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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
0afcef53 1930 eh = (struct elf_x86_link_hash_entry *) h;
bffbf940 1931 switch (r_type)
70256ad8 1932 {
bffbf940 1933 case R_X86_64_TLSLD:
0f09b4d8 1934 htab->tls_ld_or_ldm_got.refcount = 1;
bffbf940
JJ		 1935 goto create_got;
1936
1937 case R_X86_64_TPOFF32:
0e1862bb 1938 if (!bfd_link_executable (info) && ABI_64_P (abfd))
aab921ad 1939 return elf_x86_64_need_pic (info, abfd, sec, h, symtab_hdr, isym,
338c190a 1940 &x86_64_elf_howto_table[r_type]);
aec6b87e 1941 if (eh != NULL)
98b273dc 1942 eh->zero_undefweak &= 0x2;
bffbf940 1943 break;
c434dee6 1944
bffbf940 1945 case R_X86_64_GOTTPOFF:
0e1862bb 1946 if (!bfd_link_executable (info))
bffbf940
JJ		 1947 info->flags |= DF_STATIC_TLS;
1948 /* Fall through */
70256ad8 1949
bffbf940
JJ		 1950 case R_X86_64_GOT32:
1951 case R_X86_64_GOTPCREL:
56ceb5b5
L		 1952 case R_X86_64_GOTPCRELX:
1953 case R_X86_64_REX_GOTPCRELX:
bffbf940 1954 case R_X86_64_TLSGD:
7b81dfbb
AJ		 1955 case R_X86_64_GOT64:
1956 case R_X86_64_GOTPCREL64:
1957 case R_X86_64_GOTPLT64:
67a4f2b7
AO		 1958 case R_X86_64_GOTPC32_TLSDESC:
1959 case R_X86_64_TLSDESC_CALL:
bffbf940
JJ		 1960 /* This symbol requires a global offset table entry. */
1961 {
1962 int tls_type, old_tls_type;
1963
1964 switch (r_type)
1965 {
1966 default: tls_type = GOT_NORMAL; break;
1967 case R_X86_64_TLSGD: tls_type = GOT_TLS_GD; break;
1968 case R_X86_64_GOTTPOFF: tls_type = GOT_TLS_IE; break;
67a4f2b7
AO		 1969 case R_X86_64_GOTPC32_TLSDESC:
1970 case R_X86_64_TLSDESC_CALL:
1971 tls_type = GOT_TLS_GDESC; break;
bffbf940
JJ		 1972 }
1973
1974 if (h != NULL)
1975 {
0f09b4d8 1976 h->got.refcount = 1;
aec6b87e 1977 old_tls_type = eh->tls_type;
bffbf940
JJ		 1978 }
1979 else
1980 {
1981 bfd_signed_vma *local_got_refcounts;
1982
1983 /* This is a global offset table entry for a local symbol. */
1984 local_got_refcounts = elf_local_got_refcounts (abfd);
1985 if (local_got_refcounts == NULL)
1986 {
1987 bfd_size_type size;
1988
1989 size = symtab_hdr->sh_info;
67a4f2b7
AO		 1990 size *= sizeof (bfd_signed_vma)
1991 + sizeof (bfd_vma) + sizeof (char);
bffbf940
JJ		 1992 local_got_refcounts = ((bfd_signed_vma *)
1993 bfd_zalloc (abfd, size));
1994 if (local_got_refcounts == NULL)
afd9acee 1995 goto error_return;
bffbf940 1996 elf_local_got_refcounts (abfd) = local_got_refcounts;
0afcef53 1997 elf_x86_local_tlsdesc_gotent (abfd)
67a4f2b7 1998 = (bfd_vma *) (local_got_refcounts + symtab_hdr->sh_info);
0afcef53 1999 elf_x86_local_got_tls_type (abfd)
67a4f2b7 2000 = (char *) (local_got_refcounts + 2 * symtab_hdr->sh_info);
bffbf940 2001 }
0f09b4d8 2002 local_got_refcounts[r_symndx] = 1;
bffbf940 2003 old_tls_type
0afcef53 2004 = elf_x86_local_got_tls_type (abfd) [r_symndx];
bffbf940
JJ		 2005 }
2006
2007 /* If a TLS symbol is accessed using IE at least once,
2008 there is no point to use dynamic model for it. */
2009 if (old_tls_type != tls_type && old_tls_type != GOT_UNKNOWN
67a4f2b7
AO		 2010 && (! GOT_TLS_GD_ANY_P (old_tls_type)
2011 || tls_type != GOT_TLS_IE))
bffbf940 2012 {
67a4f2b7 2013 if (old_tls_type == GOT_TLS_IE && GOT_TLS_GD_ANY_P (tls_type))
bffbf940 2014 tls_type = old_tls_type;
67a4f2b7
AO		 2015 else if (GOT_TLS_GD_ANY_P (old_tls_type)
2016 && GOT_TLS_GD_ANY_P (tls_type))
2017 tls_type |= old_tls_type;
bffbf940
JJ		 2018 else
2019 {
09a24cbf 2020 if (h)
4c544807
L		 2021 name = h->root.root.string;
2022 else
2023 name = bfd_elf_sym_name (abfd, symtab_hdr,
2024 isym, NULL);
4eca0228 2025 _bfd_error_handler
695344c0 2026 /* xgettext:c-format */
63a5468a
AM		 2027 (_("%B: '%s' accessed both as normal and"
2028 " thread local symbol"),
4c544807 2029 abfd, name);
68c4a57e 2030 bfd_set_error (bfd_error_bad_value);
afd9acee 2031 goto error_return;
bffbf940
JJ		 2032 }
2033 }
2034
2035 if (old_tls_type != tls_type)
2036 {
aec6b87e
L		 2037 if (eh != NULL)
2038 eh->tls_type = tls_type;
bffbf940 2039 else
0afcef53 2040 elf_x86_local_got_tls_type (abfd) [r_symndx] = tls_type;
bffbf940
JJ		 2041 }
2042 }
c434dee6
AJ		 2043 /* Fall through */
2044
d6ab8113
JB		 2045 case R_X86_64_GOTOFF64:
2046 case R_X86_64_GOTPC32:
7b81dfbb 2047 case R_X86_64_GOTPC64:
bffbf940 2048 create_got:
aec6b87e 2049 if (eh != NULL)
98b273dc 2050 eh->zero_undefweak &= 0x2;
70256ad8
AJ		 2051 break;
2052
2053 case R_X86_64_PLT32:
c3320543 2054 case R_X86_64_PLT32_BND:
70256ad8 2055 /* This symbol requires a procedure linkage table entry. We
407443a3
AJ		 2056 actually build the entry in adjust_dynamic_symbol,
2057 because this might be a case of linking PIC code which is
2058 never referenced by a dynamic object, in which case we
2059 don't need to generate a procedure linkage table entry
2060 after all. */
70256ad8
AJ		 2061
2062 /* If this is a local symbol, we resolve it directly without
407443a3 2063 creating a procedure linkage table entry. */
70256ad8
AJ		 2064 if (h == NULL)
2065 continue;
2066
98b273dc 2067 eh->zero_undefweak &= 0x2;
f5385ebf 2068 h->needs_plt = 1;
79b0c981 2069 h->plt.refcount = 1;
70256ad8
AJ		 2070 break;
2071
7b81dfbb
AJ		 2072 case R_X86_64_PLTOFF64:
2073 /* This tries to form the 'address' of a function relative
2074 to GOT. For global symbols we need a PLT entry. */
2075 if (h != NULL)
2076 {
2077 h->needs_plt = 1;
79b0c981 2078 h->plt.refcount = 1;
7b81dfbb
AJ		 2079 }
2080 goto create_got;
2081
6a3e1bae
L		 2082 case R_X86_64_SIZE32:
2083 case R_X86_64_SIZE64:
06a6a421 2084 size_reloc = TRUE;
6a3e1bae
L		 2085 goto do_size;
2086
248775ba
L		 2087 case R_X86_64_32:
2088 if (!ABI_64_P (abfd))
2089 goto pointer;
1a0670f3 2090 /* Fall through. */
cc78d0af
AJ		 2091 case R_X86_64_8:
2092 case R_X86_64_16:
70256ad8 2093 case R_X86_64_32S:
338c190a
L		 2094 /* Check relocation overflow as these relocs may lead to
2095 run-time relocation overflow. Don't error out for
1b71fb54 2096 sections we don't care about, such as debug sections or
338c190a 2097 when relocation overflow check is disabled. */
4c10bbaa 2098 if (!info->no_reloc_overflow_check
6999821f 2099 && !converted_reloc
338c190a
L		 2100 && (bfd_link_pic (info)
2101 || (bfd_link_executable (info)
2102 && h != NULL
2103 && !h->def_regular
2104 && h->def_dynamic
081b1afe 2105 && (sec->flags & SEC_READONLY) == 0)))
aab921ad 2106 return elf_x86_64_need_pic (info, abfd, sec, h, symtab_hdr, isym,
338c190a 2107 &x86_64_elf_howto_table[r_type]);
1b71fb54
AJ		 2108 /* Fall through. */
2109
c434dee6
AJ		 2110 case R_X86_64_PC8:
2111 case R_X86_64_PC16:
70256ad8 2112 case R_X86_64_PC32:
c3320543 2113 case R_X86_64_PC32_BND:
d6ab8113 2114 case R_X86_64_PC64:
1b71fb54 2115 case R_X86_64_64:
248775ba 2116pointer:
aec6b87e 2117 if (eh != NULL && (sec->flags & SEC_CODE) != 0)
98b273dc 2118 eh->zero_undefweak |= 0x2;
bf52d7c7
L		 2119 /* We are called after all symbols have been resolved. Only
2120 relocation against STT_GNU_IFUNC symbol must go through
2121 PLT. */
d1ed1c7d
L		 2122 if (h != NULL
2123 && (bfd_link_executable (info)
bf52d7c7 2124 || h->type == STT_GNU_IFUNC))
c434dee6 2125 {
79b0c981 2126 bfd_boolean func_pointer_ref = FALSE;
233cc9c1 2127
5db4f0d3
L		 2128 if (r_type == R_X86_64_PC32)
2129 {
2130 /* Since something like ".long foo - ." may be used
2131 as pointer, make sure that PLT is used if foo is
2132 a function defined in a shared library. */
2133 if ((sec->flags & SEC_CODE) == 0)
2134 h->pointer_equality_needed = 1;
2135 }
2136 else if (r_type != R_X86_64_PC32_BND
2137 && r_type != R_X86_64_PC64)
04ebc307
L		 2138 {
2139 h->pointer_equality_needed = 1;
2140 /* At run-time, R_X86_64_64 can be resolved for both
2141 x86-64 and x32. But R_X86_64_32 and R_X86_64_32S
2142 can only be resolved for x32. */
2143 if ((sec->flags & SEC_READONLY) == 0
2144 && (r_type == R_X86_64_64
2145 || (!ABI_64_P (abfd)
2146 && (r_type == R_X86_64_32
2147 || r_type == R_X86_64_32S))))
79b0c981
L		 2148 func_pointer_ref = TRUE;
2149 }
2150
2151 if (!func_pointer_ref)
2152 {
2153 /* If this reloc is in a read-only section, we might
2154 need a copy reloc. We can't check reliably at this
2155 stage whether the section is read-only, as input
2156 sections have not yet been mapped to output sections.
2157 Tentatively set the flag for now, and correct in
2158 adjust_dynamic_symbol. */
2159 h->non_got_ref = 1;
2160
2161 /* We may need a .plt entry if the symbol is a function
2162 defined in a shared lib or is a function referenced
2163 from the code or read-only section. */
2164 if (!h->def_regular
2165 || (sec->flags & (SEC_CODE | SEC_READONLY)) != 0)
2166 h->plt.refcount = 1;
04ebc307 2167 }
c434dee6 2168 }
70256ad8 2169
06a6a421 2170 size_reloc = FALSE;
6a3e1bae 2171do_size:
daf1c414
L		 2172 if (NEED_DYNAMIC_RELOCATION_P (info, h, sec, r_type,
2173 htab->pointer_r_type))
70256ad8 2174 {
e03a8ed8
L		 2175 struct elf_dyn_relocs *p;
2176 struct elf_dyn_relocs **head;
c434dee6
AJ		 2177
2178 /* We must copy these reloc types into the output file.
2179 Create a reloc section in dynobj and make room for
2180 this reloc. */
70256ad8
AJ		 2181 if (sreloc == NULL)
2182 {
83bac4b0 2183 sreloc = _bfd_elf_make_dynamic_reloc_section
82e96e07
L		 2184 (sec, htab->elf.dynobj, ABI_64_P (abfd) ? 3 : 2,
2185 abfd, /*rela?*/ TRUE);
70256ad8 2186
70256ad8 2187 if (sreloc == NULL)
afd9acee 2188 goto error_return;
70256ad8
AJ		 2189 }
2190
c434dee6
AJ		 2191 /* If this is a global symbol, we count the number of
2192 relocations we need for this symbol. */
2193 if (h != NULL)
aec6b87e 2194 head = &eh->dyn_relocs;
c434dee6
AJ		 2195 else
2196 {
2197 /* Track dynamic relocs needed for local syms too.
2198 We really need local syms available to do this
2199 easily. Oh well. */
c434dee6 2200 asection *s;
87d72d41 2201 void **vpp;
87d72d41
AM		 2202
2203 isym = bfd_sym_from_r_symndx (&htab->sym_cache,
2204 abfd, r_symndx);
2205 if (isym == NULL)
afd9acee 2206 goto error_return;
87d72d41
AM		 2207
2208 s = bfd_section_from_elf_index (abfd, isym->st_shndx);
c434dee6 2209 if (s == NULL)
87d72d41 2210 s = sec;
70256ad8 2211
e81d3500
DD		 2212 /* Beware of type punned pointers vs strict aliasing
2213 rules. */
2214 vpp = &(elf_section_data (s)->local_dynrel);
e03a8ed8 2215 head = (struct elf_dyn_relocs **)vpp;
c434dee6 2216 }
70256ad8 2217
c434dee6
AJ		 2218 p = *head;
2219 if (p == NULL || p->sec != sec)
2220 {
2221 bfd_size_type amt = sizeof *p;
d8045f23 2222
e03a8ed8 2223 p = ((struct elf_dyn_relocs *)
c434dee6 2224 bfd_alloc (htab->elf.dynobj, amt));
70256ad8 2225 if (p == NULL)
afd9acee 2226 goto error_return;
c434dee6
AJ		 2227 p->next = *head;
2228 *head = p;
2229 p->sec = sec;
2230 p->count = 0;
2231 p->pc_count = 0;
70256ad8 2232 }
c434dee6
AJ		 2233
2234 p->count += 1;
06a6a421 2235 /* Count size relocation as PC-relative relocation. */
daf1c414 2236 if (X86_PCREL_TYPE_P (r_type) || size_reloc)
c434dee6 2237 p->pc_count += 1;
70256ad8
AJ		 2238 }
2239 break;
fe4770f4
AJ		 2240
2241 /* This relocation describes the C++ object vtable hierarchy.
