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351f65ca 1/* X86-64 specific support for ELF
82704155 2 Copyright (C) 2000-2019 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
0afcef53 22#include "elfxx-x86.h"
5a68afcf 23#include "elf-nacl.h"
e41b3a13 24#include "dwarf2.h"
d7921315 25#include "libiberty.h"
8d88c4ca 26
56ceb5b5 27#include "opcode/i386.h"
8d88c4ca
NC		 28#include "elf/x86-64.h"
29
8fd79e71
L		 30#ifdef CORE_HEADER
31#include <stdarg.h>
32#include CORE_HEADER
33#endif
34
8d88c4ca
NC		 35/* In case we're on a 32-bit machine, construct a 64-bit "-1" value. */
36#define MINUS_ONE (~ (bfd_vma) 0)
37
351f65ca
L		 38/* Since both 32-bit and 64-bit x86-64 encode relocation type in the
39 identical manner, we use ELF32_R_TYPE instead of ELF64_R_TYPE to get
40 relocation type. We also use ELF_ST_TYPE instead of ELF64_ST_TYPE
41 since they are the same. */
42
8d88c4ca 43/* The relocation "howto" table. Order of fields:
7b81dfbb
AJ		 44 type, rightshift, size, bitsize, pc_relative, bitpos, complain_on_overflow,
45 special_function, name, partial_inplace, src_mask, dst_mask, pcrel_offset. */
70256ad8
AJ		 46static reloc_howto_type x86_64_elf_howto_table[] =
47{
6346d5ca 48 HOWTO(R_X86_64_NONE, 0, 3, 0, FALSE, 0, complain_overflow_dont,
b34976b6
AM		 49 bfd_elf_generic_reloc, "R_X86_64_NONE", FALSE, 0x00000000, 0x00000000,
50 FALSE),
51 HOWTO(R_X86_64_64, 0, 4, 64, FALSE, 0, complain_overflow_bitfield,
52 bfd_elf_generic_reloc, "R_X86_64_64", FALSE, MINUS_ONE, MINUS_ONE,
53 FALSE),
54 HOWTO(R_X86_64_PC32, 0, 2, 32, TRUE, 0, complain_overflow_signed,
55 bfd_elf_generic_reloc, "R_X86_64_PC32", FALSE, 0xffffffff, 0xffffffff,
56 TRUE),
57 HOWTO(R_X86_64_GOT32, 0, 2, 32, FALSE, 0, complain_overflow_signed,
58 bfd_elf_generic_reloc, "R_X86_64_GOT32", FALSE, 0xffffffff, 0xffffffff,
59 FALSE),
60 HOWTO(R_X86_64_PLT32, 0, 2, 32, TRUE, 0, complain_overflow_signed,
61 bfd_elf_generic_reloc, "R_X86_64_PLT32", FALSE, 0xffffffff, 0xffffffff,
62 TRUE),
63 HOWTO(R_X86_64_COPY, 0, 2, 32, FALSE, 0, complain_overflow_bitfield,
64 bfd_elf_generic_reloc, "R_X86_64_COPY", FALSE, 0xffffffff, 0xffffffff,
65 FALSE),
66 HOWTO(R_X86_64_GLOB_DAT, 0, 4, 64, FALSE, 0, complain_overflow_bitfield,
67 bfd_elf_generic_reloc, "R_X86_64_GLOB_DAT", FALSE, MINUS_ONE,
68 MINUS_ONE, FALSE),
69 HOWTO(R_X86_64_JUMP_SLOT, 0, 4, 64, FALSE, 0, complain_overflow_bitfield,
70 bfd_elf_generic_reloc, "R_X86_64_JUMP_SLOT", FALSE, MINUS_ONE,
71 MINUS_ONE, FALSE),
72 HOWTO(R_X86_64_RELATIVE, 0, 4, 64, FALSE, 0, complain_overflow_bitfield,
73 bfd_elf_generic_reloc, "R_X86_64_RELATIVE", FALSE, MINUS_ONE,
74 MINUS_ONE, FALSE),
75 HOWTO(R_X86_64_GOTPCREL, 0, 2, 32, TRUE, 0, complain_overflow_signed,
76 bfd_elf_generic_reloc, "R_X86_64_GOTPCREL", FALSE, 0xffffffff,
77 0xffffffff, TRUE),
78 HOWTO(R_X86_64_32, 0, 2, 32, FALSE, 0, complain_overflow_unsigned,
79 bfd_elf_generic_reloc, "R_X86_64_32", FALSE, 0xffffffff, 0xffffffff,
80 FALSE),
81 HOWTO(R_X86_64_32S, 0, 2, 32, FALSE, 0, complain_overflow_signed,
82 bfd_elf_generic_reloc, "R_X86_64_32S", FALSE, 0xffffffff, 0xffffffff,
83 FALSE),
84 HOWTO(R_X86_64_16, 0, 1, 16, FALSE, 0, complain_overflow_bitfield,
85 bfd_elf_generic_reloc, "R_X86_64_16", FALSE, 0xffff, 0xffff, FALSE),
b0360d8c 86 HOWTO(R_X86_64_PC16,0, 1, 16, TRUE, 0, complain_overflow_bitfield,
b34976b6 87 bfd_elf_generic_reloc, "R_X86_64_PC16", FALSE, 0xffff, 0xffff, TRUE),
ac2aa337 88 HOWTO(R_X86_64_8, 0, 0, 8, FALSE, 0, complain_overflow_bitfield,
b34976b6
AM		 89 bfd_elf_generic_reloc, "R_X86_64_8", FALSE, 0xff, 0xff, FALSE),
90 HOWTO(R_X86_64_PC8, 0, 0, 8, TRUE, 0, complain_overflow_signed,
91 bfd_elf_generic_reloc, "R_X86_64_PC8", FALSE, 0xff, 0xff, TRUE),
92 HOWTO(R_X86_64_DTPMOD64, 0, 4, 64, FALSE, 0, complain_overflow_bitfield,
93 bfd_elf_generic_reloc, "R_X86_64_DTPMOD64", FALSE, MINUS_ONE,
94 MINUS_ONE, FALSE),
95 HOWTO(R_X86_64_DTPOFF64, 0, 4, 64, FALSE, 0, complain_overflow_bitfield,
96 bfd_elf_generic_reloc, "R_X86_64_DTPOFF64", FALSE, MINUS_ONE,
97 MINUS_ONE, FALSE),
98 HOWTO(R_X86_64_TPOFF64, 0, 4, 64, FALSE, 0, complain_overflow_bitfield,
99 bfd_elf_generic_reloc, "R_X86_64_TPOFF64", FALSE, MINUS_ONE,
100 MINUS_ONE, FALSE),
101 HOWTO(R_X86_64_TLSGD, 0, 2, 32, TRUE, 0, complain_overflow_signed,
102 bfd_elf_generic_reloc, "R_X86_64_TLSGD", FALSE, 0xffffffff,
103 0xffffffff, TRUE),
104 HOWTO(R_X86_64_TLSLD, 0, 2, 32, TRUE, 0, complain_overflow_signed,
105 bfd_elf_generic_reloc, "R_X86_64_TLSLD", FALSE, 0xffffffff,
106 0xffffffff, TRUE),
ac2aa337 107 HOWTO(R_X86_64_DTPOFF32, 0, 2, 32, FALSE, 0, complain_overflow_signed,
b34976b6
AM		 108 bfd_elf_generic_reloc, "R_X86_64_DTPOFF32", FALSE, 0xffffffff,
109 0xffffffff, FALSE),
110 HOWTO(R_X86_64_GOTTPOFF, 0, 2, 32, TRUE, 0, complain_overflow_signed,
111 bfd_elf_generic_reloc, "R_X86_64_GOTTPOFF", FALSE, 0xffffffff,
112 0xffffffff, TRUE),
113 HOWTO(R_X86_64_TPOFF32, 0, 2, 32, FALSE, 0, complain_overflow_signed,
114 bfd_elf_generic_reloc, "R_X86_64_TPOFF32", FALSE, 0xffffffff,
115 0xffffffff, FALSE),
d6ab8113
JB		 116 HOWTO(R_X86_64_PC64, 0, 4, 64, TRUE, 0, complain_overflow_bitfield,
117 bfd_elf_generic_reloc, "R_X86_64_PC64", FALSE, MINUS_ONE, MINUS_ONE,
118 TRUE),
119 HOWTO(R_X86_64_GOTOFF64, 0, 4, 64, FALSE, 0, complain_overflow_bitfield,
120 bfd_elf_generic_reloc, "R_X86_64_GOTOFF64",
121 FALSE, MINUS_ONE, MINUS_ONE, FALSE),
122 HOWTO(R_X86_64_GOTPC32, 0, 2, 32, TRUE, 0, complain_overflow_signed,
123 bfd_elf_generic_reloc, "R_X86_64_GOTPC32",
124 FALSE, 0xffffffff, 0xffffffff, TRUE),
7b81dfbb
AJ		 125 HOWTO(R_X86_64_GOT64, 0, 4, 64, FALSE, 0, complain_overflow_signed,
126 bfd_elf_generic_reloc, "R_X86_64_GOT64", FALSE, MINUS_ONE, MINUS_ONE,
127 FALSE),
128 HOWTO(R_X86_64_GOTPCREL64, 0, 4, 64, TRUE, 0, complain_overflow_signed,
129 bfd_elf_generic_reloc, "R_X86_64_GOTPCREL64", FALSE, MINUS_ONE,
130 MINUS_ONE, TRUE),
131 HOWTO(R_X86_64_GOTPC64, 0, 4, 64, TRUE, 0, complain_overflow_signed,
132 bfd_elf_generic_reloc, "R_X86_64_GOTPC64",
133 FALSE, MINUS_ONE, MINUS_ONE, TRUE),
134 HOWTO(R_X86_64_GOTPLT64, 0, 4, 64, FALSE, 0, complain_overflow_signed,
135 bfd_elf_generic_reloc, "R_X86_64_GOTPLT64", FALSE, MINUS_ONE,
136 MINUS_ONE, FALSE),
137 HOWTO(R_X86_64_PLTOFF64, 0, 4, 64, FALSE, 0, complain_overflow_signed,
138 bfd_elf_generic_reloc, "R_X86_64_PLTOFF64", FALSE, MINUS_ONE,
139 MINUS_ONE, FALSE),
1788fc08
L		 140 HOWTO(R_X86_64_SIZE32, 0, 2, 32, FALSE, 0, complain_overflow_unsigned,
141 bfd_elf_generic_reloc, "R_X86_64_SIZE32", FALSE, 0xffffffff, 0xffffffff,
142 FALSE),
143 HOWTO(R_X86_64_SIZE64, 0, 4, 64, FALSE, 0, complain_overflow_unsigned,
144 bfd_elf_generic_reloc, "R_X86_64_SIZE64", FALSE, MINUS_ONE, MINUS_ONE,
145 FALSE),
67a4f2b7
AO		 146 HOWTO(R_X86_64_GOTPC32_TLSDESC, 0, 2, 32, TRUE, 0,
147 complain_overflow_bitfield, bfd_elf_generic_reloc,
148 "R_X86_64_GOTPC32_TLSDESC",
149 FALSE, 0xffffffff, 0xffffffff, TRUE),
150 HOWTO(R_X86_64_TLSDESC_CALL, 0, 0, 0, FALSE, 0,
151 complain_overflow_dont, bfd_elf_generic_reloc,
152 "R_X86_64_TLSDESC_CALL",
153 FALSE, 0, 0, FALSE),
154 HOWTO(R_X86_64_TLSDESC, 0, 4, 64, FALSE, 0,
155 complain_overflow_bitfield, bfd_elf_generic_reloc,
156 "R_X86_64_TLSDESC",
157 FALSE, MINUS_ONE, MINUS_ONE, FALSE),
cbe950e9
L		 158 HOWTO(R_X86_64_IRELATIVE, 0, 4, 64, FALSE, 0, complain_overflow_bitfield,
159 bfd_elf_generic_reloc, "R_X86_64_IRELATIVE", FALSE, MINUS_ONE,
160 MINUS_ONE, FALSE),
64d25c44
L		 161 HOWTO(R_X86_64_RELATIVE64, 0, 4, 64, FALSE, 0, complain_overflow_bitfield,
162 bfd_elf_generic_reloc, "R_X86_64_RELATIVE64", FALSE, MINUS_ONE,
163 MINUS_ONE, FALSE),
c3320543
L		 164 HOWTO(R_X86_64_PC32_BND, 0, 2, 32, TRUE, 0, complain_overflow_signed,
165 bfd_elf_generic_reloc, "R_X86_64_PC32_BND", FALSE, 0xffffffff, 0xffffffff,
166 TRUE),
167 HOWTO(R_X86_64_PLT32_BND, 0, 2, 32, TRUE, 0, complain_overflow_signed,
168 bfd_elf_generic_reloc, "R_X86_64_PLT32_BND", FALSE, 0xffffffff, 0xffffffff,
169 TRUE),
56ceb5b5
L		 170 HOWTO(R_X86_64_GOTPCRELX, 0, 2, 32, TRUE, 0, complain_overflow_signed,
171 bfd_elf_generic_reloc, "R_X86_64_GOTPCRELX", FALSE, 0xffffffff,
172 0xffffffff, TRUE),
173 HOWTO(R_X86_64_REX_GOTPCRELX, 0, 2, 32, TRUE, 0, complain_overflow_signed,
174 bfd_elf_generic_reloc, "R_X86_64_REX_GOTPCRELX", FALSE, 0xffffffff,
175 0xffffffff, TRUE),
fe4770f4 176
a33d77bc
JB		 177 /* We have a gap in the reloc numbers here.
178 R_X86_64_standard counts the number up to this point, and
179 R_X86_64_vt_offset is the value to subtract from a reloc type of
180 R_X86_64_GNU_VT* to form an index into this table. */
56ceb5b5 181#define R_X86_64_standard (R_X86_64_REX_GOTPCRELX + 1)
a33d77bc
JB		 182#define R_X86_64_vt_offset (R_X86_64_GNU_VTINHERIT - R_X86_64_standard)
183
fe4770f4 184/* GNU extension to record C++ vtable hierarchy. */
b34976b6
AM		 185 HOWTO (R_X86_64_GNU_VTINHERIT, 0, 4, 0, FALSE, 0, complain_overflow_dont,
186 NULL, "R_X86_64_GNU_VTINHERIT", FALSE, 0, 0, FALSE),
fe4770f4
AJ		 187
188/* GNU extension to record C++ vtable member usage. */
b34976b6
AM		 189 HOWTO (R_X86_64_GNU_VTENTRY, 0, 4, 0, FALSE, 0, complain_overflow_dont,
190 _bfd_elf_rel_vtable_reloc_fn, "R_X86_64_GNU_VTENTRY", FALSE, 0, 0,
d7921315
L		 191 FALSE),
192
193/* Use complain_overflow_bitfield on R_X86_64_32 for x32. */
194 HOWTO(R_X86_64_32, 0, 2, 32, FALSE, 0, complain_overflow_bitfield,
195 bfd_elf_generic_reloc, "R_X86_64_32", FALSE, 0xffffffff, 0xffffffff,
196 FALSE)
8d88c4ca
NC		 197};
198
78984959
L		 199/* Set if a relocation is converted from a GOTPCREL relocation. */
200#define R_X86_64_converted_reloc_bit (1 << 7)
201
daf1c414 202#define X86_PCREL_TYPE_P(TYPE) \
d8045f23
NC		 203 ( ((TYPE) == R_X86_64_PC8) \
204 || ((TYPE) == R_X86_64_PC16) \
205 || ((TYPE) == R_X86_64_PC32) \
c3320543 206 || ((TYPE) == R_X86_64_PC32_BND) \
d8045f23
NC		 207 || ((TYPE) == R_X86_64_PC64))
208
aebcc8ff
L		 209#define X86_SIZE_TYPE_P(TYPE) \
210 ((TYPE) == R_X86_64_SIZE32 || (TYPE) == R_X86_64_SIZE64)
211
8d88c4ca 212/* Map BFD relocs to the x86_64 elf relocs. */
70256ad8
AJ		 213struct elf_reloc_map
214{
8d88c4ca
NC		 215 bfd_reloc_code_real_type bfd_reloc_val;
216 unsigned char elf_reloc_val;
217};
218
dc810e39 219static const struct elf_reloc_map x86_64_reloc_map[] =
8d88c4ca 220{
70256ad8
AJ		 221 { BFD_RELOC_NONE, R_X86_64_NONE, },
222 { BFD_RELOC_64, R_X86_64_64, },
223 { BFD_RELOC_32_PCREL, R_X86_64_PC32, },
224 { BFD_RELOC_X86_64_GOT32, R_X86_64_GOT32,},
225 { BFD_RELOC_X86_64_PLT32, R_X86_64_PLT32,},
226 { BFD_RELOC_X86_64_COPY, R_X86_64_COPY, },
227 { BFD_RELOC_X86_64_GLOB_DAT, R_X86_64_GLOB_DAT, },
228 { BFD_RELOC_X86_64_JUMP_SLOT, R_X86_64_JUMP_SLOT, },
229 { BFD_RELOC_X86_64_RELATIVE, R_X86_64_RELATIVE, },
230 { BFD_RELOC_X86_64_GOTPCREL, R_X86_64_GOTPCREL, },
231 { BFD_RELOC_32, R_X86_64_32, },
232 { BFD_RELOC_X86_64_32S, R_X86_64_32S, },
233 { BFD_RELOC_16, R_X86_64_16, },
234 { BFD_RELOC_16_PCREL, R_X86_64_PC16, },
235 { BFD_RELOC_8, R_X86_64_8, },
236 { BFD_RELOC_8_PCREL, R_X86_64_PC8, },
bffbf940
JJ		 237 { BFD_RELOC_X86_64_DTPMOD64, R_X86_64_DTPMOD64, },
238 { BFD_RELOC_X86_64_DTPOFF64, R_X86_64_DTPOFF64, },
239 { BFD_RELOC_X86_64_TPOFF64, R_X86_64_TPOFF64, },
240 { BFD_RELOC_X86_64_TLSGD, R_X86_64_TLSGD, },
241 { BFD_RELOC_X86_64_TLSLD, R_X86_64_TLSLD, },
242 { BFD_RELOC_X86_64_DTPOFF32, R_X86_64_DTPOFF32, },
243 { BFD_RELOC_X86_64_GOTTPOFF, R_X86_64_GOTTPOFF, },
244 { BFD_RELOC_X86_64_TPOFF32, R_X86_64_TPOFF32, },
d6ab8113
JB		 245 { BFD_RELOC_64_PCREL, R_X86_64_PC64, },
246 { BFD_RELOC_X86_64_GOTOFF64, R_X86_64_GOTOFF64, },
247 { BFD_RELOC_X86_64_GOTPC32, R_X86_64_GOTPC32, },
7b81dfbb
AJ		 248 { BFD_RELOC_X86_64_GOT64, R_X86_64_GOT64, },
249 { BFD_RELOC_X86_64_GOTPCREL64,R_X86_64_GOTPCREL64, },
250 { BFD_RELOC_X86_64_GOTPC64, R_X86_64_GOTPC64, },
251 { BFD_RELOC_X86_64_GOTPLT64, R_X86_64_GOTPLT64, },
252 { BFD_RELOC_X86_64_PLTOFF64, R_X86_64_PLTOFF64, },
1788fc08
L		 253 { BFD_RELOC_SIZE32, R_X86_64_SIZE32, },
254 { BFD_RELOC_SIZE64, R_X86_64_SIZE64, },
67a4f2b7
AO		 255 { BFD_RELOC_X86_64_GOTPC32_TLSDESC, R_X86_64_GOTPC32_TLSDESC, },
256 { BFD_RELOC_X86_64_TLSDESC_CALL, R_X86_64_TLSDESC_CALL, },
257 { BFD_RELOC_X86_64_TLSDESC, R_X86_64_TLSDESC, },
cbe950e9 258 { BFD_RELOC_X86_64_IRELATIVE, R_X86_64_IRELATIVE, },
56ceb5b5
L		 259 { BFD_RELOC_X86_64_PC32_BND, R_X86_64_PC32_BND, },
260 { BFD_RELOC_X86_64_PLT32_BND, R_X86_64_PLT32_BND, },
261 { BFD_RELOC_X86_64_GOTPCRELX, R_X86_64_GOTPCRELX, },
262 { BFD_RELOC_X86_64_REX_GOTPCRELX, R_X86_64_REX_GOTPCRELX, },
fe4770f4
AJ		 263 { BFD_RELOC_VTABLE_INHERIT, R_X86_64_GNU_VTINHERIT, },
264 { BFD_RELOC_VTABLE_ENTRY, R_X86_64_GNU_VTENTRY, },
8d88c4ca
NC		 265};
266
67a4f2b7 267static reloc_howto_type *
351f65ca 268elf_x86_64_rtype_to_howto (bfd *abfd, unsigned r_type)
67a4f2b7
AO		 269{
270 unsigned i;
271
d7921315
L		 272 if (r_type == (unsigned int) R_X86_64_32)
273 {
274 if (ABI_64_P (abfd))
275 i = r_type;
276 else
277 i = ARRAY_SIZE (x86_64_elf_howto_table) - 1;
278 }
279 else if (r_type < (unsigned int) R_X86_64_GNU_VTINHERIT
280 || r_type >= (unsigned int) R_X86_64_max)
67a4f2b7
AO		 281 {
282 if (r_type >= (unsigned int) R_X86_64_standard)
283 {
695344c0 284 /* xgettext:c-format */
0aa13fee
AM		 285 _bfd_error_handler (_("%pB: unsupported relocation type %#x"),
286 abfd, r_type);
f3185997
NC		 287 bfd_set_error (bfd_error_bad_value);
288 return NULL;
67a4f2b7
AO		 289 }
290 i = r_type;
291 }
292 else
293 i = r_type - (unsigned int) R_X86_64_vt_offset;
294 BFD_ASSERT (x86_64_elf_howto_table[i].type == r_type);
295 return &x86_64_elf_howto_table[i];
296}
8d88c4ca
NC		 297
298/* Given a BFD reloc type, return a HOWTO structure. */
299static reloc_howto_type *
351f65ca
L		 300elf_x86_64_reloc_type_lookup (bfd *abfd,
301 bfd_reloc_code_real_type code)
8d88c4ca
NC		 302{
303 unsigned int i;
27482721 304
8d88c4ca
NC		 305 for (i = 0; i < sizeof (x86_64_reloc_map) / sizeof (struct elf_reloc_map);
306 i++)
307 {
308 if (x86_64_reloc_map[i].bfd_reloc_val == code)
351f65ca
L		 309 return elf_x86_64_rtype_to_howto (abfd,
310 x86_64_reloc_map[i].elf_reloc_val);
8d88c4ca 311 }
5860e3f8 312 return NULL;
8d88c4ca
NC		 313}
314
157090f7 315static reloc_howto_type *
d7921315 316elf_x86_64_reloc_name_lookup (bfd *abfd,
351f65ca 317 const char *r_name)
157090f7
AM		 318{
319 unsigned int i;
320
d7921315
L		 321 if (!ABI_64_P (abfd) && strcasecmp (r_name, "R_X86_64_32") == 0)
322 {
323 /* Get x32 R_X86_64_32. */
324 reloc_howto_type *reloc
325 = &x86_64_elf_howto_table[ARRAY_SIZE (x86_64_elf_howto_table) - 1];
326 BFD_ASSERT (reloc->type == (unsigned int) R_X86_64_32);
327 return reloc;
328 }
329
330 for (i = 0; i < ARRAY_SIZE (x86_64_elf_howto_table); i++)
157090f7
AM		 331 if (x86_64_elf_howto_table[i].name != NULL
332 && strcasecmp (x86_64_elf_howto_table[i].name, r_name) == 0)
333 return &x86_64_elf_howto_table[i];
334
335 return NULL;
336}
337
8d88c4ca 338/* Given an x86_64 ELF reloc type, fill in an arelent structure. */
8da6118f 339
f3185997
NC		 340static bfd_boolean
341elf_x86_64_info_to_howto (bfd *abfd, arelent *cache_ptr,
351f65ca 342 Elf_Internal_Rela *dst)
8d88c4ca 343{
67a4f2b7 344 unsigned r_type;
8d88c4ca 345
351f65ca
L		 346 r_type = ELF32_R_TYPE (dst->r_info);
347 cache_ptr->howto = elf_x86_64_rtype_to_howto (abfd, r_type);
f3185997
NC		 348 if (cache_ptr->howto == NULL)
349 return FALSE;
262c0a87 350 BFD_ASSERT (r_type == cache_ptr->howto->type || cache_ptr->howto->type == R_X86_64_NONE);
f3185997 351 return TRUE;
8d88c4ca 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
602f1657
AM		 442# if GCC_VERSION >= 8000
443# pragma GCC diagnostic push
444# pragma GCC diagnostic ignored "-Wstringop-truncation"
445# endif
8fd79e71
L		 446static char *
447elf_x86_64_write_core_note (bfd *abfd, char *buf, int *bufsiz,
448 int note_type, ...)
449{
450 const struct elf_backend_data *bed = get_elf_backend_data (abfd);
8fd79e71
L		 451 va_list ap;
452 const char *fname, *psargs;
453 long pid;
454 int cursig;
455 const void *gregs;
456
457 switch (note_type)
458 {
459 default:
460 return NULL;
461
462 case NT_PRPSINFO:
463 va_start (ap, note_type);
464 fname = va_arg (ap, const char *);
465 psargs = va_arg (ap, const char *);
466 va_end (ap);
467
468 if (bed->s->elfclass == ELFCLASS32)
469 {
470 prpsinfo32_t data;
471 memset (&data, 0, sizeof (data));
472 strncpy (data.pr_fname, fname, sizeof (data.pr_fname));
473 strncpy (data.pr_psargs, psargs, sizeof (data.pr_psargs));
e85c6a70
JK		 474 return elfcore_write_note (abfd, buf, bufsiz, "CORE", note_type,
475 &data, sizeof (data));
8fd79e71
L		 476 }
477 else
478 {
b1bd052d 479 prpsinfo64_t data;
8fd79e71
L		 480 memset (&data, 0, sizeof (data));
481 strncpy (data.pr_fname, fname, sizeof (data.pr_fname));
482 strncpy (data.pr_psargs, psargs, sizeof (data.pr_psargs));
e85c6a70
JK		 483 return elfcore_write_note (abfd, buf, bufsiz, "CORE", note_type,
484 &data, sizeof (data));
8fd79e71 485 }
e85c6a70 486 /* NOTREACHED */
8fd79e71
L		 487
488 case NT_PRSTATUS:
489 va_start (ap, note_type);
490 pid = va_arg (ap, long);
491 cursig = va_arg (ap, int);
492 gregs = va_arg (ap, const void *);
493 va_end (ap);
494
495 if (bed->s->elfclass == ELFCLASS32)
496 {
497 if (bed->elf_machine_code == EM_X86_64)
498 {
499 prstatusx32_t prstat;
500 memset (&prstat, 0, sizeof (prstat));
501 prstat.pr_pid = pid;
502 prstat.pr_cursig = cursig;
503 memcpy (&prstat.pr_reg, gregs, sizeof (prstat.pr_reg));
e85c6a70
JK		 504 return elfcore_write_note (abfd, buf, bufsiz, "CORE", note_type,
505 &prstat, sizeof (prstat));
8fd79e71
L		 506 }
507 else
508 {
509 prstatus32_t prstat;
510 memset (&prstat, 0, sizeof (prstat));
511 prstat.pr_pid = pid;
512 prstat.pr_cursig = cursig;
513 memcpy (&prstat.pr_reg, gregs, sizeof (prstat.pr_reg));
e85c6a70
JK		 514 return elfcore_write_note (abfd, buf, bufsiz, "CORE", note_type,
515 &prstat, sizeof (prstat));
8fd79e71
L		 516 }
517 }
518 else
519 {
b1bd052d 520 prstatus64_t prstat;
8fd79e71
L		 521 memset (&prstat, 0, sizeof (prstat));
522 prstat.pr_pid = pid;
523 prstat.pr_cursig = cursig;
524 memcpy (&prstat.pr_reg, gregs, sizeof (prstat.pr_reg));
e85c6a70
JK		 525 return elfcore_write_note (abfd, buf, bufsiz, "CORE", note_type,
526 &prstat, sizeof (prstat));
8fd79e71 527 }
8fd79e71 528 }
e85c6a70 529 /* NOTREACHED */
8fd79e71 530}
602f1657
AM		 531# if GCC_VERSION >= 8000
532# pragma GCC diagnostic pop
533# endif
8fd79e71 534#endif
3bab7989 535\f
407443a3 536/* Functions for the x86-64 ELF linker. */
70256ad8 537
70256ad8
AJ		 538/* The size in bytes of an entry in the global offset table. */
539
540#define GOT_ENTRY_SIZE 8
8d88c4ca 541
38b12349 542/* The size in bytes of an entry in the lazy procedure linkage table. */
8d88c4ca 543
38b12349 544#define LAZY_PLT_ENTRY_SIZE 16
70256ad8 545
38b12349
L		 546/* The size in bytes of an entry in the non-lazy procedure linkage
547 table. */
70256ad8 548
38b12349
L		 549#define NON_LAZY_PLT_ENTRY_SIZE 8
550
551/* The first entry in a lazy procedure linkage table looks like this.
