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Replace multiple AVR scripts with a single, customizable linker script.
[thirdparty/binutils-gdb.git] / bfd / elf64-x86-64.c
CommitLineData
351f65ca 1/* X86-64 specific support for ELF
2571583a 2 Copyright (C) 2000-2017 Free Software Foundation, Inc.
8d88c4ca
NC		 3 Contributed by Jan Hubicka <jh@suse.cz>.
4
ae9a127f 5 This file is part of BFD, the Binary File Descriptor library.
8d88c4ca 6
ae9a127f
NC		 7 This program is free software; you can redistribute it and/or modify
8 it under the terms of the GNU General Public License as published by
cd123cb7 9 the Free Software Foundation; either version 3 of the License, or
ae9a127f 10 (at your option) any later version.
8d88c4ca 11
ae9a127f
NC		 12 This program is distributed in the hope that it will be useful,
13 but WITHOUT ANY WARRANTY; without even the implied warranty of
14 MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
15 GNU General Public License for more details.
8d88c4ca 16
ae9a127f
NC		 17 You should have received a copy of the GNU General Public License
18 along with this program; if not, write to the Free Software
cd123cb7
NC		 19 Foundation, Inc., 51 Franklin Street - Fifth Floor, Boston,
20 MA 02110-1301, USA. */
8d88c4ca 21
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 33
56ceb5b5 34#include "opcode/i386.h"
8d88c4ca
NC		 35#include "elf/x86-64.h"
36
8fd79e71
L		 37#ifdef CORE_HEADER
38#include <stdarg.h>
39#include CORE_HEADER
40#endif
41
8d88c4ca
NC		 42/* In case we're on a 32-bit machine, construct a 64-bit "-1" value. */
43#define MINUS_ONE (~ (bfd_vma) 0)
44
351f65ca
L		 45/* Since both 32-bit and 64-bit x86-64 encode relocation type in the
46 identical manner, we use ELF32_R_TYPE instead of ELF64_R_TYPE to get
47 relocation type. We also use ELF_ST_TYPE instead of ELF64_ST_TYPE
48 since they are the same. */
49
50#define ABI_64_P(abfd) \
51 (get_elf_backend_data (abfd)->s->elfclass == ELFCLASS64)
52
8d88c4ca 53/* The relocation "howto" table. Order of fields:
7b81dfbb
AJ		 54 type, rightshift, size, bitsize, pc_relative, bitpos, complain_on_overflow,
55 special_function, name, partial_inplace, src_mask, dst_mask, pcrel_offset. */
70256ad8
AJ		 56static reloc_howto_type x86_64_elf_howto_table[] =
57{
6346d5ca 58 HOWTO(R_X86_64_NONE, 0, 3, 0, FALSE, 0, complain_overflow_dont,
b34976b6
AM		 59 bfd_elf_generic_reloc, "R_X86_64_NONE", FALSE, 0x00000000, 0x00000000,
60 FALSE),
61 HOWTO(R_X86_64_64, 0, 4, 64, FALSE, 0, complain_overflow_bitfield,
62 bfd_elf_generic_reloc, "R_X86_64_64", FALSE, MINUS_ONE, MINUS_ONE,
63 FALSE),
64 HOWTO(R_X86_64_PC32, 0, 2, 32, TRUE, 0, complain_overflow_signed,
65 bfd_elf_generic_reloc, "R_X86_64_PC32", FALSE, 0xffffffff, 0xffffffff,
66 TRUE),
67 HOWTO(R_X86_64_GOT32, 0, 2, 32, FALSE, 0, complain_overflow_signed,
68 bfd_elf_generic_reloc, "R_X86_64_GOT32", FALSE, 0xffffffff, 0xffffffff,
69 FALSE),
70 HOWTO(R_X86_64_PLT32, 0, 2, 32, TRUE, 0, complain_overflow_signed,
71 bfd_elf_generic_reloc, "R_X86_64_PLT32", FALSE, 0xffffffff, 0xffffffff,
72 TRUE),
73 HOWTO(R_X86_64_COPY, 0, 2, 32, FALSE, 0, complain_overflow_bitfield,
74 bfd_elf_generic_reloc, "R_X86_64_COPY", FALSE, 0xffffffff, 0xffffffff,
75 FALSE),
76 HOWTO(R_X86_64_GLOB_DAT, 0, 4, 64, FALSE, 0, complain_overflow_bitfield,
77 bfd_elf_generic_reloc, "R_X86_64_GLOB_DAT", FALSE, MINUS_ONE,
78 MINUS_ONE, FALSE),
79 HOWTO(R_X86_64_JUMP_SLOT, 0, 4, 64, FALSE, 0, complain_overflow_bitfield,
80 bfd_elf_generic_reloc, "R_X86_64_JUMP_SLOT", FALSE, MINUS_ONE,
81 MINUS_ONE, FALSE),
82 HOWTO(R_X86_64_RELATIVE, 0, 4, 64, FALSE, 0, complain_overflow_bitfield,
83 bfd_elf_generic_reloc, "R_X86_64_RELATIVE", FALSE, MINUS_ONE,
84 MINUS_ONE, FALSE),
85 HOWTO(R_X86_64_GOTPCREL, 0, 2, 32, TRUE, 0, complain_overflow_signed,
86 bfd_elf_generic_reloc, "R_X86_64_GOTPCREL", FALSE, 0xffffffff,
87 0xffffffff, TRUE),
88 HOWTO(R_X86_64_32, 0, 2, 32, FALSE, 0, complain_overflow_unsigned,
89 bfd_elf_generic_reloc, "R_X86_64_32", FALSE, 0xffffffff, 0xffffffff,
90 FALSE),
91 HOWTO(R_X86_64_32S, 0, 2, 32, FALSE, 0, complain_overflow_signed,
92 bfd_elf_generic_reloc, "R_X86_64_32S", FALSE, 0xffffffff, 0xffffffff,
93 FALSE),
94 HOWTO(R_X86_64_16, 0, 1, 16, FALSE, 0, complain_overflow_bitfield,
95 bfd_elf_generic_reloc, "R_X86_64_16", FALSE, 0xffff, 0xffff, FALSE),
b0360d8c 96 HOWTO(R_X86_64_PC16,0, 1, 16, TRUE, 0, complain_overflow_bitfield,
b34976b6 97 bfd_elf_generic_reloc, "R_X86_64_PC16", FALSE, 0xffff, 0xffff, TRUE),
ac2aa337 98 HOWTO(R_X86_64_8, 0, 0, 8, FALSE, 0, complain_overflow_bitfield,
b34976b6
AM		 99 bfd_elf_generic_reloc, "R_X86_64_8", FALSE, 0xff, 0xff, FALSE),
100 HOWTO(R_X86_64_PC8, 0, 0, 8, TRUE, 0, complain_overflow_signed,
101 bfd_elf_generic_reloc, "R_X86_64_PC8", FALSE, 0xff, 0xff, TRUE),
102 HOWTO(R_X86_64_DTPMOD64, 0, 4, 64, FALSE, 0, complain_overflow_bitfield,
103 bfd_elf_generic_reloc, "R_X86_64_DTPMOD64", FALSE, MINUS_ONE,
104 MINUS_ONE, FALSE),
105 HOWTO(R_X86_64_DTPOFF64, 0, 4, 64, FALSE, 0, complain_overflow_bitfield,
106 bfd_elf_generic_reloc, "R_X86_64_DTPOFF64", FALSE, MINUS_ONE,
107 MINUS_ONE, FALSE),
108 HOWTO(R_X86_64_TPOFF64, 0, 4, 64, FALSE, 0, complain_overflow_bitfield,
109 bfd_elf_generic_reloc, "R_X86_64_TPOFF64", FALSE, MINUS_ONE,
110 MINUS_ONE, FALSE),
111 HOWTO(R_X86_64_TLSGD, 0, 2, 32, TRUE, 0, complain_overflow_signed,
112 bfd_elf_generic_reloc, "R_X86_64_TLSGD", FALSE, 0xffffffff,
113 0xffffffff, TRUE),
114 HOWTO(R_X86_64_TLSLD, 0, 2, 32, TRUE, 0, complain_overflow_signed,
115 bfd_elf_generic_reloc, "R_X86_64_TLSLD", FALSE, 0xffffffff,
116 0xffffffff, TRUE),
ac2aa337 117 HOWTO(R_X86_64_DTPOFF32, 0, 2, 32, FALSE, 0, complain_overflow_signed,
b34976b6
AM		 118 bfd_elf_generic_reloc, "R_X86_64_DTPOFF32", FALSE, 0xffffffff,
119 0xffffffff, FALSE),
120 HOWTO(R_X86_64_GOTTPOFF, 0, 2, 32, TRUE, 0, complain_overflow_signed,
121 bfd_elf_generic_reloc, "R_X86_64_GOTTPOFF", FALSE, 0xffffffff,
122 0xffffffff, TRUE),
123 HOWTO(R_X86_64_TPOFF32, 0, 2, 32, FALSE, 0, complain_overflow_signed,
124 bfd_elf_generic_reloc, "R_X86_64_TPOFF32", FALSE, 0xffffffff,
125 0xffffffff, FALSE),
d6ab8113
JB		 126 HOWTO(R_X86_64_PC64, 0, 4, 64, TRUE, 0, complain_overflow_bitfield,
127 bfd_elf_generic_reloc, "R_X86_64_PC64", FALSE, MINUS_ONE, MINUS_ONE,
128 TRUE),
129 HOWTO(R_X86_64_GOTOFF64, 0, 4, 64, FALSE, 0, complain_overflow_bitfield,
130 bfd_elf_generic_reloc, "R_X86_64_GOTOFF64",
131 FALSE, MINUS_ONE, MINUS_ONE, FALSE),
132 HOWTO(R_X86_64_GOTPC32, 0, 2, 32, TRUE, 0, complain_overflow_signed,
133 bfd_elf_generic_reloc, "R_X86_64_GOTPC32",
134 FALSE, 0xffffffff, 0xffffffff, TRUE),
7b81dfbb
AJ		 135 HOWTO(R_X86_64_GOT64, 0, 4, 64, FALSE, 0, complain_overflow_signed,
136 bfd_elf_generic_reloc, "R_X86_64_GOT64", FALSE, MINUS_ONE, MINUS_ONE,
137 FALSE),
138 HOWTO(R_X86_64_GOTPCREL64, 0, 4, 64, TRUE, 0, complain_overflow_signed,
139 bfd_elf_generic_reloc, "R_X86_64_GOTPCREL64", FALSE, MINUS_ONE,
140 MINUS_ONE, TRUE),
141 HOWTO(R_X86_64_GOTPC64, 0, 4, 64, TRUE, 0, complain_overflow_signed,
142 bfd_elf_generic_reloc, "R_X86_64_GOTPC64",
143 FALSE, MINUS_ONE, MINUS_ONE, TRUE),
144 HOWTO(R_X86_64_GOTPLT64, 0, 4, 64, FALSE, 0, complain_overflow_signed,
145 bfd_elf_generic_reloc, "R_X86_64_GOTPLT64", FALSE, MINUS_ONE,
146 MINUS_ONE, FALSE),
147 HOWTO(R_X86_64_PLTOFF64, 0, 4, 64, FALSE, 0, complain_overflow_signed,
148 bfd_elf_generic_reloc, "R_X86_64_PLTOFF64", FALSE, MINUS_ONE,
149 MINUS_ONE, FALSE),
1788fc08
L		 150 HOWTO(R_X86_64_SIZE32, 0, 2, 32, FALSE, 0, complain_overflow_unsigned,
151 bfd_elf_generic_reloc, "R_X86_64_SIZE32", FALSE, 0xffffffff, 0xffffffff,
152 FALSE),
153 HOWTO(R_X86_64_SIZE64, 0, 4, 64, FALSE, 0, complain_overflow_unsigned,
154 bfd_elf_generic_reloc, "R_X86_64_SIZE64", FALSE, MINUS_ONE, MINUS_ONE,
155 FALSE),
67a4f2b7
AO		 156 HOWTO(R_X86_64_GOTPC32_TLSDESC, 0, 2, 32, TRUE, 0,
157 complain_overflow_bitfield, bfd_elf_generic_reloc,
158 "R_X86_64_GOTPC32_TLSDESC",
159 FALSE, 0xffffffff, 0xffffffff, TRUE),
160 HOWTO(R_X86_64_TLSDESC_CALL, 0, 0, 0, FALSE, 0,
161 complain_overflow_dont, bfd_elf_generic_reloc,
162 "R_X86_64_TLSDESC_CALL",
163 FALSE, 0, 0, FALSE),
164 HOWTO(R_X86_64_TLSDESC, 0, 4, 64, FALSE, 0,
165 complain_overflow_bitfield, bfd_elf_generic_reloc,
166 "R_X86_64_TLSDESC",
167 FALSE, MINUS_ONE, MINUS_ONE, FALSE),
cbe950e9
L		 168 HOWTO(R_X86_64_IRELATIVE, 0, 4, 64, FALSE, 0, complain_overflow_bitfield,
169 bfd_elf_generic_reloc, "R_X86_64_IRELATIVE", FALSE, MINUS_ONE,
170 MINUS_ONE, FALSE),
64d25c44
L		 171 HOWTO(R_X86_64_RELATIVE64, 0, 4, 64, FALSE, 0, complain_overflow_bitfield,
172 bfd_elf_generic_reloc, "R_X86_64_RELATIVE64", FALSE, MINUS_ONE,
173 MINUS_ONE, FALSE),
c3320543
L		 174 HOWTO(R_X86_64_PC32_BND, 0, 2, 32, TRUE, 0, complain_overflow_signed,
175 bfd_elf_generic_reloc, "R_X86_64_PC32_BND", FALSE, 0xffffffff, 0xffffffff,
176 TRUE),
177 HOWTO(R_X86_64_PLT32_BND, 0, 2, 32, TRUE, 0, complain_overflow_signed,
178 bfd_elf_generic_reloc, "R_X86_64_PLT32_BND", FALSE, 0xffffffff, 0xffffffff,
179 TRUE),
56ceb5b5
L		 180 HOWTO(R_X86_64_GOTPCRELX, 0, 2, 32, TRUE, 0, complain_overflow_signed,
181 bfd_elf_generic_reloc, "R_X86_64_GOTPCRELX", FALSE, 0xffffffff,
182 0xffffffff, TRUE),
183 HOWTO(R_X86_64_REX_GOTPCRELX, 0, 2, 32, TRUE, 0, complain_overflow_signed,
184 bfd_elf_generic_reloc, "R_X86_64_REX_GOTPCRELX", FALSE, 0xffffffff,
185 0xffffffff, TRUE),
fe4770f4 186
a33d77bc
JB		 187 /* We have a gap in the reloc numbers here.
188 R_X86_64_standard counts the number up to this point, and
189 R_X86_64_vt_offset is the value to subtract from a reloc type of
190 R_X86_64_GNU_VT* to form an index into this table. */
56ceb5b5 191#define R_X86_64_standard (R_X86_64_REX_GOTPCRELX + 1)
a33d77bc
JB		 192#define R_X86_64_vt_offset (R_X86_64_GNU_VTINHERIT - R_X86_64_standard)
193
fe4770f4 194/* GNU extension to record C++ vtable hierarchy. */
b34976b6
AM		 195 HOWTO (R_X86_64_GNU_VTINHERIT, 0, 4, 0, FALSE, 0, complain_overflow_dont,
196 NULL, "R_X86_64_GNU_VTINHERIT", FALSE, 0, 0, FALSE),
fe4770f4
AJ		 197
198/* GNU extension to record C++ vtable member usage. */
b34976b6
AM		 199 HOWTO (R_X86_64_GNU_VTENTRY, 0, 4, 0, FALSE, 0, complain_overflow_dont,
200 _bfd_elf_rel_vtable_reloc_fn, "R_X86_64_GNU_VTENTRY", FALSE, 0, 0,
d7921315
L		 201 FALSE),
202
203/* Use complain_overflow_bitfield on R_X86_64_32 for x32. */
204 HOWTO(R_X86_64_32, 0, 2, 32, FALSE, 0, complain_overflow_bitfield,
205 bfd_elf_generic_reloc, "R_X86_64_32", FALSE, 0xffffffff, 0xffffffff,
206 FALSE)
8d88c4ca
NC		 207};
208
d8045f23
NC		 209#define IS_X86_64_PCREL_TYPE(TYPE) \
210 ( ((TYPE) == R_X86_64_PC8) \
211 || ((TYPE) == R_X86_64_PC16) \
212 || ((TYPE) == R_X86_64_PC32) \
c3320543 213 || ((TYPE) == R_X86_64_PC32_BND) \
d8045f23
NC		 214 || ((TYPE) == R_X86_64_PC64))
215
8d88c4ca 216/* Map BFD relocs to the x86_64 elf relocs. */
70256ad8
AJ		 217struct elf_reloc_map
218{
8d88c4ca
NC		 219 bfd_reloc_code_real_type bfd_reloc_val;
220 unsigned char elf_reloc_val;
221};
222
dc810e39 223static const struct elf_reloc_map x86_64_reloc_map[] =
8d88c4ca 224{
70256ad8
AJ		 225 { BFD_RELOC_NONE, R_X86_64_NONE, },
226 { BFD_RELOC_64, R_X86_64_64, },
227 { BFD_RELOC_32_PCREL, R_X86_64_PC32, },
228 { BFD_RELOC_X86_64_GOT32, R_X86_64_GOT32,},
229 { BFD_RELOC_X86_64_PLT32, R_X86_64_PLT32,},
230 { BFD_RELOC_X86_64_COPY, R_X86_64_COPY, },
231 { BFD_RELOC_X86_64_GLOB_DAT, R_X86_64_GLOB_DAT, },
232 { BFD_RELOC_X86_64_JUMP_SLOT, R_X86_64_JUMP_SLOT, },
233 { BFD_RELOC_X86_64_RELATIVE, R_X86_64_RELATIVE, },
234 { BFD_RELOC_X86_64_GOTPCREL, R_X86_64_GOTPCREL, },
235 { BFD_RELOC_32, R_X86_64_32, },
236 { BFD_RELOC_X86_64_32S, R_X86_64_32S, },
237 { BFD_RELOC_16, R_X86_64_16, },
238 { BFD_RELOC_16_PCREL, R_X86_64_PC16, },
239 { BFD_RELOC_8, R_X86_64_8, },
240 { BFD_RELOC_8_PCREL, R_X86_64_PC8, },
bffbf940
JJ		 241 { BFD_RELOC_X86_64_DTPMOD64, R_X86_64_DTPMOD64, },
242 { BFD_RELOC_X86_64_DTPOFF64, R_X86_64_DTPOFF64, },
243 { BFD_RELOC_X86_64_TPOFF64, R_X86_64_TPOFF64, },
244 { BFD_RELOC_X86_64_TLSGD, R_X86_64_TLSGD, },
245 { BFD_RELOC_X86_64_TLSLD, R_X86_64_TLSLD, },
246 { BFD_RELOC_X86_64_DTPOFF32, R_X86_64_DTPOFF32, },
247 { BFD_RELOC_X86_64_GOTTPOFF, R_X86_64_GOTTPOFF, },
248 { BFD_RELOC_X86_64_TPOFF32, R_X86_64_TPOFF32, },
d6ab8113
JB		 249 { BFD_RELOC_64_PCREL, R_X86_64_PC64, },
250 { BFD_RELOC_X86_64_GOTOFF64, R_X86_64_GOTOFF64, },
251 { BFD_RELOC_X86_64_GOTPC32, R_X86_64_GOTPC32, },
7b81dfbb
AJ		 252 { BFD_RELOC_X86_64_GOT64, R_X86_64_GOT64, },
253 { BFD_RELOC_X86_64_GOTPCREL64,R_X86_64_GOTPCREL64, },
254 { BFD_RELOC_X86_64_GOTPC64, R_X86_64_GOTPC64, },
255 { BFD_RELOC_X86_64_GOTPLT64, R_X86_64_GOTPLT64, },
256 { BFD_RELOC_X86_64_PLTOFF64, R_X86_64_PLTOFF64, },
1788fc08
L		 257 { BFD_RELOC_SIZE32, R_X86_64_SIZE32, },
258 { BFD_RELOC_SIZE64, R_X86_64_SIZE64, },
67a4f2b7
AO		 259 { BFD_RELOC_X86_64_GOTPC32_TLSDESC, R_X86_64_GOTPC32_TLSDESC, },
260 { BFD_RELOC_X86_64_TLSDESC_CALL, R_X86_64_TLSDESC_CALL, },
261 { BFD_RELOC_X86_64_TLSDESC, R_X86_64_TLSDESC, },
cbe950e9 262 { BFD_RELOC_X86_64_IRELATIVE, R_X86_64_IRELATIVE, },
56ceb5b5
L		 263 { BFD_RELOC_X86_64_PC32_BND, R_X86_64_PC32_BND, },
264 { BFD_RELOC_X86_64_PLT32_BND, R_X86_64_PLT32_BND, },
265 { BFD_RELOC_X86_64_GOTPCRELX, R_X86_64_GOTPCRELX, },
266 { BFD_RELOC_X86_64_REX_GOTPCRELX, R_X86_64_REX_GOTPCRELX, },
fe4770f4
AJ		 267 { BFD_RELOC_VTABLE_INHERIT, R_X86_64_GNU_VTINHERIT, },
268 { BFD_RELOC_VTABLE_ENTRY, R_X86_64_GNU_VTENTRY, },
8d88c4ca
NC		 269};
270
67a4f2b7 271static reloc_howto_type *
351f65ca 272elf_x86_64_rtype_to_howto (bfd *abfd, unsigned r_type)
67a4f2b7
AO		 273{
274 unsigned i;
275
d7921315
L		 276 if (r_type == (unsigned int) R_X86_64_32)
277 {
278 if (ABI_64_P (abfd))
279 i = r_type;
280 else
281 i = ARRAY_SIZE (x86_64_elf_howto_table) - 1;
282 }
283 else if (r_type < (unsigned int) R_X86_64_GNU_VTINHERIT
284 || r_type >= (unsigned int) R_X86_64_max)
67a4f2b7
AO		 285 {
286 if (r_type >= (unsigned int) R_X86_64_standard)
287 {
695344c0 288 /* xgettext:c-format */
4eca0228
AM		 289 _bfd_error_handler (_("%B: invalid relocation type %d"),
290 abfd, (int) r_type);
67a4f2b7
AO		 291 r_type = R_X86_64_NONE;
292 }
293 i = r_type;
294 }
295 else
296 i = r_type - (unsigned int) R_X86_64_vt_offset;
297 BFD_ASSERT (x86_64_elf_howto_table[i].type == r_type);
298 return &x86_64_elf_howto_table[i];
299}
8d88c4ca
NC		 300
301/* Given a BFD reloc type, return a HOWTO structure. */
302static reloc_howto_type *
351f65ca
L		 303elf_x86_64_reloc_type_lookup (bfd *abfd,
304 bfd_reloc_code_real_type code)
8d88c4ca
NC		 305{
306 unsigned int i;
27482721 307
8d88c4ca
NC		 308 for (i = 0; i < sizeof (x86_64_reloc_map) / sizeof (struct elf_reloc_map);
309 i++)
310 {
311 if (x86_64_reloc_map[i].bfd_reloc_val == code)
351f65ca
L		 312 return elf_x86_64_rtype_to_howto (abfd,
313 x86_64_reloc_map[i].elf_reloc_val);
8d88c4ca 314 }
5860e3f8 315 return NULL;
8d88c4ca
NC		 316}
317
157090f7 318static reloc_howto_type *
d7921315 319elf_x86_64_reloc_name_lookup (bfd *abfd,
351f65ca 320 const char *r_name)
157090f7
AM		 321{
322 unsigned int i;
323
d7921315
L		 324 if (!ABI_64_P (abfd) && strcasecmp (r_name, "R_X86_64_32") == 0)
325 {
326 /* Get x32 R_X86_64_32. */
327 reloc_howto_type *reloc
328 = &x86_64_elf_howto_table[ARRAY_SIZE (x86_64_elf_howto_table) - 1];
329 BFD_ASSERT (reloc->type == (unsigned int) R_X86_64_32);
330 return reloc;
331 }
332
333 for (i = 0; i < ARRAY_SIZE (x86_64_elf_howto_table); i++)
157090f7
AM		 334 if (x86_64_elf_howto_table[i].name != NULL
335 && strcasecmp (x86_64_elf_howto_table[i].name, r_name) == 0)
336 return &x86_64_elf_howto_table[i];
337
338 return NULL;
339}
340
8d88c4ca 341/* Given an x86_64 ELF reloc type, fill in an arelent structure. */
8da6118f 342
8d88c4ca 343static void
351f65ca
L		 344elf_x86_64_info_to_howto (bfd *abfd ATTRIBUTE_UNUSED, arelent *cache_ptr,
345 Elf_Internal_Rela *dst)
8d88c4ca 346{
67a4f2b7 347 unsigned r_type;
8d88c4ca 348
351f65ca
L		 349 r_type = ELF32_R_TYPE (dst->r_info);
350 cache_ptr->howto = elf_x86_64_rtype_to_howto (abfd, r_type);
8d88c4ca
NC		 351 BFD_ASSERT (r_type == cache_ptr->howto->type);
352}
70256ad8 353\f
3bab7989 354/* Support for core dump NOTE sections. */
b34976b6 355static bfd_boolean
351f65ca 356elf_x86_64_grok_prstatus (bfd *abfd, Elf_Internal_Note *note)
3bab7989
ML		 357{
358 int offset;
eea6121a 359 size_t size;
3bab7989
ML		 360
361 switch (note->descsz)
362 {
363 default:
b34976b6 364 return FALSE;
3bab7989 365
bcd823f1
L		 366 case 296: /* sizeof(istruct elf_prstatus) on Linux/x32 */
367 /* pr_cursig */
228e534f 368 elf_tdata (abfd)->core->signal = bfd_get_16 (abfd, note->descdata + 12);
bcd823f1
L		 369
370 /* pr_pid */
228e534f 371 elf_tdata (abfd)->core->lwpid = bfd_get_32 (abfd, note->descdata + 24);
bcd823f1
L		 372
373 /* pr_reg */
374 offset = 72;
375 size = 216;
376
377 break;
378
3bab7989
ML		 379 case 336: /* sizeof(istruct elf_prstatus) on Linux/x86_64 */
380 /* pr_cursig */
228e534f 381 elf_tdata (abfd)->core->signal
3bab7989
ML		 382 = bfd_get_16 (abfd, note->descdata + 12);
383
384 /* pr_pid */
228e534f 385 elf_tdata (abfd)->core->lwpid
3bab7989
ML		 386 = bfd_get_32 (abfd, note->descdata + 32);
387
388 /* pr_reg */
389 offset = 112;
eea6121a 390 size = 216;
3bab7989
ML		 391
392 break;
393 }
394
395 /* Make a ".reg/999" section. */
396 return _bfd_elfcore_make_pseudosection (abfd, ".reg",
eea6121a 397 size, note->descpos + offset);
3bab7989
ML		 398}
399
b34976b6 400static bfd_boolean
351f65ca 401elf_x86_64_grok_psinfo (bfd *abfd, Elf_Internal_Note *note)
3bab7989
ML		 402{
403 switch (note->descsz)
404 {
405 default:
b34976b6 406 return FALSE;
3bab7989 407
bcd823f1 408 case 124: /* sizeof(struct elf_prpsinfo) on Linux/x32 */
228e534f 409 elf_tdata (abfd)->core->pid
bcd823f1 410 = bfd_get_32 (abfd, note->descdata + 12);
228e534f 411 elf_tdata (abfd)->core->program
bcd823f1 412 = _bfd_elfcore_strndup (abfd, note->descdata + 28, 16);
228e534f 413 elf_tdata (abfd)->core->command
bcd823f1
L		 414 = _bfd_elfcore_strndup (abfd, note->descdata + 44, 80);
415 break;
416
3bab7989 417 case 136: /* sizeof(struct elf_prpsinfo) on Linux/x86_64 */
228e534f 418 elf_tdata (abfd)->core->pid
261b8d08 419 = bfd_get_32 (abfd, note->descdata + 24);
228e534f 420 elf_tdata (abfd)->core->program
3bab7989 421 = _bfd_elfcore_strndup (abfd, note->descdata + 40, 16);
228e534f 422 elf_tdata (abfd)->core->command
3bab7989
ML		 423 = _bfd_elfcore_strndup (abfd, note->descdata + 56, 80);
424 }
425
426 /* Note that for some reason, a spurious space is tacked
427 onto the end of the args in some (at least one anyway)
428 implementations, so strip it off if it exists. */
429
430 {
228e534f 431 char *command = elf_tdata (abfd)->core->command;
3bab7989
ML		 432 int n = strlen (command);
433
434 if (0 < n && command[n - 1] == ' ')
435 command[n - 1] = '\0';
436 }
437
b34976b6 438 return TRUE;
3bab7989 439}
8fd79e71
L		 440
441#ifdef CORE_HEADER
442static char *
443elf_x86_64_write_core_note (bfd *abfd, char *buf, int *bufsiz,
444 int note_type, ...)
445{
446 const struct elf_backend_data *bed = get_elf_backend_data (abfd);
8fd79e71
L		 447 va_list ap;
448 const char *fname, *psargs;
449 long pid;
450 int cursig;
451 const void *gregs;
452
453 switch (note_type)
454 {
455 default:
456 return NULL;
457
458 case NT_PRPSINFO:
459 va_start (ap, note_type);
460 fname = va_arg (ap, const char *);
461 psargs = va_arg (ap, const char *);
462 va_end (ap);
463
464 if (bed->s->elfclass == ELFCLASS32)
465 {
466 prpsinfo32_t data;
467 memset (&data, 0, sizeof (data));
468 strncpy (data.pr_fname, fname, sizeof (data.pr_fname));
469 strncpy (data.pr_psargs, psargs, sizeof (data.pr_psargs));
e85c6a70
JK		 470 return elfcore_write_note (abfd, buf, bufsiz, "CORE", note_type,
471 &data, sizeof (data));
8fd79e71
L		 472 }
473 else
474 {
b1bd052d 475 prpsinfo64_t data;
8fd79e71
L		 476 memset (&data, 0, sizeof (data));
477 strncpy (data.pr_fname, fname, sizeof (data.pr_fname));
478 strncpy (data.pr_psargs, psargs, sizeof (data.pr_psargs));
e85c6a70
JK		 479 return elfcore_write_note (abfd, buf, bufsiz, "CORE", note_type,
480 &data, sizeof (data));
8fd79e71 481 }
e85c6a70 482 /* NOTREACHED */
8fd79e71
L		 483
484 case NT_PRSTATUS:
485 va_start (ap, note_type);
486 pid = va_arg (ap, long);
487 cursig = va_arg (ap, int);
488 gregs = va_arg (ap, const void *);
489 va_end (ap);
490
491 if (bed->s->elfclass == ELFCLASS32)
492 {
493 if (bed->elf_machine_code == EM_X86_64)
494 {
495 prstatusx32_t prstat;
496 memset (&prstat, 0, sizeof (prstat));
497 prstat.pr_pid = pid;
498 prstat.pr_cursig = cursig;
499 memcpy (&prstat.pr_reg, gregs, sizeof (prstat.pr_reg));
e85c6a70
JK		 500 return elfcore_write_note (abfd, buf, bufsiz, "CORE", note_type,
501 &prstat, sizeof (prstat));
8fd79e71
L		 502 }
503 else
504 {
505 prstatus32_t prstat;
506 memset (&prstat, 0, sizeof (prstat));
507 prstat.pr_pid = pid;
508 prstat.pr_cursig = cursig;
509 memcpy (&prstat.pr_reg, gregs, sizeof (prstat.pr_reg));
e85c6a70
JK		 510 return elfcore_write_note (abfd, buf, bufsiz, "CORE", note_type,
511 &prstat, sizeof (prstat));
8fd79e71
L		 512 }
513 }
514 else
515 {
b1bd052d 516 prstatus64_t prstat;
8fd79e71
L		 517 memset (&prstat, 0, sizeof (prstat));
518 prstat.pr_pid = pid;
519 prstat.pr_cursig = cursig;
520 memcpy (&prstat.pr_reg, gregs, sizeof (prstat.pr_reg));
e85c6a70
JK		 521 return elfcore_write_note (abfd, buf, bufsiz, "CORE", note_type,
522 &prstat, sizeof (prstat));
8fd79e71 523 }
8fd79e71 524 }
e85c6a70 525 /* NOTREACHED */
8fd79e71
L		 526}
527#endif
3bab7989 528\f
407443a3 529/* Functions for the x86-64 ELF linker. */
70256ad8 530
407443a3 531/* The name of the dynamic interpreter. This is put in the .interp
70256ad8
AJ		 532 section. */
533
351f65ca 534#define ELF64_DYNAMIC_INTERPRETER "/lib/ld64.so.1"
eec9dd95 535#define ELF32_DYNAMIC_INTERPRETER "/lib/ldx32.so.1"
70256ad8 536
d40d037c
AJ		 537/* If ELIMINATE_COPY_RELOCS is non-zero, the linker will try to avoid
538 copying dynamic variables from a shared lib into an app's dynbss
539 section, and instead use a dynamic relocation to point into the
540 shared lib. */
541#define ELIMINATE_COPY_RELOCS 1
542
70256ad8
AJ		 543/* The size in bytes of an entry in the global offset table. */
544
545#define GOT_ENTRY_SIZE 8
8d88c4ca 546
38b12349 547/* The size in bytes of an entry in the lazy procedure linkage table. */
8d88c4ca 548
38b12349 549#define LAZY_PLT_ENTRY_SIZE 16
70256ad8 550
38b12349
L		 551/* The size in bytes of an entry in the non-lazy procedure linkage
552 table. */
70256ad8 553
38b12349
L		 554#define NON_LAZY_PLT_ENTRY_SIZE 8
555
556/* The first entry in a lazy procedure linkage table looks like this.
557 See the SVR4 ABI i386 supplement and the x86-64 ABI to see how this
558 works. */
559
560static const bfd_byte elf_x86_64_lazy_plt0_entry[LAZY_PLT_ENTRY_SIZE] =
70256ad8 561{
653165cc
AJ		 562 0xff, 0x35, 8, 0, 0, 0, /* pushq GOT+8(%rip) */
563 0xff, 0x25, 16, 0, 0, 0, /* jmpq *GOT+16(%rip) */
10efb593 564 0x0f, 0x1f, 0x40, 0x00 /* nopl 0(%rax) */
70256ad8
AJ		 565};
566
38b12349 567/* Subsequent entries in a lazy procedure linkage table look like this. */
70256ad8 568
38b12349 569static const bfd_byte elf_x86_64_lazy_plt_entry[LAZY_PLT_ENTRY_SIZE] =
70256ad8 570{
653165cc 571 0xff, 0x25, /* jmpq *name@GOTPC(%rip) */
407443a3 572 0, 0, 0, 0, /* replaced with offset to this symbol in .got. */
653165cc 573 0x68, /* pushq immediate */
70256ad8
AJ		 574 0, 0, 0, 0, /* replaced with index into relocation table. */
575 0xe9, /* jmp relative */
576 0, 0, 0, 0 /* replaced with offset to start of .plt0. */
577};
578
38b12349 579/* The first entry in a lazy procedure linkage table with BND prefix
0ff2b86e
L		 580 like this. */
581
38b12349 582static const bfd_byte elf_x86_64_lazy_bnd_plt0_entry[LAZY_PLT_ENTRY_SIZE] =
0ff2b86e
L		 583{
584 0xff, 0x35, 8, 0, 0, 0, /* pushq GOT+8(%rip) */
585 0xf2, 0xff, 0x25, 16, 0, 0, 0, /* bnd jmpq *GOT+16(%rip) */
586 0x0f, 0x1f, 0 /* nopl (%rax) */
587};
588
38b12349
L		 589/* Subsequent entries for branches with BND prefx in a lazy procedure
590 linkage table look like this. */
0ff2b86e 591
38b12349 592static const bfd_byte elf_x86_64_lazy_bnd_plt_entry[LAZY_PLT_ENTRY_SIZE] =
0ff2b86e
L		 593{
594 0x68, 0, 0, 0, 0, /* pushq immediate */
595 0xf2, 0xe9, 0, 0, 0, 0, /* bnd jmpq relative */
596 0x0f, 0x1f, 0x44, 0, 0 /* nopl 0(%rax,%rax,1) */
597};
598
38b12349 599/* Entries in the non-lazey procedure linkage table look like this. */
0ff2b86e 600
38b12349 601static const bfd_byte elf_x86_64_non_lazy_plt_entry[NON_LAZY_PLT_ENTRY_SIZE] =
0ff2b86e 602{
38b12349
L		 603 0xff, 0x25, /* jmpq *name@GOTPC(%rip) */
604 0, 0, 0, 0, /* replaced with offset to this symbol in .got. */
605 0x66, 0x90 /* xchg %ax,%ax */
0ff2b86e
L		 606};
607
38b12349
L		 608/* Entries for branches with BND prefix in the non-lazey procedure
609 linkage table look like this. */
0ff2b86e 610
38b12349 611static const bfd_byte elf_x86_64_non_lazy_bnd_plt_entry[NON_LAZY_PLT_ENTRY_SIZE] =
0ff2b86e 612{
38b12349
L		 613 0xf2, 0xff, 0x25, /* bnd jmpq *name@GOTPC(%rip) */
614 0, 0, 0, 0, /* replaced with offset to this symbol in .got. */
615 0x90 /* nop */
0ff2b86e
L		 616};
617
38b12349 618/* .eh_frame covering the lazy .plt section. */
e41b3a13 619
38b12349 620static const bfd_byte elf_x86_64_eh_frame_lazy_plt[] =
e41b3a13
JJ		 621{
622#define PLT_CIE_LENGTH 20
623#define PLT_FDE_LENGTH 36
624#define PLT_FDE_START_OFFSET 4 + PLT_CIE_LENGTH + 8
625#define PLT_FDE_LEN_OFFSET 4 + PLT_CIE_LENGTH + 12
626 PLT_CIE_LENGTH, 0, 0, 0, /* CIE length */
627 0, 0, 0, 0, /* CIE ID */
628 1, /* CIE version */
629 'z', 'R', 0, /* Augmentation string */
630 1, /* Code alignment factor */
631 0x78, /* Data alignment factor */
632 16, /* Return address column */
633 1, /* Augmentation size */
634 DW_EH_PE_pcrel | DW_EH_PE_sdata4, /* FDE encoding */
635 DW_CFA_def_cfa, 7, 8, /* DW_CFA_def_cfa: r7 (rsp) ofs 8 */
636 DW_CFA_offset + 16, 1, /* DW_CFA_offset: r16 (rip) at cfa-8 */
637 DW_CFA_nop, DW_CFA_nop,
638
639 PLT_FDE_LENGTH, 0, 0, 0, /* FDE length */
640 PLT_CIE_LENGTH + 8, 0, 0, 0, /* CIE pointer */
641 0, 0, 0, 0, /* R_X86_64_PC32 .plt goes here */
642 0, 0, 0, 0, /* .plt size goes here */
643 0, /* Augmentation size */
644 DW_CFA_def_cfa_offset, 16, /* DW_CFA_def_cfa_offset: 16 */
645 DW_CFA_advance_loc + 6, /* DW_CFA_advance_loc: 6 to __PLT__+6 */
646 DW_CFA_def_cfa_offset, 24, /* DW_CFA_def_cfa_offset: 24 */
647 DW_CFA_advance_loc + 10, /* DW_CFA_advance_loc: 10 to __PLT__+16 */
648 DW_CFA_def_cfa_expression, /* DW_CFA_def_cfa_expression */
649 11, /* Block length */
650 DW_OP_breg7, 8, /* DW_OP_breg7 (rsp): 8 */
651 DW_OP_breg16, 0, /* DW_OP_breg16 (rip): 0 */
652 DW_OP_lit15, DW_OP_and, DW_OP_lit11, DW_OP_ge,
653 DW_OP_lit3, DW_OP_shl, DW_OP_plus,
654 DW_CFA_nop, DW_CFA_nop, DW_CFA_nop, DW_CFA_nop
655};
656
38b12349 657/* .eh_frame covering the lazy BND .plt section. */
9e659176 658
38b12349 659static const bfd_byte elf_x86_64_eh_frame_lazy_bnd_plt[] =
9e659176
L		 660{
661 PLT_CIE_LENGTH, 0, 0, 0, /* CIE length */
662 0, 0, 0, 0, /* CIE ID */
663 1, /* CIE version */
664 'z', 'R', 0, /* Augmentation string */
665 1, /* Code alignment factor */
666 0x78, /* Data alignment factor */
667 16, /* Return address column */
668 1, /* Augmentation size */
669 DW_EH_PE_pcrel | DW_EH_PE_sdata4, /* FDE encoding */
670 DW_CFA_def_cfa, 7, 8, /* DW_CFA_def_cfa: r7 (rsp) ofs 8 */
671 DW_CFA_offset + 16, 1, /* DW_CFA_offset: r16 (rip) at cfa-8 */
672 DW_CFA_nop, DW_CFA_nop,
673
674 PLT_FDE_LENGTH, 0, 0, 0, /* FDE length */
675 PLT_CIE_LENGTH + 8, 0, 0, 0, /* CIE pointer */
676 0, 0, 0, 0, /* R_X86_64_PC32 .plt goes here */
677 0, 0, 0, 0, /* .plt size goes here */
678 0, /* Augmentation size */
679 DW_CFA_def_cfa_offset, 16, /* DW_CFA_def_cfa_offset: 16 */
680 DW_CFA_advance_loc + 6, /* DW_CFA_advance_loc: 6 to __PLT__+6 */
681 DW_CFA_def_cfa_offset, 24, /* DW_CFA_def_cfa_offset: 24 */
682 DW_CFA_advance_loc + 10, /* DW_CFA_advance_loc: 10 to __PLT__+16 */
683 DW_CFA_def_cfa_expression, /* DW_CFA_def_cfa_expression */
684 11, /* Block length */
685 DW_OP_breg7, 8, /* DW_OP_breg7 (rsp): 8 */
686 DW_OP_breg16, 0, /* DW_OP_breg16 (rip): 0 */
687 DW_OP_lit15, DW_OP_and, DW_OP_lit5, DW_OP_ge,
688 DW_OP_lit3, DW_OP_shl, DW_OP_plus,
689 DW_CFA_nop, DW_CFA_nop, DW_CFA_nop, DW_CFA_nop
690};
691
38b12349 692/* .eh_frame covering the non-lazy .plt section. */
fff53dae 693
38b12349 694static const bfd_byte elf_x86_64_eh_frame_non_lazy_plt[] =
fff53dae
L		 695{
696#define PLT_GOT_FDE_LENGTH 20
697 PLT_CIE_LENGTH, 0, 0, 0, /* CIE length */
698 0, 0, 0, 0, /* CIE ID */
699 1, /* CIE version */
700 'z', 'R', 0, /* Augmentation string */
701 1, /* Code alignment factor */
702 0x78, /* Data alignment factor */
703 16, /* Return address column */
704 1, /* Augmentation size */
705 DW_EH_PE_pcrel | DW_EH_PE_sdata4, /* FDE encoding */
706 DW_CFA_def_cfa, 7, 8, /* DW_CFA_def_cfa: r7 (rsp) ofs 8 */
707 DW_CFA_offset + 16, 1, /* DW_CFA_offset: r16 (rip) at cfa-8 */
708 DW_CFA_nop, DW_CFA_nop,
709
710 PLT_GOT_FDE_LENGTH, 0, 0, 0, /* FDE length */
711 PLT_CIE_LENGTH + 8, 0, 0, 0, /* CIE pointer */
38b12349
L		 712 0, 0, 0, 0, /* the start of non-lazy .plt goes here */
713 0, 0, 0, 0, /* non-lazy .plt size goes here */
fff53dae
L		 714 0, /* Augmentation size */
715 DW_CFA_nop, DW_CFA_nop, DW_CFA_nop, DW_CFA_nop,
716 DW_CFA_nop, DW_CFA_nop, DW_CFA_nop
717};
718
38b12349 719struct elf_x86_64_lazy_plt_layout
eed180f8
RM		 720{
721 /* Templates for the initial PLT entry and for subsequent entries. */
722 const bfd_byte *plt0_entry;
723 const bfd_byte *plt_entry;
724 unsigned int plt_entry_size; /* Size of each PLT entry. */
725
726 /* Offsets into plt0_entry that are to be replaced with GOT[1] and GOT[2]. */
727 unsigned int plt0_got1_offset;
728 unsigned int plt0_got2_offset;
729
730 /* Offset of the end of the PC-relative instruction containing
731 plt0_got2_offset. */
732 unsigned int plt0_got2_insn_end;
733
734 /* Offsets into plt_entry that are to be replaced with... */
735 unsigned int plt_got_offset; /* ... address of this symbol in .got. */
736 unsigned int plt_reloc_offset; /* ... offset into relocation table. */
737 unsigned int plt_plt_offset; /* ... offset to start of .plt. */
738
739 /* Length of the PC-relative instruction containing plt_got_offset. */
740 unsigned int plt_got_insn_size;
741
742 /* Offset of the end of the PC-relative jump to plt0_entry. */
743 unsigned int plt_plt_insn_end;
744
745 /* Offset into plt_entry where the initial value of the GOT entry points. */
746 unsigned int plt_lazy_offset;
747
38b12349
L		 748 /* .eh_frame covering the lazy .plt section. */
749 const bfd_byte *eh_frame_plt;
750 unsigned int eh_frame_plt_size;
751};
752
753struct elf_x86_64_non_lazy_plt_layout
754{
755 /* Template for the lazy PLT entries. */
756 const bfd_byte *plt_entry;
757 unsigned int plt_entry_size; /* Size of each PLT entry. */
758
759 /* Offsets into plt_entry that are to be replaced with... */
760 unsigned int plt_got_offset; /* ... address of this symbol in .got. */
761
762 /* Length of the PC-relative instruction containing plt_got_offset. */
763 unsigned int plt_got_insn_size;
764
765 /* .eh_frame covering the non-lazy .plt section. */
766 const bfd_byte *eh_frame_plt;
767 unsigned int eh_frame_plt_size;
768};
769
770struct elf_x86_64_plt_layout
771{
772 /* Template for the PLT entries. */
773 const bfd_byte *plt_entry;
774 unsigned int plt_entry_size; /* Size of each PLT entry. */
775
776 /* 1 has PLT0. */
777 unsigned int has_plt0;
778
779 /* Offsets into plt_entry that are to be replaced with... */
780 unsigned int plt_got_offset; /* ... address of this symbol in .got. */
781
782 /* Length of the PC-relative instruction containing plt_got_offset. */
783 unsigned int plt_got_insn_size;
784
eed180f8
RM		 785 /* .eh_frame covering the .plt section. */
786 const bfd_byte *eh_frame_plt;
787 unsigned int eh_frame_plt_size;
38b12349 788};
fff53dae 789
38b12349
L		 790/* Architecture-specific backend data for x86-64. */
791
792struct elf_x86_64_backend_data
793{
794 /* Target system. */
795 enum
796 {
797 is_normal,
798 is_nacl
799 } os;
eed180f8
RM		 800};
801
f8222080
L		 802#define get_elf_x86_64_arch_data(bed) \
803 ((const struct elf_x86_64_backend_data *) (bed)->arch_data)
804
eed180f8 805#define get_elf_x86_64_backend_data(abfd) \
f8222080 806 get_elf_x86_64_arch_data (get_elf_backend_data (abfd))
eed180f8 807
eed180f8 808/* These are the standard parameters. */
38b12349 809static const struct elf_x86_64_lazy_plt_layout elf_x86_64_lazy_plt =
eed180f8 810 {
38b12349
L		 811 elf_x86_64_lazy_plt0_entry, /* plt0_entry */
812 elf_x86_64_lazy_plt_entry, /* plt_entry */
813 LAZY_PLT_ENTRY_SIZE, /* plt_entry_size */
eed180f8
RM		 814 2, /* plt0_got1_offset */
815 8, /* plt0_got2_offset */
816 12, /* plt0_got2_insn_end */
817 2, /* plt_got_offset */
818 7, /* plt_reloc_offset */
819 12, /* plt_plt_offset */
820 6, /* plt_got_insn_size */
38b12349 821 LAZY_PLT_ENTRY_SIZE, /* plt_plt_insn_end */
eed180f8 822 6, /* plt_lazy_offset */
38b12349
L		 823 elf_x86_64_eh_frame_lazy_plt, /* eh_frame_plt */
824 sizeof (elf_x86_64_eh_frame_lazy_plt) /* eh_frame_plt_size */
825 };
826
827static const struct elf_x86_64_non_lazy_plt_layout elf_x86_64_non_lazy_plt =
828 {
829 elf_x86_64_non_lazy_plt_entry, /* plt_entry */
830 NON_LAZY_PLT_ENTRY_SIZE, /* plt_entry_size */
831 2, /* plt_got_offset */
832 6, /* plt_got_insn_size */
833 elf_x86_64_eh_frame_non_lazy_plt, /* eh_frame_plt */
834 sizeof (elf_x86_64_eh_frame_non_lazy_plt) /* eh_frame_plt_size */
eed180f8
RM		 835 };
836
38b12349 837static const struct elf_x86_64_lazy_plt_layout elf_x86_64_lazy_bnd_plt =
0ff2b86e 838 {
38b12349
L		 839 elf_x86_64_lazy_bnd_plt0_entry, /* plt0_entry */
840 elf_x86_64_lazy_bnd_plt_entry, /* plt_entry */
841 LAZY_PLT_ENTRY_SIZE, /* plt_entry_size */
0ff2b86e
L		 842 2, /* plt0_got1_offset */
843 1+8, /* plt0_got2_offset */
844 1+12, /* plt0_got2_insn_end */
845 1+2, /* plt_got_offset */
846 1, /* plt_reloc_offset */
847 7, /* plt_plt_offset */
848 1+6, /* plt_got_insn_size */
849 11, /* plt_plt_insn_end */
850 0, /* plt_lazy_offset */
38b12349
L		 851 elf_x86_64_eh_frame_lazy_bnd_plt, /* eh_frame_plt */
852 sizeof (elf_x86_64_eh_frame_lazy_bnd_plt) /* eh_frame_plt_size */
853 };
854
855static const struct elf_x86_64_non_lazy_plt_layout elf_x86_64_non_lazy_bnd_plt =
856 {
857 elf_x86_64_non_lazy_bnd_plt_entry, /* plt_entry */
858 NON_LAZY_PLT_ENTRY_SIZE, /* plt_entry_size */
859 1+2, /* plt_got_offset */
860 1+6, /* plt_got_insn_size */
861 elf_x86_64_eh_frame_non_lazy_plt, /* eh_frame_plt */
862 sizeof (elf_x86_64_eh_frame_non_lazy_plt) /* eh_frame_plt_size */
863 };
864
865static const struct elf_x86_64_backend_data elf_x86_64_arch_bed =
866 {
867 is_normal /* os */
0ff2b86e
L		 868 };
869
eed180f8
RM		 870#define elf_backend_arch_data &elf_x86_64_arch_bed
871
aec6b87e
L		 872/* Is a undefined weak symbol which is resolved to 0. Reference to an
873 undefined weak symbol is resolved to 0 when building executable if
874 it isn't dynamic and
875 1. Has non-GOT/non-PLT relocations in text section. Or
876 2. Has no GOT/PLT relocation.
