continue;
8624
ba761f19
AM
8625 if (h != NULL)
8626 val = h->root.u.def.value;
8627 else
8628 {
8629 val = sym->st_value;
8630 if (val != 0)
8631 local_toc_syms = TRUE;
8632 }
8633
8634 val += rel->r_addend;
854b41e7
AM
8635
8636 if (val > toc->rawsize)
8637 val = toc->rawsize;
ba761f19
AM
8638 else if ((skip[val >> 3] & ref_from_discarded) != 0)
8639 continue;
8640 else if ((skip[val >> 3] & can_optimize) != 0)
8641 {
8642 Elf_Internal_Rela *tocrel
425b145b 8643 = toc_relocs + (skip[val >> 3] >> 2);
ba761f19
AM
8644 unsigned long tsym = ELF64_R_SYM (tocrel->r_info);
8645
8646 switch (r_type)
8647 {
8648 case R_PPC64_TOC16_HA:
8649 rel->r_info = ELF64_R_INFO (tsym, R_PPC64_TOC16_HA);
8650 break;
8651
8652 case R_PPC64_TOC16_LO_DS:
8653 rel->r_info = ELF64_R_INFO (tsym, R_PPC64_LO_DS_OPT);
8654 break;
8655
8656 default:
28942f62
AM
8657 if (!ppc64_elf_howto_table[R_PPC64_ADDR32])
8658 ppc_howto_init ();
b140b010
AM
8659 info->callbacks->einfo
8660 (_("%P: %H: %s relocation references "
8661 "optimized away TOC entry\n"),
8662 ibfd, sec, rel->r_offset,
8663 ppc64_elf_howto_table[r_type]->name);
8664 bfd_set_error (bfd_error_bad_value);
8665 goto error_ret;
ba761f19
AM
8666 }
8667 rel->r_addend = tocrel->r_addend;
8668 elf_section_data (sec)->relocs = relstart;
8669 continue;
8670 }
8671
8672 if (h != NULL || sym->st_value != 0)
8673 continue;
854b41e7
AM
8674
8675 rel->r_addend -= skip[val >> 3];
8676 elf_section_data (sec)->relocs = relstart;
c5614fa4 8677 }
854b41e7
AM
8678
8679 if (elf_section_data (sec)->relocs != relstart)
8680 free (relstart);
c5614fa4
AM
8681 }
8682
8683 /* We shouldn't have local or global symbols defined in the TOC,
8684 but handle them anyway. */
df22d223
AM
8685 if (local_syms != NULL)
8686 for (sym = local_syms;
8687 sym < local_syms + symtab_hdr->sh_info;
8688 ++sym)
8689 if (sym->st_value != 0
8690 && bfd_section_from_elf_index (ibfd, sym->st_shndx) == toc)
8691 {
8692 unsigned long i;
854b41e7 8693
df22d223
AM
8694 if (sym->st_value > toc->rawsize)
8695 i = toc->rawsize >> 3;
8696 else
8697 i = sym->st_value >> 3;
854b41e7 8698
df22d223
AM
8699 if ((skip[i] & (ref_from_discarded | can_optimize)) != 0)
8700 {
8701 if (local_toc_syms)
8702 (*_bfd_error_handler)
8703 (_("%s defined on removed toc entry"),
8704 bfd_elf_sym_name (ibfd, symtab_hdr, sym, NULL));
8705 do
8706 ++i;
8707 while ((skip[i] & (ref_from_discarded | can_optimize)));
8708 sym->st_value = (bfd_vma) i << 3;
8709 }
d62b3684 8710
df22d223
AM
8711 sym->st_value -= skip[i];
8712 symtab_hdr->contents = (unsigned char *) local_syms;
8713 }
c5614fa4 8714
854b41e7 8715 /* Adjust any global syms defined in this toc input section. */
c5614fa4
AM
8716 if (toc_inf.global_toc_syms)
8717 {
8718 toc_inf.toc = toc;
8719 toc_inf.skip = skip;
8720 toc_inf.global_toc_syms = FALSE;
8721 elf_link_hash_traverse (elf_hash_table (info), adjust_toc_syms,
8722 &toc_inf);
8723 }
854b41e7
AM
8724
8725 if (toc->reloc_count != 0)
8726 {
d4730f92 8727 Elf_Internal_Shdr *rel_hdr;
854b41e7
AM
8728 Elf_Internal_Rela *wrel;
8729 bfd_size_type sz;
8730
854b41e7 8731 /* Remove unused toc relocs, and adjust those we keep. */
28be611c
AM
8732 if (toc_relocs == NULL)
8733 toc_relocs = _bfd_elf_link_read_relocs (ibfd, toc, NULL, NULL,
8734 info->keep_memory);
8735 if (toc_relocs == NULL)
8736 goto error_ret;
8737
425b145b
AM
8738 wrel = toc_relocs;
8739 for (rel = toc_relocs; rel < toc_relocs + toc->reloc_count; ++rel)
ba761f19
AM
8740 if ((skip[rel->r_offset >> 3]
8741 & (ref_from_discarded | can_optimize)) == 0)
854b41e7
AM
8742 {
8743 wrel->r_offset = rel->r_offset - skip[rel->r_offset >> 3];
8744 wrel->r_info = rel->r_info;
8745 wrel->r_addend = rel->r_addend;
8746 ++wrel;
8747 }
8748 else if (!dec_dynrel_count (rel->r_info, toc, info,
8749 &local_syms, NULL, NULL))
8750 goto error_ret;
8751
425b145b
AM
8752 elf_section_data (toc)->relocs = toc_relocs;
8753 toc->reloc_count = wrel - toc_relocs;
d4730f92
BS
8754 rel_hdr = _bfd_elf_single_rel_hdr (toc);
8755 sz = rel_hdr->sh_entsize;
8756 rel_hdr->sh_size = toc->reloc_count * sz;
854b41e7 8757 }
c5614fa4 8758 }
28be611c
AM
8759 else if (toc_relocs != NULL
8760 && elf_section_data (toc)->relocs != toc_relocs)
425b145b 8761 free (toc_relocs);
c5614fa4
AM
8762
8763 if (local_syms != NULL
8764 && symtab_hdr->contents != (unsigned char *) local_syms)
8765 {
8766 if (!info->keep_memory)
8767 free (local_syms);
8768 else
8769 symtab_hdr->contents = (unsigned char *) local_syms;
8770 }
8771 free (skip);
8772 }
8773
8774 return TRUE;
8775}
8776
1bbe0902
AM
8777/* Return true iff input section I references the TOC using
8778 instructions limited to +/-32k offsets. */
8779
8780bfd_boolean
8781ppc64_elf_has_small_toc_reloc (asection *i)
8782{
8783 return (is_ppc64_elf (i->owner)
8784 && ppc64_elf_tdata (i->owner)->has_small_toc_reloc);
8785}
8786
927be08e
AM
8787/* Allocate space for one GOT entry. */
8788
8789static void
8790allocate_got (struct elf_link_hash_entry *h,
8791 struct bfd_link_info *info,
8792 struct got_entry *gent)
8793{
8794 struct ppc_link_hash_table *htab = ppc_hash_table (info);
8795 bfd_boolean dyn;
8796 struct ppc_link_hash_entry *eh = (struct ppc_link_hash_entry *) h;
8797 int entsize = (gent->tls_type & eh->tls_mask & (TLS_GD | TLS_LD)
8798 ? 16 : 8);
8799 int rentsize = (gent->tls_type & eh->tls_mask & TLS_GD
8800 ? 2 : 1) * sizeof (Elf64_External_Rela);
8801 asection *got = ppc64_elf_tdata (gent->owner)->got;
8802
8803 gent->got.offset = got->size;
8804 got->size += entsize;
8805
8806 dyn = htab->elf.dynamic_sections_created;
8807 if ((info->shared
8808 || WILL_CALL_FINISH_DYNAMIC_SYMBOL (dyn, 0, h))
8809 && (ELF_ST_VISIBILITY (h->other) == STV_DEFAULT
8810 || h->root.type != bfd_link_hash_undefweak))
8811 {
8812 asection *relgot = ppc64_elf_tdata (gent->owner)->relgot;
8813 relgot->size += rentsize;
8814 }
8815 else if (h->type == STT_GNU_IFUNC)
8816 {
8817 asection *relgot = htab->reliplt;
8818 relgot->size += rentsize;
8819 htab->got_reli_size += rentsize;
8820 }
8821}
8822
7865406b
AM
8823/* This function merges got entries in the same toc group. */
8824
8825static void
8826merge_got_entries (struct got_entry **pent)
8827{
8828 struct got_entry *ent, *ent2;
8829
8830 for (ent = *pent; ent != NULL; ent = ent->next)
8831 if (!ent->is_indirect)
8832 for (ent2 = ent->next; ent2 != NULL; ent2 = ent2->next)
8833 if (!ent2->is_indirect
8834 && ent2->addend == ent->addend
8835 && ent2->tls_type == ent->tls_type
8836 && elf_gp (ent2->owner) == elf_gp (ent->owner))
8837 {
8838 ent2->is_indirect = TRUE;
8839 ent2->got.ent = ent;
8840 }
8841}
8842
65f38f15
AM
8843/* Allocate space in .plt, .got and associated reloc sections for
8844 dynamic relocs. */
5bd4f169 8845
b34976b6 8846static bfd_boolean
4ce794b7 8847allocate_dynrelocs (struct elf_link_hash_entry *h, void *inf)
5bd4f169 8848{
65f38f15
AM
8849 struct bfd_link_info *info;
8850 struct ppc_link_hash_table *htab;
5bd4f169 8851 asection *s;
65f38f15 8852 struct ppc_link_hash_entry *eh;
6061a67d 8853 struct elf_dyn_relocs *p;
0b8bcf0d 8854 struct got_entry **pgent, *gent;
5bd4f169 8855
e92d460e 8856 if (h->root.type == bfd_link_hash_indirect)
b34976b6 8857 return TRUE;
5bd4f169 8858
65f38f15
AM
8859 info = (struct bfd_link_info *) inf;
8860 htab = ppc_hash_table (info);
4dfe6ac6
NC
8861 if (htab == NULL)
8862 return FALSE;
5bd4f169 8863
e054468f
AM
8864 if ((htab->elf.dynamic_sections_created
8865 && h->dynindx != -1
8866 && WILL_CALL_FINISH_DYNAMIC_SYMBOL (1, info->shared, h))
8867 || h->type == STT_GNU_IFUNC)
5bd4f169 8868 {
411e1bfb
AM
8869 struct plt_entry *pent;
8870 bfd_boolean doneone = FALSE;
8871 for (pent = h->plt.plist; pent != NULL; pent = pent->next)
8872 if (pent->plt.refcount > 0)
8873 {
25f23106
AM
8874 if (!htab->elf.dynamic_sections_created
8875 || h->dynindx == -1)
e054468f
AM
8876 {
8877 s = htab->iplt;
8878 pent->plt.offset = s->size;
8879 s->size += PLT_ENTRY_SIZE;
8880 s = htab->reliplt;
8881 }
8882 else
8883 {
8884 /* If this is the first .plt entry, make room for the special
8885 first entry. */
8886 s = htab->plt;
8887 if (s->size == 0)
8888 s->size += PLT_INITIAL_ENTRY_SIZE;
8889
8890 pent->plt.offset = s->size;
8891
8892 /* Make room for this entry. */
8893 s->size += PLT_ENTRY_SIZE;
8894
8895 /* Make room for the .glink code. */
8896 s = htab->glink;
8897 if (s->size == 0)
8898 s->size += GLINK_CALL_STUB_SIZE;
8899 /* We need bigger stubs past index 32767. */
8900 if (s->size >= GLINK_CALL_STUB_SIZE + 32768*2*4)
8901 s->size += 4;
8902 s->size += 2*4;
8903
8904 /* We also need to make an entry in the .rela.plt section. */
8905 s = htab->relplt;
8906 }
eea6121a 8907 s->size += sizeof (Elf64_External_Rela);
411e1bfb
AM
8908 doneone = TRUE;
8909 }
8910 else
8911 pent->plt.offset = (bfd_vma) -1;
8912 if (!doneone)
65f38f15 8913 {
411e1bfb 8914 h->plt.plist = NULL;
f5385ebf 8915 h->needs_plt = 0;
65f38f15
AM
8916 }
8917 }
8918 else
8919 {
411e1bfb 8920 h->plt.plist = NULL;
f5385ebf 8921 h->needs_plt = 0;
65f38f15
AM
8922 }
8923
951fd09b
AM
8924 eh = (struct ppc_link_hash_entry *) h;
8925 /* Run through the TLS GD got entries first if we're changing them
8926 to TPREL. */
e7b938ca 8927 if ((eh->tls_mask & TLS_TPRELGD) != 0)
951fd09b
AM
8928 for (gent = h->got.glist; gent != NULL; gent = gent->next)
8929 if (gent->got.refcount > 0
8930 && (gent->tls_type & TLS_GD) != 0)
8931 {
8932 /* This was a GD entry that has been converted to TPREL. If
8933 there happens to be a TPREL entry we can use that one. */
8934 struct got_entry *ent;
8935 for (ent = h->got.glist; ent != NULL; ent = ent->next)
8936 if (ent->got.refcount > 0
8937 && (ent->tls_type & TLS_TPREL) != 0
e717da7e
AM
8938 && ent->addend == gent->addend
8939 && ent->owner == gent->owner)
951fd09b
AM
8940 {
8941 gent->got.refcount = 0;
8942 break;
8943 }
8944
8945 /* If not, then we'll be using our own TPREL entry. */
8946 if (gent->got.refcount != 0)
8947 gent->tls_type = TLS_TLS | TLS_TPREL;
8948 }
8949
7865406b
AM
8950 /* Remove any list entry that won't generate a word in the GOT before
8951 we call merge_got_entries. Otherwise we risk merging to empty
8952 entries. */
0b8bcf0d
AM
8953 pgent = &h->got.glist;
8954 while ((gent = *pgent) != NULL)
411e1bfb 8955 if (gent->got.refcount > 0)
7865406b
AM
8956 {
8957 if ((gent->tls_type & TLS_LD) != 0
8958 && !h->def_dynamic)
8959 {
8960 ppc64_tlsld_got (gent->owner)->got.refcount += 1;
8961 *pgent = gent->next;
8962 }
8963 else
8964 pgent = &gent->next;
8965 }
8966 else
8967 *pgent = gent->next;
8968
8969 if (!htab->do_multi_toc)
8970 merge_got_entries (&h->got.glist);
8971
8972 for (gent = h->got.glist; gent != NULL; gent = gent->next)
8973 if (!gent->is_indirect)
411e1bfb
AM
8974 {
8975 /* Make sure this symbol is output as a dynamic symbol.
951fd09b
AM
8976 Undefined weak syms won't yet be marked as dynamic,
8977 nor will all TLS symbols. */
411e1bfb 8978 if (h->dynindx == -1
b099ab9f 8979 && !h->forced_local
25f23106 8980 && h->type != STT_GNU_IFUNC
b099ab9f 8981 && htab->elf.dynamic_sections_created)
411e1bfb 8982 {
c152c796 8983 if (! bfd_elf_link_record_dynamic_symbol (info, h))
411e1bfb
AM
8984 return FALSE;
8985 }
65f38f15 8986
0c8d6e5c 8987 if (!is_ppc64_elf (gent->owner))
927be08e 8988 abort ();
0ffa91dd 8989
927be08e 8990 allocate_got (h, info, gent);
411e1bfb 8991 }
65f38f15 8992
b099ab9f 8993 if (eh->dyn_relocs == NULL
25f23106
AM
8994 || (!htab->elf.dynamic_sections_created
8995 && h->type != STT_GNU_IFUNC))
b34976b6 8996 return TRUE;
65f38f15
AM
8997
8998 /* In the shared -Bsymbolic case, discard space allocated for
8999 dynamic pc-relative relocs against symbols which turn out to be
9000 defined in regular objects. For the normal shared case, discard
9001 space for relocs that have become local due to symbol visibility
9002 changes. */
9003
9004 if (info->shared)
9005 {
9c7a29a3 9006 /* Relocs that use pc_count are those that appear on a call insn,
1d483afe 9007 or certain REL relocs (see must_be_dyn_reloc) that can be
9c7a29a3
AM
9008 generated via assembly. We want calls to protected symbols to
9009 resolve directly to the function rather than going via the plt.
9010 If people want function pointer comparisons to work as expected
9011 then they should avoid writing weird assembly. */
09695f56 9012 if (SYMBOL_CALLS_LOCAL (info, h))
65f38f15 9013 {
6061a67d 9014 struct elf_dyn_relocs **pp;
65f38f15
AM
9015
9016 for (pp = &eh->dyn_relocs; (p = *pp) != NULL; )
5bd4f169 9017 {
65f38f15
AM
9018 p->count -= p->pc_count;
9019 p->pc_count = 0;
9020 if (p->count == 0)
9021 *pp = p->next;
9022 else
9023 pp = &p->next;
5bd4f169 9024 }
65f38f15 9025 }
4e795f50
AM
9026
9027 /* Also discard relocs on undefined weak syms with non-default
9028 visibility. */
cab87ef9
AM
9029 if (eh->dyn_relocs != NULL
9030 && h->root.type == bfd_link_hash_undefweak)
dfbb6ac9
AM
9031 {
9032 if (ELF_ST_VISIBILITY (h->other) != STV_DEFAULT)
9033 eh->dyn_relocs = NULL;
9034
9035 /* Make sure this symbol is output as a dynamic symbol.
9036 Undefined weak syms won't yet be marked as dynamic. */
9037 else if (h->dynindx == -1
9038 && !h->forced_local)
9039 {
9040 if (! bfd_elf_link_record_dynamic_symbol (info, h))
9041 return FALSE;
9042 }
9043 }
65f38f15 9044 }
25f23106
AM
9045 else if (h->type == STT_GNU_IFUNC)
9046 {
9047 if (!h->non_got_ref)
9048 eh->dyn_relocs = NULL;
9049 }
f4656909 9050 else if (ELIMINATE_COPY_RELOCS)
65f38f15
AM
9051 {
9052 /* For the non-shared case, discard space for relocs against
9053 symbols which turn out to need copy relocs or are not
9054 dynamic. */
9055
f5385ebf 9056 if (!h->non_got_ref
f5385ebf 9057 && !h->def_regular)
65f38f15
AM
9058 {
9059 /* Make sure this symbol is output as a dynamic symbol.
9060 Undefined weak syms won't yet be marked as dynamic. */
9061 if (h->dynindx == -1
f5385ebf 9062 && !h->forced_local)
65f38f15 9063 {
c152c796 9064 if (! bfd_elf_link_record_dynamic_symbol (info, h))
b34976b6 9065 return FALSE;
65f38f15
AM
9066 }
9067
9068 /* If that succeeded, we know we'll be keeping all the
9069 relocs. */
9070 if (h->dynindx != -1)
9071 goto keep;
9072 }
9073
9074 eh->dyn_relocs = NULL;
9075
ec338859 9076 keep: ;
65f38f15
AM
9077 }
9078
9079 /* Finally, allocate space. */
9080 for (p = eh->dyn_relocs; p != NULL; p = p->next)
9081 {
9082 asection *sreloc = elf_section_data (p->sec)->sreloc;
25f23106
AM
9083 if (!htab->elf.dynamic_sections_created)
9084 sreloc = htab->reliplt;
eea6121a 9085 sreloc->size += p->count * sizeof (Elf64_External_Rela);
65f38f15
AM
9086 }
9087
b34976b6 9088 return TRUE;
65f38f15
AM
9089}
9090
9091/* Find any dynamic relocs that apply to read-only sections. */
9092
b34976b6 9093static bfd_boolean
4ce794b7 9094readonly_dynrelocs (struct elf_link_hash_entry *h, void *inf)
65f38f15
AM
9095{
9096 struct ppc_link_hash_entry *eh;
6061a67d 9097 struct elf_dyn_relocs *p;
65f38f15
AM
9098
9099 eh = (struct ppc_link_hash_entry *) h;
9100 for (p = eh->dyn_relocs; p != NULL; p = p->next)
9101 {
9102 asection *s = p->sec->output_section;
9103
9104 if (s != NULL && (s->flags & SEC_READONLY) != 0)
9105 {
4ce794b7 9106 struct bfd_link_info *info = inf;
65f38f15
AM
9107
9108 info->flags |= DF_TEXTREL;
9109
9110 /* Not an error, just cut short the traversal. */
b34976b6 9111 return FALSE;
65f38f15
AM
9112 }
9113 }
b34976b6 9114 return TRUE;
65f38f15
AM
9115}
9116
9117/* Set the sizes of the dynamic sections. */
9118
b34976b6 9119static bfd_boolean
4ce794b7
AM
9120ppc64_elf_size_dynamic_sections (bfd *output_bfd ATTRIBUTE_UNUSED,
9121 struct bfd_link_info *info)
65f38f15
AM
9122{
9123 struct ppc_link_hash_table *htab;
9124 bfd *dynobj;
9125 asection *s;
b34976b6 9126 bfd_boolean relocs;
65f38f15 9127 bfd *ibfd;
7865406b 9128 struct got_entry *first_tlsld;
65f38f15
AM
9129
9130 htab = ppc_hash_table (info);
4dfe6ac6
NC
9131 if (htab == NULL)
9132 return FALSE;
9133
65f38f15
AM
9134 dynobj = htab->elf.dynobj;
9135 if (dynobj == NULL)
9136 abort ();
9137
9138 if (htab->elf.dynamic_sections_created)
9139 {
9140 /* Set the contents of the .interp section to the interpreter. */
36af4a4e 9141 if (info->executable)
65f38f15
AM
9142 {
9143 s = bfd_get_section_by_name (dynobj, ".interp");
9144 if (s == NULL)
9145 abort ();
eea6121a 9146 s->size = sizeof ELF_DYNAMIC_INTERPRETER;
65f38f15
AM
9147 s->contents = (unsigned char *) ELF_DYNAMIC_INTERPRETER;
9148 }
9149 }
9150
9151 /* Set up .got offsets for local syms, and space for local dynamic
9152 relocs. */
9153 for (ibfd = info->input_bfds; ibfd != NULL; ibfd = ibfd->link_next)
9154 {
411e1bfb
AM
9155 struct got_entry **lgot_ents;
9156 struct got_entry **end_lgot_ents;
e054468f
AM
9157 struct plt_entry **local_plt;
9158 struct plt_entry **end_local_plt;
f961d9dd 9159 unsigned char *lgot_masks;
65f38f15
AM
9160 bfd_size_type locsymcount;
9161 Elf_Internal_Shdr *symtab_hdr;
9162 asection *srel;
9163
0c8d6e5c 9164 if (!is_ppc64_elf (ibfd))
65f38f15
AM
9165 continue;
9166
9167 for (s = ibfd->sections; s != NULL; s = s->next)
9168 {
6061a67d 9169 struct elf_dyn_relocs *p;
65f38f15 9170
6edfbbad 9171 for (p = elf_section_data (s)->local_dynrel; p != NULL; p = p->next)
65f38f15 9172 {
ec338859
AM
9173 if (!bfd_is_abs_section (p->sec)
9174 && bfd_is_abs_section (p->sec->output_section))
9175 {
9176 /* Input section has been discarded, either because
9177 it is a copy of a linkonce section or due to
9178 linker script /DISCARD/, so we'll be discarding
9179 the relocs too. */
9180 }
248866a8 9181 else if (p->count != 0)
ec338859
AM
9182 {
9183 srel = elf_section_data (p->sec)->sreloc;
25f23106
AM
9184 if (!htab->elf.dynamic_sections_created)
9185 srel = htab->reliplt;
eea6121a 9186 srel->size += p->count * sizeof (Elf64_External_Rela);
248866a8
AM
9187 if ((p->sec->output_section->flags & SEC_READONLY) != 0)
9188 info->flags |= DF_TEXTREL;
ec338859 9189 }
65f38f15
AM
9190 }
9191 }
9192
411e1bfb
AM
9193 lgot_ents = elf_local_got_ents (ibfd);
9194 if (!lgot_ents)
65f38f15
AM
9195 continue;
9196
0ffa91dd 9197 symtab_hdr = &elf_symtab_hdr (ibfd);
65f38f15 9198 locsymcount = symtab_hdr->sh_info;
411e1bfb 9199 end_lgot_ents = lgot_ents + locsymcount;
e054468f
AM
9200 local_plt = (struct plt_entry **) end_lgot_ents;
9201 end_local_plt = local_plt + locsymcount;
f961d9dd 9202 lgot_masks = (unsigned char *) end_local_plt;
e717da7e
AM
9203 s = ppc64_elf_tdata (ibfd)->got;
9204 srel = ppc64_elf_tdata (ibfd)->relgot;
e7b938ca 9205 for (; lgot_ents < end_lgot_ents; ++lgot_ents, ++lgot_masks)
65f38f15 9206 {
0b8bcf0d 9207 struct got_entry **pent, *ent;
411e1bfb 9208
0b8bcf0d
AM
9209 pent = lgot_ents;
9210 while ((ent = *pent) != NULL)
411e1bfb
AM
9211 if (ent->got.refcount > 0)
9212 {
e7b938ca 9213 if ((ent->tls_type & *lgot_masks & TLS_LD) != 0)
411e1bfb 9214 {
927be08e 9215 ppc64_tlsld_got (ibfd)->got.refcount += 1;
0b8bcf0d 9216 *pent = ent->next;
411e1bfb
AM
9217 }
9218 else
9219 {
25f23106 9220 unsigned int num = 1;
eea6121a 9221 ent->got.offset = s->size;
e7b938ca 9222 if ((ent->tls_type & *lgot_masks & TLS_GD) != 0)
25f23106
AM
9223 num = 2;
9224 s->size += num * 8;
9225 if (info->shared)
9226 srel->size += num * sizeof (Elf64_External_Rela);
9227 else if ((*lgot_masks & PLT_IFUNC) != 0)
927be08e
AM
9228 {
9229 htab->reliplt->size
9230 += num * sizeof (Elf64_External_Rela);
9231 htab->got_reli_size
9232 += num * sizeof (Elf64_External_Rela);
9233 }
0b8bcf0d 9234 pent = &ent->next;
411e1bfb
AM
9235 }
9236 }
9237 else
0b8bcf0d 9238 *pent = ent->next;
65f38f15 9239 }
e054468f
AM
9240
9241 /* Allocate space for calls to local STT_GNU_IFUNC syms in .iplt. */
9242 for (; local_plt < end_local_plt; ++local_plt)
9243 {
9244 struct plt_entry *ent;
9245
9246 for (ent = *local_plt; ent != NULL; ent = ent->next)
9247 if (ent->plt.refcount > 0)
9248 {
91d6fa6a 9249 s = htab->iplt;
e054468f
AM
9250 ent->plt.offset = s->size;
9251 s->size += PLT_ENTRY_SIZE;
9252
25f23106 9253 htab->reliplt->size += sizeof (Elf64_External_Rela);
e054468f
AM
9254 }
9255 else
9256 ent->plt.offset = (bfd_vma) -1;
9257 }
65f38f15
AM
9258 }
9259
9260 /* Allocate global sym .plt and .got entries, and space for global
9261 sym dynamic relocs. */
4ce794b7 9262 elf_link_hash_traverse (&htab->elf, allocate_dynrelocs, info);
65f38f15 9263
7865406b 9264 first_tlsld = NULL;
102890f0
AM
9265 for (ibfd = info->input_bfds; ibfd != NULL; ibfd = ibfd->link_next)
9266 {
7865406b
AM
9267 struct got_entry *ent;
9268
0c8d6e5c 9269 if (!is_ppc64_elf (ibfd))
102890f0
AM
9270 continue;
9271
7865406b
AM
9272 ent = ppc64_tlsld_got (ibfd);
9273 if (ent->got.refcount > 0)
102890f0 9274 {
7865406b 9275 if (!htab->do_multi_toc && first_tlsld != NULL)
102890f0 9276 {
7865406b
AM
9277 ent->is_indirect = TRUE;
9278 ent->got.ent = first_tlsld;
9279 }
9280 else
9281 {
9282 if (first_tlsld == NULL)
9283 first_tlsld = ent;
9284 s = ppc64_elf_tdata (ibfd)->got;
9285 ent->got.offset = s->size;
9286 ent->owner = ibfd;
9287 s->size += 16;
9288 if (info->shared)
9289 {
9290 asection *srel = ppc64_elf_tdata (ibfd)->relgot;
9291 srel->size += sizeof (Elf64_External_Rela);
9292 }
102890f0
AM
9293 }
9294 }
9295 else
7865406b 9296 ent->got.offset = (bfd_vma) -1;
102890f0
AM
9297 }
9298
65f38f15
AM
9299 /* We now have determined the sizes of the various dynamic sections.
9300 Allocate memory for them. */
b34976b6 9301 relocs = FALSE;
65f38f15
AM
9302 for (s = dynobj->sections; s != NULL; s = s->next)
9303 {
9304 if ((s->flags & SEC_LINKER_CREATED) == 0)
9305 continue;
9306
4ce794b7 9307 if (s == htab->brlt || s == htab->relbrlt)
721956f4
AM
9308 /* These haven't been allocated yet; don't strip. */
9309 continue;
e717da7e
AM
9310 else if (s == htab->got
9311 || s == htab->plt
e054468f 9312 || s == htab->iplt
c456f082
AM
9313 || s == htab->glink
9314 || s == htab->dynbss)
65f38f15
AM
9315 {
9316 /* Strip this section if we don't need it; see the
9317 comment below. */
5bd4f169 9318 }
58d180e8
AM
9319 else if (s == htab->glink_eh_frame)
9320 {
9321 if (!bfd_is_abs_section (s->output_section))
9322 /* Not sized yet. */
9323 continue;
9324 }
70cc837d 9325 else if (CONST_STRNEQ (s->name, ".rela"))
5bd4f169 9326 {
c456f082 9327 if (s->size != 0)
5bd4f169 9328 {
4ce794b7 9329 if (s != htab->relplt)
b34976b6 9330 relocs = TRUE;
5bd4f169
AM
9331
9332 /* We use the reloc_count field as a counter if we need
9333 to copy relocs into the output file. */
9334 s->reloc_count = 0;
9335 }
9336 }
65f38f15 9337 else
5bd4f169
AM
9338 {
9339 /* It's not one of our sections, so don't allocate space. */
9340 continue;
9341 }
9342
eea6121a 9343 if (s->size == 0)
5bd4f169 9344 {
c456f082
AM
9345 /* If we don't need this section, strip it from the
9346 output file. This is mostly to handle .rela.bss and
9347 .rela.plt. We must create both sections in
9348 create_dynamic_sections, because they must be created
9349 before the linker maps input sections to output
9350 sections. The linker does that before
9351 adjust_dynamic_symbol is called, and it is that
9352 function which decides whether anything needs to go
9353 into these sections. */
8423293d 9354 s->flags |= SEC_EXCLUDE;
5bd4f169
AM
9355 continue;
9356 }
9357
c456f082 9358 if ((s->flags & SEC_HAS_CONTENTS) == 0)
5f333394
AM
9359 continue;
9360
65f38f15
AM
9361 /* Allocate memory for the section contents. We use bfd_zalloc
9362 here in case unused entries are not reclaimed before the
9363 section's contents are written out. This should not happen,
411e1bfb
AM
9364 but this way if it does we get a R_PPC64_NONE reloc in .rela
9365 sections instead of garbage.
