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environ-selftests: Ignore -Wself-move warning
[deliverable/binutils-gdb.git] / bfd / elf64-x86-64.c
CommitLineData
351f65ca 1/* X86-64 specific support for ELF
2571583a 2 Copyright (C) 2000-2017 Free Software Foundation, Inc.
8d88c4ca
NC		 3 Contributed by Jan Hubicka <jh@suse.cz>.
4
ae9a127f 5 This file is part of BFD, the Binary File Descriptor library.
8d88c4ca 6
ae9a127f
NC		 7 This program is free software; you can redistribute it and/or modify
8 it under the terms of the GNU General Public License as published by
cd123cb7 9 the Free Software Foundation; either version 3 of the License, or
ae9a127f 10 (at your option) any later version.
8d88c4ca 11
ae9a127f
NC		 12 This program is distributed in the hope that it will be useful,
13 but WITHOUT ANY WARRANTY; without even the implied warranty of
14 MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
15 GNU General Public License for more details.
8d88c4ca 16
ae9a127f
NC		 17 You should have received a copy of the GNU General Public License
18 along with this program; if not, write to the Free Software
cd123cb7
NC		 19 Foundation, Inc., 51 Franklin Street - Fifth Floor, Boston,
20 MA 02110-1301, USA. */
8d88c4ca 21
8d88c4ca 22#include "sysdep.h"
3db64b00 23#include "bfd.h"
c434dee6 24#include "bfdlink.h"
8d88c4ca
NC		 25#include "libbfd.h"
26#include "elf-bfd.h"
5a68afcf 27#include "elf-nacl.h"
142411ca 28#include "bfd_stdint.h"
c25bc9fc
L		 29#include "objalloc.h"
30#include "hashtab.h"
e41b3a13 31#include "dwarf2.h"
d7921315 32#include "libiberty.h"
8d88c4ca 33
56ceb5b5 34#include "opcode/i386.h"
8d88c4ca
NC		 35#include "elf/x86-64.h"
36
8fd79e71
L		 37#ifdef CORE_HEADER
38#include <stdarg.h>
39#include CORE_HEADER
40#endif
41
8d88c4ca
NC		 42/* In case we're on a 32-bit machine, construct a 64-bit "-1" value. */
43#define MINUS_ONE (~ (bfd_vma) 0)
44
351f65ca
L		 45/* Since both 32-bit and 64-bit x86-64 encode relocation type in the
46 identical manner, we use ELF32_R_TYPE instead of ELF64_R_TYPE to get
47 relocation type. We also use ELF_ST_TYPE instead of ELF64_ST_TYPE
48 since they are the same. */
49
50#define ABI_64_P(abfd) \
51 (get_elf_backend_data (abfd)->s->elfclass == ELFCLASS64)
52
8d88c4ca 53/* The relocation "howto" table. Order of fields:
7b81dfbb
AJ		 54 type, rightshift, size, bitsize, pc_relative, bitpos, complain_on_overflow,
55 special_function, name, partial_inplace, src_mask, dst_mask, pcrel_offset. */
70256ad8
AJ		 56static reloc_howto_type x86_64_elf_howto_table[] =
57{
6346d5ca 58 HOWTO(R_X86_64_NONE, 0, 3, 0, FALSE, 0, complain_overflow_dont,
b34976b6
AM		 59 bfd_elf_generic_reloc, "R_X86_64_NONE", FALSE, 0x00000000, 0x00000000,
60 FALSE),
61 HOWTO(R_X86_64_64, 0, 4, 64, FALSE, 0, complain_overflow_bitfield,
62 bfd_elf_generic_reloc, "R_X86_64_64", FALSE, MINUS_ONE, MINUS_ONE,
63 FALSE),
64 HOWTO(R_X86_64_PC32, 0, 2, 32, TRUE, 0, complain_overflow_signed,
65 bfd_elf_generic_reloc, "R_X86_64_PC32", FALSE, 0xffffffff, 0xffffffff,
66 TRUE),
67 HOWTO(R_X86_64_GOT32, 0, 2, 32, FALSE, 0, complain_overflow_signed,
68 bfd_elf_generic_reloc, "R_X86_64_GOT32", FALSE, 0xffffffff, 0xffffffff,
69 FALSE),
70 HOWTO(R_X86_64_PLT32, 0, 2, 32, TRUE, 0, complain_overflow_signed,
71 bfd_elf_generic_reloc, "R_X86_64_PLT32", FALSE, 0xffffffff, 0xffffffff,
72 TRUE),
73 HOWTO(R_X86_64_COPY, 0, 2, 32, FALSE, 0, complain_overflow_bitfield,
74 bfd_elf_generic_reloc, "R_X86_64_COPY", FALSE, 0xffffffff, 0xffffffff,
75 FALSE),
76 HOWTO(R_X86_64_GLOB_DAT, 0, 4, 64, FALSE, 0, complain_overflow_bitfield,
77 bfd_elf_generic_reloc, "R_X86_64_GLOB_DAT", FALSE, MINUS_ONE,
78 MINUS_ONE, FALSE),
79 HOWTO(R_X86_64_JUMP_SLOT, 0, 4, 64, FALSE, 0, complain_overflow_bitfield,
80 bfd_elf_generic_reloc, "R_X86_64_JUMP_SLOT", FALSE, MINUS_ONE,
81 MINUS_ONE, FALSE),
82 HOWTO(R_X86_64_RELATIVE, 0, 4, 64, FALSE, 0, complain_overflow_bitfield,
83 bfd_elf_generic_reloc, "R_X86_64_RELATIVE", FALSE, MINUS_ONE,
84 MINUS_ONE, FALSE),
85 HOWTO(R_X86_64_GOTPCREL, 0, 2, 32, TRUE, 0, complain_overflow_signed,
86 bfd_elf_generic_reloc, "R_X86_64_GOTPCREL", FALSE, 0xffffffff,
87 0xffffffff, TRUE),
88 HOWTO(R_X86_64_32, 0, 2, 32, FALSE, 0, complain_overflow_unsigned,
89 bfd_elf_generic_reloc, "R_X86_64_32", FALSE, 0xffffffff, 0xffffffff,
90 FALSE),
91 HOWTO(R_X86_64_32S, 0, 2, 32, FALSE, 0, complain_overflow_signed,
92 bfd_elf_generic_reloc, "R_X86_64_32S", FALSE, 0xffffffff, 0xffffffff,
93 FALSE),
94 HOWTO(R_X86_64_16, 0, 1, 16, FALSE, 0, complain_overflow_bitfield,
95 bfd_elf_generic_reloc, "R_X86_64_16", FALSE, 0xffff, 0xffff, FALSE),
b0360d8c 96 HOWTO(R_X86_64_PC16,0, 1, 16, TRUE, 0, complain_overflow_bitfield,
b34976b6 97 bfd_elf_generic_reloc, "R_X86_64_PC16", FALSE, 0xffff, 0xffff, TRUE),
ac2aa337 98 HOWTO(R_X86_64_8, 0, 0, 8, FALSE, 0, complain_overflow_bitfield,
b34976b6
AM		 99 bfd_elf_generic_reloc, "R_X86_64_8", FALSE, 0xff, 0xff, FALSE),
100 HOWTO(R_X86_64_PC8, 0, 0, 8, TRUE, 0, complain_overflow_signed,
101 bfd_elf_generic_reloc, "R_X86_64_PC8", FALSE, 0xff, 0xff, TRUE),
102 HOWTO(R_X86_64_DTPMOD64, 0, 4, 64, FALSE, 0, complain_overflow_bitfield,
103 bfd_elf_generic_reloc, "R_X86_64_DTPMOD64", FALSE, MINUS_ONE,
104 MINUS_ONE, FALSE),
105 HOWTO(R_X86_64_DTPOFF64, 0, 4, 64, FALSE, 0, complain_overflow_bitfield,
106 bfd_elf_generic_reloc, "R_X86_64_DTPOFF64", FALSE, MINUS_ONE,
107 MINUS_ONE, FALSE),
108 HOWTO(R_X86_64_TPOFF64, 0, 4, 64, FALSE, 0, complain_overflow_bitfield,
109 bfd_elf_generic_reloc, "R_X86_64_TPOFF64", FALSE, MINUS_ONE,
110 MINUS_ONE, FALSE),
111 HOWTO(R_X86_64_TLSGD, 0, 2, 32, TRUE, 0, complain_overflow_signed,
112 bfd_elf_generic_reloc, "R_X86_64_TLSGD", FALSE, 0xffffffff,
113 0xffffffff, TRUE),
114 HOWTO(R_X86_64_TLSLD, 0, 2, 32, TRUE, 0, complain_overflow_signed,
115 bfd_elf_generic_reloc, "R_X86_64_TLSLD", FALSE, 0xffffffff,
116 0xffffffff, TRUE),
ac2aa337 117 HOWTO(R_X86_64_DTPOFF32, 0, 2, 32, FALSE, 0, complain_overflow_signed,
b34976b6
AM		 118 bfd_elf_generic_reloc, "R_X86_64_DTPOFF32", FALSE, 0xffffffff,
119 0xffffffff, FALSE),
120 HOWTO(R_X86_64_GOTTPOFF, 0, 2, 32, TRUE, 0, complain_overflow_signed,
121 bfd_elf_generic_reloc, "R_X86_64_GOTTPOFF", FALSE, 0xffffffff,
122 0xffffffff, TRUE),
123 HOWTO(R_X86_64_TPOFF32, 0, 2, 32, FALSE, 0, complain_overflow_signed,
124 bfd_elf_generic_reloc, "R_X86_64_TPOFF32", FALSE, 0xffffffff,
125 0xffffffff, FALSE),
d6ab8113
JB		 126 HOWTO(R_X86_64_PC64, 0, 4, 64, TRUE, 0, complain_overflow_bitfield,
127 bfd_elf_generic_reloc, "R_X86_64_PC64", FALSE, MINUS_ONE, MINUS_ONE,
128 TRUE),
129 HOWTO(R_X86_64_GOTOFF64, 0, 4, 64, FALSE, 0, complain_overflow_bitfield,
130 bfd_elf_generic_reloc, "R_X86_64_GOTOFF64",
131 FALSE, MINUS_ONE, MINUS_ONE, FALSE),
132 HOWTO(R_X86_64_GOTPC32, 0, 2, 32, TRUE, 0, complain_overflow_signed,
133 bfd_elf_generic_reloc, "R_X86_64_GOTPC32",
134 FALSE, 0xffffffff, 0xffffffff, TRUE),
7b81dfbb
AJ		 135 HOWTO(R_X86_64_GOT64, 0, 4, 64, FALSE, 0, complain_overflow_signed,
136 bfd_elf_generic_reloc, "R_X86_64_GOT64", FALSE, MINUS_ONE, MINUS_ONE,
137 FALSE),
138 HOWTO(R_X86_64_GOTPCREL64, 0, 4, 64, TRUE, 0, complain_overflow_signed,
139 bfd_elf_generic_reloc, "R_X86_64_GOTPCREL64", FALSE, MINUS_ONE,
140 MINUS_ONE, TRUE),
141 HOWTO(R_X86_64_GOTPC64, 0, 4, 64, TRUE, 0, complain_overflow_signed,
142 bfd_elf_generic_reloc, "R_X86_64_GOTPC64",
143 FALSE, MINUS_ONE, MINUS_ONE, TRUE),
144 HOWTO(R_X86_64_GOTPLT64, 0, 4, 64, FALSE, 0, complain_overflow_signed,
145 bfd_elf_generic_reloc, "R_X86_64_GOTPLT64", FALSE, MINUS_ONE,
146 MINUS_ONE, FALSE),
147 HOWTO(R_X86_64_PLTOFF64, 0, 4, 64, FALSE, 0, complain_overflow_signed,
148 bfd_elf_generic_reloc, "R_X86_64_PLTOFF64", FALSE, MINUS_ONE,
149 MINUS_ONE, FALSE),
1788fc08
L		 150 HOWTO(R_X86_64_SIZE32, 0, 2, 32, FALSE, 0, complain_overflow_unsigned,
151 bfd_elf_generic_reloc, "R_X86_64_SIZE32", FALSE, 0xffffffff, 0xffffffff,
152 FALSE),
153 HOWTO(R_X86_64_SIZE64, 0, 4, 64, FALSE, 0, complain_overflow_unsigned,
154 bfd_elf_generic_reloc, "R_X86_64_SIZE64", FALSE, MINUS_ONE, MINUS_ONE,
155 FALSE),
67a4f2b7
AO		 156 HOWTO(R_X86_64_GOTPC32_TLSDESC, 0, 2, 32, TRUE, 0,
157 complain_overflow_bitfield, bfd_elf_generic_reloc,
158 "R_X86_64_GOTPC32_TLSDESC",
159 FALSE, 0xffffffff, 0xffffffff, TRUE),
160 HOWTO(R_X86_64_TLSDESC_CALL, 0, 0, 0, FALSE, 0,
161 complain_overflow_dont, bfd_elf_generic_reloc,
162 "R_X86_64_TLSDESC_CALL",
163 FALSE, 0, 0, FALSE),
164 HOWTO(R_X86_64_TLSDESC, 0, 4, 64, FALSE, 0,
165 complain_overflow_bitfield, bfd_elf_generic_reloc,
166 "R_X86_64_TLSDESC",
167 FALSE, MINUS_ONE, MINUS_ONE, FALSE),
cbe950e9
L		 168 HOWTO(R_X86_64_IRELATIVE, 0, 4, 64, FALSE, 0, complain_overflow_bitfield,
169 bfd_elf_generic_reloc, "R_X86_64_IRELATIVE", FALSE, MINUS_ONE,
170 MINUS_ONE, FALSE),
64d25c44
L		 171 HOWTO(R_X86_64_RELATIVE64, 0, 4, 64, FALSE, 0, complain_overflow_bitfield,
172 bfd_elf_generic_reloc, "R_X86_64_RELATIVE64", FALSE, MINUS_ONE,
173 MINUS_ONE, FALSE),
c3320543
L		 174 HOWTO(R_X86_64_PC32_BND, 0, 2, 32, TRUE, 0, complain_overflow_signed,
175 bfd_elf_generic_reloc, "R_X86_64_PC32_BND", FALSE, 0xffffffff, 0xffffffff,
176 TRUE),
177 HOWTO(R_X86_64_PLT32_BND, 0, 2, 32, TRUE, 0, complain_overflow_signed,
178 bfd_elf_generic_reloc, "R_X86_64_PLT32_BND", FALSE, 0xffffffff, 0xffffffff,
179 TRUE),
56ceb5b5
L		 180 HOWTO(R_X86_64_GOTPCRELX, 0, 2, 32, TRUE, 0, complain_overflow_signed,
181 bfd_elf_generic_reloc, "R_X86_64_GOTPCRELX", FALSE, 0xffffffff,
182 0xffffffff, TRUE),
183 HOWTO(R_X86_64_REX_GOTPCRELX, 0, 2, 32, TRUE, 0, complain_overflow_signed,
184 bfd_elf_generic_reloc, "R_X86_64_REX_GOTPCRELX", FALSE, 0xffffffff,
185 0xffffffff, TRUE),
fe4770f4 186
a33d77bc
JB		 187 /* We have a gap in the reloc numbers here.
188 R_X86_64_standard counts the number up to this point, and
189 R_X86_64_vt_offset is the value to subtract from a reloc type of
190 R_X86_64_GNU_VT* to form an index into this table. */
56ceb5b5 191#define R_X86_64_standard (R_X86_64_REX_GOTPCRELX + 1)
a33d77bc
JB		 192#define R_X86_64_vt_offset (R_X86_64_GNU_VTINHERIT - R_X86_64_standard)
193
fe4770f4 194/* GNU extension to record C++ vtable hierarchy. */
b34976b6
AM		 195 HOWTO (R_X86_64_GNU_VTINHERIT, 0, 4, 0, FALSE, 0, complain_overflow_dont,
196 NULL, "R_X86_64_GNU_VTINHERIT", FALSE, 0, 0, FALSE),
fe4770f4
AJ		 197
198/* GNU extension to record C++ vtable member usage. */
b34976b6
AM		 199 HOWTO (R_X86_64_GNU_VTENTRY, 0, 4, 0, FALSE, 0, complain_overflow_dont,
200 _bfd_elf_rel_vtable_reloc_fn, "R_X86_64_GNU_VTENTRY", FALSE, 0, 0,
d7921315
L		 201 FALSE),
202
203/* Use complain_overflow_bitfield on R_X86_64_32 for x32. */
204 HOWTO(R_X86_64_32, 0, 2, 32, FALSE, 0, complain_overflow_bitfield,
205 bfd_elf_generic_reloc, "R_X86_64_32", FALSE, 0xffffffff, 0xffffffff,
206 FALSE)
8d88c4ca
NC		 207};
208
d8045f23
NC		 209#define IS_X86_64_PCREL_TYPE(TYPE) \
210 ( ((TYPE) == R_X86_64_PC8) \
211 || ((TYPE) == R_X86_64_PC16) \
212 || ((TYPE) == R_X86_64_PC32) \
c3320543 213 || ((TYPE) == R_X86_64_PC32_BND) \
d8045f23
NC		 214 || ((TYPE) == R_X86_64_PC64))
215
8d88c4ca 216/* Map BFD relocs to the x86_64 elf relocs. */
70256ad8
AJ		 217struct elf_reloc_map
218{
8d88c4ca
NC		 219 bfd_reloc_code_real_type bfd_reloc_val;
220 unsigned char elf_reloc_val;
221};
222
dc810e39 223static const struct elf_reloc_map x86_64_reloc_map[] =
8d88c4ca 224{
70256ad8
AJ		 225 { BFD_RELOC_NONE, R_X86_64_NONE, },
226 { BFD_RELOC_64, R_X86_64_64, },
227 { BFD_RELOC_32_PCREL, R_X86_64_PC32, },
228 { BFD_RELOC_X86_64_GOT32, R_X86_64_GOT32,},
229 { BFD_RELOC_X86_64_PLT32, R_X86_64_PLT32,},
230 { BFD_RELOC_X86_64_COPY, R_X86_64_COPY, },
231 { BFD_RELOC_X86_64_GLOB_DAT, R_X86_64_GLOB_DAT, },
232 { BFD_RELOC_X86_64_JUMP_SLOT, R_X86_64_JUMP_SLOT, },
233 { BFD_RELOC_X86_64_RELATIVE, R_X86_64_RELATIVE, },
234 { BFD_RELOC_X86_64_GOTPCREL, R_X86_64_GOTPCREL, },
235 { BFD_RELOC_32, R_X86_64_32, },
236 { BFD_RELOC_X86_64_32S, R_X86_64_32S, },
237 { BFD_RELOC_16, R_X86_64_16, },
238 { BFD_RELOC_16_PCREL, R_X86_64_PC16, },
239 { BFD_RELOC_8, R_X86_64_8, },
240 { BFD_RELOC_8_PCREL, R_X86_64_PC8, },
bffbf940
JJ		 241 { BFD_RELOC_X86_64_DTPMOD64, R_X86_64_DTPMOD64, },
242 { BFD_RELOC_X86_64_DTPOFF64, R_X86_64_DTPOFF64, },
243 { BFD_RELOC_X86_64_TPOFF64, R_X86_64_TPOFF64, },
244 { BFD_RELOC_X86_64_TLSGD, R_X86_64_TLSGD, },
245 { BFD_RELOC_X86_64_TLSLD, R_X86_64_TLSLD, },
246 { BFD_RELOC_X86_64_DTPOFF32, R_X86_64_DTPOFF32, },
247 { BFD_RELOC_X86_64_GOTTPOFF, R_X86_64_GOTTPOFF, },
248 { BFD_RELOC_X86_64_TPOFF32, R_X86_64_TPOFF32, },
d6ab8113
JB		 249 { BFD_RELOC_64_PCREL, R_X86_64_PC64, },
250 { BFD_RELOC_X86_64_GOTOFF64, R_X86_64_GOTOFF64, },
251 { BFD_RELOC_X86_64_GOTPC32, R_X86_64_GOTPC32, },
7b81dfbb
AJ		 252 { BFD_RELOC_X86_64_GOT64, R_X86_64_GOT64, },
253 { BFD_RELOC_X86_64_GOTPCREL64,R_X86_64_GOTPCREL64, },
254 { BFD_RELOC_X86_64_GOTPC64, R_X86_64_GOTPC64, },
255 { BFD_RELOC_X86_64_GOTPLT64, R_X86_64_GOTPLT64, },
256 { BFD_RELOC_X86_64_PLTOFF64, R_X86_64_PLTOFF64, },
1788fc08
L		 257 { BFD_RELOC_SIZE32, R_X86_64_SIZE32, },
258 { BFD_RELOC_SIZE64, R_X86_64_SIZE64, },
67a4f2b7
AO		 259 { BFD_RELOC_X86_64_GOTPC32_TLSDESC, R_X86_64_GOTPC32_TLSDESC, },
260 { BFD_RELOC_X86_64_TLSDESC_CALL, R_X86_64_TLSDESC_CALL, },
261 { BFD_RELOC_X86_64_TLSDESC, R_X86_64_TLSDESC, },
cbe950e9 262 { BFD_RELOC_X86_64_IRELATIVE, R_X86_64_IRELATIVE, },
56ceb5b5
L		 263 { BFD_RELOC_X86_64_PC32_BND, R_X86_64_PC32_BND, },
264 { BFD_RELOC_X86_64_PLT32_BND, R_X86_64_PLT32_BND, },
265 { BFD_RELOC_X86_64_GOTPCRELX, R_X86_64_GOTPCRELX, },
266 { BFD_RELOC_X86_64_REX_GOTPCRELX, R_X86_64_REX_GOTPCRELX, },
fe4770f4
AJ		 267 { BFD_RELOC_VTABLE_INHERIT, R_X86_64_GNU_VTINHERIT, },
268 { BFD_RELOC_VTABLE_ENTRY, R_X86_64_GNU_VTENTRY, },
8d88c4ca
NC		 269};
270
67a4f2b7 271static reloc_howto_type *
351f65ca 272elf_x86_64_rtype_to_howto (bfd *abfd, unsigned r_type)
67a4f2b7
AO		 273{
274 unsigned i;
275
d7921315
L		 276 if (r_type == (unsigned int) R_X86_64_32)
277 {
278 if (ABI_64_P (abfd))
279 i = r_type;
280 else
281 i = ARRAY_SIZE (x86_64_elf_howto_table) - 1;
282 }
283 else if (r_type < (unsigned int) R_X86_64_GNU_VTINHERIT
284 || r_type >= (unsigned int) R_X86_64_max)
67a4f2b7
AO		 285 {
286 if (r_type >= (unsigned int) R_X86_64_standard)
287 {
695344c0 288 /* xgettext:c-format */
4eca0228
AM		 289 _bfd_error_handler (_("%B: invalid relocation type %d"),
290 abfd, (int) r_type);
67a4f2b7
AO		 291 r_type = R_X86_64_NONE;
292 }
293 i = r_type;
294 }
295 else
296 i = r_type - (unsigned int) R_X86_64_vt_offset;
297 BFD_ASSERT (x86_64_elf_howto_table[i].type == r_type);
298 return &x86_64_elf_howto_table[i];
299}
8d88c4ca
NC		 300
301/* Given a BFD reloc type, return a HOWTO structure. */
302static reloc_howto_type *
351f65ca
L		 303elf_x86_64_reloc_type_lookup (bfd *abfd,
304 bfd_reloc_code_real_type code)
8d88c4ca
NC		 305{
306 unsigned int i;
27482721 307
8d88c4ca
NC		 308 for (i = 0; i < sizeof (x86_64_reloc_map) / sizeof (struct elf_reloc_map);
309 i++)
310 {
311 if (x86_64_reloc_map[i].bfd_reloc_val == code)
351f65ca
L		 312 return elf_x86_64_rtype_to_howto (abfd,
313 x86_64_reloc_map[i].elf_reloc_val);
8d88c4ca 314 }
5860e3f8 315 return NULL;
8d88c4ca
NC		 316}
317
157090f7 318static reloc_howto_type *
d7921315 319elf_x86_64_reloc_name_lookup (bfd *abfd,
351f65ca 320 const char *r_name)
157090f7
AM		 321{
322 unsigned int i;
323
d7921315
L		 324 if (!ABI_64_P (abfd) && strcasecmp (r_name, "R_X86_64_32") == 0)
325 {
326 /* Get x32 R_X86_64_32. */
327 reloc_howto_type *reloc
328 = &x86_64_elf_howto_table[ARRAY_SIZE (x86_64_elf_howto_table) - 1];
329 BFD_ASSERT (reloc->type == (unsigned int) R_X86_64_32);
330 return reloc;
331 }
332
333 for (i = 0; i < ARRAY_SIZE (x86_64_elf_howto_table); i++)
157090f7
AM		 334 if (x86_64_elf_howto_table[i].name != NULL
335 && strcasecmp (x86_64_elf_howto_table[i].name, r_name) == 0)
336 return &x86_64_elf_howto_table[i];
337
338 return NULL;
339}
340
8d88c4ca 341/* Given an x86_64 ELF reloc type, fill in an arelent structure. */
8da6118f 342
8d88c4ca 343static void
351f65ca
L		 344elf_x86_64_info_to_howto (bfd *abfd ATTRIBUTE_UNUSED, arelent *cache_ptr,
345 Elf_Internal_Rela *dst)
8d88c4ca 346{
67a4f2b7 347 unsigned r_type;
8d88c4ca 348
351f65ca
L		 349 r_type = ELF32_R_TYPE (dst->r_info);
350 cache_ptr->howto = elf_x86_64_rtype_to_howto (abfd, r_type);
8d88c4ca
NC		 351 BFD_ASSERT (r_type == cache_ptr->howto->type);
352}
70256ad8 353\f
3bab7989 354/* Support for core dump NOTE sections. */
b34976b6 355static bfd_boolean
351f65ca 356elf_x86_64_grok_prstatus (bfd *abfd, Elf_Internal_Note *note)
3bab7989
ML		 357{
358 int offset;
eea6121a 359 size_t size;
3bab7989
ML		 360
361 switch (note->descsz)
362 {
363 default:
b34976b6 364 return FALSE;
3bab7989 365
bcd823f1
L		 366 case 296: /* sizeof(istruct elf_prstatus) on Linux/x32 */
367 /* pr_cursig */
228e534f 368 elf_tdata (abfd)->core->signal = bfd_get_16 (abfd, note->descdata + 12);
bcd823f1
L		 369
370 /* pr_pid */
228e534f 371 elf_tdata (abfd)->core->lwpid = bfd_get_32 (abfd, note->descdata + 24);
bcd823f1
L		 372
373 /* pr_reg */
374 offset = 72;
375 size = 216;
376
377 break;
378
3bab7989
ML		 379 case 336: /* sizeof(istruct elf_prstatus) on Linux/x86_64 */
380 /* pr_cursig */
228e534f 381 elf_tdata (abfd)->core->signal
3bab7989
ML		 382 = bfd_get_16 (abfd, note->descdata + 12);
383
384 /* pr_pid */
228e534f 385 elf_tdata (abfd)->core->lwpid
3bab7989
ML		 386 = bfd_get_32 (abfd, note->descdata + 32);
387
388 /* pr_reg */
389 offset = 112;
eea6121a 390 size = 216;
3bab7989
ML		 391
392 break;
393 }
394
395 /* Make a ".reg/999" section. */
396 return _bfd_elfcore_make_pseudosection (abfd, ".reg",
eea6121a 397 size, note->descpos + offset);
3bab7989
ML		 398}
399
b34976b6 400static bfd_boolean
351f65ca 401elf_x86_64_grok_psinfo (bfd *abfd, Elf_Internal_Note *note)
3bab7989
ML		 402{
403 switch (note->descsz)
404 {
405 default:
b34976b6 406 return FALSE;
3bab7989 407
bcd823f1 408 case 124: /* sizeof(struct elf_prpsinfo) on Linux/x32 */
228e534f 409 elf_tdata (abfd)->core->pid
bcd823f1 410 = bfd_get_32 (abfd, note->descdata + 12);
228e534f 411 elf_tdata (abfd)->core->program
bcd823f1 412 = _bfd_elfcore_strndup (abfd, note->descdata + 28, 16);
228e534f 413 elf_tdata (abfd)->core->command
bcd823f1
L		 414 = _bfd_elfcore_strndup (abfd, note->descdata + 44, 80);
415 break;
416
3bab7989 417 case 136: /* sizeof(struct elf_prpsinfo) on Linux/x86_64 */
228e534f 418 elf_tdata (abfd)->core->pid
261b8d08 419 = bfd_get_32 (abfd, note->descdata + 24);
228e534f 420 elf_tdata (abfd)->core->program
3bab7989 421 = _bfd_elfcore_strndup (abfd, note->descdata + 40, 16);
228e534f 422 elf_tdata (abfd)->core->command
3bab7989
ML		 423 = _bfd_elfcore_strndup (abfd, note->descdata + 56, 80);
424 }
425
426 /* Note that for some reason, a spurious space is tacked
427 onto the end of the args in some (at least one anyway)
428 implementations, so strip it off if it exists. */
429
430 {
228e534f 431 char *command = elf_tdata (abfd)->core->command;
3bab7989
ML		 432 int n = strlen (command);
433
434 if (0 < n && command[n - 1] == ' ')
435 command[n - 1] = '\0';
436 }
437
b34976b6 438 return TRUE;
3bab7989 439}
8fd79e71
L		 440
441#ifdef CORE_HEADER
442static char *
443elf_x86_64_write_core_note (bfd *abfd, char *buf, int *bufsiz,
444 int note_type, ...)
445{
446 const struct elf_backend_data *bed = get_elf_backend_data (abfd);
8fd79e71
L		 447 va_list ap;
448 const char *fname, *psargs;
449 long pid;
450 int cursig;
451 const void *gregs;
452
453 switch (note_type)
454 {
455 default:
456 return NULL;
457
458 case NT_PRPSINFO:
459 va_start (ap, note_type);
460 fname = va_arg (ap, const char *);
461 psargs = va_arg (ap, const char *);
462 va_end (ap);
463
464 if (bed->s->elfclass == ELFCLASS32)
465 {
466 prpsinfo32_t data;
467 memset (&data, 0, sizeof (data));
468 strncpy (data.pr_fname, fname, sizeof (data.pr_fname));
469 strncpy (data.pr_psargs, psargs, sizeof (data.pr_psargs));
e85c6a70
JK		 470 return elfcore_write_note (abfd, buf, bufsiz, "CORE", note_type,
471 &data, sizeof (data));
8fd79e71
L		 472 }
473 else
474 {
b1bd052d 475 prpsinfo64_t data;
8fd79e71
L		 476 memset (&data, 0, sizeof (data));
477 strncpy (data.pr_fname, fname, sizeof (data.pr_fname));
478 strncpy (data.pr_psargs, psargs, sizeof (data.pr_psargs));
e85c6a70
JK		 479 return elfcore_write_note (abfd, buf, bufsiz, "CORE", note_type,
480 &data, sizeof (data));
8fd79e71 481 }
e85c6a70 482 /* NOTREACHED */
8fd79e71
L		 483
484 case NT_PRSTATUS:
485 va_start (ap, note_type);
486 pid = va_arg (ap, long);
487 cursig = va_arg (ap, int);
488 gregs = va_arg (ap, const void *);
489 va_end (ap);
490
491 if (bed->s->elfclass == ELFCLASS32)
492 {
493 if (bed->elf_machine_code == EM_X86_64)
494 {
495 prstatusx32_t prstat;
496 memset (&prstat, 0, sizeof (prstat));
497 prstat.pr_pid = pid;
498 prstat.pr_cursig = cursig;
499 memcpy (&prstat.pr_reg, gregs, sizeof (prstat.pr_reg));
e85c6a70
JK		 500 return elfcore_write_note (abfd, buf, bufsiz, "CORE", note_type,
501 &prstat, sizeof (prstat));
8fd79e71
L		 502 }
503 else
504 {
505 prstatus32_t prstat;
506 memset (&prstat, 0, sizeof (prstat));
507 prstat.pr_pid = pid;
508 prstat.pr_cursig = cursig;
509 memcpy (&prstat.pr_reg, gregs, sizeof (prstat.pr_reg));
e85c6a70
JK		 510 return elfcore_write_note (abfd, buf, bufsiz, "CORE", note_type,
511 &prstat, sizeof (prstat));
8fd79e71
L		 512 }
513 }
514 else
515 {
b1bd052d 516 prstatus64_t prstat;
8fd79e71
L		 517 memset (&prstat, 0, sizeof (prstat));
518 prstat.pr_pid = pid;
519 prstat.pr_cursig = cursig;
520 memcpy (&prstat.pr_reg, gregs, sizeof (prstat.pr_reg));
e85c6a70
JK		 521 return elfcore_write_note (abfd, buf, bufsiz, "CORE", note_type,
522 &prstat, sizeof (prstat));
8fd79e71 523 }
8fd79e71 524 }
e85c6a70 525 /* NOTREACHED */
8fd79e71
L		 526}
527#endif
3bab7989 528\f
407443a3 529/* Functions for the x86-64 ELF linker. */
70256ad8 530
407443a3 531/* The name of the dynamic interpreter. This is put in the .interp
70256ad8
AJ		 532 section. */
533
351f65ca 534#define ELF64_DYNAMIC_INTERPRETER "/lib/ld64.so.1"
eec9dd95 535#define ELF32_DYNAMIC_INTERPRETER "/lib/ldx32.so.1"
70256ad8 536
d40d037c
AJ		 537/* If ELIMINATE_COPY_RELOCS is non-zero, the linker will try to avoid
538 copying dynamic variables from a shared lib into an app's dynbss
539 section, and instead use a dynamic relocation to point into the
540 shared lib. */
541#define ELIMINATE_COPY_RELOCS 1
542
70256ad8
AJ		 543/* The size in bytes of an entry in the global offset table. */
544
545#define GOT_ENTRY_SIZE 8
8d88c4ca 546
38b12349 547/* The size in bytes of an entry in the lazy procedure linkage table. */
8d88c4ca 548
38b12349 549#define LAZY_PLT_ENTRY_SIZE 16
70256ad8 550
38b12349
L		 551/* The size in bytes of an entry in the non-lazy procedure linkage
552 table. */
70256ad8 553
38b12349
L		 554#define NON_LAZY_PLT_ENTRY_SIZE 8
555
556/* The first entry in a lazy procedure linkage table looks like this.
557 See the SVR4 ABI i386 supplement and the x86-64 ABI to see how this
558 works. */
559
560static const bfd_byte elf_x86_64_lazy_plt0_entry[LAZY_PLT_ENTRY_SIZE] =
70256ad8 561{
653165cc
AJ		 562 0xff, 0x35, 8, 0, 0, 0, /* pushq GOT+8(%rip) */
563 0xff, 0x25, 16, 0, 0, 0, /* jmpq *GOT+16(%rip) */
10efb593 564 0x0f, 0x1f, 0x40, 0x00 /* nopl 0(%rax) */
70256ad8
AJ		 565};
566
38b12349 567/* Subsequent entries in a lazy procedure linkage table look like this. */
70256ad8 568
38b12349 569static const bfd_byte elf_x86_64_lazy_plt_entry[LAZY_PLT_ENTRY_SIZE] =
70256ad8 570{
653165cc 571 0xff, 0x25, /* jmpq *name@GOTPC(%rip) */
407443a3 572 0, 0, 0, 0, /* replaced with offset to this symbol in .got. */
653165cc 573 0x68, /* pushq immediate */
70256ad8
AJ		 574 0, 0, 0, 0, /* replaced with index into relocation table. */
575 0xe9, /* jmp relative */
576 0, 0, 0, 0 /* replaced with offset to start of .plt0. */
577};
578
38b12349 579/* The first entry in a lazy procedure linkage table with BND prefix
0ff2b86e
L		 580 like this. */
581
38b12349 582static const bfd_byte elf_x86_64_lazy_bnd_plt0_entry[LAZY_PLT_ENTRY_SIZE] =
0ff2b86e
L		 583{
584 0xff, 0x35, 8, 0, 0, 0, /* pushq GOT+8(%rip) */
585 0xf2, 0xff, 0x25, 16, 0, 0, 0, /* bnd jmpq *GOT+16(%rip) */
586 0x0f, 0x1f, 0 /* nopl (%rax) */
587};
588
38b12349
L		 589/* Subsequent entries for branches with BND prefx in a lazy procedure
590 linkage table look like this. */
0ff2b86e 591
38b12349 592static const bfd_byte elf_x86_64_lazy_bnd_plt_entry[LAZY_PLT_ENTRY_SIZE] =
0ff2b86e
L		 593{
594 0x68, 0, 0, 0, 0, /* pushq immediate */
595 0xf2, 0xe9, 0, 0, 0, 0, /* bnd jmpq relative */
596 0x0f, 0x1f, 0x44, 0, 0 /* nopl 0(%rax,%rax,1) */
597};
598
38b12349 599/* Entries in the non-lazey procedure linkage table look like this. */
0ff2b86e 600
38b12349 601static const bfd_byte elf_x86_64_non_lazy_plt_entry[NON_LAZY_PLT_ENTRY_SIZE] =
0ff2b86e 602{
38b12349
L		 603 0xff, 0x25, /* jmpq *name@GOTPC(%rip) */
604 0, 0, 0, 0, /* replaced with offset to this symbol in .got. */
605 0x66, 0x90 /* xchg %ax,%ax */
0ff2b86e
L		 606};
607
38b12349
L		 608/* Entries for branches with BND prefix in the non-lazey procedure
609 linkage table look like this. */
0ff2b86e 610
38b12349 611static const bfd_byte elf_x86_64_non_lazy_bnd_plt_entry[NON_LAZY_PLT_ENTRY_SIZE] =
0ff2b86e 612{
38b12349
L		 613 0xf2, 0xff, 0x25, /* bnd jmpq *name@GOTPC(%rip) */
614 0, 0, 0, 0, /* replaced with offset to this symbol in .got. */
615 0x90 /* nop */
0ff2b86e
L		 616};
617
38b12349 618/* .eh_frame covering the lazy .plt section. */
e41b3a13 619
38b12349 620static const bfd_byte elf_x86_64_eh_frame_lazy_plt[] =
e41b3a13
JJ		 621{
622#define PLT_CIE_LENGTH 20
623#define PLT_FDE_LENGTH 36
624#define PLT_FDE_START_OFFSET 4 + PLT_CIE_LENGTH + 8
625#define PLT_FDE_LEN_OFFSET 4 + PLT_CIE_LENGTH + 12
626 PLT_CIE_LENGTH, 0, 0, 0, /* CIE length */
627 0, 0, 0, 0, /* CIE ID */
628 1, /* CIE version */
629 'z', 'R', 0, /* Augmentation string */
630 1, /* Code alignment factor */
631 0x78, /* Data alignment factor */
632 16, /* Return address column */
633 1, /* Augmentation size */
634 DW_EH_PE_pcrel | DW_EH_PE_sdata4, /* FDE encoding */
635 DW_CFA_def_cfa, 7, 8, /* DW_CFA_def_cfa: r7 (rsp) ofs 8 */
636 DW_CFA_offset + 16, 1, /* DW_CFA_offset: r16 (rip) at cfa-8 */
637 DW_CFA_nop, DW_CFA_nop,
638
639 PLT_FDE_LENGTH, 0, 0, 0, /* FDE length */
640 PLT_CIE_LENGTH + 8, 0, 0, 0, /* CIE pointer */
641 0, 0, 0, 0, /* R_X86_64_PC32 .plt goes here */
642 0, 0, 0, 0, /* .plt size goes here */
643 0, /* Augmentation size */
644 DW_CFA_def_cfa_offset, 16, /* DW_CFA_def_cfa_offset: 16 */
645 DW_CFA_advance_loc + 6, /* DW_CFA_advance_loc: 6 to __PLT__+6 */
646 DW_CFA_def_cfa_offset, 24, /* DW_CFA_def_cfa_offset: 24 */
647 DW_CFA_advance_loc + 10, /* DW_CFA_advance_loc: 10 to __PLT__+16 */
648 DW_CFA_def_cfa_expression, /* DW_CFA_def_cfa_expression */
649 11, /* Block length */
650 DW_OP_breg7, 8, /* DW_OP_breg7 (rsp): 8 */
651 DW_OP_breg16, 0, /* DW_OP_breg16 (rip): 0 */
652 DW_OP_lit15, DW_OP_and, DW_OP_lit11, DW_OP_ge,
653 DW_OP_lit3, DW_OP_shl, DW_OP_plus,
654 DW_CFA_nop, DW_CFA_nop, DW_CFA_nop, DW_CFA_nop
655};
656
38b12349 657/* .eh_frame covering the lazy BND .plt section. */
9e659176 658
38b12349 659static const bfd_byte elf_x86_64_eh_frame_lazy_bnd_plt[] =
9e659176
L		 660{
661 PLT_CIE_LENGTH, 0, 0, 0, /* CIE length */
662 0, 0, 0, 0, /* CIE ID */
663 1, /* CIE version */
664 'z', 'R', 0, /* Augmentation string */
665 1, /* Code alignment factor */
666 0x78, /* Data alignment factor */
667 16, /* Return address column */
668 1, /* Augmentation size */
669 DW_EH_PE_pcrel | DW_EH_PE_sdata4, /* FDE encoding */
670 DW_CFA_def_cfa, 7, 8, /* DW_CFA_def_cfa: r7 (rsp) ofs 8 */
671 DW_CFA_offset + 16, 1, /* DW_CFA_offset: r16 (rip) at cfa-8 */
672 DW_CFA_nop, DW_CFA_nop,
673
674 PLT_FDE_LENGTH, 0, 0, 0, /* FDE length */
675 PLT_CIE_LENGTH + 8, 0, 0, 0, /* CIE pointer */
676 0, 0, 0, 0, /* R_X86_64_PC32 .plt goes here */
677 0, 0, 0, 0, /* .plt size goes here */
678 0, /* Augmentation size */
679 DW_CFA_def_cfa_offset, 16, /* DW_CFA_def_cfa_offset: 16 */
680 DW_CFA_advance_loc + 6, /* DW_CFA_advance_loc: 6 to __PLT__+6 */
681 DW_CFA_def_cfa_offset, 24, /* DW_CFA_def_cfa_offset: 24 */
682 DW_CFA_advance_loc + 10, /* DW_CFA_advance_loc: 10 to __PLT__+16 */
683 DW_CFA_def_cfa_expression, /* DW_CFA_def_cfa_expression */
684 11, /* Block length */
685 DW_OP_breg7, 8, /* DW_OP_breg7 (rsp): 8 */
686 DW_OP_breg16, 0, /* DW_OP_breg16 (rip): 0 */
687 DW_OP_lit15, DW_OP_and, DW_OP_lit5, DW_OP_ge,
688 DW_OP_lit3, DW_OP_shl, DW_OP_plus,
689 DW_CFA_nop, DW_CFA_nop, DW_CFA_nop, DW_CFA_nop
690};
691
38b12349 692/* .eh_frame covering the non-lazy .plt section. */
fff53dae 693
38b12349 694static const bfd_byte elf_x86_64_eh_frame_non_lazy_plt[] =
fff53dae
L		 695{
696#define PLT_GOT_FDE_LENGTH 20
697 PLT_CIE_LENGTH, 0, 0, 0, /* CIE length */
698 0, 0, 0, 0, /* CIE ID */
699 1, /* CIE version */
700 'z', 'R', 0, /* Augmentation string */
701 1, /* Code alignment factor */
702 0x78, /* Data alignment factor */
703 16, /* Return address column */
704 1, /* Augmentation size */
705 DW_EH_PE_pcrel | DW_EH_PE_sdata4, /* FDE encoding */
706 DW_CFA_def_cfa, 7, 8, /* DW_CFA_def_cfa: r7 (rsp) ofs 8 */
707 DW_CFA_offset + 16, 1, /* DW_CFA_offset: r16 (rip) at cfa-8 */
708 DW_CFA_nop, DW_CFA_nop,
709
710 PLT_GOT_FDE_LENGTH, 0, 0, 0, /* FDE length */
711 PLT_CIE_LENGTH + 8, 0, 0, 0, /* CIE pointer */
38b12349
L		 712 0, 0, 0, 0, /* the start of non-lazy .plt goes here */
713 0, 0, 0, 0, /* non-lazy .plt size goes here */
fff53dae
L		 714 0, /* Augmentation size */
715 DW_CFA_nop, DW_CFA_nop, DW_CFA_nop, DW_CFA_nop,
716 DW_CFA_nop, DW_CFA_nop, DW_CFA_nop
717};
718
38b12349 719struct elf_x86_64_lazy_plt_layout
eed180f8
RM		 720{
721 /* Templates for the initial PLT entry and for subsequent entries. */
722 const bfd_byte *plt0_entry;
723 const bfd_byte *plt_entry;
724 unsigned int plt_entry_size; /* Size of each PLT entry. */
725
726 /* Offsets into plt0_entry that are to be replaced with GOT[1] and GOT[2]. */
727 unsigned int plt0_got1_offset;
728 unsigned int plt0_got2_offset;
729
730 /* Offset of the end of the PC-relative instruction containing
731 plt0_got2_offset. */
732 unsigned int plt0_got2_insn_end;
733
734 /* Offsets into plt_entry that are to be replaced with... */
735 unsigned int plt_got_offset; /* ... address of this symbol in .got. */
736 unsigned int plt_reloc_offset; /* ... offset into relocation table. */
737 unsigned int plt_plt_offset; /* ... offset to start of .plt. */
738
739 /* Length of the PC-relative instruction containing plt_got_offset. */
740 unsigned int plt_got_insn_size;
741
742 /* Offset of the end of the PC-relative jump to plt0_entry. */
743 unsigned int plt_plt_insn_end;
744
745 /* Offset into plt_entry where the initial value of the GOT entry points. */
746 unsigned int plt_lazy_offset;
747
38b12349
L		 748 /* .eh_frame covering the lazy .plt section. */
749 const bfd_byte *eh_frame_plt;
750 unsigned int eh_frame_plt_size;
751};
752
753struct elf_x86_64_non_lazy_plt_layout
754{
755 /* Template for the lazy PLT entries. */
756 const bfd_byte *plt_entry;
757 unsigned int plt_entry_size; /* Size of each PLT entry. */
758
759 /* Offsets into plt_entry that are to be replaced with... */
760 unsigned int plt_got_offset; /* ... address of this symbol in .got. */
761
762 /* Length of the PC-relative instruction containing plt_got_offset. */
763 unsigned int plt_got_insn_size;
764
765 /* .eh_frame covering the non-lazy .plt section. */
766 const bfd_byte *eh_frame_plt;
767 unsigned int eh_frame_plt_size;
768};
769
770struct elf_x86_64_plt_layout
771{
772 /* Template for the PLT entries. */
773 const bfd_byte *plt_entry;
774 unsigned int plt_entry_size; /* Size of each PLT entry. */
775
776 /* 1 has PLT0. */
777 unsigned int has_plt0;
778
779 /* Offsets into plt_entry that are to be replaced with... */
780 unsigned int plt_got_offset; /* ... address of this symbol in .got. */
781
782 /* Length of the PC-relative instruction containing plt_got_offset. */
783 unsigned int plt_got_insn_size;
784
eed180f8
RM		 785 /* .eh_frame covering the .plt section. */
786 const bfd_byte *eh_frame_plt;
787 unsigned int eh_frame_plt_size;
38b12349 788};
fff53dae 789
38b12349
L		 790/* Architecture-specific backend data for x86-64. */
791
792struct elf_x86_64_backend_data
793{
794 /* Target system. */
795 enum
796 {
797 is_normal,
798 is_nacl
799 } os;
eed180f8
RM		 800};
801
f8222080
L		 802#define get_elf_x86_64_arch_data(bed) \
803 ((const struct elf_x86_64_backend_data *) (bed)->arch_data)
804
eed180f8 805#define get_elf_x86_64_backend_data(abfd) \
f8222080 806 get_elf_x86_64_arch_data (get_elf_backend_data (abfd))
eed180f8 807
eed180f8 808/* These are the standard parameters. */
38b12349 809static const struct elf_x86_64_lazy_plt_layout elf_x86_64_lazy_plt =
eed180f8 810 {
38b12349
L		 811 elf_x86_64_lazy_plt0_entry, /* plt0_entry */
812 elf_x86_64_lazy_plt_entry, /* plt_entry */
813 LAZY_PLT_ENTRY_SIZE, /* plt_entry_size */
eed180f8
RM		 814 2, /* plt0_got1_offset */
815 8, /* plt0_got2_offset */
816 12, /* plt0_got2_insn_end */
817 2, /* plt_got_offset */
818 7, /* plt_reloc_offset */
819 12, /* plt_plt_offset */
820 6, /* plt_got_insn_size */
38b12349 821 LAZY_PLT_ENTRY_SIZE, /* plt_plt_insn_end */
eed180f8 822 6, /* plt_lazy_offset */
38b12349
L		 823 elf_x86_64_eh_frame_lazy_plt, /* eh_frame_plt */
824 sizeof (elf_x86_64_eh_frame_lazy_plt) /* eh_frame_plt_size */
825 };
826
827static const struct elf_x86_64_non_lazy_plt_layout elf_x86_64_non_lazy_plt =
828 {
829 elf_x86_64_non_lazy_plt_entry, /* plt_entry */
830 NON_LAZY_PLT_ENTRY_SIZE, /* plt_entry_size */
831 2, /* plt_got_offset */
832 6, /* plt_got_insn_size */
833 elf_x86_64_eh_frame_non_lazy_plt, /* eh_frame_plt */
834 sizeof (elf_x86_64_eh_frame_non_lazy_plt) /* eh_frame_plt_size */
eed180f8
RM		 835 };
836
38b12349 837static const struct elf_x86_64_lazy_plt_layout elf_x86_64_lazy_bnd_plt =
0ff2b86e 838 {
38b12349
L		 839 elf_x86_64_lazy_bnd_plt0_entry, /* plt0_entry */
840 elf_x86_64_lazy_bnd_plt_entry, /* plt_entry */
841 LAZY_PLT_ENTRY_SIZE, /* plt_entry_size */
0ff2b86e
L		 842 2, /* plt0_got1_offset */
843 1+8, /* plt0_got2_offset */
844 1+12, /* plt0_got2_insn_end */
845 1+2, /* plt_got_offset */
846 1, /* plt_reloc_offset */
847 7, /* plt_plt_offset */
848 1+6, /* plt_got_insn_size */
849 11, /* plt_plt_insn_end */
850 0, /* plt_lazy_offset */
38b12349
L		 851 elf_x86_64_eh_frame_lazy_bnd_plt, /* eh_frame_plt */
852 sizeof (elf_x86_64_eh_frame_lazy_bnd_plt) /* eh_frame_plt_size */
853 };
854
855static const struct elf_x86_64_non_lazy_plt_layout elf_x86_64_non_lazy_bnd_plt =
856 {
857 elf_x86_64_non_lazy_bnd_plt_entry, /* plt_entry */
858 NON_LAZY_PLT_ENTRY_SIZE, /* plt_entry_size */
859 1+2, /* plt_got_offset */
860 1+6, /* plt_got_insn_size */
861 elf_x86_64_eh_frame_non_lazy_plt, /* eh_frame_plt */
862 sizeof (elf_x86_64_eh_frame_non_lazy_plt) /* eh_frame_plt_size */
863 };
864
865static const struct elf_x86_64_backend_data elf_x86_64_arch_bed =
866 {
867 is_normal /* os */
0ff2b86e
L		 868 };
869
eed180f8
RM		 870#define elf_backend_arch_data &elf_x86_64_arch_bed
871
aec6b87e
L		 872/* Is a undefined weak symbol which is resolved to 0. Reference to an
873 undefined weak symbol is resolved to 0 when building executable if
874 it isn't dynamic and
875 1. Has non-GOT/non-PLT relocations in text section. Or
876 2. Has no GOT/PLT relocation.
