projects / deliverable / binutils-gdb.git / blame
? search:
summary | shortlog | log | commit | commitdiff | tree
blob | blame (incremental) | history | HEAD
Make 'show width/height' display "unlimited" when capped for readline
[deliverable/binutils-gdb.git] / bfd / elf64-x86-64.c
CommitLineData
351f65ca 1/* X86-64 specific support for ELF
82704155 2 Copyright (C) 2000-2019 Free Software Foundation, Inc.
8d88c4ca
NC		 3 Contributed by Jan Hubicka <jh@suse.cz>.
4
ae9a127f 5 This file is part of BFD, the Binary File Descriptor library.
8d88c4ca 6
ae9a127f
NC		 7 This program is free software; you can redistribute it and/or modify
8 it under the terms of the GNU General Public License as published by
cd123cb7 9 the Free Software Foundation; either version 3 of the License, or
ae9a127f 10 (at your option) any later version.
8d88c4ca 11
ae9a127f
NC		 12 This program is distributed in the hope that it will be useful,
13 but WITHOUT ANY WARRANTY; without even the implied warranty of
14 MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
15 GNU General Public License for more details.
8d88c4ca 16
ae9a127f
NC		 17 You should have received a copy of the GNU General Public License
18 along with this program; if not, write to the Free Software
cd123cb7
NC		 19 Foundation, Inc., 51 Franklin Street - Fifth Floor, Boston,
20 MA 02110-1301, USA. */
8d88c4ca 21
0afcef53 22#include "elfxx-x86.h"
5a68afcf 23#include "elf-nacl.h"
e41b3a13 24#include "dwarf2.h"
d7921315 25#include "libiberty.h"
8d88c4ca 26
56ceb5b5 27#include "opcode/i386.h"
8d88c4ca
NC		 28#include "elf/x86-64.h"
29
8fd79e71
L		 30#ifdef CORE_HEADER
31#include <stdarg.h>
32#include CORE_HEADER
33#endif
34
8d88c4ca
NC		 35/* In case we're on a 32-bit machine, construct a 64-bit "-1" value. */
36#define MINUS_ONE (~ (bfd_vma) 0)
37
351f65ca
L		 38/* Since both 32-bit and 64-bit x86-64 encode relocation type in the
39 identical manner, we use ELF32_R_TYPE instead of ELF64_R_TYPE to get
40 relocation type. We also use ELF_ST_TYPE instead of ELF64_ST_TYPE
41 since they are the same. */
42
8d88c4ca 43/* The relocation "howto" table. Order of fields:
7b81dfbb
AJ		 44 type, rightshift, size, bitsize, pc_relative, bitpos, complain_on_overflow,
45 special_function, name, partial_inplace, src_mask, dst_mask, pcrel_offset. */
70256ad8
AJ		 46static reloc_howto_type x86_64_elf_howto_table[] =
47{
6346d5ca 48 HOWTO(R_X86_64_NONE, 0, 3, 0, FALSE, 0, complain_overflow_dont,
b34976b6
AM		 49 bfd_elf_generic_reloc, "R_X86_64_NONE", FALSE, 0x00000000, 0x00000000,
50 FALSE),
51 HOWTO(R_X86_64_64, 0, 4, 64, FALSE, 0, complain_overflow_bitfield,
52 bfd_elf_generic_reloc, "R_X86_64_64", FALSE, MINUS_ONE, MINUS_ONE,
53 FALSE),
54 HOWTO(R_X86_64_PC32, 0, 2, 32, TRUE, 0, complain_overflow_signed,
55 bfd_elf_generic_reloc, "R_X86_64_PC32", FALSE, 0xffffffff, 0xffffffff,
56 TRUE),
57 HOWTO(R_X86_64_GOT32, 0, 2, 32, FALSE, 0, complain_overflow_signed,
58 bfd_elf_generic_reloc, "R_X86_64_GOT32", FALSE, 0xffffffff, 0xffffffff,
59 FALSE),
60 HOWTO(R_X86_64_PLT32, 0, 2, 32, TRUE, 0, complain_overflow_signed,
61 bfd_elf_generic_reloc, "R_X86_64_PLT32", FALSE, 0xffffffff, 0xffffffff,
62 TRUE),
63 HOWTO(R_X86_64_COPY, 0, 2, 32, FALSE, 0, complain_overflow_bitfield,
64 bfd_elf_generic_reloc, "R_X86_64_COPY", FALSE, 0xffffffff, 0xffffffff,
65 FALSE),
66 HOWTO(R_X86_64_GLOB_DAT, 0, 4, 64, FALSE, 0, complain_overflow_bitfield,
67 bfd_elf_generic_reloc, "R_X86_64_GLOB_DAT", FALSE, MINUS_ONE,
68 MINUS_ONE, FALSE),
69 HOWTO(R_X86_64_JUMP_SLOT, 0, 4, 64, FALSE, 0, complain_overflow_bitfield,
70 bfd_elf_generic_reloc, "R_X86_64_JUMP_SLOT", FALSE, MINUS_ONE,
71 MINUS_ONE, FALSE),
72 HOWTO(R_X86_64_RELATIVE, 0, 4, 64, FALSE, 0, complain_overflow_bitfield,
73 bfd_elf_generic_reloc, "R_X86_64_RELATIVE", FALSE, MINUS_ONE,
74 MINUS_ONE, FALSE),
75 HOWTO(R_X86_64_GOTPCREL, 0, 2, 32, TRUE, 0, complain_overflow_signed,
76 bfd_elf_generic_reloc, "R_X86_64_GOTPCREL", FALSE, 0xffffffff,
77 0xffffffff, TRUE),
78 HOWTO(R_X86_64_32, 0, 2, 32, FALSE, 0, complain_overflow_unsigned,
79 bfd_elf_generic_reloc, "R_X86_64_32", FALSE, 0xffffffff, 0xffffffff,
80 FALSE),
81 HOWTO(R_X86_64_32S, 0, 2, 32, FALSE, 0, complain_overflow_signed,
82 bfd_elf_generic_reloc, "R_X86_64_32S", FALSE, 0xffffffff, 0xffffffff,
83 FALSE),
84 HOWTO(R_X86_64_16, 0, 1, 16, FALSE, 0, complain_overflow_bitfield,
85 bfd_elf_generic_reloc, "R_X86_64_16", FALSE, 0xffff, 0xffff, FALSE),
b0360d8c 86 HOWTO(R_X86_64_PC16,0, 1, 16, TRUE, 0, complain_overflow_bitfield,
b34976b6 87 bfd_elf_generic_reloc, "R_X86_64_PC16", FALSE, 0xffff, 0xffff, TRUE),
ac2aa337 88 HOWTO(R_X86_64_8, 0, 0, 8, FALSE, 0, complain_overflow_bitfield,
b34976b6
AM		 89 bfd_elf_generic_reloc, "R_X86_64_8", FALSE, 0xff, 0xff, FALSE),
90 HOWTO(R_X86_64_PC8, 0, 0, 8, TRUE, 0, complain_overflow_signed,
91 bfd_elf_generic_reloc, "R_X86_64_PC8", FALSE, 0xff, 0xff, TRUE),
92 HOWTO(R_X86_64_DTPMOD64, 0, 4, 64, FALSE, 0, complain_overflow_bitfield,
93 bfd_elf_generic_reloc, "R_X86_64_DTPMOD64", FALSE, MINUS_ONE,
94 MINUS_ONE, FALSE),
95 HOWTO(R_X86_64_DTPOFF64, 0, 4, 64, FALSE, 0, complain_overflow_bitfield,
96 bfd_elf_generic_reloc, "R_X86_64_DTPOFF64", FALSE, MINUS_ONE,
97 MINUS_ONE, FALSE),
98 HOWTO(R_X86_64_TPOFF64, 0, 4, 64, FALSE, 0, complain_overflow_bitfield,
99 bfd_elf_generic_reloc, "R_X86_64_TPOFF64", FALSE, MINUS_ONE,
100 MINUS_ONE, FALSE),
101 HOWTO(R_X86_64_TLSGD, 0, 2, 32, TRUE, 0, complain_overflow_signed,
102 bfd_elf_generic_reloc, "R_X86_64_TLSGD", FALSE, 0xffffffff,
103 0xffffffff, TRUE),
104 HOWTO(R_X86_64_TLSLD, 0, 2, 32, TRUE, 0, complain_overflow_signed,
105 bfd_elf_generic_reloc, "R_X86_64_TLSLD", FALSE, 0xffffffff,
106 0xffffffff, TRUE),
ac2aa337 107 HOWTO(R_X86_64_DTPOFF32, 0, 2, 32, FALSE, 0, complain_overflow_signed,
b34976b6
AM		 108 bfd_elf_generic_reloc, "R_X86_64_DTPOFF32", FALSE, 0xffffffff,
109 0xffffffff, FALSE),
110 HOWTO(R_X86_64_GOTTPOFF, 0, 2, 32, TRUE, 0, complain_overflow_signed,
111 bfd_elf_generic_reloc, "R_X86_64_GOTTPOFF", FALSE, 0xffffffff,
112 0xffffffff, TRUE),
113 HOWTO(R_X86_64_TPOFF32, 0, 2, 32, FALSE, 0, complain_overflow_signed,
114 bfd_elf_generic_reloc, "R_X86_64_TPOFF32", FALSE, 0xffffffff,
115 0xffffffff, FALSE),
d6ab8113
JB		 116 HOWTO(R_X86_64_PC64, 0, 4, 64, TRUE, 0, complain_overflow_bitfield,
117 bfd_elf_generic_reloc, "R_X86_64_PC64", FALSE, MINUS_ONE, MINUS_ONE,
118 TRUE),
119 HOWTO(R_X86_64_GOTOFF64, 0, 4, 64, FALSE, 0, complain_overflow_bitfield,
120 bfd_elf_generic_reloc, "R_X86_64_GOTOFF64",
121 FALSE, MINUS_ONE, MINUS_ONE, FALSE),
122 HOWTO(R_X86_64_GOTPC32, 0, 2, 32, TRUE, 0, complain_overflow_signed,
123 bfd_elf_generic_reloc, "R_X86_64_GOTPC32",
124 FALSE, 0xffffffff, 0xffffffff, TRUE),
7b81dfbb
AJ		 125 HOWTO(R_X86_64_GOT64, 0, 4, 64, FALSE, 0, complain_overflow_signed,
126 bfd_elf_generic_reloc, "R_X86_64_GOT64", FALSE, MINUS_ONE, MINUS_ONE,
127 FALSE),
128 HOWTO(R_X86_64_GOTPCREL64, 0, 4, 64, TRUE, 0, complain_overflow_signed,
129 bfd_elf_generic_reloc, "R_X86_64_GOTPCREL64", FALSE, MINUS_ONE,
130 MINUS_ONE, TRUE),
131 HOWTO(R_X86_64_GOTPC64, 0, 4, 64, TRUE, 0, complain_overflow_signed,
132 bfd_elf_generic_reloc, "R_X86_64_GOTPC64",
133 FALSE, MINUS_ONE, MINUS_ONE, TRUE),
134 HOWTO(R_X86_64_GOTPLT64, 0, 4, 64, FALSE, 0, complain_overflow_signed,
135 bfd_elf_generic_reloc, "R_X86_64_GOTPLT64", FALSE, MINUS_ONE,
136 MINUS_ONE, FALSE),
137 HOWTO(R_X86_64_PLTOFF64, 0, 4, 64, FALSE, 0, complain_overflow_signed,
138 bfd_elf_generic_reloc, "R_X86_64_PLTOFF64", FALSE, MINUS_ONE,
139 MINUS_ONE, FALSE),
1788fc08
L		 140 HOWTO(R_X86_64_SIZE32, 0, 2, 32, FALSE, 0, complain_overflow_unsigned,
141 bfd_elf_generic_reloc, "R_X86_64_SIZE32", FALSE, 0xffffffff, 0xffffffff,
142 FALSE),
143 HOWTO(R_X86_64_SIZE64, 0, 4, 64, FALSE, 0, complain_overflow_unsigned,
144 bfd_elf_generic_reloc, "R_X86_64_SIZE64", FALSE, MINUS_ONE, MINUS_ONE,
145 FALSE),
67a4f2b7
AO		 146 HOWTO(R_X86_64_GOTPC32_TLSDESC, 0, 2, 32, TRUE, 0,
147 complain_overflow_bitfield, bfd_elf_generic_reloc,
148 "R_X86_64_GOTPC32_TLSDESC",
149 FALSE, 0xffffffff, 0xffffffff, TRUE),
150 HOWTO(R_X86_64_TLSDESC_CALL, 0, 0, 0, FALSE, 0,
151 complain_overflow_dont, bfd_elf_generic_reloc,
152 "R_X86_64_TLSDESC_CALL",
153 FALSE, 0, 0, FALSE),
154 HOWTO(R_X86_64_TLSDESC, 0, 4, 64, FALSE, 0,
155 complain_overflow_bitfield, bfd_elf_generic_reloc,
156 "R_X86_64_TLSDESC",
157 FALSE, MINUS_ONE, MINUS_ONE, FALSE),
cbe950e9
L		 158 HOWTO(R_X86_64_IRELATIVE, 0, 4, 64, FALSE, 0, complain_overflow_bitfield,
159 bfd_elf_generic_reloc, "R_X86_64_IRELATIVE", FALSE, MINUS_ONE,
160 MINUS_ONE, FALSE),
64d25c44
L		 161 HOWTO(R_X86_64_RELATIVE64, 0, 4, 64, FALSE, 0, complain_overflow_bitfield,
162 bfd_elf_generic_reloc, "R_X86_64_RELATIVE64", FALSE, MINUS_ONE,
163 MINUS_ONE, FALSE),
c3320543
L		 164 HOWTO(R_X86_64_PC32_BND, 0, 2, 32, TRUE, 0, complain_overflow_signed,
165 bfd_elf_generic_reloc, "R_X86_64_PC32_BND", FALSE, 0xffffffff, 0xffffffff,
166 TRUE),
167 HOWTO(R_X86_64_PLT32_BND, 0, 2, 32, TRUE, 0, complain_overflow_signed,
168 bfd_elf_generic_reloc, "R_X86_64_PLT32_BND", FALSE, 0xffffffff, 0xffffffff,
169 TRUE),
56ceb5b5
L		 170 HOWTO(R_X86_64_GOTPCRELX, 0, 2, 32, TRUE, 0, complain_overflow_signed,
171 bfd_elf_generic_reloc, "R_X86_64_GOTPCRELX", FALSE, 0xffffffff,
172 0xffffffff, TRUE),
173 HOWTO(R_X86_64_REX_GOTPCRELX, 0, 2, 32, TRUE, 0, complain_overflow_signed,
174 bfd_elf_generic_reloc, "R_X86_64_REX_GOTPCRELX", FALSE, 0xffffffff,
175 0xffffffff, TRUE),
fe4770f4 176
a33d77bc
JB		 177 /* We have a gap in the reloc numbers here.
178 R_X86_64_standard counts the number up to this point, and
179 R_X86_64_vt_offset is the value to subtract from a reloc type of
180 R_X86_64_GNU_VT* to form an index into this table. */
56ceb5b5 181#define R_X86_64_standard (R_X86_64_REX_GOTPCRELX + 1)
a33d77bc
JB		 182#define R_X86_64_vt_offset (R_X86_64_GNU_VTINHERIT - R_X86_64_standard)
183
fe4770f4 184/* GNU extension to record C++ vtable hierarchy. */
b34976b6
AM		 185 HOWTO (R_X86_64_GNU_VTINHERIT, 0, 4, 0, FALSE, 0, complain_overflow_dont,
186 NULL, "R_X86_64_GNU_VTINHERIT", FALSE, 0, 0, FALSE),
fe4770f4
AJ		 187
188/* GNU extension to record C++ vtable member usage. */
b34976b6
AM		 189 HOWTO (R_X86_64_GNU_VTENTRY, 0, 4, 0, FALSE, 0, complain_overflow_dont,
190 _bfd_elf_rel_vtable_reloc_fn, "R_X86_64_GNU_VTENTRY", FALSE, 0, 0,
d7921315
L		 191 FALSE),
192
193/* Use complain_overflow_bitfield on R_X86_64_32 for x32. */
194 HOWTO(R_X86_64_32, 0, 2, 32, FALSE, 0, complain_overflow_bitfield,
195 bfd_elf_generic_reloc, "R_X86_64_32", FALSE, 0xffffffff, 0xffffffff,
196 FALSE)
8d88c4ca
NC		 197};
198
78984959
L		 199/* Set if a relocation is converted from a GOTPCREL relocation. */
200#define R_X86_64_converted_reloc_bit (1 << 7)
201
daf1c414 202#define X86_PCREL_TYPE_P(TYPE) \
d8045f23
NC		 203 ( ((TYPE) == R_X86_64_PC8) \
204 || ((TYPE) == R_X86_64_PC16) \
205 || ((TYPE) == R_X86_64_PC32) \
c3320543 206 || ((TYPE) == R_X86_64_PC32_BND) \
d8045f23
NC		 207 || ((TYPE) == R_X86_64_PC64))
208
aebcc8ff
L		 209#define X86_SIZE_TYPE_P(TYPE) \
210 ((TYPE) == R_X86_64_SIZE32 || (TYPE) == R_X86_64_SIZE64)
211
8d88c4ca 212/* Map BFD relocs to the x86_64 elf relocs. */
70256ad8
AJ		 213struct elf_reloc_map
214{
8d88c4ca
NC		 215 bfd_reloc_code_real_type bfd_reloc_val;
216 unsigned char elf_reloc_val;
217};
218
dc810e39 219static const struct elf_reloc_map x86_64_reloc_map[] =
8d88c4ca 220{
70256ad8
AJ		 221 { BFD_RELOC_NONE, R_X86_64_NONE, },
222 { BFD_RELOC_64, R_X86_64_64, },
223 { BFD_RELOC_32_PCREL, R_X86_64_PC32, },
224 { BFD_RELOC_X86_64_GOT32, R_X86_64_GOT32,},
225 { BFD_RELOC_X86_64_PLT32, R_X86_64_PLT32,},
226 { BFD_RELOC_X86_64_COPY, R_X86_64_COPY, },
227 { BFD_RELOC_X86_64_GLOB_DAT, R_X86_64_GLOB_DAT, },
228 { BFD_RELOC_X86_64_JUMP_SLOT, R_X86_64_JUMP_SLOT, },
229 { BFD_RELOC_X86_64_RELATIVE, R_X86_64_RELATIVE, },
230 { BFD_RELOC_X86_64_GOTPCREL, R_X86_64_GOTPCREL, },
231 { BFD_RELOC_32, R_X86_64_32, },
232 { BFD_RELOC_X86_64_32S, R_X86_64_32S, },
233 { BFD_RELOC_16, R_X86_64_16, },
234 { BFD_RELOC_16_PCREL, R_X86_64_PC16, },
235 { BFD_RELOC_8, R_X86_64_8, },
236 { BFD_RELOC_8_PCREL, R_X86_64_PC8, },
bffbf940
JJ		 237 { BFD_RELOC_X86_64_DTPMOD64, R_X86_64_DTPMOD64, },
238 { BFD_RELOC_X86_64_DTPOFF64, R_X86_64_DTPOFF64, },
239 { BFD_RELOC_X86_64_TPOFF64, R_X86_64_TPOFF64, },
240 { BFD_RELOC_X86_64_TLSGD, R_X86_64_TLSGD, },
241 { BFD_RELOC_X86_64_TLSLD, R_X86_64_TLSLD, },
242 { BFD_RELOC_X86_64_DTPOFF32, R_X86_64_DTPOFF32, },
243 { BFD_RELOC_X86_64_GOTTPOFF, R_X86_64_GOTTPOFF, },
244 { BFD_RELOC_X86_64_TPOFF32, R_X86_64_TPOFF32, },
d6ab8113
JB		 245 { BFD_RELOC_64_PCREL, R_X86_64_PC64, },
246 { BFD_RELOC_X86_64_GOTOFF64, R_X86_64_GOTOFF64, },
247 { BFD_RELOC_X86_64_GOTPC32, R_X86_64_GOTPC32, },
7b81dfbb
AJ		 248 { BFD_RELOC_X86_64_GOT64, R_X86_64_GOT64, },
249 { BFD_RELOC_X86_64_GOTPCREL64,R_X86_64_GOTPCREL64, },
250 { BFD_RELOC_X86_64_GOTPC64, R_X86_64_GOTPC64, },
251 { BFD_RELOC_X86_64_GOTPLT64, R_X86_64_GOTPLT64, },
252 { BFD_RELOC_X86_64_PLTOFF64, R_X86_64_PLTOFF64, },
1788fc08
L		 253 { BFD_RELOC_SIZE32, R_X86_64_SIZE32, },
254 { BFD_RELOC_SIZE64, R_X86_64_SIZE64, },
67a4f2b7
AO		 255 { BFD_RELOC_X86_64_GOTPC32_TLSDESC, R_X86_64_GOTPC32_TLSDESC, },
256 { BFD_RELOC_X86_64_TLSDESC_CALL, R_X86_64_TLSDESC_CALL, },
257 { BFD_RELOC_X86_64_TLSDESC, R_X86_64_TLSDESC, },
cbe950e9 258 { BFD_RELOC_X86_64_IRELATIVE, R_X86_64_IRELATIVE, },
56ceb5b5
L		 259 { BFD_RELOC_X86_64_PC32_BND, R_X86_64_PC32_BND, },
260 { BFD_RELOC_X86_64_PLT32_BND, R_X86_64_PLT32_BND, },
261 { BFD_RELOC_X86_64_GOTPCRELX, R_X86_64_GOTPCRELX, },
262 { BFD_RELOC_X86_64_REX_GOTPCRELX, R_X86_64_REX_GOTPCRELX, },
fe4770f4
AJ		 263 { BFD_RELOC_VTABLE_INHERIT, R_X86_64_GNU_VTINHERIT, },
264 { BFD_RELOC_VTABLE_ENTRY, R_X86_64_GNU_VTENTRY, },
8d88c4ca
NC		 265};
266
67a4f2b7 267static reloc_howto_type *
351f65ca 268elf_x86_64_rtype_to_howto (bfd *abfd, unsigned r_type)
67a4f2b7
AO		 269{
270 unsigned i;
271
d7921315
L		 272 if (r_type == (unsigned int) R_X86_64_32)
273 {
274 if (ABI_64_P (abfd))
275 i = r_type;
276 else
277 i = ARRAY_SIZE (x86_64_elf_howto_table) - 1;
278 }
279 else if (r_type < (unsigned int) R_X86_64_GNU_VTINHERIT
280 || r_type >= (unsigned int) R_X86_64_max)
67a4f2b7
AO		 281 {
282 if (r_type >= (unsigned int) R_X86_64_standard)
283 {
695344c0 284 /* xgettext:c-format */
0aa13fee
AM		 285 _bfd_error_handler (_("%pB: unsupported relocation type %#x"),
286 abfd, r_type);
f3185997
NC		 287 bfd_set_error (bfd_error_bad_value);
288 return NULL;
67a4f2b7
AO		 289 }
290 i = r_type;
291 }
292 else
293 i = r_type - (unsigned int) R_X86_64_vt_offset;
294 BFD_ASSERT (x86_64_elf_howto_table[i].type == r_type);
295 return &x86_64_elf_howto_table[i];
296}
8d88c4ca
NC		 297
298/* Given a BFD reloc type, return a HOWTO structure. */
299static reloc_howto_type *
351f65ca
L		 300elf_x86_64_reloc_type_lookup (bfd *abfd,
301 bfd_reloc_code_real_type code)
8d88c4ca
NC		 302{
303 unsigned int i;
27482721 304
8d88c4ca
NC		 305 for (i = 0; i < sizeof (x86_64_reloc_map) / sizeof (struct elf_reloc_map);
306 i++)
307 {
308 if (x86_64_reloc_map[i].bfd_reloc_val == code)
351f65ca
L		 309 return elf_x86_64_rtype_to_howto (abfd,
310 x86_64_reloc_map[i].elf_reloc_val);
8d88c4ca 311 }
5860e3f8 312 return NULL;
8d88c4ca
NC		 313}
314
157090f7 315static reloc_howto_type *
d7921315 316elf_x86_64_reloc_name_lookup (bfd *abfd,
351f65ca 317 const char *r_name)
157090f7
AM		 318{
319 unsigned int i;
320
d7921315
L		 321 if (!ABI_64_P (abfd) && strcasecmp (r_name, "R_X86_64_32") == 0)
322 {
323 /* Get x32 R_X86_64_32. */
324 reloc_howto_type *reloc
325 = &x86_64_elf_howto_table[ARRAY_SIZE (x86_64_elf_howto_table) - 1];
326 BFD_ASSERT (reloc->type == (unsigned int) R_X86_64_32);
327 return reloc;
328 }
329
330 for (i = 0; i < ARRAY_SIZE (x86_64_elf_howto_table); i++)
157090f7
AM		 331 if (x86_64_elf_howto_table[i].name != NULL
332 && strcasecmp (x86_64_elf_howto_table[i].name, r_name) == 0)
333 return &x86_64_elf_howto_table[i];
334
335 return NULL;
336}
337
8d88c4ca 338/* Given an x86_64 ELF reloc type, fill in an arelent structure. */
8da6118f 339
f3185997
NC		 340static bfd_boolean
341elf_x86_64_info_to_howto (bfd *abfd, arelent *cache_ptr,
351f65ca 342 Elf_Internal_Rela *dst)
8d88c4ca 343{
67a4f2b7 344 unsigned r_type;
8d88c4ca 345
351f65ca
L		 346 r_type = ELF32_R_TYPE (dst->r_info);
347 cache_ptr->howto = elf_x86_64_rtype_to_howto (abfd, r_type);
f3185997
NC		 348 if (cache_ptr->howto == NULL)
349 return FALSE;
262c0a87 350 BFD_ASSERT (r_type == cache_ptr->howto->type || cache_ptr->howto->type == R_X86_64_NONE);
f3185997 351 return TRUE;
8d88c4ca 352}
70256ad8 353\f
3bab7989 354/* Support for core dump NOTE sections. */
b34976b6 355static bfd_boolean
351f65ca 356elf_x86_64_grok_prstatus (bfd *abfd, Elf_Internal_Note *note)
3bab7989
ML		 357{
358 int offset;
eea6121a 359 size_t size;
3bab7989
ML		 360
361 switch (note->descsz)
362 {
363 default:
b34976b6 364 return FALSE;
3bab7989 365
bcd823f1
L		 366 case 296: /* sizeof(istruct elf_prstatus) on Linux/x32 */
367 /* pr_cursig */
228e534f 368 elf_tdata (abfd)->core->signal = bfd_get_16 (abfd, note->descdata + 12);
bcd823f1
L		 369
370 /* pr_pid */
228e534f 371 elf_tdata (abfd)->core->lwpid = bfd_get_32 (abfd, note->descdata + 24);
bcd823f1
L		 372
373 /* pr_reg */
374 offset = 72;
375 size = 216;
376
377 break;
378
3bab7989
ML		 379 case 336: /* sizeof(istruct elf_prstatus) on Linux/x86_64 */
380 /* pr_cursig */
228e534f 381 elf_tdata (abfd)->core->signal
3bab7989
ML		 382 = bfd_get_16 (abfd, note->descdata + 12);
383
384 /* pr_pid */
228e534f 385 elf_tdata (abfd)->core->lwpid
3bab7989
ML		 386 = bfd_get_32 (abfd, note->descdata + 32);
387
388 /* pr_reg */
389 offset = 112;
eea6121a 390 size = 216;
3bab7989
ML		 391
392 break;
393 }
394
395 /* Make a ".reg/999" section. */
396 return _bfd_elfcore_make_pseudosection (abfd, ".reg",
eea6121a 397 size, note->descpos + offset);
3bab7989
ML		 398}
399
b34976b6 400static bfd_boolean
351f65ca 401elf_x86_64_grok_psinfo (bfd *abfd, Elf_Internal_Note *note)
3bab7989
ML		 402{
403 switch (note->descsz)
404 {
405 default:
b34976b6 406 return FALSE;
3bab7989 407
bcd823f1 408 case 124: /* sizeof(struct elf_prpsinfo) on Linux/x32 */
228e534f 409 elf_tdata (abfd)->core->pid
bcd823f1 410 = bfd_get_32 (abfd, note->descdata + 12);
228e534f 411 elf_tdata (abfd)->core->program
bcd823f1 412 = _bfd_elfcore_strndup (abfd, note->descdata + 28, 16);
228e534f 413 elf_tdata (abfd)->core->command
bcd823f1
L		 414 = _bfd_elfcore_strndup (abfd, note->descdata + 44, 80);
415 break;
416
3bab7989 417 case 136: /* sizeof(struct elf_prpsinfo) on Linux/x86_64 */
228e534f 418 elf_tdata (abfd)->core->pid
261b8d08 419 = bfd_get_32 (abfd, note->descdata + 24);
228e534f 420 elf_tdata (abfd)->core->program
3bab7989 421 = _bfd_elfcore_strndup (abfd, note->descdata + 40, 16);
228e534f 422 elf_tdata (abfd)->core->command
3bab7989
ML		 423 = _bfd_elfcore_strndup (abfd, note->descdata + 56, 80);
424 }
425
426 /* Note that for some reason, a spurious space is tacked
427 onto the end of the args in some (at least one anyway)
428 implementations, so strip it off if it exists. */
429
430 {
228e534f 431 char *command = elf_tdata (abfd)->core->command;
3bab7989
ML		 432 int n = strlen (command);
433
434 if (0 < n && command[n - 1] == ' ')
435 command[n - 1] = '\0';
436 }
437
b34976b6 438 return TRUE;
3bab7989 439}
8fd79e71
L		 440
441#ifdef CORE_HEADER
602f1657
AM		 442# if GCC_VERSION >= 8000
443# pragma GCC diagnostic push
444# pragma GCC diagnostic ignored "-Wstringop-truncation"
445# endif
8fd79e71
L		 446static char *
447elf_x86_64_write_core_note (bfd *abfd, char *buf, int *bufsiz,
448 int note_type, ...)
449{
450 const struct elf_backend_data *bed = get_elf_backend_data (abfd);
8fd79e71
L		 451 va_list ap;
452 const char *fname, *psargs;
453 long pid;
454 int cursig;
455 const void *gregs;
456
457 switch (note_type)
458 {
459 default:
460 return NULL;
461
462 case NT_PRPSINFO:
463 va_start (ap, note_type);
464 fname = va_arg (ap, const char *);
465 psargs = va_arg (ap, const char *);
466 va_end (ap);
467
468 if (bed->s->elfclass == ELFCLASS32)
469 {
470 prpsinfo32_t data;
471 memset (&data, 0, sizeof (data));
472 strncpy (data.pr_fname, fname, sizeof (data.pr_fname));
473 strncpy (data.pr_psargs, psargs, sizeof (data.pr_psargs));
e85c6a70
JK		 474 return elfcore_write_note (abfd, buf, bufsiz, "CORE", note_type,
475 &data, sizeof (data));
8fd79e71
L		 476 }
477 else
478 {
b1bd052d 479 prpsinfo64_t data;
8fd79e71
L		 480 memset (&data, 0, sizeof (data));
481 strncpy (data.pr_fname, fname, sizeof (data.pr_fname));
482 strncpy (data.pr_psargs, psargs, sizeof (data.pr_psargs));
e85c6a70
JK		 483 return elfcore_write_note (abfd, buf, bufsiz, "CORE", note_type,
484 &data, sizeof (data));
8fd79e71 485 }
e85c6a70 486 /* NOTREACHED */
8fd79e71
L		 487
488 case NT_PRSTATUS:
489 va_start (ap, note_type);
490 pid = va_arg (ap, long);
491 cursig = va_arg (ap, int);
492 gregs = va_arg (ap, const void *);
493 va_end (ap);
494
495 if (bed->s->elfclass == ELFCLASS32)
496 {
497 if (bed->elf_machine_code == EM_X86_64)
498 {
499 prstatusx32_t prstat;
500 memset (&prstat, 0, sizeof (prstat));
501 prstat.pr_pid = pid;
502 prstat.pr_cursig = cursig;
503 memcpy (&prstat.pr_reg, gregs, sizeof (prstat.pr_reg));
e85c6a70
JK		 504 return elfcore_write_note (abfd, buf, bufsiz, "CORE", note_type,
505 &prstat, sizeof (prstat));
8fd79e71
L		 506 }
507 else
508 {
509 prstatus32_t prstat;
510 memset (&prstat, 0, sizeof (prstat));
511 prstat.pr_pid = pid;
512 prstat.pr_cursig = cursig;
513 memcpy (&prstat.pr_reg, gregs, sizeof (prstat.pr_reg));
e85c6a70
JK		 514 return elfcore_write_note (abfd, buf, bufsiz, "CORE", note_type,
515 &prstat, sizeof (prstat));
8fd79e71
L		 516 }
517 }
518 else
519 {
b1bd052d 520 prstatus64_t prstat;
8fd79e71
L		 521 memset (&prstat, 0, sizeof (prstat));
522 prstat.pr_pid = pid;
523 prstat.pr_cursig = cursig;
524 memcpy (&prstat.pr_reg, gregs, sizeof (prstat.pr_reg));
e85c6a70
JK		 525 return elfcore_write_note (abfd, buf, bufsiz, "CORE", note_type,
526 &prstat, sizeof (prstat));
8fd79e71 527 }
8fd79e71 528 }
e85c6a70 529 /* NOTREACHED */
8fd79e71 530}
602f1657
AM		 531# if GCC_VERSION >= 8000
532# pragma GCC diagnostic pop
533# endif
8fd79e71 534#endif
3bab7989 535\f
407443a3 536/* Functions for the x86-64 ELF linker. */
70256ad8 537
70256ad8
AJ		 538/* The size in bytes of an entry in the global offset table. */
539
540#define GOT_ENTRY_SIZE 8
8d88c4ca 541
38b12349 542/* The size in bytes of an entry in the lazy procedure linkage table. */
8d88c4ca 543
38b12349 544#define LAZY_PLT_ENTRY_SIZE 16
70256ad8 545
38b12349
L		 546/* The size in bytes of an entry in the non-lazy procedure linkage
547 table. */
70256ad8 548
38b12349
L		 549#define NON_LAZY_PLT_ENTRY_SIZE 8
550
551/* The first entry in a lazy procedure linkage table looks like this.