9366 We also rely on the section contents being zero when writing
9367 the GOT. */
eea6121a 9368 s->contents = bfd_zalloc (dynobj, s->size);
65f38f15 9369 if (s->contents == NULL)
b34976b6 9370 return FALSE;
5bd4f169
AM
9371 }
9372
e717da7e
AM
9373 for (ibfd = info->input_bfds; ibfd != NULL; ibfd = ibfd->link_next)
9374 {
0c8d6e5c 9375 if (!is_ppc64_elf (ibfd))
7b53ace3
AM
9376 continue;
9377
e717da7e
AM
9378 s = ppc64_elf_tdata (ibfd)->got;
9379 if (s != NULL && s != htab->got)
9380 {
eea6121a 9381 if (s->size == 0)
8423293d 9382 s->flags |= SEC_EXCLUDE;
e717da7e
AM
9383 else
9384 {
eea6121a 9385 s->contents = bfd_zalloc (ibfd, s->size);
e717da7e
AM
9386 if (s->contents == NULL)
9387 return FALSE;
9388 }
9389 }
9390 s = ppc64_elf_tdata (ibfd)->relgot;
9391 if (s != NULL)
9392 {
eea6121a 9393 if (s->size == 0)
8423293d 9394 s->flags |= SEC_EXCLUDE;
e717da7e
AM
9395 else
9396 {
eea6121a 9397 s->contents = bfd_zalloc (ibfd, s->size);
e717da7e
AM
9398 if (s->contents == NULL)
9399 return FALSE;
9400 relocs = TRUE;
9401 s->reloc_count = 0;
9402 }
9403 }
9404 }
9405
e86ce104 9406 if (htab->elf.dynamic_sections_created)
5bd4f169
AM
9407 {
9408 /* Add some entries to the .dynamic section. We fill in the
9409 values later, in ppc64_elf_finish_dynamic_sections, but we
9410 must add the entries now so that we get the correct size for
9411 the .dynamic section. The DT_DEBUG entry is filled in by the
9412 dynamic linker and used by the debugger. */
dc810e39 9413#define add_dynamic_entry(TAG, VAL) \
5a580b3a 9414 _bfd_elf_add_dynamic_entry (info, TAG, VAL)
dc810e39 9415
36af4a4e 9416 if (info->executable)
5bd4f169 9417 {
dc810e39 9418 if (!add_dynamic_entry (DT_DEBUG, 0))
b34976b6 9419 return FALSE;
5bd4f169
AM
9420 }
9421
eea6121a 9422 if (htab->plt != NULL && htab->plt->size != 0)
5bd4f169 9423 {
dc810e39
AM
9424 if (!add_dynamic_entry (DT_PLTGOT, 0)
9425 || !add_dynamic_entry (DT_PLTRELSZ, 0)
9426 || !add_dynamic_entry (DT_PLTREL, DT_RELA)
5d1634d7
AM
9427 || !add_dynamic_entry (DT_JMPREL, 0)
9428 || !add_dynamic_entry (DT_PPC64_GLINK, 0))
b34976b6 9429 return FALSE;
5bd4f169
AM
9430 }
9431
19397422
AM
9432 if (NO_OPD_RELOCS)
9433 {
9434 if (!add_dynamic_entry (DT_PPC64_OPD, 0)
9435 || !add_dynamic_entry (DT_PPC64_OPDSZ, 0))
b34976b6 9436 return FALSE;
19397422
AM
9437 }
9438
a7f2871e
AM
9439 if (!htab->no_tls_get_addr_opt
9440 && htab->tls_get_addr_fd != NULL
9441 && htab->tls_get_addr_fd->elf.plt.plist != NULL
9442 && !add_dynamic_entry (DT_PPC64_TLSOPT, 0))
9443 return FALSE;
9444
5bd4f169
AM
9445 if (relocs)
9446 {
dc810e39
AM
9447 if (!add_dynamic_entry (DT_RELA, 0)
9448 || !add_dynamic_entry (DT_RELASZ, 0)
9449 || !add_dynamic_entry (DT_RELAENT, sizeof (Elf64_External_Rela)))
b34976b6 9450 return FALSE;
5bd4f169 9451
65f38f15
AM
9452 /* If any dynamic relocs apply to a read-only section,
9453 then we need a DT_TEXTREL entry. */
248866a8 9454 if ((info->flags & DF_TEXTREL) == 0)
4ce794b7 9455 elf_link_hash_traverse (&htab->elf, readonly_dynrelocs, info);
5bd4f169 9456
65f38f15 9457 if ((info->flags & DF_TEXTREL) != 0)
5bd4f169 9458 {
65f38f15 9459 if (!add_dynamic_entry (DT_TEXTREL, 0))
b34976b6 9460 return FALSE;
5bd4f169 9461 }
5bd4f169 9462 }
5bd4f169 9463 }
65f38f15 9464#undef add_dynamic_entry
5bd4f169 9465
b34976b6 9466 return TRUE;
5bd4f169
AM
9467}
9468
721956f4 9469/* Determine the type of stub needed, if any, for a call. */
5bd4f169 9470
4ce794b7
AM
9471static inline enum ppc_stub_type
9472ppc_type_of_stub (asection *input_sec,
9473 const Elf_Internal_Rela *rel,
9474 struct ppc_link_hash_entry **hash,
e054468f 9475 struct plt_entry **plt_ent,
4ce794b7 9476 bfd_vma destination)
5bd4f169 9477{
721956f4
AM
9478 struct ppc_link_hash_entry *h = *hash;
9479 bfd_vma location;
9480 bfd_vma branch_offset;
9481 bfd_vma max_branch_offset;
4ce794b7 9482 enum elf_ppc64_reloc_type r_type;
5bd4f169 9483
721956f4
AM
9484 if (h != NULL)
9485 {
e054468f 9486 struct plt_entry *ent;
7fe2b9a6 9487 struct ppc_link_hash_entry *fdh = h;
b31867b6
AM
9488 if (h->oh != NULL
9489 && h->oh->is_func_descriptor)
7b8f6675
AM
9490 {
9491 fdh = ppc_follow_link (h->oh);
9492 *hash = fdh;
9493 }
8387904d 9494
e054468f
AM
9495 for (ent = fdh->elf.plt.plist; ent != NULL; ent = ent->next)
9496 if (ent->addend == rel->r_addend
9497 && ent->plt.offset != (bfd_vma) -1)
9498 {
e054468f
AM
9499 *plt_ent = ent;
9500 return ppc_stub_plt_call;
9501 }
5bd4f169 9502
7fe2b9a6
AM
9503 /* Here, we know we don't have a plt entry. If we don't have a
9504 either a defined function descriptor or a defined entry symbol
9505 in a regular object file, then it is pointless trying to make
9506 any other type of stub. */
854b41e7
AM
9507 if (!is_static_defined (&fdh->elf)
9508 && !is_static_defined (&h->elf))
721956f4 9509 return ppc_stub_none;
5d1634d7 9510 }
e054468f
AM
9511 else if (elf_local_got_ents (input_sec->owner) != NULL)
9512 {
9513 Elf_Internal_Shdr *symtab_hdr = &elf_symtab_hdr (input_sec->owner);
9514 struct plt_entry **local_plt = (struct plt_entry **)
9515 elf_local_got_ents (input_sec->owner) + symtab_hdr->sh_info;
9516 unsigned long r_symndx = ELF64_R_SYM (rel->r_info);
9517
9518 if (local_plt[r_symndx] != NULL)
9519 {
9520 struct plt_entry *ent;
9521
9522 for (ent = local_plt[r_symndx]; ent != NULL; ent = ent->next)
9523 if (ent->addend == rel->r_addend
9524 && ent->plt.offset != (bfd_vma) -1)
9525 {
9526 *plt_ent = ent;
9527 return ppc_stub_plt_call;
9528 }
9529 }
9530 }
5d1634d7 9531
721956f4
AM
9532 /* Determine where the call point is. */
9533 location = (input_sec->output_offset
9534 + input_sec->output_section->vma
9535 + rel->r_offset);
5d1634d7 9536
721956f4
AM
9537 branch_offset = destination - location;
9538 r_type = ELF64_R_TYPE (rel->r_info);
5d1634d7 9539
721956f4
AM
9540 /* Determine if a long branch stub is needed. */
9541 max_branch_offset = 1 << 25;
4ce794b7 9542 if (r_type != R_PPC64_REL24)
721956f4 9543 max_branch_offset = 1 << 15;
5d1634d7 9544
721956f4
AM
9545 if (branch_offset + max_branch_offset >= 2 * max_branch_offset)
9546 /* We need a stub. Figure out whether a long_branch or plt_branch
9547 is needed later. */
9548 return ppc_stub_long_branch;
5d1634d7 9549
721956f4 9550 return ppc_stub_none;
5d1634d7
AM
9551}
9552
794e51c0
AM
9553/* With power7 weakly ordered memory model, it is possible for ld.so
9554 to update a plt entry in one thread and have another thread see a
9555 stale zero toc entry. To avoid this we need some sort of acquire
9556 barrier in the call stub. One solution is to make the load of the
9557 toc word seem to appear to depend on the load of the function entry
9558 word. Another solution is to test for r2 being zero, and branch to
9559 the appropriate glink entry if so.
9560
9561 . fake dep barrier compare
9562 . ld 11,xxx(2) ld 11,xxx(2)
9563 . mtctr 11 mtctr 11
9564 . xor 11,11,11 ld 2,xxx+8(2)
9565 . add 2,2,11 cmpldi 2,0
9566 . ld 2,xxx+8(2) bnectr+
9567 . bctr b <glink_entry>
9568
9569 The solution involving the compare turns out to be faster, so
9570 that's what we use unless the branch won't reach. */
9571
9572#define ALWAYS_USE_FAKE_DEP 0
9573#define ALWAYS_EMIT_R2SAVE 0
5d1634d7 9574
5d1634d7
AM
9575#define PPC_LO(v) ((v) & 0xffff)
9576#define PPC_HI(v) (((v) >> 16) & 0xffff)
9577#define PPC_HA(v) PPC_HI ((v) + 0x8000)
9578
794e51c0
AM
9579static inline unsigned int
9580plt_stub_size (struct ppc_link_hash_table *htab,
9581 struct ppc_stub_hash_entry *stub_entry,
9582 bfd_vma off)
9583{
9584 unsigned size = PLT_CALL_STUB_SIZE;
9585
9586 if (!(ALWAYS_EMIT_R2SAVE
9587 || stub_entry->stub_type == ppc_stub_plt_call_r2save))
9588 size -= 4;
9589 if (!htab->plt_static_chain)
9590 size -= 4;
9591 if (htab->plt_thread_safe)
9592 size += 8;
9593 if (PPC_HA (off) == 0)
9594 size -= 4;
9595 if (PPC_HA (off + 8 + 8 * htab->plt_static_chain) != PPC_HA (off))
9596 size += 4;
9597 if (stub_entry->h != NULL
9598 && (stub_entry->h == htab->tls_get_addr_fd
9599 || stub_entry->h == htab->tls_get_addr)
9600 && !htab->no_tls_get_addr_opt)
9601 size += 13 * 4;
9602 return size;
9603}
9604
9605/* If this stub would cross fewer 2**plt_stub_align boundaries if we align,
9606 then return the padding needed to do so. */
9607static inline unsigned int
9608plt_stub_pad (struct ppc_link_hash_table *htab,
9609 struct ppc_stub_hash_entry *stub_entry,
9610 bfd_vma plt_off)
9611{
9612 int stub_align = 1 << htab->plt_stub_align;
9613 unsigned stub_size = plt_stub_size (htab, stub_entry, plt_off);
9614 bfd_vma stub_off = stub_entry->stub_sec->size;
9615
9616 if (((stub_off + stub_size - 1) & -stub_align) - (stub_off & -stub_align)
9617 > (stub_size & -stub_align))
9618 return stub_align - (stub_off & (stub_align - 1));
9619 return 0;
9620}
9621
9622/* Build a .plt call stub. */
9623
9624static inline bfd_byte *
9625build_plt_stub (struct ppc_link_hash_table *htab,
9626 struct ppc_stub_hash_entry *stub_entry,
9627 bfd_byte *p, bfd_vma offset, Elf_Internal_Rela *r)
9628{
9629 bfd *obfd = htab->stub_bfd;
9630 bfd_boolean plt_static_chain = htab->plt_static_chain;
9631 bfd_boolean plt_thread_safe = htab->plt_thread_safe;
9632 bfd_boolean use_fake_dep = plt_thread_safe;
9633 bfd_vma cmp_branch_off = 0;
9634
9635 if (!ALWAYS_USE_FAKE_DEP
9636 && plt_thread_safe
9637 && !(stub_entry->h != NULL
9638 && (stub_entry->h == htab->tls_get_addr_fd
9639 || stub_entry->h == htab->tls_get_addr)
9640 && !htab->no_tls_get_addr_opt))
9641 {
9642 bfd_vma pltoff = stub_entry->plt_ent->plt.offset & ~1;
9643 bfd_vma pltindex = (pltoff - PLT_INITIAL_ENTRY_SIZE) / PLT_ENTRY_SIZE;
9644 bfd_vma glinkoff = GLINK_CALL_STUB_SIZE + pltindex * 8;
9645 bfd_vma to, from;
9646
9647 if (pltindex > 32767)
9648 glinkoff += (pltindex - 32767) * 4;
9649 to = (glinkoff
9650 + htab->glink->output_offset
9651 + htab->glink->output_section->vma);
9652 from = (p - stub_entry->stub_sec->contents
9653 + 4 * (ALWAYS_EMIT_R2SAVE
9654 || stub_entry->stub_type == ppc_stub_plt_call_r2save)
9655 + 4 * (PPC_HA (offset) != 0)
9656 + 4 * (PPC_HA (offset + 8 + 8 * plt_static_chain)
9657 != PPC_HA (offset))
9658 + 4 * (plt_static_chain != 0)
9659 + 20
9660 + stub_entry->stub_sec->output_offset
9661 + stub_entry->stub_sec->output_section->vma);
9662 cmp_branch_off = to - from;
9663 use_fake_dep = cmp_branch_off + (1 << 25) >= (1 << 26);
9664 }
9665
ac2df442
AM
9666 if (PPC_HA (offset) != 0)
9667 {
176a0d42
AM
9668 if (r != NULL)
9669 {
794e51c0
AM
9670 if (ALWAYS_EMIT_R2SAVE
9671 || stub_entry->stub_type == ppc_stub_plt_call_r2save)
9672 r[0].r_offset += 4;
176a0d42 9673 r[0].r_info = ELF64_R_INFO (0, R_PPC64_TOC16_HA);
3b421ab3 9674 r[1].r_offset = r[0].r_offset + 4;
176a0d42
AM
9675 r[1].r_info = ELF64_R_INFO (0, R_PPC64_TOC16_LO_DS);
9676 r[1].r_addend = r[0].r_addend;
c7131b65 9677 if (PPC_HA (offset + 8 + 8 * plt_static_chain) != PPC_HA (offset))
176a0d42
AM
9678 {
9679 r[2].r_offset = r[1].r_offset + 4;
9680 r[2].r_info = ELF64_R_INFO (0, R_PPC64_TOC16_LO);
9681 r[2].r_addend = r[0].r_addend;
9682 }
9683 else
9684 {
794e51c0 9685 r[2].r_offset = r[1].r_offset + 8 + 8 * use_fake_dep;
176a0d42
AM
9686 r[2].r_info = ELF64_R_INFO (0, R_PPC64_TOC16_LO_DS);
9687 r[2].r_addend = r[0].r_addend + 8;
c7131b65
AM
9688 if (plt_static_chain)
9689 {
9690 r[3].r_offset = r[2].r_offset + 4;
9691 r[3].r_info = ELF64_R_INFO (0, R_PPC64_TOC16_LO_DS);
9692 r[3].r_addend = r[0].r_addend + 16;
9693 }
176a0d42
AM
9694 }
9695 }
794e51c0
AM
9696 if (ALWAYS_EMIT_R2SAVE
9697 || stub_entry->stub_type == ppc_stub_plt_call_r2save)
9698 bfd_put_32 (obfd, STD_R2_40R1, p), p += 4;
3b421ab3 9699 bfd_put_32 (obfd, ADDIS_R12_R2 | PPC_HA (offset), p), p += 4;
ac2df442 9700 bfd_put_32 (obfd, LD_R11_0R12 | PPC_LO (offset), p), p += 4;
9df0ef5f 9701 if (PPC_HA (offset + 8 + 8 * plt_static_chain) != PPC_HA (offset))
ac2df442
AM
9702 {
9703 bfd_put_32 (obfd, ADDI_R12_R12 | PPC_LO (offset), p), p += 4;
9704 offset = 0;
9705 }
9706 bfd_put_32 (obfd, MTCTR_R11, p), p += 4;
794e51c0
AM
9707 if (use_fake_dep)
9708 {
9709 bfd_put_32 (obfd, XOR_R11_R11_R11, p), p += 4;
9710 bfd_put_32 (obfd, ADD_R12_R12_R11, p), p += 4;
9711 }
ac2df442 9712 bfd_put_32 (obfd, LD_R2_0R12 | PPC_LO (offset + 8), p), p += 4;
9df0ef5f
AM
9713 if (plt_static_chain)
9714 bfd_put_32 (obfd, LD_R11_0R12 | PPC_LO (offset + 16), p), p += 4;
ac2df442
AM
9715 }
9716 else
9717 {
176a0d42
AM
9718 if (r != NULL)
9719 {
794e51c0
AM
9720 if (ALWAYS_EMIT_R2SAVE
9721 || stub_entry->stub_type == ppc_stub_plt_call_r2save)
9722 r[0].r_offset += 4;
176a0d42 9723 r[0].r_info = ELF64_R_INFO (0, R_PPC64_TOC16_DS);
c7131b65 9724 if (PPC_HA (offset + 8 + 8 * plt_static_chain) != PPC_HA (offset))
176a0d42
AM
9725 {
9726 r[1].r_offset = r[0].r_offset + 4;
9727 r[1].r_info = ELF64_R_INFO (0, R_PPC64_TOC16);
9728 r[1].r_addend = r[0].r_addend;
9729 }
9730 else
9731 {
794e51c0 9732 r[1].r_offset = r[0].r_offset + 8 + 8 * use_fake_dep;
176a0d42 9733 r[1].r_info = ELF64_R_INFO (0, R_PPC64_TOC16_DS);
c7131b65
AM
9734 r[1].r_addend = r[0].r_addend + 8 + 8 * plt_static_chain;
9735 if (plt_static_chain)
9736 {
9737 r[2].r_offset = r[1].r_offset + 4;
9738 r[2].r_info = ELF64_R_INFO (0, R_PPC64_TOC16_DS);
9739 r[2].r_addend = r[0].r_addend + 8;
9740 }
176a0d42
AM
9741 }
9742 }
794e51c0
AM
9743 if (ALWAYS_EMIT_R2SAVE
9744 || stub_entry->stub_type == ppc_stub_plt_call_r2save)
9745 bfd_put_32 (obfd, STD_R2_40R1, p), p += 4;
ac2df442 9746 bfd_put_32 (obfd, LD_R11_0R2 | PPC_LO (offset), p), p += 4;
9df0ef5f 9747 if (PPC_HA (offset + 8 + 8 * plt_static_chain) != PPC_HA (offset))
ac2df442
AM
9748 {
9749 bfd_put_32 (obfd, ADDI_R2_R2 | PPC_LO (offset), p), p += 4;
9750 offset = 0;
9751 }
9752 bfd_put_32 (obfd, MTCTR_R11, p), p += 4;
794e51c0
AM
9753 if (use_fake_dep)
9754 {
9755 bfd_put_32 (obfd, XOR_R11_R11_R11, p), p += 4;
9756 bfd_put_32 (obfd, ADD_R2_R2_R11, p), p += 4;
9757 }
9df0ef5f
AM
9758 if (plt_static_chain)
9759 bfd_put_32 (obfd, LD_R11_0R2 | PPC_LO (offset + 16), p), p += 4;
ac2df442 9760 bfd_put_32 (obfd, LD_R2_0R2 | PPC_LO (offset + 8), p), p += 4;
ac2df442 9761 }
794e51c0
AM
9762 if (plt_thread_safe && !use_fake_dep)
9763 {
9764 bfd_put_32 (obfd, CMPLDI_R2_0, p), p += 4;
9765 bfd_put_32 (obfd, BNECTR_P4, p), p += 4;
9766 bfd_put_32 (obfd, B_DOT + cmp_branch_off, p), p += 4;
9767 }
9768 else
9769 bfd_put_32 (obfd, BCTR, p), p += 4;
5d1634d7
AM
9770 return p;
9771}
9772
a7f2871e
AM
9773/* Build a special .plt call stub for __tls_get_addr. */
9774
9775#define LD_R11_0R3 0xe9630000
9776#define LD_R12_0R3 0xe9830000
9777#define MR_R0_R3 0x7c601b78
9778#define CMPDI_R11_0 0x2c2b0000
9779#define ADD_R3_R12_R13 0x7c6c6a14
9780#define BEQLR 0x4d820020
9781#define MR_R3_R0 0x7c030378
9782#define MFLR_R11 0x7d6802a6
9783#define STD_R11_0R1 0xf9610000
9784#define BCTRL 0x4e800421
9785#define LD_R11_0R1 0xe9610000
9786#define LD_R2_0R1 0xe8410000
9787#define MTLR_R11 0x7d6803a6
9788
9789static inline bfd_byte *
794e51c0
AM
9790build_tls_get_addr_stub (struct ppc_link_hash_table *htab,
9791 struct ppc_stub_hash_entry *stub_entry,
9792 bfd_byte *p, bfd_vma offset, Elf_Internal_Rela *r)
a7f2871e 9793{
794e51c0
AM
9794 bfd *obfd = htab->stub_bfd;
9795
a7f2871e
AM
9796 bfd_put_32 (obfd, LD_R11_0R3 + 0, p), p += 4;
9797 bfd_put_32 (obfd, LD_R12_0R3 + 8, p), p += 4;
9798 bfd_put_32 (obfd, MR_R0_R3, p), p += 4;
9799 bfd_put_32 (obfd, CMPDI_R11_0, p), p += 4;
9800 bfd_put_32 (obfd, ADD_R3_R12_R13, p), p += 4;
9801 bfd_put_32 (obfd, BEQLR, p), p += 4;
9802 bfd_put_32 (obfd, MR_R3_R0, p), p += 4;
9803 bfd_put_32 (obfd, MFLR_R11, p), p += 4;
9804 bfd_put_32 (obfd, STD_R11_0R1 + 32, p), p += 4;
9805
9806 if (r != NULL)
9807 r[0].r_offset += 9 * 4;
794e51c0 9808 p = build_plt_stub (htab, stub_entry, p, offset, r);
a7f2871e
AM
9809 bfd_put_32 (obfd, BCTRL, p - 4);
9810
9811 bfd_put_32 (obfd, LD_R11_0R1 + 32, p), p += 4;
9812 bfd_put_32 (obfd, LD_R2_0R1 + 40, p), p += 4;
9813 bfd_put_32 (obfd, MTLR_R11, p), p += 4;
9814 bfd_put_32 (obfd, BLR, p), p += 4;
9815
9816 return p;
9817}
9818
176a0d42
AM
9819static Elf_Internal_Rela *
9820get_relocs (asection *sec, int count)
9821{
9822 Elf_Internal_Rela *relocs;
9823 struct bfd_elf_section_data *elfsec_data;
9824
9825 elfsec_data = elf_section_data (sec);
9826 relocs = elfsec_data->relocs;
9827 if (relocs == NULL)
9828 {
9829 bfd_size_type relsize;
9830 relsize = sec->reloc_count * sizeof (*relocs);
9831 relocs = bfd_alloc (sec->owner, relsize);
9832 if (relocs == NULL)
9833 return NULL;
9834 elfsec_data->relocs = relocs;
d4730f92
BS
9835 elfsec_data->rela.hdr = bfd_zalloc (sec->owner,
9836 sizeof (Elf_Internal_Shdr));
9837 if (elfsec_data->rela.hdr == NULL)
9838 return NULL;
9839 elfsec_data->rela.hdr->sh_size = (sec->reloc_count
9840 * sizeof (Elf64_External_Rela));
9841 elfsec_data->rela.hdr->sh_entsize = sizeof (Elf64_External_Rela);
176a0d42
AM
9842 sec->reloc_count = 0;
9843 }
9844 relocs += sec->reloc_count;
9845 sec->reloc_count += count;
9846 return relocs;
9847}
9848
aa374f67 9849static bfd_vma
25f53a85 9850get_r2off (struct bfd_link_info *info,
aa374f67
AM
9851 struct ppc_stub_hash_entry *stub_entry)
9852{
25f53a85 9853 struct ppc_link_hash_table *htab = ppc_hash_table (info);
aa374f67
AM
9854 bfd_vma r2off = htab->stub_group[stub_entry->target_section->id].toc_off;
9855
9856 if (r2off == 0)
9857 {
9858 /* Support linking -R objects. Get the toc pointer from the
9859 opd entry. */
9860 char buf[8];
9861 asection *opd = stub_entry->h->elf.root.u.def.section;
9862 bfd_vma opd_off = stub_entry->h->elf.root.u.def.value;
9863
9864 if (strcmp (opd->name, ".opd") != 0
9865 || opd->reloc_count != 0)
9866 {
8de848d8 9867 info->callbacks->einfo (_("%P: cannot find opd entry toc for %s\n"),
25f53a85 9868 stub_entry->h->elf.root.root.string);
aa374f67
AM
9869 bfd_set_error (bfd_error_bad_value);
9870 return 0;
9871 }
9872 if (!bfd_get_section_contents (opd->owner, opd, buf, opd_off + 8, 8))
9873 return 0;
9874 r2off = bfd_get_64 (opd->owner, buf);
25f53a85 9875 r2off -= elf_gp (info->output_bfd);
aa374f67
AM
9876 }
9877 r2off -= htab->stub_group[stub_entry->id_sec->id].toc_off;
9878 return r2off;
9879}
9880
b34976b6 9881static bfd_boolean
4ce794b7 9882ppc_build_one_stub (struct bfd_hash_entry *gen_entry, void *in_arg)
5d1634d7 9883{
721956f4
AM
9884 struct ppc_stub_hash_entry *stub_entry;
9885 struct ppc_branch_hash_entry *br_entry;
5d1634d7
AM
9886 struct bfd_link_info *info;
9887 struct ppc_link_hash_table *htab;
721956f4
AM
9888 bfd_byte *loc;
9889 bfd_byte *p;
ee75fd95 9890 bfd_vma dest, off;
721956f4 9891 int size;
176a0d42 9892 Elf_Internal_Rela *r;
e054468f 9893 asection *plt;
5d1634d7 9894
721956f4
AM
9895 /* Massage our args to the form they really have. */
9896 stub_entry = (struct ppc_stub_hash_entry *) gen_entry;
4ce794b7 9897 info = in_arg;
5d1634d7 9898
5d1634d7 9899 htab = ppc_hash_table (info);
4dfe6ac6
NC
9900 if (htab == NULL)
9901 return FALSE;
5d1634d7 9902
721956f4 9903 /* Make a note of the offset within the stubs for this entry. */
eea6121a 9904 stub_entry->stub_offset = stub_entry->stub_sec->size;
97b639ba 9905 loc = stub_entry->stub_sec->contents + stub_entry->stub_offset;
721956f4 9906
4ce794b7 9907 htab->stub_count[stub_entry->stub_type - 1] += 1;
721956f4 9908 switch (stub_entry->stub_type)
5d1634d7 9909 {
721956f4 9910 case ppc_stub_long_branch:
ad8e1ba5 9911 case ppc_stub_long_branch_r2off:
721956f4 9912 /* Branches are relative. This is where we are going to. */
ee75fd95
AM
9913 off = dest = (stub_entry->target_value
9914 + stub_entry->target_section->output_offset
9915 + stub_entry->target_section->output_section->vma);
5d1634d7 9916
721956f4
AM
9917 /* And this is where we are coming from. */
9918 off -= (stub_entry->stub_offset
97b639ba
AM
9919 + stub_entry->stub_sec->output_offset
9920 + stub_entry->stub_sec->output_section->vma);
e86ce104 9921
ac2df442
AM
9922 size = 4;
9923 if (stub_entry->stub_type == ppc_stub_long_branch_r2off)
ad8e1ba5 9924 {
25f53a85 9925 bfd_vma r2off = get_r2off (info, stub_entry);
ad8e1ba5 9926
aa374f67
AM
9927 if (r2off == 0)
9928 {
9929 htab->stub_error = TRUE;
9930 return FALSE;
9931 }
97b639ba 9932 bfd_put_32 (htab->stub_bfd, STD_R2_40R1, loc);
ad8e1ba5 9933 loc += 4;
ac2df442
AM
9934 size = 12;
9935 if (PPC_HA (r2off) != 0)
9936 {
9937 size = 16;
9938 bfd_put_32 (htab->stub_bfd, ADDIS_R2_R2 | PPC_HA (r2off), loc);
9939 loc += 4;
9940 }
97b639ba 9941 bfd_put_32 (htab->stub_bfd, ADDI_R2_R2 | PPC_LO (r2off), loc);
ad8e1ba5 9942 loc += 4;
ac2df442 9943 off -= size - 4;
ad8e1ba5 9944 }
97b639ba 9945 bfd_put_32 (htab->stub_bfd, B_DOT | (off & 0x3fffffc), loc);
ad8e1ba5 9946
5c3dead3
AM
9947 if (off + (1 << 25) >= (bfd_vma) (1 << 26))
9948 {
8de848d8 9949 info->callbacks->einfo (_("%P: long branch stub `%s' offset overflow\n"),
25f53a85 9950 stub_entry->root.string);
5c3dead3
AM
9951 htab->stub_error = TRUE;
9952 return FALSE;
9953 }
ee75fd95
AM
9954
9955 if (info->emitrelocations)
9956 {
176a0d42
AM
9957 r = get_relocs (stub_entry->stub_sec, 1);
9958 if (r == NULL)
9959 return FALSE;
ee75fd95
AM
9960 r->r_offset = loc - stub_entry->stub_sec->contents;
9961 r->r_info = ELF64_R_INFO (0, R_PPC64_REL24);
9962 r->r_addend = dest;
9963 if (stub_entry->h != NULL)
9964 {
9965 struct elf_link_hash_entry **hashes;
9966 unsigned long symndx;
9967 struct ppc_link_hash_entry *h;
9968
9969 hashes = elf_sym_hashes (htab->stub_bfd);
9970 if (hashes == NULL)
9971 {
9972 bfd_size_type hsize;
9973
9974 hsize = (htab->stub_globals + 1) * sizeof (*hashes);
9975 hashes = bfd_zalloc (htab->stub_bfd, hsize);
9976 if (hashes == NULL)
9977 return FALSE;
9978 elf_sym_hashes (htab->stub_bfd) = hashes;
9979 htab->stub_globals = 1;
9980 }
9981 symndx = htab->stub_globals++;
9982 h = stub_entry->h;
9983 hashes[symndx] = &h->elf;
9984 r->r_info = ELF64_R_INFO (symndx, R_PPC64_REL24);
9985 if (h->oh != NULL && h->oh->is_func)
b31867b6 9986 h = ppc_follow_link (h->oh);
ee75fd95
AM
9987 if (h->elf.root.u.def.section != stub_entry->target_section)
9988 /* H is an opd symbol. The addend must be zero. */
9989 r->r_addend = 0;
9990 else
9991 {
9992 off = (h->elf.root.u.def.value
9993 + h->elf.root.u.def.section->output_offset
9994 + h->elf.root.u.def.section->output_section->vma);
9995 r->r_addend -= off;
9996 }
9997 }
9998 }
721956f4 9999 break;
e86ce104 10000
721956f4 10001 case ppc_stub_plt_branch:
ad8e1ba5 10002 case ppc_stub_plt_branch_r2off:
721956f4
AM
10003 br_entry = ppc_branch_hash_lookup (&htab->branch_hash_table,
10004 stub_entry->root.string + 9,
b34976b6 10005 FALSE, FALSE);
721956f4
AM
10006 if (br_entry == NULL)
10007 {
8de848d8 10008 info->callbacks->einfo (_("%P: can't find branch stub `%s'\n"),
25f53a85 10009 stub_entry->root.string);
b34976b6
AM
10010 htab->stub_error = TRUE;
10011 return FALSE;
721956f4
AM
10012 }
10013
176a0d42
AM
10014 dest = (stub_entry->target_value
10015 + stub_entry->target_section->output_offset
10016 + stub_entry->target_section->output_section->vma);
721956f4 10017
176a0d42 10018 bfd_put_64 (htab->brlt->owner, dest,
4ce794b7 10019 htab->brlt->contents + br_entry->offset);
721956f4 10020
f94498ff 10021 if (br_entry->iter == htab->stub_iteration)
721956f4 10022 {
f94498ff 10023 br_entry->iter = 0;
84f5d08e 10024
f94498ff 10025 if (htab->relbrlt != NULL)
84f5d08e 10026 {
f94498ff
AM
10027 /* Create a reloc for the branch lookup table entry. */
10028 Elf_Internal_Rela rela;
10029 bfd_byte *rl;
10030
10031 rela.r_offset = (br_entry->offset
10032 + htab->brlt->output_offset
10033 + htab->brlt->output_section->vma);
10034 rela.r_info = ELF64_R_INFO (0, R_PPC64_RELATIVE);
176a0d42 10035 rela.r_addend = dest;
f94498ff
AM
10036
10037 rl = htab->relbrlt->contents;
10038 rl += (htab->relbrlt->reloc_count++
10039 * sizeof (Elf64_External_Rela));
10040 bfd_elf64_swap_reloca_out (htab->relbrlt->owner, &rela, rl);
10041 }
10042 else if (info->emitrelocations)
10043 {
176a0d42
AM
10044 r = get_relocs (htab->brlt, 1);
10045 if (r == NULL)
10046 return FALSE;
10047 /* brlt, being SEC_LINKER_CREATED does not go through the
10048 normal reloc processing. Symbols and offsets are not
10049 translated from input file to output file form, so
10050 set up the offset per the output file. */
f94498ff
AM
10051 r->r_offset = (br_entry->offset
10052 + htab->brlt->output_offset
10053 + htab->brlt->output_section->vma);
10054 r->r_info = ELF64_R_INFO (0, R_PPC64_RELATIVE);
176a0d42 10055 r->r_addend = dest;
84f5d08e 10056 }
84f5d08e 10057 }
721956f4 10058
176a0d42
AM
10059 dest = (br_entry->offset
10060 + htab->brlt->output_offset
10061 + htab->brlt->output_section->vma);
10062
10063 off = (dest
4ce794b7 10064 - elf_gp (htab->brlt->output_section->owner)
ad8e1ba5 10065 - htab->stub_group[stub_entry->id_sec->id].toc_off);
721956f4 10066
ad8e1ba5 10067 if (off + 0x80008000 > 0xffffffff || (off & 7) != 0)
5d1634d7 10068 {
25f53a85 10069 info->callbacks->einfo
8de848d8 10070 (_("%P: linkage table error against `%s'\n"),
721956f4 10071 stub_entry->root.string);
5d1634d7 10072 bfd_set_error (bfd_error_bad_value);
b34976b6
AM
10073 htab->stub_error = TRUE;
10074 return FALSE;
5d1634d7 10075 }
41bd81ab 10076
176a0d42
AM
10077 if (info->emitrelocations)
10078 {
10079 r = get_relocs (stub_entry->stub_sec, 1 + (PPC_HA (off) != 0));
10080 if (r == NULL)
10081 return FALSE;
10082 r[0].r_offset = loc - stub_entry->stub_sec->contents;
7cfbafbc
AM
10083 if (bfd_big_endian (info->output_bfd))
10084 r[0].r_offset += 2;
176a0d42
AM
10085 if (stub_entry->stub_type == ppc_stub_plt_branch_r2off)
10086 r[0].r_offset += 4;
10087 r[0].r_info = ELF64_R_INFO (0, R_PPC64_TOC16_DS);
10088 r[0].r_addend = dest;
10089 if (PPC_HA (off) != 0)
10090 {
10091 r[0].r_info = ELF64_R_INFO (0, R_PPC64_TOC16_HA);
10092 r[1].r_offset = r[0].r_offset + 4;
10093 r[1].r_info = ELF64_R_INFO (0, R_PPC64_TOC16_LO_DS);
10094 r[1].r_addend = r[0].r_addend;
10095 }
10096 }
10097
ad8e1ba5
AM
10098 if (stub_entry->stub_type != ppc_stub_plt_branch_r2off)
10099 {
176a0d42 10100 if (PPC_HA (off) != 0)
ac2df442
AM
10101 {
10102 size = 16;
176a0d42 10103 bfd_put_32 (htab->stub_bfd, ADDIS_R12_R2 | PPC_HA (off), loc);
ac2df442 10104 loc += 4;
176a0d42 10105 bfd_put_32 (htab->stub_bfd, LD_R11_0R12 | PPC_LO (off), loc);
ac2df442
AM
10106 }
10107 else
10108 {
10109 size = 12;
176a0d42 10110 bfd_put_32 (htab->stub_bfd, LD_R11_0R2 | PPC_LO (off), loc);
ac2df442 10111 }
ad8e1ba5
AM
10112 }
10113 else
10114 {
25f53a85 10115 bfd_vma r2off = get_r2off (info, stub_entry);
aa374f67
AM
10116
10117 if (r2off == 0)
10118 {
10119 htab->stub_error = TRUE;
10120 return FALSE;
10121 }
ad8e1ba5 10122
97b639ba 10123 bfd_put_32 (htab->stub_bfd, STD_R2_40R1, loc);
ad8e1ba5 10124 loc += 4;
ac2df442 10125 size = 20;
176a0d42 10126 if (PPC_HA (off) != 0)
ac2df442
AM
10127 {
10128 size += 4;
176a0d42 10129 bfd_put_32 (htab->stub_bfd, ADDIS_R12_R2 | PPC_HA (off), loc);
ac2df442 10130 loc += 4;
176a0d42 10131 bfd_put_32 (htab->stub_bfd, LD_R11_0R12 | PPC_LO (off), loc);
ac2df442
AM
10132 loc += 4;
10133 }
10134 else
10135 {
176a0d42 10136 bfd_put_32 (htab->stub_bfd, LD_R11_0R2 | PPC_LO (off), loc);
ac2df442
AM
10137 loc += 4;
10138 }
10139
10140 if (PPC_HA (r2off) != 0)
10141 {
10142 size += 4;
10143 bfd_put_32 (htab->stub_bfd, ADDIS_R2_R2 | PPC_HA (r2off), loc);
10144 loc += 4;
10145 }
97b639ba 10146 bfd_put_32 (htab->stub_bfd, ADDI_R2_R2 | PPC_LO (r2off), loc);
ad8e1ba5
AM
10147 }
10148 loc += 4;
97b639ba 10149 bfd_put_32 (htab->stub_bfd, MTCTR_R11, loc);
ad8e1ba5 10150 loc += 4;
97b639ba 10151 bfd_put_32 (htab->stub_bfd, BCTR, loc);
721956f4 10152 break;
5d1634d7 10153
721956f4 10154 case ppc_stub_plt_call:
794e51c0 10155 case ppc_stub_plt_call_r2save:
e054468f 10156 if (stub_entry->h != NULL
b31867b6
AM
10157 && stub_entry->h->is_func_descriptor
10158 && stub_entry->h->oh != NULL)
c862ae31 10159 {
b31867b6
AM
10160 struct ppc_link_hash_entry *fh = ppc_follow_link (stub_entry->h->oh);
10161
10162 /* If the old-ABI "dot-symbol" is undefined make it weak so
10163 we don't get a link error from RELOC_FOR_GLOBAL_SYMBOL.