552 See the SVR4 ABI i386 supplement and the x86-64 ABI to see how this
553 works. */
554
555static const bfd_byte elf_x86_64_lazy_plt0_entry[LAZY_PLT_ENTRY_SIZE] =
70256ad8 556{
653165cc
AJ		 557 0xff, 0x35, 8, 0, 0, 0, /* pushq GOT+8(%rip) */
558 0xff, 0x25, 16, 0, 0, 0, /* jmpq *GOT+16(%rip) */
10efb593 559 0x0f, 0x1f, 0x40, 0x00 /* nopl 0(%rax) */
70256ad8
AJ		 560};
561
38b12349 562/* Subsequent entries in a lazy procedure linkage table look like this. */
70256ad8 563
38b12349 564static const bfd_byte elf_x86_64_lazy_plt_entry[LAZY_PLT_ENTRY_SIZE] =
70256ad8 565{
653165cc 566 0xff, 0x25, /* jmpq *name@GOTPC(%rip) */
407443a3 567 0, 0, 0, 0, /* replaced with offset to this symbol in .got. */
653165cc 568 0x68, /* pushq immediate */
70256ad8
AJ		 569 0, 0, 0, 0, /* replaced with index into relocation table. */
570 0xe9, /* jmp relative */
571 0, 0, 0, 0 /* replaced with offset to start of .plt0. */
572};
573
38b12349 574/* The first entry in a lazy procedure linkage table with BND prefix
0ff2b86e
L		 575 like this. */
576
38b12349 577static const bfd_byte elf_x86_64_lazy_bnd_plt0_entry[LAZY_PLT_ENTRY_SIZE] =
0ff2b86e 578{
07d6d2b8 579 0xff, 0x35, 8, 0, 0, 0, /* pushq GOT+8(%rip) */
0ff2b86e 580 0xf2, 0xff, 0x25, 16, 0, 0, 0, /* bnd jmpq *GOT+16(%rip) */
07d6d2b8 581 0x0f, 0x1f, 0 /* nopl (%rax) */
0ff2b86e
L		 582};
583
38b12349
L		 584/* Subsequent entries for branches with BND prefx in a lazy procedure
585 linkage table look like this. */
0ff2b86e 586
38b12349 587static const bfd_byte elf_x86_64_lazy_bnd_plt_entry[LAZY_PLT_ENTRY_SIZE] =
0ff2b86e 588{
07d6d2b8
AM		 589 0x68, 0, 0, 0, 0, /* pushq immediate */
590 0xf2, 0xe9, 0, 0, 0, 0, /* bnd jmpq relative */
591 0x0f, 0x1f, 0x44, 0, 0 /* nopl 0(%rax,%rax,1) */
0ff2b86e
L		 592};
593
ee2fdd6f
L		 594/* The first entry in the IBT-enabled lazy procedure linkage table is the
595 the same as the lazy PLT with BND prefix so that bound registers are
596 preserved when control is passed to dynamic linker. Subsequent
597 entries for a IBT-enabled lazy procedure linkage table look like
598 this. */
599
600static const bfd_byte elf_x86_64_lazy_ibt_plt_entry[LAZY_PLT_ENTRY_SIZE] =
601{
07d6d2b8
AM		 602 0xf3, 0x0f, 0x1e, 0xfa, /* endbr64 */
603 0x68, 0, 0, 0, 0, /* pushq immediate */
604 0xf2, 0xe9, 0, 0, 0, 0, /* bnd jmpq relative */
605 0x90 /* nop */
ee2fdd6f
L		 606};
607
608/* The first entry in the x32 IBT-enabled lazy procedure linkage table
de194d85 609 is the same as the normal lazy PLT. Subsequent entries for an
ee2fdd6f
L		 610 x32 IBT-enabled lazy procedure linkage table look like this. */
611
612static const bfd_byte elf_x32_lazy_ibt_plt_entry[LAZY_PLT_ENTRY_SIZE] =
613{
07d6d2b8
AM		 614 0xf3, 0x0f, 0x1e, 0xfa, /* endbr64 */
615 0x68, 0, 0, 0, 0, /* pushq immediate */
616 0xe9, 0, 0, 0, 0, /* jmpq relative */
617 0x66, 0x90 /* xchg %ax,%ax */
ee2fdd6f
L		 618};
619
38b12349 620/* Entries in the non-lazey procedure linkage table look like this. */
0ff2b86e 621
38b12349 622static const bfd_byte elf_x86_64_non_lazy_plt_entry[NON_LAZY_PLT_ENTRY_SIZE] =
0ff2b86e 623{
07d6d2b8
AM		 624 0xff, 0x25, /* jmpq *name@GOTPC(%rip) */
625 0, 0, 0, 0, /* replaced with offset to this symbol in .got. */
626 0x66, 0x90 /* xchg %ax,%ax */
0ff2b86e
L		 627};
628
38b12349
L		 629/* Entries for branches with BND prefix in the non-lazey procedure
630 linkage table look like this. */
0ff2b86e 631
38b12349 632static const bfd_byte elf_x86_64_non_lazy_bnd_plt_entry[NON_LAZY_PLT_ENTRY_SIZE] =
0ff2b86e 633{
07d6d2b8
AM		 634 0xf2, 0xff, 0x25, /* bnd jmpq *name@GOTPC(%rip) */
635 0, 0, 0, 0, /* replaced with offset to this symbol in .got. */
636 0x90 /* nop */
0ff2b86e
L		 637};
638
ee2fdd6f
L		 639/* Entries for branches with IBT-enabled in the non-lazey procedure
640 linkage table look like this. They have the same size as the lazy
641 PLT entry. */
642
643static const bfd_byte elf_x86_64_non_lazy_ibt_plt_entry[LAZY_PLT_ENTRY_SIZE] =
644{
07d6d2b8
AM		 645 0xf3, 0x0f, 0x1e, 0xfa, /* endbr64 */
646 0xf2, 0xff, 0x25, /* bnd jmpq *name@GOTPC(%rip) */
ee2fdd6f 647 0, 0, 0, 0, /* replaced with offset to this symbol in .got. */
07d6d2b8 648 0x0f, 0x1f, 0x44, 0x00, 0x00 /* nopl 0x0(%rax,%rax,1) */
ee2fdd6f
L		 649};
650
651/* Entries for branches with IBT-enabled in the x32 non-lazey procedure
652 linkage table look like this. They have the same size as the lazy
653 PLT entry. */
654
655static const bfd_byte elf_x32_non_lazy_ibt_plt_entry[LAZY_PLT_ENTRY_SIZE] =
656{
07d6d2b8
AM		 657 0xf3, 0x0f, 0x1e, 0xfa, /* endbr64 */
658 0xff, 0x25, /* jmpq *name@GOTPC(%rip) */
ee2fdd6f
L		 659 0, 0, 0, 0, /* replaced with offset to this symbol in .got. */
660 0x66, 0x0f, 0x1f, 0x44, 0x00, 0x00 /* nopw 0x0(%rax,%rax,1) */
661};
662
92e68c1d
L		 663/* The TLSDESC entry in a lazy procedure linkage table. */
664static const bfd_byte elf_x86_64_tlsdesc_plt_entry[LAZY_PLT_ENTRY_SIZE] =
665{
666 0xf3, 0x0f, 0x1e, 0xfa, /* endbr64 */
667 0xff, 0x35, 8, 0, 0, 0, /* pushq GOT+8(%rip) */
668 0xff, 0x25, 16, 0, 0, 0 /* jmpq *GOT+TDG(%rip) */
669};
670
38b12349 671/* .eh_frame covering the lazy .plt section. */
e41b3a13 672
38b12349 673static const bfd_byte elf_x86_64_eh_frame_lazy_plt[] =
e41b3a13 674{
e41b3a13
JJ		 675 PLT_CIE_LENGTH, 0, 0, 0, /* CIE length */
676 0, 0, 0, 0, /* CIE ID */
677 1, /* CIE version */
678 'z', 'R', 0, /* Augmentation string */
679 1, /* Code alignment factor */
680 0x78, /* Data alignment factor */
681 16, /* Return address column */
682 1, /* Augmentation size */
683 DW_EH_PE_pcrel | DW_EH_PE_sdata4, /* FDE encoding */
684 DW_CFA_def_cfa, 7, 8, /* DW_CFA_def_cfa: r7 (rsp) ofs 8 */
685 DW_CFA_offset + 16, 1, /* DW_CFA_offset: r16 (rip) at cfa-8 */
686 DW_CFA_nop, DW_CFA_nop,
687
688 PLT_FDE_LENGTH, 0, 0, 0, /* FDE length */
689 PLT_CIE_LENGTH + 8, 0, 0, 0, /* CIE pointer */
690 0, 0, 0, 0, /* R_X86_64_PC32 .plt goes here */
691 0, 0, 0, 0, /* .plt size goes here */
692 0, /* Augmentation size */
693 DW_CFA_def_cfa_offset, 16, /* DW_CFA_def_cfa_offset: 16 */
694 DW_CFA_advance_loc + 6, /* DW_CFA_advance_loc: 6 to __PLT__+6 */
695 DW_CFA_def_cfa_offset, 24, /* DW_CFA_def_cfa_offset: 24 */
696 DW_CFA_advance_loc + 10, /* DW_CFA_advance_loc: 10 to __PLT__+16 */
697 DW_CFA_def_cfa_expression, /* DW_CFA_def_cfa_expression */
698 11, /* Block length */
699 DW_OP_breg7, 8, /* DW_OP_breg7 (rsp): 8 */
700 DW_OP_breg16, 0, /* DW_OP_breg16 (rip): 0 */
701 DW_OP_lit15, DW_OP_and, DW_OP_lit11, DW_OP_ge,
702 DW_OP_lit3, DW_OP_shl, DW_OP_plus,
703 DW_CFA_nop, DW_CFA_nop, DW_CFA_nop, DW_CFA_nop
704};
705
38b12349 706/* .eh_frame covering the lazy BND .plt section. */
9e659176 707
38b12349 708static const bfd_byte elf_x86_64_eh_frame_lazy_bnd_plt[] =
9e659176
L		 709{
710 PLT_CIE_LENGTH, 0, 0, 0, /* CIE length */
711 0, 0, 0, 0, /* CIE ID */
712 1, /* CIE version */
713 'z', 'R', 0, /* Augmentation string */
714 1, /* Code alignment factor */
715 0x78, /* Data alignment factor */
716 16, /* Return address column */
717 1, /* Augmentation size */
718 DW_EH_PE_pcrel | DW_EH_PE_sdata4, /* FDE encoding */
719 DW_CFA_def_cfa, 7, 8, /* DW_CFA_def_cfa: r7 (rsp) ofs 8 */
720 DW_CFA_offset + 16, 1, /* DW_CFA_offset: r16 (rip) at cfa-8 */
721 DW_CFA_nop, DW_CFA_nop,
722
723 PLT_FDE_LENGTH, 0, 0, 0, /* FDE length */
724 PLT_CIE_LENGTH + 8, 0, 0, 0, /* CIE pointer */
725 0, 0, 0, 0, /* R_X86_64_PC32 .plt goes here */
726 0, 0, 0, 0, /* .plt size goes here */
727 0, /* Augmentation size */
728 DW_CFA_def_cfa_offset, 16, /* DW_CFA_def_cfa_offset: 16 */
729 DW_CFA_advance_loc + 6, /* DW_CFA_advance_loc: 6 to __PLT__+6 */
730 DW_CFA_def_cfa_offset, 24, /* DW_CFA_def_cfa_offset: 24 */
731 DW_CFA_advance_loc + 10, /* DW_CFA_advance_loc: 10 to __PLT__+16 */
732 DW_CFA_def_cfa_expression, /* DW_CFA_def_cfa_expression */
733 11, /* Block length */
734 DW_OP_breg7, 8, /* DW_OP_breg7 (rsp): 8 */
735 DW_OP_breg16, 0, /* DW_OP_breg16 (rip): 0 */
736 DW_OP_lit15, DW_OP_and, DW_OP_lit5, DW_OP_ge,
737 DW_OP_lit3, DW_OP_shl, DW_OP_plus,
738 DW_CFA_nop, DW_CFA_nop, DW_CFA_nop, DW_CFA_nop
739};
740
ee2fdd6f
L		 741/* .eh_frame covering the lazy .plt section with IBT-enabled. */
742
743static const bfd_byte elf_x86_64_eh_frame_lazy_ibt_plt[] =
744{
745 PLT_CIE_LENGTH, 0, 0, 0, /* CIE length */
746 0, 0, 0, 0, /* CIE ID */
747 1, /* CIE version */
748 'z', 'R', 0, /* Augmentation string */
749 1, /* Code alignment factor */
750 0x78, /* Data alignment factor */
751 16, /* Return address column */
752 1, /* Augmentation size */
753 DW_EH_PE_pcrel | DW_EH_PE_sdata4, /* FDE encoding */
754 DW_CFA_def_cfa, 7, 8, /* DW_CFA_def_cfa: r7 (rsp) ofs 8 */
755 DW_CFA_offset + 16, 1, /* DW_CFA_offset: r16 (rip) at cfa-8 */
756 DW_CFA_nop, DW_CFA_nop,
757
758 PLT_FDE_LENGTH, 0, 0, 0, /* FDE length */
759 PLT_CIE_LENGTH + 8, 0, 0, 0, /* CIE pointer */
760 0, 0, 0, 0, /* R_X86_64_PC32 .plt goes here */
761 0, 0, 0, 0, /* .plt size goes here */
762 0, /* Augmentation size */
763 DW_CFA_def_cfa_offset, 16, /* DW_CFA_def_cfa_offset: 16 */
764 DW_CFA_advance_loc + 6, /* DW_CFA_advance_loc: 6 to __PLT__+6 */
765 DW_CFA_def_cfa_offset, 24, /* DW_CFA_def_cfa_offset: 24 */
766 DW_CFA_advance_loc + 10, /* DW_CFA_advance_loc: 10 to __PLT__+16 */
767 DW_CFA_def_cfa_expression, /* DW_CFA_def_cfa_expression */
768 11, /* Block length */
769 DW_OP_breg7, 8, /* DW_OP_breg7 (rsp): 8 */
770 DW_OP_breg16, 0, /* DW_OP_breg16 (rip): 0 */
771 DW_OP_lit15, DW_OP_and, DW_OP_lit10, DW_OP_ge,
772 DW_OP_lit3, DW_OP_shl, DW_OP_plus,
773 DW_CFA_nop, DW_CFA_nop, DW_CFA_nop, DW_CFA_nop
774};
775
776/* .eh_frame covering the x32 lazy .plt section with IBT-enabled. */
777
778static const bfd_byte elf_x32_eh_frame_lazy_ibt_plt[] =
779{
780 PLT_CIE_LENGTH, 0, 0, 0, /* CIE length */
781 0, 0, 0, 0, /* CIE ID */
782 1, /* CIE version */
783 'z', 'R', 0, /* Augmentation string */
784 1, /* Code alignment factor */
785 0x78, /* Data alignment factor */
786 16, /* Return address column */
787 1, /* Augmentation size */
788 DW_EH_PE_pcrel | DW_EH_PE_sdata4, /* FDE encoding */
789 DW_CFA_def_cfa, 7, 8, /* DW_CFA_def_cfa: r7 (rsp) ofs 8 */
790 DW_CFA_offset + 16, 1, /* DW_CFA_offset: r16 (rip) at cfa-8 */
791 DW_CFA_nop, DW_CFA_nop,
792
793 PLT_FDE_LENGTH, 0, 0, 0, /* FDE length */
794 PLT_CIE_LENGTH + 8, 0, 0, 0, /* CIE pointer */
795 0, 0, 0, 0, /* R_X86_64_PC32 .plt goes here */
796 0, 0, 0, 0, /* .plt size goes here */
797 0, /* Augmentation size */
798 DW_CFA_def_cfa_offset, 16, /* DW_CFA_def_cfa_offset: 16 */
799 DW_CFA_advance_loc + 6, /* DW_CFA_advance_loc: 6 to __PLT__+6 */
800 DW_CFA_def_cfa_offset, 24, /* DW_CFA_def_cfa_offset: 24 */
801 DW_CFA_advance_loc + 10, /* DW_CFA_advance_loc: 10 to __PLT__+16 */
802 DW_CFA_def_cfa_expression, /* DW_CFA_def_cfa_expression */
803 11, /* Block length */
804 DW_OP_breg7, 8, /* DW_OP_breg7 (rsp): 8 */
805 DW_OP_breg16, 0, /* DW_OP_breg16 (rip): 0 */
806 DW_OP_lit15, DW_OP_and, DW_OP_lit9, DW_OP_ge,
807 DW_OP_lit3, DW_OP_shl, DW_OP_plus,
808 DW_CFA_nop, DW_CFA_nop, DW_CFA_nop, DW_CFA_nop
809};
810
38b12349 811/* .eh_frame covering the non-lazy .plt section. */
fff53dae 812
38b12349 813static const bfd_byte elf_x86_64_eh_frame_non_lazy_plt[] =
fff53dae
L		 814{
815#define PLT_GOT_FDE_LENGTH 20
816 PLT_CIE_LENGTH, 0, 0, 0, /* CIE length */
817 0, 0, 0, 0, /* CIE ID */
818 1, /* CIE version */
819 'z', 'R', 0, /* Augmentation string */
820 1, /* Code alignment factor */
821 0x78, /* Data alignment factor */
822 16, /* Return address column */
823 1, /* Augmentation size */
824 DW_EH_PE_pcrel | DW_EH_PE_sdata4, /* FDE encoding */
825 DW_CFA_def_cfa, 7, 8, /* DW_CFA_def_cfa: r7 (rsp) ofs 8 */
826 DW_CFA_offset + 16, 1, /* DW_CFA_offset: r16 (rip) at cfa-8 */
827 DW_CFA_nop, DW_CFA_nop,
828
829 PLT_GOT_FDE_LENGTH, 0, 0, 0, /* FDE length */
830 PLT_CIE_LENGTH + 8, 0, 0, 0, /* CIE pointer */
38b12349
L		 831 0, 0, 0, 0, /* the start of non-lazy .plt goes here */
832 0, 0, 0, 0, /* non-lazy .plt size goes here */
fff53dae
L		 833 0, /* Augmentation size */
834 DW_CFA_nop, DW_CFA_nop, DW_CFA_nop, DW_CFA_nop,
835 DW_CFA_nop, DW_CFA_nop, DW_CFA_nop
836};
837
eed180f8 838/* These are the standard parameters. */
765e526c 839static const struct elf_x86_lazy_plt_layout elf_x86_64_lazy_plt =
eed180f8 840 {
07d6d2b8
AM		 841 elf_x86_64_lazy_plt0_entry, /* plt0_entry */
842 LAZY_PLT_ENTRY_SIZE, /* plt0_entry_size */
843 elf_x86_64_lazy_plt_entry, /* plt_entry */
844 LAZY_PLT_ENTRY_SIZE, /* plt_entry_size */
92e68c1d
L		 845 elf_x86_64_tlsdesc_plt_entry, /* plt_tlsdesc_entry */
846 LAZY_PLT_ENTRY_SIZE, /* plt_tlsdesc_entry_size */
847 6, /* plt_tlsdesc_got1_offset */
848 12, /* plt_tlsdesc_got2_offset */
849 10, /* plt_tlsdesc_got1_insn_end */
850 16, /* plt_tlsdesc_got2_insn_end */
07d6d2b8
AM		 851 2, /* plt0_got1_offset */
852 8, /* plt0_got2_offset */
853 12, /* plt0_got2_insn_end */
854 2, /* plt_got_offset */
855 7, /* plt_reloc_offset */
856 12, /* plt_plt_offset */
857 6, /* plt_got_insn_size */
858 LAZY_PLT_ENTRY_SIZE, /* plt_plt_insn_end */
859 6, /* plt_lazy_offset */
860 elf_x86_64_lazy_plt0_entry, /* pic_plt0_entry */
861 elf_x86_64_lazy_plt_entry, /* pic_plt_entry */
862 elf_x86_64_eh_frame_lazy_plt, /* eh_frame_plt */
38b12349
L		 863 sizeof (elf_x86_64_eh_frame_lazy_plt) /* eh_frame_plt_size */
864 };
865
765e526c 866static const struct elf_x86_non_lazy_plt_layout elf_x86_64_non_lazy_plt =
38b12349 867 {
07d6d2b8
AM		 868 elf_x86_64_non_lazy_plt_entry, /* plt_entry */
869 elf_x86_64_non_lazy_plt_entry, /* pic_plt_entry */
870 NON_LAZY_PLT_ENTRY_SIZE, /* plt_entry_size */
871 2, /* plt_got_offset */
872 6, /* plt_got_insn_size */
873 elf_x86_64_eh_frame_non_lazy_plt, /* eh_frame_plt */
38b12349 874 sizeof (elf_x86_64_eh_frame_non_lazy_plt) /* eh_frame_plt_size */
eed180f8
RM		 875 };
876
765e526c 877static const struct elf_x86_lazy_plt_layout elf_x86_64_lazy_bnd_plt =
0ff2b86e 878 {
07d6d2b8
AM		 879 elf_x86_64_lazy_bnd_plt0_entry, /* plt0_entry */
880 LAZY_PLT_ENTRY_SIZE, /* plt0_entry_size */
881 elf_x86_64_lazy_bnd_plt_entry, /* plt_entry */
882 LAZY_PLT_ENTRY_SIZE, /* plt_entry_size */
92e68c1d
L		 883 elf_x86_64_tlsdesc_plt_entry, /* plt_tlsdesc_entry */
884 LAZY_PLT_ENTRY_SIZE, /* plt_tlsdesc_entry_size */
885 6, /* plt_tlsdesc_got1_offset */
886 12, /* plt_tlsdesc_got2_offset */
887 10, /* plt_tlsdesc_got1_insn_end */
888 16, /* plt_tlsdesc_got2_insn_end */
07d6d2b8
AM		 889 2, /* plt0_got1_offset */
890 1+8, /* plt0_got2_offset */
891 1+12, /* plt0_got2_insn_end */
892 1+2, /* plt_got_offset */
893 1, /* plt_reloc_offset */
894 7, /* plt_plt_offset */
895 1+6, /* plt_got_insn_size */
896 11, /* plt_plt_insn_end */
897 0, /* plt_lazy_offset */
898 elf_x86_64_lazy_bnd_plt0_entry, /* pic_plt0_entry */
899 elf_x86_64_lazy_bnd_plt_entry, /* pic_plt_entry */
900 elf_x86_64_eh_frame_lazy_bnd_plt, /* eh_frame_plt */
38b12349
L		 901 sizeof (elf_x86_64_eh_frame_lazy_bnd_plt) /* eh_frame_plt_size */
902 };
903
765e526c 904static const struct elf_x86_non_lazy_plt_layout elf_x86_64_non_lazy_bnd_plt =
38b12349 905 {
07d6d2b8
AM		 906 elf_x86_64_non_lazy_bnd_plt_entry, /* plt_entry */
907 elf_x86_64_non_lazy_bnd_plt_entry, /* pic_plt_entry */
908 NON_LAZY_PLT_ENTRY_SIZE, /* plt_entry_size */
909 1+2, /* plt_got_offset */
910 1+6, /* plt_got_insn_size */
911 elf_x86_64_eh_frame_non_lazy_plt, /* eh_frame_plt */
38b12349
L		 912 sizeof (elf_x86_64_eh_frame_non_lazy_plt) /* eh_frame_plt_size */
913 };
914
765e526c 915static const struct elf_x86_lazy_plt_layout elf_x86_64_lazy_ibt_plt =
ee2fdd6f 916 {
07d6d2b8
AM		 917 elf_x86_64_lazy_bnd_plt0_entry, /* plt0_entry */
918 LAZY_PLT_ENTRY_SIZE, /* plt0_entry_size */
919 elf_x86_64_lazy_ibt_plt_entry, /* plt_entry */
920 LAZY_PLT_ENTRY_SIZE, /* plt_entry_size */
92e68c1d
L		 921 elf_x86_64_tlsdesc_plt_entry, /* plt_tlsdesc_entry */
922 LAZY_PLT_ENTRY_SIZE, /* plt_tlsdesc_entry_size */
923 6, /* plt_tlsdesc_got1_offset */
924 12, /* plt_tlsdesc_got2_offset */
925 10, /* plt_tlsdesc_got1_insn_end */
926 16, /* plt_tlsdesc_got2_insn_end */
07d6d2b8
AM		 927 2, /* plt0_got1_offset */
928 1+8, /* plt0_got2_offset */
929 1+12, /* plt0_got2_insn_end */
930 4+1+2, /* plt_got_offset */
931 4+1, /* plt_reloc_offset */
932 4+1+6, /* plt_plt_offset */
933 4+1+6, /* plt_got_insn_size */
934 4+1+5+5, /* plt_plt_insn_end */
935 0, /* plt_lazy_offset */
936 elf_x86_64_lazy_bnd_plt0_entry, /* pic_plt0_entry */
937 elf_x86_64_lazy_ibt_plt_entry, /* pic_plt_entry */
938 elf_x86_64_eh_frame_lazy_ibt_plt, /* eh_frame_plt */
ee2fdd6f
L		 939 sizeof (elf_x86_64_eh_frame_lazy_ibt_plt) /* eh_frame_plt_size */
940 };
941
765e526c 942static const struct elf_x86_lazy_plt_layout elf_x32_lazy_ibt_plt =
ee2fdd6f 943 {
07d6d2b8
AM		 944 elf_x86_64_lazy_plt0_entry, /* plt0_entry */
945 LAZY_PLT_ENTRY_SIZE, /* plt0_entry_size */
946 elf_x32_lazy_ibt_plt_entry, /* plt_entry */
947 LAZY_PLT_ENTRY_SIZE, /* plt_entry_size */
92e68c1d
L		 948 elf_x86_64_tlsdesc_plt_entry, /* plt_tlsdesc_entry */
949 LAZY_PLT_ENTRY_SIZE, /* plt_tlsdesc_entry_size */
950 6, /* plt_tlsdesc_got1_offset */
951 12, /* plt_tlsdesc_got2_offset */
952 10, /* plt_tlsdesc_got1_insn_end */
953 16, /* plt_tlsdesc_got2_insn_end */
07d6d2b8
AM		 954 2, /* plt0_got1_offset */
955 8, /* plt0_got2_offset */
956 12, /* plt0_got2_insn_end */
957 4+2, /* plt_got_offset */
958 4+1, /* plt_reloc_offset */
959 4+6, /* plt_plt_offset */
960 4+6, /* plt_got_insn_size */
961 4+5+5, /* plt_plt_insn_end */
962 0, /* plt_lazy_offset */
963 elf_x86_64_lazy_plt0_entry, /* pic_plt0_entry */
964 elf_x32_lazy_ibt_plt_entry, /* pic_plt_entry */
965 elf_x32_eh_frame_lazy_ibt_plt, /* eh_frame_plt */
ee2fdd6f
L		 966 sizeof (elf_x32_eh_frame_lazy_ibt_plt) /* eh_frame_plt_size */
967 };
968
765e526c 969static const struct elf_x86_non_lazy_plt_layout elf_x86_64_non_lazy_ibt_plt =
ee2fdd6f 970 {
07d6d2b8
AM		 971 elf_x86_64_non_lazy_ibt_plt_entry, /* plt_entry */
972 elf_x86_64_non_lazy_ibt_plt_entry, /* pic_plt_entry */
973 LAZY_PLT_ENTRY_SIZE, /* plt_entry_size */
974 4+1+2, /* plt_got_offset */
975 4+1+6, /* plt_got_insn_size */
976 elf_x86_64_eh_frame_non_lazy_plt, /* eh_frame_plt */
ee2fdd6f
L		 977 sizeof (elf_x86_64_eh_frame_non_lazy_plt) /* eh_frame_plt_size */
978 };
979
765e526c 980static const struct elf_x86_non_lazy_plt_layout elf_x32_non_lazy_ibt_plt =
ee2fdd6f 981 {
07d6d2b8
AM		 982 elf_x32_non_lazy_ibt_plt_entry, /* plt_entry */
983 elf_x32_non_lazy_ibt_plt_entry, /* pic_plt_entry */
984 LAZY_PLT_ENTRY_SIZE, /* plt_entry_size */
985 4+2, /* plt_got_offset */
986 4+6, /* plt_got_insn_size */
987 elf_x86_64_eh_frame_non_lazy_plt, /* eh_frame_plt */
ee2fdd6f
L		 988 sizeof (elf_x86_64_eh_frame_non_lazy_plt) /* eh_frame_plt_size */
989 };
990
851b6fa1 991static const struct elf_x86_backend_data elf_x86_64_arch_bed =
38b12349 992 {
07d6d2b8 993 is_normal /* os */
0ff2b86e
L		 994 };
995
eed180f8
RM		 996#define elf_backend_arch_data &elf_x86_64_arch_bed
997
b34976b6 998static bfd_boolean
27482721 999elf64_x86_64_elf_object_p (bfd *abfd)
bffbf940 1000{
8d88c4ca
NC		 1001 /* Set the right machine number for an x86-64 elf64 file. */
1002 bfd_default_set_arch_mach (abfd, bfd_arch_i386, bfd_mach_x86_64);
b34976b6 1003 return TRUE;
8d88c4ca
NC		 1004}
1005
8059fb19
RM		 1006static bfd_boolean
1007elf32_x86_64_elf_object_p (bfd *abfd)
1008{
1009 /* Set the right machine number for an x86-64 elf32 file. */
1010 bfd_default_set_arch_mach (abfd, bfd_arch_i386, bfd_mach_x64_32);
1011 return TRUE;
1012}
1013
142411ca
L		 1014/* Return TRUE if the TLS access code sequence support transition
1015 from R_TYPE. */
1016
1017static bfd_boolean
351f65ca
L		 1018elf_x86_64_check_tls_transition (bfd *abfd,
1019 struct bfd_link_info *info,
1020 asection *sec,
1021 bfd_byte *contents,
1022 Elf_Internal_Shdr *symtab_hdr,
1023 struct elf_link_hash_entry **sym_hashes,
1024 unsigned int r_type,
1025 const Elf_Internal_Rela *rel,
1026 const Elf_Internal_Rela *relend)
bffbf940 1027{
142411ca
L		 1028 unsigned int val;
1029 unsigned long r_symndx;
5c98a14e 1030 bfd_boolean largepic = FALSE;
142411ca
L		 1031 struct elf_link_hash_entry *h;
1032 bfd_vma offset;
0afcef53 1033 struct elf_x86_link_hash_table *htab;
e2cbcd91 1034 bfd_byte *call;
1d4af308 1035 bfd_boolean indirect_call;
142411ca 1036
0afcef53 1037 htab = elf_x86_hash_table (info, X86_64_ELF_DATA);
142411ca 1038 offset = rel->r_offset;
bffbf940 1039 switch (r_type)
142411ca
L		 1040 {
1041 case R_X86_64_TLSGD:
1042 case R_X86_64_TLSLD:
1043 if ((rel + 1) >= relend)
1044 return FALSE;
1045
1046 if (r_type == R_X86_64_TLSGD)
1047 {
52bc799a 1048 /* Check transition from GD access model. For 64bit, only
142411ca 1049 .byte 0x66; leaq foo@tlsgd(%rip), %rdi
e2cbcd91
L		 1050 .word 0x6666; rex64; call __tls_get_addr@PLT
1051 or
1052 .byte 0x66; leaq foo@tlsgd(%rip), %rdi
1053 .byte 0x66; rex64
1054 call *__tls_get_addr@GOTPCREL(%rip)
1055 which may be converted to
1056 addr32 call __tls_get_addr
52bc799a
L		 1057 can transit to different access model. For 32bit, only
1058 leaq foo@tlsgd(%rip), %rdi
e2cbcd91
L		 1059 .word 0x6666; rex64; call __tls_get_addr@PLT
1060 or
1061 leaq foo@tlsgd(%rip), %rdi
1062 .byte 0x66; rex64
1063 call *__tls_get_addr@GOTPCREL(%rip)
1064 which may be converted to
1065 addr32 call __tls_get_addr
1066 can transit to different access model. For largepic,
5c98a14e 1067 we also support:
07d6d2b8
AM		 1068 leaq foo@tlsgd(%rip), %rdi
1069 movabsq $__tls_get_addr@pltoff, %rax
1070 addq $r15, %rax
1071 call *%rax
e2cbcd91 1072 or
07d6d2b8
AM		 1073 leaq foo@tlsgd(%rip), %rdi
1074 movabsq $__tls_get_addr@pltoff, %rax
1075 addq $rbx, %rax
1076 call *%rax */
142411ca 1077
fa289a5f
AM		 1078 static const unsigned char leaq[] = { 0x66, 0x48, 0x8d, 0x3d };
1079
5c98a14e 1080 if ((offset + 12) > sec->size)
142411ca 1081 return FALSE;
52bc799a 1082
e2cbcd91
L		 1083 call = contents + offset + 4;
1084 if (call[0] != 0x66
1085 || !((call[1] == 0x48
1086 && call[2] == 0xff
1087 && call[3] == 0x15)
1088 || (call[1] == 0x48
1089 && call[2] == 0x67
1090 && call[3] == 0xe8)
1091 || (call[1] == 0x66
1092 && call[2] == 0x48
