Convert mov to lea for loading local function address
[deliverable/binutils-gdb.git] / bfd / elf64-x86-64.c
CommitLineData
351f65ca 1/* X86-64 specific support for ELF
4dfe6ac6 2 Copyright 2000, 2001, 2002, 2003, 2004, 2005, 2006, 2007, 2008, 2009,
3ce231f8 3 2010, 2011, 2012
9f973f28 4 Free Software Foundation, Inc.
8d88c4ca
NC
5 Contributed by Jan Hubicka <jh@suse.cz>.
6
ae9a127f 7 This file is part of BFD, the Binary File Descriptor library.
8d88c4ca 8
ae9a127f
NC
9 This program is free software; you can redistribute it and/or modify
10 it under the terms of the GNU General Public License as published by
cd123cb7 11 the Free Software Foundation; either version 3 of the License, or
ae9a127f 12 (at your option) any later version.
8d88c4ca 13
ae9a127f
NC
14 This program is distributed in the hope that it will be useful,
15 but WITHOUT ANY WARRANTY; without even the implied warranty of
16 MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
17 GNU General Public License for more details.
8d88c4ca 18
ae9a127f
NC
19 You should have received a copy of the GNU General Public License
20 along with this program; if not, write to the Free Software
cd123cb7
NC
21 Foundation, Inc., 51 Franklin Street - Fifth Floor, Boston,
22 MA 02110-1301, USA. */
8d88c4ca 23
8d88c4ca 24#include "sysdep.h"
3db64b00 25#include "bfd.h"
c434dee6 26#include "bfdlink.h"
8d88c4ca
NC
27#include "libbfd.h"
28#include "elf-bfd.h"
5a68afcf 29#include "elf-nacl.h"
142411ca 30#include "bfd_stdint.h"
c25bc9fc
L
31#include "objalloc.h"
32#include "hashtab.h"
e41b3a13 33#include "dwarf2.h"
d7921315 34#include "libiberty.h"
8d88c4ca
NC
35
36#include "elf/x86-64.h"
37
8fd79e71
L
38#ifdef CORE_HEADER
39#include <stdarg.h>
40#include CORE_HEADER
41#endif
42
8d88c4ca
NC
43/* In case we're on a 32-bit machine, construct a 64-bit "-1" value. */
44#define MINUS_ONE (~ (bfd_vma) 0)
45
351f65ca
L
46/* Since both 32-bit and 64-bit x86-64 encode relocation type in the
47 identical manner, we use ELF32_R_TYPE instead of ELF64_R_TYPE to get
48 relocation type. We also use ELF_ST_TYPE instead of ELF64_ST_TYPE
49 since they are the same. */
50
51#define ABI_64_P(abfd) \
52 (get_elf_backend_data (abfd)->s->elfclass == ELFCLASS64)
53
8d88c4ca 54/* The relocation "howto" table. Order of fields:
7b81dfbb
AJ
55 type, rightshift, size, bitsize, pc_relative, bitpos, complain_on_overflow,
56 special_function, name, partial_inplace, src_mask, dst_mask, pcrel_offset. */
70256ad8
AJ
57static reloc_howto_type x86_64_elf_howto_table[] =
58{
b34976b6
AM
59 HOWTO(R_X86_64_NONE, 0, 0, 0, FALSE, 0, complain_overflow_dont,
60 bfd_elf_generic_reloc, "R_X86_64_NONE", FALSE, 0x00000000, 0x00000000,
61 FALSE),
62 HOWTO(R_X86_64_64, 0, 4, 64, FALSE, 0, complain_overflow_bitfield,
63 bfd_elf_generic_reloc, "R_X86_64_64", FALSE, MINUS_ONE, MINUS_ONE,
64 FALSE),
65 HOWTO(R_X86_64_PC32, 0, 2, 32, TRUE, 0, complain_overflow_signed,
66 bfd_elf_generic_reloc, "R_X86_64_PC32", FALSE, 0xffffffff, 0xffffffff,
67 TRUE),
68 HOWTO(R_X86_64_GOT32, 0, 2, 32, FALSE, 0, complain_overflow_signed,
69 bfd_elf_generic_reloc, "R_X86_64_GOT32", FALSE, 0xffffffff, 0xffffffff,
70 FALSE),
71 HOWTO(R_X86_64_PLT32, 0, 2, 32, TRUE, 0, complain_overflow_signed,
72 bfd_elf_generic_reloc, "R_X86_64_PLT32", FALSE, 0xffffffff, 0xffffffff,
73 TRUE),
74 HOWTO(R_X86_64_COPY, 0, 2, 32, FALSE, 0, complain_overflow_bitfield,
75 bfd_elf_generic_reloc, "R_X86_64_COPY", FALSE, 0xffffffff, 0xffffffff,
76 FALSE),
77 HOWTO(R_X86_64_GLOB_DAT, 0, 4, 64, FALSE, 0, complain_overflow_bitfield,
78 bfd_elf_generic_reloc, "R_X86_64_GLOB_DAT", FALSE, MINUS_ONE,
79 MINUS_ONE, FALSE),
80 HOWTO(R_X86_64_JUMP_SLOT, 0, 4, 64, FALSE, 0, complain_overflow_bitfield,
81 bfd_elf_generic_reloc, "R_X86_64_JUMP_SLOT", FALSE, MINUS_ONE,
82 MINUS_ONE, FALSE),
83 HOWTO(R_X86_64_RELATIVE, 0, 4, 64, FALSE, 0, complain_overflow_bitfield,
84 bfd_elf_generic_reloc, "R_X86_64_RELATIVE", FALSE, MINUS_ONE,
85 MINUS_ONE, FALSE),
86 HOWTO(R_X86_64_GOTPCREL, 0, 2, 32, TRUE, 0, complain_overflow_signed,
87 bfd_elf_generic_reloc, "R_X86_64_GOTPCREL", FALSE, 0xffffffff,
88 0xffffffff, TRUE),
89 HOWTO(R_X86_64_32, 0, 2, 32, FALSE, 0, complain_overflow_unsigned,
90 bfd_elf_generic_reloc, "R_X86_64_32", FALSE, 0xffffffff, 0xffffffff,
91 FALSE),
92 HOWTO(R_X86_64_32S, 0, 2, 32, FALSE, 0, complain_overflow_signed,
93 bfd_elf_generic_reloc, "R_X86_64_32S", FALSE, 0xffffffff, 0xffffffff,
94 FALSE),
95 HOWTO(R_X86_64_16, 0, 1, 16, FALSE, 0, complain_overflow_bitfield,
96 bfd_elf_generic_reloc, "R_X86_64_16", FALSE, 0xffff, 0xffff, FALSE),
b0360d8c 97 HOWTO(R_X86_64_PC16,0, 1, 16, TRUE, 0, complain_overflow_bitfield,
b34976b6 98 bfd_elf_generic_reloc, "R_X86_64_PC16", FALSE, 0xffff, 0xffff, TRUE),
ac2aa337 99 HOWTO(R_X86_64_8, 0, 0, 8, FALSE, 0, complain_overflow_bitfield,
b34976b6
AM
100 bfd_elf_generic_reloc, "R_X86_64_8", FALSE, 0xff, 0xff, FALSE),
101 HOWTO(R_X86_64_PC8, 0, 0, 8, TRUE, 0, complain_overflow_signed,
102 bfd_elf_generic_reloc, "R_X86_64_PC8", FALSE, 0xff, 0xff, TRUE),
103 HOWTO(R_X86_64_DTPMOD64, 0, 4, 64, FALSE, 0, complain_overflow_bitfield,
104 bfd_elf_generic_reloc, "R_X86_64_DTPMOD64", FALSE, MINUS_ONE,
105 MINUS_ONE, FALSE),
106 HOWTO(R_X86_64_DTPOFF64, 0, 4, 64, FALSE, 0, complain_overflow_bitfield,
107 bfd_elf_generic_reloc, "R_X86_64_DTPOFF64", FALSE, MINUS_ONE,
108 MINUS_ONE, FALSE),
109 HOWTO(R_X86_64_TPOFF64, 0, 4, 64, FALSE, 0, complain_overflow_bitfield,
110 bfd_elf_generic_reloc, "R_X86_64_TPOFF64", FALSE, MINUS_ONE,
111 MINUS_ONE, FALSE),
112 HOWTO(R_X86_64_TLSGD, 0, 2, 32, TRUE, 0, complain_overflow_signed,
113 bfd_elf_generic_reloc, "R_X86_64_TLSGD", FALSE, 0xffffffff,
114 0xffffffff, TRUE),
115 HOWTO(R_X86_64_TLSLD, 0, 2, 32, TRUE, 0, complain_overflow_signed,
116 bfd_elf_generic_reloc, "R_X86_64_TLSLD", FALSE, 0xffffffff,
117 0xffffffff, TRUE),
ac2aa337 118 HOWTO(R_X86_64_DTPOFF32, 0, 2, 32, FALSE, 0, complain_overflow_signed,
b34976b6
AM
119 bfd_elf_generic_reloc, "R_X86_64_DTPOFF32", FALSE, 0xffffffff,
120 0xffffffff, FALSE),
121 HOWTO(R_X86_64_GOTTPOFF, 0, 2, 32, TRUE, 0, complain_overflow_signed,
122 bfd_elf_generic_reloc, "R_X86_64_GOTTPOFF", FALSE, 0xffffffff,
123 0xffffffff, TRUE),
124 HOWTO(R_X86_64_TPOFF32, 0, 2, 32, FALSE, 0, complain_overflow_signed,
125 bfd_elf_generic_reloc, "R_X86_64_TPOFF32", FALSE, 0xffffffff,
126 0xffffffff, FALSE),
d6ab8113
JB
127 HOWTO(R_X86_64_PC64, 0, 4, 64, TRUE, 0, complain_overflow_bitfield,
128 bfd_elf_generic_reloc, "R_X86_64_PC64", FALSE, MINUS_ONE, MINUS_ONE,
129 TRUE),
130 HOWTO(R_X86_64_GOTOFF64, 0, 4, 64, FALSE, 0, complain_overflow_bitfield,
131 bfd_elf_generic_reloc, "R_X86_64_GOTOFF64",
132 FALSE, MINUS_ONE, MINUS_ONE, FALSE),
133 HOWTO(R_X86_64_GOTPC32, 0, 2, 32, TRUE, 0, complain_overflow_signed,
134 bfd_elf_generic_reloc, "R_X86_64_GOTPC32",
135 FALSE, 0xffffffff, 0xffffffff, TRUE),
7b81dfbb
AJ
136 HOWTO(R_X86_64_GOT64, 0, 4, 64, FALSE, 0, complain_overflow_signed,
137 bfd_elf_generic_reloc, "R_X86_64_GOT64", FALSE, MINUS_ONE, MINUS_ONE,
138 FALSE),
139 HOWTO(R_X86_64_GOTPCREL64, 0, 4, 64, TRUE, 0, complain_overflow_signed,
140 bfd_elf_generic_reloc, "R_X86_64_GOTPCREL64", FALSE, MINUS_ONE,
141 MINUS_ONE, TRUE),
142 HOWTO(R_X86_64_GOTPC64, 0, 4, 64, TRUE, 0, complain_overflow_signed,
143 bfd_elf_generic_reloc, "R_X86_64_GOTPC64",
144 FALSE, MINUS_ONE, MINUS_ONE, TRUE),
145 HOWTO(R_X86_64_GOTPLT64, 0, 4, 64, FALSE, 0, complain_overflow_signed,
146 bfd_elf_generic_reloc, "R_X86_64_GOTPLT64", FALSE, MINUS_ONE,
147 MINUS_ONE, FALSE),
148 HOWTO(R_X86_64_PLTOFF64, 0, 4, 64, FALSE, 0, complain_overflow_signed,
149 bfd_elf_generic_reloc, "R_X86_64_PLTOFF64", FALSE, MINUS_ONE,
150 MINUS_ONE, FALSE),
67a4f2b7
AO
151 EMPTY_HOWTO (32),
152 EMPTY_HOWTO (33),
153 HOWTO(R_X86_64_GOTPC32_TLSDESC, 0, 2, 32, TRUE, 0,
154 complain_overflow_bitfield, bfd_elf_generic_reloc,
155 "R_X86_64_GOTPC32_TLSDESC",
156 FALSE, 0xffffffff, 0xffffffff, TRUE),
157 HOWTO(R_X86_64_TLSDESC_CALL, 0, 0, 0, FALSE, 0,
158 complain_overflow_dont, bfd_elf_generic_reloc,
159 "R_X86_64_TLSDESC_CALL",
160 FALSE, 0, 0, FALSE),
161 HOWTO(R_X86_64_TLSDESC, 0, 4, 64, FALSE, 0,
162 complain_overflow_bitfield, bfd_elf_generic_reloc,
163 "R_X86_64_TLSDESC",
164 FALSE, MINUS_ONE, MINUS_ONE, FALSE),
cbe950e9
L
165 HOWTO(R_X86_64_IRELATIVE, 0, 4, 64, FALSE, 0, complain_overflow_bitfield,
166 bfd_elf_generic_reloc, "R_X86_64_IRELATIVE", FALSE, MINUS_ONE,
167 MINUS_ONE, FALSE),
64d25c44
L
168 HOWTO(R_X86_64_RELATIVE64, 0, 4, 64, FALSE, 0, complain_overflow_bitfield,
169 bfd_elf_generic_reloc, "R_X86_64_RELATIVE64", FALSE, MINUS_ONE,
170 MINUS_ONE, FALSE),
fe4770f4 171
a33d77bc
JB
172 /* We have a gap in the reloc numbers here.
173 R_X86_64_standard counts the number up to this point, and
174 R_X86_64_vt_offset is the value to subtract from a reloc type of
175 R_X86_64_GNU_VT* to form an index into this table. */
cbe950e9 176#define R_X86_64_standard (R_X86_64_IRELATIVE + 1)
a33d77bc
JB
177#define R_X86_64_vt_offset (R_X86_64_GNU_VTINHERIT - R_X86_64_standard)
178
fe4770f4 179/* GNU extension to record C++ vtable hierarchy. */
b34976b6
AM
180 HOWTO (R_X86_64_GNU_VTINHERIT, 0, 4, 0, FALSE, 0, complain_overflow_dont,
181 NULL, "R_X86_64_GNU_VTINHERIT", FALSE, 0, 0, FALSE),
fe4770f4
AJ
182
183/* GNU extension to record C++ vtable member usage. */
b34976b6
AM
184 HOWTO (R_X86_64_GNU_VTENTRY, 0, 4, 0, FALSE, 0, complain_overflow_dont,
185 _bfd_elf_rel_vtable_reloc_fn, "R_X86_64_GNU_VTENTRY", FALSE, 0, 0,
d7921315
L
186 FALSE),
187
188/* Use complain_overflow_bitfield on R_X86_64_32 for x32. */
189 HOWTO(R_X86_64_32, 0, 2, 32, FALSE, 0, complain_overflow_bitfield,
190 bfd_elf_generic_reloc, "R_X86_64_32", FALSE, 0xffffffff, 0xffffffff,
191 FALSE)
8d88c4ca
NC
192};
193
d8045f23
NC
194#define IS_X86_64_PCREL_TYPE(TYPE) \
195 ( ((TYPE) == R_X86_64_PC8) \
196 || ((TYPE) == R_X86_64_PC16) \
197 || ((TYPE) == R_X86_64_PC32) \
198 || ((TYPE) == R_X86_64_PC64))
199
8d88c4ca 200/* Map BFD relocs to the x86_64 elf relocs. */
70256ad8
AJ
201struct elf_reloc_map
202{
8d88c4ca
NC
203 bfd_reloc_code_real_type bfd_reloc_val;
204 unsigned char elf_reloc_val;
205};
206
dc810e39 207static const struct elf_reloc_map x86_64_reloc_map[] =
8d88c4ca 208{
70256ad8
AJ
209 { BFD_RELOC_NONE, R_X86_64_NONE, },
210 { BFD_RELOC_64, R_X86_64_64, },
211 { BFD_RELOC_32_PCREL, R_X86_64_PC32, },
212 { BFD_RELOC_X86_64_GOT32, R_X86_64_GOT32,},
213 { BFD_RELOC_X86_64_PLT32, R_X86_64_PLT32,},
214 { BFD_RELOC_X86_64_COPY, R_X86_64_COPY, },
215 { BFD_RELOC_X86_64_GLOB_DAT, R_X86_64_GLOB_DAT, },
216 { BFD_RELOC_X86_64_JUMP_SLOT, R_X86_64_JUMP_SLOT, },
217 { BFD_RELOC_X86_64_RELATIVE, R_X86_64_RELATIVE, },
218 { BFD_RELOC_X86_64_GOTPCREL, R_X86_64_GOTPCREL, },
219 { BFD_RELOC_32, R_X86_64_32, },
220 { BFD_RELOC_X86_64_32S, R_X86_64_32S, },
221 { BFD_RELOC_16, R_X86_64_16, },
222 { BFD_RELOC_16_PCREL, R_X86_64_PC16, },
223 { BFD_RELOC_8, R_X86_64_8, },
224 { BFD_RELOC_8_PCREL, R_X86_64_PC8, },
bffbf940
JJ
225 { BFD_RELOC_X86_64_DTPMOD64, R_X86_64_DTPMOD64, },
226 { BFD_RELOC_X86_64_DTPOFF64, R_X86_64_DTPOFF64, },
227 { BFD_RELOC_X86_64_TPOFF64, R_X86_64_TPOFF64, },
228 { BFD_RELOC_X86_64_TLSGD, R_X86_64_TLSGD, },
229 { BFD_RELOC_X86_64_TLSLD, R_X86_64_TLSLD, },
230 { BFD_RELOC_X86_64_DTPOFF32, R_X86_64_DTPOFF32, },
231 { BFD_RELOC_X86_64_GOTTPOFF, R_X86_64_GOTTPOFF, },
232 { BFD_RELOC_X86_64_TPOFF32, R_X86_64_TPOFF32, },
d6ab8113
JB
233 { BFD_RELOC_64_PCREL, R_X86_64_PC64, },
234 { BFD_RELOC_X86_64_GOTOFF64, R_X86_64_GOTOFF64, },
235 { BFD_RELOC_X86_64_GOTPC32, R_X86_64_GOTPC32, },
7b81dfbb
AJ
236 { BFD_RELOC_X86_64_GOT64, R_X86_64_GOT64, },
237 { BFD_RELOC_X86_64_GOTPCREL64,R_X86_64_GOTPCREL64, },
238 { BFD_RELOC_X86_64_GOTPC64, R_X86_64_GOTPC64, },
239 { BFD_RELOC_X86_64_GOTPLT64, R_X86_64_GOTPLT64, },
240 { BFD_RELOC_X86_64_PLTOFF64, R_X86_64_PLTOFF64, },
67a4f2b7
AO
241 { BFD_RELOC_X86_64_GOTPC32_TLSDESC, R_X86_64_GOTPC32_TLSDESC, },
242 { BFD_RELOC_X86_64_TLSDESC_CALL, R_X86_64_TLSDESC_CALL, },
243 { BFD_RELOC_X86_64_TLSDESC, R_X86_64_TLSDESC, },
cbe950e9 244 { BFD_RELOC_X86_64_IRELATIVE, R_X86_64_IRELATIVE, },
fe4770f4
AJ
245 { BFD_RELOC_VTABLE_INHERIT, R_X86_64_GNU_VTINHERIT, },
246 { BFD_RELOC_VTABLE_ENTRY, R_X86_64_GNU_VTENTRY, },
8d88c4ca
NC
247};
248
67a4f2b7 249static reloc_howto_type *
351f65ca 250elf_x86_64_rtype_to_howto (bfd *abfd, unsigned r_type)
67a4f2b7
AO
251{
252 unsigned i;
253
d7921315
L
254 if (r_type == (unsigned int) R_X86_64_32)
255 {
256 if (ABI_64_P (abfd))
257 i = r_type;
258 else
259 i = ARRAY_SIZE (x86_64_elf_howto_table) - 1;
260 }
261 else if (r_type < (unsigned int) R_X86_64_GNU_VTINHERIT
262 || r_type >= (unsigned int) R_X86_64_max)
67a4f2b7
AO
263 {
264 if (r_type >= (unsigned int) R_X86_64_standard)
265 {
266 (*_bfd_error_handler) (_("%B: invalid relocation type %d"),
267 abfd, (int) r_type);
268 r_type = R_X86_64_NONE;
269 }
270 i = r_type;
271 }
272 else
273 i = r_type - (unsigned int) R_X86_64_vt_offset;
274 BFD_ASSERT (x86_64_elf_howto_table[i].type == r_type);
275 return &x86_64_elf_howto_table[i];
276}
8d88c4ca
NC
277
278/* Given a BFD reloc type, return a HOWTO structure. */
279static reloc_howto_type *
351f65ca
L
280elf_x86_64_reloc_type_lookup (bfd *abfd,
281 bfd_reloc_code_real_type code)
8d88c4ca
NC
282{
283 unsigned int i;
27482721 284
8d88c4ca
NC
285 for (i = 0; i < sizeof (x86_64_reloc_map) / sizeof (struct elf_reloc_map);
286 i++)
287 {
288 if (x86_64_reloc_map[i].bfd_reloc_val == code)
351f65ca
L
289 return elf_x86_64_rtype_to_howto (abfd,
290 x86_64_reloc_map[i].elf_reloc_val);
8d88c4ca
NC
291 }
292 return 0;
293}
294
157090f7 295static reloc_howto_type *
d7921315 296elf_x86_64_reloc_name_lookup (bfd *abfd,
351f65ca 297 const char *r_name)
157090f7
AM
298{
299 unsigned int i;
300
d7921315
L
301 if (!ABI_64_P (abfd) && strcasecmp (r_name, "R_X86_64_32") == 0)
302 {
303 /* Get x32 R_X86_64_32. */
304 reloc_howto_type *reloc
305 = &x86_64_elf_howto_table[ARRAY_SIZE (x86_64_elf_howto_table) - 1];
306 BFD_ASSERT (reloc->type == (unsigned int) R_X86_64_32);
307 return reloc;
308 }
309
310 for (i = 0; i < ARRAY_SIZE (x86_64_elf_howto_table); i++)
157090f7
AM
311 if (x86_64_elf_howto_table[i].name != NULL
312 && strcasecmp (x86_64_elf_howto_table[i].name, r_name) == 0)
313 return &x86_64_elf_howto_table[i];
314
315 return NULL;
316}
317
8d88c4ca 318/* Given an x86_64 ELF reloc type, fill in an arelent structure. */
8da6118f 319
8d88c4ca 320static void
351f65ca
L
321elf_x86_64_info_to_howto (bfd *abfd ATTRIBUTE_UNUSED, arelent *cache_ptr,
322 Elf_Internal_Rela *dst)
8d88c4ca 323{
67a4f2b7 324 unsigned r_type;
8d88c4ca 325
351f65ca
L
326 r_type = ELF32_R_TYPE (dst->r_info);
327 cache_ptr->howto = elf_x86_64_rtype_to_howto (abfd, r_type);
8d88c4ca
NC
328 BFD_ASSERT (r_type == cache_ptr->howto->type);
329}
70256ad8 330\f
3bab7989 331/* Support for core dump NOTE sections. */
b34976b6 332static bfd_boolean
351f65ca 333elf_x86_64_grok_prstatus (bfd *abfd, Elf_Internal_Note *note)
3bab7989
ML
334{
335 int offset;
eea6121a 336 size_t size;
3bab7989
ML
337
338 switch (note->descsz)
339 {
340 default:
b34976b6 341 return FALSE;
3bab7989 342
bcd823f1
L
343 case 296: /* sizeof(istruct elf_prstatus) on Linux/x32 */
344 /* pr_cursig */
345 elf_tdata (abfd)->core_signal = bfd_get_16 (abfd, note->descdata + 12);
346
347 /* pr_pid */
348 elf_tdata (abfd)->core_lwpid = bfd_get_32 (abfd, note->descdata + 24);
349
350 /* pr_reg */
351 offset = 72;
352 size = 216;
353
354 break;
355
3bab7989
ML
356 case 336: /* sizeof(istruct elf_prstatus) on Linux/x86_64 */
357 /* pr_cursig */
cedb70c5 358 elf_tdata (abfd)->core_signal
3bab7989
ML
359 = bfd_get_16 (abfd, note->descdata + 12);
360
361 /* pr_pid */
261b8d08 362 elf_tdata (abfd)->core_lwpid
3bab7989
ML
363 = bfd_get_32 (abfd, note->descdata + 32);
364
365 /* pr_reg */
366 offset = 112;
eea6121a 367 size = 216;
3bab7989
ML
368
369 break;
370 }
371
372 /* Make a ".reg/999" section. */
373 return _bfd_elfcore_make_pseudosection (abfd, ".reg",
eea6121a 374 size, note->descpos + offset);
3bab7989
ML
375}
376
b34976b6 377static bfd_boolean
351f65ca 378elf_x86_64_grok_psinfo (bfd *abfd, Elf_Internal_Note *note)
3bab7989
ML
379{
380 switch (note->descsz)
381 {
382 default:
b34976b6 383 return FALSE;
3bab7989 384
bcd823f1
L
385 case 124: /* sizeof(struct elf_prpsinfo) on Linux/x32 */
386 elf_tdata (abfd)->core_pid
387 = bfd_get_32 (abfd, note->descdata + 12);
388 elf_tdata (abfd)->core_program
389 = _bfd_elfcore_strndup (abfd, note->descdata + 28, 16);
390 elf_tdata (abfd)->core_command
391 = _bfd_elfcore_strndup (abfd, note->descdata + 44, 80);
392 break;
393
3bab7989 394 case 136: /* sizeof(struct elf_prpsinfo) on Linux/x86_64 */
261b8d08
PA
395 elf_tdata (abfd)->core_pid
396 = bfd_get_32 (abfd, note->descdata + 24);
3bab7989
ML
397 elf_tdata (abfd)->core_program
398 = _bfd_elfcore_strndup (abfd, note->descdata + 40, 16);
399 elf_tdata (abfd)->core_command
400 = _bfd_elfcore_strndup (abfd, note->descdata + 56, 80);
401 }
402
403 /* Note that for some reason, a spurious space is tacked
404 onto the end of the args in some (at least one anyway)
405 implementations, so strip it off if it exists. */
406
407 {
408 char *command = elf_tdata (abfd)->core_command;
409 int n = strlen (command);
410
411 if (0 < n && command[n - 1] == ' ')
412 command[n - 1] = '\0';
413 }
414
b34976b6 415 return TRUE;
3bab7989 416}
8fd79e71
L
417
418#ifdef CORE_HEADER
419static char *
420elf_x86_64_write_core_note (bfd *abfd, char *buf, int *bufsiz,
421 int note_type, ...)
