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x86: Treat relocation against IFUNC symbol as FUNC
[deliverable/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
9a2ebffd
JW		 3816 /* Add space for a branch. Add 8 bytes to keep section 8 byte aligned,
3817 as long branch stubs contain a 64-bit address. */
61865519 3818 if (section->size)
9a2ebffd 3819 section->size += 8;
4106101c
MS		 3820
3821 /* Ensure all stub sections have a size which is a multiple of
3822 4096. This is important in order to ensure that the insertion
3823 of stub sections does not in itself move existing code around
3824 in such a way that new errata sequences are created. */
3825 if (htab->fix_erratum_843419)
3826 if (section->size)
3827 section->size = BFD_ALIGN (section->size, 0x1000);
3828 }
3829}
3830
9a2ebffd 3831/* Construct an erratum 843419 workaround stub name. */
4106101c
MS		 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 4372
9a2ebffd
JW		 4373 /* Add a branch around the stub section, and a nop, to keep it 8 byte
4374 aligned, as long branch stubs contain a 64-bit address. */
61865519 4375 bfd_putl32 (0x14000000 | (size >> 2), stub_sec->contents);
9a2ebffd
JW		 4376 bfd_putl32 (INSN_NOP, stub_sec->contents + 4);
4377 stub_sec->size += 8;
a06ea964
NC		 4378 }
4379
4380 /* Build the stubs as directed by the stub hash table. */
4381 table = &htab->stub_hash_table;
4382 bfd_hash_traverse (table, aarch64_build_one_stub, info);
4383
4384 return TRUE;
4385}
4386
4387
4388/* Add an entry to the code/data map for section SEC. */
4389
4390static void
cec5225b 4391elfNN_aarch64_section_map_add (asection *sec, char type, bfd_vma vma)
a06ea964
NC		 4392{
4393 struct _aarch64_elf_section_data *sec_data =
cec5225b 4394 elf_aarch64_section_data (sec);
a06ea964
NC		 4395 unsigned int newidx;
4396
4397 if (sec_data->map == NULL)
4398 {
cec5225b 4399 sec_data->map = bfd_malloc (sizeof (elf_aarch64_section_map));
a06ea964
NC		 4400 sec_data->mapcount = 0;
4401 sec_data->mapsize = 1;
4402 }
4403
4404 newidx = sec_data->mapcount++;
4405
4406 if (sec_data->mapcount > sec_data->mapsize)
4407 {
4408 sec_data->mapsize *= 2;
4409 sec_data->map = bfd_realloc_or_free
cec5225b 4410 (sec_data->map, sec_data->mapsize * sizeof (elf_aarch64_section_map));
a06ea964
NC		 4411 }
4412
4413 if (sec_data->map)
4414 {
4415 sec_data->map[newidx].vma = vma;
4416 sec_data->map[newidx].type = type;
4417 }
4418}
4419
4420
4421/* Initialise maps of insn/data for input BFDs. */
4422void
cec5225b 4423bfd_elfNN_aarch64_init_maps (bfd *abfd)
a06ea964
NC		 4424{
4425 Elf_Internal_Sym *isymbuf;
4426 Elf_Internal_Shdr *hdr;
4427 unsigned int i, localsyms;
4428
4429 /* Make sure that we are dealing with an AArch64 elf binary. */
4430 if (!is_aarch64_elf (abfd))
4431 return;
4432
4433 if ((abfd->flags & DYNAMIC) != 0)
68fcca92 4434 return;
a06ea964
NC		 4435
4436 hdr = &elf_symtab_hdr (abfd);
4437 localsyms = hdr->sh_info;
4438
4439 /* Obtain a buffer full of symbols for this BFD. The hdr->sh_info field
4440 should contain the number of local symbols, which should come before any
4441 global symbols. Mapping symbols are always local. */
4442 isymbuf = bfd_elf_get_elf_syms (abfd, hdr, localsyms, 0, NULL, NULL, NULL);
4443
4444 /* No internal symbols read? Skip this BFD. */
4445 if (isymbuf == NULL)
4446 return;
4447
4448 for (i = 0; i < localsyms; i++)
4449 {
4450 Elf_Internal_Sym *isym = &isymbuf[i];
4451 asection *sec = bfd_section_from_elf_index (abfd, isym->st_shndx);
4452 const char *name;
4453
4454 if (sec != NULL && ELF_ST_BIND (isym->st_info) == STB_LOCAL)
4455 {
4456 name = bfd_elf_string_from_elf_section (abfd,
4457 hdr->sh_link,
4458 isym->st_name);
4459
4460 if (bfd_is_aarch64_special_symbol_name
4461 (name, BFD_AARCH64_SPECIAL_SYM_TYPE_MAP))
cec5225b 4462 elfNN_aarch64_section_map_add (sec, name[1], isym->st_value);
a06ea964
NC		 4463 }
4464 }
4465}
4466
4467/* Set option values needed during linking. */
4468void
cec5225b 4469bfd_elfNN_aarch64_set_options (struct bfd *output_bfd,
a06ea964
NC		 4470 struct bfd_link_info *link_info,
4471 int no_enum_warn,
68fcca92 4472 int no_wchar_warn, int pic_veneer,
4106101c 4473 int fix_erratum_835769,
1f56df9d
JW		 4474 int fix_erratum_843419,
4475 int no_apply_dynamic_relocs)
a06ea964 4476{
cec5225b 4477 struct elf_aarch64_link_hash_table *globals;
a06ea964 4478
cec5225b 4479 globals = elf_aarch64_hash_table (link_info);
a06ea964 4480 globals->pic_veneer = pic_veneer;
68fcca92 4481 globals->fix_erratum_835769 = fix_erratum_835769;
4106101c
MS		 4482 globals->fix_erratum_843419 = fix_erratum_843419;
4483 globals->fix_erratum_843419_adr = TRUE;
1f56df9d 4484 globals->no_apply_dynamic_relocs = no_apply_dynamic_relocs;
a06ea964
NC		 4485
4486 BFD_ASSERT (is_aarch64_elf (output_bfd));
4487 elf_aarch64_tdata (output_bfd)->no_enum_size_warning = no_enum_warn;
4488 elf_aarch64_tdata (output_bfd)->no_wchar_size_warning = no_wchar_warn;
4489}
4490
a06ea964
NC		 4491static bfd_vma
4492aarch64_calculate_got_entry_vma (struct elf_link_hash_entry *h,
cec5225b 4493 struct elf_aarch64_link_hash_table
a06ea964
NC		 4494 *globals, struct bfd_link_info *info,
4495 bfd_vma value, bfd *output_bfd,
4496 bfd_boolean *unresolved_reloc_p)
4497{
4498 bfd_vma off = (bfd_vma) - 1;
4499 asection *basegot = globals->root.sgot;
4500 bfd_boolean dyn = globals->root.dynamic_sections_created;
4501
4502 if (h != NULL)
4503 {
a6bb11b2 4504 BFD_ASSERT (basegot != NULL);
a06ea964
NC		 4505 off = h->got.offset;
4506 BFD_ASSERT (off != (bfd_vma) - 1);
0e1862bb
L		 4507 if (!WILL_CALL_FINISH_DYNAMIC_SYMBOL (dyn, bfd_link_pic (info), h)
4508 || (bfd_link_pic (info)
a06ea964
NC		 4509 && SYMBOL_REFERENCES_LOCAL (info, h))
4510 || (ELF_ST_VISIBILITY (h->other)
4511 && h->root.type == bfd_link_hash_undefweak))
4512 {
4513 /* This is actually a static link, or it is a -Bsymbolic link
4514 and the symbol is defined locally. We must initialize this
4515 entry in the global offset table. Since the offset must
a6bb11b2
YZ		 4516 always be a multiple of 8 (4 in the case of ILP32), we use
4517 the least significant bit to record whether we have
4518 initialized it already.
a06ea964
NC		 4519 When doing a dynamic link, we create a .rel(a).got relocation
4520 entry to initialize the value. This is done in the
4521 finish_dynamic_symbol routine. */
4522 if ((off & 1) != 0)
4523 off &= ~1;
4524 else
4525 {
cec5225b 4526 bfd_put_NN (output_bfd, value, basegot->contents + off);
a06ea964
NC		 4527 h->got.offset |= 1;
4528 }
4529 }
4530 else
4531 *unresolved_reloc_p = FALSE;
4532
4533 off = off + basegot->output_section->vma + basegot->output_offset;
4534 }
4535
4536 return off;
4537}
4538
4539/* Change R_TYPE to a more efficient access model where possible,
4540 return the new reloc type. */
4541
a6bb11b2
YZ		 4542static bfd_reloc_code_real_type
4543aarch64_tls_transition_without_check (bfd_reloc_code_real_type r_type,
a06ea964
NC		 4544 struct elf_link_hash_entry *h)
4545{
4546 bfd_boolean is_local = h == NULL;
a6bb11b2 4547
a06ea964
NC		 4548 switch (r_type)
4549 {
a6bb11b2 4550 case BFD_RELOC_AARCH64_TLSDESC_ADR_PAGE21:
ce336788 4551 case BFD_RELOC_AARCH64_TLSGD_ADR_PAGE21:
a6bb11b2
YZ		 4552 return (is_local
4553 ? BFD_RELOC_AARCH64_TLSLE_MOVW_TPREL_G1
4554 : BFD_RELOC_AARCH64_TLSIE_ADR_GOTTPREL_PAGE21);
4555
389b8029
MS		 4556 case BFD_RELOC_AARCH64_TLSDESC_ADR_PREL21:
4557 return (is_local
4558 ? BFD_RELOC_AARCH64_TLSLE_MOVW_TPREL_G0_NC
4559 : r_type);
4560
1ada945d
MS		 4561 case BFD_RELOC_AARCH64_TLSDESC_LD_PREL19:
4562 return (is_local
4563 ? BFD_RELOC_AARCH64_TLSLE_MOVW_TPREL_G1
4564 : BFD_RELOC_AARCH64_TLSIE_LD_GOTTPREL_PREL19);
4565
0484b454
RL		 4566 case BFD_RELOC_AARCH64_TLSDESC_LDR:
4567 return (is_local
4568 ? BFD_RELOC_AARCH64_TLSLE_MOVW_TPREL_G0_NC
4569 : BFD_RELOC_AARCH64_NONE);
4570
4571 case BFD_RELOC_AARCH64_TLSDESC_OFF_G0_NC:
4572 return (is_local
4573 ? BFD_RELOC_AARCH64_TLSLE_MOVW_TPREL_G1_NC
4574 : BFD_RELOC_AARCH64_TLSIE_MOVW_GOTTPREL_G0_NC);
4575
4576 case BFD_RELOC_AARCH64_TLSDESC_OFF_G1:
4577 return (is_local
4578 ? BFD_RELOC_AARCH64_TLSLE_MOVW_TPREL_G2
4579 : BFD_RELOC_AARCH64_TLSIE_MOVW_GOTTPREL_G1);
4580
a6bb11b2 4581 case BFD_RELOC_AARCH64_TLSDESC_LDNN_LO12_NC:
ce336788 4582 case BFD_RELOC_AARCH64_TLSGD_ADD_LO12_NC:
a6bb11b2
YZ		 4583 return (is_local
4584 ? BFD_RELOC_AARCH64_TLSLE_MOVW_TPREL_G0_NC
4585 : BFD_RELOC_AARCH64_TLSIE_LDNN_GOTTPREL_LO12_NC);
4586
4587 case BFD_RELOC_AARCH64_TLSIE_ADR_GOTTPREL_PAGE21:
4588 return is_local ? BFD_RELOC_AARCH64_TLSLE_MOVW_TPREL_G1 : r_type;
4589
4590 case BFD_RELOC_AARCH64_TLSIE_LDNN_GOTTPREL_LO12_NC:
4591 return is_local ? BFD_RELOC_AARCH64_TLSLE_MOVW_TPREL_G0_NC : r_type;
4592
043bf05a
MS		 4593 case BFD_RELOC_AARCH64_TLSIE_LD_GOTTPREL_PREL19:
4594 return r_type;
4595
3c12b054
MS		 4596 case BFD_RELOC_AARCH64_TLSGD_ADR_PREL21:
4597 return (is_local
4598 ? BFD_RELOC_AARCH64_TLSLE_ADD_TPREL_HI12
4599 : BFD_RELOC_AARCH64_TLSIE_LD_GOTTPREL_PREL19);
4600
0484b454 4601 case BFD_RELOC_AARCH64_TLSDESC_ADD:
f955cccf 4602 case BFD_RELOC_AARCH64_TLSDESC_ADD_LO12:
a6bb11b2 4603 case BFD_RELOC_AARCH64_TLSDESC_CALL:
a06ea964 4604 /* Instructions with these relocations will become NOPs. */
a6bb11b2
YZ		 4605 return BFD_RELOC_AARCH64_NONE;
4606
259364ad
JW		 4607 case BFD_RELOC_AARCH64_TLSLD_ADD_LO12_NC:
4608 case BFD_RELOC_AARCH64_TLSLD_ADR_PAGE21:
4609 case BFD_RELOC_AARCH64_TLSLD_ADR_PREL21:
4610 return is_local ? BFD_RELOC_AARCH64_NONE : r_type;
4611
ac734732
RL		 4612#if ARCH_SIZE == 64
4613 case BFD_RELOC_AARCH64_TLSGD_MOVW_G0_NC:
4614 return is_local
4615 ? BFD_RELOC_AARCH64_TLSLE_MOVW_TPREL_G1_NC
4616 : BFD_RELOC_AARCH64_TLSIE_MOVW_GOTTPREL_G0_NC;
4617
4618 case BFD_RELOC_AARCH64_TLSGD_MOVW_G1:
4619 return is_local
4620 ? BFD_RELOC_AARCH64_TLSLE_MOVW_TPREL_G2
4621 : BFD_RELOC_AARCH64_TLSIE_MOVW_GOTTPREL_G1;
4622#endif
4623
a6bb11b2
YZ		 4624 default:
4625 break;
a06ea964
NC		 4626 }
4627
4628 return r_type;
4629}
4630
4631static unsigned int
a6bb11b2 4632aarch64_reloc_got_type (bfd_reloc_code_real_type r_type)
a06ea964
NC		 4633{
4634 switch (r_type)
4635 {
a6bb11b2
YZ		 4636 case BFD_RELOC_AARCH64_ADR_GOT_PAGE:
4637 case BFD_RELOC_AARCH64_GOT_LD_PREL19:
7018c030 4638 case BFD_RELOC_AARCH64_LD32_GOTPAGE_LO14:
ce336788 4639 case BFD_RELOC_AARCH64_LD32_GOT_LO12_NC:
a2e1db00 4640 case BFD_RELOC_AARCH64_LD64_GOTOFF_LO15:
99ad26cb 4641 case BFD_RELOC_AARCH64_LD64_GOTPAGE_LO15:
ce336788 4642 case BFD_RELOC_AARCH64_LD64_GOT_LO12_NC:
dc8008f5 4643 case BFD_RELOC_AARCH64_MOVW_GOTOFF_G0_NC:
74a1bfe1 4644 case BFD_RELOC_AARCH64_MOVW_GOTOFF_G1:
a06ea964
NC		 4645 return GOT_NORMAL;
4646
ce336788 4647 case BFD_RELOC_AARCH64_TLSGD_ADD_LO12_NC:
a6bb11b2 4648 case BFD_RELOC_AARCH64_TLSGD_ADR_PAGE21:
3c12b054 4649 case BFD_RELOC_AARCH64_TLSGD_ADR_PREL21:
7ba7cfe4 4650 case BFD_RELOC_AARCH64_TLSGD_MOVW_G0_NC:
94facae3 4651 case BFD_RELOC_AARCH64_TLSGD_MOVW_G1:
73f925cc 4652 case BFD_RELOC_AARCH64_TLSLD_ADD_LO12_NC:
f69e4920 4653 case BFD_RELOC_AARCH64_TLSLD_ADR_PAGE21:
77a69ff8 4654 case BFD_RELOC_AARCH64_TLSLD_ADR_PREL21:
a06ea964
NC		 4655 return GOT_TLS_GD;
4656
0484b454 4657 case BFD_RELOC_AARCH64_TLSDESC_ADD:
f955cccf 4658 case BFD_RELOC_AARCH64_TLSDESC_ADD_LO12:
a6bb11b2 4659 case BFD_RELOC_AARCH64_TLSDESC_ADR_PAGE21:
389b8029 4660 case BFD_RELOC_AARCH64_TLSDESC_ADR_PREL21:
a6bb11b2 4661 case BFD_RELOC_AARCH64_TLSDESC_CALL:
a6bb11b2 4662 case BFD_RELOC_AARCH64_TLSDESC_LD32_LO12_NC:
f955cccf 4663 case BFD_RELOC_AARCH64_TLSDESC_LD64_LO12:
1ada945d 4664 case BFD_RELOC_AARCH64_TLSDESC_LD_PREL19:
0484b454
RL		 4665 case BFD_RELOC_AARCH64_TLSDESC_LDR:
4666 case BFD_RELOC_AARCH64_TLSDESC_OFF_G0_NC:
4667 case BFD_RELOC_AARCH64_TLSDESC_OFF_G1:
a06ea964
NC		 4668 return GOT_TLSDESC_GD;
4669
a6bb11b2 4670 case BFD_RELOC_AARCH64_TLSIE_ADR_GOTTPREL_PAGE21:
a6bb11b2 4671 case BFD_RELOC_AARCH64_TLSIE_LD32_GOTTPREL_LO12_NC:
ce336788 4672 case BFD_RELOC_AARCH64_TLSIE_LD64_GOTTPREL_LO12_NC:
043bf05a 4673 case BFD_RELOC_AARCH64_TLSIE_LD_GOTTPREL_PREL19:
3b957e5b
RL		 4674 case BFD_RELOC_AARCH64_TLSIE_MOVW_GOTTPREL_G0_NC:
4675 case BFD_RELOC_AARCH64_TLSIE_MOVW_GOTTPREL_G1:
a06ea964
NC		 4676 return GOT_TLS_IE;
4677
a6bb11b2
YZ		 4678 default:
4679 break;
a06ea964
NC		 4680 }
4681 return GOT_UNKNOWN;
4682}
4683
4684static bfd_boolean
4685aarch64_can_relax_tls (bfd *input_bfd,
4686 struct bfd_link_info *info,
a6bb11b2 4687 bfd_reloc_code_real_type r_type,
a06ea964
NC		 4688 struct elf_link_hash_entry *h,
4689 unsigned long r_symndx)
4690{
4691 unsigned int symbol_got_type;
4692 unsigned int reloc_got_type;
4693
9331eea1 4694 if (! IS_AARCH64_TLS_RELAX_RELOC (r_type))
a06ea964
NC		 4695 return FALSE;
4696
cec5225b 4697 symbol_got_type = elfNN_aarch64_symbol_got_type (h, input_bfd, r_symndx);
a06ea964
NC		 4698 reloc_got_type = aarch64_reloc_got_type (r_type);
4699
4700 if (symbol_got_type == GOT_TLS_IE && GOT_TLS_GD_ANY_P (reloc_got_type))
4701 return TRUE;
4702
6dda7875 4703 if (!bfd_link_executable (info))
a06ea964
NC		 4704 return FALSE;
4705
4706 if (h && h->root.type == bfd_link_hash_undefweak)
4707 return FALSE;
4708
4709 return TRUE;
4710}
4711
a6bb11b2
YZ		 4712/* Given the relocation code R_TYPE, return the relaxed bfd reloc
4713 enumerator. */
4714
4715static bfd_reloc_code_real_type
a06ea964
NC		 4716aarch64_tls_transition (bfd *input_bfd,
4717 struct bfd_link_info *info,
4718 unsigned int r_type,
4719 struct elf_link_hash_entry *h,
4720 unsigned long r_symndx)
4721{
a6bb11b2 4722 bfd_reloc_code_real_type bfd_r_type
0aa13fee 4723 = elfNN_aarch64_bfd_reloc_from_type (input_bfd, r_type);
a06ea964 4724
a6bb11b2
YZ		 4725 if (! aarch64_can_relax_tls (input_bfd, info, bfd_r_type, h, r_symndx))
4726 return bfd_r_type;
4727
4728 return aarch64_tls_transition_without_check (bfd_r_type, h);
a06ea964
NC		 4729}
4730
4731/* Return the base VMA address which should be subtracted from real addresses
a6bb11b2 4732 when resolving R_AARCH64_TLS_DTPREL relocation. */
a06ea964
NC		 4733
4734static bfd_vma
4735dtpoff_base (struct bfd_link_info *info)
4736{
4737 /* If tls_sec is NULL, we should have signalled an error already. */
4738 BFD_ASSERT (elf_hash_table (info)->tls_sec != NULL);
4739 return elf_hash_table (info)->tls_sec->vma;
4740}
4741
a06ea964
NC		 4742/* Return the base VMA address which should be subtracted from real addresses
