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[ARM] Fix NULL dereference of march_ext_opt
[thirdparty/binutils-gdb.git] / bfd / elfnn-aarch64.c
CommitLineData
cec5225b 1/* AArch64-specific support for NN-bit ELF.
219d1afa 2 Copyright (C) 2009-2018 Free Software Foundation, Inc.
a06ea964
NC		 3 Contributed by ARM Ltd.
4
5 This file is part of BFD, the Binary File Descriptor library.
6
7 This program is free software; you can redistribute it and/or modify
8 it under the terms of the GNU General Public License as published by
9 the Free Software Foundation; either version 3 of the License, or
10 (at your option) any later version.
11
12 This program is distributed in the hope that it will be useful,
13 but WITHOUT ANY WARRANTY; without even the implied warranty of
14 MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
15 GNU General Public License for more details.
16
17 You should have received a copy of the GNU General Public License
18 along with this program; see the file COPYING3. If not,
19 see <http://www.gnu.org/licenses/>. */
20
21/* Notes on implementation:
22
23 Thread Local Store (TLS)
24
25 Overview:
26
27 The implementation currently supports both traditional TLS and TLS
28 descriptors, but only general dynamic (GD).
29
30 For traditional TLS the assembler will present us with code
31 fragments of the form:
32
33 adrp x0, :tlsgd:foo
07d6d2b8 34 R_AARCH64_TLSGD_ADR_PAGE21(foo)
a06ea964 35 add x0, :tlsgd_lo12:foo
07d6d2b8 36 R_AARCH64_TLSGD_ADD_LO12_NC(foo)
a06ea964
NC		 37 bl __tls_get_addr
38 nop
39
40 For TLS descriptors the assembler will present us with code
41 fragments of the form:
42
07d6d2b8
AM		 43 adrp x0, :tlsdesc:foo R_AARCH64_TLSDESC_ADR_PAGE21(foo)
44 ldr x1, [x0, #:tlsdesc_lo12:foo] R_AARCH64_TLSDESC_LD64_LO12(foo)
45 add x0, x0, #:tlsdesc_lo12:foo R_AARCH64_TLSDESC_ADD_LO12(foo)
a06ea964 46 .tlsdesccall foo
07d6d2b8 47 blr x1 R_AARCH64_TLSDESC_CALL(foo)
a06ea964
NC		 48
49 The relocations R_AARCH64_TLSGD_{ADR_PREL21,ADD_LO12_NC} against foo
50 indicate that foo is thread local and should be accessed via the
51 traditional TLS mechanims.
52
a6bb11b2 53 The relocations R_AARCH64_TLSDESC_{ADR_PAGE21,LD64_LO12_NC,ADD_LO12_NC}
a06ea964
NC		 54 against foo indicate that 'foo' is thread local and should be accessed
55 via a TLS descriptor mechanism.
56
57 The precise instruction sequence is only relevant from the
58 perspective of linker relaxation which is currently not implemented.
59
60 The static linker must detect that 'foo' is a TLS object and
61 allocate a double GOT entry. The GOT entry must be created for both
62 global and local TLS symbols. Note that this is different to none
63 TLS local objects which do not need a GOT entry.
64
65 In the traditional TLS mechanism, the double GOT entry is used to
66 provide the tls_index structure, containing module and offset
a6bb11b2 67 entries. The static linker places the relocation R_AARCH64_TLS_DTPMOD
a06ea964
NC		 68 on the module entry. The loader will subsequently fixup this
69 relocation with the module identity.
70
71 For global traditional TLS symbols the static linker places an
a6bb11b2 72 R_AARCH64_TLS_DTPREL relocation on the offset entry. The loader
a06ea964
NC		 73 will subsequently fixup the offset. For local TLS symbols the static
74 linker fixes up offset.
75
76 In the TLS descriptor mechanism the double GOT entry is used to
77 provide the descriptor. The static linker places the relocation
78 R_AARCH64_TLSDESC on the first GOT slot. The loader will
79 subsequently fix this up.
80
81 Implementation:
82
83 The handling of TLS symbols is implemented across a number of
84 different backend functions. The following is a top level view of
85 what processing is performed where.
86
87 The TLS implementation maintains state information for each TLS
88 symbol. The state information for local and global symbols is kept
89 in different places. Global symbols use generic BFD structures while
90 local symbols use backend specific structures that are allocated and
91 maintained entirely by the backend.
92
93 The flow:
94
cec5225b 95 elfNN_aarch64_check_relocs()
a06ea964
NC		 96
97 This function is invoked for each relocation.
98
99 The TLS relocations R_AARCH64_TLSGD_{ADR_PREL21,ADD_LO12_NC} and
a6bb11b2 100 R_AARCH64_TLSDESC_{ADR_PAGE21,LD64_LO12_NC,ADD_LO12_NC} are
a06ea964
NC		 101 spotted. One time creation of local symbol data structures are
102 created when the first local symbol is seen.
103
104 The reference count for a symbol is incremented. The GOT type for
105 each symbol is marked as general dynamic.
106
cec5225b 107 elfNN_aarch64_allocate_dynrelocs ()
a06ea964
NC		 108
109 For each global with positive reference count we allocate a double
110 GOT slot. For a traditional TLS symbol we allocate space for two
111 relocation entries on the GOT, for a TLS descriptor symbol we
112 allocate space for one relocation on the slot. Record the GOT offset
113 for this symbol.
114
cec5225b 115 elfNN_aarch64_size_dynamic_sections ()
a06ea964
NC		 116
117 Iterate all input BFDS, look for in the local symbol data structure
118 constructed earlier for local TLS symbols and allocate them double
119 GOT slots along with space for a single GOT relocation. Update the
120 local symbol structure to record the GOT offset allocated.
121
cec5225b 122 elfNN_aarch64_relocate_section ()
a06ea964 123
cec5225b 124 Calls elfNN_aarch64_final_link_relocate ()
a06ea964
NC		 125
126 Emit the relevant TLS relocations against the GOT for each TLS
127 symbol. For local TLS symbols emit the GOT offset directly. The GOT
128 relocations are emitted once the first time a TLS symbol is
129 encountered. The implementation uses the LSB of the GOT offset to
130 flag that the relevant GOT relocations for a symbol have been
131 emitted. All of the TLS code that uses the GOT offset needs to take
132 care to mask out this flag bit before using the offset.
133
cec5225b 134 elfNN_aarch64_final_link_relocate ()
a06ea964
NC		 135
136 Fixup the R_AARCH64_TLSGD_{ADR_PREL21, ADD_LO12_NC} relocations. */
137
138#include "sysdep.h"
139#include "bfd.h"
140#include "libiberty.h"
141#include "libbfd.h"
142#include "bfd_stdint.h"
143#include "elf-bfd.h"
144#include "bfdlink.h"
1419bbe5 145#include "objalloc.h"
a06ea964 146#include "elf/aarch64.h"
caed7120 147#include "elfxx-aarch64.h"
a06ea964 148
cec5225b
YZ		 149#define ARCH_SIZE NN
150
151#if ARCH_SIZE == 64
152#define AARCH64_R(NAME) R_AARCH64_ ## NAME
153#define AARCH64_R_STR(NAME) "R_AARCH64_" #NAME
a6bb11b2
YZ		 154#define HOWTO64(...) HOWTO (__VA_ARGS__)
155#define HOWTO32(...) EMPTY_HOWTO (0)
cec5225b 156#define LOG_FILE_ALIGN 3
f955cccf 157#define BFD_RELOC_AARCH64_TLSDESC_LD64_LO12_NC BFD_RELOC_AARCH64_TLSDESC_LD64_LO12
cec5225b
YZ		 158#endif
159
160#if ARCH_SIZE == 32
161#define AARCH64_R(NAME) R_AARCH64_P32_ ## NAME
162#define AARCH64_R_STR(NAME) "R_AARCH64_P32_" #NAME
a6bb11b2
YZ		 163#define HOWTO64(...) EMPTY_HOWTO (0)
164#define HOWTO32(...) HOWTO (__VA_ARGS__)
cec5225b 165#define LOG_FILE_ALIGN 2
07d6d2b8
AM		 166#define BFD_RELOC_AARCH64_TLSDESC_LD32_LO12 BFD_RELOC_AARCH64_TLSDESC_LD32_LO12_NC
167#define R_AARCH64_P32_TLSDESC_ADD_LO12 R_AARCH64_P32_TLSDESC_ADD_LO12_NC
cec5225b
YZ		 168#endif
169
a6bb11b2 170#define IS_AARCH64_TLS_RELOC(R_TYPE) \
4c0a9a6f
JW		 171 ((R_TYPE) == BFD_RELOC_AARCH64_TLSGD_ADD_LO12_NC \
172 || (R_TYPE) == BFD_RELOC_AARCH64_TLSGD_ADR_PAGE21 \
3c12b054 173 || (R_TYPE) == BFD_RELOC_AARCH64_TLSGD_ADR_PREL21 \
3e8286c0 174 || (R_TYPE) == BFD_RELOC_AARCH64_TLSGD_MOVW_G0_NC \
1aa66fb1 175 || (R_TYPE) == BFD_RELOC_AARCH64_TLSGD_MOVW_G1 \
a6bb11b2 176 || (R_TYPE) == BFD_RELOC_AARCH64_TLSIE_ADR_GOTTPREL_PAGE21 \
a6bb11b2 177 || (R_TYPE) == BFD_RELOC_AARCH64_TLSIE_LD32_GOTTPREL_LO12_NC \
4c0a9a6f 178 || (R_TYPE) == BFD_RELOC_AARCH64_TLSIE_LD64_GOTTPREL_LO12_NC \
a6bb11b2 179 || (R_TYPE) == BFD_RELOC_AARCH64_TLSIE_LD_GOTTPREL_PREL19 \
4c0a9a6f
JW		 180 || (R_TYPE) == BFD_RELOC_AARCH64_TLSIE_MOVW_GOTTPREL_G0_NC \
181 || (R_TYPE) == BFD_RELOC_AARCH64_TLSIE_MOVW_GOTTPREL_G1 \
6ffe9a1b 182 || (R_TYPE) == BFD_RELOC_AARCH64_TLSLD_ADD_DTPREL_HI12 \
40fbed84 183 || (R_TYPE) == BFD_RELOC_AARCH64_TLSLD_ADD_DTPREL_LO12 \
753999c1 184 || (R_TYPE) == BFD_RELOC_AARCH64_TLSLD_ADD_DTPREL_LO12_NC \
73f925cc 185 || (R_TYPE) == BFD_RELOC_AARCH64_TLSLD_ADD_LO12_NC \
f69e4920 186 || (R_TYPE) == BFD_RELOC_AARCH64_TLSLD_ADR_PAGE21 \
77a69ff8 187 || (R_TYPE) == BFD_RELOC_AARCH64_TLSLD_ADR_PREL21 \
07c9aa07
JW		 188 || (R_TYPE) == BFD_RELOC_AARCH64_TLSLD_LDST16_DTPREL_LO12 \
189 || (R_TYPE) == BFD_RELOC_AARCH64_TLSLD_LDST16_DTPREL_LO12_NC \
190 || (R_TYPE) == BFD_RELOC_AARCH64_TLSLD_LDST32_DTPREL_LO12 \
191 || (R_TYPE) == BFD_RELOC_AARCH64_TLSLD_LDST32_DTPREL_LO12_NC \
192 || (R_TYPE) == BFD_RELOC_AARCH64_TLSLD_LDST64_DTPREL_LO12 \
193 || (R_TYPE) == BFD_RELOC_AARCH64_TLSLD_LDST64_DTPREL_LO12_NC \
194 || (R_TYPE) == BFD_RELOC_AARCH64_TLSLD_LDST8_DTPREL_LO12 \
195 || (R_TYPE) == BFD_RELOC_AARCH64_TLSLD_LDST8_DTPREL_LO12_NC \
6ffe9a1b
JW		 196 || (R_TYPE) == BFD_RELOC_AARCH64_TLSLD_MOVW_DTPREL_G0 \
197 || (R_TYPE) == BFD_RELOC_AARCH64_TLSLD_MOVW_DTPREL_G0_NC \
198 || (R_TYPE) == BFD_RELOC_AARCH64_TLSLD_MOVW_DTPREL_G1 \
199 || (R_TYPE) == BFD_RELOC_AARCH64_TLSLD_MOVW_DTPREL_G1_NC \
200 || (R_TYPE) == BFD_RELOC_AARCH64_TLSLD_MOVW_DTPREL_G2 \
a6bb11b2 201 || (R_TYPE) == BFD_RELOC_AARCH64_TLSLE_ADD_TPREL_HI12 \
4c0a9a6f 202 || (R_TYPE) == BFD_RELOC_AARCH64_TLSLE_ADD_TPREL_LO12 \
a6bb11b2 203 || (R_TYPE) == BFD_RELOC_AARCH64_TLSLE_ADD_TPREL_LO12_NC \
a6bb11b2
YZ		 204 || (R_TYPE) == BFD_RELOC_AARCH64_TLSLE_MOVW_TPREL_G0 \
205 || (R_TYPE) == BFD_RELOC_AARCH64_TLSLE_MOVW_TPREL_G0_NC \
4c0a9a6f
JW		 206 || (R_TYPE) == BFD_RELOC_AARCH64_TLSLE_MOVW_TPREL_G1 \
207 || (R_TYPE) == BFD_RELOC_AARCH64_TLSLE_MOVW_TPREL_G1_NC \
208 || (R_TYPE) == BFD_RELOC_AARCH64_TLSLE_MOVW_TPREL_G2 \
a6bb11b2
YZ		 209 || (R_TYPE) == BFD_RELOC_AARCH64_TLS_DTPMOD \
210 || (R_TYPE) == BFD_RELOC_AARCH64_TLS_DTPREL \
211 || (R_TYPE) == BFD_RELOC_AARCH64_TLS_TPREL \
a06ea964
NC		 212 || IS_AARCH64_TLSDESC_RELOC ((R_TYPE)))
213
9331eea1 214#define IS_AARCH64_TLS_RELAX_RELOC(R_TYPE) \
f955cccf
NC		 215 ((R_TYPE) == BFD_RELOC_AARCH64_TLSDESC_ADD \
216 || (R_TYPE) == BFD_RELOC_AARCH64_TLSDESC_ADD_LO12 \
4af68b9c
JW		 217 || (R_TYPE) == BFD_RELOC_AARCH64_TLSDESC_ADR_PAGE21 \
218 || (R_TYPE) == BFD_RELOC_AARCH64_TLSDESC_ADR_PREL21 \
219 || (R_TYPE) == BFD_RELOC_AARCH64_TLSDESC_CALL \
220 || (R_TYPE) == BFD_RELOC_AARCH64_TLSDESC_LD_PREL19 \
221 || (R_TYPE) == BFD_RELOC_AARCH64_TLSDESC_LDNN_LO12_NC \
0484b454
RL		 222 || (R_TYPE) == BFD_RELOC_AARCH64_TLSDESC_LDR \
223 || (R_TYPE) == BFD_RELOC_AARCH64_TLSDESC_OFF_G0_NC \
224 || (R_TYPE) == BFD_RELOC_AARCH64_TLSDESC_OFF_G1 \
225 || (R_TYPE) == BFD_RELOC_AARCH64_TLSDESC_LDR \
4af68b9c 226 || (R_TYPE) == BFD_RELOC_AARCH64_TLSGD_ADR_PAGE21 \
9331eea1
JW		 227 || (R_TYPE) == BFD_RELOC_AARCH64_TLSGD_ADR_PREL21 \
228 || (R_TYPE) == BFD_RELOC_AARCH64_TLSGD_ADD_LO12_NC \
ac734732
RL		 229 || (R_TYPE) == BFD_RELOC_AARCH64_TLSGD_MOVW_G0_NC \
230 || (R_TYPE) == BFD_RELOC_AARCH64_TLSGD_MOVW_G1 \
9331eea1
JW		 231 || (R_TYPE) == BFD_RELOC_AARCH64_TLSIE_ADR_GOTTPREL_PAGE21 \
232 || (R_TYPE) == BFD_RELOC_AARCH64_TLSIE_LD_GOTTPREL_PREL19 \
233 || (R_TYPE) == BFD_RELOC_AARCH64_TLSIE_LDNN_GOTTPREL_LO12_NC \
259364ad
JW		 234 || (R_TYPE) == BFD_RELOC_AARCH64_TLSLD_ADD_LO12_NC \
235 || (R_TYPE) == BFD_RELOC_AARCH64_TLSLD_ADR_PAGE21 \
4af68b9c 236 || (R_TYPE) == BFD_RELOC_AARCH64_TLSLD_ADR_PREL21)
9331eea1 237
a6bb11b2 238#define IS_AARCH64_TLSDESC_RELOC(R_TYPE) \
4c0a9a6f
JW		 239 ((R_TYPE) == BFD_RELOC_AARCH64_TLSDESC \
240 || (R_TYPE) == BFD_RELOC_AARCH64_TLSDESC_ADD \
f955cccf 241 || (R_TYPE) == BFD_RELOC_AARCH64_TLSDESC_ADD_LO12 \
a6bb11b2 242 || (R_TYPE) == BFD_RELOC_AARCH64_TLSDESC_ADR_PAGE21 \
389b8029 243 || (R_TYPE) == BFD_RELOC_AARCH64_TLSDESC_ADR_PREL21 \
4c0a9a6f 244 || (R_TYPE) == BFD_RELOC_AARCH64_TLSDESC_CALL \
a6bb11b2 245 || (R_TYPE) == BFD_RELOC_AARCH64_TLSDESC_LD32_LO12_NC \
f955cccf 246 || (R_TYPE) == BFD_RELOC_AARCH64_TLSDESC_LD64_LO12 \
a6bb11b2 247 || (R_TYPE) == BFD_RELOC_AARCH64_TLSDESC_LDR \
4c0a9a6f
JW		 248 || (R_TYPE) == BFD_RELOC_AARCH64_TLSDESC_LD_PREL19 \
249 || (R_TYPE) == BFD_RELOC_AARCH64_TLSDESC_OFF_G0_NC \
250 || (R_TYPE) == BFD_RELOC_AARCH64_TLSDESC_OFF_G1)
a06ea964 251
6353d82b 252#define ELIMINATE_COPY_RELOCS 1
a06ea964 253
a06ea964 254/* Return size of a relocation entry. HTAB is the bfd's
cec5225b
YZ		 255 elf_aarch64_link_hash_entry. */
256#define RELOC_SIZE(HTAB) (sizeof (ElfNN_External_Rela))
a06ea964 257
cec5225b 258/* GOT Entry size - 8 bytes in ELF64 and 4 bytes in ELF32. */
07d6d2b8
AM		 259#define GOT_ENTRY_SIZE (ARCH_SIZE / 8)
260#define PLT_ENTRY_SIZE (32)
261#define PLT_SMALL_ENTRY_SIZE (16)
262#define PLT_TLSDESC_ENTRY_SIZE (32)
a06ea964 263
2d0ca824 264/* Encoding of the nop instruction. */
a06ea964
NC		 265#define INSN_NOP 0xd503201f
266
267#define aarch64_compute_jump_table_size(htab) \
268 (((htab)->root.srelplt == NULL) ? 0 \
269 : (htab)->root.srelplt->reloc_count * GOT_ENTRY_SIZE)
270
271/* The first entry in a procedure linkage table looks like this
272 if the distance between the PLTGOT and the PLT is < 4GB use
273 these PLT entries. Note that the dynamic linker gets &PLTGOT[2]
274 in x16 and needs to work out PLTGOT[1] by using an address of
cec5225b
YZ		 275 [x16,#-GOT_ENTRY_SIZE]. */
276static const bfd_byte elfNN_aarch64_small_plt0_entry[PLT_ENTRY_SIZE] =
a06ea964
NC		 277{
278 0xf0, 0x7b, 0xbf, 0xa9, /* stp x16, x30, [sp, #-16]! */
279 0x10, 0x00, 0x00, 0x90, /* adrp x16, (GOT+16) */
caed7120 280#if ARCH_SIZE == 64
a06ea964
NC		 281 0x11, 0x0A, 0x40, 0xf9, /* ldr x17, [x16, #PLT_GOT+0x10] */
282 0x10, 0x42, 0x00, 0x91, /* add x16, x16,#PLT_GOT+0x10 */
caed7120
YZ		 283#else
284 0x11, 0x0A, 0x40, 0xb9, /* ldr w17, [x16, #PLT_GOT+0x8] */
285 0x10, 0x22, 0x00, 0x11, /* add w16, w16,#PLT_GOT+0x8 */
286#endif
a06ea964
NC		 287 0x20, 0x02, 0x1f, 0xd6, /* br x17 */
288 0x1f, 0x20, 0x03, 0xd5, /* nop */
289 0x1f, 0x20, 0x03, 0xd5, /* nop */
290 0x1f, 0x20, 0x03, 0xd5, /* nop */
291};
292
293/* Per function entry in a procedure linkage table looks like this
294 if the distance between the PLTGOT and the PLT is < 4GB use
295 these PLT entries. */
cec5225b 296static const bfd_byte elfNN_aarch64_small_plt_entry[PLT_SMALL_ENTRY_SIZE] =
a06ea964
NC		 297{
298 0x10, 0x00, 0x00, 0x90, /* adrp x16, PLTGOT + n * 8 */
caed7120 299#if ARCH_SIZE == 64
a06ea964
NC		 300 0x11, 0x02, 0x40, 0xf9, /* ldr x17, [x16, PLTGOT + n * 8] */
301 0x10, 0x02, 0x00, 0x91, /* add x16, x16, :lo12:PLTGOT + n * 8 */
caed7120
YZ		 302#else
303 0x11, 0x02, 0x40, 0xb9, /* ldr w17, [x16, PLTGOT + n * 4] */
304 0x10, 0x02, 0x00, 0x11, /* add w16, w16, :lo12:PLTGOT + n * 4 */
305#endif
a06ea964
NC		 306 0x20, 0x02, 0x1f, 0xd6, /* br x17. */
307};
308
309static const bfd_byte
cec5225b 310elfNN_aarch64_tlsdesc_small_plt_entry[PLT_TLSDESC_ENTRY_SIZE] =
a06ea964
NC		 311{
312 0xe2, 0x0f, 0xbf, 0xa9, /* stp x2, x3, [sp, #-16]! */
313 0x02, 0x00, 0x00, 0x90, /* adrp x2, 0 */
314 0x03, 0x00, 0x00, 0x90, /* adrp x3, 0 */
caed7120
YZ		 315#if ARCH_SIZE == 64
316 0x42, 0x00, 0x40, 0xf9, /* ldr x2, [x2, #0] */
a06ea964 317 0x63, 0x00, 0x00, 0x91, /* add x3, x3, 0 */
caed7120
YZ		 318#else
319 0x42, 0x00, 0x40, 0xb9, /* ldr w2, [x2, #0] */
320 0x63, 0x00, 0x00, 0x11, /* add w3, w3, 0 */
321#endif
322 0x40, 0x00, 0x1f, 0xd6, /* br x2 */
a06ea964
NC		 323 0x1f, 0x20, 0x03, 0xd5, /* nop */
324 0x1f, 0x20, 0x03, 0xd5, /* nop */
325};
326
07d6d2b8
AM		 327#define elf_info_to_howto elfNN_aarch64_info_to_howto
328#define elf_info_to_howto_rel elfNN_aarch64_info_to_howto
a06ea964
NC		 329
330#define AARCH64_ELF_ABI_VERSION 0
a06ea964
NC		 331
332/* In case we're on a 32-bit machine, construct a 64-bit "-1" value. */
333#define ALL_ONES (~ (bfd_vma) 0)
334
a6bb11b2
YZ		 335/* Indexed by the bfd interal reloc enumerators.
336 Therefore, the table needs to be synced with BFD_RELOC_AARCH64_*
337 in reloc.c. */
a06ea964 338
a6bb11b2 339static reloc_howto_type elfNN_aarch64_howto_table[] =
a06ea964 340{
a6bb11b2 341 EMPTY_HOWTO (0),
a06ea964 342
a6bb11b2 343 /* Basic data relocations. */
a06ea964 344
b7f28d87
JW		 345 /* Deprecated, but retained for backwards compatibility. */
346 HOWTO64 (R_AARCH64_NULL, /* type */
a06ea964 347 0, /* rightshift */
6346d5ca 348 3, /* size (0 = byte, 1 = short, 2 = long) */
a6bb11b2 349 0, /* bitsize */
a06ea964
NC		 350 FALSE, /* pc_relative */
351 0, /* bitpos */
352 complain_overflow_dont, /* complain_on_overflow */
353 bfd_elf_generic_reloc, /* special_function */
a6bb11b2 354 "R_AARCH64_NULL", /* name */
a06ea964
NC		 355 FALSE, /* partial_inplace */
356 0, /* src_mask */
a6bb11b2 357 0, /* dst_mask */
a06ea964 358 FALSE), /* pcrel_offset */
a6bb11b2 359 HOWTO (R_AARCH64_NONE, /* type */
a06ea964 360 0, /* rightshift */
6346d5ca 361 3, /* size (0 = byte, 1 = short, 2 = long) */
a06ea964
NC		 362 0, /* bitsize */
363 FALSE, /* pc_relative */
364 0, /* bitpos */
365 complain_overflow_dont, /* complain_on_overflow */
366 bfd_elf_generic_reloc, /* special_function */
a6bb11b2 367 "R_AARCH64_NONE", /* name */
a06ea964
NC		 368 FALSE, /* partial_inplace */
369 0, /* src_mask */
370 0, /* dst_mask */
371 FALSE), /* pcrel_offset */
372
373 /* .xword: (S+A) */
a6bb11b2 374 HOWTO64 (AARCH64_R (ABS64), /* type */
a06ea964
NC		 375 0, /* rightshift */
376 4, /* size (4 = long long) */
377 64, /* bitsize */
378 FALSE, /* pc_relative */
379 0, /* bitpos */
380 complain_overflow_unsigned, /* complain_on_overflow */
381 bfd_elf_generic_reloc, /* special_function */
a6bb11b2 382 AARCH64_R_STR (ABS64), /* name */
a06ea964
NC		 383 FALSE, /* partial_inplace */
384 ALL_ONES, /* src_mask */
385 ALL_ONES, /* dst_mask */
386 FALSE), /* pcrel_offset */
387
388 /* .word: (S+A) */
a6bb11b2 389 HOWTO (AARCH64_R (ABS32), /* type */
a06ea964
NC		 390 0, /* rightshift */
391 2, /* size (0 = byte, 1 = short, 2 = long) */
392 32, /* bitsize */
393 FALSE, /* pc_relative */
394 0, /* bitpos */
395 complain_overflow_unsigned, /* complain_on_overflow */
396 bfd_elf_generic_reloc, /* special_function */
a6bb11b2 397 AARCH64_R_STR (ABS32), /* name */
a06ea964
NC		 398 FALSE, /* partial_inplace */
399 0xffffffff, /* src_mask */
400 0xffffffff, /* dst_mask */
401 FALSE), /* pcrel_offset */
402
403 /* .half: (S+A) */
a6bb11b2 404 HOWTO (AARCH64_R (ABS16), /* type */
a06ea964
NC		 405 0, /* rightshift */
406 1, /* size (0 = byte, 1 = short, 2 = long) */
407 16, /* bitsize */
408 FALSE, /* pc_relative */
409 0, /* bitpos */
410 complain_overflow_unsigned, /* complain_on_overflow */
411 bfd_elf_generic_reloc, /* special_function */
a6bb11b2 412 AARCH64_R_STR (ABS16), /* name */
a06ea964
NC		 413 FALSE, /* partial_inplace */
414 0xffff, /* src_mask */
415 0xffff, /* dst_mask */
416 FALSE), /* pcrel_offset */
417
418 /* .xword: (S+A-P) */
a6bb11b2 419 HOWTO64 (AARCH64_R (PREL64), /* type */
a06ea964
NC		 420 0, /* rightshift */
421 4, /* size (4 = long long) */
422 64, /* bitsize */
423 TRUE, /* pc_relative */
424 0, /* bitpos */
425 complain_overflow_signed, /* complain_on_overflow */
426 bfd_elf_generic_reloc, /* special_function */
a6bb11b2 427 AARCH64_R_STR (PREL64), /* name */
a06ea964
NC		 428 FALSE, /* partial_inplace */
429 ALL_ONES, /* src_mask */
430 ALL_ONES, /* dst_mask */
431 TRUE), /* pcrel_offset */
432
433 /* .word: (S+A-P) */
a6bb11b2 434 HOWTO (AARCH64_R (PREL32), /* type */
a06ea964
NC		 435 0, /* rightshift */
436 2, /* size (0 = byte, 1 = short, 2 = long) */
437 32, /* bitsize */
438 TRUE, /* pc_relative */
439 0, /* bitpos */
440 complain_overflow_signed, /* complain_on_overflow */
441 bfd_elf_generic_reloc, /* special_function */
a6bb11b2 442 AARCH64_R_STR (PREL32), /* name */
a06ea964
NC		 443 FALSE, /* partial_inplace */
444 0xffffffff, /* src_mask */
445 0xffffffff, /* dst_mask */
446 TRUE), /* pcrel_offset */
447
448 /* .half: (S+A-P) */
a6bb11b2 449 HOWTO (AARCH64_R (PREL16), /* type */
a06ea964
NC		 450 0, /* rightshift */
451 1, /* size (0 = byte, 1 = short, 2 = long) */
452 16, /* bitsize */
453 TRUE, /* pc_relative */
454 0, /* bitpos */
455 complain_overflow_signed, /* complain_on_overflow */
456 bfd_elf_generic_reloc, /* special_function */
a6bb11b2 457 AARCH64_R_STR (PREL16), /* name */
a06ea964
NC		 458 FALSE, /* partial_inplace */
459 0xffff, /* src_mask */
460 0xffff, /* dst_mask */
461 TRUE), /* pcrel_offset */
462
463 /* Group relocations to create a 16, 32, 48 or 64 bit
464 unsigned data or abs address inline. */
465
466 /* MOVZ: ((S+A) >> 0) & 0xffff */
a6bb11b2 467 HOWTO (AARCH64_R (MOVW_UABS_G0), /* type */
a06ea964
NC		 468 0, /* rightshift */
469 2, /* size (0 = byte, 1 = short, 2 = long) */
470 16, /* bitsize */
471 FALSE, /* pc_relative */
472 0, /* bitpos */
473 complain_overflow_unsigned, /* complain_on_overflow */
474 bfd_elf_generic_reloc, /* special_function */
a6bb11b2 475 AARCH64_R_STR (MOVW_UABS_G0), /* name */
a06ea964
NC		 476 FALSE, /* partial_inplace */
477 0xffff, /* src_mask */
478 0xffff, /* dst_mask */
479 FALSE), /* pcrel_offset */
480
481 /* MOVK: ((S+A) >> 0) & 0xffff [no overflow check] */
a6bb11b2 482 HOWTO (AARCH64_R (MOVW_UABS_G0_NC), /* type */
a06ea964
NC		 483 0, /* rightshift */
484 2, /* size (0 = byte, 1 = short, 2 = long) */
485 16, /* bitsize */
486 FALSE, /* pc_relative */
487 0, /* bitpos */
488 complain_overflow_dont, /* complain_on_overflow */
489 bfd_elf_generic_reloc, /* special_function */
a6bb11b2 490 AARCH64_R_STR (MOVW_UABS_G0_NC), /* name */
a06ea964
NC		 491 FALSE, /* partial_inplace */
492 0xffff, /* src_mask */
493 0xffff, /* dst_mask */
494 FALSE), /* pcrel_offset */
495
496 /* MOVZ: ((S+A) >> 16) & 0xffff */
a6bb11b2 497 HOWTO (AARCH64_R (MOVW_UABS_G1), /* type */
a06ea964
NC		 498 16, /* rightshift */
499 2, /* size (0 = byte, 1 = short, 2 = long) */
500 16, /* bitsize */
501 FALSE, /* pc_relative */
502 0, /* bitpos */
503 complain_overflow_unsigned, /* complain_on_overflow */
504 bfd_elf_generic_reloc, /* special_function */
a6bb11b2 505 AARCH64_R_STR (MOVW_UABS_G1), /* name */
a06ea964
NC		 506 FALSE, /* partial_inplace */
507 0xffff, /* src_mask */
508 0xffff, /* dst_mask */
509 FALSE), /* pcrel_offset */
510
511 /* MOVK: ((S+A) >> 16) & 0xffff [no overflow check] */
a6bb11b2 512 HOWTO64 (AARCH64_R (MOVW_UABS_G1_NC), /* type */
a06ea964
NC		 513 16, /* rightshift */
514 2, /* size (0 = byte, 1 = short, 2 = long) */
515 16, /* bitsize */
516 FALSE, /* pc_relative */
517 0, /* bitpos */
518 complain_overflow_dont, /* complain_on_overflow */
519 bfd_elf_generic_reloc, /* special_function */
a6bb11b2 520 AARCH64_R_STR (MOVW_UABS_G1_NC), /* name */
a06ea964
NC		 521 FALSE, /* partial_inplace */
522 0xffff, /* src_mask */
523 0xffff, /* dst_mask */
524 FALSE), /* pcrel_offset */
525
526 /* MOVZ: ((S+A) >> 32) & 0xffff */
a6bb11b2 527 HOWTO64 (AARCH64_R (MOVW_UABS_G2), /* type */
a06ea964
NC		 528 32, /* rightshift */
529 2, /* size (0 = byte, 1 = short, 2 = long) */
530 16, /* bitsize */
531 FALSE, /* pc_relative */
532 0, /* bitpos */
533 complain_overflow_unsigned, /* complain_on_overflow */
534 bfd_elf_generic_reloc, /* special_function */
a6bb11b2 535 AARCH64_R_STR (MOVW_UABS_G2), /* name */
a06ea964
NC		 536 FALSE, /* partial_inplace */
537 0xffff, /* src_mask */
538 0xffff, /* dst_mask */
539 FALSE), /* pcrel_offset */
540
541 /* MOVK: ((S+A) >> 32) & 0xffff [no overflow check] */
a6bb11b2 542 HOWTO64 (AARCH64_R (MOVW_UABS_G2_NC), /* type */
a06ea964
NC		 543 32, /* rightshift */
544 2, /* size (0 = byte, 1 = short, 2 = long) */
545 16, /* bitsize */
546 FALSE, /* pc_relative */
547 0, /* bitpos */
548 complain_overflow_dont, /* complain_on_overflow */
549 bfd_elf_generic_reloc, /* special_function */
a6bb11b2 550 AARCH64_R_STR (MOVW_UABS_G2_NC), /* name */
a06ea964
NC		 551 FALSE, /* partial_inplace */
552 0xffff, /* src_mask */
553 0xffff, /* dst_mask */
554 FALSE), /* pcrel_offset */
555
556 /* MOVZ: ((S+A) >> 48) & 0xffff */
a6bb11b2 557 HOWTO64 (AARCH64_R (MOVW_UABS_G3), /* type */
a06ea964
NC		 558 48, /* rightshift */
559 2, /* size (0 = byte, 1 = short, 2 = long) */
560 16, /* bitsize */
561 FALSE, /* pc_relative */
562 0, /* bitpos */
563 complain_overflow_unsigned, /* complain_on_overflow */
564 bfd_elf_generic_reloc, /* special_function */
a6bb11b2 565 AARCH64_R_STR (MOVW_UABS_G3), /* name */
a06ea964
NC		 566 FALSE, /* partial_inplace */
567 0xffff, /* src_mask */
568 0xffff, /* dst_mask */
569 FALSE), /* pcrel_offset */
570
571 /* Group relocations to create high part of a 16, 32, 48 or 64 bit
572 signed data or abs address inline. Will change instruction
573 to MOVN or MOVZ depending on sign of calculated value. */
574
575 /* MOV[ZN]: ((S+A) >> 0) & 0xffff */
a6bb11b2 576 HOWTO (AARCH64_R (MOVW_SABS_G0), /* type */
a06ea964
NC		 577 0, /* rightshift */
578 2, /* size (0 = byte, 1 = short, 2 = long) */
c5e3a364 579 17, /* bitsize */
a06ea964
NC		 580 FALSE, /* pc_relative */
581 0, /* bitpos */
582 complain_overflow_signed, /* complain_on_overflow */
583 bfd_elf_generic_reloc, /* special_function */
a6bb11b2 584 AARCH64_R_STR (MOVW_SABS_G0), /* name */
a06ea964
NC		 585 FALSE, /* partial_inplace */
586 0xffff, /* src_mask */
587 0xffff, /* dst_mask */
588 FALSE), /* pcrel_offset */
589
590 /* MOV[ZN]: ((S+A) >> 16) & 0xffff */
a6bb11b2 591 HOWTO64 (AARCH64_R (MOVW_SABS_G1), /* type */
a06ea964
NC		 592 16, /* rightshift */
593 2, /* size (0 = byte, 1 = short, 2 = long) */
c5e3a364 594 17, /* bitsize */
a06ea964
NC		 595 FALSE, /* pc_relative */
596 0, /* bitpos */
597 complain_overflow_signed, /* complain_on_overflow */
598 bfd_elf_generic_reloc, /* special_function */
a6bb11b2 599 AARCH64_R_STR (MOVW_SABS_G1), /* name */
a06ea964
NC		 600 FALSE, /* partial_inplace */
601 0xffff, /* src_mask */
602 0xffff, /* dst_mask */
603 FALSE), /* pcrel_offset */
604
605 /* MOV[ZN]: ((S+A) >> 32) & 0xffff */
a6bb11b2 606 HOWTO64 (AARCH64_R (MOVW_SABS_G2), /* type */
a06ea964
NC		 607 32, /* rightshift */
608 2, /* size (0 = byte, 1 = short, 2 = long) */
c5e3a364 609 17, /* bitsize */
a06ea964
NC		 610 FALSE, /* pc_relative */
611 0, /* bitpos */
612 complain_overflow_signed, /* complain_on_overflow */
613 bfd_elf_generic_reloc, /* special_function */
a6bb11b2 614 AARCH64_R_STR (MOVW_SABS_G2), /* name */
a06ea964
NC		 615 FALSE, /* partial_inplace */
616 0xffff, /* src_mask */
617 0xffff, /* dst_mask */
618 FALSE), /* pcrel_offset */
619
32247401
RL		 620 /* Group relocations to create a 16, 32, 48 or 64 bit
621 PC relative address inline. */
622
623 /* MOV[NZ]: ((S+A-P) >> 0) & 0xffff */
624 HOWTO64 (AARCH64_R (MOVW_PREL_G0), /* type */
625 0, /* rightshift */
626 2, /* size (0 = byte, 1 = short, 2 = long) */
627 17, /* bitsize */
628 TRUE, /* pc_relative */
629 0, /* bitpos */
630 complain_overflow_signed, /* complain_on_overflow */
631 bfd_elf_generic_reloc, /* special_function */
632 AARCH64_R_STR (MOVW_PREL_G0), /* name */
633 FALSE, /* partial_inplace */
634 0xffff, /* src_mask */
635 0xffff, /* dst_mask */
636 TRUE), /* pcrel_offset */
637
638 /* MOVK: ((S+A-P) >> 0) & 0xffff [no overflow check] */
639 HOWTO64 (AARCH64_R (MOVW_PREL_G0_NC), /* type */
640 0, /* rightshift */
641 2, /* size (0 = byte, 1 = short, 2 = long) */
642 16, /* bitsize */
643 TRUE, /* pc_relative */
644 0, /* bitpos */
645 complain_overflow_dont, /* complain_on_overflow */
646 bfd_elf_generic_reloc, /* special_function */
647 AARCH64_R_STR (MOVW_PREL_G0_NC), /* name */
648 FALSE, /* partial_inplace */
649 0xffff, /* src_mask */
650 0xffff, /* dst_mask */
651 TRUE), /* pcrel_offset */
652
653 /* MOV[NZ]: ((S+A-P) >> 16) & 0xffff */
654 HOWTO64 (AARCH64_R (MOVW_PREL_G1), /* type */
655 16, /* rightshift */
656 2, /* size (0 = byte, 1 = short, 2 = long) */
657 17, /* bitsize */
658 TRUE, /* pc_relative */
659 0, /* bitpos */
660 complain_overflow_signed, /* complain_on_overflow */
661 bfd_elf_generic_reloc, /* special_function */
662 AARCH64_R_STR (MOVW_PREL_G1), /* name */
663 FALSE, /* partial_inplace */
664 0xffff, /* src_mask */
665 0xffff, /* dst_mask */
666 TRUE), /* pcrel_offset */
667
668 /* MOVK: ((S+A-P) >> 16) & 0xffff [no overflow check] */
669 HOWTO64 (AARCH64_R (MOVW_PREL_G1_NC), /* type */
670 16, /* rightshift */
671 2, /* size (0 = byte, 1 = short, 2 = long) */
672 16, /* bitsize */
673 TRUE, /* pc_relative */
674 0, /* bitpos */
675 complain_overflow_dont, /* complain_on_overflow */
676 bfd_elf_generic_reloc, /* special_function */
677 AARCH64_R_STR (MOVW_PREL_G1_NC), /* name */
678 FALSE, /* partial_inplace */
679 0xffff, /* src_mask */
680 0xffff, /* dst_mask */
681 TRUE), /* pcrel_offset */
682
683 /* MOV[NZ]: ((S+A-P) >> 32) & 0xffff */
684 HOWTO64 (AARCH64_R (MOVW_PREL_G2), /* type */
685 32, /* rightshift */
686 2, /* size (0 = byte, 1 = short, 2 = long) */
687 17, /* bitsize */
688 TRUE, /* pc_relative */
689 0, /* bitpos */
690 complain_overflow_signed, /* complain_on_overflow */
691 bfd_elf_generic_reloc, /* special_function */
692 AARCH64_R_STR (MOVW_PREL_G2), /* name */
693 FALSE, /* partial_inplace */
694 0xffff, /* src_mask */
695 0xffff, /* dst_mask */
696 TRUE), /* pcrel_offset */
697
698 /* MOVK: ((S+A-P) >> 32) & 0xffff [no overflow check] */
699 HOWTO64 (AARCH64_R (MOVW_PREL_G2_NC), /* type */
700 32, /* rightshift */
701 2, /* size (0 = byte, 1 = short, 2 = long) */
702 16, /* bitsize */
703 TRUE, /* pc_relative */
704 0, /* bitpos */
705 complain_overflow_dont, /* complain_on_overflow */
706 bfd_elf_generic_reloc, /* special_function */
707 AARCH64_R_STR (MOVW_PREL_G2_NC), /* name */
708 FALSE, /* partial_inplace */
709 0xffff, /* src_mask */
710 0xffff, /* dst_mask */
711 TRUE), /* pcrel_offset */
712
713 /* MOV[NZ]: ((S+A-P) >> 48) & 0xffff */
714 HOWTO64 (AARCH64_R (MOVW_PREL_G3), /* type */
715 48, /* rightshift */
716 2, /* size (0 = byte, 1 = short, 2 = long) */
717 16, /* bitsize */
718 TRUE, /* pc_relative */
719 0, /* bitpos */
720 complain_overflow_dont, /* complain_on_overflow */
721 bfd_elf_generic_reloc, /* special_function */
722 AARCH64_R_STR (MOVW_PREL_G3), /* name */
723 FALSE, /* partial_inplace */
724 0xffff, /* src_mask */
725 0xffff, /* dst_mask */
726 TRUE), /* pcrel_offset */
727
a06ea964
NC		 728/* Relocations to generate 19, 21 and 33 bit PC-relative load/store
729 addresses: PG(x) is (x & ~0xfff). */
730
731 /* LD-lit: ((S+A-P) >> 2) & 0x7ffff */
a6bb11b2 732 HOWTO (AARCH64_R (LD_PREL_LO19), /* type */
a06ea964
NC		 733 2, /* rightshift */
734 2, /* size (0 = byte, 1 = short, 2 = long) */
735 19, /* bitsize */
736 TRUE, /* pc_relative */
737 0, /* bitpos */
738 complain_overflow_signed, /* complain_on_overflow */
739 bfd_elf_generic_reloc, /* special_function */
a6bb11b2 740 AARCH64_R_STR (LD_PREL_LO19), /* name */
a06ea964
NC		 741 FALSE, /* partial_inplace */
742 0x7ffff, /* src_mask */
743 0x7ffff, /* dst_mask */
744 TRUE), /* pcrel_offset */
745
746 /* ADR: (S+A-P) & 0x1fffff */
a6bb11b2 747 HOWTO (AARCH64_R (ADR_PREL_LO21), /* type */
a06ea964
NC		 748 0, /* rightshift */
749 2, /* size (0 = byte, 1 = short, 2 = long) */
750 21, /* bitsize */
751 TRUE, /* pc_relative */
752 0, /* bitpos */
753 complain_overflow_signed, /* complain_on_overflow */
754 bfd_elf_generic_reloc, /* special_function */
a6bb11b2 755 AARCH64_R_STR (ADR_PREL_LO21), /* name */
a06ea964
NC		 756 FALSE, /* partial_inplace */
757 0x1fffff, /* src_mask */
758 0x1fffff, /* dst_mask */
759 TRUE), /* pcrel_offset */
760
761 /* ADRP: ((PG(S+A)-PG(P)) >> 12) & 0x1fffff */
a6bb11b2 762 HOWTO (AARCH64_R (ADR_PREL_PG_HI21), /* type */
a06ea964
NC		 763 12, /* rightshift */
764 2, /* size (0 = byte, 1 = short, 2 = long) */
765 21, /* bitsize */
766 TRUE, /* pc_relative */
767 0, /* bitpos */
768 complain_overflow_signed, /* complain_on_overflow */
769 bfd_elf_generic_reloc, /* special_function */
a6bb11b2 770 AARCH64_R_STR (ADR_PREL_PG_HI21), /* name */
a06ea964
NC		 771 FALSE, /* partial_inplace */
772 0x1fffff, /* src_mask */
773 0x1fffff, /* dst_mask */
774 TRUE), /* pcrel_offset */
775
776 /* ADRP: ((PG(S+A)-PG(P)) >> 12) & 0x1fffff [no overflow check] */
a6bb11b2 777 HOWTO64 (AARCH64_R (ADR_PREL_PG_HI21_NC), /* type */
a06ea964
NC		 778 12, /* rightshift */
779 2, /* size (0 = byte, 1 = short, 2 = long) */
780 21, /* bitsize */
781 TRUE, /* pc_relative */
782 0, /* bitpos */
783 complain_overflow_dont, /* complain_on_overflow */
784 bfd_elf_generic_reloc, /* special_function */
a6bb11b2 785 AARCH64_R_STR (ADR_PREL_PG_HI21_NC), /* name */
a06ea964
NC		 786 FALSE, /* partial_inplace */
787 0x1fffff, /* src_mask */
788 0x1fffff, /* dst_mask */
789 TRUE), /* pcrel_offset */
790
791 /* ADD: (S+A) & 0xfff [no overflow check] */
a6bb11b2 792 HOWTO (AARCH64_R (ADD_ABS_LO12_NC), /* type */
a06ea964
NC		 793 0, /* rightshift */
794 2, /* size (0 = byte, 1 = short, 2 = long) */
795 12, /* bitsize */
796 FALSE, /* pc_relative */
797 10, /* bitpos */
798 complain_overflow_dont, /* complain_on_overflow */
799 bfd_elf_generic_reloc, /* special_function */
a6bb11b2 800 AARCH64_R_STR (ADD_ABS_LO12_NC), /* name */
a06ea964
NC		 801 FALSE, /* partial_inplace */
802 0x3ffc00, /* src_mask */
803 0x3ffc00, /* dst_mask */
804 FALSE), /* pcrel_offset */
805
806 /* LD/ST8: (S+A) & 0xfff */
a6bb11b2 807 HOWTO (AARCH64_R (LDST8_ABS_LO12_NC), /* type */
a06ea964
NC		 808 0, /* rightshift */
809 2, /* size (0 = byte, 1 = short, 2 = long) */
810 12, /* bitsize */
811 FALSE, /* pc_relative */
812 0, /* bitpos */
813 complain_overflow_dont, /* complain_on_overflow */
814 bfd_elf_generic_reloc, /* special_function */
a6bb11b2 815 AARCH64_R_STR (LDST8_ABS_LO12_NC), /* name */
a06ea964
NC		 816 FALSE, /* partial_inplace */
817 0xfff, /* src_mask */
818 0xfff, /* dst_mask */
819 FALSE), /* pcrel_offset */
820
821 /* Relocations for control-flow instructions. */
822
823 /* TBZ/NZ: ((S+A-P) >> 2) & 0x3fff */
a6bb11b2 824 HOWTO (AARCH64_R (TSTBR14), /* type */
a06ea964
NC		 825 2, /* rightshift */
826 2, /* size (0 = byte, 1 = short, 2 = long) */
827 14, /* bitsize */
828 TRUE, /* pc_relative */
829 0, /* bitpos */
830 complain_overflow_signed, /* complain_on_overflow */
831 bfd_elf_generic_reloc, /* special_function */
a6bb11b2 832 AARCH64_R_STR (TSTBR14), /* name */
a06ea964
NC		 833 FALSE, /* partial_inplace */
834 0x3fff, /* src_mask */
835 0x3fff, /* dst_mask */
836 TRUE), /* pcrel_offset */
837
838 /* B.cond: ((S+A-P) >> 2) & 0x7ffff */
a6bb11b2 839 HOWTO (AARCH64_R (CONDBR19), /* type */
a06ea964
NC		 840 2, /* rightshift */
841 2, /* size (0 = byte, 1 = short, 2 = long) */
842 19, /* bitsize */
843 TRUE, /* pc_relative */
844 0, /* bitpos */
845 complain_overflow_signed, /* complain_on_overflow */
846 bfd_elf_generic_reloc, /* special_function */
a6bb11b2 847 AARCH64_R_STR (CONDBR19), /* name */
a06ea964
NC		 848 FALSE, /* partial_inplace */
849 0x7ffff, /* src_mask */
850 0x7ffff, /* dst_mask */
851 TRUE), /* pcrel_offset */
852
a06ea964 853 /* B: ((S+A-P) >> 2) & 0x3ffffff */
a6bb11b2 854 HOWTO (AARCH64_R (JUMP26), /* type */
a06ea964
NC		 855 2, /* rightshift */
856 2, /* size (0 = byte, 1 = short, 2 = long) */
857 26, /* bitsize */
858 TRUE, /* pc_relative */
859 0, /* bitpos */
860 complain_overflow_signed, /* complain_on_overflow */
861 bfd_elf_generic_reloc, /* special_function */
a6bb11b2 862 AARCH64_R_STR (JUMP26), /* name */
a06ea964
NC		 863 FALSE, /* partial_inplace */
864 0x3ffffff, /* src_mask */
865 0x3ffffff, /* dst_mask */
866 TRUE), /* pcrel_offset */
867
868 /* BL: ((S+A-P) >> 2) & 0x3ffffff */
a6bb11b2 869 HOWTO (AARCH64_R (CALL26), /* type */
a06ea964
NC		 870 2, /* rightshift */
871 2, /* size (0 = byte, 1 = short, 2 = long) */
872 26, /* bitsize */
873 TRUE, /* pc_relative */
874 0, /* bitpos */
875 complain_overflow_signed, /* complain_on_overflow */
876 bfd_elf_generic_reloc, /* special_function */
a6bb11b2 877 AARCH64_R_STR (CALL26), /* name */
a06ea964
NC		 878 FALSE, /* partial_inplace */
879 0x3ffffff, /* src_mask */
880 0x3ffffff, /* dst_mask */
881 TRUE), /* pcrel_offset */
882
883 /* LD/ST16: (S+A) & 0xffe */
a6bb11b2 884 HOWTO (AARCH64_R (LDST16_ABS_LO12_NC), /* type */
a06ea964
NC		 885 1, /* rightshift */
886 2, /* size (0 = byte, 1 = short, 2 = long) */
887 12, /* bitsize */
888 FALSE, /* pc_relative */
889 0, /* bitpos */
890 complain_overflow_dont, /* complain_on_overflow */
891 bfd_elf_generic_reloc, /* special_function */
a6bb11b2 892 AARCH64_R_STR (LDST16_ABS_LO12_NC), /* name */
a06ea964
NC		 893 FALSE, /* partial_inplace */
894 0xffe, /* src_mask */
895 0xffe, /* dst_mask */
896 FALSE), /* pcrel_offset */
897
898 /* LD/ST32: (S+A) & 0xffc */
a6bb11b2 899 HOWTO (AARCH64_R (LDST32_ABS_LO12_NC), /* type */
a06ea964
NC		 900 2, /* rightshift */
901 2, /* size (0 = byte, 1 = short, 2 = long) */
902 12, /* bitsize */
903 FALSE, /* pc_relative */
904 0, /* bitpos */
905 complain_overflow_dont, /* complain_on_overflow */
906 bfd_elf_generic_reloc, /* special_function */
a6bb11b2 907 AARCH64_R_STR (LDST32_ABS_LO12_NC), /* name */
a06ea964
NC		 908 FALSE, /* partial_inplace */
909 0xffc, /* src_mask */
910 0xffc, /* dst_mask */
911 FALSE), /* pcrel_offset */
912
913 /* LD/ST64: (S+A) & 0xff8 */
a6bb11b2 914 HOWTO (AARCH64_R (LDST64_ABS_LO12_NC), /* type */
a06ea964
NC		 915 3, /* rightshift */
916 2, /* size (0 = byte, 1 = short, 2 = long) */
917 12, /* bitsize */
918 FALSE, /* pc_relative */
919 0, /* bitpos */
920 complain_overflow_dont, /* complain_on_overflow */
921 bfd_elf_generic_reloc, /* special_function */
a6bb11b2 922 AARCH64_R_STR (LDST64_ABS_LO12_NC), /* name */
a06ea964
NC		 923 FALSE, /* partial_inplace */
924 0xff8, /* src_mask */
925 0xff8, /* dst_mask */
926 FALSE), /* pcrel_offset */
927
a06ea964 928 /* LD/ST128: (S+A) & 0xff0 */
a6bb11b2 929 HOWTO (AARCH64_R (LDST128_ABS_LO12_NC), /* type */
a06ea964
NC		 930 4, /* rightshift */
931 2, /* size (0 = byte, 1 = short, 2 = long) */
932 12, /* bitsize */
933 FALSE, /* pc_relative */
934 0, /* bitpos */
935 complain_overflow_dont, /* complain_on_overflow */
936 bfd_elf_generic_reloc, /* special_function */
a6bb11b2 937 AARCH64_R_STR (LDST128_ABS_LO12_NC), /* name */
a06ea964
NC		 938 FALSE, /* partial_inplace */
939 0xff0, /* src_mask */
940 0xff0, /* dst_mask */
941 FALSE), /* pcrel_offset */
942
f41aef5f
RE		 943 /* Set a load-literal immediate field to bits
944 0x1FFFFC of G(S)-P */
a6bb11b2 945 HOWTO (AARCH64_R (GOT_LD_PREL19), /* type */
f41aef5f
RE		 946 2, /* rightshift */
947 2, /* size (0 = byte,1 = short,2 = long) */
948 19, /* bitsize */
949 TRUE, /* pc_relative */
950 0, /* bitpos */
951 complain_overflow_signed, /* complain_on_overflow */
952 bfd_elf_generic_reloc, /* special_function */
a6bb11b2 953 AARCH64_R_STR (GOT_LD_PREL19), /* name */
f41aef5f
RE		 954 FALSE, /* partial_inplace */
955 0xffffe0, /* src_mask */
956 0xffffe0, /* dst_mask */
957 TRUE), /* pcrel_offset */
958
a06ea964
NC		 959 /* Get to the page for the GOT entry for the symbol
960 (G(S) - P) using an ADRP instruction. */
a6bb11b2 961 HOWTO (AARCH64_R (ADR_GOT_PAGE), /* type */
a06ea964
NC		 962 12, /* rightshift */
963 2, /* size (0 = byte, 1 = short, 2 = long) */
964 21, /* bitsize */
965 TRUE, /* pc_relative */
966 0, /* bitpos */
967 complain_overflow_dont, /* complain_on_overflow */
968 bfd_elf_generic_reloc, /* special_function */
a6bb11b2 969 AARCH64_R_STR (ADR_GOT_PAGE), /* name */
a06ea964
NC		 970 FALSE, /* partial_inplace */
971 0x1fffff, /* src_mask */
972 0x1fffff, /* dst_mask */
973 TRUE), /* pcrel_offset */
974
a6bb11b2
YZ		 975 /* LD64: GOT offset G(S) & 0xff8 */
976 HOWTO64 (AARCH64_R (LD64_GOT_LO12_NC), /* type */
a06ea964
NC		 977 3, /* rightshift */
978 2, /* size (0 = byte, 1 = short, 2 = long) */
979 12, /* bitsize */
980 FALSE, /* pc_relative */
981 0, /* bitpos */
982 complain_overflow_dont, /* complain_on_overflow */
983 bfd_elf_generic_reloc, /* special_function */
a6bb11b2 984 AARCH64_R_STR (LD64_GOT_LO12_NC), /* name */
a06ea964
NC		 985 FALSE, /* partial_inplace */
986 0xff8, /* src_mask */
987 0xff8, /* dst_mask */
a6bb11b2 988 FALSE), /* pcrel_offset */
a06ea964 989
a6bb11b2
YZ		 990 /* LD32: GOT offset G(S) & 0xffc */
991 HOWTO32 (AARCH64_R (LD32_GOT_LO12_NC), /* type */
992 2, /* rightshift */
993 2, /* size (0 = byte, 1 = short, 2 = long) */
994 12, /* bitsize */
995 FALSE, /* pc_relative */
996 0, /* bitpos */
997 complain_overflow_dont, /* complain_on_overflow */
998 bfd_elf_generic_reloc, /* special_function */
999 AARCH64_R_STR (LD32_GOT_LO12_NC), /* name */
1000 FALSE, /* partial_inplace */
1001 0xffc, /* src_mask */
1002 0xffc, /* dst_mask */
1003 FALSE), /* pcrel_offset */
a06ea964 1004
ca632371
RL		 1005 /* Lower 16 bits of GOT offset for the symbol. */
1006 HOWTO64 (AARCH64_R (MOVW_GOTOFF_G0_NC), /* type */
1007 0, /* rightshift */
1008 2, /* size (0 = byte, 1 = short, 2 = long) */
1009 16, /* bitsize */
1010 FALSE, /* pc_relative */
1011 0, /* bitpos */
1012 complain_overflow_dont, /* complain_on_overflow */
1013 bfd_elf_generic_reloc, /* special_function */
1014 AARCH64_R_STR (MOVW_GOTOFF_G0_NC), /* name */
1015 FALSE, /* partial_inplace */
1016 0xffff, /* src_mask */
1017 0xffff, /* dst_mask */
1018 FALSE), /* pcrel_offset */
1019
654248e7
RL		 1020 /* Higher 16 bits of GOT offset for the symbol. */
1021 HOWTO64 (AARCH64_R (MOVW_GOTOFF_G1), /* type */
1022 16, /* rightshift */
1023 2, /* size (0 = byte, 1 = short, 2 = long) */
1024 16, /* bitsize */
1025 FALSE, /* pc_relative */
1026 0, /* bitpos */
1027 complain_overflow_unsigned, /* complain_on_overflow */
1028 bfd_elf_generic_reloc, /* special_function */
1029 AARCH64_R_STR (MOVW_GOTOFF_G1), /* name */
1030 FALSE, /* partial_inplace */
1031 0xffff, /* src_mask */
1032 0xffff, /* dst_mask */
1033 FALSE), /* pcrel_offset */
1034
87f5fbcc
RL		 1035 /* LD64: GOT offset for the symbol. */
1036 HOWTO64 (AARCH64_R (LD64_GOTOFF_LO15), /* type */
1037 3, /* rightshift */
1038 2, /* size (0 = byte, 1 = short, 2 = long) */
1039 12, /* bitsize */
1040 FALSE, /* pc_relative */
1041 0, /* bitpos */
1042 complain_overflow_unsigned, /* complain_on_overflow */
1043 bfd_elf_generic_reloc, /* special_function */
1044 AARCH64_R_STR (LD64_GOTOFF_LO15), /* name */
1045 FALSE, /* partial_inplace */
1046 0x7ff8, /* src_mask */
1047 0x7ff8, /* dst_mask */
1048 FALSE), /* pcrel_offset */
1049
3d715ce4
JW		 1050 /* LD32: GOT offset to the page address of GOT table.