422{
423 const struct elf_backend_data *bed = get_elf_backend_data (abfd);
8fd79e71
L
424 va_list ap;
425 const char *fname, *psargs;
426 long pid;
427 int cursig;
428 const void *gregs;
429
430 switch (note_type)
431 {
432 default:
433 return NULL;
434
435 case NT_PRPSINFO:
436 va_start (ap, note_type);
437 fname = va_arg (ap, const char *);
438 psargs = va_arg (ap, const char *);
439 va_end (ap);
440
441 if (bed->s->elfclass == ELFCLASS32)
442 {
443 prpsinfo32_t data;
444 memset (&data, 0, sizeof (data));
445 strncpy (data.pr_fname, fname, sizeof (data.pr_fname));
446 strncpy (data.pr_psargs, psargs, sizeof (data.pr_psargs));
e85c6a70
JK
447 return elfcore_write_note (abfd, buf, bufsiz, "CORE", note_type,
448 &data, sizeof (data));
8fd79e71
L
449 }
450 else
451 {
452 prpsinfo_t data;
453 memset (&data, 0, sizeof (data));
454 strncpy (data.pr_fname, fname, sizeof (data.pr_fname));
455 strncpy (data.pr_psargs, psargs, sizeof (data.pr_psargs));
e85c6a70
JK
456 return elfcore_write_note (abfd, buf, bufsiz, "CORE", note_type,
457 &data, sizeof (data));
8fd79e71 458 }
e85c6a70 459 /* NOTREACHED */
8fd79e71
L
460
461 case NT_PRSTATUS:
462 va_start (ap, note_type);
463 pid = va_arg (ap, long);
464 cursig = va_arg (ap, int);
465 gregs = va_arg (ap, const void *);
466 va_end (ap);
467
468 if (bed->s->elfclass == ELFCLASS32)
469 {
470 if (bed->elf_machine_code == EM_X86_64)
471 {
472 prstatusx32_t prstat;
473 memset (&prstat, 0, sizeof (prstat));
474 prstat.pr_pid = pid;
475 prstat.pr_cursig = cursig;
476 memcpy (&prstat.pr_reg, gregs, sizeof (prstat.pr_reg));
e85c6a70
JK
477 return elfcore_write_note (abfd, buf, bufsiz, "CORE", note_type,
478 &prstat, sizeof (prstat));
8fd79e71
L
479 }
480 else
481 {
482 prstatus32_t prstat;
483 memset (&prstat, 0, sizeof (prstat));
484 prstat.pr_pid = pid;
485 prstat.pr_cursig = cursig;
486 memcpy (&prstat.pr_reg, gregs, sizeof (prstat.pr_reg));
e85c6a70
JK
487 return elfcore_write_note (abfd, buf, bufsiz, "CORE", note_type,
488 &prstat, sizeof (prstat));
8fd79e71
L
489 }
490 }
491 else
492 {
493 prstatus_t prstat;
494 memset (&prstat, 0, sizeof (prstat));
495 prstat.pr_pid = pid;
496 prstat.pr_cursig = cursig;
497 memcpy (&prstat.pr_reg, gregs, sizeof (prstat.pr_reg));
e85c6a70
JK
498 return elfcore_write_note (abfd, buf, bufsiz, "CORE", note_type,
499 &prstat, sizeof (prstat));
8fd79e71 500 }
8fd79e71 501 }
e85c6a70 502 /* NOTREACHED */
8fd79e71
L
503}
504#endif
3bab7989 505\f
407443a3 506/* Functions for the x86-64 ELF linker. */
70256ad8 507
407443a3 508/* The name of the dynamic interpreter. This is put in the .interp
70256ad8
AJ
509 section. */
510
351f65ca 511#define ELF64_DYNAMIC_INTERPRETER "/lib/ld64.so.1"
eec9dd95 512#define ELF32_DYNAMIC_INTERPRETER "/lib/ldx32.so.1"
70256ad8 513
d40d037c
AJ
514/* If ELIMINATE_COPY_RELOCS is non-zero, the linker will try to avoid
515 copying dynamic variables from a shared lib into an app's dynbss
516 section, and instead use a dynamic relocation to point into the
517 shared lib. */
518#define ELIMINATE_COPY_RELOCS 1
519
70256ad8
AJ
520/* The size in bytes of an entry in the global offset table. */
521
522#define GOT_ENTRY_SIZE 8
8d88c4ca 523
70256ad8 524/* The size in bytes of an entry in the procedure linkage table. */
8d88c4ca 525
70256ad8
AJ
526#define PLT_ENTRY_SIZE 16
527
528/* The first entry in a procedure linkage table looks like this. See the
529 SVR4 ABI i386 supplement and the x86-64 ABI to see how this works. */
530
351f65ca 531static const bfd_byte elf_x86_64_plt0_entry[PLT_ENTRY_SIZE] =
70256ad8 532{
653165cc
AJ
533 0xff, 0x35, 8, 0, 0, 0, /* pushq GOT+8(%rip) */
534 0xff, 0x25, 16, 0, 0, 0, /* jmpq *GOT+16(%rip) */
10efb593 535 0x0f, 0x1f, 0x40, 0x00 /* nopl 0(%rax) */
70256ad8
AJ
536};
537
538/* Subsequent entries in a procedure linkage table look like this. */
539
351f65ca 540static const bfd_byte elf_x86_64_plt_entry[PLT_ENTRY_SIZE] =
70256ad8 541{
653165cc 542 0xff, 0x25, /* jmpq *name@GOTPC(%rip) */
407443a3 543 0, 0, 0, 0, /* replaced with offset to this symbol in .got. */
653165cc 544 0x68, /* pushq immediate */
70256ad8
AJ
545 0, 0, 0, 0, /* replaced with index into relocation table. */
546 0xe9, /* jmp relative */
547 0, 0, 0, 0 /* replaced with offset to start of .plt0. */
548};
549
e41b3a13
JJ
550/* .eh_frame covering the .plt section. */
551
552static const bfd_byte elf_x86_64_eh_frame_plt[] =
553{
554#define PLT_CIE_LENGTH 20
555#define PLT_FDE_LENGTH 36
556#define PLT_FDE_START_OFFSET 4 + PLT_CIE_LENGTH + 8
557#define PLT_FDE_LEN_OFFSET 4 + PLT_CIE_LENGTH + 12
558 PLT_CIE_LENGTH, 0, 0, 0, /* CIE length */
559 0, 0, 0, 0, /* CIE ID */
560 1, /* CIE version */
561 'z', 'R', 0, /* Augmentation string */
562 1, /* Code alignment factor */
563 0x78, /* Data alignment factor */
564 16, /* Return address column */
565 1, /* Augmentation size */
566 DW_EH_PE_pcrel | DW_EH_PE_sdata4, /* FDE encoding */
567 DW_CFA_def_cfa, 7, 8, /* DW_CFA_def_cfa: r7 (rsp) ofs 8 */
568 DW_CFA_offset + 16, 1, /* DW_CFA_offset: r16 (rip) at cfa-8 */
569 DW_CFA_nop, DW_CFA_nop,
570
571 PLT_FDE_LENGTH, 0, 0, 0, /* FDE length */
572 PLT_CIE_LENGTH + 8, 0, 0, 0, /* CIE pointer */
573 0, 0, 0, 0, /* R_X86_64_PC32 .plt goes here */
574 0, 0, 0, 0, /* .plt size goes here */
575 0, /* Augmentation size */
576 DW_CFA_def_cfa_offset, 16, /* DW_CFA_def_cfa_offset: 16 */
577 DW_CFA_advance_loc + 6, /* DW_CFA_advance_loc: 6 to __PLT__+6 */
578 DW_CFA_def_cfa_offset, 24, /* DW_CFA_def_cfa_offset: 24 */
579 DW_CFA_advance_loc + 10, /* DW_CFA_advance_loc: 10 to __PLT__+16 */
580 DW_CFA_def_cfa_expression, /* DW_CFA_def_cfa_expression */
581 11, /* Block length */
582 DW_OP_breg7, 8, /* DW_OP_breg7 (rsp): 8 */
583 DW_OP_breg16, 0, /* DW_OP_breg16 (rip): 0 */
584 DW_OP_lit15, DW_OP_and, DW_OP_lit11, DW_OP_ge,
585 DW_OP_lit3, DW_OP_shl, DW_OP_plus,
586 DW_CFA_nop, DW_CFA_nop, DW_CFA_nop, DW_CFA_nop
587};
588
eed180f8
RM
589/* Architecture-specific backend data for x86-64. */
590
591struct elf_x86_64_backend_data
592{
593 /* Templates for the initial PLT entry and for subsequent entries. */
594 const bfd_byte *plt0_entry;
595 const bfd_byte *plt_entry;
596 unsigned int plt_entry_size; /* Size of each PLT entry. */
597
598 /* Offsets into plt0_entry that are to be replaced with GOT[1] and GOT[2]. */
599 unsigned int plt0_got1_offset;
600 unsigned int plt0_got2_offset;
601
602 /* Offset of the end of the PC-relative instruction containing
603 plt0_got2_offset. */
604 unsigned int plt0_got2_insn_end;
605
606 /* Offsets into plt_entry that are to be replaced with... */
607 unsigned int plt_got_offset; /* ... address of this symbol in .got. */
608 unsigned int plt_reloc_offset; /* ... offset into relocation table. */
609 unsigned int plt_plt_offset; /* ... offset to start of .plt. */
610
611 /* Length of the PC-relative instruction containing plt_got_offset. */
612 unsigned int plt_got_insn_size;
613
614 /* Offset of the end of the PC-relative jump to plt0_entry. */
615 unsigned int plt_plt_insn_end;
616
617 /* Offset into plt_entry where the initial value of the GOT entry points. */
618 unsigned int plt_lazy_offset;
619
620 /* .eh_frame covering the .plt section. */
621 const bfd_byte *eh_frame_plt;
622 unsigned int eh_frame_plt_size;
623};
624
625#define get_elf_x86_64_backend_data(abfd) \
626 ((const struct elf_x86_64_backend_data *) \
627 get_elf_backend_data (abfd)->arch_data)
628
629#define GET_PLT_ENTRY_SIZE(abfd) \
630 get_elf_x86_64_backend_data (abfd)->plt_entry_size
631
632/* These are the standard parameters. */
633static const struct elf_x86_64_backend_data elf_x86_64_arch_bed =
634 {
635 elf_x86_64_plt0_entry, /* plt0_entry */
636 elf_x86_64_plt_entry, /* plt_entry */
637 sizeof (elf_x86_64_plt_entry), /* plt_entry_size */
638 2, /* plt0_got1_offset */
639 8, /* plt0_got2_offset */
640 12, /* plt0_got2_insn_end */
641 2, /* plt_got_offset */
642 7, /* plt_reloc_offset */
643 12, /* plt_plt_offset */
644 6, /* plt_got_insn_size */
645 PLT_ENTRY_SIZE, /* plt_plt_insn_end */
646 6, /* plt_lazy_offset */
647 elf_x86_64_eh_frame_plt, /* eh_frame_plt */
648 sizeof (elf_x86_64_eh_frame_plt), /* eh_frame_plt_size */
649 };
650
651#define elf_backend_arch_data &elf_x86_64_arch_bed
652
70256ad8
AJ
653/* x86-64 ELF linker hash entry. */
654
351f65ca 655struct elf_x86_64_link_hash_entry
70256ad8 656{
c434dee6 657 struct elf_link_hash_entry elf;
70256ad8 658
c434dee6 659 /* Track dynamic relocs copied for this symbol. */
e03a8ed8 660 struct elf_dyn_relocs *dyn_relocs;
bffbf940
JJ
661
662#define GOT_UNKNOWN 0
663#define GOT_NORMAL 1
664#define GOT_TLS_GD 2
665#define GOT_TLS_IE 3
67a4f2b7
AO
666#define GOT_TLS_GDESC 4
667#define GOT_TLS_GD_BOTH_P(type) \
668 ((type) == (GOT_TLS_GD | GOT_TLS_GDESC))
669#define GOT_TLS_GD_P(type) \
670 ((type) == GOT_TLS_GD || GOT_TLS_GD_BOTH_P (type))
671#define GOT_TLS_GDESC_P(type) \
672 ((type) == GOT_TLS_GDESC || GOT_TLS_GD_BOTH_P (type))
673#define GOT_TLS_GD_ANY_P(type) \
674 (GOT_TLS_GD_P (type) || GOT_TLS_GDESC_P (type))
bffbf940 675 unsigned char tls_type;
67a4f2b7
AO
676
677 /* Offset of the GOTPLT entry reserved for the TLS descriptor,
678 starting at the end of the jump table. */
679 bfd_vma tlsdesc_got;
bffbf940
JJ
680};
681
351f65ca
L
682#define elf_x86_64_hash_entry(ent) \
683 ((struct elf_x86_64_link_hash_entry *)(ent))
bffbf940 684
351f65ca 685struct elf_x86_64_obj_tdata
bffbf940
JJ
686{
687 struct elf_obj_tdata root;
688
689 /* tls_type for each local got entry. */
690 char *local_got_tls_type;
67a4f2b7
AO
691
692 /* GOTPLT entries for TLS descriptors. */
693 bfd_vma *local_tlsdesc_gotent;
70256ad8
AJ
694};
695
351f65ca
L
696#define elf_x86_64_tdata(abfd) \
697 ((struct elf_x86_64_obj_tdata *) (abfd)->tdata.any)
bffbf940 698
351f65ca
L
699#define elf_x86_64_local_got_tls_type(abfd) \
700 (elf_x86_64_tdata (abfd)->local_got_tls_type)
bffbf940 701
351f65ca
L
702#define elf_x86_64_local_tlsdesc_gotent(abfd) \
703 (elf_x86_64_tdata (abfd)->local_tlsdesc_gotent)
bffbf940 704
0ffa91dd
NC
705#define is_x86_64_elf(bfd) \
706 (bfd_get_flavour (bfd) == bfd_target_elf_flavour \
707 && elf_tdata (bfd) != NULL \
4dfe6ac6 708 && elf_object_id (bfd) == X86_64_ELF_DATA)
0ffa91dd
NC
709
710static bfd_boolean
351f65ca 711elf_x86_64_mkobject (bfd *abfd)
0ffa91dd 712{
351f65ca 713 return bfd_elf_allocate_object (abfd, sizeof (struct elf_x86_64_obj_tdata),
4dfe6ac6 714 X86_64_ELF_DATA);
0ffa91dd
NC
715}
716
c434dee6 717/* x86-64 ELF linker hash table. */
8d88c4ca 718
351f65ca 719struct elf_x86_64_link_hash_table
407443a3 720{
c434dee6 721 struct elf_link_hash_table elf;
70256ad8 722
c434dee6 723 /* Short-cuts to get to dynamic linker sections. */
c434dee6
AJ
724 asection *sdynbss;
725 asection *srelbss;
e41b3a13 726 asection *plt_eh_frame;
70256ad8 727
4dfe6ac6
NC
728 union
729 {
bffbf940
JJ
730 bfd_signed_vma refcount;
731 bfd_vma offset;
732 } tls_ld_got;
733
67a4f2b7
AO
734 /* The amount of space used by the jump slots in the GOT. */
735 bfd_vma sgotplt_jump_table_size;
736
87d72d41
AM
737 /* Small local sym cache. */
738 struct sym_cache sym_cache;
9f03412a 739
351f65ca
L
740 bfd_vma (*r_info) (bfd_vma, bfd_vma);
741 bfd_vma (*r_sym) (bfd_vma);
248775ba 742 unsigned int pointer_r_type;
351f65ca
L
743 const char *dynamic_interpreter;
744 int dynamic_interpreter_size;
745
9f03412a
AO
746 /* _TLS_MODULE_BASE_ symbol. */
747 struct bfd_link_hash_entry *tls_module_base;
c25bc9fc
L
748
749 /* Used by local STT_GNU_IFUNC symbols. */
750 htab_t loc_hash_table;
4dfe6ac6
NC
751 void * loc_hash_memory;
752
753 /* The offset into splt of the PLT entry for the TLS descriptor
754 resolver. Special values are 0, if not necessary (or not found
755 to be necessary yet), and -1 if needed but not determined
756 yet. */
757 bfd_vma tlsdesc_plt;
758 /* The offset into sgot of the GOT entry used by the PLT entry
759 above. */
760 bfd_vma tlsdesc_got;
e1f98742
L
761
762 /* The index of the next R_X86_64_JUMP_SLOT entry in .rela.plt. */
763 bfd_vma next_jump_slot_index;
764 /* The index of the next R_X86_64_IRELATIVE entry in .rela.plt. */
765 bfd_vma next_irelative_index;
c434dee6 766};
70256ad8
AJ
767
768/* Get the x86-64 ELF linker hash table from a link_info structure. */
8d88c4ca 769
351f65ca 770#define elf_x86_64_hash_table(p) \
4dfe6ac6 771 (elf_hash_table_id ((struct elf_link_hash_table *) ((p)->hash)) \
351f65ca 772 == X86_64_ELF_DATA ? ((struct elf_x86_64_link_hash_table *) ((p)->hash)) : NULL)
8d88c4ca 773
351f65ca 774#define elf_x86_64_compute_jump_table_size(htab) \
6de2ae4a 775 ((htab)->elf.srelplt->reloc_count * GOT_ENTRY_SIZE)
67a4f2b7 776
407443a3 777/* Create an entry in an x86-64 ELF linker hash table. */
70256ad8
AJ
778
779static struct bfd_hash_entry *
351f65ca
L
780elf_x86_64_link_hash_newfunc (struct bfd_hash_entry *entry,
781 struct bfd_hash_table *table,
782 const char *string)
70256ad8 783{
70256ad8 784 /* Allocate the structure if it has not already been allocated by a
c434dee6
AJ
785 subclass. */
786 if (entry == NULL)
787 {
a50b1753 788 entry = (struct bfd_hash_entry *)
eed180f8
RM
789 bfd_hash_allocate (table,
790 sizeof (struct elf_x86_64_link_hash_entry));
c434dee6
AJ
791 if (entry == NULL)
792 return entry;
793 }
70256ad8
AJ
794
795 /* Call the allocation method of the superclass. */
c434dee6
AJ
796 entry = _bfd_elf_link_hash_newfunc (entry, table, string);
797 if (entry != NULL)
70256ad8 798 {
351f65ca 799 struct elf_x86_64_link_hash_entry *eh;
c434dee6 800
351f65ca 801 eh = (struct elf_x86_64_link_hash_entry *) entry;
c434dee6 802 eh->dyn_relocs = NULL;
bffbf940 803 eh->tls_type = GOT_UNKNOWN;
67a4f2b7 804 eh->tlsdesc_got = (bfd_vma) -1;
70256ad8
AJ
805 }
806
c434dee6 807 return entry;
70256ad8
AJ
808}
809
c25bc9fc
L
810/* Compute a hash of a local hash entry. We use elf_link_hash_entry
811 for local symbol so that we can handle local STT_GNU_IFUNC symbols
812 as global symbol. We reuse indx and dynstr_index for local symbol
813 hash since they aren't used by global symbols in this backend. */
814
815static hashval_t
351f65ca 816elf_x86_64_local_htab_hash (const void *ptr)
c25bc9fc
L
817{
818 struct elf_link_hash_entry *h
819 = (struct elf_link_hash_entry *) ptr;
d2149d72 820 return ELF_LOCAL_SYMBOL_HASH (h->indx, h->dynstr_index);
c25bc9fc
L
821}
822
823/* Compare local hash entries. */
824
825static int
351f65ca 826elf_x86_64_local_htab_eq (const void *ptr1, const void *ptr2)
c25bc9fc
L
827{
828 struct elf_link_hash_entry *h1
829 = (struct elf_link_hash_entry *) ptr1;
830 struct elf_link_hash_entry *h2
831 = (struct elf_link_hash_entry *) ptr2;
832
833 return h1->indx == h2->indx && h1->dynstr_index == h2->dynstr_index;
834}
835
836/* Find and/or create a hash entry for local symbol. */
837
838static struct elf_link_hash_entry *
351f65ca
L
839elf_x86_64_get_local_sym_hash (struct elf_x86_64_link_hash_table *htab,
840 bfd *abfd, const Elf_Internal_Rela *rel,
841 bfd_boolean create)
c25bc9fc 842{
351f65ca 843 struct elf_x86_64_link_hash_entry e, *ret;
c25bc9fc 844 asection *sec = abfd->sections;
d2149d72 845 hashval_t h = ELF_LOCAL_SYMBOL_HASH (sec->id,
351f65ca 846 htab->r_sym (rel->r_info));
c25bc9fc
L
847 void **slot;
848
849 e.elf.indx = sec->id;
351f65ca 850 e.elf.dynstr_index = htab->r_sym (rel->r_info);
c25bc9fc
L
851 slot = htab_find_slot_with_hash (htab->loc_hash_table, &e, h,
852 create ? INSERT : NO_INSERT);
853
854 if (!slot)
855 return NULL;
856
857 if (*slot)
858 {
351f65ca 859 ret = (struct elf_x86_64_link_hash_entry *) *slot;
c25bc9fc
L
860 return &ret->elf;
861 }
862
351f65ca 863 ret = (struct elf_x86_64_link_hash_entry *)
c25bc9fc 864 objalloc_alloc ((struct objalloc *) htab->loc_hash_memory,
351f65ca 865 sizeof (struct elf_x86_64_link_hash_entry));
c25bc9fc
L
866 if (ret)
867 {
868 memset (ret, 0, sizeof (*ret));
869 ret->elf.indx = sec->id;
351f65ca 870 ret->elf.dynstr_index = htab->r_sym (rel->r_info);
c25bc9fc 871 ret->elf.dynindx = -1;
c25bc9fc
L
872 *slot = ret;
873 }
874 return &ret->elf;
875}
876
8d88c4ca
NC
877/* Create an X86-64 ELF linker hash table. */
878
879static struct bfd_link_hash_table *
351f65ca 880elf_x86_64_link_hash_table_create (bfd *abfd)
8d88c4ca 881{
351f65ca
L
882 struct elf_x86_64_link_hash_table *ret;
883 bfd_size_type amt = sizeof (struct elf_x86_64_link_hash_table);
8d88c4ca 884
351f65ca 885 ret = (struct elf_x86_64_link_hash_table *) bfd_malloc (amt);
c434dee6 886 if (ret == NULL)
8d88c4ca
NC
887 return NULL;
888
eb4ff4d6 889 if (!_bfd_elf_link_hash_table_init (&ret->elf, abfd,
351f65ca
L
890 elf_x86_64_link_hash_newfunc,
891 sizeof (struct elf_x86_64_link_hash_entry),
4dfe6ac6 892 X86_64_ELF_DATA))
8d88c4ca 893 {
e2d34d7d 894 free (ret);
8d88c4ca
NC
895 return NULL;
896 }
897
c434dee6
AJ
898 ret->sdynbss = NULL;
899 ret->srelbss = NULL;
332ce62b 900 ret->plt_eh_frame = NULL;
87d72d41 901 ret->sym_cache.abfd = NULL;
67a4f2b7
AO
902 ret->tlsdesc_plt = 0;
903 ret->tlsdesc_got = 0;
bffbf940 904 ret->tls_ld_got.refcount = 0;
67a4f2b7 905 ret->sgotplt_jump_table_size = 0;
9f03412a 906 ret->tls_module_base = NULL;
eed180f8 907 ret->next_jump_slot_index = 0;
e1f98742 908 ret->next_irelative_index = 0;
6bbec505 909
351f65ca
L
910 if (ABI_64_P (abfd))
911 {
912 ret->r_info = elf64_r_info;
913 ret->r_sym = elf64_r_sym;
248775ba 914 ret->pointer_r_type = R_X86_64_64;
351f65ca
L
915 ret->dynamic_interpreter = ELF64_DYNAMIC_INTERPRETER;
916 ret->dynamic_interpreter_size = sizeof ELF64_DYNAMIC_INTERPRETER;
917 }
918 else
919 {
920 ret->r_info = elf32_r_info;
921 ret->r_sym = elf32_r_sym;
248775ba 922 ret->pointer_r_type = R_X86_64_32;
351f65ca
L
923 ret->dynamic_interpreter = ELF32_DYNAMIC_INTERPRETER;
924 ret->dynamic_interpreter_size = sizeof ELF32_DYNAMIC_INTERPRETER;
925 }
926
c25bc9fc 927 ret->loc_hash_table = htab_try_create (1024,
351f65ca
L
928 elf_x86_64_local_htab_hash,
929 elf_x86_64_local_htab_eq,
c25bc9fc
L
930 NULL);
931 ret->loc_hash_memory = objalloc_create ();
932 if (!ret->loc_hash_table || !ret->loc_hash_memory)
933 {
934 free (ret);
935 return NULL;
936 }
937
c434dee6
AJ
938 return &ret->elf.root;
939}
940
c25bc9fc
L
941/* Destroy an X86-64 ELF linker hash table. */
942
943static void
351f65ca 944elf_x86_64_link_hash_table_free (struct bfd_link_hash_table *hash)
c25bc9fc 945{
351f65ca
L
946 struct elf_x86_64_link_hash_table *htab
947 = (struct elf_x86_64_link_hash_table *) hash;
c25bc9fc
L
948
949 if (htab->loc_hash_table)
950 htab_delete (htab->loc_hash_table);
951 if (htab->loc_hash_memory)
952 objalloc_free ((struct objalloc *) htab->loc_hash_memory);
953 _bfd_generic_link_hash_table_free (hash);
954}
955
c434dee6
AJ
956/* Create .plt, .rela.plt, .got, .got.plt, .rela.got, .dynbss, and
957 .rela.bss sections in DYNOBJ, and set up shortcuts to them in our
958 hash table. */
959
b34976b6 960static bfd_boolean
351f65ca
L
961elf_x86_64_create_dynamic_sections (bfd *dynobj,
962 struct bfd_link_info *info)
c434dee6 963{
351f65ca 964 struct elf_x86_64_link_hash_table *htab;
c434dee6 965
c434dee6 966 if (!_bfd_elf_create_dynamic_sections (dynobj, info))
b34976b6 967 return FALSE;
c434dee6 968
351f65ca 969 htab = elf_x86_64_hash_table (info);
4dfe6ac6
NC
970 if (htab == NULL)
971 return FALSE;
972
3d4d4302 973 htab->sdynbss = bfd_get_linker_section (dynobj, ".dynbss");
c434dee6 974 if (!info->shared)
3d4d4302 975 htab->srelbss = bfd_get_linker_section (dynobj, ".rela.bss");
c434dee6 976
6de2ae4a 977 if (!htab->sdynbss
c434dee6
AJ
978 || (!info->shared && !htab->srelbss))
979 abort ();
980
e41b3a13 981 if (!info->no_ld_generated_unwind_info
2fe0fd06 982 && htab->plt_eh_frame == NULL
e4de50d4 983 && htab->elf.splt != NULL)
e41b3a13 984 {
bbf96e4e
L
985 flagword flags = (SEC_ALLOC | SEC_LOAD | SEC_READONLY
986 | SEC_HAS_CONTENTS | SEC_IN_MEMORY
987 | SEC_LINKER_CREATED);
e41b3a13 988 htab->plt_eh_frame
bbf96e4e 989 = bfd_make_section_anyway_with_flags (dynobj, ".eh_frame", flags);
e41b3a13
JJ
990 if (htab->plt_eh_frame == NULL
991 || !bfd_set_section_alignment (dynobj, htab->plt_eh_frame, 3))
992 return FALSE;
e41b3a13 993 }
b34976b6 994 return TRUE;
c434dee6
AJ
995}
996
997/* Copy the extra info we tack onto an elf_link_hash_entry. */
998
999static void
351f65ca
L
1000elf_x86_64_copy_indirect_symbol (struct bfd_link_info *info,
1001 struct elf_link_hash_entry *dir,
1002 struct elf_link_hash_entry *ind)
c434dee6 1003{
351f65ca 1004 struct elf_x86_64_link_hash_entry *edir, *eind;
c434dee6 1005
351f65ca
L
1006 edir = (struct elf_x86_64_link_hash_entry *) dir;
1007 eind = (struct elf_x86_64_link_hash_entry *) ind;
c434dee6
AJ
1008
1009 if (eind->dyn_relocs != NULL)
1010 {
1011 if (edir->dyn_relocs != NULL)
1012 {
e03a8ed8
L
1013 struct elf_dyn_relocs **pp;
1014 struct elf_dyn_relocs *p;
c434dee6 1015
fcfa13d2 1016 /* Add reloc counts against the indirect sym to the direct sym
c434dee6
AJ
1017 list. Merge any entries against the same section. */
1018 for (pp = &eind->dyn_relocs; (p = *pp) != NULL; )
1019 {
e03a8ed8 1020 struct elf_dyn_relocs *q;
c434dee6
AJ
1021
1022 for (q = edir->dyn_relocs; q != NULL; q = q->next)
1023 if (q->sec == p->sec)
1024 {
1025 q->pc_count += p->pc_count;
1026 q->count += p->count;
1027 *pp = p->next;
1028 break;
1029 }
1030 if (q == NULL)
1031 pp = &p->next;
1032 }
1033 *pp = edir->dyn_relocs;
1034 }
1035
1036 edir->dyn_relocs = eind->dyn_relocs;
1037 eind->dyn_relocs = NULL;
1038 }
1039
bffbf940
JJ
1040 if (ind->root.type == bfd_link_hash_indirect
1041 && dir->got.refcount <= 0)
1042 {
1043 edir->tls_type = eind->tls_type;
1044 eind->tls_type = GOT_UNKNOWN;
1045 }
1046
d40d037c
AJ
1047 if (ELIMINATE_COPY_RELOCS
1048 && ind->root.type != bfd_link_hash_indirect
f5385ebf
AM
1049 && dir->dynamic_adjusted)
1050 {
1051 /* If called to transfer flags for a weakdef during processing
1052 of elf_adjust_dynamic_symbol, don't copy non_got_ref.