4743 when resolving R_AARCH64_TLS_GOTTPREL64 relocations. */
4744
4745static bfd_vma
4746tpoff_base (struct bfd_link_info *info)
4747{
4748 struct elf_link_hash_table *htab = elf_hash_table (info);
4749
4750 /* If tls_sec is NULL, we should have signalled an error already. */
ac21917f 4751 BFD_ASSERT (htab->tls_sec != NULL);
a06ea964
NC		 4752
4753 bfd_vma base = align_power ((bfd_vma) TCB_SIZE,
4754 htab->tls_sec->alignment_power);
4755 return htab->tls_sec->vma - base;
4756}
4757
4758static bfd_vma *
4759symbol_got_offset_ref (bfd *input_bfd, struct elf_link_hash_entry *h,
4760 unsigned long r_symndx)
4761{
4762 /* Calculate the address of the GOT entry for symbol
4763 referred to in h. */
4764 if (h != NULL)
4765 return &h->got.offset;
4766 else
4767 {
4768 /* local symbol */
4769 struct elf_aarch64_local_symbol *l;
4770
cec5225b 4771 l = elf_aarch64_locals (input_bfd);
a06ea964
NC		 4772 return &l[r_symndx].got_offset;
4773 }
4774}
4775
4776static void
4777symbol_got_offset_mark (bfd *input_bfd, struct elf_link_hash_entry *h,
4778 unsigned long r_symndx)
4779{
4780 bfd_vma *p;
4781 p = symbol_got_offset_ref (input_bfd, h, r_symndx);
4782 *p |= 1;
4783}
4784
4785static int
4786symbol_got_offset_mark_p (bfd *input_bfd, struct elf_link_hash_entry *h,
4787 unsigned long r_symndx)
4788{
4789 bfd_vma value;
4790 value = * symbol_got_offset_ref (input_bfd, h, r_symndx);
4791 return value & 1;
4792}
4793
4794static bfd_vma
4795symbol_got_offset (bfd *input_bfd, struct elf_link_hash_entry *h,
4796 unsigned long r_symndx)
4797{
4798 bfd_vma value;
4799 value = * symbol_got_offset_ref (input_bfd, h, r_symndx);
4800 value &= ~1;
4801 return value;
4802}
4803
4804static bfd_vma *
4805symbol_tlsdesc_got_offset_ref (bfd *input_bfd, struct elf_link_hash_entry *h,
4806 unsigned long r_symndx)
4807{
4808 /* Calculate the address of the GOT entry for symbol
4809 referred to in h. */
4810 if (h != NULL)
4811 {
cec5225b
YZ		 4812 struct elf_aarch64_link_hash_entry *eh;
4813 eh = (struct elf_aarch64_link_hash_entry *) h;
a06ea964
NC		 4814 return &eh->tlsdesc_got_jump_table_offset;
4815 }
4816 else
4817 {
4818 /* local symbol */
4819 struct elf_aarch64_local_symbol *l;
4820
cec5225b 4821 l = elf_aarch64_locals (input_bfd);
a06ea964
NC		 4822 return &l[r_symndx].tlsdesc_got_jump_table_offset;
4823 }
4824}
4825
4826static void
4827symbol_tlsdesc_got_offset_mark (bfd *input_bfd, struct elf_link_hash_entry *h,
4828 unsigned long r_symndx)
4829{
4830 bfd_vma *p;
4831 p = symbol_tlsdesc_got_offset_ref (input_bfd, h, r_symndx);
4832 *p |= 1;
4833}
4834
4835static int
4836symbol_tlsdesc_got_offset_mark_p (bfd *input_bfd,
4837 struct elf_link_hash_entry *h,
4838 unsigned long r_symndx)
4839{
4840 bfd_vma value;
4841 value = * symbol_tlsdesc_got_offset_ref (input_bfd, h, r_symndx);
4842 return value & 1;
4843}
4844
4845static bfd_vma
4846symbol_tlsdesc_got_offset (bfd *input_bfd, struct elf_link_hash_entry *h,
4847 unsigned long r_symndx)
4848{
4849 bfd_vma value;
4850 value = * symbol_tlsdesc_got_offset_ref (input_bfd, h, r_symndx);
4851 value &= ~1;
4852 return value;
4853}
4854
68fcca92
JW		 4855/* Data for make_branch_to_erratum_835769_stub(). */
4856
4857struct erratum_835769_branch_to_stub_data
4858{
4106101c 4859 struct bfd_link_info *info;
68fcca92
JW		 4860 asection *output_section;
4861 bfd_byte *contents;
4862};
4863
4864/* Helper to insert branches to erratum 835769 stubs in the right
4865 places for a particular section. */
4866
4867static bfd_boolean
4868make_branch_to_erratum_835769_stub (struct bfd_hash_entry *gen_entry,
4869 void *in_arg)
4870{
4871 struct elf_aarch64_stub_hash_entry *stub_entry;
4872 struct erratum_835769_branch_to_stub_data *data;
4873 bfd_byte *contents;
4874 unsigned long branch_insn = 0;
4875 bfd_vma veneered_insn_loc, veneer_entry_loc;
4876 bfd_signed_vma branch_offset;
4877 unsigned int target;
4878 bfd *abfd;
4879
4880 stub_entry = (struct elf_aarch64_stub_hash_entry *) gen_entry;
4881 data = (struct erratum_835769_branch_to_stub_data *) in_arg;
4882
4883 if (stub_entry->target_section != data->output_section
4884 || stub_entry->stub_type != aarch64_stub_erratum_835769_veneer)
4885 return TRUE;
4886
4887 contents = data->contents;
4888 veneered_insn_loc = stub_entry->target_section->output_section->vma
4889 + stub_entry->target_section->output_offset
4890 + stub_entry->target_value;
4891 veneer_entry_loc = stub_entry->stub_sec->output_section->vma
4892 + stub_entry->stub_sec->output_offset
4893 + stub_entry->stub_offset;
4894 branch_offset = veneer_entry_loc - veneered_insn_loc;
4895
4896 abfd = stub_entry->target_section->owner;
4897 if (!aarch64_valid_branch_p (veneer_entry_loc, veneered_insn_loc))
4eca0228 4898 _bfd_error_handler
90b6238f 4899 (_("%pB: error: erratum 835769 stub out "
4eca0228 4900 "of range (input file too large)"), abfd);
68fcca92
JW		 4901
4902 target = stub_entry->target_value;
4903 branch_insn = 0x14000000;
4904 branch_offset >>= 2;
4905 branch_offset &= 0x3ffffff;
4906 branch_insn |= branch_offset;
4907 bfd_putl32 (branch_insn, &contents[target]);
4908
4909 return TRUE;
4910}
4911
4106101c
MS		 4912
4913static bfd_boolean
4914_bfd_aarch64_erratum_843419_branch_to_stub (struct bfd_hash_entry *gen_entry,
4915 void *in_arg)
4916{
4917 struct elf_aarch64_stub_hash_entry *stub_entry
4918 = (struct elf_aarch64_stub_hash_entry *) gen_entry;
4919 struct erratum_835769_branch_to_stub_data *data
4920 = (struct erratum_835769_branch_to_stub_data *) in_arg;
4921 struct bfd_link_info *info;
4922 struct elf_aarch64_link_hash_table *htab;
4923 bfd_byte *contents;
4924 asection *section;
4925 bfd *abfd;
4926 bfd_vma place;
4927 uint32_t insn;
4928
4929 info = data->info;
4930 contents = data->contents;
4931 section = data->output_section;
4932
4933 htab = elf_aarch64_hash_table (info);
4934
4935 if (stub_entry->target_section != section
4936 || stub_entry->stub_type != aarch64_stub_erratum_843419_veneer)
4937 return TRUE;
4938
4939 insn = bfd_getl32 (contents + stub_entry->target_value);
4940 bfd_putl32 (insn,
4941 stub_entry->stub_sec->contents + stub_entry->stub_offset);
4942
4943 place = (section->output_section->vma + section->output_offset
4944 + stub_entry->adrp_offset);
4945 insn = bfd_getl32 (contents + stub_entry->adrp_offset);
4946
4947 if ((insn & AARCH64_ADRP_OP_MASK) != AARCH64_ADRP_OP)
4948 abort ();
4949
4950 bfd_signed_vma imm =
4951 (_bfd_aarch64_sign_extend
4952 ((bfd_vma) _bfd_aarch64_decode_adrp_imm (insn) << 12, 33)
4953 - (place & 0xfff));
4954
4955 if (htab->fix_erratum_843419_adr
4956 && (imm >= AARCH64_MIN_ADRP_IMM && imm <= AARCH64_MAX_ADRP_IMM))
4957 {
4958 insn = (_bfd_aarch64_reencode_adr_imm (AARCH64_ADR_OP, imm)
4959 | AARCH64_RT (insn));
4960 bfd_putl32 (insn, contents + stub_entry->adrp_offset);
4961 }
4962 else
4963 {
4964 bfd_vma veneered_insn_loc;
4965 bfd_vma veneer_entry_loc;
4966 bfd_signed_vma branch_offset;
4967 uint32_t branch_insn;
4968
4969 veneered_insn_loc = stub_entry->target_section->output_section->vma
4970 + stub_entry->target_section->output_offset
4971 + stub_entry->target_value;
4972 veneer_entry_loc = stub_entry->stub_sec->output_section->vma
4973 + stub_entry->stub_sec->output_offset
4974 + stub_entry->stub_offset;
4975 branch_offset = veneer_entry_loc - veneered_insn_loc;
4976
4977 abfd = stub_entry->target_section->owner;
4978 if (!aarch64_valid_branch_p (veneer_entry_loc, veneered_insn_loc))
4eca0228 4979 _bfd_error_handler
90b6238f 4980 (_("%pB: error: erratum 843419 stub out "
4106101c
MS		 4981 "of range (input file too large)"), abfd);
4982
4983 branch_insn = 0x14000000;
4984 branch_offset >>= 2;
4985 branch_offset &= 0x3ffffff;
4986 branch_insn |= branch_offset;
4987 bfd_putl32 (branch_insn, contents + stub_entry->target_value);
4988 }
4989 return TRUE;
4990}
4991
4992
68fcca92
JW		 4993static bfd_boolean
4994elfNN_aarch64_write_section (bfd *output_bfd ATTRIBUTE_UNUSED,
4995 struct bfd_link_info *link_info,
4996 asection *sec,
4997 bfd_byte *contents)
4998
4999{
5000 struct elf_aarch64_link_hash_table *globals =
f872121a 5001 elf_aarch64_hash_table (link_info);
68fcca92
JW		 5002
5003 if (globals == NULL)
5004 return FALSE;
5005
5006 /* Fix code to point to erratum 835769 stubs. */
5007 if (globals->fix_erratum_835769)
5008 {
5009 struct erratum_835769_branch_to_stub_data data;
5010
4106101c 5011 data.info = link_info;
68fcca92
JW		 5012 data.output_section = sec;
5013 data.contents = contents;
5014 bfd_hash_traverse (&globals->stub_hash_table,
5015 make_branch_to_erratum_835769_stub, &data);
5016 }
5017
4106101c
MS		 5018 if (globals->fix_erratum_843419)
5019 {
5020 struct erratum_835769_branch_to_stub_data data;
5021
5022 data.info = link_info;
5023 data.output_section = sec;
5024 data.contents = contents;
5025 bfd_hash_traverse (&globals->stub_hash_table,
5026 _bfd_aarch64_erratum_843419_branch_to_stub, &data);
5027 }
5028
68fcca92
JW		 5029 return FALSE;
5030}
5031
2aff25ba
JW		 5032/* Return TRUE if RELOC is a relocation against the base of GOT table. */
5033
5034static bfd_boolean
5035aarch64_relocation_aginst_gp_p (bfd_reloc_code_real_type reloc)
5036{
5037 return (reloc == BFD_RELOC_AARCH64_LD32_GOTPAGE_LO14
5038 || reloc == BFD_RELOC_AARCH64_LD64_GOTPAGE_LO15
5039 || reloc == BFD_RELOC_AARCH64_LD64_GOTOFF_LO15
5040 || reloc == BFD_RELOC_AARCH64_MOVW_GOTOFF_G0_NC
5041 || reloc == BFD_RELOC_AARCH64_MOVW_GOTOFF_G1);
5042}
5043
4e7fbb34
JW		 5044/* Perform a relocation as part of a final link. The input relocation type
5045 should be TLS relaxed. */
5046
a06ea964 5047static bfd_reloc_status_type
cec5225b 5048elfNN_aarch64_final_link_relocate (reloc_howto_type *howto,
a06ea964
NC		 5049 bfd *input_bfd,
5050 bfd *output_bfd,
5051 asection *input_section,
5052 bfd_byte *contents,
5053 Elf_Internal_Rela *rel,
5054 bfd_vma value,
5055 struct bfd_link_info *info,
5056 asection *sym_sec,
5057 struct elf_link_hash_entry *h,
5058 bfd_boolean *unresolved_reloc_p,
5059 bfd_boolean save_addend,
1419bbe5
WN		 5060 bfd_vma *saved_addend,
5061 Elf_Internal_Sym *sym)
a06ea964 5062{
1419bbe5 5063 Elf_Internal_Shdr *symtab_hdr;
a06ea964 5064 unsigned int r_type = howto->type;
a6bb11b2
YZ		 5065 bfd_reloc_code_real_type bfd_r_type
5066 = elfNN_aarch64_bfd_reloc_from_howto (howto);
a06ea964
NC		 5067 unsigned long r_symndx;
5068 bfd_byte *hit_data = contents + rel->r_offset;
96d01d93 5069 bfd_vma place, off, got_entry_addr = 0;
a06ea964 5070 bfd_signed_vma signed_addend;
cec5225b 5071 struct elf_aarch64_link_hash_table *globals;
a06ea964 5072 bfd_boolean weak_undef_p;
ff07562f 5073 bfd_boolean relative_reloc;
b53b1bed 5074 asection *base_got;
ff07562f 5075 bfd_vma orig_value = value;
ddb7fd0f 5076 bfd_boolean resolved_to_zero;
0c1ded8d 5077 bfd_boolean abs_symbol_p;
a06ea964 5078
cec5225b 5079 globals = elf_aarch64_hash_table (info);
a06ea964 5080
1419bbe5
WN		 5081 symtab_hdr = &elf_symtab_hdr (input_bfd);
5082
a06ea964
NC		 5083 BFD_ASSERT (is_aarch64_elf (input_bfd));
5084
cec5225b 5085 r_symndx = ELFNN_R_SYM (rel->r_info);
a06ea964 5086
a06ea964
NC		 5087 place = input_section->output_section->vma
5088 + input_section->output_offset + rel->r_offset;
5089
5090 /* Get addend, accumulating the addend for consecutive relocs
5091 which refer to the same offset. */
5092 signed_addend = saved_addend ? *saved_addend : 0;
5093 signed_addend += rel->r_addend;
5094
5095 weak_undef_p = (h ? h->root.type == bfd_link_hash_undefweak
5096 : bfd_is_und_section (sym_sec));
0c1ded8d
RL		 5097 abs_symbol_p = (h !=NULL && h->root.type == bfd_link_hash_defined
5098 && bfd_is_abs_section (h->root.u.def.section));
5099
a6bb11b2 5100
1419bbe5
WN		 5101 /* Since STT_GNU_IFUNC symbol must go through PLT, we handle
5102 it here if it is defined in a non-shared object. */
5103 if (h != NULL
5104 && h->type == STT_GNU_IFUNC
5105 && h->def_regular)
5106 {
5107 asection *plt;
5108 const char *name;
99ad26cb 5109 bfd_vma addend = 0;
1419bbe5 5110
545bc2b3
SN		 5111 if ((input_section->flags & SEC_ALLOC) == 0)
5112 {
5113 /* Dynamic relocs are not propagated for SEC_DEBUGGING
5114 sections because such sections are not SEC_ALLOC and
5115 thus ld.so will not process them. */
5116 if ((input_section->flags & SEC_DEBUGGING) != 0)
5117 return bfd_reloc_ok;
5118
5119 if (h->root.root.string)
5120 name = h->root.root.string;
5121 else
5122 name = bfd_elf_sym_name (input_bfd, symtab_hdr, sym, NULL);
5123 _bfd_error_handler
5124 /* xgettext:c-format */
2dcf00ce
AM		 5125 (_("%pB(%pA+%#" PRIx64 "): "
5126 "unresolvable %s relocation against symbol `%s'"),
5127 input_bfd, input_section, (uint64_t) rel->r_offset,
5128 howto->name, name);
545bc2b3 5129 bfd_set_error (bfd_error_bad_value);
1d75a8e2 5130 return bfd_reloc_notsupported;
545bc2b3
SN		 5131 }
5132 else if (h->plt.offset == (bfd_vma) -1)
5133 goto bad_ifunc_reloc;
1419bbe5
WN		 5134
5135 /* STT_GNU_IFUNC symbol must go through PLT. */
5136 plt = globals->root.splt ? globals->root.splt : globals->root.iplt;
5137 value = (plt->output_section->vma + plt->output_offset + h->plt.offset);
5138
5139 switch (bfd_r_type)
5140 {
5141 default:
545bc2b3 5142bad_ifunc_reloc:
1419bbe5
WN		 5143 if (h->root.root.string)
5144 name = h->root.root.string;
5145 else
5146 name = bfd_elf_sym_name (input_bfd, symtab_hdr, sym,
5147 NULL);
4eca0228 5148 _bfd_error_handler
695344c0 5149 /* xgettext:c-format */
871b3ab2 5150 (_("%pB: relocation %s against STT_GNU_IFUNC "
1419bbe5
WN		 5151 "symbol `%s' isn't handled by %s"), input_bfd,
5152 howto->name, name, __FUNCTION__);
5153 bfd_set_error (bfd_error_bad_value);
1d75a8e2 5154 return bfd_reloc_notsupported;
1419bbe5
WN		 5155
5156 case BFD_RELOC_AARCH64_NN:
5157 if (rel->r_addend != 0)
5158 {
5159 if (h->root.root.string)
5160 name = h->root.root.string;
5161 else
5162 name = bfd_elf_sym_name (input_bfd, symtab_hdr,
5163 sym, NULL);
4eca0228 5164 _bfd_error_handler
695344c0 5165 /* xgettext:c-format */
871b3ab2 5166 (_("%pB: relocation %s against STT_GNU_IFUNC "
2dcf00ce
AM		 5167 "symbol `%s' has non-zero addend: %" PRId64),
5168 input_bfd, howto->name, name, (int64_t) rel->r_addend);
1419bbe5 5169 bfd_set_error (bfd_error_bad_value);
1d75a8e2 5170 return bfd_reloc_notsupported;
1419bbe5
WN		 5171 }
5172
5173 /* Generate dynamic relocation only when there is a
