projects / deliverable / binutils-gdb.git / blame
? search:
summary | shortlog | log | commit | commitdiff | tree
blob | blame (incremental) | history | HEAD
x86: Add GENERATE_RELATIVE_RELOC_P
[deliverable/binutils-gdb.git] / bfd / elf64-x86-64.c
CommitLineData
351f65ca 1/* X86-64 specific support for ELF
2571583a 2 Copyright (C) 2000-2017 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
8d88c4ca 209/* Map BFD relocs to the x86_64 elf relocs. */
70256ad8
AJ		 210struct elf_reloc_map
211{
8d88c4ca
NC		 212 bfd_reloc_code_real_type bfd_reloc_val;
213 unsigned char elf_reloc_val;
214};
215
dc810e39 216static const struct elf_reloc_map x86_64_reloc_map[] =
8d88c4ca 217{
70256ad8
AJ		 218 { BFD_RELOC_NONE, R_X86_64_NONE, },
219 { BFD_RELOC_64, R_X86_64_64, },
220 { BFD_RELOC_32_PCREL, R_X86_64_PC32, },
221 { BFD_RELOC_X86_64_GOT32, R_X86_64_GOT32,},
222 { BFD_RELOC_X86_64_PLT32, R_X86_64_PLT32,},
223 { BFD_RELOC_X86_64_COPY, R_X86_64_COPY, },
224 { BFD_RELOC_X86_64_GLOB_DAT, R_X86_64_GLOB_DAT, },
225 { BFD_RELOC_X86_64_JUMP_SLOT, R_X86_64_JUMP_SLOT, },
226 { BFD_RELOC_X86_64_RELATIVE, R_X86_64_RELATIVE, },
227 { BFD_RELOC_X86_64_GOTPCREL, R_X86_64_GOTPCREL, },
228 { BFD_RELOC_32, R_X86_64_32, },
229 { BFD_RELOC_X86_64_32S, R_X86_64_32S, },
230 { BFD_RELOC_16, R_X86_64_16, },
231 { BFD_RELOC_16_PCREL, R_X86_64_PC16, },
232 { BFD_RELOC_8, R_X86_64_8, },
233 { BFD_RELOC_8_PCREL, R_X86_64_PC8, },
bffbf940
JJ		 234 { BFD_RELOC_X86_64_DTPMOD64, R_X86_64_DTPMOD64, },
235 { BFD_RELOC_X86_64_DTPOFF64, R_X86_64_DTPOFF64, },
236 { BFD_RELOC_X86_64_TPOFF64, R_X86_64_TPOFF64, },
237 { BFD_RELOC_X86_64_TLSGD, R_X86_64_TLSGD, },
238 { BFD_RELOC_X86_64_TLSLD, R_X86_64_TLSLD, },
239 { BFD_RELOC_X86_64_DTPOFF32, R_X86_64_DTPOFF32, },
240 { BFD_RELOC_X86_64_GOTTPOFF, R_X86_64_GOTTPOFF, },
241 { BFD_RELOC_X86_64_TPOFF32, R_X86_64_TPOFF32, },
d6ab8113
JB		 242 { BFD_RELOC_64_PCREL, R_X86_64_PC64, },
243 { BFD_RELOC_X86_64_GOTOFF64, R_X86_64_GOTOFF64, },
244 { BFD_RELOC_X86_64_GOTPC32, R_X86_64_GOTPC32, },
7b81dfbb
AJ		 245 { BFD_RELOC_X86_64_GOT64, R_X86_64_GOT64, },
246 { BFD_RELOC_X86_64_GOTPCREL64,R_X86_64_GOTPCREL64, },
247 { BFD_RELOC_X86_64_GOTPC64, R_X86_64_GOTPC64, },
248 { BFD_RELOC_X86_64_GOTPLT64, R_X86_64_GOTPLT64, },
249 { BFD_RELOC_X86_64_PLTOFF64, R_X86_64_PLTOFF64, },
1788fc08
L		 250 { BFD_RELOC_SIZE32, R_X86_64_SIZE32, },
251 { BFD_RELOC_SIZE64, R_X86_64_SIZE64, },
67a4f2b7
AO		 252 { BFD_RELOC_X86_64_GOTPC32_TLSDESC, R_X86_64_GOTPC32_TLSDESC, },
253 { BFD_RELOC_X86_64_TLSDESC_CALL, R_X86_64_TLSDESC_CALL, },
254 { BFD_RELOC_X86_64_TLSDESC, R_X86_64_TLSDESC, },
cbe950e9 255 { BFD_RELOC_X86_64_IRELATIVE, R_X86_64_IRELATIVE, },
56ceb5b5
L		 256 { BFD_RELOC_X86_64_PC32_BND, R_X86_64_PC32_BND, },
257 { BFD_RELOC_X86_64_PLT32_BND, R_X86_64_PLT32_BND, },
258 { BFD_RELOC_X86_64_GOTPCRELX, R_X86_64_GOTPCRELX, },
259 { BFD_RELOC_X86_64_REX_GOTPCRELX, R_X86_64_REX_GOTPCRELX, },
fe4770f4
AJ		 260 { BFD_RELOC_VTABLE_INHERIT, R_X86_64_GNU_VTINHERIT, },
261 { BFD_RELOC_VTABLE_ENTRY, R_X86_64_GNU_VTENTRY, },
8d88c4ca
NC		 262};
263
67a4f2b7 264static reloc_howto_type *
351f65ca 265elf_x86_64_rtype_to_howto (bfd *abfd, unsigned r_type)
67a4f2b7
AO		 266{
267 unsigned i;
268
d7921315
L		 269 if (r_type == (unsigned int) R_X86_64_32)
270 {
271 if (ABI_64_P (abfd))
272 i = r_type;
273 else
274 i = ARRAY_SIZE (x86_64_elf_howto_table) - 1;
275 }
276 else if (r_type < (unsigned int) R_X86_64_GNU_VTINHERIT
277 || r_type >= (unsigned int) R_X86_64_max)
67a4f2b7
AO		 278 {
279 if (r_type >= (unsigned int) R_X86_64_standard)
280 {
695344c0 281 /* xgettext:c-format */
4eca0228
AM		 282 _bfd_error_handler (_("%B: invalid relocation type %d"),
283 abfd, (int) r_type);
67a4f2b7
AO		 284 r_type = R_X86_64_NONE;
285 }
286 i = r_type;
287 }
288 else
289 i = r_type - (unsigned int) R_X86_64_vt_offset;
290 BFD_ASSERT (x86_64_elf_howto_table[i].type == r_type);
291 return &x86_64_elf_howto_table[i];
292}
8d88c4ca
NC		 293
294/* Given a BFD reloc type, return a HOWTO structure. */
295static reloc_howto_type *
351f65ca
L		 296elf_x86_64_reloc_type_lookup (bfd *abfd,
297 bfd_reloc_code_real_type code)
8d88c4ca
NC		 298{
299 unsigned int i;
27482721 300
8d88c4ca
NC		 301 for (i = 0; i < sizeof (x86_64_reloc_map) / sizeof (struct elf_reloc_map);
302 i++)
303 {
304 if (x86_64_reloc_map[i].bfd_reloc_val == code)
351f65ca
L		 305 return elf_x86_64_rtype_to_howto (abfd,
306 x86_64_reloc_map[i].elf_reloc_val);
8d88c4ca 307 }
5860e3f8 308 return NULL;
8d88c4ca
NC		 309}
310
157090f7 311static reloc_howto_type *
d7921315 312elf_x86_64_reloc_name_lookup (bfd *abfd,
351f65ca 313 const char *r_name)
157090f7
AM		 314{
315 unsigned int i;
316
d7921315
L		 317 if (!ABI_64_P (abfd) && strcasecmp (r_name, "R_X86_64_32") == 0)
318 {
319 /* Get x32 R_X86_64_32. */
320 reloc_howto_type *reloc
321 = &x86_64_elf_howto_table[ARRAY_SIZE (x86_64_elf_howto_table) - 1];
322 BFD_ASSERT (reloc->type == (unsigned int) R_X86_64_32);
323 return reloc;
324 }
325
326 for (i = 0; i < ARRAY_SIZE (x86_64_elf_howto_table); i++)
157090f7
AM		 327 if (x86_64_elf_howto_table[i].name != NULL
328 && strcasecmp (x86_64_elf_howto_table[i].name, r_name) == 0)
329 return &x86_64_elf_howto_table[i];
330
331 return NULL;
332}
333
8d88c4ca 334/* Given an x86_64 ELF reloc type, fill in an arelent structure. */
8da6118f 335
8d88c4ca 336static void
351f65ca
L		 337elf_x86_64_info_to_howto (bfd *abfd ATTRIBUTE_UNUSED, arelent *cache_ptr,
338 Elf_Internal_Rela *dst)
8d88c4ca 339{
67a4f2b7 340 unsigned r_type;
8d88c4ca 341
351f65ca 342 r_type = ELF32_R_TYPE (dst->r_info);
78984959
L		 343 if (r_type != (unsigned int) R_X86_64_GNU_VTINHERIT
344 && r_type != (unsigned int) R_X86_64_GNU_VTENTRY)
345 r_type &= ~R_X86_64_converted_reloc_bit;
351f65ca 346 cache_ptr->howto = elf_x86_64_rtype_to_howto (abfd, r_type);
262c0a87
NC		 347
348 BFD_ASSERT (r_type == cache_ptr->howto->type || cache_ptr->howto->type == R_X86_64_NONE);
8d88c4ca 349}
70256ad8 350\f
3bab7989 351/* Support for core dump NOTE sections. */
b34976b6 352static bfd_boolean
351f65ca 353elf_x86_64_grok_prstatus (bfd *abfd, Elf_Internal_Note *note)
3bab7989
ML		 354{
355 int offset;
eea6121a 356 size_t size;
3bab7989
ML		 357
358 switch (note->descsz)
359 {
360 default:
b34976b6 361 return FALSE;
3bab7989 362
bcd823f1
L		 363 case 296: /* sizeof(istruct elf_prstatus) on Linux/x32 */
364 /* pr_cursig */
228e534f 365 elf_tdata (abfd)->core->signal = bfd_get_16 (abfd, note->descdata + 12);
bcd823f1
L		 366
367 /* pr_pid */
228e534f 368 elf_tdata (abfd)->core->lwpid = bfd_get_32 (abfd, note->descdata + 24);
bcd823f1
L		 369
370 /* pr_reg */
371 offset = 72;
372 size = 216;
373
374 break;
375
3bab7989
ML		 376 case 336: /* sizeof(istruct elf_prstatus) on Linux/x86_64 */
377 /* pr_cursig */
228e534f 378 elf_tdata (abfd)->core->signal
3bab7989
ML		 379 = bfd_get_16 (abfd, note->descdata + 12);
380
381 /* pr_pid */
228e534f 382 elf_tdata (abfd)->core->lwpid
3bab7989
ML		 383 = bfd_get_32 (abfd, note->descdata + 32);
384
385 /* pr_reg */
386 offset = 112;
eea6121a 387 size = 216;
3bab7989
ML		 388
389 break;
390 }
391
392 /* Make a ".reg/999" section. */
393 return _bfd_elfcore_make_pseudosection (abfd, ".reg",
eea6121a 394 size, note->descpos + offset);
3bab7989
ML		 395}
396
b34976b6 397static bfd_boolean
351f65ca 398elf_x86_64_grok_psinfo (bfd *abfd, Elf_Internal_Note *note)
3bab7989
ML		 399{
400 switch (note->descsz)
401 {
402 default:
b34976b6 403 return FALSE;
3bab7989 404
bcd823f1 405 case 124: /* sizeof(struct elf_prpsinfo) on Linux/x32 */
228e534f 406 elf_tdata (abfd)->core->pid
bcd823f1 407 = bfd_get_32 (abfd, note->descdata + 12);
228e534f 408 elf_tdata (abfd)->core->program
bcd823f1 409 = _bfd_elfcore_strndup (abfd, note->descdata + 28, 16);
228e534f 410 elf_tdata (abfd)->core->command
bcd823f1
L		 411 = _bfd_elfcore_strndup (abfd, note->descdata + 44, 80);
412 break;
413
3bab7989 414 case 136: /* sizeof(struct elf_prpsinfo) on Linux/x86_64 */
228e534f 415 elf_tdata (abfd)->core->pid
261b8d08 416 = bfd_get_32 (abfd, note->descdata + 24);
228e534f 417 elf_tdata (abfd)->core->program
3bab7989 418 = _bfd_elfcore_strndup (abfd, note->descdata + 40, 16);
228e534f 419 elf_tdata (abfd)->core->command
3bab7989
ML		 420 = _bfd_elfcore_strndup (abfd, note->descdata + 56, 80);
421 }
422
423 /* Note that for some reason, a spurious space is tacked
424 onto the end of the args in some (at least one anyway)
425 implementations, so strip it off if it exists. */
426
427 {
228e534f 428 char *command = elf_tdata (abfd)->core->command;
3bab7989
ML		 429 int n = strlen (command);
430
431 if (0 < n && command[n - 1] == ' ')
432 command[n - 1] = '\0';
433 }
434
b34976b6 435 return TRUE;
3bab7989 436}
8fd79e71
L		 437
438#ifdef CORE_HEADER
439static char *
440elf_x86_64_write_core_note (bfd *abfd, char *buf, int *bufsiz,
441 int note_type, ...)
442{
443 const struct elf_backend_data *bed = get_elf_backend_data (abfd);
8fd79e71
L		 444 va_list ap;
445 const char *fname, *psargs;
446 long pid;
447 int cursig;
448 const void *gregs;
449
450 switch (note_type)
451 {
452 default:
453 return NULL;
454
455 case NT_PRPSINFO:
456 va_start (ap, note_type);
457 fname = va_arg (ap, const char *);
458 psargs = va_arg (ap, const char *);
459 va_end (ap);
460
461 if (bed->s->elfclass == ELFCLASS32)
462 {
463 prpsinfo32_t data;
464 memset (&data, 0, sizeof (data));
465 strncpy (data.pr_fname, fname, sizeof (data.pr_fname));
466 strncpy (data.pr_psargs, psargs, sizeof (data.pr_psargs));
e85c6a70
JK		 467 return elfcore_write_note (abfd, buf, bufsiz, "CORE", note_type,
468 &data, sizeof (data));
8fd79e71
L		 469 }
470 else
471 {
b1bd052d 472 prpsinfo64_t data;
8fd79e71
L		 473 memset (&data, 0, sizeof (data));
474 strncpy (data.pr_fname, fname, sizeof (data.pr_fname));
475 strncpy (data.pr_psargs, psargs, sizeof (data.pr_psargs));
e85c6a70
JK		 476 return elfcore_write_note (abfd, buf, bufsiz, "CORE", note_type,
477 &data, sizeof (data));
8fd79e71 478 }
e85c6a70 479 /* NOTREACHED */
8fd79e71
L		 480
481 case NT_PRSTATUS:
482 va_start (ap, note_type);
483 pid = va_arg (ap, long);
484 cursig = va_arg (ap, int);
485 gregs = va_arg (ap, const void *);
486 va_end (ap);
487
488 if (bed->s->elfclass == ELFCLASS32)
489 {
490 if (bed->elf_machine_code == EM_X86_64)
491 {
492 prstatusx32_t prstat;
493 memset (&prstat, 0, sizeof (prstat));
494 prstat.pr_pid = pid;
495 prstat.pr_cursig = cursig;
496 memcpy (&prstat.pr_reg, gregs, sizeof (prstat.pr_reg));
e85c6a70
JK		 497 return elfcore_write_note (abfd, buf, bufsiz, "CORE", note_type,
498 &prstat, sizeof (prstat));
8fd79e71
L		 499 }
500 else
501 {
502 prstatus32_t prstat;
503 memset (&prstat, 0, sizeof (prstat));
504 prstat.pr_pid = pid;
505 prstat.pr_cursig = cursig;
506 memcpy (&prstat.pr_reg, gregs, sizeof (prstat.pr_reg));
e85c6a70
JK		 507 return elfcore_write_note (abfd, buf, bufsiz, "CORE", note_type,
508 &prstat, sizeof (prstat));
8fd79e71
L		 509 }
510 }
511 else
512 {
b1bd052d 513 prstatus64_t prstat;
8fd79e71
L		 514 memset (&prstat, 0, sizeof (prstat));
515 prstat.pr_pid = pid;
516 prstat.pr_cursig = cursig;
517 memcpy (&prstat.pr_reg, gregs, sizeof (prstat.pr_reg));
e85c6a70
JK		 518 return elfcore_write_note (abfd, buf, bufsiz, "CORE", note_type,
519 &prstat, sizeof (prstat));
8fd79e71 520 }
8fd79e71 521 }
e85c6a70 522 /* NOTREACHED */
8fd79e71
L		 523}
524#endif
3bab7989 525\f
407443a3 526/* Functions for the x86-64 ELF linker. */
70256ad8 527
70256ad8
AJ		 528/* The size in bytes of an entry in the global offset table. */
529
530#define GOT_ENTRY_SIZE 8
8d88c4ca 531
38b12349 532/* The size in bytes of an entry in the lazy procedure linkage table. */
8d88c4ca 533
38b12349 534#define LAZY_PLT_ENTRY_SIZE 16
70256ad8 535
38b12349
L		 536/* The size in bytes of an entry in the non-lazy procedure linkage
537 table. */
70256ad8 538
38b12349
L		 539#define NON_LAZY_PLT_ENTRY_SIZE 8
540
541/* The first entry in a lazy procedure linkage table looks like this.
542 See the SVR4 ABI i386 supplement and the x86-64 ABI to see how this
543 works. */
544
545static const bfd_byte elf_x86_64_lazy_plt0_entry[LAZY_PLT_ENTRY_SIZE] =
70256ad8 546{
653165cc
AJ		 547 0xff, 0x35, 8, 0, 0, 0, /* pushq GOT+8(%rip) */
548 0xff, 0x25, 16, 0, 0, 0, /* jmpq *GOT+16(%rip) */
10efb593 549 0x0f, 0x1f, 0x40, 0x00 /* nopl 0(%rax) */
70256ad8
AJ		 550};
551
38b12349 552/* Subsequent entries in a lazy procedure linkage table look like this. */
70256ad8 553
38b12349 554static const bfd_byte elf_x86_64_lazy_plt_entry[LAZY_PLT_ENTRY_SIZE] =
70256ad8 555{
653165cc 556 0xff, 0x25, /* jmpq *name@GOTPC(%rip) */
407443a3 557 0, 0, 0, 0, /* replaced with offset to this symbol in .got. */
653165cc 558 0x68, /* pushq immediate */
70256ad8
AJ		 559 0, 0, 0, 0, /* replaced with index into relocation table. */
560 0xe9, /* jmp relative */
561 0, 0, 0, 0 /* replaced with offset to start of .plt0. */
562};
563
38b12349 564/* The first entry in a lazy procedure linkage table with BND prefix
0ff2b86e
L		 565 like this. */
566
38b12349 567static const bfd_byte elf_x86_64_lazy_bnd_plt0_entry[LAZY_PLT_ENTRY_SIZE] =
0ff2b86e
L		 568{
569 0xff, 0x35, 8, 0, 0, 0, /* pushq GOT+8(%rip) */
570 0xf2, 0xff, 0x25, 16, 0, 0, 0, /* bnd jmpq *GOT+16(%rip) */
571 0x0f, 0x1f, 0 /* nopl (%rax) */
572};
573
38b12349
L		 574/* Subsequent entries for branches with BND prefx in a lazy procedure
575 linkage table look like this. */
0ff2b86e 576
38b12349 577static const bfd_byte elf_x86_64_lazy_bnd_plt_entry[LAZY_PLT_ENTRY_SIZE] =
0ff2b86e
L		 578{
579 0x68, 0, 0, 0, 0, /* pushq immediate */
580 0xf2, 0xe9, 0, 0, 0, 0, /* bnd jmpq relative */
581 0x0f, 0x1f, 0x44, 0, 0 /* nopl 0(%rax,%rax,1) */
582};
583
ee2fdd6f
L		 584/* The first entry in the IBT-enabled lazy procedure linkage table is the
585 the same as the lazy PLT with BND prefix so that bound registers are
586 preserved when control is passed to dynamic linker. Subsequent
587 entries for a IBT-enabled lazy procedure linkage table look like
588 this. */
589
590static const bfd_byte elf_x86_64_lazy_ibt_plt_entry[LAZY_PLT_ENTRY_SIZE] =
591{
592 0xf3, 0x0f, 0x1e, 0xfa, /* endbr64 */
593 0x68, 0, 0, 0, 0, /* pushq immediate */
594 0xf2, 0xe9, 0, 0, 0, 0, /* bnd jmpq relative */
595 0x90 /* nop */
596};
597
598/* The first entry in the x32 IBT-enabled lazy procedure linkage table
de194d85 599 is the same as the normal lazy PLT. Subsequent entries for an
ee2fdd6f
L		 600 x32 IBT-enabled lazy procedure linkage table look like this. */
601
602static const bfd_byte elf_x32_lazy_ibt_plt_entry[LAZY_PLT_ENTRY_SIZE] =
603{
604 0xf3, 0x0f, 0x1e, 0xfa, /* endbr64 */
605 0x68, 0, 0, 0, 0, /* pushq immediate */
606 0xe9, 0, 0, 0, 0, /* jmpq relative */
607 0x66, 0x90 /* xchg %ax,%ax */
608};
609
38b12349 610/* Entries in the non-lazey procedure linkage table look like this. */
0ff2b86e 611
38b12349 612static const bfd_byte elf_x86_64_non_lazy_plt_entry[NON_LAZY_PLT_ENTRY_SIZE] =
0ff2b86e 613{
38b12349
L		 614 0xff, 0x25, /* jmpq *name@GOTPC(%rip) */
615 0, 0, 0, 0, /* replaced with offset to this symbol in .got. */
616 0x66, 0x90 /* xchg %ax,%ax */
0ff2b86e
L		 617};
618
38b12349
L		 619/* Entries for branches with BND prefix in the non-lazey procedure
620 linkage table look like this. */
0ff2b86e 621
38b12349 622static const bfd_byte elf_x86_64_non_lazy_bnd_plt_entry[NON_LAZY_PLT_ENTRY_SIZE] =
0ff2b86e 623{
38b12349
L		 624 0xf2, 0xff, 0x25, /* bnd jmpq *name@GOTPC(%rip) */
625 0, 0, 0, 0, /* replaced with offset to this symbol in .got. */
626 0x90 /* nop */
0ff2b86e
L		 627};
628
ee2fdd6f
L		 629/* Entries for branches with IBT-enabled in the non-lazey procedure
630 linkage table look like this. They have the same size as the lazy
631 PLT entry. */
632
633static const bfd_byte elf_x86_64_non_lazy_ibt_plt_entry[LAZY_PLT_ENTRY_SIZE] =
634{
635 0xf3, 0x0f, 0x1e, 0xfa, /* endbr64 */
636 0xf2, 0xff, 0x25, /* bnd jmpq *name@GOTPC(%rip) */
637 0, 0, 0, 0, /* replaced with offset to this symbol in .got. */
638 0x0f, 0x1f, 0x44, 0x00, 0x00 /* nopl 0x0(%rax,%rax,1) */
639};
640
641/* Entries for branches with IBT-enabled in the x32 non-lazey procedure
642 linkage table look like this. They have the same size as the lazy
643 PLT entry. */
644
645static const bfd_byte elf_x32_non_lazy_ibt_plt_entry[LAZY_PLT_ENTRY_SIZE] =
646{
647 0xf3, 0x0f, 0x1e, 0xfa, /* endbr64 */
648 0xff, 0x25, /* jmpq *name@GOTPC(%rip) */
649 0, 0, 0, 0, /* replaced with offset to this symbol in .got. */
650 0x66, 0x0f, 0x1f, 0x44, 0x00, 0x00 /* nopw 0x0(%rax,%rax,1) */
651};
652
38b12349 653/* .eh_frame covering the lazy .plt section. */
e41b3a13 654
38b12349 655static const bfd_byte elf_x86_64_eh_frame_lazy_plt[] =
e41b3a13 656{
e41b3a13
JJ		 657 PLT_CIE_LENGTH, 0, 0, 0, /* CIE length */
658 0, 0, 0, 0, /* CIE ID */
659 1, /* CIE version */
660 'z', 'R', 0, /* Augmentation string */
661 1, /* Code alignment factor */
662 0x78, /* Data alignment factor */
663 16, /* Return address column */
664 1, /* Augmentation size */
665 DW_EH_PE_pcrel | DW_EH_PE_sdata4, /* FDE encoding */
666 DW_CFA_def_cfa, 7, 8, /* DW_CFA_def_cfa: r7 (rsp) ofs 8 */
667 DW_CFA_offset + 16, 1, /* DW_CFA_offset: r16 (rip) at cfa-8 */
668 DW_CFA_nop, DW_CFA_nop,
669
670 PLT_FDE_LENGTH, 0, 0, 0, /* FDE length */
671 PLT_CIE_LENGTH + 8, 0, 0, 0, /* CIE pointer */
672 0, 0, 0, 0, /* R_X86_64_PC32 .plt goes here */
673 0, 0, 0, 0, /* .plt size goes here */
674 0, /* Augmentation size */
675 DW_CFA_def_cfa_offset, 16, /* DW_CFA_def_cfa_offset: 16 */
676 DW_CFA_advance_loc + 6, /* DW_CFA_advance_loc: 6 to __PLT__+6 */
677 DW_CFA_def_cfa_offset, 24, /* DW_CFA_def_cfa_offset: 24 */
678 DW_CFA_advance_loc + 10, /* DW_CFA_advance_loc: 10 to __PLT__+16 */
679 DW_CFA_def_cfa_expression, /* DW_CFA_def_cfa_expression */
680 11, /* Block length */
681 DW_OP_breg7, 8, /* DW_OP_breg7 (rsp): 8 */
682 DW_OP_breg16, 0, /* DW_OP_breg16 (rip): 0 */
683 DW_OP_lit15, DW_OP_and, DW_OP_lit11, DW_OP_ge,
684 DW_OP_lit3, DW_OP_shl, DW_OP_plus,
685 DW_CFA_nop, DW_CFA_nop, DW_CFA_nop, DW_CFA_nop
686};
687
38b12349 688/* .eh_frame covering the lazy BND .plt section. */
9e659176 689
38b12349 690static const bfd_byte elf_x86_64_eh_frame_lazy_bnd_plt[] =
9e659176
L		 691{
692 PLT_CIE_LENGTH, 0, 0, 0, /* CIE length */
693 0, 0, 0, 0, /* CIE ID */
694 1, /* CIE version */
695 'z', 'R', 0, /* Augmentation string */
696 1, /* Code alignment factor */
697 0x78, /* Data alignment factor */
698 16, /* Return address column */
699 1, /* Augmentation size */
700 DW_EH_PE_pcrel | DW_EH_PE_sdata4, /* FDE encoding */
701 DW_CFA_def_cfa, 7, 8, /* DW_CFA_def_cfa: r7 (rsp) ofs 8 */
702 DW_CFA_offset + 16, 1, /* DW_CFA_offset: r16 (rip) at cfa-8 */
703 DW_CFA_nop, DW_CFA_nop,
704
705 PLT_FDE_LENGTH, 0, 0, 0, /* FDE length */
706 PLT_CIE_LENGTH + 8, 0, 0, 0, /* CIE pointer */
707 0, 0, 0, 0, /* R_X86_64_PC32 .plt goes here */
708 0, 0, 0, 0, /* .plt size goes here */
709 0, /* Augmentation size */
710 DW_CFA_def_cfa_offset, 16, /* DW_CFA_def_cfa_offset: 16 */
711 DW_CFA_advance_loc + 6, /* DW_CFA_advance_loc: 6 to __PLT__+6 */
712 DW_CFA_def_cfa_offset, 24, /* DW_CFA_def_cfa_offset: 24 */
713 DW_CFA_advance_loc + 10, /* DW_CFA_advance_loc: 10 to __PLT__+16 */
714 DW_CFA_def_cfa_expression, /* DW_CFA_def_cfa_expression */
715 11, /* Block length */
716 DW_OP_breg7, 8, /* DW_OP_breg7 (rsp): 8 */
717 DW_OP_breg16, 0, /* DW_OP_breg16 (rip): 0 */
718 DW_OP_lit15, DW_OP_and, DW_OP_lit5, DW_OP_ge,
719 DW_OP_lit3, DW_OP_shl, DW_OP_plus,
720 DW_CFA_nop, DW_CFA_nop, DW_CFA_nop, DW_CFA_nop
721};
722
ee2fdd6f
L		 723/* .eh_frame covering the lazy .plt section with IBT-enabled. */
724
725static const bfd_byte elf_x86_64_eh_frame_lazy_ibt_plt[] =
726{
727 PLT_CIE_LENGTH, 0, 0, 0, /* CIE length */
728 0, 0, 0, 0, /* CIE ID */
729 1, /* CIE version */
730 'z', 'R', 0, /* Augmentation string */
731 1, /* Code alignment factor */
732 0x78, /* Data alignment factor */
733 16, /* Return address column */
734 1, /* Augmentation size */
735 DW_EH_PE_pcrel | DW_EH_PE_sdata4, /* FDE encoding */
736 DW_CFA_def_cfa, 7, 8, /* DW_CFA_def_cfa: r7 (rsp) ofs 8 */
737 DW_CFA_offset + 16, 1, /* DW_CFA_offset: r16 (rip) at cfa-8 */
738 DW_CFA_nop, DW_CFA_nop,
739
740 PLT_FDE_LENGTH, 0, 0, 0, /* FDE length */
741 PLT_CIE_LENGTH + 8, 0, 0, 0, /* CIE pointer */
742 0, 0, 0, 0, /* R_X86_64_PC32 .plt goes here */
743 0, 0, 0, 0, /* .plt size goes here */
744 0, /* Augmentation size */
745 DW_CFA_def_cfa_offset, 16, /* DW_CFA_def_cfa_offset: 16 */
746 DW_CFA_advance_loc + 6, /* DW_CFA_advance_loc: 6 to __PLT__+6 */
747 DW_CFA_def_cfa_offset, 24, /* DW_CFA_def_cfa_offset: 24 */
748 DW_CFA_advance_loc + 10, /* DW_CFA_advance_loc: 10 to __PLT__+16 */
749 DW_CFA_def_cfa_expression, /* DW_CFA_def_cfa_expression */
750 11, /* Block length */
751 DW_OP_breg7, 8, /* DW_OP_breg7 (rsp): 8 */
752 DW_OP_breg16, 0, /* DW_OP_breg16 (rip): 0 */
753 DW_OP_lit15, DW_OP_and, DW_OP_lit10, DW_OP_ge,
754 DW_OP_lit3, DW_OP_shl, DW_OP_plus,
755 DW_CFA_nop, DW_CFA_nop, DW_CFA_nop, DW_CFA_nop
756};
757
758/* .eh_frame covering the x32 lazy .plt section with IBT-enabled. */
759
760static const bfd_byte elf_x32_eh_frame_lazy_ibt_plt[] =
761{
762 PLT_CIE_LENGTH, 0, 0, 0, /* CIE length */
763 0, 0, 0, 0, /* CIE ID */
764 1, /* CIE version */
765 'z', 'R', 0, /* Augmentation string */
766 1, /* Code alignment factor */
767 0x78, /* Data alignment factor */
768 16, /* Return address column */
769 1, /* Augmentation size */
770 DW_EH_PE_pcrel | DW_EH_PE_sdata4, /* FDE encoding */
771 DW_CFA_def_cfa, 7, 8, /* DW_CFA_def_cfa: r7 (rsp) ofs 8 */
772 DW_CFA_offset + 16, 1, /* DW_CFA_offset: r16 (rip) at cfa-8 */
773 DW_CFA_nop, DW_CFA_nop,
774
775 PLT_FDE_LENGTH, 0, 0, 0, /* FDE length */
776 PLT_CIE_LENGTH + 8, 0, 0, 0, /* CIE pointer */
777 0, 0, 0, 0, /* R_X86_64_PC32 .plt goes here */
778 0, 0, 0, 0, /* .plt size goes here */
779 0, /* Augmentation size */
780 DW_CFA_def_cfa_offset, 16, /* DW_CFA_def_cfa_offset: 16 */
781 DW_CFA_advance_loc + 6, /* DW_CFA_advance_loc: 6 to __PLT__+6 */
782 DW_CFA_def_cfa_offset, 24, /* DW_CFA_def_cfa_offset: 24 */
783 DW_CFA_advance_loc + 10, /* DW_CFA_advance_loc: 10 to __PLT__+16 */
784 DW_CFA_def_cfa_expression, /* DW_CFA_def_cfa_expression */
785 11, /* Block length */
786 DW_OP_breg7, 8, /* DW_OP_breg7 (rsp): 8 */
787 DW_OP_breg16, 0, /* DW_OP_breg16 (rip): 0 */
788 DW_OP_lit15, DW_OP_and, DW_OP_lit9, DW_OP_ge,
789 DW_OP_lit3, DW_OP_shl, DW_OP_plus,
790 DW_CFA_nop, DW_CFA_nop, DW_CFA_nop, DW_CFA_nop
791};
792
38b12349 793/* .eh_frame covering the non-lazy .plt section. */
fff53dae 794
38b12349 795static const bfd_byte elf_x86_64_eh_frame_non_lazy_plt[] =
fff53dae
L		 796{
797#define PLT_GOT_FDE_LENGTH 20
798 PLT_CIE_LENGTH, 0, 0, 0, /* CIE length */
799 0, 0, 0, 0, /* CIE ID */
800 1, /* CIE version */
801 'z', 'R', 0, /* Augmentation string */
802 1, /* Code alignment factor */
803 0x78, /* Data alignment factor */
804 16, /* Return address column */
805 1, /* Augmentation size */
806 DW_EH_PE_pcrel | DW_EH_PE_sdata4, /* FDE encoding */