1053 We clear it ourselves for ELIMINATE_COPY_RELOCS. */
1054 dir->ref_dynamic |= ind->ref_dynamic;
1055 dir->ref_regular |= ind->ref_regular;
1056 dir->ref_regular_nonweak |= ind->ref_regular_nonweak;
1057 dir->needs_plt |= ind->needs_plt;
1058 dir->pointer_equality_needed |= ind->pointer_equality_needed;
1059 }
d40d037c 1060 else
fcfa13d2 1061 _bfd_elf_link_hash_copy_indirect (info, dir, ind);
8d88c4ca
NC
1062}
1063
b34976b6 1064static bfd_boolean
27482721 1065elf64_x86_64_elf_object_p (bfd *abfd)
bffbf940 1066{
8d88c4ca
NC
1067 /* Set the right machine number for an x86-64 elf64 file. */
1068 bfd_default_set_arch_mach (abfd, bfd_arch_i386, bfd_mach_x86_64);
b34976b6 1069 return TRUE;
8d88c4ca
NC
1070}
1071
8059fb19
RM
1072static bfd_boolean
1073elf32_x86_64_elf_object_p (bfd *abfd)
1074{
1075 /* Set the right machine number for an x86-64 elf32 file. */
1076 bfd_default_set_arch_mach (abfd, bfd_arch_i386, bfd_mach_x64_32);
1077 return TRUE;
1078}
1079
142411ca
L
1080/* Return TRUE if the TLS access code sequence support transition
1081 from R_TYPE. */
1082
1083static bfd_boolean
351f65ca
L
1084elf_x86_64_check_tls_transition (bfd *abfd,
1085 struct bfd_link_info *info,
1086 asection *sec,
1087 bfd_byte *contents,
1088 Elf_Internal_Shdr *symtab_hdr,
1089 struct elf_link_hash_entry **sym_hashes,
1090 unsigned int r_type,
1091 const Elf_Internal_Rela *rel,
1092 const Elf_Internal_Rela *relend)
bffbf940 1093{
142411ca
L
1094 unsigned int val;
1095 unsigned long r_symndx;
1096 struct elf_link_hash_entry *h;
1097 bfd_vma offset;
351f65ca 1098 struct elf_x86_64_link_hash_table *htab;
142411ca
L
1099
1100 /* Get the section contents. */
1101 if (contents == NULL)
1102 {
1103 if (elf_section_data (sec)->this_hdr.contents != NULL)
1104 contents = elf_section_data (sec)->this_hdr.contents;
1105 else
1106 {
1107 /* FIXME: How to better handle error condition? */
1108 if (!bfd_malloc_and_get_section (abfd, sec, &contents))
1109 return FALSE;
bffbf940 1110
142411ca
L
1111 /* Cache the section contents for elf_link_input_bfd. */
1112 elf_section_data (sec)->this_hdr.contents = contents;
1113 }
1114 }
1115
351f65ca 1116 htab = elf_x86_64_hash_table (info);
142411ca 1117 offset = rel->r_offset;
bffbf940 1118 switch (r_type)
142411ca
L
1119 {
1120 case R_X86_64_TLSGD:
1121 case R_X86_64_TLSLD:
1122 if ((rel + 1) >= relend)
1123 return FALSE;
1124
1125 if (r_type == R_X86_64_TLSGD)
1126 {
52bc799a 1127 /* Check transition from GD access model. For 64bit, only
142411ca
L
1128 .byte 0x66; leaq foo@tlsgd(%rip), %rdi
1129 .word 0x6666; rex64; call __tls_get_addr
52bc799a
L
1130 can transit to different access model. For 32bit, only
1131 leaq foo@tlsgd(%rip), %rdi
1132 .word 0x6666; rex64; call __tls_get_addr
142411ca
L
1133 can transit to different access model. */
1134
fa289a5f
AM
1135 static const unsigned char call[] = { 0x66, 0x66, 0x48, 0xe8 };
1136 static const unsigned char leaq[] = { 0x66, 0x48, 0x8d, 0x3d };
1137
52bc799a 1138 if ((offset + 12) > sec->size
fa289a5f 1139 || memcmp (contents + offset + 4, call, 4) != 0)
142411ca 1140 return FALSE;
52bc799a
L
1141
1142 if (ABI_64_P (abfd))
1143 {
52bc799a 1144 if (offset < 4
fa289a5f 1145 || memcmp (contents + offset - 4, leaq, 4) != 0)
52bc799a
L
1146 return FALSE;
1147 }
1148 else
1149 {
52bc799a 1150 if (offset < 3
fa289a5f 1151 || memcmp (contents + offset - 3, leaq + 1, 3) != 0)
52bc799a
L
1152 return FALSE;
1153 }
142411ca
L
1154 }
1155 else
1156 {
1157 /* Check transition from LD access model. Only
1158 leaq foo@tlsld(%rip), %rdi;
1159 call __tls_get_addr
1160 can transit to different access model. */
1161
fa289a5f 1162 static const unsigned char lea[] = { 0x48, 0x8d, 0x3d };
142411ca
L
1163
1164 if (offset < 3 || (offset + 9) > sec->size)
1165 return FALSE;
1166
fa289a5f
AM
1167 if (memcmp (contents + offset - 3, lea, 3) != 0
1168 || 0xe8 != *(contents + offset + 4))
142411ca
L
1169 return FALSE;
1170 }
1171
351f65ca 1172 r_symndx = htab->r_sym (rel[1].r_info);
142411ca
L
1173 if (r_symndx < symtab_hdr->sh_info)
1174 return FALSE;
1175
1176 h = sym_hashes[r_symndx - symtab_hdr->sh_info];
c4fb387b 1177 /* Use strncmp to check __tls_get_addr since __tls_get_addr
eed180f8 1178 may be versioned. */
142411ca
L
1179 return (h != NULL
1180 && h->root.root.string != NULL
351f65ca
L
1181 && (ELF32_R_TYPE (rel[1].r_info) == R_X86_64_PC32
1182 || ELF32_R_TYPE (rel[1].r_info) == R_X86_64_PLT32)
c4fb387b
L
1183 && (strncmp (h->root.root.string,
1184 "__tls_get_addr", 14) == 0));
142411ca
L
1185
1186 case R_X86_64_GOTTPOFF:
1187 /* Check transition from IE access model:
4a4c5f25
L
1188 mov foo@gottpoff(%rip), %reg
1189 add foo@gottpoff(%rip), %reg
142411ca
L
1190 */
1191
4a4c5f25
L
1192 /* Check REX prefix first. */
1193 if (offset >= 3 && (offset + 4) <= sec->size)
1194 {
1195 val = bfd_get_8 (abfd, contents + offset - 3);
1196 if (val != 0x48 && val != 0x4c)
1197 {
1198 /* X32 may have 0x44 REX prefix or no REX prefix. */
1199 if (ABI_64_P (abfd))
1200 return FALSE;
1201 }
1202 }
1203 else
1204 {
1205 /* X32 may not have any REX prefix. */
1206 if (ABI_64_P (abfd))
1207 return FALSE;
1208 if (offset < 2 || (offset + 3) > sec->size)
1209 return FALSE;
1210 }
142411ca
L
1211
1212 val = bfd_get_8 (abfd, contents + offset - 2);
1213 if (val != 0x8b && val != 0x03)
1214 return FALSE;
1215
1216 val = bfd_get_8 (abfd, contents + offset - 1);
1217 return (val & 0xc7) == 5;
1218
1219 case R_X86_64_GOTPC32_TLSDESC:
1220 /* Check transition from GDesc access model:
1221 leaq x@tlsdesc(%rip), %rax
1222
1223 Make sure it's a leaq adding rip to a 32-bit offset
1224 into any register, although it's probably almost always
1225 going to be rax. */
1226
1227 if (offset < 3 || (offset + 4) > sec->size)
1228 return FALSE;
1229
1230 val = bfd_get_8 (abfd, contents + offset - 3);
1231 if ((val & 0xfb) != 0x48)
1232 return FALSE;
1233
1234 if (bfd_get_8 (abfd, contents + offset - 2) != 0x8d)
1235 return FALSE;
1236
1237 val = bfd_get_8 (abfd, contents + offset - 1);
1238 return (val & 0xc7) == 0x05;
1239
1240 case R_X86_64_TLSDESC_CALL:
1241 /* Check transition from GDesc access model:
1242 call *x@tlsdesc(%rax)
1243 */
1244 if (offset + 2 <= sec->size)
1245 {
1246 /* Make sure that it's a call *x@tlsdesc(%rax). */
fa289a5f
AM
1247 static const unsigned char call[] = { 0xff, 0x10 };
1248 return memcmp (contents + offset, call, 2) == 0;
142411ca
L
1249 }
1250
1251 return FALSE;
1252
1253 default:
1254 abort ();
1255 }
1256}
1257
1258/* Return TRUE if the TLS access transition is OK or no transition
1259 will be performed. Update R_TYPE if there is a transition. */
1260
1261static bfd_boolean
351f65ca
L
1262elf_x86_64_tls_transition (struct bfd_link_info *info, bfd *abfd,
1263 asection *sec, bfd_byte *contents,
1264 Elf_Internal_Shdr *symtab_hdr,
1265 struct elf_link_hash_entry **sym_hashes,
1266 unsigned int *r_type, int tls_type,
1267 const Elf_Internal_Rela *rel,
1268 const Elf_Internal_Rela *relend,
1269 struct elf_link_hash_entry *h,
1270 unsigned long r_symndx)
142411ca
L
1271{
1272 unsigned int from_type = *r_type;
1273 unsigned int to_type = from_type;
1274 bfd_boolean check = TRUE;
1275
bb1cb422
L
1276 /* Skip TLS transition for functions. */
1277 if (h != NULL
1278 && (h->type == STT_FUNC
1279 || h->type == STT_GNU_IFUNC))
1280 return TRUE;
1281
142411ca 1282 switch (from_type)
bffbf940
JJ
1283 {
1284 case R_X86_64_TLSGD:
67a4f2b7
AO
1285 case R_X86_64_GOTPC32_TLSDESC:
1286 case R_X86_64_TLSDESC_CALL:
bffbf940 1287 case R_X86_64_GOTTPOFF:
1d85728f 1288 if (info->executable)
142411ca
L
1289 {
1290 if (h == NULL)
1291 to_type = R_X86_64_TPOFF32;
1292 else
1293 to_type = R_X86_64_GOTTPOFF;
1294 }
1295
351f65ca 1296 /* When we are called from elf_x86_64_relocate_section,
142411ca
L
1297 CONTENTS isn't NULL and there may be additional transitions
1298 based on TLS_TYPE. */
1299 if (contents != NULL)
1300 {
1301 unsigned int new_to_type = to_type;
1302
1d85728f 1303 if (info->executable
142411ca
L
1304 && h != NULL
1305 && h->dynindx == -1
1306 && tls_type == GOT_TLS_IE)
1307 new_to_type = R_X86_64_TPOFF32;
1308
1309 if (to_type == R_X86_64_TLSGD
1310 || to_type == R_X86_64_GOTPC32_TLSDESC
1311 || to_type == R_X86_64_TLSDESC_CALL)
1312 {
1313 if (tls_type == GOT_TLS_IE)
1314 new_to_type = R_X86_64_GOTTPOFF;
1315 }
1316
1317 /* We checked the transition before when we were called from
351f65ca 1318 elf_x86_64_check_relocs. We only want to check the new
142411ca
L
1319 transition which hasn't been checked before. */
1320 check = new_to_type != to_type && from_type == to_type;
1321 to_type = new_to_type;
1322 }
1323
1324 break;
1325
bffbf940 1326 case R_X86_64_TLSLD:
1d85728f 1327 if (info->executable)
142411ca
L
1328 to_type = R_X86_64_TPOFF32;
1329 break;
1330
1331 default:
1332 return TRUE;
bffbf940
JJ
1333 }
1334
142411ca
L
1335 /* Return TRUE if there is no transition. */
1336 if (from_type == to_type)
1337 return TRUE;
1338
1339 /* Check if the transition can be performed. */
1340 if (check
351f65ca
L
1341 && ! elf_x86_64_check_tls_transition (abfd, info, sec, contents,
1342 symtab_hdr, sym_hashes,
1343 from_type, rel, relend))
142411ca 1344 {
2f629d23 1345 reloc_howto_type *from, *to;
4c544807 1346 const char *name;
142411ca 1347
351f65ca
L
1348 from = elf_x86_64_rtype_to_howto (abfd, from_type);
1349 to = elf_x86_64_rtype_to_howto (abfd, to_type);
142411ca 1350
4c544807
L
1351 if (h)
1352 name = h->root.root.string;
1353 else
1354 {
351f65ca 1355 struct elf_x86_64_link_hash_table *htab;
4dfe6ac6 1356
351f65ca 1357 htab = elf_x86_64_hash_table (info);
4dfe6ac6
NC
1358 if (htab == NULL)
1359 name = "*unknown*";
1360 else
1361 {
1362 Elf_Internal_Sym *isym;
1363
1364 isym = bfd_sym_from_r_symndx (&htab->sym_cache,
1365 abfd, r_symndx);
1366 name = bfd_elf_sym_name (abfd, symtab_hdr, isym, NULL);
1367 }
4c544807
L
1368 }
1369
142411ca
L
1370 (*_bfd_error_handler)
1371 (_("%B: TLS transition from %s to %s against `%s' at 0x%lx "
1372 "in section `%A' failed"),
4c544807 1373 abfd, sec, from->name, to->name, name,
142411ca
L
1374 (unsigned long) rel->r_offset);
1375 bfd_set_error (bfd_error_bad_value);
1376 return FALSE;
1377 }
1378
1379 *r_type = to_type;
1380 return TRUE;
bffbf940
JJ
1381}
1382
70256ad8 1383/* Look through the relocs for a section during the first phase, and
c434dee6
AJ
1384 calculate needed space in the global offset table, procedure
1385 linkage table, and dynamic reloc sections. */
70256ad8 1386
b34976b6 1387static bfd_boolean
351f65ca
L
1388elf_x86_64_check_relocs (bfd *abfd, struct bfd_link_info *info,
1389 asection *sec,
1390 const Elf_Internal_Rela *relocs)
70256ad8 1391{
351f65ca 1392 struct elf_x86_64_link_hash_table *htab;
70256ad8
AJ
1393 Elf_Internal_Shdr *symtab_hdr;
1394 struct elf_link_hash_entry **sym_hashes;
70256ad8
AJ
1395 const Elf_Internal_Rela *rel;
1396 const Elf_Internal_Rela *rel_end;
70256ad8
AJ
1397 asection *sreloc;
1398
1049f94e 1399 if (info->relocatable)
b34976b6 1400 return TRUE;
70256ad8 1401
0ffa91dd
NC
1402 BFD_ASSERT (is_x86_64_elf (abfd));
1403
351f65ca 1404 htab = elf_x86_64_hash_table (info);
4dfe6ac6
NC
1405 if (htab == NULL)
1406 return FALSE;
1407
0ffa91dd 1408 symtab_hdr = &elf_symtab_hdr (abfd);
70256ad8 1409 sym_hashes = elf_sym_hashes (abfd);
70256ad8 1410
c434dee6 1411 sreloc = NULL;
cbe950e9 1412
70256ad8
AJ
1413 rel_end = relocs + sec->reloc_count;
1414 for (rel = relocs; rel < rel_end; rel++)
1415 {
bffbf940 1416 unsigned int r_type;
70256ad8
AJ
1417 unsigned long r_symndx;
1418 struct elf_link_hash_entry *h;
4c544807
L
1419 Elf_Internal_Sym *isym;
1420 const char *name;
70256ad8 1421
351f65ca
L
1422 r_symndx = htab->r_sym (rel->r_info);
1423 r_type = ELF32_R_TYPE (rel->r_info);
c434dee6
AJ
1424
1425 if (r_symndx >= NUM_SHDR_ENTRIES (symtab_hdr))
1426 {
d003868e
AM
1427 (*_bfd_error_handler) (_("%B: bad symbol index: %d"),
1428 abfd, r_symndx);
b34976b6 1429 return FALSE;
c434dee6
AJ
1430 }
1431
70256ad8 1432 if (r_symndx < symtab_hdr->sh_info)
c25bc9fc
L
1433 {
1434 /* A local symbol. */
c2e61a4e
L
1435 isym = bfd_sym_from_r_symndx (&htab->sym_cache,
1436 abfd, r_symndx);
1437 if (isym == NULL)
1438 return FALSE;
c25bc9fc
L
1439
1440 /* Check relocation against local STT_GNU_IFUNC symbol. */
351f65ca 1441 if (ELF_ST_TYPE (isym->st_info) == STT_GNU_IFUNC)
c25bc9fc 1442 {
351f65ca
L
1443 h = elf_x86_64_get_local_sym_hash (htab, abfd, rel,
1444 TRUE);
c25bc9fc 1445 if (h == NULL)
c2e61a4e 1446 return FALSE;
6bbec505 1447
c25bc9fc
L
1448 /* Fake a STT_GNU_IFUNC symbol. */
1449 h->type = STT_GNU_IFUNC;
1450 h->def_regular = 1;
1451 h->ref_regular = 1;
1452 h->forced_local = 1;
1453 h->root.type = bfd_link_hash_defined;
1454 }
1455 else
1456 h = NULL;
1457 }
70256ad8 1458 else
71cb9464 1459 {
4c544807 1460 isym = NULL;
71cb9464
L
1461 h = sym_hashes[r_symndx - symtab_hdr->sh_info];
1462 while (h->root.type == bfd_link_hash_indirect
1463 || h->root.type == bfd_link_hash_warning)
1464 h = (struct elf_link_hash_entry *) h->root.u.i.link;
c25bc9fc 1465 }
cbe950e9 1466
d1534d16
L
1467 /* Check invalid x32 relocations. */
1468 if (!ABI_64_P (abfd))
1469 switch (r_type)
1470 {
1471 default:
1472 break;
1473
d1534d16
L
1474 case R_X86_64_DTPOFF64:
1475 case R_X86_64_TPOFF64:
1476 case R_X86_64_PC64:
1477 case R_X86_64_GOTOFF64:
1478 case R_X86_64_GOT64:
1479 case R_X86_64_GOTPCREL64:
1480 case R_X86_64_GOTPC64:
1481 case R_X86_64_GOTPLT64:
1482 case R_X86_64_PLTOFF64:
1483 {
1484 if (h)
1485 name = h->root.root.string;
1486 else
1487 name = bfd_elf_sym_name (abfd, symtab_hdr, isym,
1488 NULL);
1489 (*_bfd_error_handler)
1490 (_("%B: relocation %s against symbol `%s' isn't "
1491 "supported in x32 mode"), abfd,
1492 x86_64_elf_howto_table[r_type].name, name);
1493 bfd_set_error (bfd_error_bad_value);
1494 return FALSE;
1495 }
1496 break;
1497 }
1498
c25bc9fc
L
1499 if (h != NULL)
1500 {
cbe950e9
L
1501 /* Create the ifunc sections for static executables. If we
1502 never see an indirect function symbol nor we are building
1503 a static executable, those sections will be empty and
1504 won't appear in output. */
1505 switch (r_type)
1506 {
1507 default:
1508 break;
1509
1510 case R_X86_64_32S:
1511 case R_X86_64_32:
1512 case R_X86_64_64:
1513 case R_X86_64_PC32:
1514 case R_X86_64_PC64:
1515 case R_X86_64_PLT32:
1516 case R_X86_64_GOTPCREL:
1517 case R_X86_64_GOTPCREL64:
9d4057ee
AM
1518 if (htab->elf.dynobj == NULL)
1519 htab->elf.dynobj = abfd;
1520 if (!_bfd_elf_create_ifunc_sections (htab->elf.dynobj, info))
c2e61a4e 1521 return FALSE;
cbe950e9
L
1522 break;
1523 }
1524
1525 /* Since STT_GNU_IFUNC symbol must go through PLT, we handle
1526 it here if it is defined in a non-shared object. */
1527 if (h->type == STT_GNU_IFUNC
1528 && h->def_regular)
1529 {
1530 /* It is referenced by a non-shared object. */
1531 h->ref_regular = 1;
7ae26bc1 1532 h->needs_plt = 1;
6bbec505 1533
cbe950e9
L
1534 /* STT_GNU_IFUNC symbol must go through PLT. */
1535 h->plt.refcount += 1;
1536
1537 /* STT_GNU_IFUNC needs dynamic sections. */
1538 if (htab->elf.dynobj == NULL)
1539 htab->elf.dynobj = abfd;
1540
1541 switch (r_type)
1542 {
048cbda4 1543 default:
4c544807
L
1544 if (h->root.root.string)
1545 name = h->root.root.string;
1546 else
1547 name = bfd_elf_sym_name (abfd, symtab_hdr, isym,
1548 NULL);
048cbda4
L
1549 (*_bfd_error_handler)
1550 (_("%B: relocation %s against STT_GNU_IFUNC "
1551 "symbol `%s' isn't handled by %s"), abfd,
1552 x86_64_elf_howto_table[r_type].name,
4c544807 1553 name, __FUNCTION__);
048cbda4 1554 bfd_set_error (bfd_error_bad_value);
c2e61a4e 1555 return FALSE;
cbe950e9 1556
248775ba
L
1557 case R_X86_64_32:
1558 if (ABI_64_P (abfd))
1559 goto not_pointer;
710ab287
L
1560 case R_X86_64_64:
1561 h->non_got_ref = 1;
1562 h->pointer_equality_needed = 1;
1563 if (info->shared)
1564 {
710ab287
L
1565 /* We must copy these reloc types into the output
1566 file. Create a reloc section in dynobj and
1567 make room for this reloc. */
e03a8ed8
L
1568 sreloc = _bfd_elf_create_ifunc_dyn_reloc
1569 (abfd, info, sec, sreloc,
351f65ca 1570 &((struct elf_x86_64_link_hash_entry *) h)->dyn_relocs);
710ab287 1571 if (sreloc == NULL)
c2e61a4e 1572 return FALSE;
710ab287
L
1573 }
1574 break;
1575
cbe950e9 1576 case R_X86_64_32S:
cbe950e9
L
1577 case R_X86_64_PC32:
1578 case R_X86_64_PC64:
248775ba 1579not_pointer:
cbe950e9
L
1580 h->non_got_ref = 1;
1581 if (r_type != R_X86_64_PC32
1582 && r_type != R_X86_64_PC64)
1583 h->pointer_equality_needed = 1;
1584 break;
1585
1586 case R_X86_64_PLT32:
1587 break;
1588
1589 case R_X86_64_GOTPCREL:
1590 case R_X86_64_GOTPCREL64:
7afd84dc 1591 h->got.refcount += 1;
6de2ae4a
L
1592 if (htab->elf.sgot == NULL
1593 && !_bfd_elf_create_got_section (htab->elf.dynobj,
1594 info))
c2e61a4e 1595 return FALSE;
cbe950e9
L
1596 break;
1597 }
1598
1599 continue;
1600 }
71cb9464 1601 }
70256ad8 1602
351f65ca
L
1603 if (! elf_x86_64_tls_transition (info, abfd, sec, NULL,
1604 symtab_hdr, sym_hashes,
1605 &r_type, GOT_UNKNOWN,
1606 rel, rel_end, h, r_symndx))
c2e61a4e 1607 return FALSE;
142411ca 1608
bffbf940 1609 switch (r_type)
70256ad8 1610 {
bffbf940
JJ
1611 case R_X86_64_TLSLD:
1612 htab->tls_ld_got.refcount += 1;
1613 goto create_got;
1614
1615 case R_X86_64_TPOFF32:
351f65ca 1616 if (!info->executable && ABI_64_P (abfd))
70256ad8 1617 {
09a24cbf 1618 if (h)
4c544807
L
1619 name = h->root.root.string;
1620 else
1621 name = bfd_elf_sym_name (abfd, symtab_hdr, isym,
1622 NULL);
bffbf940 1623 (*_bfd_error_handler)
d003868e
AM
1624 (_("%B: relocation %s against `%s' can not be used when making a shared object; recompile with -fPIC"),
1625 abfd,
4c544807 1626 x86_64_elf_howto_table[r_type].name, name);
bffbf940 1627 bfd_set_error (bfd_error_bad_value);
c2e61a4e 1628 return FALSE;
70256ad8 1629 }
bffbf940 1630 break;
c434dee6 1631
bffbf940 1632 case R_X86_64_GOTTPOFF:
1d85728f 1633 if (!info->executable)
bffbf940
JJ
1634 info->flags |= DF_STATIC_TLS;
1635 /* Fall through */
70256ad8 1636
bffbf940
JJ
1637 case R_X86_64_GOT32:
1638 case R_X86_64_GOTPCREL:
1639 case R_X86_64_TLSGD:
7b81dfbb
AJ
1640 case R_X86_64_GOT64:
1641 case R_X86_64_GOTPCREL64:
1642 case R_X86_64_GOTPLT64:
67a4f2b7
AO
1643 case R_X86_64_GOTPC32_TLSDESC:
1644 case R_X86_64_TLSDESC_CALL:
bffbf940
JJ
1645 /* This symbol requires a global offset table entry. */
1646 {
1647 int tls_type, old_tls_type;
1648
1649 switch (r_type)
1650 {
1651 default: tls_type = GOT_NORMAL; break;
1652 case R_X86_64_TLSGD: tls_type = GOT_TLS_GD; break;
1653 case R_X86_64_GOTTPOFF: tls_type = GOT_TLS_IE; break;
67a4f2b7
AO
1654 case R_X86_64_GOTPC32_TLSDESC:
1655 case R_X86_64_TLSDESC_CALL:
1656 tls_type = GOT_TLS_GDESC; break;
bffbf940
JJ
1657 }
1658
1659 if (h != NULL)
1660 {
7b81dfbb
AJ
1661 if (r_type == R_X86_64_GOTPLT64)
1662 {
1663 /* This relocation indicates that we also need
1664 a PLT entry, as this is a function. We don't need
1665 a PLT entry for local symbols. */
1666 h->needs_plt = 1;
1667 h->plt.refcount += 1;
1668 }
bffbf940 1669 h->got.refcount += 1;
351f65ca 1670 old_tls_type = elf_x86_64_hash_entry (h)->tls_type;
bffbf940
JJ
1671 }
1672 else
1673 {
1674 bfd_signed_vma *local_got_refcounts;
1675
1676 /* This is a global offset table entry for a local symbol. */
1677 local_got_refcounts = elf_local_got_refcounts (abfd);
1678 if (local_got_refcounts == NULL)
1679 {
1680 bfd_size_type size;
1681
1682 size = symtab_hdr->sh_info;
67a4f2b7
AO
1683 size *= sizeof (bfd_signed_vma)
1684 + sizeof (bfd_vma) + sizeof (char);
bffbf940
JJ
1685 local_got_refcounts = ((bfd_signed_vma *)
1686 bfd_zalloc (abfd, size));
1687 if (local_got_refcounts == NULL)
c2e61a4e 1688 return FALSE;
bffbf940 1689 elf_local_got_refcounts (abfd) = local_got_refcounts;
351f65ca 1690 elf_x86_64_local_tlsdesc_gotent (abfd)
67a4f2b7 1691 = (bfd_vma *) (local_got_refcounts + symtab_hdr->sh_info);
351f65ca 1692 elf_x86_64_local_got_tls_type (abfd)
67a4f2b7 1693 = (char *) (local_got_refcounts + 2 * symtab_hdr->sh_info);
bffbf940
JJ
1694 }
1695 local_got_refcounts[r_symndx] += 1;
1696 old_tls_type
351f65ca 1697 = elf_x86_64_local_got_tls_type (abfd) [r_symndx];
bffbf940
JJ
1698 }
1699
1700 /* If a TLS symbol is accessed using IE at least once,
1701 there is no point to use dynamic model for it. */
1702 if (old_tls_type != tls_type && old_tls_type != GOT_UNKNOWN
67a4f2b7
AO
1703 && (! GOT_TLS_GD_ANY_P (old_tls_type)
1704 || tls_type != GOT_TLS_IE))
bffbf940 1705 {
67a4f2b7 1706 if (old_tls_type == GOT_TLS_IE && GOT_TLS_GD_ANY_P (tls_type))
bffbf940 1707 tls_type = old_tls_type;
67a4f2b7
AO
1708 else if (GOT_TLS_GD_ANY_P (old_tls_type)
1709 && GOT_TLS_GD_ANY_P (tls_type))
1710 tls_type |= old_tls_type;
bffbf940
JJ
1711 else
1712 {
09a24cbf 1713 if (h)
4c544807
L
1714 name = h->root.root.string;
1715 else
1716 name = bfd_elf_sym_name (abfd, symtab_hdr,
1717 isym, NULL);
bffbf940 1718 (*_bfd_error_handler)
1f7a4e42 1719 (_("%B: '%s' accessed both as normal and thread local symbol"),
4c544807 1720 abfd, name);
c2e61a4e 1721 return FALSE;
bffbf940
JJ
1722 }
1723 }
1724
1725 if (old_tls_type != tls_type)
1726 {
1727 if (h != NULL)
351f65ca 1728 elf_x86_64_hash_entry (h)->tls_type = tls_type;
bffbf940 1729 else
351f65ca 1730 elf_x86_64_local_got_tls_type (abfd) [r_symndx] = tls_type;
bffbf940
JJ
1731 }
1732 }
c434dee6
AJ
1733 /* Fall through */
1734
d6ab8113
JB
1735 case R_X86_64_GOTOFF64:
1736 case R_X86_64_GOTPC32:
7b81dfbb 1737 case R_X86_64_GOTPC64:
bffbf940 1738 create_got:
6de2ae4a 1739 if (htab->elf.sgot == NULL)
c434dee6
AJ
1740 {
1741 if (htab->elf.dynobj == NULL)
1742 htab->elf.dynobj = abfd;
6de2ae4a
L
1743 if (!_bfd_elf_create_got_section (htab->elf.dynobj,
1744 info))
c2e61a4e 1745 return FALSE;
c434dee6 1746 }
70256ad8
AJ
1747 break;
1748
1749 case R_X86_64_PLT32:
1750 /* This symbol requires a procedure linkage table entry. We
407443a3
AJ
1751 actually build the entry in adjust_dynamic_symbol,
1752 because this might be a case of linking PIC code which is
1753 never referenced by a dynamic object, in which case we
1754 don't need to generate a procedure linkage table entry
1755 after all. */
70256ad8
AJ
1756
1757 /* If this is a local symbol, we resolve it directly without
407443a3 1758 creating a procedure linkage table entry. */
70256ad8
AJ
1759 if (h == NULL)
1760 continue;
1761
f5385ebf 1762 h->needs_plt = 1;
51b64d56 1763 h->plt.refcount += 1;
70256ad8
AJ
1764 break;
1765
7b81dfbb
AJ
1766 case R_X86_64_PLTOFF64:
1767 /* This tries to form the 'address' of a function relative
1768 to GOT. For global symbols we need a PLT entry. */
1769 if (h != NULL)
1770 {
1771 h->needs_plt = 1;
1772 h->plt.refcount += 1;
1773 }
1774 goto create_got;
1775
248775ba
L
1776 case R_X86_64_32:
1777 if (!ABI_64_P (abfd))
1778 goto pointer;
cc78d0af
AJ
1779 case R_X86_64_8:
1780 case R_X86_64_16:
70256ad8 1781 case R_X86_64_32S:
1b71fb54
AJ
1782 /* Let's help debug shared library creation. These relocs
1783 cannot be used in shared libs. Don't error out for
1784 sections we don't care about, such as debug sections or
1785 non-constant sections. */
1786 if (info->shared
1787 && (sec->flags & SEC_ALLOC) != 0
1788 && (sec->flags & SEC_READONLY) != 0)
1789 {
09a24cbf 1790 if (h)
4c544807
L
1791 name = h->root.root.string;
1792 else
1793 name = bfd_elf_sym_name (abfd, symtab_hdr, isym, NULL);
1b71fb54 1794 (*_bfd_error_handler)
d003868e 1795 (_("%B: relocation %s against `%s' can not be used when making a shared object; recompile with -fPIC"),
4c544807 1796 abfd, x86_64_elf_howto_table[r_type].name, name);
1b71fb54 1797 bfd_set_error (bfd_error_bad_value);
c2e61a4e 1798 return FALSE;
1b71fb54
AJ
1799 }
1800 /* Fall through. */
1801
c434dee6
AJ
1802 case R_X86_64_PC8:
1803 case R_X86_64_PC16:
70256ad8 1804 case R_X86_64_PC32:
d6ab8113 1805 case R_X86_64_PC64:
1b71fb54 1806 case R_X86_64_64:
248775ba 1807pointer:
710ab287 1808 if (h != NULL && info->executable)
c434dee6
AJ
1809 {
1810 /* If this reloc is in a read-only section, we might
1811 need a copy reloc. We can't check reliably at this
1812 stage whether the section is read-only, as input
1813 sections have not yet been mapped to output sections.
1814 Tentatively set the flag for now, and correct in
1815 adjust_dynamic_symbol. */
f5385ebf 1816 h->non_got_ref = 1;
c434dee6
AJ
1817
1818 /* We may need a .plt entry if the function this reloc
1819 refers to is in a shared lib. */
1820 h->plt.refcount += 1;
d6ab8113 1821 if (r_type != R_X86_64_PC32 && r_type != R_X86_64_PC64)
f5385ebf 1822 h->pointer_equality_needed = 1;
c434dee6 1823 }
70256ad8
AJ
1824
1825 /* If we are creating a shared library, and this is a reloc
1826 against a global symbol, or a non PC relative reloc
1827 against a local symbol, then we need to copy the reloc
1828 into the shared library. However, if we are linking with
1829 -Bsymbolic, we do not need to copy a reloc against a
1830 global symbol which is defined in an object we are
407443a3 1831 including in the link (i.e., DEF_REGULAR is set). At
70256ad8
AJ
1832 this point we have not seen all the input files, so it is
1833 possible that DEF_REGULAR is not set now but will be set
c434dee6
AJ
1834 later (it is never cleared). In case of a weak definition,
1835 DEF_REGULAR may be cleared later by a strong definition in
1836 a shared library. We account for that possibility below by
1837 storing information in the relocs_copied field of the hash
1838 table entry. A similar situation occurs when creating
1839 shared libraries and symbol visibility changes render the
1840 symbol local.
1841
1842 If on the other hand, we are creating an executable, we
1843 may need to keep relocations for symbols satisfied by a
1844 dynamic library if we manage to avoid copy relocs for the
0f88be7a 1845 symbol. */
c434dee6
AJ
1846 if ((info->shared
1847 && (sec->flags & SEC_ALLOC) != 0
d8045f23 1848 && (! IS_X86_64_PCREL_TYPE (r_type)
c434dee6 1849 || (h != NULL
55255dae 1850 && (! SYMBOLIC_BIND (info, h)
c434dee6 1851 || h->root.type == bfd_link_hash_defweak
f5385ebf 1852 || !h->def_regular))))
d40d037c
AJ
1853 || (ELIMINATE_COPY_RELOCS
1854 && !info->shared
c434dee6
AJ
1855 && (sec->flags & SEC_ALLOC) != 0
1856 && h != NULL
1857 && (h->root.type == bfd_link_hash_defweak
0f88be7a 1858 || !h->def_regular)))
70256ad8 1859 {
e03a8ed8
L
1860 struct elf_dyn_relocs *p;
1861 struct elf_dyn_relocs **head;
c434dee6
AJ
1862
1863 /* We must copy these reloc types into the output file.
1864 Create a reloc section in dynobj and make room for
1865 this reloc. */
70256ad8
AJ
1866 if (sreloc == NULL)
1867 {
c434dee6
AJ
1868 if (htab->elf.dynobj == NULL)
1869 htab->elf.dynobj = abfd;
1870
83bac4b0 1871 sreloc = _bfd_elf_make_dynamic_reloc_section
82e96e07
L
1872 (sec, htab->elf.dynobj, ABI_64_P (abfd) ? 3 : 2,
1873 abfd, /*rela?*/ TRUE);
70256ad8 1874
70256ad8 1875 if (sreloc == NULL)
c2e61a4e 1876 return FALSE;
70256ad8
AJ
1877 }
1878
c434dee6
AJ
1879 /* If this is a global symbol, we count the number of
1880 relocations we need for this symbol. */
1881 if (h != NULL)
70256ad8 1882 {
351f65ca 1883 head = &((struct elf_x86_64_link_hash_entry *) h)->dyn_relocs;
c434dee6
AJ
1884 }
1885 else
1886 {
1887 /* Track dynamic relocs needed for local syms too.
1888 We really need local syms available to do this
1889 easily. Oh well. */
c434dee6 1890 asection *s;
87d72d41 1891 void **vpp;
87d72d41
AM
1892
1893 isym = bfd_sym_from_r_symndx (&htab->sym_cache,
1894 abfd, r_symndx);
1895 if (isym == NULL)
1896 return FALSE;
1897
1898 s = bfd_section_from_elf_index (abfd, isym->st_shndx);
c434dee6 1899 if (s == NULL)
87d72d41 1900 s = sec;
70256ad8 1901
e81d3500
DD
1902 /* Beware of type punned pointers vs strict aliasing
1903 rules. */
1904 vpp = &(elf_section_data (s)->local_dynrel);
e03a8ed8 1905 head = (struct elf_dyn_relocs **)vpp;
c434dee6 1906 }
70256ad8 1907
c434dee6
AJ
1908 p = *head;
1909 if (p == NULL || p->sec != sec)
1910 {
1911 bfd_size_type amt = sizeof *p;
d8045f23 1912
e03a8ed8 1913 p = ((struct elf_dyn_relocs *)
c434dee6 1914 bfd_alloc (htab->elf.dynobj, amt));
70256ad8 1915 if (p == NULL)
c2e61a4e 1916 return FALSE;
c434dee6
AJ
1917 p->next = *head;
1918 *head = p;
1919 p->sec = sec;
1920 p->count = 0;
1921 p->pc_count = 0;
70256ad8 1922 }
c434dee6
AJ
1923
1924 p->count += 1;
d8045f23 1925 if (IS_X86_64_PCREL_TYPE (r_type))
c434dee6 1926 p->pc_count += 1;
70256ad8
AJ
1927 }
1928 break;
fe4770f4
AJ
1929
1930 /* This relocation describes the C++ object vtable hierarchy.
