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x86-64: Add TLSDESC fields to elf_x86_lazy_plt_layout
[deliverable/binutils-gdb.git] / bfd / elf64-x86-64.c
CommitLineData
351f65ca 1/* X86-64 specific support for ELF
219d1afa 2 Copyright (C) 2000-2018 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
L		 2391
2392 BFD_ASSERT (is_x86_elf (input_bfd, htab));
2393
765e526c 2394 plt_entry_size = htab->plt.plt_entry_size;
0ffa91dd 2395 symtab_hdr = &elf_symtab_hdr (input_bfd);
8d88c4ca
NC		 2396 sym_hashes = elf_sym_hashes (input_bfd);
2397 local_got_offsets = elf_local_got_offsets (input_bfd);
0afcef53 2398 local_tlsdesc_gotents = elf_x86_local_tlsdesc_gotent (input_bfd);
8d88c4ca 2399
0afcef53 2400 _bfd_x86_elf_set_tls_module_base (info);
9f03412a 2401
60f2e42e 2402 rel = wrel = relocs;
8d88c4ca 2403 relend = relocs + input_section->reloc_count;
60f2e42e 2404 for (; rel < relend; wrel++, rel++)
8d88c4ca 2405 {
419414ea 2406 unsigned int r_type, r_type_tls;
8d88c4ca
NC		 2407 reloc_howto_type *howto;
2408 unsigned long r_symndx;
2409 struct elf_link_hash_entry *h;
0afcef53 2410 struct elf_x86_link_hash_entry *eh;
8d88c4ca
NC		 2411 Elf_Internal_Sym *sym;
2412 asection *sec;
0ff2b86e 2413 bfd_vma off, offplt, plt_offset;
8d88c4ca 2414 bfd_vma relocation;
b34976b6 2415 bfd_boolean unresolved_reloc;
8d88c4ca 2416 bfd_reloc_status_type r;
bffbf940 2417 int tls_type;
0ff2b86e 2418 asection *base_got, *resolved_plt;
1788fc08 2419 bfd_vma st_size;
aec6b87e 2420 bfd_boolean resolved_to_zero;
9e9821dd 2421 bfd_boolean relative_reloc;
78984959 2422 bfd_boolean converted_reloc;
aebcc8ff 2423 bfd_boolean need_copy_reloc_in_pie;
8d88c4ca 2424
351f65ca 2425 r_type = ELF32_R_TYPE (rel->r_info);
fe4770f4
AJ		 2426 if (r_type == (int) R_X86_64_GNU_VTINHERIT
2427 || r_type == (int) R_X86_64_GNU_VTENTRY)
18954b29
L		 2428 {
2429 if (wrel != rel)
2430 *wrel = *rel;
2431 continue;
2432 }
8d88c4ca 2433
78984959
L		 2434 converted_reloc = (r_type & R_X86_64_converted_reloc_bit) != 0;
2435 r_type &= ~R_X86_64_converted_reloc_bit;
2436
9911c0fc 2437 if (r_type >= (int) R_X86_64_standard)
47aeb64c 2438 return _bfd_unrecognized_reloc (input_bfd, input_section, r_type);
8d88c4ca 2439
d7921315 2440 if (r_type != (int) R_X86_64_32
eed180f8 2441 || ABI_64_P (output_bfd))
d7921315
L		 2442 howto = x86_64_elf_howto_table + r_type;
2443 else
2444 howto = (x86_64_elf_howto_table
2445 + ARRAY_SIZE (x86_64_elf_howto_table) - 1);
351f65ca 2446 r_symndx = htab->r_sym (rel->r_info);
8d88c4ca
NC		 2447 h = NULL;
2448 sym = NULL;
2449 sec = NULL;
b34976b6 2450 unresolved_reloc = FALSE;
8d88c4ca 2451 if (r_symndx < symtab_hdr->sh_info)
8da6118f
KH		 2452 {
2453 sym = local_syms + r_symndx;
2454 sec = local_sections[r_symndx];
c434dee6 2455
c25bc9fc
L		 2456 relocation = _bfd_elf_rela_local_sym (output_bfd, sym,
2457 &sec, rel);
1788fc08 2458 st_size = sym->st_size;
c25bc9fc
L		 2459
2460 /* Relocate against local STT_GNU_IFUNC symbol. */
0e1862bb 2461 if (!bfd_link_relocatable (info)
351f65ca 2462 && ELF_ST_TYPE (sym->st_info) == STT_GNU_IFUNC)
c25bc9fc 2463 {
0afcef53
L		 2464 h = _bfd_elf_x86_get_local_sym_hash (htab, input_bfd,
2465 rel, FALSE);
c25bc9fc
L		 2466 if (h == NULL)
2467 abort ();
2468
eed180f8 2469 /* Set STT_GNU_IFUNC symbol value. */
c25bc9fc
L		 2470 h->root.u.def.value = sym->st_value;
2471 h->root.u.def.section = sec;
2472 }
8da6118f 2473 }
8d88c4ca 2474 else
8da6118f 2475 {
c9736ba0 2476 bfd_boolean warned ATTRIBUTE_UNUSED;
62d887d4 2477 bfd_boolean ignored ATTRIBUTE_UNUSED;
c434dee6 2478
b2a8e766
AM		 2479 RELOC_FOR_GLOBAL_SYMBOL (info, input_bfd, input_section, rel,
2480 r_symndx, symtab_hdr, sym_hashes,
2481 h, sec, relocation,
62d887d4 2482 unresolved_reloc, warned, ignored);
1788fc08 2483 st_size = h->size;
8da6118f 2484 }
ab96bf03 2485
dbaa2011 2486 if (sec != NULL && discarded_section (sec))
60f2e42e
L		 2487 {
2488 _bfd_clear_contents (howto, input_bfd, input_section,
2489 contents + rel->r_offset);
2490 wrel->r_offset = rel->r_offset;
2491 wrel->r_info = 0;
2492 wrel->r_addend = 0;
2493
2494 /* For ld -r, remove relocations in debug sections against
2495 sections defined in discarded sections. Not done for
2496 eh_frame editing code expects to be present. */
2497 if (bfd_link_relocatable (info)
2498 && (input_section->flags & SEC_DEBUGGING))
2499 wrel--;
2500
2501 continue;
2502 }
ab96bf03 2503
0e1862bb 2504 if (bfd_link_relocatable (info))
2d5da473
L		 2505 {
2506 if (wrel != rel)
2507 *wrel = *rel;
2508 continue;
2509 }
ab96bf03 2510
1788fc08 2511 if (rel->r_addend == 0 && !ABI_64_P (output_bfd))
64d25c44 2512 {
1788fc08
L		 2513 if (r_type == R_X86_64_64)
2514 {
2515 /* For x32, treat R_X86_64_64 like R_X86_64_32 and
2516 zero-extend it to 64bit if addend is zero. */
2517 r_type = R_X86_64_32;
2518 memset (contents + rel->r_offset + 4, 0, 4);
2519 }
2520 else if (r_type == R_X86_64_SIZE64)
2521 {
2522 /* For x32, treat R_X86_64_SIZE64 like R_X86_64_SIZE32 and
2523 zero-extend it to 64bit if addend is zero. */
2524 r_type = R_X86_64_SIZE32;
2525 memset (contents + rel->r_offset + 4, 0, 4);
2526 }
64d25c44
L		 2527 }
2528
0afcef53 2529 eh = (struct elf_x86_link_hash_entry *) h;
0ff2b86e 2530
cbe950e9
L		 2531 /* Since STT_GNU_IFUNC symbol must go through PLT, we handle
2532 it here if it is defined in a non-shared object. */
2533 if (h != NULL
2534 && h->type == STT_GNU_IFUNC
2535 && h->def_regular)
2536 {
cbe950e9 2537 bfd_vma plt_index;
4c544807 2538 const char *name;
cbe950e9 2539
97dc35c8
L		 2540 if ((input_section->flags & SEC_ALLOC) == 0)
2541 {
347a8774
L		 2542 /* If this is a SHT_NOTE section without SHF_ALLOC, treat
2543 STT_GNU_IFUNC symbol as STT_FUNC. */
2544 if (elf_section_type (input_section) == SHT_NOTE)
2545 goto skip_ifunc;
97dc35c8
L		 2546 /* Dynamic relocs are not propagated for SEC_DEBUGGING
2547 sections because such sections are not SEC_ALLOC and
2548 thus ld.so will not process them. */
2549 if ((input_section->flags & SEC_DEBUGGING) != 0)
0eace210 2550 continue;
97dc35c8
L		 2551 abort ();
2552 }
233cc9c1
L		 2553
2554 switch (r_type)
2555 {
2556 default:
2557 break;
2558
2559 case R_X86_64_GOTPCREL:
2560 case R_X86_64_GOTPCRELX:
2561 case R_X86_64_REX_GOTPCRELX:
2562 case R_X86_64_GOTPCREL64:
2563 base_got = htab->elf.sgot;
2564 off = h->got.offset;
2565
2566 if (base_got == NULL)
2567 abort ();
2568
2569 if (off == (bfd_vma) -1)
2570 {
2571 /* We can't use h->got.offset here to save state, or
2572 even just remember the offset, as finish_dynamic_symbol
2573 would use that as offset into .got. */
2574
2575 if (h->plt.offset == (bfd_vma) -1)
2576 abort ();
2577
2578 if (htab->elf.splt != NULL)
2579 {
38b12349 2580 plt_index = (h->plt.offset / plt_entry_size
765e526c 2581 - htab->plt.has_plt0);
233cc9c1
L		 2582 off = (plt_index + 3) * GOT_ENTRY_SIZE;
2583 base_got = htab->elf.sgotplt;
2584 }
2585 else
2586 {
2587 plt_index = h->plt.offset / plt_entry_size;
2588 off = plt_index * GOT_ENTRY_SIZE;
2589 base_got = htab->elf.igotplt;
2590 }
2591
2592 if (h->dynindx == -1
2593 || h->forced_local
2594 || info->symbolic)
2595 {
2596 /* This references the local defitionion. We must
2597 initialize this entry in the global offset table.
2598 Since the offset must always be a multiple of 8,
2599 we use the least significant bit to record
2600 whether we have initialized it already.
2601
2602 When doing a dynamic link, we create a .rela.got
2603 relocation entry to initialize the value. This
2604 is done in the finish_dynamic_symbol routine. */
2605 if ((off & 1) != 0)
2606 off &= ~1;
2607 else
2608 {
2609 bfd_put_64 (output_bfd, relocation,
2610 base_got->contents + off);
2611 /* Note that this is harmless for the GOTPLT64
2612 case, as -1 | 1 still is -1. */
2613 h->got.offset |= 1;
2614 }
2615 }
2616 }
2617
2618 relocation = (base_got->output_section->vma
2619 + base_got->output_offset + off);
2620
2621 goto do_relocation;
2622 }
2623
2624 if (h->plt.offset == (bfd_vma) -1)
2625 {
2626 /* Handle static pointers of STT_GNU_IFUNC symbols. */
2627 if (r_type == htab->pointer_r_type
2628 && (input_section->flags & SEC_CODE) == 0)
2629 goto do_ifunc_pointer;
2630 goto bad_ifunc_reloc;
2631 }
cbe950e9
L		 2632
2633 /* STT_GNU_IFUNC symbol must go through PLT. */
0ff2b86e
L		 2634 if (htab->elf.splt != NULL)
2635 {
f2c29a16 2636 if (htab->plt_second != NULL)
0ff2b86e 2637 {
f2c29a16
L		 2638 resolved_plt = htab->plt_second;
2639 plt_offset = eh->plt_second.offset;
0ff2b86e
L		 2640 }
2641 else
2642 {
2643 resolved_plt = htab->elf.splt;
2644 plt_offset = h->plt.offset;
2645 }
2646 }
2647 else
2648 {
2649 resolved_plt = htab->elf.iplt;
2650 plt_offset = h->plt.offset;
2651 }
2652
2653 relocation = (resolved_plt->output_section->vma
2654 + resolved_plt->output_offset + plt_offset);
cbe950e9
L		 2655
2656 switch (r_type)
2657 {
2658 default:
233cc9c1 2659bad_ifunc_reloc:
4c544807
L		 2660 if (h->root.root.string)
2661 name = h->root.root.string;
2662 else
2663 name = bfd_elf_sym_name (input_bfd, symtab_hdr, sym,
2664 NULL);
4eca0228 2665 _bfd_error_handler
695344c0 2666 /* xgettext:c-format */
871b3ab2 2667 (_("%pB: relocation %s against STT_GNU_IFUNC "
233cc9c1
L		 2668 "symbol `%s' isn't supported"), input_bfd,
2669 howto->name, name);
cbe950e9
L		 2670 bfd_set_error (bfd_error_bad_value);
2671 return FALSE;
2672
2673 case R_X86_64_32S:
0e1862bb 2674 if (bfd_link_pic (info))
cbe950e9 2675 abort ();
710ab287
L		 2676 goto do_relocation;
2677
248775ba
L		 2678 case R_X86_64_32:
2679 if (ABI_64_P (output_bfd))
2680 goto do_relocation;
17672001 2681 /* FALLTHROUGH */
eed180f8 2682 case R_X86_64_64:
233cc9c1 2683do_ifunc_pointer:
710ab287
L		 2684 if (rel->r_addend != 0)
2685 {
4c544807
L		 2686 if (h->root.root.string)
2687 name = h->root.root.string;
2688 else
2689 name = bfd_elf_sym_name (input_bfd, symtab_hdr,
2690 sym, NULL);
4eca0228 2691 _bfd_error_handler
695344c0 2692 /* xgettext:c-format */
871b3ab2 2693 (_("%pB: relocation %s against STT_GNU_IFUNC "
2dcf00ce
AM		 2694 "symbol `%s' has non-zero addend: %" PRId64),
2695 input_bfd, howto->name, name, (int64_t) rel->r_addend);
710ab287
L		 2696 bfd_set_error (bfd_error_bad_value);
2697 return FALSE;
2698 }
2699
2700 /* Generate dynamic relcoation only when there is a
233cc9c1
L		 2701 non-GOT reference in a shared object or there is no
2702 PLT. */
2703 if ((bfd_link_pic (info) && h->non_got_ref)
2704 || h->plt.offset == (bfd_vma) -1)
710ab287
L		 2705 {
2706 Elf_Internal_Rela outrel;
710ab287
L		 2707 asection *sreloc;
2708
c25bc9fc
L		 2709 /* Need a dynamic relocation to get the real function
2710 address. */
710ab287
L		 2711 outrel.r_offset = _bfd_elf_section_offset (output_bfd,
2712 info,
2713 input_section,
2714 rel->r_offset);
2715 if (outrel.r_offset == (bfd_vma) -1
2716 || outrel.r_offset == (bfd_vma) -2)
2717 abort ();
2718
2719 outrel.r_offset += (input_section->output_section->vma
2720 + input_section->output_offset);
2721
cf1070f1 2722 if (POINTER_LOCAL_IFUNC_P (info, h))
710ab287 2723 {
871b3ab2 2724 info->callbacks->minfo (_("Local IFUNC function `%s' in %pB\n"),
6322e5c5
L		 2725 h->root.root.string,
2726 h->root.u.def.section->owner);
2727
710ab287 2728 /* This symbol is resolved locally. */
56b8aada
L		 2729 outrel.r_info = htab->r_info (0, R_X86_64_IRELATIVE);
2730 outrel.r_addend = (h->root.u.def.value
2731 + h->root.u.def.section->output_section->vma
2732 + h->root.u.def.section->output_offset);
710ab287
L		 2733 }
2734 else
2735 {
351f65ca 2736 outrel.r_info = htab->r_info (h->dynindx, r_type);
710ab287
L		 2737 outrel.r_addend = 0;
2738 }
2739
233cc9c1
L		 2740 /* Dynamic relocations are stored in
2741 1. .rela.ifunc section in PIC object.
2742 2. .rela.got section in dynamic executable.
2743 3. .rela.iplt section in static executable. */
2744 if (bfd_link_pic (info))
2745 sreloc = htab->elf.irelifunc;
2746 else if (htab->elf.splt != NULL)
2747 sreloc = htab->elf.srelgot;
2748 else
2749 sreloc = htab->elf.irelplt;
351f65ca 2750 elf_append_rela (output_bfd, sreloc, &outrel);
710ab287
L		 2751
2752 /* If this reloc is against an external symbol, we
2753 do not want to fiddle with the addend. Otherwise,
2754 we need to include the symbol value so that it
2755 becomes an addend for the dynamic reloc. For an
2756 internal symbol, we have updated addend. */
56b8aada 2757 continue;
710ab287 2758 }
17672001 2759 /* FALLTHROUGH */
cbe950e9 2760 case R_X86_64_PC32:
c3320543 2761 case R_X86_64_PC32_BND:
cbe950e9
L		 2762 case R_X86_64_PC64:
2763 case R_X86_64_PLT32:
c3320543 2764 case R_X86_64_PLT32_BND:
cbe950e9 2765 goto do_relocation;
cbe950e9
L		 2766 }
2767 }
2768
347a8774 2769skip_ifunc:
aec6b87e 2770 resolved_to_zero = (eh != NULL
c5bce5c6 2771 && UNDEFINED_WEAK_RESOLVED_TO_ZERO (info, eh));
aec6b87e 2772
70256ad8
AJ		 2773 /* When generating a shared object, the relocations handled here are
2774 copied into the output file to be resolved at run time. */
2775 switch (r_type)
2776 {
2777 case R_X86_64_GOT32:
7b81dfbb 2778 case R_X86_64_GOT64:
70256ad8
AJ		 2779 /* Relocation is to the entry for this symbol in the global
2780 offset table. */
70256ad8 2781 case R_X86_64_GOTPCREL:
56ceb5b5
L		 2782 case R_X86_64_GOTPCRELX:
2783 case R_X86_64_REX_GOTPCRELX:
7b81dfbb
AJ		 2784 case R_X86_64_GOTPCREL64:
2785 /* Use global offset table entry as symbol value. */
2786 case R_X86_64_GOTPLT64:
de194d85 2787 /* This is obsolete and treated the same as GOT64. */
6de2ae4a 2788 base_got = htab->elf.sgot;
7b81dfbb 2789
6de2ae4a 2790 if (htab->elf.sgot == NULL)
c434dee6 2791 abort ();
053579d7 2792
9e9821dd 2793 relative_reloc = FALSE;
51e0a107 2794 if (h != NULL)
70256ad8 2795 {
c434dee6 2796 off = h->got.offset;
7b81dfbb 2797 if (h->needs_plt
eed180f8 2798 && h->plt.offset != (bfd_vma)-1
7b81dfbb
AJ		 2799 && off == (bfd_vma)-1)
2800 {
2801 /* We can't use h->got.offset here to save
2802 state, or even just remember the offset, as
2803 finish_dynamic_symbol would use that as offset into
2804 .got. */
38b12349 2805 bfd_vma plt_index = (h->plt.offset / plt_entry_size
765e526c 2806 - htab->plt.has_plt0);
7b81dfbb 2807 off = (plt_index + 3) * GOT_ENTRY_SIZE;
6de2ae4a 2808 base_got = htab->elf.sgotplt;
7b81dfbb
AJ		 2809 }
2810
2eba97c2 2811 if (RESOLVED_LOCALLY_P (info, h, htab))
51e0a107 2812 {
2eba97c2
L		 2813 /* We must initialize this entry in the global offset
2814 table. Since the offset must always be a multiple
2815 of 8, we use the least significant bit to record
2816 whether we have initialized it already.