2242 Reconstruct it for later use during GC. */
2243 case R_X86_64_GNU_VTINHERIT:
c152c796 2244 if (!bfd_elf_gc_record_vtinherit (abfd, sec, h, rel->r_offset))
afd9acee 2245 goto error_return;
fe4770f4
AJ		 2246 break;
2247
2248 /* This relocation describes which C++ vtable entries are actually
2249 used. Record for later use during GC. */
2250 case R_X86_64_GNU_VTENTRY:
d17e0c6e
JB		 2251 BFD_ASSERT (h != NULL);
2252 if (h != NULL
2253 && !bfd_elf_gc_record_vtentry (abfd, sec, h, rel->r_addend))
afd9acee 2254 goto error_return;
fe4770f4 2255 break;
c434dee6
AJ		 2256
2257 default:
2258 break;
70256ad8
AJ		 2259 }
2260 }
2261
bedfd056
L		 2262 if (elf_section_data (sec)->this_hdr.contents != contents)
2263 {
5e5e02ae 2264 if (!converted && !info->keep_memory)
bedfd056
L		 2265 free (contents);
2266 else
2267 {
5e5e02ae
L		 2268 /* Cache the section contents for elf_link_input_bfd if any
2269 load is converted or --no-keep-memory isn't used. */
bedfd056
L		 2270 elf_section_data (sec)->this_hdr.contents = contents;
2271 }
2272 }
2273
5e5e02ae
L		 2274 /* Cache relocations if any load is converted. */
2275 if (elf_section_data (sec)->relocs != relocs && converted)
2276 elf_section_data (sec)->relocs = (Elf_Internal_Rela *) relocs;
2277
b34976b6 2278 return TRUE;
afd9acee
L		 2279
2280error_return:
bedfd056
L		 2281 if (elf_section_data (sec)->this_hdr.contents != contents)
2282 free (contents);
afd9acee
L		 2283 sec->check_relocs_failed = 1;
2284 return FALSE;
70256ad8
AJ		 2285}
2286
bffbf940
JJ		 2287/* Return the relocation value for @tpoff relocation
2288 if STT_TLS virtual address is ADDRESS. */
2289
2290static bfd_vma
351f65ca 2291elf_x86_64_tpoff (struct bfd_link_info *info, bfd_vma address)
bffbf940 2292{
e1918d23 2293 struct elf_link_hash_table *htab = elf_hash_table (info);
7dc98aea
RO		 2294 const struct elf_backend_data *bed = get_elf_backend_data (info->output_bfd);
2295 bfd_vma static_tls_size;
bffbf940
JJ		 2296
2297 /* If tls_segment is NULL, we should have signalled an error already. */
e1918d23 2298 if (htab->tls_sec == NULL)
bffbf940 2299 return 0;
7dc98aea
RO		 2300
2301 /* Consider special static TLS alignment requirements. */
2302 static_tls_size = BFD_ALIGN (htab->tls_size, bed->static_tls_alignment);
2303 return address - static_tls_size - htab->tls_sec->vma;
bffbf940
JJ		 2304}
2305
90f487df
L		 2306/* Is the instruction before OFFSET in CONTENTS a 32bit relative
2307 branch? */
2308
2309static bfd_boolean
2310is_32bit_relative_branch (bfd_byte *contents, bfd_vma offset)
2311{
2312 /* Opcode Instruction
2313 0xe8 call
2314 0xe9 jump
2315 0x0f 0x8x conditional jump */
2316 return ((offset > 0
2317 && (contents [offset - 1] == 0xe8
2318 || contents [offset - 1] == 0xe9))
2319 || (offset > 1
2320 && contents [offset - 2] == 0x0f
2321 && (contents [offset - 1] & 0xf0) == 0x80));
2322}
2323
8d88c4ca
NC		 2324/* Relocate an x86_64 ELF section. */
2325
b34976b6 2326static bfd_boolean
351f65ca
L		 2327elf_x86_64_relocate_section (bfd *output_bfd,
2328 struct bfd_link_info *info,
2329 bfd *input_bfd,
2330 asection *input_section,
2331 bfd_byte *contents,
2332 Elf_Internal_Rela *relocs,
2333 Elf_Internal_Sym *local_syms,
2334 asection **local_sections)
8d88c4ca 2335{
0afcef53 2336 struct elf_x86_link_hash_table *htab;
8d88c4ca
NC		 2337 Elf_Internal_Shdr *symtab_hdr;
2338 struct elf_link_hash_entry **sym_hashes;
2339 bfd_vma *local_got_offsets;
67a4f2b7 2340 bfd_vma *local_tlsdesc_gotents;
c434dee6 2341 Elf_Internal_Rela *rel;
60f2e42e 2342 Elf_Internal_Rela *wrel;
8d88c4ca 2343 Elf_Internal_Rela *relend;
38b12349 2344 unsigned int plt_entry_size;
8d88c4ca 2345
338c190a
L		 2346 /* Skip if check_relocs failed. */
2347 if (input_section->check_relocs_failed)
2348 return FALSE;
2349
0afcef53 2350 htab = elf_x86_hash_table (info, X86_64_ELF_DATA);
4dfe6ac6
NC		 2351 if (htab == NULL)
2352 return FALSE;
fe53b4a4
L		 2353
2354 BFD_ASSERT (is_x86_elf (input_bfd, htab));
2355
765e526c 2356 plt_entry_size = htab->plt.plt_entry_size;
0ffa91dd 2357 symtab_hdr = &elf_symtab_hdr (input_bfd);
8d88c4ca
NC		 2358 sym_hashes = elf_sym_hashes (input_bfd);
2359 local_got_offsets = elf_local_got_offsets (input_bfd);
0afcef53 2360 local_tlsdesc_gotents = elf_x86_local_tlsdesc_gotent (input_bfd);
8d88c4ca 2361
0afcef53 2362 _bfd_x86_elf_set_tls_module_base (info);
9f03412a 2363
60f2e42e 2364 rel = wrel = relocs;
8d88c4ca 2365 relend = relocs + input_section->reloc_count;
60f2e42e 2366 for (; rel < relend; wrel++, rel++)
8d88c4ca 2367 {
419414ea 2368 unsigned int r_type, r_type_tls;
8d88c4ca
NC		 2369 reloc_howto_type *howto;
2370 unsigned long r_symndx;
2371 struct elf_link_hash_entry *h;
0afcef53 2372 struct elf_x86_link_hash_entry *eh;
8d88c4ca
NC		 2373 Elf_Internal_Sym *sym;
2374 asection *sec;
0ff2b86e 2375 bfd_vma off, offplt, plt_offset;
8d88c4ca 2376 bfd_vma relocation;
b34976b6 2377 bfd_boolean unresolved_reloc;
8d88c4ca 2378 bfd_reloc_status_type r;
bffbf940 2379 int tls_type;
0ff2b86e 2380 asection *base_got, *resolved_plt;
1788fc08 2381 bfd_vma st_size;
aec6b87e 2382 bfd_boolean resolved_to_zero;
9e9821dd 2383 bfd_boolean relative_reloc;
78984959 2384 bfd_boolean converted_reloc;
aebcc8ff 2385 bfd_boolean need_copy_reloc_in_pie;
8d88c4ca 2386
351f65ca 2387 r_type = ELF32_R_TYPE (rel->r_info);
fe4770f4
AJ		 2388 if (r_type == (int) R_X86_64_GNU_VTINHERIT
2389 || r_type == (int) R_X86_64_GNU_VTENTRY)
18954b29
L		 2390 {
2391 if (wrel != rel)
2392 *wrel = *rel;
2393 continue;
2394 }
8d88c4ca 2395
78984959
L		 2396 converted_reloc = (r_type & R_X86_64_converted_reloc_bit) != 0;
2397 r_type &= ~R_X86_64_converted_reloc_bit;
2398
9911c0fc 2399 if (r_type >= (int) R_X86_64_standard)
47aeb64c 2400 return _bfd_unrecognized_reloc (input_bfd, input_section, r_type);
8d88c4ca 2401
d7921315 2402 if (r_type != (int) R_X86_64_32
eed180f8 2403 || ABI_64_P (output_bfd))
d7921315
L		 2404 howto = x86_64_elf_howto_table + r_type;
2405 else
2406 howto = (x86_64_elf_howto_table
2407 + ARRAY_SIZE (x86_64_elf_howto_table) - 1);
351f65ca 2408 r_symndx = htab->r_sym (rel->r_info);
8d88c4ca
NC		 2409 h = NULL;
2410 sym = NULL;
2411 sec = NULL;
b34976b6 2412 unresolved_reloc = FALSE;
8d88c4ca 2413 if (r_symndx < symtab_hdr->sh_info)
8da6118f
KH		 2414 {
2415 sym = local_syms + r_symndx;
2416 sec = local_sections[r_symndx];
c434dee6 2417
c25bc9fc
L		 2418 relocation = _bfd_elf_rela_local_sym (output_bfd, sym,
2419 &sec, rel);
1788fc08 2420 st_size = sym->st_size;
c25bc9fc
L		 2421
2422 /* Relocate against local STT_GNU_IFUNC symbol. */
0e1862bb 2423 if (!bfd_link_relocatable (info)
351f65ca 2424 && ELF_ST_TYPE (sym->st_info) == STT_GNU_IFUNC)
c25bc9fc 2425 {
0afcef53
L		 2426 h = _bfd_elf_x86_get_local_sym_hash (htab, input_bfd,
2427 rel, FALSE);
c25bc9fc
L		 2428 if (h == NULL)
2429 abort ();
2430
eed180f8 2431 /* Set STT_GNU_IFUNC symbol value. */
c25bc9fc
L		 2432 h->root.u.def.value = sym->st_value;
2433 h->root.u.def.section = sec;
2434 }
8da6118f 2435 }
8d88c4ca 2436 else
8da6118f 2437 {
c9736ba0 2438 bfd_boolean warned ATTRIBUTE_UNUSED;
62d887d4 2439 bfd_boolean ignored ATTRIBUTE_UNUSED;
c434dee6 2440
b2a8e766
AM		 2441 RELOC_FOR_GLOBAL_SYMBOL (info, input_bfd, input_section, rel,
2442 r_symndx, symtab_hdr, sym_hashes,
2443 h, sec, relocation,
62d887d4 2444 unresolved_reloc, warned, ignored);
1788fc08 2445 st_size = h->size;
8da6118f 2446 }
ab96bf03 2447
dbaa2011 2448 if (sec != NULL && discarded_section (sec))
60f2e42e
L		 2449 {
2450 _bfd_clear_contents (howto, input_bfd, input_section,
2451 contents + rel->r_offset);
2452 wrel->r_offset = rel->r_offset;
2453 wrel->r_info = 0;
2454 wrel->r_addend = 0;
2455
2456 /* For ld -r, remove relocations in debug sections against
2457 sections defined in discarded sections. Not done for
2458 eh_frame editing code expects to be present. */
2459 if (bfd_link_relocatable (info)
2460 && (input_section->flags & SEC_DEBUGGING))
2461 wrel--;
2462
2463 continue;
2464 }
ab96bf03 2465
0e1862bb 2466 if (bfd_link_relocatable (info))
2d5da473
L		 2467 {
2468 if (wrel != rel)
2469 *wrel = *rel;
2470 continue;
2471 }
ab96bf03 2472
1788fc08 2473 if (rel->r_addend == 0 && !ABI_64_P (output_bfd))
64d25c44 2474 {
1788fc08
L		 2475 if (r_type == R_X86_64_64)
2476 {
2477 /* For x32, treat R_X86_64_64 like R_X86_64_32 and
2478 zero-extend it to 64bit if addend is zero. */
2479 r_type = R_X86_64_32;
2480 memset (contents + rel->r_offset + 4, 0, 4);
2481 }
2482 else if (r_type == R_X86_64_SIZE64)
2483 {
2484 /* For x32, treat R_X86_64_SIZE64 like R_X86_64_SIZE32 and
2485 zero-extend it to 64bit if addend is zero. */
2486 r_type = R_X86_64_SIZE32;
2487 memset (contents + rel->r_offset + 4, 0, 4);
2488 }
64d25c44
L		 2489 }
2490
0afcef53 2491 eh = (struct elf_x86_link_hash_entry *) h;
0ff2b86e 2492
cbe950e9
L		 2493 /* Since STT_GNU_IFUNC symbol must go through PLT, we handle
2494 it here if it is defined in a non-shared object. */
2495 if (h != NULL
2496 && h->type == STT_GNU_IFUNC
2497 && h->def_regular)
2498 {
cbe950e9 2499 bfd_vma plt_index;
4c544807 2500 const char *name;
cbe950e9 2501
97dc35c8
L		 2502 if ((input_section->flags & SEC_ALLOC) == 0)
2503 {
2504 /* Dynamic relocs are not propagated for SEC_DEBUGGING
2505 sections because such sections are not SEC_ALLOC and
2506 thus ld.so will not process them. */
2507 if ((input_section->flags & SEC_DEBUGGING) != 0)
0eace210 2508 continue;
97dc35c8
L		 2509 abort ();
2510 }
233cc9c1
L		 2511
2512 switch (r_type)
2513 {
2514 default:
2515 break;
2516
2517 case R_X86_64_GOTPCREL:
2518 case R_X86_64_GOTPCRELX:
2519 case R_X86_64_REX_GOTPCRELX:
2520 case R_X86_64_GOTPCREL64:
2521 base_got = htab->elf.sgot;
2522 off = h->got.offset;
2523
2524 if (base_got == NULL)
2525 abort ();
2526
2527 if (off == (bfd_vma) -1)
2528 {
2529 /* We can't use h->got.offset here to save state, or
2530 even just remember the offset, as finish_dynamic_symbol
2531 would use that as offset into .got. */
2532
2533 if (h->plt.offset == (bfd_vma) -1)
2534 abort ();
2535
2536 if (htab->elf.splt != NULL)
2537 {
38b12349 2538 plt_index = (h->plt.offset / plt_entry_size
765e526c 2539 - htab->plt.has_plt0);
233cc9c1
L		 2540 off = (plt_index + 3) * GOT_ENTRY_SIZE;
2541 base_got = htab->elf.sgotplt;
2542 }
2543 else
2544 {
2545 plt_index = h->plt.offset / plt_entry_size;
2546 off = plt_index * GOT_ENTRY_SIZE;
2547 base_got = htab->elf.igotplt;
2548 }
2549
2550 if (h->dynindx == -1
2551 || h->forced_local
2552 || info->symbolic)
2553 {
2554 /* This references the local defitionion. We must
2555 initialize this entry in the global offset table.
2556 Since the offset must always be a multiple of 8,
2557 we use the least significant bit to record
2558 whether we have initialized it already.
2559
2560 When doing a dynamic link, we create a .rela.got
2561 relocation entry to initialize the value. This
2562 is done in the finish_dynamic_symbol routine. */
2563 if ((off & 1) != 0)
2564 off &= ~1;
2565 else
2566 {
2567 bfd_put_64 (output_bfd, relocation,
2568 base_got->contents + off);
2569 /* Note that this is harmless for the GOTPLT64
2570 case, as -1 | 1 still is -1. */
2571 h->got.offset |= 1;
2572 }
2573 }
2574 }
2575
2576 relocation = (base_got->output_section->vma
2577 + base_got->output_offset + off);
2578
2579 goto do_relocation;
2580 }
2581
2582 if (h->plt.offset == (bfd_vma) -1)
2583 {
2584 /* Handle static pointers of STT_GNU_IFUNC symbols. */
2585 if (r_type == htab->pointer_r_type
2586 && (input_section->flags & SEC_CODE) == 0)
2587 goto do_ifunc_pointer;
2588 goto bad_ifunc_reloc;
2589 }
cbe950e9
L		 2590
2591 /* STT_GNU_IFUNC symbol must go through PLT. */
0ff2b86e
L		 2592 if (htab->elf.splt != NULL)
2593 {
f2c29a16 2594 if (htab->plt_second != NULL)
0ff2b86e 2595 {
f2c29a16
L		 2596 resolved_plt = htab->plt_second;
2597 plt_offset = eh->plt_second.offset;
0ff2b86e
L		 2598 }
2599 else
2600 {
2601 resolved_plt = htab->elf.splt;
2602 plt_offset = h->plt.offset;
2603 }
2604 }
2605 else
2606 {
2607 resolved_plt = htab->elf.iplt;
2608 plt_offset = h->plt.offset;
2609 }
2610
2611 relocation = (resolved_plt->output_section->vma
2612 + resolved_plt->output_offset + plt_offset);
cbe950e9
L		 2613
2614 switch (r_type)
2615 {
2616 default:
233cc9c1 2617bad_ifunc_reloc:
4c544807
L		 2618 if (h->root.root.string)
2619 name = h->root.root.string;
2620 else
2621 name = bfd_elf_sym_name (input_bfd, symtab_hdr, sym,
2622 NULL);
4eca0228 2623 _bfd_error_handler
695344c0 2624 /* xgettext:c-format */
cbe950e9 2625 (_("%B: relocation %s against STT_GNU_IFUNC "
233cc9c1
L		 2626 "symbol `%s' isn't supported"), input_bfd,
2627 howto->name, name);
cbe950e9
L		 2628 bfd_set_error (bfd_error_bad_value);
2629 return FALSE;
2630
2631 case R_X86_64_32S:
0e1862bb 2632 if (bfd_link_pic (info))
cbe950e9 2633 abort ();
710ab287
L		 2634 goto do_relocation;
2635
248775ba
L		 2636 case R_X86_64_32:
2637 if (ABI_64_P (output_bfd))
2638 goto do_relocation;
17672001 2639 /* FALLTHROUGH */
eed180f8 2640 case R_X86_64_64:
233cc9c1 2641do_ifunc_pointer:
710ab287
L		 2642 if (rel->r_addend != 0)
2643 {
4c544807
L		 2644 if (h->root.root.string)
2645 name = h->root.root.string;
2646 else
2647 name = bfd_elf_sym_name (input_bfd, symtab_hdr,
2648 sym, NULL);
4eca0228 2649 _bfd_error_handler
695344c0 2650 /* xgettext:c-format */
710ab287 2651 (_("%B: relocation %s against STT_GNU_IFUNC "
d42c267e 2652 "symbol `%s' has non-zero addend: %Ld"),
ef77d6af 2653 input_bfd, howto->name, name, rel->r_addend);
710ab287
L		 2654 bfd_set_error (bfd_error_bad_value);
2655 return FALSE;
2656 }
2657
2658 /* Generate dynamic relcoation only when there is a
233cc9c1
L		 2659 non-GOT reference in a shared object or there is no
2660 PLT. */
2661 if ((bfd_link_pic (info) && h->non_got_ref)
2662 || h->plt.offset == (bfd_vma) -1)
710ab287
L		 2663 {
2664 Elf_Internal_Rela outrel;
710ab287
L		 2665 asection *sreloc;
2666
c25bc9fc
L		 2667 /* Need a dynamic relocation to get the real function
2668 address. */
710ab287
L		 2669 outrel.r_offset = _bfd_elf_section_offset (output_bfd,
2670 info,
2671 input_section,
2672 rel->r_offset);
2673 if (outrel.r_offset == (bfd_vma) -1
2674 || outrel.r_offset == (bfd_vma) -2)
2675 abort ();
2676
2677 outrel.r_offset += (input_section->output_section->vma
2678 + input_section->output_offset);
2679
cf1070f1 2680 if (POINTER_LOCAL_IFUNC_P (info, h))
710ab287 2681 {
6322e5c5
L		 2682 info->callbacks->minfo (_("Local IFUNC function `%s' in %B\n"),
2683 h->root.root.string,
2684 h->root.u.def.section->owner);
2685
710ab287 2686 /* This symbol is resolved locally. */
56b8aada
L		 2687 outrel.r_info = htab->r_info (0, R_X86_64_IRELATIVE);
2688 outrel.r_addend = (h->root.u.def.value
2689 + h->root.u.def.section->output_section->vma
2690 + h->root.u.def.section->output_offset);
710ab287
L		 2691 }
2692 else
2693 {
351f65ca 2694 outrel.r_info = htab->r_info (h->dynindx, r_type);
710ab287
L		 2695 outrel.r_addend = 0;
2696 }
2697
233cc9c1
L		 2698 /* Dynamic relocations are stored in
2699 1. .rela.ifunc section in PIC object.
2700 2. .rela.got section in dynamic executable.
2701 3. .rela.iplt section in static executable. */
2702 if (bfd_link_pic (info))
2703 sreloc = htab->elf.irelifunc;
2704 else if (htab->elf.splt != NULL)
2705 sreloc = htab->elf.srelgot;
2706 else
2707 sreloc = htab->elf.irelplt;
351f65ca 2708 elf_append_rela (output_bfd, sreloc, &outrel);
710ab287
L		 2709
2710 /* If this reloc is against an external symbol, we
2711 do not want to fiddle with the addend. Otherwise,
2712 we need to include the symbol value so that it
2713 becomes an addend for the dynamic reloc. For an
2714 internal symbol, we have updated addend. */
56b8aada 2715 continue;
710ab287 2716 }
17672001 2717 /* FALLTHROUGH */
cbe950e9 2718 case R_X86_64_PC32:
c3320543 2719 case R_X86_64_PC32_BND:
cbe950e9
L		 2720 case R_X86_64_PC64:
2721 case R_X86_64_PLT32:
c3320543 2722 case R_X86_64_PLT32_BND:
cbe950e9 2723 goto do_relocation;
cbe950e9
L		 2724 }
2725 }
2726
aec6b87e 2727 resolved_to_zero = (eh != NULL
c5bce5c6 2728 && UNDEFINED_WEAK_RESOLVED_TO_ZERO (info, eh));
aec6b87e 2729
70256ad8
AJ		 2730 /* When generating a shared object, the relocations handled here are
2731 copied into the output file to be resolved at run time. */
2732 switch (r_type)
2733 {
2734 case R_X86_64_GOT32:
7b81dfbb 2735 case R_X86_64_GOT64:
70256ad8
AJ		 2736 /* Relocation is to the entry for this symbol in the global
2737 offset table. */
70256ad8 2738 case R_X86_64_GOTPCREL:
56ceb5b5
L		 2739 case R_X86_64_GOTPCRELX:
2740 case R_X86_64_REX_GOTPCRELX:
7b81dfbb
AJ		 2741 case R_X86_64_GOTPCREL64:
2742 /* Use global offset table entry as symbol value. */
2743 case R_X86_64_GOTPLT64:
de194d85 2744 /* This is obsolete and treated the same as GOT64. */
6de2ae4a 2745 base_got = htab->elf.sgot;
7b81dfbb 2746
6de2ae4a 2747 if (htab->elf.sgot == NULL)
c434dee6 2748 abort ();
053579d7 2749
9e9821dd 2750 relative_reloc = FALSE;
51e0a107 2751 if (h != NULL)
70256ad8 2752 {
c434dee6 2753 off = h->got.offset;
7b81dfbb 2754 if (h->needs_plt
eed180f8 2755 && h->plt.offset != (bfd_vma)-1
7b81dfbb
AJ		 2756 && off == (bfd_vma)-1)
2757 {
2758 /* We can't use h->got.offset here to save
2759 state, or even just remember the offset, as
2760 finish_dynamic_symbol would use that as offset into
2761 .got. */
38b12349 2762 bfd_vma plt_index = (h->plt.offset / plt_entry_size
765e526c 2763 - htab->plt.has_plt0);
7b81dfbb 2764 off = (plt_index + 3) * GOT_ENTRY_SIZE;
6de2ae4a 2765 base_got = htab->elf.sgotplt;
7b81dfbb
AJ		 2766 }
2767
2eba97c2 2768 if (RESOLVED_LOCALLY_P (info, h, htab))
51e0a107 2769 {
2eba97c2
L		 2770 /* We must initialize this entry in the global offset
2771 table. Since the offset must always be a multiple
2772 of 8, we use the least significant bit to record
2773 whether we have initialized it already.