877 */
e62b9723 878#define UNDEFINED_WEAK_RESOLVED_TO_ZERO(INFO, GOT_RELOC, EH) \
aec6b87e
L		 879 ((EH)->elf.root.type == bfd_link_hash_undefweak \
880 && bfd_link_executable (INFO) \
881 && (elf_x86_64_hash_table (INFO)->interp == NULL \
e62b9723 882 || !(GOT_RELOC) \
aec6b87e
L		 883 || (EH)->has_non_got_reloc \
884 || !(INFO)->dynamic_undefined_weak))
885
70256ad8
AJ		 886/* x86-64 ELF linker hash entry. */
887
351f65ca 888struct elf_x86_64_link_hash_entry
70256ad8 889{
c434dee6 890 struct elf_link_hash_entry elf;
70256ad8 891
c434dee6 892 /* Track dynamic relocs copied for this symbol. */
e03a8ed8 893 struct elf_dyn_relocs *dyn_relocs;
bffbf940
JJ		 894
895#define GOT_UNKNOWN 0
896#define GOT_NORMAL 1
897#define GOT_TLS_GD 2
898#define GOT_TLS_IE 3
67a4f2b7
AO		 899#define GOT_TLS_GDESC 4
900#define GOT_TLS_GD_BOTH_P(type) \
901 ((type) == (GOT_TLS_GD | GOT_TLS_GDESC))
902#define GOT_TLS_GD_P(type) \
903 ((type) == GOT_TLS_GD || GOT_TLS_GD_BOTH_P (type))
904#define GOT_TLS_GDESC_P(type) \
905 ((type) == GOT_TLS_GDESC || GOT_TLS_GD_BOTH_P (type))
906#define GOT_TLS_GD_ANY_P(type) \
907 (GOT_TLS_GD_P (type) || GOT_TLS_GDESC_P (type))
bffbf940 908 unsigned char tls_type;
67a4f2b7 909
bc696fd5
L		 910 /* TRUE if a weak symbol with a real definition needs a copy reloc.
911 When there is a weak symbol with a real definition, the processor
912 independent code will have arranged for us to see the real
913 definition first. We need to copy the needs_copy bit from the
914 real definition and check it when allowing copy reloc in PIE. */
915 unsigned int needs_copy : 1;
916
aec6b87e
L		 917 /* TRUE if symbol has GOT or PLT relocations. */
918 unsigned int has_got_reloc : 1;
919
920 /* TRUE if symbol has non-GOT/non-PLT relocations in text sections. */
921 unsigned int has_non_got_reloc : 1;
922
9e9821dd
L		 923 /* Don't call finish_dynamic_symbol on this symbol. */
924 unsigned int no_finish_dynamic_symbol : 1;
925
e2cbcd91
L		 926 /* 0: symbol isn't __tls_get_addr.
927 1: symbol is __tls_get_addr.
928 2: symbol is unknown. */
929 unsigned int tls_get_addr : 2;
930
04ebc307
L		 931 /* Reference count of C/C++ function pointer relocations in read-write
932 section which can be resolved at run-time. */
933 bfd_signed_vma func_pointer_refcount;
934
dd7e64d4
L		 935 /* Information about the GOT PLT entry. Filled when there are both
936 GOT and PLT relocations against the same function. */
937 union gotplt_union plt_got;
938
f2c29a16
L		 939 /* Information about the second PLT entry. */
940 union gotplt_union plt_second;
0ff2b86e 941
67a4f2b7
AO		 942 /* Offset of the GOTPLT entry reserved for the TLS descriptor,
943 starting at the end of the jump table. */
944 bfd_vma tlsdesc_got;
bffbf940
JJ		 945};
946
351f65ca
L		 947#define elf_x86_64_hash_entry(ent) \
948 ((struct elf_x86_64_link_hash_entry *)(ent))
bffbf940 949
351f65ca 950struct elf_x86_64_obj_tdata
bffbf940
JJ		 951{
952 struct elf_obj_tdata root;
953
954 /* tls_type for each local got entry. */
955 char *local_got_tls_type;
67a4f2b7
AO		 956
957 /* GOTPLT entries for TLS descriptors. */
958 bfd_vma *local_tlsdesc_gotent;
70256ad8
AJ		 959};
960
351f65ca
L		 961#define elf_x86_64_tdata(abfd) \
962 ((struct elf_x86_64_obj_tdata *) (abfd)->tdata.any)
bffbf940 963
351f65ca
L		 964#define elf_x86_64_local_got_tls_type(abfd) \
965 (elf_x86_64_tdata (abfd)->local_got_tls_type)
bffbf940 966
351f65ca
L		 967#define elf_x86_64_local_tlsdesc_gotent(abfd) \
968 (elf_x86_64_tdata (abfd)->local_tlsdesc_gotent)
bffbf940 969
0ffa91dd
NC		 970#define is_x86_64_elf(bfd) \
971 (bfd_get_flavour (bfd) == bfd_target_elf_flavour \
972 && elf_tdata (bfd) != NULL \
4dfe6ac6 973 && elf_object_id (bfd) == X86_64_ELF_DATA)
0ffa91dd
NC		 974
975static bfd_boolean
351f65ca 976elf_x86_64_mkobject (bfd *abfd)
0ffa91dd 977{
351f65ca 978 return bfd_elf_allocate_object (abfd, sizeof (struct elf_x86_64_obj_tdata),
4dfe6ac6 979 X86_64_ELF_DATA);
0ffa91dd
NC		 980}
981
c434dee6 982/* x86-64 ELF linker hash table. */
8d88c4ca 983
351f65ca 984struct elf_x86_64_link_hash_table
407443a3 985{
c434dee6 986 struct elf_link_hash_table elf;
70256ad8 987
c434dee6 988 /* Short-cuts to get to dynamic linker sections. */
aec6b87e 989 asection *interp;
e41b3a13 990 asection *plt_eh_frame;
f2c29a16
L		 991 asection *plt_second;
992 asection *plt_second_eh_frame;
dd7e64d4 993 asection *plt_got;
fff53dae 994 asection *plt_got_eh_frame;
70256ad8 995
38b12349
L		 996 /* Parameters describing PLT generation, lazy or non-lazy. */
997 struct elf_x86_64_plt_layout plt;
998
999 /* Parameters describing lazy PLT generation. */
1000 const struct elf_x86_64_lazy_plt_layout *lazy_plt;
1001
1002 /* Parameters describing non-lazy PLT generation. */
1003 const struct elf_x86_64_non_lazy_plt_layout *non_lazy_plt;
1004
4dfe6ac6
NC		 1005 union
1006 {
bffbf940
JJ		 1007 bfd_signed_vma refcount;
1008 bfd_vma offset;
1009 } tls_ld_got;
1010
67a4f2b7
AO		 1011 /* The amount of space used by the jump slots in the GOT. */
1012 bfd_vma sgotplt_jump_table_size;
1013
87d72d41
AM		 1014 /* Small local sym cache. */
1015 struct sym_cache sym_cache;
9f03412a 1016
351f65ca
L		 1017 bfd_vma (*r_info) (bfd_vma, bfd_vma);
1018 bfd_vma (*r_sym) (bfd_vma);
248775ba 1019 unsigned int pointer_r_type;
351f65ca
L		 1020 const char *dynamic_interpreter;
1021 int dynamic_interpreter_size;
1022
9f03412a
AO		 1023 /* _TLS_MODULE_BASE_ symbol. */
1024 struct bfd_link_hash_entry *tls_module_base;
c25bc9fc
L		 1025
1026 /* Used by local STT_GNU_IFUNC symbols. */
1027 htab_t loc_hash_table;
4dfe6ac6
NC		 1028 void * loc_hash_memory;
1029
1030 /* The offset into splt of the PLT entry for the TLS descriptor
1031 resolver. Special values are 0, if not necessary (or not found
1032 to be necessary yet), and -1 if needed but not determined
1033 yet. */
1034 bfd_vma tlsdesc_plt;
1035 /* The offset into sgot of the GOT entry used by the PLT entry
1036 above. */
1037 bfd_vma tlsdesc_got;
e1f98742
L		 1038
1039 /* The index of the next R_X86_64_JUMP_SLOT entry in .rela.plt. */
1040 bfd_vma next_jump_slot_index;
1041 /* The index of the next R_X86_64_IRELATIVE entry in .rela.plt. */
1042 bfd_vma next_irelative_index;
2df3368d
L		 1043
1044 /* TRUE if there are dynamic relocs against IFUNC symbols that apply
1045 to read-only sections. */
1046 bfd_boolean readonly_dynrelocs_against_ifunc;
c434dee6 1047};
70256ad8
AJ		 1048
1049/* Get the x86-64 ELF linker hash table from a link_info structure. */
8d88c4ca 1050
351f65ca 1051#define elf_x86_64_hash_table(p) \
4dfe6ac6 1052 (elf_hash_table_id ((struct elf_link_hash_table *) ((p)->hash)) \
351f65ca 1053 == X86_64_ELF_DATA ? ((struct elf_x86_64_link_hash_table *) ((p)->hash)) : NULL)
8d88c4ca 1054
351f65ca 1055#define elf_x86_64_compute_jump_table_size(htab) \
6de2ae4a 1056 ((htab)->elf.srelplt->reloc_count * GOT_ENTRY_SIZE)
67a4f2b7 1057
407443a3 1058/* Create an entry in an x86-64 ELF linker hash table. */
70256ad8
AJ		 1059
1060static struct bfd_hash_entry *
351f65ca
L		 1061elf_x86_64_link_hash_newfunc (struct bfd_hash_entry *entry,
1062 struct bfd_hash_table *table,
1063 const char *string)
70256ad8 1064{
70256ad8 1065 /* Allocate the structure if it has not already been allocated by a
c434dee6
AJ		 1066 subclass. */
1067 if (entry == NULL)
1068 {
a50b1753 1069 entry = (struct bfd_hash_entry *)
eed180f8
RM		 1070 bfd_hash_allocate (table,
1071 sizeof (struct elf_x86_64_link_hash_entry));
c434dee6
AJ		 1072 if (entry == NULL)
1073 return entry;
1074 }
70256ad8
AJ		 1075
1076 /* Call the allocation method of the superclass. */
c434dee6
AJ		 1077 entry = _bfd_elf_link_hash_newfunc (entry, table, string);
1078 if (entry != NULL)
70256ad8 1079 {
351f65ca 1080 struct elf_x86_64_link_hash_entry *eh;
c434dee6 1081
351f65ca 1082 eh = (struct elf_x86_64_link_hash_entry *) entry;
c434dee6 1083 eh->dyn_relocs = NULL;
bffbf940 1084 eh->tls_type = GOT_UNKNOWN;
bc696fd5 1085 eh->needs_copy = 0;
aec6b87e
L		 1086 eh->has_got_reloc = 0;
1087 eh->has_non_got_reloc = 0;
9e9821dd 1088 eh->no_finish_dynamic_symbol = 0;
e2cbcd91 1089 eh->tls_get_addr = 2;
04ebc307 1090 eh->func_pointer_refcount = 0;
f2c29a16 1091 eh->plt_second.offset = (bfd_vma) -1;
dd7e64d4 1092 eh->plt_got.offset = (bfd_vma) -1;
67a4f2b7 1093 eh->tlsdesc_got = (bfd_vma) -1;
70256ad8
AJ		 1094 }
1095
c434dee6 1096 return entry;
70256ad8
AJ		 1097}
1098
c25bc9fc
L		 1099/* Compute a hash of a local hash entry. We use elf_link_hash_entry
1100 for local symbol so that we can handle local STT_GNU_IFUNC symbols
1101 as global symbol. We reuse indx and dynstr_index for local symbol
1102 hash since they aren't used by global symbols in this backend. */
1103
1104static hashval_t
351f65ca 1105elf_x86_64_local_htab_hash (const void *ptr)
c25bc9fc
L		 1106{
1107 struct elf_link_hash_entry *h
1108 = (struct elf_link_hash_entry *) ptr;
d2149d72 1109 return ELF_LOCAL_SYMBOL_HASH (h->indx, h->dynstr_index);
c25bc9fc
L		 1110}
1111
1112/* Compare local hash entries. */
1113
1114static int
351f65ca 1115elf_x86_64_local_htab_eq (const void *ptr1, const void *ptr2)
c25bc9fc
L		 1116{
1117 struct elf_link_hash_entry *h1
1118 = (struct elf_link_hash_entry *) ptr1;
1119 struct elf_link_hash_entry *h2
1120 = (struct elf_link_hash_entry *) ptr2;
1121
1122 return h1->indx == h2->indx && h1->dynstr_index == h2->dynstr_index;
1123}
1124
1125/* Find and/or create a hash entry for local symbol. */
1126
1127static struct elf_link_hash_entry *
351f65ca
L		 1128elf_x86_64_get_local_sym_hash (struct elf_x86_64_link_hash_table *htab,
1129 bfd *abfd, const Elf_Internal_Rela *rel,
1130 bfd_boolean create)
c25bc9fc 1131{
351f65ca 1132 struct elf_x86_64_link_hash_entry e, *ret;
c25bc9fc 1133 asection *sec = abfd->sections;
d2149d72 1134 hashval_t h = ELF_LOCAL_SYMBOL_HASH (sec->id,
351f65ca 1135 htab->r_sym (rel->r_info));
c25bc9fc
L		 1136 void **slot;
1137
1138 e.elf.indx = sec->id;
351f65ca 1139 e.elf.dynstr_index = htab->r_sym (rel->r_info);
c25bc9fc
L		 1140 slot = htab_find_slot_with_hash (htab->loc_hash_table, &e, h,
1141 create ? INSERT : NO_INSERT);
1142
1143 if (!slot)
1144 return NULL;
1145
1146 if (*slot)
1147 {
351f65ca 1148 ret = (struct elf_x86_64_link_hash_entry *) *slot;
c25bc9fc
L		 1149 return &ret->elf;
1150 }
1151
351f65ca 1152 ret = (struct elf_x86_64_link_hash_entry *)
c25bc9fc 1153 objalloc_alloc ((struct objalloc *) htab->loc_hash_memory,
351f65ca 1154 sizeof (struct elf_x86_64_link_hash_entry));
c25bc9fc
L		 1155 if (ret)
1156 {
1157 memset (ret, 0, sizeof (*ret));
1158 ret->elf.indx = sec->id;
351f65ca 1159 ret->elf.dynstr_index = htab->r_sym (rel->r_info);
c25bc9fc 1160 ret->elf.dynindx = -1;
04ebc307 1161 ret->func_pointer_refcount = 0;
dd7e64d4 1162 ret->plt_got.offset = (bfd_vma) -1;
c25bc9fc
L		 1163 *slot = ret;
1164 }
1165 return &ret->elf;
1166}
1167
68faa637
AM		 1168/* Destroy an X86-64 ELF linker hash table. */
1169
1170static void
d495ab0d 1171elf_x86_64_link_hash_table_free (bfd *obfd)
68faa637
AM		 1172{
1173 struct elf_x86_64_link_hash_table *htab
d495ab0d 1174 = (struct elf_x86_64_link_hash_table *) obfd->link.hash;
68faa637
AM		 1175
1176 if (htab->loc_hash_table)
1177 htab_delete (htab->loc_hash_table);
1178 if (htab->loc_hash_memory)
1179 objalloc_free ((struct objalloc *) htab->loc_hash_memory);
d495ab0d 1180 _bfd_elf_link_hash_table_free (obfd);
68faa637
AM		 1181}
1182
8d88c4ca
NC		 1183/* Create an X86-64 ELF linker hash table. */
1184
1185static struct bfd_link_hash_table *
351f65ca 1186elf_x86_64_link_hash_table_create (bfd *abfd)
8d88c4ca 1187{
351f65ca
L		 1188 struct elf_x86_64_link_hash_table *ret;
1189 bfd_size_type amt = sizeof (struct elf_x86_64_link_hash_table);
8d88c4ca 1190
7bf52ea2 1191 ret = (struct elf_x86_64_link_hash_table *) bfd_zmalloc (amt);
c434dee6 1192 if (ret == NULL)
8d88c4ca
NC		 1193 return NULL;
1194
eb4ff4d6 1195 if (!_bfd_elf_link_hash_table_init (&ret->elf, abfd,
351f65ca
L		 1196 elf_x86_64_link_hash_newfunc,
1197 sizeof (struct elf_x86_64_link_hash_entry),
4dfe6ac6 1198 X86_64_ELF_DATA))
8d88c4ca 1199 {
e2d34d7d 1200 free (ret);
8d88c4ca
NC		 1201 return NULL;
1202 }
1203
351f65ca
L		 1204 if (ABI_64_P (abfd))
1205 {
1206 ret->r_info = elf64_r_info;
1207 ret->r_sym = elf64_r_sym;
248775ba 1208 ret->pointer_r_type = R_X86_64_64;
351f65ca
L		 1209 ret->dynamic_interpreter = ELF64_DYNAMIC_INTERPRETER;
1210 ret->dynamic_interpreter_size = sizeof ELF64_DYNAMIC_INTERPRETER;
1211 }
1212 else
1213 {
1214 ret->r_info = elf32_r_info;
1215 ret->r_sym = elf32_r_sym;
248775ba 1216 ret->pointer_r_type = R_X86_64_32;
351f65ca
L		 1217 ret->dynamic_interpreter = ELF32_DYNAMIC_INTERPRETER;
1218 ret->dynamic_interpreter_size = sizeof ELF32_DYNAMIC_INTERPRETER;
1219 }
1220
c25bc9fc 1221 ret->loc_hash_table = htab_try_create (1024,
351f65ca
L		 1222 elf_x86_64_local_htab_hash,
1223 elf_x86_64_local_htab_eq,
c25bc9fc
L		 1224 NULL);
1225 ret->loc_hash_memory = objalloc_create ();
1226 if (!ret->loc_hash_table || !ret->loc_hash_memory)
1227 {
d495ab0d 1228 elf_x86_64_link_hash_table_free (abfd);
c25bc9fc
L		 1229 return NULL;
1230 }
d495ab0d 1231 ret->elf.root.hash_table_free = elf_x86_64_link_hash_table_free;
c25bc9fc 1232
c434dee6
AJ		 1233 return &ret->elf.root;
1234}
1235
c434dee6
AJ		 1236/* Copy the extra info we tack onto an elf_link_hash_entry. */
1237
1238static void
351f65ca
L		 1239elf_x86_64_copy_indirect_symbol (struct bfd_link_info *info,
1240 struct elf_link_hash_entry *dir,
1241 struct elf_link_hash_entry *ind)
c434dee6 1242{
351f65ca 1243 struct elf_x86_64_link_hash_entry *edir, *eind;
c434dee6 1244
351f65ca
L		 1245 edir = (struct elf_x86_64_link_hash_entry *) dir;
1246 eind = (struct elf_x86_64_link_hash_entry *) ind;
c434dee6 1247
e81830c5
AM		 1248 edir->has_got_reloc |= eind->has_got_reloc;
1249 edir->has_non_got_reloc |= eind->has_non_got_reloc;
aec6b87e 1250
c434dee6
AJ		 1251 if (eind->dyn_relocs != NULL)
1252 {
1253 if (edir->dyn_relocs != NULL)
1254 {
e03a8ed8
L		 1255 struct elf_dyn_relocs **pp;
1256 struct elf_dyn_relocs *p;
c434dee6 1257
fcfa13d2 1258 /* Add reloc counts against the indirect sym to the direct sym
c434dee6
AJ		 1259 list. Merge any entries against the same section. */
1260 for (pp = &eind->dyn_relocs; (p = *pp) != NULL; )
1261 {
e03a8ed8 1262 struct elf_dyn_relocs *q;
c434dee6
AJ		 1263
1264 for (q = edir->dyn_relocs; q != NULL; q = q->next)
1265 if (q->sec == p->sec)
1266 {
1267 q->pc_count += p->pc_count;
1268 q->count += p->count;
1269 *pp = p->next;
1270 break;
1271 }
1272 if (q == NULL)
1273 pp = &p->next;
1274 }
1275 *pp = edir->dyn_relocs;
1276 }
1277
1278 edir->dyn_relocs = eind->dyn_relocs;
1279 eind->dyn_relocs = NULL;
1280 }
1281
bffbf940
JJ		 1282 if (ind->root.type == bfd_link_hash_indirect
1283 && dir->got.refcount <= 0)
1284 {
1285 edir->tls_type = eind->tls_type;
1286 eind->tls_type = GOT_UNKNOWN;
1287 }
1288
d40d037c
AJ		 1289 if (ELIMINATE_COPY_RELOCS
1290 && ind->root.type != bfd_link_hash_indirect
f5385ebf
AM		 1291 && dir->dynamic_adjusted)
1292 {
1293 /* If called to transfer flags for a weakdef during processing
1294 of elf_adjust_dynamic_symbol, don't copy non_got_ref.
1295 We clear it ourselves for ELIMINATE_COPY_RELOCS. */
e81830c5
AM		 1296 if (dir->versioned != versioned_hidden)
1297 dir->ref_dynamic |= ind->ref_dynamic;
f5385ebf
AM		 1298 dir->ref_regular |= ind->ref_regular;
1299 dir->ref_regular_nonweak |= ind->ref_regular_nonweak;
1300 dir->needs_plt |= ind->needs_plt;
1301 dir->pointer_equality_needed |= ind->pointer_equality_needed;
1302 }
d40d037c 1303 else
04ebc307
L		 1304 {
1305 if (eind->func_pointer_refcount > 0)
1306 {
1307 edir->func_pointer_refcount += eind->func_pointer_refcount;
1308 eind->func_pointer_refcount = 0;
1309 }
1310
1311 _bfd_elf_link_hash_copy_indirect (info, dir, ind);
1312 }
8d88c4ca
NC		 1313}
1314
b34976b6 1315static bfd_boolean
27482721 1316elf64_x86_64_elf_object_p (bfd *abfd)
bffbf940 1317{
8d88c4ca
NC		 1318 /* Set the right machine number for an x86-64 elf64 file. */
1319 bfd_default_set_arch_mach (abfd, bfd_arch_i386, bfd_mach_x86_64);
b34976b6 1320 return TRUE;
8d88c4ca
NC		 1321}
1322
8059fb19
RM		 1323static bfd_boolean
1324elf32_x86_64_elf_object_p (bfd *abfd)
1325{
1326 /* Set the right machine number for an x86-64 elf32 file. */
1327 bfd_default_set_arch_mach (abfd, bfd_arch_i386, bfd_mach_x64_32);
1328 return TRUE;
1329}
1330
142411ca
L		 1331/* Return TRUE if the TLS access code sequence support transition
1332 from R_TYPE. */
1333
1334static bfd_boolean
351f65ca
L		 1335elf_x86_64_check_tls_transition (bfd *abfd,
1336 struct bfd_link_info *info,
1337 asection *sec,
1338 bfd_byte *contents,
1339 Elf_Internal_Shdr *symtab_hdr,
1340 struct elf_link_hash_entry **sym_hashes,
1341 unsigned int r_type,
1342 const Elf_Internal_Rela *rel,
1343 const Elf_Internal_Rela *relend)
bffbf940 1344{
142411ca
L		 1345 unsigned int val;
1346 unsigned long r_symndx;
5c98a14e 1347 bfd_boolean largepic = FALSE;
142411ca
L		 1348 struct elf_link_hash_entry *h;
1349 bfd_vma offset;
351f65ca 1350 struct elf_x86_64_link_hash_table *htab;
e2cbcd91
L		 1351 bfd_byte *call;
1352 bfd_boolean indirect_call, tls_get_addr;
142411ca 1353
351f65ca 1354 htab = elf_x86_64_hash_table (info);
142411ca 1355 offset = rel->r_offset;
bffbf940 1356 switch (r_type)
142411ca
L		 1357 {
1358 case R_X86_64_TLSGD:
1359 case R_X86_64_TLSLD:
1360 if ((rel + 1) >= relend)
1361 return FALSE;
1362
1363 if (r_type == R_X86_64_TLSGD)
1364 {
52bc799a 1365 /* Check transition from GD access model. For 64bit, only
142411ca 1366 .byte 0x66; leaq foo@tlsgd(%rip), %rdi
e2cbcd91
L		 1367 .word 0x6666; rex64; call __tls_get_addr@PLT
1368 or
1369 .byte 0x66; leaq foo@tlsgd(%rip), %rdi
1370 .byte 0x66; rex64
1371 call *__tls_get_addr@GOTPCREL(%rip)
1372 which may be converted to
1373 addr32 call __tls_get_addr
52bc799a
L		 1374 can transit to different access model. For 32bit, only
1375 leaq foo@tlsgd(%rip), %rdi
e2cbcd91
L		 1376 .word 0x6666; rex64; call __tls_get_addr@PLT
1377 or
1378 leaq foo@tlsgd(%rip), %rdi
1379 .byte 0x66; rex64
1380 call *__tls_get_addr@GOTPCREL(%rip)
1381 which may be converted to
1382 addr32 call __tls_get_addr
1383 can transit to different access model. For largepic,
5c98a14e 1384 we also support:
e2cbcd91
L		 1385 leaq foo@tlsgd(%rip), %rdi
1386 movabsq $__tls_get_addr@pltoff, %rax
1387 addq $r15, %rax
1388 call *%rax
1389 or
5c98a14e
JJ		 1390 leaq foo@tlsgd(%rip), %rdi
1391 movabsq $__tls_get_addr@pltoff, %rax
1392 addq $rbx, %rax
e2cbcd91 1393 call *%rax */
142411ca 1394
fa289a5f
AM		 1395 static const unsigned char leaq[] = { 0x66, 0x48, 0x8d, 0x3d };
1396
5c98a14e 1397 if ((offset + 12) > sec->size)
142411ca 1398 return FALSE;
52bc799a 1399
e2cbcd91
L		 1400 call = contents + offset + 4;
1401 if (call[0] != 0x66
1402 || !((call[1] == 0x48
1403 && call[2] == 0xff
1404 && call[3] == 0x15)
1405 || (call[1] == 0x48
1406 && call[2] == 0x67
1407 && call[3] == 0xe8)
1408 || (call[1] == 0x66
1409 && call[2] == 0x48
1410 && call[3] == 0xe8)))
5c98a14e
JJ		 1411 {
1412 if (!ABI_64_P (abfd)
1413 || (offset + 19) > sec->size
1414 || offset < 3
e2cbcd91
L		 1415 || memcmp (call - 7, leaq + 1, 3) != 0
1416 || memcmp (call, "\x48\xb8", 2) != 0
1417 || call[11] != 0x01
1418 || call[13] != 0xff
1419 || call[14] != 0xd0
1420 || !((call[10] == 0x48 && call[12] == 0xd8)
1421 || (call[10] == 0x4c && call[12] == 0xf8)))
5c98a14e
JJ		 1422 return FALSE;
1423 largepic = TRUE;
1424 }
1425 else if (ABI_64_P (abfd))
52bc799a 1426 {
52bc799a 1427 if (offset < 4
fa289a5f 1428 || memcmp (contents + offset - 4, leaq, 4) != 0)
52bc799a
L		 1429 return FALSE;
1430 }
1431 else
1432 {
52bc799a 1433 if (offset < 3
fa289a5f 1434 || memcmp (contents + offset - 3, leaq + 1, 3) != 0)
52bc799a
L		 1435 return FALSE;
1436 }
e2cbcd91 1437 indirect_call = call[2] == 0xff;
142411ca
L		 1438 }
1439 else
1440 {
1441 /* Check transition from LD access model. Only
1442 leaq foo@tlsld(%rip), %rdi;
e2cbcd91
L		 1443 call __tls_get_addr@PLT
1444 or
1445 leaq foo@tlsld(%rip), %rdi;
1446 call *__tls_get_addr@GOTPCREL(%rip)
1447 which may be converted to
1448 addr32 call __tls_get_addr
5c98a14e
JJ		 1449 can transit to different access model. For largepic
1450 we also support:
e2cbcd91
L		 1451 leaq foo@tlsld(%rip), %rdi
1452 movabsq $__tls_get_addr@pltoff, %rax
1453 addq $r15, %rax
1454 call *%rax
1455 or
5c98a14e
JJ		 1456 leaq foo@tlsld(%rip), %rdi
1457 movabsq $__tls_get_addr@pltoff, %rax
1458 addq $rbx, %rax
e2cbcd91 1459 call *%rax */
142411ca 1460
fa289a5f 1461 static const unsigned char lea[] = { 0x48, 0x8d, 0x3d };
142411ca
L		 1462
1463 if (offset < 3 || (offset + 9) > sec->size)
1464 return FALSE;
1465
5c98a14e 1466 if (memcmp (contents + offset - 3, lea, 3) != 0)
142411ca 1467 return FALSE;
5c98a14e 1468
e2cbcd91
L		 1469 call = contents + offset + 4;
1470 if (!(call[0] == 0xe8
1471 || (call[0] == 0xff && call[1] == 0x15)
1472 || (call[0] == 0x67 && call[1] == 0xe8)))
5c98a14e
JJ		 1473 {
1474 if (!ABI_64_P (abfd)
1475 || (offset + 19) > sec->size
e2cbcd91
L		 1476 || memcmp (call, "\x48\xb8", 2) != 0
1477 || call[11] != 0x01
1478 || call[13] != 0xff
1479 || call[14] != 0xd0
1480 || !((call[10] == 0x48 && call[12] == 0xd8)
1481 || (call[10] == 0x4c && call[12] == 0xf8)))
5c98a14e
JJ		 1482 return FALSE;
1483 largepic = TRUE;
1484 }
e2cbcd91 1485 indirect_call = call[0] == 0xff;
142411ca
L		 1486 }
1487
351f65ca 1488 r_symndx = htab->r_sym (rel[1].r_info);
142411ca
L		 1489 if (r_symndx < symtab_hdr->sh_info)
1490 return FALSE;
1491
e2cbcd91 1492 tls_get_addr = FALSE;
142411ca 1493 h = sym_hashes[r_symndx - symtab_hdr->sh_info];
e2cbcd91
L		 1494 if (h != NULL && h->root.root.string != NULL)
1495 {
1496 struct elf_x86_64_link_hash_entry *eh
1497 = (struct elf_x86_64_link_hash_entry *) h;
1498 tls_get_addr = eh->tls_get_addr == 1;
1499 if (eh->tls_get_addr > 1)
1500 {
1501 /* Use strncmp to check __tls_get_addr since
1502 __tls_get_addr may be versioned. */
1503 if (strncmp (h->root.root.string, "__tls_get_addr", 14)
1504 == 0)
1505 {
1506 eh->tls_get_addr = 1;
1507 tls_get_addr = TRUE;
1508 }
1509 else
1510 eh->tls_get_addr = 0;
1511 }
1512 }
1513
1514 if (!tls_get_addr)
1515 return FALSE;
1516 else if (largepic)
1517 return ELF32_R_TYPE (rel[1].r_info) == R_X86_64_PLTOFF64;
1518 else if (indirect_call)
1519 return ELF32_R_TYPE (rel[1].r_info) == R_X86_64_GOTPCRELX;
1520 else
1521 return (ELF32_R_TYPE (rel[1].r_info) == R_X86_64_PC32
1522 || ELF32_R_TYPE (rel[1].r_info) == R_X86_64_PLT32);
142411ca
L		 1523
1524 case R_X86_64_GOTTPOFF:
1525 /* Check transition from IE access model:
4a4c5f25
L		 1526 mov foo@gottpoff(%rip), %reg
1527 add foo@gottpoff(%rip), %reg
142411ca
L		 1528 */
1529
4a4c5f25
L		 1530 /* Check REX prefix first. */
1531 if (offset >= 3 && (offset + 4) <= sec->size)
1532 {
1533 val = bfd_get_8 (abfd, contents + offset - 3);
1534 if (val != 0x48 && val != 0x4c)
1535 {
1536 /* X32 may have 0x44 REX prefix or no REX prefix. */
1537 if (ABI_64_P (abfd))
1538 return FALSE;
1539 }
1540 }
1541 else
1542 {
1543 /* X32 may not have any REX prefix. */
1544 if (ABI_64_P (abfd))
1545 return FALSE;
1546 if (offset < 2 || (offset + 3) > sec->size)
1547 return FALSE;
1548 }
142411ca
L		 1549
1550 val = bfd_get_8 (abfd, contents + offset - 2);
1551 if (val != 0x8b && val != 0x03)
1552 return FALSE;
1553
1554 val = bfd_get_8 (abfd, contents + offset - 1);
1555 return (val & 0xc7) == 5;
1556
1557 case R_X86_64_GOTPC32_TLSDESC:
1558 /* Check transition from GDesc access model:
1559 leaq x@tlsdesc(%rip), %rax
1560
1561 Make sure it's a leaq adding rip to a 32-bit offset
1562 into any register, although it's probably almost always
1563 going to be rax. */
1564
1565 if (offset < 3 || (offset + 4) > sec->size)
1566 return FALSE;
1567
1568 val = bfd_get_8 (abfd, contents + offset - 3);
1569 if ((val & 0xfb) != 0x48)
1570 return FALSE;
1571
1572 if (bfd_get_8 (abfd, contents + offset - 2) != 0x8d)
1573 return FALSE;
1574
1575 val = bfd_get_8 (abfd, contents + offset - 1);
1576 return (val & 0xc7) == 0x05;
1577
1578 case R_X86_64_TLSDESC_CALL:
1579 /* Check transition from GDesc access model:
1580 call *x@tlsdesc(%rax)
1581 */
1582 if (offset + 2 <= sec->size)
1583 {
1584 /* Make sure that it's a call *x@tlsdesc(%rax). */
e2cbcd91
L		 1585 call = contents + offset;
1586 return call[0] == 0xff && call[1] == 0x10;
142411ca
L		 1587 }
1588
1589 return FALSE;
1590
1591 default:
1592 abort ();
1593 }
1594}
1595
1596/* Return TRUE if the TLS access transition is OK or no transition
1597 will be performed. Update R_TYPE if there is a transition. */
1598
1599static bfd_boolean
351f65ca
L		 1600elf_x86_64_tls_transition (struct bfd_link_info *info, bfd *abfd,
1601 asection *sec, bfd_byte *contents,
1602 Elf_Internal_Shdr *symtab_hdr,
1603 struct elf_link_hash_entry **sym_hashes,
1604 unsigned int *r_type, int tls_type,
1605 const Elf_Internal_Rela *rel,
1606 const Elf_Internal_Rela *relend,
1607 struct elf_link_hash_entry *h,
bedfd056
L		 1608 unsigned long r_symndx,
1609 bfd_boolean from_relocate_section)
142411ca
L		 1610{
1611 unsigned int from_type = *r_type;
1612 unsigned int to_type = from_type;
1613 bfd_boolean check = TRUE;
1614
bb1cb422
L		 1615 /* Skip TLS transition for functions. */
1616 if (h != NULL
1617 && (h->type == STT_FUNC
1618 || h->type == STT_GNU_IFUNC))
1619 return TRUE;
1620
142411ca 1621 switch (from_type)
bffbf940
JJ		 1622 {
1623 case R_X86_64_TLSGD:
67a4f2b7
AO		 1624 case R_X86_64_GOTPC32_TLSDESC:
1625 case R_X86_64_TLSDESC_CALL:
bffbf940 1626 case R_X86_64_GOTTPOFF:
0e1862bb 1627 if (bfd_link_executable (info))
142411ca
L		 1628 {
1629 if (h == NULL)
1630 to_type = R_X86_64_TPOFF32;
1631 else
1632 to_type = R_X86_64_GOTTPOFF;
1633 }
1634
bedfd056
L		 1635 /* When we are called from elf_x86_64_relocate_section, there may
1636 be additional transitions based on TLS_TYPE. */
1637 if (from_relocate_section)
142411ca
L		 1638 {
1639 unsigned int new_to_type = to_type;
1640
0e1862bb 1641 if (bfd_link_executable (info)
142411ca
L		 1642 && h != NULL
1643 && h->dynindx == -1
1644 && tls_type == GOT_TLS_IE)
1645 new_to_type = R_X86_64_TPOFF32;
1646
1647 if (to_type == R_X86_64_TLSGD
1648 || to_type == R_X86_64_GOTPC32_TLSDESC
1649 || to_type == R_X86_64_TLSDESC_CALL)
1650 {
1651 if (tls_type == GOT_TLS_IE)
1652 new_to_type = R_X86_64_GOTTPOFF;
1653 }
1654
1655 /* We checked the transition before when we were called from
351f65ca 1656 elf_x86_64_check_relocs. We only want to check the new
142411ca
L		 1657 transition which hasn't been checked before. */
1658 check = new_to_type != to_type && from_type == to_type;
1659 to_type = new_to_type;
1660 }
1661
1662 break;
1663
bffbf940 1664 case R_X86_64_TLSLD:
0e1862bb 1665 if (bfd_link_executable (info))
142411ca
L		 1666 to_type = R_X86_64_TPOFF32;
1667 break;
1668
1669 default:
1670 return TRUE;
bffbf940
JJ		 1671 }
1672
142411ca
L		 1673 /* Return TRUE if there is no transition. */
1674 if (from_type == to_type)
1675 return TRUE;
1676
1677 /* Check if the transition can be performed. */
1678 if (check
351f65ca
L		 1679 && ! elf_x86_64_check_tls_transition (abfd, info, sec, contents,
1680 symtab_hdr, sym_hashes,
1681 from_type, rel, relend))
142411ca 1682 {
2f629d23 1683 reloc_howto_type *from, *to;
4c544807 1684 const char *name;
142411ca 1685
351f65ca
L		 1686 from = elf_x86_64_rtype_to_howto (abfd, from_type);
1687 to = elf_x86_64_rtype_to_howto (abfd, to_type);
142411ca 1688
4c544807
L		 1689 if (h)
1690 name = h->root.root.string;
1691 else
1692 {
351f65ca 1693 struct elf_x86_64_link_hash_table *htab;
4dfe6ac6 1694
351f65ca 1695 htab = elf_x86_64_hash_table (info);
4dfe6ac6
NC		 1696 if (htab == NULL)
1697 name = "*unknown*";
1698 else
1699 {
1700 Elf_Internal_Sym *isym;
1701
1702 isym = bfd_sym_from_r_symndx (&htab->sym_cache,
1703 abfd, r_symndx);
1704 name = bfd_elf_sym_name (abfd, symtab_hdr, isym, NULL);
1705 }
4c544807
L		 1706 }
1707
4eca0228 1708 _bfd_error_handler
695344c0 1709 /* xgettext:c-format */
142411ca
L		 1710 (_("%B: TLS transition from %s to %s against `%s' at 0x%lx "
1711 "in section `%A' failed"),
c08bb8dd
AM		 1712 abfd, from->name, to->name, name,
1713 (unsigned long) rel->r_offset, sec);
142411ca
L		 1714 bfd_set_error (bfd_error_bad_value);
1715 return FALSE;
1716 }
1717
1718 *r_type = to_type;
1719 return TRUE;
bffbf940
JJ		 1720}
1721
c1d11331
L		 1722/* Rename some of the generic section flags to better document how they
1723 are used here. */
338c190a
L		 1724#define need_convert_load sec_flg0
1725#define check_relocs_failed sec_flg1
1726
1727static bfd_boolean
1728elf_x86_64_need_pic (bfd *input_bfd, asection *sec,
1729 struct elf_link_hash_entry *h,
1730 Elf_Internal_Shdr *symtab_hdr,
1731 Elf_Internal_Sym *isym,
1732 reloc_howto_type *howto)
1733{
1734 const char *v = "";
1735 const char *und = "";
1736 const char *pic = "";
1737
1738 const char *name;
1739 if (h)
1740 {
1741 name = h->root.root.string;
1742 switch (ELF_ST_VISIBILITY (h->other))
1743 {
1744 case STV_HIDDEN:
1745 v = _("hidden symbol ");
1746 break;
1747 case STV_INTERNAL:
1748 v = _("internal symbol ");
1749 break;
1750 case STV_PROTECTED:
1751 v = _("protected symbol ");
1752 break;
1753 default:
1754 v = _("symbol ");
1755 pic = _("; recompile with -fPIC");
1756 break;
1757 }
1758
1759 if (!h->def_regular && !h->def_dynamic)
1760 und = _("undefined ");
1761 }
1762 else
1763 {
1764 name = bfd_elf_sym_name (input_bfd, symtab_hdr, isym, NULL);
1765 pic = _("; recompile with -fPIC");
1766 }
1767
695344c0 1768 /* xgettext:c-format */
4eca0228
AM		 1769 _bfd_error_handler (_("%B: relocation %s against %s%s`%s' can "
1770 "not be used when making a shared object%s"),
1771 input_bfd, howto->name, und, v, name, pic);
338c190a
L		 1772 bfd_set_error (bfd_error_bad_value);
1773 sec->check_relocs_failed = 1;
1774 return FALSE;
1775}
c1d11331 1776
c175a657
L		 1777/* With the local symbol, foo, we convert
1778 mov foo@GOTPCREL(%rip), %reg
1779 to
1780 lea foo(%rip), %reg
1781 and convert
1782 call/jmp *foo@GOTPCREL(%rip)
1783 to
1784 nop call foo/jmp foo nop
1785 When PIC is false, convert
1786 test %reg, foo@GOTPCREL(%rip)
1787 to
1788 test $foo, %reg
1789 and convert
1790 binop foo@GOTPCREL(%rip), %reg
1791 to
1792 binop $foo, %reg
1793 where binop is one of adc, add, and, cmp, or, sbb, sub, xor
1794 instructions. */
1795
1796static bfd_boolean
1797elf_x86_64_convert_load_reloc (bfd *abfd, asection *sec,
1798 bfd_byte *contents,
1799 Elf_Internal_Rela *irel,
1800 struct elf_link_hash_entry *h,
1801 bfd_boolean *converted,
1802 struct bfd_link_info *link_info)
1803{
1804 struct elf_x86_64_link_hash_table *htab;
1805 bfd_boolean is_pic;
1806 bfd_boolean require_reloc_pc32;
1807 bfd_boolean relocx;
1808 bfd_boolean to_reloc_pc32;
1809 asection *tsec;
1810 char symtype;
1811 bfd_signed_vma raddend;
1812 unsigned int opcode;
1813 unsigned int modrm;
1814 unsigned int r_type = ELF32_R_TYPE (irel->r_info);
1815 unsigned int r_symndx;
1816 bfd_vma toff;
1817 bfd_vma roff = irel->r_offset;
1818
1819 if (roff < (r_type == R_X86_64_REX_GOTPCRELX ? 3 : 2))
1820 return TRUE;
1821
1822 raddend = irel->r_addend;
1823 /* Addend for 32-bit PC-relative relocation must be -4. */
1824 if (raddend != -4)
1825 return TRUE;
1826
1827 htab = elf_x86_64_hash_table (link_info);
1828 is_pic = bfd_link_pic (link_info);
1829
1830 relocx = (r_type == R_X86_64_GOTPCRELX
1831 || r_type == R_X86_64_REX_GOTPCRELX);
1832
1833 /* TRUE if we can convert only to R_X86_64_PC32. Enable it for
1834 --no-relax. */
1835 require_reloc_pc32
1836 = link_info->disable_target_specific_optimizations > 1;
1837
1838 r_symndx = htab->r_sym (irel->r_info);
1839
1840 opcode = bfd_get_8 (abfd, contents + roff - 2);
1841
1842 /* Convert mov to lea since it has been done for a while. */
1843 if (opcode != 0x8b)
1844 {
1845 /* Only convert R_X86_64_GOTPCRELX and R_X86_64_REX_GOTPCRELX
1846 for call, jmp or one of adc, add, and, cmp, or, sbb, sub,
1847 test, xor instructions. */
1848 if (!relocx)
1849 return TRUE;
1850 }
1851
1852 /* We convert only to R_X86_64_PC32:
1853 1. Branch.