807 DW_CFA_def_cfa, 7, 8, /* DW_CFA_def_cfa: r7 (rsp) ofs 8 */
808 DW_CFA_offset + 16, 1, /* DW_CFA_offset: r16 (rip) at cfa-8 */
809 DW_CFA_nop, DW_CFA_nop,
810
811 PLT_GOT_FDE_LENGTH, 0, 0, 0, /* FDE length */
812 PLT_CIE_LENGTH + 8, 0, 0, 0, /* CIE pointer */
38b12349
L		 813 0, 0, 0, 0, /* the start of non-lazy .plt goes here */
814 0, 0, 0, 0, /* non-lazy .plt size goes here */
fff53dae
L		 815 0, /* Augmentation size */
816 DW_CFA_nop, DW_CFA_nop, DW_CFA_nop, DW_CFA_nop,
817 DW_CFA_nop, DW_CFA_nop, DW_CFA_nop
818};
819
38b12349
L		 820/* Architecture-specific backend data for x86-64. */
821
822struct elf_x86_64_backend_data
823{
824 /* Target system. */
825 enum
826 {
827 is_normal,
828 is_nacl
829 } os;
eed180f8
RM		 830};
831
f8222080
L		 832#define get_elf_x86_64_arch_data(bed) \
833 ((const struct elf_x86_64_backend_data *) (bed)->arch_data)
834
eed180f8 835#define get_elf_x86_64_backend_data(abfd) \
f8222080 836 get_elf_x86_64_arch_data (get_elf_backend_data (abfd))
eed180f8 837
eed180f8 838/* These are the standard parameters. */
765e526c 839static const struct elf_x86_lazy_plt_layout elf_x86_64_lazy_plt =
eed180f8 840 {
38b12349 841 elf_x86_64_lazy_plt0_entry, /* plt0_entry */
765e526c 842 LAZY_PLT_ENTRY_SIZE, /* plt0_entry_size */
38b12349
L		 843 elf_x86_64_lazy_plt_entry, /* plt_entry */
844 LAZY_PLT_ENTRY_SIZE, /* plt_entry_size */
eed180f8
RM		 845 2, /* plt0_got1_offset */
846 8, /* plt0_got2_offset */
847 12, /* plt0_got2_insn_end */
848 2, /* plt_got_offset */
849 7, /* plt_reloc_offset */
850 12, /* plt_plt_offset */
851 6, /* plt_got_insn_size */
38b12349 852 LAZY_PLT_ENTRY_SIZE, /* plt_plt_insn_end */
eed180f8 853 6, /* plt_lazy_offset */
a6798bab
L		 854 elf_x86_64_lazy_plt0_entry, /* pic_plt0_entry */
855 elf_x86_64_lazy_plt_entry, /* pic_plt_entry */
38b12349
L		 856 elf_x86_64_eh_frame_lazy_plt, /* eh_frame_plt */
857 sizeof (elf_x86_64_eh_frame_lazy_plt) /* eh_frame_plt_size */
858 };
859
765e526c 860static const struct elf_x86_non_lazy_plt_layout elf_x86_64_non_lazy_plt =
38b12349
L		 861 {
862 elf_x86_64_non_lazy_plt_entry, /* plt_entry */
a6798bab 863 elf_x86_64_non_lazy_plt_entry, /* pic_plt_entry */
38b12349
L		 864 NON_LAZY_PLT_ENTRY_SIZE, /* plt_entry_size */
865 2, /* plt_got_offset */
866 6, /* plt_got_insn_size */
867 elf_x86_64_eh_frame_non_lazy_plt, /* eh_frame_plt */
868 sizeof (elf_x86_64_eh_frame_non_lazy_plt) /* eh_frame_plt_size */
eed180f8
RM		 869 };
870
765e526c 871static const struct elf_x86_lazy_plt_layout elf_x86_64_lazy_bnd_plt =
0ff2b86e 872 {
38b12349 873 elf_x86_64_lazy_bnd_plt0_entry, /* plt0_entry */
765e526c 874 LAZY_PLT_ENTRY_SIZE, /* plt0_entry_size */
38b12349
L		 875 elf_x86_64_lazy_bnd_plt_entry, /* plt_entry */
876 LAZY_PLT_ENTRY_SIZE, /* plt_entry_size */
0ff2b86e
L		 877 2, /* plt0_got1_offset */
878 1+8, /* plt0_got2_offset */
879 1+12, /* plt0_got2_insn_end */
880 1+2, /* plt_got_offset */
881 1, /* plt_reloc_offset */
882 7, /* plt_plt_offset */
883 1+6, /* plt_got_insn_size */
884 11, /* plt_plt_insn_end */
885 0, /* plt_lazy_offset */
a6798bab
L		 886 elf_x86_64_lazy_bnd_plt0_entry, /* pic_plt0_entry */
887 elf_x86_64_lazy_bnd_plt_entry, /* pic_plt_entry */
38b12349
L		 888 elf_x86_64_eh_frame_lazy_bnd_plt, /* eh_frame_plt */
889 sizeof (elf_x86_64_eh_frame_lazy_bnd_plt) /* eh_frame_plt_size */
890 };
891
765e526c 892static const struct elf_x86_non_lazy_plt_layout elf_x86_64_non_lazy_bnd_plt =
38b12349
L		 893 {
894 elf_x86_64_non_lazy_bnd_plt_entry, /* plt_entry */
a6798bab 895 elf_x86_64_non_lazy_bnd_plt_entry, /* pic_plt_entry */
38b12349
L		 896 NON_LAZY_PLT_ENTRY_SIZE, /* plt_entry_size */
897 1+2, /* plt_got_offset */
898 1+6, /* plt_got_insn_size */
899 elf_x86_64_eh_frame_non_lazy_plt, /* eh_frame_plt */
900 sizeof (elf_x86_64_eh_frame_non_lazy_plt) /* eh_frame_plt_size */
901 };
902
765e526c 903static const struct elf_x86_lazy_plt_layout elf_x86_64_lazy_ibt_plt =
ee2fdd6f
L		 904 {
905 elf_x86_64_lazy_bnd_plt0_entry, /* plt0_entry */
765e526c 906 LAZY_PLT_ENTRY_SIZE, /* plt0_entry_size */
ee2fdd6f
L		 907 elf_x86_64_lazy_ibt_plt_entry, /* plt_entry */
908 LAZY_PLT_ENTRY_SIZE, /* plt_entry_size */
909 2, /* plt0_got1_offset */
910 1+8, /* plt0_got2_offset */
911 1+12, /* plt0_got2_insn_end */
912 4+1+2, /* plt_got_offset */
913 4+1, /* plt_reloc_offset */
914 4+1+6, /* plt_plt_offset */
915 4+1+6, /* plt_got_insn_size */
916 4+1+5+5, /* plt_plt_insn_end */
917 0, /* plt_lazy_offset */
a6798bab
L		 918 elf_x86_64_lazy_bnd_plt0_entry, /* pic_plt0_entry */
919 elf_x86_64_lazy_ibt_plt_entry, /* pic_plt_entry */
ee2fdd6f
L		 920 elf_x86_64_eh_frame_lazy_ibt_plt, /* eh_frame_plt */
921 sizeof (elf_x86_64_eh_frame_lazy_ibt_plt) /* eh_frame_plt_size */
922 };
923
765e526c 924static const struct elf_x86_lazy_plt_layout elf_x32_lazy_ibt_plt =
ee2fdd6f
L		 925 {
926 elf_x86_64_lazy_plt0_entry, /* plt0_entry */
765e526c 927 LAZY_PLT_ENTRY_SIZE, /* plt0_entry_size */
ee2fdd6f
L		 928 elf_x32_lazy_ibt_plt_entry, /* plt_entry */
929 LAZY_PLT_ENTRY_SIZE, /* plt_entry_size */
930 2, /* plt0_got1_offset */
931 8, /* plt0_got2_offset */
932 12, /* plt0_got2_insn_end */
933 4+2, /* plt_got_offset */
934 4+1, /* plt_reloc_offset */
935 4+6, /* plt_plt_offset */
936 4+6, /* plt_got_insn_size */
937 4+5+5, /* plt_plt_insn_end */
938 0, /* plt_lazy_offset */
a6798bab
L		 939 elf_x86_64_lazy_plt0_entry, /* pic_plt0_entry */
940 elf_x32_lazy_ibt_plt_entry, /* pic_plt_entry */
ee2fdd6f
L		 941 elf_x32_eh_frame_lazy_ibt_plt, /* eh_frame_plt */
942 sizeof (elf_x32_eh_frame_lazy_ibt_plt) /* eh_frame_plt_size */
943 };
944
765e526c 945static const struct elf_x86_non_lazy_plt_layout elf_x86_64_non_lazy_ibt_plt =
ee2fdd6f
L		 946 {
947 elf_x86_64_non_lazy_ibt_plt_entry, /* plt_entry */
a6798bab 948 elf_x86_64_non_lazy_ibt_plt_entry, /* pic_plt_entry */
ee2fdd6f
L		 949 LAZY_PLT_ENTRY_SIZE, /* plt_entry_size */
950 4+1+2, /* plt_got_offset */
951 4+1+6, /* plt_got_insn_size */
952 elf_x86_64_eh_frame_non_lazy_plt, /* eh_frame_plt */
953 sizeof (elf_x86_64_eh_frame_non_lazy_plt) /* eh_frame_plt_size */
954 };
955
765e526c 956static const struct elf_x86_non_lazy_plt_layout elf_x32_non_lazy_ibt_plt =
ee2fdd6f
L		 957 {
958 elf_x32_non_lazy_ibt_plt_entry, /* plt_entry */
a6798bab 959 elf_x32_non_lazy_ibt_plt_entry, /* pic_plt_entry */
ee2fdd6f
L		 960 LAZY_PLT_ENTRY_SIZE, /* plt_entry_size */
961 4+2, /* plt_got_offset */
962 4+6, /* plt_got_insn_size */
963 elf_x86_64_eh_frame_non_lazy_plt, /* eh_frame_plt */
964 sizeof (elf_x86_64_eh_frame_non_lazy_plt) /* eh_frame_plt_size */
965 };
966
38b12349
L		 967static const struct elf_x86_64_backend_data elf_x86_64_arch_bed =
968 {
969 is_normal /* os */
0ff2b86e
L		 970 };
971
eed180f8
RM		 972#define elf_backend_arch_data &elf_x86_64_arch_bed
973
b34976b6 974static bfd_boolean
27482721 975elf64_x86_64_elf_object_p (bfd *abfd)
bffbf940 976{
8d88c4ca
NC		 977 /* Set the right machine number for an x86-64 elf64 file. */
978 bfd_default_set_arch_mach (abfd, bfd_arch_i386, bfd_mach_x86_64);
b34976b6 979 return TRUE;
8d88c4ca
NC		 980}
981
8059fb19
RM		 982static bfd_boolean
983elf32_x86_64_elf_object_p (bfd *abfd)
984{
985 /* Set the right machine number for an x86-64 elf32 file. */
986 bfd_default_set_arch_mach (abfd, bfd_arch_i386, bfd_mach_x64_32);
987 return TRUE;
988}
989
142411ca
L		 990/* Return TRUE if the TLS access code sequence support transition
991 from R_TYPE. */
992
993static bfd_boolean
351f65ca
L		 994elf_x86_64_check_tls_transition (bfd *abfd,
995 struct bfd_link_info *info,
996 asection *sec,
997 bfd_byte *contents,
998 Elf_Internal_Shdr *symtab_hdr,
999 struct elf_link_hash_entry **sym_hashes,
1000 unsigned int r_type,
1001 const Elf_Internal_Rela *rel,
1002 const Elf_Internal_Rela *relend)
bffbf940 1003{
142411ca
L		 1004 unsigned int val;
1005 unsigned long r_symndx;
5c98a14e 1006 bfd_boolean largepic = FALSE;
142411ca
L		 1007 struct elf_link_hash_entry *h;
1008 bfd_vma offset;
0afcef53 1009 struct elf_x86_link_hash_table *htab;
e2cbcd91 1010 bfd_byte *call;
1d4af308 1011 bfd_boolean indirect_call;
142411ca 1012
0afcef53 1013 htab = elf_x86_hash_table (info, X86_64_ELF_DATA);
142411ca 1014 offset = rel->r_offset;
bffbf940 1015 switch (r_type)
142411ca
L		 1016 {
1017 case R_X86_64_TLSGD:
1018 case R_X86_64_TLSLD:
1019 if ((rel + 1) >= relend)
1020 return FALSE;
1021
1022 if (r_type == R_X86_64_TLSGD)
1023 {
52bc799a 1024 /* Check transition from GD access model. For 64bit, only
142411ca 1025 .byte 0x66; leaq foo@tlsgd(%rip), %rdi
e2cbcd91
L		 1026 .word 0x6666; rex64; call __tls_get_addr@PLT
1027 or
1028 .byte 0x66; leaq foo@tlsgd(%rip), %rdi
1029 .byte 0x66; rex64
1030 call *__tls_get_addr@GOTPCREL(%rip)
1031 which may be converted to
1032 addr32 call __tls_get_addr
52bc799a
L		 1033 can transit to different access model. For 32bit, only
1034 leaq foo@tlsgd(%rip), %rdi
e2cbcd91
L		 1035 .word 0x6666; rex64; call __tls_get_addr@PLT
1036 or
1037 leaq foo@tlsgd(%rip), %rdi
1038 .byte 0x66; rex64
1039 call *__tls_get_addr@GOTPCREL(%rip)
1040 which may be converted to
1041 addr32 call __tls_get_addr
1042 can transit to different access model. For largepic,
5c98a14e 1043 we also support:
e2cbcd91
L		 1044 leaq foo@tlsgd(%rip), %rdi
1045 movabsq $__tls_get_addr@pltoff, %rax
1046 addq $r15, %rax
1047 call *%rax
1048 or
5c98a14e
JJ		 1049 leaq foo@tlsgd(%rip), %rdi
1050 movabsq $__tls_get_addr@pltoff, %rax
1051 addq $rbx, %rax
e2cbcd91 1052 call *%rax */
142411ca 1053
fa289a5f
AM		 1054 static const unsigned char leaq[] = { 0x66, 0x48, 0x8d, 0x3d };
1055
5c98a14e 1056 if ((offset + 12) > sec->size)
142411ca 1057 return FALSE;
52bc799a 1058
e2cbcd91
L		 1059 call = contents + offset + 4;
1060 if (call[0] != 0x66
1061 || !((call[1] == 0x48
1062 && call[2] == 0xff
1063 && call[3] == 0x15)
1064 || (call[1] == 0x48
1065 && call[2] == 0x67
1066 && call[3] == 0xe8)
1067 || (call[1] == 0x66
1068 && call[2] == 0x48
1069 && call[3] == 0xe8)))
5c98a14e
JJ		 1070 {
1071 if (!ABI_64_P (abfd)
1072 || (offset + 19) > sec->size
1073 || offset < 3
e2cbcd91
L		 1074 || memcmp (call - 7, leaq + 1, 3) != 0
1075 || memcmp (call, "\x48\xb8", 2) != 0
1076 || call[11] != 0x01
1077 || call[13] != 0xff
1078 || call[14] != 0xd0
1079 || !((call[10] == 0x48 && call[12] == 0xd8)
1080 || (call[10] == 0x4c && call[12] == 0xf8)))
5c98a14e
JJ		 1081 return FALSE;
1082 largepic = TRUE;
1083 }
1084 else if (ABI_64_P (abfd))
52bc799a 1085 {
52bc799a 1086 if (offset < 4
fa289a5f 1087 || memcmp (contents + offset - 4, leaq, 4) != 0)
52bc799a
L		 1088 return FALSE;
1089 }
1090 else
1091 {
52bc799a 1092 if (offset < 3
fa289a5f 1093 || memcmp (contents + offset - 3, leaq + 1, 3) != 0)
52bc799a
L		 1094 return FALSE;
1095 }
e2cbcd91 1096 indirect_call = call[2] == 0xff;
142411ca
L		 1097 }
1098 else
1099 {
1100 /* Check transition from LD access model. Only
1101 leaq foo@tlsld(%rip), %rdi;
e2cbcd91
L		 1102 call __tls_get_addr@PLT
1103 or
1104 leaq foo@tlsld(%rip), %rdi;
1105 call *__tls_get_addr@GOTPCREL(%rip)
1106 which may be converted to
1107 addr32 call __tls_get_addr
5c98a14e
JJ		 1108 can transit to different access model. For largepic
1109 we also support:
e2cbcd91
L		 1110 leaq foo@tlsld(%rip), %rdi
1111 movabsq $__tls_get_addr@pltoff, %rax
1112 addq $r15, %rax
1113 call *%rax
1114 or
5c98a14e
JJ		 1115 leaq foo@tlsld(%rip), %rdi
1116 movabsq $__tls_get_addr@pltoff, %rax
1117 addq $rbx, %rax
e2cbcd91 1118 call *%rax */
142411ca 1119
fa289a5f 1120 static const unsigned char lea[] = { 0x48, 0x8d, 0x3d };
142411ca
L		 1121
1122 if (offset < 3 || (offset + 9) > sec->size)
1123 return FALSE;
1124
5c98a14e 1125 if (memcmp (contents + offset - 3, lea, 3) != 0)
142411ca 1126 return FALSE;
5c98a14e 1127
e2cbcd91
L		 1128 call = contents + offset + 4;
1129 if (!(call[0] == 0xe8
1130 || (call[0] == 0xff && call[1] == 0x15)
1131 || (call[0] == 0x67 && call[1] == 0xe8)))
5c98a14e
JJ		 1132 {
1133 if (!ABI_64_P (abfd)
1134 || (offset + 19) > sec->size
e2cbcd91
L		 1135 || memcmp (call, "\x48\xb8", 2) != 0
1136 || call[11] != 0x01
1137 || call[13] != 0xff
1138 || call[14] != 0xd0
1139 || !((call[10] == 0x48 && call[12] == 0xd8)
1140 || (call[10] == 0x4c && call[12] == 0xf8)))
5c98a14e
JJ		 1141 return FALSE;
1142 largepic = TRUE;
1143 }
e2cbcd91 1144 indirect_call = call[0] == 0xff;
142411ca
L		 1145 }
1146
351f65ca 1147 r_symndx = htab->r_sym (rel[1].r_info);
142411ca
L		 1148 if (r_symndx < symtab_hdr->sh_info)
1149 return FALSE;
1150
1151 h = sym_hashes[r_symndx - symtab_hdr->sh_info];
1d4af308 1152 if (h == NULL
0afcef53 1153 || !((struct elf_x86_link_hash_entry *) h)->tls_get_addr)
e2cbcd91 1154 return FALSE;
e2cbcd91 1155 else
78984959
L		 1156 {
1157 r_type = (ELF32_R_TYPE (rel[1].r_info)
1158 & ~R_X86_64_converted_reloc_bit);
1159 if (largepic)
1160 return r_type == R_X86_64_PLTOFF64;
1161 else if (indirect_call)
1162 return r_type == R_X86_64_GOTPCRELX;
1163 else
1164 return (r_type == R_X86_64_PC32 || r_type == R_X86_64_PLT32);
1165 }
142411ca
L		 1166
1167 case R_X86_64_GOTTPOFF:
1168 /* Check transition from IE access model:
4a4c5f25
L		 1169 mov foo@gottpoff(%rip), %reg
1170 add foo@gottpoff(%rip), %reg
142411ca
L		 1171 */
1172
4a4c5f25
L		 1173 /* Check REX prefix first. */
1174 if (offset >= 3 && (offset + 4) <= sec->size)
1175 {
1176 val = bfd_get_8 (abfd, contents + offset - 3);
1177 if (val != 0x48 && val != 0x4c)
1178 {
1179 /* X32 may have 0x44 REX prefix or no REX prefix. */
1180 if (ABI_64_P (abfd))
1181 return FALSE;
1182 }
1183 }
1184 else
1185 {
1186 /* X32 may not have any REX prefix. */
1187 if (ABI_64_P (abfd))
1188 return FALSE;
1189 if (offset < 2 || (offset + 3) > sec->size)
1190 return FALSE;
1191 }
142411ca
L		 1192
1193 val = bfd_get_8 (abfd, contents + offset - 2);
1194 if (val != 0x8b && val != 0x03)
1195 return FALSE;
1196
1197 val = bfd_get_8 (abfd, contents + offset - 1);
1198 return (val & 0xc7) == 5;
1199
1200 case R_X86_64_GOTPC32_TLSDESC:
1201 /* Check transition from GDesc access model:
1202 leaq x@tlsdesc(%rip), %rax
1203
1204 Make sure it's a leaq adding rip to a 32-bit offset
1205 into any register, although it's probably almost always
1206 going to be rax. */
1207
1208 if (offset < 3 || (offset + 4) > sec->size)
1209 return FALSE;
1210
1211 val = bfd_get_8 (abfd, contents + offset - 3);
1212 if ((val & 0xfb) != 0x48)
1213 return FALSE;
1214
1215 if (bfd_get_8 (abfd, contents + offset - 2) != 0x8d)
1216 return FALSE;
1217
1218 val = bfd_get_8 (abfd, contents + offset - 1);
1219 return (val & 0xc7) == 0x05;
1220
1221 case R_X86_64_TLSDESC_CALL:
1222 /* Check transition from GDesc access model:
1223 call *x@tlsdesc(%rax)
1224 */
1225 if (offset + 2 <= sec->size)
1226 {
1227 /* Make sure that it's a call *x@tlsdesc(%rax). */
e2cbcd91
L		 1228 call = contents + offset;
1229 return call[0] == 0xff && call[1] == 0x10;
142411ca
L		 1230 }
1231
1232 return FALSE;
1233
1234 default:
1235 abort ();
1236 }
1237}
1238
1239/* Return TRUE if the TLS access transition is OK or no transition
1240 will be performed. Update R_TYPE if there is a transition. */
1241
1242static bfd_boolean
351f65ca
L		 1243elf_x86_64_tls_transition (struct bfd_link_info *info, bfd *abfd,
1244 asection *sec, bfd_byte *contents,
1245 Elf_Internal_Shdr *symtab_hdr,
1246 struct elf_link_hash_entry **sym_hashes,
1247 unsigned int *r_type, int tls_type,
1248 const Elf_Internal_Rela *rel,
1249 const Elf_Internal_Rela *relend,
1250 struct elf_link_hash_entry *h,
bedfd056
L		 1251 unsigned long r_symndx,
1252 bfd_boolean from_relocate_section)
142411ca
L		 1253{
1254 unsigned int from_type = *r_type;
1255 unsigned int to_type = from_type;
1256 bfd_boolean check = TRUE;
1257
bb1cb422
L		 1258 /* Skip TLS transition for functions. */
1259 if (h != NULL
1260 && (h->type == STT_FUNC
1261 || h->type == STT_GNU_IFUNC))
1262 return TRUE;
1263
142411ca 1264 switch (from_type)
bffbf940
JJ		 1265 {
1266 case R_X86_64_TLSGD:
67a4f2b7
AO		 1267 case R_X86_64_GOTPC32_TLSDESC:
1268 case R_X86_64_TLSDESC_CALL:
bffbf940 1269 case R_X86_64_GOTTPOFF:
0e1862bb 1270 if (bfd_link_executable (info))
142411ca
L		 1271 {
1272 if (h == NULL)
1273 to_type = R_X86_64_TPOFF32;
1274 else
1275 to_type = R_X86_64_GOTTPOFF;
1276 }
1277
bedfd056
L		 1278 /* When we are called from elf_x86_64_relocate_section, there may
1279 be additional transitions based on TLS_TYPE. */
1280 if (from_relocate_section)
142411ca
L		 1281 {
1282 unsigned int new_to_type = to_type;
1283
51537393 1284 if (TLS_TRANSITION_IE_TO_LE_P (info, h, tls_type))
142411ca
L		 1285 new_to_type = R_X86_64_TPOFF32;
1286
1287 if (to_type == R_X86_64_TLSGD
1288 || to_type == R_X86_64_GOTPC32_TLSDESC
1289 || to_type == R_X86_64_TLSDESC_CALL)
1290 {
1291 if (tls_type == GOT_TLS_IE)
1292 new_to_type = R_X86_64_GOTTPOFF;
1293 }
1294
1295 /* We checked the transition before when we were called from
351f65ca 1296 elf_x86_64_check_relocs. We only want to check the new
142411ca
L		 1297 transition which hasn't been checked before. */
1298 check = new_to_type != to_type && from_type == to_type;
1299 to_type = new_to_type;
1300 }
1301
1302 break;
1303
bffbf940 1304 case R_X86_64_TLSLD:
0e1862bb 1305 if (bfd_link_executable (info))
142411ca
L		 1306 to_type = R_X86_64_TPOFF32;
1307 break;
1308
1309 default:
1310 return TRUE;
bffbf940
JJ		 1311 }
1312
142411ca
L		 1313 /* Return TRUE if there is no transition. */
1314 if (from_type == to_type)
1315 return TRUE;
1316
1317 /* Check if the transition can be performed. */
1318 if (check
351f65ca
L		 1319 && ! elf_x86_64_check_tls_transition (abfd, info, sec, contents,
1320 symtab_hdr, sym_hashes,
1321 from_type, rel, relend))
142411ca 1322 {
2f629d23 1323 reloc_howto_type *from, *to;
4c544807 1324 const char *name;
142411ca 1325
351f65ca
L		 1326 from = elf_x86_64_rtype_to_howto (abfd, from_type);
1327 to = elf_x86_64_rtype_to_howto (abfd, to_type);
142411ca 1328
4c544807
L		 1329 if (h)
1330 name = h->root.root.string;
1331 else
1332 {
0afcef53 1333 struct elf_x86_link_hash_table *htab;
4dfe6ac6 1334
0afcef53 1335 htab = elf_x86_hash_table (info, X86_64_ELF_DATA);
4dfe6ac6
NC		 1336 if (htab == NULL)
1337 name = "*unknown*";
1338 else
1339 {
1340 Elf_Internal_Sym *isym;
1341
1342 isym = bfd_sym_from_r_symndx (&htab->sym_cache,
1343 abfd, r_symndx);
1344 name = bfd_elf_sym_name (abfd, symtab_hdr, isym, NULL);
1345 }
4c544807
L		 1346 }
1347
4eca0228 1348 _bfd_error_handler
695344c0 1349 /* xgettext:c-format */
d42c267e 1350 (_("%B: TLS transition from %s to %s against `%s' at %#Lx "
142411ca 1351 "in section `%A' failed"),
d42c267e 1352 abfd, from->name, to->name, name, rel->r_offset, sec);
142411ca
L		 1353 bfd_set_error (bfd_error_bad_value);
1354 return FALSE;
1355 }
1356
1357 *r_type = to_type;
1358 return TRUE;
bffbf940
JJ		 1359}
1360
c1d11331
L		 1361/* Rename some of the generic section flags to better document how they
1362 are used here. */
6999821f 1363#define check_relocs_failed sec_flg0
338c190a
L		 1364
1365static bfd_boolean
aab921ad
L		 1366elf_x86_64_need_pic (struct bfd_link_info *info,
1367 bfd *input_bfd, asection *sec,
338c190a
L		 1368 struct elf_link_hash_entry *h,
1369 Elf_Internal_Shdr *symtab_hdr,
1370 Elf_Internal_Sym *isym,
1371 reloc_howto_type *howto)
1372{
1373 const char *v = "";
1374 const char *und = "";
1375 const char *pic = "";
aab921ad 1376 const char *object;
338c190a
L		 1377
1378 const char *name;
1379 if (h)
1380 {
1381 name = h->root.root.string;
1382 switch (ELF_ST_VISIBILITY (h->other))
1383 {
1384 case STV_HIDDEN:
1385 v = _("hidden symbol ");
1386 break;
1387 case STV_INTERNAL:
1388 v = _("internal symbol ");
1389 break;
1390 case STV_PROTECTED:
1391 v = _("protected symbol ");
1392 break;
1393 default:
0afcef53 1394 if (((struct elf_x86_link_hash_entry *) h)->def_protected)
a5b4ee94
L		 1395 v = _("protected symbol ");
1396 else
1397 v = _("symbol ");
338c190a
L		 1398 pic = _("; recompile with -fPIC");
1399 break;
1400 }
1401
1402 if (!h->def_regular && !h->def_dynamic)
1403 und = _("undefined ");
1404 }
1405 else
1406 {
1407 name = bfd_elf_sym_name (input_bfd, symtab_hdr, isym, NULL);
1408 pic = _("; recompile with -fPIC");
1409 }
1410
aab921ad
L		 1411 if (bfd_link_dll (info))
1412 object = _("a shared object");
1413 else if (bfd_link_pie (info))
1414 object = _("a PIE object");
1415 else
1416 object = _("a PDE object");
1417
695344c0 1418 /* xgettext:c-format */
4eca0228 1419 _bfd_error_handler (_("%B: relocation %s against %s%s`%s' can "
aab921ad
L		 1420 "not be used when making %s%s"),
1421 input_bfd, howto->name, und, v, name,
1422 object, pic);
338c190a
L		 1423 bfd_set_error (bfd_error_bad_value);
1424 sec->check_relocs_failed = 1;
1425 return FALSE;
1426}
c1d11331 1427
c175a657
L		 1428/* With the local symbol, foo, we convert
1429 mov foo@GOTPCREL(%rip), %reg
1430 to
1431 lea foo(%rip), %reg
1432 and convert
1433 call/jmp *foo@GOTPCREL(%rip)
1434 to
1435 nop call foo/jmp foo nop
1436 When PIC is false, convert
1437 test %reg, foo@GOTPCREL(%rip)
1438 to
1439 test $foo, %reg
1440 and convert
1441 binop foo@GOTPCREL(%rip), %reg
1442 to
1443 binop $foo, %reg
1444 where binop is one of adc, add, and, cmp, or, sbb, sub, xor
1445 instructions. */
1446
1447static bfd_boolean
8b43e456 1448elf_x86_64_convert_load_reloc (bfd *abfd,
c175a657 1449 bfd_byte *contents,
6999821f 1450 unsigned int *r_type_p,
c175a657
L		 1451 Elf_Internal_Rela *irel,
1452 struct elf_link_hash_entry *h,
1453 bfd_boolean *converted,
1454 struct bfd_link_info *link_info)
1455{
0afcef53 1456 struct elf_x86_link_hash_table *htab;
c175a657 1457 bfd_boolean is_pic;
8b43e456 1458 bfd_boolean no_overflow;
c175a657
L		 1459 bfd_boolean relocx;
1460 bfd_boolean to_reloc_pc32;
1461 asection *tsec;
c175a657
L		 1462 bfd_signed_vma raddend;
1463 unsigned int opcode;
1464 unsigned int modrm;
6999821f 1465 unsigned int r_type = *r_type_p;
c175a657 1466 unsigned int r_symndx;
c175a657
L		 1467 bfd_vma roff = irel->r_offset;
1468
1469 if (roff < (r_type == R_X86_64_REX_GOTPCRELX ? 3 : 2))
1470 return TRUE;
1471
1472 raddend = irel->r_addend;
1473 /* Addend for 32-bit PC-relative relocation must be -4. */
1474 if (raddend != -4)
1475 return TRUE;
1476
0afcef53 1477 htab = elf_x86_hash_table (link_info, X86_64_ELF_DATA);
c175a657
L		 1478 is_pic = bfd_link_pic (link_info);
1479
1480 relocx = (r_type == R_X86_64_GOTPCRELX
1481 || r_type == R_X86_64_REX_GOTPCRELX);
1482
8b43e456
L		 1483 /* TRUE if --no-relax is used. */
1484 no_overflow = link_info->disable_target_specific_optimizations > 1;
c175a657
L		 1485
1486 r_symndx = htab->r_sym (irel->r_info);
1487
1488 opcode = bfd_get_8 (abfd, contents + roff - 2);
1489
1490 /* Convert mov to lea since it has been done for a while. */
1491 if (opcode != 0x8b)
1492 {
1493 /* Only convert R_X86_64_GOTPCRELX and R_X86_64_REX_GOTPCRELX
1494 for call, jmp or one of adc, add, and, cmp, or, sbb, sub,
1495 test, xor instructions. */
1496 if (!relocx)
1497 return TRUE;
1498 }
1499
1500 /* We convert only to R_X86_64_PC32:
1501 1. Branch.
1502 2. R_X86_64_GOTPCREL since we can't modify REX byte.