1051 (G(S) - PAGE (_GLOBAL_OFFSET_TABLE_)) & 0x5ffc. */
1052 HOWTO32 (AARCH64_R (LD32_GOTPAGE_LO14), /* type */
1053 2, /* rightshift */
1054 2, /* size (0 = byte, 1 = short, 2 = long) */
1055 12, /* bitsize */
1056 FALSE, /* pc_relative */
1057 0, /* bitpos */
1058 complain_overflow_unsigned, /* complain_on_overflow */
1059 bfd_elf_generic_reloc, /* special_function */
1060 AARCH64_R_STR (LD32_GOTPAGE_LO14), /* name */
1061 FALSE, /* partial_inplace */
1062 0x5ffc, /* src_mask */
1063 0x5ffc, /* dst_mask */
1064 FALSE), /* pcrel_offset */
1065
a921b5bd
JW		 1066 /* LD64: GOT offset to the page address of GOT table.
1067 (G(S) - PAGE (_GLOBAL_OFFSET_TABLE_)) & 0x7ff8. */
1068 HOWTO64 (AARCH64_R (LD64_GOTPAGE_LO15), /* type */
1069 3, /* rightshift */
1070 2, /* size (0 = byte, 1 = short, 2 = long) */
1071 12, /* bitsize */
1072 FALSE, /* pc_relative */
1073 0, /* bitpos */
1074 complain_overflow_unsigned, /* complain_on_overflow */
1075 bfd_elf_generic_reloc, /* special_function */
1076 AARCH64_R_STR (LD64_GOTPAGE_LO15), /* name */
1077 FALSE, /* partial_inplace */
1078 0x7ff8, /* src_mask */
1079 0x7ff8, /* dst_mask */
1080 FALSE), /* pcrel_offset */
1081
a06ea964
NC		 1082 /* Get to the page for the GOT entry for the symbol
1083 (G(S) - P) using an ADRP instruction. */
a6bb11b2 1084 HOWTO (AARCH64_R (TLSGD_ADR_PAGE21), /* type */
a06ea964
NC		 1085 12, /* rightshift */
1086 2, /* size (0 = byte, 1 = short, 2 = long) */
1087 21, /* bitsize */
1088 TRUE, /* pc_relative */
1089 0, /* bitpos */
1090 complain_overflow_dont, /* complain_on_overflow */
1091 bfd_elf_generic_reloc, /* special_function */
a6bb11b2 1092 AARCH64_R_STR (TLSGD_ADR_PAGE21), /* name */
a06ea964
NC		 1093 FALSE, /* partial_inplace */
1094 0x1fffff, /* src_mask */
1095 0x1fffff, /* dst_mask */
1096 TRUE), /* pcrel_offset */
1097
3c12b054
MS		 1098 HOWTO (AARCH64_R (TLSGD_ADR_PREL21), /* type */
1099 0, /* rightshift */
1100 2, /* size (0 = byte, 1 = short, 2 = long) */
1101 21, /* bitsize */
1102 TRUE, /* pc_relative */
1103 0, /* bitpos */
1104 complain_overflow_dont, /* complain_on_overflow */
1105 bfd_elf_generic_reloc, /* special_function */
1106 AARCH64_R_STR (TLSGD_ADR_PREL21), /* name */
1107 FALSE, /* partial_inplace */
1108 0x1fffff, /* src_mask */
1109 0x1fffff, /* dst_mask */
1110 TRUE), /* pcrel_offset */
1111
a06ea964 1112 /* ADD: GOT offset G(S) & 0xff8 [no overflow check] */
a6bb11b2 1113 HOWTO (AARCH64_R (TLSGD_ADD_LO12_NC), /* type */
a06ea964
NC		 1114 0, /* rightshift */
1115 2, /* size (0 = byte, 1 = short, 2 = long) */
1116 12, /* bitsize */
1117 FALSE, /* pc_relative */
1118 0, /* bitpos */
1119 complain_overflow_dont, /* complain_on_overflow */
1120 bfd_elf_generic_reloc, /* special_function */
a6bb11b2 1121 AARCH64_R_STR (TLSGD_ADD_LO12_NC), /* name */
a06ea964
NC		 1122 FALSE, /* partial_inplace */
1123 0xfff, /* src_mask */
1124 0xfff, /* dst_mask */
1125 FALSE), /* pcrel_offset */
1126
3e8286c0
RL		 1127 /* Lower 16 bits of GOT offset to tls_index. */
1128 HOWTO64 (AARCH64_R (TLSGD_MOVW_G0_NC), /* type */
1129 0, /* rightshift */
1130 2, /* size (0 = byte, 1 = short, 2 = long) */
1131 16, /* bitsize */
1132 FALSE, /* pc_relative */
1133 0, /* bitpos */
1134 complain_overflow_dont, /* complain_on_overflow */
1135 bfd_elf_generic_reloc, /* special_function */
1136 AARCH64_R_STR (TLSGD_MOVW_G0_NC), /* name */
1137 FALSE, /* partial_inplace */
1138 0xffff, /* src_mask */
1139 0xffff, /* dst_mask */
1140 FALSE), /* pcrel_offset */
1141
1aa66fb1
RL		 1142 /* Higher 16 bits of GOT offset to tls_index. */
1143 HOWTO64 (AARCH64_R (TLSGD_MOVW_G1), /* type */
1144 16, /* rightshift */
1145 2, /* size (0 = byte, 1 = short, 2 = long) */
1146 16, /* bitsize */
1147 FALSE, /* pc_relative */
1148 0, /* bitpos */
1149 complain_overflow_unsigned, /* complain_on_overflow */
1150 bfd_elf_generic_reloc, /* special_function */
1151 AARCH64_R_STR (TLSGD_MOVW_G1), /* name */
1152 FALSE, /* partial_inplace */
1153 0xffff, /* src_mask */
1154 0xffff, /* dst_mask */
1155 FALSE), /* pcrel_offset */
1156
a6bb11b2 1157 HOWTO (AARCH64_R (TLSIE_ADR_GOTTPREL_PAGE21), /* type */
a06ea964
NC		 1158 12, /* rightshift */
1159 2, /* size (0 = byte, 1 = short, 2 = long) */
1160 21, /* bitsize */
1161 FALSE, /* pc_relative */
1162 0, /* bitpos */
1163 complain_overflow_dont, /* complain_on_overflow */
1164 bfd_elf_generic_reloc, /* special_function */
a6bb11b2 1165 AARCH64_R_STR (TLSIE_ADR_GOTTPREL_PAGE21), /* name */
a06ea964
NC		 1166 FALSE, /* partial_inplace */
1167 0x1fffff, /* src_mask */
1168 0x1fffff, /* dst_mask */
1169 FALSE), /* pcrel_offset */
1170
a6bb11b2 1171 HOWTO64 (AARCH64_R (TLSIE_LD64_GOTTPREL_LO12_NC), /* type */
a06ea964
NC		 1172 3, /* rightshift */
1173 2, /* size (0 = byte, 1 = short, 2 = long) */
1174 12, /* bitsize */
1175 FALSE, /* pc_relative */
1176 0, /* bitpos */
1177 complain_overflow_dont, /* complain_on_overflow */
1178 bfd_elf_generic_reloc, /* special_function */
a6bb11b2 1179 AARCH64_R_STR (TLSIE_LD64_GOTTPREL_LO12_NC), /* name */
a06ea964
NC		 1180 FALSE, /* partial_inplace */
1181 0xff8, /* src_mask */
1182 0xff8, /* dst_mask */
1183 FALSE), /* pcrel_offset */
1184
a6bb11b2
YZ		 1185 HOWTO32 (AARCH64_R (TLSIE_LD32_GOTTPREL_LO12_NC), /* type */
1186 2, /* rightshift */
1187 2, /* size (0 = byte, 1 = short, 2 = long) */
1188 12, /* bitsize */
1189 FALSE, /* pc_relative */
1190 0, /* bitpos */
1191 complain_overflow_dont, /* complain_on_overflow */
1192 bfd_elf_generic_reloc, /* special_function */
1193 AARCH64_R_STR (TLSIE_LD32_GOTTPREL_LO12_NC), /* name */
1194 FALSE, /* partial_inplace */
1195 0xffc, /* src_mask */
1196 0xffc, /* dst_mask */
1197 FALSE), /* pcrel_offset */
1198
1199 HOWTO (AARCH64_R (TLSIE_LD_GOTTPREL_PREL19), /* type */
bb3f9ed8 1200 2, /* rightshift */
a06ea964 1201 2, /* size (0 = byte, 1 = short, 2 = long) */
043bf05a 1202 19, /* bitsize */
a06ea964
NC		 1203 FALSE, /* pc_relative */
1204 0, /* bitpos */
1205 complain_overflow_dont, /* complain_on_overflow */
1206 bfd_elf_generic_reloc, /* special_function */
a6bb11b2 1207 AARCH64_R_STR (TLSIE_LD_GOTTPREL_PREL19), /* name */
a06ea964
NC		 1208 FALSE, /* partial_inplace */
1209 0x1ffffc, /* src_mask */
1210 0x1ffffc, /* dst_mask */
1211 FALSE), /* pcrel_offset */
1212
3b957e5b
RL		 1213 HOWTO64 (AARCH64_R (TLSIE_MOVW_GOTTPREL_G0_NC), /* type */
1214 0, /* rightshift */
1215 2, /* size (0 = byte, 1 = short, 2 = long) */
1216 16, /* bitsize */
1217 FALSE, /* pc_relative */
1218 0, /* bitpos */
1219 complain_overflow_dont, /* complain_on_overflow */
1220 bfd_elf_generic_reloc, /* special_function */
1221 AARCH64_R_STR (TLSIE_MOVW_GOTTPREL_G0_NC), /* name */
1222 FALSE, /* partial_inplace */
1223 0xffff, /* src_mask */
1224 0xffff, /* dst_mask */
1225 FALSE), /* pcrel_offset */
1226
1227 HOWTO64 (AARCH64_R (TLSIE_MOVW_GOTTPREL_G1), /* type */
1228 16, /* rightshift */
1229 2, /* size (0 = byte, 1 = short, 2 = long) */
1230 16, /* bitsize */
1231 FALSE, /* pc_relative */
1232 0, /* bitpos */
1233 complain_overflow_unsigned, /* complain_on_overflow */
1234 bfd_elf_generic_reloc, /* special_function */
1235 AARCH64_R_STR (TLSIE_MOVW_GOTTPREL_G1), /* name */
1236 FALSE, /* partial_inplace */
1237 0xffff, /* src_mask */
1238 0xffff, /* dst_mask */
1239 FALSE), /* pcrel_offset */
1240
49df5539
JW		 1241 /* ADD: bit[23:12] of byte offset to module TLS base address. */
1242 HOWTO (AARCH64_R (TLSLD_ADD_DTPREL_HI12), /* type */
1243 12, /* rightshift */
1244 2, /* size (0 = byte, 1 = short, 2 = long) */
1245 12, /* bitsize */
1246 FALSE, /* pc_relative */
1247 0, /* bitpos */
1248 complain_overflow_unsigned, /* complain_on_overflow */
1249 bfd_elf_generic_reloc, /* special_function */
1250 AARCH64_R_STR (TLSLD_ADD_DTPREL_HI12), /* name */
1251 FALSE, /* partial_inplace */
1252 0xfff, /* src_mask */
1253 0xfff, /* dst_mask */
1254 FALSE), /* pcrel_offset */
1255
70151fb5
JW		 1256 /* Unsigned 12 bit byte offset to module TLS base address. */
1257 HOWTO (AARCH64_R (TLSLD_ADD_DTPREL_LO12), /* type */
1258 0, /* rightshift */
1259 2, /* size (0 = byte, 1 = short, 2 = long) */
1260 12, /* bitsize */
1261 FALSE, /* pc_relative */
1262 0, /* bitpos */
1263 complain_overflow_unsigned, /* complain_on_overflow */
1264 bfd_elf_generic_reloc, /* special_function */
1265 AARCH64_R_STR (TLSLD_ADD_DTPREL_LO12), /* name */
1266 FALSE, /* partial_inplace */
1267 0xfff, /* src_mask */
1268 0xfff, /* dst_mask */
1269 FALSE), /* pcrel_offset */
13289c10
JW		 1270
1271 /* No overflow check version of BFD_RELOC_AARCH64_TLSLD_ADD_DTPREL_LO12. */
1272 HOWTO (AARCH64_R (TLSLD_ADD_DTPREL_LO12_NC), /* type */
1273 0, /* rightshift */
1274 2, /* size (0 = byte, 1 = short, 2 = long) */
1275 12, /* bitsize */
1276 FALSE, /* pc_relative */
1277 0, /* bitpos */
1278 complain_overflow_dont, /* complain_on_overflow */
1279 bfd_elf_generic_reloc, /* special_function */
1280 AARCH64_R_STR (TLSLD_ADD_DTPREL_LO12_NC), /* name */
1281 FALSE, /* partial_inplace */
1282 0xfff, /* src_mask */
1283 0xfff, /* dst_mask */
1284 FALSE), /* pcrel_offset */
70151fb5 1285
a12fad50
JW		 1286 /* ADD: GOT offset G(S) & 0xff8 [no overflow check] */
1287 HOWTO (AARCH64_R (TLSLD_ADD_LO12_NC), /* type */
1288 0, /* rightshift */
1289 2, /* size (0 = byte, 1 = short, 2 = long) */
1290 12, /* bitsize */
1291 FALSE, /* pc_relative */
1292 0, /* bitpos */
1293 complain_overflow_dont, /* complain_on_overflow */
1294 bfd_elf_generic_reloc, /* special_function */
1295 AARCH64_R_STR (TLSLD_ADD_LO12_NC), /* name */
1296 FALSE, /* partial_inplace */
1297 0xfff, /* src_mask */
1298 0xfff, /* dst_mask */
1299 FALSE), /* pcrel_offset */
1300
1107e076
JW		 1301 /* Get to the page for the GOT entry for the symbol
1302 (G(S) - P) using an ADRP instruction. */
1303 HOWTO (AARCH64_R (TLSLD_ADR_PAGE21), /* type */
1304 12, /* rightshift */
1305 2, /* size (0 = byte, 1 = short, 2 = long) */
1306 21, /* bitsize */
1307 TRUE, /* pc_relative */
1308 0, /* bitpos */
1309 complain_overflow_signed, /* complain_on_overflow */
1310 bfd_elf_generic_reloc, /* special_function */
1311 AARCH64_R_STR (TLSLD_ADR_PAGE21), /* name */
1312 FALSE, /* partial_inplace */
1313 0x1fffff, /* src_mask */
1314 0x1fffff, /* dst_mask */
1315 TRUE), /* pcrel_offset */
1316
6c37fedc
JW		 1317 HOWTO (AARCH64_R (TLSLD_ADR_PREL21), /* type */
1318 0, /* rightshift */
1319 2, /* size (0 = byte, 1 = short, 2 = long) */
1320 21, /* bitsize */
1321 TRUE, /* pc_relative */
1322 0, /* bitpos */
1323 complain_overflow_signed, /* complain_on_overflow */
1324 bfd_elf_generic_reloc, /* special_function */
1325 AARCH64_R_STR (TLSLD_ADR_PREL21), /* name */
1326 FALSE, /* partial_inplace */
1327 0x1fffff, /* src_mask */
1328 0x1fffff, /* dst_mask */
1329 TRUE), /* pcrel_offset */
1330
4c562523
JW		 1331 /* LD/ST16: bit[11:1] of byte offset to module TLS base address. */
1332 HOWTO64 (AARCH64_R (TLSLD_LDST16_DTPREL_LO12), /* type */
1333 1, /* rightshift */
1334 2, /* size (0 = byte, 1 = short, 2 = long) */
1335 11, /* bitsize */
1336 FALSE, /* pc_relative */
1337 10, /* bitpos */
1338 complain_overflow_unsigned, /* complain_on_overflow */
1339 bfd_elf_generic_reloc, /* special_function */
1340 AARCH64_R_STR (TLSLD_LDST16_DTPREL_LO12), /* name */
1341 FALSE, /* partial_inplace */
1342 0x1ffc00, /* src_mask */
1343 0x1ffc00, /* dst_mask */
1344 FALSE), /* pcrel_offset */
1345
1346 /* Same as BFD_RELOC_AARCH64_TLSLD_LDST16_DTPREL_LO12, but no overflow check. */
1347 HOWTO64 (AARCH64_R (TLSLD_LDST16_DTPREL_LO12_NC), /* type */
1348 1, /* rightshift */
1349 2, /* size (0 = byte, 1 = short, 2 = long) */
1350 11, /* bitsize */
1351 FALSE, /* pc_relative */
1352 10, /* bitpos */
1353 complain_overflow_dont, /* complain_on_overflow */
1354 bfd_elf_generic_reloc, /* special_function */
1355 AARCH64_R_STR (TLSLD_LDST16_DTPREL_LO12_NC), /* name */
1356 FALSE, /* partial_inplace */
1357 0x1ffc00, /* src_mask */
1358 0x1ffc00, /* dst_mask */
1359 FALSE), /* pcrel_offset */
1360
1361 /* LD/ST32: bit[11:2] of byte offset to module TLS base address. */
1362 HOWTO64 (AARCH64_R (TLSLD_LDST32_DTPREL_LO12), /* type */
1363 2, /* rightshift */
1364 2, /* size (0 = byte, 1 = short, 2 = long) */
1365 10, /* bitsize */
1366 FALSE, /* pc_relative */
1367 10, /* bitpos */
1368 complain_overflow_unsigned, /* complain_on_overflow */
1369 bfd_elf_generic_reloc, /* special_function */
1370 AARCH64_R_STR (TLSLD_LDST32_DTPREL_LO12), /* name */
1371 FALSE, /* partial_inplace */
1372 0x3ffc00, /* src_mask */
1373 0x3ffc00, /* dst_mask */
1374 FALSE), /* pcrel_offset */
1375
1376 /* Same as BFD_RELOC_AARCH64_TLSLD_LDST32_DTPREL_LO12, but no overflow check. */
1377 HOWTO64 (AARCH64_R (TLSLD_LDST32_DTPREL_LO12_NC), /* type */
1378 2, /* rightshift */
1379 2, /* size (0 = byte, 1 = short, 2 = long) */
1380 10, /* bitsize */
1381 FALSE, /* pc_relative */
1382 10, /* bitpos */
1383 complain_overflow_dont, /* complain_on_overflow */
1384 bfd_elf_generic_reloc, /* special_function */
1385 AARCH64_R_STR (TLSLD_LDST32_DTPREL_LO12_NC), /* name */
1386 FALSE, /* partial_inplace */
1387 0xffc00, /* src_mask */
1388 0xffc00, /* dst_mask */
1389 FALSE), /* pcrel_offset */
1390
1391 /* LD/ST64: bit[11:3] of byte offset to module TLS base address. */
1392 HOWTO64 (AARCH64_R (TLSLD_LDST64_DTPREL_LO12), /* type */
1393 3, /* rightshift */
1394 2, /* size (0 = byte, 1 = short, 2 = long) */
1395 9, /* bitsize */
1396 FALSE, /* pc_relative */
1397 10, /* bitpos */
1398 complain_overflow_unsigned, /* complain_on_overflow */
1399 bfd_elf_generic_reloc, /* special_function */
1400 AARCH64_R_STR (TLSLD_LDST64_DTPREL_LO12), /* name */
1401 FALSE, /* partial_inplace */
1402 0x3ffc00, /* src_mask */
1403 0x3ffc00, /* dst_mask */
1404 FALSE), /* pcrel_offset */
1405
1406 /* Same as BFD_RELOC_AARCH64_TLSLD_LDST64_DTPREL_LO12, but no overflow check. */
1407 HOWTO64 (AARCH64_R (TLSLD_LDST64_DTPREL_LO12_NC), /* type */
1408 3, /* rightshift */
1409 2, /* size (0 = byte, 1 = short, 2 = long) */
1410 9, /* bitsize */
1411 FALSE, /* pc_relative */
1412 10, /* bitpos */
1413 complain_overflow_dont, /* complain_on_overflow */
1414 bfd_elf_generic_reloc, /* special_function */
1415 AARCH64_R_STR (TLSLD_LDST64_DTPREL_LO12_NC), /* name */
1416 FALSE, /* partial_inplace */
1417 0x7fc00, /* src_mask */
1418 0x7fc00, /* dst_mask */
1419 FALSE), /* pcrel_offset */
1420
1421 /* LD/ST8: bit[11:0] of byte offset to module TLS base address. */
1422 HOWTO64 (AARCH64_R (TLSLD_LDST8_DTPREL_LO12), /* type */
1423 0, /* rightshift */
1424 2, /* size (0 = byte, 1 = short, 2 = long) */
1425 12, /* bitsize */
1426 FALSE, /* pc_relative */
1427 10, /* bitpos */
1428 complain_overflow_unsigned, /* complain_on_overflow */
1429 bfd_elf_generic_reloc, /* special_function */
1430 AARCH64_R_STR (TLSLD_LDST8_DTPREL_LO12), /* name */
1431 FALSE, /* partial_inplace */
1432 0x3ffc00, /* src_mask */
1433 0x3ffc00, /* dst_mask */
1434 FALSE), /* pcrel_offset */
1435
1436 /* Same as BFD_RELOC_AARCH64_TLSLD_LDST8_DTPREL_LO12, but no overflow check. */
1437 HOWTO64 (AARCH64_R (TLSLD_LDST8_DTPREL_LO12_NC), /* type */
1438 0, /* rightshift */
1439 2, /* size (0 = byte, 1 = short, 2 = long) */
1440 12, /* bitsize */
1441 FALSE, /* pc_relative */
1442 10, /* bitpos */
1443 complain_overflow_dont, /* complain_on_overflow */
1444 bfd_elf_generic_reloc, /* special_function */
1445 AARCH64_R_STR (TLSLD_LDST8_DTPREL_LO12_NC), /* name */
1446 FALSE, /* partial_inplace */
1447 0x3ffc00, /* src_mask */
1448 0x3ffc00, /* dst_mask */
1449 FALSE), /* pcrel_offset */
1450
49df5539
JW		 1451 /* MOVZ: bit[15:0] of byte offset to module TLS base address. */
1452 HOWTO (AARCH64_R (TLSLD_MOVW_DTPREL_G0), /* type */
1453 0, /* rightshift */
1454 2, /* size (0 = byte, 1 = short, 2 = long) */
1455 16, /* bitsize */
1456 FALSE, /* pc_relative */
1457 0, /* bitpos */
1458 complain_overflow_unsigned, /* complain_on_overflow */
1459 bfd_elf_generic_reloc, /* special_function */
1460 AARCH64_R_STR (TLSLD_MOVW_DTPREL_G0), /* name */
1461 FALSE, /* partial_inplace */
1462 0xffff, /* src_mask */
1463 0xffff, /* dst_mask */
1464 FALSE), /* pcrel_offset */
1465
1466 /* No overflow check version of BFD_RELOC_AARCH64_TLSLD_MOVW_DTPREL_G0. */
1467 HOWTO (AARCH64_R (TLSLD_MOVW_DTPREL_G0_NC), /* type */
1468 0, /* rightshift */
1469 2, /* size (0 = byte, 1 = short, 2 = long) */
1470 16, /* bitsize */
1471 FALSE, /* pc_relative */
1472 0, /* bitpos */
1473 complain_overflow_dont, /* complain_on_overflow */
1474 bfd_elf_generic_reloc, /* special_function */
1475 AARCH64_R_STR (TLSLD_MOVW_DTPREL_G0_NC), /* name */
1476 FALSE, /* partial_inplace */
1477 0xffff, /* src_mask */
1478 0xffff, /* dst_mask */
1479 FALSE), /* pcrel_offset */
1480
1481 /* MOVZ: bit[31:16] of byte offset to module TLS base address. */
1482 HOWTO (AARCH64_R (TLSLD_MOVW_DTPREL_G1), /* type */
1483 16, /* rightshift */
1484 2, /* size (0 = byte, 1 = short, 2 = long) */
1485 16, /* bitsize */
1486 FALSE, /* pc_relative */
1487 0, /* bitpos */
1488 complain_overflow_unsigned, /* complain_on_overflow */
1489 bfd_elf_generic_reloc, /* special_function */
1490 AARCH64_R_STR (TLSLD_MOVW_DTPREL_G1), /* name */
1491 FALSE, /* partial_inplace */
1492 0xffff, /* src_mask */
1493 0xffff, /* dst_mask */
1494 FALSE), /* pcrel_offset */
1495
1496 /* No overflow check version of BFD_RELOC_AARCH64_TLSLD_MOVW_DTPREL_G1. */
1497 HOWTO64 (AARCH64_R (TLSLD_MOVW_DTPREL_G1_NC), /* type */
1498 16, /* rightshift */
1499 2, /* size (0 = byte, 1 = short, 2 = long) */
1500 16, /* bitsize */
1501 FALSE, /* pc_relative */
1502 0, /* bitpos */
1503 complain_overflow_dont, /* complain_on_overflow */
1504 bfd_elf_generic_reloc, /* special_function */
1505 AARCH64_R_STR (TLSLD_MOVW_DTPREL_G1_NC), /* name */
1506 FALSE, /* partial_inplace */
1507 0xffff, /* src_mask */
1508 0xffff, /* dst_mask */
1509 FALSE), /* pcrel_offset */
1510
1511 /* MOVZ: bit[47:32] of byte offset to module TLS base address. */
1512 HOWTO64 (AARCH64_R (TLSLD_MOVW_DTPREL_G2), /* type */
1513 32, /* rightshift */
1514 2, /* size (0 = byte, 1 = short, 2 = long) */
1515 16, /* bitsize */
1516 FALSE, /* pc_relative */
1517 0, /* bitpos */
1518 complain_overflow_unsigned, /* complain_on_overflow */
1519 bfd_elf_generic_reloc, /* special_function */
1520 AARCH64_R_STR (TLSLD_MOVW_DTPREL_G2), /* name */
1521 FALSE, /* partial_inplace */
1522 0xffff, /* src_mask */
1523 0xffff, /* dst_mask */
1524 FALSE), /* pcrel_offset */
1525
a6bb11b2 1526 HOWTO64 (AARCH64_R (TLSLE_MOVW_TPREL_G2), /* type */
bb3f9ed8 1527 32, /* rightshift */
a06ea964 1528 2, /* size (0 = byte, 1 = short, 2 = long) */
07875fbc 1529 16, /* bitsize */
a06ea964
NC		 1530 FALSE, /* pc_relative */
1531 0, /* bitpos */
0172429c 1532 complain_overflow_unsigned, /* complain_on_overflow */
a06ea964 1533 bfd_elf_generic_reloc, /* special_function */
a6bb11b2 1534 AARCH64_R_STR (TLSLE_MOVW_TPREL_G2), /* name */
a06ea964
NC		 1535 FALSE, /* partial_inplace */
1536 0xffff, /* src_mask */
1537 0xffff, /* dst_mask */
1538 FALSE), /* pcrel_offset */
1539
a6bb11b2 1540 HOWTO (AARCH64_R (TLSLE_MOVW_TPREL_G1), /* type */
bb3f9ed8 1541 16, /* rightshift */
a06ea964 1542 2, /* size (0 = byte, 1 = short, 2 = long) */
07875fbc 1543 16, /* bitsize */
a06ea964
NC		 1544 FALSE, /* pc_relative */
1545 0, /* bitpos */
1546 complain_overflow_dont, /* complain_on_overflow */
1547 bfd_elf_generic_reloc, /* special_function */
a6bb11b2 1548 AARCH64_R_STR (TLSLE_MOVW_TPREL_G1), /* name */
a06ea964
NC		 1549 FALSE, /* partial_inplace */
1550 0xffff, /* src_mask */
1551 0xffff, /* dst_mask */
1552 FALSE), /* pcrel_offset */
1553
a6bb11b2 1554 HOWTO64 (AARCH64_R (TLSLE_MOVW_TPREL_G1_NC), /* type */
bb3f9ed8 1555 16, /* rightshift */
a06ea964 1556 2, /* size (0 = byte, 1 = short, 2 = long) */
07875fbc 1557 16, /* bitsize */
a06ea964
NC		 1558 FALSE, /* pc_relative */
1559 0, /* bitpos */
1560 complain_overflow_dont, /* complain_on_overflow */
1561 bfd_elf_generic_reloc, /* special_function */
a6bb11b2 1562 AARCH64_R_STR (TLSLE_MOVW_TPREL_G1_NC), /* name */
a06ea964
NC		 1563 FALSE, /* partial_inplace */
1564 0xffff, /* src_mask */
1565 0xffff, /* dst_mask */
1566 FALSE), /* pcrel_offset */
1567
a6bb11b2 1568 HOWTO (AARCH64_R (TLSLE_MOVW_TPREL_G0), /* type */
a06ea964
NC		 1569 0, /* rightshift */
1570 2, /* size (0 = byte, 1 = short, 2 = long) */
07875fbc 1571 16, /* bitsize */
a06ea964
NC		 1572 FALSE, /* pc_relative */
1573 0, /* bitpos */
1574 complain_overflow_dont, /* complain_on_overflow */
1575 bfd_elf_generic_reloc, /* special_function */
a6bb11b2 1576 AARCH64_R_STR (TLSLE_MOVW_TPREL_G0), /* name */
a06ea964
NC		 1577 FALSE, /* partial_inplace */
1578 0xffff, /* src_mask */
1579 0xffff, /* dst_mask */
1580 FALSE), /* pcrel_offset */
1581
a6bb11b2 1582 HOWTO (AARCH64_R (TLSLE_MOVW_TPREL_G0_NC), /* type */
a06ea964
NC		 1583 0, /* rightshift */
1584 2, /* size (0 = byte, 1 = short, 2 = long) */
07875fbc 1585 16, /* bitsize */
a06ea964
NC		 1586 FALSE, /* pc_relative */
1587 0, /* bitpos */
1588 complain_overflow_dont, /* complain_on_overflow */
1589 bfd_elf_generic_reloc, /* special_function */
a6bb11b2 1590 AARCH64_R_STR (TLSLE_MOVW_TPREL_G0_NC), /* name */
a06ea964
NC		 1591 FALSE, /* partial_inplace */
1592 0xffff, /* src_mask */
1593 0xffff, /* dst_mask */
1594 FALSE), /* pcrel_offset */
1595
a6bb11b2 1596 HOWTO (AARCH64_R (TLSLE_ADD_TPREL_HI12), /* type */
bb3f9ed8 1597 12, /* rightshift */
a06ea964
NC		 1598 2, /* size (0 = byte, 1 = short, 2 = long) */
1599 12, /* bitsize */
1600 FALSE, /* pc_relative */
1601 0, /* bitpos */
bab91cce 1602 complain_overflow_unsigned, /* complain_on_overflow */
a06ea964 1603 bfd_elf_generic_reloc, /* special_function */
a6bb11b2 1604 AARCH64_R_STR (TLSLE_ADD_TPREL_HI12), /* name */
a06ea964
NC		 1605 FALSE, /* partial_inplace */
1606 0xfff, /* src_mask */
1607 0xfff, /* dst_mask */
1608 FALSE), /* pcrel_offset */
1609
a6bb11b2 1610 HOWTO (AARCH64_R (TLSLE_ADD_TPREL_LO12), /* type */
a06ea964
NC		 1611 0, /* rightshift */
1612 2, /* size (0 = byte, 1 = short, 2 = long) */
1613 12, /* bitsize */
1614 FALSE, /* pc_relative */
1615 0, /* bitpos */
36e6c140 1616 complain_overflow_unsigned, /* complain_on_overflow */
a06ea964 1617 bfd_elf_generic_reloc, /* special_function */
a6bb11b2 1618 AARCH64_R_STR (TLSLE_ADD_TPREL_LO12), /* name */
a06ea964
NC		 1619 FALSE, /* partial_inplace */
1620 0xfff, /* src_mask */
1621 0xfff, /* dst_mask */
1622 FALSE), /* pcrel_offset */
1623
a6bb11b2 1624 HOWTO (AARCH64_R (TLSLE_ADD_TPREL_LO12_NC), /* type */
a06ea964
NC		 1625 0, /* rightshift */
1626 2, /* size (0 = byte, 1 = short, 2 = long) */
1627 12, /* bitsize */
1628 FALSE, /* pc_relative */
1629 0, /* bitpos */
1630 complain_overflow_dont, /* complain_on_overflow */
1631 bfd_elf_generic_reloc, /* special_function */
a6bb11b2 1632 AARCH64_R_STR (TLSLE_ADD_TPREL_LO12_NC), /* name */
a06ea964
NC		 1633 FALSE, /* partial_inplace */
1634 0xfff, /* src_mask */
1635 0xfff, /* dst_mask */
1636 FALSE), /* pcrel_offset */
a06ea964 1637
a6bb11b2 1638 HOWTO (AARCH64_R (TLSDESC_LD_PREL19), /* type */
bb3f9ed8 1639 2, /* rightshift */
a06ea964 1640 2, /* size (0 = byte, 1 = short, 2 = long) */
1ada945d 1641 19, /* bitsize */
a06ea964
NC		 1642 TRUE, /* pc_relative */
1643 0, /* bitpos */
1644 complain_overflow_dont, /* complain_on_overflow */
1645 bfd_elf_generic_reloc, /* special_function */
a6bb11b2 1646 AARCH64_R_STR (TLSDESC_LD_PREL19), /* name */
a06ea964 1647 FALSE, /* partial_inplace */
1ada945d
MS		 1648 0x0ffffe0, /* src_mask */
1649 0x0ffffe0, /* dst_mask */
a06ea964
NC		 1650 TRUE), /* pcrel_offset */
1651
a6bb11b2 1652 HOWTO (AARCH64_R (TLSDESC_ADR_PREL21), /* type */
a06ea964
NC		 1653 0, /* rightshift */
1654 2, /* size (0 = byte, 1 = short, 2 = long) */
1655 21, /* bitsize */
1656 TRUE, /* pc_relative */
1657 0, /* bitpos */
1658 complain_overflow_dont, /* complain_on_overflow */
1659 bfd_elf_generic_reloc, /* special_function */
a6bb11b2 1660 AARCH64_R_STR (TLSDESC_ADR_PREL21), /* name */
a06ea964
NC		 1661 FALSE, /* partial_inplace */
1662 0x1fffff, /* src_mask */
1663 0x1fffff, /* dst_mask */
1664 TRUE), /* pcrel_offset */
1665
1666 /* Get to the page for the GOT entry for the symbol
1667 (G(S) - P) using an ADRP instruction. */
a6bb11b2 1668 HOWTO (AARCH64_R (TLSDESC_ADR_PAGE21), /* type */
a06ea964
NC		 1669 12, /* rightshift */
1670 2, /* size (0 = byte, 1 = short, 2 = long) */
1671 21, /* bitsize */
1672 TRUE, /* pc_relative */
1673 0, /* bitpos */
1674 complain_overflow_dont, /* complain_on_overflow */
1675 bfd_elf_generic_reloc, /* special_function */
a6bb11b2 1676 AARCH64_R_STR (TLSDESC_ADR_PAGE21), /* name */
a06ea964
NC		 1677 FALSE, /* partial_inplace */
1678 0x1fffff, /* src_mask */
1679 0x1fffff, /* dst_mask */
1680 TRUE), /* pcrel_offset */
1681
a6bb11b2 1682 /* LD64: GOT offset G(S) & 0xff8. */
f955cccf 1683 HOWTO64 (AARCH64_R (TLSDESC_LD64_LO12), /* type */
a06ea964
NC		 1684 3, /* rightshift */
1685 2, /* size (0 = byte, 1 = short, 2 = long) */
1686 12, /* bitsize */
1687 FALSE, /* pc_relative */
1688 0, /* bitpos */
1689 complain_overflow_dont, /* complain_on_overflow */
1690 bfd_elf_generic_reloc, /* special_function */
f955cccf 1691 AARCH64_R_STR (TLSDESC_LD64_LO12), /* name */
a06ea964 1692 FALSE, /* partial_inplace */
a6bb11b2
YZ		 1693 0xff8, /* src_mask */
1694 0xff8, /* dst_mask */
1695 FALSE), /* pcrel_offset */
1696
1697 /* LD32: GOT offset G(S) & 0xffc. */
1698 HOWTO32 (AARCH64_R (TLSDESC_LD32_LO12_NC), /* type */
1699 2, /* rightshift */
1700 2, /* size (0 = byte, 1 = short, 2 = long) */
1701 12, /* bitsize */
1702 FALSE, /* pc_relative */
1703 0, /* bitpos */
1704 complain_overflow_dont, /* complain_on_overflow */
1705 bfd_elf_generic_reloc, /* special_function */
1706 AARCH64_R_STR (TLSDESC_LD32_LO12_NC), /* name */
1707 FALSE, /* partial_inplace */
1708 0xffc, /* src_mask */
1709 0xffc, /* dst_mask */
a06ea964
NC		 1710 FALSE), /* pcrel_offset */
1711
1712 /* ADD: GOT offset G(S) & 0xfff. */
f955cccf 1713 HOWTO (AARCH64_R (TLSDESC_ADD_LO12), /* type */
a06ea964
NC		 1714 0, /* rightshift */
1715 2, /* size (0 = byte, 1 = short, 2 = long) */
1716 12, /* bitsize */
1717 FALSE, /* pc_relative */
1718 0, /* bitpos */
f955cccf 1719 complain_overflow_dont,/* complain_on_overflow */
a06ea964 1720 bfd_elf_generic_reloc, /* special_function */
f955cccf 1721 AARCH64_R_STR (TLSDESC_ADD_LO12), /* name */
a06ea964
NC		 1722 FALSE, /* partial_inplace */
1723 0xfff, /* src_mask */
1724 0xfff, /* dst_mask */
1725 FALSE), /* pcrel_offset */
1726
a6bb11b2 1727 HOWTO64 (AARCH64_R (TLSDESC_OFF_G1), /* type */
bb3f9ed8 1728 16, /* rightshift */
a06ea964
NC		 1729 2, /* size (0 = byte, 1 = short, 2 = long) */
1730 12, /* bitsize */
1731 FALSE, /* pc_relative */
1732 0, /* bitpos */
43a357f9 1733 complain_overflow_unsigned, /* complain_on_overflow */
a06ea964 1734 bfd_elf_generic_reloc, /* special_function */
a6bb11b2 1735 AARCH64_R_STR (TLSDESC_OFF_G1), /* name */
a06ea964
NC		 1736 FALSE, /* partial_inplace */
1737 0xffff, /* src_mask */
1738 0xffff, /* dst_mask */
1739 FALSE), /* pcrel_offset */
1740
a6bb11b2 1741 HOWTO64 (AARCH64_R (TLSDESC_OFF_G0_NC), /* type */
a06ea964
NC		 1742 0, /* rightshift */
1743 2, /* size (0 = byte, 1 = short, 2 = long) */
1744 12, /* bitsize */
1745 FALSE, /* pc_relative */
1746 0, /* bitpos */
1747 complain_overflow_dont, /* complain_on_overflow */
1748 bfd_elf_generic_reloc, /* special_function */
a6bb11b2 1749 AARCH64_R_STR (TLSDESC_OFF_G0_NC), /* name */
a06ea964
NC		 1750 FALSE, /* partial_inplace */
1751 0xffff, /* src_mask */
1752 0xffff, /* dst_mask */
1753 FALSE), /* pcrel_offset */
1754
a6bb11b2 1755 HOWTO64 (AARCH64_R (TLSDESC_LDR), /* type */
a06ea964
NC		 1756 0, /* rightshift */
1757 2, /* size (0 = byte, 1 = short, 2 = long) */
1758 12, /* bitsize */
1759 FALSE, /* pc_relative */
1760 0, /* bitpos */
1761 complain_overflow_dont, /* complain_on_overflow */
1762 bfd_elf_generic_reloc, /* special_function */
a6bb11b2 1763 AARCH64_R_STR (TLSDESC_LDR), /* name */
a06ea964
NC		 1764 FALSE, /* partial_inplace */
1765 0x0, /* src_mask */
1766 0x0, /* dst_mask */
1767 FALSE), /* pcrel_offset */
1768
a6bb11b2 1769 HOWTO64 (AARCH64_R (TLSDESC_ADD), /* type */
a06ea964
NC		 1770 0, /* rightshift */
1771 2, /* size (0 = byte, 1 = short, 2 = long) */
1772 12, /* bitsize */
1773 FALSE, /* pc_relative */
1774 0, /* bitpos */
1775 complain_overflow_dont, /* complain_on_overflow */
1776 bfd_elf_generic_reloc, /* special_function */
a6bb11b2 1777 AARCH64_R_STR (TLSDESC_ADD), /* name */
a06ea964
NC		 1778 FALSE, /* partial_inplace */
1779 0x0, /* src_mask */
1780 0x0, /* dst_mask */
1781 FALSE), /* pcrel_offset */
1782
a6bb11b2 1783 HOWTO (AARCH64_R (TLSDESC_CALL), /* type */
a06ea964
NC		 1784 0, /* rightshift */
1785 2, /* size (0 = byte, 1 = short, 2 = long) */
7366006f 1786 0, /* bitsize */
a06ea964
NC		 1787 FALSE, /* pc_relative */
1788 0, /* bitpos */
1789 complain_overflow_dont, /* complain_on_overflow */
1790 bfd_elf_generic_reloc, /* special_function */
a6bb11b2 1791 AARCH64_R_STR (TLSDESC_CALL), /* name */
a06ea964
NC		 1792 FALSE, /* partial_inplace */
1793 0x0, /* src_mask */
1794 0x0, /* dst_mask */
1795 FALSE), /* pcrel_offset */
a6bb11b2
YZ		 1796
1797 HOWTO (AARCH64_R (COPY), /* type */
1798 0, /* rightshift */
1799 2, /* size (0 = byte, 1 = short, 2 = long) */
1800 64, /* bitsize */
1801 FALSE, /* pc_relative */
1802 0, /* bitpos */
1803 complain_overflow_bitfield, /* complain_on_overflow */
1804 bfd_elf_generic_reloc, /* special_function */
1805 AARCH64_R_STR (COPY), /* name */
1806 TRUE, /* partial_inplace */
1807 0xffffffff, /* src_mask */
1808 0xffffffff, /* dst_mask */
1809 FALSE), /* pcrel_offset */
1810
1811 HOWTO (AARCH64_R (GLOB_DAT), /* type */
1812 0, /* rightshift */
1813 2, /* size (0 = byte, 1 = short, 2 = long) */
1814 64, /* bitsize */
1815 FALSE, /* pc_relative */
1816 0, /* bitpos */
1817 complain_overflow_bitfield, /* complain_on_overflow */
1818 bfd_elf_generic_reloc, /* special_function */
1819 AARCH64_R_STR (GLOB_DAT), /* name */
1820 TRUE, /* partial_inplace */
1821 0xffffffff, /* src_mask */
1822 0xffffffff, /* dst_mask */
1823 FALSE), /* pcrel_offset */
1824
1825 HOWTO (AARCH64_R (JUMP_SLOT), /* type */
1826 0, /* rightshift */
1827 2, /* size (0 = byte, 1 = short, 2 = long) */
1828 64, /* bitsize */
1829 FALSE, /* pc_relative */
1830 0, /* bitpos */
1831 complain_overflow_bitfield, /* complain_on_overflow */
1832 bfd_elf_generic_reloc, /* special_function */
1833 AARCH64_R_STR (JUMP_SLOT), /* name */
1834 TRUE, /* partial_inplace */
1835 0xffffffff, /* src_mask */
1836 0xffffffff, /* dst_mask */
1837 FALSE), /* pcrel_offset */
1838
1839 HOWTO (AARCH64_R (RELATIVE), /* type */
1840 0, /* rightshift */
1841 2, /* size (0 = byte, 1 = short, 2 = long) */
1842 64, /* bitsize */
1843 FALSE, /* pc_relative */
1844 0, /* bitpos */
1845 complain_overflow_bitfield, /* complain_on_overflow */
1846 bfd_elf_generic_reloc, /* special_function */
1847 AARCH64_R_STR (RELATIVE), /* name */
1848 TRUE, /* partial_inplace */
1849 ALL_ONES, /* src_mask */
1850 ALL_ONES, /* dst_mask */
1851 FALSE), /* pcrel_offset */
1852
1853 HOWTO (AARCH64_R (TLS_DTPMOD), /* type */
1854 0, /* rightshift */
1855 2, /* size (0 = byte, 1 = short, 2 = long) */
1856 64, /* bitsize */
1857 FALSE, /* pc_relative */
1858 0, /* bitpos */
1859 complain_overflow_dont, /* complain_on_overflow */
1860 bfd_elf_generic_reloc, /* special_function */
da0781dc
YZ		 1861#if ARCH_SIZE == 64
1862 AARCH64_R_STR (TLS_DTPMOD64), /* name */
1863#else
a6bb11b2 1864 AARCH64_R_STR (TLS_DTPMOD), /* name */
da0781dc 1865#endif
a6bb11b2
YZ		 1866 FALSE, /* partial_inplace */
1867 0, /* src_mask */
1868 ALL_ONES, /* dst_mask */
1869 FALSE), /* pc_reloffset */
1870
1871 HOWTO (AARCH64_R (TLS_DTPREL), /* type */
1872 0, /* rightshift */
1873 2, /* size (0 = byte, 1 = short, 2 = long) */
1874 64, /* bitsize */
1875 FALSE, /* pc_relative */
1876 0, /* bitpos */
1877 complain_overflow_dont, /* complain_on_overflow */
1878 bfd_elf_generic_reloc, /* special_function */
da0781dc
YZ		 1879#if ARCH_SIZE == 64
1880 AARCH64_R_STR (TLS_DTPREL64), /* name */
1881#else
a6bb11b2 1882 AARCH64_R_STR (TLS_DTPREL), /* name */
da0781dc 1883#endif
a6bb11b2
YZ		 1884 FALSE, /* partial_inplace */
1885 0, /* src_mask */
1886 ALL_ONES, /* dst_mask */
1887 FALSE), /* pcrel_offset */
1888
1889 HOWTO (AARCH64_R (TLS_TPREL), /* type */
1890 0, /* rightshift */
1891 2, /* size (0 = byte, 1 = short, 2 = long) */
1892 64, /* bitsize */
1893 FALSE, /* pc_relative */
1894 0, /* bitpos */
1895 complain_overflow_dont, /* complain_on_overflow */
1896 bfd_elf_generic_reloc, /* special_function */
da0781dc
YZ		 1897#if ARCH_SIZE == 64
1898 AARCH64_R_STR (TLS_TPREL64), /* name */
1899#else
a6bb11b2 1900 AARCH64_R_STR (TLS_TPREL), /* name */
da0781dc 1901#endif
a6bb11b2
YZ		 1902 FALSE, /* partial_inplace */
1903 0, /* src_mask */
1904 ALL_ONES, /* dst_mask */
1905 FALSE), /* pcrel_offset */
1906
1907 HOWTO (AARCH64_R (TLSDESC), /* type */
1908 0, /* rightshift */
1909 2, /* size (0 = byte, 1 = short, 2 = long) */
1910 64, /* bitsize */
1911 FALSE, /* pc_relative */
1912 0, /* bitpos */
1913 complain_overflow_dont, /* complain_on_overflow */
1914 bfd_elf_generic_reloc, /* special_function */
1915 AARCH64_R_STR (TLSDESC), /* name */
1916 FALSE, /* partial_inplace */
1917 0, /* src_mask */
1918 ALL_ONES, /* dst_mask */
1919 FALSE), /* pcrel_offset */
1920
1921 HOWTO (AARCH64_R (IRELATIVE), /* type */
1922 0, /* rightshift */
1923 2, /* size (0 = byte, 1 = short, 2 = long) */
1924 64, /* bitsize */
1925 FALSE, /* pc_relative */
1926 0, /* bitpos */
1927 complain_overflow_bitfield, /* complain_on_overflow */
1928 bfd_elf_generic_reloc, /* special_function */
1929 AARCH64_R_STR (IRELATIVE), /* name */
1930 FALSE, /* partial_inplace */
1931 0, /* src_mask */
1932 ALL_ONES, /* dst_mask */
1933 FALSE), /* pcrel_offset */
1934
1935 EMPTY_HOWTO (0),
a06ea964
NC		 1936};
1937
a6bb11b2
YZ		 1938static reloc_howto_type elfNN_aarch64_howto_none =
1939 HOWTO (R_AARCH64_NONE, /* type */
1940 0, /* rightshift */
6346d5ca 1941 3, /* size (0 = byte, 1 = short, 2 = long) */
a6bb11b2
YZ		 1942 0, /* bitsize */
1943 FALSE, /* pc_relative */
1944 0, /* bitpos */
1945 complain_overflow_dont,/* complain_on_overflow */
1946 bfd_elf_generic_reloc, /* special_function */
1947 "R_AARCH64_NONE", /* name */
1948 FALSE, /* partial_inplace */
1949 0, /* src_mask */
1950 0, /* dst_mask */
1951 FALSE); /* pcrel_offset */
1952
1953/* Given HOWTO, return the bfd internal relocation enumerator. */
1954
1955static bfd_reloc_code_real_type
1956elfNN_aarch64_bfd_reloc_from_howto (reloc_howto_type *howto)
1957{
1958 const int size
1959 = (int) ARRAY_SIZE (elfNN_aarch64_howto_table);
1960 const ptrdiff_t offset
1961 = howto - elfNN_aarch64_howto_table;
1962
1963 if (offset > 0 && offset < size - 1)
1964 return BFD_RELOC_AARCH64_RELOC_START + offset;
1965
1966 if (howto == &elfNN_aarch64_howto_none)
1967 return BFD_RELOC_AARCH64_NONE;
1968
1969 return BFD_RELOC_AARCH64_RELOC_START;
1970}
1971
1972/* Given R_TYPE, return the bfd internal relocation enumerator. */
1973
1974static bfd_reloc_code_real_type
0aa13fee 1975elfNN_aarch64_bfd_reloc_from_type (bfd *abfd, unsigned int r_type)
a6bb11b2
YZ		 1976{
1977 static bfd_boolean initialized_p = FALSE;
1978 /* Indexed by R_TYPE, values are offsets in the howto_table. */
1979 static unsigned int offsets[R_AARCH64_end];
1980
535b785f 1981 if (!initialized_p)
a6bb11b2
YZ		 1982 {
1983 unsigned int i;
1984
1985 for (i = 1; i < ARRAY_SIZE (elfNN_aarch64_howto_table) - 1; ++i)
1986 if (elfNN_aarch64_howto_table[i].type != 0)
1987 offsets[elfNN_aarch64_howto_table[i].type] = i;
1988
1989 initialized_p = TRUE;
1990 }
1991
1992 if (r_type == R_AARCH64_NONE || r_type == R_AARCH64_NULL)
1993 return BFD_RELOC_AARCH64_NONE;
1994
5860e3f8
NC		 1995 /* PR 17512: file: b371e70a. */
1996 if (r_type >= R_AARCH64_end)
1997 {
0aa13fee
AM		 1998 _bfd_error_handler (_("%pB: unsupported relocation type %#x"),
1999 abfd, r_type);
5860e3f8
NC		 2000 bfd_set_error (bfd_error_bad_value);
2001 return BFD_RELOC_AARCH64_NONE;
2002 }
2003
a6bb11b2
YZ		 2004 return BFD_RELOC_AARCH64_RELOC_START + offsets[r_type];
2005}
2006
2007struct elf_aarch64_reloc_map
2008{
2009 bfd_reloc_code_real_type from;
2010 bfd_reloc_code_real_type to;
2011};
2012
2013/* Map bfd generic reloc to AArch64-specific reloc. */
2014static const struct elf_aarch64_reloc_map elf_aarch64_reloc_map[] =
2015{
2016 {BFD_RELOC_NONE, BFD_RELOC_AARCH64_NONE},
2017
2018 /* Basic data relocations. */
2019 {BFD_RELOC_CTOR, BFD_RELOC_AARCH64_NN},
2020 {BFD_RELOC_64, BFD_RELOC_AARCH64_64},
2021 {BFD_RELOC_32, BFD_RELOC_AARCH64_32},
2022 {BFD_RELOC_16, BFD_RELOC_AARCH64_16},
2023 {BFD_RELOC_64_PCREL, BFD_RELOC_AARCH64_64_PCREL},
2024 {BFD_RELOC_32_PCREL, BFD_RELOC_AARCH64_32_PCREL},
2025 {BFD_RELOC_16_PCREL, BFD_RELOC_AARCH64_16_PCREL},
2026};
2027
2028/* Given the bfd internal relocation enumerator in CODE, return the
2029 corresponding howto entry. */
2030
2031static reloc_howto_type *
2032elfNN_aarch64_howto_from_bfd_reloc (bfd_reloc_code_real_type code)
2033{
2034 unsigned int i;
2035
2036 /* Convert bfd generic reloc to AArch64-specific reloc. */
2037 if (code < BFD_RELOC_AARCH64_RELOC_START
2038 || code > BFD_RELOC_AARCH64_RELOC_END)
2039 for (i = 0; i < ARRAY_SIZE (elf_aarch64_reloc_map); i++)
2040 if (elf_aarch64_reloc_map[i].from == code)
2041 {
2042 code = elf_aarch64_reloc_map[i].to;
2043 break;
2044 }
2045
2046 if (code > BFD_RELOC_AARCH64_RELOC_START
2047 && code < BFD_RELOC_AARCH64_RELOC_END)
2048 if (elfNN_aarch64_howto_table[code - BFD_RELOC_AARCH64_RELOC_START].type)
2049 return &elfNN_aarch64_howto_table[code - BFD_RELOC_AARCH64_RELOC_START];
2050
54757ed1
AP		 2051 if (code == BFD_RELOC_AARCH64_NONE)
2052 return &elfNN_aarch64_howto_none;
2053
a6bb11b2
YZ		 2054 return NULL;
2055}
2056
a06ea964 2057static reloc_howto_type *
0aa13fee 2058elfNN_aarch64_howto_from_type (bfd *abfd, unsigned int r_type)
a06ea964 2059{
a6bb11b2
YZ		 2060 bfd_reloc_code_real_type val;
2061 reloc_howto_type *howto;
2062
cec5225b
YZ		 2063#if ARCH_SIZE == 32
2064 if (r_type > 256)
2065 {
2066 bfd_set_error (bfd_error_bad_value);
2067 return NULL;
2068 }
2069#endif
2070
a6bb11b2
YZ		 2071 if (r_type == R_AARCH64_NONE)
2072 return &elfNN_aarch64_howto_none;
a06ea964 2073
0aa13fee 2074 val = elfNN_aarch64_bfd_reloc_from_type (abfd, r_type);
a6bb11b2 2075 howto = elfNN_aarch64_howto_from_bfd_reloc (val);
a06ea964 2076
a6bb11b2
YZ		 2077 if (howto != NULL)
2078 return howto;
a06ea964 2079
a06ea964
NC		 2080 bfd_set_error (bfd_error_bad_value);
2081 return NULL;
2082}
2083
f3185997 2084static bfd_boolean
0aa13fee 2085elfNN_aarch64_info_to_howto (bfd *abfd, arelent *bfd_reloc,
a06ea964
NC		 2086 Elf_Internal_Rela *elf_reloc)
2087{
2088 unsigned int r_type;
2089
cec5225b 2090 r_type = ELFNN_R_TYPE (elf_reloc->r_info);
0aa13fee 2091 bfd_reloc->howto = elfNN_aarch64_howto_from_type (abfd, r_type);
f3185997
NC		 2092
2093 if (bfd_reloc->howto == NULL)
2094 {
2095 /* xgettext:c-format */
2096 _bfd_error_handler (_("%pB: unsupported relocation type %#x"), abfd, r_type);
2097 return FALSE;
2098 }
2099 return TRUE;
a06ea964
NC		 2100}
2101
a06ea964 2102static reloc_howto_type *
cec5225b 2103elfNN_aarch64_reloc_type_lookup (bfd *abfd ATTRIBUTE_UNUSED,
a06ea964
NC		 2104 bfd_reloc_code_real_type code)
2105{
a6bb11b2 2106 reloc_howto_type *howto = elfNN_aarch64_howto_from_bfd_reloc (code);
a06ea964 2107
a6bb11b2
YZ		 2108 if (howto != NULL)
2109 return howto;
a06ea964
NC		 2110
2111 bfd_set_error (bfd_error_bad_value);
2112 return NULL;
2113}
2114
2115static reloc_howto_type *
cec5225b 2116elfNN_aarch64_reloc_name_lookup (bfd *abfd ATTRIBUTE_UNUSED,
a06ea964
NC		 2117 const char *r_name)
2118{
2119 unsigned int i;
2120
a6bb11b2
YZ		 2121 for (i = 1; i < ARRAY_SIZE (elfNN_aarch64_howto_table) - 1; ++i)
2122 if (elfNN_aarch64_howto_table[i].name != NULL
2123 && strcasecmp (elfNN_aarch64_howto_table[i].name, r_name) == 0)
2124 return &elfNN_aarch64_howto_table[i];
a06ea964
NC		 2125
2126 return NULL;
2127}
2128
07d6d2b8
AM		 2129#define TARGET_LITTLE_SYM aarch64_elfNN_le_vec
2130#define TARGET_LITTLE_NAME "elfNN-littleaarch64"
2131#define TARGET_BIG_SYM aarch64_elfNN_be_vec
2132#define TARGET_BIG_NAME "elfNN-bigaarch64"
a06ea964 2133
a06ea964
NC		 2134/* The linker script knows the section names for placement.
