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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 */
4eca0228
AM		 285 _bfd_error_handler (_("%B: invalid relocation type %d"),
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 */
d42c267e 1335 (_("%B: TLS transition from %s to %s against `%s' at %#Lx "
142411ca 1336 "in section `%A' failed"),
d42c267e 1337 abfd, from->name, to->name, name, 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 */
4eca0228 1404 _bfd_error_handler (_("%B: 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 */
4eca0228
AM		 1823 _bfd_error_handler (_("%B: bad symbol index: %d"),
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 */
d1534d16
L		 1889 (_("%B: relocation %s against symbol `%s' isn't "
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 */
63a5468a
AM		 2031 (_("%B: '%s' accessed both as normal and"
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)
2138 h->pointer_equality_needed = 1;
2139 }
2140 else if (r_type != R_X86_64_PC32_BND
2141 && r_type != R_X86_64_PC64)
04ebc307
L		 2142 {
2143 h->pointer_equality_needed = 1;
2144 /* At run-time, R_X86_64_64 can be resolved for both
2145 x86-64 and x32. But R_X86_64_32 and R_X86_64_32S
2146 can only be resolved for x32. */
2147 if ((sec->flags & SEC_READONLY) == 0
2148 && (r_type == R_X86_64_64
2149 || (!ABI_64_P (abfd)
2150 && (r_type == R_X86_64_32
2151 || r_type == R_X86_64_32S))))
79b0c981
L		 2152 func_pointer_ref = TRUE;
2153 }
2154
2155 if (!func_pointer_ref)
2156 {
2157 /* If this reloc is in a read-only section, we might
2158 need a copy reloc. We can't check reliably at this
2159 stage whether the section is read-only, as input
2160 sections have not yet been mapped to output sections.
2161 Tentatively set the flag for now, and correct in
2162 adjust_dynamic_symbol. */
2163 h->non_got_ref = 1;
2164
2165 /* We may need a .plt entry if the symbol is a function
2166 defined in a shared lib or is a function referenced
2167 from the code or read-only section. */
2168 if (!h->def_regular
2169 || (sec->flags & (SEC_CODE | SEC_READONLY)) != 0)
2170 h->plt.refcount = 1;
04ebc307 2171 }
c434dee6 2172 }
70256ad8 2173
06a6a421 2174 size_reloc = FALSE;
6a3e1bae 2175do_size:
daf1c414
L		 2176 if (NEED_DYNAMIC_RELOCATION_P (info, h, sec, r_type,
2177 htab->pointer_r_type))
70256ad8 2178 {
e03a8ed8
L		 2179 struct elf_dyn_relocs *p;
2180 struct elf_dyn_relocs **head;
c434dee6
AJ		 2181
2182 /* We must copy these reloc types into the output file.
2183 Create a reloc section in dynobj and make room for
2184 this reloc. */
70256ad8
AJ		 2185 if (sreloc == NULL)
2186 {
83bac4b0 2187 sreloc = _bfd_elf_make_dynamic_reloc_section
82e96e07
L		 2188 (sec, htab->elf.dynobj, ABI_64_P (abfd) ? 3 : 2,
2189 abfd, /*rela?*/ TRUE);
70256ad8 2190
70256ad8 2191 if (sreloc == NULL)
afd9acee 2192 goto error_return;
70256ad8
AJ		 2193 }
2194
c434dee6
AJ		 2195 /* If this is a global symbol, we count the number of
2196 relocations we need for this symbol. */
2197 if (h != NULL)
aec6b87e 2198 head = &eh->dyn_relocs;
c434dee6
AJ		 2199 else
2200 {
2201 /* Track dynamic relocs needed for local syms too.
2202 We really need local syms available to do this
2203 easily. Oh well. */
c434dee6 2204 asection *s;
87d72d41 2205 void **vpp;
87d72d41
AM		 2206
2207 isym = bfd_sym_from_r_symndx (&htab->sym_cache,
2208 abfd, r_symndx);
2209 if (isym == NULL)
afd9acee 2210 goto error_return;
87d72d41
AM		 2211
2212 s = bfd_section_from_elf_index (abfd, isym->st_shndx);
c434dee6 2213 if (s == NULL)
87d72d41 2214 s = sec;
70256ad8 2215
e81d3500
DD		 2216 /* Beware of type punned pointers vs strict aliasing
2217 rules. */
2218 vpp = &(elf_section_data (s)->local_dynrel);
e03a8ed8 2219 head = (struct elf_dyn_relocs **)vpp;
c434dee6 2220 }
70256ad8 2221
c434dee6
AJ		 2222 p = *head;
2223 if (p == NULL || p->sec != sec)
2224 {
2225 bfd_size_type amt = sizeof *p;
d8045f23 2226
e03a8ed8 2227 p = ((struct elf_dyn_relocs *)
c434dee6 2228 bfd_alloc (htab->elf.dynobj, amt));
70256ad8 2229 if (p == NULL)
afd9acee 2230 goto error_return;
c434dee6
AJ		 2231 p->next = *head;
2232 *head = p;
2233 p->sec = sec;
2234 p->count = 0;
2235 p->pc_count = 0;
70256ad8 2236 }
c434dee6
AJ		 2237
2238 p->count += 1;
06a6a421 2239 /* Count size relocation as PC-relative relocation. */
daf1c414 2240 if (X86_PCREL_TYPE_P (r_type) || size_reloc)
c434dee6 2241 p->pc_count += 1;
70256ad8
AJ		 2242 }
2243 break;
fe4770f4
AJ		 2244
2245 /* This relocation describes the C++ object vtable hierarchy.
2246 Reconstruct it for later use during GC. */
2247 case R_X86_64_GNU_VTINHERIT:
c152c796 2248 if (!bfd_elf_gc_record_vtinherit (abfd, sec, h, rel->r_offset))
afd9acee 2249 goto error_return;
fe4770f4
AJ		 2250 break;
2251
2252 /* This relocation describes which C++ vtable entries are actually
2253 used. Record for later use during GC. */
2254 case R_X86_64_GNU_VTENTRY:
d17e0c6e
JB		 2255 BFD_ASSERT (h != NULL);
2256 if (h != NULL
2257 && !bfd_elf_gc_record_vtentry (abfd, sec, h, rel->r_addend))
afd9acee 2258 goto error_return;
fe4770f4 2259 break;
c434dee6
AJ		 2260
2261 default:
2262 break;
70256ad8
AJ		 2263 }
2264 }
2265
bedfd056
L		 2266 if (elf_section_data (sec)->this_hdr.contents != contents)
2267 {
5e5e02ae 2268 if (!converted && !info->keep_memory)
bedfd056
L		 2269 free (contents);
2270 else
2271 {
5e5e02ae
L		 2272 /* Cache the section contents for elf_link_input_bfd if any
2273 load is converted or --no-keep-memory isn't used. */
bedfd056
L		 2274 elf_section_data (sec)->this_hdr.contents = contents;
2275 }
2276 }
2277
5e5e02ae
L		 2278 /* Cache relocations if any load is converted. */
2279 if (elf_section_data (sec)->relocs != relocs && converted)
2280 elf_section_data (sec)->relocs = (Elf_Internal_Rela *) relocs;
2281
b34976b6 2282 return TRUE;
afd9acee
L		 2283
2284error_return:
bedfd056
L		 2285 if (elf_section_data (sec)->this_hdr.contents != contents)
2286 free (contents);
afd9acee
L		 2287 sec->check_relocs_failed = 1;
2288 return FALSE;
70256ad8
AJ		 2289}
2290
bffbf940
JJ		 2291/* Return the relocation value for @tpoff relocation
2292 if STT_TLS virtual address is ADDRESS. */
2293
2294static bfd_vma
351f65ca 2295elf_x86_64_tpoff (struct bfd_link_info *info, bfd_vma address)
bffbf940 2296{
e1918d23 2297 struct elf_link_hash_table *htab = elf_hash_table (info);
7dc98aea
RO		 2298 const struct elf_backend_data *bed = get_elf_backend_data (info->output_bfd);
2299 bfd_vma static_tls_size;
bffbf940
JJ		 2300
2301 /* If tls_segment is NULL, we should have signalled an error already. */
e1918d23 2302 if (htab->tls_sec == NULL)
bffbf940 2303 return 0;
7dc98aea
RO		 2304
2305 /* Consider special static TLS alignment requirements. */
2306 static_tls_size = BFD_ALIGN (htab->tls_size, bed->static_tls_alignment);
2307 return address - static_tls_size - htab->tls_sec->vma;
bffbf940
JJ		 2308}
2309
90f487df
L		 2310/* Is the instruction before OFFSET in CONTENTS a 32bit relative
2311 branch? */
2312
2313static bfd_boolean
2314is_32bit_relative_branch (bfd_byte *contents, bfd_vma offset)
2315{
2316 /* Opcode Instruction
2317 0xe8 call
2318 0xe9 jump
2319 0x0f 0x8x conditional jump */
2320 return ((offset > 0
2321 && (contents [offset - 1] == 0xe8
2322 || contents [offset - 1] == 0xe9))
2323 || (offset > 1
2324 && contents [offset - 2] == 0x0f
2325 && (contents [offset - 1] & 0xf0) == 0x80));
2326}
2327
8d88c4ca
NC		 2328/* Relocate an x86_64 ELF section. */
2329
b34976b6 2330static bfd_boolean
351f65ca
L		 2331elf_x86_64_relocate_section (bfd *output_bfd,
2332 struct bfd_link_info *info,
2333 bfd *input_bfd,
2334 asection *input_section,
2335 bfd_byte *contents,
2336 Elf_Internal_Rela *relocs,
2337 Elf_Internal_Sym *local_syms,
2338 asection **local_sections)
8d88c4ca 2339{
0afcef53 2340 struct elf_x86_link_hash_table *htab;
8d88c4ca
NC		 2341 Elf_Internal_Shdr *symtab_hdr;
2342 struct elf_link_hash_entry **sym_hashes;
2343 bfd_vma *local_got_offsets;
67a4f2b7 2344 bfd_vma *local_tlsdesc_gotents;
c434dee6 2345 Elf_Internal_Rela *rel;
60f2e42e 2346 Elf_Internal_Rela *wrel;
8d88c4ca 2347 Elf_Internal_Rela *relend;
38b12349 2348 unsigned int plt_entry_size;
8d88c4ca 2349
338c190a
L		 2350 /* Skip if check_relocs failed. */
2351 if (input_section->check_relocs_failed)
2352 return FALSE;
2353
0afcef53 2354 htab = elf_x86_hash_table (info, X86_64_ELF_DATA);
4dfe6ac6
NC		 2355 if (htab == NULL)
2356 return FALSE;
fe53b4a4
L		 2357
2358 BFD_ASSERT (is_x86_elf (input_bfd, htab));
2359
765e526c 2360 plt_entry_size = htab->plt.plt_entry_size;
0ffa91dd 2361 symtab_hdr = &elf_symtab_hdr (input_bfd);
8d88c4ca
NC		 2362 sym_hashes = elf_sym_hashes (input_bfd);
2363 local_got_offsets = elf_local_got_offsets (input_bfd);
0afcef53 2364 local_tlsdesc_gotents = elf_x86_local_tlsdesc_gotent (input_bfd);
8d88c4ca 2365
0afcef53 2366 _bfd_x86_elf_set_tls_module_base (info);
9f03412a 2367
60f2e42e 2368 rel = wrel = relocs;
8d88c4ca 2369 relend = relocs + input_section->reloc_count;
60f2e42e 2370 for (; rel < relend; wrel++, rel++)
8d88c4ca 2371 {
419414ea 2372 unsigned int r_type, r_type_tls;
8d88c4ca
NC		 2373 reloc_howto_type *howto;
2374 unsigned long r_symndx;
2375 struct elf_link_hash_entry *h;
0afcef53 2376 struct elf_x86_link_hash_entry *eh;
8d88c4ca
NC		 2377 Elf_Internal_Sym *sym;
2378 asection *sec;
0ff2b86e 2379 bfd_vma off, offplt, plt_offset;
8d88c4ca 2380 bfd_vma relocation;
b34976b6 2381 bfd_boolean unresolved_reloc;
8d88c4ca 2382 bfd_reloc_status_type r;
bffbf940 2383 int tls_type;
0ff2b86e 2384 asection *base_got, *resolved_plt;
1788fc08 2385 bfd_vma st_size;
aec6b87e 2386 bfd_boolean resolved_to_zero;
9e9821dd 2387 bfd_boolean relative_reloc;
78984959 2388 bfd_boolean converted_reloc;
aebcc8ff 2389 bfd_boolean need_copy_reloc_in_pie;
8d88c4ca 2390
351f65ca 2391 r_type = ELF32_R_TYPE (rel->r_info);
fe4770f4
AJ		 2392 if (r_type == (int) R_X86_64_GNU_VTINHERIT
2393 || r_type == (int) R_X86_64_GNU_VTENTRY)
18954b29
L		 2394 {
2395 if (wrel != rel)
2396 *wrel = *rel;
2397 continue;
2398 }
8d88c4ca 2399
78984959
L		 2400 converted_reloc = (r_type & R_X86_64_converted_reloc_bit) != 0;
2401 r_type &= ~R_X86_64_converted_reloc_bit;
2402
9911c0fc 2403 if (r_type >= (int) R_X86_64_standard)
47aeb64c 2404 return _bfd_unrecognized_reloc (input_bfd, input_section, r_type);
8d88c4ca 2405
d7921315 2406 if (r_type != (int) R_X86_64_32
eed180f8 2407 || ABI_64_P (output_bfd))
d7921315
L		 2408 howto = x86_64_elf_howto_table + r_type;
2409 else
2410 howto = (x86_64_elf_howto_table
2411 + ARRAY_SIZE (x86_64_elf_howto_table) - 1);
351f65ca 2412 r_symndx = htab->r_sym (rel->r_info);
8d88c4ca
NC		 2413 h = NULL;
2414 sym = NULL;
2415 sec = NULL;
b34976b6 2416 unresolved_reloc = FALSE;
8d88c4ca 2417 if (r_symndx < symtab_hdr->sh_info)
8da6118f
KH		 2418 {
2419 sym = local_syms + r_symndx;
2420 sec = local_sections[r_symndx];
c434dee6 2421
c25bc9fc
L		 2422 relocation = _bfd_elf_rela_local_sym (output_bfd, sym,
2423 &sec, rel);
1788fc08 2424 st_size = sym->st_size;
c25bc9fc
L		 2425
2426 /* Relocate against local STT_GNU_IFUNC symbol. */
0e1862bb 2427 if (!bfd_link_relocatable (info)
351f65ca 2428 && ELF_ST_TYPE (sym->st_info) == STT_GNU_IFUNC)
c25bc9fc 2429 {
0afcef53
L		 2430 h = _bfd_elf_x86_get_local_sym_hash (htab, input_bfd,
2431 rel, FALSE);
c25bc9fc
L		 2432 if (h == NULL)
2433 abort ();
2434
eed180f8 2435 /* Set STT_GNU_IFUNC symbol value. */
c25bc9fc
L		 2436 h->root.u.def.value = sym->st_value;
2437 h->root.u.def.section = sec;
2438 }
8da6118f 2439 }
8d88c4ca 2440 else
8da6118f 2441 {
c9736ba0 2442 bfd_boolean warned ATTRIBUTE_UNUSED;
62d887d4 2443 bfd_boolean ignored ATTRIBUTE_UNUSED;
c434dee6 2444
b2a8e766
AM		 2445 RELOC_FOR_GLOBAL_SYMBOL (info, input_bfd, input_section, rel,
2446 r_symndx, symtab_hdr, sym_hashes,
2447 h, sec, relocation,
62d887d4 2448 unresolved_reloc, warned, ignored);
1788fc08 2449 st_size = h->size;
8da6118f 2450 }
ab96bf03 2451
dbaa2011 2452 if (sec != NULL && discarded_section (sec))
60f2e42e
L		 2453 {
2454 _bfd_clear_contents (howto, input_bfd, input_section,
2455 contents + rel->r_offset);
2456 wrel->r_offset = rel->r_offset;
2457 wrel->r_info = 0;
2458 wrel->r_addend = 0;
2459
2460 /* For ld -r, remove relocations in debug sections against
2461 sections defined in discarded sections. Not done for
2462 eh_frame editing code expects to be present. */
2463 if (bfd_link_relocatable (info)
2464 && (input_section->flags & SEC_DEBUGGING))
2465 wrel--;
2466
2467 continue;
2468 }
ab96bf03 2469
0e1862bb 2470 if (bfd_link_relocatable (info))
2d5da473
L		 2471 {
2472 if (wrel != rel)
2473 *wrel = *rel;
2474 continue;
2475 }
ab96bf03 2476
1788fc08 2477 if (rel->r_addend == 0 && !ABI_64_P (output_bfd))
64d25c44 2478 {
1788fc08
L		 2479 if (r_type == R_X86_64_64)
2480 {
2481 /* For x32, treat R_X86_64_64 like R_X86_64_32 and
2482 zero-extend it to 64bit if addend is zero. */
2483 r_type = R_X86_64_32;
2484 memset (contents + rel->r_offset + 4, 0, 4);
2485 }
2486 else if (r_type == R_X86_64_SIZE64)
2487 {
2488 /* For x32, treat R_X86_64_SIZE64 like R_X86_64_SIZE32 and
2489 zero-extend it to 64bit if addend is zero. */
2490 r_type = R_X86_64_SIZE32;
2491 memset (contents + rel->r_offset + 4, 0, 4);
2492 }
64d25c44
L		 2493 }
2494
0afcef53 2495 eh = (struct elf_x86_link_hash_entry *) h;
0ff2b86e 2496
cbe950e9
L		 2497 /* Since STT_GNU_IFUNC symbol must go through PLT, we handle
2498 it here if it is defined in a non-shared object. */
2499 if (h != NULL
2500 && h->type == STT_GNU_IFUNC
2501 && h->def_regular)
2502 {
cbe950e9 2503 bfd_vma plt_index;
4c544807 2504 const char *name;
cbe950e9 2505
97dc35c8
L		 2506 if ((input_section->flags & SEC_ALLOC) == 0)
2507 {
2508 /* Dynamic relocs are not propagated for SEC_DEBUGGING
2509 sections because such sections are not SEC_ALLOC and
2510 thus ld.so will not process them. */
2511 if ((input_section->flags & SEC_DEBUGGING) != 0)
0eace210 2512 continue;
97dc35c8
L		 2513 abort ();
2514 }
233cc9c1
L		 2515
2516 switch (r_type)
2517 {
2518 default:
2519 break;
2520
2521 case R_X86_64_GOTPCREL:
2522 case R_X86_64_GOTPCRELX:
2523 case R_X86_64_REX_GOTPCRELX:
2524 case R_X86_64_GOTPCREL64:
2525 base_got = htab->elf.sgot;
2526 off = h->got.offset;
2527
2528 if (base_got == NULL)
2529 abort ();
2530
2531 if (off == (bfd_vma) -1)
2532 {
2533 /* We can't use h->got.offset here to save state, or
2534 even just remember the offset, as finish_dynamic_symbol
2535 would use that as offset into .got. */
2536
2537 if (h->plt.offset == (bfd_vma) -1)
2538 abort ();
2539
2540 if (htab->elf.splt != NULL)
2541 {
38b12349 2542 plt_index = (h->plt.offset / plt_entry_size
765e526c 2543 - htab->plt.has_plt0);
233cc9c1
L		 2544 off = (plt_index + 3) * GOT_ENTRY_SIZE;
2545 base_got = htab->elf.sgotplt;
2546 }
2547 else
2548 {
2549 plt_index = h->plt.offset / plt_entry_size;
2550 off = plt_index * GOT_ENTRY_SIZE;
2551 base_got = htab->elf.igotplt;
2552 }
2553
2554 if (h->dynindx == -1
2555 || h->forced_local
2556 || info->symbolic)
2557 {
2558 /* This references the local defitionion. We must
2559 initialize this entry in the global offset table.
