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[deliverable/binutils-gdb.git] / bfd / elf64-x86-64.c
CommitLineData
351f65ca 1/* X86-64 specific support for ELF
b90efa5b 2 Copyright (C) 2000-2015 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
8d88c4ca 22#include "sysdep.h"
3db64b00 23#include "bfd.h"
c434dee6 24#include "bfdlink.h"
8d88c4ca
NC
25#include "libbfd.h"
26#include "elf-bfd.h"
5a68afcf 27#include "elf-nacl.h"
142411ca 28#include "bfd_stdint.h"
c25bc9fc
L
29#include "objalloc.h"
30#include "hashtab.h"
e41b3a13 31#include "dwarf2.h"
d7921315 32#include "libiberty.h"
8d88c4ca
NC
33
34#include "elf/x86-64.h"
35
8fd79e71
L
36#ifdef CORE_HEADER
37#include <stdarg.h>
38#include CORE_HEADER
39#endif
40
8d88c4ca
NC
41/* In case we're on a 32-bit machine, construct a 64-bit "-1" value. */
42#define MINUS_ONE (~ (bfd_vma) 0)
43
351f65ca
L
44/* Since both 32-bit and 64-bit x86-64 encode relocation type in the
45 identical manner, we use ELF32_R_TYPE instead of ELF64_R_TYPE to get
46 relocation type. We also use ELF_ST_TYPE instead of ELF64_ST_TYPE
47 since they are the same. */
48
49#define ABI_64_P(abfd) \
50 (get_elf_backend_data (abfd)->s->elfclass == ELFCLASS64)
51
8d88c4ca 52/* The relocation "howto" table. Order of fields:
7b81dfbb
AJ
53 type, rightshift, size, bitsize, pc_relative, bitpos, complain_on_overflow,
54 special_function, name, partial_inplace, src_mask, dst_mask, pcrel_offset. */
70256ad8
AJ
55static reloc_howto_type x86_64_elf_howto_table[] =
56{
6346d5ca 57 HOWTO(R_X86_64_NONE, 0, 3, 0, FALSE, 0, complain_overflow_dont,
b34976b6
AM
58 bfd_elf_generic_reloc, "R_X86_64_NONE", FALSE, 0x00000000, 0x00000000,
59 FALSE),
60 HOWTO(R_X86_64_64, 0, 4, 64, FALSE, 0, complain_overflow_bitfield,
61 bfd_elf_generic_reloc, "R_X86_64_64", FALSE, MINUS_ONE, MINUS_ONE,
62 FALSE),
63 HOWTO(R_X86_64_PC32, 0, 2, 32, TRUE, 0, complain_overflow_signed,
64 bfd_elf_generic_reloc, "R_X86_64_PC32", FALSE, 0xffffffff, 0xffffffff,
65 TRUE),
66 HOWTO(R_X86_64_GOT32, 0, 2, 32, FALSE, 0, complain_overflow_signed,
67 bfd_elf_generic_reloc, "R_X86_64_GOT32", FALSE, 0xffffffff, 0xffffffff,
68 FALSE),
69 HOWTO(R_X86_64_PLT32, 0, 2, 32, TRUE, 0, complain_overflow_signed,
70 bfd_elf_generic_reloc, "R_X86_64_PLT32", FALSE, 0xffffffff, 0xffffffff,
71 TRUE),
72 HOWTO(R_X86_64_COPY, 0, 2, 32, FALSE, 0, complain_overflow_bitfield,
73 bfd_elf_generic_reloc, "R_X86_64_COPY", FALSE, 0xffffffff, 0xffffffff,
74 FALSE),
75 HOWTO(R_X86_64_GLOB_DAT, 0, 4, 64, FALSE, 0, complain_overflow_bitfield,
76 bfd_elf_generic_reloc, "R_X86_64_GLOB_DAT", FALSE, MINUS_ONE,
77 MINUS_ONE, FALSE),
78 HOWTO(R_X86_64_JUMP_SLOT, 0, 4, 64, FALSE, 0, complain_overflow_bitfield,
79 bfd_elf_generic_reloc, "R_X86_64_JUMP_SLOT", FALSE, MINUS_ONE,
80 MINUS_ONE, FALSE),
81 HOWTO(R_X86_64_RELATIVE, 0, 4, 64, FALSE, 0, complain_overflow_bitfield,
82 bfd_elf_generic_reloc, "R_X86_64_RELATIVE", FALSE, MINUS_ONE,
83 MINUS_ONE, FALSE),
84 HOWTO(R_X86_64_GOTPCREL, 0, 2, 32, TRUE, 0, complain_overflow_signed,
85 bfd_elf_generic_reloc, "R_X86_64_GOTPCREL", FALSE, 0xffffffff,
86 0xffffffff, TRUE),
87 HOWTO(R_X86_64_32, 0, 2, 32, FALSE, 0, complain_overflow_unsigned,
88 bfd_elf_generic_reloc, "R_X86_64_32", FALSE, 0xffffffff, 0xffffffff,
89 FALSE),
90 HOWTO(R_X86_64_32S, 0, 2, 32, FALSE, 0, complain_overflow_signed,
91 bfd_elf_generic_reloc, "R_X86_64_32S", FALSE, 0xffffffff, 0xffffffff,
92 FALSE),
93 HOWTO(R_X86_64_16, 0, 1, 16, FALSE, 0, complain_overflow_bitfield,
94 bfd_elf_generic_reloc, "R_X86_64_16", FALSE, 0xffff, 0xffff, FALSE),
b0360d8c 95 HOWTO(R_X86_64_PC16,0, 1, 16, TRUE, 0, complain_overflow_bitfield,
b34976b6 96 bfd_elf_generic_reloc, "R_X86_64_PC16", FALSE, 0xffff, 0xffff, TRUE),
ac2aa337 97 HOWTO(R_X86_64_8, 0, 0, 8, FALSE, 0, complain_overflow_bitfield,
b34976b6
AM
98 bfd_elf_generic_reloc, "R_X86_64_8", FALSE, 0xff, 0xff, FALSE),
99 HOWTO(R_X86_64_PC8, 0, 0, 8, TRUE, 0, complain_overflow_signed,
100 bfd_elf_generic_reloc, "R_X86_64_PC8", FALSE, 0xff, 0xff, TRUE),
101 HOWTO(R_X86_64_DTPMOD64, 0, 4, 64, FALSE, 0, complain_overflow_bitfield,
102 bfd_elf_generic_reloc, "R_X86_64_DTPMOD64", FALSE, MINUS_ONE,
103 MINUS_ONE, FALSE),
104 HOWTO(R_X86_64_DTPOFF64, 0, 4, 64, FALSE, 0, complain_overflow_bitfield,
105 bfd_elf_generic_reloc, "R_X86_64_DTPOFF64", FALSE, MINUS_ONE,
106 MINUS_ONE, FALSE),
107 HOWTO(R_X86_64_TPOFF64, 0, 4, 64, FALSE, 0, complain_overflow_bitfield,
108 bfd_elf_generic_reloc, "R_X86_64_TPOFF64", FALSE, MINUS_ONE,
109 MINUS_ONE, FALSE),
110 HOWTO(R_X86_64_TLSGD, 0, 2, 32, TRUE, 0, complain_overflow_signed,
111 bfd_elf_generic_reloc, "R_X86_64_TLSGD", FALSE, 0xffffffff,
112 0xffffffff, TRUE),
113 HOWTO(R_X86_64_TLSLD, 0, 2, 32, TRUE, 0, complain_overflow_signed,
114 bfd_elf_generic_reloc, "R_X86_64_TLSLD", FALSE, 0xffffffff,
115 0xffffffff, TRUE),
ac2aa337 116 HOWTO(R_X86_64_DTPOFF32, 0, 2, 32, FALSE, 0, complain_overflow_signed,
b34976b6
AM
117 bfd_elf_generic_reloc, "R_X86_64_DTPOFF32", FALSE, 0xffffffff,
118 0xffffffff, FALSE),
119 HOWTO(R_X86_64_GOTTPOFF, 0, 2, 32, TRUE, 0, complain_overflow_signed,
120 bfd_elf_generic_reloc, "R_X86_64_GOTTPOFF", FALSE, 0xffffffff,
121 0xffffffff, TRUE),
122 HOWTO(R_X86_64_TPOFF32, 0, 2, 32, FALSE, 0, complain_overflow_signed,
123 bfd_elf_generic_reloc, "R_X86_64_TPOFF32", FALSE, 0xffffffff,
124 0xffffffff, FALSE),
d6ab8113
JB
125 HOWTO(R_X86_64_PC64, 0, 4, 64, TRUE, 0, complain_overflow_bitfield,
126 bfd_elf_generic_reloc, "R_X86_64_PC64", FALSE, MINUS_ONE, MINUS_ONE,
127 TRUE),
128 HOWTO(R_X86_64_GOTOFF64, 0, 4, 64, FALSE, 0, complain_overflow_bitfield,
129 bfd_elf_generic_reloc, "R_X86_64_GOTOFF64",
130 FALSE, MINUS_ONE, MINUS_ONE, FALSE),
131 HOWTO(R_X86_64_GOTPC32, 0, 2, 32, TRUE, 0, complain_overflow_signed,
132 bfd_elf_generic_reloc, "R_X86_64_GOTPC32",
133 FALSE, 0xffffffff, 0xffffffff, TRUE),
7b81dfbb
AJ
134 HOWTO(R_X86_64_GOT64, 0, 4, 64, FALSE, 0, complain_overflow_signed,
135 bfd_elf_generic_reloc, "R_X86_64_GOT64", FALSE, MINUS_ONE, MINUS_ONE,
136 FALSE),
137 HOWTO(R_X86_64_GOTPCREL64, 0, 4, 64, TRUE, 0, complain_overflow_signed,
138 bfd_elf_generic_reloc, "R_X86_64_GOTPCREL64", FALSE, MINUS_ONE,
139 MINUS_ONE, TRUE),
140 HOWTO(R_X86_64_GOTPC64, 0, 4, 64, TRUE, 0, complain_overflow_signed,
141 bfd_elf_generic_reloc, "R_X86_64_GOTPC64",
142 FALSE, MINUS_ONE, MINUS_ONE, TRUE),
143 HOWTO(R_X86_64_GOTPLT64, 0, 4, 64, FALSE, 0, complain_overflow_signed,
144 bfd_elf_generic_reloc, "R_X86_64_GOTPLT64", FALSE, MINUS_ONE,
145 MINUS_ONE, FALSE),
146 HOWTO(R_X86_64_PLTOFF64, 0, 4, 64, FALSE, 0, complain_overflow_signed,
147 bfd_elf_generic_reloc, "R_X86_64_PLTOFF64", FALSE, MINUS_ONE,
148 MINUS_ONE, FALSE),
1788fc08
L
149 HOWTO(R_X86_64_SIZE32, 0, 2, 32, FALSE, 0, complain_overflow_unsigned,
150 bfd_elf_generic_reloc, "R_X86_64_SIZE32", FALSE, 0xffffffff, 0xffffffff,
151 FALSE),
152 HOWTO(R_X86_64_SIZE64, 0, 4, 64, FALSE, 0, complain_overflow_unsigned,
153 bfd_elf_generic_reloc, "R_X86_64_SIZE64", FALSE, MINUS_ONE, MINUS_ONE,
154 FALSE),
67a4f2b7
AO
155 HOWTO(R_X86_64_GOTPC32_TLSDESC, 0, 2, 32, TRUE, 0,
156 complain_overflow_bitfield, bfd_elf_generic_reloc,
157 "R_X86_64_GOTPC32_TLSDESC",
158 FALSE, 0xffffffff, 0xffffffff, TRUE),
159 HOWTO(R_X86_64_TLSDESC_CALL, 0, 0, 0, FALSE, 0,
160 complain_overflow_dont, bfd_elf_generic_reloc,
161 "R_X86_64_TLSDESC_CALL",
162 FALSE, 0, 0, FALSE),
163 HOWTO(R_X86_64_TLSDESC, 0, 4, 64, FALSE, 0,
164 complain_overflow_bitfield, bfd_elf_generic_reloc,
165 "R_X86_64_TLSDESC",
166 FALSE, MINUS_ONE, MINUS_ONE, FALSE),
cbe950e9
L
167 HOWTO(R_X86_64_IRELATIVE, 0, 4, 64, FALSE, 0, complain_overflow_bitfield,
168 bfd_elf_generic_reloc, "R_X86_64_IRELATIVE", FALSE, MINUS_ONE,
169 MINUS_ONE, FALSE),
64d25c44
L
170 HOWTO(R_X86_64_RELATIVE64, 0, 4, 64, FALSE, 0, complain_overflow_bitfield,
171 bfd_elf_generic_reloc, "R_X86_64_RELATIVE64", FALSE, MINUS_ONE,
172 MINUS_ONE, FALSE),
c3320543
L
173 HOWTO(R_X86_64_PC32_BND, 0, 2, 32, TRUE, 0, complain_overflow_signed,
174 bfd_elf_generic_reloc, "R_X86_64_PC32_BND", FALSE, 0xffffffff, 0xffffffff,
175 TRUE),
176 HOWTO(R_X86_64_PLT32_BND, 0, 2, 32, TRUE, 0, complain_overflow_signed,
177 bfd_elf_generic_reloc, "R_X86_64_PLT32_BND", FALSE, 0xffffffff, 0xffffffff,
178 TRUE),
fe4770f4 179
a33d77bc
JB
180 /* We have a gap in the reloc numbers here.
181 R_X86_64_standard counts the number up to this point, and
182 R_X86_64_vt_offset is the value to subtract from a reloc type of
183 R_X86_64_GNU_VT* to form an index into this table. */
c3320543 184#define R_X86_64_standard (R_X86_64_PLT32_BND + 1)
a33d77bc
JB
185#define R_X86_64_vt_offset (R_X86_64_GNU_VTINHERIT - R_X86_64_standard)
186
fe4770f4 187/* GNU extension to record C++ vtable hierarchy. */
b34976b6
AM
188 HOWTO (R_X86_64_GNU_VTINHERIT, 0, 4, 0, FALSE, 0, complain_overflow_dont,
189 NULL, "R_X86_64_GNU_VTINHERIT", FALSE, 0, 0, FALSE),
fe4770f4
AJ
190
191/* GNU extension to record C++ vtable member usage. */
b34976b6
AM
192 HOWTO (R_X86_64_GNU_VTENTRY, 0, 4, 0, FALSE, 0, complain_overflow_dont,
193 _bfd_elf_rel_vtable_reloc_fn, "R_X86_64_GNU_VTENTRY", FALSE, 0, 0,
d7921315
L
194 FALSE),
195
196/* Use complain_overflow_bitfield on R_X86_64_32 for x32. */
197 HOWTO(R_X86_64_32, 0, 2, 32, FALSE, 0, complain_overflow_bitfield,
198 bfd_elf_generic_reloc, "R_X86_64_32", FALSE, 0xffffffff, 0xffffffff,
199 FALSE)
8d88c4ca
NC
200};
201
d8045f23
NC
202#define IS_X86_64_PCREL_TYPE(TYPE) \
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, },
c3320543
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,},
fe4770f4
AJ
258 { BFD_RELOC_VTABLE_INHERIT, R_X86_64_GNU_VTINHERIT, },
259 { BFD_RELOC_VTABLE_ENTRY, R_X86_64_GNU_VTENTRY, },
8d88c4ca
NC
260};
261
67a4f2b7 262static reloc_howto_type *
351f65ca 263elf_x86_64_rtype_to_howto (bfd *abfd, unsigned r_type)
67a4f2b7
AO
264{
265 unsigned i;
266
d7921315
L
267 if (r_type == (unsigned int) R_X86_64_32)
268 {
269 if (ABI_64_P (abfd))
270 i = r_type;
271 else
272 i = ARRAY_SIZE (x86_64_elf_howto_table) - 1;
273 }
274 else if (r_type < (unsigned int) R_X86_64_GNU_VTINHERIT
275 || r_type >= (unsigned int) R_X86_64_max)
67a4f2b7
AO
276 {
277 if (r_type >= (unsigned int) R_X86_64_standard)
278 {
279 (*_bfd_error_handler) (_("%B: invalid relocation type %d"),
280 abfd, (int) r_type);
281 r_type = R_X86_64_NONE;
282 }
283 i = r_type;
284 }
285 else
286 i = r_type - (unsigned int) R_X86_64_vt_offset;
287 BFD_ASSERT (x86_64_elf_howto_table[i].type == r_type);
288 return &x86_64_elf_howto_table[i];
289}
8d88c4ca
NC
290
291/* Given a BFD reloc type, return a HOWTO structure. */
292static reloc_howto_type *
351f65ca
L
293elf_x86_64_reloc_type_lookup (bfd *abfd,
294 bfd_reloc_code_real_type code)
8d88c4ca
NC
295{
296 unsigned int i;
27482721 297
8d88c4ca
NC
298 for (i = 0; i < sizeof (x86_64_reloc_map) / sizeof (struct elf_reloc_map);
299 i++)
300 {
301 if (x86_64_reloc_map[i].bfd_reloc_val == code)
351f65ca
L
302 return elf_x86_64_rtype_to_howto (abfd,
303 x86_64_reloc_map[i].elf_reloc_val);
8d88c4ca 304 }
5860e3f8 305 return NULL;
8d88c4ca
NC
306}
307
157090f7 308static reloc_howto_type *
d7921315 309elf_x86_64_reloc_name_lookup (bfd *abfd,
351f65ca 310 const char *r_name)
157090f7
AM
311{
312 unsigned int i;
313
d7921315
L
314 if (!ABI_64_P (abfd) && strcasecmp (r_name, "R_X86_64_32") == 0)
315 {
316 /* Get x32 R_X86_64_32. */
317 reloc_howto_type *reloc
318 = &x86_64_elf_howto_table[ARRAY_SIZE (x86_64_elf_howto_table) - 1];
319 BFD_ASSERT (reloc->type == (unsigned int) R_X86_64_32);
320 return reloc;
321 }
322
323 for (i = 0; i < ARRAY_SIZE (x86_64_elf_howto_table); i++)
157090f7
AM
324 if (x86_64_elf_howto_table[i].name != NULL
325 && strcasecmp (x86_64_elf_howto_table[i].name, r_name) == 0)
326 return &x86_64_elf_howto_table[i];
327
328 return NULL;
329}
330
8d88c4ca 331/* Given an x86_64 ELF reloc type, fill in an arelent structure. */
8da6118f 332
8d88c4ca 333static void
351f65ca
L
334elf_x86_64_info_to_howto (bfd *abfd ATTRIBUTE_UNUSED, arelent *cache_ptr,
335 Elf_Internal_Rela *dst)
8d88c4ca 336{
67a4f2b7 337 unsigned r_type;
8d88c4ca 338
351f65ca
L
339 r_type = ELF32_R_TYPE (dst->r_info);
340 cache_ptr->howto = elf_x86_64_rtype_to_howto (abfd, r_type);
8d88c4ca
NC
341 BFD_ASSERT (r_type == cache_ptr->howto->type);
342}
70256ad8 343\f
3bab7989 344/* Support for core dump NOTE sections. */
b34976b6 345static bfd_boolean
351f65ca 346elf_x86_64_grok_prstatus (bfd *abfd, Elf_Internal_Note *note)
3bab7989
ML
347{
348 int offset;
eea6121a 349 size_t size;
3bab7989
ML
350
351 switch (note->descsz)
352 {
353 default:
b34976b6 354 return FALSE;
3bab7989 355
bcd823f1
L
356 case 296: /* sizeof(istruct elf_prstatus) on Linux/x32 */
357 /* pr_cursig */
228e534f 358 elf_tdata (abfd)->core->signal = bfd_get_16 (abfd, note->descdata + 12);
bcd823f1
L
359
360 /* pr_pid */
228e534f 361 elf_tdata (abfd)->core->lwpid = bfd_get_32 (abfd, note->descdata + 24);
bcd823f1
L
362
363 /* pr_reg */
364 offset = 72;
365 size = 216;
366
367 break;
368
3bab7989
ML
369 case 336: /* sizeof(istruct elf_prstatus) on Linux/x86_64 */
370 /* pr_cursig */
228e534f 371 elf_tdata (abfd)->core->signal
3bab7989
ML
372 = bfd_get_16 (abfd, note->descdata + 12);
373
374 /* pr_pid */
228e534f 375 elf_tdata (abfd)->core->lwpid
3bab7989
ML
376 = bfd_get_32 (abfd, note->descdata + 32);
377
378 /* pr_reg */
379 offset = 112;
eea6121a 380 size = 216;
3bab7989
ML
381
382 break;
383 }
384
385 /* Make a ".reg/999" section. */
386 return _bfd_elfcore_make_pseudosection (abfd, ".reg",
eea6121a 387 size, note->descpos + offset);
3bab7989
ML
388}
389
b34976b6 390static bfd_boolean
351f65ca 391elf_x86_64_grok_psinfo (bfd *abfd, Elf_Internal_Note *note)
3bab7989
ML
392{
393 switch (note->descsz)
394 {
395 default:
b34976b6 396 return FALSE;
3bab7989 397
bcd823f1 398 case 124: /* sizeof(struct elf_prpsinfo) on Linux/x32 */
228e534f 399 elf_tdata (abfd)->core->pid
bcd823f1 400 = bfd_get_32 (abfd, note->descdata + 12);
228e534f 401 elf_tdata (abfd)->core->program
bcd823f1 402 = _bfd_elfcore_strndup (abfd, note->descdata + 28, 16);
228e534f 403 elf_tdata (abfd)->core->command
bcd823f1
L
404 = _bfd_elfcore_strndup (abfd, note->descdata + 44, 80);
405 break;
406
3bab7989 407 case 136: /* sizeof(struct elf_prpsinfo) on Linux/x86_64 */
228e534f 408 elf_tdata (abfd)->core->pid
261b8d08 409 = bfd_get_32 (abfd, note->descdata + 24);
228e534f 410 elf_tdata (abfd)->core->program
3bab7989 411 = _bfd_elfcore_strndup (abfd, note->descdata + 40, 16);
228e534f 412 elf_tdata (abfd)->core->command
3bab7989
ML
413 = _bfd_elfcore_strndup (abfd, note->descdata + 56, 80);
414 }
415
416 /* Note that for some reason, a spurious space is tacked
417 onto the end of the args in some (at least one anyway)
418 implementations, so strip it off if it exists. */
419
420 {
228e534f 421 char *command = elf_tdata (abfd)->core->command;
3bab7989
ML
422 int n = strlen (command);
423
424 if (0 < n && command[n - 1] == ' ')
425 command[n - 1] = '\0';
426 }
427
b34976b6 428 return TRUE;
3bab7989 429}
8fd79e71
L
430
431#ifdef CORE_HEADER
432static char *
433elf_x86_64_write_core_note (bfd *abfd, char *buf, int *bufsiz,
434 int note_type, ...)
435{
436 const struct elf_backend_data *bed = get_elf_backend_data (abfd);
8fd79e71
L
437 va_list ap;
438 const char *fname, *psargs;
439 long pid;
440 int cursig;
441 const void *gregs;
442
443 switch (note_type)
444 {
445 default:
446 return NULL;
447
448 case NT_PRPSINFO:
449 va_start (ap, note_type);
450 fname = va_arg (ap, const char *);
451 psargs = va_arg (ap, const char *);
452 va_end (ap);
453
454 if (bed->s->elfclass == ELFCLASS32)
455 {
456 prpsinfo32_t data;
457 memset (&data, 0, sizeof (data));
458 strncpy (data.pr_fname, fname, sizeof (data.pr_fname));
459 strncpy (data.pr_psargs, psargs, sizeof (data.pr_psargs));
e85c6a70
JK
460 return elfcore_write_note (abfd, buf, bufsiz, "CORE", note_type,
461 &data, sizeof (data));
8fd79e71
L
462 }
463 else
464 {
b1bd052d 465 prpsinfo64_t data;
8fd79e71
L
466 memset (&data, 0, sizeof (data));
467 strncpy (data.pr_fname, fname, sizeof (data.pr_fname));
468 strncpy (data.pr_psargs, psargs, sizeof (data.pr_psargs));
e85c6a70
JK
469 return elfcore_write_note (abfd, buf, bufsiz, "CORE", note_type,
470 &data, sizeof (data));
8fd79e71 471 }
e85c6a70 472 /* NOTREACHED */
8fd79e71
L
473
474 case NT_PRSTATUS:
475 va_start (ap, note_type);
476 pid = va_arg (ap, long);
477 cursig = va_arg (ap, int);
478 gregs = va_arg (ap, const void *);
479 va_end (ap);
480
481 if (bed->s->elfclass == ELFCLASS32)
482 {
483 if (bed->elf_machine_code == EM_X86_64)
484 {
485 prstatusx32_t prstat;
486 memset (&prstat, 0, sizeof (prstat));
487 prstat.pr_pid = pid;
488 prstat.pr_cursig = cursig;
489 memcpy (&prstat.pr_reg, gregs, sizeof (prstat.pr_reg));
e85c6a70
JK
490 return elfcore_write_note (abfd, buf, bufsiz, "CORE", note_type,
491 &prstat, sizeof (prstat));
8fd79e71
L
492 }
493 else
494 {
495 prstatus32_t prstat;
496 memset (&prstat, 0, sizeof (prstat));
497 prstat.pr_pid = pid;
498 prstat.pr_cursig = cursig;
499 memcpy (&prstat.pr_reg, gregs, sizeof (prstat.pr_reg));
e85c6a70
JK
500 return elfcore_write_note (abfd, buf, bufsiz, "CORE", note_type,
501 &prstat, sizeof (prstat));
8fd79e71
L
502 }
503 }
504 else
505 {
b1bd052d 506 prstatus64_t prstat;
8fd79e71
L
507 memset (&prstat, 0, sizeof (prstat));
508 prstat.pr_pid = pid;
509 prstat.pr_cursig = cursig;
510 memcpy (&prstat.pr_reg, gregs, sizeof (prstat.pr_reg));
e85c6a70
JK
511 return elfcore_write_note (abfd, buf, bufsiz, "CORE", note_type,
512 &prstat, sizeof (prstat));
8fd79e71 513 }
8fd79e71 514 }
e85c6a70 515 /* NOTREACHED */
8fd79e71
L
516}
517#endif
3bab7989 518\f
407443a3 519/* Functions for the x86-64 ELF linker. */
70256ad8 520
407443a3 521/* The name of the dynamic interpreter. This is put in the .interp
70256ad8
AJ
522 section. */
523
351f65ca 524#define ELF64_DYNAMIC_INTERPRETER "/lib/ld64.so.1"
eec9dd95 525#define ELF32_DYNAMIC_INTERPRETER "/lib/ldx32.so.1"
70256ad8 526
d40d037c
AJ
527/* If ELIMINATE_COPY_RELOCS is non-zero, the linker will try to avoid
528 copying dynamic variables from a shared lib into an app's dynbss
529 section, and instead use a dynamic relocation to point into the
530 shared lib. */
531#define ELIMINATE_COPY_RELOCS 1
532
70256ad8
AJ
533/* The size in bytes of an entry in the global offset table. */
534
535#define GOT_ENTRY_SIZE 8
8d88c4ca 536
70256ad8 537/* The size in bytes of an entry in the procedure linkage table. */
8d88c4ca 538
70256ad8
AJ
539#define PLT_ENTRY_SIZE 16
540
541/* The first entry in a procedure linkage table looks like this. See the
542 SVR4 ABI i386 supplement and the x86-64 ABI to see how this works. */
543
351f65ca 544static const bfd_byte elf_x86_64_plt0_entry[PLT_ENTRY_SIZE] =
70256ad8 545{
653165cc
AJ
546 0xff, 0x35, 8, 0, 0, 0, /* pushq GOT+8(%rip) */
547 0xff, 0x25, 16, 0, 0, 0, /* jmpq *GOT+16(%rip) */
10efb593 548 0x0f, 0x1f, 0x40, 0x00 /* nopl 0(%rax) */
70256ad8
AJ
549};
550
551/* Subsequent entries in a procedure linkage table look like this. */
552
351f65ca 553static const bfd_byte elf_x86_64_plt_entry[PLT_ENTRY_SIZE] =
70256ad8 554{
653165cc 555 0xff, 0x25, /* jmpq *name@GOTPC(%rip) */
407443a3 556 0, 0, 0, 0, /* replaced with offset to this symbol in .got. */
653165cc 557 0x68, /* pushq immediate */
70256ad8
AJ
558 0, 0, 0, 0, /* replaced with index into relocation table. */
559 0xe9, /* jmp relative */
560 0, 0, 0, 0 /* replaced with offset to start of .plt0. */
561};
562
0ff2b86e
L
563/* The first entry in a procedure linkage table with BND relocations
564 like this. */
565
566static const bfd_byte elf_x86_64_bnd_plt0_entry[PLT_ENTRY_SIZE] =
567{
568 0xff, 0x35, 8, 0, 0, 0, /* pushq GOT+8(%rip) */
569 0xf2, 0xff, 0x25, 16, 0, 0, 0, /* bnd jmpq *GOT+16(%rip) */
570 0x0f, 0x1f, 0 /* nopl (%rax) */
571};
572
573/* Subsequent entries for legacy branches in a procedure linkage table
574 with BND relocations look like this. */
575
576static const bfd_byte elf_x86_64_legacy_plt_entry[PLT_ENTRY_SIZE] =
577{
578 0x68, 0, 0, 0, 0, /* pushq immediate */
579 0xe9, 0, 0, 0, 0, /* jmpq relative */
580 0x66, 0x0f, 0x1f, 0x44, 0, 0 /* nopw (%rax,%rax,1) */
581};
582
583/* Subsequent entries for branches with BND prefx in a procedure linkage
584 table with BND relocations look like this. */
585
586static const bfd_byte elf_x86_64_bnd_plt_entry[PLT_ENTRY_SIZE] =
587{
588 0x68, 0, 0, 0, 0, /* pushq immediate */
589 0xf2, 0xe9, 0, 0, 0, 0, /* bnd jmpq relative */
590 0x0f, 0x1f, 0x44, 0, 0 /* nopl 0(%rax,%rax,1) */
591};
592
593/* Entries for legacy branches in the second procedure linkage table
594 look like this. */
595
596static const bfd_byte elf_x86_64_legacy_plt2_entry[8] =
597{
598 0xff, 0x25, /* jmpq *name@GOTPC(%rip) */
599 0, 0, 0, 0, /* replaced with offset to this symbol in .got. */
600 0x66, 0x90 /* xchg %ax,%ax */
601};
602
603/* Entries for branches with BND prefix in the second procedure linkage
604 table look like this. */
605
606static const bfd_byte elf_x86_64_bnd_plt2_entry[8] =
607{
608 0xf2, 0xff, 0x25, /* bnd jmpq *name@GOTPC(%rip) */
609 0, 0, 0, 0, /* replaced with offset to this symbol in .got. */
610 0x90 /* nop */
611};
612
e41b3a13
JJ
613/* .eh_frame covering the .plt section. */
614
615static const bfd_byte elf_x86_64_eh_frame_plt[] =
616{
617#define PLT_CIE_LENGTH 20
618#define PLT_FDE_LENGTH 36
619#define PLT_FDE_START_OFFSET 4 + PLT_CIE_LENGTH + 8
620#define PLT_FDE_LEN_OFFSET 4 + PLT_CIE_LENGTH + 12
621 PLT_CIE_LENGTH, 0, 0, 0, /* CIE length */
622 0, 0, 0, 0, /* CIE ID */
623 1, /* CIE version */
624 'z', 'R', 0, /* Augmentation string */
625 1, /* Code alignment factor */
626 0x78, /* Data alignment factor */
627 16, /* Return address column */
628 1, /* Augmentation size */
629 DW_EH_PE_pcrel | DW_EH_PE_sdata4, /* FDE encoding */
630 DW_CFA_def_cfa, 7, 8, /* DW_CFA_def_cfa: r7 (rsp) ofs 8 */
631 DW_CFA_offset + 16, 1, /* DW_CFA_offset: r16 (rip) at cfa-8 */
632 DW_CFA_nop, DW_CFA_nop,
633
634 PLT_FDE_LENGTH, 0, 0, 0, /* FDE length */
635 PLT_CIE_LENGTH + 8, 0, 0, 0, /* CIE pointer */
636 0, 0, 0, 0, /* R_X86_64_PC32 .plt goes here */
637 0, 0, 0, 0, /* .plt size goes here */
638 0, /* Augmentation size */
639 DW_CFA_def_cfa_offset, 16, /* DW_CFA_def_cfa_offset: 16 */
640 DW_CFA_advance_loc + 6, /* DW_CFA_advance_loc: 6 to __PLT__+6 */
641 DW_CFA_def_cfa_offset, 24, /* DW_CFA_def_cfa_offset: 24 */
642 DW_CFA_advance_loc + 10, /* DW_CFA_advance_loc: 10 to __PLT__+16 */
643 DW_CFA_def_cfa_expression, /* DW_CFA_def_cfa_expression */
644 11, /* Block length */
645 DW_OP_breg7, 8, /* DW_OP_breg7 (rsp): 8 */
646 DW_OP_breg16, 0, /* DW_OP_breg16 (rip): 0 */
647 DW_OP_lit15, DW_OP_and, DW_OP_lit11, DW_OP_ge,
648 DW_OP_lit3, DW_OP_shl, DW_OP_plus,
649 DW_CFA_nop, DW_CFA_nop, DW_CFA_nop, DW_CFA_nop
650};
651
eed180f8
RM
652/* Architecture-specific backend data for x86-64. */
653
654struct elf_x86_64_backend_data
655{
656 /* Templates for the initial PLT entry and for subsequent entries. */
657 const bfd_byte *plt0_entry;
658 const bfd_byte *plt_entry;
659 unsigned int plt_entry_size; /* Size of each PLT entry. */
660
661 /* Offsets into plt0_entry that are to be replaced with GOT[1] and GOT[2]. */
662 unsigned int plt0_got1_offset;
663 unsigned int plt0_got2_offset;
664
665 /* Offset of the end of the PC-relative instruction containing
666 plt0_got2_offset. */
667 unsigned int plt0_got2_insn_end;
668
669 /* Offsets into plt_entry that are to be replaced with... */
670 unsigned int plt_got_offset; /* ... address of this symbol in .got. */
671 unsigned int plt_reloc_offset; /* ... offset into relocation table. */
672 unsigned int plt_plt_offset; /* ... offset to start of .plt. */
673
674 /* Length of the PC-relative instruction containing plt_got_offset. */
675 unsigned int plt_got_insn_size;
676
677 /* Offset of the end of the PC-relative jump to plt0_entry. */
678 unsigned int plt_plt_insn_end;
679
680 /* Offset into plt_entry where the initial value of the GOT entry points. */
681 unsigned int plt_lazy_offset;
682
683 /* .eh_frame covering the .plt section. */
684 const bfd_byte *eh_frame_plt;
685 unsigned int eh_frame_plt_size;
686};
687
f8222080
L
688#define get_elf_x86_64_arch_data(bed) \
689 ((const struct elf_x86_64_backend_data *) (bed)->arch_data)
690
eed180f8 691#define get_elf_x86_64_backend_data(abfd) \
f8222080 692 get_elf_x86_64_arch_data (get_elf_backend_data (abfd))
eed180f8
RM
693
694#define GET_PLT_ENTRY_SIZE(abfd) \
695 get_elf_x86_64_backend_data (abfd)->plt_entry_size
696
697/* These are the standard parameters. */
698static const struct elf_x86_64_backend_data elf_x86_64_arch_bed =
699 {
700 elf_x86_64_plt0_entry, /* plt0_entry */
701 elf_x86_64_plt_entry, /* plt_entry */
702 sizeof (elf_x86_64_plt_entry), /* plt_entry_size */
703 2, /* plt0_got1_offset */
704 8, /* plt0_got2_offset */
705 12, /* plt0_got2_insn_end */
706 2, /* plt_got_offset */
707 7, /* plt_reloc_offset */
708 12, /* plt_plt_offset */
709 6, /* plt_got_insn_size */
710 PLT_ENTRY_SIZE, /* plt_plt_insn_end */
711 6, /* plt_lazy_offset */
712 elf_x86_64_eh_frame_plt, /* eh_frame_plt */
713 sizeof (elf_x86_64_eh_frame_plt), /* eh_frame_plt_size */
714 };
715
0ff2b86e
L
716static const struct elf_x86_64_backend_data elf_x86_64_bnd_arch_bed =
717 {
718 elf_x86_64_bnd_plt0_entry, /* plt0_entry */
719 elf_x86_64_bnd_plt_entry, /* plt_entry */
720 sizeof (elf_x86_64_bnd_plt_entry), /* plt_entry_size */
721 2, /* plt0_got1_offset */
722 1+8, /* plt0_got2_offset */
723 1+12, /* plt0_got2_insn_end */
724 1+2, /* plt_got_offset */
725 1, /* plt_reloc_offset */
726 7, /* plt_plt_offset */
727 1+6, /* plt_got_insn_size */
728 11, /* plt_plt_insn_end */
729 0, /* plt_lazy_offset */
730 elf_x86_64_eh_frame_plt, /* eh_frame_plt */
731 sizeof (elf_x86_64_eh_frame_plt), /* eh_frame_plt_size */
732 };
733
eed180f8
RM
734#define elf_backend_arch_data &elf_x86_64_arch_bed
735
70256ad8
AJ
736/* x86-64 ELF linker hash entry. */
737
351f65ca 738struct elf_x86_64_link_hash_entry
70256ad8 739{
c434dee6 740 struct elf_link_hash_entry elf;
70256ad8 741
c434dee6 742 /* Track dynamic relocs copied for this symbol. */
e03a8ed8 743 struct elf_dyn_relocs *dyn_relocs;
bffbf940
JJ
744
745#define GOT_UNKNOWN 0
746#define GOT_NORMAL 1
747#define GOT_TLS_GD 2
748#define GOT_TLS_IE 3
67a4f2b7
AO
749#define GOT_TLS_GDESC 4
750#define GOT_TLS_GD_BOTH_P(type) \
751 ((type) == (GOT_TLS_GD | GOT_TLS_GDESC))
752#define GOT_TLS_GD_P(type) \
753 ((type) == GOT_TLS_GD || GOT_TLS_GD_BOTH_P (type))
754#define GOT_TLS_GDESC_P(type) \
755 ((type) == GOT_TLS_GDESC || GOT_TLS_GD_BOTH_P (type))
756#define GOT_TLS_GD_ANY_P(type) \
757 (GOT_TLS_GD_P (type) || GOT_TLS_GDESC_P (type))
bffbf940 758 unsigned char tls_type;
67a4f2b7 759
bc696fd5
L
760 /* TRUE if a weak symbol with a real definition needs a copy reloc.