2135 The entry_names are used to do simple name mangling on the stubs.
2136 Given a function name, and its type, the stub can be found. The
2137 name can be changed. The only requirement is the %s be present. */
2138#define STUB_ENTRY_NAME "__%s_veneer"
2139
2140/* The name of the dynamic interpreter. This is put in the .interp
2141 section. */
2142#define ELF_DYNAMIC_INTERPRETER "/lib/ld.so.1"
2143
2144#define AARCH64_MAX_FWD_BRANCH_OFFSET \
2145 (((1 << 25) - 1) << 2)
2146#define AARCH64_MAX_BWD_BRANCH_OFFSET \
2147 (-((1 << 25) << 2))
2148
2149#define AARCH64_MAX_ADRP_IMM ((1 << 20) - 1)
2150#define AARCH64_MIN_ADRP_IMM (-(1 << 20))
2151
2152static int
2153aarch64_valid_for_adrp_p (bfd_vma value, bfd_vma place)
2154{
2155 bfd_signed_vma offset = (bfd_signed_vma) (PG (value) - PG (place)) >> 12;
2156 return offset <= AARCH64_MAX_ADRP_IMM && offset >= AARCH64_MIN_ADRP_IMM;
2157}
2158
2159static int
2160aarch64_valid_branch_p (bfd_vma value, bfd_vma place)
2161{
2162 bfd_signed_vma offset = (bfd_signed_vma) (value - place);
2163 return (offset <= AARCH64_MAX_FWD_BRANCH_OFFSET
2164 && offset >= AARCH64_MAX_BWD_BRANCH_OFFSET);
2165}
2166
2167static const uint32_t aarch64_adrp_branch_stub [] =
2168{
2169 0x90000010, /* adrp ip0, X */
2170 /* R_AARCH64_ADR_HI21_PCREL(X) */
2171 0x91000210, /* add ip0, ip0, :lo12:X */
2172 /* R_AARCH64_ADD_ABS_LO12_NC(X) */
2173 0xd61f0200, /* br ip0 */
2174};
2175
2176static const uint32_t aarch64_long_branch_stub[] =
2177{
cec5225b 2178#if ARCH_SIZE == 64
a06ea964 2179 0x58000090, /* ldr ip0, 1f */
cec5225b
YZ		 2180#else
2181 0x18000090, /* ldr wip0, 1f */
2182#endif
a06ea964
NC		 2183 0x10000011, /* adr ip1, #0 */
2184 0x8b110210, /* add ip0, ip0, ip1 */
2185 0xd61f0200, /* br ip0 */
cec5225b
YZ		 2186 0x00000000, /* 1: .xword or .word
2187 R_AARCH64_PRELNN(X) + 12
a06ea964
NC		 2188 */
2189 0x00000000,
2190};
2191
68fcca92
JW		 2192static const uint32_t aarch64_erratum_835769_stub[] =
2193{
2194 0x00000000, /* Placeholder for multiply accumulate. */
2195 0x14000000, /* b <label> */
2196};
2197
4106101c
MS		 2198static const uint32_t aarch64_erratum_843419_stub[] =
2199{
2200 0x00000000, /* Placeholder for LDR instruction. */
2201 0x14000000, /* b <label> */
2202};
2203
a06ea964
NC		 2204/* Section name for stubs is the associated section name plus this
2205 string. */
2206#define STUB_SUFFIX ".stub"
2207
cec5225b 2208enum elf_aarch64_stub_type
a06ea964
NC		 2209{
2210 aarch64_stub_none,
2211 aarch64_stub_adrp_branch,
2212 aarch64_stub_long_branch,
68fcca92 2213 aarch64_stub_erratum_835769_veneer,
4106101c 2214 aarch64_stub_erratum_843419_veneer,
a06ea964
NC		 2215};
2216
cec5225b 2217struct elf_aarch64_stub_hash_entry
a06ea964
NC		 2218{
2219 /* Base hash table entry structure. */
2220 struct bfd_hash_entry root;
2221
2222 /* The stub section. */
2223 asection *stub_sec;
2224
2225 /* Offset within stub_sec of the beginning of this stub. */
2226 bfd_vma stub_offset;
2227
2228 /* Given the symbol's value and its section we can determine its final
2229 value when building the stubs (so the stub knows where to jump). */
2230 bfd_vma target_value;
2231 asection *target_section;
2232
cec5225b 2233 enum elf_aarch64_stub_type stub_type;
a06ea964
NC		 2234
2235 /* The symbol table entry, if any, that this was derived from. */
cec5225b 2236 struct elf_aarch64_link_hash_entry *h;
a06ea964
NC		 2237
2238 /* Destination symbol type */
2239 unsigned char st_type;
2240
2241 /* Where this stub is being called from, or, in the case of combined
2242 stub sections, the first input section in the group. */
2243 asection *id_sec;
2244
2245 /* The name for the local symbol at the start of this stub. The
2246 stub name in the hash table has to be unique; this does not, so
2247 it can be friendlier. */
2248 char *output_name;
68fcca92
JW		 2249
2250 /* The instruction which caused this stub to be generated (only valid for
2251 erratum 835769 workaround stubs at present). */
2252 uint32_t veneered_insn;
4106101c
MS		 2253
2254 /* In an erratum 843419 workaround stub, the ADRP instruction offset. */
2255 bfd_vma adrp_offset;
a06ea964
NC		 2256};
2257
2258/* Used to build a map of a section. This is required for mixed-endian
2259 code/data. */
2260
cec5225b 2261typedef struct elf_elf_section_map
a06ea964
NC		 2262{
2263 bfd_vma vma;
2264 char type;
2265}
cec5225b 2266elf_aarch64_section_map;
a06ea964
NC		 2267
2268
2269typedef struct _aarch64_elf_section_data
2270{
2271 struct bfd_elf_section_data elf;
2272 unsigned int mapcount;
2273 unsigned int mapsize;
cec5225b 2274 elf_aarch64_section_map *map;
a06ea964
NC		 2275}
2276_aarch64_elf_section_data;
2277
cec5225b 2278#define elf_aarch64_section_data(sec) \
a06ea964
NC		 2279 ((_aarch64_elf_section_data *) elf_section_data (sec))
2280
4e8516b2
AP		 2281/* The size of the thread control block which is defined to be two pointers. */
2282#define TCB_SIZE (ARCH_SIZE/8)*2
a06ea964
NC		 2283
2284struct elf_aarch64_local_symbol
2285{
2286 unsigned int got_type;
2287 bfd_signed_vma got_refcount;
2288 bfd_vma got_offset;
2289
2290 /* Offset of the GOTPLT entry reserved for the TLS descriptor. The
2291 offset is from the end of the jump table and reserved entries
2292 within the PLTGOT.
2293
2294 The magic value (bfd_vma) -1 indicates that an offset has not be
2295 allocated. */
2296 bfd_vma tlsdesc_got_jump_table_offset;
2297};
2298
2299struct elf_aarch64_obj_tdata
2300{
2301 struct elf_obj_tdata root;
2302
2303 /* local symbol descriptors */
2304 struct elf_aarch64_local_symbol *locals;
2305
2306 /* Zero to warn when linking objects with incompatible enum sizes. */
2307 int no_enum_size_warning;
2308
2309 /* Zero to warn when linking objects with incompatible wchar_t sizes. */
2310 int no_wchar_size_warning;
2311};
2312
2313#define elf_aarch64_tdata(bfd) \
2314 ((struct elf_aarch64_obj_tdata *) (bfd)->tdata.any)
2315
cec5225b 2316#define elf_aarch64_locals(bfd) (elf_aarch64_tdata (bfd)->locals)
a06ea964
NC		 2317
2318#define is_aarch64_elf(bfd) \
2319 (bfd_get_flavour (bfd) == bfd_target_elf_flavour \
2320 && elf_tdata (bfd) != NULL \
2321 && elf_object_id (bfd) == AARCH64_ELF_DATA)
2322
2323static bfd_boolean
cec5225b 2324elfNN_aarch64_mkobject (bfd *abfd)
a06ea964
NC		 2325{
2326 return bfd_elf_allocate_object (abfd, sizeof (struct elf_aarch64_obj_tdata),
2327 AARCH64_ELF_DATA);
2328}
2329
cec5225b
YZ		 2330#define elf_aarch64_hash_entry(ent) \
2331 ((struct elf_aarch64_link_hash_entry *)(ent))
a06ea964
NC		 2332
2333#define GOT_UNKNOWN 0
2334#define GOT_NORMAL 1
2335#define GOT_TLS_GD 2
2336#define GOT_TLS_IE 4
2337#define GOT_TLSDESC_GD 8
2338
2339#define GOT_TLS_GD_ANY_P(type) ((type & GOT_TLS_GD) || (type & GOT_TLSDESC_GD))
2340
2341/* AArch64 ELF linker hash entry. */
cec5225b 2342struct elf_aarch64_link_hash_entry
a06ea964
NC		 2343{
2344 struct elf_link_hash_entry root;
2345
2346 /* Track dynamic relocs copied for this symbol. */
2347 struct elf_dyn_relocs *dyn_relocs;
2348
a06ea964
NC		 2349 /* Since PLT entries have variable size, we need to record the
2350 index into .got.plt instead of recomputing it from the PLT
2351 offset. */
2352 bfd_signed_vma plt_got_offset;
2353
2354 /* Bit mask representing the type of GOT entry(s) if any required by
2355 this symbol. */
2356 unsigned int got_type;
2357
2358 /* A pointer to the most recently used stub hash entry against this
2359 symbol. */
cec5225b 2360 struct elf_aarch64_stub_hash_entry *stub_cache;
a06ea964
NC		 2361
2362 /* Offset of the GOTPLT entry reserved for the TLS descriptor. The offset
2363 is from the end of the jump table and reserved entries within the PLTGOT.
2364
2365 The magic value (bfd_vma) -1 indicates that an offset has not
2366 be allocated. */
2367 bfd_vma tlsdesc_got_jump_table_offset;
2368};
2369
2370static unsigned int
cec5225b 2371elfNN_aarch64_symbol_got_type (struct elf_link_hash_entry *h,
a06ea964
NC		 2372 bfd *abfd,
2373 unsigned long r_symndx)
2374{
2375 if (h)
cec5225b 2376 return elf_aarch64_hash_entry (h)->got_type;
a06ea964 2377
cec5225b 2378 if (! elf_aarch64_locals (abfd))
a06ea964
NC		 2379 return GOT_UNKNOWN;
2380
cec5225b 2381 return elf_aarch64_locals (abfd)[r_symndx].got_type;
a06ea964
NC		 2382}
2383
a06ea964 2384/* Get the AArch64 elf linker hash table from a link_info structure. */
cec5225b
YZ		 2385#define elf_aarch64_hash_table(info) \
2386 ((struct elf_aarch64_link_hash_table *) ((info)->hash))
a06ea964
NC		 2387
2388#define aarch64_stub_hash_lookup(table, string, create, copy) \
cec5225b 2389 ((struct elf_aarch64_stub_hash_entry *) \
a06ea964
NC		 2390 bfd_hash_lookup ((table), (string), (create), (copy)))
2391
2392/* AArch64 ELF linker hash table. */
cec5225b 2393struct elf_aarch64_link_hash_table
a06ea964
NC		 2394{
2395 /* The main hash table. */
2396 struct elf_link_hash_table root;
2397
2398 /* Nonzero to force PIC branch veneers. */
2399 int pic_veneer;
2400
68fcca92
JW		 2401 /* Fix erratum 835769. */
2402 int fix_erratum_835769;
2403
4106101c
MS		 2404 /* Fix erratum 843419. */
2405 int fix_erratum_843419;
2406
2407 /* Enable ADRP->ADR rewrite for erratum 843419 workaround. */
2408 int fix_erratum_843419_adr;
2409
1f56df9d
JW		 2410 /* Don't apply link-time values for dynamic relocations. */
2411 int no_apply_dynamic_relocs;
2412
a06ea964
NC		 2413 /* The number of bytes in the initial entry in the PLT. */
2414 bfd_size_type plt_header_size;
2415
2416 /* The number of bytes in the subsequent PLT etries. */
2417 bfd_size_type plt_entry_size;
2418
a06ea964
NC		 2419 /* Small local sym cache. */
2420 struct sym_cache sym_cache;
2421
2422 /* For convenience in allocate_dynrelocs. */
2423 bfd *obfd;
2424
2425 /* The amount of space used by the reserved portion of the sgotplt
2426 section, plus whatever space is used by the jump slots. */
2427 bfd_vma sgotplt_jump_table_size;
2428
2429 /* The stub hash table. */
2430 struct bfd_hash_table stub_hash_table;
2431
2432 /* Linker stub bfd. */
2433 bfd *stub_bfd;
2434
2435 /* Linker call-backs. */
2436 asection *(*add_stub_section) (const char *, asection *);
2437 void (*layout_sections_again) (void);
2438
2439 /* Array to keep track of which stub sections have been created, and
2440 information on stub grouping. */
2441 struct map_stub
2442 {
2443 /* This is the section to which stubs in the group will be
2444 attached. */
2445 asection *link_sec;
2446 /* The stub section. */
2447 asection *stub_sec;
2448 } *stub_group;
2449
cec5225b 2450 /* Assorted information used by elfNN_aarch64_size_stubs. */
a06ea964 2451 unsigned int bfd_count;
7292b3ac 2452 unsigned int top_index;
a06ea964
NC		 2453 asection **input_list;
2454
2455 /* The offset into splt of the PLT entry for the TLS descriptor
2456 resolver. Special values are 0, if not necessary (or not found
2457 to be necessary yet), and -1 if needed but not determined
2458 yet. */
2459 bfd_vma tlsdesc_plt;
2460
2461 /* The GOT offset for the lazy trampoline. Communicated to the
2462 loader via DT_TLSDESC_GOT. The magic value (bfd_vma) -1
2463 indicates an offset is not allocated. */
2464 bfd_vma dt_tlsdesc_got;
1419bbe5
WN		 2465
2466 /* Used by local STT_GNU_IFUNC symbols. */
2467 htab_t loc_hash_table;
2468 void * loc_hash_memory;
a06ea964
NC		 2469};
2470
a06ea964
NC		 2471/* Create an entry in an AArch64 ELF linker hash table. */
2472
2473static struct bfd_hash_entry *
cec5225b 2474elfNN_aarch64_link_hash_newfunc (struct bfd_hash_entry *entry,
a06ea964
NC		 2475 struct bfd_hash_table *table,
2476 const char *string)
2477{
cec5225b
YZ		 2478 struct elf_aarch64_link_hash_entry *ret =
2479 (struct elf_aarch64_link_hash_entry *) entry;
a06ea964
NC		 2480
2481 /* Allocate the structure if it has not already been allocated by a
2482 subclass. */
2483 if (ret == NULL)
2484 ret = bfd_hash_allocate (table,
cec5225b 2485 sizeof (struct elf_aarch64_link_hash_entry));
a06ea964
NC		 2486 if (ret == NULL)
2487 return (struct bfd_hash_entry *) ret;
2488
2489 /* Call the allocation method of the superclass. */
cec5225b 2490 ret = ((struct elf_aarch64_link_hash_entry *)
a06ea964
NC		 2491 _bfd_elf_link_hash_newfunc ((struct bfd_hash_entry *) ret,
2492 table, string));
2493 if (ret != NULL)
2494 {
2495 ret->dyn_relocs = NULL;
a06ea964
NC		 2496 ret->got_type = GOT_UNKNOWN;
2497 ret->plt_got_offset = (bfd_vma) - 1;
2498 ret->stub_cache = NULL;
2499 ret->tlsdesc_got_jump_table_offset = (bfd_vma) - 1;
2500 }
2501
2502 return (struct bfd_hash_entry *) ret;
2503}
2504
2505/* Initialize an entry in the stub hash table. */
2506
2507static struct bfd_hash_entry *
2508stub_hash_newfunc (struct bfd_hash_entry *entry,
2509 struct bfd_hash_table *table, const char *string)
2510{
2511 /* Allocate the structure if it has not already been allocated by a
2512 subclass. */
2513 if (entry == NULL)
2514 {
2515 entry = bfd_hash_allocate (table,
2516 sizeof (struct
cec5225b 2517 elf_aarch64_stub_hash_entry));
a06ea964
NC		 2518 if (entry == NULL)
2519 return entry;
2520 }
2521
2522 /* Call the allocation method of the superclass. */
2523 entry = bfd_hash_newfunc (entry, table, string);
2524 if (entry != NULL)
2525 {
cec5225b 2526 struct elf_aarch64_stub_hash_entry *eh;
a06ea964
NC		 2527
2528 /* Initialize the local fields. */
cec5225b 2529 eh = (struct elf_aarch64_stub_hash_entry *) entry;
4106101c 2530 eh->adrp_offset = 0;
a06ea964
NC		 2531 eh->stub_sec = NULL;
2532 eh->stub_offset = 0;
2533 eh->target_value = 0;
2534 eh->target_section = NULL;
2535 eh->stub_type = aarch64_stub_none;
2536 eh->h = NULL;
2537 eh->id_sec = NULL;
2538 }
2539
2540 return entry;
2541}
2542
1419bbe5
WN		 2543/* Compute a hash of a local hash entry. We use elf_link_hash_entry
2544 for local symbol so that we can handle local STT_GNU_IFUNC symbols
2545 as global symbol. We reuse indx and dynstr_index for local symbol
2546 hash since they aren't used by global symbols in this backend. */
2547
2548static hashval_t
2549elfNN_aarch64_local_htab_hash (const void *ptr)
2550{
2551 struct elf_link_hash_entry *h
2552 = (struct elf_link_hash_entry *) ptr;
2553 return ELF_LOCAL_SYMBOL_HASH (h->indx, h->dynstr_index);
2554}
2555
2556/* Compare local hash entries. */
2557
2558static int
2559elfNN_aarch64_local_htab_eq (const void *ptr1, const void *ptr2)
2560{
2561 struct elf_link_hash_entry *h1
2562 = (struct elf_link_hash_entry *) ptr1;
2563 struct elf_link_hash_entry *h2
2564 = (struct elf_link_hash_entry *) ptr2;
2565
2566 return h1->indx == h2->indx && h1->dynstr_index == h2->dynstr_index;
2567}
2568
2569/* Find and/or create a hash entry for local symbol. */
2570
2571static struct elf_link_hash_entry *
2572elfNN_aarch64_get_local_sym_hash (struct elf_aarch64_link_hash_table *htab,
2573 bfd *abfd, const Elf_Internal_Rela *rel,
2574 bfd_boolean create)
2575{
2576 struct elf_aarch64_link_hash_entry e, *ret;
2577 asection *sec = abfd->sections;
2578 hashval_t h = ELF_LOCAL_SYMBOL_HASH (sec->id,
2579 ELFNN_R_SYM (rel->r_info));
2580 void **slot;
2581
2582 e.root.indx = sec->id;
2583 e.root.dynstr_index = ELFNN_R_SYM (rel->r_info);
2584 slot = htab_find_slot_with_hash (htab->loc_hash_table, &e, h,
2585 create ? INSERT : NO_INSERT);
2586
2587 if (!slot)
2588 return NULL;
2589
2590 if (*slot)
2591 {
2592 ret = (struct elf_aarch64_link_hash_entry *) *slot;
2593 return &ret->root;
2594 }
2595
2596 ret = (struct elf_aarch64_link_hash_entry *)
2597 objalloc_alloc ((struct objalloc *) htab->loc_hash_memory,
2598 sizeof (struct elf_aarch64_link_hash_entry));
2599 if (ret)
2600 {
2601 memset (ret, 0, sizeof (*ret));
2602 ret->root.indx = sec->id;
2603 ret->root.dynstr_index = ELFNN_R_SYM (rel->r_info);
2604 ret->root.dynindx = -1;
2605 *slot = ret;
2606 }
2607 return &ret->root;
2608}
a06ea964
NC		 2609
2610/* Copy the extra info we tack onto an elf_link_hash_entry. */
2611
2612static void
cec5225b 2613elfNN_aarch64_copy_indirect_symbol (struct bfd_link_info *info,
a06ea964
NC		 2614 struct elf_link_hash_entry *dir,
2615 struct elf_link_hash_entry *ind)
2616{
cec5225b 2617 struct elf_aarch64_link_hash_entry *edir, *eind;
a06ea964 2618
cec5225b
YZ		 2619 edir = (struct elf_aarch64_link_hash_entry *) dir;
2620 eind = (struct elf_aarch64_link_hash_entry *) ind;
a06ea964
NC		 2621
2622 if (eind->dyn_relocs != NULL)
2623 {
2624 if (edir->dyn_relocs != NULL)
2625 {
2626 struct elf_dyn_relocs **pp;
2627 struct elf_dyn_relocs *p;
2628
2629 /* Add reloc counts against the indirect sym to the direct sym
2630 list. Merge any entries against the same section. */
2631 for (pp = &eind->dyn_relocs; (p = *pp) != NULL;)
2632 {
2633 struct elf_dyn_relocs *q;
2634
2635 for (q = edir->dyn_relocs; q != NULL; q = q->next)
2636 if (q->sec == p->sec)
2637 {
2638 q->pc_count += p->pc_count;
2639 q->count += p->count;
2640 *pp = p->next;
2641 break;
2642 }
2643 if (q == NULL)
2644 pp = &p->next;
2645 }
2646 *pp = edir->dyn_relocs;
2647 }
2648
2649 edir->dyn_relocs = eind->dyn_relocs;
2650 eind->dyn_relocs = NULL;
2651 }
2652
a06ea964
NC		 2653 if (ind->root.type == bfd_link_hash_indirect)
2654 {
2655 /* Copy over PLT info. */
2656 if (dir->got.refcount <= 0)
2657 {
2658 edir->got_type = eind->got_type;
2659 eind->got_type = GOT_UNKNOWN;
2660 }
2661 }
2662
2663 _bfd_elf_link_hash_copy_indirect (info, dir, ind);
2664}
2665
68faa637
AM		 2666/* Destroy an AArch64 elf linker hash table. */
2667
2668static void
d495ab0d 2669elfNN_aarch64_link_hash_table_free (bfd *obfd)
68faa637
AM		 2670{
2671 struct elf_aarch64_link_hash_table *ret
d495ab0d 2672 = (struct elf_aarch64_link_hash_table *) obfd->link.hash;
68faa637
AM		 2673
2674 if (ret->loc_hash_table)
2675 htab_delete (ret->loc_hash_table);
2676 if (ret->loc_hash_memory)
2677 objalloc_free ((struct objalloc *) ret->loc_hash_memory);
2678
2679 bfd_hash_table_free (&ret->stub_hash_table);
d495ab0d 2680 _bfd_elf_link_hash_table_free (obfd);
68faa637
AM		 2681}
2682
a06ea964
NC		 2683/* Create an AArch64 elf linker hash table. */
2684
2685static struct bfd_link_hash_table *
cec5225b 2686elfNN_aarch64_link_hash_table_create (bfd *abfd)
a06ea964 2687{
cec5225b
YZ		 2688 struct elf_aarch64_link_hash_table *ret;
2689 bfd_size_type amt = sizeof (struct elf_aarch64_link_hash_table);
a06ea964 2690
7bf52ea2 2691 ret = bfd_zmalloc (amt);
a06ea964
NC		 2692 if (ret == NULL)
2693 return NULL;
2694
2695 if (!_bfd_elf_link_hash_table_init
cec5225b
YZ		 2696 (&ret->root, abfd, elfNN_aarch64_link_hash_newfunc,
2697 sizeof (struct elf_aarch64_link_hash_entry), AARCH64_ELF_DATA))
a06ea964
NC		 2698 {
2699 free (ret);
2700 return NULL;
2701 }
2702
a06ea964
NC		 2703 ret->plt_header_size = PLT_ENTRY_SIZE;
2704 ret->plt_entry_size = PLT_SMALL_ENTRY_SIZE;
a06ea964 2705 ret->obfd = abfd;
a06ea964
NC		 2706 ret->dt_tlsdesc_got = (bfd_vma) - 1;
2707
2708 if (!bfd_hash_table_init (&ret->stub_hash_table, stub_hash_newfunc,
cec5225b 2709 sizeof (struct elf_aarch64_stub_hash_entry)))
a06ea964 2710 {
d495ab0d 2711 _bfd_elf_link_hash_table_free (abfd);
a06ea964
NC		 2712 return NULL;
2713 }
2714
1419bbe5
WN		 2715 ret->loc_hash_table = htab_try_create (1024,
2716 elfNN_aarch64_local_htab_hash,
2717 elfNN_aarch64_local_htab_eq,
2718 NULL);
2719 ret->loc_hash_memory = objalloc_create ();
2720 if (!ret->loc_hash_table || !ret->loc_hash_memory)
2721 {
d495ab0d 2722 elfNN_aarch64_link_hash_table_free (abfd);
1419bbe5
WN		 2723 return NULL;
2724 }
d495ab0d 2725 ret->root.root.hash_table_free = elfNN_aarch64_link_hash_table_free;
1419bbe5 2726
a06ea964
NC		 2727 return &ret->root.root;
2728}
2729
1d75a8e2
NC		 2730/* Perform relocation R_TYPE. Returns TRUE upon success, FALSE otherwise. */
2731
a06ea964
NC		 2732static bfd_boolean
2733aarch64_relocate (unsigned int r_type, bfd *input_bfd, asection *input_section,
2734 bfd_vma offset, bfd_vma value)
2735{
2736 reloc_howto_type *howto;
2737 bfd_vma place;
2738
0aa13fee 2739 howto = elfNN_aarch64_howto_from_type (input_bfd, r_type);
a06ea964
NC		 2740 place = (input_section->output_section->vma + input_section->output_offset
2741 + offset);
caed7120 2742
0aa13fee 2743 r_type = elfNN_aarch64_bfd_reloc_from_type (input_bfd, r_type);
caed7120
YZ		 2744 value = _bfd_aarch64_elf_resolve_relocation (r_type, place, value, 0, FALSE);
2745 return _bfd_aarch64_elf_put_addend (input_bfd,
2746 input_section->contents + offset, r_type,
1d75a8e2 2747 howto, value) == bfd_reloc_ok;
a06ea964
NC		 2748}
2749
cec5225b 2750static enum elf_aarch64_stub_type
a06ea964
NC		 2751aarch64_select_branch_stub (bfd_vma value, bfd_vma place)
2752{
2753 if (aarch64_valid_for_adrp_p (value, place))
2754 return aarch64_stub_adrp_branch;
2755 return aarch64_stub_long_branch;
2756}
2757
2758/* Determine the type of stub needed, if any, for a call. */
2759
cec5225b 2760static enum elf_aarch64_stub_type
9a228467 2761aarch64_type_of_stub (asection *input_sec,
a06ea964 2762 const Elf_Internal_Rela *rel,
f678ded7 2763 asection *sym_sec,
a06ea964 2764 unsigned char st_type,
a06ea964
NC		 2765 bfd_vma destination)
2766{
2767 bfd_vma location;
2768 bfd_signed_vma branch_offset;
2769 unsigned int r_type;
cec5225b 2770 enum elf_aarch64_stub_type stub_type = aarch64_stub_none;
a06ea964 2771
f678ded7 2772 if (st_type != STT_FUNC
2f340668 2773 && (sym_sec == input_sec))
a06ea964
NC		 2774 return stub_type;
2775
a06ea964
NC		 2776 /* Determine where the call point is. */
2777 location = (input_sec->output_offset
2778 + input_sec->output_section->vma + rel->r_offset);
2779
2780 branch_offset = (bfd_signed_vma) (destination - location);
2781
cec5225b 2782 r_type = ELFNN_R_TYPE (rel->r_info);
a06ea964
NC		 2783
2784 /* We don't want to redirect any old unconditional jump in this way,
2785 only one which is being used for a sibcall, where it is
2786 acceptable for the IP0 and IP1 registers to be clobbered. */
a6bb11b2 2787 if ((r_type == AARCH64_R (CALL26) || r_type == AARCH64_R (JUMP26))
a06ea964
NC		 2788 && (branch_offset > AARCH64_MAX_FWD_BRANCH_OFFSET
2789 || branch_offset < AARCH64_MAX_BWD_BRANCH_OFFSET))
2790 {
2791 stub_type = aarch64_stub_long_branch;
2792 }
2793
2794 return stub_type;
2795}
2796
2797/* Build a name for an entry in the stub hash table. */
2798
2799static char *
cec5225b 2800elfNN_aarch64_stub_name (const asection *input_section,
a06ea964 2801 const asection *sym_sec,
cec5225b 2802 const struct elf_aarch64_link_hash_entry *hash,
a06ea964
NC		 2803 const Elf_Internal_Rela *rel)
2804{
2805 char *stub_name;
2806 bfd_size_type len;
2807
2808 if (hash)
2809 {
2810 len = 8 + 1 + strlen (hash->root.root.root.string) + 1 + 16 + 1;
2811 stub_name = bfd_malloc (len);
2812 if (stub_name != NULL)
2813 snprintf (stub_name, len, "%08x_%s+%" BFD_VMA_FMT "x",
2814 (unsigned int) input_section->id,
2815 hash->root.root.root.string,
2816 rel->r_addend);
2817 }
2818 else
2819 {
2820 len = 8 + 1 + 8 + 1 + 8 + 1 + 16 + 1;
2821 stub_name = bfd_malloc (len);
2822 if (stub_name != NULL)
2823 snprintf (stub_name, len, "%08x_%x:%x+%" BFD_VMA_FMT "x",
2824 (unsigned int) input_section->id,
2825 (unsigned int) sym_sec->id,
cec5225b 2826 (unsigned int) ELFNN_R_SYM (rel->r_info),
a06ea964
NC		 2827 rel->r_addend);
2828 }
2829
2830 return stub_name;
2831}
2832
7f784814
JW		 2833/* Return TRUE if symbol H should be hashed in the `.gnu.hash' section. For
2834 executable PLT slots where the executable never takes the address of those
2835 functions, the function symbols are not added to the hash table. */
2836
2837static bfd_boolean
2838elf_aarch64_hash_symbol (struct elf_link_hash_entry *h)
2839{
2840 if (h->plt.offset != (bfd_vma) -1
2841 && !h->def_regular
2842 && !h->pointer_equality_needed)
2843 return FALSE;
2844
2845 return _bfd_elf_hash_symbol (h);
2846}
2847
2848
a06ea964
NC		 2849/* Look up an entry in the stub hash. Stub entries are cached because
2850 creating the stub name takes a bit of time. */
2851
cec5225b
YZ		 2852static struct elf_aarch64_stub_hash_entry *
2853elfNN_aarch64_get_stub_entry (const asection *input_section,
a06ea964
NC		 2854 const asection *sym_sec,
2855 struct elf_link_hash_entry *hash,
2856 const Elf_Internal_Rela *rel,
cec5225b 2857 struct elf_aarch64_link_hash_table *htab)
a06ea964 2858{
cec5225b
YZ		 2859 struct elf_aarch64_stub_hash_entry *stub_entry;
2860 struct elf_aarch64_link_hash_entry *h =
2861 (struct elf_aarch64_link_hash_entry *) hash;
a06ea964
NC		 2862 const asection *id_sec;
2863
2864 if ((input_section->flags & SEC_CODE) == 0)
2865 return NULL;
2866
2867 /* If this input section is part of a group of sections sharing one
2868 stub section, then use the id of the first section in the group.
2869 Stub names need to include a section id, as there may well be
2870 more than one stub used to reach say, printf, and we need to
2871 distinguish between them. */
2872 id_sec = htab->stub_group[input_section->id].link_sec;
2873
2874 if (h != NULL && h->stub_cache != NULL
2875 && h->stub_cache->h == h && h->stub_cache->id_sec == id_sec)
2876 {
2877 stub_entry = h->stub_cache;
2878 }
2879 else
2880 {
2881 char *stub_name;
2882
cec5225b 2883 stub_name = elfNN_aarch64_stub_name (id_sec, sym_sec, h, rel);
a06ea964
NC		 2884 if (stub_name == NULL)
2885 return NULL;
2886
2887 stub_entry = aarch64_stub_hash_lookup (&htab->stub_hash_table,
2888 stub_name, FALSE, FALSE);
2889 if (h != NULL)
2890 h->stub_cache = stub_entry;
2891
2892 free (stub_name);
2893 }
2894
2895 return stub_entry;
2896}
2897
a06ea964 2898
66585675
MS		 2899/* Create a stub section. */
2900
2901static asection *
2902_bfd_aarch64_create_stub_section (asection *section,
2903 struct elf_aarch64_link_hash_table *htab)
2904{
2905 size_t namelen;
2906 bfd_size_type len;
2907 char *s_name;
2908
2909 namelen = strlen (section->name);
2910 len = namelen + sizeof (STUB_SUFFIX);
2911 s_name = bfd_alloc (htab->stub_bfd, len);
2912 if (s_name == NULL)
2913 return NULL;
2914
2915 memcpy (s_name, section->name, namelen);
2916 memcpy (s_name + namelen, STUB_SUFFIX, sizeof (STUB_SUFFIX));
2917 return (*htab->add_stub_section) (s_name, section);
2918}
2919
2920
fc6d53be
MS		 2921/* Find or create a stub section for a link section.
2922
2923 Fix or create the stub section used to collect stubs attached to
2924 the specified link section. */
2925
2926static asection *
2927_bfd_aarch64_get_stub_for_link_section (asection *link_section,
2928 struct elf_aarch64_link_hash_table *htab)
2929{
2930 if (htab->stub_group[link_section->id].stub_sec == NULL)
2931 htab->stub_group[link_section->id].stub_sec
2932 = _bfd_aarch64_create_stub_section (link_section, htab);
2933 return htab->stub_group[link_section->id].stub_sec;
2934}
2935
2936
ef857521
MS		 2937/* Find or create a stub section in the stub group for an input
2938 section. */
2939
2940static asection *
2941_bfd_aarch64_create_or_find_stub_sec (asection *section,
2942 struct elf_aarch64_link_hash_table *htab)
a06ea964 2943{
fc6d53be
MS		 2944 asection *link_sec = htab->stub_group[section->id].link_sec;
2945 return _bfd_aarch64_get_stub_for_link_section (link_sec, htab);
ef857521
MS		 2946}
2947
2948
2949/* Add a new stub entry in the stub group associated with an input
2950 section to the stub hash. Not all fields of the new stub entry are
2951 initialised. */
2952
2953static struct elf_aarch64_stub_hash_entry *
2954_bfd_aarch64_add_stub_entry_in_group (const char *stub_name,
2955 asection *section,
2956 struct elf_aarch64_link_hash_table *htab)
2957{
2958 asection *link_sec;
2959 asection *stub_sec;
2960 struct elf_aarch64_stub_hash_entry *stub_entry;
2961
2962 link_sec = htab->stub_group[section->id].link_sec;
2963 stub_sec = _bfd_aarch64_create_or_find_stub_sec (section, htab);
2964
a06ea964
NC		 2965 /* Enter this entry into the linker stub hash table. */
2966 stub_entry = aarch64_stub_hash_lookup (&htab->stub_hash_table, stub_name,
2967 TRUE, FALSE);
2968 if (stub_entry == NULL)
2969 {
695344c0 2970 /* xgettext:c-format */
871b3ab2 2971 _bfd_error_handler (_("%pB: cannot create stub entry %s"),
4eca0228 2972 section->owner, stub_name);
a06ea964
NC		 2973 return NULL;
2974 }
2975
2976 stub_entry->stub_sec = stub_sec;
2977 stub_entry->stub_offset = 0;
2978 stub_entry->id_sec = link_sec;
2979
2980 return stub_entry;
2981}
2982
4106101c
MS		 2983/* Add a new stub entry in the final stub section to the stub hash.
2984 Not all fields of the new stub entry are initialised. */
2985
2986static struct elf_aarch64_stub_hash_entry *
2987_bfd_aarch64_add_stub_entry_after (const char *stub_name,
2988 asection *link_section,
2989 struct elf_aarch64_link_hash_table *htab)
2990{
2991 asection *stub_sec;
2992 struct elf_aarch64_stub_hash_entry *stub_entry;
2993
2994 stub_sec = _bfd_aarch64_get_stub_for_link_section (link_section, htab);
2995 stub_entry = aarch64_stub_hash_lookup (&htab->stub_hash_table, stub_name,
2996 TRUE, FALSE);
2997 if (stub_entry == NULL)
2998 {
4eca0228 2999 _bfd_error_handler (_("cannot create stub entry %s"), stub_name);
4106101c
MS		 3000 return NULL;
3001 }
3002
3003 stub_entry->stub_sec = stub_sec;
3004 stub_entry->stub_offset = 0;
3005 stub_entry->id_sec = link_section;
3006
3007 return stub_entry;
3008}
3009
3010
a06ea964
NC		 3011static bfd_boolean
3012aarch64_build_one_stub (struct bfd_hash_entry *gen_entry,
3013 void *in_arg ATTRIBUTE_UNUSED)
3014{
cec5225b 3015 struct elf_aarch64_stub_hash_entry *stub_entry;
a06ea964
NC		 3016 asection *stub_sec;
3017 bfd *stub_bfd;
3018 bfd_byte *loc;
3019 bfd_vma sym_value;
68fcca92
JW		 3020 bfd_vma veneered_insn_loc;
3021 bfd_vma veneer_entry_loc;
3022 bfd_signed_vma branch_offset = 0;
a06ea964
NC		 3023 unsigned int template_size;
3024 const uint32_t *template;
3025 unsigned int i;
3026
3027 /* Massage our args to the form they really have. */
cec5225b 3028 stub_entry = (struct elf_aarch64_stub_hash_entry *) gen_entry;
a06ea964
NC		 3029
3030 stub_sec = stub_entry->stub_sec;
3031
3032 /* Make a note of the offset within the stubs for this entry. */
3033 stub_entry->stub_offset = stub_sec->size;
3034 loc = stub_sec->contents + stub_entry->stub_offset;
3035
3036 stub_bfd = stub_sec->owner;
3037
3038 /* This is the address of the stub destination. */
3039 sym_value = (stub_entry->target_value
3040 + stub_entry->target_section->output_offset
3041 + stub_entry->target_section->output_section->vma);
3042
3043 if (stub_entry->stub_type == aarch64_stub_long_branch)
3044 {
3045 bfd_vma place = (stub_entry->stub_offset + stub_sec->output_section->vma
3046 + stub_sec->output_offset);
3047
3048 /* See if we can relax the stub. */
3049 if (aarch64_valid_for_adrp_p (sym_value, place))
3050 stub_entry->stub_type = aarch64_select_branch_stub (sym_value, place);
3051 }
3052
3053 switch (stub_entry->stub_type)
3054 {
3055 case aarch64_stub_adrp_branch:
3056 template = aarch64_adrp_branch_stub;
3057 template_size = sizeof (aarch64_adrp_branch_stub);
3058 break;
3059 case aarch64_stub_long_branch:
3060 template = aarch64_long_branch_stub;
3061 template_size = sizeof (aarch64_long_branch_stub);
3062 break;
68fcca92
JW		 3063 case aarch64_stub_erratum_835769_veneer:
3064 template = aarch64_erratum_835769_stub;
3065 template_size = sizeof (aarch64_erratum_835769_stub);
3066 break;
4106101c
MS		 3067 case aarch64_stub_erratum_843419_veneer:
3068 template = aarch64_erratum_843419_stub;
3069 template_size = sizeof (aarch64_erratum_843419_stub);
3070 break;
a06ea964 3071 default:
8e2fe09f 3072 abort ();
a06ea964
NC		 3073 }
3074
3075 for (i = 0; i < (template_size / sizeof template[0]); i++)
3076 {
3077 bfd_putl32 (template[i], loc);
3078 loc += 4;
3079 }
3080
3081 template_size = (template_size + 7) & ~7;
3082 stub_sec->size += template_size;
3083
3084 switch (stub_entry->stub_type)
3085 {
3086 case aarch64_stub_adrp_branch:
1d75a8e2
NC		 3087 if (!aarch64_relocate (AARCH64_R (ADR_PREL_PG_HI21), stub_bfd, stub_sec,
3088 stub_entry->stub_offset, sym_value))
a06ea964
NC		 3089 /* The stub would not have been relaxed if the offset was out
3090 of range. */
3091 BFD_FAIL ();
3092
1d75a8e2
NC		 3093 if (!aarch64_relocate (AARCH64_R (ADD_ABS_LO12_NC), stub_bfd, stub_sec,
3094 stub_entry->stub_offset + 4, sym_value))
93ca8569 3095 BFD_FAIL ();
a06ea964
NC		 3096 break;
3097
3098 case aarch64_stub_long_branch:
3099 /* We want the value relative to the address 12 bytes back from the
07d6d2b8 3100 value itself. */
1d75a8e2
NC		 3101 if (!aarch64_relocate (AARCH64_R (PRELNN), stub_bfd, stub_sec,
3102 stub_entry->stub_offset + 16, sym_value + 12))
93ca8569 3103 BFD_FAIL ();
a06ea964 3104 break;
68fcca92
JW		 3105
3106 case aarch64_stub_erratum_835769_veneer:
3107 veneered_insn_loc = stub_entry->target_section->output_section->vma
3108 + stub_entry->target_section->output_offset
3109 + stub_entry->target_value;
3110 veneer_entry_loc = stub_entry->stub_sec->output_section->vma
3111 + stub_entry->stub_sec->output_offset
3112 + stub_entry->stub_offset;
3113 branch_offset = veneered_insn_loc - veneer_entry_loc;
3114 branch_offset >>= 2;
3115 branch_offset &= 0x3ffffff;
3116 bfd_putl32 (stub_entry->veneered_insn,
3117 stub_sec->contents + stub_entry->stub_offset);
3118 bfd_putl32 (template[1] | branch_offset,
3119 stub_sec->contents + stub_entry->stub_offset + 4);
3120 break;
3121
4106101c 3122 case aarch64_stub_erratum_843419_veneer:
1d75a8e2
NC		 3123 if (!aarch64_relocate (AARCH64_R (JUMP26), stub_bfd, stub_sec,
3124 stub_entry->stub_offset + 4, sym_value + 4))
4106101c
MS		 3125 BFD_FAIL ();
3126 break;
3127
a06ea964 3128 default:
8e2fe09f 3129 abort ();
a06ea964
NC		 3130 }
3131
3132 return TRUE;
3133}
3134
3135/* As above, but don't actually build the stub. Just bump offset so
3136 we know stub section sizes. */
3137
3138static bfd_boolean
3139aarch64_size_one_stub (struct bfd_hash_entry *gen_entry,
3140 void *in_arg ATTRIBUTE_UNUSED)
3141{
cec5225b 3142 struct elf_aarch64_stub_hash_entry *stub_entry;
a06ea964
NC		 3143 int size;
3144
3145 /* Massage our args to the form they really have. */
cec5225b 3146 stub_entry = (struct elf_aarch64_stub_hash_entry *) gen_entry;
a06ea964
NC		 3147
3148 switch (stub_entry->stub_type)
3149 {
3150 case aarch64_stub_adrp_branch:
3151 size = sizeof (aarch64_adrp_branch_stub);
3152 break;
3153 case aarch64_stub_long_branch:
3154 size = sizeof (aarch64_long_branch_stub);
3155 break;
68fcca92
JW		 3156 case aarch64_stub_erratum_835769_veneer:
3157 size = sizeof (aarch64_erratum_835769_stub);
3158 break;
4106101c
MS		 3159 case aarch64_stub_erratum_843419_veneer:
3160 size = sizeof (aarch64_erratum_843419_stub);
3161 break;
a06ea964 3162 default:
8e2fe09f 3163 abort ();
a06ea964
NC		 3164 }
3165
3166 size = (size + 7) & ~7;
3167 stub_entry->stub_sec->size += size;
3168 return TRUE;
3169}
3170
3171/* External entry points for sizing and building linker stubs. */
3172
3173/* Set up various things so that we can make a list of input sections
3174 for each output section included in the link. Returns -1 on error,
3175 0 when no stubs will be needed, and 1 on success. */
3176
3177int
cec5225b 3178elfNN_aarch64_setup_section_lists (bfd *output_bfd,
a06ea964
NC		 3179 struct bfd_link_info *info)
3180{
3181 bfd *input_bfd;
3182 unsigned int bfd_count;
7292b3ac 3183 unsigned int top_id, top_index;
a06ea964
NC		 3184 asection *section;
3185 asection **input_list, **list;
3186 bfd_size_type amt;
cec5225b
YZ		 3187 struct elf_aarch64_link_hash_table *htab =
3188 elf_aarch64_hash_table (info);
a06ea964
NC		 3189
3190 if (!is_elf_hash_table (htab))
3191 return 0;
3192
3193 /* Count the number of input BFDs and find the top input section id. */
3194 for (input_bfd = info->input_bfds, bfd_count = 0, top_id = 0;
c72f2fb2 3195 input_bfd != NULL; input_bfd = input_bfd->link.next)
a06ea964
NC		 3196 {
3197 bfd_count += 1;
3198 for (section = input_bfd->sections;
3199 section != NULL; section = section->next)
3200 {
3201 if (top_id < section->id)
3202 top_id = section->id;
3203 }
3204 }
3205 htab->bfd_count = bfd_count;
3206
3207 amt = sizeof (struct map_stub) * (top_id + 1);
3208 htab->stub_group = bfd_zmalloc (amt);
3209 if (htab->stub_group == NULL)
3210 return -1;
3211
3212 /* We can't use output_bfd->section_count here to find the top output
3213 section index as some sections may have been removed, and
3214 _bfd_strip_section_from_output doesn't renumber the indices. */
3215 for (section = output_bfd->sections, top_index = 0;
3216 section != NULL; section = section->next)
3217 {
3218 if (top_index < section->index)
3219 top_index = section->index;
3220 }
3221
3222 htab->top_index = top_index;
3223 amt = sizeof (asection *) * (top_index + 1);
3224 input_list = bfd_malloc (amt);
3225 htab->input_list = input_list;
3226 if (input_list == NULL)
3227 return -1;
3228
3229 /* For sections we aren't interested in, mark their entries with a
3230 value we can check later. */
3231 list = input_list + top_index;
3232 do
3233 *list = bfd_abs_section_ptr;
3234 while (list-- != input_list);
3235
3236 for (section = output_bfd->sections;
3237 section != NULL; section = section->next)
3238 {
3239 if ((section->flags & SEC_CODE) != 0)
3240 input_list[section->index] = NULL;
3241 }
3242
3243 return 1;
3244}
3245
cec5225b 3246/* Used by elfNN_aarch64_next_input_section and group_sections. */
a06ea964
NC		 3247#define PREV_SEC(sec) (htab->stub_group[(sec)->id].link_sec)
3248
3249/* The linker repeatedly calls this function for each input section,
3250 in the order that input sections are linked into output sections.
3251 Build lists of input sections to determine groupings between which
3252 we may insert linker stubs. */
3253
3254void
cec5225b 3255elfNN_aarch64_next_input_section (struct bfd_link_info *info, asection *isec)
a06ea964 3256{
cec5225b
YZ		 3257 struct elf_aarch64_link_hash_table *htab =
3258 elf_aarch64_hash_table (info);
a06ea964
NC		 3259
3260 if (isec->output_section->index <= htab->top_index)
3261 {
3262 asection **list = htab->input_list + isec->output_section->index;
3263
3264 if (*list != bfd_abs_section_ptr)
3265 {
3266 /* Steal the link_sec pointer for our list. */
3267 /* This happens to make the list in reverse order,
3268 which is what we want. */
3269 PREV_SEC (isec) = *list;
3270 *list = isec;
3271 }
3272 }
3273}
3274
3275/* See whether we can group stub sections together. Grouping stub
3276 sections may result in fewer stubs. More importantly, we need to
3277 put all .init* and .fini* stubs at the beginning of the .init or
3278 .fini output sections respectively, because glibc splits the
3279 _init and _fini functions into multiple parts. Putting a stub in
3280 the middle of a function is not a good idea. */
3281
3282static void
cec5225b 3283group_sections (struct elf_aarch64_link_hash_table *htab,
a06ea964
NC		 3284 bfd_size_type stub_group_size,
3285 bfd_boolean stubs_always_before_branch)
3286{
3287 asection **list = htab->input_list + htab->top_index;
3288
3289 do
3290 {
3291 asection *tail = *list;
3292
3293 if (tail == bfd_abs_section_ptr)
3294 continue;
3295
3296 while (tail != NULL)
3297 {
3298 asection *curr;
3299 asection *prev;
3300 bfd_size_type total;
3301
3302 curr = tail;
3303 total = tail->size;
3304 while ((prev = PREV_SEC (curr)) != NULL
3305 && ((total += curr->output_offset - prev->output_offset)
3306 < stub_group_size))
3307 curr = prev;
3308
3309 /* OK, the size from the start of CURR to the end is less
3310 than stub_group_size and thus can be handled by one stub
3311 section. (Or the tail section is itself larger than
3312 stub_group_size, in which case we may be toast.)
3313 We should really be keeping track of the total size of
3314 stubs added here, as stubs contribute to the final output
3315 section size. */
3316 do
3317 {
3318 prev = PREV_SEC (tail);
3319 /* Set up this stub group. */
3320 htab->stub_group[tail->id].link_sec = curr;
3321 }
3322 while (tail != curr && (tail = prev) != NULL);
3323
3324 /* But wait, there's more! Input sections up to stub_group_size
3325 bytes before the stub section can be handled by it too. */
3326 if (!stubs_always_before_branch)
3327 {
3328 total = 0;
3329 while (prev != NULL
3330 && ((total += tail->output_offset - prev->output_offset)
3331 < stub_group_size))
3332 {
3333 tail = prev;
3334 prev = PREV_SEC (tail);
3335 htab->stub_group[tail->id].link_sec = curr;
3336 }
3337 }
3338 tail = prev;
3339 }
3340 }
3341 while (list-- != htab->input_list);
3342
3343 free (htab->input_list);
3344}
3345
3346#undef PREV_SEC
3347
68fcca92
JW		 3348#define AARCH64_BITS(x, pos, n) (((x) >> (pos)) & ((1 << (n)) - 1))
3349
3350#define AARCH64_RT(insn) AARCH64_BITS (insn, 0, 5)
3351#define AARCH64_RT2(insn) AARCH64_BITS (insn, 10, 5)
3352#define AARCH64_RA(insn) AARCH64_BITS (insn, 10, 5)
3353#define AARCH64_RD(insn) AARCH64_BITS (insn, 0, 5)
3354#define AARCH64_RN(insn) AARCH64_BITS (insn, 5, 5)
3355#define AARCH64_RM(insn) AARCH64_BITS (insn, 16, 5)
3356
3357#define AARCH64_MAC(insn) (((insn) & 0xff000000) == 0x9b000000)
3358#define AARCH64_BIT(insn, n) AARCH64_BITS (insn, n, 1)
3359#define AARCH64_OP31(insn) AARCH64_BITS (insn, 21, 3)
3360#define AARCH64_ZR 0x1f
3361
3362/* All ld/st ops. See C4-182 of the ARM ARM. The encoding space for
3363 LD_PCREL, LDST_RO, LDST_UI and LDST_UIMM cover prefetch ops. */
3364
3365#define AARCH64_LD(insn) (AARCH64_BIT (insn, 22) == 1)
3366#define AARCH64_LDST(insn) (((insn) & 0x0a000000) == 0x08000000)
3367#define AARCH64_LDST_EX(insn) (((insn) & 0x3f000000) == 0x08000000)
3368#define AARCH64_LDST_PCREL(insn) (((insn) & 0x3b000000) == 0x18000000)
3369#define AARCH64_LDST_NAP(insn) (((insn) & 0x3b800000) == 0x28000000)
3370#define AARCH64_LDSTP_PI(insn) (((insn) & 0x3b800000) == 0x28800000)
3371#define AARCH64_LDSTP_O(insn) (((insn) & 0x3b800000) == 0x29000000)
3372#define AARCH64_LDSTP_PRE(insn) (((insn) & 0x3b800000) == 0x29800000)
3373#define AARCH64_LDST_UI(insn) (((insn) & 0x3b200c00) == 0x38000000)
3374#define AARCH64_LDST_PIIMM(insn) (((insn) & 0x3b200c00) == 0x38000400)
3375#define AARCH64_LDST_U(insn) (((insn) & 0x3b200c00) == 0x38000800)
3376#define AARCH64_LDST_PREIMM(insn) (((insn) & 0x3b200c00) == 0x38000c00)
3377#define AARCH64_LDST_RO(insn) (((insn) & 0x3b200c00) == 0x38200800)
3378#define AARCH64_LDST_UIMM(insn) (((insn) & 0x3b000000) == 0x39000000)
3379#define AARCH64_LDST_SIMD_M(insn) (((insn) & 0xbfbf0000) == 0x0c000000)
3380#define AARCH64_LDST_SIMD_M_PI(insn) (((insn) & 0xbfa00000) == 0x0c800000)
3381#define AARCH64_LDST_SIMD_S(insn) (((insn) & 0xbf9f0000) == 0x0d000000)
3382#define AARCH64_LDST_SIMD_S_PI(insn) (((insn) & 0xbf800000) == 0x0d800000)
3383
3d14faea
MS		 3384/* Classify an INSN if it is indeed a load/store.