10164 FIXME: We used to define the symbol on one of the call
10165 stubs instead, which is why we test symbol section id
10166 against htab->top_id in various places. Likely all
10167 these checks could now disappear. */
10168 if (fh->elf.root.type == bfd_link_hash_undefined)
10169 fh->elf.root.type = bfd_link_hash_undefweak;
9507a174
AM
10170 /* Stop undo_symbol_twiddle changing it back to undefined. */
10171 fh->was_undefined = 0;
c862ae31
AM
10172 }
10173
721956f4 10174 /* Now build the stub. */
e054468f 10175 dest = stub_entry->plt_ent->plt.offset & ~1;
176a0d42 10176 if (dest >= (bfd_vma) -2)
721956f4
AM
10177 abort ();
10178
e054468f 10179 plt = htab->plt;
25f23106
AM
10180 if (!htab->elf.dynamic_sections_created
10181 || stub_entry->h == NULL
10182 || stub_entry->h->elf.dynindx == -1)
e054468f
AM
10183 plt = htab->iplt;
10184
10185 dest += plt->output_offset + plt->output_section->vma;
10186
10187 if (stub_entry->h == NULL
10188 && (stub_entry->plt_ent->plt.offset & 1) == 0)
10189 {
10190 Elf_Internal_Rela rela;
10191 bfd_byte *rl;
10192
10193 rela.r_offset = dest;
25f23106 10194 rela.r_info = ELF64_R_INFO (0, R_PPC64_JMP_IREL);
e054468f
AM
10195 rela.r_addend = (stub_entry->target_value
10196 + stub_entry->target_section->output_offset
10197 + stub_entry->target_section->output_section->vma);
10198
25f23106
AM
10199 rl = (htab->reliplt->contents
10200 + (htab->reliplt->reloc_count++
10201 * sizeof (Elf64_External_Rela)));
10202 bfd_elf64_swap_reloca_out (info->output_bfd, &rela, rl);
e054468f
AM
10203 stub_entry->plt_ent->plt.offset |= 1;
10204 }
176a0d42
AM
10205
10206 off = (dest
e054468f 10207 - elf_gp (plt->output_section->owner)
176a0d42 10208 - htab->stub_group[stub_entry->id_sec->id].toc_off);
721956f4 10209
ad8e1ba5 10210 if (off + 0x80008000 > 0xffffffff || (off & 7) != 0)
721956f4 10211 {
25f53a85 10212 info->callbacks->einfo
8de848d8 10213 (_("%P: linkage table error against `%s'\n"),
e054468f
AM
10214 stub_entry->h != NULL
10215 ? stub_entry->h->elf.root.root.string
10216 : "<local sym>");
721956f4 10217 bfd_set_error (bfd_error_bad_value);
b34976b6
AM
10218 htab->stub_error = TRUE;
10219 return FALSE;
721956f4
AM
10220 }
10221
794e51c0
AM
10222 if (htab->plt_stub_align != 0)
10223 {
10224 unsigned pad = plt_stub_pad (htab, stub_entry, off);
10225
10226 stub_entry->stub_sec->size += pad;
10227 stub_entry->stub_offset = stub_entry->stub_sec->size;
10228 loc += pad;
10229 }
10230
176a0d42
AM
10231 r = NULL;
10232 if (info->emitrelocations)
10233 {
10234 r = get_relocs (stub_entry->stub_sec,
c7131b65
AM
10235 (2
10236 + (PPC_HA (off) != 0)
10237 + (htab->plt_static_chain
10238 && PPC_HA (off + 16) == PPC_HA (off))));
176a0d42
AM
10239 if (r == NULL)
10240 return FALSE;
10241 r[0].r_offset = loc - stub_entry->stub_sec->contents;
7cfbafbc
AM
10242 if (bfd_big_endian (info->output_bfd))
10243 r[0].r_offset += 2;
176a0d42
AM
10244 r[0].r_addend = dest;
10245 }
a7f2871e
AM
10246 if (stub_entry->h != NULL
10247 && (stub_entry->h == htab->tls_get_addr_fd
10248 || stub_entry->h == htab->tls_get_addr)
10249 && !htab->no_tls_get_addr_opt)
794e51c0 10250 p = build_tls_get_addr_stub (htab, stub_entry, loc, off, r);
a7f2871e 10251 else
794e51c0 10252 p = build_plt_stub (htab, stub_entry, loc, off, r);
721956f4
AM
10253 size = p - loc;
10254 break;
10255
10256 default:
10257 BFD_FAIL ();
b34976b6 10258 return FALSE;
721956f4
AM
10259 }
10260
eea6121a 10261 stub_entry->stub_sec->size += size;
97b639ba 10262
ee75fd95 10263 if (htab->emit_stub_syms)
97b639ba
AM
10264 {
10265 struct elf_link_hash_entry *h;
ee75fd95
AM
10266 size_t len1, len2;
10267 char *name;
10268 const char *const stub_str[] = { "long_branch",
10269 "long_branch_r2off",
10270 "plt_branch",
10271 "plt_branch_r2off",
794e51c0 10272 "plt_call",
ee75fd95
AM
10273 "plt_call" };
10274
10275 len1 = strlen (stub_str[stub_entry->stub_type - 1]);
10276 len2 = strlen (stub_entry->root.string);
10277 name = bfd_malloc (len1 + len2 + 2);
10278 if (name == NULL)
10279 return FALSE;
10280 memcpy (name, stub_entry->root.string, 9);
10281 memcpy (name + 9, stub_str[stub_entry->stub_type - 1], len1);
10282 memcpy (name + len1 + 9, stub_entry->root.string + 8, len2 - 8 + 1);
10283 h = elf_link_hash_lookup (&htab->elf, name, TRUE, FALSE, FALSE);
97b639ba
AM
10284 if (h == NULL)
10285 return FALSE;
10286 if (h->root.type == bfd_link_hash_new)
10287 {
10288 h->root.type = bfd_link_hash_defined;
10289 h->root.u.def.section = stub_entry->stub_sec;
10290 h->root.u.def.value = stub_entry->stub_offset;
f5385ebf
AM
10291 h->ref_regular = 1;
10292 h->def_regular = 1;
10293 h->ref_regular_nonweak = 1;
10294 h->forced_local = 1;
10295 h->non_elf = 0;
97b639ba
AM
10296 }
10297 }
10298
b34976b6 10299 return TRUE;
721956f4
AM
10300}
10301
10302/* As above, but don't actually build the stub. Just bump offset so
10303 we know stub section sizes, and select plt_branch stubs where
10304 long_branch stubs won't do. */
10305
b34976b6 10306static bfd_boolean
4ce794b7 10307ppc_size_one_stub (struct bfd_hash_entry *gen_entry, void *in_arg)
721956f4
AM
10308{
10309 struct ppc_stub_hash_entry *stub_entry;
63bc6f6c 10310 struct bfd_link_info *info;
721956f4
AM
10311 struct ppc_link_hash_table *htab;
10312 bfd_vma off;
10313 int size;
10314
10315 /* Massage our args to the form they really have. */
10316 stub_entry = (struct ppc_stub_hash_entry *) gen_entry;
63bc6f6c
AM
10317 info = in_arg;
10318
10319 htab = ppc_hash_table (info);
4dfe6ac6
NC
10320 if (htab == NULL)
10321 return FALSE;
721956f4 10322
794e51c0
AM
10323 if (stub_entry->stub_type == ppc_stub_plt_call
10324 || stub_entry->stub_type == ppc_stub_plt_call_r2save)
721956f4 10325 {
e054468f
AM
10326 asection *plt;
10327 off = stub_entry->plt_ent->plt.offset & ~(bfd_vma) 1;
58ac9f71 10328 if (off >= (bfd_vma) -2)
411e1bfb 10329 abort ();
e054468f 10330 plt = htab->plt;
25f23106
AM
10331 if (!htab->elf.dynamic_sections_created
10332 || stub_entry->h == NULL
10333 || stub_entry->h->elf.dynindx == -1)
e054468f
AM
10334 plt = htab->iplt;
10335 off += (plt->output_offset
10336 + plt->output_section->vma
10337 - elf_gp (plt->output_section->owner)
ad8e1ba5 10338 - htab->stub_group[stub_entry->id_sec->id].toc_off);
721956f4 10339
794e51c0
AM
10340 size = plt_stub_size (htab, stub_entry, off);
10341 if (htab->plt_stub_align)
10342 size += plt_stub_pad (htab, stub_entry, off);
176a0d42
AM
10343 if (info->emitrelocations)
10344 {
10345 stub_entry->stub_sec->reloc_count
c7131b65
AM
10346 += (2
10347 + (PPC_HA (off) != 0)
10348 + (htab->plt_static_chain
10349 && PPC_HA (off + 16) == PPC_HA (off)));
176a0d42
AM
10350 stub_entry->stub_sec->flags |= SEC_RELOC;
10351 }
721956f4
AM
10352 }
10353 else
10354 {
ad8e1ba5
AM
10355 /* ppc_stub_long_branch or ppc_stub_plt_branch, or their r2off
10356 variants. */
ac2df442
AM
10357 bfd_vma r2off = 0;
10358
721956f4
AM
10359 off = (stub_entry->target_value
10360 + stub_entry->target_section->output_offset
10361 + stub_entry->target_section->output_section->vma);
eea6121a 10362 off -= (stub_entry->stub_sec->size
721956f4
AM
10363 + stub_entry->stub_sec->output_offset
10364 + stub_entry->stub_sec->output_section->vma);
10365
ad8e1ba5
AM
10366 /* Reset the stub type from the plt variant in case we now
10367 can reach with a shorter stub. */
10368 if (stub_entry->stub_type >= ppc_stub_plt_branch)
10369 stub_entry->stub_type += ppc_stub_long_branch - ppc_stub_plt_branch;
10370
10371 size = 4;
10372 if (stub_entry->stub_type == ppc_stub_long_branch_r2off)
10373 {
25f53a85 10374 r2off = get_r2off (info, stub_entry);
aa374f67
AM
10375 if (r2off == 0)
10376 {
10377 htab->stub_error = TRUE;
10378 return FALSE;
10379 }
ac2df442
AM
10380 size = 12;
10381 if (PPC_HA (r2off) != 0)
10382 size = 16;
10383 off -= size - 4;
ad8e1ba5
AM
10384 }
10385
10386 /* If the branch offset if too big, use a ppc_stub_plt_branch. */
721956f4
AM
10387 if (off + (1 << 25) >= (bfd_vma) (1 << 26))
10388 {
10389 struct ppc_branch_hash_entry *br_entry;
10390
10391 br_entry = ppc_branch_hash_lookup (&htab->branch_hash_table,
10392 stub_entry->root.string + 9,
b34976b6 10393 TRUE, FALSE);
721956f4
AM
10394 if (br_entry == NULL)
10395 {
8de848d8 10396 info->callbacks->einfo (_("%P: can't build branch stub `%s'\n"),
25f53a85 10397 stub_entry->root.string);
b34976b6
AM
10398 htab->stub_error = TRUE;
10399 return FALSE;
721956f4
AM
10400 }
10401
10402 if (br_entry->iter != htab->stub_iteration)
10403 {
10404 br_entry->iter = htab->stub_iteration;
eea6121a
AM
10405 br_entry->offset = htab->brlt->size;
10406 htab->brlt->size += 8;
63bc6f6c 10407
ee75fd95 10408 if (htab->relbrlt != NULL)
eea6121a 10409 htab->relbrlt->size += sizeof (Elf64_External_Rela);
84f5d08e
AM
10410 else if (info->emitrelocations)
10411 {
10412 htab->brlt->reloc_count += 1;
10413 htab->brlt->flags |= SEC_RELOC;
10414 }
721956f4 10415 }
ad8e1ba5
AM
10416
10417 stub_entry->stub_type += ppc_stub_plt_branch - ppc_stub_long_branch;
ac2df442
AM
10418 off = (br_entry->offset
10419 + htab->brlt->output_offset
10420 + htab->brlt->output_section->vma
10421 - elf_gp (htab->brlt->output_section->owner)
10422 - htab->stub_group[stub_entry->id_sec->id].toc_off);
10423
176a0d42
AM
10424 if (info->emitrelocations)
10425 {
10426 stub_entry->stub_sec->reloc_count += 1 + (PPC_HA (off) != 0);
10427 stub_entry->stub_sec->flags |= SEC_RELOC;
10428 }
10429
ac2df442
AM
10430 if (stub_entry->stub_type != ppc_stub_plt_branch_r2off)
10431 {
10432 size = 12;
176a0d42 10433 if (PPC_HA (off) != 0)
ac2df442
AM
10434 size = 16;
10435 }
10436 else
10437 {
10438 size = 20;
176a0d42 10439 if (PPC_HA (off) != 0)
ac2df442
AM
10440 size += 4;
10441
10442 if (PPC_HA (r2off) != 0)
10443 size += 4;
10444 }
721956f4 10445 }
84f5d08e
AM
10446 else if (info->emitrelocations)
10447 {
10448 stub_entry->stub_sec->reloc_count += 1;
10449 stub_entry->stub_sec->flags |= SEC_RELOC;
10450 }
721956f4
AM
10451 }
10452
eea6121a 10453 stub_entry->stub_sec->size += size;
b34976b6 10454 return TRUE;
721956f4
AM
10455}
10456
10457/* Set up various things so that we can make a list of input sections
10458 for each output section included in the link. Returns -1 on error,
cedb70c5 10459 0 when no stubs will be needed, and 1 on success. */
721956f4
AM
10460
10461int
927be08e
AM
10462ppc64_elf_setup_section_lists
10463 (struct bfd_link_info *info,
10464 asection *(*add_stub_section) (const char *, asection *),
10465 void (*layout_sections_again) (void))
721956f4
AM
10466{
10467 bfd *input_bfd;
734b6cf9 10468 int top_id, top_index, id;
721956f4 10469 asection *section;
734b6cf9 10470 asection **input_list;
721956f4
AM
10471 bfd_size_type amt;
10472 struct ppc_link_hash_table *htab = ppc_hash_table (info);
10473
4dfe6ac6
NC
10474 if (htab == NULL)
10475 return -1;
927be08e
AM
10476 /* Stash our params away. */
10477 htab->add_stub_section = add_stub_section;
10478 htab->layout_sections_again = layout_sections_again;
4c52953f 10479
4ce794b7 10480 if (htab->brlt == NULL)
721956f4
AM
10481 return 0;
10482
1e2f5b6e 10483 /* Find the top input section id. */
3d6f9012 10484 for (input_bfd = info->input_bfds, top_id = 3;
721956f4
AM
10485 input_bfd != NULL;
10486 input_bfd = input_bfd->link_next)
10487 {
721956f4
AM
10488 for (section = input_bfd->sections;
10489 section != NULL;
10490 section = section->next)
10491 {
10492 if (top_id < section->id)
10493 top_id = section->id;
10494 }
10495 }
721956f4 10496
8f3bab57 10497 htab->top_id = top_id;
721956f4 10498 amt = sizeof (struct map_stub) * (top_id + 1);
4ce794b7 10499 htab->stub_group = bfd_zmalloc (amt);
721956f4
AM
10500 if (htab->stub_group == NULL)
10501 return -1;
10502
3d6f9012
AM
10503 /* Set toc_off for com, und, abs and ind sections. */
10504 for (id = 0; id < 3; id++)
10505 htab->stub_group[id].toc_off = TOC_BASE_OFF;
721956f4 10506
734b6cf9
AM
10507 /* We can't use output_bfd->section_count here to find the top output
10508 section index as some sections may have been removed, and
8423293d 10509 strip_excluded_output_sections doesn't renumber the indices. */
927be08e 10510 for (section = info->output_bfd->sections, top_index = 0;
734b6cf9
AM
10511 section != NULL;
10512 section = section->next)
10513 {
10514 if (top_index < section->index)
10515 top_index = section->index;
10516 }
10517
10518 htab->top_index = top_index;
10519 amt = sizeof (asection *) * (top_index + 1);
4ce794b7 10520 input_list = bfd_zmalloc (amt);
734b6cf9
AM
10521 htab->input_list = input_list;
10522 if (input_list == NULL)
10523 return -1;
10524
721956f4
AM
10525 return 1;
10526}
10527
927be08e
AM
10528/* Set up for first pass at multitoc partitioning. */
10529
10530void
10531ppc64_elf_start_multitoc_partition (struct bfd_link_info *info)
10532{
10533 struct ppc_link_hash_table *htab = ppc_hash_table (info);
10534
10535 elf_gp (info->output_bfd) = ppc64_elf_toc (info->output_bfd);
10536 htab->toc_curr = elf_gp (info->output_bfd);
10537 htab->toc_bfd = NULL;
10538 htab->toc_first_sec = NULL;
10539}
10540
e717da7e
AM
10541/* The linker repeatedly calls this function for each TOC input section
10542 and linker generated GOT section. Group input bfds such that the toc
927be08e 10543 within a group is less than 64k in size. */
ad8e1ba5 10544
927be08e 10545bfd_boolean
4ce794b7 10546ppc64_elf_next_toc_section (struct bfd_link_info *info, asection *isec)
ad8e1ba5
AM
10547{
10548 struct ppc_link_hash_table *htab = ppc_hash_table (info);
d77c8a4b 10549 bfd_vma addr, off, limit;
ad8e1ba5 10550
4dfe6ac6
NC
10551 if (htab == NULL)
10552 return FALSE;
10553
927be08e 10554 if (!htab->second_toc_pass)
4c52953f 10555 {
927be08e 10556 /* Keep track of the first .toc or .got section for this input bfd. */
bf102f86
AM
10557 if (htab->toc_bfd != isec->owner)
10558 {
10559 htab->toc_bfd = isec->owner;
10560 htab->toc_first_sec = isec;
10561 }
927be08e 10562
bf102f86
AM
10563 addr = isec->output_offset + isec->output_section->vma;
10564 off = addr - htab->toc_curr;
d77c8a4b
AM
10565 limit = 0x80008000;
10566 if (ppc64_elf_tdata (isec->owner)->has_small_toc_reloc)
10567 limit = 0x10000;
10568 if (off + isec->size > limit)
bf102f86
AM
10569 {
10570 addr = (htab->toc_first_sec->output_offset
10571 + htab->toc_first_sec->output_section->vma);
10572 htab->toc_curr = addr;
10573 }
99877b66 10574
927be08e
AM
10575 /* toc_curr is the base address of this toc group. Set elf_gp
10576 for the input section to be the offset relative to the
10577 output toc base plus 0x8000. Making the input elf_gp an
10578 offset allows us to move the toc as a whole without
10579 recalculating input elf_gp. */
10580 off = htab->toc_curr - elf_gp (isec->output_section->owner);
10581 off += TOC_BASE_OFF;
10582
10583 /* Die if someone uses a linker script that doesn't keep input
10584 file .toc and .got together. */
10585 if (elf_gp (isec->owner) != 0
10586 && elf_gp (isec->owner) != off)
10587 return FALSE;
10588
10589 elf_gp (isec->owner) = off;
10590 return TRUE;
4c52953f 10591 }
927be08e
AM
10592
10593 /* During the second pass toc_first_sec points to the start of
10594 a toc group, and toc_curr is used to track the old elf_gp.