5174 non-GOT reference in a shared object. */
0e1862bb 5175 if (bfd_link_pic (info) && h->non_got_ref)
1419bbe5
WN		 5176 {
5177 Elf_Internal_Rela outrel;
5178 asection *sreloc;
5179
5180 /* Need a dynamic relocation to get the real function
5181 address. */
5182 outrel.r_offset = _bfd_elf_section_offset (output_bfd,
5183 info,
5184 input_section,
5185 rel->r_offset);
5186 if (outrel.r_offset == (bfd_vma) -1
5187 || outrel.r_offset == (bfd_vma) -2)
5188 abort ();
5189
5190 outrel.r_offset += (input_section->output_section->vma
5191 + input_section->output_offset);
5192
5193 if (h->dynindx == -1
5194 || h->forced_local
0e1862bb 5195 || bfd_link_executable (info))
1419bbe5
WN		 5196 {
5197 /* This symbol is resolved locally. */
5198 outrel.r_info = ELFNN_R_INFO (0, AARCH64_R (IRELATIVE));
5199 outrel.r_addend = (h->root.u.def.value
5200 + h->root.u.def.section->output_section->vma
5201 + h->root.u.def.section->output_offset);
5202 }
5203 else
5204 {
5205 outrel.r_info = ELFNN_R_INFO (h->dynindx, r_type);
5206 outrel.r_addend = 0;
5207 }
5208
5209 sreloc = globals->root.irelifunc;
5210 elf_append_rela (output_bfd, sreloc, &outrel);
5211
5212 /* If this reloc is against an external symbol, we
5213 do not want to fiddle with the addend. Otherwise,
5214 we need to include the symbol value so that it
5215 becomes an addend for the dynamic reloc. For an
5216 internal symbol, we have updated addend. */
5217 return bfd_reloc_ok;
5218 }
5219 /* FALLTHROUGH */
1419bbe5 5220 case BFD_RELOC_AARCH64_CALL26:
ce336788 5221 case BFD_RELOC_AARCH64_JUMP26:
1419bbe5
WN		 5222 value = _bfd_aarch64_elf_resolve_relocation (bfd_r_type, place, value,
5223 signed_addend,
5224 weak_undef_p);
5225 return _bfd_aarch64_elf_put_addend (input_bfd, hit_data, bfd_r_type,
5226 howto, value);
1419bbe5
WN		 5227 case BFD_RELOC_AARCH64_ADR_GOT_PAGE:
5228 case BFD_RELOC_AARCH64_GOT_LD_PREL19:
7018c030 5229 case BFD_RELOC_AARCH64_LD32_GOTPAGE_LO14:
ce336788 5230 case BFD_RELOC_AARCH64_LD32_GOT_LO12_NC:
99ad26cb 5231 case BFD_RELOC_AARCH64_LD64_GOTPAGE_LO15:
dc8008f5 5232 case BFD_RELOC_AARCH64_MOVW_GOTOFF_G0_NC:
74a1bfe1 5233 case BFD_RELOC_AARCH64_MOVW_GOTOFF_G1:
a2e1db00 5234 case BFD_RELOC_AARCH64_LD64_GOTOFF_LO15:
ce336788 5235 case BFD_RELOC_AARCH64_LD64_GOT_LO12_NC:
1419bbe5
WN		 5236 base_got = globals->root.sgot;
5237 off = h->got.offset;
5238
5239 if (base_got == NULL)
5240 abort ();
5241
5242 if (off == (bfd_vma) -1)
5243 {
5244 bfd_vma plt_index;
5245
5246 /* We can't use h->got.offset here to save state, or
5247 even just remember the offset, as finish_dynamic_symbol
5248 would use that as offset into .got. */
5249
5250 if (globals->root.splt != NULL)
5251 {
b1ee0cc4
WN		 5252 plt_index = ((h->plt.offset - globals->plt_header_size) /
5253 globals->plt_entry_size);
1419bbe5
WN		 5254 off = (plt_index + 3) * GOT_ENTRY_SIZE;
5255 base_got = globals->root.sgotplt;
5256 }
5257 else
5258 {
5259 plt_index = h->plt.offset / globals->plt_entry_size;
5260 off = plt_index * GOT_ENTRY_SIZE;
5261 base_got = globals->root.igotplt;
5262 }
5263
5264 if (h->dynindx == -1
5265 || h->forced_local
5266 || info->symbolic)
5267 {
5268 /* This references the local definition. We must
5269 initialize this entry in the global offset table.
5270 Since the offset must always be a multiple of 8,
5271 we use the least significant bit to record
5272 whether we have initialized it already.
5273
5274 When doing a dynamic link, we create a .rela.got
5275 relocation entry to initialize the value. This
5276 is done in the finish_dynamic_symbol routine. */
5277 if ((off & 1) != 0)
5278 off &= ~1;
5279 else
5280 {
5281 bfd_put_NN (output_bfd, value,
5282 base_got->contents + off);
5283 /* Note that this is harmless as -1 | 1 still is -1. */
5284 h->got.offset |= 1;
5285 }
5286 }
5287 value = (base_got->output_section->vma
5288 + base_got->output_offset + off);
5289 }
5290 else
5291 value = aarch64_calculate_got_entry_vma (h, globals, info,
5292 value, output_bfd,
5293 unresolved_reloc_p);
a0becb89 5294
2aff25ba
JW		 5295 if (aarch64_relocation_aginst_gp_p (bfd_r_type))
5296 addend = (globals->root.sgot->output_section->vma
5297 + globals->root.sgot->output_offset);
a0becb89 5298
1419bbe5 5299 value = _bfd_aarch64_elf_resolve_relocation (bfd_r_type, place, value,
99ad26cb 5300 addend, weak_undef_p);
1419bbe5 5301 return _bfd_aarch64_elf_put_addend (input_bfd, hit_data, bfd_r_type, howto, value);
1419bbe5 5302 case BFD_RELOC_AARCH64_ADD_LO12:
ce336788 5303 case BFD_RELOC_AARCH64_ADR_HI21_PCREL:
1419bbe5
WN		 5304 break;
5305 }
5306 }
5307
ddb7fd0f
L		 5308 resolved_to_zero = (h != NULL
5309 && UNDEFWEAK_NO_DYNAMIC_RELOC (info, h));
5310
a6bb11b2 5311 switch (bfd_r_type)
a06ea964 5312 {
a6bb11b2 5313 case BFD_RELOC_AARCH64_NONE:
0484b454 5314 case BFD_RELOC_AARCH64_TLSDESC_ADD:
a6bb11b2 5315 case BFD_RELOC_AARCH64_TLSDESC_CALL:
0484b454 5316 case BFD_RELOC_AARCH64_TLSDESC_LDR:
a06ea964
NC		 5317 *unresolved_reloc_p = FALSE;
5318 return bfd_reloc_ok;
5319
a6bb11b2 5320 case BFD_RELOC_AARCH64_NN:
a06ea964
NC		 5321
5322 /* When generating a shared object or relocatable executable, these
07d6d2b8
AM		 5323 relocations are copied into the output file to be resolved at
5324 run time. */
6353d82b
JW		 5325 if (((bfd_link_pic (info)
5326 || globals->root.is_relocatable_executable)
5327 && (input_section->flags & SEC_ALLOC)
5328 && (h == NULL
ddb7fd0f
L		 5329 || (ELF_ST_VISIBILITY (h->other) == STV_DEFAULT
5330 && !resolved_to_zero)
6353d82b
JW		 5331 || h->root.type != bfd_link_hash_undefweak))
5332 /* Or we are creating an executable, we may need to keep relocations
5333 for symbols satisfied by a dynamic library if we manage to avoid
5334 copy relocs for the symbol. */
5335 || (ELIMINATE_COPY_RELOCS
5336 && !bfd_link_pic (info)
5337 && h != NULL
5338 && (input_section->flags & SEC_ALLOC)
5339 && h->dynindx != -1
5340 && !h->non_got_ref
5341 && ((h->def_dynamic
5342 && !h->def_regular)
5343 || h->root.type == bfd_link_hash_undefweak
5344 || h->root.type == bfd_link_hash_undefined)))
a06ea964
NC		 5345 {
5346 Elf_Internal_Rela outrel;
5347 bfd_byte *loc;
5348 bfd_boolean skip, relocate;
5349 asection *sreloc;
5350
5351 *unresolved_reloc_p = FALSE;
5352
a06ea964
NC		 5353 skip = FALSE;
5354 relocate = FALSE;
5355
5356 outrel.r_addend = signed_addend;
5357 outrel.r_offset =
5358 _bfd_elf_section_offset (output_bfd, info, input_section,
5359 rel->r_offset);
5360 if (outrel.r_offset == (bfd_vma) - 1)
5361 skip = TRUE;
5362 else if (outrel.r_offset == (bfd_vma) - 2)
5363 {
5364 skip = TRUE;
5365 relocate = TRUE;
5366 }
0c1ded8d
RL		 5367 else if (abs_symbol_p)
5368 {
5369 /* Local absolute symbol. */
5370 skip = (h->forced_local || (h->dynindx == -1));
5371 relocate = skip;
5372 }
a06ea964
NC		 5373
5374 outrel.r_offset += (input_section->output_section->vma
5375 + input_section->output_offset);
5376
5377 if (skip)
5378 memset (&outrel, 0, sizeof outrel);
5379 else if (h != NULL
5380 && h->dynindx != -1
0e1862bb 5381 && (!bfd_link_pic (info)
0c1ded8d 5382 || !(bfd_link_pie (info) || SYMBOLIC_BIND (info, h))
0e1862bb 5383 || !h->def_regular))
cec5225b 5384 outrel.r_info = ELFNN_R_INFO (h->dynindx, r_type);
a06ea964
NC		 5385 else
5386 {
5387 int symbol;
5388
5389 /* On SVR4-ish systems, the dynamic loader cannot
5390 relocate the text and data segments independently,
5391 so the symbol does not matter. */
5392 symbol = 0;
1f56df9d 5393 relocate = globals->no_apply_dynamic_relocs ? FALSE : TRUE;
a6bb11b2 5394 outrel.r_info = ELFNN_R_INFO (symbol, AARCH64_R (RELATIVE));
a06ea964
NC		 5395 outrel.r_addend += value;
5396 }
5397
1419bbe5
WN		 5398 sreloc = elf_section_data (input_section)->sreloc;
5399 if (sreloc == NULL || sreloc->contents == NULL)
5400 return bfd_reloc_notsupported;
5401
5402 loc = sreloc->contents + sreloc->reloc_count++ * RELOC_SIZE (globals);
cec5225b 5403 bfd_elfNN_swap_reloca_out (output_bfd, &outrel, loc);
a06ea964 5404
1419bbe5 5405 if (sreloc->reloc_count * RELOC_SIZE (globals) > sreloc->size)
a06ea964
NC		 5406 {
5407 /* Sanity to check that we have previously allocated
5408 sufficient space in the relocation section for the
5409 number of relocations we actually want to emit. */
5410 abort ();
5411 }
5412
5413 /* If this reloc is against an external symbol, we do not want to
5414 fiddle with the addend. Otherwise, we need to include the symbol
5415 value so that it becomes an addend for the dynamic reloc. */
5416 if (!relocate)
5417 return bfd_reloc_ok;
5418
5419 return _bfd_final_link_relocate (howto, input_bfd, input_section,
5420 contents, rel->r_offset, value,
5421 signed_addend);
5422 }
5423 else
5424 value += signed_addend;
5425 break;
5426
a6bb11b2 5427 case BFD_RELOC_AARCH64_CALL26:
ce336788 5428 case BFD_RELOC_AARCH64_JUMP26:
a06ea964
NC		 5429 {
5430 asection *splt = globals->root.splt;
5431 bfd_boolean via_plt_p =
5432 splt != NULL && h != NULL && h->plt.offset != (bfd_vma) - 1;
5433
5434 /* A call to an undefined weak symbol is converted to a jump to
5435 the next instruction unless a PLT entry will be created.
5436 The jump to the next instruction is optimized as a NOP.
5437 Do the same for local undefined symbols. */
5438 if (weak_undef_p && ! via_plt_p)
5439 {
5440 bfd_putl32 (INSN_NOP, hit_data);
5441 return bfd_reloc_ok;
5442 }
5443
5444 /* If the call goes through a PLT entry, make sure to
5445 check distance to the right destination address. */
5446 if (via_plt_p)
07f9ddfe
JW		 5447 value = (splt->output_section->vma
5448 + splt->output_offset + h->plt.offset);
5449
5450 /* Check if a stub has to be inserted because the destination
5451 is too far away. */
5452 struct elf_aarch64_stub_hash_entry *stub_entry = NULL;
2f340668
JW		 5453
5454 /* If the branch destination is directed to plt stub, "value" will be
5455 the final destination, otherwise we should plus signed_addend, it may
5456 contain non-zero value, for example call to local function symbol
5457 which are turned into "sec_sym + sec_off", and sec_off is kept in
5458 signed_addend. */
5459 if (! aarch64_valid_branch_p (via_plt_p ? value : value + signed_addend,
5460 place))
07f9ddfe
JW		 5461 /* The target is out of reach, so redirect the branch to
5462 the local stub for this function. */
5463 stub_entry = elfNN_aarch64_get_stub_entry (input_section, sym_sec, h,
5464 rel, globals);
5465 if (stub_entry != NULL)
2f340668
JW		 5466 {
5467 value = (stub_entry->stub_offset
5468 + stub_entry->stub_sec->output_offset
5469 + stub_entry->stub_sec->output_section->vma);
5470
5471 /* We have redirected the destination to stub entry address,
5472 so ignore any addend record in the original rela entry. */
5473 signed_addend = 0;
5474 }
a06ea964 5475 }
caed7120
YZ		 5476 value = _bfd_aarch64_elf_resolve_relocation (bfd_r_type, place, value,
5477 signed_addend, weak_undef_p);
07f9ddfe 5478 *unresolved_reloc_p = FALSE;
a06ea964
NC		 5479 break;
5480
dcbd20eb
JW		 5481 case BFD_RELOC_AARCH64_16_PCREL:
5482 case BFD_RELOC_AARCH64_32_PCREL:
5483 case BFD_RELOC_AARCH64_64_PCREL:
ce336788
JW		 5484 case BFD_RELOC_AARCH64_ADR_HI21_NC_PCREL:
5485 case BFD_RELOC_AARCH64_ADR_HI21_PCREL:
5486 case BFD_RELOC_AARCH64_ADR_LO21_PCREL:
5487 case BFD_RELOC_AARCH64_LD_LO19_PCREL:
1daf502a
RL		 5488 case BFD_RELOC_AARCH64_MOVW_PREL_G0:
5489 case BFD_RELOC_AARCH64_MOVW_PREL_G0_NC:
5490 case BFD_RELOC_AARCH64_MOVW_PREL_G1:
5491 case BFD_RELOC_AARCH64_MOVW_PREL_G1_NC:
5492 case BFD_RELOC_AARCH64_MOVW_PREL_G2:
5493 case BFD_RELOC_AARCH64_MOVW_PREL_G2_NC:
5494 case BFD_RELOC_AARCH64_MOVW_PREL_G3:
0e1862bb 5495 if (bfd_link_pic (info)
dcbd20eb
JW		 5496 && (input_section->flags & SEC_ALLOC) != 0
5497 && (input_section->flags & SEC_READONLY) != 0
d68f1976 5498 && !SYMBOL_REFERENCES_LOCAL (info, h))
dcbd20eb
JW		 5499 {
5500 int howto_index = bfd_r_type - BFD_RELOC_AARCH64_RELOC_START;
5501
4eca0228 5502 _bfd_error_handler
695344c0 5503 /* xgettext:c-format */
871b3ab2 5504 (_("%pB: relocation %s against symbol `%s' which may bind "
d68f1976
JW		 5505 "externally can not be used when making a shared object; "
5506 "recompile with -fPIC"),
dcbd20eb
JW		 5507 input_bfd, elfNN_aarch64_howto_table[howto_index].name,
5508 h->root.root.string);
5509 bfd_set_error (bfd_error_bad_value);
1d75a8e2 5510 return bfd_reloc_notsupported;
dcbd20eb 5511 }
1a0670f3 5512 /* Fall through. */
dcbd20eb 5513
a6bb11b2 5514 case BFD_RELOC_AARCH64_16:
92d77487
RL		 5515#if ARCH_SIZE == 64
5516 case BFD_RELOC_AARCH64_32:
5517#endif
a6bb11b2 5518 case BFD_RELOC_AARCH64_ADD_LO12:
a6bb11b2 5519 case BFD_RELOC_AARCH64_BRANCH19:
ce336788 5520 case BFD_RELOC_AARCH64_LDST128_LO12:
a6bb11b2
YZ		 5521 case BFD_RELOC_AARCH64_LDST16_LO12:
5522 case BFD_RELOC_AARCH64_LDST32_LO12:
5523 case BFD_RELOC_AARCH64_LDST64_LO12:
ce336788 5524 case BFD_RELOC_AARCH64_LDST8_LO12:
a6bb11b2
YZ		 5525 case BFD_RELOC_AARCH64_MOVW_G0:
5526 case BFD_RELOC_AARCH64_MOVW_G0_NC:
ce336788 5527 case BFD_RELOC_AARCH64_MOVW_G0_S:
a6bb11b2
YZ		 5528 case BFD_RELOC_AARCH64_MOVW_G1:
5529 case BFD_RELOC_AARCH64_MOVW_G1_NC:
ce336788 5530 case BFD_RELOC_AARCH64_MOVW_G1_S:
a6bb11b2
YZ		 5531 case BFD_RELOC_AARCH64_MOVW_G2:
5532 case BFD_RELOC_AARCH64_MOVW_G2_NC:
ce336788 5533 case BFD_RELOC_AARCH64_MOVW_G2_S:
a6bb11b2 5534 case BFD_RELOC_AARCH64_MOVW_G3:
a6bb11b2 5535 case BFD_RELOC_AARCH64_TSTBR14:
caed7120
YZ		 5536 value = _bfd_aarch64_elf_resolve_relocation (bfd_r_type, place, value,
5537 signed_addend, weak_undef_p);
a06ea964
NC		 5538 break;
5539
a6bb11b2
YZ		 5540 case BFD_RELOC_AARCH64_ADR_GOT_PAGE:
5541 case BFD_RELOC_AARCH64_GOT_LD_PREL19:
7018c030 5542 case BFD_RELOC_AARCH64_LD32_GOTPAGE_LO14:
ce336788 5543 case BFD_RELOC_AARCH64_LD32_GOT_LO12_NC:
99ad26cb 5544 case BFD_RELOC_AARCH64_LD64_GOTPAGE_LO15:
ce336788 5545 case BFD_RELOC_AARCH64_LD64_GOT_LO12_NC:
2aff25ba
JW		 5546 case BFD_RELOC_AARCH64_LD64_GOTOFF_LO15:
5547 case BFD_RELOC_AARCH64_MOVW_GOTOFF_G0_NC:
5548 case BFD_RELOC_AARCH64_MOVW_GOTOFF_G1:
a06ea964
NC		 5549 if (globals->root.sgot == NULL)
5550 BFD_ASSERT (h != NULL);
5551
ff07562f 5552 relative_reloc = FALSE;
a06ea964
NC		 5553 if (h != NULL)
5554 {
99ad26cb 5555 bfd_vma addend = 0;
ff07562f
JW		 5556
5557 /* If a symbol is not dynamic and is not undefined weak, bind it
5558 locally and generate a RELATIVE relocation under PIC mode.
