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[deliverable/binutils-gdb.git] / bfd / elf64-x86-64.c
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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 */
871b3ab2 285 _bfd_error_handler (_("%pB: invalid relocation type %d"),
4eca0228 286 abfd, (int) r_type);
67a4f2b7
AO		 287 r_type = R_X86_64_NONE;
288 }
289 i = r_type;
290 }
291 else
292 i = r_type - (unsigned int) R_X86_64_vt_offset;
293 BFD_ASSERT (x86_64_elf_howto_table[i].type == r_type);
294 return &x86_64_elf_howto_table[i];
295}
8d88c4ca
NC		 296
297/* Given a BFD reloc type, return a HOWTO structure. */
298static reloc_howto_type *
351f65ca
L		 299elf_x86_64_reloc_type_lookup (bfd *abfd,
300 bfd_reloc_code_real_type code)
8d88c4ca
NC		 301{
302 unsigned int i;
27482721 303
8d88c4ca
NC		 304 for (i = 0; i < sizeof (x86_64_reloc_map) / sizeof (struct elf_reloc_map);
305 i++)
306 {
307 if (x86_64_reloc_map[i].bfd_reloc_val == code)
351f65ca
L		 308 return elf_x86_64_rtype_to_howto (abfd,
309 x86_64_reloc_map[i].elf_reloc_val);
8d88c4ca 310 }
5860e3f8 311 return NULL;
8d88c4ca
NC		 312}
313
157090f7 314static reloc_howto_type *
d7921315 315elf_x86_64_reloc_name_lookup (bfd *abfd,
351f65ca 316 const char *r_name)
157090f7
AM		 317{
318 unsigned int i;
319
d7921315
L		 320 if (!ABI_64_P (abfd) && strcasecmp (r_name, "R_X86_64_32") == 0)
321 {
322 /* Get x32 R_X86_64_32. */
323 reloc_howto_type *reloc
324 = &x86_64_elf_howto_table[ARRAY_SIZE (x86_64_elf_howto_table) - 1];
325 BFD_ASSERT (reloc->type == (unsigned int) R_X86_64_32);
326 return reloc;
327 }
328
329 for (i = 0; i < ARRAY_SIZE (x86_64_elf_howto_table); i++)
157090f7
AM		 330 if (x86_64_elf_howto_table[i].name != NULL
331 && strcasecmp (x86_64_elf_howto_table[i].name, r_name) == 0)
332 return &x86_64_elf_howto_table[i];
333
334 return NULL;
335}
336
8d88c4ca 337/* Given an x86_64 ELF reloc type, fill in an arelent structure. */
8da6118f 338
8d88c4ca 339static void
351f65ca
L		 340elf_x86_64_info_to_howto (bfd *abfd ATTRIBUTE_UNUSED, arelent *cache_ptr,
341 Elf_Internal_Rela *dst)
8d88c4ca 342{
67a4f2b7 343 unsigned r_type;
8d88c4ca 344
351f65ca 345 r_type = ELF32_R_TYPE (dst->r_info);
78984959
L		 346 if (r_type != (unsigned int) R_X86_64_GNU_VTINHERIT
347 && r_type != (unsigned int) R_X86_64_GNU_VTENTRY)
348 r_type &= ~R_X86_64_converted_reloc_bit;
351f65ca 349 cache_ptr->howto = elf_x86_64_rtype_to_howto (abfd, r_type);
262c0a87
NC		 350
351 BFD_ASSERT (r_type == cache_ptr->howto->type || cache_ptr->howto->type == R_X86_64_NONE);
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
442static char *
443elf_x86_64_write_core_note (bfd *abfd, char *buf, int *bufsiz,
444 int note_type, ...)
445{
446 const struct elf_backend_data *bed = get_elf_backend_data (abfd);
8fd79e71
L		 447 va_list ap;
448 const char *fname, *psargs;
449 long pid;
450 int cursig;
451 const void *gregs;
452
453 switch (note_type)
454 {
455 default:
456 return NULL;
457
458 case NT_PRPSINFO:
459 va_start (ap, note_type);
460 fname = va_arg (ap, const char *);
461 psargs = va_arg (ap, const char *);
462 va_end (ap);
463
464 if (bed->s->elfclass == ELFCLASS32)
465 {
466 prpsinfo32_t data;
467 memset (&data, 0, sizeof (data));
468 strncpy (data.pr_fname, fname, sizeof (data.pr_fname));
469 strncpy (data.pr_psargs, psargs, sizeof (data.pr_psargs));
e85c6a70
JK		 470 return elfcore_write_note (abfd, buf, bufsiz, "CORE", note_type,
471 &data, sizeof (data));
8fd79e71
L		 472 }
473 else
474 {
b1bd052d 475 prpsinfo64_t data;
8fd79e71
L		 476 memset (&data, 0, sizeof (data));
477 strncpy (data.pr_fname, fname, sizeof (data.pr_fname));
478 strncpy (data.pr_psargs, psargs, sizeof (data.pr_psargs));
e85c6a70
JK		 479 return elfcore_write_note (abfd, buf, bufsiz, "CORE", note_type,
480 &data, sizeof (data));
8fd79e71 481 }
e85c6a70 482 /* NOTREACHED */
8fd79e71
L		 483
484 case NT_PRSTATUS:
485 va_start (ap, note_type);
486 pid = va_arg (ap, long);
487 cursig = va_arg (ap, int);
488 gregs = va_arg (ap, const void *);
489 va_end (ap);
490
491 if (bed->s->elfclass == ELFCLASS32)
492 {
493 if (bed->elf_machine_code == EM_X86_64)
494 {
495 prstatusx32_t prstat;
496 memset (&prstat, 0, sizeof (prstat));
497 prstat.pr_pid = pid;
498 prstat.pr_cursig = cursig;
499 memcpy (&prstat.pr_reg, gregs, sizeof (prstat.pr_reg));
e85c6a70
JK		 500 return elfcore_write_note (abfd, buf, bufsiz, "CORE", note_type,
501 &prstat, sizeof (prstat));
8fd79e71
L		 502 }
503 else
504 {
505 prstatus32_t prstat;
506 memset (&prstat, 0, sizeof (prstat));
507 prstat.pr_pid = pid;
508 prstat.pr_cursig = cursig;
509 memcpy (&prstat.pr_reg, gregs, sizeof (prstat.pr_reg));
e85c6a70
JK		 510 return elfcore_write_note (abfd, buf, bufsiz, "CORE", note_type,
511 &prstat, sizeof (prstat));
8fd79e71
L		 512 }
513 }
514 else
515 {
b1bd052d 516 prstatus64_t prstat;
8fd79e71
L		 517 memset (&prstat, 0, sizeof (prstat));
518 prstat.pr_pid = pid;
519 prstat.pr_cursig = cursig;
520 memcpy (&prstat.pr_reg, gregs, sizeof (prstat.pr_reg));
e85c6a70
JK		 521 return elfcore_write_note (abfd, buf, bufsiz, "CORE", note_type,
522 &prstat, sizeof (prstat));
8fd79e71 523 }
8fd79e71 524 }
e85c6a70 525 /* NOTREACHED */
8fd79e71
L		 526}
527#endif
3bab7989 528\f
407443a3 529/* Functions for the x86-64 ELF linker. */
70256ad8 530
70256ad8
AJ		 531/* The size in bytes of an entry in the global offset table. */
532
533#define GOT_ENTRY_SIZE 8
8d88c4ca 534
38b12349 535/* The size in bytes of an entry in the lazy procedure linkage table. */
8d88c4ca 536
38b12349 537#define LAZY_PLT_ENTRY_SIZE 16
70256ad8 538
38b12349
L		 539/* The size in bytes of an entry in the non-lazy procedure linkage
540 table. */
70256ad8 541
38b12349
L		 542#define NON_LAZY_PLT_ENTRY_SIZE 8
543
544/* The first entry in a lazy procedure linkage table looks like this.
545 See the SVR4 ABI i386 supplement and the x86-64 ABI to see how this
546 works. */
547
548static const bfd_byte elf_x86_64_lazy_plt0_entry[LAZY_PLT_ENTRY_SIZE] =
70256ad8 549{
653165cc
AJ		 550 0xff, 0x35, 8, 0, 0, 0, /* pushq GOT+8(%rip) */
551 0xff, 0x25, 16, 0, 0, 0, /* jmpq *GOT+16(%rip) */
10efb593 552 0x0f, 0x1f, 0x40, 0x00 /* nopl 0(%rax) */
70256ad8
AJ		 553};
554
38b12349 555/* Subsequent entries in a lazy procedure linkage table look like this. */
70256ad8 556
38b12349 557static const bfd_byte elf_x86_64_lazy_plt_entry[LAZY_PLT_ENTRY_SIZE] =
70256ad8 558{
653165cc 559 0xff, 0x25, /* jmpq *name@GOTPC(%rip) */
407443a3 560 0, 0, 0, 0, /* replaced with offset to this symbol in .got. */
653165cc 561 0x68, /* pushq immediate */
70256ad8
AJ		 562 0, 0, 0, 0, /* replaced with index into relocation table. */
563 0xe9, /* jmp relative */
564 0, 0, 0, 0 /* replaced with offset to start of .plt0. */
565};
566
38b12349 567/* The first entry in a lazy procedure linkage table with BND prefix
0ff2b86e
L		 568 like this. */
569
38b12349 570static const bfd_byte elf_x86_64_lazy_bnd_plt0_entry[LAZY_PLT_ENTRY_SIZE] =
0ff2b86e 571{
07d6d2b8 572 0xff, 0x35, 8, 0, 0, 0, /* pushq GOT+8(%rip) */
0ff2b86e 573 0xf2, 0xff, 0x25, 16, 0, 0, 0, /* bnd jmpq *GOT+16(%rip) */
07d6d2b8 574 0x0f, 0x1f, 0 /* nopl (%rax) */
0ff2b86e
L		 575};
576
38b12349
L		 577/* Subsequent entries for branches with BND prefx in a lazy procedure
578 linkage table look like this. */
0ff2b86e 579
38b12349 580static const bfd_byte elf_x86_64_lazy_bnd_plt_entry[LAZY_PLT_ENTRY_SIZE] =
0ff2b86e 581{
07d6d2b8
AM		 582 0x68, 0, 0, 0, 0, /* pushq immediate */
583 0xf2, 0xe9, 0, 0, 0, 0, /* bnd jmpq relative */
584 0x0f, 0x1f, 0x44, 0, 0 /* nopl 0(%rax,%rax,1) */
0ff2b86e
L		 585};
586
ee2fdd6f
L		 587/* The first entry in the IBT-enabled lazy procedure linkage table is the
588 the same as the lazy PLT with BND prefix so that bound registers are
589 preserved when control is passed to dynamic linker. Subsequent
590 entries for a IBT-enabled lazy procedure linkage table look like
591 this. */
592
593static const bfd_byte elf_x86_64_lazy_ibt_plt_entry[LAZY_PLT_ENTRY_SIZE] =
594{
07d6d2b8
AM		 595 0xf3, 0x0f, 0x1e, 0xfa, /* endbr64 */
596 0x68, 0, 0, 0, 0, /* pushq immediate */
597 0xf2, 0xe9, 0, 0, 0, 0, /* bnd jmpq relative */
598 0x90 /* nop */
ee2fdd6f
L		 599};
600
601/* The first entry in the x32 IBT-enabled lazy procedure linkage table
de194d85 602 is the same as the normal lazy PLT. Subsequent entries for an
ee2fdd6f
L		 603 x32 IBT-enabled lazy procedure linkage table look like this. */
604
605static const bfd_byte elf_x32_lazy_ibt_plt_entry[LAZY_PLT_ENTRY_SIZE] =
606{
07d6d2b8
AM		 607 0xf3, 0x0f, 0x1e, 0xfa, /* endbr64 */
608 0x68, 0, 0, 0, 0, /* pushq immediate */
609 0xe9, 0, 0, 0, 0, /* jmpq relative */
610 0x66, 0x90 /* xchg %ax,%ax */
ee2fdd6f
L		 611};
612
38b12349 613/* Entries in the non-lazey procedure linkage table look like this. */
0ff2b86e 614
38b12349 615static const bfd_byte elf_x86_64_non_lazy_plt_entry[NON_LAZY_PLT_ENTRY_SIZE] =
0ff2b86e 616{
07d6d2b8
AM		 617 0xff, 0x25, /* jmpq *name@GOTPC(%rip) */
618 0, 0, 0, 0, /* replaced with offset to this symbol in .got. */
619 0x66, 0x90 /* xchg %ax,%ax */
0ff2b86e
L		 620};
621
38b12349
L		 622/* Entries for branches with BND prefix in the non-lazey procedure
623 linkage table look like this. */
0ff2b86e 624
38b12349 625static const bfd_byte elf_x86_64_non_lazy_bnd_plt_entry[NON_LAZY_PLT_ENTRY_SIZE] =
0ff2b86e 626{
07d6d2b8
AM		 627 0xf2, 0xff, 0x25, /* bnd jmpq *name@GOTPC(%rip) */
628 0, 0, 0, 0, /* replaced with offset to this symbol in .got. */
629 0x90 /* nop */
0ff2b86e
L		 630};
631
ee2fdd6f
L		 632/* Entries for branches with IBT-enabled in the non-lazey procedure
633 linkage table look like this. They have the same size as the lazy
634 PLT entry. */
635
636static const bfd_byte elf_x86_64_non_lazy_ibt_plt_entry[LAZY_PLT_ENTRY_SIZE] =
637{
07d6d2b8
AM		 638 0xf3, 0x0f, 0x1e, 0xfa, /* endbr64 */
639 0xf2, 0xff, 0x25, /* bnd jmpq *name@GOTPC(%rip) */
ee2fdd6f 640 0, 0, 0, 0, /* replaced with offset to this symbol in .got. */
07d6d2b8 641 0x0f, 0x1f, 0x44, 0x00, 0x00 /* nopl 0x0(%rax,%rax,1) */
ee2fdd6f
L		 642};
643
644/* Entries for branches with IBT-enabled in the x32 non-lazey procedure
645 linkage table look like this. They have the same size as the lazy
646 PLT entry. */
647
648static const bfd_byte elf_x32_non_lazy_ibt_plt_entry[LAZY_PLT_ENTRY_SIZE] =
649{
07d6d2b8
AM		 650 0xf3, 0x0f, 0x1e, 0xfa, /* endbr64 */
651 0xff, 0x25, /* jmpq *name@GOTPC(%rip) */
ee2fdd6f
L		 652 0, 0, 0, 0, /* replaced with offset to this symbol in .got. */
653 0x66, 0x0f, 0x1f, 0x44, 0x00, 0x00 /* nopw 0x0(%rax,%rax,1) */
654};
655
38b12349 656/* .eh_frame covering the lazy .plt section. */
e41b3a13 657
38b12349 658static const bfd_byte elf_x86_64_eh_frame_lazy_plt[] =
e41b3a13 659{
e41b3a13
JJ		 660 PLT_CIE_LENGTH, 0, 0, 0, /* CIE length */
661 0, 0, 0, 0, /* CIE ID */
662 1, /* CIE version */
663 'z', 'R', 0, /* Augmentation string */
664 1, /* Code alignment factor */
665 0x78, /* Data alignment factor */
666 16, /* Return address column */
667 1, /* Augmentation size */
668 DW_EH_PE_pcrel | DW_EH_PE_sdata4, /* FDE encoding */
669 DW_CFA_def_cfa, 7, 8, /* DW_CFA_def_cfa: r7 (rsp) ofs 8 */
670 DW_CFA_offset + 16, 1, /* DW_CFA_offset: r16 (rip) at cfa-8 */
671 DW_CFA_nop, DW_CFA_nop,
672
673 PLT_FDE_LENGTH, 0, 0, 0, /* FDE length */
674 PLT_CIE_LENGTH + 8, 0, 0, 0, /* CIE pointer */
675 0, 0, 0, 0, /* R_X86_64_PC32 .plt goes here */
676 0, 0, 0, 0, /* .plt size goes here */
677 0, /* Augmentation size */
678 DW_CFA_def_cfa_offset, 16, /* DW_CFA_def_cfa_offset: 16 */
679 DW_CFA_advance_loc + 6, /* DW_CFA_advance_loc: 6 to __PLT__+6 */
680 DW_CFA_def_cfa_offset, 24, /* DW_CFA_def_cfa_offset: 24 */
681 DW_CFA_advance_loc + 10, /* DW_CFA_advance_loc: 10 to __PLT__+16 */
682 DW_CFA_def_cfa_expression, /* DW_CFA_def_cfa_expression */
683 11, /* Block length */
684 DW_OP_breg7, 8, /* DW_OP_breg7 (rsp): 8 */
685 DW_OP_breg16, 0, /* DW_OP_breg16 (rip): 0 */
686 DW_OP_lit15, DW_OP_and, DW_OP_lit11, DW_OP_ge,
687 DW_OP_lit3, DW_OP_shl, DW_OP_plus,
688 DW_CFA_nop, DW_CFA_nop, DW_CFA_nop, DW_CFA_nop
689};
690
38b12349 691/* .eh_frame covering the lazy BND .plt section. */
9e659176 692
38b12349 693static const bfd_byte elf_x86_64_eh_frame_lazy_bnd_plt[] =
9e659176
L		 694{
695 PLT_CIE_LENGTH, 0, 0, 0, /* CIE length */
696 0, 0, 0, 0, /* CIE ID */
697 1, /* CIE version */
698 'z', 'R', 0, /* Augmentation string */
699 1, /* Code alignment factor */
700 0x78, /* Data alignment factor */
701 16, /* Return address column */
702 1, /* Augmentation size */
703 DW_EH_PE_pcrel | DW_EH_PE_sdata4, /* FDE encoding */
704 DW_CFA_def_cfa, 7, 8, /* DW_CFA_def_cfa: r7 (rsp) ofs 8 */
705 DW_CFA_offset + 16, 1, /* DW_CFA_offset: r16 (rip) at cfa-8 */
706 DW_CFA_nop, DW_CFA_nop,
707
708 PLT_FDE_LENGTH, 0, 0, 0, /* FDE length */
709 PLT_CIE_LENGTH + 8, 0, 0, 0, /* CIE pointer */
710 0, 0, 0, 0, /* R_X86_64_PC32 .plt goes here */
711 0, 0, 0, 0, /* .plt size goes here */
712 0, /* Augmentation size */
713 DW_CFA_def_cfa_offset, 16, /* DW_CFA_def_cfa_offset: 16 */
714 DW_CFA_advance_loc + 6, /* DW_CFA_advance_loc: 6 to __PLT__+6 */
715 DW_CFA_def_cfa_offset, 24, /* DW_CFA_def_cfa_offset: 24 */
716 DW_CFA_advance_loc + 10, /* DW_CFA_advance_loc: 10 to __PLT__+16 */
717 DW_CFA_def_cfa_expression, /* DW_CFA_def_cfa_expression */
718 11, /* Block length */
719 DW_OP_breg7, 8, /* DW_OP_breg7 (rsp): 8 */
720 DW_OP_breg16, 0, /* DW_OP_breg16 (rip): 0 */
721 DW_OP_lit15, DW_OP_and, DW_OP_lit5, DW_OP_ge,
722 DW_OP_lit3, DW_OP_shl, DW_OP_plus,
723 DW_CFA_nop, DW_CFA_nop, DW_CFA_nop, DW_CFA_nop
724};
725
ee2fdd6f
L		 726/* .eh_frame covering the lazy .plt section with IBT-enabled. */
727
728static const bfd_byte elf_x86_64_eh_frame_lazy_ibt_plt[] =
729{
730 PLT_CIE_LENGTH, 0, 0, 0, /* CIE length */
731 0, 0, 0, 0, /* CIE ID */
732 1, /* CIE version */
733 'z', 'R', 0, /* Augmentation string */
734 1, /* Code alignment factor */
735 0x78, /* Data alignment factor */
736 16, /* Return address column */
737 1, /* Augmentation size */
738 DW_EH_PE_pcrel | DW_EH_PE_sdata4, /* FDE encoding */
739 DW_CFA_def_cfa, 7, 8, /* DW_CFA_def_cfa: r7 (rsp) ofs 8 */
740 DW_CFA_offset + 16, 1, /* DW_CFA_offset: r16 (rip) at cfa-8 */
741 DW_CFA_nop, DW_CFA_nop,
742
743 PLT_FDE_LENGTH, 0, 0, 0, /* FDE length */
744 PLT_CIE_LENGTH + 8, 0, 0, 0, /* CIE pointer */
745 0, 0, 0, 0, /* R_X86_64_PC32 .plt goes here */
746 0, 0, 0, 0, /* .plt size goes here */
747 0, /* Augmentation size */
748 DW_CFA_def_cfa_offset, 16, /* DW_CFA_def_cfa_offset: 16 */
749 DW_CFA_advance_loc + 6, /* DW_CFA_advance_loc: 6 to __PLT__+6 */
750 DW_CFA_def_cfa_offset, 24, /* DW_CFA_def_cfa_offset: 24 */
751 DW_CFA_advance_loc + 10, /* DW_CFA_advance_loc: 10 to __PLT__+16 */
752 DW_CFA_def_cfa_expression, /* DW_CFA_def_cfa_expression */
753 11, /* Block length */
754 DW_OP_breg7, 8, /* DW_OP_breg7 (rsp): 8 */
755 DW_OP_breg16, 0, /* DW_OP_breg16 (rip): 0 */
756 DW_OP_lit15, DW_OP_and, DW_OP_lit10, DW_OP_ge,
757 DW_OP_lit3, DW_OP_shl, DW_OP_plus,
758 DW_CFA_nop, DW_CFA_nop, DW_CFA_nop, DW_CFA_nop
759};
760
761/* .eh_frame covering the x32 lazy .plt section with IBT-enabled. */
762
763static const bfd_byte elf_x32_eh_frame_lazy_ibt_plt[] =
764{
765 PLT_CIE_LENGTH, 0, 0, 0, /* CIE length */
766 0, 0, 0, 0, /* CIE ID */
767 1, /* CIE version */
768 'z', 'R', 0, /* Augmentation string */
769 1, /* Code alignment factor */
770 0x78, /* Data alignment factor */
771 16, /* Return address column */
772 1, /* Augmentation size */
773 DW_EH_PE_pcrel | DW_EH_PE_sdata4, /* FDE encoding */
774 DW_CFA_def_cfa, 7, 8, /* DW_CFA_def_cfa: r7 (rsp) ofs 8 */
775 DW_CFA_offset + 16, 1, /* DW_CFA_offset: r16 (rip) at cfa-8 */
776 DW_CFA_nop, DW_CFA_nop,
777
778 PLT_FDE_LENGTH, 0, 0, 0, /* FDE length */
779 PLT_CIE_LENGTH + 8, 0, 0, 0, /* CIE pointer */
780 0, 0, 0, 0, /* R_X86_64_PC32 .plt goes here */
781 0, 0, 0, 0, /* .plt size goes here */
782 0, /* Augmentation size */
783 DW_CFA_def_cfa_offset, 16, /* DW_CFA_def_cfa_offset: 16 */
784 DW_CFA_advance_loc + 6, /* DW_CFA_advance_loc: 6 to __PLT__+6 */
785 DW_CFA_def_cfa_offset, 24, /* DW_CFA_def_cfa_offset: 24 */
786 DW_CFA_advance_loc + 10, /* DW_CFA_advance_loc: 10 to __PLT__+16 */
787 DW_CFA_def_cfa_expression, /* DW_CFA_def_cfa_expression */
788 11, /* Block length */
789 DW_OP_breg7, 8, /* DW_OP_breg7 (rsp): 8 */
790 DW_OP_breg16, 0, /* DW_OP_breg16 (rip): 0 */
791 DW_OP_lit15, DW_OP_and, DW_OP_lit9, DW_OP_ge,
792 DW_OP_lit3, DW_OP_shl, DW_OP_plus,
793 DW_CFA_nop, DW_CFA_nop, DW_CFA_nop, DW_CFA_nop
794};
795
38b12349 796/* .eh_frame covering the non-lazy .plt section. */
fff53dae 797
38b12349 798static const bfd_byte elf_x86_64_eh_frame_non_lazy_plt[] =
fff53dae
L		 799{
800#define PLT_GOT_FDE_LENGTH 20
801 PLT_CIE_LENGTH, 0, 0, 0, /* CIE length */
802 0, 0, 0, 0, /* CIE ID */
803 1, /* CIE version */
804 'z', 'R', 0, /* Augmentation string */
805 1, /* Code alignment factor */
806 0x78, /* Data alignment factor */
807 16, /* Return address column */
808 1, /* Augmentation size */
809 DW_EH_PE_pcrel | DW_EH_PE_sdata4, /* FDE encoding */
810 DW_CFA_def_cfa, 7, 8, /* DW_CFA_def_cfa: r7 (rsp) ofs 8 */
811 DW_CFA_offset + 16, 1, /* DW_CFA_offset: r16 (rip) at cfa-8 */
812 DW_CFA_nop, DW_CFA_nop,
813
814 PLT_GOT_FDE_LENGTH, 0, 0, 0, /* FDE length */
815 PLT_CIE_LENGTH + 8, 0, 0, 0, /* CIE pointer */
38b12349
L		 816 0, 0, 0, 0, /* the start of non-lazy .plt goes here */
817 0, 0, 0, 0, /* non-lazy .plt size goes here */
fff53dae
L		 818 0, /* Augmentation size */
819 DW_CFA_nop, DW_CFA_nop, DW_CFA_nop, DW_CFA_nop,
820 DW_CFA_nop, DW_CFA_nop, DW_CFA_nop
821};
822
eed180f8 823/* These are the standard parameters. */
765e526c 824static const struct elf_x86_lazy_plt_layout elf_x86_64_lazy_plt =
eed180f8 825 {
07d6d2b8
AM		 826 elf_x86_64_lazy_plt0_entry, /* plt0_entry */
827 LAZY_PLT_ENTRY_SIZE, /* plt0_entry_size */
828 elf_x86_64_lazy_plt_entry, /* plt_entry */
829 LAZY_PLT_ENTRY_SIZE, /* plt_entry_size */
830 2, /* plt0_got1_offset */
831 8, /* plt0_got2_offset */
832 12, /* plt0_got2_insn_end */
833 2, /* plt_got_offset */
834 7, /* plt_reloc_offset */
835 12, /* plt_plt_offset */
836 6, /* plt_got_insn_size */
837 LAZY_PLT_ENTRY_SIZE, /* plt_plt_insn_end */
838 6, /* plt_lazy_offset */
839 elf_x86_64_lazy_plt0_entry, /* pic_plt0_entry */
840 elf_x86_64_lazy_plt_entry, /* pic_plt_entry */
841 elf_x86_64_eh_frame_lazy_plt, /* eh_frame_plt */
38b12349
L		 842 sizeof (elf_x86_64_eh_frame_lazy_plt) /* eh_frame_plt_size */
843 };
844
765e526c 845static const struct elf_x86_non_lazy_plt_layout elf_x86_64_non_lazy_plt =
38b12349 846 {
07d6d2b8
AM		 847 elf_x86_64_non_lazy_plt_entry, /* plt_entry */
848 elf_x86_64_non_lazy_plt_entry, /* pic_plt_entry */
849 NON_LAZY_PLT_ENTRY_SIZE, /* plt_entry_size */
850 2, /* plt_got_offset */
851 6, /* plt_got_insn_size */
852 elf_x86_64_eh_frame_non_lazy_plt, /* eh_frame_plt */
38b12349 853 sizeof (elf_x86_64_eh_frame_non_lazy_plt) /* eh_frame_plt_size */
eed180f8
RM		 854 };
855
765e526c 856static const struct elf_x86_lazy_plt_layout elf_x86_64_lazy_bnd_plt =
0ff2b86e 857 {
07d6d2b8
AM		 858 elf_x86_64_lazy_bnd_plt0_entry, /* plt0_entry */
859 LAZY_PLT_ENTRY_SIZE, /* plt0_entry_size */
860 elf_x86_64_lazy_bnd_plt_entry, /* plt_entry */
861 LAZY_PLT_ENTRY_SIZE, /* plt_entry_size */
862 2, /* plt0_got1_offset */
863 1+8, /* plt0_got2_offset */
864 1+12, /* plt0_got2_insn_end */
865 1+2, /* plt_got_offset */
866 1, /* plt_reloc_offset */
867 7, /* plt_plt_offset */
868 1+6, /* plt_got_insn_size */
869 11, /* plt_plt_insn_end */
870 0, /* plt_lazy_offset */
871 elf_x86_64_lazy_bnd_plt0_entry, /* pic_plt0_entry */
872 elf_x86_64_lazy_bnd_plt_entry, /* pic_plt_entry */
873 elf_x86_64_eh_frame_lazy_bnd_plt, /* eh_frame_plt */
38b12349
L		 874 sizeof (elf_x86_64_eh_frame_lazy_bnd_plt) /* eh_frame_plt_size */
875 };
876
765e526c 877static const struct elf_x86_non_lazy_plt_layout elf_x86_64_non_lazy_bnd_plt =
38b12349 878 {
07d6d2b8
AM		 879 elf_x86_64_non_lazy_bnd_plt_entry, /* plt_entry */
880 elf_x86_64_non_lazy_bnd_plt_entry, /* pic_plt_entry */
881 NON_LAZY_PLT_ENTRY_SIZE, /* plt_entry_size */
882 1+2, /* plt_got_offset */
883 1+6, /* plt_got_insn_size */