51e0a107
JH		 2774
2775 When doing a dynamic link, we create a .rela.got
407443a3
AJ		 2776 relocation entry to initialize the value. This is
2777 done in the finish_dynamic_symbol routine. */
51e0a107
JH		 2778 if ((off & 1) != 0)
2779 off &= ~1;
2780 else
2781 {
2782 bfd_put_64 (output_bfd, relocation,
7b81dfbb
AJ		 2783 base_got->contents + off);
2784 /* Note that this is harmless for the GOTPLT64 case,
eed180f8 2785 as -1 | 1 still is -1. */
51e0a107 2786 h->got.offset |= 1;
9e9821dd 2787
f70656b2 2788 if (GENERATE_RELATIVE_RELOC_P (info, h))
9e9821dd
L		 2789 {
2790 /* If this symbol isn't dynamic in PIC,
2791 generate R_X86_64_RELATIVE here. */
2792 eh->no_finish_dynamic_symbol = 1;
2793 relative_reloc = TRUE;
2794 }
51e0a107
JH		 2795 }
2796 }
053579d7 2797 else
b34976b6 2798 unresolved_reloc = FALSE;
70256ad8 2799 }
51e0a107
JH		 2800 else
2801 {
c434dee6
AJ		 2802 if (local_got_offsets == NULL)
2803 abort ();
51e0a107
JH		 2804
2805 off = local_got_offsets[r_symndx];
2806
2807 /* The offset must always be a multiple of 8. We use
407443a3
AJ		 2808 the least significant bit to record whether we have
2809 already generated the necessary reloc. */
51e0a107
JH		 2810 if ((off & 1) != 0)
2811 off &= ~1;
2812 else
2813 {
c434dee6 2814 bfd_put_64 (output_bfd, relocation,
7b81dfbb 2815 base_got->contents + off);
9e9821dd 2816 local_got_offsets[r_symndx] |= 1;
51e0a107 2817
0e1862bb 2818 if (bfd_link_pic (info))
9e9821dd 2819 relative_reloc = TRUE;
51e0a107 2820 }
51e0a107 2821 }
6a2bda3f 2822
9e9821dd
L		 2823 if (relative_reloc)
2824 {
2825 asection *s;
2826 Elf_Internal_Rela outrel;
2827
2828 /* We need to generate a R_X86_64_RELATIVE reloc
2829 for the dynamic linker. */
2830 s = htab->elf.srelgot;
2831 if (s == NULL)
2832 abort ();
2833
2834 outrel.r_offset = (base_got->output_section->vma
2835 + base_got->output_offset
2836 + off);
2837 outrel.r_info = htab->r_info (0, R_X86_64_RELATIVE);
2838 outrel.r_addend = relocation;
2839 elf_append_rela (output_bfd, s, &outrel);
2840 }
2841
c434dee6
AJ		 2842 if (off >= (bfd_vma) -2)
2843 abort ();
2844
7b81dfbb
AJ		 2845 relocation = base_got->output_section->vma
2846 + base_got->output_offset + off;
56ceb5b5
L		 2847 if (r_type != R_X86_64_GOTPCREL
2848 && r_type != R_X86_64_GOTPCRELX
2849 && r_type != R_X86_64_REX_GOTPCRELX
2850 && r_type != R_X86_64_GOTPCREL64)
6de2ae4a
L		 2851 relocation -= htab->elf.sgotplt->output_section->vma
2852 - htab->elf.sgotplt->output_offset;
c434dee6 2853
70256ad8
AJ		 2854 break;
2855
d6ab8113
JB		 2856 case R_X86_64_GOTOFF64:
2857 /* Relocation is relative to the start of the global offset
2858 table. */
2859
3d949995
L		 2860 /* Check to make sure it isn't a protected function or data
2861 symbol for shared library since it may not be local when
e3c0e327
L		 2862 used as function address or with copy relocation. We also
2863 need to make sure that a symbol is referenced locally. */
0e1862bb 2864 if (bfd_link_pic (info) && h)
d6ab8113 2865 {
e3c0e327
L		 2866 if (!h->def_regular)
2867 {
2868 const char *v;
2869
2870 switch (ELF_ST_VISIBILITY (h->other))
2871 {
2872 case STV_HIDDEN:
2873 v = _("hidden symbol");
2874 break;
2875 case STV_INTERNAL:
2876 v = _("internal symbol");
2877 break;
2878 case STV_PROTECTED:
2879 v = _("protected symbol");
2880 break;
2881 default:
2882 v = _("symbol");
2883 break;
2884 }
2885
4eca0228 2886 _bfd_error_handler
695344c0 2887 /* xgettext:c-format */
63a5468a
AM		 2888 (_("%B: relocation R_X86_64_GOTOFF64 against undefined %s"
2889 " `%s' can not be used when making a shared object"),
e3c0e327
L		 2890 input_bfd, v, h->root.root.string);
2891 bfd_set_error (bfd_error_bad_value);
2892 return FALSE;
2893 }
0e1862bb 2894 else if (!bfd_link_executable (info)
6999821f 2895 && !SYMBOL_REFERENCES_LOCAL_P (info, h)
e3c0e327
L		 2896 && (h->type == STT_FUNC
2897 || h->type == STT_OBJECT)
2898 && ELF_ST_VISIBILITY (h->other) == STV_PROTECTED)
2899 {
4eca0228 2900 _bfd_error_handler
695344c0 2901 /* xgettext:c-format */
63a5468a
AM		 2902 (_("%B: relocation R_X86_64_GOTOFF64 against protected %s"
2903 " `%s' can not be used when making a shared object"),
e3c0e327
L		 2904 input_bfd,
2905 h->type == STT_FUNC ? "function" : "data",
2906 h->root.root.string);
2907 bfd_set_error (bfd_error_bad_value);
d6ab8113 2908 return FALSE;
e3c0e327 2909 }
d6ab8113
JB		 2910 }
2911
2912 /* Note that sgot is not involved in this
2913 calculation. We always want the start of .got.plt. If we
2914 defined _GLOBAL_OFFSET_TABLE_ in a different way, as is
2915 permitted by the ABI, we might have to change this
2916 calculation. */
6de2ae4a
L		 2917 relocation -= htab->elf.sgotplt->output_section->vma
2918 + htab->elf.sgotplt->output_offset;
d6ab8113
JB		 2919 break;
2920
2921 case R_X86_64_GOTPC32:
7b81dfbb 2922 case R_X86_64_GOTPC64:
d6ab8113 2923 /* Use global offset table as symbol value. */
6de2ae4a
L		 2924 relocation = htab->elf.sgotplt->output_section->vma
2925 + htab->elf.sgotplt->output_offset;
d6ab8113
JB		 2926 unresolved_reloc = FALSE;
2927 break;
7b81dfbb
AJ		 2928
2929 case R_X86_64_PLTOFF64:
2930 /* Relocation is PLT entry relative to GOT. For local
2931 symbols it's the symbol itself relative to GOT. */
eed180f8 2932 if (h != NULL
7b81dfbb 2933 /* See PLT32 handling. */
9d734efa
L		 2934 && (h->plt.offset != (bfd_vma) -1
2935 || eh->plt_got.offset != (bfd_vma) -1)
6de2ae4a 2936 && htab->elf.splt != NULL)
7b81dfbb 2937 {
9d734efa
L		 2938 if (eh->plt_got.offset != (bfd_vma) -1)
2939 {
2940 /* Use the GOT PLT. */
2941 resolved_plt = htab->plt_got;
2942 plt_offset = eh->plt_got.offset;
2943 }
f2c29a16 2944 else if (htab->plt_second != NULL)
0ff2b86e 2945 {
f2c29a16
L		 2946 resolved_plt = htab->plt_second;
2947 plt_offset = eh->plt_second.offset;
0ff2b86e
L		 2948 }
2949 else
2950 {
2951 resolved_plt = htab->elf.splt;
2952 plt_offset = h->plt.offset;
2953 }
2954
2955 relocation = (resolved_plt->output_section->vma
2956 + resolved_plt->output_offset
2957 + plt_offset);
7b81dfbb
AJ		 2958 unresolved_reloc = FALSE;
2959 }
2960
6de2ae4a
L		 2961 relocation -= htab->elf.sgotplt->output_section->vma
2962 + htab->elf.sgotplt->output_offset;
7b81dfbb 2963 break;
d6ab8113 2964
70256ad8 2965 case R_X86_64_PLT32:
c3320543 2966 case R_X86_64_PLT32_BND:
70256ad8
AJ		 2967 /* Relocation is to the entry for this symbol in the
2968 procedure linkage table. */
2969
2970 /* Resolve a PLT32 reloc against a local symbol directly,
407443a3 2971 without using the procedure linkage table. */
70256ad8
AJ		 2972 if (h == NULL)
2973 break;
2974
dd7e64d4
L		 2975 if ((h->plt.offset == (bfd_vma) -1
2976 && eh->plt_got.offset == (bfd_vma) -1)
6de2ae4a 2977 || htab->elf.splt == NULL)
70256ad8
AJ		 2978 {
2979 /* We didn't make a PLT entry for this symbol. This
407443a3
AJ		 2980 happens when statically linking PIC code, or when
2981 using -Bsymbolic. */
70256ad8
AJ		 2982 break;
2983 }
2984
dd7e64d4 2985 if (h->plt.offset != (bfd_vma) -1)
0ff2b86e 2986 {
f2c29a16 2987 if (htab->plt_second != NULL)
dd7e64d4 2988 {
f2c29a16
L		 2989 resolved_plt = htab->plt_second;
2990 plt_offset = eh->plt_second.offset;
dd7e64d4
L		 2991 }
2992 else
2993 {
2994 resolved_plt = htab->elf.splt;
2995 plt_offset = h->plt.offset;
2996 }
0ff2b86e
L		 2997 }
2998 else
2999 {
dd7e64d4
L		 3000 /* Use the GOT PLT. */
3001 resolved_plt = htab->plt_got;
3002 plt_offset = eh->plt_got.offset;
0ff2b86e
L		 3003 }
3004
3005 relocation = (resolved_plt->output_section->vma
3006 + resolved_plt->output_offset
3007 + plt_offset);
b34976b6 3008 unresolved_reloc = FALSE;
70256ad8
AJ		 3009 break;
3010
1788fc08
L		 3011 case R_X86_64_SIZE32:
3012 case R_X86_64_SIZE64:
1788fc08
L		 3013 /* Set to symbol size. */
3014 relocation = st_size;
3015 goto direct;
3016
fd8ab9e5
AJ		 3017 case R_X86_64_PC8:
3018 case R_X86_64_PC16:
3019 case R_X86_64_PC32:
c3320543 3020 case R_X86_64_PC32_BND:
6333bc0d 3021 /* Don't complain about -fPIC if the symbol is undefined when
7073b5b9
L		 3022 building executable unless it is unresolved weak symbol or
3023 -z nocopyreloc is used. */
07d6d2b8 3024 if ((input_section->flags & SEC_ALLOC) != 0
90f487df 3025 && (input_section->flags & SEC_READONLY) != 0
6333bc0d 3026 && h != NULL
aec6b87e 3027 && ((bfd_link_executable (info)
7073b5b9
L		 3028 && ((h->root.type == bfd_link_hash_undefweak
3029 && !resolved_to_zero)
a5b4ee94
L		 3030 || ((info->nocopyreloc
3031 || (eh->def_protected
3032 && elf_has_no_copy_on_protected (h->root.u.def.section->owner)))
7073b5b9
L		 3033 && h->def_dynamic
3034 && !(h->root.u.def.section->flags & SEC_CODE))))
c5bb8910 3035 || bfd_link_dll (info)))
6610a52d 3036 {
41bed6dd
L		 3037 bfd_boolean fail = FALSE;
3038 bfd_boolean branch
c3320543
L		 3039 = ((r_type == R_X86_64_PC32
3040 || r_type == R_X86_64_PC32_BND)
41bed6dd
L		 3041 && is_32bit_relative_branch (contents, rel->r_offset));
3042
6999821f 3043 if (SYMBOL_REFERENCES_LOCAL_P (info, h))
41bed6dd
L		 3044 {
3045 /* Symbol is referenced locally. Make sure it is
3046 defined locally or for a branch. */
8170f769
L		 3047 fail = (!(h->def_regular || ELF_COMMON_DEF_P (h))
3048 && !branch);
41bed6dd 3049 }
aec6b87e 3050 else if (!(bfd_link_pie (info)
bc696fd5 3051 && (h->needs_copy || eh->needs_copy)))
41bed6dd 3052 {
9a926d55
L		 3053 /* Symbol doesn't need copy reloc and isn't referenced
3054 locally. We only allow branch to symbol with
3055 non-default visibility. */
41bed6dd
L		 3056 fail = (!branch
3057 || ELF_ST_VISIBILITY (h->other) == STV_DEFAULT);
3058 }
3059
3060 if (fail)
aab921ad 3061 return elf_x86_64_need_pic (info, input_bfd, input_section,
338c190a 3062 h, NULL, NULL, howto);
6610a52d
L		 3063 }
3064 /* Fall through. */
3065
70256ad8
AJ		 3066 case R_X86_64_8:
3067 case R_X86_64_16:
3068 case R_X86_64_32:
d6ab8113 3069 case R_X86_64_PC64:
6b3db546 3070 case R_X86_64_64:
80643fbc 3071 /* FIXME: The ABI says the linker should make sure the value is
407443a3 3072 the same when it's zeroextended to 64 bit. */
c434dee6 3073
1788fc08 3074direct:
b1e24c02 3075 if ((input_section->flags & SEC_ALLOC) == 0)
c434dee6
AJ		 3076 break;
3077
aebcc8ff
L		 3078 need_copy_reloc_in_pie = (bfd_link_pie (info)
3079 && h != NULL
3080 && (h->needs_copy
3081 || eh->needs_copy
3082 || (h->root.type
3083 == bfd_link_hash_undefined))
3084 && (X86_PCREL_TYPE_P (r_type)
3085 || X86_SIZE_TYPE_P (r_type)));
3086
3087 if (GENERATE_DYNAMIC_RELOCATION_P (info, eh, r_type,
3088 need_copy_reloc_in_pie,
3089 resolved_to_zero, FALSE))
70256ad8
AJ		 3090 {
3091 Elf_Internal_Rela outrel;
b34976b6 3092 bfd_boolean skip, relocate;
c434dee6 3093 asection *sreloc;
70256ad8
AJ		 3094
3095 /* When generating a shared object, these relocations
3096 are copied into the output file to be resolved at run
407443a3 3097 time. */
b34976b6
AM		 3098 skip = FALSE;
3099 relocate = FALSE;
70256ad8 3100
c629eae0
JJ		 3101 outrel.r_offset =
3102 _bfd_elf_section_offset (output_bfd, info, input_section,
c434dee6 3103 rel->r_offset);
c629eae0 3104 if (outrel.r_offset == (bfd_vma) -1)
b34976b6 3105 skip = TRUE;
0fb19cbc 3106 else if (outrel.r_offset == (bfd_vma) -2)
b34976b6 3107 skip = TRUE, relocate = TRUE;
70256ad8
AJ		 3108
3109 outrel.r_offset += (input_section->output_section->vma
3110 + input_section->output_offset);
3111
3112 if (skip)
0bb2d96a 3113 memset (&outrel, 0, sizeof outrel);
c434dee6 3114
e74399c4 3115 else if (COPY_INPUT_RELOC_P (info, h, r_type))
70256ad8 3116 {
351f65ca 3117 outrel.r_info = htab->r_info (h->dynindx, r_type);
c434dee6 3118 outrel.r_addend = rel->r_addend;
70256ad8
AJ		 3119 }
3120 else
3121 {
4c10bbaa
L		 3122 /* This symbol is local, or marked to become local.
3123 When relocation overflow check is disabled, we
3124 convert R_X86_64_32 to dynamic R_X86_64_RELATIVE. */
3125 if (r_type == htab->pointer_r_type
3126 || (r_type == R_X86_64_32
3127 && info->no_reloc_overflow_check))
607c0e09 3128 {
b34976b6 3129 relocate = TRUE;
351f65ca 3130 outrel.r_info = htab->r_info (0, R_X86_64_RELATIVE);
607c0e09
AS		 3131 outrel.r_addend = relocation + rel->r_addend;
3132 }
64d25c44
L		 3133 else if (r_type == R_X86_64_64
3134 && !ABI_64_P (output_bfd))
3135 {
3136 relocate = TRUE;
3137 outrel.r_info = htab->r_info (0,
3138 R_X86_64_RELATIVE64);
3139 outrel.r_addend = relocation + rel->r_addend;
8cf0d2dd
L		 3140 /* Check addend overflow. */
3141 if ((outrel.r_addend & 0x80000000)
3142 != (rel->r_addend & 0x80000000))
3143 {
3144 const char *name;
268a8d3a 3145 int addend = rel->r_addend;
8cf0d2dd
L		 3146 if (h && h->root.root.string)
3147 name = h->root.root.string;
3148 else
3149 name = bfd_elf_sym_name (input_bfd, symtab_hdr,
3150 sym, NULL);
d42c267e
AM		 3151 _bfd_error_handler
3152 /* xgettext:c-format */
3153 (_("%B: addend %s%#x in relocation %s against "
3154 "symbol `%s' at %#Lx in section `%A' is "
3155 "out of range"),
3156 input_bfd, addend < 0 ? "-" : "", addend,
3157 howto->name, name, rel->r_offset, input_section);
8cf0d2dd
L		 3158 bfd_set_error (bfd_error_bad_value);
3159 return FALSE;
3160 }
64d25c44 3161 }
607c0e09
AS		 3162 else
3163 {
3164 long sindx;
3165
8517fae7 3166 if (bfd_is_abs_section (sec))
607c0e09
AS		 3167 sindx = 0;
3168 else if (sec == NULL || sec->owner == NULL)
3169 {
3170 bfd_set_error (bfd_error_bad_value);
b34976b6 3171 return FALSE;
607c0e09
AS		 3172 }
3173 else
3174 {
3175 asection *osec;
3176
74541ad4
AM		 3177 /* We are turning this relocation into one
3178 against a section symbol. It would be
3179 proper to subtract the symbol's value,
3180 osec->vma, from the emitted reloc addend,
3181 but ld.so expects buggy relocs. */
607c0e09
AS		 3182 osec = sec->output_section;
3183 sindx = elf_section_data (osec)->dynindx;
74541ad4
AM		 3184 if (sindx == 0)
3185 {
3186 asection *oi = htab->elf.text_index_section;
3187 sindx = elf_section_data (oi)->dynindx;
3188 }
3189 BFD_ASSERT (sindx != 0);
607c0e09
AS		 3190 }
3191
351f65ca 3192 outrel.r_info = htab->r_info (sindx, r_type);
607c0e09
AS		 3193 outrel.r_addend = relocation + rel->r_addend;
3194 }
70256ad8
AJ		 3195 }
3196
cbe950e9 3197 sreloc = elf_section_data (input_section)->sreloc;
d8045f23 3198
62d78908
L		 3199 if (sreloc == NULL || sreloc->contents == NULL)
3200 {
3201 r = bfd_reloc_notsupported;
3202 goto check_relocation_error;
3203 }
c434dee6 3204
351f65ca 3205 elf_append_rela (output_bfd, sreloc, &outrel);
70256ad8
AJ		 3206
3207 /* If this reloc is against an external symbol, we do
3208 not want to fiddle with the addend. Otherwise, we
3209 need to include the symbol value so that it becomes
3210 an addend for the dynamic reloc. */
0f88be7a 3211 if (! relocate)
70256ad8
AJ		 3212 continue;
3213 }
3214
3215 break;
3216
bffbf940 3217 case R_X86_64_TLSGD:
67a4f2b7
AO		 3218 case R_X86_64_GOTPC32_TLSDESC:
3219 case R_X86_64_TLSDESC_CALL:
bffbf940 3220 case R_X86_64_GOTTPOFF:
bffbf940
JJ		 3221 tls_type = GOT_UNKNOWN;
3222 if (h == NULL && local_got_offsets)
0afcef53 3223 tls_type = elf_x86_local_got_tls_type (input_bfd) [r_symndx];
bffbf940 3224 else if (h != NULL)
0afcef53 3225 tls_type = elf_x86_hash_entry (h)->tls_type;
142411ca 3226
419414ea 3227 r_type_tls = r_type;
351f65ca
L		 3228 if (! elf_x86_64_tls_transition (info, input_bfd,
3229 input_section, contents,
3230 symtab_hdr, sym_hashes,
419414ea 3231 &r_type_tls, tls_type, rel,
bedfd056 3232 relend, h, r_symndx, TRUE))
534a31f6 3233 return FALSE;
bffbf940 3234
419414ea 3235 if (r_type_tls == R_X86_64_TPOFF32)
bffbf940 3236 {
142411ca
L		 3237 bfd_vma roff = rel->r_offset;
3238
bffbf940 3239 BFD_ASSERT (! unresolved_reloc);
142411ca 3240
419414ea 3241 if (r_type == R_X86_64_TLSGD)
bffbf940 3242 {
52bc799a 3243 /* GD->LE transition. For 64bit, change
e2cbcd91
L		 3244 .byte 0x66; leaq foo@tlsgd(%rip), %rdi
3245 .word 0x6666; rex64; call __tls_get_addr@PLT
3246 or
3247 .byte 0x66; leaq foo@tlsgd(%rip), %rdi
3248 .byte 0x66; rex64
3249 call *__tls_get_addr@GOTPCREL(%rip)
3250 which may be converted to
3251 addr32 call __tls_get_addr
52bc799a 3252 into:
e2cbcd91
L		 3253 movq %fs:0, %rax
3254 leaq foo@tpoff(%rax), %rax
52bc799a 3255 For 32bit, change
e2cbcd91
L		 3256 leaq foo@tlsgd(%rip), %rdi
3257 .word 0x6666; rex64; call __tls_get_addr@PLT
3258 or
3259 leaq foo@tlsgd(%rip), %rdi
3260 .byte 0x66; rex64
3261 call *__tls_get_addr@GOTPCREL(%rip)
3262 which may be converted to
3263 addr32 call __tls_get_addr
52bc799a 3264 into:
e2cbcd91
L		 3265 movl %fs:0, %eax
3266 leaq foo@tpoff(%rax), %rax
5c98a14e 3267 For largepic, change:
e2cbcd91
L		 3268 leaq foo@tlsgd(%rip), %rdi
3269 movabsq $__tls_get_addr@pltoff, %rax
3270 addq %r15, %rax
3271 call *%rax
5c98a14e 3272 into:
e2cbcd91
L		 3273 movq %fs:0, %rax
3274 leaq foo@tpoff(%rax), %rax
3275 nopw 0x0(%rax,%rax,1) */
5c98a14e 3276 int largepic = 0;
e2cbcd91 3277 if (ABI_64_P (output_bfd))
5c98a14e 3278 {
e2cbcd91
L		 3279 if (contents[roff + 5] == 0xb8)
3280 {
3281 memcpy (contents + roff - 3,
3282 "\x64\x48\x8b\x04\x25\0\0\0\0\x48\x8d\x80"
3283 "\0\0\0\0\x66\x0f\x1f\x44\0", 22);
3284 largepic = 1;
3285 }
3286 else
3287 memcpy (contents + roff - 4,
3288 "\x64\x48\x8b\x04\x25\0\0\0\0\x48\x8d\x80\0\0\0",
3289 16);
5c98a14e 3290 }
52bc799a
L		 3291 else
3292 memcpy (contents + roff - 3,
3293 "\x64\x8b\x04\x25\0\0\0\0\x48\x8d\x80\0\0\0",
3294 15);
eb4ff4d6 3295 bfd_put_32 (output_bfd,
351f65ca 3296 elf_x86_64_tpoff (info, relocation),
5c98a14e 3297 contents + roff + 8 + largepic);
e2cbcd91
L		 3298 /* Skip R_X86_64_PC32, R_X86_64_PLT32,
3299 R_X86_64_GOTPCRELX and R_X86_64_PLTOFF64. */
bffbf940 3300 rel++;
60f2e42e 3301 wrel++;
bffbf940
JJ		 3302 continue;
3303 }
419414ea 3304 else if (r_type == R_X86_64_GOTPC32_TLSDESC)
67a4f2b7
AO		 3305 {
3306 /* GDesc -> LE transition.