761 When there is a weak symbol with a real definition, the processor
762 independent code will have arranged for us to see the real
763 definition first. We need to copy the needs_copy bit from the
764 real definition and check it when allowing copy reloc in PIE. */
765 unsigned int needs_copy : 1;
766
0ff2b86e 767 /* TRUE if symbol has at least one BND relocation. */
bc696fd5 768 unsigned int has_bnd_reloc : 1;
0ff2b86e 769
dd7e64d4
L
770 /* Information about the GOT PLT entry. Filled when there are both
771 GOT and PLT relocations against the same function. */
772 union gotplt_union plt_got;
773
0ff2b86e
L
774 /* Information about the second PLT entry. Filled when has_bnd_reloc is
775 set. */
776 union gotplt_union plt_bnd;
777
67a4f2b7
AO
778 /* Offset of the GOTPLT entry reserved for the TLS descriptor,
779 starting at the end of the jump table. */
780 bfd_vma tlsdesc_got;
bffbf940
JJ
781};
782
351f65ca
L
783#define elf_x86_64_hash_entry(ent) \
784 ((struct elf_x86_64_link_hash_entry *)(ent))
bffbf940 785
351f65ca 786struct elf_x86_64_obj_tdata
bffbf940
JJ
787{
788 struct elf_obj_tdata root;
789
790 /* tls_type for each local got entry. */
791 char *local_got_tls_type;
67a4f2b7
AO
792
793 /* GOTPLT entries for TLS descriptors. */
794 bfd_vma *local_tlsdesc_gotent;
70256ad8
AJ
795};
796
351f65ca
L
797#define elf_x86_64_tdata(abfd) \
798 ((struct elf_x86_64_obj_tdata *) (abfd)->tdata.any)
bffbf940 799
351f65ca
L
800#define elf_x86_64_local_got_tls_type(abfd) \
801 (elf_x86_64_tdata (abfd)->local_got_tls_type)
bffbf940 802
351f65ca
L
803#define elf_x86_64_local_tlsdesc_gotent(abfd) \
804 (elf_x86_64_tdata (abfd)->local_tlsdesc_gotent)
bffbf940 805
0ffa91dd
NC
806#define is_x86_64_elf(bfd) \
807 (bfd_get_flavour (bfd) == bfd_target_elf_flavour \
808 && elf_tdata (bfd) != NULL \
4dfe6ac6 809 && elf_object_id (bfd) == X86_64_ELF_DATA)
0ffa91dd
NC
810
811static bfd_boolean
351f65ca 812elf_x86_64_mkobject (bfd *abfd)
0ffa91dd 813{
351f65ca 814 return bfd_elf_allocate_object (abfd, sizeof (struct elf_x86_64_obj_tdata),
4dfe6ac6 815 X86_64_ELF_DATA);
0ffa91dd
NC
816}
817
c434dee6 818/* x86-64 ELF linker hash table. */
8d88c4ca 819
351f65ca 820struct elf_x86_64_link_hash_table
407443a3 821{
c434dee6 822 struct elf_link_hash_table elf;
70256ad8 823
c434dee6 824 /* Short-cuts to get to dynamic linker sections. */
c434dee6
AJ
825 asection *sdynbss;
826 asection *srelbss;
e41b3a13 827 asection *plt_eh_frame;
0ff2b86e 828 asection *plt_bnd;
dd7e64d4 829 asection *plt_got;
70256ad8 830
4dfe6ac6
NC
831 union
832 {
bffbf940
JJ
833 bfd_signed_vma refcount;
834 bfd_vma offset;
835 } tls_ld_got;
836
67a4f2b7
AO
837 /* The amount of space used by the jump slots in the GOT. */
838 bfd_vma sgotplt_jump_table_size;
839
87d72d41
AM
840 /* Small local sym cache. */
841 struct sym_cache sym_cache;
9f03412a 842
351f65ca
L
843 bfd_vma (*r_info) (bfd_vma, bfd_vma);
844 bfd_vma (*r_sym) (bfd_vma);
248775ba 845 unsigned int pointer_r_type;
351f65ca
L
846 const char *dynamic_interpreter;
847 int dynamic_interpreter_size;
848
9f03412a
AO
849 /* _TLS_MODULE_BASE_ symbol. */
850 struct bfd_link_hash_entry *tls_module_base;
c25bc9fc
L
851
852 /* Used by local STT_GNU_IFUNC symbols. */
853 htab_t loc_hash_table;
4dfe6ac6
NC
854 void * loc_hash_memory;
855
856 /* The offset into splt of the PLT entry for the TLS descriptor
857 resolver. Special values are 0, if not necessary (or not found
858 to be necessary yet), and -1 if needed but not determined
859 yet. */
860 bfd_vma tlsdesc_plt;
861 /* The offset into sgot of the GOT entry used by the PLT entry
862 above. */
863 bfd_vma tlsdesc_got;
e1f98742
L
864
865 /* The index of the next R_X86_64_JUMP_SLOT entry in .rela.plt. */
866 bfd_vma next_jump_slot_index;
867 /* The index of the next R_X86_64_IRELATIVE entry in .rela.plt. */
868 bfd_vma next_irelative_index;
c434dee6 869};
70256ad8
AJ
870
871/* Get the x86-64 ELF linker hash table from a link_info structure. */
8d88c4ca 872
351f65ca 873#define elf_x86_64_hash_table(p) \
4dfe6ac6 874 (elf_hash_table_id ((struct elf_link_hash_table *) ((p)->hash)) \
351f65ca 875 == X86_64_ELF_DATA ? ((struct elf_x86_64_link_hash_table *) ((p)->hash)) : NULL)
8d88c4ca 876
351f65ca 877#define elf_x86_64_compute_jump_table_size(htab) \
6de2ae4a 878 ((htab)->elf.srelplt->reloc_count * GOT_ENTRY_SIZE)
67a4f2b7 879
407443a3 880/* Create an entry in an x86-64 ELF linker hash table. */
70256ad8
AJ
881
882static struct bfd_hash_entry *
351f65ca
L
883elf_x86_64_link_hash_newfunc (struct bfd_hash_entry *entry,
884 struct bfd_hash_table *table,
885 const char *string)
70256ad8 886{
70256ad8 887 /* Allocate the structure if it has not already been allocated by a
c434dee6
AJ
888 subclass. */
889 if (entry == NULL)
890 {
a50b1753 891 entry = (struct bfd_hash_entry *)
eed180f8
RM
892 bfd_hash_allocate (table,
893 sizeof (struct elf_x86_64_link_hash_entry));
c434dee6
AJ
894 if (entry == NULL)
895 return entry;
896 }
70256ad8
AJ
897
898 /* Call the allocation method of the superclass. */
c434dee6
AJ
899 entry = _bfd_elf_link_hash_newfunc (entry, table, string);
900 if (entry != NULL)
70256ad8 901 {
351f65ca 902 struct elf_x86_64_link_hash_entry *eh;
c434dee6 903
351f65ca 904 eh = (struct elf_x86_64_link_hash_entry *) entry;
c434dee6 905 eh->dyn_relocs = NULL;
bffbf940 906 eh->tls_type = GOT_UNKNOWN;
bc696fd5
L
907 eh->needs_copy = 0;
908 eh->has_bnd_reloc = 0;
0ff2b86e 909 eh->plt_bnd.offset = (bfd_vma) -1;
dd7e64d4 910 eh->plt_got.offset = (bfd_vma) -1;
67a4f2b7 911 eh->tlsdesc_got = (bfd_vma) -1;
70256ad8
AJ
912 }
913
c434dee6 914 return entry;
70256ad8
AJ
915}
916
c25bc9fc
L
917/* Compute a hash of a local hash entry. We use elf_link_hash_entry
918 for local symbol so that we can handle local STT_GNU_IFUNC symbols
919 as global symbol. We reuse indx and dynstr_index for local symbol
920 hash since they aren't used by global symbols in this backend. */
921
922static hashval_t
351f65ca 923elf_x86_64_local_htab_hash (const void *ptr)
c25bc9fc
L
924{
925 struct elf_link_hash_entry *h
926 = (struct elf_link_hash_entry *) ptr;
d2149d72 927 return ELF_LOCAL_SYMBOL_HASH (h->indx, h->dynstr_index);
c25bc9fc
L
928}
929
930/* Compare local hash entries. */
931
932static int
351f65ca 933elf_x86_64_local_htab_eq (const void *ptr1, const void *ptr2)
c25bc9fc
L
934{
935 struct elf_link_hash_entry *h1
936 = (struct elf_link_hash_entry *) ptr1;
937 struct elf_link_hash_entry *h2
938 = (struct elf_link_hash_entry *) ptr2;
939
940 return h1->indx == h2->indx && h1->dynstr_index == h2->dynstr_index;
941}
942
943/* Find and/or create a hash entry for local symbol. */
944
945static struct elf_link_hash_entry *
351f65ca
L
946elf_x86_64_get_local_sym_hash (struct elf_x86_64_link_hash_table *htab,
947 bfd *abfd, const Elf_Internal_Rela *rel,
948 bfd_boolean create)
c25bc9fc 949{
351f65ca 950 struct elf_x86_64_link_hash_entry e, *ret;
c25bc9fc 951 asection *sec = abfd->sections;
d2149d72 952 hashval_t h = ELF_LOCAL_SYMBOL_HASH (sec->id,
351f65ca 953 htab->r_sym (rel->r_info));
c25bc9fc
L
954 void **slot;
955
956 e.elf.indx = sec->id;
351f65ca 957 e.elf.dynstr_index = htab->r_sym (rel->r_info);
c25bc9fc
L
958 slot = htab_find_slot_with_hash (htab->loc_hash_table, &e, h,
959 create ? INSERT : NO_INSERT);
960
961 if (!slot)
962 return NULL;
963
964 if (*slot)
965 {
351f65ca 966 ret = (struct elf_x86_64_link_hash_entry *) *slot;
c25bc9fc
L
967 return &ret->elf;
968 }
969
351f65ca 970 ret = (struct elf_x86_64_link_hash_entry *)
c25bc9fc 971 objalloc_alloc ((struct objalloc *) htab->loc_hash_memory,
351f65ca 972 sizeof (struct elf_x86_64_link_hash_entry));
c25bc9fc
L
973 if (ret)
974 {
975 memset (ret, 0, sizeof (*ret));
976 ret->elf.indx = sec->id;
351f65ca 977 ret->elf.dynstr_index = htab->r_sym (rel->r_info);
c25bc9fc 978 ret->elf.dynindx = -1;
dd7e64d4 979 ret->plt_got.offset = (bfd_vma) -1;
c25bc9fc
L
980 *slot = ret;
981 }
982 return &ret->elf;
983}
984
68faa637
AM
985/* Destroy an X86-64 ELF linker hash table. */
986
987static void
d495ab0d 988elf_x86_64_link_hash_table_free (bfd *obfd)
68faa637
AM
989{
990 struct elf_x86_64_link_hash_table *htab
d495ab0d 991 = (struct elf_x86_64_link_hash_table *) obfd->link.hash;
68faa637
AM
992
993 if (htab->loc_hash_table)
994 htab_delete (htab->loc_hash_table);
995 if (htab->loc_hash_memory)
996 objalloc_free ((struct objalloc *) htab->loc_hash_memory);
d495ab0d 997 _bfd_elf_link_hash_table_free (obfd);
68faa637
AM
998}
999
8d88c4ca
NC
1000/* Create an X86-64 ELF linker hash table. */
1001
1002static struct bfd_link_hash_table *
351f65ca 1003elf_x86_64_link_hash_table_create (bfd *abfd)
8d88c4ca 1004{
351f65ca
L
1005 struct elf_x86_64_link_hash_table *ret;
1006 bfd_size_type amt = sizeof (struct elf_x86_64_link_hash_table);
8d88c4ca 1007
7bf52ea2 1008 ret = (struct elf_x86_64_link_hash_table *) bfd_zmalloc (amt);
c434dee6 1009 if (ret == NULL)
8d88c4ca
NC
1010 return NULL;
1011
eb4ff4d6 1012 if (!_bfd_elf_link_hash_table_init (&ret->elf, abfd,
351f65ca
L
1013 elf_x86_64_link_hash_newfunc,
1014 sizeof (struct elf_x86_64_link_hash_entry),
4dfe6ac6 1015 X86_64_ELF_DATA))
8d88c4ca 1016 {
e2d34d7d 1017 free (ret);
8d88c4ca
NC
1018 return NULL;
1019 }
1020
351f65ca
L
1021 if (ABI_64_P (abfd))
1022 {
1023 ret->r_info = elf64_r_info;
1024 ret->r_sym = elf64_r_sym;
248775ba 1025 ret->pointer_r_type = R_X86_64_64;
351f65ca
L
1026 ret->dynamic_interpreter = ELF64_DYNAMIC_INTERPRETER;
1027 ret->dynamic_interpreter_size = sizeof ELF64_DYNAMIC_INTERPRETER;
1028 }
1029 else
1030 {
1031 ret->r_info = elf32_r_info;
1032 ret->r_sym = elf32_r_sym;
248775ba 1033 ret->pointer_r_type = R_X86_64_32;
351f65ca
L
1034 ret->dynamic_interpreter = ELF32_DYNAMIC_INTERPRETER;
1035 ret->dynamic_interpreter_size = sizeof ELF32_DYNAMIC_INTERPRETER;
1036 }
1037
c25bc9fc 1038 ret->loc_hash_table = htab_try_create (1024,
351f65ca
L
1039 elf_x86_64_local_htab_hash,
1040 elf_x86_64_local_htab_eq,
c25bc9fc
L
1041 NULL);
1042 ret->loc_hash_memory = objalloc_create ();
1043 if (!ret->loc_hash_table || !ret->loc_hash_memory)
1044 {
d495ab0d 1045 elf_x86_64_link_hash_table_free (abfd);
c25bc9fc
L
1046 return NULL;
1047 }
d495ab0d 1048 ret->elf.root.hash_table_free = elf_x86_64_link_hash_table_free;
c25bc9fc 1049
c434dee6
AJ
1050 return &ret->elf.root;
1051}
1052
c434dee6
AJ
1053/* Create .plt, .rela.plt, .got, .got.plt, .rela.got, .dynbss, and
1054 .rela.bss sections in DYNOBJ, and set up shortcuts to them in our
1055 hash table. */
1056
b34976b6 1057static bfd_boolean
351f65ca
L
1058elf_x86_64_create_dynamic_sections (bfd *dynobj,
1059 struct bfd_link_info *info)
c434dee6 1060{
351f65ca 1061 struct elf_x86_64_link_hash_table *htab;
c434dee6 1062
c434dee6 1063 if (!_bfd_elf_create_dynamic_sections (dynobj, info))
b34976b6 1064 return FALSE;
c434dee6 1065
351f65ca 1066 htab = elf_x86_64_hash_table (info);
4dfe6ac6
NC
1067 if (htab == NULL)
1068 return FALSE;
1069
3d4d4302 1070 htab->sdynbss = bfd_get_linker_section (dynobj, ".dynbss");
9a926d55 1071 if (!htab->sdynbss)
c434dee6
AJ
1072 abort ();
1073
9a926d55
L
1074 if (info->executable)
1075 {
1076 /* Always allow copy relocs for building executables. */
9d157cb9 1077 asection *s = bfd_get_linker_section (dynobj, ".rela.bss");
9a926d55
L
1078 if (s == NULL)
1079 {
1080 const struct elf_backend_data *bed = get_elf_backend_data (dynobj);
1081 s = bfd_make_section_anyway_with_flags (dynobj,
1082 ".rela.bss",
1083 (bed->dynamic_sec_flags
1084 | SEC_READONLY));
1085 if (s == NULL
1086 || ! bfd_set_section_alignment (dynobj, s,
1087 bed->s->log_file_align))
1088 return FALSE;
1089 }
1090 htab->srelbss = s;
1091 }
1092
e41b3a13 1093 if (!info->no_ld_generated_unwind_info
2fe0fd06 1094 && htab->plt_eh_frame == NULL
e4de50d4 1095 && htab->elf.splt != NULL)
e41b3a13 1096 {
bbf96e4e
L
1097 flagword flags = (SEC_ALLOC | SEC_LOAD | SEC_READONLY
1098 | SEC_HAS_CONTENTS | SEC_IN_MEMORY
1099 | SEC_LINKER_CREATED);
e41b3a13 1100 htab->plt_eh_frame
bbf96e4e 1101 = bfd_make_section_anyway_with_flags (dynobj, ".eh_frame", flags);
e41b3a13
JJ
1102 if (htab->plt_eh_frame == NULL
1103 || !bfd_set_section_alignment (dynobj, htab->plt_eh_frame, 3))
1104 return FALSE;
e41b3a13 1105 }
b34976b6 1106 return TRUE;
c434dee6
AJ
1107}
1108
1109/* Copy the extra info we tack onto an elf_link_hash_entry. */
1110
1111static void
351f65ca
L
1112elf_x86_64_copy_indirect_symbol (struct bfd_link_info *info,
1113 struct elf_link_hash_entry *dir,
1114 struct elf_link_hash_entry *ind)
c434dee6 1115{
351f65ca 1116 struct elf_x86_64_link_hash_entry *edir, *eind;
c434dee6 1117
351f65ca
L
1118 edir = (struct elf_x86_64_link_hash_entry *) dir;
1119 eind = (struct elf_x86_64_link_hash_entry *) ind;
c434dee6 1120
0ff2b86e
L
1121 if (!edir->has_bnd_reloc)
1122 edir->has_bnd_reloc = eind->has_bnd_reloc;
1123
c434dee6
AJ
1124 if (eind->dyn_relocs != NULL)
1125 {
1126 if (edir->dyn_relocs != NULL)
1127 {
e03a8ed8
L
1128 struct elf_dyn_relocs **pp;
1129 struct elf_dyn_relocs *p;
c434dee6 1130
fcfa13d2 1131 /* Add reloc counts against the indirect sym to the direct sym
c434dee6
AJ
1132 list. Merge any entries against the same section. */
1133 for (pp = &eind->dyn_relocs; (p = *pp) != NULL; )
1134 {
e03a8ed8 1135 struct elf_dyn_relocs *q;
c434dee6
AJ
1136
1137 for (q = edir->dyn_relocs; q != NULL; q = q->next)
1138 if (q->sec == p->sec)
1139 {
1140 q->pc_count += p->pc_count;
1141 q->count += p->count;
1142 *pp = p->next;
1143 break;
1144 }
1145 if (q == NULL)
1146 pp = &p->next;
1147 }
1148 *pp = edir->dyn_relocs;
1149 }
1150
1151 edir->dyn_relocs = eind->dyn_relocs;
1152 eind->dyn_relocs = NULL;
1153 }
1154
bffbf940
JJ
1155 if (ind->root.type == bfd_link_hash_indirect
1156 && dir->got.refcount <= 0)
1157 {
1158 edir->tls_type = eind->tls_type;
1159 eind->tls_type = GOT_UNKNOWN;
1160 }
1161
d40d037c
AJ
1162 if (ELIMINATE_COPY_RELOCS
1163 && ind->root.type != bfd_link_hash_indirect
f5385ebf
AM
1164 && dir->dynamic_adjusted)
1165 {
1166 /* If called to transfer flags for a weakdef during processing
1167 of elf_adjust_dynamic_symbol, don't copy non_got_ref.
1168 We clear it ourselves for ELIMINATE_COPY_RELOCS. */
1169 dir->ref_dynamic |= ind->ref_dynamic;
1170 dir->ref_regular |= ind->ref_regular;
1171 dir->ref_regular_nonweak |= ind->ref_regular_nonweak;
1172 dir->needs_plt |= ind->needs_plt;
1173 dir->pointer_equality_needed |= ind->pointer_equality_needed;
1174 }
d40d037c 1175 else
fcfa13d2 1176 _bfd_elf_link_hash_copy_indirect (info, dir, ind);
8d88c4ca
NC
1177}
1178
b34976b6 1179static bfd_boolean
27482721 1180elf64_x86_64_elf_object_p (bfd *abfd)
bffbf940 1181{
8d88c4ca
NC
1182 /* Set the right machine number for an x86-64 elf64 file. */
1183 bfd_default_set_arch_mach (abfd, bfd_arch_i386, bfd_mach_x86_64);
b34976b6 1184 return TRUE;
8d88c4ca
NC
1185}
1186
8059fb19
RM
1187static bfd_boolean
1188elf32_x86_64_elf_object_p (bfd *abfd)
1189{
1190 /* Set the right machine number for an x86-64 elf32 file. */
1191 bfd_default_set_arch_mach (abfd, bfd_arch_i386, bfd_mach_x64_32);
1192 return TRUE;
1193}
1194
142411ca
L
1195/* Return TRUE if the TLS access code sequence support transition
1196 from R_TYPE. */
1197
1198static bfd_boolean
351f65ca
L
1199elf_x86_64_check_tls_transition (bfd *abfd,
1200 struct bfd_link_info *info,
1201 asection *sec,
1202 bfd_byte *contents,
1203 Elf_Internal_Shdr *symtab_hdr,
1204 struct elf_link_hash_entry **sym_hashes,
1205 unsigned int r_type,
1206 const Elf_Internal_Rela *rel,
1207 const Elf_Internal_Rela *relend)
bffbf940 1208{
142411ca
L
1209 unsigned int val;
1210 unsigned long r_symndx;
5c98a14e 1211 bfd_boolean largepic = FALSE;
142411ca
L
1212 struct elf_link_hash_entry *h;
1213 bfd_vma offset;
351f65ca 1214 struct elf_x86_64_link_hash_table *htab;
142411ca
L
1215
1216 /* Get the section contents. */
1217 if (contents == NULL)
1218 {
1219 if (elf_section_data (sec)->this_hdr.contents != NULL)
1220 contents = elf_section_data (sec)->this_hdr.contents;
1221 else
1222 {
1223 /* FIXME: How to better handle error condition? */
1224 if (!bfd_malloc_and_get_section (abfd, sec, &contents))
1225 return FALSE;
bffbf940 1226
142411ca
L
1227 /* Cache the section contents for elf_link_input_bfd. */
1228 elf_section_data (sec)->this_hdr.contents = contents;
1229 }
1230 }
1231
351f65ca 1232 htab = elf_x86_64_hash_table (info);
142411ca 1233 offset = rel->r_offset;
bffbf940 1234 switch (r_type)
142411ca
L
1235 {
1236 case R_X86_64_TLSGD:
1237 case R_X86_64_TLSLD:
1238 if ((rel + 1) >= relend)
1239 return FALSE;
1240
1241 if (r_type == R_X86_64_TLSGD)
1242 {
52bc799a 1243 /* Check transition from GD access model. For 64bit, only
142411ca
L
1244 .byte 0x66; leaq foo@tlsgd(%rip), %rdi
1245 .word 0x6666; rex64; call __tls_get_addr
52bc799a
L
1246 can transit to different access model. For 32bit, only
1247 leaq foo@tlsgd(%rip), %rdi
1248 .word 0x6666; rex64; call __tls_get_addr
5c98a14e
JJ
1249 can transit to different access model. For largepic
1250 we also support:
1251 leaq foo@tlsgd(%rip), %rdi
1252 movabsq $__tls_get_addr@pltoff, %rax
1253 addq $rbx, %rax
1254 call *%rax. */
142411ca 1255
fa289a5f
AM
1256 static const unsigned char call[] = { 0x66, 0x66, 0x48, 0xe8 };
1257 static const unsigned char leaq[] = { 0x66, 0x48, 0x8d, 0x3d };
1258
5c98a14e 1259 if ((offset + 12) > sec->size)
142411ca 1260 return FALSE;
52bc799a 1261
5c98a14e
JJ
1262 if (memcmp (contents + offset + 4, call, 4) != 0)
1263 {
1264 if (!ABI_64_P (abfd)
1265 || (offset + 19) > sec->size
1266 || offset < 3
1267 || memcmp (contents + offset - 3, leaq + 1, 3) != 0
1268 || memcmp (contents + offset + 4, "\x48\xb8", 2) != 0
1269 || memcmp (contents + offset + 14, "\x48\x01\xd8\xff\xd0", 5)
1270 != 0)
1271 return FALSE;
1272 largepic = TRUE;
1273 }
1274 else if (ABI_64_P (abfd))
52bc799a 1275 {
52bc799a 1276 if (offset < 4
fa289a5f 1277 || memcmp (contents + offset - 4, leaq, 4) != 0)
52bc799a
L
1278 return FALSE;
1279 }
1280 else
1281 {
52bc799a 1282 if (offset < 3
fa289a5f 1283 || memcmp (contents + offset - 3, leaq + 1, 3) != 0)
52bc799a
L
1284 return FALSE;
1285 }
142411ca
L
1286 }
1287 else
1288 {
1289 /* Check transition from LD access model. Only
1290 leaq foo@tlsld(%rip), %rdi;
1291 call __tls_get_addr
5c98a14e
JJ
1292 can transit to different access model. For largepic
1293 we also support:
1294 leaq foo@tlsld(%rip), %rdi
1295 movabsq $__tls_get_addr@pltoff, %rax
1296 addq $rbx, %rax
1297 call *%rax. */
142411ca 1298
fa289a5f 1299 static const unsigned char lea[] = { 0x48, 0x8d, 0x3d };
142411ca
L
1300
1301 if (offset < 3 || (offset + 9) > sec->size)
1302 return FALSE;
1303
5c98a14e 1304 if (memcmp (contents + offset - 3, lea, 3) != 0)
142411ca 1305 return FALSE;
5c98a14e
JJ
1306
1307 if (0xe8 != *(contents + offset + 4))
1308 {
1309 if (!ABI_64_P (abfd)
1310 || (offset + 19) > sec->size
1311 || memcmp (contents + offset + 4, "\x48\xb8", 2) != 0
1312 || memcmp (contents + offset + 14, "\x48\x01\xd8\xff\xd0", 5)
1313 != 0)
1314 return FALSE;
1315 largepic = TRUE;
1316 }
142411ca
L
1317 }
1318
351f65ca 1319 r_symndx = htab->r_sym (rel[1].r_info);
142411ca
L
1320 if (r_symndx < symtab_hdr->sh_info)
1321 return FALSE;
1322
1323 h = sym_hashes[r_symndx - symtab_hdr->sh_info];
c4fb387b 1324 /* Use strncmp to check __tls_get_addr since __tls_get_addr
eed180f8 1325 may be versioned. */
142411ca
L
1326 return (h != NULL
1327 && h->root.root.string != NULL
5c98a14e
JJ
1328 && (largepic
1329 ? ELF32_R_TYPE (rel[1].r_info) == R_X86_64_PLTOFF64
1330 : (ELF32_R_TYPE (rel[1].r_info) == R_X86_64_PC32
1331 || ELF32_R_TYPE (rel[1].r_info) == R_X86_64_PLT32))
c4fb387b
L
1332 && (strncmp (h->root.root.string,
1333 "__tls_get_addr", 14) == 0));
142411ca
L
1334
1335 case R_X86_64_GOTTPOFF:
1336 /* Check transition from IE access model:
4a4c5f25
L
1337 mov foo@gottpoff(%rip), %reg
1338 add foo@gottpoff(%rip), %reg
142411ca
L
1339 */
1340
4a4c5f25
L
1341 /* Check REX prefix first. */
1342 if (offset >= 3 && (offset + 4) <= sec->size)
1343 {
1344 val = bfd_get_8 (abfd, contents + offset - 3);
1345 if (val != 0x48 && val != 0x4c)
1346 {
1347 /* X32 may have 0x44 REX prefix or no REX prefix. */
1348 if (ABI_64_P (abfd))
1349 return FALSE;
1350 }
1351 }
1352 else
1353 {
1354 /* X32 may not have any REX prefix. */
1355 if (ABI_64_P (abfd))
1356 return FALSE;
1357 if (offset < 2 || (offset + 3) > sec->size)
1358 return FALSE;
1359 }
142411ca
L
1360
1361 val = bfd_get_8 (abfd, contents + offset - 2);
1362 if (val != 0x8b && val != 0x03)
1363 return FALSE;
1364
1365 val = bfd_get_8 (abfd, contents + offset - 1);
1366 return (val & 0xc7) == 5;
1367
1368 case R_X86_64_GOTPC32_TLSDESC:
1369 /* Check transition from GDesc access model:
1370 leaq x@tlsdesc(%rip), %rax
1371
1372 Make sure it's a leaq adding rip to a 32-bit offset
1373 into any register, although it's probably almost always
1374 going to be rax. */
1375
1376 if (offset < 3 || (offset + 4) > sec->size)
1377 return FALSE;
1378
1379 val = bfd_get_8 (abfd, contents + offset - 3);
1380 if ((val & 0xfb) != 0x48)
1381 return FALSE;
1382
1383 if (bfd_get_8 (abfd, contents + offset - 2) != 0x8d)
1384 return FALSE;
1385
1386 val = bfd_get_8 (abfd, contents + offset - 1);
1387 return (val & 0xc7) == 0x05;
1388
1389 case R_X86_64_TLSDESC_CALL:
1390 /* Check transition from GDesc access model:
1391 call *x@tlsdesc(%rax)
1392 */
1393 if (offset + 2 <= sec->size)
1394 {
1395 /* Make sure that it's a call *x@tlsdesc(%rax). */
fa289a5f
AM
1396 static const unsigned char call[] = { 0xff, 0x10 };
1397 return memcmp (contents + offset, call, 2) == 0;
142411ca
L
1398 }
1399
1400 return FALSE;
1401
1402 default:
1403 abort ();
1404 }
1405}
1406
1407/* Return TRUE if the TLS access transition is OK or no transition
1408 will be performed. Update R_TYPE if there is a transition. */
1409
1410static bfd_boolean
351f65ca
L
1411elf_x86_64_tls_transition (struct bfd_link_info *info, bfd *abfd,
1412 asection *sec, bfd_byte *contents,
1413 Elf_Internal_Shdr *symtab_hdr,
1414 struct elf_link_hash_entry **sym_hashes,
1415 unsigned int *r_type, int tls_type,
1416 const Elf_Internal_Rela *rel,
1417 const Elf_Internal_Rela *relend,
1418 struct elf_link_hash_entry *h,
1419 unsigned long r_symndx)
142411ca
L
1420{
1421 unsigned int from_type = *r_type;
1422 unsigned int to_type = from_type;
1423 bfd_boolean check = TRUE;
1424
bb1cb422
L
1425 /* Skip TLS transition for functions. */
1426 if (h != NULL
1427 && (h->type == STT_FUNC
1428 || h->type == STT_GNU_IFUNC))
1429 return TRUE;
1430
142411ca 1431 switch (from_type)
bffbf940
JJ
1432 {
1433 case R_X86_64_TLSGD:
67a4f2b7
AO
1434 case R_X86_64_GOTPC32_TLSDESC:
1435 case R_X86_64_TLSDESC_CALL:
bffbf940 1436 case R_X86_64_GOTTPOFF:
1d85728f 1437 if (info->executable)
142411ca
L
1438 {
1439 if (h == NULL)
1440 to_type = R_X86_64_TPOFF32;
1441 else
1442 to_type = R_X86_64_GOTTPOFF;
1443 }
1444
351f65ca 1445 /* When we are called from elf_x86_64_relocate_section,
142411ca
L
1446 CONTENTS isn't NULL and there may be additional transitions
1447 based on TLS_TYPE. */
1448 if (contents != NULL)
1449 {
1450 unsigned int new_to_type = to_type;
1451
1d85728f 1452 if (info->executable
142411ca
L
1453 && h != NULL
1454 && h->dynindx == -1
1455 && tls_type == GOT_TLS_IE)
1456 new_to_type = R_X86_64_TPOFF32;
1457
1458 if (to_type == R_X86_64_TLSGD
1459 || to_type == R_X86_64_GOTPC32_TLSDESC
1460 || to_type == R_X86_64_TLSDESC_CALL)
1461 {
1462 if (tls_type == GOT_TLS_IE)
1463 new_to_type = R_X86_64_GOTTPOFF;
1464 }
1465
1466 /* We checked the transition before when we were called from
351f65ca 1467 elf_x86_64_check_relocs. We only want to check the new
142411ca
L
1468 transition which hasn't been checked before. */
1469 check = new_to_type != to_type && from_type == to_type;
1470 to_type = new_to_type;
1471 }
1472
1473 break;
1474
bffbf940 1475 case R_X86_64_TLSLD:
1d85728f 1476 if (info->executable)
142411ca
L
1477 to_type = R_X86_64_TPOFF32;
1478 break;
1479
1480 default:
1481 return TRUE;
bffbf940
JJ
1482 }
1483
142411ca
L
1484 /* Return TRUE if there is no transition. */
1485 if (from_type == to_type)
1486 return TRUE;
1487
1488 /* Check if the transition can be performed. */
1489 if (check
351f65ca
L
1490 && ! elf_x86_64_check_tls_transition (abfd, info, sec, contents,
1491 symtab_hdr, sym_hashes,
1492 from_type, rel, relend))
142411ca 1493 {
2f629d23 1494 reloc_howto_type *from, *to;
4c544807 1495 const char *name;
142411ca 1496
351f65ca
L
1497 from = elf_x86_64_rtype_to_howto (abfd, from_type);
1498 to = elf_x86_64_rtype_to_howto (abfd, to_type);
142411ca 1499
4c544807
L
1500 if (h)
1501 name = h->root.root.string;
1502 else
1503 {
351f65ca 1504 struct elf_x86_64_link_hash_table *htab;
4dfe6ac6 1505
351f65ca 1506 htab = elf_x86_64_hash_table (info);
4dfe6ac6
NC
1507 if (htab == NULL)
1508 name = "*unknown*";
1509 else
1510 {
1511 Elf_Internal_Sym *isym;
1512
1513 isym = bfd_sym_from_r_symndx (&htab->sym_cache,
1514 abfd, r_symndx);
1515 name = bfd_elf_sym_name (abfd, symtab_hdr, isym, NULL);
1516 }
4c544807
L
1517 }
1518
142411ca
L
1519 (*_bfd_error_handler)
1520 (_("%B: TLS transition from %s to %s against `%s' at 0x%lx "
1521 "in section `%A' failed"),
4c544807 1522 abfd, sec, from->name, to->name, name,
142411ca
L
1523 (unsigned long) rel->r_offset);
1524 bfd_set_error (bfd_error_bad_value);
1525 return FALSE;
1526 }
1527
1528 *r_type = to_type;
1529 return TRUE;
bffbf940
JJ
1530}
1531
c1d11331
L
1532/* Rename some of the generic section flags to better document how they
1533 are used here. */
1534#define need_convert_mov_to_lea sec_flg0
1535
70256ad8 1536/* Look through the relocs for a section during the first phase, and
c434dee6
AJ
1537 calculate needed space in the global offset table, procedure
1538 linkage table, and dynamic reloc sections. */
70256ad8 1539
b34976b6 1540static bfd_boolean
351f65ca
L
1541elf_x86_64_check_relocs (bfd *abfd, struct bfd_link_info *info,
1542 asection *sec,
1543 const Elf_Internal_Rela *relocs)
70256ad8 1544{
351f65ca 1545 struct elf_x86_64_link_hash_table *htab;
70256ad8
AJ
1546 Elf_Internal_Shdr *symtab_hdr;
1547 struct elf_link_hash_entry **sym_hashes;
70256ad8
AJ
1548 const Elf_Internal_Rela *rel;
1549 const Elf_Internal_Rela *rel_end;
70256ad8 1550 asection *sreloc;
dd7e64d4 1551 bfd_boolean use_plt_got;
70256ad8 1552
1049f94e 1553 if (info->relocatable)
b34976b6 1554 return TRUE;
70256ad8 1555
0ffa91dd
NC
1556 BFD_ASSERT (is_x86_64_elf (abfd));
1557
351f65ca 1558 htab = elf_x86_64_hash_table (info);
4dfe6ac6
NC
1559 if (htab == NULL)
1560 return FALSE;
1561
dd7e64d4
L
1562 use_plt_got = get_elf_x86_64_backend_data (abfd) == &elf_x86_64_arch_bed;
1563
0ffa91dd 1564 symtab_hdr = &elf_symtab_hdr (abfd);
70256ad8 1565 sym_hashes = elf_sym_hashes (abfd);
70256ad8 1566
c434dee6 1567 sreloc = NULL;
cbe950e9 1568
70256ad8
AJ
1569 rel_end = relocs + sec->reloc_count;
1570 for (rel = relocs; rel < rel_end; rel++)
1571 {
bffbf940 1572 unsigned int r_type;
70256ad8
AJ
1573 unsigned long r_symndx;
1574 struct elf_link_hash_entry *h;
4c544807
L
1575 Elf_Internal_Sym *isym;
1576 const char *name;
06a6a421 1577 bfd_boolean size_reloc;
70256ad8 1578
351f65ca
L
1579 r_symndx = htab->r_sym (rel->r_info);