1931 Reconstruct it for later use during GC. */
1932 case R_X86_64_GNU_VTINHERIT:
c152c796 1933 if (!bfd_elf_gc_record_vtinherit (abfd, sec, h, rel->r_offset))
c2e61a4e 1934 return FALSE;
fe4770f4
AJ
1935 break;
1936
1937 /* This relocation describes which C++ vtable entries are actually
1938 used. Record for later use during GC. */
1939 case R_X86_64_GNU_VTENTRY:
d17e0c6e
JB
1940 BFD_ASSERT (h != NULL);
1941 if (h != NULL
1942 && !bfd_elf_gc_record_vtentry (abfd, sec, h, rel->r_addend))
c2e61a4e 1943 return FALSE;
fe4770f4 1944 break;
c434dee6
AJ
1945
1946 default:
1947 break;
70256ad8
AJ
1948 }
1949 }
1950
b34976b6 1951 return TRUE;
70256ad8
AJ
1952}
1953
1954/* Return the section that should be marked against GC for a given
407443a3 1955 relocation. */
70256ad8
AJ
1956
1957static asection *
351f65ca
L
1958elf_x86_64_gc_mark_hook (asection *sec,
1959 struct bfd_link_info *info,
1960 Elf_Internal_Rela *rel,
1961 struct elf_link_hash_entry *h,
1962 Elf_Internal_Sym *sym)
70256ad8
AJ
1963{
1964 if (h != NULL)
351f65ca 1965 switch (ELF32_R_TYPE (rel->r_info))
07adf181
AM
1966 {
1967 case R_X86_64_GNU_VTINHERIT:
1968 case R_X86_64_GNU_VTENTRY:
1969 return NULL;
1970 }
1971
1972 return _bfd_elf_gc_mark_hook (sec, info, rel, h, sym);
70256ad8
AJ
1973}
1974
407443a3 1975/* Update the got entry reference counts for the section being removed. */
70256ad8 1976
b34976b6 1977static bfd_boolean
351f65ca
L
1978elf_x86_64_gc_sweep_hook (bfd *abfd, struct bfd_link_info *info,
1979 asection *sec,
1980 const Elf_Internal_Rela *relocs)
70256ad8 1981{
351f65ca 1982 struct elf_x86_64_link_hash_table *htab;
70256ad8
AJ
1983 Elf_Internal_Shdr *symtab_hdr;
1984 struct elf_link_hash_entry **sym_hashes;
1985 bfd_signed_vma *local_got_refcounts;
1986 const Elf_Internal_Rela *rel, *relend;
c434dee6 1987
7dda2462
TG
1988 if (info->relocatable)
1989 return TRUE;
1990
351f65ca 1991 htab = elf_x86_64_hash_table (info);
4dfe6ac6
NC
1992 if (htab == NULL)
1993 return FALSE;
1994
c434dee6 1995 elf_section_data (sec)->local_dynrel = NULL;
70256ad8 1996
0ffa91dd 1997 symtab_hdr = &elf_symtab_hdr (abfd);
70256ad8
AJ
1998 sym_hashes = elf_sym_hashes (abfd);
1999 local_got_refcounts = elf_local_got_refcounts (abfd);
2000
351f65ca 2001 htab = elf_x86_64_hash_table (info);
70256ad8
AJ
2002 relend = relocs + sec->reloc_count;
2003 for (rel = relocs; rel < relend; rel++)
26e41594
AM
2004 {
2005 unsigned long r_symndx;
2006 unsigned int r_type;
2007 struct elf_link_hash_entry *h = NULL;
70256ad8 2008
351f65ca 2009 r_symndx = htab->r_sym (rel->r_info);
26e41594
AM
2010 if (r_symndx >= symtab_hdr->sh_info)
2011 {
26e41594 2012 h = sym_hashes[r_symndx - symtab_hdr->sh_info];
3eb128b2
AM
2013 while (h->root.type == bfd_link_hash_indirect
2014 || h->root.type == bfd_link_hash_warning)
2015 h = (struct elf_link_hash_entry *) h->root.u.i.link;
26e41594 2016 }
bb1cb422
L
2017 else
2018 {
2019 /* A local symbol. */
2020 Elf_Internal_Sym *isym;
2021
2022 isym = bfd_sym_from_r_symndx (&htab->sym_cache,
2023 abfd, r_symndx);
2024
2025 /* Check relocation against local STT_GNU_IFUNC symbol. */
2026 if (isym != NULL
82e96e07 2027 && ELF_ST_TYPE (isym->st_info) == STT_GNU_IFUNC)
bb1cb422 2028 {
351f65ca 2029 h = elf_x86_64_get_local_sym_hash (htab, abfd, rel, FALSE);
bb1cb422
L
2030 if (h == NULL)
2031 abort ();
2032 }
2033 }
c434dee6 2034
3db2e7dd
L
2035 if (h)
2036 {
2037 struct elf_x86_64_link_hash_entry *eh;
2038 struct elf_dyn_relocs **pp;
2039 struct elf_dyn_relocs *p;
2040
2041 eh = (struct elf_x86_64_link_hash_entry *) h;
2042
2043 for (pp = &eh->dyn_relocs; (p = *pp) != NULL; pp = &p->next)
2044 if (p->sec == sec)
2045 {
2046 /* Everything must go for SEC. */
2047 *pp = p->next;
2048 break;
2049 }
2050 }
2051
351f65ca
L
2052 r_type = ELF32_R_TYPE (rel->r_info);
2053 if (! elf_x86_64_tls_transition (info, abfd, sec, NULL,
2054 symtab_hdr, sym_hashes,
2055 &r_type, GOT_UNKNOWN,
2056 rel, relend, h, r_symndx))
142411ca
L
2057 return FALSE;
2058
26e41594
AM
2059 switch (r_type)
2060 {
2061 case R_X86_64_TLSLD:
4dfe6ac6
NC
2062 if (htab->tls_ld_got.refcount > 0)
2063 htab->tls_ld_got.refcount -= 1;
26e41594 2064 break;
c434dee6 2065
26e41594 2066 case R_X86_64_TLSGD:
67a4f2b7
AO
2067 case R_X86_64_GOTPC32_TLSDESC:
2068 case R_X86_64_TLSDESC_CALL:
26e41594
AM
2069 case R_X86_64_GOTTPOFF:
2070 case R_X86_64_GOT32:
2071 case R_X86_64_GOTPCREL:
7b81dfbb
AJ
2072 case R_X86_64_GOT64:
2073 case R_X86_64_GOTPCREL64:
2074 case R_X86_64_GOTPLT64:
26e41594
AM
2075 if (h != NULL)
2076 {
7b81dfbb 2077 if (r_type == R_X86_64_GOTPLT64 && h->plt.refcount > 0)
eed180f8 2078 h->plt.refcount -= 1;
26e41594
AM
2079 if (h->got.refcount > 0)
2080 h->got.refcount -= 1;
bb1cb422
L
2081 if (h->type == STT_GNU_IFUNC)
2082 {
2083 if (h->plt.refcount > 0)
2084 h->plt.refcount -= 1;
2085 }
26e41594
AM
2086 }
2087 else if (local_got_refcounts != NULL)
2088 {
2089 if (local_got_refcounts[r_symndx] > 0)
2090 local_got_refcounts[r_symndx] -= 1;
2091 }
2092 break;
c434dee6 2093
26e41594
AM
2094 case R_X86_64_8:
2095 case R_X86_64_16:
2096 case R_X86_64_32:
2097 case R_X86_64_64:
2098 case R_X86_64_32S:
2099 case R_X86_64_PC8:
2100 case R_X86_64_PC16:
2101 case R_X86_64_PC32:
d6ab8113 2102 case R_X86_64_PC64:
3db2e7dd
L
2103 if (info->shared
2104 && (h == NULL || h->type != STT_GNU_IFUNC))
26e41594
AM
2105 break;
2106 /* Fall thru */
c434dee6 2107
26e41594 2108 case R_X86_64_PLT32:
7b81dfbb 2109 case R_X86_64_PLTOFF64:
26e41594
AM
2110 if (h != NULL)
2111 {
2112 if (h->plt.refcount > 0)
2113 h->plt.refcount -= 1;
2114 }
2115 break;
70256ad8 2116
26e41594
AM
2117 default:
2118 break;
2119 }
2120 }
70256ad8 2121
b34976b6 2122 return TRUE;
70256ad8
AJ
2123}
2124
2125/* Adjust a symbol defined by a dynamic object and referenced by a
2126 regular object. The current definition is in some section of the
2127 dynamic object, but we're not including those sections. We have to
2128 change the definition to something the rest of the link can
407443a3 2129 understand. */
70256ad8 2130
b34976b6 2131static bfd_boolean
351f65ca
L
2132elf_x86_64_adjust_dynamic_symbol (struct bfd_link_info *info,
2133 struct elf_link_hash_entry *h)
70256ad8 2134{
351f65ca 2135 struct elf_x86_64_link_hash_table *htab;
70256ad8 2136 asection *s;
70256ad8 2137
cbe950e9
L
2138 /* STT_GNU_IFUNC symbol must go through PLT. */
2139 if (h->type == STT_GNU_IFUNC)
2140 {
2141 if (h->plt.refcount <= 0)
2142 {
2143 h->plt.offset = (bfd_vma) -1;
2144 h->needs_plt = 0;
2145 }
2146 return TRUE;
2147 }
2148
70256ad8
AJ
2149 /* If this is a function, put it in the procedure linkage table. We
2150 will fill in the contents of the procedure linkage table later,
2151 when we know the address of the .got section. */
2152 if (h->type == STT_FUNC
f5385ebf 2153 || h->needs_plt)
70256ad8 2154 {
c434dee6 2155 if (h->plt.refcount <= 0
27482721
AJ
2156 || SYMBOL_CALLS_LOCAL (info, h)
2157 || (ELF_ST_VISIBILITY (h->other) != STV_DEFAULT
2158 && h->root.type == bfd_link_hash_undefweak))
70256ad8 2159 {
70256ad8
AJ
2160 /* This case can occur if we saw a PLT32 reloc in an input
2161 file, but the symbol was never referred to by a dynamic
2162 object, or if all references were garbage collected. In
2163 such a case, we don't actually need to build a procedure
2164 linkage table, and we can just do a PC32 reloc instead. */
70256ad8 2165 h->plt.offset = (bfd_vma) -1;
f5385ebf 2166 h->needs_plt = 0;
70256ad8
AJ
2167 }
2168
b34976b6 2169 return TRUE;
70256ad8 2170 }
bbd7ec4a 2171 else
c434dee6
AJ
2172 /* It's possible that we incorrectly decided a .plt reloc was
2173 needed for an R_X86_64_PC32 reloc to a non-function sym in
2174 check_relocs. We can't decide accurately between function and
2175 non-function syms in check-relocs; Objects loaded later in
2176 the link may change h->type. So fix it now. */
bbd7ec4a 2177 h->plt.offset = (bfd_vma) -1;
70256ad8
AJ
2178
2179 /* If this is a weak symbol, and there is a real definition, the
2180 processor independent code will have arranged for us to see the
407443a3 2181 real definition first, and we can just use the same value. */
f6e332e6 2182 if (h->u.weakdef != NULL)
70256ad8 2183 {
f6e332e6
AM
2184 BFD_ASSERT (h->u.weakdef->root.type == bfd_link_hash_defined
2185 || h->u.weakdef->root.type == bfd_link_hash_defweak);
2186 h->root.u.def.section = h->u.weakdef->root.u.def.section;
2187 h->root.u.def.value = h->u.weakdef->root.u.def.value;
d40d037c 2188 if (ELIMINATE_COPY_RELOCS || info->nocopyreloc)
f6e332e6 2189 h->non_got_ref = h->u.weakdef->non_got_ref;
b34976b6 2190 return TRUE;
70256ad8
AJ
2191 }
2192
2193 /* This is a reference to a symbol defined by a dynamic object which
407443a3 2194 is not a function. */
70256ad8
AJ
2195
2196 /* If we are creating a shared library, we must presume that the
2197 only references to the symbol are via the global offset table.
2198 For such cases we need not do anything here; the relocations will
407443a3 2199 be handled correctly by relocate_section. */
70256ad8 2200 if (info->shared)
b34976b6 2201 return TRUE;
70256ad8
AJ
2202
2203 /* If there are no references to this symbol that do not use the
2204 GOT, we don't need to generate a copy reloc. */
f5385ebf 2205 if (!h->non_got_ref)
b34976b6 2206 return TRUE;
70256ad8 2207
c434dee6
AJ
2208 /* If -z nocopyreloc was given, we won't generate them either. */
2209 if (info->nocopyreloc)
2210 {
f5385ebf 2211 h->non_got_ref = 0;
b34976b6 2212 return TRUE;
c434dee6
AJ
2213 }
2214
d40d037c 2215 if (ELIMINATE_COPY_RELOCS)
c434dee6 2216 {
351f65ca 2217 struct elf_x86_64_link_hash_entry * eh;
e03a8ed8 2218 struct elf_dyn_relocs *p;
c434dee6 2219
351f65ca 2220 eh = (struct elf_x86_64_link_hash_entry *) h;
d40d037c
AJ
2221 for (p = eh->dyn_relocs; p != NULL; p = p->next)
2222 {
2223 s = p->sec->output_section;
2224 if (s != NULL && (s->flags & SEC_READONLY) != 0)
2225 break;
2226 }
2227
2228 /* If we didn't find any dynamic relocs in read-only sections, then
2229 we'll be keeping the dynamic relocs and avoiding the copy reloc. */
2230 if (p == NULL)
2231 {
f5385ebf 2232 h->non_got_ref = 0;
d40d037c
AJ
2233 return TRUE;
2234 }
c434dee6
AJ
2235 }
2236
70256ad8 2237 /* We must allocate the symbol in our .dynbss section, which will
407443a3 2238 become part of the .bss section of the executable. There will be
70256ad8
AJ
2239 an entry for this symbol in the .dynsym section. The dynamic
2240 object will contain position independent code, so all references
2241 from the dynamic object to this symbol will go through the global
2242 offset table. The dynamic linker will use the .dynsym entry to
2243 determine the address it must put in the global offset table, so
2244 both the dynamic object and the regular object will refer to the
2245 same memory location for the variable. */
2246
351f65ca 2247 htab = elf_x86_64_hash_table (info);
4dfe6ac6
NC
2248 if (htab == NULL)
2249 return FALSE;
70256ad8
AJ
2250
2251 /* We must generate a R_X86_64_COPY reloc to tell the dynamic linker
2252 to copy the initial value out of the dynamic object and into the
cedb70c5 2253 runtime process image. */
1d7e9d18 2254 if ((h->root.u.def.section->flags & SEC_ALLOC) != 0 && h->size != 0)
70256ad8 2255 {
351f65ca
L
2256 const struct elf_backend_data *bed;
2257 bed = get_elf_backend_data (info->output_bfd);
2258 htab->srelbss->size += bed->s->sizeof_rela;
f5385ebf 2259 h->needs_copy = 1;
70256ad8
AJ
2260 }
2261
c434dee6 2262 s = htab->sdynbss;
70256ad8 2263
027297b7 2264 return _bfd_elf_adjust_dynamic_copy (h, s);
70256ad8
AJ
2265}
2266
c434dee6
AJ
2267/* Allocate space in .plt, .got and associated reloc sections for
2268 dynamic relocs. */
2269
b34976b6 2270static bfd_boolean
351f65ca 2271elf_x86_64_allocate_dynrelocs (struct elf_link_hash_entry *h, void * inf)
c434dee6
AJ
2272{
2273 struct bfd_link_info *info;
351f65ca
L
2274 struct elf_x86_64_link_hash_table *htab;
2275 struct elf_x86_64_link_hash_entry *eh;
e03a8ed8 2276 struct elf_dyn_relocs *p;
351f65ca 2277 const struct elf_backend_data *bed;
eed180f8 2278 unsigned int plt_entry_size;
c434dee6 2279
e92d460e 2280 if (h->root.type == bfd_link_hash_indirect)
b34976b6 2281 return TRUE;
c434dee6 2282
351f65ca 2283 eh = (struct elf_x86_64_link_hash_entry *) h;
e92d460e 2284
c434dee6 2285 info = (struct bfd_link_info *) inf;
351f65ca 2286 htab = elf_x86_64_hash_table (info);
4dfe6ac6
NC
2287 if (htab == NULL)
2288 return FALSE;
351f65ca 2289 bed = get_elf_backend_data (info->output_bfd);
eed180f8 2290 plt_entry_size = GET_PLT_ENTRY_SIZE (info->output_bfd);
c434dee6 2291
cbe950e9
L
2292 /* Since STT_GNU_IFUNC symbol must go through PLT, we handle it
2293 here if it is defined and referenced in a non-shared object. */
2294 if (h->type == STT_GNU_IFUNC
2295 && h->def_regular)
e03a8ed8
L
2296 return _bfd_elf_allocate_ifunc_dyn_relocs (info, h,
2297 &eh->dyn_relocs,
eed180f8 2298 plt_entry_size,
e03a8ed8 2299 GOT_ENTRY_SIZE);
cbe950e9
L
2300 else if (htab->elf.dynamic_sections_created
2301 && h->plt.refcount > 0)
c434dee6
AJ
2302 {
2303 /* Make sure this symbol is output as a dynamic symbol.
2304 Undefined weak syms won't yet be marked as dynamic. */
2305 if (h->dynindx == -1
f5385ebf 2306 && !h->forced_local)
c434dee6 2307 {
c152c796 2308 if (! bfd_elf_link_record_dynamic_symbol (info, h))
b34976b6 2309 return FALSE;
c434dee6
AJ
2310 }
2311
27482721
AJ
2312 if (info->shared
2313 || WILL_CALL_FINISH_DYNAMIC_SYMBOL (1, 0, h))
c434dee6 2314 {
6de2ae4a 2315 asection *s = htab->elf.splt;
c434dee6
AJ
2316
2317 /* If this is the first .plt entry, make room for the special
2318 first entry. */
eea6121a 2319 if (s->size == 0)
eed180f8 2320 s->size += plt_entry_size;
c434dee6 2321
eea6121a 2322 h->plt.offset = s->size;
c434dee6
AJ
2323
2324 /* If this symbol is not defined in a regular file, and we are
2325 not generating a shared library, then set the symbol to this
2326 location in the .plt. This is required to make function
2327 pointers compare as equal between the normal executable and
2328 the shared library. */
2329 if (! info->shared
f5385ebf 2330 && !h->def_regular)
c434dee6
AJ
2331 {
2332 h->root.u.def.section = s;
2333 h->root.u.def.value = h->plt.offset;
2334 }
2335
2336 /* Make room for this entry. */
eed180f8 2337 s->size += plt_entry_size;
c434dee6
AJ
2338
2339 /* We also need to make an entry in the .got.plt section, which
2340 will be placed in the .got section by the linker script. */
6de2ae4a 2341 htab->elf.sgotplt->size += GOT_ENTRY_SIZE;
c434dee6
AJ
2342
2343 /* We also need to make an entry in the .rela.plt section. */
351f65ca 2344 htab->elf.srelplt->size += bed->s->sizeof_rela;
6de2ae4a 2345 htab->elf.srelplt->reloc_count++;
c434dee6
AJ
2346 }
2347 else
2348 {
2349 h->plt.offset = (bfd_vma) -1;
f5385ebf 2350 h->needs_plt = 0;
c434dee6
AJ
2351 }
2352 }
2353 else
2354 {
2355 h->plt.offset = (bfd_vma) -1;
f5385ebf 2356 h->needs_plt = 0;
c434dee6
AJ
2357 }
2358
67a4f2b7
AO
2359 eh->tlsdesc_got = (bfd_vma) -1;
2360
bffbf940
JJ
2361 /* If R_X86_64_GOTTPOFF symbol is now local to the binary,
2362 make it a R_X86_64_TPOFF32 requiring no GOT entry. */
2363 if (h->got.refcount > 0
1d85728f 2364 && info->executable
bffbf940 2365 && h->dynindx == -1
351f65ca 2366 && elf_x86_64_hash_entry (h)->tls_type == GOT_TLS_IE)
d8045f23
NC
2367 {
2368 h->got.offset = (bfd_vma) -1;
2369 }
bffbf940 2370 else if (h->got.refcount > 0)
c434dee6
AJ
2371 {
2372 asection *s;
b34976b6 2373 bfd_boolean dyn;
351f65ca 2374 int tls_type = elf_x86_64_hash_entry (h)->tls_type;
c434dee6
AJ
2375
2376 /* Make sure this symbol is output as a dynamic symbol.
2377 Undefined weak syms won't yet be marked as dynamic. */
2378 if (h->dynindx == -1
f5385ebf 2379 && !h->forced_local)
c434dee6 2380 {
c152c796 2381 if (! bfd_elf_link_record_dynamic_symbol (info, h))
b34976b6 2382 return FALSE;
c434dee6
AJ
2383 }
2384
67a4f2b7
AO
2385 if (GOT_TLS_GDESC_P (tls_type))
2386 {
6de2ae4a 2387 eh->tlsdesc_got = htab->elf.sgotplt->size
351f65ca 2388 - elf_x86_64_compute_jump_table_size (htab);
6de2ae4a 2389 htab->elf.sgotplt->size += 2 * GOT_ENTRY_SIZE;
67a4f2b7
AO
2390 h->got.offset = (bfd_vma) -2;
2391 }
2392 if (! GOT_TLS_GDESC_P (tls_type)
2393 || GOT_TLS_GD_P (tls_type))
2394 {
6de2ae4a 2395 s = htab->elf.sgot;
67a4f2b7
AO
2396 h->got.offset = s->size;
2397 s->size += GOT_ENTRY_SIZE;
2398 if (GOT_TLS_GD_P (tls_type))
2399 s->size += GOT_ENTRY_SIZE;
2400 }
c434dee6 2401 dyn = htab->elf.dynamic_sections_created;
bffbf940
JJ
2402 /* R_X86_64_TLSGD needs one dynamic relocation if local symbol
2403 and two if global.
2404 R_X86_64_GOTTPOFF needs one dynamic relocation. */
67a4f2b7 2405 if ((GOT_TLS_GD_P (tls_type) && h->dynindx == -1)
bffbf940 2406 || tls_type == GOT_TLS_IE)
351f65ca 2407 htab->elf.srelgot->size += bed->s->sizeof_rela;
67a4f2b7 2408 else if (GOT_TLS_GD_P (tls_type))
351f65ca 2409 htab->elf.srelgot->size += 2 * bed->s->sizeof_rela;
67a4f2b7
AO
2410 else if (! GOT_TLS_GDESC_P (tls_type)
2411 && (ELF_ST_VISIBILITY (h->other) == STV_DEFAULT
2412 || h->root.type != bfd_link_hash_undefweak)
27482721
AJ
2413 && (info->shared
2414 || WILL_CALL_FINISH_DYNAMIC_SYMBOL (dyn, 0, h)))
351f65ca 2415 htab->elf.srelgot->size += bed->s->sizeof_rela;
67a4f2b7
AO
2416 if (GOT_TLS_GDESC_P (tls_type))
2417 {
351f65ca 2418 htab->elf.srelplt->size += bed->s->sizeof_rela;
67a4f2b7
AO
2419 htab->tlsdesc_plt = (bfd_vma) -1;
2420 }
c434dee6
AJ
2421 }
2422 else
2423 h->got.offset = (bfd_vma) -1;
2424
c434dee6 2425 if (eh->dyn_relocs == NULL)
b34976b6 2426 return TRUE;
c434dee6
AJ
2427
2428 /* In the shared -Bsymbolic case, discard space allocated for
2429 dynamic pc-relative relocs against symbols which turn out to be
2430 defined in regular objects. For the normal shared case, discard
2431 space for pc-relative relocs that have become local due to symbol
2432 visibility changes. */
2433
2434 if (info->shared)
2435 {
27482721
AJ
2436 /* Relocs that use pc_count are those that appear on a call
2437 insn, or certain REL relocs that can generated via assembly.
2438 We want calls to protected symbols to resolve directly to the
2439 function rather than going via the plt. If people want
2440 function pointer comparisons to work as expected then they
2441 should avoid writing weird assembly. */
2442 if (SYMBOL_CALLS_LOCAL (info, h))
c434dee6 2443 {
e03a8ed8 2444 struct elf_dyn_relocs **pp;
c434dee6
AJ
2445
2446 for (pp = &eh->dyn_relocs; (p = *pp) != NULL; )
2447 {
2448 p->count -= p->pc_count;
2449 p->pc_count = 0;
2450 if (p->count == 0)
2451 *pp = p->next;
2452 else
2453 pp = &p->next;
2454 }
2455 }
4e795f50
AM
2456
2457 /* Also discard relocs on undefined weak syms with non-default
2458 visibility. */
22d606e9 2459 if (eh->dyn_relocs != NULL
4e795f50 2460 && h->root.type == bfd_link_hash_undefweak)
22d606e9
AM
2461 {
2462 if (ELF_ST_VISIBILITY (h->other) != STV_DEFAULT)
2463 eh->dyn_relocs = NULL;
2464
2465 /* Make sure undefined weak symbols are output as a dynamic
2466 symbol in PIEs. */
2467 else if (h->dynindx == -1
d8045f23
NC
2468 && ! h->forced_local
2469 && ! bfd_elf_link_record_dynamic_symbol (info, h))
2470 return FALSE;
22d606e9 2471 }
cbe950e9 2472
d8045f23 2473 }
d40d037c 2474 else if (ELIMINATE_COPY_RELOCS)
c434dee6
AJ
2475 {
2476 /* For the non-shared case, discard space for relocs against
2477 symbols which turn out to need copy relocs or are not
2478 dynamic. */
2479
f5385ebf
AM
2480 if (!h->non_got_ref
2481 && ((h->def_dynamic
2482 && !h->def_regular)
c434dee6
AJ
2483 || (htab->elf.dynamic_sections_created
2484 && (h->root.type == bfd_link_hash_undefweak
2485 || h->root.type == bfd_link_hash_undefined))))
2486 {
2487 /* Make sure this symbol is output as a dynamic symbol.
2488 Undefined weak syms won't yet be marked as dynamic. */
2489 if (h->dynindx == -1
d8045f23
NC
2490 && ! h->forced_local
2491 && ! bfd_elf_link_record_dynamic_symbol (info, h))
2492 return FALSE;
c434dee6
AJ
2493
2494 /* If that succeeded, we know we'll be keeping all the
2495 relocs. */
2496 if (h->dynindx != -1)
2497 goto keep;
2498 }
2499
2500 eh->dyn_relocs = NULL;
2501
2502 keep: ;
2503 }
2504
2505 /* Finally, allocate space. */
2506 for (p = eh->dyn_relocs; p != NULL; p = p->next)
2507 {
e7c33416
NC
2508 asection * sreloc;
2509
cbe950e9 2510 sreloc = elf_section_data (p->sec)->sreloc;
e7c33416
NC
2511
2512 BFD_ASSERT (sreloc != NULL);
2513
351f65ca 2514 sreloc->size += p->count * bed->s->sizeof_rela;
c434dee6
AJ
2515 }
2516
b34976b6 2517 return TRUE;
c434dee6
AJ
2518}
2519
c25bc9fc
L
2520/* Allocate space in .plt, .got and associated reloc sections for
2521 local dynamic relocs. */
2522
2523static bfd_boolean
351f65ca 2524elf_x86_64_allocate_local_dynrelocs (void **slot, void *inf)
c25bc9fc
L
2525{
2526 struct elf_link_hash_entry *h
2527 = (struct elf_link_hash_entry *) *slot;
2528
2529 if (h->type != STT_GNU_IFUNC
2530 || !h->def_regular
2531 || !h->ref_regular
2532 || !h->forced_local
2533 || h->root.type != bfd_link_hash_defined)
2534 abort ();
2535
351f65ca 2536 return elf_x86_64_allocate_dynrelocs (h, inf);
c25bc9fc
L
2537}
2538
c434dee6
AJ
2539/* Find any dynamic relocs that apply to read-only sections. */
2540
b34976b6 2541static bfd_boolean
351f65ca
L
2542elf_x86_64_readonly_dynrelocs (struct elf_link_hash_entry *h,
2543 void * inf)
c434dee6 2544{
351f65ca 2545 struct elf_x86_64_link_hash_entry *eh;
e03a8ed8 2546 struct elf_dyn_relocs *p;
c434dee6 2547
aa715242
L
2548 /* Skip local IFUNC symbols. */
2549 if (h->forced_local && h->type == STT_GNU_IFUNC)
2550 return TRUE;
2551
351f65ca 2552 eh = (struct elf_x86_64_link_hash_entry *) h;
c434dee6
AJ
2553 for (p = eh->dyn_relocs; p != NULL; p = p->next)
2554 {
2555 asection *s = p->sec->output_section;
2556
2557 if (s != NULL && (s->flags & SEC_READONLY) != 0)
2558 {
2559 struct bfd_link_info *info = (struct bfd_link_info *) inf;
2560
2561 info->flags |= DF_TEXTREL;
2562
b70321a2
L
2563 if (info->warn_shared_textrel && info->shared)
2564 info->callbacks->einfo (_("%P: %B: warning: relocation against `%s' in readonly section `%A'.\n"),
2565 p->sec->owner, h->root.root.string,
2566 p->sec);
2567
c434dee6 2568 /* Not an error, just cut short the traversal. */
b34976b6 2569 return FALSE;
c434dee6
AJ
2570 }
2571 }
b34976b6 2572 return TRUE;
c434dee6
AJ
2573}
2574
70256ad8
AJ
2575/* Set the sizes of the dynamic sections. */
2576
b34976b6 2577static bfd_boolean
351f65ca
L
2578elf_x86_64_size_dynamic_sections (bfd *output_bfd,
2579 struct bfd_link_info *info)
70256ad8 2580{
351f65ca 2581 struct elf_x86_64_link_hash_table *htab;
70256ad8
AJ
2582 bfd *dynobj;
2583 asection *s;
b34976b6 2584 bfd_boolean relocs;
c434dee6 2585 bfd *ibfd;
351f65ca 2586 const struct elf_backend_data *bed;
70256ad8 2587
351f65ca 2588 htab = elf_x86_64_hash_table (info);
4dfe6ac6
NC
2589 if (htab == NULL)
2590 return FALSE;
351f65ca 2591 bed = get_elf_backend_data (output_bfd);
4dfe6ac6 2592
c434dee6
AJ
2593 dynobj = htab->elf.dynobj;
2594 if (dynobj == NULL)
2595 abort ();
70256ad8 2596
c434dee6 2597 if (htab->elf.dynamic_sections_created)
70256ad8
AJ
2598 {
2599 /* Set the contents of the .interp section to the interpreter. */
36af4a4e 2600 if (info->executable)
70256ad8 2601 {
3d4d4302 2602 s = bfd_get_linker_section (dynobj, ".interp");
c434dee6
AJ
2603 if (s == NULL)
2604 abort ();
351f65ca
L
2605 s->size = htab->dynamic_interpreter_size;
2606 s->contents = (unsigned char *) htab->dynamic_interpreter;
70256ad8
AJ
2607 }
2608 }
70256ad8 2609
c434dee6
AJ
2610 /* Set up .got offsets for local syms, and space for local dynamic
2611 relocs. */
2612 for (ibfd = info->input_bfds; ibfd != NULL; ibfd = ibfd->link_next)
70256ad8 2613 {
c434dee6
AJ
2614 bfd_signed_vma *local_got;
2615 bfd_signed_vma *end_local_got;
bffbf940 2616 char *local_tls_type;
67a4f2b7 2617 bfd_vma *local_tlsdesc_gotent;
c434dee6
AJ
2618 bfd_size_type locsymcount;
2619 Elf_Internal_Shdr *symtab_hdr;
2620 asection *srel;
70256ad8 2621
0ffa91dd 2622 if (! is_x86_64_elf (ibfd))
70256ad8
AJ
2623 continue;
2624
c434dee6 2625 for (s = ibfd->sections; s != NULL; s = s->next)
70256ad8 2626 {
e03a8ed8 2627 struct elf_dyn_relocs *p;
c434dee6 2628
e03a8ed8 2629 for (p = (struct elf_dyn_relocs *)
e81d3500 2630 (elf_section_data (s)->local_dynrel);
c434dee6
AJ
2631 p != NULL;
2632 p = p->next)
70256ad8 2633 {
c434dee6
AJ
2634 if (!bfd_is_abs_section (p->sec)
2635 && bfd_is_abs_section (p->sec->output_section))
2636 {
2637 /* Input section has been discarded, either because
2638 it is a copy of a linkonce section or due to
2639 linker script /DISCARD/, so we'll be discarding
2640 the relocs too. */
2641 }
2642 else if (p->count != 0)
2643 {
2644 srel = elf_section_data (p->sec)->sreloc;
351f65ca 2645 srel->size += p->count * bed->s->sizeof_rela;
4b819e1f
L
2646 if ((p->sec->output_section->flags & SEC_READONLY) != 0
2647 && (info->flags & DF_TEXTREL) == 0)
b70321a2
L
2648 {
2649 info->flags |= DF_TEXTREL;
2650 if (info->warn_shared_textrel && info->shared)
2651 info->callbacks->einfo (_("%P: %B: warning: relocation in readonly section `%A'.\n"),
2652 p->sec->owner, p->sec);
b70321a2 2653 }
c434dee6 2654 }
70256ad8
AJ
2655 }
2656 }
c434dee6
AJ
2657
2658 local_got = elf_local_got_refcounts (ibfd);
2659 if (!local_got)
2660 continue;
2661
0ffa91dd 2662 symtab_hdr = &elf_symtab_hdr (ibfd);
c434dee6
AJ
2663 locsymcount = symtab_hdr->sh_info;
2664 end_local_got = local_got + locsymcount;
351f65ca
L
2665 local_tls_type = elf_x86_64_local_got_tls_type (ibfd);
2666 local_tlsdesc_gotent = elf_x86_64_local_tlsdesc_gotent (ibfd);
6de2ae4a
L
2667 s = htab->elf.sgot;
2668 srel = htab->elf.srelgot;
67a4f2b7
AO
2669 for (; local_got < end_local_got;
2670 ++local_got, ++local_tls_type, ++local_tlsdesc_gotent)
70256ad8 2671 {
67a4f2b7 2672 *local_tlsdesc_gotent = (bfd_vma) -1;
c434dee6 2673 if (*local_got > 0)
70256ad8 2674 {
67a4f2b7
AO
2675 if (GOT_TLS_GDESC_P (*local_tls_type))
2676 {
6de2ae4a 2677 *local_tlsdesc_gotent = htab->elf.sgotplt->size
351f65ca 2678 - elf_x86_64_compute_jump_table_size (htab);
6de2ae4a 2679 htab->elf.sgotplt->size += 2 * GOT_ENTRY_SIZE;
67a4f2b7
AO
2680 *local_got = (bfd_vma) -2;
2681 }
2682 if (! GOT_TLS_GDESC_P (*local_tls_type)
2683 || GOT_TLS_GD_P (*local_tls_type))
2684 {
2685 *local_got = s->size;
2686 s->size += GOT_ENTRY_SIZE;
2687 if (GOT_TLS_GD_P (*local_tls_type))
2688 s->size += GOT_ENTRY_SIZE;
2689 }
bffbf940 2690 if (info->shared
67a4f2b7 2691 || GOT_TLS_GD_ANY_P (*local_tls_type)
bffbf940 2692 || *local_tls_type == GOT_TLS_IE)
67a4f2b7
AO
2693 {
2694 if (GOT_TLS_GDESC_P (*local_tls_type))
2695 {
6de2ae4a 2696 htab->elf.srelplt->size
351f65ca 2697 += bed->s->sizeof_rela;
67a4f2b7
AO
2698 htab->tlsdesc_plt = (bfd_vma) -1;
2699 }
2700 if (! GOT_TLS_GDESC_P (*local_tls_type)
2701 || GOT_TLS_GD_P (*local_tls_type))
351f65ca 2702 srel->size += bed->s->sizeof_rela;
67a4f2b7 2703 }
70256ad8
AJ
2704 }
2705 else
c434dee6
AJ
2706 *local_got = (bfd_vma) -1;
2707 }
2708 }
70256ad8 2709
bffbf940
JJ
2710 if (htab->tls_ld_got.refcount > 0)
2711 {
2712 /* Allocate 2 got entries and 1 dynamic reloc for R_X86_64_TLSLD
2713 relocs. */
6de2ae4a
L
2714 htab->tls_ld_got.offset = htab->elf.sgot->size;
2715 htab->elf.sgot->size += 2 * GOT_ENTRY_SIZE;
351f65ca 2716 htab->elf.srelgot->size += bed->s->sizeof_rela;
bffbf940
JJ
2717 }
2718 else
2719 htab->tls_ld_got.offset = -1;
2720
c434dee6
AJ
2721 /* Allocate global sym .plt and .got entries, and space for global
2722 sym dynamic relocs. */
351f65ca 2723 elf_link_hash_traverse (&htab->elf, elf_x86_64_allocate_dynrelocs,
eb4ff4d6 2724 info);
c434dee6 2725
c25bc9fc
L
2726 /* Allocate .plt and .got entries, and space for local symbols. */
2727 htab_traverse (htab->loc_hash_table,
351f65ca 2728 elf_x86_64_allocate_local_dynrelocs,
c25bc9fc
L
2729 info);
2730
67a4f2b7
AO
2731 /* For every jump slot reserved in the sgotplt, reloc_count is
2732 incremented. However, when we reserve space for TLS descriptors,
2733 it's not incremented, so in order to compute the space reserved
2734 for them, it suffices to multiply the reloc count by the jump
e1f98742
L
2735 slot size.