1093 && call[3] == 0xe8)))
5c98a14e
JJ		 1094 {
1095 if (!ABI_64_P (abfd)
1096 || (offset + 19) > sec->size
1097 || offset < 3
e2cbcd91
L		 1098 || memcmp (call - 7, leaq + 1, 3) != 0
1099 || memcmp (call, "\x48\xb8", 2) != 0
1100 || call[11] != 0x01
1101 || call[13] != 0xff
1102 || call[14] != 0xd0
1103 || !((call[10] == 0x48 && call[12] == 0xd8)
1104 || (call[10] == 0x4c && call[12] == 0xf8)))
5c98a14e
JJ		 1105 return FALSE;
1106 largepic = TRUE;
1107 }
1108 else if (ABI_64_P (abfd))
52bc799a 1109 {
52bc799a 1110 if (offset < 4
fa289a5f 1111 || memcmp (contents + offset - 4, leaq, 4) != 0)
52bc799a
L		 1112 return FALSE;
1113 }
1114 else
1115 {
52bc799a 1116 if (offset < 3
fa289a5f 1117 || memcmp (contents + offset - 3, leaq + 1, 3) != 0)
52bc799a
L		 1118 return FALSE;
1119 }
e2cbcd91 1120 indirect_call = call[2] == 0xff;
142411ca
L		 1121 }
1122 else
1123 {
1124 /* Check transition from LD access model. Only
1125 leaq foo@tlsld(%rip), %rdi;
e2cbcd91 1126 call __tls_get_addr@PLT
07d6d2b8 1127 or
e2cbcd91
L		 1128 leaq foo@tlsld(%rip), %rdi;
1129 call *__tls_get_addr@GOTPCREL(%rip)
1130 which may be converted to
1131 addr32 call __tls_get_addr
5c98a14e
JJ		 1132 can transit to different access model. For largepic
1133 we also support:
07d6d2b8
AM		 1134 leaq foo@tlsld(%rip), %rdi
1135 movabsq $__tls_get_addr@pltoff, %rax
1136 addq $r15, %rax
1137 call *%rax
e2cbcd91 1138 or
07d6d2b8
AM		 1139 leaq foo@tlsld(%rip), %rdi
1140 movabsq $__tls_get_addr@pltoff, %rax
1141 addq $rbx, %rax
1142 call *%rax */
142411ca 1143
fa289a5f 1144 static const unsigned char lea[] = { 0x48, 0x8d, 0x3d };
142411ca
L		 1145
1146 if (offset < 3 || (offset + 9) > sec->size)
1147 return FALSE;
1148
5c98a14e 1149 if (memcmp (contents + offset - 3, lea, 3) != 0)
142411ca 1150 return FALSE;
5c98a14e 1151
e2cbcd91
L		 1152 call = contents + offset + 4;
1153 if (!(call[0] == 0xe8
1154 || (call[0] == 0xff && call[1] == 0x15)
1155 || (call[0] == 0x67 && call[1] == 0xe8)))
5c98a14e
JJ		 1156 {
1157 if (!ABI_64_P (abfd)
1158 || (offset + 19) > sec->size
e2cbcd91
L		 1159 || memcmp (call, "\x48\xb8", 2) != 0
1160 || call[11] != 0x01
1161 || call[13] != 0xff
1162 || call[14] != 0xd0
1163 || !((call[10] == 0x48 && call[12] == 0xd8)
1164 || (call[10] == 0x4c && call[12] == 0xf8)))
5c98a14e
JJ		 1165 return FALSE;
1166 largepic = TRUE;
1167 }
e2cbcd91 1168 indirect_call = call[0] == 0xff;
142411ca
L		 1169 }
1170
351f65ca 1171 r_symndx = htab->r_sym (rel[1].r_info);
142411ca
L		 1172 if (r_symndx < symtab_hdr->sh_info)
1173 return FALSE;
1174
1175 h = sym_hashes[r_symndx - symtab_hdr->sh_info];
1d4af308 1176 if (h == NULL
0afcef53 1177 || !((struct elf_x86_link_hash_entry *) h)->tls_get_addr)
e2cbcd91 1178 return FALSE;
e2cbcd91 1179 else
78984959
L		 1180 {
1181 r_type = (ELF32_R_TYPE (rel[1].r_info)
1182 & ~R_X86_64_converted_reloc_bit);
1183 if (largepic)
1184 return r_type == R_X86_64_PLTOFF64;
1185 else if (indirect_call)
1186 return r_type == R_X86_64_GOTPCRELX;
1187 else
1188 return (r_type == R_X86_64_PC32 || r_type == R_X86_64_PLT32);
1189 }
142411ca
L		 1190
1191 case R_X86_64_GOTTPOFF:
1192 /* Check transition from IE access model:
4a4c5f25
L		 1193 mov foo@gottpoff(%rip), %reg
1194 add foo@gottpoff(%rip), %reg
142411ca
L		 1195 */
1196
4a4c5f25
L		 1197 /* Check REX prefix first. */
1198 if (offset >= 3 && (offset + 4) <= sec->size)
1199 {
1200 val = bfd_get_8 (abfd, contents + offset - 3);
1201 if (val != 0x48 && val != 0x4c)
1202 {
1203 /* X32 may have 0x44 REX prefix or no REX prefix. */
1204 if (ABI_64_P (abfd))
1205 return FALSE;
1206 }
1207 }
1208 else
1209 {
1210 /* X32 may not have any REX prefix. */
1211 if (ABI_64_P (abfd))
1212 return FALSE;
1213 if (offset < 2 || (offset + 3) > sec->size)
1214 return FALSE;
1215 }
142411ca
L		 1216
1217 val = bfd_get_8 (abfd, contents + offset - 2);
1218 if (val != 0x8b && val != 0x03)
1219 return FALSE;
1220
1221 val = bfd_get_8 (abfd, contents + offset - 1);
1222 return (val & 0xc7) == 5;
1223
1224 case R_X86_64_GOTPC32_TLSDESC:
1225 /* Check transition from GDesc access model:
1226 leaq x@tlsdesc(%rip), %rax
1227
1228 Make sure it's a leaq adding rip to a 32-bit offset
1229 into any register, although it's probably almost always
1230 going to be rax. */
1231
1232 if (offset < 3 || (offset + 4) > sec->size)
1233 return FALSE;
1234
1235 val = bfd_get_8 (abfd, contents + offset - 3);
1236 if ((val & 0xfb) != 0x48)
1237 return FALSE;
1238
1239 if (bfd_get_8 (abfd, contents + offset - 2) != 0x8d)
1240 return FALSE;
1241
1242 val = bfd_get_8 (abfd, contents + offset - 1);
1243 return (val & 0xc7) == 0x05;
1244
1245 case R_X86_64_TLSDESC_CALL:
1246 /* Check transition from GDesc access model:
1247 call *x@tlsdesc(%rax)
1248 */
1249 if (offset + 2 <= sec->size)
1250 {
1251 /* Make sure that it's a call *x@tlsdesc(%rax). */
e2cbcd91
L		 1252 call = contents + offset;
1253 return call[0] == 0xff && call[1] == 0x10;
142411ca
L		 1254 }
1255
1256 return FALSE;
1257
1258 default:
1259 abort ();
1260 }
1261}
1262
1263/* Return TRUE if the TLS access transition is OK or no transition
1264 will be performed. Update R_TYPE if there is a transition. */
1265
1266static bfd_boolean
351f65ca
L		 1267elf_x86_64_tls_transition (struct bfd_link_info *info, bfd *abfd,
1268 asection *sec, bfd_byte *contents,
1269 Elf_Internal_Shdr *symtab_hdr,
1270 struct elf_link_hash_entry **sym_hashes,
1271 unsigned int *r_type, int tls_type,
1272 const Elf_Internal_Rela *rel,
1273 const Elf_Internal_Rela *relend,
1274 struct elf_link_hash_entry *h,
bedfd056
L		 1275 unsigned long r_symndx,
1276 bfd_boolean from_relocate_section)
142411ca
L		 1277{
1278 unsigned int from_type = *r_type;
1279 unsigned int to_type = from_type;
1280 bfd_boolean check = TRUE;
1281
bb1cb422
L		 1282 /* Skip TLS transition for functions. */
1283 if (h != NULL
1284 && (h->type == STT_FUNC
1285 || h->type == STT_GNU_IFUNC))
1286 return TRUE;
1287
142411ca 1288 switch (from_type)
bffbf940
JJ		 1289 {
1290 case R_X86_64_TLSGD:
67a4f2b7
AO		 1291 case R_X86_64_GOTPC32_TLSDESC:
1292 case R_X86_64_TLSDESC_CALL:
bffbf940 1293 case R_X86_64_GOTTPOFF:
0e1862bb 1294 if (bfd_link_executable (info))
142411ca
L		 1295 {
1296 if (h == NULL)
1297 to_type = R_X86_64_TPOFF32;
1298 else
1299 to_type = R_X86_64_GOTTPOFF;
1300 }
1301
bedfd056
L		 1302 /* When we are called from elf_x86_64_relocate_section, there may
1303 be additional transitions based on TLS_TYPE. */
1304 if (from_relocate_section)
142411ca
L		 1305 {
1306 unsigned int new_to_type = to_type;
1307
51537393 1308 if (TLS_TRANSITION_IE_TO_LE_P (info, h, tls_type))
142411ca
L		 1309 new_to_type = R_X86_64_TPOFF32;
1310
1311 if (to_type == R_X86_64_TLSGD
1312 || to_type == R_X86_64_GOTPC32_TLSDESC
1313 || to_type == R_X86_64_TLSDESC_CALL)
1314 {
1315 if (tls_type == GOT_TLS_IE)
1316 new_to_type = R_X86_64_GOTTPOFF;
1317 }
1318
1319 /* We checked the transition before when we were called from
351f65ca 1320 elf_x86_64_check_relocs. We only want to check the new
142411ca
L		 1321 transition which hasn't been checked before. */
1322 check = new_to_type != to_type && from_type == to_type;
1323 to_type = new_to_type;
1324 }
1325
1326 break;
1327
bffbf940 1328 case R_X86_64_TLSLD:
0e1862bb 1329 if (bfd_link_executable (info))
142411ca
L		 1330 to_type = R_X86_64_TPOFF32;
1331 break;
1332
1333 default:
1334 return TRUE;
bffbf940
JJ		 1335 }
1336
142411ca
L		 1337 /* Return TRUE if there is no transition. */
1338 if (from_type == to_type)
1339 return TRUE;
1340
1341 /* Check if the transition can be performed. */
1342 if (check
351f65ca
L		 1343 && ! elf_x86_64_check_tls_transition (abfd, info, sec, contents,
1344 symtab_hdr, sym_hashes,
1345 from_type, rel, relend))
142411ca 1346 {
2f629d23 1347 reloc_howto_type *from, *to;
4c544807 1348 const char *name;
142411ca 1349
351f65ca
L		 1350 from = elf_x86_64_rtype_to_howto (abfd, from_type);
1351 to = elf_x86_64_rtype_to_howto (abfd, to_type);
142411ca 1352
f3185997
NC		 1353 if (from == NULL || to == NULL)
1354 return FALSE;
1355
4c544807
L		 1356 if (h)
1357 name = h->root.root.string;
1358 else
1359 {
0afcef53 1360 struct elf_x86_link_hash_table *htab;
4dfe6ac6 1361
0afcef53 1362 htab = elf_x86_hash_table (info, X86_64_ELF_DATA);
4dfe6ac6
NC		 1363 if (htab == NULL)
1364 name = "*unknown*";
1365 else
1366 {
1367 Elf_Internal_Sym *isym;
1368
1369 isym = bfd_sym_from_r_symndx (&htab->sym_cache,
1370 abfd, r_symndx);
1371 name = bfd_elf_sym_name (abfd, symtab_hdr, isym, NULL);
1372 }
4c544807
L		 1373 }
1374
4eca0228 1375 _bfd_error_handler
695344c0 1376 /* xgettext:c-format */
2dcf00ce
AM		 1377 (_("%pB: TLS transition from %s to %s against `%s' at %#" PRIx64
1378 " in section `%pA' failed"),
1379 abfd, from->name, to->name, name, (uint64_t) rel->r_offset, sec);
142411ca
L		 1380 bfd_set_error (bfd_error_bad_value);
1381 return FALSE;
1382 }
1383
1384 *r_type = to_type;
1385 return TRUE;
bffbf940
JJ		 1386}
1387
c1d11331
L		 1388/* Rename some of the generic section flags to better document how they
1389 are used here. */
6999821f 1390#define check_relocs_failed sec_flg0
338c190a
L		 1391
1392static bfd_boolean
aab921ad
L		 1393elf_x86_64_need_pic (struct bfd_link_info *info,
1394 bfd *input_bfd, asection *sec,
338c190a
L		 1395 struct elf_link_hash_entry *h,
1396 Elf_Internal_Shdr *symtab_hdr,
1397 Elf_Internal_Sym *isym,
1398 reloc_howto_type *howto)
1399{
1400 const char *v = "";
1401 const char *und = "";
1402 const char *pic = "";
aab921ad 1403 const char *object;
338c190a
L		 1404
1405 const char *name;
1406 if (h)
1407 {
1408 name = h->root.root.string;
1409 switch (ELF_ST_VISIBILITY (h->other))
1410 {
1411 case STV_HIDDEN:
1412 v = _("hidden symbol ");
1413 break;
1414 case STV_INTERNAL:
1415 v = _("internal symbol ");
1416 break;
1417 case STV_PROTECTED:
1418 v = _("protected symbol ");
1419 break;
1420 default:
0afcef53 1421 if (((struct elf_x86_link_hash_entry *) h)->def_protected)
a5b4ee94
L		 1422 v = _("protected symbol ");
1423 else
1424 v = _("symbol ");
338c190a
L		 1425 pic = _("; recompile with -fPIC");
1426 break;
1427 }
1428
1429 if (!h->def_regular && !h->def_dynamic)
1430 und = _("undefined ");
1431 }
1432 else
1433 {
1434 name = bfd_elf_sym_name (input_bfd, symtab_hdr, isym, NULL);
1435 pic = _("; recompile with -fPIC");
1436 }
1437
aab921ad
L		 1438 if (bfd_link_dll (info))
1439 object = _("a shared object");
1440 else if (bfd_link_pie (info))
1441 object = _("a PIE object");
1442 else
1443 object = _("a PDE object");
1444
695344c0 1445 /* xgettext:c-format */
871b3ab2 1446 _bfd_error_handler (_("%pB: relocation %s against %s%s`%s' can "
aab921ad
L		 1447 "not be used when making %s%s"),
1448 input_bfd, howto->name, und, v, name,
1449 object, pic);
338c190a
L		 1450 bfd_set_error (bfd_error_bad_value);
1451 sec->check_relocs_failed = 1;
1452 return FALSE;
1453}
c1d11331 1454
c175a657
L		 1455/* With the local symbol, foo, we convert
1456 mov foo@GOTPCREL(%rip), %reg
1457 to
1458 lea foo(%rip), %reg
1459 and convert
1460 call/jmp *foo@GOTPCREL(%rip)
1461 to
1462 nop call foo/jmp foo nop
1463 When PIC is false, convert
1464 test %reg, foo@GOTPCREL(%rip)
1465 to
1466 test $foo, %reg
1467 and convert
1468 binop foo@GOTPCREL(%rip), %reg
1469 to
1470 binop $foo, %reg
1471 where binop is one of adc, add, and, cmp, or, sbb, sub, xor
1472 instructions. */
1473
1474static bfd_boolean
8b43e456 1475elf_x86_64_convert_load_reloc (bfd *abfd,
c175a657 1476 bfd_byte *contents,
6999821f 1477 unsigned int *r_type_p,
c175a657
L		 1478 Elf_Internal_Rela *irel,
1479 struct elf_link_hash_entry *h,
1480 bfd_boolean *converted,
1481 struct bfd_link_info *link_info)
1482{
0afcef53 1483 struct elf_x86_link_hash_table *htab;
c175a657 1484 bfd_boolean is_pic;
8b43e456 1485 bfd_boolean no_overflow;
c175a657
L		 1486 bfd_boolean relocx;
1487 bfd_boolean to_reloc_pc32;
1488 asection *tsec;
c175a657
L		 1489 bfd_signed_vma raddend;
1490 unsigned int opcode;
1491 unsigned int modrm;
6999821f 1492 unsigned int r_type = *r_type_p;
c175a657 1493 unsigned int r_symndx;
c175a657
L		 1494 bfd_vma roff = irel->r_offset;
1495
1496 if (roff < (r_type == R_X86_64_REX_GOTPCRELX ? 3 : 2))
1497 return TRUE;
1498
1499 raddend = irel->r_addend;
1500 /* Addend for 32-bit PC-relative relocation must be -4. */
1501 if (raddend != -4)
1502 return TRUE;
1503
0afcef53 1504 htab = elf_x86_hash_table (link_info, X86_64_ELF_DATA);
c175a657
L		 1505 is_pic = bfd_link_pic (link_info);
1506
1507 relocx = (r_type == R_X86_64_GOTPCRELX
1508 || r_type == R_X86_64_REX_GOTPCRELX);
1509
8b43e456
L		 1510 /* TRUE if --no-relax is used. */
1511 no_overflow = link_info->disable_target_specific_optimizations > 1;
c175a657
L		 1512
1513 r_symndx = htab->r_sym (irel->r_info);
1514
1515 opcode = bfd_get_8 (abfd, contents + roff - 2);
1516
1517 /* Convert mov to lea since it has been done for a while. */
1518 if (opcode != 0x8b)
1519 {
1520 /* Only convert R_X86_64_GOTPCRELX and R_X86_64_REX_GOTPCRELX
1521 for call, jmp or one of adc, add, and, cmp, or, sbb, sub,
1522 test, xor instructions. */
1523 if (!relocx)
1524 return TRUE;
1525 }
1526
1527 /* We convert only to R_X86_64_PC32:
1528 1. Branch.
1529 2. R_X86_64_GOTPCREL since we can't modify REX byte.
8b43e456 1530 3. no_overflow is true.
c175a657
L		 1531 4. PIC.
1532 */
1533 to_reloc_pc32 = (opcode == 0xff
1534 || !relocx
8b43e456 1535 || no_overflow
c175a657
L		 1536 || is_pic);
1537
1538 /* Get the symbol referred to by the reloc. */
1539 if (h == NULL)
1540 {
1541 Elf_Internal_Sym *isym
1542 = bfd_sym_from_r_symndx (&htab->sym_cache, abfd, r_symndx);
1543
1544 /* Skip relocation against undefined symbols. */
1545 if (isym->st_shndx == SHN_UNDEF)
1546 return TRUE;
1547
c175a657
L		 1548 if (isym->st_shndx == SHN_ABS)
1549 tsec = bfd_abs_section_ptr;
1550 else if (isym->st_shndx == SHN_COMMON)
1551 tsec = bfd_com_section_ptr;
1552 else if (isym->st_shndx == SHN_X86_64_LCOMMON)
1553 tsec = &_bfd_elf_large_com_section;
1554 else
1555 tsec = bfd_section_from_elf_index (abfd, isym->st_shndx);
c175a657
L		 1556 }
1557 else
1558 {
1559 /* Undefined weak symbol is only bound locally in executable
1560 and its reference is resolved as 0 without relocation
1561 overflow. We can only perform this optimization for
1562 GOTPCRELX relocations since we need to modify REX byte.
1563 It is OK convert mov with R_X86_64_GOTPCREL to
1564 R_X86_64_PC32. */
0a27fed7
L		 1565 bfd_boolean local_ref;
1566 struct elf_x86_link_hash_entry *eh = elf_x86_hash_entry (h);
1567
1568 /* NB: Also set linker_def via SYMBOL_REFERENCES_LOCAL_P. */
1569 local_ref = SYMBOL_REFERENCES_LOCAL_P (link_info, h);
c175a657 1570 if ((relocx || opcode == 0x8b)
0a27fed7
L		 1571 && (h->root.type == bfd_link_hash_undefweak
1572 && !eh->linker_def
1573 && local_ref))
c175a657
L		 1574 {
1575 if (opcode == 0xff)
1576 {
1577 /* Skip for branch instructions since R_X86_64_PC32
1578 may overflow. */
8b43e456 1579 if (no_overflow)
c175a657
L		 1580 return TRUE;
1581 }
1582 else if (relocx)
1583 {
1584 /* For non-branch instructions, we can convert to
1585 R_X86_64_32/R_X86_64_32S since we know if there
1586 is a REX byte. */
1587 to_reloc_pc32 = FALSE;
1588 }
1589
1590 /* Since we don't know the current PC when PIC is true,
1591 we can't convert to R_X86_64_PC32. */
1592 if (to_reloc_pc32 && is_pic)
1593 return TRUE;
1594
1595 goto convert;
1596 }
1597 /* Avoid optimizing GOTPCREL relocations againt _DYNAMIC since
1598 ld.so may use its link-time address. */
cbd0eecf 1599 else if (h->start_stop
0a27fed7 1600 || eh->linker_def
cbd0eecf
L		 1601 || ((h->def_regular
1602 || h->root.type == bfd_link_hash_defined
1603 || h->root.type == bfd_link_hash_defweak)
1604 && h != htab->elf.hdynamic
0a27fed7 1605 && local_ref))
c175a657
L		 1606 {
1607 /* bfd_link_hash_new or bfd_link_hash_undefined is
1608 set by an assignment in a linker script in
cbd0eecf
L		 1609 bfd_elf_record_link_assignment. start_stop is set
1610 on __start_SECNAME/__stop_SECNAME which mark section
1611 SECNAME. */
1612 if (h->start_stop
0a27fed7 1613 || eh->linker_def
cbd0eecf
L		 1614 || (h->def_regular
1615 && (h->root.type == bfd_link_hash_new
1616 || h->root.type == bfd_link_hash_undefined
1617 || ((h->root.type == bfd_link_hash_defined
1618 || h->root.type == bfd_link_hash_defweak)
1619 && h->root.u.def.section == bfd_und_section_ptr))))
c175a657
L		 1620 {
1621 /* Skip since R_X86_64_32/R_X86_64_32S may overflow. */
8b43e456 1622 if (no_overflow)
c175a657
L		 1623 return TRUE;
1624 goto convert;
1625 }
1626 tsec = h->root.u.def.section;
c175a657
L		 1627 }
1628 else
1629 return TRUE;
1630 }
1631
2168b268
L		 1632 /* Don't convert GOTPCREL relocation against large section. */
1633 if (elf_section_data (tsec) != NULL
1634 && (elf_section_flags (tsec) & SHF_X86_64_LARGE) != 0)
1635 return TRUE;
1636
8b43e456
L		 1637 /* Skip since R_X86_64_PC32/R_X86_64_32/R_X86_64_32S may overflow. */
1638 if (no_overflow)
1639 return TRUE;
c175a657 1640
dc089072 1641convert:
c175a657
L		 1642 if (opcode == 0xff)
1643 {
1644 /* We have "call/jmp *foo@GOTPCREL(%rip)". */
1645 unsigned int nop;
1646 unsigned int disp;
1647 bfd_vma nop_offset;
1648
1649 /* Convert R_X86_64_GOTPCRELX and R_X86_64_REX_GOTPCRELX to
1650 R_X86_64_PC32. */
1651 modrm = bfd_get_8 (abfd, contents + roff - 1);
1652 if (modrm == 0x25)
1653 {
1654 /* Convert to "jmp foo nop". */
1655 modrm = 0xe9;
1656 nop = NOP_OPCODE;
1657 nop_offset = irel->r_offset + 3;
1658 disp = bfd_get_32 (abfd, contents + irel->r_offset);
1659 irel->r_offset -= 1;
1660 bfd_put_32 (abfd, disp, contents + irel->r_offset);
1661 }
1662 else
1663 {
0afcef53
L		 1664 struct elf_x86_link_hash_entry *eh
1665 = (struct elf_x86_link_hash_entry *) h;
e2cbcd91 1666
c175a657
L		 1667 /* Convert to "nop call foo". ADDR_PREFIX_OPCODE
1668 is a nop prefix. */
1669 modrm = 0xe8;
e2cbcd91
L		 1670 /* To support TLS optimization, always use addr32 prefix for
1671 "call *__tls_get_addr@GOTPCREL(%rip)". */
1d4af308 1672 if (eh && eh->tls_get_addr)
c175a657 1673 {
e2cbcd91
L		 1674 nop = 0x67;
1675 nop_offset = irel->r_offset - 2;
c175a657
L		 1676 }
1677 else
e2cbcd91
L		 1678 {
1679 nop = link_info->call_nop_byte;
1680 if (link_info->call_nop_as_suffix)
1681 {
1682 nop_offset = irel->r_offset + 3;
1683 disp = bfd_get_32 (abfd, contents + irel->r_offset);
1684 irel->r_offset -= 1;
1685 bfd_put_32 (abfd, disp, contents + irel->r_offset);
1686 }
1687 else
1688 nop_offset = irel->r_offset - 2;
1689 }
c175a657
L		 1690 }
1691 bfd_put_8 (abfd, nop, contents + nop_offset);
1692 bfd_put_8 (abfd, modrm, contents + irel->r_offset - 1);
1693 r_type = R_X86_64_PC32;
1694 }
1695 else
1696 {
1697 unsigned int rex;
1698 unsigned int rex_mask = REX_R;
1699
1700 if (r_type == R_X86_64_REX_GOTPCRELX)
1701 rex = bfd_get_8 (abfd, contents + roff - 3);
1702 else
1703 rex = 0;
1704
1705 if (opcode == 0x8b)
1706 {
1707 if (to_reloc_pc32)
1708 {
1709 /* Convert "mov foo@GOTPCREL(%rip), %reg" to
1710 "lea foo(%rip), %reg". */
1711 opcode = 0x8d;
1712 r_type = R_X86_64_PC32;
1713 }
1714 else
1715 {
1716 /* Convert "mov foo@GOTPCREL(%rip), %reg" to
1717 "mov $foo, %reg". */
1718 opcode = 0xc7;
1719 modrm = bfd_get_8 (abfd, contents + roff - 1);
1720 modrm = 0xc0 | (modrm & 0x38) >> 3;
1721 if ((rex & REX_W) != 0
1722 && ABI_64_P (link_info->output_bfd))
1723 {
1724 /* Keep the REX_W bit in REX byte for LP64. */
1725 r_type = R_X86_64_32S;
1726 goto rewrite_modrm_rex;
1727 }
1728 else
1729 {
1730 /* If the REX_W bit in REX byte isn't needed,
1731 use R_X86_64_32 and clear the W bit to avoid
1732 sign-extend imm32 to imm64. */
1733 r_type = R_X86_64_32;
1734 /* Clear the W bit in REX byte. */
1735 rex_mask |= REX_W;
1736 goto rewrite_modrm_rex;
1737 }
1738 }
1739 }
1740 else
1741 {
1742 /* R_X86_64_PC32 isn't supported. */
1743 if (to_reloc_pc32)
1744 return TRUE;
1745
1746 modrm = bfd_get_8 (abfd, contents + roff - 1);
1747 if (opcode == 0x85)
1748 {
1749 /* Convert "test %reg, foo@GOTPCREL(%rip)" to
1750 "test $foo, %reg". */
1751 modrm = 0xc0 | (modrm & 0x38) >> 3;
1752 opcode = 0xf7;
1753 }
1754 else
1755 {
1756 /* Convert "binop foo@GOTPCREL(%rip), %reg" to
1757 "binop $foo, %reg". */
1758 modrm = 0xc0 | (modrm & 0x38) >> 3 | (opcode & 0x3c);
1759 opcode = 0x81;
1760 }
1761
1762 /* Use R_X86_64_32 with 32-bit operand to avoid relocation
1763 overflow when sign-extending imm32 to imm64. */
1764 r_type = (rex & REX_W) != 0 ? R_X86_64_32S : R_X86_64_32;
1765
1766rewrite_modrm_rex:
1767 bfd_put_8 (abfd, modrm, contents + roff - 1);
1768
1769 if (rex)
1770 {
1771 /* Move the R bit to the B bit in REX byte. */
1772 rex = (rex & ~rex_mask) | (rex & REX_R) >> 2;
1773 bfd_put_8 (abfd, rex, contents + roff - 3);
1774 }
1775
1776 /* No addend for R_X86_64_32/R_X86_64_32S relocations. */
1777 irel->r_addend = 0;
1778 }
1779
1780 bfd_put_8 (abfd, opcode, contents + roff - 2);
1781 }
1782
6999821f 1783 *r_type_p = r_type;
78984959
L		 1784 irel->r_info = htab->r_info (r_symndx,
1785 r_type | R_X86_64_converted_reloc_bit);
c175a657
L		 1786
1787 *converted = TRUE;
1788
1789 return TRUE;
1790}
1791
70256ad8 1792/* Look through the relocs for a section during the first phase, and
c434dee6
AJ		 1793 calculate needed space in the global offset table, procedure
1794 linkage table, and dynamic reloc sections. */
70256ad8 1795
b34976b6 1796static bfd_boolean
351f65ca
L		 1797elf_x86_64_check_relocs (bfd *abfd, struct bfd_link_info *info,
1798 asection *sec,
1799 const Elf_Internal_Rela *relocs)
70256ad8 1800{
0afcef53 1801 struct elf_x86_link_hash_table *htab;
70256ad8
AJ		 1802 Elf_Internal_Shdr *symtab_hdr;
1803 struct elf_link_hash_entry **sym_hashes;
70256ad8
AJ		 1804 const Elf_Internal_Rela *rel;
1805 const Elf_Internal_Rela *rel_end;
70256ad8 1806 asection *sreloc;
bedfd056 1807 bfd_byte *contents;
5e5e02ae 1808 bfd_boolean converted;
70256ad8 1809
0e1862bb 1810 if (bfd_link_relocatable (info))
b34976b6 1811 return TRUE;
70256ad8 1812
081b1afe
L		 1813 /* Don't do anything special with non-loaded, non-alloced sections.