877 */
e62b9723 878#define UNDEFINED_WEAK_RESOLVED_TO_ZERO(INFO, GOT_RELOC, EH) \
aec6b87e
L		 879 ((EH)->elf.root.type == bfd_link_hash_undefweak \
880 && bfd_link_executable (INFO) \
881 && (elf_x86_64_hash_table (INFO)->interp == NULL \
e62b9723 882 || !(GOT_RELOC) \
aec6b87e
L		 883 || (EH)->has_non_got_reloc \
884 || !(INFO)->dynamic_undefined_weak))
885
70256ad8
AJ		 886/* x86-64 ELF linker hash entry. */
887
351f65ca 888struct elf_x86_64_link_hash_entry
70256ad8 889{
c434dee6 890 struct elf_link_hash_entry elf;
70256ad8 891
c434dee6 892 /* Track dynamic relocs copied for this symbol. */
e03a8ed8 893 struct elf_dyn_relocs *dyn_relocs;
bffbf940
JJ		 894
895#define GOT_UNKNOWN 0
896#define GOT_NORMAL 1
897#define GOT_TLS_GD 2
898#define GOT_TLS_IE 3
67a4f2b7
AO		 899#define GOT_TLS_GDESC 4
900#define GOT_TLS_GD_BOTH_P(type) \
901 ((type) == (GOT_TLS_GD | GOT_TLS_GDESC))
902#define GOT_TLS_GD_P(type) \
903 ((type) == GOT_TLS_GD || GOT_TLS_GD_BOTH_P (type))
904#define GOT_TLS_GDESC_P(type) \
905 ((type) == GOT_TLS_GDESC || GOT_TLS_GD_BOTH_P (type))
906#define GOT_TLS_GD_ANY_P(type) \
907 (GOT_TLS_GD_P (type) || GOT_TLS_GDESC_P (type))
bffbf940 908 unsigned char tls_type;
67a4f2b7 909
bc696fd5
L		 910 /* TRUE if a weak symbol with a real definition needs a copy reloc.
911 When there is a weak symbol with a real definition, the processor
912 independent code will have arranged for us to see the real
913 definition first. We need to copy the needs_copy bit from the
914 real definition and check it when allowing copy reloc in PIE. */
915 unsigned int needs_copy : 1;
916
aec6b87e
L		 917 /* TRUE if symbol has GOT or PLT relocations. */
918 unsigned int has_got_reloc : 1;
919
920 /* TRUE if symbol has non-GOT/non-PLT relocations in text sections. */
921 unsigned int has_non_got_reloc : 1;
922
9e9821dd
L		 923 /* Don't call finish_dynamic_symbol on this symbol. */
924 unsigned int no_finish_dynamic_symbol : 1;
925
e2cbcd91
L		 926 /* 0: symbol isn't __tls_get_addr.
927 1: symbol is __tls_get_addr.
928 2: symbol is unknown. */
929 unsigned int tls_get_addr : 2;
930
04ebc307
L		 931 /* Reference count of C/C++ function pointer relocations in read-write
932 section which can be resolved at run-time. */
933 bfd_signed_vma func_pointer_refcount;
934
dd7e64d4
L		 935 /* Information about the GOT PLT entry. Filled when there are both
936 GOT and PLT relocations against the same function. */
937 union gotplt_union plt_got;
938
f2c29a16
L		 939 /* Information about the second PLT entry. */
940 union gotplt_union plt_second;
0ff2b86e 941
67a4f2b7
AO		 942 /* Offset of the GOTPLT entry reserved for the TLS descriptor,
943 starting at the end of the jump table. */
944 bfd_vma tlsdesc_got;
bffbf940
JJ		 945};
946
351f65ca
L		 947#define elf_x86_64_hash_entry(ent) \
948 ((struct elf_x86_64_link_hash_entry *)(ent))
bffbf940 949
351f65ca 950struct elf_x86_64_obj_tdata
bffbf940
JJ		 951{
952 struct elf_obj_tdata root;
953
954 /* tls_type for each local got entry. */
955 char *local_got_tls_type;
67a4f2b7
AO		 956
957 /* GOTPLT entries for TLS descriptors. */
958 bfd_vma *local_tlsdesc_gotent;
70256ad8
AJ		 959};
960
351f65ca
L		 961#define elf_x86_64_tdata(abfd) \
962 ((struct elf_x86_64_obj_tdata *) (abfd)->tdata.any)
bffbf940 963
351f65ca
L		 964#define elf_x86_64_local_got_tls_type(abfd) \
965 (elf_x86_64_tdata (abfd)->local_got_tls_type)
bffbf940 966
351f65ca
L		 967#define elf_x86_64_local_tlsdesc_gotent(abfd) \
968 (elf_x86_64_tdata (abfd)->local_tlsdesc_gotent)
bffbf940 969
0ffa91dd
NC		 970#define is_x86_64_elf(bfd) \
971 (bfd_get_flavour (bfd) == bfd_target_elf_flavour \
972 && elf_tdata (bfd) != NULL \
4dfe6ac6 973 && elf_object_id (bfd) == X86_64_ELF_DATA)
0ffa91dd
NC		 974
975static bfd_boolean
351f65ca 976elf_x86_64_mkobject (bfd *abfd)
0ffa91dd 977{
351f65ca 978 return bfd_elf_allocate_object (abfd, sizeof (struct elf_x86_64_obj_tdata),
4dfe6ac6 979 X86_64_ELF_DATA);
0ffa91dd
NC		 980}
981
c434dee6 982/* x86-64 ELF linker hash table. */
8d88c4ca 983
351f65ca 984struct elf_x86_64_link_hash_table
407443a3 985{
c434dee6 986 struct elf_link_hash_table elf;
70256ad8 987
c434dee6 988 /* Short-cuts to get to dynamic linker sections. */
aec6b87e 989 asection *interp;
e41b3a13 990 asection *plt_eh_frame;
f2c29a16
L		 991 asection *plt_second;
992 asection *plt_second_eh_frame;
dd7e64d4 993 asection *plt_got;
fff53dae 994 asection *plt_got_eh_frame;
70256ad8 995
38b12349
L		 996 /* Parameters describing PLT generation, lazy or non-lazy. */
997 struct elf_x86_64_plt_layout plt;
998
999 /* Parameters describing lazy PLT generation. */
1000 const struct elf_x86_64_lazy_plt_layout *lazy_plt;
1001
1002 /* Parameters describing non-lazy PLT generation. */
1003 const struct elf_x86_64_non_lazy_plt_layout *non_lazy_plt;
1004
4dfe6ac6
NC		 1005 union
1006 {
bffbf940
JJ		 1007 bfd_signed_vma refcount;
1008 bfd_vma offset;
1009 } tls_ld_got;
1010
67a4f2b7
AO		 1011 /* The amount of space used by the jump slots in the GOT. */
1012 bfd_vma sgotplt_jump_table_size;
1013
87d72d41
AM		 1014 /* Small local sym cache. */
1015 struct sym_cache sym_cache;
9f03412a 1016
351f65ca
L		 1017 bfd_vma (*r_info) (bfd_vma, bfd_vma);
1018 bfd_vma (*r_sym) (bfd_vma);
248775ba 1019 unsigned int pointer_r_type;
351f65ca
L		 1020 const char *dynamic_interpreter;
1021 int dynamic_interpreter_size;
1022
9f03412a
AO		 1023 /* _TLS_MODULE_BASE_ symbol. */
1024 struct bfd_link_hash_entry *tls_module_base;
c25bc9fc
L		 1025
1026 /* Used by local STT_GNU_IFUNC symbols. */
1027 htab_t loc_hash_table;
4dfe6ac6
NC		 1028 void * loc_hash_memory;
1029
1030 /* The offset into splt of the PLT entry for the TLS descriptor
1031 resolver. Special values are 0, if not necessary (or not found
1032 to be necessary yet), and -1 if needed but not determined
1033 yet. */
1034 bfd_vma tlsdesc_plt;
1035 /* The offset into sgot of the GOT entry used by the PLT entry
1036 above. */
1037 bfd_vma tlsdesc_got;
e1f98742
L		 1038
1039 /* The index of the next R_X86_64_JUMP_SLOT entry in .rela.plt. */
1040 bfd_vma next_jump_slot_index;
1041 /* The index of the next R_X86_64_IRELATIVE entry in .rela.plt. */
1042 bfd_vma next_irelative_index;
2df3368d
L		 1043
1044 /* TRUE if there are dynamic relocs against IFUNC symbols that apply
1045 to read-only sections. */
1046 bfd_boolean readonly_dynrelocs_against_ifunc;
c434dee6 1047};
70256ad8
AJ		 1048
1049/* Get the x86-64 ELF linker hash table from a link_info structure. */
8d88c4ca 1050
351f65ca 1051#define elf_x86_64_hash_table(p) \
4dfe6ac6 1052 (elf_hash_table_id ((struct elf_link_hash_table *) ((p)->hash)) \
351f65ca 1053 == X86_64_ELF_DATA ? ((struct elf_x86_64_link_hash_table *) ((p)->hash)) : NULL)
8d88c4ca 1054
351f65ca 1055#define elf_x86_64_compute_jump_table_size(htab) \
6de2ae4a 1056 ((htab)->elf.srelplt->reloc_count * GOT_ENTRY_SIZE)
67a4f2b7 1057
407443a3 1058/* Create an entry in an x86-64 ELF linker hash table. */
70256ad8
AJ		 1059
1060static struct bfd_hash_entry *
351f65ca
L		 1061elf_x86_64_link_hash_newfunc (struct bfd_hash_entry *entry,
1062 struct bfd_hash_table *table,
1063 const char *string)
70256ad8 1064{
70256ad8 1065 /* Allocate the structure if it has not already been allocated by a
c434dee6
AJ		 1066 subclass. */
1067 if (entry == NULL)
1068 {
a50b1753 1069 entry = (struct bfd_hash_entry *)
eed180f8
RM		 1070 bfd_hash_allocate (table,
1071 sizeof (struct elf_x86_64_link_hash_entry));
c434dee6
AJ		 1072 if (entry == NULL)
1073 return entry;
1074 }
70256ad8
AJ		 1075
1076 /* Call the allocation method of the superclass. */
c434dee6
AJ		 1077 entry = _bfd_elf_link_hash_newfunc (entry, table, string);
1078 if (entry != NULL)
70256ad8 1079 {
351f65ca 1080 struct elf_x86_64_link_hash_entry *eh;
c434dee6 1081
351f65ca 1082 eh = (struct elf_x86_64_link_hash_entry *) entry;
c434dee6 1083 eh->dyn_relocs = NULL;
bffbf940 1084 eh->tls_type = GOT_UNKNOWN;
bc696fd5 1085 eh->needs_copy = 0;
aec6b87e
L		 1086 eh->has_got_reloc = 0;
1087 eh->has_non_got_reloc = 0;
9e9821dd 1088 eh->no_finish_dynamic_symbol = 0;
e2cbcd91 1089 eh->tls_get_addr = 2;
04ebc307 1090 eh->func_pointer_refcount = 0;
f2c29a16 1091 eh->plt_second.offset = (bfd_vma) -1;
dd7e64d4 1092 eh->plt_got.offset = (bfd_vma) -1;
67a4f2b7 1093 eh->tlsdesc_got = (bfd_vma) -1;
70256ad8
AJ		 1094 }
1095
c434dee6 1096 return entry;
70256ad8
AJ		 1097}
1098
c25bc9fc
L		 1099/* Compute a hash of a local hash entry. We use elf_link_hash_entry
1100 for local symbol so that we can handle local STT_GNU_IFUNC symbols
1101 as global symbol. We reuse indx and dynstr_index for local symbol
1102 hash since they aren't used by global symbols in this backend. */
1103
1104static hashval_t
351f65ca 1105elf_x86_64_local_htab_hash (const void *ptr)
c25bc9fc
L		 1106{
1107 struct elf_link_hash_entry *h
1108 = (struct elf_link_hash_entry *) ptr;
d2149d72 1109 return ELF_LOCAL_SYMBOL_HASH (h->indx, h->dynstr_index);
c25bc9fc
L		 1110}
1111
1112/* Compare local hash entries. */
1113
1114static int
351f65ca 1115elf_x86_64_local_htab_eq (const void *ptr1, const void *ptr2)
c25bc9fc
L		 1116{
1117 struct elf_link_hash_entry *h1
1118 = (struct elf_link_hash_entry *) ptr1;
1119 struct elf_link_hash_entry *h2
1120 = (struct elf_link_hash_entry *) ptr2;
1121
1122 return h1->indx == h2->indx && h1->dynstr_index == h2->dynstr_index;
1123}
1124
1125/* Find and/or create a hash entry for local symbol. */
1126
1127static struct elf_link_hash_entry *
351f65ca
L		 1128elf_x86_64_get_local_sym_hash (struct elf_x86_64_link_hash_table *htab,
1129 bfd *abfd, const Elf_Internal_Rela *rel,
1130 bfd_boolean create)
c25bc9fc 1131{
351f65ca 1132 struct elf_x86_64_link_hash_entry e, *ret;
c25bc9fc 1133 asection *sec = abfd->sections;
d2149d72 1134 hashval_t h = ELF_LOCAL_SYMBOL_HASH (sec->id,
351f65ca 1135 htab->r_sym (rel->r_info));
c25bc9fc
L		 1136 void **slot;
1137
1138 e.elf.indx = sec->id;
351f65ca 1139 e.elf.dynstr_index = htab->r_sym (rel->r_info);
c25bc9fc
L		 1140 slot = htab_find_slot_with_hash (htab->loc_hash_table, &e, h,
1141 create ? INSERT : NO_INSERT);
1142
1143 if (!slot)
1144 return NULL;
1145
1146 if (*slot)
1147 {
351f65ca 1148 ret = (struct elf_x86_64_link_hash_entry *) *slot;
c25bc9fc
L		 1149 return &ret->elf;
1150 }
1151
351f65ca 1152 ret = (struct elf_x86_64_link_hash_entry *)
c25bc9fc 1153 objalloc_alloc ((struct objalloc *) htab->loc_hash_memory,
351f65ca 1154 sizeof (struct elf_x86_64_link_hash_entry));
c25bc9fc
L		 1155 if (ret)
1156 {
1157 memset (ret, 0, sizeof (*ret));
1158 ret->elf.indx = sec->id;
351f65ca 1159 ret->elf.dynstr_index = htab->r_sym (rel->r_info);
c25bc9fc 1160 ret->elf.dynindx = -1;
04ebc307 1161 ret->func_pointer_refcount = 0;
dd7e64d4 1162 ret->plt_got.offset = (bfd_vma) -1;
c25bc9fc
L		 1163 *slot = ret;
1164 }
1165 return &ret->elf;
1166}
1167
68faa637
AM		 1168/* Destroy an X86-64 ELF linker hash table. */
1169
1170static void
d495ab0d 1171elf_x86_64_link_hash_table_free (bfd *obfd)
68faa637
AM		 1172{
1173 struct elf_x86_64_link_hash_table *htab
d495ab0d 1174 = (struct elf_x86_64_link_hash_table *) obfd->link.hash;
68faa637
AM		 1175
1176 if (htab->loc_hash_table)
1177 htab_delete (htab->loc_hash_table);
1178 if (htab->loc_hash_memory)
1179 objalloc_free ((struct objalloc *) htab->loc_hash_memory);
d495ab0d 1180 _bfd_elf_link_hash_table_free (obfd);
68faa637
AM		 1181}
1182
8d88c4ca
NC		 1183/* Create an X86-64 ELF linker hash table. */
1184
1185static struct bfd_link_hash_table *
351f65ca 1186elf_x86_64_link_hash_table_create (bfd *abfd)
8d88c4ca 1187{
351f65ca
L		 1188 struct elf_x86_64_link_hash_table *ret;
1189 bfd_size_type amt = sizeof (struct elf_x86_64_link_hash_table);
8d88c4ca 1190
7bf52ea2 1191 ret = (struct elf_x86_64_link_hash_table *) bfd_zmalloc (amt);
c434dee6 1192 if (ret == NULL)
8d88c4ca
NC		 1193 return NULL;
1194
eb4ff4d6 1195 if (!_bfd_elf_link_hash_table_init (&ret->elf, abfd,
351f65ca
L		 1196 elf_x86_64_link_hash_newfunc,
1197 sizeof (struct elf_x86_64_link_hash_entry),
4dfe6ac6 1198 X86_64_ELF_DATA))
8d88c4ca 1199 {
e2d34d7d 1200 free (ret);
8d88c4ca
NC		 1201 return NULL;
1202 }
1203
351f65ca
L		 1204 if (ABI_64_P (abfd))
1205 {
1206 ret->r_info = elf64_r_info;
1207 ret->r_sym = elf64_r_sym;
248775ba 1208 ret->pointer_r_type = R_X86_64_64;
351f65ca
L		 1209 ret->dynamic_interpreter = ELF64_DYNAMIC_INTERPRETER;
1210 ret->dynamic_interpreter_size = sizeof ELF64_DYNAMIC_INTERPRETER;
1211 }
1212 else
1213 {
1214 ret->r_info = elf32_r_info;
1215 ret->r_sym = elf32_r_sym;
248775ba 1216 ret->pointer_r_type = R_X86_64_32;
351f65ca
L		 1217 ret->dynamic_interpreter = ELF32_DYNAMIC_INTERPRETER;
1218 ret->dynamic_interpreter_size = sizeof ELF32_DYNAMIC_INTERPRETER;
1219 }
1220
c25bc9fc 1221 ret->loc_hash_table = htab_try_create (1024,
351f65ca
L		 1222 elf_x86_64_local_htab_hash,
1223 elf_x86_64_local_htab_eq,
c25bc9fc
L		 1224 NULL);
1225 ret->loc_hash_memory = objalloc_create ();
1226 if (!ret->loc_hash_table || !ret->loc_hash_memory)
1227 {
d495ab0d 1228 elf_x86_64_link_hash_table_free (abfd);
c25bc9fc
L		 1229 return NULL;
1230 }
d495ab0d 1231 ret->elf.root.hash_table_free = elf_x86_64_link_hash_table_free;
c25bc9fc 1232
c434dee6
AJ		 1233 return &ret->elf.root;
1234}
1235
c434dee6
AJ		 1236/* Copy the extra info we tack onto an elf_link_hash_entry. */
1237
1238static void
351f65ca
L		 1239elf_x86_64_copy_indirect_symbol (struct bfd_link_info *info,
1240 struct elf_link_hash_entry *dir,
1241 struct elf_link_hash_entry *ind)
c434dee6 1242{
351f65ca 1243 struct elf_x86_64_link_hash_entry *edir, *eind;
c434dee6 1244
351f65ca
L		 1245 edir = (struct elf_x86_64_link_hash_entry *) dir;
1246 eind = (struct elf_x86_64_link_hash_entry *) ind;
c434dee6 1247
e81830c5
AM		 1248 edir->has_got_reloc |= eind->has_got_reloc;
1249 edir->has_non_got_reloc |= eind->has_non_got_reloc;
aec6b87e 1250
c434dee6
AJ		 1251 if (eind->dyn_relocs != NULL)
1252 {
1253 if (edir->dyn_relocs != NULL)
1254 {
e03a8ed8
L		 1255 struct elf_dyn_relocs **pp;
1256 struct elf_dyn_relocs *p;
c434dee6 1257
fcfa13d2 1258 /* Add reloc counts against the indirect sym to the direct sym
c434dee6
AJ		 1259 list. Merge any entries against the same section. */
1260 for (pp = &eind->dyn_relocs; (p = *pp) != NULL; )
1261 {
e03a8ed8 1262 struct elf_dyn_relocs *q;
c434dee6
AJ		 1263
1264 for (q = edir->dyn_relocs; q != NULL; q = q->next)
1265 if (q->sec == p->sec)
1266 {
1267 q->pc_count += p->pc_count;
1268 q->count += p->count;
1269 *pp = p->next;
1270 break;
1271 }
1272 if (q == NULL)
1273 pp = &p->next;
1274 }
1275 *pp = edir->dyn_relocs;
1276 }
1277
1278 edir->dyn_relocs = eind->dyn_relocs;
1279 eind->dyn_relocs = NULL;
1280 }
1281
bffbf940
JJ		 1282 if (ind->root.type == bfd_link_hash_indirect
1283 && dir->got.refcount <= 0)
1284 {
1285 edir->tls_type = eind->tls_type;
1286 eind->tls_type = GOT_UNKNOWN;
1287 }
1288
d40d037c
AJ		 1289 if (ELIMINATE_COPY_RELOCS
1290 && ind->root.type != bfd_link_hash_indirect
f5385ebf
AM		 1291 && dir->dynamic_adjusted)
1292 {
1293 /* If called to transfer flags for a weakdef during processing
1294 of elf_adjust_dynamic_symbol, don't copy non_got_ref.
1295 We clear it ourselves for ELIMINATE_COPY_RELOCS. */
e81830c5
AM		 1296 if (dir->versioned != versioned_hidden)
1297 dir->ref_dynamic |= ind->ref_dynamic;
f5385ebf
AM		 1298 dir->ref_regular |= ind->ref_regular;
1299 dir->ref_regular_nonweak |= ind->ref_regular_nonweak;
1300 dir->needs_plt |= ind->needs_plt;
1301 dir->pointer_equality_needed |= ind->pointer_equality_needed;
1302 }
d40d037c 1303 else
04ebc307
L		 1304 {
1305 if (eind->func_pointer_refcount > 0)
1306 {
1307 edir->func_pointer_refcount += eind->func_pointer_refcount;
1308 eind->func_pointer_refcount = 0;
1309 }
1310
1311 _bfd_elf_link_hash_copy_indirect (info, dir, ind);
1312 }
8d88c4ca
NC		 1313}
1314
b34976b6 1315static bfd_boolean
27482721 1316elf64_x86_64_elf_object_p (bfd *abfd)
bffbf940 1317{
8d88c4ca
NC		 1318 /* Set the right machine number for an x86-64 elf64 file. */
1319 bfd_default_set_arch_mach (abfd, bfd_arch_i386, bfd_mach_x86_64);
b34976b6 1320 return TRUE;
8d88c4ca
NC		 1321}
1322
8059fb19
RM		 1323static bfd_boolean
1324elf32_x86_64_elf_object_p (bfd *abfd)
1325{
1326 /* Set the right machine number for an x86-64 elf32 file. */
1327 bfd_default_set_arch_mach (abfd, bfd_arch_i386, bfd_mach_x64_32);
1328 return TRUE;
1329}
1330
142411ca
L		 1331/* Return TRUE if the TLS access code sequence support transition
1332 from R_TYPE. */
1333
1334static bfd_boolean
351f65ca
L		 1335elf_x86_64_check_tls_transition (bfd *abfd,
1336 struct bfd_link_info *info,
1337 asection *sec,
1338 bfd_byte *contents,
1339 Elf_Internal_Shdr *symtab_hdr,
1340 struct elf_link_hash_entry **sym_hashes,
1341 unsigned int r_type,
1342 const Elf_Internal_Rela *rel,
1343 const Elf_Internal_Rela *relend)
bffbf940 1344{
142411ca
L		 1345 unsigned int val;
1346 unsigned long r_symndx;
5c98a14e 1347 bfd_boolean largepic = FALSE;
142411ca
L		 1348 struct elf_link_hash_entry *h;
1349 bfd_vma offset;
351f65ca 1350 struct elf_x86_64_link_hash_table *htab;
e2cbcd91
L		 1351 bfd_byte *call;
1352 bfd_boolean indirect_call, tls_get_addr;
142411ca 1353
351f65ca 1354 htab = elf_x86_64_hash_table (info);
142411ca 1355 offset = rel->r_offset;
bffbf940 1356 switch (r_type)
142411ca
L		 1357 {
1358 case R_X86_64_TLSGD:
1359 case R_X86_64_TLSLD:
1360 if ((rel + 1) >= relend)
1361 return FALSE;
1362
1363 if (r_type == R_X86_64_TLSGD)
1364 {
52bc799a 1365 /* Check transition from GD access model. For 64bit, only
142411ca 1366 .byte 0x66; leaq foo@tlsgd(%rip), %rdi
e2cbcd91
L		 1367 .word 0x6666; rex64; call __tls_get_addr@PLT
1368 or
1369 .byte 0x66; leaq foo@tlsgd(%rip), %rdi
1370 .byte 0x66; rex64
1371 call *__tls_get_addr@GOTPCREL(%rip)
1372 which may be converted to
1373 addr32 call __tls_get_addr
52bc799a
L		 1374 can transit to different access model. For 32bit, only
1375 leaq foo@tlsgd(%rip), %rdi
e2cbcd91
L		 1376 .word 0x6666; rex64; call __tls_get_addr@PLT
1377 or
1378 leaq foo@tlsgd(%rip), %rdi
1379 .byte 0x66; rex64
1380 call *__tls_get_addr@GOTPCREL(%rip)
1381 which may be converted to
1382 addr32 call __tls_get_addr
1383 can transit to different access model. For largepic,
5c98a14e 1384 we also support:
e2cbcd91
L		 1385 leaq foo@tlsgd(%rip), %rdi
1386 movabsq $__tls_get_addr@pltoff, %rax
1387 addq $r15, %rax
1388 call *%rax
1389 or
5c98a14e
JJ		 1390 leaq foo@tlsgd(%rip), %rdi
1391 movabsq $__tls_get_addr@pltoff, %rax
1392 addq $rbx, %rax
e2cbcd91 1393 call *%rax */
142411ca 1394
fa289a5f
AM		 1395 static const unsigned char leaq[] = { 0x66, 0x48, 0x8d, 0x3d };
1396
5c98a14e 1397 if ((offset + 12) > sec->size)
142411ca 1398 return FALSE;
52bc799a 1399
e2cbcd91
L		 1400 call = contents + offset + 4;
1401 if (call[0] != 0x66
1402 || !((call[1] == 0x48
1403 && call[2] == 0xff
1404 && call[3] == 0x15)
1405 || (call[1] == 0x48
1406 && call[2] == 0x67
1407 && call[3] == 0xe8)
1408 || (call[1] == 0x66
1409 && call[2] == 0x48
1410 && call[3] == 0xe8)))
5c98a14e
JJ		 1411 {
1412 if (!ABI_64_P (abfd)
1413 || (offset + 19) > sec->size
1414 || offset < 3
e2cbcd91
L		 1415 || memcmp (call - 7, leaq + 1, 3) != 0
1416 || memcmp (call, "\x48\xb8", 2) != 0
1417 || call[11] != 0x01
1418 || call[13] != 0xff
1419 || call[14] != 0xd0
1420 || !((call[10] == 0x48 && call[12] == 0xd8)
1421 || (call[10] == 0x4c && call[12] == 0xf8)))
5c98a14e
JJ		 1422 return FALSE;
1423 largepic = TRUE;
1424 }
1425 else if (ABI_64_P (abfd))
52bc799a 1426 {
52bc799a 1427 if (offset < 4
fa289a5f 1428 || memcmp (contents + offset - 4, leaq, 4) != 0)
52bc799a
L		 1429 return FALSE;
1430 }
1431 else
1432 {
52bc799a 1433 if (offset < 3
fa289a5f 1434 || memcmp (contents + offset - 3, leaq + 1, 3) != 0)
52bc799a
L		 1435 return FALSE;
1436 }
e2cbcd91 1437 indirect_call = call[2] == 0xff;
142411ca
L		 1438 }
1439 else
1440 {
1441 /* Check transition from LD access model. Only
1442 leaq foo@tlsld(%rip), %rdi;
e2cbcd91
L		 1443 call __tls_get_addr@PLT
1444 or
1445 leaq foo@tlsld(%rip), %rdi;
1446 call *__tls_get_addr@GOTPCREL(%rip)
1447 which may be converted to
1448 addr32 call __tls_get_addr
5c98a14e
JJ		 1449 can transit to different access model. For largepic
1450 we also support:
e2cbcd91
L		 1451 leaq foo@tlsld(%rip), %rdi
1452 movabsq $__tls_get_addr@pltoff, %rax
1453 addq $r15, %rax
1454 call *%rax
1455 or
5c98a14e
JJ		 1456 leaq foo@tlsld(%rip), %rdi
1457 movabsq $__tls_get_addr@pltoff, %rax
1458 addq $rbx, %rax
e2cbcd91 1459 call *%rax */
142411ca 1460
fa289a5f 1461 static const unsigned char lea[] = { 0x48, 0x8d, 0x3d };
142411ca
L		 1462
1463 if (offset < 3 || (offset + 9) > sec->size)
1464 return FALSE;
1465
5c98a14e 1466 if (memcmp (contents + offset - 3, lea, 3) != 0)
142411ca 1467 return FALSE;
5c98a14e 1468
e2cbcd91
L		 1469 call = contents + offset + 4;
1470 if (!(call[0] == 0xe8
1471 || (call[0] == 0xff && call[1] == 0x15)
1472 || (call[0] == 0x67 && call[1] == 0xe8)))
5c98a14e
JJ		 1473 {
1474 if (!ABI_64_P (abfd)
1475 || (offset + 19) > sec->size
e2cbcd91
L		 1476 || memcmp (call, "\x48\xb8", 2) != 0
1477 || call[11] != 0x01
1478 || call[13] != 0xff
1479 || call[14] != 0xd0
1480 || !((call[10] == 0x48 && call[12] == 0xd8)
1481 || (call[10] == 0x4c && call[12] == 0xf8)))
5c98a14e
JJ		 1482 return FALSE;
1483 largepic = TRUE;
1484 }
e2cbcd91 1485 indirect_call = call[0] == 0xff;
142411ca
L		 1486 }
1487
351f65ca 1488 r_symndx = htab->r_sym (rel[1].r_info);
142411ca
L		 1489 if (r_symndx < symtab_hdr->sh_info)
1490 return FALSE;
1491
e2cbcd91 1492 tls_get_addr = FALSE;
142411ca 1493 h = sym_hashes[r_symndx - symtab_hdr->sh_info];
e2cbcd91
L		 1494 if (h != NULL && h->root.root.string != NULL)
1495 {
1496 struct elf_x86_64_link_hash_entry *eh
1497 = (struct elf_x86_64_link_hash_entry *) h;
1498 tls_get_addr = eh->tls_get_addr == 1;
1499 if (eh->tls_get_addr > 1)
1500 {
1501 /* Use strncmp to check __tls_get_addr since
1502 __tls_get_addr may be versioned. */
1503 if (strncmp (h->root.root.string, "__tls_get_addr", 14)
1504 == 0)
1505 {
1506 eh->tls_get_addr = 1;
1507 tls_get_addr = TRUE;
1508 }
1509 else
1510 eh->tls_get_addr = 0;
1511 }
1512 }
1513
1514 if (!tls_get_addr)
1515 return FALSE;
1516 else if (largepic)
1517 return ELF32_R_TYPE (rel[1].r_info) == R_X86_64_PLTOFF64;
1518 else if (indirect_call)
1519 return ELF32_R_TYPE (rel[1].r_info) == R_X86_64_GOTPCRELX;
1520 else
1521 return (ELF32_R_TYPE (rel[1].r_info) == R_X86_64_PC32
1522 || ELF32_R_TYPE (rel[1].r_info) == R_X86_64_PLT32);
142411ca
L		 1523
1524 case R_X86_64_GOTTPOFF:
1525 /* Check transition from IE access model:
4a4c5f25
L		 1526 mov foo@gottpoff(%rip), %reg
1527 add foo@gottpoff(%rip), %reg
142411ca
L		 1528 */
1529
4a4c5f25
L		 1530 /* Check REX prefix first. */
1531 if (offset >= 3 && (offset + 4) <= sec->size)
1532 {
1533 val = bfd_get_8 (abfd, contents + offset - 3);
1534 if (val != 0x48 && val != 0x4c)
1535 {
1536 /* X32 may have 0x44 REX prefix or no REX prefix. */
1537 if (ABI_64_P (abfd))
1538 return FALSE;
1539 }
1540 }
1541 else
1542 {
1543 /* X32 may not have any REX prefix. */
1544 if (ABI_64_P (abfd))
1545 return FALSE;
1546 if (offset < 2 || (offset + 3) > sec->size)
1547 return FALSE;
1548 }
142411ca
L		 1549
1550 val = bfd_get_8 (abfd, contents + offset - 2);
1551 if (val != 0x8b && val != 0x03)
1552 return FALSE;
1553
1554 val = bfd_get_8 (abfd, contents + offset - 1);
1555 return (val & 0xc7) == 5;
1556
1557 case R_X86_64_GOTPC32_TLSDESC:
1558 /* Check transition from GDesc access model:
1559 leaq x@tlsdesc(%rip), %rax
1560
1561 Make sure it's a leaq adding rip to a 32-bit offset
1562 into any register, although it's probably almost always
1563 going to be rax. */
1564
1565 if (offset < 3 || (offset + 4) > sec->size)
1566 return FALSE;
1567
1568 val = bfd_get_8 (abfd, contents + offset - 3);
1569 if ((val & 0xfb) != 0x48)
1570 return FALSE;
1571
1572 if (bfd_get_8 (abfd, contents + offset - 2) != 0x8d)
1573 return FALSE;
1574
1575 val = bfd_get_8 (abfd, contents + offset - 1);
1576 return (val & 0xc7) == 0x05;
1577
1578 case R_X86_64_TLSDESC_CALL:
1579 /* Check transition from GDesc access model:
1580 call *x@tlsdesc(%rax)
1581 */
1582 if (offset + 2 <= sec->size)
1583 {
1584 /* Make sure that it's a call *x@tlsdesc(%rax). */
e2cbcd91
L		 1585 call = contents + offset;
1586 return call[0] == 0xff && call[1] == 0x10;
142411ca
L		 1587 }
1588
1589 return FALSE;
1590
1591 default:
1592 abort ();
1593 }
1594}
1595
1596/* Return TRUE if the TLS access transition is OK or no transition
1597 will be performed. Update R_TYPE if there is a transition. */
1598
1599static bfd_boolean
351f65ca
L		 1600elf_x86_64_tls_transition (struct bfd_link_info *info, bfd *abfd,
1601 asection *sec, bfd_byte *contents,
1602 Elf_Internal_Shdr *symtab_hdr,
1603 struct elf_link_hash_entry **sym_hashes,
1604 unsigned int *r_type, int tls_type,
1605 const Elf_Internal_Rela *rel,
1606 const Elf_Internal_Rela *relend,
1607 struct elf_link_hash_entry *h,
bedfd056
L		 1608 unsigned long r_symndx,
1609 bfd_boolean from_relocate_section)
142411ca
L		 1610{
1611 unsigned int from_type = *r_type;
1612 unsigned int to_type = from_type;
1613 bfd_boolean check = TRUE;
1614
bb1cb422
L		 1615 /* Skip TLS transition for functions. */
1616 if (h != NULL
1617 && (h->type == STT_FUNC
1618 || h->type == STT_GNU_IFUNC))
1619 return TRUE;
1620
142411ca 1621 switch (from_type)
bffbf940
JJ		 1622 {
1623 case R_X86_64_TLSGD:
67a4f2b7
AO		 1624 case R_X86_64_GOTPC32_TLSDESC:
1625 case R_X86_64_TLSDESC_CALL:
bffbf940 1626 case R_X86_64_GOTTPOFF:
0e1862bb 1627 if (bfd_link_executable (info))
142411ca
L		 1628 {
1629 if (h == NULL)
1630 to_type = R_X86_64_TPOFF32;
1631 else
1632 to_type = R_X86_64_GOTTPOFF;
1633 }
1634
bedfd056
L		 1635 /* When we are called from elf_x86_64_relocate_section, there may
1636 be additional transitions based on TLS_TYPE. */
1637 if (from_relocate_section)
142411ca
L		 1638 {
1639 unsigned int new_to_type = to_type;
1640
0e1862bb 1641 if (bfd_link_executable (info)
142411ca
L		 1642 && h != NULL
1643 && h->dynindx == -1
1644 && tls_type == GOT_TLS_IE)
1645 new_to_type = R_X86_64_TPOFF32;
1646
1647 if (to_type == R_X86_64_TLSGD
1648 || to_type == R_X86_64_GOTPC32_TLSDESC
1649 || to_type == R_X86_64_TLSDESC_CALL)
1650 {
1651 if (tls_type == GOT_TLS_IE)
1652 new_to_type = R_X86_64_GOTTPOFF;
1653 }
1654
1655 /* We checked the transition before when we were called from
351f65ca 1656 elf_x86_64_check_relocs. We only want to check the new
142411ca
L		 1657 transition which hasn't been checked before. */
1658 check = new_to_type != to_type && from_type == to_type;
1659 to_type = new_to_type;
1660 }
1661
1662 break;
1663
bffbf940 1664 case R_X86_64_TLSLD:
0e1862bb 1665 if (bfd_link_executable (info))
142411ca
L		 1666 to_type = R_X86_64_TPOFF32;
1667 break;
1668
1669 default:
1670 return TRUE;
bffbf940
JJ		 1671 }
1672
142411ca
L		 1673 /* Return TRUE if there is no transition. */
1674 if (from_type == to_type)
1675 return TRUE;
1676
1677 /* Check if the transition can be performed. */
1678 if (check
351f65ca
L		 1679 && ! elf_x86_64_check_tls_transition (abfd, info, sec, contents,
1680 symtab_hdr, sym_hashes,
1681 from_type, rel, relend))
142411ca 1682 {
2f629d23 1683 reloc_howto_type *from, *to;
4c544807 1684 const char *name;
142411ca 1685
351f65ca
L		 1686 from = elf_x86_64_rtype_to_howto (abfd, from_type);
1687 to = elf_x86_64_rtype_to_howto (abfd, to_type);
142411ca 1688
4c544807
L		 1689 if (h)
1690 name = h->root.root.string;
1691 else
1692 {
351f65ca 1693 struct elf_x86_64_link_hash_table *htab;
4dfe6ac6 1694
351f65ca 1695 htab = elf_x86_64_hash_table (info);
4dfe6ac6
NC		 1696 if (htab == NULL)
1697 name = "*unknown*";
1698 else
1699 {
1700 Elf_Internal_Sym *isym;
1701
1702 isym = bfd_sym_from_r_symndx (&htab->sym_cache,
1703 abfd, r_symndx);
1704 name = bfd_elf_sym_name (abfd, symtab_hdr, isym, NULL);
1705 }
4c544807
L		 1706 }
1707
4eca0228 1708 _bfd_error_handler
695344c0 1709 /* xgettext:c-format */
142411ca
L		 1710 (_("%B: TLS transition from %s to %s against `%s' at 0x%lx "
1711 "in section `%A' failed"),
c08bb8dd
AM		 1712 abfd, from->name, to->name, name,
1713 (unsigned long) rel->r_offset, sec);
142411ca
L		 1714 bfd_set_error (bfd_error_bad_value);
1715 return FALSE;
1716 }
1717
1718 *r_type = to_type;
1719 return TRUE;
bffbf940
JJ		 1720}
1721
c1d11331
L		 1722/* Rename some of the generic section flags to better document how they
1723 are used here. */
338c190a
L		 1724#define need_convert_load sec_flg0
1725#define check_relocs_failed sec_flg1
1726
1727static bfd_boolean
1728elf_x86_64_need_pic (bfd *input_bfd, asection *sec,
1729 struct elf_link_hash_entry *h,
1730 Elf_Internal_Shdr *symtab_hdr,
1731 Elf_Internal_Sym *isym,
1732 reloc_howto_type *howto)
1733{
1734 const char *v = "";
1735 const char *und = "";
1736 const char *pic = "";
1737
1738 const char *name;
1739 if (h)
1740 {
1741 name = h->root.root.string;
1742 switch (ELF_ST_VISIBILITY (h->other))
1743 {
1744 case STV_HIDDEN:
1745 v = _("hidden symbol ");
1746 break;
1747 case STV_INTERNAL:
1748 v = _("internal symbol ");
1749 break;
1750 case STV_PROTECTED:
1751 v = _("protected symbol ");
1752 break;
1753 default:
1754 v = _("symbol ");
1755 pic = _("; recompile with -fPIC");
1756 break;
1757 }
1758
1759 if (!h->def_regular && !h->def_dynamic)
1760 und = _("undefined ");
1761 }
1762 else
1763 {
1764 name = bfd_elf_sym_name (input_bfd, symtab_hdr, isym, NULL);
1765 pic = _("; recompile with -fPIC");
1766 }
1767
695344c0 1768 /* xgettext:c-format */
4eca0228
AM		 1769 _bfd_error_handler (_("%B: relocation %s against %s%s`%s' can "
1770 "not be used when making a shared object%s"),
1771 input_bfd, howto->name, und, v, name, pic);
338c190a
L		 1772 bfd_set_error (bfd_error_bad_value);
1773 sec->check_relocs_failed = 1;
1774 return FALSE;
1775}
c1d11331 1776
c175a657
L		 1777/* With the local symbol, foo, we convert
1778 mov foo@GOTPCREL(%rip), %reg
1779 to
1780 lea foo(%rip), %reg
1781 and convert
1782 call/jmp *foo@GOTPCREL(%rip)
1783 to
1784 nop call foo/jmp foo nop
1785 When PIC is false, convert
1786 test %reg, foo@GOTPCREL(%rip)
1787 to
1788 test $foo, %reg
1789 and convert
1790 binop foo@GOTPCREL(%rip), %reg
1791 to
1792 binop $foo, %reg
1793 where binop is one of adc, add, and, cmp, or, sbb, sub, xor
1794 instructions. */
1795
1796static bfd_boolean
1797elf_x86_64_convert_load_reloc (bfd *abfd, asection *sec,
1798 bfd_byte *contents,
1799 Elf_Internal_Rela *irel,
1800 struct elf_link_hash_entry *h,
1801 bfd_boolean *converted,
1802 struct bfd_link_info *link_info)
1803{
1804 struct elf_x86_64_link_hash_table *htab;
1805 bfd_boolean is_pic;
1806 bfd_boolean require_reloc_pc32;
1807 bfd_boolean relocx;
1808 bfd_boolean to_reloc_pc32;
1809 asection *tsec;
1810 char symtype;
1811 bfd_signed_vma raddend;
1812 unsigned int opcode;
1813 unsigned int modrm;
1814 unsigned int r_type = ELF32_R_TYPE (irel->r_info);
1815 unsigned int r_symndx;
1816 bfd_vma toff;
1817 bfd_vma roff = irel->r_offset;
1818
1819 if (roff < (r_type == R_X86_64_REX_GOTPCRELX ? 3 : 2))
1820 return TRUE;
1821
1822 raddend = irel->r_addend;
1823 /* Addend for 32-bit PC-relative relocation must be -4. */
1824 if (raddend != -4)
1825 return TRUE;
1826
1827 htab = elf_x86_64_hash_table (link_info);
1828 is_pic = bfd_link_pic (link_info);
1829
1830 relocx = (r_type == R_X86_64_GOTPCRELX
1831 || r_type == R_X86_64_REX_GOTPCRELX);
1832
1833 /* TRUE if we can convert only to R_X86_64_PC32. Enable it for
1834 --no-relax. */
1835 require_reloc_pc32
1836 = link_info->disable_target_specific_optimizations > 1;
1837
1838 r_symndx = htab->r_sym (irel->r_info);
1839
1840 opcode = bfd_get_8 (abfd, contents + roff - 2);
1841
1842 /* Convert mov to lea since it has been done for a while. */
1843 if (opcode != 0x8b)
1844 {
1845 /* Only convert R_X86_64_GOTPCRELX and R_X86_64_REX_GOTPCRELX
1846 for call, jmp or one of adc, add, and, cmp, or, sbb, sub,
1847 test, xor instructions. */
1848 if (!relocx)
1849 return TRUE;
1850 }
1851
1852 /* We convert only to R_X86_64_PC32:
1853 1. Branch.