2560 Since the offset must always be a multiple of 8,
2561 we use the least significant bit to record
2562 whether we have initialized it already.
2563
2564 When doing a dynamic link, we create a .rela.got
2565 relocation entry to initialize the value. This
2566 is done in the finish_dynamic_symbol routine. */
2567 if ((off & 1) != 0)
2568 off &= ~1;
2569 else
2570 {
2571 bfd_put_64 (output_bfd, relocation,
2572 base_got->contents + off);
2573 /* Note that this is harmless for the GOTPLT64
2574 case, as -1 | 1 still is -1. */
2575 h->got.offset |= 1;
2576 }
2577 }
2578 }
2579
2580 relocation = (base_got->output_section->vma
2581 + base_got->output_offset + off);
2582
2583 goto do_relocation;
2584 }
2585
2586 if (h->plt.offset == (bfd_vma) -1)
2587 {
2588 /* Handle static pointers of STT_GNU_IFUNC symbols. */
2589 if (r_type == htab->pointer_r_type
2590 && (input_section->flags & SEC_CODE) == 0)
2591 goto do_ifunc_pointer;
2592 goto bad_ifunc_reloc;
2593 }
cbe950e9
L		 2594
2595 /* STT_GNU_IFUNC symbol must go through PLT. */
0ff2b86e
L		 2596 if (htab->elf.splt != NULL)
2597 {
f2c29a16 2598 if (htab->plt_second != NULL)
0ff2b86e 2599 {
f2c29a16
L		 2600 resolved_plt = htab->plt_second;
2601 plt_offset = eh->plt_second.offset;
0ff2b86e
L		 2602 }
2603 else
2604 {
2605 resolved_plt = htab->elf.splt;
2606 plt_offset = h->plt.offset;
2607 }
2608 }
2609 else
2610 {
2611 resolved_plt = htab->elf.iplt;
2612 plt_offset = h->plt.offset;
2613 }
2614
2615 relocation = (resolved_plt->output_section->vma
2616 + resolved_plt->output_offset + plt_offset);
cbe950e9
L		 2617
2618 switch (r_type)
2619 {
2620 default:
233cc9c1 2621bad_ifunc_reloc:
4c544807
L		 2622 if (h->root.root.string)
2623 name = h->root.root.string;
2624 else
2625 name = bfd_elf_sym_name (input_bfd, symtab_hdr, sym,
2626 NULL);
4eca0228 2627 _bfd_error_handler
695344c0 2628 /* xgettext:c-format */
cbe950e9 2629 (_("%B: relocation %s against STT_GNU_IFUNC "
233cc9c1
L		 2630 "symbol `%s' isn't supported"), input_bfd,
2631 howto->name, name);
cbe950e9
L		 2632 bfd_set_error (bfd_error_bad_value);
2633 return FALSE;
2634
2635 case R_X86_64_32S:
0e1862bb 2636 if (bfd_link_pic (info))
cbe950e9 2637 abort ();
710ab287
L		 2638 goto do_relocation;
2639
248775ba
L		 2640 case R_X86_64_32:
2641 if (ABI_64_P (output_bfd))
2642 goto do_relocation;
17672001 2643 /* FALLTHROUGH */
eed180f8 2644 case R_X86_64_64:
233cc9c1 2645do_ifunc_pointer:
710ab287
L		 2646 if (rel->r_addend != 0)
2647 {
4c544807
L		 2648 if (h->root.root.string)
2649 name = h->root.root.string;
2650 else
2651 name = bfd_elf_sym_name (input_bfd, symtab_hdr,
2652 sym, NULL);
4eca0228 2653 _bfd_error_handler
695344c0 2654 /* xgettext:c-format */
710ab287 2655 (_("%B: relocation %s against STT_GNU_IFUNC "
d42c267e 2656 "symbol `%s' has non-zero addend: %Ld"),
ef77d6af 2657 input_bfd, howto->name, name, rel->r_addend);
710ab287
L		 2658 bfd_set_error (bfd_error_bad_value);
2659 return FALSE;
2660 }
2661
2662 /* Generate dynamic relcoation only when there is a
233cc9c1
L		 2663 non-GOT reference in a shared object or there is no
2664 PLT. */
2665 if ((bfd_link_pic (info) && h->non_got_ref)
2666 || h->plt.offset == (bfd_vma) -1)
710ab287
L		 2667 {
2668 Elf_Internal_Rela outrel;
710ab287
L		 2669 asection *sreloc;
2670
c25bc9fc
L		 2671 /* Need a dynamic relocation to get the real function
2672 address. */
710ab287
L		 2673 outrel.r_offset = _bfd_elf_section_offset (output_bfd,
2674 info,
2675 input_section,
2676 rel->r_offset);
2677 if (outrel.r_offset == (bfd_vma) -1
2678 || outrel.r_offset == (bfd_vma) -2)
2679 abort ();
2680
2681 outrel.r_offset += (input_section->output_section->vma
2682 + input_section->output_offset);
2683
cf1070f1 2684 if (POINTER_LOCAL_IFUNC_P (info, h))
710ab287 2685 {
6322e5c5
L		 2686 info->callbacks->minfo (_("Local IFUNC function `%s' in %B\n"),
2687 h->root.root.string,
2688 h->root.u.def.section->owner);
2689
710ab287 2690 /* This symbol is resolved locally. */
56b8aada
L		 2691 outrel.r_info = htab->r_info (0, R_X86_64_IRELATIVE);
2692 outrel.r_addend = (h->root.u.def.value
2693 + h->root.u.def.section->output_section->vma
2694 + h->root.u.def.section->output_offset);
710ab287
L		 2695 }
2696 else
2697 {
351f65ca 2698 outrel.r_info = htab->r_info (h->dynindx, r_type);
710ab287
L		 2699 outrel.r_addend = 0;
2700 }
2701
233cc9c1
L		 2702 /* Dynamic relocations are stored in
2703 1. .rela.ifunc section in PIC object.
2704 2. .rela.got section in dynamic executable.
2705 3. .rela.iplt section in static executable. */
2706 if (bfd_link_pic (info))
2707 sreloc = htab->elf.irelifunc;
2708 else if (htab->elf.splt != NULL)
2709 sreloc = htab->elf.srelgot;
2710 else
2711 sreloc = htab->elf.irelplt;
351f65ca 2712 elf_append_rela (output_bfd, sreloc, &outrel);
710ab287
L		 2713
2714 /* If this reloc is against an external symbol, we
2715 do not want to fiddle with the addend. Otherwise,
2716 we need to include the symbol value so that it
2717 becomes an addend for the dynamic reloc. For an
2718 internal symbol, we have updated addend. */
56b8aada 2719 continue;
710ab287 2720 }
17672001 2721 /* FALLTHROUGH */
cbe950e9 2722 case R_X86_64_PC32:
c3320543 2723 case R_X86_64_PC32_BND:
cbe950e9
L		 2724 case R_X86_64_PC64:
2725 case R_X86_64_PLT32:
c3320543 2726 case R_X86_64_PLT32_BND:
cbe950e9 2727 goto do_relocation;
cbe950e9
L		 2728 }
2729 }
2730
aec6b87e 2731 resolved_to_zero = (eh != NULL
c5bce5c6 2732 && UNDEFINED_WEAK_RESOLVED_TO_ZERO (info, eh));
aec6b87e 2733
70256ad8
AJ		 2734 /* When generating a shared object, the relocations handled here are
2735 copied into the output file to be resolved at run time. */
2736 switch (r_type)
2737 {
2738 case R_X86_64_GOT32:
7b81dfbb 2739 case R_X86_64_GOT64:
70256ad8
AJ		 2740 /* Relocation is to the entry for this symbol in the global
2741 offset table. */
70256ad8 2742 case R_X86_64_GOTPCREL:
56ceb5b5
L		 2743 case R_X86_64_GOTPCRELX:
2744 case R_X86_64_REX_GOTPCRELX:
7b81dfbb
AJ		 2745 case R_X86_64_GOTPCREL64:
2746 /* Use global offset table entry as symbol value. */
2747 case R_X86_64_GOTPLT64:
de194d85 2748 /* This is obsolete and treated the same as GOT64. */
6de2ae4a 2749 base_got = htab->elf.sgot;
7b81dfbb 2750
6de2ae4a 2751 if (htab->elf.sgot == NULL)
c434dee6 2752 abort ();
053579d7 2753
9e9821dd 2754 relative_reloc = FALSE;
51e0a107 2755 if (h != NULL)
70256ad8 2756 {
c434dee6 2757 off = h->got.offset;
7b81dfbb 2758 if (h->needs_plt
eed180f8 2759 && h->plt.offset != (bfd_vma)-1
7b81dfbb
AJ		 2760 && off == (bfd_vma)-1)
2761 {
2762 /* We can't use h->got.offset here to save
2763 state, or even just remember the offset, as
2764 finish_dynamic_symbol would use that as offset into
2765 .got. */
38b12349 2766 bfd_vma plt_index = (h->plt.offset / plt_entry_size
765e526c 2767 - htab->plt.has_plt0);
7b81dfbb 2768 off = (plt_index + 3) * GOT_ENTRY_SIZE;
6de2ae4a 2769 base_got = htab->elf.sgotplt;
7b81dfbb
AJ		 2770 }
2771
2eba97c2 2772 if (RESOLVED_LOCALLY_P (info, h, htab))
51e0a107 2773 {
2eba97c2
L		 2774 /* We must initialize this entry in the global offset
2775 table. Since the offset must always be a multiple
2776 of 8, we use the least significant bit to record
2777 whether we have initialized it already.
51e0a107
JH		 2778
2779 When doing a dynamic link, we create a .rela.got
407443a3
AJ		 2780 relocation entry to initialize the value. This is
2781 done in the finish_dynamic_symbol routine. */
51e0a107
JH		 2782 if ((off & 1) != 0)
2783 off &= ~1;
2784 else
2785 {
2786 bfd_put_64 (output_bfd, relocation,
7b81dfbb
AJ		 2787 base_got->contents + off);
2788 /* Note that this is harmless for the GOTPLT64 case,
eed180f8 2789 as -1 | 1 still is -1. */
51e0a107 2790 h->got.offset |= 1;
9e9821dd 2791
f70656b2 2792 if (GENERATE_RELATIVE_RELOC_P (info, h))
9e9821dd
L		 2793 {
2794 /* If this symbol isn't dynamic in PIC,
2795 generate R_X86_64_RELATIVE here. */
2796 eh->no_finish_dynamic_symbol = 1;
2797 relative_reloc = TRUE;
2798 }
51e0a107
JH		 2799 }
2800 }
053579d7 2801 else
b34976b6 2802 unresolved_reloc = FALSE;
70256ad8 2803 }
51e0a107
JH		 2804 else
2805 {
c434dee6
AJ		 2806 if (local_got_offsets == NULL)
2807 abort ();
51e0a107
JH		 2808
2809 off = local_got_offsets[r_symndx];
2810
2811 /* The offset must always be a multiple of 8. We use
407443a3
AJ		 2812 the least significant bit to record whether we have
2813 already generated the necessary reloc. */
51e0a107
JH		 2814 if ((off & 1) != 0)
2815 off &= ~1;
2816 else
2817 {
c434dee6 2818 bfd_put_64 (output_bfd, relocation,
7b81dfbb 2819 base_got->contents + off);
9e9821dd 2820 local_got_offsets[r_symndx] |= 1;
51e0a107 2821
0e1862bb 2822 if (bfd_link_pic (info))
9e9821dd 2823 relative_reloc = TRUE;
51e0a107 2824 }
51e0a107 2825 }
6a2bda3f 2826
9e9821dd
L		 2827 if (relative_reloc)
2828 {
2829 asection *s;
2830 Elf_Internal_Rela outrel;
2831
2832 /* We need to generate a R_X86_64_RELATIVE reloc
2833 for the dynamic linker. */
2834 s = htab->elf.srelgot;
2835 if (s == NULL)
2836 abort ();
2837
2838 outrel.r_offset = (base_got->output_section->vma
2839 + base_got->output_offset
2840 + off);
2841 outrel.r_info = htab->r_info (0, R_X86_64_RELATIVE);
2842 outrel.r_addend = relocation;
2843 elf_append_rela (output_bfd, s, &outrel);
2844 }
2845
c434dee6
AJ		 2846 if (off >= (bfd_vma) -2)
2847 abort ();
2848
7b81dfbb
AJ		 2849 relocation = base_got->output_section->vma
2850 + base_got->output_offset + off;
56ceb5b5
L		 2851 if (r_type != R_X86_64_GOTPCREL
2852 && r_type != R_X86_64_GOTPCRELX
2853 && r_type != R_X86_64_REX_GOTPCRELX
2854 && r_type != R_X86_64_GOTPCREL64)
6de2ae4a
L		 2855 relocation -= htab->elf.sgotplt->output_section->vma
2856 - htab->elf.sgotplt->output_offset;
c434dee6 2857
70256ad8
AJ		 2858 break;
2859
d6ab8113
JB		 2860 case R_X86_64_GOTOFF64:
2861 /* Relocation is relative to the start of the global offset
2862 table. */
2863
3d949995
L		 2864 /* Check to make sure it isn't a protected function or data
2865 symbol for shared library since it may not be local when
e3c0e327
L		 2866 used as function address or with copy relocation. We also
2867 need to make sure that a symbol is referenced locally. */
0e1862bb 2868 if (bfd_link_pic (info) && h)
d6ab8113 2869 {
e3c0e327
L		 2870 if (!h->def_regular)
2871 {
2872 const char *v;
2873
2874 switch (ELF_ST_VISIBILITY (h->other))
2875 {
2876 case STV_HIDDEN:
2877 v = _("hidden symbol");
2878 break;
2879 case STV_INTERNAL:
2880 v = _("internal symbol");
2881 break;
2882 case STV_PROTECTED:
2883 v = _("protected symbol");
2884 break;
2885 default:
2886 v = _("symbol");
2887 break;
2888 }
2889
4eca0228 2890 _bfd_error_handler
695344c0 2891 /* xgettext:c-format */
63a5468a
AM		 2892 (_("%B: relocation R_X86_64_GOTOFF64 against undefined %s"
2893 " `%s' can not be used when making a shared object"),
e3c0e327
L		 2894 input_bfd, v, h->root.root.string);
2895 bfd_set_error (bfd_error_bad_value);
2896 return FALSE;
2897 }
0e1862bb 2898 else if (!bfd_link_executable (info)
6999821f 2899 && !SYMBOL_REFERENCES_LOCAL_P (info, h)
e3c0e327
L		 2900 && (h->type == STT_FUNC
2901 || h->type == STT_OBJECT)
2902 && ELF_ST_VISIBILITY (h->other) == STV_PROTECTED)
2903 {
4eca0228 2904 _bfd_error_handler
695344c0 2905 /* xgettext:c-format */
63a5468a
AM		 2906 (_("%B: relocation R_X86_64_GOTOFF64 against protected %s"
2907 " `%s' can not be used when making a shared object"),
e3c0e327
L		 2908 input_bfd,
2909 h->type == STT_FUNC ? "function" : "data",
2910 h->root.root.string);
2911 bfd_set_error (bfd_error_bad_value);
d6ab8113 2912 return FALSE;
e3c0e327 2913 }
d6ab8113
JB		 2914 }
2915
2916 /* Note that sgot is not involved in this
2917 calculation. We always want the start of .got.plt. If we
2918 defined _GLOBAL_OFFSET_TABLE_ in a different way, as is
2919 permitted by the ABI, we might have to change this
2920 calculation. */
6de2ae4a
L		 2921 relocation -= htab->elf.sgotplt->output_section->vma
2922 + htab->elf.sgotplt->output_offset;
d6ab8113
JB		 2923 break;
2924
2925 case R_X86_64_GOTPC32:
7b81dfbb 2926 case R_X86_64_GOTPC64:
d6ab8113 2927 /* Use global offset table as symbol value. */
6de2ae4a
L		 2928 relocation = htab->elf.sgotplt->output_section->vma
2929 + htab->elf.sgotplt->output_offset;
d6ab8113
JB		 2930 unresolved_reloc = FALSE;
2931 break;
7b81dfbb
AJ		 2932
2933 case R_X86_64_PLTOFF64:
2934 /* Relocation is PLT entry relative to GOT. For local
2935 symbols it's the symbol itself relative to GOT. */
eed180f8 2936 if (h != NULL
7b81dfbb 2937 /* See PLT32 handling. */
9d734efa
L		 2938 && (h->plt.offset != (bfd_vma) -1
2939 || eh->plt_got.offset != (bfd_vma) -1)
6de2ae4a 2940 && htab->elf.splt != NULL)
7b81dfbb 2941 {
9d734efa
L		 2942 if (eh->plt_got.offset != (bfd_vma) -1)
2943 {
2944 /* Use the GOT PLT. */
2945 resolved_plt = htab->plt_got;
2946 plt_offset = eh->plt_got.offset;
2947 }
f2c29a16 2948 else if (htab->plt_second != NULL)
0ff2b86e 2949 {
f2c29a16
L		 2950 resolved_plt = htab->plt_second;
2951 plt_offset = eh->plt_second.offset;
0ff2b86e
L		 2952 }
2953 else
2954 {
2955 resolved_plt = htab->elf.splt;
2956 plt_offset = h->plt.offset;
2957 }
2958
2959 relocation = (resolved_plt->output_section->vma
2960 + resolved_plt->output_offset
2961 + plt_offset);
7b81dfbb
AJ		 2962 unresolved_reloc = FALSE;
2963 }
2964
6de2ae4a
L		 2965 relocation -= htab->elf.sgotplt->output_section->vma
2966 + htab->elf.sgotplt->output_offset;
7b81dfbb 2967 break;
d6ab8113 2968
70256ad8 2969 case R_X86_64_PLT32:
c3320543 2970 case R_X86_64_PLT32_BND:
70256ad8
AJ		 2971 /* Relocation is to the entry for this symbol in the
2972 procedure linkage table. */
2973
2974 /* Resolve a PLT32 reloc against a local symbol directly,
407443a3 2975 without using the procedure linkage table. */
70256ad8
AJ		 2976 if (h == NULL)
2977 break;
2978
dd7e64d4
L		 2979 if ((h->plt.offset == (bfd_vma) -1
2980 && eh->plt_got.offset == (bfd_vma) -1)
6de2ae4a 2981 || htab->elf.splt == NULL)
70256ad8
AJ		 2982 {
2983 /* We didn't make a PLT entry for this symbol. This
407443a3
AJ		 2984 happens when statically linking PIC code, or when
2985 using -Bsymbolic. */
70256ad8
AJ		 2986 break;
2987 }
2988
dd7e64d4 2989 if (h->plt.offset != (bfd_vma) -1)
0ff2b86e 2990 {
f2c29a16 2991 if (htab->plt_second != NULL)
dd7e64d4 2992 {
f2c29a16
L		 2993 resolved_plt = htab->plt_second;
2994 plt_offset = eh->plt_second.offset;
dd7e64d4
L		 2995 }
2996 else
2997 {
2998 resolved_plt = htab->elf.splt;
2999 plt_offset = h->plt.offset;
3000 }
0ff2b86e
L		 3001 }
3002 else
3003 {
dd7e64d4
L		 3004 /* Use the GOT PLT. */
3005 resolved_plt = htab->plt_got;
3006 plt_offset = eh->plt_got.offset;
0ff2b86e
L		 3007 }
3008
3009 relocation = (resolved_plt->output_section->vma
3010 + resolved_plt->output_offset
3011 + plt_offset);
b34976b6 3012 unresolved_reloc = FALSE;
70256ad8
AJ		 3013 break;
3014
1788fc08
L		 3015 case R_X86_64_SIZE32:
3016 case R_X86_64_SIZE64:
1788fc08
L		 3017 /* Set to symbol size. */
3018 relocation = st_size;
3019 goto direct;
3020
fd8ab9e5
AJ		 3021 case R_X86_64_PC8:
3022 case R_X86_64_PC16:
3023 case R_X86_64_PC32:
c3320543 3024 case R_X86_64_PC32_BND:
6333bc0d 3025 /* Don't complain about -fPIC if the symbol is undefined when
7073b5b9
L		 3026 building executable unless it is unresolved weak symbol or
3027 -z nocopyreloc is used. */
07d6d2b8 3028 if ((input_section->flags & SEC_ALLOC) != 0
90f487df 3029 && (input_section->flags & SEC_READONLY) != 0
6333bc0d 3030 && h != NULL
aec6b87e 3031 && ((bfd_link_executable (info)
7073b5b9
L		 3032 && ((h->root.type == bfd_link_hash_undefweak
3033 && !resolved_to_zero)
a5b4ee94
L		 3034 || ((info->nocopyreloc
3035 || (eh->def_protected
3036 && elf_has_no_copy_on_protected (h->root.u.def.section->owner)))
7073b5b9
L		 3037 && h->def_dynamic
3038 && !(h->root.u.def.section->flags & SEC_CODE))))
c5bb8910 3039 || bfd_link_dll (info)))
6610a52d 3040 {
41bed6dd
L		 3041 bfd_boolean fail = FALSE;
3042 bfd_boolean branch
c3320543
L		 3043 = ((r_type == R_X86_64_PC32
3044 || r_type == R_X86_64_PC32_BND)
41bed6dd
L		 3045 && is_32bit_relative_branch (contents, rel->r_offset));
3046
6999821f 3047 if (SYMBOL_REFERENCES_LOCAL_P (info, h))
41bed6dd
L		 3048 {
3049 /* Symbol is referenced locally. Make sure it is
3050 defined locally or for a branch. */
8170f769
L		 3051 fail = (!(h->def_regular || ELF_COMMON_DEF_P (h))
3052 && !branch);
41bed6dd 3053 }
aec6b87e 3054 else if (!(bfd_link_pie (info)
bc696fd5 3055 && (h->needs_copy || eh->needs_copy)))
41bed6dd 3056 {
9a926d55
L		 3057 /* Symbol doesn't need copy reloc and isn't referenced
3058 locally. We only allow branch to symbol with
3059 non-default visibility. */
41bed6dd
L		 3060 fail = (!branch
3061 || ELF_ST_VISIBILITY (h->other) == STV_DEFAULT);
3062 }
3063
3064 if (fail)
aab921ad 3065 return elf_x86_64_need_pic (info, input_bfd, input_section,
338c190a 3066 h, NULL, NULL, howto);
6610a52d
L		 3067 }
3068 /* Fall through. */
3069
70256ad8
AJ		 3070 case R_X86_64_8:
3071 case R_X86_64_16:
3072 case R_X86_64_32:
d6ab8113 3073 case R_X86_64_PC64:
6b3db546 3074 case R_X86_64_64:
80643fbc 3075 /* FIXME: The ABI says the linker should make sure the value is
407443a3 3076 the same when it's zeroextended to 64 bit. */
c434dee6 3077
1788fc08 3078direct:
b1e24c02 3079 if ((input_section->flags & SEC_ALLOC) == 0)
c434dee6
AJ		 3080 break;
3081
aebcc8ff
L		 3082 need_copy_reloc_in_pie = (bfd_link_pie (info)
3083 && h != NULL
3084 && (h->needs_copy
3085 || eh->needs_copy
3086 || (h->root.type
3087 == bfd_link_hash_undefined))
3088 && (X86_PCREL_TYPE_P (r_type)
3089 || X86_SIZE_TYPE_P (r_type)));
3090
3091 if (GENERATE_DYNAMIC_RELOCATION_P (info, eh, r_type,
3092 need_copy_reloc_in_pie,
3093 resolved_to_zero, FALSE))
70256ad8
AJ		 3094 {
3095 Elf_Internal_Rela outrel;
b34976b6 3096 bfd_boolean skip, relocate;
c434dee6 3097 asection *sreloc;
70256ad8
AJ		 3098
3099 /* When generating a shared object, these relocations
3100 are copied into the output file to be resolved at run
407443a3 3101 time. */
b34976b6
AM		 3102 skip = FALSE;
3103 relocate = FALSE;
70256ad8 3104
c629eae0
JJ		 3105 outrel.r_offset =
3106 _bfd_elf_section_offset (output_bfd, info, input_section,
c434dee6 3107 rel->r_offset);
c629eae0 3108 if (outrel.r_offset == (bfd_vma) -1)
b34976b6 3109 skip = TRUE;
0fb19cbc 3110 else if (outrel.r_offset == (bfd_vma) -2)
b34976b6 3111 skip = TRUE, relocate = TRUE;
70256ad8
AJ		 3112
3113 outrel.r_offset += (input_section->output_section->vma
3114 + input_section->output_offset);
3115
3116 if (skip)
0bb2d96a 3117 memset (&outrel, 0, sizeof outrel);
c434dee6 3118
e74399c4 3119 else if (COPY_INPUT_RELOC_P (info, h, r_type))
70256ad8 3120 {
351f65ca 3121 outrel.r_info = htab->r_info (h->dynindx, r_type);
c434dee6 3122 outrel.r_addend = rel->r_addend;
70256ad8
AJ		 3123 }
3124 else
3125 {
4c10bbaa
L		 3126 /* This symbol is local, or marked to become local.