2736
2737 PR ld/13302: We start next_irelative_index at the end of .rela.plt
2738 so that R_X86_64_IRELATIVE entries come last. */
6de2ae4a 2739 if (htab->elf.srelplt)
e1f98742
L
2740 {
2741 htab->sgotplt_jump_table_size
2742 = elf_x86_64_compute_jump_table_size (htab);
2743 htab->next_irelative_index = htab->elf.srelplt->reloc_count - 1;
2744 }
2745 else if (htab->elf.irelplt)
2746 htab->next_irelative_index = htab->elf.irelplt->reloc_count - 1;
67a4f2b7
AO
2747
2748 if (htab->tlsdesc_plt)
2749 {
2750 /* If we're not using lazy TLS relocations, don't generate the
2751 PLT and GOT entries they require. */
2752 if ((info->flags & DF_BIND_NOW))
2753 htab->tlsdesc_plt = 0;
2754 else
2755 {
6de2ae4a
L
2756 htab->tlsdesc_got = htab->elf.sgot->size;
2757 htab->elf.sgot->size += GOT_ENTRY_SIZE;
67a4f2b7
AO
2758 /* Reserve room for the initial entry.
2759 FIXME: we could probably do away with it in this case. */
6de2ae4a 2760 if (htab->elf.splt->size == 0)
eed180f8 2761 htab->elf.splt->size += GET_PLT_ENTRY_SIZE (output_bfd);
6de2ae4a 2762 htab->tlsdesc_plt = htab->elf.splt->size;
eed180f8 2763 htab->elf.splt->size += GET_PLT_ENTRY_SIZE (output_bfd);
67a4f2b7
AO
2764 }
2765 }
2766
a7b16ceb
L
2767 if (htab->elf.sgotplt)
2768 {
e28df02b
L
2769 struct elf_link_hash_entry *got;
2770 got = elf_link_hash_lookup (elf_hash_table (info),
2771 "_GLOBAL_OFFSET_TABLE_",
2772 FALSE, FALSE, FALSE);
2773
a7b16ceb 2774 /* Don't allocate .got.plt section if there are no GOT nor PLT
eed180f8 2775 entries and there is no refeence to _GLOBAL_OFFSET_TABLE_. */
e28df02b
L
2776 if ((got == NULL
2777 || !got->ref_regular_nonweak)
2778 && (htab->elf.sgotplt->size
2779 == get_elf_backend_data (output_bfd)->got_header_size)
a7b16ceb
L
2780 && (htab->elf.splt == NULL
2781 || htab->elf.splt->size == 0)
2782 && (htab->elf.sgot == NULL
2783 || htab->elf.sgot->size == 0)
2784 && (htab->elf.iplt == NULL
2785 || htab->elf.iplt->size == 0)
2786 && (htab->elf.igotplt == NULL
2787 || htab->elf.igotplt->size == 0))
2788 htab->elf.sgotplt->size = 0;
2789 }
2790
9a2a56cc
AM
2791 if (htab->plt_eh_frame != NULL
2792 && htab->elf.splt != NULL
2793 && htab->elf.splt->size != 0
2794 && !bfd_is_abs_section (htab->elf.splt->output_section)
2795 && _bfd_elf_eh_frame_present (info))
2796 {
2797 const struct elf_x86_64_backend_data *arch_data
2798 = (const struct elf_x86_64_backend_data *) bed->arch_data;
2799 htab->plt_eh_frame->size = arch_data->eh_frame_plt_size;
2800 }
2801
c434dee6
AJ
2802 /* We now have determined the sizes of the various dynamic sections.
2803 Allocate memory for them. */
b34976b6 2804 relocs = FALSE;
c434dee6
AJ
2805 for (s = dynobj->sections; s != NULL; s = s->next)
2806 {
2807 if ((s->flags & SEC_LINKER_CREATED) == 0)
2808 continue;
2809
6de2ae4a
L
2810 if (s == htab->elf.splt
2811 || s == htab->elf.sgot
2812 || s == htab->elf.sgotplt
2813 || s == htab->elf.iplt
2814 || s == htab->elf.igotplt
9a2a56cc 2815 || s == htab->plt_eh_frame
75ff4589 2816 || s == htab->sdynbss)
c434dee6
AJ
2817 {
2818 /* Strip this section if we don't need it; see the
2819 comment below. */
2820 }
0112cd26 2821 else if (CONST_STRNEQ (bfd_get_section_name (dynobj, s), ".rela"))
c434dee6 2822 {
6de2ae4a 2823 if (s->size != 0 && s != htab->elf.srelplt)
b34976b6 2824 relocs = TRUE;
c434dee6
AJ
2825
2826 /* We use the reloc_count field as a counter if we need
2827 to copy relocs into the output file. */
6de2ae4a 2828 if (s != htab->elf.srelplt)
67a4f2b7 2829 s->reloc_count = 0;
70256ad8 2830 }
c434dee6 2831 else
70256ad8
AJ
2832 {
2833 /* It's not one of our sections, so don't allocate space. */
2834 continue;
2835 }
2836
eea6121a 2837 if (s->size == 0)
70256ad8 2838 {
c434dee6
AJ
2839 /* If we don't need this section, strip it from the
2840 output file. This is mostly to handle .rela.bss and
2841 .rela.plt. We must create both sections in
2842 create_dynamic_sections, because they must be created
2843 before the linker maps input sections to output
2844 sections. The linker does that before
2845 adjust_dynamic_symbol is called, and it is that
2846 function which decides whether anything needs to go
2847 into these sections. */
2848
8423293d 2849 s->flags |= SEC_EXCLUDE;
70256ad8
AJ
2850 continue;
2851 }
2852
c456f082
AM
2853 if ((s->flags & SEC_HAS_CONTENTS) == 0)
2854 continue;
2855
70256ad8
AJ
2856 /* Allocate memory for the section contents. We use bfd_zalloc
2857 here in case unused entries are not reclaimed before the
2858 section's contents are written out. This should not happen,
2859 but this way if it does, we get a R_X86_64_NONE reloc instead
2860 of garbage. */
eea6121a 2861 s->contents = (bfd_byte *) bfd_zalloc (dynobj, s->size);
c434dee6 2862 if (s->contents == NULL)
b34976b6 2863 return FALSE;
70256ad8
AJ
2864 }
2865
e41b3a13 2866 if (htab->plt_eh_frame != NULL
9a2a56cc
AM
2867 && htab->plt_eh_frame->contents != NULL)
2868 {
2869 const struct elf_x86_64_backend_data *arch_data
2870 = (const struct elf_x86_64_backend_data *) bed->arch_data;
2871
2872 memcpy (htab->plt_eh_frame->contents,
2873 arch_data->eh_frame_plt, htab->plt_eh_frame->size);
2874 bfd_put_32 (dynobj, htab->elf.splt->size,
2875 htab->plt_eh_frame->contents + PLT_FDE_LEN_OFFSET);
2876 }
e41b3a13 2877
c434dee6 2878 if (htab->elf.dynamic_sections_created)
70256ad8
AJ
2879 {
2880 /* Add some entries to the .dynamic section. We fill in the
351f65ca 2881 values later, in elf_x86_64_finish_dynamic_sections, but we
70256ad8 2882 must add the entries now so that we get the correct size for
407443a3 2883 the .dynamic section. The DT_DEBUG entry is filled in by the
70256ad8 2884 dynamic linker and used by the debugger. */
dc810e39 2885#define add_dynamic_entry(TAG, VAL) \
5a580b3a 2886 _bfd_elf_add_dynamic_entry (info, TAG, VAL)
dc810e39 2887
36af4a4e 2888 if (info->executable)
70256ad8 2889 {
dc810e39 2890 if (!add_dynamic_entry (DT_DEBUG, 0))
b34976b6 2891 return FALSE;
70256ad8
AJ
2892 }
2893
6de2ae4a 2894 if (htab->elf.splt->size != 0)
70256ad8 2895 {
dc810e39
AM
2896 if (!add_dynamic_entry (DT_PLTGOT, 0)
2897 || !add_dynamic_entry (DT_PLTRELSZ, 0)
2898 || !add_dynamic_entry (DT_PLTREL, DT_RELA)
2899 || !add_dynamic_entry (DT_JMPREL, 0))
b34976b6 2900 return FALSE;
67a4f2b7
AO
2901
2902 if (htab->tlsdesc_plt
2903 && (!add_dynamic_entry (DT_TLSDESC_PLT, 0)
2904 || !add_dynamic_entry (DT_TLSDESC_GOT, 0)))
2905 return FALSE;
70256ad8
AJ
2906 }
2907
2908 if (relocs)
2909 {
dc810e39
AM
2910 if (!add_dynamic_entry (DT_RELA, 0)
2911 || !add_dynamic_entry (DT_RELASZ, 0)
351f65ca 2912 || !add_dynamic_entry (DT_RELAENT, bed->s->sizeof_rela))
b34976b6 2913 return FALSE;
70256ad8 2914
c434dee6
AJ
2915 /* If any dynamic relocs apply to a read-only section,
2916 then we need a DT_TEXTREL entry. */
2917 if ((info->flags & DF_TEXTREL) == 0)
eed180f8 2918 elf_link_hash_traverse (&htab->elf,
351f65ca 2919 elf_x86_64_readonly_dynrelocs,
eb4ff4d6 2920 info);
c434dee6
AJ
2921
2922 if ((info->flags & DF_TEXTREL) != 0)
2923 {
2924 if (!add_dynamic_entry (DT_TEXTREL, 0))
b34976b6 2925 return FALSE;
c434dee6 2926 }
70256ad8
AJ
2927 }
2928 }
dc810e39 2929#undef add_dynamic_entry
70256ad8 2930
b34976b6 2931 return TRUE;
70256ad8
AJ
2932}
2933
67a4f2b7 2934static bfd_boolean
351f65ca
L
2935elf_x86_64_always_size_sections (bfd *output_bfd,
2936 struct bfd_link_info *info)
67a4f2b7
AO
2937{
2938 asection *tls_sec = elf_hash_table (info)->tls_sec;
2939
2940 if (tls_sec)
2941 {
2942 struct elf_link_hash_entry *tlsbase;
2943
2944 tlsbase = elf_link_hash_lookup (elf_hash_table (info),
2945 "_TLS_MODULE_BASE_",
2946 FALSE, FALSE, FALSE);
2947
2948 if (tlsbase && tlsbase->type == STT_TLS)
2949 {
351f65ca 2950 struct elf_x86_64_link_hash_table *htab;
67a4f2b7
AO
2951 struct bfd_link_hash_entry *bh = NULL;
2952 const struct elf_backend_data *bed
2953 = get_elf_backend_data (output_bfd);
2954
351f65ca 2955 htab = elf_x86_64_hash_table (info);
4dfe6ac6
NC
2956 if (htab == NULL)
2957 return FALSE;
2958
67a4f2b7
AO
2959 if (!(_bfd_generic_link_add_one_symbol
2960 (info, output_bfd, "_TLS_MODULE_BASE_", BSF_LOCAL,
2961 tls_sec, 0, NULL, FALSE,
2962 bed->collect, &bh)))
2963 return FALSE;
9f03412a 2964
4dfe6ac6 2965 htab->tls_module_base = bh;
9f03412a 2966
67a4f2b7
AO
2967 tlsbase = (struct elf_link_hash_entry *)bh;
2968 tlsbase->def_regular = 1;
2969 tlsbase->other = STV_HIDDEN;
2970 (*bed->elf_backend_hide_symbol) (info, tlsbase, TRUE);
2971 }
2972 }
2973
2974 return TRUE;
2975}
2976
9f03412a
AO
2977/* _TLS_MODULE_BASE_ needs to be treated especially when linking
2978 executables. Rather than setting it to the beginning of the TLS
2979 section, we have to set it to the end. This function may be called
2980 multiple times, it is idempotent. */
2981
2982static void
351f65ca 2983elf_x86_64_set_tls_module_base (struct bfd_link_info *info)
9f03412a 2984{
351f65ca 2985 struct elf_x86_64_link_hash_table *htab;
9f03412a
AO
2986 struct bfd_link_hash_entry *base;
2987
2988 if (!info->executable)
2989 return;
2990
351f65ca 2991 htab = elf_x86_64_hash_table (info);
4dfe6ac6
NC
2992 if (htab == NULL)
2993 return;
9f03412a 2994
4dfe6ac6
NC
2995 base = htab->tls_module_base;
2996 if (base == NULL)
9f03412a
AO
2997 return;
2998
4dfe6ac6 2999 base->u.def.value = htab->elf.tls_size;
9f03412a
AO
3000}
3001
bffbf940
JJ
3002/* Return the base VMA address which should be subtracted from real addresses
3003 when resolving @dtpoff relocation.
3004 This is PT_TLS segment p_vaddr. */
3005
3006static bfd_vma
351f65ca 3007elf_x86_64_dtpoff_base (struct bfd_link_info *info)
bffbf940 3008{
e1918d23
AM
3009 /* If tls_sec is NULL, we should have signalled an error already. */
3010 if (elf_hash_table (info)->tls_sec == NULL)
bffbf940 3011 return 0;
e1918d23 3012 return elf_hash_table (info)->tls_sec->vma;
bffbf940
JJ
3013}
3014
3015/* Return the relocation value for @tpoff relocation
3016 if STT_TLS virtual address is ADDRESS. */
3017
3018static bfd_vma
351f65ca 3019elf_x86_64_tpoff (struct bfd_link_info *info, bfd_vma address)
bffbf940 3020{
e1918d23 3021 struct elf_link_hash_table *htab = elf_hash_table (info);
7dc98aea
RO
3022 const struct elf_backend_data *bed = get_elf_backend_data (info->output_bfd);
3023 bfd_vma static_tls_size;
bffbf940
JJ
3024
3025 /* If tls_segment is NULL, we should have signalled an error already. */
e1918d23 3026 if (htab->tls_sec == NULL)
bffbf940 3027 return 0;
7dc98aea
RO
3028
3029 /* Consider special static TLS alignment requirements. */
3030 static_tls_size = BFD_ALIGN (htab->tls_size, bed->static_tls_alignment);
3031 return address - static_tls_size - htab->tls_sec->vma;
bffbf940
JJ
3032}
3033
90f487df
L
3034/* Is the instruction before OFFSET in CONTENTS a 32bit relative
3035 branch? */
3036
3037static bfd_boolean
3038is_32bit_relative_branch (bfd_byte *contents, bfd_vma offset)
3039{
3040 /* Opcode Instruction
3041 0xe8 call
3042 0xe9 jump
3043 0x0f 0x8x conditional jump */
3044 return ((offset > 0
3045 && (contents [offset - 1] == 0xe8
3046 || contents [offset - 1] == 0xe9))
3047 || (offset > 1
3048 && contents [offset - 2] == 0x0f
3049 && (contents [offset - 1] & 0xf0) == 0x80));
3050}
3051
8d88c4ca
NC
3052/* Relocate an x86_64 ELF section. */
3053
b34976b6 3054static bfd_boolean
351f65ca
L
3055elf_x86_64_relocate_section (bfd *output_bfd,
3056 struct bfd_link_info *info,
3057 bfd *input_bfd,
3058 asection *input_section,
3059 bfd_byte *contents,
3060 Elf_Internal_Rela *relocs,
3061 Elf_Internal_Sym *local_syms,
3062 asection **local_sections)
8d88c4ca 3063{
351f65ca 3064 struct elf_x86_64_link_hash_table *htab;
8d88c4ca
NC
3065 Elf_Internal_Shdr *symtab_hdr;
3066 struct elf_link_hash_entry **sym_hashes;
3067 bfd_vma *local_got_offsets;
67a4f2b7 3068 bfd_vma *local_tlsdesc_gotents;
c434dee6 3069 Elf_Internal_Rela *rel;
8d88c4ca 3070 Elf_Internal_Rela *relend;
eed180f8 3071 const unsigned int plt_entry_size = GET_PLT_ENTRY_SIZE (info->output_bfd);
8d88c4ca 3072
0ffa91dd
NC
3073 BFD_ASSERT (is_x86_64_elf (input_bfd));
3074
351f65ca 3075 htab = elf_x86_64_hash_table (info);
4dfe6ac6
NC
3076 if (htab == NULL)
3077 return FALSE;
0ffa91dd 3078 symtab_hdr = &elf_symtab_hdr (input_bfd);
8d88c4ca
NC
3079 sym_hashes = elf_sym_hashes (input_bfd);
3080 local_got_offsets = elf_local_got_offsets (input_bfd);
351f65ca 3081 local_tlsdesc_gotents = elf_x86_64_local_tlsdesc_gotent (input_bfd);
8d88c4ca 3082
351f65ca 3083 elf_x86_64_set_tls_module_base (info);
9f03412a 3084
c434dee6 3085 rel = relocs;
8d88c4ca 3086 relend = relocs + input_section->reloc_count;
c434dee6 3087 for (; rel < relend; rel++)
8d88c4ca 3088 {
bffbf940 3089 unsigned int r_type;
8d88c4ca
NC
3090 reloc_howto_type *howto;
3091 unsigned long r_symndx;
3092 struct elf_link_hash_entry *h;
3093 Elf_Internal_Sym *sym;
3094 asection *sec;
67a4f2b7 3095 bfd_vma off, offplt;
8d88c4ca 3096 bfd_vma relocation;
b34976b6 3097 bfd_boolean unresolved_reloc;
8d88c4ca 3098 bfd_reloc_status_type r;
bffbf940 3099 int tls_type;
cbe950e9 3100 asection *base_got;
8d88c4ca 3101
351f65ca 3102 r_type = ELF32_R_TYPE (rel->r_info);
fe4770f4
AJ
3103 if (r_type == (int) R_X86_64_GNU_VTINHERIT
3104 || r_type == (int) R_X86_64_GNU_VTENTRY)
3105 continue;
8d88c4ca 3106
bffbf940 3107 if (r_type >= R_X86_64_max)
8da6118f
KH
3108 {
3109 bfd_set_error (bfd_error_bad_value);
b34976b6 3110 return FALSE;
8da6118f 3111 }
8d88c4ca 3112
d7921315 3113 if (r_type != (int) R_X86_64_32
eed180f8 3114 || ABI_64_P (output_bfd))
d7921315
L
3115 howto = x86_64_elf_howto_table + r_type;
3116 else
3117 howto = (x86_64_elf_howto_table
3118 + ARRAY_SIZE (x86_64_elf_howto_table) - 1);
351f65ca 3119 r_symndx = htab->r_sym (rel->r_info);
8d88c4ca
NC
3120 h = NULL;
3121 sym = NULL;
3122 sec = NULL;
b34976b6 3123 unresolved_reloc = FALSE;
8d88c4ca 3124 if (r_symndx < symtab_hdr->sh_info)
8da6118f
KH
3125 {
3126 sym = local_syms + r_symndx;
3127 sec = local_sections[r_symndx];
c434dee6 3128
c25bc9fc
L
3129 relocation = _bfd_elf_rela_local_sym (output_bfd, sym,
3130 &sec, rel);
3131
3132 /* Relocate against local STT_GNU_IFUNC symbol. */
1f85278f 3133 if (!info->relocatable
351f65ca 3134 && ELF_ST_TYPE (sym->st_info) == STT_GNU_IFUNC)
c25bc9fc 3135 {
351f65ca
L
3136 h = elf_x86_64_get_local_sym_hash (htab, input_bfd,
3137 rel, FALSE);
c25bc9fc
L
3138 if (h == NULL)
3139 abort ();
3140
eed180f8 3141 /* Set STT_GNU_IFUNC symbol value. */
c25bc9fc
L
3142 h->root.u.def.value = sym->st_value;
3143 h->root.u.def.section = sec;
3144 }
8da6118f 3145 }
8d88c4ca 3146 else
8da6118f 3147 {
c9736ba0 3148 bfd_boolean warned ATTRIBUTE_UNUSED;
c434dee6 3149
b2a8e766
AM
3150 RELOC_FOR_GLOBAL_SYMBOL (info, input_bfd, input_section, rel,
3151 r_symndx, symtab_hdr, sym_hashes,
3152 h, sec, relocation,
3153 unresolved_reloc, warned);
8da6118f 3154 }
ab96bf03 3155
dbaa2011 3156 if (sec != NULL && discarded_section (sec))
0672748a 3157 RELOC_AGAINST_DISCARDED_SECTION (info, input_bfd, input_section,
545fd46b 3158 rel, 1, relend, howto, 0, contents);
ab96bf03
AM
3159
3160 if (info->relocatable)
3161 continue;
3162
64d25c44
L
3163 if (rel->r_addend == 0
3164 && r_type == R_X86_64_64
3165 && !ABI_64_P (output_bfd))
3166 {
3167 /* For x32, treat R_X86_64_64 like R_X86_64_32 and zero-extend
3168 it to 64bit if addend is zero. */
3169 r_type = R_X86_64_32;
3170 memset (contents + rel->r_offset + 4, 0, 4);
3171 }
3172
cbe950e9
L
3173 /* Since STT_GNU_IFUNC symbol must go through PLT, we handle
3174 it here if it is defined in a non-shared object. */
3175 if (h != NULL
3176 && h->type == STT_GNU_IFUNC
3177 && h->def_regular)
3178 {
3179 asection *plt;
3180 bfd_vma plt_index;
4c544807 3181 const char *name;
cbe950e9
L
3182
3183 if ((input_section->flags & SEC_ALLOC) == 0
3184 || h->plt.offset == (bfd_vma) -1)
3185 abort ();
3186
3187 /* STT_GNU_IFUNC symbol must go through PLT. */
6de2ae4a 3188 plt = htab->elf.splt ? htab->elf.splt : htab->elf.iplt;
cbe950e9
L
3189 relocation = (plt->output_section->vma
3190 + plt->output_offset + h->plt.offset);
3191
3192 switch (r_type)
3193 {
3194 default:
4c544807
L
3195 if (h->root.root.string)
3196 name = h->root.root.string;
3197 else
3198 name = bfd_elf_sym_name (input_bfd, symtab_hdr, sym,
3199 NULL);
cbe950e9
L
3200 (*_bfd_error_handler)
3201 (_("%B: relocation %s against STT_GNU_IFUNC "
3202 "symbol `%s' isn't handled by %s"), input_bfd,
3203 x86_64_elf_howto_table[r_type].name,
4c544807 3204 name, __FUNCTION__);
cbe950e9
L
3205 bfd_set_error (bfd_error_bad_value);
3206 return FALSE;
3207
3208 case R_X86_64_32S:
710ab287 3209 if (info->shared)
cbe950e9 3210 abort ();
710ab287
L
3211 goto do_relocation;
3212
248775ba
L
3213 case R_X86_64_32:
3214 if (ABI_64_P (output_bfd))
3215 goto do_relocation;
17672001 3216 /* FALLTHROUGH */
eed180f8 3217 case R_X86_64_64:
710ab287
L
3218 if (rel->r_addend != 0)
3219 {
4c544807
L
3220 if (h->root.root.string)
3221 name = h->root.root.string;
3222 else
3223 name = bfd_elf_sym_name (input_bfd, symtab_hdr,
3224 sym, NULL);
710ab287
L
3225 (*_bfd_error_handler)
3226 (_("%B: relocation %s against STT_GNU_IFUNC "
3227 "symbol `%s' has non-zero addend: %d"),
3228 input_bfd, x86_64_elf_howto_table[r_type].name,
4c544807 3229 name, rel->r_addend);
710ab287
L
3230 bfd_set_error (bfd_error_bad_value);
3231 return FALSE;
3232 }
3233
3234 /* Generate dynamic relcoation only when there is a
c293fa49 3235 non-GOT reference in a shared object. */
710ab287
L
3236 if (info->shared && h->non_got_ref)
3237 {
3238 Elf_Internal_Rela outrel;
710ab287
L
3239 asection *sreloc;
3240
c25bc9fc
L
3241 /* Need a dynamic relocation to get the real function
3242 address. */
710ab287
L
3243 outrel.r_offset = _bfd_elf_section_offset (output_bfd,
3244 info,
3245 input_section,
3246 rel->r_offset);
3247 if (outrel.r_offset == (bfd_vma) -1
3248 || outrel.r_offset == (bfd_vma) -2)
3249 abort ();
3250
3251 outrel.r_offset += (input_section->output_section->vma
3252 + input_section->output_offset);
3253
3254 if (h->dynindx == -1
44c4ea11
L
3255 || h->forced_local
3256 || info->executable)
710ab287
L
3257 {
3258 /* This symbol is resolved locally. */
56b8aada
L
3259 outrel.r_info = htab->r_info (0, R_X86_64_IRELATIVE);
3260 outrel.r_addend = (h->root.u.def.value
3261 + h->root.u.def.section->output_section->vma
3262 + h->root.u.def.section->output_offset);
710ab287
L
3263 }
3264 else
3265 {
351f65ca 3266 outrel.r_info = htab->r_info (h->dynindx, r_type);
710ab287
L
3267 outrel.r_addend = 0;
3268 }
3269
6de2ae4a 3270 sreloc = htab->elf.irelifunc;
351f65ca 3271 elf_append_rela (output_bfd, sreloc, &outrel);
710ab287
L
3272
3273 /* If this reloc is against an external symbol, we
3274 do not want to fiddle with the addend. Otherwise,
3275 we need to include the symbol value so that it
3276 becomes an addend for the dynamic reloc. For an
3277 internal symbol, we have updated addend. */
56b8aada 3278 continue;
710ab287 3279 }
17672001 3280 /* FALLTHROUGH */
cbe950e9
L
3281 case R_X86_64_PC32:
3282 case R_X86_64_PC64:
3283 case R_X86_64_PLT32:
3284 goto do_relocation;
3285
3286 case R_X86_64_GOTPCREL:
3287 case R_X86_64_GOTPCREL64:
6de2ae4a 3288 base_got = htab->elf.sgot;
cbe950e9
L
3289 off = h->got.offset;
3290
7afd84dc 3291 if (base_got == NULL)
cbe950e9
L
3292 abort ();
3293
7afd84dc 3294 if (off == (bfd_vma) -1)
cbe950e9 3295 {
7afd84dc
L
3296 /* We can't use h->got.offset here to save state, or
3297 even just remember the offset, as finish_dynamic_symbol
3298 would use that as offset into .got. */
cbe950e9 3299
6de2ae4a 3300 if (htab->elf.splt != NULL)
7afd84dc 3301 {
eed180f8 3302 plt_index = h->plt.offset / plt_entry_size - 1;
7afd84dc 3303 off = (plt_index + 3) * GOT_ENTRY_SIZE;
6de2ae4a 3304 base_got = htab->elf.sgotplt;
7afd84dc 3305 }
cbe950e9
L
3306 else
3307 {
eed180f8 3308 plt_index = h->plt.offset / plt_entry_size;
7afd84dc 3309 off = plt_index * GOT_ENTRY_SIZE;
6de2ae4a 3310 base_got = htab->elf.igotplt;
7afd84dc
L
3311 }
3312
3313 if (h->dynindx == -1
3314 || h->forced_local
3315 || info->symbolic)
3316 {
eed180f8 3317 /* This references the local defitionion. We must
7afd84dc 3318 initialize this entry in the global offset table.
eed180f8 3319 Since the offset must always be a multiple of 8,
7afd84dc
L
3320 we use the least significant bit to record
3321 whether we have initialized it already.
3322
3323 When doing a dynamic link, we create a .rela.got
3324 relocation entry to initialize the value. This
3325 is done in the finish_dynamic_symbol routine. */
3326 if ((off & 1) != 0)
3327 off &= ~1;
3328 else
3329 {
3330 bfd_put_64 (output_bfd, relocation,
3331 base_got->contents + off);
3332 /* Note that this is harmless for the GOTPLT64
3333 case, as -1 | 1 still is -1. */
3334 h->got.offset |= 1;
3335 }
cbe950e9
L
3336 }
3337 }
3338
3339 relocation = (base_got->output_section->vma
3340 + base_got->output_offset + off);
3341
cbe950e9
L
3342 goto do_relocation;
3343 }
3344 }
3345
70256ad8
AJ
3346 /* When generating a shared object, the relocations handled here are
3347 copied into the output file to be resolved at run time. */
3348 switch (r_type)
3349 {
3350 case R_X86_64_GOT32:
7b81dfbb 3351 case R_X86_64_GOT64:
70256ad8
AJ
3352 /* Relocation is to the entry for this symbol in the global
3353 offset table. */
70256ad8 3354 case R_X86_64_GOTPCREL:
7b81dfbb
AJ
3355 case R_X86_64_GOTPCREL64:
3356 /* Use global offset table entry as symbol value. */
3357 case R_X86_64_GOTPLT64:
3358 /* This is the same as GOT64 for relocation purposes, but
3359 indicates the existence of a PLT entry. The difficulty is,
3360 that we must calculate the GOT slot offset from the PLT
3361 offset, if this symbol got a PLT entry (it was global).
3362 Additionally if it's computed from the PLT entry, then that
3363 GOT offset is relative to .got.plt, not to .got. */
6de2ae4a 3364 base_got = htab->elf.sgot;
7b81dfbb 3365
6de2ae4a 3366 if (htab->elf.sgot == NULL)
c434dee6 3367 abort ();
053579d7 3368
51e0a107 3369 if (h != NULL)
70256ad8 3370 {
b34976b6 3371 bfd_boolean dyn;
c434dee6
AJ
3372
3373 off = h->got.offset;
7b81dfbb 3374 if (h->needs_plt
eed180f8 3375 && h->plt.offset != (bfd_vma)-1
7b81dfbb
AJ
3376 && off == (bfd_vma)-1)
3377 {
3378 /* We can't use h->got.offset here to save
3379 state, or even just remember the offset, as
3380 finish_dynamic_symbol would use that as offset into
3381 .got. */
eed180f8 3382 bfd_vma plt_index = h->plt.offset / plt_entry_size - 1;
7b81dfbb 3383 off = (plt_index + 3) * GOT_ENTRY_SIZE;
6de2ae4a 3384 base_got = htab->elf.sgotplt;
7b81dfbb
AJ
3385 }
3386
c434dee6 3387 dyn = htab->elf.dynamic_sections_created;
51e0a107 3388
27482721 3389 if (! WILL_CALL_FINISH_DYNAMIC_SYMBOL (dyn, info->shared, h)
51e0a107 3390 || (info->shared
27482721 3391 && SYMBOL_REFERENCES_LOCAL (info, h))
4bc6e03a
AJ
3392 || (ELF_ST_VISIBILITY (h->other)
3393 && h->root.type == bfd_link_hash_undefweak))
51e0a107
JH
3394 {
3395 /* This is actually a static link, or it is a -Bsymbolic
3396 link and the symbol is defined locally, or the symbol
407443a3 3397 was forced to be local because of a version file. We
51e0a107
JH
3398 must initialize this entry in the global offset table.
3399 Since the offset must always be a multiple of 8, we
3400 use the least significant bit to record whether we
3401 have initialized it already.