884 elf_x86_64_eh_frame_non_lazy_plt, /* eh_frame_plt */
38b12349
L		 885 sizeof (elf_x86_64_eh_frame_non_lazy_plt) /* eh_frame_plt_size */
886 };
887
765e526c 888static const struct elf_x86_lazy_plt_layout elf_x86_64_lazy_ibt_plt =
ee2fdd6f 889 {
07d6d2b8
AM		 890 elf_x86_64_lazy_bnd_plt0_entry, /* plt0_entry */
891 LAZY_PLT_ENTRY_SIZE, /* plt0_entry_size */
892 elf_x86_64_lazy_ibt_plt_entry, /* plt_entry */
893 LAZY_PLT_ENTRY_SIZE, /* plt_entry_size */
894 2, /* plt0_got1_offset */
895 1+8, /* plt0_got2_offset */
896 1+12, /* plt0_got2_insn_end */
897 4+1+2, /* plt_got_offset */
898 4+1, /* plt_reloc_offset */
899 4+1+6, /* plt_plt_offset */
900 4+1+6, /* plt_got_insn_size */
901 4+1+5+5, /* plt_plt_insn_end */
902 0, /* plt_lazy_offset */
903 elf_x86_64_lazy_bnd_plt0_entry, /* pic_plt0_entry */
904 elf_x86_64_lazy_ibt_plt_entry, /* pic_plt_entry */
905 elf_x86_64_eh_frame_lazy_ibt_plt, /* eh_frame_plt */
ee2fdd6f
L		 906 sizeof (elf_x86_64_eh_frame_lazy_ibt_plt) /* eh_frame_plt_size */
907 };
908
765e526c 909static const struct elf_x86_lazy_plt_layout elf_x32_lazy_ibt_plt =
ee2fdd6f 910 {
07d6d2b8
AM		 911 elf_x86_64_lazy_plt0_entry, /* plt0_entry */
912 LAZY_PLT_ENTRY_SIZE, /* plt0_entry_size */
913 elf_x32_lazy_ibt_plt_entry, /* plt_entry */
914 LAZY_PLT_ENTRY_SIZE, /* plt_entry_size */
915 2, /* plt0_got1_offset */
916 8, /* plt0_got2_offset */
917 12, /* plt0_got2_insn_end */
918 4+2, /* plt_got_offset */
919 4+1, /* plt_reloc_offset */
920 4+6, /* plt_plt_offset */
921 4+6, /* plt_got_insn_size */
922 4+5+5, /* plt_plt_insn_end */
923 0, /* plt_lazy_offset */
924 elf_x86_64_lazy_plt0_entry, /* pic_plt0_entry */
925 elf_x32_lazy_ibt_plt_entry, /* pic_plt_entry */
926 elf_x32_eh_frame_lazy_ibt_plt, /* eh_frame_plt */
ee2fdd6f
L		 927 sizeof (elf_x32_eh_frame_lazy_ibt_plt) /* eh_frame_plt_size */
928 };
929
765e526c 930static const struct elf_x86_non_lazy_plt_layout elf_x86_64_non_lazy_ibt_plt =
ee2fdd6f 931 {
07d6d2b8
AM		 932 elf_x86_64_non_lazy_ibt_plt_entry, /* plt_entry */
933 elf_x86_64_non_lazy_ibt_plt_entry, /* pic_plt_entry */
934 LAZY_PLT_ENTRY_SIZE, /* plt_entry_size */
935 4+1+2, /* plt_got_offset */
936 4+1+6, /* plt_got_insn_size */
937 elf_x86_64_eh_frame_non_lazy_plt, /* eh_frame_plt */
ee2fdd6f
L		 938 sizeof (elf_x86_64_eh_frame_non_lazy_plt) /* eh_frame_plt_size */
939 };
940
765e526c 941static const struct elf_x86_non_lazy_plt_layout elf_x32_non_lazy_ibt_plt =
ee2fdd6f 942 {
07d6d2b8
AM		 943 elf_x32_non_lazy_ibt_plt_entry, /* plt_entry */
944 elf_x32_non_lazy_ibt_plt_entry, /* pic_plt_entry */
945 LAZY_PLT_ENTRY_SIZE, /* plt_entry_size */
946 4+2, /* plt_got_offset */
947 4+6, /* plt_got_insn_size */
948 elf_x86_64_eh_frame_non_lazy_plt, /* eh_frame_plt */
ee2fdd6f
L		 949 sizeof (elf_x86_64_eh_frame_non_lazy_plt) /* eh_frame_plt_size */
950 };
951
851b6fa1 952static const struct elf_x86_backend_data elf_x86_64_arch_bed =
38b12349 953 {
07d6d2b8 954 is_normal /* os */
0ff2b86e
L		 955 };
956
eed180f8
RM		 957#define elf_backend_arch_data &elf_x86_64_arch_bed
958
b34976b6 959static bfd_boolean
27482721 960elf64_x86_64_elf_object_p (bfd *abfd)
bffbf940 961{
8d88c4ca
NC		 962 /* Set the right machine number for an x86-64 elf64 file. */
963 bfd_default_set_arch_mach (abfd, bfd_arch_i386, bfd_mach_x86_64);
b34976b6 964 return TRUE;
8d88c4ca
NC		 965}
966
8059fb19
RM		 967static bfd_boolean
968elf32_x86_64_elf_object_p (bfd *abfd)
969{
970 /* Set the right machine number for an x86-64 elf32 file. */
971 bfd_default_set_arch_mach (abfd, bfd_arch_i386, bfd_mach_x64_32);
972 return TRUE;
973}
974
142411ca
L		 975/* Return TRUE if the TLS access code sequence support transition
976 from R_TYPE. */
977
978static bfd_boolean
351f65ca
L		 979elf_x86_64_check_tls_transition (bfd *abfd,
980 struct bfd_link_info *info,
981 asection *sec,
982 bfd_byte *contents,
983 Elf_Internal_Shdr *symtab_hdr,
984 struct elf_link_hash_entry **sym_hashes,
985 unsigned int r_type,
986 const Elf_Internal_Rela *rel,
987 const Elf_Internal_Rela *relend)
bffbf940 988{
142411ca
L		 989 unsigned int val;
990 unsigned long r_symndx;
5c98a14e 991 bfd_boolean largepic = FALSE;
142411ca
L		 992 struct elf_link_hash_entry *h;
993 bfd_vma offset;
0afcef53 994 struct elf_x86_link_hash_table *htab;
e2cbcd91 995 bfd_byte *call;
1d4af308 996 bfd_boolean indirect_call;
142411ca 997
0afcef53 998 htab = elf_x86_hash_table (info, X86_64_ELF_DATA);
142411ca 999 offset = rel->r_offset;
bffbf940 1000 switch (r_type)
142411ca
L		 1001 {
1002 case R_X86_64_TLSGD:
1003 case R_X86_64_TLSLD:
1004 if ((rel + 1) >= relend)
1005 return FALSE;
1006
1007 if (r_type == R_X86_64_TLSGD)
1008 {
52bc799a 1009 /* Check transition from GD access model. For 64bit, only
142411ca 1010 .byte 0x66; leaq foo@tlsgd(%rip), %rdi
e2cbcd91
L		 1011 .word 0x6666; rex64; call __tls_get_addr@PLT
1012 or
1013 .byte 0x66; leaq foo@tlsgd(%rip), %rdi
1014 .byte 0x66; rex64
1015 call *__tls_get_addr@GOTPCREL(%rip)
1016 which may be converted to
1017 addr32 call __tls_get_addr
52bc799a
L		 1018 can transit to different access model. For 32bit, only
1019 leaq foo@tlsgd(%rip), %rdi
e2cbcd91
L		 1020 .word 0x6666; rex64; call __tls_get_addr@PLT
1021 or
1022 leaq foo@tlsgd(%rip), %rdi
1023 .byte 0x66; rex64
1024 call *__tls_get_addr@GOTPCREL(%rip)
1025 which may be converted to
1026 addr32 call __tls_get_addr
1027 can transit to different access model. For largepic,
5c98a14e 1028 we also support:
07d6d2b8
AM		 1029 leaq foo@tlsgd(%rip), %rdi
1030 movabsq $__tls_get_addr@pltoff, %rax
1031 addq $r15, %rax
1032 call *%rax
e2cbcd91 1033 or
07d6d2b8
AM		 1034 leaq foo@tlsgd(%rip), %rdi
1035 movabsq $__tls_get_addr@pltoff, %rax
1036 addq $rbx, %rax
1037 call *%rax */
142411ca 1038
fa289a5f
AM		 1039 static const unsigned char leaq[] = { 0x66, 0x48, 0x8d, 0x3d };
1040
5c98a14e 1041 if ((offset + 12) > sec->size)
142411ca 1042 return FALSE;
52bc799a 1043
e2cbcd91
L		 1044 call = contents + offset + 4;
1045 if (call[0] != 0x66
1046 || !((call[1] == 0x48
1047 && call[2] == 0xff
1048 && call[3] == 0x15)
1049 || (call[1] == 0x48
1050 && call[2] == 0x67
1051 && call[3] == 0xe8)
1052 || (call[1] == 0x66
1053 && call[2] == 0x48
1054 && call[3] == 0xe8)))
5c98a14e
JJ		 1055 {
1056 if (!ABI_64_P (abfd)
1057 || (offset + 19) > sec->size
1058 || offset < 3
e2cbcd91
L		 1059 || memcmp (call - 7, leaq + 1, 3) != 0
1060 || memcmp (call, "\x48\xb8", 2) != 0
1061 || call[11] != 0x01
1062 || call[13] != 0xff
1063 || call[14] != 0xd0
1064 || !((call[10] == 0x48 && call[12] == 0xd8)
1065 || (call[10] == 0x4c && call[12] == 0xf8)))
5c98a14e
JJ		 1066 return FALSE;
1067 largepic = TRUE;
1068 }
1069 else if (ABI_64_P (abfd))
52bc799a 1070 {
52bc799a 1071 if (offset < 4
fa289a5f 1072 || memcmp (contents + offset - 4, leaq, 4) != 0)
52bc799a
L		 1073 return FALSE;
1074 }
1075 else
1076 {
52bc799a 1077 if (offset < 3
fa289a5f 1078 || memcmp (contents + offset - 3, leaq + 1, 3) != 0)
52bc799a
L		 1079 return FALSE;
1080 }
e2cbcd91 1081 indirect_call = call[2] == 0xff;
142411ca
L		 1082 }
1083 else
1084 {
1085 /* Check transition from LD access model. Only
1086 leaq foo@tlsld(%rip), %rdi;
e2cbcd91 1087 call __tls_get_addr@PLT
07d6d2b8 1088 or
e2cbcd91
L		 1089 leaq foo@tlsld(%rip), %rdi;
1090 call *__tls_get_addr@GOTPCREL(%rip)
1091 which may be converted to
1092 addr32 call __tls_get_addr
5c98a14e
JJ		 1093 can transit to different access model. For largepic
1094 we also support:
07d6d2b8
AM		 1095 leaq foo@tlsld(%rip), %rdi
1096 movabsq $__tls_get_addr@pltoff, %rax
1097 addq $r15, %rax
1098 call *%rax
e2cbcd91 1099 or
07d6d2b8
AM		 1100 leaq foo@tlsld(%rip), %rdi
1101 movabsq $__tls_get_addr@pltoff, %rax
1102 addq $rbx, %rax
1103 call *%rax */
142411ca 1104
fa289a5f 1105 static const unsigned char lea[] = { 0x48, 0x8d, 0x3d };
142411ca
L		 1106
1107 if (offset < 3 || (offset + 9) > sec->size)
1108 return FALSE;
1109
5c98a14e 1110 if (memcmp (contents + offset - 3, lea, 3) != 0)
142411ca 1111 return FALSE;
5c98a14e 1112
e2cbcd91
L		 1113 call = contents + offset + 4;
1114 if (!(call[0] == 0xe8
1115 || (call[0] == 0xff && call[1] == 0x15)
1116 || (call[0] == 0x67 && call[1] == 0xe8)))
5c98a14e
JJ		 1117 {
1118 if (!ABI_64_P (abfd)
1119 || (offset + 19) > sec->size
e2cbcd91
L		 1120 || memcmp (call, "\x48\xb8", 2) != 0
1121 || call[11] != 0x01
1122 || call[13] != 0xff
1123 || call[14] != 0xd0
1124 || !((call[10] == 0x48 && call[12] == 0xd8)
1125 || (call[10] == 0x4c && call[12] == 0xf8)))
5c98a14e
JJ		 1126 return FALSE;
1127 largepic = TRUE;
1128 }
e2cbcd91 1129 indirect_call = call[0] == 0xff;
142411ca
L		 1130 }
1131
351f65ca 1132 r_symndx = htab->r_sym (rel[1].r_info);
142411ca
L		 1133 if (r_symndx < symtab_hdr->sh_info)
1134 return FALSE;
1135
1136 h = sym_hashes[r_symndx - symtab_hdr->sh_info];
1d4af308 1137 if (h == NULL
0afcef53 1138 || !((struct elf_x86_link_hash_entry *) h)->tls_get_addr)
e2cbcd91 1139 return FALSE;
e2cbcd91 1140 else
78984959
L		 1141 {
1142 r_type = (ELF32_R_TYPE (rel[1].r_info)
1143 & ~R_X86_64_converted_reloc_bit);
1144 if (largepic)
1145 return r_type == R_X86_64_PLTOFF64;
1146 else if (indirect_call)
1147 return r_type == R_X86_64_GOTPCRELX;
1148 else
1149 return (r_type == R_X86_64_PC32 || r_type == R_X86_64_PLT32);
1150 }
142411ca
L		 1151
1152 case R_X86_64_GOTTPOFF:
1153 /* Check transition from IE access model:
4a4c5f25
L		 1154 mov foo@gottpoff(%rip), %reg
1155 add foo@gottpoff(%rip), %reg
142411ca
L		 1156 */
1157
4a4c5f25
L		 1158 /* Check REX prefix first. */
1159 if (offset >= 3 && (offset + 4) <= sec->size)
1160 {
1161 val = bfd_get_8 (abfd, contents + offset - 3);
1162 if (val != 0x48 && val != 0x4c)
1163 {
1164 /* X32 may have 0x44 REX prefix or no REX prefix. */
1165 if (ABI_64_P (abfd))
1166 return FALSE;
1167 }
1168 }
1169 else
1170 {
1171 /* X32 may not have any REX prefix. */
1172 if (ABI_64_P (abfd))
1173 return FALSE;
1174 if (offset < 2 || (offset + 3) > sec->size)
1175 return FALSE;
1176 }
142411ca
L		 1177
1178 val = bfd_get_8 (abfd, contents + offset - 2);
1179 if (val != 0x8b && val != 0x03)
1180 return FALSE;
1181
1182 val = bfd_get_8 (abfd, contents + offset - 1);
1183 return (val & 0xc7) == 5;
1184
1185 case R_X86_64_GOTPC32_TLSDESC:
1186 /* Check transition from GDesc access model:
1187 leaq x@tlsdesc(%rip), %rax
1188
1189 Make sure it's a leaq adding rip to a 32-bit offset
1190 into any register, although it's probably almost always
1191 going to be rax. */
1192
1193 if (offset < 3 || (offset + 4) > sec->size)
1194 return FALSE;
1195
1196 val = bfd_get_8 (abfd, contents + offset - 3);
1197 if ((val & 0xfb) != 0x48)
1198 return FALSE;
1199
1200 if (bfd_get_8 (abfd, contents + offset - 2) != 0x8d)
1201 return FALSE;
1202
1203 val = bfd_get_8 (abfd, contents + offset - 1);
1204 return (val & 0xc7) == 0x05;
1205
1206 case R_X86_64_TLSDESC_CALL:
1207 /* Check transition from GDesc access model:
1208 call *x@tlsdesc(%rax)
1209 */
1210 if (offset + 2 <= sec->size)
1211 {
1212 /* Make sure that it's a call *x@tlsdesc(%rax). */
e2cbcd91
L		 1213 call = contents + offset;
1214 return call[0] == 0xff && call[1] == 0x10;
142411ca
L		 1215 }
1216
1217 return FALSE;
1218
1219 default:
1220 abort ();
1221 }
1222}
1223
1224/* Return TRUE if the TLS access transition is OK or no transition
1225 will be performed. Update R_TYPE if there is a transition. */
1226
1227static bfd_boolean
351f65ca
L		 1228elf_x86_64_tls_transition (struct bfd_link_info *info, bfd *abfd,
1229 asection *sec, bfd_byte *contents,
1230 Elf_Internal_Shdr *symtab_hdr,
1231 struct elf_link_hash_entry **sym_hashes,
1232 unsigned int *r_type, int tls_type,
1233 const Elf_Internal_Rela *rel,
1234 const Elf_Internal_Rela *relend,
1235 struct elf_link_hash_entry *h,
bedfd056
L		 1236 unsigned long r_symndx,
1237 bfd_boolean from_relocate_section)
142411ca
L		 1238{
1239 unsigned int from_type = *r_type;
1240 unsigned int to_type = from_type;
1241 bfd_boolean check = TRUE;
1242
bb1cb422
L		 1243 /* Skip TLS transition for functions. */
1244 if (h != NULL
1245 && (h->type == STT_FUNC
1246 || h->type == STT_GNU_IFUNC))
1247 return TRUE;
1248
142411ca 1249 switch (from_type)
bffbf940
JJ		 1250 {
1251 case R_X86_64_TLSGD:
67a4f2b7
AO		 1252 case R_X86_64_GOTPC32_TLSDESC:
1253 case R_X86_64_TLSDESC_CALL:
bffbf940 1254 case R_X86_64_GOTTPOFF:
0e1862bb 1255 if (bfd_link_executable (info))
142411ca
L		 1256 {
1257 if (h == NULL)
1258 to_type = R_X86_64_TPOFF32;
1259 else
1260 to_type = R_X86_64_GOTTPOFF;
1261 }
1262
bedfd056
L		 1263 /* When we are called from elf_x86_64_relocate_section, there may
1264 be additional transitions based on TLS_TYPE. */
1265 if (from_relocate_section)
142411ca
L		 1266 {
1267 unsigned int new_to_type = to_type;
1268
51537393 1269 if (TLS_TRANSITION_IE_TO_LE_P (info, h, tls_type))
142411ca
L		 1270 new_to_type = R_X86_64_TPOFF32;
1271
1272 if (to_type == R_X86_64_TLSGD
1273 || to_type == R_X86_64_GOTPC32_TLSDESC
1274 || to_type == R_X86_64_TLSDESC_CALL)
1275 {
1276 if (tls_type == GOT_TLS_IE)
1277 new_to_type = R_X86_64_GOTTPOFF;
1278 }
1279
1280 /* We checked the transition before when we were called from
351f65ca 1281 elf_x86_64_check_relocs. We only want to check the new
142411ca
L		 1282 transition which hasn't been checked before. */
1283 check = new_to_type != to_type && from_type == to_type;
1284 to_type = new_to_type;
1285 }
1286
1287 break;
1288
bffbf940 1289 case R_X86_64_TLSLD:
0e1862bb 1290 if (bfd_link_executable (info))
142411ca
L		 1291 to_type = R_X86_64_TPOFF32;
1292 break;
1293
1294 default:
1295 return TRUE;
bffbf940
JJ		 1296 }
1297
142411ca
L		 1298 /* Return TRUE if there is no transition. */
1299 if (from_type == to_type)
1300 return TRUE;
1301
1302 /* Check if the transition can be performed. */
1303 if (check
351f65ca
L		 1304 && ! elf_x86_64_check_tls_transition (abfd, info, sec, contents,
1305 symtab_hdr, sym_hashes,
1306 from_type, rel, relend))
142411ca 1307 {
2f629d23 1308 reloc_howto_type *from, *to;
4c544807 1309 const char *name;
142411ca 1310
351f65ca
L		 1311 from = elf_x86_64_rtype_to_howto (abfd, from_type);
1312 to = elf_x86_64_rtype_to_howto (abfd, to_type);
142411ca 1313
4c544807
L		 1314 if (h)
1315 name = h->root.root.string;
1316 else
1317 {
0afcef53 1318 struct elf_x86_link_hash_table *htab;
4dfe6ac6 1319
0afcef53 1320 htab = elf_x86_hash_table (info, X86_64_ELF_DATA);
4dfe6ac6
NC		 1321 if (htab == NULL)
1322 name = "*unknown*";
1323 else
1324 {
1325 Elf_Internal_Sym *isym;
1326
1327 isym = bfd_sym_from_r_symndx (&htab->sym_cache,
1328 abfd, r_symndx);
1329 name = bfd_elf_sym_name (abfd, symtab_hdr, isym, NULL);
1330 }
4c544807
L		 1331 }
1332
4eca0228 1333 _bfd_error_handler
695344c0 1334 /* xgettext:c-format */
2dcf00ce
AM		 1335 (_("%pB: TLS transition from %s to %s against `%s' at %#" PRIx64
1336 " in section `%pA' failed"),
1337 abfd, from->name, to->name, name, (uint64_t) rel->r_offset, sec);
142411ca
L		 1338 bfd_set_error (bfd_error_bad_value);
1339 return FALSE;
1340 }
1341
1342 *r_type = to_type;
1343 return TRUE;
bffbf940
JJ		 1344}
1345
c1d11331
L		 1346/* Rename some of the generic section flags to better document how they
1347 are used here. */
6999821f 1348#define check_relocs_failed sec_flg0
338c190a
L		 1349
1350static bfd_boolean
aab921ad
L		 1351elf_x86_64_need_pic (struct bfd_link_info *info,
1352 bfd *input_bfd, asection *sec,
338c190a
L		 1353 struct elf_link_hash_entry *h,
1354 Elf_Internal_Shdr *symtab_hdr,
1355 Elf_Internal_Sym *isym,
1356 reloc_howto_type *howto)
1357{
1358 const char *v = "";
1359 const char *und = "";
1360 const char *pic = "";
aab921ad 1361 const char *object;
338c190a
L		 1362
1363 const char *name;
1364 if (h)
1365 {
1366 name = h->root.root.string;
1367 switch (ELF_ST_VISIBILITY (h->other))
1368 {
1369 case STV_HIDDEN:
1370 v = _("hidden symbol ");
1371 break;
1372 case STV_INTERNAL:
1373 v = _("internal symbol ");
1374 break;
1375 case STV_PROTECTED:
1376 v = _("protected symbol ");
1377 break;
1378 default:
0afcef53 1379 if (((struct elf_x86_link_hash_entry *) h)->def_protected)
a5b4ee94
L		 1380 v = _("protected symbol ");
1381 else
1382 v = _("symbol ");
338c190a
L		 1383 pic = _("; recompile with -fPIC");
1384 break;
1385 }
1386
1387 if (!h->def_regular && !h->def_dynamic)
1388 und = _("undefined ");
1389 }
1390 else
1391 {
1392 name = bfd_elf_sym_name (input_bfd, symtab_hdr, isym, NULL);
1393 pic = _("; recompile with -fPIC");
1394 }
1395
aab921ad
L		 1396 if (bfd_link_dll (info))
1397 object = _("a shared object");
1398 else if (bfd_link_pie (info))
1399 object = _("a PIE object");
1400 else
1401 object = _("a PDE object");
1402
695344c0 1403 /* xgettext:c-format */
871b3ab2 1404 _bfd_error_handler (_("%pB: relocation %s against %s%s`%s' can "
aab921ad
L		 1405 "not be used when making %s%s"),
1406 input_bfd, howto->name, und, v, name,
1407 object, pic);
338c190a
L		 1408 bfd_set_error (bfd_error_bad_value);
1409 sec->check_relocs_failed = 1;
1410 return FALSE;
1411}
c1d11331 1412
c175a657
L		 1413/* With the local symbol, foo, we convert
1414 mov foo@GOTPCREL(%rip), %reg
1415 to
1416 lea foo(%rip), %reg
1417 and convert
1418 call/jmp *foo@GOTPCREL(%rip)
1419 to
1420 nop call foo/jmp foo nop
1421 When PIC is false, convert
1422 test %reg, foo@GOTPCREL(%rip)
1423 to
1424 test $foo, %reg
1425 and convert
1426 binop foo@GOTPCREL(%rip), %reg
1427 to
1428 binop $foo, %reg
1429 where binop is one of adc, add, and, cmp, or, sbb, sub, xor
1430 instructions. */
1431
1432static bfd_boolean
8b43e456 1433elf_x86_64_convert_load_reloc (bfd *abfd,
c175a657 1434 bfd_byte *contents,
6999821f 1435 unsigned int *r_type_p,
c175a657
L		 1436 Elf_Internal_Rela *irel,
1437 struct elf_link_hash_entry *h,
1438 bfd_boolean *converted,
1439 struct bfd_link_info *link_info)
1440{
0afcef53 1441 struct elf_x86_link_hash_table *htab;
c175a657 1442 bfd_boolean is_pic;
8b43e456 1443 bfd_boolean no_overflow;
c175a657
L		 1444 bfd_boolean relocx;
1445 bfd_boolean to_reloc_pc32;
1446 asection *tsec;
c175a657
L		 1447 bfd_signed_vma raddend;
1448 unsigned int opcode;
1449 unsigned int modrm;
6999821f 1450 unsigned int r_type = *r_type_p;
c175a657 1451 unsigned int r_symndx;
c175a657
L		 1452 bfd_vma roff = irel->r_offset;
1453
1454 if (roff < (r_type == R_X86_64_REX_GOTPCRELX ? 3 : 2))
1455 return TRUE;
1456
1457 raddend = irel->r_addend;
1458 /* Addend for 32-bit PC-relative relocation must be -4. */
1459 if (raddend != -4)
1460 return TRUE;
1461
0afcef53 1462 htab = elf_x86_hash_table (link_info, X86_64_ELF_DATA);
c175a657
L		 1463 is_pic = bfd_link_pic (link_info);
1464
1465 relocx = (r_type == R_X86_64_GOTPCRELX
1466 || r_type == R_X86_64_REX_GOTPCRELX);
1467
8b43e456
L		 1468 /* TRUE if --no-relax is used. */
1469 no_overflow = link_info->disable_target_specific_optimizations > 1;
c175a657
L		 1470
1471 r_symndx = htab->r_sym (irel->r_info);
1472
1473 opcode = bfd_get_8 (abfd, contents + roff - 2);
1474
1475 /* Convert mov to lea since it has been done for a while. */
1476 if (opcode != 0x8b)
1477 {
1478 /* Only convert R_X86_64_GOTPCRELX and R_X86_64_REX_GOTPCRELX
1479 for call, jmp or one of adc, add, and, cmp, or, sbb, sub,
1480 test, xor instructions. */
1481 if (!relocx)
1482 return TRUE;
1483 }
1484
1485 /* We convert only to R_X86_64_PC32:
1486 1. Branch.
1487 2. R_X86_64_GOTPCREL since we can't modify REX byte.
8b43e456 1488 3. no_overflow is true.
c175a657
L		 1489 4. PIC.
1490 */
1491 to_reloc_pc32 = (opcode == 0xff
1492 || !relocx
8b43e456 1493 || no_overflow
c175a657
L		 1494 || is_pic);
1495
1496 /* Get the symbol referred to by the reloc. */
1497 if (h == NULL)
1498 {
1499 Elf_Internal_Sym *isym
1500 = bfd_sym_from_r_symndx (&htab->sym_cache, abfd, r_symndx);
1501
1502 /* Skip relocation against undefined symbols. */
1503 if (isym->st_shndx == SHN_UNDEF)
1504 return TRUE;
1505
c175a657
L		 1506 if (isym->st_shndx == SHN_ABS)
1507 tsec = bfd_abs_section_ptr;
1508 else if (isym->st_shndx == SHN_COMMON)
1509 tsec = bfd_com_section_ptr;
1510 else if (isym->st_shndx == SHN_X86_64_LCOMMON)
1511 tsec = &_bfd_elf_large_com_section;
1512 else
1513 tsec = bfd_section_from_elf_index (abfd, isym->st_shndx);