51e0a107
JH		 2817
2818 When doing a dynamic link, we create a .rela.got
407443a3
AJ		 2819 relocation entry to initialize the value. This is
2820 done in the finish_dynamic_symbol routine. */
51e0a107
JH		 2821 if ((off & 1) != 0)
2822 off &= ~1;
2823 else
2824 {
2825 bfd_put_64 (output_bfd, relocation,
7b81dfbb
AJ		 2826 base_got->contents + off);
2827 /* Note that this is harmless for the GOTPLT64 case,
eed180f8 2828 as -1 | 1 still is -1. */
51e0a107 2829 h->got.offset |= 1;
9e9821dd 2830
f70656b2 2831 if (GENERATE_RELATIVE_RELOC_P (info, h))
9e9821dd
L		 2832 {
2833 /* If this symbol isn't dynamic in PIC,
2834 generate R_X86_64_RELATIVE here. */
2835 eh->no_finish_dynamic_symbol = 1;
2836 relative_reloc = TRUE;
2837 }
51e0a107
JH		 2838 }
2839 }
053579d7 2840 else
b34976b6 2841 unresolved_reloc = FALSE;
70256ad8 2842 }
51e0a107
JH		 2843 else
2844 {
c434dee6
AJ		 2845 if (local_got_offsets == NULL)
2846 abort ();
51e0a107
JH		 2847
2848 off = local_got_offsets[r_symndx];
2849
2850 /* The offset must always be a multiple of 8. We use
407443a3
AJ		 2851 the least significant bit to record whether we have
2852 already generated the necessary reloc. */
51e0a107
JH		 2853 if ((off & 1) != 0)
2854 off &= ~1;
2855 else
2856 {
c434dee6 2857 bfd_put_64 (output_bfd, relocation,
7b81dfbb 2858 base_got->contents + off);
9e9821dd 2859 local_got_offsets[r_symndx] |= 1;
51e0a107 2860
0e1862bb 2861 if (bfd_link_pic (info))
9e9821dd 2862 relative_reloc = TRUE;
51e0a107 2863 }
51e0a107 2864 }
6a2bda3f 2865
9e9821dd
L		 2866 if (relative_reloc)
2867 {
2868 asection *s;
2869 Elf_Internal_Rela outrel;
2870
2871 /* We need to generate a R_X86_64_RELATIVE reloc
2872 for the dynamic linker. */
2873 s = htab->elf.srelgot;
2874 if (s == NULL)
2875 abort ();
2876
2877 outrel.r_offset = (base_got->output_section->vma
2878 + base_got->output_offset
2879 + off);
2880 outrel.r_info = htab->r_info (0, R_X86_64_RELATIVE);
2881 outrel.r_addend = relocation;
2882 elf_append_rela (output_bfd, s, &outrel);
2883 }
2884
c434dee6
AJ		 2885 if (off >= (bfd_vma) -2)
2886 abort ();
2887
7b81dfbb
AJ		 2888 relocation = base_got->output_section->vma
2889 + base_got->output_offset + off;
56ceb5b5
L		 2890 if (r_type != R_X86_64_GOTPCREL
2891 && r_type != R_X86_64_GOTPCRELX
2892 && r_type != R_X86_64_REX_GOTPCRELX
2893 && r_type != R_X86_64_GOTPCREL64)
6de2ae4a
L		 2894 relocation -= htab->elf.sgotplt->output_section->vma
2895 - htab->elf.sgotplt->output_offset;
c434dee6 2896
70256ad8
AJ		 2897 break;
2898
d6ab8113
JB		 2899 case R_X86_64_GOTOFF64:
2900 /* Relocation is relative to the start of the global offset
2901 table. */
2902
3d949995
L		 2903 /* Check to make sure it isn't a protected function or data
2904 symbol for shared library since it may not be local when
e3c0e327
L		 2905 used as function address or with copy relocation. We also
2906 need to make sure that a symbol is referenced locally. */
0e1862bb 2907 if (bfd_link_pic (info) && h)
d6ab8113 2908 {
e3c0e327
L		 2909 if (!h->def_regular)
2910 {
2911 const char *v;
2912
2913 switch (ELF_ST_VISIBILITY (h->other))
2914 {
2915 case STV_HIDDEN:
2916 v = _("hidden symbol");
2917 break;
2918 case STV_INTERNAL:
2919 v = _("internal symbol");
2920 break;
2921 case STV_PROTECTED:
2922 v = _("protected symbol");
2923 break;
2924 default:
2925 v = _("symbol");
2926 break;
2927 }
2928
4eca0228 2929 _bfd_error_handler
695344c0 2930 /* xgettext:c-format */
871b3ab2 2931 (_("%pB: relocation R_X86_64_GOTOFF64 against undefined %s"
63a5468a 2932 " `%s' can not be used when making a shared object"),
e3c0e327
L		 2933 input_bfd, v, h->root.root.string);
2934 bfd_set_error (bfd_error_bad_value);
2935 return FALSE;
2936 }
0e1862bb 2937 else if (!bfd_link_executable (info)
6999821f 2938 && !SYMBOL_REFERENCES_LOCAL_P (info, h)
e3c0e327
L		 2939 && (h->type == STT_FUNC
2940 || h->type == STT_OBJECT)
2941 && ELF_ST_VISIBILITY (h->other) == STV_PROTECTED)
2942 {
4eca0228 2943 _bfd_error_handler
695344c0 2944 /* xgettext:c-format */
871b3ab2 2945 (_("%pB: relocation R_X86_64_GOTOFF64 against protected %s"
63a5468a 2946 " `%s' can not be used when making a shared object"),
e3c0e327
L		 2947 input_bfd,
2948 h->type == STT_FUNC ? "function" : "data",
2949 h->root.root.string);
2950 bfd_set_error (bfd_error_bad_value);
d6ab8113 2951 return FALSE;
e3c0e327 2952 }
d6ab8113
JB		 2953 }
2954
2955 /* Note that sgot is not involved in this
2956 calculation. We always want the start of .got.plt. If we
2957 defined _GLOBAL_OFFSET_TABLE_ in a different way, as is
2958 permitted by the ABI, we might have to change this
2959 calculation. */
6de2ae4a
L		 2960 relocation -= htab->elf.sgotplt->output_section->vma
2961 + htab->elf.sgotplt->output_offset;
d6ab8113
JB		 2962 break;
2963
2964 case R_X86_64_GOTPC32:
7b81dfbb 2965 case R_X86_64_GOTPC64:
d6ab8113 2966 /* Use global offset table as symbol value. */
6de2ae4a
L		 2967 relocation = htab->elf.sgotplt->output_section->vma
2968 + htab->elf.sgotplt->output_offset;
d6ab8113
JB		 2969 unresolved_reloc = FALSE;
2970 break;
7b81dfbb
AJ		 2971
2972 case R_X86_64_PLTOFF64:
2973 /* Relocation is PLT entry relative to GOT. For local
2974 symbols it's the symbol itself relative to GOT. */
eed180f8 2975 if (h != NULL
7b81dfbb 2976 /* See PLT32 handling. */
9d734efa
L		 2977 && (h->plt.offset != (bfd_vma) -1
2978 || eh->plt_got.offset != (bfd_vma) -1)
6de2ae4a 2979 && htab->elf.splt != NULL)
7b81dfbb 2980 {
9d734efa
L		 2981 if (eh->plt_got.offset != (bfd_vma) -1)
2982 {
2983 /* Use the GOT PLT. */
2984 resolved_plt = htab->plt_got;
2985 plt_offset = eh->plt_got.offset;
2986 }
f2c29a16 2987 else if (htab->plt_second != NULL)
0ff2b86e 2988 {
f2c29a16
L		 2989 resolved_plt = htab->plt_second;
2990 plt_offset = eh->plt_second.offset;
0ff2b86e
L		 2991 }
2992 else
2993 {
2994 resolved_plt = htab->elf.splt;
2995 plt_offset = h->plt.offset;
2996 }
2997
2998 relocation = (resolved_plt->output_section->vma
2999 + resolved_plt->output_offset
3000 + plt_offset);
7b81dfbb
AJ		 3001 unresolved_reloc = FALSE;
3002 }
3003
6de2ae4a
L		 3004 relocation -= htab->elf.sgotplt->output_section->vma
3005 + htab->elf.sgotplt->output_offset;
7b81dfbb 3006 break;
d6ab8113 3007
70256ad8 3008 case R_X86_64_PLT32:
c3320543 3009 case R_X86_64_PLT32_BND:
70256ad8
AJ		 3010 /* Relocation is to the entry for this symbol in the
3011 procedure linkage table. */
3012
3013 /* Resolve a PLT32 reloc against a local symbol directly,
407443a3 3014 without using the procedure linkage table. */
70256ad8
AJ		 3015 if (h == NULL)
3016 break;
3017
dd7e64d4
L		 3018 if ((h->plt.offset == (bfd_vma) -1
3019 && eh->plt_got.offset == (bfd_vma) -1)
6de2ae4a 3020 || htab->elf.splt == NULL)
70256ad8
AJ		 3021 {
3022 /* We didn't make a PLT entry for this symbol. This
407443a3
AJ		 3023 happens when statically linking PIC code, or when
3024 using -Bsymbolic. */
70256ad8
AJ		 3025 break;
3026 }
3027
451875b4 3028use_plt:
dd7e64d4 3029 if (h->plt.offset != (bfd_vma) -1)
0ff2b86e 3030 {
f2c29a16 3031 if (htab->plt_second != NULL)
dd7e64d4 3032 {
f2c29a16
L		 3033 resolved_plt = htab->plt_second;
3034 plt_offset = eh->plt_second.offset;
dd7e64d4
L		 3035 }
3036 else
3037 {
3038 resolved_plt = htab->elf.splt;
3039 plt_offset = h->plt.offset;
3040 }
0ff2b86e
L		 3041 }
3042 else
3043 {
dd7e64d4
L		 3044 /* Use the GOT PLT. */
3045 resolved_plt = htab->plt_got;
3046 plt_offset = eh->plt_got.offset;
0ff2b86e
L		 3047 }
3048
3049 relocation = (resolved_plt->output_section->vma
3050 + resolved_plt->output_offset
3051 + plt_offset);
b34976b6 3052 unresolved_reloc = FALSE;
70256ad8
AJ		 3053 break;
3054
1788fc08
L		 3055 case R_X86_64_SIZE32:
3056 case R_X86_64_SIZE64:
1788fc08
L		 3057 /* Set to symbol size. */
3058 relocation = st_size;
3059 goto direct;
3060
fd8ab9e5
AJ		 3061 case R_X86_64_PC8:
3062 case R_X86_64_PC16:
3063 case R_X86_64_PC32:
c3320543 3064 case R_X86_64_PC32_BND:
6333bc0d 3065 /* Don't complain about -fPIC if the symbol is undefined when
bd7ab16b
L		 3066 building executable unless it is unresolved weak symbol,
3067 references a dynamic definition in PIE or -z nocopyreloc
3068 is used. */
07d6d2b8 3069 if ((input_section->flags & SEC_ALLOC) != 0
90f487df 3070 && (input_section->flags & SEC_READONLY) != 0
6333bc0d 3071 && h != NULL
aec6b87e 3072 && ((bfd_link_executable (info)
7073b5b9
L		 3073 && ((h->root.type == bfd_link_hash_undefweak
3074 && !resolved_to_zero)
bd7ab16b
L		 3075 || (bfd_link_pie (info)
3076 && !h->def_regular
3077 && h->def_dynamic)
a5b4ee94
L		 3078 || ((info->nocopyreloc
3079 || (eh->def_protected
3080 && elf_has_no_copy_on_protected (h->root.u.def.section->owner)))
7073b5b9
L		 3081 && h->def_dynamic
3082 && !(h->root.u.def.section->flags & SEC_CODE))))
c5bb8910 3083 || bfd_link_dll (info)))
6610a52d 3084 {
41bed6dd 3085 bfd_boolean fail = FALSE;
6999821f 3086 if (SYMBOL_REFERENCES_LOCAL_P (info, h))
41bed6dd
L		 3087 {
3088 /* Symbol is referenced locally. Make sure it is
bd7ab16b
L		 3089 defined locally. */
3090 fail = !(h->def_regular || ELF_COMMON_DEF_P (h));
41bed6dd 3091 }
aec6b87e 3092 else if (!(bfd_link_pie (info)
bc696fd5 3093 && (h->needs_copy || eh->needs_copy)))
41bed6dd 3094 {
9a926d55 3095 /* Symbol doesn't need copy reloc and isn't referenced
bd7ab16b
L		 3096 locally. Address of protected function may not be
3097 reachable at run-time. */
3098 fail = (ELF_ST_VISIBILITY (h->other) == STV_DEFAULT
3099 || (ELF_ST_VISIBILITY (h->other) == STV_PROTECTED
3100 && h->type == STT_FUNC));
41bed6dd
L		 3101 }
3102
3103 if (fail)
aab921ad 3104 return elf_x86_64_need_pic (info, input_bfd, input_section,
338c190a 3105 h, NULL, NULL, howto);
6610a52d 3106 }
451875b4
L		 3107 /* Since x86-64 has PC-relative PLT, we can use PLT in PIE
3108 as function address. */
3109 else if (h != NULL
3110 && (input_section->flags & SEC_CODE) == 0
3111 && bfd_link_pie (info)
3112 && h->type == STT_FUNC
3113 && !h->def_regular
3114 && h->def_dynamic)
3115 goto use_plt;
6610a52d
L		 3116 /* Fall through. */
3117
70256ad8
AJ		 3118 case R_X86_64_8:
3119 case R_X86_64_16:
3120 case R_X86_64_32:
d6ab8113 3121 case R_X86_64_PC64:
6b3db546 3122 case R_X86_64_64:
80643fbc 3123 /* FIXME: The ABI says the linker should make sure the value is
407443a3 3124 the same when it's zeroextended to 64 bit. */
c434dee6 3125
1788fc08 3126direct:
b1e24c02 3127 if ((input_section->flags & SEC_ALLOC) == 0)
c434dee6
AJ		 3128 break;
3129
aebcc8ff
L		 3130 need_copy_reloc_in_pie = (bfd_link_pie (info)
3131 && h != NULL
3132 && (h->needs_copy
3133 || eh->needs_copy
3134 || (h->root.type
3135 == bfd_link_hash_undefined))
3136 && (X86_PCREL_TYPE_P (r_type)
3137 || X86_SIZE_TYPE_P (r_type)));
3138
3139 if (GENERATE_DYNAMIC_RELOCATION_P (info, eh, r_type,
3140 need_copy_reloc_in_pie,
3141 resolved_to_zero, FALSE))
70256ad8
AJ		 3142 {
3143 Elf_Internal_Rela outrel;
b34976b6 3144 bfd_boolean skip, relocate;
c434dee6 3145 asection *sreloc;
70256ad8
AJ		 3146
3147 /* When generating a shared object, these relocations
3148 are copied into the output file to be resolved at run
407443a3 3149 time. */
b34976b6
AM		 3150 skip = FALSE;
3151 relocate = FALSE;
70256ad8 3152
c629eae0
JJ		 3153 outrel.r_offset =
3154 _bfd_elf_section_offset (output_bfd, info, input_section,
c434dee6 3155 rel->r_offset);
c629eae0 3156 if (outrel.r_offset == (bfd_vma) -1)
b34976b6 3157 skip = TRUE;
0fb19cbc 3158 else if (outrel.r_offset == (bfd_vma) -2)
b34976b6 3159 skip = TRUE, relocate = TRUE;
70256ad8
AJ		 3160
3161 outrel.r_offset += (input_section->output_section->vma
3162 + input_section->output_offset);
3163
3164 if (skip)
0bb2d96a 3165 memset (&outrel, 0, sizeof outrel);
c434dee6 3166
e74399c4 3167 else if (COPY_INPUT_RELOC_P (info, h, r_type))
70256ad8 3168 {
351f65ca 3169 outrel.r_info = htab->r_info (h->dynindx, r_type);
c434dee6 3170 outrel.r_addend = rel->r_addend;
70256ad8
AJ		 3171 }
3172 else
3173 {
4c10bbaa
L		 3174 /* This symbol is local, or marked to become local.