1854 2. R_X86_64_GOTPCREL since we can't modify REX byte.
1855 3. require_reloc_pc32 is true.
1856 4. PIC.
1857 */
1858 to_reloc_pc32 = (opcode == 0xff
1859 || !relocx
1860 || require_reloc_pc32
1861 || is_pic);
1862
1863 /* Get the symbol referred to by the reloc. */
1864 if (h == NULL)
1865 {
1866 Elf_Internal_Sym *isym
1867 = bfd_sym_from_r_symndx (&htab->sym_cache, abfd, r_symndx);
1868
1869 /* Skip relocation against undefined symbols. */
1870 if (isym->st_shndx == SHN_UNDEF)
1871 return TRUE;
1872
1873 symtype = ELF_ST_TYPE (isym->st_info);
1874
1875 if (isym->st_shndx == SHN_ABS)
1876 tsec = bfd_abs_section_ptr;
1877 else if (isym->st_shndx == SHN_COMMON)
1878 tsec = bfd_com_section_ptr;
1879 else if (isym->st_shndx == SHN_X86_64_LCOMMON)
1880 tsec = &_bfd_elf_large_com_section;
1881 else
1882 tsec = bfd_section_from_elf_index (abfd, isym->st_shndx);
1883
1884 toff = isym->st_value;
1885 }
1886 else
1887 {
1888 /* Undefined weak symbol is only bound locally in executable
1889 and its reference is resolved as 0 without relocation
1890 overflow. We can only perform this optimization for
1891 GOTPCRELX relocations since we need to modify REX byte.
1892 It is OK convert mov with R_X86_64_GOTPCREL to
1893 R_X86_64_PC32. */
1894 if ((relocx || opcode == 0x8b)
1895 && UNDEFINED_WEAK_RESOLVED_TO_ZERO (link_info,
1896 TRUE,
1897 elf_x86_64_hash_entry (h)))
1898 {
1899 if (opcode == 0xff)
1900 {
1901 /* Skip for branch instructions since R_X86_64_PC32
1902 may overflow. */
1903 if (require_reloc_pc32)
1904 return TRUE;
1905 }
1906 else if (relocx)
1907 {
1908 /* For non-branch instructions, we can convert to
1909 R_X86_64_32/R_X86_64_32S since we know if there
1910 is a REX byte. */
1911 to_reloc_pc32 = FALSE;
1912 }
1913
1914 /* Since we don't know the current PC when PIC is true,
1915 we can't convert to R_X86_64_PC32. */
1916 if (to_reloc_pc32 && is_pic)
1917 return TRUE;
1918
1919 goto convert;
1920 }
1921 /* Avoid optimizing GOTPCREL relocations againt _DYNAMIC since
1922 ld.so may use its link-time address. */
1923 else if ((h->def_regular
1924 || h->root.type == bfd_link_hash_defined
1925 || h->root.type == bfd_link_hash_defweak)
1926 && h != htab->elf.hdynamic
1927 && SYMBOL_REFERENCES_LOCAL (link_info, h))
1928 {
1929 /* bfd_link_hash_new or bfd_link_hash_undefined is
1930 set by an assignment in a linker script in
1931 bfd_elf_record_link_assignment. */
1932 if (h->def_regular
1933 && (h->root.type == bfd_link_hash_new
f02cb058
AM		 1934 || h->root.type == bfd_link_hash_undefined
1935 || ((h->root.type == bfd_link_hash_defined
1936 || h->root.type == bfd_link_hash_defweak)
1937 && h->root.u.def.section == bfd_und_section_ptr)))
c175a657
L		 1938 {
1939 /* Skip since R_X86_64_32/R_X86_64_32S may overflow. */
1940 if (require_reloc_pc32)
1941 return TRUE;
1942 goto convert;
1943 }
1944 tsec = h->root.u.def.section;
1945 toff = h->root.u.def.value;
1946 symtype = h->type;
1947 }
1948 else
1949 return TRUE;
1950 }
1951
2168b268
L		 1952 /* Don't convert GOTPCREL relocation against large section. */
1953 if (elf_section_data (tsec) != NULL
1954 && (elf_section_flags (tsec) & SHF_X86_64_LARGE) != 0)
1955 return TRUE;
1956
c175a657
L		 1957 /* We can only estimate relocation overflow for R_X86_64_PC32. */
1958 if (!to_reloc_pc32)
1959 goto convert;
1960
1961 if (tsec->sec_info_type == SEC_INFO_TYPE_MERGE)
1962 {
1963 /* At this stage in linking, no SEC_MERGE symbol has been
1964 adjusted, so all references to such symbols need to be
1965 passed through _bfd_merged_section_offset. (Later, in
1966 relocate_section, all SEC_MERGE symbols *except* for
1967 section symbols have been adjusted.)
1968
1969 gas may reduce relocations against symbols in SEC_MERGE
1970 sections to a relocation against the section symbol when
1971 the original addend was zero. When the reloc is against
1972 a section symbol we should include the addend in the
1973 offset passed to _bfd_merged_section_offset, since the
1974 location of interest is the original symbol. On the
1975 other hand, an access to "sym+addend" where "sym" is not
1976 a section symbol should not include the addend; Such an
1977 access is presumed to be an offset from "sym"; The
1978 location of interest is just "sym". */
1979 if (symtype == STT_SECTION)
1980 toff += raddend;
1981
1982 toff = _bfd_merged_section_offset (abfd, &tsec,
1983 elf_section_data (tsec)->sec_info,
1984 toff);
1985
1986 if (symtype != STT_SECTION)
1987 toff += raddend;
1988 }
1989 else
1990 toff += raddend;
1991
1992 /* Don't convert if R_X86_64_PC32 relocation overflows. */
1993 if (tsec->output_section == sec->output_section)
1994 {
1995 if ((toff - roff + 0x80000000) > 0xffffffff)
1996 return TRUE;
1997 }
1998 else
1999 {
2000 bfd_signed_vma distance;
2001
2002 /* At this point, we don't know the load addresses of TSEC
2003 section nor SEC section. We estimate the distrance between
2004 SEC and TSEC. We store the estimated distances in the
2005 compressed_size field of the output section, which is only
2006 used to decompress the compressed input section. */
2007 if (sec->output_section->compressed_size == 0)
2008 {
2009 asection *asect;
2010 bfd_size_type size = 0;
2011 for (asect = link_info->output_bfd->sections;
2012 asect != NULL;
2013 asect = asect->next)
2014 /* Skip debug sections since compressed_size is used to
2015 compress debug sections. */
2016 if ((asect->flags & SEC_DEBUGGING) == 0)
2017 {
2018 asection *i;
2019 for (i = asect->map_head.s;
2020 i != NULL;
2021 i = i->map_head.s)
2022 {
2023 size = align_power (size, i->alignment_power);
2024 size += i->size;
2025 }
2026 asect->compressed_size = size;
2027 }
2028 }
2029
2030 /* Don't convert GOTPCREL relocations if TSEC isn't placed
2031 after SEC. */
2032 distance = (tsec->output_section->compressed_size
2033 - sec->output_section->compressed_size);
2034 if (distance < 0)
2035 return TRUE;
2036
2037 /* Take PT_GNU_RELRO segment into account by adding
2038 maxpagesize. */
2039 if ((toff + distance + get_elf_backend_data (abfd)->maxpagesize
2040 - roff + 0x80000000) > 0xffffffff)
2041 return TRUE;
2042 }
2043
2044convert:
2045 if (opcode == 0xff)
2046 {
2047 /* We have "call/jmp *foo@GOTPCREL(%rip)". */
2048 unsigned int nop;
2049 unsigned int disp;
2050 bfd_vma nop_offset;
2051
2052 /* Convert R_X86_64_GOTPCRELX and R_X86_64_REX_GOTPCRELX to
2053 R_X86_64_PC32. */
2054 modrm = bfd_get_8 (abfd, contents + roff - 1);
2055 if (modrm == 0x25)
2056 {
2057 /* Convert to "jmp foo nop". */
2058 modrm = 0xe9;
2059 nop = NOP_OPCODE;
2060 nop_offset = irel->r_offset + 3;
2061 disp = bfd_get_32 (abfd, contents + irel->r_offset);
2062 irel->r_offset -= 1;
2063 bfd_put_32 (abfd, disp, contents + irel->r_offset);
2064 }
2065 else
2066 {
e2cbcd91
L		 2067 struct elf_x86_64_link_hash_entry *eh
2068 = (struct elf_x86_64_link_hash_entry *) h;
2069
c175a657
L		 2070 /* Convert to "nop call foo". ADDR_PREFIX_OPCODE
2071 is a nop prefix. */
2072 modrm = 0xe8;
e2cbcd91
L		 2073 /* To support TLS optimization, always use addr32 prefix for
2074 "call *__tls_get_addr@GOTPCREL(%rip)". */
2075 if (eh && eh->tls_get_addr == 1)
c175a657 2076 {
e2cbcd91
L		 2077 nop = 0x67;
2078 nop_offset = irel->r_offset - 2;
c175a657
L		 2079 }
2080 else
e2cbcd91
L		 2081 {
2082 nop = link_info->call_nop_byte;
2083 if (link_info->call_nop_as_suffix)
2084 {
2085 nop_offset = irel->r_offset + 3;
2086 disp = bfd_get_32 (abfd, contents + irel->r_offset);
2087 irel->r_offset -= 1;
2088 bfd_put_32 (abfd, disp, contents + irel->r_offset);
2089 }
2090 else
2091 nop_offset = irel->r_offset - 2;
2092 }
c175a657
L		 2093 }
2094 bfd_put_8 (abfd, nop, contents + nop_offset);
2095 bfd_put_8 (abfd, modrm, contents + irel->r_offset - 1);
2096 r_type = R_X86_64_PC32;
2097 }
2098 else
2099 {
2100 unsigned int rex;
2101 unsigned int rex_mask = REX_R;
2102
2103 if (r_type == R_X86_64_REX_GOTPCRELX)
2104 rex = bfd_get_8 (abfd, contents + roff - 3);
2105 else
2106 rex = 0;
2107
2108 if (opcode == 0x8b)
2109 {
2110 if (to_reloc_pc32)
2111 {
2112 /* Convert "mov foo@GOTPCREL(%rip), %reg" to
2113 "lea foo(%rip), %reg". */
2114 opcode = 0x8d;
2115 r_type = R_X86_64_PC32;
2116 }
2117 else
2118 {
2119 /* Convert "mov foo@GOTPCREL(%rip), %reg" to
2120 "mov $foo, %reg". */
2121 opcode = 0xc7;
2122 modrm = bfd_get_8 (abfd, contents + roff - 1);
2123 modrm = 0xc0 | (modrm & 0x38) >> 3;
2124 if ((rex & REX_W) != 0
2125 && ABI_64_P (link_info->output_bfd))
2126 {
2127 /* Keep the REX_W bit in REX byte for LP64. */
2128 r_type = R_X86_64_32S;
2129 goto rewrite_modrm_rex;
2130 }
2131 else
2132 {
2133 /* If the REX_W bit in REX byte isn't needed,
2134 use R_X86_64_32 and clear the W bit to avoid
2135 sign-extend imm32 to imm64. */
2136 r_type = R_X86_64_32;
2137 /* Clear the W bit in REX byte. */
2138 rex_mask |= REX_W;
2139 goto rewrite_modrm_rex;
2140 }
2141 }
2142 }
2143 else
2144 {
2145 /* R_X86_64_PC32 isn't supported. */
2146 if (to_reloc_pc32)
2147 return TRUE;
2148
2149 modrm = bfd_get_8 (abfd, contents + roff - 1);
2150 if (opcode == 0x85)
2151 {
2152 /* Convert "test %reg, foo@GOTPCREL(%rip)" to
2153 "test $foo, %reg". */
2154 modrm = 0xc0 | (modrm & 0x38) >> 3;
2155 opcode = 0xf7;
2156 }
2157 else
2158 {
2159 /* Convert "binop foo@GOTPCREL(%rip), %reg" to
2160 "binop $foo, %reg". */
2161 modrm = 0xc0 | (modrm & 0x38) >> 3 | (opcode & 0x3c);
2162 opcode = 0x81;
2163 }
2164
2165 /* Use R_X86_64_32 with 32-bit operand to avoid relocation
2166 overflow when sign-extending imm32 to imm64. */
2167 r_type = (rex & REX_W) != 0 ? R_X86_64_32S : R_X86_64_32;
2168
2169rewrite_modrm_rex:
2170 bfd_put_8 (abfd, modrm, contents + roff - 1);
2171
2172 if (rex)
2173 {
2174 /* Move the R bit to the B bit in REX byte. */
2175 rex = (rex & ~rex_mask) | (rex & REX_R) >> 2;
2176 bfd_put_8 (abfd, rex, contents + roff - 3);
2177 }
2178
2179 /* No addend for R_X86_64_32/R_X86_64_32S relocations. */
2180 irel->r_addend = 0;
2181 }
2182
2183 bfd_put_8 (abfd, opcode, contents + roff - 2);
2184 }
2185
2186 irel->r_info = htab->r_info (r_symndx, r_type);
2187
2188 *converted = TRUE;
2189
2190 return TRUE;
2191}
2192
70256ad8 2193/* Look through the relocs for a section during the first phase, and
c434dee6
AJ		 2194 calculate needed space in the global offset table, procedure
2195 linkage table, and dynamic reloc sections. */
70256ad8 2196
b34976b6 2197static bfd_boolean
351f65ca
L		 2198elf_x86_64_check_relocs (bfd *abfd, struct bfd_link_info *info,
2199 asection *sec,
2200 const Elf_Internal_Rela *relocs)
70256ad8 2201{
351f65ca 2202 struct elf_x86_64_link_hash_table *htab;
70256ad8
AJ		 2203 Elf_Internal_Shdr *symtab_hdr;
2204 struct elf_link_hash_entry **sym_hashes;
70256ad8
AJ		 2205 const Elf_Internal_Rela *rel;
2206 const Elf_Internal_Rela *rel_end;
70256ad8 2207 asection *sreloc;
bedfd056 2208 bfd_byte *contents;
70256ad8 2209
0e1862bb 2210 if (bfd_link_relocatable (info))
b34976b6 2211 return TRUE;
70256ad8 2212
081b1afe
L		 2213 /* Don't do anything special with non-loaded, non-alloced sections.
2214 In particular, any relocs in such sections should not affect GOT
2215 and PLT reference counting (ie. we don't allow them to create GOT
2216 or PLT entries), there's no possibility or desire to optimize TLS
2217 relocs, and there's not much point in propagating relocs to shared
2218 libs that the dynamic linker won't relocate. */
2219 if ((sec->flags & SEC_ALLOC) == 0)
2220 return TRUE;
2221
0ffa91dd
NC		 2222 BFD_ASSERT (is_x86_64_elf (abfd));
2223
351f65ca 2224 htab = elf_x86_64_hash_table (info);
4dfe6ac6 2225 if (htab == NULL)
afd9acee
L		 2226 {
2227 sec->check_relocs_failed = 1;
2228 return FALSE;
2229 }
4dfe6ac6 2230
bedfd056
L		 2231 /* Get the section contents. */
2232 if (elf_section_data (sec)->this_hdr.contents != NULL)
2233 contents = elf_section_data (sec)->this_hdr.contents;
2234 else if (!bfd_malloc_and_get_section (abfd, sec, &contents))
2235 {
2236 sec->check_relocs_failed = 1;
2237 return FALSE;
2238 }
2239
0ffa91dd 2240 symtab_hdr = &elf_symtab_hdr (abfd);
70256ad8 2241 sym_hashes = elf_sym_hashes (abfd);
70256ad8 2242
c434dee6 2243 sreloc = NULL;
cbe950e9 2244
70256ad8
AJ		 2245 rel_end = relocs + sec->reloc_count;
2246 for (rel = relocs; rel < rel_end; rel++)
2247 {
bffbf940 2248 unsigned int r_type;
70256ad8
AJ		 2249 unsigned long r_symndx;
2250 struct elf_link_hash_entry *h;
aec6b87e 2251 struct elf_x86_64_link_hash_entry *eh;
4c544807
L		 2252 Elf_Internal_Sym *isym;
2253 const char *name;
06a6a421 2254 bfd_boolean size_reloc;
70256ad8 2255
351f65ca
L		 2256 r_symndx = htab->r_sym (rel->r_info);
2257 r_type = ELF32_R_TYPE (rel->r_info);
c434dee6
AJ		 2258
2259 if (r_symndx >= NUM_SHDR_ENTRIES (symtab_hdr))
2260 {
695344c0 2261 /* xgettext:c-format */
4eca0228
AM		 2262 _bfd_error_handler (_("%B: bad symbol index: %d"),
2263 abfd, r_symndx);
afd9acee 2264 goto error_return;
c434dee6
AJ		 2265 }
2266
70256ad8 2267 if (r_symndx < symtab_hdr->sh_info)
c25bc9fc
L		 2268 {
2269 /* A local symbol. */
c2e61a4e
L		 2270 isym = bfd_sym_from_r_symndx (&htab->sym_cache,
2271 abfd, r_symndx);
2272 if (isym == NULL)
afd9acee 2273 goto error_return;
c25bc9fc
L		 2274
2275 /* Check relocation against local STT_GNU_IFUNC symbol. */
351f65ca 2276 if (ELF_ST_TYPE (isym->st_info) == STT_GNU_IFUNC)
c25bc9fc 2277 {
351f65ca
L		 2278 h = elf_x86_64_get_local_sym_hash (htab, abfd, rel,
2279 TRUE);
c25bc9fc 2280 if (h == NULL)
afd9acee 2281 goto error_return;
6bbec505 2282
c25bc9fc 2283 /* Fake a STT_GNU_IFUNC symbol. */
6322e5c5
L		 2284 h->root.root.string = bfd_elf_sym_name (abfd, symtab_hdr,
2285 isym, NULL);
c25bc9fc
L		 2286 h->type = STT_GNU_IFUNC;
2287 h->def_regular = 1;
2288 h->ref_regular = 1;
2289 h->forced_local = 1;
2290 h->root.type = bfd_link_hash_defined;
2291 }
2292 else
2293 h = NULL;
2294 }
70256ad8 2295 else
71cb9464 2296 {
4c544807 2297 isym = NULL;
71cb9464
L		 2298 h = sym_hashes[r_symndx - symtab_hdr->sh_info];
2299 while (h->root.type == bfd_link_hash_indirect
2300 || h->root.type == bfd_link_hash_warning)
2301 h = (struct elf_link_hash_entry *) h->root.u.i.link;
c25bc9fc 2302 }
cbe950e9 2303
d1534d16
L		 2304 /* Check invalid x32 relocations. */
2305 if (!ABI_64_P (abfd))
2306 switch (r_type)
2307 {
2308 default:
2309 break;
2310
d1534d16
L		 2311 case R_X86_64_DTPOFF64:
2312 case R_X86_64_TPOFF64:
2313 case R_X86_64_PC64:
2314 case R_X86_64_GOTOFF64:
2315 case R_X86_64_GOT64:
2316 case R_X86_64_GOTPCREL64:
2317 case R_X86_64_GOTPC64:
2318 case R_X86_64_GOTPLT64:
2319 case R_X86_64_PLTOFF64:
2320 {
2321 if (h)
2322 name = h->root.root.string;
2323 else
2324 name = bfd_elf_sym_name (abfd, symtab_hdr, isym,
2325 NULL);
4eca0228 2326 _bfd_error_handler
695344c0 2327 /* xgettext:c-format */
d1534d16
L		 2328 (_("%B: relocation %s against symbol `%s' isn't "
2329 "supported in x32 mode"), abfd,
2330 x86_64_elf_howto_table[r_type].name, name);
2331 bfd_set_error (bfd_error_bad_value);
afd9acee 2332 goto error_return;
d1534d16
L		 2333 }
2334 break;
2335 }
2336
c25bc9fc
L		 2337 if (h != NULL)
2338 {
ad1e85de
L		 2339 /* It is referenced by a non-shared object. */
2340 h->ref_regular = 1;
bc4e12de 2341 h->root.non_ir_ref_regular = 1;
13a2df29
L		 2342
2343 if (h->type == STT_GNU_IFUNC)
2344 elf_tdata (info->output_bfd)->has_gnu_symbols
2345 |= elf_gnu_symbol_ifunc;
71cb9464 2346 }
70256ad8 2347
bedfd056 2348 if (! elf_x86_64_tls_transition (info, abfd, sec, contents,
351f65ca
L		 2349 symtab_hdr, sym_hashes,
2350 &r_type, GOT_UNKNOWN,
bedfd056 2351 rel, rel_end, h, r_symndx, FALSE))
afd9acee 2352 goto error_return;
142411ca 2353
aec6b87e 2354 eh = (struct elf_x86_64_link_hash_entry *) h;
bffbf940 2355 switch (r_type)
70256ad8 2356 {
bffbf940
JJ		 2357 case R_X86_64_TLSLD:
2358 htab->tls_ld_got.refcount += 1;
2359 goto create_got;
2360
2361 case R_X86_64_TPOFF32:
0e1862bb 2362 if (!bfd_link_executable (info) && ABI_64_P (abfd))
338c190a
L		 2363 return elf_x86_64_need_pic (abfd, sec, h, symtab_hdr, isym,
2364 &x86_64_elf_howto_table[r_type]);
aec6b87e
L		 2365 if (eh != NULL)
2366 eh->has_got_reloc = 1;
bffbf940 2367 break;
c434dee6 2368
bffbf940 2369 case R_X86_64_GOTTPOFF:
0e1862bb 2370 if (!bfd_link_executable (info))
bffbf940
JJ		 2371 info->flags |= DF_STATIC_TLS;
2372 /* Fall through */
70256ad8 2373
bffbf940
JJ		 2374 case R_X86_64_GOT32:
2375 case R_X86_64_GOTPCREL:
56ceb5b5
L		 2376 case R_X86_64_GOTPCRELX:
2377 case R_X86_64_REX_GOTPCRELX:
bffbf940 2378 case R_X86_64_TLSGD:
7b81dfbb
AJ		 2379 case R_X86_64_GOT64:
2380 case R_X86_64_GOTPCREL64:
2381 case R_X86_64_GOTPLT64:
67a4f2b7
AO		 2382 case R_X86_64_GOTPC32_TLSDESC:
2383 case R_X86_64_TLSDESC_CALL:
bffbf940
JJ		 2384 /* This symbol requires a global offset table entry. */
2385 {
2386 int tls_type, old_tls_type;
2387
2388 switch (r_type)
2389 {
2390 default: tls_type = GOT_NORMAL; break;
2391 case R_X86_64_TLSGD: tls_type = GOT_TLS_GD; break;
2392 case R_X86_64_GOTTPOFF: tls_type = GOT_TLS_IE; break;
67a4f2b7
AO		 2393 case R_X86_64_GOTPC32_TLSDESC:
2394 case R_X86_64_TLSDESC_CALL:
2395 tls_type = GOT_TLS_GDESC; break;
bffbf940
JJ		 2396 }
2397
2398 if (h != NULL)
2399 {
2400 h->got.refcount += 1;
aec6b87e 2401 old_tls_type = eh->tls_type;
bffbf940
JJ		 2402 }
2403 else
2404 {
2405 bfd_signed_vma *local_got_refcounts;
2406
2407 /* This is a global offset table entry for a local symbol. */
2408 local_got_refcounts = elf_local_got_refcounts (abfd);
2409 if (local_got_refcounts == NULL)
2410 {
2411 bfd_size_type size;
2412
2413 size = symtab_hdr->sh_info;
67a4f2b7
AO		 2414 size *= sizeof (bfd_signed_vma)
2415 + sizeof (bfd_vma) + sizeof (char);
bffbf940
JJ		 2416 local_got_refcounts = ((bfd_signed_vma *)
2417 bfd_zalloc (abfd, size));
2418 if (local_got_refcounts == NULL)
afd9acee 2419 goto error_return;
bffbf940 2420 elf_local_got_refcounts (abfd) = local_got_refcounts;
351f65ca 2421 elf_x86_64_local_tlsdesc_gotent (abfd)
67a4f2b7 2422 = (bfd_vma *) (local_got_refcounts + symtab_hdr->sh_info);
351f65ca 2423 elf_x86_64_local_got_tls_type (abfd)
67a4f2b7 2424 = (char *) (local_got_refcounts + 2 * symtab_hdr->sh_info);
bffbf940
JJ		 2425 }
2426 local_got_refcounts[r_symndx] += 1;
2427 old_tls_type
351f65ca 2428 = elf_x86_64_local_got_tls_type (abfd) [r_symndx];
bffbf940
JJ		 2429 }
2430
2431 /* If a TLS symbol is accessed using IE at least once,
2432 there is no point to use dynamic model for it. */
2433 if (old_tls_type != tls_type && old_tls_type != GOT_UNKNOWN
67a4f2b7
AO		 2434 && (! GOT_TLS_GD_ANY_P (old_tls_type)
2435 || tls_type != GOT_TLS_IE))
bffbf940 2436 {
67a4f2b7 2437 if (old_tls_type == GOT_TLS_IE && GOT_TLS_GD_ANY_P (tls_type))
bffbf940 2438 tls_type = old_tls_type;
67a4f2b7
AO		 2439 else if (GOT_TLS_GD_ANY_P (old_tls_type)
2440 && GOT_TLS_GD_ANY_P (tls_type))
2441 tls_type |= old_tls_type;
bffbf940
JJ		 2442 else
2443 {
09a24cbf 2444 if (h)
4c544807
L		 2445 name = h->root.root.string;
2446 else
2447 name = bfd_elf_sym_name (abfd, symtab_hdr,
2448 isym, NULL);
4eca0228 2449 _bfd_error_handler
695344c0 2450 /* xgettext:c-format */
63a5468a
AM		 2451 (_("%B: '%s' accessed both as normal and"
2452 " thread local symbol"),
4c544807 2453 abfd, name);
68c4a57e 2454 bfd_set_error (bfd_error_bad_value);
afd9acee 2455 goto error_return;
bffbf940
JJ		 2456 }
2457 }
2458
2459 if (old_tls_type != tls_type)
2460 {
aec6b87e
L		 2461 if (eh != NULL)
2462 eh->tls_type = tls_type;
bffbf940 2463 else
351f65ca 2464 elf_x86_64_local_got_tls_type (abfd) [r_symndx] = tls_type;
bffbf940
JJ		 2465 }
2466 }
c434dee6
AJ		 2467 /* Fall through */
2468
d6ab8113
JB		 2469 case R_X86_64_GOTOFF64:
2470 case R_X86_64_GOTPC32:
7b81dfbb 2471 case R_X86_64_GOTPC64:
bffbf940 2472 create_got:
aec6b87e
L		 2473 if (eh != NULL)
2474 eh->has_got_reloc = 1;
70256ad8
AJ		 2475 break;
2476
2477 case R_X86_64_PLT32:
c3320543 2478 case R_X86_64_PLT32_BND:
70256ad8 2479 /* This symbol requires a procedure linkage table entry. We
407443a3
AJ		 2480 actually build the entry in adjust_dynamic_symbol,
2481 because this might be a case of linking PIC code which is
2482 never referenced by a dynamic object, in which case we
2483 don't need to generate a procedure linkage table entry
2484 after all. */
70256ad8
AJ		 2485
2486 /* If this is a local symbol, we resolve it directly without
407443a3 2487 creating a procedure linkage table entry. */
70256ad8
AJ		 2488 if (h == NULL)
2489 continue;
2490
aec6b87e 2491 eh->has_got_reloc = 1;
f5385ebf 2492 h->needs_plt = 1;
51b64d56 2493 h->plt.refcount += 1;
70256ad8
AJ		 2494 break;
2495
7b81dfbb
AJ		 2496 case R_X86_64_PLTOFF64:
2497 /* This tries to form the 'address' of a function relative
2498 to GOT. For global symbols we need a PLT entry. */
2499 if (h != NULL)
2500 {
2501 h->needs_plt = 1;
2502 h->plt.refcount += 1;
2503 }
2504 goto create_got;
2505
6a3e1bae
L		 2506 case R_X86_64_SIZE32:
2507 case R_X86_64_SIZE64:
06a6a421 2508 size_reloc = TRUE;
6a3e1bae
L		 2509 goto do_size;
2510
248775ba
L		 2511 case R_X86_64_32:
2512 if (!ABI_64_P (abfd))
2513 goto pointer;
1a0670f3 2514 /* Fall through. */
cc78d0af
AJ		 2515 case R_X86_64_8:
2516 case R_X86_64_16:
70256ad8 2517 case R_X86_64_32S:
338c190a
L		 2518 /* Check relocation overflow as these relocs may lead to
2519 run-time relocation overflow. Don't error out for
1b71fb54 2520 sections we don't care about, such as debug sections or
338c190a 2521 when relocation overflow check is disabled. */
4c10bbaa 2522 if (!info->no_reloc_overflow_check
338c190a
L		 2523 && (bfd_link_pic (info)
2524 || (bfd_link_executable (info)
2525 && h != NULL
2526 && !h->def_regular
2527 && h->def_dynamic
081b1afe 2528 && (sec->flags & SEC_READONLY) == 0)))
338c190a
L		 2529 return elf_x86_64_need_pic (abfd, sec, h, symtab_hdr, isym,
2530 &x86_64_elf_howto_table[r_type]);
1b71fb54
AJ		 2531 /* Fall through. */
2532
c434dee6
AJ		 2533 case R_X86_64_PC8:
2534 case R_X86_64_PC16:
70256ad8 2535 case R_X86_64_PC32:
c3320543 2536 case R_X86_64_PC32_BND:
d6ab8113 2537 case R_X86_64_PC64:
1b71fb54 2538 case R_X86_64_64:
248775ba 2539pointer:
aec6b87e
L		 2540 if (eh != NULL && (sec->flags & SEC_CODE) != 0)
2541 eh->has_non_got_reloc = 1;
bf52d7c7
L		 2542 /* We are called after all symbols have been resolved. Only
2543 relocation against STT_GNU_IFUNC symbol must go through
2544 PLT. */
d1ed1c7d
L		 2545 if (h != NULL
2546 && (bfd_link_executable (info)
bf52d7c7 2547 || h->type == STT_GNU_IFUNC))
c434dee6
AJ		 2548 {
2549 /* If this reloc is in a read-only section, we might
2550 need a copy reloc. We can't check reliably at this
2551 stage whether the section is read-only, as input
2552 sections have not yet been mapped to output sections.
2553 Tentatively set the flag for now, and correct in
2554 adjust_dynamic_symbol. */
f5385ebf 2555 h->non_got_ref = 1;
c434dee6 2556
233cc9c1
L		 2557 /* We may need a .plt entry if the symbol is a function
2558 defined in a shared lib or is a STT_GNU_IFUNC function
2559 referenced from the code or read-only section. */
2560 if (!h->def_regular
2561 || (sec->flags & (SEC_CODE | SEC_READONLY)) != 0)
2562 h->plt.refcount += 1;
2563
5db4f0d3
L		 2564 if (r_type == R_X86_64_PC32)
2565 {
2566 /* Since something like ".long foo - ." may be used
2567 as pointer, make sure that PLT is used if foo is
2568 a function defined in a shared library. */
2569 if ((sec->flags & SEC_CODE) == 0)
2570 h->pointer_equality_needed = 1;
2571 }
2572 else if (r_type != R_X86_64_PC32_BND
2573 && r_type != R_X86_64_PC64)
04ebc307
L		 2574 {
2575 h->pointer_equality_needed = 1;
2576 /* At run-time, R_X86_64_64 can be resolved for both
2577 x86-64 and x32. But R_X86_64_32 and R_X86_64_32S
2578 can only be resolved for x32. */
2579 if ((sec->flags & SEC_READONLY) == 0
2580 && (r_type == R_X86_64_64
2581 || (!ABI_64_P (abfd)
2582 && (r_type == R_X86_64_32
2583 || r_type == R_X86_64_32S))))
aec6b87e 2584 eh->func_pointer_refcount += 1;
04ebc307 2585 }
c434dee6 2586 }
70256ad8 2587
06a6a421 2588 size_reloc = FALSE;
6a3e1bae 2589do_size:
70256ad8
AJ		 2590 /* If we are creating a shared library, and this is a reloc
2591 against a global symbol, or a non PC relative reloc
2592 against a local symbol, then we need to copy the reloc
2593 into the shared library. However, if we are linking with
2594 -Bsymbolic, we do not need to copy a reloc against a
2595 global symbol which is defined in an object we are
407443a3 2596 including in the link (i.e., DEF_REGULAR is set). At
70256ad8
AJ		 2597 this point we have not seen all the input files, so it is
2598 possible that DEF_REGULAR is not set now but will be set
c434dee6
AJ		 2599 later (it is never cleared). In case of a weak definition,
2600 DEF_REGULAR may be cleared later by a strong definition in
2601 a shared library. We account for that possibility below by
2602 storing information in the relocs_copied field of the hash
2603 table entry. A similar situation occurs when creating
2604 shared libraries and symbol visibility changes render the
31c0ebfe 2605 symbol local.
c434dee6
AJ		 2606
2607 If on the other hand, we are creating an executable, we
2608 may need to keep relocations for symbols satisfied by a
2609 dynamic library if we manage to avoid copy relocs for the
233cc9c1
L		 2610 symbol.
2611
2612 Generate dynamic pointer relocation against STT_GNU_IFUNC
2613 symbol in the non-code section. */
081b1afe
L		 2614 if ((bfd_link_pic (info)
2615 && (! IS_X86_64_PCREL_TYPE (r_type)
2616 || (h != NULL
2617 && (! (bfd_link_pie (info)
2618 || SYMBOLIC_BIND (info, h))
2619 || h->root.type == bfd_link_hash_defweak
2620 || !h->def_regular))))
233cc9c1
L		 2621 || (h != NULL
2622 && h->type == STT_GNU_IFUNC
2623 && r_type == htab->pointer_r_type
2624 && (sec->flags & SEC_CODE) == 0)
081b1afe
L		 2625 || (ELIMINATE_COPY_RELOCS
2626 && !bfd_link_pic (info)
2627 && h != NULL
2628 && (h->root.type == bfd_link_hash_defweak
2629 || !h->def_regular)))
70256ad8 2630 {
e03a8ed8
L		 2631 struct elf_dyn_relocs *p;
2632 struct elf_dyn_relocs **head;
c434dee6
AJ		 2633
2634 /* We must copy these reloc types into the output file.
2635 Create a reloc section in dynobj and make room for
2636 this reloc. */
70256ad8
AJ		 2637 if (sreloc == NULL)
2638 {
83bac4b0 2639 sreloc = _bfd_elf_make_dynamic_reloc_section
82e96e07
L		 2640 (sec, htab->elf.dynobj, ABI_64_P (abfd) ? 3 : 2,
2641 abfd, /*rela?*/ TRUE);
70256ad8 2642
70256ad8 2643 if (sreloc == NULL)
afd9acee 2644 goto error_return;
70256ad8
AJ		 2645 }
2646
c434dee6
AJ		 2647 /* If this is a global symbol, we count the number of
2648 relocations we need for this symbol. */
2649 if (h != NULL)
aec6b87e 2650 head = &eh->dyn_relocs;
c434dee6
AJ		 2651 else
2652 {
2653 /* Track dynamic relocs needed for local syms too.
2654 We really need local syms available to do this
2655 easily. Oh well. */
c434dee6 2656 asection *s;
87d72d41 2657 void **vpp;
87d72d41
AM		 2658
2659 isym = bfd_sym_from_r_symndx (&htab->sym_cache,
2660 abfd, r_symndx);
2661 if (isym == NULL)
afd9acee 2662 goto error_return;
87d72d41
AM		 2663
2664 s = bfd_section_from_elf_index (abfd, isym->st_shndx);
c434dee6 2665 if (s == NULL)
87d72d41 2666 s = sec;
70256ad8 2667
e81d3500
DD		 2668 /* Beware of type punned pointers vs strict aliasing
2669 rules. */
2670 vpp = &(elf_section_data (s)->local_dynrel);
e03a8ed8 2671 head = (struct elf_dyn_relocs **)vpp;
c434dee6 2672 }
70256ad8 2673
c434dee6
AJ		 2674 p = *head;
2675 if (p == NULL || p->sec != sec)
2676 {
2677 bfd_size_type amt = sizeof *p;
d8045f23 2678
e03a8ed8 2679 p = ((struct elf_dyn_relocs *)
c434dee6 2680 bfd_alloc (htab->elf.dynobj, amt));
70256ad8 2681 if (p == NULL)
afd9acee 2682 goto error_return;
c434dee6
AJ		 2683 p->next = *head;
2684 *head = p;
2685 p->sec = sec;
2686 p->count = 0;
2687 p->pc_count = 0;
70256ad8 2688 }
c434dee6
AJ		 2689
2690 p->count += 1;
06a6a421
L		 2691 /* Count size relocation as PC-relative relocation. */
2692 if (IS_X86_64_PCREL_TYPE (r_type) || size_reloc)
c434dee6 2693 p->pc_count += 1;
70256ad8
AJ		 2694 }
2695 break;
fe4770f4
AJ		 2696
2697 /* This relocation describes the C++ object vtable hierarchy.
2698 Reconstruct it for later use during GC. */
2699 case R_X86_64_GNU_VTINHERIT:
c152c796 2700 if (!bfd_elf_gc_record_vtinherit (abfd, sec, h, rel->r_offset))
afd9acee 2701 goto error_return;
fe4770f4
AJ		 2702 break;
2703
2704 /* This relocation describes which C++ vtable entries are actually
2705 used. Record for later use during GC. */
2706 case R_X86_64_GNU_VTENTRY:
d17e0c6e
JB		 2707 BFD_ASSERT (h != NULL);
2708 if (h != NULL
2709 && !bfd_elf_gc_record_vtentry (abfd, sec, h, rel->r_addend))
afd9acee 2710 goto error_return;
fe4770f4 2711 break;
c434dee6
AJ		 2712
2713 default:
2714 break;
70256ad8 2715 }
dd7e64d4 2716
56ceb5b5
L		 2717 if ((r_type == R_X86_64_GOTPCREL
2718 || r_type == R_X86_64_GOTPCRELX
2719 || r_type == R_X86_64_REX_GOTPCRELX)
c1d11331 2720 && (h == NULL || h->type != STT_GNU_IFUNC))
56ceb5b5 2721 sec->need_convert_load = 1;
70256ad8
AJ		 2722 }
2723
bedfd056
L		 2724 if (elf_section_data (sec)->this_hdr.contents != contents)
2725 {
2726 if (!info->keep_memory)
2727 free (contents);
2728 else
2729 {
2730 /* Cache the section contents for elf_link_input_bfd. */
2731 elf_section_data (sec)->this_hdr.contents = contents;
2732 }
2733 }
2734
b34976b6 2735 return TRUE;
afd9acee
L		 2736
2737error_return:
bedfd056
L		 2738 if (elf_section_data (sec)->this_hdr.contents != contents)
2739 free (contents);
afd9acee
L		 2740 sec->check_relocs_failed = 1;
2741 return FALSE;
70256ad8
AJ		 2742}
2743
2744/* Return the section that should be marked against GC for a given
407443a3 2745 relocation. */
70256ad8
AJ		 2746
2747static asection *
351f65ca
L		 2748elf_x86_64_gc_mark_hook (asection *sec,
2749 struct bfd_link_info *info,
2750 Elf_Internal_Rela *rel,
2751 struct elf_link_hash_entry *h,
2752 Elf_Internal_Sym *sym)
70256ad8
AJ		 2753{
2754 if (h != NULL)
351f65ca 2755 switch (ELF32_R_TYPE (rel->r_info))
07adf181
AM		 2756 {
2757 case R_X86_64_GNU_VTINHERIT:
2758 case R_X86_64_GNU_VTENTRY:
2759 return NULL;
2760 }
2761
2762 return _bfd_elf_gc_mark_hook (sec, info, rel, h, sym);
70256ad8
AJ		 2763}
2764
aec6b87e
L		 2765/* Remove undefined weak symbol from the dynamic symbol table if it
2766 is resolved to 0. */
2767
2768static bfd_boolean
2769elf_x86_64_fixup_symbol (struct bfd_link_info *info,
2770 struct elf_link_hash_entry *h)
2771{
2772 if (h->dynindx != -1
2773 && UNDEFINED_WEAK_RESOLVED_TO_ZERO (info,
e62b9723 2774 elf_x86_64_hash_entry (h)->has_got_reloc,
aec6b87e
L		 2775 elf_x86_64_hash_entry (h)))
2776 {
2777 h->dynindx = -1;
2778 _bfd_elf_strtab_delref (elf_hash_table (info)->dynstr,
2779 h->dynstr_index);
2780 }
2781 return TRUE;
2782}
2783
70256ad8
AJ		 2784/* Adjust a symbol defined by a dynamic object and referenced by a
2785 regular object. The current definition is in some section of the
2786 dynamic object, but we're not including those sections. We have to
2787 change the definition to something the rest of the link can
407443a3 2788 understand. */
70256ad8 2789
b34976b6 2790static bfd_boolean
351f65ca
L		 2791elf_x86_64_adjust_dynamic_symbol (struct bfd_link_info *info,
2792 struct elf_link_hash_entry *h)
70256ad8 2793{
351f65ca 2794 struct elf_x86_64_link_hash_table *htab;
5474d94f 2795 asection *s, *srel;
5ca5bb35
L		 2796 struct elf_x86_64_link_hash_entry *eh;
2797 struct elf_dyn_relocs *p;
70256ad8 2798
cbe950e9
L		 2799 /* STT_GNU_IFUNC symbol must go through PLT. */
2800 if (h->type == STT_GNU_IFUNC)
2801 {
73bcf233
L		 2802 /* All local STT_GNU_IFUNC references must be treate as local
2803 calls via local PLT. */
5ca5bb35
L		 2804 if (h->ref_regular
2805 && SYMBOL_CALLS_LOCAL (info, h))
2806 {
73bcf233 2807 bfd_size_type pc_count = 0, count = 0;
5ca5bb35
L		 2808 struct elf_dyn_relocs **pp;
2809
2810 eh = (struct elf_x86_64_link_hash_entry *) h;
2811 for (pp = &eh->dyn_relocs; (p = *pp) != NULL; )
2812 {
2813 pc_count += p->pc_count;
2814 p->count -= p->pc_count;
2815 p->pc_count = 0;
73bcf233 2816 count += p->count;
5ca5bb35
L		 2817 if (p->count == 0)
2818 *pp = p->next;
2819 else
2820 pp = &p->next;
2821 }
2822
73bcf233 2823 if (pc_count || count)
5ca5bb35 2824 {
5ca5bb35 2825 h->non_got_ref = 1;
233cc9c1
L		 2826 if (pc_count)
2827 {
2828 /* Increment PLT reference count only for PC-relative
2829 references. */
2830 h->needs_plt = 1;
2831 if (h->plt.refcount <= 0)
2832 h->plt.refcount = 1;
2833 else
2834 h->plt.refcount += 1;
2835 }
5ca5bb35
L		 2836 }
2837 }
2838
cbe950e9
L		 2839 if (h->plt.refcount <= 0)
2840 {
2841 h->plt.offset = (bfd_vma) -1;
2842 h->needs_plt = 0;
2843 }
2844 return TRUE;
2845 }
2846
70256ad8
AJ		 2847 /* If this is a function, put it in the procedure linkage table. We
2848 will fill in the contents of the procedure linkage table later,
2849 when we know the address of the .got section. */
2850 if (h->type == STT_FUNC
f5385ebf 2851 || h->needs_plt)
70256ad8 2852 {
c434dee6 2853 if (h->plt.refcount <= 0
27482721
AJ		 2854 || SYMBOL_CALLS_LOCAL (info, h)
2855 || (ELF_ST_VISIBILITY (h->other) != STV_DEFAULT
2856 && h->root.type == bfd_link_hash_undefweak))
70256ad8 2857 {
70256ad8
AJ		 2858 /* This case can occur if we saw a PLT32 reloc in an input
2859 file, but the symbol was never referred to by a dynamic
2860 object, or if all references were garbage collected. In
2861 such a case, we don't actually need to build a procedure
2862 linkage table, and we can just do a PC32 reloc instead. */
70256ad8 2863 h->plt.offset = (bfd_vma) -1;
f5385ebf 2864 h->needs_plt = 0;
70256ad8
AJ		 2865 }
2866
b34976b6 2867 return TRUE;
70256ad8 2868 }
bbd7ec4a 2869 else
c434dee6
AJ		 2870 /* It's possible that we incorrectly decided a .plt reloc was
2871 needed for an R_X86_64_PC32 reloc to a non-function sym in
2872 check_relocs. We can't decide accurately between function and
2873 non-function syms in check-relocs; Objects loaded later in
2874 the link may change h->type. So fix it now. */
bbd7ec4a 2875 h->plt.offset = (bfd_vma) -1;
70256ad8
AJ		 2876
2877 /* If this is a weak symbol, and there is a real definition, the
2878 processor independent code will have arranged for us to see the
407443a3 2879 real definition first, and we can just use the same value. */
f6e332e6 2880 if (h->u.weakdef != NULL)
70256ad8 2881 {
f6e332e6
AM		 2882 BFD_ASSERT (h->u.weakdef->root.type == bfd_link_hash_defined
2883 || h->u.weakdef->root.type == bfd_link_hash_defweak);
2884 h->root.u.def.section = h->u.weakdef->root.u.def.section;
2885 h->root.u.def.value = h->u.weakdef->root.u.def.value;
d40d037c 2886 if (ELIMINATE_COPY_RELOCS || info->nocopyreloc)
bc696fd5
L		 2887 {
2888 eh = (struct elf_x86_64_link_hash_entry *) h;
2889 h->non_got_ref = h->u.weakdef->non_got_ref;
2890 eh->needs_copy = h->u.weakdef->needs_copy;
2891 }
b34976b6 2892 return TRUE;
70256ad8
AJ		 2893 }
2894
2895 /* This is a reference to a symbol defined by a dynamic object which
407443a3 2896 is not a function. */
70256ad8
AJ		 2897
2898 /* If we are creating a shared library, we must presume that the
2899 only references to the symbol are via the global offset table.