3127 When relocation overflow check is disabled, we
3128 convert R_X86_64_32 to dynamic R_X86_64_RELATIVE. */
3129 if (r_type == htab->pointer_r_type
3130 || (r_type == R_X86_64_32
3131 && info->no_reloc_overflow_check))
607c0e09 3132 {
b34976b6 3133 relocate = TRUE;
351f65ca 3134 outrel.r_info = htab->r_info (0, R_X86_64_RELATIVE);
607c0e09
AS		 3135 outrel.r_addend = relocation + rel->r_addend;
3136 }
64d25c44
L		 3137 else if (r_type == R_X86_64_64
3138 && !ABI_64_P (output_bfd))
3139 {
3140 relocate = TRUE;
3141 outrel.r_info = htab->r_info (0,
3142 R_X86_64_RELATIVE64);
3143 outrel.r_addend = relocation + rel->r_addend;
8cf0d2dd
L		 3144 /* Check addend overflow. */
3145 if ((outrel.r_addend & 0x80000000)
3146 != (rel->r_addend & 0x80000000))
3147 {
3148 const char *name;
268a8d3a 3149 int addend = rel->r_addend;
8cf0d2dd
L		 3150 if (h && h->root.root.string)
3151 name = h->root.root.string;
3152 else
3153 name = bfd_elf_sym_name (input_bfd, symtab_hdr,
3154 sym, NULL);
d42c267e
AM		 3155 _bfd_error_handler
3156 /* xgettext:c-format */
3157 (_("%B: addend %s%#x in relocation %s against "
3158 "symbol `%s' at %#Lx in section `%A' is "
3159 "out of range"),
3160 input_bfd, addend < 0 ? "-" : "", addend,
3161 howto->name, name, rel->r_offset, input_section);
8cf0d2dd
L		 3162 bfd_set_error (bfd_error_bad_value);
3163 return FALSE;
3164 }
64d25c44 3165 }
607c0e09
AS		 3166 else
3167 {
3168 long sindx;
3169
8517fae7 3170 if (bfd_is_abs_section (sec))
607c0e09
AS		 3171 sindx = 0;
3172 else if (sec == NULL || sec->owner == NULL)
3173 {
3174 bfd_set_error (bfd_error_bad_value);
b34976b6 3175 return FALSE;
607c0e09
AS		 3176 }
3177 else
3178 {
3179 asection *osec;
3180
74541ad4
AM		 3181 /* We are turning this relocation into one
3182 against a section symbol. It would be
3183 proper to subtract the symbol's value,
3184 osec->vma, from the emitted reloc addend,
3185 but ld.so expects buggy relocs. */
607c0e09
AS		 3186 osec = sec->output_section;
3187 sindx = elf_section_data (osec)->dynindx;
74541ad4
AM		 3188 if (sindx == 0)
3189 {
3190 asection *oi = htab->elf.text_index_section;
3191 sindx = elf_section_data (oi)->dynindx;
3192 }
3193 BFD_ASSERT (sindx != 0);
607c0e09
AS		 3194 }
3195
351f65ca 3196 outrel.r_info = htab->r_info (sindx, r_type);
607c0e09
AS		 3197 outrel.r_addend = relocation + rel->r_addend;
3198 }
70256ad8
AJ		 3199 }
3200
cbe950e9 3201 sreloc = elf_section_data (input_section)->sreloc;
d8045f23 3202
62d78908
L		 3203 if (sreloc == NULL || sreloc->contents == NULL)
3204 {
3205 r = bfd_reloc_notsupported;
3206 goto check_relocation_error;
3207 }
c434dee6 3208
351f65ca 3209 elf_append_rela (output_bfd, sreloc, &outrel);
70256ad8
AJ		 3210
3211 /* If this reloc is against an external symbol, we do
3212 not want to fiddle with the addend. Otherwise, we
3213 need to include the symbol value so that it becomes
3214 an addend for the dynamic reloc. */
0f88be7a 3215 if (! relocate)
70256ad8
AJ		 3216 continue;
3217 }
3218
3219 break;
3220
bffbf940 3221 case R_X86_64_TLSGD:
67a4f2b7
AO		 3222 case R_X86_64_GOTPC32_TLSDESC:
3223 case R_X86_64_TLSDESC_CALL:
bffbf940 3224 case R_X86_64_GOTTPOFF:
bffbf940
JJ		 3225 tls_type = GOT_UNKNOWN;
3226 if (h == NULL && local_got_offsets)
0afcef53 3227 tls_type = elf_x86_local_got_tls_type (input_bfd) [r_symndx];
bffbf940 3228 else if (h != NULL)
0afcef53 3229 tls_type = elf_x86_hash_entry (h)->tls_type;
142411ca 3230
419414ea 3231 r_type_tls = r_type;
351f65ca
L		 3232 if (! elf_x86_64_tls_transition (info, input_bfd,
3233 input_section, contents,
3234 symtab_hdr, sym_hashes,
419414ea 3235 &r_type_tls, tls_type, rel,
bedfd056 3236 relend, h, r_symndx, TRUE))
534a31f6 3237 return FALSE;
bffbf940 3238
419414ea 3239 if (r_type_tls == R_X86_64_TPOFF32)
bffbf940 3240 {
142411ca
L		 3241 bfd_vma roff = rel->r_offset;
3242
bffbf940 3243 BFD_ASSERT (! unresolved_reloc);
142411ca 3244
419414ea 3245 if (r_type == R_X86_64_TLSGD)
bffbf940 3246 {
52bc799a 3247 /* GD->LE transition. For 64bit, change
e2cbcd91
L		 3248 .byte 0x66; leaq foo@tlsgd(%rip), %rdi
3249 .word 0x6666; rex64; call __tls_get_addr@PLT
3250 or
3251 .byte 0x66; leaq foo@tlsgd(%rip), %rdi
3252 .byte 0x66; rex64
3253 call *__tls_get_addr@GOTPCREL(%rip)
3254 which may be converted to
3255 addr32 call __tls_get_addr
52bc799a 3256 into:
e2cbcd91
L		 3257 movq %fs:0, %rax
3258 leaq foo@tpoff(%rax), %rax
52bc799a 3259 For 32bit, change
e2cbcd91
L		 3260 leaq foo@tlsgd(%rip), %rdi
3261 .word 0x6666; rex64; call __tls_get_addr@PLT
3262 or
3263 leaq foo@tlsgd(%rip), %rdi
3264 .byte 0x66; rex64
3265 call *__tls_get_addr@GOTPCREL(%rip)
3266 which may be converted to
3267 addr32 call __tls_get_addr
52bc799a 3268 into:
e2cbcd91
L		 3269 movl %fs:0, %eax
3270 leaq foo@tpoff(%rax), %rax
5c98a14e 3271 For largepic, change:
e2cbcd91
L		 3272 leaq foo@tlsgd(%rip), %rdi
3273 movabsq $__tls_get_addr@pltoff, %rax
3274 addq %r15, %rax
3275 call *%rax
5c98a14e 3276 into:
e2cbcd91
L		 3277 movq %fs:0, %rax
3278 leaq foo@tpoff(%rax), %rax
3279 nopw 0x0(%rax,%rax,1) */
5c98a14e 3280 int largepic = 0;
e2cbcd91 3281 if (ABI_64_P (output_bfd))
5c98a14e 3282 {
e2cbcd91
L		 3283 if (contents[roff + 5] == 0xb8)
3284 {
3285 memcpy (contents + roff - 3,
3286 "\x64\x48\x8b\x04\x25\0\0\0\0\x48\x8d\x80"
3287 "\0\0\0\0\x66\x0f\x1f\x44\0", 22);
3288 largepic = 1;
3289 }
3290 else
3291 memcpy (contents + roff - 4,
3292 "\x64\x48\x8b\x04\x25\0\0\0\0\x48\x8d\x80\0\0\0",
3293 16);
5c98a14e 3294 }
52bc799a
L		 3295 else
3296 memcpy (contents + roff - 3,
3297 "\x64\x8b\x04\x25\0\0\0\0\x48\x8d\x80\0\0\0",
3298 15);
eb4ff4d6 3299 bfd_put_32 (output_bfd,
351f65ca 3300 elf_x86_64_tpoff (info, relocation),
5c98a14e 3301 contents + roff + 8 + largepic);
e2cbcd91
L		 3302 /* Skip R_X86_64_PC32, R_X86_64_PLT32,
3303 R_X86_64_GOTPCRELX and R_X86_64_PLTOFF64. */
bffbf940 3304 rel++;
60f2e42e 3305 wrel++;
bffbf940
JJ		 3306 continue;
3307 }
419414ea 3308 else if (r_type == R_X86_64_GOTPC32_TLSDESC)
67a4f2b7
AO		 3309 {
3310 /* GDesc -> LE transition.
3311 It's originally something like:
3312 leaq x@tlsdesc(%rip), %rax
3313
3314 Change it to:
c9736ba0 3315 movl $x@tpoff, %rax. */
67a4f2b7 3316
c9736ba0 3317 unsigned int val, type;
67a4f2b7 3318
67a4f2b7 3319 type = bfd_get_8 (input_bfd, contents + roff - 3);
67a4f2b7 3320 val = bfd_get_8 (input_bfd, contents + roff - 1);
67a4f2b7
AO		 3321 bfd_put_8 (output_bfd, 0x48 | ((type >> 2) & 1),
3322 contents + roff - 3);
3323 bfd_put_8 (output_bfd, 0xc7, contents + roff - 2);
3324 bfd_put_8 (output_bfd, 0xc0 | ((val >> 3) & 7),
3325 contents + roff - 1);
eb4ff4d6 3326 bfd_put_32 (output_bfd,
351f65ca 3327 elf_x86_64_tpoff (info, relocation),
67a4f2b7
AO		 3328 contents + roff);
3329 continue;
3330 }
419414ea 3331 else if (r_type == R_X86_64_TLSDESC_CALL)
67a4f2b7
AO		 3332 {
3333 /* GDesc -> LE transition.
3334 It's originally:
3335 call *(%rax)
3336 Turn it into:
142411ca 3337 xchg %ax,%ax. */
10efb593 3338 bfd_put_8 (output_bfd, 0x66, contents + roff);
67a4f2b7
AO		 3339 bfd_put_8 (output_bfd, 0x90, contents + roff + 1);
3340 continue;
3341 }
419414ea 3342 else if (r_type == R_X86_64_GOTTPOFF)
bffbf940 3343 {
bffbf940 3344 /* IE->LE transition:
cf61b747 3345 For 64bit, originally it can be one of:
bffbf940
JJ		 3346 movq foo@gottpoff(%rip), %reg
3347 addq foo@gottpoff(%rip), %reg
3348 We change it into:
3349 movq $foo, %reg
3350 leaq foo(%reg), %reg
cf61b747
L		 3351 addq $foo, %reg.