3175 When relocation overflow check is disabled, we
3176 convert R_X86_64_32 to dynamic R_X86_64_RELATIVE. */
3177 if (r_type == htab->pointer_r_type
3178 || (r_type == R_X86_64_32
3179 && info->no_reloc_overflow_check))
607c0e09 3180 {
b34976b6 3181 relocate = TRUE;
351f65ca 3182 outrel.r_info = htab->r_info (0, R_X86_64_RELATIVE);
607c0e09
AS		 3183 outrel.r_addend = relocation + rel->r_addend;
3184 }
64d25c44
L		 3185 else if (r_type == R_X86_64_64
3186 && !ABI_64_P (output_bfd))
3187 {
3188 relocate = TRUE;
3189 outrel.r_info = htab->r_info (0,
3190 R_X86_64_RELATIVE64);
3191 outrel.r_addend = relocation + rel->r_addend;
8cf0d2dd
L		 3192 /* Check addend overflow. */
3193 if ((outrel.r_addend & 0x80000000)
3194 != (rel->r_addend & 0x80000000))
3195 {
3196 const char *name;
268a8d3a 3197 int addend = rel->r_addend;
8cf0d2dd
L		 3198 if (h && h->root.root.string)
3199 name = h->root.root.string;
3200 else
3201 name = bfd_elf_sym_name (input_bfd, symtab_hdr,
3202 sym, NULL);
d42c267e
AM		 3203 _bfd_error_handler
3204 /* xgettext:c-format */
871b3ab2 3205 (_("%pB: addend %s%#x in relocation %s against "
2dcf00ce
AM		 3206 "symbol `%s' at %#" PRIx64
3207 " in section `%pA' is out of range"),
d42c267e 3208 input_bfd, addend < 0 ? "-" : "", addend,
2dcf00ce
AM		 3209 howto->name, name, (uint64_t) rel->r_offset,
3210 input_section);
8cf0d2dd
L		 3211 bfd_set_error (bfd_error_bad_value);
3212 return FALSE;
3213 }
64d25c44 3214 }
607c0e09
AS		 3215 else
3216 {
3217 long sindx;
3218
8517fae7 3219 if (bfd_is_abs_section (sec))
607c0e09
AS		 3220 sindx = 0;
3221 else if (sec == NULL || sec->owner == NULL)
3222 {
3223 bfd_set_error (bfd_error_bad_value);
b34976b6 3224 return FALSE;
607c0e09
AS		 3225 }
3226 else
3227 {
3228 asection *osec;
3229
74541ad4
AM		 3230 /* We are turning this relocation into one
3231 against a section symbol. It would be
3232 proper to subtract the symbol's value,
3233 osec->vma, from the emitted reloc addend,
3234 but ld.so expects buggy relocs. */
607c0e09
AS		 3235 osec = sec->output_section;
3236 sindx = elf_section_data (osec)->dynindx;
74541ad4
AM		 3237 if (sindx == 0)
3238 {
3239 asection *oi = htab->elf.text_index_section;
3240 sindx = elf_section_data (oi)->dynindx;
3241 }
3242 BFD_ASSERT (sindx != 0);
607c0e09
AS		 3243 }
3244
351f65ca 3245 outrel.r_info = htab->r_info (sindx, r_type);
607c0e09
AS		 3246 outrel.r_addend = relocation + rel->r_addend;
3247 }
70256ad8
AJ		 3248 }
3249
cbe950e9 3250 sreloc = elf_section_data (input_section)->sreloc;
d8045f23 3251
62d78908
L		 3252 if (sreloc == NULL || sreloc->contents == NULL)
3253 {
3254 r = bfd_reloc_notsupported;
3255 goto check_relocation_error;
3256 }
c434dee6 3257
351f65ca 3258 elf_append_rela (output_bfd, sreloc, &outrel);
70256ad8
AJ		 3259
3260 /* If this reloc is against an external symbol, we do
3261 not want to fiddle with the addend. Otherwise, we
3262 need to include the symbol value so that it becomes
3263 an addend for the dynamic reloc. */
0f88be7a 3264 if (! relocate)
70256ad8
AJ		 3265 continue;
3266 }
3267
3268 break;
3269
bffbf940 3270 case R_X86_64_TLSGD:
67a4f2b7
AO		 3271 case R_X86_64_GOTPC32_TLSDESC:
3272 case R_X86_64_TLSDESC_CALL:
bffbf940 3273 case R_X86_64_GOTTPOFF:
bffbf940
JJ		 3274 tls_type = GOT_UNKNOWN;
3275 if (h == NULL && local_got_offsets)
0afcef53 3276 tls_type = elf_x86_local_got_tls_type (input_bfd) [r_symndx];
bffbf940 3277 else if (h != NULL)
0afcef53 3278 tls_type = elf_x86_hash_entry (h)->tls_type;
142411ca 3279
419414ea 3280 r_type_tls = r_type;
351f65ca
L		 3281 if (! elf_x86_64_tls_transition (info, input_bfd,
3282 input_section, contents,
3283 symtab_hdr, sym_hashes,
419414ea 3284 &r_type_tls, tls_type, rel,
bedfd056 3285 relend, h, r_symndx, TRUE))
534a31f6 3286 return FALSE;
bffbf940 3287
419414ea 3288 if (r_type_tls == R_X86_64_TPOFF32)
bffbf940 3289 {
142411ca
L		 3290 bfd_vma roff = rel->r_offset;
3291
bffbf940 3292 BFD_ASSERT (! unresolved_reloc);
142411ca 3293
419414ea 3294 if (r_type == R_X86_64_TLSGD)
bffbf940 3295 {
52bc799a 3296 /* GD->LE transition. For 64bit, change
e2cbcd91
L		 3297 .byte 0x66; leaq foo@tlsgd(%rip), %rdi
3298 .word 0x6666; rex64; call __tls_get_addr@PLT
3299 or
3300 .byte 0x66; leaq foo@tlsgd(%rip), %rdi
3301 .byte 0x66; rex64
3302 call *__tls_get_addr@GOTPCREL(%rip)
3303 which may be converted to
3304 addr32 call __tls_get_addr
52bc799a 3305 into:
e2cbcd91
L		 3306 movq %fs:0, %rax
3307 leaq foo@tpoff(%rax), %rax
52bc799a 3308 For 32bit, change
e2cbcd91
L		 3309 leaq foo@tlsgd(%rip), %rdi
3310 .word 0x6666; rex64; call __tls_get_addr@PLT
3311 or
3312 leaq foo@tlsgd(%rip), %rdi
3313 .byte 0x66; rex64
3314 call *__tls_get_addr@GOTPCREL(%rip)
3315 which may be converted to
3316 addr32 call __tls_get_addr
52bc799a 3317 into:
e2cbcd91
L		 3318 movl %fs:0, %eax
3319 leaq foo@tpoff(%rax), %rax
5c98a14e 3320 For largepic, change:
e2cbcd91
L		 3321 leaq foo@tlsgd(%rip), %rdi
3322 movabsq $__tls_get_addr@pltoff, %rax
3323 addq %r15, %rax
3324 call *%rax
5c98a14e 3325 into:
e2cbcd91
L		 3326 movq %fs:0, %rax
3327 leaq foo@tpoff(%rax), %rax
3328 nopw 0x0(%rax,%rax,1) */
5c98a14e 3329 int largepic = 0;
e2cbcd91 3330 if (ABI_64_P (output_bfd))
5c98a14e 3331 {
e2cbcd91
L		 3332 if (contents[roff + 5] == 0xb8)
3333 {
3334 memcpy (contents + roff - 3,
3335 "\x64\x48\x8b\x04\x25\0\0\0\0\x48\x8d\x80"
3336 "\0\0\0\0\x66\x0f\x1f\x44\0", 22);
3337 largepic = 1;
3338 }
3339 else
3340 memcpy (contents + roff - 4,
3341 "\x64\x48\x8b\x04\x25\0\0\0\0\x48\x8d\x80\0\0\0",
3342 16);
5c98a14e 3343 }
52bc799a
L		 3344 else
3345 memcpy (contents + roff - 3,
3346 "\x64\x8b\x04\x25\0\0\0\0\x48\x8d\x80\0\0\0",
3347 15);
eb4ff4d6 3348 bfd_put_32 (output_bfd,
351f65ca 3349 elf_x86_64_tpoff (info, relocation),
5c98a14e 3350 contents + roff + 8 + largepic);
e2cbcd91
L		 3351 /* Skip R_X86_64_PC32, R_X86_64_PLT32,
3352 R_X86_64_GOTPCRELX and R_X86_64_PLTOFF64. */
bffbf940 3353 rel++;
60f2e42e 3354 wrel++;
bffbf940
JJ		 3355 continue;
3356 }
419414ea 3357 else if (r_type == R_X86_64_GOTPC32_TLSDESC)
67a4f2b7
AO		 3358 {
3359 /* GDesc -> LE transition.
3360 It's originally something like:
3361 leaq x@tlsdesc(%rip), %rax
3362
3363 Change it to:
c9736ba0 3364 movl $x@tpoff, %rax. */
67a4f2b7 3365
c9736ba0 3366 unsigned int val, type;
67a4f2b7 3367
67a4f2b7 3368 type = bfd_get_8 (input_bfd, contents + roff - 3);
67a4f2b7 3369 val = bfd_get_8 (input_bfd, contents + roff - 1);
67a4f2b7
AO		 3370 bfd_put_8 (output_bfd, 0x48 | ((type >> 2) & 1),
3371 contents + roff - 3);
3372 bfd_put_8 (output_bfd, 0xc7, contents + roff - 2);
3373 bfd_put_8 (output_bfd, 0xc0 | ((val >> 3) & 7),
3374 contents + roff - 1);
eb4ff4d6 3375 bfd_put_32 (output_bfd,
351f65ca 3376 elf_x86_64_tpoff (info, relocation),
67a4f2b7
AO		 3377 contents + roff);
3378 continue;
3379 }
419414ea 3380 else if (r_type == R_X86_64_TLSDESC_CALL)
67a4f2b7
AO		 3381 {
3382 /* GDesc -> LE transition.
3383 It's originally:
3384 call *(%rax)
3385 Turn it into:
142411ca 3386 xchg %ax,%ax. */
10efb593 3387 bfd_put_8 (output_bfd, 0x66, contents + roff);
67a4f2b7
AO		 3388 bfd_put_8 (output_bfd, 0x90, contents + roff + 1);
3389 continue;
3390 }
419414ea 3391 else if (r_type == R_X86_64_GOTTPOFF)
bffbf940 3392 {
bffbf940 3393 /* IE->LE transition:
cf61b747 3394 For 64bit, originally it can be one of:
bffbf940
JJ		 3395 movq foo@gottpoff(%rip), %reg
3396 addq foo@gottpoff(%rip), %reg
3397 We change it into:
3398 movq $foo, %reg
3399 leaq foo(%reg), %reg
cf61b747
L		 3400 addq $foo, %reg.
3401 For 32bit, originally it can be one of:
3402 movq foo@gottpoff(%rip), %reg
3403 addl foo@gottpoff(%rip), %reg
3404 We change it into:
3405 movq $foo, %reg
3406 leal foo(%reg), %reg
3407 addl $foo, %reg. */
142411ca
L		 3408
3409 unsigned int val, type, reg;
3410
cf61b747
L		 3411 if (roff >= 3)
3412 val = bfd_get_8 (input_bfd, contents + roff - 3);
3413 else
3414 val = 0;
142411ca
L		 3415 type = bfd_get_8 (input_bfd, contents + roff - 2);
3416 reg = bfd_get_8 (input_bfd, contents + roff - 1);
bffbf940 3417 reg >>= 3;
bffbf940
JJ		 3418 if (type == 0x8b)
3419 {
3420 /* movq */
3421 if (val == 0x4c)
3422 bfd_put_8 (output_bfd, 0x49,
142411ca 3423 contents + roff - 3);
4a4c5f25
L		 3424 else if (!ABI_64_P (output_bfd) && val == 0x44)
3425 bfd_put_8 (output_bfd, 0x41,
3426 contents + roff - 3);
bffbf940 3427 bfd_put_8 (output_bfd, 0xc7,
142411ca 3428 contents + roff - 2);
bffbf940 3429 bfd_put_8 (output_bfd, 0xc0 | reg,
142411ca 3430 contents + roff - 1);
bffbf940
JJ		 3431 }
3432 else if (reg == 4)
3433 {
cf61b747
L		 3434 /* addq/addl -> addq/addl - addressing with %rsp/%r12
3435 is special */
bffbf940
JJ		 3436 if (val == 0x4c)
3437 bfd_put_8 (output_bfd, 0x49,
142411ca 3438 contents + roff - 3);
4a4c5f25
L		 3439 else if (!ABI_64_P (output_bfd) && val == 0x44)
3440 bfd_put_8 (output_bfd, 0x41,
3441 contents + roff - 3);
bffbf940 3442 bfd_put_8 (output_bfd, 0x81,
142411ca 3443 contents + roff - 2);
bffbf940 3444 bfd_put_8 (output_bfd, 0xc0 | reg,
142411ca 3445 contents + roff - 1);
bffbf940
JJ		 3446 }
3447 else
3448 {
cf61b747 3449 /* addq/addl -> leaq/leal */
bffbf940
JJ		 3450 if (val == 0x4c)
3451 bfd_put_8 (output_bfd, 0x4d,
142411ca 3452 contents + roff - 3);
4a4c5f25
L		 3453 else if (!ABI_64_P (output_bfd) && val == 0x44)
3454 bfd_put_8 (output_bfd, 0x45,
3455 contents + roff - 3);
bffbf940 3456 bfd_put_8 (output_bfd, 0x8d,
142411ca 3457 contents + roff - 2);
bffbf940 3458 bfd_put_8 (output_bfd, 0x80 | reg | (reg << 3),
142411ca 3459 contents + roff - 1);
bffbf940 3460 }
eb4ff4d6 3461 bfd_put_32 (output_bfd,
351f65ca 3462 elf_x86_64_tpoff (info, relocation),
142411ca 3463 contents + roff);
bffbf940
JJ		 3464 continue;
3465 }
142411ca
L		 3466 else
3467 BFD_ASSERT (FALSE);
bffbf940
JJ		 3468 }
3469
6de2ae4a 3470 if (htab->elf.sgot == NULL)
bffbf940
JJ		 3471 abort ();
3472
3473 if (h != NULL)
67a4f2b7
AO		 3474 {
3475 off = h->got.offset;
0afcef53 3476 offplt = elf_x86_hash_entry (h)->tlsdesc_got;
67a4f2b7 3477 }
bffbf940
JJ		 3478 else
3479 {
3480 if (local_got_offsets == NULL)
3481 abort ();
3482
3483 off = local_got_offsets[r_symndx];
67a4f2b7 3484 offplt = local_tlsdesc_gotents[r_symndx];
bffbf940
JJ		 3485 }
3486
3487 if ((off & 1) != 0)
3488 off &= ~1;
26e41594 3489 else
bffbf940
JJ		 3490 {
3491 Elf_Internal_Rela outrel;
bffbf940 3492 int dr_type, indx;
67a4f2b7 3493 asection *sreloc;
bffbf940 3494
6de2ae4a 3495 if (htab->elf.srelgot == NULL)
bffbf940
JJ		 3496 abort ();
3497
67a4f2b7
AO		 3498 indx = h && h->dynindx != -1 ? h->dynindx : 0;
3499
3500 if (GOT_TLS_GDESC_P (tls_type))
3501 {
351f65ca 3502 outrel.r_info = htab->r_info (indx, R_X86_64_TLSDESC);
67a4f2b7 3503 BFD_ASSERT (htab->sgotplt_jump_table_size + offplt
6de2ae4a
L		 3504 + 2 * GOT_ENTRY_SIZE <= htab->elf.sgotplt->size);
3505 outrel.r_offset = (htab->elf.sgotplt->output_section->vma
3506 + htab->elf.sgotplt->output_offset
67a4f2b7
AO		 3507 + offplt
3508 + htab->sgotplt_jump_table_size);
6de2ae4a 3509 sreloc = htab->elf.srelplt;
67a4f2b7 3510 if (indx == 0)
0afcef53 3511 outrel.r_addend = relocation - _bfd_x86_elf_dtpoff_base (info);
67a4f2b7
AO		 3512 else
3513 outrel.r_addend = 0;
351f65ca 3514 elf_append_rela (output_bfd, sreloc, &outrel);
67a4f2b7
AO		 3515 }
3516
6de2ae4a 3517 sreloc = htab->elf.srelgot;
67a4f2b7 3518
6de2ae4a
L		 3519 outrel.r_offset = (htab->elf.sgot->output_section->vma
3520 + htab->elf.sgot->output_offset + off);
bffbf940 3521
67a4f2b7 3522 if (GOT_TLS_GD_P (tls_type))
bffbf940 3523 dr_type = R_X86_64_DTPMOD64;
67a4f2b7
AO		 3524 else if (GOT_TLS_GDESC_P (tls_type))
3525 goto dr_done;
bffbf940
JJ		 3526 else
3527 dr_type = R_X86_64_TPOFF64;
3528
6de2ae4a 3529 bfd_put_64 (output_bfd, 0, htab->elf.sgot->contents + off);
bffbf940 3530 outrel.r_addend = 0;
67a4f2b7
AO		 3531 if ((dr_type == R_X86_64_TPOFF64
3532 || dr_type == R_X86_64_TLSDESC) && indx == 0)
0afcef53 3533 outrel.r_addend = relocation - _bfd_x86_elf_dtpoff_base (info);
351f65ca 3534 outrel.r_info = htab->r_info (indx, dr_type);
bffbf940 3535
351f65ca 3536 elf_append_rela (output_bfd, sreloc, &outrel);
bffbf940 3537
67a4f2b7 3538 if (GOT_TLS_GD_P (tls_type))
bffbf940
JJ		 3539 {
3540 if (indx == 0)
3541 {
d40d037c 3542 BFD_ASSERT (! unresolved_reloc);
bffbf940 3543 bfd_put_64 (output_bfd,
0afcef53 3544 relocation - _bfd_x86_elf_dtpoff_base (info),
6de2ae4a 3545 htab->elf.sgot->contents + off + GOT_ENTRY_SIZE);
bffbf940
JJ		 3546 }
3547 else
3548 {
3549 bfd_put_64 (output_bfd, 0,
6de2ae4a 3550 htab->elf.sgot->contents + off + GOT_ENTRY_SIZE);
351f65ca 3551 outrel.r_info = htab->r_info (indx,
bffbf940
JJ		 3552 R_X86_64_DTPOFF64);
3553 outrel.r_offset += GOT_ENTRY_SIZE;
351f65ca 3554 elf_append_rela (output_bfd, sreloc,
464d3bd4 3555 &outrel);
bffbf940
JJ		 3556 }
3557 }
3558
67a4f2b7 3559 dr_done:
bffbf940
JJ		 3560 if (h != NULL)
3561 h->got.offset |= 1;
3562 else
3563 local_got_offsets[r_symndx] |= 1;
3564 }
3565
67a4f2b7
AO		 3566 if (off >= (bfd_vma) -2
3567 && ! GOT_TLS_GDESC_P (tls_type))
bffbf940 3568 abort ();
419414ea 3569 if (r_type_tls == r_type)
bffbf940 3570 {
67a4f2b7
AO		 3571 if (r_type == R_X86_64_GOTPC32_TLSDESC
3572 || r_type == R_X86_64_TLSDESC_CALL)
6de2ae4a
L		 3573 relocation = htab->elf.sgotplt->output_section->vma
3574 + htab->elf.sgotplt->output_offset
67a4f2b7
AO		 3575 + offplt + htab->sgotplt_jump_table_size;
3576 else
6de2ae4a
L		 3577 relocation = htab->elf.sgot->output_section->vma
3578 + htab->elf.sgot->output_offset + off;
b34976b6 3579 unresolved_reloc = FALSE;
bffbf940 3580 }
142411ca 3581 else
67a4f2b7 3582 {
142411ca 3583 bfd_vma roff = rel->r_offset;
67a4f2b7 3584
419414ea 3585 if (r_type == R_X86_64_TLSGD)
142411ca 3586 {
52bc799a 3587 /* GD->IE transition. For 64bit, change
e2cbcd91
L		 3588 .byte 0x66; leaq foo@tlsgd(%rip), %rdi
3589 .word 0x6666; rex64; call __tls_get_addr@PLT
3590 or
3591 .byte 0x66; leaq foo@tlsgd(%rip), %rdi
3592 .byte 0x66; rex64
3593 call *__tls_get_addr@GOTPCREL(%rip
3594 which may be converted to
3595 addr32 call __tls_get_addr
52bc799a 3596 into:
e2cbcd91
L		 3597 movq %fs:0, %rax
3598 addq foo@gottpoff(%rip), %rax
52bc799a 3599 For 32bit, change
e2cbcd91
L		 3600 leaq foo@tlsgd(%rip), %rdi
3601 .word 0x6666; rex64; call __tls_get_addr@PLT
3602 or
3603 leaq foo@tlsgd(%rip), %rdi
3604 .byte 0x66; rex64;
3605 call *__tls_get_addr@GOTPCREL(%rip)
3606 which may be converted to
3607 addr32 call __tls_get_addr
52bc799a 3608 into:
e2cbcd91
L		 3609 movl %fs:0, %eax
3610 addq foo@gottpoff(%rip), %rax
5c98a14e 3611 For largepic, change:
e2cbcd91
L		 3612 leaq foo@tlsgd(%rip), %rdi
3613 movabsq $__tls_get_addr@pltoff, %rax
3614 addq %r15, %rax
3615 call *%rax
5c98a14e 3616 into:
e2cbcd91
L		 3617 movq %fs:0, %rax
3618 addq foo@gottpoff(%rax), %rax
3619 nopw 0x0(%rax,%rax,1) */
5c98a14e 3620 int largepic = 0;
e2cbcd91 3621 if (ABI_64_P (output_bfd))
5c98a14e 3622 {
e2cbcd91
L		 3623 if (contents[roff + 5] == 0xb8)
3624 {
3625 memcpy (contents + roff - 3,
3626 "\x64\x48\x8b\x04\x25\0\0\0\0\x48\x03\x05"
3627 "\0\0\0\0\x66\x0f\x1f\x44\0", 22);
3628 largepic = 1;
3629 }
3630 else
3631 memcpy (contents + roff - 4,
3632 "\x64\x48\x8b\x04\x25\0\0\0\0\x48\x03\x05\0\0\0",
3633 16);
5c98a14e 3634 }
52bc799a
L		 3635 else
3636 memcpy (contents + roff - 3,
3637 "\x64\x8b\x04\x25\0\0\0\0\x48\x03\x05\0\0\0",
3638 15);
142411ca 3639
6de2ae4a
L		 3640 relocation = (htab->elf.sgot->output_section->vma
3641 + htab->elf.sgot->output_offset + off
142411ca 3642 - roff
5c98a14e 3643 - largepic
142411ca
L		 3644 - input_section->output_section->vma
3645 - input_section->output_offset
3646 - 12);
3647 bfd_put_32 (output_bfd, relocation,
5c98a14e
JJ		 3648 contents + roff + 8 + largepic);
3649 /* Skip R_X86_64_PLT32/R_X86_64_PLTOFF64. */
142411ca 3650 rel++;
60f2e42e 3651 wrel++;
142411ca
L		 3652 continue;
3653 }
419414ea 3654 else if (r_type == R_X86_64_GOTPC32_TLSDESC)
142411ca
L		 3655 {
3656 /* GDesc -> IE transition.