2900 For such cases we need not do anything here; the relocations will
407443a3 2901 be handled correctly by relocate_section. */
0e1862bb 2902 if (!bfd_link_executable (info))
b34976b6 2903 return TRUE;
70256ad8
AJ		 2904
2905 /* If there are no references to this symbol that do not use the
2906 GOT, we don't need to generate a copy reloc. */
f5385ebf 2907 if (!h->non_got_ref)
b34976b6 2908 return TRUE;
70256ad8 2909
c434dee6
AJ		 2910 /* If -z nocopyreloc was given, we won't generate them either. */
2911 if (info->nocopyreloc)
2912 {
f5385ebf 2913 h->non_got_ref = 0;
b34976b6 2914 return TRUE;
c434dee6
AJ		 2915 }
2916
31c0ebfe 2917 if (ELIMINATE_COPY_RELOCS)
c434dee6 2918 {
351f65ca 2919 eh = (struct elf_x86_64_link_hash_entry *) h;
d40d037c
AJ		 2920 for (p = eh->dyn_relocs; p != NULL; p = p->next)
2921 {
2922 s = p->sec->output_section;
2923 if (s != NULL && (s->flags & SEC_READONLY) != 0)
2924 break;
2925 }
2926
2927 /* If we didn't find any dynamic relocs in read-only sections, then
2928 we'll be keeping the dynamic relocs and avoiding the copy reloc. */
2929 if (p == NULL)
2930 {
f5385ebf 2931 h->non_got_ref = 0;
d40d037c
AJ		 2932 return TRUE;
2933 }
c434dee6
AJ		 2934 }
2935
70256ad8 2936 /* We must allocate the symbol in our .dynbss section, which will
407443a3 2937 become part of the .bss section of the executable. There will be
70256ad8
AJ		 2938 an entry for this symbol in the .dynsym section. The dynamic
2939 object will contain position independent code, so all references
2940 from the dynamic object to this symbol will go through the global
2941 offset table. The dynamic linker will use the .dynsym entry to
2942 determine the address it must put in the global offset table, so
2943 both the dynamic object and the regular object will refer to the
2944 same memory location for the variable. */
2945
351f65ca 2946 htab = elf_x86_64_hash_table (info);
4dfe6ac6
NC		 2947 if (htab == NULL)
2948 return FALSE;
70256ad8
AJ		 2949
2950 /* We must generate a R_X86_64_COPY reloc to tell the dynamic linker
2951 to copy the initial value out of the dynamic object and into the
cedb70c5 2952 runtime process image. */
5474d94f
AM		 2953 if ((h->root.u.def.section->flags & SEC_READONLY) != 0)
2954 {
2955 s = htab->elf.sdynrelro;
2956 srel = htab->elf.sreldynrelro;
2957 }
2958 else
2959 {
2960 s = htab->elf.sdynbss;
2961 srel = htab->elf.srelbss;
2962 }
1d7e9d18 2963 if ((h->root.u.def.section->flags & SEC_ALLOC) != 0 && h->size != 0)
70256ad8 2964 {
351f65ca
L		 2965 const struct elf_backend_data *bed;
2966 bed = get_elf_backend_data (info->output_bfd);
5474d94f 2967 srel->size += bed->s->sizeof_rela;
f5385ebf 2968 h->needs_copy = 1;
70256ad8
AJ		 2969 }
2970
6cabe1ea 2971 return _bfd_elf_adjust_dynamic_copy (info, h, s);
70256ad8
AJ		 2972}
2973
c434dee6
AJ		 2974/* Allocate space in .plt, .got and associated reloc sections for
2975 dynamic relocs. */
2976
b34976b6 2977static bfd_boolean
351f65ca 2978elf_x86_64_allocate_dynrelocs (struct elf_link_hash_entry *h, void * inf)
c434dee6
AJ		 2979{
2980 struct bfd_link_info *info;
351f65ca
L		 2981 struct elf_x86_64_link_hash_table *htab;
2982 struct elf_x86_64_link_hash_entry *eh;
e03a8ed8 2983 struct elf_dyn_relocs *p;
351f65ca 2984 const struct elf_backend_data *bed;
eed180f8 2985 unsigned int plt_entry_size;
aec6b87e 2986 bfd_boolean resolved_to_zero;
c434dee6 2987
e92d460e 2988 if (h->root.type == bfd_link_hash_indirect)
b34976b6 2989 return TRUE;
c434dee6 2990
351f65ca 2991 eh = (struct elf_x86_64_link_hash_entry *) h;
e92d460e 2992
c434dee6 2993 info = (struct bfd_link_info *) inf;
351f65ca 2994 htab = elf_x86_64_hash_table (info);
4dfe6ac6
NC		 2995 if (htab == NULL)
2996 return FALSE;
351f65ca 2997 bed = get_elf_backend_data (info->output_bfd);
38b12349 2998 plt_entry_size = htab->plt.plt_entry_size;
c434dee6 2999
e62b9723
L		 3000 resolved_to_zero = UNDEFINED_WEAK_RESOLVED_TO_ZERO (info,
3001 eh->has_got_reloc,
3002 eh);
aec6b87e 3003
dd7e64d4
L		 3004 /* We can't use the GOT PLT if pointer equality is needed since
3005 finish_dynamic_symbol won't clear symbol value and the dynamic
3006 linker won't update the GOT slot. We will get into an infinite
3007 loop at run-time. */
3008 if (htab->plt_got != NULL
3009 && h->type != STT_GNU_IFUNC
3010 && !h->pointer_equality_needed
3011 && h->plt.refcount > 0
3012 && h->got.refcount > 0)
3013 {
3014 /* Don't use the regular PLT if there are both GOT and GOTPLT
3015 reloctions. */
3016 h->plt.offset = (bfd_vma) -1;
3017
3018 /* Use the GOT PLT. */
3019 eh->plt_got.refcount = 1;
3020 }
3021
04ebc307
L		 3022 /* Clear the reference count of function pointer relocations if
3023 symbol isn't a normal function. */
3024 if (h->type != STT_FUNC)
3025 eh->func_pointer_refcount = 0;
3026
cbe950e9
L		 3027 /* Since STT_GNU_IFUNC symbol must go through PLT, we handle it
3028 here if it is defined and referenced in a non-shared object. */
3029 if (h->type == STT_GNU_IFUNC
3030 && h->def_regular)
0ff2b86e
L		 3031 {
3032 if (_bfd_elf_allocate_ifunc_dyn_relocs (info, h,
3033 &eh->dyn_relocs,
2df3368d 3034 &htab->readonly_dynrelocs_against_ifunc,
0ff2b86e 3035 plt_entry_size,
38b12349
L		 3036 (htab->plt.has_plt0
3037 * plt_entry_size),
233cc9c1 3038 GOT_ENTRY_SIZE, TRUE))
0ff2b86e 3039 {
f2c29a16 3040 asection *s = htab->plt_second;
0ff2b86e
L		 3041 if (h->plt.offset != (bfd_vma) -1 && s != NULL)
3042 {
f2c29a16
L		 3043 /* Use the second PLT section if it is created. */
3044 eh->plt_second.offset = s->size;
0ff2b86e 3045
f2c29a16 3046 /* Make room for this entry in the second PLT section. */
38b12349 3047 s->size += htab->non_lazy_plt->plt_entry_size;
0ff2b86e
L		 3048 }
3049
3050 return TRUE;
3051 }
3052 else
3053 return FALSE;
3054 }
04ebc307
L		 3055 /* Don't create the PLT entry if there are only function pointer
3056 relocations which can be resolved at run-time. */
cbe950e9 3057 else if (htab->elf.dynamic_sections_created
04ebc307
L		 3058 && (h->plt.refcount > eh->func_pointer_refcount
3059 || eh->plt_got.refcount > 0))
c434dee6 3060 {
dc2be3d2 3061 bfd_boolean use_plt_got = eh->plt_got.refcount > 0;
25070364 3062
04ebc307
L		 3063 /* Clear the reference count of function pointer relocations
3064 if PLT is used. */
3065 eh->func_pointer_refcount = 0;
3066
c434dee6
AJ		 3067 /* Make sure this symbol is output as a dynamic symbol.
3068 Undefined weak syms won't yet be marked as dynamic. */
3069 if (h->dynindx == -1
aec6b87e 3070 && !h->forced_local
9e9821dd
L		 3071 && !resolved_to_zero
3072 && h->root.type == bfd_link_hash_undefweak)
c434dee6 3073 {
c152c796 3074 if (! bfd_elf_link_record_dynamic_symbol (info, h))
b34976b6 3075 return FALSE;
c434dee6
AJ		 3076 }
3077
0e1862bb 3078 if (bfd_link_pic (info)
27482721 3079 || WILL_CALL_FINISH_DYNAMIC_SYMBOL (1, 0, h))
c434dee6 3080 {
6de2ae4a 3081 asection *s = htab->elf.splt;
f2c29a16 3082 asection *second_s = htab->plt_second;
dd7e64d4 3083 asection *got_s = htab->plt_got;
c434dee6 3084
7c1e8d3e
L		 3085 /* If this is the first .plt entry, make room for the special
3086 first entry. The .plt section is used by prelink to undo
3087 prelinking for dynamic relocations. */
3088 if (s->size == 0)
38b12349 3089 s->size = htab->plt.has_plt0 * plt_entry_size;
7c1e8d3e 3090
dd7e64d4
L		 3091 if (use_plt_got)
3092 eh->plt_got.offset = got_s->size;
3093 else
3094 {
3095 h->plt.offset = s->size;
f2c29a16
L		 3096 if (second_s)
3097 eh->plt_second.offset = second_s->size;
dd7e64d4 3098 }
c434dee6
AJ		 3099
3100 /* If this symbol is not defined in a regular file, and we are
3101 not generating a shared library, then set the symbol to this
3102 location in the .plt. This is required to make function
3103 pointers compare as equal between the normal executable and
3104 the shared library. */
0e1862bb 3105 if (! bfd_link_pic (info)
f5385ebf 3106 && !h->def_regular)
c434dee6 3107 {
dd7e64d4 3108 if (use_plt_got)
0ff2b86e 3109 {
dd7e64d4
L		 3110 /* We need to make a call to the entry of the GOT PLT
3111 instead of regular PLT entry. */
3112 h->root.u.def.section = got_s;
3113 h->root.u.def.value = eh->plt_got.offset;
0ff2b86e
L		 3114 }
3115 else
3116 {
f2c29a16 3117 if (second_s)
dd7e64d4 3118 {
f2c29a16
L		 3119 /* We need to make a call to the entry of the
3120 second PLT instead of regular PLT entry. */
3121 h->root.u.def.section = second_s;
3122 h->root.u.def.value = eh->plt_second.offset;
dd7e64d4
L		 3123 }
3124 else
3125 {
3126 h->root.u.def.section = s;
3127 h->root.u.def.value = h->plt.offset;
3128 }
0ff2b86e 3129 }
c434dee6
AJ		 3130 }
3131
3132 /* Make room for this entry. */
dd7e64d4 3133 if (use_plt_got)
38b12349 3134 got_s->size += htab->non_lazy_plt->plt_entry_size;
dd7e64d4
L		 3135 else
3136 {
3137 s->size += plt_entry_size;
f2c29a16
L		 3138 if (second_s)
3139 second_s->size += htab->non_lazy_plt->plt_entry_size;
c434dee6 3140
dd7e64d4
L		 3141 /* We also need to make an entry in the .got.plt section,
3142 which will be placed in the .got section by the linker
3143 script. */
3144 htab->elf.sgotplt->size += GOT_ENTRY_SIZE;
c434dee6 3145
aec6b87e
L		 3146 /* There should be no PLT relocation against resolved
3147 undefined weak symbol in executable. */
3148 if (!resolved_to_zero)
3149 {
3150 /* We also need to make an entry in the .rela.plt
3151 section. */
3152 htab->elf.srelplt->size += bed->s->sizeof_rela;
3153 htab->elf.srelplt->reloc_count++;
3154 }
dd7e64d4 3155 }
c434dee6
AJ		 3156 }
3157 else
3158 {
13f42277 3159 eh->plt_got.offset = (bfd_vma) -1;
c434dee6 3160 h->plt.offset = (bfd_vma) -1;
f5385ebf 3161 h->needs_plt = 0;
c434dee6
AJ		 3162 }
3163 }
3164 else
3165 {
13f42277 3166 eh->plt_got.offset = (bfd_vma) -1;
c434dee6 3167 h->plt.offset = (bfd_vma) -1;
f5385ebf 3168 h->needs_plt = 0;
c434dee6
AJ		 3169 }
3170
67a4f2b7
AO		 3171 eh->tlsdesc_got = (bfd_vma) -1;
3172
bffbf940
JJ		 3173 /* If R_X86_64_GOTTPOFF symbol is now local to the binary,
3174 make it a R_X86_64_TPOFF32 requiring no GOT entry. */
3175 if (h->got.refcount > 0
0e1862bb 3176 && bfd_link_executable (info)
bffbf940 3177 && h->dynindx == -1
351f65ca 3178 && elf_x86_64_hash_entry (h)->tls_type == GOT_TLS_IE)
d8045f23
NC		 3179 {
3180 h->got.offset = (bfd_vma) -1;
3181 }
bffbf940 3182 else if (h->got.refcount > 0)
c434dee6
AJ		 3183 {
3184 asection *s;
b34976b6 3185 bfd_boolean dyn;
351f65ca 3186 int tls_type = elf_x86_64_hash_entry (h)->tls_type;
c434dee6
AJ		 3187
3188 /* Make sure this symbol is output as a dynamic symbol.
3189 Undefined weak syms won't yet be marked as dynamic. */
3190 if (h->dynindx == -1
aec6b87e 3191 && !h->forced_local
9e9821dd
L		 3192 && !resolved_to_zero
3193 && h->root.type == bfd_link_hash_undefweak)
c434dee6 3194 {
c152c796 3195 if (! bfd_elf_link_record_dynamic_symbol (info, h))
b34976b6 3196 return FALSE;
c434dee6
AJ		 3197 }
3198
67a4f2b7
AO		 3199 if (GOT_TLS_GDESC_P (tls_type))
3200 {
6de2ae4a 3201 eh->tlsdesc_got = htab->elf.sgotplt->size
351f65ca 3202 - elf_x86_64_compute_jump_table_size (htab);
6de2ae4a 3203 htab->elf.sgotplt->size += 2 * GOT_ENTRY_SIZE;
67a4f2b7
AO		 3204 h->got.offset = (bfd_vma) -2;
3205 }
3206 if (! GOT_TLS_GDESC_P (tls_type)
3207 || GOT_TLS_GD_P (tls_type))
3208 {
6de2ae4a 3209 s = htab->elf.sgot;
67a4f2b7
AO		 3210 h->got.offset = s->size;
3211 s->size += GOT_ENTRY_SIZE;
3212 if (GOT_TLS_GD_P (tls_type))
3213 s->size += GOT_ENTRY_SIZE;
3214 }
c434dee6 3215 dyn = htab->elf.dynamic_sections_created;
bffbf940 3216 /* R_X86_64_TLSGD needs one dynamic relocation if local symbol
aec6b87e
L		 3217 and two if global. R_X86_64_GOTTPOFF needs one dynamic
3218 relocation. No dynamic relocation against resolved undefined
3219 weak symbol in executable. */
67a4f2b7 3220 if ((GOT_TLS_GD_P (tls_type) && h->dynindx == -1)
bffbf940 3221 || tls_type == GOT_TLS_IE)
351f65ca 3222 htab->elf.srelgot->size += bed->s->sizeof_rela;
67a4f2b7 3223 else if (GOT_TLS_GD_P (tls_type))
351f65ca 3224 htab->elf.srelgot->size += 2 * bed->s->sizeof_rela;
67a4f2b7 3225 else if (! GOT_TLS_GDESC_P (tls_type)
aec6b87e
L		 3226 && ((ELF_ST_VISIBILITY (h->other) == STV_DEFAULT
3227 && !resolved_to_zero)
67a4f2b7 3228 || h->root.type != bfd_link_hash_undefweak)
0e1862bb 3229 && (bfd_link_pic (info)
27482721 3230 || WILL_CALL_FINISH_DYNAMIC_SYMBOL (dyn, 0, h)))
351f65ca 3231 htab->elf.srelgot->size += bed->s->sizeof_rela;
67a4f2b7
AO		 3232 if (GOT_TLS_GDESC_P (tls_type))
3233 {
351f65ca 3234 htab->elf.srelplt->size += bed->s->sizeof_rela;
67a4f2b7
AO		 3235 htab->tlsdesc_plt = (bfd_vma) -1;
3236 }
c434dee6
AJ		 3237 }
3238 else
3239 h->got.offset = (bfd_vma) -1;
3240
c434dee6 3241 if (eh->dyn_relocs == NULL)
b34976b6 3242 return TRUE;
c434dee6
AJ		 3243
3244 /* In the shared -Bsymbolic case, discard space allocated for
3245 dynamic pc-relative relocs against symbols which turn out to be
3246 defined in regular objects. For the normal shared case, discard
3247 space for pc-relative relocs that have become local due to symbol
3248 visibility changes. */
3249
0e1862bb 3250 if (bfd_link_pic (info))
c434dee6 3251 {
27482721
AJ		 3252 /* Relocs that use pc_count are those that appear on a call
3253 insn, or certain REL relocs that can generated via assembly.
3254 We want calls to protected symbols to resolve directly to the
3255 function rather than going via the plt. If people want
3256 function pointer comparisons to work as expected then they
3257 should avoid writing weird assembly. */
3258 if (SYMBOL_CALLS_LOCAL (info, h))
c434dee6 3259 {
e03a8ed8 3260 struct elf_dyn_relocs **pp;
c434dee6
AJ		 3261
3262 for (pp = &eh->dyn_relocs; (p = *pp) != NULL; )
3263 {
c3ce498c
L		 3264 p->count -= p->pc_count;
3265 p->pc_count = 0;
c434dee6
AJ		 3266 if (p->count == 0)
3267 *pp = p->next;
3268 else
3269 pp = &p->next;
3270 }
3271 }
4e795f50
AM		 3272
3273 /* Also discard relocs on undefined weak syms with non-default
aec6b87e 3274 visibility or in PIE. */
31c0ebfe 3275 if (eh->dyn_relocs != NULL)
22d606e9 3276 {
31c0ebfe
L		 3277 if (h->root.type == bfd_link_hash_undefweak)
3278 {
aec6b87e
L		 3279 /* Undefined weak symbol is never bound locally in shared
3280 library. */
3281 if (ELF_ST_VISIBILITY (h->other) != STV_DEFAULT
3282 || resolved_to_zero)
31c0ebfe 3283 eh->dyn_relocs = NULL;
31c0ebfe
L		 3284 else if (h->dynindx == -1
3285 && ! h->forced_local
3286 && ! bfd_elf_link_record_dynamic_symbol (info, h))
3287 return FALSE;
3288 }
9d1d54d5
L		 3289 /* For PIE, discard space for pc-relative relocs against
3290 symbols which turn out to need copy relocs. */
0e1862bb 3291 else if (bfd_link_executable (info)
bc696fd5 3292 && (h->needs_copy || eh->needs_copy)
31c0ebfe
L		 3293 && h->def_dynamic
3294 && !h->def_regular)
9d1d54d5
L		 3295 {
3296 struct elf_dyn_relocs **pp;
3297
3298 for (pp = &eh->dyn_relocs; (p = *pp) != NULL; )
3299 {
3300 if (p->pc_count != 0)
3301 *pp = p->next;
3302 else
3303 pp = &p->next;
3304 }
3305 }
22d606e9 3306 }
d8045f23 3307 }
d40d037c 3308 else if (ELIMINATE_COPY_RELOCS)
c434dee6
AJ		 3309 {
3310 /* For the non-shared case, discard space for relocs against
3311 symbols which turn out to need copy relocs or are not
04ebc307
L		 3312 dynamic. Keep dynamic relocations for run-time function
3313 pointer initialization. */
c434dee6 3314
aec6b87e
L		 3315 if ((!h->non_got_ref
3316 || eh->func_pointer_refcount > 0
3317 || (h->root.type == bfd_link_hash_undefweak
3318 && !resolved_to_zero))
f5385ebf
AM		 3319 && ((h->def_dynamic
3320 && !h->def_regular)
c434dee6
AJ		 3321 || (htab->elf.dynamic_sections_created
3322 && (h->root.type == bfd_link_hash_undefweak
3323 || h->root.type == bfd_link_hash_undefined))))
3324 {
3325 /* Make sure this symbol is output as a dynamic symbol.
3326 Undefined weak syms won't yet be marked as dynamic. */
3327 if (h->dynindx == -1
d8045f23 3328 && ! h->forced_local
aec6b87e 3329 && ! resolved_to_zero
9e9821dd 3330 && h->root.type == bfd_link_hash_undefweak
d8045f23
NC		 3331 && ! bfd_elf_link_record_dynamic_symbol (info, h))
3332 return FALSE;
c434dee6
AJ		 3333
3334 /* If that succeeded, we know we'll be keeping all the
3335 relocs. */
3336 if (h->dynindx != -1)
3337 goto keep;
3338 }
3339
3340 eh->dyn_relocs = NULL;
04ebc307 3341 eh->func_pointer_refcount = 0;
c434dee6
AJ		 3342
3343 keep: ;
3344 }
3345
3346 /* Finally, allocate space. */
3347 for (p = eh->dyn_relocs; p != NULL; p = p->next)
3348 {
e7c33416
NC		 3349 asection * sreloc;
3350
cbe950e9 3351 sreloc = elf_section_data (p->sec)->sreloc;
e7c33416
NC		 3352
3353 BFD_ASSERT (sreloc != NULL);
3354
351f65ca 3355 sreloc->size += p->count * bed->s->sizeof_rela;
c434dee6
AJ		 3356 }
3357
b34976b6 3358 return TRUE;
c434dee6
AJ		 3359}
3360
c25bc9fc
L		 3361/* Allocate space in .plt, .got and associated reloc sections for
3362 local dynamic relocs. */
3363
3364static bfd_boolean
351f65ca 3365elf_x86_64_allocate_local_dynrelocs (void **slot, void *inf)
c25bc9fc
L		 3366{
3367 struct elf_link_hash_entry *h
3368 = (struct elf_link_hash_entry *) *slot;
3369
3370 if (h->type != STT_GNU_IFUNC
3371 || !h->def_regular
3372 || !h->ref_regular
3373 || !h->forced_local
3374 || h->root.type != bfd_link_hash_defined)
3375 abort ();
3376
351f65ca 3377 return elf_x86_64_allocate_dynrelocs (h, inf);
c25bc9fc
L		 3378}
3379
c434dee6
AJ		 3380/* Find any dynamic relocs that apply to read-only sections. */
3381
b34976b6 3382static bfd_boolean
351f65ca
L		 3383elf_x86_64_readonly_dynrelocs (struct elf_link_hash_entry *h,
3384 void * inf)
c434dee6 3385{
351f65ca 3386 struct elf_x86_64_link_hash_entry *eh;
e03a8ed8 3387 struct elf_dyn_relocs *p;
c434dee6 3388
aa715242
L		 3389 /* Skip local IFUNC symbols. */
3390 if (h->forced_local && h->type == STT_GNU_IFUNC)
3391 return TRUE;
3392
351f65ca 3393 eh = (struct elf_x86_64_link_hash_entry *) h;
c434dee6
AJ		 3394 for (p = eh->dyn_relocs; p != NULL; p = p->next)
3395 {
3396 asection *s = p->sec->output_section;
3397
3398 if (s != NULL && (s->flags & SEC_READONLY) != 0)
3399 {
3400 struct bfd_link_info *info = (struct bfd_link_info *) inf;
3401
3402 info->flags |= DF_TEXTREL;
3403
0e1862bb 3404 if ((info->warn_shared_textrel && bfd_link_pic (info))
1952c5cd 3405 || info->error_textrel)
695344c0 3406 /* xgettext:c-format */
1952c5cd 3407 info->callbacks->einfo (_("%P: %B: warning: relocation against `%s' in readonly section `%A'\n"),
b70321a2
L		 3408 p->sec->owner, h->root.root.string,
3409 p->sec);
3410
c434dee6 3411 /* Not an error, just cut short the traversal. */
b34976b6 3412 return FALSE;
c434dee6
AJ		 3413 }
3414 }
b34976b6 3415 return TRUE;
c434dee6
AJ		 3416}
3417
c175a657 3418/* Convert load via the GOT slot to load immediate. */
daa67607
L		 3419
3420static bfd_boolean
56ceb5b5
L		 3421elf_x86_64_convert_load (bfd *abfd, asection *sec,
3422 struct bfd_link_info *link_info)
daa67607
L		 3423{
3424 Elf_Internal_Shdr *symtab_hdr;
3425 Elf_Internal_Rela *internal_relocs;
3426 Elf_Internal_Rela *irel, *irelend;
3427 bfd_byte *contents;
3428 struct elf_x86_64_link_hash_table *htab;
c175a657 3429 bfd_boolean changed;
daa67607
L		 3430 bfd_signed_vma *local_got_refcounts;
3431
3432 /* Don't even try to convert non-ELF outputs. */
3433 if (!is_elf_hash_table (link_info->hash))
3434 return FALSE;
3435
c1d11331 3436 /* Nothing to do if there is no need or no output. */
daa67607 3437 if ((sec->flags & (SEC_CODE | SEC_RELOC)) != (SEC_CODE | SEC_RELOC)
56ceb5b5 3438 || sec->need_convert_load == 0
c8831961 3439 || bfd_is_abs_section (sec->output_section))
daa67607
L		 3440 return TRUE;
3441
3442 symtab_hdr = &elf_tdata (abfd)->symtab_hdr;
3443
3444 /* Load the relocations for this section. */
3445 internal_relocs = (_bfd_elf_link_read_relocs
3446 (abfd, sec, NULL, (Elf_Internal_Rela *) NULL,
3447 link_info->keep_memory));
3448 if (internal_relocs == NULL)
3449 return FALSE;
3450
c175a657 3451 changed = FALSE;
daa67607 3452 htab = elf_x86_64_hash_table (link_info);
daa67607
L		 3453 local_got_refcounts = elf_local_got_refcounts (abfd);
3454
3455 /* Get the section contents. */
3456 if (elf_section_data (sec)->this_hdr.contents != NULL)
3457 contents = elf_section_data (sec)->this_hdr.contents;
3458 else
3459 {
3460 if (!bfd_malloc_and_get_section (abfd, sec, &contents))
3461 goto error_return;
3462 }
3463
3464 irelend = internal_relocs + sec->reloc_count;
3465 for (irel = internal_relocs; irel < irelend; irel++)
3466 {
3467 unsigned int r_type = ELF32_R_TYPE (irel->r_info);
c175a657 3468 unsigned int r_symndx;
daa67607 3469 struct elf_link_hash_entry *h;
c175a657 3470 bfd_boolean converted;
59cab532 3471
c175a657
L		 3472 if (r_type != R_X86_64_GOTPCRELX
3473 && r_type != R_X86_64_REX_GOTPCRELX
3474 && r_type != R_X86_64_GOTPCREL)
dfc87947
L		 3475 continue;
3476
c175a657 3477 r_symndx = htab->r_sym (irel->r_info);
daa67607 3478 if (r_symndx < symtab_hdr->sh_info)
c175a657
L		 3479 h = elf_x86_64_get_local_sym_hash (htab, sec->owner,
3480 (const Elf_Internal_Rela *) irel,
3481 FALSE);
59cab532
L		 3482 else
3483 {
c175a657 3484 h = elf_sym_hashes (abfd)[r_symndx - symtab_hdr->sh_info];
59cab532
L		 3485 while (h->root.type == bfd_link_hash_indirect
3486 || h->root.type == bfd_link_hash_warning)
3487 h = (struct elf_link_hash_entry *) h->root.u.i.link;
59cab532
L		 3488 }
3489
c175a657
L		 3490 /* STT_GNU_IFUNC must keep GOTPCREL relocations. */
3491 if (h != NULL && h->type == STT_GNU_IFUNC)
3492 continue;
daa67607 3493
c175a657
L		 3494 converted = FALSE;
3495 if (!elf_x86_64_convert_load_reloc (abfd, sec, contents, irel, h,
3496 &converted, link_info))
3497 goto error_return;
56ceb5b5 3498
c175a657 3499 if (converted)
56ceb5b5 3500 {
c175a657
L		 3501 changed = converted;
3502 if (h)
56ceb5b5 3503 {
c175a657
L		 3504 if (h->got.refcount > 0)
3505 h->got.refcount -= 1;
56ceb5b5
L		 3506 }
3507 else
3508 {
c175a657
L		 3509 if (local_got_refcounts != NULL
3510 && local_got_refcounts[r_symndx] > 0)
3511 local_got_refcounts[r_symndx] -= 1;
56ceb5b5 3512 }
daa67607
L		 3513 }
3514 }
3515
3516 if (contents != NULL
3517 && elf_section_data (sec)->this_hdr.contents != contents)
3518 {
c175a657 3519 if (!changed && !link_info->keep_memory)
daa67607
L		 3520 free (contents);
3521 else
3522 {
3523 /* Cache the section contents for elf_link_input_bfd. */
3524 elf_section_data (sec)->this_hdr.contents = contents;
3525 }
3526 }
3527
3528 if (elf_section_data (sec)->relocs != internal_relocs)
3529 {
c175a657 3530 if (!changed)
daa67607
L		 3531 free (internal_relocs);
3532 else
3533 elf_section_data (sec)->relocs = internal_relocs;
3534 }
3535
3536 return TRUE;
3537
3538 error_return:
3539 if (contents != NULL
3540 && elf_section_data (sec)->this_hdr.contents != contents)
3541 free (contents);
3542 if (internal_relocs != NULL
3543 && elf_section_data (sec)->relocs != internal_relocs)
3544 free (internal_relocs);
3545 return FALSE;
3546}
3547
70256ad8
AJ		 3548/* Set the sizes of the dynamic sections. */
3549
b34976b6 3550static bfd_boolean
351f65ca
L		 3551elf_x86_64_size_dynamic_sections (bfd *output_bfd,
3552 struct bfd_link_info *info)
70256ad8 3553{
351f65ca 3554 struct elf_x86_64_link_hash_table *htab;
70256ad8
AJ		 3555 bfd *dynobj;
3556 asection *s;
b34976b6 3557 bfd_boolean relocs;
c434dee6 3558 bfd *ibfd;
351f65ca 3559 const struct elf_backend_data *bed;
70256ad8 3560
351f65ca 3561 htab = elf_x86_64_hash_table (info);
4dfe6ac6
NC		 3562 if (htab == NULL)
3563 return FALSE;
351f65ca 3564 bed = get_elf_backend_data (output_bfd);
4dfe6ac6 3565
c434dee6
AJ		 3566 dynobj = htab->elf.dynobj;
3567 if (dynobj == NULL)
3568 abort ();
70256ad8 3569
c434dee6
AJ		 3570 /* Set up .got offsets for local syms, and space for local dynamic
3571 relocs. */
c72f2fb2 3572 for (ibfd = info->input_bfds; ibfd != NULL; ibfd = ibfd->link.next)
70256ad8 3573 {
c434dee6
AJ		 3574 bfd_signed_vma *local_got;
3575 bfd_signed_vma *end_local_got;
bffbf940 3576 char *local_tls_type;
67a4f2b7 3577 bfd_vma *local_tlsdesc_gotent;
c434dee6
AJ		 3578 bfd_size_type locsymcount;
3579 Elf_Internal_Shdr *symtab_hdr;
3580 asection *srel;
70256ad8 3581
0ffa91dd 3582 if (! is_x86_64_elf (ibfd))
70256ad8
AJ		 3583 continue;
3584
c434dee6 3585 for (s = ibfd->sections; s != NULL; s = s->next)
70256ad8 3586 {
e03a8ed8 3587 struct elf_dyn_relocs *p;
c434dee6 3588
56ceb5b5 3589 if (!elf_x86_64_convert_load (ibfd, s, info))
daa67607
L		 3590 return FALSE;
3591
e03a8ed8 3592 for (p = (struct elf_dyn_relocs *)
e81d3500 3593 (elf_section_data (s)->local_dynrel);
c434dee6
AJ		 3594 p != NULL;
3595 p = p->next)
70256ad8 3596 {
c434dee6
AJ		 3597 if (!bfd_is_abs_section (p->sec)
3598 && bfd_is_abs_section (p->sec->output_section))
3599 {
3600 /* Input section has been discarded, either because
3601 it is a copy of a linkonce section or due to
3602 linker script /DISCARD/, so we'll be discarding
3603 the relocs too. */
3604 }
3605 else if (p->count != 0)
3606 {
3607 srel = elf_section_data (p->sec)->sreloc;
351f65ca 3608 srel->size += p->count * bed->s->sizeof_rela;
4b819e1f
L		 3609 if ((p->sec->output_section->flags & SEC_READONLY) != 0
3610 && (info->flags & DF_TEXTREL) == 0)
b70321a2
L		 3611 {
3612 info->flags |= DF_TEXTREL;
0e1862bb 3613 if ((info->warn_shared_textrel && bfd_link_pic (info))
1952c5cd 3614 || info->error_textrel)
695344c0 3615 /* xgettext:c-format */
1952c5cd 3616 info->callbacks->einfo (_("%P: %B: warning: relocation in readonly section `%A'\n"),
b70321a2 3617 p->sec->owner, p->sec);
b70321a2 3618 }
c434dee6 3619 }
70256ad8
AJ		 3620 }
3621 }
c434dee6
AJ		 3622
3623 local_got = elf_local_got_refcounts (ibfd);
3624 if (!local_got)
3625 continue;
3626
0ffa91dd 3627 symtab_hdr = &elf_symtab_hdr (ibfd);
c434dee6
AJ		 3628 locsymcount = symtab_hdr->sh_info;
3629 end_local_got = local_got + locsymcount;
351f65ca
L		 3630 local_tls_type = elf_x86_64_local_got_tls_type (ibfd);
3631 local_tlsdesc_gotent = elf_x86_64_local_tlsdesc_gotent (ibfd);
6de2ae4a
L		 3632 s = htab->elf.sgot;
3633 srel = htab->elf.srelgot;
67a4f2b7
AO		 3634 for (; local_got < end_local_got;
3635 ++local_got, ++local_tls_type, ++local_tlsdesc_gotent)
70256ad8 3636 {
67a4f2b7 3637 *local_tlsdesc_gotent = (bfd_vma) -1;
c434dee6 3638 if (*local_got > 0)
70256ad8 3639 {
67a4f2b7
AO		 3640 if (GOT_TLS_GDESC_P (*local_tls_type))
3641 {
6de2ae4a 3642 *local_tlsdesc_gotent = htab->elf.sgotplt->size
351f65ca 3643 - elf_x86_64_compute_jump_table_size (htab);
6de2ae4a 3644 htab->elf.sgotplt->size += 2 * GOT_ENTRY_SIZE;
67a4f2b7
AO		 3645 *local_got = (bfd_vma) -2;
3646 }
3647 if (! GOT_TLS_GDESC_P (*local_tls_type)
3648 || GOT_TLS_GD_P (*local_tls_type))
3649 {
3650 *local_got = s->size;
3651 s->size += GOT_ENTRY_SIZE;
3652 if (GOT_TLS_GD_P (*local_tls_type))
3653 s->size += GOT_ENTRY_SIZE;
3654 }
0e1862bb 3655 if (bfd_link_pic (info)
67a4f2b7 3656 || GOT_TLS_GD_ANY_P (*local_tls_type)
bffbf940 3657 || *local_tls_type == GOT_TLS_IE)
67a4f2b7
AO		 3658 {
3659 if (GOT_TLS_GDESC_P (*local_tls_type))
3660 {
6de2ae4a 3661 htab->elf.srelplt->size
351f65ca 3662 += bed->s->sizeof_rela;
67a4f2b7
AO		 3663 htab->tlsdesc_plt = (bfd_vma) -1;
3664 }
3665 if (! GOT_TLS_GDESC_P (*local_tls_type)
3666 || GOT_TLS_GD_P (*local_tls_type))
351f65ca 3667 srel->size += bed->s->sizeof_rela;
67a4f2b7 3668 }
70256ad8
AJ		 3669 }
3670 else
c434dee6
AJ		 3671 *local_got = (bfd_vma) -1;
3672 }
3673 }
70256ad8 3674
bffbf940
JJ		 3675 if (htab->tls_ld_got.refcount > 0)
3676 {
3677 /* Allocate 2 got entries and 1 dynamic reloc for R_X86_64_TLSLD
3678 relocs. */
6de2ae4a
L		 3679 htab->tls_ld_got.offset = htab->elf.sgot->size;
3680 htab->elf.sgot->size += 2 * GOT_ENTRY_SIZE;
351f65ca 3681 htab->elf.srelgot->size += bed->s->sizeof_rela;
bffbf940
JJ		 3682 }
3683 else
3684 htab->tls_ld_got.offset = -1;
3685
c434dee6
AJ		 3686 /* Allocate global sym .plt and .got entries, and space for global
3687 sym dynamic relocs. */
351f65ca 3688 elf_link_hash_traverse (&htab->elf, elf_x86_64_allocate_dynrelocs,
eb4ff4d6 3689 info);
c434dee6 3690
c25bc9fc
L		 3691 /* Allocate .plt and .got entries, and space for local symbols. */
3692 htab_traverse (htab->loc_hash_table,
351f65ca 3693 elf_x86_64_allocate_local_dynrelocs,
c25bc9fc
L		 3694 info);
3695
67a4f2b7
AO		 3696 /* For every jump slot reserved in the sgotplt, reloc_count is
3697 incremented. However, when we reserve space for TLS descriptors,
3698 it's not incremented, so in order to compute the space reserved
3699 for them, it suffices to multiply the reloc count by the jump
e1f98742
L		 3700 slot size.
3701
3702 PR ld/13302: We start next_irelative_index at the end of .rela.plt
3703 so that R_X86_64_IRELATIVE entries come last. */
6de2ae4a 3704 if (htab->elf.srelplt)
e1f98742
L		 3705 {
3706 htab->sgotplt_jump_table_size
3707 = elf_x86_64_compute_jump_table_size (htab);
3708 htab->next_irelative_index = htab->elf.srelplt->reloc_count - 1;
3709 }
3710 else if (htab->elf.irelplt)
3711 htab->next_irelative_index = htab->elf.irelplt->reloc_count - 1;
67a4f2b7
AO		 3712
3713 if (htab->tlsdesc_plt)
3714 {
3715 /* If we're not using lazy TLS relocations, don't generate the
3716 PLT and GOT entries they require. */
3717 if ((info->flags & DF_BIND_NOW))
3718 htab->tlsdesc_plt = 0;
3719 else
3720 {
6de2ae4a
L		 3721 htab->tlsdesc_got = htab->elf.sgot->size;
3722 htab->elf.sgot->size += GOT_ENTRY_SIZE;
67a4f2b7
AO		 3723 /* Reserve room for the initial entry.
3724 FIXME: we could probably do away with it in this case. */
6de2ae4a 3725 if (htab->elf.splt->size == 0)
38b12349 3726 htab->elf.splt->size = htab->plt.plt_entry_size;
6de2ae4a 3727 htab->tlsdesc_plt = htab->elf.splt->size;
38b12349 3728 htab->elf.splt->size += htab->plt.plt_entry_size;
67a4f2b7
AO		 3729 }
3730 }
3731
a7b16ceb
L		 3732 if (htab->elf.sgotplt)
3733 {
3734 /* Don't allocate .got.plt section if there are no GOT nor PLT
eed180f8 3735 entries and there is no refeence to _GLOBAL_OFFSET_TABLE_. */
9d4b2dba
L		 3736 if ((htab->elf.hgot == NULL
3737 || !htab->elf.hgot->ref_regular_nonweak)
e28df02b
L		 3738 && (htab->elf.sgotplt->size
3739 == get_elf_backend_data (output_bfd)->got_header_size)
a7b16ceb
L		 3740 && (htab->elf.splt == NULL
3741 || htab->elf.splt->size == 0)
3742 && (htab->elf.sgot == NULL
3743 || htab->elf.sgot->size == 0)
3744 && (htab->elf.iplt == NULL
3745 || htab->elf.iplt->size == 0)
3746 && (htab->elf.igotplt == NULL
3747 || htab->elf.igotplt->size == 0))
3748 htab->elf.sgotplt->size = 0;
3749 }
3750
fff53dae 3751 if (_bfd_elf_eh_frame_present (info))
9a2a56cc 3752 {
fff53dae
L		 3753 if (htab->plt_eh_frame != NULL
3754 && htab->elf.splt != NULL
3755 && htab->elf.splt->size != 0
3756 && !bfd_is_abs_section (htab->elf.splt->output_section))
38b12349 3757 htab->plt_eh_frame->size = htab->plt.eh_frame_plt_size;
fff53dae
L		 3758
3759 if (htab->plt_got_eh_frame != NULL
3760 && htab->plt_got != NULL
3761 && htab->plt_got->size != 0
3762 && !bfd_is_abs_section (htab->plt_got->output_section))
38b12349
L		 3763 htab->plt_got_eh_frame->size
3764 = htab->non_lazy_plt->eh_frame_plt_size;
8361ed4d 3765
f2c29a16 3766 /* Unwind info for the second PLT and .plt.got sections are
8361ed4d 3767 identical. */
f2c29a16
L		 3768 if (htab->plt_second_eh_frame != NULL
3769 && htab->plt_second != NULL
3770 && htab->plt_second->size != 0
3771 && !bfd_is_abs_section (htab->plt_second->output_section))
3772 htab->plt_second_eh_frame->size
38b12349 3773 = htab->non_lazy_plt->eh_frame_plt_size;
9a2a56cc
AM		 3774 }
3775
c434dee6
AJ		 3776 /* We now have determined the sizes of the various dynamic sections.