8b43e456 1503 3. no_overflow is true.
c175a657
L		 1504 4. PIC.
1505 */
1506 to_reloc_pc32 = (opcode == 0xff
1507 || !relocx
8b43e456 1508 || no_overflow
c175a657
L		 1509 || is_pic);
1510
1511 /* Get the symbol referred to by the reloc. */
1512 if (h == NULL)
1513 {
1514 Elf_Internal_Sym *isym
1515 = bfd_sym_from_r_symndx (&htab->sym_cache, abfd, r_symndx);
1516
1517 /* Skip relocation against undefined symbols. */
1518 if (isym->st_shndx == SHN_UNDEF)
1519 return TRUE;
1520
c175a657
L		 1521 if (isym->st_shndx == SHN_ABS)
1522 tsec = bfd_abs_section_ptr;
1523 else if (isym->st_shndx == SHN_COMMON)
1524 tsec = bfd_com_section_ptr;
1525 else if (isym->st_shndx == SHN_X86_64_LCOMMON)
1526 tsec = &_bfd_elf_large_com_section;
1527 else
1528 tsec = bfd_section_from_elf_index (abfd, isym->st_shndx);
c175a657
L		 1529 }
1530 else
1531 {
1532 /* Undefined weak symbol is only bound locally in executable
1533 and its reference is resolved as 0 without relocation
1534 overflow. We can only perform this optimization for
1535 GOTPCRELX relocations since we need to modify REX byte.
1536 It is OK convert mov with R_X86_64_GOTPCREL to
1537 R_X86_64_PC32. */
0a27fed7
L		 1538 bfd_boolean local_ref;
1539 struct elf_x86_link_hash_entry *eh = elf_x86_hash_entry (h);
1540
1541 /* NB: Also set linker_def via SYMBOL_REFERENCES_LOCAL_P. */
1542 local_ref = SYMBOL_REFERENCES_LOCAL_P (link_info, h);
c175a657 1543 if ((relocx || opcode == 0x8b)
0a27fed7
L		 1544 && (h->root.type == bfd_link_hash_undefweak
1545 && !eh->linker_def
1546 && local_ref))
c175a657
L		 1547 {
1548 if (opcode == 0xff)
1549 {
1550 /* Skip for branch instructions since R_X86_64_PC32
1551 may overflow. */
8b43e456 1552 if (no_overflow)
c175a657
L		 1553 return TRUE;
1554 }
1555 else if (relocx)
1556 {
1557 /* For non-branch instructions, we can convert to
1558 R_X86_64_32/R_X86_64_32S since we know if there
1559 is a REX byte. */
1560 to_reloc_pc32 = FALSE;
1561 }
1562
1563 /* Since we don't know the current PC when PIC is true,
1564 we can't convert to R_X86_64_PC32. */
1565 if (to_reloc_pc32 && is_pic)
1566 return TRUE;
1567
1568 goto convert;
1569 }
1570 /* Avoid optimizing GOTPCREL relocations againt _DYNAMIC since
1571 ld.so may use its link-time address. */
cbd0eecf 1572 else if (h->start_stop
0a27fed7 1573 || eh->linker_def
cbd0eecf
L		 1574 || ((h->def_regular
1575 || h->root.type == bfd_link_hash_defined
1576 || h->root.type == bfd_link_hash_defweak)
1577 && h != htab->elf.hdynamic
0a27fed7 1578 && local_ref))
c175a657
L		 1579 {
1580 /* bfd_link_hash_new or bfd_link_hash_undefined is
1581 set by an assignment in a linker script in
cbd0eecf
L		 1582 bfd_elf_record_link_assignment. start_stop is set
1583 on __start_SECNAME/__stop_SECNAME which mark section
1584 SECNAME. */
1585 if (h->start_stop
0a27fed7 1586 || eh->linker_def
cbd0eecf
L		 1587 || (h->def_regular
1588 && (h->root.type == bfd_link_hash_new
1589 || h->root.type == bfd_link_hash_undefined
1590 || ((h->root.type == bfd_link_hash_defined
1591 || h->root.type == bfd_link_hash_defweak)
1592 && h->root.u.def.section == bfd_und_section_ptr))))
c175a657
L		 1593 {
1594 /* Skip since R_X86_64_32/R_X86_64_32S may overflow. */
8b43e456 1595 if (no_overflow)
c175a657
L		 1596 return TRUE;
1597 goto convert;
1598 }
1599 tsec = h->root.u.def.section;
c175a657
L		 1600 }
1601 else
1602 return TRUE;
1603 }
1604
2168b268
L		 1605 /* Don't convert GOTPCREL relocation against large section. */
1606 if (elf_section_data (tsec) != NULL
1607 && (elf_section_flags (tsec) & SHF_X86_64_LARGE) != 0)
1608 return TRUE;
1609
8b43e456
L		 1610 /* Skip since R_X86_64_PC32/R_X86_64_32/R_X86_64_32S may overflow. */
1611 if (no_overflow)
1612 return TRUE;
c175a657 1613
dc089072 1614convert:
c175a657
L		 1615 if (opcode == 0xff)
1616 {
1617 /* We have "call/jmp *foo@GOTPCREL(%rip)". */
1618 unsigned int nop;
1619 unsigned int disp;
1620 bfd_vma nop_offset;
1621
1622 /* Convert R_X86_64_GOTPCRELX and R_X86_64_REX_GOTPCRELX to
1623 R_X86_64_PC32. */
1624 modrm = bfd_get_8 (abfd, contents + roff - 1);
1625 if (modrm == 0x25)
1626 {
1627 /* Convert to "jmp foo nop". */
1628 modrm = 0xe9;
1629 nop = NOP_OPCODE;
1630 nop_offset = irel->r_offset + 3;
1631 disp = bfd_get_32 (abfd, contents + irel->r_offset);
1632 irel->r_offset -= 1;
1633 bfd_put_32 (abfd, disp, contents + irel->r_offset);
1634 }
1635 else
1636 {
0afcef53
L		 1637 struct elf_x86_link_hash_entry *eh
1638 = (struct elf_x86_link_hash_entry *) h;
e2cbcd91 1639
c175a657
L		 1640 /* Convert to "nop call foo". ADDR_PREFIX_OPCODE
1641 is a nop prefix. */
1642 modrm = 0xe8;
e2cbcd91
L		 1643 /* To support TLS optimization, always use addr32 prefix for
1644 "call *__tls_get_addr@GOTPCREL(%rip)". */
1d4af308 1645 if (eh && eh->tls_get_addr)
c175a657 1646 {
e2cbcd91
L		 1647 nop = 0x67;
1648 nop_offset = irel->r_offset - 2;
c175a657
L		 1649 }
1650 else
e2cbcd91
L		 1651 {
1652 nop = link_info->call_nop_byte;
1653 if (link_info->call_nop_as_suffix)
1654 {
1655 nop_offset = irel->r_offset + 3;
1656 disp = bfd_get_32 (abfd, contents + irel->r_offset);
1657 irel->r_offset -= 1;
1658 bfd_put_32 (abfd, disp, contents + irel->r_offset);
1659 }
1660 else
1661 nop_offset = irel->r_offset - 2;
1662 }
c175a657
L		 1663 }
1664 bfd_put_8 (abfd, nop, contents + nop_offset);
1665 bfd_put_8 (abfd, modrm, contents + irel->r_offset - 1);
1666 r_type = R_X86_64_PC32;
1667 }
1668 else
1669 {
1670 unsigned int rex;
1671 unsigned int rex_mask = REX_R;
1672
1673 if (r_type == R_X86_64_REX_GOTPCRELX)
1674 rex = bfd_get_8 (abfd, contents + roff - 3);
1675 else
1676 rex = 0;
1677
1678 if (opcode == 0x8b)
1679 {
1680 if (to_reloc_pc32)
1681 {
1682 /* Convert "mov foo@GOTPCREL(%rip), %reg" to
1683 "lea foo(%rip), %reg". */
1684 opcode = 0x8d;
1685 r_type = R_X86_64_PC32;
1686 }
1687 else
1688 {
1689 /* Convert "mov foo@GOTPCREL(%rip), %reg" to
1690 "mov $foo, %reg". */
1691 opcode = 0xc7;
1692 modrm = bfd_get_8 (abfd, contents + roff - 1);
1693 modrm = 0xc0 | (modrm & 0x38) >> 3;
1694 if ((rex & REX_W) != 0
1695 && ABI_64_P (link_info->output_bfd))
1696 {
1697 /* Keep the REX_W bit in REX byte for LP64. */
1698 r_type = R_X86_64_32S;
1699 goto rewrite_modrm_rex;
1700 }
1701 else
1702 {
1703 /* If the REX_W bit in REX byte isn't needed,
1704 use R_X86_64_32 and clear the W bit to avoid
1705 sign-extend imm32 to imm64. */
1706 r_type = R_X86_64_32;
1707 /* Clear the W bit in REX byte. */
1708 rex_mask |= REX_W;
1709 goto rewrite_modrm_rex;
1710 }
1711 }
1712 }
1713 else
1714 {
1715 /* R_X86_64_PC32 isn't supported. */
1716 if (to_reloc_pc32)
1717 return TRUE;
1718
1719 modrm = bfd_get_8 (abfd, contents + roff - 1);
1720 if (opcode == 0x85)
1721 {
1722 /* Convert "test %reg, foo@GOTPCREL(%rip)" to
1723 "test $foo, %reg". */
1724 modrm = 0xc0 | (modrm & 0x38) >> 3;
1725 opcode = 0xf7;
1726 }
1727 else
1728 {
1729 /* Convert "binop foo@GOTPCREL(%rip), %reg" to
1730 "binop $foo, %reg". */
1731 modrm = 0xc0 | (modrm & 0x38) >> 3 | (opcode & 0x3c);
1732 opcode = 0x81;
1733 }
1734
1735 /* Use R_X86_64_32 with 32-bit operand to avoid relocation
1736 overflow when sign-extending imm32 to imm64. */
1737 r_type = (rex & REX_W) != 0 ? R_X86_64_32S : R_X86_64_32;
1738
1739rewrite_modrm_rex:
1740 bfd_put_8 (abfd, modrm, contents + roff - 1);
1741
1742 if (rex)
1743 {
1744 /* Move the R bit to the B bit in REX byte. */
1745 rex = (rex & ~rex_mask) | (rex & REX_R) >> 2;
1746 bfd_put_8 (abfd, rex, contents + roff - 3);
1747 }
1748
1749 /* No addend for R_X86_64_32/R_X86_64_32S relocations. */
1750 irel->r_addend = 0;
1751 }
1752
1753 bfd_put_8 (abfd, opcode, contents + roff - 2);
1754 }
1755
6999821f 1756 *r_type_p = r_type;
78984959
L		 1757 irel->r_info = htab->r_info (r_symndx,
1758 r_type | R_X86_64_converted_reloc_bit);
c175a657
L		 1759
1760 *converted = TRUE;
1761
1762 return TRUE;
1763}
1764
70256ad8 1765/* Look through the relocs for a section during the first phase, and
c434dee6
AJ		 1766 calculate needed space in the global offset table, procedure
1767 linkage table, and dynamic reloc sections. */
70256ad8 1768
b34976b6 1769static bfd_boolean
351f65ca
L		 1770elf_x86_64_check_relocs (bfd *abfd, struct bfd_link_info *info,
1771 asection *sec,
1772 const Elf_Internal_Rela *relocs)
70256ad8 1773{
0afcef53 1774 struct elf_x86_link_hash_table *htab;
70256ad8
AJ		 1775 Elf_Internal_Shdr *symtab_hdr;
1776 struct elf_link_hash_entry **sym_hashes;
70256ad8
AJ		 1777 const Elf_Internal_Rela *rel;
1778 const Elf_Internal_Rela *rel_end;
70256ad8 1779 asection *sreloc;
bedfd056 1780 bfd_byte *contents;
5e5e02ae 1781 bfd_boolean converted;
70256ad8 1782
0e1862bb 1783 if (bfd_link_relocatable (info))
b34976b6 1784 return TRUE;
70256ad8 1785
081b1afe
L		 1786 /* Don't do anything special with non-loaded, non-alloced sections.
1787 In particular, any relocs in such sections should not affect GOT
1788 and PLT reference counting (ie. we don't allow them to create GOT
1789 or PLT entries), there's no possibility or desire to optimize TLS
1790 relocs, and there's not much point in propagating relocs to shared
1791 libs that the dynamic linker won't relocate. */
1792 if ((sec->flags & SEC_ALLOC) == 0)
1793 return TRUE;
1794
0afcef53 1795 htab = elf_x86_hash_table (info, X86_64_ELF_DATA);
4dfe6ac6 1796 if (htab == NULL)
afd9acee
L		 1797 {
1798 sec->check_relocs_failed = 1;
1799 return FALSE;
1800 }
4dfe6ac6 1801
fe53b4a4
L		 1802 BFD_ASSERT (is_x86_elf (abfd, htab));
1803
bedfd056
L		 1804 /* Get the section contents. */
1805 if (elf_section_data (sec)->this_hdr.contents != NULL)
1806 contents = elf_section_data (sec)->this_hdr.contents;
1807 else if (!bfd_malloc_and_get_section (abfd, sec, &contents))
1808 {
1809 sec->check_relocs_failed = 1;
1810 return FALSE;
1811 }
1812
0ffa91dd 1813 symtab_hdr = &elf_symtab_hdr (abfd);
70256ad8 1814 sym_hashes = elf_sym_hashes (abfd);
70256ad8 1815
5e5e02ae
L		 1816 converted = FALSE;
1817
c434dee6 1818 sreloc = NULL;
cbe950e9 1819
70256ad8
AJ		 1820 rel_end = relocs + sec->reloc_count;
1821 for (rel = relocs; rel < rel_end; rel++)
1822 {
bffbf940 1823 unsigned int r_type;
d42c267e 1824 unsigned int r_symndx;
70256ad8 1825 struct elf_link_hash_entry *h;
0afcef53 1826 struct elf_x86_link_hash_entry *eh;
4c544807
L		 1827 Elf_Internal_Sym *isym;
1828 const char *name;
06a6a421 1829 bfd_boolean size_reloc;
6999821f 1830 bfd_boolean converted_reloc;
70256ad8 1831
351f65ca
L		 1832 r_symndx = htab->r_sym (rel->r_info);
1833 r_type = ELF32_R_TYPE (rel->r_info);
c434dee6
AJ		 1834
1835 if (r_symndx >= NUM_SHDR_ENTRIES (symtab_hdr))
1836 {
695344c0 1837 /* xgettext:c-format */
4eca0228
AM		 1838 _bfd_error_handler (_("%B: bad symbol index: %d"),
1839 abfd, r_symndx);
afd9acee 1840 goto error_return;
c434dee6
AJ		 1841 }
1842
70256ad8 1843 if (r_symndx < symtab_hdr->sh_info)
c25bc9fc
L		 1844 {
1845 /* A local symbol. */
c2e61a4e
L		 1846 isym = bfd_sym_from_r_symndx (&htab->sym_cache,
1847 abfd, r_symndx);
1848 if (isym == NULL)
afd9acee 1849 goto error_return;
c25bc9fc
L		 1850
1851 /* Check relocation against local STT_GNU_IFUNC symbol. */
351f65ca 1852 if (ELF_ST_TYPE (isym->st_info) == STT_GNU_IFUNC)
c25bc9fc 1853 {
0afcef53
L		 1854 h = _bfd_elf_x86_get_local_sym_hash (htab, abfd, rel,
1855 TRUE);
c25bc9fc 1856 if (h == NULL)
afd9acee 1857 goto error_return;
6bbec505 1858
c25bc9fc 1859 /* Fake a STT_GNU_IFUNC symbol. */
6322e5c5
L		 1860 h->root.root.string = bfd_elf_sym_name (abfd, symtab_hdr,
1861 isym, NULL);
c25bc9fc
L		 1862 h->type = STT_GNU_IFUNC;
1863 h->def_regular = 1;
1864 h->ref_regular = 1;
1865 h->forced_local = 1;
1866 h->root.type = bfd_link_hash_defined;
1867 }
1868 else
1869 h = NULL;
1870 }
70256ad8 1871 else
71cb9464 1872 {
4c544807 1873 isym = NULL;
71cb9464
L		 1874 h = sym_hashes[r_symndx - symtab_hdr->sh_info];
1875 while (h->root.type == bfd_link_hash_indirect
1876 || h->root.type == bfd_link_hash_warning)
1877 h = (struct elf_link_hash_entry *) h->root.u.i.link;
c25bc9fc 1878 }
cbe950e9 1879
d1534d16
L		 1880 /* Check invalid x32 relocations. */
1881 if (!ABI_64_P (abfd))
1882 switch (r_type)
1883 {
1884 default:
1885 break;
1886
d1534d16
L		 1887 case R_X86_64_DTPOFF64:
1888 case R_X86_64_TPOFF64:
1889 case R_X86_64_PC64:
1890 case R_X86_64_GOTOFF64:
1891 case R_X86_64_GOT64:
1892 case R_X86_64_GOTPCREL64:
1893 case R_X86_64_GOTPC64:
1894 case R_X86_64_GOTPLT64:
1895 case R_X86_64_PLTOFF64:
1896 {
1897 if (h)
1898 name = h->root.root.string;
1899 else
1900 name = bfd_elf_sym_name (abfd, symtab_hdr, isym,
1901 NULL);
4eca0228 1902 _bfd_error_handler
695344c0 1903 /* xgettext:c-format */
d1534d16
L		 1904 (_("%B: relocation %s against symbol `%s' isn't "
1905 "supported in x32 mode"), abfd,
1906 x86_64_elf_howto_table[r_type].name, name);
1907 bfd_set_error (bfd_error_bad_value);
afd9acee 1908 goto error_return;
d1534d16
L		 1909 }
1910 break;
1911 }
1912
c25bc9fc
L		 1913 if (h != NULL)
1914 {
ad1e85de
L		 1915 /* It is referenced by a non-shared object. */
1916 h->ref_regular = 1;
bc4e12de 1917 h->root.non_ir_ref_regular = 1;
13a2df29
L		 1918
1919 if (h->type == STT_GNU_IFUNC)
1920 elf_tdata (info->output_bfd)->has_gnu_symbols
1921 |= elf_gnu_symbol_ifunc;
71cb9464 1922 }
70256ad8 1923
6999821f
L		 1924 converted_reloc = FALSE;
1925 if ((r_type == R_X86_64_GOTPCREL
1926 || r_type == R_X86_64_GOTPCRELX
1927 || r_type == R_X86_64_REX_GOTPCRELX)
1928 && (h == NULL || h->type != STT_GNU_IFUNC))
1929 {
1930 Elf_Internal_Rela *irel = (Elf_Internal_Rela *) rel;
1931 if (!elf_x86_64_convert_load_reloc (abfd, contents, &r_type,
1932 irel, h, &converted_reloc,
1933 info))
1934 goto error_return;
5e5e02ae
L		 1935
1936 if (converted_reloc)
1937 converted = TRUE;
6999821f
L		 1938 }
1939
bedfd056 1940 if (! elf_x86_64_tls_transition (info, abfd, sec, contents,
351f65ca
L		 1941 symtab_hdr, sym_hashes,
1942 &r_type, GOT_UNKNOWN,
bedfd056 1943 rel, rel_end, h, r_symndx, FALSE))
afd9acee 1944 goto error_return;
142411ca 1945
0afcef53 1946 eh = (struct elf_x86_link_hash_entry *) h;
bffbf940 1947 switch (r_type)
70256ad8 1948 {
bffbf940 1949 case R_X86_64_TLSLD:
0afcef53 1950 htab->tls_ld_or_ldm_got.refcount += 1;
bffbf940
JJ		 1951 goto create_got;
1952
1953 case R_X86_64_TPOFF32:
0e1862bb 1954 if (!bfd_link_executable (info) && ABI_64_P (abfd))
aab921ad 1955 return elf_x86_64_need_pic (info, abfd, sec, h, symtab_hdr, isym,
338c190a 1956 &x86_64_elf_howto_table[r_type]);
aec6b87e
L		 1957 if (eh != NULL)
1958 eh->has_got_reloc = 1;
bffbf940 1959 break;
c434dee6 1960
bffbf940 1961 case R_X86_64_GOTTPOFF:
0e1862bb 1962 if (!bfd_link_executable (info))
bffbf940
JJ		 1963 info->flags |= DF_STATIC_TLS;
1964 /* Fall through */
70256ad8 1965
bffbf940
JJ		 1966 case R_X86_64_GOT32:
1967 case R_X86_64_GOTPCREL:
56ceb5b5
L		 1968 case R_X86_64_GOTPCRELX:
1969 case R_X86_64_REX_GOTPCRELX:
bffbf940 1970 case R_X86_64_TLSGD:
7b81dfbb
AJ		 1971 case R_X86_64_GOT64:
1972 case R_X86_64_GOTPCREL64:
1973 case R_X86_64_GOTPLT64:
67a4f2b7
AO		 1974 case R_X86_64_GOTPC32_TLSDESC:
1975 case R_X86_64_TLSDESC_CALL:
bffbf940
JJ		 1976 /* This symbol requires a global offset table entry. */
1977 {
1978 int tls_type, old_tls_type;
1979
1980 switch (r_type)
1981 {
1982 default: tls_type = GOT_NORMAL; break;
1983 case R_X86_64_TLSGD: tls_type = GOT_TLS_GD; break;
1984 case R_X86_64_GOTTPOFF: tls_type = GOT_TLS_IE; break;
67a4f2b7
AO		 1985 case R_X86_64_GOTPC32_TLSDESC:
1986 case R_X86_64_TLSDESC_CALL:
1987 tls_type = GOT_TLS_GDESC; break;
bffbf940
JJ		 1988 }
1989
1990 if (h != NULL)
1991 {
1992 h->got.refcount += 1;
aec6b87e 1993 old_tls_type = eh->tls_type;
bffbf940
JJ		 1994 }
1995 else
1996 {
1997 bfd_signed_vma *local_got_refcounts;
1998
1999 /* This is a global offset table entry for a local symbol. */
2000 local_got_refcounts = elf_local_got_refcounts (abfd);
2001 if (local_got_refcounts == NULL)
2002 {
2003 bfd_size_type size;
2004
2005 size = symtab_hdr->sh_info;
67a4f2b7
AO		 2006 size *= sizeof (bfd_signed_vma)
2007 + sizeof (bfd_vma) + sizeof (char);
bffbf940
JJ		 2008 local_got_refcounts = ((bfd_signed_vma *)
2009 bfd_zalloc (abfd, size));
2010 if (local_got_refcounts == NULL)
afd9acee 2011 goto error_return;
bffbf940 2012 elf_local_got_refcounts (abfd) = local_got_refcounts;
0afcef53 2013 elf_x86_local_tlsdesc_gotent (abfd)
67a4f2b7 2014 = (bfd_vma *) (local_got_refcounts + symtab_hdr->sh_info);
0afcef53 2015 elf_x86_local_got_tls_type (abfd)
67a4f2b7 2016 = (char *) (local_got_refcounts + 2 * symtab_hdr->sh_info);
bffbf940
JJ		 2017 }
2018 local_got_refcounts[r_symndx] += 1;
2019 old_tls_type
0afcef53 2020 = elf_x86_local_got_tls_type (abfd) [r_symndx];
bffbf940
JJ		 2021 }
2022
2023 /* If a TLS symbol is accessed using IE at least once,
2024 there is no point to use dynamic model for it. */
2025 if (old_tls_type != tls_type && old_tls_type != GOT_UNKNOWN
67a4f2b7
AO		 2026 && (! GOT_TLS_GD_ANY_P (old_tls_type)
2027 || tls_type != GOT_TLS_IE))
bffbf940 2028 {
67a4f2b7 2029 if (old_tls_type == GOT_TLS_IE && GOT_TLS_GD_ANY_P (tls_type))
bffbf940 2030 tls_type = old_tls_type;
67a4f2b7
AO		 2031 else if (GOT_TLS_GD_ANY_P (old_tls_type)
2032 && GOT_TLS_GD_ANY_P (tls_type))
2033 tls_type |= old_tls_type;
bffbf940
JJ		 2034 else
2035 {
09a24cbf 2036 if (h)
4c544807
L		 2037 name = h->root.root.string;
2038 else
2039 name = bfd_elf_sym_name (abfd, symtab_hdr,
2040 isym, NULL);
4eca0228 2041 _bfd_error_handler
695344c0 2042 /* xgettext:c-format */
63a5468a
AM		 2043 (_("%B: '%s' accessed both as normal and"
2044 " thread local symbol"),
4c544807 2045 abfd, name);
68c4a57e 2046 bfd_set_error (bfd_error_bad_value);
afd9acee 2047 goto error_return;
bffbf940
JJ		 2048 }
2049 }
2050
2051 if (old_tls_type != tls_type)
2052 {
aec6b87e
L		 2053 if (eh != NULL)
2054 eh->tls_type = tls_type;
bffbf940 2055 else
0afcef53 2056 elf_x86_local_got_tls_type (abfd) [r_symndx] = tls_type;
bffbf940
JJ		 2057 }
2058 }
c434dee6
AJ		 2059 /* Fall through */
2060
d6ab8113
JB		 2061 case R_X86_64_GOTOFF64:
2062 case R_X86_64_GOTPC32:
7b81dfbb 2063 case R_X86_64_GOTPC64:
bffbf940 2064 create_got:
aec6b87e
L		 2065 if (eh != NULL)
2066 eh->has_got_reloc = 1;
70256ad8
AJ		 2067 break;
2068
2069 case R_X86_64_PLT32:
c3320543 2070 case R_X86_64_PLT32_BND:
70256ad8 2071 /* This symbol requires a procedure linkage table entry. We
407443a3
AJ		 2072 actually build the entry in adjust_dynamic_symbol,
2073 because this might be a case of linking PIC code which is
2074 never referenced by a dynamic object, in which case we
2075 don't need to generate a procedure linkage table entry
2076 after all. */
70256ad8
AJ		 2077
2078 /* If this is a local symbol, we resolve it directly without
407443a3 2079 creating a procedure linkage table entry. */
70256ad8
AJ		 2080 if (h == NULL)
2081 continue;
2082
aec6b87e 2083 eh->has_got_reloc = 1;
f5385ebf 2084 h->needs_plt = 1;
51b64d56 2085 h->plt.refcount += 1;
70256ad8
AJ		 2086 break;
2087
7b81dfbb
AJ		 2088 case R_X86_64_PLTOFF64:
2089 /* This tries to form the 'address' of a function relative
2090 to GOT. For global symbols we need a PLT entry. */
2091 if (h != NULL)
2092 {
2093 h->needs_plt = 1;
2094 h->plt.refcount += 1;
2095 }
2096 goto create_got;
2097
6a3e1bae
L		 2098 case R_X86_64_SIZE32:
2099 case R_X86_64_SIZE64:
06a6a421 2100 size_reloc = TRUE;
6a3e1bae
L		 2101 goto do_size;
2102
248775ba
L		 2103 case R_X86_64_32:
2104 if (!ABI_64_P (abfd))
2105 goto pointer;
1a0670f3 2106 /* Fall through. */
cc78d0af
AJ		 2107 case R_X86_64_8:
2108 case R_X86_64_16:
70256ad8 2109 case R_X86_64_32S:
338c190a
L		 2110 /* Check relocation overflow as these relocs may lead to
2111 run-time relocation overflow. Don't error out for
1b71fb54 2112 sections we don't care about, such as debug sections or
338c190a 2113 when relocation overflow check is disabled. */
4c10bbaa 2114 if (!info->no_reloc_overflow_check
6999821f 2115 && !converted_reloc
338c190a
L		 2116 && (bfd_link_pic (info)
2117 || (bfd_link_executable (info)
2118 && h != NULL
2119 && !h->def_regular
2120 && h->def_dynamic
081b1afe 2121 && (sec->flags & SEC_READONLY) == 0)))
aab921ad 2122 return elf_x86_64_need_pic (info, abfd, sec, h, symtab_hdr, isym,
338c190a 2123 &x86_64_elf_howto_table[r_type]);
1b71fb54
AJ		 2124 /* Fall through. */
2125
c434dee6
AJ		 2126 case R_X86_64_PC8:
2127 case R_X86_64_PC16:
70256ad8 2128 case R_X86_64_PC32:
c3320543 2129 case R_X86_64_PC32_BND:
d6ab8113 2130 case R_X86_64_PC64:
1b71fb54 2131 case R_X86_64_64:
248775ba 2132pointer:
aec6b87e
L		 2133 if (eh != NULL && (sec->flags & SEC_CODE) != 0)
2134 eh->has_non_got_reloc = 1;
bf52d7c7
L		 2135 /* We are called after all symbols have been resolved. Only
2136 relocation against STT_GNU_IFUNC symbol must go through
2137 PLT. */
d1ed1c7d
L		 2138 if (h != NULL
2139 && (bfd_link_executable (info)
bf52d7c7 2140 || h->type == STT_GNU_IFUNC))
c434dee6
AJ		 2141 {
2142 /* If this reloc is in a read-only section, we might
2143 need a copy reloc. We can't check reliably at this
2144 stage whether the section is read-only, as input
2145 sections have not yet been mapped to output sections.
2146 Tentatively set the flag for now, and correct in
2147 adjust_dynamic_symbol. */
f5385ebf 2148 h->non_got_ref = 1;
c434dee6 2149
233cc9c1
L		 2150 /* We may need a .plt entry if the symbol is a function
2151 defined in a shared lib or is a STT_GNU_IFUNC function
2152 referenced from the code or read-only section. */
34bb2571
L		 2153 if (!h->def_regular
2154 || (sec->flags & (SEC_CODE | SEC_READONLY)) != 0)
233cc9c1
L		 2155 h->plt.refcount += 1;
2156
5db4f0d3
L		 2157 if (r_type == R_X86_64_PC32)
2158 {
2159 /* Since something like ".long foo - ." may be used
2160 as pointer, make sure that PLT is used if foo is
2161 a function defined in a shared library. */
2162 if ((sec->flags & SEC_CODE) == 0)
2163 h->pointer_equality_needed = 1;
2164 }
2165 else if (r_type != R_X86_64_PC32_BND
2166 && r_type != R_X86_64_PC64)
04ebc307
L		 2167 {
2168 h->pointer_equality_needed = 1;
2169 /* At run-time, R_X86_64_64 can be resolved for both
2170 x86-64 and x32. But R_X86_64_32 and R_X86_64_32S
2171 can only be resolved for x32. */
2172 if ((sec->flags & SEC_READONLY) == 0
2173 && (r_type == R_X86_64_64
2174 || (!ABI_64_P (abfd)
2175 && (r_type == R_X86_64_32
2176 || r_type == R_X86_64_32S))))
aec6b87e 2177 eh->func_pointer_refcount += 1;
04ebc307 2178 }
c434dee6 2179 }
70256ad8 2180
06a6a421 2181 size_reloc = FALSE;
6a3e1bae 2182do_size:
daf1c414
L		 2183 if (NEED_DYNAMIC_RELOCATION_P (info, h, sec, r_type,
2184 htab->pointer_r_type))
70256ad8 2185 {
e03a8ed8
L		 2186 struct elf_dyn_relocs *p;
2187 struct elf_dyn_relocs **head;
c434dee6
AJ		 2188
2189 /* We must copy these reloc types into the output file.
2190 Create a reloc section in dynobj and make room for
2191 this reloc. */
70256ad8
AJ		 2192 if (sreloc == NULL)
2193 {
83bac4b0 2194 sreloc = _bfd_elf_make_dynamic_reloc_section
82e96e07
L		 2195 (sec, htab->elf.dynobj, ABI_64_P (abfd) ? 3 : 2,
2196 abfd, /*rela?*/ TRUE);
70256ad8 2197
70256ad8 2198 if (sreloc == NULL)
afd9acee 2199 goto error_return;
70256ad8
AJ		 2200 }
2201
c434dee6
AJ		 2202 /* If this is a global symbol, we count the number of
2203 relocations we need for this symbol. */
2204 if (h != NULL)
aec6b87e 2205 head = &eh->dyn_relocs;
c434dee6
AJ		 2206 else
2207 {
2208 /* Track dynamic relocs needed for local syms too.
2209 We really need local syms available to do this
2210 easily. Oh well. */
c434dee6 2211 asection *s;
87d72d41 2212 void **vpp;
87d72d41
AM		 2213
2214 isym = bfd_sym_from_r_symndx (&htab->sym_cache,
2215 abfd, r_symndx);
2216 if (isym == NULL)
afd9acee 2217 goto error_return;
87d72d41
AM		 2218
2219 s = bfd_section_from_elf_index (abfd, isym->st_shndx);
c434dee6 2220 if (s == NULL)
87d72d41 2221 s = sec;
70256ad8 2222
e81d3500
DD		 2223 /* Beware of type punned pointers vs strict aliasing
2224 rules. */
2225 vpp = &(elf_section_data (s)->local_dynrel);
e03a8ed8 2226 head = (struct elf_dyn_relocs **)vpp;
c434dee6 2227 }
70256ad8 2228
c434dee6
AJ		 2229 p = *head;
2230 if (p == NULL || p->sec != sec)
2231 {
2232 bfd_size_type amt = sizeof *p;
d8045f23 2233
e03a8ed8 2234 p = ((struct elf_dyn_relocs *)
c434dee6 2235 bfd_alloc (htab->elf.dynobj, amt));
70256ad8 2236 if (p == NULL)
afd9acee 2237 goto error_return;
c434dee6
AJ		 2238 p->next = *head;
2239 *head = p;
2240 p->sec = sec;
2241 p->count = 0;
2242 p->pc_count = 0;
70256ad8 2243 }
c434dee6
AJ		 2244
2245 p->count += 1;
06a6a421 2246 /* Count size relocation as PC-relative relocation. */
daf1c414 2247 if (X86_PCREL_TYPE_P (r_type) || size_reloc)
c434dee6 2248 p->pc_count += 1;
70256ad8
AJ		 2249 }
2250 break;
fe4770f4
AJ		 2251
2252 /* This relocation describes the C++ object vtable hierarchy.