10595 We use toc_bfd to ensure we only look at each bfd once. */
10596 if (htab->toc_bfd == isec->owner)
10597 return TRUE;
10598 htab->toc_bfd = isec->owner;
10599
10600 if (htab->toc_first_sec == NULL
10601 || htab->toc_curr != elf_gp (isec->owner))
10602 {
10603 htab->toc_curr = elf_gp (isec->owner);
10604 htab->toc_first_sec = isec;
10605 }
10606 addr = (htab->toc_first_sec->output_offset
10607 + htab->toc_first_sec->output_section->vma);
10608 off = addr - elf_gp (isec->output_section->owner) + TOC_BASE_OFF;
10609 elf_gp (isec->owner) = off;
10610
10611 return TRUE;
ad8e1ba5
AM
10612}
10613
927be08e
AM
10614/* Called via elf_link_hash_traverse to merge GOT entries for global
10615 symbol H. */
10616
10617static bfd_boolean
10618merge_global_got (struct elf_link_hash_entry *h, void *inf ATTRIBUTE_UNUSED)
10619{
10620 if (h->root.type == bfd_link_hash_indirect)
10621 return TRUE;
10622
927be08e
AM
10623 merge_got_entries (&h->got.glist);
10624
10625 return TRUE;
10626}
10627
10628/* Called via elf_link_hash_traverse to allocate GOT entries for global
10629 symbol H. */
10630
10631static bfd_boolean
10632reallocate_got (struct elf_link_hash_entry *h, void *inf)
10633{
10634 struct got_entry *gent;
10635
10636 if (h->root.type == bfd_link_hash_indirect)
10637 return TRUE;
10638
927be08e
AM
10639 for (gent = h->got.glist; gent != NULL; gent = gent->next)
10640 if (!gent->is_indirect)
10641 allocate_got (h, (struct bfd_link_info *) inf, gent);
10642 return TRUE;
10643}
10644
10645/* Called on the first multitoc pass after the last call to
10646 ppc64_elf_next_toc_section. This function removes duplicate GOT
10647 entries. */
10648
10649bfd_boolean
10650ppc64_elf_layout_multitoc (struct bfd_link_info *info)
ad8e1ba5
AM
10651{
10652 struct ppc_link_hash_table *htab = ppc_hash_table (info);
927be08e
AM
10653 struct bfd *ibfd, *ibfd2;
10654 bfd_boolean done_something;
10655
10656 htab->multi_toc_needed = htab->toc_curr != elf_gp (info->output_bfd);
ad8e1ba5 10657
7865406b
AM
10658 if (!htab->do_multi_toc)
10659 return FALSE;
10660
d0fae19d 10661 /* Merge global sym got entries within a toc group. */
927be08e
AM
10662 elf_link_hash_traverse (&htab->elf, merge_global_got, info);
10663
10664 /* And tlsld_got. */
10665 for (ibfd = info->input_bfds; ibfd != NULL; ibfd = ibfd->link_next)
10666 {
10667 struct got_entry *ent, *ent2;
10668
10669 if (!is_ppc64_elf (ibfd))
10670 continue;
10671
10672 ent = ppc64_tlsld_got (ibfd);
10673 if (!ent->is_indirect
10674 && ent->got.offset != (bfd_vma) -1)
10675 {
10676 for (ibfd2 = ibfd->link_next; ibfd2 != NULL; ibfd2 = ibfd2->link_next)
10677 {
10678 if (!is_ppc64_elf (ibfd2))
10679 continue;
10680
10681 ent2 = ppc64_tlsld_got (ibfd2);
10682 if (!ent2->is_indirect
10683 && ent2->got.offset != (bfd_vma) -1
10684 && elf_gp (ibfd2) == elf_gp (ibfd))
10685 {
10686 ent2->is_indirect = TRUE;
10687 ent2->got.ent = ent;
10688 }
10689 }
10690 }
10691 }
10692
10693 /* Zap sizes of got sections. */
10694 htab->reliplt->rawsize = htab->reliplt->size;
10695 htab->reliplt->size -= htab->got_reli_size;
10696 htab->got_reli_size = 0;
10697
10698 for (ibfd = info->input_bfds; ibfd != NULL; ibfd = ibfd->link_next)
10699 {
10700 asection *got, *relgot;
10701
10702 if (!is_ppc64_elf (ibfd))
10703 continue;
10704
10705 got = ppc64_elf_tdata (ibfd)->got;
10706 if (got != NULL)
10707 {
10708 got->rawsize = got->size;
10709 got->size = 0;
10710 relgot = ppc64_elf_tdata (ibfd)->relgot;
10711 relgot->rawsize = relgot->size;
10712 relgot->size = 0;
10713 }
10714 }
10715
10716 /* Now reallocate the got, local syms first. We don't need to
10717 allocate section contents again since we never increase size. */
10718 for (ibfd = info->input_bfds; ibfd != NULL; ibfd = ibfd->link_next)
10719 {
10720 struct got_entry **lgot_ents;
10721 struct got_entry **end_lgot_ents;
10722 struct plt_entry **local_plt;
10723 struct plt_entry **end_local_plt;
f961d9dd 10724 unsigned char *lgot_masks;
927be08e
AM
10725 bfd_size_type locsymcount;
10726 Elf_Internal_Shdr *symtab_hdr;
10727 asection *s, *srel;
10728
10729 if (!is_ppc64_elf (ibfd))
10730 continue;
10731
10732 lgot_ents = elf_local_got_ents (ibfd);
10733 if (!lgot_ents)
10734 continue;
10735
10736 symtab_hdr = &elf_symtab_hdr (ibfd);
10737 locsymcount = symtab_hdr->sh_info;
10738 end_lgot_ents = lgot_ents + locsymcount;
10739 local_plt = (struct plt_entry **) end_lgot_ents;
10740 end_local_plt = local_plt + locsymcount;
f961d9dd 10741 lgot_masks = (unsigned char *) end_local_plt;
927be08e
AM
10742 s = ppc64_elf_tdata (ibfd)->got;
10743 srel = ppc64_elf_tdata (ibfd)->relgot;
10744 for (; lgot_ents < end_lgot_ents; ++lgot_ents, ++lgot_masks)
10745 {
10746 struct got_entry *ent;
10747
10748 for (ent = *lgot_ents; ent != NULL; ent = ent->next)
d0fae19d
AM
10749 {
10750 unsigned int num = 1;
10751 ent->got.offset = s->size;
10752 if ((ent->tls_type & *lgot_masks & TLS_GD) != 0)
10753 num = 2;
10754 s->size += num * 8;
10755 if (info->shared)
10756 srel->size += num * sizeof (Elf64_External_Rela);
10757 else if ((*lgot_masks & PLT_IFUNC) != 0)
10758 {
10759 htab->reliplt->size
10760 += num * sizeof (Elf64_External_Rela);
10761 htab->got_reli_size
10762 += num * sizeof (Elf64_External_Rela);
10763 }
10764 }
927be08e
AM
10765 }
10766 }
10767
10768 elf_link_hash_traverse (&htab->elf, reallocate_got, info);
10769
10770 for (ibfd = info->input_bfds; ibfd != NULL; ibfd = ibfd->link_next)
10771 {
10772 struct got_entry *ent;
10773
10774 if (!is_ppc64_elf (ibfd))
10775 continue;
10776
10777 ent = ppc64_tlsld_got (ibfd);
10778 if (!ent->is_indirect
10779 && ent->got.offset != (bfd_vma) -1)
10780 {
10781 asection *s = ppc64_elf_tdata (ibfd)->got;
10782 ent->got.offset = s->size;
10783 s->size += 16;
10784 if (info->shared)
10785 {
10786 asection *srel = ppc64_elf_tdata (ibfd)->relgot;
10787 srel->size += sizeof (Elf64_External_Rela);
10788 }
10789 }
10790 }
10791
10792 done_something = htab->reliplt->rawsize != htab->reliplt->size;
10793 if (!done_something)
10794 for (ibfd = info->input_bfds; ibfd != NULL; ibfd = ibfd->link_next)
10795 {
10796 asection *got;
10797
10798 if (!is_ppc64_elf (ibfd))
10799 continue;
10800
10801 got = ppc64_elf_tdata (ibfd)->got;
10802 if (got != NULL)
10803 {
10804 done_something = got->rawsize != got->size;
10805 if (done_something)
10806 break;
10807 }
10808 }
10809
10810 if (done_something)
10811 (*htab->layout_sections_again) ();
10812
10813 /* Set up for second pass over toc sections to recalculate elf_gp
10814 on input sections. */
10815 htab->toc_bfd = NULL;
10816 htab->toc_first_sec = NULL;
10817 htab->second_toc_pass = TRUE;
10818 return done_something;
10819}
10820
10821/* Called after second pass of multitoc partitioning. */
10822
10823void
10824ppc64_elf_finish_multitoc_partition (struct bfd_link_info *info)
10825{
10826 struct ppc_link_hash_table *htab = ppc_hash_table (info);
10827
10828 /* After the second pass, toc_curr tracks the TOC offset used
10829 for code sections below in ppc64_elf_next_input_section. */
3d6f9012 10830 htab->toc_curr = TOC_BASE_OFF;
ad8e1ba5
AM
10831}
10832
9b5ecbd0
AM
10833/* No toc references were found in ISEC. If the code in ISEC makes no
10834 calls, then there's no need to use toc adjusting stubs when branching
10835 into ISEC. Actually, indirect calls from ISEC are OK as they will
4c52953f
AM
10836 load r2. Returns -1 on error, 0 for no stub needed, 1 for stub
10837 needed, and 2 if a cyclical call-graph was found but no other reason
10838 for a stub was detected. If called from the top level, a return of
10839 2 means the same as a return of 0. */
9b5ecbd0
AM
10840
10841static int
4ce794b7 10842toc_adjusting_stub_needed (struct bfd_link_info *info, asection *isec)
9b5ecbd0 10843{
9b5ecbd0 10844 int ret;
70cc837d
AM
10845
10846 /* Mark this section as checked. */
10847 isec->call_check_done = 1;
9b5ecbd0 10848
772119ce
AM
10849 /* We know none of our code bearing sections will need toc stubs. */
10850 if ((isec->flags & SEC_LINKER_CREATED) != 0)
10851 return 0;
10852
eea6121a 10853 if (isec->size == 0)
082c50f8
AM
10854 return 0;
10855
4c52953f
AM
10856 if (isec->output_section == NULL)
10857 return 0;
10858
4c52953f 10859 ret = 0;
70cc837d 10860 if (isec->reloc_count != 0)
9b5ecbd0 10861 {
70cc837d
AM
10862 Elf_Internal_Rela *relstart, *rel;
10863 Elf_Internal_Sym *local_syms;
10864 struct ppc_link_hash_table *htab;
2917689a 10865
70cc837d
AM
10866 relstart = _bfd_elf_link_read_relocs (isec->owner, isec, NULL, NULL,
10867 info->keep_memory);
10868 if (relstart == NULL)
10869 return -1;
90aecf7a 10870
70cc837d
AM
10871 /* Look for branches to outside of this section. */
10872 local_syms = NULL;
10873 htab = ppc_hash_table (info);
10874 if (htab == NULL)
10875 return -1;
4c52953f 10876
70cc837d 10877 for (rel = relstart; rel < relstart + isec->reloc_count; ++rel)
4c52953f 10878 {
70cc837d
AM
10879 enum elf_ppc64_reloc_type r_type;
10880 unsigned long r_symndx;
10881 struct elf_link_hash_entry *h;
10882 struct ppc_link_hash_entry *eh;
10883 Elf_Internal_Sym *sym;
10884 asection *sym_sec;
10885 struct _opd_sec_data *opd;
10886 bfd_vma sym_value;
10887 bfd_vma dest;
10888
10889 r_type = ELF64_R_TYPE (rel->r_info);
10890 if (r_type != R_PPC64_REL24
10891 && r_type != R_PPC64_REL14
10892 && r_type != R_PPC64_REL14_BRTAKEN
10893 && r_type != R_PPC64_REL14_BRNTAKEN)
10894 continue;
4c52953f 10895
70cc837d
AM
10896 r_symndx = ELF64_R_SYM (rel->r_info);
10897 if (!get_sym_h (&h, &sym, &sym_sec, NULL, &local_syms, r_symndx,
10898 isec->owner))
4c52953f 10899 {
70cc837d
AM
10900 ret = -1;
10901 break;
10902 }
4c52953f 10903
70cc837d
AM
10904 /* Calls to dynamic lib functions go through a plt call stub
10905 that uses r2. */
10906 eh = (struct ppc_link_hash_entry *) h;
10907 if (eh != NULL
10908 && (eh->elf.plt.plist != NULL
10909 || (eh->oh != NULL
10910 && ppc_follow_link (eh->oh)->elf.plt.plist != NULL)))
10911 {
10912 ret = 1;
10913 break;
4c52953f
AM
10914 }
10915
70cc837d
AM
10916 if (sym_sec == NULL)
10917 /* Ignore other undefined symbols. */
4c52953f 10918 continue;
4c52953f 10919
70cc837d
AM
10920 /* Assume branches to other sections not included in the
10921 link need stubs too, to cover -R and absolute syms. */
10922 if (sym_sec->output_section == NULL)
10923 {
10924 ret = 1;
10925 break;
10926 }
4c52953f 10927
70cc837d
AM
10928 if (h == NULL)
10929 sym_value = sym->st_value;
10930 else
10931 {
10932 if (h->root.type != bfd_link_hash_defined
10933 && h->root.type != bfd_link_hash_defweak)
10934 abort ();
10935 sym_value = h->root.u.def.value;
10936 }
10937 sym_value += rel->r_addend;
4c52953f 10938
70cc837d
AM
10939 /* If this branch reloc uses an opd sym, find the code section. */
10940 opd = get_opd_info (sym_sec);
10941 if (opd != NULL)
10942 {
10943 if (h == NULL && opd->adjust != NULL)
10944 {
10945 long adjust;
4c52953f 10946
70cc837d
AM
10947 adjust = opd->adjust[sym->st_value / 8];
10948 if (adjust == -1)
10949 /* Assume deleted functions won't ever be called. */
10950 continue;
10951 sym_value += adjust;
10952 }
4c52953f 10953
aef36ac1
AM
10954 dest = opd_entry_value (sym_sec, sym_value,
10955 &sym_sec, NULL, FALSE);
70cc837d
AM
10956 if (dest == (bfd_vma) -1)
10957 continue;
10958 }
10959 else
10960 dest = (sym_value
10961 + sym_sec->output_offset
10962 + sym_sec->output_section->vma);
4c52953f 10963
70cc837d
AM
10964 /* Ignore branch to self. */
10965 if (sym_sec == isec)
10966 continue;
4c52953f 10967
70cc837d
AM
10968 /* If the called function uses the toc, we need a stub. */
10969 if (sym_sec->has_toc_reloc
10970 || sym_sec->makes_toc_func_call)
4c52953f 10971 {
70cc837d 10972 ret = 1;
4c52953f
AM
10973 break;
10974 }
70cc837d
AM
10975
10976 /* Assume any branch that needs a long branch stub might in fact
10977 need a plt_branch stub. A plt_branch stub uses r2. */
10978 else if (dest - (isec->output_offset
10979 + isec->output_section->vma
10980 + rel->r_offset) + (1 << 25) >= (2 << 25))
4c52953f 10981 {
70cc837d
AM
10982 ret = 1;
10983 break;
10984 }
10985
10986 /* If calling back to a section in the process of being
10987 tested, we can't say for sure that no toc adjusting stubs
10988 are needed, so don't return zero. */
10989 else if (sym_sec->call_check_in_progress)
10990 ret = 2;
10991
10992 /* Branches to another section that itself doesn't have any TOC
10993 references are OK. Recursively call ourselves to check. */
10994 else if (!sym_sec->call_check_done)
10995 {
10996 int recur;
10997
10998 /* Mark current section as indeterminate, so that other
10999 sections that call back to current won't be marked as
11000 known. */
11001 isec->call_check_in_progress = 1;
11002 recur = toc_adjusting_stub_needed (info, sym_sec);
11003 isec->call_check_in_progress = 0;
11004
4c52953f
AM
11005 if (recur != 0)
11006 {
70cc837d
AM
11007 ret = recur;
11008 if (recur != 2)
11009 break;
4c52953f
AM
11010 }
11011 }
4c52953f 11012 }
70cc837d
AM
11013
11014 if (local_syms != NULL
11015 && (elf_symtab_hdr (isec->owner).contents
11016 != (unsigned char *) local_syms))
11017 free (local_syms);
11018 if (elf_section_data (isec)->relocs != relstart)
11019 free (relstart);
9b5ecbd0
AM
11020 }
11021
70cc837d
AM
11022 if ((ret & 1) == 0
11023 && isec->map_head.s != NULL
11024 && (strcmp (isec->output_section->name, ".init") == 0
11025 || strcmp (isec->output_section->name, ".fini") == 0))
11026 {
11027 if (isec->map_head.s->has_toc_reloc
11028 || isec->map_head.s->makes_toc_func_call)
11029 ret = 1;
11030 else if (!isec->map_head.s->call_check_done)
11031 {
11032 int recur;
11033 isec->call_check_in_progress = 1;
11034 recur = toc_adjusting_stub_needed (info, isec->map_head.s);
11035 isec->call_check_in_progress = 0;
11036 if (recur != 0)
11037 ret = recur;
11038 }
11039 }
11040
11041 if (ret == 1)
11042 isec->makes_toc_func_call = 1;
4c52953f 11043
9b5ecbd0
AM
11044 return ret;
11045}
11046
721956f4
AM
11047/* The linker repeatedly calls this function for each input section,
11048 in the order that input sections are linked into output sections.
11049 Build lists of input sections to determine groupings between which
11050 we may insert linker stubs. */
11051
9b5ecbd0 11052bfd_boolean
4ce794b7 11053ppc64_elf_next_input_section (struct bfd_link_info *info, asection *isec)
721956f4
AM
11054{
11055 struct ppc_link_hash_table *htab = ppc_hash_table (info);
11056
4dfe6ac6
NC
11057 if (htab == NULL)
11058 return FALSE;
11059
734b6cf9
AM
11060 if ((isec->output_section->flags & SEC_CODE) != 0
11061 && isec->output_section->index <= htab->top_index)
721956f4 11062 {
734b6cf9 11063 asection **list = htab->input_list + isec->output_section->index;
3d6f9012 11064 /* Steal the link_sec pointer for our list. */
721956f4 11065#define PREV_SEC(sec) (htab->stub_group[(sec)->id].link_sec)
3d6f9012
AM
11066 /* This happens to make the list in reverse order,
11067 which is what we want. */
734b6cf9
AM
11068 PREV_SEC (isec) = *list;
11069 *list = isec;
721956f4 11070 }
ad8e1ba5 11071
4c52953f 11072 if (htab->multi_toc_needed)
9b5ecbd0 11073 {
4c52953f
AM
11074 /* If a code section has a function that uses the TOC then we need
11075 to use the right TOC (obviously). Also, make sure that .opd gets
11076 the correct TOC value for R_PPC64_TOC relocs that don't have or
f94498ff
AM
11077 can't find their function symbol (shouldn't ever happen now).
11078 Also specially treat .fixup for the linux kernel. .fixup
11079 contains branches, but only back to the function that hit an
11080 exception. */
11081 if (isec->has_toc_reloc
11082 || (isec->flags & SEC_CODE) == 0
11083 || strcmp (isec->name, ".fixup") == 0)
4c52953f
AM
11084 {
11085 if (elf_gp (isec->owner) != 0)
11086 htab->toc_curr = elf_gp (isec->owner);
11087 }
6683a28d
AM
11088 else
11089 {
11090 if (!isec->call_check_done
11091 && toc_adjusting_stub_needed (info, isec) < 0)
11092 return FALSE;
11093 /* If we make a local call from this section, ie. a branch
11094 without a following nop, then we have no place to put a
11095 toc restoring insn. We must use the same toc group as
11096 the callee.
11097 Testing makes_toc_func_call actually tests for *any*
11098 calls to functions that need a good toc pointer. A more
11099 precise test would be better, as this one will set
11100 incorrect values for pasted .init/.fini fragments.
11101 (Fixed later in check_pasted_section.) */
11102 if (isec->makes_toc_func_call
11103 && elf_gp (isec->owner) != 0)
11104 htab->toc_curr = elf_gp (isec->owner);
11105 }
9b5ecbd0 11106 }
ad8e1ba5
AM
11107
11108 /* Functions that don't use the TOC can belong in any TOC group.
6683a28d 11109 Use the last TOC base. */
ad8e1ba5 11110 htab->stub_group[isec->id].toc_off = htab->toc_curr;
9b5ecbd0 11111 return TRUE;
721956f4
AM
11112}
11113
70cc837d
AM
11114/* Check that all .init and .fini sections use the same toc, if they
11115 have toc relocs. */
11116
11117static bfd_boolean
11118check_pasted_section (struct bfd_link_info *info, const char *name)
11119{
11120 asection *o = bfd_get_section_by_name (info->output_bfd, name);
11121
11122 if (o != NULL)
11123 {
11124 struct ppc_link_hash_table *htab = ppc_hash_table (info);
11125 bfd_vma toc_off = 0;
11126 asection *i;
11127
11128 for (i = o->map_head.s; i != NULL; i = i->map_head.s)
11129 if (i->has_toc_reloc)
11130 {
11131 if (toc_off == 0)
11132 toc_off = htab->stub_group[i->id].toc_off;
11133 else if (toc_off != htab->stub_group[i->id].toc_off)
11134 return FALSE;
11135 }
6683a28d
AM
11136
11137 if (toc_off == 0)
11138 for (i = o->map_head.s; i != NULL; i = i->map_head.s)
11139 if (i->makes_toc_func_call)
11140 {
11141 toc_off = htab->stub_group[i->id].toc_off;
11142 break;
11143 }
11144
70cc837d
AM
11145 /* Make sure the whole pasted function uses the same toc offset. */
11146 if (toc_off != 0)
11147 for (i = o->map_head.s; i != NULL; i = i->map_head.s)
11148 htab->stub_group[i->id].toc_off = toc_off;
11149 }
11150 return TRUE;
11151}
11152
11153bfd_boolean
11154ppc64_elf_check_init_fini (struct bfd_link_info *info)
11155{
11156 return (check_pasted_section (info, ".init")
11157 & check_pasted_section (info, ".fini"));
11158}
11159
721956f4
AM
11160/* See whether we can group stub sections together. Grouping stub
11161 sections may result in fewer stubs. More importantly, we need to
11162 put all .init* and .fini* stubs at the beginning of the .init or
11163 .fini output sections respectively, because glibc splits the
11164 _init and _fini functions into multiple parts. Putting a stub in
11165 the middle of a function is not a good idea. */
11166
11167static void
4ce794b7
AM
11168group_sections (struct ppc_link_hash_table *htab,
11169 bfd_size_type stub_group_size,
11170 bfd_boolean stubs_always_before_branch)
721956f4 11171{
7c8fe5c4
AM
11172 asection **list;
11173 bfd_size_type stub14_group_size;
11174 bfd_boolean suppress_size_errors;
11175
11176 suppress_size_errors = FALSE;
11177 stub14_group_size = stub_group_size;
11178 if (stub_group_size == 1)
11179 {
11180 /* Default values. */
11181 if (stubs_always_before_branch)
11182 {
11183 stub_group_size = 0x1e00000;
11184 stub14_group_size = 0x7800;
11185 }
11186 else
11187 {
11188 stub_group_size = 0x1c00000;
11189 stub14_group_size = 0x7000;
11190 }
11191 suppress_size_errors = TRUE;
11192 }
11193
11194 list = htab->input_list + htab->top_index;
734b6cf9 11195 do
721956f4 11196 {
734b6cf9
AM
11197 asection *tail = *list;
11198 while (tail != NULL)
721956f4 11199 {
734b6cf9
AM
11200 asection *curr;
11201 asection *prev;
11202 bfd_size_type total;
11203 bfd_boolean big_sec;
11204 bfd_vma curr_toc;
11205
11206 curr = tail;
eea6121a 11207 total = tail->size;
6bee8834
AM
11208 big_sec = total > (ppc64_elf_section_data (tail) != NULL
11209 && ppc64_elf_section_data (tail)->has_14bit_branch
7c8fe5c4
AM
11210 ? stub14_group_size : stub_group_size);
11211 if (big_sec && !suppress_size_errors)
5c3dead3
AM
11212 (*_bfd_error_handler) (_("%B section %A exceeds stub group size"),
11213 tail->owner, tail);
734b6cf9
AM
11214 curr_toc = htab->stub_group[tail->id].toc_off;
11215
11216 while ((prev = PREV_SEC (curr)) != NULL
11217 && ((total += curr->output_offset - prev->output_offset)
6bee8834
AM
11218 < (ppc64_elf_section_data (prev) != NULL
11219 && ppc64_elf_section_data (prev)->has_14bit_branch
7c8fe5c4 11220 ? stub14_group_size : stub_group_size))
ad8e1ba5 11221 && htab->stub_group[prev->id].toc_off == curr_toc)
734b6cf9
AM
11222 curr = prev;
11223
11224 /* OK, the size from the start of CURR to the end is less
11225 than stub_group_size and thus can be handled by one stub
11226 section. (or the tail section is itself larger than
11227 stub_group_size, in which case we may be toast.) We
11228 should really be keeping track of the total size of stubs
11229 added here, as stubs contribute to the final output
11230 section size. That's a little tricky, and this way will
11231 only break if stubs added make the total size more than
11232 2^25, ie. for the default stub_group_size, if stubs total
11233 more than 2097152 bytes, or nearly 75000 plt call stubs. */
11234 do
721956f4
AM
11235 {
11236 prev = PREV_SEC (tail);
734b6cf9 11237 /* Set up this stub group. */
721956f4
AM
11238 htab->stub_group[tail->id].link_sec = curr;
11239 }
734b6cf9
AM
11240 while (tail != curr && (tail = prev) != NULL);
11241
11242 /* But wait, there's more! Input sections up to stub_group_size
11243 bytes before the stub section can be handled by it too.
11244 Don't do this if we have a really large section after the
11245 stubs, as adding more stubs increases the chance that
11246 branches may not reach into the stub section. */
11247 if (!stubs_always_before_branch && !big_sec)
11248 {
11249 total = 0;
11250 while (prev != NULL
11251 && ((total += tail->output_offset - prev->output_offset)
6bee8834
AM
11252 < (ppc64_elf_section_data (prev) != NULL
11253 && ppc64_elf_section_data (prev)->has_14bit_branch
7c8fe5c4 11254 ? stub14_group_size : stub_group_size))
734b6cf9
AM
11255 && htab->stub_group[prev->id].toc_off == curr_toc)
11256 {
11257 tail = prev;
11258 prev = PREV_SEC (tail);
11259 htab->stub_group[tail->id].link_sec = curr;
11260 }
11261 }
11262 tail = prev;
721956f4
AM
11263 }
11264 }
734b6cf9
AM
11265 while (list-- != htab->input_list);
11266 free (htab->input_list);
721956f4
AM
11267#undef PREV_SEC
11268}
11269
58d180e8
AM
11270static const unsigned char glink_eh_frame_cie[] =
11271{
11272 0, 0, 0, 16, /* length. */
11273 0, 0, 0, 0, /* id. */
11274 1, /* CIE version. */
11275 'z', 'R', 0, /* Augmentation string. */
11276 4, /* Code alignment. */
11277 0x78, /* Data alignment. */
11278 65, /* RA reg. */
11279 1, /* Augmentation size. */
11280 DW_EH_PE_pcrel | DW_EH_PE_sdata4, /* FDE encoding. */
11281 DW_CFA_def_cfa, 1, 0 /* def_cfa: r1 offset 0. */
11282};
11283
d969d15f
AM
11284/* Stripping output sections is normally done before dynamic section
11285 symbols have been allocated. This function is called later, and
11286 handles cases like htab->brlt which is mapped to its own output
11287 section. */
11288
11289static void
11290maybe_strip_output (struct bfd_link_info *info, asection *isec)
11291{
11292 if (isec->size == 0
11293 && isec->output_section->size == 0
11294 && !bfd_section_removed_from_list (info->output_bfd,
11295 isec->output_section)
11296 && elf_section_data (isec->output_section)->dynindx == 0)
11297 {
11298 isec->output_section->flags |= SEC_EXCLUDE;
11299 bfd_section_list_remove (info->output_bfd, isec->output_section);
11300 info->output_bfd->section_count--;
11301 }
11302}
11303
721956f4
AM
11304/* Determine and set the size of the stub section for a final link.
11305
11306 The basic idea here is to examine all the relocations looking for
11307 PC-relative calls to a target that is unreachable with a "bl"
11308 instruction. */
11309
b34976b6 11310bfd_boolean
9df0ef5f 11311ppc64_elf_size_stubs (struct bfd_link_info *info, bfd_signed_vma group_size,
794e51c0
AM
11312 bfd_boolean plt_static_chain, int plt_thread_safe,
11313 int plt_stub_align)
721956f4
AM
11314{
11315 bfd_size_type stub_group_size;
b34976b6 11316 bfd_boolean stubs_always_before_branch;
721956f4
AM
11317 struct ppc_link_hash_table *htab = ppc_hash_table (info);
11318
4dfe6ac6
NC
11319 if (htab == NULL)
11320 return FALSE;
11321
9df0ef5f 11322 htab->plt_static_chain = plt_static_chain;
794e51c0
AM
11323 htab->plt_stub_align = plt_stub_align;
11324 if (plt_thread_safe == -1)
11325 {
11326 const char *const thread_starter[] =
11327 {
11328 "pthread_create",
11329 /* libstdc++ */
11330 "_ZNSt6thread15_M_start_threadESt10shared_ptrINS_10_Impl_baseEE",
11331 /* librt */
11332 "aio_init", "aio_read", "aio_write", "aio_fsync", "lio_listio",
11333 "mq_notify", "create_timer",
11334 /* libanl */
11335 "getaddrinfo_a",
11336 /* libgomp */
11337 "GOMP_parallel_start",
11338 "GOMP_parallel_loop_static_start",
11339 "GOMP_parallel_loop_dynamic_start",
11340 "GOMP_parallel_loop_guided_start",
11341 "GOMP_parallel_loop_runtime_start",
11342 "GOMP_parallel_sections_start",
11343 };
11344 unsigned i;
11345
11346 for (i = 0; i < sizeof (thread_starter)/ sizeof (thread_starter[0]); i++)
11347 {
11348 struct elf_link_hash_entry *h;
11349 h = elf_link_hash_lookup (&htab->elf, thread_starter[i],
11350 FALSE, FALSE, TRUE);
11351 plt_thread_safe = h != NULL && h->ref_regular;
11352 if (plt_thread_safe)
11353 break;
11354 }
11355 }
11356 htab->plt_thread_safe = plt_thread_safe;
721956f4
AM
11357 stubs_always_before_branch = group_size < 0;
11358 if (group_size < 0)
11359 stub_group_size = -group_size;
11360 else
11361 stub_group_size = group_size;
721956f4
AM
11362
11363 group_sections (htab, stub_group_size, stubs_always_before_branch);
11364
721956f4
AM
11365 while (1)
11366 {
11367 bfd *input_bfd;
11368 unsigned int bfd_indx;
11369 asection *stub_sec;
721956f4
AM
11370
11371 htab->stub_iteration += 1;
721956f4
AM
11372
11373 for (input_bfd = info->input_bfds, bfd_indx = 0;
11374 input_bfd != NULL;
11375 input_bfd = input_bfd->link_next, bfd_indx++)
11376 {
11377 Elf_Internal_Shdr *symtab_hdr;
11378 asection *section;
6cdc0ccc 11379 Elf_Internal_Sym *local_syms = NULL;
721956f4 11380
0c8d6e5c 11381 if (!is_ppc64_elf (input_bfd))
67f93c31
AM
11382 continue;
11383
721956f4 11384 /* We'll need the symbol table in a second. */
0ffa91dd 11385 symtab_hdr = &elf_symtab_hdr (input_bfd);
721956f4
AM
11386 if (symtab_hdr->sh_info == 0)
11387 continue;
11388
721956f4
AM
11389 /* Walk over each section attached to the input bfd. */
11390 for (section = input_bfd->sections;
11391 section != NULL;
11392 section = section->next)
11393 {
721956f4 11394 Elf_Internal_Rela *internal_relocs, *irelaend, *irela;
721956f4
AM
11395
11396 /* If there aren't any relocs, then there's nothing more
11397 to do. */
11398 if ((section->flags & SEC_RELOC) == 0
12c0f757
AM
11399 || (section->flags & SEC_ALLOC) == 0
11400 || (section->flags & SEC_LOAD) == 0
11401 || (section->flags & SEC_CODE) == 0
721956f4
AM
11402 || section->reloc_count == 0)
11403 continue;
11404
11405 /* If this section is a link-once section that will be
11406 discarded, then don't create any stubs. */
11407 if (section->output_section == NULL
927be08e 11408 || section->output_section->owner != info->output_bfd)
721956f4
AM
11409 continue;
11410
1e2f5b6e
AM
11411 /* Get the relocs. */
11412 internal_relocs
4ce794b7 11413 = _bfd_elf_link_read_relocs (input_bfd, section, NULL, NULL,
45d6a902 11414 info->keep_memory);
721956f4 11415 if (internal_relocs == NULL)
1e2f5b6e 11416 goto error_ret_free_local;
721956f4
AM
11417
11418 /* Now examine each relocation. */
11419 irela = internal_relocs;
11420 irelaend = irela + section->reloc_count;
11421 for (; irela < irelaend; irela++)
11422 {
4ce794b7
AM
11423 enum elf_ppc64_reloc_type r_type;
11424 unsigned int r_indx;
721956f4
AM
11425 enum ppc_stub_type stub_type;
11426 struct ppc_stub_hash_entry *stub_entry;
8387904d 11427 asection *sym_sec, *code_sec;
e054468f 11428 bfd_vma sym_value, code_value;
721956f4 11429 bfd_vma destination;
8843416a 11430 bfd_boolean ok_dest;
721956f4 11431 struct ppc_link_hash_entry *hash;
8387904d 11432 struct ppc_link_hash_entry *fdh;
411e1bfb
AM
11433 struct elf_link_hash_entry *h;
11434 Elf_Internal_Sym *sym;
721956f4
AM
11435 char *stub_name;
11436 const asection *id_sec;
74f0fb50 11437 struct _opd_sec_data *opd;
e054468f 11438 struct plt_entry *plt_ent;
721956f4
AM
11439
11440 r_type = ELF64_R_TYPE (irela->r_info);
11441 r_indx = ELF64_R_SYM (irela->r_info);
11442
4ce794b7 11443 if (r_type >= R_PPC64_max)
721956f4
AM
11444 {
11445 bfd_set_error (bfd_error_bad_value);
6cdc0ccc 11446 goto error_ret_free_internal;
721956f4
AM
11447 }
11448
11449 /* Only look for stubs on branch instructions. */
4ce794b7
AM
11450 if (r_type != R_PPC64_REL24
11451 && r_type != R_PPC64_REL14
11452 && r_type != R_PPC64_REL14_BRTAKEN
11453 && r_type != R_PPC64_REL14_BRNTAKEN)
721956f4
AM
11454 continue;
11455
11456 /* Now determine the call target, its name, value,
11457 section. */
411e1bfb
AM
11458 if (!get_sym_h (&h, &sym, &sym_sec, NULL, &local_syms,
11459 r_indx, input_bfd))
11460 goto error_ret_free_internal;
11461 hash = (struct ppc_link_hash_entry *) h;
11462
8843416a 11463 ok_dest = FALSE;
8387904d 11464 fdh = NULL;
7fe2b9a6 11465 sym_value = 0;
411e1bfb 11466 if (hash == NULL)
721956f4 11467 {
411e1bfb 11468 sym_value = sym->st_value;
8843416a 11469 ok_dest = TRUE;
721956f4 11470 }
7fe2b9a6
AM
11471 else if (hash->elf.root.type == bfd_link_hash_defined
11472 || hash->elf.root.type == bfd_link_hash_defweak)
11473 {
11474 sym_value = hash->elf.root.u.def.value;
11475 if (sym_sec->output_section != NULL)
11476 ok_dest = TRUE;
11477 }
11478 else if (hash->elf.root.type == bfd_link_hash_undefweak
11479 || hash->elf.root.type == bfd_link_hash_undefined)
721956f4 11480 {
99877b66 11481 /* Recognise an old ABI func code entry sym, and
7fe2b9a6
AM
11482 use the func descriptor sym instead if it is
11483 defined. */
ceb1f1ef 11484 if (hash->elf.root.root.string[0] == '.'
b31867b6 11485 && (fdh = lookup_fdh (hash, htab)) != NULL)
8387904d 11486 {
8387904d
AM
11487 if (fdh->elf.root.type == bfd_link_hash_defined
11488 || fdh->elf.root.type == bfd_link_hash_defweak)
11489 {
11490 sym_sec = fdh->elf.root.u.def.section;
11491 sym_value = fdh->elf.root.u.def.value;
11492 if (sym_sec->output_section != NULL)
11493 ok_dest = TRUE;
11494 }
99877b66
AM
11495 else
11496 fdh = NULL;
8387904d 11497 }
7fe2b9a6
AM
11498 }
11499 else
11500 {
11501 bfd_set_error (bfd_error_bad_value);
11502 goto error_ret_free_internal;
721956f4
AM
11503 }
11504
8843416a
AM
11505 destination = 0;
11506 if (ok_dest)
11507 {
11508 sym_value += irela->r_addend;
11509 destination = (sym_value
11510 + sym_sec->output_offset
11511 + sym_sec->output_section->vma);
11512 }
11513
8387904d 11514 code_sec = sym_sec;
e054468f 11515 code_value = sym_value;
74f0fb50
AM
11516 opd = get_opd_info (sym_sec);
11517 if (opd != NULL)
8387904d
AM
11518 {
11519 bfd_vma dest;
11520
74f0fb50 11521 if (hash == NULL && opd->adjust != NULL)
8387904d 11522 {
74f0fb50 11523 long adjust = opd->adjust[sym_value / 8];
8387904d
AM
11524 if (adjust == -1)
11525 continue;
e054468f 11526 code_value += adjust;
8387904d
AM
11527 sym_value += adjust;
11528 }
11529 dest = opd_entry_value (sym_sec, sym_value,
aef36ac1 11530 &code_sec, &code_value, FALSE);
8387904d
AM
11531 if (dest != (bfd_vma) -1)
11532 {
11533 destination = dest;
11534 if (fdh != NULL)
11535 {
11536 /* Fixup old ABI sym to point at code
11537 entry. */
99877b66 11538 hash->elf.root.type = bfd_link_hash_defweak;
8387904d 11539 hash->elf.root.u.def.section = code_sec;
e054468f 11540 hash->elf.root.u.def.value = code_value;
8387904d
AM
11541 }
11542 }
11543 }
11544
721956f4 11545 /* Determine what (if any) linker stub is needed. */
e054468f 11546 plt_ent = NULL;
721956f4 11547 stub_type = ppc_type_of_stub (section, irela, &hash,
e054468f 11548 &plt_ent, destination);
ad8e1ba5
AM
11549
11550 if (stub_type != ppc_stub_plt_call)
11551 {
11552 /* Check whether we need a TOC adjusting stub.