1580 r_type = ELF32_R_TYPE (rel->r_info);
c434dee6
AJ
1581
1582 if (r_symndx >= NUM_SHDR_ENTRIES (symtab_hdr))
1583 {
d003868e
AM
1584 (*_bfd_error_handler) (_("%B: bad symbol index: %d"),
1585 abfd, r_symndx);
b34976b6 1586 return FALSE;
c434dee6
AJ
1587 }
1588
70256ad8 1589 if (r_symndx < symtab_hdr->sh_info)
c25bc9fc
L
1590 {
1591 /* A local symbol. */
c2e61a4e
L
1592 isym = bfd_sym_from_r_symndx (&htab->sym_cache,
1593 abfd, r_symndx);
1594 if (isym == NULL)
1595 return FALSE;
c25bc9fc
L
1596
1597 /* Check relocation against local STT_GNU_IFUNC symbol. */
351f65ca 1598 if (ELF_ST_TYPE (isym->st_info) == STT_GNU_IFUNC)
c25bc9fc 1599 {
351f65ca
L
1600 h = elf_x86_64_get_local_sym_hash (htab, abfd, rel,
1601 TRUE);
c25bc9fc 1602 if (h == NULL)
c2e61a4e 1603 return FALSE;
6bbec505 1604
c25bc9fc
L
1605 /* Fake a STT_GNU_IFUNC symbol. */
1606 h->type = STT_GNU_IFUNC;
1607 h->def_regular = 1;
1608 h->ref_regular = 1;
1609 h->forced_local = 1;
1610 h->root.type = bfd_link_hash_defined;
1611 }
1612 else
1613 h = NULL;
1614 }
70256ad8 1615 else
71cb9464 1616 {
4c544807 1617 isym = NULL;
71cb9464
L
1618 h = sym_hashes[r_symndx - symtab_hdr->sh_info];
1619 while (h->root.type == bfd_link_hash_indirect
1620 || h->root.type == bfd_link_hash_warning)
1621 h = (struct elf_link_hash_entry *) h->root.u.i.link;
c25bc9fc 1622 }
cbe950e9 1623
d1534d16
L
1624 /* Check invalid x32 relocations. */
1625 if (!ABI_64_P (abfd))
1626 switch (r_type)
1627 {
1628 default:
1629 break;
1630
d1534d16
L
1631 case R_X86_64_DTPOFF64:
1632 case R_X86_64_TPOFF64:
1633 case R_X86_64_PC64:
1634 case R_X86_64_GOTOFF64:
1635 case R_X86_64_GOT64:
1636 case R_X86_64_GOTPCREL64:
1637 case R_X86_64_GOTPC64:
1638 case R_X86_64_GOTPLT64:
1639 case R_X86_64_PLTOFF64:
1640 {
1641 if (h)
1642 name = h->root.root.string;
1643 else
1644 name = bfd_elf_sym_name (abfd, symtab_hdr, isym,
1645 NULL);
1646 (*_bfd_error_handler)
1647 (_("%B: relocation %s against symbol `%s' isn't "
1648 "supported in x32 mode"), abfd,
1649 x86_64_elf_howto_table[r_type].name, name);
1650 bfd_set_error (bfd_error_bad_value);
1651 return FALSE;
1652 }
1653 break;
1654 }
1655
c25bc9fc
L
1656 if (h != NULL)
1657 {
cbe950e9
L
1658 /* Create the ifunc sections for static executables. If we
1659 never see an indirect function symbol nor we are building
1660 a static executable, those sections will be empty and
1661 won't appear in output. */
1662 switch (r_type)
1663 {
1664 default:
1665 break;
1666
0ff2b86e
L
1667 case R_X86_64_PC32_BND:
1668 case R_X86_64_PLT32_BND:
d258b828
IZ
1669 case R_X86_64_PC32:
1670 case R_X86_64_PLT32:
1671 case R_X86_64_32:
1672 case R_X86_64_64:
0ff2b86e
L
1673 /* MPX PLT is supported only if elf_x86_64_arch_bed
1674 is used in 64-bit mode. */
1675 if (ABI_64_P (abfd)
d258b828
IZ
1676 && info->bndplt
1677 && (get_elf_x86_64_backend_data (abfd)
1678 == &elf_x86_64_arch_bed))
0ff2b86e 1679 {
bc696fd5 1680 elf_x86_64_hash_entry (h)->has_bnd_reloc = 1;
0ff2b86e
L
1681
1682 /* Create the second PLT for Intel MPX support. */
1683 if (htab->plt_bnd == NULL)
1684 {
1685 unsigned int plt_bnd_align;
1686 const struct elf_backend_data *bed;
1687
1688 bed = get_elf_backend_data (info->output_bfd);
6db50b4c
L
1689 BFD_ASSERT (sizeof (elf_x86_64_bnd_plt2_entry) == 8
1690 && (sizeof (elf_x86_64_bnd_plt2_entry)
1691 == sizeof (elf_x86_64_legacy_plt2_entry)));
1692 plt_bnd_align = 3;
0ff2b86e
L
1693
1694 if (htab->elf.dynobj == NULL)
1695 htab->elf.dynobj = abfd;
1696 htab->plt_bnd
1697 = bfd_make_section_anyway_with_flags (htab->elf.dynobj,
1698 ".plt.bnd",
1699 (bed->dynamic_sec_flags
1700 | SEC_ALLOC
1701 | SEC_CODE
1702 | SEC_LOAD
1703 | SEC_READONLY));
1704 if (htab->plt_bnd == NULL
1705 || !bfd_set_section_alignment (htab->elf.dynobj,
1706 htab->plt_bnd,
1707 plt_bnd_align))
1708 return FALSE;
1709 }
1710 }
1711
cbe950e9 1712 case R_X86_64_32S:
cbe950e9 1713 case R_X86_64_PC64:
cbe950e9
L
1714 case R_X86_64_GOTPCREL:
1715 case R_X86_64_GOTPCREL64:
9d4057ee
AM
1716 if (htab->elf.dynobj == NULL)
1717 htab->elf.dynobj = abfd;
1718 if (!_bfd_elf_create_ifunc_sections (htab->elf.dynobj, info))
c2e61a4e 1719 return FALSE;
cbe950e9
L
1720 break;
1721 }
1722
ad1e85de
L
1723 /* It is referenced by a non-shared object. */
1724 h->ref_regular = 1;
61315175 1725 h->root.non_ir_ref = 1;
71cb9464 1726 }
70256ad8 1727
351f65ca
L
1728 if (! elf_x86_64_tls_transition (info, abfd, sec, NULL,
1729 symtab_hdr, sym_hashes,
1730 &r_type, GOT_UNKNOWN,
1731 rel, rel_end, h, r_symndx))
c2e61a4e 1732 return FALSE;
142411ca 1733
bffbf940 1734 switch (r_type)
70256ad8 1735 {
bffbf940
JJ
1736 case R_X86_64_TLSLD:
1737 htab->tls_ld_got.refcount += 1;
1738 goto create_got;
1739
1740 case R_X86_64_TPOFF32:
351f65ca 1741 if (!info->executable && ABI_64_P (abfd))
70256ad8 1742 {
09a24cbf 1743 if (h)
4c544807
L
1744 name = h->root.root.string;
1745 else
1746 name = bfd_elf_sym_name (abfd, symtab_hdr, isym,
1747 NULL);
bffbf940 1748 (*_bfd_error_handler)
d003868e
AM
1749 (_("%B: relocation %s against `%s' can not be used when making a shared object; recompile with -fPIC"),
1750 abfd,
4c544807 1751 x86_64_elf_howto_table[r_type].name, name);
bffbf940 1752 bfd_set_error (bfd_error_bad_value);
c2e61a4e 1753 return FALSE;
70256ad8 1754 }
bffbf940 1755 break;
c434dee6 1756
bffbf940 1757 case R_X86_64_GOTTPOFF:
1d85728f 1758 if (!info->executable)
bffbf940
JJ
1759 info->flags |= DF_STATIC_TLS;
1760 /* Fall through */
70256ad8 1761
bffbf940
JJ
1762 case R_X86_64_GOT32:
1763 case R_X86_64_GOTPCREL:
1764 case R_X86_64_TLSGD:
7b81dfbb
AJ
1765 case R_X86_64_GOT64:
1766 case R_X86_64_GOTPCREL64:
1767 case R_X86_64_GOTPLT64:
67a4f2b7
AO
1768 case R_X86_64_GOTPC32_TLSDESC:
1769 case R_X86_64_TLSDESC_CALL:
bffbf940
JJ
1770 /* This symbol requires a global offset table entry. */
1771 {
1772 int tls_type, old_tls_type;
1773
1774 switch (r_type)
1775 {
1776 default: tls_type = GOT_NORMAL; break;
1777 case R_X86_64_TLSGD: tls_type = GOT_TLS_GD; break;
1778 case R_X86_64_GOTTPOFF: tls_type = GOT_TLS_IE; break;
67a4f2b7
AO
1779 case R_X86_64_GOTPC32_TLSDESC:
1780 case R_X86_64_TLSDESC_CALL:
1781 tls_type = GOT_TLS_GDESC; break;
bffbf940
JJ
1782 }
1783
1784 if (h != NULL)
1785 {
1786 h->got.refcount += 1;
351f65ca 1787 old_tls_type = elf_x86_64_hash_entry (h)->tls_type;
bffbf940
JJ
1788 }
1789 else
1790 {
1791 bfd_signed_vma *local_got_refcounts;
1792
1793 /* This is a global offset table entry for a local symbol. */
1794 local_got_refcounts = elf_local_got_refcounts (abfd);
1795 if (local_got_refcounts == NULL)
1796 {
1797 bfd_size_type size;
1798
1799 size = symtab_hdr->sh_info;
67a4f2b7
AO
1800 size *= sizeof (bfd_signed_vma)
1801 + sizeof (bfd_vma) + sizeof (char);
bffbf940
JJ
1802 local_got_refcounts = ((bfd_signed_vma *)
1803 bfd_zalloc (abfd, size));
1804 if (local_got_refcounts == NULL)
c2e61a4e 1805 return FALSE;
bffbf940 1806 elf_local_got_refcounts (abfd) = local_got_refcounts;
351f65ca 1807 elf_x86_64_local_tlsdesc_gotent (abfd)
67a4f2b7 1808 = (bfd_vma *) (local_got_refcounts + symtab_hdr->sh_info);
351f65ca 1809 elf_x86_64_local_got_tls_type (abfd)
67a4f2b7 1810 = (char *) (local_got_refcounts + 2 * symtab_hdr->sh_info);
bffbf940
JJ
1811 }
1812 local_got_refcounts[r_symndx] += 1;
1813 old_tls_type
351f65ca 1814 = elf_x86_64_local_got_tls_type (abfd) [r_symndx];
bffbf940
JJ
1815 }
1816
1817 /* If a TLS symbol is accessed using IE at least once,
1818 there is no point to use dynamic model for it. */
1819 if (old_tls_type != tls_type && old_tls_type != GOT_UNKNOWN
67a4f2b7
AO
1820 && (! GOT_TLS_GD_ANY_P (old_tls_type)
1821 || tls_type != GOT_TLS_IE))
bffbf940 1822 {
67a4f2b7 1823 if (old_tls_type == GOT_TLS_IE && GOT_TLS_GD_ANY_P (tls_type))
bffbf940 1824 tls_type = old_tls_type;
67a4f2b7
AO
1825 else if (GOT_TLS_GD_ANY_P (old_tls_type)
1826 && GOT_TLS_GD_ANY_P (tls_type))
1827 tls_type |= old_tls_type;
bffbf940
JJ
1828 else
1829 {
09a24cbf 1830 if (h)
4c544807
L
1831 name = h->root.root.string;
1832 else
1833 name = bfd_elf_sym_name (abfd, symtab_hdr,
1834 isym, NULL);
bffbf940 1835 (*_bfd_error_handler)
1f7a4e42 1836 (_("%B: '%s' accessed both as normal and thread local symbol"),
4c544807 1837 abfd, name);
68c4a57e 1838 bfd_set_error (bfd_error_bad_value);
c2e61a4e 1839 return FALSE;
bffbf940
JJ
1840 }
1841 }
1842
1843 if (old_tls_type != tls_type)
1844 {
1845 if (h != NULL)
351f65ca 1846 elf_x86_64_hash_entry (h)->tls_type = tls_type;
bffbf940 1847 else
351f65ca 1848 elf_x86_64_local_got_tls_type (abfd) [r_symndx] = tls_type;
bffbf940
JJ
1849 }
1850 }
c434dee6
AJ
1851 /* Fall through */
1852
d6ab8113
JB
1853 case R_X86_64_GOTOFF64:
1854 case R_X86_64_GOTPC32:
7b81dfbb 1855 case R_X86_64_GOTPC64:
bffbf940 1856 create_got:
6de2ae4a 1857 if (htab->elf.sgot == NULL)
c434dee6
AJ
1858 {
1859 if (htab->elf.dynobj == NULL)
1860 htab->elf.dynobj = abfd;
6de2ae4a
L
1861 if (!_bfd_elf_create_got_section (htab->elf.dynobj,
1862 info))
c2e61a4e 1863 return FALSE;
c434dee6 1864 }
70256ad8
AJ
1865 break;
1866
1867 case R_X86_64_PLT32:
c3320543 1868 case R_X86_64_PLT32_BND:
70256ad8 1869 /* This symbol requires a procedure linkage table entry. We
407443a3
AJ
1870 actually build the entry in adjust_dynamic_symbol,
1871 because this might be a case of linking PIC code which is
1872 never referenced by a dynamic object, in which case we
1873 don't need to generate a procedure linkage table entry
1874 after all. */
70256ad8
AJ
1875
1876 /* If this is a local symbol, we resolve it directly without
407443a3 1877 creating a procedure linkage table entry. */
70256ad8
AJ
1878 if (h == NULL)
1879 continue;
1880
f5385ebf 1881 h->needs_plt = 1;
51b64d56 1882 h->plt.refcount += 1;
70256ad8
AJ
1883 break;
1884
7b81dfbb
AJ
1885 case R_X86_64_PLTOFF64:
1886 /* This tries to form the 'address' of a function relative
1887 to GOT. For global symbols we need a PLT entry. */
1888 if (h != NULL)
1889 {
1890 h->needs_plt = 1;
1891 h->plt.refcount += 1;
1892 }
1893 goto create_got;
1894
6a3e1bae
L
1895 case R_X86_64_SIZE32:
1896 case R_X86_64_SIZE64:
06a6a421 1897 size_reloc = TRUE;
6a3e1bae
L
1898 goto do_size;
1899
248775ba
L
1900 case R_X86_64_32:
1901 if (!ABI_64_P (abfd))
1902 goto pointer;
cc78d0af
AJ
1903 case R_X86_64_8:
1904 case R_X86_64_16:
70256ad8 1905 case R_X86_64_32S:
1b71fb54
AJ
1906 /* Let's help debug shared library creation. These relocs
1907 cannot be used in shared libs. Don't error out for
1908 sections we don't care about, such as debug sections or
1909 non-constant sections. */
1910 if (info->shared
1911 && (sec->flags & SEC_ALLOC) != 0
1912 && (sec->flags & SEC_READONLY) != 0)
1913 {
09a24cbf 1914 if (h)
4c544807
L
1915 name = h->root.root.string;
1916 else
1917 name = bfd_elf_sym_name (abfd, symtab_hdr, isym, NULL);
1b71fb54 1918 (*_bfd_error_handler)
d003868e 1919 (_("%B: relocation %s against `%s' can not be used when making a shared object; recompile with -fPIC"),
4c544807 1920 abfd, x86_64_elf_howto_table[r_type].name, name);
1b71fb54 1921 bfd_set_error (bfd_error_bad_value);
c2e61a4e 1922 return FALSE;
1b71fb54
AJ
1923 }
1924 /* Fall through. */
1925
c434dee6
AJ
1926 case R_X86_64_PC8:
1927 case R_X86_64_PC16:
70256ad8 1928 case R_X86_64_PC32:
c3320543 1929 case R_X86_64_PC32_BND:
d6ab8113 1930 case R_X86_64_PC64:
1b71fb54 1931 case R_X86_64_64:
248775ba 1932pointer:
710ab287 1933 if (h != NULL && info->executable)
c434dee6
AJ
1934 {
1935 /* If this reloc is in a read-only section, we might
1936 need a copy reloc. We can't check reliably at this
1937 stage whether the section is read-only, as input
1938 sections have not yet been mapped to output sections.
1939 Tentatively set the flag for now, and correct in
1940 adjust_dynamic_symbol. */
f5385ebf 1941 h->non_got_ref = 1;
c434dee6
AJ
1942
1943 /* We may need a .plt entry if the function this reloc
1944 refers to is in a shared lib. */
1945 h->plt.refcount += 1;
c3320543
L
1946 if (r_type != R_X86_64_PC32
1947 && r_type != R_X86_64_PC32_BND
1948 && r_type != R_X86_64_PC64)
f5385ebf 1949 h->pointer_equality_needed = 1;
c434dee6 1950 }
70256ad8 1951
06a6a421 1952 size_reloc = FALSE;
6a3e1bae 1953do_size:
70256ad8
AJ
1954 /* If we are creating a shared library, and this is a reloc
1955 against a global symbol, or a non PC relative reloc
1956 against a local symbol, then we need to copy the reloc
1957 into the shared library. However, if we are linking with
1958 -Bsymbolic, we do not need to copy a reloc against a
1959 global symbol which is defined in an object we are
407443a3 1960 including in the link (i.e., DEF_REGULAR is set). At
70256ad8
AJ
1961 this point we have not seen all the input files, so it is
1962 possible that DEF_REGULAR is not set now but will be set
c434dee6
AJ
1963 later (it is never cleared). In case of a weak definition,
1964 DEF_REGULAR may be cleared later by a strong definition in
1965 a shared library. We account for that possibility below by
1966 storing information in the relocs_copied field of the hash
1967 table entry. A similar situation occurs when creating
1968 shared libraries and symbol visibility changes render the
31c0ebfe 1969 symbol local.
c434dee6
AJ
1970
1971 If on the other hand, we are creating an executable, we
1972 may need to keep relocations for symbols satisfied by a
1973 dynamic library if we manage to avoid copy relocs for the
0f88be7a 1974 symbol. */
c434dee6
AJ
1975 if ((info->shared
1976 && (sec->flags & SEC_ALLOC) != 0
d8045f23 1977 && (! IS_X86_64_PCREL_TYPE (r_type)
c434dee6 1978 || (h != NULL
55255dae 1979 && (! SYMBOLIC_BIND (info, h)
c434dee6 1980 || h->root.type == bfd_link_hash_defweak
f5385ebf 1981 || !h->def_regular))))
d40d037c
AJ
1982 || (ELIMINATE_COPY_RELOCS
1983 && !info->shared
c434dee6
AJ
1984 && (sec->flags & SEC_ALLOC) != 0
1985 && h != NULL
1986 && (h->root.type == bfd_link_hash_defweak
0f88be7a 1987 || !h->def_regular)))
70256ad8 1988 {
e03a8ed8
L
1989 struct elf_dyn_relocs *p;
1990 struct elf_dyn_relocs **head;
c434dee6
AJ
1991
1992 /* We must copy these reloc types into the output file.
1993 Create a reloc section in dynobj and make room for
1994 this reloc. */
70256ad8
AJ
1995 if (sreloc == NULL)
1996 {
c434dee6
AJ
1997 if (htab->elf.dynobj == NULL)
1998 htab->elf.dynobj = abfd;
1999
83bac4b0 2000 sreloc = _bfd_elf_make_dynamic_reloc_section
82e96e07
L
2001 (sec, htab->elf.dynobj, ABI_64_P (abfd) ? 3 : 2,
2002 abfd, /*rela?*/ TRUE);
70256ad8 2003
70256ad8 2004 if (sreloc == NULL)
c2e61a4e 2005 return FALSE;
70256ad8
AJ
2006 }
2007
c434dee6
AJ
2008 /* If this is a global symbol, we count the number of
2009 relocations we need for this symbol. */
2010 if (h != NULL)
70256ad8 2011 {
351f65ca 2012 head = &((struct elf_x86_64_link_hash_entry *) h)->dyn_relocs;
c434dee6
AJ
2013 }
2014 else
2015 {
2016 /* Track dynamic relocs needed for local syms too.
2017 We really need local syms available to do this
2018 easily. Oh well. */
c434dee6 2019 asection *s;
87d72d41 2020 void **vpp;
87d72d41
AM
2021
2022 isym = bfd_sym_from_r_symndx (&htab->sym_cache,
2023 abfd, r_symndx);
2024 if (isym == NULL)
2025 return FALSE;
2026
2027 s = bfd_section_from_elf_index (abfd, isym->st_shndx);
c434dee6 2028 if (s == NULL)
87d72d41 2029 s = sec;
70256ad8 2030
e81d3500
DD
2031 /* Beware of type punned pointers vs strict aliasing
2032 rules. */
2033 vpp = &(elf_section_data (s)->local_dynrel);
e03a8ed8 2034 head = (struct elf_dyn_relocs **)vpp;
c434dee6 2035 }
70256ad8 2036
c434dee6
AJ
2037 p = *head;
2038 if (p == NULL || p->sec != sec)
2039 {
2040 bfd_size_type amt = sizeof *p;
d8045f23 2041
e03a8ed8 2042 p = ((struct elf_dyn_relocs *)
c434dee6 2043 bfd_alloc (htab->elf.dynobj, amt));
70256ad8 2044 if (p == NULL)
c2e61a4e 2045 return FALSE;
c434dee6
AJ
2046 p->next = *head;
2047 *head = p;
2048 p->sec = sec;
2049 p->count = 0;
2050 p->pc_count = 0;
70256ad8 2051 }
c434dee6
AJ
2052
2053 p->count += 1;
06a6a421
L
2054 /* Count size relocation as PC-relative relocation. */
2055 if (IS_X86_64_PCREL_TYPE (r_type) || size_reloc)
c434dee6 2056 p->pc_count += 1;
70256ad8
AJ
2057 }
2058 break;
fe4770f4
AJ
2059
2060 /* This relocation describes the C++ object vtable hierarchy.
2061 Reconstruct it for later use during GC. */
2062 case R_X86_64_GNU_VTINHERIT:
c152c796 2063 if (!bfd_elf_gc_record_vtinherit (abfd, sec, h, rel->r_offset))
c2e61a4e 2064 return FALSE;
fe4770f4
AJ
2065 break;
2066
2067 /* This relocation describes which C++ vtable entries are actually
2068 used. Record for later use during GC. */
2069 case R_X86_64_GNU_VTENTRY:
d17e0c6e
JB
2070 BFD_ASSERT (h != NULL);
2071 if (h != NULL
2072 && !bfd_elf_gc_record_vtentry (abfd, sec, h, rel->r_addend))
c2e61a4e 2073 return FALSE;
fe4770f4 2074 break;
c434dee6
AJ
2075
2076 default:
2077 break;
70256ad8 2078 }
dd7e64d4
L
2079
2080 if (use_plt_got
2081 && h != NULL
2082 && h->plt.refcount > 0
2083 && h->got.refcount > 0
2084 && htab->plt_got == NULL)
2085 {
2086 /* Create the GOT procedure linkage table. */
2087 unsigned int plt_got_align;
2088 const struct elf_backend_data *bed;
2089
2090 bed = get_elf_backend_data (info->output_bfd);
2091 BFD_ASSERT (sizeof (elf_x86_64_legacy_plt2_entry) == 8
2092 && (sizeof (elf_x86_64_bnd_plt2_entry)
2093 == sizeof (elf_x86_64_legacy_plt2_entry)));
2094 plt_got_align = 3;
2095
2096 if (htab->elf.dynobj == NULL)
2097 htab->elf.dynobj = abfd;
2098 htab->plt_got
2099 = bfd_make_section_anyway_with_flags (htab->elf.dynobj,
2100 ".plt.got",
2101 (bed->dynamic_sec_flags
2102 | SEC_ALLOC
2103 | SEC_CODE
2104 | SEC_LOAD
2105 | SEC_READONLY));
2106 if (htab->plt_got == NULL
2107 || !bfd_set_section_alignment (htab->elf.dynobj,
2108 htab->plt_got,
2109 plt_got_align))
2110 return FALSE;
2111 }
c1d11331
L
2112
2113 if (r_type == R_X86_64_GOTPCREL
2114 && (h == NULL || h->type != STT_GNU_IFUNC))
2115 sec->need_convert_mov_to_lea = 1;
70256ad8
AJ
2116 }
2117
b34976b6 2118 return TRUE;
70256ad8
AJ
2119}
2120
2121/* Return the section that should be marked against GC for a given
407443a3 2122 relocation. */
70256ad8
AJ
2123
2124static asection *
351f65ca
L
2125elf_x86_64_gc_mark_hook (asection *sec,
2126 struct bfd_link_info *info,
2127 Elf_Internal_Rela *rel,
2128 struct elf_link_hash_entry *h,
2129 Elf_Internal_Sym *sym)
70256ad8
AJ
2130{
2131 if (h != NULL)
351f65ca 2132 switch (ELF32_R_TYPE (rel->r_info))
07adf181
AM
2133 {
2134 case R_X86_64_GNU_VTINHERIT:
2135 case R_X86_64_GNU_VTENTRY:
2136 return NULL;
2137 }
2138
2139 return _bfd_elf_gc_mark_hook (sec, info, rel, h, sym);
70256ad8
AJ
2140}
2141
407443a3 2142/* Update the got entry reference counts for the section being removed. */
70256ad8 2143
b34976b6 2144static bfd_boolean
351f65ca
L
2145elf_x86_64_gc_sweep_hook (bfd *abfd, struct bfd_link_info *info,
2146 asection *sec,
2147 const Elf_Internal_Rela *relocs)
70256ad8 2148{
351f65ca 2149 struct elf_x86_64_link_hash_table *htab;
70256ad8
AJ
2150 Elf_Internal_Shdr *symtab_hdr;
2151 struct elf_link_hash_entry **sym_hashes;
2152 bfd_signed_vma *local_got_refcounts;
2153 const Elf_Internal_Rela *rel, *relend;
c434dee6 2154
7dda2462
TG
2155 if (info->relocatable)
2156 return TRUE;
2157
351f65ca 2158 htab = elf_x86_64_hash_table (info);
4dfe6ac6
NC
2159 if (htab == NULL)
2160 return FALSE;
2161
c434dee6 2162 elf_section_data (sec)->local_dynrel = NULL;
70256ad8 2163
0ffa91dd 2164 symtab_hdr = &elf_symtab_hdr (abfd);
70256ad8
AJ
2165 sym_hashes = elf_sym_hashes (abfd);
2166 local_got_refcounts = elf_local_got_refcounts (abfd);
2167
351f65ca 2168 htab = elf_x86_64_hash_table (info);
70256ad8
AJ
2169 relend = relocs + sec->reloc_count;
2170 for (rel = relocs; rel < relend; rel++)
26e41594
AM
2171 {
2172 unsigned long r_symndx;
2173 unsigned int r_type;
2174 struct elf_link_hash_entry *h = NULL;
70256ad8 2175
351f65ca 2176 r_symndx = htab->r_sym (rel->r_info);
26e41594
AM
2177 if (r_symndx >= symtab_hdr->sh_info)
2178 {
26e41594 2179 h = sym_hashes[r_symndx - symtab_hdr->sh_info];
3eb128b2
AM
2180 while (h->root.type == bfd_link_hash_indirect
2181 || h->root.type == bfd_link_hash_warning)
2182 h = (struct elf_link_hash_entry *) h->root.u.i.link;
26e41594 2183 }
bb1cb422
L
2184 else
2185 {
2186 /* A local symbol. */
2187 Elf_Internal_Sym *isym;
2188
2189 isym = bfd_sym_from_r_symndx (&htab->sym_cache,
2190 abfd, r_symndx);
2191
2192 /* Check relocation against local STT_GNU_IFUNC symbol. */
2193 if (isym != NULL
82e96e07 2194 && ELF_ST_TYPE (isym->st_info) == STT_GNU_IFUNC)
bb1cb422 2195 {
351f65ca 2196 h = elf_x86_64_get_local_sym_hash (htab, abfd, rel, FALSE);
bb1cb422
L
2197 if (h == NULL)
2198 abort ();
2199 }
2200 }
c434dee6 2201
3db2e7dd
L
2202 if (h)
2203 {
2204 struct elf_x86_64_link_hash_entry *eh;
2205 struct elf_dyn_relocs **pp;
2206 struct elf_dyn_relocs *p;
2207
2208 eh = (struct elf_x86_64_link_hash_entry *) h;
2209
2210 for (pp = &eh->dyn_relocs; (p = *pp) != NULL; pp = &p->next)
2211 if (p->sec == sec)
2212 {
2213 /* Everything must go for SEC. */
2214 *pp = p->next;
2215 break;
2216 }
2217 }
2218
351f65ca
L
2219 r_type = ELF32_R_TYPE (rel->r_info);
2220 if (! elf_x86_64_tls_transition (info, abfd, sec, NULL,
2221 symtab_hdr, sym_hashes,
2222 &r_type, GOT_UNKNOWN,
2223 rel, relend, h, r_symndx))
142411ca
L
2224 return FALSE;
2225
26e41594
AM
2226 switch (r_type)
2227 {
2228 case R_X86_64_TLSLD:
4dfe6ac6
NC
2229 if (htab->tls_ld_got.refcount > 0)
2230 htab->tls_ld_got.refcount -= 1;
26e41594 2231 break;
c434dee6 2232
26e41594 2233 case R_X86_64_TLSGD:
67a4f2b7
AO
2234 case R_X86_64_GOTPC32_TLSDESC:
2235 case R_X86_64_TLSDESC_CALL:
26e41594
AM
2236 case R_X86_64_GOTTPOFF:
2237 case R_X86_64_GOT32:
2238 case R_X86_64_GOTPCREL:
7b81dfbb
AJ
2239 case R_X86_64_GOT64:
2240 case R_X86_64_GOTPCREL64:
2241 case R_X86_64_GOTPLT64:
26e41594
AM
2242 if (h != NULL)
2243 {
2244 if (h->got.refcount > 0)
2245 h->got.refcount -= 1;
bb1cb422
L
2246 if (h->type == STT_GNU_IFUNC)
2247 {
2248 if (h->plt.refcount > 0)
2249 h->plt.refcount -= 1;
2250 }
26e41594
AM
2251 }
2252 else if (local_got_refcounts != NULL)
2253 {
2254 if (local_got_refcounts[r_symndx] > 0)
2255 local_got_refcounts[r_symndx] -= 1;
2256 }
2257 break;
c434dee6 2258
26e41594
AM
2259 case R_X86_64_8:
2260 case R_X86_64_16:
2261 case R_X86_64_32:
2262 case R_X86_64_64:
2263 case R_X86_64_32S:
2264 case R_X86_64_PC8:
2265 case R_X86_64_PC16:
2266 case R_X86_64_PC32:
c3320543 2267 case R_X86_64_PC32_BND:
d6ab8113 2268 case R_X86_64_PC64:
1788fc08
L
2269 case R_X86_64_SIZE32:
2270 case R_X86_64_SIZE64:
3db2e7dd
L
2271 if (info->shared
2272 && (h == NULL || h->type != STT_GNU_IFUNC))
26e41594
AM
2273 break;
2274 /* Fall thru */
c434dee6 2275
26e41594 2276 case R_X86_64_PLT32:
c3320543 2277 case R_X86_64_PLT32_BND:
7b81dfbb 2278 case R_X86_64_PLTOFF64:
26e41594
AM
2279 if (h != NULL)
2280 {
2281 if (h->plt.refcount > 0)
2282 h->plt.refcount -= 1;
2283 }
2284 break;
70256ad8 2285
26e41594
AM
2286 default:
2287 break;
2288 }
2289 }
70256ad8 2290
b34976b6 2291 return TRUE;
70256ad8
AJ
2292}
2293
2294/* Adjust a symbol defined by a dynamic object and referenced by a
2295 regular object. The current definition is in some section of the
2296 dynamic object, but we're not including those sections. We have to
2297 change the definition to something the rest of the link can
407443a3 2298 understand. */
70256ad8 2299
b34976b6 2300static bfd_boolean
351f65ca
L
2301elf_x86_64_adjust_dynamic_symbol (struct bfd_link_info *info,
2302 struct elf_link_hash_entry *h)
70256ad8 2303{
351f65ca 2304 struct elf_x86_64_link_hash_table *htab;
70256ad8 2305 asection *s;
5ca5bb35
L
2306 struct elf_x86_64_link_hash_entry *eh;
2307 struct elf_dyn_relocs *p;
70256ad8 2308
cbe950e9
L
2309 /* STT_GNU_IFUNC symbol must go through PLT. */
2310 if (h->type == STT_GNU_IFUNC)
2311 {
73bcf233
L
2312 /* All local STT_GNU_IFUNC references must be treate as local
2313 calls via local PLT. */
5ca5bb35
L
2314 if (h->ref_regular
2315 && SYMBOL_CALLS_LOCAL (info, h))
2316 {
73bcf233 2317 bfd_size_type pc_count = 0, count = 0;
5ca5bb35
L
2318 struct elf_dyn_relocs **pp;
2319
2320 eh = (struct elf_x86_64_link_hash_entry *) h;
2321 for (pp = &eh->dyn_relocs; (p = *pp) != NULL; )
2322 {
2323 pc_count += p->pc_count;
2324 p->count -= p->pc_count;
2325 p->pc_count = 0;
73bcf233 2326 count += p->count;
5ca5bb35
L
2327 if (p->count == 0)
2328 *pp = p->next;
2329 else
2330 pp = &p->next;
2331 }
2332
73bcf233 2333 if (pc_count || count)
5ca5bb35
L
2334 {
2335 h->needs_plt = 1;
5ca5bb35 2336 h->non_got_ref = 1;
a5479e5f
L
2337 if (h->plt.refcount <= 0)
2338 h->plt.refcount = 1;
2339 else
2340 h->plt.refcount += 1;
5ca5bb35
L
2341 }
2342 }
2343
cbe950e9
L
2344 if (h->plt.refcount <= 0)
2345 {
2346 h->plt.offset = (bfd_vma) -1;
2347 h->needs_plt = 0;
2348 }
2349 return TRUE;
2350 }
2351
70256ad8
AJ
2352 /* If this is a function, put it in the procedure linkage table. We
2353 will fill in the contents of the procedure linkage table later,
2354 when we know the address of the .got section. */
2355 if (h->type == STT_FUNC
f5385ebf 2356 || h->needs_plt)
70256ad8 2357 {
c434dee6 2358 if (h->plt.refcount <= 0
27482721
AJ
2359 || SYMBOL_CALLS_LOCAL (info, h)
2360 || (ELF_ST_VISIBILITY (h->other) != STV_DEFAULT
2361 && h->root.type == bfd_link_hash_undefweak))
70256ad8 2362 {
70256ad8
AJ
2363 /* This case can occur if we saw a PLT32 reloc in an input
2364 file, but the symbol was never referred to by a dynamic
2365 object, or if all references were garbage collected. In
2366 such a case, we don't actually need to build a procedure
2367 linkage table, and we can just do a PC32 reloc instead. */
70256ad8 2368 h->plt.offset = (bfd_vma) -1;
f5385ebf 2369 h->needs_plt = 0;
70256ad8
AJ
2370 }
2371
b34976b6 2372 return TRUE;
70256ad8 2373 }
bbd7ec4a 2374 else
c434dee6
AJ
2375 /* It's possible that we incorrectly decided a .plt reloc was
2376 needed for an R_X86_64_PC32 reloc to a non-function sym in
2377 check_relocs. We can't decide accurately between function and
2378 non-function syms in check-relocs; Objects loaded later in
2379 the link may change h->type. So fix it now. */
bbd7ec4a 2380 h->plt.offset = (bfd_vma) -1;
70256ad8
AJ
2381
2382 /* If this is a weak symbol, and there is a real definition, the
2383 processor independent code will have arranged for us to see the
407443a3 2384 real definition first, and we can just use the same value. */
f6e332e6 2385 if (h->u.weakdef != NULL)
70256ad8 2386 {
f6e332e6
AM
2387 BFD_ASSERT (h->u.weakdef->root.type == bfd_link_hash_defined
2388 || h->u.weakdef->root.type == bfd_link_hash_defweak);
2389 h->root.u.def.section = h->u.weakdef->root.u.def.section;
2390 h->root.u.def.value = h->u.weakdef->root.u.def.value;
d40d037c 2391 if (ELIMINATE_COPY_RELOCS || info->nocopyreloc)
bc696fd5
L
2392 {
2393 eh = (struct elf_x86_64_link_hash_entry *) h;
2394 h->non_got_ref = h->u.weakdef->non_got_ref;
2395 eh->needs_copy = h->u.weakdef->needs_copy;
2396 }
b34976b6 2397 return TRUE;
70256ad8
AJ
2398 }
2399
2400 /* This is a reference to a symbol defined by a dynamic object which
407443a3 2401 is not a function. */
70256ad8
AJ
2402
2403 /* If we are creating a shared library, we must presume that the
2404 only references to the symbol are via the global offset table.