3657 It's originally something like:
3658 leaq x@tlsdesc(%rip), %rax
67a4f2b7 3659
142411ca 3660 Change it to:
c9736ba0 3661 movq x@gottpoff(%rip), %rax # before xchg %ax,%ax. */
67a4f2b7 3662
142411ca
L		 3663 /* Now modify the instruction as appropriate. To
3664 turn a leaq into a movq in the form we use it, it
3665 suffices to change the second byte from 0x8d to
3666 0x8b. */
3667 bfd_put_8 (output_bfd, 0x8b, contents + roff - 2);
3668
3669 bfd_put_32 (output_bfd,
6de2ae4a
L		 3670 htab->elf.sgot->output_section->vma
3671 + htab->elf.sgot->output_offset + off
142411ca
L		 3672 - rel->r_offset
3673 - input_section->output_section->vma
3674 - input_section->output_offset
3675 - 4,
3676 contents + roff);
3677 continue;
3678 }
419414ea 3679 else if (r_type == R_X86_64_TLSDESC_CALL)
142411ca
L		 3680 {
3681 /* GDesc -> IE transition.
3682 It's originally:
3683 call *(%rax)
3684
3685 Change it to:
c9736ba0 3686 xchg %ax, %ax. */
142411ca 3687
142411ca
L		 3688 bfd_put_8 (output_bfd, 0x66, contents + roff);
3689 bfd_put_8 (output_bfd, 0x90, contents + roff + 1);
3690 continue;
3691 }
3692 else
3693 BFD_ASSERT (FALSE);
67a4f2b7 3694 }
bffbf940
JJ		 3695 break;
3696
3697 case R_X86_64_TLSLD:
351f65ca
L		 3698 if (! elf_x86_64_tls_transition (info, input_bfd,
3699 input_section, contents,
3700 symtab_hdr, sym_hashes,
bedfd056
L		 3701 &r_type, GOT_UNKNOWN, rel,
3702 relend, h, r_symndx, TRUE))
142411ca 3703 return FALSE;
a3fadc9a 3704
142411ca
L		 3705 if (r_type != R_X86_64_TLSLD)
3706 {
bffbf940 3707 /* LD->LE transition:
e2cbcd91
L		 3708 leaq foo@tlsld(%rip), %rdi
3709 call __tls_get_addr@PLT
3710 For 64bit, we change it into:
3711 .word 0x6666; .byte 0x66; movq %fs:0, %rax
3712 For 32bit, we change it into:
3713 nopl 0x0(%rax); movl %fs:0, %eax
3714 Or
3715 leaq foo@tlsld(%rip), %rdi;
3716 call *__tls_get_addr@GOTPCREL(%rip)
3717 which may be converted to
3718 addr32 call __tls_get_addr
52bc799a 3719 For 64bit, we change it into:
e2cbcd91 3720 .word 0x6666; .word 0x6666; movq %fs:0, %rax
52bc799a 3721 For 32bit, we change it into:
e2cbcd91 3722 nopw 0x0(%rax); movl %fs:0, %eax
5c98a14e 3723 For largepic, change:
e2cbcd91
L		 3724 leaq foo@tlsgd(%rip), %rdi
3725 movabsq $__tls_get_addr@pltoff, %rax
3726 addq %rbx, %rax
3727 call *%rax
3728 into
3729 data16 data16 data16 nopw %cs:0x0(%rax,%rax,1)
3730 movq %fs:0, %eax */
142411ca
L		 3731
3732 BFD_ASSERT (r_type == R_X86_64_TPOFF32);
e2cbcd91
L		 3733 if (ABI_64_P (output_bfd))
3734 {
3735 if (contents[rel->r_offset + 5] == 0xb8)
3736 memcpy (contents + rel->r_offset - 3,
3737 "\x66\x66\x66\x66\x2e\x0f\x1f\x84\0\0\0\0\0"
3738 "\x64\x48\x8b\x04\x25\0\0\0", 22);
3739 else if (contents[rel->r_offset + 4] == 0xff
3740 || contents[rel->r_offset + 4] == 0x67)
3741 memcpy (contents + rel->r_offset - 3,
3742 "\x66\x66\x66\x66\x64\x48\x8b\x04\x25\0\0\0",
3743 13);
3744 else
3745 memcpy (contents + rel->r_offset - 3,
3746 "\x66\x66\x66\x64\x48\x8b\x04\x25\0\0\0", 12);
3747 }
52bc799a 3748 else
e2cbcd91
L		 3749 {
3750 if (contents[rel->r_offset + 4] == 0xff)
3751 memcpy (contents + rel->r_offset - 3,
3752 "\x66\x0f\x1f\x40\x00\x64\x8b\x04\x25\0\0\0",
3753 13);
3754 else
3755 memcpy (contents + rel->r_offset - 3,
3756 "\x0f\x1f\x40\x00\x64\x8b\x04\x25\0\0\0", 12);
3757 }
3758 /* Skip R_X86_64_PC32, R_X86_64_PLT32, R_X86_64_GOTPCRELX
3759 and R_X86_64_PLTOFF64. */
bffbf940 3760 rel++;
60f2e42e 3761 wrel++;
bffbf940
JJ		 3762 continue;
3763 }
3764
6de2ae4a 3765 if (htab->elf.sgot == NULL)
bffbf940
JJ		 3766 abort ();
3767
0afcef53 3768 off = htab->tls_ld_or_ldm_got.offset;
bffbf940
JJ		 3769 if (off & 1)
3770 off &= ~1;
3771 else
3772 {
3773 Elf_Internal_Rela outrel;
bffbf940 3774
6de2ae4a 3775 if (htab->elf.srelgot == NULL)
bffbf940
JJ		 3776 abort ();
3777
6de2ae4a
L		 3778 outrel.r_offset = (htab->elf.sgot->output_section->vma
3779 + htab->elf.sgot->output_offset + off);
bffbf940
JJ		 3780
3781 bfd_put_64 (output_bfd, 0,
6de2ae4a 3782 htab->elf.sgot->contents + off);
bffbf940 3783 bfd_put_64 (output_bfd, 0,
6de2ae4a 3784 htab->elf.sgot->contents + off + GOT_ENTRY_SIZE);
351f65ca 3785 outrel.r_info = htab->r_info (0, R_X86_64_DTPMOD64);
bffbf940 3786 outrel.r_addend = 0;
351f65ca 3787 elf_append_rela (output_bfd, htab->elf.srelgot,
464d3bd4 3788 &outrel);
0afcef53 3789 htab->tls_ld_or_ldm_got.offset |= 1;
bffbf940 3790 }
6de2ae4a
L		 3791 relocation = htab->elf.sgot->output_section->vma
3792 + htab->elf.sgot->output_offset + off;
b34976b6 3793 unresolved_reloc = FALSE;
bffbf940
JJ		 3794 break;
3795
3796 case R_X86_64_DTPOFF32:
0e1862bb
L		 3797 if (!bfd_link_executable (info)
3798 || (input_section->flags & SEC_CODE) == 0)
0afcef53 3799 relocation -= _bfd_x86_elf_dtpoff_base (info);
bffbf940 3800 else
351f65ca 3801 relocation = elf_x86_64_tpoff (info, relocation);
bffbf940
JJ		 3802 break;
3803
3804 case R_X86_64_TPOFF32:
6769d501 3805 case R_X86_64_TPOFF64:
0e1862bb 3806 BFD_ASSERT (bfd_link_executable (info));
351f65ca 3807 relocation = elf_x86_64_tpoff (info, relocation);
bffbf940
JJ		 3808 break;
3809
a69ed7f7
L		 3810 case R_X86_64_DTPOFF64:
3811 BFD_ASSERT ((input_section->flags & SEC_CODE) == 0);
0afcef53 3812 relocation -= _bfd_x86_elf_dtpoff_base (info);
a69ed7f7
L		 3813 break;
3814
70256ad8
AJ		 3815 default:
3816 break;
3817 }
8d88c4ca 3818
239e1f3a
AM		 3819 /* Dynamic relocs are not propagated for SEC_DEBUGGING sections
3820 because such sections are not SEC_ALLOC and thus ld.so will
3821 not process them. */
c434dee6 3822 if (unresolved_reloc
239e1f3a 3823 && !((input_section->flags & SEC_DEBUGGING) != 0
1d5316ab
AM		 3824 && h->def_dynamic)
3825 && _bfd_elf_section_offset (output_bfd, info, input_section,
3826 rel->r_offset) != (bfd_vma) -1)
a040981f 3827 {
7073b5b9
L		 3828 switch (r_type)
3829 {
3830 case R_X86_64_32S:
a5b4ee94
L		 3831 sec = h->root.u.def.section;
3832 if ((info->nocopyreloc
3833 || (eh->def_protected
3834 && elf_has_no_copy_on_protected (h->root.u.def.section->owner)))
7073b5b9
L		 3835 && !(h->root.u.def.section->flags & SEC_CODE))
3836 return elf_x86_64_need_pic (info, input_bfd, input_section,
3837 h, NULL, NULL, howto);
3838 /* Fall through. */
3839
3840 default:
3841 _bfd_error_handler
3842 /* xgettext:c-format */
2dcf00ce
AM		 3843 (_("%pB(%pA+%#" PRIx64 "): "
3844 "unresolvable %s relocation against symbol `%s'"),
7073b5b9
L		 3845 input_bfd,
3846 input_section,
2dcf00ce 3847 (uint64_t) rel->r_offset,
7073b5b9
L		 3848 howto->name,
3849 h->root.root.string);
3850 return FALSE;
3851 }
a040981f 3852 }
c434dee6 3853
cbe950e9 3854do_relocation:
8d88c4ca 3855 r = _bfd_final_link_relocate (howto, input_bfd, input_section,
c434dee6
AJ		 3856 contents, rel->r_offset,
3857 relocation, rel->r_addend);
8d88c4ca 3858
62d78908 3859check_relocation_error:
8d88c4ca 3860 if (r != bfd_reloc_ok)
8da6118f 3861 {
c434dee6
AJ		 3862 const char *name;
3863
3864 if (h != NULL)
3865 name = h->root.root.string;
3866 else
8da6118f 3867 {
c434dee6
AJ		 3868 name = bfd_elf_string_from_elf_section (input_bfd,
3869 symtab_hdr->sh_link,
3870 sym->st_name);
3871 if (name == NULL)
b34976b6 3872 return FALSE;
c434dee6
AJ		 3873 if (*name == '\0')
3874 name = bfd_section_name (input_bfd, sec);
3875 }
3876
3877 if (r == bfd_reloc_overflow)
8b43e456 3878 {
78984959 3879 if (converted_reloc)
8b43e456
L		 3880 {
3881 info->callbacks->einfo
3882 (_("%F%P: failed to convert GOTPCREL relocation; relink with --no-relax\n"));
3883 return FALSE;
3884 }
3885 (*info->callbacks->reloc_overflow)
3886 (info, (h ? &h->root : NULL), name, howto->name,
3887 (bfd_vma) 0, input_bfd, input_section, rel->r_offset);
3888 }
c434dee6
AJ		 3889 else
3890 {
4eca0228 3891 _bfd_error_handler
695344c0 3892 /* xgettext:c-format */
2dcf00ce 3893 (_("%pB(%pA+%#" PRIx64 "): reloc against `%s': error %d"),
d003868e 3894 input_bfd, input_section,
2dcf00ce 3895 (uint64_t) rel->r_offset, name, (int) r);
b34976b6 3896 return FALSE;
8da6118f
KH		 3897 }
3898 }
60f2e42e
L		 3899
3900 if (wrel != rel)
3901 *wrel = *rel;
3902 }
3903
3904 if (wrel != rel)
3905 {
3906 Elf_Internal_Shdr *rel_hdr;
3907 size_t deleted = rel - wrel;
3908
3909 rel_hdr = _bfd_elf_single_rel_hdr (input_section->output_section);
3910 rel_hdr->sh_size -= rel_hdr->sh_entsize * deleted;
3911 if (rel_hdr->sh_size == 0)
3912 {
3913 /* It is too late to remove an empty reloc section. Leave
3914 one NONE reloc.
3915 ??? What is wrong with an empty section??? */
3916 rel_hdr->sh_size = rel_hdr->sh_entsize;
3917 deleted -= 1;
3918 }
3919 rel_hdr = _bfd_elf_single_rel_hdr (input_section);
3920 rel_hdr->sh_size -= rel_hdr->sh_entsize * deleted;
3921 input_section->reloc_count -= deleted;
8d88c4ca 3922 }
70256ad8 3923
b34976b6 3924 return TRUE;
70256ad8
AJ		 3925}
3926
3927/* Finish up dynamic symbol handling. We set the contents of various
3928 dynamic sections here. */
3929
b34976b6 3930static bfd_boolean
351f65ca
L		 3931elf_x86_64_finish_dynamic_symbol (bfd *output_bfd,
3932 struct bfd_link_info *info,
3933 struct elf_link_hash_entry *h,
aec6b87e 3934 Elf_Internal_Sym *sym)
70256ad8 3935{
0afcef53 3936 struct elf_x86_link_hash_table *htab;
f2c29a16 3937 bfd_boolean use_plt_second;
0afcef53 3938 struct elf_x86_link_hash_entry *eh;
aec6b87e 3939 bfd_boolean local_undefweak;
70256ad8 3940
0afcef53 3941 htab = elf_x86_hash_table (info, X86_64_ELF_DATA);
4dfe6ac6
NC		 3942 if (htab == NULL)
3943 return FALSE;
70256ad8 3944
f2c29a16
L		 3945 /* Use the second PLT section only if there is .plt section. */
3946 use_plt_second = htab->elf.splt != NULL && htab->plt_second != NULL;
0ff2b86e 3947
0afcef53 3948 eh = (struct elf_x86_link_hash_entry *) h;
9e9821dd
L		 3949 if (eh->no_finish_dynamic_symbol)
3950 abort ();
dd7e64d4 3951
aec6b87e
L		 3952 /* We keep PLT/GOT entries without dynamic PLT/GOT relocations for
3953 resolved undefined weak symbols in executable so that their
3954 references have value 0 at run-time. */
c5bce5c6 3955 local_undefweak = UNDEFINED_WEAK_RESOLVED_TO_ZERO (info, eh);
aec6b87e 3956
70256ad8
AJ		 3957 if (h->plt.offset != (bfd_vma) -1)
3958 {
70256ad8 3959 bfd_vma plt_index;
38b12349 3960 bfd_vma got_offset, plt_offset;
70256ad8 3961 Elf_Internal_Rela rela;
947216bf 3962 bfd_byte *loc;
0ff2b86e 3963 asection *plt, *gotplt, *relplt, *resolved_plt;
351f65ca 3964 const struct elf_backend_data *bed;
5974eba6 3965 bfd_vma plt_got_pcrel_offset;
cbe950e9
L		 3966
3967 /* When building a static executable, use .iplt, .igot.plt and
3968 .rela.iplt sections for STT_GNU_IFUNC symbols. */
6de2ae4a 3969 if (htab->elf.splt != NULL)
cbe950e9 3970 {
6de2ae4a
L		 3971 plt = htab->elf.splt;
3972 gotplt = htab->elf.sgotplt;
3973 relplt = htab->elf.srelplt;
cbe950e9
L		 3974 }
3975 else
3976 {
6de2ae4a
L		 3977 plt = htab->elf.iplt;
3978 gotplt = htab->elf.igotplt;
3979 relplt = htab->elf.irelplt;
cbe950e9 3980 }
70256ad8 3981
f3180fa9 3982 VERIFY_PLT_ENTRY (info, h, plt, gotplt, relplt, local_undefweak)
70256ad8
AJ		 3983
3984 /* Get the index in the procedure linkage table which
3985 corresponds to this symbol. This is the index of this symbol
3986 in all the symbols for which we are making plt entries. The
cbe950e9 3987 first entry in the procedure linkage table is reserved.
6bbec505 3988
cbe950e9 3989 Get the offset into the .got table of the entry that
407443a3 3990 corresponds to this function. Each .got entry is GOT_ENTRY_SIZE
cbe950e9
L		 3991 bytes. The first three are reserved for the dynamic linker.