3307 It's originally something like:
3308 leaq x@tlsdesc(%rip), %rax
3309
3310 Change it to:
c9736ba0 3311 movl $x@tpoff, %rax. */
67a4f2b7 3312
c9736ba0 3313 unsigned int val, type;
67a4f2b7 3314
67a4f2b7 3315 type = bfd_get_8 (input_bfd, contents + roff - 3);
67a4f2b7 3316 val = bfd_get_8 (input_bfd, contents + roff - 1);
67a4f2b7
AO		 3317 bfd_put_8 (output_bfd, 0x48 | ((type >> 2) & 1),
3318 contents + roff - 3);
3319 bfd_put_8 (output_bfd, 0xc7, contents + roff - 2);
3320 bfd_put_8 (output_bfd, 0xc0 | ((val >> 3) & 7),
3321 contents + roff - 1);
eb4ff4d6 3322 bfd_put_32 (output_bfd,
351f65ca 3323 elf_x86_64_tpoff (info, relocation),
67a4f2b7
AO		 3324 contents + roff);
3325 continue;
3326 }
419414ea 3327 else if (r_type == R_X86_64_TLSDESC_CALL)
67a4f2b7
AO		 3328 {
3329 /* GDesc -> LE transition.
3330 It's originally:
3331 call *(%rax)
3332 Turn it into:
142411ca 3333 xchg %ax,%ax. */
10efb593 3334 bfd_put_8 (output_bfd, 0x66, contents + roff);
67a4f2b7
AO		 3335 bfd_put_8 (output_bfd, 0x90, contents + roff + 1);
3336 continue;
3337 }
419414ea 3338 else if (r_type == R_X86_64_GOTTPOFF)
bffbf940 3339 {
bffbf940 3340 /* IE->LE transition:
cf61b747 3341 For 64bit, originally it can be one of:
bffbf940
JJ		 3342 movq foo@gottpoff(%rip), %reg
3343 addq foo@gottpoff(%rip), %reg
3344 We change it into:
3345 movq $foo, %reg
3346 leaq foo(%reg), %reg
cf61b747
L		 3347 addq $foo, %reg.
3348 For 32bit, originally it can be one of:
3349 movq foo@gottpoff(%rip), %reg
3350 addl foo@gottpoff(%rip), %reg
3351 We change it into:
3352 movq $foo, %reg
3353 leal foo(%reg), %reg
3354 addl $foo, %reg. */
142411ca
L		 3355
3356 unsigned int val, type, reg;
3357
cf61b747
L		 3358 if (roff >= 3)
3359 val = bfd_get_8 (input_bfd, contents + roff - 3);
3360 else
3361 val = 0;
142411ca
L		 3362 type = bfd_get_8 (input_bfd, contents + roff - 2);
3363 reg = bfd_get_8 (input_bfd, contents + roff - 1);
bffbf940 3364 reg >>= 3;
bffbf940
JJ		 3365 if (type == 0x8b)
3366 {
3367 /* movq */
3368 if (val == 0x4c)
3369 bfd_put_8 (output_bfd, 0x49,
142411ca 3370 contents + roff - 3);
4a4c5f25
L		 3371 else if (!ABI_64_P (output_bfd) && val == 0x44)
3372 bfd_put_8 (output_bfd, 0x41,
3373 contents + roff - 3);
bffbf940 3374 bfd_put_8 (output_bfd, 0xc7,
142411ca 3375 contents + roff - 2);
bffbf940 3376 bfd_put_8 (output_bfd, 0xc0 | reg,
142411ca 3377 contents + roff - 1);
bffbf940
JJ		 3378 }
3379 else if (reg == 4)
3380 {
cf61b747
L		 3381 /* addq/addl -> addq/addl - addressing with %rsp/%r12
3382 is special */
bffbf940
JJ		 3383 if (val == 0x4c)
3384 bfd_put_8 (output_bfd, 0x49,
142411ca 3385 contents + roff - 3);
4a4c5f25
L		 3386 else if (!ABI_64_P (output_bfd) && val == 0x44)
3387 bfd_put_8 (output_bfd, 0x41,
3388 contents + roff - 3);
bffbf940 3389 bfd_put_8 (output_bfd, 0x81,
142411ca 3390 contents + roff - 2);
bffbf940 3391 bfd_put_8 (output_bfd, 0xc0 | reg,
142411ca 3392 contents + roff - 1);
bffbf940
JJ		 3393 }
3394 else
3395 {
cf61b747 3396 /* addq/addl -> leaq/leal */
bffbf940
JJ		 3397 if (val == 0x4c)
3398 bfd_put_8 (output_bfd, 0x4d,
142411ca 3399 contents + roff - 3);
4a4c5f25
L		 3400 else if (!ABI_64_P (output_bfd) && val == 0x44)
3401 bfd_put_8 (output_bfd, 0x45,
3402 contents + roff - 3);
bffbf940 3403 bfd_put_8 (output_bfd, 0x8d,
142411ca 3404 contents + roff - 2);
bffbf940 3405 bfd_put_8 (output_bfd, 0x80 | reg | (reg << 3),
142411ca 3406 contents + roff - 1);
bffbf940 3407 }
eb4ff4d6 3408 bfd_put_32 (output_bfd,
351f65ca 3409 elf_x86_64_tpoff (info, relocation),
142411ca 3410 contents + roff);
bffbf940
JJ		 3411 continue;
3412 }
142411ca
L		 3413 else
3414 BFD_ASSERT (FALSE);
bffbf940
JJ		 3415 }
3416
6de2ae4a 3417 if (htab->elf.sgot == NULL)
bffbf940
JJ		 3418 abort ();
3419
3420 if (h != NULL)
67a4f2b7
AO		 3421 {
3422 off = h->got.offset;
0afcef53 3423 offplt = elf_x86_hash_entry (h)->tlsdesc_got;
67a4f2b7 3424 }
bffbf940
JJ		 3425 else
3426 {
3427 if (local_got_offsets == NULL)
3428 abort ();
3429
3430 off = local_got_offsets[r_symndx];
67a4f2b7 3431 offplt = local_tlsdesc_gotents[r_symndx];
bffbf940
JJ		 3432 }
3433
3434 if ((off & 1) != 0)
3435 off &= ~1;
26e41594 3436 else
bffbf940
JJ		 3437 {
3438 Elf_Internal_Rela outrel;
bffbf940 3439 int dr_type, indx;
67a4f2b7 3440 asection *sreloc;
bffbf940 3441
6de2ae4a 3442 if (htab->elf.srelgot == NULL)
bffbf940
JJ		 3443 abort ();
3444
67a4f2b7
AO		 3445 indx = h && h->dynindx != -1 ? h->dynindx : 0;
3446
3447 if (GOT_TLS_GDESC_P (tls_type))
3448 {
351f65ca 3449 outrel.r_info = htab->r_info (indx, R_X86_64_TLSDESC);
67a4f2b7 3450 BFD_ASSERT (htab->sgotplt_jump_table_size + offplt
6de2ae4a
L		 3451 + 2 * GOT_ENTRY_SIZE <= htab->elf.sgotplt->size);
3452 outrel.r_offset = (htab->elf.sgotplt->output_section->vma
3453 + htab->elf.sgotplt->output_offset
67a4f2b7
AO		 3454 + offplt
3455 + htab->sgotplt_jump_table_size);
6de2ae4a 3456 sreloc = htab->elf.srelplt;
67a4f2b7 3457 if (indx == 0)
0afcef53 3458 outrel.r_addend = relocation - _bfd_x86_elf_dtpoff_base (info);
67a4f2b7
AO		 3459 else
3460 outrel.r_addend = 0;
351f65ca 3461 elf_append_rela (output_bfd, sreloc, &outrel);
67a4f2b7
AO		 3462 }
3463
6de2ae4a 3464 sreloc = htab->elf.srelgot;
67a4f2b7 3465
6de2ae4a
L		 3466 outrel.r_offset = (htab->elf.sgot->output_section->vma
3467 + htab->elf.sgot->output_offset + off);
bffbf940 3468
67a4f2b7 3469 if (GOT_TLS_GD_P (tls_type))
bffbf940 3470 dr_type = R_X86_64_DTPMOD64;
67a4f2b7
AO		 3471 else if (GOT_TLS_GDESC_P (tls_type))
3472 goto dr_done;
bffbf940
JJ		 3473 else
3474 dr_type = R_X86_64_TPOFF64;
3475
6de2ae4a 3476 bfd_put_64 (output_bfd, 0, htab->elf.sgot->contents + off);
bffbf940 3477 outrel.r_addend = 0;
67a4f2b7
AO		 3478 if ((dr_type == R_X86_64_TPOFF64
3479 || dr_type == R_X86_64_TLSDESC) && indx == 0)
0afcef53 3480 outrel.r_addend = relocation - _bfd_x86_elf_dtpoff_base (info);
351f65ca 3481 outrel.r_info = htab->r_info (indx, dr_type);
bffbf940 3482
351f65ca 3483 elf_append_rela (output_bfd, sreloc, &outrel);
bffbf940 3484
67a4f2b7 3485 if (GOT_TLS_GD_P (tls_type))
bffbf940
JJ		 3486 {
3487 if (indx == 0)
3488 {
d40d037c 3489 BFD_ASSERT (! unresolved_reloc);
bffbf940 3490 bfd_put_64 (output_bfd,
0afcef53 3491 relocation - _bfd_x86_elf_dtpoff_base (info),
6de2ae4a 3492 htab->elf.sgot->contents + off + GOT_ENTRY_SIZE);
bffbf940
JJ		 3493 }
3494 else
3495 {
3496 bfd_put_64 (output_bfd, 0,
6de2ae4a 3497 htab->elf.sgot->contents + off + GOT_ENTRY_SIZE);
351f65ca 3498 outrel.r_info = htab->r_info (indx,
bffbf940
JJ		 3499 R_X86_64_DTPOFF64);
3500 outrel.r_offset += GOT_ENTRY_SIZE;
351f65ca 3501 elf_append_rela (output_bfd, sreloc,
464d3bd4 3502 &outrel);
bffbf940
JJ		 3503 }
3504 }
3505
67a4f2b7 3506 dr_done:
bffbf940
JJ		 3507 if (h != NULL)
3508 h->got.offset |= 1;
3509 else
3510 local_got_offsets[r_symndx] |= 1;
3511 }
3512
67a4f2b7
AO		 3513 if (off >= (bfd_vma) -2
3514 && ! GOT_TLS_GDESC_P (tls_type))
bffbf940 3515 abort ();
419414ea 3516 if (r_type_tls == r_type)
bffbf940 3517 {
67a4f2b7
AO		 3518 if (r_type == R_X86_64_GOTPC32_TLSDESC
3519 || r_type == R_X86_64_TLSDESC_CALL)
6de2ae4a
L		 3520 relocation = htab->elf.sgotplt->output_section->vma
3521 + htab->elf.sgotplt->output_offset
67a4f2b7
AO		 3522 + offplt + htab->sgotplt_jump_table_size;
3523 else
6de2ae4a
L		 3524 relocation = htab->elf.sgot->output_section->vma
3525 + htab->elf.sgot->output_offset + off;
b34976b6 3526 unresolved_reloc = FALSE;
bffbf940 3527 }
142411ca 3528 else
67a4f2b7 3529 {
142411ca 3530 bfd_vma roff = rel->r_offset;
67a4f2b7 3531
419414ea 3532 if (r_type == R_X86_64_TLSGD)
142411ca 3533 {
52bc799a 3534 /* GD->IE transition. For 64bit, change
e2cbcd91
L		 3535 .byte 0x66; leaq foo@tlsgd(%rip), %rdi
3536 .word 0x6666; rex64; call __tls_get_addr@PLT
3537 or
3538 .byte 0x66; leaq foo@tlsgd(%rip), %rdi
3539 .byte 0x66; rex64
3540 call *__tls_get_addr@GOTPCREL(%rip
3541 which may be converted to
3542 addr32 call __tls_get_addr
52bc799a 3543 into:
e2cbcd91
L		 3544 movq %fs:0, %rax
3545 addq foo@gottpoff(%rip), %rax
52bc799a 3546 For 32bit, change
e2cbcd91
L		 3547 leaq foo@tlsgd(%rip), %rdi
3548 .word 0x6666; rex64; call __tls_get_addr@PLT
3549 or
3550 leaq foo@tlsgd(%rip), %rdi
3551 .byte 0x66; rex64;
3552 call *__tls_get_addr@GOTPCREL(%rip)
3553 which may be converted to
3554 addr32 call __tls_get_addr
52bc799a 3555 into:
e2cbcd91
L		 3556 movl %fs:0, %eax
3557 addq foo@gottpoff(%rip), %rax
5c98a14e 3558 For largepic, change:
e2cbcd91
L		 3559 leaq foo@tlsgd(%rip), %rdi
3560 movabsq $__tls_get_addr@pltoff, %rax
3561 addq %r15, %rax
3562 call *%rax
5c98a14e 3563 into:
e2cbcd91
L		 3564 movq %fs:0, %rax
3565 addq foo@gottpoff(%rax), %rax
3566 nopw 0x0(%rax,%rax,1) */
5c98a14e 3567 int largepic = 0;
e2cbcd91 3568 if (ABI_64_P (output_bfd))
5c98a14e 3569 {
e2cbcd91
L		 3570 if (contents[roff + 5] == 0xb8)
3571 {
3572 memcpy (contents + roff - 3,
3573 "\x64\x48\x8b\x04\x25\0\0\0\0\x48\x03\x05"
3574 "\0\0\0\0\x66\x0f\x1f\x44\0", 22);
3575 largepic = 1;
3576 }
3577 else
3578 memcpy (contents + roff - 4,
3579 "\x64\x48\x8b\x04\x25\0\0\0\0\x48\x03\x05\0\0\0",
3580 16);
5c98a14e 3581 }
52bc799a
L		 3582 else
3583 memcpy (contents + roff - 3,
3584 "\x64\x8b\x04\x25\0\0\0\0\x48\x03\x05\0\0\0",
3585 15);
142411ca 3586
6de2ae4a
L		 3587 relocation = (htab->elf.sgot->output_section->vma
3588 + htab->elf.sgot->output_offset + off
142411ca 3589 - roff
5c98a14e 3590 - largepic
142411ca
L		 3591 - input_section->output_section->vma
3592 - input_section->output_offset
3593 - 12);
3594 bfd_put_32 (output_bfd, relocation,
5c98a14e
JJ		 3595 contents + roff + 8 + largepic);
3596 /* Skip R_X86_64_PLT32/R_X86_64_PLTOFF64. */
142411ca 3597 rel++;
60f2e42e 3598 wrel++;
142411ca
L		 3599 continue;
3600 }
419414ea 3601 else if (r_type == R_X86_64_GOTPC32_TLSDESC)
142411ca
L		 3602 {
3603 /* GDesc -> IE transition.
3604 It's originally something like:
3605 leaq x@tlsdesc(%rip), %rax
67a4f2b7 3606
142411ca 3607 Change it to:
c9736ba0 3608 movq x@gottpoff(%rip), %rax # before xchg %ax,%ax. */
67a4f2b7 3609
142411ca
L		 3610 /* Now modify the instruction as appropriate. To
3611 turn a leaq into a movq in the form we use it, it
3612 suffices to change the second byte from 0x8d to
3613 0x8b. */
3614 bfd_put_8 (output_bfd, 0x8b, contents + roff - 2);
3615
3616 bfd_put_32 (output_bfd,
6de2ae4a
L		 3617 htab->elf.sgot->output_section->vma
3618 + htab->elf.sgot->output_offset + off
142411ca
L		 3619 - rel->r_offset
3620 - input_section->output_section->vma
3621 - input_section->output_offset
3622 - 4,
3623 contents + roff);
3624 continue;
3625 }
419414ea 3626 else if (r_type == R_X86_64_TLSDESC_CALL)
142411ca
L		 3627 {
3628 /* GDesc -> IE transition.