552 See the SVR4 ABI i386 supplement and the x86-64 ABI to see how this
553 works. */
554
555static const bfd_byte elf_x86_64_lazy_plt0_entry[LAZY_PLT_ENTRY_SIZE] =
70256ad8 556{
653165cc
AJ		 557 0xff, 0x35, 8, 0, 0, 0, /* pushq GOT+8(%rip) */
558 0xff, 0x25, 16, 0, 0, 0, /* jmpq *GOT+16(%rip) */
10efb593 559 0x0f, 0x1f, 0x40, 0x00 /* nopl 0(%rax) */
70256ad8
AJ		 560};
561
38b12349 562/* Subsequent entries in a lazy procedure linkage table look like this. */
70256ad8 563
38b12349 564static const bfd_byte elf_x86_64_lazy_plt_entry[LAZY_PLT_ENTRY_SIZE] =
70256ad8 565{
653165cc 566 0xff, 0x25, /* jmpq *name@GOTPC(%rip) */
407443a3 567 0, 0, 0, 0, /* replaced with offset to this symbol in .got. */
653165cc 568 0x68, /* pushq immediate */
70256ad8
AJ		 569 0, 0, 0, 0, /* replaced with index into relocation table. */
570 0xe9, /* jmp relative */
571 0, 0, 0, 0 /* replaced with offset to start of .plt0. */
572};
573
38b12349 574/* The first entry in a lazy procedure linkage table with BND prefix
0ff2b86e
L		 575 like this. */
576
38b12349 577static const bfd_byte elf_x86_64_lazy_bnd_plt0_entry[LAZY_PLT_ENTRY_SIZE] =
0ff2b86e 578{
07d6d2b8 579 0xff, 0x35, 8, 0, 0, 0, /* pushq GOT+8(%rip) */
0ff2b86e 580 0xf2, 0xff, 0x25, 16, 0, 0, 0, /* bnd jmpq *GOT+16(%rip) */
07d6d2b8 581 0x0f, 0x1f, 0 /* nopl (%rax) */
0ff2b86e
L		 582};
583
38b12349
L		 584/* Subsequent entries for branches with BND prefx in a lazy procedure
585 linkage table look like this. */
0ff2b86e 586
38b12349 587static const bfd_byte elf_x86_64_lazy_bnd_plt_entry[LAZY_PLT_ENTRY_SIZE] =
0ff2b86e 588{
07d6d2b8
AM		 589 0x68, 0, 0, 0, 0, /* pushq immediate */
590 0xf2, 0xe9, 0, 0, 0, 0, /* bnd jmpq relative */
591 0x0f, 0x1f, 0x44, 0, 0 /* nopl 0(%rax,%rax,1) */
0ff2b86e
L		 592};
593
ee2fdd6f
L		 594/* The first entry in the IBT-enabled lazy procedure linkage table is the
595 the same as the lazy PLT with BND prefix so that bound registers are
596 preserved when control is passed to dynamic linker. Subsequent
597 entries for a IBT-enabled lazy procedure linkage table look like
598 this. */
599
600static const bfd_byte elf_x86_64_lazy_ibt_plt_entry[LAZY_PLT_ENTRY_SIZE] =
601{
07d6d2b8
AM		 602 0xf3, 0x0f, 0x1e, 0xfa, /* endbr64 */
603 0x68, 0, 0, 0, 0, /* pushq immediate */
604 0xf2, 0xe9, 0, 0, 0, 0, /* bnd jmpq relative */
605 0x90 /* nop */
ee2fdd6f
L		 606};
607
608/* The first entry in the x32 IBT-enabled lazy procedure linkage table
de194d85 609 is the same as the normal lazy PLT. Subsequent entries for an
ee2fdd6f
L		 610 x32 IBT-enabled lazy procedure linkage table look like this. */
611
612static const bfd_byte elf_x32_lazy_ibt_plt_entry[LAZY_PLT_ENTRY_SIZE] =
613{
07d6d2b8
AM		 614 0xf3, 0x0f, 0x1e, 0xfa, /* endbr64 */
615 0x68, 0, 0, 0, 0, /* pushq immediate */
616 0xe9, 0, 0, 0, 0, /* jmpq relative */
617 0x66, 0x90 /* xchg %ax,%ax */
ee2fdd6f
L		 618};
619
38b12349 620/* Entries in the non-lazey procedure linkage table look like this. */
0ff2b86e 621
38b12349 622static const bfd_byte elf_x86_64_non_lazy_plt_entry[NON_LAZY_PLT_ENTRY_SIZE] =
0ff2b86e 623{
07d6d2b8
AM		 624 0xff, 0x25, /* jmpq *name@GOTPC(%rip) */
625 0, 0, 0, 0, /* replaced with offset to this symbol in .got. */
626 0x66, 0x90 /* xchg %ax,%ax */
0ff2b86e
L		 627};
628
38b12349
L		 629/* Entries for branches with BND prefix in the non-lazey procedure
630 linkage table look like this. */
0ff2b86e 631
38b12349 632static const bfd_byte elf_x86_64_non_lazy_bnd_plt_entry[NON_LAZY_PLT_ENTRY_SIZE] =
0ff2b86e 633{
07d6d2b8
AM		 634 0xf2, 0xff, 0x25, /* bnd jmpq *name@GOTPC(%rip) */
635 0, 0, 0, 0, /* replaced with offset to this symbol in .got. */
636 0x90 /* nop */
0ff2b86e
L		 637};
638
ee2fdd6f
L		 639/* Entries for branches with IBT-enabled in the non-lazey procedure
640 linkage table look like this. They have the same size as the lazy
641 PLT entry. */
642
643static const bfd_byte elf_x86_64_non_lazy_ibt_plt_entry[LAZY_PLT_ENTRY_SIZE] =
644{
07d6d2b8
AM		 645 0xf3, 0x0f, 0x1e, 0xfa, /* endbr64 */
646 0xf2, 0xff, 0x25, /* bnd jmpq *name@GOTPC(%rip) */
ee2fdd6f 647 0, 0, 0, 0, /* replaced with offset to this symbol in .got. */
07d6d2b8 648 0x0f, 0x1f, 0x44, 0x00, 0x00 /* nopl 0x0(%rax,%rax,1) */
ee2fdd6f
L		 649};
650
651/* Entries for branches with IBT-enabled in the x32 non-lazey procedure
652 linkage table look like this. They have the same size as the lazy
653 PLT entry. */
654
655static const bfd_byte elf_x32_non_lazy_ibt_plt_entry[LAZY_PLT_ENTRY_SIZE] =
656{
07d6d2b8
AM		 657 0xf3, 0x0f, 0x1e, 0xfa, /* endbr64 */
658 0xff, 0x25, /* jmpq *name@GOTPC(%rip) */
ee2fdd6f
L		 659 0, 0, 0, 0, /* replaced with offset to this symbol in .got. */
660 0x66, 0x0f, 0x1f, 0x44, 0x00, 0x00 /* nopw 0x0(%rax,%rax,1) */
661};
662
92e68c1d
L		 663/* The TLSDESC entry in a lazy procedure linkage table. */
664static const bfd_byte elf_x86_64_tlsdesc_plt_entry[LAZY_PLT_ENTRY_SIZE] =
665{
666 0xf3, 0x0f, 0x1e, 0xfa, /* endbr64 */
667 0xff, 0x35, 8, 0, 0, 0, /* pushq GOT+8(%rip) */
668 0xff, 0x25, 16, 0, 0, 0 /* jmpq *GOT+TDG(%rip) */
669};
670
38b12349 671/* .eh_frame covering the lazy .plt section. */
e41b3a13 672
38b12349 673static const bfd_byte elf_x86_64_eh_frame_lazy_plt[] =
e41b3a13 674{
e41b3a13
JJ		 675 PLT_CIE_LENGTH, 0, 0, 0, /* CIE length */
676 0, 0, 0, 0, /* CIE ID */
677 1, /* CIE version */
678 'z', 'R', 0, /* Augmentation string */
679 1, /* Code alignment factor */
680 0x78, /* Data alignment factor */
681 16, /* Return address column */
682 1, /* Augmentation size */
683 DW_EH_PE_pcrel | DW_EH_PE_sdata4, /* FDE encoding */
684 DW_CFA_def_cfa, 7, 8, /* DW_CFA_def_cfa: r7 (rsp) ofs 8 */
685 DW_CFA_offset + 16, 1, /* DW_CFA_offset: r16 (rip) at cfa-8 */
686 DW_CFA_nop, DW_CFA_nop,
687
688 PLT_FDE_LENGTH, 0, 0, 0, /* FDE length */
689 PLT_CIE_LENGTH + 8, 0, 0, 0, /* CIE pointer */
690 0, 0, 0, 0, /* R_X86_64_PC32 .plt goes here */
691 0, 0, 0, 0, /* .plt size goes here */
692 0, /* Augmentation size */
693 DW_CFA_def_cfa_offset, 16, /* DW_CFA_def_cfa_offset: 16 */
694 DW_CFA_advance_loc + 6, /* DW_CFA_advance_loc: 6 to __PLT__+6 */
695 DW_CFA_def_cfa_offset, 24, /* DW_CFA_def_cfa_offset: 24 */
696 DW_CFA_advance_loc + 10, /* DW_CFA_advance_loc: 10 to __PLT__+16 */
697 DW_CFA_def_cfa_expression, /* DW_CFA_def_cfa_expression */
698 11, /* Block length */
699 DW_OP_breg7, 8, /* DW_OP_breg7 (rsp): 8 */
700 DW_OP_breg16, 0, /* DW_OP_breg16 (rip): 0 */
701 DW_OP_lit15, DW_OP_and, DW_OP_lit11, DW_OP_ge,
702 DW_OP_lit3, DW_OP_shl, DW_OP_plus,
703 DW_CFA_nop, DW_CFA_nop, DW_CFA_nop, DW_CFA_nop
704};
705
38b12349 706/* .eh_frame covering the lazy BND .plt section. */
9e659176 707
38b12349 708static const bfd_byte elf_x86_64_eh_frame_lazy_bnd_plt[] =
9e659176
L		 709{
710 PLT_CIE_LENGTH, 0, 0, 0, /* CIE length */
711 0, 0, 0, 0, /* CIE ID */
712 1, /* CIE version */
713 'z', 'R', 0, /* Augmentation string */
714 1, /* Code alignment factor */
715 0x78, /* Data alignment factor */
716 16, /* Return address column */
717 1, /* Augmentation size */
718 DW_EH_PE_pcrel | DW_EH_PE_sdata4, /* FDE encoding */
719 DW_CFA_def_cfa, 7, 8, /* DW_CFA_def_cfa: r7 (rsp) ofs 8 */
720 DW_CFA_offset + 16, 1, /* DW_CFA_offset: r16 (rip) at cfa-8 */
721 DW_CFA_nop, DW_CFA_nop,
722
723 PLT_FDE_LENGTH, 0, 0, 0, /* FDE length */
724 PLT_CIE_LENGTH + 8, 0, 0, 0, /* CIE pointer */
725 0, 0, 0, 0, /* R_X86_64_PC32 .plt goes here */
726 0, 0, 0, 0, /* .plt size goes here */
727 0, /* Augmentation size */
728 DW_CFA_def_cfa_offset, 16, /* DW_CFA_def_cfa_offset: 16 */
729 DW_CFA_advance_loc + 6, /* DW_CFA_advance_loc: 6 to __PLT__+6 */
730 DW_CFA_def_cfa_offset, 24, /* DW_CFA_def_cfa_offset: 24 */
731 DW_CFA_advance_loc + 10, /* DW_CFA_advance_loc: 10 to __PLT__+16 */
732 DW_CFA_def_cfa_expression, /* DW_CFA_def_cfa_expression */
733 11, /* Block length */
734 DW_OP_breg7, 8, /* DW_OP_breg7 (rsp): 8 */
735 DW_OP_breg16, 0, /* DW_OP_breg16 (rip): 0 */
736 DW_OP_lit15, DW_OP_and, DW_OP_lit5, DW_OP_ge,
737 DW_OP_lit3, DW_OP_shl, DW_OP_plus,
738 DW_CFA_nop, DW_CFA_nop, DW_CFA_nop, DW_CFA_nop
739};
740
ee2fdd6f
L		 741/* .eh_frame covering the lazy .plt section with IBT-enabled. */
742
743static const bfd_byte elf_x86_64_eh_frame_lazy_ibt_plt[] =
744{
745 PLT_CIE_LENGTH, 0, 0, 0, /* CIE length */
746 0, 0, 0, 0, /* CIE ID */
747 1, /* CIE version */
748 'z', 'R', 0, /* Augmentation string */
749 1, /* Code alignment factor */
750 0x78, /* Data alignment factor */
751 16, /* Return address column */
752 1, /* Augmentation size */
753 DW_EH_PE_pcrel | DW_EH_PE_sdata4, /* FDE encoding */
754 DW_CFA_def_cfa, 7, 8, /* DW_CFA_def_cfa: r7 (rsp) ofs 8 */
755 DW_CFA_offset + 16, 1, /* DW_CFA_offset: r16 (rip) at cfa-8 */
756 DW_CFA_nop, DW_CFA_nop,
757
758 PLT_FDE_LENGTH, 0, 0, 0, /* FDE length */
759 PLT_CIE_LENGTH + 8, 0, 0, 0, /* CIE pointer */
760 0, 0, 0, 0, /* R_X86_64_PC32 .plt goes here */
761 0, 0, 0, 0, /* .plt size goes here */
762 0, /* Augmentation size */
763 DW_CFA_def_cfa_offset, 16, /* DW_CFA_def_cfa_offset: 16 */
764 DW_CFA_advance_loc + 6, /* DW_CFA_advance_loc: 6 to __PLT__+6 */
765 DW_CFA_def_cfa_offset, 24, /* DW_CFA_def_cfa_offset: 24 */
766 DW_CFA_advance_loc + 10, /* DW_CFA_advance_loc: 10 to __PLT__+16 */
767 DW_CFA_def_cfa_expression, /* DW_CFA_def_cfa_expression */
768 11, /* Block length */
769 DW_OP_breg7, 8, /* DW_OP_breg7 (rsp): 8 */
770 DW_OP_breg16, 0, /* DW_OP_breg16 (rip): 0 */
771 DW_OP_lit15, DW_OP_and, DW_OP_lit10, DW_OP_ge,
772 DW_OP_lit3, DW_OP_shl, DW_OP_plus,
773 DW_CFA_nop, DW_CFA_nop, DW_CFA_nop, DW_CFA_nop
774};
775
776/* .eh_frame covering the x32 lazy .plt section with IBT-enabled. */
777
778static const bfd_byte elf_x32_eh_frame_lazy_ibt_plt[] =
779{
780 PLT_CIE_LENGTH, 0, 0, 0, /* CIE length */
781 0, 0, 0, 0, /* CIE ID */
782 1, /* CIE version */
783 'z', 'R', 0, /* Augmentation string */
784 1, /* Code alignment factor */
785 0x78, /* Data alignment factor */
786 16, /* Return address column */
787 1, /* Augmentation size */
788 DW_EH_PE_pcrel | DW_EH_PE_sdata4, /* FDE encoding */
789 DW_CFA_def_cfa, 7, 8, /* DW_CFA_def_cfa: r7 (rsp) ofs 8 */
790 DW_CFA_offset + 16, 1, /* DW_CFA_offset: r16 (rip) at cfa-8 */
791 DW_CFA_nop, DW_CFA_nop,
792
793 PLT_FDE_LENGTH, 0, 0, 0, /* FDE length */
794 PLT_CIE_LENGTH + 8, 0, 0, 0, /* CIE pointer */
795 0, 0, 0, 0, /* R_X86_64_PC32 .plt goes here */
796 0, 0, 0, 0, /* .plt size goes here */
797 0, /* Augmentation size */
798 DW_CFA_def_cfa_offset, 16, /* DW_CFA_def_cfa_offset: 16 */
799 DW_CFA_advance_loc + 6, /* DW_CFA_advance_loc: 6 to __PLT__+6 */
800 DW_CFA_def_cfa_offset, 24, /* DW_CFA_def_cfa_offset: 24 */
801 DW_CFA_advance_loc + 10, /* DW_CFA_advance_loc: 10 to __PLT__+16 */
802 DW_CFA_def_cfa_expression, /* DW_CFA_def_cfa_expression */
803 11, /* Block length */
804 DW_OP_breg7, 8, /* DW_OP_breg7 (rsp): 8 */
805 DW_OP_breg16, 0, /* DW_OP_breg16 (rip): 0 */
806 DW_OP_lit15, DW_OP_and, DW_OP_lit9, DW_OP_ge,
807 DW_OP_lit3, DW_OP_shl, DW_OP_plus,
808 DW_CFA_nop, DW_CFA_nop, DW_CFA_nop, DW_CFA_nop
809};
810
38b12349 811/* .eh_frame covering the non-lazy .plt section. */
fff53dae 812
38b12349 813static const bfd_byte elf_x86_64_eh_frame_non_lazy_plt[] =
fff53dae
L		 814{
815#define PLT_GOT_FDE_LENGTH 20
816 PLT_CIE_LENGTH, 0, 0, 0, /* CIE length */
817 0, 0, 0, 0, /* CIE ID */
818 1, /* CIE version */
819 'z', 'R', 0, /* Augmentation string */
820 1, /* Code alignment factor */
821 0x78, /* Data alignment factor */
822 16, /* Return address column */
823 1, /* Augmentation size */
824 DW_EH_PE_pcrel | DW_EH_PE_sdata4, /* FDE encoding */
825 DW_CFA_def_cfa, 7, 8, /* DW_CFA_def_cfa: r7 (rsp) ofs 8 */
826 DW_CFA_offset + 16, 1, /* DW_CFA_offset: r16 (rip) at cfa-8 */
827 DW_CFA_nop, DW_CFA_nop,
828
829 PLT_GOT_FDE_LENGTH, 0, 0, 0, /* FDE length */
830 PLT_CIE_LENGTH + 8, 0, 0, 0, /* CIE pointer */
38b12349
L		 831 0, 0, 0, 0, /* the start of non-lazy .plt goes here */
832 0, 0, 0, 0, /* non-lazy .plt size goes here */
fff53dae
L		 833 0, /* Augmentation size */
834 DW_CFA_nop, DW_CFA_nop, DW_CFA_nop, DW_CFA_nop,
835 DW_CFA_nop, DW_CFA_nop, DW_CFA_nop
836};
837
eed180f8 838/* These are the standard parameters. */
765e526c 839static const struct elf_x86_lazy_plt_layout elf_x86_64_lazy_plt =
eed180f8 840 {
07d6d2b8
AM		 841 elf_x86_64_lazy_plt0_entry, /* plt0_entry */
842 LAZY_PLT_ENTRY_SIZE, /* plt0_entry_size */
843 elf_x86_64_lazy_plt_entry, /* plt_entry */
844 LAZY_PLT_ENTRY_SIZE, /* plt_entry_size */
92e68c1d
L		 845 elf_x86_64_tlsdesc_plt_entry, /* plt_tlsdesc_entry */
846 LAZY_PLT_ENTRY_SIZE, /* plt_tlsdesc_entry_size */
847 6, /* plt_tlsdesc_got1_offset */
848 12, /* plt_tlsdesc_got2_offset */
849 10, /* plt_tlsdesc_got1_insn_end */
850 16, /* plt_tlsdesc_got2_insn_end */
07d6d2b8
AM		 851 2, /* plt0_got1_offset */
852 8, /* plt0_got2_offset */
853 12, /* plt0_got2_insn_end */
854 2, /* plt_got_offset */
855 7, /* plt_reloc_offset */
856 12, /* plt_plt_offset */
857 6, /* plt_got_insn_size */
858 LAZY_PLT_ENTRY_SIZE, /* plt_plt_insn_end */
859 6, /* plt_lazy_offset */
860 elf_x86_64_lazy_plt0_entry, /* pic_plt0_entry */
861 elf_x86_64_lazy_plt_entry, /* pic_plt_entry */
862 elf_x86_64_eh_frame_lazy_plt, /* eh_frame_plt */
38b12349
L		 863 sizeof (elf_x86_64_eh_frame_lazy_plt) /* eh_frame_plt_size */
864 };
865
765e526c 866static const struct elf_x86_non_lazy_plt_layout elf_x86_64_non_lazy_plt =
38b12349 867 {
07d6d2b8
AM		 868 elf_x86_64_non_lazy_plt_entry, /* plt_entry */
869 elf_x86_64_non_lazy_plt_entry, /* pic_plt_entry */
870 NON_LAZY_PLT_ENTRY_SIZE, /* plt_entry_size */
871 2, /* plt_got_offset */
872 6, /* plt_got_insn_size */
873 elf_x86_64_eh_frame_non_lazy_plt, /* eh_frame_plt */
38b12349 874 sizeof (elf_x86_64_eh_frame_non_lazy_plt) /* eh_frame_plt_size */
eed180f8
RM		 875 };
876
765e526c 877static const struct elf_x86_lazy_plt_layout elf_x86_64_lazy_bnd_plt =
0ff2b86e 878 {
07d6d2b8
AM		 879 elf_x86_64_lazy_bnd_plt0_entry, /* plt0_entry */
880 LAZY_PLT_ENTRY_SIZE, /* plt0_entry_size */
881 elf_x86_64_lazy_bnd_plt_entry, /* plt_entry */
882 LAZY_PLT_ENTRY_SIZE, /* plt_entry_size */
92e68c1d
L		 883 elf_x86_64_tlsdesc_plt_entry, /* plt_tlsdesc_entry */
884 LAZY_PLT_ENTRY_SIZE, /* plt_tlsdesc_entry_size */
885 6, /* plt_tlsdesc_got1_offset */
886 12, /* plt_tlsdesc_got2_offset */
887 10, /* plt_tlsdesc_got1_insn_end */
888 16, /* plt_tlsdesc_got2_insn_end */
07d6d2b8
AM		 889 2, /* plt0_got1_offset */
890 1+8, /* plt0_got2_offset */
891 1+12, /* plt0_got2_insn_end */
892 1+2, /* plt_got_offset */
893 1, /* plt_reloc_offset */
894 7, /* plt_plt_offset */
895 1+6, /* plt_got_insn_size */
896 11, /* plt_plt_insn_end */
897 0, /* plt_lazy_offset */
898 elf_x86_64_lazy_bnd_plt0_entry, /* pic_plt0_entry */
899 elf_x86_64_lazy_bnd_plt_entry, /* pic_plt_entry */
900 elf_x86_64_eh_frame_lazy_bnd_plt, /* eh_frame_plt */
38b12349
L		 901 sizeof (elf_x86_64_eh_frame_lazy_bnd_plt) /* eh_frame_plt_size */
902 };
903
765e526c 904static const struct elf_x86_non_lazy_plt_layout elf_x86_64_non_lazy_bnd_plt =
38b12349 905 {
07d6d2b8
AM		 906 elf_x86_64_non_lazy_bnd_plt_entry, /* plt_entry */
907 elf_x86_64_non_lazy_bnd_plt_entry, /* pic_plt_entry */
908 NON_LAZY_PLT_ENTRY_SIZE, /* plt_entry_size */
909 1+2, /* plt_got_offset */
910 1+6, /* plt_got_insn_size */
911 elf_x86_64_eh_frame_non_lazy_plt, /* eh_frame_plt */
38b12349
L		 912 sizeof (elf_x86_64_eh_frame_non_lazy_plt) /* eh_frame_plt_size */
913 };
914
765e526c 915static const struct elf_x86_lazy_plt_layout elf_x86_64_lazy_ibt_plt =
ee2fdd6f 916 {
07d6d2b8
AM		 917 elf_x86_64_lazy_bnd_plt0_entry, /* plt0_entry */
918 LAZY_PLT_ENTRY_SIZE, /* plt0_entry_size */
919 elf_x86_64_lazy_ibt_plt_entry, /* plt_entry */
920 LAZY_PLT_ENTRY_SIZE, /* plt_entry_size */
92e68c1d
L		 921 elf_x86_64_tlsdesc_plt_entry, /* plt_tlsdesc_entry */
922 LAZY_PLT_ENTRY_SIZE, /* plt_tlsdesc_entry_size */
923 6, /* plt_tlsdesc_got1_offset */
924 12, /* plt_tlsdesc_got2_offset */
925 10, /* plt_tlsdesc_got1_insn_end */
926 16, /* plt_tlsdesc_got2_insn_end */
07d6d2b8
AM		 927 2, /* plt0_got1_offset */
928 1+8, /* plt0_got2_offset */
929 1+12, /* plt0_got2_insn_end */
930 4+1+2, /* plt_got_offset */
931 4+1, /* plt_reloc_offset */
932 4+1+6, /* plt_plt_offset */
933 4+1+6, /* plt_got_insn_size */
934 4+1+5+5, /* plt_plt_insn_end */
935 0, /* plt_lazy_offset */
936 elf_x86_64_lazy_bnd_plt0_entry, /* pic_plt0_entry */
937 elf_x86_64_lazy_ibt_plt_entry, /* pic_plt_entry */
938 elf_x86_64_eh_frame_lazy_ibt_plt, /* eh_frame_plt */
ee2fdd6f
L		 939 sizeof (elf_x86_64_eh_frame_lazy_ibt_plt) /* eh_frame_plt_size */
940 };
941
765e526c 942static const struct elf_x86_lazy_plt_layout elf_x32_lazy_ibt_plt =
ee2fdd6f 943 {
07d6d2b8
AM		 944 elf_x86_64_lazy_plt0_entry, /* plt0_entry */
945 LAZY_PLT_ENTRY_SIZE, /* plt0_entry_size */
946 elf_x32_lazy_ibt_plt_entry, /* plt_entry */
947 LAZY_PLT_ENTRY_SIZE, /* plt_entry_size */
92e68c1d
L		 948 elf_x86_64_tlsdesc_plt_entry, /* plt_tlsdesc_entry */
949 LAZY_PLT_ENTRY_SIZE, /* plt_tlsdesc_entry_size */
950 6, /* plt_tlsdesc_got1_offset */
951 12, /* plt_tlsdesc_got2_offset */
952 10, /* plt_tlsdesc_got1_insn_end */
953 16, /* plt_tlsdesc_got2_insn_end */
07d6d2b8
AM		 954 2, /* plt0_got1_offset */
955 8, /* plt0_got2_offset */
956 12, /* plt0_got2_insn_end */
957 4+2, /* plt_got_offset */
958 4+1, /* plt_reloc_offset */
959 4+6, /* plt_plt_offset */
960 4+6, /* plt_got_insn_size */
961 4+5+5, /* plt_plt_insn_end */
962 0, /* plt_lazy_offset */
963 elf_x86_64_lazy_plt0_entry, /* pic_plt0_entry */
964 elf_x32_lazy_ibt_plt_entry, /* pic_plt_entry */
965 elf_x32_eh_frame_lazy_ibt_plt, /* eh_frame_plt */
ee2fdd6f
L		 966 sizeof (elf_x32_eh_frame_lazy_ibt_plt) /* eh_frame_plt_size */
967 };
968
765e526c 969static const struct elf_x86_non_lazy_plt_layout elf_x86_64_non_lazy_ibt_plt =
ee2fdd6f 970 {
07d6d2b8
AM		 971 elf_x86_64_non_lazy_ibt_plt_entry, /* plt_entry */
972 elf_x86_64_non_lazy_ibt_plt_entry, /* pic_plt_entry */
973 LAZY_PLT_ENTRY_SIZE, /* plt_entry_size */
974 4+1+2, /* plt_got_offset */
975 4+1+6, /* plt_got_insn_size */
976 elf_x86_64_eh_frame_non_lazy_plt, /* eh_frame_plt */
ee2fdd6f
L		 977 sizeof (elf_x86_64_eh_frame_non_lazy_plt) /* eh_frame_plt_size */
978 };
979
765e526c 980static const struct elf_x86_non_lazy_plt_layout elf_x32_non_lazy_ibt_plt =
ee2fdd6f 981 {
07d6d2b8
AM		 982 elf_x32_non_lazy_ibt_plt_entry, /* plt_entry */
983 elf_x32_non_lazy_ibt_plt_entry, /* pic_plt_entry */
984 LAZY_PLT_ENTRY_SIZE, /* plt_entry_size */
985 4+2, /* plt_got_offset */
986 4+6, /* plt_got_insn_size */
987 elf_x86_64_eh_frame_non_lazy_plt, /* eh_frame_plt */
ee2fdd6f
L		 988 sizeof (elf_x86_64_eh_frame_non_lazy_plt) /* eh_frame_plt_size */
989 };
990
851b6fa1 991static const struct elf_x86_backend_data elf_x86_64_arch_bed =
38b12349 992 {
07d6d2b8 993 is_normal /* os */
0ff2b86e
L		 994 };
995
eed180f8
RM		 996#define elf_backend_arch_data &elf_x86_64_arch_bed
997
b34976b6 998static bfd_boolean
27482721 999elf64_x86_64_elf_object_p (bfd *abfd)
bffbf940 1000{
8d88c4ca
NC		 1001 /* Set the right machine number for an x86-64 elf64 file. */
1002 bfd_default_set_arch_mach (abfd, bfd_arch_i386, bfd_mach_x86_64);
b34976b6 1003 return TRUE;
8d88c4ca
NC		 1004}
1005
8059fb19
RM		 1006static bfd_boolean
1007elf32_x86_64_elf_object_p (bfd *abfd)
1008{
1009 /* Set the right machine number for an x86-64 elf32 file. */
1010 bfd_default_set_arch_mach (abfd, bfd_arch_i386, bfd_mach_x64_32);
1011 return TRUE;
1012}
1013
142411ca
L		 1014/* Return TRUE if the TLS access code sequence support transition
1015 from R_TYPE. */
1016
1017static bfd_boolean
351f65ca
L		 1018elf_x86_64_check_tls_transition (bfd *abfd,
1019 struct bfd_link_info *info,
1020 asection *sec,
1021 bfd_byte *contents,
1022 Elf_Internal_Shdr *symtab_hdr,
1023 struct elf_link_hash_entry **sym_hashes,
1024 unsigned int r_type,
1025 const Elf_Internal_Rela *rel,
1026 const Elf_Internal_Rela *relend)
bffbf940 1027{
142411ca
L		 1028 unsigned int val;
1029 unsigned long r_symndx;
5c98a14e 1030 bfd_boolean largepic = FALSE;
142411ca
L		 1031 struct elf_link_hash_entry *h;
1032 bfd_vma offset;
0afcef53 1033 struct elf_x86_link_hash_table *htab;
e2cbcd91 1034 bfd_byte *call;
1d4af308 1035 bfd_boolean indirect_call;
142411ca 1036
0afcef53 1037 htab = elf_x86_hash_table (info, X86_64_ELF_DATA);
142411ca 1038 offset = rel->r_offset;
bffbf940 1039 switch (r_type)
142411ca
L		 1040 {
1041 case R_X86_64_TLSGD:
1042 case R_X86_64_TLSLD:
1043 if ((rel + 1) >= relend)
1044 return FALSE;
1045
1046 if (r_type == R_X86_64_TLSGD)
1047 {
52bc799a 1048 /* Check transition from GD access model. For 64bit, only
142411ca 1049 .byte 0x66; leaq foo@tlsgd(%rip), %rdi
e2cbcd91
L		 1050 .word 0x6666; rex64; call __tls_get_addr@PLT
1051 or
1052 .byte 0x66; leaq foo@tlsgd(%rip), %rdi
1053 .byte 0x66; rex64
1054 call *__tls_get_addr@GOTPCREL(%rip)
1055 which may be converted to
1056 addr32 call __tls_get_addr
52bc799a
L		 1057 can transit to different access model. For 32bit, only
1058 leaq foo@tlsgd(%rip), %rdi
e2cbcd91
L		 1059 .word 0x6666; rex64; call __tls_get_addr@PLT
1060 or
1061 leaq foo@tlsgd(%rip), %rdi
1062 .byte 0x66; rex64
1063 call *__tls_get_addr@GOTPCREL(%rip)
1064 which may be converted to
1065 addr32 call __tls_get_addr
1066 can transit to different access model. For largepic,
5c98a14e 1067 we also support:
07d6d2b8
AM		 1068 leaq foo@tlsgd(%rip), %rdi
1069 movabsq $__tls_get_addr@pltoff, %rax
1070 addq $r15, %rax
1071 call *%rax
e2cbcd91 1072 or
07d6d2b8
AM		 1073 leaq foo@tlsgd(%rip), %rdi
1074 movabsq $__tls_get_addr@pltoff, %rax
1075 addq $rbx, %rax
1076 call *%rax */
142411ca 1077
fa289a5f
AM		 1078 static const unsigned char leaq[] = { 0x66, 0x48, 0x8d, 0x3d };
1079
5c98a14e 1080 if ((offset + 12) > sec->size)
142411ca 1081 return FALSE;
52bc799a 1082
e2cbcd91
L		 1083 call = contents + offset + 4;
1084 if (call[0] != 0x66
1085 || !((call[1] == 0x48
1086 && call[2] == 0xff
1087 && call[3] == 0x15)
1088 || (call[1] == 0x48
1089 && call[2] == 0x67
1090 && call[3] == 0xe8)
1091 || (call[1] == 0x66
1092 && call[2] == 0x48