3992
3993 For static executables, we don't reserve anything. */
3994
6de2ae4a 3995 if (plt == htab->elf.splt)
cbe950e9 3996 {
765e526c
L		 3997 got_offset = (h->plt.offset / htab->plt.plt_entry_size
3998 - htab->plt.has_plt0);
e1f98742 3999 got_offset = (got_offset + 3) * GOT_ENTRY_SIZE;
cbe950e9
L		 4000 }
4001 else
4002 {
765e526c 4003 got_offset = h->plt.offset / htab->plt.plt_entry_size;
e1f98742 4004 got_offset = got_offset * GOT_ENTRY_SIZE;
cbe950e9 4005 }
70256ad8 4006
38b12349 4007 /* Fill in the entry in the procedure linkage table. */
765e526c
L		 4008 memcpy (plt->contents + h->plt.offset, htab->plt.plt_entry,
4009 htab->plt.plt_entry_size);
f2c29a16 4010 if (use_plt_second)
0ff2b86e 4011 {
f2c29a16 4012 memcpy (htab->plt_second->contents + eh->plt_second.offset,
765e526c
L		 4013 htab->non_lazy_plt->plt_entry,
4014 htab->non_lazy_plt->plt_entry_size);
0ff2b86e 4015
f2c29a16
L		 4016 resolved_plt = htab->plt_second;
4017 plt_offset = eh->plt_second.offset;
0ff2b86e
L		 4018 }
4019 else
4020 {
0ff2b86e
L		 4021 resolved_plt = plt;
4022 plt_offset = h->plt.offset;
4023 }
eed180f8
RM		 4024
4025 /* Insert the relocation positions of the plt section. */
4026
4027 /* Put offset the PC-relative instruction referring to the GOT entry,
4028 subtracting the size of that instruction. */
ab7fede8
L		 4029 plt_got_pcrel_offset = (gotplt->output_section->vma
4030 + gotplt->output_offset
4031 + got_offset
4032 - resolved_plt->output_section->vma
4033 - resolved_plt->output_offset
4034 - plt_offset
765e526c 4035 - htab->plt.plt_got_insn_size);
ab7fede8
L		 4036
4037 /* Check PC-relative offset overflow in PLT entry. */
5974eba6 4038 if ((plt_got_pcrel_offset + 0x80000000) > 0xffffffff)
695344c0 4039 /* xgettext:c-format */
871b3ab2 4040 info->callbacks->einfo (_("%F%pB: PC-relative offset overflow in PLT entry for `%s'\n"),
ab7fede8
L		 4041 output_bfd, h->root.root.string);
4042
4043 bfd_put_32 (output_bfd, plt_got_pcrel_offset,
38b12349 4044 (resolved_plt->contents + plt_offset
765e526c 4045 + htab->plt.plt_got_offset));
cbe950e9 4046
653165cc 4047 /* Fill in the entry in the global offset table, initially this
aec6b87e
L		 4048 points to the second part of the PLT entry. Leave the entry
4049 as zero for undefined weak symbol in PIE. No PLT relocation
4050 against undefined weak symbol in PIE. */
4051 if (!local_undefweak)
cbe950e9 4052 {
765e526c 4053 if (htab->plt.has_plt0)
38b12349
L		 4054 bfd_put_64 (output_bfd, (plt->output_section->vma
4055 + plt->output_offset
4056 + h->plt.offset
765e526c 4057 + htab->lazy_plt->plt_lazy_offset),
38b12349 4058 gotplt->contents + got_offset);
aec6b87e
L		 4059
4060 /* Fill in the entry in the .rela.plt section. */
4061 rela.r_offset = (gotplt->output_section->vma
4062 + gotplt->output_offset
4063 + got_offset);
cf1070f1 4064 if (PLT_LOCAL_IFUNC_P (info, h))
aec6b87e 4065 {
871b3ab2 4066 info->callbacks->minfo (_("Local IFUNC function `%s' in %pB\n"),
6322e5c5
L		 4067 h->root.root.string,
4068 h->root.u.def.section->owner);
4069
aec6b87e
L		 4070 /* If an STT_GNU_IFUNC symbol is locally defined, generate
4071 R_X86_64_IRELATIVE instead of R_X86_64_JUMP_SLOT. */
4072 rela.r_info = htab->r_info (0, R_X86_64_IRELATIVE);
4073 rela.r_addend = (h->root.u.def.value
4074 + h->root.u.def.section->output_section->vma
4075 + h->root.u.def.section->output_offset);
4076 /* R_X86_64_IRELATIVE comes last. */
4077 plt_index = htab->next_irelative_index--;
4078 }
4079 else
4080 {
4081 rela.r_info = htab->r_info (h->dynindx, R_X86_64_JUMP_SLOT);
4082 rela.r_addend = 0;
4083 plt_index = htab->next_jump_slot_index++;
4084 }
e1f98742 4085
38b12349
L		 4086 /* Don't fill the second and third slots in PLT entry for
4087 static executables nor without PLT0. */
765e526c 4088 if (plt == htab->elf.splt && htab->plt.has_plt0)
aec6b87e 4089 {
38b12349 4090 bfd_vma plt0_offset
765e526c 4091 = h->plt.offset + htab->lazy_plt->plt_plt_insn_end;
aec6b87e
L		 4092
4093 /* Put relocation index. */
4094 bfd_put_32 (output_bfd, plt_index,
4095 (plt->contents + h->plt.offset
765e526c 4096 + htab->lazy_plt->plt_reloc_offset));
aec6b87e
L		 4097
4098 /* Put offset for jmp .PLT0 and check for overflow. We don't
4099 check relocation index for overflow since branch displacement
4100 will overflow first. */
4101 if (plt0_offset > 0x80000000)
695344c0 4102 /* xgettext:c-format */
871b3ab2 4103 info->callbacks->einfo (_("%F%pB: branch displacement overflow in PLT entry for `%s'\n"),
aec6b87e
L		 4104 output_bfd, h->root.root.string);
4105 bfd_put_32 (output_bfd, - plt0_offset,
38b12349 4106 (plt->contents + h->plt.offset
765e526c 4107 + htab->lazy_plt->plt_plt_offset));
aec6b87e 4108 }
351f65ca 4109
aec6b87e
L		 4110 bed = get_elf_backend_data (output_bfd);
4111 loc = relplt->contents + plt_index * bed->s->sizeof_rela;
4112 bed->s->swap_reloca_out (output_bfd, &rela, loc);
4113 }
dd7e64d4
L		 4114 }
4115 else if (eh->plt_got.offset != (bfd_vma) -1)
4116 {
38b12349 4117 bfd_vma got_offset, plt_offset;
dd7e64d4
L		 4118 asection *plt, *got;
4119 bfd_boolean got_after_plt;
4120 int32_t got_pcrel_offset;
dd7e64d4
L		 4121
4122 /* Set the entry in the GOT procedure linkage table. */
4123 plt = htab->plt_got;
4124 got = htab->elf.sgot;
4125 got_offset = h->got.offset;
4126
4127 if (got_offset == (bfd_vma) -1
e492d2f8 4128 || (h->type == STT_GNU_IFUNC && h->def_regular)
dd7e64d4
L		 4129 || plt == NULL
4130 || got == NULL)
4131 abort ();
70256ad8 4132
38b12349 4133 /* Use the non-lazy PLT entry template for the GOT PLT since they
dd7e64d4 4134 are the identical. */
dd7e64d4
L		 4135 /* Fill in the entry in the GOT procedure linkage table. */
4136 plt_offset = eh->plt_got.offset;
4137 memcpy (plt->contents + plt_offset,
765e526c
L		 4138 htab->non_lazy_plt->plt_entry,
4139 htab->non_lazy_plt->plt_entry_size);
dd7e64d4
L		 4140
4141 /* Put offset the PC-relative instruction referring to the GOT
4142 entry, subtracting the size of that instruction. */
4143 got_pcrel_offset = (got->output_section->vma
4144 + got->output_offset
4145 + got_offset
4146 - plt->output_section->vma
4147 - plt->output_offset
4148 - plt_offset
765e526c 4149 - htab->non_lazy_plt->plt_got_insn_size);
dd7e64d4
L		 4150
4151 /* Check PC-relative offset overflow in GOT PLT entry. */
4152 got_after_plt = got->output_section->vma > plt->output_section->vma;
4153 if ((got_after_plt && got_pcrel_offset < 0)
4154 || (!got_after_plt && got_pcrel_offset > 0))
695344c0 4155 /* xgettext:c-format */
871b3ab2 4156 info->callbacks->einfo (_("%F%pB: PC-relative offset overflow in GOT PLT entry for `%s'\n"),
dd7e64d4
L		 4157 output_bfd, h->root.root.string);
4158
4159 bfd_put_32 (output_bfd, got_pcrel_offset,
38b12349 4160 (plt->contents + plt_offset
765e526c 4161 + htab->non_lazy_plt->plt_got_offset));
dd7e64d4
L		 4162 }
4163
aec6b87e
L		 4164 if (!local_undefweak
4165 && !h->def_regular
dd7e64d4
L		 4166 && (h->plt.offset != (bfd_vma) -1
4167 || eh->plt_got.offset != (bfd_vma) -1))
4168 {
4169 /* Mark the symbol as undefined, rather than as defined in
4170 the .plt section. Leave the value if there were any
4171 relocations where pointer equality matters (this is a clue
4172 for the dynamic linker, to make function pointer
4173 comparisons work between an application and shared
4174 library), otherwise set it to zero. If a function is only
4175 called from a binary, there is no need to slow down
4176 shared libraries because of that. */
4177 sym->st_shndx = SHN_UNDEF;
4178 if (!h->pointer_equality_needed)
4179 sym->st_value = 0;
70256ad8
AJ		 4180 }
4181
4ec09950
L		 4182 _bfd_x86_elf_link_fixup_ifunc_symbol (info, htab, h, sym);
4183
aec6b87e
L		 4184 /* Don't generate dynamic GOT relocation against undefined weak
4185 symbol in executable. */
bffbf940 4186 if (h->got.offset != (bfd_vma) -1
0afcef53
L		 4187 && ! GOT_TLS_GD_ANY_P (elf_x86_hash_entry (h)->tls_type)
4188 && elf_x86_hash_entry (h)->tls_type != GOT_TLS_IE
aec6b87e 4189 && !local_undefweak)
053579d7 4190 {
053579d7 4191 Elf_Internal_Rela rela;
233cc9c1 4192 asection *relgot = htab->elf.srelgot;
053579d7
AJ		 4193
4194 /* This symbol has an entry in the global offset table. Set it
bffbf940 4195 up. */
6de2ae4a 4196 if (htab->elf.sgot == NULL || htab->elf.srelgot == NULL)
c434dee6 4197 abort ();
053579d7 4198
6de2ae4a
L		 4199 rela.r_offset = (htab->elf.sgot->output_section->vma
4200 + htab->elf.sgot->output_offset
dc810e39 4201 + (h->got.offset &~ (bfd_vma) 1));
053579d7
AJ		 4202
4203 /* If this is a static link, or it is a -Bsymbolic link and the
4204 symbol is defined locally or was forced to be local because
4205 of a version file, we just want to emit a RELATIVE reloc.
4206 The entry in the global offset table will already have been
4207 initialized in the relocate_section function. */
710ab287 4208 if (h->def_regular
0018b0a3
L		 4209 && h->type == STT_GNU_IFUNC)
4210 {
233cc9c1
L		 4211 if (h->plt.offset == (bfd_vma) -1)
4212 {
4213 /* STT_GNU_IFUNC is referenced without PLT. */
4214 if (htab->elf.splt == NULL)
4215 {
4216 /* use .rel[a].iplt section to store .got relocations
4217 in static executable. */
4218 relgot = htab->elf.irelplt;
4219 }
6999821f 4220 if (SYMBOL_REFERENCES_LOCAL_P (info, h))
233cc9c1 4221 {
871b3ab2 4222 info->callbacks->minfo (_("Local IFUNC function `%s' in %pB\n"),
6322e5c5
L		 4223 h->root.root.string,
4224 h->root.u.def.section->owner);
4225
233cc9c1
L		 4226 rela.r_info = htab->r_info (0,
4227 R_X86_64_IRELATIVE);
4228 rela.r_addend = (h->root.u.def.value
4229 + h->root.u.def.section->output_section->vma
4230 + h->root.u.def.section->output_offset);
4231 }
4232 else
4233 goto do_glob_dat;
4234 }
4235 else if (bfd_link_pic (info))
710ab287
L		 4236 {
4237 /* Generate R_X86_64_GLOB_DAT. */
4238 goto do_glob_dat;
4239 }
4240 else
4241 {
90d60710 4242 asection *plt;
aab82f4c 4243 bfd_vma plt_offset;
90d60710 4244
710ab287
L		 4245 if (!h->pointer_equality_needed)
4246 abort ();
4247
4248 /* For non-shared object, we can't use .got.plt, which
4249 contains the real function addres if we need pointer
4250 equality. We load the GOT entry with the PLT entry. */
f2c29a16 4251 if (htab->plt_second != NULL)
aab82f4c 4252 {
f2c29a16
L		 4253 plt = htab->plt_second;
4254 plt_offset = eh->plt_second.offset;
aab82f4c
L		 4255 }
4256 else
4257 {
4258 plt = htab->elf.splt ? htab->elf.splt : htab->elf.iplt;
4259 plt_offset = h->plt.offset;
4260 }
710ab287
L		 4261 bfd_put_64 (output_bfd, (plt->output_section->vma
4262 + plt->output_offset
aab82f4c 4263 + plt_offset),
6de2ae4a 4264 htab->elf.sgot->contents + h->got.offset);
710ab287
L		 4265 return TRUE;
4266 }
0018b0a3 4267 }
0e1862bb 4268 else if (bfd_link_pic (info)
6999821f 4269 && SYMBOL_REFERENCES_LOCAL_P (info, h))
053579d7 4270 {
ad71ce8d 4271 if (!(h->def_regular || ELF_COMMON_DEF_P (h)))
41bed6dd 4272 return FALSE;
cc78d0af 4273 BFD_ASSERT((h->got.offset & 1) != 0);
351f65ca 4274 rela.r_info = htab->r_info (0, R_X86_64_RELATIVE);
053579d7
AJ		 4275 rela.r_addend = (h->root.u.def.value
4276 + h->root.u.def.section->output_section->vma
4277 + h->root.u.def.section->output_offset);
4278 }
4279 else
4280 {
4281 BFD_ASSERT((h->got.offset & 1) == 0);
710ab287 4282do_glob_dat:
c434dee6 4283 bfd_put_64 (output_bfd, (bfd_vma) 0,
6de2ae4a 4284 htab->elf.sgot->contents + h->got.offset);
351f65ca 4285 rela.r_info = htab->r_info (h->dynindx, R_X86_64_GLOB_DAT);
053579d7
AJ		 4286 rela.r_addend = 0;
4287 }
4288
233cc9c1 4289 elf_append_rela (output_bfd, relgot, &rela);
053579d7
AJ		 4290 }
4291
f5385ebf 4292 if (h->needs_copy)
70256ad8 4293 {
70256ad8 4294 Elf_Internal_Rela rela;
5474d94f 4295 asection *s;
70256ad8
AJ		 4296
4297 /* This symbol needs a copy reloc. Set it up. */
ff38b4cc 4298 VERIFY_COPY_RELOC (h, htab)
70256ad8
AJ		 4299
4300 rela.r_offset = (h->root.u.def.value
4301 + h->root.u.def.section->output_section->vma
4302 + h->root.u.def.section->output_offset);
351f65ca 4303 rela.r_info = htab->r_info (h->dynindx, R_X86_64_COPY);
70256ad8 4304 rela.r_addend = 0;
afbf7e8e 4305 if (h->root.u.def.section == htab->elf.sdynrelro)
5474d94f
AM		 4306 s = htab->elf.sreldynrelro;
4307 else
4308 s = htab->elf.srelbss;
4309 elf_append_rela (output_bfd, s, &rela);
70256ad8
AJ		 4310 }
4311
b34976b6 4312 return TRUE;
70256ad8
AJ		 4313}
4314
c25bc9fc
L		 4315/* Finish up local dynamic symbol handling. We set the contents of
4316 various dynamic sections here. */
4317
4318static bfd_boolean
351f65ca 4319elf_x86_64_finish_local_dynamic_symbol (void **slot, void *inf)
c25bc9fc
L		 4320{
4321 struct elf_link_hash_entry *h
4322 = (struct elf_link_hash_entry *) *slot;
4323 struct bfd_link_info *info
eed180f8 4324 = (struct bfd_link_info *) inf;
c25bc9fc 4325
351f65ca 4326 return elf_x86_64_finish_dynamic_symbol (info->output_bfd,
5f0f0847 4327 info, h, NULL);
c25bc9fc
L		 4328}
4329
aec6b87e
L		 4330/* Finish up undefined weak symbol handling in PIE. Fill its PLT entry
4331 here since undefined weak symbol may not be dynamic and may not be
4332 called for elf_x86_64_finish_dynamic_symbol. */
4333
4334static bfd_boolean
4335elf_x86_64_pie_finish_undefweak_symbol (struct bfd_hash_entry *bh,
4336 void *inf)
4337{
4338 struct elf_link_hash_entry *h = (struct elf_link_hash_entry *) bh;
4339 struct bfd_link_info *info = (struct bfd_link_info *) inf;
4340
4341 if (h->root.type != bfd_link_hash_undefweak
4342 || h->dynindx != -1)
4343 return TRUE;
4344
4345 return elf_x86_64_finish_dynamic_symbol (info->output_bfd,
5f0f0847 4346 info, h, NULL);
aec6b87e
L		 4347}
4348
c434dee6
AJ		 4349/* Used to decide how to sort relocs in an optimal manner for the
4350 dynamic linker, before writing them out. */
4351
4352static enum elf_reloc_type_class
cae1fbbb 4353elf_x86_64_reloc_type_class (const struct bfd_link_info *info,
7e612e98
AM		 4354 const asection *rel_sec ATTRIBUTE_UNUSED,
4355 const Elf_Internal_Rela *rela)
c434dee6 4356{
cae1fbbb
L		 4357 bfd *abfd = info->output_bfd;
4358 const struct elf_backend_data *bed = get_elf_backend_data (abfd);
0afcef53
L		 4359 struct elf_x86_link_hash_table *htab
4360 = elf_x86_hash_table (info, X86_64_ELF_DATA);
cae1fbbb 4361
d9e3b590
L		 4362 if (htab->elf.dynsym != NULL
4363 && htab->elf.dynsym->contents != NULL)
4364 {
4365 /* Check relocation against STT_GNU_IFUNC symbol if there are
07d6d2b8 4366 dynamic symbols. */
d9e3b590 4367 unsigned long r_symndx = htab->r_sym (rela->r_info);
897463b1
L		 4368 if (r_symndx != STN_UNDEF)
4369 {
4370 Elf_Internal_Sym sym;
4371 if (!bed->s->swap_symbol_in (abfd,
4372 (htab->elf.dynsym->contents
4373 + r_symndx * bed->s->sizeof_sym),
4374 0, &sym))
4375 abort ();
d9e3b590 4376
897463b1
L		 4377 if (ELF_ST_TYPE (sym.st_info) == STT_GNU_IFUNC)
4378 return reloc_class_ifunc;
4379 }
d9e3b590 4380 }
cae1fbbb 4381
351f65ca 4382 switch ((int) ELF32_R_TYPE (rela->r_info))
c434dee6 4383 {
c428ce9d
L		 4384 case R_X86_64_IRELATIVE:
4385 return reloc_class_ifunc;
c434dee6 4386 case R_X86_64_RELATIVE:
1da80baa 4387 case R_X86_64_RELATIVE64:
c434dee6
AJ		 4388 return reloc_class_relative;
4389 case R_X86_64_JUMP_SLOT:
4390 return reloc_class_plt;
4391 case R_X86_64_COPY:
4392 return reloc_class_copy;
4393 default:
4394 return reloc_class_normal;
4395 }
4396}
4397
70256ad8
AJ		 4398/* Finish up the dynamic sections. */
4399
b34976b6 4400static bfd_boolean
351f65ca
L		 4401elf_x86_64_finish_dynamic_sections (bfd *output_bfd,
4402 struct bfd_link_info *info)
70256ad8 4403{
0afcef53 4404 struct elf_x86_link_hash_table *htab;
70256ad8 4405
9577f60b 4406 htab = _bfd_x86_elf_finish_dynamic_sections (output_bfd, info);
4dfe6ac6
NC		 4407 if (htab == NULL)
4408 return FALSE;
4409
9577f60b
L		 4410 if (! htab->elf.dynamic_sections_created)
4411 return TRUE;
70256ad8 4412
9577f60b 4413 if (htab->elf.splt && htab->elf.splt->size > 0)
e41b3a13 4414 {
9577f60b
L		 4415 elf_section_data (htab->elf.splt->output_section)
4416 ->this_hdr.sh_entsize = htab->plt.plt_entry_size;
e41b3a13 4417
9577f60b 4418 if (htab->plt.has_plt0)
fff53dae 4419 {
9577f60b
L		 4420 /* Fill in the special first entry in the procedure linkage
4421 table. */
4422 memcpy (htab->elf.splt->contents,
4423 htab->lazy_plt->plt0_entry,
4424 htab->lazy_plt->plt0_entry_size);
4425 /* Add offset for pushq GOT+8(%rip), since the instruction
4426 uses 6 bytes subtract this value. */
4427 bfd_put_32 (output_bfd,
4428 (htab->elf.sgotplt->output_section->vma
4429 + htab->elf.sgotplt->output_offset
4430 + 8
4431 - htab->elf.splt->output_section->vma
4432 - htab->elf.splt->output_offset
4433 - 6),
4434 (htab->elf.splt->contents
4435 + htab->lazy_plt->plt0_got1_offset));
4436 /* Add offset for the PC-relative instruction accessing
4437 GOT+16, subtracting the offset to the end of that
4438 instruction. */
4439 bfd_put_32 (output_bfd,
4440 (htab->elf.sgotplt->output_section->vma
4441 + htab->elf.sgotplt->output_offset
4442 + 16
4443 - htab->elf.splt->output_section->vma
4444 - htab->elf.splt->output_offset
4445 - htab->lazy_plt->plt0_got2_insn_end),
4446 (htab->elf.splt->contents
4447 + htab->lazy_plt->plt0_got2_offset));
fff53dae 4448 }
fff53dae 4449
9577f60b 4450 if (htab->tlsdesc_plt)
8361ed4d 4451 {
9577f60b
L		 4452 bfd_put_64 (output_bfd, (bfd_vma) 0,
4453 htab->elf.sgot->contents + htab->tlsdesc_got);
4454
4455 memcpy (htab->elf.splt->contents + htab->tlsdesc_plt,
92e68c1d
L		 4456 htab->lazy_plt->plt_tlsdesc_entry,
4457 htab->lazy_plt->plt_tlsdesc_entry_size);
9577f60b 4458
bf54968b
L		 4459 /* Add offset for pushq GOT+8(%rip), since ENDBR64 uses 4
4460 bytes and the instruction uses 6 bytes, subtract these
4461 values. */
9577f60b
L		 4462 bfd_put_32 (output_bfd,
4463 (htab->elf.sgotplt->output_section->vma
4464 + htab->elf.sgotplt->output_offset
4465 + 8
4466 - htab->elf.splt->output_section->vma
4467 - htab->elf.splt->output_offset
4468 - htab->tlsdesc_plt
92e68c1d 4469 - htab->lazy_plt->plt_tlsdesc_got1_insn_end),
9577f60b
L		 4470 (htab->elf.splt->contents
4471 + htab->tlsdesc_plt
92e68c1d 4472 + htab->lazy_plt->plt_tlsdesc_got1_offset));
bf54968b
L		 4473 /* Add offset for indirect branch via GOT+TDG, where TDG
4474 stands for htab->tlsdesc_got, subtracting the offset
4475 to the end of that instruction. */
9577f60b
L		 4476 bfd_put_32 (output_bfd,
4477 (htab->elf.sgot->output_section->vma
4478 + htab->elf.sgot->output_offset
4479 + htab->tlsdesc_got
4480 - htab->elf.splt->output_section->vma
4481 - htab->elf.splt->output_offset
4482 - htab->tlsdesc_plt
92e68c1d 4483 - htab->lazy_plt->plt_tlsdesc_got2_insn_end),
9577f60b 4484 (htab->elf.splt->contents
92e68c1d
L		 4485 + htab->tlsdesc_plt
4486 + htab->lazy_plt->plt_tlsdesc_got2_offset));
8361ed4d
L		 4487 }
4488 }
4489
aec6b87e
L		 4490 /* Fill PLT entries for undefined weak symbols in PIE. */
4491 if (bfd_link_pie (info))
4492 bfd_hash_traverse (&info->hash->table,
4493 elf_x86_64_pie_finish_undefweak_symbol,
4494 info);
4495
b34976b6 4496 return TRUE;