3385
3386 Return TRUE if INSN is a LD/ST instruction otherwise return FALSE.
3387
3388 For scalar LD/ST instructions PAIR is FALSE, RT is returned and RT2
3389 is set equal to RT.
3390
2d0ca824 3391 For LD/ST pair instructions PAIR is TRUE, RT and RT2 are returned. */
68fcca92
JW		 3392
3393static bfd_boolean
3d14faea 3394aarch64_mem_op_p (uint32_t insn, unsigned int *rt, unsigned int *rt2,
68fcca92
JW		 3395 bfd_boolean *pair, bfd_boolean *load)
3396{
3397 uint32_t opcode;
3398 unsigned int r;
3399 uint32_t opc = 0;
3400 uint32_t v = 0;
3401 uint32_t opc_v = 0;
3402
de194d85 3403 /* Bail out quickly if INSN doesn't fall into the load-store
68fcca92
JW		 3404 encoding space. */
3405 if (!AARCH64_LDST (insn))
3406 return FALSE;
3407
3408 *pair = FALSE;
3409 *load = FALSE;
3410 if (AARCH64_LDST_EX (insn))
3411 {
3412 *rt = AARCH64_RT (insn);
3d14faea 3413 *rt2 = *rt;
68fcca92 3414 if (AARCH64_BIT (insn, 21) == 1)
07d6d2b8 3415 {
68fcca92 3416 *pair = TRUE;
3d14faea 3417 *rt2 = AARCH64_RT2 (insn);
68fcca92
JW		 3418 }
3419 *load = AARCH64_LD (insn);
3420 return TRUE;
3421 }
3422 else if (AARCH64_LDST_NAP (insn)
3423 || AARCH64_LDSTP_PI (insn)
3424 || AARCH64_LDSTP_O (insn)
3425 || AARCH64_LDSTP_PRE (insn))
3426 {
3427 *pair = TRUE;
3428 *rt = AARCH64_RT (insn);
3d14faea 3429 *rt2 = AARCH64_RT2 (insn);
68fcca92
JW		 3430 *load = AARCH64_LD (insn);
3431 return TRUE;
3432 }
3433 else if (AARCH64_LDST_PCREL (insn)
3434 || AARCH64_LDST_UI (insn)
3435 || AARCH64_LDST_PIIMM (insn)
3436 || AARCH64_LDST_U (insn)
3437 || AARCH64_LDST_PREIMM (insn)
3438 || AARCH64_LDST_RO (insn)
3439 || AARCH64_LDST_UIMM (insn))
3440 {
3441 *rt = AARCH64_RT (insn);
3d14faea 3442 *rt2 = *rt;
68fcca92
JW		 3443 if (AARCH64_LDST_PCREL (insn))
3444 *load = TRUE;
3445 opc = AARCH64_BITS (insn, 22, 2);
3446 v = AARCH64_BIT (insn, 26);
3447 opc_v = opc | (v << 2);
3448 *load = (opc_v == 1 || opc_v == 2 || opc_v == 3
3449 || opc_v == 5 || opc_v == 7);
3450 return TRUE;
3451 }
3452 else if (AARCH64_LDST_SIMD_M (insn)
3453 || AARCH64_LDST_SIMD_M_PI (insn))
3454 {
3455 *rt = AARCH64_RT (insn);
3456 *load = AARCH64_BIT (insn, 22);
3457 opcode = (insn >> 12) & 0xf;
3458 switch (opcode)
3459 {
3460 case 0:
3461 case 2:
3d14faea 3462 *rt2 = *rt + 3;
68fcca92
JW		 3463 break;
3464
3465 case 4:
3466 case 6:
3d14faea 3467 *rt2 = *rt + 2;
68fcca92
JW		 3468 break;
3469
3470 case 7:
3d14faea 3471 *rt2 = *rt;
68fcca92
JW		 3472 break;
3473
3474 case 8:
3475 case 10:
3d14faea 3476 *rt2 = *rt + 1;
68fcca92
JW		 3477 break;
3478
3479 default:
3480 return FALSE;
3481 }
3482 return TRUE;
3483 }
3484 else if (AARCH64_LDST_SIMD_S (insn)
3485 || AARCH64_LDST_SIMD_S_PI (insn))
3486 {
3487 *rt = AARCH64_RT (insn);
3488 r = (insn >> 21) & 1;
3489 *load = AARCH64_BIT (insn, 22);
3490 opcode = (insn >> 13) & 0x7;
3491 switch (opcode)
3492 {
3493 case 0:
3494 case 2:
3495 case 4:
3d14faea 3496 *rt2 = *rt + r;
68fcca92
JW		 3497 break;
3498
3499 case 1:
3500 case 3:
3501 case 5:
3d14faea 3502 *rt2 = *rt + (r == 0 ? 2 : 3);
68fcca92
JW		 3503 break;
3504
3505 case 6:
3d14faea 3506 *rt2 = *rt + r;
68fcca92
JW		 3507 break;
3508
3509 case 7:
3d14faea 3510 *rt2 = *rt + (r == 0 ? 2 : 3);
68fcca92
JW		 3511 break;
3512
3513 default:
3514 return FALSE;
3515 }
3516 return TRUE;
3517 }
3518
3519 return FALSE;
3520}
3521
3522/* Return TRUE if INSN is multiply-accumulate. */
3523
3524static bfd_boolean
3525aarch64_mlxl_p (uint32_t insn)
3526{
3527 uint32_t op31 = AARCH64_OP31 (insn);
3528
3529 if (AARCH64_MAC (insn)
3530 && (op31 == 0 || op31 == 1 || op31 == 5)
3531 /* Exclude MUL instructions which are encoded as a multiple accumulate
3532 with RA = XZR. */
3533 && AARCH64_RA (insn) != AARCH64_ZR)
3534 return TRUE;
3535
3536 return FALSE;
3537}
3538
3539/* Some early revisions of the Cortex-A53 have an erratum (835769) whereby
3540 it is possible for a 64-bit multiply-accumulate instruction to generate an
3541 incorrect result. The details are quite complex and hard to
3542 determine statically, since branches in the code may exist in some
3543 circumstances, but all cases end with a memory (load, store, or
3544 prefetch) instruction followed immediately by the multiply-accumulate
3545 operation. We employ a linker patching technique, by moving the potentially
3546 affected multiply-accumulate instruction into a patch region and replacing
3547 the original instruction with a branch to the patch. This function checks
3548 if INSN_1 is the memory operation followed by a multiply-accumulate
3549 operation (INSN_2). Return TRUE if an erratum sequence is found, FALSE
3550 if INSN_1 and INSN_2 are safe. */
3551
3552static bfd_boolean
3553aarch64_erratum_sequence (uint32_t insn_1, uint32_t insn_2)
3554{
3555 uint32_t rt;
3d14faea 3556 uint32_t rt2;
68fcca92
JW		 3557 uint32_t rn;
3558 uint32_t rm;
3559 uint32_t ra;
3560 bfd_boolean pair;
3561 bfd_boolean load;
3562
3563 if (aarch64_mlxl_p (insn_2)
3d14faea 3564 && aarch64_mem_op_p (insn_1, &rt, &rt2, &pair, &load))
68fcca92
JW		 3565 {
3566 /* Any SIMD memory op is independent of the subsequent MLA
3567 by definition of the erratum. */
3568 if (AARCH64_BIT (insn_1, 26))
3569 return TRUE;
3570
3571 /* If not SIMD, check for integer memory ops and MLA relationship. */
3572 rn = AARCH64_RN (insn_2);
3573 ra = AARCH64_RA (insn_2);
3574 rm = AARCH64_RM (insn_2);
3575
3576 /* If this is a load and there's a true(RAW) dependency, we are safe
3577 and this is not an erratum sequence. */
3578 if (load &&
3579 (rt == rn || rt == rm || rt == ra
3d14faea 3580 || (pair && (rt2 == rn || rt2 == rm || rt2 == ra))))
68fcca92
JW		 3581 return FALSE;
3582
3583 /* We conservatively put out stubs for all other cases (including
3584 writebacks). */
3585 return TRUE;
3586 }
3587
3588 return FALSE;
3589}
3590
520c7b56
JW		 3591/* Used to order a list of mapping symbols by address. */
3592
3593static int
3594elf_aarch64_compare_mapping (const void *a, const void *b)
3595{
3596 const elf_aarch64_section_map *amap = (const elf_aarch64_section_map *) a;
3597 const elf_aarch64_section_map *bmap = (const elf_aarch64_section_map *) b;
3598
3599 if (amap->vma > bmap->vma)
3600 return 1;
3601 else if (amap->vma < bmap->vma)
3602 return -1;
3603 else if (amap->type > bmap->type)
3604 /* Ensure results do not depend on the host qsort for objects with
3605 multiple mapping symbols at the same address by sorting on type
3606 after vma. */
3607 return 1;
3608 else if (amap->type < bmap->type)
3609 return -1;
3610 else
3611 return 0;
3612}
3613
2144188d 3614
35fee8b7
MS		 3615static char *
3616_bfd_aarch64_erratum_835769_stub_name (unsigned num_fixes)
3617{
3618 char *stub_name = (char *) bfd_malloc
3619 (strlen ("__erratum_835769_veneer_") + 16);
3620 sprintf (stub_name,"__erratum_835769_veneer_%d", num_fixes);
3621 return stub_name;
3622}
3623
4106101c 3624/* Scan for Cortex-A53 erratum 835769 sequence.
2144188d
MS		 3625
3626 Return TRUE else FALSE on abnormal termination. */
3627
68fcca92 3628static bfd_boolean
5421cc6e
MS		 3629_bfd_aarch64_erratum_835769_scan (bfd *input_bfd,
3630 struct bfd_link_info *info,
3631 unsigned int *num_fixes_p)
68fcca92
JW		 3632{
3633 asection *section;
3634 struct elf_aarch64_link_hash_table *htab = elf_aarch64_hash_table (info);
68fcca92 3635 unsigned int num_fixes = *num_fixes_p;
68fcca92
JW		 3636
3637 if (htab == NULL)
2144188d 3638 return TRUE;
68fcca92
JW		 3639
3640 for (section = input_bfd->sections;
3641 section != NULL;
3642 section = section->next)
3643 {
3644 bfd_byte *contents = NULL;
3645 struct _aarch64_elf_section_data *sec_data;
3646 unsigned int span;
3647
3648 if (elf_section_type (section) != SHT_PROGBITS
3649 || (elf_section_flags (section) & SHF_EXECINSTR) == 0
3650 || (section->flags & SEC_EXCLUDE) != 0
3651 || (section->sec_info_type == SEC_INFO_TYPE_JUST_SYMS)
3652 || (section->output_section == bfd_abs_section_ptr))
3653 continue;
3654
3655 if (elf_section_data (section)->this_hdr.contents != NULL)
3656 contents = elf_section_data (section)->this_hdr.contents;
3657 else if (! bfd_malloc_and_get_section (input_bfd, section, &contents))
2144188d 3658 return FALSE;
68fcca92
JW		 3659
3660 sec_data = elf_aarch64_section_data (section);
520c7b56
JW		 3661
3662 qsort (sec_data->map, sec_data->mapcount,
3663 sizeof (elf_aarch64_section_map), elf_aarch64_compare_mapping);
3664
68fcca92
JW		 3665 for (span = 0; span < sec_data->mapcount; span++)
3666 {
3667 unsigned int span_start = sec_data->map[span].vma;
3668 unsigned int span_end = ((span == sec_data->mapcount - 1)
3669 ? sec_data->map[0].vma + section->size
3670 : sec_data->map[span + 1].vma);
3671 unsigned int i;
3672 char span_type = sec_data->map[span].type;
3673
3674 if (span_type == 'd')
3675 continue;
3676
3677 for (i = span_start; i + 4 < span_end; i += 4)
3678 {
3679 uint32_t insn_1 = bfd_getl32 (contents + i);
3680 uint32_t insn_2 = bfd_getl32 (contents + i + 4);
3681
3682 if (aarch64_erratum_sequence (insn_1, insn_2))
3683 {
5421cc6e 3684 struct elf_aarch64_stub_hash_entry *stub_entry;
35fee8b7
MS		 3685 char *stub_name = _bfd_aarch64_erratum_835769_stub_name (num_fixes);
3686 if (! stub_name)
2144188d 3687 return FALSE;
68fcca92 3688
5421cc6e
MS		 3689 stub_entry = _bfd_aarch64_add_stub_entry_in_group (stub_name,
3690 section,
3691 htab);
3692 if (! stub_entry)
3693 return FALSE;
68fcca92 3694
5421cc6e
MS		 3695 stub_entry->stub_type = aarch64_stub_erratum_835769_veneer;
3696 stub_entry->target_section = section;
3697 stub_entry->target_value = i + 4;
3698 stub_entry->veneered_insn = insn_2;
3699 stub_entry->output_name = stub_name;
68fcca92
JW		 3700 num_fixes++;
3701 }
3702 }
3703 }
3704 if (elf_section_data (section)->this_hdr.contents == NULL)
3705 free (contents);
3706 }
3707
357d1523
MS		 3708 *num_fixes_p = num_fixes;
3709
2144188d 3710 return TRUE;
68fcca92
JW		 3711}
3712
13f622ec 3713
4106101c
MS		 3714/* Test if instruction INSN is ADRP. */
3715
3716static bfd_boolean
3717_bfd_aarch64_adrp_p (uint32_t insn)
3718{
3719 return ((insn & 0x9f000000) == 0x90000000);
3720}
3721
3722
3723/* Helper predicate to look for cortex-a53 erratum 843419 sequence 1. */
3724
3725static bfd_boolean
3726_bfd_aarch64_erratum_843419_sequence_p (uint32_t insn_1, uint32_t insn_2,
3727 uint32_t insn_3)
3728{
3729 uint32_t rt;
3730 uint32_t rt2;
3731 bfd_boolean pair;
3732 bfd_boolean load;
3733
3734 return (aarch64_mem_op_p (insn_2, &rt, &rt2, &pair, &load)
3735 && (!pair
3736 || (pair && !load))
3737 && AARCH64_LDST_UIMM (insn_3)
3738 && AARCH64_RN (insn_3) == AARCH64_RD (insn_1));
3739}
3740
3741
3742/* Test for the presence of Cortex-A53 erratum 843419 instruction sequence.
3743
3744 Return TRUE if section CONTENTS at offset I contains one of the
3745 erratum 843419 sequences, otherwise return FALSE. If a sequence is
3746 seen set P_VENEER_I to the offset of the final LOAD/STORE
3747 instruction in the sequence.
3748 */
3749
3750static bfd_boolean
3751_bfd_aarch64_erratum_843419_p (bfd_byte *contents, bfd_vma vma,
3752 bfd_vma i, bfd_vma span_end,
3753 bfd_vma *p_veneer_i)
3754{
3755 uint32_t insn_1 = bfd_getl32 (contents + i);
3756
3757 if (!_bfd_aarch64_adrp_p (insn_1))
3758 return FALSE;
3759
3760 if (span_end < i + 12)
3761 return FALSE;
3762
3763 uint32_t insn_2 = bfd_getl32 (contents + i + 4);
3764 uint32_t insn_3 = bfd_getl32 (contents + i + 8);
3765
3766 if ((vma & 0xfff) != 0xff8 && (vma & 0xfff) != 0xffc)
3767 return FALSE;
3768
3769 if (_bfd_aarch64_erratum_843419_sequence_p (insn_1, insn_2, insn_3))
3770 {
3771 *p_veneer_i = i + 8;
3772 return TRUE;
3773 }
3774
3775 if (span_end < i + 16)
3776 return FALSE;
3777
3778 uint32_t insn_4 = bfd_getl32 (contents + i + 12);
3779
3780 if (_bfd_aarch64_erratum_843419_sequence_p (insn_1, insn_2, insn_4))
3781 {
3782 *p_veneer_i = i + 12;
3783 return TRUE;
3784 }
3785
3786 return FALSE;
3787}
3788
3789
13f622ec
MS		 3790/* Resize all stub sections. */
3791
3792static void
3793_bfd_aarch64_resize_stubs (struct elf_aarch64_link_hash_table *htab)
3794{
3795 asection *section;
3796
3797 /* OK, we've added some stubs. Find out the new size of the
3798 stub sections. */
3799 for (section = htab->stub_bfd->sections;
3800 section != NULL; section = section->next)
3801 {
3802 /* Ignore non-stub sections. */
3803 if (!strstr (section->name, STUB_SUFFIX))
3804 continue;
3805 section->size = 0;
3806 }
3807
3808 bfd_hash_traverse (&htab->stub_hash_table, aarch64_size_one_stub, htab);
13f622ec 3809
61865519
MS		 3810 for (section = htab->stub_bfd->sections;
3811 section != NULL; section = section->next)
3812 {
3813 if (!strstr (section->name, STUB_SUFFIX))
3814 continue;
3815
3816 if (section->size)
3817 section->size += 4;
4106101c
MS		 3818
3819 /* Ensure all stub sections have a size which is a multiple of
3820 4096. This is important in order to ensure that the insertion
3821 of stub sections does not in itself move existing code around
3822 in such a way that new errata sequences are created. */
3823 if (htab->fix_erratum_843419)
3824 if (section->size)
3825 section->size = BFD_ALIGN (section->size, 0x1000);
3826 }
3827}
3828
3829
3830/* Construct an erratum 843419 workaround stub name.
3831 */
3832
3833static char *
3834_bfd_aarch64_erratum_843419_stub_name (asection *input_section,
3835 bfd_vma offset)
3836{
3837 const bfd_size_type len = 8 + 4 + 1 + 8 + 1 + 16 + 1;
3838 char *stub_name = bfd_malloc (len);
3839
3840 if (stub_name != NULL)
3841 snprintf (stub_name, len, "e843419@%04x_%08x_%" BFD_VMA_FMT "x",
3842 input_section->owner->id,
3843 input_section->id,
3844 offset);
3845 return stub_name;
3846}
3847
3848/* Build a stub_entry structure describing an 843419 fixup.
3849
3850 The stub_entry constructed is populated with the bit pattern INSN
3851 of the instruction located at OFFSET within input SECTION.
3852
3853 Returns TRUE on success. */
3854
3855static bfd_boolean
3856_bfd_aarch64_erratum_843419_fixup (uint32_t insn,
3857 bfd_vma adrp_offset,
3858 bfd_vma ldst_offset,
3859 asection *section,
3860 struct bfd_link_info *info)
3861{
3862 struct elf_aarch64_link_hash_table *htab = elf_aarch64_hash_table (info);
3863 char *stub_name;
3864 struct elf_aarch64_stub_hash_entry *stub_entry;
3865
3866 stub_name = _bfd_aarch64_erratum_843419_stub_name (section, ldst_offset);
3867 stub_entry = aarch64_stub_hash_lookup (&htab->stub_hash_table, stub_name,
3868 FALSE, FALSE);
3869 if (stub_entry)
3870 {
3871 free (stub_name);
3872 return TRUE;
3873 }
3874
3875 /* We always place an 843419 workaround veneer in the stub section
3876 attached to the input section in which an erratum sequence has
3877 been found. This ensures that later in the link process (in
3878 elfNN_aarch64_write_section) when we copy the veneered
3879 instruction from the input section into the stub section the
3880 copied instruction will have had any relocations applied to it.
3881 If we placed workaround veneers in any other stub section then we
3882 could not assume that all relocations have been processed on the
3883 corresponding input section at the point we output the stub
3884 section.
3885 */
3886
3887 stub_entry = _bfd_aarch64_add_stub_entry_after (stub_name, section, htab);
3888 if (stub_entry == NULL)
3889 {
3890 free (stub_name);
3891 return FALSE;
3892 }
3893
3894 stub_entry->adrp_offset = adrp_offset;
3895 stub_entry->target_value = ldst_offset;
3896 stub_entry->target_section = section;
3897 stub_entry->stub_type = aarch64_stub_erratum_843419_veneer;
3898 stub_entry->veneered_insn = insn;
3899 stub_entry->output_name = stub_name;
3900
3901 return TRUE;
3902}
3903
3904
3905/* Scan an input section looking for the signature of erratum 843419.
3906
3907 Scans input SECTION in INPUT_BFD looking for erratum 843419
3908 signatures, for each signature found a stub_entry is created
3909 describing the location of the erratum for subsequent fixup.
3910
3911 Return TRUE on successful scan, FALSE on failure to scan.
3912 */
3913
3914static bfd_boolean
3915_bfd_aarch64_erratum_843419_scan (bfd *input_bfd, asection *section,
3916 struct bfd_link_info *info)
3917{
3918 struct elf_aarch64_link_hash_table *htab = elf_aarch64_hash_table (info);
3919
3920 if (htab == NULL)
3921 return TRUE;
3922
3923 if (elf_section_type (section) != SHT_PROGBITS
3924 || (elf_section_flags (section) & SHF_EXECINSTR) == 0
3925 || (section->flags & SEC_EXCLUDE) != 0
3926 || (section->sec_info_type == SEC_INFO_TYPE_JUST_SYMS)
3927 || (section->output_section == bfd_abs_section_ptr))
3928 return TRUE;
3929
3930 do
3931 {
3932 bfd_byte *contents = NULL;
3933 struct _aarch64_elf_section_data *sec_data;
3934 unsigned int span;
3935
3936 if (elf_section_data (section)->this_hdr.contents != NULL)
3937 contents = elf_section_data (section)->this_hdr.contents;
3938 else if (! bfd_malloc_and_get_section (input_bfd, section, &contents))
3939 return FALSE;
3940
3941 sec_data = elf_aarch64_section_data (section);
3942
3943 qsort (sec_data->map, sec_data->mapcount,
3944 sizeof (elf_aarch64_section_map), elf_aarch64_compare_mapping);
3945
3946 for (span = 0; span < sec_data->mapcount; span++)
3947 {
3948 unsigned int span_start = sec_data->map[span].vma;
3949 unsigned int span_end = ((span == sec_data->mapcount - 1)
3950 ? sec_data->map[0].vma + section->size
3951 : sec_data->map[span + 1].vma);
3952 unsigned int i;
3953 char span_type = sec_data->map[span].type;
3954
3955 if (span_type == 'd')
3956 continue;
3957
3958 for (i = span_start; i + 8 < span_end; i += 4)
3959 {
3960 bfd_vma vma = (section->output_section->vma
3961 + section->output_offset
3962 + i);
3963 bfd_vma veneer_i;
3964
3965 if (_bfd_aarch64_erratum_843419_p
3966 (contents, vma, i, span_end, &veneer_i))
3967 {
3968 uint32_t insn = bfd_getl32 (contents + veneer_i);
3969
3970 if (!_bfd_aarch64_erratum_843419_fixup (insn, i, veneer_i,
3971 section, info))
3972 return FALSE;
3973 }
3974 }
3975 }
3976
3977 if (elf_section_data (section)->this_hdr.contents == NULL)
3978 free (contents);
61865519 3979 }
4106101c
MS		 3980 while (0);
3981
3982 return TRUE;
61865519 3983}
13f622ec 3984
4106101c 3985
a06ea964
NC		 3986/* Determine and set the size of the stub section for a final link.
3987
3988 The basic idea here is to examine all the relocations looking for
3989 PC-relative calls to a target that is unreachable with a "bl"
3990 instruction. */
3991
3992bfd_boolean
cec5225b 3993elfNN_aarch64_size_stubs (bfd *output_bfd,
a06ea964
NC		 3994 bfd *stub_bfd,
3995 struct bfd_link_info *info,
3996 bfd_signed_vma group_size,
3997 asection * (*add_stub_section) (const char *,
3998 asection *),
3999 void (*layout_sections_again) (void))
4000{
4001 bfd_size_type stub_group_size;
4002 bfd_boolean stubs_always_before_branch;
5421cc6e 4003 bfd_boolean stub_changed = FALSE;
cec5225b 4004 struct elf_aarch64_link_hash_table *htab = elf_aarch64_hash_table (info);
68fcca92 4005 unsigned int num_erratum_835769_fixes = 0;
a06ea964
NC		 4006
4007 /* Propagate mach to stub bfd, because it may not have been
4008 finalized when we created stub_bfd. */
4009 bfd_set_arch_mach (stub_bfd, bfd_get_arch (output_bfd),
4010 bfd_get_mach (output_bfd));
4011
4012 /* Stash our params away. */
4013 htab->stub_bfd = stub_bfd;
4014 htab->add_stub_section = add_stub_section;
4015 htab->layout_sections_again = layout_sections_again;
4016 stubs_always_before_branch = group_size < 0;
4017 if (group_size < 0)
4018 stub_group_size = -group_size;
4019 else
4020 stub_group_size = group_size;
4021
4022 if (stub_group_size == 1)
4023 {
4024 /* Default values. */
b9eead84 4025 /* AArch64 branch range is +-128MB. The value used is 1MB less. */
a06ea964
NC		 4026 stub_group_size = 127 * 1024 * 1024;
4027 }
4028
4029 group_sections (htab, stub_group_size, stubs_always_before_branch);
4030
4106101c
MS		 4031 (*htab->layout_sections_again) ();
4032
5421cc6e
MS		 4033 if (htab->fix_erratum_835769)
4034 {
4035 bfd *input_bfd;
4036
4037 for (input_bfd = info->input_bfds;
4038 input_bfd != NULL; input_bfd = input_bfd->link.next)
4039 if (!_bfd_aarch64_erratum_835769_scan (input_bfd, info,
4040 &num_erratum_835769_fixes))
4041 return FALSE;
4042
4106101c
MS		 4043 _bfd_aarch64_resize_stubs (htab);
4044 (*htab->layout_sections_again) ();
4045 }
4046
4047 if (htab->fix_erratum_843419)
4048 {
4049 bfd *input_bfd;
4050
4051 for (input_bfd = info->input_bfds;
4052 input_bfd != NULL;
4053 input_bfd = input_bfd->link.next)
4054 {
4055 asection *section;
4056
4057 for (section = input_bfd->sections;
4058 section != NULL;
4059 section = section->next)
4060 if (!_bfd_aarch64_erratum_843419_scan (input_bfd, section, info))
4061 return FALSE;
4062 }
4063
4064 _bfd_aarch64_resize_stubs (htab);
4065 (*htab->layout_sections_again) ();
5421cc6e
MS		 4066 }
4067
a06ea964
NC		 4068 while (1)
4069 {
4070 bfd *input_bfd;
a06ea964 4071
9b9971aa
MS		 4072 for (input_bfd = info->input_bfds;
4073 input_bfd != NULL; input_bfd = input_bfd->link.next)
a06ea964
NC		 4074 {
4075 Elf_Internal_Shdr *symtab_hdr;
4076 asection *section;
4077 Elf_Internal_Sym *local_syms = NULL;
4078
4079 /* We'll need the symbol table in a second. */
4080 symtab_hdr = &elf_tdata (input_bfd)->symtab_hdr;
4081 if (symtab_hdr->sh_info == 0)
4082 continue;
4083
4084 /* Walk over each section attached to the input bfd. */
4085 for (section = input_bfd->sections;
4086 section != NULL; section = section->next)
4087 {
4088 Elf_Internal_Rela *internal_relocs, *irelaend, *irela;
4089
4090 /* If there aren't any relocs, then there's nothing more
4091 to do. */
4092 if ((section->flags & SEC_RELOC) == 0
4093 || section->reloc_count == 0
4094 || (section->flags & SEC_CODE) == 0)
4095 continue;
4096
4097 /* If this section is a link-once section that will be
4098 discarded, then don't create any stubs. */
4099 if (section->output_section == NULL
4100 || section->output_section->owner != output_bfd)
4101 continue;
4102
4103 /* Get the relocs. */
4104 internal_relocs
4105 = _bfd_elf_link_read_relocs (input_bfd, section, NULL,
4106 NULL, info->keep_memory);
4107 if (internal_relocs == NULL)
4108 goto error_ret_free_local;
4109
4110 /* Now examine each relocation. */
4111 irela = internal_relocs;
4112 irelaend = irela + section->reloc_count;
4113 for (; irela < irelaend; irela++)
4114 {
4115 unsigned int r_type, r_indx;
cec5225b
YZ		 4116 enum elf_aarch64_stub_type stub_type;
4117 struct elf_aarch64_stub_hash_entry *stub_entry;
a06ea964
NC		 4118 asection *sym_sec;
4119 bfd_vma sym_value;
4120 bfd_vma destination;
cec5225b 4121 struct elf_aarch64_link_hash_entry *hash;
a06ea964
NC		 4122 const char *sym_name;
4123 char *stub_name;
4124 const asection *id_sec;
4125 unsigned char st_type;
4126 bfd_size_type len;
4127
cec5225b
YZ		 4128 r_type = ELFNN_R_TYPE (irela->r_info);
4129 r_indx = ELFNN_R_SYM (irela->r_info);
a06ea964
NC		 4130
4131 if (r_type >= (unsigned int) R_AARCH64_end)
4132 {
4133 bfd_set_error (bfd_error_bad_value);
4134 error_ret_free_internal:
4135 if (elf_section_data (section)->relocs == NULL)
4136 free (internal_relocs);
4137 goto error_ret_free_local;
4138 }
4139
4140 /* Only look for stubs on unconditional branch and
4141 branch and link instructions. */
a6bb11b2
YZ		 4142 if (r_type != (unsigned int) AARCH64_R (CALL26)
4143 && r_type != (unsigned int) AARCH64_R (JUMP26))
a06ea964
NC		 4144 continue;
4145
4146 /* Now determine the call target, its name, value,
4147 section. */
4148 sym_sec = NULL;
4149 sym_value = 0;
4150 destination = 0;
4151 hash = NULL;
4152 sym_name = NULL;
4153 if (r_indx < symtab_hdr->sh_info)
4154 {
4155 /* It's a local symbol. */
4156 Elf_Internal_Sym *sym;
4157 Elf_Internal_Shdr *hdr;
4158
4159 if (local_syms == NULL)
4160 {
4161 local_syms
4162 = (Elf_Internal_Sym *) symtab_hdr->contents;
4163 if (local_syms == NULL)
4164 local_syms
4165 = bfd_elf_get_elf_syms (input_bfd, symtab_hdr,
4166 symtab_hdr->sh_info, 0,
4167 NULL, NULL, NULL);
4168 if (local_syms == NULL)
4169 goto error_ret_free_internal;
4170 }
4171
4172 sym = local_syms + r_indx;
4173 hdr = elf_elfsections (input_bfd)[sym->st_shndx];
4174 sym_sec = hdr->bfd_section;
4175 if (!sym_sec)
4176 /* This is an undefined symbol. It can never
4177 be resolved. */
4178 continue;
4179
4180 if (ELF_ST_TYPE (sym->st_info) != STT_SECTION)
4181 sym_value = sym->st_value;
4182 destination = (sym_value + irela->r_addend
4183 + sym_sec->output_offset
4184 + sym_sec->output_section->vma);
4185 st_type = ELF_ST_TYPE (sym->st_info);
4186 sym_name
4187 = bfd_elf_string_from_elf_section (input_bfd,
4188 symtab_hdr->sh_link,
4189 sym->st_name);
4190 }
4191 else
4192 {
4193 int e_indx;
4194
4195 e_indx = r_indx - symtab_hdr->sh_info;
cec5225b 4196 hash = ((struct elf_aarch64_link_hash_entry *)
a06ea964
NC		 4197 elf_sym_hashes (input_bfd)[e_indx]);
4198
4199 while (hash->root.root.type == bfd_link_hash_indirect
4200 || hash->root.root.type == bfd_link_hash_warning)
cec5225b 4201 hash = ((struct elf_aarch64_link_hash_entry *)
a06ea964
NC		 4202 hash->root.root.u.i.link);
4203
4204 if (hash->root.root.type == bfd_link_hash_defined
4205 || hash->root.root.type == bfd_link_hash_defweak)
4206 {
cec5225b
YZ		 4207 struct elf_aarch64_link_hash_table *globals =
4208 elf_aarch64_hash_table (info);
a06ea964
NC		 4209 sym_sec = hash->root.root.u.def.section;
4210 sym_value = hash->root.root.u.def.value;
4211 /* For a destination in a shared library,
4212 use the PLT stub as target address to
4213 decide whether a branch stub is
4214 needed. */
4215 if (globals->root.splt != NULL && hash != NULL
4216 && hash->root.plt.offset != (bfd_vma) - 1)
4217 {
4218 sym_sec = globals->root.splt;
4219 sym_value = hash->root.plt.offset;
4220 if (sym_sec->output_section != NULL)
4221 destination = (sym_value
4222 + sym_sec->output_offset
4223 +
4224 sym_sec->output_section->vma);
4225 }
4226 else if (sym_sec->output_section != NULL)
4227 destination = (sym_value + irela->r_addend
4228 + sym_sec->output_offset
4229 + sym_sec->output_section->vma);
4230 }
4231 else if (hash->root.root.type == bfd_link_hash_undefined
4232 || (hash->root.root.type
4233 == bfd_link_hash_undefweak))
4234 {
4235 /* For a shared library, use the PLT stub as
4236 target address to decide whether a long
4237 branch stub is needed.
4238 For absolute code, they cannot be handled. */
cec5225b
YZ		 4239 struct elf_aarch64_link_hash_table *globals =
4240 elf_aarch64_hash_table (info);
a06ea964
NC		 4241
4242 if (globals->root.splt != NULL && hash != NULL
4243 && hash->root.plt.offset != (bfd_vma) - 1)
4244 {
4245 sym_sec = globals->root.splt;
4246 sym_value = hash->root.plt.offset;
4247 if (sym_sec->output_section != NULL)
4248 destination = (sym_value
4249 + sym_sec->output_offset
4250 +
4251 sym_sec->output_section->vma);
4252 }
4253 else
4254 continue;
4255 }
4256 else
4257 {
4258 bfd_set_error (bfd_error_bad_value);
4259 goto error_ret_free_internal;
4260 }
4261 st_type = ELF_ST_TYPE (hash->root.type);
4262 sym_name = hash->root.root.root.string;
4263 }
4264
4265 /* Determine what (if any) linker stub is needed. */
9a228467
JW		 4266 stub_type = aarch64_type_of_stub (section, irela, sym_sec,
4267 st_type, destination);
a06ea964
NC		 4268 if (stub_type == aarch64_stub_none)
4269 continue;
4270
4271 /* Support for grouping stub sections. */
4272 id_sec = htab->stub_group[section->id].link_sec;
4273
4274 /* Get the name of this stub. */
cec5225b 4275 stub_name = elfNN_aarch64_stub_name (id_sec, sym_sec, hash,
a06ea964
NC		 4276 irela);
4277 if (!stub_name)
4278 goto error_ret_free_internal;
4279
4280 stub_entry =
4281 aarch64_stub_hash_lookup (&htab->stub_hash_table,
4282 stub_name, FALSE, FALSE);
4283 if (stub_entry != NULL)
4284 {
4285 /* The proper stub has already been created. */
4286 free (stub_name);
4287 continue;
4288 }
4289
ef857521
MS		 4290 stub_entry = _bfd_aarch64_add_stub_entry_in_group
4291 (stub_name, section, htab);
a06ea964
NC		 4292 if (stub_entry == NULL)
4293 {
4294 free (stub_name);
4295 goto error_ret_free_internal;
4296 }
4297
2f340668 4298 stub_entry->target_value = sym_value + irela->r_addend;
a06ea964
NC		 4299 stub_entry->target_section = sym_sec;
4300 stub_entry->stub_type = stub_type;
4301 stub_entry->h = hash;
4302 stub_entry->st_type = st_type;
4303
4304 if (sym_name == NULL)
4305 sym_name = "unnamed";
4306 len = sizeof (STUB_ENTRY_NAME) + strlen (sym_name);
4307 stub_entry->output_name = bfd_alloc (htab->stub_bfd, len);
4308 if (stub_entry->output_name == NULL)
4309 {
4310 free (stub_name);
4311 goto error_ret_free_internal;
4312 }
4313
4314 snprintf (stub_entry->output_name, len, STUB_ENTRY_NAME,
4315 sym_name);
4316
4317 stub_changed = TRUE;
4318 }
4319
4320 /* We're done with the internal relocs, free them. */
4321 if (elf_section_data (section)->relocs == NULL)
4322 free (internal_relocs);
4323 }
4324 }
4325
4326 if (!stub_changed)
4327 break;
4328
13f622ec 4329 _bfd_aarch64_resize_stubs (htab);
a06ea964
NC		 4330
4331 /* Ask the linker to do its stuff. */
4332 (*htab->layout_sections_again) ();
4333 stub_changed = FALSE;
4334 }
4335
4336 return TRUE;
4337
4338error_ret_free_local:
4339 return FALSE;
4340}
4341
4342/* Build all the stubs associated with the current output file. The
4343 stubs are kept in a hash table attached to the main linker hash
4344 table. We also set up the .plt entries for statically linked PIC
4345 functions here. This function is called via aarch64_elf_finish in the
4346 linker. */
4347
4348bfd_boolean
cec5225b 4349elfNN_aarch64_build_stubs (struct bfd_link_info *info)
a06ea964
NC		 4350{
4351 asection *stub_sec;
4352 struct bfd_hash_table *table;
cec5225b 4353 struct elf_aarch64_link_hash_table *htab;
a06ea964 4354
cec5225b 4355 htab = elf_aarch64_hash_table (info);
a06ea964
NC		 4356
4357 for (stub_sec = htab->stub_bfd->sections;
4358 stub_sec != NULL; stub_sec = stub_sec->next)
4359 {
4360 bfd_size_type size;
4361
4362 /* Ignore non-stub sections. */
4363 if (!strstr (stub_sec->name, STUB_SUFFIX))
4364 continue;
4365
4366 /* Allocate memory to hold the linker stubs. */
4367 size = stub_sec->size;
4368 stub_sec->contents = bfd_zalloc (htab->stub_bfd, size);
4369 if (stub_sec->contents == NULL && size != 0)
4370 return FALSE;
4371 stub_sec->size = 0;
61865519
MS		 4372
4373 bfd_putl32 (0x14000000 | (size >> 2), stub_sec->contents);
4374 stub_sec->size += 4;
a06ea964
NC		 4375 }
4376
4377 /* Build the stubs as directed by the stub hash table. */
4378 table = &htab->stub_hash_table;
4379 bfd_hash_traverse (table, aarch64_build_one_stub, info);
4380
4381 return TRUE;
4382}
4383
4384
4385/* Add an entry to the code/data map for section SEC. */
4386
4387static void
cec5225b 4388elfNN_aarch64_section_map_add (asection *sec, char type, bfd_vma vma)
a06ea964
NC		 4389{
4390 struct _aarch64_elf_section_data *sec_data =
cec5225b 4391 elf_aarch64_section_data (sec);
a06ea964
NC		 4392 unsigned int newidx;
4393
4394 if (sec_data->map == NULL)
4395 {
cec5225b 4396 sec_data->map = bfd_malloc (sizeof (elf_aarch64_section_map));
a06ea964
NC		 4397 sec_data->mapcount = 0;
4398 sec_data->mapsize = 1;
4399 }
4400
4401 newidx = sec_data->mapcount++;
4402
4403 if (sec_data->mapcount > sec_data->mapsize)
4404 {
4405 sec_data->mapsize *= 2;
4406 sec_data->map = bfd_realloc_or_free
cec5225b 4407 (sec_data->map, sec_data->mapsize * sizeof (elf_aarch64_section_map));
a06ea964
NC		 4408 }
4409
4410 if (sec_data->map)
4411 {
4412 sec_data->map[newidx].vma = vma;
4413 sec_data->map[newidx].type = type;
4414 }
4415}
4416
4417
4418/* Initialise maps of insn/data for input BFDs. */
4419void
cec5225b 4420bfd_elfNN_aarch64_init_maps (bfd *abfd)
a06ea964
NC		 4421{
4422 Elf_Internal_Sym *isymbuf;
4423 Elf_Internal_Shdr *hdr;
4424 unsigned int i, localsyms;
4425
4426 /* Make sure that we are dealing with an AArch64 elf binary. */
4427 if (!is_aarch64_elf (abfd))
4428 return;
4429
4430 if ((abfd->flags & DYNAMIC) != 0)
68fcca92 4431 return;
a06ea964
NC		 4432
4433 hdr = &elf_symtab_hdr (abfd);
4434 localsyms = hdr->sh_info;
4435
4436 /* Obtain a buffer full of symbols for this BFD. The hdr->sh_info field
4437 should contain the number of local symbols, which should come before any
4438 global symbols. Mapping symbols are always local. */
4439 isymbuf = bfd_elf_get_elf_syms (abfd, hdr, localsyms, 0, NULL, NULL, NULL);
4440
4441 /* No internal symbols read? Skip this BFD. */
4442 if (isymbuf == NULL)
4443 return;
4444
4445 for (i = 0; i < localsyms; i++)
4446 {
4447 Elf_Internal_Sym *isym = &isymbuf[i];
4448 asection *sec = bfd_section_from_elf_index (abfd, isym->st_shndx);
4449 const char *name;
4450
4451 if (sec != NULL && ELF_ST_BIND (isym->st_info) == STB_LOCAL)
4452 {
4453 name = bfd_elf_string_from_elf_section (abfd,
4454 hdr->sh_link,
4455 isym->st_name);
4456
4457 if (bfd_is_aarch64_special_symbol_name
4458 (name, BFD_AARCH64_SPECIAL_SYM_TYPE_MAP))
cec5225b 4459 elfNN_aarch64_section_map_add (sec, name[1], isym->st_value);
a06ea964
NC		 4460 }
4461 }
4462}
4463
4464/* Set option values needed during linking. */
4465void
cec5225b 4466bfd_elfNN_aarch64_set_options (struct bfd *output_bfd,
a06ea964
NC		 4467 struct bfd_link_info *link_info,
4468 int no_enum_warn,
68fcca92 4469 int no_wchar_warn, int pic_veneer,
4106101c 4470 int fix_erratum_835769,
1f56df9d
JW		 4471 int fix_erratum_843419,
4472 int no_apply_dynamic_relocs)
a06ea964 4473{
cec5225b 4474 struct elf_aarch64_link_hash_table *globals;
a06ea964 4475
cec5225b 4476 globals = elf_aarch64_hash_table (link_info);
a06ea964 4477 globals->pic_veneer = pic_veneer;
68fcca92 4478 globals->fix_erratum_835769 = fix_erratum_835769;
4106101c
MS		 4479 globals->fix_erratum_843419 = fix_erratum_843419;
4480 globals->fix_erratum_843419_adr = TRUE;
1f56df9d 4481 globals->no_apply_dynamic_relocs = no_apply_dynamic_relocs;
a06ea964
NC		 4482
4483 BFD_ASSERT (is_aarch64_elf (output_bfd));
4484 elf_aarch64_tdata (output_bfd)->no_enum_size_warning = no_enum_warn;
4485 elf_aarch64_tdata (output_bfd)->no_wchar_size_warning = no_wchar_warn;
4486}
4487
a06ea964
NC		 4488static bfd_vma
4489aarch64_calculate_got_entry_vma (struct elf_link_hash_entry *h,
cec5225b 4490 struct elf_aarch64_link_hash_table
a06ea964
NC		 4491 *globals, struct bfd_link_info *info,
4492 bfd_vma value, bfd *output_bfd,
4493 bfd_boolean *unresolved_reloc_p)
4494{
4495 bfd_vma off = (bfd_vma) - 1;
4496 asection *basegot = globals->root.sgot;
4497 bfd_boolean dyn = globals->root.dynamic_sections_created;
4498
4499 if (h != NULL)
4500 {
a6bb11b2 4501 BFD_ASSERT (basegot != NULL);
a06ea964
NC		 4502 off = h->got.offset;
4503 BFD_ASSERT (off != (bfd_vma) - 1);
0e1862bb
L		 4504 if (!WILL_CALL_FINISH_DYNAMIC_SYMBOL (dyn, bfd_link_pic (info), h)
4505 || (bfd_link_pic (info)
a06ea964
NC		 4506 && SYMBOL_REFERENCES_LOCAL (info, h))
4507 || (ELF_ST_VISIBILITY (h->other)
4508 && h->root.type == bfd_link_hash_undefweak))
4509 {
4510 /* This is actually a static link, or it is a -Bsymbolic link
4511 and the symbol is defined locally. We must initialize this
4512 entry in the global offset table. Since the offset must
a6bb11b2
YZ		 4513 always be a multiple of 8 (4 in the case of ILP32), we use
4514 the least significant bit to record whether we have
4515 initialized it already.