1093 && call[3] == 0xe8)))
5c98a14e
JJ		 1094 {
1095 if (!ABI_64_P (abfd)
1096 || (offset + 19) > sec->size
1097 || offset < 3
e2cbcd91
L		 1098 || memcmp (call - 7, leaq + 1, 3) != 0
1099 || memcmp (call, "\x48\xb8", 2) != 0
1100 || call[11] != 0x01
1101 || call[13] != 0xff
1102 || call[14] != 0xd0
1103 || !((call[10] == 0x48 && call[12] == 0xd8)
1104 || (call[10] == 0x4c && call[12] == 0xf8)))
5c98a14e
JJ		 1105 return FALSE;
1106 largepic = TRUE;
1107 }
1108 else if (ABI_64_P (abfd))
52bc799a 1109 {
52bc799a 1110 if (offset < 4
fa289a5f 1111 || memcmp (contents + offset - 4, leaq, 4) != 0)
52bc799a
L		 1112 return FALSE;
1113 }
1114 else
1115 {
52bc799a 1116 if (offset < 3
fa289a5f 1117 || memcmp (contents + offset - 3, leaq + 1, 3) != 0)
52bc799a
L		 1118 return FALSE;
1119 }
e2cbcd91 1120 indirect_call = call[2] == 0xff;
142411ca
L		 1121 }
1122 else
1123 {
1124 /* Check transition from LD access model. Only
1125 leaq foo@tlsld(%rip), %rdi;
e2cbcd91 1126 call __tls_get_addr@PLT
07d6d2b8 1127 or
e2cbcd91
L		 1128 leaq foo@tlsld(%rip), %rdi;
1129 call *__tls_get_addr@GOTPCREL(%rip)
1130 which may be converted to
1131 addr32 call __tls_get_addr
5c98a14e
JJ		 1132 can transit to different access model. For largepic
1133 we also support:
07d6d2b8
AM		 1134 leaq foo@tlsld(%rip), %rdi
1135 movabsq $__tls_get_addr@pltoff, %rax
1136 addq $r15, %rax
1137 call *%rax
e2cbcd91 1138 or
07d6d2b8
AM		 1139 leaq foo@tlsld(%rip), %rdi
1140 movabsq $__tls_get_addr@pltoff, %rax
1141 addq $rbx, %rax
1142 call *%rax */
142411ca 1143
fa289a5f 1144 static const unsigned char lea[] = { 0x48, 0x8d, 0x3d };
142411ca
L		 1145
1146 if (offset < 3 || (offset + 9) > sec->size)
1147 return FALSE;
1148
5c98a14e 1149 if (memcmp (contents + offset - 3, lea, 3) != 0)
142411ca 1150 return FALSE;
5c98a14e 1151
e2cbcd91
L		 1152 call = contents + offset + 4;
1153 if (!(call[0] == 0xe8
1154 || (call[0] == 0xff && call[1] == 0x15)
1155 || (call[0] == 0x67 && call[1] == 0xe8)))
5c98a14e
JJ		 1156 {
1157 if (!ABI_64_P (abfd)
1158 || (offset + 19) > sec->size
e2cbcd91
L		 1159 || memcmp (call, "\x48\xb8", 2) != 0
1160 || call[11] != 0x01
1161 || call[13] != 0xff
1162 || call[14] != 0xd0
1163 || !((call[10] == 0x48 && call[12] == 0xd8)
1164 || (call[10] == 0x4c && call[12] == 0xf8)))
5c98a14e
JJ		 1165 return FALSE;
1166 largepic = TRUE;
1167 }
e2cbcd91 1168 indirect_call = call[0] == 0xff;
142411ca
L		 1169 }
1170
351f65ca 1171 r_symndx = htab->r_sym (rel[1].r_info);
142411ca
L		 1172 if (r_symndx < symtab_hdr->sh_info)
1173 return FALSE;
1174
1175 h = sym_hashes[r_symndx - symtab_hdr->sh_info];
1d4af308 1176 if (h == NULL
0afcef53 1177 || !((struct elf_x86_link_hash_entry *) h)->tls_get_addr)
e2cbcd91 1178 return FALSE;
e2cbcd91 1179 else
78984959
L		 1180 {
1181 r_type = (ELF32_R_TYPE (rel[1].r_info)
1182 & ~R_X86_64_converted_reloc_bit);
1183 if (largepic)
1184 return r_type == R_X86_64_PLTOFF64;
1185 else if (indirect_call)
1186 return r_type == R_X86_64_GOTPCRELX;
1187 else
1188 return (r_type == R_X86_64_PC32 || r_type == R_X86_64_PLT32);
1189 }
142411ca
L		 1190
1191 case R_X86_64_GOTTPOFF:
1192 /* Check transition from IE access model:
4a4c5f25
L		 1193 mov foo@gottpoff(%rip), %reg
1194 add foo@gottpoff(%rip), %reg
142411ca
L		 1195 */
1196
4a4c5f25
L		 1197 /* Check REX prefix first. */
1198 if (offset >= 3 && (offset + 4) <= sec->size)
1199 {
1200 val = bfd_get_8 (abfd, contents + offset - 3);
1201 if (val != 0x48 && val != 0x4c)
1202 {
1203 /* X32 may have 0x44 REX prefix or no REX prefix. */
1204 if (ABI_64_P (abfd))
1205 return FALSE;
1206 }
1207 }
1208 else
1209 {
1210 /* X32 may not have any REX prefix. */
1211 if (ABI_64_P (abfd))
1212 return FALSE;
1213 if (offset < 2 || (offset + 3) > sec->size)
1214 return FALSE;
1215 }
142411ca
L		 1216
1217 val = bfd_get_8 (abfd, contents + offset - 2);
1218 if (val != 0x8b && val != 0x03)
1219 return FALSE;
1220
1221 val = bfd_get_8 (abfd, contents + offset - 1);
1222 return (val & 0xc7) == 5;
1223
1224 case R_X86_64_GOTPC32_TLSDESC:
1225 /* Check transition from GDesc access model:
1226 leaq x@tlsdesc(%rip), %rax
1227
1228 Make sure it's a leaq adding rip to a 32-bit offset
1229 into any register, although it's probably almost always
1230 going to be rax. */
1231
1232 if (offset < 3 || (offset + 4) > sec->size)
1233 return FALSE;
1234
1235 val = bfd_get_8 (abfd, contents + offset - 3);
1236 if ((val & 0xfb) != 0x48)
1237 return FALSE;
1238
1239 if (bfd_get_8 (abfd, contents + offset - 2) != 0x8d)
1240 return FALSE;
1241
1242 val = bfd_get_8 (abfd, contents + offset - 1);
1243 return (val & 0xc7) == 0x05;
1244
1245 case R_X86_64_TLSDESC_CALL:
1246 /* Check transition from GDesc access model:
1247 call *x@tlsdesc(%rax)
1248 */
1249 if (offset + 2 <= sec->size)
1250 {
1251 /* Make sure that it's a call *x@tlsdesc(%rax). */
e2cbcd91
L		 1252 call = contents + offset;
1253 return call[0] == 0xff && call[1] == 0x10;
142411ca
L		 1254 }
1255
1256 return FALSE;
1257
1258 default:
1259 abort ();
1260 }
1261}
1262
1263/* Return TRUE if the TLS access transition is OK or no transition
1264 will be performed. Update R_TYPE if there is a transition. */
1265
1266static bfd_boolean
351f65ca
L		 1267elf_x86_64_tls_transition (struct bfd_link_info *info, bfd *abfd,
1268 asection *sec, bfd_byte *contents,
1269 Elf_Internal_Shdr *symtab_hdr,
1270 struct elf_link_hash_entry **sym_hashes,
1271 unsigned int *r_type, int tls_type,
1272 const Elf_Internal_Rela *rel,
1273 const Elf_Internal_Rela *relend,
1274 struct elf_link_hash_entry *h,
bedfd056
L		 1275 unsigned long r_symndx,
1276 bfd_boolean from_relocate_section)
142411ca
L		 1277{
1278 unsigned int from_type = *r_type;
1279 unsigned int to_type = from_type;
1280 bfd_boolean check = TRUE;
1281
bb1cb422
L		 1282 /* Skip TLS transition for functions. */
1283 if (h != NULL
1284 && (h->type == STT_FUNC
1285 || h->type == STT_GNU_IFUNC))
1286 return TRUE;
1287
142411ca 1288 switch (from_type)
bffbf940
JJ		 1289 {
1290 case R_X86_64_TLSGD:
67a4f2b7
AO		 1291 case R_X86_64_GOTPC32_TLSDESC:
1292 case R_X86_64_TLSDESC_CALL:
bffbf940 1293 case R_X86_64_GOTTPOFF:
0e1862bb 1294 if (bfd_link_executable (info))
142411ca
L		 1295 {
1296 if (h == NULL)
1297 to_type = R_X86_64_TPOFF32;
1298 else
1299 to_type = R_X86_64_GOTTPOFF;
1300 }
1301
bedfd056
L		 1302 /* When we are called from elf_x86_64_relocate_section, there may
1303 be additional transitions based on TLS_TYPE. */
1304 if (from_relocate_section)
142411ca
L		 1305 {
1306 unsigned int new_to_type = to_type;
1307
51537393 1308 if (TLS_TRANSITION_IE_TO_LE_P (info, h, tls_type))
142411ca
L		 1309 new_to_type = R_X86_64_TPOFF32;
1310
1311 if (to_type == R_X86_64_TLSGD
1312 || to_type == R_X86_64_GOTPC32_TLSDESC
1313 || to_type == R_X86_64_TLSDESC_CALL)
1314 {
1315 if (tls_type == GOT_TLS_IE)
1316 new_to_type = R_X86_64_GOTTPOFF;
1317 }
1318
1319 /* We checked the transition before when we were called from
351f65ca 1320 elf_x86_64_check_relocs. We only want to check the new
142411ca
L		 1321 transition which hasn't been checked before. */
1322 check = new_to_type != to_type && from_type == to_type;
1323 to_type = new_to_type;
1324 }
1325
1326 break;
1327
bffbf940 1328 case R_X86_64_TLSLD:
0e1862bb 1329 if (bfd_link_executable (info))
142411ca
L		 1330 to_type = R_X86_64_TPOFF32;
1331 break;
1332
1333 default:
1334 return TRUE;
bffbf940
JJ		 1335 }
1336
142411ca
L		 1337 /* Return TRUE if there is no transition. */
1338 if (from_type == to_type)
1339 return TRUE;
1340
1341 /* Check if the transition can be performed. */
1342 if (check
351f65ca
L		 1343 && ! elf_x86_64_check_tls_transition (abfd, info, sec, contents,
1344 symtab_hdr, sym_hashes,
1345 from_type, rel, relend))
142411ca 1346 {
2f629d23 1347 reloc_howto_type *from, *to;
4c544807 1348 const char *name;
142411ca 1349
351f65ca
L		 1350 from = elf_x86_64_rtype_to_howto (abfd, from_type);
1351 to = elf_x86_64_rtype_to_howto (abfd, to_type);
142411ca 1352
f3185997
NC		 1353 if (from == NULL || to == NULL)
1354 return FALSE;
1355
4c544807
L		 1356 if (h)
1357 name = h->root.root.string;
1358 else
1359 {
0afcef53 1360 struct elf_x86_link_hash_table *htab;
4dfe6ac6 1361
0afcef53 1362 htab = elf_x86_hash_table (info, X86_64_ELF_DATA);
4dfe6ac6
NC		 1363 if (htab == NULL)
1364 name = "*unknown*";
1365 else
1366 {
1367 Elf_Internal_Sym *isym;
1368
1369 isym = bfd_sym_from_r_symndx (&htab->sym_cache,
1370 abfd, r_symndx);
1371 name = bfd_elf_sym_name (abfd, symtab_hdr, isym, NULL);
1372 }
4c544807
L		 1373 }
1374
4eca0228 1375 _bfd_error_handler
695344c0 1376 /* xgettext:c-format */
2dcf00ce
AM		 1377 (_("%pB: TLS transition from %s to %s against `%s' at %#" PRIx64
1378 " in section `%pA' failed"),
1379 abfd, from->name, to->name, name, (uint64_t) rel->r_offset, sec);
142411ca
L		 1380 bfd_set_error (bfd_error_bad_value);
1381 return FALSE;
1382 }
1383
1384 *r_type = to_type;
1385 return TRUE;
bffbf940
JJ		 1386}
1387
c1d11331
L		 1388/* Rename some of the generic section flags to better document how they
1389 are used here. */
6999821f 1390#define check_relocs_failed sec_flg0
338c190a
L		 1391
1392static bfd_boolean
aab921ad
L		 1393elf_x86_64_need_pic (struct bfd_link_info *info,
1394 bfd *input_bfd, asection *sec,
338c190a
L		 1395 struct elf_link_hash_entry *h,
1396 Elf_Internal_Shdr *symtab_hdr,
1397 Elf_Internal_Sym *isym,
1398 reloc_howto_type *howto)
1399{
1400 const char *v = "";
1401 const char *und = "";
1402 const char *pic = "";
aab921ad 1403 const char *object;
338c190a
L		 1404
1405 const char *name;
1406 if (h)
1407 {
1408 name = h->root.root.string;
1409 switch (ELF_ST_VISIBILITY (h->other))
1410 {
1411 case STV_HIDDEN:
1412 v = _("hidden symbol ");
1413 break;
1414 case STV_INTERNAL:
1415 v = _("internal symbol ");
1416 break;
1417 case STV_PROTECTED:
1418 v = _("protected symbol ");
1419 break;
1420 default:
0afcef53 1421 if (((struct elf_x86_link_hash_entry *) h)->def_protected)
a5b4ee94
L		 1422 v = _("protected symbol ");
1423 else
1424 v = _("symbol ");
338c190a
L		 1425 pic = _("; recompile with -fPIC");
1426 break;
1427 }
1428
83924b38 1429 if (!SYMBOL_DEFINED_NON_SHARED_P (h) && !h->def_dynamic)
338c190a
L		 1430 und = _("undefined ");
1431 }
1432 else
1433 {
1434 name = bfd_elf_sym_name (input_bfd, symtab_hdr, isym, NULL);
1435 pic = _("; recompile with -fPIC");
1436 }
1437
aab921ad
L		 1438 if (bfd_link_dll (info))
1439 object = _("a shared object");
1440 else if (bfd_link_pie (info))
1441 object = _("a PIE object");
1442 else
1443 object = _("a PDE object");
1444
695344c0 1445 /* xgettext:c-format */
871b3ab2 1446 _bfd_error_handler (_("%pB: relocation %s against %s%s`%s' can "
aab921ad
L		 1447 "not be used when making %s%s"),
1448 input_bfd, howto->name, und, v, name,
1449 object, pic);
338c190a
L		 1450 bfd_set_error (bfd_error_bad_value);
1451 sec->check_relocs_failed = 1;
1452 return FALSE;
1453}
c1d11331 1454
c175a657
L		 1455/* With the local symbol, foo, we convert
1456 mov foo@GOTPCREL(%rip), %reg
1457 to
1458 lea foo(%rip), %reg
1459 and convert
1460 call/jmp *foo@GOTPCREL(%rip)
1461 to
1462 nop call foo/jmp foo nop
1463 When PIC is false, convert
1464 test %reg, foo@GOTPCREL(%rip)
1465 to
1466 test $foo, %reg
1467 and convert
1468 binop foo@GOTPCREL(%rip), %reg
1469 to
1470 binop $foo, %reg
1471 where binop is one of adc, add, and, cmp, or, sbb, sub, xor
1472 instructions. */
1473
1474static bfd_boolean
8b43e456 1475elf_x86_64_convert_load_reloc (bfd *abfd,
c175a657 1476 bfd_byte *contents,
6999821f 1477 unsigned int *r_type_p,
c175a657
L		 1478 Elf_Internal_Rela *irel,
1479 struct elf_link_hash_entry *h,
1480 bfd_boolean *converted,
1481 struct bfd_link_info *link_info)
1482{
0afcef53 1483 struct elf_x86_link_hash_table *htab;
c175a657 1484 bfd_boolean is_pic;
8b43e456 1485 bfd_boolean no_overflow;
c175a657
L		 1486 bfd_boolean relocx;
1487 bfd_boolean to_reloc_pc32;
1488 asection *tsec;
c175a657
L		 1489 bfd_signed_vma raddend;
1490 unsigned int opcode;
1491 unsigned int modrm;
6999821f 1492 unsigned int r_type = *r_type_p;
c175a657 1493 unsigned int r_symndx;
c175a657
L		 1494 bfd_vma roff = irel->r_offset;
1495
1496 if (roff < (r_type == R_X86_64_REX_GOTPCRELX ? 3 : 2))
1497 return TRUE;
1498
1499 raddend = irel->r_addend;
1500 /* Addend for 32-bit PC-relative relocation must be -4. */
1501 if (raddend != -4)
1502 return TRUE;
1503
0afcef53 1504 htab = elf_x86_hash_table (link_info, X86_64_ELF_DATA);
c175a657
L		 1505 is_pic = bfd_link_pic (link_info);
1506
1507 relocx = (r_type == R_X86_64_GOTPCRELX
1508 || r_type == R_X86_64_REX_GOTPCRELX);
1509
8b43e456
L		 1510 /* TRUE if --no-relax is used. */
1511 no_overflow = link_info->disable_target_specific_optimizations > 1;
c175a657
L		 1512
1513 r_symndx = htab->r_sym (irel->r_info);
1514
1515 opcode = bfd_get_8 (abfd, contents + roff - 2);
1516
1517 /* Convert mov to lea since it has been done for a while. */
1518 if (opcode != 0x8b)
1519 {
1520 /* Only convert R_X86_64_GOTPCRELX and R_X86_64_REX_GOTPCRELX
1521 for call, jmp or one of adc, add, and, cmp, or, sbb, sub,
1522 test, xor instructions. */
1523 if (!relocx)
1524 return TRUE;
1525 }
1526
1527 /* We convert only to R_X86_64_PC32:
1528 1. Branch.
1529 2. R_X86_64_GOTPCREL since we can't modify REX byte.
8b43e456 1530 3. no_overflow is true.
c175a657
L		 1531 4. PIC.
1532 */
1533 to_reloc_pc32 = (opcode == 0xff
1534 || !relocx
8b43e456 1535 || no_overflow
c175a657
L		 1536 || is_pic);
1537
1538 /* Get the symbol referred to by the reloc. */
1539 if (h == NULL)
1540 {
1541 Elf_Internal_Sym *isym
1542 = bfd_sym_from_r_symndx (&htab->sym_cache, abfd, r_symndx);
1543
1544 /* Skip relocation against undefined symbols. */
1545 if (isym->st_shndx == SHN_UNDEF)
1546 return TRUE;
1547
c175a657
L		 1548 if (isym->st_shndx == SHN_ABS)
1549 tsec = bfd_abs_section_ptr;
1550 else if (isym->st_shndx == SHN_COMMON)
1551 tsec = bfd_com_section_ptr;
1552 else if (isym->st_shndx == SHN_X86_64_LCOMMON)
1553 tsec = &_bfd_elf_large_com_section;
1554 else
1555 tsec = bfd_section_from_elf_index (abfd, isym->st_shndx);
c175a657
L		 1556 }
1557 else
1558 {
1559 /* Undefined weak symbol is only bound locally in executable
1560 and its reference is resolved as 0 without relocation
1561 overflow. We can only perform this optimization for
1562 GOTPCRELX relocations since we need to modify REX byte.
1563 It is OK convert mov with R_X86_64_GOTPCREL to
1564 R_X86_64_PC32. */
0a27fed7
L		 1565 bfd_boolean local_ref;
1566 struct elf_x86_link_hash_entry *eh = elf_x86_hash_entry (h);
1567
1568 /* NB: Also set linker_def via SYMBOL_REFERENCES_LOCAL_P. */
1569 local_ref = SYMBOL_REFERENCES_LOCAL_P (link_info, h);
c175a657 1570 if ((relocx || opcode == 0x8b)
0a27fed7
L		 1571 && (h->root.type == bfd_link_hash_undefweak
1572 && !eh->linker_def
1573 && local_ref))
c175a657
L		 1574 {
1575 if (opcode == 0xff)
1576 {
1577 /* Skip for branch instructions since R_X86_64_PC32
1578 may overflow. */
8b43e456 1579 if (no_overflow)
c175a657
L		 1580 return TRUE;
1581 }
1582 else if (relocx)
1583 {
1584 /* For non-branch instructions, we can convert to
1585 R_X86_64_32/R_X86_64_32S since we know if there
1586 is a REX byte. */
1587 to_reloc_pc32 = FALSE;
1588 }
1589
1590 /* Since we don't know the current PC when PIC is true,
1591 we can't convert to R_X86_64_PC32. */
1592 if (to_reloc_pc32 && is_pic)
1593 return TRUE;
1594
1595 goto convert;
1596 }
1597 /* Avoid optimizing GOTPCREL relocations againt _DYNAMIC since
1598 ld.so may use its link-time address. */
cbd0eecf 1599 else if (h->start_stop
0a27fed7 1600 || eh->linker_def
cbd0eecf
L		 1601 || ((h->def_regular
1602 || h->root.type == bfd_link_hash_defined
1603 || h->root.type == bfd_link_hash_defweak)
1604 && h != htab->elf.hdynamic
0a27fed7 1605 && local_ref))
c175a657
L		 1606 {
1607 /* bfd_link_hash_new or bfd_link_hash_undefined is
1608 set by an assignment in a linker script in
cbd0eecf
L		 1609 bfd_elf_record_link_assignment. start_stop is set
1610 on __start_SECNAME/__stop_SECNAME which mark section
1611 SECNAME. */
1612 if (h->start_stop
0a27fed7 1613 || eh->linker_def
cbd0eecf
L		 1614 || (h->def_regular
1615 && (h->root.type == bfd_link_hash_new
1616 || h->root.type == bfd_link_hash_undefined
1617 || ((h->root.type == bfd_link_hash_defined
1618 || h->root.type == bfd_link_hash_defweak)
1619 && h->root.u.def.section == bfd_und_section_ptr))))
c175a657
L		 1620 {
1621 /* Skip since R_X86_64_32/R_X86_64_32S may overflow. */
8b43e456 1622 if (no_overflow)
c175a657
L		 1623 return TRUE;
1624 goto convert;
1625 }
1626 tsec = h->root.u.def.section;
c175a657
L		 1627 }
1628 else
1629 return TRUE;
1630 }
1631
2168b268
L		 1632 /* Don't convert GOTPCREL relocation against large section. */
1633 if (elf_section_data (tsec) != NULL
1634 && (elf_section_flags (tsec) & SHF_X86_64_LARGE) != 0)
1635 return TRUE;
1636
8b43e456
L		 1637 /* Skip since R_X86_64_PC32/R_X86_64_32/R_X86_64_32S may overflow. */
1638 if (no_overflow)
1639 return TRUE;
c175a657 1640
dc089072 1641convert:
c175a657
L		 1642 if (opcode == 0xff)
1643 {
1644 /* We have "call/jmp *foo@GOTPCREL(%rip)". */
1645 unsigned int nop;
1646 unsigned int disp;
1647 bfd_vma nop_offset;
1648
1649 /* Convert R_X86_64_GOTPCRELX and R_X86_64_REX_GOTPCRELX to
1650 R_X86_64_PC32. */
1651 modrm = bfd_get_8 (abfd, contents + roff - 1);
1652 if (modrm == 0x25)
1653 {
1654 /* Convert to "jmp foo nop". */
1655 modrm = 0xe9;
1656 nop = NOP_OPCODE;
1657 nop_offset = irel->r_offset + 3;
1658 disp = bfd_get_32 (abfd, contents + irel->r_offset);
1659 irel->r_offset -= 1;
1660 bfd_put_32 (abfd, disp, contents + irel->r_offset);
1661 }
1662 else
1663 {
0afcef53
L		 1664 struct elf_x86_link_hash_entry *eh
1665 = (struct elf_x86_link_hash_entry *) h;
e2cbcd91 1666
c175a657
L		 1667 /* Convert to "nop call foo". ADDR_PREFIX_OPCODE
1668 is a nop prefix. */
1669 modrm = 0xe8;
e2cbcd91
L		 1670 /* To support TLS optimization, always use addr32 prefix for
1671 "call *__tls_get_addr@GOTPCREL(%rip)". */
1d4af308 1672 if (eh && eh->tls_get_addr)
c175a657 1673 {
e2cbcd91
L		 1674 nop = 0x67;
1675 nop_offset = irel->r_offset - 2;
c175a657
L		 1676 }
1677 else
e2cbcd91
L		 1678 {
1679 nop = link_info->call_nop_byte;
1680 if (link_info->call_nop_as_suffix)
1681 {
1682 nop_offset = irel->r_offset + 3;
1683 disp = bfd_get_32 (abfd, contents + irel->r_offset);
1684 irel->r_offset -= 1;
1685 bfd_put_32 (abfd, disp, contents + irel->r_offset);
1686 }
1687 else
1688 nop_offset = irel->r_offset - 2;
1689 }
c175a657
L		 1690 }
1691 bfd_put_8 (abfd, nop, contents + nop_offset);
1692 bfd_put_8 (abfd, modrm, contents + irel->r_offset - 1);
1693 r_type = R_X86_64_PC32;
1694 }
1695 else
1696 {
1697 unsigned int rex;
1698 unsigned int rex_mask = REX_R;
1699
1700 if (r_type == R_X86_64_REX_GOTPCRELX)
1701 rex = bfd_get_8 (abfd, contents + roff - 3);
1702 else
1703 rex = 0;
1704
1705 if (opcode == 0x8b)
1706 {
1707 if (to_reloc_pc32)
1708 {
1709 /* Convert "mov foo@GOTPCREL(%rip), %reg" to
1710 "lea foo(%rip), %reg". */
1711 opcode = 0x8d;
1712 r_type = R_X86_64_PC32;
1713 }
1714 else
1715 {
1716 /* Convert "mov foo@GOTPCREL(%rip), %reg" to
1717 "mov $foo, %reg". */
1718 opcode = 0xc7;
1719 modrm = bfd_get_8 (abfd, contents + roff - 1);
1720 modrm = 0xc0 | (modrm & 0x38) >> 3;
1721 if ((rex & REX_W) != 0
1722 && ABI_64_P (link_info->output_bfd))
1723 {
1724 /* Keep the REX_W bit in REX byte for LP64. */
1725 r_type = R_X86_64_32S;
1726 goto rewrite_modrm_rex;
1727 }
1728 else
1729 {
1730 /* If the REX_W bit in REX byte isn't needed,
1731 use R_X86_64_32 and clear the W bit to avoid
1732 sign-extend imm32 to imm64. */
1733 r_type = R_X86_64_32;
1734 /* Clear the W bit in REX byte. */
1735 rex_mask |= REX_W;
1736 goto rewrite_modrm_rex;
1737 }
1738 }
1739 }
1740 else
1741 {
1742 /* R_X86_64_PC32 isn't supported. */
1743 if (to_reloc_pc32)
1744 return TRUE;
1745
1746 modrm = bfd_get_8 (abfd, contents + roff - 1);
1747 if (opcode == 0x85)
1748 {
1749 /* Convert "test %reg, foo@GOTPCREL(%rip)" to
1750 "test $foo, %reg". */
1751 modrm = 0xc0 | (modrm & 0x38) >> 3;
1752 opcode = 0xf7;
1753 }
1754 else
1755 {
1756 /* Convert "binop foo@GOTPCREL(%rip), %reg" to
1757 "binop $foo, %reg". */
1758 modrm = 0xc0 | (modrm & 0x38) >> 3 | (opcode & 0x3c);
1759 opcode = 0x81;
1760 }
1761
1762 /* Use R_X86_64_32 with 32-bit operand to avoid relocation
1763 overflow when sign-extending imm32 to imm64. */
1764 r_type = (rex & REX_W) != 0 ? R_X86_64_32S : R_X86_64_32;
1765
1766rewrite_modrm_rex:
1767 bfd_put_8 (abfd, modrm, contents + roff - 1);
1768
1769 if (rex)
1770 {
1771 /* Move the R bit to the B bit in REX byte. */
1772 rex = (rex & ~rex_mask) | (rex & REX_R) >> 2;
1773 bfd_put_8 (abfd, rex, contents + roff - 3);
1774 }
1775
1776 /* No addend for R_X86_64_32/R_X86_64_32S relocations. */
1777 irel->r_addend = 0;
1778 }
1779
1780 bfd_put_8 (abfd, opcode, contents + roff - 2);
1781 }
1782
6999821f 1783 *r_type_p = r_type;
78984959
L		 1784 irel->r_info = htab->r_info (r_symndx,
1785 r_type | R_X86_64_converted_reloc_bit);
c175a657
L		 1786
1787 *converted = TRUE;
1788
1789 return TRUE;
1790}
1791
70256ad8 1792/* Look through the relocs for a section during the first phase, and
c434dee6
AJ		 1793 calculate needed space in the global offset table, procedure
1794 linkage table, and dynamic reloc sections. */
70256ad8 1795
b34976b6 1796static bfd_boolean
351f65ca
L		 1797elf_x86_64_check_relocs (bfd *abfd, struct bfd_link_info *info,
1798 asection *sec,
1799 const Elf_Internal_Rela *relocs)
70256ad8 1800{
0afcef53 1801 struct elf_x86_link_hash_table *htab;
70256ad8
AJ		 1802 Elf_Internal_Shdr *symtab_hdr;
1803 struct elf_link_hash_entry **sym_hashes;
70256ad8
AJ		 1804 const Elf_Internal_Rela *rel;
1805 const Elf_Internal_Rela *rel_end;
70256ad8 1806 asection *sreloc;
bedfd056 1807 bfd_byte *contents;
5e5e02ae 1808 bfd_boolean converted;
70256ad8 1809
0e1862bb 1810 if (bfd_link_relocatable (info))
b34976b6 1811 return TRUE;
70256ad8 1812
081b1afe
L		 1813 /* Don't do anything special with non-loaded, non-alloced sections.