1854 2. R_X86_64_GOTPCREL since we can't modify REX byte.
1855 3. require_reloc_pc32 is true.
1856 4. PIC.
1857 */
1858 to_reloc_pc32 = (opcode == 0xff
1859 || !relocx
1860 || require_reloc_pc32
1861 || is_pic);
1862
1863 /* Get the symbol referred to by the reloc. */
1864 if (h == NULL)
1865 {
1866 Elf_Internal_Sym *isym
1867 = bfd_sym_from_r_symndx (&htab->sym_cache, abfd, r_symndx);
1868
1869 /* Skip relocation against undefined symbols. */
1870 if (isym->st_shndx == SHN_UNDEF)
1871 return TRUE;
1872
1873 symtype = ELF_ST_TYPE (isym->st_info);
1874
1875 if (isym->st_shndx == SHN_ABS)
1876 tsec = bfd_abs_section_ptr;
1877 else if (isym->st_shndx == SHN_COMMON)
1878 tsec = bfd_com_section_ptr;
1879 else if (isym->st_shndx == SHN_X86_64_LCOMMON)
1880 tsec = &_bfd_elf_large_com_section;
1881 else
1882 tsec = bfd_section_from_elf_index (abfd, isym->st_shndx);
1883
1884 toff = isym->st_value;
1885 }
1886 else
1887 {
1888 /* Undefined weak symbol is only bound locally in executable
1889 and its reference is resolved as 0 without relocation
1890 overflow. We can only perform this optimization for
1891 GOTPCRELX relocations since we need to modify REX byte.
1892 It is OK convert mov with R_X86_64_GOTPCREL to
1893 R_X86_64_PC32. */
1894 if ((relocx || opcode == 0x8b)
1895 && UNDEFINED_WEAK_RESOLVED_TO_ZERO (link_info,
1896 TRUE,
1897 elf_x86_64_hash_entry (h)))
1898 {
1899 if (opcode == 0xff)
1900 {
1901 /* Skip for branch instructions since R_X86_64_PC32
1902 may overflow. */
1903 if (require_reloc_pc32)
1904 return TRUE;
1905 }
1906 else if (relocx)
1907 {
1908 /* For non-branch instructions, we can convert to
1909 R_X86_64_32/R_X86_64_32S since we know if there
1910 is a REX byte. */
1911 to_reloc_pc32 = FALSE;
1912 }
1913
1914 /* Since we don't know the current PC when PIC is true,
1915 we can't convert to R_X86_64_PC32. */
1916 if (to_reloc_pc32 && is_pic)
1917 return TRUE;
1918
1919 goto convert;
1920 }
1921 /* Avoid optimizing GOTPCREL relocations againt _DYNAMIC since
1922 ld.so may use its link-time address. */
cbd0eecf
L		 1923 else if (h->start_stop
1924 || ((h->def_regular
1925 || h->root.type == bfd_link_hash_defined
1926 || h->root.type == bfd_link_hash_defweak)
1927 && h != htab->elf.hdynamic
1928 && SYMBOL_REFERENCES_LOCAL (link_info, h)))
c175a657
L		 1929 {
1930 /* bfd_link_hash_new or bfd_link_hash_undefined is
1931 set by an assignment in a linker script in
cbd0eecf
L		 1932 bfd_elf_record_link_assignment. start_stop is set
1933 on __start_SECNAME/__stop_SECNAME which mark section
1934 SECNAME. */
1935 if (h->start_stop
1936 || (h->def_regular
1937 && (h->root.type == bfd_link_hash_new
1938 || h->root.type == bfd_link_hash_undefined
1939 || ((h->root.type == bfd_link_hash_defined
1940 || h->root.type == bfd_link_hash_defweak)
1941 && h->root.u.def.section == bfd_und_section_ptr))))
c175a657
L		 1942 {
1943 /* Skip since R_X86_64_32/R_X86_64_32S may overflow. */
1944 if (require_reloc_pc32)
1945 return TRUE;
1946 goto convert;
1947 }
1948 tsec = h->root.u.def.section;
1949 toff = h->root.u.def.value;
1950 symtype = h->type;
1951 }
1952 else
1953 return TRUE;
1954 }
1955
2168b268
L		 1956 /* Don't convert GOTPCREL relocation against large section. */
1957 if (elf_section_data (tsec) != NULL
1958 && (elf_section_flags (tsec) & SHF_X86_64_LARGE) != 0)
1959 return TRUE;
1960
c175a657
L		 1961 /* We can only estimate relocation overflow for R_X86_64_PC32. */
1962 if (!to_reloc_pc32)
1963 goto convert;
1964
1965 if (tsec->sec_info_type == SEC_INFO_TYPE_MERGE)
1966 {
1967 /* At this stage in linking, no SEC_MERGE symbol has been
1968 adjusted, so all references to such symbols need to be
1969 passed through _bfd_merged_section_offset. (Later, in
1970 relocate_section, all SEC_MERGE symbols *except* for
1971 section symbols have been adjusted.)
1972
1973 gas may reduce relocations against symbols in SEC_MERGE
1974 sections to a relocation against the section symbol when
1975 the original addend was zero. When the reloc is against
1976 a section symbol we should include the addend in the
1977 offset passed to _bfd_merged_section_offset, since the
1978 location of interest is the original symbol. On the
1979 other hand, an access to "sym+addend" where "sym" is not
1980 a section symbol should not include the addend; Such an
1981 access is presumed to be an offset from "sym"; The
1982 location of interest is just "sym". */
1983 if (symtype == STT_SECTION)
1984 toff += raddend;
1985
1986 toff = _bfd_merged_section_offset (abfd, &tsec,
1987 elf_section_data (tsec)->sec_info,
1988 toff);
1989
1990 if (symtype != STT_SECTION)
1991 toff += raddend;
1992 }
1993 else
1994 toff += raddend;
1995
1996 /* Don't convert if R_X86_64_PC32 relocation overflows. */
1997 if (tsec->output_section == sec->output_section)
1998 {
1999 if ((toff - roff + 0x80000000) > 0xffffffff)
2000 return TRUE;
2001 }
2002 else
2003 {
2004 bfd_signed_vma distance;
2005
2006 /* At this point, we don't know the load addresses of TSEC
2007 section nor SEC section. We estimate the distrance between
2008 SEC and TSEC. We store the estimated distances in the
2009 compressed_size field of the output section, which is only
2010 used to decompress the compressed input section. */
2011 if (sec->output_section->compressed_size == 0)
2012 {
2013 asection *asect;
2014 bfd_size_type size = 0;
2015 for (asect = link_info->output_bfd->sections;
2016 asect != NULL;
2017 asect = asect->next)
2018 /* Skip debug sections since compressed_size is used to
2019 compress debug sections. */
2020 if ((asect->flags & SEC_DEBUGGING) == 0)
2021 {
2022 asection *i;
2023 for (i = asect->map_head.s;
2024 i != NULL;
2025 i = i->map_head.s)
2026 {
2027 size = align_power (size, i->alignment_power);
2028 size += i->size;
2029 }
2030 asect->compressed_size = size;
2031 }
2032 }
2033
2034 /* Don't convert GOTPCREL relocations if TSEC isn't placed
2035 after SEC. */
2036 distance = (tsec->output_section->compressed_size
2037 - sec->output_section->compressed_size);
2038 if (distance < 0)
2039 return TRUE;
2040
2041 /* Take PT_GNU_RELRO segment into account by adding
2042 maxpagesize. */
2043 if ((toff + distance + get_elf_backend_data (abfd)->maxpagesize
2044 - roff + 0x80000000) > 0xffffffff)
2045 return TRUE;
2046 }
2047
2048convert:
2049 if (opcode == 0xff)
2050 {
2051 /* We have "call/jmp *foo@GOTPCREL(%rip)". */
2052 unsigned int nop;
2053 unsigned int disp;
2054 bfd_vma nop_offset;
2055
2056 /* Convert R_X86_64_GOTPCRELX and R_X86_64_REX_GOTPCRELX to
2057 R_X86_64_PC32. */
2058 modrm = bfd_get_8 (abfd, contents + roff - 1);
2059 if (modrm == 0x25)
2060 {
2061 /* Convert to "jmp foo nop". */
2062 modrm = 0xe9;
2063 nop = NOP_OPCODE;
2064 nop_offset = irel->r_offset + 3;
2065 disp = bfd_get_32 (abfd, contents + irel->r_offset);
2066 irel->r_offset -= 1;
2067 bfd_put_32 (abfd, disp, contents + irel->r_offset);
2068 }
2069 else
2070 {
e2cbcd91
L		 2071 struct elf_x86_64_link_hash_entry *eh
2072 = (struct elf_x86_64_link_hash_entry *) h;
2073
c175a657
L		 2074 /* Convert to "nop call foo". ADDR_PREFIX_OPCODE
2075 is a nop prefix. */
2076 modrm = 0xe8;
e2cbcd91
L		 2077 /* To support TLS optimization, always use addr32 prefix for
2078 "call *__tls_get_addr@GOTPCREL(%rip)". */
2079 if (eh && eh->tls_get_addr == 1)
c175a657 2080 {
e2cbcd91
L		 2081 nop = 0x67;
2082 nop_offset = irel->r_offset - 2;
c175a657
L		 2083 }
2084 else
e2cbcd91
L		 2085 {
2086 nop = link_info->call_nop_byte;
2087 if (link_info->call_nop_as_suffix)
2088 {
2089 nop_offset = irel->r_offset + 3;
2090 disp = bfd_get_32 (abfd, contents + irel->r_offset);
2091 irel->r_offset -= 1;
2092 bfd_put_32 (abfd, disp, contents + irel->r_offset);
2093 }
2094 else
2095 nop_offset = irel->r_offset - 2;
2096 }
c175a657
L		 2097 }
2098 bfd_put_8 (abfd, nop, contents + nop_offset);
2099 bfd_put_8 (abfd, modrm, contents + irel->r_offset - 1);
2100 r_type = R_X86_64_PC32;
2101 }
2102 else
2103 {
2104 unsigned int rex;
2105 unsigned int rex_mask = REX_R;
2106
2107 if (r_type == R_X86_64_REX_GOTPCRELX)
2108 rex = bfd_get_8 (abfd, contents + roff - 3);
2109 else
2110 rex = 0;
2111
2112 if (opcode == 0x8b)
2113 {
2114 if (to_reloc_pc32)
2115 {
2116 /* Convert "mov foo@GOTPCREL(%rip), %reg" to
2117 "lea foo(%rip), %reg". */
2118 opcode = 0x8d;
2119 r_type = R_X86_64_PC32;
2120 }
2121 else
2122 {
2123 /* Convert "mov foo@GOTPCREL(%rip), %reg" to
2124 "mov $foo, %reg". */
2125 opcode = 0xc7;
2126 modrm = bfd_get_8 (abfd, contents + roff - 1);
2127 modrm = 0xc0 | (modrm & 0x38) >> 3;
2128 if ((rex & REX_W) != 0
2129 && ABI_64_P (link_info->output_bfd))
2130 {
2131 /* Keep the REX_W bit in REX byte for LP64. */
2132 r_type = R_X86_64_32S;
2133 goto rewrite_modrm_rex;
2134 }
2135 else
2136 {
2137 /* If the REX_W bit in REX byte isn't needed,
2138 use R_X86_64_32 and clear the W bit to avoid
2139 sign-extend imm32 to imm64. */
2140 r_type = R_X86_64_32;
2141 /* Clear the W bit in REX byte. */
2142 rex_mask |= REX_W;
2143 goto rewrite_modrm_rex;
2144 }
2145 }
2146 }
2147 else
2148 {
2149 /* R_X86_64_PC32 isn't supported. */
2150 if (to_reloc_pc32)
2151 return TRUE;
2152
2153 modrm = bfd_get_8 (abfd, contents + roff - 1);
2154 if (opcode == 0x85)
2155 {
2156 /* Convert "test %reg, foo@GOTPCREL(%rip)" to
2157 "test $foo, %reg". */
2158 modrm = 0xc0 | (modrm & 0x38) >> 3;
2159 opcode = 0xf7;
2160 }
2161 else
2162 {
2163 /* Convert "binop foo@GOTPCREL(%rip), %reg" to
2164 "binop $foo, %reg". */
2165 modrm = 0xc0 | (modrm & 0x38) >> 3 | (opcode & 0x3c);
2166 opcode = 0x81;
2167 }
2168
2169 /* Use R_X86_64_32 with 32-bit operand to avoid relocation
2170 overflow when sign-extending imm32 to imm64. */
2171 r_type = (rex & REX_W) != 0 ? R_X86_64_32S : R_X86_64_32;
2172
2173rewrite_modrm_rex:
2174 bfd_put_8 (abfd, modrm, contents + roff - 1);
2175
2176 if (rex)
2177 {
2178 /* Move the R bit to the B bit in REX byte. */
2179 rex = (rex & ~rex_mask) | (rex & REX_R) >> 2;
2180 bfd_put_8 (abfd, rex, contents + roff - 3);
2181 }
2182
2183 /* No addend for R_X86_64_32/R_X86_64_32S relocations. */
2184 irel->r_addend = 0;
2185 }
2186
2187 bfd_put_8 (abfd, opcode, contents + roff - 2);
2188 }
2189
2190 irel->r_info = htab->r_info (r_symndx, r_type);
2191
2192 *converted = TRUE;
2193
2194 return TRUE;
2195}
2196
70256ad8 2197/* Look through the relocs for a section during the first phase, and
c434dee6
AJ		 2198 calculate needed space in the global offset table, procedure
2199 linkage table, and dynamic reloc sections. */
70256ad8 2200
b34976b6 2201static bfd_boolean
351f65ca
L		 2202elf_x86_64_check_relocs (bfd *abfd, struct bfd_link_info *info,
2203 asection *sec,
2204 const Elf_Internal_Rela *relocs)
70256ad8 2205{
351f65ca 2206 struct elf_x86_64_link_hash_table *htab;
70256ad8
AJ		 2207 Elf_Internal_Shdr *symtab_hdr;
2208 struct elf_link_hash_entry **sym_hashes;
70256ad8
AJ		 2209 const Elf_Internal_Rela *rel;
2210 const Elf_Internal_Rela *rel_end;
70256ad8 2211 asection *sreloc;
bedfd056 2212 bfd_byte *contents;
70256ad8 2213
0e1862bb 2214 if (bfd_link_relocatable (info))
b34976b6 2215 return TRUE;
70256ad8 2216
081b1afe
L		 2217 /* Don't do anything special with non-loaded, non-alloced sections.
2218 In particular, any relocs in such sections should not affect GOT
2219 and PLT reference counting (ie. we don't allow them to create GOT
2220 or PLT entries), there's no possibility or desire to optimize TLS
2221 relocs, and there's not much point in propagating relocs to shared
2222 libs that the dynamic linker won't relocate. */
2223 if ((sec->flags & SEC_ALLOC) == 0)
2224 return TRUE;
2225
0ffa91dd
NC		 2226 BFD_ASSERT (is_x86_64_elf (abfd));
2227
351f65ca 2228 htab = elf_x86_64_hash_table (info);
4dfe6ac6 2229 if (htab == NULL)
afd9acee
L		 2230 {
2231 sec->check_relocs_failed = 1;
2232 return FALSE;
2233 }
4dfe6ac6 2234
bedfd056
L		 2235 /* Get the section contents. */
2236 if (elf_section_data (sec)->this_hdr.contents != NULL)
2237 contents = elf_section_data (sec)->this_hdr.contents;
2238 else if (!bfd_malloc_and_get_section (abfd, sec, &contents))
2239 {
2240 sec->check_relocs_failed = 1;
2241 return FALSE;
2242 }
2243
0ffa91dd 2244 symtab_hdr = &elf_symtab_hdr (abfd);
70256ad8 2245 sym_hashes = elf_sym_hashes (abfd);
70256ad8 2246
c434dee6 2247 sreloc = NULL;
cbe950e9 2248
70256ad8
AJ		 2249 rel_end = relocs + sec->reloc_count;
2250 for (rel = relocs; rel < rel_end; rel++)
2251 {
bffbf940 2252 unsigned int r_type;
70256ad8
AJ		 2253 unsigned long r_symndx;
2254 struct elf_link_hash_entry *h;
aec6b87e 2255 struct elf_x86_64_link_hash_entry *eh;
4c544807
L		 2256 Elf_Internal_Sym *isym;
2257 const char *name;
06a6a421 2258 bfd_boolean size_reloc;
70256ad8 2259
351f65ca
L		 2260 r_symndx = htab->r_sym (rel->r_info);
2261 r_type = ELF32_R_TYPE (rel->r_info);
c434dee6
AJ		 2262
2263 if (r_symndx >= NUM_SHDR_ENTRIES (symtab_hdr))
2264 {
695344c0 2265 /* xgettext:c-format */
4eca0228
AM		 2266 _bfd_error_handler (_("%B: bad symbol index: %d"),
2267 abfd, r_symndx);
afd9acee 2268 goto error_return;
c434dee6
AJ		 2269 }
2270
70256ad8 2271 if (r_symndx < symtab_hdr->sh_info)
c25bc9fc
L		 2272 {
2273 /* A local symbol. */
c2e61a4e
L		 2274 isym = bfd_sym_from_r_symndx (&htab->sym_cache,
2275 abfd, r_symndx);
2276 if (isym == NULL)
afd9acee 2277 goto error_return;
c25bc9fc
L		 2278
2279 /* Check relocation against local STT_GNU_IFUNC symbol. */
351f65ca 2280 if (ELF_ST_TYPE (isym->st_info) == STT_GNU_IFUNC)
c25bc9fc 2281 {
351f65ca
L		 2282 h = elf_x86_64_get_local_sym_hash (htab, abfd, rel,
2283 TRUE);
c25bc9fc 2284 if (h == NULL)
afd9acee 2285 goto error_return;
6bbec505 2286
c25bc9fc 2287 /* Fake a STT_GNU_IFUNC symbol. */
6322e5c5
L		 2288 h->root.root.string = bfd_elf_sym_name (abfd, symtab_hdr,
2289 isym, NULL);
c25bc9fc
L		 2290 h->type = STT_GNU_IFUNC;
2291 h->def_regular = 1;
2292 h->ref_regular = 1;
2293 h->forced_local = 1;
2294 h->root.type = bfd_link_hash_defined;
2295 }
2296 else
2297 h = NULL;
2298 }
70256ad8 2299 else
71cb9464 2300 {
4c544807 2301 isym = NULL;
71cb9464
L		 2302 h = sym_hashes[r_symndx - symtab_hdr->sh_info];
2303 while (h->root.type == bfd_link_hash_indirect
2304 || h->root.type == bfd_link_hash_warning)
2305 h = (struct elf_link_hash_entry *) h->root.u.i.link;
c25bc9fc 2306 }
cbe950e9 2307
d1534d16
L		 2308 /* Check invalid x32 relocations. */
2309 if (!ABI_64_P (abfd))
2310 switch (r_type)
2311 {
2312 default:
2313 break;
2314
d1534d16
L		 2315 case R_X86_64_DTPOFF64:
2316 case R_X86_64_TPOFF64:
2317 case R_X86_64_PC64:
2318 case R_X86_64_GOTOFF64:
2319 case R_X86_64_GOT64:
2320 case R_X86_64_GOTPCREL64:
2321 case R_X86_64_GOTPC64:
2322 case R_X86_64_GOTPLT64:
2323 case R_X86_64_PLTOFF64:
2324 {
2325 if (h)
2326 name = h->root.root.string;
2327 else
2328 name = bfd_elf_sym_name (abfd, symtab_hdr, isym,
2329 NULL);
4eca0228 2330 _bfd_error_handler
695344c0 2331 /* xgettext:c-format */
d1534d16
L		 2332 (_("%B: relocation %s against symbol `%s' isn't "
2333 "supported in x32 mode"), abfd,
2334 x86_64_elf_howto_table[r_type].name, name);
2335 bfd_set_error (bfd_error_bad_value);
afd9acee 2336 goto error_return;
d1534d16
L		 2337 }
2338 break;
2339 }
2340
c25bc9fc
L		 2341 if (h != NULL)
2342 {
ad1e85de
L		 2343 /* It is referenced by a non-shared object. */
2344 h->ref_regular = 1;
bc4e12de 2345 h->root.non_ir_ref_regular = 1;
13a2df29
L		 2346
2347 if (h->type == STT_GNU_IFUNC)
2348 elf_tdata (info->output_bfd)->has_gnu_symbols
2349 |= elf_gnu_symbol_ifunc;
71cb9464 2350 }
70256ad8 2351
bedfd056 2352 if (! elf_x86_64_tls_transition (info, abfd, sec, contents,
351f65ca
L		 2353 symtab_hdr, sym_hashes,
2354 &r_type, GOT_UNKNOWN,
bedfd056 2355 rel, rel_end, h, r_symndx, FALSE))
afd9acee 2356 goto error_return;
142411ca 2357
aec6b87e 2358 eh = (struct elf_x86_64_link_hash_entry *) h;
bffbf940 2359 switch (r_type)
70256ad8 2360 {
bffbf940
JJ		 2361 case R_X86_64_TLSLD:
2362 htab->tls_ld_got.refcount += 1;
2363 goto create_got;
2364
2365 case R_X86_64_TPOFF32:
0e1862bb 2366 if (!bfd_link_executable (info) && ABI_64_P (abfd))
338c190a
L		 2367 return elf_x86_64_need_pic (abfd, sec, h, symtab_hdr, isym,
2368 &x86_64_elf_howto_table[r_type]);
aec6b87e
L		 2369 if (eh != NULL)
2370 eh->has_got_reloc = 1;
bffbf940 2371 break;
c434dee6 2372
bffbf940 2373 case R_X86_64_GOTTPOFF:
0e1862bb 2374 if (!bfd_link_executable (info))
bffbf940
JJ		 2375 info->flags |= DF_STATIC_TLS;
2376 /* Fall through */
70256ad8 2377
bffbf940
JJ		 2378 case R_X86_64_GOT32:
2379 case R_X86_64_GOTPCREL:
56ceb5b5
L		 2380 case R_X86_64_GOTPCRELX:
2381 case R_X86_64_REX_GOTPCRELX:
bffbf940 2382 case R_X86_64_TLSGD:
7b81dfbb
AJ		 2383 case R_X86_64_GOT64:
2384 case R_X86_64_GOTPCREL64:
2385 case R_X86_64_GOTPLT64:
67a4f2b7
AO		 2386 case R_X86_64_GOTPC32_TLSDESC:
2387 case R_X86_64_TLSDESC_CALL:
bffbf940
JJ		 2388 /* This symbol requires a global offset table entry. */
2389 {
2390 int tls_type, old_tls_type;
2391
2392 switch (r_type)
2393 {
2394 default: tls_type = GOT_NORMAL; break;
2395 case R_X86_64_TLSGD: tls_type = GOT_TLS_GD; break;
2396 case R_X86_64_GOTTPOFF: tls_type = GOT_TLS_IE; break;
67a4f2b7
AO		 2397 case R_X86_64_GOTPC32_TLSDESC:
2398 case R_X86_64_TLSDESC_CALL:
2399 tls_type = GOT_TLS_GDESC; break;
bffbf940
JJ		 2400 }
2401
2402 if (h != NULL)
2403 {
2404 h->got.refcount += 1;
aec6b87e 2405 old_tls_type = eh->tls_type;
bffbf940
JJ		 2406 }
2407 else
2408 {
2409 bfd_signed_vma *local_got_refcounts;
2410
2411 /* This is a global offset table entry for a local symbol. */
2412 local_got_refcounts = elf_local_got_refcounts (abfd);
2413 if (local_got_refcounts == NULL)
2414 {
2415 bfd_size_type size;
2416
2417 size = symtab_hdr->sh_info;
67a4f2b7
AO		 2418 size *= sizeof (bfd_signed_vma)
2419 + sizeof (bfd_vma) + sizeof (char);
bffbf940
JJ		 2420 local_got_refcounts = ((bfd_signed_vma *)
2421 bfd_zalloc (abfd, size));
2422 if (local_got_refcounts == NULL)
afd9acee 2423 goto error_return;
bffbf940 2424 elf_local_got_refcounts (abfd) = local_got_refcounts;
351f65ca 2425 elf_x86_64_local_tlsdesc_gotent (abfd)
67a4f2b7 2426 = (bfd_vma *) (local_got_refcounts + symtab_hdr->sh_info);
351f65ca 2427 elf_x86_64_local_got_tls_type (abfd)
67a4f2b7 2428 = (char *) (local_got_refcounts + 2 * symtab_hdr->sh_info);
bffbf940
JJ		 2429 }
2430 local_got_refcounts[r_symndx] += 1;
2431 old_tls_type
351f65ca 2432 = elf_x86_64_local_got_tls_type (abfd) [r_symndx];
bffbf940
JJ		 2433 }
2434
2435 /* If a TLS symbol is accessed using IE at least once,
2436 there is no point to use dynamic model for it. */
2437 if (old_tls_type != tls_type && old_tls_type != GOT_UNKNOWN
67a4f2b7
AO		 2438 && (! GOT_TLS_GD_ANY_P (old_tls_type)
2439 || tls_type != GOT_TLS_IE))
bffbf940 2440 {
67a4f2b7 2441 if (old_tls_type == GOT_TLS_IE && GOT_TLS_GD_ANY_P (tls_type))
bffbf940 2442 tls_type = old_tls_type;
67a4f2b7
AO		 2443 else if (GOT_TLS_GD_ANY_P (old_tls_type)
2444 && GOT_TLS_GD_ANY_P (tls_type))
2445 tls_type |= old_tls_type;
bffbf940
JJ		 2446 else
2447 {
09a24cbf 2448 if (h)
4c544807
L		 2449 name = h->root.root.string;
2450 else
2451 name = bfd_elf_sym_name (abfd, symtab_hdr,
2452 isym, NULL);
4eca0228 2453 _bfd_error_handler
695344c0 2454 /* xgettext:c-format */
63a5468a
AM		 2455 (_("%B: '%s' accessed both as normal and"
2456 " thread local symbol"),
4c544807 2457 abfd, name);
68c4a57e 2458 bfd_set_error (bfd_error_bad_value);
afd9acee 2459 goto error_return;
bffbf940
JJ		 2460 }
2461 }
2462
2463 if (old_tls_type != tls_type)
2464 {
aec6b87e
L		 2465 if (eh != NULL)
2466 eh->tls_type = tls_type;
bffbf940 2467 else
351f65ca 2468 elf_x86_64_local_got_tls_type (abfd) [r_symndx] = tls_type;
bffbf940
JJ		 2469 }
2470 }
c434dee6
AJ		 2471 /* Fall through */
2472
d6ab8113
JB		 2473 case R_X86_64_GOTOFF64:
2474 case R_X86_64_GOTPC32:
7b81dfbb 2475 case R_X86_64_GOTPC64:
bffbf940 2476 create_got:
aec6b87e
L		 2477 if (eh != NULL)
2478 eh->has_got_reloc = 1;
70256ad8
AJ		 2479 break;
2480
2481 case R_X86_64_PLT32:
c3320543 2482 case R_X86_64_PLT32_BND:
70256ad8 2483 /* This symbol requires a procedure linkage table entry. We
407443a3
AJ		 2484 actually build the entry in adjust_dynamic_symbol,
2485 because this might be a case of linking PIC code which is
2486 never referenced by a dynamic object, in which case we
2487 don't need to generate a procedure linkage table entry
2488 after all. */
70256ad8
AJ		 2489
2490 /* If this is a local symbol, we resolve it directly without
407443a3 2491 creating a procedure linkage table entry. */
70256ad8
AJ		 2492 if (h == NULL)
2493 continue;
2494
aec6b87e 2495 eh->has_got_reloc = 1;
f5385ebf 2496 h->needs_plt = 1;
51b64d56 2497 h->plt.refcount += 1;
70256ad8
AJ		 2498 break;
2499
7b81dfbb
AJ		 2500 case R_X86_64_PLTOFF64:
2501 /* This tries to form the 'address' of a function relative
2502 to GOT. For global symbols we need a PLT entry. */
2503 if (h != NULL)
2504 {
2505 h->needs_plt = 1;
2506 h->plt.refcount += 1;
2507 }
2508 goto create_got;
2509
6a3e1bae
L		 2510 case R_X86_64_SIZE32:
2511 case R_X86_64_SIZE64:
06a6a421 2512 size_reloc = TRUE;
6a3e1bae
L		 2513 goto do_size;
2514
248775ba
L		 2515 case R_X86_64_32:
2516 if (!ABI_64_P (abfd))
2517 goto pointer;
1a0670f3 2518 /* Fall through. */
cc78d0af
AJ		 2519 case R_X86_64_8:
2520 case R_X86_64_16:
70256ad8 2521 case R_X86_64_32S:
338c190a
L		 2522 /* Check relocation overflow as these relocs may lead to
2523 run-time relocation overflow. Don't error out for
1b71fb54 2524 sections we don't care about, such as debug sections or
338c190a 2525 when relocation overflow check is disabled. */
4c10bbaa 2526 if (!info->no_reloc_overflow_check
338c190a
L		 2527 && (bfd_link_pic (info)
2528 || (bfd_link_executable (info)
2529 && h != NULL
2530 && !h->def_regular
2531 && h->def_dynamic
081b1afe 2532 && (sec->flags & SEC_READONLY) == 0)))
338c190a
L		 2533 return elf_x86_64_need_pic (abfd, sec, h, symtab_hdr, isym,
2534 &x86_64_elf_howto_table[r_type]);
1b71fb54
AJ		 2535 /* Fall through. */
2536
c434dee6
AJ		 2537 case R_X86_64_PC8:
2538 case R_X86_64_PC16:
70256ad8 2539 case R_X86_64_PC32:
c3320543 2540 case R_X86_64_PC32_BND:
d6ab8113 2541 case R_X86_64_PC64:
1b71fb54 2542 case R_X86_64_64:
248775ba 2543pointer:
aec6b87e
L		 2544 if (eh != NULL && (sec->flags & SEC_CODE) != 0)
2545 eh->has_non_got_reloc = 1;
bf52d7c7
L		 2546 /* We are called after all symbols have been resolved. Only
2547 relocation against STT_GNU_IFUNC symbol must go through
2548 PLT. */
d1ed1c7d
L		 2549 if (h != NULL
2550 && (bfd_link_executable (info)
bf52d7c7 2551 || h->type == STT_GNU_IFUNC))
c434dee6
AJ		 2552 {
2553 /* If this reloc is in a read-only section, we might
2554 need a copy reloc. We can't check reliably at this
2555 stage whether the section is read-only, as input
2556 sections have not yet been mapped to output sections.
2557 Tentatively set the flag for now, and correct in
2558 adjust_dynamic_symbol. */
f5385ebf 2559 h->non_got_ref = 1;
c434dee6 2560
233cc9c1
L		 2561 /* We may need a .plt entry if the symbol is a function
2562 defined in a shared lib or is a STT_GNU_IFUNC function
2563 referenced from the code or read-only section. */
2564 if (!h->def_regular
2565 || (sec->flags & (SEC_CODE | SEC_READONLY)) != 0)
2566 h->plt.refcount += 1;
2567
5db4f0d3
L		 2568 if (r_type == R_X86_64_PC32)
2569 {
2570 /* Since something like ".long foo - ." may be used
2571 as pointer, make sure that PLT is used if foo is
2572 a function defined in a shared library. */
2573 if ((sec->flags & SEC_CODE) == 0)
2574 h->pointer_equality_needed = 1;
2575 }
2576 else if (r_type != R_X86_64_PC32_BND
2577 && r_type != R_X86_64_PC64)
04ebc307
L		 2578 {
2579 h->pointer_equality_needed = 1;
2580 /* At run-time, R_X86_64_64 can be resolved for both
2581 x86-64 and x32. But R_X86_64_32 and R_X86_64_32S
2582 can only be resolved for x32. */
2583 if ((sec->flags & SEC_READONLY) == 0
2584 && (r_type == R_X86_64_64
2585 || (!ABI_64_P (abfd)
2586 && (r_type == R_X86_64_32
2587 || r_type == R_X86_64_32S))))
aec6b87e 2588 eh->func_pointer_refcount += 1;
04ebc307 2589 }
c434dee6 2590 }
70256ad8 2591
06a6a421 2592 size_reloc = FALSE;
6a3e1bae 2593do_size:
70256ad8
AJ		 2594 /* If we are creating a shared library, and this is a reloc
2595 against a global symbol, or a non PC relative reloc
2596 against a local symbol, then we need to copy the reloc
2597 into the shared library. However, if we are linking with
2598 -Bsymbolic, we do not need to copy a reloc against a
2599 global symbol which is defined in an object we are
407443a3 2600 including in the link (i.e., DEF_REGULAR is set). At
70256ad8
AJ		 2601 this point we have not seen all the input files, so it is
2602 possible that DEF_REGULAR is not set now but will be set
c434dee6
AJ		 2603 later (it is never cleared). In case of a weak definition,
2604 DEF_REGULAR may be cleared later by a strong definition in
2605 a shared library. We account for that possibility below by
2606 storing information in the relocs_copied field of the hash
2607 table entry. A similar situation occurs when creating
2608 shared libraries and symbol visibility changes render the
31c0ebfe 2609 symbol local.
c434dee6
AJ		 2610
2611 If on the other hand, we are creating an executable, we
2612 may need to keep relocations for symbols satisfied by a
2613 dynamic library if we manage to avoid copy relocs for the
233cc9c1
L		 2614 symbol.
2615
2616 Generate dynamic pointer relocation against STT_GNU_IFUNC
2617 symbol in the non-code section. */
081b1afe
L		 2618 if ((bfd_link_pic (info)
2619 && (! IS_X86_64_PCREL_TYPE (r_type)
2620 || (h != NULL
2621 && (! (bfd_link_pie (info)
2622 || SYMBOLIC_BIND (info, h))
2623 || h->root.type == bfd_link_hash_defweak
2624 || !h->def_regular))))
233cc9c1
L		 2625 || (h != NULL
2626 && h->type == STT_GNU_IFUNC
2627 && r_type == htab->pointer_r_type
2628 && (sec->flags & SEC_CODE) == 0)
081b1afe
L		 2629 || (ELIMINATE_COPY_RELOCS
2630 && !bfd_link_pic (info)
2631 && h != NULL
2632 && (h->root.type == bfd_link_hash_defweak
2633 || !h->def_regular)))
70256ad8 2634 {
e03a8ed8
L		 2635 struct elf_dyn_relocs *p;
2636 struct elf_dyn_relocs **head;
c434dee6
AJ		 2637
2638 /* We must copy these reloc types into the output file.
2639 Create a reloc section in dynobj and make room for
2640 this reloc. */
70256ad8
AJ		 2641 if (sreloc == NULL)
2642 {
83bac4b0 2643 sreloc = _bfd_elf_make_dynamic_reloc_section
82e96e07
L		 2644 (sec, htab->elf.dynobj, ABI_64_P (abfd) ? 3 : 2,
2645 abfd, /*rela?*/ TRUE);
70256ad8 2646
70256ad8 2647 if (sreloc == NULL)
afd9acee 2648 goto error_return;
70256ad8
AJ		 2649 }
2650
c434dee6
AJ		 2651 /* If this is a global symbol, we count the number of
2652 relocations we need for this symbol. */
2653 if (h != NULL)
aec6b87e 2654 head = &eh->dyn_relocs;
c434dee6
AJ		 2655 else
2656 {
2657 /* Track dynamic relocs needed for local syms too.
2658 We really need local syms available to do this
2659 easily. Oh well. */
c434dee6 2660 asection *s;
87d72d41 2661 void **vpp;
87d72d41
AM		 2662
2663 isym = bfd_sym_from_r_symndx (&htab->sym_cache,
2664 abfd, r_symndx);
2665 if (isym == NULL)
afd9acee 2666 goto error_return;
87d72d41
AM		 2667
2668 s = bfd_section_from_elf_index (abfd, isym->st_shndx);
c434dee6 2669 if (s == NULL)
87d72d41 2670 s = sec;
70256ad8 2671
e81d3500
DD		 2672 /* Beware of type punned pointers vs strict aliasing
2673 rules. */
2674 vpp = &(elf_section_data (s)->local_dynrel);
e03a8ed8 2675 head = (struct elf_dyn_relocs **)vpp;
c434dee6 2676 }
70256ad8 2677
c434dee6
AJ		 2678 p = *head;
2679 if (p == NULL || p->sec != sec)
2680 {
2681 bfd_size_type amt = sizeof *p;
d8045f23 2682
e03a8ed8 2683 p = ((struct elf_dyn_relocs *)
c434dee6 2684 bfd_alloc (htab->elf.dynobj, amt));
70256ad8 2685 if (p == NULL)
afd9acee 2686 goto error_return;
c434dee6
AJ		 2687 p->next = *head;
2688 *head = p;
2689 p->sec = sec;
2690 p->count = 0;
2691 p->pc_count = 0;
70256ad8 2692 }
c434dee6
AJ		 2693
2694 p->count += 1;
06a6a421
L		 2695 /* Count size relocation as PC-relative relocation. */
2696 if (IS_X86_64_PCREL_TYPE (r_type) || size_reloc)
c434dee6 2697 p->pc_count += 1;
70256ad8
AJ		 2698 }
2699 break;
fe4770f4
AJ		 2700
2701 /* This relocation describes the C++ object vtable hierarchy.
2702 Reconstruct it for later use during GC. */
2703 case R_X86_64_GNU_VTINHERIT:
c152c796 2704 if (!bfd_elf_gc_record_vtinherit (abfd, sec, h, rel->r_offset))
afd9acee 2705 goto error_return;
fe4770f4
AJ		 2706 break;
2707
2708 /* This relocation describes which C++ vtable entries are actually
2709 used. Record for later use during GC. */
2710 case R_X86_64_GNU_VTENTRY:
d17e0c6e
JB		 2711 BFD_ASSERT (h != NULL);
2712 if (h != NULL
2713 && !bfd_elf_gc_record_vtentry (abfd, sec, h, rel->r_addend))
afd9acee 2714 goto error_return;
fe4770f4 2715 break;
c434dee6
AJ		 2716
2717 default:
2718 break;
70256ad8 2719 }
dd7e64d4 2720
56ceb5b5
L		 2721 if ((r_type == R_X86_64_GOTPCREL
2722 || r_type == R_X86_64_GOTPCRELX
2723 || r_type == R_X86_64_REX_GOTPCRELX)
c1d11331 2724 && (h == NULL || h->type != STT_GNU_IFUNC))
56ceb5b5 2725 sec->need_convert_load = 1;
70256ad8
AJ		 2726 }
2727
bedfd056
L		 2728 if (elf_section_data (sec)->this_hdr.contents != contents)
2729 {
2730 if (!info->keep_memory)
2731 free (contents);
2732 else
2733 {
2734 /* Cache the section contents for elf_link_input_bfd. */
2735 elf_section_data (sec)->this_hdr.contents = contents;
2736 }
2737 }
2738
b34976b6 2739 return TRUE;
afd9acee
L		 2740
2741error_return:
bedfd056
L		 2742 if (elf_section_data (sec)->this_hdr.contents != contents)
2743 free (contents);
afd9acee
L		 2744 sec->check_relocs_failed = 1;
2745 return FALSE;
70256ad8
AJ		 2746}
2747
2748/* Return the section that should be marked against GC for a given
407443a3 2749 relocation. */
70256ad8
AJ		 2750
2751static asection *
351f65ca
L		 2752elf_x86_64_gc_mark_hook (asection *sec,
2753 struct bfd_link_info *info,
2754 Elf_Internal_Rela *rel,
2755 struct elf_link_hash_entry *h,
2756 Elf_Internal_Sym *sym)
70256ad8
AJ		 2757{
2758 if (h != NULL)
351f65ca 2759 switch (ELF32_R_TYPE (rel->r_info))
07adf181
AM		 2760 {
2761 case R_X86_64_GNU_VTINHERIT:
2762 case R_X86_64_GNU_VTENTRY:
2763 return NULL;
2764 }
2765
2766 return _bfd_elf_gc_mark_hook (sec, info, rel, h, sym);
70256ad8
AJ		 2767}
2768
aec6b87e
L		 2769/* Remove undefined weak symbol from the dynamic symbol table if it
2770 is resolved to 0. */
2771
2772static bfd_boolean
2773elf_x86_64_fixup_symbol (struct bfd_link_info *info,
2774 struct elf_link_hash_entry *h)
2775{
2776 if (h->dynindx != -1
2777 && UNDEFINED_WEAK_RESOLVED_TO_ZERO (info,
e62b9723 2778 elf_x86_64_hash_entry (h)->has_got_reloc,
aec6b87e
L		 2779 elf_x86_64_hash_entry (h)))
2780 {
2781 h->dynindx = -1;
2782 _bfd_elf_strtab_delref (elf_hash_table (info)->dynstr,
2783 h->dynstr_index);
2784 }
2785 return TRUE;
2786}
2787
70256ad8
AJ		 2788/* Adjust a symbol defined by a dynamic object and referenced by a
2789 regular object. The current definition is in some section of the
2790 dynamic object, but we're not including those sections. We have to
2791 change the definition to something the rest of the link can
407443a3 2792 understand. */
70256ad8 2793
b34976b6 2794static bfd_boolean
351f65ca
L		 2795elf_x86_64_adjust_dynamic_symbol (struct bfd_link_info *info,
2796 struct elf_link_hash_entry *h)
70256ad8 2797{
351f65ca 2798 struct elf_x86_64_link_hash_table *htab;
5474d94f 2799 asection *s, *srel;
5ca5bb35
L		 2800 struct elf_x86_64_link_hash_entry *eh;
2801 struct elf_dyn_relocs *p;
70256ad8 2802
cbe950e9
L		 2803 /* STT_GNU_IFUNC symbol must go through PLT. */
2804 if (h->type == STT_GNU_IFUNC)
2805 {
73bcf233
L		 2806 /* All local STT_GNU_IFUNC references must be treate as local
2807 calls via local PLT. */
5ca5bb35
L		 2808 if (h->ref_regular
2809 && SYMBOL_CALLS_LOCAL (info, h))
2810 {
73bcf233 2811 bfd_size_type pc_count = 0, count = 0;
5ca5bb35
L		 2812 struct elf_dyn_relocs **pp;
2813
2814 eh = (struct elf_x86_64_link_hash_entry *) h;
2815 for (pp = &eh->dyn_relocs; (p = *pp) != NULL; )
2816 {
2817 pc_count += p->pc_count;
2818 p->count -= p->pc_count;
2819 p->pc_count = 0;
73bcf233 2820 count += p->count;
5ca5bb35
L		 2821 if (p->count == 0)
2822 *pp = p->next;
2823 else
2824 pp = &p->next;
2825 }
2826
73bcf233 2827 if (pc_count || count)
5ca5bb35 2828 {
5ca5bb35 2829 h->non_got_ref = 1;
233cc9c1
L		 2830 if (pc_count)
2831 {
2832 /* Increment PLT reference count only for PC-relative
2833 references. */
2834 h->needs_plt = 1;
2835 if (h->plt.refcount <= 0)
2836 h->plt.refcount = 1;
2837 else
2838 h->plt.refcount += 1;
2839 }
5ca5bb35
L		 2840 }
2841 }
2842
cbe950e9
L		 2843 if (h->plt.refcount <= 0)
2844 {
2845 h->plt.offset = (bfd_vma) -1;
2846 h->needs_plt = 0;
2847 }
2848 return TRUE;
2849 }
2850
70256ad8
AJ		 2851 /* If this is a function, put it in the procedure linkage table. We
2852 will fill in the contents of the procedure linkage table later,
2853 when we know the address of the .got section. */
2854 if (h->type == STT_FUNC
f5385ebf 2855 || h->needs_plt)
70256ad8 2856 {
c434dee6 2857 if (h->plt.refcount <= 0
27482721
AJ		 2858 || SYMBOL_CALLS_LOCAL (info, h)
2859 || (ELF_ST_VISIBILITY (h->other) != STV_DEFAULT
2860 && h->root.type == bfd_link_hash_undefweak))
70256ad8 2861 {
70256ad8
AJ		 2862 /* This case can occur if we saw a PLT32 reloc in an input
2863 file, but the symbol was never referred to by a dynamic
2864 object, or if all references were garbage collected. In
2865 such a case, we don't actually need to build a procedure
2866 linkage table, and we can just do a PC32 reloc instead. */
70256ad8 2867 h->plt.offset = (bfd_vma) -1;
f5385ebf 2868 h->needs_plt = 0;
70256ad8
AJ		 2869 }
2870
b34976b6 2871 return TRUE;
70256ad8 2872 }
bbd7ec4a 2873 else
c434dee6
AJ		 2874 /* It's possible that we incorrectly decided a .plt reloc was
2875 needed for an R_X86_64_PC32 reloc to a non-function sym in
2876 check_relocs. We can't decide accurately between function and
2877 non-function syms in check-relocs; Objects loaded later in
2878 the link may change h->type. So fix it now. */
bbd7ec4a 2879 h->plt.offset = (bfd_vma) -1;
70256ad8
AJ		 2880
2881 /* If this is a weak symbol, and there is a real definition, the
2882 processor independent code will have arranged for us to see the
407443a3 2883 real definition first, and we can just use the same value. */
f6e332e6 2884 if (h->u.weakdef != NULL)
70256ad8 2885 {
f6e332e6
AM		 2886 BFD_ASSERT (h->u.weakdef->root.type == bfd_link_hash_defined
2887 || h->u.weakdef->root.type == bfd_link_hash_defweak);
2888 h->root.u.def.section = h->u.weakdef->root.u.def.section;
2889 h->root.u.def.value = h->u.weakdef->root.u.def.value;
d40d037c 2890 if (ELIMINATE_COPY_RELOCS || info->nocopyreloc)
bc696fd5
L		 2891 {
2892 eh = (struct elf_x86_64_link_hash_entry *) h;
2893 h->non_got_ref = h->u.weakdef->non_got_ref;
2894 eh->needs_copy = h->u.weakdef->needs_copy;
2895 }
b34976b6 2896 return TRUE;
70256ad8
AJ		 2897 }
2898
2899 /* This is a reference to a symbol defined by a dynamic object which
407443a3 2900 is not a function. */
70256ad8
AJ		 2901
2902 /* If we are creating a shared library, we must presume that the
2903 only references to the symbol are via the global offset table.