a06ea964
NC		 4516 When doing a dynamic link, we create a .rel(a).got relocation
4517 entry to initialize the value. This is done in the
4518 finish_dynamic_symbol routine. */
4519 if ((off & 1) != 0)
4520 off &= ~1;
4521 else
4522 {
cec5225b 4523 bfd_put_NN (output_bfd, value, basegot->contents + off);
a06ea964
NC		 4524 h->got.offset |= 1;
4525 }
4526 }
4527 else
4528 *unresolved_reloc_p = FALSE;
4529
4530 off = off + basegot->output_section->vma + basegot->output_offset;
4531 }
4532
4533 return off;
4534}
4535
4536/* Change R_TYPE to a more efficient access model where possible,
4537 return the new reloc type. */
4538
a6bb11b2
YZ		 4539static bfd_reloc_code_real_type
4540aarch64_tls_transition_without_check (bfd_reloc_code_real_type r_type,
a06ea964
NC		 4541 struct elf_link_hash_entry *h)
4542{
4543 bfd_boolean is_local = h == NULL;
a6bb11b2 4544
a06ea964
NC		 4545 switch (r_type)
4546 {
a6bb11b2 4547 case BFD_RELOC_AARCH64_TLSDESC_ADR_PAGE21:
ce336788 4548 case BFD_RELOC_AARCH64_TLSGD_ADR_PAGE21:
a6bb11b2
YZ		 4549 return (is_local
4550 ? BFD_RELOC_AARCH64_TLSLE_MOVW_TPREL_G1
4551 : BFD_RELOC_AARCH64_TLSIE_ADR_GOTTPREL_PAGE21);
4552
389b8029
MS		 4553 case BFD_RELOC_AARCH64_TLSDESC_ADR_PREL21:
4554 return (is_local
4555 ? BFD_RELOC_AARCH64_TLSLE_MOVW_TPREL_G0_NC
4556 : r_type);
4557
1ada945d
MS		 4558 case BFD_RELOC_AARCH64_TLSDESC_LD_PREL19:
4559 return (is_local
4560 ? BFD_RELOC_AARCH64_TLSLE_MOVW_TPREL_G1
4561 : BFD_RELOC_AARCH64_TLSIE_LD_GOTTPREL_PREL19);
4562
0484b454
RL		 4563 case BFD_RELOC_AARCH64_TLSDESC_LDR:
4564 return (is_local
4565 ? BFD_RELOC_AARCH64_TLSLE_MOVW_TPREL_G0_NC
4566 : BFD_RELOC_AARCH64_NONE);
4567
4568 case BFD_RELOC_AARCH64_TLSDESC_OFF_G0_NC:
4569 return (is_local
4570 ? BFD_RELOC_AARCH64_TLSLE_MOVW_TPREL_G1_NC
4571 : BFD_RELOC_AARCH64_TLSIE_MOVW_GOTTPREL_G0_NC);
4572
4573 case BFD_RELOC_AARCH64_TLSDESC_OFF_G1:
4574 return (is_local
4575 ? BFD_RELOC_AARCH64_TLSLE_MOVW_TPREL_G2
4576 : BFD_RELOC_AARCH64_TLSIE_MOVW_GOTTPREL_G1);
4577
a6bb11b2 4578 case BFD_RELOC_AARCH64_TLSDESC_LDNN_LO12_NC:
ce336788 4579 case BFD_RELOC_AARCH64_TLSGD_ADD_LO12_NC:
a6bb11b2
YZ		 4580 return (is_local
4581 ? BFD_RELOC_AARCH64_TLSLE_MOVW_TPREL_G0_NC
4582 : BFD_RELOC_AARCH64_TLSIE_LDNN_GOTTPREL_LO12_NC);
4583
4584 case BFD_RELOC_AARCH64_TLSIE_ADR_GOTTPREL_PAGE21:
4585 return is_local ? BFD_RELOC_AARCH64_TLSLE_MOVW_TPREL_G1 : r_type;
4586
4587 case BFD_RELOC_AARCH64_TLSIE_LDNN_GOTTPREL_LO12_NC:
4588 return is_local ? BFD_RELOC_AARCH64_TLSLE_MOVW_TPREL_G0_NC : r_type;
4589
043bf05a
MS		 4590 case BFD_RELOC_AARCH64_TLSIE_LD_GOTTPREL_PREL19:
4591 return r_type;
4592
3c12b054
MS		 4593 case BFD_RELOC_AARCH64_TLSGD_ADR_PREL21:
4594 return (is_local
4595 ? BFD_RELOC_AARCH64_TLSLE_ADD_TPREL_HI12
4596 : BFD_RELOC_AARCH64_TLSIE_LD_GOTTPREL_PREL19);
4597
0484b454 4598 case BFD_RELOC_AARCH64_TLSDESC_ADD:
f955cccf 4599 case BFD_RELOC_AARCH64_TLSDESC_ADD_LO12:
a6bb11b2 4600 case BFD_RELOC_AARCH64_TLSDESC_CALL:
a06ea964 4601 /* Instructions with these relocations will become NOPs. */
a6bb11b2
YZ		 4602 return BFD_RELOC_AARCH64_NONE;
4603
259364ad
JW		 4604 case BFD_RELOC_AARCH64_TLSLD_ADD_LO12_NC:
4605 case BFD_RELOC_AARCH64_TLSLD_ADR_PAGE21:
4606 case BFD_RELOC_AARCH64_TLSLD_ADR_PREL21:
4607 return is_local ? BFD_RELOC_AARCH64_NONE : r_type;
4608
ac734732
RL		 4609#if ARCH_SIZE == 64
4610 case BFD_RELOC_AARCH64_TLSGD_MOVW_G0_NC:
4611 return is_local
4612 ? BFD_RELOC_AARCH64_TLSLE_MOVW_TPREL_G1_NC
4613 : BFD_RELOC_AARCH64_TLSIE_MOVW_GOTTPREL_G0_NC;
4614
4615 case BFD_RELOC_AARCH64_TLSGD_MOVW_G1:
4616 return is_local
4617 ? BFD_RELOC_AARCH64_TLSLE_MOVW_TPREL_G2
4618 : BFD_RELOC_AARCH64_TLSIE_MOVW_GOTTPREL_G1;
4619#endif
4620
a6bb11b2
YZ		 4621 default:
4622 break;
a06ea964
NC		 4623 }
4624
4625 return r_type;
4626}
4627
4628static unsigned int
a6bb11b2 4629aarch64_reloc_got_type (bfd_reloc_code_real_type r_type)
a06ea964
NC		 4630{
4631 switch (r_type)
4632 {
a6bb11b2
YZ		 4633 case BFD_RELOC_AARCH64_ADR_GOT_PAGE:
4634 case BFD_RELOC_AARCH64_GOT_LD_PREL19:
7018c030 4635 case BFD_RELOC_AARCH64_LD32_GOTPAGE_LO14:
ce336788 4636 case BFD_RELOC_AARCH64_LD32_GOT_LO12_NC:
a2e1db00 4637 case BFD_RELOC_AARCH64_LD64_GOTOFF_LO15:
99ad26cb 4638 case BFD_RELOC_AARCH64_LD64_GOTPAGE_LO15:
ce336788 4639 case BFD_RELOC_AARCH64_LD64_GOT_LO12_NC:
dc8008f5 4640 case BFD_RELOC_AARCH64_MOVW_GOTOFF_G0_NC:
74a1bfe1 4641 case BFD_RELOC_AARCH64_MOVW_GOTOFF_G1:
a06ea964
NC		 4642 return GOT_NORMAL;
4643
ce336788 4644 case BFD_RELOC_AARCH64_TLSGD_ADD_LO12_NC:
a6bb11b2 4645 case BFD_RELOC_AARCH64_TLSGD_ADR_PAGE21:
3c12b054 4646 case BFD_RELOC_AARCH64_TLSGD_ADR_PREL21:
7ba7cfe4 4647 case BFD_RELOC_AARCH64_TLSGD_MOVW_G0_NC:
94facae3 4648 case BFD_RELOC_AARCH64_TLSGD_MOVW_G1:
73f925cc 4649 case BFD_RELOC_AARCH64_TLSLD_ADD_LO12_NC:
f69e4920 4650 case BFD_RELOC_AARCH64_TLSLD_ADR_PAGE21:
77a69ff8 4651 case BFD_RELOC_AARCH64_TLSLD_ADR_PREL21:
a06ea964
NC		 4652 return GOT_TLS_GD;
4653
0484b454 4654 case BFD_RELOC_AARCH64_TLSDESC_ADD:
f955cccf 4655 case BFD_RELOC_AARCH64_TLSDESC_ADD_LO12:
a6bb11b2 4656 case BFD_RELOC_AARCH64_TLSDESC_ADR_PAGE21:
389b8029 4657 case BFD_RELOC_AARCH64_TLSDESC_ADR_PREL21:
a6bb11b2 4658 case BFD_RELOC_AARCH64_TLSDESC_CALL:
a6bb11b2 4659 case BFD_RELOC_AARCH64_TLSDESC_LD32_LO12_NC:
f955cccf 4660 case BFD_RELOC_AARCH64_TLSDESC_LD64_LO12:
1ada945d 4661 case BFD_RELOC_AARCH64_TLSDESC_LD_PREL19:
0484b454
RL		 4662 case BFD_RELOC_AARCH64_TLSDESC_LDR:
4663 case BFD_RELOC_AARCH64_TLSDESC_OFF_G0_NC:
4664 case BFD_RELOC_AARCH64_TLSDESC_OFF_G1:
a06ea964
NC		 4665 return GOT_TLSDESC_GD;
4666
a6bb11b2 4667 case BFD_RELOC_AARCH64_TLSIE_ADR_GOTTPREL_PAGE21:
a6bb11b2 4668 case BFD_RELOC_AARCH64_TLSIE_LD32_GOTTPREL_LO12_NC:
ce336788 4669 case BFD_RELOC_AARCH64_TLSIE_LD64_GOTTPREL_LO12_NC:
043bf05a 4670 case BFD_RELOC_AARCH64_TLSIE_LD_GOTTPREL_PREL19:
3b957e5b
RL		 4671 case BFD_RELOC_AARCH64_TLSIE_MOVW_GOTTPREL_G0_NC:
4672 case BFD_RELOC_AARCH64_TLSIE_MOVW_GOTTPREL_G1:
a06ea964
NC		 4673 return GOT_TLS_IE;
4674
a6bb11b2
YZ		 4675 default:
4676 break;
a06ea964
NC		 4677 }
4678 return GOT_UNKNOWN;
4679}
4680
4681static bfd_boolean
4682aarch64_can_relax_tls (bfd *input_bfd,
4683 struct bfd_link_info *info,
a6bb11b2 4684 bfd_reloc_code_real_type r_type,
a06ea964
NC		 4685 struct elf_link_hash_entry *h,
4686 unsigned long r_symndx)
4687{
4688 unsigned int symbol_got_type;
4689 unsigned int reloc_got_type;
4690
9331eea1 4691 if (! IS_AARCH64_TLS_RELAX_RELOC (r_type))
a06ea964
NC		 4692 return FALSE;
4693
cec5225b 4694 symbol_got_type = elfNN_aarch64_symbol_got_type (h, input_bfd, r_symndx);
a06ea964
NC		 4695 reloc_got_type = aarch64_reloc_got_type (r_type);
4696
4697 if (symbol_got_type == GOT_TLS_IE && GOT_TLS_GD_ANY_P (reloc_got_type))
4698 return TRUE;
4699
6dda7875 4700 if (!bfd_link_executable (info))
a06ea964
NC		 4701 return FALSE;
4702
4703 if (h && h->root.type == bfd_link_hash_undefweak)
4704 return FALSE;
4705
4706 return TRUE;
4707}
4708
a6bb11b2
YZ		 4709/* Given the relocation code R_TYPE, return the relaxed bfd reloc
4710 enumerator. */
4711
4712static bfd_reloc_code_real_type
a06ea964
NC		 4713aarch64_tls_transition (bfd *input_bfd,
4714 struct bfd_link_info *info,
4715 unsigned int r_type,
4716 struct elf_link_hash_entry *h,
4717 unsigned long r_symndx)
4718{
a6bb11b2 4719 bfd_reloc_code_real_type bfd_r_type
0aa13fee 4720 = elfNN_aarch64_bfd_reloc_from_type (input_bfd, r_type);
a06ea964 4721
a6bb11b2
YZ		 4722 if (! aarch64_can_relax_tls (input_bfd, info, bfd_r_type, h, r_symndx))
4723 return bfd_r_type;
4724
4725 return aarch64_tls_transition_without_check (bfd_r_type, h);
a06ea964
NC		 4726}
4727
4728/* Return the base VMA address which should be subtracted from real addresses
a6bb11b2 4729 when resolving R_AARCH64_TLS_DTPREL relocation. */
a06ea964
NC		 4730
4731static bfd_vma
4732dtpoff_base (struct bfd_link_info *info)
4733{
4734 /* If tls_sec is NULL, we should have signalled an error already. */
4735 BFD_ASSERT (elf_hash_table (info)->tls_sec != NULL);
4736 return elf_hash_table (info)->tls_sec->vma;
4737}
4738
a06ea964
NC		 4739/* Return the base VMA address which should be subtracted from real addresses
4740 when resolving R_AARCH64_TLS_GOTTPREL64 relocations. */
4741
4742static bfd_vma
4743tpoff_base (struct bfd_link_info *info)
4744{
4745 struct elf_link_hash_table *htab = elf_hash_table (info);
4746
4747 /* If tls_sec is NULL, we should have signalled an error already. */
ac21917f 4748 BFD_ASSERT (htab->tls_sec != NULL);
a06ea964
NC		 4749
4750 bfd_vma base = align_power ((bfd_vma) TCB_SIZE,
4751 htab->tls_sec->alignment_power);
4752 return htab->tls_sec->vma - base;
4753}
4754
4755static bfd_vma *
4756symbol_got_offset_ref (bfd *input_bfd, struct elf_link_hash_entry *h,
4757 unsigned long r_symndx)
4758{
4759 /* Calculate the address of the GOT entry for symbol
4760 referred to in h. */
4761 if (h != NULL)
4762 return &h->got.offset;
4763 else
4764 {
4765 /* local symbol */
4766 struct elf_aarch64_local_symbol *l;
4767
cec5225b 4768 l = elf_aarch64_locals (input_bfd);
a06ea964
NC		 4769 return &l[r_symndx].got_offset;
4770 }
4771}
4772
4773static void
4774symbol_got_offset_mark (bfd *input_bfd, struct elf_link_hash_entry *h,
4775 unsigned long r_symndx)
4776{
4777 bfd_vma *p;
4778 p = symbol_got_offset_ref (input_bfd, h, r_symndx);
4779 *p |= 1;
4780}
4781
4782static int
4783symbol_got_offset_mark_p (bfd *input_bfd, struct elf_link_hash_entry *h,
4784 unsigned long r_symndx)
4785{
4786 bfd_vma value;
4787 value = * symbol_got_offset_ref (input_bfd, h, r_symndx);
4788 return value & 1;
4789}
4790
4791static bfd_vma
4792symbol_got_offset (bfd *input_bfd, struct elf_link_hash_entry *h,
4793 unsigned long r_symndx)
4794{
4795 bfd_vma value;
4796 value = * symbol_got_offset_ref (input_bfd, h, r_symndx);
4797 value &= ~1;
4798 return value;
4799}
4800
4801static bfd_vma *
4802symbol_tlsdesc_got_offset_ref (bfd *input_bfd, struct elf_link_hash_entry *h,
4803 unsigned long r_symndx)
4804{
4805 /* Calculate the address of the GOT entry for symbol
4806 referred to in h. */
4807 if (h != NULL)
4808 {
cec5225b
YZ		 4809 struct elf_aarch64_link_hash_entry *eh;
4810 eh = (struct elf_aarch64_link_hash_entry *) h;
a06ea964
NC		 4811 return &eh->tlsdesc_got_jump_table_offset;
4812 }
4813 else
4814 {
4815 /* local symbol */
4816 struct elf_aarch64_local_symbol *l;
4817
cec5225b 4818 l = elf_aarch64_locals (input_bfd);
a06ea964
NC		 4819 return &l[r_symndx].tlsdesc_got_jump_table_offset;
4820 }
4821}
4822
4823static void
4824symbol_tlsdesc_got_offset_mark (bfd *input_bfd, struct elf_link_hash_entry *h,
4825 unsigned long r_symndx)
4826{
4827 bfd_vma *p;
4828 p = symbol_tlsdesc_got_offset_ref (input_bfd, h, r_symndx);
4829 *p |= 1;
4830}
4831
4832static int
4833symbol_tlsdesc_got_offset_mark_p (bfd *input_bfd,
4834 struct elf_link_hash_entry *h,
4835 unsigned long r_symndx)
4836{
4837 bfd_vma value;
4838 value = * symbol_tlsdesc_got_offset_ref (input_bfd, h, r_symndx);
4839 return value & 1;
4840}
4841
4842static bfd_vma
4843symbol_tlsdesc_got_offset (bfd *input_bfd, struct elf_link_hash_entry *h,
4844 unsigned long r_symndx)
4845{
4846 bfd_vma value;
4847 value = * symbol_tlsdesc_got_offset_ref (input_bfd, h, r_symndx);
4848 value &= ~1;
4849 return value;
4850}
4851
68fcca92
JW		 4852/* Data for make_branch_to_erratum_835769_stub(). */
4853
4854struct erratum_835769_branch_to_stub_data
4855{
4106101c 4856 struct bfd_link_info *info;
68fcca92
JW		 4857 asection *output_section;
4858 bfd_byte *contents;
4859};
4860
4861/* Helper to insert branches to erratum 835769 stubs in the right
4862 places for a particular section. */
4863
4864static bfd_boolean
4865make_branch_to_erratum_835769_stub (struct bfd_hash_entry *gen_entry,
4866 void *in_arg)
4867{
4868 struct elf_aarch64_stub_hash_entry *stub_entry;
4869 struct erratum_835769_branch_to_stub_data *data;
4870 bfd_byte *contents;
4871 unsigned long branch_insn = 0;
4872 bfd_vma veneered_insn_loc, veneer_entry_loc;
4873 bfd_signed_vma branch_offset;
4874 unsigned int target;
4875 bfd *abfd;
4876
4877 stub_entry = (struct elf_aarch64_stub_hash_entry *) gen_entry;
4878 data = (struct erratum_835769_branch_to_stub_data *) in_arg;
4879
4880 if (stub_entry->target_section != data->output_section
4881 || stub_entry->stub_type != aarch64_stub_erratum_835769_veneer)
4882 return TRUE;
4883
4884 contents = data->contents;
4885 veneered_insn_loc = stub_entry->target_section->output_section->vma
4886 + stub_entry->target_section->output_offset
4887 + stub_entry->target_value;
4888 veneer_entry_loc = stub_entry->stub_sec->output_section->vma
4889 + stub_entry->stub_sec->output_offset
4890 + stub_entry->stub_offset;
4891 branch_offset = veneer_entry_loc - veneered_insn_loc;
4892
4893 abfd = stub_entry->target_section->owner;
4894 if (!aarch64_valid_branch_p (veneer_entry_loc, veneered_insn_loc))
4eca0228 4895 _bfd_error_handler
90b6238f 4896 (_("%pB: error: erratum 835769 stub out "
4eca0228 4897 "of range (input file too large)"), abfd);
68fcca92
JW		 4898
4899 target = stub_entry->target_value;
4900 branch_insn = 0x14000000;
4901 branch_offset >>= 2;
4902 branch_offset &= 0x3ffffff;
4903 branch_insn |= branch_offset;
4904 bfd_putl32 (branch_insn, &contents[target]);
4905
4906 return TRUE;
4907}
4908
4106101c
MS		 4909
4910static bfd_boolean
4911_bfd_aarch64_erratum_843419_branch_to_stub (struct bfd_hash_entry *gen_entry,
4912 void *in_arg)
4913{
4914 struct elf_aarch64_stub_hash_entry *stub_entry
4915 = (struct elf_aarch64_stub_hash_entry *) gen_entry;
4916 struct erratum_835769_branch_to_stub_data *data
4917 = (struct erratum_835769_branch_to_stub_data *) in_arg;
4918 struct bfd_link_info *info;
4919 struct elf_aarch64_link_hash_table *htab;
4920 bfd_byte *contents;
4921 asection *section;
4922 bfd *abfd;
4923 bfd_vma place;
4924 uint32_t insn;
4925
4926 info = data->info;
4927 contents = data->contents;
4928 section = data->output_section;
4929
4930 htab = elf_aarch64_hash_table (info);
4931
4932 if (stub_entry->target_section != section
4933 || stub_entry->stub_type != aarch64_stub_erratum_843419_veneer)
4934 return TRUE;
4935
4936 insn = bfd_getl32 (contents + stub_entry->target_value);
4937 bfd_putl32 (insn,
4938 stub_entry->stub_sec->contents + stub_entry->stub_offset);
4939
4940 place = (section->output_section->vma + section->output_offset
4941 + stub_entry->adrp_offset);
4942 insn = bfd_getl32 (contents + stub_entry->adrp_offset);
4943
4944 if ((insn & AARCH64_ADRP_OP_MASK) != AARCH64_ADRP_OP)
4945 abort ();
4946
4947 bfd_signed_vma imm =
4948 (_bfd_aarch64_sign_extend
4949 ((bfd_vma) _bfd_aarch64_decode_adrp_imm (insn) << 12, 33)
4950 - (place & 0xfff));
4951
4952 if (htab->fix_erratum_843419_adr
4953 && (imm >= AARCH64_MIN_ADRP_IMM && imm <= AARCH64_MAX_ADRP_IMM))
4954 {
4955 insn = (_bfd_aarch64_reencode_adr_imm (AARCH64_ADR_OP, imm)
4956 | AARCH64_RT (insn));
4957 bfd_putl32 (insn, contents + stub_entry->adrp_offset);
4958 }
4959 else
4960 {
4961 bfd_vma veneered_insn_loc;
4962 bfd_vma veneer_entry_loc;
4963 bfd_signed_vma branch_offset;
4964 uint32_t branch_insn;
4965
4966 veneered_insn_loc = stub_entry->target_section->output_section->vma
4967 + stub_entry->target_section->output_offset
4968 + stub_entry->target_value;
4969 veneer_entry_loc = stub_entry->stub_sec->output_section->vma
4970 + stub_entry->stub_sec->output_offset
4971 + stub_entry->stub_offset;
4972 branch_offset = veneer_entry_loc - veneered_insn_loc;
4973
4974 abfd = stub_entry->target_section->owner;
4975 if (!aarch64_valid_branch_p (veneer_entry_loc, veneered_insn_loc))
4eca0228 4976 _bfd_error_handler
90b6238f 4977 (_("%pB: error: erratum 843419 stub out "
4106101c
MS		 4978 "of range (input file too large)"), abfd);
4979
4980 branch_insn = 0x14000000;
4981 branch_offset >>= 2;
4982 branch_offset &= 0x3ffffff;
4983 branch_insn |= branch_offset;
4984 bfd_putl32 (branch_insn, contents + stub_entry->target_value);
4985 }
4986 return TRUE;
4987}
4988
4989
68fcca92
JW		 4990static bfd_boolean
4991elfNN_aarch64_write_section (bfd *output_bfd ATTRIBUTE_UNUSED,
4992 struct bfd_link_info *link_info,
4993 asection *sec,
4994 bfd_byte *contents)
4995
4996{
4997 struct elf_aarch64_link_hash_table *globals =
f872121a 4998 elf_aarch64_hash_table (link_info);
68fcca92
JW		 4999
5000 if (globals == NULL)
5001 return FALSE;
5002
5003 /* Fix code to point to erratum 835769 stubs. */
5004 if (globals->fix_erratum_835769)
5005 {
5006 struct erratum_835769_branch_to_stub_data data;
5007
4106101c 5008 data.info = link_info;
68fcca92
JW		 5009 data.output_section = sec;
5010 data.contents = contents;
5011 bfd_hash_traverse (&globals->stub_hash_table,
5012 make_branch_to_erratum_835769_stub, &data);
5013 }
5014
4106101c
MS		 5015 if (globals->fix_erratum_843419)
5016 {
5017 struct erratum_835769_branch_to_stub_data data;
5018
5019 data.info = link_info;
5020 data.output_section = sec;
5021 data.contents = contents;
5022 bfd_hash_traverse (&globals->stub_hash_table,
5023 _bfd_aarch64_erratum_843419_branch_to_stub, &data);
5024 }
5025
68fcca92
JW		 5026 return FALSE;
5027}
5028
2aff25ba
JW		 5029/* Return TRUE if RELOC is a relocation against the base of GOT table. */
5030
5031static bfd_boolean
5032aarch64_relocation_aginst_gp_p (bfd_reloc_code_real_type reloc)
5033{
5034 return (reloc == BFD_RELOC_AARCH64_LD32_GOTPAGE_LO14
5035 || reloc == BFD_RELOC_AARCH64_LD64_GOTPAGE_LO15
5036 || reloc == BFD_RELOC_AARCH64_LD64_GOTOFF_LO15
5037 || reloc == BFD_RELOC_AARCH64_MOVW_GOTOFF_G0_NC
5038 || reloc == BFD_RELOC_AARCH64_MOVW_GOTOFF_G1);
5039}
5040
4e7fbb34
JW		 5041/* Perform a relocation as part of a final link. The input relocation type
5042 should be TLS relaxed. */
5043
a06ea964 5044static bfd_reloc_status_type
cec5225b 5045elfNN_aarch64_final_link_relocate (reloc_howto_type *howto,
a06ea964
NC		 5046 bfd *input_bfd,
5047 bfd *output_bfd,
5048 asection *input_section,
5049 bfd_byte *contents,
5050 Elf_Internal_Rela *rel,
5051 bfd_vma value,
5052 struct bfd_link_info *info,
5053 asection *sym_sec,
5054 struct elf_link_hash_entry *h,
5055 bfd_boolean *unresolved_reloc_p,
5056 bfd_boolean save_addend,
1419bbe5
WN		 5057 bfd_vma *saved_addend,
5058 Elf_Internal_Sym *sym)
a06ea964 5059{
1419bbe5 5060 Elf_Internal_Shdr *symtab_hdr;
a06ea964 5061 unsigned int r_type = howto->type;
a6bb11b2
YZ		 5062 bfd_reloc_code_real_type bfd_r_type
5063 = elfNN_aarch64_bfd_reloc_from_howto (howto);
a06ea964
NC		 5064 unsigned long r_symndx;
5065 bfd_byte *hit_data = contents + rel->r_offset;
96d01d93 5066 bfd_vma place, off, got_entry_addr = 0;
a06ea964 5067 bfd_signed_vma signed_addend;
cec5225b 5068 struct elf_aarch64_link_hash_table *globals;
a06ea964 5069 bfd_boolean weak_undef_p;
ff07562f 5070 bfd_boolean relative_reloc;
b53b1bed 5071 asection *base_got;
ff07562f 5072 bfd_vma orig_value = value;
ddb7fd0f 5073 bfd_boolean resolved_to_zero;
a06ea964 5074
cec5225b 5075 globals = elf_aarch64_hash_table (info);
a06ea964 5076
1419bbe5
WN		 5077 symtab_hdr = &elf_symtab_hdr (input_bfd);
5078
a06ea964
NC		 5079 BFD_ASSERT (is_aarch64_elf (input_bfd));
5080
cec5225b 5081 r_symndx = ELFNN_R_SYM (rel->r_info);
a06ea964 5082
a06ea964
NC		 5083 place = input_section->output_section->vma
5084 + input_section->output_offset + rel->r_offset;
5085
5086 /* Get addend, accumulating the addend for consecutive relocs
5087 which refer to the same offset. */
5088 signed_addend = saved_addend ? *saved_addend : 0;
5089 signed_addend += rel->r_addend;
5090
5091 weak_undef_p = (h ? h->root.type == bfd_link_hash_undefweak
5092 : bfd_is_und_section (sym_sec));
a6bb11b2 5093
1419bbe5
WN		 5094 /* Since STT_GNU_IFUNC symbol must go through PLT, we handle
5095 it here if it is defined in a non-shared object. */
5096 if (h != NULL
5097 && h->type == STT_GNU_IFUNC
5098 && h->def_regular)
5099 {
5100 asection *plt;
5101 const char *name;
99ad26cb 5102 bfd_vma addend = 0;
1419bbe5 5103
545bc2b3
SN		 5104 if ((input_section->flags & SEC_ALLOC) == 0)
5105 {
5106 /* Dynamic relocs are not propagated for SEC_DEBUGGING
5107 sections because such sections are not SEC_ALLOC and
5108 thus ld.so will not process them. */
5109 if ((input_section->flags & SEC_DEBUGGING) != 0)
5110 return bfd_reloc_ok;
5111
5112 if (h->root.root.string)
5113 name = h->root.root.string;
5114 else
5115 name = bfd_elf_sym_name (input_bfd, symtab_hdr, sym, NULL);
5116 _bfd_error_handler
5117 /* xgettext:c-format */
2dcf00ce
AM		 5118 (_("%pB(%pA+%#" PRIx64 "): "
5119 "unresolvable %s relocation against symbol `%s'"),
5120 input_bfd, input_section, (uint64_t) rel->r_offset,
5121 howto->name, name);
545bc2b3 5122 bfd_set_error (bfd_error_bad_value);
1d75a8e2 5123 return bfd_reloc_notsupported;
545bc2b3
SN		 5124 }
5125 else if (h->plt.offset == (bfd_vma) -1)
5126 goto bad_ifunc_reloc;
1419bbe5
WN		 5127
5128 /* STT_GNU_IFUNC symbol must go through PLT. */
5129 plt = globals->root.splt ? globals->root.splt : globals->root.iplt;
5130 value = (plt->output_section->vma + plt->output_offset + h->plt.offset);
5131
5132 switch (bfd_r_type)
5133 {
5134 default:
545bc2b3 5135bad_ifunc_reloc:
1419bbe5
WN		 5136 if (h->root.root.string)
5137 name = h->root.root.string;
5138 else
5139 name = bfd_elf_sym_name (input_bfd, symtab_hdr, sym,
5140 NULL);
4eca0228 5141 _bfd_error_handler
695344c0 5142 /* xgettext:c-format */
871b3ab2 5143 (_("%pB: relocation %s against STT_GNU_IFUNC "
1419bbe5
WN		 5144 "symbol `%s' isn't handled by %s"), input_bfd,
5145 howto->name, name, __FUNCTION__);
5146 bfd_set_error (bfd_error_bad_value);
1d75a8e2 5147 return bfd_reloc_notsupported;
1419bbe5
WN		 5148
5149 case BFD_RELOC_AARCH64_NN:
5150 if (rel->r_addend != 0)
5151 {
5152 if (h->root.root.string)
5153 name = h->root.root.string;
5154 else
5155 name = bfd_elf_sym_name (input_bfd, symtab_hdr,
5156 sym, NULL);
4eca0228 5157 _bfd_error_handler
695344c0 5158 /* xgettext:c-format */
871b3ab2 5159 (_("%pB: relocation %s against STT_GNU_IFUNC "
2dcf00ce
AM		 5160 "symbol `%s' has non-zero addend: %" PRId64),
5161 input_bfd, howto->name, name, (int64_t) rel->r_addend);
1419bbe5 5162 bfd_set_error (bfd_error_bad_value);
1d75a8e2 5163 return bfd_reloc_notsupported;
1419bbe5
WN		 5164 }
5165
5166 /* Generate dynamic relocation only when there is a
5167 non-GOT reference in a shared object. */
0e1862bb 5168 if (bfd_link_pic (info) && h->non_got_ref)
1419bbe5
WN		 5169 {
5170 Elf_Internal_Rela outrel;
5171 asection *sreloc;
5172
5173 /* Need a dynamic relocation to get the real function
5174 address. */
5175 outrel.r_offset = _bfd_elf_section_offset (output_bfd,
5176 info,
5177 input_section,
5178 rel->r_offset);
5179 if (outrel.r_offset == (bfd_vma) -1
5180 || outrel.r_offset == (bfd_vma) -2)
5181 abort ();
5182
5183 outrel.r_offset += (input_section->output_section->vma
5184 + input_section->output_offset);
5185
5186 if (h->dynindx == -1
5187 || h->forced_local
0e1862bb 5188 || bfd_link_executable (info))
1419bbe5
WN		 5189 {
5190 /* This symbol is resolved locally. */
5191 outrel.r_info = ELFNN_R_INFO (0, AARCH64_R (IRELATIVE));
5192 outrel.r_addend = (h->root.u.def.value
5193 + h->root.u.def.section->output_section->vma
5194 + h->root.u.def.section->output_offset);
5195 }
5196 else
5197 {
5198 outrel.r_info = ELFNN_R_INFO (h->dynindx, r_type);
5199 outrel.r_addend = 0;
5200 }
5201
5202 sreloc = globals->root.irelifunc;
5203 elf_append_rela (output_bfd, sreloc, &outrel);
5204
5205 /* If this reloc is against an external symbol, we
5206 do not want to fiddle with the addend. Otherwise,
5207 we need to include the symbol value so that it
5208 becomes an addend for the dynamic reloc. For an
5209 internal symbol, we have updated addend. */
5210 return bfd_reloc_ok;
5211 }
5212 /* FALLTHROUGH */
1419bbe5 5213 case BFD_RELOC_AARCH64_CALL26:
ce336788 5214 case BFD_RELOC_AARCH64_JUMP26:
1419bbe5
WN		 5215 value = _bfd_aarch64_elf_resolve_relocation (bfd_r_type, place, value,
5216 signed_addend,
5217 weak_undef_p);
5218 return _bfd_aarch64_elf_put_addend (input_bfd, hit_data, bfd_r_type,
5219 howto, value);
1419bbe5
WN		 5220 case BFD_RELOC_AARCH64_ADR_GOT_PAGE:
5221 case BFD_RELOC_AARCH64_GOT_LD_PREL19:
7018c030 5222 case BFD_RELOC_AARCH64_LD32_GOTPAGE_LO14:
ce336788 5223 case BFD_RELOC_AARCH64_LD32_GOT_LO12_NC:
99ad26cb 5224 case BFD_RELOC_AARCH64_LD64_GOTPAGE_LO15:
dc8008f5 5225 case BFD_RELOC_AARCH64_MOVW_GOTOFF_G0_NC:
74a1bfe1 5226 case BFD_RELOC_AARCH64_MOVW_GOTOFF_G1:
a2e1db00 5227 case BFD_RELOC_AARCH64_LD64_GOTOFF_LO15:
ce336788 5228 case BFD_RELOC_AARCH64_LD64_GOT_LO12_NC:
1419bbe5
WN		 5229 base_got = globals->root.sgot;
5230 off = h->got.offset;
5231
5232 if (base_got == NULL)
5233 abort ();
5234
5235 if (off == (bfd_vma) -1)
5236 {
5237 bfd_vma plt_index;
5238
5239 /* We can't use h->got.offset here to save state, or
5240 even just remember the offset, as finish_dynamic_symbol
5241 would use that as offset into .got. */
5242
5243 if (globals->root.splt != NULL)
5244 {
b1ee0cc4
WN		 5245 plt_index = ((h->plt.offset - globals->plt_header_size) /
5246 globals->plt_entry_size);
1419bbe5
WN		 5247 off = (plt_index + 3) * GOT_ENTRY_SIZE;
5248 base_got = globals->root.sgotplt;
5249 }
5250 else
5251 {
5252 plt_index = h->plt.offset / globals->plt_entry_size;
5253 off = plt_index * GOT_ENTRY_SIZE;
5254 base_got = globals->root.igotplt;
5255 }
5256
5257 if (h->dynindx == -1
5258 || h->forced_local
5259 || info->symbolic)
5260 {
5261 /* This references the local definition. We must
5262 initialize this entry in the global offset table.
5263 Since the offset must always be a multiple of 8,
5264 we use the least significant bit to record
5265 whether we have initialized it already.
5266
5267 When doing a dynamic link, we create a .rela.got
5268 relocation entry to initialize the value. This
5269 is done in the finish_dynamic_symbol routine. */
5270 if ((off & 1) != 0)
5271 off &= ~1;
5272 else
5273 {
5274 bfd_put_NN (output_bfd, value,
5275 base_got->contents + off);
5276 /* Note that this is harmless as -1 | 1 still is -1. */
5277 h->got.offset |= 1;
5278 }
5279 }
5280 value = (base_got->output_section->vma
5281 + base_got->output_offset + off);
5282 }
5283 else
5284 value = aarch64_calculate_got_entry_vma (h, globals, info,
5285 value, output_bfd,
5286 unresolved_reloc_p);
a0becb89 5287
2aff25ba
JW		 5288 if (aarch64_relocation_aginst_gp_p (bfd_r_type))
5289 addend = (globals->root.sgot->output_section->vma
5290 + globals->root.sgot->output_offset);
a0becb89 5291
1419bbe5 5292 value = _bfd_aarch64_elf_resolve_relocation (bfd_r_type, place, value,
99ad26cb 5293 addend, weak_undef_p);
1419bbe5 5294 return _bfd_aarch64_elf_put_addend (input_bfd, hit_data, bfd_r_type, howto, value);
1419bbe5 5295 case BFD_RELOC_AARCH64_ADD_LO12:
ce336788 5296 case BFD_RELOC_AARCH64_ADR_HI21_PCREL:
1419bbe5
WN		 5297 break;
5298 }
5299 }
5300
ddb7fd0f
L		 5301 resolved_to_zero = (h != NULL
5302 && UNDEFWEAK_NO_DYNAMIC_RELOC (info, h));
5303
a6bb11b2 5304 switch (bfd_r_type)
a06ea964 5305 {
a6bb11b2 5306 case BFD_RELOC_AARCH64_NONE:
0484b454 5307 case BFD_RELOC_AARCH64_TLSDESC_ADD:
a6bb11b2 5308 case BFD_RELOC_AARCH64_TLSDESC_CALL:
0484b454 5309 case BFD_RELOC_AARCH64_TLSDESC_LDR:
a06ea964
NC		 5310 *unresolved_reloc_p = FALSE;
5311 return bfd_reloc_ok;
5312
a6bb11b2 5313 case BFD_RELOC_AARCH64_NN:
a06ea964
NC		 5314
5315 /* When generating a shared object or relocatable executable, these
07d6d2b8
AM		 5316 relocations are copied into the output file to be resolved at
5317 run time. */
6353d82b
JW		 5318 if (((bfd_link_pic (info)
5319 || globals->root.is_relocatable_executable)
5320 && (input_section->flags & SEC_ALLOC)
5321 && (h == NULL
ddb7fd0f
L		 5322 || (ELF_ST_VISIBILITY (h->other) == STV_DEFAULT
5323 && !resolved_to_zero)
6353d82b
JW		 5324 || h->root.type != bfd_link_hash_undefweak))
5325 /* Or we are creating an executable, we may need to keep relocations
5326 for symbols satisfied by a dynamic library if we manage to avoid
5327 copy relocs for the symbol. */
5328 || (ELIMINATE_COPY_RELOCS
5329 && !bfd_link_pic (info)
5330 && h != NULL
5331 && (input_section->flags & SEC_ALLOC)
5332 && h->dynindx != -1
5333 && !h->non_got_ref
5334 && ((h->def_dynamic
5335 && !h->def_regular)
5336 || h->root.type == bfd_link_hash_undefweak
5337 || h->root.type == bfd_link_hash_undefined)))
a06ea964
NC		 5338 {
5339 Elf_Internal_Rela outrel;
5340 bfd_byte *loc;
5341 bfd_boolean skip, relocate;
5342 asection *sreloc;
5343
5344 *unresolved_reloc_p = FALSE;
5345
a06ea964
NC		 5346 skip = FALSE;
5347 relocate = FALSE;
5348
5349 outrel.r_addend = signed_addend;
5350 outrel.r_offset =
5351 _bfd_elf_section_offset (output_bfd, info, input_section,
5352 rel->r_offset);
5353 if (outrel.r_offset == (bfd_vma) - 1)
5354 skip = TRUE;
5355 else if (outrel.r_offset == (bfd_vma) - 2)
5356 {
5357 skip = TRUE;
5358 relocate = TRUE;
5359 }
5360
5361 outrel.r_offset += (input_section->output_section->vma
5362 + input_section->output_offset);
5363
5364 if (skip)
5365 memset (&outrel, 0, sizeof outrel);
5366 else if (h != NULL
5367 && h->dynindx != -1
0e1862bb 5368 && (!bfd_link_pic (info)
ac33b731
JW		 5369 || !(bfd_link_pie (info)
5370 || SYMBOLIC_BIND (info, h))
0e1862bb 5371 || !h->def_regular))
cec5225b 5372 outrel.r_info = ELFNN_R_INFO (h->dynindx, r_type);
a06ea964
NC		 5373 else
5374 {
5375 int symbol;
5376
5377 /* On SVR4-ish systems, the dynamic loader cannot
5378 relocate the text and data segments independently,
5379 so the symbol does not matter. */
5380 symbol = 0;
1f56df9d 5381 relocate = globals->no_apply_dynamic_relocs ? FALSE : TRUE;
a6bb11b2 5382 outrel.r_info = ELFNN_R_INFO (symbol, AARCH64_R (RELATIVE));
a06ea964
NC		 5383 outrel.r_addend += value;
5384 }
5385
1419bbe5
WN		 5386 sreloc = elf_section_data (input_section)->sreloc;
5387 if (sreloc == NULL || sreloc->contents == NULL)
5388 return bfd_reloc_notsupported;
5389
5390 loc = sreloc->contents + sreloc->reloc_count++ * RELOC_SIZE (globals);
cec5225b 5391 bfd_elfNN_swap_reloca_out (output_bfd, &outrel, loc);
a06ea964 5392
1419bbe5 5393 if (sreloc->reloc_count * RELOC_SIZE (globals) > sreloc->size)
a06ea964
NC		 5394 {
5395 /* Sanity to check that we have previously allocated
5396 sufficient space in the relocation section for the
5397 number of relocations we actually want to emit. */
5398 abort ();
5399 }
5400
5401 /* If this reloc is against an external symbol, we do not want to
5402 fiddle with the addend. Otherwise, we need to include the symbol
5403 value so that it becomes an addend for the dynamic reloc. */
5404 if (!relocate)
5405 return bfd_reloc_ok;
5406
5407 return _bfd_final_link_relocate (howto, input_bfd, input_section,
5408 contents, rel->r_offset, value,
5409 signed_addend);
5410 }
5411 else
5412 value += signed_addend;
5413 break;
5414
a6bb11b2 5415 case BFD_RELOC_AARCH64_CALL26:
ce336788 5416 case BFD_RELOC_AARCH64_JUMP26:
a06ea964
NC		 5417 {
5418 asection *splt = globals->root.splt;
5419 bfd_boolean via_plt_p =
5420 splt != NULL && h != NULL && h->plt.offset != (bfd_vma) - 1;
5421
5422 /* A call to an undefined weak symbol is converted to a jump to
5423 the next instruction unless a PLT entry will be created.
5424 The jump to the next instruction is optimized as a NOP.
5425 Do the same for local undefined symbols. */
5426 if (weak_undef_p && ! via_plt_p)
5427 {
5428 bfd_putl32 (INSN_NOP, hit_data);
5429 return bfd_reloc_ok;
5430 }
5431
5432 /* If the call goes through a PLT entry, make sure to
5433 check distance to the right destination address. */
5434 if (via_plt_p)
07f9ddfe
JW		 5435 value = (splt->output_section->vma
5436 + splt->output_offset + h->plt.offset);
5437
5438 /* Check if a stub has to be inserted because the destination
5439 is too far away. */
5440 struct elf_aarch64_stub_hash_entry *stub_entry = NULL;
2f340668
JW		 5441
5442 /* If the branch destination is directed to plt stub, "value" will be
5443 the final destination, otherwise we should plus signed_addend, it may
5444 contain non-zero value, for example call to local function symbol
5445 which are turned into "sec_sym + sec_off", and sec_off is kept in
5446 signed_addend. */
5447 if (! aarch64_valid_branch_p (via_plt_p ? value : value + signed_addend,
5448 place))
07f9ddfe
JW		 5449 /* The target is out of reach, so redirect the branch to
5450 the local stub for this function. */
5451 stub_entry = elfNN_aarch64_get_stub_entry (input_section, sym_sec, h,
5452 rel, globals);
5453 if (stub_entry != NULL)
2f340668
JW		 5454 {
5455 value = (stub_entry->stub_offset
5456 + stub_entry->stub_sec->output_offset
5457 + stub_entry->stub_sec->output_section->vma);
5458
5459 /* We have redirected the destination to stub entry address,
5460 so ignore any addend record in the original rela entry. */
5461 signed_addend = 0;
5462 }
a06ea964 5463 }
caed7120
YZ		 5464 value = _bfd_aarch64_elf_resolve_relocation (bfd_r_type, place, value,
5465 signed_addend, weak_undef_p);
07f9ddfe 5466 *unresolved_reloc_p = FALSE;
a06ea964
NC		 5467 break;
5468
dcbd20eb
JW		 5469 case BFD_RELOC_AARCH64_16_PCREL:
5470 case BFD_RELOC_AARCH64_32_PCREL:
5471 case BFD_RELOC_AARCH64_64_PCREL:
ce336788
JW		 5472 case BFD_RELOC_AARCH64_ADR_HI21_NC_PCREL:
5473 case BFD_RELOC_AARCH64_ADR_HI21_PCREL:
5474 case BFD_RELOC_AARCH64_ADR_LO21_PCREL:
5475 case BFD_RELOC_AARCH64_LD_LO19_PCREL:
1daf502a
RL		 5476 case BFD_RELOC_AARCH64_MOVW_PREL_G0:
5477 case BFD_RELOC_AARCH64_MOVW_PREL_G0_NC:
5478 case BFD_RELOC_AARCH64_MOVW_PREL_G1:
5479 case BFD_RELOC_AARCH64_MOVW_PREL_G1_NC:
5480 case BFD_RELOC_AARCH64_MOVW_PREL_G2:
5481 case BFD_RELOC_AARCH64_MOVW_PREL_G2_NC:
5482 case BFD_RELOC_AARCH64_MOVW_PREL_G3:
0e1862bb 5483 if (bfd_link_pic (info)
dcbd20eb
JW		 5484 && (input_section->flags & SEC_ALLOC) != 0
5485 && (input_section->flags & SEC_READONLY) != 0
d68f1976 5486 && !SYMBOL_REFERENCES_LOCAL (info, h))
dcbd20eb
JW		 5487 {
5488 int howto_index = bfd_r_type - BFD_RELOC_AARCH64_RELOC_START;
5489
4eca0228 5490 _bfd_error_handler
695344c0 5491 /* xgettext:c-format */
871b3ab2 5492 (_("%pB: relocation %s against symbol `%s' which may bind "
d68f1976
JW		 5493 "externally can not be used when making a shared object; "
5494 "recompile with -fPIC"),
dcbd20eb
JW		 5495 input_bfd, elfNN_aarch64_howto_table[howto_index].name,
5496 h->root.root.string);
5497 bfd_set_error (bfd_error_bad_value);
1d75a8e2 5498 return bfd_reloc_notsupported;
dcbd20eb 5499 }
1a0670f3 5500 /* Fall through. */
dcbd20eb 5501
a6bb11b2 5502 case BFD_RELOC_AARCH64_16:
92d77487
RL		 5503#if ARCH_SIZE == 64
5504 case BFD_RELOC_AARCH64_32:
5505#endif
a6bb11b2 5506 case BFD_RELOC_AARCH64_ADD_LO12:
a6bb11b2 5507 case BFD_RELOC_AARCH64_BRANCH19:
ce336788 5508 case BFD_RELOC_AARCH64_LDST128_LO12:
a6bb11b2
YZ		 5509 case BFD_RELOC_AARCH64_LDST16_LO12:
5510 case BFD_RELOC_AARCH64_LDST32_LO12:
5511 case BFD_RELOC_AARCH64_LDST64_LO12:
ce336788 5512 case BFD_RELOC_AARCH64_LDST8_LO12:
a6bb11b2
YZ		 5513 case BFD_RELOC_AARCH64_MOVW_G0:
5514 case BFD_RELOC_AARCH64_MOVW_G0_NC:
ce336788 5515 case BFD_RELOC_AARCH64_MOVW_G0_S:
a6bb11b2
YZ		 5516 case BFD_RELOC_AARCH64_MOVW_G1:
5517 case BFD_RELOC_AARCH64_MOVW_G1_NC:
ce336788 5518 case BFD_RELOC_AARCH64_MOVW_G1_S:
a6bb11b2
YZ		 5519 case BFD_RELOC_AARCH64_MOVW_G2:
5520 case BFD_RELOC_AARCH64_MOVW_G2_NC:
ce336788 5521 case BFD_RELOC_AARCH64_MOVW_G2_S:
a6bb11b2 5522 case BFD_RELOC_AARCH64_MOVW_G3:
a6bb11b2 5523 case BFD_RELOC_AARCH64_TSTBR14:
caed7120
YZ		 5524 value = _bfd_aarch64_elf_resolve_relocation (bfd_r_type, place, value,
5525 signed_addend, weak_undef_p);
a06ea964
NC		 5526 break;
5527
a6bb11b2
YZ		 5528 case BFD_RELOC_AARCH64_ADR_GOT_PAGE:
5529 case BFD_RELOC_AARCH64_GOT_LD_PREL19:
7018c030 5530 case BFD_RELOC_AARCH64_LD32_GOTPAGE_LO14:
ce336788 5531 case BFD_RELOC_AARCH64_LD32_GOT_LO12_NC:
99ad26cb 5532 case BFD_RELOC_AARCH64_LD64_GOTPAGE_LO15:
ce336788 5533 case BFD_RELOC_AARCH64_LD64_GOT_LO12_NC:
2aff25ba
JW		 5534 case BFD_RELOC_AARCH64_LD64_GOTOFF_LO15:
5535 case BFD_RELOC_AARCH64_MOVW_GOTOFF_G0_NC:
5536 case BFD_RELOC_AARCH64_MOVW_GOTOFF_G1:
a06ea964
NC		 5537 if (globals->root.sgot == NULL)
5538 BFD_ASSERT (h != NULL);
5539
ff07562f 5540 relative_reloc = FALSE;
a06ea964
NC		 5541 if (h != NULL)
5542 {
99ad26cb 5543 bfd_vma addend = 0;
ff07562f
JW		 5544
5545 /* If a symbol is not dynamic and is not undefined weak, bind it
5546 locally and generate a RELATIVE relocation under PIC mode.
5547
5548 NOTE: one symbol may be referenced by several relocations, we
5549 should only generate one RELATIVE relocation for that symbol.
5550 Therefore, check GOT offset mark first. */
5551 if (h->dynindx == -1
5552 && !h->forced_local
5553 && h->root.type != bfd_link_hash_undefweak
5554 && bfd_link_pic (info)
5555 && !symbol_got_offset_mark_p (input_bfd, h, r_symndx))
5556 relative_reloc = TRUE;
5557
a06ea964
NC		 5558 value = aarch64_calculate_got_entry_vma (h, globals, info, value,
5559 output_bfd,
5560 unresolved_reloc_p);
ff07562f
JW		 5561 /* Record the GOT entry address which will be used when generating
5562 RELATIVE relocation. */
5563 if (relative_reloc)
5564 got_entry_addr = value;
5565
2aff25ba 5566 if (aarch64_relocation_aginst_gp_p (bfd_r_type))
99ad26cb
JW		 5567 addend = (globals->root.sgot->output_section->vma
5568 + globals->root.sgot->output_offset);
caed7120 5569 value = _bfd_aarch64_elf_resolve_relocation (bfd_r_type, place, value,
99ad26cb 5570 addend, weak_undef_p);
a06ea964 5571 }
b53b1bed
JW		 5572 else
5573 {
99ad26cb 5574 bfd_vma addend = 0;
b53b1bed
JW		 5575 struct elf_aarch64_local_symbol *locals
5576 = elf_aarch64_locals (input_bfd);
5577
5578 if (locals == NULL)
5579 {
5580 int howto_index = bfd_r_type - BFD_RELOC_AARCH64_RELOC_START;
4eca0228 5581 _bfd_error_handler
695344c0 5582 /* xgettext:c-format */
90b6238f 5583 (_("%pB: local symbol descriptor table be NULL when applying "
b53b1bed
JW		 5584 "relocation %s against local symbol"),
5585 input_bfd, elfNN_aarch64_howto_table[howto_index].name);
5586 abort ();
5587 }
5588
5589 off = symbol_got_offset (input_bfd, h, r_symndx);
5590 base_got = globals->root.sgot;
ff07562f
JW		 5591 got_entry_addr = (base_got->output_section->vma
5592 + base_got->output_offset + off);
b53b1bed
JW		 5593
5594 if (!symbol_got_offset_mark_p (input_bfd, h, r_symndx))
5595 {
5596 bfd_put_64 (output_bfd, value, base_got->contents + off);
5597
ff07562f
JW		 5598 /* For local symbol, we have done absolute relocation in static
5599 linking stage. While for shared library, we need to update the
5600 content of GOT entry according to the shared object's runtime
5601 base address. So, we need to generate a R_AARCH64_RELATIVE reloc
5602 for dynamic linker. */
0e1862bb 5603 if (bfd_link_pic (info))
ff07562f 5604 relative_reloc = TRUE;
b53b1bed
JW		 5605
5606 symbol_got_offset_mark (input_bfd, h, r_symndx);
5607 }
5608
5609 /* Update the relocation value to GOT entry addr as we have transformed
5610 the direct data access into indirect data access through GOT. */
5611 value = got_entry_addr;
99ad26cb 5612
2aff25ba 5613 if (aarch64_relocation_aginst_gp_p (bfd_r_type))
99ad26cb
JW		 5614 addend = base_got->output_section->vma + base_got->output_offset;
5615
5616 value = _bfd_aarch64_elf_resolve_relocation (bfd_r_type, place, value,
5617 addend, weak_undef_p);
b53b1bed 5618 }
ff07562f
JW		 5619
5620 if (relative_reloc)
5621 {
5622 asection *s;
5623 Elf_Internal_Rela outrel;
5624
5625 s = globals->root.srelgot;
5626 if (s == NULL)
5627 abort ();
5628
5629 outrel.r_offset = got_entry_addr;
5630 outrel.r_info = ELFNN_R_INFO (0, AARCH64_R (RELATIVE));
5631 outrel.r_addend = orig_value;
5632 elf_append_rela (output_bfd, s, &outrel);
5633 }
a2e1db00
RL		 5634 break;
5635
ce336788 5636 case BFD_RELOC_AARCH64_TLSGD_ADD_LO12_NC:
a6bb11b2 5637 case BFD_RELOC_AARCH64_TLSGD_ADR_PAGE21:
3c12b054 5638 case BFD_RELOC_AARCH64_TLSGD_ADR_PREL21:
a6bb11b2 5639 case BFD_RELOC_AARCH64_TLSIE_ADR_GOTTPREL_PAGE21:
a6bb11b2 5640 case BFD_RELOC_AARCH64_TLSIE_LD32_GOTTPREL_LO12_NC:
ce336788 5641 case BFD_RELOC_AARCH64_TLSIE_LD64_GOTTPREL_LO12_NC:
043bf05a 5642 case BFD_RELOC_AARCH64_TLSIE_LD_GOTTPREL_PREL19:
73f925cc 5643 case BFD_RELOC_AARCH64_TLSLD_ADD_LO12_NC:
f69e4920 5644 case BFD_RELOC_AARCH64_TLSLD_ADR_PAGE21:
77a69ff8 5645 case BFD_RELOC_AARCH64_TLSLD_ADR_PREL21:
a06ea964
NC		 5646 if (globals->root.sgot == NULL)
5647 return bfd_reloc_notsupported;
5648
5649 value = (symbol_got_offset (input_bfd, h, r_symndx)
5650 + globals->root.sgot->output_section->vma
f44a1f8e 5651 + globals->root.sgot->output_offset);
a06ea964 5652
caed7120
YZ		 5653 value = _bfd_aarch64_elf_resolve_relocation (bfd_r_type, place, value,
5654 0, weak_undef_p);
a06ea964
NC		 5655 *unresolved_reloc_p = FALSE;
5656 break;
5657
7ba7cfe4 5658 case BFD_RELOC_AARCH64_TLSGD_MOVW_G0_NC:
94facae3 5659 case BFD_RELOC_AARCH64_TLSGD_MOVW_G1:
3b957e5b
RL		 5660 case BFD_RELOC_AARCH64_TLSIE_MOVW_GOTTPREL_G0_NC:
5661 case BFD_RELOC_AARCH64_TLSIE_MOVW_GOTTPREL_G1:
94facae3
RL		 5662 if (globals->root.sgot == NULL)
5663 return bfd_reloc_notsupported;
5664
5665 value = symbol_got_offset (input_bfd, h, r_symndx);
5666 value = _bfd_aarch64_elf_resolve_relocation (bfd_r_type, place, value,
5667 0, weak_undef_p);
5668 *unresolved_reloc_p = FALSE;
5669 break;
5670
6ffe9a1b 5671 case BFD_RELOC_AARCH64_TLSLD_ADD_DTPREL_HI12:
40fbed84 5672 case BFD_RELOC_AARCH64_TLSLD_ADD_DTPREL_LO12:
753999c1 5673 case BFD_RELOC_AARCH64_TLSLD_ADD_DTPREL_LO12_NC:
07c9aa07
JW		 5674 case BFD_RELOC_AARCH64_TLSLD_LDST16_DTPREL_LO12:
5675 case BFD_RELOC_AARCH64_TLSLD_LDST16_DTPREL_LO12_NC:
5676 case BFD_RELOC_AARCH64_TLSLD_LDST32_DTPREL_LO12:
5677 case BFD_RELOC_AARCH64_TLSLD_LDST32_DTPREL_LO12_NC:
5678 case BFD_RELOC_AARCH64_TLSLD_LDST64_DTPREL_LO12:
5679 case BFD_RELOC_AARCH64_TLSLD_LDST64_DTPREL_LO12_NC:
5680 case BFD_RELOC_AARCH64_TLSLD_LDST8_DTPREL_LO12:
5681 case BFD_RELOC_AARCH64_TLSLD_LDST8_DTPREL_LO12_NC:
6ffe9a1b
JW		 5682 case BFD_RELOC_AARCH64_TLSLD_MOVW_DTPREL_G0:
5683 case BFD_RELOC_AARCH64_TLSLD_MOVW_DTPREL_G0_NC:
5684 case BFD_RELOC_AARCH64_TLSLD_MOVW_DTPREL_G1:
5685 case BFD_RELOC_AARCH64_TLSLD_MOVW_DTPREL_G1_NC:
5686 case BFD_RELOC_AARCH64_TLSLD_MOVW_DTPREL_G2:
40fbed84
JW		 5687 value = _bfd_aarch64_elf_resolve_relocation (bfd_r_type, place, value,
5688 signed_addend - dtpoff_base (info),
5689 weak_undef_p);
5690 break;
5691
a6bb11b2
YZ		 5692 case BFD_RELOC_AARCH64_TLSLE_ADD_TPREL_HI12:
5693 case BFD_RELOC_AARCH64_TLSLE_ADD_TPREL_LO12:
5694 case BFD_RELOC_AARCH64_TLSLE_ADD_TPREL_LO12_NC:
5695 case BFD_RELOC_AARCH64_TLSLE_MOVW_TPREL_G0:
5696 case BFD_RELOC_AARCH64_TLSLE_MOVW_TPREL_G0_NC:
5697 case BFD_RELOC_AARCH64_TLSLE_MOVW_TPREL_G1:
5698 case BFD_RELOC_AARCH64_TLSLE_MOVW_TPREL_G1_NC:
5699 case BFD_RELOC_AARCH64_TLSLE_MOVW_TPREL_G2:
caed7120
YZ		 5700 value = _bfd_aarch64_elf_resolve_relocation (bfd_r_type, place, value,
5701 signed_addend - tpoff_base (info),
5702 weak_undef_p);
a06ea964
NC		 5703 *unresolved_reloc_p = FALSE;
5704 break;
5705
f955cccf 5706 case BFD_RELOC_AARCH64_TLSDESC_ADD_LO12:
a6bb11b2 5707 case BFD_RELOC_AARCH64_TLSDESC_ADR_PAGE21:
389b8029 5708 case BFD_RELOC_AARCH64_TLSDESC_ADR_PREL21:
a6bb11b2 5709 case BFD_RELOC_AARCH64_TLSDESC_LD32_LO12_NC:
f955cccf 5710 case BFD_RELOC_AARCH64_TLSDESC_LD64_LO12:
1ada945d 5711 case BFD_RELOC_AARCH64_TLSDESC_LD_PREL19:
a06ea964
NC		 5712 if (globals->root.sgot == NULL)
5713 return bfd_reloc_notsupported;
a06ea964
NC		 5714 value = (symbol_tlsdesc_got_offset (input_bfd, h, r_symndx)
5715 + globals->root.sgotplt->output_section->vma
f44a1f8e 5716 + globals->root.sgotplt->output_offset
a06ea964
NC		 5717 + globals->sgotplt_jump_table_size);
5718
caed7120
YZ		 5719 value = _bfd_aarch64_elf_resolve_relocation (bfd_r_type, place, value,
5720 0, weak_undef_p);
a06ea964
NC		 5721 *unresolved_reloc_p = FALSE;
5722 break;
5723
0484b454
RL		 5724 case BFD_RELOC_AARCH64_TLSDESC_OFF_G0_NC:
5725 case BFD_RELOC_AARCH64_TLSDESC_OFF_G1:
5726 if (globals->root.sgot == NULL)
5727 return bfd_reloc_notsupported;
5728
5729 value = (symbol_tlsdesc_got_offset (input_bfd, h, r_symndx)
5730 + globals->root.sgotplt->output_section->vma
5731 + globals->root.sgotplt->output_offset
5732 + globals->sgotplt_jump_table_size);
5733
5734 value -= (globals->root.sgot->output_section->vma
5735 + globals->root.sgot->output_offset);
5736
5737 value = _bfd_aarch64_elf_resolve_relocation (bfd_r_type, place, value,
5738 0, weak_undef_p);
5739 *unresolved_reloc_p = FALSE;
5740 break;
5741
a06ea964
NC		 5742 default:
5743 return bfd_reloc_notsupported;
5744 }
5745
5746 if (saved_addend)
5747 *saved_addend = value;
5748
5749 /* Only apply the final relocation in a sequence. */
5750 if (save_addend)
5751 return bfd_reloc_continue;
5752
caed7120
YZ		 5753 return _bfd_aarch64_elf_put_addend (input_bfd, hit_data, bfd_r_type,
5754 howto, value);
a06ea964
NC		 5755}
5756
2d0ca824
YN		 5757/* LP64 and ILP32 operates on x- and w-registers respectively.
5758 Next definitions take into account the difference between
5759 corresponding machine codes. R means x-register if the target
5760 arch is LP64, and w-register if the target is ILP32. */
5761
5762#if ARCH_SIZE == 64
5763# define add_R0_R0 (0x91000000)
5764# define add_R0_R0_R1 (0x8b000020)
5765# define add_R0_R1 (0x91400020)
5766# define ldr_R0 (0x58000000)
5767# define ldr_R0_mask(i) (i & 0xffffffe0)
5768# define ldr_R0_x0 (0xf9400000)
5769# define ldr_hw_R0 (0xf2a00000)
5770# define movk_R0 (0xf2800000)
5771# define movz_R0 (0xd2a00000)
5772# define movz_hw_R0 (0xd2c00000)
5773#else /*ARCH_SIZE == 32 */
5774# define add_R0_R0 (0x11000000)
5775# define add_R0_R0_R1 (0x0b000020)
5776# define add_R0_R1 (0x11400020)
5777# define ldr_R0 (0x18000000)
5778# define ldr_R0_mask(i) (i & 0xbfffffe0)
5779# define ldr_R0_x0 (0xb9400000)
5780# define ldr_hw_R0 (0x72a00000)
5781# define movk_R0 (0x72800000)
5782# define movz_R0 (0x52a00000)
5783# define movz_hw_R0 (0x52c00000)
5784#endif
5785
a06ea964
NC		 5786/* Handle TLS relaxations. Relaxing is possible for symbols that use
5787 R_AARCH64_TLSDESC_ADR_{PAGE, LD64_LO12_NC, ADD_LO12_NC} during a static
5788 link.