1814 In particular, any relocs in such sections should not affect GOT
1815 and PLT reference counting (ie. we don't allow them to create GOT
1816 or PLT entries), there's no possibility or desire to optimize TLS
1817 relocs, and there's not much point in propagating relocs to shared
1818 libs that the dynamic linker won't relocate. */
1819 if ((sec->flags & SEC_ALLOC) == 0)
1820 return TRUE;
1821
0afcef53 1822 htab = elf_x86_hash_table (info, X86_64_ELF_DATA);
4dfe6ac6 1823 if (htab == NULL)
afd9acee
L		 1824 {
1825 sec->check_relocs_failed = 1;
1826 return FALSE;
1827 }
4dfe6ac6 1828
fe53b4a4
L		 1829 BFD_ASSERT (is_x86_elf (abfd, htab));
1830
bedfd056
L		 1831 /* Get the section contents. */
1832 if (elf_section_data (sec)->this_hdr.contents != NULL)
1833 contents = elf_section_data (sec)->this_hdr.contents;
1834 else if (!bfd_malloc_and_get_section (abfd, sec, &contents))
1835 {
1836 sec->check_relocs_failed = 1;
1837 return FALSE;
1838 }
1839
0ffa91dd 1840 symtab_hdr = &elf_symtab_hdr (abfd);
70256ad8 1841 sym_hashes = elf_sym_hashes (abfd);
70256ad8 1842
5e5e02ae
L		 1843 converted = FALSE;
1844
c434dee6 1845 sreloc = NULL;
cbe950e9 1846
70256ad8
AJ		 1847 rel_end = relocs + sec->reloc_count;
1848 for (rel = relocs; rel < rel_end; rel++)
1849 {
bffbf940 1850 unsigned int r_type;
d42c267e 1851 unsigned int r_symndx;
70256ad8 1852 struct elf_link_hash_entry *h;
0afcef53 1853 struct elf_x86_link_hash_entry *eh;
4c544807
L		 1854 Elf_Internal_Sym *isym;
1855 const char *name;
06a6a421 1856 bfd_boolean size_reloc;
6999821f 1857 bfd_boolean converted_reloc;
83924b38 1858 bfd_boolean do_check_pic;
70256ad8 1859
351f65ca
L		 1860 r_symndx = htab->r_sym (rel->r_info);
1861 r_type = ELF32_R_TYPE (rel->r_info);
c434dee6
AJ		 1862
1863 if (r_symndx >= NUM_SHDR_ENTRIES (symtab_hdr))
1864 {
695344c0 1865 /* xgettext:c-format */
871b3ab2 1866 _bfd_error_handler (_("%pB: bad symbol index: %d"),
4eca0228 1867 abfd, r_symndx);
afd9acee 1868 goto error_return;
c434dee6
AJ		 1869 }
1870
70256ad8 1871 if (r_symndx < symtab_hdr->sh_info)
c25bc9fc
L		 1872 {
1873 /* A local symbol. */
c2e61a4e
L		 1874 isym = bfd_sym_from_r_symndx (&htab->sym_cache,
1875 abfd, r_symndx);
1876 if (isym == NULL)
afd9acee 1877 goto error_return;
c25bc9fc
L		 1878
1879 /* Check relocation against local STT_GNU_IFUNC symbol. */
351f65ca 1880 if (ELF_ST_TYPE (isym->st_info) == STT_GNU_IFUNC)
c25bc9fc 1881 {
0afcef53
L		 1882 h = _bfd_elf_x86_get_local_sym_hash (htab, abfd, rel,
1883 TRUE);
c25bc9fc 1884 if (h == NULL)
afd9acee 1885 goto error_return;
6bbec505 1886
c25bc9fc 1887 /* Fake a STT_GNU_IFUNC symbol. */
6322e5c5
L		 1888 h->root.root.string = bfd_elf_sym_name (abfd, symtab_hdr,
1889 isym, NULL);
c25bc9fc
L		 1890 h->type = STT_GNU_IFUNC;
1891 h->def_regular = 1;
1892 h->ref_regular = 1;
1893 h->forced_local = 1;
1894 h->root.type = bfd_link_hash_defined;
1895 }
1896 else
1897 h = NULL;
1898 }
70256ad8 1899 else
71cb9464 1900 {
4c544807 1901 isym = NULL;
71cb9464
L		 1902 h = sym_hashes[r_symndx - symtab_hdr->sh_info];
1903 while (h->root.type == bfd_link_hash_indirect
1904 || h->root.type == bfd_link_hash_warning)
1905 h = (struct elf_link_hash_entry *) h->root.u.i.link;
c25bc9fc 1906 }
cbe950e9 1907
d1534d16
L		 1908 /* Check invalid x32 relocations. */
1909 if (!ABI_64_P (abfd))
1910 switch (r_type)
1911 {
1912 default:
1913 break;
1914
d1534d16
L		 1915 case R_X86_64_DTPOFF64:
1916 case R_X86_64_TPOFF64:
1917 case R_X86_64_PC64:
1918 case R_X86_64_GOTOFF64:
1919 case R_X86_64_GOT64:
1920 case R_X86_64_GOTPCREL64:
1921 case R_X86_64_GOTPC64:
1922 case R_X86_64_GOTPLT64:
1923 case R_X86_64_PLTOFF64:
1924 {
1925 if (h)
1926 name = h->root.root.string;
1927 else
1928 name = bfd_elf_sym_name (abfd, symtab_hdr, isym,
1929 NULL);
4eca0228 1930 _bfd_error_handler
695344c0 1931 /* xgettext:c-format */
871b3ab2 1932 (_("%pB: relocation %s against symbol `%s' isn't "
d1534d16
L		 1933 "supported in x32 mode"), abfd,
1934 x86_64_elf_howto_table[r_type].name, name);
1935 bfd_set_error (bfd_error_bad_value);
afd9acee 1936 goto error_return;
d1534d16
L		 1937 }
1938 break;
1939 }
1940
c25bc9fc
L		 1941 if (h != NULL)
1942 {
ad1e85de
L		 1943 /* It is referenced by a non-shared object. */
1944 h->ref_regular = 1;
13a2df29
L		 1945
1946 if (h->type == STT_GNU_IFUNC)
1947 elf_tdata (info->output_bfd)->has_gnu_symbols
1948 |= elf_gnu_symbol_ifunc;
71cb9464 1949 }
70256ad8 1950
6999821f
L		 1951 converted_reloc = FALSE;
1952 if ((r_type == R_X86_64_GOTPCREL
1953 || r_type == R_X86_64_GOTPCRELX
1954 || r_type == R_X86_64_REX_GOTPCRELX)
1955 && (h == NULL || h->type != STT_GNU_IFUNC))
1956 {
1957 Elf_Internal_Rela *irel = (Elf_Internal_Rela *) rel;
1958 if (!elf_x86_64_convert_load_reloc (abfd, contents, &r_type,
1959 irel, h, &converted_reloc,
1960 info))
1961 goto error_return;
5e5e02ae
L		 1962
1963 if (converted_reloc)
1964 converted = TRUE;
6999821f
L		 1965 }
1966
bedfd056 1967 if (! elf_x86_64_tls_transition (info, abfd, sec, contents,
351f65ca
L		 1968 symtab_hdr, sym_hashes,
1969 &r_type, GOT_UNKNOWN,
bedfd056 1970 rel, rel_end, h, r_symndx, FALSE))
afd9acee 1971 goto error_return;
142411ca 1972
cd048363
L		 1973 /* Check if _GLOBAL_OFFSET_TABLE_ is referenced. */
1974 if (h == htab->elf.hgot)
1975 htab->got_referenced = TRUE;
1976
0afcef53 1977 eh = (struct elf_x86_link_hash_entry *) h;
bffbf940 1978 switch (r_type)
70256ad8 1979 {
bffbf940 1980 case R_X86_64_TLSLD:
0f09b4d8 1981 htab->tls_ld_or_ldm_got.refcount = 1;
bffbf940
JJ		 1982 goto create_got;
1983
1984 case R_X86_64_TPOFF32:
0e1862bb 1985 if (!bfd_link_executable (info) && ABI_64_P (abfd))
aab921ad 1986 return elf_x86_64_need_pic (info, abfd, sec, h, symtab_hdr, isym,
338c190a 1987 &x86_64_elf_howto_table[r_type]);
aec6b87e 1988 if (eh != NULL)
98b273dc 1989 eh->zero_undefweak &= 0x2;
bffbf940 1990 break;
c434dee6 1991
bffbf940 1992 case R_X86_64_GOTTPOFF:
0e1862bb 1993 if (!bfd_link_executable (info))
bffbf940
JJ		 1994 info->flags |= DF_STATIC_TLS;
1995 /* Fall through */
70256ad8 1996
bffbf940
JJ		 1997 case R_X86_64_GOT32:
1998 case R_X86_64_GOTPCREL:
56ceb5b5
L		 1999 case R_X86_64_GOTPCRELX:
2000 case R_X86_64_REX_GOTPCRELX:
bffbf940 2001 case R_X86_64_TLSGD:
7b81dfbb
AJ		 2002 case R_X86_64_GOT64:
2003 case R_X86_64_GOTPCREL64:
2004 case R_X86_64_GOTPLT64:
67a4f2b7
AO		 2005 case R_X86_64_GOTPC32_TLSDESC:
2006 case R_X86_64_TLSDESC_CALL:
bffbf940
JJ		 2007 /* This symbol requires a global offset table entry. */
2008 {
2009 int tls_type, old_tls_type;
2010
2011 switch (r_type)
2012 {
2013 default: tls_type = GOT_NORMAL; break;
2014 case R_X86_64_TLSGD: tls_type = GOT_TLS_GD; break;
2015 case R_X86_64_GOTTPOFF: tls_type = GOT_TLS_IE; break;
67a4f2b7
AO		 2016 case R_X86_64_GOTPC32_TLSDESC:
2017 case R_X86_64_TLSDESC_CALL:
2018 tls_type = GOT_TLS_GDESC; break;
bffbf940
JJ		 2019 }
2020
2021 if (h != NULL)
2022 {
0f09b4d8 2023 h->got.refcount = 1;
aec6b87e 2024 old_tls_type = eh->tls_type;
bffbf940
JJ		 2025 }
2026 else
2027 {
2028 bfd_signed_vma *local_got_refcounts;
2029
2030 /* This is a global offset table entry for a local symbol. */
2031 local_got_refcounts = elf_local_got_refcounts (abfd);
2032 if (local_got_refcounts == NULL)
2033 {
2034 bfd_size_type size;
2035
2036 size = symtab_hdr->sh_info;
67a4f2b7
AO		 2037 size *= sizeof (bfd_signed_vma)
2038 + sizeof (bfd_vma) + sizeof (char);
bffbf940
JJ		 2039 local_got_refcounts = ((bfd_signed_vma *)
2040 bfd_zalloc (abfd, size));
2041 if (local_got_refcounts == NULL)
afd9acee 2042 goto error_return;
bffbf940 2043 elf_local_got_refcounts (abfd) = local_got_refcounts;
0afcef53 2044 elf_x86_local_tlsdesc_gotent (abfd)
67a4f2b7 2045 = (bfd_vma *) (local_got_refcounts + symtab_hdr->sh_info);
0afcef53 2046 elf_x86_local_got_tls_type (abfd)
67a4f2b7 2047 = (char *) (local_got_refcounts + 2 * symtab_hdr->sh_info);
bffbf940 2048 }
0f09b4d8 2049 local_got_refcounts[r_symndx] = 1;
bffbf940 2050 old_tls_type
0afcef53 2051 = elf_x86_local_got_tls_type (abfd) [r_symndx];
bffbf940
JJ		 2052 }
2053
2054 /* If a TLS symbol is accessed using IE at least once,
2055 there is no point to use dynamic model for it. */
2056 if (old_tls_type != tls_type && old_tls_type != GOT_UNKNOWN
67a4f2b7
AO		 2057 && (! GOT_TLS_GD_ANY_P (old_tls_type)
2058 || tls_type != GOT_TLS_IE))
bffbf940 2059 {
67a4f2b7 2060 if (old_tls_type == GOT_TLS_IE && GOT_TLS_GD_ANY_P (tls_type))
bffbf940 2061 tls_type = old_tls_type;
67a4f2b7
AO		 2062 else if (GOT_TLS_GD_ANY_P (old_tls_type)
2063 && GOT_TLS_GD_ANY_P (tls_type))
2064 tls_type |= old_tls_type;
bffbf940
JJ		 2065 else
2066 {
09a24cbf 2067 if (h)
4c544807
L		 2068 name = h->root.root.string;
2069 else
2070 name = bfd_elf_sym_name (abfd, symtab_hdr,
2071 isym, NULL);
4eca0228 2072 _bfd_error_handler
695344c0 2073 /* xgettext:c-format */
871b3ab2 2074 (_("%pB: '%s' accessed both as normal and"
63a5468a 2075 " thread local symbol"),
4c544807 2076 abfd, name);
68c4a57e 2077 bfd_set_error (bfd_error_bad_value);
afd9acee 2078 goto error_return;
bffbf940
JJ		 2079 }
2080 }
2081
2082 if (old_tls_type != tls_type)
2083 {
aec6b87e
L		 2084 if (eh != NULL)
2085 eh->tls_type = tls_type;
bffbf940 2086 else
0afcef53 2087 elf_x86_local_got_tls_type (abfd) [r_symndx] = tls_type;
bffbf940
JJ		 2088 }
2089 }
c434dee6
AJ		 2090 /* Fall through */
2091
d6ab8113
JB		 2092 case R_X86_64_GOTOFF64:
2093 case R_X86_64_GOTPC32:
7b81dfbb 2094 case R_X86_64_GOTPC64:
bffbf940 2095 create_got:
aec6b87e 2096 if (eh != NULL)
98b273dc 2097 eh->zero_undefweak &= 0x2;
70256ad8
AJ		 2098 break;
2099
2100 case R_X86_64_PLT32:
c3320543 2101 case R_X86_64_PLT32_BND:
70256ad8 2102 /* This symbol requires a procedure linkage table entry. We
407443a3
AJ		 2103 actually build the entry in adjust_dynamic_symbol,
2104 because this might be a case of linking PIC code which is
2105 never referenced by a dynamic object, in which case we
2106 don't need to generate a procedure linkage table entry
2107 after all. */
70256ad8
AJ		 2108
2109 /* If this is a local symbol, we resolve it directly without
407443a3 2110 creating a procedure linkage table entry. */
70256ad8
AJ		 2111 if (h == NULL)
2112 continue;
2113
98b273dc 2114 eh->zero_undefweak &= 0x2;
f5385ebf 2115 h->needs_plt = 1;
79b0c981 2116 h->plt.refcount = 1;
70256ad8
AJ		 2117 break;
2118
7b81dfbb
AJ		 2119 case R_X86_64_PLTOFF64:
2120 /* This tries to form the 'address' of a function relative
2121 to GOT. For global symbols we need a PLT entry. */
2122 if (h != NULL)
2123 {
2124 h->needs_plt = 1;
79b0c981 2125 h->plt.refcount = 1;
7b81dfbb
AJ		 2126 }
2127 goto create_got;
2128
6a3e1bae
L		 2129 case R_X86_64_SIZE32:
2130 case R_X86_64_SIZE64:
06a6a421 2131 size_reloc = TRUE;
6a3e1bae
L		 2132 goto do_size;
2133
83924b38
L		 2134 case R_X86_64_PC8:
2135 case R_X86_64_PC16:
2136 case R_X86_64_PC32:
2137 case R_X86_64_PC32_BND:
2138 do_check_pic = TRUE;
2139 goto check_pic;
2140
248775ba
L		 2141 case R_X86_64_32:
2142 if (!ABI_64_P (abfd))
2143 goto pointer;
1a0670f3 2144 /* Fall through. */
cc78d0af
AJ		 2145 case R_X86_64_8:
2146 case R_X86_64_16:
70256ad8 2147 case R_X86_64_32S:
338c190a
L		 2148 /* Check relocation overflow as these relocs may lead to
2149 run-time relocation overflow. Don't error out for
1b71fb54 2150 sections we don't care about, such as debug sections or
338c190a 2151 when relocation overflow check is disabled. */
4c10bbaa 2152 if (!info->no_reloc_overflow_check
6999821f 2153 && !converted_reloc
338c190a
L		 2154 && (bfd_link_pic (info)
2155 || (bfd_link_executable (info)
2156 && h != NULL
2157 && !h->def_regular
2158 && h->def_dynamic
081b1afe 2159 && (sec->flags & SEC_READONLY) == 0)))
aab921ad 2160 return elf_x86_64_need_pic (info, abfd, sec, h, symtab_hdr, isym,
338c190a 2161 &x86_64_elf_howto_table[r_type]);
1b71fb54
AJ		 2162 /* Fall through. */
2163
d6ab8113 2164 case R_X86_64_PC64:
1b71fb54 2165 case R_X86_64_64:
248775ba 2166pointer:
83924b38
L		 2167 do_check_pic = FALSE;
2168check_pic:
aec6b87e 2169 if (eh != NULL && (sec->flags & SEC_CODE) != 0)
98b273dc 2170 eh->zero_undefweak |= 0x2;
bf52d7c7
L		 2171 /* We are called after all symbols have been resolved. Only
2172 relocation against STT_GNU_IFUNC symbol must go through
2173 PLT. */
d1ed1c7d
L		 2174 if (h != NULL
2175 && (bfd_link_executable (info)
bf52d7c7 2176 || h->type == STT_GNU_IFUNC))
c434dee6 2177 {
79b0c981 2178 bfd_boolean func_pointer_ref = FALSE;
233cc9c1 2179
5db4f0d3
L		 2180 if (r_type == R_X86_64_PC32)
2181 {
2182 /* Since something like ".long foo - ." may be used
2183 as pointer, make sure that PLT is used if foo is
2184 a function defined in a shared library. */
2185 if ((sec->flags & SEC_CODE) == 0)
451875b4
L		 2186 {
2187 h->pointer_equality_needed = 1;
2188 if (bfd_link_pie (info)
2189 && h->type == STT_FUNC
2190 && !h->def_regular
2191 && h->def_dynamic)
2192 {
2193 h->needs_plt = 1;
2194 h->plt.refcount = 1;
2195 }
2196 }
5db4f0d3
L		 2197 }
2198 else if (r_type != R_X86_64_PC32_BND
2199 && r_type != R_X86_64_PC64)
04ebc307
L		 2200 {
2201 h->pointer_equality_needed = 1;
2202 /* At run-time, R_X86_64_64 can be resolved for both
2203 x86-64 and x32. But R_X86_64_32 and R_X86_64_32S
2204 can only be resolved for x32. */
2205 if ((sec->flags & SEC_READONLY) == 0
2206 && (r_type == R_X86_64_64
2207 || (!ABI_64_P (abfd)
2208 && (r_type == R_X86_64_32
2209 || r_type == R_X86_64_32S))))
79b0c981
L		 2210 func_pointer_ref = TRUE;
2211 }
2212
2213 if (!func_pointer_ref)
2214 {
2215 /* If this reloc is in a read-only section, we might
2216 need a copy reloc. We can't check reliably at this
2217 stage whether the section is read-only, as input
2218 sections have not yet been mapped to output sections.
2219 Tentatively set the flag for now, and correct in
2220 adjust_dynamic_symbol. */
2221 h->non_got_ref = 1;
2222
2223 /* We may need a .plt entry if the symbol is a function
2224 defined in a shared lib or is a function referenced
2225 from the code or read-only section. */
2226 if (!h->def_regular
2227 || (sec->flags & (SEC_CODE | SEC_READONLY)) != 0)
2228 h->plt.refcount = 1;
04ebc307 2229 }
c434dee6 2230 }
70256ad8 2231
83924b38
L		 2232 if (do_check_pic)
2233 {
2234 /* Don't complain about -fPIC if the symbol is undefined
2235 when building executable unless it is unresolved weak
2236 symbol, references a dynamic definition in PIE or
2237 -z nocopyreloc is used. */
2238 bfd_boolean no_copyreloc_p
2239 = (info->nocopyreloc
2240 || (h != NULL
2241 && eh->def_protected
2242 && elf_has_no_copy_on_protected (h->root.u.def.section->owner)));
2243 if ((sec->flags & SEC_ALLOC) != 0
2244 && (sec->flags & SEC_READONLY) != 0
2245 && h != NULL
2246 && ((bfd_link_executable (info)
2247 && ((h->root.type == bfd_link_hash_undefweak
2248 && (eh == NULL
2249 || !UNDEFINED_WEAK_RESOLVED_TO_ZERO (info,
2250 eh)))
2251 || (bfd_link_pie (info)
2252 && !SYMBOL_DEFINED_NON_SHARED_P (h)
2253 && h->def_dynamic)
2254 || (no_copyreloc_p
2255 && h->def_dynamic
2256 && !(h->root.u.def.section->flags & SEC_CODE))))
2257 || bfd_link_dll (info)))
2258 {
2259 bfd_boolean fail = FALSE;
2260 if (SYMBOL_REFERENCES_LOCAL_P (info, h))
2261 {
2262 /* Symbol is referenced locally. Make sure it is
2263 defined locally. */
2264 fail = !SYMBOL_DEFINED_NON_SHARED_P (h);
2265 }
2266 else if (bfd_link_pie (info))
2267 {
2268 /* We can only use PC-relative relocations in PIE
2269 from non-code sections. */
2270 if (h->type == STT_FUNC
2271 && (sec->flags & SEC_CODE) != 0)
2272 fail = TRUE;
2273 }
2274 else if (no_copyreloc_p || bfd_link_dll (info))
2275 {
2276 /* Symbol doesn't need copy reloc and isn't
2277 referenced locally. Don't allow PC-relative
2278 relocations against default and protected
2279 symbols since address of protected function
2280 and location of protected data may not be in
2281 the shared object. */
2282 fail = (ELF_ST_VISIBILITY (h->other) == STV_DEFAULT
2283 || ELF_ST_VISIBILITY (h->other) == STV_PROTECTED);
2284 }
2285
2286 if (fail)
2287 return elf_x86_64_need_pic (info, abfd, sec, h,
2288 symtab_hdr, isym,
2289 &x86_64_elf_howto_table[r_type]);
2290 }
2291 }
2292
06a6a421 2293 size_reloc = FALSE;
6a3e1bae 2294do_size:
451875b4 2295 if (NEED_DYNAMIC_RELOCATION_P (info, TRUE, h, sec, r_type,
daf1c414 2296 htab->pointer_r_type))
70256ad8 2297 {
e03a8ed8
L		 2298 struct elf_dyn_relocs *p;
2299 struct elf_dyn_relocs **head;
c434dee6
AJ		 2300
2301 /* We must copy these reloc types into the output file.
2302 Create a reloc section in dynobj and make room for
2303 this reloc. */
70256ad8
AJ		 2304 if (sreloc == NULL)
2305 {
83bac4b0 2306 sreloc = _bfd_elf_make_dynamic_reloc_section
82e96e07
L		 2307 (sec, htab->elf.dynobj, ABI_64_P (abfd) ? 3 : 2,
2308 abfd, /*rela?*/ TRUE);
70256ad8 2309
70256ad8 2310 if (sreloc == NULL)
afd9acee 2311 goto error_return;
70256ad8
AJ		 2312 }
2313
c434dee6
AJ		 2314 /* If this is a global symbol, we count the number of
2315 relocations we need for this symbol. */
2316 if (h != NULL)
aec6b87e 2317 head = &eh->dyn_relocs;
c434dee6
AJ		 2318 else
2319 {
2320 /* Track dynamic relocs needed for local syms too.
2321 We really need local syms available to do this
2322 easily. Oh well. */
c434dee6 2323 asection *s;
87d72d41 2324 void **vpp;
87d72d41
AM		 2325
2326 isym = bfd_sym_from_r_symndx (&htab->sym_cache,
2327 abfd, r_symndx);
2328 if (isym == NULL)
afd9acee 2329 goto error_return;
87d72d41
AM		 2330
2331 s = bfd_section_from_elf_index (abfd, isym->st_shndx);
c434dee6 2332 if (s == NULL)
87d72d41 2333 s = sec;
70256ad8 2334
e81d3500
DD		 2335 /* Beware of type punned pointers vs strict aliasing
2336 rules. */
2337 vpp = &(elf_section_data (s)->local_dynrel);
e03a8ed8 2338 head = (struct elf_dyn_relocs **)vpp;
c434dee6 2339 }
70256ad8 2340
c434dee6
AJ		 2341 p = *head;
2342 if (p == NULL || p->sec != sec)
2343 {
2344 bfd_size_type amt = sizeof *p;
d8045f23 2345
e03a8ed8 2346 p = ((struct elf_dyn_relocs *)
c434dee6 2347 bfd_alloc (htab->elf.dynobj, amt));
70256ad8 2348 if (p == NULL)
afd9acee 2349 goto error_return;
c434dee6
AJ		 2350 p->next = *head;
2351 *head = p;
2352 p->sec = sec;
2353 p->count = 0;
2354 p->pc_count = 0;
70256ad8 2355 }
c434dee6
AJ		 2356
2357 p->count += 1;
06a6a421 2358 /* Count size relocation as PC-relative relocation. */
daf1c414 2359 if (X86_PCREL_TYPE_P (r_type) || size_reloc)
c434dee6 2360 p->pc_count += 1;
70256ad8
AJ		 2361 }
2362 break;
fe4770f4
AJ		 2363
2364 /* This relocation describes the C++ object vtable hierarchy.
2365 Reconstruct it for later use during GC. */
2366 case R_X86_64_GNU_VTINHERIT:
c152c796 2367 if (!bfd_elf_gc_record_vtinherit (abfd, sec, h, rel->r_offset))
afd9acee 2368 goto error_return;
fe4770f4
AJ		 2369 break;
2370
2371 /* This relocation describes which C++ vtable entries are actually
2372 used. Record for later use during GC. */
2373 case R_X86_64_GNU_VTENTRY:
d17e0c6e
JB		 2374 BFD_ASSERT (h != NULL);
2375 if (h != NULL
2376 && !bfd_elf_gc_record_vtentry (abfd, sec, h, rel->r_addend))
afd9acee 2377 goto error_return;
fe4770f4 2378 break;
c434dee6
AJ		 2379
2380 default:
2381 break;
70256ad8
AJ		 2382 }
2383 }
2384
bedfd056
L		 2385 if (elf_section_data (sec)->this_hdr.contents != contents)
2386 {
5e5e02ae 2387 if (!converted && !info->keep_memory)
bedfd056
L		 2388 free (contents);
2389 else
2390 {
5e5e02ae
L		 2391 /* Cache the section contents for elf_link_input_bfd if any
2392 load is converted or --no-keep-memory isn't used. */
bedfd056
L		 2393 elf_section_data (sec)->this_hdr.contents = contents;
2394 }
2395 }
2396
5e5e02ae
L		 2397 /* Cache relocations if any load is converted. */
2398 if (elf_section_data (sec)->relocs != relocs && converted)
2399 elf_section_data (sec)->relocs = (Elf_Internal_Rela *) relocs;
2400
b34976b6 2401 return TRUE;
afd9acee
L		 2402
2403error_return:
bedfd056
L		 2404 if (elf_section_data (sec)->this_hdr.contents != contents)
2405 free (contents);
afd9acee
L		 2406 sec->check_relocs_failed = 1;
2407 return FALSE;
70256ad8
AJ		 2408}
2409
bffbf940
JJ		 2410/* Return the relocation value for @tpoff relocation
2411 if STT_TLS virtual address is ADDRESS. */
2412
2413static bfd_vma
351f65ca 2414elf_x86_64_tpoff (struct bfd_link_info *info, bfd_vma address)
bffbf940 2415{
e1918d23 2416 struct elf_link_hash_table *htab = elf_hash_table (info);
7dc98aea
RO		 2417 const struct elf_backend_data *bed = get_elf_backend_data (info->output_bfd);
2418 bfd_vma static_tls_size;
bffbf940
JJ		 2419
2420 /* If tls_segment is NULL, we should have signalled an error already. */
e1918d23 2421 if (htab->tls_sec == NULL)
bffbf940 2422 return 0;
7dc98aea
RO		 2423
2424 /* Consider special static TLS alignment requirements. */
2425 static_tls_size = BFD_ALIGN (htab->tls_size, bed->static_tls_alignment);
2426 return address - static_tls_size - htab->tls_sec->vma;
bffbf940
JJ		 2427}
2428
8d88c4ca
NC		 2429/* Relocate an x86_64 ELF section. */
2430
b34976b6 2431static bfd_boolean
351f65ca
L		 2432elf_x86_64_relocate_section (bfd *output_bfd,
2433 struct bfd_link_info *info,
2434 bfd *input_bfd,
2435 asection *input_section,
2436 bfd_byte *contents,
2437 Elf_Internal_Rela *relocs,
2438 Elf_Internal_Sym *local_syms,
2439 asection **local_sections)
8d88c4ca 2440{
0afcef53 2441 struct elf_x86_link_hash_table *htab;
8d88c4ca
NC		 2442 Elf_Internal_Shdr *symtab_hdr;
2443 struct elf_link_hash_entry **sym_hashes;
2444 bfd_vma *local_got_offsets;
67a4f2b7 2445 bfd_vma *local_tlsdesc_gotents;
c434dee6 2446 Elf_Internal_Rela *rel;
60f2e42e 2447 Elf_Internal_Rela *wrel;
8d88c4ca 2448 Elf_Internal_Rela *relend;
38b12349 2449 unsigned int plt_entry_size;
8d88c4ca 2450
338c190a
L		 2451 /* Skip if check_relocs failed. */
2452 if (input_section->check_relocs_failed)
2453 return FALSE;
2454
0afcef53 2455 htab = elf_x86_hash_table (info, X86_64_ELF_DATA);
4dfe6ac6
NC		 2456 if (htab == NULL)
2457 return FALSE;
fe53b4a4 2458
7af5d5c4
AM		 2459 if (!is_x86_elf (input_bfd, htab))
2460 {
2461 bfd_set_error (bfd_error_wrong_format);
2462 return FALSE;
2463 }
fe53b4a4 2464
765e526c 2465 plt_entry_size = htab->plt.plt_entry_size;
0ffa91dd 2466 symtab_hdr = &elf_symtab_hdr (input_bfd);
8d88c4ca
NC		 2467 sym_hashes = elf_sym_hashes (input_bfd);
2468 local_got_offsets = elf_local_got_offsets (input_bfd);
0afcef53 2469 local_tlsdesc_gotents = elf_x86_local_tlsdesc_gotent (input_bfd);
8d88c4ca 2470
0afcef53 2471 _bfd_x86_elf_set_tls_module_base (info);
9f03412a 2472
60f2e42e 2473 rel = wrel = relocs;
8d88c4ca 2474 relend = relocs + input_section->reloc_count;
60f2e42e 2475 for (; rel < relend; wrel++, rel++)
8d88c4ca 2476 {
419414ea 2477 unsigned int r_type, r_type_tls;
8d88c4ca
NC		 2478 reloc_howto_type *howto;
2479 unsigned long r_symndx;
2480 struct elf_link_hash_entry *h;
0afcef53 2481 struct elf_x86_link_hash_entry *eh;
8d88c4ca
NC		 2482 Elf_Internal_Sym *sym;
2483 asection *sec;
0ff2b86e 2484 bfd_vma off, offplt, plt_offset;
8d88c4ca 2485 bfd_vma relocation;
b34976b6 2486 bfd_boolean unresolved_reloc;
8d88c4ca 2487 bfd_reloc_status_type r;
bffbf940 2488 int tls_type;
0ff2b86e 2489 asection *base_got, *resolved_plt;
1788fc08 2490 bfd_vma st_size;
aec6b87e 2491 bfd_boolean resolved_to_zero;
9e9821dd 2492 bfd_boolean relative_reloc;
78984959 2493 bfd_boolean converted_reloc;
aebcc8ff 2494 bfd_boolean need_copy_reloc_in_pie;
8d88c4ca 2495
351f65ca 2496 r_type = ELF32_R_TYPE (rel->r_info);
fe4770f4
AJ		 2497 if (r_type == (int) R_X86_64_GNU_VTINHERIT
2498 || r_type == (int) R_X86_64_GNU_VTENTRY)
18954b29
L		 2499 {
2500 if (wrel != rel)
2501 *wrel = *rel;
2502 continue;
2503 }
8d88c4ca 2504
b638b5d5 2505 r_symndx = htab->r_sym (rel->r_info);
78984959 2506 converted_reloc = (r_type & R_X86_64_converted_reloc_bit) != 0;
b638b5d5
L		 2507 if (converted_reloc)
2508 {
2509 r_type &= ~R_X86_64_converted_reloc_bit;
2510 rel->r_info = htab->r_info (r_symndx, r_type);
2511 }
78984959 2512
76268e02
L		 2513 howto = elf_x86_64_rtype_to_howto (input_bfd, r_type);
2514 if (howto == NULL)
47aeb64c 2515 return _bfd_unrecognized_reloc (input_bfd, input_section, r_type);
8d88c4ca 2516
8d88c4ca
NC		 2517 h = NULL;
2518 sym = NULL;
2519 sec = NULL;
b34976b6 2520 unresolved_reloc = FALSE;
8d88c4ca 2521 if (r_symndx < symtab_hdr->sh_info)
8da6118f
KH		 2522 {
2523 sym = local_syms + r_symndx;
2524 sec = local_sections[r_symndx];
c434dee6 2525
c25bc9fc
L		 2526 relocation = _bfd_elf_rela_local_sym (output_bfd, sym,
2527 &sec, rel);
1788fc08 2528 st_size = sym->st_size;
c25bc9fc
L		 2529
2530 /* Relocate against local STT_GNU_IFUNC symbol. */
0e1862bb 2531 if (!bfd_link_relocatable (info)
351f65ca 2532 && ELF_ST_TYPE (sym->st_info) == STT_GNU_IFUNC)
c25bc9fc 2533 {
0afcef53
L		 2534 h = _bfd_elf_x86_get_local_sym_hash (htab, input_bfd,
2535 rel, FALSE);
c25bc9fc
L		 2536 if (h == NULL)
2537 abort ();
2538
eed180f8 2539 /* Set STT_GNU_IFUNC symbol value. */
c25bc9fc
L		 2540 h->root.u.def.value = sym->st_value;
2541 h->root.u.def.section = sec;
2542 }
8da6118f 2543 }
8d88c4ca 2544 else
8da6118f 2545 {
c9736ba0 2546 bfd_boolean warned ATTRIBUTE_UNUSED;
62d887d4 2547 bfd_boolean ignored ATTRIBUTE_UNUSED;
c434dee6 2548
b2a8e766
AM		 2549 RELOC_FOR_GLOBAL_SYMBOL (info, input_bfd, input_section, rel,
2550 r_symndx, symtab_hdr, sym_hashes,
2551 h, sec, relocation,
62d887d4 2552 unresolved_reloc, warned, ignored);
1788fc08 2553 st_size = h->size;
8da6118f 2554 }
ab96bf03 2555
dbaa2011 2556 if (sec != NULL && discarded_section (sec))
60f2e42e
L		 2557 {
2558 _bfd_clear_contents (howto, input_bfd, input_section,
0930cb30 2559 contents, rel->r_offset);
60f2e42e
L		 2560 wrel->r_offset = rel->r_offset;
2561 wrel->r_info = 0;
2562 wrel->r_addend = 0;
2563
2564 /* For ld -r, remove relocations in debug sections against
2565 sections defined in discarded sections. Not done for
2566 eh_frame editing code expects to be present. */
2567 if (bfd_link_relocatable (info)
2568 && (input_section->flags & SEC_DEBUGGING))
2569 wrel--;
2570
2571 continue;
2572 }
ab96bf03 2573
0e1862bb 2574 if (bfd_link_relocatable (info))
2d5da473
L		 2575 {
2576 if (wrel != rel)
2577 *wrel = *rel;
2578 continue;
2579 }
ab96bf03 2580
1788fc08 2581 if (rel->r_addend == 0 && !ABI_64_P (output_bfd))
64d25c44 2582 {
1788fc08
L		 2583 if (r_type == R_X86_64_64)
2584 {
2585 /* For x32, treat R_X86_64_64 like R_X86_64_32 and
2586 zero-extend it to 64bit if addend is zero. */
2587 r_type = R_X86_64_32;
2588 memset (contents + rel->r_offset + 4, 0, 4);
2589 }
2590 else if (r_type == R_X86_64_SIZE64)
2591 {
2592 /* For x32, treat R_X86_64_SIZE64 like R_X86_64_SIZE32 and
2593 zero-extend it to 64bit if addend is zero. */
2594 r_type = R_X86_64_SIZE32;
2595 memset (contents + rel->r_offset + 4, 0, 4);
2596 }
64d25c44
L		 2597 }
2598
0afcef53 2599 eh = (struct elf_x86_link_hash_entry *) h;
0ff2b86e 2600
cbe950e9
L		 2601 /* Since STT_GNU_IFUNC symbol must go through PLT, we handle
2602 it here if it is defined in a non-shared object. */
2603 if (h != NULL
2604 && h->type == STT_GNU_IFUNC
2605 && h->def_regular)
2606 {
cbe950e9 2607 bfd_vma plt_index;
4c544807 2608 const char *name;
cbe950e9 2609
97dc35c8
L		 2610 if ((input_section->flags & SEC_ALLOC) == 0)
2611 {
347a8774
L		 2612 /* If this is a SHT_NOTE section without SHF_ALLOC, treat
2613 STT_GNU_IFUNC symbol as STT_FUNC. */
2614 if (elf_section_type (input_section) == SHT_NOTE)
2615 goto skip_ifunc;
97dc35c8
L		 2616 /* Dynamic relocs are not propagated for SEC_DEBUGGING
2617 sections because such sections are not SEC_ALLOC and
2618 thus ld.so will not process them. */
2619 if ((input_section->flags & SEC_DEBUGGING) != 0)
0eace210 2620 continue;
97dc35c8
L		 2621 abort ();
2622 }
233cc9c1
L		 2623
2624 switch (r_type)
2625 {
2626 default:
2627 break;
2628
2629 case R_X86_64_GOTPCREL:
2630 case R_X86_64_GOTPCRELX:
2631 case R_X86_64_REX_GOTPCRELX:
2632 case R_X86_64_GOTPCREL64:
2633 base_got = htab->elf.sgot;
2634 off = h->got.offset;
2635
2636 if (base_got == NULL)
2637 abort ();
2638
2639 if (off == (bfd_vma) -1)
2640 {
2641 /* We can't use h->got.offset here to save state, or
2642 even just remember the offset, as finish_dynamic_symbol
2643 would use that as offset into .got. */
2644
2645 if (h->plt.offset == (bfd_vma) -1)
2646 abort ();
2647
2648 if (htab->elf.splt != NULL)
2649 {
38b12349 2650 plt_index = (h->plt.offset / plt_entry_size
765e526c 2651 - htab->plt.has_plt0);
233cc9c1
L		 2652 off = (plt_index + 3) * GOT_ENTRY_SIZE;
2653 base_got = htab->elf.sgotplt;
2654 }
2655 else
2656 {
2657 plt_index = h->plt.offset / plt_entry_size;
2658 off = plt_index * GOT_ENTRY_SIZE;
2659 base_got = htab->elf.igotplt;
2660 }
2661
2662 if (h->dynindx == -1
2663 || h->forced_local
2664 || info->symbolic)
2665 {
2666 /* This references the local defitionion. We must
2667 initialize this entry in the global offset table.
2668 Since the offset must always be a multiple of 8,
2669 we use the least significant bit to record
2670 whether we have initialized it already.