3629 It's originally:
3630 call *(%rax)
3631
3632 Change it to:
c9736ba0 3633 xchg %ax, %ax. */
142411ca 3634
142411ca
L		 3635 bfd_put_8 (output_bfd, 0x66, contents + roff);
3636 bfd_put_8 (output_bfd, 0x90, contents + roff + 1);
3637 continue;
3638 }
3639 else
3640 BFD_ASSERT (FALSE);
67a4f2b7 3641 }
bffbf940
JJ		 3642 break;
3643
3644 case R_X86_64_TLSLD:
351f65ca
L		 3645 if (! elf_x86_64_tls_transition (info, input_bfd,
3646 input_section, contents,
3647 symtab_hdr, sym_hashes,
bedfd056
L		 3648 &r_type, GOT_UNKNOWN, rel,
3649 relend, h, r_symndx, TRUE))
142411ca 3650 return FALSE;
a3fadc9a 3651
142411ca
L		 3652 if (r_type != R_X86_64_TLSLD)
3653 {
bffbf940 3654 /* LD->LE transition:
e2cbcd91
L		 3655 leaq foo@tlsld(%rip), %rdi
3656 call __tls_get_addr@PLT
3657 For 64bit, we change it into:
3658 .word 0x6666; .byte 0x66; movq %fs:0, %rax
3659 For 32bit, we change it into:
3660 nopl 0x0(%rax); movl %fs:0, %eax
3661 Or
3662 leaq foo@tlsld(%rip), %rdi;
3663 call *__tls_get_addr@GOTPCREL(%rip)
3664 which may be converted to
3665 addr32 call __tls_get_addr
52bc799a 3666 For 64bit, we change it into:
e2cbcd91 3667 .word 0x6666; .word 0x6666; movq %fs:0, %rax
52bc799a 3668 For 32bit, we change it into:
e2cbcd91 3669 nopw 0x0(%rax); movl %fs:0, %eax
5c98a14e 3670 For largepic, change:
e2cbcd91
L		 3671 leaq foo@tlsgd(%rip), %rdi
3672 movabsq $__tls_get_addr@pltoff, %rax
3673 addq %rbx, %rax
3674 call *%rax
3675 into
3676 data16 data16 data16 nopw %cs:0x0(%rax,%rax,1)
3677 movq %fs:0, %eax */
142411ca
L		 3678
3679 BFD_ASSERT (r_type == R_X86_64_TPOFF32);
e2cbcd91
L		 3680 if (ABI_64_P (output_bfd))
3681 {
3682 if (contents[rel->r_offset + 5] == 0xb8)
3683 memcpy (contents + rel->r_offset - 3,
3684 "\x66\x66\x66\x66\x2e\x0f\x1f\x84\0\0\0\0\0"
3685 "\x64\x48\x8b\x04\x25\0\0\0", 22);
3686 else if (contents[rel->r_offset + 4] == 0xff
3687 || contents[rel->r_offset + 4] == 0x67)
3688 memcpy (contents + rel->r_offset - 3,
3689 "\x66\x66\x66\x66\x64\x48\x8b\x04\x25\0\0\0",
3690 13);
3691 else
3692 memcpy (contents + rel->r_offset - 3,
3693 "\x66\x66\x66\x64\x48\x8b\x04\x25\0\0\0", 12);
3694 }
52bc799a 3695 else
e2cbcd91
L		 3696 {
3697 if (contents[rel->r_offset + 4] == 0xff)
3698 memcpy (contents + rel->r_offset - 3,
3699 "\x66\x0f\x1f\x40\x00\x64\x8b\x04\x25\0\0\0",
3700 13);
3701 else
3702 memcpy (contents + rel->r_offset - 3,
3703 "\x0f\x1f\x40\x00\x64\x8b\x04\x25\0\0\0", 12);
3704 }
3705 /* Skip R_X86_64_PC32, R_X86_64_PLT32, R_X86_64_GOTPCRELX
3706 and R_X86_64_PLTOFF64. */
bffbf940 3707 rel++;
60f2e42e 3708 wrel++;
bffbf940
JJ		 3709 continue;
3710 }
3711
6de2ae4a 3712 if (htab->elf.sgot == NULL)
bffbf940
JJ		 3713 abort ();
3714
0afcef53 3715 off = htab->tls_ld_or_ldm_got.offset;
bffbf940
JJ		 3716 if (off & 1)
3717 off &= ~1;
3718 else
3719 {
3720 Elf_Internal_Rela outrel;
bffbf940 3721
6de2ae4a 3722 if (htab->elf.srelgot == NULL)
bffbf940
JJ		 3723 abort ();
3724
6de2ae4a
L		 3725 outrel.r_offset = (htab->elf.sgot->output_section->vma
3726 + htab->elf.sgot->output_offset + off);
bffbf940
JJ		 3727
3728 bfd_put_64 (output_bfd, 0,
6de2ae4a 3729 htab->elf.sgot->contents + off);
bffbf940 3730 bfd_put_64 (output_bfd, 0,
6de2ae4a 3731 htab->elf.sgot->contents + off + GOT_ENTRY_SIZE);
351f65ca 3732 outrel.r_info = htab->r_info (0, R_X86_64_DTPMOD64);
bffbf940 3733 outrel.r_addend = 0;
351f65ca 3734 elf_append_rela (output_bfd, htab->elf.srelgot,
464d3bd4 3735 &outrel);
0afcef53 3736 htab->tls_ld_or_ldm_got.offset |= 1;
bffbf940 3737 }
6de2ae4a
L		 3738 relocation = htab->elf.sgot->output_section->vma
3739 + htab->elf.sgot->output_offset + off;
b34976b6 3740 unresolved_reloc = FALSE;
bffbf940
JJ		 3741 break;
3742
3743 case R_X86_64_DTPOFF32:
0e1862bb
L		 3744 if (!bfd_link_executable (info)
3745 || (input_section->flags & SEC_CODE) == 0)
0afcef53 3746 relocation -= _bfd_x86_elf_dtpoff_base (info);
bffbf940 3747 else
351f65ca 3748 relocation = elf_x86_64_tpoff (info, relocation);
bffbf940
JJ		 3749 break;
3750
3751 case R_X86_64_TPOFF32:
6769d501 3752 case R_X86_64_TPOFF64:
0e1862bb 3753 BFD_ASSERT (bfd_link_executable (info));
351f65ca 3754 relocation = elf_x86_64_tpoff (info, relocation);
bffbf940
JJ		 3755 break;
3756
a69ed7f7
L		 3757 case R_X86_64_DTPOFF64:
3758 BFD_ASSERT ((input_section->flags & SEC_CODE) == 0);
0afcef53 3759 relocation -= _bfd_x86_elf_dtpoff_base (info);
a69ed7f7
L		 3760 break;
3761
70256ad8
AJ		 3762 default:
3763 break;
3764 }
8d88c4ca 3765
239e1f3a
AM		 3766 /* Dynamic relocs are not propagated for SEC_DEBUGGING sections
3767 because such sections are not SEC_ALLOC and thus ld.so will
3768 not process them. */
c434dee6 3769 if (unresolved_reloc
239e1f3a 3770 && !((input_section->flags & SEC_DEBUGGING) != 0
1d5316ab
AM		 3771 && h->def_dynamic)
3772 && _bfd_elf_section_offset (output_bfd, info, input_section,
3773 rel->r_offset) != (bfd_vma) -1)
a040981f 3774 {
7073b5b9
L		 3775 switch (r_type)
3776 {
3777 case R_X86_64_32S:
a5b4ee94
L		 3778 sec = h->root.u.def.section;
3779 if ((info->nocopyreloc
3780 || (eh->def_protected
3781 && elf_has_no_copy_on_protected (h->root.u.def.section->owner)))
7073b5b9
L		 3782 && !(h->root.u.def.section->flags & SEC_CODE))
3783 return elf_x86_64_need_pic (info, input_bfd, input_section,
3784 h, NULL, NULL, howto);
3785 /* Fall through. */
3786
3787 default:
3788 _bfd_error_handler
3789 /* xgettext:c-format */
3790 (_("%B(%A+%#Lx): unresolvable %s relocation against symbol `%s'"),
3791 input_bfd,
3792 input_section,
3793 rel->r_offset,
3794 howto->name,
3795 h->root.root.string);
3796 return FALSE;
3797 }
a040981f 3798 }
c434dee6 3799
cbe950e9 3800do_relocation:
8d88c4ca 3801 r = _bfd_final_link_relocate (howto, input_bfd, input_section,
c434dee6
AJ		 3802 contents, rel->r_offset,
3803 relocation, rel->r_addend);
8d88c4ca 3804
62d78908 3805check_relocation_error:
8d88c4ca 3806 if (r != bfd_reloc_ok)
8da6118f 3807 {
c434dee6
AJ		 3808 const char *name;
3809
3810 if (h != NULL)
3811 name = h->root.root.string;
3812 else
8da6118f 3813 {
c434dee6
AJ		 3814 name = bfd_elf_string_from_elf_section (input_bfd,
3815 symtab_hdr->sh_link,
3816 sym->st_name);
3817 if (name == NULL)
b34976b6 3818 return FALSE;
c434dee6
AJ		 3819 if (*name == '\0')
3820 name = bfd_section_name (input_bfd, sec);
3821 }
3822
3823 if (r == bfd_reloc_overflow)
8b43e456 3824 {
78984959 3825 if (converted_reloc)
8b43e456
L		 3826 {
3827 info->callbacks->einfo
3828 (_("%F%P: failed to convert GOTPCREL relocation; relink with --no-relax\n"));
3829 return FALSE;
3830 }
3831 (*info->callbacks->reloc_overflow)
3832 (info, (h ? &h->root : NULL), name, howto->name,
3833 (bfd_vma) 0, input_bfd, input_section, rel->r_offset);
3834 }
c434dee6
AJ		 3835 else
3836 {
4eca0228 3837 _bfd_error_handler
695344c0 3838 /* xgettext:c-format */
d42c267e 3839 (_("%B(%A+%#Lx): reloc against `%s': error %d"),
d003868e 3840 input_bfd, input_section,
d42c267e 3841 rel->r_offset, name, (int) r);
b34976b6 3842 return FALSE;
8da6118f
KH		 3843 }
3844 }
60f2e42e
L		 3845
3846 if (wrel != rel)
3847 *wrel = *rel;
3848 }
3849
3850 if (wrel != rel)
3851 {
3852 Elf_Internal_Shdr *rel_hdr;
3853 size_t deleted = rel - wrel;
3854
3855 rel_hdr = _bfd_elf_single_rel_hdr (input_section->output_section);
3856 rel_hdr->sh_size -= rel_hdr->sh_entsize * deleted;
3857 if (rel_hdr->sh_size == 0)
3858 {
3859 /* It is too late to remove an empty reloc section. Leave
3860 one NONE reloc.
3861 ??? What is wrong with an empty section??? */
3862 rel_hdr->sh_size = rel_hdr->sh_entsize;
3863 deleted -= 1;
3864 }
3865 rel_hdr = _bfd_elf_single_rel_hdr (input_section);
3866 rel_hdr->sh_size -= rel_hdr->sh_entsize * deleted;
3867 input_section->reloc_count -= deleted;
8d88c4ca 3868 }
70256ad8 3869
b34976b6 3870 return TRUE;
70256ad8
AJ		 3871}
3872
3873/* Finish up dynamic symbol handling. We set the contents of various
3874 dynamic sections here. */
3875
b34976b6 3876static bfd_boolean
351f65ca
L		 3877elf_x86_64_finish_dynamic_symbol (bfd *output_bfd,
3878 struct bfd_link_info *info,
3879 struct elf_link_hash_entry *h,
aec6b87e 3880 Elf_Internal_Sym *sym)
70256ad8 3881{
0afcef53 3882 struct elf_x86_link_hash_table *htab;
f2c29a16 3883 bfd_boolean use_plt_second;
0afcef53 3884 struct elf_x86_link_hash_entry *eh;
aec6b87e 3885 bfd_boolean local_undefweak;
70256ad8 3886
0afcef53 3887 htab = elf_x86_hash_table (info, X86_64_ELF_DATA);
4dfe6ac6
NC		 3888 if (htab == NULL)
3889 return FALSE;
70256ad8 3890
f2c29a16
L		 3891 /* Use the second PLT section only if there is .plt section. */
3892 use_plt_second = htab->elf.splt != NULL && htab->plt_second != NULL;
0ff2b86e 3893
0afcef53 3894 eh = (struct elf_x86_link_hash_entry *) h;
9e9821dd
L		 3895 if (eh->no_finish_dynamic_symbol)
3896 abort ();
dd7e64d4 3897
aec6b87e
L		 3898 /* We keep PLT/GOT entries without dynamic PLT/GOT relocations for
3899 resolved undefined weak symbols in executable so that their
3900 references have value 0 at run-time. */
c5bce5c6 3901 local_undefweak = UNDEFINED_WEAK_RESOLVED_TO_ZERO (info, eh);
aec6b87e 3902
70256ad8
AJ		 3903 if (h->plt.offset != (bfd_vma) -1)
3904 {
70256ad8 3905 bfd_vma plt_index;
38b12349 3906 bfd_vma got_offset, plt_offset;
70256ad8 3907 Elf_Internal_Rela rela;
947216bf 3908 bfd_byte *loc;
0ff2b86e 3909 asection *plt, *gotplt, *relplt, *resolved_plt;
351f65ca 3910 const struct elf_backend_data *bed;
5974eba6 3911 bfd_vma plt_got_pcrel_offset;
cbe950e9
L		 3912
3913 /* When building a static executable, use .iplt, .igot.plt and
3914 .rela.iplt sections for STT_GNU_IFUNC symbols. */
6de2ae4a 3915 if (htab->elf.splt != NULL)
cbe950e9 3916 {
6de2ae4a
L		 3917 plt = htab->elf.splt;
3918 gotplt = htab->elf.sgotplt;
3919 relplt = htab->elf.srelplt;
cbe950e9
L		 3920 }
3921 else
3922 {
6de2ae4a
L		 3923 plt = htab->elf.iplt;
3924 gotplt = htab->elf.igotplt;
3925 relplt = htab->elf.irelplt;
cbe950e9 3926 }
70256ad8 3927
f3180fa9 3928 VERIFY_PLT_ENTRY (info, h, plt, gotplt, relplt, local_undefweak)
70256ad8
AJ		 3929
3930 /* Get the index in the procedure linkage table which
3931 corresponds to this symbol. This is the index of this symbol
3932 in all the symbols for which we are making plt entries. The
cbe950e9 3933 first entry in the procedure linkage table is reserved.
6bbec505 3934
cbe950e9 3935 Get the offset into the .got table of the entry that
407443a3 3936 corresponds to this function. Each .got entry is GOT_ENTRY_SIZE
cbe950e9
L		 3937 bytes. The first three are reserved for the dynamic linker.
3938
3939 For static executables, we don't reserve anything. */
3940
6de2ae4a 3941 if (plt == htab->elf.splt)
cbe950e9 3942 {
765e526c
L		 3943 got_offset = (h->plt.offset / htab->plt.plt_entry_size
3944 - htab->plt.has_plt0);
e1f98742 3945 got_offset = (got_offset + 3) * GOT_ENTRY_SIZE;
cbe950e9
L		 3946 }
3947 else
3948 {
765e526c 3949 got_offset = h->plt.offset / htab->plt.plt_entry_size;
e1f98742 3950 got_offset = got_offset * GOT_ENTRY_SIZE;
cbe950e9 3951 }
70256ad8 3952
38b12349 3953 /* Fill in the entry in the procedure linkage table. */
765e526c
L		 3954 memcpy (plt->contents + h->plt.offset, htab->plt.plt_entry,
3955 htab->plt.plt_entry_size);
f2c29a16 3956 if (use_plt_second)
0ff2b86e 3957 {
f2c29a16 3958 memcpy (htab->plt_second->contents + eh->plt_second.offset,
765e526c
L		 3959 htab->non_lazy_plt->plt_entry,
3960 htab->non_lazy_plt->plt_entry_size);
0ff2b86e 3961
f2c29a16
L		 3962 resolved_plt = htab->plt_second;
3963 plt_offset = eh->plt_second.offset;
0ff2b86e
L		 3964 }
3965 else
3966 {
0ff2b86e
L		 3967 resolved_plt = plt;
3968 plt_offset = h->plt.offset;
3969 }
eed180f8
RM		 3970
3971 /* Insert the relocation positions of the plt section. */
3972
3973 /* Put offset the PC-relative instruction referring to the GOT entry,
3974 subtracting the size of that instruction. */
ab7fede8
L		 3975 plt_got_pcrel_offset = (gotplt->output_section->vma
3976 + gotplt->output_offset
3977 + got_offset
3978 - resolved_plt->output_section->vma
3979 - resolved_plt->output_offset
3980 - plt_offset
765e526c 3981 - htab->plt.plt_got_insn_size);
ab7fede8
L		 3982
3983 /* Check PC-relative offset overflow in PLT entry. */
5974eba6 3984 if ((plt_got_pcrel_offset + 0x80000000) > 0xffffffff)
695344c0 3985 /* xgettext:c-format */
ab7fede8
L		 3986 info->callbacks->einfo (_("%F%B: PC-relative offset overflow in PLT entry for `%s'\n"),
3987 output_bfd, h->root.root.string);
3988
3989 bfd_put_32 (output_bfd, plt_got_pcrel_offset,
38b12349 3990 (resolved_plt->contents + plt_offset
765e526c 3991 + htab->plt.plt_got_offset));
cbe950e9 3992
653165cc 3993 /* Fill in the entry in the global offset table, initially this
aec6b87e
L		 3994 points to the second part of the PLT entry. Leave the entry
3995 as zero for undefined weak symbol in PIE. No PLT relocation
3996 against undefined weak symbol in PIE. */
3997 if (!local_undefweak)
cbe950e9 3998 {
765e526c 3999 if (htab->plt.has_plt0)
38b12349
L		 4000 bfd_put_64 (output_bfd, (plt->output_section->vma
4001 + plt->output_offset
4002 + h->plt.offset
765e526c 4003 + htab->lazy_plt->plt_lazy_offset),
38b12349 4004 gotplt->contents + got_offset);
aec6b87e
L		 4005
4006 /* Fill in the entry in the .rela.plt section. */
4007 rela.r_offset = (gotplt->output_section->vma
4008 + gotplt->output_offset
4009 + got_offset);
cf1070f1 4010 if (PLT_LOCAL_IFUNC_P (info, h))
aec6b87e 4011 {
6322e5c5
L		 4012 info->callbacks->minfo (_("Local IFUNC function `%s' in %B\n"),
4013 h->root.root.string,
4014 h->root.u.def.section->owner);
4015
aec6b87e
L		 4016 /* If an STT_GNU_IFUNC symbol is locally defined, generate
4017 R_X86_64_IRELATIVE instead of R_X86_64_JUMP_SLOT. */
4018 rela.r_info = htab->r_info (0, R_X86_64_IRELATIVE);
4019 rela.r_addend = (h->root.u.def.value
4020 + h->root.u.def.section->output_section->vma
4021 + h->root.u.def.section->output_offset);
4022 /* R_X86_64_IRELATIVE comes last. */
4023 plt_index = htab->next_irelative_index--;
4024 }
4025 else
4026 {
4027 rela.r_info = htab->r_info (h->dynindx, R_X86_64_JUMP_SLOT);
4028 rela.r_addend = 0;
4029 plt_index = htab->next_jump_slot_index++;
4030 }
e1f98742 4031
38b12349
L		 4032 /* Don't fill the second and third slots in PLT entry for
4033 static executables nor without PLT0. */
765e526c 4034 if (plt == htab->elf.splt && htab->plt.has_plt0)
aec6b87e 4035 {
38b12349 4036 bfd_vma plt0_offset
765e526c 4037 = h->plt.offset + htab->lazy_plt->plt_plt_insn_end;
aec6b87e
L		 4038
4039 /* Put relocation index. */
4040 bfd_put_32 (output_bfd, plt_index,
4041 (plt->contents + h->plt.offset
765e526c 4042 + htab->lazy_plt->plt_reloc_offset));
aec6b87e
L		 4043
4044 /* Put offset for jmp .PLT0 and check for overflow. We don't
4045 check relocation index for overflow since branch displacement
4046 will overflow first. */
4047 if (plt0_offset > 0x80000000)
695344c0 4048 /* xgettext:c-format */
aec6b87e
L		 4049 info->callbacks->einfo (_("%F%B: branch displacement overflow in PLT entry for `%s'\n"),
4050 output_bfd, h->root.root.string);
4051 bfd_put_32 (output_bfd, - plt0_offset,
38b12349 4052 (plt->contents + h->plt.offset
765e526c 4053 + htab->lazy_plt->plt_plt_offset));
aec6b87e 4054 }
351f65ca 4055
aec6b87e
L		 4056 bed = get_elf_backend_data (output_bfd);
4057 loc = relplt->contents + plt_index * bed->s->sizeof_rela;
4058 bed->s->swap_reloca_out (output_bfd, &rela, loc);
4059 }
dd7e64d4
L		 4060 }
4061 else if (eh->plt_got.offset != (bfd_vma) -1)
4062 {
38b12349 4063 bfd_vma got_offset, plt_offset;
dd7e64d4
L		 4064 asection *plt, *got;
4065 bfd_boolean got_after_plt;
4066 int32_t got_pcrel_offset;
dd7e64d4
L		 4067
4068 /* Set the entry in the GOT procedure linkage table. */
4069 plt = htab->plt_got;
4070 got = htab->elf.sgot;
4071 got_offset = h->got.offset;
4072
4073 if (got_offset == (bfd_vma) -1
e492d2f8 4074 || (h->type == STT_GNU_IFUNC && h->def_regular)
dd7e64d4
L		 4075 || plt == NULL
4076 || got == NULL)
4077 abort ();
70256ad8 4078
38b12349 4079 /* Use the non-lazy PLT entry template for the GOT PLT since they
dd7e64d4 4080 are the identical. */
dd7e64d4
L		 4081 /* Fill in the entry in the GOT procedure linkage table. */
4082 plt_offset = eh->plt_got.offset;
4083 memcpy (plt->contents + plt_offset,
765e526c
L		 4084 htab->non_lazy_plt->plt_entry,
4085 htab->non_lazy_plt->plt_entry_size);
dd7e64d4
L		 4086
4087 /* Put offset the PC-relative instruction referring to the GOT
4088 entry, subtracting the size of that instruction. */
4089 got_pcrel_offset = (got->output_section->vma
4090 + got->output_offset
4091 + got_offset
4092 - plt->output_section->vma
4093 - plt->output_offset
4094 - plt_offset
765e526c 4095 - htab->non_lazy_plt->plt_got_insn_size);
dd7e64d4
L		 4096
4097 /* Check PC-relative offset overflow in GOT PLT entry. */
4098 got_after_plt = got->output_section->vma > plt->output_section->vma;
4099 if ((got_after_plt && got_pcrel_offset < 0)
4100 || (!got_after_plt && got_pcrel_offset > 0))
695344c0 4101 /* xgettext:c-format */
dd7e64d4
L		 4102 info->callbacks->einfo (_("%F%B: PC-relative offset overflow in GOT PLT entry for `%s'\n"),
4103 output_bfd, h->root.root.string);
4104
4105 bfd_put_32 (output_bfd, got_pcrel_offset,
38b12349 4106 (plt->contents + plt_offset
765e526c 4107 + htab->non_lazy_plt->plt_got_offset));
dd7e64d4
L		 4108 }
4109
aec6b87e
L		 4110 if (!local_undefweak
4111 && !h->def_regular
dd7e64d4
L		 4112 && (h->plt.offset != (bfd_vma) -1
4113 || eh->plt_got.offset != (bfd_vma) -1))
4114 {
4115 /* Mark the symbol as undefined, rather than as defined in
4116 the .plt section. Leave the value if there were any
4117 relocations where pointer equality matters (this is a clue
4118 for the dynamic linker, to make function pointer
4119 comparisons work between an application and shared
4120 library), otherwise set it to zero. If a function is only
4121 called from a binary, there is no need to slow down
4122 shared libraries because of that. */
4123 sym->st_shndx = SHN_UNDEF;
4124 if (!h->pointer_equality_needed)
4125 sym->st_value = 0;
70256ad8
AJ		 4126 }
4127
aec6b87e
L		 4128 /* Don't generate dynamic GOT relocation against undefined weak
4129 symbol in executable. */
bffbf940 4130 if (h->got.offset != (bfd_vma) -1
0afcef53
L		 4131 && ! GOT_TLS_GD_ANY_P (elf_x86_hash_entry (h)->tls_type)
4132 && elf_x86_hash_entry (h)->tls_type != GOT_TLS_IE
aec6b87e 4133 && !local_undefweak)
053579d7 4134 {
053579d7 4135 Elf_Internal_Rela rela;
233cc9c1 4136 asection *relgot = htab->elf.srelgot;
053579d7
AJ		 4137
4138 /* This symbol has an entry in the global offset table. Set it
bffbf940 4139 up. */
6de2ae4a 4140 if (htab->elf.sgot == NULL || htab->elf.srelgot == NULL)
c434dee6 4141 abort ();
053579d7 4142
6de2ae4a
L		 4143 rela.r_offset = (htab->elf.sgot->output_section->vma
4144 + htab->elf.sgot->output_offset
dc810e39 4145 + (h->got.offset &~ (bfd_vma) 1));
053579d7
AJ		 4146
4147 /* If this is a static link, or it is a -Bsymbolic link and the
4148 symbol is defined locally or was forced to be local because
4149 of a version file, we just want to emit a RELATIVE reloc.