1814 In particular, any relocs in such sections should not affect GOT
1815 and PLT reference counting (ie. we don't allow them to create GOT
1816 or PLT entries), there's no possibility or desire to optimize TLS
1817 relocs, and there's not much point in propagating relocs to shared
1818 libs that the dynamic linker won't relocate. */
1819 if ((sec->flags & SEC_ALLOC) == 0)
1820 return TRUE;
1821
0afcef53 1822 htab = elf_x86_hash_table (info, X86_64_ELF_DATA);
4dfe6ac6 1823 if (htab == NULL)
afd9acee
L		 1824 {
1825 sec->check_relocs_failed = 1;
1826 return FALSE;
1827 }
4dfe6ac6 1828
fe53b4a4
L		 1829 BFD_ASSERT (is_x86_elf (abfd, htab));
1830
bedfd056
L		 1831 /* Get the section contents. */
1832 if (elf_section_data (sec)->this_hdr.contents != NULL)
1833 contents = elf_section_data (sec)->this_hdr.contents;
1834 else if (!bfd_malloc_and_get_section (abfd, sec, &contents))
1835 {
1836 sec->check_relocs_failed = 1;
1837 return FALSE;
1838 }
1839
0ffa91dd 1840 symtab_hdr = &elf_symtab_hdr (abfd);
70256ad8 1841 sym_hashes = elf_sym_hashes (abfd);
70256ad8 1842
5e5e02ae
L		 1843 converted = FALSE;
1844
c434dee6 1845 sreloc = NULL;
cbe950e9 1846
70256ad8
AJ		 1847 rel_end = relocs + sec->reloc_count;
1848 for (rel = relocs; rel < rel_end; rel++)
1849 {
bffbf940 1850 unsigned int r_type;
d42c267e 1851 unsigned int r_symndx;
70256ad8 1852 struct elf_link_hash_entry *h;
0afcef53 1853 struct elf_x86_link_hash_entry *eh;
4c544807
L		 1854 Elf_Internal_Sym *isym;
1855 const char *name;
06a6a421 1856 bfd_boolean size_reloc;
6999821f 1857 bfd_boolean converted_reloc;
70256ad8 1858
351f65ca
L		 1859 r_symndx = htab->r_sym (rel->r_info);
1860 r_type = ELF32_R_TYPE (rel->r_info);
c434dee6
AJ		 1861
1862 if (r_symndx >= NUM_SHDR_ENTRIES (symtab_hdr))
1863 {
695344c0 1864 /* xgettext:c-format */
871b3ab2 1865 _bfd_error_handler (_("%pB: bad symbol index: %d"),
4eca0228 1866 abfd, r_symndx);
afd9acee 1867 goto error_return;
c434dee6
AJ		 1868 }
1869
70256ad8 1870 if (r_symndx < symtab_hdr->sh_info)
c25bc9fc
L		 1871 {
1872 /* A local symbol. */
c2e61a4e
L		 1873 isym = bfd_sym_from_r_symndx (&htab->sym_cache,
1874 abfd, r_symndx);
1875 if (isym == NULL)
afd9acee 1876 goto error_return;
c25bc9fc
L		 1877
1878 /* Check relocation against local STT_GNU_IFUNC symbol. */
351f65ca 1879 if (ELF_ST_TYPE (isym->st_info) == STT_GNU_IFUNC)
c25bc9fc 1880 {
0afcef53
L		 1881 h = _bfd_elf_x86_get_local_sym_hash (htab, abfd, rel,
1882 TRUE);
c25bc9fc 1883 if (h == NULL)
afd9acee 1884 goto error_return;
6bbec505 1885
c25bc9fc 1886 /* Fake a STT_GNU_IFUNC symbol. */
6322e5c5
L		 1887 h->root.root.string = bfd_elf_sym_name (abfd, symtab_hdr,
1888 isym, NULL);
c25bc9fc
L		 1889 h->type = STT_GNU_IFUNC;
1890 h->def_regular = 1;
1891 h->ref_regular = 1;
1892 h->forced_local = 1;
1893 h->root.type = bfd_link_hash_defined;
1894 }
1895 else
1896 h = NULL;
1897 }
70256ad8 1898 else
71cb9464 1899 {
4c544807 1900 isym = NULL;
71cb9464
L		 1901 h = sym_hashes[r_symndx - symtab_hdr->sh_info];
1902 while (h->root.type == bfd_link_hash_indirect
1903 || h->root.type == bfd_link_hash_warning)
1904 h = (struct elf_link_hash_entry *) h->root.u.i.link;
c25bc9fc 1905 }
cbe950e9 1906
d1534d16
L		 1907 /* Check invalid x32 relocations. */
1908 if (!ABI_64_P (abfd))
1909 switch (r_type)
1910 {
1911 default:
1912 break;
1913
d1534d16
L		 1914 case R_X86_64_DTPOFF64:
1915 case R_X86_64_TPOFF64:
1916 case R_X86_64_PC64:
1917 case R_X86_64_GOTOFF64:
1918 case R_X86_64_GOT64:
1919 case R_X86_64_GOTPCREL64:
1920 case R_X86_64_GOTPC64:
1921 case R_X86_64_GOTPLT64:
1922 case R_X86_64_PLTOFF64:
1923 {
1924 if (h)
1925 name = h->root.root.string;
1926 else
1927 name = bfd_elf_sym_name (abfd, symtab_hdr, isym,
1928 NULL);
4eca0228 1929 _bfd_error_handler
695344c0 1930 /* xgettext:c-format */
871b3ab2 1931 (_("%pB: relocation %s against symbol `%s' isn't "
d1534d16
L		 1932 "supported in x32 mode"), abfd,
1933 x86_64_elf_howto_table[r_type].name, name);
1934 bfd_set_error (bfd_error_bad_value);
afd9acee 1935 goto error_return;
d1534d16
L		 1936 }
1937 break;
1938 }
1939
c25bc9fc
L		 1940 if (h != NULL)
1941 {
ad1e85de
L		 1942 /* It is referenced by a non-shared object. */
1943 h->ref_regular = 1;
13a2df29
L		 1944
1945 if (h->type == STT_GNU_IFUNC)
1946 elf_tdata (info->output_bfd)->has_gnu_symbols
1947 |= elf_gnu_symbol_ifunc;
71cb9464 1948 }
70256ad8 1949
6999821f
L		 1950 converted_reloc = FALSE;
1951 if ((r_type == R_X86_64_GOTPCREL
1952 || r_type == R_X86_64_GOTPCRELX
1953 || r_type == R_X86_64_REX_GOTPCRELX)
1954 && (h == NULL || h->type != STT_GNU_IFUNC))
1955 {
1956 Elf_Internal_Rela *irel = (Elf_Internal_Rela *) rel;
1957 if (!elf_x86_64_convert_load_reloc (abfd, contents, &r_type,
1958 irel, h, &converted_reloc,
1959 info))
1960 goto error_return;
5e5e02ae
L		 1961
1962 if (converted_reloc)
1963 converted = TRUE;
6999821f
L		 1964 }
1965
bedfd056 1966 if (! elf_x86_64_tls_transition (info, abfd, sec, contents,
351f65ca
L		 1967 symtab_hdr, sym_hashes,
1968 &r_type, GOT_UNKNOWN,
bedfd056 1969 rel, rel_end, h, r_symndx, FALSE))
afd9acee 1970 goto error_return;
142411ca 1971
cd048363
L		 1972 /* Check if _GLOBAL_OFFSET_TABLE_ is referenced. */
1973 if (h == htab->elf.hgot)
1974 htab->got_referenced = TRUE;
1975
0afcef53 1976 eh = (struct elf_x86_link_hash_entry *) h;
bffbf940 1977 switch (r_type)
70256ad8 1978 {
bffbf940 1979 case R_X86_64_TLSLD:
0f09b4d8 1980 htab->tls_ld_or_ldm_got.refcount = 1;
bffbf940
JJ		 1981 goto create_got;
1982
1983 case R_X86_64_TPOFF32:
0e1862bb 1984 if (!bfd_link_executable (info) && ABI_64_P (abfd))
aab921ad 1985 return elf_x86_64_need_pic (info, abfd, sec, h, symtab_hdr, isym,
338c190a 1986 &x86_64_elf_howto_table[r_type]);
aec6b87e 1987 if (eh != NULL)
98b273dc 1988 eh->zero_undefweak &= 0x2;
bffbf940 1989 break;
c434dee6 1990
bffbf940 1991 case R_X86_64_GOTTPOFF:
0e1862bb 1992 if (!bfd_link_executable (info))
bffbf940
JJ		 1993 info->flags |= DF_STATIC_TLS;
1994 /* Fall through */
70256ad8 1995
bffbf940
JJ		 1996 case R_X86_64_GOT32:
1997 case R_X86_64_GOTPCREL:
56ceb5b5
L		 1998 case R_X86_64_GOTPCRELX:
1999 case R_X86_64_REX_GOTPCRELX:
bffbf940 2000 case R_X86_64_TLSGD:
7b81dfbb
AJ		 2001 case R_X86_64_GOT64:
2002 case R_X86_64_GOTPCREL64:
2003 case R_X86_64_GOTPLT64:
67a4f2b7
AO		 2004 case R_X86_64_GOTPC32_TLSDESC:
2005 case R_X86_64_TLSDESC_CALL:
bffbf940
JJ		 2006 /* This symbol requires a global offset table entry. */
2007 {
2008 int tls_type, old_tls_type;
2009
2010 switch (r_type)
2011 {
2012 default: tls_type = GOT_NORMAL; break;
2013 case R_X86_64_TLSGD: tls_type = GOT_TLS_GD; break;
2014 case R_X86_64_GOTTPOFF: tls_type = GOT_TLS_IE; break;
67a4f2b7
AO		 2015 case R_X86_64_GOTPC32_TLSDESC:
2016 case R_X86_64_TLSDESC_CALL:
2017 tls_type = GOT_TLS_GDESC; break;
bffbf940
JJ		 2018 }
2019
2020 if (h != NULL)
2021 {
0f09b4d8 2022 h->got.refcount = 1;
aec6b87e 2023 old_tls_type = eh->tls_type;
bffbf940
JJ		 2024 }
2025 else
2026 {
2027 bfd_signed_vma *local_got_refcounts;
2028
2029 /* This is a global offset table entry for a local symbol. */
2030 local_got_refcounts = elf_local_got_refcounts (abfd);
2031 if (local_got_refcounts == NULL)
2032 {
2033 bfd_size_type size;
2034
2035 size = symtab_hdr->sh_info;
67a4f2b7
AO		 2036 size *= sizeof (bfd_signed_vma)
2037 + sizeof (bfd_vma) + sizeof (char);
bffbf940
JJ		 2038 local_got_refcounts = ((bfd_signed_vma *)
2039 bfd_zalloc (abfd, size));
2040 if (local_got_refcounts == NULL)
afd9acee 2041 goto error_return;
bffbf940 2042 elf_local_got_refcounts (abfd) = local_got_refcounts;
0afcef53 2043 elf_x86_local_tlsdesc_gotent (abfd)
67a4f2b7 2044 = (bfd_vma *) (local_got_refcounts + symtab_hdr->sh_info);
0afcef53 2045 elf_x86_local_got_tls_type (abfd)
67a4f2b7 2046 = (char *) (local_got_refcounts + 2 * symtab_hdr->sh_info);
bffbf940 2047 }
0f09b4d8 2048 local_got_refcounts[r_symndx] = 1;
bffbf940 2049 old_tls_type
0afcef53 2050 = elf_x86_local_got_tls_type (abfd) [r_symndx];
bffbf940
JJ		 2051 }
2052
2053 /* If a TLS symbol is accessed using IE at least once,
2054 there is no point to use dynamic model for it. */
2055 if (old_tls_type != tls_type && old_tls_type != GOT_UNKNOWN
67a4f2b7
AO		 2056 && (! GOT_TLS_GD_ANY_P (old_tls_type)
2057 || tls_type != GOT_TLS_IE))
bffbf940 2058 {
67a4f2b7 2059 if (old_tls_type == GOT_TLS_IE && GOT_TLS_GD_ANY_P (tls_type))
bffbf940 2060 tls_type = old_tls_type;
67a4f2b7
AO		 2061 else if (GOT_TLS_GD_ANY_P (old_tls_type)
2062 && GOT_TLS_GD_ANY_P (tls_type))
2063 tls_type |= old_tls_type;
bffbf940
JJ		 2064 else
2065 {
09a24cbf 2066 if (h)
4c544807
L		 2067 name = h->root.root.string;
2068 else
2069 name = bfd_elf_sym_name (abfd, symtab_hdr,
2070 isym, NULL);
4eca0228 2071 _bfd_error_handler
695344c0 2072 /* xgettext:c-format */
871b3ab2 2073 (_("%pB: '%s' accessed both as normal and"
63a5468a 2074 " thread local symbol"),
4c544807 2075 abfd, name);
68c4a57e 2076 bfd_set_error (bfd_error_bad_value);
afd9acee 2077 goto error_return;
bffbf940
JJ		 2078 }
2079 }
2080
2081 if (old_tls_type != tls_type)
2082 {
aec6b87e
L		 2083 if (eh != NULL)
2084 eh->tls_type = tls_type;
bffbf940 2085 else
0afcef53 2086 elf_x86_local_got_tls_type (abfd) [r_symndx] = tls_type;
bffbf940
JJ		 2087 }
2088 }
c434dee6
AJ		 2089 /* Fall through */
2090
d6ab8113
JB		 2091 case R_X86_64_GOTOFF64:
2092 case R_X86_64_GOTPC32:
7b81dfbb 2093 case R_X86_64_GOTPC64:
bffbf940 2094 create_got:
aec6b87e 2095 if (eh != NULL)
98b273dc 2096 eh->zero_undefweak &= 0x2;
70256ad8
AJ		 2097 break;
2098
2099 case R_X86_64_PLT32:
c3320543 2100 case R_X86_64_PLT32_BND:
70256ad8 2101 /* This symbol requires a procedure linkage table entry. We
407443a3
AJ		 2102 actually build the entry in adjust_dynamic_symbol,
2103 because this might be a case of linking PIC code which is
2104 never referenced by a dynamic object, in which case we
2105 don't need to generate a procedure linkage table entry
2106 after all. */
70256ad8
AJ		 2107
2108 /* If this is a local symbol, we resolve it directly without
407443a3 2109 creating a procedure linkage table entry. */
70256ad8
AJ		 2110 if (h == NULL)
2111 continue;
2112
98b273dc 2113 eh->zero_undefweak &= 0x2;
f5385ebf 2114 h->needs_plt = 1;
79b0c981 2115 h->plt.refcount = 1;
70256ad8
AJ		 2116 break;
2117
7b81dfbb
AJ		 2118 case R_X86_64_PLTOFF64:
2119 /* This tries to form the 'address' of a function relative
2120 to GOT. For global symbols we need a PLT entry. */
2121 if (h != NULL)
2122 {
2123 h->needs_plt = 1;
79b0c981 2124 h->plt.refcount = 1;
7b81dfbb
AJ		 2125 }
2126 goto create_got;
2127
6a3e1bae
L		 2128 case R_X86_64_SIZE32:
2129 case R_X86_64_SIZE64:
06a6a421 2130 size_reloc = TRUE;
6a3e1bae
L		 2131 goto do_size;
2132
248775ba
L		 2133 case R_X86_64_32:
2134 if (!ABI_64_P (abfd))
2135 goto pointer;
1a0670f3 2136 /* Fall through. */
cc78d0af
AJ		 2137 case R_X86_64_8:
2138 case R_X86_64_16:
70256ad8 2139 case R_X86_64_32S:
338c190a
L		 2140 /* Check relocation overflow as these relocs may lead to
2141 run-time relocation overflow. Don't error out for
1b71fb54 2142 sections we don't care about, such as debug sections or
338c190a 2143 when relocation overflow check is disabled. */
4c10bbaa 2144 if (!info->no_reloc_overflow_check
6999821f 2145 && !converted_reloc
338c190a
L		 2146 && (bfd_link_pic (info)
2147 || (bfd_link_executable (info)
2148 && h != NULL
2149 && !h->def_regular
2150 && h->def_dynamic
081b1afe 2151 && (sec->flags & SEC_READONLY) == 0)))
aab921ad 2152 return elf_x86_64_need_pic (info, abfd, sec, h, symtab_hdr, isym,
338c190a 2153 &x86_64_elf_howto_table[r_type]);
1b71fb54
AJ		 2154 /* Fall through. */
2155
c434dee6
AJ		 2156 case R_X86_64_PC8:
2157 case R_X86_64_PC16:
70256ad8 2158 case R_X86_64_PC32:
c3320543 2159 case R_X86_64_PC32_BND:
d6ab8113 2160 case R_X86_64_PC64:
1b71fb54 2161 case R_X86_64_64:
248775ba 2162pointer:
aec6b87e 2163 if (eh != NULL && (sec->flags & SEC_CODE) != 0)
98b273dc 2164 eh->zero_undefweak |= 0x2;
bf52d7c7
L		 2165 /* We are called after all symbols have been resolved. Only
2166 relocation against STT_GNU_IFUNC symbol must go through
2167 PLT. */
d1ed1c7d
L		 2168 if (h != NULL
2169 && (bfd_link_executable (info)
bf52d7c7 2170 || h->type == STT_GNU_IFUNC))
c434dee6 2171 {
79b0c981 2172 bfd_boolean func_pointer_ref = FALSE;
233cc9c1 2173
5db4f0d3
L		 2174 if (r_type == R_X86_64_PC32)
2175 {
2176 /* Since something like ".long foo - ." may be used
2177 as pointer, make sure that PLT is used if foo is
2178 a function defined in a shared library. */
2179 if ((sec->flags & SEC_CODE) == 0)
451875b4
L		 2180 {
2181 h->pointer_equality_needed = 1;
2182 if (bfd_link_pie (info)
2183 && h->type == STT_FUNC
2184 && !h->def_regular
2185 && h->def_dynamic)
2186 {
2187 h->needs_plt = 1;
2188 h->plt.refcount = 1;
2189 }
2190 }
5db4f0d3
L		 2191 }
2192 else if (r_type != R_X86_64_PC32_BND
2193 && r_type != R_X86_64_PC64)
04ebc307
L		 2194 {
2195 h->pointer_equality_needed = 1;
2196 /* At run-time, R_X86_64_64 can be resolved for both
2197 x86-64 and x32. But R_X86_64_32 and R_X86_64_32S
2198 can only be resolved for x32. */
2199 if ((sec->flags & SEC_READONLY) == 0
2200 && (r_type == R_X86_64_64
2201 || (!ABI_64_P (abfd)
2202 && (r_type == R_X86_64_32
2203 || r_type == R_X86_64_32S))))
79b0c981
L		 2204 func_pointer_ref = TRUE;
2205 }
2206
2207 if (!func_pointer_ref)
2208 {
2209 /* If this reloc is in a read-only section, we might
2210 need a copy reloc. We can't check reliably at this
2211 stage whether the section is read-only, as input
2212 sections have not yet been mapped to output sections.
2213 Tentatively set the flag for now, and correct in
2214 adjust_dynamic_symbol. */
2215 h->non_got_ref = 1;
2216
2217 /* We may need a .plt entry if the symbol is a function
2218 defined in a shared lib or is a function referenced
2219 from the code or read-only section. */
2220 if (!h->def_regular
2221 || (sec->flags & (SEC_CODE | SEC_READONLY)) != 0)
2222 h->plt.refcount = 1;
04ebc307 2223 }
c434dee6 2224 }
70256ad8 2225
06a6a421 2226 size_reloc = FALSE;
6a3e1bae 2227do_size:
451875b4 2228 if (NEED_DYNAMIC_RELOCATION_P (info, TRUE, h, sec, r_type,
daf1c414 2229 htab->pointer_r_type))
70256ad8 2230 {
e03a8ed8
L		 2231 struct elf_dyn_relocs *p;
2232 struct elf_dyn_relocs **head;
c434dee6
AJ		 2233
2234 /* We must copy these reloc types into the output file.
2235 Create a reloc section in dynobj and make room for
2236 this reloc. */
70256ad8
AJ		 2237 if (sreloc == NULL)
2238 {
83bac4b0 2239 sreloc = _bfd_elf_make_dynamic_reloc_section
82e96e07
L		 2240 (sec, htab->elf.dynobj, ABI_64_P (abfd) ? 3 : 2,
2241 abfd, /*rela?*/ TRUE);
70256ad8 2242
70256ad8 2243 if (sreloc == NULL)
afd9acee 2244 goto error_return;
70256ad8
AJ		 2245 }
2246
c434dee6
AJ		 2247 /* If this is a global symbol, we count the number of
2248 relocations we need for this symbol. */
2249 if (h != NULL)
aec6b87e 2250 head = &eh->dyn_relocs;
c434dee6
AJ		 2251 else
2252 {
2253 /* Track dynamic relocs needed for local syms too.
2254 We really need local syms available to do this
2255 easily. Oh well. */
c434dee6 2256 asection *s;
87d72d41 2257 void **vpp;
87d72d41
AM		 2258
2259 isym = bfd_sym_from_r_symndx (&htab->sym_cache,
2260 abfd, r_symndx);
2261 if (isym == NULL)
afd9acee 2262 goto error_return;
87d72d41
AM		 2263
2264 s = bfd_section_from_elf_index (abfd, isym->st_shndx);
c434dee6 2265 if (s == NULL)
87d72d41 2266 s = sec;
70256ad8 2267
e81d3500
DD		 2268 /* Beware of type punned pointers vs strict aliasing
2269 rules. */
2270 vpp = &(elf_section_data (s)->local_dynrel);
e03a8ed8 2271 head = (struct elf_dyn_relocs **)vpp;
c434dee6 2272 }
70256ad8 2273
c434dee6
AJ		 2274 p = *head;
2275 if (p == NULL || p->sec != sec)
2276 {
2277 bfd_size_type amt = sizeof *p;
d8045f23 2278
e03a8ed8 2279 p = ((struct elf_dyn_relocs *)
c434dee6 2280 bfd_alloc (htab->elf.dynobj, amt));
70256ad8 2281 if (p == NULL)
afd9acee 2282 goto error_return;
c434dee6
AJ		 2283 p->next = *head;
2284 *head = p;
2285 p->sec = sec;
2286 p->count = 0;
2287 p->pc_count = 0;
70256ad8 2288 }
c434dee6
AJ		 2289
2290 p->count += 1;
06a6a421 2291 /* Count size relocation as PC-relative relocation. */
daf1c414 2292 if (X86_PCREL_TYPE_P (r_type) || size_reloc)
c434dee6 2293 p->pc_count += 1;
70256ad8
AJ		 2294 }
2295 break;
fe4770f4
AJ		 2296
2297 /* This relocation describes the C++ object vtable hierarchy.
2298 Reconstruct it for later use during GC. */
2299 case R_X86_64_GNU_VTINHERIT:
c152c796 2300 if (!bfd_elf_gc_record_vtinherit (abfd, sec, h, rel->r_offset))
afd9acee 2301 goto error_return;
fe4770f4
AJ		 2302 break;
2303
2304 /* This relocation describes which C++ vtable entries are actually
2305 used. Record for later use during GC. */
2306 case R_X86_64_GNU_VTENTRY:
d17e0c6e
JB		 2307 BFD_ASSERT (h != NULL);
2308 if (h != NULL
2309 && !bfd_elf_gc_record_vtentry (abfd, sec, h, rel->r_addend))
afd9acee 2310 goto error_return;
fe4770f4 2311 break;
c434dee6
AJ		 2312
2313 default:
2314 break;
70256ad8
AJ		 2315 }
2316 }
2317
bedfd056
L		 2318 if (elf_section_data (sec)->this_hdr.contents != contents)
2319 {
5e5e02ae 2320 if (!converted && !info->keep_memory)
bedfd056
L		 2321 free (contents);
2322 else
2323 {
5e5e02ae
L		 2324 /* Cache the section contents for elf_link_input_bfd if any
2325 load is converted or --no-keep-memory isn't used. */
bedfd056
L		 2326 elf_section_data (sec)->this_hdr.contents = contents;
2327 }
2328 }
2329
5e5e02ae
L		 2330 /* Cache relocations if any load is converted. */
2331 if (elf_section_data (sec)->relocs != relocs && converted)
2332 elf_section_data (sec)->relocs = (Elf_Internal_Rela *) relocs;
2333
b34976b6 2334 return TRUE;
afd9acee
L		 2335
2336error_return:
bedfd056
L		 2337 if (elf_section_data (sec)->this_hdr.contents != contents)
2338 free (contents);
afd9acee
L		 2339 sec->check_relocs_failed = 1;
2340 return FALSE;
70256ad8
AJ		 2341}
2342
bffbf940
JJ		 2343/* Return the relocation value for @tpoff relocation
2344 if STT_TLS virtual address is ADDRESS. */
2345
2346static bfd_vma
351f65ca 2347elf_x86_64_tpoff (struct bfd_link_info *info, bfd_vma address)
bffbf940 2348{
e1918d23 2349 struct elf_link_hash_table *htab = elf_hash_table (info);
7dc98aea
RO		 2350 const struct elf_backend_data *bed = get_elf_backend_data (info->output_bfd);
2351 bfd_vma static_tls_size;
bffbf940
JJ		 2352
2353 /* If tls_segment is NULL, we should have signalled an error already. */
e1918d23 2354 if (htab->tls_sec == NULL)
bffbf940 2355 return 0;
7dc98aea
RO		 2356
2357 /* Consider special static TLS alignment requirements. */
2358 static_tls_size = BFD_ALIGN (htab->tls_size, bed->static_tls_alignment);
2359 return address - static_tls_size - htab->tls_sec->vma;
bffbf940
JJ		 2360}
2361
8d88c4ca
NC		 2362/* Relocate an x86_64 ELF section. */
2363
b34976b6 2364static bfd_boolean
351f65ca
L		 2365elf_x86_64_relocate_section (bfd *output_bfd,
2366 struct bfd_link_info *info,
2367 bfd *input_bfd,
2368 asection *input_section,
2369 bfd_byte *contents,
2370 Elf_Internal_Rela *relocs,
2371 Elf_Internal_Sym *local_syms,
2372 asection **local_sections)
8d88c4ca 2373{
0afcef53 2374 struct elf_x86_link_hash_table *htab;
8d88c4ca
NC		 2375 Elf_Internal_Shdr *symtab_hdr;
2376 struct elf_link_hash_entry **sym_hashes;
2377 bfd_vma *local_got_offsets;
67a4f2b7 2378 bfd_vma *local_tlsdesc_gotents;
c434dee6 2379 Elf_Internal_Rela *rel;
60f2e42e 2380 Elf_Internal_Rela *wrel;
8d88c4ca 2381 Elf_Internal_Rela *relend;
38b12349 2382 unsigned int plt_entry_size;
8d88c4ca 2383
338c190a
L		 2384 /* Skip if check_relocs failed. */
2385 if (input_section->check_relocs_failed)
2386 return FALSE;
2387
0afcef53 2388 htab = elf_x86_hash_table (info, X86_64_ELF_DATA);
4dfe6ac6
NC		 2389 if (htab == NULL)
2390 return FALSE;
fe53b4a4 2391
7af5d5c4
AM		 2392 if (!is_x86_elf (input_bfd, htab))
2393 {
2394 bfd_set_error (bfd_error_wrong_format);
2395 return FALSE;
2396 }
fe53b4a4 2397
765e526c 2398 plt_entry_size = htab->plt.plt_entry_size;
0ffa91dd 2399 symtab_hdr = &elf_symtab_hdr (input_bfd);
8d88c4ca
NC		 2400 sym_hashes = elf_sym_hashes (input_bfd);
2401 local_got_offsets = elf_local_got_offsets (input_bfd);
0afcef53 2402 local_tlsdesc_gotents = elf_x86_local_tlsdesc_gotent (input_bfd);
8d88c4ca 2403
0afcef53 2404 _bfd_x86_elf_set_tls_module_base (info);
9f03412a 2405
60f2e42e 2406 rel = wrel = relocs;
8d88c4ca 2407 relend = relocs + input_section->reloc_count;
60f2e42e 2408 for (; rel < relend; wrel++, rel++)
8d88c4ca 2409 {
419414ea 2410 unsigned int r_type, r_type_tls;
8d88c4ca
NC		 2411 reloc_howto_type *howto;
2412 unsigned long r_symndx;
2413 struct elf_link_hash_entry *h;
0afcef53 2414 struct elf_x86_link_hash_entry *eh;
8d88c4ca
NC		 2415 Elf_Internal_Sym *sym;
2416 asection *sec;
0ff2b86e 2417 bfd_vma off, offplt, plt_offset;
8d88c4ca 2418 bfd_vma relocation;
b34976b6 2419 bfd_boolean unresolved_reloc;
8d88c4ca 2420 bfd_reloc_status_type r;
bffbf940 2421 int tls_type;
0ff2b86e 2422 asection *base_got, *resolved_plt;
1788fc08 2423 bfd_vma st_size;
aec6b87e 2424 bfd_boolean resolved_to_zero;
9e9821dd 2425 bfd_boolean relative_reloc;
78984959 2426 bfd_boolean converted_reloc;
aebcc8ff 2427 bfd_boolean need_copy_reloc_in_pie;
8d88c4ca 2428
351f65ca 2429 r_type = ELF32_R_TYPE (rel->r_info);
fe4770f4
AJ		 2430 if (r_type == (int) R_X86_64_GNU_VTINHERIT
2431 || r_type == (int) R_X86_64_GNU_VTENTRY)
18954b29
L		 2432 {
2433 if (wrel != rel)
2434 *wrel = *rel;
2435 continue;
2436 }
8d88c4ca 2437
b638b5d5 2438 r_symndx = htab->r_sym (rel->r_info);
78984959 2439 converted_reloc = (r_type & R_X86_64_converted_reloc_bit) != 0;
b638b5d5
L		 2440 if (converted_reloc)
2441 {
2442 r_type &= ~R_X86_64_converted_reloc_bit;
2443 rel->r_info = htab->r_info (r_symndx, r_type);
2444 }
78984959 2445
76268e02
L		 2446 howto = elf_x86_64_rtype_to_howto (input_bfd, r_type);
2447 if (howto == NULL)
47aeb64c 2448 return _bfd_unrecognized_reloc (input_bfd, input_section, r_type);
8d88c4ca 2449
8d88c4ca
NC		 2450 h = NULL;
2451 sym = NULL;
2452 sec = NULL;
b34976b6 2453 unresolved_reloc = FALSE;
8d88c4ca 2454 if (r_symndx < symtab_hdr->sh_info)
8da6118f
KH		 2455 {
2456 sym = local_syms + r_symndx;
2457 sec = local_sections[r_symndx];
c434dee6 2458
c25bc9fc
L		 2459 relocation = _bfd_elf_rela_local_sym (output_bfd, sym,
2460 &sec, rel);
1788fc08 2461 st_size = sym->st_size;
c25bc9fc
L		 2462
2463 /* Relocate against local STT_GNU_IFUNC symbol. */
0e1862bb 2464 if (!bfd_link_relocatable (info)
351f65ca 2465 && ELF_ST_TYPE (sym->st_info) == STT_GNU_IFUNC)
c25bc9fc 2466 {
0afcef53
L		 2467 h = _bfd_elf_x86_get_local_sym_hash (htab, input_bfd,
2468 rel, FALSE);
c25bc9fc
L		 2469 if (h == NULL)
2470 abort ();
2471
eed180f8 2472 /* Set STT_GNU_IFUNC symbol value. */
c25bc9fc
L		 2473 h->root.u.def.value = sym->st_value;
2474 h->root.u.def.section = sec;
2475 }
8da6118f 2476 }
8d88c4ca 2477 else
8da6118f 2478 {
c9736ba0 2479 bfd_boolean warned ATTRIBUTE_UNUSED;
62d887d4 2480 bfd_boolean ignored ATTRIBUTE_UNUSED;
c434dee6 2481
b2a8e766
AM		 2482 RELOC_FOR_GLOBAL_SYMBOL (info, input_bfd, input_section, rel,
2483 r_symndx, symtab_hdr, sym_hashes,
2484 h, sec, relocation,
62d887d4 2485 unresolved_reloc, warned, ignored);
1788fc08 2486 st_size = h->size;
8da6118f 2487 }
ab96bf03 2488
dbaa2011 2489 if (sec != NULL && discarded_section (sec))
60f2e42e
L		 2490 {
2491 _bfd_clear_contents (howto, input_bfd, input_section,
0930cb30 2492 contents, rel->r_offset);
60f2e42e
L		 2493 wrel->r_offset = rel->r_offset;
2494 wrel->r_info = 0;
2495 wrel->r_addend = 0;
2496
2497 /* For ld -r, remove relocations in debug sections against
2498 sections defined in discarded sections. Not done for
2499 eh_frame editing code expects to be present. */
2500 if (bfd_link_relocatable (info)
2501 && (input_section->flags & SEC_DEBUGGING))
2502 wrel--;
2503
2504 continue;
2505 }
ab96bf03 2506
0e1862bb 2507 if (bfd_link_relocatable (info))
2d5da473
L		 2508 {
2509 if (wrel != rel)
2510 *wrel = *rel;
2511 continue;
2512 }
ab96bf03 2513
1788fc08 2514 if (rel->r_addend == 0 && !ABI_64_P (output_bfd))
64d25c44 2515 {
1788fc08
L		 2516 if (r_type == R_X86_64_64)
2517 {
2518 /* For x32, treat R_X86_64_64 like R_X86_64_32 and
2519 zero-extend it to 64bit if addend is zero. */
2520 r_type = R_X86_64_32;
2521 memset (contents + rel->r_offset + 4, 0, 4);
2522 }
2523 else if (r_type == R_X86_64_SIZE64)
2524 {
2525 /* For x32, treat R_X86_64_SIZE64 like R_X86_64_SIZE32 and
2526 zero-extend it to 64bit if addend is zero. */
2527 r_type = R_X86_64_SIZE32;
2528 memset (contents + rel->r_offset + 4, 0, 4);
2529 }
64d25c44
L		 2530 }
2531
0afcef53 2532 eh = (struct elf_x86_link_hash_entry *) h;
0ff2b86e 2533
cbe950e9
L		 2534 /* Since STT_GNU_IFUNC symbol must go through PLT, we handle
2535 it here if it is defined in a non-shared object. */
2536 if (h != NULL
2537 && h->type == STT_GNU_IFUNC
2538 && h->def_regular)
2539 {
cbe950e9 2540 bfd_vma plt_index;
4c544807 2541 const char *name;
cbe950e9 2542
97dc35c8
L		 2543 if ((input_section->flags & SEC_ALLOC) == 0)
2544 {
347a8774
L		 2545 /* If this is a SHT_NOTE section without SHF_ALLOC, treat
2546 STT_GNU_IFUNC symbol as STT_FUNC. */
2547 if (elf_section_type (input_section) == SHT_NOTE)
2548 goto skip_ifunc;
97dc35c8
L		 2549 /* Dynamic relocs are not propagated for SEC_DEBUGGING
2550 sections because such sections are not SEC_ALLOC and
2551 thus ld.so will not process them. */
2552 if ((input_section->flags & SEC_DEBUGGING) != 0)
0eace210 2553 continue;
97dc35c8
L		 2554 abort ();
2555 }
233cc9c1
L		 2556
2557 switch (r_type)
2558 {
2559 default:
2560 break;
2561
2562 case R_X86_64_GOTPCREL:
2563 case R_X86_64_GOTPCRELX:
2564 case R_X86_64_REX_GOTPCRELX:
2565 case R_X86_64_GOTPCREL64:
2566 base_got = htab->elf.sgot;
2567 off = h->got.offset;
2568
2569 if (base_got == NULL)
2570 abort ();
2571
2572 if (off == (bfd_vma) -1)
2573 {
2574 /* We can't use h->got.offset here to save state, or
2575 even just remember the offset, as finish_dynamic_symbol
2576 would use that as offset into .got. */
2577
2578 if (h->plt.offset == (bfd_vma) -1)
2579 abort ();
2580
2581 if (htab->elf.splt != NULL)
2582 {
38b12349 2583 plt_index = (h->plt.offset / plt_entry_size
765e526c 2584 - htab->plt.has_plt0);
233cc9c1
L		 2585 off = (plt_index + 3) * GOT_ENTRY_SIZE;
2586 base_got = htab->elf.sgotplt;
2587 }
2588 else
2589 {
2590 plt_index = h->plt.offset / plt_entry_size;
2591 off = plt_index * GOT_ENTRY_SIZE;
2592 base_got = htab->elf.igotplt;
2593 }
2594
2595 if (h->dynindx == -1
2596 || h->forced_local
2597 || info->symbolic)
2598 {
2599 /* This references the local defitionion. We must
2600 initialize this entry in the global offset table.
2601 Since the offset must always be a multiple of 8,
2602 we use the least significant bit to record
2603 whether we have initialized it already.
2604
2605 When doing a dynamic link, we create a .rela.got
2606 relocation entry to initialize the value. This
2607 is done in the finish_dynamic_symbol routine. */
2608 if ((off & 1) != 0)
2609 off &= ~1;
2610 else
2611 {
2612 bfd_put_64 (output_bfd, relocation,
2613 base_got->contents + off);
2614 /* Note that this is harmless for the GOTPLT64
2615 case, as -1 | 1 still is -1. */
2616 h->got.offset |= 1;
2617 }
2618 }
2619 }
2620
2621 relocation = (base_got->output_section->vma
2622 + base_got->output_offset + off);
2623
2624 goto do_relocation;
2625 }
2626
2627 if (h->plt.offset == (bfd_vma) -1)
2628 {
2629 /* Handle static pointers of STT_GNU_IFUNC symbols. */
2630 if (r_type == htab->pointer_r_type
2631 && (input_section->flags & SEC_CODE) == 0)
2632 goto do_ifunc_pointer;
2633 goto bad_ifunc_reloc;
2634 }
cbe950e9
L		 2635
2636 /* STT_GNU_IFUNC symbol must go through PLT. */
0ff2b86e
L		 2637 if (htab->elf.splt != NULL)
2638 {
f2c29a16 2639 if (htab->plt_second != NULL)
0ff2b86e 2640 {
f2c29a16
L		 2641 resolved_plt = htab->plt_second;
2642 plt_offset = eh->plt_second.offset;
0ff2b86e
L		 2643 }
2644 else
2645 {
2646 resolved_plt = htab->elf.splt;
2647 plt_offset = h->plt.offset;
2648 }
2649 }
2650 else
2651 {
2652 resolved_plt = htab->elf.iplt;
2653 plt_offset = h->plt.offset;
2654 }
2655
2656 relocation = (resolved_plt->output_section->vma
2657 + resolved_plt->output_offset + plt_offset);
cbe950e9
L		 2658
2659 switch (r_type)
2660 {
2661 default:
233cc9c1 2662bad_ifunc_reloc:
4c544807
L		 2663 if (h->root.root.string)
2664 name = h->root.root.string;
2665 else
2666 name = bfd_elf_sym_name (input_bfd, symtab_hdr, sym,
2667 NULL);
4eca0228 2668 _bfd_error_handler
695344c0 2669 /* xgettext:c-format */
871b3ab2 2670 (_("%pB: relocation %s against STT_GNU_IFUNC "
233cc9c1
L		 2671 "symbol `%s' isn't supported"), input_bfd,
2672 howto->name, name);
cbe950e9
L		 2673 bfd_set_error (bfd_error_bad_value);
2674 return FALSE;
2675
2676 case R_X86_64_32S:
0e1862bb 2677 if (bfd_link_pic (info))
cbe950e9 2678 abort ();
710ab287
L		 2679 goto do_relocation;
2680
248775ba
L		 2681 case R_X86_64_32:
2682 if (ABI_64_P (output_bfd))
2683 goto do_relocation;
17672001 2684 /* FALLTHROUGH */
eed180f8 2685 case R_X86_64_64:
233cc9c1 2686do_ifunc_pointer:
710ab287
L		 2687 if (rel->r_addend != 0)
2688 {
4c544807
L		 2689 if (h->root.root.string)
2690 name = h->root.root.string;
2691 else
2692 name = bfd_elf_sym_name (input_bfd, symtab_hdr,
2693 sym, NULL);
4eca0228 2694 _bfd_error_handler
695344c0 2695 /* xgettext:c-format */
871b3ab2 2696 (_("%pB: relocation %s against STT_GNU_IFUNC "
2dcf00ce
AM		 2697 "symbol `%s' has non-zero addend: %" PRId64),
2698 input_bfd, howto->name, name, (int64_t) rel->r_addend);
710ab287
L		 2699 bfd_set_error (bfd_error_bad_value);
2700 return FALSE;
2701 }
2702
2703 /* Generate dynamic relcoation only when there is a
233cc9c1
L		 2704 non-GOT reference in a shared object or there is no
2705 PLT. */
2706 if ((bfd_link_pic (info) && h->non_got_ref)
2707 || h->plt.offset == (bfd_vma) -1)
710ab287
L		 2708 {
2709 Elf_Internal_Rela outrel;
710ab287
L		 2710 asection *sreloc;
2711
c25bc9fc
L		 2712 /* Need a dynamic relocation to get the real function
2713 address. */
710ab287
L		 2714 outrel.r_offset = _bfd_elf_section_offset (output_bfd,
2715 info,
2716 input_section,
2717 rel->r_offset);
2718 if (outrel.r_offset == (bfd_vma) -1
2719 || outrel.r_offset == (bfd_vma) -2)
2720 abort ();
2721
2722 outrel.r_offset += (input_section->output_section->vma
2723 + input_section->output_offset);
2724
cf1070f1 2725 if (POINTER_LOCAL_IFUNC_P (info, h))
710ab287 2726 {
871b3ab2 2727 info->callbacks->minfo (_("Local IFUNC function `%s' in %pB\n"),
6322e5c5
L		 2728 h->root.root.string,
2729 h->root.u.def.section->owner);
2730
710ab287 2731 /* This symbol is resolved locally. */
56b8aada
L		 2732 outrel.r_info = htab->r_info (0, R_X86_64_IRELATIVE);
2733 outrel.r_addend = (h->root.u.def.value
2734 + h->root.u.def.section->output_section->vma
2735 + h->root.u.def.section->output_offset);
710ab287
L		 2736 }
2737 else
2738 {
351f65ca 2739 outrel.r_info = htab->r_info (h->dynindx, r_type);
710ab287
L		 2740 outrel.r_addend = 0;
2741 }
2742
233cc9c1
L		 2743 /* Dynamic relocations are stored in
2744 1. .rela.ifunc section in PIC object.
2745 2. .rela.got section in dynamic executable.