2671
2672 When doing a dynamic link, we create a .rela.got
2673 relocation entry to initialize the value. This
2674 is done in the finish_dynamic_symbol routine. */
2675 if ((off & 1) != 0)
2676 off &= ~1;
2677 else
2678 {
2679 bfd_put_64 (output_bfd, relocation,
2680 base_got->contents + off);
2681 /* Note that this is harmless for the GOTPLT64
2682 case, as -1 | 1 still is -1. */
2683 h->got.offset |= 1;
2684 }
2685 }
2686 }
2687
2688 relocation = (base_got->output_section->vma
2689 + base_got->output_offset + off);
2690
2691 goto do_relocation;
2692 }
2693
2694 if (h->plt.offset == (bfd_vma) -1)
2695 {
2696 /* Handle static pointers of STT_GNU_IFUNC symbols. */
2697 if (r_type == htab->pointer_r_type
2698 && (input_section->flags & SEC_CODE) == 0)
2699 goto do_ifunc_pointer;
2700 goto bad_ifunc_reloc;
2701 }
cbe950e9
L		 2702
2703 /* STT_GNU_IFUNC symbol must go through PLT. */
0ff2b86e
L		 2704 if (htab->elf.splt != NULL)
2705 {
f2c29a16 2706 if (htab->plt_second != NULL)
0ff2b86e 2707 {
f2c29a16
L		 2708 resolved_plt = htab->plt_second;
2709 plt_offset = eh->plt_second.offset;
0ff2b86e
L		 2710 }
2711 else
2712 {
2713 resolved_plt = htab->elf.splt;
2714 plt_offset = h->plt.offset;
2715 }
2716 }
2717 else
2718 {
2719 resolved_plt = htab->elf.iplt;
2720 plt_offset = h->plt.offset;
2721 }
2722
2723 relocation = (resolved_plt->output_section->vma
2724 + resolved_plt->output_offset + plt_offset);
cbe950e9
L		 2725
2726 switch (r_type)
2727 {
2728 default:
233cc9c1 2729bad_ifunc_reloc:
4c544807
L		 2730 if (h->root.root.string)
2731 name = h->root.root.string;
2732 else
2733 name = bfd_elf_sym_name (input_bfd, symtab_hdr, sym,
2734 NULL);
4eca0228 2735 _bfd_error_handler
695344c0 2736 /* xgettext:c-format */
871b3ab2 2737 (_("%pB: relocation %s against STT_GNU_IFUNC "
233cc9c1
L		 2738 "symbol `%s' isn't supported"), input_bfd,
2739 howto->name, name);
cbe950e9
L		 2740 bfd_set_error (bfd_error_bad_value);
2741 return FALSE;
2742
2743 case R_X86_64_32S:
0e1862bb 2744 if (bfd_link_pic (info))
cbe950e9 2745 abort ();
710ab287
L		 2746 goto do_relocation;
2747
248775ba
L		 2748 case R_X86_64_32:
2749 if (ABI_64_P (output_bfd))
2750 goto do_relocation;
17672001 2751 /* FALLTHROUGH */
eed180f8 2752 case R_X86_64_64:
233cc9c1 2753do_ifunc_pointer:
710ab287
L		 2754 if (rel->r_addend != 0)
2755 {
4c544807
L		 2756 if (h->root.root.string)
2757 name = h->root.root.string;
2758 else
2759 name = bfd_elf_sym_name (input_bfd, symtab_hdr,
2760 sym, NULL);
4eca0228 2761 _bfd_error_handler
695344c0 2762 /* xgettext:c-format */
871b3ab2 2763 (_("%pB: relocation %s against STT_GNU_IFUNC "
2dcf00ce
AM		 2764 "symbol `%s' has non-zero addend: %" PRId64),
2765 input_bfd, howto->name, name, (int64_t) rel->r_addend);
710ab287
L		 2766 bfd_set_error (bfd_error_bad_value);
2767 return FALSE;
2768 }
2769
2770 /* Generate dynamic relcoation only when there is a
233cc9c1
L		 2771 non-GOT reference in a shared object or there is no
2772 PLT. */
2773 if ((bfd_link_pic (info) && h->non_got_ref)
2774 || h->plt.offset == (bfd_vma) -1)
710ab287
L		 2775 {
2776 Elf_Internal_Rela outrel;
710ab287
L		 2777 asection *sreloc;
2778
c25bc9fc
L		 2779 /* Need a dynamic relocation to get the real function
2780 address. */
710ab287
L		 2781 outrel.r_offset = _bfd_elf_section_offset (output_bfd,
2782 info,
2783 input_section,
2784 rel->r_offset);
2785 if (outrel.r_offset == (bfd_vma) -1
2786 || outrel.r_offset == (bfd_vma) -2)
2787 abort ();
2788
2789 outrel.r_offset += (input_section->output_section->vma
2790 + input_section->output_offset);
2791
cf1070f1 2792 if (POINTER_LOCAL_IFUNC_P (info, h))
710ab287 2793 {
871b3ab2 2794 info->callbacks->minfo (_("Local IFUNC function `%s' in %pB\n"),
6322e5c5
L		 2795 h->root.root.string,
2796 h->root.u.def.section->owner);
2797
710ab287 2798 /* This symbol is resolved locally. */
56b8aada
L		 2799 outrel.r_info = htab->r_info (0, R_X86_64_IRELATIVE);
2800 outrel.r_addend = (h->root.u.def.value
2801 + h->root.u.def.section->output_section->vma
2802 + h->root.u.def.section->output_offset);
710ab287
L		 2803 }
2804 else
2805 {
351f65ca 2806 outrel.r_info = htab->r_info (h->dynindx, r_type);
710ab287
L		 2807 outrel.r_addend = 0;
2808 }
2809
233cc9c1
L		 2810 /* Dynamic relocations are stored in
2811 1. .rela.ifunc section in PIC object.
2812 2. .rela.got section in dynamic executable.
2813 3. .rela.iplt section in static executable. */
2814 if (bfd_link_pic (info))
2815 sreloc = htab->elf.irelifunc;
2816 else if (htab->elf.splt != NULL)
2817 sreloc = htab->elf.srelgot;
2818 else
2819 sreloc = htab->elf.irelplt;
351f65ca 2820 elf_append_rela (output_bfd, sreloc, &outrel);
710ab287
L		 2821
2822 /* If this reloc is against an external symbol, we
2823 do not want to fiddle with the addend. Otherwise,
2824 we need to include the symbol value so that it
2825 becomes an addend for the dynamic reloc. For an
2826 internal symbol, we have updated addend. */
56b8aada 2827 continue;
710ab287 2828 }
17672001 2829 /* FALLTHROUGH */
cbe950e9 2830 case R_X86_64_PC32:
c3320543 2831 case R_X86_64_PC32_BND:
cbe950e9
L		 2832 case R_X86_64_PC64:
2833 case R_X86_64_PLT32:
c3320543 2834 case R_X86_64_PLT32_BND:
cbe950e9 2835 goto do_relocation;
cbe950e9
L		 2836 }
2837 }
2838
347a8774 2839skip_ifunc:
aec6b87e 2840 resolved_to_zero = (eh != NULL
c5bce5c6 2841 && UNDEFINED_WEAK_RESOLVED_TO_ZERO (info, eh));
aec6b87e 2842
70256ad8
AJ		 2843 /* When generating a shared object, the relocations handled here are
2844 copied into the output file to be resolved at run time. */
2845 switch (r_type)
2846 {
2847 case R_X86_64_GOT32:
7b81dfbb 2848 case R_X86_64_GOT64:
70256ad8
AJ		 2849 /* Relocation is to the entry for this symbol in the global
2850 offset table. */
70256ad8 2851 case R_X86_64_GOTPCREL:
56ceb5b5
L		 2852 case R_X86_64_GOTPCRELX:
2853 case R_X86_64_REX_GOTPCRELX:
7b81dfbb
AJ		 2854 case R_X86_64_GOTPCREL64:
2855 /* Use global offset table entry as symbol value. */
2856 case R_X86_64_GOTPLT64:
de194d85 2857 /* This is obsolete and treated the same as GOT64. */
6de2ae4a 2858 base_got = htab->elf.sgot;
7b81dfbb 2859
6de2ae4a 2860 if (htab->elf.sgot == NULL)
c434dee6 2861 abort ();
053579d7 2862
9e9821dd 2863 relative_reloc = FALSE;
51e0a107 2864 if (h != NULL)
70256ad8 2865 {
c434dee6 2866 off = h->got.offset;
7b81dfbb 2867 if (h->needs_plt
eed180f8 2868 && h->plt.offset != (bfd_vma)-1
7b81dfbb
AJ		 2869 && off == (bfd_vma)-1)
2870 {
2871 /* We can't use h->got.offset here to save
2872 state, or even just remember the offset, as
2873 finish_dynamic_symbol would use that as offset into
2874 .got. */
38b12349 2875 bfd_vma plt_index = (h->plt.offset / plt_entry_size
765e526c 2876 - htab->plt.has_plt0);
7b81dfbb 2877 off = (plt_index + 3) * GOT_ENTRY_SIZE;
6de2ae4a 2878 base_got = htab->elf.sgotplt;
7b81dfbb
AJ		 2879 }
2880
2eba97c2 2881 if (RESOLVED_LOCALLY_P (info, h, htab))
51e0a107 2882 {
2eba97c2
L		 2883 /* We must initialize this entry in the global offset
2884 table. Since the offset must always be a multiple
2885 of 8, we use the least significant bit to record
2886 whether we have initialized it already.
51e0a107
JH		 2887
2888 When doing a dynamic link, we create a .rela.got
407443a3
AJ		 2889 relocation entry to initialize the value. This is
2890 done in the finish_dynamic_symbol routine. */
51e0a107
JH		 2891 if ((off & 1) != 0)
2892 off &= ~1;
2893 else
2894 {
2895 bfd_put_64 (output_bfd, relocation,
7b81dfbb
AJ		 2896 base_got->contents + off);
2897 /* Note that this is harmless for the GOTPLT64 case,
eed180f8 2898 as -1 | 1 still is -1. */
51e0a107 2899 h->got.offset |= 1;
9e9821dd 2900
f70656b2 2901 if (GENERATE_RELATIVE_RELOC_P (info, h))
9e9821dd
L		 2902 {
2903 /* If this symbol isn't dynamic in PIC,
2904 generate R_X86_64_RELATIVE here. */
2905 eh->no_finish_dynamic_symbol = 1;
2906 relative_reloc = TRUE;
2907 }
51e0a107
JH		 2908 }
2909 }
053579d7 2910 else
b34976b6 2911 unresolved_reloc = FALSE;
70256ad8 2912 }
51e0a107
JH		 2913 else
2914 {
c434dee6
AJ		 2915 if (local_got_offsets == NULL)
2916 abort ();
51e0a107
JH		 2917
2918 off = local_got_offsets[r_symndx];
2919
2920 /* The offset must always be a multiple of 8. We use
407443a3
AJ		 2921 the least significant bit to record whether we have
2922 already generated the necessary reloc. */
51e0a107
JH		 2923 if ((off & 1) != 0)
2924 off &= ~1;
2925 else
2926 {
c434dee6 2927 bfd_put_64 (output_bfd, relocation,
7b81dfbb 2928 base_got->contents + off);
9e9821dd 2929 local_got_offsets[r_symndx] |= 1;
51e0a107 2930
0e1862bb 2931 if (bfd_link_pic (info))
9e9821dd 2932 relative_reloc = TRUE;
51e0a107 2933 }
51e0a107 2934 }
6a2bda3f 2935
9e9821dd
L		 2936 if (relative_reloc)
2937 {
2938 asection *s;
2939 Elf_Internal_Rela outrel;
2940
2941 /* We need to generate a R_X86_64_RELATIVE reloc
2942 for the dynamic linker. */
2943 s = htab->elf.srelgot;
2944 if (s == NULL)
2945 abort ();
2946
2947 outrel.r_offset = (base_got->output_section->vma
2948 + base_got->output_offset
2949 + off);
2950 outrel.r_info = htab->r_info (0, R_X86_64_RELATIVE);
2951 outrel.r_addend = relocation;
2952 elf_append_rela (output_bfd, s, &outrel);
2953 }
2954
c434dee6
AJ		 2955 if (off >= (bfd_vma) -2)
2956 abort ();
2957
7b81dfbb
AJ		 2958 relocation = base_got->output_section->vma
2959 + base_got->output_offset + off;
56ceb5b5
L		 2960 if (r_type != R_X86_64_GOTPCREL
2961 && r_type != R_X86_64_GOTPCRELX
2962 && r_type != R_X86_64_REX_GOTPCRELX
2963 && r_type != R_X86_64_GOTPCREL64)
6de2ae4a
L		 2964 relocation -= htab->elf.sgotplt->output_section->vma
2965 - htab->elf.sgotplt->output_offset;
c434dee6 2966
70256ad8
AJ		 2967 break;
2968
d6ab8113
JB		 2969 case R_X86_64_GOTOFF64:
2970 /* Relocation is relative to the start of the global offset
2971 table. */
2972
3d949995
L		 2973 /* Check to make sure it isn't a protected function or data
2974 symbol for shared library since it may not be local when
e3c0e327
L		 2975 used as function address or with copy relocation. We also
2976 need to make sure that a symbol is referenced locally. */
0e1862bb 2977 if (bfd_link_pic (info) && h)
d6ab8113 2978 {
e3c0e327
L		 2979 if (!h->def_regular)
2980 {
2981 const char *v;
2982
2983 switch (ELF_ST_VISIBILITY (h->other))
2984 {
2985 case STV_HIDDEN:
2986 v = _("hidden symbol");
2987 break;
2988 case STV_INTERNAL:
2989 v = _("internal symbol");
2990 break;
2991 case STV_PROTECTED:
2992 v = _("protected symbol");
2993 break;
2994 default:
2995 v = _("symbol");
2996 break;
2997 }
2998
4eca0228 2999 _bfd_error_handler
695344c0 3000 /* xgettext:c-format */
871b3ab2 3001 (_("%pB: relocation R_X86_64_GOTOFF64 against undefined %s"
63a5468a 3002 " `%s' can not be used when making a shared object"),
e3c0e327
L		 3003 input_bfd, v, h->root.root.string);
3004 bfd_set_error (bfd_error_bad_value);
3005 return FALSE;
3006 }
0e1862bb 3007 else if (!bfd_link_executable (info)
6999821f 3008 && !SYMBOL_REFERENCES_LOCAL_P (info, h)
e3c0e327
L		 3009 && (h->type == STT_FUNC
3010 || h->type == STT_OBJECT)
3011 && ELF_ST_VISIBILITY (h->other) == STV_PROTECTED)
3012 {
4eca0228 3013 _bfd_error_handler
695344c0 3014 /* xgettext:c-format */
871b3ab2 3015 (_("%pB: relocation R_X86_64_GOTOFF64 against protected %s"
63a5468a 3016 " `%s' can not be used when making a shared object"),
e3c0e327
L		 3017 input_bfd,
3018 h->type == STT_FUNC ? "function" : "data",
3019 h->root.root.string);
3020 bfd_set_error (bfd_error_bad_value);
d6ab8113 3021 return FALSE;
e3c0e327 3022 }
d6ab8113
JB		 3023 }
3024
3025 /* Note that sgot is not involved in this
3026 calculation. We always want the start of .got.plt. If we
3027 defined _GLOBAL_OFFSET_TABLE_ in a different way, as is
3028 permitted by the ABI, we might have to change this
3029 calculation. */
6de2ae4a
L		 3030 relocation -= htab->elf.sgotplt->output_section->vma
3031 + htab->elf.sgotplt->output_offset;
d6ab8113
JB		 3032 break;
3033
3034 case R_X86_64_GOTPC32:
7b81dfbb 3035 case R_X86_64_GOTPC64:
d6ab8113 3036 /* Use global offset table as symbol value. */
6de2ae4a
L		 3037 relocation = htab->elf.sgotplt->output_section->vma
3038 + htab->elf.sgotplt->output_offset;
d6ab8113
JB		 3039 unresolved_reloc = FALSE;
3040 break;
7b81dfbb
AJ		 3041
3042 case R_X86_64_PLTOFF64:
3043 /* Relocation is PLT entry relative to GOT. For local
3044 symbols it's the symbol itself relative to GOT. */
eed180f8 3045 if (h != NULL
7b81dfbb 3046 /* See PLT32 handling. */
9d734efa
L		 3047 && (h->plt.offset != (bfd_vma) -1
3048 || eh->plt_got.offset != (bfd_vma) -1)
6de2ae4a 3049 && htab->elf.splt != NULL)
7b81dfbb 3050 {
9d734efa
L		 3051 if (eh->plt_got.offset != (bfd_vma) -1)
3052 {
3053 /* Use the GOT PLT. */
3054 resolved_plt = htab->plt_got;
3055 plt_offset = eh->plt_got.offset;
3056 }
f2c29a16 3057 else if (htab->plt_second != NULL)
0ff2b86e 3058 {
f2c29a16
L		 3059 resolved_plt = htab->plt_second;
3060 plt_offset = eh->plt_second.offset;
0ff2b86e
L		 3061 }
3062 else
3063 {
3064 resolved_plt = htab->elf.splt;
3065 plt_offset = h->plt.offset;
3066 }
3067
3068 relocation = (resolved_plt->output_section->vma
3069 + resolved_plt->output_offset
3070 + plt_offset);
7b81dfbb
AJ		 3071 unresolved_reloc = FALSE;
3072 }
3073
6de2ae4a
L		 3074 relocation -= htab->elf.sgotplt->output_section->vma
3075 + htab->elf.sgotplt->output_offset;
7b81dfbb 3076 break;
d6ab8113 3077
70256ad8 3078 case R_X86_64_PLT32:
c3320543 3079 case R_X86_64_PLT32_BND:
70256ad8
AJ		 3080 /* Relocation is to the entry for this symbol in the
3081 procedure linkage table. */
3082
3083 /* Resolve a PLT32 reloc against a local symbol directly,
407443a3 3084 without using the procedure linkage table. */
70256ad8
AJ		 3085 if (h == NULL)
3086 break;
3087
dd7e64d4
L		 3088 if ((h->plt.offset == (bfd_vma) -1
3089 && eh->plt_got.offset == (bfd_vma) -1)
6de2ae4a 3090 || htab->elf.splt == NULL)
70256ad8
AJ		 3091 {
3092 /* We didn't make a PLT entry for this symbol. This
407443a3
AJ		 3093 happens when statically linking PIC code, or when
3094 using -Bsymbolic. */
70256ad8
AJ		 3095 break;
3096 }
3097
451875b4 3098use_plt:
dd7e64d4 3099 if (h->plt.offset != (bfd_vma) -1)
0ff2b86e 3100 {
f2c29a16 3101 if (htab->plt_second != NULL)
dd7e64d4 3102 {
f2c29a16
L		 3103 resolved_plt = htab->plt_second;
3104 plt_offset = eh->plt_second.offset;
dd7e64d4
L		 3105 }
3106 else
3107 {
3108 resolved_plt = htab->elf.splt;
3109 plt_offset = h->plt.offset;
3110 }
0ff2b86e
L		 3111 }
3112 else
3113 {
dd7e64d4
L		 3114 /* Use the GOT PLT. */
3115 resolved_plt = htab->plt_got;
3116 plt_offset = eh->plt_got.offset;
0ff2b86e
L		 3117 }
3118
3119 relocation = (resolved_plt->output_section->vma
3120 + resolved_plt->output_offset
3121 + plt_offset);
b34976b6 3122 unresolved_reloc = FALSE;
70256ad8
AJ		 3123 break;
3124
1788fc08
L		 3125 case R_X86_64_SIZE32:
3126 case R_X86_64_SIZE64:
1788fc08
L		 3127 /* Set to symbol size. */
3128 relocation = st_size;
3129 goto direct;
3130
fd8ab9e5
AJ		 3131 case R_X86_64_PC8:
3132 case R_X86_64_PC16:
3133 case R_X86_64_PC32:
c3320543 3134 case R_X86_64_PC32_BND:
451875b4
L		 3135 /* Since x86-64 has PC-relative PLT, we can use PLT in PIE
3136 as function address. */
83924b38
L		 3137 if (h != NULL
3138 && (input_section->flags & SEC_CODE) == 0
3139 && bfd_link_pie (info)
3140 && h->type == STT_FUNC
3141 && !h->def_regular
3142 && h->def_dynamic)
451875b4 3143 goto use_plt;
6610a52d
L		 3144 /* Fall through. */
3145
70256ad8
AJ		 3146 case R_X86_64_8:
3147 case R_X86_64_16:
3148 case R_X86_64_32:
d6ab8113 3149 case R_X86_64_PC64:
6b3db546 3150 case R_X86_64_64:
80643fbc 3151 /* FIXME: The ABI says the linker should make sure the value is
407443a3 3152 the same when it's zeroextended to 64 bit. */
c434dee6 3153
1788fc08 3154direct:
b1e24c02 3155 if ((input_section->flags & SEC_ALLOC) == 0)
c434dee6
AJ		 3156 break;
3157
aebcc8ff
L		 3158 need_copy_reloc_in_pie = (bfd_link_pie (info)
3159 && h != NULL
3160 && (h->needs_copy
3161 || eh->needs_copy
3162 || (h->root.type
3163 == bfd_link_hash_undefined))
3164 && (X86_PCREL_TYPE_P (r_type)
3165 || X86_SIZE_TYPE_P (r_type)));
3166
3167 if (GENERATE_DYNAMIC_RELOCATION_P (info, eh, r_type,
3168 need_copy_reloc_in_pie,
3169 resolved_to_zero, FALSE))
70256ad8
AJ		 3170 {
3171 Elf_Internal_Rela outrel;
b34976b6 3172 bfd_boolean skip, relocate;
c434dee6 3173 asection *sreloc;
70256ad8
AJ		 3174
3175 /* When generating a shared object, these relocations
3176 are copied into the output file to be resolved at run
407443a3 3177 time. */
b34976b6
AM		 3178 skip = FALSE;
3179 relocate = FALSE;
70256ad8 3180
c629eae0
JJ		 3181 outrel.r_offset =
3182 _bfd_elf_section_offset (output_bfd, info, input_section,
c434dee6 3183 rel->r_offset);
c629eae0 3184 if (outrel.r_offset == (bfd_vma) -1)
b34976b6 3185 skip = TRUE;
0fb19cbc 3186 else if (outrel.r_offset == (bfd_vma) -2)
b34976b6 3187 skip = TRUE, relocate = TRUE;
70256ad8
AJ		 3188
3189 outrel.r_offset += (input_section->output_section->vma
3190 + input_section->output_offset);
3191
3192 if (skip)
0bb2d96a 3193 memset (&outrel, 0, sizeof outrel);
c434dee6 3194
e74399c4 3195 else if (COPY_INPUT_RELOC_P (info, h, r_type))
70256ad8 3196 {
351f65ca 3197 outrel.r_info = htab->r_info (h->dynindx, r_type);
c434dee6 3198 outrel.r_addend = rel->r_addend;
70256ad8
AJ		 3199 }
3200 else
3201 {
4c10bbaa
L		 3202 /* This symbol is local, or marked to become local.
3203 When relocation overflow check is disabled, we
3204 convert R_X86_64_32 to dynamic R_X86_64_RELATIVE. */
3205 if (r_type == htab->pointer_r_type
3206 || (r_type == R_X86_64_32
3207 && info->no_reloc_overflow_check))
607c0e09 3208 {
b34976b6 3209 relocate = TRUE;
351f65ca 3210 outrel.r_info = htab->r_info (0, R_X86_64_RELATIVE);
607c0e09
AS		 3211 outrel.r_addend = relocation + rel->r_addend;
3212 }
64d25c44
L		 3213 else if (r_type == R_X86_64_64
3214 && !ABI_64_P (output_bfd))
3215 {
3216 relocate = TRUE;
3217 outrel.r_info = htab->r_info (0,
3218 R_X86_64_RELATIVE64);
3219 outrel.r_addend = relocation + rel->r_addend;
8cf0d2dd
L		 3220 /* Check addend overflow. */
3221 if ((outrel.r_addend & 0x80000000)
3222 != (rel->r_addend & 0x80000000))
3223 {
3224 const char *name;
268a8d3a 3225 int addend = rel->r_addend;
8cf0d2dd
L		 3226 if (h && h->root.root.string)
3227 name = h->root.root.string;
3228 else
3229 name = bfd_elf_sym_name (input_bfd, symtab_hdr,
3230 sym, NULL);
d42c267e
AM		 3231 _bfd_error_handler
3232 /* xgettext:c-format */
871b3ab2 3233 (_("%pB: addend %s%#x in relocation %s against "
2dcf00ce
AM		 3234 "symbol `%s' at %#" PRIx64
3235 " in section `%pA' is out of range"),
d42c267e 3236 input_bfd, addend < 0 ? "-" : "", addend,
2dcf00ce
AM		 3237 howto->name, name, (uint64_t) rel->r_offset,
3238 input_section);
8cf0d2dd
L		 3239 bfd_set_error (bfd_error_bad_value);
3240 return FALSE;
3241 }
64d25c44 3242 }
607c0e09
AS		 3243 else
3244 {
3245 long sindx;
3246
8517fae7 3247 if (bfd_is_abs_section (sec))
607c0e09
AS		 3248 sindx = 0;
3249 else if (sec == NULL || sec->owner == NULL)
3250 {
3251 bfd_set_error (bfd_error_bad_value);
b34976b6 3252 return FALSE;
607c0e09
AS		 3253 }
3254 else
3255 {
3256 asection *osec;
3257
74541ad4
AM		 3258 /* We are turning this relocation into one
3259 against a section symbol. It would be
3260 proper to subtract the symbol's value,
3261 osec->vma, from the emitted reloc addend,
3262 but ld.so expects buggy relocs. */
607c0e09
AS		 3263 osec = sec->output_section;
3264 sindx = elf_section_data (osec)->dynindx;
74541ad4
AM		 3265 if (sindx == 0)
3266 {
3267 asection *oi = htab->elf.text_index_section;
3268 sindx = elf_section_data (oi)->dynindx;
3269 }
3270 BFD_ASSERT (sindx != 0);
607c0e09
AS		 3271 }
3272
351f65ca 3273 outrel.r_info = htab->r_info (sindx, r_type);
607c0e09
AS		 3274 outrel.r_addend = relocation + rel->r_addend;
3275 }
70256ad8
AJ		 3276 }
3277
cbe950e9 3278 sreloc = elf_section_data (input_section)->sreloc;
d8045f23 3279
62d78908
L		 3280 if (sreloc == NULL || sreloc->contents == NULL)
3281 {
3282 r = bfd_reloc_notsupported;
3283 goto check_relocation_error;
3284 }
c434dee6 3285
351f65ca 3286 elf_append_rela (output_bfd, sreloc, &outrel);
70256ad8
AJ		 3287
3288 /* If this reloc is against an external symbol, we do
3289 not want to fiddle with the addend. Otherwise, we
3290 need to include the symbol value so that it becomes
3291 an addend for the dynamic reloc. */
0f88be7a 3292 if (! relocate)
70256ad8
AJ		 3293 continue;
3294 }
3295
3296 break;
3297
bffbf940 3298 case R_X86_64_TLSGD:
67a4f2b7
AO		 3299 case R_X86_64_GOTPC32_TLSDESC:
3300 case R_X86_64_TLSDESC_CALL:
bffbf940 3301 case R_X86_64_GOTTPOFF:
bffbf940
JJ		 3302 tls_type = GOT_UNKNOWN;
3303 if (h == NULL && local_got_offsets)
0afcef53 3304 tls_type = elf_x86_local_got_tls_type (input_bfd) [r_symndx];
bffbf940 3305 else if (h != NULL)
0afcef53 3306 tls_type = elf_x86_hash_entry (h)->tls_type;
142411ca 3307
419414ea 3308 r_type_tls = r_type;
351f65ca
L		 3309 if (! elf_x86_64_tls_transition (info, input_bfd,
3310 input_section, contents,
3311 symtab_hdr, sym_hashes,
419414ea 3312 &r_type_tls, tls_type, rel,
bedfd056 3313 relend, h, r_symndx, TRUE))
534a31f6 3314 return FALSE;
bffbf940 3315
419414ea 3316 if (r_type_tls == R_X86_64_TPOFF32)
bffbf940 3317 {
142411ca
L		 3318 bfd_vma roff = rel->r_offset;
3319
bffbf940 3320 BFD_ASSERT (! unresolved_reloc);
142411ca 3321
419414ea 3322 if (r_type == R_X86_64_TLSGD)
bffbf940 3323 {
52bc799a 3324 /* GD->LE transition. For 64bit, change
e2cbcd91
L		 3325 .byte 0x66; leaq foo@tlsgd(%rip), %rdi
3326 .word 0x6666; rex64; call __tls_get_addr@PLT
3327 or
3328 .byte 0x66; leaq foo@tlsgd(%rip), %rdi
3329 .byte 0x66; rex64
3330 call *__tls_get_addr@GOTPCREL(%rip)
3331 which may be converted to
3332 addr32 call __tls_get_addr
52bc799a 3333 into:
e2cbcd91
L		 3334 movq %fs:0, %rax
3335 leaq foo@tpoff(%rax), %rax
52bc799a 3336 For 32bit, change
e2cbcd91
L		 3337 leaq foo@tlsgd(%rip), %rdi
3338 .word 0x6666; rex64; call __tls_get_addr@PLT
3339 or
3340 leaq foo@tlsgd(%rip), %rdi
3341 .byte 0x66; rex64
3342 call *__tls_get_addr@GOTPCREL(%rip)
3343 which may be converted to
3344 addr32 call __tls_get_addr
52bc799a 3345 into:
e2cbcd91
L		 3346 movl %fs:0, %eax
3347 leaq foo@tpoff(%rax), %rax
5c98a14e 3348 For largepic, change:
e2cbcd91
L		 3349 leaq foo@tlsgd(%rip), %rdi
3350 movabsq $__tls_get_addr@pltoff, %rax
3351 addq %r15, %rax
3352 call *%rax
5c98a14e 3353 into:
e2cbcd91
L		 3354 movq %fs:0, %rax
3355 leaq foo@tpoff(%rax), %rax
3356 nopw 0x0(%rax,%rax,1) */
5c98a14e 3357 int largepic = 0;
e2cbcd91 3358 if (ABI_64_P (output_bfd))
5c98a14e 3359 {
e2cbcd91
L		 3360 if (contents[roff + 5] == 0xb8)
3361 {
3362 memcpy (contents + roff - 3,
3363 "\x64\x48\x8b\x04\x25\0\0\0\0\x48\x8d\x80"
3364 "\0\0\0\0\x66\x0f\x1f\x44\0", 22);
3365 largepic = 1;
3366 }
3367 else
3368 memcpy (contents + roff - 4,
3369 "\x64\x48\x8b\x04\x25\0\0\0\0\x48\x8d\x80\0\0\0",
3370 16);
5c98a14e 3371 }
52bc799a
L		 3372 else
3373 memcpy (contents + roff - 3,
3374 "\x64\x8b\x04\x25\0\0\0\0\x48\x8d\x80\0\0\0",
3375 15);
eb4ff4d6 3376 bfd_put_32 (output_bfd,
351f65ca 3377 elf_x86_64_tpoff (info, relocation),
5c98a14e 3378 contents + roff + 8 + largepic);
e2cbcd91
L		 3379 /* Skip R_X86_64_PC32, R_X86_64_PLT32,
3380 R_X86_64_GOTPCRELX and R_X86_64_PLTOFF64. */
bffbf940 3381 rel++;
60f2e42e 3382 wrel++;
bffbf940
JJ		 3383 continue;
3384 }
419414ea 3385 else if (r_type == R_X86_64_GOTPC32_TLSDESC)
67a4f2b7
AO		 3386 {
3387 /* GDesc -> LE transition.
3388 It's originally something like:
3389 leaq x@tlsdesc(%rip), %rax
3390
3391 Change it to:
c9736ba0 3392 movl $x@tpoff, %rax. */
67a4f2b7 3393
c9736ba0 3394 unsigned int val, type;
67a4f2b7 3395
67a4f2b7 3396 type = bfd_get_8 (input_bfd, contents + roff - 3);
67a4f2b7 3397 val = bfd_get_8 (input_bfd, contents + roff - 1);
67a4f2b7
AO		 3398 bfd_put_8 (output_bfd, 0x48 | ((type >> 2) & 1),
3399 contents + roff - 3);
3400 bfd_put_8 (output_bfd, 0xc7, contents + roff - 2);
3401 bfd_put_8 (output_bfd, 0xc0 | ((val >> 3) & 7),
3402 contents + roff - 1);
eb4ff4d6 3403 bfd_put_32 (output_bfd,
351f65ca 3404 elf_x86_64_tpoff (info, relocation),
67a4f2b7
AO		 3405 contents + roff);
3406 continue;
3407 }
419414ea 3408 else if (r_type == R_X86_64_TLSDESC_CALL)
67a4f2b7
AO		 3409 {
3410 /* GDesc -> LE transition.
3411 It's originally:
3412 call *(%rax)
3413 Turn it into:
142411ca 3414 xchg %ax,%ax. */
10efb593 3415 bfd_put_8 (output_bfd, 0x66, contents + roff);
67a4f2b7
AO		 3416 bfd_put_8 (output_bfd, 0x90, contents + roff + 1);
3417 continue;
3418 }
419414ea 3419 else if (r_type == R_X86_64_GOTTPOFF)
bffbf940 3420 {
bffbf940 3421 /* IE->LE transition:
cf61b747 3422 For 64bit, originally it can be one of:
bffbf940
JJ		 3423 movq foo@gottpoff(%rip), %reg
3424 addq foo@gottpoff(%rip), %reg
3425 We change it into:
3426 movq $foo, %reg
3427 leaq foo(%reg), %reg
cf61b747
L		 3428 addq $foo, %reg.