2405 For such cases we need not do anything here; the relocations will
407443a3 2406 be handled correctly by relocate_section. */
9a926d55 2407 if (!info->executable)
b34976b6 2408 return TRUE;
70256ad8
AJ
2409
2410 /* If there are no references to this symbol that do not use the
2411 GOT, we don't need to generate a copy reloc. */
f5385ebf 2412 if (!h->non_got_ref)
b34976b6 2413 return TRUE;
70256ad8 2414
c434dee6
AJ
2415 /* If -z nocopyreloc was given, we won't generate them either. */
2416 if (info->nocopyreloc)
2417 {
f5385ebf 2418 h->non_got_ref = 0;
b34976b6 2419 return TRUE;
c434dee6
AJ
2420 }
2421
31c0ebfe 2422 if (ELIMINATE_COPY_RELOCS)
c434dee6 2423 {
351f65ca 2424 eh = (struct elf_x86_64_link_hash_entry *) h;
d40d037c
AJ
2425 for (p = eh->dyn_relocs; p != NULL; p = p->next)
2426 {
2427 s = p->sec->output_section;
2428 if (s != NULL && (s->flags & SEC_READONLY) != 0)
2429 break;
2430 }
2431
2432 /* If we didn't find any dynamic relocs in read-only sections, then
2433 we'll be keeping the dynamic relocs and avoiding the copy reloc. */
2434 if (p == NULL)
2435 {
f5385ebf 2436 h->non_got_ref = 0;
d40d037c
AJ
2437 return TRUE;
2438 }
c434dee6
AJ
2439 }
2440
70256ad8 2441 /* We must allocate the symbol in our .dynbss section, which will
407443a3 2442 become part of the .bss section of the executable. There will be
70256ad8
AJ
2443 an entry for this symbol in the .dynsym section. The dynamic
2444 object will contain position independent code, so all references
2445 from the dynamic object to this symbol will go through the global
2446 offset table. The dynamic linker will use the .dynsym entry to
2447 determine the address it must put in the global offset table, so
2448 both the dynamic object and the regular object will refer to the
2449 same memory location for the variable. */
2450
351f65ca 2451 htab = elf_x86_64_hash_table (info);
4dfe6ac6
NC
2452 if (htab == NULL)
2453 return FALSE;
70256ad8
AJ
2454
2455 /* We must generate a R_X86_64_COPY reloc to tell the dynamic linker
2456 to copy the initial value out of the dynamic object and into the
cedb70c5 2457 runtime process image. */
1d7e9d18 2458 if ((h->root.u.def.section->flags & SEC_ALLOC) != 0 && h->size != 0)
70256ad8 2459 {
351f65ca
L
2460 const struct elf_backend_data *bed;
2461 bed = get_elf_backend_data (info->output_bfd);
2462 htab->srelbss->size += bed->s->sizeof_rela;
f5385ebf 2463 h->needs_copy = 1;
70256ad8
AJ
2464 }
2465
c434dee6 2466 s = htab->sdynbss;
70256ad8 2467
6cabe1ea 2468 return _bfd_elf_adjust_dynamic_copy (info, h, s);
70256ad8
AJ
2469}
2470
c434dee6
AJ
2471/* Allocate space in .plt, .got and associated reloc sections for
2472 dynamic relocs. */
2473
b34976b6 2474static bfd_boolean
351f65ca 2475elf_x86_64_allocate_dynrelocs (struct elf_link_hash_entry *h, void * inf)
c434dee6
AJ
2476{
2477 struct bfd_link_info *info;
351f65ca
L
2478 struct elf_x86_64_link_hash_table *htab;
2479 struct elf_x86_64_link_hash_entry *eh;
e03a8ed8 2480 struct elf_dyn_relocs *p;
351f65ca 2481 const struct elf_backend_data *bed;
eed180f8 2482 unsigned int plt_entry_size;
c434dee6 2483
e92d460e 2484 if (h->root.type == bfd_link_hash_indirect)
b34976b6 2485 return TRUE;
c434dee6 2486
351f65ca 2487 eh = (struct elf_x86_64_link_hash_entry *) h;
e92d460e 2488
c434dee6 2489 info = (struct bfd_link_info *) inf;
351f65ca 2490 htab = elf_x86_64_hash_table (info);
4dfe6ac6
NC
2491 if (htab == NULL)
2492 return FALSE;
351f65ca 2493 bed = get_elf_backend_data (info->output_bfd);
eed180f8 2494 plt_entry_size = GET_PLT_ENTRY_SIZE (info->output_bfd);
c434dee6 2495
dd7e64d4
L
2496 /* We can't use the GOT PLT if pointer equality is needed since
2497 finish_dynamic_symbol won't clear symbol value and the dynamic
2498 linker won't update the GOT slot. We will get into an infinite
2499 loop at run-time. */
2500 if (htab->plt_got != NULL
2501 && h->type != STT_GNU_IFUNC
2502 && !h->pointer_equality_needed
2503 && h->plt.refcount > 0
2504 && h->got.refcount > 0)
2505 {
2506 /* Don't use the regular PLT if there are both GOT and GOTPLT
2507 reloctions. */
2508 h->plt.offset = (bfd_vma) -1;
2509
2510 /* Use the GOT PLT. */
2511 eh->plt_got.refcount = 1;
2512 }
2513
cbe950e9
L
2514 /* Since STT_GNU_IFUNC symbol must go through PLT, we handle it
2515 here if it is defined and referenced in a non-shared object. */
2516 if (h->type == STT_GNU_IFUNC
2517 && h->def_regular)
0ff2b86e
L
2518 {
2519 if (_bfd_elf_allocate_ifunc_dyn_relocs (info, h,
2520 &eh->dyn_relocs,
2521 plt_entry_size,
2522 plt_entry_size,
2523 GOT_ENTRY_SIZE))
2524 {
2525 asection *s = htab->plt_bnd;
2526 if (h->plt.offset != (bfd_vma) -1 && s != NULL)
2527 {
2528 /* Use the .plt.bnd section if it is created. */
2529 eh->plt_bnd.offset = s->size;
2530
2531 /* Make room for this entry in the .plt.bnd section. */
2532 s->size += sizeof (elf_x86_64_legacy_plt2_entry);
2533 }
2534
2535 return TRUE;
2536 }
2537 else
2538 return FALSE;
2539 }
cbe950e9 2540 else if (htab->elf.dynamic_sections_created
dd7e64d4 2541 && (h->plt.refcount > 0 || eh->plt_got.refcount > 0))
c434dee6 2542 {
dd7e64d4
L
2543 bfd_boolean use_plt_got = eh->plt_got.refcount > 0;
2544
c434dee6
AJ
2545 /* Make sure this symbol is output as a dynamic symbol.
2546 Undefined weak syms won't yet be marked as dynamic. */
2547 if (h->dynindx == -1
f5385ebf 2548 && !h->forced_local)
c434dee6 2549 {
c152c796 2550 if (! bfd_elf_link_record_dynamic_symbol (info, h))
b34976b6 2551 return FALSE;
c434dee6
AJ
2552 }
2553
27482721
AJ
2554 if (info->shared
2555 || WILL_CALL_FINISH_DYNAMIC_SYMBOL (1, 0, h))
c434dee6 2556 {
6de2ae4a 2557 asection *s = htab->elf.splt;
0ff2b86e 2558 asection *bnd_s = htab->plt_bnd;
dd7e64d4 2559 asection *got_s = htab->plt_got;
c434dee6
AJ
2560
2561 /* If this is the first .plt entry, make room for the special
2562 first entry. */
eea6121a 2563 if (s->size == 0)
bb81b736 2564 s->size = plt_entry_size;
c434dee6 2565
dd7e64d4
L
2566 if (use_plt_got)
2567 eh->plt_got.offset = got_s->size;
2568 else
2569 {
2570 h->plt.offset = s->size;
2571 if (bnd_s)
2572 eh->plt_bnd.offset = bnd_s->size;
2573 }
c434dee6
AJ
2574
2575 /* If this symbol is not defined in a regular file, and we are
2576 not generating a shared library, then set the symbol to this
2577 location in the .plt. This is required to make function
2578 pointers compare as equal between the normal executable and
2579 the shared library. */
2580 if (! info->shared
f5385ebf 2581 && !h->def_regular)
c434dee6 2582 {
dd7e64d4 2583 if (use_plt_got)
0ff2b86e 2584 {
dd7e64d4
L
2585 /* We need to make a call to the entry of the GOT PLT
2586 instead of regular PLT entry. */
2587 h->root.u.def.section = got_s;
2588 h->root.u.def.value = eh->plt_got.offset;
0ff2b86e
L
2589 }
2590 else
2591 {
dd7e64d4
L
2592 if (bnd_s)
2593 {
2594 /* We need to make a call to the entry of the second
2595 PLT instead of regular PLT entry. */
2596 h->root.u.def.section = bnd_s;
2597 h->root.u.def.value = eh->plt_bnd.offset;
2598 }
2599 else
2600 {
2601 h->root.u.def.section = s;
2602 h->root.u.def.value = h->plt.offset;
2603 }
0ff2b86e 2604 }
c434dee6
AJ
2605 }
2606
2607 /* Make room for this entry. */
dd7e64d4
L
2608 if (use_plt_got)
2609 got_s->size += sizeof (elf_x86_64_legacy_plt2_entry);
2610 else
2611 {
2612 s->size += plt_entry_size;
2613 if (bnd_s)
2614 bnd_s->size += sizeof (elf_x86_64_legacy_plt2_entry);
c434dee6 2615
dd7e64d4
L
2616 /* We also need to make an entry in the .got.plt section,
2617 which will be placed in the .got section by the linker
2618 script. */
2619 htab->elf.sgotplt->size += GOT_ENTRY_SIZE;
c434dee6 2620
dd7e64d4
L
2621 /* We also need to make an entry in the .rela.plt
2622 section. */
2623 htab->elf.srelplt->size += bed->s->sizeof_rela;
2624 htab->elf.srelplt->reloc_count++;
2625 }
c434dee6
AJ
2626 }
2627 else
2628 {
2629 h->plt.offset = (bfd_vma) -1;
f5385ebf 2630 h->needs_plt = 0;
c434dee6
AJ
2631 }
2632 }
2633 else
2634 {
2635 h->plt.offset = (bfd_vma) -1;
f5385ebf 2636 h->needs_plt = 0;
c434dee6
AJ
2637 }
2638
67a4f2b7
AO
2639 eh->tlsdesc_got = (bfd_vma) -1;
2640
bffbf940
JJ
2641 /* If R_X86_64_GOTTPOFF symbol is now local to the binary,
2642 make it a R_X86_64_TPOFF32 requiring no GOT entry. */
2643 if (h->got.refcount > 0
1d85728f 2644 && info->executable
bffbf940 2645 && h->dynindx == -1
351f65ca 2646 && elf_x86_64_hash_entry (h)->tls_type == GOT_TLS_IE)
d8045f23
NC
2647 {
2648 h->got.offset = (bfd_vma) -1;
2649 }
bffbf940 2650 else if (h->got.refcount > 0)
c434dee6
AJ
2651 {
2652 asection *s;
b34976b6 2653 bfd_boolean dyn;
351f65ca 2654 int tls_type = elf_x86_64_hash_entry (h)->tls_type;
c434dee6
AJ
2655
2656 /* Make sure this symbol is output as a dynamic symbol.
2657 Undefined weak syms won't yet be marked as dynamic. */
2658 if (h->dynindx == -1
f5385ebf 2659 && !h->forced_local)
c434dee6 2660 {
c152c796 2661 if (! bfd_elf_link_record_dynamic_symbol (info, h))
b34976b6 2662 return FALSE;
c434dee6
AJ
2663 }
2664
67a4f2b7
AO
2665 if (GOT_TLS_GDESC_P (tls_type))
2666 {
6de2ae4a 2667 eh->tlsdesc_got = htab->elf.sgotplt->size
351f65ca 2668 - elf_x86_64_compute_jump_table_size (htab);
6de2ae4a 2669 htab->elf.sgotplt->size += 2 * GOT_ENTRY_SIZE;
67a4f2b7
AO
2670 h->got.offset = (bfd_vma) -2;
2671 }
2672 if (! GOT_TLS_GDESC_P (tls_type)
2673 || GOT_TLS_GD_P (tls_type))
2674 {
6de2ae4a 2675 s = htab->elf.sgot;
67a4f2b7
AO
2676 h->got.offset = s->size;
2677 s->size += GOT_ENTRY_SIZE;
2678 if (GOT_TLS_GD_P (tls_type))
2679 s->size += GOT_ENTRY_SIZE;
2680 }
c434dee6 2681 dyn = htab->elf.dynamic_sections_created;
bffbf940
JJ
2682 /* R_X86_64_TLSGD needs one dynamic relocation if local symbol
2683 and two if global.
2684 R_X86_64_GOTTPOFF needs one dynamic relocation. */
67a4f2b7 2685 if ((GOT_TLS_GD_P (tls_type) && h->dynindx == -1)
bffbf940 2686 || tls_type == GOT_TLS_IE)
351f65ca 2687 htab->elf.srelgot->size += bed->s->sizeof_rela;
67a4f2b7 2688 else if (GOT_TLS_GD_P (tls_type))
351f65ca 2689 htab->elf.srelgot->size += 2 * bed->s->sizeof_rela;
67a4f2b7
AO
2690 else if (! GOT_TLS_GDESC_P (tls_type)
2691 && (ELF_ST_VISIBILITY (h->other) == STV_DEFAULT
2692 || h->root.type != bfd_link_hash_undefweak)
27482721
AJ
2693 && (info->shared
2694 || WILL_CALL_FINISH_DYNAMIC_SYMBOL (dyn, 0, h)))
351f65ca 2695 htab->elf.srelgot->size += bed->s->sizeof_rela;
67a4f2b7
AO
2696 if (GOT_TLS_GDESC_P (tls_type))
2697 {
351f65ca 2698 htab->elf.srelplt->size += bed->s->sizeof_rela;
67a4f2b7
AO
2699 htab->tlsdesc_plt = (bfd_vma) -1;
2700 }
c434dee6
AJ
2701 }
2702 else
2703 h->got.offset = (bfd_vma) -1;
2704
c434dee6 2705 if (eh->dyn_relocs == NULL)
b34976b6 2706 return TRUE;
c434dee6
AJ
2707
2708 /* In the shared -Bsymbolic case, discard space allocated for
2709 dynamic pc-relative relocs against symbols which turn out to be
2710 defined in regular objects. For the normal shared case, discard
2711 space for pc-relative relocs that have become local due to symbol
2712 visibility changes. */
2713
2714 if (info->shared)
2715 {
27482721
AJ
2716 /* Relocs that use pc_count are those that appear on a call
2717 insn, or certain REL relocs that can generated via assembly.
2718 We want calls to protected symbols to resolve directly to the
2719 function rather than going via the plt. If people want
2720 function pointer comparisons to work as expected then they
2721 should avoid writing weird assembly. */
2722 if (SYMBOL_CALLS_LOCAL (info, h))
c434dee6 2723 {
e03a8ed8 2724 struct elf_dyn_relocs **pp;
c434dee6
AJ
2725
2726 for (pp = &eh->dyn_relocs; (p = *pp) != NULL; )
2727 {
c3ce498c
L
2728 p->count -= p->pc_count;
2729 p->pc_count = 0;
c434dee6
AJ
2730 if (p->count == 0)
2731 *pp = p->next;
2732 else
2733 pp = &p->next;
2734 }
2735 }
4e795f50
AM
2736
2737 /* Also discard relocs on undefined weak syms with non-default
c353e543 2738 visibility. */
31c0ebfe 2739 if (eh->dyn_relocs != NULL)
22d606e9 2740 {
31c0ebfe
L
2741 if (h->root.type == bfd_link_hash_undefweak)
2742 {
2743 if (ELF_ST_VISIBILITY (h->other) != STV_DEFAULT)
2744 eh->dyn_relocs = NULL;
2745
2746 /* Make sure undefined weak symbols are output as a dynamic
2747 symbol in PIEs. */
2748 else if (h->dynindx == -1
2749 && ! h->forced_local
2750 && ! bfd_elf_link_record_dynamic_symbol (info, h))
2751 return FALSE;
2752 }
9d1d54d5
L
2753 /* For PIE, discard space for pc-relative relocs against
2754 symbols which turn out to need copy relocs. */
31c0ebfe 2755 else if (info->executable
bc696fd5 2756 && (h->needs_copy || eh->needs_copy)
31c0ebfe
L
2757 && h->def_dynamic
2758 && !h->def_regular)
9d1d54d5
L
2759 {
2760 struct elf_dyn_relocs **pp;
2761
2762 for (pp = &eh->dyn_relocs; (p = *pp) != NULL; )
2763 {
2764 if (p->pc_count != 0)
2765 *pp = p->next;
2766 else
2767 pp = &p->next;
2768 }
2769 }
22d606e9 2770 }
d8045f23 2771 }
d40d037c 2772 else if (ELIMINATE_COPY_RELOCS)
c434dee6
AJ
2773 {
2774 /* For the non-shared case, discard space for relocs against
2775 symbols which turn out to need copy relocs or are not
2776 dynamic. */
2777
f5385ebf
AM
2778 if (!h->non_got_ref
2779 && ((h->def_dynamic
2780 && !h->def_regular)
c434dee6
AJ
2781 || (htab->elf.dynamic_sections_created
2782 && (h->root.type == bfd_link_hash_undefweak
2783 || h->root.type == bfd_link_hash_undefined))))
2784 {
2785 /* Make sure this symbol is output as a dynamic symbol.
2786 Undefined weak syms won't yet be marked as dynamic. */
2787 if (h->dynindx == -1
d8045f23
NC
2788 && ! h->forced_local
2789 && ! bfd_elf_link_record_dynamic_symbol (info, h))
2790 return FALSE;
c434dee6
AJ
2791
2792 /* If that succeeded, we know we'll be keeping all the
2793 relocs. */
2794 if (h->dynindx != -1)
2795 goto keep;
2796 }
2797
2798 eh->dyn_relocs = NULL;
2799
2800 keep: ;
2801 }
2802
2803 /* Finally, allocate space. */
2804 for (p = eh->dyn_relocs; p != NULL; p = p->next)
2805 {
e7c33416
NC
2806 asection * sreloc;
2807
cbe950e9 2808 sreloc = elf_section_data (p->sec)->sreloc;
e7c33416
NC
2809
2810 BFD_ASSERT (sreloc != NULL);
2811
351f65ca 2812 sreloc->size += p->count * bed->s->sizeof_rela;
c434dee6
AJ
2813 }
2814
b34976b6 2815 return TRUE;
c434dee6
AJ
2816}
2817
c25bc9fc
L
2818/* Allocate space in .plt, .got and associated reloc sections for
2819 local dynamic relocs. */
2820
2821static bfd_boolean
351f65ca 2822elf_x86_64_allocate_local_dynrelocs (void **slot, void *inf)
c25bc9fc
L
2823{
2824 struct elf_link_hash_entry *h
2825 = (struct elf_link_hash_entry *) *slot;
2826
2827 if (h->type != STT_GNU_IFUNC
2828 || !h->def_regular
2829 || !h->ref_regular
2830 || !h->forced_local
2831 || h->root.type != bfd_link_hash_defined)
2832 abort ();
2833
351f65ca 2834 return elf_x86_64_allocate_dynrelocs (h, inf);
c25bc9fc
L
2835}
2836
c434dee6
AJ
2837/* Find any dynamic relocs that apply to read-only sections. */
2838
b34976b6 2839static bfd_boolean
351f65ca
L
2840elf_x86_64_readonly_dynrelocs (struct elf_link_hash_entry *h,
2841 void * inf)
c434dee6 2842{
351f65ca 2843 struct elf_x86_64_link_hash_entry *eh;
e03a8ed8 2844 struct elf_dyn_relocs *p;
c434dee6 2845
aa715242
L
2846 /* Skip local IFUNC symbols. */
2847 if (h->forced_local && h->type == STT_GNU_IFUNC)
2848 return TRUE;
2849
351f65ca 2850 eh = (struct elf_x86_64_link_hash_entry *) h;
c434dee6
AJ
2851 for (p = eh->dyn_relocs; p != NULL; p = p->next)
2852 {
2853 asection *s = p->sec->output_section;
2854
2855 if (s != NULL && (s->flags & SEC_READONLY) != 0)
2856 {
2857 struct bfd_link_info *info = (struct bfd_link_info *) inf;
2858
2859 info->flags |= DF_TEXTREL;
2860
1952c5cd
L
2861 if ((info->warn_shared_textrel && info->shared)
2862 || info->error_textrel)
2863 info->callbacks->einfo (_("%P: %B: warning: relocation against `%s' in readonly section `%A'\n"),
b70321a2
L
2864 p->sec->owner, h->root.root.string,
2865 p->sec);
2866
c434dee6 2867 /* Not an error, just cut short the traversal. */
b34976b6 2868 return FALSE;
c434dee6
AJ
2869 }
2870 }
b34976b6 2871 return TRUE;
c434dee6
AJ
2872}
2873
daa67607
L
2874/* Convert
2875 mov foo@GOTPCREL(%rip), %reg
2876 to
2877 lea foo(%rip), %reg
2878 with the local symbol, foo. */
2879
2880static bfd_boolean
2881elf_x86_64_convert_mov_to_lea (bfd *abfd, asection *sec,
2882 struct bfd_link_info *link_info)
2883{
2884 Elf_Internal_Shdr *symtab_hdr;
2885 Elf_Internal_Rela *internal_relocs;
2886 Elf_Internal_Rela *irel, *irelend;
2887 bfd_byte *contents;
2888 struct elf_x86_64_link_hash_table *htab;
2889 bfd_boolean changed_contents;
2890 bfd_boolean changed_relocs;
2891 bfd_signed_vma *local_got_refcounts;
2892
2893 /* Don't even try to convert non-ELF outputs. */
2894 if (!is_elf_hash_table (link_info->hash))
2895 return FALSE;
2896
c1d11331 2897 /* Nothing to do if there is no need or no output. */
daa67607 2898 if ((sec->flags & (SEC_CODE | SEC_RELOC)) != (SEC_CODE | SEC_RELOC)
c1d11331 2899 || sec->need_convert_mov_to_lea == 0
c8831961 2900 || bfd_is_abs_section (sec->output_section))
daa67607
L
2901 return TRUE;
2902
2903 symtab_hdr = &elf_tdata (abfd)->symtab_hdr;
2904
2905 /* Load the relocations for this section. */
2906 internal_relocs = (_bfd_elf_link_read_relocs
2907 (abfd, sec, NULL, (Elf_Internal_Rela *) NULL,
2908 link_info->keep_memory));
2909 if (internal_relocs == NULL)
2910 return FALSE;
2911
2912 htab = elf_x86_64_hash_table (link_info);
2913 changed_contents = FALSE;
2914 changed_relocs = FALSE;
2915 local_got_refcounts = elf_local_got_refcounts (abfd);
2916
2917 /* Get the section contents. */
2918 if (elf_section_data (sec)->this_hdr.contents != NULL)
2919 contents = elf_section_data (sec)->this_hdr.contents;
2920 else
2921 {
2922 if (!bfd_malloc_and_get_section (abfd, sec, &contents))
2923 goto error_return;
2924 }
2925
2926 irelend = internal_relocs + sec->reloc_count;
2927 for (irel = internal_relocs; irel < irelend; irel++)
2928 {
2929 unsigned int r_type = ELF32_R_TYPE (irel->r_info);
2930 unsigned int r_symndx = htab->r_sym (irel->r_info);
2931 unsigned int indx;
2932 struct elf_link_hash_entry *h;
2933
2934 if (r_type != R_X86_64_GOTPCREL)
2935 continue;
2936
2937 /* Get the symbol referred to by the reloc. */
2938 if (r_symndx < symtab_hdr->sh_info)
2939 {
2940 Elf_Internal_Sym *isym;
2941
2942 isym = bfd_sym_from_r_symndx (&htab->sym_cache,
2943 abfd, r_symndx);
2944
2945 /* STT_GNU_IFUNC must keep R_X86_64_GOTPCREL relocation. */
2946 if (ELF_ST_TYPE (isym->st_info) != STT_GNU_IFUNC
5697705a 2947 && irel->r_offset >= 2
daa67607
L
2948 && bfd_get_8 (input_bfd,
2949 contents + irel->r_offset - 2) == 0x8b)
2950 {
2951 bfd_put_8 (output_bfd, 0x8d,
2952 contents + irel->r_offset - 2);
2953 irel->r_info = htab->r_info (r_symndx, R_X86_64_PC32);
2954 if (local_got_refcounts != NULL
2955 && local_got_refcounts[r_symndx] > 0)
2956 local_got_refcounts[r_symndx] -= 1;
2957 changed_contents = TRUE;
2958 changed_relocs = TRUE;
2959 }
2960 continue;
2961 }
2962
2963 indx = r_symndx - symtab_hdr->sh_info;
2964 h = elf_sym_hashes (abfd)[indx];
2965 BFD_ASSERT (h != NULL);
2966
2967 while (h->root.type == bfd_link_hash_indirect
2968 || h->root.type == bfd_link_hash_warning)
2969 h = (struct elf_link_hash_entry *) h->root.u.i.link;
2970
3f65f599
L
2971 /* STT_GNU_IFUNC must keep R_X86_64_GOTPCREL relocation. We also
2972 avoid optimizing _DYNAMIC since ld.so may use its link-time
2973 address. */
daa67607
L
2974 if (h->def_regular
2975 && h->type != STT_GNU_IFUNC
9637f6ef 2976 && h != htab->elf.hdynamic
daa67607 2977 && SYMBOL_REFERENCES_LOCAL (link_info, h)
5697705a 2978 && irel->r_offset >= 2
daa67607
L
2979 && bfd_get_8 (input_bfd,
2980 contents + irel->r_offset - 2) == 0x8b)
2981 {
2982 bfd_put_8 (output_bfd, 0x8d,
2983 contents + irel->r_offset - 2);
2984 irel->r_info = htab->r_info (r_symndx, R_X86_64_PC32);
2985 if (h->got.refcount > 0)
2986 h->got.refcount -= 1;
2987 changed_contents = TRUE;
2988 changed_relocs = TRUE;
2989 }
2990 }
2991
2992 if (contents != NULL
2993 && elf_section_data (sec)->this_hdr.contents != contents)
2994 {
2995 if (!changed_contents && !link_info->keep_memory)
2996 free (contents);
2997 else
2998 {
2999 /* Cache the section contents for elf_link_input_bfd. */
3000 elf_section_data (sec)->this_hdr.contents = contents;
3001 }
3002 }
3003
3004 if (elf_section_data (sec)->relocs != internal_relocs)
3005 {
3006 if (!changed_relocs)
3007 free (internal_relocs);
3008 else
3009 elf_section_data (sec)->relocs = internal_relocs;
3010 }
3011
3012 return TRUE;
3013
3014 error_return:
3015 if (contents != NULL
3016 && elf_section_data (sec)->this_hdr.contents != contents)
3017 free (contents);
3018 if (internal_relocs != NULL
3019 && elf_section_data (sec)->relocs != internal_relocs)
3020 free (internal_relocs);
3021 return FALSE;
3022}
3023
70256ad8
AJ
3024/* Set the sizes of the dynamic sections. */
3025
b34976b6 3026static bfd_boolean
351f65ca
L
3027elf_x86_64_size_dynamic_sections (bfd *output_bfd,
3028 struct bfd_link_info *info)
70256ad8 3029{
351f65ca 3030 struct elf_x86_64_link_hash_table *htab;
70256ad8
AJ
3031 bfd *dynobj;
3032 asection *s;
b34976b6 3033 bfd_boolean relocs;
c434dee6 3034 bfd *ibfd;
351f65ca 3035 const struct elf_backend_data *bed;
70256ad8 3036
351f65ca 3037 htab = elf_x86_64_hash_table (info);
4dfe6ac6
NC
3038 if (htab == NULL)
3039 return FALSE;
351f65ca 3040 bed = get_elf_backend_data (output_bfd);
4dfe6ac6 3041
c434dee6
AJ
3042 dynobj = htab->elf.dynobj;
3043 if (dynobj == NULL)
3044 abort ();
70256ad8 3045
c434dee6 3046 if (htab->elf.dynamic_sections_created)
70256ad8
AJ
3047 {
3048 /* Set the contents of the .interp section to the interpreter. */
36af4a4e 3049 if (info->executable)
70256ad8 3050 {
3d4d4302 3051 s = bfd_get_linker_section (dynobj, ".interp");
c434dee6
AJ
3052 if (s == NULL)
3053 abort ();
351f65ca
L
3054 s->size = htab->dynamic_interpreter_size;
3055 s->contents = (unsigned char *) htab->dynamic_interpreter;
70256ad8
AJ
3056 }
3057 }
70256ad8 3058
c434dee6
AJ
3059 /* Set up .got offsets for local syms, and space for local dynamic
3060 relocs. */
c72f2fb2 3061 for (ibfd = info->input_bfds; ibfd != NULL; ibfd = ibfd->link.next)
70256ad8 3062 {
c434dee6
AJ
3063 bfd_signed_vma *local_got;
3064 bfd_signed_vma *end_local_got;
bffbf940 3065 char *local_tls_type;
67a4f2b7 3066 bfd_vma *local_tlsdesc_gotent;
c434dee6
AJ
3067 bfd_size_type locsymcount;
3068 Elf_Internal_Shdr *symtab_hdr;
3069 asection *srel;
70256ad8 3070
0ffa91dd 3071 if (! is_x86_64_elf (ibfd))
70256ad8
AJ
3072 continue;
3073
c434dee6 3074 for (s = ibfd->sections; s != NULL; s = s->next)
70256ad8 3075 {
e03a8ed8 3076 struct elf_dyn_relocs *p;
c434dee6 3077
daa67607
L
3078 if (!elf_x86_64_convert_mov_to_lea (ibfd, s, info))
3079 return FALSE;
3080
e03a8ed8 3081 for (p = (struct elf_dyn_relocs *)
e81d3500 3082 (elf_section_data (s)->local_dynrel);
c434dee6
AJ
3083 p != NULL;
3084 p = p->next)
70256ad8 3085 {
c434dee6
AJ
3086 if (!bfd_is_abs_section (p->sec)
3087 && bfd_is_abs_section (p->sec->output_section))
3088 {
3089 /* Input section has been discarded, either because
3090 it is a copy of a linkonce section or due to
3091 linker script /DISCARD/, so we'll be discarding
3092 the relocs too. */
3093 }
3094 else if (p->count != 0)
3095 {
3096 srel = elf_section_data (p->sec)->sreloc;
351f65ca 3097 srel->size += p->count * bed->s->sizeof_rela;
4b819e1f
L
3098 if ((p->sec->output_section->flags & SEC_READONLY) != 0
3099 && (info->flags & DF_TEXTREL) == 0)
b70321a2
L
3100 {
3101 info->flags |= DF_TEXTREL;
1952c5cd
L
3102 if ((info->warn_shared_textrel && info->shared)
3103 || info->error_textrel)
3104 info->callbacks->einfo (_("%P: %B: warning: relocation in readonly section `%A'\n"),
b70321a2 3105 p->sec->owner, p->sec);
b70321a2 3106 }
c434dee6 3107 }
70256ad8
AJ
3108 }
3109 }
c434dee6
AJ
3110
3111 local_got = elf_local_got_refcounts (ibfd);
3112 if (!local_got)
3113 continue;
3114
0ffa91dd 3115 symtab_hdr = &elf_symtab_hdr (ibfd);
c434dee6
AJ
3116 locsymcount = symtab_hdr->sh_info;
3117 end_local_got = local_got + locsymcount;
351f65ca
L
3118 local_tls_type = elf_x86_64_local_got_tls_type (ibfd);
3119 local_tlsdesc_gotent = elf_x86_64_local_tlsdesc_gotent (ibfd);
6de2ae4a
L
3120 s = htab->elf.sgot;
3121 srel = htab->elf.srelgot;
67a4f2b7
AO
3122 for (; local_got < end_local_got;
3123 ++local_got, ++local_tls_type, ++local_tlsdesc_gotent)
70256ad8 3124 {
67a4f2b7 3125 *local_tlsdesc_gotent = (bfd_vma) -1;
c434dee6 3126 if (*local_got > 0)
70256ad8 3127 {
67a4f2b7
AO
3128 if (GOT_TLS_GDESC_P (*local_tls_type))
3129 {
6de2ae4a 3130 *local_tlsdesc_gotent = htab->elf.sgotplt->size
351f65ca 3131 - elf_x86_64_compute_jump_table_size (htab);
6de2ae4a 3132 htab->elf.sgotplt->size += 2 * GOT_ENTRY_SIZE;
67a4f2b7
AO
3133 *local_got = (bfd_vma) -2;
3134 }
3135 if (! GOT_TLS_GDESC_P (*local_tls_type)
3136 || GOT_TLS_GD_P (*local_tls_type))
3137 {
3138 *local_got = s->size;
3139 s->size += GOT_ENTRY_SIZE;
3140 if (GOT_TLS_GD_P (*local_tls_type))
3141 s->size += GOT_ENTRY_SIZE;
3142 }
bffbf940 3143 if (info->shared
67a4f2b7 3144 || GOT_TLS_GD_ANY_P (*local_tls_type)
bffbf940 3145 || *local_tls_type == GOT_TLS_IE)
67a4f2b7
AO
3146 {
3147 if (GOT_TLS_GDESC_P (*local_tls_type))
3148 {
6de2ae4a 3149 htab->elf.srelplt->size
351f65ca 3150 += bed->s->sizeof_rela;
67a4f2b7
AO
3151 htab->tlsdesc_plt = (bfd_vma) -1;
3152 }
3153 if (! GOT_TLS_GDESC_P (*local_tls_type)
3154 || GOT_TLS_GD_P (*local_tls_type))
351f65ca 3155 srel->size += bed->s->sizeof_rela;
67a4f2b7 3156 }
70256ad8
AJ
3157 }
3158 else
c434dee6
AJ
3159 *local_got = (bfd_vma) -1;
3160 }
3161 }
70256ad8 3162
bffbf940
JJ
3163 if (htab->tls_ld_got.refcount > 0)
3164 {
3165 /* Allocate 2 got entries and 1 dynamic reloc for R_X86_64_TLSLD
3166 relocs. */
6de2ae4a
L
3167 htab->tls_ld_got.offset = htab->elf.sgot->size;
3168 htab->elf.sgot->size += 2 * GOT_ENTRY_SIZE;
351f65ca 3169 htab->elf.srelgot->size += bed->s->sizeof_rela;
bffbf940
JJ
3170 }
3171 else
3172 htab->tls_ld_got.offset = -1;
3173
c434dee6
AJ
3174 /* Allocate global sym .plt and .got entries, and space for global
3175 sym dynamic relocs. */
351f65ca 3176 elf_link_hash_traverse (&htab->elf, elf_x86_64_allocate_dynrelocs,
eb4ff4d6 3177 info);
c434dee6 3178
c25bc9fc
L
3179 /* Allocate .plt and .got entries, and space for local symbols. */
3180 htab_traverse (htab->loc_hash_table,
351f65ca 3181 elf_x86_64_allocate_local_dynrelocs,
c25bc9fc
L
3182 info);
3183
67a4f2b7
AO
3184 /* For every jump slot reserved in the sgotplt, reloc_count is
3185 incremented. However, when we reserve space for TLS descriptors,
3186 it's not incremented, so in order to compute the space reserved
3187 for them, it suffices to multiply the reloc count by the jump
e1f98742
L
3188 slot size.
3189
3190 PR ld/13302: We start next_irelative_index at the end of .rela.plt
3191 so that R_X86_64_IRELATIVE entries come last. */
6de2ae4a 3192 if (htab->elf.srelplt)
e1f98742
L
3193 {
3194 htab->sgotplt_jump_table_size
3195 = elf_x86_64_compute_jump_table_size (htab);
3196 htab->next_irelative_index = htab->elf.srelplt->reloc_count - 1;
3197 }
3198 else if (htab->elf.irelplt)
3199 htab->next_irelative_index = htab->elf.irelplt->reloc_count - 1;
67a4f2b7
AO
3200
3201 if (htab->tlsdesc_plt)
3202 {
3203 /* If we're not using lazy TLS relocations, don't generate the
3204 PLT and GOT entries they require. */
3205 if ((info->flags & DF_BIND_NOW))
3206 htab->tlsdesc_plt = 0;
3207 else
3208 {
6de2ae4a
L
3209 htab->tlsdesc_got = htab->elf.sgot->size;
3210 htab->elf.sgot->size += GOT_ENTRY_SIZE;
67a4f2b7
AO
3211 /* Reserve room for the initial entry.