2253 Reconstruct it for later use during GC. */
2254 case R_X86_64_GNU_VTINHERIT:
c152c796 2255 if (!bfd_elf_gc_record_vtinherit (abfd, sec, h, rel->r_offset))
afd9acee 2256 goto error_return;
fe4770f4
AJ		 2257 break;
2258
2259 /* This relocation describes which C++ vtable entries are actually
2260 used. Record for later use during GC. */
2261 case R_X86_64_GNU_VTENTRY:
d17e0c6e
JB		 2262 BFD_ASSERT (h != NULL);
2263 if (h != NULL
2264 && !bfd_elf_gc_record_vtentry (abfd, sec, h, rel->r_addend))
afd9acee 2265 goto error_return;
fe4770f4 2266 break;
c434dee6
AJ		 2267
2268 default:
2269 break;
70256ad8
AJ		 2270 }
2271 }
2272
bedfd056
L		 2273 if (elf_section_data (sec)->this_hdr.contents != contents)
2274 {
5e5e02ae 2275 if (!converted && !info->keep_memory)
bedfd056
L		 2276 free (contents);
2277 else
2278 {
5e5e02ae
L		 2279 /* Cache the section contents for elf_link_input_bfd if any
2280 load is converted or --no-keep-memory isn't used. */
bedfd056
L		 2281 elf_section_data (sec)->this_hdr.contents = contents;
2282 }
2283 }
2284
5e5e02ae
L		 2285 /* Cache relocations if any load is converted. */
2286 if (elf_section_data (sec)->relocs != relocs && converted)
2287 elf_section_data (sec)->relocs = (Elf_Internal_Rela *) relocs;
2288
b34976b6 2289 return TRUE;
afd9acee
L		 2290
2291error_return:
bedfd056
L		 2292 if (elf_section_data (sec)->this_hdr.contents != contents)
2293 free (contents);
afd9acee
L		 2294 sec->check_relocs_failed = 1;
2295 return FALSE;
70256ad8
AJ		 2296}
2297
bffbf940
JJ		 2298/* Return the relocation value for @tpoff relocation
2299 if STT_TLS virtual address is ADDRESS. */
2300
2301static bfd_vma
351f65ca 2302elf_x86_64_tpoff (struct bfd_link_info *info, bfd_vma address)
bffbf940 2303{
e1918d23 2304 struct elf_link_hash_table *htab = elf_hash_table (info);
7dc98aea
RO		 2305 const struct elf_backend_data *bed = get_elf_backend_data (info->output_bfd);
2306 bfd_vma static_tls_size;
bffbf940
JJ		 2307
2308 /* If tls_segment is NULL, we should have signalled an error already. */
e1918d23 2309 if (htab->tls_sec == NULL)
bffbf940 2310 return 0;
7dc98aea
RO		 2311
2312 /* Consider special static TLS alignment requirements. */
2313 static_tls_size = BFD_ALIGN (htab->tls_size, bed->static_tls_alignment);
2314 return address - static_tls_size - htab->tls_sec->vma;
bffbf940
JJ		 2315}
2316
90f487df
L		 2317/* Is the instruction before OFFSET in CONTENTS a 32bit relative
2318 branch? */
2319
2320static bfd_boolean
2321is_32bit_relative_branch (bfd_byte *contents, bfd_vma offset)
2322{
2323 /* Opcode Instruction
2324 0xe8 call
2325 0xe9 jump
2326 0x0f 0x8x conditional jump */
2327 return ((offset > 0
2328 && (contents [offset - 1] == 0xe8
2329 || contents [offset - 1] == 0xe9))
2330 || (offset > 1
2331 && contents [offset - 2] == 0x0f
2332 && (contents [offset - 1] & 0xf0) == 0x80));
2333}
2334
8d88c4ca
NC		 2335/* Relocate an x86_64 ELF section. */
2336
b34976b6 2337static bfd_boolean
351f65ca
L		 2338elf_x86_64_relocate_section (bfd *output_bfd,
2339 struct bfd_link_info *info,
2340 bfd *input_bfd,
2341 asection *input_section,
2342 bfd_byte *contents,
2343 Elf_Internal_Rela *relocs,
2344 Elf_Internal_Sym *local_syms,
2345 asection **local_sections)
8d88c4ca 2346{
0afcef53 2347 struct elf_x86_link_hash_table *htab;
8d88c4ca
NC		 2348 Elf_Internal_Shdr *symtab_hdr;
2349 struct elf_link_hash_entry **sym_hashes;
2350 bfd_vma *local_got_offsets;
67a4f2b7 2351 bfd_vma *local_tlsdesc_gotents;
c434dee6 2352 Elf_Internal_Rela *rel;
60f2e42e 2353 Elf_Internal_Rela *wrel;
8d88c4ca 2354 Elf_Internal_Rela *relend;
38b12349 2355 unsigned int plt_entry_size;
8d88c4ca 2356
338c190a
L		 2357 /* Skip if check_relocs failed. */
2358 if (input_section->check_relocs_failed)
2359 return FALSE;
2360
0afcef53 2361 htab = elf_x86_hash_table (info, X86_64_ELF_DATA);
4dfe6ac6
NC		 2362 if (htab == NULL)
2363 return FALSE;
fe53b4a4
L		 2364
2365 BFD_ASSERT (is_x86_elf (input_bfd, htab));
2366
765e526c 2367 plt_entry_size = htab->plt.plt_entry_size;
0ffa91dd 2368 symtab_hdr = &elf_symtab_hdr (input_bfd);
8d88c4ca
NC		 2369 sym_hashes = elf_sym_hashes (input_bfd);
2370 local_got_offsets = elf_local_got_offsets (input_bfd);
0afcef53 2371 local_tlsdesc_gotents = elf_x86_local_tlsdesc_gotent (input_bfd);
8d88c4ca 2372
0afcef53 2373 _bfd_x86_elf_set_tls_module_base (info);
9f03412a 2374
60f2e42e 2375 rel = wrel = relocs;
8d88c4ca 2376 relend = relocs + input_section->reloc_count;
60f2e42e 2377 for (; rel < relend; wrel++, rel++)
8d88c4ca 2378 {
419414ea 2379 unsigned int r_type, r_type_tls;
8d88c4ca
NC		 2380 reloc_howto_type *howto;
2381 unsigned long r_symndx;
2382 struct elf_link_hash_entry *h;
0afcef53 2383 struct elf_x86_link_hash_entry *eh;
8d88c4ca
NC		 2384 Elf_Internal_Sym *sym;
2385 asection *sec;
0ff2b86e 2386 bfd_vma off, offplt, plt_offset;
8d88c4ca 2387 bfd_vma relocation;
b34976b6 2388 bfd_boolean unresolved_reloc;
8d88c4ca 2389 bfd_reloc_status_type r;
bffbf940 2390 int tls_type;
0ff2b86e 2391 asection *base_got, *resolved_plt;
1788fc08 2392 bfd_vma st_size;
aec6b87e 2393 bfd_boolean resolved_to_zero;
9e9821dd 2394 bfd_boolean relative_reloc;
78984959 2395 bfd_boolean converted_reloc;
8d88c4ca 2396
351f65ca 2397 r_type = ELF32_R_TYPE (rel->r_info);
fe4770f4
AJ		 2398 if (r_type == (int) R_X86_64_GNU_VTINHERIT
2399 || r_type == (int) R_X86_64_GNU_VTENTRY)
18954b29
L		 2400 {
2401 if (wrel != rel)
2402 *wrel = *rel;
2403 continue;
2404 }
8d88c4ca 2405
78984959
L		 2406 converted_reloc = (r_type & R_X86_64_converted_reloc_bit) != 0;
2407 r_type &= ~R_X86_64_converted_reloc_bit;
2408
9911c0fc 2409 if (r_type >= (int) R_X86_64_standard)
47aeb64c 2410 return _bfd_unrecognized_reloc (input_bfd, input_section, r_type);
8d88c4ca 2411
d7921315 2412 if (r_type != (int) R_X86_64_32
eed180f8 2413 || ABI_64_P (output_bfd))
d7921315
L		 2414 howto = x86_64_elf_howto_table + r_type;
2415 else
2416 howto = (x86_64_elf_howto_table
2417 + ARRAY_SIZE (x86_64_elf_howto_table) - 1);
351f65ca 2418 r_symndx = htab->r_sym (rel->r_info);
8d88c4ca
NC		 2419 h = NULL;
2420 sym = NULL;
2421 sec = NULL;
b34976b6 2422 unresolved_reloc = FALSE;
8d88c4ca 2423 if (r_symndx < symtab_hdr->sh_info)
8da6118f
KH		 2424 {
2425 sym = local_syms + r_symndx;
2426 sec = local_sections[r_symndx];
c434dee6 2427
c25bc9fc
L		 2428 relocation = _bfd_elf_rela_local_sym (output_bfd, sym,
2429 &sec, rel);
1788fc08 2430 st_size = sym->st_size;
c25bc9fc
L		 2431
2432 /* Relocate against local STT_GNU_IFUNC symbol. */
0e1862bb 2433 if (!bfd_link_relocatable (info)
351f65ca 2434 && ELF_ST_TYPE (sym->st_info) == STT_GNU_IFUNC)
c25bc9fc 2435 {
0afcef53
L		 2436 h = _bfd_elf_x86_get_local_sym_hash (htab, input_bfd,
2437 rel, FALSE);
c25bc9fc
L		 2438 if (h == NULL)
2439 abort ();
2440
eed180f8 2441 /* Set STT_GNU_IFUNC symbol value. */
c25bc9fc
L		 2442 h->root.u.def.value = sym->st_value;
2443 h->root.u.def.section = sec;
2444 }
8da6118f 2445 }
8d88c4ca 2446 else
8da6118f 2447 {
c9736ba0 2448 bfd_boolean warned ATTRIBUTE_UNUSED;
62d887d4 2449 bfd_boolean ignored ATTRIBUTE_UNUSED;
c434dee6 2450
b2a8e766
AM		 2451 RELOC_FOR_GLOBAL_SYMBOL (info, input_bfd, input_section, rel,
2452 r_symndx, symtab_hdr, sym_hashes,
2453 h, sec, relocation,
62d887d4 2454 unresolved_reloc, warned, ignored);
1788fc08 2455 st_size = h->size;
8da6118f 2456 }
ab96bf03 2457
dbaa2011 2458 if (sec != NULL && discarded_section (sec))
60f2e42e
L		 2459 {
2460 _bfd_clear_contents (howto, input_bfd, input_section,
2461 contents + rel->r_offset);
2462 wrel->r_offset = rel->r_offset;
2463 wrel->r_info = 0;
2464 wrel->r_addend = 0;
2465
2466 /* For ld -r, remove relocations in debug sections against
2467 sections defined in discarded sections. Not done for
2468 eh_frame editing code expects to be present. */
2469 if (bfd_link_relocatable (info)
2470 && (input_section->flags & SEC_DEBUGGING))
2471 wrel--;
2472
2473 continue;
2474 }
ab96bf03 2475
0e1862bb 2476 if (bfd_link_relocatable (info))
2d5da473
L		 2477 {
2478 if (wrel != rel)
2479 *wrel = *rel;
2480 continue;
2481 }
ab96bf03 2482
1788fc08 2483 if (rel->r_addend == 0 && !ABI_64_P (output_bfd))
64d25c44 2484 {
1788fc08
L		 2485 if (r_type == R_X86_64_64)
2486 {
2487 /* For x32, treat R_X86_64_64 like R_X86_64_32 and
2488 zero-extend it to 64bit if addend is zero. */
2489 r_type = R_X86_64_32;
2490 memset (contents + rel->r_offset + 4, 0, 4);
2491 }
2492 else if (r_type == R_X86_64_SIZE64)
2493 {
2494 /* For x32, treat R_X86_64_SIZE64 like R_X86_64_SIZE32 and
2495 zero-extend it to 64bit if addend is zero. */
2496 r_type = R_X86_64_SIZE32;
2497 memset (contents + rel->r_offset + 4, 0, 4);
2498 }
64d25c44
L		 2499 }
2500
0afcef53 2501 eh = (struct elf_x86_link_hash_entry *) h;
0ff2b86e 2502
cbe950e9
L		 2503 /* Since STT_GNU_IFUNC symbol must go through PLT, we handle
2504 it here if it is defined in a non-shared object. */
2505 if (h != NULL
2506 && h->type == STT_GNU_IFUNC
2507 && h->def_regular)
2508 {
cbe950e9 2509 bfd_vma plt_index;
4c544807 2510 const char *name;
cbe950e9 2511
97dc35c8
L		 2512 if ((input_section->flags & SEC_ALLOC) == 0)
2513 {
2514 /* Dynamic relocs are not propagated for SEC_DEBUGGING
2515 sections because such sections are not SEC_ALLOC and
2516 thus ld.so will not process them. */
2517 if ((input_section->flags & SEC_DEBUGGING) != 0)
0eace210 2518 continue;
97dc35c8
L		 2519 abort ();
2520 }
233cc9c1
L		 2521
2522 switch (r_type)
2523 {
2524 default:
2525 break;
2526
2527 case R_X86_64_GOTPCREL:
2528 case R_X86_64_GOTPCRELX:
2529 case R_X86_64_REX_GOTPCRELX:
2530 case R_X86_64_GOTPCREL64:
2531 base_got = htab->elf.sgot;
2532 off = h->got.offset;
2533
2534 if (base_got == NULL)
2535 abort ();
2536
2537 if (off == (bfd_vma) -1)
2538 {
2539 /* We can't use h->got.offset here to save state, or
2540 even just remember the offset, as finish_dynamic_symbol
2541 would use that as offset into .got. */
2542
2543 if (h->plt.offset == (bfd_vma) -1)
2544 abort ();
2545
2546 if (htab->elf.splt != NULL)
2547 {
38b12349 2548 plt_index = (h->plt.offset / plt_entry_size
765e526c 2549 - htab->plt.has_plt0);
233cc9c1
L		 2550 off = (plt_index + 3) * GOT_ENTRY_SIZE;
2551 base_got = htab->elf.sgotplt;
2552 }
2553 else
2554 {
2555 plt_index = h->plt.offset / plt_entry_size;
2556 off = plt_index * GOT_ENTRY_SIZE;
2557 base_got = htab->elf.igotplt;
2558 }
2559
2560 if (h->dynindx == -1
2561 || h->forced_local
2562 || info->symbolic)
2563 {
2564 /* This references the local defitionion. We must
2565 initialize this entry in the global offset table.
2566 Since the offset must always be a multiple of 8,
2567 we use the least significant bit to record
2568 whether we have initialized it already.
2569
2570 When doing a dynamic link, we create a .rela.got
2571 relocation entry to initialize the value. This
2572 is done in the finish_dynamic_symbol routine. */
2573 if ((off & 1) != 0)
2574 off &= ~1;
2575 else
2576 {
2577 bfd_put_64 (output_bfd, relocation,
2578 base_got->contents + off);
2579 /* Note that this is harmless for the GOTPLT64
2580 case, as -1 | 1 still is -1. */
2581 h->got.offset |= 1;
2582 }
2583 }
2584 }
2585
2586 relocation = (base_got->output_section->vma
2587 + base_got->output_offset + off);
2588
2589 goto do_relocation;
2590 }
2591
2592 if (h->plt.offset == (bfd_vma) -1)
2593 {
2594 /* Handle static pointers of STT_GNU_IFUNC symbols. */
2595 if (r_type == htab->pointer_r_type
2596 && (input_section->flags & SEC_CODE) == 0)
2597 goto do_ifunc_pointer;
2598 goto bad_ifunc_reloc;
2599 }
cbe950e9
L		 2600
2601 /* STT_GNU_IFUNC symbol must go through PLT. */
0ff2b86e
L		 2602 if (htab->elf.splt != NULL)
2603 {
f2c29a16 2604 if (htab->plt_second != NULL)
0ff2b86e 2605 {
f2c29a16
L		 2606 resolved_plt = htab->plt_second;
2607 plt_offset = eh->plt_second.offset;
0ff2b86e
L		 2608 }
2609 else
2610 {
2611 resolved_plt = htab->elf.splt;
2612 plt_offset = h->plt.offset;
2613 }
2614 }
2615 else
2616 {
2617 resolved_plt = htab->elf.iplt;
2618 plt_offset = h->plt.offset;
2619 }
2620
2621 relocation = (resolved_plt->output_section->vma
2622 + resolved_plt->output_offset + plt_offset);
cbe950e9
L		 2623
2624 switch (r_type)
2625 {
2626 default:
233cc9c1 2627bad_ifunc_reloc:
4c544807
L		 2628 if (h->root.root.string)
2629 name = h->root.root.string;
2630 else
2631 name = bfd_elf_sym_name (input_bfd, symtab_hdr, sym,
2632 NULL);
4eca0228 2633 _bfd_error_handler
695344c0 2634 /* xgettext:c-format */
cbe950e9 2635 (_("%B: relocation %s against STT_GNU_IFUNC "
233cc9c1
L		 2636 "symbol `%s' isn't supported"), input_bfd,
2637 howto->name, name);
cbe950e9
L		 2638 bfd_set_error (bfd_error_bad_value);
2639 return FALSE;
2640
2641 case R_X86_64_32S:
0e1862bb 2642 if (bfd_link_pic (info))
cbe950e9 2643 abort ();
710ab287
L		 2644 goto do_relocation;
2645
248775ba
L		 2646 case R_X86_64_32:
2647 if (ABI_64_P (output_bfd))
2648 goto do_relocation;
17672001 2649 /* FALLTHROUGH */
eed180f8 2650 case R_X86_64_64:
233cc9c1 2651do_ifunc_pointer:
710ab287
L		 2652 if (rel->r_addend != 0)
2653 {
4c544807
L		 2654 if (h->root.root.string)
2655 name = h->root.root.string;
2656 else
2657 name = bfd_elf_sym_name (input_bfd, symtab_hdr,
2658 sym, NULL);
4eca0228 2659 _bfd_error_handler
695344c0 2660 /* xgettext:c-format */
710ab287 2661 (_("%B: relocation %s against STT_GNU_IFUNC "
d42c267e 2662 "symbol `%s' has non-zero addend: %Ld"),
ef77d6af 2663 input_bfd, howto->name, name, rel->r_addend);
710ab287
L		 2664 bfd_set_error (bfd_error_bad_value);
2665 return FALSE;
2666 }
2667
2668 /* Generate dynamic relcoation only when there is a
233cc9c1
L		 2669 non-GOT reference in a shared object or there is no
2670 PLT. */
2671 if ((bfd_link_pic (info) && h->non_got_ref)
2672 || h->plt.offset == (bfd_vma) -1)
710ab287
L		 2673 {
2674 Elf_Internal_Rela outrel;
710ab287
L		 2675 asection *sreloc;
2676
c25bc9fc
L		 2677 /* Need a dynamic relocation to get the real function
2678 address. */
710ab287
L		 2679 outrel.r_offset = _bfd_elf_section_offset (output_bfd,
2680 info,
2681 input_section,
2682 rel->r_offset);
2683 if (outrel.r_offset == (bfd_vma) -1
2684 || outrel.r_offset == (bfd_vma) -2)
2685 abort ();
2686
2687 outrel.r_offset += (input_section->output_section->vma
2688 + input_section->output_offset);
2689
2690 if (h->dynindx == -1
44c4ea11 2691 || h->forced_local
0e1862bb 2692 || bfd_link_executable (info))
710ab287 2693 {
6322e5c5
L		 2694 info->callbacks->minfo (_("Local IFUNC function `%s' in %B\n"),
2695 h->root.root.string,
2696 h->root.u.def.section->owner);
2697
710ab287 2698 /* This symbol is resolved locally. */
56b8aada
L		 2699 outrel.r_info = htab->r_info (0, R_X86_64_IRELATIVE);
2700 outrel.r_addend = (h->root.u.def.value
2701 + h->root.u.def.section->output_section->vma
2702 + h->root.u.def.section->output_offset);
710ab287
L		 2703 }
2704 else
2705 {
351f65ca 2706 outrel.r_info = htab->r_info (h->dynindx, r_type);
710ab287
L		 2707 outrel.r_addend = 0;
2708 }
2709
233cc9c1
L		 2710 /* Dynamic relocations are stored in
2711 1. .rela.ifunc section in PIC object.
2712 2. .rela.got section in dynamic executable.
2713 3. .rela.iplt section in static executable. */
2714 if (bfd_link_pic (info))
2715 sreloc = htab->elf.irelifunc;
2716 else if (htab->elf.splt != NULL)
2717 sreloc = htab->elf.srelgot;
2718 else
2719 sreloc = htab->elf.irelplt;
351f65ca 2720 elf_append_rela (output_bfd, sreloc, &outrel);
710ab287
L		 2721
2722 /* If this reloc is against an external symbol, we
2723 do not want to fiddle with the addend. Otherwise,
2724 we need to include the symbol value so that it
2725 becomes an addend for the dynamic reloc. For an
2726 internal symbol, we have updated addend. */
56b8aada 2727 continue;
710ab287 2728 }
17672001 2729 /* FALLTHROUGH */
cbe950e9 2730 case R_X86_64_PC32:
c3320543 2731 case R_X86_64_PC32_BND:
cbe950e9
L		 2732 case R_X86_64_PC64:
2733 case R_X86_64_PLT32:
c3320543 2734 case R_X86_64_PLT32_BND:
cbe950e9 2735 goto do_relocation;
cbe950e9
L		 2736 }
2737 }
2738
aec6b87e 2739 resolved_to_zero = (eh != NULL
c5bce5c6 2740 && UNDEFINED_WEAK_RESOLVED_TO_ZERO (info, eh));
aec6b87e 2741
70256ad8
AJ		 2742 /* When generating a shared object, the relocations handled here are
2743 copied into the output file to be resolved at run time. */
2744 switch (r_type)
2745 {
2746 case R_X86_64_GOT32:
7b81dfbb 2747 case R_X86_64_GOT64:
70256ad8
AJ		 2748 /* Relocation is to the entry for this symbol in the global
2749 offset table. */
70256ad8 2750 case R_X86_64_GOTPCREL:
56ceb5b5
L		 2751 case R_X86_64_GOTPCRELX:
2752 case R_X86_64_REX_GOTPCRELX:
7b81dfbb
AJ		 2753 case R_X86_64_GOTPCREL64:
2754 /* Use global offset table entry as symbol value. */
2755 case R_X86_64_GOTPLT64:
de194d85 2756 /* This is obsolete and treated the same as GOT64. */
6de2ae4a 2757 base_got = htab->elf.sgot;
7b81dfbb 2758
6de2ae4a 2759 if (htab->elf.sgot == NULL)
c434dee6 2760 abort ();
053579d7 2761
9e9821dd 2762 relative_reloc = FALSE;
51e0a107 2763 if (h != NULL)
70256ad8 2764 {
c434dee6 2765 off = h->got.offset;
7b81dfbb 2766 if (h->needs_plt
eed180f8 2767 && h->plt.offset != (bfd_vma)-1
7b81dfbb
AJ		 2768 && off == (bfd_vma)-1)
2769 {
2770 /* We can't use h->got.offset here to save
2771 state, or even just remember the offset, as
2772 finish_dynamic_symbol would use that as offset into
2773 .got. */
38b12349 2774 bfd_vma plt_index = (h->plt.offset / plt_entry_size
765e526c 2775 - htab->plt.has_plt0);
7b81dfbb 2776 off = (plt_index + 3) * GOT_ENTRY_SIZE;
6de2ae4a 2777 base_got = htab->elf.sgotplt;
7b81dfbb
AJ		 2778 }
2779
2eba97c2 2780 if (RESOLVED_LOCALLY_P (info, h, htab))
51e0a107 2781 {
2eba97c2
L		 2782 /* We must initialize this entry in the global offset
2783 table. Since the offset must always be a multiple
2784 of 8, we use the least significant bit to record
2785 whether we have initialized it already.