3352 For 32bit, originally it can be one of:
3353 movq foo@gottpoff(%rip), %reg
3354 addl foo@gottpoff(%rip), %reg
3355 We change it into:
3356 movq $foo, %reg
3357 leal foo(%reg), %reg
3358 addl $foo, %reg. */
142411ca
L		 3359
3360 unsigned int val, type, reg;
3361
cf61b747
L		 3362 if (roff >= 3)
3363 val = bfd_get_8 (input_bfd, contents + roff - 3);
3364 else
3365 val = 0;
142411ca
L		 3366 type = bfd_get_8 (input_bfd, contents + roff - 2);
3367 reg = bfd_get_8 (input_bfd, contents + roff - 1);
bffbf940 3368 reg >>= 3;
bffbf940
JJ		 3369 if (type == 0x8b)
3370 {
3371 /* movq */
3372 if (val == 0x4c)
3373 bfd_put_8 (output_bfd, 0x49,
142411ca 3374 contents + roff - 3);
4a4c5f25
L		 3375 else if (!ABI_64_P (output_bfd) && val == 0x44)
3376 bfd_put_8 (output_bfd, 0x41,
3377 contents + roff - 3);
bffbf940 3378 bfd_put_8 (output_bfd, 0xc7,
142411ca 3379 contents + roff - 2);
bffbf940 3380 bfd_put_8 (output_bfd, 0xc0 | reg,
142411ca 3381 contents + roff - 1);
bffbf940
JJ		 3382 }
3383 else if (reg == 4)
3384 {
cf61b747
L		 3385 /* addq/addl -> addq/addl - addressing with %rsp/%r12
3386 is special */
bffbf940
JJ		 3387 if (val == 0x4c)
3388 bfd_put_8 (output_bfd, 0x49,
142411ca 3389 contents + roff - 3);
4a4c5f25
L		 3390 else if (!ABI_64_P (output_bfd) && val == 0x44)
3391 bfd_put_8 (output_bfd, 0x41,
3392 contents + roff - 3);
bffbf940 3393 bfd_put_8 (output_bfd, 0x81,
142411ca 3394 contents + roff - 2);
bffbf940 3395 bfd_put_8 (output_bfd, 0xc0 | reg,
142411ca 3396 contents + roff - 1);
bffbf940
JJ		 3397 }
3398 else
3399 {
cf61b747 3400 /* addq/addl -> leaq/leal */
bffbf940
JJ		 3401 if (val == 0x4c)
3402 bfd_put_8 (output_bfd, 0x4d,
142411ca 3403 contents + roff - 3);
4a4c5f25
L		 3404 else if (!ABI_64_P (output_bfd) && val == 0x44)
3405 bfd_put_8 (output_bfd, 0x45,
3406 contents + roff - 3);
bffbf940 3407 bfd_put_8 (output_bfd, 0x8d,
142411ca 3408 contents + roff - 2);
bffbf940 3409 bfd_put_8 (output_bfd, 0x80 | reg | (reg << 3),
142411ca 3410 contents + roff - 1);
bffbf940 3411 }
eb4ff4d6 3412 bfd_put_32 (output_bfd,
351f65ca 3413 elf_x86_64_tpoff (info, relocation),
142411ca 3414 contents + roff);
bffbf940
JJ		 3415 continue;
3416 }
142411ca
L		 3417 else
3418 BFD_ASSERT (FALSE);
bffbf940
JJ		 3419 }
3420
6de2ae4a 3421 if (htab->elf.sgot == NULL)
bffbf940
JJ		 3422 abort ();
3423
3424 if (h != NULL)
67a4f2b7
AO		 3425 {
3426 off = h->got.offset;
0afcef53 3427 offplt = elf_x86_hash_entry (h)->tlsdesc_got;
67a4f2b7 3428 }
bffbf940
JJ		 3429 else
3430 {
3431 if (local_got_offsets == NULL)
3432 abort ();
3433
3434 off = local_got_offsets[r_symndx];
67a4f2b7 3435 offplt = local_tlsdesc_gotents[r_symndx];
bffbf940
JJ		 3436 }
3437
3438 if ((off & 1) != 0)
3439 off &= ~1;
26e41594 3440 else
bffbf940
JJ		 3441 {
3442 Elf_Internal_Rela outrel;
bffbf940 3443 int dr_type, indx;
67a4f2b7 3444 asection *sreloc;
bffbf940 3445
6de2ae4a 3446 if (htab->elf.srelgot == NULL)
bffbf940
JJ		 3447 abort ();
3448
67a4f2b7
AO		 3449 indx = h && h->dynindx != -1 ? h->dynindx : 0;
3450
3451 if (GOT_TLS_GDESC_P (tls_type))
3452 {
351f65ca 3453 outrel.r_info = htab->r_info (indx, R_X86_64_TLSDESC);
67a4f2b7 3454 BFD_ASSERT (htab->sgotplt_jump_table_size + offplt
6de2ae4a
L		 3455 + 2 * GOT_ENTRY_SIZE <= htab->elf.sgotplt->size);
3456 outrel.r_offset = (htab->elf.sgotplt->output_section->vma
3457 + htab->elf.sgotplt->output_offset
67a4f2b7
AO		 3458 + offplt
3459 + htab->sgotplt_jump_table_size);
6de2ae4a 3460 sreloc = htab->elf.srelplt;
67a4f2b7 3461 if (indx == 0)
0afcef53 3462 outrel.r_addend = relocation - _bfd_x86_elf_dtpoff_base (info);
67a4f2b7
AO		 3463 else
3464 outrel.r_addend = 0;
351f65ca 3465 elf_append_rela (output_bfd, sreloc, &outrel);
67a4f2b7
AO		 3466 }
3467
6de2ae4a 3468 sreloc = htab->elf.srelgot;
67a4f2b7 3469
6de2ae4a
L		 3470 outrel.r_offset = (htab->elf.sgot->output_section->vma
3471 + htab->elf.sgot->output_offset + off);
bffbf940 3472
67a4f2b7 3473 if (GOT_TLS_GD_P (tls_type))
bffbf940 3474 dr_type = R_X86_64_DTPMOD64;
67a4f2b7
AO		 3475 else if (GOT_TLS_GDESC_P (tls_type))
3476 goto dr_done;
bffbf940
JJ		 3477 else
3478 dr_type = R_X86_64_TPOFF64;
3479
6de2ae4a 3480 bfd_put_64 (output_bfd, 0, htab->elf.sgot->contents + off);
bffbf940 3481 outrel.r_addend = 0;
67a4f2b7
AO		 3482 if ((dr_type == R_X86_64_TPOFF64
3483 || dr_type == R_X86_64_TLSDESC) && indx == 0)
0afcef53 3484 outrel.r_addend = relocation - _bfd_x86_elf_dtpoff_base (info);
351f65ca 3485 outrel.r_info = htab->r_info (indx, dr_type);
bffbf940 3486
351f65ca 3487 elf_append_rela (output_bfd, sreloc, &outrel);
bffbf940 3488
67a4f2b7 3489 if (GOT_TLS_GD_P (tls_type))
bffbf940
JJ		 3490 {
3491 if (indx == 0)
3492 {
d40d037c 3493 BFD_ASSERT (! unresolved_reloc);
bffbf940 3494 bfd_put_64 (output_bfd,
0afcef53 3495 relocation - _bfd_x86_elf_dtpoff_base (info),
6de2ae4a 3496 htab->elf.sgot->contents + off + GOT_ENTRY_SIZE);
bffbf940
JJ		 3497 }
3498 else
3499 {
3500 bfd_put_64 (output_bfd, 0,
6de2ae4a 3501 htab->elf.sgot->contents + off + GOT_ENTRY_SIZE);
351f65ca 3502 outrel.r_info = htab->r_info (indx,
bffbf940
JJ		 3503 R_X86_64_DTPOFF64);
3504 outrel.r_offset += GOT_ENTRY_SIZE;
351f65ca 3505 elf_append_rela (output_bfd, sreloc,
464d3bd4 3506 &outrel);
bffbf940
JJ		 3507 }
3508 }
3509
67a4f2b7 3510 dr_done:
bffbf940
JJ		 3511 if (h != NULL)
3512 h->got.offset |= 1;
3513 else
3514 local_got_offsets[r_symndx] |= 1;
3515 }
3516
67a4f2b7
AO		 3517 if (off >= (bfd_vma) -2
3518 && ! GOT_TLS_GDESC_P (tls_type))
bffbf940 3519 abort ();
419414ea 3520 if (r_type_tls == r_type)
bffbf940 3521 {
67a4f2b7
AO		 3522 if (r_type == R_X86_64_GOTPC32_TLSDESC
3523 || r_type == R_X86_64_TLSDESC_CALL)
6de2ae4a
L		 3524 relocation = htab->elf.sgotplt->output_section->vma
3525 + htab->elf.sgotplt->output_offset
67a4f2b7
AO		 3526 + offplt + htab->sgotplt_jump_table_size;
3527 else
6de2ae4a
L		 3528 relocation = htab->elf.sgot->output_section->vma
3529 + htab->elf.sgot->output_offset + off;
b34976b6 3530 unresolved_reloc = FALSE;
bffbf940 3531 }
142411ca 3532 else
67a4f2b7 3533 {
142411ca 3534 bfd_vma roff = rel->r_offset;
67a4f2b7 3535
419414ea 3536 if (r_type == R_X86_64_TLSGD)
142411ca 3537 {
52bc799a 3538 /* GD->IE transition. For 64bit, change
e2cbcd91
L		 3539 .byte 0x66; leaq foo@tlsgd(%rip), %rdi
3540 .word 0x6666; rex64; call __tls_get_addr@PLT
3541 or
3542 .byte 0x66; leaq foo@tlsgd(%rip), %rdi
3543 .byte 0x66; rex64
3544 call *__tls_get_addr@GOTPCREL(%rip
3545 which may be converted to
3546 addr32 call __tls_get_addr
52bc799a 3547 into:
e2cbcd91
L		 3548 movq %fs:0, %rax
3549 addq foo@gottpoff(%rip), %rax
52bc799a 3550 For 32bit, change
e2cbcd91
L		 3551 leaq foo@tlsgd(%rip), %rdi
3552 .word 0x6666; rex64; call __tls_get_addr@PLT
3553 or
3554 leaq foo@tlsgd(%rip), %rdi
3555 .byte 0x66; rex64;
3556 call *__tls_get_addr@GOTPCREL(%rip)
3557 which may be converted to
3558 addr32 call __tls_get_addr
52bc799a 3559 into:
e2cbcd91
L		 3560 movl %fs:0, %eax
3561 addq foo@gottpoff(%rip), %rax
5c98a14e 3562 For largepic, change:
e2cbcd91
L		 3563 leaq foo@tlsgd(%rip), %rdi
3564 movabsq $__tls_get_addr@pltoff, %rax
3565 addq %r15, %rax
3566 call *%rax
5c98a14e 3567 into:
e2cbcd91
L		 3568 movq %fs:0, %rax
3569 addq foo@gottpoff(%rax), %rax
3570 nopw 0x0(%rax,%rax,1) */
5c98a14e 3571 int largepic = 0;
e2cbcd91 3572 if (ABI_64_P (output_bfd))
5c98a14e 3573 {
e2cbcd91
L		 3574 if (contents[roff + 5] == 0xb8)
3575 {
3576 memcpy (contents + roff - 3,
3577 "\x64\x48\x8b\x04\x25\0\0\0\0\x48\x03\x05"
3578 "\0\0\0\0\x66\x0f\x1f\x44\0", 22);
3579 largepic = 1;
3580 }
3581 else
3582 memcpy (contents + roff - 4,
3583 "\x64\x48\x8b\x04\x25\0\0\0\0\x48\x03\x05\0\0\0",
3584 16);
5c98a14e 3585 }
52bc799a
L		 3586 else
3587 memcpy (contents + roff - 3,
3588 "\x64\x8b\x04\x25\0\0\0\0\x48\x03\x05\0\0\0",
3589 15);
142411ca 3590
6de2ae4a
L		 3591 relocation = (htab->elf.sgot->output_section->vma
3592 + htab->elf.sgot->output_offset + off
142411ca 3593 - roff
5c98a14e 3594 - largepic
142411ca
L		 3595 - input_section->output_section->vma
3596 - input_section->output_offset
3597 - 12);
3598 bfd_put_32 (output_bfd, relocation,
5c98a14e
JJ		 3599 contents + roff + 8 + largepic);
3600 /* Skip R_X86_64_PLT32/R_X86_64_PLTOFF64. */
142411ca 3601 rel++;
60f2e42e 3602 wrel++;
142411ca
L		 3603 continue;
3604 }
419414ea 3605 else if (r_type == R_X86_64_GOTPC32_TLSDESC)
142411ca
L		 3606 {
3607 /* GDesc -> IE transition.
3608 It's originally something like:
3609 leaq x@tlsdesc(%rip), %rax
67a4f2b7 3610
142411ca 3611 Change it to:
c9736ba0 3612 movq x@gottpoff(%rip), %rax # before xchg %ax,%ax. */
67a4f2b7 3613
142411ca
L		 3614 /* Now modify the instruction as appropriate. To
3615 turn a leaq into a movq in the form we use it, it
3616 suffices to change the second byte from 0x8d to
3617 0x8b. */
3618 bfd_put_8 (output_bfd, 0x8b, contents + roff - 2);
3619
3620 bfd_put_32 (output_bfd,
6de2ae4a
L		 3621 htab->elf.sgot->output_section->vma
3622 + htab->elf.sgot->output_offset + off
142411ca
L		 3623 - rel->r_offset
3624 - input_section->output_section->vma
3625 - input_section->output_offset
3626 - 4,
3627 contents + roff);
3628 continue;
3629 }
419414ea 3630 else if (r_type == R_X86_64_TLSDESC_CALL)
142411ca
L		 3631 {
3632 /* GDesc -> IE transition.
3633 It's originally:
3634 call *(%rax)
3635
3636 Change it to:
c9736ba0 3637 xchg %ax, %ax. */
142411ca 3638
142411ca
L		 3639 bfd_put_8 (output_bfd, 0x66, contents + roff);
3640 bfd_put_8 (output_bfd, 0x90, contents + roff + 1);
3641 continue;
3642 }
3643 else
3644 BFD_ASSERT (FALSE);
67a4f2b7 3645 }
bffbf940
JJ		 3646 break;
3647
3648 case R_X86_64_TLSLD:
351f65ca
L		 3649 if (! elf_x86_64_tls_transition (info, input_bfd,
3650 input_section, contents,
3651 symtab_hdr, sym_hashes,
bedfd056
L		 3652 &r_type, GOT_UNKNOWN, rel,
3653 relend, h, r_symndx, TRUE))
142411ca 3654 return FALSE;
a3fadc9a 3655
142411ca
L		 3656 if (r_type != R_X86_64_TLSLD)
3657 {
bffbf940 3658 /* LD->LE transition:
e2cbcd91
L		 3659 leaq foo@tlsld(%rip), %rdi
3660 call __tls_get_addr@PLT
3661 For 64bit, we change it into:
3662 .word 0x6666; .byte 0x66; movq %fs:0, %rax
3663 For 32bit, we change it into:
3664 nopl 0x0(%rax); movl %fs:0, %eax
3665 Or
3666 leaq foo@tlsld(%rip), %rdi;
3667 call *__tls_get_addr@GOTPCREL(%rip)
3668 which may be converted to
3669 addr32 call __tls_get_addr
52bc799a 3670 For 64bit, we change it into:
e2cbcd91 3671 .word 0x6666; .word 0x6666; movq %fs:0, %rax
52bc799a 3672 For 32bit, we change it into:
e2cbcd91 3673 nopw 0x0(%rax); movl %fs:0, %eax
5c98a14e 3674 For largepic, change:
e2cbcd91
L		 3675 leaq foo@tlsgd(%rip), %rdi
3676 movabsq $__tls_get_addr@pltoff, %rax
3677 addq %rbx, %rax
3678 call *%rax
3679 into
3680 data16 data16 data16 nopw %cs:0x0(%rax,%rax,1)
3681 movq %fs:0, %eax */
142411ca
L		 3682
3683 BFD_ASSERT (r_type == R_X86_64_TPOFF32);
e2cbcd91
L		 3684 if (ABI_64_P (output_bfd))
3685 {
3686 if (contents[rel->r_offset + 5] == 0xb8)
3687 memcpy (contents + rel->r_offset - 3,
3688 "\x66\x66\x66\x66\x2e\x0f\x1f\x84\0\0\0\0\0"
3689 "\x64\x48\x8b\x04\x25\0\0\0", 22);
3690 else if (contents[rel->r_offset + 4] == 0xff
3691 || contents[rel->r_offset + 4] == 0x67)
3692 memcpy (contents + rel->r_offset - 3,
3693 "\x66\x66\x66\x66\x64\x48\x8b\x04\x25\0\0\0",
3694 13);
3695 else
3696 memcpy (contents + rel->r_offset - 3,
3697 "\x66\x66\x66\x64\x48\x8b\x04\x25\0\0\0", 12);
3698 }
52bc799a 3699 else
e2cbcd91
L		 3700 {
3701 if (contents[rel->r_offset + 4] == 0xff)
3702 memcpy (contents + rel->r_offset - 3,
3703 "\x66\x0f\x1f\x40\x00\x64\x8b\x04\x25\0\0\0",
3704 13);
3705 else
3706 memcpy (contents + rel->r_offset - 3,
3707 "\x0f\x1f\x40\x00\x64\x8b\x04\x25\0\0\0", 12);
3708 }
3709 /* Skip R_X86_64_PC32, R_X86_64_PLT32, R_X86_64_GOTPCRELX
3710 and R_X86_64_PLTOFF64. */
bffbf940 3711 rel++;
60f2e42e 3712 wrel++;
bffbf940
JJ		 3713 continue;
3714 }
3715
6de2ae4a 3716 if (htab->elf.sgot == NULL)
bffbf940
JJ		 3717 abort ();
3718
0afcef53 3719 off = htab->tls_ld_or_ldm_got.offset;
bffbf940
JJ		 3720 if (off & 1)
3721 off &= ~1;
3722 else
3723 {
3724 Elf_Internal_Rela outrel;
bffbf940 3725
6de2ae4a 3726 if (htab->elf.srelgot == NULL)
bffbf940
JJ		 3727 abort ();
3728
6de2ae4a
L		 3729 outrel.r_offset = (htab->elf.sgot->output_section->vma
3730 + htab->elf.sgot->output_offset + off);
bffbf940
JJ		 3731
3732 bfd_put_64 (output_bfd, 0,
6de2ae4a 3733 htab->elf.sgot->contents + off);
bffbf940 3734 bfd_put_64 (output_bfd, 0,
6de2ae4a 3735 htab->elf.sgot->contents + off + GOT_ENTRY_SIZE);
351f65ca 3736 outrel.r_info = htab->r_info (0, R_X86_64_DTPMOD64);
bffbf940 3737 outrel.r_addend = 0;
351f65ca 3738 elf_append_rela (output_bfd, htab->elf.srelgot,
464d3bd4 3739 &outrel);
0afcef53 3740 htab->tls_ld_or_ldm_got.offset |= 1;
bffbf940 3741 }
6de2ae4a
L		 3742 relocation = htab->elf.sgot->output_section->vma
3743 + htab->elf.sgot->output_offset + off;
b34976b6 3744 unresolved_reloc = FALSE;
bffbf940
JJ		 3745 break;
3746
3747 case R_X86_64_DTPOFF32:
0e1862bb
L		 3748 if (!bfd_link_executable (info)
3749 || (input_section->flags & SEC_CODE) == 0)
0afcef53 3750 relocation -= _bfd_x86_elf_dtpoff_base (info);
bffbf940 3751 else
351f65ca 3752 relocation = elf_x86_64_tpoff (info, relocation);
bffbf940
JJ		 3753 break;
3754
3755 case R_X86_64_TPOFF32:
6769d501 3756 case R_X86_64_TPOFF64:
0e1862bb 3757 BFD_ASSERT (bfd_link_executable (info));
351f65ca 3758 relocation = elf_x86_64_tpoff (info, relocation);
bffbf940
JJ		 3759 break;
3760
a69ed7f7
L		 3761 case R_X86_64_DTPOFF64:
3762 BFD_ASSERT ((input_section->flags & SEC_CODE) == 0);
0afcef53 3763 relocation -= _bfd_x86_elf_dtpoff_base (info);
a69ed7f7
L		 3764 break;
3765
70256ad8
AJ		 3766 default:
3767 break;
3768 }
8d88c4ca 3769
239e1f3a
AM		 3770 /* Dynamic relocs are not propagated for SEC_DEBUGGING sections
3771 because such sections are not SEC_ALLOC and thus ld.so will
3772 not process them. */
c434dee6 3773 if (unresolved_reloc
239e1f3a 3774 && !((input_section->flags & SEC_DEBUGGING) != 0
1d5316ab
AM		 3775 && h->def_dynamic)
3776 && _bfd_elf_section_offset (output_bfd, info, input_section,
3777 rel->r_offset) != (bfd_vma) -1)
a040981f 3778 {
7073b5b9
L		 3779 switch (r_type)
3780 {
3781 case R_X86_64_32S:
a5b4ee94
L		 3782 sec = h->root.u.def.section;
3783 if ((info->nocopyreloc
3784 || (eh->def_protected
3785 && elf_has_no_copy_on_protected (h->root.u.def.section->owner)))
7073b5b9
L		 3786 && !(h->root.u.def.section->flags & SEC_CODE))
3787 return elf_x86_64_need_pic (info, input_bfd, input_section,
3788 h, NULL, NULL, howto);
3789 /* Fall through. */
3790
3791 default:
3792 _bfd_error_handler
3793 /* xgettext:c-format */
3794 (_("%B(%A+%#Lx): unresolvable %s relocation against symbol `%s'"),
3795 input_bfd,
3796 input_section,
3797 rel->r_offset,
3798 howto->name,
3799 h->root.root.string);
3800 return FALSE;
3801 }
a040981f 3802 }
c434dee6 3803
cbe950e9 3804do_relocation:
8d88c4ca 3805 r = _bfd_final_link_relocate (howto, input_bfd, input_section,
c434dee6
AJ		 3806 contents, rel->r_offset,
3807 relocation, rel->r_addend);
8d88c4ca 3808
62d78908 3809check_relocation_error:
8d88c4ca 3810 if (r != bfd_reloc_ok)
8da6118f 3811 {
c434dee6
AJ		 3812 const char *name;
3813
3814 if (h != NULL)
3815 name = h->root.root.string;
3816 else
8da6118f 3817 {
c434dee6
AJ		 3818 name = bfd_elf_string_from_elf_section (input_bfd,
3819 symtab_hdr->sh_link,
3820 sym->st_name);
3821 if (name == NULL)
b34976b6 3822 return FALSE;
c434dee6
AJ		 3823 if (*name == '\0')
3824 name = bfd_section_name (input_bfd, sec);
3825 }
3826
3827 if (r == bfd_reloc_overflow)
8b43e456 3828 {
78984959 3829 if (converted_reloc)
8b43e456
L		 3830 {
3831 info->callbacks->einfo
3832 (_("%F%P: failed to convert GOTPCREL relocation; relink with --no-relax\n"));
3833 return FALSE;
3834 }
3835 (*info->callbacks->reloc_overflow)
3836 (info, (h ? &h->root : NULL), name, howto->name,
3837 (bfd_vma) 0, input_bfd, input_section, rel->r_offset);
3838 }
c434dee6
AJ		 3839 else
3840 {
4eca0228 3841 _bfd_error_handler
695344c0 3842 /* xgettext:c-format */
d42c267e 3843 (_("%B(%A+%#Lx): reloc against `%s': error %d"),
d003868e 3844 input_bfd, input_section,
d42c267e 3845 rel->r_offset, name, (int) r);
b34976b6 3846 return FALSE;
8da6118f
KH		 3847 }
3848 }
60f2e42e
L		 3849
3850 if (wrel != rel)
3851 *wrel = *rel;
3852 }
3853
3854 if (wrel != rel)
3855 {
3856 Elf_Internal_Shdr *rel_hdr;
3857 size_t deleted = rel - wrel;
3858
3859 rel_hdr = _bfd_elf_single_rel_hdr (input_section->output_section);
3860 rel_hdr->sh_size -= rel_hdr->sh_entsize * deleted;
3861 if (rel_hdr->sh_size == 0)
3862 {
3863 /* It is too late to remove an empty reloc section. Leave
3864 one NONE reloc.