5559
5560 NOTE: one symbol may be referenced by several relocations, we
5561 should only generate one RELATIVE relocation for that symbol.
5562 Therefore, check GOT offset mark first. */
5563 if (h->dynindx == -1
5564 && !h->forced_local
5565 && h->root.type != bfd_link_hash_undefweak
5566 && bfd_link_pic (info)
5567 && !symbol_got_offset_mark_p (input_bfd, h, r_symndx))
5568 relative_reloc = TRUE;
5569
a06ea964
NC		 5570 value = aarch64_calculate_got_entry_vma (h, globals, info, value,
5571 output_bfd,
5572 unresolved_reloc_p);
ff07562f
JW		 5573 /* Record the GOT entry address which will be used when generating
5574 RELATIVE relocation. */
5575 if (relative_reloc)
5576 got_entry_addr = value;
5577
2aff25ba 5578 if (aarch64_relocation_aginst_gp_p (bfd_r_type))
99ad26cb
JW		 5579 addend = (globals->root.sgot->output_section->vma
5580 + globals->root.sgot->output_offset);
caed7120 5581 value = _bfd_aarch64_elf_resolve_relocation (bfd_r_type, place, value,
99ad26cb 5582 addend, weak_undef_p);
a06ea964 5583 }
b53b1bed
JW		 5584 else
5585 {
99ad26cb 5586 bfd_vma addend = 0;
b53b1bed
JW		 5587 struct elf_aarch64_local_symbol *locals
5588 = elf_aarch64_locals (input_bfd);
5589
5590 if (locals == NULL)
5591 {
5592 int howto_index = bfd_r_type - BFD_RELOC_AARCH64_RELOC_START;
4eca0228 5593 _bfd_error_handler
695344c0 5594 /* xgettext:c-format */
90b6238f 5595 (_("%pB: local symbol descriptor table be NULL when applying "
b53b1bed
JW		 5596 "relocation %s against local symbol"),
5597 input_bfd, elfNN_aarch64_howto_table[howto_index].name);
5598 abort ();
5599 }
5600
5601 off = symbol_got_offset (input_bfd, h, r_symndx);
5602 base_got = globals->root.sgot;
ff07562f
JW		 5603 got_entry_addr = (base_got->output_section->vma
5604 + base_got->output_offset + off);
b53b1bed
JW		 5605
5606 if (!symbol_got_offset_mark_p (input_bfd, h, r_symndx))
5607 {
5608 bfd_put_64 (output_bfd, value, base_got->contents + off);
5609
ff07562f
JW		 5610 /* For local symbol, we have done absolute relocation in static
5611 linking stage. While for shared library, we need to update the
5612 content of GOT entry according to the shared object's runtime
5613 base address. So, we need to generate a R_AARCH64_RELATIVE reloc
5614 for dynamic linker. */
0e1862bb 5615 if (bfd_link_pic (info))
ff07562f 5616 relative_reloc = TRUE;
b53b1bed
JW		 5617
5618 symbol_got_offset_mark (input_bfd, h, r_symndx);
5619 }
5620
5621 /* Update the relocation value to GOT entry addr as we have transformed
5622 the direct data access into indirect data access through GOT. */
5623 value = got_entry_addr;
99ad26cb 5624
2aff25ba 5625 if (aarch64_relocation_aginst_gp_p (bfd_r_type))
99ad26cb
JW		 5626 addend = base_got->output_section->vma + base_got->output_offset;
5627
5628 value = _bfd_aarch64_elf_resolve_relocation (bfd_r_type, place, value,
5629 addend, weak_undef_p);
b53b1bed 5630 }
ff07562f
JW		 5631
5632 if (relative_reloc)
5633 {
5634 asection *s;
5635 Elf_Internal_Rela outrel;
5636
5637 s = globals->root.srelgot;
5638 if (s == NULL)
5639 abort ();
5640
5641 outrel.r_offset = got_entry_addr;
5642 outrel.r_info = ELFNN_R_INFO (0, AARCH64_R (RELATIVE));
5643 outrel.r_addend = orig_value;
5644 elf_append_rela (output_bfd, s, &outrel);
5645 }
a2e1db00
RL		 5646 break;
5647
ce336788 5648 case BFD_RELOC_AARCH64_TLSGD_ADD_LO12_NC:
a6bb11b2 5649 case BFD_RELOC_AARCH64_TLSGD_ADR_PAGE21:
3c12b054 5650 case BFD_RELOC_AARCH64_TLSGD_ADR_PREL21:
a6bb11b2 5651 case BFD_RELOC_AARCH64_TLSIE_ADR_GOTTPREL_PAGE21:
a6bb11b2 5652 case BFD_RELOC_AARCH64_TLSIE_LD32_GOTTPREL_LO12_NC:
ce336788 5653 case BFD_RELOC_AARCH64_TLSIE_LD64_GOTTPREL_LO12_NC:
043bf05a 5654 case BFD_RELOC_AARCH64_TLSIE_LD_GOTTPREL_PREL19:
73f925cc 5655 case BFD_RELOC_AARCH64_TLSLD_ADD_LO12_NC:
f69e4920 5656 case BFD_RELOC_AARCH64_TLSLD_ADR_PAGE21:
77a69ff8 5657 case BFD_RELOC_AARCH64_TLSLD_ADR_PREL21:
a06ea964
NC		 5658 if (globals->root.sgot == NULL)
5659 return bfd_reloc_notsupported;
5660
5661 value = (symbol_got_offset (input_bfd, h, r_symndx)
5662 + globals->root.sgot->output_section->vma
f44a1f8e 5663 + globals->root.sgot->output_offset);
a06ea964 5664
caed7120
YZ		 5665 value = _bfd_aarch64_elf_resolve_relocation (bfd_r_type, place, value,
5666 0, weak_undef_p);
a06ea964
NC		 5667 *unresolved_reloc_p = FALSE;
5668 break;
5669
7ba7cfe4 5670 case BFD_RELOC_AARCH64_TLSGD_MOVW_G0_NC:
94facae3 5671 case BFD_RELOC_AARCH64_TLSGD_MOVW_G1:
3b957e5b
RL		 5672 case BFD_RELOC_AARCH64_TLSIE_MOVW_GOTTPREL_G0_NC:
5673 case BFD_RELOC_AARCH64_TLSIE_MOVW_GOTTPREL_G1:
94facae3
RL		 5674 if (globals->root.sgot == NULL)
5675 return bfd_reloc_notsupported;
5676
5677 value = symbol_got_offset (input_bfd, h, r_symndx);
5678 value = _bfd_aarch64_elf_resolve_relocation (bfd_r_type, place, value,
5679 0, weak_undef_p);
5680 *unresolved_reloc_p = FALSE;
5681 break;
5682
6ffe9a1b 5683 case BFD_RELOC_AARCH64_TLSLD_ADD_DTPREL_HI12:
40fbed84 5684 case BFD_RELOC_AARCH64_TLSLD_ADD_DTPREL_LO12:
753999c1 5685 case BFD_RELOC_AARCH64_TLSLD_ADD_DTPREL_LO12_NC:
07c9aa07
JW		 5686 case BFD_RELOC_AARCH64_TLSLD_LDST16_DTPREL_LO12:
5687 case BFD_RELOC_AARCH64_TLSLD_LDST16_DTPREL_LO12_NC:
5688 case BFD_RELOC_AARCH64_TLSLD_LDST32_DTPREL_LO12:
5689 case BFD_RELOC_AARCH64_TLSLD_LDST32_DTPREL_LO12_NC:
5690 case BFD_RELOC_AARCH64_TLSLD_LDST64_DTPREL_LO12:
5691 case BFD_RELOC_AARCH64_TLSLD_LDST64_DTPREL_LO12_NC:
5692 case BFD_RELOC_AARCH64_TLSLD_LDST8_DTPREL_LO12:
5693 case BFD_RELOC_AARCH64_TLSLD_LDST8_DTPREL_LO12_NC:
6ffe9a1b
JW		 5694 case BFD_RELOC_AARCH64_TLSLD_MOVW_DTPREL_G0:
5695 case BFD_RELOC_AARCH64_TLSLD_MOVW_DTPREL_G0_NC:
5696 case BFD_RELOC_AARCH64_TLSLD_MOVW_DTPREL_G1:
5697 case BFD_RELOC_AARCH64_TLSLD_MOVW_DTPREL_G1_NC:
5698 case BFD_RELOC_AARCH64_TLSLD_MOVW_DTPREL_G2:
40fbed84
JW		 5699 value = _bfd_aarch64_elf_resolve_relocation (bfd_r_type, place, value,
5700 signed_addend - dtpoff_base (info),
5701 weak_undef_p);
5702 break;
5703
a6bb11b2
YZ		 5704 case BFD_RELOC_AARCH64_TLSLE_ADD_TPREL_HI12:
5705 case BFD_RELOC_AARCH64_TLSLE_ADD_TPREL_LO12:
5706 case BFD_RELOC_AARCH64_TLSLE_ADD_TPREL_LO12_NC:
5707 case BFD_RELOC_AARCH64_TLSLE_MOVW_TPREL_G0:
5708 case BFD_RELOC_AARCH64_TLSLE_MOVW_TPREL_G0_NC:
5709 case BFD_RELOC_AARCH64_TLSLE_MOVW_TPREL_G1:
5710 case BFD_RELOC_AARCH64_TLSLE_MOVW_TPREL_G1_NC:
5711 case BFD_RELOC_AARCH64_TLSLE_MOVW_TPREL_G2:
caed7120
YZ		 5712 value = _bfd_aarch64_elf_resolve_relocation (bfd_r_type, place, value,
5713 signed_addend - tpoff_base (info),
5714 weak_undef_p);
a06ea964
NC		 5715 *unresolved_reloc_p = FALSE;
5716 break;
5717
f955cccf 5718 case BFD_RELOC_AARCH64_TLSDESC_ADD_LO12:
a6bb11b2 5719 case BFD_RELOC_AARCH64_TLSDESC_ADR_PAGE21:
389b8029 5720 case BFD_RELOC_AARCH64_TLSDESC_ADR_PREL21:
a6bb11b2 5721 case BFD_RELOC_AARCH64_TLSDESC_LD32_LO12_NC:
f955cccf 5722 case BFD_RELOC_AARCH64_TLSDESC_LD64_LO12:
1ada945d 5723 case BFD_RELOC_AARCH64_TLSDESC_LD_PREL19:
a06ea964
NC		 5724 if (globals->root.sgot == NULL)
5725 return bfd_reloc_notsupported;
a06ea964
NC		 5726 value = (symbol_tlsdesc_got_offset (input_bfd, h, r_symndx)
5727 + globals->root.sgotplt->output_section->vma
f44a1f8e 5728 + globals->root.sgotplt->output_offset
a06ea964
NC		 5729 + globals->sgotplt_jump_table_size);
5730
caed7120
YZ		 5731 value = _bfd_aarch64_elf_resolve_relocation (bfd_r_type, place, value,
5732 0, weak_undef_p);
a06ea964
NC		 5733 *unresolved_reloc_p = FALSE;
5734 break;
5735
0484b454
RL		 5736 case BFD_RELOC_AARCH64_TLSDESC_OFF_G0_NC:
5737 case BFD_RELOC_AARCH64_TLSDESC_OFF_G1:
5738 if (globals->root.sgot == NULL)
5739 return bfd_reloc_notsupported;
5740
5741 value = (symbol_tlsdesc_got_offset (input_bfd, h, r_symndx)
5742 + globals->root.sgotplt->output_section->vma
5743 + globals->root.sgotplt->output_offset
5744 + globals->sgotplt_jump_table_size);
5745
5746 value -= (globals->root.sgot->output_section->vma
5747 + globals->root.sgot->output_offset);
5748
5749 value = _bfd_aarch64_elf_resolve_relocation (bfd_r_type, place, value,
5750 0, weak_undef_p);
5751 *unresolved_reloc_p = FALSE;
5752 break;
5753
a06ea964
NC		 5754 default:
5755 return bfd_reloc_notsupported;
5756 }
5757
5758 if (saved_addend)
5759 *saved_addend = value;
5760
5761 /* Only apply the final relocation in a sequence. */
5762 if (save_addend)
5763 return bfd_reloc_continue;
5764
caed7120
YZ		 5765 return _bfd_aarch64_elf_put_addend (input_bfd, hit_data, bfd_r_type,
5766 howto, value);
a06ea964
NC		 5767}
5768
2d0ca824
YN		 5769/* LP64 and ILP32 operates on x- and w-registers respectively.
5770 Next definitions take into account the difference between
5771 corresponding machine codes. R means x-register if the target
5772 arch is LP64, and w-register if the target is ILP32. */
5773
5774#if ARCH_SIZE == 64
5775# define add_R0_R0 (0x91000000)
5776# define add_R0_R0_R1 (0x8b000020)
5777# define add_R0_R1 (0x91400020)
5778# define ldr_R0 (0x58000000)
5779# define ldr_R0_mask(i) (i & 0xffffffe0)
5780# define ldr_R0_x0 (0xf9400000)
5781# define ldr_hw_R0 (0xf2a00000)
5782# define movk_R0 (0xf2800000)
5783# define movz_R0 (0xd2a00000)
5784# define movz_hw_R0 (0xd2c00000)
5785#else /*ARCH_SIZE == 32 */
5786# define add_R0_R0 (0x11000000)
5787# define add_R0_R0_R1 (0x0b000020)
5788# define add_R0_R1 (0x11400020)
5789# define ldr_R0 (0x18000000)
5790# define ldr_R0_mask(i) (i & 0xbfffffe0)
5791# define ldr_R0_x0 (0xb9400000)
5792# define ldr_hw_R0 (0x72a00000)
5793# define movk_R0 (0x72800000)
5794# define movz_R0 (0x52a00000)
5795# define movz_hw_R0 (0x52c00000)
5796#endif
5797
a06ea964
NC		 5798/* Handle TLS relaxations. Relaxing is possible for symbols that use
5799 R_AARCH64_TLSDESC_ADR_{PAGE, LD64_LO12_NC, ADD_LO12_NC} during a static
5800 link.