c175a657
L		 1514 }
1515 else
1516 {
1517 /* Undefined weak symbol is only bound locally in executable
1518 and its reference is resolved as 0 without relocation
1519 overflow. We can only perform this optimization for
1520 GOTPCRELX relocations since we need to modify REX byte.
1521 It is OK convert mov with R_X86_64_GOTPCREL to
1522 R_X86_64_PC32. */
0a27fed7
L		 1523 bfd_boolean local_ref;
1524 struct elf_x86_link_hash_entry *eh = elf_x86_hash_entry (h);
1525
1526 /* NB: Also set linker_def via SYMBOL_REFERENCES_LOCAL_P. */
1527 local_ref = SYMBOL_REFERENCES_LOCAL_P (link_info, h);
c175a657 1528 if ((relocx || opcode == 0x8b)
0a27fed7
L		 1529 && (h->root.type == bfd_link_hash_undefweak
1530 && !eh->linker_def
1531 && local_ref))
c175a657
L		 1532 {
1533 if (opcode == 0xff)
1534 {
1535 /* Skip for branch instructions since R_X86_64_PC32
1536 may overflow. */
8b43e456 1537 if (no_overflow)
c175a657
L		 1538 return TRUE;
1539 }
1540 else if (relocx)
1541 {
1542 /* For non-branch instructions, we can convert to
1543 R_X86_64_32/R_X86_64_32S since we know if there
1544 is a REX byte. */
1545 to_reloc_pc32 = FALSE;
1546 }
1547
1548 /* Since we don't know the current PC when PIC is true,
1549 we can't convert to R_X86_64_PC32. */
1550 if (to_reloc_pc32 && is_pic)
1551 return TRUE;
1552
1553 goto convert;
1554 }
1555 /* Avoid optimizing GOTPCREL relocations againt _DYNAMIC since
1556 ld.so may use its link-time address. */
cbd0eecf 1557 else if (h->start_stop
0a27fed7 1558 || eh->linker_def
cbd0eecf
L		 1559 || ((h->def_regular
1560 || h->root.type == bfd_link_hash_defined
1561 || h->root.type == bfd_link_hash_defweak)
1562 && h != htab->elf.hdynamic
0a27fed7 1563 && local_ref))
c175a657
L		 1564 {
1565 /* bfd_link_hash_new or bfd_link_hash_undefined is
1566 set by an assignment in a linker script in
cbd0eecf
L		 1567 bfd_elf_record_link_assignment. start_stop is set
1568 on __start_SECNAME/__stop_SECNAME which mark section
1569 SECNAME. */
1570 if (h->start_stop
0a27fed7 1571 || eh->linker_def
cbd0eecf
L		 1572 || (h->def_regular
1573 && (h->root.type == bfd_link_hash_new
1574 || h->root.type == bfd_link_hash_undefined
1575 || ((h->root.type == bfd_link_hash_defined
1576 || h->root.type == bfd_link_hash_defweak)
1577 && h->root.u.def.section == bfd_und_section_ptr))))
c175a657
L		 1578 {
1579 /* Skip since R_X86_64_32/R_X86_64_32S may overflow. */
8b43e456 1580 if (no_overflow)
c175a657
L		 1581 return TRUE;
1582 goto convert;
1583 }
1584 tsec = h->root.u.def.section;
c175a657
L		 1585 }
1586 else
1587 return TRUE;
1588 }
1589
2168b268
L		 1590 /* Don't convert GOTPCREL relocation against large section. */
1591 if (elf_section_data (tsec) != NULL
1592 && (elf_section_flags (tsec) & SHF_X86_64_LARGE) != 0)
1593 return TRUE;
1594
8b43e456
L		 1595 /* Skip since R_X86_64_PC32/R_X86_64_32/R_X86_64_32S may overflow. */
1596 if (no_overflow)
1597 return TRUE;
c175a657 1598
dc089072 1599convert:
c175a657
L		 1600 if (opcode == 0xff)
1601 {
1602 /* We have "call/jmp *foo@GOTPCREL(%rip)". */
1603 unsigned int nop;
1604 unsigned int disp;
1605 bfd_vma nop_offset;
1606
1607 /* Convert R_X86_64_GOTPCRELX and R_X86_64_REX_GOTPCRELX to
1608 R_X86_64_PC32. */
1609 modrm = bfd_get_8 (abfd, contents + roff - 1);
1610 if (modrm == 0x25)
1611 {
1612 /* Convert to "jmp foo nop". */
1613 modrm = 0xe9;
1614 nop = NOP_OPCODE;
1615 nop_offset = irel->r_offset + 3;
1616 disp = bfd_get_32 (abfd, contents + irel->r_offset);
1617 irel->r_offset -= 1;
1618 bfd_put_32 (abfd, disp, contents + irel->r_offset);
1619 }
1620 else
1621 {
0afcef53
L		 1622 struct elf_x86_link_hash_entry *eh
1623 = (struct elf_x86_link_hash_entry *) h;
e2cbcd91 1624
c175a657
L		 1625 /* Convert to "nop call foo". ADDR_PREFIX_OPCODE
1626 is a nop prefix. */
1627 modrm = 0xe8;
e2cbcd91
L		 1628 /* To support TLS optimization, always use addr32 prefix for
1629 "call *__tls_get_addr@GOTPCREL(%rip)". */
1d4af308 1630 if (eh && eh->tls_get_addr)
c175a657 1631 {
e2cbcd91
L		 1632 nop = 0x67;
1633 nop_offset = irel->r_offset - 2;
c175a657
L		 1634 }
1635 else
e2cbcd91
L		 1636 {
1637 nop = link_info->call_nop_byte;
1638 if (link_info->call_nop_as_suffix)
1639 {
1640 nop_offset = irel->r_offset + 3;
1641 disp = bfd_get_32 (abfd, contents + irel->r_offset);
1642 irel->r_offset -= 1;
1643 bfd_put_32 (abfd, disp, contents + irel->r_offset);
1644 }
1645 else
1646 nop_offset = irel->r_offset - 2;
1647 }
c175a657
L		 1648 }
1649 bfd_put_8 (abfd, nop, contents + nop_offset);
1650 bfd_put_8 (abfd, modrm, contents + irel->r_offset - 1);
1651 r_type = R_X86_64_PC32;
1652 }
1653 else
1654 {
1655 unsigned int rex;
1656 unsigned int rex_mask = REX_R;
1657
1658 if (r_type == R_X86_64_REX_GOTPCRELX)
1659 rex = bfd_get_8 (abfd, contents + roff - 3);
1660 else
1661 rex = 0;
1662
1663 if (opcode == 0x8b)
1664 {
1665 if (to_reloc_pc32)
1666 {
1667 /* Convert "mov foo@GOTPCREL(%rip), %reg" to
1668 "lea foo(%rip), %reg". */
1669 opcode = 0x8d;
1670 r_type = R_X86_64_PC32;
1671 }
1672 else
1673 {
1674 /* Convert "mov foo@GOTPCREL(%rip), %reg" to
1675 "mov $foo, %reg". */
1676 opcode = 0xc7;
1677 modrm = bfd_get_8 (abfd, contents + roff - 1);
1678 modrm = 0xc0 | (modrm & 0x38) >> 3;
1679 if ((rex & REX_W) != 0
1680 && ABI_64_P (link_info->output_bfd))
1681 {
1682 /* Keep the REX_W bit in REX byte for LP64. */
1683 r_type = R_X86_64_32S;
1684 goto rewrite_modrm_rex;
1685 }
1686 else
1687 {
1688 /* If the REX_W bit in REX byte isn't needed,
1689 use R_X86_64_32 and clear the W bit to avoid
1690 sign-extend imm32 to imm64. */
1691 r_type = R_X86_64_32;
1692 /* Clear the W bit in REX byte. */
1693 rex_mask |= REX_W;
1694 goto rewrite_modrm_rex;
1695 }
1696 }
1697 }
1698 else
1699 {
1700 /* R_X86_64_PC32 isn't supported. */
1701 if (to_reloc_pc32)
1702 return TRUE;
1703
1704 modrm = bfd_get_8 (abfd, contents + roff - 1);
1705 if (opcode == 0x85)
1706 {
1707 /* Convert "test %reg, foo@GOTPCREL(%rip)" to
1708 "test $foo, %reg". */
1709 modrm = 0xc0 | (modrm & 0x38) >> 3;
1710 opcode = 0xf7;
1711 }
1712 else
1713 {
1714 /* Convert "binop foo@GOTPCREL(%rip), %reg" to
1715 "binop $foo, %reg". */
1716 modrm = 0xc0 | (modrm & 0x38) >> 3 | (opcode & 0x3c);
1717 opcode = 0x81;
1718 }
1719
1720 /* Use R_X86_64_32 with 32-bit operand to avoid relocation
1721 overflow when sign-extending imm32 to imm64. */
1722 r_type = (rex & REX_W) != 0 ? R_X86_64_32S : R_X86_64_32;
1723
1724rewrite_modrm_rex:
1725 bfd_put_8 (abfd, modrm, contents + roff - 1);
1726
1727 if (rex)
1728 {
1729 /* Move the R bit to the B bit in REX byte. */
1730 rex = (rex & ~rex_mask) | (rex & REX_R) >> 2;
1731 bfd_put_8 (abfd, rex, contents + roff - 3);
1732 }
1733
1734 /* No addend for R_X86_64_32/R_X86_64_32S relocations. */
1735 irel->r_addend = 0;
1736 }
1737
1738 bfd_put_8 (abfd, opcode, contents + roff - 2);
1739 }
1740
6999821f 1741 *r_type_p = r_type;
78984959
L		 1742 irel->r_info = htab->r_info (r_symndx,
1743 r_type | R_X86_64_converted_reloc_bit);
c175a657
L		 1744
1745 *converted = TRUE;
1746
1747 return TRUE;
1748}
1749
70256ad8 1750/* Look through the relocs for a section during the first phase, and
c434dee6
AJ		 1751 calculate needed space in the global offset table, procedure
1752 linkage table, and dynamic reloc sections. */
70256ad8 1753
b34976b6 1754static bfd_boolean
351f65ca
L		 1755elf_x86_64_check_relocs (bfd *abfd, struct bfd_link_info *info,
1756 asection *sec,
1757 const Elf_Internal_Rela *relocs)
70256ad8 1758{
0afcef53 1759 struct elf_x86_link_hash_table *htab;
70256ad8
AJ		 1760 Elf_Internal_Shdr *symtab_hdr;
1761 struct elf_link_hash_entry **sym_hashes;
70256ad8
AJ		 1762 const Elf_Internal_Rela *rel;
1763 const Elf_Internal_Rela *rel_end;
70256ad8 1764 asection *sreloc;
bedfd056 1765 bfd_byte *contents;
5e5e02ae 1766 bfd_boolean converted;
70256ad8 1767
0e1862bb 1768 if (bfd_link_relocatable (info))
b34976b6 1769 return TRUE;
70256ad8 1770
081b1afe
L		 1771 /* Don't do anything special with non-loaded, non-alloced sections.
1772 In particular, any relocs in such sections should not affect GOT
1773 and PLT reference counting (ie. we don't allow them to create GOT
1774 or PLT entries), there's no possibility or desire to optimize TLS
1775 relocs, and there's not much point in propagating relocs to shared
1776 libs that the dynamic linker won't relocate. */
1777 if ((sec->flags & SEC_ALLOC) == 0)
1778 return TRUE;
1779
0afcef53 1780 htab = elf_x86_hash_table (info, X86_64_ELF_DATA);
4dfe6ac6 1781 if (htab == NULL)
afd9acee
L		 1782 {
1783 sec->check_relocs_failed = 1;
1784 return FALSE;
1785 }
4dfe6ac6 1786
fe53b4a4
L		 1787 BFD_ASSERT (is_x86_elf (abfd, htab));
1788
bedfd056
L		 1789 /* Get the section contents. */
1790 if (elf_section_data (sec)->this_hdr.contents != NULL)
1791 contents = elf_section_data (sec)->this_hdr.contents;
1792 else if (!bfd_malloc_and_get_section (abfd, sec, &contents))
1793 {
1794 sec->check_relocs_failed = 1;
1795 return FALSE;
1796 }
1797
0ffa91dd 1798 symtab_hdr = &elf_symtab_hdr (abfd);
70256ad8 1799 sym_hashes = elf_sym_hashes (abfd);
70256ad8 1800
5e5e02ae
L		 1801 converted = FALSE;
1802
c434dee6 1803 sreloc = NULL;
cbe950e9 1804
70256ad8
AJ		 1805 rel_end = relocs + sec->reloc_count;
1806 for (rel = relocs; rel < rel_end; rel++)
1807 {
bffbf940 1808 unsigned int r_type;
d42c267e 1809 unsigned int r_symndx;
70256ad8 1810 struct elf_link_hash_entry *h;
0afcef53 1811 struct elf_x86_link_hash_entry *eh;
4c544807
L		 1812 Elf_Internal_Sym *isym;
1813 const char *name;
06a6a421 1814 bfd_boolean size_reloc;
6999821f 1815 bfd_boolean converted_reloc;
70256ad8 1816
351f65ca
L		 1817 r_symndx = htab->r_sym (rel->r_info);
1818 r_type = ELF32_R_TYPE (rel->r_info);
c434dee6
AJ		 1819
1820 if (r_symndx >= NUM_SHDR_ENTRIES (symtab_hdr))
1821 {
695344c0 1822 /* xgettext:c-format */
871b3ab2 1823 _bfd_error_handler (_("%pB: bad symbol index: %d"),
4eca0228 1824 abfd, r_symndx);
afd9acee 1825 goto error_return;
c434dee6
AJ		 1826 }
1827
70256ad8 1828 if (r_symndx < symtab_hdr->sh_info)
c25bc9fc
L		 1829 {
1830 /* A local symbol. */
c2e61a4e
L		 1831 isym = bfd_sym_from_r_symndx (&htab->sym_cache,
1832 abfd, r_symndx);
1833 if (isym == NULL)
afd9acee 1834 goto error_return;
c25bc9fc
L		 1835
1836 /* Check relocation against local STT_GNU_IFUNC symbol. */
351f65ca 1837 if (ELF_ST_TYPE (isym->st_info) == STT_GNU_IFUNC)
c25bc9fc 1838 {
0afcef53
L		 1839 h = _bfd_elf_x86_get_local_sym_hash (htab, abfd, rel,
1840 TRUE);
c25bc9fc 1841 if (h == NULL)
afd9acee 1842 goto error_return;
6bbec505 1843
c25bc9fc 1844 /* Fake a STT_GNU_IFUNC symbol. */
6322e5c5
L		 1845 h->root.root.string = bfd_elf_sym_name (abfd, symtab_hdr,
1846 isym, NULL);
c25bc9fc
L		 1847 h->type = STT_GNU_IFUNC;
1848 h->def_regular = 1;
1849 h->ref_regular = 1;
1850 h->forced_local = 1;
1851 h->root.type = bfd_link_hash_defined;
1852 }
1853 else
1854 h = NULL;
1855 }
70256ad8 1856 else
71cb9464 1857 {
4c544807 1858 isym = NULL;
71cb9464
L		 1859 h = sym_hashes[r_symndx - symtab_hdr->sh_info];
1860 while (h->root.type == bfd_link_hash_indirect
1861 || h->root.type == bfd_link_hash_warning)
1862 h = (struct elf_link_hash_entry *) h->root.u.i.link;
c25bc9fc 1863 }
cbe950e9 1864
d1534d16
L		 1865 /* Check invalid x32 relocations. */
1866 if (!ABI_64_P (abfd))
1867 switch (r_type)
1868 {
1869 default:
1870 break;
1871
d1534d16
L		 1872 case R_X86_64_DTPOFF64:
1873 case R_X86_64_TPOFF64:
1874 case R_X86_64_PC64:
1875 case R_X86_64_GOTOFF64:
1876 case R_X86_64_GOT64:
1877 case R_X86_64_GOTPCREL64:
1878 case R_X86_64_GOTPC64:
1879 case R_X86_64_GOTPLT64:
1880 case R_X86_64_PLTOFF64:
1881 {
1882 if (h)
1883 name = h->root.root.string;
1884 else
1885 name = bfd_elf_sym_name (abfd, symtab_hdr, isym,
1886 NULL);
4eca0228 1887 _bfd_error_handler
695344c0 1888 /* xgettext:c-format */
871b3ab2 1889 (_("%pB: relocation %s against symbol `%s' isn't "
d1534d16
L		 1890 "supported in x32 mode"), abfd,
1891 x86_64_elf_howto_table[r_type].name, name);
1892 bfd_set_error (bfd_error_bad_value);
afd9acee 1893 goto error_return;
d1534d16
L		 1894 }
1895 break;
1896 }
1897
c25bc9fc
L		 1898 if (h != NULL)
1899 {
ad1e85de
L		 1900 /* It is referenced by a non-shared object. */
1901 h->ref_regular = 1;
13a2df29
L		 1902
1903 if (h->type == STT_GNU_IFUNC)
1904 elf_tdata (info->output_bfd)->has_gnu_symbols
1905 |= elf_gnu_symbol_ifunc;
71cb9464 1906 }
70256ad8 1907
6999821f
L		 1908 converted_reloc = FALSE;
1909 if ((r_type == R_X86_64_GOTPCREL
1910 || r_type == R_X86_64_GOTPCRELX
1911 || r_type == R_X86_64_REX_GOTPCRELX)
1912 && (h == NULL || h->type != STT_GNU_IFUNC))
1913 {
1914 Elf_Internal_Rela *irel = (Elf_Internal_Rela *) rel;
1915 if (!elf_x86_64_convert_load_reloc (abfd, contents, &r_type,
1916 irel, h, &converted_reloc,
1917 info))
1918 goto error_return;
5e5e02ae
L		 1919
1920 if (converted_reloc)
1921 converted = TRUE;
6999821f
L		 1922 }
1923
bedfd056 1924 if (! elf_x86_64_tls_transition (info, abfd, sec, contents,
351f65ca
L		 1925 symtab_hdr, sym_hashes,
1926 &r_type, GOT_UNKNOWN,
bedfd056 1927 rel, rel_end, h, r_symndx, FALSE))
afd9acee 1928 goto error_return;
142411ca 1929
cd048363
L		 1930 /* Check if _GLOBAL_OFFSET_TABLE_ is referenced. */
1931 if (h == htab->elf.hgot)
1932 htab->got_referenced = TRUE;
1933
0afcef53 1934 eh = (struct elf_x86_link_hash_entry *) h;
bffbf940 1935 switch (r_type)
70256ad8 1936 {
bffbf940 1937 case R_X86_64_TLSLD:
0f09b4d8 1938 htab->tls_ld_or_ldm_got.refcount = 1;
bffbf940
JJ		 1939 goto create_got;
1940
1941 case R_X86_64_TPOFF32:
0e1862bb 1942 if (!bfd_link_executable (info) && ABI_64_P (abfd))
aab921ad 1943 return elf_x86_64_need_pic (info, abfd, sec, h, symtab_hdr, isym,
338c190a 1944 &x86_64_elf_howto_table[r_type]);
aec6b87e 1945 if (eh != NULL)
98b273dc 1946 eh->zero_undefweak &= 0x2;
bffbf940 1947 break;
c434dee6 1948
bffbf940 1949 case R_X86_64_GOTTPOFF:
0e1862bb 1950 if (!bfd_link_executable (info))
bffbf940
JJ		 1951 info->flags |= DF_STATIC_TLS;
1952 /* Fall through */
70256ad8 1953
bffbf940
JJ		 1954 case R_X86_64_GOT32:
1955 case R_X86_64_GOTPCREL:
56ceb5b5
L		 1956 case R_X86_64_GOTPCRELX:
1957 case R_X86_64_REX_GOTPCRELX:
bffbf940 1958 case R_X86_64_TLSGD:
7b81dfbb
AJ		 1959 case R_X86_64_GOT64:
1960 case R_X86_64_GOTPCREL64:
1961 case R_X86_64_GOTPLT64:
67a4f2b7
AO		 1962 case R_X86_64_GOTPC32_TLSDESC:
1963 case R_X86_64_TLSDESC_CALL:
bffbf940
JJ		 1964 /* This symbol requires a global offset table entry. */
1965 {
1966 int tls_type, old_tls_type;
1967
1968 switch (r_type)
1969 {
1970 default: tls_type = GOT_NORMAL; break;
1971 case R_X86_64_TLSGD: tls_type = GOT_TLS_GD; break;
1972 case R_X86_64_GOTTPOFF: tls_type = GOT_TLS_IE; break;
67a4f2b7
AO		 1973 case R_X86_64_GOTPC32_TLSDESC:
1974 case R_X86_64_TLSDESC_CALL:
1975 tls_type = GOT_TLS_GDESC; break;
bffbf940
JJ		 1976 }
1977
1978 if (h != NULL)
1979 {
0f09b4d8 1980 h->got.refcount = 1;
aec6b87e 1981 old_tls_type = eh->tls_type;
bffbf940
JJ		 1982 }
1983 else
1984 {
1985 bfd_signed_vma *local_got_refcounts;
1986
1987 /* This is a global offset table entry for a local symbol. */
1988 local_got_refcounts = elf_local_got_refcounts (abfd);
1989 if (local_got_refcounts == NULL)
1990 {
1991 bfd_size_type size;
1992
1993 size = symtab_hdr->sh_info;
67a4f2b7
AO		 1994 size *= sizeof (bfd_signed_vma)
1995 + sizeof (bfd_vma) + sizeof (char);
bffbf940
JJ		 1996 local_got_refcounts = ((bfd_signed_vma *)
1997 bfd_zalloc (abfd, size));
1998 if (local_got_refcounts == NULL)
afd9acee 1999 goto error_return;
bffbf940 2000 elf_local_got_refcounts (abfd) = local_got_refcounts;
0afcef53 2001 elf_x86_local_tlsdesc_gotent (abfd)
67a4f2b7 2002 = (bfd_vma *) (local_got_refcounts + symtab_hdr->sh_info);
0afcef53 2003 elf_x86_local_got_tls_type (abfd)
67a4f2b7 2004 = (char *) (local_got_refcounts + 2 * symtab_hdr->sh_info);
bffbf940 2005 }
0f09b4d8 2006 local_got_refcounts[r_symndx] = 1;
bffbf940 2007 old_tls_type
0afcef53 2008 = elf_x86_local_got_tls_type (abfd) [r_symndx];
bffbf940
JJ		 2009 }
2010
2011 /* If a TLS symbol is accessed using IE at least once,
2012 there is no point to use dynamic model for it. */
2013 if (old_tls_type != tls_type && old_tls_type != GOT_UNKNOWN
67a4f2b7
AO		 2014 && (! GOT_TLS_GD_ANY_P (old_tls_type)
2015 || tls_type != GOT_TLS_IE))
bffbf940 2016 {
67a4f2b7 2017 if (old_tls_type == GOT_TLS_IE && GOT_TLS_GD_ANY_P (tls_type))
bffbf940 2018 tls_type = old_tls_type;
67a4f2b7
AO		 2019 else if (GOT_TLS_GD_ANY_P (old_tls_type)
2020 && GOT_TLS_GD_ANY_P (tls_type))
2021 tls_type |= old_tls_type;
bffbf940
JJ		 2022 else
2023 {
09a24cbf 2024 if (h)
4c544807
L		 2025 name = h->root.root.string;
2026 else
2027 name = bfd_elf_sym_name (abfd, symtab_hdr,
2028 isym, NULL);
4eca0228 2029 _bfd_error_handler
695344c0 2030 /* xgettext:c-format */
871b3ab2 2031 (_("%pB: '%s' accessed both as normal and"
63a5468a 2032 " thread local symbol"),
4c544807 2033 abfd, name);
68c4a57e 2034 bfd_set_error (bfd_error_bad_value);
afd9acee 2035 goto error_return;
bffbf940
JJ		 2036 }
2037 }
2038
2039 if (old_tls_type != tls_type)
2040 {
aec6b87e
L		 2041 if (eh != NULL)
2042 eh->tls_type = tls_type;
bffbf940 2043 else
0afcef53 2044 elf_x86_local_got_tls_type (abfd) [r_symndx] = tls_type;
bffbf940
JJ		 2045 }
2046 }
c434dee6
AJ		 2047 /* Fall through */
2048
d6ab8113
JB		 2049 case R_X86_64_GOTOFF64:
2050 case R_X86_64_GOTPC32:
7b81dfbb 2051 case R_X86_64_GOTPC64:
bffbf940 2052 create_got:
aec6b87e 2053 if (eh != NULL)
98b273dc 2054 eh->zero_undefweak &= 0x2;
70256ad8
AJ		 2055 break;
2056
2057 case R_X86_64_PLT32:
c3320543 2058 case R_X86_64_PLT32_BND:
70256ad8 2059 /* This symbol requires a procedure linkage table entry. We
407443a3
AJ		 2060 actually build the entry in adjust_dynamic_symbol,
2061 because this might be a case of linking PIC code which is
2062 never referenced by a dynamic object, in which case we
2063 don't need to generate a procedure linkage table entry
2064 after all. */
70256ad8
AJ		 2065
2066 /* If this is a local symbol, we resolve it directly without
407443a3 2067 creating a procedure linkage table entry. */
70256ad8
AJ		 2068 if (h == NULL)
2069 continue;
2070
98b273dc 2071 eh->zero_undefweak &= 0x2;
f5385ebf 2072 h->needs_plt = 1;
79b0c981 2073 h->plt.refcount = 1;
70256ad8
AJ		 2074 break;
2075
7b81dfbb
AJ		 2076 case R_X86_64_PLTOFF64:
2077 /* This tries to form the 'address' of a function relative
2078 to GOT. For global symbols we need a PLT entry. */
2079 if (h != NULL)
2080 {
2081 h->needs_plt = 1;
79b0c981 2082 h->plt.refcount = 1;
7b81dfbb
AJ		 2083 }
2084 goto create_got;
2085
6a3e1bae
L		 2086 case R_X86_64_SIZE32:
2087 case R_X86_64_SIZE64:
06a6a421 2088 size_reloc = TRUE;
6a3e1bae
L		 2089 goto do_size;
2090
248775ba
L		 2091 case R_X86_64_32:
2092 if (!ABI_64_P (abfd))
2093 goto pointer;
1a0670f3 2094 /* Fall through. */
cc78d0af
AJ		 2095 case R_X86_64_8:
2096 case R_X86_64_16:
70256ad8 2097 case R_X86_64_32S:
338c190a
L		 2098 /* Check relocation overflow as these relocs may lead to
2099 run-time relocation overflow. Don't error out for
1b71fb54 2100 sections we don't care about, such as debug sections or
338c190a 2101 when relocation overflow check is disabled. */
4c10bbaa 2102 if (!info->no_reloc_overflow_check
6999821f 2103 && !converted_reloc
338c190a
L		 2104 && (bfd_link_pic (info)
2105 || (bfd_link_executable (info)
2106 && h != NULL
2107 && !h->def_regular
2108 && h->def_dynamic
081b1afe 2109 && (sec->flags & SEC_READONLY) == 0)))
aab921ad 2110 return elf_x86_64_need_pic (info, abfd, sec, h, symtab_hdr, isym,
338c190a 2111 &x86_64_elf_howto_table[r_type]);
1b71fb54
AJ		 2112 /* Fall through. */
2113
c434dee6
AJ		 2114 case R_X86_64_PC8:
2115 case R_X86_64_PC16:
70256ad8 2116 case R_X86_64_PC32:
c3320543 2117 case R_X86_64_PC32_BND:
d6ab8113 2118 case R_X86_64_PC64:
1b71fb54 2119 case R_X86_64_64:
248775ba 2120pointer:
aec6b87e 2121 if (eh != NULL && (sec->flags & SEC_CODE) != 0)
98b273dc 2122 eh->zero_undefweak |= 0x2;
bf52d7c7
L		 2123 /* We are called after all symbols have been resolved. Only
2124 relocation against STT_GNU_IFUNC symbol must go through
2125 PLT. */
d1ed1c7d
L		 2126 if (h != NULL
2127 && (bfd_link_executable (info)
bf52d7c7 2128 || h->type == STT_GNU_IFUNC))
c434dee6 2129 {
79b0c981 2130 bfd_boolean func_pointer_ref = FALSE;
233cc9c1 2131
5db4f0d3
L		 2132 if (r_type == R_X86_64_PC32)
2133 {
2134 /* Since something like ".long foo - ." may be used
2135 as pointer, make sure that PLT is used if foo is
2136 a function defined in a shared library. */
2137 if ((sec->flags & SEC_CODE) == 0)
451875b4
L		 2138 {
2139 h->pointer_equality_needed = 1;
2140 if (bfd_link_pie (info)
2141 && h->type == STT_FUNC
2142 && !h->def_regular
2143 && h->def_dynamic)
2144 {
2145 h->needs_plt = 1;
2146 h->plt.refcount = 1;
2147 }
2148 }
5db4f0d3
L		 2149 }
2150 else if (r_type != R_X86_64_PC32_BND
2151 && r_type != R_X86_64_PC64)
04ebc307
L		 2152 {
2153 h->pointer_equality_needed = 1;
2154 /* At run-time, R_X86_64_64 can be resolved for both
2155 x86-64 and x32. But R_X86_64_32 and R_X86_64_32S
2156 can only be resolved for x32. */
2157 if ((sec->flags & SEC_READONLY) == 0
2158 && (r_type == R_X86_64_64
2159 || (!ABI_64_P (abfd)
2160 && (r_type == R_X86_64_32
2161 || r_type == R_X86_64_32S))))
79b0c981
L		 2162 func_pointer_ref = TRUE;
2163 }
2164
2165 if (!func_pointer_ref)
2166 {
2167 /* If this reloc is in a read-only section, we might
2168 need a copy reloc. We can't check reliably at this
2169 stage whether the section is read-only, as input
2170 sections have not yet been mapped to output sections.
2171 Tentatively set the flag for now, and correct in
2172 adjust_dynamic_symbol. */
2173 h->non_got_ref = 1;
2174
2175 /* We may need a .plt entry if the symbol is a function
2176 defined in a shared lib or is a function referenced
2177 from the code or read-only section. */
2178 if (!h->def_regular
2179 || (sec->flags & (SEC_CODE | SEC_READONLY)) != 0)
2180 h->plt.refcount = 1;
04ebc307 2181 }
c434dee6 2182 }
70256ad8 2183
06a6a421 2184 size_reloc = FALSE;
6a3e1bae 2185do_size:
451875b4 2186 if (NEED_DYNAMIC_RELOCATION_P (info, TRUE, h, sec, r_type,
daf1c414 2187 htab->pointer_r_type))
70256ad8 2188 {
e03a8ed8
L		 2189 struct elf_dyn_relocs *p;
2190 struct elf_dyn_relocs **head;
c434dee6
AJ		 2191
2192 /* We must copy these reloc types into the output file.
2193 Create a reloc section in dynobj and make room for
2194 this reloc. */
70256ad8
AJ		 2195 if (sreloc == NULL)
2196 {
83bac4b0 2197 sreloc = _bfd_elf_make_dynamic_reloc_section
82e96e07
L		 2198 (sec, htab->elf.dynobj, ABI_64_P (abfd) ? 3 : 2,
2199 abfd, /*rela?*/ TRUE);
70256ad8 2200
70256ad8 2201 if (sreloc == NULL)
afd9acee 2202 goto error_return;
70256ad8
AJ		 2203 }
2204
c434dee6
AJ		 2205 /* If this is a global symbol, we count the number of
2206 relocations we need for this symbol. */
2207 if (h != NULL)
aec6b87e 2208 head = &eh->dyn_relocs;
c434dee6
AJ		 2209 else
2210 {
2211 /* Track dynamic relocs needed for local syms too.
2212 We really need local syms available to do this
2213 easily. Oh well. */
c434dee6 2214 asection *s;
87d72d41 2215 void **vpp;
87d72d41
AM		 2216
2217 isym = bfd_sym_from_r_symndx (&htab->sym_cache,
2218 abfd, r_symndx);
2219 if (isym == NULL)
afd9acee 2220 goto error_return;
87d72d41
AM		 2221
2222 s = bfd_section_from_elf_index (abfd, isym->st_shndx);
c434dee6 2223 if (s == NULL)
87d72d41 2224 s = sec;
70256ad8 2225
e81d3500
DD		 2226 /* Beware of type punned pointers vs strict aliasing
2227 rules. */
2228 vpp = &(elf_section_data (s)->local_dynrel);
e03a8ed8 2229 head = (struct elf_dyn_relocs **)vpp;
c434dee6 2230 }
70256ad8 2231
c434dee6
AJ		 2232 p = *head;
2233 if (p == NULL || p->sec != sec)
2234 {
2235 bfd_size_type amt = sizeof *p;
d8045f23 2236
e03a8ed8 2237 p = ((struct elf_dyn_relocs *)
c434dee6 2238 bfd_alloc (htab->elf.dynobj, amt));
70256ad8 2239 if (p == NULL)
afd9acee 2240 goto error_return;
c434dee6
AJ		 2241 p->next = *head;
2242 *head = p;
2243 p->sec = sec;
2244 p->count = 0;
2245 p->pc_count = 0;
70256ad8 2246 }
c434dee6
AJ		 2247
2248 p->count += 1;
06a6a421 2249 /* Count size relocation as PC-relative relocation. */
daf1c414 2250 if (X86_PCREL_TYPE_P (r_type) || size_reloc)
c434dee6 2251 p->pc_count += 1;
70256ad8
AJ		 2252 }
2253 break;
fe4770f4
AJ		 2254
2255 /* This relocation describes the C++ object vtable hierarchy.