51e0a107
JH		 2786
2787 When doing a dynamic link, we create a .rela.got
407443a3
AJ		 2788 relocation entry to initialize the value. This is
2789 done in the finish_dynamic_symbol routine. */
51e0a107
JH		 2790 if ((off & 1) != 0)
2791 off &= ~1;
2792 else
2793 {
2794 bfd_put_64 (output_bfd, relocation,
7b81dfbb
AJ		 2795 base_got->contents + off);
2796 /* Note that this is harmless for the GOTPLT64 case,
eed180f8 2797 as -1 | 1 still is -1. */
51e0a107 2798 h->got.offset |= 1;
9e9821dd 2799
f70656b2 2800 if (GENERATE_RELATIVE_RELOC_P (info, h))
9e9821dd
L		 2801 {
2802 /* If this symbol isn't dynamic in PIC,
2803 generate R_X86_64_RELATIVE here. */
2804 eh->no_finish_dynamic_symbol = 1;
2805 relative_reloc = TRUE;
2806 }
51e0a107
JH		 2807 }
2808 }
053579d7 2809 else
b34976b6 2810 unresolved_reloc = FALSE;
70256ad8 2811 }
51e0a107
JH		 2812 else
2813 {
c434dee6
AJ		 2814 if (local_got_offsets == NULL)
2815 abort ();
51e0a107
JH		 2816
2817 off = local_got_offsets[r_symndx];
2818
2819 /* The offset must always be a multiple of 8. We use
407443a3
AJ		 2820 the least significant bit to record whether we have
2821 already generated the necessary reloc. */
51e0a107
JH		 2822 if ((off & 1) != 0)
2823 off &= ~1;
2824 else
2825 {
c434dee6 2826 bfd_put_64 (output_bfd, relocation,
7b81dfbb 2827 base_got->contents + off);
9e9821dd 2828 local_got_offsets[r_symndx] |= 1;
51e0a107 2829
0e1862bb 2830 if (bfd_link_pic (info))
9e9821dd 2831 relative_reloc = TRUE;
51e0a107 2832 }
51e0a107 2833 }
6a2bda3f 2834
9e9821dd
L		 2835 if (relative_reloc)
2836 {
2837 asection *s;
2838 Elf_Internal_Rela outrel;
2839
2840 /* We need to generate a R_X86_64_RELATIVE reloc
2841 for the dynamic linker. */
2842 s = htab->elf.srelgot;
2843 if (s == NULL)
2844 abort ();
2845
2846 outrel.r_offset = (base_got->output_section->vma
2847 + base_got->output_offset
2848 + off);
2849 outrel.r_info = htab->r_info (0, R_X86_64_RELATIVE);
2850 outrel.r_addend = relocation;
2851 elf_append_rela (output_bfd, s, &outrel);
2852 }
2853
c434dee6
AJ		 2854 if (off >= (bfd_vma) -2)
2855 abort ();
2856
7b81dfbb
AJ		 2857 relocation = base_got->output_section->vma
2858 + base_got->output_offset + off;
56ceb5b5
L		 2859 if (r_type != R_X86_64_GOTPCREL
2860 && r_type != R_X86_64_GOTPCRELX
2861 && r_type != R_X86_64_REX_GOTPCRELX
2862 && r_type != R_X86_64_GOTPCREL64)
6de2ae4a
L		 2863 relocation -= htab->elf.sgotplt->output_section->vma
2864 - htab->elf.sgotplt->output_offset;
c434dee6 2865
70256ad8
AJ		 2866 break;
2867
d6ab8113
JB		 2868 case R_X86_64_GOTOFF64:
2869 /* Relocation is relative to the start of the global offset
2870 table. */
2871
3d949995
L		 2872 /* Check to make sure it isn't a protected function or data
2873 symbol for shared library since it may not be local when
e3c0e327
L		 2874 used as function address or with copy relocation. We also
2875 need to make sure that a symbol is referenced locally. */
0e1862bb 2876 if (bfd_link_pic (info) && h)
d6ab8113 2877 {
e3c0e327
L		 2878 if (!h->def_regular)
2879 {
2880 const char *v;
2881
2882 switch (ELF_ST_VISIBILITY (h->other))
2883 {
2884 case STV_HIDDEN:
2885 v = _("hidden symbol");
2886 break;
2887 case STV_INTERNAL:
2888 v = _("internal symbol");
2889 break;
2890 case STV_PROTECTED:
2891 v = _("protected symbol");
2892 break;
2893 default:
2894 v = _("symbol");
2895 break;
2896 }
2897
4eca0228 2898 _bfd_error_handler
695344c0 2899 /* xgettext:c-format */
63a5468a
AM		 2900 (_("%B: relocation R_X86_64_GOTOFF64 against undefined %s"
2901 " `%s' can not be used when making a shared object"),
e3c0e327
L		 2902 input_bfd, v, h->root.root.string);
2903 bfd_set_error (bfd_error_bad_value);
2904 return FALSE;
2905 }
0e1862bb 2906 else if (!bfd_link_executable (info)
6999821f 2907 && !SYMBOL_REFERENCES_LOCAL_P (info, h)
e3c0e327
L		 2908 && (h->type == STT_FUNC
2909 || h->type == STT_OBJECT)
2910 && ELF_ST_VISIBILITY (h->other) == STV_PROTECTED)
2911 {
4eca0228 2912 _bfd_error_handler
695344c0 2913 /* xgettext:c-format */
63a5468a
AM		 2914 (_("%B: relocation R_X86_64_GOTOFF64 against protected %s"
2915 " `%s' can not be used when making a shared object"),
e3c0e327
L		 2916 input_bfd,
2917 h->type == STT_FUNC ? "function" : "data",
2918 h->root.root.string);
2919 bfd_set_error (bfd_error_bad_value);
d6ab8113 2920 return FALSE;
e3c0e327 2921 }
d6ab8113
JB		 2922 }
2923
2924 /* Note that sgot is not involved in this
2925 calculation. We always want the start of .got.plt. If we
2926 defined _GLOBAL_OFFSET_TABLE_ in a different way, as is
2927 permitted by the ABI, we might have to change this
2928 calculation. */
6de2ae4a
L		 2929 relocation -= htab->elf.sgotplt->output_section->vma
2930 + htab->elf.sgotplt->output_offset;
d6ab8113
JB		 2931 break;
2932
2933 case R_X86_64_GOTPC32:
7b81dfbb 2934 case R_X86_64_GOTPC64:
d6ab8113 2935 /* Use global offset table as symbol value. */
6de2ae4a
L		 2936 relocation = htab->elf.sgotplt->output_section->vma
2937 + htab->elf.sgotplt->output_offset;
d6ab8113
JB		 2938 unresolved_reloc = FALSE;
2939 break;
7b81dfbb
AJ		 2940
2941 case R_X86_64_PLTOFF64:
2942 /* Relocation is PLT entry relative to GOT. For local
2943 symbols it's the symbol itself relative to GOT. */
eed180f8 2944 if (h != NULL
7b81dfbb 2945 /* See PLT32 handling. */
9d734efa
L		 2946 && (h->plt.offset != (bfd_vma) -1
2947 || eh->plt_got.offset != (bfd_vma) -1)
6de2ae4a 2948 && htab->elf.splt != NULL)
7b81dfbb 2949 {
9d734efa
L		 2950 if (eh->plt_got.offset != (bfd_vma) -1)
2951 {
2952 /* Use the GOT PLT. */
2953 resolved_plt = htab->plt_got;
2954 plt_offset = eh->plt_got.offset;
2955 }
f2c29a16 2956 else if (htab->plt_second != NULL)
0ff2b86e 2957 {
f2c29a16
L		 2958 resolved_plt = htab->plt_second;
2959 plt_offset = eh->plt_second.offset;
0ff2b86e
L		 2960 }
2961 else
2962 {
2963 resolved_plt = htab->elf.splt;
2964 plt_offset = h->plt.offset;
2965 }
2966
2967 relocation = (resolved_plt->output_section->vma
2968 + resolved_plt->output_offset
2969 + plt_offset);
7b81dfbb
AJ		 2970 unresolved_reloc = FALSE;
2971 }
2972
6de2ae4a
L		 2973 relocation -= htab->elf.sgotplt->output_section->vma
2974 + htab->elf.sgotplt->output_offset;
7b81dfbb 2975 break;
d6ab8113 2976
70256ad8 2977 case R_X86_64_PLT32:
c3320543 2978 case R_X86_64_PLT32_BND:
70256ad8
AJ		 2979 /* Relocation is to the entry for this symbol in the
2980 procedure linkage table. */
2981
2982 /* Resolve a PLT32 reloc against a local symbol directly,
407443a3 2983 without using the procedure linkage table. */
70256ad8
AJ		 2984 if (h == NULL)
2985 break;
2986
dd7e64d4
L		 2987 if ((h->plt.offset == (bfd_vma) -1
2988 && eh->plt_got.offset == (bfd_vma) -1)
6de2ae4a 2989 || htab->elf.splt == NULL)
70256ad8
AJ		 2990 {
2991 /* We didn't make a PLT entry for this symbol. This
407443a3
AJ		 2992 happens when statically linking PIC code, or when
2993 using -Bsymbolic. */
70256ad8
AJ		 2994 break;
2995 }
2996
dd7e64d4 2997 if (h->plt.offset != (bfd_vma) -1)
0ff2b86e 2998 {
f2c29a16 2999 if (htab->plt_second != NULL)
dd7e64d4 3000 {
f2c29a16
L		 3001 resolved_plt = htab->plt_second;
3002 plt_offset = eh->plt_second.offset;
dd7e64d4
L		 3003 }
3004 else
3005 {
3006 resolved_plt = htab->elf.splt;
3007 plt_offset = h->plt.offset;
3008 }
0ff2b86e
L		 3009 }
3010 else
3011 {
dd7e64d4
L		 3012 /* Use the GOT PLT. */
3013 resolved_plt = htab->plt_got;
3014 plt_offset = eh->plt_got.offset;
0ff2b86e
L		 3015 }
3016
3017 relocation = (resolved_plt->output_section->vma
3018 + resolved_plt->output_offset
3019 + plt_offset);
b34976b6 3020 unresolved_reloc = FALSE;
70256ad8
AJ		 3021 break;
3022
1788fc08
L		 3023 case R_X86_64_SIZE32:
3024 case R_X86_64_SIZE64:
1788fc08
L		 3025 /* Set to symbol size. */
3026 relocation = st_size;
3027 goto direct;
3028
fd8ab9e5
AJ		 3029 case R_X86_64_PC8:
3030 case R_X86_64_PC16:
3031 case R_X86_64_PC32:
c3320543 3032 case R_X86_64_PC32_BND:
6333bc0d 3033 /* Don't complain about -fPIC if the symbol is undefined when
7073b5b9
L		 3034 building executable unless it is unresolved weak symbol or
3035 -z nocopyreloc is used. */
aec6b87e 3036 if ((input_section->flags & SEC_ALLOC) != 0
90f487df 3037 && (input_section->flags & SEC_READONLY) != 0
6333bc0d 3038 && h != NULL
aec6b87e 3039 && ((bfd_link_executable (info)
7073b5b9
L		 3040 && ((h->root.type == bfd_link_hash_undefweak
3041 && !resolved_to_zero)
a5b4ee94
L		 3042 || ((info->nocopyreloc
3043 || (eh->def_protected
3044 && elf_has_no_copy_on_protected (h->root.u.def.section->owner)))
7073b5b9
L		 3045 && h->def_dynamic
3046 && !(h->root.u.def.section->flags & SEC_CODE))))
c5bb8910 3047 || bfd_link_dll (info)))
6610a52d 3048 {
41bed6dd
L		 3049 bfd_boolean fail = FALSE;
3050 bfd_boolean branch
c3320543
L		 3051 = ((r_type == R_X86_64_PC32
3052 || r_type == R_X86_64_PC32_BND)
41bed6dd
L		 3053 && is_32bit_relative_branch (contents, rel->r_offset));
3054
6999821f 3055 if (SYMBOL_REFERENCES_LOCAL_P (info, h))
41bed6dd
L		 3056 {
3057 /* Symbol is referenced locally. Make sure it is
3058 defined locally or for a branch. */
8170f769
L		 3059 fail = (!(h->def_regular || ELF_COMMON_DEF_P (h))
3060 && !branch);
41bed6dd 3061 }
aec6b87e 3062 else if (!(bfd_link_pie (info)
bc696fd5 3063 && (h->needs_copy || eh->needs_copy)))
41bed6dd 3064 {
9a926d55
L		 3065 /* Symbol doesn't need copy reloc and isn't referenced
3066 locally. We only allow branch to symbol with
3067 non-default visibility. */
41bed6dd
L		 3068 fail = (!branch
3069 || ELF_ST_VISIBILITY (h->other) == STV_DEFAULT);
3070 }
3071
3072 if (fail)
aab921ad 3073 return elf_x86_64_need_pic (info, input_bfd, input_section,
338c190a 3074 h, NULL, NULL, howto);
6610a52d
L		 3075 }
3076 /* Fall through. */
3077
70256ad8
AJ		 3078 case R_X86_64_8:
3079 case R_X86_64_16:
3080 case R_X86_64_32:
d6ab8113 3081 case R_X86_64_PC64:
6b3db546 3082 case R_X86_64_64:
80643fbc 3083 /* FIXME: The ABI says the linker should make sure the value is
407443a3 3084 the same when it's zeroextended to 64 bit. */
c434dee6 3085
1788fc08 3086direct:
b1e24c02 3087 if ((input_section->flags & SEC_ALLOC) == 0)
c434dee6
AJ		 3088 break;
3089
9a926d55 3090 /* Don't copy a pc-relative relocation into the output file
6333bc0d 3091 if the symbol needs copy reloc or the symbol is undefined
04ebc307 3092 when building executable. Copy dynamic function pointer
aec6b87e
L		 3093 relocations. Don't generate dynamic relocations against
3094 resolved undefined weak symbols in PIE. */
0e1862bb 3095 if ((bfd_link_pic (info)
aec6b87e 3096 && !(bfd_link_pie (info)
fd9edc90 3097 && h != NULL
6333bc0d
L		 3098 && (h->needs_copy
3099 || eh->needs_copy
3100 || h->root.type == bfd_link_hash_undefined)
daf1c414 3101 && (X86_PCREL_TYPE_P (r_type)
d8457a04
L		 3102 || r_type == R_X86_64_SIZE32
3103 || r_type == R_X86_64_SIZE64))
4bc6e03a 3104 && (h == NULL
aec6b87e
L		 3105 || ((ELF_ST_VISIBILITY (h->other) == STV_DEFAULT
3106 && !resolved_to_zero)
3107 || h->root.type != bfd_link_hash_undefweak))
daf1c414 3108 && ((! X86_PCREL_TYPE_P (r_type)
1788fc08
L		 3109 && r_type != R_X86_64_SIZE32
3110 && r_type != R_X86_64_SIZE64)
d8045f23 3111 || ! SYMBOL_CALLS_LOCAL (info, h)))
d40d037c 3112 || (ELIMINATE_COPY_RELOCS
0e1862bb 3113 && !bfd_link_pic (info)
c434dee6
AJ		 3114 && h != NULL
3115 && h->dynindx != -1
aec6b87e
L		 3116 && (!h->non_got_ref
3117 || eh->func_pointer_refcount > 0
3118 || (h->root.type == bfd_link_hash_undefweak
3119 && !resolved_to_zero))
bae420ef
L		 3120 && ((h->def_dynamic && !h->def_regular)
3121 /* Undefined weak symbol is bound locally when
3122 PIC is false. */
0f88be7a 3123 || h->root.type == bfd_link_hash_undefined)))
70256ad8
AJ		 3124 {
3125 Elf_Internal_Rela outrel;
b34976b6 3126 bfd_boolean skip, relocate;
c434dee6 3127 asection *sreloc;
70256ad8
AJ		 3128
3129 /* When generating a shared object, these relocations
3130 are copied into the output file to be resolved at run
407443a3 3131 time. */
b34976b6
AM		 3132 skip = FALSE;
3133 relocate = FALSE;
70256ad8 3134
c629eae0
JJ		 3135 outrel.r_offset =
3136 _bfd_elf_section_offset (output_bfd, info, input_section,
c434dee6 3137 rel->r_offset);
c629eae0 3138 if (outrel.r_offset == (bfd_vma) -1)
b34976b6 3139 skip = TRUE;
0fb19cbc 3140 else if (outrel.r_offset == (bfd_vma) -2)
b34976b6 3141 skip = TRUE, relocate = TRUE;
70256ad8
AJ		 3142
3143 outrel.r_offset += (input_section->output_section->vma
3144 + input_section->output_offset);
3145
3146 if (skip)
0bb2d96a 3147 memset (&outrel, 0, sizeof outrel);
c434dee6 3148
fd8ab9e5
AJ		 3149 /* h->dynindx may be -1 if this symbol was marked to
3150 become local. */
3151 else if (h != NULL
c434dee6 3152 && h->dynindx != -1
daf1c414 3153 && (X86_PCREL_TYPE_P (r_type)
4e0c91e4
L		 3154 || !(bfd_link_executable (info)
3155 || SYMBOLIC_BIND (info, h))
d8045f23 3156 || ! h->def_regular))
70256ad8 3157 {
351f65ca 3158 outrel.r_info = htab->r_info (h->dynindx, r_type);
c434dee6 3159 outrel.r_addend = rel->r_addend;
70256ad8
AJ		 3160 }
3161 else
3162 {
4c10bbaa
L		 3163 /* This symbol is local, or marked to become local.
3164 When relocation overflow check is disabled, we
3165 convert R_X86_64_32 to dynamic R_X86_64_RELATIVE. */
3166 if (r_type == htab->pointer_r_type
3167 || (r_type == R_X86_64_32
3168 && info->no_reloc_overflow_check))
607c0e09 3169 {
b34976b6 3170 relocate = TRUE;
351f65ca 3171 outrel.r_info = htab->r_info (0, R_X86_64_RELATIVE);
607c0e09
AS		 3172 outrel.r_addend = relocation + rel->r_addend;
3173 }
64d25c44
L		 3174 else if (r_type == R_X86_64_64
3175 && !ABI_64_P (output_bfd))
3176 {
3177 relocate = TRUE;
3178 outrel.r_info = htab->r_info (0,
3179 R_X86_64_RELATIVE64);
3180 outrel.r_addend = relocation + rel->r_addend;
8cf0d2dd
L		 3181 /* Check addend overflow. */
3182 if ((outrel.r_addend & 0x80000000)
3183 != (rel->r_addend & 0x80000000))
3184 {
3185 const char *name;
268a8d3a 3186 int addend = rel->r_addend;
8cf0d2dd
L		 3187 if (h && h->root.root.string)
3188 name = h->root.root.string;
3189 else
3190 name = bfd_elf_sym_name (input_bfd, symtab_hdr,
3191 sym, NULL);
d42c267e
AM		 3192 _bfd_error_handler
3193 /* xgettext:c-format */
3194 (_("%B: addend %s%#x in relocation %s against "
3195 "symbol `%s' at %#Lx in section `%A' is "
3196 "out of range"),
3197 input_bfd, addend < 0 ? "-" : "", addend,
3198 howto->name, name, rel->r_offset, input_section);
8cf0d2dd
L		 3199 bfd_set_error (bfd_error_bad_value);
3200 return FALSE;
3201 }
64d25c44 3202 }
607c0e09
AS		 3203 else
3204 {
3205 long sindx;
3206
8517fae7 3207 if (bfd_is_abs_section (sec))
607c0e09
AS		 3208 sindx = 0;
3209 else if (sec == NULL || sec->owner == NULL)
3210 {
3211 bfd_set_error (bfd_error_bad_value);
b34976b6 3212 return FALSE;
607c0e09
AS		 3213 }
3214 else
3215 {
3216 asection *osec;
3217
74541ad4
AM		 3218 /* We are turning this relocation into one
3219 against a section symbol. It would be
3220 proper to subtract the symbol's value,
3221 osec->vma, from the emitted reloc addend,
3222 but ld.so expects buggy relocs. */
607c0e09
AS		 3223 osec = sec->output_section;
3224 sindx = elf_section_data (osec)->dynindx;
74541ad4
AM		 3225 if (sindx == 0)
3226 {
3227 asection *oi = htab->elf.text_index_section;
3228 sindx = elf_section_data (oi)->dynindx;
3229 }
3230 BFD_ASSERT (sindx != 0);
607c0e09
AS		 3231 }
3232
351f65ca 3233 outrel.r_info = htab->r_info (sindx, r_type);
607c0e09
AS		 3234 outrel.r_addend = relocation + rel->r_addend;
3235 }
70256ad8
AJ		 3236 }
3237
cbe950e9 3238 sreloc = elf_section_data (input_section)->sreloc;
d8045f23 3239
62d78908
L		 3240 if (sreloc == NULL || sreloc->contents == NULL)
3241 {
3242 r = bfd_reloc_notsupported;
3243 goto check_relocation_error;
3244 }
c434dee6 3245
351f65ca 3246 elf_append_rela (output_bfd, sreloc, &outrel);
70256ad8
AJ		 3247
3248 /* If this reloc is against an external symbol, we do
3249 not want to fiddle with the addend. Otherwise, we
3250 need to include the symbol value so that it becomes
3251 an addend for the dynamic reloc. */
0f88be7a 3252 if (! relocate)
70256ad8
AJ		 3253 continue;
3254 }
3255
3256 break;
3257
bffbf940 3258 case R_X86_64_TLSGD:
67a4f2b7
AO		 3259 case R_X86_64_GOTPC32_TLSDESC:
3260 case R_X86_64_TLSDESC_CALL:
bffbf940 3261 case R_X86_64_GOTTPOFF:
bffbf940
JJ		 3262 tls_type = GOT_UNKNOWN;
3263 if (h == NULL && local_got_offsets)
0afcef53 3264 tls_type = elf_x86_local_got_tls_type (input_bfd) [r_symndx];
bffbf940 3265 else if (h != NULL)
0afcef53 3266 tls_type = elf_x86_hash_entry (h)->tls_type;
142411ca 3267
419414ea 3268 r_type_tls = r_type;
351f65ca
L		 3269 if (! elf_x86_64_tls_transition (info, input_bfd,
3270 input_section, contents,
3271 symtab_hdr, sym_hashes,
419414ea 3272 &r_type_tls, tls_type, rel,
bedfd056 3273 relend, h, r_symndx, TRUE))
534a31f6 3274 return FALSE;
bffbf940 3275
419414ea 3276 if (r_type_tls == R_X86_64_TPOFF32)
bffbf940 3277 {
142411ca
L		 3278 bfd_vma roff = rel->r_offset;
3279
bffbf940 3280 BFD_ASSERT (! unresolved_reloc);
142411ca 3281
419414ea 3282 if (r_type == R_X86_64_TLSGD)
bffbf940 3283 {
52bc799a 3284 /* GD->LE transition. For 64bit, change
e2cbcd91
L		 3285 .byte 0x66; leaq foo@tlsgd(%rip), %rdi
3286 .word 0x6666; rex64; call __tls_get_addr@PLT
3287 or
3288 .byte 0x66; leaq foo@tlsgd(%rip), %rdi
3289 .byte 0x66; rex64
3290 call *__tls_get_addr@GOTPCREL(%rip)
3291 which may be converted to
3292 addr32 call __tls_get_addr
52bc799a 3293 into:
e2cbcd91
L		 3294 movq %fs:0, %rax
3295 leaq foo@tpoff(%rax), %rax
52bc799a 3296 For 32bit, change
e2cbcd91
L		 3297 leaq foo@tlsgd(%rip), %rdi
3298 .word 0x6666; rex64; call __tls_get_addr@PLT
3299 or
3300 leaq foo@tlsgd(%rip), %rdi
3301 .byte 0x66; rex64
3302 call *__tls_get_addr@GOTPCREL(%rip)
3303 which may be converted to
3304 addr32 call __tls_get_addr
52bc799a 3305 into:
e2cbcd91
L		 3306 movl %fs:0, %eax
3307 leaq foo@tpoff(%rax), %rax
5c98a14e 3308 For largepic, change:
e2cbcd91
L		 3309 leaq foo@tlsgd(%rip), %rdi
3310 movabsq $__tls_get_addr@pltoff, %rax
3311 addq %r15, %rax
3312 call *%rax
5c98a14e 3313 into:
e2cbcd91
L		 3314 movq %fs:0, %rax
3315 leaq foo@tpoff(%rax), %rax
3316 nopw 0x0(%rax,%rax,1) */
5c98a14e 3317 int largepic = 0;
e2cbcd91 3318 if (ABI_64_P (output_bfd))
5c98a14e 3319 {
e2cbcd91
L		 3320 if (contents[roff + 5] == 0xb8)
3321 {
3322 memcpy (contents + roff - 3,
3323 "\x64\x48\x8b\x04\x25\0\0\0\0\x48\x8d\x80"
3324 "\0\0\0\0\x66\x0f\x1f\x44\0", 22);
3325 largepic = 1;
3326 }
3327 else
3328 memcpy (contents + roff - 4,
3329 "\x64\x48\x8b\x04\x25\0\0\0\0\x48\x8d\x80\0\0\0",
3330 16);
5c98a14e 3331 }
52bc799a
L		 3332 else
3333 memcpy (contents + roff - 3,
3334 "\x64\x8b\x04\x25\0\0\0\0\x48\x8d\x80\0\0\0",
3335 15);
eb4ff4d6 3336 bfd_put_32 (output_bfd,
351f65ca 3337 elf_x86_64_tpoff (info, relocation),
5c98a14e 3338 contents + roff + 8 + largepic);
e2cbcd91
L		 3339 /* Skip R_X86_64_PC32, R_X86_64_PLT32,
3340 R_X86_64_GOTPCRELX and R_X86_64_PLTOFF64. */
bffbf940 3341 rel++;
60f2e42e 3342 wrel++;
bffbf940
JJ		 3343 continue;
3344 }
419414ea 3345 else if (r_type == R_X86_64_GOTPC32_TLSDESC)
67a4f2b7
AO		 3346 {
3347 /* GDesc -> LE transition.
3348 It's originally something like:
3349 leaq x@tlsdesc(%rip), %rax
3350
3351 Change it to:
c9736ba0 3352 movl $x@tpoff, %rax. */
67a4f2b7 3353
c9736ba0 3354 unsigned int val, type;
67a4f2b7 3355
67a4f2b7 3356 type = bfd_get_8 (input_bfd, contents + roff - 3);
67a4f2b7 3357 val = bfd_get_8 (input_bfd, contents + roff - 1);
67a4f2b7
AO		 3358 bfd_put_8 (output_bfd, 0x48 | ((type >> 2) & 1),
3359 contents + roff - 3);
3360 bfd_put_8 (output_bfd, 0xc7, contents + roff - 2);
3361 bfd_put_8 (output_bfd, 0xc0 | ((val >> 3) & 7),
3362 contents + roff - 1);
eb4ff4d6 3363 bfd_put_32 (output_bfd,
351f65ca 3364 elf_x86_64_tpoff (info, relocation),
67a4f2b7
AO		 3365 contents + roff);
3366 continue;
3367 }
419414ea 3368 else if (r_type == R_X86_64_TLSDESC_CALL)
67a4f2b7
AO		 3369 {
3370 /* GDesc -> LE transition.
3371 It's originally:
3372 call *(%rax)
3373 Turn it into:
142411ca 3374 xchg %ax,%ax. */
10efb593 3375 bfd_put_8 (output_bfd, 0x66, contents + roff);
67a4f2b7
AO		 3376 bfd_put_8 (output_bfd, 0x90, contents + roff + 1);
3377 continue;
3378 }
419414ea 3379 else if (r_type == R_X86_64_GOTTPOFF)
bffbf940 3380 {
bffbf940 3381 /* IE->LE transition:
cf61b747 3382 For 64bit, originally it can be one of:
bffbf940
JJ		 3383 movq foo@gottpoff(%rip), %reg
3384 addq foo@gottpoff(%rip), %reg
3385 We change it into:
3386 movq $foo, %reg
3387 leaq foo(%reg), %reg
cf61b747
L		 3388 addq $foo, %reg.
3389 For 32bit, originally it can be one of:
3390 movq foo@gottpoff(%rip), %reg
3391 addl foo@gottpoff(%rip), %reg
3392 We change it into:
3393 movq $foo, %reg
3394 leal foo(%reg), %reg
3395 addl $foo, %reg. */
142411ca
L		 3396
3397 unsigned int val, type, reg;
3398
cf61b747
L		 3399 if (roff >= 3)
3400 val = bfd_get_8 (input_bfd, contents + roff - 3);
3401 else
3402 val = 0;
142411ca
L		 3403 type = bfd_get_8 (input_bfd, contents + roff - 2);
3404 reg = bfd_get_8 (input_bfd, contents + roff - 1);
bffbf940 3405 reg >>= 3;
bffbf940
JJ		 3406 if (type == 0x8b)
3407 {
3408 /* movq */
3409 if (val == 0x4c)
3410 bfd_put_8 (output_bfd, 0x49,
142411ca 3411 contents + roff - 3);
4a4c5f25
L		 3412 else if (!ABI_64_P (output_bfd) && val == 0x44)
3413 bfd_put_8 (output_bfd, 0x41,
3414 contents + roff - 3);
bffbf940 3415 bfd_put_8 (output_bfd, 0xc7,
142411ca 3416 contents + roff - 2);
bffbf940 3417 bfd_put_8 (output_bfd, 0xc0 | reg,
142411ca 3418 contents + roff - 1);
bffbf940
JJ		 3419 }
3420 else if (reg == 4)
3421 {
cf61b747
L		 3422 /* addq/addl -> addq/addl - addressing with %rsp/%r12
3423 is special */
bffbf940
JJ		 3424 if (val == 0x4c)
3425 bfd_put_8 (output_bfd, 0x49,
142411ca 3426 contents + roff - 3);
4a4c5f25
L		 3427 else if (!ABI_64_P (output_bfd) && val == 0x44)
3428 bfd_put_8 (output_bfd, 0x41,
3429 contents + roff - 3);
bffbf940 3430 bfd_put_8 (output_bfd, 0x81,
142411ca 3431 contents + roff - 2);
bffbf940 3432 bfd_put_8 (output_bfd, 0xc0 | reg,
142411ca 3433 contents + roff - 1);
bffbf940
JJ		 3434 }
3435 else
3436 {
cf61b747 3437 /* addq/addl -> leaq/leal */
bffbf940
JJ		 3438 if (val == 0x4c)
3439 bfd_put_8 (output_bfd, 0x4d,
142411ca 3440 contents + roff - 3);
4a4c5f25
L		 3441 else if (!ABI_64_P (output_bfd) && val == 0x44)
3442 bfd_put_8 (output_bfd, 0x45,
3443 contents + roff - 3);
bffbf940 3444 bfd_put_8 (output_bfd, 0x8d,
142411ca 3445 contents + roff - 2);
bffbf940 3446 bfd_put_8 (output_bfd, 0x80 | reg | (reg << 3),
142411ca 3447 contents + roff - 1);
bffbf940 3448 }
eb4ff4d6 3449 bfd_put_32 (output_bfd,
351f65ca 3450 elf_x86_64_tpoff (info, relocation),
142411ca 3451 contents + roff);
bffbf940
JJ		 3452 continue;
3453 }
142411ca
L		 3454 else
3455 BFD_ASSERT (FALSE);
bffbf940
JJ		 3456 }
3457
6de2ae4a 3458 if (htab->elf.sgot == NULL)
bffbf940
JJ		 3459 abort ();
3460
3461 if (h != NULL)
67a4f2b7
AO		 3462 {
3463 off = h->got.offset;
0afcef53 3464 offplt = elf_x86_hash_entry (h)->tlsdesc_got;
67a4f2b7 3465 }
bffbf940
JJ		 3466 else
3467 {
3468 if (local_got_offsets == NULL)
3469 abort ();
3470
3471 off = local_got_offsets[r_symndx];
67a4f2b7 3472 offplt = local_tlsdesc_gotents[r_symndx];
bffbf940
JJ		 3473 }
3474
3475 if ((off & 1) != 0)
3476 off &= ~1;
26e41594 3477 else
bffbf940
JJ		 3478 {
3479 Elf_Internal_Rela outrel;
bffbf940 3480 int dr_type, indx;
67a4f2b7 3481 asection *sreloc;
bffbf940 3482
6de2ae4a 3483 if (htab->elf.srelgot == NULL)
bffbf940
JJ		 3484 abort ();
3485
67a4f2b7
AO		 3486 indx = h && h->dynindx != -1 ? h->dynindx : 0;
3487
3488 if (GOT_TLS_GDESC_P (tls_type))
3489 {
351f65ca 3490 outrel.r_info = htab->r_info (indx, R_X86_64_TLSDESC);
67a4f2b7 3491 BFD_ASSERT (htab->sgotplt_jump_table_size + offplt
6de2ae4a
L		 3492 + 2 * GOT_ENTRY_SIZE <= htab->elf.sgotplt->size);
3493 outrel.r_offset = (htab->elf.sgotplt->output_section->vma
3494 + htab->elf.sgotplt->output_offset
67a4f2b7
AO		 3495 + offplt
3496 + htab->sgotplt_jump_table_size);
6de2ae4a 3497 sreloc = htab->elf.srelplt;
67a4f2b7 3498 if (indx == 0)
0afcef53 3499 outrel.r_addend = relocation - _bfd_x86_elf_dtpoff_base (info);
67a4f2b7
AO		 3500 else
3501 outrel.r_addend = 0;
351f65ca 3502 elf_append_rela (output_bfd, sreloc, &outrel);
67a4f2b7
AO		 3503 }
3504
6de2ae4a 3505 sreloc = htab->elf.srelgot;
67a4f2b7 3506
6de2ae4a
L		 3507 outrel.r_offset = (htab->elf.sgot->output_section->vma
3508 + htab->elf.sgot->output_offset + off);
bffbf940 3509
67a4f2b7 3510 if (GOT_TLS_GD_P (tls_type))
bffbf940 3511 dr_type = R_X86_64_DTPMOD64;
67a4f2b7
AO		 3512 else if (GOT_TLS_GDESC_P (tls_type))
3513 goto dr_done;
bffbf940
JJ		 3514 else
3515 dr_type = R_X86_64_TPOFF64;
3516
6de2ae4a 3517 bfd_put_64 (output_bfd, 0, htab->elf.sgot->contents + off);
bffbf940 3518 outrel.r_addend = 0;
67a4f2b7
AO		 3519 if ((dr_type == R_X86_64_TPOFF64
3520 || dr_type == R_X86_64_TLSDESC) && indx == 0)
0afcef53 3521 outrel.r_addend = relocation - _bfd_x86_elf_dtpoff_base (info);
351f65ca 3522 outrel.r_info = htab->r_info (indx, dr_type);
bffbf940 3523
351f65ca 3524 elf_append_rela (output_bfd, sreloc, &outrel);
bffbf940 3525
67a4f2b7 3526 if (GOT_TLS_GD_P (tls_type))
bffbf940
JJ		 3527 {
3528 if (indx == 0)
3529 {
d40d037c 3530 BFD_ASSERT (! unresolved_reloc);
bffbf940 3531 bfd_put_64 (output_bfd,
0afcef53 3532 relocation - _bfd_x86_elf_dtpoff_base (info),
6de2ae4a 3533 htab->elf.sgot->contents + off + GOT_ENTRY_SIZE);
bffbf940
JJ		 3534 }
3535 else
3536 {
3537 bfd_put_64 (output_bfd, 0,
6de2ae4a 3538 htab->elf.sgot->contents + off + GOT_ENTRY_SIZE);
351f65ca 3539 outrel.r_info = htab->r_info (indx,
bffbf940
JJ		 3540 R_X86_64_DTPOFF64);
3541 outrel.r_offset += GOT_ENTRY_SIZE;
351f65ca 3542 elf_append_rela (output_bfd, sreloc,
464d3bd4 3543 &outrel);
bffbf940
JJ		 3544 }
3545 }
3546
67a4f2b7 3547 dr_done:
bffbf940
JJ		 3548 if (h != NULL)
3549 h->got.offset |= 1;
3550 else
3551 local_got_offsets[r_symndx] |= 1;
3552 }
3553
67a4f2b7
AO		 3554 if (off >= (bfd_vma) -2
3555 && ! GOT_TLS_GDESC_P (tls_type))
bffbf940 3556 abort ();
419414ea 3557 if (r_type_tls == r_type)
bffbf940 3558 {
67a4f2b7
AO		 3559 if (r_type == R_X86_64_GOTPC32_TLSDESC
3560 || r_type == R_X86_64_TLSDESC_CALL)
6de2ae4a
L		 3561 relocation = htab->elf.sgotplt->output_section->vma
3562 + htab->elf.sgotplt->output_offset
67a4f2b7
AO		 3563 + offplt + htab->sgotplt_jump_table_size;
3564 else
6de2ae4a
L		 3565 relocation = htab->elf.sgot->output_section->vma
3566 + htab->elf.sgot->output_offset + off;
b34976b6 3567 unresolved_reloc = FALSE;
bffbf940 3568 }
142411ca 3569 else
67a4f2b7 3570 {
142411ca 3571 bfd_vma roff = rel->r_offset;
67a4f2b7 3572
419414ea 3573 if (r_type == R_X86_64_TLSGD)
142411ca 3574 {
52bc799a 3575 /* GD->IE transition. For 64bit, change
e2cbcd91
L		 3576 .byte 0x66; leaq foo@tlsgd(%rip), %rdi
3577 .word 0x6666; rex64; call __tls_get_addr@PLT
3578 or
3579 .byte 0x66; leaq foo@tlsgd(%rip), %rdi
3580 .byte 0x66; rex64
3581 call *__tls_get_addr@GOTPCREL(%rip
3582 which may be converted to
3583 addr32 call __tls_get_addr
52bc799a 3584 into:
e2cbcd91
L		 3585 movq %fs:0, %rax
3586 addq foo@gottpoff(%rip), %rax
52bc799a 3587 For 32bit, change
e2cbcd91
L		 3588 leaq foo@tlsgd(%rip), %rdi
3589 .word 0x6666; rex64; call __tls_get_addr@PLT
3590 or
3591 leaq foo@tlsgd(%rip), %rdi
3592 .byte 0x66; rex64;
3593 call *__tls_get_addr@GOTPCREL(%rip)
3594 which may be converted to
3595 addr32 call __tls_get_addr
52bc799a 3596 into:
e2cbcd91
L		 3597 movl %fs:0, %eax
3598 addq foo@gottpoff(%rip), %rax
5c98a14e 3599 For largepic, change:
e2cbcd91
L		 3600 leaq foo@tlsgd(%rip), %rdi
3601 movabsq $__tls_get_addr@pltoff, %rax
3602 addq %r15, %rax
3603 call *%rax
5c98a14e 3604 into:
e2cbcd91
L		 3605 movq %fs:0, %rax
3606 addq foo@gottpoff(%rax), %rax
3607 nopw 0x0(%rax,%rax,1) */
5c98a14e 3608 int largepic = 0;
e2cbcd91 3609 if (ABI_64_P (output_bfd))
5c98a14e 3610 {
e2cbcd91
L		 3611 if (contents[roff + 5] == 0xb8)
3612 {
3613 memcpy (contents + roff - 3,
3614 "\x64\x48\x8b\x04\x25\0\0\0\0\x48\x03\x05"
3615 "\0\0\0\0\x66\x0f\x1f\x44\0", 22);
3616 largepic = 1;
3617 }
3618 else
3619 memcpy (contents + roff - 4,
3620 "\x64\x48\x8b\x04\x25\0\0\0\0\x48\x03\x05\0\0\0",
3621 16);
5c98a14e 3622 }
52bc799a
L		 3623 else
3624 memcpy (contents + roff - 3,
3625 "\x64\x8b\x04\x25\0\0\0\0\x48\x03\x05\0\0\0",
3626 15);
142411ca 3627
6de2ae4a
L		 3628 relocation = (htab->elf.sgot->output_section->vma
3629 + htab->elf.sgot->output_offset + off
142411ca 3630 - roff
5c98a14e 3631 - largepic
142411ca
L		 3632 - input_section->output_section->vma
3633 - input_section->output_offset
3634 - 12);
3635 bfd_put_32 (output_bfd, relocation,
5c98a14e
JJ		 3636 contents + roff + 8 + largepic);
3637 /* Skip R_X86_64_PLT32/R_X86_64_PLTOFF64. */
142411ca 3638 rel++;
60f2e42e 3639 wrel++;
142411ca
L		 3640 continue;
3641 }
419414ea 3642 else if (r_type == R_X86_64_GOTPC32_TLSDESC)
142411ca
L		 3643 {
3644 /* GDesc -> IE transition.
3645 It's originally something like:
3646 leaq x@tlsdesc(%rip), %rax
67a4f2b7 3647
142411ca 3648 Change it to:
c9736ba0 3649 movq x@gottpoff(%rip), %rax # before xchg %ax,%ax. */
67a4f2b7 3650
142411ca
L		 3651 /* Now modify the instruction as appropriate. To
3652 turn a leaq into a movq in the form we use it, it
3653 suffices to change the second byte from 0x8d to
3654 0x8b. */
3655 bfd_put_8 (output_bfd, 0x8b, contents + roff - 2);
3656
3657 bfd_put_32 (output_bfd,
6de2ae4a
L		 3658 htab->elf.sgot->output_section->vma
3659 + htab->elf.sgot->output_offset + off
142411ca
L		 3660 - rel->r_offset
3661 - input_section->output_section->vma
3662 - input_section->output_offset
3663 - 4,
3664 contents + roff);
3665 continue;
3666 }
419414ea 3667 else if (r_type == R_X86_64_TLSDESC_CALL)
142411ca
L		 3668 {
3669 /* GDesc -> IE transition.