2746 3. .rela.iplt section in static executable. */
2747 if (bfd_link_pic (info))
2748 sreloc = htab->elf.irelifunc;
2749 else if (htab->elf.splt != NULL)
2750 sreloc = htab->elf.srelgot;
2751 else
2752 sreloc = htab->elf.irelplt;
351f65ca 2753 elf_append_rela (output_bfd, sreloc, &outrel);
710ab287
L		 2754
2755 /* If this reloc is against an external symbol, we
2756 do not want to fiddle with the addend. Otherwise,
2757 we need to include the symbol value so that it
2758 becomes an addend for the dynamic reloc. For an
2759 internal symbol, we have updated addend. */
56b8aada 2760 continue;
710ab287 2761 }
17672001 2762 /* FALLTHROUGH */
cbe950e9 2763 case R_X86_64_PC32:
c3320543 2764 case R_X86_64_PC32_BND:
cbe950e9
L		 2765 case R_X86_64_PC64:
2766 case R_X86_64_PLT32:
c3320543 2767 case R_X86_64_PLT32_BND:
cbe950e9 2768 goto do_relocation;
cbe950e9
L		 2769 }
2770 }
2771
347a8774 2772skip_ifunc:
aec6b87e 2773 resolved_to_zero = (eh != NULL
c5bce5c6 2774 && UNDEFINED_WEAK_RESOLVED_TO_ZERO (info, eh));
aec6b87e 2775
70256ad8
AJ		 2776 /* When generating a shared object, the relocations handled here are
2777 copied into the output file to be resolved at run time. */
2778 switch (r_type)
2779 {
2780 case R_X86_64_GOT32:
7b81dfbb 2781 case R_X86_64_GOT64:
70256ad8
AJ		 2782 /* Relocation is to the entry for this symbol in the global
2783 offset table. */
70256ad8 2784 case R_X86_64_GOTPCREL:
56ceb5b5
L		 2785 case R_X86_64_GOTPCRELX:
2786 case R_X86_64_REX_GOTPCRELX:
7b81dfbb
AJ		 2787 case R_X86_64_GOTPCREL64:
2788 /* Use global offset table entry as symbol value. */
2789 case R_X86_64_GOTPLT64:
de194d85 2790 /* This is obsolete and treated the same as GOT64. */
6de2ae4a 2791 base_got = htab->elf.sgot;
7b81dfbb 2792
6de2ae4a 2793 if (htab->elf.sgot == NULL)
c434dee6 2794 abort ();
053579d7 2795
9e9821dd 2796 relative_reloc = FALSE;
51e0a107 2797 if (h != NULL)
70256ad8 2798 {
c434dee6 2799 off = h->got.offset;
7b81dfbb 2800 if (h->needs_plt
eed180f8 2801 && h->plt.offset != (bfd_vma)-1
7b81dfbb
AJ		 2802 && off == (bfd_vma)-1)
2803 {
2804 /* We can't use h->got.offset here to save
2805 state, or even just remember the offset, as
2806 finish_dynamic_symbol would use that as offset into
2807 .got. */
38b12349 2808 bfd_vma plt_index = (h->plt.offset / plt_entry_size
765e526c 2809 - htab->plt.has_plt0);
7b81dfbb 2810 off = (plt_index + 3) * GOT_ENTRY_SIZE;
6de2ae4a 2811 base_got = htab->elf.sgotplt;
7b81dfbb
AJ		 2812 }
2813
2eba97c2 2814 if (RESOLVED_LOCALLY_P (info, h, htab))
51e0a107 2815 {
2eba97c2
L		 2816 /* We must initialize this entry in the global offset
2817 table. Since the offset must always be a multiple
2818 of 8, we use the least significant bit to record
2819 whether we have initialized it already.
51e0a107
JH		 2820
2821 When doing a dynamic link, we create a .rela.got
407443a3
AJ		 2822 relocation entry to initialize the value. This is
2823 done in the finish_dynamic_symbol routine. */
51e0a107
JH		 2824 if ((off & 1) != 0)
2825 off &= ~1;
2826 else
2827 {
2828 bfd_put_64 (output_bfd, relocation,
7b81dfbb
AJ		 2829 base_got->contents + off);
2830 /* Note that this is harmless for the GOTPLT64 case,
eed180f8 2831 as -1 | 1 still is -1. */
51e0a107 2832 h->got.offset |= 1;
9e9821dd 2833
f70656b2 2834 if (GENERATE_RELATIVE_RELOC_P (info, h))
9e9821dd
L		 2835 {
2836 /* If this symbol isn't dynamic in PIC,
2837 generate R_X86_64_RELATIVE here. */
2838 eh->no_finish_dynamic_symbol = 1;
2839 relative_reloc = TRUE;
2840 }
51e0a107
JH		 2841 }
2842 }
053579d7 2843 else
b34976b6 2844 unresolved_reloc = FALSE;
70256ad8 2845 }
51e0a107
JH		 2846 else
2847 {
c434dee6
AJ		 2848 if (local_got_offsets == NULL)
2849 abort ();
51e0a107
JH		 2850
2851 off = local_got_offsets[r_symndx];
2852
2853 /* The offset must always be a multiple of 8. We use
407443a3
AJ		 2854 the least significant bit to record whether we have
2855 already generated the necessary reloc. */
51e0a107
JH		 2856 if ((off & 1) != 0)
2857 off &= ~1;
2858 else
2859 {
c434dee6 2860 bfd_put_64 (output_bfd, relocation,
7b81dfbb 2861 base_got->contents + off);
9e9821dd 2862 local_got_offsets[r_symndx] |= 1;
51e0a107 2863
0e1862bb 2864 if (bfd_link_pic (info))
9e9821dd 2865 relative_reloc = TRUE;
51e0a107 2866 }
51e0a107 2867 }
6a2bda3f 2868
9e9821dd
L		 2869 if (relative_reloc)
2870 {
2871 asection *s;
2872 Elf_Internal_Rela outrel;
2873
2874 /* We need to generate a R_X86_64_RELATIVE reloc
2875 for the dynamic linker. */
2876 s = htab->elf.srelgot;
2877 if (s == NULL)
2878 abort ();
2879
2880 outrel.r_offset = (base_got->output_section->vma
2881 + base_got->output_offset
2882 + off);
2883 outrel.r_info = htab->r_info (0, R_X86_64_RELATIVE);
2884 outrel.r_addend = relocation;
2885 elf_append_rela (output_bfd, s, &outrel);
2886 }
2887
c434dee6
AJ		 2888 if (off >= (bfd_vma) -2)
2889 abort ();
2890
7b81dfbb
AJ		 2891 relocation = base_got->output_section->vma
2892 + base_got->output_offset + off;
56ceb5b5
L		 2893 if (r_type != R_X86_64_GOTPCREL
2894 && r_type != R_X86_64_GOTPCRELX
2895 && r_type != R_X86_64_REX_GOTPCRELX
2896 && r_type != R_X86_64_GOTPCREL64)
6de2ae4a
L		 2897 relocation -= htab->elf.sgotplt->output_section->vma
2898 - htab->elf.sgotplt->output_offset;
c434dee6 2899
70256ad8
AJ		 2900 break;
2901
d6ab8113
JB		 2902 case R_X86_64_GOTOFF64:
2903 /* Relocation is relative to the start of the global offset
2904 table. */
2905
3d949995
L		 2906 /* Check to make sure it isn't a protected function or data
2907 symbol for shared library since it may not be local when
e3c0e327
L		 2908 used as function address or with copy relocation. We also
2909 need to make sure that a symbol is referenced locally. */
0e1862bb 2910 if (bfd_link_pic (info) && h)
d6ab8113 2911 {
e3c0e327
L		 2912 if (!h->def_regular)
2913 {
2914 const char *v;
2915
2916 switch (ELF_ST_VISIBILITY (h->other))
2917 {
2918 case STV_HIDDEN:
2919 v = _("hidden symbol");
2920 break;
2921 case STV_INTERNAL:
2922 v = _("internal symbol");
2923 break;
2924 case STV_PROTECTED:
2925 v = _("protected symbol");
2926 break;
2927 default:
2928 v = _("symbol");
2929 break;
2930 }
2931
4eca0228 2932 _bfd_error_handler
695344c0 2933 /* xgettext:c-format */
871b3ab2 2934 (_("%pB: relocation R_X86_64_GOTOFF64 against undefined %s"
63a5468a 2935 " `%s' can not be used when making a shared object"),
e3c0e327
L		 2936 input_bfd, v, h->root.root.string);
2937 bfd_set_error (bfd_error_bad_value);
2938 return FALSE;
2939 }
0e1862bb 2940 else if (!bfd_link_executable (info)
6999821f 2941 && !SYMBOL_REFERENCES_LOCAL_P (info, h)
e3c0e327
L		 2942 && (h->type == STT_FUNC
2943 || h->type == STT_OBJECT)
2944 && ELF_ST_VISIBILITY (h->other) == STV_PROTECTED)
2945 {
4eca0228 2946 _bfd_error_handler
695344c0 2947 /* xgettext:c-format */
871b3ab2 2948 (_("%pB: relocation R_X86_64_GOTOFF64 against protected %s"
63a5468a 2949 " `%s' can not be used when making a shared object"),
e3c0e327
L		 2950 input_bfd,
2951 h->type == STT_FUNC ? "function" : "data",
2952 h->root.root.string);
2953 bfd_set_error (bfd_error_bad_value);
d6ab8113 2954 return FALSE;
e3c0e327 2955 }
d6ab8113
JB		 2956 }
2957
2958 /* Note that sgot is not involved in this
2959 calculation. We always want the start of .got.plt. If we
2960 defined _GLOBAL_OFFSET_TABLE_ in a different way, as is
2961 permitted by the ABI, we might have to change this
2962 calculation. */
6de2ae4a
L		 2963 relocation -= htab->elf.sgotplt->output_section->vma
2964 + htab->elf.sgotplt->output_offset;
d6ab8113
JB		 2965 break;
2966
2967 case R_X86_64_GOTPC32:
7b81dfbb 2968 case R_X86_64_GOTPC64:
d6ab8113 2969 /* Use global offset table as symbol value. */
6de2ae4a
L		 2970 relocation = htab->elf.sgotplt->output_section->vma
2971 + htab->elf.sgotplt->output_offset;
d6ab8113
JB		 2972 unresolved_reloc = FALSE;
2973 break;
7b81dfbb
AJ		 2974
2975 case R_X86_64_PLTOFF64:
2976 /* Relocation is PLT entry relative to GOT. For local
2977 symbols it's the symbol itself relative to GOT. */
eed180f8 2978 if (h != NULL
7b81dfbb 2979 /* See PLT32 handling. */
9d734efa
L		 2980 && (h->plt.offset != (bfd_vma) -1
2981 || eh->plt_got.offset != (bfd_vma) -1)
6de2ae4a 2982 && htab->elf.splt != NULL)
7b81dfbb 2983 {
9d734efa
L		 2984 if (eh->plt_got.offset != (bfd_vma) -1)
2985 {
2986 /* Use the GOT PLT. */
2987 resolved_plt = htab->plt_got;
2988 plt_offset = eh->plt_got.offset;
2989 }
f2c29a16 2990 else if (htab->plt_second != NULL)
0ff2b86e 2991 {
f2c29a16
L		 2992 resolved_plt = htab->plt_second;
2993 plt_offset = eh->plt_second.offset;
0ff2b86e
L		 2994 }
2995 else
2996 {
2997 resolved_plt = htab->elf.splt;
2998 plt_offset = h->plt.offset;
2999 }
3000
3001 relocation = (resolved_plt->output_section->vma
3002 + resolved_plt->output_offset
3003 + plt_offset);
7b81dfbb
AJ		 3004 unresolved_reloc = FALSE;
3005 }
3006
6de2ae4a
L		 3007 relocation -= htab->elf.sgotplt->output_section->vma
3008 + htab->elf.sgotplt->output_offset;
7b81dfbb 3009 break;
d6ab8113 3010
70256ad8 3011 case R_X86_64_PLT32:
c3320543 3012 case R_X86_64_PLT32_BND:
70256ad8
AJ		 3013 /* Relocation is to the entry for this symbol in the
3014 procedure linkage table. */
3015
3016 /* Resolve a PLT32 reloc against a local symbol directly,
407443a3 3017 without using the procedure linkage table. */
70256ad8
AJ		 3018 if (h == NULL)
3019 break;
3020
dd7e64d4
L		 3021 if ((h->plt.offset == (bfd_vma) -1
3022 && eh->plt_got.offset == (bfd_vma) -1)
6de2ae4a 3023 || htab->elf.splt == NULL)
70256ad8
AJ		 3024 {
3025 /* We didn't make a PLT entry for this symbol. This
407443a3
AJ		 3026 happens when statically linking PIC code, or when
3027 using -Bsymbolic. */
70256ad8
AJ		 3028 break;
3029 }
3030
451875b4 3031use_plt:
dd7e64d4 3032 if (h->plt.offset != (bfd_vma) -1)
0ff2b86e 3033 {
f2c29a16 3034 if (htab->plt_second != NULL)
dd7e64d4 3035 {
f2c29a16
L		 3036 resolved_plt = htab->plt_second;
3037 plt_offset = eh->plt_second.offset;
dd7e64d4
L		 3038 }
3039 else
3040 {
3041 resolved_plt = htab->elf.splt;
3042 plt_offset = h->plt.offset;
3043 }
0ff2b86e
L		 3044 }
3045 else
3046 {
dd7e64d4
L		 3047 /* Use the GOT PLT. */
3048 resolved_plt = htab->plt_got;
3049 plt_offset = eh->plt_got.offset;
0ff2b86e
L		 3050 }
3051
3052 relocation = (resolved_plt->output_section->vma
3053 + resolved_plt->output_offset
3054 + plt_offset);
b34976b6 3055 unresolved_reloc = FALSE;
70256ad8
AJ		 3056 break;
3057
1788fc08
L		 3058 case R_X86_64_SIZE32:
3059 case R_X86_64_SIZE64:
1788fc08
L		 3060 /* Set to symbol size. */
3061 relocation = st_size;
3062 goto direct;
3063
fd8ab9e5
AJ		 3064 case R_X86_64_PC8:
3065 case R_X86_64_PC16:
3066 case R_X86_64_PC32:
c3320543 3067 case R_X86_64_PC32_BND:
6333bc0d 3068 /* Don't complain about -fPIC if the symbol is undefined when
bd7ab16b
L		 3069 building executable unless it is unresolved weak symbol,
3070 references a dynamic definition in PIE or -z nocopyreloc
3071 is used. */
07d6d2b8 3072 if ((input_section->flags & SEC_ALLOC) != 0
90f487df 3073 && (input_section->flags & SEC_READONLY) != 0
6333bc0d 3074 && h != NULL
aec6b87e 3075 && ((bfd_link_executable (info)
7073b5b9
L		 3076 && ((h->root.type == bfd_link_hash_undefweak
3077 && !resolved_to_zero)
bd7ab16b
L		 3078 || (bfd_link_pie (info)
3079 && !h->def_regular
3080 && h->def_dynamic)
a5b4ee94
L		 3081 || ((info->nocopyreloc
3082 || (eh->def_protected
3083 && elf_has_no_copy_on_protected (h->root.u.def.section->owner)))
7073b5b9
L		 3084 && h->def_dynamic
3085 && !(h->root.u.def.section->flags & SEC_CODE))))
c5bb8910 3086 || bfd_link_dll (info)))
6610a52d 3087 {
41bed6dd 3088 bfd_boolean fail = FALSE;
6999821f 3089 if (SYMBOL_REFERENCES_LOCAL_P (info, h))
41bed6dd
L		 3090 {
3091 /* Symbol is referenced locally. Make sure it is
bd7ab16b
L		 3092 defined locally. */
3093 fail = !(h->def_regular || ELF_COMMON_DEF_P (h));
41bed6dd 3094 }
aec6b87e 3095 else if (!(bfd_link_pie (info)
bc696fd5 3096 && (h->needs_copy || eh->needs_copy)))
41bed6dd 3097 {
9a926d55 3098 /* Symbol doesn't need copy reloc and isn't referenced
bd7ab16b
L		 3099 locally. Address of protected function may not be
3100 reachable at run-time. */
3101 fail = (ELF_ST_VISIBILITY (h->other) == STV_DEFAULT
3102 || (ELF_ST_VISIBILITY (h->other) == STV_PROTECTED
3103 && h->type == STT_FUNC));
41bed6dd
L		 3104 }
3105
3106 if (fail)
aab921ad 3107 return elf_x86_64_need_pic (info, input_bfd, input_section,
338c190a 3108 h, NULL, NULL, howto);
6610a52d 3109 }
451875b4
L		 3110 /* Since x86-64 has PC-relative PLT, we can use PLT in PIE
3111 as function address. */
3112 else if (h != NULL
3113 && (input_section->flags & SEC_CODE) == 0
3114 && bfd_link_pie (info)
3115 && h->type == STT_FUNC
3116 && !h->def_regular
3117 && h->def_dynamic)
3118 goto use_plt;
6610a52d
L		 3119 /* Fall through. */
3120
70256ad8
AJ		 3121 case R_X86_64_8:
3122 case R_X86_64_16:
3123 case R_X86_64_32:
d6ab8113 3124 case R_X86_64_PC64:
6b3db546 3125 case R_X86_64_64:
80643fbc 3126 /* FIXME: The ABI says the linker should make sure the value is
407443a3 3127 the same when it's zeroextended to 64 bit. */
c434dee6 3128
1788fc08 3129direct:
b1e24c02 3130 if ((input_section->flags & SEC_ALLOC) == 0)
c434dee6
AJ		 3131 break;
3132
aebcc8ff
L		 3133 need_copy_reloc_in_pie = (bfd_link_pie (info)
3134 && h != NULL
3135 && (h->needs_copy
3136 || eh->needs_copy
3137 || (h->root.type
3138 == bfd_link_hash_undefined))
3139 && (X86_PCREL_TYPE_P (r_type)
3140 || X86_SIZE_TYPE_P (r_type)));
3141
3142 if (GENERATE_DYNAMIC_RELOCATION_P (info, eh, r_type,
3143 need_copy_reloc_in_pie,
3144 resolved_to_zero, FALSE))
70256ad8
AJ		 3145 {
3146 Elf_Internal_Rela outrel;
b34976b6 3147 bfd_boolean skip, relocate;
c434dee6 3148 asection *sreloc;
70256ad8
AJ		 3149
3150 /* When generating a shared object, these relocations
3151 are copied into the output file to be resolved at run
407443a3 3152 time. */
b34976b6
AM		 3153 skip = FALSE;
3154 relocate = FALSE;
70256ad8 3155
c629eae0
JJ		 3156 outrel.r_offset =
3157 _bfd_elf_section_offset (output_bfd, info, input_section,
c434dee6 3158 rel->r_offset);
c629eae0 3159 if (outrel.r_offset == (bfd_vma) -1)
b34976b6 3160 skip = TRUE;
0fb19cbc 3161 else if (outrel.r_offset == (bfd_vma) -2)
b34976b6 3162 skip = TRUE, relocate = TRUE;
70256ad8
AJ		 3163
3164 outrel.r_offset += (input_section->output_section->vma
3165 + input_section->output_offset);
3166
3167 if (skip)
0bb2d96a 3168 memset (&outrel, 0, sizeof outrel);
c434dee6 3169
e74399c4 3170 else if (COPY_INPUT_RELOC_P (info, h, r_type))
70256ad8 3171 {
351f65ca 3172 outrel.r_info = htab->r_info (h->dynindx, r_type);
c434dee6 3173 outrel.r_addend = rel->r_addend;
70256ad8
AJ		 3174 }
3175 else
3176 {
4c10bbaa
L		 3177 /* This symbol is local, or marked to become local.
3178 When relocation overflow check is disabled, we
3179 convert R_X86_64_32 to dynamic R_X86_64_RELATIVE. */
3180 if (r_type == htab->pointer_r_type
3181 || (r_type == R_X86_64_32
3182 && info->no_reloc_overflow_check))
607c0e09 3183 {
b34976b6 3184 relocate = TRUE;
351f65ca 3185 outrel.r_info = htab->r_info (0, R_X86_64_RELATIVE);
607c0e09
AS		 3186 outrel.r_addend = relocation + rel->r_addend;
3187 }
64d25c44
L		 3188 else if (r_type == R_X86_64_64
3189 && !ABI_64_P (output_bfd))
3190 {
3191 relocate = TRUE;
3192 outrel.r_info = htab->r_info (0,
3193 R_X86_64_RELATIVE64);
3194 outrel.r_addend = relocation + rel->r_addend;
8cf0d2dd
L		 3195 /* Check addend overflow. */
3196 if ((outrel.r_addend & 0x80000000)
3197 != (rel->r_addend & 0x80000000))
3198 {
3199 const char *name;
268a8d3a 3200 int addend = rel->r_addend;
8cf0d2dd
L		 3201 if (h && h->root.root.string)
3202 name = h->root.root.string;
3203 else
3204 name = bfd_elf_sym_name (input_bfd, symtab_hdr,
3205 sym, NULL);
d42c267e
AM		 3206 _bfd_error_handler
3207 /* xgettext:c-format */
871b3ab2 3208 (_("%pB: addend %s%#x in relocation %s against "
2dcf00ce
AM		 3209 "symbol `%s' at %#" PRIx64
3210 " in section `%pA' is out of range"),
d42c267e 3211 input_bfd, addend < 0 ? "-" : "", addend,
2dcf00ce
AM		 3212 howto->name, name, (uint64_t) rel->r_offset,
3213 input_section);
8cf0d2dd
L		 3214 bfd_set_error (bfd_error_bad_value);
3215 return FALSE;
3216 }
64d25c44 3217 }
607c0e09
AS		 3218 else
3219 {
3220 long sindx;
3221
8517fae7 3222 if (bfd_is_abs_section (sec))
607c0e09
AS		 3223 sindx = 0;
3224 else if (sec == NULL || sec->owner == NULL)
3225 {
3226 bfd_set_error (bfd_error_bad_value);
b34976b6 3227 return FALSE;
607c0e09
AS		 3228 }
3229 else
3230 {
3231 asection *osec;
3232
74541ad4
AM		 3233 /* We are turning this relocation into one
3234 against a section symbol. It would be
3235 proper to subtract the symbol's value,
3236 osec->vma, from the emitted reloc addend,
3237 but ld.so expects buggy relocs. */
607c0e09
AS		 3238 osec = sec->output_section;
3239 sindx = elf_section_data (osec)->dynindx;
74541ad4
AM		 3240 if (sindx == 0)
3241 {
3242 asection *oi = htab->elf.text_index_section;
3243 sindx = elf_section_data (oi)->dynindx;
3244 }
3245 BFD_ASSERT (sindx != 0);
607c0e09
AS		 3246 }
3247
351f65ca 3248 outrel.r_info = htab->r_info (sindx, r_type);
607c0e09
AS		 3249 outrel.r_addend = relocation + rel->r_addend;
3250 }
70256ad8
AJ		 3251 }
3252
cbe950e9 3253 sreloc = elf_section_data (input_section)->sreloc;
d8045f23 3254
62d78908
L		 3255 if (sreloc == NULL || sreloc->contents == NULL)
3256 {
3257 r = bfd_reloc_notsupported;
3258 goto check_relocation_error;
3259 }
c434dee6 3260
351f65ca 3261 elf_append_rela (output_bfd, sreloc, &outrel);
70256ad8
AJ		 3262
3263 /* If this reloc is against an external symbol, we do
3264 not want to fiddle with the addend. Otherwise, we
3265 need to include the symbol value so that it becomes
3266 an addend for the dynamic reloc. */
0f88be7a 3267 if (! relocate)
70256ad8
AJ		 3268 continue;
3269 }
3270
3271 break;
3272
bffbf940 3273 case R_X86_64_TLSGD:
67a4f2b7
AO		 3274 case R_X86_64_GOTPC32_TLSDESC:
3275 case R_X86_64_TLSDESC_CALL:
bffbf940 3276 case R_X86_64_GOTTPOFF:
bffbf940
JJ		 3277 tls_type = GOT_UNKNOWN;
3278 if (h == NULL && local_got_offsets)
0afcef53 3279 tls_type = elf_x86_local_got_tls_type (input_bfd) [r_symndx];
bffbf940 3280 else if (h != NULL)
0afcef53 3281 tls_type = elf_x86_hash_entry (h)->tls_type;
142411ca 3282
419414ea 3283 r_type_tls = r_type;
351f65ca
L		 3284 if (! elf_x86_64_tls_transition (info, input_bfd,
3285 input_section, contents,
3286 symtab_hdr, sym_hashes,
419414ea 3287 &r_type_tls, tls_type, rel,
bedfd056 3288 relend, h, r_symndx, TRUE))
534a31f6 3289 return FALSE;
bffbf940 3290
419414ea 3291 if (r_type_tls == R_X86_64_TPOFF32)
bffbf940 3292 {
142411ca
L		 3293 bfd_vma roff = rel->r_offset;
3294
bffbf940 3295 BFD_ASSERT (! unresolved_reloc);
142411ca 3296
419414ea 3297 if (r_type == R_X86_64_TLSGD)
bffbf940 3298 {
52bc799a 3299 /* GD->LE transition. For 64bit, change
e2cbcd91
L		 3300 .byte 0x66; leaq foo@tlsgd(%rip), %rdi
3301 .word 0x6666; rex64; call __tls_get_addr@PLT
3302 or
3303 .byte 0x66; leaq foo@tlsgd(%rip), %rdi
3304 .byte 0x66; rex64
3305 call *__tls_get_addr@GOTPCREL(%rip)
3306 which may be converted to
3307 addr32 call __tls_get_addr
52bc799a 3308 into:
e2cbcd91
L		 3309 movq %fs:0, %rax
3310 leaq foo@tpoff(%rax), %rax
52bc799a 3311 For 32bit, change
e2cbcd91
L		 3312 leaq foo@tlsgd(%rip), %rdi
3313 .word 0x6666; rex64; call __tls_get_addr@PLT
3314 or
3315 leaq foo@tlsgd(%rip), %rdi
3316 .byte 0x66; rex64
3317 call *__tls_get_addr@GOTPCREL(%rip)
3318 which may be converted to
3319 addr32 call __tls_get_addr
52bc799a 3320 into:
e2cbcd91
L		 3321 movl %fs:0, %eax
3322 leaq foo@tpoff(%rax), %rax
5c98a14e 3323 For largepic, change:
e2cbcd91
L		 3324 leaq foo@tlsgd(%rip), %rdi
3325 movabsq $__tls_get_addr@pltoff, %rax
3326 addq %r15, %rax
3327 call *%rax
5c98a14e 3328 into:
e2cbcd91
L		 3329 movq %fs:0, %rax
3330 leaq foo@tpoff(%rax), %rax
3331 nopw 0x0(%rax,%rax,1) */
5c98a14e 3332 int largepic = 0;
e2cbcd91 3333 if (ABI_64_P (output_bfd))
5c98a14e 3334 {
e2cbcd91
L		 3335 if (contents[roff + 5] == 0xb8)
3336 {
3337 memcpy (contents + roff - 3,
3338 "\x64\x48\x8b\x04\x25\0\0\0\0\x48\x8d\x80"
3339 "\0\0\0\0\x66\x0f\x1f\x44\0", 22);
3340 largepic = 1;
3341 }
3342 else
3343 memcpy (contents + roff - 4,
3344 "\x64\x48\x8b\x04\x25\0\0\0\0\x48\x8d\x80\0\0\0",
3345 16);
5c98a14e 3346 }
52bc799a
L		 3347 else
3348 memcpy (contents + roff - 3,
3349 "\x64\x8b\x04\x25\0\0\0\0\x48\x8d\x80\0\0\0",
3350 15);
eb4ff4d6 3351 bfd_put_32 (output_bfd,
351f65ca 3352 elf_x86_64_tpoff (info, relocation),
5c98a14e 3353 contents + roff + 8 + largepic);
e2cbcd91
L		 3354 /* Skip R_X86_64_PC32, R_X86_64_PLT32,
3355 R_X86_64_GOTPCRELX and R_X86_64_PLTOFF64. */
bffbf940 3356 rel++;
60f2e42e 3357 wrel++;
bffbf940
JJ		 3358 continue;
3359 }
419414ea 3360 else if (r_type == R_X86_64_GOTPC32_TLSDESC)
67a4f2b7
AO		 3361 {
3362 /* GDesc -> LE transition.
3363 It's originally something like:
3364 leaq x@tlsdesc(%rip), %rax
3365
3366 Change it to:
c9736ba0 3367 movl $x@tpoff, %rax. */
67a4f2b7 3368
c9736ba0 3369 unsigned int val, type;
67a4f2b7 3370
67a4f2b7 3371 type = bfd_get_8 (input_bfd, contents + roff - 3);
67a4f2b7 3372 val = bfd_get_8 (input_bfd, contents + roff - 1);
67a4f2b7
AO		 3373 bfd_put_8 (output_bfd, 0x48 | ((type >> 2) & 1),
3374 contents + roff - 3);
3375 bfd_put_8 (output_bfd, 0xc7, contents + roff - 2);
3376 bfd_put_8 (output_bfd, 0xc0 | ((val >> 3) & 7),
3377 contents + roff - 1);
eb4ff4d6 3378 bfd_put_32 (output_bfd,
351f65ca 3379 elf_x86_64_tpoff (info, relocation),
67a4f2b7
AO		 3380 contents + roff);
3381 continue;
3382 }
419414ea 3383 else if (r_type == R_X86_64_TLSDESC_CALL)
67a4f2b7
AO		 3384 {
3385 /* GDesc -> LE transition.
3386 It's originally:
3387 call *(%rax)
3388 Turn it into:
142411ca 3389 xchg %ax,%ax. */
10efb593 3390 bfd_put_8 (output_bfd, 0x66, contents + roff);
67a4f2b7
AO		 3391 bfd_put_8 (output_bfd, 0x90, contents + roff + 1);
3392 continue;
3393 }
419414ea 3394 else if (r_type == R_X86_64_GOTTPOFF)
bffbf940 3395 {
bffbf940 3396 /* IE->LE transition:
cf61b747 3397 For 64bit, originally it can be one of:
bffbf940
JJ		 3398 movq foo@gottpoff(%rip), %reg
3399 addq foo@gottpoff(%rip), %reg
3400 We change it into:
3401 movq $foo, %reg
3402 leaq foo(%reg), %reg
cf61b747
L		 3403 addq $foo, %reg.