2256 Reconstruct it for later use during GC. */
2257 case R_X86_64_GNU_VTINHERIT:
c152c796 2258 if (!bfd_elf_gc_record_vtinherit (abfd, sec, h, rel->r_offset))
afd9acee 2259 goto error_return;
fe4770f4
AJ		 2260 break;
2261
2262 /* This relocation describes which C++ vtable entries are actually
2263 used. Record for later use during GC. */
2264 case R_X86_64_GNU_VTENTRY:
d17e0c6e
JB		 2265 BFD_ASSERT (h != NULL);
2266 if (h != NULL
2267 && !bfd_elf_gc_record_vtentry (abfd, sec, h, rel->r_addend))
afd9acee 2268 goto error_return;
fe4770f4 2269 break;
c434dee6
AJ		 2270
2271 default:
2272 break;
70256ad8
AJ		 2273 }
2274 }
2275
bedfd056
L		 2276 if (elf_section_data (sec)->this_hdr.contents != contents)
2277 {
5e5e02ae 2278 if (!converted && !info->keep_memory)
bedfd056
L		 2279 free (contents);
2280 else
2281 {
5e5e02ae
L		 2282 /* Cache the section contents for elf_link_input_bfd if any
2283 load is converted or --no-keep-memory isn't used. */
bedfd056
L		 2284 elf_section_data (sec)->this_hdr.contents = contents;
2285 }
2286 }
2287
5e5e02ae
L		 2288 /* Cache relocations if any load is converted. */
2289 if (elf_section_data (sec)->relocs != relocs && converted)
2290 elf_section_data (sec)->relocs = (Elf_Internal_Rela *) relocs;
2291
b34976b6 2292 return TRUE;
afd9acee
L		 2293
2294error_return:
bedfd056
L		 2295 if (elf_section_data (sec)->this_hdr.contents != contents)
2296 free (contents);
afd9acee
L		 2297 sec->check_relocs_failed = 1;
2298 return FALSE;
70256ad8
AJ		 2299}
2300
bffbf940
JJ		 2301/* Return the relocation value for @tpoff relocation
2302 if STT_TLS virtual address is ADDRESS. */
2303
2304static bfd_vma
351f65ca 2305elf_x86_64_tpoff (struct bfd_link_info *info, bfd_vma address)
bffbf940 2306{
e1918d23 2307 struct elf_link_hash_table *htab = elf_hash_table (info);
7dc98aea
RO		 2308 const struct elf_backend_data *bed = get_elf_backend_data (info->output_bfd);
2309 bfd_vma static_tls_size;
bffbf940
JJ		 2310
2311 /* If tls_segment is NULL, we should have signalled an error already. */
e1918d23 2312 if (htab->tls_sec == NULL)
bffbf940 2313 return 0;
7dc98aea
RO		 2314
2315 /* Consider special static TLS alignment requirements. */
2316 static_tls_size = BFD_ALIGN (htab->tls_size, bed->static_tls_alignment);
2317 return address - static_tls_size - htab->tls_sec->vma;
bffbf940
JJ		 2318}
2319
8d88c4ca
NC		 2320/* Relocate an x86_64 ELF section. */
2321
b34976b6 2322static bfd_boolean
351f65ca
L		 2323elf_x86_64_relocate_section (bfd *output_bfd,
2324 struct bfd_link_info *info,
2325 bfd *input_bfd,
2326 asection *input_section,
2327 bfd_byte *contents,
2328 Elf_Internal_Rela *relocs,
2329 Elf_Internal_Sym *local_syms,
2330 asection **local_sections)
8d88c4ca 2331{
0afcef53 2332 struct elf_x86_link_hash_table *htab;
8d88c4ca
NC		 2333 Elf_Internal_Shdr *symtab_hdr;
2334 struct elf_link_hash_entry **sym_hashes;
2335 bfd_vma *local_got_offsets;
67a4f2b7 2336 bfd_vma *local_tlsdesc_gotents;
c434dee6 2337 Elf_Internal_Rela *rel;
60f2e42e 2338 Elf_Internal_Rela *wrel;
8d88c4ca 2339 Elf_Internal_Rela *relend;
38b12349 2340 unsigned int plt_entry_size;
8d88c4ca 2341
338c190a
L		 2342 /* Skip if check_relocs failed. */
2343 if (input_section->check_relocs_failed)
2344 return FALSE;
2345
0afcef53 2346 htab = elf_x86_hash_table (info, X86_64_ELF_DATA);
4dfe6ac6
NC		 2347 if (htab == NULL)
2348 return FALSE;
fe53b4a4
L		 2349
2350 BFD_ASSERT (is_x86_elf (input_bfd, htab));
2351
765e526c 2352 plt_entry_size = htab->plt.plt_entry_size;
0ffa91dd 2353 symtab_hdr = &elf_symtab_hdr (input_bfd);
8d88c4ca
NC		 2354 sym_hashes = elf_sym_hashes (input_bfd);
2355 local_got_offsets = elf_local_got_offsets (input_bfd);
0afcef53 2356 local_tlsdesc_gotents = elf_x86_local_tlsdesc_gotent (input_bfd);
8d88c4ca 2357
0afcef53 2358 _bfd_x86_elf_set_tls_module_base (info);
9f03412a 2359
60f2e42e 2360 rel = wrel = relocs;
8d88c4ca 2361 relend = relocs + input_section->reloc_count;
60f2e42e 2362 for (; rel < relend; wrel++, rel++)
8d88c4ca 2363 {
419414ea 2364 unsigned int r_type, r_type_tls;
8d88c4ca
NC		 2365 reloc_howto_type *howto;
2366 unsigned long r_symndx;
2367 struct elf_link_hash_entry *h;
0afcef53 2368 struct elf_x86_link_hash_entry *eh;
8d88c4ca
NC		 2369 Elf_Internal_Sym *sym;
2370 asection *sec;
0ff2b86e 2371 bfd_vma off, offplt, plt_offset;
8d88c4ca 2372 bfd_vma relocation;
b34976b6 2373 bfd_boolean unresolved_reloc;
8d88c4ca 2374 bfd_reloc_status_type r;
bffbf940 2375 int tls_type;
0ff2b86e 2376 asection *base_got, *resolved_plt;
1788fc08 2377 bfd_vma st_size;
aec6b87e 2378 bfd_boolean resolved_to_zero;
9e9821dd 2379 bfd_boolean relative_reloc;
78984959 2380 bfd_boolean converted_reloc;
aebcc8ff 2381 bfd_boolean need_copy_reloc_in_pie;
8d88c4ca 2382
351f65ca 2383 r_type = ELF32_R_TYPE (rel->r_info);
fe4770f4
AJ		 2384 if (r_type == (int) R_X86_64_GNU_VTINHERIT
2385 || r_type == (int) R_X86_64_GNU_VTENTRY)
18954b29
L		 2386 {
2387 if (wrel != rel)
2388 *wrel = *rel;
2389 continue;
2390 }
8d88c4ca 2391
78984959
L		 2392 converted_reloc = (r_type & R_X86_64_converted_reloc_bit) != 0;
2393 r_type &= ~R_X86_64_converted_reloc_bit;
2394
9911c0fc 2395 if (r_type >= (int) R_X86_64_standard)
47aeb64c 2396 return _bfd_unrecognized_reloc (input_bfd, input_section, r_type);
8d88c4ca 2397
d7921315 2398 if (r_type != (int) R_X86_64_32
eed180f8 2399 || ABI_64_P (output_bfd))
d7921315
L		 2400 howto = x86_64_elf_howto_table + r_type;
2401 else
2402 howto = (x86_64_elf_howto_table
2403 + ARRAY_SIZE (x86_64_elf_howto_table) - 1);
351f65ca 2404 r_symndx = htab->r_sym (rel->r_info);
8d88c4ca
NC		 2405 h = NULL;
2406 sym = NULL;
2407 sec = NULL;
b34976b6 2408 unresolved_reloc = FALSE;
8d88c4ca 2409 if (r_symndx < symtab_hdr->sh_info)
8da6118f
KH		 2410 {
2411 sym = local_syms + r_symndx;
2412 sec = local_sections[r_symndx];
c434dee6 2413
c25bc9fc
L		 2414 relocation = _bfd_elf_rela_local_sym (output_bfd, sym,
2415 &sec, rel);
1788fc08 2416 st_size = sym->st_size;
c25bc9fc
L		 2417
2418 /* Relocate against local STT_GNU_IFUNC symbol. */
0e1862bb 2419 if (!bfd_link_relocatable (info)
351f65ca 2420 && ELF_ST_TYPE (sym->st_info) == STT_GNU_IFUNC)
c25bc9fc 2421 {
0afcef53
L		 2422 h = _bfd_elf_x86_get_local_sym_hash (htab, input_bfd,
2423 rel, FALSE);
c25bc9fc
L		 2424 if (h == NULL)
2425 abort ();
2426
eed180f8 2427 /* Set STT_GNU_IFUNC symbol value. */
c25bc9fc
L		 2428 h->root.u.def.value = sym->st_value;
2429 h->root.u.def.section = sec;
2430 }
8da6118f 2431 }
8d88c4ca 2432 else
8da6118f 2433 {
c9736ba0 2434 bfd_boolean warned ATTRIBUTE_UNUSED;
62d887d4 2435 bfd_boolean ignored ATTRIBUTE_UNUSED;
c434dee6 2436
b2a8e766
AM		 2437 RELOC_FOR_GLOBAL_SYMBOL (info, input_bfd, input_section, rel,
2438 r_symndx, symtab_hdr, sym_hashes,
2439 h, sec, relocation,
62d887d4 2440 unresolved_reloc, warned, ignored);
1788fc08 2441 st_size = h->size;
8da6118f 2442 }
ab96bf03 2443
dbaa2011 2444 if (sec != NULL && discarded_section (sec))
60f2e42e
L		 2445 {
2446 _bfd_clear_contents (howto, input_bfd, input_section,
2447 contents + rel->r_offset);
2448 wrel->r_offset = rel->r_offset;
2449 wrel->r_info = 0;
2450 wrel->r_addend = 0;
2451
2452 /* For ld -r, remove relocations in debug sections against
2453 sections defined in discarded sections. Not done for
2454 eh_frame editing code expects to be present. */
2455 if (bfd_link_relocatable (info)
2456 && (input_section->flags & SEC_DEBUGGING))
2457 wrel--;
2458
2459 continue;
2460 }
ab96bf03 2461
0e1862bb 2462 if (bfd_link_relocatable (info))
2d5da473
L		 2463 {
2464 if (wrel != rel)
2465 *wrel = *rel;
2466 continue;
2467 }
ab96bf03 2468
1788fc08 2469 if (rel->r_addend == 0 && !ABI_64_P (output_bfd))
64d25c44 2470 {
1788fc08
L		 2471 if (r_type == R_X86_64_64)
2472 {
2473 /* For x32, treat R_X86_64_64 like R_X86_64_32 and
2474 zero-extend it to 64bit if addend is zero. */
2475 r_type = R_X86_64_32;
2476 memset (contents + rel->r_offset + 4, 0, 4);
2477 }
2478 else if (r_type == R_X86_64_SIZE64)
2479 {
2480 /* For x32, treat R_X86_64_SIZE64 like R_X86_64_SIZE32 and
2481 zero-extend it to 64bit if addend is zero. */
2482 r_type = R_X86_64_SIZE32;
2483 memset (contents + rel->r_offset + 4, 0, 4);
2484 }
64d25c44
L		 2485 }
2486
0afcef53 2487 eh = (struct elf_x86_link_hash_entry *) h;
0ff2b86e 2488
cbe950e9
L		 2489 /* Since STT_GNU_IFUNC symbol must go through PLT, we handle
2490 it here if it is defined in a non-shared object. */
2491 if (h != NULL
2492 && h->type == STT_GNU_IFUNC
2493 && h->def_regular)
2494 {
cbe950e9 2495 bfd_vma plt_index;
4c544807 2496 const char *name;
cbe950e9 2497
97dc35c8
L		 2498 if ((input_section->flags & SEC_ALLOC) == 0)
2499 {
2500 /* Dynamic relocs are not propagated for SEC_DEBUGGING
2501 sections because such sections are not SEC_ALLOC and
2502 thus ld.so will not process them. */
2503 if ((input_section->flags & SEC_DEBUGGING) != 0)
0eace210 2504 continue;
97dc35c8
L		 2505 abort ();
2506 }
233cc9c1
L		 2507
2508 switch (r_type)
2509 {
2510 default:
2511 break;
2512
2513 case R_X86_64_GOTPCREL:
2514 case R_X86_64_GOTPCRELX:
2515 case R_X86_64_REX_GOTPCRELX:
2516 case R_X86_64_GOTPCREL64:
2517 base_got = htab->elf.sgot;
2518 off = h->got.offset;
2519
2520 if (base_got == NULL)
2521 abort ();
2522
2523 if (off == (bfd_vma) -1)
2524 {
2525 /* We can't use h->got.offset here to save state, or
2526 even just remember the offset, as finish_dynamic_symbol
2527 would use that as offset into .got. */
2528
2529 if (h->plt.offset == (bfd_vma) -1)
2530 abort ();
2531
2532 if (htab->elf.splt != NULL)
2533 {
38b12349 2534 plt_index = (h->plt.offset / plt_entry_size
765e526c 2535 - htab->plt.has_plt0);
233cc9c1
L		 2536 off = (plt_index + 3) * GOT_ENTRY_SIZE;
2537 base_got = htab->elf.sgotplt;
2538 }
2539 else
2540 {
2541 plt_index = h->plt.offset / plt_entry_size;
2542 off = plt_index * GOT_ENTRY_SIZE;
2543 base_got = htab->elf.igotplt;
2544 }
2545
2546 if (h->dynindx == -1
2547 || h->forced_local
2548 || info->symbolic)
2549 {
2550 /* This references the local defitionion. We must
2551 initialize this entry in the global offset table.
2552 Since the offset must always be a multiple of 8,
2553 we use the least significant bit to record
2554 whether we have initialized it already.
2555
2556 When doing a dynamic link, we create a .rela.got
2557 relocation entry to initialize the value. This
2558 is done in the finish_dynamic_symbol routine. */
2559 if ((off & 1) != 0)
2560 off &= ~1;
2561 else
2562 {
2563 bfd_put_64 (output_bfd, relocation,
2564 base_got->contents + off);
2565 /* Note that this is harmless for the GOTPLT64
2566 case, as -1 | 1 still is -1. */
2567 h->got.offset |= 1;
2568 }
2569 }
2570 }
2571
2572 relocation = (base_got->output_section->vma
2573 + base_got->output_offset + off);
2574
2575 goto do_relocation;
2576 }
2577
2578 if (h->plt.offset == (bfd_vma) -1)
2579 {
2580 /* Handle static pointers of STT_GNU_IFUNC symbols. */
2581 if (r_type == htab->pointer_r_type
2582 && (input_section->flags & SEC_CODE) == 0)
2583 goto do_ifunc_pointer;
2584 goto bad_ifunc_reloc;
2585 }
cbe950e9
L		 2586
2587 /* STT_GNU_IFUNC symbol must go through PLT. */
0ff2b86e
L		 2588 if (htab->elf.splt != NULL)
2589 {
f2c29a16 2590 if (htab->plt_second != NULL)
0ff2b86e 2591 {
f2c29a16
L		 2592 resolved_plt = htab->plt_second;
2593 plt_offset = eh->plt_second.offset;
0ff2b86e
L		 2594 }
2595 else
2596 {
2597 resolved_plt = htab->elf.splt;
2598 plt_offset = h->plt.offset;
2599 }
2600 }
2601 else
2602 {
2603 resolved_plt = htab->elf.iplt;
2604 plt_offset = h->plt.offset;
2605 }
2606
2607 relocation = (resolved_plt->output_section->vma
2608 + resolved_plt->output_offset + plt_offset);
cbe950e9
L		 2609
2610 switch (r_type)
2611 {
2612 default:
233cc9c1 2613bad_ifunc_reloc:
4c544807
L		 2614 if (h->root.root.string)
2615 name = h->root.root.string;
2616 else
2617 name = bfd_elf_sym_name (input_bfd, symtab_hdr, sym,
2618 NULL);
4eca0228 2619 _bfd_error_handler
695344c0 2620 /* xgettext:c-format */
871b3ab2 2621 (_("%pB: relocation %s against STT_GNU_IFUNC "
233cc9c1
L		 2622 "symbol `%s' isn't supported"), input_bfd,
2623 howto->name, name);
cbe950e9
L		 2624 bfd_set_error (bfd_error_bad_value);
2625 return FALSE;
2626
2627 case R_X86_64_32S:
0e1862bb 2628 if (bfd_link_pic (info))
cbe950e9 2629 abort ();
710ab287
L		 2630 goto do_relocation;
2631
248775ba
L		 2632 case R_X86_64_32:
2633 if (ABI_64_P (output_bfd))
2634 goto do_relocation;
17672001 2635 /* FALLTHROUGH */
eed180f8 2636 case R_X86_64_64:
233cc9c1 2637do_ifunc_pointer:
710ab287
L		 2638 if (rel->r_addend != 0)
2639 {
4c544807
L		 2640 if (h->root.root.string)
2641 name = h->root.root.string;
2642 else
2643 name = bfd_elf_sym_name (input_bfd, symtab_hdr,
2644 sym, NULL);
4eca0228 2645 _bfd_error_handler
695344c0 2646 /* xgettext:c-format */
871b3ab2 2647 (_("%pB: relocation %s against STT_GNU_IFUNC "
2dcf00ce
AM		 2648 "symbol `%s' has non-zero addend: %" PRId64),
2649 input_bfd, howto->name, name, (int64_t) rel->r_addend);
710ab287
L		 2650 bfd_set_error (bfd_error_bad_value);
2651 return FALSE;
2652 }
2653
2654 /* Generate dynamic relcoation only when there is a
233cc9c1
L		 2655 non-GOT reference in a shared object or there is no
2656 PLT. */
2657 if ((bfd_link_pic (info) && h->non_got_ref)
2658 || h->plt.offset == (bfd_vma) -1)
710ab287
L		 2659 {
2660 Elf_Internal_Rela outrel;
710ab287
L		 2661 asection *sreloc;
2662
c25bc9fc
L		 2663 /* Need a dynamic relocation to get the real function
2664 address. */
710ab287
L		 2665 outrel.r_offset = _bfd_elf_section_offset (output_bfd,
2666 info,
2667 input_section,
2668 rel->r_offset);
2669 if (outrel.r_offset == (bfd_vma) -1
2670 || outrel.r_offset == (bfd_vma) -2)
2671 abort ();
2672
2673 outrel.r_offset += (input_section->output_section->vma
2674 + input_section->output_offset);
2675
cf1070f1 2676 if (POINTER_LOCAL_IFUNC_P (info, h))
710ab287 2677 {
871b3ab2 2678 info->callbacks->minfo (_("Local IFUNC function `%s' in %pB\n"),
6322e5c5
L		 2679 h->root.root.string,
2680 h->root.u.def.section->owner);
2681
710ab287 2682 /* This symbol is resolved locally. */
56b8aada
L		 2683 outrel.r_info = htab->r_info (0, R_X86_64_IRELATIVE);
2684 outrel.r_addend = (h->root.u.def.value
2685 + h->root.u.def.section->output_section->vma
2686 + h->root.u.def.section->output_offset);
710ab287
L		 2687 }
2688 else
2689 {
351f65ca 2690 outrel.r_info = htab->r_info (h->dynindx, r_type);
710ab287
L		 2691 outrel.r_addend = 0;
2692 }
2693
233cc9c1
L		 2694 /* Dynamic relocations are stored in
2695 1. .rela.ifunc section in PIC object.
2696 2. .rela.got section in dynamic executable.
2697 3. .rela.iplt section in static executable. */
2698 if (bfd_link_pic (info))
2699 sreloc = htab->elf.irelifunc;
2700 else if (htab->elf.splt != NULL)
2701 sreloc = htab->elf.srelgot;
2702 else
2703 sreloc = htab->elf.irelplt;
351f65ca 2704 elf_append_rela (output_bfd, sreloc, &outrel);
710ab287
L		 2705
2706 /* If this reloc is against an external symbol, we
2707 do not want to fiddle with the addend. Otherwise,
2708 we need to include the symbol value so that it
2709 becomes an addend for the dynamic reloc. For an
2710 internal symbol, we have updated addend. */
56b8aada 2711 continue;
710ab287 2712 }
17672001 2713 /* FALLTHROUGH */
cbe950e9 2714 case R_X86_64_PC32:
c3320543 2715 case R_X86_64_PC32_BND:
cbe950e9
L		 2716 case R_X86_64_PC64:
2717 case R_X86_64_PLT32:
c3320543 2718 case R_X86_64_PLT32_BND:
cbe950e9 2719 goto do_relocation;
cbe950e9
L		 2720 }
2721 }
2722
aec6b87e 2723 resolved_to_zero = (eh != NULL
c5bce5c6 2724 && UNDEFINED_WEAK_RESOLVED_TO_ZERO (info, eh));
aec6b87e 2725
70256ad8
AJ		 2726 /* When generating a shared object, the relocations handled here are
2727 copied into the output file to be resolved at run time. */
2728 switch (r_type)
2729 {
2730 case R_X86_64_GOT32:
7b81dfbb 2731 case R_X86_64_GOT64:
70256ad8
AJ		 2732 /* Relocation is to the entry for this symbol in the global
2733 offset table. */
70256ad8 2734 case R_X86_64_GOTPCREL:
56ceb5b5
L		 2735 case R_X86_64_GOTPCRELX:
2736 case R_X86_64_REX_GOTPCRELX:
7b81dfbb
AJ		 2737 case R_X86_64_GOTPCREL64:
2738 /* Use global offset table entry as symbol value. */
2739 case R_X86_64_GOTPLT64:
de194d85 2740 /* This is obsolete and treated the same as GOT64. */
6de2ae4a 2741 base_got = htab->elf.sgot;
7b81dfbb 2742
6de2ae4a 2743 if (htab->elf.sgot == NULL)
c434dee6 2744 abort ();
053579d7 2745
9e9821dd 2746 relative_reloc = FALSE;
51e0a107 2747 if (h != NULL)
70256ad8 2748 {
c434dee6 2749 off = h->got.offset;
7b81dfbb 2750 if (h->needs_plt
eed180f8 2751 && h->plt.offset != (bfd_vma)-1
7b81dfbb
AJ		 2752 && off == (bfd_vma)-1)
2753 {
2754 /* We can't use h->got.offset here to save
2755 state, or even just remember the offset, as
2756 finish_dynamic_symbol would use that as offset into
2757 .got. */
38b12349 2758 bfd_vma plt_index = (h->plt.offset / plt_entry_size
765e526c 2759 - htab->plt.has_plt0);
7b81dfbb 2760 off = (plt_index + 3) * GOT_ENTRY_SIZE;
6de2ae4a 2761 base_got = htab->elf.sgotplt;
7b81dfbb
AJ		 2762 }
2763
2eba97c2 2764 if (RESOLVED_LOCALLY_P (info, h, htab))
51e0a107 2765 {
2eba97c2
L		 2766 /* We must initialize this entry in the global offset
2767 table. Since the offset must always be a multiple
2768 of 8, we use the least significant bit to record
2769 whether we have initialized it already.
51e0a107
JH		 2770
2771 When doing a dynamic link, we create a .rela.got
407443a3
AJ		 2772 relocation entry to initialize the value. This is
2773 done in the finish_dynamic_symbol routine. */
51e0a107
JH		 2774 if ((off & 1) != 0)
2775 off &= ~1;
2776 else
2777 {
2778 bfd_put_64 (output_bfd, relocation,
7b81dfbb
AJ		 2779 base_got->contents + off);
2780 /* Note that this is harmless for the GOTPLT64 case,
eed180f8 2781 as -1 | 1 still is -1. */
51e0a107 2782 h->got.offset |= 1;
9e9821dd 2783
f70656b2 2784 if (GENERATE_RELATIVE_RELOC_P (info, h))
9e9821dd
L		 2785 {
2786 /* If this symbol isn't dynamic in PIC,
2787 generate R_X86_64_RELATIVE here. */
2788 eh->no_finish_dynamic_symbol = 1;
2789 relative_reloc = TRUE;
2790 }
51e0a107
JH		 2791 }
2792 }
053579d7 2793 else
b34976b6 2794 unresolved_reloc = FALSE;
70256ad8 2795 }
51e0a107
JH		 2796 else
2797 {
c434dee6
AJ		 2798 if (local_got_offsets == NULL)
2799 abort ();
51e0a107
JH		 2800
2801 off = local_got_offsets[r_symndx];
2802
2803 /* The offset must always be a multiple of 8. We use
407443a3
AJ		 2804 the least significant bit to record whether we have
2805 already generated the necessary reloc. */
51e0a107
JH		 2806 if ((off & 1) != 0)
2807 off &= ~1;
2808 else
2809 {
c434dee6 2810 bfd_put_64 (output_bfd, relocation,
7b81dfbb 2811 base_got->contents + off);
9e9821dd 2812 local_got_offsets[r_symndx] |= 1;
51e0a107 2813
0e1862bb 2814 if (bfd_link_pic (info))
9e9821dd 2815 relative_reloc = TRUE;
51e0a107 2816 }
51e0a107 2817 }
6a2bda3f 2818
9e9821dd
L		 2819 if (relative_reloc)
2820 {
2821 asection *s;
2822 Elf_Internal_Rela outrel;
2823
2824 /* We need to generate a R_X86_64_RELATIVE reloc
2825 for the dynamic linker. */
2826 s = htab->elf.srelgot;
2827 if (s == NULL)
2828 abort ();
2829
2830 outrel.r_offset = (base_got->output_section->vma
2831 + base_got->output_offset
2832 + off);
2833 outrel.r_info = htab->r_info (0, R_X86_64_RELATIVE);
2834 outrel.r_addend = relocation;
2835 elf_append_rela (output_bfd, s, &outrel);
2836 }
2837
c434dee6
AJ		 2838 if (off >= (bfd_vma) -2)
2839 abort ();
2840
7b81dfbb
AJ		 2841 relocation = base_got->output_section->vma
2842 + base_got->output_offset + off;
56ceb5b5
L		 2843 if (r_type != R_X86_64_GOTPCREL
2844 && r_type != R_X86_64_GOTPCRELX
2845 && r_type != R_X86_64_REX_GOTPCRELX
2846 && r_type != R_X86_64_GOTPCREL64)
6de2ae4a
L		 2847 relocation -= htab->elf.sgotplt->output_section->vma
2848 - htab->elf.sgotplt->output_offset;
c434dee6 2849
70256ad8
AJ		 2850 break;
2851
d6ab8113
JB		 2852 case R_X86_64_GOTOFF64:
2853 /* Relocation is relative to the start of the global offset
2854 table. */
2855
3d949995
L		 2856 /* Check to make sure it isn't a protected function or data
2857 symbol for shared library since it may not be local when
e3c0e327
L		 2858 used as function address or with copy relocation. We also
2859 need to make sure that a symbol is referenced locally. */
0e1862bb 2860 if (bfd_link_pic (info) && h)
d6ab8113 2861 {
e3c0e327
L		 2862 if (!h->def_regular)
2863 {
2864 const char *v;
2865
2866 switch (ELF_ST_VISIBILITY (h->other))
2867 {
2868 case STV_HIDDEN:
2869 v = _("hidden symbol");
2870 break;
2871 case STV_INTERNAL:
2872 v = _("internal symbol");
2873 break;
2874 case STV_PROTECTED:
2875 v = _("protected symbol");
2876 break;
2877 default:
2878 v = _("symbol");
2879 break;
2880 }
2881
4eca0228 2882 _bfd_error_handler
695344c0 2883 /* xgettext:c-format */
871b3ab2 2884 (_("%pB: relocation R_X86_64_GOTOFF64 against undefined %s"
63a5468a 2885 " `%s' can not be used when making a shared object"),
e3c0e327
L		 2886 input_bfd, v, h->root.root.string);
2887 bfd_set_error (bfd_error_bad_value);
2888 return FALSE;
2889 }
0e1862bb 2890 else if (!bfd_link_executable (info)
6999821f 2891 && !SYMBOL_REFERENCES_LOCAL_P (info, h)
e3c0e327
L		 2892 && (h->type == STT_FUNC
2893 || h->type == STT_OBJECT)
2894 && ELF_ST_VISIBILITY (h->other) == STV_PROTECTED)
2895 {
4eca0228 2896 _bfd_error_handler
695344c0 2897 /* xgettext:c-format */
871b3ab2 2898 (_("%pB: relocation R_X86_64_GOTOFF64 against protected %s"
63a5468a 2899 " `%s' can not be used when making a shared object"),
e3c0e327
L		 2900 input_bfd,
2901 h->type == STT_FUNC ? "function" : "data",
2902 h->root.root.string);
2903 bfd_set_error (bfd_error_bad_value);
d6ab8113 2904 return FALSE;
e3c0e327 2905 }
d6ab8113
JB		 2906 }
2907
2908 /* Note that sgot is not involved in this
2909 calculation. We always want the start of .got.plt. If we
2910 defined _GLOBAL_OFFSET_TABLE_ in a different way, as is
2911 permitted by the ABI, we might have to change this
2912 calculation. */
6de2ae4a
L		 2913 relocation -= htab->elf.sgotplt->output_section->vma
2914 + htab->elf.sgotplt->output_offset;
d6ab8113
JB		 2915 break;
2916
2917 case R_X86_64_GOTPC32:
7b81dfbb 2918 case R_X86_64_GOTPC64:
d6ab8113 2919 /* Use global offset table as symbol value. */
6de2ae4a
L		 2920 relocation = htab->elf.sgotplt->output_section->vma
2921 + htab->elf.sgotplt->output_offset;
d6ab8113
JB		 2922 unresolved_reloc = FALSE;
2923 break;
7b81dfbb
AJ		 2924
2925 case R_X86_64_PLTOFF64:
2926 /* Relocation is PLT entry relative to GOT. For local
2927 symbols it's the symbol itself relative to GOT. */
eed180f8 2928 if (h != NULL
7b81dfbb 2929 /* See PLT32 handling. */
9d734efa
L		 2930 && (h->plt.offset != (bfd_vma) -1
2931 || eh->plt_got.offset != (bfd_vma) -1)
6de2ae4a 2932 && htab->elf.splt != NULL)
7b81dfbb 2933 {
9d734efa
L		 2934 if (eh->plt_got.offset != (bfd_vma) -1)
2935 {
2936 /* Use the GOT PLT. */
2937 resolved_plt = htab->plt_got;
2938 plt_offset = eh->plt_got.offset;
2939 }
f2c29a16 2940 else if (htab->plt_second != NULL)
0ff2b86e 2941 {
f2c29a16
L		 2942 resolved_plt = htab->plt_second;
2943 plt_offset = eh->plt_second.offset;
0ff2b86e
L		 2944 }
2945 else
2946 {
2947 resolved_plt = htab->elf.splt;
2948 plt_offset = h->plt.offset;
2949 }
2950
2951 relocation = (resolved_plt->output_section->vma
2952 + resolved_plt->output_offset
2953 + plt_offset);
7b81dfbb
AJ		 2954 unresolved_reloc = FALSE;
2955 }
2956
6de2ae4a
L		 2957 relocation -= htab->elf.sgotplt->output_section->vma
2958 + htab->elf.sgotplt->output_offset;
7b81dfbb 2959 break;
d6ab8113 2960
70256ad8 2961 case R_X86_64_PLT32:
c3320543 2962 case R_X86_64_PLT32_BND:
70256ad8
AJ		 2963 /* Relocation is to the entry for this symbol in the
2964 procedure linkage table. */
2965
2966 /* Resolve a PLT32 reloc against a local symbol directly,
407443a3 2967 without using the procedure linkage table. */
70256ad8
AJ		 2968 if (h == NULL)
2969 break;
2970
dd7e64d4
L		 2971 if ((h->plt.offset == (bfd_vma) -1
2972 && eh->plt_got.offset == (bfd_vma) -1)
6de2ae4a 2973 || htab->elf.splt == NULL)
70256ad8
AJ		 2974 {
2975 /* We didn't make a PLT entry for this symbol. This
407443a3
AJ		 2976 happens when statically linking PIC code, or when
2977 using -Bsymbolic. */
70256ad8
AJ		 2978 break;
2979 }
2980
451875b4 2981use_plt:
dd7e64d4 2982 if (h->plt.offset != (bfd_vma) -1)
0ff2b86e 2983 {
f2c29a16 2984 if (htab->plt_second != NULL)
dd7e64d4 2985 {
f2c29a16
L		 2986 resolved_plt = htab->plt_second;
2987 plt_offset = eh->plt_second.offset;
dd7e64d4
L		 2988 }
2989 else
2990 {
2991 resolved_plt = htab->elf.splt;
2992 plt_offset = h->plt.offset;
2993 }
0ff2b86e
L		 2994 }
2995 else
2996 {
dd7e64d4
L		 2997 /* Use the GOT PLT. */
2998 resolved_plt = htab->plt_got;
2999 plt_offset = eh->plt_got.offset;
0ff2b86e
L		 3000 }
3001
3002 relocation = (resolved_plt->output_section->vma
3003 + resolved_plt->output_offset
3004 + plt_offset);
b34976b6 3005 unresolved_reloc = FALSE;
70256ad8
AJ		 3006 break;
3007
1788fc08
L		 3008 case R_X86_64_SIZE32:
3009 case R_X86_64_SIZE64:
1788fc08
L		 3010 /* Set to symbol size. */
3011 relocation = st_size;
3012 goto direct;
3013
fd8ab9e5
AJ		 3014 case R_X86_64_PC8:
3015 case R_X86_64_PC16:
3016 case R_X86_64_PC32:
c3320543 3017 case R_X86_64_PC32_BND:
6333bc0d 3018 /* Don't complain about -fPIC if the symbol is undefined when
bd7ab16b
L		 3019 building executable unless it is unresolved weak symbol,
3020 references a dynamic definition in PIE or -z nocopyreloc
3021 is used. */
07d6d2b8 3022 if ((input_section->flags & SEC_ALLOC) != 0
90f487df 3023 && (input_section->flags & SEC_READONLY) != 0
6333bc0d 3024 && h != NULL
aec6b87e 3025 && ((bfd_link_executable (info)
7073b5b9
L		 3026 && ((h->root.type == bfd_link_hash_undefweak
3027 && !resolved_to_zero)
bd7ab16b
L		 3028 || (bfd_link_pie (info)
3029 && !h->def_regular
3030 && h->def_dynamic)
a5b4ee94
L		 3031 || ((info->nocopyreloc
3032 || (eh->def_protected
3033 && elf_has_no_copy_on_protected (h->root.u.def.section->owner)))
7073b5b9
L		 3034 && h->def_dynamic
3035 && !(h->root.u.def.section->flags & SEC_CODE))))
c5bb8910 3036 || bfd_link_dll (info)))
6610a52d 3037 {
41bed6dd 3038 bfd_boolean fail = FALSE;
6999821f 3039 if (SYMBOL_REFERENCES_LOCAL_P (info, h))
41bed6dd
L		 3040 {
3041 /* Symbol is referenced locally. Make sure it is
bd7ab16b
L		 3042 defined locally. */
3043 fail = !(h->def_regular || ELF_COMMON_DEF_P (h));
41bed6dd 3044 }
aec6b87e 3045 else if (!(bfd_link_pie (info)
bc696fd5 3046 && (h->needs_copy || eh->needs_copy)))
41bed6dd 3047 {
9a926d55 3048 /* Symbol doesn't need copy reloc and isn't referenced
bd7ab16b
L		 3049 locally. Address of protected function may not be
3050 reachable at run-time. */
3051 fail = (ELF_ST_VISIBILITY (h->other) == STV_DEFAULT
3052 || (ELF_ST_VISIBILITY (h->other) == STV_PROTECTED
3053 && h->type == STT_FUNC));
41bed6dd
L		 3054 }
3055
3056 if (fail)
aab921ad 3057 return elf_x86_64_need_pic (info, input_bfd, input_section,
338c190a 3058 h, NULL, NULL, howto);
6610a52d 3059 }
451875b4
L		 3060 /* Since x86-64 has PC-relative PLT, we can use PLT in PIE
3061 as function address. */
3062 else if (h != NULL
3063 && (input_section->flags & SEC_CODE) == 0
3064 && bfd_link_pie (info)
3065 && h->type == STT_FUNC
3066 && !h->def_regular
3067 && h->def_dynamic)
3068 goto use_plt;
6610a52d
L		 3069 /* Fall through. */
3070
70256ad8
AJ		 3071 case R_X86_64_8:
3072 case R_X86_64_16:
3073 case R_X86_64_32:
d6ab8113 3074 case R_X86_64_PC64:
6b3db546 3075 case R_X86_64_64:
80643fbc 3076 /* FIXME: The ABI says the linker should make sure the value is
407443a3 3077 the same when it's zeroextended to 64 bit. */
c434dee6 3078
1788fc08 3079direct:
b1e24c02 3080 if ((input_section->flags & SEC_ALLOC) == 0)
c434dee6
AJ		 3081 break;
3082
aebcc8ff
L		 3083 need_copy_reloc_in_pie = (bfd_link_pie (info)
3084 && h != NULL
3085 && (h->needs_copy
3086 || eh->needs_copy
3087 || (h->root.type
3088 == bfd_link_hash_undefined))
3089 && (X86_PCREL_TYPE_P (r_type)
3090 || X86_SIZE_TYPE_P (r_type)));
3091
3092 if (GENERATE_DYNAMIC_RELOCATION_P (info, eh, r_type,
3093 need_copy_reloc_in_pie,
3094 resolved_to_zero, FALSE))
70256ad8
AJ		 3095 {
3096 Elf_Internal_Rela outrel;
b34976b6 3097 bfd_boolean skip, relocate;
c434dee6 3098 asection *sreloc;
70256ad8
AJ		 3099
3100 /* When generating a shared object, these relocations
3101 are copied into the output file to be resolved at run
407443a3 3102 time. */
b34976b6
AM		 3103 skip = FALSE;
3104 relocate = FALSE;
70256ad8 3105
c629eae0
JJ		 3106 outrel.r_offset =
3107 _bfd_elf_section_offset (output_bfd, info, input_section,
c434dee6 3108 rel->r_offset);
c629eae0 3109 if (outrel.r_offset == (bfd_vma) -1)
b34976b6 3110 skip = TRUE;
0fb19cbc 3111 else if (outrel.r_offset == (bfd_vma) -2)
b34976b6 3112 skip = TRUE, relocate = TRUE;
70256ad8
AJ		 3113
3114 outrel.r_offset += (input_section->output_section->vma
3115 + input_section->output_offset);
3116
3117 if (skip)
0bb2d96a 3118 memset (&outrel, 0, sizeof outrel);
c434dee6 3119
e74399c4 3120 else if (COPY_INPUT_RELOC_P (info, h, r_type))
70256ad8 3121 {
351f65ca 3122 outrel.r_info = htab->r_info (h->dynindx, r_type);
c434dee6 3123 outrel.r_addend = rel->r_addend;
70256ad8
AJ		 3124 }
3125 else
3126 {
4c10bbaa
L		 3127 /* This symbol is local, or marked to become local.