3670 It's originally:
3671 call *(%rax)
3672
3673 Change it to:
c9736ba0 3674 xchg %ax, %ax. */
142411ca 3675
142411ca
L		 3676 bfd_put_8 (output_bfd, 0x66, contents + roff);
3677 bfd_put_8 (output_bfd, 0x90, contents + roff + 1);
3678 continue;
3679 }
3680 else
3681 BFD_ASSERT (FALSE);
67a4f2b7 3682 }
bffbf940
JJ		 3683 break;
3684
3685 case R_X86_64_TLSLD:
351f65ca
L		 3686 if (! elf_x86_64_tls_transition (info, input_bfd,
3687 input_section, contents,
3688 symtab_hdr, sym_hashes,
bedfd056
L		 3689 &r_type, GOT_UNKNOWN, rel,
3690 relend, h, r_symndx, TRUE))
142411ca 3691 return FALSE;
a3fadc9a 3692
142411ca
L		 3693 if (r_type != R_X86_64_TLSLD)
3694 {
bffbf940 3695 /* LD->LE transition:
e2cbcd91
L		 3696 leaq foo@tlsld(%rip), %rdi
3697 call __tls_get_addr@PLT
3698 For 64bit, we change it into:
3699 .word 0x6666; .byte 0x66; movq %fs:0, %rax
3700 For 32bit, we change it into:
3701 nopl 0x0(%rax); movl %fs:0, %eax
3702 Or
3703 leaq foo@tlsld(%rip), %rdi;
3704 call *__tls_get_addr@GOTPCREL(%rip)
3705 which may be converted to
3706 addr32 call __tls_get_addr
52bc799a 3707 For 64bit, we change it into:
e2cbcd91 3708 .word 0x6666; .word 0x6666; movq %fs:0, %rax
52bc799a 3709 For 32bit, we change it into:
e2cbcd91 3710 nopw 0x0(%rax); movl %fs:0, %eax
5c98a14e 3711 For largepic, change:
e2cbcd91
L		 3712 leaq foo@tlsgd(%rip), %rdi
3713 movabsq $__tls_get_addr@pltoff, %rax
3714 addq %rbx, %rax
3715 call *%rax
3716 into
3717 data16 data16 data16 nopw %cs:0x0(%rax,%rax,1)
3718 movq %fs:0, %eax */
142411ca
L		 3719
3720 BFD_ASSERT (r_type == R_X86_64_TPOFF32);
e2cbcd91
L		 3721 if (ABI_64_P (output_bfd))
3722 {
3723 if (contents[rel->r_offset + 5] == 0xb8)
3724 memcpy (contents + rel->r_offset - 3,
3725 "\x66\x66\x66\x66\x2e\x0f\x1f\x84\0\0\0\0\0"
3726 "\x64\x48\x8b\x04\x25\0\0\0", 22);
3727 else if (contents[rel->r_offset + 4] == 0xff
3728 || contents[rel->r_offset + 4] == 0x67)
3729 memcpy (contents + rel->r_offset - 3,
3730 "\x66\x66\x66\x66\x64\x48\x8b\x04\x25\0\0\0",
3731 13);
3732 else
3733 memcpy (contents + rel->r_offset - 3,
3734 "\x66\x66\x66\x64\x48\x8b\x04\x25\0\0\0", 12);
3735 }
52bc799a 3736 else
e2cbcd91
L		 3737 {
3738 if (contents[rel->r_offset + 4] == 0xff)
3739 memcpy (contents + rel->r_offset - 3,
3740 "\x66\x0f\x1f\x40\x00\x64\x8b\x04\x25\0\0\0",
3741 13);
3742 else
3743 memcpy (contents + rel->r_offset - 3,
3744 "\x0f\x1f\x40\x00\x64\x8b\x04\x25\0\0\0", 12);
3745 }
3746 /* Skip R_X86_64_PC32, R_X86_64_PLT32, R_X86_64_GOTPCRELX
3747 and R_X86_64_PLTOFF64. */
bffbf940 3748 rel++;
60f2e42e 3749 wrel++;
bffbf940
JJ		 3750 continue;
3751 }
3752
6de2ae4a 3753 if (htab->elf.sgot == NULL)
bffbf940
JJ		 3754 abort ();
3755
0afcef53 3756 off = htab->tls_ld_or_ldm_got.offset;
bffbf940
JJ		 3757 if (off & 1)
3758 off &= ~1;
3759 else
3760 {
3761 Elf_Internal_Rela outrel;
bffbf940 3762
6de2ae4a 3763 if (htab->elf.srelgot == NULL)
bffbf940
JJ		 3764 abort ();
3765
6de2ae4a
L		 3766 outrel.r_offset = (htab->elf.sgot->output_section->vma
3767 + htab->elf.sgot->output_offset + off);
bffbf940
JJ		 3768
3769 bfd_put_64 (output_bfd, 0,
6de2ae4a 3770 htab->elf.sgot->contents + off);
bffbf940 3771 bfd_put_64 (output_bfd, 0,
6de2ae4a 3772 htab->elf.sgot->contents + off + GOT_ENTRY_SIZE);
351f65ca 3773 outrel.r_info = htab->r_info (0, R_X86_64_DTPMOD64);
bffbf940 3774 outrel.r_addend = 0;
351f65ca 3775 elf_append_rela (output_bfd, htab->elf.srelgot,
464d3bd4 3776 &outrel);
0afcef53 3777 htab->tls_ld_or_ldm_got.offset |= 1;
bffbf940 3778 }
6de2ae4a
L		 3779 relocation = htab->elf.sgot->output_section->vma
3780 + htab->elf.sgot->output_offset + off;
b34976b6 3781 unresolved_reloc = FALSE;
bffbf940
JJ		 3782 break;
3783
3784 case R_X86_64_DTPOFF32:
0e1862bb
L		 3785 if (!bfd_link_executable (info)
3786 || (input_section->flags & SEC_CODE) == 0)
0afcef53 3787 relocation -= _bfd_x86_elf_dtpoff_base (info);
bffbf940 3788 else
351f65ca 3789 relocation = elf_x86_64_tpoff (info, relocation);
bffbf940
JJ		 3790 break;
3791
3792 case R_X86_64_TPOFF32:
6769d501 3793 case R_X86_64_TPOFF64:
0e1862bb 3794 BFD_ASSERT (bfd_link_executable (info));
351f65ca 3795 relocation = elf_x86_64_tpoff (info, relocation);
bffbf940
JJ		 3796 break;
3797
a69ed7f7
L		 3798 case R_X86_64_DTPOFF64:
3799 BFD_ASSERT ((input_section->flags & SEC_CODE) == 0);
0afcef53 3800 relocation -= _bfd_x86_elf_dtpoff_base (info);
a69ed7f7
L		 3801 break;
3802
70256ad8
AJ		 3803 default:
3804 break;
3805 }
8d88c4ca 3806
239e1f3a
AM		 3807 /* Dynamic relocs are not propagated for SEC_DEBUGGING sections
3808 because such sections are not SEC_ALLOC and thus ld.so will
3809 not process them. */
c434dee6 3810 if (unresolved_reloc
239e1f3a 3811 && !((input_section->flags & SEC_DEBUGGING) != 0
1d5316ab
AM		 3812 && h->def_dynamic)
3813 && _bfd_elf_section_offset (output_bfd, info, input_section,
3814 rel->r_offset) != (bfd_vma) -1)
a040981f 3815 {
7073b5b9
L		 3816 switch (r_type)
3817 {
3818 case R_X86_64_32S:
a5b4ee94
L		 3819 sec = h->root.u.def.section;
3820 if ((info->nocopyreloc
3821 || (eh->def_protected
3822 && elf_has_no_copy_on_protected (h->root.u.def.section->owner)))
7073b5b9
L		 3823 && !(h->root.u.def.section->flags & SEC_CODE))
3824 return elf_x86_64_need_pic (info, input_bfd, input_section,
3825 h, NULL, NULL, howto);
3826 /* Fall through. */
3827
3828 default:
3829 _bfd_error_handler
3830 /* xgettext:c-format */
3831 (_("%B(%A+%#Lx): unresolvable %s relocation against symbol `%s'"),
3832 input_bfd,
3833 input_section,
3834 rel->r_offset,
3835 howto->name,
3836 h->root.root.string);
3837 return FALSE;
3838 }
a040981f 3839 }
c434dee6 3840
cbe950e9 3841do_relocation:
8d88c4ca 3842 r = _bfd_final_link_relocate (howto, input_bfd, input_section,
c434dee6
AJ		 3843 contents, rel->r_offset,
3844 relocation, rel->r_addend);
8d88c4ca 3845
62d78908 3846check_relocation_error:
8d88c4ca 3847 if (r != bfd_reloc_ok)
8da6118f 3848 {
c434dee6
AJ		 3849 const char *name;
3850
3851 if (h != NULL)
3852 name = h->root.root.string;
3853 else
8da6118f 3854 {
c434dee6
AJ		 3855 name = bfd_elf_string_from_elf_section (input_bfd,
3856 symtab_hdr->sh_link,
3857 sym->st_name);
3858 if (name == NULL)
b34976b6 3859 return FALSE;
c434dee6
AJ		 3860 if (*name == '\0')
3861 name = bfd_section_name (input_bfd, sec);
3862 }
3863
3864 if (r == bfd_reloc_overflow)
8b43e456 3865 {
78984959 3866 if (converted_reloc)
8b43e456
L		 3867 {
3868 info->callbacks->einfo
3869 (_("%F%P: failed to convert GOTPCREL relocation; relink with --no-relax\n"));
3870 return FALSE;
3871 }
3872 (*info->callbacks->reloc_overflow)
3873 (info, (h ? &h->root : NULL), name, howto->name,
3874 (bfd_vma) 0, input_bfd, input_section, rel->r_offset);
3875 }
c434dee6
AJ		 3876 else
3877 {
4eca0228 3878 _bfd_error_handler
695344c0 3879 /* xgettext:c-format */
d42c267e 3880 (_("%B(%A+%#Lx): reloc against `%s': error %d"),
d003868e 3881 input_bfd, input_section,
d42c267e 3882 rel->r_offset, name, (int) r);
b34976b6 3883 return FALSE;
8da6118f
KH		 3884 }
3885 }
60f2e42e
L		 3886
3887 if (wrel != rel)
3888 *wrel = *rel;
3889 }
3890
3891 if (wrel != rel)
3892 {
3893 Elf_Internal_Shdr *rel_hdr;
3894 size_t deleted = rel - wrel;
3895
3896 rel_hdr = _bfd_elf_single_rel_hdr (input_section->output_section);
3897 rel_hdr->sh_size -= rel_hdr->sh_entsize * deleted;
3898 if (rel_hdr->sh_size == 0)
3899 {
3900 /* It is too late to remove an empty reloc section. Leave
3901 one NONE reloc.
3902 ??? What is wrong with an empty section??? */
3903 rel_hdr->sh_size = rel_hdr->sh_entsize;
3904 deleted -= 1;
3905 }
3906 rel_hdr = _bfd_elf_single_rel_hdr (input_section);
3907 rel_hdr->sh_size -= rel_hdr->sh_entsize * deleted;
3908 input_section->reloc_count -= deleted;
8d88c4ca 3909 }
70256ad8 3910
b34976b6 3911 return TRUE;
70256ad8
AJ		 3912}
3913
3914/* Finish up dynamic symbol handling. We set the contents of various
3915 dynamic sections here. */
3916
b34976b6 3917static bfd_boolean
351f65ca
L		 3918elf_x86_64_finish_dynamic_symbol (bfd *output_bfd,
3919 struct bfd_link_info *info,
3920 struct elf_link_hash_entry *h,
aec6b87e 3921 Elf_Internal_Sym *sym)
70256ad8 3922{
0afcef53 3923 struct elf_x86_link_hash_table *htab;
f2c29a16 3924 bfd_boolean use_plt_second;
0afcef53 3925 struct elf_x86_link_hash_entry *eh;
aec6b87e 3926 bfd_boolean local_undefweak;
70256ad8 3927
0afcef53 3928 htab = elf_x86_hash_table (info, X86_64_ELF_DATA);
4dfe6ac6
NC		 3929 if (htab == NULL)
3930 return FALSE;
70256ad8 3931
f2c29a16
L		 3932 /* Use the second PLT section only if there is .plt section. */
3933 use_plt_second = htab->elf.splt != NULL && htab->plt_second != NULL;
0ff2b86e 3934
0afcef53 3935 eh = (struct elf_x86_link_hash_entry *) h;
9e9821dd
L		 3936 if (eh->no_finish_dynamic_symbol)
3937 abort ();
dd7e64d4 3938
aec6b87e
L		 3939 /* We keep PLT/GOT entries without dynamic PLT/GOT relocations for
3940 resolved undefined weak symbols in executable so that their
3941 references have value 0 at run-time. */
c5bce5c6 3942 local_undefweak = UNDEFINED_WEAK_RESOLVED_TO_ZERO (info, eh);
aec6b87e 3943
70256ad8
AJ		 3944 if (h->plt.offset != (bfd_vma) -1)
3945 {
70256ad8 3946 bfd_vma plt_index;
38b12349 3947 bfd_vma got_offset, plt_offset;
70256ad8 3948 Elf_Internal_Rela rela;
947216bf 3949 bfd_byte *loc;
0ff2b86e 3950 asection *plt, *gotplt, *relplt, *resolved_plt;
351f65ca 3951 const struct elf_backend_data *bed;
5974eba6 3952 bfd_vma plt_got_pcrel_offset;
cbe950e9
L		 3953
3954 /* When building a static executable, use .iplt, .igot.plt and
3955 .rela.iplt sections for STT_GNU_IFUNC symbols. */
6de2ae4a 3956 if (htab->elf.splt != NULL)
cbe950e9 3957 {
6de2ae4a
L		 3958 plt = htab->elf.splt;
3959 gotplt = htab->elf.sgotplt;
3960 relplt = htab->elf.srelplt;
cbe950e9
L		 3961 }
3962 else
3963 {
6de2ae4a
L		 3964 plt = htab->elf.iplt;
3965 gotplt = htab->elf.igotplt;
3966 relplt = htab->elf.irelplt;
cbe950e9 3967 }
70256ad8
AJ		 3968
3969 /* This symbol has an entry in the procedure linkage table. Set
407443a3 3970 it up. */
cbe950e9 3971 if ((h->dynindx == -1
aec6b87e 3972 && !local_undefweak
0e1862bb 3973 && !((h->forced_local || bfd_link_executable (info))
cbe950e9
L		 3974 && h->def_regular
3975 && h->type == STT_GNU_IFUNC))
3976 || plt == NULL
3977 || gotplt == NULL
3978 || relplt == NULL)
cec7f46a 3979 abort ();
70256ad8
AJ		 3980
3981 /* Get the index in the procedure linkage table which
3982 corresponds to this symbol. This is the index of this symbol
3983 in all the symbols for which we are making plt entries. The
cbe950e9 3984 first entry in the procedure linkage table is reserved.
6bbec505 3985
cbe950e9 3986 Get the offset into the .got table of the entry that
407443a3 3987 corresponds to this function. Each .got entry is GOT_ENTRY_SIZE
cbe950e9
L		 3988 bytes. The first three are reserved for the dynamic linker.
3989
3990 For static executables, we don't reserve anything. */
3991
6de2ae4a 3992 if (plt == htab->elf.splt)
cbe950e9 3993 {
765e526c
L		 3994 got_offset = (h->plt.offset / htab->plt.plt_entry_size
3995 - htab->plt.has_plt0);
e1f98742 3996 got_offset = (got_offset + 3) * GOT_ENTRY_SIZE;
cbe950e9
L		 3997 }
3998 else
3999 {
765e526c 4000 got_offset = h->plt.offset / htab->plt.plt_entry_size;
e1f98742 4001 got_offset = got_offset * GOT_ENTRY_SIZE;
cbe950e9 4002 }
70256ad8 4003
38b12349 4004 /* Fill in the entry in the procedure linkage table. */
765e526c
L		 4005 memcpy (plt->contents + h->plt.offset, htab->plt.plt_entry,
4006 htab->plt.plt_entry_size);
f2c29a16 4007 if (use_plt_second)
0ff2b86e 4008 {
f2c29a16 4009 memcpy (htab->plt_second->contents + eh->plt_second.offset,
765e526c
L		 4010 htab->non_lazy_plt->plt_entry,
4011 htab->non_lazy_plt->plt_entry_size);
0ff2b86e 4012
f2c29a16
L		 4013 resolved_plt = htab->plt_second;
4014 plt_offset = eh->plt_second.offset;
0ff2b86e
L		 4015 }
4016 else
4017 {
0ff2b86e
L		 4018 resolved_plt = plt;
4019 plt_offset = h->plt.offset;
4020 }
eed180f8
RM		 4021
4022 /* Insert the relocation positions of the plt section. */
4023
4024 /* Put offset the PC-relative instruction referring to the GOT entry,
4025 subtracting the size of that instruction. */
ab7fede8
L		 4026 plt_got_pcrel_offset = (gotplt->output_section->vma
4027 + gotplt->output_offset
4028 + got_offset
4029 - resolved_plt->output_section->vma
4030 - resolved_plt->output_offset
4031 - plt_offset
765e526c 4032 - htab->plt.plt_got_insn_size);
ab7fede8
L		 4033
4034 /* Check PC-relative offset overflow in PLT entry. */
5974eba6 4035 if ((plt_got_pcrel_offset + 0x80000000) > 0xffffffff)
695344c0 4036 /* xgettext:c-format */
ab7fede8
L		 4037 info->callbacks->einfo (_("%F%B: PC-relative offset overflow in PLT entry for `%s'\n"),
4038 output_bfd, h->root.root.string);
4039
4040 bfd_put_32 (output_bfd, plt_got_pcrel_offset,
38b12349 4041 (resolved_plt->contents + plt_offset
765e526c 4042 + htab->plt.plt_got_offset));
cbe950e9 4043
653165cc 4044 /* Fill in the entry in the global offset table, initially this
aec6b87e
L		 4045 points to the second part of the PLT entry. Leave the entry
4046 as zero for undefined weak symbol in PIE. No PLT relocation
4047 against undefined weak symbol in PIE. */
4048 if (!local_undefweak)
cbe950e9 4049 {
765e526c 4050 if (htab->plt.has_plt0)
38b12349
L		 4051 bfd_put_64 (output_bfd, (plt->output_section->vma
4052 + plt->output_offset
4053 + h->plt.offset
765e526c 4054 + htab->lazy_plt->plt_lazy_offset),
38b12349 4055 gotplt->contents + got_offset);
aec6b87e
L		 4056
4057 /* Fill in the entry in the .rela.plt section. */
4058 rela.r_offset = (gotplt->output_section->vma
4059 + gotplt->output_offset
4060 + got_offset);
4061 if (h->dynindx == -1
4062 || ((bfd_link_executable (info)
4063 || ELF_ST_VISIBILITY (h->other) != STV_DEFAULT)
4064 && h->def_regular
4065 && h->type == STT_GNU_IFUNC))
4066 {
6322e5c5
L		 4067 info->callbacks->minfo (_("Local IFUNC function `%s' in %B\n"),
4068 h->root.root.string,
4069 h->root.u.def.section->owner);
4070
aec6b87e
L		 4071 /* If an STT_GNU_IFUNC symbol is locally defined, generate
4072 R_X86_64_IRELATIVE instead of R_X86_64_JUMP_SLOT. */
4073 rela.r_info = htab->r_info (0, R_X86_64_IRELATIVE);
4074 rela.r_addend = (h->root.u.def.value
4075 + h->root.u.def.section->output_section->vma
4076 + h->root.u.def.section->output_offset);
4077 /* R_X86_64_IRELATIVE comes last. */
4078 plt_index = htab->next_irelative_index--;
4079 }
4080 else
4081 {
4082 rela.r_info = htab->r_info (h->dynindx, R_X86_64_JUMP_SLOT);
4083 rela.r_addend = 0;
4084 plt_index = htab->next_jump_slot_index++;
4085 }
e1f98742 4086
38b12349
L		 4087 /* Don't fill the second and third slots in PLT entry for
4088 static executables nor without PLT0. */
765e526c 4089 if (plt == htab->elf.splt && htab->plt.has_plt0)
aec6b87e 4090 {
38b12349 4091 bfd_vma plt0_offset
765e526c 4092 = h->plt.offset + htab->lazy_plt->plt_plt_insn_end;
aec6b87e
L		 4093
4094 /* Put relocation index. */
4095 bfd_put_32 (output_bfd, plt_index,
4096 (plt->contents + h->plt.offset
765e526c 4097 + htab->lazy_plt->plt_reloc_offset));
aec6b87e
L		 4098
4099 /* Put offset for jmp .PLT0 and check for overflow. We don't
4100 check relocation index for overflow since branch displacement
4101 will overflow first. */
4102 if (plt0_offset > 0x80000000)
695344c0 4103 /* xgettext:c-format */
aec6b87e
L		 4104 info->callbacks->einfo (_("%F%B: branch displacement overflow in PLT entry for `%s'\n"),
4105 output_bfd, h->root.root.string);
4106 bfd_put_32 (output_bfd, - plt0_offset,
38b12349 4107 (plt->contents + h->plt.offset
765e526c 4108 + htab->lazy_plt->plt_plt_offset));
aec6b87e 4109 }
351f65ca 4110
aec6b87e
L		 4111 bed = get_elf_backend_data (output_bfd);
4112 loc = relplt->contents + plt_index * bed->s->sizeof_rela;
4113 bed->s->swap_reloca_out (output_bfd, &rela, loc);
4114 }
dd7e64d4
L		 4115 }
4116 else if (eh->plt_got.offset != (bfd_vma) -1)
4117 {
38b12349 4118 bfd_vma got_offset, plt_offset;
dd7e64d4
L		 4119 asection *plt, *got;
4120 bfd_boolean got_after_plt;
4121 int32_t got_pcrel_offset;
dd7e64d4
L		 4122
4123 /* Set the entry in the GOT procedure linkage table. */
4124 plt = htab->plt_got;
4125 got = htab->elf.sgot;
4126 got_offset = h->got.offset;
4127
4128 if (got_offset == (bfd_vma) -1
e492d2f8 4129 || (h->type == STT_GNU_IFUNC && h->def_regular)
dd7e64d4
L		 4130 || plt == NULL
4131 || got == NULL)
4132 abort ();
70256ad8 4133
38b12349 4134 /* Use the non-lazy PLT entry template for the GOT PLT since they
dd7e64d4 4135 are the identical. */
dd7e64d4
L		 4136 /* Fill in the entry in the GOT procedure linkage table. */
4137 plt_offset = eh->plt_got.offset;
4138 memcpy (plt->contents + plt_offset,
765e526c
L		 4139 htab->non_lazy_plt->plt_entry,
4140 htab->non_lazy_plt->plt_entry_size);
dd7e64d4
L		 4141
4142 /* Put offset the PC-relative instruction referring to the GOT
4143 entry, subtracting the size of that instruction. */
4144 got_pcrel_offset = (got->output_section->vma
4145 + got->output_offset
4146 + got_offset
4147 - plt->output_section->vma
4148 - plt->output_offset
4149 - plt_offset
765e526c 4150 - htab->non_lazy_plt->plt_got_insn_size);
dd7e64d4
L		 4151
4152 /* Check PC-relative offset overflow in GOT PLT entry. */
4153 got_after_plt = got->output_section->vma > plt->output_section->vma;
4154 if ((got_after_plt && got_pcrel_offset < 0)
4155 || (!got_after_plt && got_pcrel_offset > 0))
695344c0 4156 /* xgettext:c-format */
dd7e64d4
L		 4157 info->callbacks->einfo (_("%F%B: PC-relative offset overflow in GOT PLT entry for `%s'\n"),
4158 output_bfd, h->root.root.string);
4159
4160 bfd_put_32 (output_bfd, got_pcrel_offset,
38b12349 4161 (plt->contents + plt_offset
765e526c 4162 + htab->non_lazy_plt->plt_got_offset));
dd7e64d4
L		 4163 }
4164
aec6b87e
L		 4165 if (!local_undefweak
4166 && !h->def_regular
dd7e64d4
L		 4167 && (h->plt.offset != (bfd_vma) -1
4168 || eh->plt_got.offset != (bfd_vma) -1))
4169 {
4170 /* Mark the symbol as undefined, rather than as defined in
4171 the .plt section. Leave the value if there were any
4172 relocations where pointer equality matters (this is a clue
4173 for the dynamic linker, to make function pointer
4174 comparisons work between an application and shared
4175 library), otherwise set it to zero. If a function is only
4176 called from a binary, there is no need to slow down
4177 shared libraries because of that. */
4178 sym->st_shndx = SHN_UNDEF;
4179 if (!h->pointer_equality_needed)
4180 sym->st_value = 0;
70256ad8
AJ		 4181 }
4182
aec6b87e
L		 4183 /* Don't generate dynamic GOT relocation against undefined weak
4184 symbol in executable. */
bffbf940 4185 if (h->got.offset != (bfd_vma) -1
0afcef53
L		 4186 && ! GOT_TLS_GD_ANY_P (elf_x86_hash_entry (h)->tls_type)
4187 && elf_x86_hash_entry (h)->tls_type != GOT_TLS_IE
aec6b87e 4188 && !local_undefweak)
053579d7 4189 {
053579d7 4190 Elf_Internal_Rela rela;
233cc9c1 4191 asection *relgot = htab->elf.srelgot;
053579d7
AJ		 4192
4193 /* This symbol has an entry in the global offset table. Set it
bffbf940 4194 up. */
6de2ae4a 4195 if (htab->elf.sgot == NULL || htab->elf.srelgot == NULL)
c434dee6 4196 abort ();
053579d7 4197
6de2ae4a
L		 4198 rela.r_offset = (htab->elf.sgot->output_section->vma
4199 + htab->elf.sgot->output_offset
dc810e39 4200 + (h->got.offset &~ (bfd_vma) 1));
053579d7
AJ		 4201
4202 /* If this is a static link, or it is a -Bsymbolic link and the
4203 symbol is defined locally or was forced to be local because
4204 of a version file, we just want to emit a RELATIVE reloc.