3212 FIXME: we could probably do away with it in this case. */
6de2ae4a 3213 if (htab->elf.splt->size == 0)
eed180f8 3214 htab->elf.splt->size += GET_PLT_ENTRY_SIZE (output_bfd);
6de2ae4a 3215 htab->tlsdesc_plt = htab->elf.splt->size;
eed180f8 3216 htab->elf.splt->size += GET_PLT_ENTRY_SIZE (output_bfd);
67a4f2b7
AO
3217 }
3218 }
3219
a7b16ceb
L
3220 if (htab->elf.sgotplt)
3221 {
3222 /* Don't allocate .got.plt section if there are no GOT nor PLT
eed180f8 3223 entries and there is no refeence to _GLOBAL_OFFSET_TABLE_. */
9d4b2dba
L
3224 if ((htab->elf.hgot == NULL
3225 || !htab->elf.hgot->ref_regular_nonweak)
e28df02b
L
3226 && (htab->elf.sgotplt->size
3227 == get_elf_backend_data (output_bfd)->got_header_size)
a7b16ceb
L
3228 && (htab->elf.splt == NULL
3229 || htab->elf.splt->size == 0)
3230 && (htab->elf.sgot == NULL
3231 || htab->elf.sgot->size == 0)
3232 && (htab->elf.iplt == NULL
3233 || htab->elf.iplt->size == 0)
3234 && (htab->elf.igotplt == NULL
3235 || htab->elf.igotplt->size == 0))
3236 htab->elf.sgotplt->size = 0;
3237 }
3238
9a2a56cc
AM
3239 if (htab->plt_eh_frame != NULL
3240 && htab->elf.splt != NULL
3241 && htab->elf.splt->size != 0
3242 && !bfd_is_abs_section (htab->elf.splt->output_section)
3243 && _bfd_elf_eh_frame_present (info))
3244 {
3245 const struct elf_x86_64_backend_data *arch_data
f8222080 3246 = get_elf_x86_64_arch_data (bed);
9a2a56cc
AM
3247 htab->plt_eh_frame->size = arch_data->eh_frame_plt_size;
3248 }
3249
c434dee6
AJ
3250 /* We now have determined the sizes of the various dynamic sections.
3251 Allocate memory for them. */
b34976b6 3252 relocs = FALSE;
c434dee6
AJ
3253 for (s = dynobj->sections; s != NULL; s = s->next)
3254 {
3255 if ((s->flags & SEC_LINKER_CREATED) == 0)
3256 continue;
3257
6de2ae4a
L
3258 if (s == htab->elf.splt
3259 || s == htab->elf.sgot
3260 || s == htab->elf.sgotplt
3261 || s == htab->elf.iplt
3262 || s == htab->elf.igotplt
0ff2b86e 3263 || s == htab->plt_bnd
dd7e64d4 3264 || s == htab->plt_got
9a2a56cc 3265 || s == htab->plt_eh_frame
75ff4589 3266 || s == htab->sdynbss)
c434dee6
AJ
3267 {
3268 /* Strip this section if we don't need it; see the
3269 comment below. */
3270 }
0112cd26 3271 else if (CONST_STRNEQ (bfd_get_section_name (dynobj, s), ".rela"))
c434dee6 3272 {
6de2ae4a 3273 if (s->size != 0 && s != htab->elf.srelplt)
b34976b6 3274 relocs = TRUE;
c434dee6
AJ
3275
3276 /* We use the reloc_count field as a counter if we need
3277 to copy relocs into the output file. */
6de2ae4a 3278 if (s != htab->elf.srelplt)
67a4f2b7 3279 s->reloc_count = 0;
70256ad8 3280 }
c434dee6 3281 else
70256ad8
AJ
3282 {
3283 /* It's not one of our sections, so don't allocate space. */
3284 continue;
3285 }
3286
eea6121a 3287 if (s->size == 0)
70256ad8 3288 {
c434dee6
AJ
3289 /* If we don't need this section, strip it from the
3290 output file. This is mostly to handle .rela.bss and
3291 .rela.plt. We must create both sections in
3292 create_dynamic_sections, because they must be created
3293 before the linker maps input sections to output
3294 sections. The linker does that before
3295 adjust_dynamic_symbol is called, and it is that
3296 function which decides whether anything needs to go
3297 into these sections. */
3298
8423293d 3299 s->flags |= SEC_EXCLUDE;
70256ad8
AJ
3300 continue;
3301 }
3302
c456f082
AM
3303 if ((s->flags & SEC_HAS_CONTENTS) == 0)
3304 continue;
3305
70256ad8
AJ
3306 /* Allocate memory for the section contents. We use bfd_zalloc
3307 here in case unused entries are not reclaimed before the
3308 section's contents are written out. This should not happen,
3309 but this way if it does, we get a R_X86_64_NONE reloc instead
3310 of garbage. */
eea6121a 3311 s->contents = (bfd_byte *) bfd_zalloc (dynobj, s->size);
c434dee6 3312 if (s->contents == NULL)
b34976b6 3313 return FALSE;
70256ad8
AJ
3314 }
3315
e41b3a13 3316 if (htab->plt_eh_frame != NULL
9a2a56cc
AM
3317 && htab->plt_eh_frame->contents != NULL)
3318 {
3319 const struct elf_x86_64_backend_data *arch_data
f8222080 3320 = get_elf_x86_64_arch_data (bed);
9a2a56cc
AM
3321
3322 memcpy (htab->plt_eh_frame->contents,
3323 arch_data->eh_frame_plt, htab->plt_eh_frame->size);
3324 bfd_put_32 (dynobj, htab->elf.splt->size,
3325 htab->plt_eh_frame->contents + PLT_FDE_LEN_OFFSET);
3326 }
e41b3a13 3327
c434dee6 3328 if (htab->elf.dynamic_sections_created)
70256ad8
AJ
3329 {
3330 /* Add some entries to the .dynamic section. We fill in the
351f65ca 3331 values later, in elf_x86_64_finish_dynamic_sections, but we
70256ad8 3332 must add the entries now so that we get the correct size for
407443a3 3333 the .dynamic section. The DT_DEBUG entry is filled in by the
70256ad8 3334 dynamic linker and used by the debugger. */
dc810e39 3335#define add_dynamic_entry(TAG, VAL) \
5a580b3a 3336 _bfd_elf_add_dynamic_entry (info, TAG, VAL)
dc810e39 3337
36af4a4e 3338 if (info->executable)
70256ad8 3339 {
dc810e39 3340 if (!add_dynamic_entry (DT_DEBUG, 0))
b34976b6 3341 return FALSE;
70256ad8
AJ
3342 }
3343
6de2ae4a 3344 if (htab->elf.splt->size != 0)
70256ad8 3345 {
dc810e39
AM
3346 if (!add_dynamic_entry (DT_PLTGOT, 0)
3347 || !add_dynamic_entry (DT_PLTRELSZ, 0)
3348 || !add_dynamic_entry (DT_PLTREL, DT_RELA)
3349 || !add_dynamic_entry (DT_JMPREL, 0))
b34976b6 3350 return FALSE;
67a4f2b7
AO
3351
3352 if (htab->tlsdesc_plt
3353 && (!add_dynamic_entry (DT_TLSDESC_PLT, 0)
3354 || !add_dynamic_entry (DT_TLSDESC_GOT, 0)))
3355 return FALSE;
70256ad8
AJ
3356 }
3357
3358 if (relocs)
3359 {
dc810e39
AM
3360 if (!add_dynamic_entry (DT_RELA, 0)
3361 || !add_dynamic_entry (DT_RELASZ, 0)
351f65ca 3362 || !add_dynamic_entry (DT_RELAENT, bed->s->sizeof_rela))
b34976b6 3363 return FALSE;
70256ad8 3364
c434dee6
AJ
3365 /* If any dynamic relocs apply to a read-only section,
3366 then we need a DT_TEXTREL entry. */
3367 if ((info->flags & DF_TEXTREL) == 0)
eed180f8 3368 elf_link_hash_traverse (&htab->elf,
351f65ca 3369 elf_x86_64_readonly_dynrelocs,
eb4ff4d6 3370 info);
c434dee6
AJ
3371
3372 if ((info->flags & DF_TEXTREL) != 0)
3373 {
3374 if (!add_dynamic_entry (DT_TEXTREL, 0))
b34976b6 3375 return FALSE;
c434dee6 3376 }
70256ad8
AJ
3377 }
3378 }
dc810e39 3379#undef add_dynamic_entry
70256ad8 3380
b34976b6 3381 return TRUE;
70256ad8
AJ
3382}
3383
67a4f2b7 3384static bfd_boolean
351f65ca
L
3385elf_x86_64_always_size_sections (bfd *output_bfd,
3386 struct bfd_link_info *info)
67a4f2b7
AO
3387{
3388 asection *tls_sec = elf_hash_table (info)->tls_sec;
3389
3390 if (tls_sec)
3391 {
3392 struct elf_link_hash_entry *tlsbase;
3393
3394 tlsbase = elf_link_hash_lookup (elf_hash_table (info),
3395 "_TLS_MODULE_BASE_",
3396 FALSE, FALSE, FALSE);
3397
3398 if (tlsbase && tlsbase->type == STT_TLS)
3399 {
351f65ca 3400 struct elf_x86_64_link_hash_table *htab;
67a4f2b7
AO
3401 struct bfd_link_hash_entry *bh = NULL;
3402 const struct elf_backend_data *bed
3403 = get_elf_backend_data (output_bfd);
3404
351f65ca 3405 htab = elf_x86_64_hash_table (info);
4dfe6ac6
NC
3406 if (htab == NULL)
3407 return FALSE;
3408
67a4f2b7
AO
3409 if (!(_bfd_generic_link_add_one_symbol
3410 (info, output_bfd, "_TLS_MODULE_BASE_", BSF_LOCAL,
3411 tls_sec, 0, NULL, FALSE,
3412 bed->collect, &bh)))
3413 return FALSE;
9f03412a 3414
4dfe6ac6 3415 htab->tls_module_base = bh;
9f03412a 3416
67a4f2b7
AO
3417 tlsbase = (struct elf_link_hash_entry *)bh;
3418 tlsbase->def_regular = 1;
3419 tlsbase->other = STV_HIDDEN;
576fa883 3420 tlsbase->root.linker_def = 1;
67a4f2b7
AO
3421 (*bed->elf_backend_hide_symbol) (info, tlsbase, TRUE);
3422 }
3423 }
3424
3425 return TRUE;
3426}
3427
9f03412a
AO
3428/* _TLS_MODULE_BASE_ needs to be treated especially when linking
3429 executables. Rather than setting it to the beginning of the TLS
3430 section, we have to set it to the end. This function may be called
3431 multiple times, it is idempotent. */
3432
3433static void
351f65ca 3434elf_x86_64_set_tls_module_base (struct bfd_link_info *info)
9f03412a 3435{
351f65ca 3436 struct elf_x86_64_link_hash_table *htab;
9f03412a
AO
3437 struct bfd_link_hash_entry *base;
3438
3439 if (!info->executable)
3440 return;
3441
351f65ca 3442 htab = elf_x86_64_hash_table (info);
4dfe6ac6
NC
3443 if (htab == NULL)
3444 return;
9f03412a 3445
4dfe6ac6
NC
3446 base = htab->tls_module_base;
3447 if (base == NULL)
9f03412a
AO
3448 return;
3449
4dfe6ac6 3450 base->u.def.value = htab->elf.tls_size;
9f03412a
AO
3451}
3452
bffbf940
JJ
3453/* Return the base VMA address which should be subtracted from real addresses
3454 when resolving @dtpoff relocation.
3455 This is PT_TLS segment p_vaddr. */
3456
3457static bfd_vma
351f65ca 3458elf_x86_64_dtpoff_base (struct bfd_link_info *info)
bffbf940 3459{
e1918d23
AM
3460 /* If tls_sec is NULL, we should have signalled an error already. */
3461 if (elf_hash_table (info)->tls_sec == NULL)
bffbf940 3462 return 0;
e1918d23 3463 return elf_hash_table (info)->tls_sec->vma;
bffbf940
JJ
3464}
3465
3466/* Return the relocation value for @tpoff relocation
3467 if STT_TLS virtual address is ADDRESS. */
3468
3469static bfd_vma
351f65ca 3470elf_x86_64_tpoff (struct bfd_link_info *info, bfd_vma address)
bffbf940 3471{
e1918d23 3472 struct elf_link_hash_table *htab = elf_hash_table (info);
7dc98aea
RO
3473 const struct elf_backend_data *bed = get_elf_backend_data (info->output_bfd);
3474 bfd_vma static_tls_size;
bffbf940
JJ
3475
3476 /* If tls_segment is NULL, we should have signalled an error already. */
e1918d23 3477 if (htab->tls_sec == NULL)
bffbf940 3478 return 0;
7dc98aea
RO
3479
3480 /* Consider special static TLS alignment requirements. */
3481 static_tls_size = BFD_ALIGN (htab->tls_size, bed->static_tls_alignment);
3482 return address - static_tls_size - htab->tls_sec->vma;
bffbf940
JJ
3483}
3484
90f487df
L
3485/* Is the instruction before OFFSET in CONTENTS a 32bit relative
3486 branch? */
3487
3488static bfd_boolean
3489is_32bit_relative_branch (bfd_byte *contents, bfd_vma offset)
3490{
3491 /* Opcode Instruction
3492 0xe8 call
3493 0xe9 jump
3494 0x0f 0x8x conditional jump */
3495 return ((offset > 0
3496 && (contents [offset - 1] == 0xe8
3497 || contents [offset - 1] == 0xe9))
3498 || (offset > 1
3499 && contents [offset - 2] == 0x0f
3500 && (contents [offset - 1] & 0xf0) == 0x80));
3501}
3502
8d88c4ca
NC
3503/* Relocate an x86_64 ELF section. */
3504
b34976b6 3505static bfd_boolean
351f65ca
L
3506elf_x86_64_relocate_section (bfd *output_bfd,
3507 struct bfd_link_info *info,
3508 bfd *input_bfd,
3509 asection *input_section,
3510 bfd_byte *contents,
3511 Elf_Internal_Rela *relocs,
3512 Elf_Internal_Sym *local_syms,
3513 asection **local_sections)
8d88c4ca 3514{
351f65ca 3515 struct elf_x86_64_link_hash_table *htab;
8d88c4ca
NC
3516 Elf_Internal_Shdr *symtab_hdr;
3517 struct elf_link_hash_entry **sym_hashes;
3518 bfd_vma *local_got_offsets;
67a4f2b7 3519 bfd_vma *local_tlsdesc_gotents;
c434dee6 3520 Elf_Internal_Rela *rel;
8d88c4ca 3521 Elf_Internal_Rela *relend;
eed180f8 3522 const unsigned int plt_entry_size = GET_PLT_ENTRY_SIZE (info->output_bfd);
8d88c4ca 3523
0ffa91dd
NC
3524 BFD_ASSERT (is_x86_64_elf (input_bfd));
3525
351f65ca 3526 htab = elf_x86_64_hash_table (info);
4dfe6ac6
NC
3527 if (htab == NULL)
3528 return FALSE;
0ffa91dd 3529 symtab_hdr = &elf_symtab_hdr (input_bfd);
8d88c4ca
NC
3530 sym_hashes = elf_sym_hashes (input_bfd);
3531 local_got_offsets = elf_local_got_offsets (input_bfd);
351f65ca 3532 local_tlsdesc_gotents = elf_x86_64_local_tlsdesc_gotent (input_bfd);
8d88c4ca 3533
351f65ca 3534 elf_x86_64_set_tls_module_base (info);
9f03412a 3535
c434dee6 3536 rel = relocs;
8d88c4ca 3537 relend = relocs + input_section->reloc_count;
c434dee6 3538 for (; rel < relend; rel++)
8d88c4ca 3539 {
bffbf940 3540 unsigned int r_type;
8d88c4ca
NC
3541 reloc_howto_type *howto;
3542 unsigned long r_symndx;
3543 struct elf_link_hash_entry *h;
0ff2b86e 3544 struct elf_x86_64_link_hash_entry *eh;
8d88c4ca
NC
3545 Elf_Internal_Sym *sym;
3546 asection *sec;
0ff2b86e 3547 bfd_vma off, offplt, plt_offset;
8d88c4ca 3548 bfd_vma relocation;
b34976b6 3549 bfd_boolean unresolved_reloc;
8d88c4ca 3550 bfd_reloc_status_type r;
bffbf940 3551 int tls_type;
0ff2b86e 3552 asection *base_got, *resolved_plt;
1788fc08 3553 bfd_vma st_size;
8d88c4ca 3554
351f65ca 3555 r_type = ELF32_R_TYPE (rel->r_info);
fe4770f4
AJ
3556 if (r_type == (int) R_X86_64_GNU_VTINHERIT
3557 || r_type == (int) R_X86_64_GNU_VTENTRY)
3558 continue;
8d88c4ca 3559
9911c0fc 3560 if (r_type >= (int) R_X86_64_standard)
8da6118f 3561 {
9911c0fc
L
3562 (*_bfd_error_handler)
3563 (_("%B: unrecognized relocation (0x%x) in section `%A'"),
3564 input_bfd, input_section, r_type);
8da6118f 3565 bfd_set_error (bfd_error_bad_value);
b34976b6 3566 return FALSE;
8da6118f 3567 }
8d88c4ca 3568
d7921315 3569 if (r_type != (int) R_X86_64_32
eed180f8 3570 || ABI_64_P (output_bfd))
d7921315
L
3571 howto = x86_64_elf_howto_table + r_type;
3572 else
3573 howto = (x86_64_elf_howto_table
3574 + ARRAY_SIZE (x86_64_elf_howto_table) - 1);
351f65ca 3575 r_symndx = htab->r_sym (rel->r_info);
8d88c4ca
NC
3576 h = NULL;
3577 sym = NULL;
3578 sec = NULL;
b34976b6 3579 unresolved_reloc = FALSE;
8d88c4ca 3580 if (r_symndx < symtab_hdr->sh_info)
8da6118f
KH
3581 {
3582 sym = local_syms + r_symndx;
3583 sec = local_sections[r_symndx];
c434dee6 3584
c25bc9fc
L
3585 relocation = _bfd_elf_rela_local_sym (output_bfd, sym,
3586 &sec, rel);
1788fc08 3587 st_size = sym->st_size;
c25bc9fc
L
3588
3589 /* Relocate against local STT_GNU_IFUNC symbol. */
1f85278f 3590 if (!info->relocatable
351f65ca 3591 && ELF_ST_TYPE (sym->st_info) == STT_GNU_IFUNC)
c25bc9fc 3592 {
351f65ca
L
3593 h = elf_x86_64_get_local_sym_hash (htab, input_bfd,
3594 rel, FALSE);
c25bc9fc
L
3595 if (h == NULL)
3596 abort ();
3597
eed180f8 3598 /* Set STT_GNU_IFUNC symbol value. */
c25bc9fc
L
3599 h->root.u.def.value = sym->st_value;
3600 h->root.u.def.section = sec;
3601 }
8da6118f 3602 }
8d88c4ca 3603 else
8da6118f 3604 {
c9736ba0 3605 bfd_boolean warned ATTRIBUTE_UNUSED;
62d887d4 3606 bfd_boolean ignored ATTRIBUTE_UNUSED;
c434dee6 3607
b2a8e766
AM
3608 RELOC_FOR_GLOBAL_SYMBOL (info, input_bfd, input_section, rel,
3609 r_symndx, symtab_hdr, sym_hashes,
3610 h, sec, relocation,
62d887d4 3611 unresolved_reloc, warned, ignored);
1788fc08 3612 st_size = h->size;
8da6118f 3613 }
ab96bf03 3614
dbaa2011 3615 if (sec != NULL && discarded_section (sec))
0672748a 3616 RELOC_AGAINST_DISCARDED_SECTION (info, input_bfd, input_section,
545fd46b 3617 rel, 1, relend, howto, 0, contents);
ab96bf03
AM
3618
3619 if (info->relocatable)
3620 continue;
3621
1788fc08 3622 if (rel->r_addend == 0 && !ABI_64_P (output_bfd))
64d25c44 3623 {
1788fc08
L
3624 if (r_type == R_X86_64_64)
3625 {
3626 /* For x32, treat R_X86_64_64 like R_X86_64_32 and
3627 zero-extend it to 64bit if addend is zero. */
3628 r_type = R_X86_64_32;
3629 memset (contents + rel->r_offset + 4, 0, 4);
3630 }
3631 else if (r_type == R_X86_64_SIZE64)
3632 {
3633 /* For x32, treat R_X86_64_SIZE64 like R_X86_64_SIZE32 and
3634 zero-extend it to 64bit if addend is zero. */
3635 r_type = R_X86_64_SIZE32;
3636 memset (contents + rel->r_offset + 4, 0, 4);
3637 }
64d25c44
L
3638 }
3639
0ff2b86e
L
3640 eh = (struct elf_x86_64_link_hash_entry *) h;
3641
cbe950e9
L
3642 /* Since STT_GNU_IFUNC symbol must go through PLT, we handle
3643 it here if it is defined in a non-shared object. */
3644 if (h != NULL
3645 && h->type == STT_GNU_IFUNC
3646 && h->def_regular)
3647 {
cbe950e9 3648 bfd_vma plt_index;
4c544807 3649 const char *name;
cbe950e9
L
3650
3651 if ((input_section->flags & SEC_ALLOC) == 0
3652 || h->plt.offset == (bfd_vma) -1)
3653 abort ();
3654
3655 /* STT_GNU_IFUNC symbol must go through PLT. */
0ff2b86e
L
3656 if (htab->elf.splt != NULL)
3657 {
3658 if (htab->plt_bnd != NULL)
3659 {
3660 resolved_plt = htab->plt_bnd;
3661 plt_offset = eh->plt_bnd.offset;
3662 }
3663 else
3664 {
3665 resolved_plt = htab->elf.splt;
3666 plt_offset = h->plt.offset;
3667 }
3668 }
3669 else
3670 {
3671 resolved_plt = htab->elf.iplt;
3672 plt_offset = h->plt.offset;
3673 }
3674
3675 relocation = (resolved_plt->output_section->vma
3676 + resolved_plt->output_offset + plt_offset);
cbe950e9
L
3677
3678 switch (r_type)
3679 {
3680 default:
4c544807
L
3681 if (h->root.root.string)
3682 name = h->root.root.string;
3683 else
3684 name = bfd_elf_sym_name (input_bfd, symtab_hdr, sym,
3685 NULL);
cbe950e9
L
3686 (*_bfd_error_handler)
3687 (_("%B: relocation %s against STT_GNU_IFUNC "
3688 "symbol `%s' isn't handled by %s"), input_bfd,
3689 x86_64_elf_howto_table[r_type].name,
4c544807 3690 name, __FUNCTION__);
cbe950e9
L
3691 bfd_set_error (bfd_error_bad_value);
3692 return FALSE;
3693
3694 case R_X86_64_32S:
710ab287 3695 if (info->shared)
cbe950e9 3696 abort ();
710ab287
L
3697 goto do_relocation;
3698
248775ba
L
3699 case R_X86_64_32:
3700 if (ABI_64_P (output_bfd))
3701 goto do_relocation;
17672001 3702 /* FALLTHROUGH */
eed180f8 3703 case R_X86_64_64:
710ab287
L
3704 if (rel->r_addend != 0)
3705 {
4c544807
L
3706 if (h->root.root.string)
3707 name = h->root.root.string;
3708 else
3709 name = bfd_elf_sym_name (input_bfd, symtab_hdr,
3710 sym, NULL);
710ab287
L
3711 (*_bfd_error_handler)
3712 (_("%B: relocation %s against STT_GNU_IFUNC "
3713 "symbol `%s' has non-zero addend: %d"),
3714 input_bfd, x86_64_elf_howto_table[r_type].name,
4c544807 3715 name, rel->r_addend);
710ab287
L
3716 bfd_set_error (bfd_error_bad_value);
3717 return FALSE;
3718 }
3719
3720 /* Generate dynamic relcoation only when there is a
c293fa49 3721 non-GOT reference in a shared object. */
710ab287
L
3722 if (info->shared && h->non_got_ref)
3723 {
3724 Elf_Internal_Rela outrel;
710ab287
L
3725 asection *sreloc;
3726
c25bc9fc
L
3727 /* Need a dynamic relocation to get the real function
3728 address. */
710ab287
L
3729 outrel.r_offset = _bfd_elf_section_offset (output_bfd,
3730 info,
3731 input_section,
3732 rel->r_offset);
3733 if (outrel.r_offset == (bfd_vma) -1
3734 || outrel.r_offset == (bfd_vma) -2)
3735 abort ();
3736
3737 outrel.r_offset += (input_section->output_section->vma
3738 + input_section->output_offset);
3739
3740 if (h->dynindx == -1
44c4ea11
L
3741 || h->forced_local
3742 || info->executable)
710ab287
L
3743 {
3744 /* This symbol is resolved locally. */
56b8aada
L
3745 outrel.r_info = htab->r_info (0, R_X86_64_IRELATIVE);
3746 outrel.r_addend = (h->root.u.def.value
3747 + h->root.u.def.section->output_section->vma
3748 + h->root.u.def.section->output_offset);
710ab287
L
3749 }
3750 else
3751 {
351f65ca 3752 outrel.r_info = htab->r_info (h->dynindx, r_type);
710ab287
L
3753 outrel.r_addend = 0;
3754 }
3755
6de2ae4a 3756 sreloc = htab->elf.irelifunc;
351f65ca 3757 elf_append_rela (output_bfd, sreloc, &outrel);
710ab287
L
3758
3759 /* If this reloc is against an external symbol, we
3760 do not want to fiddle with the addend. Otherwise,
3761 we need to include the symbol value so that it
3762 becomes an addend for the dynamic reloc. For an
3763 internal symbol, we have updated addend. */
56b8aada 3764 continue;
710ab287 3765 }
17672001 3766 /* FALLTHROUGH */
cbe950e9 3767 case R_X86_64_PC32:
c3320543 3768 case R_X86_64_PC32_BND:
cbe950e9
L
3769 case R_X86_64_PC64:
3770 case R_X86_64_PLT32:
c3320543 3771 case R_X86_64_PLT32_BND:
cbe950e9
L
3772 goto do_relocation;
3773
3774 case R_X86_64_GOTPCREL:
3775 case R_X86_64_GOTPCREL64:
6de2ae4a 3776 base_got = htab->elf.sgot;
cbe950e9
L
3777 off = h->got.offset;
3778
7afd84dc 3779 if (base_got == NULL)
cbe950e9
L
3780 abort ();
3781
7afd84dc 3782 if (off == (bfd_vma) -1)
cbe950e9 3783 {
7afd84dc
L
3784 /* We can't use h->got.offset here to save state, or
3785 even just remember the offset, as finish_dynamic_symbol
3786 would use that as offset into .got. */
cbe950e9 3787
6de2ae4a 3788 if (htab->elf.splt != NULL)
7afd84dc 3789 {
eed180f8 3790 plt_index = h->plt.offset / plt_entry_size - 1;
7afd84dc 3791 off = (plt_index + 3) * GOT_ENTRY_SIZE;
6de2ae4a 3792 base_got = htab->elf.sgotplt;
7afd84dc 3793 }
cbe950e9
L
3794 else
3795 {
eed180f8 3796 plt_index = h->plt.offset / plt_entry_size;
7afd84dc 3797 off = plt_index * GOT_ENTRY_SIZE;
6de2ae4a 3798 base_got = htab->elf.igotplt;
7afd84dc
L
3799 }
3800
3801 if (h->dynindx == -1
3802 || h->forced_local
3803 || info->symbolic)
3804 {
eed180f8 3805 /* This references the local defitionion. We must
7afd84dc 3806 initialize this entry in the global offset table.
eed180f8 3807 Since the offset must always be a multiple of 8,
7afd84dc
L
3808 we use the least significant bit to record
3809 whether we have initialized it already.
3810
3811 When doing a dynamic link, we create a .rela.got
3812 relocation entry to initialize the value. This
3813 is done in the finish_dynamic_symbol routine. */
3814 if ((off & 1) != 0)
3815 off &= ~1;
3816 else
3817 {
3818 bfd_put_64 (output_bfd, relocation,
3819 base_got->contents + off);
3820 /* Note that this is harmless for the GOTPLT64
3821 case, as -1 | 1 still is -1. */
3822 h->got.offset |= 1;
3823 }
cbe950e9
L
3824 }
3825 }
3826
3827 relocation = (base_got->output_section->vma
3828 + base_got->output_offset + off);
3829
cbe950e9
L
3830 goto do_relocation;
3831 }
3832 }
3833
70256ad8
AJ
3834 /* When generating a shared object, the relocations handled here are
3835 copied into the output file to be resolved at run time. */
3836 switch (r_type)
3837 {
3838 case R_X86_64_GOT32:
7b81dfbb 3839 case R_X86_64_GOT64:
70256ad8
AJ
3840 /* Relocation is to the entry for this symbol in the global
3841 offset table. */
70256ad8 3842 case R_X86_64_GOTPCREL:
7b81dfbb
AJ
3843 case R_X86_64_GOTPCREL64:
3844 /* Use global offset table entry as symbol value. */
3845 case R_X86_64_GOTPLT64:
553d1284 3846 /* This is obsolete and treated the the same as GOT64. */
6de2ae4a 3847 base_got = htab->elf.sgot;
7b81dfbb 3848
6de2ae4a 3849 if (htab->elf.sgot == NULL)
c434dee6 3850 abort ();
053579d7 3851
51e0a107 3852 if (h != NULL)
70256ad8 3853 {
b34976b6 3854 bfd_boolean dyn;
c434dee6
AJ
3855
3856 off = h->got.offset;
7b81dfbb 3857 if (h->needs_plt
eed180f8 3858 && h->plt.offset != (bfd_vma)-1
7b81dfbb
AJ
3859 && off == (bfd_vma)-1)
3860 {
3861 /* We can't use h->got.offset here to save
3862 state, or even just remember the offset, as
3863 finish_dynamic_symbol would use that as offset into
3864 .got. */
eed180f8 3865 bfd_vma plt_index = h->plt.offset / plt_entry_size - 1;
7b81dfbb 3866 off = (plt_index + 3) * GOT_ENTRY_SIZE;
6de2ae4a 3867 base_got = htab->elf.sgotplt;
7b81dfbb
AJ
3868 }
3869
c434dee6 3870 dyn = htab->elf.dynamic_sections_created;
51e0a107 3871
27482721 3872 if (! WILL_CALL_FINISH_DYNAMIC_SYMBOL (dyn, info->shared, h)
51e0a107 3873 || (info->shared
27482721 3874 && SYMBOL_REFERENCES_LOCAL (info, h))
4bc6e03a
AJ
3875 || (ELF_ST_VISIBILITY (h->other)
3876 && h->root.type == bfd_link_hash_undefweak))
51e0a107
JH
3877 {
3878 /* This is actually a static link, or it is a -Bsymbolic
3879 link and the symbol is defined locally, or the symbol
407443a3 3880 was forced to be local because of a version file. We
51e0a107
JH
3881 must initialize this entry in the global offset table.
3882 Since the offset must always be a multiple of 8, we
3883 use the least significant bit to record whether we
3884 have initialized it already.