5789
5790 Return bfd_reloc_ok if we're done, bfd_reloc_continue if the caller
5791 is to then call final_link_relocate. Return other values in the
5792 case of error. */
5793
5794static bfd_reloc_status_type
cec5225b 5795elfNN_aarch64_tls_relax (struct elf_aarch64_link_hash_table *globals,
a06ea964 5796 bfd *input_bfd, bfd_byte *contents,
06d2788c 5797 Elf_Internal_Rela *rel, struct elf_link_hash_entry *h)
a06ea964
NC		 5798{
5799 bfd_boolean is_local = h == NULL;
cec5225b 5800 unsigned int r_type = ELFNN_R_TYPE (rel->r_info);
a06ea964
NC		 5801 unsigned long insn;
5802
5803 BFD_ASSERT (globals && input_bfd && contents && rel);
5804
0aa13fee 5805 switch (elfNN_aarch64_bfd_reloc_from_type (input_bfd, r_type))
a06ea964 5806 {
a6bb11b2 5807 case BFD_RELOC_AARCH64_TLSDESC_ADR_PAGE21:
ce336788 5808 case BFD_RELOC_AARCH64_TLSGD_ADR_PAGE21:
a06ea964
NC		 5809 if (is_local)
5810 {
5811 /* GD->LE relaxation:
2d0ca824 5812 adrp x0, :tlsgd:var => movz R0, :tprel_g1:var
a06ea964 5813 or
2d0ca824
YN		 5814 adrp x0, :tlsdesc:var => movz R0, :tprel_g1:var
5815
5816 Where R is x for LP64, and w for ILP32. */
5817 bfd_putl32 (movz_R0, contents + rel->r_offset);
a06ea964
NC		 5818 return bfd_reloc_continue;
5819 }
5820 else
5821 {
5822 /* GD->IE relaxation:
5823 adrp x0, :tlsgd:var => adrp x0, :gottprel:var
5824 or
5825 adrp x0, :tlsdesc:var => adrp x0, :gottprel:var
5826 */
a06ea964
NC		 5827 return bfd_reloc_continue;
5828 }
5829
389b8029
MS		 5830 case BFD_RELOC_AARCH64_TLSDESC_ADR_PREL21:
5831 BFD_ASSERT (0);
5832 break;
5833
1ada945d
MS		 5834 case BFD_RELOC_AARCH64_TLSDESC_LD_PREL19:
5835 if (is_local)
5836 {
5837 /* Tiny TLSDESC->LE relaxation:
07d6d2b8
AM		 5838 ldr x1, :tlsdesc:var => movz R0, #:tprel_g1:var
5839 adr x0, :tlsdesc:var => movk R0, #:tprel_g0_nc:var
1ada945d 5840 .tlsdesccall var
07d6d2b8 5841 blr x1 => nop
2d0ca824
YN		 5842
5843 Where R is x for LP64, and w for ILP32. */
1ada945d
MS		 5844 BFD_ASSERT (ELFNN_R_TYPE (rel[1].r_info) == AARCH64_R (TLSDESC_ADR_PREL21));
5845 BFD_ASSERT (ELFNN_R_TYPE (rel[2].r_info) == AARCH64_R (TLSDESC_CALL));
5846
5847 rel[1].r_info = ELFNN_R_INFO (ELFNN_R_SYM (rel->r_info),
5848 AARCH64_R (TLSLE_MOVW_TPREL_G0_NC));
5849 rel[2].r_info = ELFNN_R_INFO (STN_UNDEF, R_AARCH64_NONE);
5850
2d0ca824
YN		 5851 bfd_putl32 (movz_R0, contents + rel->r_offset);
5852 bfd_putl32 (movk_R0, contents + rel->r_offset + 4);
1ada945d
MS		 5853 bfd_putl32 (INSN_NOP, contents + rel->r_offset + 8);
5854 return bfd_reloc_continue;
5855 }
5856 else
5857 {
5858 /* Tiny TLSDESC->IE relaxation:
07d6d2b8
AM		 5859 ldr x1, :tlsdesc:var => ldr x0, :gottprel:var
5860 adr x0, :tlsdesc:var => nop
1ada945d 5861 .tlsdesccall var
07d6d2b8 5862 blr x1 => nop
1ada945d
MS		 5863 */
5864 BFD_ASSERT (ELFNN_R_TYPE (rel[1].r_info) == AARCH64_R (TLSDESC_ADR_PREL21));
5865 BFD_ASSERT (ELFNN_R_TYPE (rel[2].r_info) == AARCH64_R (TLSDESC_CALL));
5866
5867 rel[1].r_info = ELFNN_R_INFO (STN_UNDEF, R_AARCH64_NONE);
5868 rel[2].r_info = ELFNN_R_INFO (STN_UNDEF, R_AARCH64_NONE);
5869
2d0ca824 5870 bfd_putl32 (ldr_R0, contents + rel->r_offset);
1ada945d
MS		 5871 bfd_putl32 (INSN_NOP, contents + rel->r_offset + 4);
5872 bfd_putl32 (INSN_NOP, contents + rel->r_offset + 8);
5873 return bfd_reloc_continue;
5874 }
5875
3c12b054
MS		 5876 case BFD_RELOC_AARCH64_TLSGD_ADR_PREL21:
5877 if (is_local)
5878 {
5879 /* Tiny GD->LE relaxation:
07d6d2b8
AM		 5880 adr x0, :tlsgd:var => mrs x1, tpidr_el0
5881 bl __tls_get_addr => add R0, R1, #:tprel_hi12:x, lsl #12
5882 nop => add R0, R0, #:tprel_lo12_nc:x
2d0ca824
YN		 5883
5884 Where R is x for LP64, and x for Ilp32. */
3c12b054
MS		 5885
5886 /* First kill the tls_get_addr reloc on the bl instruction. */
5887 BFD_ASSERT (rel->r_offset + 4 == rel[1].r_offset);
5888
5889 bfd_putl32 (0xd53bd041, contents + rel->r_offset + 0);
2d0ca824
YN		 5890 bfd_putl32 (add_R0_R1, contents + rel->r_offset + 4);
5891 bfd_putl32 (add_R0_R0, contents + rel->r_offset + 8);
3c12b054
MS		 5892
5893 rel[1].r_info = ELFNN_R_INFO (ELFNN_R_SYM (rel->r_info),
5894 AARCH64_R (TLSLE_ADD_TPREL_LO12_NC));
5895 rel[1].r_offset = rel->r_offset + 8;
5896
5897 /* Move the current relocation to the second instruction in
5898 the sequence. */
5899 rel->r_offset += 4;
5900 rel->r_info = ELFNN_R_INFO (ELFNN_R_SYM (rel->r_info),
5901 AARCH64_R (TLSLE_ADD_TPREL_HI12));
5902 return bfd_reloc_continue;
5903 }
5904 else
5905 {
5906 /* Tiny GD->IE relaxation:
07d6d2b8
AM		 5907 adr x0, :tlsgd:var => ldr R0, :gottprel:var
5908 bl __tls_get_addr => mrs x1, tpidr_el0
5909 nop => add R0, R0, R1
2d0ca824
YN		 5910
5911 Where R is x for LP64, and w for Ilp32. */
3c12b054
MS		 5912
5913 /* First kill the tls_get_addr reloc on the bl instruction. */
5914 BFD_ASSERT (rel->r_offset + 4 == rel[1].r_offset);
5915 rel[1].r_info = ELFNN_R_INFO (STN_UNDEF, R_AARCH64_NONE);
5916
2d0ca824 5917 bfd_putl32 (ldr_R0, contents + rel->r_offset);
3c12b054 5918 bfd_putl32 (0xd53bd041, contents + rel->r_offset + 4);
2d0ca824 5919 bfd_putl32 (add_R0_R0_R1, contents + rel->r_offset + 8);
3c12b054
MS		 5920 return bfd_reloc_continue;
5921 }
5922
ac734732
RL		 5923#if ARCH_SIZE == 64
5924 case BFD_RELOC_AARCH64_TLSGD_MOVW_G1:
5925 BFD_ASSERT (ELFNN_R_TYPE (rel[1].r_info) == AARCH64_R (TLSGD_MOVW_G0_NC));
5926 BFD_ASSERT (rel->r_offset + 12 == rel[2].r_offset);
5927 BFD_ASSERT (ELFNN_R_TYPE (rel[2].r_info) == AARCH64_R (CALL26));
5928
5929 if (is_local)
5930 {
5931 /* Large GD->LE relaxation:
07d6d2b8 5932 movz x0, #:tlsgd_g1:var => movz x0, #:tprel_g2:var, lsl #32
ac734732 5933 movk x0, #:tlsgd_g0_nc:var => movk x0, #:tprel_g1_nc:var, lsl #16
07d6d2b8
AM		 5934 add x0, gp, x0 => movk x0, #:tprel_g0_nc:var
5935 bl __tls_get_addr => mrs x1, tpidr_el0
5936 nop => add x0, x0, x1
ac734732
RL		 5937 */
5938 rel[2].r_info = ELFNN_R_INFO (ELFNN_R_SYM (rel->r_info),
5939 AARCH64_R (TLSLE_MOVW_TPREL_G0_NC));
5940 rel[2].r_offset = rel->r_offset + 8;
5941
2d0ca824
YN		 5942 bfd_putl32 (movz_hw_R0, contents + rel->r_offset + 0);
5943 bfd_putl32 (ldr_hw_R0, contents + rel->r_offset + 4);
5944 bfd_putl32 (movk_R0, contents + rel->r_offset + 8);
ac734732 5945 bfd_putl32 (0xd53bd041, contents + rel->r_offset + 12);
2d0ca824 5946 bfd_putl32 (add_R0_R0_R1, contents + rel->r_offset + 16);
ac734732
RL		 5947 }
5948 else
5949 {
5950 /* Large GD->IE relaxation:
07d6d2b8 5951 movz x0, #:tlsgd_g1:var => movz x0, #:gottprel_g1:var, lsl #16
ac734732 5952 movk x0, #:tlsgd_g0_nc:var => movk x0, #:gottprel_g0_nc:var
07d6d2b8
AM		 5953 add x0, gp, x0 => ldr x0, [gp, x0]
5954 bl __tls_get_addr => mrs x1, tpidr_el0
5955 nop => add x0, x0, x1
ac734732
RL		 5956 */
5957 rel[2].r_info = ELFNN_R_INFO (STN_UNDEF, R_AARCH64_NONE);
5958 bfd_putl32 (0xd2a80000, contents + rel->r_offset + 0);
2d0ca824 5959 bfd_putl32 (ldr_R0, contents + rel->r_offset + 8);
ac734732 5960 bfd_putl32 (0xd53bd041, contents + rel->r_offset + 12);
2d0ca824 5961 bfd_putl32 (add_R0_R0_R1, contents + rel->r_offset + 16);
ac734732
RL		 5962 }
5963 return bfd_reloc_continue;
5964
5965 case BFD_RELOC_AARCH64_TLSGD_MOVW_G0_NC:
5966 return bfd_reloc_continue;
5967#endif
5968
043bf05a
MS		 5969 case BFD_RELOC_AARCH64_TLSIE_LD_GOTTPREL_PREL19:
5970 return bfd_reloc_continue;
5971
a6bb11b2 5972 case BFD_RELOC_AARCH64_TLSDESC_LDNN_LO12_NC:
a06ea964
NC		 5973 if (is_local)
5974 {
5975 /* GD->LE relaxation:
5976 ldr xd, [x0, #:tlsdesc_lo12:var] => movk x0, :tprel_g0_nc:var
2d0ca824
YN		 5977
5978 Where R is x for lp64 mode, and w for ILP32 mode. */
5979 bfd_putl32 (movk_R0, contents + rel->r_offset);
a06ea964
NC		 5980 return bfd_reloc_continue;
5981 }
5982 else
5983 {
5984 /* GD->IE relaxation:
2d0ca824
YN		 5985 ldr xd, [x0, #:tlsdesc_lo12:var] => ldr R0, [x0, #:gottprel_lo12:var]
5986
5987 Where R is x for lp64 mode, and w for ILP32 mode. */
a06ea964 5988 insn = bfd_getl32 (contents + rel->r_offset);
2d0ca824 5989 bfd_putl32 (ldr_R0_mask (insn), contents + rel->r_offset);
a06ea964
NC		 5990 return bfd_reloc_continue;
5991 }
5992
a6bb11b2 5993 case BFD_RELOC_AARCH64_TLSGD_ADD_LO12_NC:
a06ea964
NC		 5994 if (is_local)
5995 {
5996 /* GD->LE relaxation
07d6d2b8
AM		 5997 add x0, #:tlsgd_lo12:var => movk R0, :tprel_g0_nc:var
5998 bl __tls_get_addr => mrs x1, tpidr_el0
5999 nop => add R0, R1, R0
2d0ca824
YN		 6000
6001 Where R is x for lp64 mode, and w for ILP32 mode. */
a06ea964
NC		 6002
6003 /* First kill the tls_get_addr reloc on the bl instruction. */
6004 BFD_ASSERT (rel->r_offset + 4 == rel[1].r_offset);
cec5225b 6005 rel[1].r_info = ELFNN_R_INFO (STN_UNDEF, R_AARCH64_NONE);
a06ea964 6006
2d0ca824 6007 bfd_putl32 (movk_R0, contents + rel->r_offset);
a06ea964 6008 bfd_putl32 (0xd53bd041, contents + rel->r_offset + 4);
2d0ca824 6009 bfd_putl32 (add_R0_R0_R1, contents + rel->r_offset + 8);
a06ea964
NC		 6010 return bfd_reloc_continue;
6011 }
6012 else
6013 {
6014 /* GD->IE relaxation
07d6d2b8
AM		 6015 ADD x0, #:tlsgd_lo12:var => ldr R0, [x0, #:gottprel_lo12:var]
6016 BL __tls_get_addr => mrs x1, tpidr_el0
a06ea964 6017 R_AARCH64_CALL26
07d6d2b8 6018 NOP => add R0, R1, R0
5cd1d8bc
YN		 6019
6020 Where R is x for lp64 mode, and w for ilp32 mode. */
a06ea964 6021
a6bb11b2 6022 BFD_ASSERT (ELFNN_R_TYPE (rel[1].r_info) == AARCH64_R (CALL26));
a06ea964
NC		 6023
6024 /* Remove the relocation on the BL instruction. */
cec5225b 6025 rel[1].r_info = ELFNN_R_INFO (STN_UNDEF, R_AARCH64_NONE);
a06ea964 6026
a06ea964
NC		 6027 /* We choose to fixup the BL and NOP instructions using the
6028 offset from the second relocation to allow flexibility in
6029 scheduling instructions between the ADD and BL. */
2d0ca824 6030 bfd_putl32 (ldr_R0_x0, contents + rel->r_offset);
5cd1d8bc 6031 bfd_putl32 (0xd53bd041, contents + rel[1].r_offset);
2d0ca824 6032 bfd_putl32 (add_R0_R0_R1, contents + rel[1].r_offset + 4);
a06ea964
NC		 6033 return bfd_reloc_continue;
6034 }
6035
0484b454 6036 case BFD_RELOC_AARCH64_TLSDESC_ADD:
f955cccf 6037 case BFD_RELOC_AARCH64_TLSDESC_ADD_LO12:
a6bb11b2 6038 case BFD_RELOC_AARCH64_TLSDESC_CALL:
a06ea964 6039 /* GD->IE/LE relaxation:
07d6d2b8
AM		 6040 add x0, x0, #:tlsdesc_lo12:var => nop
6041 blr xd => nop
a06ea964
NC		 6042 */
6043 bfd_putl32 (INSN_NOP, contents + rel->r_offset);
6044 return bfd_reloc_ok;
6045
0484b454
RL		 6046 case BFD_RELOC_AARCH64_TLSDESC_LDR:
6047 if (is_local)
6048 {
6049 /* GD->LE relaxation:
2d0ca824
YN		 6050 ldr xd, [gp, xn] => movk R0, #:tprel_g0_nc:var
6051
6052 Where R is x for lp64 mode, and w for ILP32 mode. */
6053 bfd_putl32 (movk_R0, contents + rel->r_offset);
0484b454
RL		 6054 return bfd_reloc_continue;
6055 }
6056 else
6057 {
6058 /* GD->IE relaxation:
2d0ca824
YN		 6059 ldr xd, [gp, xn] => ldr R0, [gp, xn]
6060
6061 Where R is x for lp64 mode, and w for ILP32 mode. */
0484b454 6062 insn = bfd_getl32 (contents + rel->r_offset);
2d0ca824 6063 bfd_putl32 (ldr_R0_mask (insn), contents + rel->r_offset);
0484b454
RL		 6064 return bfd_reloc_ok;
6065 }
6066
6067 case BFD_RELOC_AARCH64_TLSDESC_OFF_G0_NC:
6068 /* GD->LE relaxation:
2d0ca824 6069 movk xd, #:tlsdesc_off_g0_nc:var => movk R0, #:tprel_g1_nc:var, lsl #16
0484b454 6070 GD->IE relaxation:
2d0ca824
YN		 6071 movk xd, #:tlsdesc_off_g0_nc:var => movk Rd, #:gottprel_g0_nc:var
6072
6073 Where R is x for lp64 mode, and w for ILP32 mode. */
0484b454 6074 if (is_local)
2d0ca824 6075 bfd_putl32 (ldr_hw_R0, contents + rel->r_offset);
0484b454
RL		 6076 return bfd_reloc_continue;
6077
6078 case BFD_RELOC_AARCH64_TLSDESC_OFF_G1:
6079 if (is_local)
6080 {
6081 /* GD->LE relaxation:
2d0ca824
YN		 6082 movz xd, #:tlsdesc_off_g1:var => movz R0, #:tprel_g2:var, lsl #32
6083
6084 Where R is x for lp64 mode, and w for ILP32 mode. */
6085 bfd_putl32 (movz_hw_R0, contents + rel->r_offset);
0484b454
RL		 6086 return bfd_reloc_continue;
6087 }
6088 else
6089 {
6090 /* GD->IE relaxation:
2d0ca824
YN		 6091 movz xd, #:tlsdesc_off_g1:var => movz Rd, #:gottprel_g1:var, lsl #16
6092
6093 Where R is x for lp64 mode, and w for ILP32 mode. */
0484b454 6094 insn = bfd_getl32 (contents + rel->r_offset);
2d0ca824 6095 bfd_putl32 (movz_R0 | (insn & 0x1f), contents + rel->r_offset);
0484b454
RL		 6096 return bfd_reloc_continue;
6097 }
6098
a6bb11b2 6099 case BFD_RELOC_AARCH64_TLSIE_ADR_GOTTPREL_PAGE21:
a06ea964 6100 /* IE->LE relaxation:
07d6d2b8 6101 adrp xd, :gottprel:var => movz Rd, :tprel_g1:var
2d0ca824
YN		 6102
6103 Where R is x for lp64 mode, and w for ILP32 mode. */
a06ea964
NC		 6104 if (is_local)
6105 {
6106 insn = bfd_getl32 (contents + rel->r_offset);
2d0ca824 6107 bfd_putl32 (movz_R0 | (insn & 0x1f), contents + rel->r_offset);
a06ea964
NC		 6108 }
6109 return bfd_reloc_continue;
6110
a6bb11b2 6111 case BFD_RELOC_AARCH64_TLSIE_LDNN_GOTTPREL_LO12_NC:
a06ea964 6112 /* IE->LE relaxation:
07d6d2b8 6113 ldr xd, [xm, #:gottprel_lo12:var] => movk Rd, :tprel_g0_nc:var
2d0ca824
YN		 6114
6115 Where R is x for lp64 mode, and w for ILP32 mode. */
a06ea964
NC		 6116 if (is_local)
6117 {
6118 insn = bfd_getl32 (contents + rel->r_offset);
2d0ca824 6119 bfd_putl32 (movk_R0 | (insn & 0x1f), contents + rel->r_offset);
a06ea964
NC		 6120 }
6121 return bfd_reloc_continue;
6122
259364ad
JW		 6123 case BFD_RELOC_AARCH64_TLSLD_ADR_PREL21:
6124 /* LD->LE relaxation (tiny):
6125 adr x0, :tlsldm:x => mrs x0, tpidr_el0
c1fc2d7e
YN		 6126 bl __tls_get_addr => add R0, R0, TCB_SIZE
6127
6128 Where R is x for lp64 mode, and w for ilp32 mode. */
259364ad
JW		 6129 if (is_local)
6130 {
6131 BFD_ASSERT (rel->r_offset + 4 == rel[1].r_offset);
6132 BFD_ASSERT (ELFNN_R_TYPE (rel[1].r_info) == AARCH64_R (CALL26));
6133 /* No need of CALL26 relocation for tls_get_addr. */
6134 rel[1].r_info = ELFNN_R_INFO (STN_UNDEF, R_AARCH64_NONE);
6135 bfd_putl32 (0xd53bd040, contents + rel->r_offset + 0);
2d0ca824
YN		 6136 bfd_putl32 (add_R0_R0 | (TCB_SIZE << 10),
6137 contents + rel->r_offset + 4);
259364ad
JW		 6138 return bfd_reloc_ok;
6139 }
6140 return bfd_reloc_continue;
6141
6142 case BFD_RELOC_AARCH64_TLSLD_ADR_PAGE21:
6143 /* LD->LE relaxation (small):
6144 adrp x0, :tlsldm:x => mrs x0, tpidr_el0
6145 */
6146 if (is_local)
6147 {
6148 bfd_putl32 (0xd53bd040, contents + rel->r_offset);
6149 return bfd_reloc_ok;
6150 }
6151 return bfd_reloc_continue;
6152
6153 case BFD_RELOC_AARCH64_TLSLD_ADD_LO12_NC:
6154 /* LD->LE relaxation (small):
c1fc2d7e 6155 add x0, #:tlsldm_lo12:x => add R0, R0, TCB_SIZE
259364ad 6156 bl __tls_get_addr => nop
c1fc2d7e
YN		 6157
6158 Where R is x for lp64 mode, and w for ilp32 mode. */
259364ad
JW		 6159 if (is_local)
6160 {
6161 BFD_ASSERT (rel->r_offset + 4 == rel[1].r_offset);
6162 BFD_ASSERT (ELFNN_R_TYPE (rel[1].r_info) == AARCH64_R (CALL26));
6163 /* No need of CALL26 relocation for tls_get_addr. */
6164 rel[1].r_info = ELFNN_R_INFO (STN_UNDEF, R_AARCH64_NONE);
2d0ca824
YN		 6165 bfd_putl32 (add_R0_R0 | (TCB_SIZE << 10),
6166 contents + rel->r_offset + 0);
c1fc2d7e 6167 bfd_putl32 (INSN_NOP, contents + rel->r_offset + 4);
259364ad
JW		 6168 return bfd_reloc_ok;
6169 }
6170 return bfd_reloc_continue;
6171
a06ea964
NC		 6172 default:
6173 return bfd_reloc_continue;
6174 }
6175
6176 return bfd_reloc_ok;
6177}
6178
6179/* Relocate an AArch64 ELF section. */
6180
6181static bfd_boolean
cec5225b 6182elfNN_aarch64_relocate_section (bfd *output_bfd,
a06ea964
NC		 6183 struct bfd_link_info *info,
6184 bfd *input_bfd,
6185 asection *input_section,
6186 bfd_byte *contents,
6187 Elf_Internal_Rela *relocs,
6188 Elf_Internal_Sym *local_syms,
6189 asection **local_sections)
6190{
6191 Elf_Internal_Shdr *symtab_hdr;
6192 struct elf_link_hash_entry **sym_hashes;
6193 Elf_Internal_Rela *rel;
6194 Elf_Internal_Rela *relend;
6195 const char *name;
cec5225b 6196 struct elf_aarch64_link_hash_table *globals;
a06ea964
NC		 6197 bfd_boolean save_addend = FALSE;
6198 bfd_vma addend = 0;
6199
cec5225b 6200 globals = elf_aarch64_hash_table (info);
a06ea964
NC		 6201
6202 symtab_hdr = &elf_symtab_hdr (input_bfd);
6203 sym_hashes = elf_sym_hashes (input_bfd);
6204
6205 rel = relocs;
6206 relend = relocs + input_section->reloc_count;
6207 for (; rel < relend; rel++)
6208 {
6209 unsigned int r_type;
a6bb11b2
YZ		 6210 bfd_reloc_code_real_type bfd_r_type;
6211 bfd_reloc_code_real_type relaxed_bfd_r_type;
a06ea964
NC		 6212 reloc_howto_type *howto;
6213 unsigned long r_symndx;
6214 Elf_Internal_Sym *sym;
6215 asection *sec;
6216 struct elf_link_hash_entry *h;
6217 bfd_vma relocation;
6218 bfd_reloc_status_type r;
6219 arelent bfd_reloc;
6220 char sym_type;
6221 bfd_boolean unresolved_reloc = FALSE;
6222 char *error_message = NULL;
6223
cec5225b
YZ		 6224 r_symndx = ELFNN_R_SYM (rel->r_info);
6225 r_type = ELFNN_R_TYPE (rel->r_info);
a06ea964 6226
0aa13fee
AM		 6227 bfd_reloc.howto = elfNN_aarch64_howto_from_type (input_bfd, r_type);
6228 howto = bfd_reloc.howto;
a06ea964 6229
7fcfd62d 6230 if (howto == NULL)
47aeb64c
NC		 6231 return _bfd_unrecognized_reloc (input_bfd, input_section, r_type);
6232
a6bb11b2 6233 bfd_r_type = elfNN_aarch64_bfd_reloc_from_howto (howto);
7fcfd62d 6234
a06ea964
NC		 6235 h = NULL;
6236 sym = NULL;
6237 sec = NULL;
6238
6239 if (r_symndx < symtab_hdr->sh_info)
6240 {
6241 sym = local_syms + r_symndx;
cec5225b 6242 sym_type = ELFNN_ST_TYPE (sym->st_info);
a06ea964
NC		 6243 sec = local_sections[r_symndx];
6244
6245 /* An object file might have a reference to a local
6246 undefined symbol. This is a daft object file, but we
6247 should at least do something about it. */
6248 if (r_type != R_AARCH64_NONE && r_type != R_AARCH64_NULL
6249 && bfd_is_und_section (sec)
6250 && ELF_ST_BIND (sym->st_info) != STB_WEAK)
1a72702b
AM		 6251 (*info->callbacks->undefined_symbol)
6252 (info, bfd_elf_string_from_elf_section
6253 (input_bfd, symtab_hdr->sh_link, sym->st_name),
6254 input_bfd, input_section, rel->r_offset, TRUE);
a06ea964 6255
a06ea964 6256 relocation = _bfd_elf_rela_local_sym (output_bfd, sym, &sec, rel);
1419bbe5
WN		 6257
6258 /* Relocate against local STT_GNU_IFUNC symbol. */
0e1862bb 6259 if (!bfd_link_relocatable (info)
1419bbe5
WN		 6260 && ELF_ST_TYPE (sym->st_info) == STT_GNU_IFUNC)
6261 {
6262 h = elfNN_aarch64_get_local_sym_hash (globals, input_bfd,
6263 rel, FALSE);
6264 if (h == NULL)
6265 abort ();
6266
6267 /* Set STT_GNU_IFUNC symbol value. */
6268 h->root.u.def.value = sym->st_value;
6269 h->root.u.def.section = sec;
6270 }
a06ea964
NC		 6271 }
6272 else
6273 {
62d887d4 6274 bfd_boolean warned, ignored;
a06ea964
NC		 6275
6276 RELOC_FOR_GLOBAL_SYMBOL (info, input_bfd, input_section, rel,
6277 r_symndx, symtab_hdr, sym_hashes,
6278 h, sec, relocation,
62d887d4 6279 unresolved_reloc, warned, ignored);
a06ea964
NC		 6280
6281 sym_type = h->type;
6282 }
6283
6284 if (sec != NULL && discarded_section (sec))
6285 RELOC_AGAINST_DISCARDED_SECTION (info, input_bfd, input_section,
6286 rel, 1, relend, howto, 0, contents);
6287
0e1862bb 6288 if (bfd_link_relocatable (info))
2e0488d3 6289 continue;
a06ea964
NC		 6290
6291 if (h != NULL)
6292 name = h->root.root.string;
6293 else
6294 {
6295 name = (bfd_elf_string_from_elf_section
6296 (input_bfd, symtab_hdr->sh_link, sym->st_name));
6297 if (name == NULL || *name == '\0')
6298 name = bfd_section_name (input_bfd, sec);
6299 }
6300
6301 if (r_symndx != 0
6302 && r_type != R_AARCH64_NONE
6303 && r_type != R_AARCH64_NULL
6304 && (h == NULL
6305 || h->root.type == bfd_link_hash_defined
6306 || h->root.type == bfd_link_hash_defweak)
a6bb11b2 6307 && IS_AARCH64_TLS_RELOC (bfd_r_type) != (sym_type == STT_TLS))
a06ea964 6308 {
4eca0228 6309 _bfd_error_handler
a06ea964 6310 ((sym_type == STT_TLS
695344c0 6311 /* xgettext:c-format */
2dcf00ce 6312 ? _("%pB(%pA+%#" PRIx64 "): %s used with TLS symbol %s")
695344c0 6313 /* xgettext:c-format */
2dcf00ce 6314 : _("%pB(%pA+%#" PRIx64 "): %s used with non-TLS symbol %s")),
a06ea964 6315 input_bfd,
2dcf00ce 6316 input_section, (uint64_t) rel->r_offset, howto->name, name);
a06ea964
NC		 6317 }
6318
a06ea964 6319 /* We relax only if we can see that there can be a valid transition
07d6d2b8
AM		 6320 from a reloc type to another.
6321 We call elfNN_aarch64_final_link_relocate unless we're completely
6322 done, i.e., the relaxation produced the final output we want. */
a06ea964 6323
a6bb11b2
YZ		 6324 relaxed_bfd_r_type = aarch64_tls_transition (input_bfd, info, r_type,
6325 h, r_symndx);
6326 if (relaxed_bfd_r_type != bfd_r_type)
a06ea964 6327 {
a6bb11b2
YZ		 6328 bfd_r_type = relaxed_bfd_r_type;
6329 howto = elfNN_aarch64_howto_from_bfd_reloc (bfd_r_type);
6330 BFD_ASSERT (howto != NULL);
6331 r_type = howto->type;
06d2788c 6332 r = elfNN_aarch64_tls_relax (globals, input_bfd, contents, rel, h);
a06ea964
NC		 6333 unresolved_reloc = 0;
6334 }
6335 else
6336 r = bfd_reloc_continue;
6337
6338 /* There may be multiple consecutive relocations for the
07d6d2b8
AM		 6339 same offset. In that case we are supposed to treat the
6340 output of each relocation as the addend for the next. */
a06ea964
NC		 6341 if (rel + 1 < relend
6342 && rel->r_offset == rel[1].r_offset
cec5225b
YZ		 6343 && ELFNN_R_TYPE (rel[1].r_info) != R_AARCH64_NONE
6344 && ELFNN_R_TYPE (rel[1].r_info) != R_AARCH64_NULL)
a06ea964
NC		 6345 save_addend = TRUE;
6346 else
6347 save_addend = FALSE;
6348
6349 if (r == bfd_reloc_continue)
cec5225b 6350 r = elfNN_aarch64_final_link_relocate (howto, input_bfd, output_bfd,
a06ea964
NC		 6351 input_section, contents, rel,
6352 relocation, info, sec,
6353 h, &unresolved_reloc,
1419bbe5 6354 save_addend, &addend, sym);
a06ea964 6355
0aa13fee 6356 switch (elfNN_aarch64_bfd_reloc_from_type (input_bfd, r_type))
a06ea964 6357 {
ce336788 6358 case BFD_RELOC_AARCH64_TLSGD_ADD_LO12_NC:
a6bb11b2 6359 case BFD_RELOC_AARCH64_TLSGD_ADR_PAGE21:
3c12b054 6360 case BFD_RELOC_AARCH64_TLSGD_ADR_PREL21:
7ba7cfe4 6361 case BFD_RELOC_AARCH64_TLSGD_MOVW_G0_NC:
94facae3 6362 case BFD_RELOC_AARCH64_TLSGD_MOVW_G1:
73f925cc 6363 case BFD_RELOC_AARCH64_TLSLD_ADD_LO12_NC:
f69e4920 6364 case BFD_RELOC_AARCH64_TLSLD_ADR_PAGE21:
77a69ff8 6365 case BFD_RELOC_AARCH64_TLSLD_ADR_PREL21:
a06ea964
NC		 6366 if (! symbol_got_offset_mark_p (input_bfd, h, r_symndx))
6367 {
6368 bfd_boolean need_relocs = FALSE;
6369 bfd_byte *loc;
6370 int indx;
6371 bfd_vma off;
6372
6373 off = symbol_got_offset (input_bfd, h, r_symndx);
6374 indx = h && h->dynindx != -1 ? h->dynindx : 0;
6375
6376 need_relocs =
6dda7875 6377 (!bfd_link_executable (info) || indx != 0) &&
a06ea964
NC		 6378 (h == NULL
6379 || ELF_ST_VISIBILITY (h->other) == STV_DEFAULT
6380 || h->root.type != bfd_link_hash_undefweak);
6381
6382 BFD_ASSERT (globals->root.srelgot != NULL);
6383
6384 if (need_relocs)
6385 {
6386 Elf_Internal_Rela rela;
a6bb11b2 6387 rela.r_info = ELFNN_R_INFO (indx, AARCH64_R (TLS_DTPMOD));
a06ea964
NC		 6388 rela.r_addend = 0;
6389 rela.r_offset = globals->root.sgot->output_section->vma +
6390 globals->root.sgot->output_offset + off;
6391
6392
6393 loc = globals->root.srelgot->contents;
6394 loc += globals->root.srelgot->reloc_count++
6395 * RELOC_SIZE (htab);
cec5225b 6396 bfd_elfNN_swap_reloca_out (output_bfd, &rela, loc);
a06ea964 6397
f69e4920 6398 bfd_reloc_code_real_type real_type =
0aa13fee 6399 elfNN_aarch64_bfd_reloc_from_type (input_bfd, r_type);
f69e4920
JW		 6400
6401 if (real_type == BFD_RELOC_AARCH64_TLSLD_ADR_PREL21
73f925cc
JW		 6402 || real_type == BFD_RELOC_AARCH64_TLSLD_ADR_PAGE21
6403 || real_type == BFD_RELOC_AARCH64_TLSLD_ADD_LO12_NC)
77a69ff8
JW		 6404 {
6405 /* For local dynamic, don't generate DTPREL in any case.
6406 Initialize the DTPREL slot into zero, so we get module
6407 base address when invoke runtime TLS resolver. */
6408 bfd_put_NN (output_bfd, 0,
6409 globals->root.sgot->contents + off
6410 + GOT_ENTRY_SIZE);
6411 }
6412 else if (indx == 0)
a06ea964 6413 {
cec5225b 6414 bfd_put_NN (output_bfd,
a06ea964
NC		 6415 relocation - dtpoff_base (info),
6416 globals->root.sgot->contents + off
6417 + GOT_ENTRY_SIZE);
6418 }
6419 else
6420 {
6421 /* This TLS symbol is global. We emit a
6422 relocation to fixup the tls offset at load
6423 time. */
6424 rela.r_info =
a6bb11b2 6425 ELFNN_R_INFO (indx, AARCH64_R (TLS_DTPREL));
a06ea964
NC		 6426 rela.r_addend = 0;
6427 rela.r_offset =
6428 (globals->root.sgot->output_section->vma
6429 + globals->root.sgot->output_offset + off
6430 + GOT_ENTRY_SIZE);
6431
6432 loc = globals->root.srelgot->contents;
6433 loc += globals->root.srelgot->reloc_count++
6434 * RELOC_SIZE (globals);
cec5225b
YZ		 6435 bfd_elfNN_swap_reloca_out (output_bfd, &rela, loc);
6436 bfd_put_NN (output_bfd, (bfd_vma) 0,
a06ea964
NC		 6437 globals->root.sgot->contents + off
6438 + GOT_ENTRY_SIZE);
6439 }
6440 }
6441 else
6442 {
cec5225b 6443 bfd_put_NN (output_bfd, (bfd_vma) 1,
a06ea964 6444 globals->root.sgot->contents + off);
cec5225b 6445 bfd_put_NN (output_bfd,
a06ea964
NC		 6446 relocation - dtpoff_base (info),
6447 globals->root.sgot->contents + off
6448 + GOT_ENTRY_SIZE);
6449 }
6450
6451 symbol_got_offset_mark (input_bfd, h, r_symndx);
6452 }
6453 break;
6454
a6bb11b2
YZ		 6455 case BFD_RELOC_AARCH64_TLSIE_ADR_GOTTPREL_PAGE21:
6456 case BFD_RELOC_AARCH64_TLSIE_LDNN_GOTTPREL_LO12_NC:
043bf05a 6457 case BFD_RELOC_AARCH64_TLSIE_LD_GOTTPREL_PREL19:
3b957e5b
RL		 6458 case BFD_RELOC_AARCH64_TLSIE_MOVW_GOTTPREL_G0_NC:
6459 case BFD_RELOC_AARCH64_TLSIE_MOVW_GOTTPREL_G1:
a06ea964
NC		 6460 if (! symbol_got_offset_mark_p (input_bfd, h, r_symndx))
6461 {
6462 bfd_boolean need_relocs = FALSE;
6463 bfd_byte *loc;
6464 int indx;
6465 bfd_vma off;
6466
6467 off = symbol_got_offset (input_bfd, h, r_symndx);
6468
6469 indx = h && h->dynindx != -1 ? h->dynindx : 0;
6470
6471 need_relocs =
6dda7875 6472 (!bfd_link_executable (info) || indx != 0) &&
a06ea964
NC		 6473 (h == NULL
6474 || ELF_ST_VISIBILITY (h->other) == STV_DEFAULT
6475 || h->root.type != bfd_link_hash_undefweak);
6476
6477 BFD_ASSERT (globals->root.srelgot != NULL);
6478
6479 if (need_relocs)
6480 {
6481 Elf_Internal_Rela rela;
6482
6483 if (indx == 0)
6484 rela.r_addend = relocation - dtpoff_base (info);
6485 else
6486 rela.r_addend = 0;
6487
a6bb11b2 6488 rela.r_info = ELFNN_R_INFO (indx, AARCH64_R (TLS_TPREL));
a06ea964
NC		 6489 rela.r_offset = globals->root.sgot->output_section->vma +
6490 globals->root.sgot->output_offset + off;
6491
6492 loc = globals->root.srelgot->contents;
6493 loc += globals->root.srelgot->reloc_count++
6494 * RELOC_SIZE (htab);
6495
cec5225b 6496 bfd_elfNN_swap_reloca_out (output_bfd, &rela, loc);
a06ea964 6497
cec5225b 6498 bfd_put_NN (output_bfd, rela.r_addend,
a06ea964
NC		 6499 globals->root.sgot->contents + off);
6500 }
6501 else
cec5225b 6502 bfd_put_NN (output_bfd, relocation - tpoff_base (info),
a06ea964
NC		 6503 globals->root.sgot->contents + off);
6504
6505 symbol_got_offset_mark (input_bfd, h, r_symndx);
6506 }
6507 break;
6508
f955cccf 6509 case BFD_RELOC_AARCH64_TLSDESC_ADD_LO12:
a6bb11b2 6510 case BFD_RELOC_AARCH64_TLSDESC_ADR_PAGE21:
389b8029 6511 case BFD_RELOC_AARCH64_TLSDESC_ADR_PREL21:
a6bb11b2 6512 case BFD_RELOC_AARCH64_TLSDESC_LDNN_LO12_NC:
1ada945d 6513 case BFD_RELOC_AARCH64_TLSDESC_LD_PREL19:
0484b454
RL		 6514 case BFD_RELOC_AARCH64_TLSDESC_OFF_G0_NC:
6515 case BFD_RELOC_AARCH64_TLSDESC_OFF_G1:
a06ea964
NC		 6516 if (! symbol_tlsdesc_got_offset_mark_p (input_bfd, h, r_symndx))
6517 {
6518 bfd_boolean need_relocs = FALSE;
6519 int indx = h && h->dynindx != -1 ? h->dynindx : 0;
6520 bfd_vma off = symbol_tlsdesc_got_offset (input_bfd, h, r_symndx);
6521
6522 need_relocs = (h == NULL
6523 || ELF_ST_VISIBILITY (h->other) == STV_DEFAULT
6524 || h->root.type != bfd_link_hash_undefweak);
6525
6526 BFD_ASSERT (globals->root.srelgot != NULL);
6527 BFD_ASSERT (globals->root.sgot != NULL);
6528
6529 if (need_relocs)
6530 {
6531 bfd_byte *loc;
6532 Elf_Internal_Rela rela;
a6bb11b2
YZ		 6533 rela.r_info = ELFNN_R_INFO (indx, AARCH64_R (TLSDESC));
6534
a06ea964
NC		 6535 rela.r_addend = 0;
6536 rela.r_offset = (globals->root.sgotplt->output_section->vma
6537 + globals->root.sgotplt->output_offset
6538 + off + globals->sgotplt_jump_table_size);
6539
6540 if (indx == 0)
6541 rela.r_addend = relocation - dtpoff_base (info);
6542
6543 /* Allocate the next available slot in the PLT reloc
6544 section to hold our R_AARCH64_TLSDESC, the next
6545 available slot is determined from reloc_count,
6546 which we step. But note, reloc_count was
6547 artifically moved down while allocating slots for
6548 real PLT relocs such that all of the PLT relocs
6549 will fit above the initial reloc_count and the
6550 extra stuff will fit below. */
6551 loc = globals->root.srelplt->contents;
6552 loc += globals->root.srelplt->reloc_count++
6553 * RELOC_SIZE (globals);
6554
cec5225b 6555 bfd_elfNN_swap_reloca_out (output_bfd, &rela, loc);
a06ea964 6556
cec5225b 6557 bfd_put_NN (output_bfd, (bfd_vma) 0,
a06ea964
NC		 6558 globals->root.sgotplt->contents + off +
6559 globals->sgotplt_jump_table_size);
cec5225b 6560 bfd_put_NN (output_bfd, (bfd_vma) 0,
a06ea964
NC		 6561 globals->root.sgotplt->contents + off +
6562 globals->sgotplt_jump_table_size +
6563 GOT_ENTRY_SIZE);
6564 }
6565
6566 symbol_tlsdesc_got_offset_mark (input_bfd, h, r_symndx);
6567 }
6568 break;
a6bb11b2
YZ		 6569 default:
6570 break;
a06ea964
NC		 6571 }
6572
a06ea964 6573 /* Dynamic relocs are not propagated for SEC_DEBUGGING sections
07d6d2b8
AM		 6574 because such sections are not SEC_ALLOC and thus ld.so will
6575 not process them. */
a06ea964
NC		 6576 if (unresolved_reloc
6577 && !((input_section->flags & SEC_DEBUGGING) != 0
6578 && h->def_dynamic)
6579 && _bfd_elf_section_offset (output_bfd, info, input_section,
6580 +rel->r_offset) != (bfd_vma) - 1)
6581 {
4eca0228 6582 _bfd_error_handler
695344c0 6583 /* xgettext:c-format */
2dcf00ce
AM		 6584 (_("%pB(%pA+%#" PRIx64 "): "
6585 "unresolvable %s relocation against symbol `%s'"),
6586 input_bfd, input_section, (uint64_t) rel->r_offset, howto->name,
a06ea964
NC		 6587 h->root.root.string);
6588 return FALSE;
6589 }
6590
6591 if (r != bfd_reloc_ok && r != bfd_reloc_continue)
6592 {
c674f5cd 6593 bfd_reloc_code_real_type real_r_type
0aa13fee 6594 = elfNN_aarch64_bfd_reloc_from_type (input_bfd, r_type);
c674f5cd 6595
a06ea964
NC		 6596 switch (r)
6597 {
6598 case bfd_reloc_overflow:
1a72702b
AM		 6599 (*info->callbacks->reloc_overflow)
6600 (info, (h ? &h->root : NULL), name, howto->name, (bfd_vma) 0,
6601 input_bfd, input_section, rel->r_offset);
c674f5cd
JW		 6602 if (real_r_type == BFD_RELOC_AARCH64_LD64_GOTPAGE_LO15
6603 || real_r_type == BFD_RELOC_AARCH64_LD32_GOTPAGE_LO14)
6604 {
6605 (*info->callbacks->warning)
6606 (info,
90b6238f 6607 _("too many GOT entries for -fpic, "
c674f5cd
JW		 6608 "please recompile with -fPIC"),
6609 name, input_bfd, input_section, rel->r_offset);
6610 return FALSE;
6611 }
027e9c75
NC		 6612 /* Overflow can occur when a variable is referenced with a type
6613 that has a larger alignment than the type with which it was
6614 declared. eg:
6615 file1.c: extern int foo; int a (void) { return foo; }
6616 file2.c: char bar, foo, baz;
6617 If the variable is placed into a data section at an offset
6618 that is incompatible with the larger alignment requirement
6619 overflow will occur. (Strictly speaking this is not overflow
6620 but rather an alignment problem, but the bfd_reloc_ error
6621 enum does not have a value to cover that situation).
6622
6623 Try to catch this situation here and provide a more helpful
6624 error message to the user. */
6625 if (addend & ((1 << howto->rightshift) - 1)
6626 /* FIXME: Are we testing all of the appropriate reloc
6627 types here ? */
6628 && (real_r_type == BFD_RELOC_AARCH64_LD_LO19_PCREL
6629 || real_r_type == BFD_RELOC_AARCH64_LDST16_LO12
6630 || real_r_type == BFD_RELOC_AARCH64_LDST32_LO12
6631 || real_r_type == BFD_RELOC_AARCH64_LDST64_LO12
6632 || real_r_type == BFD_RELOC_AARCH64_LDST128_LO12))
6633 {
6634 info->callbacks->warning
90b6238f 6635 (info, _("one possible cause of this error is that the \
027e9c75 6636symbol is being referenced in the indicated code as if it had a larger \
90b6238f 6637alignment than was declared where it was defined"),
027e9c75
NC		 6638 name, input_bfd, input_section, rel->r_offset);
6639 }
a06ea964
NC		 6640 break;
6641
6642 case bfd_reloc_undefined:
1a72702b
AM		 6643 (*info->callbacks->undefined_symbol)
6644 (info, name, input_bfd, input_section, rel->r_offset, TRUE);
a06ea964
NC		 6645 break;
6646
6647 case bfd_reloc_outofrange:
6648 error_message = _("out of range");
6649 goto common_error;
6650
6651 case bfd_reloc_notsupported:
6652 error_message = _("unsupported relocation");
6653 goto common_error;
6654
6655 case bfd_reloc_dangerous:
6656 /* error_message should already be set. */
6657 goto common_error;
6658
6659 default:
6660 error_message = _("unknown error");
6661 /* Fall through. */
6662
6663 common_error:
6664 BFD_ASSERT (error_message != NULL);
1a72702b
AM		 6665 (*info->callbacks->reloc_dangerous)
6666 (info, error_message, input_bfd, input_section, rel->r_offset);
a06ea964
NC		 6667 break;
6668 }
6669 }
027e9c75
NC		 6670
6671 if (!save_addend)
6672 addend = 0;
a06ea964
NC		 6673 }
6674
6675 return TRUE;
6676}
6677
6678/* Set the right machine number. */
6679
6680static bfd_boolean
cec5225b 6681elfNN_aarch64_object_p (bfd *abfd)
a06ea964 6682{
cec5225b
YZ		 6683#if ARCH_SIZE == 32
6684 bfd_default_set_arch_mach (abfd, bfd_arch_aarch64, bfd_mach_aarch64_ilp32);
6685#else
a06ea964 6686 bfd_default_set_arch_mach (abfd, bfd_arch_aarch64, bfd_mach_aarch64);
cec5225b 6687#endif
a06ea964
NC		 6688 return TRUE;
6689}
6690
6691/* Function to keep AArch64 specific flags in the ELF header. */
6692
6693static bfd_boolean
cec5225b 6694elfNN_aarch64_set_private_flags (bfd *abfd, flagword flags)
a06ea964
NC		 6695{
6696 if (elf_flags_init (abfd) && elf_elfheader (abfd)->e_flags != flags)
6697 {
6698 }
6699 else
6700 {
6701 elf_elfheader (abfd)->e_flags = flags;
6702 elf_flags_init (abfd) = TRUE;
6703 }
6704
6705 return TRUE;
6706}
6707
a06ea964
NC		 6708/* Merge backend specific data from an object file to the output
6709 object file when linking. */
6710
6711static bfd_boolean
50e03d47 6712elfNN_aarch64_merge_private_bfd_data (bfd *ibfd, struct bfd_link_info *info)
a06ea964 6713{
50e03d47 6714 bfd *obfd = info->output_bfd;
a06ea964
NC		 6715 flagword out_flags;
6716 flagword in_flags;
6717 bfd_boolean flags_compatible = TRUE;
6718 asection *sec;
6719
6720 /* Check if we have the same endianess. */
50e03d47 6721 if (!_bfd_generic_verify_endian_match (ibfd, info))
a06ea964
NC		 6722 return FALSE;
6723
6724 if (!is_aarch64_elf (ibfd) || !is_aarch64_elf (obfd))
6725 return TRUE;
6726
6727 /* The input BFD must have had its flags initialised. */
6728 /* The following seems bogus to me -- The flags are initialized in
6729 the assembler but I don't think an elf_flags_init field is
6730 written into the object. */
6731 /* BFD_ASSERT (elf_flags_init (ibfd)); */
6732
6733 in_flags = elf_elfheader (ibfd)->e_flags;
6734 out_flags = elf_elfheader (obfd)->e_flags;
6735
6736 if (!elf_flags_init (obfd))
6737 {
6738 /* If the input is the default architecture and had the default
07d6d2b8
AM		 6739 flags then do not bother setting the flags for the output
6740 architecture, instead allow future merges to do this. If no
6741 future merges ever set these flags then they will retain their
6742 uninitialised values, which surprise surprise, correspond
6743 to the default values. */
a06ea964
NC		 6744 if (bfd_get_arch_info (ibfd)->the_default
6745 && elf_elfheader (ibfd)->e_flags == 0)
6746 return TRUE;
6747
6748 elf_flags_init (obfd) = TRUE;
6749 elf_elfheader (obfd)->e_flags = in_flags;
6750
6751 if (bfd_get_arch (obfd) == bfd_get_arch (ibfd)
6752 && bfd_get_arch_info (obfd)->the_default)
6753 return bfd_set_arch_mach (obfd, bfd_get_arch (ibfd),
6754 bfd_get_mach (ibfd));
6755
6756 return TRUE;
6757 }
6758
6759 /* Identical flags must be compatible. */
6760 if (in_flags == out_flags)
6761 return TRUE;
6762
6763 /* Check to see if the input BFD actually contains any sections. If
6764 not, its flags may not have been initialised either, but it
6765 cannot actually cause any incompatiblity. Do not short-circuit
6766 dynamic objects; their section list may be emptied by
6767 elf_link_add_object_symbols.
6768
6769 Also check to see if there are no code sections in the input.
6770 In this case there is no need to check for code specific flags.
6771 XXX - do we need to worry about floating-point format compatability
6772 in data sections ? */
6773 if (!(ibfd->flags & DYNAMIC))
6774 {
6775 bfd_boolean null_input_bfd = TRUE;
6776 bfd_boolean only_data_sections = TRUE;
6777
6778 for (sec = ibfd->sections; sec != NULL; sec = sec->next)
6779 {
6780 if ((bfd_get_section_flags (ibfd, sec)
6781 & (SEC_LOAD | SEC_CODE | SEC_HAS_CONTENTS))
6782 == (SEC_LOAD | SEC_CODE | SEC_HAS_CONTENTS))
6783 only_data_sections = FALSE;
6784
6785 null_input_bfd = FALSE;
6786 break;
6787 }
6788
6789 if (null_input_bfd || only_data_sections)
6790 return TRUE;
6791 }
6792
6793 return flags_compatible;
6794}
6795
6796/* Display the flags field. */
6797
6798static bfd_boolean
cec5225b 6799elfNN_aarch64_print_private_bfd_data (bfd *abfd, void *ptr)
a06ea964
NC		 6800{
6801 FILE *file = (FILE *) ptr;
6802 unsigned long flags;
6803
6804 BFD_ASSERT (abfd != NULL && ptr != NULL);
6805
6806 /* Print normal ELF private data. */
6807 _bfd_elf_print_private_bfd_data (abfd, ptr);
6808
6809 flags = elf_elfheader (abfd)->e_flags;
6810 /* Ignore init flag - it may not be set, despite the flags field
6811 containing valid data. */
6812
6813 /* xgettext:c-format */
6814 fprintf (file, _("private flags = %lx:"), elf_elfheader (abfd)->e_flags);
6815
6816 if (flags)
6817 fprintf (file, _("<Unrecognised flag bits set>"));
6818
6819 fputc ('\n', file);
6820
6821 return TRUE;
6822}
6823
63c1f59d
AM		 6824/* Find dynamic relocs for H that apply to read-only sections. */
6825
6826static asection *
6827readonly_dynrelocs (struct elf_link_hash_entry *h)
6828{
6829 struct elf_dyn_relocs *p;
6830
6831 for (p = elf_aarch64_hash_entry (h)->dyn_relocs; p != NULL; p = p->next)
6832 {
6833 asection *s = p->sec->output_section;
6834
6835 if (s != NULL && (s->flags & SEC_READONLY) != 0)
6836 return p->sec;
6837 }
6838 return NULL;
6839}
6840
6353d82b
JW		 6841/* Return true if we need copy relocation against EH. */
6842
6843static bfd_boolean
6844need_copy_relocation_p (struct elf_aarch64_link_hash_entry *eh)
6845{
6846 struct elf_dyn_relocs *p;
6847 asection *s;
6848
6849 for (p = eh->dyn_relocs; p != NULL; p = p->next)
6850 {
6851 /* If there is any pc-relative reference, we need to keep copy relocation
6852 to avoid propagating the relocation into runtime that current glibc
6853 does not support. */
6854 if (p->pc_count)
6855 return TRUE;
6856
6857 s = p->sec->output_section;
6858 /* Need copy relocation if it's against read-only section. */
6859 if (s != NULL && (s->flags & SEC_READONLY) != 0)
6860 return TRUE;
6861 }
6862
6863 return FALSE;
6864}
6865
a06ea964
NC		 6866/* Adjust a symbol defined by a dynamic object and referenced by a
6867 regular object. The current definition is in some section of the
6868 dynamic object, but we're not including those sections. We have to
6869 change the definition to something the rest of the link can
6870 understand. */
6871
6872static bfd_boolean
cec5225b 6873elfNN_aarch64_adjust_dynamic_symbol (struct bfd_link_info *info,
a06ea964
NC		 6874 struct elf_link_hash_entry *h)
6875{
cec5225b 6876 struct elf_aarch64_link_hash_table *htab;
5474d94f 6877 asection *s, *srel;
a06ea964
NC		 6878
6879 /* If this is a function, put it in the procedure linkage table. We
6880 will fill in the contents of the procedure linkage table later,
6881 when we know the address of the .got section. */
1419bbe5 6882 if (h->type == STT_FUNC || h->type == STT_GNU_IFUNC || h->needs_plt)
a06ea964
NC		 6883 {
6884 if (h->plt.refcount <= 0
1419bbe5
WN		 6885 || (h->type != STT_GNU_IFUNC
6886 && (SYMBOL_CALLS_LOCAL (info, h)
6887 || (ELF_ST_VISIBILITY (h->other) != STV_DEFAULT
6888 && h->root.type == bfd_link_hash_undefweak))))
a06ea964
NC		 6889 {
6890 /* This case can occur if we saw a CALL26 reloc in
6891 an input file, but the symbol wasn't referred to
6892 by a dynamic object or all references were
6893 garbage collected. In which case we can end up
6894 resolving. */
6895 h->plt.offset = (bfd_vma) - 1;
6896 h->needs_plt = 0;
6897 }
6898
6899 return TRUE;
6900 }
6901 else
80de0c6d 6902 /* Otherwise, reset to -1. */
a06ea964
NC		 6903 h->plt.offset = (bfd_vma) - 1;
6904
6905
6906 /* If this is a weak symbol, and there is a real definition, the
6907 processor independent code will have arranged for us to see the
6908 real definition first, and we can just use the same value. */
60d67dc8 6909 if (h->is_weakalias)
a06ea964 6910 {
60d67dc8
AM		 6911 struct elf_link_hash_entry *def = weakdef (h);
6912 BFD_ASSERT (def->root.type == bfd_link_hash_defined);
6913 h->root.u.def.section = def->root.u.def.section;
6914 h->root.u.def.value = def->root.u.def.value;
a06ea964 6915 if (ELIMINATE_COPY_RELOCS || info->nocopyreloc)
60d67dc8 6916 h->non_got_ref = def->non_got_ref;
a06ea964
NC		 6917 return TRUE;
6918 }
6919
6920 /* If we are creating a shared library, we must presume that the
6921 only references to the symbol are via the global offset table.