3402
3403 When doing a dynamic link, we create a .rela.got
407443a3
AJ
3404 relocation entry to initialize the value. This is
3405 done in the finish_dynamic_symbol routine. */
51e0a107
JH
3406 if ((off & 1) != 0)
3407 off &= ~1;
3408 else
3409 {
3410 bfd_put_64 (output_bfd, relocation,
7b81dfbb
AJ
3411 base_got->contents + off);
3412 /* Note that this is harmless for the GOTPLT64 case,
eed180f8 3413 as -1 | 1 still is -1. */
51e0a107
JH
3414 h->got.offset |= 1;
3415 }
3416 }
053579d7 3417 else
b34976b6 3418 unresolved_reloc = FALSE;
70256ad8 3419 }
51e0a107
JH
3420 else
3421 {
c434dee6
AJ
3422 if (local_got_offsets == NULL)
3423 abort ();
51e0a107
JH
3424
3425 off = local_got_offsets[r_symndx];
3426
3427 /* The offset must always be a multiple of 8. We use
407443a3
AJ
3428 the least significant bit to record whether we have
3429 already generated the necessary reloc. */
51e0a107
JH
3430 if ((off & 1) != 0)
3431 off &= ~1;
3432 else
3433 {
c434dee6 3434 bfd_put_64 (output_bfd, relocation,
7b81dfbb 3435 base_got->contents + off);
51e0a107
JH
3436
3437 if (info->shared)
3438 {
947216bf 3439 asection *s;
51e0a107 3440 Elf_Internal_Rela outrel;
70256ad8 3441
51e0a107
JH
3442 /* We need to generate a R_X86_64_RELATIVE reloc
3443 for the dynamic linker. */
6de2ae4a 3444 s = htab->elf.srelgot;
947216bf 3445 if (s == NULL)
c434dee6 3446 abort ();
51e0a107 3447
7b81dfbb
AJ
3448 outrel.r_offset = (base_got->output_section->vma
3449 + base_got->output_offset
51e0a107 3450 + off);
351f65ca 3451 outrel.r_info = htab->r_info (0, R_X86_64_RELATIVE);
51e0a107 3452 outrel.r_addend = relocation;
351f65ca 3453 elf_append_rela (output_bfd, s, &outrel);
51e0a107
JH
3454 }
3455
3456 local_got_offsets[r_symndx] |= 1;
3457 }
51e0a107 3458 }
6a2bda3f 3459
c434dee6
AJ
3460 if (off >= (bfd_vma) -2)
3461 abort ();
3462
80d87326
L
3463 if (r_type == R_X86_64_GOTPCREL
3464 && h->def_regular
3465 && SYMBOL_REFERENCES_LOCAL (info, h)
3466 && bfd_get_8 (input_bfd,
3467 contents + rel->r_offset - 2) == 0x8b)
3468 {
3469 /* Convert
3470 mov foo@GOTPCREL(%rip), %reg
3471 to
3472 lea foo(%rip), %reg
3473 */
3474 bfd_put_8 (output_bfd, 0x8d,
3475 contents + rel->r_offset - 2);
3476 break;
3477 }
3478
7b81dfbb
AJ
3479 relocation = base_got->output_section->vma
3480 + base_got->output_offset + off;
3481 if (r_type != R_X86_64_GOTPCREL && r_type != R_X86_64_GOTPCREL64)
6de2ae4a
L
3482 relocation -= htab->elf.sgotplt->output_section->vma
3483 - htab->elf.sgotplt->output_offset;
c434dee6 3484
70256ad8
AJ
3485 break;
3486
d6ab8113
JB
3487 case R_X86_64_GOTOFF64:
3488 /* Relocation is relative to the start of the global offset
3489 table. */
3490
3491 /* Check to make sure it isn't a protected function symbol
3492 for shared library since it may not be local when used
3493 as function address. */
bdb892b9 3494 if (!info->executable
d6ab8113 3495 && h
bdb892b9 3496 && !SYMBOLIC_BIND (info, h)
d6ab8113
JB
3497 && h->def_regular
3498 && h->type == STT_FUNC
3499 && ELF_ST_VISIBILITY (h->other) == STV_PROTECTED)
3500 {
3501 (*_bfd_error_handler)
3502 (_("%B: relocation R_X86_64_GOTOFF64 against protected function `%s' can not be used when making a shared object"),
3503 input_bfd, h->root.root.string);
3504 bfd_set_error (bfd_error_bad_value);
3505 return FALSE;
3506 }
3507
3508 /* Note that sgot is not involved in this
3509 calculation. We always want the start of .got.plt. If we
3510 defined _GLOBAL_OFFSET_TABLE_ in a different way, as is
3511 permitted by the ABI, we might have to change this
3512 calculation. */
6de2ae4a
L
3513 relocation -= htab->elf.sgotplt->output_section->vma
3514 + htab->elf.sgotplt->output_offset;
d6ab8113
JB
3515 break;
3516
3517 case R_X86_64_GOTPC32:
7b81dfbb 3518 case R_X86_64_GOTPC64:
d6ab8113 3519 /* Use global offset table as symbol value. */
6de2ae4a
L
3520 relocation = htab->elf.sgotplt->output_section->vma
3521 + htab->elf.sgotplt->output_offset;
d6ab8113
JB
3522 unresolved_reloc = FALSE;
3523 break;
7b81dfbb
AJ
3524
3525 case R_X86_64_PLTOFF64:
3526 /* Relocation is PLT entry relative to GOT. For local
3527 symbols it's the symbol itself relative to GOT. */
eed180f8 3528 if (h != NULL
7b81dfbb
AJ
3529 /* See PLT32 handling. */
3530 && h->plt.offset != (bfd_vma) -1
6de2ae4a 3531 && htab->elf.splt != NULL)
7b81dfbb 3532 {
6de2ae4a
L
3533 relocation = (htab->elf.splt->output_section->vma
3534 + htab->elf.splt->output_offset
7b81dfbb
AJ
3535 + h->plt.offset);
3536 unresolved_reloc = FALSE;
3537 }
3538
6de2ae4a
L
3539 relocation -= htab->elf.sgotplt->output_section->vma
3540 + htab->elf.sgotplt->output_offset;
7b81dfbb 3541 break;
d6ab8113 3542
70256ad8
AJ
3543 case R_X86_64_PLT32:
3544 /* Relocation is to the entry for this symbol in the
3545 procedure linkage table. */
3546
3547 /* Resolve a PLT32 reloc against a local symbol directly,
407443a3 3548 without using the procedure linkage table. */
70256ad8
AJ
3549 if (h == NULL)
3550 break;
3551
c434dee6 3552 if (h->plt.offset == (bfd_vma) -1
6de2ae4a 3553 || htab->elf.splt == NULL)
70256ad8
AJ
3554 {
3555 /* We didn't make a PLT entry for this symbol. This
407443a3
AJ
3556 happens when statically linking PIC code, or when
3557 using -Bsymbolic. */
70256ad8
AJ
3558 break;
3559 }
3560
6de2ae4a
L
3561 relocation = (htab->elf.splt->output_section->vma
3562 + htab->elf.splt->output_offset
70256ad8 3563 + h->plt.offset);
b34976b6 3564 unresolved_reloc = FALSE;
70256ad8
AJ
3565 break;
3566
fd8ab9e5
AJ
3567 case R_X86_64_PC8:
3568 case R_X86_64_PC16:
3569 case R_X86_64_PC32:
6610a52d 3570 if (info->shared
ba3bee0b 3571 && (input_section->flags & SEC_ALLOC) != 0
90f487df 3572 && (input_section->flags & SEC_READONLY) != 0
41bed6dd 3573 && h != NULL)
6610a52d 3574 {
41bed6dd
L
3575 bfd_boolean fail = FALSE;
3576 bfd_boolean branch
3577 = (r_type == R_X86_64_PC32
3578 && is_32bit_relative_branch (contents, rel->r_offset));
3579
3580 if (SYMBOL_REFERENCES_LOCAL (info, h))
3581 {
3582 /* Symbol is referenced locally. Make sure it is
3583 defined locally or for a branch. */
3584 fail = !h->def_regular && !branch;
3585 }
90f487df 3586 else
41bed6dd
L
3587 {
3588 /* Symbol isn't referenced locally. We only allow
3589 branch to symbol with non-default visibility. */
3590 fail = (!branch
3591 || ELF_ST_VISIBILITY (h->other) == STV_DEFAULT);
3592 }
3593
3594 if (fail)
3595 {
3596 const char *fmt;
3597 const char *v;
3598 const char *pic = "";
3599
3600 switch (ELF_ST_VISIBILITY (h->other))
3601 {
3602 case STV_HIDDEN:
3603 v = _("hidden symbol");
3604 break;
3605 case STV_INTERNAL:
3606 v = _("internal symbol");
3607 break;
3608 case STV_PROTECTED:
3609 v = _("protected symbol");
3610 break;
3611 default:
3612 v = _("symbol");
3613 pic = _("; recompile with -fPIC");
3614 break;
3615 }
3616
3617 if (h->def_regular)
3618 fmt = _("%B: relocation %s against %s `%s' can not be used when making a shared object%s");
3619 else
3620 fmt = _("%B: relocation %s against undefined %s `%s' can not be used when making a shared object%s");
3621
3622 (*_bfd_error_handler) (fmt, input_bfd,
3623 x86_64_elf_howto_table[r_type].name,
3624 v, h->root.root.string, pic);
3625 bfd_set_error (bfd_error_bad_value);
3626 return FALSE;
3627 }
6610a52d
L
3628 }
3629 /* Fall through. */
3630
70256ad8
AJ
3631 case R_X86_64_8:
3632 case R_X86_64_16:
3633 case R_X86_64_32:
d6ab8113 3634 case R_X86_64_PC64:
6b3db546 3635 case R_X86_64_64:
80643fbc 3636 /* FIXME: The ABI says the linker should make sure the value is
407443a3 3637 the same when it's zeroextended to 64 bit. */
c434dee6 3638
b1e24c02 3639 if ((input_section->flags & SEC_ALLOC) == 0)
c434dee6
AJ
3640 break;
3641
3642 if ((info->shared
4bc6e03a
AJ
3643 && (h == NULL
3644 || ELF_ST_VISIBILITY (h->other) == STV_DEFAULT
3645 || h->root.type != bfd_link_hash_undefweak)
d8045f23
NC
3646 && (! IS_X86_64_PCREL_TYPE (r_type)
3647 || ! SYMBOL_CALLS_LOCAL (info, h)))
d40d037c
AJ
3648 || (ELIMINATE_COPY_RELOCS
3649 && !info->shared
c434dee6
AJ
3650 && h != NULL
3651 && h->dynindx != -1
f5385ebf
AM
3652 && !h->non_got_ref
3653 && ((h->def_dynamic
3654 && !h->def_regular)
c434dee6 3655 || h->root.type == bfd_link_hash_undefweak
0f88be7a 3656 || h->root.type == bfd_link_hash_undefined)))
70256ad8
AJ
3657 {
3658 Elf_Internal_Rela outrel;
b34976b6 3659 bfd_boolean skip, relocate;
c434dee6 3660 asection *sreloc;
70256ad8
AJ
3661
3662 /* When generating a shared object, these relocations
3663 are copied into the output file to be resolved at run
407443a3 3664 time. */
b34976b6
AM
3665 skip = FALSE;
3666 relocate = FALSE;
70256ad8 3667
c629eae0
JJ
3668 outrel.r_offset =
3669 _bfd_elf_section_offset (output_bfd, info, input_section,
c434dee6 3670 rel->r_offset);
c629eae0 3671 if (outrel.r_offset == (bfd_vma) -1)
b34976b6 3672 skip = TRUE;
0fb19cbc 3673 else if (outrel.r_offset == (bfd_vma) -2)
b34976b6 3674 skip = TRUE, relocate = TRUE;
70256ad8
AJ
3675
3676 outrel.r_offset += (input_section->output_section->vma
3677 + input_section->output_offset);
3678
3679 if (skip)
0bb2d96a 3680 memset (&outrel, 0, sizeof outrel);
c434dee6 3681
fd8ab9e5
AJ
3682 /* h->dynindx may be -1 if this symbol was marked to
3683 become local. */
3684 else if (h != NULL
c434dee6 3685 && h->dynindx != -1
d8045f23
NC
3686 && (IS_X86_64_PCREL_TYPE (r_type)
3687 || ! info->shared
3688 || ! SYMBOLIC_BIND (info, h)
3689 || ! h->def_regular))
70256ad8 3690 {
351f65ca 3691 outrel.r_info = htab->r_info (h->dynindx, r_type);
c434dee6 3692 outrel.r_addend = rel->r_addend;
70256ad8
AJ
3693 }
3694 else
3695 {
c434dee6 3696 /* This symbol is local, or marked to become local. */
248775ba 3697 if (r_type == htab->pointer_r_type)
607c0e09 3698 {
b34976b6 3699 relocate = TRUE;
351f65ca 3700 outrel.r_info = htab->r_info (0, R_X86_64_RELATIVE);
607c0e09
AS
3701 outrel.r_addend = relocation + rel->r_addend;
3702 }
64d25c44
L
3703 else if (r_type == R_X86_64_64
3704 && !ABI_64_P (output_bfd))
3705 {
3706 relocate = TRUE;
3707 outrel.r_info = htab->r_info (0,
3708 R_X86_64_RELATIVE64);
3709 outrel.r_addend = relocation + rel->r_addend;
8cf0d2dd
L
3710 /* Check addend overflow. */
3711 if ((outrel.r_addend & 0x80000000)
3712 != (rel->r_addend & 0x80000000))
3713 {
3714 const char *name;
268a8d3a 3715 int addend = rel->r_addend;
8cf0d2dd
L
3716 if (h && h->root.root.string)
3717 name = h->root.root.string;
3718 else
3719 name = bfd_elf_sym_name (input_bfd, symtab_hdr,
3720 sym, NULL);
6f2c9068
L
3721 if (addend < 0)
3722 (*_bfd_error_handler)
268a8d3a 3723 (_("%B: addend -0x%x in relocation %s against "
6f2c9068
L
3724 "symbol `%s' at 0x%lx in section `%A' is "
3725 "out of range"),
3726 input_bfd, input_section, addend,
3727 x86_64_elf_howto_table[r_type].name,
3728 name, (unsigned long) rel->r_offset);
3729 else
3730 (*_bfd_error_handler)
268a8d3a 3731 (_("%B: addend 0x%x in relocation %s against "
6f2c9068
L
3732 "symbol `%s' at 0x%lx in section `%A' is "
3733 "out of range"),
3734 input_bfd, input_section, addend,
3735 x86_64_elf_howto_table[r_type].name,
3736 name, (unsigned long) rel->r_offset);
8cf0d2dd
L
3737 bfd_set_error (bfd_error_bad_value);
3738 return FALSE;
3739 }
64d25c44 3740 }
607c0e09
AS
3741 else
3742 {
3743 long sindx;
3744
8517fae7 3745 if (bfd_is_abs_section (sec))
607c0e09
AS
3746 sindx = 0;
3747 else if (sec == NULL || sec->owner == NULL)
3748 {
3749 bfd_set_error (bfd_error_bad_value);
b34976b6 3750 return FALSE;
607c0e09
AS
3751 }
3752 else
3753 {
3754 asection *osec;
3755
74541ad4
AM
3756 /* We are turning this relocation into one
3757 against a section symbol. It would be
3758 proper to subtract the symbol's value,
3759 osec->vma, from the emitted reloc addend,
3760 but ld.so expects buggy relocs. */
607c0e09
AS
3761 osec = sec->output_section;
3762 sindx = elf_section_data (osec)->dynindx;
74541ad4
AM
3763 if (sindx == 0)
3764 {
3765 asection *oi = htab->elf.text_index_section;
3766 sindx = elf_section_data (oi)->dynindx;
3767 }
3768 BFD_ASSERT (sindx != 0);
607c0e09
AS
3769 }
3770
351f65ca 3771 outrel.r_info = htab->r_info (sindx, r_type);
607c0e09
AS
3772 outrel.r_addend = relocation + rel->r_addend;
3773 }
70256ad8
AJ
3774 }
3775
cbe950e9 3776 sreloc = elf_section_data (input_section)->sreloc;
d8045f23 3777
62d78908
L
3778 if (sreloc == NULL || sreloc->contents == NULL)
3779 {
3780 r = bfd_reloc_notsupported;
3781 goto check_relocation_error;
3782 }
c434dee6 3783
351f65ca 3784 elf_append_rela (output_bfd, sreloc, &outrel);
70256ad8
AJ
3785
3786 /* If this reloc is against an external symbol, we do
3787 not want to fiddle with the addend. Otherwise, we
3788 need to include the symbol value so that it becomes
3789 an addend for the dynamic reloc. */
0f88be7a 3790 if (! relocate)
70256ad8
AJ
3791 continue;
3792 }
3793
3794 break;
3795
bffbf940 3796 case R_X86_64_TLSGD:
67a4f2b7
AO
3797 case R_X86_64_GOTPC32_TLSDESC:
3798 case R_X86_64_TLSDESC_CALL:
bffbf940 3799 case R_X86_64_GOTTPOFF:
bffbf940
JJ
3800 tls_type = GOT_UNKNOWN;
3801 if (h == NULL && local_got_offsets)
351f65ca 3802 tls_type = elf_x86_64_local_got_tls_type (input_bfd) [r_symndx];
bffbf940 3803 else if (h != NULL)
351f65ca 3804 tls_type = elf_x86_64_hash_entry (h)->tls_type;
142411ca 3805
351f65ca
L
3806 if (! elf_x86_64_tls_transition (info, input_bfd,
3807 input_section, contents,
3808 symtab_hdr, sym_hashes,
3809 &r_type, tls_type, rel,
3810 relend, h, r_symndx))
534a31f6 3811 return FALSE;
bffbf940
JJ
3812
3813 if (r_type == R_X86_64_TPOFF32)
3814 {
142411ca
L
3815 bfd_vma roff = rel->r_offset;
3816
bffbf940 3817 BFD_ASSERT (! unresolved_reloc);
142411ca 3818
351f65ca 3819 if (ELF32_R_TYPE (rel->r_info) == R_X86_64_TLSGD)
bffbf940 3820 {
52bc799a 3821 /* GD->LE transition. For 64bit, change
abcf1d52 3822 .byte 0x66; leaq foo@tlsgd(%rip), %rdi
a3fadc9a 3823 .word 0x6666; rex64; call __tls_get_addr
52bc799a 3824 into:
bffbf940 3825 movq %fs:0, %rax
52bc799a
L
3826 leaq foo@tpoff(%rax), %rax
3827 For 32bit, change
3828 leaq foo@tlsgd(%rip), %rdi
3829 .word 0x6666; rex64; call __tls_get_addr
3830 into:
3831 movl %fs:0, %eax
bffbf940 3832 leaq foo@tpoff(%rax), %rax */
52bc799a
L
3833 if (ABI_64_P (output_bfd))
3834 memcpy (contents + roff - 4,
3835 "\x64\x48\x8b\x04\x25\0\0\0\0\x48\x8d\x80\0\0\0",
3836 16);
3837 else
3838 memcpy (contents + roff - 3,
3839 "\x64\x8b\x04\x25\0\0\0\0\x48\x8d\x80\0\0\0",
3840 15);
eb4ff4d6 3841 bfd_put_32 (output_bfd,
351f65ca 3842 elf_x86_64_tpoff (info, relocation),
142411ca 3843 contents + roff + 8);
a3fadc9a 3844 /* Skip R_X86_64_PC32/R_X86_64_PLT32. */
bffbf940
JJ
3845 rel++;
3846 continue;
3847 }
351f65ca 3848 else if (ELF32_R_TYPE (rel->r_info) == R_X86_64_GOTPC32_TLSDESC)
67a4f2b7
AO
3849 {
3850 /* GDesc -> LE transition.
3851 It's originally something like:
3852 leaq x@tlsdesc(%rip), %rax
3853
3854 Change it to:
c9736ba0 3855 movl $x@tpoff, %rax. */
67a4f2b7 3856
c9736ba0 3857 unsigned int val, type;
67a4f2b7 3858
67a4f2b7 3859 type = bfd_get_8 (input_bfd, contents + roff - 3);
67a4f2b7 3860 val = bfd_get_8 (input_bfd, contents + roff - 1);
67a4f2b7
AO
3861 bfd_put_8 (output_bfd, 0x48 | ((type >> 2) & 1),
3862 contents + roff - 3);
3863 bfd_put_8 (output_bfd, 0xc7, contents + roff - 2);
3864 bfd_put_8 (output_bfd, 0xc0 | ((val >> 3) & 7),
3865 contents + roff - 1);
eb4ff4d6 3866 bfd_put_32 (output_bfd,
351f65ca 3867 elf_x86_64_tpoff (info, relocation),
67a4f2b7
AO
3868 contents + roff);
3869 continue;
3870 }
351f65ca 3871 else if (ELF32_R_TYPE (rel->r_info) == R_X86_64_TLSDESC_CALL)
67a4f2b7
AO
3872 {
3873 /* GDesc -> LE transition.
3874 It's originally:
3875 call *(%rax)
3876 Turn it into:
142411ca 3877 xchg %ax,%ax. */
10efb593 3878 bfd_put_8 (output_bfd, 0x66, contents + roff);
67a4f2b7
AO
3879 bfd_put_8 (output_bfd, 0x90, contents + roff + 1);
3880 continue;
3881 }
351f65ca 3882 else if (ELF32_R_TYPE (rel->r_info) == R_X86_64_GOTTPOFF)
bffbf940 3883 {
bffbf940
JJ
3884 /* IE->LE transition:
3885 Originally it can be one of:
3886 movq foo@gottpoff(%rip), %reg
3887 addq foo@gottpoff(%rip), %reg
3888 We change it into:
3889 movq $foo, %reg
3890 leaq foo(%reg), %reg
3891 addq $foo, %reg. */
142411ca
L
3892
3893 unsigned int val, type, reg;
3894
3895 val = bfd_get_8 (input_bfd, contents + roff - 3);
3896 type = bfd_get_8 (input_bfd, contents + roff - 2);
3897 reg = bfd_get_8 (input_bfd, contents + roff - 1);
bffbf940 3898 reg >>= 3;
bffbf940
JJ
3899 if (type == 0x8b)
3900 {
3901 /* movq */
3902 if (val == 0x4c)
3903 bfd_put_8 (output_bfd, 0x49,
142411ca 3904 contents + roff - 3);
4a4c5f25
L
3905 else if (!ABI_64_P (output_bfd) && val == 0x44)
3906 bfd_put_8 (output_bfd, 0x41,
3907 contents + roff - 3);
bffbf940 3908 bfd_put_8 (output_bfd, 0xc7,
142411ca 3909 contents + roff - 2);
bffbf940 3910 bfd_put_8 (output_bfd, 0xc0 | reg,
142411ca 3911 contents + roff - 1);
bffbf940
JJ
3912 }
3913 else if (reg == 4)
3914 {
3915 /* addq -> addq - addressing with %rsp/%r12 is
3916 special */
3917 if (val == 0x4c)
3918 bfd_put_8 (output_bfd, 0x49,
142411ca 3919 contents + roff - 3);
4a4c5f25
L
3920 else if (!ABI_64_P (output_bfd) && val == 0x44)
3921 bfd_put_8 (output_bfd, 0x41,
3922 contents + roff - 3);
bffbf940 3923 bfd_put_8 (output_bfd, 0x81,
142411ca 3924 contents + roff - 2);
bffbf940 3925 bfd_put_8 (output_bfd, 0xc0 | reg,
142411ca 3926 contents + roff - 1);
bffbf940
JJ
3927 }
3928 else
3929 {
3930 /* addq -> leaq */
3931 if (val == 0x4c)
3932 bfd_put_8 (output_bfd, 0x4d,
142411ca 3933 contents + roff - 3);
4a4c5f25
L
3934 else if (!ABI_64_P (output_bfd) && val == 0x44)
3935 bfd_put_8 (output_bfd, 0x45,
3936 contents + roff - 3);
bffbf940 3937 bfd_put_8 (output_bfd, 0x8d,
142411ca 3938 contents + roff - 2);
bffbf940 3939 bfd_put_8 (output_bfd, 0x80 | reg | (reg << 3),
142411ca 3940 contents + roff - 1);
bffbf940 3941 }
eb4ff4d6 3942 bfd_put_32 (output_bfd,
351f65ca 3943 elf_x86_64_tpoff (info, relocation),
142411ca 3944 contents + roff);
bffbf940
JJ
3945 continue;
3946 }
142411ca
L
3947 else
3948 BFD_ASSERT (FALSE);
bffbf940
JJ
3949 }
3950
6de2ae4a 3951 if (htab->elf.sgot == NULL)
bffbf940
JJ
3952 abort ();
3953
3954 if (h != NULL)
67a4f2b7
AO
3955 {
3956 off = h->got.offset;
351f65ca 3957 offplt = elf_x86_64_hash_entry (h)->tlsdesc_got;
67a4f2b7 3958 }
bffbf940
JJ
3959 else
3960 {
3961 if (local_got_offsets == NULL)
3962 abort ();
3963
3964 off = local_got_offsets[r_symndx];
67a4f2b7 3965 offplt = local_tlsdesc_gotents[r_symndx];
bffbf940
JJ
3966 }
3967
3968 if ((off & 1) != 0)
3969 off &= ~1;
26e41594 3970 else
bffbf940
JJ
3971 {
3972 Elf_Internal_Rela outrel;
bffbf940 3973 int dr_type, indx;
67a4f2b7 3974 asection *sreloc;
bffbf940 3975
6de2ae4a 3976 if (htab->elf.srelgot == NULL)
bffbf940
JJ
3977 abort ();
3978
67a4f2b7
AO
3979 indx = h && h->dynindx != -1 ? h->dynindx : 0;
3980
3981 if (GOT_TLS_GDESC_P (tls_type))
3982 {
351f65ca 3983 outrel.r_info = htab->r_info (indx, R_X86_64_TLSDESC);
67a4f2b7 3984 BFD_ASSERT (htab->sgotplt_jump_table_size + offplt
6de2ae4a
L
3985 + 2 * GOT_ENTRY_SIZE <= htab->elf.sgotplt->size);
3986 outrel.r_offset = (htab->elf.sgotplt->output_section->vma
3987 + htab->elf.sgotplt->output_offset
67a4f2b7
AO
3988 + offplt
3989 + htab->sgotplt_jump_table_size);
6de2ae4a 3990 sreloc = htab->elf.srelplt;
67a4f2b7 3991 if (indx == 0)
351f65ca 3992 outrel.r_addend = relocation - elf_x86_64_dtpoff_base (info);
67a4f2b7
AO
3993 else
3994 outrel.r_addend = 0;
351f65ca 3995 elf_append_rela (output_bfd, sreloc, &outrel);
67a4f2b7
AO
3996 }
3997
6de2ae4a 3998 sreloc = htab->elf.srelgot;
67a4f2b7 3999
6de2ae4a
L
4000 outrel.r_offset = (htab->elf.sgot->output_section->vma
4001 + htab->elf.sgot->output_offset + off);
bffbf940 4002
67a4f2b7 4003 if (GOT_TLS_GD_P (tls_type))
bffbf940 4004 dr_type = R_X86_64_DTPMOD64;
67a4f2b7
AO
4005 else if (GOT_TLS_GDESC_P (tls_type))
4006 goto dr_done;
bffbf940
JJ
4007 else
4008 dr_type = R_X86_64_TPOFF64;
4009
6de2ae4a 4010 bfd_put_64 (output_bfd, 0, htab->elf.sgot->contents + off);
bffbf940 4011 outrel.r_addend = 0;
67a4f2b7
AO
4012 if ((dr_type == R_X86_64_TPOFF64
4013 || dr_type == R_X86_64_TLSDESC) && indx == 0)
351f65ca
L
4014 outrel.r_addend = relocation - elf_x86_64_dtpoff_base (info);
4015 outrel.r_info = htab->r_info (indx, dr_type);
bffbf940 4016
351f65ca 4017 elf_append_rela (output_bfd, sreloc, &outrel);
bffbf940 4018
67a4f2b7 4019 if (GOT_TLS_GD_P (tls_type))
bffbf940
JJ
4020 {
4021 if (indx == 0)
4022 {
d40d037c 4023 BFD_ASSERT (! unresolved_reloc);
bffbf940 4024 bfd_put_64 (output_bfd,
351f65ca 4025 relocation - elf_x86_64_dtpoff_base (info),
6de2ae4a 4026 htab->elf.sgot->contents + off + GOT_ENTRY_SIZE);
bffbf940
JJ
4027 }
4028 else
4029 {
4030 bfd_put_64 (output_bfd, 0,
6de2ae4a 4031 htab->elf.sgot->contents + off + GOT_ENTRY_SIZE);
351f65ca 4032 outrel.r_info = htab->r_info (indx,
bffbf940
JJ
4033 R_X86_64_DTPOFF64);
4034 outrel.r_offset += GOT_ENTRY_SIZE;
351f65ca 4035 elf_append_rela (output_bfd, sreloc,
464d3bd4 4036 &outrel);
bffbf940
JJ
4037 }
4038 }
4039
67a4f2b7 4040 dr_done:
bffbf940
JJ
4041 if (h != NULL)
4042 h->got.offset |= 1;
4043 else
4044 local_got_offsets[r_symndx] |= 1;
4045 }
4046
67a4f2b7
AO
4047 if (off >= (bfd_vma) -2
4048 && ! GOT_TLS_GDESC_P (tls_type))
bffbf940 4049 abort ();
351f65ca 4050 if (r_type == ELF32_R_TYPE (rel->r_info))
bffbf940 4051 {
67a4f2b7
AO
4052 if (r_type == R_X86_64_GOTPC32_TLSDESC
4053 || r_type == R_X86_64_TLSDESC_CALL)
6de2ae4a
L
4054 relocation = htab->elf.sgotplt->output_section->vma
4055 + htab->elf.sgotplt->output_offset
67a4f2b7
AO
4056 + offplt + htab->sgotplt_jump_table_size;
4057 else
6de2ae4a
L
4058 relocation = htab->elf.sgot->output_section->vma
4059 + htab->elf.sgot->output_offset + off;
b34976b6 4060 unresolved_reloc = FALSE;
bffbf940 4061 }
142411ca 4062 else
67a4f2b7 4063 {
142411ca 4064 bfd_vma roff = rel->r_offset;
67a4f2b7 4065
351f65ca 4066 if (ELF32_R_TYPE (rel->r_info) == R_X86_64_TLSGD)
142411ca 4067 {
52bc799a 4068 /* GD->IE transition. For 64bit, change
142411ca
L
4069 .byte 0x66; leaq foo@tlsgd(%rip), %rdi
4070 .word 0x6666; rex64; call __tls_get_addr@plt
52bc799a 4071 into:
142411ca 4072 movq %fs:0, %rax
52bc799a
L
4073 addq foo@gottpoff(%rip), %rax
4074 For 32bit, change
4075 leaq foo@tlsgd(%rip), %rdi
4076 .word 0x6666; rex64; call __tls_get_addr@plt
4077 into:
4078 movl %fs:0, %eax
142411ca 4079 addq foo@gottpoff(%rip), %rax */
52bc799a
L
4080 if (ABI_64_P (output_bfd))
4081 memcpy (contents + roff - 4,
4082 "\x64\x48\x8b\x04\x25\0\0\0\0\x48\x03\x05\0\0\0",
4083 16);
4084 else
4085 memcpy (contents + roff - 3,
4086 "\x64\x8b\x04\x25\0\0\0\0\x48\x03\x05\0\0\0",
4087 15);
142411ca 4088
6de2ae4a
L
4089 relocation = (htab->elf.sgot->output_section->vma
4090 + htab->elf.sgot->output_offset + off
142411ca
L
4091 - roff
4092 - input_section->output_section->vma
4093 - input_section->output_offset
4094 - 12);
4095 bfd_put_32 (output_bfd, relocation,
4096 contents + roff + 8);
4097 /* Skip R_X86_64_PLT32. */
4098 rel++;
4099 continue;
4100 }
351f65ca 4101 else if (ELF32_R_TYPE (rel->r_info) == R_X86_64_GOTPC32_TLSDESC)
142411ca
L
4102 {
4103 /* GDesc -> IE transition.
4104 It's originally something like:
4105 leaq x@tlsdesc(%rip), %rax
67a4f2b7 4106
142411ca 4107 Change it to:
c9736ba0 4108 movq x@gottpoff(%rip), %rax # before xchg %ax,%ax. */
67a4f2b7 4109
142411ca
L
4110 /* Now modify the instruction as appropriate. To
4111 turn a leaq into a movq in the form we use it, it
4112 suffices to change the second byte from 0x8d to
4113 0x8b. */
4114 bfd_put_8 (output_bfd, 0x8b, contents + roff - 2);
4115
4116 bfd_put_32 (output_bfd,
6de2ae4a
L
4117 htab->elf.sgot->output_section->vma
4118 + htab->elf.sgot->output_offset + off
142411ca
L
4119 - rel->r_offset
4120 - input_section->output_section->vma
4121 - input_section->output_offset
4122 - 4,
4123 contents + roff);
4124 continue;
4125 }
351f65ca 4126 else if (ELF32_R_TYPE (rel->r_info) == R_X86_64_TLSDESC_CALL)
142411ca
L
4127 {
4128 /* GDesc -> IE transition.
4129 It's originally:
4130 call *(%rax)
4131
4132 Change it to:
c9736ba0 4133 xchg %ax, %ax. */
142411ca 4134
142411ca
L
4135 bfd_put_8 (output_bfd, 0x66, contents + roff);
4136 bfd_put_8 (output_bfd, 0x90, contents + roff + 1);
4137 continue;
4138 }
4139 else
4140 BFD_ASSERT (FALSE);
67a4f2b7 4141 }
bffbf940
JJ
4142 break;
4143
4144 case R_X86_64_TLSLD:
351f65ca
L
4145 if (! elf_x86_64_tls_transition (info, input_bfd,
4146 input_section, contents,
4147 symtab_hdr, sym_hashes,
4148 &r_type, GOT_UNKNOWN,
4149 rel, relend, h, r_symndx))
142411ca 4150 return FALSE;
a3fadc9a 4151
142411ca
L
4152 if (r_type != R_X86_64_TLSLD)
4153 {
bffbf940 4154 /* LD->LE transition:
a3fadc9a 4155 leaq foo@tlsld(%rip), %rdi; call __tls_get_addr.