3885
3886 When doing a dynamic link, we create a .rela.got
407443a3
AJ
3887 relocation entry to initialize the value. This is
3888 done in the finish_dynamic_symbol routine. */
51e0a107
JH
3889 if ((off & 1) != 0)
3890 off &= ~1;
3891 else
3892 {
3893 bfd_put_64 (output_bfd, relocation,
7b81dfbb
AJ
3894 base_got->contents + off);
3895 /* Note that this is harmless for the GOTPLT64 case,
eed180f8 3896 as -1 | 1 still is -1. */
51e0a107
JH
3897 h->got.offset |= 1;
3898 }
3899 }
053579d7 3900 else
b34976b6 3901 unresolved_reloc = FALSE;
70256ad8 3902 }
51e0a107
JH
3903 else
3904 {
c434dee6
AJ
3905 if (local_got_offsets == NULL)
3906 abort ();
51e0a107
JH
3907
3908 off = local_got_offsets[r_symndx];
3909
3910 /* The offset must always be a multiple of 8. We use
407443a3
AJ
3911 the least significant bit to record whether we have
3912 already generated the necessary reloc. */
51e0a107
JH
3913 if ((off & 1) != 0)
3914 off &= ~1;
3915 else
3916 {
c434dee6 3917 bfd_put_64 (output_bfd, relocation,
7b81dfbb 3918 base_got->contents + off);
51e0a107
JH
3919
3920 if (info->shared)
3921 {
947216bf 3922 asection *s;
51e0a107 3923 Elf_Internal_Rela outrel;
70256ad8 3924
51e0a107
JH
3925 /* We need to generate a R_X86_64_RELATIVE reloc
3926 for the dynamic linker. */
6de2ae4a 3927 s = htab->elf.srelgot;
947216bf 3928 if (s == NULL)
c434dee6 3929 abort ();
51e0a107 3930
7b81dfbb
AJ
3931 outrel.r_offset = (base_got->output_section->vma
3932 + base_got->output_offset
51e0a107 3933 + off);
351f65ca 3934 outrel.r_info = htab->r_info (0, R_X86_64_RELATIVE);
51e0a107 3935 outrel.r_addend = relocation;
351f65ca 3936 elf_append_rela (output_bfd, s, &outrel);
51e0a107
JH
3937 }
3938
3939 local_got_offsets[r_symndx] |= 1;
3940 }
51e0a107 3941 }
6a2bda3f 3942
c434dee6
AJ
3943 if (off >= (bfd_vma) -2)
3944 abort ();
3945
7b81dfbb
AJ
3946 relocation = base_got->output_section->vma
3947 + base_got->output_offset + off;
3948 if (r_type != R_X86_64_GOTPCREL && r_type != R_X86_64_GOTPCREL64)
6de2ae4a
L
3949 relocation -= htab->elf.sgotplt->output_section->vma
3950 - htab->elf.sgotplt->output_offset;
c434dee6 3951
70256ad8
AJ
3952 break;
3953
d6ab8113
JB
3954 case R_X86_64_GOTOFF64:
3955 /* Relocation is relative to the start of the global offset
3956 table. */
3957
3958 /* Check to make sure it isn't a protected function symbol
3959 for shared library since it may not be local when used
3960 as function address. */
bdb892b9 3961 if (!info->executable
d6ab8113 3962 && h
bdb892b9 3963 && !SYMBOLIC_BIND (info, h)
d6ab8113
JB
3964 && h->def_regular
3965 && h->type == STT_FUNC
3966 && ELF_ST_VISIBILITY (h->other) == STV_PROTECTED)
3967 {
3968 (*_bfd_error_handler)
3969 (_("%B: relocation R_X86_64_GOTOFF64 against protected function `%s' can not be used when making a shared object"),
3970 input_bfd, h->root.root.string);
3971 bfd_set_error (bfd_error_bad_value);
3972 return FALSE;
3973 }
3974
3975 /* Note that sgot is not involved in this
3976 calculation. We always want the start of .got.plt. If we
3977 defined _GLOBAL_OFFSET_TABLE_ in a different way, as is
3978 permitted by the ABI, we might have to change this
3979 calculation. */
6de2ae4a
L
3980 relocation -= htab->elf.sgotplt->output_section->vma
3981 + htab->elf.sgotplt->output_offset;
d6ab8113
JB
3982 break;
3983
3984 case R_X86_64_GOTPC32:
7b81dfbb 3985 case R_X86_64_GOTPC64:
d6ab8113 3986 /* Use global offset table as symbol value. */
6de2ae4a
L
3987 relocation = htab->elf.sgotplt->output_section->vma
3988 + htab->elf.sgotplt->output_offset;
d6ab8113
JB
3989 unresolved_reloc = FALSE;
3990 break;
7b81dfbb
AJ
3991
3992 case R_X86_64_PLTOFF64:
3993 /* Relocation is PLT entry relative to GOT. For local
3994 symbols it's the symbol itself relative to GOT. */
eed180f8 3995 if (h != NULL
7b81dfbb
AJ
3996 /* See PLT32 handling. */
3997 && h->plt.offset != (bfd_vma) -1
6de2ae4a 3998 && htab->elf.splt != NULL)
7b81dfbb 3999 {
0ff2b86e
L
4000 if (htab->plt_bnd != NULL)
4001 {
4002 resolved_plt = htab->plt_bnd;
4003 plt_offset = eh->plt_bnd.offset;
4004 }
4005 else
4006 {
4007 resolved_plt = htab->elf.splt;
4008 plt_offset = h->plt.offset;
4009 }
4010
4011 relocation = (resolved_plt->output_section->vma
4012 + resolved_plt->output_offset
4013 + plt_offset);
7b81dfbb
AJ
4014 unresolved_reloc = FALSE;
4015 }
4016
6de2ae4a
L
4017 relocation -= htab->elf.sgotplt->output_section->vma
4018 + htab->elf.sgotplt->output_offset;
7b81dfbb 4019 break;
d6ab8113 4020
70256ad8 4021 case R_X86_64_PLT32:
c3320543 4022 case R_X86_64_PLT32_BND:
70256ad8
AJ
4023 /* Relocation is to the entry for this symbol in the
4024 procedure linkage table. */
4025
4026 /* Resolve a PLT32 reloc against a local symbol directly,
407443a3 4027 without using the procedure linkage table. */
70256ad8
AJ
4028 if (h == NULL)
4029 break;
4030
dd7e64d4
L
4031 if ((h->plt.offset == (bfd_vma) -1
4032 && eh->plt_got.offset == (bfd_vma) -1)
6de2ae4a 4033 || htab->elf.splt == NULL)
70256ad8
AJ
4034 {
4035 /* We didn't make a PLT entry for this symbol. This
407443a3
AJ
4036 happens when statically linking PIC code, or when
4037 using -Bsymbolic. */
70256ad8
AJ
4038 break;
4039 }
4040
dd7e64d4 4041 if (h->plt.offset != (bfd_vma) -1)
0ff2b86e 4042 {
dd7e64d4
L
4043 if (htab->plt_bnd != NULL)
4044 {
4045 resolved_plt = htab->plt_bnd;
4046 plt_offset = eh->plt_bnd.offset;
4047 }
4048 else
4049 {
4050 resolved_plt = htab->elf.splt;
4051 plt_offset = h->plt.offset;
4052 }
0ff2b86e
L
4053 }
4054 else
4055 {
dd7e64d4
L
4056 /* Use the GOT PLT. */
4057 resolved_plt = htab->plt_got;
4058 plt_offset = eh->plt_got.offset;
0ff2b86e
L
4059 }
4060
4061 relocation = (resolved_plt->output_section->vma
4062 + resolved_plt->output_offset
4063 + plt_offset);
b34976b6 4064 unresolved_reloc = FALSE;
70256ad8
AJ
4065 break;
4066
1788fc08
L
4067 case R_X86_64_SIZE32:
4068 case R_X86_64_SIZE64:
1788fc08
L
4069 /* Set to symbol size. */
4070 relocation = st_size;
4071 goto direct;
4072
fd8ab9e5
AJ
4073 case R_X86_64_PC8:
4074 case R_X86_64_PC16:
4075 case R_X86_64_PC32:
c3320543 4076 case R_X86_64_PC32_BND:
6333bc0d
L
4077 /* Don't complain about -fPIC if the symbol is undefined when
4078 building executable. */
6610a52d 4079 if (info->shared
ba3bee0b 4080 && (input_section->flags & SEC_ALLOC) != 0
90f487df 4081 && (input_section->flags & SEC_READONLY) != 0
6333bc0d
L
4082 && h != NULL
4083 && !(info->executable
4084 && h->root.type == bfd_link_hash_undefined))
6610a52d 4085 {
41bed6dd
L
4086 bfd_boolean fail = FALSE;
4087 bfd_boolean branch
c3320543
L
4088 = ((r_type == R_X86_64_PC32
4089 || r_type == R_X86_64_PC32_BND)
41bed6dd
L
4090 && is_32bit_relative_branch (contents, rel->r_offset));
4091
4092 if (SYMBOL_REFERENCES_LOCAL (info, h))
4093 {
4094 /* Symbol is referenced locally. Make sure it is
4095 defined locally or for a branch. */
4096 fail = !h->def_regular && !branch;
4097 }
bc696fd5
L
4098 else if (!(info->executable
4099 && (h->needs_copy || eh->needs_copy)))
41bed6dd 4100 {
9a926d55
L
4101 /* Symbol doesn't need copy reloc and isn't referenced
4102 locally. We only allow branch to symbol with
4103 non-default visibility. */
41bed6dd
L
4104 fail = (!branch
4105 || ELF_ST_VISIBILITY (h->other) == STV_DEFAULT);
4106 }
4107
4108 if (fail)
4109 {
4110 const char *fmt;
4111 const char *v;
4112 const char *pic = "";
4113
4114 switch (ELF_ST_VISIBILITY (h->other))
4115 {
4116 case STV_HIDDEN:
4117 v = _("hidden symbol");
4118 break;
4119 case STV_INTERNAL:
4120 v = _("internal symbol");
4121 break;
4122 case STV_PROTECTED:
4123 v = _("protected symbol");
4124 break;
4125 default:
4126 v = _("symbol");
4127 pic = _("; recompile with -fPIC");
4128 break;
4129 }
4130
4131 if (h->def_regular)
4132 fmt = _("%B: relocation %s against %s `%s' can not be used when making a shared object%s");
4133 else
4134 fmt = _("%B: relocation %s against undefined %s `%s' can not be used when making a shared object%s");
4135
4136 (*_bfd_error_handler) (fmt, input_bfd,
4137 x86_64_elf_howto_table[r_type].name,
4138 v, h->root.root.string, pic);
4139 bfd_set_error (bfd_error_bad_value);
4140 return FALSE;
4141 }
6610a52d
L
4142 }
4143 /* Fall through. */
4144
70256ad8
AJ
4145 case R_X86_64_8:
4146 case R_X86_64_16:
4147 case R_X86_64_32:
d6ab8113 4148 case R_X86_64_PC64:
6b3db546 4149 case R_X86_64_64:
80643fbc 4150 /* FIXME: The ABI says the linker should make sure the value is
407443a3 4151 the same when it's zeroextended to 64 bit. */
c434dee6 4152
1788fc08 4153direct:
b1e24c02 4154 if ((input_section->flags & SEC_ALLOC) == 0)
c434dee6
AJ
4155 break;
4156
9a926d55 4157 /* Don't copy a pc-relative relocation into the output file
6333bc0d
L
4158 if the symbol needs copy reloc or the symbol is undefined
4159 when building executable. */
c434dee6 4160 if ((info->shared
fd9edc90
L
4161 && !(info->executable
4162 && h != NULL
6333bc0d
L
4163 && (h->needs_copy
4164 || eh->needs_copy
4165 || h->root.type == bfd_link_hash_undefined)
9a926d55 4166 && IS_X86_64_PCREL_TYPE (r_type))
4bc6e03a
AJ
4167 && (h == NULL
4168 || ELF_ST_VISIBILITY (h->other) == STV_DEFAULT
4169 || h->root.type != bfd_link_hash_undefweak)
1788fc08
L
4170 && ((! IS_X86_64_PCREL_TYPE (r_type)
4171 && r_type != R_X86_64_SIZE32
4172 && r_type != R_X86_64_SIZE64)
d8045f23 4173 || ! SYMBOL_CALLS_LOCAL (info, h)))
d40d037c
AJ
4174 || (ELIMINATE_COPY_RELOCS
4175 && !info->shared
c434dee6
AJ
4176 && h != NULL
4177 && h->dynindx != -1
f5385ebf
AM
4178 && !h->non_got_ref
4179 && ((h->def_dynamic
4180 && !h->def_regular)
c434dee6 4181 || h->root.type == bfd_link_hash_undefweak
0f88be7a 4182 || h->root.type == bfd_link_hash_undefined)))
70256ad8
AJ
4183 {
4184 Elf_Internal_Rela outrel;
b34976b6 4185 bfd_boolean skip, relocate;
c434dee6 4186 asection *sreloc;
70256ad8
AJ
4187
4188 /* When generating a shared object, these relocations
4189 are copied into the output file to be resolved at run
407443a3 4190 time. */
b34976b6
AM
4191 skip = FALSE;
4192 relocate = FALSE;
70256ad8 4193
c629eae0
JJ
4194 outrel.r_offset =
4195 _bfd_elf_section_offset (output_bfd, info, input_section,
c434dee6 4196 rel->r_offset);
c629eae0 4197 if (outrel.r_offset == (bfd_vma) -1)
b34976b6 4198 skip = TRUE;
0fb19cbc 4199 else if (outrel.r_offset == (bfd_vma) -2)
b34976b6 4200 skip = TRUE, relocate = TRUE;
70256ad8
AJ
4201
4202 outrel.r_offset += (input_section->output_section->vma
4203 + input_section->output_offset);
4204
4205 if (skip)
0bb2d96a 4206 memset (&outrel, 0, sizeof outrel);
c434dee6 4207
fd8ab9e5
AJ
4208 /* h->dynindx may be -1 if this symbol was marked to
4209 become local. */
4210 else if (h != NULL
c434dee6 4211 && h->dynindx != -1
d8045f23
NC
4212 && (IS_X86_64_PCREL_TYPE (r_type)
4213 || ! info->shared
4214 || ! SYMBOLIC_BIND (info, h)
4215 || ! h->def_regular))
70256ad8 4216 {
351f65ca 4217 outrel.r_info = htab->r_info (h->dynindx, r_type);
c434dee6 4218 outrel.r_addend = rel->r_addend;
70256ad8
AJ
4219 }
4220 else
4221 {
c434dee6 4222 /* This symbol is local, or marked to become local. */
248775ba 4223 if (r_type == htab->pointer_r_type)
607c0e09 4224 {
b34976b6 4225 relocate = TRUE;
351f65ca 4226 outrel.r_info = htab->r_info (0, R_X86_64_RELATIVE);
607c0e09
AS
4227 outrel.r_addend = relocation + rel->r_addend;
4228 }
64d25c44
L
4229 else if (r_type == R_X86_64_64
4230 && !ABI_64_P (output_bfd))
4231 {
4232 relocate = TRUE;
4233 outrel.r_info = htab->r_info (0,
4234 R_X86_64_RELATIVE64);
4235 outrel.r_addend = relocation + rel->r_addend;
8cf0d2dd
L
4236 /* Check addend overflow. */
4237 if ((outrel.r_addend & 0x80000000)
4238 != (rel->r_addend & 0x80000000))
4239 {
4240 const char *name;
268a8d3a 4241 int addend = rel->r_addend;
8cf0d2dd
L
4242 if (h && h->root.root.string)
4243 name = h->root.root.string;
4244 else
4245 name = bfd_elf_sym_name (input_bfd, symtab_hdr,
4246 sym, NULL);
6f2c9068
L
4247 if (addend < 0)
4248 (*_bfd_error_handler)
268a8d3a 4249 (_("%B: addend -0x%x in relocation %s against "
6f2c9068
L
4250 "symbol `%s' at 0x%lx in section `%A' is "
4251 "out of range"),
4252 input_bfd, input_section, addend,
4253 x86_64_elf_howto_table[r_type].name,
4254 name, (unsigned long) rel->r_offset);
4255 else
4256 (*_bfd_error_handler)
268a8d3a 4257 (_("%B: addend 0x%x in relocation %s against "
6f2c9068
L
4258 "symbol `%s' at 0x%lx in section `%A' is "
4259 "out of range"),
4260 input_bfd, input_section, addend,
4261 x86_64_elf_howto_table[r_type].name,
4262 name, (unsigned long) rel->r_offset);
8cf0d2dd
L
4263 bfd_set_error (bfd_error_bad_value);
4264 return FALSE;
4265 }
64d25c44 4266 }
607c0e09
AS
4267 else
4268 {
4269 long sindx;
4270
8517fae7 4271 if (bfd_is_abs_section (sec))
607c0e09
AS
4272 sindx = 0;
4273 else if (sec == NULL || sec->owner == NULL)
4274 {
4275 bfd_set_error (bfd_error_bad_value);
b34976b6 4276 return FALSE;
607c0e09
AS
4277 }
4278 else
4279 {
4280 asection *osec;
4281
74541ad4
AM
4282 /* We are turning this relocation into one
4283 against a section symbol. It would be
4284 proper to subtract the symbol's value,
4285 osec->vma, from the emitted reloc addend,
4286 but ld.so expects buggy relocs. */
607c0e09
AS
4287 osec = sec->output_section;
4288 sindx = elf_section_data (osec)->dynindx;
74541ad4
AM
4289 if (sindx == 0)
4290 {
4291 asection *oi = htab->elf.text_index_section;
4292 sindx = elf_section_data (oi)->dynindx;
4293 }
4294 BFD_ASSERT (sindx != 0);
607c0e09
AS
4295 }
4296
351f65ca 4297 outrel.r_info = htab->r_info (sindx, r_type);
607c0e09
AS
4298 outrel.r_addend = relocation + rel->r_addend;
4299 }
70256ad8
AJ
4300 }
4301
cbe950e9 4302 sreloc = elf_section_data (input_section)->sreloc;
d8045f23 4303
62d78908
L
4304 if (sreloc == NULL || sreloc->contents == NULL)
4305 {
4306 r = bfd_reloc_notsupported;
4307 goto check_relocation_error;
4308 }
c434dee6 4309
351f65ca 4310 elf_append_rela (output_bfd, sreloc, &outrel);
70256ad8
AJ
4311
4312 /* If this reloc is against an external symbol, we do
4313 not want to fiddle with the addend. Otherwise, we
4314 need to include the symbol value so that it becomes
4315 an addend for the dynamic reloc. */
0f88be7a 4316 if (! relocate)
70256ad8
AJ
4317 continue;
4318 }
4319
4320 break;
4321
bffbf940 4322 case R_X86_64_TLSGD:
67a4f2b7
AO
4323 case R_X86_64_GOTPC32_TLSDESC:
4324 case R_X86_64_TLSDESC_CALL:
bffbf940 4325 case R_X86_64_GOTTPOFF:
bffbf940
JJ
4326 tls_type = GOT_UNKNOWN;
4327 if (h == NULL && local_got_offsets)
351f65ca 4328 tls_type = elf_x86_64_local_got_tls_type (input_bfd) [r_symndx];
bffbf940 4329 else if (h != NULL)
351f65ca 4330 tls_type = elf_x86_64_hash_entry (h)->tls_type;
142411ca 4331
351f65ca
L
4332 if (! elf_x86_64_tls_transition (info, input_bfd,
4333 input_section, contents,
4334 symtab_hdr, sym_hashes,
4335 &r_type, tls_type, rel,
4336 relend, h, r_symndx))
534a31f6 4337 return FALSE;
bffbf940
JJ
4338
4339 if (r_type == R_X86_64_TPOFF32)
4340 {
142411ca
L
4341 bfd_vma roff = rel->r_offset;
4342
bffbf940 4343 BFD_ASSERT (! unresolved_reloc);
142411ca 4344
351f65ca 4345 if (ELF32_R_TYPE (rel->r_info) == R_X86_64_TLSGD)
bffbf940 4346 {
52bc799a 4347 /* GD->LE transition. For 64bit, change
abcf1d52 4348 .byte 0x66; leaq foo@tlsgd(%rip), %rdi
a3fadc9a 4349 .word 0x6666; rex64; call __tls_get_addr
52bc799a 4350 into:
bffbf940 4351 movq %fs:0, %rax
52bc799a
L
4352 leaq foo@tpoff(%rax), %rax
4353 For 32bit, change
4354 leaq foo@tlsgd(%rip), %rdi
4355 .word 0x6666; rex64; call __tls_get_addr
4356 into:
4357 movl %fs:0, %eax
5c98a14e
JJ
4358 leaq foo@tpoff(%rax), %rax
4359 For largepic, change:
4360 leaq foo@tlsgd(%rip), %rdi
4361 movabsq $__tls_get_addr@pltoff, %rax
4362 addq %rbx, %rax
4363 call *%rax
4364 into:
4365 movq %fs:0, %rax
4366 leaq foo@tpoff(%rax), %rax
4367 nopw 0x0(%rax,%rax,1) */
4368 int largepic = 0;
4369 if (ABI_64_P (output_bfd)
4370 && contents[roff + 5] == (bfd_byte) '\xb8')
4371 {
4372 memcpy (contents + roff - 3,
4373 "\x64\x48\x8b\x04\x25\0\0\0\0\x48\x8d\x80"
4374 "\0\0\0\0\x66\x0f\x1f\x44\0", 22);
4375 largepic = 1;
4376 }
4377 else if (ABI_64_P (output_bfd))
52bc799a
L
4378 memcpy (contents + roff - 4,
4379 "\x64\x48\x8b\x04\x25\0\0\0\0\x48\x8d\x80\0\0\0",
4380 16);
4381 else
4382 memcpy (contents + roff - 3,
4383 "\x64\x8b\x04\x25\0\0\0\0\x48\x8d\x80\0\0\0",
4384 15);
eb4ff4d6 4385 bfd_put_32 (output_bfd,
351f65ca 4386 elf_x86_64_tpoff (info, relocation),
5c98a14e
JJ
4387 contents + roff + 8 + largepic);
4388 /* Skip R_X86_64_PC32/R_X86_64_PLT32/R_X86_64_PLTOFF64. */
bffbf940
JJ
4389 rel++;
4390 continue;
4391 }
351f65ca 4392 else if (ELF32_R_TYPE (rel->r_info) == R_X86_64_GOTPC32_TLSDESC)
67a4f2b7
AO
4393 {
4394 /* GDesc -> LE transition.
4395 It's originally something like:
4396 leaq x@tlsdesc(%rip), %rax
4397
4398 Change it to:
c9736ba0 4399 movl $x@tpoff, %rax. */
67a4f2b7 4400
c9736ba0 4401 unsigned int val, type;
67a4f2b7 4402
67a4f2b7 4403 type = bfd_get_8 (input_bfd, contents + roff - 3);
67a4f2b7 4404 val = bfd_get_8 (input_bfd, contents + roff - 1);
67a4f2b7
AO
4405 bfd_put_8 (output_bfd, 0x48 | ((type >> 2) & 1),
4406 contents + roff - 3);
4407 bfd_put_8 (output_bfd, 0xc7, contents + roff - 2);
4408 bfd_put_8 (output_bfd, 0xc0 | ((val >> 3) & 7),
4409 contents + roff - 1);
eb4ff4d6 4410 bfd_put_32 (output_bfd,
351f65ca 4411 elf_x86_64_tpoff (info, relocation),
67a4f2b7
AO
4412 contents + roff);
4413 continue;
4414 }
351f65ca 4415 else if (ELF32_R_TYPE (rel->r_info) == R_X86_64_TLSDESC_CALL)
67a4f2b7
AO
4416 {
4417 /* GDesc -> LE transition.
4418 It's originally:
4419 call *(%rax)
4420 Turn it into:
142411ca 4421 xchg %ax,%ax. */
10efb593 4422 bfd_put_8 (output_bfd, 0x66, contents + roff);
67a4f2b7
AO
4423 bfd_put_8 (output_bfd, 0x90, contents + roff + 1);
4424 continue;
4425 }
351f65ca 4426 else if (ELF32_R_TYPE (rel->r_info) == R_X86_64_GOTTPOFF)
bffbf940 4427 {
bffbf940 4428 /* IE->LE transition:
cf61b747 4429 For 64bit, originally it can be one of:
bffbf940
JJ
4430 movq foo@gottpoff(%rip), %reg
4431 addq foo@gottpoff(%rip), %reg
4432 We change it into:
4433 movq $foo, %reg
4434 leaq foo(%reg), %reg
cf61b747
L
4435 addq $foo, %reg.
4436 For 32bit, originally it can be one of:
4437 movq foo@gottpoff(%rip), %reg
4438 addl foo@gottpoff(%rip), %reg
4439 We change it into:
4440 movq $foo, %reg
4441 leal foo(%reg), %reg
4442 addl $foo, %reg. */
142411ca
L
4443
4444 unsigned int val, type, reg;
4445
cf61b747
L
4446 if (roff >= 3)
4447 val = bfd_get_8 (input_bfd, contents + roff - 3);
4448 else
4449 val = 0;
142411ca
L
4450 type = bfd_get_8 (input_bfd, contents + roff - 2);
4451 reg = bfd_get_8 (input_bfd, contents + roff - 1);
bffbf940 4452 reg >>= 3;
bffbf940
JJ
4453 if (type == 0x8b)
4454 {
4455 /* movq */
4456 if (val == 0x4c)
4457 bfd_put_8 (output_bfd, 0x49,
142411ca 4458 contents + roff - 3);
4a4c5f25
L
4459 else if (!ABI_64_P (output_bfd) && val == 0x44)
4460 bfd_put_8 (output_bfd, 0x41,
4461 contents + roff - 3);
bffbf940 4462 bfd_put_8 (output_bfd, 0xc7,
142411ca 4463 contents + roff - 2);
bffbf940 4464 bfd_put_8 (output_bfd, 0xc0 | reg,
142411ca 4465 contents + roff - 1);
bffbf940
JJ
4466 }
4467 else if (reg == 4)
4468 {
cf61b747
L
4469 /* addq/addl -> addq/addl - addressing with %rsp/%r12
4470 is special */
bffbf940
JJ
4471 if (val == 0x4c)
4472 bfd_put_8 (output_bfd, 0x49,
142411ca 4473 contents + roff - 3);
4a4c5f25
L
4474 else if (!ABI_64_P (output_bfd) && val == 0x44)
4475 bfd_put_8 (output_bfd, 0x41,
4476 contents + roff - 3);
bffbf940 4477 bfd_put_8 (output_bfd, 0x81,
142411ca 4478 contents + roff - 2);
bffbf940 4479 bfd_put_8 (output_bfd, 0xc0 | reg,
142411ca 4480 contents + roff - 1);
bffbf940
JJ
4481 }
4482 else
4483 {
cf61b747 4484 /* addq/addl -> leaq/leal */
bffbf940
JJ
4485 if (val == 0x4c)
4486 bfd_put_8 (output_bfd, 0x4d,
142411ca 4487 contents + roff - 3);
4a4c5f25
L
4488 else if (!ABI_64_P (output_bfd) && val == 0x44)
4489 bfd_put_8 (output_bfd, 0x45,
4490 contents + roff - 3);
bffbf940 4491 bfd_put_8 (output_bfd, 0x8d,
142411ca 4492 contents + roff - 2);
bffbf940 4493 bfd_put_8 (output_bfd, 0x80 | reg | (reg << 3),
142411ca 4494 contents + roff - 1);
bffbf940 4495 }
eb4ff4d6 4496 bfd_put_32 (output_bfd,
351f65ca 4497 elf_x86_64_tpoff (info, relocation),
142411ca 4498 contents + roff);
bffbf940
JJ
4499 continue;
4500 }
142411ca
L
4501 else
4502 BFD_ASSERT (FALSE);
bffbf940
JJ
4503 }
4504
6de2ae4a 4505 if (htab->elf.sgot == NULL)
bffbf940
JJ
4506 abort ();
4507
4508 if (h != NULL)
67a4f2b7
AO
4509 {
4510 off = h->got.offset;
351f65ca 4511 offplt = elf_x86_64_hash_entry (h)->tlsdesc_got;
67a4f2b7 4512 }
bffbf940
JJ
4513 else
4514 {
4515 if (local_got_offsets == NULL)
4516 abort ();
4517
4518 off = local_got_offsets[r_symndx];
67a4f2b7 4519 offplt = local_tlsdesc_gotents[r_symndx];
bffbf940
JJ
4520 }
4521
4522 if ((off & 1) != 0)
4523 off &= ~1;
26e41594 4524 else
bffbf940
JJ
4525 {
4526 Elf_Internal_Rela outrel;
bffbf940 4527 int dr_type, indx;
67a4f2b7 4528 asection *sreloc;
bffbf940 4529
6de2ae4a 4530 if (htab->elf.srelgot == NULL)
bffbf940
JJ
4531 abort ();
4532
67a4f2b7
AO
4533 indx = h && h->dynindx != -1 ? h->dynindx : 0;
4534
4535 if (GOT_TLS_GDESC_P (tls_type))
4536 {
351f65ca 4537 outrel.r_info = htab->r_info (indx, R_X86_64_TLSDESC);
67a4f2b7 4538 BFD_ASSERT (htab->sgotplt_jump_table_size + offplt
6de2ae4a
L
4539 + 2 * GOT_ENTRY_SIZE <= htab->elf.sgotplt->size);
4540 outrel.r_offset = (htab->elf.sgotplt->output_section->vma
4541 + htab->elf.sgotplt->output_offset
67a4f2b7
AO
4542 + offplt
4543 + htab->sgotplt_jump_table_size);
6de2ae4a 4544 sreloc = htab->elf.srelplt;
67a4f2b7 4545 if (indx == 0)
351f65ca 4546 outrel.r_addend = relocation - elf_x86_64_dtpoff_base (info);
67a4f2b7
AO
4547 else
4548 outrel.r_addend = 0;
351f65ca 4549 elf_append_rela (output_bfd, sreloc, &outrel);
67a4f2b7
AO
4550 }
4551
6de2ae4a 4552 sreloc = htab->elf.srelgot;
67a4f2b7 4553
6de2ae4a
L
4554 outrel.r_offset = (htab->elf.sgot->output_section->vma
4555 + htab->elf.sgot->output_offset + off);
bffbf940 4556
67a4f2b7 4557 if (GOT_TLS_GD_P (tls_type))
bffbf940 4558 dr_type = R_X86_64_DTPMOD64;
67a4f2b7
AO
4559 else if (GOT_TLS_GDESC_P (tls_type))
4560 goto dr_done;
bffbf940
JJ
4561 else
4562 dr_type = R_X86_64_TPOFF64;
4563
6de2ae4a 4564 bfd_put_64 (output_bfd, 0, htab->elf.sgot->contents + off);
bffbf940 4565 outrel.r_addend = 0;
67a4f2b7
AO
4566 if ((dr_type == R_X86_64_TPOFF64
4567 || dr_type == R_X86_64_TLSDESC) && indx == 0)
351f65ca
L
4568 outrel.r_addend = relocation - elf_x86_64_dtpoff_base (info);
4569 outrel.r_info = htab->r_info (indx, dr_type);
bffbf940 4570
351f65ca 4571 elf_append_rela (output_bfd, sreloc, &outrel);
bffbf940 4572
67a4f2b7 4573 if (GOT_TLS_GD_P (tls_type))
bffbf940
JJ
4574 {
4575 if (indx == 0)
4576 {
d40d037c 4577 BFD_ASSERT (! unresolved_reloc);
bffbf940 4578 bfd_put_64 (output_bfd,
351f65ca 4579 relocation - elf_x86_64_dtpoff_base (info),
6de2ae4a 4580 htab->elf.sgot->contents + off + GOT_ENTRY_SIZE);
bffbf940
JJ
4581 }
4582 else
4583 {
4584 bfd_put_64 (output_bfd, 0,
6de2ae4a 4585 htab->elf.sgot->contents + off + GOT_ENTRY_SIZE);
351f65ca 4586 outrel.r_info = htab->r_info (indx,
bffbf940
JJ
4587 R_X86_64_DTPOFF64);
4588 outrel.r_offset += GOT_ENTRY_SIZE;
351f65ca 4589 elf_append_rela (output_bfd, sreloc,
464d3bd4 4590 &outrel);
bffbf940
JJ
4591 }
4592 }
4593
67a4f2b7 4594 dr_done:
bffbf940
JJ
4595 if (h != NULL)
4596 h->got.offset |= 1;
4597 else
4598 local_got_offsets[r_symndx] |= 1;
4599 }
4600
67a4f2b7
AO
4601 if (off >= (bfd_vma) -2
4602 && ! GOT_TLS_GDESC_P (tls_type))
bffbf940 4603 abort ();
351f65ca 4604 if (r_type == ELF32_R_TYPE (rel->r_info))
bffbf940 4605 {
67a4f2b7
AO
4606 if (r_type == R_X86_64_GOTPC32_TLSDESC
4607 || r_type == R_X86_64_TLSDESC_CALL)
6de2ae4a
L
4608 relocation = htab->elf.sgotplt->output_section->vma
4609 + htab->elf.sgotplt->output_offset
67a4f2b7
AO
4610 + offplt + htab->sgotplt_jump_table_size;
4611 else
6de2ae4a
L
4612 relocation = htab->elf.sgot->output_section->vma
4613 + htab->elf.sgot->output_offset + off;
b34976b6 4614 unresolved_reloc = FALSE;
bffbf940 4615 }
142411ca 4616 else
67a4f2b7 4617 {
142411ca 4618 bfd_vma roff = rel->r_offset;
67a4f2b7 4619
351f65ca 4620 if (ELF32_R_TYPE (rel->r_info) == R_X86_64_TLSGD)
142411ca 4621 {
52bc799a 4622 /* GD->IE transition. For 64bit, change
142411ca
L
4623 .byte 0x66; leaq foo@tlsgd(%rip), %rdi
4624 .word 0x6666; rex64; call __tls_get_addr@plt
52bc799a 4625 into:
142411ca 4626 movq %fs:0, %rax
52bc799a
L
4627 addq foo@gottpoff(%rip), %rax
4628 For 32bit, change
4629 leaq foo@tlsgd(%rip), %rdi
4630 .word 0x6666; rex64; call __tls_get_addr@plt
4631 into:
4632 movl %fs:0, %eax
5c98a14e
JJ
4633 addq foo@gottpoff(%rip), %rax
4634 For largepic, change:
4635 leaq foo@tlsgd(%rip), %rdi
4636 movabsq $__tls_get_addr@pltoff, %rax
4637 addq %rbx, %rax
4638 call *%rax
4639 into:
4640 movq %fs:0, %rax
4641 addq foo@gottpoff(%rax), %rax
4642 nopw 0x0(%rax,%rax,1) */
4643 int largepic = 0;
4644 if (ABI_64_P (output_bfd)
4645 && contents[roff + 5] == (bfd_byte) '\xb8')
4646 {
4647 memcpy (contents + roff - 3,
4648 "\x64\x48\x8b\x04\x25\0\0\0\0\x48\x03\x05"
4649 "\0\0\0\0\x66\x0f\x1f\x44\0", 22);
4650 largepic = 1;
4651 }
4652 else if (ABI_64_P (output_bfd))
52bc799a
L
4653 memcpy (contents + roff - 4,
4654 "\x64\x48\x8b\x04\x25\0\0\0\0\x48\x03\x05\0\0\0",
4655 16);
4656 else
4657 memcpy (contents + roff - 3,
4658 "\x64\x8b\x04\x25\0\0\0\0\x48\x03\x05\0\0\0",
4659 15);
142411ca 4660
6de2ae4a
L
4661 relocation = (htab->elf.sgot->output_section->vma
4662 + htab->elf.sgot->output_offset + off
142411ca 4663 - roff
5c98a14e 4664 - largepic
142411ca
L
4665 - input_section->output_section->vma
4666 - input_section->output_offset
4667 - 12);
4668 bfd_put_32 (output_bfd, relocation,
5c98a14e
JJ
4669 contents + roff + 8 + largepic);
4670 /* Skip R_X86_64_PLT32/R_X86_64_PLTOFF64. */
142411ca
L
4671 rel++;
4672 continue;
4673 }
351f65ca 4674 else if (ELF32_R_TYPE (rel->r_info) == R_X86_64_GOTPC32_TLSDESC)
142411ca
L
4675 {
4676 /* GDesc -> IE transition.
4677 It's originally something like:
4678 leaq x@tlsdesc(%rip), %rax
67a4f2b7 4679
142411ca 4680 Change it to:
c9736ba0 4681 movq x@gottpoff(%rip), %rax # before xchg %ax,%ax. */
67a4f2b7 4682
142411ca
L
4683 /* Now modify the instruction as appropriate. To
4684 turn a leaq into a movq in the form we use it, it
4685 suffices to change the second byte from 0x8d to
4686 0x8b. */
4687 bfd_put_8 (output_bfd, 0x8b, contents + roff - 2);
4688
4689 bfd_put_32 (output_bfd,
6de2ae4a
L
4690 htab->elf.sgot->output_section->vma
4691 + htab->elf.sgot->output_offset + off
142411ca
L
4692 - rel->r_offset
4693 - input_section->output_section->vma
4694 - input_section->output_offset
4695 - 4,
4696 contents + roff);
4697 continue;
4698 }
351f65ca 4699 else if (ELF32_R_TYPE (rel->r_info) == R_X86_64_TLSDESC_CALL)
142411ca
L
4700 {
4701 /* GDesc -> IE transition.
4702 It's originally:
4703 call *(%rax)
4704
4705 Change it to:
c9736ba0 4706 xchg %ax, %ax. */
142411ca 4707
142411ca
L
4708 bfd_put_8 (output_bfd, 0x66, contents + roff);
4709 bfd_put_8 (output_bfd, 0x90, contents + roff + 1);
4710 continue;
4711 }
4712 else
4713 BFD_ASSERT (FALSE);
67a4f2b7 4714 }
bffbf940
JJ
4715 break;
4716
4717 case R_X86_64_TLSLD:
351f65ca
L
4718 if (! elf_x86_64_tls_transition (info, input_bfd,
4719 input_section, contents,
4720 symtab_hdr, sym_hashes,
4721 &r_type, GOT_UNKNOWN,
4722 rel, relend, h, r_symndx))
142411ca 4723 return FALSE;
a3fadc9a 4724
142411ca
L
4725 if (r_type != R_X86_64_TLSLD)
4726 {
bffbf940 4727 /* LD->LE transition:
a3fadc9a 4728 leaq foo@tlsld(%rip), %rdi; call __tls_get_addr.
52bc799a
L
4729 For 64bit, we change it into:
4730 .word 0x6666; .byte 0x66; movq %fs:0, %rax.
4731 For 32bit, we change it into:
5c98a14e
JJ
4732 nopl 0x0(%rax); movl %fs:0, %eax.