3865 ??? What is wrong with an empty section??? */
3866 rel_hdr->sh_size = rel_hdr->sh_entsize;
3867 deleted -= 1;
3868 }
3869 rel_hdr = _bfd_elf_single_rel_hdr (input_section);
3870 rel_hdr->sh_size -= rel_hdr->sh_entsize * deleted;
3871 input_section->reloc_count -= deleted;
8d88c4ca 3872 }
70256ad8 3873
b34976b6 3874 return TRUE;
70256ad8
AJ		 3875}
3876
3877/* Finish up dynamic symbol handling. We set the contents of various
3878 dynamic sections here. */
3879
b34976b6 3880static bfd_boolean
351f65ca
L		 3881elf_x86_64_finish_dynamic_symbol (bfd *output_bfd,
3882 struct bfd_link_info *info,
3883 struct elf_link_hash_entry *h,
aec6b87e 3884 Elf_Internal_Sym *sym)
70256ad8 3885{
0afcef53 3886 struct elf_x86_link_hash_table *htab;
f2c29a16 3887 bfd_boolean use_plt_second;
0afcef53 3888 struct elf_x86_link_hash_entry *eh;
aec6b87e 3889 bfd_boolean local_undefweak;
70256ad8 3890
0afcef53 3891 htab = elf_x86_hash_table (info, X86_64_ELF_DATA);
4dfe6ac6
NC		 3892 if (htab == NULL)
3893 return FALSE;
70256ad8 3894
f2c29a16
L		 3895 /* Use the second PLT section only if there is .plt section. */
3896 use_plt_second = htab->elf.splt != NULL && htab->plt_second != NULL;
0ff2b86e 3897
0afcef53 3898 eh = (struct elf_x86_link_hash_entry *) h;
9e9821dd
L		 3899 if (eh->no_finish_dynamic_symbol)
3900 abort ();
dd7e64d4 3901
aec6b87e
L		 3902 /* We keep PLT/GOT entries without dynamic PLT/GOT relocations for
3903 resolved undefined weak symbols in executable so that their
3904 references have value 0 at run-time. */
c5bce5c6 3905 local_undefweak = UNDEFINED_WEAK_RESOLVED_TO_ZERO (info, eh);
aec6b87e 3906
70256ad8
AJ		 3907 if (h->plt.offset != (bfd_vma) -1)
3908 {
70256ad8 3909 bfd_vma plt_index;
38b12349 3910 bfd_vma got_offset, plt_offset;
70256ad8 3911 Elf_Internal_Rela rela;
947216bf 3912 bfd_byte *loc;
0ff2b86e 3913 asection *plt, *gotplt, *relplt, *resolved_plt;
351f65ca 3914 const struct elf_backend_data *bed;
5974eba6 3915 bfd_vma plt_got_pcrel_offset;
cbe950e9
L		 3916
3917 /* When building a static executable, use .iplt, .igot.plt and
3918 .rela.iplt sections for STT_GNU_IFUNC symbols. */
6de2ae4a 3919 if (htab->elf.splt != NULL)
cbe950e9 3920 {
6de2ae4a
L		 3921 plt = htab->elf.splt;
3922 gotplt = htab->elf.sgotplt;
3923 relplt = htab->elf.srelplt;
cbe950e9
L		 3924 }
3925 else
3926 {
6de2ae4a
L		 3927 plt = htab->elf.iplt;
3928 gotplt = htab->elf.igotplt;
3929 relplt = htab->elf.irelplt;
cbe950e9 3930 }
70256ad8 3931
f3180fa9 3932 VERIFY_PLT_ENTRY (info, h, plt, gotplt, relplt, local_undefweak)
70256ad8
AJ		 3933
3934 /* Get the index in the procedure linkage table which
3935 corresponds to this symbol. This is the index of this symbol
3936 in all the symbols for which we are making plt entries. The
cbe950e9 3937 first entry in the procedure linkage table is reserved.
6bbec505 3938
cbe950e9 3939 Get the offset into the .got table of the entry that
407443a3 3940 corresponds to this function. Each .got entry is GOT_ENTRY_SIZE
cbe950e9
L		 3941 bytes. The first three are reserved for the dynamic linker.
3942
3943 For static executables, we don't reserve anything. */
3944
6de2ae4a 3945 if (plt == htab->elf.splt)
cbe950e9 3946 {
765e526c
L		 3947 got_offset = (h->plt.offset / htab->plt.plt_entry_size
3948 - htab->plt.has_plt0);
e1f98742 3949 got_offset = (got_offset + 3) * GOT_ENTRY_SIZE;
cbe950e9
L		 3950 }
3951 else
3952 {
765e526c 3953 got_offset = h->plt.offset / htab->plt.plt_entry_size;
e1f98742 3954 got_offset = got_offset * GOT_ENTRY_SIZE;
cbe950e9 3955 }
70256ad8 3956
38b12349 3957 /* Fill in the entry in the procedure linkage table. */
765e526c
L		 3958 memcpy (plt->contents + h->plt.offset, htab->plt.plt_entry,
3959 htab->plt.plt_entry_size);
f2c29a16 3960 if (use_plt_second)
0ff2b86e 3961 {
f2c29a16 3962 memcpy (htab->plt_second->contents + eh->plt_second.offset,
765e526c
L		 3963 htab->non_lazy_plt->plt_entry,
3964 htab->non_lazy_plt->plt_entry_size);
0ff2b86e 3965
f2c29a16
L		 3966 resolved_plt = htab->plt_second;
3967 plt_offset = eh->plt_second.offset;
0ff2b86e
L		 3968 }
3969 else
3970 {
0ff2b86e
L		 3971 resolved_plt = plt;
3972 plt_offset = h->plt.offset;
3973 }
eed180f8
RM		 3974
3975 /* Insert the relocation positions of the plt section. */
3976
3977 /* Put offset the PC-relative instruction referring to the GOT entry,
3978 subtracting the size of that instruction. */
ab7fede8
L		 3979 plt_got_pcrel_offset = (gotplt->output_section->vma
3980 + gotplt->output_offset
3981 + got_offset
3982 - resolved_plt->output_section->vma
3983 - resolved_plt->output_offset
3984 - plt_offset
765e526c 3985 - htab->plt.plt_got_insn_size);
ab7fede8
L		 3986
3987 /* Check PC-relative offset overflow in PLT entry. */
5974eba6 3988 if ((plt_got_pcrel_offset + 0x80000000) > 0xffffffff)
695344c0 3989 /* xgettext:c-format */
ab7fede8
L		 3990 info->callbacks->einfo (_("%F%B: PC-relative offset overflow in PLT entry for `%s'\n"),
3991 output_bfd, h->root.root.string);
3992
3993 bfd_put_32 (output_bfd, plt_got_pcrel_offset,
38b12349 3994 (resolved_plt->contents + plt_offset
765e526c 3995 + htab->plt.plt_got_offset));
cbe950e9 3996
653165cc 3997 /* Fill in the entry in the global offset table, initially this
aec6b87e
L		 3998 points to the second part of the PLT entry. Leave the entry
3999 as zero for undefined weak symbol in PIE. No PLT relocation
4000 against undefined weak symbol in PIE. */
4001 if (!local_undefweak)
cbe950e9 4002 {
765e526c 4003 if (htab->plt.has_plt0)
38b12349
L		 4004 bfd_put_64 (output_bfd, (plt->output_section->vma
4005 + plt->output_offset
4006 + h->plt.offset
765e526c 4007 + htab->lazy_plt->plt_lazy_offset),
38b12349 4008 gotplt->contents + got_offset);
aec6b87e
L		 4009
4010 /* Fill in the entry in the .rela.plt section. */
4011 rela.r_offset = (gotplt->output_section->vma
4012 + gotplt->output_offset
4013 + got_offset);
cf1070f1 4014 if (PLT_LOCAL_IFUNC_P (info, h))
aec6b87e 4015 {
6322e5c5
L		 4016 info->callbacks->minfo (_("Local IFUNC function `%s' in %B\n"),
4017 h->root.root.string,
4018 h->root.u.def.section->owner);
4019
aec6b87e
L		 4020 /* If an STT_GNU_IFUNC symbol is locally defined, generate
4021 R_X86_64_IRELATIVE instead of R_X86_64_JUMP_SLOT. */
4022 rela.r_info = htab->r_info (0, R_X86_64_IRELATIVE);
4023 rela.r_addend = (h->root.u.def.value
4024 + h->root.u.def.section->output_section->vma
4025 + h->root.u.def.section->output_offset);
4026 /* R_X86_64_IRELATIVE comes last. */
4027 plt_index = htab->next_irelative_index--;
4028 }
4029 else
4030 {
4031 rela.r_info = htab->r_info (h->dynindx, R_X86_64_JUMP_SLOT);
4032 rela.r_addend = 0;
4033 plt_index = htab->next_jump_slot_index++;
4034 }
e1f98742 4035
38b12349
L		 4036 /* Don't fill the second and third slots in PLT entry for
4037 static executables nor without PLT0. */
765e526c 4038 if (plt == htab->elf.splt && htab->plt.has_plt0)
aec6b87e 4039 {
38b12349 4040 bfd_vma plt0_offset
765e526c 4041 = h->plt.offset + htab->lazy_plt->plt_plt_insn_end;
aec6b87e
L		 4042
4043 /* Put relocation index. */
4044 bfd_put_32 (output_bfd, plt_index,
4045 (plt->contents + h->plt.offset
765e526c 4046 + htab->lazy_plt->plt_reloc_offset));
aec6b87e
L		 4047
4048 /* Put offset for jmp .PLT0 and check for overflow. We don't
4049 check relocation index for overflow since branch displacement
4050 will overflow first. */
4051 if (plt0_offset > 0x80000000)
695344c0 4052 /* xgettext:c-format */
aec6b87e
L		 4053 info->callbacks->einfo (_("%F%B: branch displacement overflow in PLT entry for `%s'\n"),
4054 output_bfd, h->root.root.string);
4055 bfd_put_32 (output_bfd, - plt0_offset,
38b12349 4056 (plt->contents + h->plt.offset
765e526c 4057 + htab->lazy_plt->plt_plt_offset));
aec6b87e 4058 }
351f65ca 4059
aec6b87e
L		 4060 bed = get_elf_backend_data (output_bfd);
4061 loc = relplt->contents + plt_index * bed->s->sizeof_rela;
4062 bed->s->swap_reloca_out (output_bfd, &rela, loc);
4063 }
dd7e64d4
L		 4064 }
4065 else if (eh->plt_got.offset != (bfd_vma) -1)
4066 {
38b12349 4067 bfd_vma got_offset, plt_offset;
dd7e64d4
L		 4068 asection *plt, *got;
4069 bfd_boolean got_after_plt;
4070 int32_t got_pcrel_offset;
dd7e64d4
L		 4071
4072 /* Set the entry in the GOT procedure linkage table. */
4073 plt = htab->plt_got;
4074 got = htab->elf.sgot;
4075 got_offset = h->got.offset;
4076
4077 if (got_offset == (bfd_vma) -1
e492d2f8 4078 || (h->type == STT_GNU_IFUNC && h->def_regular)
dd7e64d4
L		 4079 || plt == NULL
4080 || got == NULL)
4081 abort ();
70256ad8 4082
38b12349 4083 /* Use the non-lazy PLT entry template for the GOT PLT since they
dd7e64d4 4084 are the identical. */
dd7e64d4
L		 4085 /* Fill in the entry in the GOT procedure linkage table. */
4086 plt_offset = eh->plt_got.offset;
4087 memcpy (plt->contents + plt_offset,
765e526c
L		 4088 htab->non_lazy_plt->plt_entry,
4089 htab->non_lazy_plt->plt_entry_size);
dd7e64d4
L		 4090
4091 /* Put offset the PC-relative instruction referring to the GOT
4092 entry, subtracting the size of that instruction. */
4093 got_pcrel_offset = (got->output_section->vma
4094 + got->output_offset
4095 + got_offset
4096 - plt->output_section->vma
4097 - plt->output_offset
4098 - plt_offset
765e526c 4099 - htab->non_lazy_plt->plt_got_insn_size);
dd7e64d4
L		 4100
4101 /* Check PC-relative offset overflow in GOT PLT entry. */
4102 got_after_plt = got->output_section->vma > plt->output_section->vma;
4103 if ((got_after_plt && got_pcrel_offset < 0)
4104 || (!got_after_plt && got_pcrel_offset > 0))
695344c0 4105 /* xgettext:c-format */
dd7e64d4
L		 4106 info->callbacks->einfo (_("%F%B: PC-relative offset overflow in GOT PLT entry for `%s'\n"),
4107 output_bfd, h->root.root.string);
4108
4109 bfd_put_32 (output_bfd, got_pcrel_offset,
38b12349 4110 (plt->contents + plt_offset
765e526c 4111 + htab->non_lazy_plt->plt_got_offset));
dd7e64d4
L		 4112 }
4113
aec6b87e
L		 4114 if (!local_undefweak
4115 && !h->def_regular
dd7e64d4
L		 4116 && (h->plt.offset != (bfd_vma) -1
4117 || eh->plt_got.offset != (bfd_vma) -1))
4118 {
4119 /* Mark the symbol as undefined, rather than as defined in
4120 the .plt section. Leave the value if there were any
4121 relocations where pointer equality matters (this is a clue
4122 for the dynamic linker, to make function pointer
4123 comparisons work between an application and shared
4124 library), otherwise set it to zero. If a function is only
4125 called from a binary, there is no need to slow down
4126 shared libraries because of that. */
4127 sym->st_shndx = SHN_UNDEF;
4128 if (!h->pointer_equality_needed)
4129 sym->st_value = 0;
70256ad8
AJ		 4130 }
4131
aec6b87e
L		 4132 /* Don't generate dynamic GOT relocation against undefined weak
4133 symbol in executable. */
bffbf940 4134 if (h->got.offset != (bfd_vma) -1
0afcef53
L		 4135 && ! GOT_TLS_GD_ANY_P (elf_x86_hash_entry (h)->tls_type)
4136 && elf_x86_hash_entry (h)->tls_type != GOT_TLS_IE
aec6b87e 4137 && !local_undefweak)
053579d7 4138 {
053579d7 4139 Elf_Internal_Rela rela;
233cc9c1 4140 asection *relgot = htab->elf.srelgot;
053579d7
AJ		 4141
4142 /* This symbol has an entry in the global offset table. Set it
bffbf940 4143 up. */
6de2ae4a 4144 if (htab->elf.sgot == NULL || htab->elf.srelgot == NULL)
c434dee6 4145 abort ();
053579d7 4146
6de2ae4a
L		 4147 rela.r_offset = (htab->elf.sgot->output_section->vma
4148 + htab->elf.sgot->output_offset
dc810e39 4149 + (h->got.offset &~ (bfd_vma) 1));
053579d7
AJ		 4150
4151 /* If this is a static link, or it is a -Bsymbolic link and the
4152 symbol is defined locally or was forced to be local because
4153 of a version file, we just want to emit a RELATIVE reloc.