5801
5802 Return bfd_reloc_ok if we're done, bfd_reloc_continue if the caller
5803 is to then call final_link_relocate. Return other values in the
5804 case of error. */
5805
5806static bfd_reloc_status_type
cec5225b 5807elfNN_aarch64_tls_relax (struct elf_aarch64_link_hash_table *globals,
a06ea964 5808 bfd *input_bfd, bfd_byte *contents,
06d2788c 5809 Elf_Internal_Rela *rel, struct elf_link_hash_entry *h)
a06ea964
NC		 5810{
5811 bfd_boolean is_local = h == NULL;
cec5225b 5812 unsigned int r_type = ELFNN_R_TYPE (rel->r_info);
a06ea964
NC		 5813 unsigned long insn;
5814
5815 BFD_ASSERT (globals && input_bfd && contents && rel);
5816
0aa13fee 5817 switch (elfNN_aarch64_bfd_reloc_from_type (input_bfd, r_type))
a06ea964 5818 {
a6bb11b2 5819 case BFD_RELOC_AARCH64_TLSDESC_ADR_PAGE21:
ce336788 5820 case BFD_RELOC_AARCH64_TLSGD_ADR_PAGE21:
a06ea964
NC		 5821 if (is_local)
5822 {
5823 /* GD->LE relaxation:
2d0ca824 5824 adrp x0, :tlsgd:var => movz R0, :tprel_g1:var
a06ea964 5825 or
2d0ca824
YN		 5826 adrp x0, :tlsdesc:var => movz R0, :tprel_g1:var
5827
5828 Where R is x for LP64, and w for ILP32. */
5829 bfd_putl32 (movz_R0, contents + rel->r_offset);
a06ea964
NC		 5830 return bfd_reloc_continue;
5831 }
5832 else
5833 {
5834 /* GD->IE relaxation:
5835 adrp x0, :tlsgd:var => adrp x0, :gottprel:var
5836 or
5837 adrp x0, :tlsdesc:var => adrp x0, :gottprel:var
5838 */
a06ea964
NC		 5839 return bfd_reloc_continue;
5840 }
5841
389b8029
MS		 5842 case BFD_RELOC_AARCH64_TLSDESC_ADR_PREL21:
5843 BFD_ASSERT (0);
5844 break;
5845
1ada945d
MS		 5846 case BFD_RELOC_AARCH64_TLSDESC_LD_PREL19:
5847 if (is_local)
5848 {
5849 /* Tiny TLSDESC->LE relaxation:
07d6d2b8
AM		 5850 ldr x1, :tlsdesc:var => movz R0, #:tprel_g1:var
5851 adr x0, :tlsdesc:var => movk R0, #:tprel_g0_nc:var
1ada945d 5852 .tlsdesccall var
07d6d2b8 5853 blr x1 => nop
2d0ca824
YN		 5854
5855 Where R is x for LP64, and w for ILP32. */
1ada945d
MS		 5856 BFD_ASSERT (ELFNN_R_TYPE (rel[1].r_info) == AARCH64_R (TLSDESC_ADR_PREL21));
5857 BFD_ASSERT (ELFNN_R_TYPE (rel[2].r_info) == AARCH64_R (TLSDESC_CALL));
5858
5859 rel[1].r_info = ELFNN_R_INFO (ELFNN_R_SYM (rel->r_info),
5860 AARCH64_R (TLSLE_MOVW_TPREL_G0_NC));
5861 rel[2].r_info = ELFNN_R_INFO (STN_UNDEF, R_AARCH64_NONE);
5862
2d0ca824
YN		 5863 bfd_putl32 (movz_R0, contents + rel->r_offset);
5864 bfd_putl32 (movk_R0, contents + rel->r_offset + 4);
1ada945d
MS		 5865 bfd_putl32 (INSN_NOP, contents + rel->r_offset + 8);
5866 return bfd_reloc_continue;
5867 }
5868 else
5869 {
5870 /* Tiny TLSDESC->IE relaxation:
07d6d2b8
AM		 5871 ldr x1, :tlsdesc:var => ldr x0, :gottprel:var
5872 adr x0, :tlsdesc:var => nop
1ada945d 5873 .tlsdesccall var
07d6d2b8 5874 blr x1 => nop
1ada945d
MS		 5875 */
5876 BFD_ASSERT (ELFNN_R_TYPE (rel[1].r_info) == AARCH64_R (TLSDESC_ADR_PREL21));
5877 BFD_ASSERT (ELFNN_R_TYPE (rel[2].r_info) == AARCH64_R (TLSDESC_CALL));
5878
5879 rel[1].r_info = ELFNN_R_INFO (STN_UNDEF, R_AARCH64_NONE);
5880 rel[2].r_info = ELFNN_R_INFO (STN_UNDEF, R_AARCH64_NONE);
5881
2d0ca824 5882 bfd_putl32 (ldr_R0, contents + rel->r_offset);
1ada945d
MS		 5883 bfd_putl32 (INSN_NOP, contents + rel->r_offset + 4);
5884 bfd_putl32 (INSN_NOP, contents + rel->r_offset + 8);
5885 return bfd_reloc_continue;
5886 }
5887
3c12b054
MS		 5888 case BFD_RELOC_AARCH64_TLSGD_ADR_PREL21:
5889 if (is_local)
5890 {
5891 /* Tiny GD->LE relaxation:
07d6d2b8
AM		 5892 adr x0, :tlsgd:var => mrs x1, tpidr_el0
5893 bl __tls_get_addr => add R0, R1, #:tprel_hi12:x, lsl #12
5894 nop => add R0, R0, #:tprel_lo12_nc:x
2d0ca824
YN		 5895
5896 Where R is x for LP64, and x for Ilp32. */
3c12b054
MS		 5897
5898 /* First kill the tls_get_addr reloc on the bl instruction. */
5899 BFD_ASSERT (rel->r_offset + 4 == rel[1].r_offset);
5900
5901 bfd_putl32 (0xd53bd041, contents + rel->r_offset + 0);
2d0ca824
YN		 5902 bfd_putl32 (add_R0_R1, contents + rel->r_offset + 4);
5903 bfd_putl32 (add_R0_R0, contents + rel->r_offset + 8);
3c12b054
MS		 5904
5905 rel[1].r_info = ELFNN_R_INFO (ELFNN_R_SYM (rel->r_info),
5906 AARCH64_R (TLSLE_ADD_TPREL_LO12_NC));
5907 rel[1].r_offset = rel->r_offset + 8;
5908
5909 /* Move the current relocation to the second instruction in
5910 the sequence. */
5911 rel->r_offset += 4;
5912 rel->r_info = ELFNN_R_INFO (ELFNN_R_SYM (rel->r_info),
5913 AARCH64_R (TLSLE_ADD_TPREL_HI12));
5914 return bfd_reloc_continue;
5915 }
5916 else
5917 {
5918 /* Tiny GD->IE relaxation:
07d6d2b8
AM		 5919 adr x0, :tlsgd:var => ldr R0, :gottprel:var
5920 bl __tls_get_addr => mrs x1, tpidr_el0
5921 nop => add R0, R0, R1
2d0ca824
YN		 5922
5923 Where R is x for LP64, and w for Ilp32. */
3c12b054
MS		 5924
5925 /* First kill the tls_get_addr reloc on the bl instruction. */
5926 BFD_ASSERT (rel->r_offset + 4 == rel[1].r_offset);
5927 rel[1].r_info = ELFNN_R_INFO (STN_UNDEF, R_AARCH64_NONE);
5928
2d0ca824 5929 bfd_putl32 (ldr_R0, contents + rel->r_offset);
3c12b054 5930 bfd_putl32 (0xd53bd041, contents + rel->r_offset + 4);
2d0ca824 5931 bfd_putl32 (add_R0_R0_R1, contents + rel->r_offset + 8);
3c12b054
MS		 5932 return bfd_reloc_continue;
5933 }
5934
ac734732
RL		 5935#if ARCH_SIZE == 64
5936 case BFD_RELOC_AARCH64_TLSGD_MOVW_G1:
5937 BFD_ASSERT (ELFNN_R_TYPE (rel[1].r_info) == AARCH64_R (TLSGD_MOVW_G0_NC));
5938 BFD_ASSERT (rel->r_offset + 12 == rel[2].r_offset);
5939 BFD_ASSERT (ELFNN_R_TYPE (rel[2].r_info) == AARCH64_R (CALL26));
5940
5941 if (is_local)
5942 {
5943 /* Large GD->LE relaxation:
07d6d2b8 5944 movz x0, #:tlsgd_g1:var => movz x0, #:tprel_g2:var, lsl #32
ac734732 5945 movk x0, #:tlsgd_g0_nc:var => movk x0, #:tprel_g1_nc:var, lsl #16
07d6d2b8
AM		 5946 add x0, gp, x0 => movk x0, #:tprel_g0_nc:var
5947 bl __tls_get_addr => mrs x1, tpidr_el0
5948 nop => add x0, x0, x1
ac734732
RL		 5949 */
5950 rel[2].r_info = ELFNN_R_INFO (ELFNN_R_SYM (rel->r_info),
5951 AARCH64_R (TLSLE_MOVW_TPREL_G0_NC));
5952 rel[2].r_offset = rel->r_offset + 8;
5953
2d0ca824
YN		 5954 bfd_putl32 (movz_hw_R0, contents + rel->r_offset + 0);
5955 bfd_putl32 (ldr_hw_R0, contents + rel->r_offset + 4);
5956 bfd_putl32 (movk_R0, contents + rel->r_offset + 8);
ac734732 5957 bfd_putl32 (0xd53bd041, contents + rel->r_offset + 12);
2d0ca824 5958 bfd_putl32 (add_R0_R0_R1, contents + rel->r_offset + 16);
ac734732
RL		 5959 }
5960 else
5961 {
5962 /* Large GD->IE relaxation:
07d6d2b8 5963 movz x0, #:tlsgd_g1:var => movz x0, #:gottprel_g1:var, lsl #16
ac734732 5964 movk x0, #:tlsgd_g0_nc:var => movk x0, #:gottprel_g0_nc:var
07d6d2b8
AM		 5965 add x0, gp, x0 => ldr x0, [gp, x0]
5966 bl __tls_get_addr => mrs x1, tpidr_el0
5967 nop => add x0, x0, x1
ac734732
RL		 5968 */
5969 rel[2].r_info = ELFNN_R_INFO (STN_UNDEF, R_AARCH64_NONE);
5970 bfd_putl32 (0xd2a80000, contents + rel->r_offset + 0);
2d0ca824 5971 bfd_putl32 (ldr_R0, contents + rel->r_offset + 8);
ac734732 5972 bfd_putl32 (0xd53bd041, contents + rel->r_offset + 12);
2d0ca824 5973 bfd_putl32 (add_R0_R0_R1, contents + rel->r_offset + 16);
ac734732
RL		 5974 }
5975 return bfd_reloc_continue;
5976
5977 case BFD_RELOC_AARCH64_TLSGD_MOVW_G0_NC:
5978 return bfd_reloc_continue;
5979#endif
5980
043bf05a
MS		 5981 case BFD_RELOC_AARCH64_TLSIE_LD_GOTTPREL_PREL19:
5982 return bfd_reloc_continue;
5983
a6bb11b2 5984 case BFD_RELOC_AARCH64_TLSDESC_LDNN_LO12_NC:
a06ea964
NC		 5985 if (is_local)
5986 {
5987 /* GD->LE relaxation:
5988 ldr xd, [x0, #:tlsdesc_lo12:var] => movk x0, :tprel_g0_nc:var
2d0ca824
YN		 5989
5990 Where R is x for lp64 mode, and w for ILP32 mode. */
5991 bfd_putl32 (movk_R0, contents + rel->r_offset);
a06ea964
NC		 5992 return bfd_reloc_continue;
5993 }
5994 else
5995 {
5996 /* GD->IE relaxation:
2d0ca824
YN		 5997 ldr xd, [x0, #:tlsdesc_lo12:var] => ldr R0, [x0, #:gottprel_lo12:var]
5998
5999 Where R is x for lp64 mode, and w for ILP32 mode. */
a06ea964 6000 insn = bfd_getl32 (contents + rel->r_offset);
2d0ca824 6001 bfd_putl32 (ldr_R0_mask (insn), contents + rel->r_offset);
a06ea964
NC		 6002 return bfd_reloc_continue;
6003 }
6004
a6bb11b2 6005 case BFD_RELOC_AARCH64_TLSGD_ADD_LO12_NC:
a06ea964
NC		 6006 if (is_local)
6007 {
6008 /* GD->LE relaxation
07d6d2b8
AM		 6009 add x0, #:tlsgd_lo12:var => movk R0, :tprel_g0_nc:var
6010 bl __tls_get_addr => mrs x1, tpidr_el0
6011 nop => add R0, R1, R0
2d0ca824
YN		 6012
6013 Where R is x for lp64 mode, and w for ILP32 mode. */
a06ea964
NC		 6014
6015 /* First kill the tls_get_addr reloc on the bl instruction. */
6016 BFD_ASSERT (rel->r_offset + 4 == rel[1].r_offset);
cec5225b 6017 rel[1].r_info = ELFNN_R_INFO (STN_UNDEF, R_AARCH64_NONE);
a06ea964 6018
2d0ca824 6019 bfd_putl32 (movk_R0, contents + rel->r_offset);
a06ea964 6020 bfd_putl32 (0xd53bd041, contents + rel->r_offset + 4);
2d0ca824 6021 bfd_putl32 (add_R0_R0_R1, contents + rel->r_offset + 8);
a06ea964
NC		 6022 return bfd_reloc_continue;
6023 }
6024 else
6025 {
6026 /* GD->IE relaxation
07d6d2b8
AM		 6027 ADD x0, #:tlsgd_lo12:var => ldr R0, [x0, #:gottprel_lo12:var]
6028 BL __tls_get_addr => mrs x1, tpidr_el0
a06ea964 6029 R_AARCH64_CALL26
07d6d2b8 6030 NOP => add R0, R1, R0
5cd1d8bc
YN		 6031
6032 Where R is x for lp64 mode, and w for ilp32 mode. */
a06ea964 6033
a6bb11b2 6034 BFD_ASSERT (ELFNN_R_TYPE (rel[1].r_info) == AARCH64_R (CALL26));
a06ea964
NC		 6035
6036 /* Remove the relocation on the BL instruction. */
cec5225b 6037 rel[1].r_info = ELFNN_R_INFO (STN_UNDEF, R_AARCH64_NONE);
a06ea964 6038
a06ea964
NC		 6039 /* We choose to fixup the BL and NOP instructions using the
6040 offset from the second relocation to allow flexibility in
6041 scheduling instructions between the ADD and BL. */
2d0ca824 6042 bfd_putl32 (ldr_R0_x0, contents + rel->r_offset);
5cd1d8bc 6043 bfd_putl32 (0xd53bd041, contents + rel[1].r_offset);
2d0ca824 6044 bfd_putl32 (add_R0_R0_R1, contents + rel[1].r_offset + 4);
a06ea964
NC		 6045 return bfd_reloc_continue;
6046 }
6047
0484b454 6048 case BFD_RELOC_AARCH64_TLSDESC_ADD:
f955cccf 6049 case BFD_RELOC_AARCH64_TLSDESC_ADD_LO12:
a6bb11b2 6050 case BFD_RELOC_AARCH64_TLSDESC_CALL:
a06ea964 6051 /* GD->IE/LE relaxation:
07d6d2b8
AM		 6052 add x0, x0, #:tlsdesc_lo12:var => nop
6053 blr xd => nop
a06ea964
NC		 6054 */
6055 bfd_putl32 (INSN_NOP, contents + rel->r_offset);
6056 return bfd_reloc_ok;
6057
0484b454
RL		 6058 case BFD_RELOC_AARCH64_TLSDESC_LDR:
6059 if (is_local)
6060 {
6061 /* GD->LE relaxation:
2d0ca824
YN		 6062 ldr xd, [gp, xn] => movk R0, #:tprel_g0_nc:var
6063
6064 Where R is x for lp64 mode, and w for ILP32 mode. */
6065 bfd_putl32 (movk_R0, contents + rel->r_offset);
0484b454
RL		 6066 return bfd_reloc_continue;
6067 }
6068 else
6069 {
6070 /* GD->IE relaxation:
2d0ca824
YN		 6071 ldr xd, [gp, xn] => ldr R0, [gp, xn]
6072
6073 Where R is x for lp64 mode, and w for ILP32 mode. */
0484b454 6074 insn = bfd_getl32 (contents + rel->r_offset);
2d0ca824 6075 bfd_putl32 (ldr_R0_mask (insn), contents + rel->r_offset);
0484b454
RL		 6076 return bfd_reloc_ok;
6077 }
6078
6079 case BFD_RELOC_AARCH64_TLSDESC_OFF_G0_NC:
6080 /* GD->LE relaxation:
2d0ca824 6081 movk xd, #:tlsdesc_off_g0_nc:var => movk R0, #:tprel_g1_nc:var, lsl #16
0484b454 6082 GD->IE relaxation:
2d0ca824
YN		 6083 movk xd, #:tlsdesc_off_g0_nc:var => movk Rd, #:gottprel_g0_nc:var
6084
6085 Where R is x for lp64 mode, and w for ILP32 mode. */
0484b454 6086 if (is_local)
2d0ca824 6087 bfd_putl32 (ldr_hw_R0, contents + rel->r_offset);
0484b454
RL		 6088 return bfd_reloc_continue;
6089
6090 case BFD_RELOC_AARCH64_TLSDESC_OFF_G1:
6091 if (is_local)
6092 {
6093 /* GD->LE relaxation:
2d0ca824
YN		 6094 movz xd, #:tlsdesc_off_g1:var => movz R0, #:tprel_g2:var, lsl #32
6095
6096 Where R is x for lp64 mode, and w for ILP32 mode. */