52bc799a
L
4156 For 64bit, we change it into:
4157 .word 0x6666; .byte 0x66; movq %fs:0, %rax.
4158 For 32bit, we change it into:
4159 nopl 0x0(%rax); movl %fs:0, %eax. */
142411ca
L
4160
4161 BFD_ASSERT (r_type == R_X86_64_TPOFF32);
52bc799a
L
4162 if (ABI_64_P (output_bfd))
4163 memcpy (contents + rel->r_offset - 3,
4164 "\x66\x66\x66\x64\x48\x8b\x04\x25\0\0\0", 12);
4165 else
4166 memcpy (contents + rel->r_offset - 3,
4167 "\x0f\x1f\x40\x00\x64\x8b\x04\x25\0\0\0", 12);
a3fadc9a 4168 /* Skip R_X86_64_PC32/R_X86_64_PLT32. */
bffbf940
JJ
4169 rel++;
4170 continue;
4171 }
4172
6de2ae4a 4173 if (htab->elf.sgot == NULL)
bffbf940
JJ
4174 abort ();
4175
4176 off = htab->tls_ld_got.offset;
4177 if (off & 1)
4178 off &= ~1;
4179 else
4180 {
4181 Elf_Internal_Rela outrel;
bffbf940 4182
6de2ae4a 4183 if (htab->elf.srelgot == NULL)
bffbf940
JJ
4184 abort ();
4185
6de2ae4a
L
4186 outrel.r_offset = (htab->elf.sgot->output_section->vma
4187 + htab->elf.sgot->output_offset + off);
bffbf940
JJ
4188
4189 bfd_put_64 (output_bfd, 0,
6de2ae4a 4190 htab->elf.sgot->contents + off);
bffbf940 4191 bfd_put_64 (output_bfd, 0,
6de2ae4a 4192 htab->elf.sgot->contents + off + GOT_ENTRY_SIZE);
351f65ca 4193 outrel.r_info = htab->r_info (0, R_X86_64_DTPMOD64);
bffbf940 4194 outrel.r_addend = 0;
351f65ca 4195 elf_append_rela (output_bfd, htab->elf.srelgot,
464d3bd4 4196 &outrel);
bffbf940
JJ
4197 htab->tls_ld_got.offset |= 1;
4198 }
6de2ae4a
L
4199 relocation = htab->elf.sgot->output_section->vma
4200 + htab->elf.sgot->output_offset + off;
b34976b6 4201 unresolved_reloc = FALSE;
bffbf940
JJ
4202 break;
4203
4204 case R_X86_64_DTPOFF32:
1d85728f 4205 if (!info->executable|| (input_section->flags & SEC_CODE) == 0)
351f65ca 4206 relocation -= elf_x86_64_dtpoff_base (info);
bffbf940 4207 else
351f65ca 4208 relocation = elf_x86_64_tpoff (info, relocation);
bffbf940
JJ
4209 break;
4210
4211 case R_X86_64_TPOFF32:
6769d501 4212 case R_X86_64_TPOFF64:
9b769489 4213 BFD_ASSERT (info->executable);
351f65ca 4214 relocation = elf_x86_64_tpoff (info, relocation);
bffbf940
JJ
4215 break;
4216
70256ad8
AJ
4217 default:
4218 break;
4219 }
8d88c4ca 4220
239e1f3a
AM
4221 /* Dynamic relocs are not propagated for SEC_DEBUGGING sections
4222 because such sections are not SEC_ALLOC and thus ld.so will
4223 not process them. */
c434dee6 4224 if (unresolved_reloc
239e1f3a 4225 && !((input_section->flags & SEC_DEBUGGING) != 0
1d5316ab
AM
4226 && h->def_dynamic)
4227 && _bfd_elf_section_offset (output_bfd, info, input_section,
4228 rel->r_offset) != (bfd_vma) -1)
a040981f
L
4229 {
4230 (*_bfd_error_handler)
4231 (_("%B(%A+0x%lx): unresolvable %s relocation against symbol `%s'"),
4232 input_bfd,
4233 input_section,
4234 (long) rel->r_offset,
4235 howto->name,
4236 h->root.root.string);
4237 return FALSE;
4238 }
c434dee6 4239
cbe950e9 4240do_relocation:
8d88c4ca 4241 r = _bfd_final_link_relocate (howto, input_bfd, input_section,
c434dee6
AJ
4242 contents, rel->r_offset,
4243 relocation, rel->r_addend);
8d88c4ca 4244
62d78908 4245check_relocation_error:
8d88c4ca 4246 if (r != bfd_reloc_ok)
8da6118f 4247 {
c434dee6
AJ
4248 const char *name;
4249
4250 if (h != NULL)
4251 name = h->root.root.string;
4252 else
8da6118f 4253 {
c434dee6
AJ
4254 name = bfd_elf_string_from_elf_section (input_bfd,
4255 symtab_hdr->sh_link,
4256 sym->st_name);
4257 if (name == NULL)
b34976b6 4258 return FALSE;
c434dee6
AJ
4259 if (*name == '\0')
4260 name = bfd_section_name (input_bfd, sec);
4261 }
4262
4263 if (r == bfd_reloc_overflow)
4264 {
c434dee6 4265 if (! ((*info->callbacks->reloc_overflow)
dfeffb9f
L
4266 (info, (h ? &h->root : NULL), name, howto->name,
4267 (bfd_vma) 0, input_bfd, input_section,
4268 rel->r_offset)))
b34976b6 4269 return FALSE;
c434dee6
AJ
4270 }
4271 else
4272 {
4273 (*_bfd_error_handler)
bb95161d 4274 (_("%B(%A+0x%lx): reloc against `%s': error %d"),
d003868e 4275 input_bfd, input_section,
c434dee6 4276 (long) rel->r_offset, name, (int) r);
b34976b6 4277 return FALSE;
8da6118f
KH
4278 }
4279 }
8d88c4ca 4280 }
70256ad8 4281
b34976b6 4282 return TRUE;
70256ad8
AJ
4283}
4284
4285/* Finish up dynamic symbol handling. We set the contents of various
4286 dynamic sections here. */
4287
b34976b6 4288static bfd_boolean
351f65ca
L
4289elf_x86_64_finish_dynamic_symbol (bfd *output_bfd,
4290 struct bfd_link_info *info,
4291 struct elf_link_hash_entry *h,
220cf809 4292 Elf_Internal_Sym *sym ATTRIBUTE_UNUSED)
70256ad8 4293{
351f65ca 4294 struct elf_x86_64_link_hash_table *htab;
eed180f8
RM
4295 const struct elf_x86_64_backend_data *const abed
4296 = get_elf_x86_64_backend_data (output_bfd);
70256ad8 4297
351f65ca 4298 htab = elf_x86_64_hash_table (info);
4dfe6ac6
NC
4299 if (htab == NULL)
4300 return FALSE;
70256ad8
AJ
4301
4302 if (h->plt.offset != (bfd_vma) -1)
4303 {
70256ad8
AJ
4304 bfd_vma plt_index;
4305 bfd_vma got_offset;
4306 Elf_Internal_Rela rela;
947216bf 4307 bfd_byte *loc;
cbe950e9 4308 asection *plt, *gotplt, *relplt;
351f65ca 4309 const struct elf_backend_data *bed;
cbe950e9
L
4310
4311 /* When building a static executable, use .iplt, .igot.plt and
4312 .rela.iplt sections for STT_GNU_IFUNC symbols. */
6de2ae4a 4313 if (htab->elf.splt != NULL)
cbe950e9 4314 {
6de2ae4a
L
4315 plt = htab->elf.splt;
4316 gotplt = htab->elf.sgotplt;
4317 relplt = htab->elf.srelplt;
cbe950e9
L
4318 }
4319 else
4320 {
6de2ae4a
L
4321 plt = htab->elf.iplt;
4322 gotplt = htab->elf.igotplt;
4323 relplt = htab->elf.irelplt;
cbe950e9 4324 }
70256ad8
AJ
4325
4326 /* This symbol has an entry in the procedure linkage table. Set
407443a3 4327 it up. */
cbe950e9
L
4328 if ((h->dynindx == -1
4329 && !((h->forced_local || info->executable)
4330 && h->def_regular
4331 && h->type == STT_GNU_IFUNC))
4332 || plt == NULL
4333 || gotplt == NULL
4334 || relplt == NULL)
f6df62c8 4335 return FALSE;
70256ad8
AJ
4336
4337 /* Get the index in the procedure linkage table which
4338 corresponds to this symbol. This is the index of this symbol
4339 in all the symbols for which we are making plt entries. The
cbe950e9 4340 first entry in the procedure linkage table is reserved.
6bbec505 4341
cbe950e9 4342 Get the offset into the .got table of the entry that
407443a3 4343 corresponds to this function. Each .got entry is GOT_ENTRY_SIZE
cbe950e9
L
4344 bytes. The first three are reserved for the dynamic linker.
4345
4346 For static executables, we don't reserve anything. */
4347
6de2ae4a 4348 if (plt == htab->elf.splt)
cbe950e9 4349 {
eed180f8 4350 got_offset = h->plt.offset / abed->plt_entry_size - 1;
e1f98742 4351 got_offset = (got_offset + 3) * GOT_ENTRY_SIZE;
cbe950e9
L
4352 }
4353 else
4354 {
eed180f8 4355 got_offset = h->plt.offset / abed->plt_entry_size;
e1f98742 4356 got_offset = got_offset * GOT_ENTRY_SIZE;
cbe950e9 4357 }
70256ad8
AJ
4358
4359 /* Fill in the entry in the procedure linkage table. */
eed180f8
RM
4360 memcpy (plt->contents + h->plt.offset, abed->plt_entry,
4361 abed->plt_entry_size);
4362
4363 /* Insert the relocation positions of the plt section. */
4364
4365 /* Put offset the PC-relative instruction referring to the GOT entry,
4366 subtracting the size of that instruction. */
653165cc 4367 bfd_put_32 (output_bfd,
eed180f8
RM
4368 (gotplt->output_section->vma
4369 + gotplt->output_offset
4370 + got_offset
4371 - plt->output_section->vma
4372 - plt->output_offset
4373 - h->plt.offset
4374 - abed->plt_got_insn_size),
4375 plt->contents + h->plt.offset + abed->plt_got_offset);
cbe950e9 4376
653165cc 4377 /* Fill in the entry in the global offset table, initially this
eed180f8 4378 points to the second part of the PLT entry. */
cbe950e9
L
4379 bfd_put_64 (output_bfd, (plt->output_section->vma
4380 + plt->output_offset
eed180f8 4381 + h->plt.offset + abed->plt_lazy_offset),
cbe950e9 4382 gotplt->contents + got_offset);
70256ad8
AJ
4383
4384 /* Fill in the entry in the .rela.plt section. */
cbe950e9
L
4385 rela.r_offset = (gotplt->output_section->vma
4386 + gotplt->output_offset
70256ad8 4387 + got_offset);
cbe950e9
L
4388 if (h->dynindx == -1
4389 || ((info->executable
4390 || ELF_ST_VISIBILITY (h->other) != STV_DEFAULT)
4391 && h->def_regular
4392 && h->type == STT_GNU_IFUNC))
4393 {
4394 /* If an STT_GNU_IFUNC symbol is locally defined, generate
4395 R_X86_64_IRELATIVE instead of R_X86_64_JUMP_SLOT. */
351f65ca 4396 rela.r_info = htab->r_info (0, R_X86_64_IRELATIVE);
cbe950e9
L
4397 rela.r_addend = (h->root.u.def.value
4398 + h->root.u.def.section->output_section->vma
4399 + h->root.u.def.section->output_offset);
e1f98742
L
4400 /* R_X86_64_IRELATIVE comes last. */
4401 plt_index = htab->next_irelative_index--;
cbe950e9
L
4402 }
4403 else
4404 {
351f65ca 4405 rela.r_info = htab->r_info (h->dynindx, R_X86_64_JUMP_SLOT);
cbe950e9 4406 rela.r_addend = 0;
e1f98742
L
4407 plt_index = htab->next_jump_slot_index++;
4408 }
4409
4410 /* Don't fill PLT entry for static executables. */
4411 if (plt == htab->elf.splt)
4412 {
4413 /* Put relocation index. */
4414 bfd_put_32 (output_bfd, plt_index,
eed180f8 4415 plt->contents + h->plt.offset + abed->plt_reloc_offset);
e1f98742 4416 /* Put offset for jmp .PLT0. */
eed180f8
RM
4417 bfd_put_32 (output_bfd, - (h->plt.offset + abed->plt_plt_insn_end),
4418 plt->contents + h->plt.offset + abed->plt_plt_offset);
cbe950e9 4419 }
351f65ca
L
4420
4421 bed = get_elf_backend_data (output_bfd);
4422 loc = relplt->contents + plt_index * bed->s->sizeof_rela;
82e96e07 4423 bed->s->swap_reloca_out (output_bfd, &rela, loc);
70256ad8 4424
f5385ebf 4425 if (!h->def_regular)
70256ad8
AJ
4426 {
4427 /* Mark the symbol as undefined, rather than as defined in
47a9f7b3
JJ
4428 the .plt section. Leave the value if there were any
4429 relocations where pointer equality matters (this is a clue
c434dee6
AJ
4430 for the dynamic linker, to make function pointer
4431 comparisons work between an application and shared
47a9f7b3
JJ
4432 library), otherwise set it to zero. If a function is only
4433 called from a binary, there is no need to slow down
4434 shared libraries because of that. */
70256ad8 4435 sym->st_shndx = SHN_UNDEF;
f5385ebf 4436 if (!h->pointer_equality_needed)
47a9f7b3 4437 sym->st_value = 0;
70256ad8
AJ
4438 }
4439 }
4440
bffbf940 4441 if (h->got.offset != (bfd_vma) -1
351f65ca
L
4442 && ! GOT_TLS_GD_ANY_P (elf_x86_64_hash_entry (h)->tls_type)
4443 && elf_x86_64_hash_entry (h)->tls_type != GOT_TLS_IE)
053579d7 4444 {
053579d7
AJ
4445 Elf_Internal_Rela rela;
4446
4447 /* This symbol has an entry in the global offset table. Set it
bffbf940 4448 up. */
6de2ae4a 4449 if (htab->elf.sgot == NULL || htab->elf.srelgot == NULL)
c434dee6 4450 abort ();
053579d7 4451
6de2ae4a
L
4452 rela.r_offset = (htab->elf.sgot->output_section->vma
4453 + htab->elf.sgot->output_offset
dc810e39 4454 + (h->got.offset &~ (bfd_vma) 1));
053579d7
AJ
4455
4456 /* If this is a static link, or it is a -Bsymbolic link and the
4457 symbol is defined locally or was forced to be local because
4458 of a version file, we just want to emit a RELATIVE reloc.
4459 The entry in the global offset table will already have been
4460 initialized in the relocate_section function. */
710ab287 4461 if (h->def_regular
0018b0a3
L
4462 && h->type == STT_GNU_IFUNC)
4463 {
710ab287
L
4464 if (info->shared)
4465 {
4466 /* Generate R_X86_64_GLOB_DAT. */
4467 goto do_glob_dat;
4468 }
4469 else
4470 {
90d60710
L
4471 asection *plt;
4472
710ab287
L
4473 if (!h->pointer_equality_needed)
4474 abort ();
4475
4476 /* For non-shared object, we can't use .got.plt, which
4477 contains the real function addres if we need pointer
4478 equality. We load the GOT entry with the PLT entry. */
90d60710 4479 plt = htab->elf.splt ? htab->elf.splt : htab->elf.iplt;
710ab287
L
4480 bfd_put_64 (output_bfd, (plt->output_section->vma
4481 + plt->output_offset
4482 + h->plt.offset),
6de2ae4a 4483 htab->elf.sgot->contents + h->got.offset);
710ab287
L
4484 return TRUE;
4485 }
0018b0a3
L
4486 }
4487 else if (info->shared
4488 && SYMBOL_REFERENCES_LOCAL (info, h))
053579d7 4489 {
41bed6dd
L
4490 if (!h->def_regular)
4491 return FALSE;
cc78d0af 4492 BFD_ASSERT((h->got.offset & 1) != 0);
351f65ca 4493 rela.r_info = htab->r_info (0, R_X86_64_RELATIVE);
053579d7
AJ
4494 rela.r_addend = (h->root.u.def.value
4495 + h->root.u.def.section->output_section->vma
4496 + h->root.u.def.section->output_offset);
4497 }
4498 else
4499 {
4500 BFD_ASSERT((h->got.offset & 1) == 0);
710ab287 4501do_glob_dat:
c434dee6 4502 bfd_put_64 (output_bfd, (bfd_vma) 0,
6de2ae4a 4503 htab->elf.sgot->contents + h->got.offset);
351f65ca 4504 rela.r_info = htab->r_info (h->dynindx, R_X86_64_GLOB_DAT);
053579d7
AJ
4505 rela.r_addend = 0;
4506 }
4507
351f65ca 4508 elf_append_rela (output_bfd, htab->elf.srelgot, &rela);
053579d7
AJ
4509 }
4510
f5385ebf 4511 if (h->needs_copy)
70256ad8 4512 {
70256ad8
AJ
4513 Elf_Internal_Rela rela;
4514
4515 /* This symbol needs a copy reloc. Set it up. */
4516
c434dee6
AJ
4517 if (h->dynindx == -1
4518 || (h->root.type != bfd_link_hash_defined
4519 && h->root.type != bfd_link_hash_defweak)
4520 || htab->srelbss == NULL)
4521 abort ();
70256ad8
AJ
4522
4523 rela.r_offset = (h->root.u.def.value
4524 + h->root.u.def.section->output_section->vma
4525 + h->root.u.def.section->output_offset);
351f65ca 4526 rela.r_info = htab->r_info (h->dynindx, R_X86_64_COPY);
70256ad8 4527 rela.r_addend = 0;
351f65ca 4528 elf_append_rela (output_bfd, htab->srelbss, &rela);
70256ad8
AJ
4529 }
4530
b34976b6 4531 return TRUE;
70256ad8
AJ
4532}
4533
c25bc9fc
L
4534/* Finish up local dynamic symbol handling. We set the contents of
4535 various dynamic sections here. */
4536
4537static bfd_boolean
351f65ca 4538elf_x86_64_finish_local_dynamic_symbol (void **slot, void *inf)
c25bc9fc
L
4539{
4540 struct elf_link_hash_entry *h
4541 = (struct elf_link_hash_entry *) *slot;
4542 struct bfd_link_info *info
eed180f8 4543 = (struct bfd_link_info *) inf;
c25bc9fc 4544
351f65ca 4545 return elf_x86_64_finish_dynamic_symbol (info->output_bfd,
c25bc9fc
L
4546 info, h, NULL);
4547}
4548
c434dee6
AJ
4549/* Used to decide how to sort relocs in an optimal manner for the
4550 dynamic linker, before writing them out. */
4551
4552static enum elf_reloc_type_class
351f65ca 4553elf_x86_64_reloc_type_class (const Elf_Internal_Rela *rela)
c434dee6 4554{
351f65ca 4555 switch ((int) ELF32_R_TYPE (rela->r_info))
c434dee6
AJ
4556 {
4557 case R_X86_64_RELATIVE:
1da80baa 4558 case R_X86_64_RELATIVE64:
c434dee6
AJ
4559 return reloc_class_relative;
4560 case R_X86_64_JUMP_SLOT:
4561 return reloc_class_plt;
4562 case R_X86_64_COPY:
4563 return reloc_class_copy;
4564 default:
4565 return reloc_class_normal;
4566 }
4567}
4568
70256ad8
AJ
4569/* Finish up the dynamic sections. */
4570
b34976b6 4571static bfd_boolean
351f65ca
L
4572elf_x86_64_finish_dynamic_sections (bfd *output_bfd,
4573 struct bfd_link_info *info)
70256ad8 4574{
351f65ca 4575 struct elf_x86_64_link_hash_table *htab;
70256ad8
AJ
4576 bfd *dynobj;
4577 asection *sdyn;
eed180f8
RM
4578 const struct elf_x86_64_backend_data *const abed
4579 = get_elf_x86_64_backend_data (output_bfd);
70256ad8 4580
351f65ca 4581 htab = elf_x86_64_hash_table (info);
4dfe6ac6
NC
4582 if (htab == NULL)
4583 return FALSE;
4584
c434dee6 4585 dynobj = htab->elf.dynobj;
3d4d4302 4586 sdyn = bfd_get_linker_section (dynobj, ".dynamic");
70256ad8 4587
c434dee6 4588 if (htab->elf.dynamic_sections_created)
70256ad8 4589 {
82e96e07
L
4590 bfd_byte *dyncon, *dynconend;
4591 const struct elf_backend_data *bed;
4592 bfd_size_type sizeof_dyn;
70256ad8 4593
6de2ae4a 4594 if (sdyn == NULL || htab->elf.sgot == NULL)
c434dee6 4595 abort ();
70256ad8 4596
82e96e07
L
4597 bed = get_elf_backend_data (dynobj);
4598 sizeof_dyn = bed->s->sizeof_dyn;
4599 dyncon = sdyn->contents;
4600 dynconend = sdyn->contents + sdyn->size;
4601 for (; dyncon < dynconend; dyncon += sizeof_dyn)
70256ad8
AJ
4602 {
4603 Elf_Internal_Dyn dyn;
70256ad8
AJ
4604 asection *s;
4605
82e96e07 4606 (*bed->s->swap_dyn_in) (dynobj, dyncon, &dyn);
70256ad8
AJ
4607
4608 switch (dyn.d_tag)
4609 {
4610 default:
053579d7 4611 continue;
70256ad8
AJ
4612
4613 case DT_PLTGOT:
6de2ae4a 4614 s = htab->elf.sgotplt;
8c37241b 4615 dyn.d_un.d_ptr = s->output_section->vma + s->output_offset;
c434dee6 4616 break;
70256ad8
AJ
4617
4618 case DT_JMPREL:
6de2ae4a 4619 dyn.d_un.d_ptr = htab->elf.srelplt->output_section->vma;
c434dee6 4620 break;
70256ad8 4621
c434dee6 4622 case DT_PLTRELSZ:
6de2ae4a 4623 s = htab->elf.srelplt->output_section;
eea6121a 4624 dyn.d_un.d_val = s->size;
70256ad8
AJ
4625 break;
4626
4627 case DT_RELASZ:
c434dee6
AJ
4628 /* The procedure linkage table relocs (DT_JMPREL) should
4629 not be included in the overall relocs (DT_RELA).
4630 Therefore, we override the DT_RELASZ entry here to
4631 make it not include the JMPREL relocs. Since the
4632 linker script arranges for .rela.plt to follow all
4633 other relocation sections, we don't have to worry
4634 about changing the DT_RELA entry. */
6de2ae4a 4635 if (htab->elf.srelplt != NULL)
70256ad8 4636 {
6de2ae4a 4637 s = htab->elf.srelplt->output_section;
eea6121a 4638 dyn.d_un.d_val -= s->size;
70256ad8
AJ
4639 }
4640 break;
67a4f2b7
AO
4641
4642 case DT_TLSDESC_PLT:
6de2ae4a 4643 s = htab->elf.splt;
67a4f2b7
AO
4644 dyn.d_un.d_ptr = s->output_section->vma + s->output_offset
4645 + htab->tlsdesc_plt;
4646 break;
4647
4648 case DT_TLSDESC_GOT:
6de2ae4a 4649 s = htab->elf.sgot;
67a4f2b7
AO
4650 dyn.d_un.d_ptr = s->output_section->vma + s->output_offset
4651 + htab->tlsdesc_got;
4652 break;
70256ad8 4653 }
c434dee6 4654
82e96e07 4655 (*bed->s->swap_dyn_out) (output_bfd, &dyn, dyncon);
70256ad8
AJ
4656 }
4657
c434dee6 4658 /* Fill in the special first entry in the procedure linkage table. */
6de2ae4a 4659 if (htab->elf.splt && htab->elf.splt->size > 0)
70256ad8 4660 {
653165cc 4661 /* Fill in the first entry in the procedure linkage table. */
eed180f8
RM
4662 memcpy (htab->elf.splt->contents,
4663 abed->plt0_entry, abed->plt_entry_size);
653165cc
AJ
4664 /* Add offset for pushq GOT+8(%rip), since the instruction
4665 uses 6 bytes subtract this value. */
4666 bfd_put_32 (output_bfd,
6de2ae4a
L
4667 (htab->elf.sgotplt->output_section->vma
4668 + htab->elf.sgotplt->output_offset
653165cc 4669 + 8
6de2ae4a
L
4670 - htab->elf.splt->output_section->vma
4671 - htab->elf.splt->output_offset
653165cc 4672 - 6),
eed180f8
RM
4673 htab->elf.splt->contents + abed->plt0_got1_offset);
4674 /* Add offset for the PC-relative instruction accessing GOT+16,
4675 subtracting the offset to the end of that instruction. */
653165cc 4676 bfd_put_32 (output_bfd,
6de2ae4a
L
4677 (htab->elf.sgotplt->output_section->vma
4678 + htab->elf.sgotplt->output_offset
653165cc 4679 + 16
6de2ae4a
L
4680 - htab->elf.splt->output_section->vma
4681 - htab->elf.splt->output_offset
eed180f8
RM
4682 - abed->plt0_got2_insn_end),
4683 htab->elf.splt->contents + abed->plt0_got2_offset);
653165cc 4684
eed180f8
RM
4685 elf_section_data (htab->elf.splt->output_section)
4686 ->this_hdr.sh_entsize = abed->plt_entry_size;
67a4f2b7
AO
4687
4688 if (htab->tlsdesc_plt)
4689 {
4690 bfd_put_64 (output_bfd, (bfd_vma) 0,
6de2ae4a 4691 htab->elf.sgot->contents + htab->tlsdesc_got);
67a4f2b7 4692
6de2ae4a 4693 memcpy (htab->elf.splt->contents + htab->tlsdesc_plt,
eed180f8 4694 abed->plt0_entry, abed->plt_entry_size);
67a4f2b7
AO
4695
4696 /* Add offset for pushq GOT+8(%rip), since the
4697 instruction uses 6 bytes subtract this value. */
4698 bfd_put_32 (output_bfd,
6de2ae4a
L
4699 (htab->elf.sgotplt->output_section->vma
4700 + htab->elf.sgotplt->output_offset
67a4f2b7 4701 + 8
6de2ae4a
L
4702 - htab->elf.splt->output_section->vma
4703 - htab->elf.splt->output_offset
67a4f2b7
AO
4704 - htab->tlsdesc_plt
4705 - 6),
eed180f8
RM
4706 htab->elf.splt->contents
4707 + htab->tlsdesc_plt + abed->plt0_got1_offset);
4708 /* Add offset for the PC-relative instruction accessing GOT+TDG,
4709 where TGD stands for htab->tlsdesc_got, subtracting the offset
4710 to the end of that instruction. */
67a4f2b7 4711 bfd_put_32 (output_bfd,
6de2ae4a
L
4712 (htab->elf.sgot->output_section->vma
4713 + htab->elf.sgot->output_offset
67a4f2b7 4714 + htab->tlsdesc_got
6de2ae4a
L
4715 - htab->elf.splt->output_section->vma
4716 - htab->elf.splt->output_offset
67a4f2b7 4717 - htab->tlsdesc_plt
eed180f8
RM
4718 - abed->plt0_got2_insn_end),
4719 htab->elf.splt->contents
4720 + htab->tlsdesc_plt + abed->plt0_got2_offset);
67a4f2b7 4721 }
70256ad8 4722 }
70256ad8
AJ
4723 }
4724
6de2ae4a 4725 if (htab->elf.sgotplt)
70256ad8 4726 {
56d4289c
L
4727 if (bfd_is_abs_section (htab->elf.sgotplt->output_section))
4728 {
4729 (*_bfd_error_handler)
4730 (_("discarded output section: `%A'"), htab->elf.sgotplt);
4731 return FALSE;
4732 }
4733
c434dee6 4734 /* Fill in the first three entries in the global offset table. */
6de2ae4a 4735 if (htab->elf.sgotplt->size > 0)
c434dee6
AJ
4736 {
4737 /* Set the first entry in the global offset table to the address of
4738 the dynamic section. */
4739 if (sdyn == NULL)
6de2ae4a 4740 bfd_put_64 (output_bfd, (bfd_vma) 0, htab->elf.sgotplt->contents);
c434dee6
AJ
4741 else
4742 bfd_put_64 (output_bfd,
4743 sdyn->output_section->vma + sdyn->output_offset,
6de2ae4a 4744 htab->elf.sgotplt->contents);
c434dee6 4745 /* Write GOT[1] and GOT[2], needed for the dynamic linker. */
6de2ae4a
L
4746 bfd_put_64 (output_bfd, (bfd_vma) 0, htab->elf.sgotplt->contents + GOT_ENTRY_SIZE);
4747 bfd_put_64 (output_bfd, (bfd_vma) 0, htab->elf.sgotplt->contents + GOT_ENTRY_SIZE*2);
c434dee6 4748 }
70256ad8 4749
6de2ae4a 4750 elf_section_data (htab->elf.sgotplt->output_section)->this_hdr.sh_entsize =
c434dee6
AJ
4751 GOT_ENTRY_SIZE;
4752 }
70256ad8 4753
e41b3a13 4754 /* Adjust .eh_frame for .plt section. */
9a2a56cc
AM
4755 if (htab->plt_eh_frame != NULL
4756 && htab->plt_eh_frame->contents != NULL)
e41b3a13
JJ
4757 {
4758 if (htab->elf.splt != NULL
4759 && htab->elf.splt->size != 0
4760 && (htab->elf.splt->flags & SEC_EXCLUDE) == 0
4761 && htab->elf.splt->output_section != NULL
4762 && htab->plt_eh_frame->output_section != NULL)
4763 {
4764 bfd_vma plt_start = htab->elf.splt->output_section->vma;
4765 bfd_vma eh_frame_start = htab->plt_eh_frame->output_section->vma
4766 + htab->plt_eh_frame->output_offset
4767 + PLT_FDE_START_OFFSET;
4768 bfd_put_signed_32 (dynobj, plt_start - eh_frame_start,
4769 htab->plt_eh_frame->contents
4770 + PLT_FDE_START_OFFSET);
4771 }
dbaa2011 4772 if (htab->plt_eh_frame->sec_info_type == SEC_INFO_TYPE_EH_FRAME)
e41b3a13
JJ
4773 {
4774 if (! _bfd_elf_write_section_eh_frame (output_bfd, info,
4775 htab->plt_eh_frame,
4776 htab->plt_eh_frame->contents))
4777 return FALSE;
4778 }
4779 }
4780
6de2ae4a
L
4781 if (htab->elf.sgot && htab->elf.sgot->size > 0)
4782 elf_section_data (htab->elf.sgot->output_section)->this_hdr.sh_entsize
8c37241b
JJ
4783 = GOT_ENTRY_SIZE;
4784
c25bc9fc
L
4785 /* Fill PLT and GOT entries for local STT_GNU_IFUNC symbols. */
4786 htab_traverse (htab->loc_hash_table,
351f65ca 4787 elf_x86_64_finish_local_dynamic_symbol,
c25bc9fc
L
4788 info);
4789
b34976b6 4790 return TRUE;
8d88c4ca
NC
4791}
4792
4c45e5c9
JJ
4793/* Return address for Ith PLT stub in section PLT, for relocation REL
4794 or (bfd_vma) -1 if it should not be included. */
4795
4796static bfd_vma
351f65ca
L
4797elf_x86_64_plt_sym_val (bfd_vma i, const asection *plt,
4798 const arelent *rel ATTRIBUTE_UNUSED)
4c45e5c9 4799{
eed180f8 4800 return plt->vma + (i + 1) * GET_PLT_ENTRY_SIZE (plt->owner);
4c45e5c9 4801}
8df9fc9d 4802
d2b2c203
DJ
4803/* Handle an x86-64 specific section when reading an object file. This
4804 is called when elfcode.h finds a section with an unknown type. */
4805
4806static bfd_boolean