2904 For such cases we need not do anything here; the relocations will
407443a3 2905 be handled correctly by relocate_section. */
0e1862bb 2906 if (!bfd_link_executable (info))
b34976b6 2907 return TRUE;
70256ad8
AJ		 2908
2909 /* If there are no references to this symbol that do not use the
2910 GOT, we don't need to generate a copy reloc. */
f5385ebf 2911 if (!h->non_got_ref)
b34976b6 2912 return TRUE;
70256ad8 2913
c434dee6
AJ		 2914 /* If -z nocopyreloc was given, we won't generate them either. */
2915 if (info->nocopyreloc)
2916 {
f5385ebf 2917 h->non_got_ref = 0;
b34976b6 2918 return TRUE;
c434dee6
AJ		 2919 }
2920
31c0ebfe 2921 if (ELIMINATE_COPY_RELOCS)
c434dee6 2922 {
351f65ca 2923 eh = (struct elf_x86_64_link_hash_entry *) h;
d40d037c
AJ		 2924 for (p = eh->dyn_relocs; p != NULL; p = p->next)
2925 {
2926 s = p->sec->output_section;
2927 if (s != NULL && (s->flags & SEC_READONLY) != 0)
2928 break;
2929 }
2930
2931 /* If we didn't find any dynamic relocs in read-only sections, then
2932 we'll be keeping the dynamic relocs and avoiding the copy reloc. */
2933 if (p == NULL)
2934 {
f5385ebf 2935 h->non_got_ref = 0;
d40d037c
AJ		 2936 return TRUE;
2937 }
c434dee6
AJ		 2938 }
2939
70256ad8 2940 /* We must allocate the symbol in our .dynbss section, which will
407443a3 2941 become part of the .bss section of the executable. There will be
70256ad8
AJ		 2942 an entry for this symbol in the .dynsym section. The dynamic
2943 object will contain position independent code, so all references
2944 from the dynamic object to this symbol will go through the global
2945 offset table. The dynamic linker will use the .dynsym entry to
2946 determine the address it must put in the global offset table, so
2947 both the dynamic object and the regular object will refer to the
2948 same memory location for the variable. */
2949
351f65ca 2950 htab = elf_x86_64_hash_table (info);
4dfe6ac6
NC		 2951 if (htab == NULL)
2952 return FALSE;
70256ad8
AJ		 2953
2954 /* We must generate a R_X86_64_COPY reloc to tell the dynamic linker
2955 to copy the initial value out of the dynamic object and into the
cedb70c5 2956 runtime process image. */
5474d94f
AM		 2957 if ((h->root.u.def.section->flags & SEC_READONLY) != 0)
2958 {
2959 s = htab->elf.sdynrelro;
2960 srel = htab->elf.sreldynrelro;
2961 }
2962 else
2963 {
2964 s = htab->elf.sdynbss;
2965 srel = htab->elf.srelbss;
2966 }
1d7e9d18 2967 if ((h->root.u.def.section->flags & SEC_ALLOC) != 0 && h->size != 0)
70256ad8 2968 {
351f65ca
L		 2969 const struct elf_backend_data *bed;
2970 bed = get_elf_backend_data (info->output_bfd);
5474d94f 2971 srel->size += bed->s->sizeof_rela;
f5385ebf 2972 h->needs_copy = 1;
70256ad8
AJ		 2973 }
2974
6cabe1ea 2975 return _bfd_elf_adjust_dynamic_copy (info, h, s);
70256ad8
AJ		 2976}
2977
c434dee6
AJ		 2978/* Allocate space in .plt, .got and associated reloc sections for
2979 dynamic relocs. */
2980
b34976b6 2981static bfd_boolean
351f65ca 2982elf_x86_64_allocate_dynrelocs (struct elf_link_hash_entry *h, void * inf)
c434dee6
AJ		 2983{
2984 struct bfd_link_info *info;
351f65ca
L		 2985 struct elf_x86_64_link_hash_table *htab;
2986 struct elf_x86_64_link_hash_entry *eh;
e03a8ed8 2987 struct elf_dyn_relocs *p;
351f65ca 2988 const struct elf_backend_data *bed;
eed180f8 2989 unsigned int plt_entry_size;
aec6b87e 2990 bfd_boolean resolved_to_zero;
c434dee6 2991
e92d460e 2992 if (h->root.type == bfd_link_hash_indirect)
b34976b6 2993 return TRUE;
c434dee6 2994
351f65ca 2995 eh = (struct elf_x86_64_link_hash_entry *) h;
e92d460e 2996
c434dee6 2997 info = (struct bfd_link_info *) inf;
351f65ca 2998 htab = elf_x86_64_hash_table (info);
4dfe6ac6
NC		 2999 if (htab == NULL)
3000 return FALSE;
351f65ca 3001 bed = get_elf_backend_data (info->output_bfd);
38b12349 3002 plt_entry_size = htab->plt.plt_entry_size;
c434dee6 3003
e62b9723
L		 3004 resolved_to_zero = UNDEFINED_WEAK_RESOLVED_TO_ZERO (info,
3005 eh->has_got_reloc,
3006 eh);
aec6b87e 3007
dd7e64d4
L		 3008 /* We can't use the GOT PLT if pointer equality is needed since
3009 finish_dynamic_symbol won't clear symbol value and the dynamic
3010 linker won't update the GOT slot. We will get into an infinite
3011 loop at run-time. */
3012 if (htab->plt_got != NULL
3013 && h->type != STT_GNU_IFUNC
3014 && !h->pointer_equality_needed
3015 && h->plt.refcount > 0
3016 && h->got.refcount > 0)
3017 {
3018 /* Don't use the regular PLT if there are both GOT and GOTPLT
3019 reloctions. */
3020 h->plt.offset = (bfd_vma) -1;
3021
3022 /* Use the GOT PLT. */
3023 eh->plt_got.refcount = 1;
3024 }
3025
04ebc307
L		 3026 /* Clear the reference count of function pointer relocations if
3027 symbol isn't a normal function. */
3028 if (h->type != STT_FUNC)
3029 eh->func_pointer_refcount = 0;
3030
cbe950e9
L		 3031 /* Since STT_GNU_IFUNC symbol must go through PLT, we handle it
3032 here if it is defined and referenced in a non-shared object. */
3033 if (h->type == STT_GNU_IFUNC
3034 && h->def_regular)
0ff2b86e
L		 3035 {
3036 if (_bfd_elf_allocate_ifunc_dyn_relocs (info, h,
3037 &eh->dyn_relocs,
2df3368d 3038 &htab->readonly_dynrelocs_against_ifunc,
0ff2b86e 3039 plt_entry_size,
38b12349
L		 3040 (htab->plt.has_plt0
3041 * plt_entry_size),
233cc9c1 3042 GOT_ENTRY_SIZE, TRUE))
0ff2b86e 3043 {
f2c29a16 3044 asection *s = htab->plt_second;
0ff2b86e
L		 3045 if (h->plt.offset != (bfd_vma) -1 && s != NULL)
3046 {
f2c29a16
L		 3047 /* Use the second PLT section if it is created. */
3048 eh->plt_second.offset = s->size;
0ff2b86e 3049
f2c29a16 3050 /* Make room for this entry in the second PLT section. */
38b12349 3051 s->size += htab->non_lazy_plt->plt_entry_size;
0ff2b86e
L		 3052 }
3053
3054 return TRUE;
3055 }
3056 else
3057 return FALSE;
3058 }
04ebc307
L		 3059 /* Don't create the PLT entry if there are only function pointer
3060 relocations which can be resolved at run-time. */
cbe950e9 3061 else if (htab->elf.dynamic_sections_created
04ebc307
L		 3062 && (h->plt.refcount > eh->func_pointer_refcount
3063 || eh->plt_got.refcount > 0))
c434dee6 3064 {
dc2be3d2 3065 bfd_boolean use_plt_got = eh->plt_got.refcount > 0;
25070364 3066
04ebc307
L		 3067 /* Clear the reference count of function pointer relocations
3068 if PLT is used. */
3069 eh->func_pointer_refcount = 0;
3070
c434dee6
AJ		 3071 /* Make sure this symbol is output as a dynamic symbol.
3072 Undefined weak syms won't yet be marked as dynamic. */
3073 if (h->dynindx == -1
aec6b87e 3074 && !h->forced_local
9e9821dd
L		 3075 && !resolved_to_zero
3076 && h->root.type == bfd_link_hash_undefweak)
c434dee6 3077 {
c152c796 3078 if (! bfd_elf_link_record_dynamic_symbol (info, h))
b34976b6 3079 return FALSE;
c434dee6
AJ		 3080 }
3081
0e1862bb 3082 if (bfd_link_pic (info)
27482721 3083 || WILL_CALL_FINISH_DYNAMIC_SYMBOL (1, 0, h))
c434dee6 3084 {
6de2ae4a 3085 asection *s = htab->elf.splt;
f2c29a16 3086 asection *second_s = htab->plt_second;
dd7e64d4 3087 asection *got_s = htab->plt_got;
c434dee6 3088
7c1e8d3e
L		 3089 /* If this is the first .plt entry, make room for the special
3090 first entry. The .plt section is used by prelink to undo
3091 prelinking for dynamic relocations. */
3092 if (s->size == 0)
38b12349 3093 s->size = htab->plt.has_plt0 * plt_entry_size;
7c1e8d3e 3094
dd7e64d4
L		 3095 if (use_plt_got)
3096 eh->plt_got.offset = got_s->size;
3097 else
3098 {
3099 h->plt.offset = s->size;
f2c29a16
L		 3100 if (second_s)
3101 eh->plt_second.offset = second_s->size;
dd7e64d4 3102 }
c434dee6
AJ		 3103
3104 /* If this symbol is not defined in a regular file, and we are
3105 not generating a shared library, then set the symbol to this
3106 location in the .plt. This is required to make function
3107 pointers compare as equal between the normal executable and
3108 the shared library. */
0e1862bb 3109 if (! bfd_link_pic (info)
f5385ebf 3110 && !h->def_regular)
c434dee6 3111 {
dd7e64d4 3112 if (use_plt_got)
0ff2b86e 3113 {
dd7e64d4
L		 3114 /* We need to make a call to the entry of the GOT PLT
3115 instead of regular PLT entry. */
3116 h->root.u.def.section = got_s;
3117 h->root.u.def.value = eh->plt_got.offset;
0ff2b86e
L		 3118 }
3119 else
3120 {
f2c29a16 3121 if (second_s)
dd7e64d4 3122 {
f2c29a16
L		 3123 /* We need to make a call to the entry of the
3124 second PLT instead of regular PLT entry. */
3125 h->root.u.def.section = second_s;
3126 h->root.u.def.value = eh->plt_second.offset;
dd7e64d4
L		 3127 }
3128 else
3129 {
3130 h->root.u.def.section = s;
3131 h->root.u.def.value = h->plt.offset;
3132 }
0ff2b86e 3133 }
c434dee6
AJ		 3134 }
3135
3136 /* Make room for this entry. */
dd7e64d4 3137 if (use_plt_got)
38b12349 3138 got_s->size += htab->non_lazy_plt->plt_entry_size;
dd7e64d4
L		 3139 else
3140 {
3141 s->size += plt_entry_size;
f2c29a16
L		 3142 if (second_s)
3143 second_s->size += htab->non_lazy_plt->plt_entry_size;
c434dee6 3144
dd7e64d4
L		 3145 /* We also need to make an entry in the .got.plt section,
3146 which will be placed in the .got section by the linker
3147 script. */
3148 htab->elf.sgotplt->size += GOT_ENTRY_SIZE;
c434dee6 3149
aec6b87e
L		 3150 /* There should be no PLT relocation against resolved
3151 undefined weak symbol in executable. */
3152 if (!resolved_to_zero)
3153 {
3154 /* We also need to make an entry in the .rela.plt
3155 section. */
3156 htab->elf.srelplt->size += bed->s->sizeof_rela;
3157 htab->elf.srelplt->reloc_count++;
3158 }
dd7e64d4 3159 }
c434dee6
AJ		 3160 }
3161 else
3162 {
13f42277 3163 eh->plt_got.offset = (bfd_vma) -1;
c434dee6 3164 h->plt.offset = (bfd_vma) -1;
f5385ebf 3165 h->needs_plt = 0;
c434dee6
AJ		 3166 }
3167 }
3168 else
3169 {
13f42277 3170 eh->plt_got.offset = (bfd_vma) -1;
c434dee6 3171 h->plt.offset = (bfd_vma) -1;
f5385ebf 3172 h->needs_plt = 0;
c434dee6
AJ		 3173 }
3174
67a4f2b7
AO		 3175 eh->tlsdesc_got = (bfd_vma) -1;
3176
bffbf940
JJ		 3177 /* If R_X86_64_GOTTPOFF symbol is now local to the binary,
3178 make it a R_X86_64_TPOFF32 requiring no GOT entry. */
3179 if (h->got.refcount > 0
0e1862bb 3180 && bfd_link_executable (info)
bffbf940 3181 && h->dynindx == -1
351f65ca 3182 && elf_x86_64_hash_entry (h)->tls_type == GOT_TLS_IE)
d8045f23
NC		 3183 {
3184 h->got.offset = (bfd_vma) -1;
3185 }
bffbf940 3186 else if (h->got.refcount > 0)
c434dee6
AJ		 3187 {
3188 asection *s;
b34976b6 3189 bfd_boolean dyn;
351f65ca 3190 int tls_type = elf_x86_64_hash_entry (h)->tls_type;
c434dee6
AJ		 3191
3192 /* Make sure this symbol is output as a dynamic symbol.
3193 Undefined weak syms won't yet be marked as dynamic. */
3194 if (h->dynindx == -1
aec6b87e 3195 && !h->forced_local
9e9821dd
L		 3196 && !resolved_to_zero
3197 && h->root.type == bfd_link_hash_undefweak)
c434dee6 3198 {
c152c796 3199 if (! bfd_elf_link_record_dynamic_symbol (info, h))
b34976b6 3200 return FALSE;
c434dee6
AJ		 3201 }
3202
67a4f2b7
AO		 3203 if (GOT_TLS_GDESC_P (tls_type))
3204 {
6de2ae4a 3205 eh->tlsdesc_got = htab->elf.sgotplt->size
351f65ca 3206 - elf_x86_64_compute_jump_table_size (htab);
6de2ae4a 3207 htab->elf.sgotplt->size += 2 * GOT_ENTRY_SIZE;
67a4f2b7
AO		 3208 h->got.offset = (bfd_vma) -2;
3209 }
3210 if (! GOT_TLS_GDESC_P (tls_type)
3211 || GOT_TLS_GD_P (tls_type))
3212 {
6de2ae4a 3213 s = htab->elf.sgot;
67a4f2b7
AO		 3214 h->got.offset = s->size;
3215 s->size += GOT_ENTRY_SIZE;
3216 if (GOT_TLS_GD_P (tls_type))
3217 s->size += GOT_ENTRY_SIZE;
3218 }
c434dee6 3219 dyn = htab->elf.dynamic_sections_created;
bffbf940 3220 /* R_X86_64_TLSGD needs one dynamic relocation if local symbol
aec6b87e
L		 3221 and two if global. R_X86_64_GOTTPOFF needs one dynamic
3222 relocation. No dynamic relocation against resolved undefined
3223 weak symbol in executable. */
67a4f2b7 3224 if ((GOT_TLS_GD_P (tls_type) && h->dynindx == -1)
bffbf940 3225 || tls_type == GOT_TLS_IE)
351f65ca 3226 htab->elf.srelgot->size += bed->s->sizeof_rela;
67a4f2b7 3227 else if (GOT_TLS_GD_P (tls_type))
351f65ca 3228 htab->elf.srelgot->size += 2 * bed->s->sizeof_rela;
67a4f2b7 3229 else if (! GOT_TLS_GDESC_P (tls_type)
aec6b87e
L		 3230 && ((ELF_ST_VISIBILITY (h->other) == STV_DEFAULT
3231 && !resolved_to_zero)
67a4f2b7 3232 || h->root.type != bfd_link_hash_undefweak)
0e1862bb 3233 && (bfd_link_pic (info)
27482721 3234 || WILL_CALL_FINISH_DYNAMIC_SYMBOL (dyn, 0, h)))
351f65ca 3235 htab->elf.srelgot->size += bed->s->sizeof_rela;
67a4f2b7
AO		 3236 if (GOT_TLS_GDESC_P (tls_type))
3237 {
351f65ca 3238 htab->elf.srelplt->size += bed->s->sizeof_rela;
67a4f2b7
AO		 3239 htab->tlsdesc_plt = (bfd_vma) -1;
3240 }
c434dee6
AJ		 3241 }
3242 else
3243 h->got.offset = (bfd_vma) -1;
3244
c434dee6 3245 if (eh->dyn_relocs == NULL)
b34976b6 3246 return TRUE;
c434dee6
AJ		 3247
3248 /* In the shared -Bsymbolic case, discard space allocated for
3249 dynamic pc-relative relocs against symbols which turn out to be
3250 defined in regular objects. For the normal shared case, discard
3251 space for pc-relative relocs that have become local due to symbol
3252 visibility changes. */
3253
0e1862bb 3254 if (bfd_link_pic (info))
c434dee6 3255 {
27482721
AJ		 3256 /* Relocs that use pc_count are those that appear on a call
3257 insn, or certain REL relocs that can generated via assembly.
3258 We want calls to protected symbols to resolve directly to the
3259 function rather than going via the plt. If people want
3260 function pointer comparisons to work as expected then they
3261 should avoid writing weird assembly. */
3262 if (SYMBOL_CALLS_LOCAL (info, h))
c434dee6 3263 {
e03a8ed8 3264 struct elf_dyn_relocs **pp;
c434dee6
AJ		 3265
3266 for (pp = &eh->dyn_relocs; (p = *pp) != NULL; )
3267 {
c3ce498c
L		 3268 p->count -= p->pc_count;
3269 p->pc_count = 0;
c434dee6
AJ		 3270 if (p->count == 0)
3271 *pp = p->next;
3272 else
3273 pp = &p->next;
3274 }
3275 }
4e795f50
AM		 3276
3277 /* Also discard relocs on undefined weak syms with non-default
aec6b87e 3278 visibility or in PIE. */
31c0ebfe 3279 if (eh->dyn_relocs != NULL)
22d606e9 3280 {
31c0ebfe
L		 3281 if (h->root.type == bfd_link_hash_undefweak)
3282 {
aec6b87e
L		 3283 /* Undefined weak symbol is never bound locally in shared
3284 library. */
3285 if (ELF_ST_VISIBILITY (h->other) != STV_DEFAULT
3286 || resolved_to_zero)
31c0ebfe 3287 eh->dyn_relocs = NULL;
31c0ebfe
L		 3288 else if (h->dynindx == -1
3289 && ! h->forced_local
3290 && ! bfd_elf_link_record_dynamic_symbol (info, h))
3291 return FALSE;
3292 }
9d1d54d5
L		 3293 /* For PIE, discard space for pc-relative relocs against
3294 symbols which turn out to need copy relocs. */
0e1862bb 3295 else if (bfd_link_executable (info)
bc696fd5 3296 && (h->needs_copy || eh->needs_copy)
31c0ebfe
L		 3297 && h->def_dynamic
3298 && !h->def_regular)
9d1d54d5
L		 3299 {
3300 struct elf_dyn_relocs **pp;
3301
3302 for (pp = &eh->dyn_relocs; (p = *pp) != NULL; )
3303 {
3304 if (p->pc_count != 0)
3305 *pp = p->next;
3306 else
3307 pp = &p->next;
3308 }
3309 }
22d606e9 3310 }
d8045f23 3311 }
d40d037c 3312 else if (ELIMINATE_COPY_RELOCS)
c434dee6
AJ		 3313 {
3314 /* For the non-shared case, discard space for relocs against
3315 symbols which turn out to need copy relocs or are not
04ebc307
L		 3316 dynamic. Keep dynamic relocations for run-time function
3317 pointer initialization. */
c434dee6 3318
aec6b87e
L		 3319 if ((!h->non_got_ref
3320 || eh->func_pointer_refcount > 0
3321 || (h->root.type == bfd_link_hash_undefweak
3322 && !resolved_to_zero))
f5385ebf
AM		 3323 && ((h->def_dynamic
3324 && !h->def_regular)
c434dee6
AJ		 3325 || (htab->elf.dynamic_sections_created
3326 && (h->root.type == bfd_link_hash_undefweak
3327 || h->root.type == bfd_link_hash_undefined))))
3328 {
3329 /* Make sure this symbol is output as a dynamic symbol.
3330 Undefined weak syms won't yet be marked as dynamic. */
3331 if (h->dynindx == -1
d8045f23 3332 && ! h->forced_local
aec6b87e 3333 && ! resolved_to_zero
9e9821dd 3334 && h->root.type == bfd_link_hash_undefweak
d8045f23
NC		 3335 && ! bfd_elf_link_record_dynamic_symbol (info, h))
3336 return FALSE;
c434dee6
AJ		 3337
3338 /* If that succeeded, we know we'll be keeping all the
3339 relocs. */
3340 if (h->dynindx != -1)
3341 goto keep;
3342 }
3343
3344 eh->dyn_relocs = NULL;
04ebc307 3345 eh->func_pointer_refcount = 0;
c434dee6
AJ		 3346
3347 keep: ;
3348 }
3349
3350 /* Finally, allocate space. */
3351 for (p = eh->dyn_relocs; p != NULL; p = p->next)
3352 {
e7c33416
NC		 3353 asection * sreloc;
3354
cbe950e9 3355 sreloc = elf_section_data (p->sec)->sreloc;
e7c33416
NC		 3356
3357 BFD_ASSERT (sreloc != NULL);
3358
351f65ca 3359 sreloc->size += p->count * bed->s->sizeof_rela;
c434dee6
AJ		 3360 }
3361
b34976b6 3362 return TRUE;
c434dee6
AJ		 3363}
3364
c25bc9fc
L		 3365/* Allocate space in .plt, .got and associated reloc sections for
3366 local dynamic relocs. */
3367
3368static bfd_boolean
351f65ca 3369elf_x86_64_allocate_local_dynrelocs (void **slot, void *inf)
c25bc9fc
L		 3370{
3371 struct elf_link_hash_entry *h
3372 = (struct elf_link_hash_entry *) *slot;
3373
3374 if (h->type != STT_GNU_IFUNC
3375 || !h->def_regular
3376 || !h->ref_regular
3377 || !h->forced_local
3378 || h->root.type != bfd_link_hash_defined)
3379 abort ();
3380
351f65ca 3381 return elf_x86_64_allocate_dynrelocs (h, inf);
c25bc9fc
L		 3382}
3383
c434dee6
AJ		 3384/* Find any dynamic relocs that apply to read-only sections. */
3385
b34976b6 3386static bfd_boolean
351f65ca
L		 3387elf_x86_64_readonly_dynrelocs (struct elf_link_hash_entry *h,
3388 void * inf)
c434dee6 3389{
351f65ca 3390 struct elf_x86_64_link_hash_entry *eh;
e03a8ed8 3391 struct elf_dyn_relocs *p;
c434dee6 3392
aa715242
L		 3393 /* Skip local IFUNC symbols. */
3394 if (h->forced_local && h->type == STT_GNU_IFUNC)
3395 return TRUE;
3396
351f65ca 3397 eh = (struct elf_x86_64_link_hash_entry *) h;
c434dee6
AJ		 3398 for (p = eh->dyn_relocs; p != NULL; p = p->next)
3399 {
3400 asection *s = p->sec->output_section;
3401
3402 if (s != NULL && (s->flags & SEC_READONLY) != 0)
3403 {
3404 struct bfd_link_info *info = (struct bfd_link_info *) inf;
3405
3406 info->flags |= DF_TEXTREL;
3407
0e1862bb 3408 if ((info->warn_shared_textrel && bfd_link_pic (info))
1952c5cd 3409 || info->error_textrel)
695344c0 3410 /* xgettext:c-format */
1952c5cd 3411 info->callbacks->einfo (_("%P: %B: warning: relocation against `%s' in readonly section `%A'\n"),
b70321a2
L		 3412 p->sec->owner, h->root.root.string,
3413 p->sec);
3414
c434dee6 3415 /* Not an error, just cut short the traversal. */
b34976b6 3416 return FALSE;
c434dee6
AJ		 3417 }
3418 }
b34976b6 3419 return TRUE;
c434dee6
AJ		 3420}
3421
c175a657 3422/* Convert load via the GOT slot to load immediate. */
daa67607
L		 3423
3424static bfd_boolean
56ceb5b5
L		 3425elf_x86_64_convert_load (bfd *abfd, asection *sec,
3426 struct bfd_link_info *link_info)
daa67607
L		 3427{
3428 Elf_Internal_Shdr *symtab_hdr;
3429 Elf_Internal_Rela *internal_relocs;
3430 Elf_Internal_Rela *irel, *irelend;
3431 bfd_byte *contents;
3432 struct elf_x86_64_link_hash_table *htab;
c175a657 3433 bfd_boolean changed;
daa67607
L		 3434 bfd_signed_vma *local_got_refcounts;
3435
3436 /* Don't even try to convert non-ELF outputs. */
3437 if (!is_elf_hash_table (link_info->hash))
3438 return FALSE;
3439
c1d11331 3440 /* Nothing to do if there is no need or no output. */
daa67607 3441 if ((sec->flags & (SEC_CODE | SEC_RELOC)) != (SEC_CODE | SEC_RELOC)
56ceb5b5 3442 || sec->need_convert_load == 0
c8831961 3443 || bfd_is_abs_section (sec->output_section))
daa67607
L		 3444 return TRUE;
3445
3446 symtab_hdr = &elf_tdata (abfd)->symtab_hdr;
3447
3448 /* Load the relocations for this section. */
3449 internal_relocs = (_bfd_elf_link_read_relocs
3450 (abfd, sec, NULL, (Elf_Internal_Rela *) NULL,
3451 link_info->keep_memory));
3452 if (internal_relocs == NULL)
3453 return FALSE;
3454
c175a657 3455 changed = FALSE;
daa67607 3456 htab = elf_x86_64_hash_table (link_info);
daa67607
L		 3457 local_got_refcounts = elf_local_got_refcounts (abfd);
3458
3459 /* Get the section contents. */
3460 if (elf_section_data (sec)->this_hdr.contents != NULL)
3461 contents = elf_section_data (sec)->this_hdr.contents;
3462 else
3463 {
3464 if (!bfd_malloc_and_get_section (abfd, sec, &contents))
3465 goto error_return;
3466 }
3467
3468 irelend = internal_relocs + sec->reloc_count;
3469 for (irel = internal_relocs; irel < irelend; irel++)
3470 {
3471 unsigned int r_type = ELF32_R_TYPE (irel->r_info);
c175a657 3472 unsigned int r_symndx;
daa67607 3473 struct elf_link_hash_entry *h;
c175a657 3474 bfd_boolean converted;
59cab532 3475
c175a657
L		 3476 if (r_type != R_X86_64_GOTPCRELX
3477 && r_type != R_X86_64_REX_GOTPCRELX
3478 && r_type != R_X86_64_GOTPCREL)
dfc87947
L		 3479 continue;
3480
c175a657 3481 r_symndx = htab->r_sym (irel->r_info);
daa67607 3482 if (r_symndx < symtab_hdr->sh_info)
c175a657
L		 3483 h = elf_x86_64_get_local_sym_hash (htab, sec->owner,
3484 (const Elf_Internal_Rela *) irel,
3485 FALSE);
59cab532
L		 3486 else
3487 {
c175a657 3488 h = elf_sym_hashes (abfd)[r_symndx - symtab_hdr->sh_info];
59cab532
L		 3489 while (h->root.type == bfd_link_hash_indirect
3490 || h->root.type == bfd_link_hash_warning)
3491 h = (struct elf_link_hash_entry *) h->root.u.i.link;
59cab532
L		 3492 }
3493
c175a657
L		 3494 /* STT_GNU_IFUNC must keep GOTPCREL relocations. */
3495 if (h != NULL && h->type == STT_GNU_IFUNC)
3496 continue;
daa67607 3497
c175a657
L		 3498 converted = FALSE;
3499 if (!elf_x86_64_convert_load_reloc (abfd, sec, contents, irel, h,
3500 &converted, link_info))
3501 goto error_return;
56ceb5b5 3502
c175a657 3503 if (converted)
56ceb5b5 3504 {
c175a657
L		 3505 changed = converted;
3506 if (h)
56ceb5b5 3507 {
c175a657
L		 3508 if (h->got.refcount > 0)
3509 h->got.refcount -= 1;
56ceb5b5
L		 3510 }
3511 else
3512 {
c175a657
L		 3513 if (local_got_refcounts != NULL
3514 && local_got_refcounts[r_symndx] > 0)
3515 local_got_refcounts[r_symndx] -= 1;
56ceb5b5 3516 }
daa67607
L		 3517 }
3518 }
3519
3520 if (contents != NULL
3521 && elf_section_data (sec)->this_hdr.contents != contents)
3522 {
c175a657 3523 if (!changed && !link_info->keep_memory)
daa67607
L		 3524 free (contents);
3525 else
3526 {
3527 /* Cache the section contents for elf_link_input_bfd. */
3528 elf_section_data (sec)->this_hdr.contents = contents;
3529 }
3530 }
3531
3532 if (elf_section_data (sec)->relocs != internal_relocs)
3533 {
c175a657 3534 if (!changed)
daa67607
L		 3535 free (internal_relocs);
3536 else
3537 elf_section_data (sec)->relocs = internal_relocs;
3538 }
3539
3540 return TRUE;
3541
3542 error_return:
3543 if (contents != NULL
3544 && elf_section_data (sec)->this_hdr.contents != contents)
3545 free (contents);
3546 if (internal_relocs != NULL
3547 && elf_section_data (sec)->relocs != internal_relocs)
3548 free (internal_relocs);
3549 return FALSE;
3550}
3551
70256ad8
AJ		 3552/* Set the sizes of the dynamic sections. */
3553
b34976b6 3554static bfd_boolean
351f65ca
L		 3555elf_x86_64_size_dynamic_sections (bfd *output_bfd,
3556 struct bfd_link_info *info)
70256ad8 3557{
351f65ca 3558 struct elf_x86_64_link_hash_table *htab;
70256ad8
AJ		 3559 bfd *dynobj;
3560 asection *s;
b34976b6 3561 bfd_boolean relocs;
c434dee6 3562 bfd *ibfd;
351f65ca 3563 const struct elf_backend_data *bed;
70256ad8 3564
351f65ca 3565 htab = elf_x86_64_hash_table (info);
4dfe6ac6
NC		 3566 if (htab == NULL)
3567 return FALSE;
351f65ca 3568 bed = get_elf_backend_data (output_bfd);
4dfe6ac6 3569
c434dee6
AJ		 3570 dynobj = htab->elf.dynobj;
3571 if (dynobj == NULL)
3572 abort ();
70256ad8 3573
c434dee6
AJ		 3574 /* Set up .got offsets for local syms, and space for local dynamic
3575 relocs. */
c72f2fb2 3576 for (ibfd = info->input_bfds; ibfd != NULL; ibfd = ibfd->link.next)
70256ad8 3577 {
c434dee6
AJ		 3578 bfd_signed_vma *local_got;
3579 bfd_signed_vma *end_local_got;
bffbf940 3580 char *local_tls_type;
67a4f2b7 3581 bfd_vma *local_tlsdesc_gotent;
c434dee6
AJ		 3582 bfd_size_type locsymcount;
3583 Elf_Internal_Shdr *symtab_hdr;
3584 asection *srel;
70256ad8 3585
0ffa91dd 3586 if (! is_x86_64_elf (ibfd))
70256ad8
AJ		 3587 continue;
3588
c434dee6 3589 for (s = ibfd->sections; s != NULL; s = s->next)
70256ad8 3590 {
e03a8ed8 3591 struct elf_dyn_relocs *p;
c434dee6 3592
56ceb5b5 3593 if (!elf_x86_64_convert_load (ibfd, s, info))
daa67607
L		 3594 return FALSE;
3595
e03a8ed8 3596 for (p = (struct elf_dyn_relocs *)
e81d3500 3597 (elf_section_data (s)->local_dynrel);
c434dee6
AJ		 3598 p != NULL;
3599 p = p->next)
70256ad8 3600 {
c434dee6
AJ		 3601 if (!bfd_is_abs_section (p->sec)
3602 && bfd_is_abs_section (p->sec->output_section))
3603 {
3604 /* Input section has been discarded, either because
3605 it is a copy of a linkonce section or due to
3606 linker script /DISCARD/, so we'll be discarding
3607 the relocs too. */
3608 }
3609 else if (p->count != 0)
3610 {
3611 srel = elf_section_data (p->sec)->sreloc;
351f65ca 3612 srel->size += p->count * bed->s->sizeof_rela;
4b819e1f
L		 3613 if ((p->sec->output_section->flags & SEC_READONLY) != 0
3614 && (info->flags & DF_TEXTREL) == 0)
b70321a2
L		 3615 {
3616 info->flags |= DF_TEXTREL;
0e1862bb 3617 if ((info->warn_shared_textrel && bfd_link_pic (info))
1952c5cd 3618 || info->error_textrel)
695344c0 3619 /* xgettext:c-format */
1952c5cd 3620 info->callbacks->einfo (_("%P: %B: warning: relocation in readonly section `%A'\n"),
b70321a2 3621 p->sec->owner, p->sec);
b70321a2 3622 }
c434dee6 3623 }
70256ad8
AJ		 3624 }
3625 }
c434dee6
AJ		 3626
3627 local_got = elf_local_got_refcounts (ibfd);
3628 if (!local_got)
3629 continue;
3630
0ffa91dd 3631 symtab_hdr = &elf_symtab_hdr (ibfd);
c434dee6
AJ		 3632 locsymcount = symtab_hdr->sh_info;
3633 end_local_got = local_got + locsymcount;
351f65ca
L		 3634 local_tls_type = elf_x86_64_local_got_tls_type (ibfd);
3635 local_tlsdesc_gotent = elf_x86_64_local_tlsdesc_gotent (ibfd);
6de2ae4a
L		 3636 s = htab->elf.sgot;
3637 srel = htab->elf.srelgot;
67a4f2b7
AO		 3638 for (; local_got < end_local_got;
3639 ++local_got, ++local_tls_type, ++local_tlsdesc_gotent)
70256ad8 3640 {
67a4f2b7 3641 *local_tlsdesc_gotent = (bfd_vma) -1;
c434dee6 3642 if (*local_got > 0)
70256ad8 3643 {
67a4f2b7
AO		 3644 if (GOT_TLS_GDESC_P (*local_tls_type))
3645 {
6de2ae4a 3646 *local_tlsdesc_gotent = htab->elf.sgotplt->size
351f65ca 3647 - elf_x86_64_compute_jump_table_size (htab);
6de2ae4a 3648 htab->elf.sgotplt->size += 2 * GOT_ENTRY_SIZE;
67a4f2b7
AO		 3649 *local_got = (bfd_vma) -2;
3650 }
3651 if (! GOT_TLS_GDESC_P (*local_tls_type)
3652 || GOT_TLS_GD_P (*local_tls_type))
3653 {
3654 *local_got = s->size;
3655 s->size += GOT_ENTRY_SIZE;
3656 if (GOT_TLS_GD_P (*local_tls_type))
3657 s->size += GOT_ENTRY_SIZE;
3658 }
0e1862bb 3659 if (bfd_link_pic (info)
67a4f2b7 3660 || GOT_TLS_GD_ANY_P (*local_tls_type)
bffbf940 3661 || *local_tls_type == GOT_TLS_IE)
67a4f2b7
AO		 3662 {
3663 if (GOT_TLS_GDESC_P (*local_tls_type))
3664 {
6de2ae4a 3665 htab->elf.srelplt->size
351f65ca 3666 += bed->s->sizeof_rela;
67a4f2b7
AO		 3667 htab->tlsdesc_plt = (bfd_vma) -1;
3668 }
3669 if (! GOT_TLS_GDESC_P (*local_tls_type)
3670 || GOT_TLS_GD_P (*local_tls_type))
351f65ca 3671 srel->size += bed->s->sizeof_rela;
67a4f2b7 3672 }
70256ad8
AJ		 3673 }
3674 else
c434dee6
AJ		 3675 *local_got = (bfd_vma) -1;
3676 }
3677 }
70256ad8 3678
bffbf940
JJ		 3679 if (htab->tls_ld_got.refcount > 0)
3680 {
3681 /* Allocate 2 got entries and 1 dynamic reloc for R_X86_64_TLSLD
3682 relocs. */
6de2ae4a
L		 3683 htab->tls_ld_got.offset = htab->elf.sgot->size;
3684 htab->elf.sgot->size += 2 * GOT_ENTRY_SIZE;
351f65ca 3685 htab->elf.srelgot->size += bed->s->sizeof_rela;
bffbf940
JJ		 3686 }
3687 else
3688 htab->tls_ld_got.offset = -1;
3689
c434dee6
AJ		 3690 /* Allocate global sym .plt and .got entries, and space for global
3691 sym dynamic relocs. */
351f65ca 3692 elf_link_hash_traverse (&htab->elf, elf_x86_64_allocate_dynrelocs,
eb4ff4d6 3693 info);
c434dee6 3694
c25bc9fc
L		 3695 /* Allocate .plt and .got entries, and space for local symbols. */
3696 htab_traverse (htab->loc_hash_table,
351f65ca 3697 elf_x86_64_allocate_local_dynrelocs,
c25bc9fc
L		 3698 info);
3699
67a4f2b7
AO		 3700 /* For every jump slot reserved in the sgotplt, reloc_count is
3701 incremented. However, when we reserve space for TLS descriptors,
3702 it's not incremented, so in order to compute the space reserved
3703 for them, it suffices to multiply the reloc count by the jump
e1f98742
L		 3704 slot size.
3705
3706 PR ld/13302: We start next_irelative_index at the end of .rela.plt
3707 so that R_X86_64_IRELATIVE entries come last. */
6de2ae4a 3708 if (htab->elf.srelplt)
e1f98742
L		 3709 {
3710 htab->sgotplt_jump_table_size
3711 = elf_x86_64_compute_jump_table_size (htab);
3712 htab->next_irelative_index = htab->elf.srelplt->reloc_count - 1;
3713 }
3714 else if (htab->elf.irelplt)
3715 htab->next_irelative_index = htab->elf.irelplt->reloc_count - 1;
67a4f2b7
AO		 3716
3717 if (htab->tlsdesc_plt)
3718 {
3719 /* If we're not using lazy TLS relocations, don't generate the
3720 PLT and GOT entries they require. */
3721 if ((info->flags & DF_BIND_NOW))
3722 htab->tlsdesc_plt = 0;
3723 else
3724 {
6de2ae4a
L		 3725 htab->tlsdesc_got = htab->elf.sgot->size;
3726 htab->elf.sgot->size += GOT_ENTRY_SIZE;
67a4f2b7
AO		 3727 /* Reserve room for the initial entry.
3728 FIXME: we could probably do away with it in this case. */
6de2ae4a 3729 if (htab->elf.splt->size == 0)
38b12349 3730 htab->elf.splt->size = htab->plt.plt_entry_size;
6de2ae4a 3731 htab->tlsdesc_plt = htab->elf.splt->size;
38b12349 3732 htab->elf.splt->size += htab->plt.plt_entry_size;
67a4f2b7
AO		 3733 }
3734 }
3735
a7b16ceb
L		 3736 if (htab->elf.sgotplt)
3737 {
3738 /* Don't allocate .got.plt section if there are no GOT nor PLT
eed180f8 3739 entries and there is no refeence to _GLOBAL_OFFSET_TABLE_. */
9d4b2dba
L		 3740 if ((htab->elf.hgot == NULL
3741 || !htab->elf.hgot->ref_regular_nonweak)
e28df02b
L		 3742 && (htab->elf.sgotplt->size
3743 == get_elf_backend_data (output_bfd)->got_header_size)
a7b16ceb
L		 3744 && (htab->elf.splt == NULL
3745 || htab->elf.splt->size == 0)
3746 && (htab->elf.sgot == NULL
3747 || htab->elf.sgot->size == 0)
3748 && (htab->elf.iplt == NULL
3749 || htab->elf.iplt->size == 0)
3750 && (htab->elf.igotplt == NULL
3751 || htab->elf.igotplt->size == 0))
3752 htab->elf.sgotplt->size = 0;
3753 }
3754
fff53dae 3755 if (_bfd_elf_eh_frame_present (info))
9a2a56cc 3756 {
fff53dae
L		 3757 if (htab->plt_eh_frame != NULL
3758 && htab->elf.splt != NULL
3759 && htab->elf.splt->size != 0
3760 && !bfd_is_abs_section (htab->elf.splt->output_section))
38b12349 3761 htab->plt_eh_frame->size = htab->plt.eh_frame_plt_size;
fff53dae
L		 3762
3763 if (htab->plt_got_eh_frame != NULL
3764 && htab->plt_got != NULL
3765 && htab->plt_got->size != 0
3766 && !bfd_is_abs_section (htab->plt_got->output_section))
38b12349
L		 3767 htab->plt_got_eh_frame->size
3768 = htab->non_lazy_plt->eh_frame_plt_size;
8361ed4d 3769
f2c29a16 3770 /* Unwind info for the second PLT and .plt.got sections are
8361ed4d 3771 identical. */
f2c29a16
L		 3772 if (htab->plt_second_eh_frame != NULL
3773 && htab->plt_second != NULL
3774 && htab->plt_second->size != 0
3775 && !bfd_is_abs_section (htab->plt_second->output_section))
3776 htab->plt_second_eh_frame->size
38b12349 3777 = htab->non_lazy_plt->eh_frame_plt_size;
9a2a56cc
AM		 3778 }
3779
c434dee6
AJ		 3780 /* We now have determined the sizes of the various dynamic sections.