8d88c4ca
NC		 4497}
4498
233cc9c1
L		 4499/* Fill PLT/GOT entries and allocate dynamic relocations for local
4500 STT_GNU_IFUNC symbols, which aren't in the ELF linker hash table.
4501 It has to be done before elf_link_sort_relocs is called so that
4502 dynamic relocations are properly sorted. */
4503
4504static bfd_boolean
4505elf_x86_64_output_arch_local_syms
4506 (bfd *output_bfd ATTRIBUTE_UNUSED,
4507 struct bfd_link_info *info,
4508 void *flaginfo ATTRIBUTE_UNUSED,
4509 int (*func) (void *, const char *,
4510 Elf_Internal_Sym *,
4511 asection *,
4512 struct elf_link_hash_entry *) ATTRIBUTE_UNUSED)
4513{
0afcef53
L		 4514 struct elf_x86_link_hash_table *htab
4515 = elf_x86_hash_table (info, X86_64_ELF_DATA);
233cc9c1
L		 4516 if (htab == NULL)
4517 return FALSE;
4518
4519 /* Fill PLT and GOT entries for local STT_GNU_IFUNC symbols. */
4520 htab_traverse (htab->loc_hash_table,
4521 elf_x86_64_finish_local_dynamic_symbol,
4522 info);
4523
4524 return TRUE;
4525}
4526
38b12349 4527/* Forward declaration. */
765e526c 4528static const struct elf_x86_lazy_plt_layout elf_x86_64_nacl_plt;
38b12349
L		 4529
4530/* Similar to _bfd_elf_get_synthetic_symtab. Support PLTs with all
4531 dynamic relocations. */
4532
4533static long
4534elf_x86_64_get_synthetic_symtab (bfd *abfd,
4535 long symcount ATTRIBUTE_UNUSED,
4536 asymbol **syms ATTRIBUTE_UNUSED,
4537 long dynsymcount,
4538 asymbol **dynsyms,
4539 asymbol **ret)
4540{
f493882d 4541 long count, i, n;
38b12349 4542 int j;
38b12349 4543 bfd_byte *plt_contents;
f493882d 4544 long relsize;
765e526c
L		 4545 const struct elf_x86_lazy_plt_layout *lazy_plt;
4546 const struct elf_x86_non_lazy_plt_layout *non_lazy_plt;
4547 const struct elf_x86_lazy_plt_layout *lazy_bnd_plt;
4548 const struct elf_x86_non_lazy_plt_layout *non_lazy_bnd_plt;
4549 const struct elf_x86_lazy_plt_layout *lazy_ibt_plt;
4550 const struct elf_x86_non_lazy_plt_layout *non_lazy_ibt_plt;
38b12349 4551 asection *plt;
f493882d
L		 4552 enum elf_x86_plt_type plt_type;
4553 struct elf_x86_plt plts[] =
144bed8d 4554 {
38b12349
L		 4555 { ".plt", NULL, NULL, plt_unknown, 0, 0, 0, 0 },
4556 { ".plt.got", NULL, NULL, plt_non_lazy, 0, 0, 0, 0 },
f2c29a16
L		 4557 { ".plt.sec", NULL, NULL, plt_second, 0, 0, 0, 0 },
4558 { ".plt.bnd", NULL, NULL, plt_second, 0, 0, 0, 0 },
dd9e66ee 4559 { NULL, NULL, NULL, plt_non_lazy, 0, 0, 0, 0 }
38b12349 4560 };
144bed8d 4561
38b12349 4562 *ret = NULL;
144bed8d 4563
38b12349
L		 4564 if ((abfd->flags & (DYNAMIC | EXEC_P)) == 0)
4565 return 0;
144bed8d 4566
38b12349
L		 4567 if (dynsymcount <= 0)
4568 return 0;
cca5b8b6 4569
38b12349
L		 4570 relsize = bfd_get_dynamic_reloc_upper_bound (abfd);
4571 if (relsize <= 0)
4572 return -1;
4573
3b4c3844 4574 if (get_elf_x86_backend_data (abfd)->target_os != is_nacl)
144bed8d 4575 {
38b12349
L		 4576 lazy_plt = &elf_x86_64_lazy_plt;
4577 non_lazy_plt = &elf_x86_64_non_lazy_plt;
4578 lazy_bnd_plt = &elf_x86_64_lazy_bnd_plt;
4579 non_lazy_bnd_plt = &elf_x86_64_non_lazy_bnd_plt;
ee2fdd6f
L		 4580 if (ABI_64_P (abfd))
4581 {
4582 lazy_ibt_plt = &elf_x86_64_lazy_ibt_plt;
4583 non_lazy_ibt_plt = &elf_x86_64_non_lazy_ibt_plt;
4584 }
4585 else
4586 {
4587 lazy_ibt_plt = &elf_x32_lazy_ibt_plt;
4588 non_lazy_ibt_plt = &elf_x32_non_lazy_ibt_plt;
4589 }
38b12349
L		 4590 }
4591 else
4592 {
4593 lazy_plt = &elf_x86_64_nacl_plt;
4594 non_lazy_plt = NULL;
4595 lazy_bnd_plt = NULL;
4596 non_lazy_bnd_plt = NULL;
ee2fdd6f
L		 4597 lazy_ibt_plt = NULL;
4598 non_lazy_ibt_plt = NULL;
38b12349 4599 }
144bed8d 4600
38b12349
L		 4601 count = 0;
4602 for (j = 0; plts[j].name != NULL; j++)
4603 {
4604 plt = bfd_get_section_by_name (abfd, plts[j].name);
90efb642 4605 if (plt == NULL || plt->size == 0)
6f25f223 4606 continue;
533d0af0 4607
38b12349
L		 4608 /* Get the PLT section contents. */
4609 plt_contents = (bfd_byte *) bfd_malloc (plt->size);
4610 if (plt_contents == NULL)
4611 break;
4612 if (!bfd_get_section_contents (abfd, (asection *) plt,
4613 plt_contents, 0, plt->size))
4614 {
4615 free (plt_contents);
4616 break;
4617 }
144bed8d 4618
38b12349
L		 4619 /* Check what kind of PLT it is. */
4620 plt_type = plt_unknown;
90efb642
L		 4621 if (plts[j].type == plt_unknown
4622 && (plt->size >= (lazy_plt->plt_entry_size
4623 + lazy_plt->plt_entry_size)))
144bed8d 4624 {
38b12349
L		 4625 /* Match lazy PLT first. Need to check the first two
4626 instructions. */
4627 if ((memcmp (plt_contents, lazy_plt->plt0_entry,
4628 lazy_plt->plt0_got1_offset) == 0)
4629 && (memcmp (plt_contents + 6, lazy_plt->plt0_entry + 6,
4630 2) == 0))
4631 plt_type = plt_lazy;
4632 else if (lazy_bnd_plt != NULL
4633 && (memcmp (plt_contents, lazy_bnd_plt->plt0_entry,
4634 lazy_bnd_plt->plt0_got1_offset) == 0)
4635 && (memcmp (plt_contents + 6,
4636 lazy_bnd_plt->plt0_entry + 6, 3) == 0))
ec1f73bb 4637 {
f2c29a16 4638 plt_type = plt_lazy | plt_second;
ee2fdd6f
L		 4639 /* The fist entry in the lazy IBT PLT is the same as the
4640 lazy BND PLT. */
4641 if ((memcmp (plt_contents + lazy_ibt_plt->plt_entry_size,
4642 lazy_ibt_plt->plt_entry,
4643 lazy_ibt_plt->plt_got_offset) == 0))
4644 lazy_plt = lazy_ibt_plt;
4645 else
4646 lazy_plt = lazy_bnd_plt;
ec1f73bb 4647 }
144bed8d 4648 }
fca6ae69 4649
38b12349 4650 if (non_lazy_plt != NULL
90efb642
L		 4651 && (plt_type == plt_unknown || plt_type == plt_non_lazy)
4652 && plt->size >= non_lazy_plt->plt_entry_size)
38b12349
L		 4653 {
4654 /* Match non-lazy PLT. */
4655 if (memcmp (plt_contents, non_lazy_plt->plt_entry,
4656 non_lazy_plt->plt_got_offset) == 0)
4657 plt_type = plt_non_lazy;
4658 }
4659
ee2fdd6f 4660 if (plt_type == plt_unknown || plt_type == plt_second)
38b12349 4661 {
ee2fdd6f 4662 if (non_lazy_bnd_plt != NULL
90efb642 4663 && plt->size >= non_lazy_bnd_plt->plt_entry_size
ee2fdd6f
L		 4664 && (memcmp (plt_contents, non_lazy_bnd_plt->plt_entry,
4665 non_lazy_bnd_plt->plt_got_offset) == 0))
38b12349 4666 {
ee2fdd6f 4667 /* Match BND PLT. */
f2c29a16 4668 plt_type = plt_second;
38b12349
L		 4669 non_lazy_plt = non_lazy_bnd_plt;
4670 }
ee2fdd6f 4671 else if (non_lazy_ibt_plt != NULL
90efb642 4672 && plt->size >= non_lazy_ibt_plt->plt_entry_size
ee2fdd6f
L		 4673 && (memcmp (plt_contents,
4674 non_lazy_ibt_plt->plt_entry,
4675 non_lazy_ibt_plt->plt_got_offset) == 0))
4676 {
4677 /* Match IBT PLT. */
4678 plt_type = plt_second;
4679 non_lazy_plt = non_lazy_ibt_plt;
4680 }
38b12349
L		 4681 }
4682
4683 if (plt_type == plt_unknown)
37c0b6ee
L		 4684 {
4685 free (plt_contents);
4686 continue;
4687 }
38b12349
L		 4688
4689 plts[j].sec = plt;
4690 plts[j].type = plt_type;
4691
4692 if ((plt_type & plt_lazy))
4693 {
4694 plts[j].plt_got_offset = lazy_plt->plt_got_offset;
4695 plts[j].plt_got_insn_size = lazy_plt->plt_got_insn_size;
4696 plts[j].plt_entry_size = lazy_plt->plt_entry_size;
4697 /* Skip PLT0 in lazy PLT. */
4698 i = 1;
4699 }
4700 else
4701 {
4702 plts[j].plt_got_offset = non_lazy_plt->plt_got_offset;
4703 plts[j].plt_got_insn_size = non_lazy_plt->plt_got_insn_size;
4704 plts[j].plt_entry_size = non_lazy_plt->plt_entry_size;
4705 i = 0;
4706 }
4707
f2c29a16
L		 4708 /* Skip lazy PLT when the second PLT is used. */
4709 if (plt_type == (plt_lazy | plt_second))
38b12349
L		 4710 plts[j].count = 0;
4711 else
4712 {
4713 n = plt->size / plts[j].plt_entry_size;
4714 plts[j].count = n;
4715 count += n - i;
4716 }
4717
4718 plts[j].contents = plt_contents;
144bed8d
L		 4719 }
4720
f493882d
L		 4721 return _bfd_x86_elf_get_synthetic_symtab (abfd, count, relsize,
4722 (bfd_vma) 0, plts, dynsyms,
4723 ret);
0ff2b86e
L		 4724}
4725
d2b2c203
DJ		 4726/* Handle an x86-64 specific section when reading an object file. This
4727 is called when elfcode.h finds a section with an unknown type. */
4728
4729static bfd_boolean
0c723101
L		 4730elf_x86_64_section_from_shdr (bfd *abfd, Elf_Internal_Shdr *hdr,
4731 const char *name, int shindex)
d2b2c203
DJ		 4732{
4733 if (hdr->sh_type != SHT_X86_64_UNWIND)
4734 return FALSE;
4735
6dc132d9 4736 if (! _bfd_elf_make_section_from_shdr (abfd, hdr, name, shindex))
d2b2c203
DJ		 4737 return FALSE;
4738
4739 return TRUE;
4740}
4741
3b22753a
L		 4742/* Hook called by the linker routine which adds symbols from an object
4743 file. We use it to put SHN_X86_64_LCOMMON items in .lbss, instead
4744 of .bss. */
4745
4746static bfd_boolean
351f65ca 4747elf_x86_64_add_symbol_hook (bfd *abfd,
a43942db 4748 struct bfd_link_info *info ATTRIBUTE_UNUSED,
351f65ca
L		 4749 Elf_Internal_Sym *sym,
4750 const char **namep ATTRIBUTE_UNUSED,
4751 flagword *flagsp ATTRIBUTE_UNUSED,
4752 asection **secp,
4753 bfd_vma *valp)
3b22753a
L		 4754{
4755 asection *lcomm;
4756
4757 switch (sym->st_shndx)
4758 {
4759 case SHN_X86_64_LCOMMON:
4760 lcomm = bfd_get_section_by_name (abfd, "LARGE_COMMON");
4761 if (lcomm == NULL)
4762 {
4763 lcomm = bfd_make_section_with_flags (abfd,
4764 "LARGE_COMMON",
4765 (SEC_ALLOC
4766 | SEC_IS_COMMON
4767 | SEC_LINKER_CREATED));
4768 if (lcomm == NULL)
4769 return FALSE;
4770 elf_section_flags (lcomm) |= SHF_X86_64_LARGE;
4771 }
4772 *secp = lcomm;
4773 *valp = sym->st_size;
c35bdf6e 4774 return TRUE;
3b22753a 4775 }
d8045f23 4776
3b22753a
L		 4777 return TRUE;
4778}
4779
4780
4781/* Given a BFD section, try to locate the corresponding ELF section
4782 index. */
4783
4784static bfd_boolean
351f65ca
L		 4785elf_x86_64_elf_section_from_bfd_section (bfd *abfd ATTRIBUTE_UNUSED,
4786 asection *sec, int *index_return)
3b22753a
L		 4787{
4788 if (sec == &_bfd_elf_large_com_section)
4789 {
91d6fa6a 4790 *index_return = SHN_X86_64_LCOMMON;
3b22753a
L		 4791 return TRUE;
4792 }
4793 return FALSE;
4794}
4795
4796/* Process a symbol. */
4797
4798static void
351f65ca
L		 4799elf_x86_64_symbol_processing (bfd *abfd ATTRIBUTE_UNUSED,
4800 asymbol *asym)
3b22753a
L		 4801{
4802 elf_symbol_type *elfsym = (elf_symbol_type *) asym;
4803
4804 switch (elfsym->internal_elf_sym.st_shndx)
4805 {
4806 case SHN_X86_64_LCOMMON:
4807 asym->section = &_bfd_elf_large_com_section;
4808 asym->value = elfsym->internal_elf_sym.st_size;
4809 /* Common symbol doesn't set BSF_GLOBAL. */
4810 asym->flags &= ~BSF_GLOBAL;
4811 break;
4812 }
4813}
4814
4815static bfd_boolean
351f65ca 4816elf_x86_64_common_definition (Elf_Internal_Sym *sym)
3b22753a
L		 4817{
4818 return (sym->st_shndx == SHN_COMMON
4819 || sym->st_shndx == SHN_X86_64_LCOMMON);
4820}
4821
4822static unsigned int
351f65ca 4823elf_x86_64_common_section_index (asection *sec)
3b22753a
L		 4824{
4825 if ((elf_section_flags (sec) & SHF_X86_64_LARGE) == 0)
4826 return SHN_COMMON;
4827 else
4828 return SHN_X86_64_LCOMMON;
4829}
4830
4831static asection *
351f65ca 4832elf_x86_64_common_section (asection *sec)
3b22753a
L		 4833{
4834 if ((elf_section_flags (sec) & SHF_X86_64_LARGE) == 0)
4835 return bfd_com_section_ptr;
4836 else
4837 return &_bfd_elf_large_com_section;
4838}
4839
4840static bfd_boolean
5d13b3b3
AM		 4841elf_x86_64_merge_symbol (struct elf_link_hash_entry *h,
4842 const Elf_Internal_Sym *sym,
351f65ca 4843 asection **psec,