351f65ca 4807elf_x86_64_section_from_shdr (bfd *abfd,
6dc132d9
L
4808 Elf_Internal_Shdr *hdr,
4809 const char *name,
4810 int shindex)
d2b2c203
DJ
4811{
4812 if (hdr->sh_type != SHT_X86_64_UNWIND)
4813 return FALSE;
4814
6dc132d9 4815 if (! _bfd_elf_make_section_from_shdr (abfd, hdr, name, shindex))
d2b2c203
DJ
4816 return FALSE;
4817
4818 return TRUE;
4819}
4820
3b22753a
L
4821/* Hook called by the linker routine which adds symbols from an object
4822 file. We use it to put SHN_X86_64_LCOMMON items in .lbss, instead
4823 of .bss. */
4824
4825static bfd_boolean
351f65ca
L
4826elf_x86_64_add_symbol_hook (bfd *abfd,
4827 struct bfd_link_info *info,
4828 Elf_Internal_Sym *sym,
4829 const char **namep ATTRIBUTE_UNUSED,
4830 flagword *flagsp ATTRIBUTE_UNUSED,
4831 asection **secp,
4832 bfd_vma *valp)
3b22753a
L
4833{
4834 asection *lcomm;
4835
4836 switch (sym->st_shndx)
4837 {
4838 case SHN_X86_64_LCOMMON:
4839 lcomm = bfd_get_section_by_name (abfd, "LARGE_COMMON");
4840 if (lcomm == NULL)
4841 {
4842 lcomm = bfd_make_section_with_flags (abfd,
4843 "LARGE_COMMON",
4844 (SEC_ALLOC
4845 | SEC_IS_COMMON
4846 | SEC_LINKER_CREATED));
4847 if (lcomm == NULL)
4848 return FALSE;
4849 elf_section_flags (lcomm) |= SHF_X86_64_LARGE;
4850 }
4851 *secp = lcomm;
4852 *valp = sym->st_size;
c35bdf6e 4853 return TRUE;
3b22753a 4854 }
d8045f23 4855
c16153ae 4856 if ((abfd->flags & DYNAMIC) == 0
f64b2e8d
NC
4857 && (ELF_ST_TYPE (sym->st_info) == STT_GNU_IFUNC
4858 || ELF_ST_BIND (sym->st_info) == STB_GNU_UNIQUE))
4859 elf_tdata (info->output_bfd)->has_gnu_symbols = TRUE;
d8045f23 4860
3b22753a
L
4861 return TRUE;
4862}
4863
4864
4865/* Given a BFD section, try to locate the corresponding ELF section
4866 index. */
4867
4868static bfd_boolean
351f65ca
L
4869elf_x86_64_elf_section_from_bfd_section (bfd *abfd ATTRIBUTE_UNUSED,
4870 asection *sec, int *index_return)
3b22753a
L
4871{
4872 if (sec == &_bfd_elf_large_com_section)
4873 {
91d6fa6a 4874 *index_return = SHN_X86_64_LCOMMON;
3b22753a
L
4875 return TRUE;
4876 }
4877 return FALSE;
4878}
4879
4880/* Process a symbol. */
4881
4882static void
351f65ca
L
4883elf_x86_64_symbol_processing (bfd *abfd ATTRIBUTE_UNUSED,
4884 asymbol *asym)
3b22753a
L
4885{
4886 elf_symbol_type *elfsym = (elf_symbol_type *) asym;
4887
4888 switch (elfsym->internal_elf_sym.st_shndx)
4889 {
4890 case SHN_X86_64_LCOMMON:
4891 asym->section = &_bfd_elf_large_com_section;
4892 asym->value = elfsym->internal_elf_sym.st_size;
4893 /* Common symbol doesn't set BSF_GLOBAL. */
4894 asym->flags &= ~BSF_GLOBAL;
4895 break;
4896 }
4897}
4898
4899static bfd_boolean
351f65ca 4900elf_x86_64_common_definition (Elf_Internal_Sym *sym)
3b22753a
L
4901{
4902 return (sym->st_shndx == SHN_COMMON
4903 || sym->st_shndx == SHN_X86_64_LCOMMON);
4904}
4905
4906static unsigned int
351f65ca 4907elf_x86_64_common_section_index (asection *sec)
3b22753a
L
4908{
4909 if ((elf_section_flags (sec) & SHF_X86_64_LARGE) == 0)
4910 return SHN_COMMON;
4911 else
4912 return SHN_X86_64_LCOMMON;
4913}
4914
4915static asection *
351f65ca 4916elf_x86_64_common_section (asection *sec)
3b22753a
L
4917{
4918 if ((elf_section_flags (sec) & SHF_X86_64_LARGE) == 0)
4919 return bfd_com_section_ptr;
4920 else
4921 return &_bfd_elf_large_com_section;
4922}
4923
4924static bfd_boolean
351f65ca
L
4925elf_x86_64_merge_symbol (struct bfd_link_info *info ATTRIBUTE_UNUSED,
4926 struct elf_link_hash_entry **sym_hash ATTRIBUTE_UNUSED,
4927 struct elf_link_hash_entry *h,
4928 Elf_Internal_Sym *sym,
4929 asection **psec,
4930 bfd_vma *pvalue ATTRIBUTE_UNUSED,
4931 unsigned int *pold_alignment ATTRIBUTE_UNUSED,
4932 bfd_boolean *skip ATTRIBUTE_UNUSED,
4933 bfd_boolean *override ATTRIBUTE_UNUSED,
4934 bfd_boolean *type_change_ok ATTRIBUTE_UNUSED,
4935 bfd_boolean *size_change_ok ATTRIBUTE_UNUSED,
71e7aa7d
L
4936 bfd_boolean *newdyn ATTRIBUTE_UNUSED,
4937 bfd_boolean *newdef,
351f65ca
L
4938 bfd_boolean *newdyncommon ATTRIBUTE_UNUSED,
4939 bfd_boolean *newweak ATTRIBUTE_UNUSED,
4940 bfd *abfd ATTRIBUTE_UNUSED,
4941 asection **sec,
71e7aa7d
L
4942 bfd_boolean *olddyn ATTRIBUTE_UNUSED,
4943 bfd_boolean *olddef,
351f65ca
L
4944 bfd_boolean *olddyncommon ATTRIBUTE_UNUSED,
4945 bfd_boolean *oldweak ATTRIBUTE_UNUSED,
4946 bfd *oldbfd,
4947 asection **oldsec)
3b22753a
L
4948{
4949 /* A normal common symbol and a large common symbol result in a
00492999
L
4950 normal common symbol. We turn the large common symbol into a
4951 normal one. */
71e7aa7d 4952 if (!*olddef
3b22753a 4953 && h->root.type == bfd_link_hash_common
71e7aa7d 4954 && !*newdef
3b22753a 4955 && bfd_is_com_section (*sec)
00492999 4956 && *oldsec != *sec)
3b22753a 4957 {
00492999
L
4958 if (sym->st_shndx == SHN_COMMON
4959 && (elf_section_flags (*oldsec) & SHF_X86_64_LARGE) != 0)
4960 {
4961 h->root.u.c.p->section
4962 = bfd_make_section_old_way (oldbfd, "COMMON");
4963 h->root.u.c.p->section->flags = SEC_ALLOC;
4964 }
4965 else if (sym->st_shndx == SHN_X86_64_LCOMMON
4966 && (elf_section_flags (*oldsec) & SHF_X86_64_LARGE) == 0)
9a2e389a 4967 *psec = *sec = bfd_com_section_ptr;
3b22753a
L
4968 }
4969
4970 return TRUE;
4971}
4972
4973static int
351f65ca
L
4974elf_x86_64_additional_program_headers (bfd *abfd,
4975 struct bfd_link_info *info ATTRIBUTE_UNUSED)
3b22753a
L
4976{
4977 asection *s;
9a2e389a 4978 int count = 0;
3b22753a
L
4979
4980 /* Check to see if we need a large readonly segment. */
4981 s = bfd_get_section_by_name (abfd, ".lrodata");
4982 if (s && (s->flags & SEC_LOAD))
4983 count++;
4984
4985 /* Check to see if we need a large data segment. Since .lbss sections
4986 is placed right after the .bss section, there should be no need for
4987 a large data segment just because of .lbss. */
4988 s = bfd_get_section_by_name (abfd, ".ldata");
4989 if (s && (s->flags & SEC_LOAD))
4990 count++;
4991
4992 return count;
4993}
4994
fdc90cb4
JJ
4995/* Return TRUE if symbol should be hashed in the `.gnu.hash' section. */
4996
4997static bfd_boolean
351f65ca 4998elf_x86_64_hash_symbol (struct elf_link_hash_entry *h)
fdc90cb4
JJ
4999{
5000 if (h->plt.offset != (bfd_vma) -1
5001 && !h->def_regular
5002 && !h->pointer_equality_needed)
5003 return FALSE;
5004
5005 return _bfd_elf_hash_symbol (h);
5006}
5007
c543bf9a
L
5008/* Return TRUE iff relocations for INPUT are compatible with OUTPUT. */
5009
5010static bfd_boolean
5011elf_x86_64_relocs_compatible (const bfd_target *input,
5012 const bfd_target *output)
5013{
5014 return ((xvec_get_elf_backend_data (input)->s->elfclass
5015 == xvec_get_elf_backend_data (output)->s->elfclass)
5016 && _bfd_elf_relocs_compatible (input, output));
5017}
5018
9a2e389a 5019static const struct bfd_elf_special_section
351f65ca 5020 elf_x86_64_special_sections[]=
3b22753a 5021{
0112cd26
NC
5022 { STRING_COMMA_LEN (".gnu.linkonce.lb"), -2, SHT_NOBITS, SHF_ALLOC + SHF_WRITE + SHF_X86_64_LARGE},
5023 { STRING_COMMA_LEN (".gnu.linkonce.lr"), -2, SHT_PROGBITS, SHF_ALLOC + SHF_X86_64_LARGE},
5024 { STRING_COMMA_LEN (".gnu.linkonce.lt"), -2, SHT_PROGBITS, SHF_ALLOC + SHF_EXECINSTR + SHF_X86_64_LARGE},
5025 { STRING_COMMA_LEN (".lbss"), -2, SHT_NOBITS, SHF_ALLOC + SHF_WRITE + SHF_X86_64_LARGE},
5026 { STRING_COMMA_LEN (".ldata"), -2, SHT_PROGBITS, SHF_ALLOC + SHF_WRITE + SHF_X86_64_LARGE},
5027 { STRING_COMMA_LEN (".lrodata"), -2, SHT_PROGBITS, SHF_ALLOC + SHF_X86_64_LARGE},
5028 { NULL, 0, 0, 0, 0 }
3b22753a
L
5029};
5030
70256ad8
AJ
5031#define TARGET_LITTLE_SYM bfd_elf64_x86_64_vec
5032#define TARGET_LITTLE_NAME "elf64-x86-64"
5033#define ELF_ARCH bfd_arch_i386
ae95ffa6 5034#define ELF_TARGET_ID X86_64_ELF_DATA
70256ad8 5035#define ELF_MACHINE_CODE EM_X86_64
f7661549 5036#define ELF_MAXPAGESIZE 0x200000
2043964e 5037#define ELF_MINPAGESIZE 0x1000
24718e3b 5038#define ELF_COMMONPAGESIZE 0x1000
70256ad8
AJ
5039
5040#define elf_backend_can_gc_sections 1
51b64d56 5041#define elf_backend_can_refcount 1
70256ad8
AJ
5042#define elf_backend_want_got_plt 1
5043#define elf_backend_plt_readonly 1
5044#define elf_backend_want_plt_sym 0
5045#define elf_backend_got_header_size (GOT_ENTRY_SIZE*3)
b491616a 5046#define elf_backend_rela_normal 1
e41b3a13 5047#define elf_backend_plt_alignment 4
70256ad8 5048
351f65ca 5049#define elf_info_to_howto elf_x86_64_info_to_howto
70256ad8 5050
70256ad8 5051#define bfd_elf64_bfd_link_hash_table_create \
351f65ca 5052 elf_x86_64_link_hash_table_create
c25bc9fc 5053#define bfd_elf64_bfd_link_hash_table_free \
351f65ca
L
5054 elf_x86_64_link_hash_table_free
5055#define bfd_elf64_bfd_reloc_type_lookup elf_x86_64_reloc_type_lookup
157090f7 5056#define bfd_elf64_bfd_reloc_name_lookup \
351f65ca 5057 elf_x86_64_reloc_name_lookup
70256ad8 5058
351f65ca 5059#define elf_backend_adjust_dynamic_symbol elf_x86_64_adjust_dynamic_symbol
c543bf9a 5060#define elf_backend_relocs_compatible elf_x86_64_relocs_compatible
351f65ca
L
5061#define elf_backend_check_relocs elf_x86_64_check_relocs
5062#define elf_backend_copy_indirect_symbol elf_x86_64_copy_indirect_symbol
5063#define elf_backend_create_dynamic_sections elf_x86_64_create_dynamic_sections
5064#define elf_backend_finish_dynamic_sections elf_x86_64_finish_dynamic_sections
5065#define elf_backend_finish_dynamic_symbol elf_x86_64_finish_dynamic_symbol
5066#define elf_backend_gc_mark_hook elf_x86_64_gc_mark_hook
5067#define elf_backend_gc_sweep_hook elf_x86_64_gc_sweep_hook
5068#define elf_backend_grok_prstatus elf_x86_64_grok_prstatus
5069#define elf_backend_grok_psinfo elf_x86_64_grok_psinfo
8fd79e71
L
5070#ifdef CORE_HEADER
5071#define elf_backend_write_core_note elf_x86_64_write_core_note
5072#endif
351f65ca
L
5073#define elf_backend_reloc_type_class elf_x86_64_reloc_type_class
5074#define elf_backend_relocate_section elf_x86_64_relocate_section
5075#define elf_backend_size_dynamic_sections elf_x86_64_size_dynamic_sections
5076#define elf_backend_always_size_sections elf_x86_64_always_size_sections
74541ad4 5077#define elf_backend_init_index_section _bfd_elf_init_1_index_section
351f65ca 5078#define elf_backend_plt_sym_val elf_x86_64_plt_sym_val
407443a3 5079#define elf_backend_object_p elf64_x86_64_elf_object_p
351f65ca 5080#define bfd_elf64_mkobject elf_x86_64_mkobject
8d88c4ca 5081
d2b2c203 5082#define elf_backend_section_from_shdr \
351f65ca 5083 elf_x86_64_section_from_shdr
d2b2c203 5084
3b22753a 5085#define elf_backend_section_from_bfd_section \
351f65ca 5086 elf_x86_64_elf_section_from_bfd_section
3b22753a 5087#define elf_backend_add_symbol_hook \
351f65ca 5088 elf_x86_64_add_symbol_hook
3b22753a 5089#define elf_backend_symbol_processing \
351f65ca 5090 elf_x86_64_symbol_processing
3b22753a 5091#define elf_backend_common_section_index \
351f65ca 5092 elf_x86_64_common_section_index
3b22753a 5093#define elf_backend_common_section \
351f65ca 5094 elf_x86_64_common_section
3b22753a 5095#define elf_backend_common_definition \
351f65ca 5096 elf_x86_64_common_definition
3b22753a 5097#define elf_backend_merge_symbol \
351f65ca 5098 elf_x86_64_merge_symbol
3b22753a 5099#define elf_backend_special_sections \
351f65ca 5100 elf_x86_64_special_sections
3b22753a 5101#define elf_backend_additional_program_headers \
351f65ca 5102 elf_x86_64_additional_program_headers
fdc90cb4 5103#define elf_backend_hash_symbol \
351f65ca 5104 elf_x86_64_hash_symbol
3b22753a 5105
d8045f23
NC
5106#define elf_backend_post_process_headers _bfd_elf_set_osabi
5107
8d88c4ca 5108#include "elf64-target.h"
9d7cbccd
NC
5109
5110/* FreeBSD support. */
5111
5112#undef TARGET_LITTLE_SYM
5113#define TARGET_LITTLE_SYM bfd_elf64_x86_64_freebsd_vec
5114#undef TARGET_LITTLE_NAME
5115#define TARGET_LITTLE_NAME "elf64-x86-64-freebsd"
5116
d1036acb
L
5117#undef ELF_OSABI
5118#define ELF_OSABI ELFOSABI_FREEBSD
9d7cbccd 5119
9d7cbccd
NC
5120#undef elf64_bed
5121#define elf64_bed elf64_x86_64_fbsd_bed
5122
5123#include "elf64-target.h"
8a9036a4 5124
a6cc6b3b
RO
5125/* Solaris 2 support. */
5126
5127#undef TARGET_LITTLE_SYM
5128#define TARGET_LITTLE_SYM bfd_elf64_x86_64_sol2_vec
5129#undef TARGET_LITTLE_NAME
5130#define TARGET_LITTLE_NAME "elf64-x86-64-sol2"
5131
5132/* Restore default: we cannot use ELFOSABI_SOLARIS, otherwise ELFOSABI_NONE
5133 objects won't be recognized. */
5134#undef ELF_OSABI
5135
5136#undef elf64_bed
5137#define elf64_bed elf64_x86_64_sol2_bed
5138
7dc98aea
RO
5139/* The 64-bit static TLS arena size is rounded to the nearest 16-byte
5140 boundary. */
5141#undef elf_backend_static_tls_alignment
5142#define elf_backend_static_tls_alignment 16
5143
a6cc6b3b
RO
5144/* The Solaris 2 ABI requires a plt symbol on all platforms.
5145
5146 Cf. Linker and Libraries Guide, Ch. 2, Link-Editor, Generating the Output
5147 File, p.63. */
5148#undef elf_backend_want_plt_sym
5149#define elf_backend_want_plt_sym 1
5150
5151#include "elf64-target.h"
5152
8059fb19
RM
5153/* Native Client support. */
5154
5155#undef TARGET_LITTLE_SYM
5156#define TARGET_LITTLE_SYM bfd_elf64_x86_64_nacl_vec
5157#undef TARGET_LITTLE_NAME
5158#define TARGET_LITTLE_NAME "elf64-x86-64-nacl"
5159#undef elf64_bed
5160#define elf64_bed elf64_x86_64_nacl_bed
5161
5162#undef ELF_MAXPAGESIZE
5163#undef ELF_MINPAGESIZE
5164#undef ELF_COMMONPAGESIZE
5165#define ELF_MAXPAGESIZE 0x10000
5166#define ELF_MINPAGESIZE 0x10000
5167#define ELF_COMMONPAGESIZE 0x10000
5168
5169/* Restore defaults. */
5170#undef ELF_OSABI
5171#undef elf_backend_static_tls_alignment
5172#undef elf_backend_want_plt_sym
5173#define elf_backend_want_plt_sym 0
5174
5175/* NaCl uses substantially different PLT entries for the same effects. */
5176
5177#undef elf_backend_plt_alignment
5178#define elf_backend_plt_alignment 5
5179#define NACL_PLT_ENTRY_SIZE 64
5180#define NACLMASK 0xe0 /* 32-byte alignment mask. */
5181
5182static const bfd_byte elf_x86_64_nacl_plt0_entry[NACL_PLT_ENTRY_SIZE] =
5183 {
5184 0xff, 0x35, 8, 0, 0, 0, /* pushq GOT+8(%rip) */
5185 0x4c, 0x8b, 0x1d, 16, 0, 0, 0, /* mov GOT+16(%rip), %r11 */
5186 0x41, 0x83, 0xe3, NACLMASK, /* and $-32, %r11d */
5187 0x4d, 0x01, 0xfb, /* add %r15, %r11 */
5188 0x41, 0xff, 0xe3, /* jmpq *%r11 */
5189
ea2d813e
RM
5190 /* 9-byte nop sequence to pad out to the next 32-byte boundary. */
5191 0x2e, 0x0f, 0x1f, 0x84, 0, 0, 0, 0, 0, /* nopl %cs:0x0(%rax,%rax,1) */
5192
5193 /* 32 bytes of nop to pad out to the standard size. */
8059fb19
RM
5194 0x66, 0x66, 0x66, 0x66, 0x66, 0x66, /* excess data32 prefixes */
5195 0x2e, 0x0f, 0x1f, 0x84, 0, 0, 0, 0, 0, /* nopw %cs:0x0(%rax,%rax,1) */
5196 0x66, 0x66, 0x66, 0x66, 0x66, 0x66, /* excess data32 prefixes */
5197 0x2e, 0x0f, 0x1f, 0x84, 0, 0, 0, 0, 0, /* nopw %cs:0x0(%rax,%rax,1) */
ea2d813e
RM
5198 0x66, /* excess data32 prefix */
5199 0x90 /* nop */
8059fb19
RM
5200 };
5201
5202static const bfd_byte elf_x86_64_nacl_plt_entry[NACL_PLT_ENTRY_SIZE] =
5203 {
5204 0x4c, 0x8b, 0x1d, 0, 0, 0, 0, /* mov name@GOTPCREL(%rip),%r11 */
5205 0x41, 0x83, 0xe3, NACLMASK, /* and $-32, %r11d */
5206 0x4d, 0x01, 0xfb, /* add %r15, %r11 */
5207 0x41, 0xff, 0xe3, /* jmpq *%r11 */
5208
5209 /* 15-byte nop sequence to pad out to the next 32-byte boundary. */
5210 0x66, 0x66, 0x66, 0x66, 0x66, 0x66, /* excess data32 prefixes */
5211 0x2e, 0x0f, 0x1f, 0x84, 0, 0, 0, 0, 0, /* nopw %cs:0x0(%rax,%rax,1) */
5212
5213 /* Lazy GOT entries point here (32-byte aligned). */
5214 0x68, /* pushq immediate */
5215 0, 0, 0, 0, /* replaced with index into relocation table. */
5216 0xe9, /* jmp relative */
5217 0, 0, 0, 0, /* replaced with offset to start of .plt0. */
5218
5219 /* 22 bytes of nop to pad out to the standard size. */
5220 0x66, 0x66, 0x66, 0x66, 0x66, 0x66, /* excess data32 prefixes */
5221 0x2e, 0x0f, 0x1f, 0x84, 0, 0, 0, 0, 0, /* nopw %cs:0x0(%rax,%rax,1) */
5222 0x0f, 0x1f, 0x80, 0, 0, 0, 0, /* nopl 0x0(%rax) */
5223 };
5224
5225/* .eh_frame covering the .plt section. */
5226
5227static const bfd_byte elf_x86_64_nacl_eh_frame_plt[] =
5228 {
5229#if (PLT_CIE_LENGTH != 20 \
5230 || PLT_FDE_LENGTH != 36 \
5231 || PLT_FDE_START_OFFSET != 4 + PLT_CIE_LENGTH + 8 \
5232 || PLT_FDE_LEN_OFFSET != 4 + PLT_CIE_LENGTH + 12)
5233# error "Need elf_x86_64_backend_data parameters for eh_frame_plt offsets!"
5234#endif
5235 PLT_CIE_LENGTH, 0, 0, 0, /* CIE length */
5236 0, 0, 0, 0, /* CIE ID */
5237 1, /* CIE version */
5238 'z', 'R', 0, /* Augmentation string */
5239 1, /* Code alignment factor */
5240 0x78, /* Data alignment factor */
5241 16, /* Return address column */
5242 1, /* Augmentation size */
5243 DW_EH_PE_pcrel | DW_EH_PE_sdata4, /* FDE encoding */
5244 DW_CFA_def_cfa, 7, 8, /* DW_CFA_def_cfa: r7 (rsp) ofs 8 */
5245 DW_CFA_offset + 16, 1, /* DW_CFA_offset: r16 (rip) at cfa-8 */
5246 DW_CFA_nop, DW_CFA_nop,
5247
5248 PLT_FDE_LENGTH, 0, 0, 0, /* FDE length */
5249 PLT_CIE_LENGTH + 8, 0, 0, 0,/* CIE pointer */
5250 0, 0, 0, 0, /* R_X86_64_PC32 .plt goes here */
5251 0, 0, 0, 0, /* .plt size goes here */
5252 0, /* Augmentation size */
5253 DW_CFA_def_cfa_offset, 16, /* DW_CFA_def_cfa_offset: 16 */
5254 DW_CFA_advance_loc + 6, /* DW_CFA_advance_loc: 6 to __PLT__+6 */
5255 DW_CFA_def_cfa_offset, 24, /* DW_CFA_def_cfa_offset: 24 */
5256 DW_CFA_advance_loc + 58, /* DW_CFA_advance_loc: 58 to __PLT__+64 */
5257 DW_CFA_def_cfa_expression, /* DW_CFA_def_cfa_expression */
5258 13, /* Block length */
5259 DW_OP_breg7, 8, /* DW_OP_breg7 (rsp): 8 */
5260 DW_OP_breg16, 0, /* DW_OP_breg16 (rip): 0 */
5261 DW_OP_const1u, 63, DW_OP_and, DW_OP_const1u, 37, DW_OP_ge,
5262 DW_OP_lit3, DW_OP_shl, DW_OP_plus,
5263 DW_CFA_nop, DW_CFA_nop
5264 };
5265
5266static const struct elf_x86_64_backend_data elf_x86_64_nacl_arch_bed =
5267 {
5268 elf_x86_64_nacl_plt0_entry, /* plt0_entry */
5269 elf_x86_64_nacl_plt_entry, /* plt_entry */
5270 NACL_PLT_ENTRY_SIZE, /* plt_entry_size */
5271 2, /* plt0_got1_offset */
5272 9, /* plt0_got2_offset */
5273 13, /* plt0_got2_insn_end */
5274 3, /* plt_got_offset */
5275 33, /* plt_reloc_offset */
5276 38, /* plt_plt_offset */
5277 7, /* plt_got_insn_size */
5278 42, /* plt_plt_insn_end */
5279 32, /* plt_lazy_offset */
5280 elf_x86_64_nacl_eh_frame_plt, /* eh_frame_plt */
5281 sizeof (elf_x86_64_nacl_eh_frame_plt), /* eh_frame_plt_size */
5282 };
5283
5284#undef elf_backend_arch_data
5285#define elf_backend_arch_data &elf_x86_64_nacl_arch_bed
5286
5a68afcf
RM
5287#undef elf_backend_modify_segment_map
5288#define elf_backend_modify_segment_map nacl_modify_segment_map
5289#undef elf_backend_modify_program_headers
5290#define elf_backend_modify_program_headers nacl_modify_program_headers
5291
8059fb19
RM
5292#include "elf64-target.h"
5293
5294/* Native Client x32 support. */
5295
5296#undef TARGET_LITTLE_SYM
5297#define TARGET_LITTLE_SYM bfd_elf32_x86_64_nacl_vec
5298#undef TARGET_LITTLE_NAME
5299#define TARGET_LITTLE_NAME "elf32-x86-64-nacl"
5300#undef elf32_bed
5301#define elf32_bed elf32_x86_64_nacl_bed
5302
5303#define bfd_elf32_bfd_link_hash_table_create \
5304 elf_x86_64_link_hash_table_create
5305#define bfd_elf32_bfd_link_hash_table_free \
5306 elf_x86_64_link_hash_table_free
5307#define bfd_elf32_bfd_reloc_type_lookup \
5308 elf_x86_64_reloc_type_lookup
5309#define bfd_elf32_bfd_reloc_name_lookup \
5310 elf_x86_64_reloc_name_lookup
5311#define bfd_elf32_mkobject \
5312 elf_x86_64_mkobject
5313
5314#undef elf_backend_object_p
5315#define elf_backend_object_p \
5316 elf32_x86_64_elf_object_p
5317
5318#undef elf_backend_bfd_from_remote_memory
5319#define elf_backend_bfd_from_remote_memory \
5320 _bfd_elf32_bfd_from_remote_memory
5321
5322#undef elf_backend_size_info
5323#define elf_backend_size_info \
5324 _bfd_elf32_size_info
5325
5326#include "elf32-target.h"
5327
5328/* Restore defaults. */
5a68afcf 5329#undef elf_backend_object_p
8059fb19 5330#define elf_backend_object_p elf64_x86_64_elf_object_p
5a68afcf
RM
5331#undef elf_backend_bfd_from_remote_memory
5332#undef elf_backend_size_info
5333#undef elf_backend_modify_segment_map
5334#undef elf_backend_modify_program_headers
8059fb19 5335
8a9036a4
L
5336/* Intel L1OM support. */
5337
5338static bfd_boolean
5339elf64_l1om_elf_object_p (bfd *abfd)
5340{
5341 /* Set the right machine number for an L1OM elf64 file. */
5342 bfd_default_set_arch_mach (abfd, bfd_arch_l1om, bfd_mach_l1om);
5343 return TRUE;
5344}
5345
5346#undef TARGET_LITTLE_SYM
5347#define TARGET_LITTLE_SYM bfd_elf64_l1om_vec
5348#undef TARGET_LITTLE_NAME
5349#define TARGET_LITTLE_NAME "elf64-l1om"
5350#undef ELF_ARCH
5351#define ELF_ARCH bfd_arch_l1om
5352
5353#undef ELF_MACHINE_CODE
5354#define ELF_MACHINE_CODE EM_L1OM
5355
5356#undef ELF_OSABI
5357
5358#undef elf64_bed
5359#define elf64_bed elf64_l1om_bed
5360
5361#undef elf_backend_object_p
5362#define elf_backend_object_p elf64_l1om_elf_object_p
5363
8059fb19
RM
5364/* Restore defaults. */
5365#undef ELF_MAXPAGESIZE
5366#undef ELF_MINPAGESIZE
5367#undef ELF_COMMONPAGESIZE
5368#define ELF_MAXPAGESIZE 0x200000
5369#define ELF_MINPAGESIZE 0x1000
5370#define ELF_COMMONPAGESIZE 0x1000
5371#undef elf_backend_plt_alignment
5372#define elf_backend_plt_alignment 4
5373#undef elf_backend_arch_data
5374#define elf_backend_arch_data &elf_x86_64_arch_bed
1a0c107f 5375
8a9036a4
L
5376#include "elf64-target.h"
5377
5378/* FreeBSD L1OM support. */
5379
5380#undef TARGET_LITTLE_SYM
5381#define TARGET_LITTLE_SYM bfd_elf64_l1om_freebsd_vec
5382#undef TARGET_LITTLE_NAME
5383#define TARGET_LITTLE_NAME "elf64-l1om-freebsd"
5384
5385#undef ELF_OSABI
5386#define ELF_OSABI ELFOSABI_FREEBSD
5387
5388#undef elf64_bed
5389#define elf64_bed elf64_l1om_fbsd_bed
5390
8a9036a4 5391#include "elf64-target.h"
351f65ca 5392
7a9068fe
L
5393/* Intel K1OM support. */
5394
5395static bfd_boolean
5396elf64_k1om_elf_object_p (bfd *abfd)
5397{
5398 /* Set the right machine number for an K1OM elf64 file. */
5399 bfd_default_set_arch_mach (abfd, bfd_arch_k1om, bfd_mach_k1om);
5400 return TRUE;
5401}
5402
5403#undef TARGET_LITTLE_SYM
5404#define TARGET_LITTLE_SYM bfd_elf64_k1om_vec
5405#undef TARGET_LITTLE_NAME
5406#define TARGET_LITTLE_NAME "elf64-k1om"
5407#undef ELF_ARCH
5408#define ELF_ARCH bfd_arch_k1om
5409
5410#undef ELF_MACHINE_CODE
5411#define ELF_MACHINE_CODE EM_K1OM
5412
5413#undef ELF_OSABI
5414
5415#undef elf64_bed
5416#define elf64_bed elf64_k1om_bed
5417
5418#undef elf_backend_object_p
5419#define elf_backend_object_p elf64_k1om_elf_object_p
5420
5421#undef elf_backend_static_tls_alignment
5422
5423#undef elf_backend_want_plt_sym
5424#define elf_backend_want_plt_sym 0
5425
5426#include "elf64-target.h"
5427
5428/* FreeBSD K1OM support. */
5429
5430#undef TARGET_LITTLE_SYM
5431#define TARGET_LITTLE_SYM bfd_elf64_k1om_freebsd_vec
5432#undef TARGET_LITTLE_NAME
5433#define TARGET_LITTLE_NAME "elf64-k1om-freebsd"
5434
5435#undef ELF_OSABI
5436#define ELF_OSABI ELFOSABI_FREEBSD
5437
5438#undef elf64_bed
5439#define elf64_bed elf64_k1om_fbsd_bed
5440
5441#include "elf64-target.h"
5442
351f65ca
L
5443/* 32bit x86-64 support. */
5444
351f65ca
L
5445#undef TARGET_LITTLE_SYM
5446#define TARGET_LITTLE_SYM bfd_elf32_x86_64_vec
5447#undef TARGET_LITTLE_NAME
5448#define TARGET_LITTLE_NAME "elf32-x86-64"
8059fb19 5449#undef elf32_bed
351f65ca
L
5450
5451#undef ELF_ARCH
5452#define ELF_ARCH bfd_arch_i386
5453
5454#undef ELF_MACHINE_CODE
5455#define ELF_MACHINE_CODE EM_X86_64
5456
351f65ca
L
5457#undef ELF_OSABI
5458
351f65ca
L
5459#undef elf_backend_object_p
5460#define elf_backend_object_p \
5461 elf32_x86_64_elf_object_p
5462
5463#undef elf_backend_bfd_from_remote_memory
5464#define elf_backend_bfd_from_remote_memory \
5465 _bfd_elf32_bfd_from_remote_memory
5466
5467#undef elf_backend_size_info
5468#define elf_backend_size_info \
5469 _bfd_elf32_size_info
5470
5471#include "elf32-target.h"
This page took 1.629667 seconds and 4 git commands to generate.