4205 The entry in the global offset table will already have been
4206 initialized in the relocate_section function. */
710ab287 4207 if (h->def_regular
0018b0a3
L		 4208 && h->type == STT_GNU_IFUNC)
4209 {
233cc9c1
L		 4210 if (h->plt.offset == (bfd_vma) -1)
4211 {
4212 /* STT_GNU_IFUNC is referenced without PLT. */
4213 if (htab->elf.splt == NULL)
4214 {
4215 /* use .rel[a].iplt section to store .got relocations
4216 in static executable. */
4217 relgot = htab->elf.irelplt;
4218 }
6999821f 4219 if (SYMBOL_REFERENCES_LOCAL_P (info, h))
233cc9c1 4220 {
6322e5c5 4221 info->callbacks->minfo (_("Local IFUNC function `%s' in %B\n"),
6322e5c5
L		 4222 h->root.root.string,
4223 h->root.u.def.section->owner);
4224
233cc9c1
L		 4225 rela.r_info = htab->r_info (0,
4226 R_X86_64_IRELATIVE);
4227 rela.r_addend = (h->root.u.def.value
4228 + h->root.u.def.section->output_section->vma
4229 + h->root.u.def.section->output_offset);
4230 }
4231 else
4232 goto do_glob_dat;
4233 }
4234 else if (bfd_link_pic (info))
710ab287
L		 4235 {
4236 /* Generate R_X86_64_GLOB_DAT. */
4237 goto do_glob_dat;
4238 }
4239 else
4240 {
90d60710 4241 asection *plt;
aab82f4c 4242 bfd_vma plt_offset;
90d60710 4243
710ab287
L		 4244 if (!h->pointer_equality_needed)
4245 abort ();
4246
4247 /* For non-shared object, we can't use .got.plt, which
4248 contains the real function addres if we need pointer
4249 equality. We load the GOT entry with the PLT entry. */
f2c29a16 4250 if (htab->plt_second != NULL)
aab82f4c 4251 {
f2c29a16
L		 4252 plt = htab->plt_second;
4253 plt_offset = eh->plt_second.offset;
aab82f4c
L		 4254 }
4255 else
4256 {
4257 plt = htab->elf.splt ? htab->elf.splt : htab->elf.iplt;
4258 plt_offset = h->plt.offset;
4259 }
710ab287
L		 4260 bfd_put_64 (output_bfd, (plt->output_section->vma
4261 + plt->output_offset
aab82f4c 4262 + plt_offset),
6de2ae4a 4263 htab->elf.sgot->contents + h->got.offset);
710ab287
L		 4264 return TRUE;
4265 }
0018b0a3 4266 }
0e1862bb 4267 else if (bfd_link_pic (info)
6999821f 4268 && SYMBOL_REFERENCES_LOCAL_P (info, h))
053579d7 4269 {
ad71ce8d 4270 if (!(h->def_regular || ELF_COMMON_DEF_P (h)))
41bed6dd 4271 return FALSE;
cc78d0af 4272 BFD_ASSERT((h->got.offset & 1) != 0);
351f65ca 4273 rela.r_info = htab->r_info (0, R_X86_64_RELATIVE);
053579d7
AJ		 4274 rela.r_addend = (h->root.u.def.value
4275 + h->root.u.def.section->output_section->vma
4276 + h->root.u.def.section->output_offset);
4277 }
4278 else
4279 {
4280 BFD_ASSERT((h->got.offset & 1) == 0);
710ab287 4281do_glob_dat:
c434dee6 4282 bfd_put_64 (output_bfd, (bfd_vma) 0,
6de2ae4a 4283 htab->elf.sgot->contents + h->got.offset);
351f65ca 4284 rela.r_info = htab->r_info (h->dynindx, R_X86_64_GLOB_DAT);
053579d7
AJ		 4285 rela.r_addend = 0;
4286 }
4287
233cc9c1 4288 elf_append_rela (output_bfd, relgot, &rela);
053579d7
AJ		 4289 }
4290
f5385ebf 4291 if (h->needs_copy)
70256ad8 4292 {
70256ad8 4293 Elf_Internal_Rela rela;
5474d94f 4294 asection *s;
70256ad8
AJ		 4295
4296 /* This symbol needs a copy reloc. Set it up. */
4297
c434dee6
AJ		 4298 if (h->dynindx == -1
4299 || (h->root.type != bfd_link_hash_defined
4300 && h->root.type != bfd_link_hash_defweak)
5474d94f
AM		 4301 || htab->elf.srelbss == NULL
4302 || htab->elf.sreldynrelro == NULL)
c434dee6 4303 abort ();
70256ad8
AJ		 4304
4305 rela.r_offset = (h->root.u.def.value
4306 + h->root.u.def.section->output_section->vma
4307 + h->root.u.def.section->output_offset);
351f65ca 4308 rela.r_info = htab->r_info (h->dynindx, R_X86_64_COPY);
70256ad8 4309 rela.r_addend = 0;
afbf7e8e 4310 if (h->root.u.def.section == htab->elf.sdynrelro)
5474d94f
AM		 4311 s = htab->elf.sreldynrelro;
4312 else
4313 s = htab->elf.srelbss;
4314 elf_append_rela (output_bfd, s, &rela);
70256ad8
AJ		 4315 }
4316
b34976b6 4317 return TRUE;
70256ad8
AJ		 4318}
4319
c25bc9fc
L		 4320/* Finish up local dynamic symbol handling. We set the contents of
4321 various dynamic sections here. */
4322
4323static bfd_boolean
351f65ca 4324elf_x86_64_finish_local_dynamic_symbol (void **slot, void *inf)
c25bc9fc
L		 4325{
4326 struct elf_link_hash_entry *h
4327 = (struct elf_link_hash_entry *) *slot;
4328 struct bfd_link_info *info
eed180f8 4329 = (struct bfd_link_info *) inf;
c25bc9fc 4330
351f65ca 4331 return elf_x86_64_finish_dynamic_symbol (info->output_bfd,
5f0f0847 4332 info, h, NULL);
c25bc9fc
L		 4333}
4334
aec6b87e
L		 4335/* Finish up undefined weak symbol handling in PIE. Fill its PLT entry
4336 here since undefined weak symbol may not be dynamic and may not be
4337 called for elf_x86_64_finish_dynamic_symbol. */
4338
4339static bfd_boolean
4340elf_x86_64_pie_finish_undefweak_symbol (struct bfd_hash_entry *bh,
4341 void *inf)
4342{
4343 struct elf_link_hash_entry *h = (struct elf_link_hash_entry *) bh;
4344 struct bfd_link_info *info = (struct bfd_link_info *) inf;
4345
4346 if (h->root.type != bfd_link_hash_undefweak
4347 || h->dynindx != -1)
4348 return TRUE;
4349
4350 return elf_x86_64_finish_dynamic_symbol (info->output_bfd,
5f0f0847 4351 info, h, NULL);
aec6b87e
L		 4352}
4353
c434dee6
AJ		 4354/* Used to decide how to sort relocs in an optimal manner for the
4355 dynamic linker, before writing them out. */
4356
4357static enum elf_reloc_type_class
cae1fbbb 4358elf_x86_64_reloc_type_class (const struct bfd_link_info *info,
7e612e98
AM		 4359 const asection *rel_sec ATTRIBUTE_UNUSED,
4360 const Elf_Internal_Rela *rela)
c434dee6 4361{
cae1fbbb
L		 4362 bfd *abfd = info->output_bfd;
4363 const struct elf_backend_data *bed = get_elf_backend_data (abfd);
0afcef53
L		 4364 struct elf_x86_link_hash_table *htab
4365 = elf_x86_hash_table (info, X86_64_ELF_DATA);
cae1fbbb 4366
d9e3b590
L		 4367 if (htab->elf.dynsym != NULL
4368 && htab->elf.dynsym->contents != NULL)
4369 {
4370 /* Check relocation against STT_GNU_IFUNC symbol if there are
4371 dynamic symbols. */
4372 unsigned long r_symndx = htab->r_sym (rela->r_info);
897463b1
L		 4373 if (r_symndx != STN_UNDEF)
4374 {
4375 Elf_Internal_Sym sym;
4376 if (!bed->s->swap_symbol_in (abfd,
4377 (htab->elf.dynsym->contents
4378 + r_symndx * bed->s->sizeof_sym),
4379 0, &sym))
4380 abort ();
d9e3b590 4381
897463b1
L		 4382 if (ELF_ST_TYPE (sym.st_info) == STT_GNU_IFUNC)
4383 return reloc_class_ifunc;
4384 }
d9e3b590 4385 }
cae1fbbb 4386
351f65ca 4387 switch ((int) ELF32_R_TYPE (rela->r_info))
c434dee6 4388 {
c428ce9d
L		 4389 case R_X86_64_IRELATIVE:
4390 return reloc_class_ifunc;
c434dee6 4391 case R_X86_64_RELATIVE:
1da80baa 4392 case R_X86_64_RELATIVE64:
c434dee6
AJ		 4393 return reloc_class_relative;
4394 case R_X86_64_JUMP_SLOT:
4395 return reloc_class_plt;
4396 case R_X86_64_COPY:
4397 return reloc_class_copy;
4398 default:
4399 return reloc_class_normal;
4400 }
4401}
4402
70256ad8
AJ		 4403/* Finish up the dynamic sections. */
4404
b34976b6 4405static bfd_boolean
351f65ca
L		 4406elf_x86_64_finish_dynamic_sections (bfd *output_bfd,
4407 struct bfd_link_info *info)
70256ad8 4408{
0afcef53 4409 struct elf_x86_link_hash_table *htab;
70256ad8
AJ		 4410 bfd *dynobj;
4411 asection *sdyn;
70256ad8 4412
0afcef53 4413 htab = elf_x86_hash_table (info, X86_64_ELF_DATA);
4dfe6ac6
NC		 4414 if (htab == NULL)
4415 return FALSE;
4416
c434dee6 4417 dynobj = htab->elf.dynobj;
3d4d4302 4418 sdyn = bfd_get_linker_section (dynobj, ".dynamic");
70256ad8 4419
c434dee6 4420 if (htab->elf.dynamic_sections_created)
70256ad8 4421 {
82e96e07
L		 4422 bfd_byte *dyncon, *dynconend;
4423 const struct elf_backend_data *bed;
4424 bfd_size_type sizeof_dyn;
70256ad8 4425
6de2ae4a 4426 if (sdyn == NULL || htab->elf.sgot == NULL)
c434dee6 4427 abort ();
70256ad8 4428
82e96e07
L		 4429 bed = get_elf_backend_data (dynobj);
4430 sizeof_dyn = bed->s->sizeof_dyn;
4431 dyncon = sdyn->contents;
4432 dynconend = sdyn->contents + sdyn->size;
4433 for (; dyncon < dynconend; dyncon += sizeof_dyn)
70256ad8
AJ		 4434 {
4435 Elf_Internal_Dyn dyn;
70256ad8
AJ		 4436 asection *s;
4437
82e96e07 4438 (*bed->s->swap_dyn_in) (dynobj, dyncon, &dyn);
70256ad8
AJ		 4439
4440 switch (dyn.d_tag)
4441 {
4442 default:
053579d7 4443 continue;
70256ad8
AJ		 4444
4445 case DT_PLTGOT:
6de2ae4a 4446 s = htab->elf.sgotplt;
8c37241b 4447 dyn.d_un.d_ptr = s->output_section->vma + s->output_offset;
c434dee6 4448 break;
70256ad8
AJ		 4449
4450 case DT_JMPREL:
6de2ae4a 4451 dyn.d_un.d_ptr = htab->elf.srelplt->output_section->vma;
c434dee6 4452 break;
70256ad8 4453
c434dee6 4454 case DT_PLTRELSZ:
6de2ae4a 4455 s = htab->elf.srelplt->output_section;
eea6121a 4456 dyn.d_un.d_val = s->size;
70256ad8
AJ		 4457 break;
4458
67a4f2b7 4459 case DT_TLSDESC_PLT:
6de2ae4a 4460 s = htab->elf.splt;
67a4f2b7
AO		 4461 dyn.d_un.d_ptr = s->output_section->vma + s->output_offset
4462 + htab->tlsdesc_plt;
4463 break;
4464
4465 case DT_TLSDESC_GOT:
6de2ae4a 4466 s = htab->elf.sgot;
67a4f2b7
AO		 4467 dyn.d_un.d_ptr = s->output_section->vma + s->output_offset
4468 + htab->tlsdesc_got;
4469 break;
70256ad8 4470 }
c434dee6 4471
82e96e07 4472 (*bed->s->swap_dyn_out) (output_bfd, &dyn, dyncon);
70256ad8
AJ		 4473 }
4474
6de2ae4a 4475 if (htab->elf.splt && htab->elf.splt->size > 0)
70256ad8 4476 {
eed180f8 4477 elf_section_data (htab->elf.splt->output_section)
765e526c 4478 ->this_hdr.sh_entsize = htab->plt.plt_entry_size;
67a4f2b7 4479
765e526c 4480 if (htab->plt.has_plt0)
67a4f2b7 4481 {
38b12349
L		 4482 /* Fill in the special first entry in the procedure linkage
4483 table. */
4484 memcpy (htab->elf.splt->contents,
765e526c
L		 4485 htab->lazy_plt->plt0_entry,
4486 htab->lazy_plt->plt0_entry_size);
38b12349
L		 4487 /* Add offset for pushq GOT+8(%rip), since the instruction
4488 uses 6 bytes subtract this value. */
67a4f2b7 4489 bfd_put_32 (output_bfd,
6de2ae4a
L		 4490 (htab->elf.sgotplt->output_section->vma
4491 + htab->elf.sgotplt->output_offset
67a4f2b7 4492 + 8
6de2ae4a
L		 4493 - htab->elf.splt->output_section->vma
4494 - htab->elf.splt->output_offset
67a4f2b7 4495 - 6),
38b12349 4496 (htab->elf.splt->contents
765e526c 4497 + htab->lazy_plt->plt0_got1_offset));
38b12349
L		 4498 /* Add offset for the PC-relative instruction accessing
4499 GOT+16, subtracting the offset to the end of that
4500 instruction. */
67a4f2b7 4501 bfd_put_32 (output_bfd,
38b12349
L		 4502 (htab->elf.sgotplt->output_section->vma
4503 + htab->elf.sgotplt->output_offset
4504 + 16
6de2ae4a
L		 4505 - htab->elf.splt->output_section->vma
4506 - htab->elf.splt->output_offset
765e526c 4507 - htab->lazy_plt->plt0_got2_insn_end),
38b12349 4508 (htab->elf.splt->contents
765e526c 4509 + htab->lazy_plt->plt0_got2_offset));
38b12349
L		 4510
4511 if (htab->tlsdesc_plt)
4512 {
4513 bfd_put_64 (output_bfd, (bfd_vma) 0,
4514 htab->elf.sgot->contents + htab->tlsdesc_got);
4515
4516 memcpy (htab->elf.splt->contents + htab->tlsdesc_plt,
765e526c
L		 4517 htab->lazy_plt->plt0_entry,
4518 htab->lazy_plt->plt0_entry_size);
38b12349
L		 4519
4520 /* Add offset for pushq GOT+8(%rip), since the
4521 instruction uses 6 bytes subtract this value. */
4522 bfd_put_32 (output_bfd,
4523 (htab->elf.sgotplt->output_section->vma
4524 + htab->elf.sgotplt->output_offset
4525 + 8
4526 - htab->elf.splt->output_section->vma
4527 - htab->elf.splt->output_offset
4528 - htab->tlsdesc_plt
4529 - 6),
4530 (htab->elf.splt->contents
4531 + htab->tlsdesc_plt
765e526c 4532 + htab->lazy_plt->plt0_got1_offset));
38b12349
L		 4533 /* Add offset for the PC-relative instruction accessing
4534 GOT+TDG, where TDG stands for htab->tlsdesc_got,
4535 subtracting the offset to the end of that
4536 instruction. */
4537 bfd_put_32 (output_bfd,
4538 (htab->elf.sgot->output_section->vma
4539 + htab->elf.sgot->output_offset
4540 + htab->tlsdesc_got
4541 - htab->elf.splt->output_section->vma
4542 - htab->elf.splt->output_offset
4543 - htab->tlsdesc_plt
765e526c 4544 - htab->lazy_plt->plt0_got2_insn_end),
38b12349
L		 4545 (htab->elf.splt->contents
4546 + htab->tlsdesc_plt
765e526c 4547 + htab->lazy_plt->plt0_got2_offset));
38b12349 4548 }
67a4f2b7 4549 }
70256ad8 4550 }
70256ad8 4551
0afcef53
L		 4552 if (htab->plt_got != NULL && htab->plt_got->size > 0)
4553 elf_section_data (htab->plt_got->output_section)
765e526c 4554 ->this_hdr.sh_entsize = htab->non_lazy_plt->plt_entry_size;
38b12349 4555
0afcef53
L		 4556 if (htab->plt_second != NULL && htab->plt_second->size > 0)
4557 elf_section_data (htab->plt_second->output_section)
765e526c 4558 ->this_hdr.sh_entsize = htab->non_lazy_plt->plt_entry_size;
0afcef53 4559 }
0ff2b86e 4560
38b12349
L		 4561 /* GOT is always created in setup_gnu_properties. But it may not be
4562 needed. */
4563 if (htab->elf.sgotplt && htab->elf.sgotplt->size > 0)
70256ad8 4564 {
56d4289c
L		 4565 if (bfd_is_abs_section (htab->elf.sgotplt->output_section))
4566 {
4eca0228 4567 _bfd_error_handler
56d4289c
L		 4568 (_("discarded output section: `%A'"), htab->elf.sgotplt);
4569 return FALSE;
4570 }
4571
38b12349
L		 4572 /* Set the first entry in the global offset table to the address of
4573 the dynamic section. */
4574 if (sdyn == NULL)
4575 bfd_put_64 (output_bfd, (bfd_vma) 0, htab->elf.sgotplt->contents);
4576 else
4577 bfd_put_64 (output_bfd,
4578 sdyn->output_section->vma + sdyn->output_offset,
4579 htab->elf.sgotplt->contents);
4580 /* Write GOT[1] and GOT[2], needed for the dynamic linker. */
4581 bfd_put_64 (output_bfd, (bfd_vma) 0,
4582 htab->elf.sgotplt->contents + GOT_ENTRY_SIZE);
4583 bfd_put_64 (output_bfd, (bfd_vma) 0,
4584 htab->elf.sgotplt->contents + GOT_ENTRY_SIZE*2);
4585
4586 elf_section_data (htab->elf.sgotplt->output_section)->this_hdr.sh_entsize
4587 = GOT_ENTRY_SIZE;
c434dee6 4588 }
70256ad8 4589
e41b3a13 4590 /* Adjust .eh_frame for .plt section. */
9a2a56cc
AM		 4591 if (htab->plt_eh_frame != NULL
4592 && htab->plt_eh_frame->contents != NULL)
e41b3a13
JJ		 4593 {
4594 if (htab->elf.splt != NULL
4595 && htab->elf.splt->size != 0
4596 && (htab->elf.splt->flags & SEC_EXCLUDE) == 0
4597 && htab->elf.splt->output_section != NULL
4598 && htab->plt_eh_frame->output_section != NULL)
4599 {
4600 bfd_vma plt_start = htab->elf.splt->output_section->vma;
4601 bfd_vma eh_frame_start = htab->plt_eh_frame->output_section->vma
4602 + htab->plt_eh_frame->output_offset
4603 + PLT_FDE_START_OFFSET;
4604 bfd_put_signed_32 (dynobj, plt_start - eh_frame_start,
4605 htab->plt_eh_frame->contents
4606 + PLT_FDE_START_OFFSET);
4607 }
dbaa2011 4608 if (htab->plt_eh_frame->sec_info_type == SEC_INFO_TYPE_EH_FRAME)
e41b3a13
JJ		 4609 {
4610 if (! _bfd_elf_write_section_eh_frame (output_bfd, info,
4611 htab->plt_eh_frame,
4612 htab->plt_eh_frame->contents))
4613 return FALSE;
4614 }
4615 }
4616
fff53dae
L		 4617 /* Adjust .eh_frame for .plt.got section. */
4618 if (htab->plt_got_eh_frame != NULL
4619 && htab->plt_got_eh_frame->contents != NULL)
4620 {
4621 if (htab->plt_got != NULL
4622 && htab->plt_got->size != 0
4623 && (htab->plt_got->flags & SEC_EXCLUDE) == 0
4624 && htab->plt_got->output_section != NULL
4625 && htab->plt_got_eh_frame->output_section != NULL)
4626 {
4627 bfd_vma plt_start = htab->plt_got->output_section->vma;
4628 bfd_vma eh_frame_start = htab->plt_got_eh_frame->output_section->vma
4629 + htab->plt_got_eh_frame->output_offset
4630 + PLT_FDE_START_OFFSET;
4631 bfd_put_signed_32 (dynobj, plt_start - eh_frame_start,
4632 htab->plt_got_eh_frame->contents
4633 + PLT_FDE_START_OFFSET);
4634 }
4635 if (htab->plt_got_eh_frame->sec_info_type == SEC_INFO_TYPE_EH_FRAME)
4636 {
4637 if (! _bfd_elf_write_section_eh_frame (output_bfd, info,
4638 htab->plt_got_eh_frame,
4639 htab->plt_got_eh_frame->contents))
4640 return FALSE;
4641 }
4642 }
4643
f2c29a16
L		 4644 /* Adjust .eh_frame for the second PLT section. */
4645 if (htab->plt_second_eh_frame != NULL
4646 && htab->plt_second_eh_frame->contents != NULL)
8361ed4d 4647 {
f2c29a16
L		 4648 if (htab->plt_second != NULL
4649 && htab->plt_second->size != 0
4650 && (htab->plt_second->flags & SEC_EXCLUDE) == 0
4651 && htab->plt_second->output_section != NULL
4652 && htab->plt_second_eh_frame->output_section != NULL)
8361ed4d 4653 {
f2c29a16
L		 4654 bfd_vma plt_start = htab->plt_second->output_section->vma;
4655 bfd_vma eh_frame_start
4656 = (htab->plt_second_eh_frame->output_section->vma
4657 + htab->plt_second_eh_frame->output_offset
4658 + PLT_FDE_START_OFFSET);
8361ed4d 4659 bfd_put_signed_32 (dynobj, plt_start - eh_frame_start,
f2c29a16 4660 htab->plt_second_eh_frame->contents
8361ed4d
L		 4661 + PLT_FDE_START_OFFSET);
4662 }
f2c29a16
L		 4663 if (htab->plt_second_eh_frame->sec_info_type
4664 == SEC_INFO_TYPE_EH_FRAME)
8361ed4d
L		 4665 {
4666 if (! _bfd_elf_write_section_eh_frame (output_bfd, info,
f2c29a16
L		 4667 htab->plt_second_eh_frame,
4668 htab->plt_second_eh_frame->contents))
8361ed4d
L		 4669 return FALSE;
4670 }
4671 }
4672
6de2ae4a
L		 4673 if (htab->elf.sgot && htab->elf.sgot->size > 0)
4674 elf_section_data (htab->elf.sgot->output_section)->this_hdr.sh_entsize
8c37241b
JJ		 4675 = GOT_ENTRY_SIZE;
4676
aec6b87e
L		 4677 /* Fill PLT entries for undefined weak symbols in PIE. */
4678 if (bfd_link_pie (info))
4679 bfd_hash_traverse (&info->hash->table,
4680 elf_x86_64_pie_finish_undefweak_symbol,
4681 info);
4682
b34976b6 4683 return TRUE;
8d88c4ca
NC		 4684}
4685
233cc9c1
L		 4686/* Fill PLT/GOT entries and allocate dynamic relocations for local
4687 STT_GNU_IFUNC symbols, which aren't in the ELF linker hash table.
4688 It has to be done before elf_link_sort_relocs is called so that
4689 dynamic relocations are properly sorted. */
4690
4691static bfd_boolean
4692elf_x86_64_output_arch_local_syms
4693 (bfd *output_bfd ATTRIBUTE_UNUSED,
4694 struct bfd_link_info *info,
4695 void *flaginfo ATTRIBUTE_UNUSED,
4696 int (*func) (void *, const char *,
4697 Elf_Internal_Sym *,
4698 asection *,
4699 struct elf_link_hash_entry *) ATTRIBUTE_UNUSED)
4700{
0afcef53
L		 4701 struct elf_x86_link_hash_table *htab
4702 = elf_x86_hash_table (info, X86_64_ELF_DATA);
233cc9c1
L		 4703 if (htab == NULL)
4704 return FALSE;
4705
4706 /* Fill PLT and GOT entries for local STT_GNU_IFUNC symbols. */
4707 htab_traverse (htab->loc_hash_table,
4708 elf_x86_64_finish_local_dynamic_symbol,
4709 info);
4710
4711 return TRUE;
4712}
4713
38b12349 4714/* Forward declaration. */
765e526c 4715static const struct elf_x86_lazy_plt_layout elf_x86_64_nacl_plt;
38b12349
L		 4716
4717/* Similar to _bfd_elf_get_synthetic_symtab. Support PLTs with all
4718 dynamic relocations. */
4719
4720static long
4721elf_x86_64_get_synthetic_symtab (bfd *abfd,
4722 long symcount ATTRIBUTE_UNUSED,
4723 asymbol **syms ATTRIBUTE_UNUSED,
4724 long dynsymcount,
4725 asymbol **dynsyms,
4726 asymbol **ret)
4727{
f493882d 4728 long count, i, n;
38b12349 4729 int j;
38b12349 4730 bfd_byte *plt_contents;
f493882d 4731 long relsize;
765e526c
L		 4732 const struct elf_x86_lazy_plt_layout *lazy_plt;
4733 const struct elf_x86_non_lazy_plt_layout *non_lazy_plt;
4734 const struct elf_x86_lazy_plt_layout *lazy_bnd_plt;
4735 const struct elf_x86_non_lazy_plt_layout *non_lazy_bnd_plt;
4736 const struct elf_x86_lazy_plt_layout *lazy_ibt_plt;
4737 const struct elf_x86_non_lazy_plt_layout *non_lazy_ibt_plt;
38b12349 4738 asection *plt;
f493882d
L		 4739 enum elf_x86_plt_type plt_type;
4740 struct elf_x86_plt plts[] =
144bed8d 4741 {
38b12349
L		 4742 { ".plt", NULL, NULL, plt_unknown, 0, 0, 0, 0 },
4743 { ".plt.got", NULL, NULL, plt_non_lazy, 0, 0, 0, 0 },
f2c29a16
L		 4744 { ".plt.sec", NULL, NULL, plt_second, 0, 0, 0, 0 },
4745 { ".plt.bnd", NULL, NULL, plt_second, 0, 0, 0, 0 },
dd9e66ee 4746 { NULL, NULL, NULL, plt_non_lazy, 0, 0, 0, 0 }
38b12349 4747 };
144bed8d 4748
38b12349 4749 *ret = NULL;
144bed8d 4750
38b12349
L		 4751 if ((abfd->flags & (DYNAMIC | EXEC_P)) == 0)
4752 return 0;
144bed8d 4753
38b12349
L		 4754 if (dynsymcount <= 0)
4755 return 0;
cca5b8b6 4756
38b12349
L		 4757 relsize = bfd_get_dynamic_reloc_upper_bound (abfd);
4758 if (relsize <= 0)
4759 return -1;
4760
38b12349 4761 if (get_elf_x86_64_backend_data (abfd)->os == is_normal)
144bed8d 4762 {
38b12349
L		 4763 lazy_plt = &elf_x86_64_lazy_plt;
4764 non_lazy_plt = &elf_x86_64_non_lazy_plt;
4765 lazy_bnd_plt = &elf_x86_64_lazy_bnd_plt;
4766 non_lazy_bnd_plt = &elf_x86_64_non_lazy_bnd_plt;
ee2fdd6f
L		 4767 if (ABI_64_P (abfd))
4768 {
4769 lazy_ibt_plt = &elf_x86_64_lazy_ibt_plt;
4770 non_lazy_ibt_plt = &elf_x86_64_non_lazy_ibt_plt;
4771 }
4772 else
4773 {
4774 lazy_ibt_plt = &elf_x32_lazy_ibt_plt;
4775 non_lazy_ibt_plt = &elf_x32_non_lazy_ibt_plt;
4776 }
38b12349
L		 4777 }
4778 else
4779 {
4780 lazy_plt = &elf_x86_64_nacl_plt;
4781 non_lazy_plt = NULL;
4782 lazy_bnd_plt = NULL;
4783 non_lazy_bnd_plt = NULL;
ee2fdd6f
L		 4784 lazy_ibt_plt = NULL;
4785 non_lazy_ibt_plt = NULL;
38b12349 4786 }
144bed8d 4787
38b12349
L		 4788 count = 0;
4789 for (j = 0; plts[j].name != NULL; j++)
4790 {
4791 plt = bfd_get_section_by_name (abfd, plts[j].name);
90efb642 4792 if (plt == NULL || plt->size == 0)
6f25f223 4793 continue;
533d0af0 4794
38b12349
L		 4795 /* Get the PLT section contents. */
4796 plt_contents = (bfd_byte *) bfd_malloc (plt->size);
4797 if (plt_contents == NULL)
4798 break;
4799 if (!bfd_get_section_contents (abfd, (asection *) plt,
4800 plt_contents, 0, plt->size))
4801 {
4802 free (plt_contents);
4803 break;
4804 }
144bed8d 4805
38b12349
L		 4806 /* Check what kind of PLT it is. */
4807 plt_type = plt_unknown;
90efb642
L		 4808 if (plts[j].type == plt_unknown
4809 && (plt->size >= (lazy_plt->plt_entry_size
4810 + lazy_plt->plt_entry_size)))
144bed8d 4811 {
38b12349
L		 4812 /* Match lazy PLT first. Need to check the first two
4813 instructions. */
4814 if ((memcmp (plt_contents, lazy_plt->plt0_entry,
4815 lazy_plt->plt0_got1_offset) == 0)
4816 && (memcmp (plt_contents + 6, lazy_plt->plt0_entry + 6,
4817 2) == 0))
4818 plt_type = plt_lazy;
4819 else if (lazy_bnd_plt != NULL
4820 && (memcmp (plt_contents, lazy_bnd_plt->plt0_entry,
4821 lazy_bnd_plt->plt0_got1_offset) == 0)
4822 && (memcmp (plt_contents + 6,
4823 lazy_bnd_plt->plt0_entry + 6, 3) == 0))
ec1f73bb 4824 {
f2c29a16 4825 plt_type = plt_lazy | plt_second;
ee2fdd6f
L		 4826 /* The fist entry in the lazy IBT PLT is the same as the
4827 lazy BND PLT. */
4828 if ((memcmp (plt_contents + lazy_ibt_plt->plt_entry_size,
4829 lazy_ibt_plt->plt_entry,
4830 lazy_ibt_plt->plt_got_offset) == 0))
4831 lazy_plt = lazy_ibt_plt;
4832 else
4833 lazy_plt = lazy_bnd_plt;
ec1f73bb 4834 }
144bed8d 4835 }
fca6ae69 4836
38b12349 4837 if (non_lazy_plt != NULL
90efb642
L		 4838 && (plt_type == plt_unknown || plt_type == plt_non_lazy)
4839 && plt->size >= non_lazy_plt->plt_entry_size)
38b12349
L		 4840 {
4841 /* Match non-lazy PLT. */
4842 if (memcmp (plt_contents, non_lazy_plt->plt_entry,
4843 non_lazy_plt->plt_got_offset) == 0)
4844 plt_type = plt_non_lazy;
4845 }
4846
ee2fdd6f 4847 if (plt_type == plt_unknown || plt_type == plt_second)
38b12349 4848 {
ee2fdd6f 4849 if (non_lazy_bnd_plt != NULL
90efb642 4850 && plt->size >= non_lazy_bnd_plt->plt_entry_size
ee2fdd6f
L		 4851 && (memcmp (plt_contents, non_lazy_bnd_plt->plt_entry,
4852 non_lazy_bnd_plt->plt_got_offset) == 0))
38b12349 4853 {
ee2fdd6f 4854 /* Match BND PLT. */
f2c29a16 4855 plt_type = plt_second;
38b12349
L		 4856 non_lazy_plt = non_lazy_bnd_plt;
4857 }
ee2fdd6f 4858 else if (non_lazy_ibt_plt != NULL
90efb642 4859 && plt->size >= non_lazy_ibt_plt->plt_entry_size
ee2fdd6f
L		 4860 && (memcmp (plt_contents,
4861 non_lazy_ibt_plt->plt_entry,
4862 non_lazy_ibt_plt->plt_got_offset) == 0))
4863 {
4864 /* Match IBT PLT. */
4865 plt_type = plt_second;
4866 non_lazy_plt = non_lazy_ibt_plt;
4867 }
38b12349
L		 4868 }
4869
4870 if (plt_type == plt_unknown)
37c0b6ee
L		 4871 {
4872 free (plt_contents);
4873 continue;
4874 }
38b12349
L		 4875
4876 plts[j].sec = plt;
4877 plts[j].type = plt_type;
4878
4879 if ((plt_type & plt_lazy))
4880 {
4881 plts[j].plt_got_offset = lazy_plt->plt_got_offset;
4882 plts[j].plt_got_insn_size = lazy_plt->plt_got_insn_size;
4883 plts[j].plt_entry_size = lazy_plt->plt_entry_size;
4884 /* Skip PLT0 in lazy PLT. */
4885 i = 1;
4886 }
4887 else
4888 {
4889 plts[j].plt_got_offset = non_lazy_plt->plt_got_offset;
4890 plts[j].plt_got_insn_size = non_lazy_plt->plt_got_insn_size;
4891 plts[j].plt_entry_size = non_lazy_plt->plt_entry_size;
4892 i = 0;
4893 }
4894
f2c29a16
L		 4895 /* Skip lazy PLT when the second PLT is used. */
4896 if (plt_type == (plt_lazy | plt_second))
38b12349
L		 4897 plts[j].count = 0;
4898 else
4899 {
4900 n = plt->size / plts[j].plt_entry_size;
4901 plts[j].count = n;
4902 count += n - i;
4903 }
4904
4905 plts[j].contents = plt_contents;
144bed8d
L		 4906 }
4907
f493882d
L		 4908 return _bfd_x86_elf_get_synthetic_symtab (abfd, count, relsize,
4909 (bfd_vma) 0, plts, dynsyms,
4910 ret);
0ff2b86e
L		 4911}
4912
d2b2c203
DJ		 4913/* Handle an x86-64 specific section when reading an object file. This
4914 is called when elfcode.h finds a section with an unknown type. */
4915
4916static bfd_boolean
0c723101
L		 4917elf_x86_64_section_from_shdr (bfd *abfd, Elf_Internal_Shdr *hdr,
4918 const char *name, int shindex)
d2b2c203
DJ		 4919{
4920 if (hdr->sh_type != SHT_X86_64_UNWIND)
4921 return FALSE;
4922
6dc132d9 4923 if (! _bfd_elf_make_section_from_shdr (abfd, hdr, name, shindex))
d2b2c203
DJ		 4924 return FALSE;
4925
4926 return TRUE;
4927}
4928
3b22753a
L		 4929/* Hook called by the linker routine which adds symbols from an object
4930 file. We use it to put SHN_X86_64_LCOMMON items in .lbss, instead
4931 of .bss. */
4932
4933static bfd_boolean
351f65ca 4934elf_x86_64_add_symbol_hook (bfd *abfd,
a43942db 4935 struct bfd_link_info *info ATTRIBUTE_UNUSED,
351f65ca
L		 4936 Elf_Internal_Sym *sym,
4937 const char **namep ATTRIBUTE_UNUSED,
4938 flagword *flagsp ATTRIBUTE_UNUSED,
4939 asection **secp,
4940 bfd_vma *valp)
3b22753a
L		 4941{
4942 asection *lcomm;
4943
4944 switch (sym->st_shndx)
4945 {
4946 case SHN_X86_64_LCOMMON:
4947 lcomm = bfd_get_section_by_name (abfd, "LARGE_COMMON");
4948 if (lcomm == NULL)
4949 {
4950 lcomm = bfd_make_section_with_flags (abfd,