4150 The entry in the global offset table will already have been
4151 initialized in the relocate_section function. */
710ab287 4152 if (h->def_regular
0018b0a3
L		 4153 && h->type == STT_GNU_IFUNC)
4154 {
233cc9c1
L		 4155 if (h->plt.offset == (bfd_vma) -1)
4156 {
4157 /* STT_GNU_IFUNC is referenced without PLT. */
4158 if (htab->elf.splt == NULL)
4159 {
4160 /* use .rel[a].iplt section to store .got relocations
4161 in static executable. */
4162 relgot = htab->elf.irelplt;
4163 }
6999821f 4164 if (SYMBOL_REFERENCES_LOCAL_P (info, h))
233cc9c1 4165 {
6322e5c5 4166 info->callbacks->minfo (_("Local IFUNC function `%s' in %B\n"),
6322e5c5
L		 4167 h->root.root.string,
4168 h->root.u.def.section->owner);
4169
233cc9c1
L		 4170 rela.r_info = htab->r_info (0,
4171 R_X86_64_IRELATIVE);
4172 rela.r_addend = (h->root.u.def.value
4173 + h->root.u.def.section->output_section->vma
4174 + h->root.u.def.section->output_offset);
4175 }
4176 else
4177 goto do_glob_dat;
4178 }
4179 else if (bfd_link_pic (info))
710ab287
L		 4180 {
4181 /* Generate R_X86_64_GLOB_DAT. */
4182 goto do_glob_dat;
4183 }
4184 else
4185 {
90d60710 4186 asection *plt;
aab82f4c 4187 bfd_vma plt_offset;
90d60710 4188
710ab287
L		 4189 if (!h->pointer_equality_needed)
4190 abort ();
4191
4192 /* For non-shared object, we can't use .got.plt, which
4193 contains the real function addres if we need pointer
4194 equality. We load the GOT entry with the PLT entry. */
f2c29a16 4195 if (htab->plt_second != NULL)
aab82f4c 4196 {
f2c29a16
L		 4197 plt = htab->plt_second;
4198 plt_offset = eh->plt_second.offset;
aab82f4c
L		 4199 }
4200 else
4201 {
4202 plt = htab->elf.splt ? htab->elf.splt : htab->elf.iplt;
4203 plt_offset = h->plt.offset;
4204 }
710ab287
L		 4205 bfd_put_64 (output_bfd, (plt->output_section->vma
4206 + plt->output_offset
aab82f4c 4207 + plt_offset),
6de2ae4a 4208 htab->elf.sgot->contents + h->got.offset);
710ab287
L		 4209 return TRUE;
4210 }
0018b0a3 4211 }
0e1862bb 4212 else if (bfd_link_pic (info)
6999821f 4213 && SYMBOL_REFERENCES_LOCAL_P (info, h))
053579d7 4214 {
ad71ce8d 4215 if (!(h->def_regular || ELF_COMMON_DEF_P (h)))
41bed6dd 4216 return FALSE;
cc78d0af 4217 BFD_ASSERT((h->got.offset & 1) != 0);
351f65ca 4218 rela.r_info = htab->r_info (0, R_X86_64_RELATIVE);
053579d7
AJ		 4219 rela.r_addend = (h->root.u.def.value
4220 + h->root.u.def.section->output_section->vma
4221 + h->root.u.def.section->output_offset);
4222 }
4223 else
4224 {
4225 BFD_ASSERT((h->got.offset & 1) == 0);
710ab287 4226do_glob_dat:
c434dee6 4227 bfd_put_64 (output_bfd, (bfd_vma) 0,
6de2ae4a 4228 htab->elf.sgot->contents + h->got.offset);
351f65ca 4229 rela.r_info = htab->r_info (h->dynindx, R_X86_64_GLOB_DAT);
053579d7
AJ		 4230 rela.r_addend = 0;
4231 }
4232
233cc9c1 4233 elf_append_rela (output_bfd, relgot, &rela);
053579d7
AJ		 4234 }
4235
f5385ebf 4236 if (h->needs_copy)
70256ad8 4237 {
70256ad8 4238 Elf_Internal_Rela rela;
5474d94f 4239 asection *s;
70256ad8
AJ		 4240
4241 /* This symbol needs a copy reloc. Set it up. */
ff38b4cc 4242 VERIFY_COPY_RELOC (h, htab)
70256ad8
AJ		 4243
4244 rela.r_offset = (h->root.u.def.value
4245 + h->root.u.def.section->output_section->vma
4246 + h->root.u.def.section->output_offset);
351f65ca 4247 rela.r_info = htab->r_info (h->dynindx, R_X86_64_COPY);
70256ad8 4248 rela.r_addend = 0;
afbf7e8e 4249 if (h->root.u.def.section == htab->elf.sdynrelro)
5474d94f
AM		 4250 s = htab->elf.sreldynrelro;
4251 else
4252 s = htab->elf.srelbss;
4253 elf_append_rela (output_bfd, s, &rela);
70256ad8
AJ		 4254 }
4255
b34976b6 4256 return TRUE;
70256ad8
AJ		 4257}
4258
c25bc9fc
L		 4259/* Finish up local dynamic symbol handling. We set the contents of
4260 various dynamic sections here. */
4261
4262static bfd_boolean
351f65ca 4263elf_x86_64_finish_local_dynamic_symbol (void **slot, void *inf)
c25bc9fc
L		 4264{
4265 struct elf_link_hash_entry *h
4266 = (struct elf_link_hash_entry *) *slot;
4267 struct bfd_link_info *info
eed180f8 4268 = (struct bfd_link_info *) inf;
c25bc9fc 4269
351f65ca 4270 return elf_x86_64_finish_dynamic_symbol (info->output_bfd,
5f0f0847 4271 info, h, NULL);
c25bc9fc
L		 4272}
4273
aec6b87e
L		 4274/* Finish up undefined weak symbol handling in PIE. Fill its PLT entry
4275 here since undefined weak symbol may not be dynamic and may not be
4276 called for elf_x86_64_finish_dynamic_symbol. */
4277
4278static bfd_boolean
4279elf_x86_64_pie_finish_undefweak_symbol (struct bfd_hash_entry *bh,
4280 void *inf)
4281{
4282 struct elf_link_hash_entry *h = (struct elf_link_hash_entry *) bh;
4283 struct bfd_link_info *info = (struct bfd_link_info *) inf;
4284
4285 if (h->root.type != bfd_link_hash_undefweak
4286 || h->dynindx != -1)
4287 return TRUE;
4288
4289 return elf_x86_64_finish_dynamic_symbol (info->output_bfd,
5f0f0847 4290 info, h, NULL);
aec6b87e
L		 4291}
4292
c434dee6
AJ		 4293/* Used to decide how to sort relocs in an optimal manner for the
4294 dynamic linker, before writing them out. */
4295
4296static enum elf_reloc_type_class
cae1fbbb 4297elf_x86_64_reloc_type_class (const struct bfd_link_info *info,
7e612e98
AM		 4298 const asection *rel_sec ATTRIBUTE_UNUSED,
4299 const Elf_Internal_Rela *rela)
c434dee6 4300{
cae1fbbb
L		 4301 bfd *abfd = info->output_bfd;
4302 const struct elf_backend_data *bed = get_elf_backend_data (abfd);
0afcef53
L		 4303 struct elf_x86_link_hash_table *htab
4304 = elf_x86_hash_table (info, X86_64_ELF_DATA);
cae1fbbb 4305
d9e3b590
L		 4306 if (htab->elf.dynsym != NULL
4307 && htab->elf.dynsym->contents != NULL)
4308 {
4309 /* Check relocation against STT_GNU_IFUNC symbol if there are
07d6d2b8 4310 dynamic symbols. */
d9e3b590 4311 unsigned long r_symndx = htab->r_sym (rela->r_info);
897463b1
L		 4312 if (r_symndx != STN_UNDEF)
4313 {
4314 Elf_Internal_Sym sym;
4315 if (!bed->s->swap_symbol_in (abfd,
4316 (htab->elf.dynsym->contents
4317 + r_symndx * bed->s->sizeof_sym),
4318 0, &sym))
4319 abort ();
d9e3b590 4320
897463b1
L		 4321 if (ELF_ST_TYPE (sym.st_info) == STT_GNU_IFUNC)
4322 return reloc_class_ifunc;
4323 }
d9e3b590 4324 }
cae1fbbb 4325
351f65ca 4326 switch ((int) ELF32_R_TYPE (rela->r_info))
c434dee6 4327 {
c428ce9d
L		 4328 case R_X86_64_IRELATIVE:
4329 return reloc_class_ifunc;
c434dee6 4330 case R_X86_64_RELATIVE:
1da80baa 4331 case R_X86_64_RELATIVE64:
c434dee6
AJ		 4332 return reloc_class_relative;
4333 case R_X86_64_JUMP_SLOT:
4334 return reloc_class_plt;
4335 case R_X86_64_COPY:
4336 return reloc_class_copy;
4337 default:
4338 return reloc_class_normal;
4339 }
4340}
4341
70256ad8
AJ		 4342/* Finish up the dynamic sections. */
4343
b34976b6 4344static bfd_boolean
351f65ca
L		 4345elf_x86_64_finish_dynamic_sections (bfd *output_bfd,
4346 struct bfd_link_info *info)
70256ad8 4347{
0afcef53 4348 struct elf_x86_link_hash_table *htab;
70256ad8 4349
9577f60b 4350 htab = _bfd_x86_elf_finish_dynamic_sections (output_bfd, info);
4dfe6ac6
NC		 4351 if (htab == NULL)
4352 return FALSE;
4353
9577f60b
L		 4354 if (! htab->elf.dynamic_sections_created)
4355 return TRUE;
70256ad8 4356
9577f60b 4357 if (htab->elf.splt && htab->elf.splt->size > 0)
e41b3a13 4358 {
9577f60b
L		 4359 elf_section_data (htab->elf.splt->output_section)
4360 ->this_hdr.sh_entsize = htab->plt.plt_entry_size;
e41b3a13 4361
9577f60b 4362 if (htab->plt.has_plt0)
fff53dae 4363 {
9577f60b
L		 4364 /* Fill in the special first entry in the procedure linkage
4365 table. */
4366 memcpy (htab->elf.splt->contents,
4367 htab->lazy_plt->plt0_entry,
4368 htab->lazy_plt->plt0_entry_size);
4369 /* Add offset for pushq GOT+8(%rip), since the instruction
4370 uses 6 bytes subtract this value. */
4371 bfd_put_32 (output_bfd,
4372 (htab->elf.sgotplt->output_section->vma
4373 + htab->elf.sgotplt->output_offset
4374 + 8
4375 - htab->elf.splt->output_section->vma
4376 - htab->elf.splt->output_offset
4377 - 6),
4378 (htab->elf.splt->contents
4379 + htab->lazy_plt->plt0_got1_offset));
4380 /* Add offset for the PC-relative instruction accessing
4381 GOT+16, subtracting the offset to the end of that
4382 instruction. */
4383 bfd_put_32 (output_bfd,
4384 (htab->elf.sgotplt->output_section->vma
4385 + htab->elf.sgotplt->output_offset
4386 + 16
4387 - htab->elf.splt->output_section->vma
4388 - htab->elf.splt->output_offset
4389 - htab->lazy_plt->plt0_got2_insn_end),
4390 (htab->elf.splt->contents
4391 + htab->lazy_plt->plt0_got2_offset));
fff53dae 4392 }
fff53dae 4393
9577f60b 4394 if (htab->tlsdesc_plt)
8361ed4d 4395 {
9577f60b
L		 4396 bfd_put_64 (output_bfd, (bfd_vma) 0,
4397 htab->elf.sgot->contents + htab->tlsdesc_got);
4398
4399 memcpy (htab->elf.splt->contents + htab->tlsdesc_plt,
4400 htab->lazy_plt->plt0_entry,
4401 htab->lazy_plt->plt0_entry_size);
4402
4403 /* Add offset for pushq GOT+8(%rip), since the
4404 instruction uses 6 bytes subtract this value. */
4405 bfd_put_32 (output_bfd,
4406 (htab->elf.sgotplt->output_section->vma
4407 + htab->elf.sgotplt->output_offset
4408 + 8
4409 - htab->elf.splt->output_section->vma
4410 - htab->elf.splt->output_offset
4411 - htab->tlsdesc_plt
4412 - 6),
4413 (htab->elf.splt->contents
4414 + htab->tlsdesc_plt
4415 + htab->lazy_plt->plt0_got1_offset));
4416 /* Add offset for the PC-relative instruction accessing
4417 GOT+TDG, where TDG stands for htab->tlsdesc_got,
4418 subtracting the offset to the end of that
4419 instruction. */
4420 bfd_put_32 (output_bfd,
4421 (htab->elf.sgot->output_section->vma
4422 + htab->elf.sgot->output_offset
4423 + htab->tlsdesc_got
4424 - htab->elf.splt->output_section->vma
4425 - htab->elf.splt->output_offset
4426 - htab->tlsdesc_plt
4427 - htab->lazy_plt->plt0_got2_insn_end),
4428 (htab->elf.splt->contents
4429 + htab->tlsdesc_plt
4430 + htab->lazy_plt->plt0_got2_offset));
8361ed4d
L		 4431 }
4432 }
4433
aec6b87e
L		 4434 /* Fill PLT entries for undefined weak symbols in PIE. */
4435 if (bfd_link_pie (info))
4436 bfd_hash_traverse (&info->hash->table,
4437 elf_x86_64_pie_finish_undefweak_symbol,
4438 info);
4439
b34976b6 4440 return TRUE;
8d88c4ca
NC		 4441}
4442
233cc9c1
L		 4443/* Fill PLT/GOT entries and allocate dynamic relocations for local
4444 STT_GNU_IFUNC symbols, which aren't in the ELF linker hash table.
4445 It has to be done before elf_link_sort_relocs is called so that
4446 dynamic relocations are properly sorted. */
4447
4448static bfd_boolean
4449elf_x86_64_output_arch_local_syms
4450 (bfd *output_bfd ATTRIBUTE_UNUSED,
4451 struct bfd_link_info *info,
4452 void *flaginfo ATTRIBUTE_UNUSED,
4453 int (*func) (void *, const char *,
4454 Elf_Internal_Sym *,
4455 asection *,
4456 struct elf_link_hash_entry *) ATTRIBUTE_UNUSED)
4457{
0afcef53
L		 4458 struct elf_x86_link_hash_table *htab
4459 = elf_x86_hash_table (info, X86_64_ELF_DATA);
233cc9c1
L		 4460 if (htab == NULL)
4461 return FALSE;
4462
4463 /* Fill PLT and GOT entries for local STT_GNU_IFUNC symbols. */
4464 htab_traverse (htab->loc_hash_table,
4465 elf_x86_64_finish_local_dynamic_symbol,
4466 info);
4467
4468 return TRUE;
4469}
4470
38b12349 4471/* Forward declaration. */
765e526c 4472static const struct elf_x86_lazy_plt_layout elf_x86_64_nacl_plt;
38b12349
L		 4473
4474/* Similar to _bfd_elf_get_synthetic_symtab. Support PLTs with all
4475 dynamic relocations. */
4476
4477static long
4478elf_x86_64_get_synthetic_symtab (bfd *abfd,
4479 long symcount ATTRIBUTE_UNUSED,
4480 asymbol **syms ATTRIBUTE_UNUSED,
4481 long dynsymcount,
4482 asymbol **dynsyms,
4483 asymbol **ret)
4484{
f493882d 4485 long count, i, n;
38b12349 4486 int j;
38b12349 4487 bfd_byte *plt_contents;
f493882d 4488 long relsize;
765e526c
L		 4489 const struct elf_x86_lazy_plt_layout *lazy_plt;
4490 const struct elf_x86_non_lazy_plt_layout *non_lazy_plt;
4491 const struct elf_x86_lazy_plt_layout *lazy_bnd_plt;
4492 const struct elf_x86_non_lazy_plt_layout *non_lazy_bnd_plt;
4493 const struct elf_x86_lazy_plt_layout *lazy_ibt_plt;
4494 const struct elf_x86_non_lazy_plt_layout *non_lazy_ibt_plt;
38b12349 4495 asection *plt;
f493882d
L		 4496 enum elf_x86_plt_type plt_type;
4497 struct elf_x86_plt plts[] =
144bed8d 4498 {
38b12349
L		 4499 { ".plt", NULL, NULL, plt_unknown, 0, 0, 0, 0 },
4500 { ".plt.got", NULL, NULL, plt_non_lazy, 0, 0, 0, 0 },
f2c29a16
L		 4501 { ".plt.sec", NULL, NULL, plt_second, 0, 0, 0, 0 },
4502 { ".plt.bnd", NULL, NULL, plt_second, 0, 0, 0, 0 },
dd9e66ee 4503 { NULL, NULL, NULL, plt_non_lazy, 0, 0, 0, 0 }
38b12349 4504 };
144bed8d 4505
38b12349 4506 *ret = NULL;
144bed8d 4507
38b12349
L		 4508 if ((abfd->flags & (DYNAMIC | EXEC_P)) == 0)
4509 return 0;
144bed8d 4510
38b12349
L		 4511 if (dynsymcount <= 0)
4512 return 0;
cca5b8b6 4513
38b12349
L		 4514 relsize = bfd_get_dynamic_reloc_upper_bound (abfd);
4515 if (relsize <= 0)
4516 return -1;
4517
851b6fa1 4518 if (get_elf_x86_backend_data (abfd)->target_os == is_normal)
144bed8d 4519 {
38b12349
L		 4520 lazy_plt = &elf_x86_64_lazy_plt;
4521 non_lazy_plt = &elf_x86_64_non_lazy_plt;
4522 lazy_bnd_plt = &elf_x86_64_lazy_bnd_plt;
4523 non_lazy_bnd_plt = &elf_x86_64_non_lazy_bnd_plt;
ee2fdd6f
L		 4524 if (ABI_64_P (abfd))
4525 {
4526 lazy_ibt_plt = &elf_x86_64_lazy_ibt_plt;
4527 non_lazy_ibt_plt = &elf_x86_64_non_lazy_ibt_plt;
4528 }
4529 else
4530 {
4531 lazy_ibt_plt = &elf_x32_lazy_ibt_plt;
4532 non_lazy_ibt_plt = &elf_x32_non_lazy_ibt_plt;
4533 }
38b12349
L		 4534 }
4535 else
4536 {
4537 lazy_plt = &elf_x86_64_nacl_plt;
4538 non_lazy_plt = NULL;
4539 lazy_bnd_plt = NULL;
4540 non_lazy_bnd_plt = NULL;
ee2fdd6f
L		 4541 lazy_ibt_plt = NULL;
4542 non_lazy_ibt_plt = NULL;
38b12349 4543 }
144bed8d 4544
38b12349
L		 4545 count = 0;
4546 for (j = 0; plts[j].name != NULL; j++)
4547 {
4548 plt = bfd_get_section_by_name (abfd, plts[j].name);
90efb642 4549 if (plt == NULL || plt->size == 0)
6f25f223 4550 continue;
533d0af0 4551
38b12349
L		 4552 /* Get the PLT section contents. */
4553 plt_contents = (bfd_byte *) bfd_malloc (plt->size);
4554 if (plt_contents == NULL)
4555 break;
4556 if (!bfd_get_section_contents (abfd, (asection *) plt,
4557 plt_contents, 0, plt->size))
4558 {
4559 free (plt_contents);
4560 break;
4561 }
144bed8d 4562
38b12349
L		 4563 /* Check what kind of PLT it is. */
4564 plt_type = plt_unknown;
90efb642
L		 4565 if (plts[j].type == plt_unknown
4566 && (plt->size >= (lazy_plt->plt_entry_size
4567 + lazy_plt->plt_entry_size)))
144bed8d 4568 {
38b12349
L		 4569 /* Match lazy PLT first. Need to check the first two
4570 instructions. */
4571 if ((memcmp (plt_contents, lazy_plt->plt0_entry,
4572 lazy_plt->plt0_got1_offset) == 0)
4573 && (memcmp (plt_contents + 6, lazy_plt->plt0_entry + 6,
4574 2) == 0))
4575 plt_type = plt_lazy;
4576 else if (lazy_bnd_plt != NULL
4577 && (memcmp (plt_contents, lazy_bnd_plt->plt0_entry,
4578 lazy_bnd_plt->plt0_got1_offset) == 0)
4579 && (memcmp (plt_contents + 6,
4580 lazy_bnd_plt->plt0_entry + 6, 3) == 0))
ec1f73bb 4581 {
f2c29a16 4582 plt_type = plt_lazy | plt_second;
ee2fdd6f
L		 4583 /* The fist entry in the lazy IBT PLT is the same as the
4584 lazy BND PLT. */
4585 if ((memcmp (plt_contents + lazy_ibt_plt->plt_entry_size,
4586 lazy_ibt_plt->plt_entry,
4587 lazy_ibt_plt->plt_got_offset) == 0))
4588 lazy_plt = lazy_ibt_plt;
4589 else
4590 lazy_plt = lazy_bnd_plt;
ec1f73bb 4591 }
144bed8d 4592 }
fca6ae69 4593
38b12349 4594 if (non_lazy_plt != NULL
90efb642
L		 4595 && (plt_type == plt_unknown || plt_type == plt_non_lazy)
4596 && plt->size >= non_lazy_plt->plt_entry_size)
38b12349
L		 4597 {
4598 /* Match non-lazy PLT. */
4599 if (memcmp (plt_contents, non_lazy_plt->plt_entry,
4600 non_lazy_plt->plt_got_offset) == 0)
4601 plt_type = plt_non_lazy;
4602 }
4603
ee2fdd6f 4604 if (plt_type == plt_unknown || plt_type == plt_second)
38b12349 4605 {
ee2fdd6f 4606 if (non_lazy_bnd_plt != NULL
90efb642 4607 && plt->size >= non_lazy_bnd_plt->plt_entry_size
ee2fdd6f