3128 When relocation overflow check is disabled, we
3129 convert R_X86_64_32 to dynamic R_X86_64_RELATIVE. */
3130 if (r_type == htab->pointer_r_type
3131 || (r_type == R_X86_64_32
3132 && info->no_reloc_overflow_check))
607c0e09 3133 {
b34976b6 3134 relocate = TRUE;
351f65ca 3135 outrel.r_info = htab->r_info (0, R_X86_64_RELATIVE);
607c0e09
AS		 3136 outrel.r_addend = relocation + rel->r_addend;
3137 }
64d25c44
L		 3138 else if (r_type == R_X86_64_64
3139 && !ABI_64_P (output_bfd))
3140 {
3141 relocate = TRUE;
3142 outrel.r_info = htab->r_info (0,
3143 R_X86_64_RELATIVE64);
3144 outrel.r_addend = relocation + rel->r_addend;
8cf0d2dd
L		 3145 /* Check addend overflow. */
3146 if ((outrel.r_addend & 0x80000000)
3147 != (rel->r_addend & 0x80000000))
3148 {
3149 const char *name;
268a8d3a 3150 int addend = rel->r_addend;
8cf0d2dd
L		 3151 if (h && h->root.root.string)
3152 name = h->root.root.string;
3153 else
3154 name = bfd_elf_sym_name (input_bfd, symtab_hdr,
3155 sym, NULL);
d42c267e
AM		 3156 _bfd_error_handler
3157 /* xgettext:c-format */
871b3ab2 3158 (_("%pB: addend %s%#x in relocation %s against "
2dcf00ce
AM		 3159 "symbol `%s' at %#" PRIx64
3160 " in section `%pA' is out of range"),
d42c267e 3161 input_bfd, addend < 0 ? "-" : "", addend,
2dcf00ce
AM		 3162 howto->name, name, (uint64_t) rel->r_offset,
3163 input_section);
8cf0d2dd
L		 3164 bfd_set_error (bfd_error_bad_value);
3165 return FALSE;
3166 }
64d25c44 3167 }
607c0e09
AS		 3168 else
3169 {
3170 long sindx;
3171
8517fae7 3172 if (bfd_is_abs_section (sec))
607c0e09
AS		 3173 sindx = 0;
3174 else if (sec == NULL || sec->owner == NULL)
3175 {
3176 bfd_set_error (bfd_error_bad_value);
b34976b6 3177 return FALSE;
607c0e09
AS		 3178 }
3179 else
3180 {
3181 asection *osec;
3182
74541ad4
AM		 3183 /* We are turning this relocation into one
3184 against a section symbol. It would be
3185 proper to subtract the symbol's value,
3186 osec->vma, from the emitted reloc addend,
3187 but ld.so expects buggy relocs. */
607c0e09
AS		 3188 osec = sec->output_section;
3189 sindx = elf_section_data (osec)->dynindx;
74541ad4
AM		 3190 if (sindx == 0)
3191 {
3192 asection *oi = htab->elf.text_index_section;
3193 sindx = elf_section_data (oi)->dynindx;
3194 }
3195 BFD_ASSERT (sindx != 0);
607c0e09
AS		 3196 }
3197
351f65ca 3198 outrel.r_info = htab->r_info (sindx, r_type);
607c0e09
AS		 3199 outrel.r_addend = relocation + rel->r_addend;
3200 }
70256ad8
AJ		 3201 }
3202
cbe950e9 3203 sreloc = elf_section_data (input_section)->sreloc;
d8045f23 3204
62d78908
L		 3205 if (sreloc == NULL || sreloc->contents == NULL)
3206 {
3207 r = bfd_reloc_notsupported;
3208 goto check_relocation_error;
3209 }
c434dee6 3210
351f65ca 3211 elf_append_rela (output_bfd, sreloc, &outrel);
70256ad8
AJ		 3212
3213 /* If this reloc is against an external symbol, we do
3214 not want to fiddle with the addend. Otherwise, we
3215 need to include the symbol value so that it becomes
3216 an addend for the dynamic reloc. */
0f88be7a 3217 if (! relocate)
70256ad8
AJ		 3218 continue;
3219 }
3220
3221 break;
3222
bffbf940 3223 case R_X86_64_TLSGD:
67a4f2b7
AO		 3224 case R_X86_64_GOTPC32_TLSDESC:
3225 case R_X86_64_TLSDESC_CALL:
bffbf940 3226 case R_X86_64_GOTTPOFF:
bffbf940
JJ		 3227 tls_type = GOT_UNKNOWN;
3228 if (h == NULL && local_got_offsets)
0afcef53 3229 tls_type = elf_x86_local_got_tls_type (input_bfd) [r_symndx];
bffbf940 3230 else if (h != NULL)
0afcef53 3231 tls_type = elf_x86_hash_entry (h)->tls_type;
142411ca 3232
419414ea 3233 r_type_tls = r_type;
351f65ca
L		 3234 if (! elf_x86_64_tls_transition (info, input_bfd,
3235 input_section, contents,
3236 symtab_hdr, sym_hashes,
419414ea 3237 &r_type_tls, tls_type, rel,
bedfd056 3238 relend, h, r_symndx, TRUE))
534a31f6 3239 return FALSE;
bffbf940 3240
419414ea 3241 if (r_type_tls == R_X86_64_TPOFF32)
bffbf940 3242 {
142411ca
L		 3243 bfd_vma roff = rel->r_offset;
3244
bffbf940 3245 BFD_ASSERT (! unresolved_reloc);
142411ca 3246
419414ea 3247 if (r_type == R_X86_64_TLSGD)
bffbf940 3248 {
52bc799a 3249 /* GD->LE transition. For 64bit, change
e2cbcd91
L		 3250 .byte 0x66; leaq foo@tlsgd(%rip), %rdi
3251 .word 0x6666; rex64; call __tls_get_addr@PLT
3252 or
3253 .byte 0x66; leaq foo@tlsgd(%rip), %rdi
3254 .byte 0x66; rex64
3255 call *__tls_get_addr@GOTPCREL(%rip)
3256 which may be converted to
3257 addr32 call __tls_get_addr
52bc799a 3258 into:
e2cbcd91
L		 3259 movq %fs:0, %rax
3260 leaq foo@tpoff(%rax), %rax
52bc799a 3261 For 32bit, change
e2cbcd91
L		 3262 leaq foo@tlsgd(%rip), %rdi
3263 .word 0x6666; rex64; call __tls_get_addr@PLT
3264 or
3265 leaq foo@tlsgd(%rip), %rdi
3266 .byte 0x66; rex64
3267 call *__tls_get_addr@GOTPCREL(%rip)
3268 which may be converted to
3269 addr32 call __tls_get_addr
52bc799a 3270 into:
e2cbcd91
L		 3271 movl %fs:0, %eax
3272 leaq foo@tpoff(%rax), %rax
5c98a14e 3273 For largepic, change:
e2cbcd91
L		 3274 leaq foo@tlsgd(%rip), %rdi
3275 movabsq $__tls_get_addr@pltoff, %rax
3276 addq %r15, %rax
3277 call *%rax
5c98a14e 3278 into:
e2cbcd91
L		 3279 movq %fs:0, %rax
3280 leaq foo@tpoff(%rax), %rax
3281 nopw 0x0(%rax,%rax,1) */
5c98a14e 3282 int largepic = 0;
e2cbcd91 3283 if (ABI_64_P (output_bfd))
5c98a14e 3284 {
e2cbcd91
L		 3285 if (contents[roff + 5] == 0xb8)
3286 {
3287 memcpy (contents + roff - 3,
3288 "\x64\x48\x8b\x04\x25\0\0\0\0\x48\x8d\x80"
3289 "\0\0\0\0\x66\x0f\x1f\x44\0", 22);
3290 largepic = 1;
3291 }
3292 else
3293 memcpy (contents + roff - 4,
3294 "\x64\x48\x8b\x04\x25\0\0\0\0\x48\x8d\x80\0\0\0",
3295 16);
5c98a14e 3296 }
52bc799a
L		 3297 else
3298 memcpy (contents + roff - 3,
3299 "\x64\x8b\x04\x25\0\0\0\0\x48\x8d\x80\0\0\0",
3300 15);
eb4ff4d6 3301 bfd_put_32 (output_bfd,
351f65ca 3302 elf_x86_64_tpoff (info, relocation),
5c98a14e 3303 contents + roff + 8 + largepic);
e2cbcd91
L		 3304 /* Skip R_X86_64_PC32, R_X86_64_PLT32,
3305 R_X86_64_GOTPCRELX and R_X86_64_PLTOFF64. */
bffbf940 3306 rel++;
60f2e42e 3307 wrel++;
bffbf940
JJ		 3308 continue;
3309 }
419414ea 3310 else if (r_type == R_X86_64_GOTPC32_TLSDESC)
67a4f2b7
AO		 3311 {
3312 /* GDesc -> LE transition.
3313 It's originally something like:
3314 leaq x@tlsdesc(%rip), %rax
3315
3316 Change it to:
c9736ba0 3317 movl $x@tpoff, %rax. */
67a4f2b7 3318
c9736ba0 3319 unsigned int val, type;
67a4f2b7 3320
67a4f2b7 3321 type = bfd_get_8 (input_bfd, contents + roff - 3);
67a4f2b7 3322 val = bfd_get_8 (input_bfd, contents + roff - 1);
67a4f2b7
AO		 3323 bfd_put_8 (output_bfd, 0x48 | ((type >> 2) & 1),
3324 contents + roff - 3);
3325 bfd_put_8 (output_bfd, 0xc7, contents + roff - 2);
3326 bfd_put_8 (output_bfd, 0xc0 | ((val >> 3) & 7),
3327 contents + roff - 1);
eb4ff4d6 3328 bfd_put_32 (output_bfd,
351f65ca 3329 elf_x86_64_tpoff (info, relocation),
67a4f2b7
AO		 3330 contents + roff);
3331 continue;
3332 }
419414ea 3333 else if (r_type == R_X86_64_TLSDESC_CALL)
67a4f2b7
AO		 3334 {
3335 /* GDesc -> LE transition.
3336 It's originally:
3337 call *(%rax)
3338 Turn it into:
142411ca 3339 xchg %ax,%ax. */
10efb593 3340 bfd_put_8 (output_bfd, 0x66, contents + roff);
67a4f2b7
AO		 3341 bfd_put_8 (output_bfd, 0x90, contents + roff + 1);
3342 continue;
3343 }
419414ea 3344 else if (r_type == R_X86_64_GOTTPOFF)
bffbf940 3345 {
bffbf940 3346 /* IE->LE transition:
cf61b747 3347 For 64bit, originally it can be one of:
bffbf940
JJ		 3348 movq foo@gottpoff(%rip), %reg
3349 addq foo@gottpoff(%rip), %reg
3350 We change it into:
3351 movq $foo, %reg
3352 leaq foo(%reg), %reg
cf61b747
L		 3353 addq $foo, %reg.
3354 For 32bit, originally it can be one of:
3355 movq foo@gottpoff(%rip), %reg
3356 addl foo@gottpoff(%rip), %reg
3357 We change it into:
3358 movq $foo, %reg
3359 leal foo(%reg), %reg
3360 addl $foo, %reg. */
142411ca
L		 3361
3362 unsigned int val, type, reg;
3363
cf61b747
L		 3364 if (roff >= 3)
3365 val = bfd_get_8 (input_bfd, contents + roff - 3);
3366 else
3367 val = 0;
142411ca
L		 3368 type = bfd_get_8 (input_bfd, contents + roff - 2);
3369 reg = bfd_get_8 (input_bfd, contents + roff - 1);
bffbf940 3370 reg >>= 3;
bffbf940
JJ		 3371 if (type == 0x8b)
3372 {
3373 /* movq */
3374 if (val == 0x4c)
3375 bfd_put_8 (output_bfd, 0x49,
142411ca 3376 contents + roff - 3);
4a4c5f25
L		 3377 else if (!ABI_64_P (output_bfd) && val == 0x44)
3378 bfd_put_8 (output_bfd, 0x41,
3379 contents + roff - 3);
bffbf940 3380 bfd_put_8 (output_bfd, 0xc7,
142411ca 3381 contents + roff - 2);
bffbf940 3382 bfd_put_8 (output_bfd, 0xc0 | reg,
142411ca 3383 contents + roff - 1);
bffbf940
JJ		 3384 }
3385 else if (reg == 4)
3386 {
cf61b747
L		 3387 /* addq/addl -> addq/addl - addressing with %rsp/%r12
3388 is special */
bffbf940
JJ		 3389 if (val == 0x4c)
3390 bfd_put_8 (output_bfd, 0x49,
142411ca 3391 contents + roff - 3);
4a4c5f25
L		 3392 else if (!ABI_64_P (output_bfd) && val == 0x44)
3393 bfd_put_8 (output_bfd, 0x41,
3394 contents + roff - 3);
bffbf940 3395 bfd_put_8 (output_bfd, 0x81,
142411ca 3396 contents + roff - 2);
bffbf940 3397 bfd_put_8 (output_bfd, 0xc0 | reg,
142411ca 3398 contents + roff - 1);
bffbf940
JJ		 3399 }
3400 else
3401 {
cf61b747 3402 /* addq/addl -> leaq/leal */
bffbf940
JJ		 3403 if (val == 0x4c)
3404 bfd_put_8 (output_bfd, 0x4d,
142411ca 3405 contents + roff - 3);
4a4c5f25
L		 3406 else if (!ABI_64_P (output_bfd) && val == 0x44)
3407 bfd_put_8 (output_bfd, 0x45,
3408 contents + roff - 3);
bffbf940 3409 bfd_put_8 (output_bfd, 0x8d,
142411ca 3410 contents + roff - 2);
bffbf940 3411 bfd_put_8 (output_bfd, 0x80 | reg | (reg << 3),
142411ca 3412 contents + roff - 1);
bffbf940 3413 }
eb4ff4d6 3414 bfd_put_32 (output_bfd,
351f65ca 3415 elf_x86_64_tpoff (info, relocation),
142411ca 3416 contents + roff);
bffbf940
JJ		 3417 continue;
3418 }
142411ca
L		 3419 else
3420 BFD_ASSERT (FALSE);
bffbf940
JJ		 3421 }
3422
6de2ae4a 3423 if (htab->elf.sgot == NULL)
bffbf940
JJ		 3424 abort ();
3425
3426 if (h != NULL)
67a4f2b7
AO		 3427 {
3428 off = h->got.offset;
0afcef53 3429 offplt = elf_x86_hash_entry (h)->tlsdesc_got;
67a4f2b7 3430 }
bffbf940
JJ		 3431 else
3432 {
3433 if (local_got_offsets == NULL)
3434 abort ();
3435
3436 off = local_got_offsets[r_symndx];
67a4f2b7 3437 offplt = local_tlsdesc_gotents[r_symndx];
bffbf940
JJ		 3438 }
3439
3440 if ((off & 1) != 0)
3441 off &= ~1;
26e41594 3442 else
bffbf940
JJ		 3443 {
3444 Elf_Internal_Rela outrel;
bffbf940 3445 int dr_type, indx;
67a4f2b7 3446 asection *sreloc;
bffbf940 3447
6de2ae4a 3448 if (htab->elf.srelgot == NULL)
bffbf940
JJ		 3449 abort ();
3450
67a4f2b7
AO		 3451 indx = h && h->dynindx != -1 ? h->dynindx : 0;
3452
3453 if (GOT_TLS_GDESC_P (tls_type))
3454 {
351f65ca 3455 outrel.r_info = htab->r_info (indx, R_X86_64_TLSDESC);
67a4f2b7 3456 BFD_ASSERT (htab->sgotplt_jump_table_size + offplt
6de2ae4a
L		 3457 + 2 * GOT_ENTRY_SIZE <= htab->elf.sgotplt->size);
3458 outrel.r_offset = (htab->elf.sgotplt->output_section->vma
3459 + htab->elf.sgotplt->output_offset
67a4f2b7
AO		 3460 + offplt
3461 + htab->sgotplt_jump_table_size);
6de2ae4a 3462 sreloc = htab->elf.srelplt;
67a4f2b7 3463 if (indx == 0)
0afcef53 3464 outrel.r_addend = relocation - _bfd_x86_elf_dtpoff_base (info);
67a4f2b7
AO		 3465 else
3466 outrel.r_addend = 0;
351f65ca 3467 elf_append_rela (output_bfd, sreloc, &outrel);
67a4f2b7
AO		 3468 }
3469
6de2ae4a 3470 sreloc = htab->elf.srelgot;
67a4f2b7 3471
6de2ae4a
L		 3472 outrel.r_offset = (htab->elf.sgot->output_section->vma
3473 + htab->elf.sgot->output_offset + off);
bffbf940 3474
67a4f2b7 3475 if (GOT_TLS_GD_P (tls_type))
bffbf940 3476 dr_type = R_X86_64_DTPMOD64;
67a4f2b7
AO		 3477 else if (GOT_TLS_GDESC_P (tls_type))
3478 goto dr_done;
bffbf940
JJ		 3479 else
3480 dr_type = R_X86_64_TPOFF64;
3481
6de2ae4a 3482 bfd_put_64 (output_bfd, 0, htab->elf.sgot->contents + off);
bffbf940 3483 outrel.r_addend = 0;
67a4f2b7
AO		 3484 if ((dr_type == R_X86_64_TPOFF64
3485 || dr_type == R_X86_64_TLSDESC) && indx == 0)
0afcef53 3486 outrel.r_addend = relocation - _bfd_x86_elf_dtpoff_base (info);
351f65ca 3487 outrel.r_info = htab->r_info (indx, dr_type);
bffbf940 3488
351f65ca 3489 elf_append_rela (output_bfd, sreloc, &outrel);
bffbf940 3490
67a4f2b7 3491 if (GOT_TLS_GD_P (tls_type))
bffbf940
JJ		 3492 {
3493 if (indx == 0)
3494 {
d40d037c 3495 BFD_ASSERT (! unresolved_reloc);
bffbf940 3496 bfd_put_64 (output_bfd,
0afcef53 3497 relocation - _bfd_x86_elf_dtpoff_base (info),
6de2ae4a 3498 htab->elf.sgot->contents + off + GOT_ENTRY_SIZE);
bffbf940
JJ		 3499 }
3500 else
3501 {
3502 bfd_put_64 (output_bfd, 0,
6de2ae4a 3503 htab->elf.sgot->contents + off + GOT_ENTRY_SIZE);
351f65ca 3504 outrel.r_info = htab->r_info (indx,
bffbf940
JJ		 3505 R_X86_64_DTPOFF64);
3506 outrel.r_offset += GOT_ENTRY_SIZE;
351f65ca 3507 elf_append_rela (output_bfd, sreloc,
464d3bd4 3508 &outrel);
bffbf940
JJ		 3509 }
3510 }
3511
67a4f2b7 3512 dr_done:
bffbf940
JJ		 3513 if (h != NULL)
3514 h->got.offset |= 1;
3515 else
3516 local_got_offsets[r_symndx] |= 1;
3517 }
3518
67a4f2b7
AO		 3519 if (off >= (bfd_vma) -2
3520 && ! GOT_TLS_GDESC_P (tls_type))
bffbf940 3521 abort ();
419414ea 3522 if (r_type_tls == r_type)
bffbf940 3523 {
67a4f2b7
AO		 3524 if (r_type == R_X86_64_GOTPC32_TLSDESC
3525 || r_type == R_X86_64_TLSDESC_CALL)
6de2ae4a
L		 3526 relocation = htab->elf.sgotplt->output_section->vma
3527 + htab->elf.sgotplt->output_offset
67a4f2b7
AO		 3528 + offplt + htab->sgotplt_jump_table_size;
3529 else
6de2ae4a
L		 3530 relocation = htab->elf.sgot->output_section->vma
3531 + htab->elf.sgot->output_offset + off;
b34976b6 3532 unresolved_reloc = FALSE;
bffbf940 3533 }
142411ca 3534 else
67a4f2b7 3535 {
142411ca 3536 bfd_vma roff = rel->r_offset;
67a4f2b7 3537
419414ea 3538 if (r_type == R_X86_64_TLSGD)
142411ca 3539 {
52bc799a 3540 /* GD->IE transition. For 64bit, change
e2cbcd91
L		 3541 .byte 0x66; leaq foo@tlsgd(%rip), %rdi
3542 .word 0x6666; rex64; call __tls_get_addr@PLT
3543 or
3544 .byte 0x66; leaq foo@tlsgd(%rip), %rdi
3545 .byte 0x66; rex64
3546 call *__tls_get_addr@GOTPCREL(%rip
3547 which may be converted to
3548 addr32 call __tls_get_addr
52bc799a 3549 into:
e2cbcd91
L		 3550 movq %fs:0, %rax
3551 addq foo@gottpoff(%rip), %rax
52bc799a 3552 For 32bit, change
e2cbcd91
L		 3553 leaq foo@tlsgd(%rip), %rdi
3554 .word 0x6666; rex64; call __tls_get_addr@PLT
3555 or
3556 leaq foo@tlsgd(%rip), %rdi
3557 .byte 0x66; rex64;
3558 call *__tls_get_addr@GOTPCREL(%rip)
3559 which may be converted to
3560 addr32 call __tls_get_addr
52bc799a 3561 into:
e2cbcd91
L		 3562 movl %fs:0, %eax
3563 addq foo@gottpoff(%rip), %rax
5c98a14e 3564 For largepic, change:
e2cbcd91
L		 3565 leaq foo@tlsgd(%rip), %rdi
3566 movabsq $__tls_get_addr@pltoff, %rax
3567 addq %r15, %rax
3568 call *%rax
5c98a14e 3569 into:
e2cbcd91
L		 3570 movq %fs:0, %rax
3571 addq foo@gottpoff(%rax), %rax
3572 nopw 0x0(%rax,%rax,1) */
5c98a14e 3573 int largepic = 0;
e2cbcd91 3574 if (ABI_64_P (output_bfd))
5c98a14e 3575 {
e2cbcd91
L		 3576 if (contents[roff + 5] == 0xb8)
3577 {
3578 memcpy (contents + roff - 3,
3579 "\x64\x48\x8b\x04\x25\0\0\0\0\x48\x03\x05"
3580 "\0\0\0\0\x66\x0f\x1f\x44\0", 22);
3581 largepic = 1;
3582 }
3583 else
3584 memcpy (contents + roff - 4,
3585 "\x64\x48\x8b\x04\x25\0\0\0\0\x48\x03\x05\0\0\0",
3586 16);
5c98a14e 3587 }
52bc799a
L		 3588 else
3589 memcpy (contents + roff - 3,
3590 "\x64\x8b\x04\x25\0\0\0\0\x48\x03\x05\0\0\0",
3591 15);
142411ca 3592
6de2ae4a
L		 3593 relocation = (htab->elf.sgot->output_section->vma
3594 + htab->elf.sgot->output_offset + off
142411ca 3595 - roff
5c98a14e 3596 - largepic
142411ca
L		 3597 - input_section->output_section->vma
3598 - input_section->output_offset
3599 - 12);
3600 bfd_put_32 (output_bfd, relocation,
5c98a14e
JJ		 3601 contents + roff + 8 + largepic);
3602 /* Skip R_X86_64_PLT32/R_X86_64_PLTOFF64. */
142411ca 3603 rel++;
60f2e42e 3604 wrel++;
142411ca
L		 3605 continue;
3606 }
419414ea 3607 else if (r_type == R_X86_64_GOTPC32_TLSDESC)
142411ca
L		 3608 {
3609 /* GDesc -> IE transition.