3781 Allocate memory for them. */
b34976b6 3782 relocs = FALSE;
c434dee6
AJ		 3783 for (s = dynobj->sections; s != NULL; s = s->next)
3784 {
3785 if ((s->flags & SEC_LINKER_CREATED) == 0)
3786 continue;
3787
6de2ae4a
L		 3788 if (s == htab->elf.splt
3789 || s == htab->elf.sgot
3790 || s == htab->elf.sgotplt
3791 || s == htab->elf.iplt
3792 || s == htab->elf.igotplt
f2c29a16 3793 || s == htab->plt_second
dd7e64d4 3794 || s == htab->plt_got
9a2a56cc 3795 || s == htab->plt_eh_frame
fff53dae 3796 || s == htab->plt_got_eh_frame
f2c29a16 3797 || s == htab->plt_second_eh_frame
5474d94f
AM		 3798 || s == htab->elf.sdynbss
3799 || s == htab->elf.sdynrelro)
c434dee6
AJ		 3800 {
3801 /* Strip this section if we don't need it; see the
3802 comment below. */
3803 }
0112cd26 3804 else if (CONST_STRNEQ (bfd_get_section_name (dynobj, s), ".rela"))
c434dee6 3805 {
6de2ae4a 3806 if (s->size != 0 && s != htab->elf.srelplt)
b34976b6 3807 relocs = TRUE;
c434dee6
AJ		 3808
3809 /* We use the reloc_count field as a counter if we need
3810 to copy relocs into the output file. */
6de2ae4a 3811 if (s != htab->elf.srelplt)
67a4f2b7 3812 s->reloc_count = 0;
70256ad8 3813 }
c434dee6 3814 else
70256ad8
AJ		 3815 {
3816 /* It's not one of our sections, so don't allocate space. */
3817 continue;
3818 }
3819
eea6121a 3820 if (s->size == 0)
70256ad8 3821 {
c434dee6
AJ		 3822 /* If we don't need this section, strip it from the
3823 output file. This is mostly to handle .rela.bss and
3824 .rela.plt. We must create both sections in
3825 create_dynamic_sections, because they must be created
3826 before the linker maps input sections to output
3827 sections. The linker does that before
3828 adjust_dynamic_symbol is called, and it is that
3829 function which decides whether anything needs to go
3830 into these sections. */
3831
8423293d 3832 s->flags |= SEC_EXCLUDE;
70256ad8
AJ		 3833 continue;
3834 }
3835
c456f082
AM		 3836 if ((s->flags & SEC_HAS_CONTENTS) == 0)
3837 continue;
3838
70256ad8
AJ		 3839 /* Allocate memory for the section contents. We use bfd_zalloc
3840 here in case unused entries are not reclaimed before the
3841 section's contents are written out. This should not happen,
3842 but this way if it does, we get a R_X86_64_NONE reloc instead
3843 of garbage. */
eea6121a 3844 s->contents = (bfd_byte *) bfd_zalloc (dynobj, s->size);
c434dee6 3845 if (s->contents == NULL)
b34976b6 3846 return FALSE;
70256ad8
AJ		 3847 }
3848
e41b3a13 3849 if (htab->plt_eh_frame != NULL
9a2a56cc
AM		 3850 && htab->plt_eh_frame->contents != NULL)
3851 {
9a2a56cc 3852 memcpy (htab->plt_eh_frame->contents,
38b12349 3853 htab->plt.eh_frame_plt, htab->plt_eh_frame->size);
9a2a56cc
AM		 3854 bfd_put_32 (dynobj, htab->elf.splt->size,
3855 htab->plt_eh_frame->contents + PLT_FDE_LEN_OFFSET);
3856 }
e41b3a13 3857
fff53dae
L		 3858 if (htab->plt_got_eh_frame != NULL
3859 && htab->plt_got_eh_frame->contents != NULL)
3860 {
fff53dae 3861 memcpy (htab->plt_got_eh_frame->contents,
38b12349 3862 htab->non_lazy_plt->eh_frame_plt,
fff53dae
L		 3863 htab->plt_got_eh_frame->size);
3864 bfd_put_32 (dynobj, htab->plt_got->size,
3865 (htab->plt_got_eh_frame->contents
3866 + PLT_FDE_LEN_OFFSET));
3867 }
3868
f2c29a16
L		 3869 if (htab->plt_second_eh_frame != NULL
3870 && htab->plt_second_eh_frame->contents != NULL)
8361ed4d 3871 {
f2c29a16 3872 memcpy (htab->plt_second_eh_frame->contents,
38b12349 3873 htab->non_lazy_plt->eh_frame_plt,
f2c29a16
L		 3874 htab->plt_second_eh_frame->size);
3875 bfd_put_32 (dynobj, htab->plt_second->size,
3876 (htab->plt_second_eh_frame->contents
8361ed4d
L		 3877 + PLT_FDE_LEN_OFFSET));
3878 }
3879
c434dee6 3880 if (htab->elf.dynamic_sections_created)
70256ad8
AJ		 3881 {
3882 /* Add some entries to the .dynamic section. We fill in the
351f65ca 3883 values later, in elf_x86_64_finish_dynamic_sections, but we
70256ad8 3884 must add the entries now so that we get the correct size for
407443a3 3885 the .dynamic section. The DT_DEBUG entry is filled in by the
70256ad8 3886 dynamic linker and used by the debugger. */
dc810e39 3887#define add_dynamic_entry(TAG, VAL) \
5a580b3a 3888 _bfd_elf_add_dynamic_entry (info, TAG, VAL)
dc810e39 3889
0e1862bb 3890 if (bfd_link_executable (info))
70256ad8 3891 {
dc810e39 3892 if (!add_dynamic_entry (DT_DEBUG, 0))
b34976b6 3893 return FALSE;
70256ad8
AJ		 3894 }
3895
6de2ae4a 3896 if (htab->elf.splt->size != 0)
70256ad8 3897 {
7c1e8d3e
L		 3898 /* DT_PLTGOT is used by prelink even if there is no PLT
3899 relocation. */
3900 if (!add_dynamic_entry (DT_PLTGOT, 0))
b34976b6 3901 return FALSE;
97d343d4 3902 }
67a4f2b7 3903
97d343d4
L		 3904 if (htab->elf.srelplt->size != 0)
3905 {
3906 if (!add_dynamic_entry (DT_PLTRELSZ, 0)
3907 || !add_dynamic_entry (DT_PLTREL, DT_RELA)
3908 || !add_dynamic_entry (DT_JMPREL, 0))
67a4f2b7 3909 return FALSE;
70256ad8
AJ		 3910 }
3911
97d343d4
L		 3912 if (htab->tlsdesc_plt
3913 && (!add_dynamic_entry (DT_TLSDESC_PLT, 0)
3914 || !add_dynamic_entry (DT_TLSDESC_GOT, 0)))
3915 return FALSE;
3916
70256ad8
AJ		 3917 if (relocs)
3918 {
dc810e39
AM		 3919 if (!add_dynamic_entry (DT_RELA, 0)
3920 || !add_dynamic_entry (DT_RELASZ, 0)
351f65ca 3921 || !add_dynamic_entry (DT_RELAENT, bed->s->sizeof_rela))
b34976b6 3922 return FALSE;
70256ad8 3923
c434dee6
AJ		 3924 /* If any dynamic relocs apply to a read-only section,
3925 then we need a DT_TEXTREL entry. */
3926 if ((info->flags & DF_TEXTREL) == 0)
eed180f8 3927 elf_link_hash_traverse (&htab->elf,
351f65ca 3928 elf_x86_64_readonly_dynrelocs,
eb4ff4d6 3929 info);
c434dee6
AJ		 3930
3931 if ((info->flags & DF_TEXTREL) != 0)
3932 {
2df3368d 3933 if (htab->readonly_dynrelocs_against_ifunc)
8efa2874
L		 3934 {
3935 info->callbacks->einfo
3936 (_("%P%X: read-only segment has dynamic IFUNC relocations; recompile with -fPIC\n"));
3937 bfd_set_error (bfd_error_bad_value);
3938 return FALSE;
3939 }
3940
c434dee6 3941 if (!add_dynamic_entry (DT_TEXTREL, 0))
b34976b6 3942 return FALSE;
c434dee6 3943 }
70256ad8
AJ		 3944 }
3945 }
dc810e39 3946#undef add_dynamic_entry
70256ad8 3947
b34976b6 3948 return TRUE;
70256ad8
AJ		 3949}
3950
67a4f2b7 3951static bfd_boolean
351f65ca
L		 3952elf_x86_64_always_size_sections (bfd *output_bfd,
3953 struct bfd_link_info *info)
67a4f2b7
AO		 3954{
3955 asection *tls_sec = elf_hash_table (info)->tls_sec;
3956
3957 if (tls_sec)
3958 {
3959 struct elf_link_hash_entry *tlsbase;
3960
3961 tlsbase = elf_link_hash_lookup (elf_hash_table (info),
3962 "_TLS_MODULE_BASE_",
3963 FALSE, FALSE, FALSE);
3964
3965 if (tlsbase && tlsbase->type == STT_TLS)
3966 {
351f65ca 3967 struct elf_x86_64_link_hash_table *htab;
67a4f2b7
AO		 3968 struct bfd_link_hash_entry *bh = NULL;
3969 const struct elf_backend_data *bed
3970 = get_elf_backend_data (output_bfd);
3971
351f65ca 3972 htab = elf_x86_64_hash_table (info);
4dfe6ac6
NC		 3973 if (htab == NULL)
3974 return FALSE;
3975
67a4f2b7
AO		 3976 if (!(_bfd_generic_link_add_one_symbol
3977 (info, output_bfd, "_TLS_MODULE_BASE_", BSF_LOCAL,
3978 tls_sec, 0, NULL, FALSE,
3979 bed->collect, &bh)))
3980 return FALSE;
9f03412a 3981
4dfe6ac6 3982 htab->tls_module_base = bh;
9f03412a 3983
67a4f2b7
AO		 3984 tlsbase = (struct elf_link_hash_entry *)bh;
3985 tlsbase->def_regular = 1;
3986 tlsbase->other = STV_HIDDEN;
576fa883 3987 tlsbase->root.linker_def = 1;
67a4f2b7
AO		 3988 (*bed->elf_backend_hide_symbol) (info, tlsbase, TRUE);
3989 }
3990 }
3991
3992 return TRUE;
3993}
3994
9f03412a
AO		 3995/* _TLS_MODULE_BASE_ needs to be treated especially when linking
3996 executables. Rather than setting it to the beginning of the TLS
3997 section, we have to set it to the end. This function may be called
3998 multiple times, it is idempotent. */
3999
4000static void
351f65ca 4001elf_x86_64_set_tls_module_base (struct bfd_link_info *info)
9f03412a 4002{
351f65ca 4003 struct elf_x86_64_link_hash_table *htab;
9f03412a
AO		 4004 struct bfd_link_hash_entry *base;
4005
0e1862bb 4006 if (!bfd_link_executable (info))
9f03412a
AO		 4007 return;
4008
351f65ca 4009 htab = elf_x86_64_hash_table (info);
4dfe6ac6
NC		 4010 if (htab == NULL)
4011 return;
9f03412a 4012
4dfe6ac6
NC		 4013 base = htab->tls_module_base;
4014 if (base == NULL)
9f03412a
AO		 4015 return;
4016
4dfe6ac6 4017 base->u.def.value = htab->elf.tls_size;
9f03412a
AO		 4018}
4019
bffbf940
JJ		 4020/* Return the base VMA address which should be subtracted from real addresses
4021 when resolving @dtpoff relocation.
4022 This is PT_TLS segment p_vaddr. */
4023
4024static bfd_vma
351f65ca 4025elf_x86_64_dtpoff_base (struct bfd_link_info *info)
bffbf940 4026{
e1918d23
AM		 4027 /* If tls_sec is NULL, we should have signalled an error already. */
4028 if (elf_hash_table (info)->tls_sec == NULL)
bffbf940 4029 return 0;
e1918d23 4030 return elf_hash_table (info)->tls_sec->vma;
bffbf940
JJ		 4031}
4032
4033/* Return the relocation value for @tpoff relocation
4034 if STT_TLS virtual address is ADDRESS. */
4035
4036static bfd_vma
351f65ca 4037elf_x86_64_tpoff (struct bfd_link_info *info, bfd_vma address)
bffbf940 4038{
e1918d23 4039 struct elf_link_hash_table *htab = elf_hash_table (info);
7dc98aea
RO		 4040 const struct elf_backend_data *bed = get_elf_backend_data (info->output_bfd);
4041 bfd_vma static_tls_size;
bffbf940
JJ		 4042
4043 /* If tls_segment is NULL, we should have signalled an error already. */
e1918d23 4044 if (htab->tls_sec == NULL)
bffbf940 4045 return 0;
7dc98aea
RO		 4046
4047 /* Consider special static TLS alignment requirements. */
4048 static_tls_size = BFD_ALIGN (htab->tls_size, bed->static_tls_alignment);
4049 return address - static_tls_size - htab->tls_sec->vma;
bffbf940
JJ		 4050}
4051
90f487df
L		 4052/* Is the instruction before OFFSET in CONTENTS a 32bit relative
4053 branch? */
4054
4055static bfd_boolean
4056is_32bit_relative_branch (bfd_byte *contents, bfd_vma offset)
4057{
4058 /* Opcode Instruction
4059 0xe8 call
4060 0xe9 jump
4061 0x0f 0x8x conditional jump */
4062 return ((offset > 0
4063 && (contents [offset - 1] == 0xe8
4064 || contents [offset - 1] == 0xe9))
4065 || (offset > 1
4066 && contents [offset - 2] == 0x0f
4067 && (contents [offset - 1] & 0xf0) == 0x80));
4068}
4069
8d88c4ca
NC		 4070/* Relocate an x86_64 ELF section. */
4071
b34976b6 4072static bfd_boolean
351f65ca
L		 4073elf_x86_64_relocate_section (bfd *output_bfd,
4074 struct bfd_link_info *info,
4075 bfd *input_bfd,
4076 asection *input_section,
4077 bfd_byte *contents,
4078 Elf_Internal_Rela *relocs,
4079 Elf_Internal_Sym *local_syms,
4080 asection **local_sections)
8d88c4ca 4081{
351f65ca 4082 struct elf_x86_64_link_hash_table *htab;
8d88c4ca
NC		 4083 Elf_Internal_Shdr *symtab_hdr;
4084 struct elf_link_hash_entry **sym_hashes;
4085 bfd_vma *local_got_offsets;
67a4f2b7 4086 bfd_vma *local_tlsdesc_gotents;
c434dee6 4087 Elf_Internal_Rela *rel;
60f2e42e 4088 Elf_Internal_Rela *wrel;
8d88c4ca 4089 Elf_Internal_Rela *relend;
38b12349 4090 unsigned int plt_entry_size;
8d88c4ca 4091
0ffa91dd
NC		 4092 BFD_ASSERT (is_x86_64_elf (input_bfd));
4093
338c190a
L		 4094 /* Skip if check_relocs failed. */
4095 if (input_section->check_relocs_failed)
4096 return FALSE;
4097
351f65ca 4098 htab = elf_x86_64_hash_table (info);
4dfe6ac6
NC		 4099 if (htab == NULL)
4100 return FALSE;
38b12349 4101 plt_entry_size = htab->plt.plt_entry_size;
0ffa91dd 4102 symtab_hdr = &elf_symtab_hdr (input_bfd);
8d88c4ca
NC		 4103 sym_hashes = elf_sym_hashes (input_bfd);
4104 local_got_offsets = elf_local_got_offsets (input_bfd);
351f65ca 4105 local_tlsdesc_gotents = elf_x86_64_local_tlsdesc_gotent (input_bfd);
8d88c4ca 4106
351f65ca 4107 elf_x86_64_set_tls_module_base (info);
9f03412a 4108
60f2e42e 4109 rel = wrel = relocs;
8d88c4ca 4110 relend = relocs + input_section->reloc_count;
60f2e42e 4111 for (; rel < relend; wrel++, rel++)
8d88c4ca 4112 {
bffbf940 4113 unsigned int r_type;
8d88c4ca
NC		 4114 reloc_howto_type *howto;
4115 unsigned long r_symndx;
4116 struct elf_link_hash_entry *h;
0ff2b86e 4117 struct elf_x86_64_link_hash_entry *eh;
8d88c4ca
NC		 4118 Elf_Internal_Sym *sym;
4119 asection *sec;
0ff2b86e 4120 bfd_vma off, offplt, plt_offset;
8d88c4ca 4121 bfd_vma relocation;
b34976b6 4122 bfd_boolean unresolved_reloc;
8d88c4ca 4123 bfd_reloc_status_type r;
bffbf940 4124 int tls_type;
0ff2b86e 4125 asection *base_got, *resolved_plt;
1788fc08 4126 bfd_vma st_size;
aec6b87e 4127 bfd_boolean resolved_to_zero;
9e9821dd 4128 bfd_boolean relative_reloc;
8d88c4ca 4129
351f65ca 4130 r_type = ELF32_R_TYPE (rel->r_info);
fe4770f4
AJ		 4131 if (r_type == (int) R_X86_64_GNU_VTINHERIT
4132 || r_type == (int) R_X86_64_GNU_VTENTRY)
18954b29
L		 4133 {
4134 if (wrel != rel)
4135 *wrel = *rel;
4136 continue;
4137 }
8d88c4ca 4138
9911c0fc 4139 if (r_type >= (int) R_X86_64_standard)
8da6118f 4140 {
4eca0228 4141 _bfd_error_handler
695344c0 4142 /* xgettext:c-format */
9911c0fc 4143 (_("%B: unrecognized relocation (0x%x) in section `%A'"),
c08bb8dd 4144 input_bfd, r_type, input_section);
8da6118f 4145 bfd_set_error (bfd_error_bad_value);
b34976b6 4146 return FALSE;
8da6118f 4147 }
8d88c4ca 4148
d7921315 4149 if (r_type != (int) R_X86_64_32
eed180f8 4150 || ABI_64_P (output_bfd))
d7921315
L		 4151 howto = x86_64_elf_howto_table + r_type;
4152 else
4153 howto = (x86_64_elf_howto_table
4154 + ARRAY_SIZE (x86_64_elf_howto_table) - 1);
351f65ca 4155 r_symndx = htab->r_sym (rel->r_info);
8d88c4ca
NC		 4156 h = NULL;
4157 sym = NULL;
4158 sec = NULL;
b34976b6 4159 unresolved_reloc = FALSE;
8d88c4ca 4160 if (r_symndx < symtab_hdr->sh_info)
8da6118f
KH		 4161 {
4162 sym = local_syms + r_symndx;
4163 sec = local_sections[r_symndx];
c434dee6 4164
c25bc9fc
L		 4165 relocation = _bfd_elf_rela_local_sym (output_bfd, sym,
4166 &sec, rel);
1788fc08 4167 st_size = sym->st_size;
c25bc9fc
L		 4168
4169 /* Relocate against local STT_GNU_IFUNC symbol. */
0e1862bb 4170 if (!bfd_link_relocatable (info)
351f65ca 4171 && ELF_ST_TYPE (sym->st_info) == STT_GNU_IFUNC)
c25bc9fc 4172 {
351f65ca
L		 4173 h = elf_x86_64_get_local_sym_hash (htab, input_bfd,
4174 rel, FALSE);
c25bc9fc
L		 4175 if (h == NULL)
4176 abort ();
4177
eed180f8 4178 /* Set STT_GNU_IFUNC symbol value. */
c25bc9fc
L		 4179 h->root.u.def.value = sym->st_value;
4180 h->root.u.def.section = sec;
4181 }
8da6118f 4182 }
8d88c4ca 4183 else
8da6118f 4184 {
c9736ba0 4185 bfd_boolean warned ATTRIBUTE_UNUSED;
62d887d4 4186 bfd_boolean ignored ATTRIBUTE_UNUSED;
c434dee6 4187
b2a8e766
AM		 4188 RELOC_FOR_GLOBAL_SYMBOL (info, input_bfd, input_section, rel,
4189 r_symndx, symtab_hdr, sym_hashes,
4190 h, sec, relocation,
62d887d4 4191 unresolved_reloc, warned, ignored);
1788fc08 4192 st_size = h->size;
8da6118f 4193 }
ab96bf03 4194
dbaa2011 4195 if (sec != NULL && discarded_section (sec))
60f2e42e
L		 4196 {
4197 _bfd_clear_contents (howto, input_bfd, input_section,
4198 contents + rel->r_offset);
4199 wrel->r_offset = rel->r_offset;
4200 wrel->r_info = 0;
4201 wrel->r_addend = 0;
4202
4203 /* For ld -r, remove relocations in debug sections against
4204 sections defined in discarded sections. Not done for
4205 eh_frame editing code expects to be present. */
4206 if (bfd_link_relocatable (info)
4207 && (input_section->flags & SEC_DEBUGGING))
4208 wrel--;
4209
4210 continue;
4211 }
ab96bf03 4212
0e1862bb 4213 if (bfd_link_relocatable (info))
2d5da473
L		 4214 {
4215 if (wrel != rel)
4216 *wrel = *rel;
4217 continue;
4218 }
ab96bf03 4219
1788fc08 4220 if (rel->r_addend == 0 && !ABI_64_P (output_bfd))
64d25c44 4221 {
1788fc08
L		 4222 if (r_type == R_X86_64_64)
4223 {
4224 /* For x32, treat R_X86_64_64 like R_X86_64_32 and
4225 zero-extend it to 64bit if addend is zero. */
4226 r_type = R_X86_64_32;
4227 memset (contents + rel->r_offset + 4, 0, 4);
4228 }
4229 else if (r_type == R_X86_64_SIZE64)
4230 {
4231 /* For x32, treat R_X86_64_SIZE64 like R_X86_64_SIZE32 and
4232 zero-extend it to 64bit if addend is zero. */
4233 r_type = R_X86_64_SIZE32;
4234 memset (contents + rel->r_offset + 4, 0, 4);
4235 }
64d25c44
L		 4236 }
4237
0ff2b86e
L		 4238 eh = (struct elf_x86_64_link_hash_entry *) h;
4239
cbe950e9
L		 4240 /* Since STT_GNU_IFUNC symbol must go through PLT, we handle
4241 it here if it is defined in a non-shared object. */
4242 if (h != NULL
4243 && h->type == STT_GNU_IFUNC
4244 && h->def_regular)
4245 {
cbe950e9 4246 bfd_vma plt_index;
4c544807 4247 const char *name;
cbe950e9 4248
97dc35c8
L		 4249 if ((input_section->flags & SEC_ALLOC) == 0)
4250 {
4251 /* Dynamic relocs are not propagated for SEC_DEBUGGING
4252 sections because such sections are not SEC_ALLOC and
4253 thus ld.so will not process them. */
4254 if ((input_section->flags & SEC_DEBUGGING) != 0)
0eace210 4255 continue;
97dc35c8
L		 4256 abort ();
4257 }
233cc9c1
L		 4258
4259 switch (r_type)
4260 {
4261 default:
4262 break;
4263
4264 case R_X86_64_GOTPCREL:
4265 case R_X86_64_GOTPCRELX:
4266 case R_X86_64_REX_GOTPCRELX:
4267 case R_X86_64_GOTPCREL64:
4268 base_got = htab->elf.sgot;
4269 off = h->got.offset;
4270
4271 if (base_got == NULL)
4272 abort ();
4273
4274 if (off == (bfd_vma) -1)
4275 {
4276 /* We can't use h->got.offset here to save state, or
4277 even just remember the offset, as finish_dynamic_symbol
4278 would use that as offset into .got. */
4279
4280 if (h->plt.offset == (bfd_vma) -1)
4281 abort ();
4282
4283 if (htab->elf.splt != NULL)
4284 {
38b12349
L		 4285 plt_index = (h->plt.offset / plt_entry_size
4286 - htab->plt.has_plt0);
233cc9c1
L		 4287 off = (plt_index + 3) * GOT_ENTRY_SIZE;
4288 base_got = htab->elf.sgotplt;
4289 }
4290 else
4291 {
4292 plt_index = h->plt.offset / plt_entry_size;
4293 off = plt_index * GOT_ENTRY_SIZE;
4294 base_got = htab->elf.igotplt;
4295 }
4296
4297 if (h->dynindx == -1
4298 || h->forced_local
4299 || info->symbolic)
4300 {
4301 /* This references the local defitionion. We must
4302 initialize this entry in the global offset table.
4303 Since the offset must always be a multiple of 8,
4304 we use the least significant bit to record
4305 whether we have initialized it already.
4306
4307 When doing a dynamic link, we create a .rela.got
4308 relocation entry to initialize the value. This
4309 is done in the finish_dynamic_symbol routine. */
4310 if ((off & 1) != 0)
4311 off &= ~1;
4312 else
4313 {
4314 bfd_put_64 (output_bfd, relocation,
4315 base_got->contents + off);
4316 /* Note that this is harmless for the GOTPLT64
4317 case, as -1 | 1 still is -1. */
4318 h->got.offset |= 1;
4319 }
4320 }
4321 }
4322
4323 relocation = (base_got->output_section->vma
4324 + base_got->output_offset + off);
4325
4326 goto do_relocation;
4327 }
4328
4329 if (h->plt.offset == (bfd_vma) -1)
4330 {
4331 /* Handle static pointers of STT_GNU_IFUNC symbols. */
4332 if (r_type == htab->pointer_r_type
4333 && (input_section->flags & SEC_CODE) == 0)
4334 goto do_ifunc_pointer;
4335 goto bad_ifunc_reloc;
4336 }
cbe950e9
L		 4337
4338 /* STT_GNU_IFUNC symbol must go through PLT. */
0ff2b86e
L		 4339 if (htab->elf.splt != NULL)
4340 {
f2c29a16 4341 if (htab->plt_second != NULL)
0ff2b86e 4342 {
f2c29a16
L		 4343 resolved_plt = htab->plt_second;
4344 plt_offset = eh->plt_second.offset;
0ff2b86e
L		 4345 }
4346 else
4347 {
4348 resolved_plt = htab->elf.splt;
4349 plt_offset = h->plt.offset;
4350 }
4351 }
4352 else
4353 {
4354 resolved_plt = htab->elf.iplt;
4355 plt_offset = h->plt.offset;
4356 }
4357
4358 relocation = (resolved_plt->output_section->vma
4359 + resolved_plt->output_offset + plt_offset);
cbe950e9
L		 4360
4361 switch (r_type)
4362 {
4363 default:
233cc9c1 4364bad_ifunc_reloc:
4c544807
L		 4365 if (h->root.root.string)
4366 name = h->root.root.string;
4367 else
4368 name = bfd_elf_sym_name (input_bfd, symtab_hdr, sym,
4369 NULL);
4eca0228 4370 _bfd_error_handler
695344c0 4371 /* xgettext:c-format */
cbe950e9 4372 (_("%B: relocation %s against STT_GNU_IFUNC "
233cc9c1
L		 4373 "symbol `%s' isn't supported"), input_bfd,
4374 howto->name, name);
cbe950e9
L		 4375 bfd_set_error (bfd_error_bad_value);
4376 return FALSE;
4377
4378 case R_X86_64_32S:
0e1862bb 4379 if (bfd_link_pic (info))
cbe950e9 4380 abort ();
710ab287
L		 4381 goto do_relocation;
4382
248775ba
L		 4383 case R_X86_64_32:
4384 if (ABI_64_P (output_bfd))
4385 goto do_relocation;
17672001 4386 /* FALLTHROUGH */
eed180f8 4387 case R_X86_64_64:
233cc9c1 4388do_ifunc_pointer:
710ab287
L		 4389 if (rel->r_addend != 0)
4390 {
4c544807
L		 4391 if (h->root.root.string)
4392 name = h->root.root.string;
4393 else
4394 name = bfd_elf_sym_name (input_bfd, symtab_hdr,
4395 sym, NULL);
4eca0228 4396 _bfd_error_handler
695344c0 4397 /* xgettext:c-format */
710ab287
L		 4398 (_("%B: relocation %s against STT_GNU_IFUNC "
4399 "symbol `%s' has non-zero addend: %d"),
ef77d6af 4400 input_bfd, howto->name, name, rel->r_addend);
710ab287
L		 4401 bfd_set_error (bfd_error_bad_value);
4402 return FALSE;
4403 }
4404
4405 /* Generate dynamic relcoation only when there is a
233cc9c1
L		 4406 non-GOT reference in a shared object or there is no
4407 PLT. */
4408 if ((bfd_link_pic (info) && h->non_got_ref)
4409 || h->plt.offset == (bfd_vma) -1)
710ab287
L		 4410 {
4411 Elf_Internal_Rela outrel;
710ab287
L		 4412 asection *sreloc;
4413
c25bc9fc
L		 4414 /* Need a dynamic relocation to get the real function
4415 address. */
710ab287
L		 4416 outrel.r_offset = _bfd_elf_section_offset (output_bfd,
4417 info,
4418 input_section,
4419 rel->r_offset);
4420 if (outrel.r_offset == (bfd_vma) -1
4421 || outrel.r_offset == (bfd_vma) -2)
4422 abort ();
4423
4424 outrel.r_offset += (input_section->output_section->vma
4425 + input_section->output_offset);
4426
4427 if (h->dynindx == -1
44c4ea11 4428 || h->forced_local
0e1862bb 4429 || bfd_link_executable (info))
710ab287 4430 {
6322e5c5
L		 4431 info->callbacks->minfo (_("Local IFUNC function `%s' in %B\n"),
4432 h->root.root.string,
4433 h->root.u.def.section->owner);
4434
710ab287 4435 /* This symbol is resolved locally. */
56b8aada
L		 4436 outrel.r_info = htab->r_info (0, R_X86_64_IRELATIVE);
4437 outrel.r_addend = (h->root.u.def.value
4438 + h->root.u.def.section->output_section->vma
4439 + h->root.u.def.section->output_offset);
710ab287
L		 4440 }
4441 else
4442 {
351f65ca 4443 outrel.r_info = htab->r_info (h->dynindx, r_type);
710ab287
L		 4444 outrel.r_addend = 0;
4445 }
4446
233cc9c1
L		 4447 /* Dynamic relocations are stored in
4448 1. .rela.ifunc section in PIC object.
4449 2. .rela.got section in dynamic executable.
4450 3. .rela.iplt section in static executable. */
4451 if (bfd_link_pic (info))
4452 sreloc = htab->elf.irelifunc;
4453 else if (htab->elf.splt != NULL)
4454 sreloc = htab->elf.srelgot;
4455 else
4456 sreloc = htab->elf.irelplt;
351f65ca 4457 elf_append_rela (output_bfd, sreloc, &outrel);
710ab287
L		 4458
4459 /* If this reloc is against an external symbol, we
4460 do not want to fiddle with the addend. Otherwise,
4461 we need to include the symbol value so that it
4462 becomes an addend for the dynamic reloc. For an
4463 internal symbol, we have updated addend. */
56b8aada 4464 continue;
710ab287 4465 }
17672001 4466 /* FALLTHROUGH */
cbe950e9 4467 case R_X86_64_PC32:
c3320543 4468 case R_X86_64_PC32_BND:
cbe950e9
L		 4469 case R_X86_64_PC64:
4470 case R_X86_64_PLT32:
c3320543 4471 case R_X86_64_PLT32_BND:
cbe950e9 4472 goto do_relocation;
cbe950e9
L		 4473 }
4474 }
4475
aec6b87e 4476 resolved_to_zero = (eh != NULL
e62b9723
L		 4477 && UNDEFINED_WEAK_RESOLVED_TO_ZERO (info,
4478 eh->has_got_reloc,
4479 eh));
aec6b87e 4480
70256ad8
AJ		 4481 /* When generating a shared object, the relocations handled here are
4482 copied into the output file to be resolved at run time. */
4483 switch (r_type)
4484 {
4485 case R_X86_64_GOT32:
7b81dfbb 4486 case R_X86_64_GOT64:
70256ad8
AJ		 4487 /* Relocation is to the entry for this symbol in the global
4488 offset table. */
70256ad8 4489 case R_X86_64_GOTPCREL:
56ceb5b5
L		 4490 case R_X86_64_GOTPCRELX:
4491 case R_X86_64_REX_GOTPCRELX:
7b81dfbb
AJ		 4492 case R_X86_64_GOTPCREL64:
4493 /* Use global offset table entry as symbol value. */
4494 case R_X86_64_GOTPLT64:
553d1284 4495 /* This is obsolete and treated the the same as GOT64. */
6de2ae4a 4496 base_got = htab->elf.sgot;
7b81dfbb 4497
6de2ae4a 4498 if (htab->elf.sgot == NULL)
c434dee6 4499 abort ();
053579d7 4500
9e9821dd 4501 relative_reloc = FALSE;
51e0a107 4502 if (h != NULL)
70256ad8 4503 {
b34976b6 4504 bfd_boolean dyn;
c434dee6
AJ		 4505
4506 off = h->got.offset;
7b81dfbb 4507 if (h->needs_plt
eed180f8 4508 && h->plt.offset != (bfd_vma)-1
7b81dfbb
AJ		 4509 && off == (bfd_vma)-1)
4510 {
4511 /* We can't use h->got.offset here to save
4512 state, or even just remember the offset, as
4513 finish_dynamic_symbol would use that as offset into
4514 .got. */
38b12349
L		 4515 bfd_vma plt_index = (h->plt.offset / plt_entry_size
4516 - htab->plt.has_plt0);
7b81dfbb 4517 off = (plt_index + 3) * GOT_ENTRY_SIZE;
6de2ae4a 4518 base_got = htab->elf.sgotplt;
7b81dfbb
AJ		 4519 }
4520
c434dee6 4521 dyn = htab->elf.dynamic_sections_created;
51e0a107 4522
0e1862bb
L		 4523 if (! WILL_CALL_FINISH_DYNAMIC_SYMBOL (dyn, bfd_link_pic (info), h)
4524 || (bfd_link_pic (info)
27482721 4525 && SYMBOL_REFERENCES_LOCAL (info, h))
4bc6e03a
AJ		 4526 || (ELF_ST_VISIBILITY (h->other)
4527 && h->root.type == bfd_link_hash_undefweak))
51e0a107
JH		 4528 {
4529 /* This is actually a static link, or it is a -Bsymbolic
4530 link and the symbol is defined locally, or the symbol
407443a3 4531 was forced to be local because of a version file. We
51e0a107
JH		 4532 must initialize this entry in the global offset table.
4533 Since the offset must always be a multiple of 8, we
4534 use the least significant bit to record whether we
4535 have initialized it already.
4536
4537 When doing a dynamic link, we create a .rela.got
407443a3
AJ		 4538 relocation entry to initialize the value. This is
4539 done in the finish_dynamic_symbol routine. */
51e0a107
JH		 4540 if ((off & 1) != 0)
4541 off &= ~1;
4542 else
4543 {
4544 bfd_put_64 (output_bfd, relocation,
7b81dfbb
AJ		 4545 base_got->contents + off);
4546 /* Note that this is harmless for the GOTPLT64 case,
eed180f8 4547 as -1 | 1 still is -1. */
51e0a107 4548 h->got.offset |= 1;
9e9821dd
L		 4549
4550 if (h->dynindx == -1
4551 && !h->forced_local
4552 && h->root.type != bfd_link_hash_undefweak
4553 && bfd_link_pic (info))
4554 {
4555 /* If this symbol isn't dynamic in PIC,
4556 generate R_X86_64_RELATIVE here. */
4557 eh->no_finish_dynamic_symbol = 1;
4558 relative_reloc = TRUE;
4559 }
51e0a107
JH		 4560 }
4561 }
053579d7 4562 else
b34976b6 4563 unresolved_reloc = FALSE;
70256ad8 4564 }
51e0a107
JH		 4565 else
4566 {
c434dee6
AJ		 4567 if (local_got_offsets == NULL)
4568 abort ();
51e0a107
JH		 4569
4570 off = local_got_offsets[r_symndx];
4571
4572 /* The offset must always be a multiple of 8. We use
407443a3
AJ		 4573 the least significant bit to record whether we have
4574 already generated the necessary reloc. */
51e0a107
JH		 4575 if ((off & 1) != 0)
4576 off &= ~1;
4577 else
4578 {
c434dee6 4579 bfd_put_64 (output_bfd, relocation,
7b81dfbb 4580 base_got->contents + off);
9e9821dd 4581 local_got_offsets[r_symndx] |= 1;
51e0a107 4582
0e1862bb 4583 if (bfd_link_pic (info))
9e9821dd 4584 relative_reloc = TRUE;
51e0a107 4585 }
51e0a107 4586 }
6a2bda3f 4587
9e9821dd
L		 4588 if (relative_reloc)
4589 {
4590 asection *s;
4591 Elf_Internal_Rela outrel;
4592
4593 /* We need to generate a R_X86_64_RELATIVE reloc
4594 for the dynamic linker. */
4595 s = htab->elf.srelgot;
4596 if (s == NULL)
4597 abort ();
4598
4599 outrel.r_offset = (base_got->output_section->vma
4600 + base_got->output_offset
4601 + off);
4602 outrel.r_info = htab->r_info (0, R_X86_64_RELATIVE);
4603 outrel.r_addend = relocation;
4604 elf_append_rela (output_bfd, s, &outrel);
4605 }
4606
c434dee6
AJ		 4607 if (off >= (bfd_vma) -2)
4608 abort ();
4609
7b81dfbb
AJ		 4610 relocation = base_got->output_section->vma
4611 + base_got->output_offset + off;
56ceb5b5
L		 4612 if (r_type != R_X86_64_GOTPCREL
4613 && r_type != R_X86_64_GOTPCRELX
4614 && r_type != R_X86_64_REX_GOTPCRELX
4615 && r_type != R_X86_64_GOTPCREL64)
6de2ae4a
L		 4616 relocation -= htab->elf.sgotplt->output_section->vma
4617 - htab->elf.sgotplt->output_offset;
c434dee6 4618
70256ad8
AJ		 4619 break;
4620
d6ab8113
JB		 4621 case R_X86_64_GOTOFF64:
4622 /* Relocation is relative to the start of the global offset
4623 table. */
4624
3d949995
L		 4625 /* Check to make sure it isn't a protected function or data
4626 symbol for shared library since it may not be local when
e3c0e327
L		 4627 used as function address or with copy relocation. We also
4628 need to make sure that a symbol is referenced locally. */
0e1862bb 4629 if (bfd_link_pic (info) && h)
d6ab8113 4630 {
e3c0e327
L		 4631 if (!h->def_regular)
4632 {
4633 const char *v;
4634
4635 switch (ELF_ST_VISIBILITY (h->other))
4636 {
4637 case STV_HIDDEN:
4638 v = _("hidden symbol");
4639 break;
4640 case STV_INTERNAL:
4641 v = _("internal symbol");
4642 break;
4643 case STV_PROTECTED:
4644 v = _("protected symbol");
4645 break;
4646 default:
4647 v = _("symbol");
4648 break;
4649 }
4650
4eca0228 4651 _bfd_error_handler
695344c0 4652 /* xgettext:c-format */
63a5468a
AM		 4653 (_("%B: relocation R_X86_64_GOTOFF64 against undefined %s"
4654 " `%s' can not be used when making a shared object"),
e3c0e327
L		 4655 input_bfd, v, h->root.root.string);
4656 bfd_set_error (bfd_error_bad_value);
4657 return FALSE;
4658 }
0e1862bb 4659 else if (!bfd_link_executable (info)
e3c0e327
L		 4660 && !SYMBOL_REFERENCES_LOCAL (info, h)
4661 && (h->type == STT_FUNC
4662 || h->type == STT_OBJECT)
4663 && ELF_ST_VISIBILITY (h->other) == STV_PROTECTED)
4664 {
4eca0228 4665 _bfd_error_handler
695344c0 4666 /* xgettext:c-format */
63a5468a
AM		 4667 (_("%B: relocation R_X86_64_GOTOFF64 against protected %s"
4668 " `%s' can not be used when making a shared object"),
e3c0e327
L		 4669 input_bfd,
4670 h->type == STT_FUNC ? "function" : "data",
4671 h->root.root.string);
4672 bfd_set_error (bfd_error_bad_value);
d6ab8113 4673 return FALSE;
e3c0e327 4674 }
d6ab8113
JB		 4675 }
4676
4677 /* Note that sgot is not involved in this
4678 calculation. We always want the start of .got.plt. If we
4679 defined _GLOBAL_OFFSET_TABLE_ in a different way, as is
4680 permitted by the ABI, we might have to change this
4681 calculation. */
6de2ae4a
L		 4682 relocation -= htab->elf.sgotplt->output_section->vma
4683 + htab->elf.sgotplt->output_offset;
d6ab8113
JB		 4684 break;
4685
4686 case R_X86_64_GOTPC32:
7b81dfbb 4687 case R_X86_64_GOTPC64:
d6ab8113 4688 /* Use global offset table as symbol value. */
6de2ae4a
L		 4689 relocation = htab->elf.sgotplt->output_section->vma
4690 + htab->elf.sgotplt->output_offset;
d6ab8113
JB		 4691 unresolved_reloc = FALSE;
4692 break;
7b81dfbb
AJ		 4693
4694 case R_X86_64_PLTOFF64:
4695 /* Relocation is PLT entry relative to GOT. For local
4696 symbols it's the symbol itself relative to GOT. */
eed180f8 4697 if (h != NULL
7b81dfbb 4698 /* See PLT32 handling. */
9d734efa
L		 4699 && (h->plt.offset != (bfd_vma) -1
4700 || eh->plt_got.offset != (bfd_vma) -1)
6de2ae4a 4701 && htab->elf.splt != NULL)
7b81dfbb 4702 {
9d734efa
L		 4703 if (eh->plt_got.offset != (bfd_vma) -1)
4704 {
4705 /* Use the GOT PLT. */
4706 resolved_plt = htab->plt_got;
4707 plt_offset = eh->plt_got.offset;
4708 }
f2c29a16 4709 else if (htab->plt_second != NULL)
0ff2b86e 4710 {
f2c29a16
L		 4711 resolved_plt = htab->plt_second;
4712 plt_offset = eh->plt_second.offset;
0ff2b86e
L		 4713 }
4714 else
4715 {
4716 resolved_plt = htab->elf.splt;
4717 plt_offset = h->plt.offset;
4718 }
4719
4720 relocation = (resolved_plt->output_section->vma
4721 + resolved_plt->output_offset
4722 + plt_offset);
7b81dfbb
AJ		 4723 unresolved_reloc = FALSE;
4724 }
4725
6de2ae4a
L		 4726 relocation -= htab->elf.sgotplt->output_section->vma
4727 + htab->elf.sgotplt->output_offset;
7b81dfbb 4728 break;
d6ab8113 4729
70256ad8 4730 case R_X86_64_PLT32:
c3320543 4731 case R_X86_64_PLT32_BND:
70256ad8
AJ		 4732 /* Relocation is to the entry for this symbol in the
4733 procedure linkage table. */
4734
4735 /* Resolve a PLT32 reloc against a local symbol directly,
407443a3 4736 without using the procedure linkage table. */
70256ad8
AJ		 4737 if (h == NULL)
4738 break;
4739
dd7e64d4
L		 4740 if ((h->plt.offset == (bfd_vma) -1
4741 && eh->plt_got.offset == (bfd_vma) -1)
6de2ae4a 4742 || htab->elf.splt == NULL)
70256ad8
AJ		 4743 {
4744 /* We didn't make a PLT entry for this symbol. This
407443a3
AJ		 4745 happens when statically linking PIC code, or when
4746 using -Bsymbolic. */
70256ad8
AJ		 4747 break;
4748 }
4749
dd7e64d4 4750 if (h->plt.offset != (bfd_vma) -1)
0ff2b86e 4751 {
f2c29a16 4752 if (htab->plt_second != NULL)
dd7e64d4 4753 {
f2c29a16
L		 4754 resolved_plt = htab->plt_second;
4755 plt_offset = eh->plt_second.offset;
dd7e64d4
L		 4756 }
4757 else
4758 {
4759 resolved_plt = htab->elf.splt;
4760 plt_offset = h->plt.offset;
4761 }
0ff2b86e
L		 4762 }
4763 else
4764 {
dd7e64d4
L		 4765 /* Use the GOT PLT. */
4766 resolved_plt = htab->plt_got;
4767 plt_offset = eh->plt_got.offset;
0ff2b86e
L		 4768 }
4769
4770 relocation = (resolved_plt->output_section->vma
4771 + resolved_plt->output_offset
4772 + plt_offset);
b34976b6 4773 unresolved_reloc = FALSE;
70256ad8
AJ		 4774 break;
4775
1788fc08
L		 4776 case R_X86_64_SIZE32:
4777 case R_X86_64_SIZE64:
1788fc08
L		 4778 /* Set to symbol size. */
4779 relocation = st_size;
4780 goto direct;
4781
fd8ab9e5
AJ		 4782 case R_X86_64_PC8:
4783 case R_X86_64_PC16:
4784 case R_X86_64_PC32:
c3320543 4785 case R_X86_64_PC32_BND:
6333bc0d 4786 /* Don't complain about -fPIC if the symbol is undefined when
aec6b87e
L		 4787 building executable unless it is unresolved weak symbol. */
4788 if ((input_section->flags & SEC_ALLOC) != 0
90f487df 4789 && (input_section->flags & SEC_READONLY) != 0
6333bc0d 4790 && h != NULL
aec6b87e
L		 4791 && ((bfd_link_executable (info)
4792 && h->root.type == bfd_link_hash_undefweak
4793 && !resolved_to_zero)
4794 || (bfd_link_pic (info)
4795 && !(bfd_link_pie (info)
4796 && h->root.type == bfd_link_hash_undefined))))
6610a52d 4797 {
41bed6dd
L		 4798 bfd_boolean fail = FALSE;
4799 bfd_boolean branch
c3320543
L		 4800 = ((r_type == R_X86_64_PC32
4801 || r_type == R_X86_64_PC32_BND)
41bed6dd
L		 4802 && is_32bit_relative_branch (contents, rel->r_offset));
4803
4804 if (SYMBOL_REFERENCES_LOCAL (info, h))
4805 {
4806 /* Symbol is referenced locally. Make sure it is
4807 defined locally or for a branch. */
8170f769
L		 4808 fail = (!(h->def_regular || ELF_COMMON_DEF_P (h))
4809 && !branch);
41bed6dd 4810 }
aec6b87e 4811 else if (!(bfd_link_pie (info)
bc696fd5 4812 && (h->needs_copy || eh->needs_copy)))
41bed6dd 4813 {
9a926d55
L		 4814 /* Symbol doesn't need copy reloc and isn't referenced
4815 locally. We only allow branch to symbol with
4816 non-default visibility. */
41bed6dd
L		 4817 fail = (!branch
4818 || ELF_ST_VISIBILITY (h->other) == STV_DEFAULT);
4819 }
4820
4821 if (fail)
338c190a
L		 4822 return elf_x86_64_need_pic (input_bfd, input_section,
4823 h, NULL, NULL, howto);
6610a52d
L		 4824 }
4825 /* Fall through. */
4826
70256ad8
AJ		 4827 case R_X86_64_8:
4828 case R_X86_64_16:
4829 case R_X86_64_32:
d6ab8113 4830 case R_X86_64_PC64:
6b3db546 4831 case R_X86_64_64:
80643fbc 4832 /* FIXME: The ABI says the linker should make sure the value is
407443a3 4833 the same when it's zeroextended to 64 bit. */
c434dee6 4834
1788fc08 4835direct:
b1e24c02 4836 if ((input_section->flags & SEC_ALLOC) == 0)
c434dee6
AJ		 4837 break;
4838
9a926d55 4839 /* Don't copy a pc-relative relocation into the output file
6333bc0d 4840 if the symbol needs copy reloc or the symbol is undefined
04ebc307 4841 when building executable. Copy dynamic function pointer
aec6b87e
L		 4842 relocations. Don't generate dynamic relocations against
4843 resolved undefined weak symbols in PIE. */
0e1862bb 4844 if ((bfd_link_pic (info)
aec6b87e 4845 && !(bfd_link_pie (info)
fd9edc90 4846 && h != NULL
6333bc0d
L		 4847 && (h->needs_copy
4848 || eh->needs_copy
4849 || h->root.type == bfd_link_hash_undefined)
d8457a04
L		 4850 && (IS_X86_64_PCREL_TYPE (r_type)
4851 || r_type == R_X86_64_SIZE32
4852 || r_type == R_X86_64_SIZE64))
4bc6e03a 4853 && (h == NULL
aec6b87e
L		 4854 || ((ELF_ST_VISIBILITY (h->other) == STV_DEFAULT
4855 && !resolved_to_zero)
4856 || h->root.type != bfd_link_hash_undefweak))
1788fc08
L		 4857 && ((! IS_X86_64_PCREL_TYPE (r_type)
4858 && r_type != R_X86_64_SIZE32
4859 && r_type != R_X86_64_SIZE64)
d8045f23 4860 || ! SYMBOL_CALLS_LOCAL (info, h)))
d40d037c 4861 || (ELIMINATE_COPY_RELOCS
0e1862bb 4862 && !bfd_link_pic (info)
c434dee6
AJ		 4863 && h != NULL
4864 && h->dynindx != -1
aec6b87e
L		 4865 && (!h->non_got_ref
4866 || eh->func_pointer_refcount > 0
4867 || (h->root.type == bfd_link_hash_undefweak
4868 && !resolved_to_zero))
bae420ef
L		 4869 && ((h->def_dynamic && !h->def_regular)
4870 /* Undefined weak symbol is bound locally when
4871 PIC is false. */
0f88be7a 4872 || h->root.type == bfd_link_hash_undefined)))
70256ad8
AJ		 4873 {
4874 Elf_Internal_Rela outrel;
b34976b6 4875 bfd_boolean skip, relocate;
c434dee6 4876 asection *sreloc;
70256ad8
AJ		 4877
4878 /* When generating a shared object, these relocations
4879 are copied into the output file to be resolved at run
407443a3 4880 time. */
b34976b6
AM		 4881 skip = FALSE;
4882 relocate = FALSE;
70256ad8 4883
c629eae0
JJ		 4884 outrel.r_offset =
4885 _bfd_elf_section_offset (output_bfd, info, input_section,
c434dee6 4886 rel->r_offset);
c629eae0 4887 if (outrel.r_offset == (bfd_vma) -1)
b34976b6 4888 skip = TRUE;
0fb19cbc 4889 else if (outrel.r_offset == (bfd_vma) -2)
b34976b6 4890 skip = TRUE, relocate = TRUE;
70256ad8
AJ		 4891
4892 outrel.r_offset += (input_section->output_section->vma
4893 + input_section->output_offset);
4894
4895 if (skip)
0bb2d96a 4896 memset (&outrel, 0, sizeof outrel);
c434dee6 4897
fd8ab9e5
AJ		 4898 /* h->dynindx may be -1 if this symbol was marked to
4899 become local. */
4900 else if (h != NULL
c434dee6 4901 && h->dynindx != -1
d8045f23 4902 && (IS_X86_64_PCREL_TYPE (r_type)
4e0c91e4
L		 4903 || !(bfd_link_executable (info)
4904 || SYMBOLIC_BIND (info, h))
d8045f23 4905 || ! h->def_regular))
70256ad8 4906 {
351f65ca 4907 outrel.r_info = htab->r_info (h->dynindx, r_type);
c434dee6 4908 outrel.r_addend = rel->r_addend;
70256ad8
AJ		 4909 }
4910 else
4911 {
4c10bbaa
L		 4912 /* This symbol is local, or marked to become local.