4733 For largepic, change:
4734 leaq foo@tlsgd(%rip), %rdi
4735 movabsq $__tls_get_addr@pltoff, %rax
4736 addq %rbx, %rax
4737 call *%rax
4738 into:
4739 data32 data32 data32 nopw %cs:0x0(%rax,%rax,1)
4740 movq %fs:0, %eax */
142411ca
L
4741
4742 BFD_ASSERT (r_type == R_X86_64_TPOFF32);
5c98a14e
JJ
4743 if (ABI_64_P (output_bfd)
4744 && contents[rel->r_offset + 5] == (bfd_byte) '\xb8')
4745 memcpy (contents + rel->r_offset - 3,
4746 "\x66\x66\x66\x66\x2e\x0f\x1f\x84\0\0\0\0\0"
4747 "\x64\x48\x8b\x04\x25\0\0\0", 22);
4748 else if (ABI_64_P (output_bfd))
52bc799a
L
4749 memcpy (contents + rel->r_offset - 3,
4750 "\x66\x66\x66\x64\x48\x8b\x04\x25\0\0\0", 12);
4751 else
4752 memcpy (contents + rel->r_offset - 3,
4753 "\x0f\x1f\x40\x00\x64\x8b\x04\x25\0\0\0", 12);
5c98a14e 4754 /* Skip R_X86_64_PC32/R_X86_64_PLT32/R_X86_64_PLTOFF64. */
bffbf940
JJ
4755 rel++;
4756 continue;
4757 }
4758
6de2ae4a 4759 if (htab->elf.sgot == NULL)
bffbf940
JJ
4760 abort ();
4761
4762 off = htab->tls_ld_got.offset;
4763 if (off & 1)
4764 off &= ~1;
4765 else
4766 {
4767 Elf_Internal_Rela outrel;
bffbf940 4768
6de2ae4a 4769 if (htab->elf.srelgot == NULL)
bffbf940
JJ
4770 abort ();
4771
6de2ae4a
L
4772 outrel.r_offset = (htab->elf.sgot->output_section->vma
4773 + htab->elf.sgot->output_offset + off);
bffbf940
JJ
4774
4775 bfd_put_64 (output_bfd, 0,
6de2ae4a 4776 htab->elf.sgot->contents + off);
bffbf940 4777 bfd_put_64 (output_bfd, 0,
6de2ae4a 4778 htab->elf.sgot->contents + off + GOT_ENTRY_SIZE);
351f65ca 4779 outrel.r_info = htab->r_info (0, R_X86_64_DTPMOD64);
bffbf940 4780 outrel.r_addend = 0;
351f65ca 4781 elf_append_rela (output_bfd, htab->elf.srelgot,
464d3bd4 4782 &outrel);
bffbf940
JJ
4783 htab->tls_ld_got.offset |= 1;
4784 }
6de2ae4a
L
4785 relocation = htab->elf.sgot->output_section->vma
4786 + htab->elf.sgot->output_offset + off;
b34976b6 4787 unresolved_reloc = FALSE;
bffbf940
JJ
4788 break;
4789
4790 case R_X86_64_DTPOFF32:
1d85728f 4791 if (!info->executable|| (input_section->flags & SEC_CODE) == 0)
351f65ca 4792 relocation -= elf_x86_64_dtpoff_base (info);
bffbf940 4793 else
351f65ca 4794 relocation = elf_x86_64_tpoff (info, relocation);
bffbf940
JJ
4795 break;
4796
4797 case R_X86_64_TPOFF32:
6769d501 4798 case R_X86_64_TPOFF64:
9b769489 4799 BFD_ASSERT (info->executable);
351f65ca 4800 relocation = elf_x86_64_tpoff (info, relocation);
bffbf940
JJ
4801 break;
4802
a69ed7f7
L
4803 case R_X86_64_DTPOFF64:
4804 BFD_ASSERT ((input_section->flags & SEC_CODE) == 0);
4805 relocation -= elf_x86_64_dtpoff_base (info);
4806 break;
4807
70256ad8
AJ
4808 default:
4809 break;
4810 }
8d88c4ca 4811
239e1f3a
AM
4812 /* Dynamic relocs are not propagated for SEC_DEBUGGING sections
4813 because such sections are not SEC_ALLOC and thus ld.so will
4814 not process them. */
c434dee6 4815 if (unresolved_reloc
239e1f3a 4816 && !((input_section->flags & SEC_DEBUGGING) != 0
1d5316ab
AM
4817 && h->def_dynamic)
4818 && _bfd_elf_section_offset (output_bfd, info, input_section,
4819 rel->r_offset) != (bfd_vma) -1)
a040981f
L
4820 {
4821 (*_bfd_error_handler)
4822 (_("%B(%A+0x%lx): unresolvable %s relocation against symbol `%s'"),
4823 input_bfd,
4824 input_section,
4825 (long) rel->r_offset,
4826 howto->name,
4827 h->root.root.string);
4828 return FALSE;
4829 }
c434dee6 4830
cbe950e9 4831do_relocation:
8d88c4ca 4832 r = _bfd_final_link_relocate (howto, input_bfd, input_section,
c434dee6
AJ
4833 contents, rel->r_offset,
4834 relocation, rel->r_addend);
8d88c4ca 4835
62d78908 4836check_relocation_error:
8d88c4ca 4837 if (r != bfd_reloc_ok)
8da6118f 4838 {
c434dee6
AJ
4839 const char *name;
4840
4841 if (h != NULL)
4842 name = h->root.root.string;
4843 else
8da6118f 4844 {
c434dee6
AJ
4845 name = bfd_elf_string_from_elf_section (input_bfd,
4846 symtab_hdr->sh_link,
4847 sym->st_name);
4848 if (name == NULL)
b34976b6 4849 return FALSE;
c434dee6
AJ
4850 if (*name == '\0')
4851 name = bfd_section_name (input_bfd, sec);
4852 }
4853
4854 if (r == bfd_reloc_overflow)
4855 {
c434dee6 4856 if (! ((*info->callbacks->reloc_overflow)
dfeffb9f
L
4857 (info, (h ? &h->root : NULL), name, howto->name,
4858 (bfd_vma) 0, input_bfd, input_section,
4859 rel->r_offset)))
b34976b6 4860 return FALSE;
c434dee6
AJ
4861 }
4862 else
4863 {
4864 (*_bfd_error_handler)
bb95161d 4865 (_("%B(%A+0x%lx): reloc against `%s': error %d"),
d003868e 4866 input_bfd, input_section,
c434dee6 4867 (long) rel->r_offset, name, (int) r);
b34976b6 4868 return FALSE;
8da6118f
KH
4869 }
4870 }
8d88c4ca 4871 }
70256ad8 4872
b34976b6 4873 return TRUE;
70256ad8
AJ
4874}
4875
4876/* Finish up dynamic symbol handling. We set the contents of various
4877 dynamic sections here. */
4878
b34976b6 4879static bfd_boolean
351f65ca
L
4880elf_x86_64_finish_dynamic_symbol (bfd *output_bfd,
4881 struct bfd_link_info *info,
4882 struct elf_link_hash_entry *h,
220cf809 4883 Elf_Internal_Sym *sym ATTRIBUTE_UNUSED)
70256ad8 4884{
351f65ca 4885 struct elf_x86_64_link_hash_table *htab;
0ff2b86e
L
4886 const struct elf_x86_64_backend_data *abed;
4887 bfd_boolean use_plt_bnd;
dd7e64d4 4888 struct elf_x86_64_link_hash_entry *eh;
70256ad8 4889
351f65ca 4890 htab = elf_x86_64_hash_table (info);
4dfe6ac6
NC
4891 if (htab == NULL)
4892 return FALSE;
70256ad8 4893
0ff2b86e
L
4894 /* Use MPX backend data in case of BND relocation. Use .plt_bnd
4895 section only if there is .plt section. */
4896 use_plt_bnd = htab->elf.splt != NULL && htab->plt_bnd != NULL;
4897 abed = (use_plt_bnd
4898 ? &elf_x86_64_bnd_arch_bed
4899 : get_elf_x86_64_backend_data (output_bfd));
4900
dd7e64d4
L
4901 eh = (struct elf_x86_64_link_hash_entry *) h;
4902
70256ad8
AJ
4903 if (h->plt.offset != (bfd_vma) -1)
4904 {
70256ad8 4905 bfd_vma plt_index;
0ff2b86e
L
4906 bfd_vma got_offset, plt_offset, plt_plt_offset, plt_got_offset;
4907 bfd_vma plt_plt_insn_end, plt_got_insn_size;
70256ad8 4908 Elf_Internal_Rela rela;
947216bf 4909 bfd_byte *loc;
0ff2b86e 4910 asection *plt, *gotplt, *relplt, *resolved_plt;
351f65ca 4911 const struct elf_backend_data *bed;
5974eba6 4912 bfd_vma plt_got_pcrel_offset;
cbe950e9
L
4913
4914 /* When building a static executable, use .iplt, .igot.plt and
4915 .rela.iplt sections for STT_GNU_IFUNC symbols. */
6de2ae4a 4916 if (htab->elf.splt != NULL)
cbe950e9 4917 {
6de2ae4a
L
4918 plt = htab->elf.splt;
4919 gotplt = htab->elf.sgotplt;
4920 relplt = htab->elf.srelplt;
cbe950e9
L
4921 }
4922 else
4923 {
6de2ae4a
L
4924 plt = htab->elf.iplt;
4925 gotplt = htab->elf.igotplt;
4926 relplt = htab->elf.irelplt;
cbe950e9 4927 }
70256ad8
AJ
4928
4929 /* This symbol has an entry in the procedure linkage table. Set
407443a3 4930 it up. */
cbe950e9
L
4931 if ((h->dynindx == -1
4932 && !((h->forced_local || info->executable)
4933 && h->def_regular
4934 && h->type == STT_GNU_IFUNC))
4935 || plt == NULL
4936 || gotplt == NULL
4937 || relplt == NULL)
cec7f46a 4938 abort ();
70256ad8
AJ
4939
4940 /* Get the index in the procedure linkage table which
4941 corresponds to this symbol. This is the index of this symbol
4942 in all the symbols for which we are making plt entries. The
cbe950e9 4943 first entry in the procedure linkage table is reserved.
6bbec505 4944
cbe950e9 4945 Get the offset into the .got table of the entry that
407443a3 4946 corresponds to this function. Each .got entry is GOT_ENTRY_SIZE
cbe950e9
L
4947 bytes. The first three are reserved for the dynamic linker.
4948
4949 For static executables, we don't reserve anything. */
4950
6de2ae4a 4951 if (plt == htab->elf.splt)
cbe950e9 4952 {
eed180f8 4953 got_offset = h->plt.offset / abed->plt_entry_size - 1;
e1f98742 4954 got_offset = (got_offset + 3) * GOT_ENTRY_SIZE;
cbe950e9
L
4955 }
4956 else
4957 {
eed180f8 4958 got_offset = h->plt.offset / abed->plt_entry_size;
e1f98742 4959 got_offset = got_offset * GOT_ENTRY_SIZE;
cbe950e9 4960 }
70256ad8 4961
0ff2b86e
L
4962 plt_plt_insn_end = abed->plt_plt_insn_end;
4963 plt_plt_offset = abed->plt_plt_offset;
4964 plt_got_insn_size = abed->plt_got_insn_size;
4965 plt_got_offset = abed->plt_got_offset;
4966 if (use_plt_bnd)
4967 {
4968 /* Use the second PLT with BND relocations. */
4969 const bfd_byte *plt_entry, *plt2_entry;
0ff2b86e
L
4970
4971 if (eh->has_bnd_reloc)
4972 {
4973 plt_entry = elf_x86_64_bnd_plt_entry;
4974 plt2_entry = elf_x86_64_bnd_plt2_entry;
4975 }
4976 else
4977 {
4978 plt_entry = elf_x86_64_legacy_plt_entry;
4979 plt2_entry = elf_x86_64_legacy_plt2_entry;
4980
4981 /* Subtract 1 since there is no BND prefix. */
4982 plt_plt_insn_end -= 1;
4983 plt_plt_offset -= 1;
4984 plt_got_insn_size -= 1;
4985 plt_got_offset -= 1;
4986 }
4987
4988 BFD_ASSERT (sizeof (elf_x86_64_bnd_plt_entry)
4989 == sizeof (elf_x86_64_legacy_plt_entry));
4990
4991 /* Fill in the entry in the procedure linkage table. */
4992 memcpy (plt->contents + h->plt.offset,
4993 plt_entry, sizeof (elf_x86_64_legacy_plt_entry));
4994 /* Fill in the entry in the second PLT. */
4995 memcpy (htab->plt_bnd->contents + eh->plt_bnd.offset,
4996 plt2_entry, sizeof (elf_x86_64_legacy_plt2_entry));
4997
4998 resolved_plt = htab->plt_bnd;
4999 plt_offset = eh->plt_bnd.offset;
5000 }
5001 else
5002 {
5003 /* Fill in the entry in the procedure linkage table. */
5004 memcpy (plt->contents + h->plt.offset, abed->plt_entry,
5005 abed->plt_entry_size);
5006
5007 resolved_plt = plt;
5008 plt_offset = h->plt.offset;
5009 }
eed180f8
RM
5010
5011 /* Insert the relocation positions of the plt section. */
5012
5013 /* Put offset the PC-relative instruction referring to the GOT entry,
5014 subtracting the size of that instruction. */
ab7fede8
L
5015 plt_got_pcrel_offset = (gotplt->output_section->vma
5016 + gotplt->output_offset
5017 + got_offset
5018 - resolved_plt->output_section->vma
5019 - resolved_plt->output_offset
5020 - plt_offset
5021 - plt_got_insn_size);
5022
5023 /* Check PC-relative offset overflow in PLT entry. */
5974eba6 5024 if ((plt_got_pcrel_offset + 0x80000000) > 0xffffffff)
ab7fede8
L
5025 info->callbacks->einfo (_("%F%B: PC-relative offset overflow in PLT entry for `%s'\n"),
5026 output_bfd, h->root.root.string);
5027
5028 bfd_put_32 (output_bfd, plt_got_pcrel_offset,
0ff2b86e 5029 resolved_plt->contents + plt_offset + plt_got_offset);
cbe950e9 5030
653165cc 5031 /* Fill in the entry in the global offset table, initially this
eed180f8 5032 points to the second part of the PLT entry. */
cbe950e9
L
5033 bfd_put_64 (output_bfd, (plt->output_section->vma
5034 + plt->output_offset
eed180f8 5035 + h->plt.offset + abed->plt_lazy_offset),
cbe950e9 5036 gotplt->contents + got_offset);
70256ad8
AJ
5037
5038 /* Fill in the entry in the .rela.plt section. */
cbe950e9
L
5039 rela.r_offset = (gotplt->output_section->vma
5040 + gotplt->output_offset
70256ad8 5041 + got_offset);
cbe950e9
L
5042 if (h->dynindx == -1
5043 || ((info->executable
5044 || ELF_ST_VISIBILITY (h->other) != STV_DEFAULT)
5045 && h->def_regular
5046 && h->type == STT_GNU_IFUNC))
5047 {
5048 /* If an STT_GNU_IFUNC symbol is locally defined, generate
5049 R_X86_64_IRELATIVE instead of R_X86_64_JUMP_SLOT. */
351f65ca 5050 rela.r_info = htab->r_info (0, R_X86_64_IRELATIVE);
cbe950e9
L
5051 rela.r_addend = (h->root.u.def.value
5052 + h->root.u.def.section->output_section->vma
5053 + h->root.u.def.section->output_offset);
e1f98742
L
5054 /* R_X86_64_IRELATIVE comes last. */
5055 plt_index = htab->next_irelative_index--;
cbe950e9
L
5056 }
5057 else
5058 {
351f65ca 5059 rela.r_info = htab->r_info (h->dynindx, R_X86_64_JUMP_SLOT);
cbe950e9 5060 rela.r_addend = 0;
e1f98742
L
5061 plt_index = htab->next_jump_slot_index++;
5062 }
5063
5064 /* Don't fill PLT entry for static executables. */
5065 if (plt == htab->elf.splt)
5066 {
35a14c6b
L
5067 bfd_vma plt0_offset = h->plt.offset + plt_plt_insn_end;
5068
e1f98742
L
5069 /* Put relocation index. */
5070 bfd_put_32 (output_bfd, plt_index,
eed180f8 5071 plt->contents + h->plt.offset + abed->plt_reloc_offset);
35a14c6b
L
5072
5073 /* Put offset for jmp .PLT0 and check for overflow. We don't
5074 check relocation index for overflow since branch displacement
5075 will overflow first. */
5076 if (plt0_offset > 0x80000000)
5077 info->callbacks->einfo (_("%F%B: branch displacement overflow in PLT entry for `%s'\n"),
5078 output_bfd, h->root.root.string);
5079 bfd_put_32 (output_bfd, - plt0_offset,
0ff2b86e 5080 plt->contents + h->plt.offset + plt_plt_offset);
cbe950e9 5081 }
351f65ca
L
5082
5083 bed = get_elf_backend_data (output_bfd);
5084 loc = relplt->contents + plt_index * bed->s->sizeof_rela;
82e96e07 5085 bed->s->swap_reloca_out (output_bfd, &rela, loc);
dd7e64d4
L
5086 }
5087 else if (eh->plt_got.offset != (bfd_vma) -1)
5088 {
5089 bfd_vma got_offset, plt_offset, plt_got_offset, plt_got_insn_size;
5090 asection *plt, *got;
5091 bfd_boolean got_after_plt;
5092 int32_t got_pcrel_offset;
5093 const bfd_byte *got_plt_entry;
5094
5095 /* Set the entry in the GOT procedure linkage table. */
5096 plt = htab->plt_got;
5097 got = htab->elf.sgot;
5098 got_offset = h->got.offset;
5099
5100 if (got_offset == (bfd_vma) -1
5101 || h->type == STT_GNU_IFUNC
5102 || plt == NULL
5103 || got == NULL)
5104 abort ();
70256ad8 5105
dd7e64d4
L
5106 /* Use the second PLT entry template for the GOT PLT since they
5107 are the identical. */
5108 plt_got_insn_size = elf_x86_64_bnd_arch_bed.plt_got_insn_size;
5109 plt_got_offset = elf_x86_64_bnd_arch_bed.plt_got_offset;
5110 if (eh->has_bnd_reloc)
5111 got_plt_entry = elf_x86_64_bnd_plt2_entry;
5112 else
70256ad8 5113 {
dd7e64d4
L
5114 got_plt_entry = elf_x86_64_legacy_plt2_entry;
5115
5116 /* Subtract 1 since there is no BND prefix. */
5117 plt_got_insn_size -= 1;
5118 plt_got_offset -= 1;
70256ad8 5119 }
dd7e64d4
L
5120
5121 /* Fill in the entry in the GOT procedure linkage table. */
5122 plt_offset = eh->plt_got.offset;
5123 memcpy (plt->contents + plt_offset,
5124 got_plt_entry, sizeof (elf_x86_64_legacy_plt2_entry));
5125
5126 /* Put offset the PC-relative instruction referring to the GOT
5127 entry, subtracting the size of that instruction. */
5128 got_pcrel_offset = (got->output_section->vma
5129 + got->output_offset
5130 + got_offset
5131 - plt->output_section->vma
5132 - plt->output_offset
5133 - plt_offset
5134 - plt_got_insn_size);
5135
5136 /* Check PC-relative offset overflow in GOT PLT entry. */
5137 got_after_plt = got->output_section->vma > plt->output_section->vma;
5138 if ((got_after_plt && got_pcrel_offset < 0)
5139 || (!got_after_plt && got_pcrel_offset > 0))
5140 info->callbacks->einfo (_("%F%B: PC-relative offset overflow in GOT PLT entry for `%s'\n"),
5141 output_bfd, h->root.root.string);
5142
5143 bfd_put_32 (output_bfd, got_pcrel_offset,
5144 plt->contents + plt_offset + plt_got_offset);
5145 }
5146
5147 if (!h->def_regular
5148 && (h->plt.offset != (bfd_vma) -1
5149 || eh->plt_got.offset != (bfd_vma) -1))
5150 {
5151 /* Mark the symbol as undefined, rather than as defined in
5152 the .plt section. Leave the value if there were any
5153 relocations where pointer equality matters (this is a clue
5154 for the dynamic linker, to make function pointer
5155 comparisons work between an application and shared
5156 library), otherwise set it to zero. If a function is only
5157 called from a binary, there is no need to slow down
5158 shared libraries because of that. */
5159 sym->st_shndx = SHN_UNDEF;
5160 if (!h->pointer_equality_needed)
5161 sym->st_value = 0;
70256ad8
AJ
5162 }
5163
bffbf940 5164 if (h->got.offset != (bfd_vma) -1
351f65ca
L
5165 && ! GOT_TLS_GD_ANY_P (elf_x86_64_hash_entry (h)->tls_type)
5166 && elf_x86_64_hash_entry (h)->tls_type != GOT_TLS_IE)
053579d7 5167 {
053579d7
AJ
5168 Elf_Internal_Rela rela;
5169
5170 /* This symbol has an entry in the global offset table. Set it
bffbf940 5171 up. */
6de2ae4a 5172 if (htab->elf.sgot == NULL || htab->elf.srelgot == NULL)
c434dee6 5173 abort ();
053579d7 5174
6de2ae4a
L
5175 rela.r_offset = (htab->elf.sgot->output_section->vma
5176 + htab->elf.sgot->output_offset
dc810e39 5177 + (h->got.offset &~ (bfd_vma) 1));
053579d7
AJ
5178
5179 /* If this is a static link, or it is a -Bsymbolic link and the
5180 symbol is defined locally or was forced to be local because
5181 of a version file, we just want to emit a RELATIVE reloc.
5182 The entry in the global offset table will already have been
5183 initialized in the relocate_section function. */
710ab287 5184 if (h->def_regular
0018b0a3
L
5185 && h->type == STT_GNU_IFUNC)
5186 {
710ab287
L
5187 if (info->shared)
5188 {
5189 /* Generate R_X86_64_GLOB_DAT. */
5190 goto do_glob_dat;
5191 }
5192 else
5193 {
90d60710
L
5194 asection *plt;
5195
710ab287
L
5196 if (!h->pointer_equality_needed)
5197 abort ();
5198
5199 /* For non-shared object, we can't use .got.plt, which
5200 contains the real function addres if we need pointer
5201 equality. We load the GOT entry with the PLT entry. */
90d60710 5202 plt = htab->elf.splt ? htab->elf.splt : htab->elf.iplt;
710ab287
L
5203 bfd_put_64 (output_bfd, (plt->output_section->vma
5204 + plt->output_offset
5205 + h->plt.offset),
6de2ae4a 5206 htab->elf.sgot->contents + h->got.offset);
710ab287
L
5207 return TRUE;
5208 }
0018b0a3
L
5209 }
5210 else if (info->shared
5211 && SYMBOL_REFERENCES_LOCAL (info, h))
053579d7 5212 {
41bed6dd
L
5213 if (!h->def_regular)
5214 return FALSE;
cc78d0af 5215 BFD_ASSERT((h->got.offset & 1) != 0);
351f65ca 5216 rela.r_info = htab->r_info (0, R_X86_64_RELATIVE);
053579d7
AJ
5217 rela.r_addend = (h->root.u.def.value
5218 + h->root.u.def.section->output_section->vma
5219 + h->root.u.def.section->output_offset);
5220 }
5221 else
5222 {
5223 BFD_ASSERT((h->got.offset & 1) == 0);
710ab287 5224do_glob_dat:
c434dee6 5225 bfd_put_64 (output_bfd, (bfd_vma) 0,
6de2ae4a 5226 htab->elf.sgot->contents + h->got.offset);
351f65ca 5227 rela.r_info = htab->r_info (h->dynindx, R_X86_64_GLOB_DAT);
053579d7
AJ
5228 rela.r_addend = 0;
5229 }
5230
351f65ca 5231 elf_append_rela (output_bfd, htab->elf.srelgot, &rela);
053579d7
AJ
5232 }
5233
f5385ebf 5234 if (h->needs_copy)
70256ad8 5235 {
70256ad8
AJ
5236 Elf_Internal_Rela rela;
5237
5238 /* This symbol needs a copy reloc. Set it up. */
5239
c434dee6
AJ
5240 if (h->dynindx == -1
5241 || (h->root.type != bfd_link_hash_defined
5242 && h->root.type != bfd_link_hash_defweak)
5243 || htab->srelbss == NULL)
5244 abort ();
70256ad8
AJ
5245
5246 rela.r_offset = (h->root.u.def.value
5247 + h->root.u.def.section->output_section->vma
5248 + h->root.u.def.section->output_offset);
351f65ca 5249 rela.r_info = htab->r_info (h->dynindx, R_X86_64_COPY);
70256ad8 5250 rela.r_addend = 0;
351f65ca 5251 elf_append_rela (output_bfd, htab->srelbss, &rela);
70256ad8
AJ
5252 }
5253
b34976b6 5254 return TRUE;
70256ad8
AJ
5255}
5256
c25bc9fc
L
5257/* Finish up local dynamic symbol handling. We set the contents of
5258 various dynamic sections here. */
5259
5260static bfd_boolean
351f65ca 5261elf_x86_64_finish_local_dynamic_symbol (void **slot, void *inf)
c25bc9fc
L
5262{
5263 struct elf_link_hash_entry *h
5264 = (struct elf_link_hash_entry *) *slot;
5265 struct bfd_link_info *info
eed180f8 5266 = (struct bfd_link_info *) inf;
c25bc9fc 5267
351f65ca 5268 return elf_x86_64_finish_dynamic_symbol (info->output_bfd,
c25bc9fc
L
5269 info, h, NULL);
5270}
5271
c434dee6
AJ
5272/* Used to decide how to sort relocs in an optimal manner for the
5273 dynamic linker, before writing them out. */
5274
5275static enum elf_reloc_type_class
7e612e98
AM
5276elf_x86_64_reloc_type_class (const struct bfd_link_info *info ATTRIBUTE_UNUSED,
5277 const asection *rel_sec ATTRIBUTE_UNUSED,
5278 const Elf_Internal_Rela *rela)
c434dee6 5279{
351f65ca 5280 switch ((int) ELF32_R_TYPE (rela->r_info))
c434dee6
AJ
5281 {
5282 case R_X86_64_RELATIVE:
1da80baa 5283 case R_X86_64_RELATIVE64:
c434dee6
AJ
5284 return reloc_class_relative;
5285 case R_X86_64_JUMP_SLOT:
5286 return reloc_class_plt;
5287 case R_X86_64_COPY:
5288 return reloc_class_copy;
5289 default:
5290 return reloc_class_normal;
5291 }
5292}
5293
70256ad8
AJ
5294/* Finish up the dynamic sections. */
5295
b34976b6 5296static bfd_boolean
351f65ca
L
5297elf_x86_64_finish_dynamic_sections (bfd *output_bfd,
5298 struct bfd_link_info *info)
70256ad8 5299{
351f65ca 5300 struct elf_x86_64_link_hash_table *htab;
70256ad8
AJ
5301 bfd *dynobj;
5302 asection *sdyn;
0ff2b86e 5303 const struct elf_x86_64_backend_data *abed;
70256ad8 5304
351f65ca 5305 htab = elf_x86_64_hash_table (info);
4dfe6ac6
NC
5306 if (htab == NULL)
5307 return FALSE;
5308
0ff2b86e
L
5309 /* Use MPX backend data in case of BND relocation. Use .plt_bnd
5310 section only if there is .plt section. */
5311 abed = (htab->elf.splt != NULL && htab->plt_bnd != NULL
5312 ? &elf_x86_64_bnd_arch_bed
5313 : get_elf_x86_64_backend_data (output_bfd));
5314
c434dee6 5315 dynobj = htab->elf.dynobj;
3d4d4302 5316 sdyn = bfd_get_linker_section (dynobj, ".dynamic");
70256ad8 5317
c434dee6 5318 if (htab->elf.dynamic_sections_created)
70256ad8 5319 {
82e96e07
L
5320 bfd_byte *dyncon, *dynconend;
5321 const struct elf_backend_data *bed;
5322 bfd_size_type sizeof_dyn;
70256ad8 5323
6de2ae4a 5324 if (sdyn == NULL || htab->elf.sgot == NULL)
c434dee6 5325 abort ();
70256ad8 5326
82e96e07
L
5327 bed = get_elf_backend_data (dynobj);
5328 sizeof_dyn = bed->s->sizeof_dyn;
5329 dyncon = sdyn->contents;
5330 dynconend = sdyn->contents + sdyn->size;
5331 for (; dyncon < dynconend; dyncon += sizeof_dyn)
70256ad8
AJ
5332 {
5333 Elf_Internal_Dyn dyn;
70256ad8
AJ
5334 asection *s;
5335
82e96e07 5336 (*bed->s->swap_dyn_in) (dynobj, dyncon, &dyn);
70256ad8
AJ
5337
5338 switch (dyn.d_tag)
5339 {
5340 default:
053579d7 5341 continue;
70256ad8
AJ
5342
5343 case DT_PLTGOT:
6de2ae4a 5344 s = htab->elf.sgotplt;
8c37241b 5345 dyn.d_un.d_ptr = s->output_section->vma + s->output_offset;
c434dee6 5346 break;
70256ad8
AJ
5347
5348 case DT_JMPREL:
6de2ae4a 5349 dyn.d_un.d_ptr = htab->elf.srelplt->output_section->vma;
c434dee6 5350 break;
70256ad8 5351
c434dee6 5352 case DT_PLTRELSZ:
6de2ae4a 5353 s = htab->elf.srelplt->output_section;
eea6121a 5354 dyn.d_un.d_val = s->size;
70256ad8
AJ
5355 break;
5356
5357 case DT_RELASZ:
c434dee6
AJ
5358 /* The procedure linkage table relocs (DT_JMPREL) should
5359 not be included in the overall relocs (DT_RELA).