3610 It's originally something like:
3611 leaq x@tlsdesc(%rip), %rax
67a4f2b7 3612
142411ca 3613 Change it to:
c9736ba0 3614 movq x@gottpoff(%rip), %rax # before xchg %ax,%ax. */
67a4f2b7 3615
142411ca
L		 3616 /* Now modify the instruction as appropriate. To
3617 turn a leaq into a movq in the form we use it, it
3618 suffices to change the second byte from 0x8d to
3619 0x8b. */
3620 bfd_put_8 (output_bfd, 0x8b, contents + roff - 2);
3621
3622 bfd_put_32 (output_bfd,
6de2ae4a
L		 3623 htab->elf.sgot->output_section->vma
3624 + htab->elf.sgot->output_offset + off
142411ca
L		 3625 - rel->r_offset
3626 - input_section->output_section->vma
3627 - input_section->output_offset
3628 - 4,
3629 contents + roff);
3630 continue;
3631 }
419414ea 3632 else if (r_type == R_X86_64_TLSDESC_CALL)
142411ca
L		 3633 {
3634 /* GDesc -> IE transition.
3635 It's originally:
3636 call *(%rax)
3637
3638 Change it to:
c9736ba0 3639 xchg %ax, %ax. */
142411ca 3640
142411ca
L		 3641 bfd_put_8 (output_bfd, 0x66, contents + roff);
3642 bfd_put_8 (output_bfd, 0x90, contents + roff + 1);
3643 continue;
3644 }
3645 else
3646 BFD_ASSERT (FALSE);
67a4f2b7 3647 }
bffbf940
JJ		 3648 break;
3649
3650 case R_X86_64_TLSLD:
351f65ca
L		 3651 if (! elf_x86_64_tls_transition (info, input_bfd,
3652 input_section, contents,
3653 symtab_hdr, sym_hashes,
bedfd056
L		 3654 &r_type, GOT_UNKNOWN, rel,
3655 relend, h, r_symndx, TRUE))
142411ca 3656 return FALSE;
a3fadc9a 3657
142411ca
L		 3658 if (r_type != R_X86_64_TLSLD)
3659 {
bffbf940 3660 /* LD->LE transition:
e2cbcd91
L		 3661 leaq foo@tlsld(%rip), %rdi
3662 call __tls_get_addr@PLT
3663 For 64bit, we change it into:
3664 .word 0x6666; .byte 0x66; movq %fs:0, %rax
3665 For 32bit, we change it into:
3666 nopl 0x0(%rax); movl %fs:0, %eax
3667 Or
3668 leaq foo@tlsld(%rip), %rdi;
3669 call *__tls_get_addr@GOTPCREL(%rip)
3670 which may be converted to
3671 addr32 call __tls_get_addr
52bc799a 3672 For 64bit, we change it into:
e2cbcd91 3673 .word 0x6666; .word 0x6666; movq %fs:0, %rax
52bc799a 3674 For 32bit, we change it into:
e2cbcd91 3675 nopw 0x0(%rax); movl %fs:0, %eax
5c98a14e 3676 For largepic, change:
e2cbcd91
L		 3677 leaq foo@tlsgd(%rip), %rdi
3678 movabsq $__tls_get_addr@pltoff, %rax
3679 addq %rbx, %rax
3680 call *%rax
3681 into
3682 data16 data16 data16 nopw %cs:0x0(%rax,%rax,1)
3683 movq %fs:0, %eax */
142411ca
L		 3684
3685 BFD_ASSERT (r_type == R_X86_64_TPOFF32);
e2cbcd91
L		 3686 if (ABI_64_P (output_bfd))
3687 {
3688 if (contents[rel->r_offset + 5] == 0xb8)
3689 memcpy (contents + rel->r_offset - 3,
3690 "\x66\x66\x66\x66\x2e\x0f\x1f\x84\0\0\0\0\0"
3691 "\x64\x48\x8b\x04\x25\0\0\0", 22);
3692 else if (contents[rel->r_offset + 4] == 0xff
3693 || contents[rel->r_offset + 4] == 0x67)
3694 memcpy (contents + rel->r_offset - 3,
3695 "\x66\x66\x66\x66\x64\x48\x8b\x04\x25\0\0\0",
3696 13);
3697 else
3698 memcpy (contents + rel->r_offset - 3,
3699 "\x66\x66\x66\x64\x48\x8b\x04\x25\0\0\0", 12);
3700 }
52bc799a 3701 else
e2cbcd91
L		 3702 {
3703 if (contents[rel->r_offset + 4] == 0xff)
3704 memcpy (contents + rel->r_offset - 3,
3705 "\x66\x0f\x1f\x40\x00\x64\x8b\x04\x25\0\0\0",
3706 13);
3707 else
3708 memcpy (contents + rel->r_offset - 3,
3709 "\x0f\x1f\x40\x00\x64\x8b\x04\x25\0\0\0", 12);
3710 }
3711 /* Skip R_X86_64_PC32, R_X86_64_PLT32, R_X86_64_GOTPCRELX
3712 and R_X86_64_PLTOFF64. */
bffbf940 3713 rel++;
60f2e42e 3714 wrel++;
bffbf940
JJ		 3715 continue;
3716 }
3717
6de2ae4a 3718 if (htab->elf.sgot == NULL)
bffbf940
JJ		 3719 abort ();
3720
0afcef53 3721 off = htab->tls_ld_or_ldm_got.offset;
bffbf940
JJ		 3722 if (off & 1)
3723 off &= ~1;
3724 else
3725 {
3726 Elf_Internal_Rela outrel;
bffbf940 3727
6de2ae4a 3728 if (htab->elf.srelgot == NULL)
bffbf940
JJ		 3729 abort ();
3730
6de2ae4a
L		 3731 outrel.r_offset = (htab->elf.sgot->output_section->vma
3732 + htab->elf.sgot->output_offset + off);
bffbf940
JJ		 3733
3734 bfd_put_64 (output_bfd, 0,
6de2ae4a 3735 htab->elf.sgot->contents + off);
bffbf940 3736 bfd_put_64 (output_bfd, 0,
6de2ae4a 3737 htab->elf.sgot->contents + off + GOT_ENTRY_SIZE);
351f65ca 3738 outrel.r_info = htab->r_info (0, R_X86_64_DTPMOD64);
bffbf940 3739 outrel.r_addend = 0;
351f65ca 3740 elf_append_rela (output_bfd, htab->elf.srelgot,
464d3bd4 3741 &outrel);
0afcef53 3742 htab->tls_ld_or_ldm_got.offset |= 1;
bffbf940 3743 }
6de2ae4a
L		 3744 relocation = htab->elf.sgot->output_section->vma
3745 + htab->elf.sgot->output_offset + off;
b34976b6 3746 unresolved_reloc = FALSE;
bffbf940
JJ		 3747 break;
3748
3749 case R_X86_64_DTPOFF32:
0e1862bb
L		 3750 if (!bfd_link_executable (info)
3751 || (input_section->flags & SEC_CODE) == 0)
0afcef53 3752 relocation -= _bfd_x86_elf_dtpoff_base (info);
bffbf940 3753 else
351f65ca 3754 relocation = elf_x86_64_tpoff (info, relocation);
bffbf940
JJ		 3755 break;
3756
3757 case R_X86_64_TPOFF32:
6769d501 3758 case R_X86_64_TPOFF64:
0e1862bb 3759 BFD_ASSERT (bfd_link_executable (info));
351f65ca 3760 relocation = elf_x86_64_tpoff (info, relocation);
bffbf940
JJ		 3761 break;
3762
a69ed7f7
L		 3763 case R_X86_64_DTPOFF64:
3764 BFD_ASSERT ((input_section->flags & SEC_CODE) == 0);
0afcef53 3765 relocation -= _bfd_x86_elf_dtpoff_base (info);
a69ed7f7
L		 3766 break;
3767
70256ad8
AJ		 3768 default:
3769 break;
3770 }
8d88c4ca 3771
239e1f3a
AM		 3772 /* Dynamic relocs are not propagated for SEC_DEBUGGING sections
3773 because such sections are not SEC_ALLOC and thus ld.so will
3774 not process them. */
c434dee6 3775 if (unresolved_reloc
239e1f3a 3776 && !((input_section->flags & SEC_DEBUGGING) != 0
1d5316ab
AM		 3777 && h->def_dynamic)
3778 && _bfd_elf_section_offset (output_bfd, info, input_section,
3779 rel->r_offset) != (bfd_vma) -1)
a040981f 3780 {
7073b5b9
L		 3781 switch (r_type)
3782 {
3783 case R_X86_64_32S:
a5b4ee94
L		 3784 sec = h->root.u.def.section;
3785 if ((info->nocopyreloc
3786 || (eh->def_protected
3787 && elf_has_no_copy_on_protected (h->root.u.def.section->owner)))
7073b5b9
L		 3788 && !(h->root.u.def.section->flags & SEC_CODE))
3789 return elf_x86_64_need_pic (info, input_bfd, input_section,
3790 h, NULL, NULL, howto);
3791 /* Fall through. */
3792
3793 default:
3794 _bfd_error_handler
3795 /* xgettext:c-format */
2dcf00ce
AM		 3796 (_("%pB(%pA+%#" PRIx64 "): "
3797 "unresolvable %s relocation against symbol `%s'"),
7073b5b9
L		 3798 input_bfd,
3799 input_section,
2dcf00ce 3800 (uint64_t) rel->r_offset,
7073b5b9
L		 3801 howto->name,
3802 h->root.root.string);
3803 return FALSE;
3804 }
a040981f 3805 }
c434dee6 3806
cbe950e9 3807do_relocation:
8d88c4ca 3808 r = _bfd_final_link_relocate (howto, input_bfd, input_section,
c434dee6
AJ		 3809 contents, rel->r_offset,
3810 relocation, rel->r_addend);
8d88c4ca 3811
62d78908 3812check_relocation_error:
8d88c4ca 3813 if (r != bfd_reloc_ok)
8da6118f 3814 {
c434dee6
AJ		 3815 const char *name;
3816
3817 if (h != NULL)
3818 name = h->root.root.string;
3819 else
8da6118f 3820 {
c434dee6
AJ		 3821 name = bfd_elf_string_from_elf_section (input_bfd,
3822 symtab_hdr->sh_link,
3823 sym->st_name);
3824 if (name == NULL)
b34976b6 3825 return FALSE;
c434dee6
AJ		 3826 if (*name == '\0')
3827 name = bfd_section_name (input_bfd, sec);
3828 }
3829
3830 if (r == bfd_reloc_overflow)
8b43e456 3831 {
78984959 3832 if (converted_reloc)
8b43e456
L		 3833 {
3834 info->callbacks->einfo
3835 (_("%F%P: failed to convert GOTPCREL relocation; relink with --no-relax\n"));
3836 return FALSE;
3837 }
3838 (*info->callbacks->reloc_overflow)
3839 (info, (h ? &h->root : NULL), name, howto->name,
3840 (bfd_vma) 0, input_bfd, input_section, rel->r_offset);
3841 }
c434dee6
AJ		 3842 else
3843 {
4eca0228 3844 _bfd_error_handler
695344c0 3845 /* xgettext:c-format */
2dcf00ce 3846 (_("%pB(%pA+%#" PRIx64 "): reloc against `%s': error %d"),
d003868e 3847 input_bfd, input_section,
2dcf00ce 3848 (uint64_t) rel->r_offset, name, (int) r);
b34976b6 3849 return FALSE;
8da6118f
KH		 3850 }
3851 }
60f2e42e
L		 3852
3853 if (wrel != rel)
3854 *wrel = *rel;
3855 }
3856
3857 if (wrel != rel)
3858 {
3859 Elf_Internal_Shdr *rel_hdr;
3860 size_t deleted = rel - wrel;
3861
3862 rel_hdr = _bfd_elf_single_rel_hdr (input_section->output_section);
3863 rel_hdr->sh_size -= rel_hdr->sh_entsize * deleted;
3864 if (rel_hdr->sh_size == 0)
3865 {
3866 /* It is too late to remove an empty reloc section. Leave
3867 one NONE reloc.
3868 ??? What is wrong with an empty section??? */
3869 rel_hdr->sh_size = rel_hdr->sh_entsize;
3870 deleted -= 1;
3871 }
3872 rel_hdr = _bfd_elf_single_rel_hdr (input_section);
3873 rel_hdr->sh_size -= rel_hdr->sh_entsize * deleted;
3874 input_section->reloc_count -= deleted;
8d88c4ca 3875 }
70256ad8 3876
b34976b6 3877 return TRUE;
70256ad8
AJ		 3878}
3879
3880/* Finish up dynamic symbol handling. We set the contents of various
3881 dynamic sections here. */
3882
b34976b6 3883static bfd_boolean
351f65ca
L		 3884elf_x86_64_finish_dynamic_symbol (bfd *output_bfd,
3885 struct bfd_link_info *info,
3886 struct elf_link_hash_entry *h,
aec6b87e 3887 Elf_Internal_Sym *sym)
70256ad8 3888{
0afcef53 3889 struct elf_x86_link_hash_table *htab;
f2c29a16 3890 bfd_boolean use_plt_second;
0afcef53 3891 struct elf_x86_link_hash_entry *eh;
aec6b87e 3892 bfd_boolean local_undefweak;
70256ad8 3893
0afcef53 3894 htab = elf_x86_hash_table (info, X86_64_ELF_DATA);
4dfe6ac6
NC		 3895 if (htab == NULL)
3896 return FALSE;
70256ad8 3897
f2c29a16
L		 3898 /* Use the second PLT section only if there is .plt section. */
3899 use_plt_second = htab->elf.splt != NULL && htab->plt_second != NULL;
0ff2b86e 3900
0afcef53 3901 eh = (struct elf_x86_link_hash_entry *) h;
9e9821dd
L		 3902 if (eh->no_finish_dynamic_symbol)
3903 abort ();
dd7e64d4 3904
aec6b87e
L		 3905 /* We keep PLT/GOT entries without dynamic PLT/GOT relocations for
3906 resolved undefined weak symbols in executable so that their
3907 references have value 0 at run-time. */
c5bce5c6 3908 local_undefweak = UNDEFINED_WEAK_RESOLVED_TO_ZERO (info, eh);
aec6b87e 3909
70256ad8
AJ		 3910 if (h->plt.offset != (bfd_vma) -1)
3911 {
70256ad8 3912 bfd_vma plt_index;
38b12349 3913 bfd_vma got_offset, plt_offset;
70256ad8 3914 Elf_Internal_Rela rela;
947216bf 3915 bfd_byte *loc;
0ff2b86e 3916 asection *plt, *gotplt, *relplt, *resolved_plt;
351f65ca 3917 const struct elf_backend_data *bed;
5974eba6 3918 bfd_vma plt_got_pcrel_offset;
cbe950e9
L		 3919
3920 /* When building a static executable, use .iplt, .igot.plt and
3921 .rela.iplt sections for STT_GNU_IFUNC symbols. */
6de2ae4a 3922 if (htab->elf.splt != NULL)
cbe950e9 3923 {
6de2ae4a
L		 3924 plt = htab->elf.splt;
3925 gotplt = htab->elf.sgotplt;
3926 relplt = htab->elf.srelplt;
cbe950e9
L		 3927 }
3928 else
3929 {
6de2ae4a
L		 3930 plt = htab->elf.iplt;
3931 gotplt = htab->elf.igotplt;
3932 relplt = htab->elf.irelplt;
cbe950e9 3933 }
70256ad8 3934
f3180fa9 3935 VERIFY_PLT_ENTRY (info, h, plt, gotplt, relplt, local_undefweak)
70256ad8
AJ		 3936
3937 /* Get the index in the procedure linkage table which
3938 corresponds to this symbol. This is the index of this symbol
3939 in all the symbols for which we are making plt entries. The
cbe950e9 3940 first entry in the procedure linkage table is reserved.
6bbec505 3941
cbe950e9 3942 Get the offset into the .got table of the entry that
407443a3 3943 corresponds to this function. Each .got entry is GOT_ENTRY_SIZE
cbe950e9
L		 3944 bytes. The first three are reserved for the dynamic linker.
3945
3946 For static executables, we don't reserve anything. */
3947
6de2ae4a 3948 if (plt == htab->elf.splt)
cbe950e9 3949 {
765e526c
L		 3950 got_offset = (h->plt.offset / htab->plt.plt_entry_size
3951 - htab->plt.has_plt0);
e1f98742 3952 got_offset = (got_offset + 3) * GOT_ENTRY_SIZE;
cbe950e9
L		 3953 }
3954 else
3955 {
765e526c 3956 got_offset = h->plt.offset / htab->plt.plt_entry_size;
e1f98742 3957 got_offset = got_offset * GOT_ENTRY_SIZE;
cbe950e9 3958 }
70256ad8 3959
38b12349 3960 /* Fill in the entry in the procedure linkage table. */
765e526c
L		 3961 memcpy (plt->contents + h->plt.offset, htab->plt.plt_entry,
3962 htab->plt.plt_entry_size);
f2c29a16 3963 if (use_plt_second)
0ff2b86e 3964 {
f2c29a16 3965 memcpy (htab->plt_second->contents + eh->plt_second.offset,
765e526c
L		 3966 htab->non_lazy_plt->plt_entry,
3967 htab->non_lazy_plt->plt_entry_size);
0ff2b86e 3968
f2c29a16
L		 3969 resolved_plt = htab->plt_second;
3970 plt_offset = eh->plt_second.offset;
0ff2b86e
L		 3971 }
3972 else
3973 {
0ff2b86e
L		 3974 resolved_plt = plt;
3975 plt_offset = h->plt.offset;
3976 }
eed180f8
RM		 3977
3978 /* Insert the relocation positions of the plt section. */
3979
3980 /* Put offset the PC-relative instruction referring to the GOT entry,
3981 subtracting the size of that instruction. */
ab7fede8
L		 3982 plt_got_pcrel_offset = (gotplt->output_section->vma
3983 + gotplt->output_offset
3984 + got_offset
3985 - resolved_plt->output_section->vma
3986 - resolved_plt->output_offset
3987 - plt_offset
765e526c 3988 - htab->plt.plt_got_insn_size);
ab7fede8
L		 3989
3990 /* Check PC-relative offset overflow in PLT entry. */
5974eba6 3991 if ((plt_got_pcrel_offset + 0x80000000) > 0xffffffff)
695344c0 3992 /* xgettext:c-format */
871b3ab2 3993 info->callbacks->einfo (_("%F%pB: PC-relative offset overflow in PLT entry for `%s'\n"),
ab7fede8
L		 3994 output_bfd, h->root.root.string);
3995
3996 bfd_put_32 (output_bfd, plt_got_pcrel_offset,
38b12349 3997 (resolved_plt->contents + plt_offset
765e526c 3998 + htab->plt.plt_got_offset));
cbe950e9 3999
653165cc 4000 /* Fill in the entry in the global offset table, initially this
aec6b87e
L		 4001 points to the second part of the PLT entry. Leave the entry
4002 as zero for undefined weak symbol in PIE. No PLT relocation
4003 against undefined weak symbol in PIE. */
4004 if (!local_undefweak)
cbe950e9 4005 {
765e526c 4006 if (htab->plt.has_plt0)
38b12349
L		 4007 bfd_put_64 (output_bfd, (plt->output_section->vma
4008 + plt->output_offset
4009 + h->plt.offset
765e526c 4010 + htab->lazy_plt->plt_lazy_offset),
38b12349 4011 gotplt->contents + got_offset);
aec6b87e
L		 4012
4013 /* Fill in the entry in the .rela.plt section. */
4014 rela.r_offset = (gotplt->output_section->vma
4015 + gotplt->output_offset
4016 + got_offset);
cf1070f1 4017 if (PLT_LOCAL_IFUNC_P (info, h))
aec6b87e 4018 {
871b3ab2 4019 info->callbacks->minfo (_("Local IFUNC function `%s' in %pB\n"),
6322e5c5
L		 4020 h->root.root.string,
4021 h->root.u.def.section->owner);
4022
aec6b87e
L		 4023 /* If an STT_GNU_IFUNC symbol is locally defined, generate
4024 R_X86_64_IRELATIVE instead of R_X86_64_JUMP_SLOT. */
4025 rela.r_info = htab->r_info (0, R_X86_64_IRELATIVE);
4026 rela.r_addend = (h->root.u.def.value
4027 + h->root.u.def.section->output_section->vma
4028 + h->root.u.def.section->output_offset);
4029 /* R_X86_64_IRELATIVE comes last. */
4030 plt_index = htab->next_irelative_index--;
4031 }
4032 else
4033 {
4034 rela.r_info = htab->r_info (h->dynindx, R_X86_64_JUMP_SLOT);
4035 rela.r_addend = 0;
4036 plt_index = htab->next_jump_slot_index++;
4037 }
e1f98742 4038
38b12349
L		 4039 /* Don't fill the second and third slots in PLT entry for
4040 static executables nor without PLT0. */
765e526c 4041 if (plt == htab->elf.splt && htab->plt.has_plt0)
aec6b87e 4042 {
38b12349 4043 bfd_vma plt0_offset
765e526c 4044 = h->plt.offset + htab->lazy_plt->plt_plt_insn_end;
aec6b87e
L		 4045
4046 /* Put relocation index. */
4047 bfd_put_32 (output_bfd, plt_index,
4048 (plt->contents + h->plt.offset
765e526c 4049 + htab->lazy_plt->plt_reloc_offset));
aec6b87e
L		 4050
4051 /* Put offset for jmp .PLT0 and check for overflow. We don't
4052 check relocation index for overflow since branch displacement
4053 will overflow first. */
4054 if (plt0_offset > 0x80000000)
695344c0 4055 /* xgettext:c-format */
871b3ab2 4056 info->callbacks->einfo (_("%F%pB: branch displacement overflow in PLT entry for `%s'\n"),
aec6b87e
L		 4057 output_bfd, h->root.root.string);
4058 bfd_put_32 (output_bfd, - plt0_offset,
38b12349 4059 (plt->contents + h->plt.offset
765e526c 4060 + htab->lazy_plt->plt_plt_offset));
aec6b87e 4061 }
351f65ca 4062
aec6b87e
L		 4063 bed = get_elf_backend_data (output_bfd);
4064 loc = relplt->contents + plt_index * bed->s->sizeof_rela;
4065 bed->s->swap_reloca_out (output_bfd, &rela, loc);
4066 }
dd7e64d4
L		 4067 }
4068 else if (eh->plt_got.offset != (bfd_vma) -1)
4069 {
38b12349 4070 bfd_vma got_offset, plt_offset;
dd7e64d4
L		 4071 asection *plt, *got;
4072 bfd_boolean got_after_plt;
4073 int32_t got_pcrel_offset;
dd7e64d4
L		 4074
4075 /* Set the entry in the GOT procedure linkage table. */
4076 plt = htab->plt_got;
4077 got = htab->elf.sgot;
4078 got_offset = h->got.offset;
4079
4080 if (got_offset == (bfd_vma) -1
e492d2f8 4081 || (h->type == STT_GNU_IFUNC && h->def_regular)
dd7e64d4
L		 4082 || plt == NULL
4083 || got == NULL)
4084 abort ();
70256ad8 4085
38b12349 4086 /* Use the non-lazy PLT entry template for the GOT PLT since they
dd7e64d4 4087 are the identical. */
dd7e64d4
L		 4088 /* Fill in the entry in the GOT procedure linkage table. */
4089 plt_offset = eh->plt_got.offset;
4090 memcpy (plt->contents + plt_offset,
765e526c
L		 4091 htab->non_lazy_plt->plt_entry,
4092 htab->non_lazy_plt->plt_entry_size);
dd7e64d4
L		 4093
4094 /* Put offset the PC-relative instruction referring to the GOT
4095 entry, subtracting the size of that instruction. */
4096 got_pcrel_offset = (got->output_section->vma
4097 + got->output_offset
4098 + got_offset
4099 - plt->output_section->vma
4100 - plt->output_offset
4101 - plt_offset
765e526c 4102 - htab->non_lazy_plt->plt_got_insn_size);
dd7e64d4
L		 4103
4104 /* Check PC-relative offset overflow in GOT PLT entry. */
4105 got_after_plt = got->output_section->vma > plt->output_section->vma;
4106 if ((got_after_plt && got_pcrel_offset < 0)
4107 || (!got_after_plt && got_pcrel_offset > 0))
695344c0 4108 /* xgettext:c-format */
871b3ab2 4109 info->callbacks->einfo (_("%F%pB: PC-relative offset overflow in GOT PLT entry for `%s'\n"),
dd7e64d4
L		 4110 output_bfd, h->root.root.string);
4111
4112 bfd_put_32 (output_bfd, got_pcrel_offset,
38b12349 4113 (plt->contents + plt_offset
765e526c 4114 + htab->non_lazy_plt->plt_got_offset));
dd7e64d4
L		 4115 }
4116
aec6b87e
L		 4117 if (!local_undefweak
4118 && !h->def_regular
dd7e64d4
L		 4119 && (h->plt.offset != (bfd_vma) -1
4120 || eh->plt_got.offset != (bfd_vma) -1))
4121 {
4122 /* Mark the symbol as undefined, rather than as defined in
4123 the .plt section. Leave the value if there were any
4124 relocations where pointer equality matters (this is a clue
4125 for the dynamic linker, to make function pointer
4126 comparisons work between an application and shared
4127 library), otherwise set it to zero. If a function is only
4128 called from a binary, there is no need to slow down
4129 shared libraries because of that. */
4130 sym->st_shndx = SHN_UNDEF;
4131 if (!h->pointer_equality_needed)
4132 sym->st_value = 0;
70256ad8
AJ		 4133 }
4134
aec6b87e
L		 4135 /* Don't generate dynamic GOT relocation against undefined weak
4136 symbol in executable. */
bffbf940 4137 if (h->got.offset != (bfd_vma) -1
0afcef53
L		 4138 && ! GOT_TLS_GD_ANY_P (elf_x86_hash_entry (h)->tls_type)
4139 && elf_x86_hash_entry (h)->tls_type != GOT_TLS_IE
aec6b87e 4140 && !local_undefweak)
053579d7 4141 {
053579d7 4142 Elf_Internal_Rela rela;
233cc9c1 4143 asection *relgot = htab->elf.srelgot;
053579d7
AJ		 4144
4145 /* This symbol has an entry in the global offset table. Set it
bffbf940 4146 up. */
6de2ae4a 4147 if (htab->elf.sgot == NULL || htab->elf.srelgot == NULL)
c434dee6 4148 abort ();
053579d7 4149
6de2ae4a
L		 4150 rela.r_offset = (htab->elf.sgot->output_section->vma
4151 + htab->elf.sgot->output_offset
dc810e39 4152 + (h->got.offset &~ (bfd_vma) 1));
053579d7
AJ		 4153
4154 /* If this is a static link, or it is a -Bsymbolic link and the
4155 symbol is defined locally or was forced to be local because
4156 of a version file, we just want to emit a RELATIVE reloc.