11553 Since the linker pastes together pieces from
11554 different object files when creating the
11555 _init and _fini functions, it may be that a
11556 call to what looks like a local sym is in
11557 fact a call needing a TOC adjustment. */
8387904d
AM
11558 if (code_sec != NULL
11559 && code_sec->output_section != NULL
11560 && (htab->stub_group[code_sec->id].toc_off
9b5ecbd0 11561 != htab->stub_group[section->id].toc_off)
4c52953f
AM
11562 && (code_sec->has_toc_reloc
11563 || code_sec->makes_toc_func_call))
ad8e1ba5
AM
11564 stub_type = ppc_stub_long_branch_r2off;
11565 }
11566
721956f4
AM
11567 if (stub_type == ppc_stub_none)
11568 continue;
11569
411e1bfb
AM
11570 /* __tls_get_addr calls might be eliminated. */
11571 if (stub_type != ppc_stub_plt_call
11572 && hash != NULL
8387904d
AM
11573 && (hash == htab->tls_get_addr
11574 || hash == htab->tls_get_addr_fd)
411e1bfb
AM
11575 && section->has_tls_reloc
11576 && irela != internal_relocs)
11577 {
11578 /* Get tls info. */
f961d9dd 11579 unsigned char *tls_mask;
411e1bfb 11580
3a71aa26 11581 if (!get_tls_mask (&tls_mask, NULL, NULL, &local_syms,
411e1bfb
AM
11582 irela - 1, input_bfd))
11583 goto error_ret_free_internal;
e7b938ca 11584 if (*tls_mask != 0)
411e1bfb
AM
11585 continue;
11586 }
11587
3b421ab3
AM
11588 if (stub_type == ppc_stub_plt_call
11589 && irela + 1 < irelaend
11590 && irela[1].r_offset == irela->r_offset + 4
794e51c0
AM
11591 && ELF64_R_TYPE (irela[1].r_info) == R_PPC64_TOCSAVE)
11592 {
11593 if (!tocsave_find (htab, INSERT,
11594 &local_syms, irela + 1, input_bfd))
11595 goto error_ret_free_internal;
11596 }
11597 else if (stub_type == ppc_stub_plt_call)
11598 stub_type = ppc_stub_plt_call_r2save;
3b421ab3 11599
721956f4
AM
11600 /* Support for grouping stub sections. */
11601 id_sec = htab->stub_group[section->id].link_sec;
11602
11603 /* Get the name of this stub. */
11604 stub_name = ppc_stub_name (id_sec, sym_sec, hash, irela);
11605 if (!stub_name)
11606 goto error_ret_free_internal;
11607
11608 stub_entry = ppc_stub_hash_lookup (&htab->stub_hash_table,
b34976b6 11609 stub_name, FALSE, FALSE);
721956f4
AM
11610 if (stub_entry != NULL)
11611 {
11612 /* The proper stub has already been created. */
11613 free (stub_name);
794e51c0
AM
11614 if (stub_type == ppc_stub_plt_call_r2save)
11615 stub_entry->stub_type = stub_type;
721956f4
AM
11616 continue;
11617 }
11618
25f53a85 11619 stub_entry = ppc_add_stub (stub_name, section, info);
721956f4
AM
11620 if (stub_entry == NULL)
11621 {
11622 free (stub_name);
6cdc0ccc
AM
11623 error_ret_free_internal:
11624 if (elf_section_data (section)->relocs == NULL)
11625 free (internal_relocs);
11626 error_ret_free_local:
11627 if (local_syms != NULL
11628 && (symtab_hdr->contents
11629 != (unsigned char *) local_syms))
11630 free (local_syms);
b34976b6 11631 return FALSE;
721956f4
AM
11632 }
11633
ad8e1ba5 11634 stub_entry->stub_type = stub_type;
794e51c0
AM
11635 if (stub_type != ppc_stub_plt_call
11636 && stub_type != ppc_stub_plt_call_r2save)
e054468f
AM
11637 {
11638 stub_entry->target_value = code_value;
11639 stub_entry->target_section = code_sec;
11640 }
11641 else
11642 {
11643 stub_entry->target_value = sym_value;
11644 stub_entry->target_section = sym_sec;
11645 }
721956f4 11646 stub_entry->h = hash;
e054468f 11647 stub_entry->plt_ent = plt_ent;
411e1bfb 11648 stub_entry->addend = irela->r_addend;
ee75fd95
AM
11649
11650 if (stub_entry->h != NULL)
11651 htab->stub_globals += 1;
721956f4
AM
11652 }
11653
11654 /* We're done with the internal relocs, free them. */
6cdc0ccc 11655 if (elf_section_data (section)->relocs != internal_relocs)
1e2f5b6e 11656 free (internal_relocs);
721956f4 11657 }
6cdc0ccc
AM
11658
11659 if (local_syms != NULL
11660 && symtab_hdr->contents != (unsigned char *) local_syms)
11661 {
11662 if (!info->keep_memory)
11663 free (local_syms);
11664 else
11665 symtab_hdr->contents = (unsigned char *) local_syms;
11666 }
721956f4
AM
11667 }
11668
5c3dead3 11669 /* We may have added some stubs. Find out the new size of the
721956f4
AM
11670 stub sections. */
11671 for (stub_sec = htab->stub_bfd->sections;
11672 stub_sec != NULL;
11673 stub_sec = stub_sec->next)
e717da7e 11674 if ((stub_sec->flags & SEC_LINKER_CREATED) == 0)
ee75fd95 11675 {
5c3dead3 11676 stub_sec->rawsize = stub_sec->size;
ee75fd95
AM
11677 stub_sec->size = 0;
11678 stub_sec->reloc_count = 0;
84f5d08e 11679 stub_sec->flags &= ~SEC_RELOC;
ee75fd95 11680 }
eea6121a
AM
11681
11682 htab->brlt->size = 0;
84f5d08e
AM
11683 htab->brlt->reloc_count = 0;
11684 htab->brlt->flags &= ~SEC_RELOC;
ee75fd95 11685 if (htab->relbrlt != NULL)
eea6121a 11686 htab->relbrlt->size = 0;
721956f4 11687
63bc6f6c 11688 bfd_hash_traverse (&htab->stub_hash_table, ppc_size_one_stub, info);
721956f4 11689
176a0d42
AM
11690 if (info->emitrelocations
11691 && htab->glink != NULL && htab->glink->size != 0)
11692 {
11693 htab->glink->reloc_count = 1;
11694 htab->glink->flags |= SEC_RELOC;
11695 }
11696
58d180e8
AM
11697 if (htab->glink_eh_frame != NULL
11698 && !bfd_is_abs_section (htab->glink_eh_frame->output_section)
9a2a56cc 11699 && htab->glink_eh_frame->output_section->size != 0)
58d180e8 11700 {
4bbe044a 11701 size_t size = 0, align;
58d180e8
AM
11702
11703 for (stub_sec = htab->stub_bfd->sections;
11704 stub_sec != NULL;
11705 stub_sec = stub_sec->next)
11706 if ((stub_sec->flags & SEC_LINKER_CREATED) == 0)
11707 size += 20;
11708 if (htab->glink != NULL && htab->glink->size != 0)
11709 size += 24;
11710 if (size != 0)
11711 size += sizeof (glink_eh_frame_cie);
4bbe044a
AM
11712 align = 1;
11713 align <<= htab->glink_eh_frame->output_section->alignment_power;
11714 align -= 1;
11715 size = (size + align) & ~align;
58d180e8
AM
11716 htab->glink_eh_frame->rawsize = htab->glink_eh_frame->size;
11717 htab->glink_eh_frame->size = size;
11718 }
11719
794e51c0
AM
11720 if (htab->plt_stub_align != 0)
11721 for (stub_sec = htab->stub_bfd->sections;
11722 stub_sec != NULL;
11723 stub_sec = stub_sec->next)
11724 if ((stub_sec->flags & SEC_LINKER_CREATED) == 0)
11725 stub_sec->size = ((stub_sec->size + (1 << htab->plt_stub_align) - 1)
11726 & (-1 << htab->plt_stub_align));
11727
5c3dead3
AM
11728 for (stub_sec = htab->stub_bfd->sections;
11729 stub_sec != NULL;
11730 stub_sec = stub_sec->next)
11731 if ((stub_sec->flags & SEC_LINKER_CREATED) == 0
11732 && stub_sec->rawsize != stub_sec->size)
11733 break;
11734
11735 /* Exit from this loop when no stubs have been added, and no stubs
11736 have changed size. */
58d180e8
AM
11737 if (stub_sec == NULL
11738 && (htab->glink_eh_frame == NULL
11739 || htab->glink_eh_frame->rawsize == htab->glink_eh_frame->size))
5c3dead3
AM
11740 break;
11741
721956f4
AM
11742 /* Ask the linker to do its stuff. */
11743 (*htab->layout_sections_again) ();
11744 }
11745
d969d15f
AM
11746 maybe_strip_output (info, htab->brlt);
11747 if (htab->glink_eh_frame != NULL)
11748 maybe_strip_output (info, htab->glink_eh_frame);
721956f4 11749
b34976b6 11750 return TRUE;
721956f4
AM
11751}
11752
11753/* Called after we have determined section placement. If sections
805fc799 11754 move, we'll be called again. Provide a value for TOCstart. */
721956f4 11755
805fc799 11756bfd_vma
4ce794b7 11757ppc64_elf_toc (bfd *obfd)
721956f4 11758{
805fc799
AM
11759 asection *s;
11760 bfd_vma TOCstart;
721956f4 11761
805fc799
AM
11762 /* The TOC consists of sections .got, .toc, .tocbss, .plt in that
11763 order. The TOC starts where the first of these sections starts. */
11764 s = bfd_get_section_by_name (obfd, ".got");
e054468f 11765 if (s == NULL || (s->flags & SEC_EXCLUDE) != 0)
805fc799 11766 s = bfd_get_section_by_name (obfd, ".toc");
e054468f 11767 if (s == NULL || (s->flags & SEC_EXCLUDE) != 0)
805fc799 11768 s = bfd_get_section_by_name (obfd, ".tocbss");
e054468f 11769 if (s == NULL || (s->flags & SEC_EXCLUDE) != 0)
805fc799 11770 s = bfd_get_section_by_name (obfd, ".plt");
e054468f 11771 if (s == NULL || (s->flags & SEC_EXCLUDE) != 0)
805fc799
AM
11772 {
11773 /* This may happen for
11774 o references to TOC base (SYM@toc / TOC[tc0]) without a
11775 .toc directive
11776 o bad linker script
11777 o --gc-sections and empty TOC sections
11778
11779 FIXME: Warn user? */
11780
11781 /* Look for a likely section. We probably won't even be
11782 using TOCstart. */
11783 for (s = obfd->sections; s != NULL; s = s->next)
e054468f
AM
11784 if ((s->flags & (SEC_ALLOC | SEC_SMALL_DATA | SEC_READONLY
11785 | SEC_EXCLUDE))
805fc799
AM
11786 == (SEC_ALLOC | SEC_SMALL_DATA))
11787 break;
721956f4 11788 if (s == NULL)
805fc799 11789 for (s = obfd->sections; s != NULL; s = s->next)
e054468f 11790 if ((s->flags & (SEC_ALLOC | SEC_SMALL_DATA | SEC_EXCLUDE))
805fc799
AM
11791 == (SEC_ALLOC | SEC_SMALL_DATA))
11792 break;
721956f4 11793 if (s == NULL)
805fc799 11794 for (s = obfd->sections; s != NULL; s = s->next)
e054468f
AM
11795 if ((s->flags & (SEC_ALLOC | SEC_READONLY | SEC_EXCLUDE))
11796 == SEC_ALLOC)
805fc799 11797 break;
721956f4 11798 if (s == NULL)
805fc799 11799 for (s = obfd->sections; s != NULL; s = s->next)
e054468f 11800 if ((s->flags & (SEC_ALLOC | SEC_EXCLUDE)) == SEC_ALLOC)
805fc799
AM
11801 break;
11802 }
721956f4 11803
805fc799
AM
11804 TOCstart = 0;
11805 if (s != NULL)
11806 TOCstart = s->output_section->vma + s->output_offset;
721956f4 11807
805fc799 11808 return TOCstart;
721956f4
AM
11809}
11810
11811/* Build all the stubs associated with the current output file.
11812 The stubs are kept in a hash table attached to the main linker
11813 hash table. This function is called via gldelf64ppc_finish. */
11814
b34976b6 11815bfd_boolean
4ce794b7
AM
11816ppc64_elf_build_stubs (bfd_boolean emit_stub_syms,
11817 struct bfd_link_info *info,
11818 char **stats)
5d1634d7
AM
11819{
11820 struct ppc_link_hash_table *htab = ppc_hash_table (info);
721956f4 11821 asection *stub_sec;
5d1634d7 11822 bfd_byte *p;
e717da7e 11823 int stub_sec_count = 0;
5d1634d7 11824
4dfe6ac6
NC
11825 if (htab == NULL)
11826 return FALSE;
11827
ad8e1ba5 11828 htab->emit_stub_syms = emit_stub_syms;
eea6121a
AM
11829
11830 /* Allocate memory to hold the linker stubs. */
721956f4
AM
11831 for (stub_sec = htab->stub_bfd->sections;
11832 stub_sec != NULL;
11833 stub_sec = stub_sec->next)
eea6121a
AM
11834 if ((stub_sec->flags & SEC_LINKER_CREATED) == 0
11835 && stub_sec->size != 0)
e717da7e 11836 {
eea6121a
AM
11837 stub_sec->contents = bfd_zalloc (htab->stub_bfd, stub_sec->size);
11838 if (stub_sec->contents == NULL)
11839 return FALSE;
11840 /* We want to check that built size is the same as calculated
11841 size. rawsize is a convenient location to use. */
11842 stub_sec->rawsize = stub_sec->size;
11843 stub_sec->size = 0;
e717da7e 11844 }
5d1634d7 11845
23eb7e01 11846 if (htab->glink != NULL && htab->glink->size != 0)
5d1634d7 11847 {
9f951329 11848 unsigned int indx;
ad8e1ba5 11849 bfd_vma plt0;
9f951329 11850
721956f4 11851 /* Build the .glink plt call stub. */
97b639ba
AM
11852 if (htab->emit_stub_syms)
11853 {
11854 struct elf_link_hash_entry *h;
468392fb
AM
11855 h = elf_link_hash_lookup (&htab->elf, "__glink_PLTresolve",
11856 TRUE, FALSE, FALSE);
97b639ba
AM
11857 if (h == NULL)
11858 return FALSE;
11859 if (h->root.type == bfd_link_hash_new)
11860 {
11861 h->root.type = bfd_link_hash_defined;
11862 h->root.u.def.section = htab->glink;
ee4bf8d2 11863 h->root.u.def.value = 8;
f5385ebf
AM
11864 h->ref_regular = 1;
11865 h->def_regular = 1;
11866 h->ref_regular_nonweak = 1;
11867 h->forced_local = 1;
11868 h->non_elf = 0;
97b639ba
AM
11869 }
11870 }
176a0d42
AM
11871 plt0 = htab->plt->output_section->vma + htab->plt->output_offset - 16;
11872 if (info->emitrelocations)
11873 {
11874 Elf_Internal_Rela *r = get_relocs (htab->glink, 1);
11875 if (r == NULL)
11876 return FALSE;
11877 r->r_offset = (htab->glink->output_offset
11878 + htab->glink->output_section->vma);
11879 r->r_info = ELF64_R_INFO (0, R_PPC64_REL64);
11880 r->r_addend = plt0;
11881 }
4ce794b7 11882 p = htab->glink->contents;
176a0d42 11883 plt0 -= htab->glink->output_section->vma + htab->glink->output_offset;
ee4bf8d2
AM
11884 bfd_put_64 (htab->glink->owner, plt0, p);
11885 p += 8;
11886 bfd_put_32 (htab->glink->owner, MFLR_R12, p);
ad8e1ba5 11887 p += 4;
ee4bf8d2 11888 bfd_put_32 (htab->glink->owner, BCL_20_31, p);
ad8e1ba5 11889 p += 4;
ee4bf8d2 11890 bfd_put_32 (htab->glink->owner, MFLR_R11, p);
ad8e1ba5 11891 p += 4;
ee4bf8d2 11892 bfd_put_32 (htab->glink->owner, LD_R2_M16R11, p);
ad8e1ba5 11893 p += 4;
ee4bf8d2 11894 bfd_put_32 (htab->glink->owner, MTLR_R12, p);
ad8e1ba5 11895 p += 4;
ee4bf8d2 11896 bfd_put_32 (htab->glink->owner, ADD_R12_R2_R11, p);
ad8e1ba5 11897 p += 4;
ee4bf8d2 11898 bfd_put_32 (htab->glink->owner, LD_R11_0R12, p);
ad8e1ba5 11899 p += 4;
4ce794b7 11900 bfd_put_32 (htab->glink->owner, LD_R2_0R12 | 8, p);
ad8e1ba5 11901 p += 4;
4ce794b7 11902 bfd_put_32 (htab->glink->owner, MTCTR_R11, p);
ad8e1ba5 11903 p += 4;
4ce794b7 11904 bfd_put_32 (htab->glink->owner, LD_R11_0R12 | 16, p);
ad8e1ba5 11905 p += 4;
4ce794b7 11906 bfd_put_32 (htab->glink->owner, BCTR, p);
ad8e1ba5 11907 p += 4;
ee4bf8d2
AM
11908 while (p - htab->glink->contents < GLINK_CALL_STUB_SIZE)
11909 {
11910 bfd_put_32 (htab->glink->owner, NOP, p);
11911 p += 4;
11912 }
ad8e1ba5 11913
9f951329
AM
11914 /* Build the .glink lazy link call stubs. */
11915 indx = 0;
eea6121a 11916 while (p < htab->glink->contents + htab->glink->size)
9f951329
AM
11917 {
11918 if (indx < 0x8000)
11919 {
4ce794b7 11920 bfd_put_32 (htab->glink->owner, LI_R0_0 | indx, p);
9f951329
AM
11921 p += 4;
11922 }
11923 else
11924 {
4ce794b7 11925 bfd_put_32 (htab->glink->owner, LIS_R0_0 | PPC_HI (indx), p);
9f951329 11926 p += 4;
4ce794b7 11927 bfd_put_32 (htab->glink->owner, ORI_R0_R0_0 | PPC_LO (indx), p);
9f951329
AM
11928 p += 4;
11929 }
4ce794b7 11930 bfd_put_32 (htab->glink->owner,
ee4bf8d2 11931 B_DOT | ((htab->glink->contents - p + 8) & 0x3fffffc), p);
a16d5acb 11932 indx++;
9f951329
AM
11933 p += 4;
11934 }
eea6121a 11935 htab->glink->rawsize = p - htab->glink->contents;
5d1634d7 11936 }
5d1634d7 11937
eea6121a 11938 if (htab->brlt->size != 0)
721956f4 11939 {
4ce794b7 11940 htab->brlt->contents = bfd_zalloc (htab->brlt->owner,
eea6121a 11941 htab->brlt->size);
4ce794b7 11942 if (htab->brlt->contents == NULL)
b34976b6 11943 return FALSE;
721956f4 11944 }
ee75fd95 11945 if (htab->relbrlt != NULL && htab->relbrlt->size != 0)
63bc6f6c
AM
11946 {
11947 htab->relbrlt->contents = bfd_zalloc (htab->relbrlt->owner,
eea6121a 11948 htab->relbrlt->size);
63bc6f6c
AM
11949 if (htab->relbrlt->contents == NULL)
11950 return FALSE;
11951 }
5d1634d7 11952
58d180e8
AM
11953 if (htab->glink_eh_frame != NULL
11954 && htab->glink_eh_frame->size != 0)
11955 {
11956 bfd_vma val;
4bbe044a
AM
11957 bfd_byte *last_fde;
11958 size_t last_fde_len, size, align, pad;
58d180e8
AM
11959
11960 p = bfd_zalloc (htab->glink_eh_frame->owner, htab->glink_eh_frame->size);
11961 if (p == NULL)
11962 return FALSE;
11963 htab->glink_eh_frame->contents = p;
4bbe044a 11964 last_fde = p;
58d180e8
AM
11965
11966 htab->glink_eh_frame->rawsize = htab->glink_eh_frame->size;
11967
11968 memcpy (p, glink_eh_frame_cie, sizeof (glink_eh_frame_cie));
11969 /* CIE length (rewrite in case little-endian). */
4bbe044a
AM
11970 last_fde_len = sizeof (glink_eh_frame_cie) - 4;
11971 bfd_put_32 (htab->elf.dynobj, last_fde_len, p);
58d180e8
AM
11972 p += sizeof (glink_eh_frame_cie);
11973
11974 for (stub_sec = htab->stub_bfd->sections;
11975 stub_sec != NULL;
11976 stub_sec = stub_sec->next)
11977 if ((stub_sec->flags & SEC_LINKER_CREATED) == 0)
11978 {
4bbe044a
AM
11979 last_fde = p;
11980 last_fde_len = 16;
58d180e8
AM
11981 /* FDE length. */
11982 bfd_put_32 (htab->elf.dynobj, 16, p);
11983 p += 4;
11984 /* CIE pointer. */
11985 val = p - htab->glink_eh_frame->contents;
11986 bfd_put_32 (htab->elf.dynobj, val, p);
11987 p += 4;
11988 /* Offset to stub section. */
11989 val = (stub_sec->output_section->vma
11990 + stub_sec->output_offset);
11991 val -= (htab->glink_eh_frame->output_section->vma
11992 + htab->glink_eh_frame->output_offset);
11993 val -= p - htab->glink_eh_frame->contents;
11994 if (val + 0x80000000 > 0xffffffff)
11995 {
11996 info->callbacks->einfo
8de848d8 11997 (_("%P: %s offset too large for .eh_frame sdata4 encoding"),
58d180e8
AM
11998 stub_sec->name);
11999 return FALSE;
12000 }
12001 bfd_put_32 (htab->elf.dynobj, val, p);
12002 p += 4;
12003 /* stub section size. */
12004 bfd_put_32 (htab->elf.dynobj, stub_sec->rawsize, p);
12005 p += 4;
12006 /* Augmentation. */
12007 p += 1;
12008 /* Pad. */
12009 p += 3;
12010 }
12011 if (htab->glink != NULL && htab->glink->size != 0)
12012 {
4bbe044a
AM
12013 last_fde = p;
12014 last_fde_len = 20;
58d180e8
AM
12015 /* FDE length. */
12016 bfd_put_32 (htab->elf.dynobj, 20, p);
12017 p += 4;
12018 /* CIE pointer. */
12019 val = p - htab->glink_eh_frame->contents;
12020 bfd_put_32 (htab->elf.dynobj, val, p);
12021 p += 4;
12022 /* Offset to .glink. */
12023 val = (htab->glink->output_section->vma
12024 + htab->glink->output_offset
12025 + 8);
12026 val -= (htab->glink_eh_frame->output_section->vma
12027 + htab->glink_eh_frame->output_offset);
12028 val -= p - htab->glink_eh_frame->contents;
12029 if (val + 0x80000000 > 0xffffffff)
12030 {
12031 info->callbacks->einfo
8de848d8 12032 (_("%P: %s offset too large for .eh_frame sdata4 encoding"),
58d180e8
AM
12033 htab->glink->name);
12034 return FALSE;
12035 }
12036 bfd_put_32 (htab->elf.dynobj, val, p);
12037 p += 4;
12038 /* .glink size. */
12039 bfd_put_32 (htab->elf.dynobj, htab->glink->rawsize - 8, p);
12040 p += 4;
12041 /* Augmentation. */
12042 p += 1;
12043
12044 *p++ = DW_CFA_advance_loc + 1;
12045 *p++ = DW_CFA_register;
12046 *p++ = 65;
12047 *p++ = 12;
12048 *p++ = DW_CFA_advance_loc + 4;
12049 *p++ = DW_CFA_restore_extended;
12050 *p++ = 65;
12051 }
4bbe044a
AM
12052 /* Subsume any padding into the last FDE if user .eh_frame
12053 sections are aligned more than glink_eh_frame. Otherwise any
12054 zero padding will be seen as a terminator. */
12055 size = p - htab->glink_eh_frame->contents;
12056 align = 1;
12057 align <<= htab->glink_eh_frame->output_section->alignment_power;
12058 align -= 1;
12059 pad = ((size + align) & ~align) - size;
12060 htab->glink_eh_frame->size = size + pad;
12061 bfd_put_32 (htab->elf.dynobj, last_fde_len + pad, last_fde);
58d180e8
AM
12062 }
12063
721956f4
AM
12064 /* Build the stubs as directed by the stub hash table. */
12065 bfd_hash_traverse (&htab->stub_hash_table, ppc_build_one_stub, info);
5d1634d7 12066
aa8a7074
AM
12067 if (htab->relbrlt != NULL)
12068 htab->relbrlt->reloc_count = 0;
12069
794e51c0
AM
12070 if (htab->plt_stub_align != 0)
12071 for (stub_sec = htab->stub_bfd->sections;
12072 stub_sec != NULL;
12073 stub_sec = stub_sec->next)
12074 if ((stub_sec->flags & SEC_LINKER_CREATED) == 0)
12075 stub_sec->size = ((stub_sec->size + (1 << htab->plt_stub_align) - 1)
12076 & (-1 << htab->plt_stub_align));
12077
721956f4
AM
12078 for (stub_sec = htab->stub_bfd->sections;
12079 stub_sec != NULL;
12080 stub_sec = stub_sec->next)
e717da7e
AM
12081 if ((stub_sec->flags & SEC_LINKER_CREATED) == 0)
12082 {
12083 stub_sec_count += 1;
eea6121a 12084 if (stub_sec->rawsize != stub_sec->size)
e717da7e
AM
12085 break;
12086 }
5d1634d7 12087
721956f4 12088 if (stub_sec != NULL
58d180e8
AM
12089 || htab->glink->rawsize != htab->glink->size
12090 || (htab->glink_eh_frame != NULL
12091 && htab->glink_eh_frame->rawsize != htab->glink_eh_frame->size))
5d1634d7 12092 {
b34976b6 12093 htab->stub_error = TRUE;
8de848d8 12094 info->callbacks->einfo (_("%P: stubs don't match calculated size\n"));
5d1634d7 12095 }
721956f4 12096
d2a300cf
AM
12097 if (htab->stub_error)
12098 return FALSE;
12099
12100 if (stats != NULL)
12101 {
12102 *stats = bfd_malloc (500);
12103 if (*stats == NULL)
12104 return FALSE;
12105
ee75fd95 12106 sprintf (*stats, _("linker stubs in %u group%s\n"
d2a300cf
AM
12107 " branch %lu\n"
12108 " toc adjust %lu\n"
12109 " long branch %lu\n"
12110 " long toc adj %lu\n"
794e51c0
AM
12111 " plt call %lu\n"
12112 " plt call toc %lu"),
e717da7e 12113 stub_sec_count,
ee75fd95 12114 stub_sec_count == 1 ? "" : "s",
4ce794b7
AM
12115 htab->stub_count[ppc_stub_long_branch - 1],
12116 htab->stub_count[ppc_stub_long_branch_r2off - 1],
12117 htab->stub_count[ppc_stub_plt_branch - 1],
12118 htab->stub_count[ppc_stub_plt_branch_r2off - 1],
794e51c0
AM
12119 htab->stub_count[ppc_stub_plt_call - 1],
12120 htab->stub_count[ppc_stub_plt_call_r2save - 1]);
d2a300cf
AM
12121 }
12122 return TRUE;
5bd4f169
AM
12123}
12124
99877b66
AM
12125/* This function undoes the changes made by add_symbol_adjust. */
12126
12127static bfd_boolean
12128undo_symbol_twiddle (struct elf_link_hash_entry *h, void *inf ATTRIBUTE_UNUSED)
12129{
12130 struct ppc_link_hash_entry *eh;
12131
12132 if (h->root.type == bfd_link_hash_indirect)
12133 return TRUE;
12134
99877b66
AM
12135 eh = (struct ppc_link_hash_entry *) h;
12136 if (eh->elf.root.type != bfd_link_hash_undefweak || !eh->was_undefined)
12137 return TRUE;
12138
12139 eh->elf.root.type = bfd_link_hash_undefined;
12140 return TRUE;
12141}
12142
12143void
12144ppc64_elf_restore_symbols (struct bfd_link_info *info)
12145{
12146 struct ppc_link_hash_table *htab = ppc_hash_table (info);
4dfe6ac6
NC
12147
12148 if (htab != NULL)
12149 elf_link_hash_traverse (&htab->elf, undo_symbol_twiddle, info);
99877b66
AM
12150}
12151
60124e18
AM
12152/* What to do when ld finds relocations against symbols defined in
12153 discarded sections. */
12154
12155static unsigned int
12156ppc64_elf_action_discarded (asection *sec)
12157{
12158 if (strcmp (".opd", sec->name) == 0)
12159 return 0;
12160
12161 if (strcmp (".toc", sec->name) == 0)
12162 return 0;
12163
bce50a28
JJ
12164 if (strcmp (".toc1", sec->name) == 0)
12165 return 0;
12166
60124e18
AM
12167 return _bfd_elf_default_action_discarded (sec);
12168}
12169
5bd4f169
AM
12170/* The RELOCATE_SECTION function is called by the ELF backend linker
12171 to handle the relocations for a section.
12172
12173 The relocs are always passed as Rela structures; if the section
12174 actually uses Rel structures, the r_addend field will always be
12175 zero.
12176
12177 This function is responsible for adjust the section contents as
12178 necessary, and (if using Rela relocs and generating a
1049f94e 12179 relocatable output file) adjusting the reloc addend as
5bd4f169
AM
12180 necessary.
12181
12182 This function does not have to worry about setting the reloc
12183 address or the reloc symbol index.
12184
12185 LOCAL_SYMS is a pointer to the swapped in local symbols.
12186
12187 LOCAL_SECTIONS is an array giving the section in the input file
12188 corresponding to the st_shndx field of each local symbol.
12189
12190 The global hash table entry for the global symbols can be found
12191 via elf_sym_hashes (input_bfd).