6922 For such cases we need not do anything here; the relocations will
6923 be handled correctly by relocate_section. */
0e1862bb 6924 if (bfd_link_pic (info))
a06ea964
NC		 6925 return TRUE;
6926
6927 /* If there are no references to this symbol that do not use the
6928 GOT, we don't need to generate a copy reloc. */
6929 if (!h->non_got_ref)
6930 return TRUE;
6931
6932 /* If -z nocopyreloc was given, we won't generate them either. */
6933 if (info->nocopyreloc)
6934 {
6935 h->non_got_ref = 0;
6936 return TRUE;
6937 }
6938
6353d82b
JW		 6939 if (ELIMINATE_COPY_RELOCS)
6940 {
6941 struct elf_aarch64_link_hash_entry *eh;
dce2246a 6942 /* If we don't find any dynamic relocs in read-only sections, then
6353d82b
JW		 6943 we'll be keeping the dynamic relocs and avoiding the copy reloc. */
6944 eh = (struct elf_aarch64_link_hash_entry *) h;
6945 if (!need_copy_relocation_p (eh))
6946 {
6947 h->non_got_ref = 0;
6948 return TRUE;
6949 }
6950 }
6951
a06ea964
NC		 6952 /* We must allocate the symbol in our .dynbss section, which will
6953 become part of the .bss section of the executable. There will be
6954 an entry for this symbol in the .dynsym section. The dynamic
6955 object will contain position independent code, so all references
6956 from the dynamic object to this symbol will go through the global
6957 offset table. The dynamic linker will use the .dynsym entry to
6958 determine the address it must put in the global offset table, so
6959 both the dynamic object and the regular object will refer to the
6960 same memory location for the variable. */
6961
cec5225b 6962 htab = elf_aarch64_hash_table (info);
a06ea964
NC		 6963
6964 /* We must generate a R_AARCH64_COPY reloc to tell the dynamic linker
6965 to copy the initial value out of the dynamic object and into the
6966 runtime process image. */
5474d94f
AM		 6967 if ((h->root.u.def.section->flags & SEC_READONLY) != 0)
6968 {
6969 s = htab->root.sdynrelro;
6970 srel = htab->root.sreldynrelro;
6971 }
6972 else
6973 {
6974 s = htab->root.sdynbss;
6975 srel = htab->root.srelbss;
6976 }
a06ea964
NC		 6977 if ((h->root.u.def.section->flags & SEC_ALLOC) != 0 && h->size != 0)
6978 {
5474d94f 6979 srel->size += RELOC_SIZE (htab);
a06ea964
NC		 6980 h->needs_copy = 1;
6981 }
6982
6cabe1ea 6983 return _bfd_elf_adjust_dynamic_copy (info, h, s);
a06ea964
NC		 6984
6985}
6986
6987static bfd_boolean
cec5225b 6988elfNN_aarch64_allocate_local_symbols (bfd *abfd, unsigned number)
a06ea964
NC		 6989{
6990 struct elf_aarch64_local_symbol *locals;
cec5225b 6991 locals = elf_aarch64_locals (abfd);
a06ea964
NC		 6992 if (locals == NULL)
6993 {
6994 locals = (struct elf_aarch64_local_symbol *)
6995 bfd_zalloc (abfd, number * sizeof (struct elf_aarch64_local_symbol));
6996 if (locals == NULL)
6997 return FALSE;
cec5225b 6998 elf_aarch64_locals (abfd) = locals;
a06ea964
NC		 6999 }
7000 return TRUE;
7001}
7002
cc0efaa8
MS		 7003/* Create the .got section to hold the global offset table. */
7004
7005static bfd_boolean
7006aarch64_elf_create_got_section (bfd *abfd, struct bfd_link_info *info)
7007{
7008 const struct elf_backend_data *bed = get_elf_backend_data (abfd);
7009 flagword flags;
7010 asection *s;
7011 struct elf_link_hash_entry *h;
7012 struct elf_link_hash_table *htab = elf_hash_table (info);
7013
7014 /* This function may be called more than once. */
ce558b89 7015 if (htab->sgot != NULL)
cc0efaa8
MS		 7016 return TRUE;
7017
7018 flags = bed->dynamic_sec_flags;
7019
7020 s = bfd_make_section_anyway_with_flags (abfd,
7021 (bed->rela_plts_and_copies_p
7022 ? ".rela.got" : ".rel.got"),
7023 (bed->dynamic_sec_flags
7024 | SEC_READONLY));
7025 if (s == NULL
7026 || ! bfd_set_section_alignment (abfd, s, bed->s->log_file_align))
7027 return FALSE;
7028 htab->srelgot = s;
7029
7030 s = bfd_make_section_anyway_with_flags (abfd, ".got", flags);
7031 if (s == NULL
7032 || !bfd_set_section_alignment (abfd, s, bed->s->log_file_align))
7033 return FALSE;
7034 htab->sgot = s;
7035 htab->sgot->size += GOT_ENTRY_SIZE;
7036
7037 if (bed->want_got_sym)
7038 {
7039 /* Define the symbol _GLOBAL_OFFSET_TABLE_ at the start of the .got
7040 (or .got.plt) section. We don't do this in the linker script
7041 because we don't want to define the symbol if we are not creating
7042 a global offset table. */
7043 h = _bfd_elf_define_linkage_sym (abfd, info, s,
7044 "_GLOBAL_OFFSET_TABLE_");
7045 elf_hash_table (info)->hgot = h;
7046 if (h == NULL)
7047 return FALSE;
7048 }
7049
7050 if (bed->want_got_plt)
7051 {
7052 s = bfd_make_section_anyway_with_flags (abfd, ".got.plt", flags);
7053 if (s == NULL
7054 || !bfd_set_section_alignment (abfd, s,
7055 bed->s->log_file_align))
7056 return FALSE;
7057 htab->sgotplt = s;
7058 }
7059
7060 /* The first bit of the global offset table is the header. */
7061 s->size += bed->got_header_size;
7062
7063 return TRUE;
7064}
7065
a06ea964
NC		 7066/* Look through the relocs for a section during the first phase. */
7067
7068static bfd_boolean
cec5225b 7069elfNN_aarch64_check_relocs (bfd *abfd, struct bfd_link_info *info,
a06ea964
NC		 7070 asection *sec, const Elf_Internal_Rela *relocs)
7071{
7072 Elf_Internal_Shdr *symtab_hdr;
7073 struct elf_link_hash_entry **sym_hashes;
7074 const Elf_Internal_Rela *rel;
7075 const Elf_Internal_Rela *rel_end;
7076 asection *sreloc;
7077
cec5225b 7078 struct elf_aarch64_link_hash_table *htab;
a06ea964 7079
0e1862bb 7080 if (bfd_link_relocatable (info))
a06ea964
NC		 7081 return TRUE;
7082
7083 BFD_ASSERT (is_aarch64_elf (abfd));
7084
cec5225b 7085 htab = elf_aarch64_hash_table (info);
a06ea964
NC		 7086 sreloc = NULL;
7087
7088 symtab_hdr = &elf_symtab_hdr (abfd);
7089 sym_hashes = elf_sym_hashes (abfd);
a06ea964
NC		 7090
7091 rel_end = relocs + sec->reloc_count;
7092 for (rel = relocs; rel < rel_end; rel++)
7093 {
7094 struct elf_link_hash_entry *h;
d42c267e 7095 unsigned int r_symndx;
a06ea964 7096 unsigned int r_type;
a6bb11b2 7097 bfd_reloc_code_real_type bfd_r_type;
1419bbe5 7098 Elf_Internal_Sym *isym;
a06ea964 7099
cec5225b
YZ		 7100 r_symndx = ELFNN_R_SYM (rel->r_info);
7101 r_type = ELFNN_R_TYPE (rel->r_info);
a06ea964
NC		 7102
7103 if (r_symndx >= NUM_SHDR_ENTRIES (symtab_hdr))
7104 {
695344c0 7105 /* xgettext:c-format */
871b3ab2 7106 _bfd_error_handler (_("%pB: bad symbol index: %d"), abfd, r_symndx);
a06ea964
NC		 7107 return FALSE;
7108 }
7109
ed5acf27 7110 if (r_symndx < symtab_hdr->sh_info)
1419bbe5
WN		 7111 {
7112 /* A local symbol. */
7113 isym = bfd_sym_from_r_symndx (&htab->sym_cache,
7114 abfd, r_symndx);
7115 if (isym == NULL)
7116 return FALSE;
7117
7118 /* Check relocation against local STT_GNU_IFUNC symbol. */
7119 if (ELF_ST_TYPE (isym->st_info) == STT_GNU_IFUNC)
7120 {
7121 h = elfNN_aarch64_get_local_sym_hash (htab, abfd, rel,
7122 TRUE);
7123 if (h == NULL)
7124 return FALSE;
7125
7126 /* Fake a STT_GNU_IFUNC symbol. */
7127 h->type = STT_GNU_IFUNC;
7128 h->def_regular = 1;
7129 h->ref_regular = 1;
7130 h->forced_local = 1;
7131 h->root.type = bfd_link_hash_defined;
7132 }
7133 else
7134 h = NULL;
7135 }
a06ea964
NC		 7136 else
7137 {
7138 h = sym_hashes[r_symndx - symtab_hdr->sh_info];
7139 while (h->root.type == bfd_link_hash_indirect
7140 || h->root.type == bfd_link_hash_warning)
7141 h = (struct elf_link_hash_entry *) h->root.u.i.link;
7142 }
7143
7144 /* Could be done earlier, if h were already available. */
a6bb11b2 7145 bfd_r_type = aarch64_tls_transition (abfd, info, r_type, h, r_symndx);
a06ea964 7146
1419bbe5
WN		 7147 if (h != NULL)
7148 {
18f822a0
JW		 7149 /* If a relocation refers to _GLOBAL_OFFSET_TABLE_, create the .got.
7150 This shows up in particular in an R_AARCH64_PREL64 in large model
7151 when calculating the pc-relative address to .got section which is
7152 used to initialize the gp register. */
7153 if (h->root.root.string
7154 && strcmp (h->root.root.string, "_GLOBAL_OFFSET_TABLE_") == 0)
7155 {
7156 if (htab->root.dynobj == NULL)
7157 htab->root.dynobj = abfd;
7158
7159 if (! aarch64_elf_create_got_section (htab->root.dynobj, info))
7160 return FALSE;
7161
7162 BFD_ASSERT (h == htab->root.hgot);
7163 }
7164
1419bbe5
WN		 7165 /* Create the ifunc sections for static executables. If we
7166 never see an indirect function symbol nor we are building
7167 a static executable, those sections will be empty and
7168 won't appear in output. */
7169 switch (bfd_r_type)
7170 {
7171 default:
7172 break;
7173
ce336788
JW		 7174 case BFD_RELOC_AARCH64_ADD_LO12:
7175 case BFD_RELOC_AARCH64_ADR_GOT_PAGE:
7176 case BFD_RELOC_AARCH64_ADR_HI21_PCREL:
1419bbe5 7177 case BFD_RELOC_AARCH64_CALL26:
ce336788 7178 case BFD_RELOC_AARCH64_GOT_LD_PREL19:
1419bbe5 7179 case BFD_RELOC_AARCH64_JUMP26:
7018c030 7180 case BFD_RELOC_AARCH64_LD32_GOTPAGE_LO14:
1419bbe5 7181 case BFD_RELOC_AARCH64_LD32_GOT_LO12_NC:
a2e1db00 7182 case BFD_RELOC_AARCH64_LD64_GOTOFF_LO15:
99ad26cb 7183 case BFD_RELOC_AARCH64_LD64_GOTPAGE_LO15:
1419bbe5 7184 case BFD_RELOC_AARCH64_LD64_GOT_LO12_NC:
dc8008f5 7185 case BFD_RELOC_AARCH64_MOVW_GOTOFF_G0_NC:
74a1bfe1 7186 case BFD_RELOC_AARCH64_MOVW_GOTOFF_G1:
ce336788 7187 case BFD_RELOC_AARCH64_NN:
1419bbe5
WN		 7188 if (htab->root.dynobj == NULL)
7189 htab->root.dynobj = abfd;
7190 if (!_bfd_elf_create_ifunc_sections (htab->root.dynobj, info))
7191 return FALSE;
7192 break;
7193 }
7194
2d0ca824 7195 /* It is referenced by a non-shared object. */
1419bbe5 7196 h->ref_regular = 1;
1419bbe5
WN		 7197 }
7198
a6bb11b2 7199 switch (bfd_r_type)
a06ea964 7200 {
79e74192
RL		 7201 case BFD_RELOC_AARCH64_16:
7202#if ARCH_SIZE == 64
7203 case BFD_RELOC_AARCH64_32:
7204#endif
279b2f94 7205 if (bfd_link_pic (info) && (sec->flags & SEC_ALLOC) != 0)
79e74192 7206 {
279b2f94
RL		 7207 if (h != NULL
7208 /* This is an absolute symbol. It represents a value instead
7209 of an address. */
7210 && ((h->root.type == bfd_link_hash_defined
7211 && bfd_is_abs_section (h->root.u.def.section))
7212 /* This is an undefined symbol. */
7213 || h->root.type == bfd_link_hash_undefined))
7214 break;
7215
7216 /* For local symbols, defined global symbols in a non-ABS section,
7217 it is assumed that the value is an address. */
79e74192
RL		 7218 int howto_index = bfd_r_type - BFD_RELOC_AARCH64_RELOC_START;
7219 _bfd_error_handler
7220 /* xgettext:c-format */
871b3ab2 7221 (_("%pB: relocation %s against `%s' can not be used when making "
79e74192
RL		 7222 "a shared object"),
7223 abfd, elfNN_aarch64_howto_table[howto_index].name,
7224 (h) ? h->root.root.string : "a local symbol");
7225 bfd_set_error (bfd_error_bad_value);
7226 return FALSE;
7227 }
7228 else
7229 break;
7230
6353d82b
JW		 7231 case BFD_RELOC_AARCH64_MOVW_G0_NC:
7232 case BFD_RELOC_AARCH64_MOVW_G1_NC:
7233 case BFD_RELOC_AARCH64_MOVW_G2_NC:
7234 case BFD_RELOC_AARCH64_MOVW_G3:
7235 if (bfd_link_pic (info))
7236 {
7237 int howto_index = bfd_r_type - BFD_RELOC_AARCH64_RELOC_START;
7238 _bfd_error_handler
7239 /* xgettext:c-format */
871b3ab2 7240 (_("%pB: relocation %s against `%s' can not be used when making "
6353d82b
JW		 7241 "a shared object; recompile with -fPIC"),
7242 abfd, elfNN_aarch64_howto_table[howto_index].name,
7243 (h) ? h->root.root.string : "a local symbol");
7244 bfd_set_error (bfd_error_bad_value);
7245 return FALSE;
7246 }
7247 /* Fall through. */
7248
7249 case BFD_RELOC_AARCH64_16_PCREL:
7250 case BFD_RELOC_AARCH64_32_PCREL:
7251 case BFD_RELOC_AARCH64_64_PCREL:
7252 case BFD_RELOC_AARCH64_ADD_LO12:
7253 case BFD_RELOC_AARCH64_ADR_HI21_NC_PCREL:
7254 case BFD_RELOC_AARCH64_ADR_HI21_PCREL:
7255 case BFD_RELOC_AARCH64_ADR_LO21_PCREL:
7256 case BFD_RELOC_AARCH64_LDST128_LO12:
7257 case BFD_RELOC_AARCH64_LDST16_LO12:
7258 case BFD_RELOC_AARCH64_LDST32_LO12:
7259 case BFD_RELOC_AARCH64_LDST64_LO12:
7260 case BFD_RELOC_AARCH64_LDST8_LO12:
7261 case BFD_RELOC_AARCH64_LD_LO19_PCREL:
7262 if (h == NULL || bfd_link_pic (info))
7263 break;
7264 /* Fall through. */
7265
a6bb11b2 7266 case BFD_RELOC_AARCH64_NN:
a06ea964
NC		 7267
7268 /* We don't need to handle relocs into sections not going into
7269 the "real" output. */
7270 if ((sec->flags & SEC_ALLOC) == 0)
7271 break;
7272
7273 if (h != NULL)
7274 {
0e1862bb 7275 if (!bfd_link_pic (info))
a06ea964
NC		 7276 h->non_got_ref = 1;
7277
7278 h->plt.refcount += 1;
7279 h->pointer_equality_needed = 1;
7280 }
7281
7282 /* No need to do anything if we're not creating a shared
7283 object. */
6353d82b
JW		 7284 if (!(bfd_link_pic (info)
7285 /* If on the other hand, we are creating an executable, we
7286 may need to keep relocations for symbols satisfied by a
7287 dynamic library if we manage to avoid copy relocs for the
7288 symbol.
7289
7290 NOTE: Currently, there is no support of copy relocs
7291 elimination on pc-relative relocation types, because there is
7292 no dynamic relocation support for them in glibc. We still
7293 record the dynamic symbol reference for them. This is
7294 because one symbol may be referenced by both absolute
7295 relocation (for example, BFD_RELOC_AARCH64_NN) and
7296 pc-relative relocation. We need full symbol reference
7297 information to make correct decision later in
7298 elfNN_aarch64_adjust_dynamic_symbol. */
7299 || (ELIMINATE_COPY_RELOCS
7300 && !bfd_link_pic (info)
7301 && h != NULL
7302 && (h->root.type == bfd_link_hash_defweak
7303 || !h->def_regular))))
a06ea964
NC		 7304 break;
7305
7306 {
7307 struct elf_dyn_relocs *p;
7308 struct elf_dyn_relocs **head;
6353d82b 7309 int howto_index = bfd_r_type - BFD_RELOC_AARCH64_RELOC_START;
a06ea964
NC		 7310
7311 /* We must copy these reloc types into the output file.
7312 Create a reloc section in dynobj and make room for
7313 this reloc. */
7314 if (sreloc == NULL)
7315 {
7316 if (htab->root.dynobj == NULL)
7317 htab->root.dynobj = abfd;
7318
7319 sreloc = _bfd_elf_make_dynamic_reloc_section
0608afa7 7320 (sec, htab->root.dynobj, LOG_FILE_ALIGN, abfd, /*rela? */ TRUE);
a06ea964
NC		 7321
7322 if (sreloc == NULL)
7323 return FALSE;
7324 }
7325
7326 /* If this is a global symbol, we count the number of
7327 relocations we need for this symbol. */
7328 if (h != NULL)
7329 {
cec5225b
YZ		 7330 struct elf_aarch64_link_hash_entry *eh;
7331 eh = (struct elf_aarch64_link_hash_entry *) h;
a06ea964
NC		 7332 head = &eh->dyn_relocs;
7333 }
7334 else
7335 {
7336 /* Track dynamic relocs needed for local syms too.
7337 We really need local syms available to do this
7338 easily. Oh well. */
7339
7340 asection *s;
7341 void **vpp;
a06ea964
NC		 7342
7343 isym = bfd_sym_from_r_symndx (&htab->sym_cache,
7344 abfd, r_symndx);
7345 if (isym == NULL)
7346 return FALSE;
7347
7348 s = bfd_section_from_elf_index (abfd, isym->st_shndx);
7349 if (s == NULL)
7350 s = sec;
7351
7352 /* Beware of type punned pointers vs strict aliasing
7353 rules. */
7354 vpp = &(elf_section_data (s)->local_dynrel);
7355 head = (struct elf_dyn_relocs **) vpp;
7356 }
7357
7358 p = *head;
7359 if (p == NULL || p->sec != sec)
7360 {
7361 bfd_size_type amt = sizeof *p;
7362 p = ((struct elf_dyn_relocs *)
7363 bfd_zalloc (htab->root.dynobj, amt));
7364 if (p == NULL)
7365 return FALSE;
7366 p->next = *head;
7367 *head = p;
7368 p->sec = sec;
7369 }
7370
7371 p->count += 1;
7372
6353d82b
JW		 7373 if (elfNN_aarch64_howto_table[howto_index].pc_relative)
7374 p->pc_count += 1;
a06ea964
NC		 7375 }
7376 break;
7377
7378 /* RR: We probably want to keep a consistency check that
7379 there are no dangling GOT_PAGE relocs. */
a6bb11b2 7380 case BFD_RELOC_AARCH64_ADR_GOT_PAGE:
7bcccb57 7381 case BFD_RELOC_AARCH64_GOT_LD_PREL19:
7018c030 7382 case BFD_RELOC_AARCH64_LD32_GOTPAGE_LO14:
7bcccb57 7383 case BFD_RELOC_AARCH64_LD32_GOT_LO12_NC:
a2e1db00 7384 case BFD_RELOC_AARCH64_LD64_GOTOFF_LO15:
99ad26cb 7385 case BFD_RELOC_AARCH64_LD64_GOTPAGE_LO15:
7bcccb57 7386 case BFD_RELOC_AARCH64_LD64_GOT_LO12_NC:
dc8008f5 7387 case BFD_RELOC_AARCH64_MOVW_GOTOFF_G0_NC:
74a1bfe1 7388 case BFD_RELOC_AARCH64_MOVW_GOTOFF_G1:
f955cccf 7389 case BFD_RELOC_AARCH64_TLSDESC_ADD_LO12:
7bcccb57 7390 case BFD_RELOC_AARCH64_TLSDESC_ADR_PAGE21:
389b8029 7391 case BFD_RELOC_AARCH64_TLSDESC_ADR_PREL21:
7bcccb57 7392 case BFD_RELOC_AARCH64_TLSDESC_LD32_LO12_NC:
f955cccf 7393 case BFD_RELOC_AARCH64_TLSDESC_LD64_LO12:
1ada945d 7394 case BFD_RELOC_AARCH64_TLSDESC_LD_PREL19:
0484b454
RL		 7395 case BFD_RELOC_AARCH64_TLSDESC_OFF_G0_NC:
7396 case BFD_RELOC_AARCH64_TLSDESC_OFF_G1:
a6bb11b2 7397 case BFD_RELOC_AARCH64_TLSGD_ADD_LO12_NC:
7bcccb57 7398 case BFD_RELOC_AARCH64_TLSGD_ADR_PAGE21:
3c12b054 7399 case BFD_RELOC_AARCH64_TLSGD_ADR_PREL21:
7ba7cfe4 7400 case BFD_RELOC_AARCH64_TLSGD_MOVW_G0_NC:
94facae3 7401 case BFD_RELOC_AARCH64_TLSGD_MOVW_G1:
a6bb11b2 7402 case BFD_RELOC_AARCH64_TLSIE_ADR_GOTTPREL_PAGE21:
a6bb11b2 7403 case BFD_RELOC_AARCH64_TLSIE_LD32_GOTTPREL_LO12_NC:
7bcccb57 7404 case BFD_RELOC_AARCH64_TLSIE_LD64_GOTTPREL_LO12_NC:
043bf05a 7405 case BFD_RELOC_AARCH64_TLSIE_LD_GOTTPREL_PREL19:
3b957e5b
RL		 7406 case BFD_RELOC_AARCH64_TLSIE_MOVW_GOTTPREL_G0_NC:
7407 case BFD_RELOC_AARCH64_TLSIE_MOVW_GOTTPREL_G1:
73f925cc 7408 case BFD_RELOC_AARCH64_TLSLD_ADD_LO12_NC:
f69e4920 7409 case BFD_RELOC_AARCH64_TLSLD_ADR_PAGE21:
77a69ff8 7410 case BFD_RELOC_AARCH64_TLSLD_ADR_PREL21:
b7a944fe
RL		 7411 case BFD_RELOC_AARCH64_TLSLE_MOVW_TPREL_G1:
7412 case BFD_RELOC_AARCH64_TLSLE_MOVW_TPREL_G1_NC:
7413 case BFD_RELOC_AARCH64_TLSLE_MOVW_TPREL_G2:
a06ea964
NC		 7414 {
7415 unsigned got_type;
7416 unsigned old_got_type;
7417
a6bb11b2 7418 got_type = aarch64_reloc_got_type (bfd_r_type);
a06ea964
NC		 7419
7420 if (h)
7421 {
7422 h->got.refcount += 1;
cec5225b 7423 old_got_type = elf_aarch64_hash_entry (h)->got_type;
a06ea964
NC		 7424 }
7425 else
7426 {
7427 struct elf_aarch64_local_symbol *locals;
7428
cec5225b 7429 if (!elfNN_aarch64_allocate_local_symbols
a06ea964
NC		 7430 (abfd, symtab_hdr->sh_info))
7431 return FALSE;
7432
cec5225b 7433 locals = elf_aarch64_locals (abfd);
a06ea964
NC		 7434 BFD_ASSERT (r_symndx < symtab_hdr->sh_info);
7435 locals[r_symndx].got_refcount += 1;
7436 old_got_type = locals[r_symndx].got_type;
7437 }
7438
7439 /* If a variable is accessed with both general dynamic TLS
7440 methods, two slots may be created. */
7441 if (GOT_TLS_GD_ANY_P (old_got_type) && GOT_TLS_GD_ANY_P (got_type))
7442 got_type |= old_got_type;
7443
7444 /* We will already have issued an error message if there
7445 is a TLS/non-TLS mismatch, based on the symbol type.
7446 So just combine any TLS types needed. */
7447 if (old_got_type != GOT_UNKNOWN && old_got_type != GOT_NORMAL
7448 && got_type != GOT_NORMAL)
7449 got_type |= old_got_type;
7450
7451 /* If the symbol is accessed by both IE and GD methods, we
7452 are able to relax. Turn off the GD flag, without
7453 messing up with any other kind of TLS types that may be
7454 involved. */
7455 if ((got_type & GOT_TLS_IE) && GOT_TLS_GD_ANY_P (got_type))
7456 got_type &= ~ (GOT_TLSDESC_GD | GOT_TLS_GD);
7457
7458 if (old_got_type != got_type)
7459 {
7460 if (h != NULL)
cec5225b 7461 elf_aarch64_hash_entry (h)->got_type = got_type;
a06ea964
NC		 7462 else
7463 {
7464 struct elf_aarch64_local_symbol *locals;
cec5225b 7465 locals = elf_aarch64_locals (abfd);
a06ea964
NC		 7466 BFD_ASSERT (r_symndx < symtab_hdr->sh_info);
7467 locals[r_symndx].got_type = got_type;
7468 }
7469 }
7470
cc0efaa8
MS		 7471 if (htab->root.dynobj == NULL)
7472 htab->root.dynobj = abfd;
7473 if (! aarch64_elf_create_got_section (htab->root.dynobj, info))
7474 return FALSE;
a06ea964
NC		 7475 break;
7476 }
7477
a6bb11b2
YZ		 7478 case BFD_RELOC_AARCH64_CALL26:
7479 case BFD_RELOC_AARCH64_JUMP26:
a06ea964
NC		 7480 /* If this is a local symbol then we resolve it
7481 directly without creating a PLT entry. */
7482 if (h == NULL)
7483 continue;
7484
7485 h->needs_plt = 1;
1419bbe5
WN		 7486 if (h->plt.refcount <= 0)
7487 h->plt.refcount = 1;
7488 else
7489 h->plt.refcount += 1;
a06ea964 7490 break;
a6bb11b2
YZ		 7491
7492 default:
7493 break;
a06ea964
NC		 7494 }
7495 }
a6bb11b2 7496
a06ea964
NC		 7497 return TRUE;
7498}
7499
7500/* Treat mapping symbols as special target symbols. */
7501
7502static bfd_boolean
cec5225b 7503elfNN_aarch64_is_target_special_symbol (bfd *abfd ATTRIBUTE_UNUSED,
a06ea964
NC		 7504 asymbol *sym)
7505{
7506 return bfd_is_aarch64_special_symbol_name (sym->name,
7507 BFD_AARCH64_SPECIAL_SYM_TYPE_ANY);
7508}
7509
7510/* This is a copy of elf_find_function () from elf.c except that
7511 AArch64 mapping symbols are ignored when looking for function names. */
7512
7513static bfd_boolean
7514aarch64_elf_find_function (bfd *abfd ATTRIBUTE_UNUSED,
a06ea964 7515 asymbol **symbols,
fb167eb2 7516 asection *section,
a06ea964
NC		 7517 bfd_vma offset,
7518 const char **filename_ptr,
7519 const char **functionname_ptr)
7520{
7521 const char *filename = NULL;
7522 asymbol *func = NULL;
7523 bfd_vma low_func = 0;
7524 asymbol **p;
7525
7526 for (p = symbols; *p != NULL; p++)
7527 {
7528 elf_symbol_type *q;
7529
7530 q = (elf_symbol_type *) * p;
7531
7532 switch (ELF_ST_TYPE (q->internal_elf_sym.st_info))
7533 {
7534 default:
7535 break;
7536 case STT_FILE:
7537 filename = bfd_asymbol_name (&q->symbol);
7538 break;
7539 case STT_FUNC:
7540 case STT_NOTYPE:
7541 /* Skip mapping symbols. */
7542 if ((q->symbol.flags & BSF_LOCAL)
7543 && (bfd_is_aarch64_special_symbol_name
7544 (q->symbol.name, BFD_AARCH64_SPECIAL_SYM_TYPE_ANY)))
7545 continue;
7546 /* Fall through. */
7547 if (bfd_get_section (&q->symbol) == section
7548 && q->symbol.value >= low_func && q->symbol.value <= offset)
7549 {
7550 func = (asymbol *) q;
7551 low_func = q->symbol.value;
7552 }
7553 break;
7554 }
7555 }
7556
7557 if (func == NULL)
7558 return FALSE;
7559
7560 if (filename_ptr)
7561 *filename_ptr = filename;
7562 if (functionname_ptr)
7563 *functionname_ptr = bfd_asymbol_name (func);
7564
7565 return TRUE;
7566}
7567
7568
7569/* Find the nearest line to a particular section and offset, for error
7570 reporting. This code is a duplicate of the code in elf.c, except
7571 that it uses aarch64_elf_find_function. */
7572
7573static bfd_boolean
cec5225b 7574elfNN_aarch64_find_nearest_line (bfd *abfd,
a06ea964 7575 asymbol **symbols,
fb167eb2 7576 asection *section,
a06ea964
NC		 7577 bfd_vma offset,
7578 const char **filename_ptr,
7579 const char **functionname_ptr,
fb167eb2
AM		 7580 unsigned int *line_ptr,
7581 unsigned int *discriminator_ptr)
a06ea964
NC		 7582{
7583 bfd_boolean found = FALSE;
7584
fb167eb2 7585 if (_bfd_dwarf2_find_nearest_line (abfd, symbols, NULL, section, offset,
a06ea964 7586 filename_ptr, functionname_ptr,
fb167eb2
AM		 7587 line_ptr, discriminator_ptr,
7588 dwarf_debug_sections, 0,
a06ea964
NC		 7589 &elf_tdata (abfd)->dwarf2_find_line_info))
7590 {
7591 if (!*functionname_ptr)
fb167eb2 7592 aarch64_elf_find_function (abfd, symbols, section, offset,
a06ea964
NC		 7593 *filename_ptr ? NULL : filename_ptr,
7594 functionname_ptr);
7595
7596 return TRUE;
7597 }
7598
fb167eb2
AM		 7599 /* Skip _bfd_dwarf1_find_nearest_line since no known AArch64
7600 toolchain uses DWARF1. */
7601
a06ea964
NC		 7602 if (!_bfd_stab_section_find_nearest_line (abfd, symbols, section, offset,
7603 &found, filename_ptr,
7604 functionname_ptr, line_ptr,
7605 &elf_tdata (abfd)->line_info))
7606 return FALSE;
7607
7608 if (found && (*functionname_ptr || *line_ptr))
7609 return TRUE;
7610
7611 if (symbols == NULL)
7612 return FALSE;
7613
fb167eb2 7614 if (!aarch64_elf_find_function (abfd, symbols, section, offset,
a06ea964
NC		 7615 filename_ptr, functionname_ptr))
7616 return FALSE;
7617
7618 *line_ptr = 0;
7619 return TRUE;
7620}
7621
7622static bfd_boolean
cec5225b 7623elfNN_aarch64_find_inliner_info (bfd *abfd,
a06ea964
NC		 7624 const char **filename_ptr,
7625 const char **functionname_ptr,
7626 unsigned int *line_ptr)
7627{
7628 bfd_boolean found;
7629 found = _bfd_dwarf2_find_inliner_info
7630 (abfd, filename_ptr,
7631 functionname_ptr, line_ptr, &elf_tdata (abfd)->dwarf2_find_line_info);
7632 return found;
7633}
7634
7635
7636static void
cec5225b 7637elfNN_aarch64_post_process_headers (bfd *abfd,
1419bbe5 7638 struct bfd_link_info *link_info)
a06ea964
NC		 7639{
7640 Elf_Internal_Ehdr *i_ehdrp; /* ELF file header, internal form. */
7641
7642 i_ehdrp = elf_elfheader (abfd);
a06ea964 7643 i_ehdrp->e_ident[EI_ABIVERSION] = AARCH64_ELF_ABI_VERSION;
1419bbe5 7644
78245035 7645 _bfd_elf_post_process_headers (abfd, link_info);
a06ea964
NC		 7646}
7647
7648static enum elf_reloc_type_class
cec5225b 7649elfNN_aarch64_reloc_type_class (const struct bfd_link_info *info ATTRIBUTE_UNUSED,
7e612e98
AM		 7650 const asection *rel_sec ATTRIBUTE_UNUSED,
7651 const Elf_Internal_Rela *rela)
a06ea964 7652{
f2e6a843
SN		 7653 struct elf_aarch64_link_hash_table *htab = elf_aarch64_hash_table (info);
7654
7655 if (htab->root.dynsym != NULL
7656 && htab->root.dynsym->contents != NULL)
7657 {
7658 /* Check relocation against STT_GNU_IFUNC symbol if there are
7659 dynamic symbols. */
7660 bfd *abfd = info->output_bfd;
7661 const struct elf_backend_data *bed = get_elf_backend_data (abfd);
7662 unsigned long r_symndx = ELFNN_R_SYM (rela->r_info);
7663 if (r_symndx != STN_UNDEF)
7664 {
7665 Elf_Internal_Sym sym;
7666 if (!bed->s->swap_symbol_in (abfd,
7667 (htab->root.dynsym->contents
7668 + r_symndx * bed->s->sizeof_sym),
7669 0, &sym))
7670 {
7671 /* xgettext:c-format */
871b3ab2 7672 _bfd_error_handler (_("%pB symbol number %lu references"
f2e6a843
SN		 7673 " nonexistent SHT_SYMTAB_SHNDX section"),
7674 abfd, r_symndx);
7675 /* Ideally an error class should be returned here. */
7676 }
7677 else if (ELF_ST_TYPE (sym.st_info) == STT_GNU_IFUNC)
7678 return reloc_class_ifunc;
7679 }
7680 }
7681
cec5225b 7682 switch ((int) ELFNN_R_TYPE (rela->r_info))
a06ea964 7683 {
f2e6a843
SN		 7684 case AARCH64_R (IRELATIVE):
7685 return reloc_class_ifunc;
a6bb11b2 7686 case AARCH64_R (RELATIVE):
a06ea964 7687 return reloc_class_relative;
a6bb11b2 7688 case AARCH64_R (JUMP_SLOT):
a06ea964 7689 return reloc_class_plt;
a6bb11b2 7690 case AARCH64_R (COPY):
a06ea964
NC		 7691 return reloc_class_copy;
7692 default:
7693 return reloc_class_normal;
7694 }
7695}
7696
a06ea964
NC		 7697/* Handle an AArch64 specific section when reading an object file. This is
7698 called when bfd_section_from_shdr finds a section with an unknown
7699 type. */
7700
7701static bfd_boolean
cec5225b 7702elfNN_aarch64_section_from_shdr (bfd *abfd,
a06ea964
NC		 7703 Elf_Internal_Shdr *hdr,
7704 const char *name, int shindex)
7705{
7706 /* There ought to be a place to keep ELF backend specific flags, but
7707 at the moment there isn't one. We just keep track of the
7708 sections by their name, instead. Fortunately, the ABI gives
7709 names for all the AArch64 specific sections, so we will probably get
7710 away with this. */
7711 switch (hdr->sh_type)
7712 {
7713 case SHT_AARCH64_ATTRIBUTES:
7714 break;
7715
7716 default:
7717 return FALSE;
7718 }
7719
7720 if (!_bfd_elf_make_section_from_shdr (abfd, hdr, name, shindex))
7721 return FALSE;
7722
7723 return TRUE;
7724}
7725
7726/* A structure used to record a list of sections, independently
7727 of the next and prev fields in the asection structure. */
7728typedef struct section_list
7729{
7730 asection *sec;
7731 struct section_list *next;
7732 struct section_list *prev;
7733}
7734section_list;
7735
7736/* Unfortunately we need to keep a list of sections for which
7737 an _aarch64_elf_section_data structure has been allocated. This
cec5225b 7738 is because it is possible for functions like elfNN_aarch64_write_section
a06ea964
NC		 7739 to be called on a section which has had an elf_data_structure
7740 allocated for it (and so the used_by_bfd field is valid) but
7741 for which the AArch64 extended version of this structure - the
7742 _aarch64_elf_section_data structure - has not been allocated. */
7743static section_list *sections_with_aarch64_elf_section_data = NULL;
7744
7745static void
7746record_section_with_aarch64_elf_section_data (asection *sec)
7747{
7748 struct section_list *entry;
7749
7750 entry = bfd_malloc (sizeof (*entry));
7751 if (entry == NULL)
7752 return;
7753 entry->sec = sec;
7754 entry->next = sections_with_aarch64_elf_section_data;
7755 entry->prev = NULL;
7756 if (entry->next != NULL)
7757 entry->next->prev = entry;
7758 sections_with_aarch64_elf_section_data = entry;
7759}
7760
7761static struct section_list *
7762find_aarch64_elf_section_entry (asection *sec)
7763{
7764 struct section_list *entry;
7765 static struct section_list *last_entry = NULL;
7766
7767 /* This is a short cut for the typical case where the sections are added
7768 to the sections_with_aarch64_elf_section_data list in forward order and
7769 then looked up here in backwards order. This makes a real difference
7770 to the ld-srec/sec64k.exp linker test. */
7771 entry = sections_with_aarch64_elf_section_data;
7772 if (last_entry != NULL)
7773 {
7774 if (last_entry->sec == sec)
7775 entry = last_entry;
7776 else if (last_entry->next != NULL && last_entry->next->sec == sec)
7777 entry = last_entry->next;
7778 }
7779
7780 for (; entry; entry = entry->next)
7781 if (entry->sec == sec)
7782 break;
7783
7784 if (entry)
7785 /* Record the entry prior to this one - it is the entry we are
7786 most likely to want to locate next time. Also this way if we
7787 have been called from
7788 unrecord_section_with_aarch64_elf_section_data () we will not
7789 be caching a pointer that is about to be freed. */
7790 last_entry = entry->prev;
7791
7792 return entry;
7793}
7794
7795static void
7796unrecord_section_with_aarch64_elf_section_data (asection *sec)
7797{
7798 struct section_list *entry;
7799
7800 entry = find_aarch64_elf_section_entry (sec);
7801
7802 if (entry)
7803 {
7804 if (entry->prev != NULL)
7805 entry->prev->next = entry->next;
7806 if (entry->next != NULL)
7807 entry->next->prev = entry->prev;
7808 if (entry == sections_with_aarch64_elf_section_data)
7809 sections_with_aarch64_elf_section_data = entry->next;
7810 free (entry);
7811 }
7812}
7813
7814
7815typedef struct
7816{
7817 void *finfo;
7818 struct bfd_link_info *info;
7819 asection *sec;
7820 int sec_shndx;
7821 int (*func) (void *, const char *, Elf_Internal_Sym *,
7822 asection *, struct elf_link_hash_entry *);
7823} output_arch_syminfo;
7824
7825enum map_symbol_type
7826{
7827 AARCH64_MAP_INSN,
7828 AARCH64_MAP_DATA
7829};
7830
7831
7832/* Output a single mapping symbol. */
7833
7834static bfd_boolean
cec5225b 7835elfNN_aarch64_output_map_sym (output_arch_syminfo *osi,
a06ea964
NC		 7836 enum map_symbol_type type, bfd_vma offset)
7837{
7838 static const char *names[2] = { "$x", "$d" };
7839 Elf_Internal_Sym sym;
7840
7841 sym.st_value = (osi->sec->output_section->vma
7842 + osi->sec->output_offset + offset);
7843 sym.st_size = 0;
7844 sym.st_other = 0;
7845 sym.st_info = ELF_ST_INFO (STB_LOCAL, STT_NOTYPE);
7846 sym.st_shndx = osi->sec_shndx;
7847 return osi->func (osi->finfo, names[type], &sym, osi->sec, NULL) == 1;
7848}
7849
a06ea964
NC		 7850/* Output a single local symbol for a generated stub. */
7851
7852static bfd_boolean
cec5225b 7853elfNN_aarch64_output_stub_sym (output_arch_syminfo *osi, const char *name,
a06ea964
NC		 7854 bfd_vma offset, bfd_vma size)
7855{
7856 Elf_Internal_Sym sym;
7857
7858 sym.st_value = (osi->sec->output_section->vma
7859 + osi->sec->output_offset + offset);
7860 sym.st_size = size;
7861 sym.st_other = 0;
7862 sym.st_info = ELF_ST_INFO (STB_LOCAL, STT_FUNC);
7863 sym.st_shndx = osi->sec_shndx;
7864 return osi->func (osi->finfo, name, &sym, osi->sec, NULL) == 1;
7865}
7866
7867static bfd_boolean
7868aarch64_map_one_stub (struct bfd_hash_entry *gen_entry, void *in_arg)
7869{
cec5225b 7870 struct elf_aarch64_stub_hash_entry *stub_entry;
a06ea964
NC		 7871 asection *stub_sec;
7872 bfd_vma addr;
7873 char *stub_name;
7874 output_arch_syminfo *osi;
7875
7876 /* Massage our args to the form they really have. */
cec5225b 7877 stub_entry = (struct elf_aarch64_stub_hash_entry *) gen_entry;
a06ea964
NC		 7878 osi = (output_arch_syminfo *) in_arg;
7879
7880 stub_sec = stub_entry->stub_sec;
7881
7882 /* Ensure this stub is attached to the current section being
7883 processed. */
7884 if (stub_sec != osi->sec)
7885 return TRUE;
7886
7887 addr = (bfd_vma) stub_entry->stub_offset;
7888
7889 stub_name = stub_entry->output_name;
7890
7891 switch (stub_entry->stub_type)
7892 {
7893 case aarch64_stub_adrp_branch:
cec5225b 7894 if (!elfNN_aarch64_output_stub_sym (osi, stub_name, addr,
a06ea964
NC		 7895 sizeof (aarch64_adrp_branch_stub)))
7896 return FALSE;
cec5225b 7897 if (!elfNN_aarch64_output_map_sym (osi, AARCH64_MAP_INSN, addr))
a06ea964
NC		 7898 return FALSE;
7899 break;
7900 case aarch64_stub_long_branch:
cec5225b 7901 if (!elfNN_aarch64_output_stub_sym
a06ea964
NC		 7902 (osi, stub_name, addr, sizeof (aarch64_long_branch_stub)))
7903 return FALSE;
cec5225b 7904 if (!elfNN_aarch64_output_map_sym (osi, AARCH64_MAP_INSN, addr))
a06ea964 7905 return FALSE;
cec5225b 7906 if (!elfNN_aarch64_output_map_sym (osi, AARCH64_MAP_DATA, addr + 16))
a06ea964
NC		 7907 return FALSE;
7908 break;
68fcca92
JW		 7909 case aarch64_stub_erratum_835769_veneer:
7910 if (!elfNN_aarch64_output_stub_sym (osi, stub_name, addr,
7911 sizeof (aarch64_erratum_835769_stub)))
7912 return FALSE;
7913 if (!elfNN_aarch64_output_map_sym (osi, AARCH64_MAP_INSN, addr))
7914 return FALSE;
7915 break;
4106101c
MS		 7916 case aarch64_stub_erratum_843419_veneer:
7917 if (!elfNN_aarch64_output_stub_sym (osi, stub_name, addr,
7918 sizeof (aarch64_erratum_843419_stub)))
7919 return FALSE;
7920 if (!elfNN_aarch64_output_map_sym (osi, AARCH64_MAP_INSN, addr))
7921 return FALSE;
7922 break;
7923
a06ea964 7924 default:
8e2fe09f 7925 abort ();
a06ea964
NC		 7926 }
7927
7928 return TRUE;
7929}
7930
7931/* Output mapping symbols for linker generated sections. */
7932
7933static bfd_boolean
cec5225b 7934elfNN_aarch64_output_arch_local_syms (bfd *output_bfd,
a06ea964
NC		 7935 struct bfd_link_info *info,
7936 void *finfo,
7937 int (*func) (void *, const char *,
7938 Elf_Internal_Sym *,
7939 asection *,
7940 struct elf_link_hash_entry
7941 *))
7942{
7943 output_arch_syminfo osi;
cec5225b 7944 struct elf_aarch64_link_hash_table *htab;
a06ea964 7945
cec5225b 7946 htab = elf_aarch64_hash_table (info);
a06ea964
NC		 7947
7948 osi.finfo = finfo;
7949 osi.info = info;
7950 osi.func = func;
7951
7952 /* Long calls stubs. */
7953 if (htab->stub_bfd && htab->stub_bfd->sections)
7954 {
7955 asection *stub_sec;
7956
7957 for (stub_sec = htab->stub_bfd->sections;
7958 stub_sec != NULL; stub_sec = stub_sec->next)
7959 {
7960 /* Ignore non-stub sections. */
7961 if (!strstr (stub_sec->name, STUB_SUFFIX))
7962 continue;
7963
7964 osi.sec = stub_sec;
7965
7966 osi.sec_shndx = _bfd_elf_section_from_bfd_section
7967 (output_bfd, osi.sec->output_section);
7968
61865519
MS		 7969 /* The first instruction in a stub is always a branch. */
7970 if (!elfNN_aarch64_output_map_sym (&osi, AARCH64_MAP_INSN, 0))
7971 return FALSE;
7972
a06ea964
NC		 7973 bfd_hash_traverse (&htab->stub_hash_table, aarch64_map_one_stub,
7974 &osi);
7975 }
7976 }
7977
7978 /* Finally, output mapping symbols for the PLT. */
7979 if (!htab->root.splt || htab->root.splt->size == 0)
7980 return TRUE;
7981
a06ea964
NC		 7982 osi.sec_shndx = _bfd_elf_section_from_bfd_section
7983 (output_bfd, htab->root.splt->output_section);
7984 osi.sec = htab->root.splt;
7985
73524045 7986 elfNN_aarch64_output_map_sym (&osi, AARCH64_MAP_INSN, 0);
a06ea964
NC		 7987
7988 return TRUE;
7989
7990}
7991
7992/* Allocate target specific section data. */
7993
7994static bfd_boolean
cec5225b 7995elfNN_aarch64_new_section_hook (bfd *abfd, asection *sec)
a06ea964
NC		 7996{
7997 if (!sec->used_by_bfd)
7998 {
7999 _aarch64_elf_section_data *sdata;
8000 bfd_size_type amt = sizeof (*sdata);
8001
8002 sdata = bfd_zalloc (abfd, amt);
8003 if (sdata == NULL)
8004 return FALSE;
8005 sec->used_by_bfd = sdata;
8006 }
8007
8008 record_section_with_aarch64_elf_section_data (sec);
8009
8010 return _bfd_elf_new_section_hook (abfd, sec);
8011}
8012
8013
8014static void
8015unrecord_section_via_map_over_sections (bfd *abfd ATTRIBUTE_UNUSED,
8016 asection *sec,
8017 void *ignore ATTRIBUTE_UNUSED)
8018{
8019 unrecord_section_with_aarch64_elf_section_data (sec);
8020}
8021
8022static bfd_boolean
cec5225b 8023elfNN_aarch64_close_and_cleanup (bfd *abfd)
a06ea964
NC		 8024{
8025 if (abfd->sections)
8026 bfd_map_over_sections (abfd,
8027 unrecord_section_via_map_over_sections, NULL);
8028
8029 return _bfd_elf_close_and_cleanup (abfd);
8030}
8031
8032static bfd_boolean
cec5225b 8033elfNN_aarch64_bfd_free_cached_info (bfd *abfd)
a06ea964
NC		 8034{
8035 if (abfd->sections)
8036 bfd_map_over_sections (abfd,
8037 unrecord_section_via_map_over_sections, NULL);
8038
8039 return _bfd_free_cached_info (abfd);
8040}
8041
a06ea964
NC		 8042/* Create dynamic sections. This is different from the ARM backend in that
8043 the got, plt, gotplt and their relocation sections are all created in the
8044 standard part of the bfd elf backend. */
8045
8046static bfd_boolean
cec5225b 8047elfNN_aarch64_create_dynamic_sections (bfd *dynobj,
a06ea964
NC		 8048 struct bfd_link_info *info)
8049{
cc0efaa8
MS		 8050 /* We need to create .got section. */
8051 if (!aarch64_elf_create_got_section (dynobj, info))
8052 return FALSE;
a06ea964 8053
9d19e4fd 8054 return _bfd_elf_create_dynamic_sections (dynobj, info);
a06ea964
NC		 8055}
8056
8057
8058/* Allocate space in .plt, .got and associated reloc sections for
8059 dynamic relocs. */
8060
8061static bfd_boolean
cec5225b 8062elfNN_aarch64_allocate_dynrelocs (struct elf_link_hash_entry *h, void *inf)
a06ea964
NC		 8063{
8064 struct bfd_link_info *info;
cec5225b
YZ		 8065 struct elf_aarch64_link_hash_table *htab;
8066 struct elf_aarch64_link_hash_entry *eh;
a06ea964
NC		 8067 struct elf_dyn_relocs *p;
8068
8069 /* An example of a bfd_link_hash_indirect symbol is versioned
8070 symbol. For example: __gxx_personality_v0(bfd_link_hash_indirect)
8071 -> __gxx_personality_v0(bfd_link_hash_defined)
8072
8073 There is no need to process bfd_link_hash_indirect symbols here
8074 because we will also be presented with the concrete instance of
cec5225b 8075 the symbol and elfNN_aarch64_copy_indirect_symbol () will have been
a06ea964 8076 called to copy all relevant data from the generic to the concrete
2d0ca824 8077 symbol instance. */
a06ea964
NC		 8078 if (h->root.type == bfd_link_hash_indirect)
8079 return TRUE;
8080
8081 if (h->root.type == bfd_link_hash_warning)
8082 h = (struct elf_link_hash_entry *) h->root.u.i.link;
8083
8084 info = (struct bfd_link_info *) inf;
cec5225b 8085 htab = elf_aarch64_hash_table (info);
a06ea964 8086
1419bbe5
WN		 8087 /* Since STT_GNU_IFUNC symbol must go through PLT, we handle it
8088 here if it is defined and referenced in a non-shared object. */
8089 if (h->type == STT_GNU_IFUNC
8090 && h->def_regular)
8091 return TRUE;
8092 else if (htab->root.dynamic_sections_created && h->plt.refcount > 0)
a06ea964
NC		 8093 {
8094 /* Make sure this symbol is output as a dynamic symbol.
07d6d2b8 8095 Undefined weak syms won't yet be marked as dynamic. */
ff07562f
JW		 8096 if (h->dynindx == -1 && !h->forced_local
8097 && h->root.type == bfd_link_hash_undefweak)
a06ea964
NC		 8098 {
8099 if (!bfd_elf_link_record_dynamic_symbol (info, h))
8100 return FALSE;
8101 }
8102
0e1862bb 8103 if (bfd_link_pic (info) || WILL_CALL_FINISH_DYNAMIC_SYMBOL (1, 0, h))
a06ea964
NC		 8104 {
8105 asection *s = htab->root.splt;
8106
8107 /* If this is the first .plt entry, make room for the special
8108 first entry. */
8109 if (s->size == 0)
8110 s->size += htab->plt_header_size;
8111
8112 h->plt.offset = s->size;
8113
8114 /* If this symbol is not defined in a regular file, and we are
8115 not generating a shared library, then set the symbol to this
8116 location in the .plt. This is required to make function
8117 pointers compare as equal between the normal executable and
8118 the shared library. */
0e1862bb 8119 if (!bfd_link_pic (info) && !h->def_regular)
a06ea964
NC		 8120 {
8121 h->root.u.def.section = s;
8122 h->root.u.def.value = h->plt.offset;
8123 }
8124
8125 /* Make room for this entry. For now we only create the
8126 small model PLT entries. We later need to find a way
8127 of relaxing into these from the large model PLT entries. */
8128 s->size += PLT_SMALL_ENTRY_SIZE;
8129
8130 /* We also need to make an entry in the .got.plt section, which
8131 will be placed in the .got section by the linker script. */
8132 htab->root.sgotplt->size += GOT_ENTRY_SIZE;
8133
8134 /* We also need to make an entry in the .rela.plt section. */
8135 htab->root.srelplt->size += RELOC_SIZE (htab);
8136
8137 /* We need to ensure that all GOT entries that serve the PLT
8138 are consecutive with the special GOT slots [0] [1] and
8139 [2]. Any addtional relocations, such as
8140 R_AARCH64_TLSDESC, must be placed after the PLT related
8141 entries. We abuse the reloc_count such that during
8142 sizing we adjust reloc_count to indicate the number of
8143 PLT related reserved entries. In subsequent phases when
8144 filling in the contents of the reloc entries, PLT related
8145 entries are placed by computing their PLT index (0
8146 .. reloc_count). While other none PLT relocs are placed
8147 at the slot indicated by reloc_count and reloc_count is
8148 updated. */
8149
8150 htab->root.srelplt->reloc_count++;
8151 }
8152 else
8153 {
8154 h->plt.offset = (bfd_vma) - 1;
8155 h->needs_plt = 0;
8156 }
8157 }
8158 else
8159 {
8160 h->plt.offset = (bfd_vma) - 1;
8161 h->needs_plt = 0;
8162 }
8163
cec5225b 8164 eh = (struct elf_aarch64_link_hash_entry *) h;
a06ea964
NC		 8165 eh->tlsdesc_got_jump_table_offset = (bfd_vma) - 1;
8166
8167 if (h->got.refcount > 0)
8168 {
8169 bfd_boolean dyn;
cec5225b 8170 unsigned got_type = elf_aarch64_hash_entry (h)->got_type;
a06ea964
NC		 8171
8172 h->got.offset = (bfd_vma) - 1;
8173
8174 dyn = htab->root.dynamic_sections_created;
8175
8176 /* Make sure this symbol is output as a dynamic symbol.
07d6d2b8 8177 Undefined weak syms won't yet be marked as dynamic. */
ff07562f
JW		 8178 if (dyn && h->dynindx == -1 && !h->forced_local
8179 && h->root.type == bfd_link_hash_undefweak)
a06ea964
NC		 8180 {
8181 if (!bfd_elf_link_record_dynamic_symbol (info, h))
8182 return FALSE;
8183 }
8184
8185 if (got_type == GOT_UNKNOWN)
8186 {
8187 }
8188 else if (got_type == GOT_NORMAL)
8189 {
8190 h->got.offset = htab->root.sgot->size;
8191 htab->root.sgot->size += GOT_ENTRY_SIZE;
8192 if ((ELF_ST_VISIBILITY (h->other) == STV_DEFAULT
8193 || h->root.type != bfd_link_hash_undefweak)
0e1862bb 8194 && (bfd_link_pic (info)
a377ae2a
SN		 8195 || WILL_CALL_FINISH_DYNAMIC_SYMBOL (dyn, 0, h))
8196 /* Undefined weak symbol in static PIE resolves to 0 without
8197 any dynamic relocations. */
8198 && !UNDEFWEAK_NO_DYNAMIC_RELOC (info, h))
a06ea964
NC		 8199 {
8200 htab->root.srelgot->size += RELOC_SIZE (htab);
8201 }
8202 }
8203 else
8204 {
8205 int indx;
8206 if (got_type & GOT_TLSDESC_GD)
8207 {
8208 eh->tlsdesc_got_jump_table_offset =
8209 (htab->root.sgotplt->size
8210 - aarch64_compute_jump_table_size (htab));
8211 htab->root.sgotplt->size += GOT_ENTRY_SIZE * 2;
8212 h->got.offset = (bfd_vma) - 2;
8213 }
8214
8215 if (got_type & GOT_TLS_GD)
8216 {
8217 h->got.offset = htab->root.sgot->size;
8218 htab->root.sgot->size += GOT_ENTRY_SIZE * 2;
8219 }
8220
8221 if (got_type & GOT_TLS_IE)
8222 {
8223 h->got.offset = htab->root.sgot->size;
8224 htab->root.sgot->size += GOT_ENTRY_SIZE;
8225 }
8226
8227 indx = h && h->dynindx != -1 ? h->dynindx : 0;
8228 if ((ELF_ST_VISIBILITY (h->other) == STV_DEFAULT
8229 || h->root.type != bfd_link_hash_undefweak)
6dda7875 8230 && (!bfd_link_executable (info)
a06ea964
NC		 8231 || indx != 0
8232 || WILL_CALL_FINISH_DYNAMIC_SYMBOL (dyn, 0, h)))
8233 {
8234 if (got_type & GOT_TLSDESC_GD)
8235 {
8236 htab->root.srelplt->size += RELOC_SIZE (htab);
8237 /* Note reloc_count not incremented here! We have
8238 already adjusted reloc_count for this relocation
8239 type. */
8240
8241 /* TLSDESC PLT is now needed, but not yet determined. */
8242 htab->tlsdesc_plt = (bfd_vma) - 1;
8243 }
8244
8245 if (got_type & GOT_TLS_GD)
8246 htab->root.srelgot->size += RELOC_SIZE (htab) * 2;
8247
8248 if (got_type & GOT_TLS_IE)
8249 htab->root.srelgot->size += RELOC_SIZE (htab);
8250 }
8251 }
8252 }
8253 else
8254 {
8255 h->got.offset = (bfd_vma) - 1;
8256 }
8257
8258 if (eh->dyn_relocs == NULL)
8259 return TRUE;
8260
8261 /* In the shared -Bsymbolic case, discard space allocated for
8262 dynamic pc-relative relocs against symbols which turn out to be
8263 defined in regular objects. For the normal shared case, discard
8264 space for pc-relative relocs that have become local due to symbol
8265 visibility changes. */
8266
0e1862bb 8267 if (bfd_link_pic (info))
a06ea964
NC		 8268 {
8269 /* Relocs that use pc_count are those that appear on a call
07d6d2b8
AM		 8270 insn, or certain REL relocs that can generated via assembly.
8271 We want calls to protected symbols to resolve directly to the
8272 function rather than going via the plt. If people want
8273 function pointer comparisons to work as expected then they
8274 should avoid writing weird assembly. */
a06ea964
NC		 8275 if (SYMBOL_CALLS_LOCAL (info, h))
8276 {
8277 struct elf_dyn_relocs **pp;
8278
8279 for (pp = &eh->dyn_relocs; (p = *pp) != NULL;)
8280 {
8281 p->count -= p->pc_count;
8282 p->pc_count = 0;
8283 if (p->count == 0)
8284 *pp = p->next;
8285 else
8286 pp = &p->next;
8287 }
8288 }
8289
8290 /* Also discard relocs on undefined weak syms with non-default
07d6d2b8 8291 visibility. */
a06ea964
NC		 8292 if (eh->dyn_relocs != NULL && h->root.type == bfd_link_hash_undefweak)
8293 {
ddb7fd0f
L		 8294 if (ELF_ST_VISIBILITY (h->other) != STV_DEFAULT
8295 || UNDEFWEAK_NO_DYNAMIC_RELOC (info, h))
a06ea964
NC		 8296 eh->dyn_relocs = NULL;
8297
8298 /* Make sure undefined weak symbols are output as a dynamic
8299 symbol in PIEs. */
8300 else if (h->dynindx == -1
8301 && !h->forced_local
ff07562f 8302 && h->root.type == bfd_link_hash_undefweak
a06ea964
NC		 8303 && !bfd_elf_link_record_dynamic_symbol (info, h))
8304 return FALSE;
8305 }
8306
8307 }
8308 else if (ELIMINATE_COPY_RELOCS)
8309 {
8310 /* For the non-shared case, discard space for relocs against
07d6d2b8
AM		 8311 symbols which turn out to need copy relocs or are not
8312 dynamic. */
a06ea964
NC		 8313
8314 if (!h->non_got_ref
8315 && ((h->def_dynamic
8316 && !h->def_regular)
8317 || (htab->root.dynamic_sections_created
8318 && (h->root.type == bfd_link_hash_undefweak
8319 || h->root.type == bfd_link_hash_undefined))))
8320 {
8321 /* Make sure this symbol is output as a dynamic symbol.