3404 For 32bit, originally it can be one of:
3405 movq foo@gottpoff(%rip), %reg
3406 addl foo@gottpoff(%rip), %reg
3407 We change it into:
3408 movq $foo, %reg
3409 leal foo(%reg), %reg
3410 addl $foo, %reg. */
142411ca
L		 3411
3412 unsigned int val, type, reg;
3413
cf61b747
L		 3414 if (roff >= 3)
3415 val = bfd_get_8 (input_bfd, contents + roff - 3);
3416 else
3417 val = 0;
142411ca
L		 3418 type = bfd_get_8 (input_bfd, contents + roff - 2);
3419 reg = bfd_get_8 (input_bfd, contents + roff - 1);
bffbf940 3420 reg >>= 3;
bffbf940
JJ		 3421 if (type == 0x8b)
3422 {
3423 /* movq */
3424 if (val == 0x4c)
3425 bfd_put_8 (output_bfd, 0x49,
142411ca 3426 contents + roff - 3);
4a4c5f25
L		 3427 else if (!ABI_64_P (output_bfd) && val == 0x44)
3428 bfd_put_8 (output_bfd, 0x41,
3429 contents + roff - 3);
bffbf940 3430 bfd_put_8 (output_bfd, 0xc7,
142411ca 3431 contents + roff - 2);
bffbf940 3432 bfd_put_8 (output_bfd, 0xc0 | reg,
142411ca 3433 contents + roff - 1);
bffbf940
JJ		 3434 }
3435 else if (reg == 4)
3436 {
cf61b747
L		 3437 /* addq/addl -> addq/addl - addressing with %rsp/%r12
3438 is special */
bffbf940
JJ		 3439 if (val == 0x4c)
3440 bfd_put_8 (output_bfd, 0x49,
142411ca 3441 contents + roff - 3);
4a4c5f25
L		 3442 else if (!ABI_64_P (output_bfd) && val == 0x44)
3443 bfd_put_8 (output_bfd, 0x41,
3444 contents + roff - 3);
bffbf940 3445 bfd_put_8 (output_bfd, 0x81,
142411ca 3446 contents + roff - 2);
bffbf940 3447 bfd_put_8 (output_bfd, 0xc0 | reg,
142411ca 3448 contents + roff - 1);
bffbf940
JJ		 3449 }
3450 else
3451 {
cf61b747 3452 /* addq/addl -> leaq/leal */
bffbf940
JJ		 3453 if (val == 0x4c)
3454 bfd_put_8 (output_bfd, 0x4d,
142411ca 3455 contents + roff - 3);
4a4c5f25
L		 3456 else if (!ABI_64_P (output_bfd) && val == 0x44)
3457 bfd_put_8 (output_bfd, 0x45,
3458 contents + roff - 3);
bffbf940 3459 bfd_put_8 (output_bfd, 0x8d,
142411ca 3460 contents + roff - 2);
bffbf940 3461 bfd_put_8 (output_bfd, 0x80 | reg | (reg << 3),
142411ca 3462 contents + roff - 1);
bffbf940 3463 }
eb4ff4d6 3464 bfd_put_32 (output_bfd,
351f65ca 3465 elf_x86_64_tpoff (info, relocation),
142411ca 3466 contents + roff);
bffbf940
JJ		 3467 continue;
3468 }
142411ca
L		 3469 else
3470 BFD_ASSERT (FALSE);
bffbf940
JJ		 3471 }
3472
6de2ae4a 3473 if (htab->elf.sgot == NULL)
bffbf940
JJ		 3474 abort ();
3475
3476 if (h != NULL)
67a4f2b7
AO		 3477 {
3478 off = h->got.offset;
0afcef53 3479 offplt = elf_x86_hash_entry (h)->tlsdesc_got;
67a4f2b7 3480 }
bffbf940
JJ		 3481 else
3482 {
3483 if (local_got_offsets == NULL)
3484 abort ();
3485
3486 off = local_got_offsets[r_symndx];
67a4f2b7 3487 offplt = local_tlsdesc_gotents[r_symndx];
bffbf940
JJ		 3488 }
3489
3490 if ((off & 1) != 0)
3491 off &= ~1;
26e41594 3492 else
bffbf940
JJ		 3493 {
3494 Elf_Internal_Rela outrel;
bffbf940 3495 int dr_type, indx;
67a4f2b7 3496 asection *sreloc;
bffbf940 3497
6de2ae4a 3498 if (htab->elf.srelgot == NULL)
bffbf940
JJ		 3499 abort ();
3500
67a4f2b7
AO		 3501 indx = h && h->dynindx != -1 ? h->dynindx : 0;
3502
3503 if (GOT_TLS_GDESC_P (tls_type))
3504 {
351f65ca 3505 outrel.r_info = htab->r_info (indx, R_X86_64_TLSDESC);
67a4f2b7 3506 BFD_ASSERT (htab->sgotplt_jump_table_size + offplt
6de2ae4a
L		 3507 + 2 * GOT_ENTRY_SIZE <= htab->elf.sgotplt->size);
3508 outrel.r_offset = (htab->elf.sgotplt->output_section->vma
3509 + htab->elf.sgotplt->output_offset
67a4f2b7
AO		 3510 + offplt
3511 + htab->sgotplt_jump_table_size);
6de2ae4a 3512 sreloc = htab->elf.srelplt;
67a4f2b7 3513 if (indx == 0)
0afcef53 3514 outrel.r_addend = relocation - _bfd_x86_elf_dtpoff_base (info);
67a4f2b7
AO		 3515 else
3516 outrel.r_addend = 0;
351f65ca 3517 elf_append_rela (output_bfd, sreloc, &outrel);
67a4f2b7
AO		 3518 }
3519
6de2ae4a 3520 sreloc = htab->elf.srelgot;
67a4f2b7 3521
6de2ae4a
L		 3522 outrel.r_offset = (htab->elf.sgot->output_section->vma
3523 + htab->elf.sgot->output_offset + off);
bffbf940 3524
67a4f2b7 3525 if (GOT_TLS_GD_P (tls_type))
bffbf940 3526 dr_type = R_X86_64_DTPMOD64;
67a4f2b7
AO		 3527 else if (GOT_TLS_GDESC_P (tls_type))
3528 goto dr_done;
bffbf940
JJ		 3529 else
3530 dr_type = R_X86_64_TPOFF64;
3531
6de2ae4a 3532 bfd_put_64 (output_bfd, 0, htab->elf.sgot->contents + off);
bffbf940 3533 outrel.r_addend = 0;
67a4f2b7
AO		 3534 if ((dr_type == R_X86_64_TPOFF64
3535 || dr_type == R_X86_64_TLSDESC) && indx == 0)
0afcef53 3536 outrel.r_addend = relocation - _bfd_x86_elf_dtpoff_base (info);
351f65ca 3537 outrel.r_info = htab->r_info (indx, dr_type);
bffbf940 3538
351f65ca 3539 elf_append_rela (output_bfd, sreloc, &outrel);
bffbf940 3540
67a4f2b7 3541 if (GOT_TLS_GD_P (tls_type))
bffbf940
JJ		 3542 {
3543 if (indx == 0)
3544 {
d40d037c 3545 BFD_ASSERT (! unresolved_reloc);
bffbf940 3546 bfd_put_64 (output_bfd,
0afcef53 3547 relocation - _bfd_x86_elf_dtpoff_base (info),
6de2ae4a 3548 htab->elf.sgot->contents + off + GOT_ENTRY_SIZE);
bffbf940
JJ		 3549 }
3550 else
3551 {
3552 bfd_put_64 (output_bfd, 0,
6de2ae4a 3553 htab->elf.sgot->contents + off + GOT_ENTRY_SIZE);
351f65ca 3554 outrel.r_info = htab->r_info (indx,
bffbf940
JJ		 3555 R_X86_64_DTPOFF64);
3556 outrel.r_offset += GOT_ENTRY_SIZE;
351f65ca 3557 elf_append_rela (output_bfd, sreloc,
464d3bd4 3558 &outrel);
bffbf940
JJ		 3559 }
3560 }
3561
67a4f2b7 3562 dr_done:
bffbf940
JJ		 3563 if (h != NULL)
3564 h->got.offset |= 1;
3565 else
3566 local_got_offsets[r_symndx] |= 1;
3567 }
3568
67a4f2b7
AO		 3569 if (off >= (bfd_vma) -2
3570 && ! GOT_TLS_GDESC_P (tls_type))
bffbf940 3571 abort ();
419414ea 3572 if (r_type_tls == r_type)
bffbf940 3573 {
67a4f2b7
AO		 3574 if (r_type == R_X86_64_GOTPC32_TLSDESC
3575 || r_type == R_X86_64_TLSDESC_CALL)
6de2ae4a
L		 3576 relocation = htab->elf.sgotplt->output_section->vma
3577 + htab->elf.sgotplt->output_offset
67a4f2b7
AO		 3578 + offplt + htab->sgotplt_jump_table_size;
3579 else
6de2ae4a
L		 3580 relocation = htab->elf.sgot->output_section->vma
3581 + htab->elf.sgot->output_offset + off;
b34976b6 3582 unresolved_reloc = FALSE;
bffbf940 3583 }
142411ca 3584 else
67a4f2b7 3585 {
142411ca 3586 bfd_vma roff = rel->r_offset;
67a4f2b7 3587
419414ea 3588 if (r_type == R_X86_64_TLSGD)
142411ca 3589 {
52bc799a 3590 /* GD->IE transition. For 64bit, change
e2cbcd91
L		 3591 .byte 0x66; leaq foo@tlsgd(%rip), %rdi
3592 .word 0x6666; rex64; call __tls_get_addr@PLT
3593 or
3594 .byte 0x66; leaq foo@tlsgd(%rip), %rdi
3595 .byte 0x66; rex64
3596 call *__tls_get_addr@GOTPCREL(%rip
3597 which may be converted to
3598 addr32 call __tls_get_addr
52bc799a 3599 into:
e2cbcd91
L		 3600 movq %fs:0, %rax
3601 addq foo@gottpoff(%rip), %rax
52bc799a 3602 For 32bit, change
e2cbcd91
L		 3603 leaq foo@tlsgd(%rip), %rdi
3604 .word 0x6666; rex64; call __tls_get_addr@PLT
3605 or
3606 leaq foo@tlsgd(%rip), %rdi
3607 .byte 0x66; rex64;
3608 call *__tls_get_addr@GOTPCREL(%rip)
3609 which may be converted to
3610 addr32 call __tls_get_addr
52bc799a 3611 into:
e2cbcd91
L		 3612 movl %fs:0, %eax
3613 addq foo@gottpoff(%rip), %rax
5c98a14e 3614 For largepic, change:
e2cbcd91
L		 3615 leaq foo@tlsgd(%rip), %rdi
3616 movabsq $__tls_get_addr@pltoff, %rax
3617 addq %r15, %rax
3618 call *%rax
5c98a14e 3619 into:
e2cbcd91
L		 3620 movq %fs:0, %rax
3621 addq foo@gottpoff(%rax), %rax
3622 nopw 0x0(%rax,%rax,1) */
5c98a14e 3623 int largepic = 0;
e2cbcd91 3624 if (ABI_64_P (output_bfd))
5c98a14e 3625 {
e2cbcd91
L		 3626 if (contents[roff + 5] == 0xb8)
3627 {
3628 memcpy (contents + roff - 3,
3629 "\x64\x48\x8b\x04\x25\0\0\0\0\x48\x03\x05"
3630 "\0\0\0\0\x66\x0f\x1f\x44\0", 22);
3631 largepic = 1;
3632 }
3633 else
3634 memcpy (contents + roff - 4,
3635 "\x64\x48\x8b\x04\x25\0\0\0\0\x48\x03\x05\0\0\0",
3636 16);
5c98a14e 3637 }
52bc799a
L		 3638 else
3639 memcpy (contents + roff - 3,
3640 "\x64\x8b\x04\x25\0\0\0\0\x48\x03\x05\0\0\0",
3641 15);
142411ca 3642
6de2ae4a
L		 3643 relocation = (htab->elf.sgot->output_section->vma
3644 + htab->elf.sgot->output_offset + off
142411ca 3645 - roff
5c98a14e 3646 - largepic
142411ca
L		 3647 - input_section->output_section->vma
3648 - input_section->output_offset
3649 - 12);
3650 bfd_put_32 (output_bfd, relocation,
5c98a14e
JJ		 3651 contents + roff + 8 + largepic);
3652 /* Skip R_X86_64_PLT32/R_X86_64_PLTOFF64. */
142411ca 3653 rel++;
60f2e42e 3654 wrel++;
142411ca
L		 3655 continue;
3656 }
419414ea 3657 else if (r_type == R_X86_64_GOTPC32_TLSDESC)
142411ca
L		 3658 {
3659 /* GDesc -> IE transition.
3660 It's originally something like:
3661 leaq x@tlsdesc(%rip), %rax
67a4f2b7 3662
142411ca 3663 Change it to:
c9736ba0 3664 movq x@gottpoff(%rip), %rax # before xchg %ax,%ax. */
67a4f2b7 3665
142411ca
L		 3666 /* Now modify the instruction as appropriate. To
3667 turn a leaq into a movq in the form we use it, it
3668 suffices to change the second byte from 0x8d to
3669 0x8b. */
3670 bfd_put_8 (output_bfd, 0x8b, contents + roff - 2);
3671
3672 bfd_put_32 (output_bfd,
6de2ae4a
L		 3673 htab->elf.sgot->output_section->vma
3674 + htab->elf.sgot->output_offset + off
142411ca
L		 3675 - rel->r_offset
3676 - input_section->output_section->vma
3677 - input_section->output_offset
3678 - 4,
3679 contents + roff);
3680 continue;
3681 }
419414ea 3682 else if (r_type == R_X86_64_TLSDESC_CALL)
142411ca
L		 3683 {
3684 /* GDesc -> IE transition.
3685 It's originally:
3686 call *(%rax)
3687
3688 Change it to:
c9736ba0 3689 xchg %ax, %ax. */
142411ca 3690
142411ca
L		 3691 bfd_put_8 (output_bfd, 0x66, contents + roff);
3692 bfd_put_8 (output_bfd, 0x90, contents + roff + 1);
3693 continue;
3694 }
3695 else
3696 BFD_ASSERT (FALSE);
67a4f2b7 3697 }
bffbf940
JJ		 3698 break;
3699
3700 case R_X86_64_TLSLD:
351f65ca
L		 3701 if (! elf_x86_64_tls_transition (info, input_bfd,
3702 input_section, contents,
3703 symtab_hdr, sym_hashes,
bedfd056
L		 3704 &r_type, GOT_UNKNOWN, rel,
3705 relend, h, r_symndx, TRUE))
142411ca 3706 return FALSE;
a3fadc9a 3707
142411ca
L		 3708 if (r_type != R_X86_64_TLSLD)
3709 {
bffbf940 3710 /* LD->LE transition:
e2cbcd91
L		 3711 leaq foo@tlsld(%rip), %rdi
3712 call __tls_get_addr@PLT
3713 For 64bit, we change it into:
3714 .word 0x6666; .byte 0x66; movq %fs:0, %rax
3715 For 32bit, we change it into:
3716 nopl 0x0(%rax); movl %fs:0, %eax
3717 Or
3718 leaq foo@tlsld(%rip), %rdi;
3719 call *__tls_get_addr@GOTPCREL(%rip)
3720 which may be converted to
3721 addr32 call __tls_get_addr
52bc799a 3722 For 64bit, we change it into:
e2cbcd91 3723 .word 0x6666; .word 0x6666; movq %fs:0, %rax
52bc799a 3724 For 32bit, we change it into:
e2cbcd91 3725 nopw 0x0(%rax); movl %fs:0, %eax
5c98a14e 3726 For largepic, change:
e2cbcd91
L		 3727 leaq foo@tlsgd(%rip), %rdi
3728 movabsq $__tls_get_addr@pltoff, %rax
3729 addq %rbx, %rax
3730 call *%rax
3731 into
3732 data16 data16 data16 nopw %cs:0x0(%rax,%rax,1)
3733 movq %fs:0, %eax */
142411ca
L		 3734
3735 BFD_ASSERT (r_type == R_X86_64_TPOFF32);
e2cbcd91
L		 3736 if (ABI_64_P (output_bfd))
3737 {
3738 if (contents[rel->r_offset + 5] == 0xb8)
3739 memcpy (contents + rel->r_offset - 3,
3740 "\x66\x66\x66\x66\x2e\x0f\x1f\x84\0\0\0\0\0"
3741 "\x64\x48\x8b\x04\x25\0\0\0", 22);
3742 else if (contents[rel->r_offset + 4] == 0xff
3743 || contents[rel->r_offset + 4] == 0x67)
3744 memcpy (contents + rel->r_offset - 3,
3745 "\x66\x66\x66\x66\x64\x48\x8b\x04\x25\0\0\0",
3746 13);
3747 else
3748 memcpy (contents + rel->r_offset - 3,
3749 "\x66\x66\x66\x64\x48\x8b\x04\x25\0\0\0", 12);
3750 }
52bc799a 3751 else
e2cbcd91
L		 3752 {
3753 if (contents[rel->r_offset + 4] == 0xff)
3754 memcpy (contents + rel->r_offset - 3,
3755 "\x66\x0f\x1f\x40\x00\x64\x8b\x04\x25\0\0\0",
3756 13);
3757 else
3758 memcpy (contents + rel->r_offset - 3,
3759 "\x0f\x1f\x40\x00\x64\x8b\x04\x25\0\0\0", 12);
3760 }
3761 /* Skip R_X86_64_PC32, R_X86_64_PLT32, R_X86_64_GOTPCRELX
3762 and R_X86_64_PLTOFF64. */
bffbf940 3763 rel++;
60f2e42e 3764 wrel++;
bffbf940
JJ		 3765 continue;
3766 }
3767
6de2ae4a 3768 if (htab->elf.sgot == NULL)
bffbf940
JJ		 3769 abort ();
3770
0afcef53 3771 off = htab->tls_ld_or_ldm_got.offset;
bffbf940
JJ		 3772 if (off & 1)
3773 off &= ~1;
3774 else
3775 {
3776 Elf_Internal_Rela outrel;
bffbf940 3777
6de2ae4a 3778 if (htab->elf.srelgot == NULL)
bffbf940
JJ		 3779 abort ();
3780
6de2ae4a
L		 3781 outrel.r_offset = (htab->elf.sgot->output_section->vma
3782 + htab->elf.sgot->output_offset + off);
bffbf940
JJ		 3783
3784 bfd_put_64 (output_bfd, 0,
6de2ae4a 3785 htab->elf.sgot->contents + off);
bffbf940 3786 bfd_put_64 (output_bfd, 0,
6de2ae4a 3787 htab->elf.sgot->contents + off + GOT_ENTRY_SIZE);
351f65ca 3788 outrel.r_info = htab->r_info (0, R_X86_64_DTPMOD64);
bffbf940 3789 outrel.r_addend = 0;
351f65ca 3790 elf_append_rela (output_bfd, htab->elf.srelgot,
464d3bd4 3791 &outrel);
0afcef53 3792 htab->tls_ld_or_ldm_got.offset |= 1;
bffbf940 3793 }
6de2ae4a
L		 3794 relocation = htab->elf.sgot->output_section->vma
3795 + htab->elf.sgot->output_offset + off;
b34976b6 3796 unresolved_reloc = FALSE;
bffbf940
JJ		 3797 break;
3798
3799 case R_X86_64_DTPOFF32:
0e1862bb
L		 3800 if (!bfd_link_executable (info)
3801 || (input_section->flags & SEC_CODE) == 0)
0afcef53 3802 relocation -= _bfd_x86_elf_dtpoff_base (info);
bffbf940 3803 else
351f65ca 3804 relocation = elf_x86_64_tpoff (info, relocation);
bffbf940
JJ		 3805 break;
3806
3807 case R_X86_64_TPOFF32:
6769d501 3808 case R_X86_64_TPOFF64:
0e1862bb 3809 BFD_ASSERT (bfd_link_executable (info));
351f65ca 3810 relocation = elf_x86_64_tpoff (info, relocation);
bffbf940
JJ		 3811 break;
3812
a69ed7f7
L		 3813 case R_X86_64_DTPOFF64:
3814 BFD_ASSERT ((input_section->flags & SEC_CODE) == 0);
0afcef53 3815 relocation -= _bfd_x86_elf_dtpoff_base (info);
a69ed7f7
L		 3816 break;
3817
70256ad8
AJ		 3818 default:
3819 break;
3820 }
8d88c4ca 3821
239e1f3a
AM		 3822 /* Dynamic relocs are not propagated for SEC_DEBUGGING sections
3823 because such sections are not SEC_ALLOC and thus ld.so will
3824 not process them. */
c434dee6 3825 if (unresolved_reloc
239e1f3a 3826 && !((input_section->flags & SEC_DEBUGGING) != 0
1d5316ab
AM		 3827 && h->def_dynamic)
3828 && _bfd_elf_section_offset (output_bfd, info, input_section,
3829 rel->r_offset) != (bfd_vma) -1)
a040981f 3830 {
7073b5b9
L		 3831 switch (r_type)
3832 {
3833 case R_X86_64_32S:
a5b4ee94
L		 3834 sec = h->root.u.def.section;
3835 if ((info->nocopyreloc
3836 || (eh->def_protected
3837 && elf_has_no_copy_on_protected (h->root.u.def.section->owner)))
7073b5b9
L		 3838 && !(h->root.u.def.section->flags & SEC_CODE))
3839 return elf_x86_64_need_pic (info, input_bfd, input_section,
3840 h, NULL, NULL, howto);
3841 /* Fall through. */
3842
3843 default:
3844 _bfd_error_handler
3845 /* xgettext:c-format */
2dcf00ce
AM		 3846 (_("%pB(%pA+%#" PRIx64 "): "
3847 "unresolvable %s relocation against symbol `%s'"),
7073b5b9
L		 3848 input_bfd,
3849 input_section,
2dcf00ce 3850 (uint64_t) rel->r_offset,
7073b5b9
L		 3851 howto->name,
3852 h->root.root.string);
3853 return FALSE;
3854 }
a040981f 3855 }
c434dee6 3856
cbe950e9 3857do_relocation:
8d88c4ca 3858 r = _bfd_final_link_relocate (howto, input_bfd, input_section,
c434dee6
AJ		 3859 contents, rel->r_offset,
3860 relocation, rel->r_addend);
8d88c4ca 3861
62d78908 3862check_relocation_error:
8d88c4ca 3863 if (r != bfd_reloc_ok)
8da6118f 3864 {
c434dee6
AJ		 3865 const char *name;
3866
3867 if (h != NULL)
3868 name = h->root.root.string;
3869 else
8da6118f 3870 {
c434dee6
AJ		 3871 name = bfd_elf_string_from_elf_section (input_bfd,
3872 symtab_hdr->sh_link,
3873 sym->st_name);
3874 if (name == NULL)
b34976b6 3875 return FALSE;
c434dee6
AJ		 3876 if (*name == '\0')
3877 name = bfd_section_name (input_bfd, sec);
3878 }
3879
3880 if (r == bfd_reloc_overflow)
8b43e456 3881 {
78984959 3882 if (converted_reloc)
8b43e456
L		 3883 {
3884 info->callbacks->einfo
3885 (_("%F%P: failed to convert GOTPCREL relocation; relink with --no-relax\n"));
3886 return FALSE;
3887 }
3888 (*info->callbacks->reloc_overflow)
3889 (info, (h ? &h->root : NULL), name, howto->name,
3890 (bfd_vma) 0, input_bfd, input_section, rel->r_offset);
3891 }
c434dee6
AJ		 3892 else
3893 {
4eca0228 3894 _bfd_error_handler
695344c0 3895 /* xgettext:c-format */
2dcf00ce 3896 (_("%pB(%pA+%#" PRIx64 "): reloc against `%s': error %d"),
d003868e 3897 input_bfd, input_section,
2dcf00ce 3898 (uint64_t) rel->r_offset, name, (int) r);
b34976b6 3899 return FALSE;
8da6118f
KH		 3900 }
3901 }
60f2e42e
L		 3902
3903 if (wrel != rel)
3904 *wrel = *rel;
3905 }
3906
3907 if (wrel != rel)
3908 {
3909 Elf_Internal_Shdr *rel_hdr;
3910 size_t deleted = rel - wrel;
3911
3912 rel_hdr = _bfd_elf_single_rel_hdr (input_section->output_section);
3913 rel_hdr->sh_size -= rel_hdr->sh_entsize * deleted;
3914 if (rel_hdr->sh_size == 0)
3915 {
3916 /* It is too late to remove an empty reloc section. Leave
3917 one NONE reloc.
3918 ??? What is wrong with an empty section??? */
3919 rel_hdr->sh_size = rel_hdr->sh_entsize;
3920 deleted -= 1;
3921 }
3922 rel_hdr = _bfd_elf_single_rel_hdr (input_section);
3923 rel_hdr->sh_size -= rel_hdr->sh_entsize * deleted;
3924 input_section->reloc_count -= deleted;
8d88c4ca 3925 }
70256ad8 3926
b34976b6 3927 return TRUE;
70256ad8
AJ		 3928}
3929
3930/* Finish up dynamic symbol handling. We set the contents of various
3931 dynamic sections here. */
3932
b34976b6 3933static bfd_boolean
351f65ca
L		 3934elf_x86_64_finish_dynamic_symbol (bfd *output_bfd,
3935 struct bfd_link_info *info,
3936 struct elf_link_hash_entry *h,
aec6b87e 3937 Elf_Internal_Sym *sym)
70256ad8 3938{
0afcef53 3939 struct elf_x86_link_hash_table *htab;
f2c29a16 3940 bfd_boolean use_plt_second;
0afcef53 3941 struct elf_x86_link_hash_entry *eh;
aec6b87e 3942 bfd_boolean local_undefweak;
70256ad8 3943
0afcef53 3944 htab = elf_x86_hash_table (info, X86_64_ELF_DATA);
4dfe6ac6
NC		 3945 if (htab == NULL)
3946 return FALSE;
70256ad8 3947
f2c29a16
L		 3948 /* Use the second PLT section only if there is .plt section. */
3949 use_plt_second = htab->elf.splt != NULL && htab->plt_second != NULL;
0ff2b86e 3950
0afcef53 3951 eh = (struct elf_x86_link_hash_entry *) h;
9e9821dd
L		 3952 if (eh->no_finish_dynamic_symbol)
3953 abort ();
dd7e64d4 3954
aec6b87e
L		 3955 /* We keep PLT/GOT entries without dynamic PLT/GOT relocations for
3956 resolved undefined weak symbols in executable so that their
3957 references have value 0 at run-time. */
c5bce5c6 3958 local_undefweak = UNDEFINED_WEAK_RESOLVED_TO_ZERO (info, eh);
aec6b87e 3959
70256ad8
AJ		 3960 if (h->plt.offset != (bfd_vma) -1)
3961 {
70256ad8 3962 bfd_vma plt_index;
38b12349 3963 bfd_vma got_offset, plt_offset;
70256ad8 3964 Elf_Internal_Rela rela;
947216bf 3965 bfd_byte *loc;
0ff2b86e 3966 asection *plt, *gotplt, *relplt, *resolved_plt;
351f65ca 3967 const struct elf_backend_data *bed;
5974eba6 3968 bfd_vma plt_got_pcrel_offset;
cbe950e9
L		 3969
3970 /* When building a static executable, use .iplt, .igot.plt and
3971 .rela.iplt sections for STT_GNU_IFUNC symbols. */
6de2ae4a 3972 if (htab->elf.splt != NULL)
cbe950e9 3973 {
6de2ae4a
L		 3974 plt = htab->elf.splt;
3975 gotplt = htab->elf.sgotplt;
3976 relplt = htab->elf.srelplt;
cbe950e9
L		 3977 }
3978 else
3979 {
6de2ae4a
L		 3980 plt = htab->elf.iplt;
3981 gotplt = htab->elf.igotplt;
3982 relplt = htab->elf.irelplt;
cbe950e9 3983 }
70256ad8 3984
f3180fa9 3985 VERIFY_PLT_ENTRY (info, h, plt, gotplt, relplt, local_undefweak)
70256ad8
AJ		 3986
3987 /* Get the index in the procedure linkage table which
3988 corresponds to this symbol. This is the index of this symbol
3989 in all the symbols for which we are making plt entries. The
cbe950e9 3990 first entry in the procedure linkage table is reserved.
6bbec505 3991
cbe950e9 3992 Get the offset into the .got table of the entry that
407443a3 3993 corresponds to this function. Each .got entry is GOT_ENTRY_SIZE
cbe950e9
L		 3994 bytes. The first three are reserved for the dynamic linker.
3995
3996 For static executables, we don't reserve anything. */
3997
6de2ae4a 3998 if (plt == htab->elf.splt)
cbe950e9 3999 {
765e526c
L		 4000 got_offset = (h->plt.offset / htab->plt.plt_entry_size
4001 - htab->plt.has_plt0);
e1f98742 4002 got_offset = (got_offset + 3) * GOT_ENTRY_SIZE;
cbe950e9
L		 4003 }
4004 else
4005 {
765e526c 4006 got_offset = h->plt.offset / htab->plt.plt_entry_size;
e1f98742 4007 got_offset = got_offset * GOT_ENTRY_SIZE;
cbe950e9 4008 }
70256ad8 4009
38b12349 4010 /* Fill in the entry in the procedure linkage table. */
765e526c
L		 4011 memcpy (plt->contents + h->plt.offset, htab->plt.plt_entry,
4012 htab->plt.plt_entry_size);
f2c29a16 4013 if (use_plt_second)
0ff2b86e 4014 {
f2c29a16 4015 memcpy (htab->plt_second->contents + eh->plt_second.offset,
765e526c
L		 4016 htab->non_lazy_plt->plt_entry,
4017 htab->non_lazy_plt->plt_entry_size);
0ff2b86e 4018
f2c29a16
L		 4019 resolved_plt = htab->plt_second;
4020 plt_offset = eh->plt_second.offset;
0ff2b86e
L		 4021 }
4022 else
4023 {
0ff2b86e
L		 4024 resolved_plt = plt;
4025 plt_offset = h->plt.offset;
4026 }
eed180f8
RM		 4027
4028 /* Insert the relocation positions of the plt section. */
4029
4030 /* Put offset the PC-relative instruction referring to the GOT entry,
4031 subtracting the size of that instruction. */
ab7fede8
L		 4032 plt_got_pcrel_offset = (gotplt->output_section->vma
4033 + gotplt->output_offset
4034 + got_offset
4035 - resolved_plt->output_section->vma
4036 - resolved_plt->output_offset
4037 - plt_offset
765e526c 4038 - htab->plt.plt_got_insn_size);
ab7fede8
L		 4039
4040 /* Check PC-relative offset overflow in PLT entry. */
5974eba6 4041 if ((plt_got_pcrel_offset + 0x80000000) > 0xffffffff)
695344c0 4042 /* xgettext:c-format */
871b3ab2 4043 info->callbacks->einfo (_("%F%pB: PC-relative offset overflow in PLT entry for `%s'\n"),
ab7fede8
L		 4044 output_bfd, h->root.root.string);
4045
4046 bfd_put_32 (output_bfd, plt_got_pcrel_offset,
38b12349 4047 (resolved_plt->contents + plt_offset
765e526c 4048 + htab->plt.plt_got_offset));
cbe950e9 4049
653165cc 4050 /* Fill in the entry in the global offset table, initially this
aec6b87e
L		 4051 points to the second part of the PLT entry. Leave the entry
4052 as zero for undefined weak symbol in PIE. No PLT relocation
4053 against undefined weak symbol in PIE. */
4054 if (!local_undefweak)
cbe950e9 4055 {
765e526c 4056 if (htab->plt.has_plt0)
38b12349
L		 4057 bfd_put_64 (output_bfd, (plt->output_section->vma
4058 + plt->output_offset
4059 + h->plt.offset
765e526c 4060 + htab->lazy_plt->plt_lazy_offset),
38b12349 4061 gotplt->contents + got_offset);
aec6b87e
L		 4062
4063 /* Fill in the entry in the .rela.plt section. */
4064 rela.r_offset = (gotplt->output_section->vma
4065 + gotplt->output_offset
4066 + got_offset);
cf1070f1 4067 if (PLT_LOCAL_IFUNC_P (info, h))
aec6b87e 4068 {
871b3ab2 4069 info->callbacks->minfo (_("Local IFUNC function `%s' in %pB\n"),
6322e5c5
L		 4070 h->root.root.string,
4071 h->root.u.def.section->owner);
4072
aec6b87e
L		 4073 /* If an STT_GNU_IFUNC symbol is locally defined, generate
4074 R_X86_64_IRELATIVE instead of R_X86_64_JUMP_SLOT. */
4075 rela.r_info = htab->r_info (0, R_X86_64_IRELATIVE);
4076 rela.r_addend = (h->root.u.def.value
4077 + h->root.u.def.section->output_section->vma
4078 + h->root.u.def.section->output_offset);
4079 /* R_X86_64_IRELATIVE comes last. */
4080 plt_index = htab->next_irelative_index--;
4081 }
4082 else
4083 {
4084 rela.r_info = htab->r_info (h->dynindx, R_X86_64_JUMP_SLOT);
4085 rela.r_addend = 0;
4086 plt_index = htab->next_jump_slot_index++;
4087 }
e1f98742 4088
38b12349
L		 4089 /* Don't fill the second and third slots in PLT entry for
4090 static executables nor without PLT0. */
765e526c 4091 if (plt == htab->elf.splt && htab->plt.has_plt0)
aec6b87e 4092 {
38b12349 4093 bfd_vma plt0_offset
765e526c 4094 = h->plt.offset + htab->lazy_plt->plt_plt_insn_end;
aec6b87e
L		 4095
4096 /* Put relocation index. */
4097 bfd_put_32 (output_bfd, plt_index,
4098 (plt->contents + h->plt.offset
765e526c 4099 + htab->lazy_plt->plt_reloc_offset));
aec6b87e
L		 4100
4101 /* Put offset for jmp .PLT0 and check for overflow. We don't
4102 check relocation index for overflow since branch displacement
4103 will overflow first. */
4104 if (plt0_offset > 0x80000000)
695344c0 4105 /* xgettext:c-format */
871b3ab2 4106 info->callbacks->einfo (_("%F%pB: branch displacement overflow in PLT entry for `%s'\n"),
aec6b87e
L		 4107 output_bfd, h->root.root.string);
4108 bfd_put_32 (output_bfd, - plt0_offset,
38b12349 4109 (plt->contents + h->plt.offset
765e526c 4110 + htab->lazy_plt->plt_plt_offset));
aec6b87e 4111 }
351f65ca 4112
aec6b87e
L		 4113 bed = get_elf_backend_data (output_bfd);
4114 loc = relplt->contents + plt_index * bed->s->sizeof_rela;
4115 bed->s->swap_reloca_out (output_bfd, &rela, loc);
4116 }
dd7e64d4
L		 4117 }
4118 else if (eh->plt_got.offset != (bfd_vma) -1)
4119 {
38b12349 4120 bfd_vma got_offset, plt_offset;
dd7e64d4
L		 4121 asection *plt, *got;
4122 bfd_boolean got_after_plt;
4123 int32_t got_pcrel_offset;
dd7e64d4
L		 4124
4125 /* Set the entry in the GOT procedure linkage table. */
4126 plt = htab->plt_got;
4127 got = htab->elf.sgot;
4128 got_offset = h->got.offset;
4129
4130 if (got_offset == (bfd_vma) -1
e492d2f8 4131 || (h->type == STT_GNU_IFUNC && h->def_regular)
dd7e64d4
L		 4132 || plt == NULL
4133 || got == NULL)
4134 abort ();
70256ad8 4135
38b12349 4136 /* Use the non-lazy PLT entry template for the GOT PLT since they
dd7e64d4 4137 are the identical. */
dd7e64d4
L		 4138 /* Fill in the entry in the GOT procedure linkage table. */
4139 plt_offset = eh->plt_got.offset;
4140 memcpy (plt->contents + plt_offset,
765e526c
L		 4141 htab->non_lazy_plt->plt_entry,
4142 htab->non_lazy_plt->plt_entry_size);
dd7e64d4
L		 4143
4144 /* Put offset the PC-relative instruction referring to the GOT
4145 entry, subtracting the size of that instruction. */
4146 got_pcrel_offset = (got->output_section->vma
4147 + got->output_offset
4148 + got_offset
4149 - plt->output_section->vma
4150 - plt->output_offset
4151 - plt_offset
765e526c 4152 - htab->non_lazy_plt->plt_got_insn_size);
dd7e64d4
L		 4153
4154 /* Check PC-relative offset overflow in GOT PLT entry. */
4155 got_after_plt = got->output_section->vma > plt->output_section->vma;
4156 if ((got_after_plt && got_pcrel_offset < 0)
4157 || (!got_after_plt && got_pcrel_offset > 0))
695344c0 4158 /* xgettext:c-format */
871b3ab2 4159 info->callbacks->einfo (_("%F%pB: PC-relative offset overflow in GOT PLT entry for `%s'\n"),
dd7e64d4
L		 4160 output_bfd, h->root.root.string);
4161
4162 bfd_put_32 (output_bfd, got_pcrel_offset,
38b12349 4163 (plt->contents + plt_offset
765e526c 4164 + htab->non_lazy_plt->plt_got_offset));
dd7e64d4
L		 4165 }
4166
aec6b87e
L		 4167 if (!local_undefweak
4168 && !h->def_regular
dd7e64d4
L		 4169 && (h->plt.offset != (bfd_vma) -1
4170 || eh->plt_got.offset != (bfd_vma) -1))
4171 {
4172 /* Mark the symbol as undefined, rather than as defined in
4173 the .plt section. Leave the value if there were any
4174 relocations where pointer equality matters (this is a clue
4175 for the dynamic linker, to make function pointer
4176 comparisons work between an application and shared
4177 library), otherwise set it to zero. If a function is only
4178 called from a binary, there is no need to slow down
4179 shared libraries because of that. */
4180 sym->st_shndx = SHN_UNDEF;
4181 if (!h->pointer_equality_needed)
4182 sym->st_value = 0;
70256ad8
AJ		 4183 }
4184
4ec09950
L		 4185 _bfd_x86_elf_link_fixup_ifunc_symbol (info, htab, h, sym);
4186
aec6b87e
L		 4187 /* Don't generate dynamic GOT relocation against undefined weak
4188 symbol in executable. */
bffbf940 4189 if (h->got.offset != (bfd_vma) -1
0afcef53
L		 4190 && ! GOT_TLS_GD_ANY_P (elf_x86_hash_entry (h)->tls_type)
4191 && elf_x86_hash_entry (h)->tls_type != GOT_TLS_IE
aec6b87e 4192 && !local_undefweak)
053579d7 4193 {
053579d7 4194 Elf_Internal_Rela rela;
233cc9c1 4195 asection *relgot = htab->elf.srelgot;
053579d7
AJ		 4196
4197 /* This symbol has an entry in the global offset table. Set it
bffbf940 4198 up. */
6de2ae4a 4199 if (htab->elf.sgot == NULL || htab->elf.srelgot == NULL)
c434dee6 4200 abort ();
053579d7 4201
6de2ae4a
L		 4202 rela.r_offset = (htab->elf.sgot->output_section->vma
4203 + htab->elf.sgot->output_offset
dc810e39 4204 + (h->got.offset &~ (bfd_vma) 1));
053579d7
AJ		 4205
4206 /* If this is a static link, or it is a -Bsymbolic link and the
4207 symbol is defined locally or was forced to be local because
4208 of a version file, we just want to emit a RELATIVE reloc.