12192
1049f94e 12193 When generating relocatable output, this function must handle
5bd4f169
AM
12194 STB_LOCAL/STT_SECTION symbols specially. The output symbol is
12195 going to be the section symbol corresponding to the output
12196 section, which means that the addend must be adjusted
12197 accordingly. */
12198
b34976b6 12199static bfd_boolean
4ce794b7
AM
12200ppc64_elf_relocate_section (bfd *output_bfd,
12201 struct bfd_link_info *info,
12202 bfd *input_bfd,
12203 asection *input_section,
12204 bfd_byte *contents,
12205 Elf_Internal_Rela *relocs,
12206 Elf_Internal_Sym *local_syms,
12207 asection **local_sections)
5bd4f169 12208{
65f38f15 12209 struct ppc_link_hash_table *htab;
5bd4f169
AM
12210 Elf_Internal_Shdr *symtab_hdr;
12211 struct elf_link_hash_entry **sym_hashes;
5bd4f169
AM
12212 Elf_Internal_Rela *rel;
12213 Elf_Internal_Rela *relend;
411e1bfb
AM
12214 Elf_Internal_Rela outrel;
12215 bfd_byte *loc;
411e1bfb 12216 struct got_entry **local_got_ents;
5bd4f169 12217 bfd_vma TOCstart;
b34976b6
AM
12218 bfd_boolean ret = TRUE;
12219 bfd_boolean is_opd;
794e51c0
AM
12220 /* Assume 'at' branch hints. */
12221 bfd_boolean is_isa_v2 = TRUE;
4fe5ca5b 12222 bfd_vma d_offset = (bfd_big_endian (output_bfd) ? 2 : 0);
5bd4f169 12223
65f38f15 12224 /* Initialize howto table if needed. */
5bd4f169 12225 if (!ppc64_elf_howto_table[R_PPC64_ADDR32])
5bd4f169
AM
12226 ppc_howto_init ();
12227
65f38f15 12228 htab = ppc_hash_table (info);
4dfe6ac6
NC
12229 if (htab == NULL)
12230 return FALSE;
ee75fd95
AM
12231
12232 /* Don't relocate stub sections. */
12233 if (input_section->owner == htab->stub_bfd)
12234 return TRUE;
12235
0c8d6e5c 12236 BFD_ASSERT (is_ppc64_elf (input_bfd));
0ffa91dd 12237
411e1bfb 12238 local_got_ents = elf_local_got_ents (input_bfd);
5bd4f169 12239 TOCstart = elf_gp (output_bfd);
0ffa91dd 12240 symtab_hdr = &elf_symtab_hdr (input_bfd);
5bd4f169 12241 sym_hashes = elf_sym_hashes (input_bfd);
7c8fe5c4 12242 is_opd = ppc64_elf_section_data (input_section)->sec_type == sec_opd;
65f38f15 12243
5bd4f169
AM
12244 rel = relocs;
12245 relend = relocs + input_section->reloc_count;
12246 for (; rel < relend; rel++)
12247 {
04c9666a 12248 enum elf_ppc64_reloc_type r_type;
4cc603a5 12249 bfd_vma addend, orig_addend;
5bd4f169
AM
12250 bfd_reloc_status_type r;
12251 Elf_Internal_Sym *sym;
12252 asection *sec;
039b3fef
AM
12253 struct elf_link_hash_entry *h_elf;
12254 struct ppc_link_hash_entry *h;
12255 struct ppc_link_hash_entry *fdh;
5bd4f169 12256 const char *sym_name;
0d4792f7 12257 unsigned long r_symndx, toc_symndx;
3a71aa26 12258 bfd_vma toc_addend;
f961d9dd
AM
12259 unsigned char tls_mask, tls_gd, tls_type;
12260 unsigned char sym_type;
5bd4f169 12261 bfd_vma relocation;
b34976b6
AM
12262 bfd_boolean unresolved_reloc;
12263 bfd_boolean warned;
67f0cbdb 12264 unsigned int insn;
e11840f9 12265 unsigned int mask;
721956f4
AM
12266 struct ppc_stub_hash_entry *stub_entry;
12267 bfd_vma max_br_offset;
12268 bfd_vma from;
5bd4f169 12269
4ce794b7 12270 r_type = ELF64_R_TYPE (rel->r_info);
5bd4f169 12271 r_symndx = ELF64_R_SYM (rel->r_info);
ee87f2da
AM
12272
12273 /* For old style R_PPC64_TOC relocs with a zero symbol, use the
12274 symbol of the previous ADDR64 reloc. The symbol gives us the
12275 proper TOC base to use. */
12276 if (rel->r_info == ELF64_R_INFO (0, R_PPC64_TOC)
12277 && rel != relocs
12278 && ELF64_R_TYPE (rel[-1].r_info) == R_PPC64_ADDR64
12279 && is_opd)
12280 r_symndx = ELF64_R_SYM (rel[-1].r_info);
12281
4ce794b7
AM
12282 sym = NULL;
12283 sec = NULL;
039b3fef 12284 h_elf = NULL;
4ce794b7 12285 sym_name = NULL;
b34976b6
AM
12286 unresolved_reloc = FALSE;
12287 warned = FALSE;
4cc603a5 12288 orig_addend = rel->r_addend;
65f38f15 12289
0b13192e 12290 if (r_symndx < symtab_hdr->sh_info)
5bd4f169
AM
12291 {
12292 /* It's a local symbol. */
74f0fb50 12293 struct _opd_sec_data *opd;
4025353c 12294
5bd4f169
AM
12295 sym = local_syms + r_symndx;
12296 sec = local_sections[r_symndx];
26c61ae5 12297 sym_name = bfd_elf_sym_name (input_bfd, symtab_hdr, sym, sec);
0d4792f7 12298 sym_type = ELF64_ST_TYPE (sym->st_info);
8517fae7 12299 relocation = _bfd_elf_rela_local_sym (output_bfd, sym, &sec, rel);
74f0fb50
AM
12300 opd = get_opd_info (sec);
12301 if (opd != NULL && opd->adjust != NULL)
1e2f5b6e 12302 {
74f0fb50 12303 long adjust = opd->adjust[(sym->st_value + rel->r_addend) / 8];
4025353c
AM
12304 if (adjust == -1)
12305 relocation = 0;
12306 else
4cc603a5
AM
12307 {
12308 /* If this is a relocation against the opd section sym
12309 and we have edited .opd, adjust the reloc addend so
12310 that ld -r and ld --emit-relocs output is correct.
12311 If it is a reloc against some other .opd symbol,
12312 then the symbol value will be adjusted later. */
12313 if (ELF_ST_TYPE (sym->st_info) == STT_SECTION)
12314 rel->r_addend += adjust;
12315 else
12316 relocation += adjust;
12317 }
1e2f5b6e 12318 }
5bd4f169
AM
12319 }
12320 else
12321 {
b2a8e766
AM
12322 RELOC_FOR_GLOBAL_SYMBOL (info, input_bfd, input_section, rel,
12323 r_symndx, symtab_hdr, sym_hashes,
039b3fef 12324 h_elf, sec, relocation,
b2a8e766 12325 unresolved_reloc, warned);
039b3fef
AM
12326 sym_name = h_elf->root.root.string;
12327 sym_type = h_elf->type;
5bd4f169 12328 }
039b3fef 12329 h = (struct ppc_link_hash_entry *) h_elf;
5bd4f169 12330
dbaa2011 12331 if (sec != NULL && discarded_section (sec))
e4067dbb 12332 RELOC_AGAINST_DISCARDED_SECTION (info, input_bfd, input_section,
545fd46b
MR
12333 rel, 1, relend,
12334 ppc64_elf_howto_table[r_type], 0,
e4067dbb 12335 contents);
ab96bf03
AM
12336
12337 if (info->relocatable)
12338 continue;
12339
951fd09b
AM
12340 /* TLS optimizations. Replace instruction sequences and relocs
12341 based on information we collected in tls_optimize. We edit
12342 RELOCS so that --emit-relocs will output something sensible
12343 for the final instruction stream. */
12344 tls_mask = 0;
12345 tls_gd = 0;
0d4792f7 12346 toc_symndx = 0;
727fc41e
AM
12347 if (h != NULL)
12348 tls_mask = h->tls_mask;
12349 else if (local_got_ents != NULL)
411e1bfb 12350 {
e054468f
AM
12351 struct plt_entry **local_plt = (struct plt_entry **)
12352 (local_got_ents + symtab_hdr->sh_info);
f961d9dd 12353 unsigned char *lgot_masks = (unsigned char *)
e054468f 12354 (local_plt + symtab_hdr->sh_info);
727fc41e
AM
12355 tls_mask = lgot_masks[r_symndx];
12356 }
12357 if (tls_mask == 0
12358 && (r_type == R_PPC64_TLS
12359 || r_type == R_PPC64_TLSGD
12360 || r_type == R_PPC64_TLSLD))
12361 {
12362 /* Check for toc tls entries. */
f961d9dd 12363 unsigned char *toc_tls;
0d4792f7 12364
727fc41e
AM
12365 if (!get_tls_mask (&toc_tls, &toc_symndx, &toc_addend,
12366 &local_syms, rel, input_bfd))
12367 return FALSE;
0d4792f7 12368
727fc41e
AM
12369 if (toc_tls)
12370 tls_mask = *toc_tls;
0d4792f7
AM
12371 }
12372
12373 /* Check that tls relocs are used with tls syms, and non-tls
12374 relocs are used with non-tls syms. */
cf35638d 12375 if (r_symndx != STN_UNDEF
0d4792f7
AM
12376 && r_type != R_PPC64_NONE
12377 && (h == NULL
039b3fef
AM
12378 || h->elf.root.type == bfd_link_hash_defined
12379 || h->elf.root.type == bfd_link_hash_defweak)
1d483afe
AM
12380 && (IS_PPC64_TLS_RELOC (r_type)
12381 != (sym_type == STT_TLS
12382 || (sym_type == STT_SECTION
12383 && (sec->flags & SEC_THREAD_LOCAL) != 0))))
0d4792f7 12384 {
727fc41e
AM
12385 if (tls_mask != 0
12386 && (r_type == R_PPC64_TLS
12387 || r_type == R_PPC64_TLSGD
12388 || r_type == R_PPC64_TLSLD))
0d4792f7
AM
12389 /* R_PPC64_TLS is OK against a symbol in the TOC. */
12390 ;
12391 else
25f53a85 12392 info->callbacks->einfo
1d483afe 12393 (!IS_PPC64_TLS_RELOC (r_type)
8de848d8
AM
12394 ? _("%P: %H: %s used with TLS symbol %s\n")
12395 : _("%P: %H: %s used with non-TLS symbol %s\n"),
25f53a85 12396 input_bfd, input_section, rel->r_offset,
0d4792f7
AM
12397 ppc64_elf_howto_table[r_type]->name,
12398 sym_name);
411e1bfb
AM
12399 }
12400
12401 /* Ensure reloc mapping code below stays sane. */
12402 if (R_PPC64_TOC16_LO_DS != R_PPC64_TOC16_DS + 1
12403 || R_PPC64_TOC16_LO != R_PPC64_TOC16 + 1
12404 || (R_PPC64_GOT_TLSLD16 & 3) != (R_PPC64_GOT_TLSGD16 & 3)
12405 || (R_PPC64_GOT_TLSLD16_LO & 3) != (R_PPC64_GOT_TLSGD16_LO & 3)
12406 || (R_PPC64_GOT_TLSLD16_HI & 3) != (R_PPC64_GOT_TLSGD16_HI & 3)
12407 || (R_PPC64_GOT_TLSLD16_HA & 3) != (R_PPC64_GOT_TLSGD16_HA & 3)
12408 || (R_PPC64_GOT_TLSLD16 & 3) != (R_PPC64_GOT_TPREL16_DS & 3)
12409 || (R_PPC64_GOT_TLSLD16_LO & 3) != (R_PPC64_GOT_TPREL16_LO_DS & 3)
12410 || (R_PPC64_GOT_TLSLD16_HI & 3) != (R_PPC64_GOT_TPREL16_HI & 3)
12411 || (R_PPC64_GOT_TLSLD16_HA & 3) != (R_PPC64_GOT_TPREL16_HA & 3))
12412 abort ();
0d4792f7 12413
411e1bfb
AM
12414 switch (r_type)
12415 {
12416 default:
411e1bfb
AM
12417 break;
12418
ba761f19
AM
12419 case R_PPC64_LO_DS_OPT:
12420 insn = bfd_get_32 (output_bfd, contents + rel->r_offset - d_offset);
12421 if ((insn & (0x3f << 26)) != 58u << 26)
12422 abort ();
12423 insn += (14u << 26) - (58u << 26);
12424 bfd_put_32 (output_bfd, insn, contents + rel->r_offset - d_offset);
12425 r_type = R_PPC64_TOC16_LO;
12426 rel->r_info = ELF64_R_INFO (r_symndx, r_type);
12427 break;
12428
411e1bfb
AM
12429 case R_PPC64_TOC16:
12430 case R_PPC64_TOC16_LO:
12431 case R_PPC64_TOC16_DS:
12432 case R_PPC64_TOC16_LO_DS:
411e1bfb
AM
12433 {
12434 /* Check for toc tls entries. */
f961d9dd 12435 unsigned char *toc_tls;
951fd09b 12436 int retval;
411e1bfb 12437
3a71aa26
AM
12438 retval = get_tls_mask (&toc_tls, &toc_symndx, &toc_addend,
12439 &local_syms, rel, input_bfd);
951fd09b 12440 if (retval == 0)
411e1bfb
AM
12441 return FALSE;
12442
12443 if (toc_tls)
12444 {
951fd09b 12445 tls_mask = *toc_tls;
411e1bfb
AM
12446 if (r_type == R_PPC64_TOC16_DS
12447 || r_type == R_PPC64_TOC16_LO_DS)
81407a69
AM
12448 {
12449 if (tls_mask != 0
12450 && (tls_mask & (TLS_DTPREL | TLS_TPREL)) == 0)
12451 goto toctprel;
12452 }
411e1bfb 12453 else
951fd09b
AM
12454 {
12455 /* If we found a GD reloc pair, then we might be
12456 doing a GD->IE transition. */
12457 if (retval == 2)
12458 {
12459 tls_gd = TLS_TPRELGD;
12460 if (tls_mask != 0 && (tls_mask & TLS_GD) == 0)
102890f0 12461 goto tls_ldgd_opt;
951fd09b
AM
12462 }
12463 else if (retval == 3)
12464 {
12465 if (tls_mask != 0 && (tls_mask & TLS_LD) == 0)
102890f0 12466 goto tls_ldgd_opt;
951fd09b
AM
12467 }
12468 }
411e1bfb
AM
12469 }
12470 }
12471 break;
12472
9d6ded02
AM
12473 case R_PPC64_GOT_TPREL16_HI:
12474 case R_PPC64_GOT_TPREL16_HA:
12475 if (tls_mask != 0
12476 && (tls_mask & TLS_TPREL) == 0)
12477 {
12478 rel->r_offset -= d_offset;
12479 bfd_put_32 (output_bfd, NOP, contents + rel->r_offset);
12480 r_type = R_PPC64_NONE;
12481 rel->r_info = ELF64_R_INFO (r_symndx, r_type);
12482 }
12483 break;
12484
411e1bfb
AM
12485 case R_PPC64_GOT_TPREL16_DS:
12486 case R_PPC64_GOT_TPREL16_LO_DS:
951fd09b
AM
12487 if (tls_mask != 0
12488 && (tls_mask & TLS_TPREL) == 0)
411e1bfb 12489 {
81407a69 12490 toctprel:
4fe5ca5b 12491 insn = bfd_get_32 (output_bfd, contents + rel->r_offset - d_offset);
411e1bfb
AM
12492 insn &= 31 << 21;
12493 insn |= 0x3c0d0000; /* addis 0,13,0 */
4fe5ca5b 12494 bfd_put_32 (output_bfd, insn, contents + rel->r_offset - d_offset);
411e1bfb 12495 r_type = R_PPC64_TPREL16_HA;
0d4792f7
AM
12496 if (toc_symndx != 0)
12497 {
12498 rel->r_info = ELF64_R_INFO (toc_symndx, r_type);
3a71aa26 12499 rel->r_addend = toc_addend;
0d4792f7
AM
12500 /* We changed the symbol. Start over in order to
12501 get h, sym, sec etc. right. */
12502 rel--;
12503 continue;
12504 }
12505 else
12506 rel->r_info = ELF64_R_INFO (r_symndx, r_type);
411e1bfb
AM
12507 }
12508 break;
12509
12510 case R_PPC64_TLS:
951fd09b
AM
12511 if (tls_mask != 0
12512 && (tls_mask & TLS_TPREL) == 0)
411e1bfb 12513 {
411e1bfb 12514 insn = bfd_get_32 (output_bfd, contents + rel->r_offset);
2d0f3896
AM
12515 insn = _bfd_elf_ppc_at_tls_transform (insn, 13);
12516 if (insn == 0)
411e1bfb 12517 abort ();
411e1bfb 12518 bfd_put_32 (output_bfd, insn, contents + rel->r_offset);
411e1bfb 12519 /* Was PPC64_TLS which sits on insn boundary, now
4fe5ca5b
GM
12520 PPC64_TPREL16_LO which is at low-order half-word. */
12521 rel->r_offset += d_offset;
0d4792f7
AM
12522 r_type = R_PPC64_TPREL16_LO;
12523 if (toc_symndx != 0)
12524 {
12525 rel->r_info = ELF64_R_INFO (toc_symndx, r_type);
3a71aa26 12526 rel->r_addend = toc_addend;
0d4792f7
AM
12527 /* We changed the symbol. Start over in order to
12528 get h, sym, sec etc. right. */
12529 rel--;
12530 continue;
12531 }
12532 else
12533 rel->r_info = ELF64_R_INFO (r_symndx, r_type);
411e1bfb
AM
12534 }
12535 break;
12536
411e1bfb
AM
12537 case R_PPC64_GOT_TLSGD16_HI:
12538 case R_PPC64_GOT_TLSGD16_HA:
951fd09b
AM
12539 tls_gd = TLS_TPRELGD;
12540 if (tls_mask != 0 && (tls_mask & TLS_GD) == 0)
12541 goto tls_gdld_hi;
12542 break;
12543
411e1bfb
AM
12544 case R_PPC64_GOT_TLSLD16_HI:
12545 case R_PPC64_GOT_TLSLD16_HA:
951fd09b 12546 if (tls_mask != 0 && (tls_mask & TLS_LD) == 0)
411e1bfb 12547 {
951fd09b
AM
12548 tls_gdld_hi:
12549 if ((tls_mask & tls_gd) != 0)
12550 r_type = (((r_type - (R_PPC64_GOT_TLSGD16 & 3)) & 3)
12551 + R_PPC64_GOT_TPREL16_DS);
12552 else
411e1bfb 12553 {
4fe5ca5b 12554 rel->r_offset -= d_offset;
727ac201 12555 bfd_put_32 (output_bfd, NOP, contents + rel->r_offset);
951fd09b 12556 r_type = R_PPC64_NONE;
411e1bfb 12557 }
951fd09b 12558 rel->r_info = ELF64_R_INFO (r_symndx, r_type);
411e1bfb
AM
12559 }
12560 break;
12561
951fd09b
AM
12562 case R_PPC64_GOT_TLSGD16:
12563 case R_PPC64_GOT_TLSGD16_LO:
12564 tls_gd = TLS_TPRELGD;
12565 if (tls_mask != 0 && (tls_mask & TLS_GD) == 0)
102890f0 12566 goto tls_ldgd_opt;
951fd09b 12567 break;
411e1bfb 12568
951fd09b
AM
12569 case R_PPC64_GOT_TLSLD16:
12570 case R_PPC64_GOT_TLSLD16_LO:
12571 if (tls_mask != 0 && (tls_mask & TLS_LD) == 0)
12572 {
3a71aa26 12573 unsigned int insn1, insn2, insn3;
102890f0
AM
12574 bfd_vma offset;
12575
12576 tls_ldgd_opt:
727fc41e
AM
12577 offset = (bfd_vma) -1;
12578 /* If not using the newer R_PPC64_TLSGD/LD to mark
12579 __tls_get_addr calls, we must trust that the call
12580 stays with its arg setup insns, ie. that the next
12581 reloc is the __tls_get_addr call associated with
12582 the current reloc. Edit both insns. */
12583 if (input_section->has_tls_get_addr_call
12584 && rel + 1 < relend
12585 && branch_reloc_hash_match (input_bfd, rel + 1,
12586 htab->tls_get_addr,
12587 htab->tls_get_addr_fd))
12588 offset = rel[1].r_offset;
102890f0 12589 if ((tls_mask & tls_gd) != 0)
411e1bfb 12590 {
102890f0 12591 /* IE */
3a71aa26
AM
12592 insn1 = bfd_get_32 (output_bfd,
12593 contents + rel->r_offset - d_offset);
102890f0
AM
12594 insn1 &= (1 << 26) - (1 << 2);
12595 insn1 |= 58 << 26; /* ld */
12596 insn2 = 0x7c636a14; /* add 3,3,13 */
727fc41e 12597 if (offset != (bfd_vma) -1)
f58d5a2d 12598 rel[1].r_info = ELF64_R_INFO (STN_UNDEF, R_PPC64_NONE);
102890f0
AM
12599 if ((tls_mask & TLS_EXPLICIT) == 0)
12600 r_type = (((r_type - (R_PPC64_GOT_TLSGD16 & 3)) & 3)
12601 + R_PPC64_GOT_TPREL16_DS);
411e1bfb 12602 else
102890f0
AM
12603 r_type += R_PPC64_TOC16_DS - R_PPC64_TOC16;
12604 rel->r_info = ELF64_R_INFO (r_symndx, r_type);
12605 }
12606 else
12607 {
12608 /* LE */
12609 insn1 = 0x3c6d0000; /* addis 3,13,0 */
12610 insn2 = 0x38630000; /* addi 3,3,0 */
12611 if (tls_gd == 0)
951fd09b 12612 {
102890f0 12613 /* Was an LD reloc. */
1d483afe
AM
12614 if (toc_symndx)
12615 sec = local_sections[toc_symndx];
12616 for (r_symndx = 0;
12617 r_symndx < symtab_hdr->sh_info;
12618 r_symndx++)
12619 if (local_sections[r_symndx] == sec)
12620 break;
12621 if (r_symndx >= symtab_hdr->sh_info)
cf35638d 12622 r_symndx = STN_UNDEF;
102890f0 12623 rel->r_addend = htab->elf.tls_sec->vma + DTP_OFFSET;
cf35638d 12624 if (r_symndx != STN_UNDEF)
1d483afe
AM
12625 rel->r_addend -= (local_syms[r_symndx].st_value
12626 + sec->output_offset
12627 + sec->output_section->vma);
951fd09b 12628 }
102890f0 12629 else if (toc_symndx != 0)
3a71aa26
AM
12630 {
12631 r_symndx = toc_symndx;
12632 rel->r_addend = toc_addend;
12633 }
102890f0
AM
12634 r_type = R_PPC64_TPREL16_HA;
12635 rel->r_info = ELF64_R_INFO (r_symndx, r_type);
727fc41e
AM
12636 if (offset != (bfd_vma) -1)
12637 {
12638 rel[1].r_info = ELF64_R_INFO (r_symndx,
12639 R_PPC64_TPREL16_LO);
12640 rel[1].r_offset = offset + d_offset;
12641 rel[1].r_addend = rel->r_addend;
12642 }
102890f0 12643 }
3a71aa26
AM
12644 bfd_put_32 (output_bfd, insn1,
12645 contents + rel->r_offset - d_offset);
727fc41e
AM
12646 if (offset != (bfd_vma) -1)
12647 {
12648 insn3 = bfd_get_32 (output_bfd,
12649 contents + offset + 4);
12650 if (insn3 == NOP
12651 || insn3 == CROR_151515 || insn3 == CROR_313131)
12652 {
12653 rel[1].r_offset += 4;
12654 bfd_put_32 (output_bfd, insn2, contents + offset + 4);
12655 insn2 = NOP;
12656 }
12657 bfd_put_32 (output_bfd, insn2, contents + offset);
12658 }
12659 if ((tls_mask & tls_gd) == 0
12660 && (tls_gd == 0 || toc_symndx != 0))
12661 {
12662 /* We changed the symbol. Start over in order
12663 to get h, sym, sec etc. right. */
12664 rel--;
12665 continue;
12666 }
12667 }
12668 break;
12669
12670 case R_PPC64_TLSGD:
12671 if (tls_mask != 0 && (tls_mask & TLS_GD) == 0)
12672 {
12673 unsigned int insn2, insn3;
12674 bfd_vma offset = rel->r_offset;
12675
12676 if ((tls_mask & TLS_TPRELGD) != 0)
12677 {
12678 /* IE */
12679 r_type = R_PPC64_NONE;
12680 insn2 = 0x7c636a14; /* add 3,3,13 */
12681 }
12682 else
12683 {
12684 /* LE */
12685 if (toc_symndx != 0)
12686 {
12687 r_symndx = toc_symndx;
12688 rel->r_addend = toc_addend;
12689 }
12690 r_type = R_PPC64_TPREL16_LO;
12691 rel->r_offset = offset + d_offset;
12692 insn2 = 0x38630000; /* addi 3,3,0 */
12693 }
12694 rel->r_info = ELF64_R_INFO (r_symndx, r_type);
12695 /* Zap the reloc on the _tls_get_addr call too. */
12696 BFD_ASSERT (offset == rel[1].r_offset);
f58d5a2d 12697 rel[1].r_info = ELF64_R_INFO (STN_UNDEF, R_PPC64_NONE);
3a71aa26
AM
12698 insn3 = bfd_get_32 (output_bfd,
12699 contents + offset + 4);
102890f0
AM
12700 if (insn3 == NOP
12701 || insn3 == CROR_151515 || insn3 == CROR_313131)
12702 {
727fc41e 12703 rel->r_offset += 4;
3a71aa26
AM
12704 bfd_put_32 (output_bfd, insn2, contents + offset + 4);
12705 insn2 = NOP;
102890f0 12706 }
102890f0 12707 bfd_put_32 (output_bfd, insn2, contents + offset);
727fc41e 12708 if ((tls_mask & TLS_TPRELGD) == 0 && toc_symndx != 0)
102890f0 12709 {
102890f0
AM
12710 rel--;
12711 continue;
411e1bfb 12712 }
411e1bfb 12713 }
411e1bfb
AM
12714 break;
12715
727fc41e
AM
12716 case R_PPC64_TLSLD:
12717 if (tls_mask != 0 && (tls_mask & TLS_LD) == 0)
12718 {
12719 unsigned int insn2, insn3;
12720 bfd_vma offset = rel->r_offset;
12721
12722 if (toc_symndx)
12723 sec = local_sections[toc_symndx];
12724 for (r_symndx = 0;
12725 r_symndx < symtab_hdr->sh_info;
12726 r_symndx++)
12727 if (local_sections[r_symndx] == sec)
12728 break;
12729 if (r_symndx >= symtab_hdr->sh_info)
cf35638d 12730 r_symndx = STN_UNDEF;
727fc41e 12731 rel->r_addend = htab->elf.tls_sec->vma + DTP_OFFSET;
cf35638d 12732 if (r_symndx != STN_UNDEF)
727fc41e
AM
12733 rel->r_addend -= (local_syms[r_symndx].st_value
12734 + sec->output_offset
12735 + sec->output_section->vma);
12736
12737 r_type = R_PPC64_TPREL16_LO;
12738 rel->r_info = ELF64_R_INFO (r_symndx, r_type);
12739 rel->r_offset = offset + d_offset;
12740 /* Zap the reloc on the _tls_get_addr call too. */
12741 BFD_ASSERT (offset == rel[1].r_offset);
f58d5a2d 12742 rel[1].r_info = ELF64_R_INFO (STN_UNDEF, R_PPC64_NONE);
727fc41e
AM
12743 insn2 = 0x38630000; /* addi 3,3,0 */
12744 insn3 = bfd_get_32 (output_bfd,
12745 contents + offset + 4);
12746 if (insn3 == NOP
12747 || insn3 == CROR_151515 || insn3 == CROR_313131)
12748 {
12749 rel->r_offset += 4;
12750 bfd_put_32 (output_bfd, insn2, contents + offset + 4);
12751 insn2 = NOP;
12752 }
12753 bfd_put_32 (output_bfd, insn2, contents + offset);
12754 rel--;
12755 continue;
12756 }
12757 break;
12758
411e1bfb 12759 case R_PPC64_DTPMOD64:
951fd09b
AM
12760 if (rel + 1 < relend
12761 && rel[1].r_info == ELF64_R_INFO (r_symndx, R_PPC64_DTPREL64)
12762 && rel[1].r_offset == rel->r_offset + 8)
411e1bfb 12763 {
951fd09b
AM
12764 if ((tls_mask & TLS_GD) == 0)
12765 {
12766 rel[1].r_info = ELF64_R_INFO (r_symndx, R_PPC64_NONE);
12767 if ((tls_mask & TLS_TPRELGD) != 0)
12768 r_type = R_PPC64_TPREL64;
12769 else
12770 {
4ce794b7 12771 bfd_put_64 (output_bfd, 1, contents + rel->r_offset);
951fd09b
AM
12772 r_type = R_PPC64_NONE;
12773 }
12774 rel->r_info = ELF64_R_INFO (r_symndx, r_type);
12775 }
12776 }
12777 else
12778 {
12779 if ((tls_mask & TLS_LD) == 0)
411e1bfb 12780 {
4ce794b7 12781 bfd_put_64 (output_bfd, 1, contents + rel->r_offset);
411e1bfb 12782 r_type = R_PPC64_NONE;
951fd09b 12783 rel->r_info = ELF64_R_INFO (r_symndx, r_type);
411e1bfb 12784 }
411e1bfb
AM
12785 }
12786 break;
12787
12788 case R_PPC64_TPREL64:
951fd09b 12789 if ((tls_mask & TLS_TPREL) == 0)
411e1bfb
AM
12790 {
12791 r_type = R_PPC64_NONE;
12792 rel->r_info = ELF64_R_INFO (r_symndx, r_type);
12793 }
12794 break;
12795 }
12796
12797 /* Handle other relocations that tweak non-addend part of insn. */
86c76c7b 12798 insn = 0;
b25116a9
AM
12799 max_br_offset = 1 << 25;
12800 addend = rel->r_addend;
65f38f15 12801 switch (r_type)
5bd4f169
AM
12802 {
12803 default:
65f38f15 12804 break;
5bd4f169 12805
3b421ab3
AM
12806 case R_PPC64_TOCSAVE:
12807 if (relocation + addend == (rel->r_offset
12808 + input_section->output_offset
12809 + input_section->output_section->vma)
12810 && tocsave_find (htab, NO_INSERT,
12811 &local_syms, rel, input_bfd))
12812 {
12813 insn = bfd_get_32 (input_bfd, contents + rel->r_offset);
12814 if (insn == NOP
12815 || insn == CROR_151515 || insn == CROR_313131)
12816 bfd_put_32 (input_bfd, STD_R2_40R1,
12817 contents + rel->r_offset);
12818 }
12819 break;
12820
65f38f15
AM
12821 /* Branch taken prediction relocations. */
12822 case R_PPC64_ADDR14_BRTAKEN:
12823 case R_PPC64_REL14_BRTAKEN:
cedb70c5
KH
12824 insn = 0x01 << 21; /* 'y' or 't' bit, lowest bit of BO field. */
12825 /* Fall thru. */
65f38f15 12826
86c76c7b 12827 /* Branch not taken prediction relocations. */
65f38f15
AM
12828 case R_PPC64_ADDR14_BRNTAKEN:
12829 case R_PPC64_REL14_BRNTAKEN:
411e1bfb
AM
12830 insn |= bfd_get_32 (output_bfd,
12831 contents + rel->r_offset) & ~(0x01 << 21);
b25116a9 12832 /* Fall thru. */
86c76c7b 12833
b25116a9
AM
12834 case R_PPC64_REL14:
12835 max_br_offset = 1 << 15;
12836 /* Fall thru. */
5bd4f169 12837
65f38f15 12838 case R_PPC64_REL24:
ad8e1ba5
AM
12839 /* Calls to functions with a different TOC, such as calls to
12840 shared objects, need to alter the TOC pointer. This is
12841 done using a linkage stub. A REL24 branching to these
12842 linkage stubs needs to be followed by a nop, as the nop
12843 will be replaced with an instruction to restore the TOC
12844 base pointer. */
8387904d 12845 fdh = h;
b31867b6
AM
12846 if (h != NULL
12847 && h->oh != NULL
12848 && h->oh->is_func_descriptor)
12849 fdh = ppc_follow_link (h->oh);
6abec6bc
AM
12850 stub_entry = ppc_get_stub_entry (input_section, sec, fdh, rel, htab);
12851 if (stub_entry != NULL
ad8e1ba5 12852 && (stub_entry->stub_type == ppc_stub_plt_call
794e51c0 12853 || stub_entry->stub_type == ppc_stub_plt_call_r2save
ad8e1ba5
AM
12854 || stub_entry->stub_type == ppc_stub_plt_branch_r2off
12855 || stub_entry->stub_type == ppc_stub_long_branch_r2off))
41bd81ab 12856 {
b25116a9 12857 bfd_boolean can_plt_call = FALSE;
721956f4 12858
eea6121a 12859 if (rel->r_offset + 8 <= input_section->size)
41bd81ab 12860 {
b25116a9
AM
12861 unsigned long nop;
12862 nop = bfd_get_32 (input_bfd, contents + rel->r_offset + 4);
12863 if (nop == NOP
12864 || nop == CROR_151515 || nop == CROR_313131)
41bd81ab 12865 {
a7f2871e
AM
12866 if (h != NULL
12867 && (h == htab->tls_get_addr_fd
12868 || h == htab->tls_get_addr)
12869 && !htab->no_tls_get_addr_opt)
12870 {
12871 /* Special stub used, leave nop alone. */
12872 }
12873 else
12874 bfd_put_32 (input_bfd, LD_R2_40R1,
12875 contents + rel->r_offset + 4);
b25116a9 12876 can_plt_call = TRUE;
41bd81ab 12877 }
5bd4f169 12878 }
721956f4
AM
12879
12880 if (!can_plt_call)
12881 {
794e51c0
AM
12882 if (stub_entry->stub_type == ppc_stub_plt_call
12883 || stub_entry->stub_type == ppc_stub_plt_call_r2save)
ad8e1ba5
AM
12884 {
12885 /* If this is a plain branch rather than a branch
4fa1c237
AM
12886 and link, don't require a nop. However, don't
12887 allow tail calls in a shared library as they
12888 will result in r2 being corrupted. */
b25116a9
AM
12889 unsigned long br;
12890 br = bfd_get_32 (input_bfd, contents + rel->r_offset);
4fa1c237 12891 if (info->executable && (br & 1) == 0)
b25116a9 12892 can_plt_call = TRUE;
15b552e9
AM
12893 else
12894 stub_entry = NULL;
ad8e1ba5 12895 }
6ab189d5 12896 else if (h != NULL
039b3fef 12897 && strcmp (h->elf.root.root.string,
6ab189d5
AM
12898 ".__libc_start_main") == 0)
12899 {
12900 /* Allow crt1 branch to go via a toc adjusting stub. */
b25116a9 12901 can_plt_call = TRUE;
6ab189d5 12902 }
ad8e1ba5
AM
12903 else
12904 {
12905 if (strcmp (input_section->output_section->name,
12906 ".init") == 0
12907 || strcmp (input_section->output_section->name,
12908 ".fini") == 0)
25f53a85 12909 info->callbacks->einfo
8de848d8 12910 (_("%P: %H: automatic multiple TOCs "
ad8e1ba5 12911 "not supported using your crt files; "
25f53a85
AM
12912 "recompile with -mminimal-toc or upgrade gcc\n"),
12913 input_bfd, input_section, rel->r_offset);
ad8e1ba5 12914 else
25f53a85 12915 info->callbacks->einfo
8de848d8 12916 (_("%P: %H: sibling call optimization to `%s' "
ad8e1ba5
AM
12917 "does not allow automatic multiple TOCs; "
12918 "recompile with -mminimal-toc or "
12919 "-fno-optimize-sibling-calls, "
25f53a85
AM
12920 "or make `%s' extern\n"),
12921 input_bfd, input_section, rel->r_offset,
ad8e1ba5
AM
12922 sym_name,
12923 sym_name);
12924 bfd_set_error (bfd_error_bad_value);
12925 ret = FALSE;
12926 }
721956f4
AM
12927 }
12928
b25116a9 12929 if (can_plt_call
794e51c0
AM
12930 && (stub_entry->stub_type == ppc_stub_plt_call
12931 || stub_entry->stub_type == ppc_stub_plt_call_r2save))
b25116a9
AM
12932 unresolved_reloc = FALSE;
12933 }
12934
6abec6bc
AM
12935 if ((stub_entry == NULL
12936 || stub_entry->stub_type == ppc_stub_long_branch
12937 || stub_entry->stub_type == ppc_stub_plt_branch)
8387904d
AM
12938 && get_opd_info (sec) != NULL)
12939 {
12940 /* The branch destination is the value of the opd entry. */
4cc603a5
AM
12941 bfd_vma off = (relocation + addend
12942 - sec->output_section->vma
12943 - sec->output_offset);
aef36ac1 12944 bfd_vma dest = opd_entry_value (sec, off, NULL, NULL, FALSE);
8387904d
AM
12945 if (dest != (bfd_vma) -1)
12946 {
12947 relocation = dest;
12948 addend = 0;
12949 }
12950 }
12951
b25116a9
AM
12952 /* If the branch is out of reach we ought to have a long
12953 branch stub. */
12954 from = (rel->r_offset
12955 + input_section->output_offset
12956 + input_section->output_section->vma);
12957
6abec6bc
AM
12958 if (stub_entry != NULL
12959 && (stub_entry->stub_type == ppc_stub_long_branch
12960 || stub_entry->stub_type == ppc_stub_plt_branch)
12961 && (r_type == R_PPC64_ADDR14_BRTAKEN
12962 || r_type == R_PPC64_ADDR14_BRNTAKEN
12963 || (relocation + addend - from + max_br_offset
12964 < 2 * max_br_offset)))
12965 /* Don't use the stub if this branch is in range. */
12966 stub_entry = NULL;
b25116a9
AM
12967
12968 if (stub_entry != NULL)
12969 {
12970 /* Munge up the value and addend so that we call the stub
12971 rather than the procedure directly. */
12972 relocation = (stub_entry->stub_offset
12973 + stub_entry->stub_sec->output_offset
12974 + stub_entry->stub_sec->output_section->vma);
12975 addend = 0;
3b421ab3 12976
794e51c0
AM
12977 if ((stub_entry->stub_type == ppc_stub_plt_call
12978 || stub_entry->stub_type == ppc_stub_plt_call_r2save)
12979 && (ALWAYS_EMIT_R2SAVE
12980 || stub_entry->stub_type == ppc_stub_plt_call_r2save)
3b421ab3
AM
12981 && rel + 1 < relend
12982 && rel[1].r_offset == rel->r_offset + 4
12983 && ELF64_R_TYPE (rel[1].r_info) == R_PPC64_TOCSAVE)
12984 relocation += 4;
b25116a9
AM
12985 }
12986
12987 if (insn != 0)
12988 {
794e51c0 12989 if (is_isa_v2)
721956f4 12990 {
b25116a9
AM
12991 /* Set 'a' bit. This is 0b00010 in BO field for branch
12992 on CR(BI) insns (BO == 001at or 011at), and 0b01000
12993 for branch on CTR insns (BO == 1a00t or 1a01t). */
12994 if ((insn & (0x14 << 21)) == (0x04 << 21))
12995 insn |= 0x02 << 21;
12996 else if ((insn & (0x14 << 21)) == (0x10 << 21))
12997 insn |= 0x08 << 21;
12998 else
12999 break;
13000 }
13001 else
13002 {
13003 /* Invert 'y' bit if not the default. */
4cc603a5 13004 if ((bfd_signed_vma) (relocation + addend - from) < 0)
b25116a9 13005 insn ^= 0x01 << 21;
721956f4 13006 }
b25116a9
AM
13007
13008 bfd_put_32 (output_bfd, insn, contents + rel->r_offset);
5bd4f169 13009 }
e86ce104 13010
06da1e8e
AM
13011 /* NOP out calls to undefined weak functions.