4951 "LARGE_COMMON",
4952 (SEC_ALLOC
4953 | SEC_IS_COMMON
4954 | SEC_LINKER_CREATED));
4955 if (lcomm == NULL)
4956 return FALSE;
4957 elf_section_flags (lcomm) |= SHF_X86_64_LARGE;
4958 }
4959 *secp = lcomm;
4960 *valp = sym->st_size;
c35bdf6e 4961 return TRUE;
3b22753a 4962 }
d8045f23 4963
3b22753a
L		 4964 return TRUE;
4965}
4966
4967
4968/* Given a BFD section, try to locate the corresponding ELF section
4969 index. */
4970
4971static bfd_boolean
351f65ca
L		 4972elf_x86_64_elf_section_from_bfd_section (bfd *abfd ATTRIBUTE_UNUSED,
4973 asection *sec, int *index_return)
3b22753a
L		 4974{
4975 if (sec == &_bfd_elf_large_com_section)
4976 {
91d6fa6a 4977 *index_return = SHN_X86_64_LCOMMON;
3b22753a
L		 4978 return TRUE;
4979 }
4980 return FALSE;
4981}
4982
4983/* Process a symbol. */
4984
4985static void
351f65ca
L		 4986elf_x86_64_symbol_processing (bfd *abfd ATTRIBUTE_UNUSED,
4987 asymbol *asym)
3b22753a
L		 4988{
4989 elf_symbol_type *elfsym = (elf_symbol_type *) asym;
4990
4991 switch (elfsym->internal_elf_sym.st_shndx)
4992 {
4993 case SHN_X86_64_LCOMMON:
4994 asym->section = &_bfd_elf_large_com_section;
4995 asym->value = elfsym->internal_elf_sym.st_size;
4996 /* Common symbol doesn't set BSF_GLOBAL. */
4997 asym->flags &= ~BSF_GLOBAL;
4998 break;
4999 }
5000}
5001
5002static bfd_boolean
351f65ca 5003elf_x86_64_common_definition (Elf_Internal_Sym *sym)
3b22753a
L		 5004{
5005 return (sym->st_shndx == SHN_COMMON
5006 || sym->st_shndx == SHN_X86_64_LCOMMON);
5007}
5008
5009static unsigned int
351f65ca 5010elf_x86_64_common_section_index (asection *sec)
3b22753a
L		 5011{
5012 if ((elf_section_flags (sec) & SHF_X86_64_LARGE) == 0)
5013 return SHN_COMMON;
5014 else
5015 return SHN_X86_64_LCOMMON;
5016}
5017
5018static asection *
351f65ca 5019elf_x86_64_common_section (asection *sec)
3b22753a
L		 5020{
5021 if ((elf_section_flags (sec) & SHF_X86_64_LARGE) == 0)
5022 return bfd_com_section_ptr;
5023 else
5024 return &_bfd_elf_large_com_section;
5025}
5026
5027static bfd_boolean
5d13b3b3
AM		 5028elf_x86_64_merge_symbol (struct elf_link_hash_entry *h,
5029 const Elf_Internal_Sym *sym,
351f65ca 5030 asection **psec,
5d13b3b3
AM		 5031 bfd_boolean newdef,
5032 bfd_boolean olddef,
351f65ca 5033 bfd *oldbfd,
5d13b3b3 5034 const asection *oldsec)
3b22753a
L		 5035{
5036 /* A normal common symbol and a large common symbol result in a
00492999
L		 5037 normal common symbol. We turn the large common symbol into a
5038 normal one. */
5d13b3b3 5039 if (!olddef
3b22753a 5040 && h->root.type == bfd_link_hash_common
5d13b3b3
AM		 5041 && !newdef
5042 && bfd_is_com_section (*psec)
5043 && oldsec != *psec)
3b22753a 5044 {
00492999 5045 if (sym->st_shndx == SHN_COMMON
5d13b3b3 5046 && (elf_section_flags (oldsec) & SHF_X86_64_LARGE) != 0)
00492999
L		 5047 {
5048 h->root.u.c.p->section
5049 = bfd_make_section_old_way (oldbfd, "COMMON");
5050 h->root.u.c.p->section->flags = SEC_ALLOC;
5051 }
5052 else if (sym->st_shndx == SHN_X86_64_LCOMMON
5d13b3b3
AM		 5053 && (elf_section_flags (oldsec) & SHF_X86_64_LARGE) == 0)
5054 *psec = bfd_com_section_ptr;
3b22753a
L		 5055 }
5056
5057 return TRUE;
5058}
5059
5060static int
351f65ca
L		 5061elf_x86_64_additional_program_headers (bfd *abfd,
5062 struct bfd_link_info *info ATTRIBUTE_UNUSED)
3b22753a
L		 5063{
5064 asection *s;
9a2e389a 5065 int count = 0;
3b22753a
L		 5066
5067 /* Check to see if we need a large readonly segment. */
5068 s = bfd_get_section_by_name (abfd, ".lrodata");
5069 if (s && (s->flags & SEC_LOAD))
5070 count++;
5071
5072 /* Check to see if we need a large data segment. Since .lbss sections
5073 is placed right after the .bss section, there should be no need for
5074 a large data segment just because of .lbss. */
5075 s = bfd_get_section_by_name (abfd, ".ldata");
5076 if (s && (s->flags & SEC_LOAD))
5077 count++;
5078
5079 return count;
5080}
5081
c543bf9a
L		 5082/* Return TRUE iff relocations for INPUT are compatible with OUTPUT. */
5083
5084static bfd_boolean
5085elf_x86_64_relocs_compatible (const bfd_target *input,
5086 const bfd_target *output)
5087{
5088 return ((xvec_get_elf_backend_data (input)->s->elfclass
5089 == xvec_get_elf_backend_data (output)->s->elfclass)
5090 && _bfd_elf_relocs_compatible (input, output));
5091}
5092
38b12349
L		 5093/* Set up x86-64 GNU properties. Return the first relocatable ELF input
5094 with GNU properties if found. Otherwise, return NULL. */
5095
5096static bfd *
5097elf_x86_64_link_setup_gnu_properties (struct bfd_link_info *info)
5098{
1de031c8 5099 struct elf_x86_init_table init_table;
ee2fdd6f 5100
78984959
L		 5101 if ((int) R_X86_64_standard >= (int) R_X86_64_converted_reloc_bit
5102 || (int) R_X86_64_max <= (int) R_X86_64_converted_reloc_bit
5103 || ((int) (R_X86_64_GNU_VTINHERIT | R_X86_64_converted_reloc_bit)
5104 != (int) R_X86_64_GNU_VTINHERIT)
5105 || ((int) (R_X86_64_GNU_VTENTRY | R_X86_64_converted_reloc_bit)
5106 != (int) R_X86_64_GNU_VTENTRY))
5107 abort ();
5108
1de031c8 5109 init_table.is_vxworks = FALSE;
a6798bab 5110 if (get_elf_x86_64_backend_data (info->output_bfd)->os == is_normal)
73784fa5 5111 {
a6798bab 5112 if (info->bndplt)
ee2fdd6f 5113 {
1de031c8
L		 5114 init_table.lazy_plt = &elf_x86_64_lazy_bnd_plt;
5115 init_table.non_lazy_plt = &elf_x86_64_non_lazy_bnd_plt;
ee2fdd6f
L		 5116 }
5117 else
5118 {
1de031c8
L		 5119 init_table.lazy_plt = &elf_x86_64_lazy_plt;
5120 init_table.non_lazy_plt = &elf_x86_64_non_lazy_plt;
ee2fdd6f 5121 }
38b12349 5122
a6798bab 5123 if (ABI_64_P (info->output_bfd))
38b12349 5124 {
1de031c8
L		 5125 init_table.lazy_ibt_plt = &elf_x86_64_lazy_ibt_plt;
5126 init_table.non_lazy_ibt_plt = &elf_x86_64_non_lazy_ibt_plt;
38b12349
L		 5127 }
5128 else
5129 {
1de031c8
L		 5130 init_table.lazy_ibt_plt = &elf_x32_lazy_ibt_plt;
5131 init_table.non_lazy_ibt_plt = &elf_x32_non_lazy_ibt_plt;
38b12349 5132 }
1de031c8 5133 init_table.normal_target = TRUE;
38b12349
L		 5134 }
5135 else
5136 {
1de031c8
L		 5137 init_table.lazy_plt = &elf_x86_64_nacl_plt;
5138 init_table.non_lazy_plt = NULL;
5139 init_table.lazy_ibt_plt = NULL;
5140 init_table.non_lazy_ibt_plt = NULL;
5141 init_table.normal_target = FALSE;
38b12349
L		 5142 }
5143
7a382c1c
L		 5144 if (ABI_64_P (info->output_bfd))
5145 {
1de031c8
L		 5146 init_table.r_info = elf64_r_info;
5147 init_table.r_sym = elf64_r_sym;
7a382c1c
L		 5148 }
5149 else
5150 {
1de031c8
L		 5151 init_table.r_info = elf32_r_info;
5152 init_table.r_sym = elf32_r_sym;
7a382c1c
L		 5153 }
5154
1de031c8 5155 return _bfd_x86_elf_link_setup_gnu_properties (info, &init_table);
38b12349
L		 5156}
5157
9a2e389a 5158static const struct bfd_elf_special_section
46bed679 5159elf_x86_64_special_sections[]=
3b22753a 5160{
0112cd26
NC		 5161 { STRING_COMMA_LEN (".gnu.linkonce.lb"), -2, SHT_NOBITS, SHF_ALLOC + SHF_WRITE + SHF_X86_64_LARGE},
5162 { STRING_COMMA_LEN (".gnu.linkonce.lr"), -2, SHT_PROGBITS, SHF_ALLOC + SHF_X86_64_LARGE},
5163 { STRING_COMMA_LEN (".gnu.linkonce.lt"), -2, SHT_PROGBITS, SHF_ALLOC + SHF_EXECINSTR + SHF_X86_64_LARGE},
5164 { STRING_COMMA_LEN (".lbss"), -2, SHT_NOBITS, SHF_ALLOC + SHF_WRITE + SHF_X86_64_LARGE},
5165 { STRING_COMMA_LEN (".ldata"), -2, SHT_PROGBITS, SHF_ALLOC + SHF_WRITE + SHF_X86_64_LARGE},
5166 { STRING_COMMA_LEN (".lrodata"), -2, SHT_PROGBITS, SHF_ALLOC + SHF_X86_64_LARGE},
5167 { NULL, 0, 0, 0, 0 }
3b22753a
L		 5168};
5169
6d00b590 5170#define TARGET_LITTLE_SYM x86_64_elf64_vec
70256ad8
AJ		 5171#define TARGET_LITTLE_NAME "elf64-x86-64"
5172#define ELF_ARCH bfd_arch_i386
ae95ffa6 5173#define ELF_TARGET_ID X86_64_ELF_DATA
70256ad8 5174#define ELF_MACHINE_CODE EM_X86_64
f7661549 5175#define ELF_MAXPAGESIZE 0x200000
2043964e 5176#define ELF_MINPAGESIZE 0x1000
24718e3b 5177#define ELF_COMMONPAGESIZE 0x1000
70256ad8
AJ		 5178
5179#define elf_backend_can_gc_sections 1
51b64d56 5180#define elf_backend_can_refcount 1
70256ad8
AJ		 5181#define elf_backend_want_got_plt 1
5182#define elf_backend_plt_readonly 1
5183#define elf_backend_want_plt_sym 0
5184#define elf_backend_got_header_size (GOT_ENTRY_SIZE*3)
b491616a 5185#define elf_backend_rela_normal 1
e41b3a13 5186#define elf_backend_plt_alignment 4
f7483970 5187#define elf_backend_extern_protected_data 1
bedfd056 5188#define elf_backend_caches_rawsize 1
64f52338 5189#define elf_backend_dtrel_excludes_plt 1
5474d94f 5190#define elf_backend_want_dynrelro 1
70256ad8 5191
351f65ca 5192#define elf_info_to_howto elf_x86_64_info_to_howto
70256ad8 5193
351f65ca 5194#define bfd_elf64_bfd_reloc_type_lookup elf_x86_64_reloc_type_lookup
157090f7 5195#define bfd_elf64_bfd_reloc_name_lookup \
351f65ca 5196 elf_x86_64_reloc_name_lookup
70256ad8 5197
c543bf9a 5198#define elf_backend_relocs_compatible elf_x86_64_relocs_compatible
351f65ca 5199#define elf_backend_check_relocs elf_x86_64_check_relocs
38b12349 5200#define elf_backend_create_dynamic_sections _bfd_elf_create_dynamic_sections
351f65ca
L		 5201#define elf_backend_finish_dynamic_sections elf_x86_64_finish_dynamic_sections
5202#define elf_backend_finish_dynamic_symbol elf_x86_64_finish_dynamic_symbol
233cc9c1 5203#define elf_backend_output_arch_local_syms elf_x86_64_output_arch_local_syms
351f65ca
L		 5204#define elf_backend_grok_prstatus elf_x86_64_grok_prstatus
5205#define elf_backend_grok_psinfo elf_x86_64_grok_psinfo
8fd79e71
L		 5206#ifdef CORE_HEADER
5207#define elf_backend_write_core_note elf_x86_64_write_core_note
5208#endif
351f65ca
L		 5209#define elf_backend_reloc_type_class elf_x86_64_reloc_type_class
5210#define elf_backend_relocate_section elf_x86_64_relocate_section
74541ad4 5211#define elf_backend_init_index_section _bfd_elf_init_1_index_section
407443a3 5212#define elf_backend_object_p elf64_x86_64_elf_object_p
0ff2b86e 5213#define bfd_elf64_get_synthetic_symtab elf_x86_64_get_synthetic_symtab
8d88c4ca 5214
d2b2c203 5215#define elf_backend_section_from_shdr \
351f65ca 5216 elf_x86_64_section_from_shdr
d2b2c203 5217
3b22753a 5218#define elf_backend_section_from_bfd_section \
351f65ca 5219 elf_x86_64_elf_section_from_bfd_section
3b22753a 5220#define elf_backend_add_symbol_hook \
351f65ca 5221 elf_x86_64_add_symbol_hook
3b22753a 5222#define elf_backend_symbol_processing \
351f65ca 5223 elf_x86_64_symbol_processing
3b22753a 5224#define elf_backend_common_section_index \
351f65ca 5225 elf_x86_64_common_section_index
3b22753a 5226#define elf_backend_common_section \
351f65ca 5227 elf_x86_64_common_section
3b22753a 5228#define elf_backend_common_definition \
351f65ca 5229 elf_x86_64_common_definition
3b22753a 5230#define elf_backend_merge_symbol \
351f65ca 5231 elf_x86_64_merge_symbol
3b22753a 5232#define elf_backend_special_sections \
351f65ca 5233 elf_x86_64_special_sections
3b22753a 5234#define elf_backend_additional_program_headers \
351f65ca 5235 elf_x86_64_additional_program_headers
38b12349
L		 5236#define elf_backend_setup_gnu_properties \
5237 elf_x86_64_link_setup_gnu_properties
3b22753a 5238
8d88c4ca 5239#include "elf64-target.h"
9d7cbccd 5240
6036f486
ES		 5241/* CloudABI support. */
5242
5243#undef TARGET_LITTLE_SYM
5244#define TARGET_LITTLE_SYM x86_64_elf64_cloudabi_vec
5245#undef TARGET_LITTLE_NAME
5246#define TARGET_LITTLE_NAME "elf64-x86-64-cloudabi"
5247
5248#undef ELF_OSABI
5249#define ELF_OSABI ELFOSABI_CLOUDABI
5250
5251#undef elf64_bed
5252#define elf64_bed elf64_x86_64_cloudabi_bed
5253
5254#include "elf64-target.h"
5255
9d7cbccd
NC		 5256/* FreeBSD support. */
5257
5258#undef TARGET_LITTLE_SYM
6d00b590 5259#define TARGET_LITTLE_SYM x86_64_elf64_fbsd_vec
9d7cbccd
NC		 5260#undef TARGET_LITTLE_NAME
5261#define TARGET_LITTLE_NAME "elf64-x86-64-freebsd"
5262
d1036acb
L		 5263#undef ELF_OSABI
5264#define ELF_OSABI ELFOSABI_FREEBSD
9d7cbccd 5265
9d7cbccd
NC		 5266#undef elf64_bed
5267#define elf64_bed elf64_x86_64_fbsd_bed
5268
5269#include "elf64-target.h"
8a9036a4 5270
a6cc6b3b
RO		 5271/* Solaris 2 support. */
5272
5273#undef TARGET_LITTLE_SYM
6d00b590 5274#define TARGET_LITTLE_SYM x86_64_elf64_sol2_vec
a6cc6b3b
RO		 5275#undef TARGET_LITTLE_NAME
5276#define TARGET_LITTLE_NAME "elf64-x86-64-sol2"
5277
5278/* Restore default: we cannot use ELFOSABI_SOLARIS, otherwise ELFOSABI_NONE
5279 objects won't be recognized. */
5280#undef ELF_OSABI
5281
5282#undef elf64_bed
5283#define elf64_bed elf64_x86_64_sol2_bed
5284
7dc98aea
RO		 5285/* The 64-bit static TLS arena size is rounded to the nearest 16-byte
5286 boundary. */
84865015 5287#undef elf_backend_static_tls_alignment
7dc98aea
RO		 5288#define elf_backend_static_tls_alignment 16
5289
a6cc6b3b
RO		 5290/* The Solaris 2 ABI requires a plt symbol on all platforms.
5291
5292 Cf. Linker and Libraries Guide, Ch. 2, Link-Editor, Generating the Output
5293 File, p.63. */
84865015 5294#undef elf_backend_want_plt_sym
a6cc6b3b
RO		 5295#define elf_backend_want_plt_sym 1
5296
84865015
NC		 5297#undef elf_backend_strtab_flags
5298#define elf_backend_strtab_flags SHF_STRINGS
5299
5300static bfd_boolean
5522f910
NC		 5301elf64_x86_64_copy_solaris_special_section_fields (const bfd *ibfd ATTRIBUTE_UNUSED,
5302 bfd *obfd ATTRIBUTE_UNUSED,
5303 const Elf_Internal_Shdr *isection ATTRIBUTE_UNUSED,
5304 Elf_Internal_Shdr *osection ATTRIBUTE_UNUSED)
84865015
NC		 5305{
5306 /* PR 19938: FIXME: Need to add code for setting the sh_info
5307 and sh_link fields of Solaris specific section types. */
5308 return FALSE;
5309}
5310
5522f910
NC		 5311#undef elf_backend_copy_special_section_fields
5312#define elf_backend_copy_special_section_fields elf64_x86_64_copy_solaris_special_section_fields
84865015 5313
a6cc6b3b
RO		 5314#include "elf64-target.h"
5315
8059fb19
RM		 5316/* Native Client support. */
5317
64b384e1
RM		 5318static bfd_boolean
5319elf64_x86_64_nacl_elf_object_p (bfd *abfd)
5320{
5321 /* Set the right machine number for a NaCl x86-64 ELF64 file. */
5322 bfd_default_set_arch_mach (abfd, bfd_arch_i386, bfd_mach_x86_64_nacl);
5323 return TRUE;
5324}
5325
8059fb19 5326#undef TARGET_LITTLE_SYM
6d00b590 5327#define TARGET_LITTLE_SYM x86_64_elf64_nacl_vec
8059fb19
RM		 5328#undef TARGET_LITTLE_NAME
5329#define TARGET_LITTLE_NAME "elf64-x86-64-nacl"
5330#undef elf64_bed
5331#define elf64_bed elf64_x86_64_nacl_bed
5332
5333#undef ELF_MAXPAGESIZE
5334#undef ELF_MINPAGESIZE
5335#undef ELF_COMMONPAGESIZE
5336#define ELF_MAXPAGESIZE 0x10000
5337#define ELF_MINPAGESIZE 0x10000
5338#define ELF_COMMONPAGESIZE 0x10000
5339
5340/* Restore defaults. */
5341#undef ELF_OSABI
5342#undef elf_backend_static_tls_alignment
5343#undef elf_backend_want_plt_sym
5344#define elf_backend_want_plt_sym 0
84865015 5345#undef elf_backend_strtab_flags
5522f910 5346#undef elf_backend_copy_special_section_fields
8059fb19
RM		 5347
5348/* NaCl uses substantially different PLT entries for the same effects. */
5349
5350#undef elf_backend_plt_alignment
5351#define elf_backend_plt_alignment 5
5352#define NACL_PLT_ENTRY_SIZE 64
5353#define NACLMASK 0xe0 /* 32-byte alignment mask. */
5354
5355static const bfd_byte elf_x86_64_nacl_plt0_entry[NACL_PLT_ENTRY_SIZE] =
5356 {
5357 0xff, 0x35, 8, 0, 0, 0, /* pushq GOT+8(%rip) */
5358 0x4c, 0x8b, 0x1d, 16, 0, 0, 0, /* mov GOT+16(%rip), %r11 */
5359 0x41, 0x83, 0xe3, NACLMASK, /* and $-32, %r11d */
5360 0x4d, 0x01, 0xfb, /* add %r15, %r11 */
5361 0x41, 0xff, 0xe3, /* jmpq *%r11 */
5362
ea2d813e 5363 /* 9-byte nop sequence to pad out to the next 32-byte boundary. */
70cc877f 5364 0x66, 0x0f, 0x1f, 0x84, 0, 0, 0, 0, 0, /* nopw 0x0(%rax,%rax,1) */
ea2d813e
RM		 5365
5366 /* 32 bytes of nop to pad out to the standard size. */
3ddf1bdd 5367 0x66, 0x66, 0x66, 0x66, 0x66, 0x66, /* excess data16 prefixes */
8059fb19 5368 0x2e, 0x0f, 0x1f, 0x84, 0, 0, 0, 0, 0, /* nopw %cs:0x0(%rax,%rax,1) */
3ddf1bdd 5369 0x66, 0x66, 0x66, 0x66, 0x66, 0x66, /* excess data16 prefixes */
8059fb19 5370 0x2e, 0x0f, 0x1f, 0x84, 0, 0, 0, 0, 0, /* nopw %cs:0x0(%rax,%rax,1) */
3ddf1bdd 5371 0x66, /* excess data16 prefix */
ea2d813e 5372 0x90 /* nop */
8059fb19
RM		 5373 };
5374
5375static const bfd_byte elf_x86_64_nacl_plt_entry[NACL_PLT_ENTRY_SIZE] =
5376 {
5377 0x4c, 0x8b, 0x1d, 0, 0, 0, 0, /* mov name@GOTPCREL(%rip),%r11 */
5378 0x41, 0x83, 0xe3, NACLMASK, /* and $-32, %r11d */
5379 0x4d, 0x01, 0xfb, /* add %r15, %r11 */
5380 0x41, 0xff, 0xe3, /* jmpq *%r11 */
5381
5382 /* 15-byte nop sequence to pad out to the next 32-byte boundary. */
3ddf1bdd 5383 0x66, 0x66, 0x66, 0x66, 0x66, 0x66, /* excess data16 prefixes */
8059fb19
RM		 5384 0x2e, 0x0f, 0x1f, 0x84, 0, 0, 0, 0, 0, /* nopw %cs:0x0(%rax,%rax,1) */
5385
5386 /* Lazy GOT entries point here (32-byte aligned). */
5387 0x68, /* pushq immediate */
5388 0, 0, 0, 0, /* replaced with index into relocation table. */
5389 0xe9, /* jmp relative */
5390 0, 0, 0, 0, /* replaced with offset to start of .plt0. */
5391
5392 /* 22 bytes of nop to pad out to the standard size. */
3ddf1bdd 5393 0x66, 0x66, 0x66, 0x66, 0x66, 0x66, /* excess data16 prefixes */
8059fb19
RM		 5394 0x2e, 0x0f, 0x1f, 0x84, 0, 0, 0, 0, 0, /* nopw %cs:0x0(%rax,%rax,1) */
5395 0x0f, 0x1f, 0x80, 0, 0, 0, 0, /* nopl 0x0(%rax) */
5396 };
5397
5398/* .eh_frame covering the .plt section. */
5399
5400static const bfd_byte elf_x86_64_nacl_eh_frame_plt[] =
5401 {
5402#if (PLT_CIE_LENGTH != 20 \
5403 || PLT_FDE_LENGTH != 36 \
5404 || PLT_FDE_START_OFFSET != 4 + PLT_CIE_LENGTH + 8 \
5405 || PLT_FDE_LEN_OFFSET != 4 + PLT_CIE_LENGTH + 12)
5406# error "Need elf_x86_64_backend_data parameters for eh_frame_plt offsets!"
5407#endif
5408 PLT_CIE_LENGTH, 0, 0, 0, /* CIE length */
5409 0, 0, 0, 0, /* CIE ID */
5410 1, /* CIE version */
5411 'z', 'R', 0, /* Augmentation string */
5412 1, /* Code alignment factor */
5413 0x78, /* Data alignment factor */
5414 16, /* Return address column */
5415 1, /* Augmentation size */
5416 DW_EH_PE_pcrel | DW_EH_PE_sdata4, /* FDE encoding */
5417 DW_CFA_def_cfa, 7, 8, /* DW_CFA_def_cfa: r7 (rsp) ofs 8 */
5418 DW_CFA_offset + 16, 1, /* DW_CFA_offset: r16 (rip) at cfa-8 */
5419 DW_CFA_nop, DW_CFA_nop,
5420
5421 PLT_FDE_LENGTH, 0, 0, 0, /* FDE length */
5422 PLT_CIE_LENGTH + 8, 0, 0, 0,/* CIE pointer */
5423 0, 0, 0, 0, /* R_X86_64_PC32 .plt goes here */
5424 0, 0, 0, 0, /* .plt size goes here */
5425 0, /* Augmentation size */
5426 DW_CFA_def_cfa_offset, 16, /* DW_CFA_def_cfa_offset: 16 */
5427 DW_CFA_advance_loc + 6, /* DW_CFA_advance_loc: 6 to __PLT__+6 */
5428 DW_CFA_def_cfa_offset, 24, /* DW_CFA_def_cfa_offset: 24 */
5429 DW_CFA_advance_loc + 58, /* DW_CFA_advance_loc: 58 to __PLT__+64 */
5430 DW_CFA_def_cfa_expression, /* DW_CFA_def_cfa_expression */
5431 13, /* Block length */
5432 DW_OP_breg7, 8, /* DW_OP_breg7 (rsp): 8 */
5433 DW_OP_breg16, 0, /* DW_OP_breg16 (rip): 0 */
5434 DW_OP_const1u, 63, DW_OP_and, DW_OP_const1u, 37, DW_OP_ge,
5435 DW_OP_lit3, DW_OP_shl, DW_OP_plus,
5436 DW_CFA_nop, DW_CFA_nop
5437 };
5438
765e526c 5439static const struct elf_x86_lazy_plt_layout elf_x86_64_nacl_plt =
8059fb19
RM		 5440 {
5441 elf_x86_64_nacl_plt0_entry, /* plt0_entry */
765e526c 5442 NACL_PLT_ENTRY_SIZE, /* plt0_entry_size */
8059fb19
RM		 5443 elf_x86_64_nacl_plt_entry, /* plt_entry */
5444 NACL_PLT_ENTRY_SIZE, /* plt_entry_size */
5445 2, /* plt0_got1_offset */
5446 9, /* plt0_got2_offset */
5447 13, /* plt0_got2_insn_end */
5448 3, /* plt_got_offset */
5449 33, /* plt_reloc_offset */
5450 38, /* plt_plt_offset */
5451 7, /* plt_got_insn_size */
5452 42, /* plt_plt_insn_end */
5453 32, /* plt_lazy_offset */
a6798bab
L		 5454 elf_x86_64_nacl_plt0_entry, /* pic_plt0_entry */
5455 elf_x86_64_nacl_plt_entry, /* pic_plt_entry */
8059fb19 5456 elf_x86_64_nacl_eh_frame_plt, /* eh_frame_plt */
38b12349
L		 5457 sizeof (elf_x86_64_nacl_eh_frame_plt) /* eh_frame_plt_size */
5458 };
5459
5460static const struct elf_x86_64_backend_data elf_x86_64_nacl_arch_bed =
5461 {
5462 is_nacl /* os */
8059fb19
RM		 5463 };
5464
5465#undef elf_backend_arch_data
5466#define elf_backend_arch_data &elf_x86_64_nacl_arch_bed
5467
64b384e1
RM		 5468#undef elf_backend_object_p
5469#define elf_backend_object_p elf64_x86_64_nacl_elf_object_p
5a68afcf
RM		 5470#undef elf_backend_modify_segment_map
5471#define elf_backend_modify_segment_map nacl_modify_segment_map
5472#undef elf_backend_modify_program_headers
5473#define elf_backend_modify_program_headers nacl_modify_program_headers
887badb3
RM		 5474#undef elf_backend_final_write_processing
5475#define elf_backend_final_write_processing nacl_final_write_processing
5a68afcf 5476
8059fb19
RM		 5477#include "elf64-target.h"
5478
5479/* Native Client x32 support. */
5480
64b384e1
RM		 5481static bfd_boolean
5482elf32_x86_64_nacl_elf_object_p (bfd *abfd)
5483{
5484 /* Set the right machine number for a NaCl x86-64 ELF32 file. */
5485 bfd_default_set_arch_mach (abfd, bfd_arch_i386, bfd_mach_x64_32_nacl);
5486 return TRUE;
5487}
5488
8059fb19 5489#undef TARGET_LITTLE_SYM
6d00b590 5490#define TARGET_LITTLE_SYM x86_64_elf32_nacl_vec
8059fb19
RM		 5491#undef TARGET_LITTLE_NAME
5492#define TARGET_LITTLE_NAME "elf32-x86-64-nacl"
5493#undef elf32_bed
5494#define elf32_bed elf32_x86_64_nacl_bed
5495
8059fb19
RM		 5496#define bfd_elf32_bfd_reloc_type_lookup \
5497 elf_x86_64_reloc_type_lookup
5498#define bfd_elf32_bfd_reloc_name_lookup \
5499 elf_x86_64_reloc_name_lookup
b7365e5d
L		 5500#define bfd_elf32_get_synthetic_symtab \
5501 elf_x86_64_get_synthetic_symtab
8059fb19
RM		 5502
5503#undef elf_backend_object_p
5504#define elf_backend_object_p \
64b384e1 5505 elf32_x86_64_nacl_elf_object_p
8059fb19
RM		 5506
5507#undef elf_backend_bfd_from_remote_memory
5508#define elf_backend_bfd_from_remote_memory \
5509 _bfd_elf32_bfd_from_remote_memory
5510
5511#undef elf_backend_size_info
5512#define elf_backend_size_info \
5513 _bfd_elf32_size_info
5514
5515#include "elf32-target.h"
5516
5517/* Restore defaults. */
5a68afcf 5518#undef elf_backend_object_p
8059fb19 5519#define elf_backend_object_p elf64_x86_64_elf_object_p
5a68afcf
RM		 5520#undef elf_backend_bfd_from_remote_memory
5521#undef elf_backend_size_info
5522#undef elf_backend_modify_segment_map
5523#undef elf_backend_modify_program_headers
887badb3 5524#undef elf_backend_final_write_processing
8059fb19 5525
8a9036a4
L		 5526/* Intel L1OM support. */
5527
5528static bfd_boolean
5529elf64_l1om_elf_object_p (bfd *abfd)
5530{
5531 /* Set the right machine number for an L1OM elf64 file. */
5532 bfd_default_set_arch_mach (abfd, bfd_arch_l1om, bfd_mach_l1om);
5533 return TRUE;
5534}
5535
5536#undef TARGET_LITTLE_SYM
6d00b590 5537#define TARGET_LITTLE_SYM l1om_elf64_vec
8a9036a4
L		 5538#undef TARGET_LITTLE_NAME
5539#define TARGET_LITTLE_NAME "elf64-l1om"
5540#undef ELF_ARCH
5541#define ELF_ARCH bfd_arch_l1om
5542
5543#undef ELF_MACHINE_CODE
5544#define ELF_MACHINE_CODE EM_L1OM
5545
5546#undef ELF_OSABI
5547
5548#undef elf64_bed
5549#define elf64_bed elf64_l1om_bed
5550
5551#undef elf_backend_object_p
5552#define elf_backend_object_p elf64_l1om_elf_object_p
5553
8059fb19
RM		 5554/* Restore defaults. */
5555#undef ELF_MAXPAGESIZE
5556#undef ELF_MINPAGESIZE
5557#undef ELF_COMMONPAGESIZE
5558#define ELF_MAXPAGESIZE 0x200000
5559#define ELF_MINPAGESIZE 0x1000
5560#define ELF_COMMONPAGESIZE 0x1000
5561#undef elf_backend_plt_alignment
5562#define elf_backend_plt_alignment 4
5563#undef elf_backend_arch_data
5564#define elf_backend_arch_data &elf_x86_64_arch_bed
1a0c107f 5565
8a9036a4
L		 5566#include "elf64-target.h"
5567
5568/* FreeBSD L1OM support. */
5569
5570#undef TARGET_LITTLE_SYM
6d00b590 5571#define TARGET_LITTLE_SYM l1om_elf64_fbsd_vec
8a9036a4
L		 5572#undef TARGET_LITTLE_NAME
5573#define TARGET_LITTLE_NAME "elf64-l1om-freebsd"
5574
5575#undef ELF_OSABI
5576#define ELF_OSABI ELFOSABI_FREEBSD
5577
5578#undef elf64_bed
5579#define elf64_bed elf64_l1om_fbsd_bed
5580
8a9036a4 5581#include "elf64-target.h"
351f65ca 5582
7a9068fe
L		 5583/* Intel K1OM support. */
5584
5585static bfd_boolean
5586elf64_k1om_elf_object_p (bfd *abfd)
5587{
5588 /* Set the right machine number for an K1OM elf64 file. */
5589 bfd_default_set_arch_mach (abfd, bfd_arch_k1om, bfd_mach_k1om);
5590 return TRUE;
5591}
5592
5593#undef TARGET_LITTLE_SYM
6d00b590 5594#define TARGET_LITTLE_SYM k1om_elf64_vec
7a9068fe
L		 5595#undef TARGET_LITTLE_NAME
5596#define TARGET_LITTLE_NAME "elf64-k1om"
5597#undef ELF_ARCH
5598#define ELF_ARCH bfd_arch_k1om
5599
5600#undef ELF_MACHINE_CODE
5601#define ELF_MACHINE_CODE EM_K1OM
5602
5603#undef ELF_OSABI
5604
5605#undef elf64_bed
5606#define elf64_bed elf64_k1om_bed
5607
5608#undef elf_backend_object_p
5609#define elf_backend_object_p elf64_k1om_elf_object_p
5610
5611#undef elf_backend_static_tls_alignment
5612
5613#undef elf_backend_want_plt_sym
5614#define elf_backend_want_plt_sym 0
5615
5616#include "elf64-target.h"
5617
5618/* FreeBSD K1OM support. */
5619
5620#undef TARGET_LITTLE_SYM
6d00b590 5621#define TARGET_LITTLE_SYM k1om_elf64_fbsd_vec
7a9068fe
L		 5622#undef TARGET_LITTLE_NAME
5623#define TARGET_LITTLE_NAME "elf64-k1om-freebsd"
5624
5625#undef ELF_OSABI
5626#define ELF_OSABI ELFOSABI_FREEBSD
5627
5628#undef elf64_bed
5629#define elf64_bed elf64_k1om_fbsd_bed
5630
5631#include "elf64-target.h"
5632
351f65ca
L		 5633/* 32bit x86-64 support. */
5634
351f65ca 5635#undef TARGET_LITTLE_SYM
6d00b590 5636#define TARGET_LITTLE_SYM x86_64_elf32_vec
351f65ca
L		 5637#undef TARGET_LITTLE_NAME
5638#define TARGET_LITTLE_NAME "elf32-x86-64"
8059fb19 5639#undef elf32_bed
351f65ca
L		 5640
5641#undef ELF_ARCH
5642#define ELF_ARCH bfd_arch_i386
5643
5644#undef ELF_MACHINE_CODE
5645#define ELF_MACHINE_CODE EM_X86_64
5646
351f65ca
L		 5647#undef ELF_OSABI
5648
351f65ca
L		 5649#undef elf_backend_object_p
5650#define elf_backend_object_p \
5651 elf32_x86_64_elf_object_p
5652
5653#undef elf_backend_bfd_from_remote_memory
5654#define elf_backend_bfd_from_remote_memory \
5655 _bfd_elf32_bfd_from_remote_memory
5656
5657#undef elf_backend_size_info
5658#define elf_backend_size_info \
5659 _bfd_elf32_size_info
5660
5661#include "elf32-target.h"
GDB Binutils - Deliverables
This page took 1.710389 seconds and 4 git commands to generate.