8322 Undefined weak syms won't yet be marked as dynamic. */
8323 if (h->dynindx == -1
8324 && !h->forced_local
ff07562f 8325 && h->root.type == bfd_link_hash_undefweak
a06ea964
NC		 8326 && !bfd_elf_link_record_dynamic_symbol (info, h))
8327 return FALSE;
8328
8329 /* If that succeeded, we know we'll be keeping all the
8330 relocs. */
8331 if (h->dynindx != -1)
8332 goto keep;
8333 }
8334
8335 eh->dyn_relocs = NULL;
8336
8337 keep:;
8338 }
8339
8340 /* Finally, allocate space. */
8341 for (p = eh->dyn_relocs; p != NULL; p = p->next)
8342 {
8343 asection *sreloc;
8344
8345 sreloc = elf_section_data (p->sec)->sreloc;
8346
8347 BFD_ASSERT (sreloc != NULL);
8348
8349 sreloc->size += p->count * RELOC_SIZE (htab);
8350 }
8351
8352 return TRUE;
8353}
8354
1419bbe5
WN		 8355/* Allocate space in .plt, .got and associated reloc sections for
8356 ifunc dynamic relocs. */
8357
8358static bfd_boolean
8359elfNN_aarch64_allocate_ifunc_dynrelocs (struct elf_link_hash_entry *h,
8360 void *inf)
8361{
8362 struct bfd_link_info *info;
8363 struct elf_aarch64_link_hash_table *htab;
8364 struct elf_aarch64_link_hash_entry *eh;
8365
8366 /* An example of a bfd_link_hash_indirect symbol is versioned
8367 symbol. For example: __gxx_personality_v0(bfd_link_hash_indirect)
8368 -> __gxx_personality_v0(bfd_link_hash_defined)
8369
8370 There is no need to process bfd_link_hash_indirect symbols here
8371 because we will also be presented with the concrete instance of
8372 the symbol and elfNN_aarch64_copy_indirect_symbol () will have been
8373 called to copy all relevant data from the generic to the concrete
2d0ca824 8374 symbol instance. */
1419bbe5
WN		 8375 if (h->root.type == bfd_link_hash_indirect)
8376 return TRUE;
8377
8378 if (h->root.type == bfd_link_hash_warning)
8379 h = (struct elf_link_hash_entry *) h->root.u.i.link;
8380
8381 info = (struct bfd_link_info *) inf;
8382 htab = elf_aarch64_hash_table (info);
8383
8384 eh = (struct elf_aarch64_link_hash_entry *) h;
8385
8386 /* Since STT_GNU_IFUNC symbol must go through PLT, we handle it
8387 here if it is defined and referenced in a non-shared object. */
8388 if (h->type == STT_GNU_IFUNC
8389 && h->def_regular)
8390 return _bfd_elf_allocate_ifunc_dyn_relocs (info, h,
8391 &eh->dyn_relocs,
2df3368d 8392 NULL,
1419bbe5
WN		 8393 htab->plt_entry_size,
8394 htab->plt_header_size,
233cc9c1
L		 8395 GOT_ENTRY_SIZE,
8396 FALSE);
1419bbe5
WN		 8397 return TRUE;
8398}
8399
8400/* Allocate space in .plt, .got and associated reloc sections for
8401 local dynamic relocs. */
8402
8403static bfd_boolean
8404elfNN_aarch64_allocate_local_dynrelocs (void **slot, void *inf)
8405{
8406 struct elf_link_hash_entry *h
8407 = (struct elf_link_hash_entry *) *slot;
8408
8409 if (h->type != STT_GNU_IFUNC
8410 || !h->def_regular
8411 || !h->ref_regular
8412 || !h->forced_local
8413 || h->root.type != bfd_link_hash_defined)
8414 abort ();
8415
8416 return elfNN_aarch64_allocate_dynrelocs (h, inf);
8417}
8418
8419/* Allocate space in .plt, .got and associated reloc sections for
8420 local ifunc dynamic relocs. */
8421
8422static bfd_boolean
8423elfNN_aarch64_allocate_local_ifunc_dynrelocs (void **slot, void *inf)
8424{
8425 struct elf_link_hash_entry *h
8426 = (struct elf_link_hash_entry *) *slot;
8427
8428 if (h->type != STT_GNU_IFUNC
8429 || !h->def_regular
8430 || !h->ref_regular
8431 || !h->forced_local
8432 || h->root.type != bfd_link_hash_defined)
8433 abort ();
8434
8435 return elfNN_aarch64_allocate_ifunc_dynrelocs (h, inf);
8436}
a06ea964 8437
63c1f59d
AM		 8438/* Set DF_TEXTREL if we find any dynamic relocs that apply to
8439 read-only sections. */
c2170589
JW		 8440
8441static bfd_boolean
63c1f59d 8442maybe_set_textrel (struct elf_link_hash_entry *h, void *info_p)
c2170589 8443{
63c1f59d 8444 asection *sec;
c2170589 8445
63c1f59d
AM		 8446 if (h->root.type == bfd_link_hash_indirect)
8447 return TRUE;
c2170589 8448
63c1f59d
AM		 8449 sec = readonly_dynrelocs (h);
8450 if (sec != NULL)
8451 {
8452 struct bfd_link_info *info = (struct bfd_link_info *) info_p;
c2170589 8453
63c1f59d
AM		 8454 info->flags |= DF_TEXTREL;
8455 info->callbacks->minfo
c1c8c1ef 8456 (_("%pB: dynamic relocation against `%pT' in read-only section `%pA'\n"),
63c1f59d 8457 sec->owner, h->root.root.string, sec);
c2170589 8458
63c1f59d
AM		 8459 /* Not an error, just cut short the traversal. */
8460 return FALSE;
c2170589
JW		 8461 }
8462 return TRUE;
8463}
8464
a06ea964
NC		 8465/* This is the most important function of all . Innocuosly named
8466 though ! */
2d0ca824 8467
a06ea964 8468static bfd_boolean
cec5225b 8469elfNN_aarch64_size_dynamic_sections (bfd *output_bfd ATTRIBUTE_UNUSED,
a06ea964
NC		 8470 struct bfd_link_info *info)
8471{
cec5225b 8472 struct elf_aarch64_link_hash_table *htab;
a06ea964
NC		 8473 bfd *dynobj;
8474 asection *s;
8475 bfd_boolean relocs;
8476 bfd *ibfd;
8477
cec5225b 8478 htab = elf_aarch64_hash_table ((info));
a06ea964
NC		 8479 dynobj = htab->root.dynobj;
8480
8481 BFD_ASSERT (dynobj != NULL);
8482
8483 if (htab->root.dynamic_sections_created)
8484 {
9b8b325a 8485 if (bfd_link_executable (info) && !info->nointerp)
a06ea964
NC		 8486 {
8487 s = bfd_get_linker_section (dynobj, ".interp");
8488 if (s == NULL)
8489 abort ();
8490 s->size = sizeof ELF_DYNAMIC_INTERPRETER;
8491 s->contents = (unsigned char *) ELF_DYNAMIC_INTERPRETER;
8492 }
8493 }
8494
8495 /* Set up .got offsets for local syms, and space for local dynamic
8496 relocs. */
c72f2fb2 8497 for (ibfd = info->input_bfds; ibfd != NULL; ibfd = ibfd->link.next)
a06ea964
NC		 8498 {
8499 struct elf_aarch64_local_symbol *locals = NULL;
8500 Elf_Internal_Shdr *symtab_hdr;
8501 asection *srel;
8502 unsigned int i;
8503
8504 if (!is_aarch64_elf (ibfd))
8505 continue;
8506
8507 for (s = ibfd->sections; s != NULL; s = s->next)
8508 {
8509 struct elf_dyn_relocs *p;
8510
8511 for (p = (struct elf_dyn_relocs *)
8512 (elf_section_data (s)->local_dynrel); p != NULL; p = p->next)
8513 {
8514 if (!bfd_is_abs_section (p->sec)
8515 && bfd_is_abs_section (p->sec->output_section))
8516 {
8517 /* Input section has been discarded, either because
8518 it is a copy of a linkonce section or due to
8519 linker script /DISCARD/, so we'll be discarding
8520 the relocs too. */
8521 }
8522 else if (p->count != 0)
8523 {
8524 srel = elf_section_data (p->sec)->sreloc;
8525 srel->size += p->count * RELOC_SIZE (htab);
8526 if ((p->sec->output_section->flags & SEC_READONLY) != 0)
8527 info->flags |= DF_TEXTREL;
8528 }
8529 }
8530 }
8531
cec5225b 8532 locals = elf_aarch64_locals (ibfd);
a06ea964
NC		 8533 if (!locals)
8534 continue;
8535
8536 symtab_hdr = &elf_symtab_hdr (ibfd);
8537 srel = htab->root.srelgot;
8538 for (i = 0; i < symtab_hdr->sh_info; i++)
8539 {
8540 locals[i].got_offset = (bfd_vma) - 1;
8541 locals[i].tlsdesc_got_jump_table_offset = (bfd_vma) - 1;
8542 if (locals[i].got_refcount > 0)
8543 {
8544 unsigned got_type = locals[i].got_type;
8545 if (got_type & GOT_TLSDESC_GD)
8546 {
8547 locals[i].tlsdesc_got_jump_table_offset =
8548 (htab->root.sgotplt->size
8549 - aarch64_compute_jump_table_size (htab));
8550 htab->root.sgotplt->size += GOT_ENTRY_SIZE * 2;
8551 locals[i].got_offset = (bfd_vma) - 2;
8552 }
8553
8554 if (got_type & GOT_TLS_GD)
8555 {
8556 locals[i].got_offset = htab->root.sgot->size;
8557 htab->root.sgot->size += GOT_ENTRY_SIZE * 2;
8558 }
8559
b53b1bed
JW		 8560 if (got_type & GOT_TLS_IE
8561 || got_type & GOT_NORMAL)
a06ea964
NC		 8562 {
8563 locals[i].got_offset = htab->root.sgot->size;
8564 htab->root.sgot->size += GOT_ENTRY_SIZE;
8565 }
8566
8567 if (got_type == GOT_UNKNOWN)
8568 {
8569 }
8570
0e1862bb 8571 if (bfd_link_pic (info))
a06ea964
NC		 8572 {
8573 if (got_type & GOT_TLSDESC_GD)
8574 {
8575 htab->root.srelplt->size += RELOC_SIZE (htab);
8576 /* Note RELOC_COUNT not incremented here! */
8577 htab->tlsdesc_plt = (bfd_vma) - 1;
8578 }
8579
8580 if (got_type & GOT_TLS_GD)
8581 htab->root.srelgot->size += RELOC_SIZE (htab) * 2;
8582
b53b1bed
JW		 8583 if (got_type & GOT_TLS_IE
8584 || got_type & GOT_NORMAL)
a06ea964
NC		 8585 htab->root.srelgot->size += RELOC_SIZE (htab);
8586 }
8587 }
8588 else
8589 {
8590 locals[i].got_refcount = (bfd_vma) - 1;
8591 }
8592 }
8593 }
8594
8595
8596 /* Allocate global sym .plt and .got entries, and space for global
8597 sym dynamic relocs. */
cec5225b 8598 elf_link_hash_traverse (&htab->root, elfNN_aarch64_allocate_dynrelocs,
a06ea964
NC		 8599 info);
8600
1419bbe5
WN		 8601 /* Allocate global ifunc sym .plt and .got entries, and space for global
8602 ifunc sym dynamic relocs. */
8603 elf_link_hash_traverse (&htab->root, elfNN_aarch64_allocate_ifunc_dynrelocs,
8604 info);
8605
8606 /* Allocate .plt and .got entries, and space for local symbols. */
8607 htab_traverse (htab->loc_hash_table,
8608 elfNN_aarch64_allocate_local_dynrelocs,
8609 info);
8610
8611 /* Allocate .plt and .got entries, and space for local ifunc symbols. */
8612 htab_traverse (htab->loc_hash_table,
8613 elfNN_aarch64_allocate_local_ifunc_dynrelocs,
8614 info);
a06ea964
NC		 8615
8616 /* For every jump slot reserved in the sgotplt, reloc_count is
8617 incremented. However, when we reserve space for TLS descriptors,
8618 it's not incremented, so in order to compute the space reserved
8619 for them, it suffices to multiply the reloc count by the jump
8620 slot size. */
8621
8622 if (htab->root.srelplt)
8847944f 8623 htab->sgotplt_jump_table_size = aarch64_compute_jump_table_size (htab);
a06ea964
NC		 8624
8625 if (htab->tlsdesc_plt)
8626 {
8627 if (htab->root.splt->size == 0)
8628 htab->root.splt->size += PLT_ENTRY_SIZE;
8629
8630 htab->tlsdesc_plt = htab->root.splt->size;
8631 htab->root.splt->size += PLT_TLSDESC_ENTRY_SIZE;
8632
8633 /* If we're not using lazy TLS relocations, don't generate the
07d6d2b8 8634 GOT entry required. */
a06ea964
NC		 8635 if (!(info->flags & DF_BIND_NOW))
8636 {
8637 htab->dt_tlsdesc_got = htab->root.sgot->size;
8638 htab->root.sgot->size += GOT_ENTRY_SIZE;
8639 }
8640 }
8641
68fcca92 8642 /* Init mapping symbols information to use later to distingush between
4106101c
MS		 8643 code and data while scanning for errata. */
8644 if (htab->fix_erratum_835769 || htab->fix_erratum_843419)
68fcca92
JW		 8645 for (ibfd = info->input_bfds; ibfd != NULL; ibfd = ibfd->link.next)
8646 {
8647 if (!is_aarch64_elf (ibfd))
8648 continue;
8649 bfd_elfNN_aarch64_init_maps (ibfd);
8650 }
8651
a06ea964
NC		 8652 /* We now have determined the sizes of the various dynamic sections.
8653 Allocate memory for them. */
8654 relocs = FALSE;
8655 for (s = dynobj->sections; s != NULL; s = s->next)
8656 {
8657 if ((s->flags & SEC_LINKER_CREATED) == 0)
8658 continue;
8659
8660 if (s == htab->root.splt
8661 || s == htab->root.sgot
8662 || s == htab->root.sgotplt
8663 || s == htab->root.iplt
9d19e4fd 8664 || s == htab->root.igotplt
5474d94f
AM		 8665 || s == htab->root.sdynbss
8666 || s == htab->root.sdynrelro)
a06ea964
NC		 8667 {
8668 /* Strip this section if we don't need it; see the
8669 comment below. */
8670 }
8671 else if (CONST_STRNEQ (bfd_get_section_name (dynobj, s), ".rela"))
8672 {
8673 if (s->size != 0 && s != htab->root.srelplt)
8674 relocs = TRUE;
8675
8676 /* We use the reloc_count field as a counter if we need
8677 to copy relocs into the output file. */
8678 if (s != htab->root.srelplt)
8679 s->reloc_count = 0;
8680 }
8681 else
8682 {
8683 /* It's not one of our sections, so don't allocate space. */
8684 continue;
8685 }
8686
8687 if (s->size == 0)
8688 {
8689 /* If we don't need this section, strip it from the
8690 output file. This is mostly to handle .rela.bss and
8691 .rela.plt. We must create both sections in
8692 create_dynamic_sections, because they must be created
8693 before the linker maps input sections to output
8694 sections. The linker does that before
8695 adjust_dynamic_symbol is called, and it is that
8696 function which decides whether anything needs to go
8697 into these sections. */
a06ea964
NC		 8698 s->flags |= SEC_EXCLUDE;
8699 continue;
8700 }
8701
8702 if ((s->flags & SEC_HAS_CONTENTS) == 0)
8703 continue;
8704
8705 /* Allocate memory for the section contents. We use bfd_zalloc
07d6d2b8
AM		 8706 here in case unused entries are not reclaimed before the
8707 section's contents are written out. This should not happen,
8708 but this way if it does, we get a R_AARCH64_NONE reloc instead
8709 of garbage. */
a06ea964
NC		 8710 s->contents = (bfd_byte *) bfd_zalloc (dynobj, s->size);
8711 if (s->contents == NULL)
8712 return FALSE;
8713 }
8714
8715 if (htab->root.dynamic_sections_created)
8716 {
8717 /* Add some entries to the .dynamic section. We fill in the
07d6d2b8
AM		 8718 values later, in elfNN_aarch64_finish_dynamic_sections, but we
8719 must add the entries now so that we get the correct size for
8720 the .dynamic section. The DT_DEBUG entry is filled in by the
8721 dynamic linker and used by the debugger. */
a06ea964
NC		 8722#define add_dynamic_entry(TAG, VAL) \
8723 _bfd_elf_add_dynamic_entry (info, TAG, VAL)
8724
0e1862bb 8725 if (bfd_link_executable (info))
a06ea964
NC		 8726 {
8727 if (!add_dynamic_entry (DT_DEBUG, 0))
8728 return FALSE;
8729 }
8730
8731 if (htab->root.splt->size != 0)
8732 {
8733 if (!add_dynamic_entry (DT_PLTGOT, 0)
8734 || !add_dynamic_entry (DT_PLTRELSZ, 0)
8735 || !add_dynamic_entry (DT_PLTREL, DT_RELA)
8736 || !add_dynamic_entry (DT_JMPREL, 0))
8737 return FALSE;
8738
8739 if (htab->tlsdesc_plt
8740 && (!add_dynamic_entry (DT_TLSDESC_PLT, 0)
8741 || !add_dynamic_entry (DT_TLSDESC_GOT, 0)))
8742 return FALSE;
8743 }
8744
8745 if (relocs)
8746 {
8747 if (!add_dynamic_entry (DT_RELA, 0)
8748 || !add_dynamic_entry (DT_RELASZ, 0)
8749 || !add_dynamic_entry (DT_RELAENT, RELOC_SIZE (htab)))
8750 return FALSE;
8751
8752 /* If any dynamic relocs apply to a read-only section,
8753 then we need a DT_TEXTREL entry. */
c2170589 8754 if ((info->flags & DF_TEXTREL) == 0)
63c1f59d 8755 elf_link_hash_traverse (&htab->root, maybe_set_textrel, info);
c2170589 8756
a06ea964
NC		 8757 if ((info->flags & DF_TEXTREL) != 0)
8758 {
8759 if (!add_dynamic_entry (DT_TEXTREL, 0))
8760 return FALSE;
8761 }
8762 }
8763 }
8764#undef add_dynamic_entry
8765
8766 return TRUE;
a06ea964
NC		 8767}
8768
8769static inline void
caed7120
YZ		 8770elf_aarch64_update_plt_entry (bfd *output_bfd,
8771 bfd_reloc_code_real_type r_type,
8772 bfd_byte *plt_entry, bfd_vma value)
a06ea964 8773{
caed7120
YZ		 8774 reloc_howto_type *howto = elfNN_aarch64_howto_from_bfd_reloc (r_type);
8775
1d75a8e2
NC		 8776 /* FIXME: We should check the return value from this function call. */
8777 (void) _bfd_aarch64_elf_put_addend (output_bfd, plt_entry, r_type, howto, value);
a06ea964
NC		 8778}
8779
8780static void
cec5225b
YZ		 8781elfNN_aarch64_create_small_pltn_entry (struct elf_link_hash_entry *h,
8782 struct elf_aarch64_link_hash_table
1419bbe5
WN		 8783 *htab, bfd *output_bfd,
8784 struct bfd_link_info *info)
a06ea964
NC		 8785{
8786 bfd_byte *plt_entry;
8787 bfd_vma plt_index;
8788 bfd_vma got_offset;
8789 bfd_vma gotplt_entry_address;
8790 bfd_vma plt_entry_address;
8791 Elf_Internal_Rela rela;
8792 bfd_byte *loc;
1419bbe5
WN		 8793 asection *plt, *gotplt, *relplt;
8794
8795 /* When building a static executable, use .iplt, .igot.plt and
8796 .rela.iplt sections for STT_GNU_IFUNC symbols. */
8797 if (htab->root.splt != NULL)
8798 {
8799 plt = htab->root.splt;
8800 gotplt = htab->root.sgotplt;
8801 relplt = htab->root.srelplt;
8802 }
8803 else
8804 {
8805 plt = htab->root.iplt;
8806 gotplt = htab->root.igotplt;
8807 relplt = htab->root.irelplt;
8808 }
8809
8810 /* Get the index in the procedure linkage table which
8811 corresponds to this symbol. This is the index of this symbol
8812 in all the symbols for which we are making plt entries. The
8813 first entry in the procedure linkage table is reserved.
a06ea964 8814
1419bbe5
WN		 8815 Get the offset into the .got table of the entry that
8816 corresponds to this function. Each .got entry is GOT_ENTRY_SIZE
8817 bytes. The first three are reserved for the dynamic linker.
692e2b8b 8818
1419bbe5
WN		 8819 For static executables, we don't reserve anything. */
8820
8821 if (plt == htab->root.splt)
8822 {
8823 plt_index = (h->plt.offset - htab->plt_header_size) / htab->plt_entry_size;
8824 got_offset = (plt_index + 3) * GOT_ENTRY_SIZE;
8825 }
8826 else
8827 {
8828 plt_index = h->plt.offset / htab->plt_entry_size;
8829 got_offset = plt_index * GOT_ENTRY_SIZE;
8830 }
8831
8832 plt_entry = plt->contents + h->plt.offset;
8833 plt_entry_address = plt->output_section->vma
f44a1f8e 8834 + plt->output_offset + h->plt.offset;
1419bbe5
WN		 8835 gotplt_entry_address = gotplt->output_section->vma +
8836 gotplt->output_offset + got_offset;
a06ea964
NC		 8837
8838 /* Copy in the boiler-plate for the PLTn entry. */
cec5225b 8839 memcpy (plt_entry, elfNN_aarch64_small_plt_entry, PLT_SMALL_ENTRY_SIZE);
a06ea964
NC		 8840
8841 /* Fill in the top 21 bits for this: ADRP x16, PLT_GOT + n * 8.
8842 ADRP: ((PG(S+A)-PG(P)) >> 12) & 0x1fffff */
caed7120
YZ		 8843 elf_aarch64_update_plt_entry (output_bfd, BFD_RELOC_AARCH64_ADR_HI21_PCREL,
8844 plt_entry,
8845 PG (gotplt_entry_address) -
8846 PG (plt_entry_address));
a06ea964
NC		 8847
8848 /* Fill in the lo12 bits for the load from the pltgot. */
caed7120
YZ		 8849 elf_aarch64_update_plt_entry (output_bfd, BFD_RELOC_AARCH64_LDSTNN_LO12,
8850 plt_entry + 4,
8851 PG_OFFSET (gotplt_entry_address));
a06ea964 8852
9aff4b7a 8853 /* Fill in the lo12 bits for the add from the pltgot entry. */
caed7120
YZ		 8854 elf_aarch64_update_plt_entry (output_bfd, BFD_RELOC_AARCH64_ADD_LO12,
8855 plt_entry + 8,
8856 PG_OFFSET (gotplt_entry_address));
a06ea964
NC		 8857
8858 /* All the GOTPLT Entries are essentially initialized to PLT0. */
cec5225b 8859 bfd_put_NN (output_bfd,
1419bbe5
WN		 8860 plt->output_section->vma + plt->output_offset,
8861 gotplt->contents + got_offset);
a06ea964 8862
a06ea964 8863 rela.r_offset = gotplt_entry_address;
1419bbe5
WN		 8864
8865 if (h->dynindx == -1
0e1862bb 8866 || ((bfd_link_executable (info)
1419bbe5
WN		 8867 || ELF_ST_VISIBILITY (h->other) != STV_DEFAULT)
8868 && h->def_regular
8869 && h->type == STT_GNU_IFUNC))
8870 {
8871 /* If an STT_GNU_IFUNC symbol is locally defined, generate
8872 R_AARCH64_IRELATIVE instead of R_AARCH64_JUMP_SLOT. */
8873 rela.r_info = ELFNN_R_INFO (0, AARCH64_R (IRELATIVE));
8874 rela.r_addend = (h->root.u.def.value
8875 + h->root.u.def.section->output_section->vma
8876 + h->root.u.def.section->output_offset);
8877 }
8878 else
8879 {
8880 /* Fill in the entry in the .rela.plt section. */
8881 rela.r_info = ELFNN_R_INFO (h->dynindx, AARCH64_R (JUMP_SLOT));
8882 rela.r_addend = 0;
8883 }
a06ea964
NC		 8884
8885 /* Compute the relocation entry to used based on PLT index and do
8886 not adjust reloc_count. The reloc_count has already been adjusted
8887 to account for this entry. */
1419bbe5 8888 loc = relplt->contents + plt_index * RELOC_SIZE (htab);
cec5225b 8889 bfd_elfNN_swap_reloca_out (output_bfd, &rela, loc);
a06ea964
NC		 8890}
8891
8892/* Size sections even though they're not dynamic. We use it to setup
8893 _TLS_MODULE_BASE_, if needed. */
8894
8895static bfd_boolean
cec5225b 8896elfNN_aarch64_always_size_sections (bfd *output_bfd,
a06ea964
NC		 8897 struct bfd_link_info *info)
8898{
8899 asection *tls_sec;
8900
0e1862bb 8901 if (bfd_link_relocatable (info))
a06ea964
NC		 8902 return TRUE;
8903
8904 tls_sec = elf_hash_table (info)->tls_sec;
8905
8906 if (tls_sec)
8907 {
8908 struct elf_link_hash_entry *tlsbase;
8909
8910 tlsbase = elf_link_hash_lookup (elf_hash_table (info),
8911 "_TLS_MODULE_BASE_", TRUE, TRUE, FALSE);
8912
8913 if (tlsbase)
8914 {
8915 struct bfd_link_hash_entry *h = NULL;
8916 const struct elf_backend_data *bed =
8917 get_elf_backend_data (output_bfd);
8918
8919 if (!(_bfd_generic_link_add_one_symbol
8920 (info, output_bfd, "_TLS_MODULE_BASE_", BSF_LOCAL,
8921 tls_sec, 0, NULL, FALSE, bed->collect, &h)))
8922 return FALSE;
8923
8924 tlsbase->type = STT_TLS;
8925 tlsbase = (struct elf_link_hash_entry *) h;
8926 tlsbase->def_regular = 1;
8927 tlsbase->other = STV_HIDDEN;
8928 (*bed->elf_backend_hide_symbol) (info, tlsbase, TRUE);
8929 }
8930 }
8931
8932 return TRUE;
8933}
8934
8935/* Finish up dynamic symbol handling. We set the contents of various
8936 dynamic sections here. */
2d0ca824 8937
a06ea964 8938static bfd_boolean
cec5225b 8939elfNN_aarch64_finish_dynamic_symbol (bfd *output_bfd,
a06ea964
NC		 8940 struct bfd_link_info *info,
8941 struct elf_link_hash_entry *h,
8942 Elf_Internal_Sym *sym)
8943{
cec5225b
YZ		 8944 struct elf_aarch64_link_hash_table *htab;
8945 htab = elf_aarch64_hash_table (info);
a06ea964
NC		 8946
8947 if (h->plt.offset != (bfd_vma) - 1)
8948 {
1419bbe5
WN		 8949 asection *plt, *gotplt, *relplt;
8950
a06ea964 8951 /* This symbol has an entry in the procedure linkage table. Set
07d6d2b8 8952 it up. */
a06ea964 8953
1419bbe5
WN		 8954 /* When building a static executable, use .iplt, .igot.plt and
8955 .rela.iplt sections for STT_GNU_IFUNC symbols. */
8956 if (htab->root.splt != NULL)
8957 {
8958 plt = htab->root.splt;
8959 gotplt = htab->root.sgotplt;
8960 relplt = htab->root.srelplt;
8961 }
8962 else
8963 {
8964 plt = htab->root.iplt;
8965 gotplt = htab->root.igotplt;
8966 relplt = htab->root.irelplt;
8967 }
8968
8969 /* This symbol has an entry in the procedure linkage table. Set
8970 it up. */
8971 if ((h->dynindx == -1
0e1862bb 8972 && !((h->forced_local || bfd_link_executable (info))
1419bbe5
WN		 8973 && h->def_regular
8974 && h->type == STT_GNU_IFUNC))
8975 || plt == NULL
8976 || gotplt == NULL
8977 || relplt == NULL)
f955cccf 8978 return FALSE;
a06ea964 8979
1419bbe5 8980 elfNN_aarch64_create_small_pltn_entry (h, htab, output_bfd, info);
a06ea964
NC		 8981 if (!h->def_regular)
8982 {
8983 /* Mark the symbol as undefined, rather than as defined in
46b87d49 8984 the .plt section. */
a06ea964 8985 sym->st_shndx = SHN_UNDEF;
46b87d49
WN		 8986 /* If the symbol is weak we need to clear the value.
8987 Otherwise, the PLT entry would provide a definition for
8988 the symbol even if the symbol wasn't defined anywhere,
8989 and so the symbol would never be NULL. Leave the value if
8990 there were any relocations where pointer equality matters
8991 (this is a clue for the dynamic linker, to make function
8992 pointer comparisons work between an application and shared
8993 library). */
8994 if (!h->ref_regular_nonweak || !h->pointer_equality_needed)
8995 sym->st_value = 0;
a06ea964
NC		 8996 }
8997 }
8998
8999 if (h->got.offset != (bfd_vma) - 1
a377ae2a
SN		 9000 && elf_aarch64_hash_entry (h)->got_type == GOT_NORMAL
9001 /* Undefined weak symbol in static PIE resolves to 0 without
9002 any dynamic relocations. */
9003 && !UNDEFWEAK_NO_DYNAMIC_RELOC (info, h))
a06ea964
NC		 9004 {
9005 Elf_Internal_Rela rela;
9006 bfd_byte *loc;
9007
9008 /* This symbol has an entry in the global offset table. Set it
07d6d2b8 9009 up. */
a06ea964
NC		 9010 if (htab->root.sgot == NULL || htab->root.srelgot == NULL)
9011 abort ();
9012
9013 rela.r_offset = (htab->root.sgot->output_section->vma
9014 + htab->root.sgot->output_offset
9015 + (h->got.offset & ~(bfd_vma) 1));
9016
49206388
WN		 9017 if (h->def_regular
9018 && h->type == STT_GNU_IFUNC)
9019 {
0e1862bb 9020 if (bfd_link_pic (info))
49206388
WN		 9021 {
9022 /* Generate R_AARCH64_GLOB_DAT. */
9023 goto do_glob_dat;
9024 }
9025 else
9026 {
9027 asection *plt;
9028
9029 if (!h->pointer_equality_needed)
9030 abort ();
9031
9032 /* For non-shared object, we can't use .got.plt, which
9033 contains the real function address if we need pointer
9034 equality. We load the GOT entry with the PLT entry. */
9035 plt = htab->root.splt ? htab->root.splt : htab->root.iplt;
9036 bfd_put_NN (output_bfd, (plt->output_section->vma
9037 + plt->output_offset
9038 + h->plt.offset),
9039 htab->root.sgot->contents
9040 + (h->got.offset & ~(bfd_vma) 1));
9041 return TRUE;
9042 }
9043 }
0e1862bb 9044 else if (bfd_link_pic (info) && SYMBOL_REFERENCES_LOCAL (info, h))
a06ea964 9045 {
0ee3a6db 9046 if (!(h->def_regular || ELF_COMMON_DEF_P (h)))
a06ea964
NC		 9047 return FALSE;
9048
9049 BFD_ASSERT ((h->got.offset & 1) != 0);
a6bb11b2 9050 rela.r_info = ELFNN_R_INFO (0, AARCH64_R (RELATIVE));
a06ea964
NC		 9051 rela.r_addend = (h->root.u.def.value
9052 + h->root.u.def.section->output_section->vma
9053 + h->root.u.def.section->output_offset);
9054 }
9055 else
9056 {
49206388 9057do_glob_dat:
a06ea964 9058 BFD_ASSERT ((h->got.offset & 1) == 0);
cec5225b 9059 bfd_put_NN (output_bfd, (bfd_vma) 0,
a06ea964 9060 htab->root.sgot->contents + h->got.offset);
a6bb11b2 9061 rela.r_info = ELFNN_R_INFO (h->dynindx, AARCH64_R (GLOB_DAT));
a06ea964
NC		 9062 rela.r_addend = 0;
9063 }
9064
9065 loc = htab->root.srelgot->contents;
9066 loc += htab->root.srelgot->reloc_count++ * RELOC_SIZE (htab);
cec5225b 9067 bfd_elfNN_swap_reloca_out (output_bfd, &rela, loc);
a06ea964
NC		 9068 }
9069
9070 if (h->needs_copy)
9071 {
9072 Elf_Internal_Rela rela;
5474d94f 9073 asection *s;
a06ea964
NC		 9074 bfd_byte *loc;
9075
9076 /* This symbol needs a copy reloc. Set it up. */
a06ea964
NC		 9077 if (h->dynindx == -1
9078 || (h->root.type != bfd_link_hash_defined
9079 && h->root.type != bfd_link_hash_defweak)
9d19e4fd 9080 || htab->root.srelbss == NULL)
a06ea964
NC		 9081 abort ();
9082
9083 rela.r_offset = (h->root.u.def.value
9084 + h->root.u.def.section->output_section->vma
9085 + h->root.u.def.section->output_offset);
a6bb11b2 9086 rela.r_info = ELFNN_R_INFO (h->dynindx, AARCH64_R (COPY));
a06ea964 9087 rela.r_addend = 0;
afbf7e8e 9088 if (h->root.u.def.section == htab->root.sdynrelro)
5474d94f
AM		 9089 s = htab->root.sreldynrelro;
9090 else
9091 s = htab->root.srelbss;
9092 loc = s->contents + s->reloc_count++ * RELOC_SIZE (htab);
cec5225b 9093 bfd_elfNN_swap_reloca_out (output_bfd, &rela, loc);
a06ea964
NC		 9094 }
9095
9096 /* Mark _DYNAMIC and _GLOBAL_OFFSET_TABLE_ as absolute. SYM may
9097 be NULL for local symbols. */
9098 if (sym != NULL
9637f6ef 9099 && (h == elf_hash_table (info)->hdynamic
a06ea964
NC		 9100 || h == elf_hash_table (info)->hgot))
9101 sym->st_shndx = SHN_ABS;
9102
9103 return TRUE;
9104}
9105
1419bbe5
WN		 9106/* Finish up local dynamic symbol handling. We set the contents of
9107 various dynamic sections here. */
9108
9109static bfd_boolean
9110elfNN_aarch64_finish_local_dynamic_symbol (void **slot, void *inf)
9111{
9112 struct elf_link_hash_entry *h
9113 = (struct elf_link_hash_entry *) *slot;
9114 struct bfd_link_info *info
9115 = (struct bfd_link_info *) inf;
9116
9117 return elfNN_aarch64_finish_dynamic_symbol (info->output_bfd,
9118 info, h, NULL);
9119}
9120
a06ea964 9121static void
cec5225b
YZ		 9122elfNN_aarch64_init_small_plt0_entry (bfd *output_bfd ATTRIBUTE_UNUSED,
9123 struct elf_aarch64_link_hash_table
a06ea964
NC		 9124 *htab)
9125{
9126 /* Fill in PLT0. Fixme:RR Note this doesn't distinguish between
9127 small and large plts and at the minute just generates
9128 the small PLT. */
9129
cec5225b 9130 /* PLT0 of the small PLT looks like this in ELF64 -
a06ea964
NC		 9131 stp x16, x30, [sp, #-16]! // Save the reloc and lr on stack.
9132 adrp x16, PLT_GOT + 16 // Get the page base of the GOTPLT
9133 ldr x17, [x16, #:lo12:PLT_GOT+16] // Load the address of the
9134 // symbol resolver
9135 add x16, x16, #:lo12:PLT_GOT+16 // Load the lo12 bits of the
9136 // GOTPLT entry for this.
9137 br x17
cec5225b 9138 PLT0 will be slightly different in ELF32 due to different got entry
2d0ca824 9139 size. */
caed7120 9140 bfd_vma plt_got_2nd_ent; /* Address of GOT[2]. */
a06ea964
NC		 9141 bfd_vma plt_base;
9142
9143
cec5225b 9144 memcpy (htab->root.splt->contents, elfNN_aarch64_small_plt0_entry,
a06ea964
NC		 9145 PLT_ENTRY_SIZE);
9146 elf_section_data (htab->root.splt->output_section)->this_hdr.sh_entsize =
9147 PLT_ENTRY_SIZE;
9148
caed7120
YZ		 9149 plt_got_2nd_ent = (htab->root.sgotplt->output_section->vma
9150 + htab->root.sgotplt->output_offset
9151 + GOT_ENTRY_SIZE * 2);
a06ea964
NC		 9152
9153 plt_base = htab->root.splt->output_section->vma +
f44a1f8e 9154 htab->root.splt->output_offset;
a06ea964
NC		 9155
9156 /* Fill in the top 21 bits for this: ADRP x16, PLT_GOT + n * 8.
9157 ADRP: ((PG(S+A)-PG(P)) >> 12) & 0x1fffff */
caed7120
YZ		 9158 elf_aarch64_update_plt_entry (output_bfd, BFD_RELOC_AARCH64_ADR_HI21_PCREL,
9159 htab->root.splt->contents + 4,
9160 PG (plt_got_2nd_ent) - PG (plt_base + 4));
a06ea964 9161
caed7120
YZ		 9162 elf_aarch64_update_plt_entry (output_bfd, BFD_RELOC_AARCH64_LDSTNN_LO12,
9163 htab->root.splt->contents + 8,
9164 PG_OFFSET (plt_got_2nd_ent));
a06ea964 9165
caed7120
YZ		 9166 elf_aarch64_update_plt_entry (output_bfd, BFD_RELOC_AARCH64_ADD_LO12,
9167 htab->root.splt->contents + 12,
9168 PG_OFFSET (plt_got_2nd_ent));
a06ea964
NC		 9169}
9170
9171static bfd_boolean
cec5225b 9172elfNN_aarch64_finish_dynamic_sections (bfd *output_bfd,
a06ea964
NC		 9173 struct bfd_link_info *info)
9174{
cec5225b 9175 struct elf_aarch64_link_hash_table *htab;
a06ea964
NC		 9176 bfd *dynobj;
9177 asection *sdyn;
9178
cec5225b 9179 htab = elf_aarch64_hash_table (info);
a06ea964
NC		 9180 dynobj = htab->root.dynobj;
9181 sdyn = bfd_get_linker_section (dynobj, ".dynamic");
9182
9183 if (htab->root.dynamic_sections_created)
9184 {
cec5225b 9185 ElfNN_External_Dyn *dyncon, *dynconend;
a06ea964
NC		 9186
9187 if (sdyn == NULL || htab->root.sgot == NULL)
9188 abort ();
9189
cec5225b
YZ		 9190 dyncon = (ElfNN_External_Dyn *) sdyn->contents;
9191 dynconend = (ElfNN_External_Dyn *) (sdyn->contents + sdyn->size);
a06ea964
NC		 9192 for (; dyncon < dynconend; dyncon++)
9193 {
9194 Elf_Internal_Dyn dyn;
9195 asection *s;
9196
cec5225b 9197 bfd_elfNN_swap_dyn_in (dynobj, dyncon, &dyn);
a06ea964
NC		 9198
9199 switch (dyn.d_tag)
9200 {
9201 default:
9202 continue;
9203
9204 case DT_PLTGOT:
9205 s = htab->root.sgotplt;
9206 dyn.d_un.d_ptr = s->output_section->vma + s->output_offset;
9207 break;
9208
9209 case DT_JMPREL:
4ade44b7
AM		 9210 s = htab->root.srelplt;
9211 dyn.d_un.d_ptr = s->output_section->vma + s->output_offset;
a06ea964
NC		 9212 break;
9213
9214 case DT_PLTRELSZ:
c955de36 9215 s = htab->root.srelplt;
a06ea964
NC		 9216 dyn.d_un.d_val = s->size;
9217 break;
9218
a06ea964
NC		 9219 case DT_TLSDESC_PLT:
9220 s = htab->root.splt;
9221 dyn.d_un.d_ptr = s->output_section->vma + s->output_offset
9222 + htab->tlsdesc_plt;
9223 break;
9224
9225 case DT_TLSDESC_GOT:
9226 s = htab->root.sgot;
9227 dyn.d_un.d_ptr = s->output_section->vma + s->output_offset
9228 + htab->dt_tlsdesc_got;
9229 break;
9230 }
9231
cec5225b 9232 bfd_elfNN_swap_dyn_out (output_bfd, &dyn, dyncon);
a06ea964
NC		 9233 }
9234
9235 }
9236
9237 /* Fill in the special first entry in the procedure linkage table. */
9238 if (htab->root.splt && htab->root.splt->size > 0)
9239 {
cec5225b 9240 elfNN_aarch64_init_small_plt0_entry (output_bfd, htab);
a06ea964
NC		 9241
9242 elf_section_data (htab->root.splt->output_section)->
9243 this_hdr.sh_entsize = htab->plt_entry_size;
9244
9245
9246 if (htab->tlsdesc_plt)
9247 {
cec5225b 9248 bfd_put_NN (output_bfd, (bfd_vma) 0,
a06ea964
NC		 9249 htab->root.sgot->contents + htab->dt_tlsdesc_got);
9250
9251 memcpy (htab->root.splt->contents + htab->tlsdesc_plt,
cec5225b
YZ		 9252 elfNN_aarch64_tlsdesc_small_plt_entry,
9253 sizeof (elfNN_aarch64_tlsdesc_small_plt_entry));
a06ea964
NC		 9254
9255 {
9256 bfd_vma adrp1_addr =
9257 htab->root.splt->output_section->vma
9258 + htab->root.splt->output_offset + htab->tlsdesc_plt + 4;
9259
caed7120 9260 bfd_vma adrp2_addr = adrp1_addr + 4;
a06ea964
NC		 9261
9262 bfd_vma got_addr =
9263 htab->root.sgot->output_section->vma
9264 + htab->root.sgot->output_offset;
9265
9266 bfd_vma pltgot_addr =
9267 htab->root.sgotplt->output_section->vma
9268 + htab->root.sgotplt->output_offset;
9269
9270 bfd_vma dt_tlsdesc_got = got_addr + htab->dt_tlsdesc_got;
caed7120
YZ		 9271
9272 bfd_byte *plt_entry =
9273 htab->root.splt->contents + htab->tlsdesc_plt;
a06ea964
NC		 9274
9275 /* adrp x2, DT_TLSDESC_GOT */
caed7120
YZ		 9276 elf_aarch64_update_plt_entry (output_bfd,
9277 BFD_RELOC_AARCH64_ADR_HI21_PCREL,
9278 plt_entry + 4,
9279 (PG (dt_tlsdesc_got)
9280 - PG (adrp1_addr)));
a06ea964
NC		 9281
9282 /* adrp x3, 0 */
caed7120
YZ		 9283 elf_aarch64_update_plt_entry (output_bfd,
9284 BFD_RELOC_AARCH64_ADR_HI21_PCREL,
9285 plt_entry + 8,
9286 (PG (pltgot_addr)
9287 - PG (adrp2_addr)));
a06ea964
NC		 9288
9289 /* ldr x2, [x2, #0] */
caed7120
YZ		 9290 elf_aarch64_update_plt_entry (output_bfd,
9291 BFD_RELOC_AARCH64_LDSTNN_LO12,
9292 plt_entry + 12,
9293 PG_OFFSET (dt_tlsdesc_got));
a06ea964
NC		 9294
9295 /* add x3, x3, 0 */
caed7120
YZ		 9296 elf_aarch64_update_plt_entry (output_bfd,
9297 BFD_RELOC_AARCH64_ADD_LO12,
9298 plt_entry + 16,
9299 PG_OFFSET (pltgot_addr));
a06ea964
NC		 9300 }
9301 }
9302 }
9303
9304 if (htab->root.sgotplt)
9305 {
9306 if (bfd_is_abs_section (htab->root.sgotplt->output_section))
9307 {
4eca0228 9308 _bfd_error_handler
871b3ab2 9309 (_("discarded output section: `%pA'"), htab->root.sgotplt);
a06ea964
NC		 9310 return FALSE;
9311 }
9312
9313 /* Fill in the first three entries in the global offset table. */
9314 if (htab->root.sgotplt->size > 0)
9315 {
8db339a6
MS		 9316 bfd_put_NN (output_bfd, (bfd_vma) 0, htab->root.sgotplt->contents);
9317
a06ea964 9318 /* Write GOT[1] and GOT[2], needed for the dynamic linker. */
cec5225b 9319 bfd_put_NN (output_bfd,
a06ea964
NC		 9320 (bfd_vma) 0,
9321 htab->root.sgotplt->contents + GOT_ENTRY_SIZE);
cec5225b 9322 bfd_put_NN (output_bfd,
a06ea964
NC		 9323 (bfd_vma) 0,
9324 htab->root.sgotplt->contents + GOT_ENTRY_SIZE * 2);
9325 }
9326
8db339a6
MS		 9327 if (htab->root.sgot)
9328 {
9329 if (htab->root.sgot->size > 0)
9330 {
9331 bfd_vma addr =
9332 sdyn ? sdyn->output_section->vma + sdyn->output_offset : 0;
9333 bfd_put_NN (output_bfd, addr, htab->root.sgot->contents);
9334 }
9335 }
9336
a06ea964
NC		 9337 elf_section_data (htab->root.sgotplt->output_section)->
9338 this_hdr.sh_entsize = GOT_ENTRY_SIZE;
9339 }
9340
9341 if (htab->root.sgot && htab->root.sgot->size > 0)
9342 elf_section_data (htab->root.sgot->output_section)->this_hdr.sh_entsize
9343 = GOT_ENTRY_SIZE;
9344
1419bbe5
WN		 9345 /* Fill PLT and GOT entries for local STT_GNU_IFUNC symbols. */
9346 htab_traverse (htab->loc_hash_table,
9347 elfNN_aarch64_finish_local_dynamic_symbol,
9348 info);
9349
a06ea964
NC		 9350 return TRUE;
9351}
9352
9353/* Return address for Ith PLT stub in section PLT, for relocation REL
9354 or (bfd_vma) -1 if it should not be included. */
9355
9356static bfd_vma
cec5225b 9357elfNN_aarch64_plt_sym_val (bfd_vma i, const asection *plt,
a06ea964
NC		 9358 const arelent *rel ATTRIBUTE_UNUSED)
9359{
9360 return plt->vma + PLT_ENTRY_SIZE + i * PLT_SMALL_ENTRY_SIZE;
9361}
9362
d691934d
NC		 9363/* Returns TRUE if NAME is an AArch64 mapping symbol.
9364 The ARM ELF standard defines $x (for A64 code) and $d (for data).
9365 It also allows a period initiated suffix to be added to the symbol, ie:
9366 "$[adtx]\.[:sym_char]+". */
9367
9368static bfd_boolean
9369is_aarch64_mapping_symbol (const char * name)
9370{
9371 return name != NULL /* Paranoia. */
9372 && name[0] == '$' /* Note: if objcopy --prefix-symbols has been used then
9373 the mapping symbols could have acquired a prefix.
9374 We do not support this here, since such symbols no
9375 longer conform to the ARM ELF ABI. */
9376 && (name[1] == 'd' || name[1] == 'x')
9377 && (name[2] == 0 || name[2] == '.');
9378 /* FIXME: Strictly speaking the symbol is only a valid mapping symbol if
9379 any characters that follow the period are legal characters for the body
9380 of a symbol's name. For now we just assume that this is the case. */
9381}
9382
9383/* Make sure that mapping symbols in object files are not removed via the
9384 "strip --strip-unneeded" tool. These symbols might needed in order to
9385 correctly generate linked files. Once an object file has been linked,
9386 it should be safe to remove them. */
9387
9388static void
9389elfNN_aarch64_backend_symbol_processing (bfd *abfd, asymbol *sym)
9390{
9391 if (((abfd->flags & (EXEC_P | DYNAMIC)) == 0)
9392 && sym->section != bfd_abs_section_ptr
9393 && is_aarch64_mapping_symbol (sym->name))
9394 sym->flags |= BSF_KEEP;
9395}
9396
a06ea964
NC		 9397
9398/* We use this so we can override certain functions
9399 (though currently we don't). */
9400
cec5225b 9401const struct elf_size_info elfNN_aarch64_size_info =
a06ea964 9402{
cec5225b
YZ		 9403 sizeof (ElfNN_External_Ehdr),
9404 sizeof (ElfNN_External_Phdr),
9405 sizeof (ElfNN_External_Shdr),
9406 sizeof (ElfNN_External_Rel),
9407 sizeof (ElfNN_External_Rela),
9408 sizeof (ElfNN_External_Sym),
9409 sizeof (ElfNN_External_Dyn),
a06ea964
NC		 9410 sizeof (Elf_External_Note),
9411 4, /* Hash table entry size. */
9412 1, /* Internal relocs per external relocs. */
cec5225b
YZ		 9413 ARCH_SIZE, /* Arch size. */
9414 LOG_FILE_ALIGN, /* Log_file_align. */
9415 ELFCLASSNN, EV_CURRENT,
9416 bfd_elfNN_write_out_phdrs,
9417 bfd_elfNN_write_shdrs_and_ehdr,
9418 bfd_elfNN_checksum_contents,
9419 bfd_elfNN_write_relocs,
9420 bfd_elfNN_swap_symbol_in,
9421 bfd_elfNN_swap_symbol_out,
9422 bfd_elfNN_slurp_reloc_table,
9423 bfd_elfNN_slurp_symbol_table,
9424 bfd_elfNN_swap_dyn_in,
9425 bfd_elfNN_swap_dyn_out,
9426 bfd_elfNN_swap_reloc_in,
9427 bfd_elfNN_swap_reloc_out,
9428 bfd_elfNN_swap_reloca_in,
9429 bfd_elfNN_swap_reloca_out
a06ea964
NC		 9430};
9431
9432#define ELF_ARCH bfd_arch_aarch64
9433#define ELF_MACHINE_CODE EM_AARCH64
9434#define ELF_MAXPAGESIZE 0x10000
9435#define ELF_MINPAGESIZE 0x1000
9436#define ELF_COMMONPAGESIZE 0x1000
9437
07d6d2b8 9438#define bfd_elfNN_close_and_cleanup \
cec5225b 9439 elfNN_aarch64_close_and_cleanup
a06ea964 9440
07d6d2b8 9441#define bfd_elfNN_bfd_free_cached_info \
cec5225b 9442 elfNN_aarch64_bfd_free_cached_info
a06ea964 9443
cec5225b
YZ		 9444#define bfd_elfNN_bfd_is_target_special_symbol \
9445 elfNN_aarch64_is_target_special_symbol
a06ea964 9446
07d6d2b8 9447#define bfd_elfNN_bfd_link_hash_table_create \
cec5225b 9448 elfNN_aarch64_link_hash_table_create
a06ea964 9449
cec5225b
YZ		 9450#define bfd_elfNN_bfd_merge_private_bfd_data \
9451 elfNN_aarch64_merge_private_bfd_data
a06ea964 9452
cec5225b
YZ		 9453#define bfd_elfNN_bfd_print_private_bfd_data \
9454 elfNN_aarch64_print_private_bfd_data
a06ea964 9455
cec5225b
YZ		 9456#define bfd_elfNN_bfd_reloc_type_lookup \
9457 elfNN_aarch64_reloc_type_lookup
a06ea964 9458
cec5225b
YZ		 9459#define bfd_elfNN_bfd_reloc_name_lookup \
9460 elfNN_aarch64_reloc_name_lookup
a06ea964 9461
cec5225b
YZ		 9462#define bfd_elfNN_bfd_set_private_flags \
9463 elfNN_aarch64_set_private_flags
a06ea964 9464
cec5225b
YZ		 9465#define bfd_elfNN_find_inliner_info \
9466 elfNN_aarch64_find_inliner_info
a06ea964 9467
cec5225b
YZ		 9468#define bfd_elfNN_find_nearest_line \
9469 elfNN_aarch64_find_nearest_line
a06ea964 9470
cec5225b
YZ		 9471#define bfd_elfNN_mkobject \
9472 elfNN_aarch64_mkobject
a06ea964 9473
cec5225b
YZ		 9474#define bfd_elfNN_new_section_hook \
9475 elfNN_aarch64_new_section_hook
a06ea964
NC		 9476
9477#define elf_backend_adjust_dynamic_symbol \
cec5225b 9478 elfNN_aarch64_adjust_dynamic_symbol
a06ea964
NC		 9479
9480#define elf_backend_always_size_sections \
cec5225b 9481 elfNN_aarch64_always_size_sections
a06ea964
NC		 9482
9483#define elf_backend_check_relocs \
cec5225b 9484 elfNN_aarch64_check_relocs
a06ea964
NC		 9485
9486#define elf_backend_copy_indirect_symbol \
cec5225b 9487 elfNN_aarch64_copy_indirect_symbol
a06ea964
NC		 9488
9489/* Create .dynbss, and .rela.bss sections in DYNOBJ, and set up shortcuts
9490 to them in our hash. */
9491#define elf_backend_create_dynamic_sections \
cec5225b 9492 elfNN_aarch64_create_dynamic_sections
a06ea964
NC		 9493
9494#define elf_backend_init_index_section \
9495 _bfd_elf_init_2_index_sections
9496
a06ea964 9497#define elf_backend_finish_dynamic_sections \
cec5225b 9498 elfNN_aarch64_finish_dynamic_sections
a06ea964
NC		 9499
9500#define elf_backend_finish_dynamic_symbol \
cec5225b 9501 elfNN_aarch64_finish_dynamic_symbol
a06ea964 9502
a06ea964 9503#define elf_backend_object_p \
cec5225b 9504 elfNN_aarch64_object_p
a06ea964 9505
07d6d2b8 9506#define elf_backend_output_arch_local_syms \
cec5225b 9507 elfNN_aarch64_output_arch_local_syms
a06ea964
NC		 9508
9509#define elf_backend_plt_sym_val \
cec5225b 9510 elfNN_aarch64_plt_sym_val
a06ea964
NC		 9511
9512#define elf_backend_post_process_headers \
cec5225b 9513 elfNN_aarch64_post_process_headers
a06ea964
NC		 9514
9515#define elf_backend_relocate_section \
cec5225b 9516 elfNN_aarch64_relocate_section
a06ea964
NC		 9517
9518#define elf_backend_reloc_type_class \
cec5225b 9519 elfNN_aarch64_reloc_type_class
a06ea964 9520
a06ea964 9521#define elf_backend_section_from_shdr \
cec5225b 9522 elfNN_aarch64_section_from_shdr
a06ea964
NC		 9523
9524#define elf_backend_size_dynamic_sections \
cec5225b 9525 elfNN_aarch64_size_dynamic_sections
a06ea964
NC		 9526
9527#define elf_backend_size_info \
cec5225b 9528 elfNN_aarch64_size_info
a06ea964 9529
68fcca92
JW		 9530#define elf_backend_write_section \
9531 elfNN_aarch64_write_section
9532
d691934d
NC		 9533#define elf_backend_symbol_processing \
9534 elfNN_aarch64_backend_symbol_processing
9535
a06ea964 9536#define elf_backend_can_refcount 1
59c108f7 9537#define elf_backend_can_gc_sections 1
a06ea964
NC		 9538#define elf_backend_plt_readonly 1
9539#define elf_backend_want_got_plt 1
9540#define elf_backend_want_plt_sym 0
5474d94f 9541#define elf_backend_want_dynrelro 1
a06ea964
NC		 9542#define elf_backend_may_use_rel_p 0
9543#define elf_backend_may_use_rela_p 1
9544#define elf_backend_default_use_rela_p 1
07d6d2b8 9545#define elf_backend_rela_normal 1
64f52338 9546#define elf_backend_dtrel_excludes_plt 1
a06ea964 9547#define elf_backend_got_header_size (GOT_ENTRY_SIZE * 3)
c495064d 9548#define elf_backend_default_execstack 0
32f573bc 9549#define elf_backend_extern_protected_data 1
7f784814 9550#define elf_backend_hash_symbol elf_aarch64_hash_symbol
a06ea964 9551
07d6d2b8 9552#undef elf_backend_obj_attrs_section
a06ea964
NC		 9553#define elf_backend_obj_attrs_section ".ARM.attributes"
9554
cec5225b 9555#include "elfNN-target.h"
a75cf613
ES		 9556
9557/* CloudABI support. */
9558
9559#undef TARGET_LITTLE_SYM
9560#define TARGET_LITTLE_SYM aarch64_elfNN_le_cloudabi_vec
9561#undef TARGET_LITTLE_NAME
9562#define TARGET_LITTLE_NAME "elfNN-littleaarch64-cloudabi"
9563#undef TARGET_BIG_SYM
9564#define TARGET_BIG_SYM aarch64_elfNN_be_cloudabi_vec
9565#undef TARGET_BIG_NAME
9566#define TARGET_BIG_NAME "elfNN-bigaarch64-cloudabi"
9567
9568#undef ELF_OSABI
9569#define ELF_OSABI ELFOSABI_CLOUDABI
9570
9571#undef elfNN_bed
9572#define elfNN_bed elfNN_aarch64_cloudabi_bed
9573
9574#include "elfNN-target.h"
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