4209 The entry in the global offset table will already have been
4210 initialized in the relocate_section function. */
710ab287 4211 if (h->def_regular
0018b0a3
L		 4212 && h->type == STT_GNU_IFUNC)
4213 {
233cc9c1
L		 4214 if (h->plt.offset == (bfd_vma) -1)
4215 {
4216 /* STT_GNU_IFUNC is referenced without PLT. */
4217 if (htab->elf.splt == NULL)
4218 {
4219 /* use .rel[a].iplt section to store .got relocations
4220 in static executable. */
4221 relgot = htab->elf.irelplt;
4222 }
6999821f 4223 if (SYMBOL_REFERENCES_LOCAL_P (info, h))
233cc9c1 4224 {
871b3ab2 4225 info->callbacks->minfo (_("Local IFUNC function `%s' in %pB\n"),
6322e5c5
L		 4226 h->root.root.string,
4227 h->root.u.def.section->owner);
4228
233cc9c1
L		 4229 rela.r_info = htab->r_info (0,
4230 R_X86_64_IRELATIVE);
4231 rela.r_addend = (h->root.u.def.value
4232 + h->root.u.def.section->output_section->vma
4233 + h->root.u.def.section->output_offset);
4234 }
4235 else
4236 goto do_glob_dat;
4237 }
4238 else if (bfd_link_pic (info))
710ab287
L		 4239 {
4240 /* Generate R_X86_64_GLOB_DAT. */
4241 goto do_glob_dat;
4242 }
4243 else
4244 {
90d60710 4245 asection *plt;
aab82f4c 4246 bfd_vma plt_offset;
90d60710 4247
710ab287
L		 4248 if (!h->pointer_equality_needed)
4249 abort ();
4250
4251 /* For non-shared object, we can't use .got.plt, which
4252 contains the real function addres if we need pointer
4253 equality. We load the GOT entry with the PLT entry. */
f2c29a16 4254 if (htab->plt_second != NULL)
aab82f4c 4255 {
f2c29a16
L		 4256 plt = htab->plt_second;
4257 plt_offset = eh->plt_second.offset;
aab82f4c
L		 4258 }
4259 else
4260 {
4261 plt = htab->elf.splt ? htab->elf.splt : htab->elf.iplt;
4262 plt_offset = h->plt.offset;
4263 }
710ab287
L		 4264 bfd_put_64 (output_bfd, (plt->output_section->vma
4265 + plt->output_offset
aab82f4c 4266 + plt_offset),
6de2ae4a 4267 htab->elf.sgot->contents + h->got.offset);
710ab287
L		 4268 return TRUE;
4269 }
0018b0a3 4270 }
0e1862bb 4271 else if (bfd_link_pic (info)
6999821f 4272 && SYMBOL_REFERENCES_LOCAL_P (info, h))
053579d7 4273 {
ad71ce8d 4274 if (!(h->def_regular || ELF_COMMON_DEF_P (h)))
41bed6dd 4275 return FALSE;
cc78d0af 4276 BFD_ASSERT((h->got.offset & 1) != 0);
351f65ca 4277 rela.r_info = htab->r_info (0, R_X86_64_RELATIVE);
053579d7
AJ		 4278 rela.r_addend = (h->root.u.def.value
4279 + h->root.u.def.section->output_section->vma
4280 + h->root.u.def.section->output_offset);
4281 }
4282 else
4283 {
4284 BFD_ASSERT((h->got.offset & 1) == 0);
710ab287 4285do_glob_dat:
c434dee6 4286 bfd_put_64 (output_bfd, (bfd_vma) 0,
6de2ae4a 4287 htab->elf.sgot->contents + h->got.offset);
351f65ca 4288 rela.r_info = htab->r_info (h->dynindx, R_X86_64_GLOB_DAT);
053579d7
AJ		 4289 rela.r_addend = 0;
4290 }
4291
233cc9c1 4292 elf_append_rela (output_bfd, relgot, &rela);
053579d7
AJ		 4293 }
4294
f5385ebf 4295 if (h->needs_copy)
70256ad8 4296 {
70256ad8 4297 Elf_Internal_Rela rela;
5474d94f 4298 asection *s;
70256ad8
AJ		 4299
4300 /* This symbol needs a copy reloc. Set it up. */
ff38b4cc 4301 VERIFY_COPY_RELOC (h, htab)
70256ad8
AJ		 4302
4303 rela.r_offset = (h->root.u.def.value
4304 + h->root.u.def.section->output_section->vma
4305 + h->root.u.def.section->output_offset);
351f65ca 4306 rela.r_info = htab->r_info (h->dynindx, R_X86_64_COPY);
70256ad8 4307 rela.r_addend = 0;
afbf7e8e 4308 if (h->root.u.def.section == htab->elf.sdynrelro)
5474d94f
AM		 4309 s = htab->elf.sreldynrelro;
4310 else
4311 s = htab->elf.srelbss;
4312 elf_append_rela (output_bfd, s, &rela);
70256ad8
AJ		 4313 }
4314
b34976b6 4315 return TRUE;
70256ad8
AJ		 4316}
4317
c25bc9fc
L		 4318/* Finish up local dynamic symbol handling. We set the contents of
4319 various dynamic sections here. */
4320
4321static bfd_boolean
351f65ca 4322elf_x86_64_finish_local_dynamic_symbol (void **slot, void *inf)
c25bc9fc
L		 4323{
4324 struct elf_link_hash_entry *h
4325 = (struct elf_link_hash_entry *) *slot;
4326 struct bfd_link_info *info
eed180f8 4327 = (struct bfd_link_info *) inf;
c25bc9fc 4328
351f65ca 4329 return elf_x86_64_finish_dynamic_symbol (info->output_bfd,
5f0f0847 4330 info, h, NULL);
c25bc9fc
L		 4331}
4332
aec6b87e
L		 4333/* Finish up undefined weak symbol handling in PIE. Fill its PLT entry
4334 here since undefined weak symbol may not be dynamic and may not be
4335 called for elf_x86_64_finish_dynamic_symbol. */
4336
4337static bfd_boolean
4338elf_x86_64_pie_finish_undefweak_symbol (struct bfd_hash_entry *bh,
4339 void *inf)
4340{
4341 struct elf_link_hash_entry *h = (struct elf_link_hash_entry *) bh;
4342 struct bfd_link_info *info = (struct bfd_link_info *) inf;
4343
4344 if (h->root.type != bfd_link_hash_undefweak
4345 || h->dynindx != -1)
4346 return TRUE;
4347
4348 return elf_x86_64_finish_dynamic_symbol (info->output_bfd,
5f0f0847 4349 info, h, NULL);
aec6b87e
L		 4350}
4351
c434dee6
AJ		 4352/* Used to decide how to sort relocs in an optimal manner for the
4353 dynamic linker, before writing them out. */
4354
4355static enum elf_reloc_type_class
cae1fbbb 4356elf_x86_64_reloc_type_class (const struct bfd_link_info *info,
7e612e98
AM		 4357 const asection *rel_sec ATTRIBUTE_UNUSED,
4358 const Elf_Internal_Rela *rela)
c434dee6 4359{
cae1fbbb
L		 4360 bfd *abfd = info->output_bfd;
4361 const struct elf_backend_data *bed = get_elf_backend_data (abfd);
0afcef53
L		 4362 struct elf_x86_link_hash_table *htab
4363 = elf_x86_hash_table (info, X86_64_ELF_DATA);
cae1fbbb 4364
d9e3b590
L		 4365 if (htab->elf.dynsym != NULL
4366 && htab->elf.dynsym->contents != NULL)
4367 {
4368 /* Check relocation against STT_GNU_IFUNC symbol if there are
07d6d2b8 4369 dynamic symbols. */
d9e3b590 4370 unsigned long r_symndx = htab->r_sym (rela->r_info);
897463b1
L		 4371 if (r_symndx != STN_UNDEF)
4372 {
4373 Elf_Internal_Sym sym;
4374 if (!bed->s->swap_symbol_in (abfd,
4375 (htab->elf.dynsym->contents
4376 + r_symndx * bed->s->sizeof_sym),
4377 0, &sym))
4378 abort ();
d9e3b590 4379
897463b1
L		 4380 if (ELF_ST_TYPE (sym.st_info) == STT_GNU_IFUNC)
4381 return reloc_class_ifunc;
4382 }
d9e3b590 4383 }
cae1fbbb 4384
351f65ca 4385 switch ((int) ELF32_R_TYPE (rela->r_info))
c434dee6 4386 {
c428ce9d
L		 4387 case R_X86_64_IRELATIVE:
4388 return reloc_class_ifunc;
c434dee6 4389 case R_X86_64_RELATIVE:
1da80baa 4390 case R_X86_64_RELATIVE64:
c434dee6
AJ		 4391 return reloc_class_relative;
4392 case R_X86_64_JUMP_SLOT:
4393 return reloc_class_plt;
4394 case R_X86_64_COPY:
4395 return reloc_class_copy;
4396 default:
4397 return reloc_class_normal;
4398 }
4399}
4400
70256ad8
AJ		 4401/* Finish up the dynamic sections. */
4402
b34976b6 4403static bfd_boolean
351f65ca
L		 4404elf_x86_64_finish_dynamic_sections (bfd *output_bfd,
4405 struct bfd_link_info *info)
70256ad8 4406{
0afcef53 4407 struct elf_x86_link_hash_table *htab;
70256ad8 4408
9577f60b 4409 htab = _bfd_x86_elf_finish_dynamic_sections (output_bfd, info);
4dfe6ac6
NC		 4410 if (htab == NULL)
4411 return FALSE;
4412
9577f60b
L		 4413 if (! htab->elf.dynamic_sections_created)
4414 return TRUE;
70256ad8 4415
9577f60b 4416 if (htab->elf.splt && htab->elf.splt->size > 0)
e41b3a13 4417 {
9577f60b
L		 4418 elf_section_data (htab->elf.splt->output_section)
4419 ->this_hdr.sh_entsize = htab->plt.plt_entry_size;
e41b3a13 4420
9577f60b 4421 if (htab->plt.has_plt0)
fff53dae 4422 {
9577f60b
L		 4423 /* Fill in the special first entry in the procedure linkage
4424 table. */
4425 memcpy (htab->elf.splt->contents,
4426 htab->lazy_plt->plt0_entry,
4427 htab->lazy_plt->plt0_entry_size);
4428 /* Add offset for pushq GOT+8(%rip), since the instruction
4429 uses 6 bytes subtract this value. */
4430 bfd_put_32 (output_bfd,
4431 (htab->elf.sgotplt->output_section->vma
4432 + htab->elf.sgotplt->output_offset
4433 + 8
4434 - htab->elf.splt->output_section->vma
4435 - htab->elf.splt->output_offset
4436 - 6),
4437 (htab->elf.splt->contents
4438 + htab->lazy_plt->plt0_got1_offset));
4439 /* Add offset for the PC-relative instruction accessing
4440 GOT+16, subtracting the offset to the end of that
4441 instruction. */
4442 bfd_put_32 (output_bfd,
4443 (htab->elf.sgotplt->output_section->vma
4444 + htab->elf.sgotplt->output_offset
4445 + 16
4446 - htab->elf.splt->output_section->vma
4447 - htab->elf.splt->output_offset
4448 - htab->lazy_plt->plt0_got2_insn_end),
4449 (htab->elf.splt->contents
4450 + htab->lazy_plt->plt0_got2_offset));
fff53dae 4451 }
fff53dae 4452
9577f60b 4453 if (htab->tlsdesc_plt)
8361ed4d 4454 {
9577f60b
L		 4455 bfd_put_64 (output_bfd, (bfd_vma) 0,
4456 htab->elf.sgot->contents + htab->tlsdesc_got);
4457
4458 memcpy (htab->elf.splt->contents + htab->tlsdesc_plt,
92e68c1d
L		 4459 htab->lazy_plt->plt_tlsdesc_entry,
4460 htab->lazy_plt->plt_tlsdesc_entry_size);
9577f60b 4461
bf54968b
L		 4462 /* Add offset for pushq GOT+8(%rip), since ENDBR64 uses 4
4463 bytes and the instruction uses 6 bytes, subtract these
4464 values. */
9577f60b
L		 4465 bfd_put_32 (output_bfd,
4466 (htab->elf.sgotplt->output_section->vma
4467 + htab->elf.sgotplt->output_offset
4468 + 8
4469 - htab->elf.splt->output_section->vma
4470 - htab->elf.splt->output_offset
4471 - htab->tlsdesc_plt
92e68c1d 4472 - htab->lazy_plt->plt_tlsdesc_got1_insn_end),
9577f60b
L		 4473 (htab->elf.splt->contents
4474 + htab->tlsdesc_plt
92e68c1d 4475 + htab->lazy_plt->plt_tlsdesc_got1_offset));
bf54968b
L		 4476 /* Add offset for indirect branch via GOT+TDG, where TDG
4477 stands for htab->tlsdesc_got, subtracting the offset
4478 to the end of that instruction. */
9577f60b
L		 4479 bfd_put_32 (output_bfd,
4480 (htab->elf.sgot->output_section->vma
4481 + htab->elf.sgot->output_offset
4482 + htab->tlsdesc_got
4483 - htab->elf.splt->output_section->vma
4484 - htab->elf.splt->output_offset
4485 - htab->tlsdesc_plt
92e68c1d 4486 - htab->lazy_plt->plt_tlsdesc_got2_insn_end),
9577f60b 4487 (htab->elf.splt->contents
92e68c1d
L		 4488 + htab->tlsdesc_plt
4489 + htab->lazy_plt->plt_tlsdesc_got2_offset));
8361ed4d
L		 4490 }
4491 }
4492
aec6b87e
L		 4493 /* Fill PLT entries for undefined weak symbols in PIE. */
4494 if (bfd_link_pie (info))
4495 bfd_hash_traverse (&info->hash->table,
4496 elf_x86_64_pie_finish_undefweak_symbol,
4497 info);
4498
b34976b6 4499 return TRUE;
8d88c4ca
NC		 4500}
4501
233cc9c1
L		 4502/* Fill PLT/GOT entries and allocate dynamic relocations for local
4503 STT_GNU_IFUNC symbols, which aren't in the ELF linker hash table.
4504 It has to be done before elf_link_sort_relocs is called so that
4505 dynamic relocations are properly sorted. */
4506
4507static bfd_boolean
4508elf_x86_64_output_arch_local_syms
4509 (bfd *output_bfd ATTRIBUTE_UNUSED,
4510 struct bfd_link_info *info,
4511 void *flaginfo ATTRIBUTE_UNUSED,
4512 int (*func) (void *, const char *,
4513 Elf_Internal_Sym *,
4514 asection *,
4515 struct elf_link_hash_entry *) ATTRIBUTE_UNUSED)
4516{
0afcef53
L		 4517 struct elf_x86_link_hash_table *htab
4518 = elf_x86_hash_table (info, X86_64_ELF_DATA);
233cc9c1
L		 4519 if (htab == NULL)
4520 return FALSE;
4521
4522 /* Fill PLT and GOT entries for local STT_GNU_IFUNC symbols. */
4523 htab_traverse (htab->loc_hash_table,
4524 elf_x86_64_finish_local_dynamic_symbol,
4525 info);
4526
4527 return TRUE;
4528}
4529
38b12349 4530/* Forward declaration. */
765e526c 4531static const struct elf_x86_lazy_plt_layout elf_x86_64_nacl_plt;
38b12349
L		 4532
4533/* Similar to _bfd_elf_get_synthetic_symtab. Support PLTs with all
4534 dynamic relocations. */
4535
4536static long
4537elf_x86_64_get_synthetic_symtab (bfd *abfd,
4538 long symcount ATTRIBUTE_UNUSED,
4539 asymbol **syms ATTRIBUTE_UNUSED,
4540 long dynsymcount,
4541 asymbol **dynsyms,
4542 asymbol **ret)
4543{
f493882d 4544 long count, i, n;
38b12349 4545 int j;
38b12349 4546 bfd_byte *plt_contents;
f493882d 4547 long relsize;
765e526c
L		 4548 const struct elf_x86_lazy_plt_layout *lazy_plt;
4549 const struct elf_x86_non_lazy_plt_layout *non_lazy_plt;
4550 const struct elf_x86_lazy_plt_layout *lazy_bnd_plt;
4551 const struct elf_x86_non_lazy_plt_layout *non_lazy_bnd_plt;
4552 const struct elf_x86_lazy_plt_layout *lazy_ibt_plt;
4553 const struct elf_x86_non_lazy_plt_layout *non_lazy_ibt_plt;
38b12349 4554 asection *plt;
f493882d
L		 4555 enum elf_x86_plt_type plt_type;
4556 struct elf_x86_plt plts[] =
144bed8d 4557 {
38b12349
L		 4558 { ".plt", NULL, NULL, plt_unknown, 0, 0, 0, 0 },
4559 { ".plt.got", NULL, NULL, plt_non_lazy, 0, 0, 0, 0 },
f2c29a16
L		 4560 { ".plt.sec", NULL, NULL, plt_second, 0, 0, 0, 0 },
4561 { ".plt.bnd", NULL, NULL, plt_second, 0, 0, 0, 0 },
dd9e66ee 4562 { NULL, NULL, NULL, plt_non_lazy, 0, 0, 0, 0 }
38b12349 4563 };
144bed8d 4564
38b12349 4565 *ret = NULL;
144bed8d 4566
38b12349
L		 4567 if ((abfd->flags & (DYNAMIC | EXEC_P)) == 0)
4568 return 0;
144bed8d 4569
38b12349
L		 4570 if (dynsymcount <= 0)
4571 return 0;
cca5b8b6 4572
38b12349
L		 4573 relsize = bfd_get_dynamic_reloc_upper_bound (abfd);
4574 if (relsize <= 0)
4575 return -1;
4576
3b4c3844 4577 if (get_elf_x86_backend_data (abfd)->target_os != is_nacl)
144bed8d 4578 {
38b12349
L		 4579 lazy_plt = &elf_x86_64_lazy_plt;
4580 non_lazy_plt = &elf_x86_64_non_lazy_plt;
4581 lazy_bnd_plt = &elf_x86_64_lazy_bnd_plt;
4582 non_lazy_bnd_plt = &elf_x86_64_non_lazy_bnd_plt;
ee2fdd6f
L		 4583 if (ABI_64_P (abfd))
4584 {
4585 lazy_ibt_plt = &elf_x86_64_lazy_ibt_plt;
4586 non_lazy_ibt_plt = &elf_x86_64_non_lazy_ibt_plt;
4587 }
4588 else
4589 {
4590 lazy_ibt_plt = &elf_x32_lazy_ibt_plt;
4591 non_lazy_ibt_plt = &elf_x32_non_lazy_ibt_plt;
4592 }
38b12349
L		 4593 }
4594 else
4595 {
4596 lazy_plt = &elf_x86_64_nacl_plt;
4597 non_lazy_plt = NULL;
4598 lazy_bnd_plt = NULL;
4599 non_lazy_bnd_plt = NULL;
ee2fdd6f
L		 4600 lazy_ibt_plt = NULL;
4601 non_lazy_ibt_plt = NULL;
38b12349 4602 }
144bed8d 4603
38b12349
L		 4604 count = 0;
4605 for (j = 0; plts[j].name != NULL; j++)
4606 {
4607 plt = bfd_get_section_by_name (abfd, plts[j].name);
90efb642 4608 if (plt == NULL || plt->size == 0)
6f25f223 4609 continue;
533d0af0 4610
38b12349
L		 4611 /* Get the PLT section contents. */
4612 plt_contents = (bfd_byte *) bfd_malloc (plt->size);
4613 if (plt_contents == NULL)
4614 break;
4615 if (!bfd_get_section_contents (abfd, (asection *) plt,
4616 plt_contents, 0, plt->size))
4617 {
4618 free (plt_contents);
4619 break;
4620 }
144bed8d 4621
38b12349
L		 4622 /* Check what kind of PLT it is. */
4623 plt_type = plt_unknown;
90efb642
L		 4624 if (plts[j].type == plt_unknown
4625 && (plt->size >= (lazy_plt->plt_entry_size
4626 + lazy_plt->plt_entry_size)))
144bed8d 4627 {
38b12349
L		 4628 /* Match lazy PLT first. Need to check the first two
4629 instructions. */
4630 if ((memcmp (plt_contents, lazy_plt->plt0_entry,
4631 lazy_plt->plt0_got1_offset) == 0)
4632 && (memcmp (plt_contents + 6, lazy_plt->plt0_entry + 6,
4633 2) == 0))
4634 plt_type = plt_lazy;
4635 else if (lazy_bnd_plt != NULL
4636 && (memcmp (plt_contents, lazy_bnd_plt->plt0_entry,
4637 lazy_bnd_plt->plt0_got1_offset) == 0)
4638 && (memcmp (plt_contents + 6,
4639 lazy_bnd_plt->plt0_entry + 6, 3) == 0))
ec1f73bb 4640 {
f2c29a16 4641 plt_type = plt_lazy | plt_second;
ee2fdd6f
L		 4642 /* The fist entry in the lazy IBT PLT is the same as the
4643 lazy BND PLT. */
4644 if ((memcmp (plt_contents + lazy_ibt_plt->plt_entry_size,
4645 lazy_ibt_plt->plt_entry,
4646 lazy_ibt_plt->plt_got_offset) == 0))
4647 lazy_plt = lazy_ibt_plt;
4648 else
4649 lazy_plt = lazy_bnd_plt;
ec1f73bb 4650 }
144bed8d 4651 }
fca6ae69 4652
38b12349 4653 if (non_lazy_plt != NULL
90efb642
L		 4654 && (plt_type == plt_unknown || plt_type == plt_non_lazy)
4655 && plt->size >= non_lazy_plt->plt_entry_size)
38b12349
L		 4656 {
4657 /* Match non-lazy PLT. */
4658 if (memcmp (plt_contents, non_lazy_plt->plt_entry,
4659 non_lazy_plt->plt_got_offset) == 0)
4660 plt_type = plt_non_lazy;
4661 }
4662
ee2fdd6f 4663 if (plt_type == plt_unknown || plt_type == plt_second)
38b12349 4664 {
ee2fdd6f 4665 if (non_lazy_bnd_plt != NULL
90efb642 4666 && plt->size >= non_lazy_bnd_plt->plt_entry_size
ee2fdd6f
L		 4667 && (memcmp (plt_contents, non_lazy_bnd_plt->plt_entry,
4668 non_lazy_bnd_plt->plt_got_offset) == 0))
38b12349 4669 {
ee2fdd6f 4670 /* Match BND PLT. */
f2c29a16 4671 plt_type = plt_second;
38b12349
L		 4672 non_lazy_plt = non_lazy_bnd_plt;
4673 }
ee2fdd6f 4674 else if (non_lazy_ibt_plt != NULL
90efb642 4675 && plt->size >= non_lazy_ibt_plt->plt_entry_size
ee2fdd6f
L		 4676 && (memcmp (plt_contents,
4677 non_lazy_ibt_plt->plt_entry,
4678 non_lazy_ibt_plt->plt_got_offset) == 0))
4679 {
4680 /* Match IBT PLT. */
4681 plt_type = plt_second;
4682 non_lazy_plt = non_lazy_ibt_plt;
4683 }
38b12349
L		 4684 }
4685
4686 if (plt_type == plt_unknown)
37c0b6ee
L		 4687 {
4688 free (plt_contents);
4689 continue;
4690 }
38b12349
L		 4691
4692 plts[j].sec = plt;
4693 plts[j].type = plt_type;
4694
4695 if ((plt_type & plt_lazy))
4696 {
4697 plts[j].plt_got_offset = lazy_plt->plt_got_offset;
4698 plts[j].plt_got_insn_size = lazy_plt->plt_got_insn_size;
4699 plts[j].plt_entry_size = lazy_plt->plt_entry_size;
4700 /* Skip PLT0 in lazy PLT. */
4701 i = 1;
4702 }
4703 else
4704 {
4705 plts[j].plt_got_offset = non_lazy_plt->plt_got_offset;
4706 plts[j].plt_got_insn_size = non_lazy_plt->plt_got_insn_size;
4707 plts[j].plt_entry_size = non_lazy_plt->plt_entry_size;
4708 i = 0;
4709 }
4710
f2c29a16
L		 4711 /* Skip lazy PLT when the second PLT is used. */
4712 if (plt_type == (plt_lazy | plt_second))
38b12349
L		 4713 plts[j].count = 0;
4714 else
4715 {
4716 n = plt->size / plts[j].plt_entry_size;
4717 plts[j].count = n;
4718 count += n - i;
4719 }
4720
4721 plts[j].contents = plt_contents;
144bed8d
L		 4722 }
4723
f493882d
L		 4724 return _bfd_x86_elf_get_synthetic_symtab (abfd, count, relsize,
4725 (bfd_vma) 0, plts, dynsyms,
4726 ret);
0ff2b86e
L		 4727}
4728
d2b2c203
DJ		 4729/* Handle an x86-64 specific section when reading an object file. This
4730 is called when elfcode.h finds a section with an unknown type. */
4731
4732static bfd_boolean
0c723101
L		 4733elf_x86_64_section_from_shdr (bfd *abfd, Elf_Internal_Shdr *hdr,
4734 const char *name, int shindex)
d2b2c203
DJ		 4735{
4736 if (hdr->sh_type != SHT_X86_64_UNWIND)
4737 return FALSE;
4738
6dc132d9 4739 if (! _bfd_elf_make_section_from_shdr (abfd, hdr, name, shindex))
d2b2c203
DJ		 4740 return FALSE;
4741
4742 return TRUE;
4743}
4744
3b22753a
L		 4745/* Hook called by the linker routine which adds symbols from an object
4746 file. We use it to put SHN_X86_64_LCOMMON items in .lbss, instead
4747 of .bss. */
4748
4749static bfd_boolean
351f65ca 4750elf_x86_64_add_symbol_hook (bfd *abfd,
a43942db 4751 struct bfd_link_info *info ATTRIBUTE_UNUSED,
351f65ca
L		 4752 Elf_Internal_Sym *sym,
4753 const char **namep ATTRIBUTE_UNUSED,
4754 flagword *flagsp ATTRIBUTE_UNUSED,
4755 asection **secp,
4756 bfd_vma *valp)
3b22753a
L		 4757{
4758 asection *lcomm;
4759
4760 switch (sym->st_shndx)
4761 {
4762 case SHN_X86_64_LCOMMON:
4763 lcomm = bfd_get_section_by_name (abfd, "LARGE_COMMON");
4764 if (lcomm == NULL)
4765 {
4766 lcomm = bfd_make_section_with_flags (abfd,
4767 "LARGE_COMMON",
4768 (SEC_ALLOC
4769 | SEC_IS_COMMON
4770 | SEC_LINKER_CREATED));
4771 if (lcomm == NULL)
4772 return FALSE;
4773 elf_section_flags (lcomm) |= SHF_X86_64_LARGE;
4774 }
4775 *secp = lcomm;
4776 *valp = sym->st_size;
c35bdf6e 4777 return TRUE;
3b22753a 4778 }
d8045f23 4779
3b22753a
L		 4780 return TRUE;
4781}
4782
4783
4784/* Given a BFD section, try to locate the corresponding ELF section
4785 index. */
4786
4787static bfd_boolean
351f65ca
L		 4788elf_x86_64_elf_section_from_bfd_section (bfd *abfd ATTRIBUTE_UNUSED,
4789 asection *sec, int *index_return)
3b22753a
L		 4790{
4791 if (sec == &_bfd_elf_large_com_section)
4792 {
91d6fa6a 4793 *index_return = SHN_X86_64_LCOMMON;
3b22753a
L		 4794 return TRUE;
4795 }
4796 return FALSE;
4797}
4798
4799/* Process a symbol. */
4800
4801static void
351f65ca
L		 4802elf_x86_64_symbol_processing (bfd *abfd ATTRIBUTE_UNUSED,
4803 asymbol *asym)
3b22753a
L		 4804{
4805 elf_symbol_type *elfsym = (elf_symbol_type *) asym;
4806
4807 switch (elfsym->internal_elf_sym.st_shndx)
4808 {
4809 case SHN_X86_64_LCOMMON:
4810 asym->section = &_bfd_elf_large_com_section;
4811 asym->value = elfsym->internal_elf_sym.st_size;
4812 /* Common symbol doesn't set BSF_GLOBAL. */
4813 asym->flags &= ~BSF_GLOBAL;
4814 break;
4815 }
4816}
4817
4818static bfd_boolean
351f65ca 4819elf_x86_64_common_definition (Elf_Internal_Sym *sym)
3b22753a
L		 4820{
4821 return (sym->st_shndx == SHN_COMMON
4822 || sym->st_shndx == SHN_X86_64_LCOMMON);
4823}
4824
4825static unsigned int
351f65ca 4826elf_x86_64_common_section_index (asection *sec)
3b22753a
L		 4827{
4828 if ((elf_section_flags (sec) & SHF_X86_64_LARGE) == 0)
4829 return SHN_COMMON;
4830 else
4831 return SHN_X86_64_LCOMMON;
4832}
4833
4834static asection *
351f65ca 4835elf_x86_64_common_section (asection *sec)
3b22753a
L		 4836{
4837 if ((elf_section_flags (sec) & SHF_X86_64_LARGE) == 0)
4838 return bfd_com_section_ptr;
4839 else
4840 return &_bfd_elf_large_com_section;
4841}
4842
4843static bfd_boolean
5d13b3b3
AM		 4844elf_x86_64_merge_symbol (struct elf_link_hash_entry *h,
4845 const Elf_Internal_Sym *sym,
351f65ca 4846 asection **psec,
5d13b3b3
AM		 4847 bfd_boolean newdef,
4848 bfd_boolean olddef,
351f65ca 4849 bfd *oldbfd,
5d13b3b3 4850 const asection *oldsec)
3b22753a
L		 4851{
4852 /* A normal common symbol and a large common symbol result in a
00492999
L		 4853 normal common symbol. We turn the large common symbol into a
4854 normal one. */
5d13b3b3 4855 if (!olddef
3b22753a 4856 && h->root.type == bfd_link_hash_common
5d13b3b3
AM		 4857 && !newdef
4858 && bfd_is_com_section (*psec)
4859 && oldsec != *psec)
3b22753a 4860 {
00492999 4861 if (sym->st_shndx == SHN_COMMON
5d13b3b3 4862 && (elf_section_flags (oldsec) & SHF_X86_64_LARGE) != 0)
00492999
L		 4863 {
4864 h->root.u.c.p->section
4865 = bfd_make_section_old_way (oldbfd, "COMMON");
4866 h->root.u.c.p->section->flags = SEC_ALLOC;
4867 }
4868 else if (sym->st_shndx == SHN_X86_64_LCOMMON
5d13b3b3
AM		 4869 && (elf_section_flags (oldsec) & SHF_X86_64_LARGE) == 0)
4870 *psec = bfd_com_section_ptr;
3b22753a
L		 4871 }
4872
4873 return TRUE;
4874}
4875
4876static int
351f65ca
L		 4877elf_x86_64_additional_program_headers (bfd *abfd,
4878 struct bfd_link_info *info ATTRIBUTE_UNUSED)
3b22753a
L		 4879{
4880 asection *s;
9a2e389a 4881 int count = 0;
3b22753a
L		 4882
4883 /* Check to see if we need a large readonly segment. */
4884 s = bfd_get_section_by_name (abfd, ".lrodata");
4885 if (s && (s->flags & SEC_LOAD))
4886 count++;
4887
4888 /* Check to see if we need a large data segment. Since .lbss sections
4889 is placed right after the .bss section, there should be no need for
4890 a large data segment just because of .lbss. */
4891 s = bfd_get_section_by_name (abfd, ".ldata");
4892 if (s && (s->flags & SEC_LOAD))
4893 count++;
4894
4895 return count;
4896}
4897
c543bf9a
L		 4898/* Return TRUE iff relocations for INPUT are compatible with OUTPUT. */
4899
4900static bfd_boolean
4901elf_x86_64_relocs_compatible (const bfd_target *input,
4902 const bfd_target *output)