5d13b3b3
AM		 4844 bfd_boolean newdef,
4845 bfd_boolean olddef,
351f65ca 4846 bfd *oldbfd,
5d13b3b3 4847 const asection *oldsec)
3b22753a
L		 4848{
4849 /* A normal common symbol and a large common symbol result in a
00492999
L		 4850 normal common symbol. We turn the large common symbol into a
4851 normal one. */
5d13b3b3 4852 if (!olddef
3b22753a 4853 && h->root.type == bfd_link_hash_common
5d13b3b3
AM		 4854 && !newdef
4855 && bfd_is_com_section (*psec)
4856 && oldsec != *psec)
3b22753a 4857 {
00492999 4858 if (sym->st_shndx == SHN_COMMON
5d13b3b3 4859 && (elf_section_flags (oldsec) & SHF_X86_64_LARGE) != 0)
00492999
L		 4860 {
4861 h->root.u.c.p->section
4862 = bfd_make_section_old_way (oldbfd, "COMMON");
4863 h->root.u.c.p->section->flags = SEC_ALLOC;
4864 }
4865 else if (sym->st_shndx == SHN_X86_64_LCOMMON
5d13b3b3
AM		 4866 && (elf_section_flags (oldsec) & SHF_X86_64_LARGE) == 0)
4867 *psec = bfd_com_section_ptr;
3b22753a
L		 4868 }
4869
4870 return TRUE;
4871}
4872
4873static int
351f65ca
L		 4874elf_x86_64_additional_program_headers (bfd *abfd,
4875 struct bfd_link_info *info ATTRIBUTE_UNUSED)
3b22753a
L		 4876{
4877 asection *s;
9a2e389a 4878 int count = 0;
3b22753a
L		 4879
4880 /* Check to see if we need a large readonly segment. */
4881 s = bfd_get_section_by_name (abfd, ".lrodata");
4882 if (s && (s->flags & SEC_LOAD))
4883 count++;
4884
4885 /* Check to see if we need a large data segment. Since .lbss sections
4886 is placed right after the .bss section, there should be no need for
4887 a large data segment just because of .lbss. */
4888 s = bfd_get_section_by_name (abfd, ".ldata");
4889 if (s && (s->flags & SEC_LOAD))
4890 count++;
4891
4892 return count;
4893}
4894
c543bf9a
L		 4895/* Return TRUE iff relocations for INPUT are compatible with OUTPUT. */
4896
4897static bfd_boolean
4898elf_x86_64_relocs_compatible (const bfd_target *input,
4899 const bfd_target *output)
4900{
4901 return ((xvec_get_elf_backend_data (input)->s->elfclass
4902 == xvec_get_elf_backend_data (output)->s->elfclass)
4903 && _bfd_elf_relocs_compatible (input, output));
4904}
4905
38b12349
L		 4906/* Set up x86-64 GNU properties. Return the first relocatable ELF input
4907 with GNU properties if found. Otherwise, return NULL. */
4908
4909static bfd *
4910elf_x86_64_link_setup_gnu_properties (struct bfd_link_info *info)
4911{
1de031c8 4912 struct elf_x86_init_table init_table;
ee2fdd6f 4913
78984959
L		 4914 if ((int) R_X86_64_standard >= (int) R_X86_64_converted_reloc_bit
4915 || (int) R_X86_64_max <= (int) R_X86_64_converted_reloc_bit
4916 || ((int) (R_X86_64_GNU_VTINHERIT | R_X86_64_converted_reloc_bit)
4917 != (int) R_X86_64_GNU_VTINHERIT)
4918 || ((int) (R_X86_64_GNU_VTENTRY | R_X86_64_converted_reloc_bit)
4919 != (int) R_X86_64_GNU_VTENTRY))
4920 abort ();
4921
851b6fa1
L		 4922 /* This is unused for x86-64. */
4923 init_table.plt0_pad_byte = 0x90;
4924
3b4c3844 4925 if (get_elf_x86_backend_data (info->output_bfd)->target_os != is_nacl)
73784fa5 4926 {
a6798bab 4927 if (info->bndplt)
ee2fdd6f 4928 {
1de031c8
L		 4929 init_table.lazy_plt = &elf_x86_64_lazy_bnd_plt;
4930 init_table.non_lazy_plt = &elf_x86_64_non_lazy_bnd_plt;
ee2fdd6f
L		 4931 }
4932 else
4933 {
1de031c8
L		 4934 init_table.lazy_plt = &elf_x86_64_lazy_plt;
4935 init_table.non_lazy_plt = &elf_x86_64_non_lazy_plt;
ee2fdd6f 4936 }
38b12349 4937
a6798bab 4938 if (ABI_64_P (info->output_bfd))
38b12349 4939 {
1de031c8
L		 4940 init_table.lazy_ibt_plt = &elf_x86_64_lazy_ibt_plt;
4941 init_table.non_lazy_ibt_plt = &elf_x86_64_non_lazy_ibt_plt;
38b12349
L		 4942 }
4943 else
4944 {
1de031c8
L		 4945 init_table.lazy_ibt_plt = &elf_x32_lazy_ibt_plt;
4946 init_table.non_lazy_ibt_plt = &elf_x32_non_lazy_ibt_plt;
38b12349 4947 }
38b12349
L		 4948 }
4949 else
4950 {
1de031c8
L		 4951 init_table.lazy_plt = &elf_x86_64_nacl_plt;
4952 init_table.non_lazy_plt = NULL;
4953 init_table.lazy_ibt_plt = NULL;
4954 init_table.non_lazy_ibt_plt = NULL;
38b12349
L		 4955 }
4956
7a382c1c
L		 4957 if (ABI_64_P (info->output_bfd))
4958 {
1de031c8
L		 4959 init_table.r_info = elf64_r_info;
4960 init_table.r_sym = elf64_r_sym;
7a382c1c
L		 4961 }
4962 else
4963 {
1de031c8
L		 4964 init_table.r_info = elf32_r_info;
4965 init_table.r_sym = elf32_r_sym;
7a382c1c
L		 4966 }
4967
1de031c8 4968 return _bfd_x86_elf_link_setup_gnu_properties (info, &init_table);
38b12349
L		 4969}
4970
9a2e389a 4971static const struct bfd_elf_special_section
46bed679 4972elf_x86_64_special_sections[]=
3b22753a 4973{
0112cd26
NC		 4974 { STRING_COMMA_LEN (".gnu.linkonce.lb"), -2, SHT_NOBITS, SHF_ALLOC + SHF_WRITE + SHF_X86_64_LARGE},
4975 { STRING_COMMA_LEN (".gnu.linkonce.lr"), -2, SHT_PROGBITS, SHF_ALLOC + SHF_X86_64_LARGE},
4976 { STRING_COMMA_LEN (".gnu.linkonce.lt"), -2, SHT_PROGBITS, SHF_ALLOC + SHF_EXECINSTR + SHF_X86_64_LARGE},
07d6d2b8 4977 { STRING_COMMA_LEN (".lbss"), -2, SHT_NOBITS, SHF_ALLOC + SHF_WRITE + SHF_X86_64_LARGE},
0112cd26
NC		 4978 { STRING_COMMA_LEN (".ldata"), -2, SHT_PROGBITS, SHF_ALLOC + SHF_WRITE + SHF_X86_64_LARGE},
4979 { STRING_COMMA_LEN (".lrodata"), -2, SHT_PROGBITS, SHF_ALLOC + SHF_X86_64_LARGE},
07d6d2b8 4980 { NULL, 0, 0, 0, 0 }
3b22753a
L		 4981};
4982
6d00b590 4983#define TARGET_LITTLE_SYM x86_64_elf64_vec
70256ad8
AJ		 4984#define TARGET_LITTLE_NAME "elf64-x86-64"
4985#define ELF_ARCH bfd_arch_i386
ae95ffa6 4986#define ELF_TARGET_ID X86_64_ELF_DATA
70256ad8 4987#define ELF_MACHINE_CODE EM_X86_64
f6aec96d
L		 4988#if DEFAULT_LD_Z_SEPARATE_CODE
4989# define ELF_MAXPAGESIZE 0x1000
4990#else
4991# define ELF_MAXPAGESIZE 0x200000
4992#endif
2043964e 4993#define ELF_MINPAGESIZE 0x1000
24718e3b 4994#define ELF_COMMONPAGESIZE 0x1000
70256ad8
AJ		 4995
4996#define elf_backend_can_gc_sections 1
51b64d56 4997#define elf_backend_can_refcount 1
70256ad8
AJ		 4998#define elf_backend_want_got_plt 1
4999#define elf_backend_plt_readonly 1
5000#define elf_backend_want_plt_sym 0
5001#define elf_backend_got_header_size (GOT_ENTRY_SIZE*3)
b491616a 5002#define elf_backend_rela_normal 1
07d6d2b8 5003#define elf_backend_plt_alignment 4
f7483970 5004#define elf_backend_extern_protected_data 1
bedfd056 5005#define elf_backend_caches_rawsize 1
64f52338 5006#define elf_backend_dtrel_excludes_plt 1
5474d94f 5007#define elf_backend_want_dynrelro 1
70256ad8 5008
351f65ca 5009#define elf_info_to_howto elf_x86_64_info_to_howto
70256ad8 5010
351f65ca 5011#define bfd_elf64_bfd_reloc_type_lookup elf_x86_64_reloc_type_lookup
157090f7 5012#define bfd_elf64_bfd_reloc_name_lookup \
351f65ca 5013 elf_x86_64_reloc_name_lookup
70256ad8 5014
c543bf9a 5015#define elf_backend_relocs_compatible elf_x86_64_relocs_compatible
351f65ca 5016#define elf_backend_check_relocs elf_x86_64_check_relocs
38b12349 5017#define elf_backend_create_dynamic_sections _bfd_elf_create_dynamic_sections
351f65ca
L		 5018#define elf_backend_finish_dynamic_sections elf_x86_64_finish_dynamic_sections
5019#define elf_backend_finish_dynamic_symbol elf_x86_64_finish_dynamic_symbol
233cc9c1 5020#define elf_backend_output_arch_local_syms elf_x86_64_output_arch_local_syms
351f65ca
L		 5021#define elf_backend_grok_prstatus elf_x86_64_grok_prstatus
5022#define elf_backend_grok_psinfo elf_x86_64_grok_psinfo
8fd79e71
L		 5023#ifdef CORE_HEADER
5024#define elf_backend_write_core_note elf_x86_64_write_core_note
5025#endif
351f65ca
L		 5026#define elf_backend_reloc_type_class elf_x86_64_reloc_type_class
5027#define elf_backend_relocate_section elf_x86_64_relocate_section
74541ad4 5028#define elf_backend_init_index_section _bfd_elf_init_1_index_section
407443a3 5029#define elf_backend_object_p elf64_x86_64_elf_object_p
0ff2b86e 5030#define bfd_elf64_get_synthetic_symtab elf_x86_64_get_synthetic_symtab
8d88c4ca 5031
d2b2c203 5032#define elf_backend_section_from_shdr \
351f65ca 5033 elf_x86_64_section_from_shdr
d2b2c203 5034
3b22753a 5035#define elf_backend_section_from_bfd_section \
351f65ca 5036 elf_x86_64_elf_section_from_bfd_section
3b22753a 5037#define elf_backend_add_symbol_hook \
351f65ca 5038 elf_x86_64_add_symbol_hook
3b22753a 5039#define elf_backend_symbol_processing \
351f65ca 5040 elf_x86_64_symbol_processing
3b22753a 5041#define elf_backend_common_section_index \
351f65ca 5042 elf_x86_64_common_section_index
3b22753a 5043#define elf_backend_common_section \
351f65ca 5044 elf_x86_64_common_section
3b22753a 5045#define elf_backend_common_definition \
351f65ca 5046 elf_x86_64_common_definition
3b22753a 5047#define elf_backend_merge_symbol \
351f65ca 5048 elf_x86_64_merge_symbol
3b22753a 5049#define elf_backend_special_sections \
351f65ca 5050 elf_x86_64_special_sections
3b22753a 5051#define elf_backend_additional_program_headers \
351f65ca 5052 elf_x86_64_additional_program_headers
38b12349 5053#define elf_backend_setup_gnu_properties \
9f857535
L		 5054 elf_x86_64_link_setup_gnu_properties
5055#define elf_backend_hide_symbol \
5056 _bfd_x86_elf_hide_symbol
3b22753a 5057
8f56f7a2
L		 5058#undef elf64_bed
5059#define elf64_bed elf64_x86_64_bed
5060
8d88c4ca 5061#include "elf64-target.h"
9d7cbccd 5062
6036f486
ES		 5063/* CloudABI support. */
5064
07d6d2b8 5065#undef TARGET_LITTLE_SYM
6036f486 5066#define TARGET_LITTLE_SYM x86_64_elf64_cloudabi_vec
07d6d2b8 5067#undef TARGET_LITTLE_NAME
6036f486
ES		 5068#define TARGET_LITTLE_NAME "elf64-x86-64-cloudabi"
5069
5070#undef ELF_OSABI
5071#define ELF_OSABI ELFOSABI_CLOUDABI
5072
07d6d2b8 5073#undef elf64_bed
6036f486
ES		 5074#define elf64_bed elf64_x86_64_cloudabi_bed
5075
5076#include "elf64-target.h"
5077
9d7cbccd
NC		 5078/* FreeBSD support. */
5079
07d6d2b8 5080#undef TARGET_LITTLE_SYM
6d00b590 5081#define TARGET_LITTLE_SYM x86_64_elf64_fbsd_vec
07d6d2b8 5082#undef TARGET_LITTLE_NAME
9d7cbccd
NC		 5083#define TARGET_LITTLE_NAME "elf64-x86-64-freebsd"
5084
d1036acb
L		 5085#undef ELF_OSABI
5086#define ELF_OSABI ELFOSABI_FREEBSD
9d7cbccd 5087
07d6d2b8 5088#undef elf64_bed
9d7cbccd
NC		 5089#define elf64_bed elf64_x86_64_fbsd_bed
5090
5091#include "elf64-target.h"
8a9036a4 5092
a6cc6b3b
RO		 5093/* Solaris 2 support. */
5094
5095#undef TARGET_LITTLE_SYM
6d00b590 5096#define TARGET_LITTLE_SYM x86_64_elf64_sol2_vec
a6cc6b3b
RO		 5097#undef TARGET_LITTLE_NAME
5098#define TARGET_LITTLE_NAME "elf64-x86-64-sol2"
5099
3b4c3844
L		 5100static const struct elf_x86_backend_data elf_x86_64_solaris_arch_bed =
5101 {
5102 is_solaris /* os */
5103 };
5104
5105#undef elf_backend_arch_data
5106#define elf_backend_arch_data &elf_x86_64_solaris_arch_bed
5107
a6cc6b3b
RO		 5108/* Restore default: we cannot use ELFOSABI_SOLARIS, otherwise ELFOSABI_NONE
5109 objects won't be recognized. */
5110#undef ELF_OSABI
5111
5112#undef elf64_bed
5113#define elf64_bed elf64_x86_64_sol2_bed
5114
7dc98aea
RO		 5115/* The 64-bit static TLS arena size is rounded to the nearest 16-byte
5116 boundary. */
84865015 5117#undef elf_backend_static_tls_alignment
7dc98aea
RO		 5118#define elf_backend_static_tls_alignment 16
5119
a6cc6b3b
RO		 5120/* The Solaris 2 ABI requires a plt symbol on all platforms.