3777 Allocate memory for them. */
b34976b6 3778 relocs = FALSE;
c434dee6
AJ		 3779 for (s = dynobj->sections; s != NULL; s = s->next)
3780 {
3781 if ((s->flags & SEC_LINKER_CREATED) == 0)
3782 continue;
3783
6de2ae4a
L		 3784 if (s == htab->elf.splt
3785 || s == htab->elf.sgot
3786 || s == htab->elf.sgotplt
3787 || s == htab->elf.iplt
3788 || s == htab->elf.igotplt
f2c29a16 3789 || s == htab->plt_second
dd7e64d4 3790 || s == htab->plt_got
9a2a56cc 3791 || s == htab->plt_eh_frame
fff53dae 3792 || s == htab->plt_got_eh_frame
f2c29a16 3793 || s == htab->plt_second_eh_frame
5474d94f
AM		 3794 || s == htab->elf.sdynbss
3795 || s == htab->elf.sdynrelro)
c434dee6
AJ		 3796 {
3797 /* Strip this section if we don't need it; see the
3798 comment below. */
3799 }
0112cd26 3800 else if (CONST_STRNEQ (bfd_get_section_name (dynobj, s), ".rela"))
c434dee6 3801 {
6de2ae4a 3802 if (s->size != 0 && s != htab->elf.srelplt)
b34976b6 3803 relocs = TRUE;
c434dee6
AJ		 3804
3805 /* We use the reloc_count field as a counter if we need
3806 to copy relocs into the output file. */
6de2ae4a 3807 if (s != htab->elf.srelplt)
67a4f2b7 3808 s->reloc_count = 0;
70256ad8 3809 }
c434dee6 3810 else
70256ad8
AJ		 3811 {
3812 /* It's not one of our sections, so don't allocate space. */
3813 continue;
3814 }
3815
eea6121a 3816 if (s->size == 0)
70256ad8 3817 {
c434dee6
AJ		 3818 /* If we don't need this section, strip it from the
3819 output file. This is mostly to handle .rela.bss and
3820 .rela.plt. We must create both sections in
3821 create_dynamic_sections, because they must be created
3822 before the linker maps input sections to output
3823 sections. The linker does that before
3824 adjust_dynamic_symbol is called, and it is that
3825 function which decides whether anything needs to go
3826 into these sections. */
3827
8423293d 3828 s->flags |= SEC_EXCLUDE;
70256ad8
AJ		 3829 continue;
3830 }
3831
c456f082
AM		 3832 if ((s->flags & SEC_HAS_CONTENTS) == 0)
3833 continue;
3834
70256ad8
AJ		 3835 /* Allocate memory for the section contents. We use bfd_zalloc
3836 here in case unused entries are not reclaimed before the
3837 section's contents are written out. This should not happen,
3838 but this way if it does, we get a R_X86_64_NONE reloc instead
3839 of garbage. */
eea6121a 3840 s->contents = (bfd_byte *) bfd_zalloc (dynobj, s->size);
c434dee6 3841 if (s->contents == NULL)
b34976b6 3842 return FALSE;
70256ad8
AJ		 3843 }
3844
e41b3a13 3845 if (htab->plt_eh_frame != NULL
9a2a56cc
AM		 3846 && htab->plt_eh_frame->contents != NULL)
3847 {
9a2a56cc 3848 memcpy (htab->plt_eh_frame->contents,
38b12349 3849 htab->plt.eh_frame_plt, htab->plt_eh_frame->size);
9a2a56cc
AM		 3850 bfd_put_32 (dynobj, htab->elf.splt->size,
3851 htab->plt_eh_frame->contents + PLT_FDE_LEN_OFFSET);
3852 }
e41b3a13 3853
fff53dae
L		 3854 if (htab->plt_got_eh_frame != NULL
3855 && htab->plt_got_eh_frame->contents != NULL)
3856 {
fff53dae 3857 memcpy (htab->plt_got_eh_frame->contents,
38b12349 3858 htab->non_lazy_plt->eh_frame_plt,
fff53dae
L		 3859 htab->plt_got_eh_frame->size);
3860 bfd_put_32 (dynobj, htab->plt_got->size,
3861 (htab->plt_got_eh_frame->contents
3862 + PLT_FDE_LEN_OFFSET));
3863 }
3864
f2c29a16
L		 3865 if (htab->plt_second_eh_frame != NULL
3866 && htab->plt_second_eh_frame->contents != NULL)
8361ed4d 3867 {
f2c29a16 3868 memcpy (htab->plt_second_eh_frame->contents,
38b12349 3869 htab->non_lazy_plt->eh_frame_plt,
f2c29a16
L		 3870 htab->plt_second_eh_frame->size);
3871 bfd_put_32 (dynobj, htab->plt_second->size,
3872 (htab->plt_second_eh_frame->contents
8361ed4d
L		 3873 + PLT_FDE_LEN_OFFSET));
3874 }
3875
c434dee6 3876 if (htab->elf.dynamic_sections_created)
70256ad8
AJ		 3877 {
3878 /* Add some entries to the .dynamic section. We fill in the
351f65ca 3879 values later, in elf_x86_64_finish_dynamic_sections, but we
70256ad8 3880 must add the entries now so that we get the correct size for
407443a3 3881 the .dynamic section. The DT_DEBUG entry is filled in by the
70256ad8 3882 dynamic linker and used by the debugger. */
dc810e39 3883#define add_dynamic_entry(TAG, VAL) \
5a580b3a 3884 _bfd_elf_add_dynamic_entry (info, TAG, VAL)
dc810e39 3885
0e1862bb 3886 if (bfd_link_executable (info))
70256ad8 3887 {
dc810e39 3888 if (!add_dynamic_entry (DT_DEBUG, 0))
b34976b6 3889 return FALSE;
70256ad8
AJ		 3890 }
3891
6de2ae4a 3892 if (htab->elf.splt->size != 0)
70256ad8 3893 {
7c1e8d3e
L		 3894 /* DT_PLTGOT is used by prelink even if there is no PLT
3895 relocation. */
3896 if (!add_dynamic_entry (DT_PLTGOT, 0))
b34976b6 3897 return FALSE;
97d343d4 3898 }
67a4f2b7 3899
97d343d4
L		 3900 if (htab->elf.srelplt->size != 0)
3901 {
3902 if (!add_dynamic_entry (DT_PLTRELSZ, 0)
3903 || !add_dynamic_entry (DT_PLTREL, DT_RELA)
3904 || !add_dynamic_entry (DT_JMPREL, 0))
67a4f2b7 3905 return FALSE;
70256ad8
AJ		 3906 }
3907
97d343d4
L		 3908 if (htab->tlsdesc_plt
3909 && (!add_dynamic_entry (DT_TLSDESC_PLT, 0)
3910 || !add_dynamic_entry (DT_TLSDESC_GOT, 0)))
3911 return FALSE;
3912
70256ad8
AJ		 3913 if (relocs)
3914 {
dc810e39
AM		 3915 if (!add_dynamic_entry (DT_RELA, 0)
3916 || !add_dynamic_entry (DT_RELASZ, 0)
351f65ca 3917 || !add_dynamic_entry (DT_RELAENT, bed->s->sizeof_rela))
b34976b6 3918 return FALSE;
70256ad8 3919
c434dee6
AJ		 3920 /* If any dynamic relocs apply to a read-only section,
3921 then we need a DT_TEXTREL entry. */
3922 if ((info->flags & DF_TEXTREL) == 0)
eed180f8 3923 elf_link_hash_traverse (&htab->elf,
351f65ca 3924 elf_x86_64_readonly_dynrelocs,
eb4ff4d6 3925 info);
c434dee6
AJ		 3926
3927 if ((info->flags & DF_TEXTREL) != 0)
3928 {
2df3368d 3929 if (htab->readonly_dynrelocs_against_ifunc)
8efa2874
L		 3930 {
3931 info->callbacks->einfo
3932 (_("%P%X: read-only segment has dynamic IFUNC relocations; recompile with -fPIC\n"));
3933 bfd_set_error (bfd_error_bad_value);
3934 return FALSE;
3935 }
3936
c434dee6 3937 if (!add_dynamic_entry (DT_TEXTREL, 0))
b34976b6 3938 return FALSE;
c434dee6 3939 }
70256ad8
AJ		 3940 }
3941 }
dc810e39 3942#undef add_dynamic_entry
70256ad8 3943
b34976b6 3944 return TRUE;
70256ad8
AJ		 3945}
3946
67a4f2b7 3947static bfd_boolean
351f65ca
L		 3948elf_x86_64_always_size_sections (bfd *output_bfd,
3949 struct bfd_link_info *info)
67a4f2b7
AO		 3950{
3951 asection *tls_sec = elf_hash_table (info)->tls_sec;
3952
3953 if (tls_sec)
3954 {
3955 struct elf_link_hash_entry *tlsbase;
3956
3957 tlsbase = elf_link_hash_lookup (elf_hash_table (info),
3958 "_TLS_MODULE_BASE_",
3959 FALSE, FALSE, FALSE);
3960
3961 if (tlsbase && tlsbase->type == STT_TLS)
3962 {
351f65ca 3963 struct elf_x86_64_link_hash_table *htab;
67a4f2b7
AO		 3964 struct bfd_link_hash_entry *bh = NULL;
3965 const struct elf_backend_data *bed
3966 = get_elf_backend_data (output_bfd);
3967
351f65ca 3968 htab = elf_x86_64_hash_table (info);
4dfe6ac6
NC		 3969 if (htab == NULL)
3970 return FALSE;
3971
67a4f2b7
AO		 3972 if (!(_bfd_generic_link_add_one_symbol
3973 (info, output_bfd, "_TLS_MODULE_BASE_", BSF_LOCAL,
3974 tls_sec, 0, NULL, FALSE,
3975 bed->collect, &bh)))
3976 return FALSE;
9f03412a 3977
4dfe6ac6 3978 htab->tls_module_base = bh;
9f03412a 3979
67a4f2b7
AO		 3980 tlsbase = (struct elf_link_hash_entry *)bh;
3981 tlsbase->def_regular = 1;
3982 tlsbase->other = STV_HIDDEN;
576fa883 3983 tlsbase->root.linker_def = 1;
67a4f2b7
AO		 3984 (*bed->elf_backend_hide_symbol) (info, tlsbase, TRUE);
3985 }
3986 }
3987
3988 return TRUE;
3989}
3990
9f03412a
AO		 3991/* _TLS_MODULE_BASE_ needs to be treated especially when linking
3992 executables. Rather than setting it to the beginning of the TLS
3993 section, we have to set it to the end. This function may be called
3994 multiple times, it is idempotent. */
3995
3996static void
351f65ca 3997elf_x86_64_set_tls_module_base (struct bfd_link_info *info)
9f03412a 3998{
351f65ca 3999 struct elf_x86_64_link_hash_table *htab;
9f03412a
AO		 4000 struct bfd_link_hash_entry *base;
4001
0e1862bb 4002 if (!bfd_link_executable (info))
9f03412a
AO		 4003 return;
4004
351f65ca 4005 htab = elf_x86_64_hash_table (info);
4dfe6ac6
NC		 4006 if (htab == NULL)
4007 return;
9f03412a 4008
4dfe6ac6
NC		 4009 base = htab->tls_module_base;
4010 if (base == NULL)
9f03412a
AO		 4011 return;
4012
4dfe6ac6 4013 base->u.def.value = htab->elf.tls_size;
9f03412a
AO		 4014}
4015
bffbf940
JJ		 4016/* Return the base VMA address which should be subtracted from real addresses
4017 when resolving @dtpoff relocation.
4018 This is PT_TLS segment p_vaddr. */
4019
4020static bfd_vma
351f65ca 4021elf_x86_64_dtpoff_base (struct bfd_link_info *info)
bffbf940 4022{
e1918d23
AM		 4023 /* If tls_sec is NULL, we should have signalled an error already. */
4024 if (elf_hash_table (info)->tls_sec == NULL)
bffbf940 4025 return 0;
e1918d23 4026 return elf_hash_table (info)->tls_sec->vma;
bffbf940
JJ		 4027}
4028
4029/* Return the relocation value for @tpoff relocation
4030 if STT_TLS virtual address is ADDRESS. */
4031
4032static bfd_vma
351f65ca 4033elf_x86_64_tpoff (struct bfd_link_info *info, bfd_vma address)
bffbf940 4034{
e1918d23 4035 struct elf_link_hash_table *htab = elf_hash_table (info);
7dc98aea
RO		 4036 const struct elf_backend_data *bed = get_elf_backend_data (info->output_bfd);
4037 bfd_vma static_tls_size;
bffbf940
JJ		 4038
4039 /* If tls_segment is NULL, we should have signalled an error already. */
e1918d23 4040 if (htab->tls_sec == NULL)
bffbf940 4041 return 0;
7dc98aea
RO		 4042
4043 /* Consider special static TLS alignment requirements. */
4044 static_tls_size = BFD_ALIGN (htab->tls_size, bed->static_tls_alignment);
4045 return address - static_tls_size - htab->tls_sec->vma;
bffbf940
JJ		 4046}
4047
90f487df
L		 4048/* Is the instruction before OFFSET in CONTENTS a 32bit relative
4049 branch? */
4050
4051static bfd_boolean
4052is_32bit_relative_branch (bfd_byte *contents, bfd_vma offset)
4053{
4054 /* Opcode Instruction
4055 0xe8 call
4056 0xe9 jump
4057 0x0f 0x8x conditional jump */
4058 return ((offset > 0
4059 && (contents [offset - 1] == 0xe8
4060 || contents [offset - 1] == 0xe9))
4061 || (offset > 1
4062 && contents [offset - 2] == 0x0f
4063 && (contents [offset - 1] & 0xf0) == 0x80));
4064}
4065
8d88c4ca
NC		 4066/* Relocate an x86_64 ELF section. */
4067
b34976b6 4068static bfd_boolean
351f65ca
L		 4069elf_x86_64_relocate_section (bfd *output_bfd,
4070 struct bfd_link_info *info,
4071 bfd *input_bfd,
4072 asection *input_section,
4073 bfd_byte *contents,
4074 Elf_Internal_Rela *relocs,
4075 Elf_Internal_Sym *local_syms,
4076 asection **local_sections)
8d88c4ca 4077{
351f65ca 4078 struct elf_x86_64_link_hash_table *htab;
8d88c4ca
NC		 4079 Elf_Internal_Shdr *symtab_hdr;
4080 struct elf_link_hash_entry **sym_hashes;
4081 bfd_vma *local_got_offsets;
67a4f2b7 4082 bfd_vma *local_tlsdesc_gotents;
c434dee6 4083 Elf_Internal_Rela *rel;
60f2e42e 4084 Elf_Internal_Rela *wrel;
8d88c4ca 4085 Elf_Internal_Rela *relend;
38b12349 4086 unsigned int plt_entry_size;
8d88c4ca 4087
0ffa91dd
NC		 4088 BFD_ASSERT (is_x86_64_elf (input_bfd));
4089
338c190a
L		 4090 /* Skip if check_relocs failed. */
4091 if (input_section->check_relocs_failed)
4092 return FALSE;
4093
351f65ca 4094 htab = elf_x86_64_hash_table (info);
4dfe6ac6
NC		 4095 if (htab == NULL)
4096 return FALSE;
38b12349 4097 plt_entry_size = htab->plt.plt_entry_size;
0ffa91dd 4098 symtab_hdr = &elf_symtab_hdr (input_bfd);
8d88c4ca
NC		 4099 sym_hashes = elf_sym_hashes (input_bfd);
4100 local_got_offsets = elf_local_got_offsets (input_bfd);
351f65ca 4101 local_tlsdesc_gotents = elf_x86_64_local_tlsdesc_gotent (input_bfd);
8d88c4ca 4102
351f65ca 4103 elf_x86_64_set_tls_module_base (info);
9f03412a 4104
60f2e42e 4105 rel = wrel = relocs;
8d88c4ca 4106 relend = relocs + input_section->reloc_count;
60f2e42e 4107 for (; rel < relend; wrel++, rel++)
8d88c4ca 4108 {
bffbf940 4109 unsigned int r_type;
8d88c4ca
NC		 4110 reloc_howto_type *howto;
4111 unsigned long r_symndx;
4112 struct elf_link_hash_entry *h;
0ff2b86e 4113 struct elf_x86_64_link_hash_entry *eh;
8d88c4ca
NC		 4114 Elf_Internal_Sym *sym;
4115 asection *sec;
0ff2b86e 4116 bfd_vma off, offplt, plt_offset;
8d88c4ca 4117 bfd_vma relocation;
b34976b6 4118 bfd_boolean unresolved_reloc;
8d88c4ca 4119 bfd_reloc_status_type r;
bffbf940 4120 int tls_type;
0ff2b86e 4121 asection *base_got, *resolved_plt;
1788fc08 4122 bfd_vma st_size;
aec6b87e 4123 bfd_boolean resolved_to_zero;
9e9821dd 4124 bfd_boolean relative_reloc;
8d88c4ca 4125
351f65ca 4126 r_type = ELF32_R_TYPE (rel->r_info);
fe4770f4
AJ		 4127 if (r_type == (int) R_X86_64_GNU_VTINHERIT
4128 || r_type == (int) R_X86_64_GNU_VTENTRY)
18954b29
L		 4129 {
4130 if (wrel != rel)
4131 *wrel = *rel;
4132 continue;
4133 }
8d88c4ca 4134
9911c0fc 4135 if (r_type >= (int) R_X86_64_standard)
8da6118f 4136 {
4eca0228 4137 _bfd_error_handler
695344c0 4138 /* xgettext:c-format */
9911c0fc 4139 (_("%B: unrecognized relocation (0x%x) in section `%A'"),
c08bb8dd 4140 input_bfd, r_type, input_section);
8da6118f 4141 bfd_set_error (bfd_error_bad_value);
b34976b6 4142 return FALSE;
8da6118f 4143 }
8d88c4ca 4144
d7921315 4145 if (r_type != (int) R_X86_64_32
eed180f8 4146 || ABI_64_P (output_bfd))
d7921315
L		 4147 howto = x86_64_elf_howto_table + r_type;
4148 else
4149 howto = (x86_64_elf_howto_table
4150 + ARRAY_SIZE (x86_64_elf_howto_table) - 1);
351f65ca 4151 r_symndx = htab->r_sym (rel->r_info);
8d88c4ca
NC		 4152 h = NULL;
4153 sym = NULL;
4154 sec = NULL;
b34976b6 4155 unresolved_reloc = FALSE;
8d88c4ca 4156 if (r_symndx < symtab_hdr->sh_info)
8da6118f
KH		 4157 {
4158 sym = local_syms + r_symndx;
4159 sec = local_sections[r_symndx];
c434dee6 4160
c25bc9fc
L		 4161 relocation = _bfd_elf_rela_local_sym (output_bfd, sym,
4162 &sec, rel);
1788fc08 4163 st_size = sym->st_size;
c25bc9fc
L		 4164
4165 /* Relocate against local STT_GNU_IFUNC symbol. */
0e1862bb 4166 if (!bfd_link_relocatable (info)
351f65ca 4167 && ELF_ST_TYPE (sym->st_info) == STT_GNU_IFUNC)
c25bc9fc 4168 {
351f65ca
L		 4169 h = elf_x86_64_get_local_sym_hash (htab, input_bfd,
4170 rel, FALSE);
c25bc9fc
L		 4171 if (h == NULL)
4172 abort ();
4173
eed180f8 4174 /* Set STT_GNU_IFUNC symbol value. */
c25bc9fc
L		 4175 h->root.u.def.value = sym->st_value;
4176 h->root.u.def.section = sec;
4177 }
8da6118f 4178 }
8d88c4ca 4179 else
8da6118f 4180 {
c9736ba0 4181 bfd_boolean warned ATTRIBUTE_UNUSED;
62d887d4 4182 bfd_boolean ignored ATTRIBUTE_UNUSED;
c434dee6 4183
b2a8e766
AM		 4184 RELOC_FOR_GLOBAL_SYMBOL (info, input_bfd, input_section, rel,
4185 r_symndx, symtab_hdr, sym_hashes,
4186 h, sec, relocation,
62d887d4 4187 unresolved_reloc, warned, ignored);
1788fc08 4188 st_size = h->size;
8da6118f 4189 }
ab96bf03 4190
dbaa2011 4191 if (sec != NULL && discarded_section (sec))
60f2e42e
L		 4192 {
4193 _bfd_clear_contents (howto, input_bfd, input_section,
4194 contents + rel->r_offset);
4195 wrel->r_offset = rel->r_offset;
4196 wrel->r_info = 0;
4197 wrel->r_addend = 0;
4198
4199 /* For ld -r, remove relocations in debug sections against
4200 sections defined in discarded sections. Not done for
4201 eh_frame editing code expects to be present. */
4202 if (bfd_link_relocatable (info)
4203 && (input_section->flags & SEC_DEBUGGING))
4204 wrel--;
4205
4206 continue;
4207 }
ab96bf03 4208
0e1862bb 4209 if (bfd_link_relocatable (info))
2d5da473
L		 4210 {
4211 if (wrel != rel)
4212 *wrel = *rel;
4213 continue;
4214 }
ab96bf03 4215
1788fc08 4216 if (rel->r_addend == 0 && !ABI_64_P (output_bfd))
64d25c44 4217 {
1788fc08
L		 4218 if (r_type == R_X86_64_64)
4219 {
4220 /* For x32, treat R_X86_64_64 like R_X86_64_32 and
4221 zero-extend it to 64bit if addend is zero. */
4222 r_type = R_X86_64_32;
4223 memset (contents + rel->r_offset + 4, 0, 4);
4224 }
4225 else if (r_type == R_X86_64_SIZE64)
4226 {
4227 /* For x32, treat R_X86_64_SIZE64 like R_X86_64_SIZE32 and
4228 zero-extend it to 64bit if addend is zero. */
4229 r_type = R_X86_64_SIZE32;
4230 memset (contents + rel->r_offset + 4, 0, 4);
4231 }
64d25c44
L		 4232 }
4233
0ff2b86e
L		 4234 eh = (struct elf_x86_64_link_hash_entry *) h;
4235
cbe950e9
L		 4236 /* Since STT_GNU_IFUNC symbol must go through PLT, we handle
4237 it here if it is defined in a non-shared object. */
4238 if (h != NULL
4239 && h->type == STT_GNU_IFUNC
4240 && h->def_regular)
4241 {
cbe950e9 4242 bfd_vma plt_index;
4c544807 4243 const char *name;
cbe950e9 4244
97dc35c8
L		 4245 if ((input_section->flags & SEC_ALLOC) == 0)
4246 {
4247 /* Dynamic relocs are not propagated for SEC_DEBUGGING
4248 sections because such sections are not SEC_ALLOC and
4249 thus ld.so will not process them. */
4250 if ((input_section->flags & SEC_DEBUGGING) != 0)
0eace210 4251 continue;
97dc35c8
L		 4252 abort ();
4253 }
233cc9c1
L		 4254
4255 switch (r_type)
4256 {
4257 default:
4258 break;
4259
4260 case R_X86_64_GOTPCREL:
4261 case R_X86_64_GOTPCRELX:
4262 case R_X86_64_REX_GOTPCRELX:
4263 case R_X86_64_GOTPCREL64:
4264 base_got = htab->elf.sgot;
4265 off = h->got.offset;
4266
4267 if (base_got == NULL)
4268 abort ();
4269
4270 if (off == (bfd_vma) -1)
4271 {
4272 /* We can't use h->got.offset here to save state, or
4273 even just remember the offset, as finish_dynamic_symbol
4274 would use that as offset into .got. */
4275
4276 if (h->plt.offset == (bfd_vma) -1)
4277 abort ();
4278
4279 if (htab->elf.splt != NULL)
4280 {
38b12349
L		 4281 plt_index = (h->plt.offset / plt_entry_size
4282 - htab->plt.has_plt0);
233cc9c1
L		 4283 off = (plt_index + 3) * GOT_ENTRY_SIZE;
4284 base_got = htab->elf.sgotplt;
4285 }
4286 else
4287 {
4288 plt_index = h->plt.offset / plt_entry_size;
4289 off = plt_index * GOT_ENTRY_SIZE;
4290 base_got = htab->elf.igotplt;
4291 }
4292
4293 if (h->dynindx == -1
4294 || h->forced_local
4295 || info->symbolic)
4296 {
4297 /* This references the local defitionion. We must
4298 initialize this entry in the global offset table.
4299 Since the offset must always be a multiple of 8,
4300 we use the least significant bit to record
4301 whether we have initialized it already.
4302
4303 When doing a dynamic link, we create a .rela.got
4304 relocation entry to initialize the value. This
4305 is done in the finish_dynamic_symbol routine. */
4306 if ((off & 1) != 0)
4307 off &= ~1;
4308 else
4309 {
4310 bfd_put_64 (output_bfd, relocation,
4311 base_got->contents + off);
4312 /* Note that this is harmless for the GOTPLT64
4313 case, as -1 | 1 still is -1. */
4314 h->got.offset |= 1;
4315 }
4316 }
4317 }
4318
4319 relocation = (base_got->output_section->vma
4320 + base_got->output_offset + off);
4321
4322 goto do_relocation;
4323 }
4324
4325 if (h->plt.offset == (bfd_vma) -1)
4326 {
4327 /* Handle static pointers of STT_GNU_IFUNC symbols. */
4328 if (r_type == htab->pointer_r_type
4329 && (input_section->flags & SEC_CODE) == 0)
4330 goto do_ifunc_pointer;
4331 goto bad_ifunc_reloc;
4332 }
cbe950e9
L		 4333
4334 /* STT_GNU_IFUNC symbol must go through PLT. */
0ff2b86e
L		 4335 if (htab->elf.splt != NULL)
4336 {
f2c29a16 4337 if (htab->plt_second != NULL)
0ff2b86e 4338 {
f2c29a16
L		 4339 resolved_plt = htab->plt_second;
4340 plt_offset = eh->plt_second.offset;
0ff2b86e
L		 4341 }
4342 else
4343 {
4344 resolved_plt = htab->elf.splt;
4345 plt_offset = h->plt.offset;
4346 }
4347 }
4348 else
4349 {
4350 resolved_plt = htab->elf.iplt;
4351 plt_offset = h->plt.offset;
4352 }
4353
4354 relocation = (resolved_plt->output_section->vma
4355 + resolved_plt->output_offset + plt_offset);
cbe950e9
L		 4356
4357 switch (r_type)
4358 {
4359 default:
233cc9c1 4360bad_ifunc_reloc:
4c544807
L		 4361 if (h->root.root.string)
4362 name = h->root.root.string;
4363 else
4364 name = bfd_elf_sym_name (input_bfd, symtab_hdr, sym,
4365 NULL);
4eca0228 4366 _bfd_error_handler
695344c0 4367 /* xgettext:c-format */
cbe950e9 4368 (_("%B: relocation %s against STT_GNU_IFUNC "
233cc9c1
L		 4369 "symbol `%s' isn't supported"), input_bfd,
4370 howto->name, name);
cbe950e9
L		 4371 bfd_set_error (bfd_error_bad_value);
4372 return FALSE;
4373
4374 case R_X86_64_32S:
0e1862bb 4375 if (bfd_link_pic (info))
cbe950e9 4376 abort ();
710ab287
L		 4377 goto do_relocation;
4378
248775ba
L		 4379 case R_X86_64_32:
4380 if (ABI_64_P (output_bfd))
4381 goto do_relocation;
17672001 4382 /* FALLTHROUGH */
eed180f8 4383 case R_X86_64_64:
233cc9c1 4384do_ifunc_pointer:
710ab287
L		 4385 if (rel->r_addend != 0)
4386 {
4c544807
L		 4387 if (h->root.root.string)
4388 name = h->root.root.string;
4389 else
4390 name = bfd_elf_sym_name (input_bfd, symtab_hdr,
4391 sym, NULL);
4eca0228 4392 _bfd_error_handler
695344c0 4393 /* xgettext:c-format */
710ab287
L		 4394 (_("%B: relocation %s against STT_GNU_IFUNC "
4395 "symbol `%s' has non-zero addend: %d"),
ef77d6af 4396 input_bfd, howto->name, name, rel->r_addend);
710ab287
L		 4397 bfd_set_error (bfd_error_bad_value);
4398 return FALSE;
4399 }
4400
4401 /* Generate dynamic relcoation only when there is a
233cc9c1
L		 4402 non-GOT reference in a shared object or there is no
4403 PLT. */
4404 if ((bfd_link_pic (info) && h->non_got_ref)
4405 || h->plt.offset == (bfd_vma) -1)
710ab287
L		 4406 {
4407 Elf_Internal_Rela outrel;
710ab287
L		 4408 asection *sreloc;
4409
c25bc9fc
L		 4410 /* Need a dynamic relocation to get the real function
4411 address. */
710ab287
L		 4412 outrel.r_offset = _bfd_elf_section_offset (output_bfd,
4413 info,
4414 input_section,
4415 rel->r_offset);
4416 if (outrel.r_offset == (bfd_vma) -1
4417 || outrel.r_offset == (bfd_vma) -2)
4418 abort ();
4419
4420 outrel.r_offset += (input_section->output_section->vma
4421 + input_section->output_offset);
4422
4423 if (h->dynindx == -1
44c4ea11 4424 || h->forced_local
0e1862bb 4425 || bfd_link_executable (info))
710ab287 4426 {
6322e5c5
L		 4427 info->callbacks->minfo (_("Local IFUNC function `%s' in %B\n"),
4428 h->root.root.string,
4429 h->root.u.def.section->owner);
4430
710ab287 4431 /* This symbol is resolved locally. */
56b8aada
L		 4432 outrel.r_info = htab->r_info (0, R_X86_64_IRELATIVE);
4433 outrel.r_addend = (h->root.u.def.value
4434 + h->root.u.def.section->output_section->vma
4435 + h->root.u.def.section->output_offset);
710ab287
L		 4436 }
4437 else
4438 {
351f65ca 4439 outrel.r_info = htab->r_info (h->dynindx, r_type);
710ab287
L		 4440 outrel.r_addend = 0;
4441 }
4442
233cc9c1
L		 4443 /* Dynamic relocations are stored in
4444 1. .rela.ifunc section in PIC object.
4445 2. .rela.got section in dynamic executable.
4446 3. .rela.iplt section in static executable. */
4447 if (bfd_link_pic (info))
4448 sreloc = htab->elf.irelifunc;
4449 else if (htab->elf.splt != NULL)
4450 sreloc = htab->elf.srelgot;
4451 else
4452 sreloc = htab->elf.irelplt;
351f65ca 4453 elf_append_rela (output_bfd, sreloc, &outrel);
710ab287
L		 4454
4455 /* If this reloc is against an external symbol, we
4456 do not want to fiddle with the addend. Otherwise,
4457 we need to include the symbol value so that it
4458 becomes an addend for the dynamic reloc. For an
4459 internal symbol, we have updated addend. */
56b8aada 4460 continue;
710ab287 4461 }
17672001 4462 /* FALLTHROUGH */
cbe950e9 4463 case R_X86_64_PC32:
c3320543 4464 case R_X86_64_PC32_BND:
cbe950e9
L		 4465 case R_X86_64_PC64:
4466 case R_X86_64_PLT32:
c3320543 4467 case R_X86_64_PLT32_BND:
cbe950e9 4468 goto do_relocation;
cbe950e9
L		 4469 }
4470 }
4471
aec6b87e 4472 resolved_to_zero = (eh != NULL
e62b9723
L		 4473 && UNDEFINED_WEAK_RESOLVED_TO_ZERO (info,
4474 eh->has_got_reloc,
4475 eh));
aec6b87e 4476
70256ad8
AJ		 4477 /* When generating a shared object, the relocations handled here are
4478 copied into the output file to be resolved at run time. */
4479 switch (r_type)
4480 {
4481 case R_X86_64_GOT32:
7b81dfbb 4482 case R_X86_64_GOT64:
70256ad8
AJ		 4483 /* Relocation is to the entry for this symbol in the global
4484 offset table. */
70256ad8 4485 case R_X86_64_GOTPCREL:
56ceb5b5
L		 4486 case R_X86_64_GOTPCRELX:
4487 case R_X86_64_REX_GOTPCRELX:
7b81dfbb
AJ		 4488 case R_X86_64_GOTPCREL64:
4489 /* Use global offset table entry as symbol value. */
4490 case R_X86_64_GOTPLT64:
553d1284 4491 /* This is obsolete and treated the the same as GOT64. */
6de2ae4a 4492 base_got = htab->elf.sgot;
7b81dfbb 4493
6de2ae4a 4494 if (htab->elf.sgot == NULL)
c434dee6 4495 abort ();
053579d7 4496
9e9821dd 4497 relative_reloc = FALSE;
51e0a107 4498 if (h != NULL)
70256ad8 4499 {
b34976b6 4500 bfd_boolean dyn;
c434dee6
AJ		 4501
4502 off = h->got.offset;
7b81dfbb 4503 if (h->needs_plt
eed180f8 4504 && h->plt.offset != (bfd_vma)-1
7b81dfbb
AJ		 4505 && off == (bfd_vma)-1)
4506 {
4507 /* We can't use h->got.offset here to save
4508 state, or even just remember the offset, as
4509 finish_dynamic_symbol would use that as offset into
4510 .got. */
38b12349
L		 4511 bfd_vma plt_index = (h->plt.offset / plt_entry_size
4512 - htab->plt.has_plt0);
7b81dfbb 4513 off = (plt_index + 3) * GOT_ENTRY_SIZE;
6de2ae4a 4514 base_got = htab->elf.sgotplt;
7b81dfbb
AJ		 4515 }
4516
c434dee6 4517 dyn = htab->elf.dynamic_sections_created;
51e0a107 4518
0e1862bb
L		 4519 if (! WILL_CALL_FINISH_DYNAMIC_SYMBOL (dyn, bfd_link_pic (info), h)
4520 || (bfd_link_pic (info)
27482721 4521 && SYMBOL_REFERENCES_LOCAL (info, h))
4bc6e03a
AJ		 4522 || (ELF_ST_VISIBILITY (h->other)
4523 && h->root.type == bfd_link_hash_undefweak))
51e0a107
JH		 4524 {
4525 /* This is actually a static link, or it is a -Bsymbolic
4526 link and the symbol is defined locally, or the symbol
407443a3 4527 was forced to be local because of a version file. We
51e0a107
JH		 4528 must initialize this entry in the global offset table.
4529 Since the offset must always be a multiple of 8, we
4530 use the least significant bit to record whether we
4531 have initialized it already.
4532
4533 When doing a dynamic link, we create a .rela.got
407443a3
AJ		 4534 relocation entry to initialize the value. This is
4535 done in the finish_dynamic_symbol routine. */
51e0a107
JH		 4536 if ((off & 1) != 0)
4537 off &= ~1;
4538 else
4539 {
4540 bfd_put_64 (output_bfd, relocation,
7b81dfbb
AJ		 4541 base_got->contents + off);
4542 /* Note that this is harmless for the GOTPLT64 case,
eed180f8 4543 as -1 | 1 still is -1. */
51e0a107 4544 h->got.offset |= 1;
9e9821dd
L		 4545
4546 if (h->dynindx == -1
4547 && !h->forced_local
4548 && h->root.type != bfd_link_hash_undefweak
4549 && bfd_link_pic (info))
4550 {
4551 /* If this symbol isn't dynamic in PIC,
4552 generate R_X86_64_RELATIVE here. */
4553 eh->no_finish_dynamic_symbol = 1;
4554 relative_reloc = TRUE;
4555 }
51e0a107
JH		 4556 }
4557 }
053579d7 4558 else
b34976b6 4559 unresolved_reloc = FALSE;
70256ad8 4560 }
51e0a107
JH		 4561 else
4562 {
c434dee6
AJ		 4563 if (local_got_offsets == NULL)
4564 abort ();
51e0a107
JH		 4565
4566 off = local_got_offsets[r_symndx];
4567
4568 /* The offset must always be a multiple of 8. We use
407443a3
AJ		 4569 the least significant bit to record whether we have
4570 already generated the necessary reloc. */
51e0a107
JH		 4571 if ((off & 1) != 0)
4572 off &= ~1;
4573 else
4574 {
c434dee6 4575 bfd_put_64 (output_bfd, relocation,
7b81dfbb 4576 base_got->contents + off);
9e9821dd 4577 local_got_offsets[r_symndx] |= 1;
51e0a107 4578
0e1862bb 4579 if (bfd_link_pic (info))
9e9821dd 4580 relative_reloc = TRUE;
51e0a107 4581 }
51e0a107 4582 }
6a2bda3f 4583
9e9821dd
L		 4584 if (relative_reloc)
4585 {
4586 asection *s;
4587 Elf_Internal_Rela outrel;
4588
4589 /* We need to generate a R_X86_64_RELATIVE reloc
4590 for the dynamic linker. */
4591 s = htab->elf.srelgot;
4592 if (s == NULL)
4593 abort ();
4594
4595 outrel.r_offset = (base_got->output_section->vma
4596 + base_got->output_offset
4597 + off);
4598 outrel.r_info = htab->r_info (0, R_X86_64_RELATIVE);
4599 outrel.r_addend = relocation;
4600 elf_append_rela (output_bfd, s, &outrel);
4601 }
4602
c434dee6
AJ		 4603 if (off >= (bfd_vma) -2)
4604 abort ();
4605
7b81dfbb
AJ		 4606 relocation = base_got->output_section->vma
4607 + base_got->output_offset + off;
56ceb5b5
L		 4608 if (r_type != R_X86_64_GOTPCREL
4609 && r_type != R_X86_64_GOTPCRELX
4610 && r_type != R_X86_64_REX_GOTPCRELX
4611 && r_type != R_X86_64_GOTPCREL64)
6de2ae4a
L		 4612 relocation -= htab->elf.sgotplt->output_section->vma
4613 - htab->elf.sgotplt->output_offset;
c434dee6 4614
70256ad8
AJ		 4615 break;
4616
d6ab8113
JB		 4617 case R_X86_64_GOTOFF64:
4618 /* Relocation is relative to the start of the global offset
4619 table. */
4620
3d949995
L		 4621 /* Check to make sure it isn't a protected function or data
4622 symbol for shared library since it may not be local when
e3c0e327
L		 4623 used as function address or with copy relocation. We also
4624 need to make sure that a symbol is referenced locally. */
0e1862bb 4625 if (bfd_link_pic (info) && h)
d6ab8113 4626 {
e3c0e327
L		 4627 if (!h->def_regular)
4628 {
4629 const char *v;
4630
4631 switch (ELF_ST_VISIBILITY (h->other))
4632 {
4633 case STV_HIDDEN:
4634 v = _("hidden symbol");
4635 break;
4636 case STV_INTERNAL:
4637 v = _("internal symbol");
4638 break;
4639 case STV_PROTECTED:
4640 v = _("protected symbol");
4641 break;
4642 default:
4643 v = _("symbol");
4644 break;
4645 }
4646
4eca0228 4647 _bfd_error_handler
695344c0 4648 /* xgettext:c-format */
63a5468a
AM		 4649 (_("%B: relocation R_X86_64_GOTOFF64 against undefined %s"
4650 " `%s' can not be used when making a shared object"),
e3c0e327
L		 4651 input_bfd, v, h->root.root.string);
4652 bfd_set_error (bfd_error_bad_value);
4653 return FALSE;
4654 }
0e1862bb 4655 else if (!bfd_link_executable (info)
e3c0e327
L		 4656 && !SYMBOL_REFERENCES_LOCAL (info, h)
4657 && (h->type == STT_FUNC
4658 || h->type == STT_OBJECT)
4659 && ELF_ST_VISIBILITY (h->other) == STV_PROTECTED)
4660 {
4eca0228 4661 _bfd_error_handler
695344c0 4662 /* xgettext:c-format */
63a5468a
AM		 4663 (_("%B: relocation R_X86_64_GOTOFF64 against protected %s"
4664 " `%s' can not be used when making a shared object"),
e3c0e327
L		 4665 input_bfd,
4666 h->type == STT_FUNC ? "function" : "data",
4667 h->root.root.string);
4668 bfd_set_error (bfd_error_bad_value);
d6ab8113 4669 return FALSE;
e3c0e327 4670 }
d6ab8113
JB		 4671 }
4672
4673 /* Note that sgot is not involved in this
4674 calculation. We always want the start of .got.plt. If we
4675 defined _GLOBAL_OFFSET_TABLE_ in a different way, as is
4676 permitted by the ABI, we might have to change this
4677 calculation. */
6de2ae4a
L		 4678 relocation -= htab->elf.sgotplt->output_section->vma
4679 + htab->elf.sgotplt->output_offset;
d6ab8113
JB		 4680 break;
4681
4682 case R_X86_64_GOTPC32:
7b81dfbb 4683 case R_X86_64_GOTPC64:
d6ab8113 4684 /* Use global offset table as symbol value. */
6de2ae4a
L		 4685 relocation = htab->elf.sgotplt->output_section->vma
4686 + htab->elf.sgotplt->output_offset;
d6ab8113
JB		 4687 unresolved_reloc = FALSE;
4688 break;
7b81dfbb
AJ		 4689
4690 case R_X86_64_PLTOFF64:
4691 /* Relocation is PLT entry relative to GOT. For local
4692 symbols it's the symbol itself relative to GOT. */
eed180f8 4693 if (h != NULL
7b81dfbb 4694 /* See PLT32 handling. */
9d734efa
L		 4695 && (h->plt.offset != (bfd_vma) -1
4696 || eh->plt_got.offset != (bfd_vma) -1)
6de2ae4a 4697 && htab->elf.splt != NULL)
7b81dfbb 4698 {
9d734efa
L		 4699 if (eh->plt_got.offset != (bfd_vma) -1)
4700 {
4701 /* Use the GOT PLT. */
4702 resolved_plt = htab->plt_got;
4703 plt_offset = eh->plt_got.offset;
4704 }
f2c29a16 4705 else if (htab->plt_second != NULL)
0ff2b86e 4706 {
f2c29a16
L		 4707 resolved_plt = htab->plt_second;
4708 plt_offset = eh->plt_second.offset;
0ff2b86e
L		 4709 }
4710 else
4711 {
4712 resolved_plt = htab->elf.splt;
4713 plt_offset = h->plt.offset;
4714 }
4715
4716 relocation = (resolved_plt->output_section->vma
4717 + resolved_plt->output_offset
4718 + plt_offset);
7b81dfbb
AJ		 4719 unresolved_reloc = FALSE;
4720 }
4721
6de2ae4a
L		 4722 relocation -= htab->elf.sgotplt->output_section->vma
4723 + htab->elf.sgotplt->output_offset;
7b81dfbb 4724 break;
d6ab8113 4725
70256ad8 4726 case R_X86_64_PLT32:
c3320543 4727 case R_X86_64_PLT32_BND:
70256ad8
AJ		 4728 /* Relocation is to the entry for this symbol in the
4729 procedure linkage table. */
4730
4731 /* Resolve a PLT32 reloc against a local symbol directly,
407443a3 4732 without using the procedure linkage table. */
70256ad8
AJ		 4733 if (h == NULL)
4734 break;
4735
dd7e64d4
L		 4736 if ((h->plt.offset == (bfd_vma) -1
4737 && eh->plt_got.offset == (bfd_vma) -1)
6de2ae4a 4738 || htab->elf.splt == NULL)
70256ad8
AJ		 4739 {
4740 /* We didn't make a PLT entry for this symbol. This
407443a3
AJ		 4741 happens when statically linking PIC code, or when
4742 using -Bsymbolic. */
70256ad8
AJ		 4743 break;
4744 }
4745
dd7e64d4 4746 if (h->plt.offset != (bfd_vma) -1)
0ff2b86e 4747 {
f2c29a16 4748 if (htab->plt_second != NULL)
dd7e64d4 4749 {
f2c29a16
L		 4750 resolved_plt = htab->plt_second;
4751 plt_offset = eh->plt_second.offset;
dd7e64d4
L		 4752 }
4753 else
4754 {
4755 resolved_plt = htab->elf.splt;
4756 plt_offset = h->plt.offset;
4757 }
0ff2b86e
L		 4758 }
4759 else
4760 {
dd7e64d4
L		 4761 /* Use the GOT PLT. */
4762 resolved_plt = htab->plt_got;
4763 plt_offset = eh->plt_got.offset;
0ff2b86e
L		 4764 }
4765
4766 relocation = (resolved_plt->output_section->vma
4767 + resolved_plt->output_offset
4768 + plt_offset);
b34976b6 4769 unresolved_reloc = FALSE;
70256ad8
AJ		 4770 break;
4771
1788fc08
L		 4772 case R_X86_64_SIZE32:
4773 case R_X86_64_SIZE64:
1788fc08
L		 4774 /* Set to symbol size. */
4775 relocation = st_size;
4776 goto direct;
4777
fd8ab9e5
AJ		 4778 case R_X86_64_PC8:
4779 case R_X86_64_PC16:
4780 case R_X86_64_PC32:
c3320543 4781 case R_X86_64_PC32_BND:
6333bc0d 4782 /* Don't complain about -fPIC if the symbol is undefined when
aec6b87e
L		 4783 building executable unless it is unresolved weak symbol. */
4784 if ((input_section->flags & SEC_ALLOC) != 0
90f487df 4785 && (input_section->flags & SEC_READONLY) != 0
6333bc0d 4786 && h != NULL
aec6b87e
L		 4787 && ((bfd_link_executable (info)
4788 && h->root.type == bfd_link_hash_undefweak
4789 && !resolved_to_zero)
4790 || (bfd_link_pic (info)
4791 && !(bfd_link_pie (info)
4792 && h->root.type == bfd_link_hash_undefined))))
6610a52d 4793 {
41bed6dd
L		 4794 bfd_boolean fail = FALSE;
4795 bfd_boolean branch
c3320543
L		 4796 = ((r_type == R_X86_64_PC32
4797 || r_type == R_X86_64_PC32_BND)
41bed6dd
L		 4798 && is_32bit_relative_branch (contents, rel->r_offset));
4799
4800 if (SYMBOL_REFERENCES_LOCAL (info, h))
4801 {
4802 /* Symbol is referenced locally. Make sure it is
4803 defined locally or for a branch. */
8170f769
L		 4804 fail = (!(h->def_regular || ELF_COMMON_DEF_P (h))
4805 && !branch);
41bed6dd 4806 }
aec6b87e 4807 else if (!(bfd_link_pie (info)
bc696fd5 4808 && (h->needs_copy || eh->needs_copy)))
41bed6dd 4809 {
9a926d55
L		 4810 /* Symbol doesn't need copy reloc and isn't referenced
4811 locally. We only allow branch to symbol with
4812 non-default visibility. */
41bed6dd
L		 4813 fail = (!branch
4814 || ELF_ST_VISIBILITY (h->other) == STV_DEFAULT);
4815 }
4816
4817 if (fail)
338c190a
L		 4818 return elf_x86_64_need_pic (input_bfd, input_section,
4819 h, NULL, NULL, howto);
6610a52d
L		 4820 }
4821 /* Fall through. */
4822
70256ad8
AJ		 4823 case R_X86_64_8:
4824 case R_X86_64_16:
4825 case R_X86_64_32:
d6ab8113 4826 case R_X86_64_PC64:
6b3db546 4827 case R_X86_64_64:
80643fbc 4828 /* FIXME: The ABI says the linker should make sure the value is
407443a3 4829 the same when it's zeroextended to 64 bit. */
c434dee6 4830
1788fc08 4831direct:
b1e24c02 4832 if ((input_section->flags & SEC_ALLOC) == 0)
c434dee6
AJ		 4833 break;
4834
9a926d55 4835 /* Don't copy a pc-relative relocation into the output file
6333bc0d 4836 if the symbol needs copy reloc or the symbol is undefined
04ebc307 4837 when building executable. Copy dynamic function pointer
aec6b87e
L		 4838 relocations. Don't generate dynamic relocations against
4839 resolved undefined weak symbols in PIE. */
0e1862bb 4840 if ((bfd_link_pic (info)
aec6b87e 4841 && !(bfd_link_pie (info)
fd9edc90 4842 && h != NULL
6333bc0d
L		 4843 && (h->needs_copy
4844 || eh->needs_copy
4845 || h->root.type == bfd_link_hash_undefined)
d8457a04
L		 4846 && (IS_X86_64_PCREL_TYPE (r_type)
4847 || r_type == R_X86_64_SIZE32
4848 || r_type == R_X86_64_SIZE64))
4bc6e03a 4849 && (h == NULL
aec6b87e
L		 4850 || ((ELF_ST_VISIBILITY (h->other) == STV_DEFAULT
4851 && !resolved_to_zero)
4852 || h->root.type != bfd_link_hash_undefweak))
1788fc08
L		 4853 && ((! IS_X86_64_PCREL_TYPE (r_type)
4854 && r_type != R_X86_64_SIZE32
4855 && r_type != R_X86_64_SIZE64)
d8045f23 4856 || ! SYMBOL_CALLS_LOCAL (info, h)))
d40d037c 4857 || (ELIMINATE_COPY_RELOCS
0e1862bb 4858 && !bfd_link_pic (info)
c434dee6
AJ		 4859 && h != NULL
4860 && h->dynindx != -1
aec6b87e
L		 4861 && (!h->non_got_ref
4862 || eh->func_pointer_refcount > 0
4863 || (h->root.type == bfd_link_hash_undefweak
4864 && !resolved_to_zero))
bae420ef
L		 4865 && ((h->def_dynamic && !h->def_regular)
4866 /* Undefined weak symbol is bound locally when
4867 PIC is false. */
0f88be7a 4868 || h->root.type == bfd_link_hash_undefined)))
70256ad8
AJ		 4869 {
4870 Elf_Internal_Rela outrel;
b34976b6 4871 bfd_boolean skip, relocate;
c434dee6 4872 asection *sreloc;
70256ad8
AJ		 4873
4874 /* When generating a shared object, these relocations
4875 are copied into the output file to be resolved at run
407443a3 4876 time. */
b34976b6
AM		 4877 skip = FALSE;
4878 relocate = FALSE;
70256ad8 4879
c629eae0
JJ		 4880 outrel.r_offset =
4881 _bfd_elf_section_offset (output_bfd, info, input_section,
c434dee6 4882 rel->r_offset);
c629eae0 4883 if (outrel.r_offset == (bfd_vma) -1)
b34976b6 4884 skip = TRUE;
0fb19cbc 4885 else if (outrel.r_offset == (bfd_vma) -2)
b34976b6 4886 skip = TRUE, relocate = TRUE;
70256ad8
AJ		 4887
4888 outrel.r_offset += (input_section->output_section->vma
4889 + input_section->output_offset);
4890
4891 if (skip)
0bb2d96a 4892 memset (&outrel, 0, sizeof outrel);
c434dee6 4893
fd8ab9e5
AJ		 4894 /* h->dynindx may be -1 if this symbol was marked to
4895 become local. */
4896 else if (h != NULL
c434dee6 4897 && h->dynindx != -1
d8045f23 4898 && (IS_X86_64_PCREL_TYPE (r_type)
4e0c91e4
L		 4899 || !(bfd_link_executable (info)
4900 || SYMBOLIC_BIND (info, h))
d8045f23 4901 || ! h->def_regular))
70256ad8 4902 {
351f65ca 4903 outrel.r_info = htab->r_info (h->dynindx, r_type);
c434dee6 4904 outrel.r_addend = rel->r_addend;
70256ad8
AJ		 4905 }
4906 else
4907 {
4c10bbaa
L		 4908 /* This symbol is local, or marked to become local.