L		 4608 && (memcmp (plt_contents, non_lazy_bnd_plt->plt_entry,
4609 non_lazy_bnd_plt->plt_got_offset) == 0))
38b12349 4610 {
ee2fdd6f 4611 /* Match BND PLT. */
f2c29a16 4612 plt_type = plt_second;
38b12349
L		 4613 non_lazy_plt = non_lazy_bnd_plt;
4614 }
ee2fdd6f 4615 else if (non_lazy_ibt_plt != NULL
90efb642 4616 && plt->size >= non_lazy_ibt_plt->plt_entry_size
ee2fdd6f
L		 4617 && (memcmp (plt_contents,
4618 non_lazy_ibt_plt->plt_entry,
4619 non_lazy_ibt_plt->plt_got_offset) == 0))
4620 {
4621 /* Match IBT PLT. */
4622 plt_type = plt_second;
4623 non_lazy_plt = non_lazy_ibt_plt;
4624 }
38b12349
L		 4625 }
4626
4627 if (plt_type == plt_unknown)
37c0b6ee
L		 4628 {
4629 free (plt_contents);
4630 continue;
4631 }
38b12349
L		 4632
4633 plts[j].sec = plt;
4634 plts[j].type = plt_type;
4635
4636 if ((plt_type & plt_lazy))
4637 {
4638 plts[j].plt_got_offset = lazy_plt->plt_got_offset;
4639 plts[j].plt_got_insn_size = lazy_plt->plt_got_insn_size;
4640 plts[j].plt_entry_size = lazy_plt->plt_entry_size;
4641 /* Skip PLT0 in lazy PLT. */
4642 i = 1;
4643 }
4644 else
4645 {
4646 plts[j].plt_got_offset = non_lazy_plt->plt_got_offset;
4647 plts[j].plt_got_insn_size = non_lazy_plt->plt_got_insn_size;
4648 plts[j].plt_entry_size = non_lazy_plt->plt_entry_size;
4649 i = 0;
4650 }
4651
f2c29a16
L		 4652 /* Skip lazy PLT when the second PLT is used. */
4653 if (plt_type == (plt_lazy | plt_second))
38b12349
L		 4654 plts[j].count = 0;
4655 else
4656 {
4657 n = plt->size / plts[j].plt_entry_size;
4658 plts[j].count = n;
4659 count += n - i;
4660 }
4661
4662 plts[j].contents = plt_contents;
144bed8d
L		 4663 }
4664
f493882d
L		 4665 return _bfd_x86_elf_get_synthetic_symtab (abfd, count, relsize,
4666 (bfd_vma) 0, plts, dynsyms,
4667 ret);
0ff2b86e
L		 4668}
4669
d2b2c203
DJ		 4670/* Handle an x86-64 specific section when reading an object file. This
4671 is called when elfcode.h finds a section with an unknown type. */
4672
4673static bfd_boolean
0c723101
L		 4674elf_x86_64_section_from_shdr (bfd *abfd, Elf_Internal_Shdr *hdr,
4675 const char *name, int shindex)
d2b2c203
DJ		 4676{
4677 if (hdr->sh_type != SHT_X86_64_UNWIND)
4678 return FALSE;
4679
6dc132d9 4680 if (! _bfd_elf_make_section_from_shdr (abfd, hdr, name, shindex))
d2b2c203
DJ		 4681 return FALSE;
4682
4683 return TRUE;
4684}
4685
3b22753a
L		 4686/* Hook called by the linker routine which adds symbols from an object
4687 file. We use it to put SHN_X86_64_LCOMMON items in .lbss, instead
4688 of .bss. */
4689
4690static bfd_boolean
351f65ca 4691elf_x86_64_add_symbol_hook (bfd *abfd,
a43942db 4692 struct bfd_link_info *info ATTRIBUTE_UNUSED,
351f65ca
L		 4693 Elf_Internal_Sym *sym,
4694 const char **namep ATTRIBUTE_UNUSED,
4695 flagword *flagsp ATTRIBUTE_UNUSED,
4696 asection **secp,
4697 bfd_vma *valp)
3b22753a
L		 4698{
4699 asection *lcomm;
4700
4701 switch (sym->st_shndx)
4702 {
4703 case SHN_X86_64_LCOMMON:
4704 lcomm = bfd_get_section_by_name (abfd, "LARGE_COMMON");
4705 if (lcomm == NULL)
4706 {
4707 lcomm = bfd_make_section_with_flags (abfd,
4708 "LARGE_COMMON",
4709 (SEC_ALLOC
4710 | SEC_IS_COMMON
4711 | SEC_LINKER_CREATED));
4712 if (lcomm == NULL)
4713 return FALSE;
4714 elf_section_flags (lcomm) |= SHF_X86_64_LARGE;
4715 }
4716 *secp = lcomm;
4717 *valp = sym->st_size;
c35bdf6e 4718 return TRUE;
3b22753a 4719 }
d8045f23 4720
3b22753a
L		 4721 return TRUE;
4722}
4723
4724
4725/* Given a BFD section, try to locate the corresponding ELF section
4726 index. */
4727
4728static bfd_boolean
351f65ca
L		 4729elf_x86_64_elf_section_from_bfd_section (bfd *abfd ATTRIBUTE_UNUSED,
4730 asection *sec, int *index_return)
3b22753a
L		 4731{
4732 if (sec == &_bfd_elf_large_com_section)
4733 {
91d6fa6a 4734 *index_return = SHN_X86_64_LCOMMON;
3b22753a
L		 4735 return TRUE;
4736 }
4737 return FALSE;
4738}
4739
4740/* Process a symbol. */
4741
4742static void
351f65ca
L		 4743elf_x86_64_symbol_processing (bfd *abfd ATTRIBUTE_UNUSED,
4744 asymbol *asym)
3b22753a
L		 4745{
4746 elf_symbol_type *elfsym = (elf_symbol_type *) asym;
4747
4748 switch (elfsym->internal_elf_sym.st_shndx)
4749 {
4750 case SHN_X86_64_LCOMMON:
4751 asym->section = &_bfd_elf_large_com_section;
4752 asym->value = elfsym->internal_elf_sym.st_size;
4753 /* Common symbol doesn't set BSF_GLOBAL. */
4754 asym->flags &= ~BSF_GLOBAL;
4755 break;
4756 }
4757}
4758
4759static bfd_boolean
351f65ca 4760elf_x86_64_common_definition (Elf_Internal_Sym *sym)
3b22753a
L		 4761{
4762 return (sym->st_shndx == SHN_COMMON
4763 || sym->st_shndx == SHN_X86_64_LCOMMON);
4764}
4765
4766static unsigned int
351f65ca 4767elf_x86_64_common_section_index (asection *sec)
3b22753a
L		 4768{
4769 if ((elf_section_flags (sec) & SHF_X86_64_LARGE) == 0)
4770 return SHN_COMMON;
4771 else
4772 return SHN_X86_64_LCOMMON;
4773}
4774
4775static asection *
351f65ca 4776elf_x86_64_common_section (asection *sec)
3b22753a
L		 4777{
4778 if ((elf_section_flags (sec) & SHF_X86_64_LARGE) == 0)
4779 return bfd_com_section_ptr;
4780 else
4781 return &_bfd_elf_large_com_section;
4782}
4783
4784static bfd_boolean
5d13b3b3
AM		 4785elf_x86_64_merge_symbol (struct elf_link_hash_entry *h,
4786 const Elf_Internal_Sym *sym,
351f65ca 4787 asection **psec,
5d13b3b3
AM		 4788 bfd_boolean newdef,
4789 bfd_boolean olddef,
351f65ca 4790 bfd *oldbfd,
5d13b3b3 4791 const asection *oldsec)
3b22753a
L		 4792{
4793 /* A normal common symbol and a large common symbol result in a
00492999
L		 4794 normal common symbol. We turn the large common symbol into a
4795 normal one. */
5d13b3b3 4796 if (!olddef
3b22753a 4797 && h->root.type == bfd_link_hash_common
5d13b3b3
AM		 4798 && !newdef
4799 && bfd_is_com_section (*psec)
4800 && oldsec != *psec)
3b22753a 4801 {
00492999 4802 if (sym->st_shndx == SHN_COMMON
5d13b3b3 4803 && (elf_section_flags (oldsec) & SHF_X86_64_LARGE) != 0)
00492999
L		 4804 {
4805 h->root.u.c.p->section
4806 = bfd_make_section_old_way (oldbfd, "COMMON");
4807 h->root.u.c.p->section->flags = SEC_ALLOC;
4808 }
4809 else if (sym->st_shndx == SHN_X86_64_LCOMMON
5d13b3b3
AM		 4810 && (elf_section_flags (oldsec) & SHF_X86_64_LARGE) == 0)
4811 *psec = bfd_com_section_ptr;
3b22753a
L		 4812 }
4813
4814 return TRUE;
4815}
4816
4817static int
351f65ca
L		 4818elf_x86_64_additional_program_headers (bfd *abfd,
4819 struct bfd_link_info *info ATTRIBUTE_UNUSED)
3b22753a
L		 4820{
4821 asection *s;
9a2e389a 4822 int count = 0;
3b22753a
L		 4823
4824 /* Check to see if we need a large readonly segment. */
4825 s = bfd_get_section_by_name (abfd, ".lrodata");
4826 if (s && (s->flags & SEC_LOAD))
4827 count++;
4828
4829 /* Check to see if we need a large data segment. Since .lbss sections
4830 is placed right after the .bss section, there should be no need for
4831 a large data segment just because of .lbss. */
4832 s = bfd_get_section_by_name (abfd, ".ldata");
4833 if (s && (s->flags & SEC_LOAD))
4834 count++;
4835
4836 return count;
4837}
4838
c543bf9a
L		 4839/* Return TRUE iff relocations for INPUT are compatible with OUTPUT. */
4840
4841static bfd_boolean
4842elf_x86_64_relocs_compatible (const bfd_target *input,
4843 const bfd_target *output)
4844{
4845 return ((xvec_get_elf_backend_data (input)->s->elfclass
4846 == xvec_get_elf_backend_data (output)->s->elfclass)
4847 && _bfd_elf_relocs_compatible (input, output));
4848}
4849
38b12349
L		 4850/* Set up x86-64 GNU properties. Return the first relocatable ELF input
4851 with GNU properties if found. Otherwise, return NULL. */
4852
4853static bfd *
4854elf_x86_64_link_setup_gnu_properties (struct bfd_link_info *info)
4855{
1de031c8 4856 struct elf_x86_init_table init_table;
ee2fdd6f 4857
78984959
L		 4858 if ((int) R_X86_64_standard >= (int) R_X86_64_converted_reloc_bit
4859 || (int) R_X86_64_max <= (int) R_X86_64_converted_reloc_bit
4860 || ((int) (R_X86_64_GNU_VTINHERIT | R_X86_64_converted_reloc_bit)
4861 != (int) R_X86_64_GNU_VTINHERIT)
4862 || ((int) (R_X86_64_GNU_VTENTRY | R_X86_64_converted_reloc_bit)
4863 != (int) R_X86_64_GNU_VTENTRY))
4864 abort ();
4865
851b6fa1
L		 4866 /* This is unused for x86-64. */
4867 init_table.plt0_pad_byte = 0x90;
4868
4869 if (get_elf_x86_backend_data (info->output_bfd)->target_os
4870 == is_normal)
73784fa5 4871 {
a6798bab 4872 if (info->bndplt)
ee2fdd6f 4873 {
1de031c8
L		 4874 init_table.lazy_plt = &elf_x86_64_lazy_bnd_plt;
4875 init_table.non_lazy_plt = &elf_x86_64_non_lazy_bnd_plt;
ee2fdd6f
L		 4876 }
4877 else
4878 {
1de031c8
L		 4879 init_table.lazy_plt = &elf_x86_64_lazy_plt;
4880 init_table.non_lazy_plt = &elf_x86_64_non_lazy_plt;
ee2fdd6f 4881 }
38b12349 4882
a6798bab 4883 if (ABI_64_P (info->output_bfd))
38b12349 4884 {
1de031c8
L		 4885 init_table.lazy_ibt_plt = &elf_x86_64_lazy_ibt_plt;
4886 init_table.non_lazy_ibt_plt = &elf_x86_64_non_lazy_ibt_plt;
38b12349
L		 4887 }
4888 else
4889 {
1de031c8
L		 4890 init_table.lazy_ibt_plt = &elf_x32_lazy_ibt_plt;
4891 init_table.non_lazy_ibt_plt = &elf_x32_non_lazy_ibt_plt;
38b12349 4892 }
38b12349
L		 4893 }
4894 else
4895 {
1de031c8
L		 4896 init_table.lazy_plt = &elf_x86_64_nacl_plt;
4897 init_table.non_lazy_plt = NULL;
4898 init_table.lazy_ibt_plt = NULL;
4899 init_table.non_lazy_ibt_plt = NULL;
38b12349
L		 4900 }
4901
7a382c1c
L		 4902 if (ABI_64_P (info->output_bfd))
4903 {
1de031c8
L		 4904 init_table.r_info = elf64_r_info;
4905 init_table.r_sym = elf64_r_sym;
7a382c1c
L		 4906 }
4907 else
4908 {
1de031c8
L		 4909 init_table.r_info = elf32_r_info;
4910 init_table.r_sym = elf32_r_sym;
7a382c1c
L		 4911 }
4912
1de031c8 4913 return _bfd_x86_elf_link_setup_gnu_properties (info, &init_table);
38b12349
L		 4914}
4915
9a2e389a 4916static const struct bfd_elf_special_section
46bed679 4917elf_x86_64_special_sections[]=
3b22753a 4918{
0112cd26
NC		 4919 { STRING_COMMA_LEN (".gnu.linkonce.lb"), -2, SHT_NOBITS, SHF_ALLOC + SHF_WRITE + SHF_X86_64_LARGE},
4920 { STRING_COMMA_LEN (".gnu.linkonce.lr"), -2, SHT_PROGBITS, SHF_ALLOC + SHF_X86_64_LARGE},
4921 { STRING_COMMA_LEN (".gnu.linkonce.lt"), -2, SHT_PROGBITS, SHF_ALLOC + SHF_EXECINSTR + SHF_X86_64_LARGE},
07d6d2b8 4922 { STRING_COMMA_LEN (".lbss"), -2, SHT_NOBITS, SHF_ALLOC + SHF_WRITE + SHF_X86_64_LARGE},
0112cd26
NC		 4923 { STRING_COMMA_LEN (".ldata"), -2, SHT_PROGBITS, SHF_ALLOC + SHF_WRITE + SHF_X86_64_LARGE},
4924 { STRING_COMMA_LEN (".lrodata"), -2, SHT_PROGBITS, SHF_ALLOC + SHF_X86_64_LARGE},
07d6d2b8 4925 { NULL, 0, 0, 0, 0 }
3b22753a
L		 4926};
4927
6d00b590 4928#define TARGET_LITTLE_SYM x86_64_elf64_vec
70256ad8
AJ		 4929#define TARGET_LITTLE_NAME "elf64-x86-64"
4930#define ELF_ARCH bfd_arch_i386
ae95ffa6 4931#define ELF_TARGET_ID X86_64_ELF_DATA
70256ad8 4932#define ELF_MACHINE_CODE EM_X86_64
f7661549 4933#define ELF_MAXPAGESIZE 0x200000
2043964e 4934#define ELF_MINPAGESIZE 0x1000
24718e3b 4935#define ELF_COMMONPAGESIZE 0x1000
70256ad8
AJ		 4936
4937#define elf_backend_can_gc_sections 1
51b64d56 4938#define elf_backend_can_refcount 1
70256ad8
AJ		 4939#define elf_backend_want_got_plt 1
4940#define elf_backend_plt_readonly 1
4941#define elf_backend_want_plt_sym 0
4942#define elf_backend_got_header_size (GOT_ENTRY_SIZE*3)
b491616a 4943#define elf_backend_rela_normal 1
07d6d2b8 4944#define elf_backend_plt_alignment 4
f7483970 4945#define elf_backend_extern_protected_data 1
bedfd056 4946#define elf_backend_caches_rawsize 1
64f52338 4947#define elf_backend_dtrel_excludes_plt 1
5474d94f 4948#define elf_backend_want_dynrelro 1
70256ad8 4949
351f65ca 4950#define elf_info_to_howto elf_x86_64_info_to_howto
70256ad8 4951
351f65ca 4952#define bfd_elf64_bfd_reloc_type_lookup elf_x86_64_reloc_type_lookup
157090f7 4953#define bfd_elf64_bfd_reloc_name_lookup \
351f65ca 4954 elf_x86_64_reloc_name_lookup
70256ad8 4955
c543bf9a 4956#define elf_backend_relocs_compatible elf_x86_64_relocs_compatible
351f65ca 4957#define elf_backend_check_relocs elf_x86_64_check_relocs
38b12349 4958#define elf_backend_create_dynamic_sections _bfd_elf_create_dynamic_sections
351f65ca
L		 4959#define elf_backend_finish_dynamic_sections elf_x86_64_finish_dynamic_sections
4960#define elf_backend_finish_dynamic_symbol elf_x86_64_finish_dynamic_symbol
233cc9c1 4961#define elf_backend_output_arch_local_syms elf_x86_64_output_arch_local_syms
351f65ca
L		 4962#define elf_backend_grok_prstatus elf_x86_64_grok_prstatus
4963#define elf_backend_grok_psinfo elf_x86_64_grok_psinfo
8fd79e71
L		 4964#ifdef CORE_HEADER
4965#define elf_backend_write_core_note elf_x86_64_write_core_note
4966#endif
351f65ca
L		 4967#define elf_backend_reloc_type_class elf_x86_64_reloc_type_class
4968#define elf_backend_relocate_section elf_x86_64_relocate_section
74541ad4 4969#define elf_backend_init_index_section _bfd_elf_init_1_index_section
407443a3 4970#define elf_backend_object_p elf64_x86_64_elf_object_p
0ff2b86e 4971#define bfd_elf64_get_synthetic_symtab elf_x86_64_get_synthetic_symtab
8d88c4ca 4972
d2b2c203 4973#define elf_backend_section_from_shdr \
351f65ca 4974 elf_x86_64_section_from_shdr
d2b2c203 4975
3b22753a 4976#define elf_backend_section_from_bfd_section \
351f65ca 4977 elf_x86_64_elf_section_from_bfd_section
3b22753a 4978#define elf_backend_add_symbol_hook \
351f65ca 4979 elf_x86_64_add_symbol_hook
3b22753a 4980#define elf_backend_symbol_processing \
351f65ca 4981 elf_x86_64_symbol_processing
3b22753a 4982#define elf_backend_common_section_index \
351f65ca 4983 elf_x86_64_common_section_index
3b22753a 4984#define elf_backend_common_section \
351f65ca 4985 elf_x86_64_common_section
3b22753a 4986#define elf_backend_common_definition \
351f65ca 4987 elf_x86_64_common_definition
3b22753a 4988#define elf_backend_merge_symbol \
351f65ca 4989 elf_x86_64_merge_symbol
3b22753a 4990#define elf_backend_special_sections \
351f65ca 4991 elf_x86_64_special_sections
3b22753a 4992#define elf_backend_additional_program_headers \
351f65ca 4993 elf_x86_64_additional_program_headers
38b12349 4994#define elf_backend_setup_gnu_properties \
9f857535
L		 4995 elf_x86_64_link_setup_gnu_properties
4996#define elf_backend_hide_symbol \
4997 _bfd_x86_elf_hide_symbol
3b22753a 4998
8d88c4ca 4999#include "elf64-target.h"
9d7cbccd 5000
6036f486
ES		 5001/* CloudABI support. */
5002
07d6d2b8 5003#undef TARGET_LITTLE_SYM
6036f486 5004#define TARGET_LITTLE_SYM x86_64_elf64_cloudabi_vec
07d6d2b8 5005#undef TARGET_LITTLE_NAME
6036f486
ES		 5006#define TARGET_LITTLE_NAME "elf64-x86-64-cloudabi"
5007
5008#undef ELF_OSABI
5009#define ELF_OSABI ELFOSABI_CLOUDABI
5010
07d6d2b8 5011#undef elf64_bed
6036f486
ES		 5012#define elf64_bed elf64_x86_64_cloudabi_bed
5013
5014#include "elf64-target.h"
5015
9d7cbccd
NC		 5016/* FreeBSD support. */
5017
07d6d2b8 5018#undef TARGET_LITTLE_SYM
6d00b590 5019#define TARGET_LITTLE_SYM x86_64_elf64_fbsd_vec
07d6d2b8 5020#undef TARGET_LITTLE_NAME
9d7cbccd
NC		 5021#define TARGET_LITTLE_NAME "elf64-x86-64-freebsd"
5022
d1036acb
L		 5023#undef ELF_OSABI
5024#define ELF_OSABI ELFOSABI_FREEBSD
9d7cbccd 5025
07d6d2b8 5026#undef elf64_bed
9d7cbccd
NC		 5027#define elf64_bed elf64_x86_64_fbsd_bed
5028
5029#include "elf64-target.h"
8a9036a4 5030
a6cc6b3b
RO		 5031/* Solaris 2 support. */
5032
5033#undef TARGET_LITTLE_SYM
6d00b590 5034#define TARGET_LITTLE_SYM x86_64_elf64_sol2_vec
a6cc6b3b
RO		 5035#undef TARGET_LITTLE_NAME
5036#define TARGET_LITTLE_NAME "elf64-x86-64-sol2"
5037
5038/* Restore default: we cannot use ELFOSABI_SOLARIS, otherwise ELFOSABI_NONE
5039 objects won't be recognized. */
5040#undef ELF_OSABI
5041
5042#undef elf64_bed
5043#define elf64_bed elf64_x86_64_sol2_bed
5044
7dc98aea
RO		 5045/* The 64-bit static TLS arena size is rounded to the nearest 16-byte
5046 boundary. */
84865015 5047#undef elf_backend_static_tls_alignment
7dc98aea
RO		 5048#define elf_backend_static_tls_alignment 16
5049
a6cc6b3b
RO		 5050/* The Solaris 2 ABI requires a plt symbol on all platforms.