3429 For 32bit, originally it can be one of:
3430 movq foo@gottpoff(%rip), %reg
3431 addl foo@gottpoff(%rip), %reg
3432 We change it into:
3433 movq $foo, %reg
3434 leal foo(%reg), %reg
3435 addl $foo, %reg. */
142411ca
L		 3436
3437 unsigned int val, type, reg;
3438
cf61b747
L		 3439 if (roff >= 3)
3440 val = bfd_get_8 (input_bfd, contents + roff - 3);
3441 else
3442 val = 0;
142411ca
L		 3443 type = bfd_get_8 (input_bfd, contents + roff - 2);
3444 reg = bfd_get_8 (input_bfd, contents + roff - 1);
bffbf940 3445 reg >>= 3;
bffbf940
JJ		 3446 if (type == 0x8b)
3447 {
3448 /* movq */
3449 if (val == 0x4c)
3450 bfd_put_8 (output_bfd, 0x49,
142411ca 3451 contents + roff - 3);
4a4c5f25
L		 3452 else if (!ABI_64_P (output_bfd) && val == 0x44)
3453 bfd_put_8 (output_bfd, 0x41,
3454 contents + roff - 3);
bffbf940 3455 bfd_put_8 (output_bfd, 0xc7,
142411ca 3456 contents + roff - 2);
bffbf940 3457 bfd_put_8 (output_bfd, 0xc0 | reg,
142411ca 3458 contents + roff - 1);
bffbf940
JJ		 3459 }
3460 else if (reg == 4)
3461 {
cf61b747
L		 3462 /* addq/addl -> addq/addl - addressing with %rsp/%r12
3463 is special */
bffbf940
JJ		 3464 if (val == 0x4c)
3465 bfd_put_8 (output_bfd, 0x49,
142411ca 3466 contents + roff - 3);
4a4c5f25
L		 3467 else if (!ABI_64_P (output_bfd) && val == 0x44)
3468 bfd_put_8 (output_bfd, 0x41,
3469 contents + roff - 3);
bffbf940 3470 bfd_put_8 (output_bfd, 0x81,
142411ca 3471 contents + roff - 2);
bffbf940 3472 bfd_put_8 (output_bfd, 0xc0 | reg,
142411ca 3473 contents + roff - 1);
bffbf940
JJ		 3474 }
3475 else
3476 {
cf61b747 3477 /* addq/addl -> leaq/leal */
bffbf940
JJ		 3478 if (val == 0x4c)
3479 bfd_put_8 (output_bfd, 0x4d,
142411ca 3480 contents + roff - 3);
4a4c5f25
L		 3481 else if (!ABI_64_P (output_bfd) && val == 0x44)
3482 bfd_put_8 (output_bfd, 0x45,
3483 contents + roff - 3);
bffbf940 3484 bfd_put_8 (output_bfd, 0x8d,
142411ca 3485 contents + roff - 2);
bffbf940 3486 bfd_put_8 (output_bfd, 0x80 | reg | (reg << 3),
142411ca 3487 contents + roff - 1);
bffbf940 3488 }
eb4ff4d6 3489 bfd_put_32 (output_bfd,
351f65ca 3490 elf_x86_64_tpoff (info, relocation),
142411ca 3491 contents + roff);
bffbf940
JJ		 3492 continue;
3493 }
142411ca
L		 3494 else
3495 BFD_ASSERT (FALSE);
bffbf940
JJ		 3496 }
3497
6de2ae4a 3498 if (htab->elf.sgot == NULL)
bffbf940
JJ		 3499 abort ();
3500
3501 if (h != NULL)
67a4f2b7
AO		 3502 {
3503 off = h->got.offset;
0afcef53 3504 offplt = elf_x86_hash_entry (h)->tlsdesc_got;
67a4f2b7 3505 }
bffbf940
JJ		 3506 else
3507 {
3508 if (local_got_offsets == NULL)
3509 abort ();
3510
3511 off = local_got_offsets[r_symndx];
67a4f2b7 3512 offplt = local_tlsdesc_gotents[r_symndx];
bffbf940
JJ		 3513 }
3514
3515 if ((off & 1) != 0)
3516 off &= ~1;
26e41594 3517 else
bffbf940
JJ		 3518 {
3519 Elf_Internal_Rela outrel;
bffbf940 3520 int dr_type, indx;
67a4f2b7 3521 asection *sreloc;
bffbf940 3522
6de2ae4a 3523 if (htab->elf.srelgot == NULL)
bffbf940
JJ		 3524 abort ();
3525
67a4f2b7
AO		 3526 indx = h && h->dynindx != -1 ? h->dynindx : 0;
3527
3528 if (GOT_TLS_GDESC_P (tls_type))
3529 {
351f65ca 3530 outrel.r_info = htab->r_info (indx, R_X86_64_TLSDESC);
67a4f2b7 3531 BFD_ASSERT (htab->sgotplt_jump_table_size + offplt
6de2ae4a
L		 3532 + 2 * GOT_ENTRY_SIZE <= htab->elf.sgotplt->size);
3533 outrel.r_offset = (htab->elf.sgotplt->output_section->vma
3534 + htab->elf.sgotplt->output_offset
67a4f2b7
AO		 3535 + offplt
3536 + htab->sgotplt_jump_table_size);
6de2ae4a 3537 sreloc = htab->elf.srelplt;
67a4f2b7 3538 if (indx == 0)
0afcef53 3539 outrel.r_addend = relocation - _bfd_x86_elf_dtpoff_base (info);
67a4f2b7
AO		 3540 else
3541 outrel.r_addend = 0;
351f65ca 3542 elf_append_rela (output_bfd, sreloc, &outrel);
67a4f2b7
AO		 3543 }
3544
6de2ae4a 3545 sreloc = htab->elf.srelgot;
67a4f2b7 3546
6de2ae4a
L		 3547 outrel.r_offset = (htab->elf.sgot->output_section->vma
3548 + htab->elf.sgot->output_offset + off);
bffbf940 3549
67a4f2b7 3550 if (GOT_TLS_GD_P (tls_type))
bffbf940 3551 dr_type = R_X86_64_DTPMOD64;
67a4f2b7
AO		 3552 else if (GOT_TLS_GDESC_P (tls_type))
3553 goto dr_done;
bffbf940
JJ		 3554 else
3555 dr_type = R_X86_64_TPOFF64;
3556
6de2ae4a 3557 bfd_put_64 (output_bfd, 0, htab->elf.sgot->contents + off);
bffbf940 3558 outrel.r_addend = 0;
67a4f2b7
AO		 3559 if ((dr_type == R_X86_64_TPOFF64
3560 || dr_type == R_X86_64_TLSDESC) && indx == 0)
0afcef53 3561 outrel.r_addend = relocation - _bfd_x86_elf_dtpoff_base (info);
351f65ca 3562 outrel.r_info = htab->r_info (indx, dr_type);
bffbf940 3563
351f65ca 3564 elf_append_rela (output_bfd, sreloc, &outrel);
bffbf940 3565
67a4f2b7 3566 if (GOT_TLS_GD_P (tls_type))
bffbf940
JJ		 3567 {
3568 if (indx == 0)
3569 {
d40d037c 3570 BFD_ASSERT (! unresolved_reloc);
bffbf940 3571 bfd_put_64 (output_bfd,
0afcef53 3572 relocation - _bfd_x86_elf_dtpoff_base (info),
6de2ae4a 3573 htab->elf.sgot->contents + off + GOT_ENTRY_SIZE);
bffbf940
JJ		 3574 }
3575 else
3576 {
3577 bfd_put_64 (output_bfd, 0,
6de2ae4a 3578 htab->elf.sgot->contents + off + GOT_ENTRY_SIZE);
351f65ca 3579 outrel.r_info = htab->r_info (indx,
bffbf940
JJ		 3580 R_X86_64_DTPOFF64);
3581 outrel.r_offset += GOT_ENTRY_SIZE;
351f65ca 3582 elf_append_rela (output_bfd, sreloc,
464d3bd4 3583 &outrel);
bffbf940
JJ		 3584 }
3585 }
3586
67a4f2b7 3587 dr_done:
bffbf940
JJ		 3588 if (h != NULL)
3589 h->got.offset |= 1;
3590 else
3591 local_got_offsets[r_symndx] |= 1;
3592 }
3593
67a4f2b7
AO		 3594 if (off >= (bfd_vma) -2
3595 && ! GOT_TLS_GDESC_P (tls_type))
bffbf940 3596 abort ();
419414ea 3597 if (r_type_tls == r_type)
bffbf940 3598 {
67a4f2b7
AO		 3599 if (r_type == R_X86_64_GOTPC32_TLSDESC
3600 || r_type == R_X86_64_TLSDESC_CALL)
6de2ae4a
L		 3601 relocation = htab->elf.sgotplt->output_section->vma
3602 + htab->elf.sgotplt->output_offset
67a4f2b7
AO		 3603 + offplt + htab->sgotplt_jump_table_size;
3604 else
6de2ae4a
L		 3605 relocation = htab->elf.sgot->output_section->vma
3606 + htab->elf.sgot->output_offset + off;
b34976b6 3607 unresolved_reloc = FALSE;
bffbf940 3608 }
142411ca 3609 else
67a4f2b7 3610 {
142411ca 3611 bfd_vma roff = rel->r_offset;
67a4f2b7 3612
419414ea 3613 if (r_type == R_X86_64_TLSGD)
142411ca 3614 {
52bc799a 3615 /* GD->IE transition. For 64bit, change
e2cbcd91
L		 3616 .byte 0x66; leaq foo@tlsgd(%rip), %rdi
3617 .word 0x6666; rex64; call __tls_get_addr@PLT
3618 or
3619 .byte 0x66; leaq foo@tlsgd(%rip), %rdi
3620 .byte 0x66; rex64
3621 call *__tls_get_addr@GOTPCREL(%rip
3622 which may be converted to
3623 addr32 call __tls_get_addr
52bc799a 3624 into:
e2cbcd91
L		 3625 movq %fs:0, %rax
3626 addq foo@gottpoff(%rip), %rax
52bc799a 3627 For 32bit, change
e2cbcd91
L		 3628 leaq foo@tlsgd(%rip), %rdi
3629 .word 0x6666; rex64; call __tls_get_addr@PLT
3630 or
3631 leaq foo@tlsgd(%rip), %rdi
3632 .byte 0x66; rex64;
3633 call *__tls_get_addr@GOTPCREL(%rip)
3634 which may be converted to
3635 addr32 call __tls_get_addr
52bc799a 3636 into:
e2cbcd91
L		 3637 movl %fs:0, %eax
3638 addq foo@gottpoff(%rip), %rax
5c98a14e 3639 For largepic, change:
e2cbcd91
L		 3640 leaq foo@tlsgd(%rip), %rdi
3641 movabsq $__tls_get_addr@pltoff, %rax
3642 addq %r15, %rax
3643 call *%rax
5c98a14e 3644 into:
e2cbcd91
L		 3645 movq %fs:0, %rax
3646 addq foo@gottpoff(%rax), %rax
3647 nopw 0x0(%rax,%rax,1) */
5c98a14e 3648 int largepic = 0;
e2cbcd91 3649 if (ABI_64_P (output_bfd))
5c98a14e 3650 {
e2cbcd91
L		 3651 if (contents[roff + 5] == 0xb8)
3652 {
3653 memcpy (contents + roff - 3,
3654 "\x64\x48\x8b\x04\x25\0\0\0\0\x48\x03\x05"
3655 "\0\0\0\0\x66\x0f\x1f\x44\0", 22);
3656 largepic = 1;
3657 }
3658 else
3659 memcpy (contents + roff - 4,
3660 "\x64\x48\x8b\x04\x25\0\0\0\0\x48\x03\x05\0\0\0",
3661 16);
5c98a14e 3662 }
52bc799a
L		 3663 else
3664 memcpy (contents + roff - 3,
3665 "\x64\x8b\x04\x25\0\0\0\0\x48\x03\x05\0\0\0",
3666 15);
142411ca 3667
6de2ae4a
L		 3668 relocation = (htab->elf.sgot->output_section->vma
3669 + htab->elf.sgot->output_offset + off
142411ca 3670 - roff
5c98a14e 3671 - largepic
142411ca
L		 3672 - input_section->output_section->vma
3673 - input_section->output_offset
3674 - 12);
3675 bfd_put_32 (output_bfd, relocation,
5c98a14e
JJ		 3676 contents + roff + 8 + largepic);
3677 /* Skip R_X86_64_PLT32/R_X86_64_PLTOFF64. */
142411ca 3678 rel++;
60f2e42e 3679 wrel++;
142411ca
L		 3680 continue;
3681 }
419414ea 3682 else if (r_type == R_X86_64_GOTPC32_TLSDESC)
142411ca
L		 3683 {
3684 /* GDesc -> IE transition.
3685 It's originally something like:
3686 leaq x@tlsdesc(%rip), %rax
67a4f2b7 3687
142411ca 3688 Change it to:
c9736ba0 3689 movq x@gottpoff(%rip), %rax # before xchg %ax,%ax. */
67a4f2b7 3690
142411ca
L		 3691 /* Now modify the instruction as appropriate. To
3692 turn a leaq into a movq in the form we use it, it
3693 suffices to change the second byte from 0x8d to
3694 0x8b. */
3695 bfd_put_8 (output_bfd, 0x8b, contents + roff - 2);
3696
3697 bfd_put_32 (output_bfd,
6de2ae4a
L		 3698 htab->elf.sgot->output_section->vma
3699 + htab->elf.sgot->output_offset + off
142411ca
L		 3700 - rel->r_offset
3701 - input_section->output_section->vma
3702 - input_section->output_offset
3703 - 4,
3704 contents + roff);
3705 continue;
3706 }
419414ea 3707 else if (r_type == R_X86_64_TLSDESC_CALL)
142411ca
L		 3708 {
3709 /* GDesc -> IE transition.
3710 It's originally:
3711 call *(%rax)
3712
3713 Change it to:
c9736ba0 3714 xchg %ax, %ax. */
142411ca 3715
142411ca
L		 3716 bfd_put_8 (output_bfd, 0x66, contents + roff);
3717 bfd_put_8 (output_bfd, 0x90, contents + roff + 1);
3718 continue;
3719 }
3720 else
3721 BFD_ASSERT (FALSE);
67a4f2b7 3722 }
bffbf940
JJ		 3723 break;
3724
3725 case R_X86_64_TLSLD:
351f65ca
L		 3726 if (! elf_x86_64_tls_transition (info, input_bfd,
3727 input_section, contents,
3728 symtab_hdr, sym_hashes,
bedfd056
L		 3729 &r_type, GOT_UNKNOWN, rel,
3730 relend, h, r_symndx, TRUE))
142411ca 3731 return FALSE;
a3fadc9a 3732
142411ca
L		 3733 if (r_type != R_X86_64_TLSLD)
3734 {
bffbf940 3735 /* LD->LE transition:
e2cbcd91
L		 3736 leaq foo@tlsld(%rip), %rdi
3737 call __tls_get_addr@PLT
3738 For 64bit, we change it into:
3739 .word 0x6666; .byte 0x66; movq %fs:0, %rax
3740 For 32bit, we change it into:
3741 nopl 0x0(%rax); movl %fs:0, %eax
3742 Or
3743 leaq foo@tlsld(%rip), %rdi;
3744 call *__tls_get_addr@GOTPCREL(%rip)
3745 which may be converted to
3746 addr32 call __tls_get_addr
52bc799a 3747 For 64bit, we change it into:
e2cbcd91 3748 .word 0x6666; .word 0x6666; movq %fs:0, %rax
52bc799a 3749 For 32bit, we change it into:
e2cbcd91 3750 nopw 0x0(%rax); movl %fs:0, %eax
5c98a14e 3751 For largepic, change:
e2cbcd91
L		 3752 leaq foo@tlsgd(%rip), %rdi
3753 movabsq $__tls_get_addr@pltoff, %rax
3754 addq %rbx, %rax
3755 call *%rax
3756 into
3757 data16 data16 data16 nopw %cs:0x0(%rax,%rax,1)
3758 movq %fs:0, %eax */
142411ca
L		 3759
3760 BFD_ASSERT (r_type == R_X86_64_TPOFF32);
e2cbcd91
L		 3761 if (ABI_64_P (output_bfd))
3762 {
3763 if (contents[rel->r_offset + 5] == 0xb8)
3764 memcpy (contents + rel->r_offset - 3,
3765 "\x66\x66\x66\x66\x2e\x0f\x1f\x84\0\0\0\0\0"
3766 "\x64\x48\x8b\x04\x25\0\0\0", 22);
3767 else if (contents[rel->r_offset + 4] == 0xff
3768 || contents[rel->r_offset + 4] == 0x67)
3769 memcpy (contents + rel->r_offset - 3,
3770 "\x66\x66\x66\x66\x64\x48\x8b\x04\x25\0\0\0",
3771 13);
3772 else
3773 memcpy (contents + rel->r_offset - 3,
3774 "\x66\x66\x66\x64\x48\x8b\x04\x25\0\0\0", 12);
3775 }
52bc799a 3776 else
e2cbcd91
L		 3777 {
3778 if (contents[rel->r_offset + 4] == 0xff)
3779 memcpy (contents + rel->r_offset - 3,
3780 "\x66\x0f\x1f\x40\x00\x64\x8b\x04\x25\0\0\0",
3781 13);
3782 else
3783 memcpy (contents + rel->r_offset - 3,
3784 "\x0f\x1f\x40\x00\x64\x8b\x04\x25\0\0\0", 12);
3785 }
3786 /* Skip R_X86_64_PC32, R_X86_64_PLT32, R_X86_64_GOTPCRELX
3787 and R_X86_64_PLTOFF64. */
bffbf940 3788 rel++;
60f2e42e 3789 wrel++;
bffbf940
JJ		 3790 continue;
3791 }
3792
6de2ae4a 3793 if (htab->elf.sgot == NULL)
bffbf940
JJ		 3794 abort ();
3795
0afcef53 3796 off = htab->tls_ld_or_ldm_got.offset;
bffbf940
JJ		 3797 if (off & 1)
3798 off &= ~1;
3799 else
3800 {
3801 Elf_Internal_Rela outrel;
bffbf940 3802
6de2ae4a 3803 if (htab->elf.srelgot == NULL)
bffbf940
JJ		 3804 abort ();
3805
6de2ae4a
L		 3806 outrel.r_offset = (htab->elf.sgot->output_section->vma
3807 + htab->elf.sgot->output_offset + off);
bffbf940
JJ		 3808
3809 bfd_put_64 (output_bfd, 0,
6de2ae4a 3810 htab->elf.sgot->contents + off);
bffbf940 3811 bfd_put_64 (output_bfd, 0,
6de2ae4a 3812 htab->elf.sgot->contents + off + GOT_ENTRY_SIZE);
351f65ca 3813 outrel.r_info = htab->r_info (0, R_X86_64_DTPMOD64);
bffbf940 3814 outrel.r_addend = 0;
351f65ca 3815 elf_append_rela (output_bfd, htab->elf.srelgot,
464d3bd4 3816 &outrel);
0afcef53 3817 htab->tls_ld_or_ldm_got.offset |= 1;
bffbf940 3818 }
6de2ae4a
L		 3819 relocation = htab->elf.sgot->output_section->vma
3820 + htab->elf.sgot->output_offset + off;
b34976b6 3821 unresolved_reloc = FALSE;
bffbf940
JJ		 3822 break;
3823
3824 case R_X86_64_DTPOFF32:
0e1862bb
L		 3825 if (!bfd_link_executable (info)
3826 || (input_section->flags & SEC_CODE) == 0)
0afcef53 3827 relocation -= _bfd_x86_elf_dtpoff_base (info);
bffbf940 3828 else
351f65ca 3829 relocation = elf_x86_64_tpoff (info, relocation);
bffbf940
JJ		 3830 break;
3831
3832 case R_X86_64_TPOFF32:
6769d501 3833 case R_X86_64_TPOFF64:
0e1862bb 3834 BFD_ASSERT (bfd_link_executable (info));
351f65ca 3835 relocation = elf_x86_64_tpoff (info, relocation);
bffbf940
JJ		 3836 break;
3837
a69ed7f7
L		 3838 case R_X86_64_DTPOFF64:
3839 BFD_ASSERT ((input_section->flags & SEC_CODE) == 0);
0afcef53 3840 relocation -= _bfd_x86_elf_dtpoff_base (info);
a69ed7f7
L		 3841 break;
3842
70256ad8
AJ		 3843 default:
3844 break;
3845 }
8d88c4ca 3846
239e1f3a
AM		 3847 /* Dynamic relocs are not propagated for SEC_DEBUGGING sections
3848 because such sections are not SEC_ALLOC and thus ld.so will
3849 not process them. */
c434dee6 3850 if (unresolved_reloc
239e1f3a 3851 && !((input_section->flags & SEC_DEBUGGING) != 0
1d5316ab
AM		 3852 && h->def_dynamic)
3853 && _bfd_elf_section_offset (output_bfd, info, input_section,
3854 rel->r_offset) != (bfd_vma) -1)
a040981f 3855 {
7073b5b9
L		 3856 switch (r_type)
3857 {
3858 case R_X86_64_32S:
a5b4ee94
L		 3859 sec = h->root.u.def.section;
3860 if ((info->nocopyreloc
3861 || (eh->def_protected
3862 && elf_has_no_copy_on_protected (h->root.u.def.section->owner)))
7073b5b9
L		 3863 && !(h->root.u.def.section->flags & SEC_CODE))
3864 return elf_x86_64_need_pic (info, input_bfd, input_section,
3865 h, NULL, NULL, howto);
3866 /* Fall through. */
3867
3868 default:
3869 _bfd_error_handler
3870 /* xgettext:c-format */
2dcf00ce
AM		 3871 (_("%pB(%pA+%#" PRIx64 "): "
3872 "unresolvable %s relocation against symbol `%s'"),
7073b5b9
L		 3873 input_bfd,
3874 input_section,
2dcf00ce 3875 (uint64_t) rel->r_offset,
7073b5b9
L		 3876 howto->name,
3877 h->root.root.string);
3878 return FALSE;
3879 }
a040981f 3880 }
c434dee6 3881
cbe950e9 3882do_relocation:
8d88c4ca 3883 r = _bfd_final_link_relocate (howto, input_bfd, input_section,
c434dee6
AJ		 3884 contents, rel->r_offset,
3885 relocation, rel->r_addend);
8d88c4ca 3886
62d78908 3887check_relocation_error:
8d88c4ca 3888 if (r != bfd_reloc_ok)
8da6118f 3889 {
c434dee6
AJ		 3890 const char *name;
3891
3892 if (h != NULL)
3893 name = h->root.root.string;
3894 else
8da6118f 3895 {
c434dee6
AJ		 3896 name = bfd_elf_string_from_elf_section (input_bfd,
3897 symtab_hdr->sh_link,
3898 sym->st_name);
3899 if (name == NULL)
b34976b6 3900 return FALSE;
c434dee6
AJ		 3901 if (*name == '\0')
3902 name = bfd_section_name (input_bfd, sec);
3903 }
3904
3905 if (r == bfd_reloc_overflow)
8b43e456 3906 {
78984959 3907 if (converted_reloc)
8b43e456
L		 3908 {
3909 info->callbacks->einfo
3910 (_("%F%P: failed to convert GOTPCREL relocation; relink with --no-relax\n"));
3911 return FALSE;
3912 }
3913 (*info->callbacks->reloc_overflow)
3914 (info, (h ? &h->root : NULL), name, howto->name,
3915 (bfd_vma) 0, input_bfd, input_section, rel->r_offset);
3916 }
c434dee6
AJ		 3917 else
3918 {
4eca0228 3919 _bfd_error_handler
695344c0 3920 /* xgettext:c-format */
2dcf00ce 3921 (_("%pB(%pA+%#" PRIx64 "): reloc against `%s': error %d"),
d003868e 3922 input_bfd, input_section,
2dcf00ce 3923 (uint64_t) rel->r_offset, name, (int) r);
b34976b6 3924 return FALSE;
8da6118f
KH		 3925 }
3926 }
60f2e42e
L		 3927
3928 if (wrel != rel)
3929 *wrel = *rel;
3930 }
3931
3932 if (wrel != rel)
3933 {
3934 Elf_Internal_Shdr *rel_hdr;
3935 size_t deleted = rel - wrel;
3936
3937 rel_hdr = _bfd_elf_single_rel_hdr (input_section->output_section);
3938 rel_hdr->sh_size -= rel_hdr->sh_entsize * deleted;
3939 if (rel_hdr->sh_size == 0)
3940 {
3941 /* It is too late to remove an empty reloc section. Leave
3942 one NONE reloc.
3943 ??? What is wrong with an empty section??? */
3944 rel_hdr->sh_size = rel_hdr->sh_entsize;
3945 deleted -= 1;
3946 }
3947 rel_hdr = _bfd_elf_single_rel_hdr (input_section);
3948 rel_hdr->sh_size -= rel_hdr->sh_entsize * deleted;
3949 input_section->reloc_count -= deleted;
8d88c4ca 3950 }
70256ad8 3951
b34976b6 3952 return TRUE;
70256ad8
AJ		 3953}
3954
3955/* Finish up dynamic symbol handling. We set the contents of various
3956 dynamic sections here. */
3957
b34976b6 3958static bfd_boolean
351f65ca
L		 3959elf_x86_64_finish_dynamic_symbol (bfd *output_bfd,
3960 struct bfd_link_info *info,
3961 struct elf_link_hash_entry *h,
aec6b87e 3962 Elf_Internal_Sym *sym)
70256ad8 3963{
0afcef53 3964 struct elf_x86_link_hash_table *htab;
f2c29a16 3965 bfd_boolean use_plt_second;
0afcef53 3966 struct elf_x86_link_hash_entry *eh;
aec6b87e 3967 bfd_boolean local_undefweak;
70256ad8 3968
0afcef53 3969 htab = elf_x86_hash_table (info, X86_64_ELF_DATA);
4dfe6ac6
NC		 3970 if (htab == NULL)
3971 return FALSE;
70256ad8 3972
f2c29a16
L		 3973 /* Use the second PLT section only if there is .plt section. */
3974 use_plt_second = htab->elf.splt != NULL && htab->plt_second != NULL;
0ff2b86e 3975
0afcef53 3976 eh = (struct elf_x86_link_hash_entry *) h;
9e9821dd
L		 3977 if (eh->no_finish_dynamic_symbol)
3978 abort ();
dd7e64d4 3979
aec6b87e
L		 3980 /* We keep PLT/GOT entries without dynamic PLT/GOT relocations for
3981 resolved undefined weak symbols in executable so that their
3982 references have value 0 at run-time. */
c5bce5c6 3983 local_undefweak = UNDEFINED_WEAK_RESOLVED_TO_ZERO (info, eh);
aec6b87e 3984
70256ad8
AJ		 3985 if (h->plt.offset != (bfd_vma) -1)
3986 {
70256ad8 3987 bfd_vma plt_index;
38b12349 3988 bfd_vma got_offset, plt_offset;
70256ad8 3989 Elf_Internal_Rela rela;
947216bf 3990 bfd_byte *loc;
0ff2b86e 3991 asection *plt, *gotplt, *relplt, *resolved_plt;
351f65ca 3992 const struct elf_backend_data *bed;
5974eba6 3993 bfd_vma plt_got_pcrel_offset;
cbe950e9
L		 3994
3995 /* When building a static executable, use .iplt, .igot.plt and
3996 .rela.iplt sections for STT_GNU_IFUNC symbols. */
6de2ae4a 3997 if (htab->elf.splt != NULL)
cbe950e9 3998 {
6de2ae4a
L		 3999 plt = htab->elf.splt;
4000 gotplt = htab->elf.sgotplt;
4001 relplt = htab->elf.srelplt;
cbe950e9
L		 4002 }
4003 else
4004 {
6de2ae4a
L		 4005 plt = htab->elf.iplt;
4006 gotplt = htab->elf.igotplt;
4007 relplt = htab->elf.irelplt;
cbe950e9 4008 }
70256ad8 4009
f3180fa9 4010 VERIFY_PLT_ENTRY (info, h, plt, gotplt, relplt, local_undefweak)
70256ad8
AJ		 4011
4012 /* Get the index in the procedure linkage table which
4013 corresponds to this symbol. This is the index of this symbol
4014 in all the symbols for which we are making plt entries. The
cbe950e9 4015 first entry in the procedure linkage table is reserved.
6bbec505 4016
cbe950e9 4017 Get the offset into the .got table of the entry that
407443a3 4018 corresponds to this function. Each .got entry is GOT_ENTRY_SIZE
cbe950e9
L		 4019 bytes. The first three are reserved for the dynamic linker.
4020
4021 For static executables, we don't reserve anything. */
4022
6de2ae4a 4023 if (plt == htab->elf.splt)
cbe950e9 4024 {
765e526c
L		 4025 got_offset = (h->plt.offset / htab->plt.plt_entry_size
4026 - htab->plt.has_plt0);
e1f98742 4027 got_offset = (got_offset + 3) * GOT_ENTRY_SIZE;
cbe950e9
L		 4028 }
4029 else
4030 {
765e526c 4031 got_offset = h->plt.offset / htab->plt.plt_entry_size;
e1f98742 4032 got_offset = got_offset * GOT_ENTRY_SIZE;
cbe950e9 4033 }
70256ad8 4034
38b12349 4035 /* Fill in the entry in the procedure linkage table. */
765e526c
L		 4036 memcpy (plt->contents + h->plt.offset, htab->plt.plt_entry,
4037 htab->plt.plt_entry_size);
f2c29a16 4038 if (use_plt_second)
0ff2b86e 4039 {
f2c29a16 4040 memcpy (htab->plt_second->contents + eh->plt_second.offset,
765e526c
L		 4041 htab->non_lazy_plt->plt_entry,
4042 htab->non_lazy_plt->plt_entry_size);
0ff2b86e 4043
f2c29a16
L		 4044 resolved_plt = htab->plt_second;
4045 plt_offset = eh->plt_second.offset;
0ff2b86e
L		 4046 }
4047 else
4048 {
0ff2b86e
L		 4049 resolved_plt = plt;
4050 plt_offset = h->plt.offset;
4051 }
eed180f8
RM		 4052
4053 /* Insert the relocation positions of the plt section. */
4054
4055 /* Put offset the PC-relative instruction referring to the GOT entry,
4056 subtracting the size of that instruction. */
ab7fede8
L		 4057 plt_got_pcrel_offset = (gotplt->output_section->vma
4058 + gotplt->output_offset
4059 + got_offset
4060 - resolved_plt->output_section->vma
4061 - resolved_plt->output_offset
4062 - plt_offset
765e526c 4063 - htab->plt.plt_got_insn_size);
ab7fede8
L		 4064
4065 /* Check PC-relative offset overflow in PLT entry. */
5974eba6 4066 if ((plt_got_pcrel_offset + 0x80000000) > 0xffffffff)
695344c0 4067 /* xgettext:c-format */
871b3ab2 4068 info->callbacks->einfo (_("%F%pB: PC-relative offset overflow in PLT entry for `%s'\n"),
ab7fede8
L		 4069 output_bfd, h->root.root.string);
4070
4071 bfd_put_32 (output_bfd, plt_got_pcrel_offset,
38b12349 4072 (resolved_plt->contents + plt_offset
765e526c 4073 + htab->plt.plt_got_offset));
cbe950e9 4074
653165cc 4075 /* Fill in the entry in the global offset table, initially this
aec6b87e
L		 4076 points to the second part of the PLT entry. Leave the entry
4077 as zero for undefined weak symbol in PIE. No PLT relocation
4078 against undefined weak symbol in PIE. */
4079 if (!local_undefweak)
cbe950e9 4080 {
765e526c 4081 if (htab->plt.has_plt0)
38b12349
L		 4082 bfd_put_64 (output_bfd, (plt->output_section->vma
4083 + plt->output_offset
4084 + h->plt.offset
765e526c 4085 + htab->lazy_plt->plt_lazy_offset),
38b12349 4086 gotplt->contents + got_offset);
aec6b87e
L		 4087
4088 /* Fill in the entry in the .rela.plt section. */
4089 rela.r_offset = (gotplt->output_section->vma
4090 + gotplt->output_offset
4091 + got_offset);
cf1070f1 4092 if (PLT_LOCAL_IFUNC_P (info, h))
aec6b87e 4093 {
871b3ab2 4094 info->callbacks->minfo (_("Local IFUNC function `%s' in %pB\n"),
6322e5c5
L		 4095 h->root.root.string,
4096 h->root.u.def.section->owner);
4097
aec6b87e
L		 4098 /* If an STT_GNU_IFUNC symbol is locally defined, generate
4099 R_X86_64_IRELATIVE instead of R_X86_64_JUMP_SLOT. */
4100 rela.r_info = htab->r_info (0, R_X86_64_IRELATIVE);
4101 rela.r_addend = (h->root.u.def.value
4102 + h->root.u.def.section->output_section->vma
4103 + h->root.u.def.section->output_offset);
4104 /* R_X86_64_IRELATIVE comes last. */
4105 plt_index = htab->next_irelative_index--;
4106 }
4107 else
4108 {
4109 rela.r_info = htab->r_info (h->dynindx, R_X86_64_JUMP_SLOT);
4110 rela.r_addend = 0;
4111 plt_index = htab->next_jump_slot_index++;
4112 }
e1f98742 4113
38b12349
L		 4114 /* Don't fill the second and third slots in PLT entry for
4115 static executables nor without PLT0. */
765e526c 4116 if (plt == htab->elf.splt && htab->plt.has_plt0)
aec6b87e 4117 {
38b12349 4118 bfd_vma plt0_offset
765e526c 4119 = h->plt.offset + htab->lazy_plt->plt_plt_insn_end;
aec6b87e
L		 4120
4121 /* Put relocation index. */
4122 bfd_put_32 (output_bfd, plt_index,
4123 (plt->contents + h->plt.offset
765e526c 4124 + htab->lazy_plt->plt_reloc_offset));
aec6b87e
L		 4125
4126 /* Put offset for jmp .PLT0 and check for overflow. We don't
4127 check relocation index for overflow since branch displacement
4128 will overflow first. */
4129 if (plt0_offset > 0x80000000)
695344c0 4130 /* xgettext:c-format */
871b3ab2 4131 info->callbacks->einfo (_("%F%pB: branch displacement overflow in PLT entry for `%s'\n"),
aec6b87e
L		 4132 output_bfd, h->root.root.string);
4133 bfd_put_32 (output_bfd, - plt0_offset,
38b12349 4134 (plt->contents + h->plt.offset
765e526c 4135 + htab->lazy_plt->plt_plt_offset));
aec6b87e 4136 }
351f65ca 4137
aec6b87e
L		 4138 bed = get_elf_backend_data (output_bfd);
4139 loc = relplt->contents + plt_index * bed->s->sizeof_rela;
4140 bed->s->swap_reloca_out (output_bfd, &rela, loc);
4141 }
dd7e64d4
L		 4142 }
4143 else if (eh->plt_got.offset != (bfd_vma) -1)
4144 {
38b12349 4145 bfd_vma got_offset, plt_offset;
dd7e64d4
L		 4146 asection *plt, *got;
4147 bfd_boolean got_after_plt;
4148 int32_t got_pcrel_offset;
dd7e64d4
L		 4149
4150 /* Set the entry in the GOT procedure linkage table. */
4151 plt = htab->plt_got;
4152 got = htab->elf.sgot;
4153 got_offset = h->got.offset;
4154
4155 if (got_offset == (bfd_vma) -1
e492d2f8 4156 || (h->type == STT_GNU_IFUNC && h->def_regular)
dd7e64d4
L		 4157 || plt == NULL
4158 || got == NULL)
4159 abort ();
70256ad8 4160
38b12349 4161 /* Use the non-lazy PLT entry template for the GOT PLT since they
dd7e64d4 4162 are the identical. */
dd7e64d4
L		 4163 /* Fill in the entry in the GOT procedure linkage table. */
4164 plt_offset = eh->plt_got.offset;
4165 memcpy (plt->contents + plt_offset,
765e526c
L		 4166 htab->non_lazy_plt->plt_entry,
4167 htab->non_lazy_plt->plt_entry_size);
dd7e64d4
L		 4168
4169 /* Put offset the PC-relative instruction referring to the GOT
4170 entry, subtracting the size of that instruction. */
4171 got_pcrel_offset = (got->output_section->vma
4172 + got->output_offset
4173 + got_offset
4174 - plt->output_section->vma
4175 - plt->output_offset
4176 - plt_offset
765e526c 4177 - htab->non_lazy_plt->plt_got_insn_size);
dd7e64d4
L		 4178
4179 /* Check PC-relative offset overflow in GOT PLT entry. */
4180 got_after_plt = got->output_section->vma > plt->output_section->vma;
4181 if ((got_after_plt && got_pcrel_offset < 0)
4182 || (!got_after_plt && got_pcrel_offset > 0))
695344c0 4183 /* xgettext:c-format */
871b3ab2 4184 info->callbacks->einfo (_("%F%pB: PC-relative offset overflow in GOT PLT entry for `%s'\n"),
dd7e64d4
L		 4185 output_bfd, h->root.root.string);
4186
4187 bfd_put_32 (output_bfd, got_pcrel_offset,
38b12349 4188 (plt->contents + plt_offset
765e526c 4189 + htab->non_lazy_plt->plt_got_offset));
dd7e64d4
L		 4190 }
4191
aec6b87e
L		 4192 if (!local_undefweak
4193 && !h->def_regular
dd7e64d4
L		 4194 && (h->plt.offset != (bfd_vma) -1
4195 || eh->plt_got.offset != (bfd_vma) -1))
4196 {
4197 /* Mark the symbol as undefined, rather than as defined in
4198 the .plt section. Leave the value if there were any
4199 relocations where pointer equality matters (this is a clue
4200 for the dynamic linker, to make function pointer
4201 comparisons work between an application and shared
4202 library), otherwise set it to zero. If a function is only
4203 called from a binary, there is no need to slow down
4204 shared libraries because of that. */
4205 sym->st_shndx = SHN_UNDEF;
4206 if (!h->pointer_equality_needed)
4207 sym->st_value = 0;
70256ad8
AJ		 4208 }
4209
4ec09950
L		 4210 _bfd_x86_elf_link_fixup_ifunc_symbol (info, htab, h, sym);
4211
aec6b87e
L		 4212 /* Don't generate dynamic GOT relocation against undefined weak
4213 symbol in executable. */
bffbf940 4214 if (h->got.offset != (bfd_vma) -1
0afcef53
L		 4215 && ! GOT_TLS_GD_ANY_P (elf_x86_hash_entry (h)->tls_type)
4216 && elf_x86_hash_entry (h)->tls_type != GOT_TLS_IE
aec6b87e 4217 && !local_undefweak)
053579d7 4218 {
053579d7 4219 Elf_Internal_Rela rela;
233cc9c1 4220 asection *relgot = htab->elf.srelgot;
053579d7
AJ		 4221
4222 /* This symbol has an entry in the global offset table. Set it
bffbf940 4223 up. */
6de2ae4a 4224 if (htab->elf.sgot == NULL || htab->elf.srelgot == NULL)
c434dee6 4225 abort ();
053579d7 4226
6de2ae4a
L		 4227 rela.r_offset = (htab->elf.sgot->output_section->vma
4228 + htab->elf.sgot->output_offset
dc810e39 4229 + (h->got.offset &~ (bfd_vma) 1));
053579d7
AJ		 4230
4231 /* If this is a static link, or it is a -Bsymbolic link and the
4232 symbol is defined locally or was forced to be local because
4233 of a version file, we just want to emit a RELATIVE reloc.