4909 When relocation overflow check is disabled, we
4910 convert R_X86_64_32 to dynamic R_X86_64_RELATIVE. */
4911 if (r_type == htab->pointer_r_type
4912 || (r_type == R_X86_64_32
4913 && info->no_reloc_overflow_check))
607c0e09 4914 {
b34976b6 4915 relocate = TRUE;
351f65ca 4916 outrel.r_info = htab->r_info (0, R_X86_64_RELATIVE);
607c0e09
AS		 4917 outrel.r_addend = relocation + rel->r_addend;
4918 }
64d25c44
L		 4919 else if (r_type == R_X86_64_64
4920 && !ABI_64_P (output_bfd))
4921 {
4922 relocate = TRUE;
4923 outrel.r_info = htab->r_info (0,
4924 R_X86_64_RELATIVE64);
4925 outrel.r_addend = relocation + rel->r_addend;
8cf0d2dd
L		 4926 /* Check addend overflow. */
4927 if ((outrel.r_addend & 0x80000000)
4928 != (rel->r_addend & 0x80000000))
4929 {
4930 const char *name;
268a8d3a 4931 int addend = rel->r_addend;
8cf0d2dd
L		 4932 if (h && h->root.root.string)
4933 name = h->root.root.string;
4934 else
4935 name = bfd_elf_sym_name (input_bfd, symtab_hdr,
4936 sym, NULL);
6f2c9068 4937 if (addend < 0)
4eca0228 4938 _bfd_error_handler
695344c0 4939 /* xgettext:c-format */
268a8d3a 4940 (_("%B: addend -0x%x in relocation %s against "
6f2c9068
L		 4941 "symbol `%s' at 0x%lx in section `%A' is "
4942 "out of range"),
c08bb8dd
AM		 4943 input_bfd, addend, howto->name, name,
4944 (unsigned long) rel->r_offset, input_section);
6f2c9068 4945 else
4eca0228 4946 _bfd_error_handler
695344c0 4947 /* xgettext:c-format */
268a8d3a 4948 (_("%B: addend 0x%x in relocation %s against "
6f2c9068
L		 4949 "symbol `%s' at 0x%lx in section `%A' is "
4950 "out of range"),
c08bb8dd
AM		 4951 input_bfd, addend, howto->name, name,
4952 (unsigned long) rel->r_offset, input_section);
8cf0d2dd
L		 4953 bfd_set_error (bfd_error_bad_value);
4954 return FALSE;
4955 }
64d25c44 4956 }
607c0e09
AS		 4957 else
4958 {
4959 long sindx;
4960
8517fae7 4961 if (bfd_is_abs_section (sec))
607c0e09
AS		 4962 sindx = 0;
4963 else if (sec == NULL || sec->owner == NULL)
4964 {
4965 bfd_set_error (bfd_error_bad_value);
b34976b6 4966 return FALSE;
607c0e09
AS		 4967 }
4968 else
4969 {
4970 asection *osec;
4971
74541ad4
AM		 4972 /* We are turning this relocation into one
4973 against a section symbol. It would be
4974 proper to subtract the symbol's value,
4975 osec->vma, from the emitted reloc addend,
4976 but ld.so expects buggy relocs. */
607c0e09
AS		 4977 osec = sec->output_section;
4978 sindx = elf_section_data (osec)->dynindx;
74541ad4
AM		 4979 if (sindx == 0)
4980 {
4981 asection *oi = htab->elf.text_index_section;
4982 sindx = elf_section_data (oi)->dynindx;
4983 }
4984 BFD_ASSERT (sindx != 0);
607c0e09
AS		 4985 }
4986
351f65ca 4987 outrel.r_info = htab->r_info (sindx, r_type);
607c0e09
AS		 4988 outrel.r_addend = relocation + rel->r_addend;
4989 }
70256ad8
AJ		 4990 }
4991
cbe950e9 4992 sreloc = elf_section_data (input_section)->sreloc;
d8045f23 4993
62d78908
L		 4994 if (sreloc == NULL || sreloc->contents == NULL)
4995 {
4996 r = bfd_reloc_notsupported;
4997 goto check_relocation_error;
4998 }
c434dee6 4999
351f65ca 5000 elf_append_rela (output_bfd, sreloc, &outrel);
70256ad8
AJ		 5001
5002 /* If this reloc is against an external symbol, we do
5003 not want to fiddle with the addend. Otherwise, we
5004 need to include the symbol value so that it becomes
5005 an addend for the dynamic reloc. */
0f88be7a 5006 if (! relocate)
70256ad8
AJ		 5007 continue;
5008 }
5009
5010 break;
5011
bffbf940 5012 case R_X86_64_TLSGD:
67a4f2b7
AO		 5013 case R_X86_64_GOTPC32_TLSDESC:
5014 case R_X86_64_TLSDESC_CALL:
bffbf940 5015 case R_X86_64_GOTTPOFF:
bffbf940
JJ		 5016 tls_type = GOT_UNKNOWN;
5017 if (h == NULL && local_got_offsets)
351f65ca 5018 tls_type = elf_x86_64_local_got_tls_type (input_bfd) [r_symndx];
bffbf940 5019 else if (h != NULL)
351f65ca 5020 tls_type = elf_x86_64_hash_entry (h)->tls_type;
142411ca 5021
351f65ca
L		 5022 if (! elf_x86_64_tls_transition (info, input_bfd,
5023 input_section, contents,
5024 symtab_hdr, sym_hashes,
5025 &r_type, tls_type, rel,
bedfd056 5026 relend, h, r_symndx, TRUE))
534a31f6 5027 return FALSE;
bffbf940
JJ		 5028
5029 if (r_type == R_X86_64_TPOFF32)
5030 {
142411ca
L		 5031 bfd_vma roff = rel->r_offset;
5032
bffbf940 5033 BFD_ASSERT (! unresolved_reloc);
142411ca 5034
351f65ca 5035 if (ELF32_R_TYPE (rel->r_info) == R_X86_64_TLSGD)
bffbf940 5036 {
52bc799a 5037 /* GD->LE transition. For 64bit, change
e2cbcd91
L		 5038 .byte 0x66; leaq foo@tlsgd(%rip), %rdi
5039 .word 0x6666; rex64; call __tls_get_addr@PLT
5040 or
5041 .byte 0x66; leaq foo@tlsgd(%rip), %rdi
5042 .byte 0x66; rex64
5043 call *__tls_get_addr@GOTPCREL(%rip)
5044 which may be converted to
5045 addr32 call __tls_get_addr
52bc799a 5046 into:
e2cbcd91
L		 5047 movq %fs:0, %rax
5048 leaq foo@tpoff(%rax), %rax
52bc799a 5049 For 32bit, change
e2cbcd91
L		 5050 leaq foo@tlsgd(%rip), %rdi
5051 .word 0x6666; rex64; call __tls_get_addr@PLT
5052 or
5053 leaq foo@tlsgd(%rip), %rdi
5054 .byte 0x66; rex64
5055 call *__tls_get_addr@GOTPCREL(%rip)
5056 which may be converted to
5057 addr32 call __tls_get_addr
52bc799a 5058 into:
e2cbcd91
L		 5059 movl %fs:0, %eax
5060 leaq foo@tpoff(%rax), %rax
5c98a14e 5061 For largepic, change:
e2cbcd91
L		 5062 leaq foo@tlsgd(%rip), %rdi
5063 movabsq $__tls_get_addr@pltoff, %rax
5064 addq %r15, %rax
5065 call *%rax
5c98a14e 5066 into:
e2cbcd91
L		 5067 movq %fs:0, %rax
5068 leaq foo@tpoff(%rax), %rax
5069 nopw 0x0(%rax,%rax,1) */
5c98a14e 5070 int largepic = 0;
e2cbcd91 5071 if (ABI_64_P (output_bfd))
5c98a14e 5072 {
e2cbcd91
L		 5073 if (contents[roff + 5] == 0xb8)
5074 {
5075 memcpy (contents + roff - 3,
5076 "\x64\x48\x8b\x04\x25\0\0\0\0\x48\x8d\x80"
5077 "\0\0\0\0\x66\x0f\x1f\x44\0", 22);
5078 largepic = 1;
5079 }
5080 else
5081 memcpy (contents + roff - 4,
5082 "\x64\x48\x8b\x04\x25\0\0\0\0\x48\x8d\x80\0\0\0",
5083 16);
5c98a14e 5084 }
52bc799a
L		 5085 else
5086 memcpy (contents + roff - 3,
5087 "\x64\x8b\x04\x25\0\0\0\0\x48\x8d\x80\0\0\0",
5088 15);
eb4ff4d6 5089 bfd_put_32 (output_bfd,
351f65ca 5090 elf_x86_64_tpoff (info, relocation),
5c98a14e 5091 contents + roff + 8 + largepic);
e2cbcd91
L		 5092 /* Skip R_X86_64_PC32, R_X86_64_PLT32,
5093 R_X86_64_GOTPCRELX and R_X86_64_PLTOFF64. */
bffbf940 5094 rel++;
60f2e42e 5095 wrel++;
bffbf940
JJ		 5096 continue;
5097 }
351f65ca 5098 else if (ELF32_R_TYPE (rel->r_info) == R_X86_64_GOTPC32_TLSDESC)
67a4f2b7
AO		 5099 {
5100 /* GDesc -> LE transition.
5101 It's originally something like:
5102 leaq x@tlsdesc(%rip), %rax
5103
5104 Change it to:
c9736ba0 5105 movl $x@tpoff, %rax. */
67a4f2b7 5106
c9736ba0 5107 unsigned int val, type;
67a4f2b7 5108
67a4f2b7 5109 type = bfd_get_8 (input_bfd, contents + roff - 3);
67a4f2b7 5110 val = bfd_get_8 (input_bfd, contents + roff - 1);
67a4f2b7
AO		 5111 bfd_put_8 (output_bfd, 0x48 | ((type >> 2) & 1),
5112 contents + roff - 3);
5113 bfd_put_8 (output_bfd, 0xc7, contents + roff - 2);
5114 bfd_put_8 (output_bfd, 0xc0 | ((val >> 3) & 7),
5115 contents + roff - 1);
eb4ff4d6 5116 bfd_put_32 (output_bfd,
351f65ca 5117 elf_x86_64_tpoff (info, relocation),
67a4f2b7
AO		 5118 contents + roff);
5119 continue;
5120 }
351f65ca 5121 else if (ELF32_R_TYPE (rel->r_info) == R_X86_64_TLSDESC_CALL)
67a4f2b7
AO		 5122 {
5123 /* GDesc -> LE transition.
5124 It's originally:
5125 call *(%rax)
5126 Turn it into:
142411ca 5127 xchg %ax,%ax. */
10efb593 5128 bfd_put_8 (output_bfd, 0x66, contents + roff);
67a4f2b7
AO		 5129 bfd_put_8 (output_bfd, 0x90, contents + roff + 1);
5130 continue;
5131 }
351f65ca 5132 else if (ELF32_R_TYPE (rel->r_info) == R_X86_64_GOTTPOFF)
bffbf940 5133 {
bffbf940 5134 /* IE->LE transition:
cf61b747 5135 For 64bit, originally it can be one of:
bffbf940
JJ		 5136 movq foo@gottpoff(%rip), %reg
5137 addq foo@gottpoff(%rip), %reg
5138 We change it into:
5139 movq $foo, %reg
5140 leaq foo(%reg), %reg
cf61b747
L		 5141 addq $foo, %reg.
5142 For 32bit, originally it can be one of:
5143 movq foo@gottpoff(%rip), %reg
5144 addl foo@gottpoff(%rip), %reg
5145 We change it into:
5146 movq $foo, %reg
5147 leal foo(%reg), %reg
5148 addl $foo, %reg. */
142411ca
L		 5149
5150 unsigned int val, type, reg;
5151
cf61b747
L		 5152 if (roff >= 3)
5153 val = bfd_get_8 (input_bfd, contents + roff - 3);
5154 else
5155 val = 0;
142411ca
L		 5156 type = bfd_get_8 (input_bfd, contents + roff - 2);
5157 reg = bfd_get_8 (input_bfd, contents + roff - 1);
bffbf940 5158 reg >>= 3;
bffbf940
JJ		 5159 if (type == 0x8b)
5160 {
5161 /* movq */
5162 if (val == 0x4c)
5163 bfd_put_8 (output_bfd, 0x49,
142411ca 5164 contents + roff - 3);
4a4c5f25
L		 5165 else if (!ABI_64_P (output_bfd) && val == 0x44)
5166 bfd_put_8 (output_bfd, 0x41,
5167 contents + roff - 3);
bffbf940 5168 bfd_put_8 (output_bfd, 0xc7,
142411ca 5169 contents + roff - 2);
bffbf940 5170 bfd_put_8 (output_bfd, 0xc0 | reg,
142411ca 5171 contents + roff - 1);
bffbf940
JJ		 5172 }
5173 else if (reg == 4)
5174 {
cf61b747
L		 5175 /* addq/addl -> addq/addl - addressing with %rsp/%r12
5176 is special */
bffbf940
JJ		 5177 if (val == 0x4c)
5178 bfd_put_8 (output_bfd, 0x49,
142411ca 5179 contents + roff - 3);
4a4c5f25
L		 5180 else if (!ABI_64_P (output_bfd) && val == 0x44)
5181 bfd_put_8 (output_bfd, 0x41,
5182 contents + roff - 3);
bffbf940 5183 bfd_put_8 (output_bfd, 0x81,
142411ca 5184 contents + roff - 2);
bffbf940 5185 bfd_put_8 (output_bfd, 0xc0 | reg,
142411ca 5186 contents + roff - 1);
bffbf940
JJ		 5187 }
5188 else
5189 {
cf61b747 5190 /* addq/addl -> leaq/leal */
bffbf940
JJ		 5191 if (val == 0x4c)
5192 bfd_put_8 (output_bfd, 0x4d,
142411ca 5193 contents + roff - 3);
4a4c5f25
L		 5194 else if (!ABI_64_P (output_bfd) && val == 0x44)
5195 bfd_put_8 (output_bfd, 0x45,
5196 contents + roff - 3);
bffbf940 5197 bfd_put_8 (output_bfd, 0x8d,
142411ca 5198 contents + roff - 2);
bffbf940 5199 bfd_put_8 (output_bfd, 0x80 | reg | (reg << 3),
142411ca 5200 contents + roff - 1);
bffbf940 5201 }
eb4ff4d6 5202 bfd_put_32 (output_bfd,
351f65ca 5203 elf_x86_64_tpoff (info, relocation),
142411ca 5204 contents + roff);
bffbf940
JJ		 5205 continue;
5206 }
142411ca
L		 5207 else
5208 BFD_ASSERT (FALSE);
bffbf940
JJ		 5209 }
5210
6de2ae4a 5211 if (htab->elf.sgot == NULL)
bffbf940
JJ		 5212 abort ();
5213
5214 if (h != NULL)
67a4f2b7
AO		 5215 {
5216 off = h->got.offset;
351f65ca 5217 offplt = elf_x86_64_hash_entry (h)->tlsdesc_got;
67a4f2b7 5218 }
bffbf940
JJ		 5219 else
5220 {
5221 if (local_got_offsets == NULL)
5222 abort ();
5223
5224 off = local_got_offsets[r_symndx];
67a4f2b7 5225 offplt = local_tlsdesc_gotents[r_symndx];
bffbf940
JJ		 5226 }
5227
5228 if ((off & 1) != 0)
5229 off &= ~1;
26e41594 5230 else
bffbf940
JJ		 5231 {
5232 Elf_Internal_Rela outrel;
bffbf940 5233 int dr_type, indx;
67a4f2b7 5234 asection *sreloc;
bffbf940 5235
6de2ae4a 5236 if (htab->elf.srelgot == NULL)
bffbf940
JJ		 5237 abort ();
5238
67a4f2b7
AO		 5239 indx = h && h->dynindx != -1 ? h->dynindx : 0;
5240
5241 if (GOT_TLS_GDESC_P (tls_type))
5242 {
351f65ca 5243 outrel.r_info = htab->r_info (indx, R_X86_64_TLSDESC);
67a4f2b7 5244 BFD_ASSERT (htab->sgotplt_jump_table_size + offplt
6de2ae4a
L		 5245 + 2 * GOT_ENTRY_SIZE <= htab->elf.sgotplt->size);
5246 outrel.r_offset = (htab->elf.sgotplt->output_section->vma
5247 + htab->elf.sgotplt->output_offset
67a4f2b7
AO		 5248 + offplt
5249 + htab->sgotplt_jump_table_size);
6de2ae4a 5250 sreloc = htab->elf.srelplt;
67a4f2b7 5251 if (indx == 0)
351f65ca 5252 outrel.r_addend = relocation - elf_x86_64_dtpoff_base (info);
67a4f2b7
AO		 5253 else
5254 outrel.r_addend = 0;
351f65ca 5255 elf_append_rela (output_bfd, sreloc, &outrel);
67a4f2b7
AO		 5256 }
5257
6de2ae4a 5258 sreloc = htab->elf.srelgot;
67a4f2b7 5259
6de2ae4a
L		 5260 outrel.r_offset = (htab->elf.sgot->output_section->vma
5261 + htab->elf.sgot->output_offset + off);
bffbf940 5262
67a4f2b7 5263 if (GOT_TLS_GD_P (tls_type))
bffbf940 5264 dr_type = R_X86_64_DTPMOD64;
67a4f2b7
AO		 5265 else if (GOT_TLS_GDESC_P (tls_type))
5266 goto dr_done;
bffbf940
JJ		 5267 else
5268 dr_type = R_X86_64_TPOFF64;
5269
6de2ae4a 5270 bfd_put_64 (output_bfd, 0, htab->elf.sgot->contents + off);
bffbf940 5271 outrel.r_addend = 0;
67a4f2b7
AO		 5272 if ((dr_type == R_X86_64_TPOFF64
5273 || dr_type == R_X86_64_TLSDESC) && indx == 0)
351f65ca
L		 5274 outrel.r_addend = relocation - elf_x86_64_dtpoff_base (info);
5275 outrel.r_info = htab->r_info (indx, dr_type);
bffbf940 5276
351f65ca 5277 elf_append_rela (output_bfd, sreloc, &outrel);
bffbf940 5278
67a4f2b7 5279 if (GOT_TLS_GD_P (tls_type))
bffbf940
JJ		 5280 {
5281 if (indx == 0)
5282 {
d40d037c 5283 BFD_ASSERT (! unresolved_reloc);
bffbf940 5284 bfd_put_64 (output_bfd,
351f65ca 5285 relocation - elf_x86_64_dtpoff_base (info),
6de2ae4a 5286 htab->elf.sgot->contents + off + GOT_ENTRY_SIZE);
bffbf940
JJ		 5287 }
5288 else
5289 {
5290 bfd_put_64 (output_bfd, 0,
6de2ae4a 5291 htab->elf.sgot->contents + off + GOT_ENTRY_SIZE);
351f65ca 5292 outrel.r_info = htab->r_info (indx,
bffbf940
JJ		 5293 R_X86_64_DTPOFF64);
5294 outrel.r_offset += GOT_ENTRY_SIZE;
351f65ca 5295 elf_append_rela (output_bfd, sreloc,
464d3bd4 5296 &outrel);
bffbf940
JJ		 5297 }
5298 }
5299
67a4f2b7 5300 dr_done:
bffbf940
JJ		 5301 if (h != NULL)
5302 h->got.offset |= 1;
5303 else
5304 local_got_offsets[r_symndx] |= 1;
5305 }
5306
67a4f2b7
AO		 5307 if (off >= (bfd_vma) -2
5308 && ! GOT_TLS_GDESC_P (tls_type))
bffbf940 5309 abort ();
351f65ca 5310 if (r_type == ELF32_R_TYPE (rel->r_info))
bffbf940 5311 {
67a4f2b7
AO		 5312 if (r_type == R_X86_64_GOTPC32_TLSDESC
5313 || r_type == R_X86_64_TLSDESC_CALL)
6de2ae4a
L		 5314 relocation = htab->elf.sgotplt->output_section->vma
5315 + htab->elf.sgotplt->output_offset
67a4f2b7
AO		 5316 + offplt + htab->sgotplt_jump_table_size;
5317 else
6de2ae4a
L		 5318 relocation = htab->elf.sgot->output_section->vma
5319 + htab->elf.sgot->output_offset + off;
b34976b6 5320 unresolved_reloc = FALSE;
bffbf940 5321 }
142411ca 5322 else
67a4f2b7 5323 {
142411ca 5324 bfd_vma roff = rel->r_offset;
67a4f2b7 5325
351f65ca 5326 if (ELF32_R_TYPE (rel->r_info) == R_X86_64_TLSGD)
142411ca 5327 {
52bc799a 5328 /* GD->IE transition. For 64bit, change
e2cbcd91
L		 5329 .byte 0x66; leaq foo@tlsgd(%rip), %rdi
5330 .word 0x6666; rex64; call __tls_get_addr@PLT
5331 or
5332 .byte 0x66; leaq foo@tlsgd(%rip), %rdi
5333 .byte 0x66; rex64
5334 call *__tls_get_addr@GOTPCREL(%rip
5335 which may be converted to
5336 addr32 call __tls_get_addr
52bc799a 5337 into:
e2cbcd91
L		 5338 movq %fs:0, %rax
5339 addq foo@gottpoff(%rip), %rax
52bc799a 5340 For 32bit, change
e2cbcd91
L		 5341 leaq foo@tlsgd(%rip), %rdi
5342 .word 0x6666; rex64; call __tls_get_addr@PLT
5343 or
5344 leaq foo@tlsgd(%rip), %rdi
5345 .byte 0x66; rex64;
5346 call *__tls_get_addr@GOTPCREL(%rip)
5347 which may be converted to
5348 addr32 call __tls_get_addr
52bc799a 5349 into:
e2cbcd91
L		 5350 movl %fs:0, %eax
5351 addq foo@gottpoff(%rip), %rax
5c98a14e 5352 For largepic, change:
e2cbcd91
L		 5353 leaq foo@tlsgd(%rip), %rdi
5354 movabsq $__tls_get_addr@pltoff, %rax
5355 addq %r15, %rax
5356 call *%rax
5c98a14e 5357 into:
e2cbcd91
L		 5358 movq %fs:0, %rax
5359 addq foo@gottpoff(%rax), %rax
5360 nopw 0x0(%rax,%rax,1) */
5c98a14e 5361 int largepic = 0;
e2cbcd91 5362 if (ABI_64_P (output_bfd))
5c98a14e 5363 {
e2cbcd91
L		 5364 if (contents[roff + 5] == 0xb8)
5365 {
5366 memcpy (contents + roff - 3,
5367 "\x64\x48\x8b\x04\x25\0\0\0\0\x48\x03\x05"
5368 "\0\0\0\0\x66\x0f\x1f\x44\0", 22);
5369 largepic = 1;
5370 }
5371 else
5372 memcpy (contents + roff - 4,
5373 "\x64\x48\x8b\x04\x25\0\0\0\0\x48\x03\x05\0\0\0",
5374 16);
5c98a14e 5375 }
52bc799a
L		 5376 else
5377 memcpy (contents + roff - 3,
5378 "\x64\x8b\x04\x25\0\0\0\0\x48\x03\x05\0\0\0",
5379 15);
142411ca 5380
6de2ae4a
L		 5381 relocation = (htab->elf.sgot->output_section->vma
5382 + htab->elf.sgot->output_offset + off
142411ca 5383 - roff
5c98a14e 5384 - largepic
142411ca
L		 5385 - input_section->output_section->vma
5386 - input_section->output_offset
5387 - 12);
5388 bfd_put_32 (output_bfd, relocation,
5c98a14e
JJ		 5389 contents + roff + 8 + largepic);
5390 /* Skip R_X86_64_PLT32/R_X86_64_PLTOFF64. */
142411ca 5391 rel++;
60f2e42e 5392 wrel++;
142411ca
L		 5393 continue;
5394 }
351f65ca 5395 else if (ELF32_R_TYPE (rel->r_info) == R_X86_64_GOTPC32_TLSDESC)
142411ca
L		 5396 {
5397 /* GDesc -> IE transition.
5398 It's originally something like:
5399 leaq x@tlsdesc(%rip), %rax
67a4f2b7 5400
142411ca 5401 Change it to:
c9736ba0 5402 movq x@gottpoff(%rip), %rax # before xchg %ax,%ax. */
67a4f2b7 5403
142411ca
L		 5404 /* Now modify the instruction as appropriate. To
5405 turn a leaq into a movq in the form we use it, it
5406 suffices to change the second byte from 0x8d to
5407 0x8b. */
5408 bfd_put_8 (output_bfd, 0x8b, contents + roff - 2);
5409
5410 bfd_put_32 (output_bfd,
6de2ae4a
L		 5411 htab->elf.sgot->output_section->vma
5412 + htab->elf.sgot->output_offset + off
142411ca
L		 5413 - rel->r_offset
5414 - input_section->output_section->vma
5415 - input_section->output_offset
5416 - 4,
5417 contents + roff);
5418 continue;
5419 }
351f65ca 5420 else if (ELF32_R_TYPE (rel->r_info) == R_X86_64_TLSDESC_CALL)
142411ca
L		 5421 {
5422 /* GDesc -> IE transition.
5423 It's originally:
5424 call *(%rax)
5425
5426 Change it to:
c9736ba0 5427 xchg %ax, %ax. */
142411ca 5428
142411ca
L		 5429 bfd_put_8 (output_bfd, 0x66, contents + roff);
5430 bfd_put_8 (output_bfd, 0x90, contents + roff + 1);
5431 continue;
5432 }
5433 else
5434 BFD_ASSERT (FALSE);
67a4f2b7 5435 }
bffbf940
JJ		 5436 break;
5437
5438 case R_X86_64_TLSLD:
351f65ca
L		 5439 if (! elf_x86_64_tls_transition (info, input_bfd,
5440 input_section, contents,
5441 symtab_hdr, sym_hashes,
bedfd056
L		 5442 &r_type, GOT_UNKNOWN, rel,
5443 relend, h, r_symndx, TRUE))
142411ca 5444 return FALSE;
a3fadc9a 5445
142411ca
L		 5446 if (r_type != R_X86_64_TLSLD)
5447 {
bffbf940 5448 /* LD->LE transition:
e2cbcd91
L		 5449 leaq foo@tlsld(%rip), %rdi
5450 call __tls_get_addr@PLT
5451 For 64bit, we change it into:
5452 .word 0x6666; .byte 0x66; movq %fs:0, %rax
5453 For 32bit, we change it into:
5454 nopl 0x0(%rax); movl %fs:0, %eax
5455 Or
5456 leaq foo@tlsld(%rip), %rdi;
5457 call *__tls_get_addr@GOTPCREL(%rip)
5458 which may be converted to
5459 addr32 call __tls_get_addr
52bc799a 5460 For 64bit, we change it into:
e2cbcd91 5461 .word 0x6666; .word 0x6666; movq %fs:0, %rax
52bc799a 5462 For 32bit, we change it into:
e2cbcd91 5463 nopw 0x0(%rax); movl %fs:0, %eax
5c98a14e 5464 For largepic, change:
e2cbcd91
L		 5465 leaq foo@tlsgd(%rip), %rdi
5466 movabsq $__tls_get_addr@pltoff, %rax
5467 addq %rbx, %rax
5468 call *%rax
5469 into
5470 data16 data16 data16 nopw %cs:0x0(%rax,%rax,1)
5471 movq %fs:0, %eax */
142411ca
L		 5472
5473 BFD_ASSERT (r_type == R_X86_64_TPOFF32);
e2cbcd91
L		 5474 if (ABI_64_P (output_bfd))
5475 {
5476 if (contents[rel->r_offset + 5] == 0xb8)
5477 memcpy (contents + rel->r_offset - 3,
5478 "\x66\x66\x66\x66\x2e\x0f\x1f\x84\0\0\0\0\0"
5479 "\x64\x48\x8b\x04\x25\0\0\0", 22);
5480 else if (contents[rel->r_offset + 4] == 0xff
5481 || contents[rel->r_offset + 4] == 0x67)
5482 memcpy (contents + rel->r_offset - 3,
5483 "\x66\x66\x66\x66\x64\x48\x8b\x04\x25\0\0\0",
5484 13);
5485 else
5486 memcpy (contents + rel->r_offset - 3,
5487 "\x66\x66\x66\x64\x48\x8b\x04\x25\0\0\0", 12);
5488 }
52bc799a 5489 else
e2cbcd91
L		 5490 {
5491 if (contents[rel->r_offset + 4] == 0xff)
5492 memcpy (contents + rel->r_offset - 3,
5493 "\x66\x0f\x1f\x40\x00\x64\x8b\x04\x25\0\0\0",
5494 13);
5495 else
5496 memcpy (contents + rel->r_offset - 3,
5497 "\x0f\x1f\x40\x00\x64\x8b\x04\x25\0\0\0", 12);
5498 }
5499 /* Skip R_X86_64_PC32, R_X86_64_PLT32, R_X86_64_GOTPCRELX
5500 and R_X86_64_PLTOFF64. */
bffbf940 5501 rel++;
60f2e42e 5502 wrel++;
bffbf940
JJ		 5503 continue;
5504 }
5505
6de2ae4a 5506 if (htab->elf.sgot == NULL)
bffbf940
JJ		 5507 abort ();
5508
5509 off = htab->tls_ld_got.offset;
5510 if (off & 1)
5511 off &= ~1;
5512 else
5513 {
5514 Elf_Internal_Rela outrel;
bffbf940 5515
6de2ae4a 5516 if (htab->elf.srelgot == NULL)
bffbf940
JJ		 5517 abort ();
5518
6de2ae4a
L		 5519 outrel.r_offset = (htab->elf.sgot->output_section->vma
5520 + htab->elf.sgot->output_offset + off);
bffbf940
JJ		 5521
5522 bfd_put_64 (output_bfd, 0,
6de2ae4a 5523 htab->elf.sgot->contents + off);
bffbf940 5524 bfd_put_64 (output_bfd, 0,
6de2ae4a 5525 htab->elf.sgot->contents + off + GOT_ENTRY_SIZE);
351f65ca 5526 outrel.r_info = htab->r_info (0, R_X86_64_DTPMOD64);
bffbf940 5527 outrel.r_addend = 0;
351f65ca 5528 elf_append_rela (output_bfd, htab->elf.srelgot,
464d3bd4 5529 &outrel);
bffbf940
JJ		 5530 htab->tls_ld_got.offset |= 1;
5531 }
6de2ae4a
L		 5532 relocation = htab->elf.sgot->output_section->vma
5533 + htab->elf.sgot->output_offset + off;
b34976b6 5534 unresolved_reloc = FALSE;
bffbf940
JJ		 5535 break;
5536
5537 case R_X86_64_DTPOFF32:
0e1862bb
L		 5538 if (!bfd_link_executable (info)
5539 || (input_section->flags & SEC_CODE) == 0)
351f65ca 5540 relocation -= elf_x86_64_dtpoff_base (info);
bffbf940 5541 else
351f65ca 5542 relocation = elf_x86_64_tpoff (info, relocation);
bffbf940
JJ		 5543 break;
5544
5545 case R_X86_64_TPOFF32:
6769d501 5546 case R_X86_64_TPOFF64:
0e1862bb 5547 BFD_ASSERT (bfd_link_executable (info));
351f65ca 5548 relocation = elf_x86_64_tpoff (info, relocation);
bffbf940
JJ		 5549 break;
5550
a69ed7f7
L		 5551 case R_X86_64_DTPOFF64:
5552 BFD_ASSERT ((input_section->flags & SEC_CODE) == 0);
5553 relocation -= elf_x86_64_dtpoff_base (info);
5554 break;
5555
70256ad8
AJ		 5556 default:
5557 break;
5558 }
8d88c4ca 5559
239e1f3a
AM		 5560 /* Dynamic relocs are not propagated for SEC_DEBUGGING sections
5561 because such sections are not SEC_ALLOC and thus ld.so will
5562 not process them. */
c434dee6 5563 if (unresolved_reloc
239e1f3a 5564 && !((input_section->flags & SEC_DEBUGGING) != 0
1d5316ab
AM		 5565 && h->def_dynamic)
5566 && _bfd_elf_section_offset (output_bfd, info, input_section,
5567 rel->r_offset) != (bfd_vma) -1)
a040981f 5568 {
4eca0228 5569 _bfd_error_handler
695344c0 5570 /* xgettext:c-format */
a040981f
L		 5571 (_("%B(%A+0x%lx): unresolvable %s relocation against symbol `%s'"),
5572 input_bfd,
5573 input_section,
5574 (long) rel->r_offset,
5575 howto->name,
5576 h->root.root.string);
5577 return FALSE;
5578 }
c434dee6 5579
cbe950e9 5580do_relocation:
8d88c4ca 5581 r = _bfd_final_link_relocate (howto, input_bfd, input_section,
c434dee6
AJ		 5582 contents, rel->r_offset,
5583 relocation, rel->r_addend);
8d88c4ca 5584
62d78908 5585check_relocation_error:
8d88c4ca 5586 if (r != bfd_reloc_ok)
8da6118f 5587 {
c434dee6
AJ		 5588 const char *name;
5589
5590 if (h != NULL)
5591 name = h->root.root.string;
5592 else
8da6118f 5593 {
c434dee6
AJ		 5594 name = bfd_elf_string_from_elf_section (input_bfd,
5595 symtab_hdr->sh_link,
5596 sym->st_name);
5597 if (name == NULL)
b34976b6 5598 return FALSE;
c434dee6
AJ		 5599 if (*name == '\0')
5600 name = bfd_section_name (input_bfd, sec);
5601 }
5602
5603 if (r == bfd_reloc_overflow)
1a72702b
AM		 5604 (*info->callbacks->reloc_overflow)
5605 (info, (h ? &h->root : NULL), name, howto->name,
5606 (bfd_vma) 0, input_bfd, input_section, rel->r_offset);
c434dee6
AJ		 5607 else
5608 {
4eca0228 5609 _bfd_error_handler
695344c0 5610 /* xgettext:c-format */
bb95161d 5611 (_("%B(%A+0x%lx): reloc against `%s': error %d"),
d003868e 5612 input_bfd, input_section,
c434dee6 5613 (long) rel->r_offset, name, (int) r);
b34976b6 5614 return FALSE;
8da6118f
KH		 5615 }
5616 }
60f2e42e
L		 5617
5618 if (wrel != rel)
5619 *wrel = *rel;
5620 }
5621
5622 if (wrel != rel)
5623 {
5624 Elf_Internal_Shdr *rel_hdr;
5625 size_t deleted = rel - wrel;
5626
5627 rel_hdr = _bfd_elf_single_rel_hdr (input_section->output_section);
5628 rel_hdr->sh_size -= rel_hdr->sh_entsize * deleted;
5629 if (rel_hdr->sh_size == 0)
5630 {
5631 /* It is too late to remove an empty reloc section. Leave
5632 one NONE reloc.
5633 ??? What is wrong with an empty section??? */
5634 rel_hdr->sh_size = rel_hdr->sh_entsize;
5635 deleted -= 1;
5636 }
5637 rel_hdr = _bfd_elf_single_rel_hdr (input_section);
5638 rel_hdr->sh_size -= rel_hdr->sh_entsize * deleted;
5639 input_section->reloc_count -= deleted;
8d88c4ca 5640 }
70256ad8 5641
b34976b6 5642 return TRUE;
70256ad8
AJ		 5643}
5644
5645/* Finish up dynamic symbol handling. We set the contents of various
5646 dynamic sections here. */
5647
b34976b6 5648static bfd_boolean
351f65ca
L		 5649elf_x86_64_finish_dynamic_symbol (bfd *output_bfd,
5650 struct bfd_link_info *info,
5651 struct elf_link_hash_entry *h,
aec6b87e 5652 Elf_Internal_Sym *sym)
70256ad8 5653{
351f65ca 5654 struct elf_x86_64_link_hash_table *htab;
f2c29a16 5655 bfd_boolean use_plt_second;
dd7e64d4 5656 struct elf_x86_64_link_hash_entry *eh;
aec6b87e 5657 bfd_boolean local_undefweak;
70256ad8 5658
351f65ca 5659 htab = elf_x86_64_hash_table (info);
4dfe6ac6
NC		 5660 if (htab == NULL)
5661 return FALSE;
70256ad8 5662
f2c29a16
L		 5663 /* Use the second PLT section only if there is .plt section. */
5664 use_plt_second = htab->elf.splt != NULL && htab->plt_second != NULL;
0ff2b86e 5665
dd7e64d4 5666 eh = (struct elf_x86_64_link_hash_entry *) h;
9e9821dd
L		 5667 if (eh->no_finish_dynamic_symbol)
5668 abort ();
dd7e64d4 5669
aec6b87e
L		 5670 /* We keep PLT/GOT entries without dynamic PLT/GOT relocations for
5671 resolved undefined weak symbols in executable so that their
5672 references have value 0 at run-time. */
e62b9723
L		 5673 local_undefweak = UNDEFINED_WEAK_RESOLVED_TO_ZERO (info,
5674 eh->has_got_reloc,
5675 eh);
aec6b87e 5676
70256ad8
AJ		 5677 if (h->plt.offset != (bfd_vma) -1)
5678 {
70256ad8 5679 bfd_vma plt_index;
38b12349 5680 bfd_vma got_offset, plt_offset;
70256ad8 5681 Elf_Internal_Rela rela;
947216bf 5682 bfd_byte *loc;
0ff2b86e 5683 asection *plt, *gotplt, *relplt, *resolved_plt;
351f65ca 5684 const struct elf_backend_data *bed;
5974eba6 5685 bfd_vma plt_got_pcrel_offset;
cbe950e9
L		 5686
5687 /* When building a static executable, use .iplt, .igot.plt and
5688 .rela.iplt sections for STT_GNU_IFUNC symbols. */
6de2ae4a 5689 if (htab->elf.splt != NULL)
cbe950e9 5690 {
6de2ae4a
L		 5691 plt = htab->elf.splt;
5692 gotplt = htab->elf.sgotplt;
5693 relplt = htab->elf.srelplt;
cbe950e9
L		 5694 }
5695 else
5696 {
6de2ae4a
L		 5697 plt = htab->elf.iplt;
5698 gotplt = htab->elf.igotplt;
5699 relplt = htab->elf.irelplt;
cbe950e9 5700 }
70256ad8
AJ		 5701
5702 /* This symbol has an entry in the procedure linkage table. Set
407443a3 5703 it up. */
cbe950e9 5704 if ((h->dynindx == -1
aec6b87e 5705 && !local_undefweak
0e1862bb 5706 && !((h->forced_local || bfd_link_executable (info))
cbe950e9
L		 5707 && h->def_regular
5708 && h->type == STT_GNU_IFUNC))
5709 || plt == NULL
5710 || gotplt == NULL
5711 || relplt == NULL)
cec7f46a 5712 abort ();
70256ad8
AJ		 5713
5714 /* Get the index in the procedure linkage table which
5715 corresponds to this symbol. This is the index of this symbol
5716 in all the symbols for which we are making plt entries. The
cbe950e9 5717 first entry in the procedure linkage table is reserved.
6bbec505 5718
cbe950e9 5719 Get the offset into the .got table of the entry that
407443a3 5720 corresponds to this function. Each .got entry is GOT_ENTRY_SIZE
cbe950e9
L		 5721 bytes. The first three are reserved for the dynamic linker.
5722
5723 For static executables, we don't reserve anything. */
5724
6de2ae4a 5725 if (plt == htab->elf.splt)
cbe950e9 5726 {
38b12349
L		 5727 got_offset = (h->plt.offset / htab->plt.plt_entry_size
5728 - htab->plt.has_plt0);
e1f98742 5729 got_offset = (got_offset + 3) * GOT_ENTRY_SIZE;
cbe950e9
L		 5730 }
5731 else
5732 {
38b12349 5733 got_offset = h->plt.offset / htab->plt.plt_entry_size;
e1f98742 5734 got_offset = got_offset * GOT_ENTRY_SIZE;
cbe950e9 5735 }
70256ad8 5736
38b12349
L		 5737 /* Fill in the entry in the procedure linkage table. */
5738 memcpy (plt->contents + h->plt.offset, htab->plt.plt_entry,
5739 htab->plt.plt_entry_size);
f2c29a16 5740 if (use_plt_second)
0ff2b86e 5741 {
f2c29a16 5742 memcpy (htab->plt_second->contents + eh->plt_second.offset,
38b12349
L		 5743 htab->non_lazy_plt->plt_entry,
5744 htab->non_lazy_plt->plt_entry_size);
0ff2b86e 5745
f2c29a16
L		 5746 resolved_plt = htab->plt_second;
5747 plt_offset = eh->plt_second.offset;
0ff2b86e
L		 5748 }
5749 else
5750 {
0ff2b86e
L		 5751 resolved_plt = plt;
5752 plt_offset = h->plt.offset;
5753 }
eed180f8
RM		 5754
5755 /* Insert the relocation positions of the plt section. */
5756
5757 /* Put offset the PC-relative instruction referring to the GOT entry,
5758 subtracting the size of that instruction. */
ab7fede8
L		 5759 plt_got_pcrel_offset = (gotplt->output_section->vma
5760 + gotplt->output_offset
5761 + got_offset
5762 - resolved_plt->output_section->vma
5763 - resolved_plt->output_offset
5764 - plt_offset
38b12349 5765 - htab->plt.plt_got_insn_size);
ab7fede8
L		 5766
5767 /* Check PC-relative offset overflow in PLT entry. */
5974eba6 5768 if ((plt_got_pcrel_offset + 0x80000000) > 0xffffffff)
695344c0 5769 /* xgettext:c-format */
ab7fede8
L		 5770 info->callbacks->einfo (_("%F%B: PC-relative offset overflow in PLT entry for `%s'\n"),
5771 output_bfd, h->root.root.string);
5772
5773 bfd_put_32 (output_bfd, plt_got_pcrel_offset,
38b12349
L		 5774 (resolved_plt->contents + plt_offset
5775 + htab->plt.plt_got_offset));
cbe950e9 5776
653165cc 5777 /* Fill in the entry in the global offset table, initially this
aec6b87e
L		 5778 points to the second part of the PLT entry. Leave the entry
5779 as zero for undefined weak symbol in PIE. No PLT relocation
5780 against undefined weak symbol in PIE. */
5781 if (!local_undefweak)
cbe950e9 5782 {
38b12349
L		 5783 if (htab->plt.has_plt0)
5784 bfd_put_64 (output_bfd, (plt->output_section->vma
5785 + plt->output_offset
5786 + h->plt.offset
5787 + htab->lazy_plt->plt_lazy_offset),
5788 gotplt->contents + got_offset);
aec6b87e
L		 5789
5790 /* Fill in the entry in the .rela.plt section. */
5791 rela.r_offset = (gotplt->output_section->vma
5792 + gotplt->output_offset
5793 + got_offset);
5794 if (h->dynindx == -1
5795 || ((bfd_link_executable (info)
5796 || ELF_ST_VISIBILITY (h->other) != STV_DEFAULT)
5797 && h->def_regular
5798 && h->type == STT_GNU_IFUNC))
5799 {
6322e5c5
L		 5800 info->callbacks->minfo (_("Local IFUNC function `%s' in %B\n"),
5801 h->root.root.string,
5802 h->root.u.def.section->owner);
5803
aec6b87e
L		 5804 /* If an STT_GNU_IFUNC symbol is locally defined, generate
5805 R_X86_64_IRELATIVE instead of R_X86_64_JUMP_SLOT. */
5806 rela.r_info = htab->r_info (0, R_X86_64_IRELATIVE);
5807 rela.r_addend = (h->root.u.def.value
5808 + h->root.u.def.section->output_section->vma
5809 + h->root.u.def.section->output_offset);
5810 /* R_X86_64_IRELATIVE comes last. */
5811 plt_index = htab->next_irelative_index--;
5812 }
5813 else
5814 {
5815 rela.r_info = htab->r_info (h->dynindx, R_X86_64_JUMP_SLOT);
5816 rela.r_addend = 0;
5817 plt_index = htab->next_jump_slot_index++;
5818 }
e1f98742 5819
38b12349
L		 5820 /* Don't fill the second and third slots in PLT entry for
5821 static executables nor without PLT0. */
5822 if (plt == htab->elf.splt && htab->plt.has_plt0)
aec6b87e 5823 {
38b12349
L		 5824 bfd_vma plt0_offset
5825 = h->plt.offset + htab->lazy_plt->plt_plt_insn_end;
aec6b87e
L		 5826
5827 /* Put relocation index. */
5828 bfd_put_32 (output_bfd, plt_index,
5829 (plt->contents + h->plt.offset
38b12349 5830 + htab->lazy_plt->plt_reloc_offset));
aec6b87e
L		 5831
5832 /* Put offset for jmp .PLT0 and check for overflow. We don't
5833 check relocation index for overflow since branch displacement
5834 will overflow first. */
5835 if (plt0_offset > 0x80000000)
695344c0 5836 /* xgettext:c-format */
aec6b87e
L		 5837 info->callbacks->einfo (_("%F%B: branch displacement overflow in PLT entry for `%s'\n"),
5838 output_bfd, h->root.root.string);
5839 bfd_put_32 (output_bfd, - plt0_offset,
38b12349
L		 5840 (plt->contents + h->plt.offset
5841 + htab->lazy_plt->plt_plt_offset));
aec6b87e 5842 }
351f65ca 5843
aec6b87e
L		 5844 bed = get_elf_backend_data (output_bfd);
5845 loc = relplt->contents + plt_index * bed->s->sizeof_rela;
5846 bed->s->swap_reloca_out (output_bfd, &rela, loc);
5847 }
dd7e64d4
L		 5848 }
5849 else if (eh->plt_got.offset != (bfd_vma) -1)
5850 {
38b12349 5851 bfd_vma got_offset, plt_offset;
dd7e64d4
L		 5852 asection *plt, *got;
5853 bfd_boolean got_after_plt;
5854 int32_t got_pcrel_offset;
dd7e64d4
L		 5855
5856 /* Set the entry in the GOT procedure linkage table. */
5857 plt = htab->plt_got;
5858 got = htab->elf.sgot;
5859 got_offset = h->got.offset;
5860
5861 if (got_offset == (bfd_vma) -1
e492d2f8 5862 || (h->type == STT_GNU_IFUNC && h->def_regular)
dd7e64d4
L		 5863 || plt == NULL
5864 || got == NULL)
5865 abort ();
70256ad8 5866
38b12349 5867 /* Use the non-lazy PLT entry template for the GOT PLT since they
dd7e64d4 5868 are the identical. */
dd7e64d4
L		 5869 /* Fill in the entry in the GOT procedure linkage table. */
5870 plt_offset = eh->plt_got.offset;
5871 memcpy (plt->contents + plt_offset,
38b12349
L		 5872 htab->non_lazy_plt->plt_entry,
5873 htab->non_lazy_plt->plt_entry_size);
dd7e64d4
L		 5874
5875 /* Put offset the PC-relative instruction referring to the GOT
5876 entry, subtracting the size of that instruction. */
5877 got_pcrel_offset = (got->output_section->vma
5878 + got->output_offset
5879 + got_offset
5880 - plt->output_section->vma
5881 - plt->output_offset
5882 - plt_offset
38b12349 5883 - htab->non_lazy_plt->plt_got_insn_size);
dd7e64d4
L		 5884
5885 /* Check PC-relative offset overflow in GOT PLT entry. */
5886 got_after_plt = got->output_section->vma > plt->output_section->vma;
5887 if ((got_after_plt && got_pcrel_offset < 0)
5888 || (!got_after_plt && got_pcrel_offset > 0))
695344c0 5889 /* xgettext:c-format */
dd7e64d4
L		 5890 info->callbacks->einfo (_("%F%B: PC-relative offset overflow in GOT PLT entry for `%s'\n"),
5891 output_bfd, h->root.root.string);
5892
5893 bfd_put_32 (output_bfd, got_pcrel_offset,
38b12349
L		 5894 (plt->contents + plt_offset
5895 + htab->non_lazy_plt->plt_got_offset));
dd7e64d4
L		 5896 }
5897
aec6b87e
L		 5898 if (!local_undefweak
5899 && !h->def_regular
dd7e64d4
L		 5900 && (h->plt.offset != (bfd_vma) -1
5901 || eh->plt_got.offset != (bfd_vma) -1))
5902 {
5903 /* Mark the symbol as undefined, rather than as defined in
5904 the .plt section. Leave the value if there were any
5905 relocations where pointer equality matters (this is a clue
5906 for the dynamic linker, to make function pointer
5907 comparisons work between an application and shared
5908 library), otherwise set it to zero. If a function is only
5909 called from a binary, there is no need to slow down
5910 shared libraries because of that. */
5911 sym->st_shndx = SHN_UNDEF;
5912 if (!h->pointer_equality_needed)
5913 sym->st_value = 0;
70256ad8
AJ		 5914 }
5915
aec6b87e
L		 5916 /* Don't generate dynamic GOT relocation against undefined weak
5917 symbol in executable. */
bffbf940 5918 if (h->got.offset != (bfd_vma) -1
351f65ca 5919 && ! GOT_TLS_GD_ANY_P (elf_x86_64_hash_entry (h)->tls_type)
aec6b87e
L		 5920 && elf_x86_64_hash_entry (h)->tls_type != GOT_TLS_IE
5921 && !local_undefweak)
053579d7 5922 {
053579d7 5923 Elf_Internal_Rela rela;
233cc9c1 5924 asection *relgot = htab->elf.srelgot;
053579d7
AJ		 5925
5926 /* This symbol has an entry in the global offset table. Set it
bffbf940 5927 up. */
6de2ae4a 5928 if (htab->elf.sgot == NULL || htab->elf.srelgot == NULL)
c434dee6 5929 abort ();
053579d7 5930
6de2ae4a
L		 5931 rela.r_offset = (htab->elf.sgot->output_section->vma
5932 + htab->elf.sgot->output_offset
dc810e39 5933 + (h->got.offset &~ (bfd_vma) 1));
053579d7
AJ		 5934
5935 /* If this is a static link, or it is a -Bsymbolic link and the
5936 symbol is defined locally or was forced to be local because
5937 of a version file, we just want to emit a RELATIVE reloc.