4157 The entry in the global offset table will already have been
4158 initialized in the relocate_section function. */
710ab287 4159 if (h->def_regular
0018b0a3
L		 4160 && h->type == STT_GNU_IFUNC)
4161 {
233cc9c1
L		 4162 if (h->plt.offset == (bfd_vma) -1)
4163 {
4164 /* STT_GNU_IFUNC is referenced without PLT. */
4165 if (htab->elf.splt == NULL)
4166 {
4167 /* use .rel[a].iplt section to store .got relocations
4168 in static executable. */
4169 relgot = htab->elf.irelplt;
4170 }
6999821f 4171 if (SYMBOL_REFERENCES_LOCAL_P (info, h))
233cc9c1 4172 {
871b3ab2 4173 info->callbacks->minfo (_("Local IFUNC function `%s' in %pB\n"),
6322e5c5
L		 4174 h->root.root.string,
4175 h->root.u.def.section->owner);
4176
233cc9c1
L		 4177 rela.r_info = htab->r_info (0,
4178 R_X86_64_IRELATIVE);
4179 rela.r_addend = (h->root.u.def.value
4180 + h->root.u.def.section->output_section->vma
4181 + h->root.u.def.section->output_offset);
4182 }
4183 else
4184 goto do_glob_dat;
4185 }
4186 else if (bfd_link_pic (info))
710ab287
L		 4187 {
4188 /* Generate R_X86_64_GLOB_DAT. */
4189 goto do_glob_dat;
4190 }
4191 else
4192 {
90d60710 4193 asection *plt;
aab82f4c 4194 bfd_vma plt_offset;
90d60710 4195
710ab287
L		 4196 if (!h->pointer_equality_needed)
4197 abort ();
4198
4199 /* For non-shared object, we can't use .got.plt, which
4200 contains the real function addres if we need pointer
4201 equality. We load the GOT entry with the PLT entry. */
f2c29a16 4202 if (htab->plt_second != NULL)
aab82f4c 4203 {
f2c29a16
L		 4204 plt = htab->plt_second;
4205 plt_offset = eh->plt_second.offset;
aab82f4c
L		 4206 }
4207 else
4208 {
4209 plt = htab->elf.splt ? htab->elf.splt : htab->elf.iplt;
4210 plt_offset = h->plt.offset;
4211 }
710ab287
L		 4212 bfd_put_64 (output_bfd, (plt->output_section->vma
4213 + plt->output_offset
aab82f4c 4214 + plt_offset),
6de2ae4a 4215 htab->elf.sgot->contents + h->got.offset);
710ab287
L		 4216 return TRUE;
4217 }
0018b0a3 4218 }
0e1862bb 4219 else if (bfd_link_pic (info)
6999821f 4220 && SYMBOL_REFERENCES_LOCAL_P (info, h))
053579d7 4221 {
ad71ce8d 4222 if (!(h->def_regular || ELF_COMMON_DEF_P (h)))
41bed6dd 4223 return FALSE;
cc78d0af 4224 BFD_ASSERT((h->got.offset & 1) != 0);
351f65ca 4225 rela.r_info = htab->r_info (0, R_X86_64_RELATIVE);
053579d7
AJ		 4226 rela.r_addend = (h->root.u.def.value
4227 + h->root.u.def.section->output_section->vma
4228 + h->root.u.def.section->output_offset);
4229 }
4230 else
4231 {
4232 BFD_ASSERT((h->got.offset & 1) == 0);
710ab287 4233do_glob_dat:
c434dee6 4234 bfd_put_64 (output_bfd, (bfd_vma) 0,
6de2ae4a 4235 htab->elf.sgot->contents + h->got.offset);
351f65ca 4236 rela.r_info = htab->r_info (h->dynindx, R_X86_64_GLOB_DAT);
053579d7
AJ		 4237 rela.r_addend = 0;
4238 }
4239
233cc9c1 4240 elf_append_rela (output_bfd, relgot, &rela);
053579d7
AJ		 4241 }
4242
f5385ebf 4243 if (h->needs_copy)
70256ad8 4244 {
70256ad8 4245 Elf_Internal_Rela rela;
5474d94f 4246 asection *s;
70256ad8
AJ		 4247
4248 /* This symbol needs a copy reloc. Set it up. */
ff38b4cc 4249 VERIFY_COPY_RELOC (h, htab)
70256ad8
AJ		 4250
4251 rela.r_offset = (h->root.u.def.value
4252 + h->root.u.def.section->output_section->vma
4253 + h->root.u.def.section->output_offset);
351f65ca 4254 rela.r_info = htab->r_info (h->dynindx, R_X86_64_COPY);
70256ad8 4255 rela.r_addend = 0;
afbf7e8e 4256 if (h->root.u.def.section == htab->elf.sdynrelro)
5474d94f
AM		 4257 s = htab->elf.sreldynrelro;
4258 else
4259 s = htab->elf.srelbss;
4260 elf_append_rela (output_bfd, s, &rela);
70256ad8
AJ		 4261 }
4262
b34976b6 4263 return TRUE;
70256ad8
AJ		 4264}
4265
c25bc9fc
L		 4266/* Finish up local dynamic symbol handling. We set the contents of
4267 various dynamic sections here. */
4268
4269static bfd_boolean
351f65ca 4270elf_x86_64_finish_local_dynamic_symbol (void **slot, void *inf)
c25bc9fc
L		 4271{
4272 struct elf_link_hash_entry *h
4273 = (struct elf_link_hash_entry *) *slot;
4274 struct bfd_link_info *info
eed180f8 4275 = (struct bfd_link_info *) inf;
c25bc9fc 4276
351f65ca 4277 return elf_x86_64_finish_dynamic_symbol (info->output_bfd,
5f0f0847 4278 info, h, NULL);
c25bc9fc
L		 4279}
4280
aec6b87e
L		 4281/* Finish up undefined weak symbol handling in PIE. Fill its PLT entry
4282 here since undefined weak symbol may not be dynamic and may not be
4283 called for elf_x86_64_finish_dynamic_symbol. */
4284
4285static bfd_boolean
4286elf_x86_64_pie_finish_undefweak_symbol (struct bfd_hash_entry *bh,
4287 void *inf)
4288{
4289 struct elf_link_hash_entry *h = (struct elf_link_hash_entry *) bh;
4290 struct bfd_link_info *info = (struct bfd_link_info *) inf;
4291
4292 if (h->root.type != bfd_link_hash_undefweak
4293 || h->dynindx != -1)
4294 return TRUE;
4295
4296 return elf_x86_64_finish_dynamic_symbol (info->output_bfd,
5f0f0847 4297 info, h, NULL);
aec6b87e
L		 4298}
4299
c434dee6
AJ		 4300/* Used to decide how to sort relocs in an optimal manner for the
4301 dynamic linker, before writing them out. */
4302
4303static enum elf_reloc_type_class
cae1fbbb 4304elf_x86_64_reloc_type_class (const struct bfd_link_info *info,
7e612e98
AM		 4305 const asection *rel_sec ATTRIBUTE_UNUSED,
4306 const Elf_Internal_Rela *rela)
c434dee6 4307{
cae1fbbb
L		 4308 bfd *abfd = info->output_bfd;
4309 const struct elf_backend_data *bed = get_elf_backend_data (abfd);
0afcef53
L		 4310 struct elf_x86_link_hash_table *htab
4311 = elf_x86_hash_table (info, X86_64_ELF_DATA);
cae1fbbb 4312
d9e3b590
L		 4313 if (htab->elf.dynsym != NULL
4314 && htab->elf.dynsym->contents != NULL)
4315 {
4316 /* Check relocation against STT_GNU_IFUNC symbol if there are
07d6d2b8 4317 dynamic symbols. */
d9e3b590 4318 unsigned long r_symndx = htab->r_sym (rela->r_info);
897463b1
L		 4319 if (r_symndx != STN_UNDEF)
4320 {
4321 Elf_Internal_Sym sym;
4322 if (!bed->s->swap_symbol_in (abfd,
4323 (htab->elf.dynsym->contents
4324 + r_symndx * bed->s->sizeof_sym),
4325 0, &sym))
4326 abort ();
d9e3b590 4327
897463b1
L		 4328 if (ELF_ST_TYPE (sym.st_info) == STT_GNU_IFUNC)
4329 return reloc_class_ifunc;
4330 }
d9e3b590 4331 }
cae1fbbb 4332
351f65ca 4333 switch ((int) ELF32_R_TYPE (rela->r_info))
c434dee6 4334 {
c428ce9d
L		 4335 case R_X86_64_IRELATIVE:
4336 return reloc_class_ifunc;
c434dee6 4337 case R_X86_64_RELATIVE:
1da80baa 4338 case R_X86_64_RELATIVE64:
c434dee6
AJ		 4339 return reloc_class_relative;
4340 case R_X86_64_JUMP_SLOT:
4341 return reloc_class_plt;
4342 case R_X86_64_COPY:
4343 return reloc_class_copy;
4344 default:
4345 return reloc_class_normal;
4346 }
4347}
4348
70256ad8
AJ		 4349/* Finish up the dynamic sections. */
4350
b34976b6 4351static bfd_boolean
351f65ca
L		 4352elf_x86_64_finish_dynamic_sections (bfd *output_bfd,
4353 struct bfd_link_info *info)
70256ad8 4354{
0afcef53 4355 struct elf_x86_link_hash_table *htab;
70256ad8 4356
9577f60b 4357 htab = _bfd_x86_elf_finish_dynamic_sections (output_bfd, info);
4dfe6ac6
NC		 4358 if (htab == NULL)
4359 return FALSE;
4360
9577f60b
L		 4361 if (! htab->elf.dynamic_sections_created)
4362 return TRUE;
70256ad8 4363
9577f60b 4364 if (htab->elf.splt && htab->elf.splt->size > 0)
e41b3a13 4365 {
9577f60b
L		 4366 elf_section_data (htab->elf.splt->output_section)
4367 ->this_hdr.sh_entsize = htab->plt.plt_entry_size;
e41b3a13 4368
9577f60b 4369 if (htab->plt.has_plt0)
fff53dae 4370 {
9577f60b
L		 4371 /* Fill in the special first entry in the procedure linkage
4372 table. */
4373 memcpy (htab->elf.splt->contents,
4374 htab->lazy_plt->plt0_entry,
4375 htab->lazy_plt->plt0_entry_size);
4376 /* Add offset for pushq GOT+8(%rip), since the instruction
4377 uses 6 bytes subtract this value. */
4378 bfd_put_32 (output_bfd,
4379 (htab->elf.sgotplt->output_section->vma
4380 + htab->elf.sgotplt->output_offset
4381 + 8
4382 - htab->elf.splt->output_section->vma
4383 - htab->elf.splt->output_offset
4384 - 6),
4385 (htab->elf.splt->contents
4386 + htab->lazy_plt->plt0_got1_offset));
4387 /* Add offset for the PC-relative instruction accessing
4388 GOT+16, subtracting the offset to the end of that
4389 instruction. */
4390 bfd_put_32 (output_bfd,
4391 (htab->elf.sgotplt->output_section->vma
4392 + htab->elf.sgotplt->output_offset
4393 + 16
4394 - htab->elf.splt->output_section->vma
4395 - htab->elf.splt->output_offset
4396 - htab->lazy_plt->plt0_got2_insn_end),
4397 (htab->elf.splt->contents
4398 + htab->lazy_plt->plt0_got2_offset));
fff53dae 4399 }
fff53dae 4400
9577f60b 4401 if (htab->tlsdesc_plt)
8361ed4d 4402 {
9577f60b
L		 4403 bfd_put_64 (output_bfd, (bfd_vma) 0,
4404 htab->elf.sgot->contents + htab->tlsdesc_got);
4405
4406 memcpy (htab->elf.splt->contents + htab->tlsdesc_plt,
4407 htab->lazy_plt->plt0_entry,
4408 htab->lazy_plt->plt0_entry_size);
4409
4410 /* Add offset for pushq GOT+8(%rip), since the
4411 instruction uses 6 bytes subtract this value. */
4412 bfd_put_32 (output_bfd,
4413 (htab->elf.sgotplt->output_section->vma
4414 + htab->elf.sgotplt->output_offset
4415 + 8
4416 - htab->elf.splt->output_section->vma
4417 - htab->elf.splt->output_offset
4418 - htab->tlsdesc_plt
4419 - 6),
4420 (htab->elf.splt->contents
4421 + htab->tlsdesc_plt
4422 + htab->lazy_plt->plt0_got1_offset));
4423 /* Add offset for the PC-relative instruction accessing
4424 GOT+TDG, where TDG stands for htab->tlsdesc_got,
4425 subtracting the offset to the end of that
4426 instruction. */
4427 bfd_put_32 (output_bfd,
4428 (htab->elf.sgot->output_section->vma
4429 + htab->elf.sgot->output_offset
4430 + htab->tlsdesc_got
4431 - htab->elf.splt->output_section->vma
4432 - htab->elf.splt->output_offset
4433 - htab->tlsdesc_plt
4434 - htab->lazy_plt->plt0_got2_insn_end),
4435 (htab->elf.splt->contents
4436 + htab->tlsdesc_plt
4437 + htab->lazy_plt->plt0_got2_offset));
8361ed4d
L		 4438 }
4439 }
4440
aec6b87e
L		 4441 /* Fill PLT entries for undefined weak symbols in PIE. */
4442 if (bfd_link_pie (info))
4443 bfd_hash_traverse (&info->hash->table,
4444 elf_x86_64_pie_finish_undefweak_symbol,
4445 info);
4446
b34976b6 4447 return TRUE;
8d88c4ca
NC		 4448}
4449
233cc9c1
L		 4450/* Fill PLT/GOT entries and allocate dynamic relocations for local
4451 STT_GNU_IFUNC symbols, which aren't in the ELF linker hash table.
4452 It has to be done before elf_link_sort_relocs is called so that
4453 dynamic relocations are properly sorted. */
4454
4455static bfd_boolean
4456elf_x86_64_output_arch_local_syms
4457 (bfd *output_bfd ATTRIBUTE_UNUSED,
4458 struct bfd_link_info *info,
4459 void *flaginfo ATTRIBUTE_UNUSED,
4460 int (*func) (void *, const char *,
4461 Elf_Internal_Sym *,
4462 asection *,
4463 struct elf_link_hash_entry *) ATTRIBUTE_UNUSED)
4464{
0afcef53
L		 4465 struct elf_x86_link_hash_table *htab
4466 = elf_x86_hash_table (info, X86_64_ELF_DATA);
233cc9c1
L		 4467 if (htab == NULL)
4468 return FALSE;
4469
4470 /* Fill PLT and GOT entries for local STT_GNU_IFUNC symbols. */
4471 htab_traverse (htab->loc_hash_table,
4472 elf_x86_64_finish_local_dynamic_symbol,
4473 info);
4474
4475 return TRUE;
4476}
4477
38b12349 4478/* Forward declaration. */
765e526c 4479static const struct elf_x86_lazy_plt_layout elf_x86_64_nacl_plt;
38b12349
L		 4480
4481/* Similar to _bfd_elf_get_synthetic_symtab. Support PLTs with all
4482 dynamic relocations. */
4483
4484static long
4485elf_x86_64_get_synthetic_symtab (bfd *abfd,
4486 long symcount ATTRIBUTE_UNUSED,
4487 asymbol **syms ATTRIBUTE_UNUSED,
4488 long dynsymcount,
4489 asymbol **dynsyms,
4490 asymbol **ret)
4491{
f493882d 4492 long count, i, n;
38b12349 4493 int j;
38b12349 4494 bfd_byte *plt_contents;
f493882d 4495 long relsize;
765e526c
L		 4496 const struct elf_x86_lazy_plt_layout *lazy_plt;
4497 const struct elf_x86_non_lazy_plt_layout *non_lazy_plt;
4498 const struct elf_x86_lazy_plt_layout *lazy_bnd_plt;
4499 const struct elf_x86_non_lazy_plt_layout *non_lazy_bnd_plt;
4500 const struct elf_x86_lazy_plt_layout *lazy_ibt_plt;
4501 const struct elf_x86_non_lazy_plt_layout *non_lazy_ibt_plt;
38b12349 4502 asection *plt;
f493882d
L		 4503 enum elf_x86_plt_type plt_type;
4504 struct elf_x86_plt plts[] =
144bed8d 4505 {
38b12349
L		 4506 { ".plt", NULL, NULL, plt_unknown, 0, 0, 0, 0 },
4507 { ".plt.got", NULL, NULL, plt_non_lazy, 0, 0, 0, 0 },
f2c29a16
L		 4508 { ".plt.sec", NULL, NULL, plt_second, 0, 0, 0, 0 },
4509 { ".plt.bnd", NULL, NULL, plt_second, 0, 0, 0, 0 },
dd9e66ee 4510 { NULL, NULL, NULL, plt_non_lazy, 0, 0, 0, 0 }
38b12349 4511 };
144bed8d 4512
38b12349 4513 *ret = NULL;
144bed8d 4514
38b12349
L		 4515 if ((abfd->flags & (DYNAMIC | EXEC_P)) == 0)
4516 return 0;
144bed8d 4517
38b12349
L		 4518 if (dynsymcount <= 0)
4519 return 0;
cca5b8b6 4520
38b12349
L		 4521 relsize = bfd_get_dynamic_reloc_upper_bound (abfd);
4522 if (relsize <= 0)
4523 return -1;
4524
3b4c3844 4525 if (get_elf_x86_backend_data (abfd)->target_os != is_nacl)
144bed8d 4526 {
38b12349
L		 4527 lazy_plt = &elf_x86_64_lazy_plt;
4528 non_lazy_plt = &elf_x86_64_non_lazy_plt;
4529 lazy_bnd_plt = &elf_x86_64_lazy_bnd_plt;
4530 non_lazy_bnd_plt = &elf_x86_64_non_lazy_bnd_plt;
ee2fdd6f
L		 4531 if (ABI_64_P (abfd))
4532 {
4533 lazy_ibt_plt = &elf_x86_64_lazy_ibt_plt;
4534 non_lazy_ibt_plt = &elf_x86_64_non_lazy_ibt_plt;
4535 }
4536 else
4537 {
4538 lazy_ibt_plt = &elf_x32_lazy_ibt_plt;
4539 non_lazy_ibt_plt = &elf_x32_non_lazy_ibt_plt;
4540 }
38b12349
L		 4541 }
4542 else
4543 {
4544 lazy_plt = &elf_x86_64_nacl_plt;
4545 non_lazy_plt = NULL;
4546 lazy_bnd_plt = NULL;
4547 non_lazy_bnd_plt = NULL;
ee2fdd6f
L		 4548 lazy_ibt_plt = NULL;
4549 non_lazy_ibt_plt = NULL;
38b12349 4550 }
144bed8d 4551
38b12349
L		 4552 count = 0;
4553 for (j = 0; plts[j].name != NULL; j++)
4554 {
4555 plt = bfd_get_section_by_name (abfd, plts[j].name);
90efb642 4556 if (plt == NULL || plt->size == 0)
6f25f223 4557 continue;
533d0af0 4558
38b12349
L		 4559 /* Get the PLT section contents. */
4560 plt_contents = (bfd_byte *) bfd_malloc (plt->size);
4561 if (plt_contents == NULL)
4562 break;
4563 if (!bfd_get_section_contents (abfd, (asection *) plt,
4564 plt_contents, 0, plt->size))
4565 {
4566 free (plt_contents);
4567 break;
4568 }
144bed8d 4569
38b12349
L		 4570 /* Check what kind of PLT it is. */
4571 plt_type = plt_unknown;
90efb642
L		 4572 if (plts[j].type == plt_unknown
4573 && (plt->size >= (lazy_plt->plt_entry_size
4574 + lazy_plt->plt_entry_size)))
144bed8d 4575 {
38b12349
L		 4576 /* Match lazy PLT first. Need to check the first two
4577 instructions. */
4578 if ((memcmp (plt_contents, lazy_plt->plt0_entry,
4579 lazy_plt->plt0_got1_offset) == 0)
4580 && (memcmp (plt_contents + 6, lazy_plt->plt0_entry + 6,
4581 2) == 0))
4582 plt_type = plt_lazy;
4583 else if (lazy_bnd_plt != NULL
4584 && (memcmp (plt_contents, lazy_bnd_plt->plt0_entry,
4585 lazy_bnd_plt->plt0_got1_offset) == 0)
4586 && (memcmp (plt_contents + 6,
4587 lazy_bnd_plt->plt0_entry + 6, 3) == 0))
ec1f73bb 4588 {
f2c29a16 4589 plt_type = plt_lazy | plt_second;
ee2fdd6f
L		 4590 /* The fist entry in the lazy IBT PLT is the same as the
4591 lazy BND PLT. */
4592 if ((memcmp (plt_contents + lazy_ibt_plt->plt_entry_size,
4593 lazy_ibt_plt->plt_entry,
4594 lazy_ibt_plt->plt_got_offset) == 0))
4595 lazy_plt = lazy_ibt_plt;
4596 else
4597 lazy_plt = lazy_bnd_plt;
ec1f73bb 4598 }
144bed8d 4599 }
fca6ae69 4600
38b12349 4601 if (non_lazy_plt != NULL
90efb642
L		 4602 && (plt_type == plt_unknown || plt_type == plt_non_lazy)
4603 && plt->size >= non_lazy_plt->plt_entry_size)
38b12349
L		 4604 {
4605 /* Match non-lazy PLT. */
4606 if (memcmp (plt_contents, non_lazy_plt->plt_entry,
4607 non_lazy_plt->plt_got_offset) == 0)
4608 plt_type = plt_non_lazy;
4609 }
4610
ee2fdd6f 4611 if (plt_type == plt_unknown || plt_type == plt_second)
38b12349 4612 {
ee2fdd6f 4613 if (non_lazy_bnd_plt != NULL
90efb642 4614 && plt->size >= non_lazy_bnd_plt->plt_entry_size
ee2fdd6f
L		 4615 && (memcmp (plt_contents, non_lazy_bnd_plt->plt_entry,
4616 non_lazy_bnd_plt->plt_got_offset) == 0))
38b12349 4617 {
ee2fdd6f 4618 /* Match BND PLT. */
f2c29a16 4619 plt_type = plt_second;
38b12349
L		 4620 non_lazy_plt = non_lazy_bnd_plt;
4621 }
ee2fdd6f 4622 else if (non_lazy_ibt_plt != NULL
90efb642 4623 && plt->size >= non_lazy_ibt_plt->plt_entry_size
ee2fdd6f
L		 4624 && (memcmp (plt_contents,
4625 non_lazy_ibt_plt->plt_entry,
4626 non_lazy_ibt_plt->plt_got_offset) == 0))
4627 {
4628 /* Match IBT PLT. */
4629 plt_type = plt_second;
4630 non_lazy_plt = non_lazy_ibt_plt;
4631 }
38b12349
L		 4632 }
4633
4634 if (plt_type == plt_unknown)
37c0b6ee
L		 4635 {
4636 free (plt_contents);
4637 continue;
4638 }
38b12349
L		 4639
4640 plts[j].sec = plt;
4641 plts[j].type = plt_type;
4642
4643 if ((plt_type & plt_lazy))
4644 {
4645 plts[j].plt_got_offset = lazy_plt->plt_got_offset;
4646 plts[j].plt_got_insn_size = lazy_plt->plt_got_insn_size;
4647 plts[j].plt_entry_size = lazy_plt->plt_entry_size;
4648 /* Skip PLT0 in lazy PLT. */
4649 i = 1;
4650 }
4651 else
4652 {
4653 plts[j].plt_got_offset = non_lazy_plt->plt_got_offset;
4654 plts[j].plt_got_insn_size = non_lazy_plt->plt_got_insn_size;
4655 plts[j].plt_entry_size = non_lazy_plt->plt_entry_size;
4656 i = 0;
4657 }
4658
f2c29a16
L		 4659 /* Skip lazy PLT when the second PLT is used. */
4660 if (plt_type == (plt_lazy | plt_second))
38b12349
L		 4661 plts[j].count = 0;
4662 else
4663 {
4664 n = plt->size / plts[j].plt_entry_size;
4665 plts[j].count = n;
4666 count += n - i;
4667 }
4668
4669 plts[j].contents = plt_contents;
144bed8d
L		 4670 }
4671
f493882d
L		 4672 return _bfd_x86_elf_get_synthetic_symtab (abfd, count, relsize,
4673 (bfd_vma) 0, plts, dynsyms,
4674 ret);
0ff2b86e
L		 4675}
4676
d2b2c203
DJ		 4677/* Handle an x86-64 specific section when reading an object file. This
4678 is called when elfcode.h finds a section with an unknown type. */
4679
4680static bfd_boolean
0c723101
L		 4681elf_x86_64_section_from_shdr (bfd *abfd, Elf_Internal_Shdr *hdr,
4682 const char *name, int shindex)
d2b2c203
DJ		 4683{
4684 if (hdr->sh_type != SHT_X86_64_UNWIND)
4685 return FALSE;
4686
6dc132d9 4687 if (! _bfd_elf_make_section_from_shdr (abfd, hdr, name, shindex))
d2b2c203
DJ		 4688 return FALSE;
4689
4690 return TRUE;
4691}
4692
3b22753a
L		 4693/* Hook called by the linker routine which adds symbols from an object
4694 file. We use it to put SHN_X86_64_LCOMMON items in .lbss, instead
4695 of .bss. */
4696
4697static bfd_boolean
351f65ca 4698elf_x86_64_add_symbol_hook (bfd *abfd,
a43942db 4699 struct bfd_link_info *info ATTRIBUTE_UNUSED,
351f65ca
L		 4700 Elf_Internal_Sym *sym,
4701 const char **namep ATTRIBUTE_UNUSED,
4702 flagword *flagsp ATTRIBUTE_UNUSED,
4703 asection **secp,
4704 bfd_vma *valp)
3b22753a
L		 4705{
4706 asection *lcomm;
4707
4708 switch (sym->st_shndx)
4709 {
4710 case SHN_X86_64_LCOMMON:
4711 lcomm = bfd_get_section_by_name (abfd, "LARGE_COMMON");
4712 if (lcomm == NULL)
4713 {
4714 lcomm = bfd_make_section_with_flags (abfd,
4715 "LARGE_COMMON",
4716 (SEC_ALLOC
4717 | SEC_IS_COMMON
4718 | SEC_LINKER_CREATED));
4719 if (lcomm == NULL)
4720 return FALSE;
4721 elf_section_flags (lcomm) |= SHF_X86_64_LARGE;
4722 }
4723 *secp = lcomm;
4724 *valp = sym->st_size;
c35bdf6e 4725 return TRUE;
3b22753a 4726 }
d8045f23 4727
3b22753a
L		 4728 return TRUE;
4729}
4730
4731
4732/* Given a BFD section, try to locate the corresponding ELF section
4733 index. */
4734
4735static bfd_boolean
351f65ca
L		 4736elf_x86_64_elf_section_from_bfd_section (bfd *abfd ATTRIBUTE_UNUSED,
4737 asection *sec, int *index_return)
3b22753a
L		 4738{
4739 if (sec == &_bfd_elf_large_com_section)
4740 {
91d6fa6a 4741 *index_return = SHN_X86_64_LCOMMON;
3b22753a
L		 4742 return TRUE;
4743 }
4744 return FALSE;
4745}
4746
4747/* Process a symbol. */
4748
4749static void
351f65ca
L		 4750elf_x86_64_symbol_processing (bfd *abfd ATTRIBUTE_UNUSED,
4751 asymbol *asym)
3b22753a
L		 4752{
4753 elf_symbol_type *elfsym = (elf_symbol_type *) asym;
4754
4755 switch (elfsym->internal_elf_sym.st_shndx)
4756 {
4757 case SHN_X86_64_LCOMMON:
4758 asym->section = &_bfd_elf_large_com_section;
4759 asym->value = elfsym->internal_elf_sym.st_size;
4760 /* Common symbol doesn't set BSF_GLOBAL. */
4761 asym->flags &= ~BSF_GLOBAL;
4762 break;
4763 }
4764}
4765
4766static bfd_boolean
351f65ca 4767elf_x86_64_common_definition (Elf_Internal_Sym *sym)
3b22753a
L		 4768{
4769 return (sym->st_shndx == SHN_COMMON
4770 || sym->st_shndx == SHN_X86_64_LCOMMON);
4771}
4772
4773static unsigned int
351f65ca 4774elf_x86_64_common_section_index (asection *sec)
3b22753a
L		 4775{
4776 if ((elf_section_flags (sec) & SHF_X86_64_LARGE) == 0)
4777 return SHN_COMMON;
4778 else
4779 return SHN_X86_64_LCOMMON;
4780}
4781
4782static asection *
351f65ca 4783elf_x86_64_common_section (asection *sec)
3b22753a
L		 4784{
4785 if ((elf_section_flags (sec) & SHF_X86_64_LARGE) == 0)
4786 return bfd_com_section_ptr;
4787 else
4788 return &_bfd_elf_large_com_section;
4789}
4790
4791static bfd_boolean
5d13b3b3
AM		 4792elf_x86_64_merge_symbol (struct elf_link_hash_entry *h,
4793 const Elf_Internal_Sym *sym,
351f65ca 4794 asection **psec,
5d13b3b3
AM		 4795 bfd_boolean newdef,
4796 bfd_boolean olddef,
351f65ca 4797 bfd *oldbfd,
5d13b3b3 4798 const asection *oldsec)
3b22753a
L		 4799{
4800 /* A normal common symbol and a large common symbol result in a
00492999
L		 4801 normal common symbol. We turn the large common symbol into a
4802 normal one. */
5d13b3b3 4803 if (!olddef
3b22753a 4804 && h->root.type == bfd_link_hash_common
5d13b3b3
AM		 4805 && !newdef
4806 && bfd_is_com_section (*psec)
4807 && oldsec != *psec)
3b22753a 4808 {
00492999 4809 if (sym->st_shndx == SHN_COMMON
5d13b3b3 4810 && (elf_section_flags (oldsec) & SHF_X86_64_LARGE) != 0)
00492999
L		 4811 {
4812 h->root.u.c.p->section
4813 = bfd_make_section_old_way (oldbfd, "COMMON");
4814 h->root.u.c.p->section->flags = SEC_ALLOC;
4815 }
4816 else if (sym->st_shndx == SHN_X86_64_LCOMMON
5d13b3b3
AM		 4817 && (elf_section_flags (oldsec) & SHF_X86_64_LARGE) == 0)
4818 *psec = bfd_com_section_ptr;
3b22753a
L		 4819 }
4820
4821 return TRUE;
4822}
4823
4824static int
351f65ca
L		 4825elf_x86_64_additional_program_headers (bfd *abfd,
4826 struct bfd_link_info *info ATTRIBUTE_UNUSED)
3b22753a
L		 4827{
4828 asection *s;
9a2e389a 4829 int count = 0;
3b22753a
L		 4830
4831 /* Check to see if we need a large readonly segment. */
4832 s = bfd_get_section_by_name (abfd, ".lrodata");
4833 if (s && (s->flags & SEC_LOAD))
4834 count++;
4835
4836 /* Check to see if we need a large data segment. Since .lbss sections
4837 is placed right after the .bss section, there should be no need for
4838 a large data segment just because of .lbss. */
4839 s = bfd_get_section_by_name (abfd, ".ldata");
4840 if (s && (s->flags & SEC_LOAD))
4841 count++;
4842
4843 return count;