4913 When relocation overflow check is disabled, we
4914 convert R_X86_64_32 to dynamic R_X86_64_RELATIVE. */
4915 if (r_type == htab->pointer_r_type
4916 || (r_type == R_X86_64_32
4917 && info->no_reloc_overflow_check))
607c0e09 4918 {
b34976b6 4919 relocate = TRUE;
351f65ca 4920 outrel.r_info = htab->r_info (0, R_X86_64_RELATIVE);
607c0e09
AS		 4921 outrel.r_addend = relocation + rel->r_addend;
4922 }
64d25c44
L		 4923 else if (r_type == R_X86_64_64
4924 && !ABI_64_P (output_bfd))
4925 {
4926 relocate = TRUE;
4927 outrel.r_info = htab->r_info (0,
4928 R_X86_64_RELATIVE64);
4929 outrel.r_addend = relocation + rel->r_addend;
8cf0d2dd
L		 4930 /* Check addend overflow. */
4931 if ((outrel.r_addend & 0x80000000)
4932 != (rel->r_addend & 0x80000000))
4933 {
4934 const char *name;
268a8d3a 4935 int addend = rel->r_addend;
8cf0d2dd
L		 4936 if (h && h->root.root.string)
4937 name = h->root.root.string;
4938 else
4939 name = bfd_elf_sym_name (input_bfd, symtab_hdr,
4940 sym, NULL);
6f2c9068 4941 if (addend < 0)
4eca0228 4942 _bfd_error_handler
695344c0 4943 /* xgettext:c-format */
268a8d3a 4944 (_("%B: addend -0x%x in relocation %s against "
6f2c9068
L		 4945 "symbol `%s' at 0x%lx in section `%A' is "
4946 "out of range"),
c08bb8dd
AM		 4947 input_bfd, addend, howto->name, name,
4948 (unsigned long) rel->r_offset, input_section);
6f2c9068 4949 else
4eca0228 4950 _bfd_error_handler
695344c0 4951 /* xgettext:c-format */
268a8d3a 4952 (_("%B: addend 0x%x in relocation %s against "
6f2c9068
L		 4953 "symbol `%s' at 0x%lx in section `%A' is "
4954 "out of range"),
c08bb8dd
AM		 4955 input_bfd, addend, howto->name, name,
4956 (unsigned long) rel->r_offset, input_section);
8cf0d2dd
L		 4957 bfd_set_error (bfd_error_bad_value);
4958 return FALSE;
4959 }
64d25c44 4960 }
607c0e09
AS		 4961 else
4962 {
4963 long sindx;
4964
8517fae7 4965 if (bfd_is_abs_section (sec))
607c0e09
AS		 4966 sindx = 0;
4967 else if (sec == NULL || sec->owner == NULL)
4968 {
4969 bfd_set_error (bfd_error_bad_value);
b34976b6 4970 return FALSE;
607c0e09
AS		 4971 }
4972 else
4973 {
4974 asection *osec;
4975
74541ad4
AM		 4976 /* We are turning this relocation into one
4977 against a section symbol. It would be
4978 proper to subtract the symbol's value,
4979 osec->vma, from the emitted reloc addend,
4980 but ld.so expects buggy relocs. */
607c0e09
AS		 4981 osec = sec->output_section;
4982 sindx = elf_section_data (osec)->dynindx;
74541ad4
AM		 4983 if (sindx == 0)
4984 {
4985 asection *oi = htab->elf.text_index_section;
4986 sindx = elf_section_data (oi)->dynindx;
4987 }
4988 BFD_ASSERT (sindx != 0);
607c0e09
AS		 4989 }
4990
351f65ca 4991 outrel.r_info = htab->r_info (sindx, r_type);
607c0e09
AS		 4992 outrel.r_addend = relocation + rel->r_addend;
4993 }
70256ad8
AJ		 4994 }
4995
cbe950e9 4996 sreloc = elf_section_data (input_section)->sreloc;
d8045f23 4997
62d78908
L		 4998 if (sreloc == NULL || sreloc->contents == NULL)
4999 {
5000 r = bfd_reloc_notsupported;
5001 goto check_relocation_error;
5002 }
c434dee6 5003
351f65ca 5004 elf_append_rela (output_bfd, sreloc, &outrel);
70256ad8
AJ		 5005
5006 /* If this reloc is against an external symbol, we do
5007 not want to fiddle with the addend. Otherwise, we
5008 need to include the symbol value so that it becomes
5009 an addend for the dynamic reloc. */
0f88be7a 5010 if (! relocate)
70256ad8
AJ		 5011 continue;
5012 }
5013
5014 break;
5015
bffbf940 5016 case R_X86_64_TLSGD:
67a4f2b7
AO		 5017 case R_X86_64_GOTPC32_TLSDESC:
5018 case R_X86_64_TLSDESC_CALL:
bffbf940 5019 case R_X86_64_GOTTPOFF:
bffbf940
JJ		 5020 tls_type = GOT_UNKNOWN;
5021 if (h == NULL && local_got_offsets)
351f65ca 5022 tls_type = elf_x86_64_local_got_tls_type (input_bfd) [r_symndx];
bffbf940 5023 else if (h != NULL)
351f65ca 5024 tls_type = elf_x86_64_hash_entry (h)->tls_type;
142411ca 5025
351f65ca
L		 5026 if (! elf_x86_64_tls_transition (info, input_bfd,
5027 input_section, contents,
5028 symtab_hdr, sym_hashes,
5029 &r_type, tls_type, rel,
bedfd056 5030 relend, h, r_symndx, TRUE))
534a31f6 5031 return FALSE;
bffbf940
JJ		 5032
5033 if (r_type == R_X86_64_TPOFF32)
5034 {
142411ca
L		 5035 bfd_vma roff = rel->r_offset;
5036
bffbf940 5037 BFD_ASSERT (! unresolved_reloc);
142411ca 5038
351f65ca 5039 if (ELF32_R_TYPE (rel->r_info) == R_X86_64_TLSGD)
bffbf940 5040 {
52bc799a 5041 /* GD->LE transition. For 64bit, change
e2cbcd91
L		 5042 .byte 0x66; leaq foo@tlsgd(%rip), %rdi
5043 .word 0x6666; rex64; call __tls_get_addr@PLT
5044 or
5045 .byte 0x66; leaq foo@tlsgd(%rip), %rdi
5046 .byte 0x66; rex64
5047 call *__tls_get_addr@GOTPCREL(%rip)
5048 which may be converted to
5049 addr32 call __tls_get_addr
52bc799a 5050 into:
e2cbcd91
L		 5051 movq %fs:0, %rax
5052 leaq foo@tpoff(%rax), %rax
52bc799a 5053 For 32bit, change
e2cbcd91
L		 5054 leaq foo@tlsgd(%rip), %rdi
5055 .word 0x6666; rex64; call __tls_get_addr@PLT
5056 or
5057 leaq foo@tlsgd(%rip), %rdi
5058 .byte 0x66; rex64
5059 call *__tls_get_addr@GOTPCREL(%rip)
5060 which may be converted to
5061 addr32 call __tls_get_addr
52bc799a 5062 into:
e2cbcd91
L		 5063 movl %fs:0, %eax
5064 leaq foo@tpoff(%rax), %rax
5c98a14e 5065 For largepic, change:
e2cbcd91
L		 5066 leaq foo@tlsgd(%rip), %rdi
5067 movabsq $__tls_get_addr@pltoff, %rax
5068 addq %r15, %rax
5069 call *%rax
5c98a14e 5070 into:
e2cbcd91
L		 5071 movq %fs:0, %rax
5072 leaq foo@tpoff(%rax), %rax
5073 nopw 0x0(%rax,%rax,1) */
5c98a14e 5074 int largepic = 0;
e2cbcd91 5075 if (ABI_64_P (output_bfd))
5c98a14e 5076 {
e2cbcd91
L		 5077 if (contents[roff + 5] == 0xb8)
5078 {
5079 memcpy (contents + roff - 3,
5080 "\x64\x48\x8b\x04\x25\0\0\0\0\x48\x8d\x80"
5081 "\0\0\0\0\x66\x0f\x1f\x44\0", 22);
5082 largepic = 1;
5083 }
5084 else
5085 memcpy (contents + roff - 4,
5086 "\x64\x48\x8b\x04\x25\0\0\0\0\x48\x8d\x80\0\0\0",
5087 16);
5c98a14e 5088 }
52bc799a
L		 5089 else
5090 memcpy (contents + roff - 3,
5091 "\x64\x8b\x04\x25\0\0\0\0\x48\x8d\x80\0\0\0",
5092 15);
eb4ff4d6 5093 bfd_put_32 (output_bfd,
351f65ca 5094 elf_x86_64_tpoff (info, relocation),
5c98a14e 5095 contents + roff + 8 + largepic);
e2cbcd91
L		 5096 /* Skip R_X86_64_PC32, R_X86_64_PLT32,
5097 R_X86_64_GOTPCRELX and R_X86_64_PLTOFF64. */
bffbf940 5098 rel++;
60f2e42e 5099 wrel++;
bffbf940
JJ		 5100 continue;
5101 }
351f65ca 5102 else if (ELF32_R_TYPE (rel->r_info) == R_X86_64_GOTPC32_TLSDESC)
67a4f2b7
AO		 5103 {
5104 /* GDesc -> LE transition.
5105 It's originally something like:
5106 leaq x@tlsdesc(%rip), %rax
5107
5108 Change it to:
c9736ba0 5109 movl $x@tpoff, %rax. */
67a4f2b7 5110
c9736ba0 5111 unsigned int val, type;
67a4f2b7 5112
67a4f2b7 5113 type = bfd_get_8 (input_bfd, contents + roff - 3);
67a4f2b7 5114 val = bfd_get_8 (input_bfd, contents + roff - 1);
67a4f2b7
AO		 5115 bfd_put_8 (output_bfd, 0x48 | ((type >> 2) & 1),
5116 contents + roff - 3);
5117 bfd_put_8 (output_bfd, 0xc7, contents + roff - 2);
5118 bfd_put_8 (output_bfd, 0xc0 | ((val >> 3) & 7),
5119 contents + roff - 1);
eb4ff4d6 5120 bfd_put_32 (output_bfd,
351f65ca 5121 elf_x86_64_tpoff (info, relocation),
67a4f2b7
AO		 5122 contents + roff);
5123 continue;
5124 }
351f65ca 5125 else if (ELF32_R_TYPE (rel->r_info) == R_X86_64_TLSDESC_CALL)
67a4f2b7
AO		 5126 {
5127 /* GDesc -> LE transition.
5128 It's originally:
5129 call *(%rax)
5130 Turn it into:
142411ca 5131 xchg %ax,%ax. */
10efb593 5132 bfd_put_8 (output_bfd, 0x66, contents + roff);
67a4f2b7
AO		 5133 bfd_put_8 (output_bfd, 0x90, contents + roff + 1);
5134 continue;
5135 }
351f65ca 5136 else if (ELF32_R_TYPE (rel->r_info) == R_X86_64_GOTTPOFF)
bffbf940 5137 {
bffbf940 5138 /* IE->LE transition:
cf61b747 5139 For 64bit, originally it can be one of:
bffbf940
JJ		 5140 movq foo@gottpoff(%rip), %reg
5141 addq foo@gottpoff(%rip), %reg
5142 We change it into:
5143 movq $foo, %reg
5144 leaq foo(%reg), %reg
cf61b747
L		 5145 addq $foo, %reg.
5146 For 32bit, originally it can be one of:
5147 movq foo@gottpoff(%rip), %reg
5148 addl foo@gottpoff(%rip), %reg
5149 We change it into:
5150 movq $foo, %reg
5151 leal foo(%reg), %reg
5152 addl $foo, %reg. */
142411ca
L		 5153
5154 unsigned int val, type, reg;
5155
cf61b747
L		 5156 if (roff >= 3)
5157 val = bfd_get_8 (input_bfd, contents + roff - 3);
5158 else
5159 val = 0;
142411ca
L		 5160 type = bfd_get_8 (input_bfd, contents + roff - 2);
5161 reg = bfd_get_8 (input_bfd, contents + roff - 1);
bffbf940 5162 reg >>= 3;
bffbf940
JJ		 5163 if (type == 0x8b)
5164 {
5165 /* movq */
5166 if (val == 0x4c)
5167 bfd_put_8 (output_bfd, 0x49,
142411ca 5168 contents + roff - 3);
4a4c5f25
L		 5169 else if (!ABI_64_P (output_bfd) && val == 0x44)
5170 bfd_put_8 (output_bfd, 0x41,
5171 contents + roff - 3);
bffbf940 5172 bfd_put_8 (output_bfd, 0xc7,
142411ca 5173 contents + roff - 2);
bffbf940 5174 bfd_put_8 (output_bfd, 0xc0 | reg,
142411ca 5175 contents + roff - 1);
bffbf940
JJ		 5176 }
5177 else if (reg == 4)
5178 {
cf61b747
L		 5179 /* addq/addl -> addq/addl - addressing with %rsp/%r12
5180 is special */
bffbf940
JJ		 5181 if (val == 0x4c)
5182 bfd_put_8 (output_bfd, 0x49,
142411ca 5183 contents + roff - 3);
4a4c5f25
L		 5184 else if (!ABI_64_P (output_bfd) && val == 0x44)
5185 bfd_put_8 (output_bfd, 0x41,
5186 contents + roff - 3);
bffbf940 5187 bfd_put_8 (output_bfd, 0x81,
142411ca 5188 contents + roff - 2);
bffbf940 5189 bfd_put_8 (output_bfd, 0xc0 | reg,
142411ca 5190 contents + roff - 1);
bffbf940
JJ		 5191 }
5192 else
5193 {
cf61b747 5194 /* addq/addl -> leaq/leal */
bffbf940
JJ		 5195 if (val == 0x4c)
5196 bfd_put_8 (output_bfd, 0x4d,
142411ca 5197 contents + roff - 3);
4a4c5f25
L		 5198 else if (!ABI_64_P (output_bfd) && val == 0x44)
5199 bfd_put_8 (output_bfd, 0x45,
5200 contents + roff - 3);
bffbf940 5201 bfd_put_8 (output_bfd, 0x8d,
142411ca 5202 contents + roff - 2);
bffbf940 5203 bfd_put_8 (output_bfd, 0x80 | reg | (reg << 3),
142411ca 5204 contents + roff - 1);
bffbf940 5205 }
eb4ff4d6 5206 bfd_put_32 (output_bfd,
351f65ca 5207 elf_x86_64_tpoff (info, relocation),
142411ca 5208 contents + roff);
bffbf940
JJ		 5209 continue;
5210 }
142411ca
L		 5211 else
5212 BFD_ASSERT (FALSE);
bffbf940
JJ		 5213 }
5214
6de2ae4a 5215 if (htab->elf.sgot == NULL)
bffbf940
JJ		 5216 abort ();
5217
5218 if (h != NULL)
67a4f2b7
AO		 5219 {
5220 off = h->got.offset;
351f65ca 5221 offplt = elf_x86_64_hash_entry (h)->tlsdesc_got;
67a4f2b7 5222 }
bffbf940
JJ		 5223 else
5224 {
5225 if (local_got_offsets == NULL)
5226 abort ();
5227
5228 off = local_got_offsets[r_symndx];
67a4f2b7 5229 offplt = local_tlsdesc_gotents[r_symndx];
bffbf940
JJ		 5230 }
5231
5232 if ((off & 1) != 0)
5233 off &= ~1;
26e41594 5234 else
bffbf940
JJ		 5235 {
5236 Elf_Internal_Rela outrel;
bffbf940 5237 int dr_type, indx;
67a4f2b7 5238 asection *sreloc;
bffbf940 5239
6de2ae4a 5240 if (htab->elf.srelgot == NULL)
bffbf940
JJ		 5241 abort ();
5242
67a4f2b7
AO		 5243 indx = h && h->dynindx != -1 ? h->dynindx : 0;
5244
5245 if (GOT_TLS_GDESC_P (tls_type))
5246 {
351f65ca 5247 outrel.r_info = htab->r_info (indx, R_X86_64_TLSDESC);
67a4f2b7 5248 BFD_ASSERT (htab->sgotplt_jump_table_size + offplt
6de2ae4a
L		 5249 + 2 * GOT_ENTRY_SIZE <= htab->elf.sgotplt->size);
5250 outrel.r_offset = (htab->elf.sgotplt->output_section->vma
5251 + htab->elf.sgotplt->output_offset
67a4f2b7
AO		 5252 + offplt
5253 + htab->sgotplt_jump_table_size);
6de2ae4a 5254 sreloc = htab->elf.srelplt;
67a4f2b7 5255 if (indx == 0)
351f65ca 5256 outrel.r_addend = relocation - elf_x86_64_dtpoff_base (info);
67a4f2b7
AO		 5257 else
5258 outrel.r_addend = 0;
351f65ca 5259 elf_append_rela (output_bfd, sreloc, &outrel);
67a4f2b7
AO		 5260 }
5261
6de2ae4a 5262 sreloc = htab->elf.srelgot;
67a4f2b7 5263
6de2ae4a
L		 5264 outrel.r_offset = (htab->elf.sgot->output_section->vma
5265 + htab->elf.sgot->output_offset + off);
bffbf940 5266
67a4f2b7 5267 if (GOT_TLS_GD_P (tls_type))
bffbf940 5268 dr_type = R_X86_64_DTPMOD64;
67a4f2b7
AO		 5269 else if (GOT_TLS_GDESC_P (tls_type))
5270 goto dr_done;
bffbf940
JJ		 5271 else
5272 dr_type = R_X86_64_TPOFF64;
5273
6de2ae4a 5274 bfd_put_64 (output_bfd, 0, htab->elf.sgot->contents + off);
bffbf940 5275 outrel.r_addend = 0;
67a4f2b7
AO		 5276 if ((dr_type == R_X86_64_TPOFF64
5277 || dr_type == R_X86_64_TLSDESC) && indx == 0)
351f65ca
L		 5278 outrel.r_addend = relocation - elf_x86_64_dtpoff_base (info);
5279 outrel.r_info = htab->r_info (indx, dr_type);
bffbf940 5280
351f65ca 5281 elf_append_rela (output_bfd, sreloc, &outrel);
bffbf940 5282
67a4f2b7 5283 if (GOT_TLS_GD_P (tls_type))
bffbf940
JJ		 5284 {
5285 if (indx == 0)
5286 {
d40d037c 5287 BFD_ASSERT (! unresolved_reloc);
bffbf940 5288 bfd_put_64 (output_bfd,
351f65ca 5289 relocation - elf_x86_64_dtpoff_base (info),
6de2ae4a 5290 htab->elf.sgot->contents + off + GOT_ENTRY_SIZE);
bffbf940
JJ		 5291 }
5292 else
5293 {
5294 bfd_put_64 (output_bfd, 0,
6de2ae4a 5295 htab->elf.sgot->contents + off + GOT_ENTRY_SIZE);
351f65ca 5296 outrel.r_info = htab->r_info (indx,
bffbf940
JJ		 5297 R_X86_64_DTPOFF64);
5298 outrel.r_offset += GOT_ENTRY_SIZE;
351f65ca 5299 elf_append_rela (output_bfd, sreloc,
464d3bd4 5300 &outrel);
bffbf940
JJ		 5301 }
5302 }
5303
67a4f2b7 5304 dr_done:
bffbf940
JJ		 5305 if (h != NULL)
5306 h->got.offset |= 1;
5307 else
5308 local_got_offsets[r_symndx] |= 1;
5309 }
5310
67a4f2b7
AO		 5311 if (off >= (bfd_vma) -2
5312 && ! GOT_TLS_GDESC_P (tls_type))
bffbf940 5313 abort ();
351f65ca 5314 if (r_type == ELF32_R_TYPE (rel->r_info))
bffbf940 5315 {
67a4f2b7
AO		 5316 if (r_type == R_X86_64_GOTPC32_TLSDESC
5317 || r_type == R_X86_64_TLSDESC_CALL)
6de2ae4a
L		 5318 relocation = htab->elf.sgotplt->output_section->vma
5319 + htab->elf.sgotplt->output_offset
67a4f2b7
AO		 5320 + offplt + htab->sgotplt_jump_table_size;
5321 else
6de2ae4a
L		 5322 relocation = htab->elf.sgot->output_section->vma
5323 + htab->elf.sgot->output_offset + off;
b34976b6 5324 unresolved_reloc = FALSE;
bffbf940 5325 }
142411ca 5326 else
67a4f2b7 5327 {
142411ca 5328 bfd_vma roff = rel->r_offset;
67a4f2b7 5329
351f65ca 5330 if (ELF32_R_TYPE (rel->r_info) == R_X86_64_TLSGD)
142411ca 5331 {
52bc799a 5332 /* GD->IE transition. For 64bit, change
e2cbcd91
L		 5333 .byte 0x66; leaq foo@tlsgd(%rip), %rdi
5334 .word 0x6666; rex64; call __tls_get_addr@PLT
5335 or
5336 .byte 0x66; leaq foo@tlsgd(%rip), %rdi
5337 .byte 0x66; rex64
5338 call *__tls_get_addr@GOTPCREL(%rip
5339 which may be converted to
5340 addr32 call __tls_get_addr
52bc799a 5341 into:
e2cbcd91
L		 5342 movq %fs:0, %rax
5343 addq foo@gottpoff(%rip), %rax
52bc799a 5344 For 32bit, change
e2cbcd91
L		 5345 leaq foo@tlsgd(%rip), %rdi
5346 .word 0x6666; rex64; call __tls_get_addr@PLT
5347 or
5348 leaq foo@tlsgd(%rip), %rdi
5349 .byte 0x66; rex64;
5350 call *__tls_get_addr@GOTPCREL(%rip)
5351 which may be converted to
5352 addr32 call __tls_get_addr
52bc799a 5353 into:
e2cbcd91
L		 5354 movl %fs:0, %eax
5355 addq foo@gottpoff(%rip), %rax
5c98a14e 5356 For largepic, change:
e2cbcd91
L		 5357 leaq foo@tlsgd(%rip), %rdi
5358 movabsq $__tls_get_addr@pltoff, %rax
5359 addq %r15, %rax
5360 call *%rax
5c98a14e 5361 into:
e2cbcd91
L		 5362 movq %fs:0, %rax
5363 addq foo@gottpoff(%rax), %rax
5364 nopw 0x0(%rax,%rax,1) */
5c98a14e 5365 int largepic = 0;
e2cbcd91 5366 if (ABI_64_P (output_bfd))
5c98a14e 5367 {
e2cbcd91
L		 5368 if (contents[roff + 5] == 0xb8)
5369 {
5370 memcpy (contents + roff - 3,
5371 "\x64\x48\x8b\x04\x25\0\0\0\0\x48\x03\x05"
5372 "\0\0\0\0\x66\x0f\x1f\x44\0", 22);
5373 largepic = 1;
5374 }
5375 else
5376 memcpy (contents + roff - 4,
5377 "\x64\x48\x8b\x04\x25\0\0\0\0\x48\x03\x05\0\0\0",
5378 16);
5c98a14e 5379 }
52bc799a
L		 5380 else
5381 memcpy (contents + roff - 3,
5382 "\x64\x8b\x04\x25\0\0\0\0\x48\x03\x05\0\0\0",
5383 15);
142411ca 5384
6de2ae4a
L		 5385 relocation = (htab->elf.sgot->output_section->vma
5386 + htab->elf.sgot->output_offset + off
142411ca 5387 - roff
5c98a14e 5388 - largepic
142411ca
L		 5389 - input_section->output_section->vma
5390 - input_section->output_offset
5391 - 12);
5392 bfd_put_32 (output_bfd, relocation,
5c98a14e
JJ		 5393 contents + roff + 8 + largepic);
5394 /* Skip R_X86_64_PLT32/R_X86_64_PLTOFF64. */
142411ca 5395 rel++;
60f2e42e 5396 wrel++;
142411ca
L		 5397 continue;
5398 }
351f65ca 5399 else if (ELF32_R_TYPE (rel->r_info) == R_X86_64_GOTPC32_TLSDESC)
142411ca
L		 5400 {
5401 /* GDesc -> IE transition.
5402 It's originally something like:
5403 leaq x@tlsdesc(%rip), %rax
67a4f2b7 5404
142411ca 5405 Change it to:
c9736ba0 5406 movq x@gottpoff(%rip), %rax # before xchg %ax,%ax. */
67a4f2b7 5407
142411ca
L		 5408 /* Now modify the instruction as appropriate. To
5409 turn a leaq into a movq in the form we use it, it
5410 suffices to change the second byte from 0x8d to
5411 0x8b. */
5412 bfd_put_8 (output_bfd, 0x8b, contents + roff - 2);
5413
5414 bfd_put_32 (output_bfd,
6de2ae4a
L		 5415 htab->elf.sgot->output_section->vma
5416 + htab->elf.sgot->output_offset + off
142411ca
L		 5417 - rel->r_offset
5418 - input_section->output_section->vma
5419 - input_section->output_offset
5420 - 4,
5421 contents + roff);
5422 continue;
5423 }
351f65ca 5424 else if (ELF32_R_TYPE (rel->r_info) == R_X86_64_TLSDESC_CALL)
142411ca
L		 5425 {
5426 /* GDesc -> IE transition.
5427 It's originally:
5428 call *(%rax)
5429
5430 Change it to:
c9736ba0 5431 xchg %ax, %ax. */
142411ca 5432
142411ca
L		 5433 bfd_put_8 (output_bfd, 0x66, contents + roff);
5434 bfd_put_8 (output_bfd, 0x90, contents + roff + 1);
5435 continue;
5436 }
5437 else
5438 BFD_ASSERT (FALSE);
67a4f2b7 5439 }
bffbf940
JJ		 5440 break;
5441
5442 case R_X86_64_TLSLD:
351f65ca
L		 5443 if (! elf_x86_64_tls_transition (info, input_bfd,
5444 input_section, contents,
5445 symtab_hdr, sym_hashes,
bedfd056
L		 5446 &r_type, GOT_UNKNOWN, rel,
5447 relend, h, r_symndx, TRUE))
142411ca 5448 return FALSE;
a3fadc9a 5449
142411ca
L		 5450 if (r_type != R_X86_64_TLSLD)
5451 {
bffbf940 5452 /* LD->LE transition:
e2cbcd91
L		 5453 leaq foo@tlsld(%rip), %rdi
5454 call __tls_get_addr@PLT
5455 For 64bit, we change it into:
5456 .word 0x6666; .byte 0x66; movq %fs:0, %rax
5457 For 32bit, we change it into:
5458 nopl 0x0(%rax); movl %fs:0, %eax
5459 Or
5460 leaq foo@tlsld(%rip), %rdi;
5461 call *__tls_get_addr@GOTPCREL(%rip)
5462 which may be converted to
5463 addr32 call __tls_get_addr
52bc799a 5464 For 64bit, we change it into:
e2cbcd91 5465 .word 0x6666; .word 0x6666; movq %fs:0, %rax
52bc799a 5466 For 32bit, we change it into:
e2cbcd91 5467 nopw 0x0(%rax); movl %fs:0, %eax
5c98a14e 5468 For largepic, change:
e2cbcd91
L		 5469 leaq foo@tlsgd(%rip), %rdi
5470 movabsq $__tls_get_addr@pltoff, %rax
5471 addq %rbx, %rax
5472 call *%rax
5473 into
5474 data16 data16 data16 nopw %cs:0x0(%rax,%rax,1)
5475 movq %fs:0, %eax */
142411ca
L		 5476
5477 BFD_ASSERT (r_type == R_X86_64_TPOFF32);
e2cbcd91
L		 5478 if (ABI_64_P (output_bfd))
5479 {
5480 if (contents[rel->r_offset + 5] == 0xb8)
5481 memcpy (contents + rel->r_offset - 3,
5482 "\x66\x66\x66\x66\x2e\x0f\x1f\x84\0\0\0\0\0"
5483 "\x64\x48\x8b\x04\x25\0\0\0", 22);
5484 else if (contents[rel->r_offset + 4] == 0xff
5485 || contents[rel->r_offset + 4] == 0x67)
5486 memcpy (contents + rel->r_offset - 3,
5487 "\x66\x66\x66\x66\x64\x48\x8b\x04\x25\0\0\0",
5488 13);
5489 else
5490 memcpy (contents + rel->r_offset - 3,
5491 "\x66\x66\x66\x64\x48\x8b\x04\x25\0\0\0", 12);
5492 }
52bc799a 5493 else
e2cbcd91
L		 5494 {
5495 if (contents[rel->r_offset + 4] == 0xff)
5496 memcpy (contents + rel->r_offset - 3,
5497 "\x66\x0f\x1f\x40\x00\x64\x8b\x04\x25\0\0\0",
5498 13);
5499 else
5500 memcpy (contents + rel->r_offset - 3,
5501 "\x0f\x1f\x40\x00\x64\x8b\x04\x25\0\0\0", 12);
5502 }
5503 /* Skip R_X86_64_PC32, R_X86_64_PLT32, R_X86_64_GOTPCRELX
5504 and R_X86_64_PLTOFF64. */
bffbf940 5505 rel++;
60f2e42e 5506 wrel++;
bffbf940
JJ		 5507 continue;
5508 }
5509
6de2ae4a 5510 if (htab->elf.sgot == NULL)
bffbf940
JJ		 5511 abort ();
5512
5513 off = htab->tls_ld_got.offset;
5514 if (off & 1)
5515 off &= ~1;
5516 else
5517 {
5518 Elf_Internal_Rela outrel;
bffbf940 5519
6de2ae4a 5520 if (htab->elf.srelgot == NULL)
bffbf940
JJ		 5521 abort ();
5522
6de2ae4a
L		 5523 outrel.r_offset = (htab->elf.sgot->output_section->vma
5524 + htab->elf.sgot->output_offset + off);
bffbf940
JJ		 5525
5526 bfd_put_64 (output_bfd, 0,
6de2ae4a 5527 htab->elf.sgot->contents + off);
bffbf940 5528 bfd_put_64 (output_bfd, 0,
6de2ae4a 5529 htab->elf.sgot->contents + off + GOT_ENTRY_SIZE);
351f65ca 5530 outrel.r_info = htab->r_info (0, R_X86_64_DTPMOD64);
bffbf940 5531 outrel.r_addend = 0;
351f65ca 5532 elf_append_rela (output_bfd, htab->elf.srelgot,
464d3bd4 5533 &outrel);
bffbf940
JJ		 5534 htab->tls_ld_got.offset |= 1;
5535 }
6de2ae4a
L		 5536 relocation = htab->elf.sgot->output_section->vma
5537 + htab->elf.sgot->output_offset + off;
b34976b6 5538 unresolved_reloc = FALSE;
bffbf940
JJ		 5539 break;
5540
5541 case R_X86_64_DTPOFF32:
0e1862bb
L		 5542 if (!bfd_link_executable (info)
5543 || (input_section->flags & SEC_CODE) == 0)
351f65ca 5544 relocation -= elf_x86_64_dtpoff_base (info);
bffbf940 5545 else
351f65ca 5546 relocation = elf_x86_64_tpoff (info, relocation);
bffbf940
JJ		 5547 break;
5548
5549 case R_X86_64_TPOFF32:
6769d501 5550 case R_X86_64_TPOFF64:
0e1862bb 5551 BFD_ASSERT (bfd_link_executable (info));
351f65ca 5552 relocation = elf_x86_64_tpoff (info, relocation);
bffbf940
JJ		 5553 break;
5554
a69ed7f7
L		 5555 case R_X86_64_DTPOFF64:
5556 BFD_ASSERT ((input_section->flags & SEC_CODE) == 0);
5557 relocation -= elf_x86_64_dtpoff_base (info);
5558 break;
5559
70256ad8
AJ		 5560 default:
5561 break;
5562 }
8d88c4ca 5563
239e1f3a
AM		 5564 /* Dynamic relocs are not propagated for SEC_DEBUGGING sections
5565 because such sections are not SEC_ALLOC and thus ld.so will
5566 not process them. */
c434dee6 5567 if (unresolved_reloc
239e1f3a 5568 && !((input_section->flags & SEC_DEBUGGING) != 0
1d5316ab
AM		 5569 && h->def_dynamic)
5570 && _bfd_elf_section_offset (output_bfd, info, input_section,
5571 rel->r_offset) != (bfd_vma) -1)
a040981f 5572 {
4eca0228 5573 _bfd_error_handler
695344c0 5574 /* xgettext:c-format */
a040981f
L		 5575 (_("%B(%A+0x%lx): unresolvable %s relocation against symbol `%s'"),
5576 input_bfd,
5577 input_section,
5578 (long) rel->r_offset,
5579 howto->name,
5580 h->root.root.string);
5581 return FALSE;
5582 }
c434dee6 5583
cbe950e9 5584do_relocation:
8d88c4ca 5585 r = _bfd_final_link_relocate (howto, input_bfd, input_section,
c434dee6
AJ		 5586 contents, rel->r_offset,
5587 relocation, rel->r_addend);
8d88c4ca 5588
62d78908 5589check_relocation_error:
8d88c4ca 5590 if (r != bfd_reloc_ok)
8da6118f 5591 {
c434dee6
AJ		 5592 const char *name;
5593
5594 if (h != NULL)
5595 name = h->root.root.string;
5596 else
8da6118f 5597 {
c434dee6
AJ		 5598 name = bfd_elf_string_from_elf_section (input_bfd,
5599 symtab_hdr->sh_link,
5600 sym->st_name);
5601 if (name == NULL)
b34976b6 5602 return FALSE;
c434dee6
AJ		 5603 if (*name == '\0')
5604 name = bfd_section_name (input_bfd, sec);
5605 }
5606
5607 if (r == bfd_reloc_overflow)
1a72702b
AM		 5608 (*info->callbacks->reloc_overflow)
5609 (info, (h ? &h->root : NULL), name, howto->name,
5610 (bfd_vma) 0, input_bfd, input_section, rel->r_offset);
c434dee6
AJ		 5611 else
5612 {
4eca0228 5613 _bfd_error_handler
695344c0 5614 /* xgettext:c-format */
bb95161d 5615 (_("%B(%A+0x%lx): reloc against `%s': error %d"),
d003868e 5616 input_bfd, input_section,
c434dee6 5617 (long) rel->r_offset, name, (int) r);
b34976b6 5618 return FALSE;
8da6118f
KH		 5619 }
5620 }
60f2e42e
L		 5621
5622 if (wrel != rel)
5623 *wrel = *rel;
5624 }
5625
5626 if (wrel != rel)
5627 {
5628 Elf_Internal_Shdr *rel_hdr;
5629 size_t deleted = rel - wrel;
5630
5631 rel_hdr = _bfd_elf_single_rel_hdr (input_section->output_section);
5632 rel_hdr->sh_size -= rel_hdr->sh_entsize * deleted;
5633 if (rel_hdr->sh_size == 0)
5634 {
5635 /* It is too late to remove an empty reloc section. Leave
5636 one NONE reloc.
5637 ??? What is wrong with an empty section??? */
5638 rel_hdr->sh_size = rel_hdr->sh_entsize;
5639 deleted -= 1;
5640 }
5641 rel_hdr = _bfd_elf_single_rel_hdr (input_section);
5642 rel_hdr->sh_size -= rel_hdr->sh_entsize * deleted;
5643 input_section->reloc_count -= deleted;
8d88c4ca 5644 }
70256ad8 5645
b34976b6 5646 return TRUE;
70256ad8
AJ		 5647}
5648
5649/* Finish up dynamic symbol handling. We set the contents of various
5650 dynamic sections here. */
5651
b34976b6 5652static bfd_boolean
351f65ca
L		 5653elf_x86_64_finish_dynamic_symbol (bfd *output_bfd,
5654 struct bfd_link_info *info,
5655 struct elf_link_hash_entry *h,
aec6b87e 5656 Elf_Internal_Sym *sym)
70256ad8 5657{
351f65ca 5658 struct elf_x86_64_link_hash_table *htab;
f2c29a16 5659 bfd_boolean use_plt_second;
dd7e64d4 5660 struct elf_x86_64_link_hash_entry *eh;
aec6b87e 5661 bfd_boolean local_undefweak;
70256ad8 5662
351f65ca 5663 htab = elf_x86_64_hash_table (info);
4dfe6ac6
NC		 5664 if (htab == NULL)
5665 return FALSE;
70256ad8 5666
f2c29a16
L		 5667 /* Use the second PLT section only if there is .plt section. */
5668 use_plt_second = htab->elf.splt != NULL && htab->plt_second != NULL;
0ff2b86e 5669
dd7e64d4 5670 eh = (struct elf_x86_64_link_hash_entry *) h;
9e9821dd
L		 5671 if (eh->no_finish_dynamic_symbol)
5672 abort ();
dd7e64d4 5673
aec6b87e
L		 5674 /* We keep PLT/GOT entries without dynamic PLT/GOT relocations for
5675 resolved undefined weak symbols in executable so that their
5676 references have value 0 at run-time. */
e62b9723
L		 5677 local_undefweak = UNDEFINED_WEAK_RESOLVED_TO_ZERO (info,
5678 eh->has_got_reloc,
5679 eh);
aec6b87e 5680
70256ad8
AJ		 5681 if (h->plt.offset != (bfd_vma) -1)
5682 {
70256ad8 5683 bfd_vma plt_index;
38b12349 5684 bfd_vma got_offset, plt_offset;
70256ad8 5685 Elf_Internal_Rela rela;
947216bf 5686 bfd_byte *loc;
0ff2b86e 5687 asection *plt, *gotplt, *relplt, *resolved_plt;
351f65ca 5688 const struct elf_backend_data *bed;
5974eba6 5689 bfd_vma plt_got_pcrel_offset;
cbe950e9
L		 5690
5691 /* When building a static executable, use .iplt, .igot.plt and
5692 .rela.iplt sections for STT_GNU_IFUNC symbols. */
6de2ae4a 5693 if (htab->elf.splt != NULL)
cbe950e9 5694 {
6de2ae4a
L		 5695 plt = htab->elf.splt;
5696 gotplt = htab->elf.sgotplt;
5697 relplt = htab->elf.srelplt;
cbe950e9
L		 5698 }
5699 else
5700 {
6de2ae4a
L		 5701 plt = htab->elf.iplt;
5702 gotplt = htab->elf.igotplt;
5703 relplt = htab->elf.irelplt;
cbe950e9 5704 }
70256ad8
AJ		 5705
5706 /* This symbol has an entry in the procedure linkage table. Set
407443a3 5707 it up. */
cbe950e9 5708 if ((h->dynindx == -1
aec6b87e 5709 && !local_undefweak
0e1862bb 5710 && !((h->forced_local || bfd_link_executable (info))
cbe950e9
L		 5711 && h->def_regular
5712 && h->type == STT_GNU_IFUNC))
5713 || plt == NULL
5714 || gotplt == NULL
5715 || relplt == NULL)
cec7f46a 5716 abort ();
70256ad8
AJ		 5717
5718 /* Get the index in the procedure linkage table which
5719 corresponds to this symbol. This is the index of this symbol
5720 in all the symbols for which we are making plt entries. The
cbe950e9 5721 first entry in the procedure linkage table is reserved.
6bbec505 5722
cbe950e9 5723 Get the offset into the .got table of the entry that
407443a3 5724 corresponds to this function. Each .got entry is GOT_ENTRY_SIZE
cbe950e9
L		 5725 bytes. The first three are reserved for the dynamic linker.
5726
5727 For static executables, we don't reserve anything. */
5728
6de2ae4a 5729 if (plt == htab->elf.splt)
cbe950e9 5730 {
38b12349
L		 5731 got_offset = (h->plt.offset / htab->plt.plt_entry_size
5732 - htab->plt.has_plt0);
e1f98742 5733 got_offset = (got_offset + 3) * GOT_ENTRY_SIZE;
cbe950e9
L		 5734 }
5735 else
5736 {
38b12349 5737 got_offset = h->plt.offset / htab->plt.plt_entry_size;
e1f98742 5738 got_offset = got_offset * GOT_ENTRY_SIZE;
cbe950e9 5739 }
70256ad8 5740
38b12349
L		 5741 /* Fill in the entry in the procedure linkage table. */
5742 memcpy (plt->contents + h->plt.offset, htab->plt.plt_entry,
5743 htab->plt.plt_entry_size);
f2c29a16 5744 if (use_plt_second)
0ff2b86e 5745 {
f2c29a16 5746 memcpy (htab->plt_second->contents + eh->plt_second.offset,
38b12349
L		 5747 htab->non_lazy_plt->plt_entry,
5748 htab->non_lazy_plt->plt_entry_size);
0ff2b86e 5749
f2c29a16
L		 5750 resolved_plt = htab->plt_second;
5751 plt_offset = eh->plt_second.offset;
0ff2b86e
L		 5752 }
5753 else
5754 {
0ff2b86e
L		 5755 resolved_plt = plt;
5756 plt_offset = h->plt.offset;
5757 }
eed180f8
RM		 5758
5759 /* Insert the relocation positions of the plt section. */
5760
5761 /* Put offset the PC-relative instruction referring to the GOT entry,
5762 subtracting the size of that instruction. */
ab7fede8
L		 5763 plt_got_pcrel_offset = (gotplt->output_section->vma
5764 + gotplt->output_offset
5765 + got_offset
5766 - resolved_plt->output_section->vma
5767 - resolved_plt->output_offset
5768 - plt_offset
38b12349 5769 - htab->plt.plt_got_insn_size);
ab7fede8
L		 5770
5771 /* Check PC-relative offset overflow in PLT entry. */
5974eba6 5772 if ((plt_got_pcrel_offset + 0x80000000) > 0xffffffff)
695344c0 5773 /* xgettext:c-format */
ab7fede8
L		 5774 info->callbacks->einfo (_("%F%B: PC-relative offset overflow in PLT entry for `%s'\n"),
5775 output_bfd, h->root.root.string);
5776
5777 bfd_put_32 (output_bfd, plt_got_pcrel_offset,
38b12349
L		 5778 (resolved_plt->contents + plt_offset
5779 + htab->plt.plt_got_offset));
cbe950e9 5780
653165cc 5781 /* Fill in the entry in the global offset table, initially this
aec6b87e
L		 5782 points to the second part of the PLT entry. Leave the entry
5783 as zero for undefined weak symbol in PIE. No PLT relocation
5784 against undefined weak symbol in PIE. */
5785 if (!local_undefweak)
cbe950e9 5786 {
38b12349
L		 5787 if (htab->plt.has_plt0)
5788 bfd_put_64 (output_bfd, (plt->output_section->vma
5789 + plt->output_offset
5790 + h->plt.offset
5791 + htab->lazy_plt->plt_lazy_offset),
5792 gotplt->contents + got_offset);
aec6b87e
L		 5793
5794 /* Fill in the entry in the .rela.plt section. */
5795 rela.r_offset = (gotplt->output_section->vma
5796 + gotplt->output_offset
5797 + got_offset);
5798 if (h->dynindx == -1
5799 || ((bfd_link_executable (info)
5800 || ELF_ST_VISIBILITY (h->other) != STV_DEFAULT)
5801 && h->def_regular
5802 && h->type == STT_GNU_IFUNC))
5803 {
6322e5c5
L		 5804 info->callbacks->minfo (_("Local IFUNC function `%s' in %B\n"),
5805 h->root.root.string,
5806 h->root.u.def.section->owner);
5807
aec6b87e
L		 5808 /* If an STT_GNU_IFUNC symbol is locally defined, generate
5809 R_X86_64_IRELATIVE instead of R_X86_64_JUMP_SLOT. */
5810 rela.r_info = htab->r_info (0, R_X86_64_IRELATIVE);
5811 rela.r_addend = (h->root.u.def.value
5812 + h->root.u.def.section->output_section->vma
5813 + h->root.u.def.section->output_offset);
5814 /* R_X86_64_IRELATIVE comes last. */
5815 plt_index = htab->next_irelative_index--;
5816 }
5817 else
5818 {
5819 rela.r_info = htab->r_info (h->dynindx, R_X86_64_JUMP_SLOT);
5820 rela.r_addend = 0;
5821 plt_index = htab->next_jump_slot_index++;
5822 }
e1f98742 5823
38b12349
L		 5824 /* Don't fill the second and third slots in PLT entry for
5825 static executables nor without PLT0. */
5826 if (plt == htab->elf.splt && htab->plt.has_plt0)
aec6b87e 5827 {
38b12349
L		 5828 bfd_vma plt0_offset
5829 = h->plt.offset + htab->lazy_plt->plt_plt_insn_end;
aec6b87e
L		 5830
5831 /* Put relocation index. */
5832 bfd_put_32 (output_bfd, plt_index,
5833 (plt->contents + h->plt.offset
38b12349 5834 + htab->lazy_plt->plt_reloc_offset));
aec6b87e
L		 5835
5836 /* Put offset for jmp .PLT0 and check for overflow. We don't
5837 check relocation index for overflow since branch displacement
5838 will overflow first. */
5839 if (plt0_offset > 0x80000000)
695344c0 5840 /* xgettext:c-format */
aec6b87e
L		 5841 info->callbacks->einfo (_("%F%B: branch displacement overflow in PLT entry for `%s'\n"),
5842 output_bfd, h->root.root.string);
5843 bfd_put_32 (output_bfd, - plt0_offset,
38b12349
L		 5844 (plt->contents + h->plt.offset
5845 + htab->lazy_plt->plt_plt_offset));
aec6b87e 5846 }
351f65ca 5847
aec6b87e
L		 5848 bed = get_elf_backend_data (output_bfd);
5849 loc = relplt->contents + plt_index * bed->s->sizeof_rela;
5850 bed->s->swap_reloca_out (output_bfd, &rela, loc);
5851 }
dd7e64d4
L		 5852 }
5853 else if (eh->plt_got.offset != (bfd_vma) -1)
5854 {
38b12349 5855 bfd_vma got_offset, plt_offset;
dd7e64d4
L		 5856 asection *plt, *got;
5857 bfd_boolean got_after_plt;
5858 int32_t got_pcrel_offset;
dd7e64d4
L		 5859
5860 /* Set the entry in the GOT procedure linkage table. */
5861 plt = htab->plt_got;
5862 got = htab->elf.sgot;
5863 got_offset = h->got.offset;
5864
5865 if (got_offset == (bfd_vma) -1
e492d2f8 5866 || (h->type == STT_GNU_IFUNC && h->def_regular)
dd7e64d4
L		 5867 || plt == NULL
5868 || got == NULL)
5869 abort ();
70256ad8 5870
38b12349 5871 /* Use the non-lazy PLT entry template for the GOT PLT since they
dd7e64d4 5872 are the identical. */
dd7e64d4
L		 5873 /* Fill in the entry in the GOT procedure linkage table. */
5874 plt_offset = eh->plt_got.offset;
5875 memcpy (plt->contents + plt_offset,
38b12349
L		 5876 htab->non_lazy_plt->plt_entry,
5877 htab->non_lazy_plt->plt_entry_size);
dd7e64d4
L		 5878
5879 /* Put offset the PC-relative instruction referring to the GOT
5880 entry, subtracting the size of that instruction. */
5881 got_pcrel_offset = (got->output_section->vma
5882 + got->output_offset
5883 + got_offset
5884 - plt->output_section->vma
5885 - plt->output_offset
5886 - plt_offset
38b12349 5887 - htab->non_lazy_plt->plt_got_insn_size);
dd7e64d4
L		 5888
5889 /* Check PC-relative offset overflow in GOT PLT entry. */
5890 got_after_plt = got->output_section->vma > plt->output_section->vma;
5891 if ((got_after_plt && got_pcrel_offset < 0)
5892 || (!got_after_plt && got_pcrel_offset > 0))
695344c0 5893 /* xgettext:c-format */
dd7e64d4
L		 5894 info->callbacks->einfo (_("%F%B: PC-relative offset overflow in GOT PLT entry for `%s'\n"),
5895 output_bfd, h->root.root.string);
5896
5897 bfd_put_32 (output_bfd, got_pcrel_offset,
38b12349
L		 5898 (plt->contents + plt_offset
5899 + htab->non_lazy_plt->plt_got_offset));
dd7e64d4
L		 5900 }
5901
aec6b87e
L		 5902 if (!local_undefweak
5903 && !h->def_regular
dd7e64d4
L		 5904 && (h->plt.offset != (bfd_vma) -1
5905 || eh->plt_got.offset != (bfd_vma) -1))
5906 {
5907 /* Mark the symbol as undefined, rather than as defined in
5908 the .plt section. Leave the value if there were any
5909 relocations where pointer equality matters (this is a clue
5910 for the dynamic linker, to make function pointer
5911 comparisons work between an application and shared
5912 library), otherwise set it to zero. If a function is only
5913 called from a binary, there is no need to slow down
5914 shared libraries because of that. */
5915 sym->st_shndx = SHN_UNDEF;
5916 if (!h->pointer_equality_needed)
5917 sym->st_value = 0;
70256ad8
AJ		 5918 }
5919
aec6b87e
L		 5920 /* Don't generate dynamic GOT relocation against undefined weak
5921 symbol in executable. */
bffbf940 5922 if (h->got.offset != (bfd_vma) -1
351f65ca 5923 && ! GOT_TLS_GD_ANY_P (elf_x86_64_hash_entry (h)->tls_type)
aec6b87e
L		 5924 && elf_x86_64_hash_entry (h)->tls_type != GOT_TLS_IE
5925 && !local_undefweak)
053579d7 5926 {
053579d7 5927 Elf_Internal_Rela rela;
233cc9c1 5928 asection *relgot = htab->elf.srelgot;
053579d7
AJ		 5929
5930 /* This symbol has an entry in the global offset table. Set it
bffbf940 5931 up. */
6de2ae4a 5932 if (htab->elf.sgot == NULL || htab->elf.srelgot == NULL)
c434dee6 5933 abort ();
053579d7 5934
6de2ae4a
L		 5935 rela.r_offset = (htab->elf.sgot->output_section->vma
5936 + htab->elf.sgot->output_offset
dc810e39 5937 + (h->got.offset &~ (bfd_vma) 1));
053579d7
AJ		 5938
5939 /* If this is a static link, or it is a -Bsymbolic link and the
5940 symbol is defined locally or was forced to be local because
5941 of a version file, we just want to emit a RELATIVE reloc.