13012 We can thus call a weak function without first
13013 checking whether the function is defined. */
b25116a9 13014 else if (h != NULL
039b3fef 13015 && h->elf.root.type == bfd_link_hash_undefweak
766bc656 13016 && h->elf.dynindx == -1
b25116a9
AM
13017 && r_type == R_PPC64_REL24
13018 && relocation == 0
4cc603a5 13019 && addend == 0)
e86ce104 13020 {
06da1e8e
AM
13021 bfd_put_32 (output_bfd, NOP, contents + rel->r_offset);
13022 continue;
e86ce104 13023 }
65f38f15
AM
13024 break;
13025 }
5bd4f169 13026
65f38f15 13027 /* Set `addend'. */
411e1bfb 13028 tls_type = 0;
65f38f15
AM
13029 switch (r_type)
13030 {
13031 default:
25f53a85 13032 info->callbacks->einfo
8de848d8 13033 (_("%P: %B: unknown relocation type %d for symbol %s\n"),
d003868e 13034 input_bfd, (int) r_type, sym_name);
5bd4f169 13035
65f38f15 13036 bfd_set_error (bfd_error_bad_value);
b34976b6 13037 ret = FALSE;
65f38f15 13038 continue;
5bd4f169 13039
65f38f15 13040 case R_PPC64_NONE:
411e1bfb 13041 case R_PPC64_TLS:
727fc41e
AM
13042 case R_PPC64_TLSGD:
13043 case R_PPC64_TLSLD:
3b421ab3 13044 case R_PPC64_TOCSAVE:
04c9666a
AM
13045 case R_PPC64_GNU_VTINHERIT:
13046 case R_PPC64_GNU_VTENTRY:
65f38f15 13047 continue;
5bd4f169
AM
13048
13049 /* GOT16 relocations. Like an ADDR16 using the symbol's
13050 address in the GOT as relocation value instead of the
411e1bfb 13051 symbol's value itself. Also, create a GOT entry for the
5bd4f169 13052 symbol and put the symbol value there. */
411e1bfb
AM
13053 case R_PPC64_GOT_TLSGD16:
13054 case R_PPC64_GOT_TLSGD16_LO:
13055 case R_PPC64_GOT_TLSGD16_HI:
13056 case R_PPC64_GOT_TLSGD16_HA:
951fd09b 13057 tls_type = TLS_TLS | TLS_GD;
411e1bfb
AM
13058 goto dogot;
13059
13060 case R_PPC64_GOT_TLSLD16:
13061 case R_PPC64_GOT_TLSLD16_LO:
13062 case R_PPC64_GOT_TLSLD16_HI:
13063 case R_PPC64_GOT_TLSLD16_HA:
951fd09b 13064 tls_type = TLS_TLS | TLS_LD;
411e1bfb
AM
13065 goto dogot;
13066
13067 case R_PPC64_GOT_TPREL16_DS:
13068 case R_PPC64_GOT_TPREL16_LO_DS:
13069 case R_PPC64_GOT_TPREL16_HI:
13070 case R_PPC64_GOT_TPREL16_HA:
13071 tls_type = TLS_TLS | TLS_TPREL;
13072 goto dogot;
13073
13074 case R_PPC64_GOT_DTPREL16_DS:
13075 case R_PPC64_GOT_DTPREL16_LO_DS:
13076 case R_PPC64_GOT_DTPREL16_HI:
13077 case R_PPC64_GOT_DTPREL16_HA:
13078 tls_type = TLS_TLS | TLS_DTPREL;
13079 goto dogot;
13080
65f38f15
AM
13081 case R_PPC64_GOT16:
13082 case R_PPC64_GOT16_LO:
13083 case R_PPC64_GOT16_HI:
13084 case R_PPC64_GOT16_HA:
13085 case R_PPC64_GOT16_DS:
13086 case R_PPC64_GOT16_LO_DS:
411e1bfb 13087 dogot:
5bd4f169
AM
13088 {
13089 /* Relocation is to the entry for this symbol in the global
13090 offset table. */
e717da7e 13091 asection *got;
d881513a 13092 bfd_vma *offp;
5bd4f169 13093 bfd_vma off;
d881513a 13094 unsigned long indx = 0;
927be08e 13095 struct got_entry *ent;
65f38f15 13096
d881513a
AM
13097 if (tls_type == (TLS_TLS | TLS_LD)
13098 && (h == NULL
f5385ebf 13099 || !h->elf.def_dynamic))
927be08e 13100 ent = ppc64_tlsld_got (input_bfd);
411e1bfb 13101 else
5bd4f169 13102 {
5bd4f169 13103
d881513a
AM
13104 if (h != NULL)
13105 {
13106 bfd_boolean dyn = htab->elf.dynamic_sections_created;
039b3fef
AM
13107 if (!WILL_CALL_FINISH_DYNAMIC_SYMBOL (dyn, info->shared,
13108 &h->elf)
d881513a 13109 || (info->shared
726d3ab0 13110 && SYMBOL_CALLS_LOCAL (info, &h->elf)))
d881513a
AM
13111 /* This is actually a static link, or it is a
13112 -Bsymbolic link and the symbol is defined
13113 locally, or the symbol was forced to be local
13114 because of a version file. */
13115 ;
13116 else
13117 {
039b3fef 13118 indx = h->elf.dynindx;
d881513a
AM
13119 unresolved_reloc = FALSE;
13120 }
039b3fef 13121 ent = h->elf.got.glist;
d881513a 13122 }
411e1bfb 13123 else
5bd4f169 13124 {
d881513a
AM
13125 if (local_got_ents == NULL)
13126 abort ();
13127 ent = local_got_ents[r_symndx];
5bd4f169 13128 }
d881513a
AM
13129
13130 for (; ent != NULL; ent = ent->next)
4cc603a5 13131 if (ent->addend == orig_addend
e717da7e 13132 && ent->owner == input_bfd
d881513a
AM
13133 && ent->tls_type == tls_type)
13134 break;
5bd4f169 13135 }
411e1bfb 13136
927be08e
AM
13137 if (ent == NULL)
13138 abort ();
13139 if (ent->is_indirect)
13140 ent = ent->got.ent;
13141 offp = &ent->got.offset;
13142 got = ppc64_elf_tdata (ent->owner)->got;
e717da7e
AM
13143 if (got == NULL)
13144 abort ();
13145
411e1bfb
AM
13146 /* The offset must always be a multiple of 8. We use the
13147 least significant bit to record whether we have already
13148 processed this entry. */
d881513a 13149 off = *offp;
411e1bfb
AM
13150 if ((off & 1) != 0)
13151 off &= ~1;
5bd4f169
AM
13152 else
13153 {
411e1bfb
AM
13154 /* Generate relocs for the dynamic linker, except in
13155 the case of TLSLD where we'll use one entry per
13156 module. */
25f23106
AM
13157 asection *relgot;
13158 bfd_boolean ifunc;
e717da7e 13159
d881513a 13160 *offp = off | 1;
25f23106
AM
13161 relgot = NULL;
13162 ifunc = (h != NULL
13163 ? h->elf.type == STT_GNU_IFUNC
13164 : ELF_ST_TYPE (sym->st_info) == STT_GNU_IFUNC);
4e795f50 13165 if ((info->shared || indx != 0)
927be08e
AM
13166 && (h == NULL
13167 || (tls_type == (TLS_TLS | TLS_LD)
13168 && !h->elf.def_dynamic)
039b3fef
AM
13169 || ELF_ST_VISIBILITY (h->elf.other) == STV_DEFAULT
13170 || h->elf.root.type != bfd_link_hash_undefweak))
927be08e 13171 relgot = ppc64_elf_tdata (ent->owner)->relgot;
25f23106
AM
13172 else if (ifunc)
13173 relgot = htab->reliplt;
13174 if (relgot != NULL)
5bd4f169 13175 {
e717da7e
AM
13176 outrel.r_offset = (got->output_section->vma
13177 + got->output_offset
411e1bfb 13178 + off);
4cc603a5 13179 outrel.r_addend = addend;
d881513a 13180 if (tls_type & (TLS_LD | TLS_GD))
5bd4f169 13181 {
411e1bfb 13182 outrel.r_addend = 0;
e515b051 13183 outrel.r_info = ELF64_R_INFO (indx, R_PPC64_DTPMOD64);
d881513a
AM
13184 if (tls_type == (TLS_TLS | TLS_GD))
13185 {
e717da7e
AM
13186 loc = relgot->contents;
13187 loc += (relgot->reloc_count++
d881513a
AM
13188 * sizeof (Elf64_External_Rela));
13189 bfd_elf64_swap_reloca_out (output_bfd,
13190 &outrel, loc);
e515b051 13191 outrel.r_offset += 8;
4cc603a5 13192 outrel.r_addend = addend;
d881513a
AM
13193 outrel.r_info
13194 = ELF64_R_INFO (indx, R_PPC64_DTPREL64);
d881513a 13195 }
411e1bfb 13196 }
951fd09b 13197 else if (tls_type == (TLS_TLS | TLS_DTPREL))
411e1bfb 13198 outrel.r_info = ELF64_R_INFO (indx, R_PPC64_DTPREL64);
951fd09b 13199 else if (tls_type == (TLS_TLS | TLS_TPREL))
411e1bfb 13200 outrel.r_info = ELF64_R_INFO (indx, R_PPC64_TPREL64);
25f23106
AM
13201 else if (indx != 0)
13202 outrel.r_info = ELF64_R_INFO (indx, R_PPC64_GLOB_DAT);
13203 else
81407a69 13204 {
25f23106
AM
13205 if (ifunc)
13206 outrel.r_info = ELF64_R_INFO (0, R_PPC64_IRELATIVE);
13207 else
13208 outrel.r_info = ELF64_R_INFO (0, R_PPC64_RELATIVE);
81407a69
AM
13209
13210 /* Write the .got section contents for the sake
13211 of prelink. */
e717da7e 13212 loc = got->contents + off;
23fbd6fa
JJ
13213 bfd_put_64 (output_bfd, outrel.r_addend + relocation,
13214 loc);
81407a69 13215 }
81407a69
AM
13216
13217 if (indx == 0 && tls_type != (TLS_TLS | TLS_LD))
e515b051
AM
13218 {
13219 outrel.r_addend += relocation;
13220 if (tls_type & (TLS_GD | TLS_DTPREL | TLS_TPREL))
e1918d23 13221 outrel.r_addend -= htab->elf.tls_sec->vma;
e515b051 13222 }
e717da7e
AM
13223 loc = relgot->contents;
13224 loc += (relgot->reloc_count++
411e1bfb
AM
13225 * sizeof (Elf64_External_Rela));
13226 bfd_elf64_swap_reloca_out (output_bfd, &outrel, loc);
13227 }
13228
ad8e1ba5 13229 /* Init the .got section contents here if we're not
81407a69 13230 emitting a reloc. */
d881513a 13231 else
411e1bfb 13232 {
4cc603a5 13233 relocation += addend;
7b609f53
AM
13234 if (tls_type == (TLS_TLS | TLS_LD))
13235 relocation = 1;
13236 else if (tls_type != 0)
411e1bfb 13237 {
e1918d23 13238 relocation -= htab->elf.tls_sec->vma + DTP_OFFSET;
7b609f53 13239 if (tls_type == (TLS_TLS | TLS_TPREL))
411e1bfb 13240 relocation += DTP_OFFSET - TP_OFFSET;
5bd4f169 13241
7b609f53
AM
13242 if (tls_type == (TLS_TLS | TLS_GD))
13243 {
13244 bfd_put_64 (output_bfd, relocation,
e717da7e 13245 got->contents + off + 8);
7b609f53
AM
13246 relocation = 1;
13247 }
411e1bfb 13248 }
7b609f53 13249
411e1bfb 13250 bfd_put_64 (output_bfd, relocation,
e717da7e 13251 got->contents + off);
5bd4f169
AM
13252 }
13253 }
13254
65f38f15
AM
13255 if (off >= (bfd_vma) -2)
13256 abort ();
13257
bf102f86
AM
13258 relocation = got->output_section->vma + got->output_offset + off;
13259 addend = -(TOCstart + htab->stub_group[input_section->id].toc_off);
5bd4f169 13260 }
65f38f15
AM
13261 break;
13262
13263 case R_PPC64_PLT16_HA:
13264 case R_PPC64_PLT16_HI:
13265 case R_PPC64_PLT16_LO:
13266 case R_PPC64_PLT32:
13267 case R_PPC64_PLT64:
13268 /* Relocation is to the entry for this symbol in the
13269 procedure linkage table. */
13270
13271 /* Resolve a PLT reloc against a local symbol directly,
13272 without using the procedure linkage table. */
13273 if (h == NULL)
13274 break;
13275
411e1bfb
AM
13276 /* It's possible that we didn't make a PLT entry for this
13277 symbol. This happens when statically linking PIC code,
13278 or when using -Bsymbolic. Go find a match if there is a
13279 PLT entry. */
4ce794b7 13280 if (htab->plt != NULL)
65f38f15 13281 {
411e1bfb 13282 struct plt_entry *ent;
039b3fef 13283 for (ent = h->elf.plt.plist; ent != NULL; ent = ent->next)
4cc603a5 13284 if (ent->addend == orig_addend
411e1bfb
AM
13285 && ent->plt.offset != (bfd_vma) -1)
13286 {
4ce794b7
AM
13287 relocation = (htab->plt->output_section->vma
13288 + htab->plt->output_offset
411e1bfb
AM
13289 + ent->plt.offset);
13290 unresolved_reloc = FALSE;
13291 }
65f38f15 13292 }
65f38f15 13293 break;
5bd4f169 13294
0b13192e
AM
13295 case R_PPC64_TOC:
13296 /* Relocation value is TOC base. */
13297 relocation = TOCstart;
cf35638d 13298 if (r_symndx == STN_UNDEF)
0b13192e 13299 relocation += htab->stub_group[input_section->id].toc_off;
8517fae7
AM
13300 else if (unresolved_reloc)
13301 ;
13302 else if (sec != NULL && sec->id <= htab->top_id)
0b13192e
AM
13303 relocation += htab->stub_group[sec->id].toc_off;
13304 else
13305 unresolved_reloc = TRUE;
ab96bf03 13306 goto dodyn;
0b13192e 13307
5bd4f169
AM
13308 /* TOC16 relocs. We want the offset relative to the TOC base,
13309 which is the address of the start of the TOC plus 0x8000.
13310 The TOC consists of sections .got, .toc, .tocbss, and .plt,
13311 in this order. */
65f38f15
AM
13312 case R_PPC64_TOC16:
13313 case R_PPC64_TOC16_LO:
13314 case R_PPC64_TOC16_HI:
13315 case R_PPC64_TOC16_DS:
13316 case R_PPC64_TOC16_LO_DS:
13317 case R_PPC64_TOC16_HA:
ad8e1ba5 13318 addend -= TOCstart + htab->stub_group[input_section->id].toc_off;
5bd4f169
AM
13319 break;
13320
13321 /* Relocate against the beginning of the section. */
65f38f15
AM
13322 case R_PPC64_SECTOFF:
13323 case R_PPC64_SECTOFF_LO:
13324 case R_PPC64_SECTOFF_HI:
13325 case R_PPC64_SECTOFF_DS:
13326 case R_PPC64_SECTOFF_LO_DS:
13327 case R_PPC64_SECTOFF_HA:
4ce794b7 13328 if (sec != NULL)
65f38f15 13329 addend -= sec->output_section->vma;
5bd4f169
AM
13330 break;
13331
25f23106
AM
13332 case R_PPC64_REL16:
13333 case R_PPC64_REL16_LO:
13334 case R_PPC64_REL16_HI:
13335 case R_PPC64_REL16_HA:
13336 break;
13337
721956f4
AM
13338 case R_PPC64_REL14:
13339 case R_PPC64_REL14_BRNTAKEN:
13340 case R_PPC64_REL14_BRTAKEN:
5d1634d7
AM
13341 case R_PPC64_REL24:
13342 break;
13343
411e1bfb
AM
13344 case R_PPC64_TPREL16:
13345 case R_PPC64_TPREL16_LO:
13346 case R_PPC64_TPREL16_HI:
13347 case R_PPC64_TPREL16_HA:
13348 case R_PPC64_TPREL16_DS:
13349 case R_PPC64_TPREL16_LO_DS:
13350 case R_PPC64_TPREL16_HIGHER:
13351 case R_PPC64_TPREL16_HIGHERA:
13352 case R_PPC64_TPREL16_HIGHEST:
13353 case R_PPC64_TPREL16_HIGHESTA:
766bc656
AM
13354 if (h != NULL
13355 && h->elf.root.type == bfd_link_hash_undefweak
13356 && h->elf.dynindx == -1)
13357 {
13358 /* Make this relocation against an undefined weak symbol
13359 resolve to zero. This is really just a tweak, since
13360 code using weak externs ought to check that they are
13361 defined before using them. */
13362 bfd_byte *p = contents + rel->r_offset - d_offset;
13363
13364 insn = bfd_get_32 (output_bfd, p);
13365 insn = _bfd_elf_ppc_at_tprel_transform (insn, 13);
13366 if (insn != 0)
13367 bfd_put_32 (output_bfd, insn, p);
13368 break;
13369 }
e1918d23 13370 addend -= htab->elf.tls_sec->vma + TP_OFFSET;
411e1bfb
AM
13371 if (info->shared)
13372 /* The TPREL16 relocs shouldn't really be used in shared
13373 libs as they will result in DT_TEXTREL being set, but
13374 support them anyway. */
13375 goto dodyn;
13376 break;
13377
13378 case R_PPC64_DTPREL16:
13379 case R_PPC64_DTPREL16_LO:
13380 case R_PPC64_DTPREL16_HI:
13381 case R_PPC64_DTPREL16_HA:
13382 case R_PPC64_DTPREL16_DS:
13383 case R_PPC64_DTPREL16_LO_DS:
13384 case R_PPC64_DTPREL16_HIGHER:
13385 case R_PPC64_DTPREL16_HIGHERA:
13386 case R_PPC64_DTPREL16_HIGHEST:
13387 case R_PPC64_DTPREL16_HIGHESTA:
e1918d23 13388 addend -= htab->elf.tls_sec->vma + DTP_OFFSET;
411e1bfb
AM
13389 break;
13390
e515b051
AM
13391 case R_PPC64_DTPMOD64:
13392 relocation = 1;
13393 addend = 0;
13394 goto dodyn;
13395
411e1bfb 13396 case R_PPC64_TPREL64:
e1918d23 13397 addend -= htab->elf.tls_sec->vma + TP_OFFSET;
411e1bfb
AM
13398 goto dodyn;
13399
13400 case R_PPC64_DTPREL64:
e1918d23 13401 addend -= htab->elf.tls_sec->vma + DTP_OFFSET;
411e1bfb
AM
13402 /* Fall thru */
13403
65f38f15
AM
13404 /* Relocations that may need to be propagated if this is a
13405 dynamic object. */
04c9666a 13406 case R_PPC64_REL30:
65f38f15
AM
13407 case R_PPC64_REL32:
13408 case R_PPC64_REL64:
13409 case R_PPC64_ADDR14:
13410 case R_PPC64_ADDR14_BRNTAKEN:
13411 case R_PPC64_ADDR14_BRTAKEN:
13412 case R_PPC64_ADDR16:
13413 case R_PPC64_ADDR16_DS:
13414 case R_PPC64_ADDR16_HA:
13415 case R_PPC64_ADDR16_HI:
13416 case R_PPC64_ADDR16_HIGHER:
13417 case R_PPC64_ADDR16_HIGHERA:
13418 case R_PPC64_ADDR16_HIGHEST:
13419 case R_PPC64_ADDR16_HIGHESTA:
13420 case R_PPC64_ADDR16_LO:
13421 case R_PPC64_ADDR16_LO_DS:
13422 case R_PPC64_ADDR24:
65f38f15
AM
13423 case R_PPC64_ADDR32:
13424 case R_PPC64_ADDR64:
13425 case R_PPC64_UADDR16:
13426 case R_PPC64_UADDR32:
13427 case R_PPC64_UADDR64:
411e1bfb 13428 dodyn:
5d1634d7 13429 if ((input_section->flags & SEC_ALLOC) == 0)
ec338859
AM
13430 break;
13431
41bd81ab
AM
13432 if (NO_OPD_RELOCS && is_opd)
13433 break;
13434
65f38f15 13435 if ((info->shared
4e795f50 13436 && (h == NULL
039b3fef
AM
13437 || ELF_ST_VISIBILITY (h->elf.other) == STV_DEFAULT
13438 || h->elf.root.type != bfd_link_hash_undefweak)
1d483afe 13439 && (must_be_dyn_reloc (info, r_type)
039b3fef 13440 || !SYMBOL_CALLS_LOCAL (info, &h->elf)))
f4656909
AM
13441 || (ELIMINATE_COPY_RELOCS
13442 && !info->shared
65f38f15 13443 && h != NULL
039b3fef 13444 && h->elf.dynindx != -1
f5385ebf 13445 && !h->elf.non_got_ref
25f23106
AM
13446 && !h->elf.def_regular)
13447 || (!info->shared
13448 && (h != NULL
13449 ? h->elf.type == STT_GNU_IFUNC
13450 : ELF_ST_TYPE (sym->st_info) == STT_GNU_IFUNC)))
65f38f15 13451 {
b34976b6 13452 bfd_boolean skip, relocate;
65f38f15 13453 asection *sreloc;
1cf1f670 13454 bfd_vma out_off;
65f38f15
AM
13455
13456 /* When generating a dynamic object, these relocations
13457 are copied into the output file to be resolved at run
13458 time. */
13459
b34976b6
AM
13460 skip = FALSE;
13461 relocate = FALSE;
65f38f15 13462
1cf1f670
AM
13463 out_off = _bfd_elf_section_offset (output_bfd, info,
13464 input_section, rel->r_offset);
13465 if (out_off == (bfd_vma) -1)
b34976b6 13466 skip = TRUE;
1cf1f670 13467 else if (out_off == (bfd_vma) -2)
b34976b6 13468 skip = TRUE, relocate = TRUE;
1cf1f670
AM
13469 out_off += (input_section->output_section->vma
13470 + input_section->output_offset);
13471 outrel.r_offset = out_off;
411e1bfb 13472 outrel.r_addend = rel->r_addend;
65f38f15 13473
1cf1f670
AM
13474 /* Optimize unaligned reloc use. */
13475 if ((r_type == R_PPC64_ADDR64 && (out_off & 7) != 0)
13476 || (r_type == R_PPC64_UADDR64 && (out_off & 7) == 0))
13477 r_type ^= R_PPC64_ADDR64 ^ R_PPC64_UADDR64;
13478 else if ((r_type == R_PPC64_ADDR32 && (out_off & 3) != 0)
13479 || (r_type == R_PPC64_UADDR32 && (out_off & 3) == 0))
13480 r_type ^= R_PPC64_ADDR32 ^ R_PPC64_UADDR32;
13481 else if ((r_type == R_PPC64_ADDR16 && (out_off & 1) != 0)
13482 || (r_type == R_PPC64_UADDR16 && (out_off & 1) == 0))
13483 r_type ^= R_PPC64_ADDR16 ^ R_PPC64_UADDR16;
13484
65f38f15 13485 if (skip)
0bb2d96a 13486 memset (&outrel, 0, sizeof outrel);
726d3ab0 13487 else if (!SYMBOL_CALLS_LOCAL (info, &h->elf)
0b13192e
AM
13488 && !is_opd
13489 && r_type != R_PPC64_TOC)
039b3fef 13490 outrel.r_info = ELF64_R_INFO (h->elf.dynindx, r_type);
65f38f15
AM
13491 else
13492 {
41bd81ab
AM
13493 /* This symbol is local, or marked to become local,
13494 or this is an opd section reloc which must point
13495 at a local function. */
65f38f15 13496 outrel.r_addend += relocation;
e86ce104 13497 if (r_type == R_PPC64_ADDR64 || r_type == R_PPC64_TOC)
65f38f15 13498 {
3fad3c7c 13499 if (is_opd && h != NULL)
afbe61cf
AM
13500 {
13501 /* Lie about opd entries. This case occurs
13502 when building shared libraries and we
13503 reference a function in another shared
3fad3c7c
AM
13504 lib. The same thing happens for a weak
13505 definition in an application that's
13506 overridden by a strong definition in a
13507 shared lib. (I believe this is a generic
13508 bug in binutils handling of weak syms.)
13509 In these cases we won't use the opd
1e2f5b6e 13510 entry in this lib. */
b34976b6 13511 unresolved_reloc = FALSE;
afbe61cf 13512 }
25f23106
AM
13513 if (!is_opd
13514 && r_type == R_PPC64_ADDR64
13515 && (h != NULL
13516 ? h->elf.type == STT_GNU_IFUNC
13517 : ELF_ST_TYPE (sym->st_info) == STT_GNU_IFUNC))
13518 outrel.r_info = ELF64_R_INFO (0, R_PPC64_IRELATIVE);
13519 else
13520 {
13521 outrel.r_info = ELF64_R_INFO (0, R_PPC64_RELATIVE);
81407a69 13522
25f23106
AM
13523 /* We need to relocate .opd contents for ld.so.