5360 Therefore, we override the DT_RELASZ entry here to
5361 make it not include the JMPREL relocs. Since the
5362 linker script arranges for .rela.plt to follow all
5363 other relocation sections, we don't have to worry
5364 about changing the DT_RELA entry. */
6de2ae4a 5365 if (htab->elf.srelplt != NULL)
70256ad8 5366 {
6de2ae4a 5367 s = htab->elf.srelplt->output_section;
eea6121a 5368 dyn.d_un.d_val -= s->size;
70256ad8
AJ
5369 }
5370 break;
67a4f2b7
AO
5371
5372 case DT_TLSDESC_PLT:
6de2ae4a 5373 s = htab->elf.splt;
67a4f2b7
AO
5374 dyn.d_un.d_ptr = s->output_section->vma + s->output_offset
5375 + htab->tlsdesc_plt;
5376 break;
5377
5378 case DT_TLSDESC_GOT:
6de2ae4a 5379 s = htab->elf.sgot;
67a4f2b7
AO
5380 dyn.d_un.d_ptr = s->output_section->vma + s->output_offset
5381 + htab->tlsdesc_got;
5382 break;
70256ad8 5383 }
c434dee6 5384
82e96e07 5385 (*bed->s->swap_dyn_out) (output_bfd, &dyn, dyncon);
70256ad8
AJ
5386 }
5387
c434dee6 5388 /* Fill in the special first entry in the procedure linkage table. */
6de2ae4a 5389 if (htab->elf.splt && htab->elf.splt->size > 0)
70256ad8 5390 {
653165cc 5391 /* Fill in the first entry in the procedure linkage table. */
eed180f8
RM
5392 memcpy (htab->elf.splt->contents,
5393 abed->plt0_entry, abed->plt_entry_size);
653165cc
AJ
5394 /* Add offset for pushq GOT+8(%rip), since the instruction
5395 uses 6 bytes subtract this value. */
5396 bfd_put_32 (output_bfd,
6de2ae4a
L
5397 (htab->elf.sgotplt->output_section->vma
5398 + htab->elf.sgotplt->output_offset
653165cc 5399 + 8
6de2ae4a
L
5400 - htab->elf.splt->output_section->vma
5401 - htab->elf.splt->output_offset
653165cc 5402 - 6),
eed180f8
RM
5403 htab->elf.splt->contents + abed->plt0_got1_offset);
5404 /* Add offset for the PC-relative instruction accessing GOT+16,
5405 subtracting the offset to the end of that instruction. */
653165cc 5406 bfd_put_32 (output_bfd,
6de2ae4a
L
5407 (htab->elf.sgotplt->output_section->vma
5408 + htab->elf.sgotplt->output_offset
653165cc 5409 + 16
6de2ae4a
L
5410 - htab->elf.splt->output_section->vma
5411 - htab->elf.splt->output_offset
eed180f8
RM
5412 - abed->plt0_got2_insn_end),
5413 htab->elf.splt->contents + abed->plt0_got2_offset);
653165cc 5414
eed180f8
RM
5415 elf_section_data (htab->elf.splt->output_section)
5416 ->this_hdr.sh_entsize = abed->plt_entry_size;
67a4f2b7
AO
5417
5418 if (htab->tlsdesc_plt)
5419 {
5420 bfd_put_64 (output_bfd, (bfd_vma) 0,
6de2ae4a 5421 htab->elf.sgot->contents + htab->tlsdesc_got);
67a4f2b7 5422
6de2ae4a 5423 memcpy (htab->elf.splt->contents + htab->tlsdesc_plt,
eed180f8 5424 abed->plt0_entry, abed->plt_entry_size);
67a4f2b7
AO
5425
5426 /* Add offset for pushq GOT+8(%rip), since the
5427 instruction uses 6 bytes subtract this value. */
5428 bfd_put_32 (output_bfd,
6de2ae4a
L
5429 (htab->elf.sgotplt->output_section->vma
5430 + htab->elf.sgotplt->output_offset
67a4f2b7 5431 + 8
6de2ae4a
L
5432 - htab->elf.splt->output_section->vma
5433 - htab->elf.splt->output_offset
67a4f2b7
AO
5434 - htab->tlsdesc_plt
5435 - 6),
eed180f8
RM
5436 htab->elf.splt->contents
5437 + htab->tlsdesc_plt + abed->plt0_got1_offset);
5438 /* Add offset for the PC-relative instruction accessing GOT+TDG,
5439 where TGD stands for htab->tlsdesc_got, subtracting the offset
5440 to the end of that instruction. */
67a4f2b7 5441 bfd_put_32 (output_bfd,
6de2ae4a
L
5442 (htab->elf.sgot->output_section->vma
5443 + htab->elf.sgot->output_offset
67a4f2b7 5444 + htab->tlsdesc_got
6de2ae4a
L
5445 - htab->elf.splt->output_section->vma
5446 - htab->elf.splt->output_offset
67a4f2b7 5447 - htab->tlsdesc_plt
eed180f8
RM
5448 - abed->plt0_got2_insn_end),
5449 htab->elf.splt->contents
5450 + htab->tlsdesc_plt + abed->plt0_got2_offset);
67a4f2b7 5451 }
70256ad8 5452 }
70256ad8
AJ
5453 }
5454
0ff2b86e
L
5455 if (htab->plt_bnd != NULL)
5456 elf_section_data (htab->plt_bnd->output_section)
5457 ->this_hdr.sh_entsize = sizeof (elf_x86_64_bnd_plt2_entry);
5458
6de2ae4a 5459 if (htab->elf.sgotplt)
70256ad8 5460 {
56d4289c
L
5461 if (bfd_is_abs_section (htab->elf.sgotplt->output_section))
5462 {
5463 (*_bfd_error_handler)
5464 (_("discarded output section: `%A'"), htab->elf.sgotplt);
5465 return FALSE;
5466 }
5467
c434dee6 5468 /* Fill in the first three entries in the global offset table. */
6de2ae4a 5469 if (htab->elf.sgotplt->size > 0)
c434dee6
AJ
5470 {
5471 /* Set the first entry in the global offset table to the address of
5472 the dynamic section. */
5473 if (sdyn == NULL)
6de2ae4a 5474 bfd_put_64 (output_bfd, (bfd_vma) 0, htab->elf.sgotplt->contents);
c434dee6
AJ
5475 else
5476 bfd_put_64 (output_bfd,
5477 sdyn->output_section->vma + sdyn->output_offset,
6de2ae4a 5478 htab->elf.sgotplt->contents);
c434dee6 5479 /* Write GOT[1] and GOT[2], needed for the dynamic linker. */
6de2ae4a
L
5480 bfd_put_64 (output_bfd, (bfd_vma) 0, htab->elf.sgotplt->contents + GOT_ENTRY_SIZE);
5481 bfd_put_64 (output_bfd, (bfd_vma) 0, htab->elf.sgotplt->contents + GOT_ENTRY_SIZE*2);
c434dee6 5482 }
70256ad8 5483
6de2ae4a 5484 elf_section_data (htab->elf.sgotplt->output_section)->this_hdr.sh_entsize =
c434dee6
AJ
5485 GOT_ENTRY_SIZE;
5486 }
70256ad8 5487
e41b3a13 5488 /* Adjust .eh_frame for .plt section. */
9a2a56cc
AM
5489 if (htab->plt_eh_frame != NULL
5490 && htab->plt_eh_frame->contents != NULL)
e41b3a13
JJ
5491 {
5492 if (htab->elf.splt != NULL
5493 && htab->elf.splt->size != 0
5494 && (htab->elf.splt->flags & SEC_EXCLUDE) == 0
5495 && htab->elf.splt->output_section != NULL
5496 && htab->plt_eh_frame->output_section != NULL)
5497 {
5498 bfd_vma plt_start = htab->elf.splt->output_section->vma;
5499 bfd_vma eh_frame_start = htab->plt_eh_frame->output_section->vma
5500 + htab->plt_eh_frame->output_offset
5501 + PLT_FDE_START_OFFSET;
5502 bfd_put_signed_32 (dynobj, plt_start - eh_frame_start,
5503 htab->plt_eh_frame->contents
5504 + PLT_FDE_START_OFFSET);
5505 }
dbaa2011 5506 if (htab->plt_eh_frame->sec_info_type == SEC_INFO_TYPE_EH_FRAME)
e41b3a13
JJ
5507 {
5508 if (! _bfd_elf_write_section_eh_frame (output_bfd, info,
5509 htab->plt_eh_frame,
5510 htab->plt_eh_frame->contents))
5511 return FALSE;
5512 }
5513 }
5514
6de2ae4a
L
5515 if (htab->elf.sgot && htab->elf.sgot->size > 0)
5516 elf_section_data (htab->elf.sgot->output_section)->this_hdr.sh_entsize
8c37241b
JJ
5517 = GOT_ENTRY_SIZE;
5518
c25bc9fc
L
5519 /* Fill PLT and GOT entries for local STT_GNU_IFUNC symbols. */
5520 htab_traverse (htab->loc_hash_table,
351f65ca 5521 elf_x86_64_finish_local_dynamic_symbol,
c25bc9fc
L
5522 info);
5523
b34976b6 5524 return TRUE;
8d88c4ca
NC
5525}
5526
3972882e 5527/* Return an array of PLT entry symbol values. */
4c45e5c9 5528
3972882e
L
5529static bfd_vma *
5530elf_x86_64_get_plt_sym_val (bfd *abfd, asymbol **dynsyms, asection *plt,
5531 asection *relplt)
4c45e5c9 5532{
3972882e
L
5533 bfd_boolean (*slurp_relocs) (bfd *, asection *, asymbol **, bfd_boolean);
5534 arelent *p;
5535 long count, i;
5536 bfd_vma *plt_sym_val;
144bed8d 5537 bfd_vma plt_offset;
3972882e
L
5538 bfd_byte *plt_contents;
5539 const struct elf_x86_64_backend_data *bed;
5540 Elf_Internal_Shdr *hdr;
5541 asection *plt_bnd;
144bed8d 5542
3972882e
L
5543 /* Get the .plt section contents. PLT passed down may point to the
5544 .plt.bnd section. Make sure that PLT always points to the .plt
5545 section. */
5546 plt_bnd = bfd_get_section_by_name (abfd, ".plt.bnd");
5547 if (plt_bnd)
5548 {
5549 if (plt != plt_bnd)
5550 abort ();
5551 plt = bfd_get_section_by_name (abfd, ".plt");
5552 if (plt == NULL)
5553 abort ();
5554 bed = &elf_x86_64_bnd_arch_bed;
5555 }
5556 else
5557 bed = get_elf_x86_64_backend_data (abfd);
cca5b8b6 5558
3972882e
L
5559 plt_contents = (bfd_byte *) bfd_malloc (plt->size);
5560 if (plt_contents == NULL)
5561 return NULL;
5562 if (!bfd_get_section_contents (abfd, (asection *) plt,
5563 plt_contents, 0, plt->size))
144bed8d 5564 {
3972882e
L
5565bad_return:
5566 free (plt_contents);
5567 return NULL;
144bed8d
L
5568 }
5569
3972882e
L
5570 slurp_relocs = get_elf_backend_data (abfd)->s->slurp_reloc_table;
5571 if (! (*slurp_relocs) (abfd, relplt, dynsyms, TRUE))
5572 goto bad_return;
144bed8d 5573
3972882e
L
5574 hdr = &elf_section_data (relplt)->this_hdr;
5575 count = relplt->size / hdr->sh_entsize;
144bed8d 5576
3972882e
L
5577 plt_sym_val = (bfd_vma *) bfd_malloc (sizeof (bfd_vma) * count);
5578 if (plt_sym_val == NULL)
5579 goto bad_return;
cca5b8b6 5580
35181b3e 5581 for (i = 0; i < count; i++)
3972882e 5582 plt_sym_val[i] = -1;
cca5b8b6 5583
3972882e
L
5584 plt_offset = bed->plt_entry_size;
5585 p = relplt->relocation;
5586 for (i = 0; i < count; i++, p++)
144bed8d 5587 {
3972882e 5588 long reloc_index;
144bed8d 5589
6f25f223 5590 /* Skip unknown relocation. */
533d0af0 5591 if (p->howto == NULL)
6f25f223 5592 continue;
533d0af0 5593
3972882e
L
5594 if (p->howto->type != R_X86_64_JUMP_SLOT
5595 && p->howto->type != R_X86_64_IRELATIVE)
5596 continue;
144bed8d 5597
3972882e
L
5598 reloc_index = H_GET_32 (abfd, (plt_contents + plt_offset
5599 + bed->plt_reloc_offset));
5600 if (reloc_index >= count)
5601 abort ();
5602 if (plt_bnd)
144bed8d
L
5603 {
5604 /* This is the index in .plt section. */
5605 long plt_index = plt_offset / bed->plt_entry_size;
3972882e
L
5606 /* Store VMA + the offset in .plt.bnd section. */
5607 plt_sym_val[reloc_index] =
5608 (plt_bnd->vma
5609 + (plt_index - 1) * sizeof (elf_x86_64_legacy_plt2_entry));
144bed8d 5610 }
3972882e
L
5611 else
5612 plt_sym_val[reloc_index] = plt->vma + plt_offset;
144bed8d
L
5613 plt_offset += bed->plt_entry_size;
5614 }
5615
3972882e
L
5616 free (plt_contents);
5617
5618 return plt_sym_val;
4c45e5c9 5619}
8df9fc9d 5620
0ff2b86e
L
5621/* Similar to _bfd_elf_get_synthetic_symtab, with .plt.bnd section
5622 support. */
5623
5624static long
5625elf_x86_64_get_synthetic_symtab (bfd *abfd,
5626 long symcount,
5627 asymbol **syms,
5628 long dynsymcount,
5629 asymbol **dynsyms,
5630 asymbol **ret)
5631{
3972882e
L
5632 /* Pass the .plt.bnd section to _bfd_elf_ifunc_get_synthetic_symtab
5633 as PLT if it exists. */
5634 asection *plt = bfd_get_section_by_name (abfd, ".plt.bnd");
0ff2b86e 5635 if (plt == NULL)
3972882e
L
5636 plt = bfd_get_section_by_name (abfd, ".plt");
5637 return _bfd_elf_ifunc_get_synthetic_symtab (abfd, symcount, syms,
5638 dynsymcount, dynsyms, ret,
5639 plt,
5640 elf_x86_64_get_plt_sym_val);
0ff2b86e
L
5641}
5642
d2b2c203
DJ
5643/* Handle an x86-64 specific section when reading an object file. This
5644 is called when elfcode.h finds a section with an unknown type. */
5645
5646static bfd_boolean
0c723101
L
5647elf_x86_64_section_from_shdr (bfd *abfd, Elf_Internal_Shdr *hdr,
5648 const char *name, int shindex)
d2b2c203
DJ
5649{
5650 if (hdr->sh_type != SHT_X86_64_UNWIND)
5651 return FALSE;
5652
6dc132d9 5653 if (! _bfd_elf_make_section_from_shdr (abfd, hdr, name, shindex))
d2b2c203
DJ
5654 return FALSE;
5655
5656 return TRUE;
5657}
5658
3b22753a
L
5659/* Hook called by the linker routine which adds symbols from an object
5660 file. We use it to put SHN_X86_64_LCOMMON items in .lbss, instead
5661 of .bss. */
5662
5663static bfd_boolean
351f65ca
L
5664elf_x86_64_add_symbol_hook (bfd *abfd,
5665 struct bfd_link_info *info,
5666 Elf_Internal_Sym *sym,
5667 const char **namep ATTRIBUTE_UNUSED,
5668 flagword *flagsp ATTRIBUTE_UNUSED,
5669 asection **secp,
5670 bfd_vma *valp)
3b22753a
L
5671{
5672 asection *lcomm;
5673
5674 switch (sym->st_shndx)
5675 {
5676 case SHN_X86_64_LCOMMON:
5677 lcomm = bfd_get_section_by_name (abfd, "LARGE_COMMON");
5678 if (lcomm == NULL)
5679 {
5680 lcomm = bfd_make_section_with_flags (abfd,
5681 "LARGE_COMMON",
5682 (SEC_ALLOC
5683 | SEC_IS_COMMON
5684 | SEC_LINKER_CREATED));
5685 if (lcomm == NULL)
5686 return FALSE;
5687 elf_section_flags (lcomm) |= SHF_X86_64_LARGE;
5688 }
5689 *secp = lcomm;
5690 *valp = sym->st_size;
c35bdf6e 5691 return TRUE;
3b22753a 5692 }
d8045f23 5693
f1885d1e
AM
5694 if ((ELF_ST_TYPE (sym->st_info) == STT_GNU_IFUNC
5695 || ELF_ST_BIND (sym->st_info) == STB_GNU_UNIQUE)
5696 && (abfd->flags & DYNAMIC) == 0
5697 && bfd_get_flavour (info->output_bfd) == bfd_target_elf_flavour)
f64b2e8d 5698 elf_tdata (info->output_bfd)->has_gnu_symbols = TRUE;
d8045f23 5699
3b22753a
L
5700 return TRUE;
5701}
5702
5703
5704/* Given a BFD section, try to locate the corresponding ELF section
5705 index. */
5706
5707static bfd_boolean
351f65ca
L
5708elf_x86_64_elf_section_from_bfd_section (bfd *abfd ATTRIBUTE_UNUSED,
5709 asection *sec, int *index_return)
3b22753a
L
5710{
5711 if (sec == &_bfd_elf_large_com_section)
5712 {
91d6fa6a 5713 *index_return = SHN_X86_64_LCOMMON;
3b22753a
L
5714 return TRUE;
5715 }
5716 return FALSE;
5717}
5718
5719/* Process a symbol. */
5720
5721static void
351f65ca
L
5722elf_x86_64_symbol_processing (bfd *abfd ATTRIBUTE_UNUSED,
5723 asymbol *asym)
3b22753a
L
5724{
5725 elf_symbol_type *elfsym = (elf_symbol_type *) asym;
5726
5727 switch (elfsym->internal_elf_sym.st_shndx)
5728 {
5729 case SHN_X86_64_LCOMMON:
5730 asym->section = &_bfd_elf_large_com_section;
5731 asym->value = elfsym->internal_elf_sym.st_size;
5732 /* Common symbol doesn't set BSF_GLOBAL. */
5733 asym->flags &= ~BSF_GLOBAL;
5734 break;
5735 }
5736}
5737
5738static bfd_boolean
351f65ca 5739elf_x86_64_common_definition (Elf_Internal_Sym *sym)
3b22753a
L
5740{
5741 return (sym->st_shndx == SHN_COMMON
5742 || sym->st_shndx == SHN_X86_64_LCOMMON);
5743}
5744
5745static unsigned int
351f65ca 5746elf_x86_64_common_section_index (asection *sec)
3b22753a
L
5747{
5748 if ((elf_section_flags (sec) & SHF_X86_64_LARGE) == 0)
5749 return SHN_COMMON;
5750 else
5751 return SHN_X86_64_LCOMMON;
5752}
5753
5754static asection *
351f65ca 5755elf_x86_64_common_section (asection *sec)
3b22753a
L
5756{
5757 if ((elf_section_flags (sec) & SHF_X86_64_LARGE) == 0)
5758 return bfd_com_section_ptr;
5759 else
5760 return &_bfd_elf_large_com_section;
5761}
5762
5763static bfd_boolean
5d13b3b3
AM
5764elf_x86_64_merge_symbol (struct elf_link_hash_entry *h,
5765 const Elf_Internal_Sym *sym,
351f65ca 5766 asection **psec,
5d13b3b3
AM
5767 bfd_boolean newdef,
5768 bfd_boolean olddef,
351f65ca 5769 bfd *oldbfd,
5d13b3b3 5770 const asection *oldsec)
3b22753a
L
5771{
5772 /* A normal common symbol and a large common symbol result in a
00492999
L
5773 normal common symbol. We turn the large common symbol into a
5774 normal one. */
5d13b3b3 5775 if (!olddef
3b22753a 5776 && h->root.type == bfd_link_hash_common
5d13b3b3
AM
5777 && !newdef
5778 && bfd_is_com_section (*psec)
5779 && oldsec != *psec)
3b22753a 5780 {
00492999 5781 if (sym->st_shndx == SHN_COMMON
5d13b3b3 5782 && (elf_section_flags (oldsec) & SHF_X86_64_LARGE) != 0)
00492999
L
5783 {
5784 h->root.u.c.p->section
5785 = bfd_make_section_old_way (oldbfd, "COMMON");
5786 h->root.u.c.p->section->flags = SEC_ALLOC;
5787 }
5788 else if (sym->st_shndx == SHN_X86_64_LCOMMON
5d13b3b3
AM
5789 && (elf_section_flags (oldsec) & SHF_X86_64_LARGE) == 0)
5790 *psec = bfd_com_section_ptr;
3b22753a
L
5791 }
5792
5793 return TRUE;
5794}
5795
5796static int
351f65ca
L
5797elf_x86_64_additional_program_headers (bfd *abfd,
5798 struct bfd_link_info *info ATTRIBUTE_UNUSED)
3b22753a
L
5799{
5800 asection *s;
9a2e389a 5801 int count = 0;
3b22753a
L
5802
5803 /* Check to see if we need a large readonly segment. */
5804 s = bfd_get_section_by_name (abfd, ".lrodata");
5805 if (s && (s->flags & SEC_LOAD))
5806 count++;
5807
5808 /* Check to see if we need a large data segment. Since .lbss sections
5809 is placed right after the .bss section, there should be no need for
5810 a large data segment just because of .lbss. */
5811 s = bfd_get_section_by_name (abfd, ".ldata");
5812 if (s && (s->flags & SEC_LOAD))
5813 count++;
5814
5815 return count;
5816}
5817
fdc90cb4
JJ
5818/* Return TRUE if symbol should be hashed in the `.gnu.hash' section. */
5819
5820static bfd_boolean
351f65ca 5821elf_x86_64_hash_symbol (struct elf_link_hash_entry *h)
fdc90cb4
JJ
5822{
5823 if (h->plt.offset != (bfd_vma) -1
5824 && !h->def_regular
5825 && !h->pointer_equality_needed)
5826 return FALSE;
5827
5828 return _bfd_elf_hash_symbol (h);
5829}
5830
c543bf9a
L
5831/* Return TRUE iff relocations for INPUT are compatible with OUTPUT. */
5832
5833static bfd_boolean
5834elf_x86_64_relocs_compatible (const bfd_target *input,
5835 const bfd_target *output)
5836{
5837 return ((xvec_get_elf_backend_data (input)->s->elfclass
5838 == xvec_get_elf_backend_data (output)->s->elfclass)
5839 && _bfd_elf_relocs_compatible (input, output));
5840}
5841
9a2e389a 5842static const struct bfd_elf_special_section
351f65ca 5843 elf_x86_64_special_sections[]=
3b22753a 5844{
0112cd26
NC
5845 { STRING_COMMA_LEN (".gnu.linkonce.lb"), -2, SHT_NOBITS, SHF_ALLOC + SHF_WRITE + SHF_X86_64_LARGE},
5846 { STRING_COMMA_LEN (".gnu.linkonce.lr"), -2, SHT_PROGBITS, SHF_ALLOC + SHF_X86_64_LARGE},
5847 { STRING_COMMA_LEN (".gnu.linkonce.lt"), -2, SHT_PROGBITS, SHF_ALLOC + SHF_EXECINSTR + SHF_X86_64_LARGE},
5848 { STRING_COMMA_LEN (".lbss"), -2, SHT_NOBITS, SHF_ALLOC + SHF_WRITE + SHF_X86_64_LARGE},
5849 { STRING_COMMA_LEN (".ldata"), -2, SHT_PROGBITS, SHF_ALLOC + SHF_WRITE + SHF_X86_64_LARGE},
5850 { STRING_COMMA_LEN (".lrodata"), -2, SHT_PROGBITS, SHF_ALLOC + SHF_X86_64_LARGE},
5851 { NULL, 0, 0, 0, 0 }
3b22753a
L
5852};
5853
6d00b590 5854#define TARGET_LITTLE_SYM x86_64_elf64_vec
70256ad8
AJ
5855#define TARGET_LITTLE_NAME "elf64-x86-64"
5856#define ELF_ARCH bfd_arch_i386
ae95ffa6 5857#define ELF_TARGET_ID X86_64_ELF_DATA
70256ad8 5858#define ELF_MACHINE_CODE EM_X86_64
f7661549 5859#define ELF_MAXPAGESIZE 0x200000
2043964e 5860#define ELF_MINPAGESIZE 0x1000
24718e3b 5861#define ELF_COMMONPAGESIZE 0x1000
70256ad8
AJ
5862
5863#define elf_backend_can_gc_sections 1
51b64d56 5864#define elf_backend_can_refcount 1
70256ad8
AJ
5865#define elf_backend_want_got_plt 1
5866#define elf_backend_plt_readonly 1
5867#define elf_backend_want_plt_sym 0
5868#define elf_backend_got_header_size (GOT_ENTRY_SIZE*3)
b491616a 5869#define elf_backend_rela_normal 1
e41b3a13 5870#define elf_backend_plt_alignment 4
ca3fe95e 5871#define elf_backend_extern_protected_data 1
70256ad8 5872
351f65ca 5873#define elf_info_to_howto elf_x86_64_info_to_howto
70256ad8 5874
70256ad8 5875#define bfd_elf64_bfd_link_hash_table_create \
351f65ca 5876 elf_x86_64_link_hash_table_create
351f65ca 5877#define bfd_elf64_bfd_reloc_type_lookup elf_x86_64_reloc_type_lookup
157090f7 5878#define bfd_elf64_bfd_reloc_name_lookup \
351f65ca 5879 elf_x86_64_reloc_name_lookup
70256ad8 5880
351f65ca 5881#define elf_backend_adjust_dynamic_symbol elf_x86_64_adjust_dynamic_symbol
c543bf9a 5882#define elf_backend_relocs_compatible elf_x86_64_relocs_compatible
351f65ca
L
5883#define elf_backend_check_relocs elf_x86_64_check_relocs
5884#define elf_backend_copy_indirect_symbol elf_x86_64_copy_indirect_symbol
5885#define elf_backend_create_dynamic_sections elf_x86_64_create_dynamic_sections
5886#define elf_backend_finish_dynamic_sections elf_x86_64_finish_dynamic_sections
5887#define elf_backend_finish_dynamic_symbol elf_x86_64_finish_dynamic_symbol
5888#define elf_backend_gc_mark_hook elf_x86_64_gc_mark_hook
5889#define elf_backend_gc_sweep_hook elf_x86_64_gc_sweep_hook
5890#define elf_backend_grok_prstatus elf_x86_64_grok_prstatus
5891#define elf_backend_grok_psinfo elf_x86_64_grok_psinfo
8fd79e71
L
5892#ifdef CORE_HEADER
5893#define elf_backend_write_core_note elf_x86_64_write_core_note
5894#endif
351f65ca
L
5895#define elf_backend_reloc_type_class elf_x86_64_reloc_type_class
5896#define elf_backend_relocate_section elf_x86_64_relocate_section
5897#define elf_backend_size_dynamic_sections elf_x86_64_size_dynamic_sections
5898#define elf_backend_always_size_sections elf_x86_64_always_size_sections
74541ad4 5899#define elf_backend_init_index_section _bfd_elf_init_1_index_section
407443a3 5900#define elf_backend_object_p elf64_x86_64_elf_object_p
351f65ca 5901#define bfd_elf64_mkobject elf_x86_64_mkobject
0ff2b86e 5902#define bfd_elf64_get_synthetic_symtab elf_x86_64_get_synthetic_symtab
8d88c4ca 5903
d2b2c203 5904#define elf_backend_section_from_shdr \
351f65ca 5905 elf_x86_64_section_from_shdr
d2b2c203 5906
3b22753a 5907#define elf_backend_section_from_bfd_section \
351f65ca 5908 elf_x86_64_elf_section_from_bfd_section
3b22753a 5909#define elf_backend_add_symbol_hook \
351f65ca 5910 elf_x86_64_add_symbol_hook
3b22753a 5911#define elf_backend_symbol_processing \
351f65ca 5912 elf_x86_64_symbol_processing
3b22753a 5913#define elf_backend_common_section_index \
351f65ca 5914 elf_x86_64_common_section_index
3b22753a 5915#define elf_backend_common_section \
351f65ca 5916 elf_x86_64_common_section
3b22753a 5917#define elf_backend_common_definition \
351f65ca 5918 elf_x86_64_common_definition
3b22753a 5919#define elf_backend_merge_symbol \
351f65ca 5920 elf_x86_64_merge_symbol
3b22753a 5921#define elf_backend_special_sections \
351f65ca 5922 elf_x86_64_special_sections
3b22753a 5923#define elf_backend_additional_program_headers \
351f65ca 5924 elf_x86_64_additional_program_headers
fdc90cb4 5925#define elf_backend_hash_symbol \
351f65ca 5926 elf_x86_64_hash_symbol
3b22753a 5927
8d88c4ca 5928#include "elf64-target.h"
9d7cbccd
NC
5929
5930/* FreeBSD support. */
5931
5932#undef TARGET_LITTLE_SYM
6d00b590 5933#define TARGET_LITTLE_SYM x86_64_elf64_fbsd_vec
9d7cbccd
NC
5934#undef TARGET_LITTLE_NAME
5935#define TARGET_LITTLE_NAME "elf64-x86-64-freebsd"
5936
d1036acb
L
5937#undef ELF_OSABI
5938#define ELF_OSABI ELFOSABI_FREEBSD
9d7cbccd 5939
9d7cbccd
NC
5940#undef elf64_bed
5941#define elf64_bed elf64_x86_64_fbsd_bed
5942
5943#include "elf64-target.h"
8a9036a4 5944
a6cc6b3b
RO
5945/* Solaris 2 support. */
5946
5947#undef TARGET_LITTLE_SYM
6d00b590 5948#define TARGET_LITTLE_SYM x86_64_elf64_sol2_vec
a6cc6b3b
RO
5949#undef TARGET_LITTLE_NAME
5950#define TARGET_LITTLE_NAME "elf64-x86-64-sol2"
5951
5952/* Restore default: we cannot use ELFOSABI_SOLARIS, otherwise ELFOSABI_NONE
5953 objects won't be recognized. */
5954#undef ELF_OSABI
5955
5956#undef elf64_bed
5957#define elf64_bed elf64_x86_64_sol2_bed
5958
7dc98aea
RO
5959/* The 64-bit static TLS arena size is rounded to the nearest 16-byte
5960 boundary. */
5961#undef elf_backend_static_tls_alignment
5962#define elf_backend_static_tls_alignment 16
5963
a6cc6b3b
RO
5964/* The Solaris 2 ABI requires a plt symbol on all platforms.
5965
5966 Cf. Linker and Libraries Guide, Ch. 2, Link-Editor, Generating the Output
5967 File, p.63. */
5968#undef elf_backend_want_plt_sym
5969#define elf_backend_want_plt_sym 1
5970
5971#include "elf64-target.h"
5972
8059fb19
RM
5973/* Native Client support. */
5974
64b384e1
RM
5975static bfd_boolean
5976elf64_x86_64_nacl_elf_object_p (bfd *abfd)
5977{
5978 /* Set the right machine number for a NaCl x86-64 ELF64 file. */
5979 bfd_default_set_arch_mach (abfd, bfd_arch_i386, bfd_mach_x86_64_nacl);
5980 return TRUE;
5981}
5982
8059fb19 5983#undef TARGET_LITTLE_SYM
6d00b590 5984#define TARGET_LITTLE_SYM x86_64_elf64_nacl_vec
8059fb19
RM
5985#undef TARGET_LITTLE_NAME
5986#define TARGET_LITTLE_NAME "elf64-x86-64-nacl"
5987#undef elf64_bed
5988#define elf64_bed elf64_x86_64_nacl_bed
5989
5990#undef ELF_MAXPAGESIZE
5991#undef ELF_MINPAGESIZE
5992#undef ELF_COMMONPAGESIZE
5993#define ELF_MAXPAGESIZE 0x10000
5994#define ELF_MINPAGESIZE 0x10000
5995#define ELF_COMMONPAGESIZE 0x10000
5996
5997/* Restore defaults. */
5998#undef ELF_OSABI
5999#undef elf_backend_static_tls_alignment
6000#undef elf_backend_want_plt_sym
6001#define elf_backend_want_plt_sym 0
6002
6003/* NaCl uses substantially different PLT entries for the same effects. */
6004
6005#undef elf_backend_plt_alignment
6006#define elf_backend_plt_alignment 5
6007#define NACL_PLT_ENTRY_SIZE 64
6008#define NACLMASK 0xe0 /* 32-byte alignment mask. */
6009
6010static const bfd_byte elf_x86_64_nacl_plt0_entry[NACL_PLT_ENTRY_SIZE] =
6011 {
6012 0xff, 0x35, 8, 0, 0, 0, /* pushq GOT+8(%rip) */
6013 0x4c, 0x8b, 0x1d, 16, 0, 0, 0, /* mov GOT+16(%rip), %r11 */
6014 0x41, 0x83, 0xe3, NACLMASK, /* and $-32, %r11d */
6015 0x4d, 0x01, 0xfb, /* add %r15, %r11 */
6016 0x41, 0xff, 0xe3, /* jmpq *%r11 */
6017
ea2d813e 6018 /* 9-byte nop sequence to pad out to the next 32-byte boundary. */
70cc877f 6019 0x66, 0x0f, 0x1f, 0x84, 0, 0, 0, 0, 0, /* nopw 0x0(%rax,%rax,1) */
ea2d813e
RM
6020
6021 /* 32 bytes of nop to pad out to the standard size. */
8059fb19
RM
6022 0x66, 0x66, 0x66, 0x66, 0x66, 0x66, /* excess data32 prefixes */
6023 0x2e, 0x0f, 0x1f, 0x84, 0, 0, 0, 0, 0, /* nopw %cs:0x0(%rax,%rax,1) */
6024 0x66, 0x66, 0x66, 0x66, 0x66, 0x66, /* excess data32 prefixes */
6025 0x2e, 0x0f, 0x1f, 0x84, 0, 0, 0, 0, 0, /* nopw %cs:0x0(%rax,%rax,1) */
ea2d813e
RM
6026 0x66, /* excess data32 prefix */
6027 0x90 /* nop */
8059fb19
RM
6028 };
6029
6030static const bfd_byte elf_x86_64_nacl_plt_entry[NACL_PLT_ENTRY_SIZE] =
6031 {
6032 0x4c, 0x8b, 0x1d, 0, 0, 0, 0, /* mov name@GOTPCREL(%rip),%r11 */
6033 0x41, 0x83, 0xe3, NACLMASK, /* and $-32, %r11d */
6034 0x4d, 0x01, 0xfb, /* add %r15, %r11 */
6035 0x41, 0xff, 0xe3, /* jmpq *%r11 */
6036
6037 /* 15-byte nop sequence to pad out to the next 32-byte boundary. */
6038 0x66, 0x66, 0x66, 0x66, 0x66, 0x66, /* excess data32 prefixes */
6039 0x2e, 0x0f, 0x1f, 0x84, 0, 0, 0, 0, 0, /* nopw %cs:0x0(%rax,%rax,1) */
6040
6041 /* Lazy GOT entries point here (32-byte aligned). */
6042 0x68, /* pushq immediate */
6043 0, 0, 0, 0, /* replaced with index into relocation table. */
6044 0xe9, /* jmp relative */
6045 0, 0, 0, 0, /* replaced with offset to start of .plt0. */
6046
6047 /* 22 bytes of nop to pad out to the standard size. */
6048 0x66, 0x66, 0x66, 0x66, 0x66, 0x66, /* excess data32 prefixes */
6049 0x2e, 0x0f, 0x1f, 0x84, 0, 0, 0, 0, 0, /* nopw %cs:0x0(%rax,%rax,1) */
6050 0x0f, 0x1f, 0x80, 0, 0, 0, 0, /* nopl 0x0(%rax) */
6051 };
6052
6053/* .eh_frame covering the .plt section. */
6054
6055static const bfd_byte elf_x86_64_nacl_eh_frame_plt[] =
6056 {
6057#if (PLT_CIE_LENGTH != 20 \
6058 || PLT_FDE_LENGTH != 36 \
6059 || PLT_FDE_START_OFFSET != 4 + PLT_CIE_LENGTH + 8 \
6060 || PLT_FDE_LEN_OFFSET != 4 + PLT_CIE_LENGTH + 12)
6061# error "Need elf_x86_64_backend_data parameters for eh_frame_plt offsets!"
6062#endif
6063 PLT_CIE_LENGTH, 0, 0, 0, /* CIE length */
6064 0, 0, 0, 0, /* CIE ID */
6065 1, /* CIE version */
6066 'z', 'R', 0, /* Augmentation string */
6067 1, /* Code alignment factor */
6068 0x78, /* Data alignment factor */
6069 16, /* Return address column */
6070 1, /* Augmentation size */
6071 DW_EH_PE_pcrel | DW_EH_PE_sdata4, /* FDE encoding */
6072 DW_CFA_def_cfa, 7, 8, /* DW_CFA_def_cfa: r7 (rsp) ofs 8 */
6073 DW_CFA_offset + 16, 1, /* DW_CFA_offset: r16 (rip) at cfa-8 */
6074 DW_CFA_nop, DW_CFA_nop,
6075
6076 PLT_FDE_LENGTH, 0, 0, 0, /* FDE length */
6077 PLT_CIE_LENGTH + 8, 0, 0, 0,/* CIE pointer */
6078 0, 0, 0, 0, /* R_X86_64_PC32 .plt goes here */
6079 0, 0, 0, 0, /* .plt size goes here */
6080 0, /* Augmentation size */
6081 DW_CFA_def_cfa_offset, 16, /* DW_CFA_def_cfa_offset: 16 */
6082 DW_CFA_advance_loc + 6, /* DW_CFA_advance_loc: 6 to __PLT__+6 */
6083 DW_CFA_def_cfa_offset, 24, /* DW_CFA_def_cfa_offset: 24 */
6084 DW_CFA_advance_loc + 58, /* DW_CFA_advance_loc: 58 to __PLT__+64 */
6085 DW_CFA_def_cfa_expression, /* DW_CFA_def_cfa_expression */
6086 13, /* Block length */
6087 DW_OP_breg7, 8, /* DW_OP_breg7 (rsp): 8 */
6088 DW_OP_breg16, 0, /* DW_OP_breg16 (rip): 0 */
6089 DW_OP_const1u, 63, DW_OP_and, DW_OP_const1u, 37, DW_OP_ge,
6090 DW_OP_lit3, DW_OP_shl, DW_OP_plus,
6091 DW_CFA_nop, DW_CFA_nop
6092 };
6093
6094static const struct elf_x86_64_backend_data elf_x86_64_nacl_arch_bed =
6095 {
6096 elf_x86_64_nacl_plt0_entry, /* plt0_entry */
6097 elf_x86_64_nacl_plt_entry, /* plt_entry */
6098 NACL_PLT_ENTRY_SIZE, /* plt_entry_size */
6099 2, /* plt0_got1_offset */
6100 9, /* plt0_got2_offset */
6101 13, /* plt0_got2_insn_end */
6102 3, /* plt_got_offset */
6103 33, /* plt_reloc_offset */
6104 38, /* plt_plt_offset */
6105 7, /* plt_got_insn_size */
6106 42, /* plt_plt_insn_end */
6107 32, /* plt_lazy_offset */
6108 elf_x86_64_nacl_eh_frame_plt, /* eh_frame_plt */
6109 sizeof (elf_x86_64_nacl_eh_frame_plt), /* eh_frame_plt_size */
6110 };
6111
6112#undef elf_backend_arch_data
6113#define elf_backend_arch_data &elf_x86_64_nacl_arch_bed
6114
64b384e1
RM
6115#undef elf_backend_object_p
6116#define elf_backend_object_p elf64_x86_64_nacl_elf_object_p
5a68afcf
RM
6117#undef elf_backend_modify_segment_map
6118#define elf_backend_modify_segment_map nacl_modify_segment_map
6119#undef elf_backend_modify_program_headers
6120#define elf_backend_modify_program_headers nacl_modify_program_headers
887badb3
RM
6121#undef elf_backend_final_write_processing
6122#define elf_backend_final_write_processing nacl_final_write_processing
5a68afcf 6123
8059fb19
RM
6124#include "elf64-target.h"
6125
6126/* Native Client x32 support. */
6127
64b384e1
RM
6128static bfd_boolean
6129elf32_x86_64_nacl_elf_object_p (bfd *abfd)
6130{
6131 /* Set the right machine number for a NaCl x86-64 ELF32 file. */
6132 bfd_default_set_arch_mach (abfd, bfd_arch_i386, bfd_mach_x64_32_nacl);
6133 return TRUE;
6134}
6135
8059fb19 6136#undef TARGET_LITTLE_SYM
6d00b590 6137#define TARGET_LITTLE_SYM x86_64_elf32_nacl_vec
8059fb19
RM
6138#undef TARGET_LITTLE_NAME
6139#define TARGET_LITTLE_NAME "elf32-x86-64-nacl"
6140#undef elf32_bed
6141#define elf32_bed elf32_x86_64_nacl_bed
6142
6143#define bfd_elf32_bfd_link_hash_table_create \
6144 elf_x86_64_link_hash_table_create
8059fb19
RM
6145#define bfd_elf32_bfd_reloc_type_lookup \
6146 elf_x86_64_reloc_type_lookup
6147#define bfd_elf32_bfd_reloc_name_lookup \
6148 elf_x86_64_reloc_name_lookup
6149#define bfd_elf32_mkobject \
6150 elf_x86_64_mkobject
b7365e5d
L
6151#define bfd_elf32_get_synthetic_symtab \
6152 elf_x86_64_get_synthetic_symtab
8059fb19
RM
6153
6154#undef elf_backend_object_p
6155#define elf_backend_object_p \
64b384e1 6156 elf32_x86_64_nacl_elf_object_p
8059fb19
RM
6157
6158#undef elf_backend_bfd_from_remote_memory
6159#define elf_backend_bfd_from_remote_memory \
6160 _bfd_elf32_bfd_from_remote_memory
6161
6162#undef elf_backend_size_info
6163#define elf_backend_size_info \
6164 _bfd_elf32_size_info
6165
6166#include "elf32-target.h"
6167
6168/* Restore defaults. */
5a68afcf 6169#undef elf_backend_object_p
8059fb19 6170#define elf_backend_object_p elf64_x86_64_elf_object_p
5a68afcf
RM
6171#undef elf_backend_bfd_from_remote_memory
6172#undef elf_backend_size_info
6173#undef elf_backend_modify_segment_map
6174#undef elf_backend_modify_program_headers
887badb3 6175#undef elf_backend_final_write_processing
8059fb19 6176
8a9036a4
L
6177/* Intel L1OM support. */
6178
6179static bfd_boolean
6180elf64_l1om_elf_object_p (bfd *abfd)
6181{
6182 /* Set the right machine number for an L1OM elf64 file. */
6183 bfd_default_set_arch_mach (abfd, bfd_arch_l1om, bfd_mach_l1om);
6184 return TRUE;
6185}
6186
6187#undef TARGET_LITTLE_SYM
6d00b590 6188#define TARGET_LITTLE_SYM l1om_elf64_vec
8a9036a4
L
6189#undef TARGET_LITTLE_NAME
6190#define TARGET_LITTLE_NAME "elf64-l1om"
6191#undef ELF_ARCH
6192#define ELF_ARCH bfd_arch_l1om
6193
6194#undef ELF_MACHINE_CODE
6195#define ELF_MACHINE_CODE EM_L1OM
6196
6197#undef ELF_OSABI
6198
6199#undef elf64_bed
6200#define elf64_bed elf64_l1om_bed
6201
6202#undef elf_backend_object_p
6203#define elf_backend_object_p elf64_l1om_elf_object_p
6204
8059fb19
RM
6205/* Restore defaults. */
6206#undef ELF_MAXPAGESIZE
6207#undef ELF_MINPAGESIZE
6208#undef ELF_COMMONPAGESIZE
6209#define ELF_MAXPAGESIZE 0x200000
6210#define ELF_MINPAGESIZE 0x1000
6211#define ELF_COMMONPAGESIZE 0x1000
6212#undef elf_backend_plt_alignment
6213#define elf_backend_plt_alignment 4
6214#undef elf_backend_arch_data
6215#define elf_backend_arch_data &elf_x86_64_arch_bed
1a0c107f 6216
8a9036a4
L
6217#include "elf64-target.h"
6218
6219/* FreeBSD L1OM support. */
6220
6221#undef TARGET_LITTLE_SYM
6d00b590 6222#define TARGET_LITTLE_SYM l1om_elf64_fbsd_vec
8a9036a4
L
6223#undef TARGET_LITTLE_NAME
6224#define TARGET_LITTLE_NAME "elf64-l1om-freebsd"
6225
6226#undef ELF_OSABI
6227#define ELF_OSABI ELFOSABI_FREEBSD
6228
6229#undef elf64_bed
6230#define elf64_bed elf64_l1om_fbsd_bed
6231
8a9036a4 6232#include "elf64-target.h"
351f65ca 6233
7a9068fe
L
6234/* Intel K1OM support. */
6235
6236static bfd_boolean
6237elf64_k1om_elf_object_p (bfd *abfd)
6238{
6239 /* Set the right machine number for an K1OM elf64 file. */
6240 bfd_default_set_arch_mach (abfd, bfd_arch_k1om, bfd_mach_k1om);
6241 return TRUE;
6242}
6243
6244#undef TARGET_LITTLE_SYM
6d00b590 6245#define TARGET_LITTLE_SYM k1om_elf64_vec
7a9068fe
L
6246#undef TARGET_LITTLE_NAME
6247#define TARGET_LITTLE_NAME "elf64-k1om"
6248#undef ELF_ARCH
6249#define ELF_ARCH bfd_arch_k1om
6250
6251#undef ELF_MACHINE_CODE
6252#define ELF_MACHINE_CODE EM_K1OM
6253
6254#undef ELF_OSABI
6255
6256#undef elf64_bed
6257#define elf64_bed elf64_k1om_bed
6258
6259#undef elf_backend_object_p
6260#define elf_backend_object_p elf64_k1om_elf_object_p
6261
6262#undef elf_backend_static_tls_alignment
6263
6264#undef elf_backend_want_plt_sym
6265#define elf_backend_want_plt_sym 0
6266
6267#include "elf64-target.h"
6268
6269/* FreeBSD K1OM support. */
6270
6271#undef TARGET_LITTLE_SYM
6d00b590 6272#define TARGET_LITTLE_SYM k1om_elf64_fbsd_vec
7a9068fe
L
6273#undef TARGET_LITTLE_NAME
6274#define TARGET_LITTLE_NAME "elf64-k1om-freebsd"
6275
6276#undef ELF_OSABI
6277#define ELF_OSABI ELFOSABI_FREEBSD
6278
6279#undef elf64_bed
6280#define elf64_bed elf64_k1om_fbsd_bed
6281
6282#include "elf64-target.h"
6283
351f65ca
L
6284/* 32bit x86-64 support. */
6285
351f65ca 6286#undef TARGET_LITTLE_SYM
6d00b590 6287#define TARGET_LITTLE_SYM x86_64_elf32_vec
351f65ca
L
6288#undef TARGET_LITTLE_NAME
6289#define TARGET_LITTLE_NAME "elf32-x86-64"
8059fb19 6290#undef elf32_bed
351f65ca
L
6291
6292#undef ELF_ARCH
6293#define ELF_ARCH bfd_arch_i386
6294
6295#undef ELF_MACHINE_CODE
6296#define ELF_MACHINE_CODE EM_X86_64
6297
351f65ca
L
6298#undef ELF_OSABI
6299
351f65ca
L
6300#undef elf_backend_object_p
6301#define elf_backend_object_p \
6302 elf32_x86_64_elf_object_p
6303
6304#undef elf_backend_bfd_from_remote_memory
6305#define elf_backend_bfd_from_remote_memory \
6306 _bfd_elf32_bfd_from_remote_memory
6307
6308#undef elf_backend_size_info
6309#define elf_backend_size_info \
6310 _bfd_elf32_size_info
6311
6312#include "elf32-target.h"
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