6097 bfd_putl32 (movz_hw_R0, contents + rel->r_offset);
0484b454
RL		 6098 return bfd_reloc_continue;
6099 }
6100 else
6101 {
6102 /* GD->IE relaxation:
2d0ca824
YN		 6103 movz xd, #:tlsdesc_off_g1:var => movz Rd, #:gottprel_g1:var, lsl #16
6104
6105 Where R is x for lp64 mode, and w for ILP32 mode. */
0484b454 6106 insn = bfd_getl32 (contents + rel->r_offset);
2d0ca824 6107 bfd_putl32 (movz_R0 | (insn & 0x1f), contents + rel->r_offset);
0484b454
RL		 6108 return bfd_reloc_continue;
6109 }
6110
a6bb11b2 6111 case BFD_RELOC_AARCH64_TLSIE_ADR_GOTTPREL_PAGE21:
a06ea964 6112 /* IE->LE relaxation:
07d6d2b8 6113 adrp xd, :gottprel:var => movz Rd, :tprel_g1: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 (movz_R0 | (insn & 0x1f), contents + rel->r_offset);
a06ea964
NC		 6120 }
6121 return bfd_reloc_continue;
6122
a6bb11b2 6123 case BFD_RELOC_AARCH64_TLSIE_LDNN_GOTTPREL_LO12_NC:
a06ea964 6124 /* IE->LE relaxation:
07d6d2b8 6125 ldr xd, [xm, #:gottprel_lo12:var] => movk Rd, :tprel_g0_nc:var
2d0ca824
YN		 6126
6127 Where R is x for lp64 mode, and w for ILP32 mode. */
a06ea964
NC		 6128 if (is_local)
6129 {
6130 insn = bfd_getl32 (contents + rel->r_offset);
2d0ca824 6131 bfd_putl32 (movk_R0 | (insn & 0x1f), contents + rel->r_offset);
a06ea964
NC		 6132 }
6133 return bfd_reloc_continue;
6134
259364ad
JW		 6135 case BFD_RELOC_AARCH64_TLSLD_ADR_PREL21:
6136 /* LD->LE relaxation (tiny):
6137 adr x0, :tlsldm:x => mrs x0, tpidr_el0
c1fc2d7e
YN		 6138 bl __tls_get_addr => add R0, R0, TCB_SIZE
6139
6140 Where R is x for lp64 mode, and w for ilp32 mode. */
259364ad
JW		 6141 if (is_local)
6142 {
6143 BFD_ASSERT (rel->r_offset + 4 == rel[1].r_offset);
6144 BFD_ASSERT (ELFNN_R_TYPE (rel[1].r_info) == AARCH64_R (CALL26));
6145 /* No need of CALL26 relocation for tls_get_addr. */
6146 rel[1].r_info = ELFNN_R_INFO (STN_UNDEF, R_AARCH64_NONE);
6147 bfd_putl32 (0xd53bd040, contents + rel->r_offset + 0);
2d0ca824
YN		 6148 bfd_putl32 (add_R0_R0 | (TCB_SIZE << 10),
6149 contents + rel->r_offset + 4);
259364ad
JW		 6150 return bfd_reloc_ok;
6151 }
6152 return bfd_reloc_continue;
6153
6154 case BFD_RELOC_AARCH64_TLSLD_ADR_PAGE21:
6155 /* LD->LE relaxation (small):
6156 adrp x0, :tlsldm:x => mrs x0, tpidr_el0
6157 */
6158 if (is_local)
6159 {
6160 bfd_putl32 (0xd53bd040, contents + rel->r_offset);
6161 return bfd_reloc_ok;
6162 }
6163 return bfd_reloc_continue;
6164
6165 case BFD_RELOC_AARCH64_TLSLD_ADD_LO12_NC:
6166 /* LD->LE relaxation (small):
c1fc2d7e 6167 add x0, #:tlsldm_lo12:x => add R0, R0, TCB_SIZE
259364ad 6168 bl __tls_get_addr => nop
c1fc2d7e
YN		 6169
6170 Where R is x for lp64 mode, and w for ilp32 mode. */
259364ad
JW		 6171 if (is_local)
6172 {
6173 BFD_ASSERT (rel->r_offset + 4 == rel[1].r_offset);
6174 BFD_ASSERT (ELFNN_R_TYPE (rel[1].r_info) == AARCH64_R (CALL26));
6175 /* No need of CALL26 relocation for tls_get_addr. */
6176 rel[1].r_info = ELFNN_R_INFO (STN_UNDEF, R_AARCH64_NONE);
2d0ca824
YN		 6177 bfd_putl32 (add_R0_R0 | (TCB_SIZE << 10),
6178 contents + rel->r_offset + 0);
c1fc2d7e 6179 bfd_putl32 (INSN_NOP, contents + rel->r_offset + 4);
259364ad
JW		 6180 return bfd_reloc_ok;
6181 }
6182 return bfd_reloc_continue;
6183
a06ea964
NC		 6184 default:
6185 return bfd_reloc_continue;
6186 }
6187
6188 return bfd_reloc_ok;
6189}
6190
6191/* Relocate an AArch64 ELF section. */
6192
6193static bfd_boolean
cec5225b 6194elfNN_aarch64_relocate_section (bfd *output_bfd,
a06ea964
NC		 6195 struct bfd_link_info *info,
6196 bfd *input_bfd,
6197 asection *input_section,
6198 bfd_byte *contents,
6199 Elf_Internal_Rela *relocs,
6200 Elf_Internal_Sym *local_syms,
6201 asection **local_sections)
6202{
6203 Elf_Internal_Shdr *symtab_hdr;
6204 struct elf_link_hash_entry **sym_hashes;
6205 Elf_Internal_Rela *rel;
6206 Elf_Internal_Rela *relend;
6207 const char *name;
cec5225b 6208 struct elf_aarch64_link_hash_table *globals;
a06ea964
NC		 6209 bfd_boolean save_addend = FALSE;
6210 bfd_vma addend = 0;
6211
cec5225b 6212 globals = elf_aarch64_hash_table (info);
a06ea964
NC		 6213
6214 symtab_hdr = &elf_symtab_hdr (input_bfd);
6215 sym_hashes = elf_sym_hashes (input_bfd);
6216
6217 rel = relocs;
6218 relend = relocs + input_section->reloc_count;
6219 for (; rel < relend; rel++)
6220 {
6221 unsigned int r_type;
a6bb11b2
YZ		 6222 bfd_reloc_code_real_type bfd_r_type;
6223 bfd_reloc_code_real_type relaxed_bfd_r_type;
a06ea964
NC		 6224 reloc_howto_type *howto;
6225 unsigned long r_symndx;
6226 Elf_Internal_Sym *sym;
6227 asection *sec;
6228 struct elf_link_hash_entry *h;
6229 bfd_vma relocation;
6230 bfd_reloc_status_type r;
6231 arelent bfd_reloc;
6232 char sym_type;
6233 bfd_boolean unresolved_reloc = FALSE;
6234 char *error_message = NULL;
6235
cec5225b
YZ		 6236 r_symndx = ELFNN_R_SYM (rel->r_info);
6237 r_type = ELFNN_R_TYPE (rel->r_info);
a06ea964 6238
0aa13fee
AM		 6239 bfd_reloc.howto = elfNN_aarch64_howto_from_type (input_bfd, r_type);
6240 howto = bfd_reloc.howto;
a06ea964 6241
7fcfd62d 6242 if (howto == NULL)
47aeb64c
NC		 6243 return _bfd_unrecognized_reloc (input_bfd, input_section, r_type);
6244
a6bb11b2 6245 bfd_r_type = elfNN_aarch64_bfd_reloc_from_howto (howto);
7fcfd62d 6246
a06ea964
NC		 6247 h = NULL;
6248 sym = NULL;
6249 sec = NULL;
6250
6251 if (r_symndx < symtab_hdr->sh_info)
6252 {
6253 sym = local_syms + r_symndx;
cec5225b 6254 sym_type = ELFNN_ST_TYPE (sym->st_info);
a06ea964
NC		 6255 sec = local_sections[r_symndx];
6256
6257 /* An object file might have a reference to a local
6258 undefined symbol. This is a daft object file, but we
6259 should at least do something about it. */
6260 if (r_type != R_AARCH64_NONE && r_type != R_AARCH64_NULL
6261 && bfd_is_und_section (sec)
6262 && ELF_ST_BIND (sym->st_info) != STB_WEAK)
1a72702b
AM		 6263 (*info->callbacks->undefined_symbol)
6264 (info, bfd_elf_string_from_elf_section
6265 (input_bfd, symtab_hdr->sh_link, sym->st_name),
6266 input_bfd, input_section, rel->r_offset, TRUE);
a06ea964 6267
a06ea964 6268 relocation = _bfd_elf_rela_local_sym (output_bfd, sym, &sec, rel);
1419bbe5
WN		 6269
6270 /* Relocate against local STT_GNU_IFUNC symbol. */
0e1862bb 6271 if (!bfd_link_relocatable (info)
1419bbe5
WN		 6272 && ELF_ST_TYPE (sym->st_info) == STT_GNU_IFUNC)
6273 {
6274 h = elfNN_aarch64_get_local_sym_hash (globals, input_bfd,
6275 rel, FALSE);
6276 if (h == NULL)
6277 abort ();
6278
6279 /* Set STT_GNU_IFUNC symbol value. */
6280 h->root.u.def.value = sym->st_value;
6281 h->root.u.def.section = sec;
6282 }
a06ea964
NC		 6283 }
6284 else
6285 {
62d887d4 6286 bfd_boolean warned, ignored;
a06ea964
NC		 6287
6288 RELOC_FOR_GLOBAL_SYMBOL (info, input_bfd, input_section, rel,
6289 r_symndx, symtab_hdr, sym_hashes,
6290 h, sec, relocation,
62d887d4 6291 unresolved_reloc, warned, ignored);
a06ea964
NC		 6292
6293 sym_type = h->type;
6294 }
6295
6296 if (sec != NULL && discarded_section (sec))
6297 RELOC_AGAINST_DISCARDED_SECTION (info, input_bfd, input_section,
6298 rel, 1, relend, howto, 0, contents);
6299
0e1862bb 6300 if (bfd_link_relocatable (info))
2e0488d3 6301 continue;
a06ea964
NC		 6302
6303 if (h != NULL)
6304 name = h->root.root.string;
6305 else
6306 {
6307 name = (bfd_elf_string_from_elf_section
6308 (input_bfd, symtab_hdr->sh_link, sym->st_name));
6309 if (name == NULL || *name == '\0')
6310 name = bfd_section_name (input_bfd, sec);
6311 }
6312
6313 if (r_symndx != 0
6314 && r_type != R_AARCH64_NONE
6315 && r_type != R_AARCH64_NULL
6316 && (h == NULL
6317 || h->root.type == bfd_link_hash_defined
6318 || h->root.type == bfd_link_hash_defweak)
a6bb11b2 6319 && IS_AARCH64_TLS_RELOC (bfd_r_type) != (sym_type == STT_TLS))
a06ea964 6320 {
4eca0228 6321 _bfd_error_handler
a06ea964 6322 ((sym_type == STT_TLS
695344c0 6323 /* xgettext:c-format */
2dcf00ce 6324 ? _("%pB(%pA+%#" PRIx64 "): %s used with TLS symbol %s")
695344c0 6325 /* xgettext:c-format */
2dcf00ce 6326 : _("%pB(%pA+%#" PRIx64 "): %s used with non-TLS symbol %s")),
a06ea964 6327 input_bfd,
2dcf00ce 6328 input_section, (uint64_t) rel->r_offset, howto->name, name);
a06ea964
NC		 6329 }
6330
a06ea964 6331 /* We relax only if we can see that there can be a valid transition
07d6d2b8
AM		 6332 from a reloc type to another.
6333 We call elfNN_aarch64_final_link_relocate unless we're completely
6334 done, i.e., the relaxation produced the final output we want. */
a06ea964 6335
a6bb11b2
YZ		 6336 relaxed_bfd_r_type = aarch64_tls_transition (input_bfd, info, r_type,
6337 h, r_symndx);
6338 if (relaxed_bfd_r_type != bfd_r_type)
a06ea964 6339 {
a6bb11b2
YZ		 6340 bfd_r_type = relaxed_bfd_r_type;
6341 howto = elfNN_aarch64_howto_from_bfd_reloc (bfd_r_type);
6342 BFD_ASSERT (howto != NULL);
6343 r_type = howto->type;
06d2788c 6344 r = elfNN_aarch64_tls_relax (globals, input_bfd, contents, rel, h);
a06ea964
NC		 6345 unresolved_reloc = 0;
6346 }
6347 else
6348 r = bfd_reloc_continue;
6349
6350 /* There may be multiple consecutive relocations for the
07d6d2b8
AM		 6351 same offset. In that case we are supposed to treat the
6352 output of each relocation as the addend for the next. */
a06ea964
NC		 6353 if (rel + 1 < relend
6354 && rel->r_offset == rel[1].r_offset
cec5225b
YZ		 6355 && ELFNN_R_TYPE (rel[1].r_info) != R_AARCH64_NONE
6356 && ELFNN_R_TYPE (rel[1].r_info) != R_AARCH64_NULL)
a06ea964
NC		 6357 save_addend = TRUE;
6358 else
6359 save_addend = FALSE;
6360
6361 if (r == bfd_reloc_continue)
cec5225b 6362 r = elfNN_aarch64_final_link_relocate (howto, input_bfd, output_bfd,
a06ea964
NC		 6363 input_section, contents, rel,
6364 relocation, info, sec,
6365 h, &unresolved_reloc,
1419bbe5 6366 save_addend, &addend, sym);
a06ea964 6367
0aa13fee 6368 switch (elfNN_aarch64_bfd_reloc_from_type (input_bfd, r_type))
a06ea964 6369 {
ce336788 6370 case BFD_RELOC_AARCH64_TLSGD_ADD_LO12_NC:
a6bb11b2 6371 case BFD_RELOC_AARCH64_TLSGD_ADR_PAGE21:
3c12b054 6372 case BFD_RELOC_AARCH64_TLSGD_ADR_PREL21:
7ba7cfe4 6373 case BFD_RELOC_AARCH64_TLSGD_MOVW_G0_NC:
94facae3 6374 case BFD_RELOC_AARCH64_TLSGD_MOVW_G1:
73f925cc 6375 case BFD_RELOC_AARCH64_TLSLD_ADD_LO12_NC:
f69e4920 6376 case BFD_RELOC_AARCH64_TLSLD_ADR_PAGE21:
77a69ff8 6377 case BFD_RELOC_AARCH64_TLSLD_ADR_PREL21:
a06ea964
NC		 6378 if (! symbol_got_offset_mark_p (input_bfd, h, r_symndx))
6379 {
6380 bfd_boolean need_relocs = FALSE;
6381 bfd_byte *loc;
6382 int indx;
6383 bfd_vma off;
6384
6385 off = symbol_got_offset (input_bfd, h, r_symndx);
6386 indx = h && h->dynindx != -1 ? h->dynindx : 0;
6387
6388 need_relocs =
6dda7875 6389 (!bfd_link_executable (info) || indx != 0) &&
a06ea964
NC		 6390 (h == NULL
6391 || ELF_ST_VISIBILITY (h->other) == STV_DEFAULT
6392 || h->root.type != bfd_link_hash_undefweak);
6393
6394 BFD_ASSERT (globals->root.srelgot != NULL);
6395
6396 if (need_relocs)
6397 {
6398 Elf_Internal_Rela rela;
a6bb11b2 6399 rela.r_info = ELFNN_R_INFO (indx, AARCH64_R (TLS_DTPMOD));
a06ea964
NC		 6400 rela.r_addend = 0;
6401 rela.r_offset = globals->root.sgot->output_section->vma +
6402 globals->root.sgot->output_offset + off;
6403
6404
6405 loc = globals->root.srelgot->contents;
6406 loc += globals->root.srelgot->reloc_count++
6407 * RELOC_SIZE (htab);
cec5225b 6408 bfd_elfNN_swap_reloca_out (output_bfd, &rela, loc);
a06ea964 6409
f69e4920 6410 bfd_reloc_code_real_type real_type =
0aa13fee 6411 elfNN_aarch64_bfd_reloc_from_type (input_bfd, r_type);
f69e4920
JW		 6412
6413 if (real_type == BFD_RELOC_AARCH64_TLSLD_ADR_PREL21
73f925cc
JW		 6414 || real_type == BFD_RELOC_AARCH64_TLSLD_ADR_PAGE21
6415 || real_type == BFD_RELOC_AARCH64_TLSLD_ADD_LO12_NC)
77a69ff8
JW		 6416 {
6417 /* For local dynamic, don't generate DTPREL in any case.