4234 The entry in the global offset table will already have been
4235 initialized in the relocate_section function. */
710ab287 4236 if (h->def_regular
0018b0a3
L		 4237 && h->type == STT_GNU_IFUNC)
4238 {
233cc9c1
L		 4239 if (h->plt.offset == (bfd_vma) -1)
4240 {
4241 /* STT_GNU_IFUNC is referenced without PLT. */
4242 if (htab->elf.splt == NULL)
4243 {
4244 /* use .rel[a].iplt section to store .got relocations
4245 in static executable. */
4246 relgot = htab->elf.irelplt;
4247 }
6999821f 4248 if (SYMBOL_REFERENCES_LOCAL_P (info, h))
233cc9c1 4249 {
871b3ab2 4250 info->callbacks->minfo (_("Local IFUNC function `%s' in %pB\n"),
6322e5c5
L		 4251 h->root.root.string,
4252 h->root.u.def.section->owner);
4253
233cc9c1
L		 4254 rela.r_info = htab->r_info (0,
4255 R_X86_64_IRELATIVE);
4256 rela.r_addend = (h->root.u.def.value
4257 + h->root.u.def.section->output_section->vma
4258 + h->root.u.def.section->output_offset);
4259 }
4260 else
4261 goto do_glob_dat;
4262 }
4263 else if (bfd_link_pic (info))
710ab287
L		 4264 {
4265 /* Generate R_X86_64_GLOB_DAT. */
4266 goto do_glob_dat;
4267 }
4268 else
4269 {
90d60710 4270 asection *plt;
aab82f4c 4271 bfd_vma plt_offset;
90d60710 4272
710ab287
L		 4273 if (!h->pointer_equality_needed)
4274 abort ();
4275
4276 /* For non-shared object, we can't use .got.plt, which
4277 contains the real function addres if we need pointer
4278 equality. We load the GOT entry with the PLT entry. */
f2c29a16 4279 if (htab->plt_second != NULL)
aab82f4c 4280 {
f2c29a16
L		 4281 plt = htab->plt_second;
4282 plt_offset = eh->plt_second.offset;
aab82f4c
L		 4283 }
4284 else
4285 {
4286 plt = htab->elf.splt ? htab->elf.splt : htab->elf.iplt;
4287 plt_offset = h->plt.offset;
4288 }
710ab287
L		 4289 bfd_put_64 (output_bfd, (plt->output_section->vma
4290 + plt->output_offset
aab82f4c 4291 + plt_offset),
6de2ae4a 4292 htab->elf.sgot->contents + h->got.offset);
710ab287
L		 4293 return TRUE;
4294 }
0018b0a3 4295 }
0e1862bb 4296 else if (bfd_link_pic (info)
6999821f 4297 && SYMBOL_REFERENCES_LOCAL_P (info, h))
053579d7 4298 {
83924b38 4299 if (!SYMBOL_DEFINED_NON_SHARED_P (h))
41bed6dd 4300 return FALSE;
cc78d0af 4301 BFD_ASSERT((h->got.offset & 1) != 0);
351f65ca 4302 rela.r_info = htab->r_info (0, R_X86_64_RELATIVE);
053579d7
AJ		 4303 rela.r_addend = (h->root.u.def.value
4304 + h->root.u.def.section->output_section->vma
4305 + h->root.u.def.section->output_offset);
4306 }
4307 else
4308 {
4309 BFD_ASSERT((h->got.offset & 1) == 0);
710ab287 4310do_glob_dat:
c434dee6 4311 bfd_put_64 (output_bfd, (bfd_vma) 0,
6de2ae4a 4312 htab->elf.sgot->contents + h->got.offset);
351f65ca 4313 rela.r_info = htab->r_info (h->dynindx, R_X86_64_GLOB_DAT);
053579d7
AJ		 4314 rela.r_addend = 0;
4315 }
4316
233cc9c1 4317 elf_append_rela (output_bfd, relgot, &rela);
053579d7
AJ		 4318 }
4319
f5385ebf 4320 if (h->needs_copy)
70256ad8 4321 {
70256ad8 4322 Elf_Internal_Rela rela;
5474d94f 4323 asection *s;
70256ad8
AJ		 4324
4325 /* This symbol needs a copy reloc. Set it up. */
ff38b4cc 4326 VERIFY_COPY_RELOC (h, htab)
70256ad8
AJ		 4327
4328 rela.r_offset = (h->root.u.def.value
4329 + h->root.u.def.section->output_section->vma
4330 + h->root.u.def.section->output_offset);
351f65ca 4331 rela.r_info = htab->r_info (h->dynindx, R_X86_64_COPY);
70256ad8 4332 rela.r_addend = 0;
afbf7e8e 4333 if (h->root.u.def.section == htab->elf.sdynrelro)
5474d94f
AM		 4334 s = htab->elf.sreldynrelro;
4335 else
4336 s = htab->elf.srelbss;
4337 elf_append_rela (output_bfd, s, &rela);
70256ad8
AJ		 4338 }
4339
b34976b6 4340 return TRUE;
70256ad8
AJ		 4341}
4342
c25bc9fc
L		 4343/* Finish up local dynamic symbol handling. We set the contents of
4344 various dynamic sections here. */
4345
4346static bfd_boolean
351f65ca 4347elf_x86_64_finish_local_dynamic_symbol (void **slot, void *inf)
c25bc9fc
L		 4348{
4349 struct elf_link_hash_entry *h
4350 = (struct elf_link_hash_entry *) *slot;
4351 struct bfd_link_info *info
eed180f8 4352 = (struct bfd_link_info *) inf;
c25bc9fc 4353
351f65ca 4354 return elf_x86_64_finish_dynamic_symbol (info->output_bfd,
5f0f0847 4355 info, h, NULL);
c25bc9fc
L		 4356}
4357
aec6b87e
L		 4358/* Finish up undefined weak symbol handling in PIE. Fill its PLT entry
4359 here since undefined weak symbol may not be dynamic and may not be
4360 called for elf_x86_64_finish_dynamic_symbol. */
4361
4362static bfd_boolean
4363elf_x86_64_pie_finish_undefweak_symbol (struct bfd_hash_entry *bh,
4364 void *inf)
4365{
4366 struct elf_link_hash_entry *h = (struct elf_link_hash_entry *) bh;
4367 struct bfd_link_info *info = (struct bfd_link_info *) inf;
4368
4369 if (h->root.type != bfd_link_hash_undefweak
4370 || h->dynindx != -1)
4371 return TRUE;
4372
4373 return elf_x86_64_finish_dynamic_symbol (info->output_bfd,
5f0f0847 4374 info, h, NULL);
aec6b87e
L		 4375}
4376
c434dee6
AJ		 4377/* Used to decide how to sort relocs in an optimal manner for the
4378 dynamic linker, before writing them out. */
4379
4380static enum elf_reloc_type_class
cae1fbbb 4381elf_x86_64_reloc_type_class (const struct bfd_link_info *info,
7e612e98
AM		 4382 const asection *rel_sec ATTRIBUTE_UNUSED,
4383 const Elf_Internal_Rela *rela)
c434dee6 4384{
cae1fbbb
L		 4385 bfd *abfd = info->output_bfd;
4386 const struct elf_backend_data *bed = get_elf_backend_data (abfd);
0afcef53
L		 4387 struct elf_x86_link_hash_table *htab
4388 = elf_x86_hash_table (info, X86_64_ELF_DATA);
cae1fbbb 4389
d9e3b590
L		 4390 if (htab->elf.dynsym != NULL
4391 && htab->elf.dynsym->contents != NULL)
4392 {
4393 /* Check relocation against STT_GNU_IFUNC symbol if there are
07d6d2b8 4394 dynamic symbols. */
d9e3b590 4395 unsigned long r_symndx = htab->r_sym (rela->r_info);
897463b1
L		 4396 if (r_symndx != STN_UNDEF)
4397 {
4398 Elf_Internal_Sym sym;
4399 if (!bed->s->swap_symbol_in (abfd,
4400 (htab->elf.dynsym->contents
4401 + r_symndx * bed->s->sizeof_sym),
4402 0, &sym))
4403 abort ();
d9e3b590 4404
897463b1
L		 4405 if (ELF_ST_TYPE (sym.st_info) == STT_GNU_IFUNC)
4406 return reloc_class_ifunc;
4407 }
d9e3b590 4408 }
cae1fbbb 4409
351f65ca 4410 switch ((int) ELF32_R_TYPE (rela->r_info))
c434dee6 4411 {
c428ce9d
L		 4412 case R_X86_64_IRELATIVE:
4413 return reloc_class_ifunc;
c434dee6 4414 case R_X86_64_RELATIVE:
1da80baa 4415 case R_X86_64_RELATIVE64:
c434dee6
AJ		 4416 return reloc_class_relative;
4417 case R_X86_64_JUMP_SLOT:
4418 return reloc_class_plt;
4419 case R_X86_64_COPY:
4420 return reloc_class_copy;
4421 default:
4422 return reloc_class_normal;
4423 }
4424}
4425
70256ad8
AJ		 4426/* Finish up the dynamic sections. */
4427
b34976b6 4428static bfd_boolean
351f65ca
L		 4429elf_x86_64_finish_dynamic_sections (bfd *output_bfd,
4430 struct bfd_link_info *info)
70256ad8 4431{
0afcef53 4432 struct elf_x86_link_hash_table *htab;
70256ad8 4433
9577f60b 4434 htab = _bfd_x86_elf_finish_dynamic_sections (output_bfd, info);
4dfe6ac6
NC		 4435 if (htab == NULL)
4436 return FALSE;
4437
9577f60b
L		 4438 if (! htab->elf.dynamic_sections_created)
4439 return TRUE;
70256ad8 4440
9577f60b 4441 if (htab->elf.splt && htab->elf.splt->size > 0)
e41b3a13 4442 {
9577f60b
L		 4443 elf_section_data (htab->elf.splt->output_section)
4444 ->this_hdr.sh_entsize = htab->plt.plt_entry_size;
e41b3a13 4445
9577f60b 4446 if (htab->plt.has_plt0)
fff53dae 4447 {
9577f60b
L		 4448 /* Fill in the special first entry in the procedure linkage
4449 table. */
4450 memcpy (htab->elf.splt->contents,
4451 htab->lazy_plt->plt0_entry,
4452 htab->lazy_plt->plt0_entry_size);
4453 /* Add offset for pushq GOT+8(%rip), since the instruction
4454 uses 6 bytes subtract this value. */
4455 bfd_put_32 (output_bfd,
4456 (htab->elf.sgotplt->output_section->vma
4457 + htab->elf.sgotplt->output_offset
4458 + 8
4459 - htab->elf.splt->output_section->vma
4460 - htab->elf.splt->output_offset
4461 - 6),
4462 (htab->elf.splt->contents
4463 + htab->lazy_plt->plt0_got1_offset));
4464 /* Add offset for the PC-relative instruction accessing
4465 GOT+16, subtracting the offset to the end of that
4466 instruction. */
4467 bfd_put_32 (output_bfd,
4468 (htab->elf.sgotplt->output_section->vma
4469 + htab->elf.sgotplt->output_offset
4470 + 16
4471 - htab->elf.splt->output_section->vma
4472 - htab->elf.splt->output_offset
4473 - htab->lazy_plt->plt0_got2_insn_end),
4474 (htab->elf.splt->contents
4475 + htab->lazy_plt->plt0_got2_offset));
fff53dae 4476 }
fff53dae 4477
9577f60b 4478 if (htab->tlsdesc_plt)
8361ed4d 4479 {
9577f60b
L		 4480 bfd_put_64 (output_bfd, (bfd_vma) 0,
4481 htab->elf.sgot->contents + htab->tlsdesc_got);
4482
4483 memcpy (htab->elf.splt->contents + htab->tlsdesc_plt,
92e68c1d
L		 4484 htab->lazy_plt->plt_tlsdesc_entry,
4485 htab->lazy_plt->plt_tlsdesc_entry_size);
9577f60b 4486
bf54968b
L		 4487 /* Add offset for pushq GOT+8(%rip), since ENDBR64 uses 4
4488 bytes and the instruction uses 6 bytes, subtract these
4489 values. */
9577f60b
L		 4490 bfd_put_32 (output_bfd,
4491 (htab->elf.sgotplt->output_section->vma
4492 + htab->elf.sgotplt->output_offset
4493 + 8
4494 - htab->elf.splt->output_section->vma
4495 - htab->elf.splt->output_offset
4496 - htab->tlsdesc_plt
92e68c1d 4497 - htab->lazy_plt->plt_tlsdesc_got1_insn_end),
9577f60b
L		 4498 (htab->elf.splt->contents
4499 + htab->tlsdesc_plt
92e68c1d 4500 + htab->lazy_plt->plt_tlsdesc_got1_offset));
bf54968b
L		 4501 /* Add offset for indirect branch via GOT+TDG, where TDG
4502 stands for htab->tlsdesc_got, subtracting the offset
4503 to the end of that instruction. */
9577f60b
L		 4504 bfd_put_32 (output_bfd,
4505 (htab->elf.sgot->output_section->vma
4506 + htab->elf.sgot->output_offset
4507 + htab->tlsdesc_got
4508 - htab->elf.splt->output_section->vma
4509 - htab->elf.splt->output_offset
4510 - htab->tlsdesc_plt
92e68c1d 4511 - htab->lazy_plt->plt_tlsdesc_got2_insn_end),
9577f60b 4512 (htab->elf.splt->contents
92e68c1d
L		 4513 + htab->tlsdesc_plt
4514 + htab->lazy_plt->plt_tlsdesc_got2_offset));
8361ed4d
L		 4515 }
4516 }
4517
aec6b87e
L		 4518 /* Fill PLT entries for undefined weak symbols in PIE. */
4519 if (bfd_link_pie (info))
4520 bfd_hash_traverse (&info->hash->table,
4521 elf_x86_64_pie_finish_undefweak_symbol,
4522 info);
4523
b34976b6 4524 return TRUE;
8d88c4ca
NC		 4525}
4526
233cc9c1
L		 4527/* Fill PLT/GOT entries and allocate dynamic relocations for local
4528 STT_GNU_IFUNC symbols, which aren't in the ELF linker hash table.
4529 It has to be done before elf_link_sort_relocs is called so that
4530 dynamic relocations are properly sorted. */
4531
4532static bfd_boolean
4533elf_x86_64_output_arch_local_syms
4534 (bfd *output_bfd ATTRIBUTE_UNUSED,
4535 struct bfd_link_info *info,
4536 void *flaginfo ATTRIBUTE_UNUSED,
4537 int (*func) (void *, const char *,
4538 Elf_Internal_Sym *,
4539 asection *,
4540 struct elf_link_hash_entry *) ATTRIBUTE_UNUSED)
4541{
0afcef53
L		 4542 struct elf_x86_link_hash_table *htab
4543 = elf_x86_hash_table (info, X86_64_ELF_DATA);
233cc9c1
L		 4544 if (htab == NULL)
4545 return FALSE;
4546
4547 /* Fill PLT and GOT entries for local STT_GNU_IFUNC symbols. */
4548 htab_traverse (htab->loc_hash_table,
4549 elf_x86_64_finish_local_dynamic_symbol,
4550 info);
4551
4552 return TRUE;
4553}
4554
38b12349 4555/* Forward declaration. */
765e526c 4556static const struct elf_x86_lazy_plt_layout elf_x86_64_nacl_plt;
38b12349
L		 4557
4558/* Similar to _bfd_elf_get_synthetic_symtab. Support PLTs with all
4559 dynamic relocations. */
4560
4561static long
4562elf_x86_64_get_synthetic_symtab (bfd *abfd,
4563 long symcount ATTRIBUTE_UNUSED,
4564 asymbol **syms ATTRIBUTE_UNUSED,
4565 long dynsymcount,
4566 asymbol **dynsyms,
4567 asymbol **ret)
4568{
f493882d 4569 long count, i, n;
38b12349 4570 int j;
38b12349 4571 bfd_byte *plt_contents;
f493882d 4572 long relsize;
765e526c
L		 4573 const struct elf_x86_lazy_plt_layout *lazy_plt;
4574 const struct elf_x86_non_lazy_plt_layout *non_lazy_plt;
4575 const struct elf_x86_lazy_plt_layout *lazy_bnd_plt;
4576 const struct elf_x86_non_lazy_plt_layout *non_lazy_bnd_plt;
4577 const struct elf_x86_lazy_plt_layout *lazy_ibt_plt;
4578 const struct elf_x86_non_lazy_plt_layout *non_lazy_ibt_plt;
38b12349 4579 asection *plt;
f493882d
L		 4580 enum elf_x86_plt_type plt_type;
4581 struct elf_x86_plt plts[] =
144bed8d 4582 {
38b12349
L		 4583 { ".plt", NULL, NULL, plt_unknown, 0, 0, 0, 0 },
4584 { ".plt.got", NULL, NULL, plt_non_lazy, 0, 0, 0, 0 },
f2c29a16
L		 4585 { ".plt.sec", NULL, NULL, plt_second, 0, 0, 0, 0 },
4586 { ".plt.bnd", NULL, NULL, plt_second, 0, 0, 0, 0 },
dd9e66ee 4587 { NULL, NULL, NULL, plt_non_lazy, 0, 0, 0, 0 }
38b12349 4588 };
144bed8d 4589
38b12349 4590 *ret = NULL;
144bed8d 4591
38b12349
L		 4592 if ((abfd->flags & (DYNAMIC | EXEC_P)) == 0)
4593 return 0;
144bed8d 4594
38b12349
L		 4595 if (dynsymcount <= 0)
4596 return 0;
cca5b8b6 4597
38b12349
L		 4598 relsize = bfd_get_dynamic_reloc_upper_bound (abfd);
4599 if (relsize <= 0)
4600 return -1;
4601
3b4c3844 4602 if (get_elf_x86_backend_data (abfd)->target_os != is_nacl)
144bed8d 4603 {
38b12349
L		 4604 lazy_plt = &elf_x86_64_lazy_plt;
4605 non_lazy_plt = &elf_x86_64_non_lazy_plt;
4606 lazy_bnd_plt = &elf_x86_64_lazy_bnd_plt;
4607 non_lazy_bnd_plt = &elf_x86_64_non_lazy_bnd_plt;
ee2fdd6f
L		 4608 if (ABI_64_P (abfd))
4609 {
4610 lazy_ibt_plt = &elf_x86_64_lazy_ibt_plt;
4611 non_lazy_ibt_plt = &elf_x86_64_non_lazy_ibt_plt;
4612 }
4613 else
4614 {
4615 lazy_ibt_plt = &elf_x32_lazy_ibt_plt;
4616 non_lazy_ibt_plt = &elf_x32_non_lazy_ibt_plt;
4617 }
38b12349
L		 4618 }
4619 else
4620 {
4621 lazy_plt = &elf_x86_64_nacl_plt;
4622 non_lazy_plt = NULL;
4623 lazy_bnd_plt = NULL;
4624 non_lazy_bnd_plt = NULL;
ee2fdd6f
L		 4625 lazy_ibt_plt = NULL;
4626 non_lazy_ibt_plt = NULL;
38b12349 4627 }
144bed8d 4628
38b12349
L		 4629 count = 0;
4630 for (j = 0; plts[j].name != NULL; j++)
4631 {
4632 plt = bfd_get_section_by_name (abfd, plts[j].name);
90efb642 4633 if (plt == NULL || plt->size == 0)
6f25f223 4634 continue;
533d0af0 4635
38b12349
L		 4636 /* Get the PLT section contents. */
4637 plt_contents = (bfd_byte *) bfd_malloc (plt->size);
4638 if (plt_contents == NULL)
4639 break;
4640 if (!bfd_get_section_contents (abfd, (asection *) plt,
4641 plt_contents, 0, plt->size))
4642 {
4643 free (plt_contents);
4644 break;
4645 }
144bed8d 4646
38b12349
L		 4647 /* Check what kind of PLT it is. */
4648 plt_type = plt_unknown;
90efb642
L		 4649 if (plts[j].type == plt_unknown
4650 && (plt->size >= (lazy_plt->plt_entry_size
4651 + lazy_plt->plt_entry_size)))
144bed8d 4652 {
38b12349
L		 4653 /* Match lazy PLT first. Need to check the first two
4654 instructions. */
4655 if ((memcmp (plt_contents, lazy_plt->plt0_entry,
4656 lazy_plt->plt0_got1_offset) == 0)
4657 && (memcmp (plt_contents + 6, lazy_plt->plt0_entry + 6,
4658 2) == 0))
4659 plt_type = plt_lazy;
4660 else if (lazy_bnd_plt != NULL
4661 && (memcmp (plt_contents, lazy_bnd_plt->plt0_entry,
4662 lazy_bnd_plt->plt0_got1_offset) == 0)
4663 && (memcmp (plt_contents + 6,
4664 lazy_bnd_plt->plt0_entry + 6, 3) == 0))
ec1f73bb 4665 {
f2c29a16 4666 plt_type = plt_lazy | plt_second;
ee2fdd6f
L		 4667 /* The fist entry in the lazy IBT PLT is the same as the
4668 lazy BND PLT. */
4669 if ((memcmp (plt_contents + lazy_ibt_plt->plt_entry_size,
4670 lazy_ibt_plt->plt_entry,
4671 lazy_ibt_plt->plt_got_offset) == 0))
4672 lazy_plt = lazy_ibt_plt;
4673 else
4674 lazy_plt = lazy_bnd_plt;
ec1f73bb 4675 }
144bed8d 4676 }
fca6ae69 4677
38b12349 4678 if (non_lazy_plt != NULL
90efb642
L		 4679 && (plt_type == plt_unknown || plt_type == plt_non_lazy)
4680 && plt->size >= non_lazy_plt->plt_entry_size)
38b12349
L		 4681 {
4682 /* Match non-lazy PLT. */
4683 if (memcmp (plt_contents, non_lazy_plt->plt_entry,
4684 non_lazy_plt->plt_got_offset) == 0)
4685 plt_type = plt_non_lazy;
4686 }
4687
ee2fdd6f 4688 if (plt_type == plt_unknown || plt_type == plt_second)
38b12349 4689 {
ee2fdd6f 4690 if (non_lazy_bnd_plt != NULL
90efb642 4691 && plt->size >= non_lazy_bnd_plt->plt_entry_size
ee2fdd6f
L		 4692 && (memcmp (plt_contents, non_lazy_bnd_plt->plt_entry,
4693 non_lazy_bnd_plt->plt_got_offset) == 0))
38b12349 4694 {
ee2fdd6f 4695 /* Match BND PLT. */
f2c29a16 4696 plt_type = plt_second;
38b12349
L		 4697 non_lazy_plt = non_lazy_bnd_plt;
4698 }
ee2fdd6f 4699 else if (non_lazy_ibt_plt != NULL
90efb642 4700 && plt->size >= non_lazy_ibt_plt->plt_entry_size
ee2fdd6f
L		 4701 && (memcmp (plt_contents,
4702 non_lazy_ibt_plt->plt_entry,
4703 non_lazy_ibt_plt->plt_got_offset) == 0))
4704 {
4705 /* Match IBT PLT. */
4706 plt_type = plt_second;
4707 non_lazy_plt = non_lazy_ibt_plt;
4708 }
38b12349
L		 4709 }
4710
4711 if (plt_type == plt_unknown)
37c0b6ee
L		 4712 {
4713 free (plt_contents);
4714 continue;
4715 }
38b12349
L		 4716
4717 plts[j].sec = plt;
4718 plts[j].type = plt_type;
4719
4720 if ((plt_type & plt_lazy))
4721 {
4722 plts[j].plt_got_offset = lazy_plt->plt_got_offset;
4723 plts[j].plt_got_insn_size = lazy_plt->plt_got_insn_size;
4724 plts[j].plt_entry_size = lazy_plt->plt_entry_size;
4725 /* Skip PLT0 in lazy PLT. */
4726 i = 1;
4727 }
4728 else
4729 {
4730 plts[j].plt_got_offset = non_lazy_plt->plt_got_offset;
4731 plts[j].plt_got_insn_size = non_lazy_plt->plt_got_insn_size;
4732 plts[j].plt_entry_size = non_lazy_plt->plt_entry_size;
4733 i = 0;
4734 }
4735
f2c29a16
L		 4736 /* Skip lazy PLT when the second PLT is used. */
4737 if (plt_type == (plt_lazy | plt_second))
38b12349
L		 4738 plts[j].count = 0;
4739 else
4740 {
4741 n = plt->size / plts[j].plt_entry_size;
4742 plts[j].count = n;
4743 count += n - i;
4744 }
4745
4746 plts[j].contents = plt_contents;
144bed8d
L		 4747 }
4748
f493882d
L		 4749 return _bfd_x86_elf_get_synthetic_symtab (abfd, count, relsize,
4750 (bfd_vma) 0, plts, dynsyms,
4751 ret);
0ff2b86e
L		 4752}
4753
d2b2c203
DJ		 4754/* Handle an x86-64 specific section when reading an object file. This
4755 is called when elfcode.h finds a section with an unknown type. */
4756
4757static bfd_boolean
0c723101
L		 4758elf_x86_64_section_from_shdr (bfd *abfd, Elf_Internal_Shdr *hdr,
4759 const char *name, int shindex)
d2b2c203
DJ		 4760{
4761 if (hdr->sh_type != SHT_X86_64_UNWIND)
4762 return FALSE;
4763
6dc132d9 4764 if (! _bfd_elf_make_section_from_shdr (abfd, hdr, name, shindex))
d2b2c203
DJ		 4765 return FALSE;
4766
4767 return TRUE;
4768}
4769
3b22753a
L		 4770/* Hook called by the linker routine which adds symbols from an object
4771 file. We use it to put SHN_X86_64_LCOMMON items in .lbss, instead
4772 of .bss. */
4773
4774static bfd_boolean
351f65ca 4775elf_x86_64_add_symbol_hook (bfd *abfd,
a43942db 4776 struct bfd_link_info *info ATTRIBUTE_UNUSED,
351f65ca
L		 4777 Elf_Internal_Sym *sym,
4778 const char **namep ATTRIBUTE_UNUSED,
4779 flagword *flagsp ATTRIBUTE_UNUSED,
4780 asection **secp,
4781 bfd_vma *valp)
3b22753a
L		 4782{
4783 asection *lcomm;
4784
4785 switch (sym->st_shndx)
4786 {
4787 case SHN_X86_64_LCOMMON:
4788 lcomm = bfd_get_section_by_name (abfd, "LARGE_COMMON");
4789 if (lcomm == NULL)
4790 {
4791 lcomm = bfd_make_section_with_flags (abfd,
4792 "LARGE_COMMON",
4793 (SEC_ALLOC
4794 | SEC_IS_COMMON
4795 | SEC_LINKER_CREATED));
4796 if (lcomm == NULL)
4797 return FALSE;
4798 elf_section_flags (lcomm) |= SHF_X86_64_LARGE;
4799 }
4800 *secp = lcomm;
4801 *valp = sym->st_size;
c35bdf6e 4802 return TRUE;
3b22753a 4803 }
d8045f23 4804
3b22753a
L		 4805 return TRUE;
4806}
4807
4808
4809/* Given a BFD section, try to locate the corresponding ELF section
4810 index. */
4811
4812static bfd_boolean
351f65ca
L		 4813elf_x86_64_elf_section_from_bfd_section (bfd *abfd ATTRIBUTE_UNUSED,
4814 asection *sec, int *index_return)
3b22753a
L		 4815{
4816 if (sec == &_bfd_elf_large_com_section)
4817 {
91d6fa6a 4818 *index_return = SHN_X86_64_LCOMMON;
3b22753a
L		 4819 return TRUE;
4820 }
4821 return FALSE;
4822}
4823
4824/* Process a symbol. */
4825
4826static void
351f65ca
L		 4827elf_x86_64_symbol_processing (bfd *abfd ATTRIBUTE_UNUSED,
4828 asymbol *asym)
3b22753a
L		 4829{
4830 elf_symbol_type *elfsym = (elf_symbol_type *) asym;
4831
4832 switch (elfsym->internal_elf_sym.st_shndx)
4833 {
4834 case SHN_X86_64_LCOMMON:
4835 asym->section = &_bfd_elf_large_com_section;
4836 asym->value = elfsym->internal_elf_sym.st_size;
4837 /* Common symbol doesn't set BSF_GLOBAL. */
4838 asym->flags &= ~BSF_GLOBAL;
4839 break;
4840 }
4841}
4842
4843static bfd_boolean
351f65ca 4844elf_x86_64_common_definition (Elf_Internal_Sym *sym)
3b22753a
L		 4845{
4846 return (sym->st_shndx == SHN_COMMON
4847 || sym->st_shndx == SHN_X86_64_LCOMMON);
4848}
4849
4850static unsigned int
351f65ca 4851elf_x86_64_common_section_index (asection *sec)
3b22753a
L		 4852{
4853 if ((elf_section_flags (sec) & SHF_X86_64_LARGE) == 0)
4854 return SHN_COMMON;
4855 else
4856 return SHN_X86_64_LCOMMON;
4857}
4858
4859static asection *
351f65ca 4860elf_x86_64_common_section (asection *sec)
3b22753a
L		 4861{
4862 if ((elf_section_flags (sec) & SHF_X86_64_LARGE) == 0)
4863 return bfd_com_section_ptr;
4864 else
4865 return &_bfd_elf_large_com_section;
4866}
4867
4868static bfd_boolean
5d13b3b3
AM		 4869elf_x86_64_merge_symbol (struct elf_link_hash_entry *h,
4870 const Elf_Internal_Sym *sym,
351f65ca 4871 asection **psec,
5d13b3b3
AM		 4872 bfd_boolean newdef,
4873 bfd_boolean olddef,
351f65ca 4874 bfd *oldbfd,
5d13b3b3 4875 const asection *oldsec)
3b22753a
L		 4876{
4877 /* A normal common symbol and a large common symbol result in a
00492999
L		 4878 normal common symbol. We turn the large common symbol into a
4879 normal one. */
5d13b3b3 4880 if (!olddef
3b22753a 4881 && h->root.type == bfd_link_hash_common
5d13b3b3
AM		 4882 && !newdef
4883 && bfd_is_com_section (*psec)
4884 && oldsec != *psec)
3b22753a 4885 {
00492999 4886 if (sym->st_shndx == SHN_COMMON
5d13b3b3 4887 && (elf_section_flags (oldsec) & SHF_X86_64_LARGE) != 0)
00492999
L		 4888 {
4889 h->root.u.c.p->section
4890 = bfd_make_section_old_way (oldbfd, "COMMON");
4891 h->root.u.c.p->section->flags = SEC_ALLOC;
4892 }
4893 else if (sym->st_shndx == SHN_X86_64_LCOMMON
5d13b3b3
AM		 4894 && (elf_section_flags (oldsec) & SHF_X86_64_LARGE) == 0)
4895 *psec = bfd_com_section_ptr;
3b22753a
L		 4896 }
4897
4898 return TRUE;
4899}
4900
4901static int
351f65ca
L		 4902elf_x86_64_additional_program_headers (bfd *abfd,
4903 struct bfd_link_info *info ATTRIBUTE_UNUSED)
3b22753a
L		 4904{
4905 asection *s;
9a2e389a 4906 int count = 0;
3b22753a
L		 4907
4908 /* Check to see if we need a large readonly segment. */
4909 s = bfd_get_section_by_name (abfd, ".lrodata");
4910 if (s && (s->flags & SEC_LOAD))
4911 count++;
4912
4913 /* Check to see if we need a large data segment. Since .lbss sections
4914 is placed right after the .bss section, there should be no need for
4915 a large data segment just because of .lbss. */
4916 s = bfd_get_section_by_name (abfd, ".ldata");
4917 if (s && (s->flags & SEC_LOAD))
4918 count++;
4919
4920 return count;
4921}
4922
c543bf9a
L		 4923/* Return TRUE iff relocations for INPUT are compatible with OUTPUT. */
4924
4925static bfd_boolean
4926elf_x86_64_relocs_compatible (const bfd_target *input,
4927 const bfd_target *output)
4928{