5121
5122 Cf. Linker and Libraries Guide, Ch. 2, Link-Editor, Generating the Output
5123 File, p.63. */
84865015 5124#undef elf_backend_want_plt_sym
a6cc6b3b
RO		 5125#define elf_backend_want_plt_sym 1
5126
84865015
NC		 5127#undef elf_backend_strtab_flags
5128#define elf_backend_strtab_flags SHF_STRINGS
5129
5130static bfd_boolean
5522f910
NC		 5131elf64_x86_64_copy_solaris_special_section_fields (const bfd *ibfd ATTRIBUTE_UNUSED,
5132 bfd *obfd ATTRIBUTE_UNUSED,
5133 const Elf_Internal_Shdr *isection ATTRIBUTE_UNUSED,
5134 Elf_Internal_Shdr *osection ATTRIBUTE_UNUSED)
84865015
NC		 5135{
5136 /* PR 19938: FIXME: Need to add code for setting the sh_info
5137 and sh_link fields of Solaris specific section types. */
5138 return FALSE;
5139}
5140
5522f910
NC		 5141#undef elf_backend_copy_special_section_fields
5142#define elf_backend_copy_special_section_fields elf64_x86_64_copy_solaris_special_section_fields
84865015 5143
a6cc6b3b
RO		 5144#include "elf64-target.h"
5145
8059fb19
RM		 5146/* Native Client support. */
5147
64b384e1
RM		 5148static bfd_boolean
5149elf64_x86_64_nacl_elf_object_p (bfd *abfd)
5150{
5151 /* Set the right machine number for a NaCl x86-64 ELF64 file. */
5152 bfd_default_set_arch_mach (abfd, bfd_arch_i386, bfd_mach_x86_64_nacl);
5153 return TRUE;
5154}
5155
8059fb19 5156#undef TARGET_LITTLE_SYM
6d00b590 5157#define TARGET_LITTLE_SYM x86_64_elf64_nacl_vec
8059fb19
RM		 5158#undef TARGET_LITTLE_NAME
5159#define TARGET_LITTLE_NAME "elf64-x86-64-nacl"
5160#undef elf64_bed
5161#define elf64_bed elf64_x86_64_nacl_bed
5162
5163#undef ELF_MAXPAGESIZE
5164#undef ELF_MINPAGESIZE
5165#undef ELF_COMMONPAGESIZE
5166#define ELF_MAXPAGESIZE 0x10000
5167#define ELF_MINPAGESIZE 0x10000
5168#define ELF_COMMONPAGESIZE 0x10000
5169
5170/* Restore defaults. */
5171#undef ELF_OSABI
5172#undef elf_backend_static_tls_alignment
5173#undef elf_backend_want_plt_sym
5174#define elf_backend_want_plt_sym 0
84865015 5175#undef elf_backend_strtab_flags
5522f910 5176#undef elf_backend_copy_special_section_fields
8059fb19
RM		 5177
5178/* NaCl uses substantially different PLT entries for the same effects. */
5179
5180#undef elf_backend_plt_alignment
5181#define elf_backend_plt_alignment 5
5182#define NACL_PLT_ENTRY_SIZE 64
5183#define NACLMASK 0xe0 /* 32-byte alignment mask. */
5184
5185static const bfd_byte elf_x86_64_nacl_plt0_entry[NACL_PLT_ENTRY_SIZE] =
5186 {
07d6d2b8 5187 0xff, 0x35, 8, 0, 0, 0, /* pushq GOT+8(%rip) */
8059fb19 5188 0x4c, 0x8b, 0x1d, 16, 0, 0, 0, /* mov GOT+16(%rip), %r11 */
07d6d2b8
AM		 5189 0x41, 0x83, 0xe3, NACLMASK, /* and $-32, %r11d */
5190 0x4d, 0x01, 0xfb, /* add %r15, %r11 */
5191 0x41, 0xff, 0xe3, /* jmpq *%r11 */
8059fb19 5192
ea2d813e 5193 /* 9-byte nop sequence to pad out to the next 32-byte boundary. */
70cc877f 5194 0x66, 0x0f, 0x1f, 0x84, 0, 0, 0, 0, 0, /* nopw 0x0(%rax,%rax,1) */
ea2d813e
RM		 5195
5196 /* 32 bytes of nop to pad out to the standard size. */
3ddf1bdd 5197 0x66, 0x66, 0x66, 0x66, 0x66, 0x66, /* excess data16 prefixes */
8059fb19 5198 0x2e, 0x0f, 0x1f, 0x84, 0, 0, 0, 0, 0, /* nopw %cs:0x0(%rax,%rax,1) */
3ddf1bdd 5199 0x66, 0x66, 0x66, 0x66, 0x66, 0x66, /* excess data16 prefixes */
8059fb19 5200 0x2e, 0x0f, 0x1f, 0x84, 0, 0, 0, 0, 0, /* nopw %cs:0x0(%rax,%rax,1) */
07d6d2b8
AM		 5201 0x66, /* excess data16 prefix */
5202 0x90 /* nop */
8059fb19
RM		 5203 };
5204
5205static const bfd_byte elf_x86_64_nacl_plt_entry[NACL_PLT_ENTRY_SIZE] =
5206 {
5207 0x4c, 0x8b, 0x1d, 0, 0, 0, 0, /* mov name@GOTPCREL(%rip),%r11 */
07d6d2b8
AM		 5208 0x41, 0x83, 0xe3, NACLMASK, /* and $-32, %r11d */
5209 0x4d, 0x01, 0xfb, /* add %r15, %r11 */
5210 0x41, 0xff, 0xe3, /* jmpq *%r11 */
8059fb19
RM		 5211
5212 /* 15-byte nop sequence to pad out to the next 32-byte boundary. */
3ddf1bdd 5213 0x66, 0x66, 0x66, 0x66, 0x66, 0x66, /* excess data16 prefixes */
8059fb19
RM		 5214 0x2e, 0x0f, 0x1f, 0x84, 0, 0, 0, 0, 0, /* nopw %cs:0x0(%rax,%rax,1) */
5215
5216 /* Lazy GOT entries point here (32-byte aligned). */
07d6d2b8
AM		 5217 0x68, /* pushq immediate */
5218 0, 0, 0, 0, /* replaced with index into relocation table. */
5219 0xe9, /* jmp relative */
5220 0, 0, 0, 0, /* replaced with offset to start of .plt0. */
8059fb19 5221
07d6d2b8 5222 /* 22 bytes of nop to pad out to the standard size. */
3ddf1bdd 5223 0x66, 0x66, 0x66, 0x66, 0x66, 0x66, /* excess data16 prefixes */
8059fb19 5224 0x2e, 0x0f, 0x1f, 0x84, 0, 0, 0, 0, 0, /* nopw %cs:0x0(%rax,%rax,1) */
07d6d2b8 5225 0x0f, 0x1f, 0x80, 0, 0, 0, 0, /* nopl 0x0(%rax) */
8059fb19
RM		 5226 };
5227
5228/* .eh_frame covering the .plt section. */
5229
5230static const bfd_byte elf_x86_64_nacl_eh_frame_plt[] =
5231 {
07d6d2b8
AM		 5232#if (PLT_CIE_LENGTH != 20 \
5233 || PLT_FDE_LENGTH != 36 \
5234 || PLT_FDE_START_OFFSET != 4 + PLT_CIE_LENGTH + 8 \
8059fb19 5235 || PLT_FDE_LEN_OFFSET != 4 + PLT_CIE_LENGTH + 12)
851b6fa1 5236# error "Need elf_x86_backend_data parameters for eh_frame_plt offsets!"
8059fb19
RM		 5237#endif
5238 PLT_CIE_LENGTH, 0, 0, 0, /* CIE length */
5239 0, 0, 0, 0, /* CIE ID */
5240 1, /* CIE version */
07d6d2b8 5241 'z', 'R', 0, /* Augmentation string */
8059fb19 5242 1, /* Code alignment factor */
07d6d2b8 5243 0x78, /* Data alignment factor */
8059fb19
RM		 5244 16, /* Return address column */
5245 1, /* Augmentation size */
5246 DW_EH_PE_pcrel | DW_EH_PE_sdata4, /* FDE encoding */
5247 DW_CFA_def_cfa, 7, 8, /* DW_CFA_def_cfa: r7 (rsp) ofs 8 */
5248 DW_CFA_offset + 16, 1, /* DW_CFA_offset: r16 (rip) at cfa-8 */
5249 DW_CFA_nop, DW_CFA_nop,
5250
5251 PLT_FDE_LENGTH, 0, 0, 0, /* FDE length */
5252 PLT_CIE_LENGTH + 8, 0, 0, 0,/* CIE pointer */
5253 0, 0, 0, 0, /* R_X86_64_PC32 .plt goes here */
5254 0, 0, 0, 0, /* .plt size goes here */
5255 0, /* Augmentation size */
5256 DW_CFA_def_cfa_offset, 16, /* DW_CFA_def_cfa_offset: 16 */
5257 DW_CFA_advance_loc + 6, /* DW_CFA_advance_loc: 6 to __PLT__+6 */
5258 DW_CFA_def_cfa_offset, 24, /* DW_CFA_def_cfa_offset: 24 */
5259 DW_CFA_advance_loc + 58, /* DW_CFA_advance_loc: 58 to __PLT__+64 */
5260 DW_CFA_def_cfa_expression, /* DW_CFA_def_cfa_expression */
5261 13, /* Block length */
5262 DW_OP_breg7, 8, /* DW_OP_breg7 (rsp): 8 */
5263 DW_OP_breg16, 0, /* DW_OP_breg16 (rip): 0 */
5264 DW_OP_const1u, 63, DW_OP_and, DW_OP_const1u, 37, DW_OP_ge,
5265 DW_OP_lit3, DW_OP_shl, DW_OP_plus,
5266 DW_CFA_nop, DW_CFA_nop
5267 };
5268
765e526c 5269static const struct elf_x86_lazy_plt_layout elf_x86_64_nacl_plt =
8059fb19 5270 {
07d6d2b8
AM		 5271 elf_x86_64_nacl_plt0_entry, /* plt0_entry */
5272 NACL_PLT_ENTRY_SIZE, /* plt0_entry_size */
5273 elf_x86_64_nacl_plt_entry, /* plt_entry */
5274 NACL_PLT_ENTRY_SIZE, /* plt_entry_size */
92e68c1d
L		 5275 elf_x86_64_nacl_plt0_entry, /* plt_tlsdesc_entry */
5276 NACL_PLT_ENTRY_SIZE, /* plt_tlsdesc_entry_size */
5277 2, /* plt_tlsdesc_got1_offset */
5278 9, /* plt_tlsdesc_got2_offset */
5279 6, /* plt_tlsdesc_got1_insn_end */
5280 13, /* plt_tlsdesc_got2_insn_end */
07d6d2b8
AM		 5281 2, /* plt0_got1_offset */
5282 9, /* plt0_got2_offset */
5283 13, /* plt0_got2_insn_end */
5284 3, /* plt_got_offset */
5285 33, /* plt_reloc_offset */
5286 38, /* plt_plt_offset */
5287 7, /* plt_got_insn_size */
5288 42, /* plt_plt_insn_end */
5289 32, /* plt_lazy_offset */
5290 elf_x86_64_nacl_plt0_entry, /* pic_plt0_entry */
5291 elf_x86_64_nacl_plt_entry, /* pic_plt_entry */
5292 elf_x86_64_nacl_eh_frame_plt, /* eh_frame_plt */
38b12349
L		 5293 sizeof (elf_x86_64_nacl_eh_frame_plt) /* eh_frame_plt_size */
5294 };
5295
851b6fa1 5296static const struct elf_x86_backend_data elf_x86_64_nacl_arch_bed =
38b12349 5297 {
07d6d2b8 5298 is_nacl /* os */
8059fb19
RM		 5299 };
5300
5301#undef elf_backend_arch_data
5302#define elf_backend_arch_data &elf_x86_64_nacl_arch_bed
5303
64b384e1
RM		 5304#undef elf_backend_object_p
5305#define elf_backend_object_p elf64_x86_64_nacl_elf_object_p
5a68afcf
RM		 5306#undef elf_backend_modify_segment_map
5307#define elf_backend_modify_segment_map nacl_modify_segment_map
5308#undef elf_backend_modify_program_headers
5309#define elf_backend_modify_program_headers nacl_modify_program_headers
887badb3
RM		 5310#undef elf_backend_final_write_processing
5311#define elf_backend_final_write_processing nacl_final_write_processing
5a68afcf 5312
8059fb19
RM		 5313#include "elf64-target.h"
5314
5315/* Native Client x32 support. */
5316
64b384e1
RM		 5317static bfd_boolean
5318elf32_x86_64_nacl_elf_object_p (bfd *abfd)
5319{
5320 /* Set the right machine number for a NaCl x86-64 ELF32 file. */
5321 bfd_default_set_arch_mach (abfd, bfd_arch_i386, bfd_mach_x64_32_nacl);
5322 return TRUE;
5323}
5324
07d6d2b8 5325#undef TARGET_LITTLE_SYM
6d00b590 5326#define TARGET_LITTLE_SYM x86_64_elf32_nacl_vec
07d6d2b8 5327#undef TARGET_LITTLE_NAME
8059fb19
RM		 5328#define TARGET_LITTLE_NAME "elf32-x86-64-nacl"
5329#undef elf32_bed
5330#define elf32_bed elf32_x86_64_nacl_bed
5331
8059fb19
RM		 5332#define bfd_elf32_bfd_reloc_type_lookup \
5333 elf_x86_64_reloc_type_lookup
5334#define bfd_elf32_bfd_reloc_name_lookup \
5335 elf_x86_64_reloc_name_lookup
b7365e5d
L		 5336#define bfd_elf32_get_synthetic_symtab \
5337 elf_x86_64_get_synthetic_symtab
8059fb19
RM		 5338
5339#undef elf_backend_object_p
5340#define elf_backend_object_p \
64b384e1 5341 elf32_x86_64_nacl_elf_object_p
8059fb19
RM		 5342
5343#undef elf_backend_bfd_from_remote_memory
5344#define elf_backend_bfd_from_remote_memory \
5345 _bfd_elf32_bfd_from_remote_memory
5346
5347#undef elf_backend_size_info
5348#define elf_backend_size_info \
5349 _bfd_elf32_size_info
5350
8f56f7a2
L		 5351#undef elf32_bed
5352#define elf32_bed elf32_x86_64_bed
5353
8059fb19
RM		 5354#include "elf32-target.h"
5355
5356/* Restore defaults. */
5a68afcf 5357#undef elf_backend_object_p
8059fb19 5358#define elf_backend_object_p elf64_x86_64_elf_object_p
5a68afcf
RM		 5359#undef elf_backend_bfd_from_remote_memory
5360#undef elf_backend_size_info
5361#undef elf_backend_modify_segment_map
5362#undef elf_backend_modify_program_headers
887badb3 5363#undef elf_backend_final_write_processing
8059fb19 5364
8a9036a4
L		 5365/* Intel L1OM support. */
5366
5367static bfd_boolean
5368elf64_l1om_elf_object_p (bfd *abfd)
5369{
5370 /* Set the right machine number for an L1OM elf64 file. */
5371 bfd_default_set_arch_mach (abfd, bfd_arch_l1om, bfd_mach_l1om);
5372 return TRUE;
5373}
5374
5375#undef TARGET_LITTLE_SYM
6d00b590 5376#define TARGET_LITTLE_SYM l1om_elf64_vec
8a9036a4
L		 5377#undef TARGET_LITTLE_NAME
5378#define TARGET_LITTLE_NAME "elf64-l1om"
5379#undef ELF_ARCH
5380#define ELF_ARCH bfd_arch_l1om
5381
5382#undef ELF_MACHINE_CODE
5383#define ELF_MACHINE_CODE EM_L1OM
5384
5385#undef ELF_OSABI
5386
5387#undef elf64_bed
5388#define elf64_bed elf64_l1om_bed
5389
5390#undef elf_backend_object_p
5391#define elf_backend_object_p elf64_l1om_elf_object_p
5392
8059fb19
RM		 5393/* Restore defaults. */
5394#undef ELF_MAXPAGESIZE
5395#undef ELF_MINPAGESIZE
5396#undef ELF_COMMONPAGESIZE
f6aec96d
L		 5397#if DEFAULT_LD_Z_SEPARATE_CODE
5398# define ELF_MAXPAGESIZE 0x1000
5399#else
5400# define ELF_MAXPAGESIZE 0x200000
5401#endif
8059fb19
RM		 5402#define ELF_MINPAGESIZE 0x1000
5403#define ELF_COMMONPAGESIZE 0x1000
5404#undef elf_backend_plt_alignment
5405#define elf_backend_plt_alignment 4
5406#undef elf_backend_arch_data
5407#define elf_backend_arch_data &elf_x86_64_arch_bed
1a0c107f 5408
8a9036a4
L		 5409#include "elf64-target.h"
5410
5411/* FreeBSD L1OM support. */
5412
5413#undef TARGET_LITTLE_SYM
6d00b590 5414#define TARGET_LITTLE_SYM l1om_elf64_fbsd_vec
8a9036a4
L		 5415#undef TARGET_LITTLE_NAME
5416#define TARGET_LITTLE_NAME "elf64-l1om-freebsd"
5417
5418#undef ELF_OSABI
5419#define ELF_OSABI ELFOSABI_FREEBSD
5420
5421#undef elf64_bed
5422#define elf64_bed elf64_l1om_fbsd_bed
5423
8a9036a4 5424#include "elf64-target.h"
351f65ca 5425
7a9068fe
L		 5426/* Intel K1OM support. */
5427
5428static bfd_boolean
5429elf64_k1om_elf_object_p (bfd *abfd)
5430{
5431 /* Set the right machine number for an K1OM elf64 file. */
5432 bfd_default_set_arch_mach (abfd, bfd_arch_k1om, bfd_mach_k1om);
5433 return TRUE;
5434}
5435
5436#undef TARGET_LITTLE_SYM
6d00b590 5437#define TARGET_LITTLE_SYM k1om_elf64_vec
7a9068fe
L		 5438#undef TARGET_LITTLE_NAME
5439#define TARGET_LITTLE_NAME "elf64-k1om"
5440#undef ELF_ARCH
5441#define ELF_ARCH bfd_arch_k1om
5442
5443#undef ELF_MACHINE_CODE
5444#define ELF_MACHINE_CODE EM_K1OM
5445
5446#undef ELF_OSABI
5447
5448#undef elf64_bed
5449#define elf64_bed elf64_k1om_bed
5450
5451#undef elf_backend_object_p
5452#define elf_backend_object_p elf64_k1om_elf_object_p
5453
5454#undef elf_backend_static_tls_alignment
5455
5456#undef elf_backend_want_plt_sym
5457#define elf_backend_want_plt_sym 0
5458
5459#include "elf64-target.h"
5460
5461/* FreeBSD K1OM support. */
5462
5463#undef TARGET_LITTLE_SYM
6d00b590 5464#define TARGET_LITTLE_SYM k1om_elf64_fbsd_vec
7a9068fe
L		 5465#undef TARGET_LITTLE_NAME
5466#define TARGET_LITTLE_NAME "elf64-k1om-freebsd"
5467
5468#undef ELF_OSABI
5469#define ELF_OSABI ELFOSABI_FREEBSD
5470
5471#undef elf64_bed
5472#define elf64_bed elf64_k1om_fbsd_bed
5473
5474#include "elf64-target.h"
5475
351f65ca
L		 5476/* 32bit x86-64 support. */
5477
351f65ca 5478#undef TARGET_LITTLE_SYM
6d00b590 5479#define TARGET_LITTLE_SYM x86_64_elf32_vec
351f65ca
L		 5480#undef TARGET_LITTLE_NAME
5481#define TARGET_LITTLE_NAME "elf32-x86-64"
8059fb19 5482#undef elf32_bed
351f65ca
L		 5483
5484#undef ELF_ARCH
5485#define ELF_ARCH bfd_arch_i386
5486
5487#undef ELF_MACHINE_CODE
5488#define ELF_MACHINE_CODE EM_X86_64
5489
351f65ca
L		 5490#undef ELF_OSABI
5491
351f65ca
L		 5492#undef elf_backend_object_p
5493#define elf_backend_object_p \
5494 elf32_x86_64_elf_object_p
5495
5496#undef elf_backend_bfd_from_remote_memory
5497#define elf_backend_bfd_from_remote_memory \
5498 _bfd_elf32_bfd_from_remote_memory
5499
5500#undef elf_backend_size_info
5501#define elf_backend_size_info \
5502 _bfd_elf32_size_info
5503
5504#include "elf32-target.h"
GDB Binutils - Deliverables
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