6418 Initialize the DTPREL slot into zero, so we get module
6419 base address when invoke runtime TLS resolver. */
6420 bfd_put_NN (output_bfd, 0,
6421 globals->root.sgot->contents + off
6422 + GOT_ENTRY_SIZE);
6423 }
6424 else if (indx == 0)
a06ea964 6425 {
cec5225b 6426 bfd_put_NN (output_bfd,
a06ea964
NC		 6427 relocation - dtpoff_base (info),
6428 globals->root.sgot->contents + off
6429 + GOT_ENTRY_SIZE);
6430 }
6431 else
6432 {
6433 /* This TLS symbol is global. We emit a
6434 relocation to fixup the tls offset at load
6435 time. */
6436 rela.r_info =
a6bb11b2 6437 ELFNN_R_INFO (indx, AARCH64_R (TLS_DTPREL));
a06ea964
NC		 6438 rela.r_addend = 0;
6439 rela.r_offset =
6440 (globals->root.sgot->output_section->vma
6441 + globals->root.sgot->output_offset + off
6442 + GOT_ENTRY_SIZE);
6443
6444 loc = globals->root.srelgot->contents;
6445 loc += globals->root.srelgot->reloc_count++
6446 * RELOC_SIZE (globals);
cec5225b
YZ		 6447 bfd_elfNN_swap_reloca_out (output_bfd, &rela, loc);
6448 bfd_put_NN (output_bfd, (bfd_vma) 0,
a06ea964
NC		 6449 globals->root.sgot->contents + off
6450 + GOT_ENTRY_SIZE);
6451 }
6452 }
6453 else
6454 {
cec5225b 6455 bfd_put_NN (output_bfd, (bfd_vma) 1,
a06ea964 6456 globals->root.sgot->contents + off);
cec5225b 6457 bfd_put_NN (output_bfd,
a06ea964
NC		 6458 relocation - dtpoff_base (info),
6459 globals->root.sgot->contents + off
6460 + GOT_ENTRY_SIZE);
6461 }
6462
6463 symbol_got_offset_mark (input_bfd, h, r_symndx);
6464 }
6465 break;
6466
a6bb11b2
YZ		 6467 case BFD_RELOC_AARCH64_TLSIE_ADR_GOTTPREL_PAGE21:
6468 case BFD_RELOC_AARCH64_TLSIE_LDNN_GOTTPREL_LO12_NC:
043bf05a 6469 case BFD_RELOC_AARCH64_TLSIE_LD_GOTTPREL_PREL19:
3b957e5b
RL		 6470 case BFD_RELOC_AARCH64_TLSIE_MOVW_GOTTPREL_G0_NC:
6471 case BFD_RELOC_AARCH64_TLSIE_MOVW_GOTTPREL_G1:
a06ea964
NC		 6472 if (! symbol_got_offset_mark_p (input_bfd, h, r_symndx))
6473 {
6474 bfd_boolean need_relocs = FALSE;
6475 bfd_byte *loc;
6476 int indx;
6477 bfd_vma off;
6478
6479 off = symbol_got_offset (input_bfd, h, r_symndx);
6480
6481 indx = h && h->dynindx != -1 ? h->dynindx : 0;
6482
6483 need_relocs =
6dda7875 6484 (!bfd_link_executable (info) || indx != 0) &&
a06ea964
NC		 6485 (h == NULL
6486 || ELF_ST_VISIBILITY (h->other) == STV_DEFAULT
6487 || h->root.type != bfd_link_hash_undefweak);
6488
6489 BFD_ASSERT (globals->root.srelgot != NULL);
6490
6491 if (need_relocs)
6492 {
6493 Elf_Internal_Rela rela;
6494
6495 if (indx == 0)
6496 rela.r_addend = relocation - dtpoff_base (info);
6497 else
6498 rela.r_addend = 0;
6499
a6bb11b2 6500 rela.r_info = ELFNN_R_INFO (indx, AARCH64_R (TLS_TPREL));
a06ea964
NC		 6501 rela.r_offset = globals->root.sgot->output_section->vma +
6502 globals->root.sgot->output_offset + off;
6503
6504 loc = globals->root.srelgot->contents;
6505 loc += globals->root.srelgot->reloc_count++
6506 * RELOC_SIZE (htab);
6507
cec5225b 6508 bfd_elfNN_swap_reloca_out (output_bfd, &rela, loc);
a06ea964 6509
cec5225b 6510 bfd_put_NN (output_bfd, rela.r_addend,
a06ea964
NC		 6511 globals->root.sgot->contents + off);
6512 }
6513 else
cec5225b 6514 bfd_put_NN (output_bfd, relocation - tpoff_base (info),
a06ea964
NC		 6515 globals->root.sgot->contents + off);
6516
6517 symbol_got_offset_mark (input_bfd, h, r_symndx);
6518 }
6519 break;
6520
f955cccf 6521 case BFD_RELOC_AARCH64_TLSDESC_ADD_LO12:
a6bb11b2 6522 case BFD_RELOC_AARCH64_TLSDESC_ADR_PAGE21:
389b8029 6523 case BFD_RELOC_AARCH64_TLSDESC_ADR_PREL21:
a6bb11b2 6524 case BFD_RELOC_AARCH64_TLSDESC_LDNN_LO12_NC:
1ada945d 6525 case BFD_RELOC_AARCH64_TLSDESC_LD_PREL19:
0484b454
RL		 6526 case BFD_RELOC_AARCH64_TLSDESC_OFF_G0_NC:
6527 case BFD_RELOC_AARCH64_TLSDESC_OFF_G1:
a06ea964
NC		 6528 if (! symbol_tlsdesc_got_offset_mark_p (input_bfd, h, r_symndx))
6529 {
6530 bfd_boolean need_relocs = FALSE;
6531 int indx = h && h->dynindx != -1 ? h->dynindx : 0;
6532 bfd_vma off = symbol_tlsdesc_got_offset (input_bfd, h, r_symndx);
6533
6534 need_relocs = (h == NULL
6535 || ELF_ST_VISIBILITY (h->other) == STV_DEFAULT
6536 || h->root.type != bfd_link_hash_undefweak);
6537
6538 BFD_ASSERT (globals->root.srelgot != NULL);
6539 BFD_ASSERT (globals->root.sgot != NULL);
6540
6541 if (need_relocs)
6542 {
6543 bfd_byte *loc;
6544 Elf_Internal_Rela rela;
a6bb11b2
YZ		 6545 rela.r_info = ELFNN_R_INFO (indx, AARCH64_R (TLSDESC));
6546
a06ea964
NC		 6547 rela.r_addend = 0;
6548 rela.r_offset = (globals->root.sgotplt->output_section->vma
6549 + globals->root.sgotplt->output_offset
6550 + off + globals->sgotplt_jump_table_size);
6551
6552 if (indx == 0)
6553 rela.r_addend = relocation - dtpoff_base (info);
6554
6555 /* Allocate the next available slot in the PLT reloc
6556 section to hold our R_AARCH64_TLSDESC, the next
6557 available slot is determined from reloc_count,
6558 which we step. But note, reloc_count was
6559 artifically moved down while allocating slots for
6560 real PLT relocs such that all of the PLT relocs
6561 will fit above the initial reloc_count and the
6562 extra stuff will fit below. */
6563 loc = globals->root.srelplt->contents;
6564 loc += globals->root.srelplt->reloc_count++
6565 * RELOC_SIZE (globals);
6566
cec5225b 6567 bfd_elfNN_swap_reloca_out (output_bfd, &rela, loc);
a06ea964 6568
cec5225b 6569 bfd_put_NN (output_bfd, (bfd_vma) 0,
a06ea964
NC		 6570 globals->root.sgotplt->contents + off +
6571 globals->sgotplt_jump_table_size);
cec5225b 6572 bfd_put_NN (output_bfd, (bfd_vma) 0,
a06ea964
NC		 6573 globals->root.sgotplt->contents + off +
6574 globals->sgotplt_jump_table_size +
6575 GOT_ENTRY_SIZE);
6576 }
6577
6578 symbol_tlsdesc_got_offset_mark (input_bfd, h, r_symndx);
6579 }
6580 break;
a6bb11b2
YZ		 6581 default:
6582 break;
a06ea964
NC		 6583 }
6584
a06ea964 6585 /* Dynamic relocs are not propagated for SEC_DEBUGGING sections
07d6d2b8
AM		 6586 because such sections are not SEC_ALLOC and thus ld.so will
6587 not process them. */
a06ea964
NC		 6588 if (unresolved_reloc
6589 && !((input_section->flags & SEC_DEBUGGING) != 0
6590 && h->def_dynamic)
6591 && _bfd_elf_section_offset (output_bfd, info, input_section,
6592 +rel->r_offset) != (bfd_vma) - 1)
6593 {
4eca0228 6594 _bfd_error_handler
695344c0 6595 /* xgettext:c-format */
2dcf00ce
AM		 6596 (_("%pB(%pA+%#" PRIx64 "): "
6597 "unresolvable %s relocation against symbol `%s'"),
6598 input_bfd, input_section, (uint64_t) rel->r_offset, howto->name,
a06ea964
NC		 6599 h->root.root.string);
6600 return FALSE;
6601 }
6602
6603 if (r != bfd_reloc_ok && r != bfd_reloc_continue)
6604 {
c674f5cd 6605 bfd_reloc_code_real_type real_r_type
0aa13fee 6606 = elfNN_aarch64_bfd_reloc_from_type (input_bfd, r_type);
c674f5cd 6607
a06ea964
NC		 6608 switch (r)
6609 {
6610 case bfd_reloc_overflow:
1a72702b
AM		 6611 (*info->callbacks->reloc_overflow)
6612 (info, (h ? &h->root : NULL), name, howto->name, (bfd_vma) 0,
6613 input_bfd, input_section, rel->r_offset);
c674f5cd
JW		 6614 if (real_r_type == BFD_RELOC_AARCH64_LD64_GOTPAGE_LO15
6615 || real_r_type == BFD_RELOC_AARCH64_LD32_GOTPAGE_LO14)
6616 {
6617 (*info->callbacks->warning)
6618 (info,
90b6238f 6619 _("too many GOT entries for -fpic, "
c674f5cd
JW		 6620 "please recompile with -fPIC"),
6621 name, input_bfd, input_section, rel->r_offset);
6622 return FALSE;
6623 }
027e9c75
NC		 6624 /* Overflow can occur when a variable is referenced with a type
6625 that has a larger alignment than the type with which it was
6626 declared. eg:
6627 file1.c: extern int foo; int a (void) { return foo; }
6628 file2.c: char bar, foo, baz;
6629 If the variable is placed into a data section at an offset
6630 that is incompatible with the larger alignment requirement
6631 overflow will occur. (Strictly speaking this is not overflow
6632 but rather an alignment problem, but the bfd_reloc_ error
6633 enum does not have a value to cover that situation).
6634
6635 Try to catch this situation here and provide a more helpful
6636 error message to the user. */
6637 if (addend & ((1 << howto->rightshift) - 1)
6638 /* FIXME: Are we testing all of the appropriate reloc
6639 types here ? */
6640 && (real_r_type == BFD_RELOC_AARCH64_LD_LO19_PCREL
6641 || real_r_type == BFD_RELOC_AARCH64_LDST16_LO12
6642 || real_r_type == BFD_RELOC_AARCH64_LDST32_LO12
6643 || real_r_type == BFD_RELOC_AARCH64_LDST64_LO12
6644 || real_r_type == BFD_RELOC_AARCH64_LDST128_LO12))
6645 {
6646 info->callbacks->warning
90b6238f 6647 (info, _("one possible cause of this error is that the \
027e9c75 6648symbol is being referenced in the indicated code as if it had a larger \
90b6238f 6649alignment than was declared where it was defined"),
027e9c75
NC		 6650 name, input_bfd, input_section, rel->r_offset);
6651 }
a06ea964
NC		 6652 break;
6653
6654 case bfd_reloc_undefined:
1a72702b
AM		 6655 (*info->callbacks->undefined_symbol)
6656 (info, name, input_bfd, input_section, rel->r_offset, TRUE);
a06ea964
NC		 6657 break;
6658
6659 case bfd_reloc_outofrange:
6660 error_message = _("out of range");
6661 goto common_error;
6662
6663 case bfd_reloc_notsupported:
6664 error_message = _("unsupported relocation");
6665 goto common_error;
6666
6667 case bfd_reloc_dangerous:
6668 /* error_message should already be set. */
6669 goto common_error;
6670
6671 default:
6672 error_message = _("unknown error");
6673 /* Fall through. */
6674
6675 common_error:
6676 BFD_ASSERT (error_message != NULL);
1a72702b
AM		 6677 (*info->callbacks->reloc_dangerous)
6678 (info, error_message, input_bfd, input_section, rel->r_offset);
a06ea964
NC		 6679 break;
6680 }
6681 }
027e9c75
NC		 6682
6683 if (!save_addend)
6684 addend = 0;
a06ea964
NC		 6685 }
6686
6687 return TRUE;
6688}
6689
6690/* Set the right machine number. */
6691
6692static bfd_boolean
cec5225b 6693elfNN_aarch64_object_p (bfd *abfd)
a06ea964 6694{
cec5225b
YZ		 6695#if ARCH_SIZE == 32
6696 bfd_default_set_arch_mach (abfd, bfd_arch_aarch64, bfd_mach_aarch64_ilp32);
6697#else
a06ea964 6698 bfd_default_set_arch_mach (abfd, bfd_arch_aarch64, bfd_mach_aarch64);
cec5225b 6699#endif
a06ea964
NC		 6700 return TRUE;
6701}
6702
6703/* Function to keep AArch64 specific flags in the ELF header. */
6704
6705static bfd_boolean
cec5225b 6706elfNN_aarch64_set_private_flags (bfd *abfd, flagword flags)
a06ea964
NC		 6707{
6708 if (elf_flags_init (abfd) && elf_elfheader (abfd)->e_flags != flags)
6709 {
6710 }
6711 else
6712 {
6713 elf_elfheader (abfd)->e_flags = flags;
6714 elf_flags_init (abfd) = TRUE;
6715 }
6716
6717 return TRUE;
6718}
6719
a06ea964
NC		 6720/* Merge backend specific data from an object file to the output
6721 object file when linking. */
6722
6723static bfd_boolean
50e03d47 6724elfNN_aarch64_merge_private_bfd_data (bfd *ibfd, struct bfd_link_info *info)
a06ea964 6725{
50e03d47 6726 bfd *obfd = info->output_bfd;
a06ea964
NC		 6727 flagword out_flags;
6728 flagword in_flags;
6729 bfd_boolean flags_compatible = TRUE;
6730 asection *sec;
6731
6732 /* Check if we have the same endianess. */
50e03d47 6733 if (!_bfd_generic_verify_endian_match (ibfd, info))
a06ea964
NC		 6734 return FALSE;
6735
6736 if (!is_aarch64_elf (ibfd) || !is_aarch64_elf (obfd))
6737 return TRUE;
6738
6739 /* The input BFD must have had its flags initialised. */
6740 /* The following seems bogus to me -- The flags are initialized in
6741 the assembler but I don't think an elf_flags_init field is
6742 written into the object. */
6743 /* BFD_ASSERT (elf_flags_init (ibfd)); */
6744
6745 in_flags = elf_elfheader (ibfd)->e_flags;
6746 out_flags = elf_elfheader (obfd)->e_flags;
6747
6748 if (!elf_flags_init (obfd))
6749 {
6750 /* If the input is the default architecture and had the default
07d6d2b8
AM		 6751 flags then do not bother setting the flags for the output
6752 architecture, instead allow future merges to do this. If no
6753 future merges ever set these flags then they will retain their
6754 uninitialised values, which surprise surprise, correspond
6755 to the default values. */
a06ea964
NC		 6756 if (bfd_get_arch_info (ibfd)->the_default
6757 && elf_elfheader (ibfd)->e_flags == 0)
6758 return TRUE;
6759
6760 elf_flags_init (obfd) = TRUE;
6761 elf_elfheader (obfd)->e_flags = in_flags;
6762
6763 if (bfd_get_arch (obfd) == bfd_get_arch (ibfd)
6764 && bfd_get_arch_info (obfd)->the_default)
6765 return bfd_set_arch_mach (obfd, bfd_get_arch (ibfd),
6766 bfd_get_mach (ibfd));
6767
6768 return TRUE;
6769 }
6770
6771 /* Identical flags must be compatible. */
6772 if (in_flags == out_flags)
6773 return TRUE;
6774
6775 /* Check to see if the input BFD actually contains any sections. If
6776 not, its flags may not have been initialised either, but it
6777 cannot actually cause any incompatiblity. Do not short-circuit
6778 dynamic objects; their section list may be emptied by
6779 elf_link_add_object_symbols.
6780
6781 Also check to see if there are no code sections in the input.
6782 In this case there is no need to check for code specific flags.
6783 XXX - do we need to worry about floating-point format compatability
6784 in data sections ? */
6785 if (!(ibfd->flags & DYNAMIC))
6786 {
6787 bfd_boolean null_input_bfd = TRUE;
6788 bfd_boolean only_data_sections = TRUE;
6789
6790 for (sec = ibfd->sections; sec != NULL; sec = sec->next)
6791 {
6792 if ((bfd_get_section_flags (ibfd, sec)
6793 & (SEC_LOAD | SEC_CODE | SEC_HAS_CONTENTS))
6794 == (SEC_LOAD | SEC_CODE | SEC_HAS_CONTENTS))
6795 only_data_sections = FALSE;
6796
6797 null_input_bfd = FALSE;
6798 break;
6799 }
6800
6801 if (null_input_bfd || only_data_sections)
6802 return TRUE;
6803 }
6804
6805 return flags_compatible;
6806}
6807
6808/* Display the flags field. */
6809
6810static bfd_boolean
cec5225b 6811elfNN_aarch64_print_private_bfd_data (bfd *abfd, void *ptr)
a06ea964
NC		 6812{
6813 FILE *file = (FILE *) ptr;
6814 unsigned long flags;
6815
6816 BFD_ASSERT (abfd != NULL && ptr != NULL);
6817
6818 /* Print normal ELF private data. */
6819 _bfd_elf_print_private_bfd_data (abfd, ptr);
6820
6821 flags = elf_elfheader (abfd)->e_flags;
6822 /* Ignore init flag - it may not be set, despite the flags field
6823 containing valid data. */
6824
6825 /* xgettext:c-format */
6826 fprintf (file, _("private flags = %lx:"), elf_elfheader (abfd)->e_flags);
6827
6828 if (flags)
6829 fprintf (file, _("<Unrecognised flag bits set>"));
6830
6831 fputc ('\n', file);
6832
6833 return TRUE;
6834}
6835
63c1f59d
AM		 6836/* Find dynamic relocs for H that apply to read-only sections. */
6837
6838static asection *
6839readonly_dynrelocs (struct elf_link_hash_entry *h)
6840{
6841 struct elf_dyn_relocs *p;
6842
6843 for (p = elf_aarch64_hash_entry (h)->dyn_relocs; p != NULL; p = p->next)
6844 {
6845 asection *s = p->sec->output_section;
6846
6847 if (s != NULL && (s->flags & SEC_READONLY) != 0)
6848 return p->sec;
6849 }
6850 return NULL;
6851}
6852
6353d82b
JW		 6853/* Return true if we need copy relocation against EH. */
6854
6855static bfd_boolean
6856need_copy_relocation_p (struct elf_aarch64_link_hash_entry *eh)
6857{
6858 struct elf_dyn_relocs *p;
6859 asection *s;
6860
6861 for (p = eh->dyn_relocs; p != NULL; p = p->next)
6862 {
6863 /* If there is any pc-relative reference, we need to keep copy relocation
6864 to avoid propagating the relocation into runtime that current glibc
6865 does not support. */
6866 if (p->pc_count)
6867 return TRUE;
6868
6869 s = p->sec->output_section;
6870 /* Need copy relocation if it's against read-only section. */
6871 if (s != NULL && (s->flags & SEC_READONLY) != 0)
6872 return TRUE;
6873 }
6874
6875 return FALSE;
6876}
6877
a06ea964
NC		 6878/* Adjust a symbol defined by a dynamic object and referenced by a
6879 regular object. The current definition is in some section of the
6880 dynamic object, but we're not including those sections. We have to
6881 change the definition to something the rest of the link can
6882 understand. */
6883
6884static bfd_boolean
cec5225b 6885elfNN_aarch64_adjust_dynamic_symbol (struct bfd_link_info *info,
a06ea964
NC		 6886 struct elf_link_hash_entry *h)
6887{
cec5225b 6888 struct elf_aarch64_link_hash_table *htab;
5474d94f 6889 asection *s, *srel;
a06ea964
NC		 6890
6891 /* If this is a function, put it in the procedure linkage table. We
6892 will fill in the contents of the procedure linkage table later,
6893 when we know the address of the .got section. */
1419bbe5 6894 if (h->type == STT_FUNC || h->type == STT_GNU_IFUNC || h->needs_plt)
a06ea964
NC		 6895 {
6896 if (h->plt.refcount <= 0
1419bbe5
WN		 6897 || (h->type != STT_GNU_IFUNC
6898 && (SYMBOL_CALLS_LOCAL (info, h)
6899 || (ELF_ST_VISIBILITY (h->other) != STV_DEFAULT
6900 && h->root.type == bfd_link_hash_undefweak))))
a06ea964
NC		 6901 {
6902 /* This case can occur if we saw a CALL26 reloc in
6903 an input file, but the symbol wasn't referred to
6904 by a dynamic object or all references were
6905 garbage collected. In which case we can end up
6906 resolving. */
6907 h->plt.offset = (bfd_vma) - 1;
6908 h->needs_plt = 0;
6909 }
6910
6911 return TRUE;
6912 }
6913 else
80de0c6d 6914 /* Otherwise, reset to -1. */
a06ea964
NC		 6915 h->plt.offset = (bfd_vma) - 1;
6916
6917
6918 /* If this is a weak symbol, and there is a real definition, the
6919 processor independent code will have arranged for us to see the
6920 real definition first, and we can just use the same value. */
60d67dc8 6921 if (h->is_weakalias)
a06ea964 6922 {
60d67dc8
AM		 6923 struct elf_link_hash_entry *def = weakdef (h);
6924 BFD_ASSERT (def->root.type == bfd_link_hash_defined);
6925 h->root.u.def.section = def->root.u.def.section;
6926 h->root.u.def.value = def->root.u.def.value;
a06ea964 6927 if (ELIMINATE_COPY_RELOCS || info->nocopyreloc)
60d67dc8 6928 h->non_got_ref = def->non_got_ref;
a06ea964
NC		 6929 return TRUE;
6930 }
6931
6932 /* If we are creating a shared library, we must presume that the
6933 only references to the symbol are via the global offset table.