5942 The entry in the global offset table will already have been
5943 initialized in the relocate_section function. */
710ab287 5944 if (h->def_regular
0018b0a3
L		 5945 && h->type == STT_GNU_IFUNC)
5946 {
233cc9c1
L		 5947 if (h->plt.offset == (bfd_vma) -1)
5948 {
5949 /* STT_GNU_IFUNC is referenced without PLT. */
5950 if (htab->elf.splt == NULL)
5951 {
5952 /* use .rel[a].iplt section to store .got relocations
5953 in static executable. */
5954 relgot = htab->elf.irelplt;
5955 }
5956 if (SYMBOL_REFERENCES_LOCAL (info, h))
5957 {
6322e5c5
L		 5958 info->callbacks->minfo (_("Local IFUNC function `%s' in %B\n"),
5959 output_bfd,
5960 h->root.root.string,
5961 h->root.u.def.section->owner);
5962
233cc9c1
L		 5963 rela.r_info = htab->r_info (0,
5964 R_X86_64_IRELATIVE);
5965 rela.r_addend = (h->root.u.def.value
5966 + h->root.u.def.section->output_section->vma
5967 + h->root.u.def.section->output_offset);
5968 }
5969 else
5970 goto do_glob_dat;
5971 }
5972 else if (bfd_link_pic (info))
710ab287
L		 5973 {
5974 /* Generate R_X86_64_GLOB_DAT. */
5975 goto do_glob_dat;
5976 }
5977 else
5978 {
90d60710 5979 asection *plt;
aab82f4c 5980 bfd_vma plt_offset;
90d60710 5981
710ab287
L		 5982 if (!h->pointer_equality_needed)
5983 abort ();
5984
5985 /* For non-shared object, we can't use .got.plt, which
5986 contains the real function addres if we need pointer
5987 equality. We load the GOT entry with the PLT entry. */
f2c29a16 5988 if (htab->plt_second != NULL)
aab82f4c 5989 {
f2c29a16
L		 5990 plt = htab->plt_second;
5991 plt_offset = eh->plt_second.offset;
aab82f4c
L		 5992 }
5993 else
5994 {
5995 plt = htab->elf.splt ? htab->elf.splt : htab->elf.iplt;
5996 plt_offset = h->plt.offset;
5997 }
710ab287
L		 5998 bfd_put_64 (output_bfd, (plt->output_section->vma
5999 + plt->output_offset
aab82f4c 6000 + plt_offset),
6de2ae4a 6001 htab->elf.sgot->contents + h->got.offset);
710ab287
L		 6002 return TRUE;
6003 }
0018b0a3 6004 }
0e1862bb 6005 else if (bfd_link_pic (info)
0018b0a3 6006 && SYMBOL_REFERENCES_LOCAL (info, h))
053579d7 6007 {
41bed6dd
L		 6008 if (!h->def_regular)
6009 return FALSE;
cc78d0af 6010 BFD_ASSERT((h->got.offset & 1) != 0);
351f65ca 6011 rela.r_info = htab->r_info (0, R_X86_64_RELATIVE);
053579d7
AJ		 6012 rela.r_addend = (h->root.u.def.value
6013 + h->root.u.def.section->output_section->vma
6014 + h->root.u.def.section->output_offset);
6015 }
6016 else
6017 {
6018 BFD_ASSERT((h->got.offset & 1) == 0);
710ab287 6019do_glob_dat:
c434dee6 6020 bfd_put_64 (output_bfd, (bfd_vma) 0,
6de2ae4a 6021 htab->elf.sgot->contents + h->got.offset);
351f65ca 6022 rela.r_info = htab->r_info (h->dynindx, R_X86_64_GLOB_DAT);
053579d7
AJ		 6023 rela.r_addend = 0;
6024 }
6025
233cc9c1 6026 elf_append_rela (output_bfd, relgot, &rela);
053579d7
AJ		 6027 }
6028
f5385ebf 6029 if (h->needs_copy)
70256ad8 6030 {
70256ad8 6031 Elf_Internal_Rela rela;
5474d94f 6032 asection *s;
70256ad8
AJ		 6033
6034 /* This symbol needs a copy reloc. Set it up. */
6035
c434dee6
AJ		 6036 if (h->dynindx == -1
6037 || (h->root.type != bfd_link_hash_defined
6038 && h->root.type != bfd_link_hash_defweak)
5474d94f
AM		 6039 || htab->elf.srelbss == NULL
6040 || htab->elf.sreldynrelro == NULL)
c434dee6 6041 abort ();
70256ad8
AJ		 6042
6043 rela.r_offset = (h->root.u.def.value
6044 + h->root.u.def.section->output_section->vma
6045 + h->root.u.def.section->output_offset);
351f65ca 6046 rela.r_info = htab->r_info (h->dynindx, R_X86_64_COPY);
70256ad8 6047 rela.r_addend = 0;
afbf7e8e 6048 if (h->root.u.def.section == htab->elf.sdynrelro)
5474d94f
AM		 6049 s = htab->elf.sreldynrelro;
6050 else
6051 s = htab->elf.srelbss;
6052 elf_append_rela (output_bfd, s, &rela);
70256ad8
AJ		 6053 }
6054
b34976b6 6055 return TRUE;
70256ad8
AJ		 6056}
6057
c25bc9fc
L		 6058/* Finish up local dynamic symbol handling. We set the contents of
6059 various dynamic sections here. */
6060
6061static bfd_boolean
351f65ca 6062elf_x86_64_finish_local_dynamic_symbol (void **slot, void *inf)
c25bc9fc
L		 6063{
6064 struct elf_link_hash_entry *h
6065 = (struct elf_link_hash_entry *) *slot;
6066 struct bfd_link_info *info
eed180f8 6067 = (struct bfd_link_info *) inf;
c25bc9fc 6068
351f65ca 6069 return elf_x86_64_finish_dynamic_symbol (info->output_bfd,
c25bc9fc
L		 6070 info, h, NULL);
6071}
6072
aec6b87e
L		 6073/* Finish up undefined weak symbol handling in PIE. Fill its PLT entry
6074 here since undefined weak symbol may not be dynamic and may not be
6075 called for elf_x86_64_finish_dynamic_symbol. */
6076
6077static bfd_boolean
6078elf_x86_64_pie_finish_undefweak_symbol (struct bfd_hash_entry *bh,
6079 void *inf)
6080{
6081 struct elf_link_hash_entry *h = (struct elf_link_hash_entry *) bh;
6082 struct bfd_link_info *info = (struct bfd_link_info *) inf;
6083
6084 if (h->root.type != bfd_link_hash_undefweak
6085 || h->dynindx != -1)
6086 return TRUE;
6087
6088 return elf_x86_64_finish_dynamic_symbol (info->output_bfd,
6089 info, h, NULL);
6090}
6091
c434dee6
AJ		 6092/* Used to decide how to sort relocs in an optimal manner for the
6093 dynamic linker, before writing them out. */
6094
6095static enum elf_reloc_type_class
cae1fbbb 6096elf_x86_64_reloc_type_class (const struct bfd_link_info *info,
7e612e98
AM		 6097 const asection *rel_sec ATTRIBUTE_UNUSED,
6098 const Elf_Internal_Rela *rela)
c434dee6 6099{
cae1fbbb
L		 6100 bfd *abfd = info->output_bfd;
6101 const struct elf_backend_data *bed = get_elf_backend_data (abfd);
6102 struct elf_x86_64_link_hash_table *htab = elf_x86_64_hash_table (info);
cae1fbbb 6103
d9e3b590
L		 6104 if (htab->elf.dynsym != NULL
6105 && htab->elf.dynsym->contents != NULL)
6106 {
6107 /* Check relocation against STT_GNU_IFUNC symbol if there are
6108 dynamic symbols. */
6109 unsigned long r_symndx = htab->r_sym (rela->r_info);
897463b1
L		 6110 if (r_symndx != STN_UNDEF)
6111 {
6112 Elf_Internal_Sym sym;
6113 if (!bed->s->swap_symbol_in (abfd,
6114 (htab->elf.dynsym->contents
6115 + r_symndx * bed->s->sizeof_sym),
6116 0, &sym))
6117 abort ();
d9e3b590 6118
897463b1
L		 6119 if (ELF_ST_TYPE (sym.st_info) == STT_GNU_IFUNC)
6120 return reloc_class_ifunc;
6121 }
d9e3b590 6122 }
cae1fbbb 6123
351f65ca 6124 switch ((int) ELF32_R_TYPE (rela->r_info))
c434dee6 6125 {
c428ce9d
L		 6126 case R_X86_64_IRELATIVE:
6127 return reloc_class_ifunc;
c434dee6 6128 case R_X86_64_RELATIVE:
1da80baa 6129 case R_X86_64_RELATIVE64:
c434dee6
AJ		 6130 return reloc_class_relative;
6131 case R_X86_64_JUMP_SLOT:
6132 return reloc_class_plt;
6133 case R_X86_64_COPY:
6134 return reloc_class_copy;
6135 default:
6136 return reloc_class_normal;
6137 }
6138}
6139
70256ad8
AJ		 6140/* Finish up the dynamic sections. */
6141
b34976b6 6142static bfd_boolean
351f65ca
L		 6143elf_x86_64_finish_dynamic_sections (bfd *output_bfd,
6144 struct bfd_link_info *info)
70256ad8 6145{
351f65ca 6146 struct elf_x86_64_link_hash_table *htab;
70256ad8
AJ		 6147 bfd *dynobj;
6148 asection *sdyn;
70256ad8 6149
351f65ca 6150 htab = elf_x86_64_hash_table (info);
4dfe6ac6
NC		 6151 if (htab == NULL)
6152 return FALSE;
6153
c434dee6 6154 dynobj = htab->elf.dynobj;
3d4d4302 6155 sdyn = bfd_get_linker_section (dynobj, ".dynamic");
70256ad8 6156
c434dee6 6157 if (htab->elf.dynamic_sections_created)
70256ad8 6158 {
82e96e07
L		 6159 bfd_byte *dyncon, *dynconend;
6160 const struct elf_backend_data *bed;
6161 bfd_size_type sizeof_dyn;
70256ad8 6162
6de2ae4a 6163 if (sdyn == NULL || htab->elf.sgot == NULL)
c434dee6 6164 abort ();
70256ad8 6165
82e96e07
L		 6166 bed = get_elf_backend_data (dynobj);
6167 sizeof_dyn = bed->s->sizeof_dyn;
6168 dyncon = sdyn->contents;
6169 dynconend = sdyn->contents + sdyn->size;
6170 for (; dyncon < dynconend; dyncon += sizeof_dyn)
70256ad8
AJ		 6171 {
6172 Elf_Internal_Dyn dyn;
70256ad8
AJ		 6173 asection *s;
6174
82e96e07 6175 (*bed->s->swap_dyn_in) (dynobj, dyncon, &dyn);
70256ad8
AJ		 6176
6177 switch (dyn.d_tag)
6178 {
6179 default:
053579d7 6180 continue;
70256ad8
AJ		 6181
6182 case DT_PLTGOT:
6de2ae4a 6183 s = htab->elf.sgotplt;
8c37241b 6184 dyn.d_un.d_ptr = s->output_section->vma + s->output_offset;
c434dee6 6185 break;
70256ad8
AJ		 6186
6187 case DT_JMPREL:
6de2ae4a 6188 dyn.d_un.d_ptr = htab->elf.srelplt->output_section->vma;
c434dee6 6189 break;
70256ad8 6190
c434dee6 6191 case DT_PLTRELSZ:
6de2ae4a 6192 s = htab->elf.srelplt->output_section;
eea6121a 6193 dyn.d_un.d_val = s->size;
70256ad8
AJ		 6194 break;
6195
67a4f2b7 6196 case DT_TLSDESC_PLT:
6de2ae4a 6197 s = htab->elf.splt;
67a4f2b7
AO		 6198 dyn.d_un.d_ptr = s->output_section->vma + s->output_offset
6199 + htab->tlsdesc_plt;
6200 break;
6201
6202 case DT_TLSDESC_GOT:
6de2ae4a 6203 s = htab->elf.sgot;
67a4f2b7
AO		 6204 dyn.d_un.d_ptr = s->output_section->vma + s->output_offset
6205 + htab->tlsdesc_got;
6206 break;
70256ad8 6207 }
c434dee6 6208
82e96e07 6209 (*bed->s->swap_dyn_out) (output_bfd, &dyn, dyncon);
70256ad8
AJ		 6210 }
6211
6de2ae4a 6212 if (htab->elf.splt && htab->elf.splt->size > 0)
70256ad8 6213 {
eed180f8 6214 elf_section_data (htab->elf.splt->output_section)
38b12349 6215 ->this_hdr.sh_entsize = htab->plt.plt_entry_size;
67a4f2b7 6216
38b12349 6217 if (htab->plt.has_plt0)
67a4f2b7 6218 {
38b12349
L		 6219 /* Fill in the special first entry in the procedure linkage
6220 table. */
6221 memcpy (htab->elf.splt->contents,
6222 htab->lazy_plt->plt0_entry,
6223 htab->lazy_plt->plt_entry_size);
6224 /* Add offset for pushq GOT+8(%rip), since the instruction
6225 uses 6 bytes subtract this value. */
67a4f2b7 6226 bfd_put_32 (output_bfd,
6de2ae4a
L		 6227 (htab->elf.sgotplt->output_section->vma
6228 + htab->elf.sgotplt->output_offset
67a4f2b7 6229 + 8
6de2ae4a
L		 6230 - htab->elf.splt->output_section->vma
6231 - htab->elf.splt->output_offset
67a4f2b7 6232 - 6),
38b12349
L		 6233 (htab->elf.splt->contents
6234 + htab->lazy_plt->plt0_got1_offset));
6235 /* Add offset for the PC-relative instruction accessing
6236 GOT+16, subtracting the offset to the end of that
6237 instruction. */
67a4f2b7 6238 bfd_put_32 (output_bfd,
38b12349
L		 6239 (htab->elf.sgotplt->output_section->vma
6240 + htab->elf.sgotplt->output_offset
6241 + 16
6de2ae4a
L		 6242 - htab->elf.splt->output_section->vma
6243 - htab->elf.splt->output_offset
38b12349
L		 6244 - htab->lazy_plt->plt0_got2_insn_end),
6245 (htab->elf.splt->contents
6246 + htab->lazy_plt->plt0_got2_offset));
6247
6248 if (htab->tlsdesc_plt)
6249 {
6250 bfd_put_64 (output_bfd, (bfd_vma) 0,
6251 htab->elf.sgot->contents + htab->tlsdesc_got);
6252
6253 memcpy (htab->elf.splt->contents + htab->tlsdesc_plt,
6254 htab->lazy_plt->plt0_entry,
6255 htab->lazy_plt->plt_entry_size);
6256
6257 /* Add offset for pushq GOT+8(%rip), since the
6258 instruction uses 6 bytes subtract this value. */
6259 bfd_put_32 (output_bfd,
6260 (htab->elf.sgotplt->output_section->vma
6261 + htab->elf.sgotplt->output_offset
6262 + 8
6263 - htab->elf.splt->output_section->vma
6264 - htab->elf.splt->output_offset
6265 - htab->tlsdesc_plt
6266 - 6),
6267 (htab->elf.splt->contents
6268 + htab->tlsdesc_plt
6269 + htab->lazy_plt->plt0_got1_offset));
6270 /* Add offset for the PC-relative instruction accessing
6271 GOT+TDG, where TDG stands for htab->tlsdesc_got,
6272 subtracting the offset to the end of that
6273 instruction. */
6274 bfd_put_32 (output_bfd,
6275 (htab->elf.sgot->output_section->vma
6276 + htab->elf.sgot->output_offset
6277 + htab->tlsdesc_got
6278 - htab->elf.splt->output_section->vma
6279 - htab->elf.splt->output_offset
6280 - htab->tlsdesc_plt
6281 - htab->lazy_plt->plt0_got2_insn_end),
6282 (htab->elf.splt->contents
6283 + htab->tlsdesc_plt
6284 + htab->lazy_plt->plt0_got2_offset));
6285 }
67a4f2b7 6286 }
70256ad8 6287 }
70256ad8
AJ		 6288 }
6289
38b12349
L		 6290 if (htab->plt_got != NULL && htab->plt_got->size > 0)
6291 elf_section_data (htab->plt_got->output_section)
6292 ->this_hdr.sh_entsize = htab->non_lazy_plt->plt_entry_size;
6293
f2c29a16
L		 6294 if (htab->plt_second != NULL && htab->plt_second->size > 0)
6295 elf_section_data (htab->plt_second->output_section)
38b12349 6296 ->this_hdr.sh_entsize = htab->non_lazy_plt->plt_entry_size;
0ff2b86e 6297
38b12349
L		 6298 /* GOT is always created in setup_gnu_properties. But it may not be
6299 needed. */
6300 if (htab->elf.sgotplt && htab->elf.sgotplt->size > 0)
70256ad8 6301 {
56d4289c
L		 6302 if (bfd_is_abs_section (htab->elf.sgotplt->output_section))
6303 {
4eca0228 6304 _bfd_error_handler
56d4289c
L		 6305 (_("discarded output section: `%A'"), htab->elf.sgotplt);
6306 return FALSE;
6307 }
6308
38b12349
L		 6309 /* Set the first entry in the global offset table to the address of
6310 the dynamic section. */
6311 if (sdyn == NULL)
6312 bfd_put_64 (output_bfd, (bfd_vma) 0, htab->elf.sgotplt->contents);
6313 else
6314 bfd_put_64 (output_bfd,
6315 sdyn->output_section->vma + sdyn->output_offset,
6316 htab->elf.sgotplt->contents);
6317 /* Write GOT[1] and GOT[2], needed for the dynamic linker. */
6318 bfd_put_64 (output_bfd, (bfd_vma) 0,
6319 htab->elf.sgotplt->contents + GOT_ENTRY_SIZE);
6320 bfd_put_64 (output_bfd, (bfd_vma) 0,
6321 htab->elf.sgotplt->contents + GOT_ENTRY_SIZE*2);
6322
6323 elf_section_data (htab->elf.sgotplt->output_section)->this_hdr.sh_entsize
6324 = GOT_ENTRY_SIZE;
c434dee6 6325 }
70256ad8 6326
e41b3a13 6327 /* Adjust .eh_frame for .plt section. */
9a2a56cc
AM		 6328 if (htab->plt_eh_frame != NULL
6329 && htab->plt_eh_frame->contents != NULL)
e41b3a13
JJ		 6330 {
6331 if (htab->elf.splt != NULL
6332 && htab->elf.splt->size != 0
6333 && (htab->elf.splt->flags & SEC_EXCLUDE) == 0
6334 && htab->elf.splt->output_section != NULL
6335 && htab->plt_eh_frame->output_section != NULL)
6336 {
6337 bfd_vma plt_start = htab->elf.splt->output_section->vma;
6338 bfd_vma eh_frame_start = htab->plt_eh_frame->output_section->vma
6339 + htab->plt_eh_frame->output_offset
6340 + PLT_FDE_START_OFFSET;
6341 bfd_put_signed_32 (dynobj, plt_start - eh_frame_start,
6342 htab->plt_eh_frame->contents
6343 + PLT_FDE_START_OFFSET);
6344 }
dbaa2011 6345 if (htab->plt_eh_frame->sec_info_type == SEC_INFO_TYPE_EH_FRAME)
e41b3a13
JJ		 6346 {
6347 if (! _bfd_elf_write_section_eh_frame (output_bfd, info,
6348 htab->plt_eh_frame,
6349 htab->plt_eh_frame->contents))
6350 return FALSE;
6351 }
6352 }
6353
fff53dae
L		 6354 /* Adjust .eh_frame for .plt.got section. */
6355 if (htab->plt_got_eh_frame != NULL
6356 && htab->plt_got_eh_frame->contents != NULL)
6357 {
6358 if (htab->plt_got != NULL
6359 && htab->plt_got->size != 0
6360 && (htab->plt_got->flags & SEC_EXCLUDE) == 0
6361 && htab->plt_got->output_section != NULL
6362 && htab->plt_got_eh_frame->output_section != NULL)
6363 {
6364 bfd_vma plt_start = htab->plt_got->output_section->vma;
6365 bfd_vma eh_frame_start = htab->plt_got_eh_frame->output_section->vma
6366 + htab->plt_got_eh_frame->output_offset
6367 + PLT_FDE_START_OFFSET;
6368 bfd_put_signed_32 (dynobj, plt_start - eh_frame_start,
6369 htab->plt_got_eh_frame->contents
6370 + PLT_FDE_START_OFFSET);
6371 }
6372 if (htab->plt_got_eh_frame->sec_info_type == SEC_INFO_TYPE_EH_FRAME)
6373 {
6374 if (! _bfd_elf_write_section_eh_frame (output_bfd, info,
6375 htab->plt_got_eh_frame,
6376 htab->plt_got_eh_frame->contents))
6377 return FALSE;
6378 }
6379 }
6380
f2c29a16
L		 6381 /* Adjust .eh_frame for the second PLT section. */
6382 if (htab->plt_second_eh_frame != NULL
6383 && htab->plt_second_eh_frame->contents != NULL)
8361ed4d 6384 {
f2c29a16
L		 6385 if (htab->plt_second != NULL
6386 && htab->plt_second->size != 0
6387 && (htab->plt_second->flags & SEC_EXCLUDE) == 0
6388 && htab->plt_second->output_section != NULL
6389 && htab->plt_second_eh_frame->output_section != NULL)
8361ed4d 6390 {
f2c29a16
L		 6391 bfd_vma plt_start = htab->plt_second->output_section->vma;
6392 bfd_vma eh_frame_start
6393 = (htab->plt_second_eh_frame->output_section->vma
6394 + htab->plt_second_eh_frame->output_offset
6395 + PLT_FDE_START_OFFSET);
8361ed4d 6396 bfd_put_signed_32 (dynobj, plt_start - eh_frame_start,
f2c29a16 6397 htab->plt_second_eh_frame->contents
8361ed4d
L		 6398 + PLT_FDE_START_OFFSET);
6399 }
f2c29a16
L		 6400 if (htab->plt_second_eh_frame->sec_info_type
6401 == SEC_INFO_TYPE_EH_FRAME)
8361ed4d
L		 6402 {
6403 if (! _bfd_elf_write_section_eh_frame (output_bfd, info,
f2c29a16
L		 6404 htab->plt_second_eh_frame,
6405 htab->plt_second_eh_frame->contents))
8361ed4d
L		 6406 return FALSE;
6407 }
6408 }
6409
6de2ae4a
L		 6410 if (htab->elf.sgot && htab->elf.sgot->size > 0)
6411 elf_section_data (htab->elf.sgot->output_section)->this_hdr.sh_entsize
8c37241b
JJ		 6412 = GOT_ENTRY_SIZE;
6413
aec6b87e
L		 6414 /* Fill PLT entries for undefined weak symbols in PIE. */
6415 if (bfd_link_pie (info))
6416 bfd_hash_traverse (&info->hash->table,
6417 elf_x86_64_pie_finish_undefweak_symbol,
6418 info);
6419
b34976b6 6420 return TRUE;
8d88c4ca
NC		 6421}
6422
233cc9c1
L		 6423/* Fill PLT/GOT entries and allocate dynamic relocations for local
6424 STT_GNU_IFUNC symbols, which aren't in the ELF linker hash table.
6425 It has to be done before elf_link_sort_relocs is called so that
6426 dynamic relocations are properly sorted. */
6427
6428static bfd_boolean
6429elf_x86_64_output_arch_local_syms
6430 (bfd *output_bfd ATTRIBUTE_UNUSED,
6431 struct bfd_link_info *info,
6432 void *flaginfo ATTRIBUTE_UNUSED,
6433 int (*func) (void *, const char *,
6434 Elf_Internal_Sym *,
6435 asection *,
6436 struct elf_link_hash_entry *) ATTRIBUTE_UNUSED)
6437{
6438 struct elf_x86_64_link_hash_table *htab = elf_x86_64_hash_table (info);
6439 if (htab == NULL)
6440 return FALSE;
6441
6442 /* Fill PLT and GOT entries for local STT_GNU_IFUNC symbols. */
6443 htab_traverse (htab->loc_hash_table,
6444 elf_x86_64_finish_local_dynamic_symbol,
6445 info);
6446
6447 return TRUE;
6448}
6449
38b12349 6450/* Sort relocs into address order. */
4c45e5c9 6451
38b12349
L		 6452static int
6453compare_relocs (const void *ap, const void *bp)
4c45e5c9 6454{
38b12349
L		 6455 const arelent *a = * (const arelent **) ap;
6456 const arelent *b = * (const arelent **) bp;
144bed8d 6457
38b12349
L		 6458 if (a->address > b->address)
6459 return 1;
6460 else if (a->address < b->address)
6461 return -1;
3972882e 6462 else
38b12349
L		 6463 return 0;
6464}
cca5b8b6 6465
38b12349
L		 6466enum elf_x86_64_plt_type
6467{
6468 plt_non_lazy = 0,
6469 plt_lazy = 1 << 0,
f2c29a16 6470 plt_second = 1 << 1,
38b12349
L		 6471 plt_unknown = -1
6472};
6473
6474struct elf_x86_64_plt
6475{
6476 const char *name;
6477 asection *sec;
6478 bfd_byte *contents;
6479 enum elf_x86_64_plt_type type;
6480 unsigned int plt_got_offset;
6481 unsigned int plt_got_insn_size;
6482 unsigned int plt_entry_size;
6483 long count;
6484};
6485
6486/* Forward declaration. */
6487static const struct elf_x86_64_lazy_plt_layout elf_x86_64_nacl_plt;
6488
6489/* Similar to _bfd_elf_get_synthetic_symtab. Support PLTs with all
6490 dynamic relocations. */
6491
6492static long
6493elf_x86_64_get_synthetic_symtab (bfd *abfd,
6494 long symcount ATTRIBUTE_UNUSED,
6495 asymbol **syms ATTRIBUTE_UNUSED,
6496 long dynsymcount,
6497 asymbol **dynsyms,
6498 asymbol **ret)
6499{
6500 long size, count, i, n;
6501 int j;
6502 unsigned int plt_got_offset, plt_entry_size, plt_got_insn_size;
6503 asymbol *s;
6504 bfd_byte *plt_contents;
6505 long dynrelcount, relsize;
6506 arelent **dynrelbuf;
6507 const struct elf_x86_64_lazy_plt_layout *lazy_plt;
6508 const struct elf_x86_64_non_lazy_plt_layout *non_lazy_plt;
6509 const struct elf_x86_64_lazy_plt_layout *lazy_bnd_plt;
6510 const struct elf_x86_64_non_lazy_plt_layout *non_lazy_bnd_plt;
6511 asection *plt;
6512 char *names;
6513 enum elf_x86_64_plt_type plt_type;
6514 struct elf_x86_64_plt plts[] =
144bed8d 6515 {
38b12349
L		 6516 { ".plt", NULL, NULL, plt_unknown, 0, 0, 0, 0 },
6517 { ".plt.got", NULL, NULL, plt_non_lazy, 0, 0, 0, 0 },
f2c29a16
L		 6518 { ".plt.sec", NULL, NULL, plt_second, 0, 0, 0, 0 },
6519 { ".plt.bnd", NULL, NULL, plt_second, 0, 0, 0, 0 },
dd9e66ee 6520 { NULL, NULL, NULL, plt_non_lazy, 0, 0, 0, 0 }
38b12349 6521 };
144bed8d 6522
38b12349 6523 *ret = NULL;
144bed8d 6524
38b12349
L		 6525 if ((abfd->flags & (DYNAMIC | EXEC_P)) == 0)
6526 return 0;
144bed8d 6527
38b12349
L		 6528 if (dynsymcount <= 0)
6529 return 0;
cca5b8b6 6530
38b12349
L		 6531 relsize = bfd_get_dynamic_reloc_upper_bound (abfd);
6532 if (relsize <= 0)
6533 return -1;
6534
6535 dynrelbuf = (arelent **) bfd_malloc (relsize);
6536 if (dynrelbuf == NULL)
6537 return -1;
6538
6539 dynrelcount = bfd_canonicalize_dynamic_reloc (abfd, dynrelbuf,
6540 dynsyms);
cca5b8b6 6541
38b12349
L		 6542 /* Sort the relocs by address. */
6543 qsort (dynrelbuf, dynrelcount, sizeof (arelent *), compare_relocs);
6544
6545 if (get_elf_x86_64_backend_data (abfd)->os == is_normal)
144bed8d 6546 {
38b12349
L		 6547 lazy_plt = &elf_x86_64_lazy_plt;
6548 non_lazy_plt = &elf_x86_64_non_lazy_plt;
6549 lazy_bnd_plt = &elf_x86_64_lazy_bnd_plt;
6550 non_lazy_bnd_plt = &elf_x86_64_non_lazy_bnd_plt;
6551 }
6552 else
6553 {
6554 lazy_plt = &elf_x86_64_nacl_plt;
6555 non_lazy_plt = NULL;
6556 lazy_bnd_plt = NULL;
6557 non_lazy_bnd_plt = NULL;
6558 }
144bed8d 6559
38b12349
L		 6560 count = 0;
6561 for (j = 0; plts[j].name != NULL; j++)
6562 {
6563 plt = bfd_get_section_by_name (abfd, plts[j].name);
6564 if (plt == NULL)
6f25f223 6565 continue;
533d0af0 6566
38b12349
L		 6567 /* Get the PLT section contents. */
6568 plt_contents = (bfd_byte *) bfd_malloc (plt->size);
6569 if (plt_contents == NULL)
6570 break;
6571 if (!bfd_get_section_contents (abfd, (asection *) plt,
6572 plt_contents, 0, plt->size))
6573 {
6574 free (plt_contents);
6575 break;
6576 }
144bed8d 6577
38b12349
L		 6578 /* Check what kind of PLT it is. */
6579 plt_type = plt_unknown;
6580 if (plts[j].type == plt_unknown)
144bed8d 6581 {
38b12349
L		 6582 /* Match lazy PLT first. Need to check the first two
6583 instructions. */
6584 if ((memcmp (plt_contents, lazy_plt->plt0_entry,
6585 lazy_plt->plt0_got1_offset) == 0)
6586 && (memcmp (plt_contents + 6, lazy_plt->plt0_entry + 6,
6587 2) == 0))
6588 plt_type = plt_lazy;
6589 else if (lazy_bnd_plt != NULL
6590 && (memcmp (plt_contents, lazy_bnd_plt->plt0_entry,
6591 lazy_bnd_plt->plt0_got1_offset) == 0)
6592 && (memcmp (plt_contents + 6,
6593 lazy_bnd_plt->plt0_entry + 6, 3) == 0))
ec1f73bb 6594 {
f2c29a16 6595 plt_type = plt_lazy | plt_second;
38b12349 6596 lazy_plt = lazy_bnd_plt;
ec1f73bb 6597 }
144bed8d 6598 }
fca6ae69 6599
38b12349
L		 6600 if (non_lazy_plt != NULL
6601 && (plt_type == plt_unknown || plt_type == plt_non_lazy))
6602 {
6603 /* Match non-lazy PLT. */
6604 if (memcmp (plt_contents, non_lazy_plt->plt_entry,
6605 non_lazy_plt->plt_got_offset) == 0)
6606 plt_type = plt_non_lazy;
6607 }
6608
6609 if (non_lazy_bnd_plt != NULL
f2c29a16 6610 && (plt_type == plt_unknown || plt_type == plt_second))
38b12349
L		 6611 {
6612 /* Match BND PLT. */
6613 if (memcmp (plt_contents, non_lazy_bnd_plt->plt_entry,
6614 non_lazy_bnd_plt->plt_got_offset) == 0)
6615 {
f2c29a16 6616 plt_type = plt_second;
38b12349
L		 6617 non_lazy_plt = non_lazy_bnd_plt;
6618 }
6619 }
6620
6621 if (plt_type == plt_unknown)
6622 continue;
6623
6624 plts[j].sec = plt;
6625 plts[j].type = plt_type;
6626
6627 if ((plt_type & plt_lazy))
6628 {
6629 plts[j].plt_got_offset = lazy_plt->plt_got_offset;
6630 plts[j].plt_got_insn_size = lazy_plt->plt_got_insn_size;
6631 plts[j].plt_entry_size = lazy_plt->plt_entry_size;
6632 /* Skip PLT0 in lazy PLT. */
6633 i = 1;
6634 }
6635 else
6636 {
6637 plts[j].plt_got_offset = non_lazy_plt->plt_got_offset;
6638 plts[j].plt_got_insn_size = non_lazy_plt->plt_got_insn_size;
6639 plts[j].plt_entry_size = non_lazy_plt->plt_entry_size;
6640 i = 0;
6641 }
6642
f2c29a16
L		 6643 /* Skip lazy PLT when the second PLT is used. */
6644 if (plt_type == (plt_lazy | plt_second))
38b12349
L		 6645 plts[j].count = 0;
6646 else
6647 {
6648 n = plt->size / plts[j].plt_entry_size;
6649 plts[j].count = n;
6650 count += n - i;
6651 }
6652
6653 plts[j].contents = plt_contents;
144bed8d
L		 6654 }
6655
38b12349
L		 6656 size = count * sizeof (asymbol);
6657 s = *ret = (asymbol *) bfd_zmalloc (size);
6658 if (s == NULL)
6659 {
6660bad_return:
6661 for (j = 0; plts[j].name != NULL; j++)
6662 if (plts[j].contents != NULL)
6663 free (plts[j].contents);
6664 free (dynrelbuf);
6665 return -1;
6666 }
3972882e 6667
38b12349
L		 6668 /* Check for each PLT section. */
6669 size = 0;
6670 n = 0;
6671 for (j = 0; plts[j].name != NULL; j++)
6672 if ((plt_contents = plts[j].contents) != NULL)
6673 {
6674 long k;
6675 bfd_vma offset;
8df9fc9d 6676
38b12349
L		 6677 plt_got_offset = plts[j].plt_got_offset;
6678 plt_got_insn_size = plts[j].plt_got_insn_size;
6679 plt_entry_size = plts[j].plt_entry_size;
0ff2b86e 6680
38b12349
L		 6681 plt = plts[j].sec;
6682
6683 if ((plts[j].type & plt_lazy))
6684 {
6685 /* Skip PLT0 in lazy PLT. */
6686 k = 1;
6687 offset = plt_entry_size;
6688 }
6689 else
6690 {
6691 k = 0;
6692 offset = 0;
6693 }
6694
6695 /* Check each PLT entry against dynamic relocations. */
6696 for (; k < plts[j].count; k++)
6697 {
6698 int off;
6699 bfd_vma got_vma;
6700 long min, max, mid;
6701 arelent *p;
6702
6703 /* Get the PC-relative offset, a signed 32-bit integer. */
6704 off = H_GET_32 (abfd, (plt_contents + offset
6705 + plt_got_offset));
6706 got_vma = plt->vma + offset + off + plt_got_insn_size;
6707
6708 /* Binary search. */
6709 p = dynrelbuf[0];
6710 min = 0;
6711 max = dynrelcount;
6712 while ((min + 1) < max)
6713 {
6714 arelent *r;
6715
6716 mid = (min + max) / 2;
6717 r = dynrelbuf[mid];
6718 if (got_vma > r->address)
6719 min = mid;
6720 else if (got_vma < r->address)
6721 max = mid;
6722 else
6723 {
6724 p = r;
6725 break;
6726 }
6727 }
6728
6729 /* Skip unknown relocation. PR 17512: file: bc9d6cf5. */
6730 if (got_vma == p->address
6731 && p->howto != NULL
6732 && (p->howto->type == R_X86_64_JUMP_SLOT
6733 || p->howto->type == R_X86_64_GLOB_DAT
6734 || p->howto->type == R_X86_64_IRELATIVE))
6735 {
6736 *s = **p->sym_ptr_ptr;
6737 /* Undefined syms won't have BSF_LOCAL or BSF_GLOBAL
6738 set. Since we are defining a symbol, ensure one
6739 of them is set. */
6740 if ((s->flags & BSF_LOCAL) == 0)
6741 s->flags |= BSF_GLOBAL;
6742 s->flags |= BSF_SYNTHETIC;
6743 /* This is no longer a section symbol. */
6744 s->flags &= ~BSF_SECTION_SYM;
6745 s->section = plt;
6746 s->the_bfd = plt->owner;
6747 s->value = offset;
6748 /* Store relocation for later use. */
6749 s->udata.p = p;
6750 /* Add @plt to function name later. */
6751 size += strlen (s->name) + sizeof ("@plt");
6752 if (p->addend != 0)
6753 size += sizeof ("+0x") - 1 + 8 + 8 * ABI_64_P (abfd);
6754 n++;
6755 s++;
6756 }
6757 offset += plt_entry_size;
6758 }
6759 }
6760
6761 /* PLT entries with R_X86_64_TLSDESC relocations are skipped. */
6762 if (n == 0)
6763 goto bad_return;
6764
6765 count = n;
6766
6767 /* Allocate space for @plt suffixes. */
6768 names = (char *) bfd_malloc (size);
6769 if (s == NULL)
6770 goto bad_return;
6771
6772 s = *ret;
6773 for (i = 0; i < count; i++)
6774 {
6775 /* Add @plt to function name. */
6776 arelent *p = (arelent *) s->udata.p;
6777 /* Clear it now. */
6778 s->udata.p = NULL;
6779 size = strlen (s->name);
6780 memcpy (names, s->name, size);
6781 s->name = names;
6782 names += size;
6783 if (p->addend != 0)
6784 {
6785 char buf[30], *a;
6786
6787 memcpy (names, "+0x", sizeof ("+0x") - 1);
6788 names += sizeof ("+0x") - 1;
6789 bfd_sprintf_vma (abfd, buf, p->addend);
6790 for (a = buf; *a == '0'; ++a)
6791 ;
6792 size = strlen (a);
6793 memcpy (names, a, size);
6794 names += size;
6795 }
6796 memcpy (names, "@plt", sizeof ("@plt"));
6797 names += sizeof ("@plt");
6798 s++;
6799 }
6800
6801 for (j = 0; plts[j].name != NULL; j++)
6802 if (plts[j].contents != NULL)
6803 free (plts[j].contents);
6804
6805 free (dynrelbuf);
6806
6807 return count;
0ff2b86e
L		 6808}
6809
d2b2c203
DJ		 6810/* Handle an x86-64 specific section when reading an object file. This
6811 is called when elfcode.h finds a section with an unknown type. */
6812
6813static bfd_boolean
0c723101
L		 6814elf_x86_64_section_from_shdr (bfd *abfd, Elf_Internal_Shdr *hdr,
6815 const char *name, int shindex)
d2b2c203
DJ		 6816{
6817 if (hdr->sh_type != SHT_X86_64_UNWIND)
6818 return FALSE;
6819
6dc132d9 6820 if (! _bfd_elf_make_section_from_shdr (abfd, hdr, name, shindex))
d2b2c203
DJ		 6821 return FALSE;
6822
6823 return TRUE;
6824}
6825
3b22753a
L		 6826/* Hook called by the linker routine which adds symbols from an object
6827 file. We use it to put SHN_X86_64_LCOMMON items in .lbss, instead
6828 of .bss. */
6829
6830static bfd_boolean
351f65ca 6831elf_x86_64_add_symbol_hook (bfd *abfd,
a43942db 6832 struct bfd_link_info *info ATTRIBUTE_UNUSED,
351f65ca
L		 6833 Elf_Internal_Sym *sym,
6834 const char **namep ATTRIBUTE_UNUSED,
6835 flagword *flagsp ATTRIBUTE_UNUSED,
6836 asection **secp,
6837 bfd_vma *valp)
3b22753a
L		 6838{
6839 asection *lcomm;
6840
6841 switch (sym->st_shndx)
6842 {
6843 case SHN_X86_64_LCOMMON:
6844 lcomm = bfd_get_section_by_name (abfd, "LARGE_COMMON");
6845 if (lcomm == NULL)
6846 {
6847 lcomm = bfd_make_section_with_flags (abfd,
6848 "LARGE_COMMON",
6849 (SEC_ALLOC
6850 | SEC_IS_COMMON
6851 | SEC_LINKER_CREATED));
6852 if (lcomm == NULL)
6853 return FALSE;
6854 elf_section_flags (lcomm) |= SHF_X86_64_LARGE;
6855 }
6856 *secp = lcomm;
6857 *valp = sym->st_size;
c35bdf6e 6858 return TRUE;
3b22753a 6859 }
d8045f23 6860
3b22753a
L		 6861 return TRUE;
6862}
6863
6864
6865/* Given a BFD section, try to locate the corresponding ELF section
6866 index. */
6867
6868static bfd_boolean
351f65ca
L		 6869elf_x86_64_elf_section_from_bfd_section (bfd *abfd ATTRIBUTE_UNUSED,
6870 asection *sec, int *index_return)
3b22753a
L		 6871{
6872 if (sec == &_bfd_elf_large_com_section)
6873 {
91d6fa6a 6874 *index_return = SHN_X86_64_LCOMMON;
3b22753a
L		 6875 return TRUE;
6876 }
6877 return FALSE;
6878}
6879
6880/* Process a symbol. */
6881
6882static void
351f65ca
L		 6883elf_x86_64_symbol_processing (bfd *abfd ATTRIBUTE_UNUSED,
6884 asymbol *asym)
3b22753a
L		 6885{
6886 elf_symbol_type *elfsym = (elf_symbol_type *) asym;
6887
6888 switch (elfsym->internal_elf_sym.st_shndx)
6889 {
6890 case SHN_X86_64_LCOMMON:
6891 asym->section = &_bfd_elf_large_com_section;
6892 asym->value = elfsym->internal_elf_sym.st_size;
6893 /* Common symbol doesn't set BSF_GLOBAL. */
6894 asym->flags &= ~BSF_GLOBAL;
6895 break;
6896 }
6897}
6898
6899static bfd_boolean
351f65ca 6900elf_x86_64_common_definition (Elf_Internal_Sym *sym)
3b22753a
L		 6901{
6902 return (sym->st_shndx == SHN_COMMON
6903 || sym->st_shndx == SHN_X86_64_LCOMMON);
6904}
6905
6906static unsigned int
351f65ca 6907elf_x86_64_common_section_index (asection *sec)
3b22753a
L		 6908{
6909 if ((elf_section_flags (sec) & SHF_X86_64_LARGE) == 0)
6910 return SHN_COMMON;
6911 else
6912 return SHN_X86_64_LCOMMON;
6913}
6914
6915static asection *
351f65ca 6916elf_x86_64_common_section (asection *sec)
3b22753a
L		 6917{
6918 if ((elf_section_flags (sec) & SHF_X86_64_LARGE) == 0)
6919 return bfd_com_section_ptr;
6920 else
6921 return &_bfd_elf_large_com_section;
6922}
6923
6924static bfd_boolean
5d13b3b3
AM		 6925elf_x86_64_merge_symbol (struct elf_link_hash_entry *h,
6926 const Elf_Internal_Sym *sym,
351f65ca 6927 asection **psec,
5d13b3b3
AM		 6928 bfd_boolean newdef,
6929 bfd_boolean olddef,
351f65ca 6930 bfd *oldbfd,
5d13b3b3 6931 const asection *oldsec)
3b22753a
L		 6932{
6933 /* A normal common symbol and a large common symbol result in a
00492999
L		 6934 normal common symbol. We turn the large common symbol into a
6935 normal one. */
5d13b3b3 6936 if (!olddef
3b22753a 6937 && h->root.type == bfd_link_hash_common
5d13b3b3
AM		 6938 && !newdef
6939 && bfd_is_com_section (*psec)
6940 && oldsec != *psec)
3b22753a 6941 {
00492999 6942 if (sym->st_shndx == SHN_COMMON
5d13b3b3 6943 && (elf_section_flags (oldsec) & SHF_X86_64_LARGE) != 0)
00492999
L		 6944 {
6945 h->root.u.c.p->section
6946 = bfd_make_section_old_way (oldbfd, "COMMON");
6947 h->root.u.c.p->section->flags = SEC_ALLOC;
6948 }
6949 else if (sym->st_shndx == SHN_X86_64_LCOMMON
5d13b3b3
AM		 6950 && (elf_section_flags (oldsec) & SHF_X86_64_LARGE) == 0)