5938 The entry in the global offset table will already have been
5939 initialized in the relocate_section function. */
710ab287 5940 if (h->def_regular
0018b0a3
L		 5941 && h->type == STT_GNU_IFUNC)
5942 {
233cc9c1
L		 5943 if (h->plt.offset == (bfd_vma) -1)
5944 {
5945 /* STT_GNU_IFUNC is referenced without PLT. */
5946 if (htab->elf.splt == NULL)
5947 {
5948 /* use .rel[a].iplt section to store .got relocations
5949 in static executable. */
5950 relgot = htab->elf.irelplt;
5951 }
5952 if (SYMBOL_REFERENCES_LOCAL (info, h))
5953 {
6322e5c5
L		 5954 info->callbacks->minfo (_("Local IFUNC function `%s' in %B\n"),
5955 output_bfd,
5956 h->root.root.string,
5957 h->root.u.def.section->owner);
5958
233cc9c1
L		 5959 rela.r_info = htab->r_info (0,
5960 R_X86_64_IRELATIVE);
5961 rela.r_addend = (h->root.u.def.value
5962 + h->root.u.def.section->output_section->vma
5963 + h->root.u.def.section->output_offset);
5964 }
5965 else
5966 goto do_glob_dat;
5967 }
5968 else if (bfd_link_pic (info))
710ab287
L		 5969 {
5970 /* Generate R_X86_64_GLOB_DAT. */
5971 goto do_glob_dat;
5972 }
5973 else
5974 {
90d60710 5975 asection *plt;
aab82f4c 5976 bfd_vma plt_offset;
90d60710 5977
710ab287
L		 5978 if (!h->pointer_equality_needed)
5979 abort ();
5980
5981 /* For non-shared object, we can't use .got.plt, which
5982 contains the real function addres if we need pointer
5983 equality. We load the GOT entry with the PLT entry. */
f2c29a16 5984 if (htab->plt_second != NULL)
aab82f4c 5985 {
f2c29a16
L		 5986 plt = htab->plt_second;
5987 plt_offset = eh->plt_second.offset;
aab82f4c
L		 5988 }
5989 else
5990 {
5991 plt = htab->elf.splt ? htab->elf.splt : htab->elf.iplt;
5992 plt_offset = h->plt.offset;
5993 }
710ab287
L		 5994 bfd_put_64 (output_bfd, (plt->output_section->vma
5995 + plt->output_offset
aab82f4c 5996 + plt_offset),
6de2ae4a 5997 htab->elf.sgot->contents + h->got.offset);
710ab287
L		 5998 return TRUE;
5999 }
0018b0a3 6000 }
0e1862bb 6001 else if (bfd_link_pic (info)
0018b0a3 6002 && SYMBOL_REFERENCES_LOCAL (info, h))
053579d7 6003 {
41bed6dd
L		 6004 if (!h->def_regular)
6005 return FALSE;
cc78d0af 6006 BFD_ASSERT((h->got.offset & 1) != 0);
351f65ca 6007 rela.r_info = htab->r_info (0, R_X86_64_RELATIVE);
053579d7
AJ		 6008 rela.r_addend = (h->root.u.def.value
6009 + h->root.u.def.section->output_section->vma
6010 + h->root.u.def.section->output_offset);
6011 }
6012 else
6013 {
6014 BFD_ASSERT((h->got.offset & 1) == 0);
710ab287 6015do_glob_dat:
c434dee6 6016 bfd_put_64 (output_bfd, (bfd_vma) 0,
6de2ae4a 6017 htab->elf.sgot->contents + h->got.offset);
351f65ca 6018 rela.r_info = htab->r_info (h->dynindx, R_X86_64_GLOB_DAT);
053579d7
AJ		 6019 rela.r_addend = 0;
6020 }
6021
233cc9c1 6022 elf_append_rela (output_bfd, relgot, &rela);
053579d7
AJ		 6023 }
6024
f5385ebf 6025 if (h->needs_copy)
70256ad8 6026 {
70256ad8 6027 Elf_Internal_Rela rela;
5474d94f 6028 asection *s;
70256ad8
AJ		 6029
6030 /* This symbol needs a copy reloc. Set it up. */
6031
c434dee6
AJ		 6032 if (h->dynindx == -1
6033 || (h->root.type != bfd_link_hash_defined
6034 && h->root.type != bfd_link_hash_defweak)
5474d94f
AM		 6035 || htab->elf.srelbss == NULL
6036 || htab->elf.sreldynrelro == NULL)
c434dee6 6037 abort ();
70256ad8
AJ		 6038
6039 rela.r_offset = (h->root.u.def.value
6040 + h->root.u.def.section->output_section->vma
6041 + h->root.u.def.section->output_offset);
351f65ca 6042 rela.r_info = htab->r_info (h->dynindx, R_X86_64_COPY);
70256ad8 6043 rela.r_addend = 0;
afbf7e8e 6044 if (h->root.u.def.section == htab->elf.sdynrelro)
5474d94f
AM		 6045 s = htab->elf.sreldynrelro;
6046 else
6047 s = htab->elf.srelbss;
6048 elf_append_rela (output_bfd, s, &rela);
70256ad8
AJ		 6049 }
6050
b34976b6 6051 return TRUE;
70256ad8
AJ		 6052}
6053
c25bc9fc
L		 6054/* Finish up local dynamic symbol handling. We set the contents of
6055 various dynamic sections here. */
6056
6057static bfd_boolean
351f65ca 6058elf_x86_64_finish_local_dynamic_symbol (void **slot, void *inf)
c25bc9fc
L		 6059{
6060 struct elf_link_hash_entry *h
6061 = (struct elf_link_hash_entry *) *slot;
6062 struct bfd_link_info *info
eed180f8 6063 = (struct bfd_link_info *) inf;
c25bc9fc 6064
351f65ca 6065 return elf_x86_64_finish_dynamic_symbol (info->output_bfd,
c25bc9fc
L		 6066 info, h, NULL);
6067}
6068
aec6b87e
L		 6069/* Finish up undefined weak symbol handling in PIE. Fill its PLT entry
6070 here since undefined weak symbol may not be dynamic and may not be
6071 called for elf_x86_64_finish_dynamic_symbol. */
6072
6073static bfd_boolean
6074elf_x86_64_pie_finish_undefweak_symbol (struct bfd_hash_entry *bh,
6075 void *inf)
6076{
6077 struct elf_link_hash_entry *h = (struct elf_link_hash_entry *) bh;
6078 struct bfd_link_info *info = (struct bfd_link_info *) inf;
6079
6080 if (h->root.type != bfd_link_hash_undefweak
6081 || h->dynindx != -1)
6082 return TRUE;
6083
6084 return elf_x86_64_finish_dynamic_symbol (info->output_bfd,
6085 info, h, NULL);
6086}
6087
c434dee6
AJ		 6088/* Used to decide how to sort relocs in an optimal manner for the
6089 dynamic linker, before writing them out. */
6090
6091static enum elf_reloc_type_class
cae1fbbb 6092elf_x86_64_reloc_type_class (const struct bfd_link_info *info,
7e612e98
AM		 6093 const asection *rel_sec ATTRIBUTE_UNUSED,
6094 const Elf_Internal_Rela *rela)
c434dee6 6095{
cae1fbbb
L		 6096 bfd *abfd = info->output_bfd;
6097 const struct elf_backend_data *bed = get_elf_backend_data (abfd);
6098 struct elf_x86_64_link_hash_table *htab = elf_x86_64_hash_table (info);
cae1fbbb 6099
d9e3b590
L		 6100 if (htab->elf.dynsym != NULL
6101 && htab->elf.dynsym->contents != NULL)
6102 {
6103 /* Check relocation against STT_GNU_IFUNC symbol if there are
6104 dynamic symbols. */
6105 unsigned long r_symndx = htab->r_sym (rela->r_info);
897463b1
L		 6106 if (r_symndx != STN_UNDEF)
6107 {
6108 Elf_Internal_Sym sym;
6109 if (!bed->s->swap_symbol_in (abfd,
6110 (htab->elf.dynsym->contents
6111 + r_symndx * bed->s->sizeof_sym),
6112 0, &sym))
6113 abort ();
d9e3b590 6114
897463b1
L		 6115 if (ELF_ST_TYPE (sym.st_info) == STT_GNU_IFUNC)
6116 return reloc_class_ifunc;
6117 }
d9e3b590 6118 }
cae1fbbb 6119
351f65ca 6120 switch ((int) ELF32_R_TYPE (rela->r_info))
c434dee6 6121 {
c428ce9d
L		 6122 case R_X86_64_IRELATIVE:
6123 return reloc_class_ifunc;
c434dee6 6124 case R_X86_64_RELATIVE:
1da80baa 6125 case R_X86_64_RELATIVE64:
c434dee6
AJ		 6126 return reloc_class_relative;
6127 case R_X86_64_JUMP_SLOT:
6128 return reloc_class_plt;
6129 case R_X86_64_COPY:
6130 return reloc_class_copy;
6131 default:
6132 return reloc_class_normal;
6133 }
6134}
6135
70256ad8
AJ		 6136/* Finish up the dynamic sections. */
6137
b34976b6 6138static bfd_boolean
351f65ca
L		 6139elf_x86_64_finish_dynamic_sections (bfd *output_bfd,
6140 struct bfd_link_info *info)
70256ad8 6141{
351f65ca 6142 struct elf_x86_64_link_hash_table *htab;
70256ad8
AJ		 6143 bfd *dynobj;
6144 asection *sdyn;
70256ad8 6145
351f65ca 6146 htab = elf_x86_64_hash_table (info);
4dfe6ac6
NC		 6147 if (htab == NULL)
6148 return FALSE;
6149
c434dee6 6150 dynobj = htab->elf.dynobj;
3d4d4302 6151 sdyn = bfd_get_linker_section (dynobj, ".dynamic");
70256ad8 6152
c434dee6 6153 if (htab->elf.dynamic_sections_created)
70256ad8 6154 {
82e96e07
L		 6155 bfd_byte *dyncon, *dynconend;
6156 const struct elf_backend_data *bed;
6157 bfd_size_type sizeof_dyn;
70256ad8 6158
6de2ae4a 6159 if (sdyn == NULL || htab->elf.sgot == NULL)
c434dee6 6160 abort ();
70256ad8 6161
82e96e07
L		 6162 bed = get_elf_backend_data (dynobj);
6163 sizeof_dyn = bed->s->sizeof_dyn;
6164 dyncon = sdyn->contents;
6165 dynconend = sdyn->contents + sdyn->size;
6166 for (; dyncon < dynconend; dyncon += sizeof_dyn)
70256ad8
AJ		 6167 {
6168 Elf_Internal_Dyn dyn;
70256ad8
AJ		 6169 asection *s;
6170
82e96e07 6171 (*bed->s->swap_dyn_in) (dynobj, dyncon, &dyn);
70256ad8
AJ		 6172
6173 switch (dyn.d_tag)
6174 {
6175 default:
053579d7 6176 continue;
70256ad8
AJ		 6177
6178 case DT_PLTGOT:
6de2ae4a 6179 s = htab->elf.sgotplt;
8c37241b 6180 dyn.d_un.d_ptr = s->output_section->vma + s->output_offset;
c434dee6 6181 break;
70256ad8
AJ		 6182
6183 case DT_JMPREL:
6de2ae4a 6184 dyn.d_un.d_ptr = htab->elf.srelplt->output_section->vma;
c434dee6 6185 break;
70256ad8 6186
c434dee6 6187 case DT_PLTRELSZ:
6de2ae4a 6188 s = htab->elf.srelplt->output_section;
eea6121a 6189 dyn.d_un.d_val = s->size;
70256ad8
AJ		 6190 break;
6191
67a4f2b7 6192 case DT_TLSDESC_PLT:
6de2ae4a 6193 s = htab->elf.splt;
67a4f2b7
AO		 6194 dyn.d_un.d_ptr = s->output_section->vma + s->output_offset
6195 + htab->tlsdesc_plt;
6196 break;
6197
6198 case DT_TLSDESC_GOT:
6de2ae4a 6199 s = htab->elf.sgot;
67a4f2b7
AO		 6200 dyn.d_un.d_ptr = s->output_section->vma + s->output_offset
6201 + htab->tlsdesc_got;
6202 break;
70256ad8 6203 }
c434dee6 6204
82e96e07 6205 (*bed->s->swap_dyn_out) (output_bfd, &dyn, dyncon);
70256ad8
AJ		 6206 }
6207
6de2ae4a 6208 if (htab->elf.splt && htab->elf.splt->size > 0)
70256ad8 6209 {
eed180f8 6210 elf_section_data (htab->elf.splt->output_section)
38b12349 6211 ->this_hdr.sh_entsize = htab->plt.plt_entry_size;
67a4f2b7 6212
38b12349 6213 if (htab->plt.has_plt0)
67a4f2b7 6214 {
38b12349
L		 6215 /* Fill in the special first entry in the procedure linkage
6216 table. */
6217 memcpy (htab->elf.splt->contents,
6218 htab->lazy_plt->plt0_entry,
6219 htab->lazy_plt->plt_entry_size);
6220 /* Add offset for pushq GOT+8(%rip), since the instruction
6221 uses 6 bytes subtract this value. */
67a4f2b7 6222 bfd_put_32 (output_bfd,
6de2ae4a
L		 6223 (htab->elf.sgotplt->output_section->vma
6224 + htab->elf.sgotplt->output_offset
67a4f2b7 6225 + 8
6de2ae4a
L		 6226 - htab->elf.splt->output_section->vma
6227 - htab->elf.splt->output_offset
67a4f2b7 6228 - 6),
38b12349
L		 6229 (htab->elf.splt->contents
6230 + htab->lazy_plt->plt0_got1_offset));
6231 /* Add offset for the PC-relative instruction accessing
6232 GOT+16, subtracting the offset to the end of that
6233 instruction. */
67a4f2b7 6234 bfd_put_32 (output_bfd,
38b12349
L		 6235 (htab->elf.sgotplt->output_section->vma
6236 + htab->elf.sgotplt->output_offset
6237 + 16
6de2ae4a
L		 6238 - htab->elf.splt->output_section->vma
6239 - htab->elf.splt->output_offset
38b12349
L		 6240 - htab->lazy_plt->plt0_got2_insn_end),
6241 (htab->elf.splt->contents
6242 + htab->lazy_plt->plt0_got2_offset));
6243
6244 if (htab->tlsdesc_plt)
6245 {
6246 bfd_put_64 (output_bfd, (bfd_vma) 0,
6247 htab->elf.sgot->contents + htab->tlsdesc_got);
6248
6249 memcpy (htab->elf.splt->contents + htab->tlsdesc_plt,
6250 htab->lazy_plt->plt0_entry,
6251 htab->lazy_plt->plt_entry_size);
6252
6253 /* Add offset for pushq GOT+8(%rip), since the
6254 instruction uses 6 bytes subtract this value. */
6255 bfd_put_32 (output_bfd,
6256 (htab->elf.sgotplt->output_section->vma
6257 + htab->elf.sgotplt->output_offset
6258 + 8
6259 - htab->elf.splt->output_section->vma
6260 - htab->elf.splt->output_offset
6261 - htab->tlsdesc_plt
6262 - 6),
6263 (htab->elf.splt->contents
6264 + htab->tlsdesc_plt
6265 + htab->lazy_plt->plt0_got1_offset));
6266 /* Add offset for the PC-relative instruction accessing
6267 GOT+TDG, where TDG stands for htab->tlsdesc_got,
6268 subtracting the offset to the end of that
6269 instruction. */
6270 bfd_put_32 (output_bfd,
6271 (htab->elf.sgot->output_section->vma
6272 + htab->elf.sgot->output_offset
6273 + htab->tlsdesc_got
6274 - htab->elf.splt->output_section->vma
6275 - htab->elf.splt->output_offset
6276 - htab->tlsdesc_plt
6277 - htab->lazy_plt->plt0_got2_insn_end),
6278 (htab->elf.splt->contents
6279 + htab->tlsdesc_plt
6280 + htab->lazy_plt->plt0_got2_offset));
6281 }
67a4f2b7 6282 }
70256ad8 6283 }
70256ad8
AJ		 6284 }
6285
38b12349
L		 6286 if (htab->plt_got != NULL && htab->plt_got->size > 0)
6287 elf_section_data (htab->plt_got->output_section)
6288 ->this_hdr.sh_entsize = htab->non_lazy_plt->plt_entry_size;
6289
f2c29a16
L		 6290 if (htab->plt_second != NULL && htab->plt_second->size > 0)
6291 elf_section_data (htab->plt_second->output_section)
38b12349 6292 ->this_hdr.sh_entsize = htab->non_lazy_plt->plt_entry_size;
0ff2b86e 6293
38b12349
L		 6294 /* GOT is always created in setup_gnu_properties. But it may not be
6295 needed. */
6296 if (htab->elf.sgotplt && htab->elf.sgotplt->size > 0)
70256ad8 6297 {
56d4289c
L		 6298 if (bfd_is_abs_section (htab->elf.sgotplt->output_section))
6299 {
4eca0228 6300 _bfd_error_handler
56d4289c
L		 6301 (_("discarded output section: `%A'"), htab->elf.sgotplt);
6302 return FALSE;
6303 }
6304
38b12349
L		 6305 /* Set the first entry in the global offset table to the address of
6306 the dynamic section. */
6307 if (sdyn == NULL)
6308 bfd_put_64 (output_bfd, (bfd_vma) 0, htab->elf.sgotplt->contents);
6309 else
6310 bfd_put_64 (output_bfd,
6311 sdyn->output_section->vma + sdyn->output_offset,
6312 htab->elf.sgotplt->contents);
6313 /* Write GOT[1] and GOT[2], needed for the dynamic linker. */
6314 bfd_put_64 (output_bfd, (bfd_vma) 0,
6315 htab->elf.sgotplt->contents + GOT_ENTRY_SIZE);
6316 bfd_put_64 (output_bfd, (bfd_vma) 0,
6317 htab->elf.sgotplt->contents + GOT_ENTRY_SIZE*2);
6318
6319 elf_section_data (htab->elf.sgotplt->output_section)->this_hdr.sh_entsize
6320 = GOT_ENTRY_SIZE;
c434dee6 6321 }
70256ad8 6322
e41b3a13 6323 /* Adjust .eh_frame for .plt section. */
9a2a56cc
AM		 6324 if (htab->plt_eh_frame != NULL
6325 && htab->plt_eh_frame->contents != NULL)
e41b3a13
JJ		 6326 {
6327 if (htab->elf.splt != NULL
6328 && htab->elf.splt->size != 0
6329 && (htab->elf.splt->flags & SEC_EXCLUDE) == 0
6330 && htab->elf.splt->output_section != NULL
6331 && htab->plt_eh_frame->output_section != NULL)
6332 {
6333 bfd_vma plt_start = htab->elf.splt->output_section->vma;
6334 bfd_vma eh_frame_start = htab->plt_eh_frame->output_section->vma
6335 + htab->plt_eh_frame->output_offset
6336 + PLT_FDE_START_OFFSET;
6337 bfd_put_signed_32 (dynobj, plt_start - eh_frame_start,
6338 htab->plt_eh_frame->contents
6339 + PLT_FDE_START_OFFSET);
6340 }
dbaa2011 6341 if (htab->plt_eh_frame->sec_info_type == SEC_INFO_TYPE_EH_FRAME)
e41b3a13
JJ		 6342 {
6343 if (! _bfd_elf_write_section_eh_frame (output_bfd, info,
6344 htab->plt_eh_frame,
6345 htab->plt_eh_frame->contents))
6346 return FALSE;
6347 }
6348 }
6349
fff53dae
L		 6350 /* Adjust .eh_frame for .plt.got section. */
6351 if (htab->plt_got_eh_frame != NULL
6352 && htab->plt_got_eh_frame->contents != NULL)
6353 {
6354 if (htab->plt_got != NULL
6355 && htab->plt_got->size != 0
6356 && (htab->plt_got->flags & SEC_EXCLUDE) == 0
6357 && htab->plt_got->output_section != NULL
6358 && htab->plt_got_eh_frame->output_section != NULL)
6359 {
6360 bfd_vma plt_start = htab->plt_got->output_section->vma;
6361 bfd_vma eh_frame_start = htab->plt_got_eh_frame->output_section->vma
6362 + htab->plt_got_eh_frame->output_offset
6363 + PLT_FDE_START_OFFSET;
6364 bfd_put_signed_32 (dynobj, plt_start - eh_frame_start,
6365 htab->plt_got_eh_frame->contents
6366 + PLT_FDE_START_OFFSET);
6367 }
6368 if (htab->plt_got_eh_frame->sec_info_type == SEC_INFO_TYPE_EH_FRAME)
6369 {
6370 if (! _bfd_elf_write_section_eh_frame (output_bfd, info,
6371 htab->plt_got_eh_frame,
6372 htab->plt_got_eh_frame->contents))
6373 return FALSE;
6374 }
6375 }
6376
f2c29a16
L		 6377 /* Adjust .eh_frame for the second PLT section. */
6378 if (htab->plt_second_eh_frame != NULL
6379 && htab->plt_second_eh_frame->contents != NULL)
8361ed4d 6380 {
f2c29a16
L		 6381 if (htab->plt_second != NULL
6382 && htab->plt_second->size != 0
6383 && (htab->plt_second->flags & SEC_EXCLUDE) == 0
6384 && htab->plt_second->output_section != NULL
6385 && htab->plt_second_eh_frame->output_section != NULL)
8361ed4d 6386 {
f2c29a16
L		 6387 bfd_vma plt_start = htab->plt_second->output_section->vma;
6388 bfd_vma eh_frame_start
6389 = (htab->plt_second_eh_frame->output_section->vma
6390 + htab->plt_second_eh_frame->output_offset
6391 + PLT_FDE_START_OFFSET);
8361ed4d 6392 bfd_put_signed_32 (dynobj, plt_start - eh_frame_start,
f2c29a16 6393 htab->plt_second_eh_frame->contents
8361ed4d
L		 6394 + PLT_FDE_START_OFFSET);
6395 }
f2c29a16
L		 6396 if (htab->plt_second_eh_frame->sec_info_type
6397 == SEC_INFO_TYPE_EH_FRAME)
8361ed4d
L		 6398 {
6399 if (! _bfd_elf_write_section_eh_frame (output_bfd, info,
f2c29a16
L		 6400 htab->plt_second_eh_frame,
6401 htab->plt_second_eh_frame->contents))
8361ed4d
L		 6402 return FALSE;
6403 }
6404 }
6405
6de2ae4a
L		 6406 if (htab->elf.sgot && htab->elf.sgot->size > 0)
6407 elf_section_data (htab->elf.sgot->output_section)->this_hdr.sh_entsize
8c37241b
JJ		 6408 = GOT_ENTRY_SIZE;
6409
aec6b87e
L		 6410 /* Fill PLT entries for undefined weak symbols in PIE. */
6411 if (bfd_link_pie (info))
6412 bfd_hash_traverse (&info->hash->table,
6413 elf_x86_64_pie_finish_undefweak_symbol,
6414 info);
6415
b34976b6 6416 return TRUE;
8d88c4ca
NC		 6417}
6418
233cc9c1
L		 6419/* Fill PLT/GOT entries and allocate dynamic relocations for local
6420 STT_GNU_IFUNC symbols, which aren't in the ELF linker hash table.
6421 It has to be done before elf_link_sort_relocs is called so that
6422 dynamic relocations are properly sorted. */
6423
6424static bfd_boolean
6425elf_x86_64_output_arch_local_syms
6426 (bfd *output_bfd ATTRIBUTE_UNUSED,
6427 struct bfd_link_info *info,
6428 void *flaginfo ATTRIBUTE_UNUSED,
6429 int (*func) (void *, const char *,
6430 Elf_Internal_Sym *,
6431 asection *,
6432 struct elf_link_hash_entry *) ATTRIBUTE_UNUSED)
6433{
6434 struct elf_x86_64_link_hash_table *htab = elf_x86_64_hash_table (info);
6435 if (htab == NULL)
6436 return FALSE;
6437
6438 /* Fill PLT and GOT entries for local STT_GNU_IFUNC symbols. */
6439 htab_traverse (htab->loc_hash_table,
6440 elf_x86_64_finish_local_dynamic_symbol,
6441 info);
6442
6443 return TRUE;
6444}
6445
38b12349 6446/* Sort relocs into address order. */
4c45e5c9 6447
38b12349
L		 6448static int
6449compare_relocs (const void *ap, const void *bp)
4c45e5c9 6450{
38b12349
L		 6451 const arelent *a = * (const arelent **) ap;
6452 const arelent *b = * (const arelent **) bp;
144bed8d 6453
38b12349
L		 6454 if (a->address > b->address)
6455 return 1;
6456 else if (a->address < b->address)
6457 return -1;
3972882e 6458 else
38b12349
L		 6459 return 0;
6460}
cca5b8b6 6461
38b12349
L		 6462enum elf_x86_64_plt_type
6463{
6464 plt_non_lazy = 0,
6465 plt_lazy = 1 << 0,
f2c29a16 6466 plt_second = 1 << 1,
38b12349
L		 6467 plt_unknown = -1
6468};
6469
6470struct elf_x86_64_plt
6471{
6472 const char *name;
6473 asection *sec;
6474 bfd_byte *contents;
6475 enum elf_x86_64_plt_type type;
6476 unsigned int plt_got_offset;
6477 unsigned int plt_got_insn_size;
6478 unsigned int plt_entry_size;
6479 long count;
6480};
6481
6482/* Forward declaration. */
6483static const struct elf_x86_64_lazy_plt_layout elf_x86_64_nacl_plt;
6484
6485/* Similar to _bfd_elf_get_synthetic_symtab. Support PLTs with all
6486 dynamic relocations. */
6487
6488static long
6489elf_x86_64_get_synthetic_symtab (bfd *abfd,
6490 long symcount ATTRIBUTE_UNUSED,
6491 asymbol **syms ATTRIBUTE_UNUSED,
6492 long dynsymcount,
6493 asymbol **dynsyms,
6494 asymbol **ret)
6495{
6496 long size, count, i, n;
6497 int j;
6498 unsigned int plt_got_offset, plt_entry_size, plt_got_insn_size;
6499 asymbol *s;
6500 bfd_byte *plt_contents;
6501 long dynrelcount, relsize;
6502 arelent **dynrelbuf;
6503 const struct elf_x86_64_lazy_plt_layout *lazy_plt;
6504 const struct elf_x86_64_non_lazy_plt_layout *non_lazy_plt;
6505 const struct elf_x86_64_lazy_plt_layout *lazy_bnd_plt;
6506 const struct elf_x86_64_non_lazy_plt_layout *non_lazy_bnd_plt;
6507 asection *plt;
6508 char *names;
6509 enum elf_x86_64_plt_type plt_type;
6510 struct elf_x86_64_plt plts[] =
144bed8d 6511 {
38b12349
L		 6512 { ".plt", NULL, NULL, plt_unknown, 0, 0, 0, 0 },
6513 { ".plt.got", NULL, NULL, plt_non_lazy, 0, 0, 0, 0 },
f2c29a16
L		 6514 { ".plt.sec", NULL, NULL, plt_second, 0, 0, 0, 0 },
6515 { ".plt.bnd", NULL, NULL, plt_second, 0, 0, 0, 0 },
dd9e66ee 6516 { NULL, NULL, NULL, plt_non_lazy, 0, 0, 0, 0 }
38b12349 6517 };
144bed8d 6518
38b12349 6519 *ret = NULL;
144bed8d 6520
38b12349
L		 6521 if ((abfd->flags & (DYNAMIC | EXEC_P)) == 0)
6522 return 0;
144bed8d 6523
38b12349
L		 6524 if (dynsymcount <= 0)
6525 return 0;
cca5b8b6 6526
38b12349
L		 6527 relsize = bfd_get_dynamic_reloc_upper_bound (abfd);
6528 if (relsize <= 0)
6529 return -1;
6530
6531 dynrelbuf = (arelent **) bfd_malloc (relsize);
6532 if (dynrelbuf == NULL)
6533 return -1;
6534
6535 dynrelcount = bfd_canonicalize_dynamic_reloc (abfd, dynrelbuf,
6536 dynsyms);
cca5b8b6 6537
38b12349
L		 6538 /* Sort the relocs by address. */
6539 qsort (dynrelbuf, dynrelcount, sizeof (arelent *), compare_relocs);
6540
6541 if (get_elf_x86_64_backend_data (abfd)->os == is_normal)
144bed8d 6542 {
38b12349
L		 6543 lazy_plt = &elf_x86_64_lazy_plt;
6544 non_lazy_plt = &elf_x86_64_non_lazy_plt;
6545 lazy_bnd_plt = &elf_x86_64_lazy_bnd_plt;
6546 non_lazy_bnd_plt = &elf_x86_64_non_lazy_bnd_plt;
6547 }
6548 else
6549 {
6550 lazy_plt = &elf_x86_64_nacl_plt;
6551 non_lazy_plt = NULL;
6552 lazy_bnd_plt = NULL;
6553 non_lazy_bnd_plt = NULL;
6554 }
144bed8d 6555
38b12349
L		 6556 count = 0;
6557 for (j = 0; plts[j].name != NULL; j++)
6558 {
6559 plt = bfd_get_section_by_name (abfd, plts[j].name);
6560 if (plt == NULL)
6f25f223 6561 continue;
533d0af0 6562
38b12349
L		 6563 /* Get the PLT section contents. */
6564 plt_contents = (bfd_byte *) bfd_malloc (plt->size);
6565 if (plt_contents == NULL)
6566 break;
6567 if (!bfd_get_section_contents (abfd, (asection *) plt,
6568 plt_contents, 0, plt->size))
6569 {
6570 free (plt_contents);
6571 break;
6572 }
144bed8d 6573
38b12349
L		 6574 /* Check what kind of PLT it is. */
6575 plt_type = plt_unknown;
6576 if (plts[j].type == plt_unknown)
144bed8d 6577 {
38b12349
L		 6578 /* Match lazy PLT first. Need to check the first two
6579 instructions. */
6580 if ((memcmp (plt_contents, lazy_plt->plt0_entry,
6581 lazy_plt->plt0_got1_offset) == 0)
6582 && (memcmp (plt_contents + 6, lazy_plt->plt0_entry + 6,
6583 2) == 0))
6584 plt_type = plt_lazy;
6585 else if (lazy_bnd_plt != NULL
6586 && (memcmp (plt_contents, lazy_bnd_plt->plt0_entry,
6587 lazy_bnd_plt->plt0_got1_offset) == 0)
6588 && (memcmp (plt_contents + 6,
6589 lazy_bnd_plt->plt0_entry + 6, 3) == 0))
ec1f73bb 6590 {
f2c29a16 6591 plt_type = plt_lazy | plt_second;
38b12349 6592 lazy_plt = lazy_bnd_plt;
ec1f73bb 6593 }
144bed8d 6594 }
fca6ae69 6595
38b12349
L		 6596 if (non_lazy_plt != NULL
6597 && (plt_type == plt_unknown || plt_type == plt_non_lazy))
6598 {
6599 /* Match non-lazy PLT. */
6600 if (memcmp (plt_contents, non_lazy_plt->plt_entry,
6601 non_lazy_plt->plt_got_offset) == 0)
6602 plt_type = plt_non_lazy;
6603 }
6604
6605 if (non_lazy_bnd_plt != NULL
f2c29a16 6606 && (plt_type == plt_unknown || plt_type == plt_second))
38b12349
L		 6607 {
6608 /* Match BND PLT. */
6609 if (memcmp (plt_contents, non_lazy_bnd_plt->plt_entry,
6610 non_lazy_bnd_plt->plt_got_offset) == 0)
6611 {
f2c29a16 6612 plt_type = plt_second;
38b12349
L		 6613 non_lazy_plt = non_lazy_bnd_plt;
6614 }
6615 }
6616
6617 if (plt_type == plt_unknown)
6618 continue;
6619
6620 plts[j].sec = plt;
6621 plts[j].type = plt_type;
6622
6623 if ((plt_type & plt_lazy))
6624 {
6625 plts[j].plt_got_offset = lazy_plt->plt_got_offset;
6626 plts[j].plt_got_insn_size = lazy_plt->plt_got_insn_size;
6627 plts[j].plt_entry_size = lazy_plt->plt_entry_size;
6628 /* Skip PLT0 in lazy PLT. */
6629 i = 1;
6630 }
6631 else
6632 {
6633 plts[j].plt_got_offset = non_lazy_plt->plt_got_offset;
6634 plts[j].plt_got_insn_size = non_lazy_plt->plt_got_insn_size;
6635 plts[j].plt_entry_size = non_lazy_plt->plt_entry_size;
6636 i = 0;
6637 }
6638
f2c29a16
L		 6639 /* Skip lazy PLT when the second PLT is used. */
6640 if (plt_type == (plt_lazy | plt_second))
38b12349
L		 6641 plts[j].count = 0;
6642 else
6643 {
6644 n = plt->size / plts[j].plt_entry_size;
6645 plts[j].count = n;
6646 count += n - i;
6647 }
6648
6649 plts[j].contents = plt_contents;
144bed8d
L		 6650 }
6651
38b12349
L		 6652 size = count * sizeof (asymbol);
6653 s = *ret = (asymbol *) bfd_zmalloc (size);
6654 if (s == NULL)
6655 {
6656bad_return:
6657 for (j = 0; plts[j].name != NULL; j++)
6658 if (plts[j].contents != NULL)
6659 free (plts[j].contents);
6660 free (dynrelbuf);
6661 return -1;
6662 }
3972882e 6663
38b12349
L		 6664 /* Check for each PLT section. */
6665 size = 0;
6666 n = 0;
6667 for (j = 0; plts[j].name != NULL; j++)
6668 if ((plt_contents = plts[j].contents) != NULL)
6669 {
6670 long k;
6671 bfd_vma offset;
8df9fc9d 6672
38b12349
L		 6673 plt_got_offset = plts[j].plt_got_offset;
6674 plt_got_insn_size = plts[j].plt_got_insn_size;
6675 plt_entry_size = plts[j].plt_entry_size;
0ff2b86e 6676
38b12349
L		 6677 plt = plts[j].sec;
6678
6679 if ((plts[j].type & plt_lazy))
6680 {
6681 /* Skip PLT0 in lazy PLT. */
6682 k = 1;
6683 offset = plt_entry_size;
6684 }
6685 else
6686 {
6687 k = 0;
6688 offset = 0;
6689 }
6690
6691 /* Check each PLT entry against dynamic relocations. */
6692 for (; k < plts[j].count; k++)
6693 {
6694 int off;
6695 bfd_vma got_vma;
6696 long min, max, mid;
6697 arelent *p;
6698
6699 /* Get the PC-relative offset, a signed 32-bit integer. */
6700 off = H_GET_32 (abfd, (plt_contents + offset
6701 + plt_got_offset));
6702 got_vma = plt->vma + offset + off + plt_got_insn_size;
6703
6704 /* Binary search. */
6705 p = dynrelbuf[0];
6706 min = 0;
6707 max = dynrelcount;
6708 while ((min + 1) < max)
6709 {
6710 arelent *r;
6711
6712 mid = (min + max) / 2;
6713 r = dynrelbuf[mid];
6714 if (got_vma > r->address)
6715 min = mid;
6716 else if (got_vma < r->address)
6717 max = mid;
6718 else
6719 {
6720 p = r;
6721 break;
6722 }
6723 }
6724
6725 /* Skip unknown relocation. PR 17512: file: bc9d6cf5. */
6726 if (got_vma == p->address
6727 && p->howto != NULL
6728 && (p->howto->type == R_X86_64_JUMP_SLOT
6729 || p->howto->type == R_X86_64_GLOB_DAT
6730 || p->howto->type == R_X86_64_IRELATIVE))
6731 {
6732 *s = **p->sym_ptr_ptr;
6733 /* Undefined syms won't have BSF_LOCAL or BSF_GLOBAL
6734 set. Since we are defining a symbol, ensure one
6735 of them is set. */
6736 if ((s->flags & BSF_LOCAL) == 0)
6737 s->flags |= BSF_GLOBAL;
6738 s->flags |= BSF_SYNTHETIC;
6739 /* This is no longer a section symbol. */
6740 s->flags &= ~BSF_SECTION_SYM;
6741 s->section = plt;
6742 s->the_bfd = plt->owner;
6743 s->value = offset;
6744 /* Store relocation for later use. */
6745 s->udata.p = p;
6746 /* Add @plt to function name later. */
6747 size += strlen (s->name) + sizeof ("@plt");
6748 if (p->addend != 0)
6749 size += sizeof ("+0x") - 1 + 8 + 8 * ABI_64_P (abfd);
6750 n++;
6751 s++;
6752 }
6753 offset += plt_entry_size;
6754 }
6755 }
6756
6757 /* PLT entries with R_X86_64_TLSDESC relocations are skipped. */
6758 if (n == 0)
6759 goto bad_return;
6760
6761 count = n;
6762
6763 /* Allocate space for @plt suffixes. */
6764 names = (char *) bfd_malloc (size);
6765 if (s == NULL)
6766 goto bad_return;
6767
6768 s = *ret;
6769 for (i = 0; i < count; i++)
6770 {
6771 /* Add @plt to function name. */
6772 arelent *p = (arelent *) s->udata.p;
6773 /* Clear it now. */
6774 s->udata.p = NULL;
6775 size = strlen (s->name);
6776 memcpy (names, s->name, size);
6777 s->name = names;
6778 names += size;
6779 if (p->addend != 0)
6780 {
6781 char buf[30], *a;
6782
6783 memcpy (names, "+0x", sizeof ("+0x") - 1);
6784 names += sizeof ("+0x") - 1;
6785 bfd_sprintf_vma (abfd, buf, p->addend);
6786 for (a = buf; *a == '0'; ++a)
6787 ;
6788 size = strlen (a);
6789 memcpy (names, a, size);
6790 names += size;
6791 }
6792 memcpy (names, "@plt", sizeof ("@plt"));
6793 names += sizeof ("@plt");
6794 s++;
6795 }
6796
6797 for (j = 0; plts[j].name != NULL; j++)
6798 if (plts[j].contents != NULL)
6799 free (plts[j].contents);
6800
6801 free (dynrelbuf);
6802
6803 return count;
0ff2b86e
L		 6804}
6805
d2b2c203
DJ		 6806/* Handle an x86-64 specific section when reading an object file. This
6807 is called when elfcode.h finds a section with an unknown type. */
6808
6809static bfd_boolean
0c723101
L		 6810elf_x86_64_section_from_shdr (bfd *abfd, Elf_Internal_Shdr *hdr,
6811 const char *name, int shindex)
d2b2c203
DJ		 6812{
6813 if (hdr->sh_type != SHT_X86_64_UNWIND)
6814 return FALSE;
6815
6dc132d9 6816 if (! _bfd_elf_make_section_from_shdr (abfd, hdr, name, shindex))
d2b2c203
DJ		 6817 return FALSE;
6818
6819 return TRUE;
6820}
6821
3b22753a
L		 6822/* Hook called by the linker routine which adds symbols from an object
6823 file. We use it to put SHN_X86_64_LCOMMON items in .lbss, instead
6824 of .bss. */
6825
6826static bfd_boolean
351f65ca 6827elf_x86_64_add_symbol_hook (bfd *abfd,
a43942db 6828 struct bfd_link_info *info ATTRIBUTE_UNUSED,
351f65ca
L		 6829 Elf_Internal_Sym *sym,
6830 const char **namep ATTRIBUTE_UNUSED,
6831 flagword *flagsp ATTRIBUTE_UNUSED,
6832 asection **secp,
6833 bfd_vma *valp)
3b22753a
L		 6834{
6835 asection *lcomm;
6836
6837 switch (sym->st_shndx)
6838 {
6839 case SHN_X86_64_LCOMMON:
6840 lcomm = bfd_get_section_by_name (abfd, "LARGE_COMMON");
6841 if (lcomm == NULL)
6842 {
6843 lcomm = bfd_make_section_with_flags (abfd,
6844 "LARGE_COMMON",
6845 (SEC_ALLOC
6846 | SEC_IS_COMMON
6847 | SEC_LINKER_CREATED));
6848 if (lcomm == NULL)
6849 return FALSE;
6850 elf_section_flags (lcomm) |= SHF_X86_64_LARGE;
6851 }
6852 *secp = lcomm;
6853 *valp = sym->st_size;
c35bdf6e 6854 return TRUE;
3b22753a 6855 }
d8045f23 6856
3b22753a
L		 6857 return TRUE;
6858}
6859
6860
6861/* Given a BFD section, try to locate the corresponding ELF section
6862 index. */
6863
6864static bfd_boolean
351f65ca
L		 6865elf_x86_64_elf_section_from_bfd_section (bfd *abfd ATTRIBUTE_UNUSED,
6866 asection *sec, int *index_return)
3b22753a
L		 6867{
6868 if (sec == &_bfd_elf_large_com_section)
6869 {
91d6fa6a 6870 *index_return = SHN_X86_64_LCOMMON;
3b22753a
L		 6871 return TRUE;
6872 }
6873 return FALSE;
6874}
6875
6876/* Process a symbol. */
6877
6878static void
351f65ca
L		 6879elf_x86_64_symbol_processing (bfd *abfd ATTRIBUTE_UNUSED,
6880 asymbol *asym)
3b22753a
L		 6881{
6882 elf_symbol_type *elfsym = (elf_symbol_type *) asym;
6883
6884 switch (elfsym->internal_elf_sym.st_shndx)
6885 {
6886 case SHN_X86_64_LCOMMON:
6887 asym->section = &_bfd_elf_large_com_section;
6888 asym->value = elfsym->internal_elf_sym.st_size;
6889 /* Common symbol doesn't set BSF_GLOBAL. */
6890 asym->flags &= ~BSF_GLOBAL;
6891 break;
6892 }
6893}
6894
6895static bfd_boolean
351f65ca 6896elf_x86_64_common_definition (Elf_Internal_Sym *sym)
3b22753a
L		 6897{
6898 return (sym->st_shndx == SHN_COMMON
6899 || sym->st_shndx == SHN_X86_64_LCOMMON);
6900}
6901
6902static unsigned int
351f65ca 6903elf_x86_64_common_section_index (asection *sec)
3b22753a
L		 6904{
6905 if ((elf_section_flags (sec) & SHF_X86_64_LARGE) == 0)
6906 return SHN_COMMON;
6907 else
6908 return SHN_X86_64_LCOMMON;
6909}
6910
6911static asection *
351f65ca 6912elf_x86_64_common_section (asection *sec)
3b22753a
L		 6913{
6914 if ((elf_section_flags (sec) & SHF_X86_64_LARGE) == 0)
6915 return bfd_com_section_ptr;
6916 else
6917 return &_bfd_elf_large_com_section;
6918}
6919
6920static bfd_boolean
5d13b3b3
AM		 6921elf_x86_64_merge_symbol (struct elf_link_hash_entry *h,
6922 const Elf_Internal_Sym *sym,
351f65ca 6923 asection **psec,
5d13b3b3
AM		 6924 bfd_boolean newdef,
6925 bfd_boolean olddef,
351f65ca 6926 bfd *oldbfd,
5d13b3b3 6927 const asection *oldsec)
3b22753a
L		 6928{
6929 /* A normal common symbol and a large common symbol result in a
00492999
L		 6930 normal common symbol. We turn the large common symbol into a
6931 normal one. */
5d13b3b3 6932 if (!olddef
3b22753a 6933 && h->root.type == bfd_link_hash_common
5d13b3b3
AM		 6934 && !newdef
6935 && bfd_is_com_section (*psec)
6936 && oldsec != *psec)
3b22753a 6937 {
00492999 6938 if (sym->st_shndx == SHN_COMMON
5d13b3b3 6939 && (elf_section_flags (oldsec) & SHF_X86_64_LARGE) != 0)
00492999
L		 6940 {
6941 h->root.u.c.p->section
6942 = bfd_make_section_old_way (oldbfd, "COMMON");
6943 h->root.u.c.p->section->flags = SEC_ALLOC;
6944 }
6945 else if (sym->st_shndx == SHN_X86_64_LCOMMON
5d13b3b3