4844}
4845
c543bf9a
L		 4846/* Return TRUE iff relocations for INPUT are compatible with OUTPUT. */
4847
4848static bfd_boolean
4849elf_x86_64_relocs_compatible (const bfd_target *input,
4850 const bfd_target *output)
4851{
4852 return ((xvec_get_elf_backend_data (input)->s->elfclass
4853 == xvec_get_elf_backend_data (output)->s->elfclass)
4854 && _bfd_elf_relocs_compatible (input, output));
4855}
4856
38b12349
L		 4857/* Set up x86-64 GNU properties. Return the first relocatable ELF input
4858 with GNU properties if found. Otherwise, return NULL. */
4859
4860static bfd *
4861elf_x86_64_link_setup_gnu_properties (struct bfd_link_info *info)
4862{
1de031c8 4863 struct elf_x86_init_table init_table;
ee2fdd6f 4864
78984959
L		 4865 if ((int) R_X86_64_standard >= (int) R_X86_64_converted_reloc_bit
4866 || (int) R_X86_64_max <= (int) R_X86_64_converted_reloc_bit
4867 || ((int) (R_X86_64_GNU_VTINHERIT | R_X86_64_converted_reloc_bit)
4868 != (int) R_X86_64_GNU_VTINHERIT)
4869 || ((int) (R_X86_64_GNU_VTENTRY | R_X86_64_converted_reloc_bit)
4870 != (int) R_X86_64_GNU_VTENTRY))
4871 abort ();
4872
851b6fa1
L		 4873 /* This is unused for x86-64. */
4874 init_table.plt0_pad_byte = 0x90;
4875
3b4c3844 4876 if (get_elf_x86_backend_data (info->output_bfd)->target_os != is_nacl)
73784fa5 4877 {
a6798bab 4878 if (info->bndplt)
ee2fdd6f 4879 {
1de031c8
L		 4880 init_table.lazy_plt = &elf_x86_64_lazy_bnd_plt;
4881 init_table.non_lazy_plt = &elf_x86_64_non_lazy_bnd_plt;
ee2fdd6f
L		 4882 }
4883 else
4884 {
1de031c8
L		 4885 init_table.lazy_plt = &elf_x86_64_lazy_plt;
4886 init_table.non_lazy_plt = &elf_x86_64_non_lazy_plt;
ee2fdd6f 4887 }
38b12349 4888
a6798bab 4889 if (ABI_64_P (info->output_bfd))
38b12349 4890 {
1de031c8
L		 4891 init_table.lazy_ibt_plt = &elf_x86_64_lazy_ibt_plt;
4892 init_table.non_lazy_ibt_plt = &elf_x86_64_non_lazy_ibt_plt;
38b12349
L		 4893 }
4894 else
4895 {
1de031c8
L		 4896 init_table.lazy_ibt_plt = &elf_x32_lazy_ibt_plt;
4897 init_table.non_lazy_ibt_plt = &elf_x32_non_lazy_ibt_plt;
38b12349 4898 }
38b12349
L		 4899 }
4900 else
4901 {
1de031c8
L		 4902 init_table.lazy_plt = &elf_x86_64_nacl_plt;
4903 init_table.non_lazy_plt = NULL;
4904 init_table.lazy_ibt_plt = NULL;
4905 init_table.non_lazy_ibt_plt = NULL;
38b12349
L		 4906 }
4907
7a382c1c
L		 4908 if (ABI_64_P (info->output_bfd))
4909 {
1de031c8
L		 4910 init_table.r_info = elf64_r_info;
4911 init_table.r_sym = elf64_r_sym;
7a382c1c
L		 4912 }
4913 else
4914 {
1de031c8
L		 4915 init_table.r_info = elf32_r_info;
4916 init_table.r_sym = elf32_r_sym;
7a382c1c
L		 4917 }
4918
1de031c8 4919 return _bfd_x86_elf_link_setup_gnu_properties (info, &init_table);
38b12349
L		 4920}
4921
9a2e389a 4922static const struct bfd_elf_special_section
46bed679 4923elf_x86_64_special_sections[]=
3b22753a 4924{
0112cd26
NC		 4925 { STRING_COMMA_LEN (".gnu.linkonce.lb"), -2, SHT_NOBITS, SHF_ALLOC + SHF_WRITE + SHF_X86_64_LARGE},
4926 { STRING_COMMA_LEN (".gnu.linkonce.lr"), -2, SHT_PROGBITS, SHF_ALLOC + SHF_X86_64_LARGE},
4927 { STRING_COMMA_LEN (".gnu.linkonce.lt"), -2, SHT_PROGBITS, SHF_ALLOC + SHF_EXECINSTR + SHF_X86_64_LARGE},
07d6d2b8 4928 { STRING_COMMA_LEN (".lbss"), -2, SHT_NOBITS, SHF_ALLOC + SHF_WRITE + SHF_X86_64_LARGE},
0112cd26
NC		 4929 { STRING_COMMA_LEN (".ldata"), -2, SHT_PROGBITS, SHF_ALLOC + SHF_WRITE + SHF_X86_64_LARGE},
4930 { STRING_COMMA_LEN (".lrodata"), -2, SHT_PROGBITS, SHF_ALLOC + SHF_X86_64_LARGE},
07d6d2b8 4931 { NULL, 0, 0, 0, 0 }
3b22753a
L		 4932};
4933
6d00b590 4934#define TARGET_LITTLE_SYM x86_64_elf64_vec
70256ad8
AJ		 4935#define TARGET_LITTLE_NAME "elf64-x86-64"
4936#define ELF_ARCH bfd_arch_i386
ae95ffa6 4937#define ELF_TARGET_ID X86_64_ELF_DATA
70256ad8 4938#define ELF_MACHINE_CODE EM_X86_64
f7661549 4939#define ELF_MAXPAGESIZE 0x200000
2043964e 4940#define ELF_MINPAGESIZE 0x1000
24718e3b 4941#define ELF_COMMONPAGESIZE 0x1000
70256ad8
AJ		 4942
4943#define elf_backend_can_gc_sections 1
51b64d56 4944#define elf_backend_can_refcount 1
70256ad8
AJ		 4945#define elf_backend_want_got_plt 1
4946#define elf_backend_plt_readonly 1
4947#define elf_backend_want_plt_sym 0
4948#define elf_backend_got_header_size (GOT_ENTRY_SIZE*3)
b491616a 4949#define elf_backend_rela_normal 1
07d6d2b8 4950#define elf_backend_plt_alignment 4
f7483970 4951#define elf_backend_extern_protected_data 1
bedfd056 4952#define elf_backend_caches_rawsize 1
64f52338 4953#define elf_backend_dtrel_excludes_plt 1
5474d94f 4954#define elf_backend_want_dynrelro 1
70256ad8 4955
351f65ca 4956#define elf_info_to_howto elf_x86_64_info_to_howto
70256ad8 4957
351f65ca 4958#define bfd_elf64_bfd_reloc_type_lookup elf_x86_64_reloc_type_lookup
157090f7 4959#define bfd_elf64_bfd_reloc_name_lookup \
351f65ca 4960 elf_x86_64_reloc_name_lookup
70256ad8 4961
c543bf9a 4962#define elf_backend_relocs_compatible elf_x86_64_relocs_compatible
351f65ca 4963#define elf_backend_check_relocs elf_x86_64_check_relocs
38b12349 4964#define elf_backend_create_dynamic_sections _bfd_elf_create_dynamic_sections
351f65ca
L		 4965#define elf_backend_finish_dynamic_sections elf_x86_64_finish_dynamic_sections
4966#define elf_backend_finish_dynamic_symbol elf_x86_64_finish_dynamic_symbol
233cc9c1 4967#define elf_backend_output_arch_local_syms elf_x86_64_output_arch_local_syms
351f65ca
L		 4968#define elf_backend_grok_prstatus elf_x86_64_grok_prstatus
4969#define elf_backend_grok_psinfo elf_x86_64_grok_psinfo
8fd79e71
L		 4970#ifdef CORE_HEADER
4971#define elf_backend_write_core_note elf_x86_64_write_core_note
4972#endif
351f65ca
L		 4973#define elf_backend_reloc_type_class elf_x86_64_reloc_type_class
4974#define elf_backend_relocate_section elf_x86_64_relocate_section
74541ad4 4975#define elf_backend_init_index_section _bfd_elf_init_1_index_section
407443a3 4976#define elf_backend_object_p elf64_x86_64_elf_object_p
0ff2b86e 4977#define bfd_elf64_get_synthetic_symtab elf_x86_64_get_synthetic_symtab
8d88c4ca 4978
d2b2c203 4979#define elf_backend_section_from_shdr \
351f65ca 4980 elf_x86_64_section_from_shdr
d2b2c203 4981
3b22753a 4982#define elf_backend_section_from_bfd_section \
351f65ca 4983 elf_x86_64_elf_section_from_bfd_section
3b22753a 4984#define elf_backend_add_symbol_hook \
351f65ca 4985 elf_x86_64_add_symbol_hook
3b22753a 4986#define elf_backend_symbol_processing \
351f65ca 4987 elf_x86_64_symbol_processing
3b22753a 4988#define elf_backend_common_section_index \
351f65ca 4989 elf_x86_64_common_section_index
3b22753a 4990#define elf_backend_common_section \
351f65ca 4991 elf_x86_64_common_section
3b22753a 4992#define elf_backend_common_definition \
351f65ca 4993 elf_x86_64_common_definition
3b22753a 4994#define elf_backend_merge_symbol \
351f65ca 4995 elf_x86_64_merge_symbol
3b22753a 4996#define elf_backend_special_sections \
351f65ca 4997 elf_x86_64_special_sections
3b22753a 4998#define elf_backend_additional_program_headers \
351f65ca 4999 elf_x86_64_additional_program_headers
38b12349 5000#define elf_backend_setup_gnu_properties \
9f857535
L		 5001 elf_x86_64_link_setup_gnu_properties
5002#define elf_backend_hide_symbol \
5003 _bfd_x86_elf_hide_symbol
3b22753a 5004
8d88c4ca 5005#include "elf64-target.h"
9d7cbccd 5006
6036f486
ES		 5007/* CloudABI support. */
5008
07d6d2b8 5009#undef TARGET_LITTLE_SYM
6036f486 5010#define TARGET_LITTLE_SYM x86_64_elf64_cloudabi_vec
07d6d2b8 5011#undef TARGET_LITTLE_NAME
6036f486
ES		 5012#define TARGET_LITTLE_NAME "elf64-x86-64-cloudabi"
5013
5014#undef ELF_OSABI
5015#define ELF_OSABI ELFOSABI_CLOUDABI
5016
07d6d2b8 5017#undef elf64_bed
6036f486
ES		 5018#define elf64_bed elf64_x86_64_cloudabi_bed
5019
5020#include "elf64-target.h"
5021
9d7cbccd
NC		 5022/* FreeBSD support. */
5023
07d6d2b8 5024#undef TARGET_LITTLE_SYM
6d00b590 5025#define TARGET_LITTLE_SYM x86_64_elf64_fbsd_vec
07d6d2b8 5026#undef TARGET_LITTLE_NAME
9d7cbccd
NC		 5027#define TARGET_LITTLE_NAME "elf64-x86-64-freebsd"
5028
d1036acb
L		 5029#undef ELF_OSABI
5030#define ELF_OSABI ELFOSABI_FREEBSD
9d7cbccd 5031
07d6d2b8 5032#undef elf64_bed
9d7cbccd
NC		 5033#define elf64_bed elf64_x86_64_fbsd_bed
5034
5035#include "elf64-target.h"
8a9036a4 5036
a6cc6b3b
RO		 5037/* Solaris 2 support. */
5038
5039#undef TARGET_LITTLE_SYM
6d00b590 5040#define TARGET_LITTLE_SYM x86_64_elf64_sol2_vec
a6cc6b3b
RO		 5041#undef TARGET_LITTLE_NAME
5042#define TARGET_LITTLE_NAME "elf64-x86-64-sol2"
5043
3b4c3844
L		 5044static const struct elf_x86_backend_data elf_x86_64_solaris_arch_bed =
5045 {
5046 is_solaris /* os */
5047 };
5048
5049#undef elf_backend_arch_data
5050#define elf_backend_arch_data &elf_x86_64_solaris_arch_bed
5051
a6cc6b3b
RO		 5052/* Restore default: we cannot use ELFOSABI_SOLARIS, otherwise ELFOSABI_NONE
5053 objects won't be recognized. */
5054#undef ELF_OSABI
5055
5056#undef elf64_bed
5057#define elf64_bed elf64_x86_64_sol2_bed
5058
7dc98aea
RO		 5059/* The 64-bit static TLS arena size is rounded to the nearest 16-byte
5060 boundary. */
84865015 5061#undef elf_backend_static_tls_alignment
7dc98aea
RO		 5062#define elf_backend_static_tls_alignment 16
5063
a6cc6b3b
RO		 5064/* The Solaris 2 ABI requires a plt symbol on all platforms.
5065
5066 Cf. Linker and Libraries Guide, Ch. 2, Link-Editor, Generating the Output
5067 File, p.63. */
84865015 5068#undef elf_backend_want_plt_sym
a6cc6b3b
RO		 5069#define elf_backend_want_plt_sym 1
5070
84865015
NC		 5071#undef elf_backend_strtab_flags
5072#define elf_backend_strtab_flags SHF_STRINGS
5073
5074static bfd_boolean
5522f910
NC		 5075elf64_x86_64_copy_solaris_special_section_fields (const bfd *ibfd ATTRIBUTE_UNUSED,
5076 bfd *obfd ATTRIBUTE_UNUSED,
5077 const Elf_Internal_Shdr *isection ATTRIBUTE_UNUSED,
5078 Elf_Internal_Shdr *osection ATTRIBUTE_UNUSED)
84865015
NC		 5079{
5080 /* PR 19938: FIXME: Need to add code for setting the sh_info
5081 and sh_link fields of Solaris specific section types. */
5082 return FALSE;
5083}
5084
5522f910
NC		 5085#undef elf_backend_copy_special_section_fields
5086#define elf_backend_copy_special_section_fields elf64_x86_64_copy_solaris_special_section_fields
84865015 5087
a6cc6b3b
RO		 5088#include "elf64-target.h"
5089
8059fb19
RM		 5090/* Native Client support. */
5091
64b384e1
RM		 5092static bfd_boolean
5093elf64_x86_64_nacl_elf_object_p (bfd *abfd)
5094{
5095 /* Set the right machine number for a NaCl x86-64 ELF64 file. */
5096 bfd_default_set_arch_mach (abfd, bfd_arch_i386, bfd_mach_x86_64_nacl);
5097 return TRUE;
5098}
5099
8059fb19 5100#undef TARGET_LITTLE_SYM
6d00b590 5101#define TARGET_LITTLE_SYM x86_64_elf64_nacl_vec
8059fb19
RM		 5102#undef TARGET_LITTLE_NAME
5103#define TARGET_LITTLE_NAME "elf64-x86-64-nacl"
5104#undef elf64_bed
5105#define elf64_bed elf64_x86_64_nacl_bed
5106
5107#undef ELF_MAXPAGESIZE
5108#undef ELF_MINPAGESIZE
5109#undef ELF_COMMONPAGESIZE
5110#define ELF_MAXPAGESIZE 0x10000
5111#define ELF_MINPAGESIZE 0x10000
5112#define ELF_COMMONPAGESIZE 0x10000
5113
5114/* Restore defaults. */
5115#undef ELF_OSABI
5116#undef elf_backend_static_tls_alignment
5117#undef elf_backend_want_plt_sym
5118#define elf_backend_want_plt_sym 0
84865015 5119#undef elf_backend_strtab_flags
5522f910 5120#undef elf_backend_copy_special_section_fields
8059fb19
RM		 5121
5122/* NaCl uses substantially different PLT entries for the same effects. */
5123
5124#undef elf_backend_plt_alignment
5125#define elf_backend_plt_alignment 5
5126#define NACL_PLT_ENTRY_SIZE 64
5127#define NACLMASK 0xe0 /* 32-byte alignment mask. */
5128
5129static const bfd_byte elf_x86_64_nacl_plt0_entry[NACL_PLT_ENTRY_SIZE] =
5130 {
07d6d2b8 5131 0xff, 0x35, 8, 0, 0, 0, /* pushq GOT+8(%rip) */
8059fb19 5132 0x4c, 0x8b, 0x1d, 16, 0, 0, 0, /* mov GOT+16(%rip), %r11 */
07d6d2b8
AM		 5133 0x41, 0x83, 0xe3, NACLMASK, /* and $-32, %r11d */
5134 0x4d, 0x01, 0xfb, /* add %r15, %r11 */
5135 0x41, 0xff, 0xe3, /* jmpq *%r11 */
8059fb19 5136
ea2d813e 5137 /* 9-byte nop sequence to pad out to the next 32-byte boundary. */
70cc877f 5138 0x66, 0x0f, 0x1f, 0x84, 0, 0, 0, 0, 0, /* nopw 0x0(%rax,%rax,1) */
ea2d813e
RM		 5139
5140 /* 32 bytes of nop to pad out to the standard size. */
3ddf1bdd 5141 0x66, 0x66, 0x66, 0x66, 0x66, 0x66, /* excess data16 prefixes */
8059fb19 5142 0x2e, 0x0f, 0x1f, 0x84, 0, 0, 0, 0, 0, /* nopw %cs:0x0(%rax,%rax,1) */
3ddf1bdd 5143 0x66, 0x66, 0x66, 0x66, 0x66, 0x66, /* excess data16 prefixes */
8059fb19 5144 0x2e, 0x0f, 0x1f, 0x84, 0, 0, 0, 0, 0, /* nopw %cs:0x0(%rax,%rax,1) */
07d6d2b8
AM		 5145 0x66, /* excess data16 prefix */
5146 0x90 /* nop */
8059fb19
RM		 5147 };
5148
5149static const bfd_byte elf_x86_64_nacl_plt_entry[NACL_PLT_ENTRY_SIZE] =
5150 {
5151 0x4c, 0x8b, 0x1d, 0, 0, 0, 0, /* mov name@GOTPCREL(%rip),%r11 */
07d6d2b8
AM		 5152 0x41, 0x83, 0xe3, NACLMASK, /* and $-32, %r11d */
5153 0x4d, 0x01, 0xfb, /* add %r15, %r11 */
5154 0x41, 0xff, 0xe3, /* jmpq *%r11 */
8059fb19
RM		 5155
5156 /* 15-byte nop sequence to pad out to the next 32-byte boundary. */
3ddf1bdd 5157 0x66, 0x66, 0x66, 0x66, 0x66, 0x66, /* excess data16 prefixes */
8059fb19
RM		 5158 0x2e, 0x0f, 0x1f, 0x84, 0, 0, 0, 0, 0, /* nopw %cs:0x0(%rax,%rax,1) */
5159
5160 /* Lazy GOT entries point here (32-byte aligned). */
07d6d2b8
AM		 5161 0x68, /* pushq immediate */
5162 0, 0, 0, 0, /* replaced with index into relocation table. */
5163 0xe9, /* jmp relative */
5164 0, 0, 0, 0, /* replaced with offset to start of .plt0. */
8059fb19 5165
07d6d2b8 5166 /* 22 bytes of nop to pad out to the standard size. */
3ddf1bdd 5167 0x66, 0x66, 0x66, 0x66, 0x66, 0x66, /* excess data16 prefixes */
8059fb19 5168 0x2e, 0x0f, 0x1f, 0x84, 0, 0, 0, 0, 0, /* nopw %cs:0x0(%rax,%rax,1) */
07d6d2b8 5169 0x0f, 0x1f, 0x80, 0, 0, 0, 0, /* nopl 0x0(%rax) */
8059fb19
RM		 5170 };
5171
5172/* .eh_frame covering the .plt section. */
5173
5174static const bfd_byte elf_x86_64_nacl_eh_frame_plt[] =
5175 {
07d6d2b8
AM		 5176#if (PLT_CIE_LENGTH != 20 \
5177 || PLT_FDE_LENGTH != 36 \
5178 || PLT_FDE_START_OFFSET != 4 + PLT_CIE_LENGTH + 8 \
8059fb19 5179 || PLT_FDE_LEN_OFFSET != 4 + PLT_CIE_LENGTH + 12)
851b6fa1 5180# error "Need elf_x86_backend_data parameters for eh_frame_plt offsets!"
8059fb19
RM		 5181#endif
5182 PLT_CIE_LENGTH, 0, 0, 0, /* CIE length */
5183 0, 0, 0, 0, /* CIE ID */
5184 1, /* CIE version */
07d6d2b8 5185 'z', 'R', 0, /* Augmentation string */
8059fb19 5186 1, /* Code alignment factor */
07d6d2b8 5187 0x78, /* Data alignment factor */
8059fb19
RM		 5188 16, /* Return address column */
5189 1, /* Augmentation size */
5190 DW_EH_PE_pcrel | DW_EH_PE_sdata4, /* FDE encoding */
5191 DW_CFA_def_cfa, 7, 8, /* DW_CFA_def_cfa: r7 (rsp) ofs 8 */
5192 DW_CFA_offset + 16, 1, /* DW_CFA_offset: r16 (rip) at cfa-8 */
5193 DW_CFA_nop, DW_CFA_nop,
5194
5195 PLT_FDE_LENGTH, 0, 0, 0, /* FDE length */
5196 PLT_CIE_LENGTH + 8, 0, 0, 0,/* CIE pointer */
5197 0, 0, 0, 0, /* R_X86_64_PC32 .plt goes here */
5198 0, 0, 0, 0, /* .plt size goes here */
5199 0, /* Augmentation size */
5200 DW_CFA_def_cfa_offset, 16, /* DW_CFA_def_cfa_offset: 16 */
5201 DW_CFA_advance_loc + 6, /* DW_CFA_advance_loc: 6 to __PLT__+6 */
5202 DW_CFA_def_cfa_offset, 24, /* DW_CFA_def_cfa_offset: 24 */
5203 DW_CFA_advance_loc + 58, /* DW_CFA_advance_loc: 58 to __PLT__+64 */
5204 DW_CFA_def_cfa_expression, /* DW_CFA_def_cfa_expression */
5205 13, /* Block length */
5206 DW_OP_breg7, 8, /* DW_OP_breg7 (rsp): 8 */
5207 DW_OP_breg16, 0, /* DW_OP_breg16 (rip): 0 */
5208 DW_OP_const1u, 63, DW_OP_and, DW_OP_const1u, 37, DW_OP_ge,
5209 DW_OP_lit3, DW_OP_shl, DW_OP_plus,
5210 DW_CFA_nop, DW_CFA_nop
5211 };
5212
765e526c 5213static const struct elf_x86_lazy_plt_layout elf_x86_64_nacl_plt =
8059fb19 5214 {
07d6d2b8
AM		 5215 elf_x86_64_nacl_plt0_entry, /* plt0_entry */
5216 NACL_PLT_ENTRY_SIZE, /* plt0_entry_size */
5217 elf_x86_64_nacl_plt_entry, /* plt_entry */
5218 NACL_PLT_ENTRY_SIZE, /* plt_entry_size */
5219 2, /* plt0_got1_offset */
5220 9, /* plt0_got2_offset */
5221 13, /* plt0_got2_insn_end */
5222 3, /* plt_got_offset */
5223 33, /* plt_reloc_offset */
5224 38, /* plt_plt_offset */
5225 7, /* plt_got_insn_size */
5226 42, /* plt_plt_insn_end */
5227 32, /* plt_lazy_offset */
5228 elf_x86_64_nacl_plt0_entry, /* pic_plt0_entry */
5229 elf_x86_64_nacl_plt_entry, /* pic_plt_entry */
5230 elf_x86_64_nacl_eh_frame_plt, /* eh_frame_plt */
38b12349
L		 5231 sizeof (elf_x86_64_nacl_eh_frame_plt) /* eh_frame_plt_size */
5232 };
5233
851b6fa1 5234static const struct elf_x86_backend_data elf_x86_64_nacl_arch_bed =
38b12349 5235 {
07d6d2b8 5236 is_nacl /* os */
8059fb19
RM		 5237 };
5238
5239#undef elf_backend_arch_data
5240#define elf_backend_arch_data &elf_x86_64_nacl_arch_bed
5241
64b384e1
RM		 5242#undef elf_backend_object_p
5243#define elf_backend_object_p elf64_x86_64_nacl_elf_object_p
5a68afcf
RM		 5244#undef elf_backend_modify_segment_map
5245#define elf_backend_modify_segment_map nacl_modify_segment_map
5246#undef elf_backend_modify_program_headers
5247#define elf_backend_modify_program_headers nacl_modify_program_headers
887badb3
RM		 5248#undef elf_backend_final_write_processing
5249#define elf_backend_final_write_processing nacl_final_write_processing
5a68afcf 5250
8059fb19
RM		 5251#include "elf64-target.h"
5252
5253/* Native Client x32 support. */
5254
64b384e1
RM		 5255static bfd_boolean
5256elf32_x86_64_nacl_elf_object_p (bfd *abfd)
5257{
5258 /* Set the right machine number for a NaCl x86-64 ELF32 file. */
5259 bfd_default_set_arch_mach (abfd, bfd_arch_i386, bfd_mach_x64_32_nacl);
5260 return TRUE;
5261}
5262
07d6d2b8 5263#undef TARGET_LITTLE_SYM
6d00b590 5264#define TARGET_LITTLE_SYM x86_64_elf32_nacl_vec
07d6d2b8 5265#undef TARGET_LITTLE_NAME
8059fb19
RM		 5266#define TARGET_LITTLE_NAME "elf32-x86-64-nacl"
5267#undef elf32_bed
5268#define elf32_bed elf32_x86_64_nacl_bed
5269
8059fb19
RM		 5270#define bfd_elf32_bfd_reloc_type_lookup \
5271 elf_x86_64_reloc_type_lookup
5272#define bfd_elf32_bfd_reloc_name_lookup \
5273 elf_x86_64_reloc_name_lookup
b7365e5d
L		 5274#define bfd_elf32_get_synthetic_symtab \
5275 elf_x86_64_get_synthetic_symtab
8059fb19
RM		 5276
5277#undef elf_backend_object_p
5278#define elf_backend_object_p \
64b384e1 5279 elf32_x86_64_nacl_elf_object_p
8059fb19
RM		 5280
5281#undef elf_backend_bfd_from_remote_memory
5282#define elf_backend_bfd_from_remote_memory \
5283 _bfd_elf32_bfd_from_remote_memory
5284
5285#undef elf_backend_size_info
5286#define elf_backend_size_info \
5287 _bfd_elf32_size_info
5288
5289#include "elf32-target.h"
5290
5291/* Restore defaults. */
5a68afcf 5292#undef elf_backend_object_p
8059fb19 5293#define elf_backend_object_p elf64_x86_64_elf_object_p
5a68afcf
RM		 5294#undef elf_backend_bfd_from_remote_memory
5295#undef elf_backend_size_info
5296#undef elf_backend_modify_segment_map
5297#undef elf_backend_modify_program_headers
887badb3 5298#undef elf_backend_final_write_processing
8059fb19 5299
8a9036a4
L		 5300/* Intel L1OM support. */
5301
5302static bfd_boolean
5303elf64_l1om_elf_object_p (bfd *abfd)
5304{
5305 /* Set the right machine number for an L1OM elf64 file. */
5306 bfd_default_set_arch_mach (abfd, bfd_arch_l1om, bfd_mach_l1om);
5307 return TRUE;
5308}
5309
5310#undef TARGET_LITTLE_SYM
6d00b590 5311#define TARGET_LITTLE_SYM l1om_elf64_vec
8a9036a4
L		 5312#undef TARGET_LITTLE_NAME
5313#define TARGET_LITTLE_NAME "elf64-l1om"
5314#undef ELF_ARCH
5315#define ELF_ARCH bfd_arch_l1om
5316
5317#undef ELF_MACHINE_CODE
5318#define ELF_MACHINE_CODE EM_L1OM
5319
5320#undef ELF_OSABI
5321
5322#undef elf64_bed
5323#define elf64_bed elf64_l1om_bed
5324
5325#undef elf_backend_object_p
5326#define elf_backend_object_p elf64_l1om_elf_object_p
5327
8059fb19
RM		 5328/* Restore defaults. */
5329#undef ELF_MAXPAGESIZE
5330#undef ELF_MINPAGESIZE
5331#undef ELF_COMMONPAGESIZE
5332#define ELF_MAXPAGESIZE 0x200000
5333#define ELF_MINPAGESIZE 0x1000
5334#define ELF_COMMONPAGESIZE 0x1000
5335#undef elf_backend_plt_alignment
5336#define elf_backend_plt_alignment 4
5337#undef elf_backend_arch_data
5338#define elf_backend_arch_data &elf_x86_64_arch_bed
1a0c107f 5339
8a9036a4
L		 5340#include "elf64-target.h"
5341
5342/* FreeBSD L1OM support. */
5343
5344#undef TARGET_LITTLE_SYM
6d00b590 5345#define TARGET_LITTLE_SYM l1om_elf64_fbsd_vec
8a9036a4
L		 5346#undef TARGET_LITTLE_NAME
5347#define TARGET_LITTLE_NAME "elf64-l1om-freebsd"
5348
5349#undef ELF_OSABI
5350#define ELF_OSABI ELFOSABI_FREEBSD
5351
5352#undef elf64_bed
5353#define elf64_bed elf64_l1om_fbsd_bed
5354
8a9036a4 5355#include "elf64-target.h"
351f65ca 5356
7a9068fe
L		 5357/* Intel K1OM support. */
5358
5359static bfd_boolean
5360elf64_k1om_elf_object_p (bfd *abfd)
5361{
5362 /* Set the right machine number for an K1OM elf64 file. */
5363 bfd_default_set_arch_mach (abfd, bfd_arch_k1om, bfd_mach_k1om);
5364 return TRUE;
5365}
5366
5367#undef TARGET_LITTLE_SYM
6d00b590 5368#define TARGET_LITTLE_SYM k1om_elf64_vec
7a9068fe
L		 5369#undef TARGET_LITTLE_NAME
5370#define TARGET_LITTLE_NAME "elf64-k1om"
5371#undef ELF_ARCH
5372#define ELF_ARCH bfd_arch_k1om
5373
5374#undef ELF_MACHINE_CODE
5375#define ELF_MACHINE_CODE EM_K1OM
5376
5377#undef ELF_OSABI
5378
5379#undef elf64_bed
5380#define elf64_bed elf64_k1om_bed
5381
5382#undef elf_backend_object_p
5383#define elf_backend_object_p elf64_k1om_elf_object_p
5384
5385#undef elf_backend_static_tls_alignment
5386
5387#undef elf_backend_want_plt_sym
5388#define elf_backend_want_plt_sym 0
5389
5390#include "elf64-target.h"
5391
5392/* FreeBSD K1OM support. */
5393
5394#undef TARGET_LITTLE_SYM
6d00b590 5395#define TARGET_LITTLE_SYM k1om_elf64_fbsd_vec
7a9068fe
L		 5396#undef TARGET_LITTLE_NAME
5397#define TARGET_LITTLE_NAME "elf64-k1om-freebsd"
5398
5399#undef ELF_OSABI
5400#define ELF_OSABI ELFOSABI_FREEBSD
5401
5402#undef elf64_bed
5403#define elf64_bed elf64_k1om_fbsd_bed
5404
5405#include "elf64-target.h"
5406
351f65ca
L		 5407/* 32bit x86-64 support. */
5408
351f65ca 5409#undef TARGET_LITTLE_SYM
6d00b590 5410#define TARGET_LITTLE_SYM x86_64_elf32_vec
351f65ca
L		 5411#undef TARGET_LITTLE_NAME
5412#define TARGET_LITTLE_NAME "elf32-x86-64"
8059fb19 5413#undef elf32_bed
351f65ca
L		 5414
5415#undef ELF_ARCH
5416#define ELF_ARCH bfd_arch_i386
5417
5418#undef ELF_MACHINE_CODE
5419#define ELF_MACHINE_CODE EM_X86_64
5420
351f65ca
L		 5421#undef ELF_OSABI
5422
351f65ca
L		 5423#undef elf_backend_object_p
5424#define elf_backend_object_p \
5425 elf32_x86_64_elf_object_p
5426
5427#undef elf_backend_bfd_from_remote_memory
5428#define elf_backend_bfd_from_remote_memory \
5429 _bfd_elf32_bfd_from_remote_memory
5430
5431#undef elf_backend_size_info
5432#define elf_backend_size_info \
5433 _bfd_elf32_size_info
5434
5435#include "elf32-target.h"
GDB Binutils - Deliverables
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