4903{
4904 return ((xvec_get_elf_backend_data (input)->s->elfclass
4905 == xvec_get_elf_backend_data (output)->s->elfclass)
4906 && _bfd_elf_relocs_compatible (input, output));
4907}
4908
38b12349
L		 4909/* Set up x86-64 GNU properties. Return the first relocatable ELF input
4910 with GNU properties if found. Otherwise, return NULL. */
4911
4912static bfd *
4913elf_x86_64_link_setup_gnu_properties (struct bfd_link_info *info)
4914{
1de031c8 4915 struct elf_x86_init_table init_table;
ee2fdd6f 4916
78984959
L		 4917 if ((int) R_X86_64_standard >= (int) R_X86_64_converted_reloc_bit
4918 || (int) R_X86_64_max <= (int) R_X86_64_converted_reloc_bit
4919 || ((int) (R_X86_64_GNU_VTINHERIT | R_X86_64_converted_reloc_bit)
4920 != (int) R_X86_64_GNU_VTINHERIT)
4921 || ((int) (R_X86_64_GNU_VTENTRY | R_X86_64_converted_reloc_bit)
4922 != (int) R_X86_64_GNU_VTENTRY))
4923 abort ();
4924
851b6fa1
L		 4925 /* This is unused for x86-64. */
4926 init_table.plt0_pad_byte = 0x90;
4927
3b4c3844 4928 if (get_elf_x86_backend_data (info->output_bfd)->target_os != is_nacl)
73784fa5 4929 {
a6798bab 4930 if (info->bndplt)
ee2fdd6f 4931 {
1de031c8
L		 4932 init_table.lazy_plt = &elf_x86_64_lazy_bnd_plt;
4933 init_table.non_lazy_plt = &elf_x86_64_non_lazy_bnd_plt;
ee2fdd6f
L		 4934 }
4935 else
4936 {
1de031c8
L		 4937 init_table.lazy_plt = &elf_x86_64_lazy_plt;
4938 init_table.non_lazy_plt = &elf_x86_64_non_lazy_plt;
ee2fdd6f 4939 }
38b12349 4940
a6798bab 4941 if (ABI_64_P (info->output_bfd))
38b12349 4942 {
1de031c8
L		 4943 init_table.lazy_ibt_plt = &elf_x86_64_lazy_ibt_plt;
4944 init_table.non_lazy_ibt_plt = &elf_x86_64_non_lazy_ibt_plt;
38b12349
L		 4945 }
4946 else
4947 {
1de031c8
L		 4948 init_table.lazy_ibt_plt = &elf_x32_lazy_ibt_plt;
4949 init_table.non_lazy_ibt_plt = &elf_x32_non_lazy_ibt_plt;
38b12349 4950 }
38b12349
L		 4951 }
4952 else
4953 {
1de031c8
L		 4954 init_table.lazy_plt = &elf_x86_64_nacl_plt;
4955 init_table.non_lazy_plt = NULL;
4956 init_table.lazy_ibt_plt = NULL;
4957 init_table.non_lazy_ibt_plt = NULL;
38b12349
L		 4958 }
4959
7a382c1c
L		 4960 if (ABI_64_P (info->output_bfd))
4961 {
1de031c8
L		 4962 init_table.r_info = elf64_r_info;
4963 init_table.r_sym = elf64_r_sym;
7a382c1c
L		 4964 }
4965 else
4966 {
1de031c8
L		 4967 init_table.r_info = elf32_r_info;
4968 init_table.r_sym = elf32_r_sym;
7a382c1c
L		 4969 }
4970
1de031c8 4971 return _bfd_x86_elf_link_setup_gnu_properties (info, &init_table);
38b12349
L		 4972}
4973
9a2e389a 4974static const struct bfd_elf_special_section
46bed679 4975elf_x86_64_special_sections[]=
3b22753a 4976{
0112cd26
NC		 4977 { STRING_COMMA_LEN (".gnu.linkonce.lb"), -2, SHT_NOBITS, SHF_ALLOC + SHF_WRITE + SHF_X86_64_LARGE},
4978 { STRING_COMMA_LEN (".gnu.linkonce.lr"), -2, SHT_PROGBITS, SHF_ALLOC + SHF_X86_64_LARGE},
4979 { STRING_COMMA_LEN (".gnu.linkonce.lt"), -2, SHT_PROGBITS, SHF_ALLOC + SHF_EXECINSTR + SHF_X86_64_LARGE},
07d6d2b8 4980 { STRING_COMMA_LEN (".lbss"), -2, SHT_NOBITS, SHF_ALLOC + SHF_WRITE + SHF_X86_64_LARGE},
0112cd26
NC		 4981 { STRING_COMMA_LEN (".ldata"), -2, SHT_PROGBITS, SHF_ALLOC + SHF_WRITE + SHF_X86_64_LARGE},
4982 { STRING_COMMA_LEN (".lrodata"), -2, SHT_PROGBITS, SHF_ALLOC + SHF_X86_64_LARGE},
07d6d2b8 4983 { NULL, 0, 0, 0, 0 }
3b22753a
L		 4984};
4985
6d00b590 4986#define TARGET_LITTLE_SYM x86_64_elf64_vec
70256ad8
AJ		 4987#define TARGET_LITTLE_NAME "elf64-x86-64"
4988#define ELF_ARCH bfd_arch_i386
ae95ffa6 4989#define ELF_TARGET_ID X86_64_ELF_DATA
70256ad8 4990#define ELF_MACHINE_CODE EM_X86_64
f6aec96d
L		 4991#if DEFAULT_LD_Z_SEPARATE_CODE
4992# define ELF_MAXPAGESIZE 0x1000
4993#else
4994# define ELF_MAXPAGESIZE 0x200000
4995#endif
2043964e 4996#define ELF_MINPAGESIZE 0x1000
24718e3b 4997#define ELF_COMMONPAGESIZE 0x1000
70256ad8
AJ		 4998
4999#define elf_backend_can_gc_sections 1
51b64d56 5000#define elf_backend_can_refcount 1
70256ad8
AJ		 5001#define elf_backend_want_got_plt 1
5002#define elf_backend_plt_readonly 1
5003#define elf_backend_want_plt_sym 0
5004#define elf_backend_got_header_size (GOT_ENTRY_SIZE*3)
b491616a 5005#define elf_backend_rela_normal 1
07d6d2b8 5006#define elf_backend_plt_alignment 4
f7483970 5007#define elf_backend_extern_protected_data 1
bedfd056 5008#define elf_backend_caches_rawsize 1
64f52338 5009#define elf_backend_dtrel_excludes_plt 1
5474d94f 5010#define elf_backend_want_dynrelro 1
70256ad8 5011
351f65ca 5012#define elf_info_to_howto elf_x86_64_info_to_howto
70256ad8 5013
351f65ca 5014#define bfd_elf64_bfd_reloc_type_lookup elf_x86_64_reloc_type_lookup
157090f7 5015#define bfd_elf64_bfd_reloc_name_lookup \
351f65ca 5016 elf_x86_64_reloc_name_lookup
70256ad8 5017
c543bf9a 5018#define elf_backend_relocs_compatible elf_x86_64_relocs_compatible
351f65ca 5019#define elf_backend_check_relocs elf_x86_64_check_relocs
38b12349 5020#define elf_backend_create_dynamic_sections _bfd_elf_create_dynamic_sections
351f65ca
L		 5021#define elf_backend_finish_dynamic_sections elf_x86_64_finish_dynamic_sections
5022#define elf_backend_finish_dynamic_symbol elf_x86_64_finish_dynamic_symbol
233cc9c1 5023#define elf_backend_output_arch_local_syms elf_x86_64_output_arch_local_syms
351f65ca
L		 5024#define elf_backend_grok_prstatus elf_x86_64_grok_prstatus
5025#define elf_backend_grok_psinfo elf_x86_64_grok_psinfo
8fd79e71
L		 5026#ifdef CORE_HEADER
5027#define elf_backend_write_core_note elf_x86_64_write_core_note
5028#endif
351f65ca
L		 5029#define elf_backend_reloc_type_class elf_x86_64_reloc_type_class
5030#define elf_backend_relocate_section elf_x86_64_relocate_section
74541ad4 5031#define elf_backend_init_index_section _bfd_elf_init_1_index_section
407443a3 5032#define elf_backend_object_p elf64_x86_64_elf_object_p
0ff2b86e 5033#define bfd_elf64_get_synthetic_symtab elf_x86_64_get_synthetic_symtab
8d88c4ca 5034
d2b2c203 5035#define elf_backend_section_from_shdr \
351f65ca 5036 elf_x86_64_section_from_shdr
d2b2c203 5037
3b22753a 5038#define elf_backend_section_from_bfd_section \
351f65ca 5039 elf_x86_64_elf_section_from_bfd_section
3b22753a 5040#define elf_backend_add_symbol_hook \
351f65ca 5041 elf_x86_64_add_symbol_hook
3b22753a 5042#define elf_backend_symbol_processing \
351f65ca 5043 elf_x86_64_symbol_processing
3b22753a 5044#define elf_backend_common_section_index \
351f65ca 5045 elf_x86_64_common_section_index
3b22753a 5046#define elf_backend_common_section \
351f65ca 5047 elf_x86_64_common_section
3b22753a 5048#define elf_backend_common_definition \
351f65ca 5049 elf_x86_64_common_definition
3b22753a 5050#define elf_backend_merge_symbol \
351f65ca 5051 elf_x86_64_merge_symbol
3b22753a 5052#define elf_backend_special_sections \
351f65ca 5053 elf_x86_64_special_sections
3b22753a 5054#define elf_backend_additional_program_headers \
351f65ca 5055 elf_x86_64_additional_program_headers
38b12349 5056#define elf_backend_setup_gnu_properties \
9f857535
L		 5057 elf_x86_64_link_setup_gnu_properties
5058#define elf_backend_hide_symbol \
5059 _bfd_x86_elf_hide_symbol
3b22753a 5060
8f56f7a2
L		 5061#undef elf64_bed
5062#define elf64_bed elf64_x86_64_bed
5063
8d88c4ca 5064#include "elf64-target.h"
9d7cbccd 5065
6036f486
ES		 5066/* CloudABI support. */
5067
07d6d2b8 5068#undef TARGET_LITTLE_SYM
6036f486 5069#define TARGET_LITTLE_SYM x86_64_elf64_cloudabi_vec
07d6d2b8 5070#undef TARGET_LITTLE_NAME
6036f486
ES		 5071#define TARGET_LITTLE_NAME "elf64-x86-64-cloudabi"
5072
5073#undef ELF_OSABI
5074#define ELF_OSABI ELFOSABI_CLOUDABI
5075
07d6d2b8 5076#undef elf64_bed
6036f486
ES		 5077#define elf64_bed elf64_x86_64_cloudabi_bed
5078
5079#include "elf64-target.h"
5080
9d7cbccd
NC		 5081/* FreeBSD support. */
5082
07d6d2b8 5083#undef TARGET_LITTLE_SYM
6d00b590 5084#define TARGET_LITTLE_SYM x86_64_elf64_fbsd_vec
07d6d2b8 5085#undef TARGET_LITTLE_NAME
9d7cbccd
NC		 5086#define TARGET_LITTLE_NAME "elf64-x86-64-freebsd"
5087
d1036acb
L		 5088#undef ELF_OSABI
5089#define ELF_OSABI ELFOSABI_FREEBSD
9d7cbccd 5090
07d6d2b8 5091#undef elf64_bed
9d7cbccd
NC		 5092#define elf64_bed elf64_x86_64_fbsd_bed
5093
5094#include "elf64-target.h"
8a9036a4 5095
a6cc6b3b
RO		 5096/* Solaris 2 support. */
5097
5098#undef TARGET_LITTLE_SYM
6d00b590 5099#define TARGET_LITTLE_SYM x86_64_elf64_sol2_vec
a6cc6b3b
RO		 5100#undef TARGET_LITTLE_NAME
5101#define TARGET_LITTLE_NAME "elf64-x86-64-sol2"
5102
3b4c3844
L		 5103static const struct elf_x86_backend_data elf_x86_64_solaris_arch_bed =
5104 {
5105 is_solaris /* os */
5106 };
5107
5108#undef elf_backend_arch_data
5109#define elf_backend_arch_data &elf_x86_64_solaris_arch_bed
5110
a6cc6b3b
RO		 5111/* Restore default: we cannot use ELFOSABI_SOLARIS, otherwise ELFOSABI_NONE
5112 objects won't be recognized. */
5113#undef ELF_OSABI
5114
5115#undef elf64_bed
5116#define elf64_bed elf64_x86_64_sol2_bed
5117
7dc98aea
RO		 5118/* The 64-bit static TLS arena size is rounded to the nearest 16-byte
5119 boundary. */
84865015 5120#undef elf_backend_static_tls_alignment
7dc98aea
RO		 5121#define elf_backend_static_tls_alignment 16
5122
a6cc6b3b
RO		 5123/* The Solaris 2 ABI requires a plt symbol on all platforms.
5124
5125 Cf. Linker and Libraries Guide, Ch. 2, Link-Editor, Generating the Output
5126 File, p.63. */
84865015 5127#undef elf_backend_want_plt_sym
a6cc6b3b
RO		 5128#define elf_backend_want_plt_sym 1
5129
84865015
NC		 5130#undef elf_backend_strtab_flags
5131#define elf_backend_strtab_flags SHF_STRINGS
5132
5133static bfd_boolean
5522f910
NC		 5134elf64_x86_64_copy_solaris_special_section_fields (const bfd *ibfd ATTRIBUTE_UNUSED,
5135 bfd *obfd ATTRIBUTE_UNUSED,
5136 const Elf_Internal_Shdr *isection ATTRIBUTE_UNUSED,
5137 Elf_Internal_Shdr *osection ATTRIBUTE_UNUSED)
84865015
NC		 5138{
5139 /* PR 19938: FIXME: Need to add code for setting the sh_info
5140 and sh_link fields of Solaris specific section types. */
5141 return FALSE;
5142}
5143
5522f910
NC		 5144#undef elf_backend_copy_special_section_fields
5145#define elf_backend_copy_special_section_fields elf64_x86_64_copy_solaris_special_section_fields
84865015 5146
a6cc6b3b
RO		 5147#include "elf64-target.h"
5148
8059fb19
RM		 5149/* Native Client support. */
5150
64b384e1
RM		 5151static bfd_boolean
5152elf64_x86_64_nacl_elf_object_p (bfd *abfd)
5153{
5154 /* Set the right machine number for a NaCl x86-64 ELF64 file. */
5155 bfd_default_set_arch_mach (abfd, bfd_arch_i386, bfd_mach_x86_64_nacl);
5156 return TRUE;
5157}
5158
8059fb19 5159#undef TARGET_LITTLE_SYM
6d00b590 5160#define TARGET_LITTLE_SYM x86_64_elf64_nacl_vec
8059fb19
RM		 5161#undef TARGET_LITTLE_NAME
5162#define TARGET_LITTLE_NAME "elf64-x86-64-nacl"
5163#undef elf64_bed
5164#define elf64_bed elf64_x86_64_nacl_bed
5165
5166#undef ELF_MAXPAGESIZE
5167#undef ELF_MINPAGESIZE
5168#undef ELF_COMMONPAGESIZE
5169#define ELF_MAXPAGESIZE 0x10000
5170#define ELF_MINPAGESIZE 0x10000
5171#define ELF_COMMONPAGESIZE 0x10000
5172
5173/* Restore defaults. */
5174#undef ELF_OSABI
5175#undef elf_backend_static_tls_alignment
5176#undef elf_backend_want_plt_sym
5177#define elf_backend_want_plt_sym 0
84865015 5178#undef elf_backend_strtab_flags
5522f910 5179#undef elf_backend_copy_special_section_fields
8059fb19
RM		 5180
5181/* NaCl uses substantially different PLT entries for the same effects. */
5182
5183#undef elf_backend_plt_alignment
5184#define elf_backend_plt_alignment 5
5185#define NACL_PLT_ENTRY_SIZE 64
5186#define NACLMASK 0xe0 /* 32-byte alignment mask. */
5187
5188static const bfd_byte elf_x86_64_nacl_plt0_entry[NACL_PLT_ENTRY_SIZE] =
5189 {
07d6d2b8 5190 0xff, 0x35, 8, 0, 0, 0, /* pushq GOT+8(%rip) */
8059fb19 5191 0x4c, 0x8b, 0x1d, 16, 0, 0, 0, /* mov GOT+16(%rip), %r11 */
07d6d2b8
AM		 5192 0x41, 0x83, 0xe3, NACLMASK, /* and $-32, %r11d */
5193 0x4d, 0x01, 0xfb, /* add %r15, %r11 */
5194 0x41, 0xff, 0xe3, /* jmpq *%r11 */
8059fb19 5195
ea2d813e 5196 /* 9-byte nop sequence to pad out to the next 32-byte boundary. */
70cc877f 5197 0x66, 0x0f, 0x1f, 0x84, 0, 0, 0, 0, 0, /* nopw 0x0(%rax,%rax,1) */
ea2d813e
RM		 5198
5199 /* 32 bytes of nop to pad out to the standard size. */
3ddf1bdd 5200 0x66, 0x66, 0x66, 0x66, 0x66, 0x66, /* excess data16 prefixes */
8059fb19 5201 0x2e, 0x0f, 0x1f, 0x84, 0, 0, 0, 0, 0, /* nopw %cs:0x0(%rax,%rax,1) */
3ddf1bdd 5202 0x66, 0x66, 0x66, 0x66, 0x66, 0x66, /* excess data16 prefixes */
8059fb19 5203 0x2e, 0x0f, 0x1f, 0x84, 0, 0, 0, 0, 0, /* nopw %cs:0x0(%rax,%rax,1) */
07d6d2b8
AM		 5204 0x66, /* excess data16 prefix */
5205 0x90 /* nop */
8059fb19
RM		 5206 };
5207
5208static const bfd_byte elf_x86_64_nacl_plt_entry[NACL_PLT_ENTRY_SIZE] =
5209 {
5210 0x4c, 0x8b, 0x1d, 0, 0, 0, 0, /* mov name@GOTPCREL(%rip),%r11 */
07d6d2b8
AM		 5211 0x41, 0x83, 0xe3, NACLMASK, /* and $-32, %r11d */
5212 0x4d, 0x01, 0xfb, /* add %r15, %r11 */
5213 0x41, 0xff, 0xe3, /* jmpq *%r11 */
8059fb19
RM		 5214
5215 /* 15-byte nop sequence to pad out to the next 32-byte boundary. */
3ddf1bdd 5216 0x66, 0x66, 0x66, 0x66, 0x66, 0x66, /* excess data16 prefixes */
8059fb19
RM		 5217 0x2e, 0x0f, 0x1f, 0x84, 0, 0, 0, 0, 0, /* nopw %cs:0x0(%rax,%rax,1) */
5218
5219 /* Lazy GOT entries point here (32-byte aligned). */
07d6d2b8
AM		 5220 0x68, /* pushq immediate */
5221 0, 0, 0, 0, /* replaced with index into relocation table. */
5222 0xe9, /* jmp relative */
5223 0, 0, 0, 0, /* replaced with offset to start of .plt0. */
8059fb19 5224
07d6d2b8 5225 /* 22 bytes of nop to pad out to the standard size. */
3ddf1bdd 5226 0x66, 0x66, 0x66, 0x66, 0x66, 0x66, /* excess data16 prefixes */
8059fb19 5227 0x2e, 0x0f, 0x1f, 0x84, 0, 0, 0, 0, 0, /* nopw %cs:0x0(%rax,%rax,1) */
07d6d2b8 5228 0x0f, 0x1f, 0x80, 0, 0, 0, 0, /* nopl 0x0(%rax) */
8059fb19
RM		 5229 };
5230
5231/* .eh_frame covering the .plt section. */
5232
5233static const bfd_byte elf_x86_64_nacl_eh_frame_plt[] =
5234 {
07d6d2b8
AM		 5235#if (PLT_CIE_LENGTH != 20 \
5236 || PLT_FDE_LENGTH != 36 \
5237 || PLT_FDE_START_OFFSET != 4 + PLT_CIE_LENGTH + 8 \
8059fb19 5238 || PLT_FDE_LEN_OFFSET != 4 + PLT_CIE_LENGTH + 12)
851b6fa1 5239# error "Need elf_x86_backend_data parameters for eh_frame_plt offsets!"
8059fb19
RM		 5240#endif
5241 PLT_CIE_LENGTH, 0, 0, 0, /* CIE length */
5242 0, 0, 0, 0, /* CIE ID */
5243 1, /* CIE version */
07d6d2b8 5244 'z', 'R', 0, /* Augmentation string */
8059fb19 5245 1, /* Code alignment factor */
07d6d2b8 5246 0x78, /* Data alignment factor */
8059fb19
RM		 5247 16, /* Return address column */
5248 1, /* Augmentation size */
5249 DW_EH_PE_pcrel | DW_EH_PE_sdata4, /* FDE encoding */
5250 DW_CFA_def_cfa, 7, 8, /* DW_CFA_def_cfa: r7 (rsp) ofs 8 */
5251 DW_CFA_offset + 16, 1, /* DW_CFA_offset: r16 (rip) at cfa-8 */
5252 DW_CFA_nop, DW_CFA_nop,
5253
5254 PLT_FDE_LENGTH, 0, 0, 0, /* FDE length */
5255 PLT_CIE_LENGTH + 8, 0, 0, 0,/* CIE pointer */
5256 0, 0, 0, 0, /* R_X86_64_PC32 .plt goes here */
5257 0, 0, 0, 0, /* .plt size goes here */
5258 0, /* Augmentation size */
5259 DW_CFA_def_cfa_offset, 16, /* DW_CFA_def_cfa_offset: 16 */
5260 DW_CFA_advance_loc + 6, /* DW_CFA_advance_loc: 6 to __PLT__+6 */
5261 DW_CFA_def_cfa_offset, 24, /* DW_CFA_def_cfa_offset: 24 */
5262 DW_CFA_advance_loc + 58, /* DW_CFA_advance_loc: 58 to __PLT__+64 */
5263 DW_CFA_def_cfa_expression, /* DW_CFA_def_cfa_expression */
5264 13, /* Block length */
5265 DW_OP_breg7, 8, /* DW_OP_breg7 (rsp): 8 */
5266 DW_OP_breg16, 0, /* DW_OP_breg16 (rip): 0 */
5267 DW_OP_const1u, 63, DW_OP_and, DW_OP_const1u, 37, DW_OP_ge,
5268 DW_OP_lit3, DW_OP_shl, DW_OP_plus,
5269 DW_CFA_nop, DW_CFA_nop
5270 };
5271
765e526c 5272static const struct elf_x86_lazy_plt_layout elf_x86_64_nacl_plt =
8059fb19 5273 {
07d6d2b8
AM		 5274 elf_x86_64_nacl_plt0_entry, /* plt0_entry */
5275 NACL_PLT_ENTRY_SIZE, /* plt0_entry_size */
5276 elf_x86_64_nacl_plt_entry, /* plt_entry */
5277 NACL_PLT_ENTRY_SIZE, /* plt_entry_size */
92e68c1d
L		 5278 elf_x86_64_nacl_plt0_entry, /* plt_tlsdesc_entry */
5279 NACL_PLT_ENTRY_SIZE, /* plt_tlsdesc_entry_size */
5280 2, /* plt_tlsdesc_got1_offset */
5281 9, /* plt_tlsdesc_got2_offset */
5282 6, /* plt_tlsdesc_got1_insn_end */
5283 13, /* plt_tlsdesc_got2_insn_end */
07d6d2b8
AM		 5284 2, /* plt0_got1_offset */
5285 9, /* plt0_got2_offset */
5286 13, /* plt0_got2_insn_end */
5287 3, /* plt_got_offset */
5288 33, /* plt_reloc_offset */
5289 38, /* plt_plt_offset */
5290 7, /* plt_got_insn_size */
5291 42, /* plt_plt_insn_end */
5292 32, /* plt_lazy_offset */
5293 elf_x86_64_nacl_plt0_entry, /* pic_plt0_entry */
5294 elf_x86_64_nacl_plt_entry, /* pic_plt_entry */
5295 elf_x86_64_nacl_eh_frame_plt, /* eh_frame_plt */
38b12349
L		 5296 sizeof (elf_x86_64_nacl_eh_frame_plt) /* eh_frame_plt_size */
5297 };
5298
851b6fa1 5299static const struct elf_x86_backend_data elf_x86_64_nacl_arch_bed =
38b12349 5300 {
07d6d2b8 5301 is_nacl /* os */
8059fb19
RM		 5302 };
5303
5304#undef elf_backend_arch_data
5305#define elf_backend_arch_data &elf_x86_64_nacl_arch_bed
5306
64b384e1
RM		 5307#undef elf_backend_object_p
5308#define elf_backend_object_p elf64_x86_64_nacl_elf_object_p
5a68afcf
RM		 5309#undef elf_backend_modify_segment_map
5310#define elf_backend_modify_segment_map nacl_modify_segment_map
5311#undef elf_backend_modify_program_headers
5312#define elf_backend_modify_program_headers nacl_modify_program_headers
887badb3
RM		 5313#undef elf_backend_final_write_processing
5314#define elf_backend_final_write_processing nacl_final_write_processing
5a68afcf 5315
8059fb19
RM		 5316#include "elf64-target.h"
5317
5318/* Native Client x32 support. */
5319
64b384e1
RM		 5320static bfd_boolean
5321elf32_x86_64_nacl_elf_object_p (bfd *abfd)
5322{
5323 /* Set the right machine number for a NaCl x86-64 ELF32 file. */
5324 bfd_default_set_arch_mach (abfd, bfd_arch_i386, bfd_mach_x64_32_nacl);
5325 return TRUE;
5326}
5327
07d6d2b8 5328#undef TARGET_LITTLE_SYM
6d00b590 5329#define TARGET_LITTLE_SYM x86_64_elf32_nacl_vec
07d6d2b8 5330#undef TARGET_LITTLE_NAME
8059fb19
RM		 5331#define TARGET_LITTLE_NAME "elf32-x86-64-nacl"
5332#undef elf32_bed
5333#define elf32_bed elf32_x86_64_nacl_bed
5334
8059fb19
RM		 5335#define bfd_elf32_bfd_reloc_type_lookup \
5336 elf_x86_64_reloc_type_lookup
5337#define bfd_elf32_bfd_reloc_name_lookup \
5338 elf_x86_64_reloc_name_lookup
b7365e5d
L		 5339#define bfd_elf32_get_synthetic_symtab \
5340 elf_x86_64_get_synthetic_symtab
8059fb19
RM		 5341
5342#undef elf_backend_object_p
5343#define elf_backend_object_p \
64b384e1 5344 elf32_x86_64_nacl_elf_object_p
8059fb19
RM		 5345
5346#undef elf_backend_bfd_from_remote_memory
5347#define elf_backend_bfd_from_remote_memory \
5348 _bfd_elf32_bfd_from_remote_memory
5349
5350#undef elf_backend_size_info
5351#define elf_backend_size_info \
5352 _bfd_elf32_size_info
5353
8f56f7a2
L		 5354#undef elf32_bed
5355#define elf32_bed elf32_x86_64_bed
5356
8059fb19
RM		 5357#include "elf32-target.h"
5358
5359/* Restore defaults. */
5a68afcf 5360#undef elf_backend_object_p
8059fb19 5361#define elf_backend_object_p elf64_x86_64_elf_object_p
5a68afcf
RM		 5362#undef elf_backend_bfd_from_remote_memory
5363#undef elf_backend_size_info
5364#undef elf_backend_modify_segment_map
5365#undef elf_backend_modify_program_headers
887badb3 5366#undef elf_backend_final_write_processing
8059fb19 5367
8a9036a4
L		 5368/* Intel L1OM support. */
5369
5370static bfd_boolean
5371elf64_l1om_elf_object_p (bfd *abfd)
5372{
5373 /* Set the right machine number for an L1OM elf64 file. */
5374 bfd_default_set_arch_mach (abfd, bfd_arch_l1om, bfd_mach_l1om);
5375 return TRUE;
5376}
5377
5378#undef TARGET_LITTLE_SYM
6d00b590 5379#define TARGET_LITTLE_SYM l1om_elf64_vec
8a9036a4
L		 5380#undef TARGET_LITTLE_NAME
5381#define TARGET_LITTLE_NAME "elf64-l1om"
5382#undef ELF_ARCH
5383#define ELF_ARCH bfd_arch_l1om
5384
5385#undef ELF_MACHINE_CODE
5386#define ELF_MACHINE_CODE EM_L1OM
5387
5388#undef ELF_OSABI
5389
5390#undef elf64_bed
5391#define elf64_bed elf64_l1om_bed
5392
5393#undef elf_backend_object_p
5394#define elf_backend_object_p elf64_l1om_elf_object_p
5395
8059fb19
RM		 5396/* Restore defaults. */
5397#undef ELF_MAXPAGESIZE
5398#undef ELF_MINPAGESIZE
5399#undef ELF_COMMONPAGESIZE
f6aec96d
L		 5400#if DEFAULT_LD_Z_SEPARATE_CODE
5401# define ELF_MAXPAGESIZE 0x1000
5402#else
5403# define ELF_MAXPAGESIZE 0x200000
5404#endif
8059fb19
RM		 5405#define ELF_MINPAGESIZE 0x1000
5406#define ELF_COMMONPAGESIZE 0x1000
5407#undef elf_backend_plt_alignment
5408#define elf_backend_plt_alignment 4
5409#undef elf_backend_arch_data
5410#define elf_backend_arch_data &elf_x86_64_arch_bed
1a0c107f 5411
8a9036a4
L		 5412#include "elf64-target.h"
5413
5414/* FreeBSD L1OM support. */
5415
5416#undef TARGET_LITTLE_SYM
6d00b590 5417#define TARGET_LITTLE_SYM l1om_elf64_fbsd_vec
8a9036a4
L		 5418#undef TARGET_LITTLE_NAME
5419#define TARGET_LITTLE_NAME "elf64-l1om-freebsd"
5420
5421#undef ELF_OSABI
5422#define ELF_OSABI ELFOSABI_FREEBSD
5423
5424#undef elf64_bed
5425#define elf64_bed elf64_l1om_fbsd_bed
5426
8a9036a4 5427#include "elf64-target.h"
351f65ca 5428
7a9068fe
L		 5429/* Intel K1OM support. */
5430
5431static bfd_boolean
5432elf64_k1om_elf_object_p (bfd *abfd)
5433{
5434 /* Set the right machine number for an K1OM elf64 file. */
5435 bfd_default_set_arch_mach (abfd, bfd_arch_k1om, bfd_mach_k1om);
5436 return TRUE;
5437}
5438
5439#undef TARGET_LITTLE_SYM
6d00b590 5440#define TARGET_LITTLE_SYM k1om_elf64_vec
7a9068fe
L		 5441#undef TARGET_LITTLE_NAME
5442#define TARGET_LITTLE_NAME "elf64-k1om"
5443#undef ELF_ARCH
5444#define ELF_ARCH bfd_arch_k1om
5445
5446#undef ELF_MACHINE_CODE
5447#define ELF_MACHINE_CODE EM_K1OM
5448
5449#undef ELF_OSABI
5450
5451#undef elf64_bed
5452#define elf64_bed elf64_k1om_bed
5453
5454#undef elf_backend_object_p
5455#define elf_backend_object_p elf64_k1om_elf_object_p
5456
5457#undef elf_backend_static_tls_alignment
5458
5459#undef elf_backend_want_plt_sym
5460#define elf_backend_want_plt_sym 0
5461
5462#include "elf64-target.h"
5463
5464/* FreeBSD K1OM support. */
5465
5466#undef TARGET_LITTLE_SYM
6d00b590 5467#define TARGET_LITTLE_SYM k1om_elf64_fbsd_vec
7a9068fe
L		 5468#undef TARGET_LITTLE_NAME
5469#define TARGET_LITTLE_NAME "elf64-k1om-freebsd"
5470
5471#undef ELF_OSABI
5472#define ELF_OSABI ELFOSABI_FREEBSD
5473
5474#undef elf64_bed
5475#define elf64_bed elf64_k1om_fbsd_bed
5476
5477#include "elf64-target.h"
5478
351f65ca
L		 5479/* 32bit x86-64 support. */
5480
351f65ca 5481#undef TARGET_LITTLE_SYM
6d00b590 5482#define TARGET_LITTLE_SYM x86_64_elf32_vec
351f65ca
L		 5483#undef TARGET_LITTLE_NAME
5484#define TARGET_LITTLE_NAME "elf32-x86-64"
8059fb19 5485#undef elf32_bed
351f65ca
L		 5486
5487#undef ELF_ARCH
5488#define ELF_ARCH bfd_arch_i386
5489
5490#undef ELF_MACHINE_CODE
5491#define ELF_MACHINE_CODE EM_X86_64
5492
351f65ca
L		 5493#undef ELF_OSABI
5494
351f65ca
L		 5495#undef elf_backend_object_p
5496#define elf_backend_object_p \
5497 elf32_x86_64_elf_object_p
5498
5499#undef elf_backend_bfd_from_remote_memory
5500#define elf_backend_bfd_from_remote_memory \
5501 _bfd_elf32_bfd_from_remote_memory
5502
5503#undef elf_backend_size_info
5504#define elf_backend_size_info \
5505 _bfd_elf32_size_info
5506
5507#include "elf32-target.h"
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