AM		 6946 && (elf_section_flags (oldsec) & SHF_X86_64_LARGE) == 0)
6947 *psec = bfd_com_section_ptr;
3b22753a
L		 6948 }
6949
6950 return TRUE;
6951}
6952
6953static int
351f65ca
L		 6954elf_x86_64_additional_program_headers (bfd *abfd,
6955 struct bfd_link_info *info ATTRIBUTE_UNUSED)
3b22753a
L		 6956{
6957 asection *s;
9a2e389a 6958 int count = 0;
3b22753a
L		 6959
6960 /* Check to see if we need a large readonly segment. */
6961 s = bfd_get_section_by_name (abfd, ".lrodata");
6962 if (s && (s->flags & SEC_LOAD))
6963 count++;
6964
6965 /* Check to see if we need a large data segment. Since .lbss sections
6966 is placed right after the .bss section, there should be no need for
6967 a large data segment just because of .lbss. */
6968 s = bfd_get_section_by_name (abfd, ".ldata");
6969 if (s && (s->flags & SEC_LOAD))
6970 count++;
6971
6972 return count;
6973}
6974
fdc90cb4
JJ		 6975/* Return TRUE if symbol should be hashed in the `.gnu.hash' section. */
6976
6977static bfd_boolean
351f65ca 6978elf_x86_64_hash_symbol (struct elf_link_hash_entry *h)
fdc90cb4
JJ		 6979{
6980 if (h->plt.offset != (bfd_vma) -1
6981 && !h->def_regular
6982 && !h->pointer_equality_needed)
6983 return FALSE;
6984
6985 return _bfd_elf_hash_symbol (h);
6986}
6987
c543bf9a
L		 6988/* Return TRUE iff relocations for INPUT are compatible with OUTPUT. */
6989
6990static bfd_boolean
6991elf_x86_64_relocs_compatible (const bfd_target *input,
6992 const bfd_target *output)
6993{
6994 return ((xvec_get_elf_backend_data (input)->s->elfclass
6995 == xvec_get_elf_backend_data (output)->s->elfclass)
6996 && _bfd_elf_relocs_compatible (input, output));
6997}
6998
46bed679
L		 6999/* Parse x86-64 GNU properties. */
7000
7001static enum elf_property_kind
7002elf_x86_64_parse_gnu_properties (bfd *abfd, unsigned int type,
7003 bfd_byte *ptr, unsigned int datasz)
7004{
7005 elf_property *prop;
7006
7007 switch (type)
7008 {
7009 case GNU_PROPERTY_X86_ISA_1_USED:
7010 case GNU_PROPERTY_X86_ISA_1_NEEDED:
7011 if (datasz != 4)
7012 {
7013 _bfd_error_handler
7014 ((type == GNU_PROPERTY_X86_ISA_1_USED
e4097f5e
L		 7015 ? _("error: %B: <corrupt x86 ISA used size: 0x%x>")
7016 : _("error: %B: <corrupt x86 ISA needed size: 0x%x>")),
46bed679
L		 7017 abfd, datasz);
7018 return property_corrupt;
7019 }
7020 prop = _bfd_elf_get_property (abfd, type, datasz);
73caa85d
L		 7021 /* Combine properties of the same type. */
7022 prop->u.number |= bfd_h_get_32 (abfd, ptr);
46bed679
L		 7023 prop->pr_kind = property_number;
7024 break;
7025
7026 default:
7027 return property_ignored;
7028 }
7029
7030 return property_number;
7031}
7032
7033/* Merge x86-64 GNU property BPROP with APROP. If APROP isn't NULL,
7034 return TRUE if APROP is updated. Otherwise, return TRUE if BPROP
7035 should be merged with ABFD. */
7036
7037static bfd_boolean
5c3ce2bc
L		 7038elf_x86_64_merge_gnu_properties (struct bfd_link_info *info ATTRIBUTE_UNUSED,
7039 bfd *abfd ATTRIBUTE_UNUSED,
46bed679
L		 7040 elf_property *aprop,
7041 elf_property *bprop)
7042{
7043 unsigned int number;
7044 bfd_boolean updated = FALSE;
7045 unsigned int pr_type = aprop != NULL ? aprop->pr_type : bprop->pr_type;
7046
7047 switch (pr_type)
7048 {
7049 case GNU_PROPERTY_X86_ISA_1_USED:
7050 case GNU_PROPERTY_X86_ISA_1_NEEDED:
7051 if (aprop != NULL && bprop != NULL)
7052 {
7053 number = aprop->u.number;
7054 aprop->u.number = number | bprop->u.number;
7055 updated = number != (unsigned int) aprop->u.number;
7056 }
7057 else
7058 {
7059 /* Return TRUE if APROP is NULL to indicate that BPROP should
7060 be added to ABFD. */
7061 updated = aprop == NULL;
7062 }
7063 break;
7064
7065 default:
7066 /* Never should happen. */
7067 abort ();
7068 }
7069
7070 return updated;
7071}
7072
38b12349
L		 7073/* Set up x86-64 GNU properties. Return the first relocatable ELF input
7074 with GNU properties if found. Otherwise, return NULL. */
7075
7076static bfd *
7077elf_x86_64_link_setup_gnu_properties (struct bfd_link_info *info)
7078{
7079 bfd_boolean normal_target;
7080 bfd_boolean lazy_plt;
7081 asection *sec, *pltsec;
7082 bfd *dynobj;
7083 unsigned int plt_alignment;
7084 struct elf_x86_64_link_hash_table *htab;
7085 bfd *pbfd = _bfd_elf_link_setup_gnu_properties (info);
7086
7087 if (bfd_link_relocatable (info))
7088 return pbfd;
7089
7090 htab = elf_x86_64_hash_table (info);
7091 if (htab == NULL)
7092 return pbfd;
7093
7094 dynobj = htab->elf.dynobj;
7095
7096 /* Set htab->elf.dynobj here so that there is no need to check and
7097 set it in check_relocs. */
7098 if (dynobj == NULL)
7099 {
7100 bfd *abfd;
7101
7102 /* Find a normal input file to hold linker created
7103 sections. */
7104 for (abfd = info->input_bfds;
7105 abfd != NULL;
7106 abfd = abfd->link.next)
7107 if ((abfd->flags
7108 & (DYNAMIC | BFD_LINKER_CREATED | BFD_PLUGIN)) == 0)
7109 {
7110 htab->elf.dynobj = abfd;
7111 dynobj = abfd;
7112 break;
7113 }
7114 }
7115
7116 /* Even when lazy binding is disabled by "-z now", the PLT0 entry may
7117 still be used with LD_AUDIT or LD_PROFILE if PLT entry is used for
7118 canonical function address. */
7119 htab->plt.has_plt0 = 1;
7120
7121 if (get_elf_x86_64_backend_data (info->output_bfd)->os
7122 == is_normal)
7123 {
7124 if (info->bndplt)
7125 {
7126 htab->lazy_plt = &elf_x86_64_lazy_bnd_plt;
7127 htab->non_lazy_plt = &elf_x86_64_non_lazy_bnd_plt;
7128 }
7129 else
7130 {
7131 htab->lazy_plt = &elf_x86_64_lazy_plt;
7132 htab->non_lazy_plt = &elf_x86_64_non_lazy_plt;
7133 }
7134 normal_target = TRUE;
7135 }
7136 else
7137 {
7138 htab->lazy_plt = &elf_x86_64_nacl_plt;
7139 htab->non_lazy_plt = NULL;
7140 normal_target = FALSE;
7141 }
7142
7143 pltsec = htab->elf.splt;
7144
7145 /* If the non-lazy PLT is available, use it for all PLT entries if
7146 there are no PLT0 or no .plt section. */
7147 if (htab->non_lazy_plt != NULL
7148 && (!htab->plt.has_plt0 || pltsec == NULL))
7149 {
7150 lazy_plt = FALSE;
7151 htab->plt.plt_entry
7152 = htab->non_lazy_plt->plt_entry;
7153 htab->plt.plt_entry_size
7154 = htab->non_lazy_plt->plt_entry_size;
7155 htab->plt.plt_got_offset
7156 = htab->non_lazy_plt->plt_got_offset;
7157 htab->plt.plt_got_insn_size
7158 = htab->non_lazy_plt->plt_got_insn_size;
7159 htab->plt.eh_frame_plt_size
7160 = htab->non_lazy_plt->eh_frame_plt_size;
7161 htab->plt.eh_frame_plt
7162 = htab->non_lazy_plt->eh_frame_plt;
7163 }
7164 else
7165 {
7166 lazy_plt = TRUE;
7167 htab->plt.plt_entry
7168 = htab->lazy_plt->plt_entry;
7169 htab->plt.plt_entry_size
7170 = htab->lazy_plt->plt_entry_size;
7171 htab->plt.plt_got_offset
7172 = htab->lazy_plt->plt_got_offset;
7173 htab->plt.plt_got_insn_size
7174 = htab->lazy_plt->plt_got_insn_size;
7175 htab->plt.eh_frame_plt_size
7176 = htab->lazy_plt->eh_frame_plt_size;
7177 htab->plt.eh_frame_plt
7178 = htab->lazy_plt->eh_frame_plt;
7179 }
7180
7181 /* Return if there are no normal input files. */
7182 if (dynobj == NULL)
7183 return pbfd;
7184
7185 /* Since create_dynamic_sections isn't always called, but GOT
7186 relocations need GOT relocations, create them here so that we
7187 don't need to do it in check_relocs. */
7188 if (htab->elf.sgot == NULL
7189 && !_bfd_elf_create_got_section (dynobj, info))
7190 info->callbacks->einfo (_("%F: failed to create GOT sections\n"));
7191
7192 /* Align .got and .got.plt sections to their entry size. Do it here
7193 instead of in create_dynamic_sections so that they are always
7194 properly aligned even if create_dynamic_sections isn't called. */
7195 sec = htab->elf.sgot;
7196 if (!bfd_set_section_alignment (dynobj, sec, 3))
7197 {
7198error_alignment:
7199 info->callbacks->einfo (_("%F%A: failed to align section\n"),
7200 sec);
7201 }
7202
7203 sec = htab->elf.sgotplt;
7204 if (!bfd_set_section_alignment (dynobj, sec, 3))
7205 goto error_alignment;
7206
7207 /* Create the ifunc sections here so that check_relocs can be
7208 simplified. */
7209 if (!_bfd_elf_create_ifunc_sections (dynobj, info))
7210 info->callbacks->einfo (_("%F: failed to create ifunc sections\n"));
7211
7212 plt_alignment = bfd_log2 (htab->plt.plt_entry_size);
7213
7214 if (pltsec != NULL)
7215 {
7216 /* Whe creating executable, set the contents of the .interp
7217 section to the interpreter. */
7218 if (bfd_link_executable (info) && !info->nointerp)
7219 {
7220 asection *s = bfd_get_linker_section (dynobj, ".interp");
7221 if (s == NULL)
7222 abort ();
7223 s->size = htab->dynamic_interpreter_size;
7224 s->contents = (unsigned char *) htab->dynamic_interpreter;
7225 htab->interp = s;
7226 }
7227
7228 /* Don't change PLT section alignment for NaCl since it uses
7229 64-byte PLT entry and sets PLT section alignment to 32
7230 bytes. Don't create additional PLT sections for NaCl. */
7231 if (normal_target)
7232 {
7233 const struct elf_backend_data *bed
7234 = get_elf_backend_data (dynobj);
7235 flagword pltflags = (bed->dynamic_sec_flags
7236 | SEC_ALLOC
7237 | SEC_CODE
7238 | SEC_LOAD
7239 | SEC_READONLY);
7240 unsigned int non_lazy_plt_alignment
7241 = bfd_log2 (htab->non_lazy_plt->plt_entry_size);
7242
7243 sec = pltsec;
7244 if (!bfd_set_section_alignment (sec->owner, sec,
7245 plt_alignment))
7246 goto error_alignment;
7247
7248 /* Create the GOT procedure linkage table. */
7249 sec = bfd_make_section_anyway_with_flags (dynobj,
7250 ".plt.got",
7251 pltflags);
7252 if (sec == NULL)
7253 info->callbacks->einfo (_("%F: failed to create GOT PLT section\n"));
7254
7255 if (!bfd_set_section_alignment (dynobj, sec,
7256 non_lazy_plt_alignment))
7257 goto error_alignment;
7258
7259 htab->plt_got = sec;
7260
7261 /* MPX PLT is supported only for non-NaCl target in 64-bit
7262 mode and is needed only for lazy binding. */
7263 if (lazy_plt
25f94347 7264 && info->bndplt && ABI_64_P (dynobj))
38b12349
L		 7265 {
7266 /* Create the second PLT for Intel MPX support. */
7267 sec = bfd_make_section_anyway_with_flags (dynobj,
f2c29a16 7268 ".plt.sec",
38b12349
L		 7269 pltflags);
7270 if (sec == NULL)
7271 info->callbacks->einfo (_("%F: failed to create BND PLT section\n"));
7272
7273 if (!bfd_set_section_alignment (dynobj, sec,
7274 non_lazy_plt_alignment))
7275 goto error_alignment;
7276
f2c29a16 7277 htab->plt_second = sec;
38b12349
L		 7278 }
7279 }
7280
7281 if (!info->no_ld_generated_unwind_info)
7282 {
7283 flagword flags = (SEC_ALLOC | SEC_LOAD | SEC_READONLY
7284 | SEC_HAS_CONTENTS | SEC_IN_MEMORY
7285 | SEC_LINKER_CREATED);
7286
7287 sec = bfd_make_section_anyway_with_flags (dynobj,
7288 ".eh_frame",
7289 flags);
7290 if (sec == NULL)
7291 info->callbacks->einfo (_("%F: failed to create PLT .eh_frame section\n"));
7292
7293 if (!bfd_set_section_alignment (dynobj, sec,
7294 ABI_64_P (dynobj) ? 3 : 2))
7295 goto error_alignment;
7296
7297 htab->plt_eh_frame = sec;
7298
7299 if (htab->plt_got != NULL)
7300 {
7301 sec = bfd_make_section_anyway_with_flags (dynobj,
7302 ".eh_frame",
7303 flags);
7304 if (sec == NULL)
7305 info->callbacks->einfo (_("%F: failed to create GOT PLT .eh_frame section\n"));
7306
7307 if (!bfd_set_section_alignment (dynobj, sec,
7308 ABI_64_P (dynobj) ? 3 : 2))
7309 goto error_alignment;
7310
7311 htab->plt_got_eh_frame = sec;
7312 }
7313
f2c29a16 7314 if (htab->plt_second != NULL)
38b12349
L		 7315 {
7316 sec = bfd_make_section_anyway_with_flags (dynobj,
7317 ".eh_frame",
7318 flags);
7319 if (sec == NULL)
7320 info->callbacks->einfo (_("%F: failed to create BND PLT .eh_frame section\n"));
7321
7322 if (!bfd_set_section_alignment (dynobj, sec, 3))
7323 goto error_alignment;
7324
f2c29a16 7325 htab->plt_second_eh_frame = sec;
38b12349
L		 7326 }
7327 }
7328 }
7329
7330 if (normal_target)
7331 {
7332 /* The .iplt section is used for IFUNC symbols in static
7333 executables. */
7334 sec = htab->elf.iplt;
7335 if (sec != NULL
7336 && !bfd_set_section_alignment (sec->owner, sec,
7337 plt_alignment))
7338 goto error_alignment;
7339 }
7340
7341 return pbfd;
7342}
7343
9a2e389a 7344static const struct bfd_elf_special_section
46bed679 7345elf_x86_64_special_sections[]=
3b22753a 7346{
0112cd26
NC		 7347 { STRING_COMMA_LEN (".gnu.linkonce.lb"), -2, SHT_NOBITS, SHF_ALLOC + SHF_WRITE + SHF_X86_64_LARGE},
7348 { STRING_COMMA_LEN (".gnu.linkonce.lr"), -2, SHT_PROGBITS, SHF_ALLOC + SHF_X86_64_LARGE},
7349 { STRING_COMMA_LEN (".gnu.linkonce.lt"), -2, SHT_PROGBITS, SHF_ALLOC + SHF_EXECINSTR + SHF_X86_64_LARGE},
7350 { STRING_COMMA_LEN (".lbss"), -2, SHT_NOBITS, SHF_ALLOC + SHF_WRITE + SHF_X86_64_LARGE},
7351 { STRING_COMMA_LEN (".ldata"), -2, SHT_PROGBITS, SHF_ALLOC + SHF_WRITE + SHF_X86_64_LARGE},
7352 { STRING_COMMA_LEN (".lrodata"), -2, SHT_PROGBITS, SHF_ALLOC + SHF_X86_64_LARGE},
7353 { NULL, 0, 0, 0, 0 }
3b22753a
L		 7354};
7355
6d00b590 7356#define TARGET_LITTLE_SYM x86_64_elf64_vec
70256ad8
AJ		 7357#define TARGET_LITTLE_NAME "elf64-x86-64"
7358#define ELF_ARCH bfd_arch_i386
ae95ffa6 7359#define ELF_TARGET_ID X86_64_ELF_DATA
70256ad8 7360#define ELF_MACHINE_CODE EM_X86_64
f7661549 7361#define ELF_MAXPAGESIZE 0x200000
2043964e 7362#define ELF_MINPAGESIZE 0x1000
24718e3b 7363#define ELF_COMMONPAGESIZE 0x1000
70256ad8
AJ		 7364
7365#define elf_backend_can_gc_sections 1
51b64d56 7366#define elf_backend_can_refcount 1
70256ad8
AJ		 7367#define elf_backend_want_got_plt 1
7368#define elf_backend_plt_readonly 1
7369#define elf_backend_want_plt_sym 0
7370#define elf_backend_got_header_size (GOT_ENTRY_SIZE*3)
b491616a 7371#define elf_backend_rela_normal 1
e41b3a13 7372#define elf_backend_plt_alignment 4
f7483970 7373#define elf_backend_extern_protected_data 1
bedfd056 7374#define elf_backend_caches_rawsize 1
64f52338 7375#define elf_backend_dtrel_excludes_plt 1
5474d94f 7376#define elf_backend_want_dynrelro 1
70256ad8 7377
351f65ca 7378#define elf_info_to_howto elf_x86_64_info_to_howto
70256ad8 7379
70256ad8 7380#define bfd_elf64_bfd_link_hash_table_create \
351f65ca 7381 elf_x86_64_link_hash_table_create
351f65ca 7382#define bfd_elf64_bfd_reloc_type_lookup elf_x86_64_reloc_type_lookup
157090f7 7383#define bfd_elf64_bfd_reloc_name_lookup \
351f65ca 7384 elf_x86_64_reloc_name_lookup
70256ad8 7385
351f65ca 7386#define elf_backend_adjust_dynamic_symbol elf_x86_64_adjust_dynamic_symbol
c543bf9a 7387#define elf_backend_relocs_compatible elf_x86_64_relocs_compatible
351f65ca
L		 7388#define elf_backend_check_relocs elf_x86_64_check_relocs
7389#define elf_backend_copy_indirect_symbol elf_x86_64_copy_indirect_symbol
38b12349 7390#define elf_backend_create_dynamic_sections _bfd_elf_create_dynamic_sections
351f65ca
L		 7391#define elf_backend_finish_dynamic_sections elf_x86_64_finish_dynamic_sections
7392#define elf_backend_finish_dynamic_symbol elf_x86_64_finish_dynamic_symbol
233cc9c1 7393#define elf_backend_output_arch_local_syms elf_x86_64_output_arch_local_syms
351f65ca 7394#define elf_backend_gc_mark_hook elf_x86_64_gc_mark_hook
351f65ca
L		 7395#define elf_backend_grok_prstatus elf_x86_64_grok_prstatus
7396#define elf_backend_grok_psinfo elf_x86_64_grok_psinfo
8fd79e71
L		 7397#ifdef CORE_HEADER
7398#define elf_backend_write_core_note elf_x86_64_write_core_note
7399#endif
351f65ca
L		 7400#define elf_backend_reloc_type_class elf_x86_64_reloc_type_class
7401#define elf_backend_relocate_section elf_x86_64_relocate_section
7402#define elf_backend_size_dynamic_sections elf_x86_64_size_dynamic_sections
7403#define elf_backend_always_size_sections elf_x86_64_always_size_sections
74541ad4 7404#define elf_backend_init_index_section _bfd_elf_init_1_index_section
407443a3 7405#define elf_backend_object_p elf64_x86_64_elf_object_p
351f65ca 7406#define bfd_elf64_mkobject elf_x86_64_mkobject
0ff2b86e 7407#define bfd_elf64_get_synthetic_symtab elf_x86_64_get_synthetic_symtab
8d88c4ca 7408
d2b2c203 7409#define elf_backend_section_from_shdr \
351f65ca 7410 elf_x86_64_section_from_shdr
d2b2c203 7411
3b22753a 7412#define elf_backend_section_from_bfd_section \
351f65ca 7413 elf_x86_64_elf_section_from_bfd_section
3b22753a 7414#define elf_backend_add_symbol_hook \
351f65ca 7415 elf_x86_64_add_symbol_hook
3b22753a 7416#define elf_backend_symbol_processing \
351f65ca 7417 elf_x86_64_symbol_processing
3b22753a 7418#define elf_backend_common_section_index \
351f65ca 7419 elf_x86_64_common_section_index
3b22753a 7420#define elf_backend_common_section \
351f65ca 7421 elf_x86_64_common_section
3b22753a 7422#define elf_backend_common_definition \
351f65ca 7423 elf_x86_64_common_definition
3b22753a 7424#define elf_backend_merge_symbol \
351f65ca 7425 elf_x86_64_merge_symbol
3b22753a 7426#define elf_backend_special_sections \
351f65ca 7427 elf_x86_64_special_sections
3b22753a 7428#define elf_backend_additional_program_headers \
351f65ca 7429 elf_x86_64_additional_program_headers
fdc90cb4 7430#define elf_backend_hash_symbol \
351f65ca 7431 elf_x86_64_hash_symbol
8f79b794
L		 7432#define elf_backend_omit_section_dynsym \
7433 ((bfd_boolean (*) (bfd *, struct bfd_link_info *, asection *)) bfd_true)
aec6b87e
L		 7434#define elf_backend_fixup_symbol \
7435 elf_x86_64_fixup_symbol
46bed679
L		 7436#define elf_backend_parse_gnu_properties \
7437 elf_x86_64_parse_gnu_properties
7438#define elf_backend_merge_gnu_properties \
7439 elf_x86_64_merge_gnu_properties
38b12349
L		 7440#define elf_backend_setup_gnu_properties \
7441 elf_x86_64_link_setup_gnu_properties
3b22753a 7442
8d88c4ca 7443#include "elf64-target.h"
9d7cbccd 7444
6036f486
ES		 7445/* CloudABI support. */
7446
7447#undef TARGET_LITTLE_SYM
7448#define TARGET_LITTLE_SYM x86_64_elf64_cloudabi_vec
7449#undef TARGET_LITTLE_NAME
7450#define TARGET_LITTLE_NAME "elf64-x86-64-cloudabi"
7451
7452#undef ELF_OSABI
7453#define ELF_OSABI ELFOSABI_CLOUDABI
7454
7455#undef elf64_bed
7456#define elf64_bed elf64_x86_64_cloudabi_bed
7457
7458#include "elf64-target.h"
7459
9d7cbccd
NC		 7460/* FreeBSD support. */
7461
7462#undef TARGET_LITTLE_SYM
6d00b590 7463#define TARGET_LITTLE_SYM x86_64_elf64_fbsd_vec
9d7cbccd
NC		 7464#undef TARGET_LITTLE_NAME
7465#define TARGET_LITTLE_NAME "elf64-x86-64-freebsd"
7466
d1036acb
L		 7467#undef ELF_OSABI
7468#define ELF_OSABI ELFOSABI_FREEBSD
9d7cbccd 7469
9d7cbccd
NC		 7470#undef elf64_bed
7471#define elf64_bed elf64_x86_64_fbsd_bed
7472
7473#include "elf64-target.h"
8a9036a4 7474
a6cc6b3b
RO		 7475/* Solaris 2 support. */
7476
7477#undef TARGET_LITTLE_SYM
6d00b590 7478#define TARGET_LITTLE_SYM x86_64_elf64_sol2_vec
a6cc6b3b
RO		 7479#undef TARGET_LITTLE_NAME
7480#define TARGET_LITTLE_NAME "elf64-x86-64-sol2"
7481
7482/* Restore default: we cannot use ELFOSABI_SOLARIS, otherwise ELFOSABI_NONE
7483 objects won't be recognized. */
7484#undef ELF_OSABI
7485
7486#undef elf64_bed
7487#define elf64_bed elf64_x86_64_sol2_bed
7488
7dc98aea
RO		 7489/* The 64-bit static TLS arena size is rounded to the nearest 16-byte
7490 boundary. */
84865015 7491#undef elf_backend_static_tls_alignment
7dc98aea
RO		 7492#define elf_backend_static_tls_alignment 16
7493
a6cc6b3b
RO		 7494/* The Solaris 2 ABI requires a plt symbol on all platforms.
7495
7496 Cf. Linker and Libraries Guide, Ch. 2, Link-Editor, Generating the Output
7497 File, p.63. */
84865015 7498#undef elf_backend_want_plt_sym
a6cc6b3b
RO		 7499#define elf_backend_want_plt_sym 1
7500
84865015
NC		 7501#undef elf_backend_strtab_flags
7502#define elf_backend_strtab_flags SHF_STRINGS
7503
7504static bfd_boolean
5522f910
NC		 7505elf64_x86_64_copy_solaris_special_section_fields (const bfd *ibfd ATTRIBUTE_UNUSED,
7506 bfd *obfd ATTRIBUTE_UNUSED,
7507 const Elf_Internal_Shdr *isection ATTRIBUTE_UNUSED,
7508 Elf_Internal_Shdr *osection ATTRIBUTE_UNUSED)
84865015
NC		 7509{
7510 /* PR 19938: FIXME: Need to add code for setting the sh_info
7511 and sh_link fields of Solaris specific section types. */
7512 return FALSE;
7513}
7514
5522f910
NC		 7515#undef elf_backend_copy_special_section_fields
7516#define elf_backend_copy_special_section_fields elf64_x86_64_copy_solaris_special_section_fields
84865015 7517
a6cc6b3b
RO		 7518#include "elf64-target.h"
7519
8059fb19
RM		 7520/* Native Client support. */
7521
64b384e1
RM		 7522static bfd_boolean
7523elf64_x86_64_nacl_elf_object_p (bfd *abfd)
7524{
7525 /* Set the right machine number for a NaCl x86-64 ELF64 file. */
7526 bfd_default_set_arch_mach (abfd, bfd_arch_i386, bfd_mach_x86_64_nacl);
7527 return TRUE;
7528}
7529
8059fb19 7530#undef TARGET_LITTLE_SYM
6d00b590 7531#define TARGET_LITTLE_SYM x86_64_elf64_nacl_vec
8059fb19
RM		 7532#undef TARGET_LITTLE_NAME
7533#define TARGET_LITTLE_NAME "elf64-x86-64-nacl"
7534#undef elf64_bed
7535#define elf64_bed elf64_x86_64_nacl_bed
7536
7537#undef ELF_MAXPAGESIZE
7538#undef ELF_MINPAGESIZE
7539#undef ELF_COMMONPAGESIZE
7540#define ELF_MAXPAGESIZE 0x10000
7541#define ELF_MINPAGESIZE 0x10000
7542#define ELF_COMMONPAGESIZE 0x10000
7543
7544/* Restore defaults. */
7545#undef ELF_OSABI
7546#undef elf_backend_static_tls_alignment
7547#undef elf_backend_want_plt_sym
7548#define elf_backend_want_plt_sym 0
84865015 7549#undef elf_backend_strtab_flags
5522f910 7550#undef elf_backend_copy_special_section_fields
8059fb19
RM		 7551
7552/* NaCl uses substantially different PLT entries for the same effects. */
7553
7554#undef elf_backend_plt_alignment
7555#define elf_backend_plt_alignment 5
7556#define NACL_PLT_ENTRY_SIZE 64
7557#define NACLMASK 0xe0 /* 32-byte alignment mask. */
7558
7559static const bfd_byte elf_x86_64_nacl_plt0_entry[NACL_PLT_ENTRY_SIZE] =
7560 {
7561 0xff, 0x35, 8, 0, 0, 0, /* pushq GOT+8(%rip) */
7562 0x4c, 0x8b, 0x1d, 16, 0, 0, 0, /* mov GOT+16(%rip), %r11 */
7563 0x41, 0x83, 0xe3, NACLMASK, /* and $-32, %r11d */
7564 0x4d, 0x01, 0xfb, /* add %r15, %r11 */
7565 0x41, 0xff, 0xe3, /* jmpq *%r11 */
7566
ea2d813e 7567 /* 9-byte nop sequence to pad out to the next 32-byte boundary. */
70cc877f 7568 0x66, 0x0f, 0x1f, 0x84, 0, 0, 0, 0, 0, /* nopw 0x0(%rax,%rax,1) */
ea2d813e
RM		 7569
7570 /* 32 bytes of nop to pad out to the standard size. */
3ddf1bdd 7571 0x66, 0x66, 0x66, 0x66, 0x66, 0x66, /* excess data16 prefixes */
8059fb19 7572 0x2e, 0x0f, 0x1f, 0x84, 0, 0, 0, 0, 0, /* nopw %cs:0x0(%rax,%rax,1) */
3ddf1bdd 7573 0x66, 0x66, 0x66, 0x66, 0x66, 0x66, /* excess data16 prefixes */
8059fb19 7574 0x2e, 0x0f, 0x1f, 0x84, 0, 0, 0, 0, 0, /* nopw %cs:0x0(%rax,%rax,1) */
3ddf1bdd 7575 0x66, /* excess data16 prefix */
ea2d813e 7576 0x90 /* nop */
8059fb19
RM		 7577 };
7578
7579static const bfd_byte elf_x86_64_nacl_plt_entry[NACL_PLT_ENTRY_SIZE] =
7580 {
7581 0x4c, 0x8b, 0x1d, 0, 0, 0, 0, /* mov name@GOTPCREL(%rip),%r11 */
7582 0x41, 0x83, 0xe3, NACLMASK, /* and $-32, %r11d */
7583 0x4d, 0x01, 0xfb, /* add %r15, %r11 */
7584 0x41, 0xff, 0xe3, /* jmpq *%r11 */
7585
7586 /* 15-byte nop sequence to pad out to the next 32-byte boundary. */
3ddf1bdd 7587 0x66, 0x66, 0x66, 0x66, 0x66, 0x66, /* excess data16 prefixes */
8059fb19
RM		 7588 0x2e, 0x0f, 0x1f, 0x84, 0, 0, 0, 0, 0, /* nopw %cs:0x0(%rax,%rax,1) */
7589
7590 /* Lazy GOT entries point here (32-byte aligned). */
7591 0x68, /* pushq immediate */
7592 0, 0, 0, 0, /* replaced with index into relocation table. */
7593 0xe9, /* jmp relative */
7594 0, 0, 0, 0, /* replaced with offset to start of .plt0. */
7595
7596 /* 22 bytes of nop to pad out to the standard size. */
3ddf1bdd 7597 0x66, 0x66, 0x66, 0x66, 0x66, 0x66, /* excess data16 prefixes */
8059fb19
RM		 7598 0x2e, 0x0f, 0x1f, 0x84, 0, 0, 0, 0, 0, /* nopw %cs:0x0(%rax,%rax,1) */
7599 0x0f, 0x1f, 0x80, 0, 0, 0, 0, /* nopl 0x0(%rax) */
7600 };
7601
7602/* .eh_frame covering the .plt section. */
7603
7604static const bfd_byte elf_x86_64_nacl_eh_frame_plt[] =
7605 {
7606#if (PLT_CIE_LENGTH != 20 \
7607 || PLT_FDE_LENGTH != 36 \
7608 || PLT_FDE_START_OFFSET != 4 + PLT_CIE_LENGTH + 8 \
7609 || PLT_FDE_LEN_OFFSET != 4 + PLT_CIE_LENGTH + 12)
7610# error "Need elf_x86_64_backend_data parameters for eh_frame_plt offsets!"
7611#endif
7612 PLT_CIE_LENGTH, 0, 0, 0, /* CIE length */
7613 0, 0, 0, 0, /* CIE ID */
7614 1, /* CIE version */
7615 'z', 'R', 0, /* Augmentation string */
7616 1, /* Code alignment factor */
7617 0x78, /* Data alignment factor */
7618 16, /* Return address column */
7619 1, /* Augmentation size */
7620 DW_EH_PE_pcrel | DW_EH_PE_sdata4, /* FDE encoding */
7621 DW_CFA_def_cfa, 7, 8, /* DW_CFA_def_cfa: r7 (rsp) ofs 8 */
7622 DW_CFA_offset + 16, 1, /* DW_CFA_offset: r16 (rip) at cfa-8 */
7623 DW_CFA_nop, DW_CFA_nop,
7624
7625 PLT_FDE_LENGTH, 0, 0, 0, /* FDE length */
7626 PLT_CIE_LENGTH + 8, 0, 0, 0,/* CIE pointer */
7627 0, 0, 0, 0, /* R_X86_64_PC32 .plt goes here */
7628 0, 0, 0, 0, /* .plt size goes here */
7629 0, /* Augmentation size */
7630 DW_CFA_def_cfa_offset, 16, /* DW_CFA_def_cfa_offset: 16 */
7631 DW_CFA_advance_loc + 6, /* DW_CFA_advance_loc: 6 to __PLT__+6 */
7632 DW_CFA_def_cfa_offset, 24, /* DW_CFA_def_cfa_offset: 24 */
7633 DW_CFA_advance_loc + 58, /* DW_CFA_advance_loc: 58 to __PLT__+64 */
7634 DW_CFA_def_cfa_expression, /* DW_CFA_def_cfa_expression */
7635 13, /* Block length */
7636 DW_OP_breg7, 8, /* DW_OP_breg7 (rsp): 8 */
7637 DW_OP_breg16, 0, /* DW_OP_breg16 (rip): 0 */
7638 DW_OP_const1u, 63, DW_OP_and, DW_OP_const1u, 37, DW_OP_ge,
7639 DW_OP_lit3, DW_OP_shl, DW_OP_plus,
7640 DW_CFA_nop, DW_CFA_nop
7641 };
7642
38b12349 7643static const struct elf_x86_64_lazy_plt_layout elf_x86_64_nacl_plt =
8059fb19
RM		 7644 {
7645 elf_x86_64_nacl_plt0_entry, /* plt0_entry */
7646 elf_x86_64_nacl_plt_entry, /* plt_entry */
7647 NACL_PLT_ENTRY_SIZE, /* plt_entry_size */
7648 2, /* plt0_got1_offset */
7649 9, /* plt0_got2_offset */
7650 13, /* plt0_got2_insn_end */
7651 3, /* plt_got_offset */
7652 33, /* plt_reloc_offset */
7653 38, /* plt_plt_offset */
7654 7, /* plt_got_insn_size */
7655 42, /* plt_plt_insn_end */
7656 32, /* plt_lazy_offset */
7657 elf_x86_64_nacl_eh_frame_plt, /* eh_frame_plt */
38b12349
L		 7658 sizeof (elf_x86_64_nacl_eh_frame_plt) /* eh_frame_plt_size */
7659 };
7660
7661static const struct elf_x86_64_backend_data elf_x86_64_nacl_arch_bed =
7662 {
7663 is_nacl /* os */
8059fb19
RM		 7664 };
7665
7666#undef elf_backend_arch_data
7667#define elf_backend_arch_data &elf_x86_64_nacl_arch_bed
7668
64b384e1
RM		 7669#undef elf_backend_object_p
7670#define elf_backend_object_p elf64_x86_64_nacl_elf_object_p
5a68afcf
RM		 7671#undef elf_backend_modify_segment_map
7672#define elf_backend_modify_segment_map nacl_modify_segment_map
7673#undef elf_backend_modify_program_headers
7674#define elf_backend_modify_program_headers nacl_modify_program_headers
887badb3
RM		 7675#undef elf_backend_final_write_processing
7676#define elf_backend_final_write_processing nacl_final_write_processing
5a68afcf 7677
8059fb19
RM		 7678#include "elf64-target.h"
7679
7680/* Native Client x32 support. */
7681
64b384e1
RM		 7682static bfd_boolean
7683elf32_x86_64_nacl_elf_object_p (bfd *abfd)
7684{
7685 /* Set the right machine number for a NaCl x86-64 ELF32 file. */
7686 bfd_default_set_arch_mach (abfd, bfd_arch_i386, bfd_mach_x64_32_nacl);
7687 return TRUE;
7688}
7689
8059fb19 7690#undef TARGET_LITTLE_SYM
6d00b590 7691#define TARGET_LITTLE_SYM x86_64_elf32_nacl_vec
8059fb19
RM		 7692#undef TARGET_LITTLE_NAME
7693#define TARGET_LITTLE_NAME "elf32-x86-64-nacl"
7694#undef elf32_bed
7695#define elf32_bed elf32_x86_64_nacl_bed
7696
7697#define bfd_elf32_bfd_link_hash_table_create \
7698 elf_x86_64_link_hash_table_create
8059fb19
RM		 7699#define bfd_elf32_bfd_reloc_type_lookup \
7700 elf_x86_64_reloc_type_lookup
7701#define bfd_elf32_bfd_reloc_name_lookup \
7702 elf_x86_64_reloc_name_lookup
7703#define bfd_elf32_mkobject \
7704 elf_x86_64_mkobject
b7365e5d
L		 7705#define bfd_elf32_get_synthetic_symtab \
7706 elf_x86_64_get_synthetic_symtab
8059fb19
RM		 7707
7708#undef elf_backend_object_p
7709#define elf_backend_object_p \
64b384e1 7710 elf32_x86_64_nacl_elf_object_p
8059fb19
RM		 7711
7712#undef elf_backend_bfd_from_remote_memory
7713#define elf_backend_bfd_from_remote_memory \
7714 _bfd_elf32_bfd_from_remote_memory
7715
7716#undef elf_backend_size_info
7717#define elf_backend_size_info \
7718 _bfd_elf32_size_info
7719
7720#include "elf32-target.h"
7721
7722/* Restore defaults. */
5a68afcf 7723#undef elf_backend_object_p
8059fb19 7724#define elf_backend_object_p elf64_x86_64_elf_object_p
5a68afcf
RM		 7725#undef elf_backend_bfd_from_remote_memory
7726#undef elf_backend_size_info
7727#undef elf_backend_modify_segment_map
7728#undef elf_backend_modify_program_headers
887badb3 7729#undef elf_backend_final_write_processing
8059fb19 7730
8a9036a4
L		 7731/* Intel L1OM support. */
7732
7733static bfd_boolean
7734elf64_l1om_elf_object_p (bfd *abfd)
7735{
7736 /* Set the right machine number for an L1OM elf64 file. */
7737 bfd_default_set_arch_mach (abfd, bfd_arch_l1om, bfd_mach_l1om);
7738 return TRUE;
7739}
7740
7741#undef TARGET_LITTLE_SYM
6d00b590 7742#define TARGET_LITTLE_SYM l1om_elf64_vec
8a9036a4
L		 7743#undef TARGET_LITTLE_NAME
7744#define TARGET_LITTLE_NAME "elf64-l1om"
7745#undef ELF_ARCH
7746#define ELF_ARCH bfd_arch_l1om
7747
7748#undef ELF_MACHINE_CODE
7749#define ELF_MACHINE_CODE EM_L1OM
7750
7751#undef ELF_OSABI
7752
7753#undef elf64_bed
7754#define elf64_bed elf64_l1om_bed
7755
7756#undef elf_backend_object_p
7757#define elf_backend_object_p elf64_l1om_elf_object_p
7758
8059fb19
RM		 7759/* Restore defaults. */
7760#undef ELF_MAXPAGESIZE
7761#undef ELF_MINPAGESIZE
7762#undef ELF_COMMONPAGESIZE
7763#define ELF_MAXPAGESIZE 0x200000
7764#define ELF_MINPAGESIZE 0x1000
7765#define ELF_COMMONPAGESIZE 0x1000
7766#undef elf_backend_plt_alignment
7767#define elf_backend_plt_alignment 4
7768#undef elf_backend_arch_data
7769#define elf_backend_arch_data &elf_x86_64_arch_bed
1a0c107f 7770
8a9036a4
L		 7771#include "elf64-target.h"
7772
7773/* FreeBSD L1OM support. */
7774
7775#undef TARGET_LITTLE_SYM
6d00b590 7776#define TARGET_LITTLE_SYM l1om_elf64_fbsd_vec
8a9036a4
L		 7777#undef TARGET_LITTLE_NAME
7778#define TARGET_LITTLE_NAME "elf64-l1om-freebsd"
7779
7780#undef ELF_OSABI
7781#define ELF_OSABI ELFOSABI_FREEBSD
7782
7783#undef elf64_bed
7784#define elf64_bed elf64_l1om_fbsd_bed
7785
8a9036a4 7786#include "elf64-target.h"
351f65ca 7787
7a9068fe
L		 7788/* Intel K1OM support. */
7789
7790static bfd_boolean
7791elf64_k1om_elf_object_p (bfd *abfd)
7792{
7793 /* Set the right machine number for an K1OM elf64 file. */
7794 bfd_default_set_arch_mach (abfd, bfd_arch_k1om, bfd_mach_k1om);
7795 return TRUE;
7796}
7797
7798#undef TARGET_LITTLE_SYM
6d00b590 7799#define TARGET_LITTLE_SYM k1om_elf64_vec
7a9068fe
L		 7800#undef TARGET_LITTLE_NAME
7801#define TARGET_LITTLE_NAME "elf64-k1om"
7802#undef ELF_ARCH
7803#define ELF_ARCH bfd_arch_k1om
7804
7805#undef ELF_MACHINE_CODE
7806#define ELF_MACHINE_CODE EM_K1OM
7807
7808#undef ELF_OSABI
7809
7810#undef elf64_bed
7811#define elf64_bed elf64_k1om_bed
7812
7813#undef elf_backend_object_p
7814#define elf_backend_object_p elf64_k1om_elf_object_p
7815
7816#undef elf_backend_static_tls_alignment
7817
7818#undef elf_backend_want_plt_sym
7819#define elf_backend_want_plt_sym 0
7820
7821#include "elf64-target.h"
7822
7823/* FreeBSD K1OM support. */
7824
7825#undef TARGET_LITTLE_SYM
6d00b590 7826#define TARGET_LITTLE_SYM k1om_elf64_fbsd_vec
7a9068fe
L		 7827#undef TARGET_LITTLE_NAME
7828#define TARGET_LITTLE_NAME "elf64-k1om-freebsd"
7829
7830#undef ELF_OSABI
7831#define ELF_OSABI ELFOSABI_FREEBSD
7832
7833#undef elf64_bed
7834#define elf64_bed elf64_k1om_fbsd_bed
7835
7836#include "elf64-target.h"
7837
351f65ca
L		 7838/* 32bit x86-64 support. */
7839
351f65ca 7840#undef TARGET_LITTLE_SYM
6d00b590 7841#define TARGET_LITTLE_SYM x86_64_elf32_vec
351f65ca
L		 7842#undef TARGET_LITTLE_NAME
7843#define TARGET_LITTLE_NAME "elf32-x86-64"
8059fb19 7844#undef elf32_bed
351f65ca
L		 7845
7846#undef ELF_ARCH
7847#define ELF_ARCH bfd_arch_i386
7848
7849#undef ELF_MACHINE_CODE
7850#define ELF_MACHINE_CODE EM_X86_64
7851
351f65ca
L		 7852#undef ELF_OSABI
7853
351f65ca
L		 7854#undef elf_backend_object_p
7855#define elf_backend_object_p \
7856 elf32_x86_64_elf_object_p
7857
7858#undef elf_backend_bfd_from_remote_memory
7859#define elf_backend_bfd_from_remote_memory \
7860 _bfd_elf32_bfd_from_remote_memory
7861
7862#undef elf_backend_size_info
7863#define elf_backend_size_info \
7864 _bfd_elf32_size_info
7865
7866#include "elf32-target.h"
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