4154 The entry in the global offset table will already have been
4155 initialized in the relocate_section function. */
710ab287 4156 if (h->def_regular
0018b0a3
L		 4157 && h->type == STT_GNU_IFUNC)
4158 {
233cc9c1
L		 4159 if (h->plt.offset == (bfd_vma) -1)
4160 {
4161 /* STT_GNU_IFUNC is referenced without PLT. */
4162 if (htab->elf.splt == NULL)
4163 {
4164 /* use .rel[a].iplt section to store .got relocations
4165 in static executable. */
4166 relgot = htab->elf.irelplt;
4167 }
6999821f 4168 if (SYMBOL_REFERENCES_LOCAL_P (info, h))
233cc9c1 4169 {
6322e5c5 4170 info->callbacks->minfo (_("Local IFUNC function `%s' in %B\n"),
6322e5c5
L		 4171 h->root.root.string,
4172 h->root.u.def.section->owner);
4173
233cc9c1
L		 4174 rela.r_info = htab->r_info (0,
4175 R_X86_64_IRELATIVE);
4176 rela.r_addend = (h->root.u.def.value
4177 + h->root.u.def.section->output_section->vma
4178 + h->root.u.def.section->output_offset);
4179 }
4180 else
4181 goto do_glob_dat;
4182 }
4183 else if (bfd_link_pic (info))
710ab287
L		 4184 {
4185 /* Generate R_X86_64_GLOB_DAT. */
4186 goto do_glob_dat;
4187 }
4188 else
4189 {
90d60710 4190 asection *plt;
aab82f4c 4191 bfd_vma plt_offset;
90d60710 4192
710ab287
L		 4193 if (!h->pointer_equality_needed)
4194 abort ();
4195
4196 /* For non-shared object, we can't use .got.plt, which
4197 contains the real function addres if we need pointer
4198 equality. We load the GOT entry with the PLT entry. */
f2c29a16 4199 if (htab->plt_second != NULL)
aab82f4c 4200 {
f2c29a16
L		 4201 plt = htab->plt_second;
4202 plt_offset = eh->plt_second.offset;
aab82f4c
L		 4203 }
4204 else
4205 {
4206 plt = htab->elf.splt ? htab->elf.splt : htab->elf.iplt;
4207 plt_offset = h->plt.offset;
4208 }
710ab287
L		 4209 bfd_put_64 (output_bfd, (plt->output_section->vma
4210 + plt->output_offset
aab82f4c 4211 + plt_offset),
6de2ae4a 4212 htab->elf.sgot->contents + h->got.offset);
710ab287
L		 4213 return TRUE;
4214 }
0018b0a3 4215 }
0e1862bb 4216 else if (bfd_link_pic (info)
6999821f 4217 && SYMBOL_REFERENCES_LOCAL_P (info, h))
053579d7 4218 {
ad71ce8d 4219 if (!(h->def_regular || ELF_COMMON_DEF_P (h)))
41bed6dd 4220 return FALSE;
cc78d0af 4221 BFD_ASSERT((h->got.offset & 1) != 0);
351f65ca 4222 rela.r_info = htab->r_info (0, R_X86_64_RELATIVE);
053579d7
AJ		 4223 rela.r_addend = (h->root.u.def.value
4224 + h->root.u.def.section->output_section->vma
4225 + h->root.u.def.section->output_offset);
4226 }
4227 else
4228 {
4229 BFD_ASSERT((h->got.offset & 1) == 0);
710ab287 4230do_glob_dat:
c434dee6 4231 bfd_put_64 (output_bfd, (bfd_vma) 0,
6de2ae4a 4232 htab->elf.sgot->contents + h->got.offset);
351f65ca 4233 rela.r_info = htab->r_info (h->dynindx, R_X86_64_GLOB_DAT);
053579d7
AJ		 4234 rela.r_addend = 0;
4235 }
4236
233cc9c1 4237 elf_append_rela (output_bfd, relgot, &rela);
053579d7
AJ		 4238 }
4239
f5385ebf 4240 if (h->needs_copy)
70256ad8 4241 {
70256ad8 4242 Elf_Internal_Rela rela;
5474d94f 4243 asection *s;
70256ad8
AJ		 4244
4245 /* This symbol needs a copy reloc. Set it up. */
ff38b4cc 4246 VERIFY_COPY_RELOC (h, htab)
70256ad8
AJ		 4247
4248 rela.r_offset = (h->root.u.def.value
4249 + h->root.u.def.section->output_section->vma
4250 + h->root.u.def.section->output_offset);
351f65ca 4251 rela.r_info = htab->r_info (h->dynindx, R_X86_64_COPY);
70256ad8 4252 rela.r_addend = 0;
afbf7e8e 4253 if (h->root.u.def.section == htab->elf.sdynrelro)
5474d94f
AM		 4254 s = htab->elf.sreldynrelro;
4255 else
4256 s = htab->elf.srelbss;
4257 elf_append_rela (output_bfd, s, &rela);
70256ad8
AJ		 4258 }
4259
b34976b6 4260 return TRUE;
70256ad8
AJ		 4261}
4262
c25bc9fc
L		 4263/* Finish up local dynamic symbol handling. We set the contents of
4264 various dynamic sections here. */
4265
4266static bfd_boolean
351f65ca 4267elf_x86_64_finish_local_dynamic_symbol (void **slot, void *inf)
c25bc9fc
L		 4268{
4269 struct elf_link_hash_entry *h
4270 = (struct elf_link_hash_entry *) *slot;
4271 struct bfd_link_info *info
eed180f8 4272 = (struct bfd_link_info *) inf;
c25bc9fc 4273
351f65ca 4274 return elf_x86_64_finish_dynamic_symbol (info->output_bfd,
5f0f0847 4275 info, h, NULL);
c25bc9fc
L		 4276}
4277
aec6b87e
L		 4278/* Finish up undefined weak symbol handling in PIE. Fill its PLT entry
4279 here since undefined weak symbol may not be dynamic and may not be
4280 called for elf_x86_64_finish_dynamic_symbol. */
4281
4282static bfd_boolean
4283elf_x86_64_pie_finish_undefweak_symbol (struct bfd_hash_entry *bh,
4284 void *inf)
4285{
4286 struct elf_link_hash_entry *h = (struct elf_link_hash_entry *) bh;
4287 struct bfd_link_info *info = (struct bfd_link_info *) inf;
4288
4289 if (h->root.type != bfd_link_hash_undefweak
4290 || h->dynindx != -1)
4291 return TRUE;
4292
4293 return elf_x86_64_finish_dynamic_symbol (info->output_bfd,
5f0f0847 4294 info, h, NULL);
aec6b87e
L		 4295}
4296
c434dee6
AJ		 4297/* Used to decide how to sort relocs in an optimal manner for the
4298 dynamic linker, before writing them out. */
4299
4300static enum elf_reloc_type_class
cae1fbbb 4301elf_x86_64_reloc_type_class (const struct bfd_link_info *info,
7e612e98
AM		 4302 const asection *rel_sec ATTRIBUTE_UNUSED,
4303 const Elf_Internal_Rela *rela)
c434dee6 4304{
cae1fbbb
L		 4305 bfd *abfd = info->output_bfd;
4306 const struct elf_backend_data *bed = get_elf_backend_data (abfd);
0afcef53
L		 4307 struct elf_x86_link_hash_table *htab
4308 = elf_x86_hash_table (info, X86_64_ELF_DATA);
cae1fbbb 4309
d9e3b590
L		 4310 if (htab->elf.dynsym != NULL
4311 && htab->elf.dynsym->contents != NULL)
4312 {
4313 /* Check relocation against STT_GNU_IFUNC symbol if there are
07d6d2b8 4314 dynamic symbols. */
d9e3b590 4315 unsigned long r_symndx = htab->r_sym (rela->r_info);
897463b1
L		 4316 if (r_symndx != STN_UNDEF)
4317 {
4318 Elf_Internal_Sym sym;
4319 if (!bed->s->swap_symbol_in (abfd,
4320 (htab->elf.dynsym->contents
4321 + r_symndx * bed->s->sizeof_sym),
4322 0, &sym))
4323 abort ();
d9e3b590 4324
897463b1
L		 4325 if (ELF_ST_TYPE (sym.st_info) == STT_GNU_IFUNC)
4326 return reloc_class_ifunc;
4327 }
d9e3b590 4328 }
cae1fbbb 4329
351f65ca 4330 switch ((int) ELF32_R_TYPE (rela->r_info))
c434dee6 4331 {
c428ce9d
L		 4332 case R_X86_64_IRELATIVE:
4333 return reloc_class_ifunc;
c434dee6 4334 case R_X86_64_RELATIVE:
1da80baa 4335 case R_X86_64_RELATIVE64:
c434dee6
AJ		 4336 return reloc_class_relative;
4337 case R_X86_64_JUMP_SLOT:
4338 return reloc_class_plt;
4339 case R_X86_64_COPY:
4340 return reloc_class_copy;
4341 default:
4342 return reloc_class_normal;
4343 }
4344}
4345
70256ad8
AJ		 4346/* Finish up the dynamic sections. */
4347
b34976b6 4348static bfd_boolean
351f65ca
L		 4349elf_x86_64_finish_dynamic_sections (bfd *output_bfd,
4350 struct bfd_link_info *info)
70256ad8 4351{
0afcef53 4352 struct elf_x86_link_hash_table *htab;
70256ad8 4353
9577f60b 4354 htab = _bfd_x86_elf_finish_dynamic_sections (output_bfd, info);
4dfe6ac6
NC		 4355 if (htab == NULL)
4356 return FALSE;
4357
9577f60b
L		 4358 if (! htab->elf.dynamic_sections_created)
4359 return TRUE;
70256ad8 4360
9577f60b 4361 if (htab->elf.splt && htab->elf.splt->size > 0)
e41b3a13 4362 {
9577f60b
L		 4363 elf_section_data (htab->elf.splt->output_section)
4364 ->this_hdr.sh_entsize = htab->plt.plt_entry_size;
e41b3a13 4365
9577f60b 4366 if (htab->plt.has_plt0)
fff53dae 4367 {
9577f60b
L		 4368 /* Fill in the special first entry in the procedure linkage
4369 table. */
4370 memcpy (htab->elf.splt->contents,
4371 htab->lazy_plt->plt0_entry,
4372 htab->lazy_plt->plt0_entry_size);
4373 /* Add offset for pushq GOT+8(%rip), since the instruction
4374 uses 6 bytes subtract this value. */
4375 bfd_put_32 (output_bfd,
4376 (htab->elf.sgotplt->output_section->vma
4377 + htab->elf.sgotplt->output_offset
4378 + 8
4379 - htab->elf.splt->output_section->vma
4380 - htab->elf.splt->output_offset
4381 - 6),
4382 (htab->elf.splt->contents
4383 + htab->lazy_plt->plt0_got1_offset));
4384 /* Add offset for the PC-relative instruction accessing
4385 GOT+16, subtracting the offset to the end of that
4386 instruction. */
4387 bfd_put_32 (output_bfd,
4388 (htab->elf.sgotplt->output_section->vma
4389 + htab->elf.sgotplt->output_offset
4390 + 16
4391 - htab->elf.splt->output_section->vma
4392 - htab->elf.splt->output_offset
4393 - htab->lazy_plt->plt0_got2_insn_end),
4394 (htab->elf.splt->contents
4395 + htab->lazy_plt->plt0_got2_offset));
fff53dae 4396 }
fff53dae 4397
9577f60b 4398 if (htab->tlsdesc_plt)
8361ed4d 4399 {
9577f60b
L		 4400 bfd_put_64 (output_bfd, (bfd_vma) 0,
4401 htab->elf.sgot->contents + htab->tlsdesc_got);
4402
4403 memcpy (htab->elf.splt->contents + htab->tlsdesc_plt,
4404 htab->lazy_plt->plt0_entry,
4405 htab->lazy_plt->plt0_entry_size);
4406
4407 /* Add offset for pushq GOT+8(%rip), since the
4408 instruction uses 6 bytes subtract this value. */
4409 bfd_put_32 (output_bfd,
4410 (htab->elf.sgotplt->output_section->vma
4411 + htab->elf.sgotplt->output_offset
4412 + 8
4413 - htab->elf.splt->output_section->vma
4414 - htab->elf.splt->output_offset
4415 - htab->tlsdesc_plt
4416 - 6),
4417 (htab->elf.splt->contents
4418 + htab->tlsdesc_plt
4419 + htab->lazy_plt->plt0_got1_offset));
4420 /* Add offset for the PC-relative instruction accessing
4421 GOT+TDG, where TDG stands for htab->tlsdesc_got,
4422 subtracting the offset to the end of that
4423 instruction. */
4424 bfd_put_32 (output_bfd,
4425 (htab->elf.sgot->output_section->vma
4426 + htab->elf.sgot->output_offset
4427 + htab->tlsdesc_got
4428 - htab->elf.splt->output_section->vma
4429 - htab->elf.splt->output_offset
4430 - htab->tlsdesc_plt
4431 - htab->lazy_plt->plt0_got2_insn_end),
4432 (htab->elf.splt->contents
4433 + htab->tlsdesc_plt
4434 + htab->lazy_plt->plt0_got2_offset));
8361ed4d
L		 4435 }
4436 }
4437
aec6b87e
L		 4438 /* Fill PLT entries for undefined weak symbols in PIE. */
4439 if (bfd_link_pie (info))
4440 bfd_hash_traverse (&info->hash->table,
4441 elf_x86_64_pie_finish_undefweak_symbol,
4442 info);
4443
b34976b6 4444 return TRUE;
8d88c4ca
NC		 4445}
4446
233cc9c1
L		 4447/* Fill PLT/GOT entries and allocate dynamic relocations for local
4448 STT_GNU_IFUNC symbols, which aren't in the ELF linker hash table.
4449 It has to be done before elf_link_sort_relocs is called so that
4450 dynamic relocations are properly sorted. */
4451
4452static bfd_boolean
4453elf_x86_64_output_arch_local_syms
4454 (bfd *output_bfd ATTRIBUTE_UNUSED,
4455 struct bfd_link_info *info,
4456 void *flaginfo ATTRIBUTE_UNUSED,
4457 int (*func) (void *, const char *,
4458 Elf_Internal_Sym *,
4459 asection *,
4460 struct elf_link_hash_entry *) ATTRIBUTE_UNUSED)
4461{
0afcef53
L		 4462 struct elf_x86_link_hash_table *htab
4463 = elf_x86_hash_table (info, X86_64_ELF_DATA);
233cc9c1
L		 4464 if (htab == NULL)
4465 return FALSE;
4466
4467 /* Fill PLT and GOT entries for local STT_GNU_IFUNC symbols. */
4468 htab_traverse (htab->loc_hash_table,
4469 elf_x86_64_finish_local_dynamic_symbol,
4470 info);
4471
4472 return TRUE;
4473}
4474
38b12349 4475/* Forward declaration. */
765e526c 4476static const struct elf_x86_lazy_plt_layout elf_x86_64_nacl_plt;
38b12349
L		 4477
4478/* Similar to _bfd_elf_get_synthetic_symtab. Support PLTs with all
4479 dynamic relocations. */
4480
4481static long
4482elf_x86_64_get_synthetic_symtab (bfd *abfd,
4483 long symcount ATTRIBUTE_UNUSED,
4484 asymbol **syms ATTRIBUTE_UNUSED,
4485 long dynsymcount,
4486 asymbol **dynsyms,
4487 asymbol **ret)
4488{
f493882d 4489 long count, i, n;
38b12349 4490 int j;
38b12349 4491 bfd_byte *plt_contents;
f493882d 4492 long relsize;
765e526c
L		 4493 const struct elf_x86_lazy_plt_layout *lazy_plt;
4494 const struct elf_x86_non_lazy_plt_layout *non_lazy_plt;
4495 const struct elf_x86_lazy_plt_layout *lazy_bnd_plt;
4496 const struct elf_x86_non_lazy_plt_layout *non_lazy_bnd_plt;
4497 const struct elf_x86_lazy_plt_layout *lazy_ibt_plt;
4498 const struct elf_x86_non_lazy_plt_layout *non_lazy_ibt_plt;
38b12349 4499 asection *plt;
f493882d
L		 4500 enum elf_x86_plt_type plt_type;
4501 struct elf_x86_plt plts[] =
144bed8d 4502 {
38b12349
L		 4503 { ".plt", NULL, NULL, plt_unknown, 0, 0, 0, 0 },
4504 { ".plt.got", NULL, NULL, plt_non_lazy, 0, 0, 0, 0 },
f2c29a16
L		 4505 { ".plt.sec", NULL, NULL, plt_second, 0, 0, 0, 0 },
4506 { ".plt.bnd", NULL, NULL, plt_second, 0, 0, 0, 0 },
dd9e66ee 4507 { NULL, NULL, NULL, plt_non_lazy, 0, 0, 0, 0 }
38b12349 4508 };
144bed8d 4509
38b12349 4510 *ret = NULL;
144bed8d 4511
38b12349
L		 4512 if ((abfd->flags & (DYNAMIC | EXEC_P)) == 0)
4513 return 0;
144bed8d 4514
38b12349
L		 4515 if (dynsymcount <= 0)
4516 return 0;
cca5b8b6 4517
38b12349
L		 4518 relsize = bfd_get_dynamic_reloc_upper_bound (abfd);
4519 if (relsize <= 0)
4520 return -1;
4521
851b6fa1 4522 if (get_elf_x86_backend_data (abfd)->target_os == is_normal)
144bed8d 4523 {
38b12349
L		 4524 lazy_plt = &elf_x86_64_lazy_plt;
4525 non_lazy_plt = &elf_x86_64_non_lazy_plt;
4526 lazy_bnd_plt = &elf_x86_64_lazy_bnd_plt;
4527 non_lazy_bnd_plt = &elf_x86_64_non_lazy_bnd_plt;
ee2fdd6f
L		 4528 if (ABI_64_P (abfd))
4529 {
4530 lazy_ibt_plt = &elf_x86_64_lazy_ibt_plt;
4531 non_lazy_ibt_plt = &elf_x86_64_non_lazy_ibt_plt;
4532 }
4533 else
4534 {
4535 lazy_ibt_plt = &elf_x32_lazy_ibt_plt;
4536 non_lazy_ibt_plt = &elf_x32_non_lazy_ibt_plt;
4537 }
38b12349
L		 4538 }
4539 else
4540 {
4541 lazy_plt = &elf_x86_64_nacl_plt;
4542 non_lazy_plt = NULL;
4543 lazy_bnd_plt = NULL;
4544 non_lazy_bnd_plt = NULL;
ee2fdd6f
L		 4545 lazy_ibt_plt = NULL;
4546 non_lazy_ibt_plt = NULL;
38b12349 4547 }
144bed8d 4548
38b12349
L		 4549 count = 0;
4550 for (j = 0; plts[j].name != NULL; j++)
4551 {
4552 plt = bfd_get_section_by_name (abfd, plts[j].name);
90efb642 4553 if (plt == NULL || plt->size == 0)
6f25f223 4554 continue;
533d0af0 4555
38b12349
L		 4556 /* Get the PLT section contents. */
4557 plt_contents = (bfd_byte *) bfd_malloc (plt->size);
4558 if (plt_contents == NULL)
4559 break;
4560 if (!bfd_get_section_contents (abfd, (asection *) plt,
4561 plt_contents, 0, plt->size))
4562 {
4563 free (plt_contents);
4564 break;
4565 }
144bed8d 4566
38b12349
L		 4567 /* Check what kind of PLT it is. */
4568 plt_type = plt_unknown;
90efb642
L		 4569 if (plts[j].type == plt_unknown
4570 && (plt->size >= (lazy_plt->plt_entry_size
4571 + lazy_plt->plt_entry_size)))
144bed8d 4572 {
38b12349
L		 4573 /* Match lazy PLT first. Need to check the first two
4574 instructions. */
4575 if ((memcmp (plt_contents, lazy_plt->plt0_entry,
4576 lazy_plt->plt0_got1_offset) == 0)
4577 && (memcmp (plt_contents + 6, lazy_plt->plt0_entry + 6,
4578 2) == 0))
4579 plt_type = plt_lazy;
4580 else if (lazy_bnd_plt != NULL
4581 && (memcmp (plt_contents, lazy_bnd_plt->plt0_entry,
4582 lazy_bnd_plt->plt0_got1_offset) == 0)
4583 && (memcmp (plt_contents + 6,
4584 lazy_bnd_plt->plt0_entry + 6, 3) == 0))
ec1f73bb 4585 {
f2c29a16 4586 plt_type = plt_lazy | plt_second;
ee2fdd6f
L		 4587 /* The fist entry in the lazy IBT PLT is the same as the
4588 lazy BND PLT. */
4589 if ((memcmp (plt_contents + lazy_ibt_plt->plt_entry_size,
4590 lazy_ibt_plt->plt_entry,
4591 lazy_ibt_plt->plt_got_offset) == 0))
4592 lazy_plt = lazy_ibt_plt;
4593 else
4594 lazy_plt = lazy_bnd_plt;
ec1f73bb 4595 }
144bed8d 4596 }
fca6ae69 4597
38b12349 4598 if (non_lazy_plt != NULL
90efb642
L		 4599 && (plt_type == plt_unknown || plt_type == plt_non_lazy)
4600 && plt->size >= non_lazy_plt->plt_entry_size)
38b12349
L		 4601 {
4602 /* Match non-lazy PLT. */
4603 if (memcmp (plt_contents, non_lazy_plt->plt_entry,
4604 non_lazy_plt->plt_got_offset) == 0)
4605 plt_type = plt_non_lazy;
4606 }
4607
ee2fdd6f 4608 if (plt_type == plt_unknown || plt_type == plt_second)
38b12349 4609 {
ee2fdd6f 4610 if (non_lazy_bnd_plt != NULL
90efb642 4611 && plt->size >= non_lazy_bnd_plt->plt_entry_size
ee2fdd6f