4929 return ((xvec_get_elf_backend_data (input)->s->elfclass
4930 == xvec_get_elf_backend_data (output)->s->elfclass)
4931 && _bfd_elf_relocs_compatible (input, output));
4932}
4933
38b12349
L		 4934/* Set up x86-64 GNU properties. Return the first relocatable ELF input
4935 with GNU properties if found. Otherwise, return NULL. */
4936
4937static bfd *
4938elf_x86_64_link_setup_gnu_properties (struct bfd_link_info *info)
4939{
1de031c8 4940 struct elf_x86_init_table init_table;
ee2fdd6f 4941
78984959
L		 4942 if ((int) R_X86_64_standard >= (int) R_X86_64_converted_reloc_bit
4943 || (int) R_X86_64_max <= (int) R_X86_64_converted_reloc_bit
4944 || ((int) (R_X86_64_GNU_VTINHERIT | R_X86_64_converted_reloc_bit)
4945 != (int) R_X86_64_GNU_VTINHERIT)
4946 || ((int) (R_X86_64_GNU_VTENTRY | R_X86_64_converted_reloc_bit)
4947 != (int) R_X86_64_GNU_VTENTRY))
4948 abort ();
4949
851b6fa1
L		 4950 /* This is unused for x86-64. */
4951 init_table.plt0_pad_byte = 0x90;
4952
3b4c3844 4953 if (get_elf_x86_backend_data (info->output_bfd)->target_os != is_nacl)
73784fa5 4954 {
a6798bab 4955 if (info->bndplt)
ee2fdd6f 4956 {
1de031c8
L		 4957 init_table.lazy_plt = &elf_x86_64_lazy_bnd_plt;
4958 init_table.non_lazy_plt = &elf_x86_64_non_lazy_bnd_plt;
ee2fdd6f
L		 4959 }
4960 else
4961 {
1de031c8
L		 4962 init_table.lazy_plt = &elf_x86_64_lazy_plt;
4963 init_table.non_lazy_plt = &elf_x86_64_non_lazy_plt;
ee2fdd6f 4964 }
38b12349 4965
a6798bab 4966 if (ABI_64_P (info->output_bfd))
38b12349 4967 {
1de031c8
L		 4968 init_table.lazy_ibt_plt = &elf_x86_64_lazy_ibt_plt;
4969 init_table.non_lazy_ibt_plt = &elf_x86_64_non_lazy_ibt_plt;
38b12349
L		 4970 }
4971 else
4972 {
1de031c8
L		 4973 init_table.lazy_ibt_plt = &elf_x32_lazy_ibt_plt;
4974 init_table.non_lazy_ibt_plt = &elf_x32_non_lazy_ibt_plt;
38b12349 4975 }
38b12349
L		 4976 }
4977 else
4978 {
1de031c8
L		 4979 init_table.lazy_plt = &elf_x86_64_nacl_plt;
4980 init_table.non_lazy_plt = NULL;
4981 init_table.lazy_ibt_plt = NULL;
4982 init_table.non_lazy_ibt_plt = NULL;
38b12349
L		 4983 }
4984
7a382c1c
L		 4985 if (ABI_64_P (info->output_bfd))
4986 {
1de031c8
L		 4987 init_table.r_info = elf64_r_info;
4988 init_table.r_sym = elf64_r_sym;
7a382c1c
L		 4989 }
4990 else
4991 {
1de031c8
L		 4992 init_table.r_info = elf32_r_info;
4993 init_table.r_sym = elf32_r_sym;
7a382c1c
L		 4994 }
4995
1de031c8 4996 return _bfd_x86_elf_link_setup_gnu_properties (info, &init_table);
38b12349
L		 4997}
4998
9a2e389a 4999static const struct bfd_elf_special_section
46bed679 5000elf_x86_64_special_sections[]=
3b22753a 5001{
0112cd26
NC		 5002 { STRING_COMMA_LEN (".gnu.linkonce.lb"), -2, SHT_NOBITS, SHF_ALLOC + SHF_WRITE + SHF_X86_64_LARGE},
5003 { STRING_COMMA_LEN (".gnu.linkonce.lr"), -2, SHT_PROGBITS, SHF_ALLOC + SHF_X86_64_LARGE},
5004 { STRING_COMMA_LEN (".gnu.linkonce.lt"), -2, SHT_PROGBITS, SHF_ALLOC + SHF_EXECINSTR + SHF_X86_64_LARGE},
07d6d2b8 5005 { STRING_COMMA_LEN (".lbss"), -2, SHT_NOBITS, SHF_ALLOC + SHF_WRITE + SHF_X86_64_LARGE},
0112cd26
NC		 5006 { STRING_COMMA_LEN (".ldata"), -2, SHT_PROGBITS, SHF_ALLOC + SHF_WRITE + SHF_X86_64_LARGE},
5007 { STRING_COMMA_LEN (".lrodata"), -2, SHT_PROGBITS, SHF_ALLOC + SHF_X86_64_LARGE},
07d6d2b8 5008 { NULL, 0, 0, 0, 0 }
3b22753a
L		 5009};
5010
6d00b590 5011#define TARGET_LITTLE_SYM x86_64_elf64_vec
70256ad8
AJ		 5012#define TARGET_LITTLE_NAME "elf64-x86-64"
5013#define ELF_ARCH bfd_arch_i386
ae95ffa6 5014#define ELF_TARGET_ID X86_64_ELF_DATA
70256ad8 5015#define ELF_MACHINE_CODE EM_X86_64
f6aec96d
L		 5016#if DEFAULT_LD_Z_SEPARATE_CODE
5017# define ELF_MAXPAGESIZE 0x1000
5018#else
5019# define ELF_MAXPAGESIZE 0x200000
5020#endif
2043964e 5021#define ELF_MINPAGESIZE 0x1000
24718e3b 5022#define ELF_COMMONPAGESIZE 0x1000
70256ad8
AJ		 5023
5024#define elf_backend_can_gc_sections 1
51b64d56 5025#define elf_backend_can_refcount 1
70256ad8
AJ		 5026#define elf_backend_want_got_plt 1
5027#define elf_backend_plt_readonly 1
5028#define elf_backend_want_plt_sym 0
5029#define elf_backend_got_header_size (GOT_ENTRY_SIZE*3)
b491616a 5030#define elf_backend_rela_normal 1
07d6d2b8 5031#define elf_backend_plt_alignment 4
f7483970 5032#define elf_backend_extern_protected_data 1
bedfd056 5033#define elf_backend_caches_rawsize 1
64f52338 5034#define elf_backend_dtrel_excludes_plt 1
5474d94f 5035#define elf_backend_want_dynrelro 1
70256ad8 5036
351f65ca 5037#define elf_info_to_howto elf_x86_64_info_to_howto
70256ad8 5038
351f65ca 5039#define bfd_elf64_bfd_reloc_type_lookup elf_x86_64_reloc_type_lookup
157090f7 5040#define bfd_elf64_bfd_reloc_name_lookup \
351f65ca 5041 elf_x86_64_reloc_name_lookup
70256ad8 5042
c543bf9a 5043#define elf_backend_relocs_compatible elf_x86_64_relocs_compatible
351f65ca 5044#define elf_backend_check_relocs elf_x86_64_check_relocs
38b12349 5045#define elf_backend_create_dynamic_sections _bfd_elf_create_dynamic_sections
351f65ca
L		 5046#define elf_backend_finish_dynamic_sections elf_x86_64_finish_dynamic_sections
5047#define elf_backend_finish_dynamic_symbol elf_x86_64_finish_dynamic_symbol
233cc9c1 5048#define elf_backend_output_arch_local_syms elf_x86_64_output_arch_local_syms
351f65ca
L		 5049#define elf_backend_grok_prstatus elf_x86_64_grok_prstatus
5050#define elf_backend_grok_psinfo elf_x86_64_grok_psinfo
8fd79e71
L		 5051#ifdef CORE_HEADER
5052#define elf_backend_write_core_note elf_x86_64_write_core_note
5053#endif
351f65ca
L		 5054#define elf_backend_reloc_type_class elf_x86_64_reloc_type_class
5055#define elf_backend_relocate_section elf_x86_64_relocate_section
74541ad4 5056#define elf_backend_init_index_section _bfd_elf_init_1_index_section
407443a3 5057#define elf_backend_object_p elf64_x86_64_elf_object_p
0ff2b86e 5058#define bfd_elf64_get_synthetic_symtab elf_x86_64_get_synthetic_symtab
8d88c4ca 5059
d2b2c203 5060#define elf_backend_section_from_shdr \
351f65ca 5061 elf_x86_64_section_from_shdr
d2b2c203 5062
3b22753a 5063#define elf_backend_section_from_bfd_section \
351f65ca 5064 elf_x86_64_elf_section_from_bfd_section
3b22753a 5065#define elf_backend_add_symbol_hook \
351f65ca 5066 elf_x86_64_add_symbol_hook
3b22753a 5067#define elf_backend_symbol_processing \
351f65ca 5068 elf_x86_64_symbol_processing
3b22753a 5069#define elf_backend_common_section_index \
351f65ca 5070 elf_x86_64_common_section_index
3b22753a 5071#define elf_backend_common_section \
351f65ca 5072 elf_x86_64_common_section
3b22753a 5073#define elf_backend_common_definition \
351f65ca 5074 elf_x86_64_common_definition
3b22753a 5075#define elf_backend_merge_symbol \
351f65ca 5076 elf_x86_64_merge_symbol
3b22753a 5077#define elf_backend_special_sections \
351f65ca 5078 elf_x86_64_special_sections
3b22753a 5079#define elf_backend_additional_program_headers \
351f65ca 5080 elf_x86_64_additional_program_headers
38b12349 5081#define elf_backend_setup_gnu_properties \
9f857535
L		 5082 elf_x86_64_link_setup_gnu_properties
5083#define elf_backend_hide_symbol \
5084 _bfd_x86_elf_hide_symbol
3b22753a 5085
8f56f7a2
L		 5086#undef elf64_bed
5087#define elf64_bed elf64_x86_64_bed
5088
8d88c4ca 5089#include "elf64-target.h"
9d7cbccd 5090
6036f486
ES		 5091/* CloudABI support. */
5092
07d6d2b8 5093#undef TARGET_LITTLE_SYM
6036f486 5094#define TARGET_LITTLE_SYM x86_64_elf64_cloudabi_vec
07d6d2b8 5095#undef TARGET_LITTLE_NAME
6036f486
ES		 5096#define TARGET_LITTLE_NAME "elf64-x86-64-cloudabi"
5097
5098#undef ELF_OSABI
5099#define ELF_OSABI ELFOSABI_CLOUDABI
5100
07d6d2b8 5101#undef elf64_bed
6036f486
ES		 5102#define elf64_bed elf64_x86_64_cloudabi_bed
5103
5104#include "elf64-target.h"
5105
9d7cbccd
NC		 5106/* FreeBSD support. */
5107
07d6d2b8 5108#undef TARGET_LITTLE_SYM
6d00b590 5109#define TARGET_LITTLE_SYM x86_64_elf64_fbsd_vec
07d6d2b8 5110#undef TARGET_LITTLE_NAME
9d7cbccd
NC		 5111#define TARGET_LITTLE_NAME "elf64-x86-64-freebsd"
5112
d1036acb
L		 5113#undef ELF_OSABI
5114#define ELF_OSABI ELFOSABI_FREEBSD
9d7cbccd 5115
07d6d2b8 5116#undef elf64_bed
9d7cbccd
NC		 5117#define elf64_bed elf64_x86_64_fbsd_bed
5118
5119#include "elf64-target.h"
8a9036a4 5120
a6cc6b3b
RO		 5121/* Solaris 2 support. */
5122
5123#undef TARGET_LITTLE_SYM
6d00b590 5124#define TARGET_LITTLE_SYM x86_64_elf64_sol2_vec
a6cc6b3b
RO		 5125#undef TARGET_LITTLE_NAME
5126#define TARGET_LITTLE_NAME "elf64-x86-64-sol2"
5127
3b4c3844
L		 5128static const struct elf_x86_backend_data elf_x86_64_solaris_arch_bed =
5129 {
5130 is_solaris /* os */
5131 };
5132
5133#undef elf_backend_arch_data
5134#define elf_backend_arch_data &elf_x86_64_solaris_arch_bed
5135
a6cc6b3b
RO		 5136/* Restore default: we cannot use ELFOSABI_SOLARIS, otherwise ELFOSABI_NONE
5137 objects won't be recognized. */
5138#undef ELF_OSABI
5139
5140#undef elf64_bed
5141#define elf64_bed elf64_x86_64_sol2_bed
5142
7dc98aea
RO		 5143/* The 64-bit static TLS arena size is rounded to the nearest 16-byte
5144 boundary. */
84865015 5145#undef elf_backend_static_tls_alignment
7dc98aea
RO		 5146#define elf_backend_static_tls_alignment 16
5147
a6cc6b3b
RO		 5148/* The Solaris 2 ABI requires a plt symbol on all platforms.
5149
5150 Cf. Linker and Libraries Guide, Ch. 2, Link-Editor, Generating the Output
5151 File, p.63. */
84865015 5152#undef elf_backend_want_plt_sym
a6cc6b3b
RO		 5153#define elf_backend_want_plt_sym 1
5154
84865015
NC		 5155#undef elf_backend_strtab_flags
5156#define elf_backend_strtab_flags SHF_STRINGS
5157
5158static bfd_boolean
5522f910
NC		 5159elf64_x86_64_copy_solaris_special_section_fields (const bfd *ibfd ATTRIBUTE_UNUSED,
5160 bfd *obfd ATTRIBUTE_UNUSED,
5161 const Elf_Internal_Shdr *isection ATTRIBUTE_UNUSED,
5162 Elf_Internal_Shdr *osection ATTRIBUTE_UNUSED)
84865015
NC		 5163{
5164 /* PR 19938: FIXME: Need to add code for setting the sh_info
5165 and sh_link fields of Solaris specific section types. */
5166 return FALSE;
5167}
5168
5522f910
NC		 5169#undef elf_backend_copy_special_section_fields
5170#define elf_backend_copy_special_section_fields elf64_x86_64_copy_solaris_special_section_fields
84865015 5171
a6cc6b3b
RO		 5172#include "elf64-target.h"
5173
8059fb19
RM		 5174/* Native Client support. */
5175
64b384e1
RM		 5176static bfd_boolean
5177elf64_x86_64_nacl_elf_object_p (bfd *abfd)
5178{
5179 /* Set the right machine number for a NaCl x86-64 ELF64 file. */
5180 bfd_default_set_arch_mach (abfd, bfd_arch_i386, bfd_mach_x86_64_nacl);
5181 return TRUE;
5182}
5183
8059fb19 5184#undef TARGET_LITTLE_SYM
6d00b590 5185#define TARGET_LITTLE_SYM x86_64_elf64_nacl_vec
8059fb19
RM		 5186#undef TARGET_LITTLE_NAME
5187#define TARGET_LITTLE_NAME "elf64-x86-64-nacl"
5188#undef elf64_bed
5189#define elf64_bed elf64_x86_64_nacl_bed
5190
5191#undef ELF_MAXPAGESIZE
5192#undef ELF_MINPAGESIZE
5193#undef ELF_COMMONPAGESIZE
5194#define ELF_MAXPAGESIZE 0x10000
5195#define ELF_MINPAGESIZE 0x10000
5196#define ELF_COMMONPAGESIZE 0x10000
5197
5198/* Restore defaults. */
5199#undef ELF_OSABI
5200#undef elf_backend_static_tls_alignment
5201#undef elf_backend_want_plt_sym
5202#define elf_backend_want_plt_sym 0
84865015 5203#undef elf_backend_strtab_flags
5522f910 5204#undef elf_backend_copy_special_section_fields
8059fb19
RM		 5205
5206/* NaCl uses substantially different PLT entries for the same effects. */
5207
5208#undef elf_backend_plt_alignment
5209#define elf_backend_plt_alignment 5
5210#define NACL_PLT_ENTRY_SIZE 64
5211#define NACLMASK 0xe0 /* 32-byte alignment mask. */
5212
5213static const bfd_byte elf_x86_64_nacl_plt0_entry[NACL_PLT_ENTRY_SIZE] =
5214 {
07d6d2b8 5215 0xff, 0x35, 8, 0, 0, 0, /* pushq GOT+8(%rip) */
8059fb19 5216 0x4c, 0x8b, 0x1d, 16, 0, 0, 0, /* mov GOT+16(%rip), %r11 */
07d6d2b8
AM		 5217 0x41, 0x83, 0xe3, NACLMASK, /* and $-32, %r11d */
5218 0x4d, 0x01, 0xfb, /* add %r15, %r11 */
5219 0x41, 0xff, 0xe3, /* jmpq *%r11 */
8059fb19 5220
ea2d813e 5221 /* 9-byte nop sequence to pad out to the next 32-byte boundary. */
70cc877f 5222 0x66, 0x0f, 0x1f, 0x84, 0, 0, 0, 0, 0, /* nopw 0x0(%rax,%rax,1) */
ea2d813e
RM		 5223
5224 /* 32 bytes of nop to pad out to the standard size. */
3ddf1bdd 5225 0x66, 0x66, 0x66, 0x66, 0x66, 0x66, /* excess data16 prefixes */
8059fb19 5226 0x2e, 0x0f, 0x1f, 0x84, 0, 0, 0, 0, 0, /* nopw %cs:0x0(%rax,%rax,1) */
3ddf1bdd 5227 0x66, 0x66, 0x66, 0x66, 0x66, 0x66, /* excess data16 prefixes */
8059fb19 5228 0x2e, 0x0f, 0x1f, 0x84, 0, 0, 0, 0, 0, /* nopw %cs:0x0(%rax,%rax,1) */
07d6d2b8
AM		 5229 0x66, /* excess data16 prefix */
5230 0x90 /* nop */
8059fb19
RM		 5231 };
5232
5233static const bfd_byte elf_x86_64_nacl_plt_entry[NACL_PLT_ENTRY_SIZE] =
5234 {
5235 0x4c, 0x8b, 0x1d, 0, 0, 0, 0, /* mov name@GOTPCREL(%rip),%r11 */
07d6d2b8
AM		 5236 0x41, 0x83, 0xe3, NACLMASK, /* and $-32, %r11d */
5237 0x4d, 0x01, 0xfb, /* add %r15, %r11 */
5238 0x41, 0xff, 0xe3, /* jmpq *%r11 */
8059fb19
RM		 5239
5240 /* 15-byte nop sequence to pad out to the next 32-byte boundary. */
3ddf1bdd 5241 0x66, 0x66, 0x66, 0x66, 0x66, 0x66, /* excess data16 prefixes */
8059fb19
RM		 5242 0x2e, 0x0f, 0x1f, 0x84, 0, 0, 0, 0, 0, /* nopw %cs:0x0(%rax,%rax,1) */
5243
5244 /* Lazy GOT entries point here (32-byte aligned). */
07d6d2b8
AM		 5245 0x68, /* pushq immediate */
5246 0, 0, 0, 0, /* replaced with index into relocation table. */
5247 0xe9, /* jmp relative */
5248 0, 0, 0, 0, /* replaced with offset to start of .plt0. */
8059fb19 5249
07d6d2b8 5250 /* 22 bytes of nop to pad out to the standard size. */
3ddf1bdd 5251 0x66, 0x66, 0x66, 0x66, 0x66, 0x66, /* excess data16 prefixes */
8059fb19 5252 0x2e, 0x0f, 0x1f, 0x84, 0, 0, 0, 0, 0, /* nopw %cs:0x0(%rax,%rax,1) */
07d6d2b8 5253 0x0f, 0x1f, 0x80, 0, 0, 0, 0, /* nopl 0x0(%rax) */
8059fb19
RM		 5254 };
5255
5256/* .eh_frame covering the .plt section. */
5257
5258static const bfd_byte elf_x86_64_nacl_eh_frame_plt[] =
5259 {
07d6d2b8
AM		 5260#if (PLT_CIE_LENGTH != 20 \
5261 || PLT_FDE_LENGTH != 36 \
5262 || PLT_FDE_START_OFFSET != 4 + PLT_CIE_LENGTH + 8 \
8059fb19 5263 || PLT_FDE_LEN_OFFSET != 4 + PLT_CIE_LENGTH + 12)
851b6fa1 5264# error "Need elf_x86_backend_data parameters for eh_frame_plt offsets!"
8059fb19
RM		 5265#endif
5266 PLT_CIE_LENGTH, 0, 0, 0, /* CIE length */
5267 0, 0, 0, 0, /* CIE ID */
5268 1, /* CIE version */
07d6d2b8 5269 'z', 'R', 0, /* Augmentation string */
8059fb19 5270 1, /* Code alignment factor */
07d6d2b8 5271 0x78, /* Data alignment factor */
8059fb19
RM		 5272 16, /* Return address column */
5273 1, /* Augmentation size */
5274 DW_EH_PE_pcrel | DW_EH_PE_sdata4, /* FDE encoding */
5275 DW_CFA_def_cfa, 7, 8, /* DW_CFA_def_cfa: r7 (rsp) ofs 8 */
5276 DW_CFA_offset + 16, 1, /* DW_CFA_offset: r16 (rip) at cfa-8 */
5277 DW_CFA_nop, DW_CFA_nop,
5278
5279 PLT_FDE_LENGTH, 0, 0, 0, /* FDE length */
5280 PLT_CIE_LENGTH + 8, 0, 0, 0,/* CIE pointer */
5281 0, 0, 0, 0, /* R_X86_64_PC32 .plt goes here */
5282 0, 0, 0, 0, /* .plt size goes here */
5283 0, /* Augmentation size */
5284 DW_CFA_def_cfa_offset, 16, /* DW_CFA_def_cfa_offset: 16 */
5285 DW_CFA_advance_loc + 6, /* DW_CFA_advance_loc: 6 to __PLT__+6 */
5286 DW_CFA_def_cfa_offset, 24, /* DW_CFA_def_cfa_offset: 24 */
5287 DW_CFA_advance_loc + 58, /* DW_CFA_advance_loc: 58 to __PLT__+64 */
5288 DW_CFA_def_cfa_expression, /* DW_CFA_def_cfa_expression */
5289 13, /* Block length */
5290 DW_OP_breg7, 8, /* DW_OP_breg7 (rsp): 8 */
5291 DW_OP_breg16, 0, /* DW_OP_breg16 (rip): 0 */
5292 DW_OP_const1u, 63, DW_OP_and, DW_OP_const1u, 37, DW_OP_ge,
5293 DW_OP_lit3, DW_OP_shl, DW_OP_plus,
5294 DW_CFA_nop, DW_CFA_nop
5295 };
5296
765e526c 5297static const struct elf_x86_lazy_plt_layout elf_x86_64_nacl_plt =
8059fb19 5298 {
07d6d2b8
AM		 5299 elf_x86_64_nacl_plt0_entry, /* plt0_entry */
5300 NACL_PLT_ENTRY_SIZE, /* plt0_entry_size */
5301 elf_x86_64_nacl_plt_entry, /* plt_entry */
5302 NACL_PLT_ENTRY_SIZE, /* plt_entry_size */
92e68c1d
L		 5303 elf_x86_64_nacl_plt0_entry, /* plt_tlsdesc_entry */
5304 NACL_PLT_ENTRY_SIZE, /* plt_tlsdesc_entry_size */
5305 2, /* plt_tlsdesc_got1_offset */
5306 9, /* plt_tlsdesc_got2_offset */
5307 6, /* plt_tlsdesc_got1_insn_end */
5308 13, /* plt_tlsdesc_got2_insn_end */
07d6d2b8
AM		 5309 2, /* plt0_got1_offset */
5310 9, /* plt0_got2_offset */
5311 13, /* plt0_got2_insn_end */
5312 3, /* plt_got_offset */
5313 33, /* plt_reloc_offset */
5314 38, /* plt_plt_offset */
5315 7, /* plt_got_insn_size */
5316 42, /* plt_plt_insn_end */
5317 32, /* plt_lazy_offset */
5318 elf_x86_64_nacl_plt0_entry, /* pic_plt0_entry */
5319 elf_x86_64_nacl_plt_entry, /* pic_plt_entry */
5320 elf_x86_64_nacl_eh_frame_plt, /* eh_frame_plt */
38b12349
L		 5321 sizeof (elf_x86_64_nacl_eh_frame_plt) /* eh_frame_plt_size */
5322 };
5323
851b6fa1 5324static const struct elf_x86_backend_data elf_x86_64_nacl_arch_bed =
38b12349 5325 {
07d6d2b8 5326 is_nacl /* os */
8059fb19
RM		 5327 };
5328
5329#undef elf_backend_arch_data
5330#define elf_backend_arch_data &elf_x86_64_nacl_arch_bed
5331
64b384e1
RM		 5332#undef elf_backend_object_p
5333#define elf_backend_object_p elf64_x86_64_nacl_elf_object_p
5a68afcf
RM		 5334#undef elf_backend_modify_segment_map
5335#define elf_backend_modify_segment_map nacl_modify_segment_map
5336#undef elf_backend_modify_program_headers
5337#define elf_backend_modify_program_headers nacl_modify_program_headers
887badb3
RM		 5338#undef elf_backend_final_write_processing
5339#define elf_backend_final_write_processing nacl_final_write_processing
5a68afcf 5340
8059fb19
RM		 5341#include "elf64-target.h"
5342
5343/* Native Client x32 support. */
5344
64b384e1
RM		 5345static bfd_boolean
5346elf32_x86_64_nacl_elf_object_p (bfd *abfd)
5347{
5348 /* Set the right machine number for a NaCl x86-64 ELF32 file. */
5349 bfd_default_set_arch_mach (abfd, bfd_arch_i386, bfd_mach_x64_32_nacl);
5350 return TRUE;
5351}
5352
07d6d2b8 5353#undef TARGET_LITTLE_SYM
6d00b590 5354#define TARGET_LITTLE_SYM x86_64_elf32_nacl_vec
07d6d2b8 5355#undef TARGET_LITTLE_NAME
8059fb19
RM		 5356#define TARGET_LITTLE_NAME "elf32-x86-64-nacl"
5357#undef elf32_bed
5358#define elf32_bed elf32_x86_64_nacl_bed
5359
8059fb19
RM		 5360#define bfd_elf32_bfd_reloc_type_lookup \
5361 elf_x86_64_reloc_type_lookup
5362#define bfd_elf32_bfd_reloc_name_lookup \
5363 elf_x86_64_reloc_name_lookup
b7365e5d
L		 5364#define bfd_elf32_get_synthetic_symtab \
5365 elf_x86_64_get_synthetic_symtab
8059fb19
RM		 5366
5367#undef elf_backend_object_p
5368#define elf_backend_object_p \
64b384e1 5369 elf32_x86_64_nacl_elf_object_p
8059fb19
RM		 5370
5371#undef elf_backend_bfd_from_remote_memory
5372#define elf_backend_bfd_from_remote_memory \
5373 _bfd_elf32_bfd_from_remote_memory
5374
5375#undef elf_backend_size_info
5376#define elf_backend_size_info \
5377 _bfd_elf32_size_info
5378
8f56f7a2
L		 5379#undef elf32_bed
5380#define elf32_bed elf32_x86_64_bed
5381
8059fb19
RM		 5382#include "elf32-target.h"
5383
5384/* Restore defaults. */
5a68afcf 5385#undef elf_backend_object_p
8059fb19 5386#define elf_backend_object_p elf64_x86_64_elf_object_p
5a68afcf
RM		 5387#undef elf_backend_bfd_from_remote_memory
5388#undef elf_backend_size_info
5389#undef elf_backend_modify_segment_map
5390#undef elf_backend_modify_program_headers
887badb3 5391#undef elf_backend_final_write_processing
8059fb19 5392
8a9036a4
L		 5393/* Intel L1OM support. */
5394
5395static bfd_boolean
5396elf64_l1om_elf_object_p (bfd *abfd)
5397{
5398 /* Set the right machine number for an L1OM elf64 file. */
5399 bfd_default_set_arch_mach (abfd, bfd_arch_l1om, bfd_mach_l1om);
5400 return TRUE;
5401}
5402
5403#undef TARGET_LITTLE_SYM
6d00b590 5404#define TARGET_LITTLE_SYM l1om_elf64_vec
8a9036a4
L		 5405#undef TARGET_LITTLE_NAME
5406#define TARGET_LITTLE_NAME "elf64-l1om"
5407#undef ELF_ARCH
5408#define ELF_ARCH bfd_arch_l1om
5409
5410#undef ELF_MACHINE_CODE
5411#define ELF_MACHINE_CODE EM_L1OM
5412
5413#undef ELF_OSABI
5414
5415#undef elf64_bed
5416#define elf64_bed elf64_l1om_bed
5417
5418#undef elf_backend_object_p
5419#define elf_backend_object_p elf64_l1om_elf_object_p
5420
8059fb19
RM		 5421/* Restore defaults. */
5422#undef ELF_MAXPAGESIZE
5423#undef ELF_MINPAGESIZE
5424#undef ELF_COMMONPAGESIZE
f6aec96d
L		 5425#if DEFAULT_LD_Z_SEPARATE_CODE
5426# define ELF_MAXPAGESIZE 0x1000
5427#else
5428# define ELF_MAXPAGESIZE 0x200000
5429#endif
8059fb19
RM		 5430#define ELF_MINPAGESIZE 0x1000
5431#define ELF_COMMONPAGESIZE 0x1000
5432#undef elf_backend_plt_alignment
5433#define elf_backend_plt_alignment 4
5434#undef elf_backend_arch_data
5435#define elf_backend_arch_data &elf_x86_64_arch_bed
1a0c107f 5436
8a9036a4
L		 5437#include "elf64-target.h"
5438
5439/* FreeBSD L1OM support. */
5440
5441#undef TARGET_LITTLE_SYM
6d00b590 5442#define TARGET_LITTLE_SYM l1om_elf64_fbsd_vec
8a9036a4
L		 5443#undef TARGET_LITTLE_NAME
5444#define TARGET_LITTLE_NAME "elf64-l1om-freebsd"
5445
5446#undef ELF_OSABI
5447#define ELF_OSABI ELFOSABI_FREEBSD
5448
5449#undef elf64_bed
5450#define elf64_bed elf64_l1om_fbsd_bed
5451
8a9036a4 5452#include "elf64-target.h"
351f65ca 5453
7a9068fe
L		 5454/* Intel K1OM support. */
5455
5456static bfd_boolean
5457elf64_k1om_elf_object_p (bfd *abfd)
5458{
5459 /* Set the right machine number for an K1OM elf64 file. */
5460 bfd_default_set_arch_mach (abfd, bfd_arch_k1om, bfd_mach_k1om);
5461 return TRUE;
5462}
5463
5464#undef TARGET_LITTLE_SYM
6d00b590 5465#define TARGET_LITTLE_SYM k1om_elf64_vec
7a9068fe
L		 5466#undef TARGET_LITTLE_NAME
5467#define TARGET_LITTLE_NAME "elf64-k1om"
5468#undef ELF_ARCH
5469#define ELF_ARCH bfd_arch_k1om
5470
5471#undef ELF_MACHINE_CODE
5472#define ELF_MACHINE_CODE EM_K1OM
5473
5474#undef ELF_OSABI
5475
5476#undef elf64_bed
5477#define elf64_bed elf64_k1om_bed
5478
5479#undef elf_backend_object_p
5480#define elf_backend_object_p elf64_k1om_elf_object_p
5481
5482#undef elf_backend_static_tls_alignment
5483
5484#undef elf_backend_want_plt_sym
5485#define elf_backend_want_plt_sym 0
5486
5487#include "elf64-target.h"
5488
5489/* FreeBSD K1OM support. */
5490
5491#undef TARGET_LITTLE_SYM
6d00b590 5492#define TARGET_LITTLE_SYM k1om_elf64_fbsd_vec
7a9068fe
L		 5493#undef TARGET_LITTLE_NAME
5494#define TARGET_LITTLE_NAME "elf64-k1om-freebsd"
5495
5496#undef ELF_OSABI
5497#define ELF_OSABI ELFOSABI_FREEBSD
5498
5499#undef elf64_bed
5500#define elf64_bed elf64_k1om_fbsd_bed
5501
5502#include "elf64-target.h"
5503
351f65ca
L		 5504/* 32bit x86-64 support. */
5505
351f65ca 5506#undef TARGET_LITTLE_SYM
6d00b590 5507#define TARGET_LITTLE_SYM x86_64_elf32_vec
351f65ca
L		 5508#undef TARGET_LITTLE_NAME
5509#define TARGET_LITTLE_NAME "elf32-x86-64"
8059fb19 5510#undef elf32_bed
351f65ca
L		 5511
5512#undef ELF_ARCH
5513#define ELF_ARCH bfd_arch_i386
5514
5515#undef ELF_MACHINE_CODE
5516#define ELF_MACHINE_CODE EM_X86_64
5517
351f65ca
L		 5518#undef ELF_OSABI
5519
351f65ca
L		 5520#undef elf_backend_object_p
5521#define elf_backend_object_p \
5522 elf32_x86_64_elf_object_p
5523
5524#undef elf_backend_bfd_from_remote_memory
5525#define elf_backend_bfd_from_remote_memory \
5526 _bfd_elf32_bfd_from_remote_memory
5527
5528#undef elf_backend_size_info
5529#define elf_backend_size_info \
5530 _bfd_elf32_size_info
5531
5532#include "elf32-target.h"
GDB Binutils - Deliverables
This page took 2.131528 seconds and 4 git commands to generate.