6951 *psec = bfd_com_section_ptr;
3b22753a
L		 6952 }
6953
6954 return TRUE;
6955}
6956
6957static int
351f65ca
L		 6958elf_x86_64_additional_program_headers (bfd *abfd,
6959 struct bfd_link_info *info ATTRIBUTE_UNUSED)
3b22753a
L		 6960{
6961 asection *s;
9a2e389a 6962 int count = 0;
3b22753a
L		 6963
6964 /* Check to see if we need a large readonly segment. */
6965 s = bfd_get_section_by_name (abfd, ".lrodata");
6966 if (s && (s->flags & SEC_LOAD))
6967 count++;
6968
6969 /* Check to see if we need a large data segment. Since .lbss sections
6970 is placed right after the .bss section, there should be no need for
6971 a large data segment just because of .lbss. */
6972 s = bfd_get_section_by_name (abfd, ".ldata");
6973 if (s && (s->flags & SEC_LOAD))
6974 count++;
6975
6976 return count;
6977}
6978
fdc90cb4
JJ		 6979/* Return TRUE if symbol should be hashed in the `.gnu.hash' section. */
6980
6981static bfd_boolean
351f65ca 6982elf_x86_64_hash_symbol (struct elf_link_hash_entry *h)
fdc90cb4
JJ		 6983{
6984 if (h->plt.offset != (bfd_vma) -1
6985 && !h->def_regular
6986 && !h->pointer_equality_needed)
6987 return FALSE;
6988
6989 return _bfd_elf_hash_symbol (h);
6990}
6991
c543bf9a
L		 6992/* Return TRUE iff relocations for INPUT are compatible with OUTPUT. */
6993
6994static bfd_boolean
6995elf_x86_64_relocs_compatible (const bfd_target *input,
6996 const bfd_target *output)
6997{
6998 return ((xvec_get_elf_backend_data (input)->s->elfclass
6999 == xvec_get_elf_backend_data (output)->s->elfclass)
7000 && _bfd_elf_relocs_compatible (input, output));
7001}
7002
46bed679
L		 7003/* Parse x86-64 GNU properties. */
7004
7005static enum elf_property_kind
7006elf_x86_64_parse_gnu_properties (bfd *abfd, unsigned int type,
7007 bfd_byte *ptr, unsigned int datasz)
7008{
7009 elf_property *prop;
7010
7011 switch (type)
7012 {
7013 case GNU_PROPERTY_X86_ISA_1_USED:
7014 case GNU_PROPERTY_X86_ISA_1_NEEDED:
7015 if (datasz != 4)
7016 {
7017 _bfd_error_handler
7018 ((type == GNU_PROPERTY_X86_ISA_1_USED
e4097f5e
L		 7019 ? _("error: %B: <corrupt x86 ISA used size: 0x%x>")
7020 : _("error: %B: <corrupt x86 ISA needed size: 0x%x>")),
46bed679
L		 7021 abfd, datasz);
7022 return property_corrupt;
7023 }
7024 prop = _bfd_elf_get_property (abfd, type, datasz);
73caa85d
L		 7025 /* Combine properties of the same type. */
7026 prop->u.number |= bfd_h_get_32 (abfd, ptr);
46bed679
L		 7027 prop->pr_kind = property_number;
7028 break;
7029
7030 default:
7031 return property_ignored;
7032 }
7033
7034 return property_number;
7035}
7036
7037/* Merge x86-64 GNU property BPROP with APROP. If APROP isn't NULL,
7038 return TRUE if APROP is updated. Otherwise, return TRUE if BPROP
7039 should be merged with ABFD. */
7040
7041static bfd_boolean
5c3ce2bc
L		 7042elf_x86_64_merge_gnu_properties (struct bfd_link_info *info ATTRIBUTE_UNUSED,
7043 bfd *abfd ATTRIBUTE_UNUSED,
46bed679
L		 7044 elf_property *aprop,
7045 elf_property *bprop)
7046{
7047 unsigned int number;
7048 bfd_boolean updated = FALSE;
7049 unsigned int pr_type = aprop != NULL ? aprop->pr_type : bprop->pr_type;
7050
7051 switch (pr_type)
7052 {
7053 case GNU_PROPERTY_X86_ISA_1_USED:
7054 case GNU_PROPERTY_X86_ISA_1_NEEDED:
7055 if (aprop != NULL && bprop != NULL)
7056 {
7057 number = aprop->u.number;
7058 aprop->u.number = number | bprop->u.number;
7059 updated = number != (unsigned int) aprop->u.number;
7060 }
7061 else
7062 {
7063 /* Return TRUE if APROP is NULL to indicate that BPROP should
7064 be added to ABFD. */
7065 updated = aprop == NULL;
7066 }
7067 break;
7068
7069 default:
7070 /* Never should happen. */
7071 abort ();
7072 }
7073
7074 return updated;
7075}
7076
38b12349
L		 7077/* Set up x86-64 GNU properties. Return the first relocatable ELF input
7078 with GNU properties if found. Otherwise, return NULL. */
7079
7080static bfd *
7081elf_x86_64_link_setup_gnu_properties (struct bfd_link_info *info)
7082{
7083 bfd_boolean normal_target;
7084 bfd_boolean lazy_plt;
7085 asection *sec, *pltsec;
7086 bfd *dynobj;
7087 unsigned int plt_alignment;
7088 struct elf_x86_64_link_hash_table *htab;
7089 bfd *pbfd = _bfd_elf_link_setup_gnu_properties (info);
7090
7091 if (bfd_link_relocatable (info))
7092 return pbfd;
7093
7094 htab = elf_x86_64_hash_table (info);
7095 if (htab == NULL)
7096 return pbfd;
7097
7098 dynobj = htab->elf.dynobj;
7099
7100 /* Set htab->elf.dynobj here so that there is no need to check and
7101 set it in check_relocs. */
7102 if (dynobj == NULL)
7103 {
7104 bfd *abfd;
7105
7106 /* Find a normal input file to hold linker created
7107 sections. */
7108 for (abfd = info->input_bfds;
7109 abfd != NULL;
7110 abfd = abfd->link.next)
7111 if ((abfd->flags
7112 & (DYNAMIC | BFD_LINKER_CREATED | BFD_PLUGIN)) == 0)
7113 {
7114 htab->elf.dynobj = abfd;
7115 dynobj = abfd;
7116 break;
7117 }
7118 }
7119
7120 /* Even when lazy binding is disabled by "-z now", the PLT0 entry may
7121 still be used with LD_AUDIT or LD_PROFILE if PLT entry is used for
7122 canonical function address. */
7123 htab->plt.has_plt0 = 1;
7124
7125 if (get_elf_x86_64_backend_data (info->output_bfd)->os
7126 == is_normal)
7127 {
7128 if (info->bndplt)
7129 {
7130 htab->lazy_plt = &elf_x86_64_lazy_bnd_plt;
7131 htab->non_lazy_plt = &elf_x86_64_non_lazy_bnd_plt;
7132 }
7133 else
7134 {
7135 htab->lazy_plt = &elf_x86_64_lazy_plt;
7136 htab->non_lazy_plt = &elf_x86_64_non_lazy_plt;
7137 }
7138 normal_target = TRUE;
7139 }
7140 else
7141 {
7142 htab->lazy_plt = &elf_x86_64_nacl_plt;
7143 htab->non_lazy_plt = NULL;
7144 normal_target = FALSE;
7145 }
7146
7147 pltsec = htab->elf.splt;
7148
7149 /* If the non-lazy PLT is available, use it for all PLT entries if
7150 there are no PLT0 or no .plt section. */
7151 if (htab->non_lazy_plt != NULL
7152 && (!htab->plt.has_plt0 || pltsec == NULL))
7153 {
7154 lazy_plt = FALSE;
7155 htab->plt.plt_entry
7156 = htab->non_lazy_plt->plt_entry;
7157 htab->plt.plt_entry_size
7158 = htab->non_lazy_plt->plt_entry_size;
7159 htab->plt.plt_got_offset
7160 = htab->non_lazy_plt->plt_got_offset;
7161 htab->plt.plt_got_insn_size
7162 = htab->non_lazy_plt->plt_got_insn_size;
7163 htab->plt.eh_frame_plt_size
7164 = htab->non_lazy_plt->eh_frame_plt_size;
7165 htab->plt.eh_frame_plt
7166 = htab->non_lazy_plt->eh_frame_plt;
7167 }
7168 else
7169 {
7170 lazy_plt = TRUE;
7171 htab->plt.plt_entry
7172 = htab->lazy_plt->plt_entry;
7173 htab->plt.plt_entry_size
7174 = htab->lazy_plt->plt_entry_size;
7175 htab->plt.plt_got_offset
7176 = htab->lazy_plt->plt_got_offset;
7177 htab->plt.plt_got_insn_size
7178 = htab->lazy_plt->plt_got_insn_size;
7179 htab->plt.eh_frame_plt_size
7180 = htab->lazy_plt->eh_frame_plt_size;
7181 htab->plt.eh_frame_plt
7182 = htab->lazy_plt->eh_frame_plt;
7183 }
7184
7185 /* Return if there are no normal input files. */
7186 if (dynobj == NULL)
7187 return pbfd;
7188
7189 /* Since create_dynamic_sections isn't always called, but GOT
7190 relocations need GOT relocations, create them here so that we
7191 don't need to do it in check_relocs. */
7192 if (htab->elf.sgot == NULL
7193 && !_bfd_elf_create_got_section (dynobj, info))
7194 info->callbacks->einfo (_("%F: failed to create GOT sections\n"));
7195
7196 /* Align .got and .got.plt sections to their entry size. Do it here
7197 instead of in create_dynamic_sections so that they are always
7198 properly aligned even if create_dynamic_sections isn't called. */
7199 sec = htab->elf.sgot;
7200 if (!bfd_set_section_alignment (dynobj, sec, 3))
7201 {
7202error_alignment:
7203 info->callbacks->einfo (_("%F%A: failed to align section\n"),
7204 sec);
7205 }
7206
7207 sec = htab->elf.sgotplt;
7208 if (!bfd_set_section_alignment (dynobj, sec, 3))
7209 goto error_alignment;
7210
7211 /* Create the ifunc sections here so that check_relocs can be
7212 simplified. */
7213 if (!_bfd_elf_create_ifunc_sections (dynobj, info))
7214 info->callbacks->einfo (_("%F: failed to create ifunc sections\n"));
7215
7216 plt_alignment = bfd_log2 (htab->plt.plt_entry_size);
7217
7218 if (pltsec != NULL)
7219 {
7220 /* Whe creating executable, set the contents of the .interp
7221 section to the interpreter. */
7222 if (bfd_link_executable (info) && !info->nointerp)
7223 {
7224 asection *s = bfd_get_linker_section (dynobj, ".interp");
7225 if (s == NULL)
7226 abort ();
7227 s->size = htab->dynamic_interpreter_size;
7228 s->contents = (unsigned char *) htab->dynamic_interpreter;
7229 htab->interp = s;
7230 }
7231
7232 /* Don't change PLT section alignment for NaCl since it uses
7233 64-byte PLT entry and sets PLT section alignment to 32
7234 bytes. Don't create additional PLT sections for NaCl. */
7235 if (normal_target)
7236 {
7237 const struct elf_backend_data *bed
7238 = get_elf_backend_data (dynobj);
7239 flagword pltflags = (bed->dynamic_sec_flags
7240 | SEC_ALLOC
7241 | SEC_CODE
7242 | SEC_LOAD
7243 | SEC_READONLY);
7244 unsigned int non_lazy_plt_alignment
7245 = bfd_log2 (htab->non_lazy_plt->plt_entry_size);
7246
7247 sec = pltsec;
7248 if (!bfd_set_section_alignment (sec->owner, sec,
7249 plt_alignment))
7250 goto error_alignment;
7251
7252 /* Create the GOT procedure linkage table. */
7253 sec = bfd_make_section_anyway_with_flags (dynobj,
7254 ".plt.got",
7255 pltflags);
7256 if (sec == NULL)
7257 info->callbacks->einfo (_("%F: failed to create GOT PLT section\n"));
7258
7259 if (!bfd_set_section_alignment (dynobj, sec,
7260 non_lazy_plt_alignment))
7261 goto error_alignment;
7262
7263 htab->plt_got = sec;
7264
7265 /* MPX PLT is supported only for non-NaCl target in 64-bit
7266 mode and is needed only for lazy binding. */
7267 if (lazy_plt
25f94347 7268 && info->bndplt && ABI_64_P (dynobj))
38b12349
L		 7269 {
7270 /* Create the second PLT for Intel MPX support. */
7271 sec = bfd_make_section_anyway_with_flags (dynobj,
f2c29a16 7272 ".plt.sec",
38b12349
L		 7273 pltflags);
7274 if (sec == NULL)
7275 info->callbacks->einfo (_("%F: failed to create BND PLT section\n"));
7276
7277 if (!bfd_set_section_alignment (dynobj, sec,
7278 non_lazy_plt_alignment))
7279 goto error_alignment;
7280
f2c29a16 7281 htab->plt_second = sec;
38b12349
L		 7282 }
7283 }
7284
7285 if (!info->no_ld_generated_unwind_info)
7286 {
7287 flagword flags = (SEC_ALLOC | SEC_LOAD | SEC_READONLY
7288 | SEC_HAS_CONTENTS | SEC_IN_MEMORY
7289 | SEC_LINKER_CREATED);
7290
7291 sec = bfd_make_section_anyway_with_flags (dynobj,
7292 ".eh_frame",
7293 flags);
7294 if (sec == NULL)
7295 info->callbacks->einfo (_("%F: failed to create PLT .eh_frame section\n"));
7296
7297 if (!bfd_set_section_alignment (dynobj, sec,
7298 ABI_64_P (dynobj) ? 3 : 2))
7299 goto error_alignment;
7300
7301 htab->plt_eh_frame = sec;
7302
7303 if (htab->plt_got != NULL)
7304 {
7305 sec = bfd_make_section_anyway_with_flags (dynobj,
7306 ".eh_frame",
7307 flags);
7308 if (sec == NULL)
7309 info->callbacks->einfo (_("%F: failed to create GOT PLT .eh_frame section\n"));
7310
7311 if (!bfd_set_section_alignment (dynobj, sec,
7312 ABI_64_P (dynobj) ? 3 : 2))
7313 goto error_alignment;
7314
7315 htab->plt_got_eh_frame = sec;
7316 }
7317
f2c29a16 7318 if (htab->plt_second != NULL)
38b12349
L		 7319 {
7320 sec = bfd_make_section_anyway_with_flags (dynobj,
7321 ".eh_frame",
7322 flags);
7323 if (sec == NULL)
7324 info->callbacks->einfo (_("%F: failed to create BND PLT .eh_frame section\n"));
7325
7326 if (!bfd_set_section_alignment (dynobj, sec, 3))
7327 goto error_alignment;
7328
f2c29a16 7329 htab->plt_second_eh_frame = sec;
38b12349
L		 7330 }
7331 }
7332 }
7333
7334 if (normal_target)
7335 {
7336 /* The .iplt section is used for IFUNC symbols in static
7337 executables. */
7338 sec = htab->elf.iplt;
7339 if (sec != NULL
7340 && !bfd_set_section_alignment (sec->owner, sec,
7341 plt_alignment))
7342 goto error_alignment;
7343 }
7344
7345 return pbfd;
7346}
7347
9a2e389a 7348static const struct bfd_elf_special_section
46bed679 7349elf_x86_64_special_sections[]=
3b22753a 7350{
0112cd26
NC		 7351 { STRING_COMMA_LEN (".gnu.linkonce.lb"), -2, SHT_NOBITS, SHF_ALLOC + SHF_WRITE + SHF_X86_64_LARGE},
7352 { STRING_COMMA_LEN (".gnu.linkonce.lr"), -2, SHT_PROGBITS, SHF_ALLOC + SHF_X86_64_LARGE},
7353 { STRING_COMMA_LEN (".gnu.linkonce.lt"), -2, SHT_PROGBITS, SHF_ALLOC + SHF_EXECINSTR + SHF_X86_64_LARGE},
7354 { STRING_COMMA_LEN (".lbss"), -2, SHT_NOBITS, SHF_ALLOC + SHF_WRITE + SHF_X86_64_LARGE},
7355 { STRING_COMMA_LEN (".ldata"), -2, SHT_PROGBITS, SHF_ALLOC + SHF_WRITE + SHF_X86_64_LARGE},
7356 { STRING_COMMA_LEN (".lrodata"), -2, SHT_PROGBITS, SHF_ALLOC + SHF_X86_64_LARGE},
7357 { NULL, 0, 0, 0, 0 }
3b22753a
L		 7358};
7359
6d00b590 7360#define TARGET_LITTLE_SYM x86_64_elf64_vec
70256ad8
AJ		 7361#define TARGET_LITTLE_NAME "elf64-x86-64"
7362#define ELF_ARCH bfd_arch_i386
ae95ffa6 7363#define ELF_TARGET_ID X86_64_ELF_DATA
70256ad8 7364#define ELF_MACHINE_CODE EM_X86_64
f7661549 7365#define ELF_MAXPAGESIZE 0x200000
2043964e 7366#define ELF_MINPAGESIZE 0x1000
24718e3b 7367#define ELF_COMMONPAGESIZE 0x1000
70256ad8
AJ		 7368
7369#define elf_backend_can_gc_sections 1
51b64d56 7370#define elf_backend_can_refcount 1
70256ad8
AJ		 7371#define elf_backend_want_got_plt 1
7372#define elf_backend_plt_readonly 1
7373#define elf_backend_want_plt_sym 0
7374#define elf_backend_got_header_size (GOT_ENTRY_SIZE*3)
b491616a 7375#define elf_backend_rela_normal 1
e41b3a13 7376#define elf_backend_plt_alignment 4
f7483970 7377#define elf_backend_extern_protected_data 1
bedfd056 7378#define elf_backend_caches_rawsize 1
64f52338 7379#define elf_backend_dtrel_excludes_plt 1
5474d94f 7380#define elf_backend_want_dynrelro 1
70256ad8 7381
351f65ca 7382#define elf_info_to_howto elf_x86_64_info_to_howto
70256ad8 7383
70256ad8 7384#define bfd_elf64_bfd_link_hash_table_create \
351f65ca 7385 elf_x86_64_link_hash_table_create
351f65ca 7386#define bfd_elf64_bfd_reloc_type_lookup elf_x86_64_reloc_type_lookup
157090f7 7387#define bfd_elf64_bfd_reloc_name_lookup \
351f65ca 7388 elf_x86_64_reloc_name_lookup
70256ad8 7389
351f65ca 7390#define elf_backend_adjust_dynamic_symbol elf_x86_64_adjust_dynamic_symbol
c543bf9a 7391#define elf_backend_relocs_compatible elf_x86_64_relocs_compatible
351f65ca
L		 7392#define elf_backend_check_relocs elf_x86_64_check_relocs
7393#define elf_backend_copy_indirect_symbol elf_x86_64_copy_indirect_symbol
38b12349 7394#define elf_backend_create_dynamic_sections _bfd_elf_create_dynamic_sections
351f65ca
L		 7395#define elf_backend_finish_dynamic_sections elf_x86_64_finish_dynamic_sections
7396#define elf_backend_finish_dynamic_symbol elf_x86_64_finish_dynamic_symbol
233cc9c1 7397#define elf_backend_output_arch_local_syms elf_x86_64_output_arch_local_syms
351f65ca 7398#define elf_backend_gc_mark_hook elf_x86_64_gc_mark_hook
351f65ca
L		 7399#define elf_backend_grok_prstatus elf_x86_64_grok_prstatus
7400#define elf_backend_grok_psinfo elf_x86_64_grok_psinfo
8fd79e71
L		 7401#ifdef CORE_HEADER
7402#define elf_backend_write_core_note elf_x86_64_write_core_note
7403#endif
351f65ca
L		 7404#define elf_backend_reloc_type_class elf_x86_64_reloc_type_class
7405#define elf_backend_relocate_section elf_x86_64_relocate_section
7406#define elf_backend_size_dynamic_sections elf_x86_64_size_dynamic_sections
7407#define elf_backend_always_size_sections elf_x86_64_always_size_sections
74541ad4 7408#define elf_backend_init_index_section _bfd_elf_init_1_index_section
407443a3 7409#define elf_backend_object_p elf64_x86_64_elf_object_p
351f65ca 7410#define bfd_elf64_mkobject elf_x86_64_mkobject
0ff2b86e 7411#define bfd_elf64_get_synthetic_symtab elf_x86_64_get_synthetic_symtab
8d88c4ca 7412
d2b2c203 7413#define elf_backend_section_from_shdr \
351f65ca 7414 elf_x86_64_section_from_shdr
d2b2c203 7415
3b22753a 7416#define elf_backend_section_from_bfd_section \
351f65ca 7417 elf_x86_64_elf_section_from_bfd_section
3b22753a 7418#define elf_backend_add_symbol_hook \
351f65ca 7419 elf_x86_64_add_symbol_hook
3b22753a 7420#define elf_backend_symbol_processing \
351f65ca 7421 elf_x86_64_symbol_processing
3b22753a 7422#define elf_backend_common_section_index \
351f65ca 7423 elf_x86_64_common_section_index
3b22753a 7424#define elf_backend_common_section \
351f65ca 7425 elf_x86_64_common_section
3b22753a 7426#define elf_backend_common_definition \
351f65ca 7427 elf_x86_64_common_definition
3b22753a 7428#define elf_backend_merge_symbol \
351f65ca 7429 elf_x86_64_merge_symbol
3b22753a 7430#define elf_backend_special_sections \
351f65ca 7431 elf_x86_64_special_sections
3b22753a 7432#define elf_backend_additional_program_headers \
351f65ca 7433 elf_x86_64_additional_program_headers
fdc90cb4 7434#define elf_backend_hash_symbol \
351f65ca 7435 elf_x86_64_hash_symbol
8f79b794
L		 7436#define elf_backend_omit_section_dynsym \
7437 ((bfd_boolean (*) (bfd *, struct bfd_link_info *, asection *)) bfd_true)
aec6b87e
L		 7438#define elf_backend_fixup_symbol \
7439 elf_x86_64_fixup_symbol
46bed679
L		 7440#define elf_backend_parse_gnu_properties \
7441 elf_x86_64_parse_gnu_properties
7442#define elf_backend_merge_gnu_properties \
7443 elf_x86_64_merge_gnu_properties
38b12349
L		 7444#define elf_backend_setup_gnu_properties \
7445 elf_x86_64_link_setup_gnu_properties
3b22753a 7446
8d88c4ca 7447#include "elf64-target.h"
9d7cbccd 7448
6036f486
ES		 7449/* CloudABI support. */
7450
7451#undef TARGET_LITTLE_SYM
7452#define TARGET_LITTLE_SYM x86_64_elf64_cloudabi_vec
7453#undef TARGET_LITTLE_NAME
7454#define TARGET_LITTLE_NAME "elf64-x86-64-cloudabi"
7455
7456#undef ELF_OSABI
7457#define ELF_OSABI ELFOSABI_CLOUDABI
7458
7459#undef elf64_bed
7460#define elf64_bed elf64_x86_64_cloudabi_bed
7461
7462#include "elf64-target.h"
7463
9d7cbccd
NC		 7464/* FreeBSD support. */
7465
7466#undef TARGET_LITTLE_SYM
6d00b590 7467#define TARGET_LITTLE_SYM x86_64_elf64_fbsd_vec
9d7cbccd
NC		 7468#undef TARGET_LITTLE_NAME
7469#define TARGET_LITTLE_NAME "elf64-x86-64-freebsd"
7470
d1036acb
L		 7471#undef ELF_OSABI
7472#define ELF_OSABI ELFOSABI_FREEBSD
9d7cbccd 7473
9d7cbccd
NC		 7474#undef elf64_bed
7475#define elf64_bed elf64_x86_64_fbsd_bed
7476
7477#include "elf64-target.h"
8a9036a4 7478
a6cc6b3b
RO		 7479/* Solaris 2 support. */
7480
7481#undef TARGET_LITTLE_SYM
6d00b590 7482#define TARGET_LITTLE_SYM x86_64_elf64_sol2_vec
a6cc6b3b
RO		 7483#undef TARGET_LITTLE_NAME
7484#define TARGET_LITTLE_NAME "elf64-x86-64-sol2"
7485
7486/* Restore default: we cannot use ELFOSABI_SOLARIS, otherwise ELFOSABI_NONE
7487 objects won't be recognized. */
7488#undef ELF_OSABI
7489
7490#undef elf64_bed
7491#define elf64_bed elf64_x86_64_sol2_bed
7492
7dc98aea
RO		 7493/* The 64-bit static TLS arena size is rounded to the nearest 16-byte
7494 boundary. */
84865015 7495#undef elf_backend_static_tls_alignment
7dc98aea
RO		 7496#define elf_backend_static_tls_alignment 16
7497
a6cc6b3b
RO		 7498/* The Solaris 2 ABI requires a plt symbol on all platforms.
7499
7500 Cf. Linker and Libraries Guide, Ch. 2, Link-Editor, Generating the Output
7501 File, p.63. */
84865015 7502#undef elf_backend_want_plt_sym
a6cc6b3b
RO		 7503#define elf_backend_want_plt_sym 1
7504
84865015
NC		 7505#undef elf_backend_strtab_flags
7506#define elf_backend_strtab_flags SHF_STRINGS
7507
7508static bfd_boolean
5522f910
NC		 7509elf64_x86_64_copy_solaris_special_section_fields (const bfd *ibfd ATTRIBUTE_UNUSED,
7510 bfd *obfd ATTRIBUTE_UNUSED,
7511 const Elf_Internal_Shdr *isection ATTRIBUTE_UNUSED,
7512 Elf_Internal_Shdr *osection ATTRIBUTE_UNUSED)
84865015
NC		 7513{
7514 /* PR 19938: FIXME: Need to add code for setting the sh_info
7515 and sh_link fields of Solaris specific section types. */
7516 return FALSE;
7517}
7518
5522f910
NC		 7519#undef elf_backend_copy_special_section_fields
7520#define elf_backend_copy_special_section_fields elf64_x86_64_copy_solaris_special_section_fields
84865015 7521
a6cc6b3b
RO		 7522#include "elf64-target.h"
7523
8059fb19
RM		 7524/* Native Client support. */
7525
64b384e1
RM		 7526static bfd_boolean
7527elf64_x86_64_nacl_elf_object_p (bfd *abfd)
7528{
7529 /* Set the right machine number for a NaCl x86-64 ELF64 file. */
7530 bfd_default_set_arch_mach (abfd, bfd_arch_i386, bfd_mach_x86_64_nacl);
7531 return TRUE;
7532}
7533
8059fb19 7534#undef TARGET_LITTLE_SYM
6d00b590 7535#define TARGET_LITTLE_SYM x86_64_elf64_nacl_vec
8059fb19
RM		 7536#undef TARGET_LITTLE_NAME
7537#define TARGET_LITTLE_NAME "elf64-x86-64-nacl"
7538#undef elf64_bed
7539#define elf64_bed elf64_x86_64_nacl_bed
7540
7541#undef ELF_MAXPAGESIZE
7542#undef ELF_MINPAGESIZE
7543#undef ELF_COMMONPAGESIZE
7544#define ELF_MAXPAGESIZE 0x10000
7545#define ELF_MINPAGESIZE 0x10000
7546#define ELF_COMMONPAGESIZE 0x10000
7547
7548/* Restore defaults. */
7549#undef ELF_OSABI
7550#undef elf_backend_static_tls_alignment
7551#undef elf_backend_want_plt_sym
7552#define elf_backend_want_plt_sym 0
84865015 7553#undef elf_backend_strtab_flags
5522f910 7554#undef elf_backend_copy_special_section_fields
8059fb19
RM		 7555
7556/* NaCl uses substantially different PLT entries for the same effects. */
7557
7558#undef elf_backend_plt_alignment
7559#define elf_backend_plt_alignment 5
7560#define NACL_PLT_ENTRY_SIZE 64
7561#define NACLMASK 0xe0 /* 32-byte alignment mask. */
7562
7563static const bfd_byte elf_x86_64_nacl_plt0_entry[NACL_PLT_ENTRY_SIZE] =
7564 {
7565 0xff, 0x35, 8, 0, 0, 0, /* pushq GOT+8(%rip) */
7566 0x4c, 0x8b, 0x1d, 16, 0, 0, 0, /* mov GOT+16(%rip), %r11 */
7567 0x41, 0x83, 0xe3, NACLMASK, /* and $-32, %r11d */
7568 0x4d, 0x01, 0xfb, /* add %r15, %r11 */
7569 0x41, 0xff, 0xe3, /* jmpq *%r11 */
7570
ea2d813e 7571 /* 9-byte nop sequence to pad out to the next 32-byte boundary. */
70cc877f 7572 0x66, 0x0f, 0x1f, 0x84, 0, 0, 0, 0, 0, /* nopw 0x0(%rax,%rax,1) */
ea2d813e
RM		 7573
7574 /* 32 bytes of nop to pad out to the standard size. */
3ddf1bdd 7575 0x66, 0x66, 0x66, 0x66, 0x66, 0x66, /* excess data16 prefixes */
8059fb19 7576 0x2e, 0x0f, 0x1f, 0x84, 0, 0, 0, 0, 0, /* nopw %cs:0x0(%rax,%rax,1) */
3ddf1bdd 7577 0x66, 0x66, 0x66, 0x66, 0x66, 0x66, /* excess data16 prefixes */
8059fb19 7578 0x2e, 0x0f, 0x1f, 0x84, 0, 0, 0, 0, 0, /* nopw %cs:0x0(%rax,%rax,1) */
3ddf1bdd 7579 0x66, /* excess data16 prefix */
ea2d813e 7580 0x90 /* nop */
8059fb19
RM		 7581 };
7582
7583static const bfd_byte elf_x86_64_nacl_plt_entry[NACL_PLT_ENTRY_SIZE] =
7584 {
7585 0x4c, 0x8b, 0x1d, 0, 0, 0, 0, /* mov name@GOTPCREL(%rip),%r11 */
7586 0x41, 0x83, 0xe3, NACLMASK, /* and $-32, %r11d */
7587 0x4d, 0x01, 0xfb, /* add %r15, %r11 */
7588 0x41, 0xff, 0xe3, /* jmpq *%r11 */
7589
7590 /* 15-byte nop sequence to pad out to the next 32-byte boundary. */
3ddf1bdd 7591 0x66, 0x66, 0x66, 0x66, 0x66, 0x66, /* excess data16 prefixes */
8059fb19
RM		 7592 0x2e, 0x0f, 0x1f, 0x84, 0, 0, 0, 0, 0, /* nopw %cs:0x0(%rax,%rax,1) */
7593
7594 /* Lazy GOT entries point here (32-byte aligned). */
7595 0x68, /* pushq immediate */
7596 0, 0, 0, 0, /* replaced with index into relocation table. */
7597 0xe9, /* jmp relative */
7598 0, 0, 0, 0, /* replaced with offset to start of .plt0. */
7599
7600 /* 22 bytes of nop to pad out to the standard size. */
3ddf1bdd 7601 0x66, 0x66, 0x66, 0x66, 0x66, 0x66, /* excess data16 prefixes */
8059fb19
RM		 7602 0x2e, 0x0f, 0x1f, 0x84, 0, 0, 0, 0, 0, /* nopw %cs:0x0(%rax,%rax,1) */
7603 0x0f, 0x1f, 0x80, 0, 0, 0, 0, /* nopl 0x0(%rax) */
7604 };
7605
7606/* .eh_frame covering the .plt section. */
7607
7608static const bfd_byte elf_x86_64_nacl_eh_frame_plt[] =
7609 {
7610#if (PLT_CIE_LENGTH != 20 \
7611 || PLT_FDE_LENGTH != 36 \
7612 || PLT_FDE_START_OFFSET != 4 + PLT_CIE_LENGTH + 8 \
7613 || PLT_FDE_LEN_OFFSET != 4 + PLT_CIE_LENGTH + 12)
7614# error "Need elf_x86_64_backend_data parameters for eh_frame_plt offsets!"
7615#endif
7616 PLT_CIE_LENGTH, 0, 0, 0, /* CIE length */
7617 0, 0, 0, 0, /* CIE ID */
7618 1, /* CIE version */
7619 'z', 'R', 0, /* Augmentation string */
7620 1, /* Code alignment factor */
7621 0x78, /* Data alignment factor */
7622 16, /* Return address column */
7623 1, /* Augmentation size */
7624 DW_EH_PE_pcrel | DW_EH_PE_sdata4, /* FDE encoding */
7625 DW_CFA_def_cfa, 7, 8, /* DW_CFA_def_cfa: r7 (rsp) ofs 8 */
7626 DW_CFA_offset + 16, 1, /* DW_CFA_offset: r16 (rip) at cfa-8 */
7627 DW_CFA_nop, DW_CFA_nop,
7628
7629 PLT_FDE_LENGTH, 0, 0, 0, /* FDE length */
7630 PLT_CIE_LENGTH + 8, 0, 0, 0,/* CIE pointer */
7631 0, 0, 0, 0, /* R_X86_64_PC32 .plt goes here */
7632 0, 0, 0, 0, /* .plt size goes here */
7633 0, /* Augmentation size */
7634 DW_CFA_def_cfa_offset, 16, /* DW_CFA_def_cfa_offset: 16 */
7635 DW_CFA_advance_loc + 6, /* DW_CFA_advance_loc: 6 to __PLT__+6 */
7636 DW_CFA_def_cfa_offset, 24, /* DW_CFA_def_cfa_offset: 24 */
7637 DW_CFA_advance_loc + 58, /* DW_CFA_advance_loc: 58 to __PLT__+64 */
7638 DW_CFA_def_cfa_expression, /* DW_CFA_def_cfa_expression */
7639 13, /* Block length */
7640 DW_OP_breg7, 8, /* DW_OP_breg7 (rsp): 8 */
7641 DW_OP_breg16, 0, /* DW_OP_breg16 (rip): 0 */
7642 DW_OP_const1u, 63, DW_OP_and, DW_OP_const1u, 37, DW_OP_ge,
7643 DW_OP_lit3, DW_OP_shl, DW_OP_plus,
7644 DW_CFA_nop, DW_CFA_nop
7645 };
7646
38b12349 7647static const struct elf_x86_64_lazy_plt_layout elf_x86_64_nacl_plt =
8059fb19
RM		 7648 {
7649 elf_x86_64_nacl_plt0_entry, /* plt0_entry */
7650 elf_x86_64_nacl_plt_entry, /* plt_entry */
7651 NACL_PLT_ENTRY_SIZE, /* plt_entry_size */
7652 2, /* plt0_got1_offset */
7653 9, /* plt0_got2_offset */
7654 13, /* plt0_got2_insn_end */
7655 3, /* plt_got_offset */
7656 33, /* plt_reloc_offset */
7657 38, /* plt_plt_offset */
7658 7, /* plt_got_insn_size */
7659 42, /* plt_plt_insn_end */
7660 32, /* plt_lazy_offset */
7661 elf_x86_64_nacl_eh_frame_plt, /* eh_frame_plt */
38b12349
L		 7662 sizeof (elf_x86_64_nacl_eh_frame_plt) /* eh_frame_plt_size */
7663 };
7664
7665static const struct elf_x86_64_backend_data elf_x86_64_nacl_arch_bed =
7666 {
7667 is_nacl /* os */
8059fb19
RM		 7668 };
7669
7670#undef elf_backend_arch_data
7671#define elf_backend_arch_data &elf_x86_64_nacl_arch_bed
7672
64b384e1
RM		 7673#undef elf_backend_object_p
7674#define elf_backend_object_p elf64_x86_64_nacl_elf_object_p
5a68afcf
RM		 7675#undef elf_backend_modify_segment_map
7676#define elf_backend_modify_segment_map nacl_modify_segment_map
7677#undef elf_backend_modify_program_headers
7678#define elf_backend_modify_program_headers nacl_modify_program_headers
887badb3
RM		 7679#undef elf_backend_final_write_processing
7680#define elf_backend_final_write_processing nacl_final_write_processing
5a68afcf 7681
8059fb19
RM		 7682#include "elf64-target.h"
7683
7684/* Native Client x32 support. */
7685
64b384e1
RM		 7686static bfd_boolean
7687elf32_x86_64_nacl_elf_object_p (bfd *abfd)
7688{
7689 /* Set the right machine number for a NaCl x86-64 ELF32 file. */
7690 bfd_default_set_arch_mach (abfd, bfd_arch_i386, bfd_mach_x64_32_nacl);
7691 return TRUE;
7692}
7693
8059fb19 7694#undef TARGET_LITTLE_SYM
6d00b590 7695#define TARGET_LITTLE_SYM x86_64_elf32_nacl_vec
8059fb19
RM		 7696#undef TARGET_LITTLE_NAME
7697#define TARGET_LITTLE_NAME "elf32-x86-64-nacl"
7698#undef elf32_bed
7699#define elf32_bed elf32_x86_64_nacl_bed
7700
7701#define bfd_elf32_bfd_link_hash_table_create \
7702 elf_x86_64_link_hash_table_create
8059fb19
RM		 7703#define bfd_elf32_bfd_reloc_type_lookup \
7704 elf_x86_64_reloc_type_lookup
7705#define bfd_elf32_bfd_reloc_name_lookup \
7706 elf_x86_64_reloc_name_lookup
7707#define bfd_elf32_mkobject \
7708 elf_x86_64_mkobject
b7365e5d
L		 7709#define bfd_elf32_get_synthetic_symtab \
7710 elf_x86_64_get_synthetic_symtab
8059fb19
RM		 7711
7712#undef elf_backend_object_p
7713#define elf_backend_object_p \
64b384e1 7714 elf32_x86_64_nacl_elf_object_p
8059fb19
RM		 7715
7716#undef elf_backend_bfd_from_remote_memory
7717#define elf_backend_bfd_from_remote_memory \
7718 _bfd_elf32_bfd_from_remote_memory
7719
7720#undef elf_backend_size_info
7721#define elf_backend_size_info \
7722 _bfd_elf32_size_info
7723
7724#include "elf32-target.h"
7725
7726/* Restore defaults. */
5a68afcf 7727#undef elf_backend_object_p
8059fb19 7728#define elf_backend_object_p elf64_x86_64_elf_object_p
5a68afcf
RM		 7729#undef elf_backend_bfd_from_remote_memory
7730#undef elf_backend_size_info
7731#undef elf_backend_modify_segment_map
7732#undef elf_backend_modify_program_headers
887badb3 7733#undef elf_backend_final_write_processing
8059fb19 7734
8a9036a4
L		 7735/* Intel L1OM support. */
7736
7737static bfd_boolean
7738elf64_l1om_elf_object_p (bfd *abfd)
7739{
7740 /* Set the right machine number for an L1OM elf64 file. */
7741 bfd_default_set_arch_mach (abfd, bfd_arch_l1om, bfd_mach_l1om);
7742 return TRUE;
7743}
7744
7745#undef TARGET_LITTLE_SYM
6d00b590 7746#define TARGET_LITTLE_SYM l1om_elf64_vec
8a9036a4
L		 7747#undef TARGET_LITTLE_NAME
7748#define TARGET_LITTLE_NAME "elf64-l1om"
7749#undef ELF_ARCH
7750#define ELF_ARCH bfd_arch_l1om
7751
7752#undef ELF_MACHINE_CODE
7753#define ELF_MACHINE_CODE EM_L1OM
7754
7755#undef ELF_OSABI
7756
7757#undef elf64_bed
7758#define elf64_bed elf64_l1om_bed
7759
7760#undef elf_backend_object_p
7761#define elf_backend_object_p elf64_l1om_elf_object_p
7762
8059fb19
RM		 7763/* Restore defaults. */
7764#undef ELF_MAXPAGESIZE
7765#undef ELF_MINPAGESIZE
7766#undef ELF_COMMONPAGESIZE
7767#define ELF_MAXPAGESIZE 0x200000
7768#define ELF_MINPAGESIZE 0x1000
7769#define ELF_COMMONPAGESIZE 0x1000
7770#undef elf_backend_plt_alignment
7771#define elf_backend_plt_alignment 4
7772#undef elf_backend_arch_data
7773#define elf_backend_arch_data &elf_x86_64_arch_bed
1a0c107f 7774
8a9036a4
L		 7775#include "elf64-target.h"
7776
7777/* FreeBSD L1OM support. */
7778
7779#undef TARGET_LITTLE_SYM
6d00b590 7780#define TARGET_LITTLE_SYM l1om_elf64_fbsd_vec
8a9036a4
L		 7781#undef TARGET_LITTLE_NAME
7782#define TARGET_LITTLE_NAME "elf64-l1om-freebsd"
7783
7784#undef ELF_OSABI
7785#define ELF_OSABI ELFOSABI_FREEBSD
7786
7787#undef elf64_bed
7788#define elf64_bed elf64_l1om_fbsd_bed
7789
8a9036a4 7790#include "elf64-target.h"
351f65ca 7791
7a9068fe
L		 7792/* Intel K1OM support. */
7793
7794static bfd_boolean
7795elf64_k1om_elf_object_p (bfd *abfd)
7796{
7797 /* Set the right machine number for an K1OM elf64 file. */
7798 bfd_default_set_arch_mach (abfd, bfd_arch_k1om, bfd_mach_k1om);
7799 return TRUE;
7800}
7801
7802#undef TARGET_LITTLE_SYM
6d00b590 7803#define TARGET_LITTLE_SYM k1om_elf64_vec
7a9068fe
L		 7804#undef TARGET_LITTLE_NAME
7805#define TARGET_LITTLE_NAME "elf64-k1om"
7806#undef ELF_ARCH
7807#define ELF_ARCH bfd_arch_k1om
7808
7809#undef ELF_MACHINE_CODE
7810#define ELF_MACHINE_CODE EM_K1OM
7811
7812#undef ELF_OSABI
7813
7814#undef elf64_bed
7815#define elf64_bed elf64_k1om_bed
7816
7817#undef elf_backend_object_p
7818#define elf_backend_object_p elf64_k1om_elf_object_p
7819
7820#undef elf_backend_static_tls_alignment
7821
7822#undef elf_backend_want_plt_sym
7823#define elf_backend_want_plt_sym 0
7824
7825#include "elf64-target.h"
7826
7827/* FreeBSD K1OM support. */
7828
7829#undef TARGET_LITTLE_SYM
6d00b590 7830#define TARGET_LITTLE_SYM k1om_elf64_fbsd_vec
7a9068fe
L		 7831#undef TARGET_LITTLE_NAME
7832#define TARGET_LITTLE_NAME "elf64-k1om-freebsd"
7833
7834#undef ELF_OSABI
7835#define ELF_OSABI ELFOSABI_FREEBSD
7836
7837#undef elf64_bed
7838#define elf64_bed elf64_k1om_fbsd_bed
7839
7840#include "elf64-target.h"
7841
351f65ca
L		 7842/* 32bit x86-64 support. */
7843
351f65ca 7844#undef TARGET_LITTLE_SYM
6d00b590 7845#define TARGET_LITTLE_SYM x86_64_elf32_vec
351f65ca
L		 7846#undef TARGET_LITTLE_NAME
7847#define TARGET_LITTLE_NAME "elf32-x86-64"
8059fb19 7848#undef elf32_bed
351f65ca
L		 7849
7850#undef ELF_ARCH
7851#define ELF_ARCH bfd_arch_i386
7852
7853#undef ELF_MACHINE_CODE
7854#define ELF_MACHINE_CODE EM_X86_64
7855
351f65ca
L		 7856#undef ELF_OSABI
7857
351f65ca
L		 7858#undef elf_backend_object_p
7859#define elf_backend_object_p \
7860 elf32_x86_64_elf_object_p
7861
7862#undef elf_backend_bfd_from_remote_memory
7863#define elf_backend_bfd_from_remote_memory \
7864 _bfd_elf32_bfd_from_remote_memory
7865
7866#undef elf_backend_size_info
7867#define elf_backend_size_info \
7868 _bfd_elf32_size_info
7869
7870#include "elf32-target.h"
GDB Binutils - Deliverables
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