L		 4612 && (memcmp (plt_contents, non_lazy_bnd_plt->plt_entry,
4613 non_lazy_bnd_plt->plt_got_offset) == 0))
38b12349 4614 {
ee2fdd6f 4615 /* Match BND PLT. */
f2c29a16 4616 plt_type = plt_second;
38b12349
L		 4617 non_lazy_plt = non_lazy_bnd_plt;
4618 }
ee2fdd6f 4619 else if (non_lazy_ibt_plt != NULL
90efb642 4620 && plt->size >= non_lazy_ibt_plt->plt_entry_size
ee2fdd6f
L		 4621 && (memcmp (plt_contents,
4622 non_lazy_ibt_plt->plt_entry,
4623 non_lazy_ibt_plt->plt_got_offset) == 0))
4624 {
4625 /* Match IBT PLT. */
4626 plt_type = plt_second;
4627 non_lazy_plt = non_lazy_ibt_plt;
4628 }
38b12349
L		 4629 }
4630
4631 if (plt_type == plt_unknown)
37c0b6ee
L		 4632 {
4633 free (plt_contents);
4634 continue;
4635 }
38b12349
L		 4636
4637 plts[j].sec = plt;
4638 plts[j].type = plt_type;
4639
4640 if ((plt_type & plt_lazy))
4641 {
4642 plts[j].plt_got_offset = lazy_plt->plt_got_offset;
4643 plts[j].plt_got_insn_size = lazy_plt->plt_got_insn_size;
4644 plts[j].plt_entry_size = lazy_plt->plt_entry_size;
4645 /* Skip PLT0 in lazy PLT. */
4646 i = 1;
4647 }
4648 else
4649 {
4650 plts[j].plt_got_offset = non_lazy_plt->plt_got_offset;
4651 plts[j].plt_got_insn_size = non_lazy_plt->plt_got_insn_size;
4652 plts[j].plt_entry_size = non_lazy_plt->plt_entry_size;
4653 i = 0;
4654 }
4655
f2c29a16
L		 4656 /* Skip lazy PLT when the second PLT is used. */
4657 if (plt_type == (plt_lazy | plt_second))
38b12349
L		 4658 plts[j].count = 0;
4659 else
4660 {
4661 n = plt->size / plts[j].plt_entry_size;
4662 plts[j].count = n;
4663 count += n - i;
4664 }
4665
4666 plts[j].contents = plt_contents;
144bed8d
L		 4667 }
4668
f493882d
L		 4669 return _bfd_x86_elf_get_synthetic_symtab (abfd, count, relsize,
4670 (bfd_vma) 0, plts, dynsyms,
4671 ret);
0ff2b86e
L		 4672}
4673
d2b2c203
DJ		 4674/* Handle an x86-64 specific section when reading an object file. This
4675 is called when elfcode.h finds a section with an unknown type. */
4676
4677static bfd_boolean
0c723101
L		 4678elf_x86_64_section_from_shdr (bfd *abfd, Elf_Internal_Shdr *hdr,
4679 const char *name, int shindex)
d2b2c203
DJ		 4680{
4681 if (hdr->sh_type != SHT_X86_64_UNWIND)
4682 return FALSE;
4683
6dc132d9 4684 if (! _bfd_elf_make_section_from_shdr (abfd, hdr, name, shindex))
d2b2c203
DJ		 4685 return FALSE;
4686
4687 return TRUE;
4688}
4689
3b22753a
L		 4690/* Hook called by the linker routine which adds symbols from an object
4691 file. We use it to put SHN_X86_64_LCOMMON items in .lbss, instead
4692 of .bss. */
4693
4694static bfd_boolean
351f65ca 4695elf_x86_64_add_symbol_hook (bfd *abfd,
a43942db 4696 struct bfd_link_info *info ATTRIBUTE_UNUSED,
351f65ca
L		 4697 Elf_Internal_Sym *sym,
4698 const char **namep ATTRIBUTE_UNUSED,
4699 flagword *flagsp ATTRIBUTE_UNUSED,
4700 asection **secp,
4701 bfd_vma *valp)
3b22753a
L		 4702{
4703 asection *lcomm;
4704
4705 switch (sym->st_shndx)
4706 {
4707 case SHN_X86_64_LCOMMON:
4708 lcomm = bfd_get_section_by_name (abfd, "LARGE_COMMON");
4709 if (lcomm == NULL)
4710 {
4711 lcomm = bfd_make_section_with_flags (abfd,
4712 "LARGE_COMMON",
4713 (SEC_ALLOC
4714 | SEC_IS_COMMON
4715 | SEC_LINKER_CREATED));
4716 if (lcomm == NULL)
4717 return FALSE;
4718 elf_section_flags (lcomm) |= SHF_X86_64_LARGE;
4719 }
4720 *secp = lcomm;
4721 *valp = sym->st_size;
c35bdf6e 4722 return TRUE;
3b22753a 4723 }
d8045f23 4724
3b22753a
L		 4725 return TRUE;
4726}
4727
4728
4729/* Given a BFD section, try to locate the corresponding ELF section
4730 index. */
4731
4732static bfd_boolean
351f65ca
L		 4733elf_x86_64_elf_section_from_bfd_section (bfd *abfd ATTRIBUTE_UNUSED,
4734 asection *sec, int *index_return)
3b22753a
L		 4735{
4736 if (sec == &_bfd_elf_large_com_section)
4737 {
91d6fa6a 4738 *index_return = SHN_X86_64_LCOMMON;
3b22753a
L		 4739 return TRUE;
4740 }
4741 return FALSE;
4742}
4743
4744/* Process a symbol. */
4745
4746static void
351f65ca
L		 4747elf_x86_64_symbol_processing (bfd *abfd ATTRIBUTE_UNUSED,
4748 asymbol *asym)
3b22753a
L		 4749{
4750 elf_symbol_type *elfsym = (elf_symbol_type *) asym;
4751
4752 switch (elfsym->internal_elf_sym.st_shndx)
4753 {
4754 case SHN_X86_64_LCOMMON:
4755 asym->section = &_bfd_elf_large_com_section;
4756 asym->value = elfsym->internal_elf_sym.st_size;
4757 /* Common symbol doesn't set BSF_GLOBAL. */
4758 asym->flags &= ~BSF_GLOBAL;
4759 break;
4760 }
4761}
4762
4763static bfd_boolean
351f65ca 4764elf_x86_64_common_definition (Elf_Internal_Sym *sym)
3b22753a
L		 4765{
4766 return (sym->st_shndx == SHN_COMMON
4767 || sym->st_shndx == SHN_X86_64_LCOMMON);
4768}
4769
4770static unsigned int
351f65ca 4771elf_x86_64_common_section_index (asection *sec)
3b22753a
L		 4772{
4773 if ((elf_section_flags (sec) & SHF_X86_64_LARGE) == 0)
4774 return SHN_COMMON;
4775 else
4776 return SHN_X86_64_LCOMMON;
4777}
4778
4779static asection *
351f65ca 4780elf_x86_64_common_section (asection *sec)
3b22753a
L		 4781{
4782 if ((elf_section_flags (sec) & SHF_X86_64_LARGE) == 0)
4783 return bfd_com_section_ptr;
4784 else
4785 return &_bfd_elf_large_com_section;
4786}
4787
4788static bfd_boolean
5d13b3b3
AM		 4789elf_x86_64_merge_symbol (struct elf_link_hash_entry *h,
4790 const Elf_Internal_Sym *sym,
351f65ca 4791 asection **psec,
5d13b3b3
AM		 4792 bfd_boolean newdef,
4793 bfd_boolean olddef,
351f65ca 4794 bfd *oldbfd,
5d13b3b3 4795 const asection *oldsec)
3b22753a
L		 4796{
4797 /* A normal common symbol and a large common symbol result in a
00492999
L		 4798 normal common symbol. We turn the large common symbol into a
4799 normal one. */
5d13b3b3 4800 if (!olddef
3b22753a 4801 && h->root.type == bfd_link_hash_common
5d13b3b3
AM		 4802 && !newdef
4803 && bfd_is_com_section (*psec)
4804 && oldsec != *psec)
3b22753a 4805 {
00492999 4806 if (sym->st_shndx == SHN_COMMON
5d13b3b3 4807 && (elf_section_flags (oldsec) & SHF_X86_64_LARGE) != 0)
00492999
L		 4808 {
4809 h->root.u.c.p->section
4810 = bfd_make_section_old_way (oldbfd, "COMMON");
4811 h->root.u.c.p->section->flags = SEC_ALLOC;
4812 }
4813 else if (sym->st_shndx == SHN_X86_64_LCOMMON
5d13b3b3
AM		 4814 && (elf_section_flags (oldsec) & SHF_X86_64_LARGE) == 0)
4815 *psec = bfd_com_section_ptr;
3b22753a
L		 4816 }
4817
4818 return TRUE;
4819}
4820
4821static int
351f65ca
L		 4822elf_x86_64_additional_program_headers (bfd *abfd,
4823 struct bfd_link_info *info ATTRIBUTE_UNUSED)
3b22753a
L		 4824{
4825 asection *s;
9a2e389a 4826 int count = 0;
3b22753a
L		 4827
4828 /* Check to see if we need a large readonly segment. */
4829 s = bfd_get_section_by_name (abfd, ".lrodata");
4830 if (s && (s->flags & SEC_LOAD))
4831 count++;
4832
4833 /* Check to see if we need a large data segment. Since .lbss sections
4834 is placed right after the .bss section, there should be no need for
4835 a large data segment just because of .lbss. */
4836 s = bfd_get_section_by_name (abfd, ".ldata");
4837 if (s && (s->flags & SEC_LOAD))
4838 count++;
4839
4840 return count;
4841}
4842
c543bf9a
L		 4843/* Return TRUE iff relocations for INPUT are compatible with OUTPUT. */
4844
4845static bfd_boolean
4846elf_x86_64_relocs_compatible (const bfd_target *input,
4847 const bfd_target *output)
4848{
4849 return ((xvec_get_elf_backend_data (input)->s->elfclass
4850 == xvec_get_elf_backend_data (output)->s->elfclass)
4851 && _bfd_elf_relocs_compatible (input, output));
4852}
4853
38b12349
L		 4854/* Set up x86-64 GNU properties. Return the first relocatable ELF input
4855 with GNU properties if found. Otherwise, return NULL. */
4856
4857static bfd *
4858elf_x86_64_link_setup_gnu_properties (struct bfd_link_info *info)
4859{
1de031c8 4860 struct elf_x86_init_table init_table;
ee2fdd6f 4861
78984959
L		 4862 if ((int) R_X86_64_standard >= (int) R_X86_64_converted_reloc_bit
4863 || (int) R_X86_64_max <= (int) R_X86_64_converted_reloc_bit
4864 || ((int) (R_X86_64_GNU_VTINHERIT | R_X86_64_converted_reloc_bit)
4865 != (int) R_X86_64_GNU_VTINHERIT)
4866 || ((int) (R_X86_64_GNU_VTENTRY | R_X86_64_converted_reloc_bit)
4867 != (int) R_X86_64_GNU_VTENTRY))
4868 abort ();
4869
851b6fa1
L		 4870 /* This is unused for x86-64. */
4871 init_table.plt0_pad_byte = 0x90;
4872
4873 if (get_elf_x86_backend_data (info->output_bfd)->target_os
4874 == is_normal)
73784fa5 4875 {
a6798bab 4876 if (info->bndplt)
ee2fdd6f 4877 {
1de031c8
L		 4878 init_table.lazy_plt = &elf_x86_64_lazy_bnd_plt;
4879 init_table.non_lazy_plt = &elf_x86_64_non_lazy_bnd_plt;
ee2fdd6f
L		 4880 }
4881 else
4882 {
1de031c8
L		 4883 init_table.lazy_plt = &elf_x86_64_lazy_plt;
4884 init_table.non_lazy_plt = &elf_x86_64_non_lazy_plt;
ee2fdd6f 4885 }
38b12349 4886
a6798bab 4887 if (ABI_64_P (info->output_bfd))
38b12349 4888 {
1de031c8
L		 4889 init_table.lazy_ibt_plt = &elf_x86_64_lazy_ibt_plt;
4890 init_table.non_lazy_ibt_plt = &elf_x86_64_non_lazy_ibt_plt;
38b12349
L		 4891 }
4892 else
4893 {
1de031c8
L		 4894 init_table.lazy_ibt_plt = &elf_x32_lazy_ibt_plt;
4895 init_table.non_lazy_ibt_plt = &elf_x32_non_lazy_ibt_plt;
38b12349 4896 }
38b12349
L		 4897 }
4898 else
4899 {
1de031c8
L		 4900 init_table.lazy_plt = &elf_x86_64_nacl_plt;
4901 init_table.non_lazy_plt = NULL;
4902 init_table.lazy_ibt_plt = NULL;
4903 init_table.non_lazy_ibt_plt = NULL;
38b12349
L		 4904 }
4905
7a382c1c
L		 4906 if (ABI_64_P (info->output_bfd))
4907 {
1de031c8
L		 4908 init_table.r_info = elf64_r_info;
4909 init_table.r_sym = elf64_r_sym;
7a382c1c
L		 4910 }
4911 else
4912 {
1de031c8
L		 4913 init_table.r_info = elf32_r_info;
4914 init_table.r_sym = elf32_r_sym;
7a382c1c
L		 4915 }
4916
1de031c8 4917 return _bfd_x86_elf_link_setup_gnu_properties (info, &init_table);
38b12349
L		 4918}
4919
9a2e389a 4920static const struct bfd_elf_special_section
46bed679 4921elf_x86_64_special_sections[]=
3b22753a 4922{
0112cd26
NC		 4923 { STRING_COMMA_LEN (".gnu.linkonce.lb"), -2, SHT_NOBITS, SHF_ALLOC + SHF_WRITE + SHF_X86_64_LARGE},
4924 { STRING_COMMA_LEN (".gnu.linkonce.lr"), -2, SHT_PROGBITS, SHF_ALLOC + SHF_X86_64_LARGE},
4925 { STRING_COMMA_LEN (".gnu.linkonce.lt"), -2, SHT_PROGBITS, SHF_ALLOC + SHF_EXECINSTR + SHF_X86_64_LARGE},
07d6d2b8 4926 { STRING_COMMA_LEN (".lbss"), -2, SHT_NOBITS, SHF_ALLOC + SHF_WRITE + SHF_X86_64_LARGE},
0112cd26
NC		 4927 { STRING_COMMA_LEN (".ldata"), -2, SHT_PROGBITS, SHF_ALLOC + SHF_WRITE + SHF_X86_64_LARGE},
4928 { STRING_COMMA_LEN (".lrodata"), -2, SHT_PROGBITS, SHF_ALLOC + SHF_X86_64_LARGE},
07d6d2b8 4929 { NULL, 0, 0, 0, 0 }
3b22753a
L		 4930};
4931
6d00b590 4932#define TARGET_LITTLE_SYM x86_64_elf64_vec
70256ad8
AJ		 4933#define TARGET_LITTLE_NAME "elf64-x86-64"
4934#define ELF_ARCH bfd_arch_i386
ae95ffa6 4935#define ELF_TARGET_ID X86_64_ELF_DATA
70256ad8 4936#define ELF_MACHINE_CODE EM_X86_64
f7661549 4937#define ELF_MAXPAGESIZE 0x200000
2043964e 4938#define ELF_MINPAGESIZE 0x1000
24718e3b 4939#define ELF_COMMONPAGESIZE 0x1000
70256ad8
AJ		 4940
4941#define elf_backend_can_gc_sections 1
51b64d56 4942#define elf_backend_can_refcount 1
70256ad8
AJ		 4943#define elf_backend_want_got_plt 1
4944#define elf_backend_plt_readonly 1
4945#define elf_backend_want_plt_sym 0
4946#define elf_backend_got_header_size (GOT_ENTRY_SIZE*3)
b491616a 4947#define elf_backend_rela_normal 1
07d6d2b8 4948#define elf_backend_plt_alignment 4
f7483970 4949#define elf_backend_extern_protected_data 1
bedfd056 4950#define elf_backend_caches_rawsize 1
64f52338 4951#define elf_backend_dtrel_excludes_plt 1
5474d94f 4952#define elf_backend_want_dynrelro 1
70256ad8 4953
351f65ca 4954#define elf_info_to_howto elf_x86_64_info_to_howto
70256ad8 4955
351f65ca 4956#define bfd_elf64_bfd_reloc_type_lookup elf_x86_64_reloc_type_lookup
157090f7 4957#define bfd_elf64_bfd_reloc_name_lookup \
351f65ca 4958 elf_x86_64_reloc_name_lookup
70256ad8 4959
c543bf9a 4960#define elf_backend_relocs_compatible elf_x86_64_relocs_compatible
351f65ca 4961#define elf_backend_check_relocs elf_x86_64_check_relocs
38b12349 4962#define elf_backend_create_dynamic_sections _bfd_elf_create_dynamic_sections
351f65ca
L		 4963#define elf_backend_finish_dynamic_sections elf_x86_64_finish_dynamic_sections
4964#define elf_backend_finish_dynamic_symbol elf_x86_64_finish_dynamic_symbol
233cc9c1 4965#define elf_backend_output_arch_local_syms elf_x86_64_output_arch_local_syms
351f65ca
L		 4966#define elf_backend_grok_prstatus elf_x86_64_grok_prstatus
4967#define elf_backend_grok_psinfo elf_x86_64_grok_psinfo
8fd79e71
L		 4968#ifdef CORE_HEADER
4969#define elf_backend_write_core_note elf_x86_64_write_core_note
4970#endif
351f65ca
L		 4971#define elf_backend_reloc_type_class elf_x86_64_reloc_type_class
4972#define elf_backend_relocate_section elf_x86_64_relocate_section
74541ad4 4973#define elf_backend_init_index_section _bfd_elf_init_1_index_section
407443a3 4974#define elf_backend_object_p elf64_x86_64_elf_object_p
0ff2b86e 4975#define bfd_elf64_get_synthetic_symtab elf_x86_64_get_synthetic_symtab
8d88c4ca 4976
d2b2c203 4977#define elf_backend_section_from_shdr \
351f65ca 4978 elf_x86_64_section_from_shdr
d2b2c203 4979
3b22753a 4980#define elf_backend_section_from_bfd_section \
351f65ca 4981 elf_x86_64_elf_section_from_bfd_section
3b22753a 4982#define elf_backend_add_symbol_hook \
351f65ca 4983 elf_x86_64_add_symbol_hook
3b22753a 4984#define elf_backend_symbol_processing \
351f65ca 4985 elf_x86_64_symbol_processing
3b22753a 4986#define elf_backend_common_section_index \
351f65ca 4987 elf_x86_64_common_section_index
3b22753a 4988#define elf_backend_common_section \
351f65ca 4989 elf_x86_64_common_section
3b22753a 4990#define elf_backend_common_definition \
351f65ca 4991 elf_x86_64_common_definition
3b22753a 4992#define elf_backend_merge_symbol \
351f65ca 4993 elf_x86_64_merge_symbol
3b22753a 4994#define elf_backend_special_sections \
351f65ca 4995 elf_x86_64_special_sections
3b22753a 4996#define elf_backend_additional_program_headers \
351f65ca 4997 elf_x86_64_additional_program_headers
38b12349 4998#define elf_backend_setup_gnu_properties \
9f857535
L		 4999 elf_x86_64_link_setup_gnu_properties
5000#define elf_backend_hide_symbol \
5001 _bfd_x86_elf_hide_symbol
3b22753a 5002
8d88c4ca 5003#include "elf64-target.h"
9d7cbccd 5004
6036f486
ES		 5005/* CloudABI support. */
5006
07d6d2b8 5007#undef TARGET_LITTLE_SYM
6036f486 5008#define TARGET_LITTLE_SYM x86_64_elf64_cloudabi_vec
07d6d2b8 5009#undef TARGET_LITTLE_NAME
6036f486
ES		 5010#define TARGET_LITTLE_NAME "elf64-x86-64-cloudabi"
5011
5012#undef ELF_OSABI
5013#define ELF_OSABI ELFOSABI_CLOUDABI
5014
07d6d2b8 5015#undef elf64_bed
6036f486
ES		 5016#define elf64_bed elf64_x86_64_cloudabi_bed
5017
5018#include "elf64-target.h"
5019
9d7cbccd
NC		 5020/* FreeBSD support. */
5021
07d6d2b8 5022#undef TARGET_LITTLE_SYM
6d00b590 5023#define TARGET_LITTLE_SYM x86_64_elf64_fbsd_vec
07d6d2b8 5024#undef TARGET_LITTLE_NAME
9d7cbccd
NC		 5025#define TARGET_LITTLE_NAME "elf64-x86-64-freebsd"
5026
d1036acb
L		 5027#undef ELF_OSABI
5028#define ELF_OSABI ELFOSABI_FREEBSD
9d7cbccd 5029
07d6d2b8 5030#undef elf64_bed
9d7cbccd
NC		 5031#define elf64_bed elf64_x86_64_fbsd_bed
5032
5033#include "elf64-target.h"
8a9036a4 5034
a6cc6b3b
RO		 5035/* Solaris 2 support. */
5036
5037#undef TARGET_LITTLE_SYM
6d00b590 5038#define TARGET_LITTLE_SYM x86_64_elf64_sol2_vec
a6cc6b3b
RO		 5039#undef TARGET_LITTLE_NAME
5040#define TARGET_LITTLE_NAME "elf64-x86-64-sol2"
5041
5042/* Restore default: we cannot use ELFOSABI_SOLARIS, otherwise ELFOSABI_NONE
5043 objects won't be recognized. */
5044#undef ELF_OSABI
5045
5046#undef elf64_bed
5047#define elf64_bed elf64_x86_64_sol2_bed
5048
7dc98aea
RO		 5049/* The 64-bit static TLS arena size is rounded to the nearest 16-byte
5050 boundary. */
84865015 5051#undef elf_backend_static_tls_alignment
7dc98aea
RO		 5052#define elf_backend_static_tls_alignment 16
5053
a6cc6b3b
RO		 5054/* The Solaris 2 ABI requires a plt symbol on all platforms.