5051
5052 Cf. Linker and Libraries Guide, Ch. 2, Link-Editor, Generating the Output
5053 File, p.63. */
84865015 5054#undef elf_backend_want_plt_sym
a6cc6b3b
RO		 5055#define elf_backend_want_plt_sym 1
5056
84865015
NC		 5057#undef elf_backend_strtab_flags
5058#define elf_backend_strtab_flags SHF_STRINGS
5059
5060static bfd_boolean
5522f910
NC		 5061elf64_x86_64_copy_solaris_special_section_fields (const bfd *ibfd ATTRIBUTE_UNUSED,
5062 bfd *obfd ATTRIBUTE_UNUSED,
5063 const Elf_Internal_Shdr *isection ATTRIBUTE_UNUSED,
5064 Elf_Internal_Shdr *osection ATTRIBUTE_UNUSED)
84865015
NC		 5065{
5066 /* PR 19938: FIXME: Need to add code for setting the sh_info
5067 and sh_link fields of Solaris specific section types. */
5068 return FALSE;
5069}
5070
5522f910
NC		 5071#undef elf_backend_copy_special_section_fields
5072#define elf_backend_copy_special_section_fields elf64_x86_64_copy_solaris_special_section_fields
84865015 5073
a6cc6b3b
RO		 5074#include "elf64-target.h"
5075
8059fb19
RM		 5076/* Native Client support. */
5077
64b384e1
RM		 5078static bfd_boolean
5079elf64_x86_64_nacl_elf_object_p (bfd *abfd)
5080{
5081 /* Set the right machine number for a NaCl x86-64 ELF64 file. */
5082 bfd_default_set_arch_mach (abfd, bfd_arch_i386, bfd_mach_x86_64_nacl);
5083 return TRUE;
5084}
5085
8059fb19 5086#undef TARGET_LITTLE_SYM
6d00b590 5087#define TARGET_LITTLE_SYM x86_64_elf64_nacl_vec
8059fb19
RM		 5088#undef TARGET_LITTLE_NAME
5089#define TARGET_LITTLE_NAME "elf64-x86-64-nacl"
5090#undef elf64_bed
5091#define elf64_bed elf64_x86_64_nacl_bed
5092
5093#undef ELF_MAXPAGESIZE
5094#undef ELF_MINPAGESIZE
5095#undef ELF_COMMONPAGESIZE
5096#define ELF_MAXPAGESIZE 0x10000
5097#define ELF_MINPAGESIZE 0x10000
5098#define ELF_COMMONPAGESIZE 0x10000
5099
5100/* Restore defaults. */
5101#undef ELF_OSABI
5102#undef elf_backend_static_tls_alignment
5103#undef elf_backend_want_plt_sym
5104#define elf_backend_want_plt_sym 0
84865015 5105#undef elf_backend_strtab_flags
5522f910 5106#undef elf_backend_copy_special_section_fields
8059fb19
RM		 5107
5108/* NaCl uses substantially different PLT entries for the same effects. */
5109
5110#undef elf_backend_plt_alignment
5111#define elf_backend_plt_alignment 5
5112#define NACL_PLT_ENTRY_SIZE 64
5113#define NACLMASK 0xe0 /* 32-byte alignment mask. */
5114
5115static const bfd_byte elf_x86_64_nacl_plt0_entry[NACL_PLT_ENTRY_SIZE] =
5116 {
07d6d2b8 5117 0xff, 0x35, 8, 0, 0, 0, /* pushq GOT+8(%rip) */
8059fb19 5118 0x4c, 0x8b, 0x1d, 16, 0, 0, 0, /* mov GOT+16(%rip), %r11 */
07d6d2b8
AM		 5119 0x41, 0x83, 0xe3, NACLMASK, /* and $-32, %r11d */
5120 0x4d, 0x01, 0xfb, /* add %r15, %r11 */
5121 0x41, 0xff, 0xe3, /* jmpq *%r11 */
8059fb19 5122
ea2d813e 5123 /* 9-byte nop sequence to pad out to the next 32-byte boundary. */
70cc877f 5124 0x66, 0x0f, 0x1f, 0x84, 0, 0, 0, 0, 0, /* nopw 0x0(%rax,%rax,1) */
ea2d813e
RM		 5125
5126 /* 32 bytes of nop to pad out to the standard size. */
3ddf1bdd 5127 0x66, 0x66, 0x66, 0x66, 0x66, 0x66, /* excess data16 prefixes */
8059fb19 5128 0x2e, 0x0f, 0x1f, 0x84, 0, 0, 0, 0, 0, /* nopw %cs:0x0(%rax,%rax,1) */
3ddf1bdd 5129 0x66, 0x66, 0x66, 0x66, 0x66, 0x66, /* excess data16 prefixes */
8059fb19 5130 0x2e, 0x0f, 0x1f, 0x84, 0, 0, 0, 0, 0, /* nopw %cs:0x0(%rax,%rax,1) */
07d6d2b8
AM		 5131 0x66, /* excess data16 prefix */
5132 0x90 /* nop */
8059fb19
RM		 5133 };
5134
5135static const bfd_byte elf_x86_64_nacl_plt_entry[NACL_PLT_ENTRY_SIZE] =
5136 {
5137 0x4c, 0x8b, 0x1d, 0, 0, 0, 0, /* mov name@GOTPCREL(%rip),%r11 */
07d6d2b8
AM		 5138 0x41, 0x83, 0xe3, NACLMASK, /* and $-32, %r11d */
5139 0x4d, 0x01, 0xfb, /* add %r15, %r11 */
5140 0x41, 0xff, 0xe3, /* jmpq *%r11 */
8059fb19
RM		 5141
5142 /* 15-byte nop sequence to pad out to the next 32-byte boundary. */
3ddf1bdd 5143 0x66, 0x66, 0x66, 0x66, 0x66, 0x66, /* excess data16 prefixes */
8059fb19
RM		 5144 0x2e, 0x0f, 0x1f, 0x84, 0, 0, 0, 0, 0, /* nopw %cs:0x0(%rax,%rax,1) */
5145
5146 /* Lazy GOT entries point here (32-byte aligned). */
07d6d2b8
AM		 5147 0x68, /* pushq immediate */
5148 0, 0, 0, 0, /* replaced with index into relocation table. */
5149 0xe9, /* jmp relative */
5150 0, 0, 0, 0, /* replaced with offset to start of .plt0. */
8059fb19 5151
07d6d2b8 5152 /* 22 bytes of nop to pad out to the standard size. */
3ddf1bdd 5153 0x66, 0x66, 0x66, 0x66, 0x66, 0x66, /* excess data16 prefixes */
8059fb19 5154 0x2e, 0x0f, 0x1f, 0x84, 0, 0, 0, 0, 0, /* nopw %cs:0x0(%rax,%rax,1) */
07d6d2b8 5155 0x0f, 0x1f, 0x80, 0, 0, 0, 0, /* nopl 0x0(%rax) */
8059fb19
RM		 5156 };
5157
5158/* .eh_frame covering the .plt section. */
5159
5160static const bfd_byte elf_x86_64_nacl_eh_frame_plt[] =
5161 {
07d6d2b8
AM		 5162#if (PLT_CIE_LENGTH != 20 \
5163 || PLT_FDE_LENGTH != 36 \
5164 || PLT_FDE_START_OFFSET != 4 + PLT_CIE_LENGTH + 8 \
8059fb19 5165 || PLT_FDE_LEN_OFFSET != 4 + PLT_CIE_LENGTH + 12)
851b6fa1 5166# error "Need elf_x86_backend_data parameters for eh_frame_plt offsets!"
8059fb19
RM		 5167#endif
5168 PLT_CIE_LENGTH, 0, 0, 0, /* CIE length */
5169 0, 0, 0, 0, /* CIE ID */
5170 1, /* CIE version */
07d6d2b8 5171 'z', 'R', 0, /* Augmentation string */
8059fb19 5172 1, /* Code alignment factor */
07d6d2b8 5173 0x78, /* Data alignment factor */
8059fb19
RM		 5174 16, /* Return address column */
5175 1, /* Augmentation size */
5176 DW_EH_PE_pcrel | DW_EH_PE_sdata4, /* FDE encoding */
5177 DW_CFA_def_cfa, 7, 8, /* DW_CFA_def_cfa: r7 (rsp) ofs 8 */
5178 DW_CFA_offset + 16, 1, /* DW_CFA_offset: r16 (rip) at cfa-8 */
5179 DW_CFA_nop, DW_CFA_nop,
5180
5181 PLT_FDE_LENGTH, 0, 0, 0, /* FDE length */
5182 PLT_CIE_LENGTH + 8, 0, 0, 0,/* CIE pointer */
5183 0, 0, 0, 0, /* R_X86_64_PC32 .plt goes here */
5184 0, 0, 0, 0, /* .plt size goes here */
5185 0, /* Augmentation size */
5186 DW_CFA_def_cfa_offset, 16, /* DW_CFA_def_cfa_offset: 16 */
5187 DW_CFA_advance_loc + 6, /* DW_CFA_advance_loc: 6 to __PLT__+6 */
5188 DW_CFA_def_cfa_offset, 24, /* DW_CFA_def_cfa_offset: 24 */
5189 DW_CFA_advance_loc + 58, /* DW_CFA_advance_loc: 58 to __PLT__+64 */
5190 DW_CFA_def_cfa_expression, /* DW_CFA_def_cfa_expression */
5191 13, /* Block length */
5192 DW_OP_breg7, 8, /* DW_OP_breg7 (rsp): 8 */
5193 DW_OP_breg16, 0, /* DW_OP_breg16 (rip): 0 */
5194 DW_OP_const1u, 63, DW_OP_and, DW_OP_const1u, 37, DW_OP_ge,
5195 DW_OP_lit3, DW_OP_shl, DW_OP_plus,
5196 DW_CFA_nop, DW_CFA_nop
5197 };
5198
765e526c 5199static const struct elf_x86_lazy_plt_layout elf_x86_64_nacl_plt =
8059fb19 5200 {
07d6d2b8
AM		 5201 elf_x86_64_nacl_plt0_entry, /* plt0_entry */
5202 NACL_PLT_ENTRY_SIZE, /* plt0_entry_size */
5203 elf_x86_64_nacl_plt_entry, /* plt_entry */
5204 NACL_PLT_ENTRY_SIZE, /* plt_entry_size */
5205 2, /* plt0_got1_offset */
5206 9, /* plt0_got2_offset */
5207 13, /* plt0_got2_insn_end */
5208 3, /* plt_got_offset */
5209 33, /* plt_reloc_offset */
5210 38, /* plt_plt_offset */
5211 7, /* plt_got_insn_size */
5212 42, /* plt_plt_insn_end */
5213 32, /* plt_lazy_offset */
5214 elf_x86_64_nacl_plt0_entry, /* pic_plt0_entry */
5215 elf_x86_64_nacl_plt_entry, /* pic_plt_entry */
5216 elf_x86_64_nacl_eh_frame_plt, /* eh_frame_plt */
38b12349
L		 5217 sizeof (elf_x86_64_nacl_eh_frame_plt) /* eh_frame_plt_size */
5218 };
5219
851b6fa1 5220static const struct elf_x86_backend_data elf_x86_64_nacl_arch_bed =
38b12349 5221 {
07d6d2b8 5222 is_nacl /* os */
8059fb19
RM		 5223 };
5224
5225#undef elf_backend_arch_data
5226#define elf_backend_arch_data &elf_x86_64_nacl_arch_bed
5227
64b384e1
RM		 5228#undef elf_backend_object_p
5229#define elf_backend_object_p elf64_x86_64_nacl_elf_object_p
5a68afcf
RM		 5230#undef elf_backend_modify_segment_map
5231#define elf_backend_modify_segment_map nacl_modify_segment_map
5232#undef elf_backend_modify_program_headers
5233#define elf_backend_modify_program_headers nacl_modify_program_headers
887badb3
RM		 5234#undef elf_backend_final_write_processing
5235#define elf_backend_final_write_processing nacl_final_write_processing
5a68afcf 5236
8059fb19
RM		 5237#include "elf64-target.h"
5238
5239/* Native Client x32 support. */
5240
64b384e1
RM		 5241static bfd_boolean
5242elf32_x86_64_nacl_elf_object_p (bfd *abfd)
5243{
5244 /* Set the right machine number for a NaCl x86-64 ELF32 file. */
5245 bfd_default_set_arch_mach (abfd, bfd_arch_i386, bfd_mach_x64_32_nacl);
5246 return TRUE;
5247}
5248
07d6d2b8 5249#undef TARGET_LITTLE_SYM
6d00b590 5250#define TARGET_LITTLE_SYM x86_64_elf32_nacl_vec
07d6d2b8 5251#undef TARGET_LITTLE_NAME
8059fb19
RM		 5252#define TARGET_LITTLE_NAME "elf32-x86-64-nacl"
5253#undef elf32_bed
5254#define elf32_bed elf32_x86_64_nacl_bed
5255
8059fb19
RM		 5256#define bfd_elf32_bfd_reloc_type_lookup \
5257 elf_x86_64_reloc_type_lookup
5258#define bfd_elf32_bfd_reloc_name_lookup \
5259 elf_x86_64_reloc_name_lookup
b7365e5d
L		 5260#define bfd_elf32_get_synthetic_symtab \
5261 elf_x86_64_get_synthetic_symtab
8059fb19
RM		 5262
5263#undef elf_backend_object_p
5264#define elf_backend_object_p \
64b384e1 5265 elf32_x86_64_nacl_elf_object_p
8059fb19
RM		 5266
5267#undef elf_backend_bfd_from_remote_memory
5268#define elf_backend_bfd_from_remote_memory \
5269 _bfd_elf32_bfd_from_remote_memory
5270
5271#undef elf_backend_size_info
5272#define elf_backend_size_info \
5273 _bfd_elf32_size_info
5274
5275#include "elf32-target.h"
5276
5277/* Restore defaults. */
5a68afcf 5278#undef elf_backend_object_p
8059fb19 5279#define elf_backend_object_p elf64_x86_64_elf_object_p
5a68afcf
RM		 5280#undef elf_backend_bfd_from_remote_memory
5281#undef elf_backend_size_info
5282#undef elf_backend_modify_segment_map
5283#undef elf_backend_modify_program_headers
887badb3 5284#undef elf_backend_final_write_processing
8059fb19 5285
8a9036a4
L		 5286/* Intel L1OM support. */
5287
5288static bfd_boolean
5289elf64_l1om_elf_object_p (bfd *abfd)
5290{
5291 /* Set the right machine number for an L1OM elf64 file. */
5292 bfd_default_set_arch_mach (abfd, bfd_arch_l1om, bfd_mach_l1om);
5293 return TRUE;
5294}
5295
5296#undef TARGET_LITTLE_SYM
6d00b590 5297#define TARGET_LITTLE_SYM l1om_elf64_vec
8a9036a4
L		 5298#undef TARGET_LITTLE_NAME
5299#define TARGET_LITTLE_NAME "elf64-l1om"
5300#undef ELF_ARCH
5301#define ELF_ARCH bfd_arch_l1om
5302
5303#undef ELF_MACHINE_CODE
5304#define ELF_MACHINE_CODE EM_L1OM
5305
5306#undef ELF_OSABI
5307
5308#undef elf64_bed
5309#define elf64_bed elf64_l1om_bed
5310
5311#undef elf_backend_object_p
5312#define elf_backend_object_p elf64_l1om_elf_object_p
5313
8059fb19
RM		 5314/* Restore defaults. */
5315#undef ELF_MAXPAGESIZE
5316#undef ELF_MINPAGESIZE
5317#undef ELF_COMMONPAGESIZE
5318#define ELF_MAXPAGESIZE 0x200000
5319#define ELF_MINPAGESIZE 0x1000
5320#define ELF_COMMONPAGESIZE 0x1000
5321#undef elf_backend_plt_alignment
5322#define elf_backend_plt_alignment 4
5323#undef elf_backend_arch_data
5324#define elf_backend_arch_data &elf_x86_64_arch_bed
1a0c107f 5325
8a9036a4
L		 5326#include "elf64-target.h"
5327
5328/* FreeBSD L1OM support. */
5329
5330#undef TARGET_LITTLE_SYM
6d00b590 5331#define TARGET_LITTLE_SYM l1om_elf64_fbsd_vec
8a9036a4
L		 5332#undef TARGET_LITTLE_NAME
5333#define TARGET_LITTLE_NAME "elf64-l1om-freebsd"
5334
5335#undef ELF_OSABI
5336#define ELF_OSABI ELFOSABI_FREEBSD
5337
5338#undef elf64_bed
5339#define elf64_bed elf64_l1om_fbsd_bed
5340
8a9036a4 5341#include "elf64-target.h"
351f65ca 5342
7a9068fe
L		 5343/* Intel K1OM support. */
5344
5345static bfd_boolean
5346elf64_k1om_elf_object_p (bfd *abfd)
5347{
5348 /* Set the right machine number for an K1OM elf64 file. */
5349 bfd_default_set_arch_mach (abfd, bfd_arch_k1om, bfd_mach_k1om);
5350 return TRUE;
5351}
5352
5353#undef TARGET_LITTLE_SYM
6d00b590 5354#define TARGET_LITTLE_SYM k1om_elf64_vec
7a9068fe
L		 5355#undef TARGET_LITTLE_NAME
5356#define TARGET_LITTLE_NAME "elf64-k1om"
5357#undef ELF_ARCH
5358#define ELF_ARCH bfd_arch_k1om
5359
5360#undef ELF_MACHINE_CODE
5361#define ELF_MACHINE_CODE EM_K1OM
5362
5363#undef ELF_OSABI
5364
5365#undef elf64_bed
5366#define elf64_bed elf64_k1om_bed
5367
5368#undef elf_backend_object_p
5369#define elf_backend_object_p elf64_k1om_elf_object_p
5370
5371#undef elf_backend_static_tls_alignment
5372
5373#undef elf_backend_want_plt_sym
5374#define elf_backend_want_plt_sym 0
5375
5376#include "elf64-target.h"
5377
5378/* FreeBSD K1OM support. */
5379
5380#undef TARGET_LITTLE_SYM
6d00b590 5381#define TARGET_LITTLE_SYM k1om_elf64_fbsd_vec
7a9068fe
L		 5382#undef TARGET_LITTLE_NAME
5383#define TARGET_LITTLE_NAME "elf64-k1om-freebsd"
5384
5385#undef ELF_OSABI
5386#define ELF_OSABI ELFOSABI_FREEBSD
5387
5388#undef elf64_bed
5389#define elf64_bed elf64_k1om_fbsd_bed
5390
5391#include "elf64-target.h"
5392
351f65ca
L		 5393/* 32bit x86-64 support. */
5394
351f65ca 5395#undef TARGET_LITTLE_SYM
6d00b590 5396#define TARGET_LITTLE_SYM x86_64_elf32_vec
351f65ca
L		 5397#undef TARGET_LITTLE_NAME
5398#define TARGET_LITTLE_NAME "elf32-x86-64"
8059fb19 5399#undef elf32_bed
351f65ca
L		 5400
5401#undef ELF_ARCH
5402#define ELF_ARCH bfd_arch_i386
5403
5404#undef ELF_MACHINE_CODE
5405#define ELF_MACHINE_CODE EM_X86_64
5406
351f65ca
L		 5407#undef ELF_OSABI
5408
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L		 5409#undef elf_backend_object_p
5410#define elf_backend_object_p \
5411 elf32_x86_64_elf_object_p
5412
5413#undef elf_backend_bfd_from_remote_memory
5414#define elf_backend_bfd_from_remote_memory \
5415 _bfd_elf32_bfd_from_remote_memory
5416
5417#undef elf_backend_size_info
5418#define elf_backend_size_info \
5419 _bfd_elf32_size_info
5420
5421#include "elf32-target.h"
GDB Binutils - Deliverables
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