13524 Prelink also wants simple and consistent rules
13525 for relocs. This make all RELATIVE relocs have
13526 *r_offset equal to r_addend. */
13527 relocate = TRUE;
13528 }
65f38f15
AM
13529 }
13530 else
13531 {
13532 long indx = 0;
13533
25f23106
AM
13534 if (h != NULL
13535 ? h->elf.type == STT_GNU_IFUNC
13536 : ELF_ST_TYPE (sym->st_info) == STT_GNU_IFUNC)
13537 {
25f53a85 13538 info->callbacks->einfo
8de848d8 13539 (_("%P: %H: relocation %s for indirect "
25f53a85
AM
13540 "function %s unsupported\n"),
13541 input_bfd, input_section, rel->r_offset,
25f23106
AM
13542 ppc64_elf_howto_table[r_type]->name,
13543 sym_name);
13544 ret = FALSE;
13545 }
cf35638d 13546 else if (r_symndx == STN_UNDEF || bfd_is_abs_section (sec))
65f38f15
AM
13547 ;
13548 else if (sec == NULL || sec->owner == NULL)
13549 {
13550 bfd_set_error (bfd_error_bad_value);
b34976b6 13551 return FALSE;
65f38f15
AM
13552 }
13553 else
13554 {
13555 asection *osec;
13556
13557 osec = sec->output_section;
13558 indx = elf_section_data (osec)->dynindx;
13559
74541ad4
AM
13560 if (indx == 0)
13561 {
13562 if ((osec->flags & SEC_READONLY) == 0
13563 && htab->elf.data_index_section != NULL)
13564 osec = htab->elf.data_index_section;
13565 else
13566 osec = htab->elf.text_index_section;
13567 indx = elf_section_data (osec)->dynindx;
13568 }
13569 BFD_ASSERT (indx != 0);
13570
65f38f15
AM
13571 /* We are turning this relocation into one
13572 against a section symbol, so subtract out
13573 the output section's address but not the
13574 offset of the input section in the output
13575 section. */
13576 outrel.r_addend -= osec->vma;
13577 }
13578
13579 outrel.r_info = ELF64_R_INFO (indx, r_type);
13580 }
13581 }
13582
13583 sreloc = elf_section_data (input_section)->sreloc;
25f23106
AM
13584 if (!htab->elf.dynamic_sections_created)
13585 sreloc = htab->reliplt;
65f38f15
AM
13586 if (sreloc == NULL)
13587 abort ();
13588
dfbb6ac9
AM
13589 if (sreloc->reloc_count * sizeof (Elf64_External_Rela)
13590 >= sreloc->size)
13591 abort ();
947216bf
AM
13592 loc = sreloc->contents;
13593 loc += sreloc->reloc_count++ * sizeof (Elf64_External_Rela);
65f38f15
AM
13594 bfd_elf64_swap_reloca_out (output_bfd, &outrel, loc);
13595
13596 /* If this reloc is against an external symbol, it will
13597 be computed at runtime, so there's no need to do
81407a69
AM
13598 anything now. However, for the sake of prelink ensure
13599 that the section contents are a known value. */
65f38f15 13600 if (! relocate)
81407a69
AM
13601 {
13602 unresolved_reloc = FALSE;
13603 /* The value chosen here is quite arbitrary as ld.so
13604 ignores section contents except for the special
13605 case of .opd where the contents might be accessed
13606 before relocation. Choose zero, as that won't
13607 cause reloc overflow. */
13608 relocation = 0;
13609 addend = 0;
13610 /* Use *r_offset == r_addend for R_PPC64_ADDR64 relocs
13611 to improve backward compatibility with older
13612 versions of ld. */
13613 if (r_type == R_PPC64_ADDR64)
13614 addend = outrel.r_addend;
13615 /* Adjust pc_relative relocs to have zero in *r_offset. */
4ce794b7 13616 else if (ppc64_elf_howto_table[r_type]->pc_relative)
000732f7
AM
13617 addend = (input_section->output_section->vma
13618 + input_section->output_offset
13619 + rel->r_offset);
81407a69 13620 }
65f38f15 13621 }
5bd4f169
AM
13622 break;
13623
65f38f15
AM
13624 case R_PPC64_COPY:
13625 case R_PPC64_GLOB_DAT:
13626 case R_PPC64_JMP_SLOT:
25f23106 13627 case R_PPC64_JMP_IREL:
65f38f15
AM
13628 case R_PPC64_RELATIVE:
13629 /* We shouldn't ever see these dynamic relocs in relocatable
13630 files. */
ae9a127f 13631 /* Fall through. */
65f38f15
AM
13632
13633 case R_PPC64_PLTGOT16:
13634 case R_PPC64_PLTGOT16_DS:
13635 case R_PPC64_PLTGOT16_HA:
13636 case R_PPC64_PLTGOT16_HI:
13637 case R_PPC64_PLTGOT16_LO:
13638 case R_PPC64_PLTGOT16_LO_DS:
13639 case R_PPC64_PLTREL32:
13640 case R_PPC64_PLTREL64:
13641 /* These ones haven't been implemented yet. */
13642
25f53a85 13643 info->callbacks->einfo
8de848d8 13644 (_("%P: %B: relocation %s is not supported for symbol %s\n"),
d003868e 13645 input_bfd,
4ce794b7 13646 ppc64_elf_howto_table[r_type]->name, sym_name);
5bd4f169
AM
13647
13648 bfd_set_error (bfd_error_invalid_operation);
b34976b6 13649 ret = FALSE;
5bd4f169 13650 continue;
65f38f15 13651 }
5bd4f169 13652
67f0cbdb
AM
13653 /* Multi-instruction sequences that access the TOC can be
13654 optimized, eg. addis ra,r2,0; addi rb,ra,x;
13655 to nop; addi rb,r2,x; */
13656 switch (r_type)
13657 {
13658 default:
13659 break;
13660
13661 case R_PPC64_GOT_TLSLD16_HI:
13662 case R_PPC64_GOT_TLSGD16_HI:
13663 case R_PPC64_GOT_TPREL16_HI:
13664 case R_PPC64_GOT_DTPREL16_HI:
13665 case R_PPC64_GOT16_HI:
13666 case R_PPC64_TOC16_HI:
13667 /* These relocs would only be useful if building up an
13668 offset to later add to r2, perhaps in an indexed
13669 addressing mode instruction. Don't try to optimize.
13670 Unfortunately, the possibility of someone building up an
13671 offset like this or even with the HA relocs, means that
13672 we need to check the high insn when optimizing the low
13673 insn. */
13674 break;
13675
13676 case R_PPC64_GOT_TLSLD16_HA:
13677 case R_PPC64_GOT_TLSGD16_HA:
13678 case R_PPC64_GOT_TPREL16_HA:
13679 case R_PPC64_GOT_DTPREL16_HA:
13680 case R_PPC64_GOT16_HA:
13681 case R_PPC64_TOC16_HA:
98528052 13682 if (htab->do_toc_opt && relocation + addend + 0x8000 < 0x10000
560c8763 13683 && !ppc64_elf_tdata (input_bfd)->unexpected_toc_insn)
98528052
AM
13684 {
13685 bfd_byte *p = contents + (rel->r_offset & ~3);
13686 bfd_put_32 (input_bfd, NOP, p);
13687 }
67f0cbdb
AM
13688 break;
13689
13690 case R_PPC64_GOT_TLSLD16_LO:
13691 case R_PPC64_GOT_TLSGD16_LO:
13692 case R_PPC64_GOT_TPREL16_LO_DS:
13693 case R_PPC64_GOT_DTPREL16_LO_DS:
13694 case R_PPC64_GOT16_LO:
13695 case R_PPC64_GOT16_LO_DS:
13696 case R_PPC64_TOC16_LO:
13697 case R_PPC64_TOC16_LO_DS:
98528052 13698 if (htab->do_toc_opt && relocation + addend + 0x8000 < 0x10000
560c8763 13699 && !ppc64_elf_tdata (input_bfd)->unexpected_toc_insn)
67f0cbdb
AM
13700 {
13701 bfd_byte *p = contents + (rel->r_offset & ~3);
13702 insn = bfd_get_32 (input_bfd, p);
560c8763
AM
13703 if ((insn & (0x3f << 26)) == 12u << 26 /* addic */)
13704 {
13705 /* Transform addic to addi when we change reg. */
13706 insn &= ~((0x3f << 26) | (0x1f << 16));
13707 insn |= (14u << 26) | (2 << 16);
13708 }
13709 else
67f0cbdb 13710 {
98528052
AM
13711 insn &= ~(0x1f << 16);
13712 insn |= 2 << 16;
67f0cbdb 13713 }
560c8763 13714 bfd_put_32 (input_bfd, insn, p);
67f0cbdb
AM
13715 }
13716 break;
13717 }
13718
65f38f15
AM
13719 /* Do any further special processing. */
13720 switch (r_type)
13721 {
13722 default:
13723 break;
13724
13725 case R_PPC64_ADDR16_HA:
25f23106 13726 case R_PPC64_REL16_HA:
65f38f15
AM
13727 case R_PPC64_ADDR16_HIGHERA:
13728 case R_PPC64_ADDR16_HIGHESTA:
65f38f15
AM
13729 case R_PPC64_TOC16_HA:
13730 case R_PPC64_SECTOFF_HA:
411e1bfb
AM
13731 case R_PPC64_TPREL16_HA:
13732 case R_PPC64_DTPREL16_HA:
411e1bfb
AM
13733 case R_PPC64_TPREL16_HIGHER:
13734 case R_PPC64_TPREL16_HIGHERA:
13735 case R_PPC64_TPREL16_HIGHEST:
13736 case R_PPC64_TPREL16_HIGHESTA:
13737 case R_PPC64_DTPREL16_HIGHER:
13738 case R_PPC64_DTPREL16_HIGHERA:
13739 case R_PPC64_DTPREL16_HIGHEST:
13740 case R_PPC64_DTPREL16_HIGHESTA:
65f38f15
AM
13741 /* It's just possible that this symbol is a weak symbol
13742 that's not actually defined anywhere. In that case,
13743 'sec' would be NULL, and we should leave the symbol
13744 alone (it will be set to zero elsewhere in the link). */
5c5f6e17
AM
13745 if (sec == NULL)
13746 break;
13747 /* Fall thru */
13748
13749 case R_PPC64_GOT16_HA:
13750 case R_PPC64_PLTGOT16_HA:
13751 case R_PPC64_PLT16_HA:
13752 case R_PPC64_GOT_TLSGD16_HA:
13753 case R_PPC64_GOT_TLSLD16_HA:
13754 case R_PPC64_GOT_TPREL16_HA:
13755 case R_PPC64_GOT_DTPREL16_HA:
13756 /* Add 0x10000 if sign bit in 0:15 is set.
13757 Bits 0:15 are not used. */
13758 addend += 0x8000;
65f38f15
AM
13759 break;
13760
13761 case R_PPC64_ADDR16_DS:
13762 case R_PPC64_ADDR16_LO_DS:
13763 case R_PPC64_GOT16_DS:
13764 case R_PPC64_GOT16_LO_DS:
13765 case R_PPC64_PLT16_LO_DS:
13766 case R_PPC64_SECTOFF_DS:
13767 case R_PPC64_SECTOFF_LO_DS:
13768 case R_PPC64_TOC16_DS:
13769 case R_PPC64_TOC16_LO_DS:
13770 case R_PPC64_PLTGOT16_DS:
13771 case R_PPC64_PLTGOT16_LO_DS:
411e1bfb
AM
13772 case R_PPC64_GOT_TPREL16_DS:
13773 case R_PPC64_GOT_TPREL16_LO_DS:
13774 case R_PPC64_GOT_DTPREL16_DS:
13775 case R_PPC64_GOT_DTPREL16_LO_DS:
13776 case R_PPC64_TPREL16_DS:
13777 case R_PPC64_TPREL16_LO_DS:
13778 case R_PPC64_DTPREL16_DS:
13779 case R_PPC64_DTPREL16_LO_DS:
adadcc0c
AM
13780 insn = bfd_get_32 (input_bfd, contents + (rel->r_offset & ~3));
13781 mask = 3;
13782 /* If this reloc is against an lq insn, then the value must be
13783 a multiple of 16. This is somewhat of a hack, but the
13784 "correct" way to do this by defining _DQ forms of all the
13785 _DS relocs bloats all reloc switches in this file. It
13786 doesn't seem to make much sense to use any of these relocs
13787 in data, so testing the insn should be safe. */
494dac0c 13788 if ((insn & (0x3f << 26)) == (56u << 26))
adadcc0c
AM
13789 mask = 15;
13790 if (((relocation + addend) & mask) != 0)
65f38f15 13791 {
25f53a85 13792 info->callbacks->einfo
8de848d8 13793 (_("%P: %H: error: %s not a multiple of %u\n"),
25f53a85 13794 input_bfd, input_section, rel->r_offset,
4ce794b7 13795 ppc64_elf_howto_table[r_type]->name,
adadcc0c 13796 mask + 1);
65f38f15 13797 bfd_set_error (bfd_error_bad_value);
b34976b6 13798 ret = FALSE;
65f38f15
AM
13799 continue;
13800 }
13801 break;
5bd4f169
AM
13802 }
13803
239e1f3a
AM
13804 /* Dynamic relocs are not propagated for SEC_DEBUGGING sections
13805 because such sections are not SEC_ALLOC and thus ld.so will
13806 not process them. */
65f38f15 13807 if (unresolved_reloc
239e1f3a 13808 && !((input_section->flags & SEC_DEBUGGING) != 0
1d5316ab
AM
13809 && h->elf.def_dynamic)
13810 && _bfd_elf_section_offset (output_bfd, info, input_section,
13811 rel->r_offset) != (bfd_vma) -1)
9c07fe7c 13812 {
25f53a85 13813 info->callbacks->einfo
8de848d8 13814 (_("%P: %H: unresolvable %s relocation against symbol `%s'\n"),
25f53a85 13815 input_bfd, input_section, rel->r_offset,
7b609f53 13816 ppc64_elf_howto_table[(int) r_type]->name,
039b3fef 13817 h->elf.root.root.string);
b34976b6 13818 ret = FALSE;
9c07fe7c 13819 }
5bd4f169 13820
65f38f15 13821 r = _bfd_final_link_relocate (ppc64_elf_howto_table[(int) r_type],
5bd4f169
AM
13822 input_bfd,
13823 input_section,
13824 contents,
411e1bfb 13825 rel->r_offset,
5bd4f169
AM
13826 relocation,
13827 addend);
13828
ef60b7ff 13829 if (r != bfd_reloc_ok)
5bd4f169 13830 {
cd27b276
AM
13831 if (sym_name == NULL)
13832 sym_name = "(null)";
13833 if (r == bfd_reloc_overflow)
5bd4f169 13834 {
cd27b276
AM
13835 if (warned)
13836 continue;
13837 if (h != NULL
039b3fef 13838 && h->elf.root.type == bfd_link_hash_undefweak
4ce794b7 13839 && ppc64_elf_howto_table[r_type]->pc_relative)
5bd4f169
AM
13840 {
13841 /* Assume this is a call protected by other code that
13842 detects the symbol is undefined. If this is the case,
13843 we can safely ignore the overflow. If not, the
13844 program is hosed anyway, and a little warning isn't
13845 going to help. */
13846
13847 continue;
13848 }
13849
ef60b7ff 13850 if (!((*info->callbacks->reloc_overflow)
dfeffb9f
L
13851 (info, (h ? &h->elf.root : NULL), sym_name,
13852 ppc64_elf_howto_table[r_type]->name,
4cc603a5 13853 orig_addend, input_bfd, input_section, rel->r_offset)))
b34976b6 13854 return FALSE;
ef60b7ff
AM
13855 }
13856 else
13857 {
25f53a85 13858 info->callbacks->einfo
8de848d8 13859 (_("%P: %H: %s reloc against `%s': error %d\n"),
25f53a85 13860 input_bfd, input_section, rel->r_offset,
4ce794b7 13861 ppc64_elf_howto_table[r_type]->name,
7b609f53
AM
13862 sym_name,
13863 (int) r);
b34976b6 13864 ret = FALSE;
ef60b7ff 13865 }
5bd4f169 13866 }
5bd4f169
AM
13867 }
13868
645ea6a9
AM
13869 /* If we're emitting relocations, then shortly after this function
13870 returns, reloc offsets and addends for this section will be
13871 adjusted. Worse, reloc symbol indices will be for the output
8860955f
AM
13872 file rather than the input. Save a copy of the relocs for
13873 opd_entry_value. */
4cc603a5 13874 if (is_opd && (info->emitrelocations || info->relocatable))
8860955f
AM
13875 {
13876 bfd_size_type amt;
13877 amt = input_section->reloc_count * sizeof (Elf_Internal_Rela);
13878 rel = bfd_alloc (input_bfd, amt);
13879 BFD_ASSERT (ppc64_elf_tdata (input_bfd)->opd_relocs == NULL);
13880 ppc64_elf_tdata (input_bfd)->opd_relocs = rel;
13881 if (rel == NULL)
13882 return FALSE;
13883 memcpy (rel, relocs, amt);
13884 }
5bd4f169
AM
13885 return ret;
13886}
13887
754021d0
AM
13888/* Adjust the value of any local symbols in opd sections. */
13889
6e0b88f1 13890static int
754021d0
AM
13891ppc64_elf_output_symbol_hook (struct bfd_link_info *info,
13892 const char *name ATTRIBUTE_UNUSED,
13893 Elf_Internal_Sym *elfsym,
13894 asection *input_sec,
13895 struct elf_link_hash_entry *h)
13896{
74f0fb50
AM
13897 struct _opd_sec_data *opd;
13898 long adjust;
754021d0
AM
13899 bfd_vma value;
13900
4025353c 13901 if (h != NULL)
6e0b88f1 13902 return 1;
4025353c 13903
74f0fb50
AM
13904 opd = get_opd_info (input_sec);
13905 if (opd == NULL || opd->adjust == NULL)
6e0b88f1 13906 return 1;
754021d0
AM
13907
13908 value = elfsym->st_value - input_sec->output_offset;
13909 if (!info->relocatable)
13910 value -= input_sec->output_section->vma;
13911
74f0fb50 13912 adjust = opd->adjust[value / 8];
4025353c 13913 if (adjust == -1)
6e0b88f1
AM
13914 return 2;
13915
13916 elfsym->st_value += adjust;
13917 return 1;
754021d0
AM
13918}
13919
5bd4f169
AM
13920/* Finish up dynamic symbol handling. We set the contents of various
13921 dynamic sections here. */
13922
b34976b6 13923static bfd_boolean
4ce794b7
AM
13924ppc64_elf_finish_dynamic_symbol (bfd *output_bfd,
13925 struct bfd_link_info *info,
13926 struct elf_link_hash_entry *h,
ab6dce23 13927 Elf_Internal_Sym *sym ATTRIBUTE_UNUSED)
5bd4f169 13928{
65f38f15 13929 struct ppc_link_hash_table *htab;
8387904d
AM
13930 struct plt_entry *ent;
13931 Elf_Internal_Rela rela;
13932 bfd_byte *loc;
5bd4f169 13933
65f38f15 13934 htab = ppc_hash_table (info);
4dfe6ac6
NC
13935 if (htab == NULL)
13936 return FALSE;
5bd4f169 13937
8387904d
AM
13938 for (ent = h->plt.plist; ent != NULL; ent = ent->next)
13939 if (ent->plt.offset != (bfd_vma) -1)
13940 {
13941 /* This symbol has an entry in the procedure linkage
13942 table. Set it up. */
e054468f
AM
13943 if (!htab->elf.dynamic_sections_created
13944 || h->dynindx == -1)
13945 {
13946 BFD_ASSERT (h->type == STT_GNU_IFUNC
13947 && h->def_regular
13948 && (h->root.type == bfd_link_hash_defined
13949 || h->root.type == bfd_link_hash_defweak));
25f23106
AM
13950 rela.r_offset = (htab->iplt->output_section->vma
13951 + htab->iplt->output_offset
13952 + ent->plt.offset);
13953 rela.r_info = ELF64_R_INFO (0, R_PPC64_JMP_IREL);
e054468f
AM
13954 rela.r_addend = (h->root.u.def.value
13955 + h->root.u.def.section->output_offset
13956 + h->root.u.def.section->output_section->vma
13957 + ent->addend);
25f23106
AM
13958 loc = (htab->reliplt->contents
13959 + (htab->reliplt->reloc_count++
13960 * sizeof (Elf64_External_Rela)));
e054468f
AM
13961 }
13962 else
13963 {
25f23106
AM
13964 rela.r_offset = (htab->plt->output_section->vma
13965 + htab->plt->output_offset
13966 + ent->plt.offset);
e054468f
AM
13967 rela.r_info = ELF64_R_INFO (h->dynindx, R_PPC64_JMP_SLOT);
13968 rela.r_addend = ent->addend;
25f23106
AM
13969 loc = (htab->relplt->contents
13970 + ((ent->plt.offset - PLT_INITIAL_ENTRY_SIZE)
13971 / (PLT_ENTRY_SIZE / sizeof (Elf64_External_Rela))));
e054468f 13972 }
8387904d
AM
13973 bfd_elf64_swap_reloca_out (output_bfd, &rela, loc);
13974 }
5bd4f169 13975
f5385ebf 13976 if (h->needs_copy)
5bd4f169 13977 {
65f38f15 13978 /* This symbol needs a copy reloc. Set it up. */
5bd4f169 13979
65f38f15
AM
13980 if (h->dynindx == -1
13981 || (h->root.type != bfd_link_hash_defined
13982 && h->root.type != bfd_link_hash_defweak)
4ce794b7 13983 || htab->relbss == NULL)
65f38f15 13984 abort ();
5bd4f169
AM
13985
13986 rela.r_offset = (h->root.u.def.value
13987 + h->root.u.def.section->output_section->vma
13988 + h->root.u.def.section->output_offset);
13989 rela.r_info = ELF64_R_INFO (h->dynindx, R_PPC64_COPY);
13990 rela.r_addend = 0;
4ce794b7
AM
13991 loc = htab->relbss->contents;
13992 loc += htab->relbss->reloc_count++ * sizeof (Elf64_External_Rela);
65f38f15 13993 bfd_elf64_swap_reloca_out (output_bfd, &rela, loc);
5bd4f169
AM
13994 }
13995
b34976b6 13996 return TRUE;
5bd4f169
AM
13997}
13998
65f38f15
AM
13999/* Used to decide how to sort relocs in an optimal manner for the
14000 dynamic linker, before writing them out. */
14001
14002static enum elf_reloc_type_class
4ce794b7 14003ppc64_elf_reloc_type_class (const Elf_Internal_Rela *rela)
65f38f15 14004{
04c9666a 14005 enum elf_ppc64_reloc_type r_type;
a33d1f77 14006
4ce794b7 14007 r_type = ELF64_R_TYPE (rela->r_info);
a33d1f77 14008 switch (r_type)
65f38f15
AM
14009 {
14010 case R_PPC64_RELATIVE:
14011 return reloc_class_relative;
14012 case R_PPC64_JMP_SLOT:
14013 return reloc_class_plt;
14014 case R_PPC64_COPY:
14015 return reloc_class_copy;
14016 default:
14017 return reloc_class_normal;
14018 }
14019}
14020
5bd4f169
AM
14021/* Finish up the dynamic sections. */
14022
b34976b6 14023static bfd_boolean
4ce794b7
AM
14024ppc64_elf_finish_dynamic_sections (bfd *output_bfd,
14025 struct bfd_link_info *info)
5bd4f169 14026{
65f38f15
AM
14027 struct ppc_link_hash_table *htab;
14028 bfd *dynobj;
5bd4f169 14029 asection *sdyn;
5bd4f169 14030
65f38f15 14031 htab = ppc_hash_table (info);
4dfe6ac6
NC
14032 if (htab == NULL)
14033 return FALSE;
14034
65f38f15 14035 dynobj = htab->elf.dynobj;
5bd4f169
AM
14036 sdyn = bfd_get_section_by_name (dynobj, ".dynamic");
14037
65f38f15 14038 if (htab->elf.dynamic_sections_created)
5bd4f169 14039 {
5bd4f169
AM
14040 Elf64_External_Dyn *dyncon, *dynconend;
14041
4ce794b7 14042 if (sdyn == NULL || htab->got == NULL)
65f38f15 14043 abort ();
5bd4f169
AM
14044
14045 dyncon = (Elf64_External_Dyn *) sdyn->contents;
eea6121a 14046 dynconend = (Elf64_External_Dyn *) (sdyn->contents + sdyn->size);
5bd4f169
AM
14047 for (; dyncon < dynconend; dyncon++)
14048 {
14049 Elf_Internal_Dyn dyn;
19397422 14050 asection *s;
5bd4f169
AM
14051
14052 bfd_elf64_swap_dyn_in (dynobj, dyncon, &dyn);
14053
14054 switch (dyn.d_tag)
14055 {
65f38f15
AM
14056 default:
14057 continue;
5bd4f169 14058
5d1634d7 14059 case DT_PPC64_GLINK:
4ce794b7 14060 s = htab->glink;
6348e046 14061 dyn.d_un.d_ptr = s->output_section->vma + s->output_offset;
ad8e1ba5
AM
14062 /* We stupidly defined DT_PPC64_GLINK to be the start
14063 of glink rather than the first entry point, which is
14064 what ld.so needs, and now have a bigger stub to
14065 support automatic multiple TOCs. */
14066 dyn.d_un.d_ptr += GLINK_CALL_STUB_SIZE - 32;
5d1634d7
AM
14067 break;
14068
19397422
AM
14069 case DT_PPC64_OPD:
14070 s = bfd_get_section_by_name (output_bfd, ".opd");
6348e046
AM
14071 if (s == NULL)
14072 continue;
14073 dyn.d_un.d_ptr = s->vma;
19397422
AM
14074 break;
14075
14076 case DT_PPC64_OPDSZ:
14077 s = bfd_get_section_by_name (output_bfd, ".opd");
6348e046
AM
14078 if (s == NULL)
14079 continue;
eea6121a 14080 dyn.d_un.d_val = s->size;
19397422
AM
14081 break;
14082
65f38f15 14083 case DT_PLTGOT:
4ce794b7 14084 s = htab->plt;
6348e046 14085 dyn.d_un.d_ptr = s->output_section->vma + s->output_offset;
65f38f15
AM
14086 break;
14087
14088 case DT_JMPREL:
4ce794b7 14089 s = htab->relplt;
6348e046 14090 dyn.d_un.d_ptr = s->output_section->vma + s->output_offset;
65f38f15 14091 break;
5bd4f169 14092
65f38f15 14093 case DT_PLTRELSZ:
eea6121a 14094 dyn.d_un.d_val = htab->relplt->size;
5d1634d7
AM
14095 break;
14096
14097 case DT_RELASZ:
14098 /* Don't count procedure linkage table relocs in the
14099 overall reloc count. */
4ce794b7 14100 s = htab->relplt;
6348e046
AM
14101 if (s == NULL)
14102 continue;
eea6121a 14103 dyn.d_un.d_val -= s->size;
6348e046
AM
14104 break;
14105
14106 case DT_RELA:
14107 /* We may not be using the standard ELF linker script.
14108 If .rela.plt is the first .rela section, we adjust
14109 DT_RELA to not include it. */
4ce794b7 14110 s = htab->relplt;
6348e046
AM
14111 if (s == NULL)
14112 continue;
14113 if (dyn.d_un.d_ptr != s->output_section->vma + s->output_offset)
14114 continue;
eea6121a 14115 dyn.d_un.d_ptr += s->size;
65f38f15 14116 break;
5bd4f169 14117 }
5bd4f169 14118
65f38f15 14119 bfd_elf64_swap_dyn_out (output_bfd, &dyn, dyncon);
5bd4f169 14120 }
5bd4f169
AM
14121 }
14122
eea6121a 14123 if (htab->got != NULL && htab->got->size != 0)
5d1634d7
AM
14124 {
14125 /* Fill in the first entry in the global offset table.
14126 We use it to hold the link-time TOCbase. */
14127 bfd_put_64 (output_bfd,
60ee0d4a 14128 elf_gp (output_bfd) + TOC_BASE_OFF,
4ce794b7 14129 htab->got->contents);
5d1634d7
AM
14130
14131 /* Set .got entry size. */
4ce794b7 14132 elf_section_data (htab->got->output_section)->this_hdr.sh_entsize = 8;
5d1634d7
AM
14133 }
14134
eea6121a 14135 if (htab->plt != NULL && htab->plt->size != 0)
5d1634d7
AM
14136 {
14137 /* Set .plt entry size. */
4ce794b7 14138 elf_section_data (htab->plt->output_section)->this_hdr.sh_entsize
5d1634d7
AM
14139 = PLT_ENTRY_SIZE;
14140 }
14141
84f5d08e
AM
14142 /* brlt is SEC_LINKER_CREATED, so we need to write out relocs for
14143 brlt ourselves if emitrelocations. */
14144 if (htab->brlt != NULL
14145 && htab->brlt->reloc_count != 0
14146 && !_bfd_elf_link_output_relocs (output_bfd,
14147 htab->brlt,
d4730f92 14148 elf_section_data (htab->brlt)->rela.hdr,
84f5d08e
AM
14149 elf_section_data (htab->brlt)->relocs,
14150 NULL))
14151 return FALSE;
14152
176a0d42
AM
14153 if (htab->glink != NULL
14154 && htab->glink->reloc_count != 0
14155 && !_bfd_elf_link_output_relocs (output_bfd,
14156 htab->glink,
d4730f92 14157 elf_section_data (htab->glink)->rela.hdr,
176a0d42
AM
14158 elf_section_data (htab->glink)->relocs,
14159 NULL))
14160 return FALSE;
14161
58d180e8
AM
14162
14163 if (htab->glink_eh_frame != NULL
dbaa2011 14164 && htab->glink_eh_frame->sec_info_type == SEC_INFO_TYPE_EH_FRAME
58d180e8
AM
14165 && !_bfd_elf_write_section_eh_frame (output_bfd, info,
14166 htab->glink_eh_frame,
14167 htab->glink_eh_frame->contents))
14168 return FALSE;
14169
e717da7e 14170 /* We need to handle writing out multiple GOT sections ourselves,
7b53ace3
AM
14171 since we didn't add them to DYNOBJ. We know dynobj is the first
14172 bfd. */
e717da7e
AM
14173 while ((dynobj = dynobj->link_next) != NULL)
14174 {
14175 asection *s;
7b53ace3 14176
0c8d6e5c 14177 if (!is_ppc64_elf (dynobj))
7b53ace3
AM
14178 continue;
14179
e717da7e
AM
14180 s = ppc64_elf_tdata (dynobj)->got;
14181 if (s != NULL
eea6121a 14182 && s->size != 0
e717da7e
AM
14183 && s->output_section != bfd_abs_section_ptr
14184 && !bfd_set_section_contents (output_bfd, s->output_section,
14185 s->contents, s->output_offset,
eea6121a 14186 s->size))
e717da7e
AM
14187 return FALSE;
14188 s = ppc64_elf_tdata (dynobj)->relgot;
14189 if (s != NULL
eea6121a 14190 && s->size != 0
e717da7e
AM
14191 && s->output_section != bfd_abs_section_ptr
14192 && !bfd_set_section_contents (output_bfd, s->output_section,
14193 s->contents, s->output_offset,
eea6121a 14194 s->size))
e717da7e
AM
14195 return FALSE;
14196 }
f6c52c13 14197
b34976b6 14198 return TRUE;
5bd4f169
AM
14199}
14200
5bd4f169 14201#include "elf64-target.h"
7b8e7dad
AM
14202
14203/* FreeBSD support */
14204
14205#undef TARGET_LITTLE_SYM
14206#undef TARGET_LITTLE_NAME
14207
14208#undef TARGET_BIG_SYM
14209#define TARGET_BIG_SYM bfd_elf64_powerpc_freebsd_vec
14210#undef TARGET_BIG_NAME
14211#define TARGET_BIG_NAME "elf64-powerpc-freebsd"
14212
14213#undef ELF_OSABI
14214#define ELF_OSABI ELFOSABI_FREEBSD
14215
14216#undef elf64_bed
14217#define elf64_bed elf64_powerpc_fbsd_bed
14218
14219#include "elf64-target.h"
14220
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