5055
5056 Cf. Linker and Libraries Guide, Ch. 2, Link-Editor, Generating the Output
5057 File, p.63. */
84865015 5058#undef elf_backend_want_plt_sym
a6cc6b3b
RO		 5059#define elf_backend_want_plt_sym 1
5060
84865015
NC		 5061#undef elf_backend_strtab_flags
5062#define elf_backend_strtab_flags SHF_STRINGS
5063
5064static bfd_boolean
5522f910
NC		 5065elf64_x86_64_copy_solaris_special_section_fields (const bfd *ibfd ATTRIBUTE_UNUSED,
5066 bfd *obfd ATTRIBUTE_UNUSED,
5067 const Elf_Internal_Shdr *isection ATTRIBUTE_UNUSED,
5068 Elf_Internal_Shdr *osection ATTRIBUTE_UNUSED)
84865015
NC		 5069{
5070 /* PR 19938: FIXME: Need to add code for setting the sh_info
5071 and sh_link fields of Solaris specific section types. */
5072 return FALSE;
5073}
5074
5522f910
NC		 5075#undef elf_backend_copy_special_section_fields
5076#define elf_backend_copy_special_section_fields elf64_x86_64_copy_solaris_special_section_fields
84865015 5077
a6cc6b3b
RO		 5078#include "elf64-target.h"
5079
8059fb19
RM		 5080/* Native Client support. */
5081
64b384e1
RM		 5082static bfd_boolean
5083elf64_x86_64_nacl_elf_object_p (bfd *abfd)
5084{
5085 /* Set the right machine number for a NaCl x86-64 ELF64 file. */
5086 bfd_default_set_arch_mach (abfd, bfd_arch_i386, bfd_mach_x86_64_nacl);
5087 return TRUE;
5088}
5089
8059fb19 5090#undef TARGET_LITTLE_SYM
6d00b590 5091#define TARGET_LITTLE_SYM x86_64_elf64_nacl_vec
8059fb19
RM		 5092#undef TARGET_LITTLE_NAME
5093#define TARGET_LITTLE_NAME "elf64-x86-64-nacl"
5094#undef elf64_bed
5095#define elf64_bed elf64_x86_64_nacl_bed
5096
5097#undef ELF_MAXPAGESIZE
5098#undef ELF_MINPAGESIZE
5099#undef ELF_COMMONPAGESIZE
5100#define ELF_MAXPAGESIZE 0x10000
5101#define ELF_MINPAGESIZE 0x10000
5102#define ELF_COMMONPAGESIZE 0x10000
5103
5104/* Restore defaults. */
5105#undef ELF_OSABI
5106#undef elf_backend_static_tls_alignment
5107#undef elf_backend_want_plt_sym
5108#define elf_backend_want_plt_sym 0
84865015 5109#undef elf_backend_strtab_flags
5522f910 5110#undef elf_backend_copy_special_section_fields
8059fb19
RM		 5111
5112/* NaCl uses substantially different PLT entries for the same effects. */
5113
5114#undef elf_backend_plt_alignment
5115#define elf_backend_plt_alignment 5
5116#define NACL_PLT_ENTRY_SIZE 64
5117#define NACLMASK 0xe0 /* 32-byte alignment mask. */
5118
5119static const bfd_byte elf_x86_64_nacl_plt0_entry[NACL_PLT_ENTRY_SIZE] =
5120 {
07d6d2b8 5121 0xff, 0x35, 8, 0, 0, 0, /* pushq GOT+8(%rip) */
8059fb19 5122 0x4c, 0x8b, 0x1d, 16, 0, 0, 0, /* mov GOT+16(%rip), %r11 */
07d6d2b8
AM		 5123 0x41, 0x83, 0xe3, NACLMASK, /* and $-32, %r11d */
5124 0x4d, 0x01, 0xfb, /* add %r15, %r11 */
5125 0x41, 0xff, 0xe3, /* jmpq *%r11 */
8059fb19 5126
ea2d813e 5127 /* 9-byte nop sequence to pad out to the next 32-byte boundary. */
70cc877f 5128 0x66, 0x0f, 0x1f, 0x84, 0, 0, 0, 0, 0, /* nopw 0x0(%rax,%rax,1) */
ea2d813e
RM		 5129
5130 /* 32 bytes of nop to pad out to the standard size. */
3ddf1bdd 5131 0x66, 0x66, 0x66, 0x66, 0x66, 0x66, /* excess data16 prefixes */
8059fb19 5132 0x2e, 0x0f, 0x1f, 0x84, 0, 0, 0, 0, 0, /* nopw %cs:0x0(%rax,%rax,1) */
3ddf1bdd 5133 0x66, 0x66, 0x66, 0x66, 0x66, 0x66, /* excess data16 prefixes */
8059fb19 5134 0x2e, 0x0f, 0x1f, 0x84, 0, 0, 0, 0, 0, /* nopw %cs:0x0(%rax,%rax,1) */
07d6d2b8
AM		 5135 0x66, /* excess data16 prefix */
5136 0x90 /* nop */
8059fb19
RM		 5137 };
5138
5139static const bfd_byte elf_x86_64_nacl_plt_entry[NACL_PLT_ENTRY_SIZE] =
5140 {
5141 0x4c, 0x8b, 0x1d, 0, 0, 0, 0, /* mov name@GOTPCREL(%rip),%r11 */
07d6d2b8
AM		 5142 0x41, 0x83, 0xe3, NACLMASK, /* and $-32, %r11d */
5143 0x4d, 0x01, 0xfb, /* add %r15, %r11 */
5144 0x41, 0xff, 0xe3, /* jmpq *%r11 */
8059fb19
RM		 5145
5146 /* 15-byte nop sequence to pad out to the next 32-byte boundary. */
3ddf1bdd 5147 0x66, 0x66, 0x66, 0x66, 0x66, 0x66, /* excess data16 prefixes */
8059fb19
RM		 5148 0x2e, 0x0f, 0x1f, 0x84, 0, 0, 0, 0, 0, /* nopw %cs:0x0(%rax,%rax,1) */
5149
5150 /* Lazy GOT entries point here (32-byte aligned). */
07d6d2b8
AM		 5151 0x68, /* pushq immediate */
5152 0, 0, 0, 0, /* replaced with index into relocation table. */
5153 0xe9, /* jmp relative */
5154 0, 0, 0, 0, /* replaced with offset to start of .plt0. */
8059fb19 5155
07d6d2b8 5156 /* 22 bytes of nop to pad out to the standard size. */
3ddf1bdd 5157 0x66, 0x66, 0x66, 0x66, 0x66, 0x66, /* excess data16 prefixes */
8059fb19 5158 0x2e, 0x0f, 0x1f, 0x84, 0, 0, 0, 0, 0, /* nopw %cs:0x0(%rax,%rax,1) */
07d6d2b8 5159 0x0f, 0x1f, 0x80, 0, 0, 0, 0, /* nopl 0x0(%rax) */
8059fb19
RM		 5160 };
5161
5162/* .eh_frame covering the .plt section. */
5163
5164static const bfd_byte elf_x86_64_nacl_eh_frame_plt[] =
5165 {
07d6d2b8
AM		 5166#if (PLT_CIE_LENGTH != 20 \
5167 || PLT_FDE_LENGTH != 36 \
5168 || PLT_FDE_START_OFFSET != 4 + PLT_CIE_LENGTH + 8 \
8059fb19 5169 || PLT_FDE_LEN_OFFSET != 4 + PLT_CIE_LENGTH + 12)
851b6fa1 5170# error "Need elf_x86_backend_data parameters for eh_frame_plt offsets!"
8059fb19
RM		 5171#endif
5172 PLT_CIE_LENGTH, 0, 0, 0, /* CIE length */
5173 0, 0, 0, 0, /* CIE ID */
5174 1, /* CIE version */
07d6d2b8 5175 'z', 'R', 0, /* Augmentation string */
8059fb19 5176 1, /* Code alignment factor */
07d6d2b8 5177 0x78, /* Data alignment factor */
8059fb19
RM		 5178 16, /* Return address column */
5179 1, /* Augmentation size */
5180 DW_EH_PE_pcrel | DW_EH_PE_sdata4, /* FDE encoding */
5181 DW_CFA_def_cfa, 7, 8, /* DW_CFA_def_cfa: r7 (rsp) ofs 8 */
5182 DW_CFA_offset + 16, 1, /* DW_CFA_offset: r16 (rip) at cfa-8 */
5183 DW_CFA_nop, DW_CFA_nop,
5184
5185 PLT_FDE_LENGTH, 0, 0, 0, /* FDE length */
5186 PLT_CIE_LENGTH + 8, 0, 0, 0,/* CIE pointer */
5187 0, 0, 0, 0, /* R_X86_64_PC32 .plt goes here */
5188 0, 0, 0, 0, /* .plt size goes here */
5189 0, /* Augmentation size */
5190 DW_CFA_def_cfa_offset, 16, /* DW_CFA_def_cfa_offset: 16 */
5191 DW_CFA_advance_loc + 6, /* DW_CFA_advance_loc: 6 to __PLT__+6 */
5192 DW_CFA_def_cfa_offset, 24, /* DW_CFA_def_cfa_offset: 24 */
5193 DW_CFA_advance_loc + 58, /* DW_CFA_advance_loc: 58 to __PLT__+64 */
5194 DW_CFA_def_cfa_expression, /* DW_CFA_def_cfa_expression */
5195 13, /* Block length */
5196 DW_OP_breg7, 8, /* DW_OP_breg7 (rsp): 8 */
5197 DW_OP_breg16, 0, /* DW_OP_breg16 (rip): 0 */
5198 DW_OP_const1u, 63, DW_OP_and, DW_OP_const1u, 37, DW_OP_ge,
5199 DW_OP_lit3, DW_OP_shl, DW_OP_plus,
5200 DW_CFA_nop, DW_CFA_nop
5201 };
5202
765e526c 5203static const struct elf_x86_lazy_plt_layout elf_x86_64_nacl_plt =
8059fb19 5204 {
07d6d2b8
AM		 5205 elf_x86_64_nacl_plt0_entry, /* plt0_entry */
5206 NACL_PLT_ENTRY_SIZE, /* plt0_entry_size */
5207 elf_x86_64_nacl_plt_entry, /* plt_entry */
5208 NACL_PLT_ENTRY_SIZE, /* plt_entry_size */
5209 2, /* plt0_got1_offset */
5210 9, /* plt0_got2_offset */
5211 13, /* plt0_got2_insn_end */
5212 3, /* plt_got_offset */
5213 33, /* plt_reloc_offset */
5214 38, /* plt_plt_offset */
5215 7, /* plt_got_insn_size */
5216 42, /* plt_plt_insn_end */
5217 32, /* plt_lazy_offset */
5218 elf_x86_64_nacl_plt0_entry, /* pic_plt0_entry */
5219 elf_x86_64_nacl_plt_entry, /* pic_plt_entry */
5220 elf_x86_64_nacl_eh_frame_plt, /* eh_frame_plt */
38b12349
L		 5221 sizeof (elf_x86_64_nacl_eh_frame_plt) /* eh_frame_plt_size */
5222 };
5223
851b6fa1 5224static const struct elf_x86_backend_data elf_x86_64_nacl_arch_bed =
38b12349 5225 {
07d6d2b8 5226 is_nacl /* os */
8059fb19
RM		 5227 };
5228
5229#undef elf_backend_arch_data
5230#define elf_backend_arch_data &elf_x86_64_nacl_arch_bed
5231
64b384e1
RM		 5232#undef elf_backend_object_p
5233#define elf_backend_object_p elf64_x86_64_nacl_elf_object_p
5a68afcf
RM		 5234#undef elf_backend_modify_segment_map
5235#define elf_backend_modify_segment_map nacl_modify_segment_map
5236#undef elf_backend_modify_program_headers
5237#define elf_backend_modify_program_headers nacl_modify_program_headers
887badb3
RM		 5238#undef elf_backend_final_write_processing
5239#define elf_backend_final_write_processing nacl_final_write_processing
5a68afcf 5240
8059fb19
RM		 5241#include "elf64-target.h"
5242
5243/* Native Client x32 support. */
5244
64b384e1
RM		 5245static bfd_boolean
5246elf32_x86_64_nacl_elf_object_p (bfd *abfd)
5247{
5248 /* Set the right machine number for a NaCl x86-64 ELF32 file. */
5249 bfd_default_set_arch_mach (abfd, bfd_arch_i386, bfd_mach_x64_32_nacl);
5250 return TRUE;
5251}
5252
07d6d2b8 5253#undef TARGET_LITTLE_SYM
6d00b590 5254#define TARGET_LITTLE_SYM x86_64_elf32_nacl_vec
07d6d2b8 5255#undef TARGET_LITTLE_NAME
8059fb19
RM		 5256#define TARGET_LITTLE_NAME "elf32-x86-64-nacl"
5257#undef elf32_bed
5258#define elf32_bed elf32_x86_64_nacl_bed
5259
8059fb19
RM		 5260#define bfd_elf32_bfd_reloc_type_lookup \
5261 elf_x86_64_reloc_type_lookup
5262#define bfd_elf32_bfd_reloc_name_lookup \
5263 elf_x86_64_reloc_name_lookup
b7365e5d
L		 5264#define bfd_elf32_get_synthetic_symtab \
5265 elf_x86_64_get_synthetic_symtab
8059fb19
RM		 5266
5267#undef elf_backend_object_p
5268#define elf_backend_object_p \
64b384e1 5269 elf32_x86_64_nacl_elf_object_p
8059fb19
RM		 5270
5271#undef elf_backend_bfd_from_remote_memory
5272#define elf_backend_bfd_from_remote_memory \
5273 _bfd_elf32_bfd_from_remote_memory
5274
5275#undef elf_backend_size_info
5276#define elf_backend_size_info \
5277 _bfd_elf32_size_info
5278
5279#include "elf32-target.h"
5280
5281/* Restore defaults. */
5a68afcf 5282#undef elf_backend_object_p
8059fb19 5283#define elf_backend_object_p elf64_x86_64_elf_object_p
5a68afcf
RM		 5284#undef elf_backend_bfd_from_remote_memory
5285#undef elf_backend_size_info
5286#undef elf_backend_modify_segment_map
5287#undef elf_backend_modify_program_headers
887badb3 5288#undef elf_backend_final_write_processing
8059fb19 5289
8a9036a4
L		 5290/* Intel L1OM support. */
5291
5292static bfd_boolean
5293elf64_l1om_elf_object_p (bfd *abfd)
5294{
5295 /* Set the right machine number for an L1OM elf64 file. */
5296 bfd_default_set_arch_mach (abfd, bfd_arch_l1om, bfd_mach_l1om);
5297 return TRUE;
5298}
5299
5300#undef TARGET_LITTLE_SYM
6d00b590 5301#define TARGET_LITTLE_SYM l1om_elf64_vec
8a9036a4
L		 5302#undef TARGET_LITTLE_NAME
5303#define TARGET_LITTLE_NAME "elf64-l1om"
5304#undef ELF_ARCH
5305#define ELF_ARCH bfd_arch_l1om
5306
5307#undef ELF_MACHINE_CODE
5308#define ELF_MACHINE_CODE EM_L1OM
5309
5310#undef ELF_OSABI
5311
5312#undef elf64_bed
5313#define elf64_bed elf64_l1om_bed
5314
5315#undef elf_backend_object_p
5316#define elf_backend_object_p elf64_l1om_elf_object_p
5317
8059fb19
RM		 5318/* Restore defaults. */
5319#undef ELF_MAXPAGESIZE
5320#undef ELF_MINPAGESIZE
5321#undef ELF_COMMONPAGESIZE
5322#define ELF_MAXPAGESIZE 0x200000
5323#define ELF_MINPAGESIZE 0x1000
5324#define ELF_COMMONPAGESIZE 0x1000
5325#undef elf_backend_plt_alignment
5326#define elf_backend_plt_alignment 4
5327#undef elf_backend_arch_data
5328#define elf_backend_arch_data &elf_x86_64_arch_bed
1a0c107f 5329
8a9036a4
L		 5330#include "elf64-target.h"
5331
5332/* FreeBSD L1OM support. */
5333
5334#undef TARGET_LITTLE_SYM
6d00b590 5335#define TARGET_LITTLE_SYM l1om_elf64_fbsd_vec
8a9036a4
L		 5336#undef TARGET_LITTLE_NAME
5337#define TARGET_LITTLE_NAME "elf64-l1om-freebsd"
5338
5339#undef ELF_OSABI
5340#define ELF_OSABI ELFOSABI_FREEBSD
5341
5342#undef elf64_bed
5343#define elf64_bed elf64_l1om_fbsd_bed
5344
8a9036a4 5345#include "elf64-target.h"
351f65ca 5346
7a9068fe
L		 5347/* Intel K1OM support. */
5348
5349static bfd_boolean
5350elf64_k1om_elf_object_p (bfd *abfd)
5351{
5352 /* Set the right machine number for an K1OM elf64 file. */
5353 bfd_default_set_arch_mach (abfd, bfd_arch_k1om, bfd_mach_k1om);
5354 return TRUE;
5355}
5356
5357#undef TARGET_LITTLE_SYM
6d00b590 5358#define TARGET_LITTLE_SYM k1om_elf64_vec
7a9068fe
L		 5359#undef TARGET_LITTLE_NAME
5360#define TARGET_LITTLE_NAME "elf64-k1om"
5361#undef ELF_ARCH
5362#define ELF_ARCH bfd_arch_k1om
5363
5364#undef ELF_MACHINE_CODE
5365#define ELF_MACHINE_CODE EM_K1OM
5366
5367#undef ELF_OSABI
5368
5369#undef elf64_bed
5370#define elf64_bed elf64_k1om_bed
5371
5372#undef elf_backend_object_p
5373#define elf_backend_object_p elf64_k1om_elf_object_p
5374
5375#undef elf_backend_static_tls_alignment
5376
5377#undef elf_backend_want_plt_sym
5378#define elf_backend_want_plt_sym 0
5379
5380#include "elf64-target.h"
5381
5382/* FreeBSD K1OM support. */
5383
5384#undef TARGET_LITTLE_SYM
6d00b590 5385#define TARGET_LITTLE_SYM k1om_elf64_fbsd_vec
7a9068fe
L		 5386#undef TARGET_LITTLE_NAME
5387#define TARGET_LITTLE_NAME "elf64-k1om-freebsd"
5388
5389#undef ELF_OSABI
5390#define ELF_OSABI ELFOSABI_FREEBSD
5391
5392#undef elf64_bed
5393#define elf64_bed elf64_k1om_fbsd_bed
5394
5395#include "elf64-target.h"
5396
351f65ca
L		 5397/* 32bit x86-64 support. */
5398
351f65ca 5399#undef TARGET_LITTLE_SYM
6d00b590 5400#define TARGET_LITTLE_SYM x86_64_elf32_vec
351f65ca
L		 5401#undef TARGET_LITTLE_NAME
5402#define TARGET_LITTLE_NAME "elf32-x86-64"
8059fb19 5403#undef elf32_bed
351f65ca
L		 5404
5405#undef ELF_ARCH
5406#define ELF_ARCH bfd_arch_i386
5407
5408#undef ELF_MACHINE_CODE
5409#define ELF_MACHINE_CODE EM_X86_64
5410
351f65ca
L		 5411#undef ELF_OSABI
5412
351f65ca
L		 5413#undef elf_backend_object_p
5414#define elf_backend_object_p \
5415 elf32_x86_64_elf_object_p
5416
5417#undef elf_backend_bfd_from_remote_memory
5418#define elf_backend_bfd_from_remote_memory \
5419 _bfd_elf32_bfd_from_remote_memory
5420
5421#undef elf_backend_size_info
5422#define elf_backend_size_info \
5423 _bfd_elf32_size_info
5424
5425#include "elf32-target.h"
GDB Binutils - Deliverables
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