6934 For such cases we need not do anything here; the relocations will
6935 be handled correctly by relocate_section. */
0e1862bb 6936 if (bfd_link_pic (info))
a06ea964
NC		 6937 return TRUE;
6938
6939 /* If there are no references to this symbol that do not use the
6940 GOT, we don't need to generate a copy reloc. */
6941 if (!h->non_got_ref)
6942 return TRUE;
6943
6944 /* If -z nocopyreloc was given, we won't generate them either. */
6945 if (info->nocopyreloc)
6946 {
6947 h->non_got_ref = 0;
6948 return TRUE;
6949 }
6950
6353d82b
JW		 6951 if (ELIMINATE_COPY_RELOCS)
6952 {
6953 struct elf_aarch64_link_hash_entry *eh;
dce2246a 6954 /* If we don't find any dynamic relocs in read-only sections, then
6353d82b
JW		 6955 we'll be keeping the dynamic relocs and avoiding the copy reloc. */
6956 eh = (struct elf_aarch64_link_hash_entry *) h;
6957 if (!need_copy_relocation_p (eh))
6958 {
6959 h->non_got_ref = 0;
6960 return TRUE;
6961 }
6962 }
6963
a06ea964
NC		 6964 /* We must allocate the symbol in our .dynbss section, which will
6965 become part of the .bss section of the executable. There will be
6966 an entry for this symbol in the .dynsym section. The dynamic
6967 object will contain position independent code, so all references
6968 from the dynamic object to this symbol will go through the global
6969 offset table. The dynamic linker will use the .dynsym entry to
6970 determine the address it must put in the global offset table, so
6971 both the dynamic object and the regular object will refer to the
6972 same memory location for the variable. */
6973
cec5225b 6974 htab = elf_aarch64_hash_table (info);
a06ea964
NC		 6975
6976 /* We must generate a R_AARCH64_COPY reloc to tell the dynamic linker
6977 to copy the initial value out of the dynamic object and into the
6978 runtime process image. */
5474d94f
AM		 6979 if ((h->root.u.def.section->flags & SEC_READONLY) != 0)
6980 {
6981 s = htab->root.sdynrelro;
6982 srel = htab->root.sreldynrelro;
6983 }
6984 else
6985 {
6986 s = htab->root.sdynbss;
6987 srel = htab->root.srelbss;
6988 }
a06ea964
NC		 6989 if ((h->root.u.def.section->flags & SEC_ALLOC) != 0 && h->size != 0)
6990 {
5474d94f 6991 srel->size += RELOC_SIZE (htab);
a06ea964
NC		 6992 h->needs_copy = 1;
6993 }
6994
6cabe1ea 6995 return _bfd_elf_adjust_dynamic_copy (info, h, s);
a06ea964
NC		 6996
6997}
6998
6999static bfd_boolean
cec5225b 7000elfNN_aarch64_allocate_local_symbols (bfd *abfd, unsigned number)
a06ea964
NC		 7001{
7002 struct elf_aarch64_local_symbol *locals;
cec5225b 7003 locals = elf_aarch64_locals (abfd);
a06ea964
NC		 7004 if (locals == NULL)
7005 {
7006 locals = (struct elf_aarch64_local_symbol *)
7007 bfd_zalloc (abfd, number * sizeof (struct elf_aarch64_local_symbol));
7008 if (locals == NULL)
7009 return FALSE;
cec5225b 7010 elf_aarch64_locals (abfd) = locals;
a06ea964
NC		 7011 }
7012 return TRUE;
7013}
7014
cc0efaa8
MS		 7015/* Create the .got section to hold the global offset table. */
7016
7017static bfd_boolean
7018aarch64_elf_create_got_section (bfd *abfd, struct bfd_link_info *info)
7019{
7020 const struct elf_backend_data *bed = get_elf_backend_data (abfd);
7021 flagword flags;
7022 asection *s;
7023 struct elf_link_hash_entry *h;
7024 struct elf_link_hash_table *htab = elf_hash_table (info);
7025
7026 /* This function may be called more than once. */
ce558b89 7027 if (htab->sgot != NULL)
cc0efaa8
MS		 7028 return TRUE;
7029
7030 flags = bed->dynamic_sec_flags;
7031
7032 s = bfd_make_section_anyway_with_flags (abfd,
7033 (bed->rela_plts_and_copies_p
7034 ? ".rela.got" : ".rel.got"),
7035 (bed->dynamic_sec_flags
7036 | SEC_READONLY));
7037 if (s == NULL
7038 || ! bfd_set_section_alignment (abfd, s, bed->s->log_file_align))
7039 return FALSE;
7040 htab->srelgot = s;
7041
7042 s = bfd_make_section_anyway_with_flags (abfd, ".got", flags);
7043 if (s == NULL
7044 || !bfd_set_section_alignment (abfd, s, bed->s->log_file_align))
7045 return FALSE;
7046 htab->sgot = s;
7047 htab->sgot->size += GOT_ENTRY_SIZE;
7048
7049 if (bed->want_got_sym)
7050 {
7051 /* Define the symbol _GLOBAL_OFFSET_TABLE_ at the start of the .got
7052 (or .got.plt) section. We don't do this in the linker script
7053 because we don't want to define the symbol if we are not creating
7054 a global offset table. */
7055 h = _bfd_elf_define_linkage_sym (abfd, info, s,
7056 "_GLOBAL_OFFSET_TABLE_");
7057 elf_hash_table (info)->hgot = h;
7058 if (h == NULL)
7059 return FALSE;
7060 }
7061
7062 if (bed->want_got_plt)
7063 {
7064 s = bfd_make_section_anyway_with_flags (abfd, ".got.plt", flags);
7065 if (s == NULL
7066 || !bfd_set_section_alignment (abfd, s,
7067 bed->s->log_file_align))
7068 return FALSE;
7069 htab->sgotplt = s;
7070 }
7071
7072 /* The first bit of the global offset table is the header. */
7073 s->size += bed->got_header_size;
7074
7075 return TRUE;
7076}
7077
a06ea964
NC		 7078/* Look through the relocs for a section during the first phase. */
7079
7080static bfd_boolean
cec5225b 7081elfNN_aarch64_check_relocs (bfd *abfd, struct bfd_link_info *info,
a06ea964
NC		 7082 asection *sec, const Elf_Internal_Rela *relocs)
7083{
7084 Elf_Internal_Shdr *symtab_hdr;
7085 struct elf_link_hash_entry **sym_hashes;
7086 const Elf_Internal_Rela *rel;
7087 const Elf_Internal_Rela *rel_end;
7088 asection *sreloc;
7089
cec5225b 7090 struct elf_aarch64_link_hash_table *htab;
a06ea964 7091
0e1862bb 7092 if (bfd_link_relocatable (info))
a06ea964
NC		 7093 return TRUE;
7094
7095 BFD_ASSERT (is_aarch64_elf (abfd));
7096
cec5225b 7097 htab = elf_aarch64_hash_table (info);
a06ea964
NC		 7098 sreloc = NULL;
7099
7100 symtab_hdr = &elf_symtab_hdr (abfd);
7101 sym_hashes = elf_sym_hashes (abfd);
a06ea964
NC		 7102
7103 rel_end = relocs + sec->reloc_count;
7104 for (rel = relocs; rel < rel_end; rel++)
7105 {
7106 struct elf_link_hash_entry *h;
d42c267e 7107 unsigned int r_symndx;
a06ea964 7108 unsigned int r_type;
a6bb11b2 7109 bfd_reloc_code_real_type bfd_r_type;
1419bbe5 7110 Elf_Internal_Sym *isym;
a06ea964 7111
cec5225b
YZ		 7112 r_symndx = ELFNN_R_SYM (rel->r_info);
7113 r_type = ELFNN_R_TYPE (rel->r_info);
a06ea964
NC		 7114
7115 if (r_symndx >= NUM_SHDR_ENTRIES (symtab_hdr))
7116 {
695344c0 7117 /* xgettext:c-format */
871b3ab2 7118 _bfd_error_handler (_("%pB: bad symbol index: %d"), abfd, r_symndx);
a06ea964
NC		 7119 return FALSE;
7120 }
7121
ed5acf27 7122 if (r_symndx < symtab_hdr->sh_info)
1419bbe5
WN		 7123 {
7124 /* A local symbol. */
7125 isym = bfd_sym_from_r_symndx (&htab->sym_cache,
7126 abfd, r_symndx);
7127 if (isym == NULL)
7128 return FALSE;
7129
7130 /* Check relocation against local STT_GNU_IFUNC symbol. */
7131 if (ELF_ST_TYPE (isym->st_info) == STT_GNU_IFUNC)
7132 {
7133 h = elfNN_aarch64_get_local_sym_hash (htab, abfd, rel,
7134 TRUE);
7135 if (h == NULL)
7136 return FALSE;
7137
7138 /* Fake a STT_GNU_IFUNC symbol. */
7139 h->type = STT_GNU_IFUNC;
7140 h->def_regular = 1;
7141 h->ref_regular = 1;
7142 h->forced_local = 1;
7143 h->root.type = bfd_link_hash_defined;
7144 }
7145 else
7146 h = NULL;
7147 }
a06ea964
NC		 7148 else
7149 {
7150 h = sym_hashes[r_symndx - symtab_hdr->sh_info];
7151 while (h->root.type == bfd_link_hash_indirect
7152 || h->root.type == bfd_link_hash_warning)
7153 h = (struct elf_link_hash_entry *) h->root.u.i.link;
7154 }
7155
7156 /* Could be done earlier, if h were already available. */
a6bb11b2 7157 bfd_r_type = aarch64_tls_transition (abfd, info, r_type, h, r_symndx);
a06ea964 7158
1419bbe5
WN		 7159 if (h != NULL)
7160 {
18f822a0
JW		 7161 /* If a relocation refers to _GLOBAL_OFFSET_TABLE_, create the .got.
7162 This shows up in particular in an R_AARCH64_PREL64 in large model
7163 when calculating the pc-relative address to .got section which is
7164 used to initialize the gp register. */
7165 if (h->root.root.string
7166 && strcmp (h->root.root.string, "_GLOBAL_OFFSET_TABLE_") == 0)
7167 {
7168 if (htab->root.dynobj == NULL)
7169 htab->root.dynobj = abfd;
7170
7171 if (! aarch64_elf_create_got_section (htab->root.dynobj, info))
7172 return FALSE;
7173
7174 BFD_ASSERT (h == htab->root.hgot);
7175 }
7176
1419bbe5
WN		 7177 /* Create the ifunc sections for static executables. If we
7178 never see an indirect function symbol nor we are building
7179 a static executable, those sections will be empty and
7180 won't appear in output. */
7181 switch (bfd_r_type)
7182 {
7183 default:
7184 break;
7185
ce336788
JW		 7186 case BFD_RELOC_AARCH64_ADD_LO12:
7187 case BFD_RELOC_AARCH64_ADR_GOT_PAGE:
7188 case BFD_RELOC_AARCH64_ADR_HI21_PCREL:
1419bbe5 7189 case BFD_RELOC_AARCH64_CALL26:
ce336788 7190 case BFD_RELOC_AARCH64_GOT_LD_PREL19:
1419bbe5 7191 case BFD_RELOC_AARCH64_JUMP26:
7018c030 7192 case BFD_RELOC_AARCH64_LD32_GOTPAGE_LO14:
1419bbe5 7193 case BFD_RELOC_AARCH64_LD32_GOT_LO12_NC:
a2e1db00 7194 case BFD_RELOC_AARCH64_LD64_GOTOFF_LO15:
99ad26cb 7195 case BFD_RELOC_AARCH64_LD64_GOTPAGE_LO15:
1419bbe5 7196 case BFD_RELOC_AARCH64_LD64_GOT_LO12_NC:
dc8008f5 7197 case BFD_RELOC_AARCH64_MOVW_GOTOFF_G0_NC:
74a1bfe1 7198 case BFD_RELOC_AARCH64_MOVW_GOTOFF_G1:
ce336788 7199 case BFD_RELOC_AARCH64_NN:
1419bbe5
WN		 7200 if (htab->root.dynobj == NULL)
7201 htab->root.dynobj = abfd;
7202 if (!_bfd_elf_create_ifunc_sections (htab->root.dynobj, info))
7203 return FALSE;
7204 break;
7205 }
7206
2d0ca824 7207 /* It is referenced by a non-shared object. */
1419bbe5 7208 h->ref_regular = 1;
1419bbe5
WN		 7209 }
7210
a6bb11b2 7211 switch (bfd_r_type)
a06ea964 7212 {
79e74192
RL		 7213 case BFD_RELOC_AARCH64_16:
7214#if ARCH_SIZE == 64
7215 case BFD_RELOC_AARCH64_32:
7216#endif
279b2f94 7217 if (bfd_link_pic (info) && (sec->flags & SEC_ALLOC) != 0)
79e74192 7218 {
279b2f94
RL		 7219 if (h != NULL
7220 /* This is an absolute symbol. It represents a value instead
7221 of an address. */
7222 && ((h->root.type == bfd_link_hash_defined
7223 && bfd_is_abs_section (h->root.u.def.section))
7224 /* This is an undefined symbol. */
7225 || h->root.type == bfd_link_hash_undefined))
7226 break;
7227
7228 /* For local symbols, defined global symbols in a non-ABS section,
7229 it is assumed that the value is an address. */
79e74192
RL		 7230 int howto_index = bfd_r_type - BFD_RELOC_AARCH64_RELOC_START;
7231 _bfd_error_handler
7232 /* xgettext:c-format */
871b3ab2 7233 (_("%pB: relocation %s against `%s' can not be used when making "
79e74192
RL		 7234 "a shared object"),
7235 abfd, elfNN_aarch64_howto_table[howto_index].name,
7236 (h) ? h->root.root.string : "a local symbol");
7237 bfd_set_error (bfd_error_bad_value);
7238 return FALSE;
7239 }
7240 else
7241 break;
7242
6353d82b
JW		 7243 case BFD_RELOC_AARCH64_MOVW_G0_NC:
7244 case BFD_RELOC_AARCH64_MOVW_G1_NC:
7245 case BFD_RELOC_AARCH64_MOVW_G2_NC:
7246 case BFD_RELOC_AARCH64_MOVW_G3:
7247 if (bfd_link_pic (info))
7248 {
7249 int howto_index = bfd_r_type - BFD_RELOC_AARCH64_RELOC_START;
7250 _bfd_error_handler
7251 /* xgettext:c-format */
871b3ab2 7252 (_("%pB: relocation %s against `%s' can not be used when making "
6353d82b
JW		 7253 "a shared object; recompile with -fPIC"),
7254 abfd, elfNN_aarch64_howto_table[howto_index].name,
7255 (h) ? h->root.root.string : "a local symbol");
7256 bfd_set_error (bfd_error_bad_value);
7257 return FALSE;
7258 }
7259 /* Fall through. */
7260
7261 case BFD_RELOC_AARCH64_16_PCREL:
7262 case BFD_RELOC_AARCH64_32_PCREL:
7263 case BFD_RELOC_AARCH64_64_PCREL:
7264 case BFD_RELOC_AARCH64_ADD_LO12:
7265 case BFD_RELOC_AARCH64_ADR_HI21_NC_PCREL:
7266 case BFD_RELOC_AARCH64_ADR_HI21_PCREL:
7267 case BFD_RELOC_AARCH64_ADR_LO21_PCREL:
7268 case BFD_RELOC_AARCH64_LDST128_LO12:
7269 case BFD_RELOC_AARCH64_LDST16_LO12:
7270 case BFD_RELOC_AARCH64_LDST32_LO12:
7271 case BFD_RELOC_AARCH64_LDST64_LO12:
7272 case BFD_RELOC_AARCH64_LDST8_LO12:
7273 case BFD_RELOC_AARCH64_LD_LO19_PCREL:
7274 if (h == NULL || bfd_link_pic (info))
7275 break;
7276 /* Fall through. */
7277
a6bb11b2 7278 case BFD_RELOC_AARCH64_NN:
a06ea964
NC		 7279
7280 /* We don't need to handle relocs into sections not going into
7281 the "real" output. */
7282 if ((sec->flags & SEC_ALLOC) == 0)
7283 break;
7284
7285 if (h != NULL)
7286 {
0e1862bb 7287 if (!bfd_link_pic (info))
a06ea964
NC		 7288 h->non_got_ref = 1;
7289
7290 h->plt.refcount += 1;
7291 h->pointer_equality_needed = 1;
7292 }
7293
7294 /* No need to do anything if we're not creating a shared
7295 object. */
6353d82b
JW		 7296 if (!(bfd_link_pic (info)
7297 /* If on the other hand, we are creating an executable, we
7298 may need to keep relocations for symbols satisfied by a
7299 dynamic library if we manage to avoid copy relocs for the
7300 symbol.
7301
7302 NOTE: Currently, there is no support of copy relocs
7303 elimination on pc-relative relocation types, because there is
7304 no dynamic relocation support for them in glibc. We still
7305 record the dynamic symbol reference for them. This is
7306 because one symbol may be referenced by both absolute
7307 relocation (for example, BFD_RELOC_AARCH64_NN) and
7308 pc-relative relocation. We need full symbol reference
7309 information to make correct decision later in
7310 elfNN_aarch64_adjust_dynamic_symbol. */
7311 || (ELIMINATE_COPY_RELOCS
7312 && !bfd_link_pic (info)
7313 && h != NULL
7314 && (h->root.type == bfd_link_hash_defweak
7315 || !h->def_regular))))
a06ea964
NC		 7316 break;
7317
7318 {
7319 struct elf_dyn_relocs *p;
7320 struct elf_dyn_relocs **head;
6353d82b 7321 int howto_index = bfd_r_type - BFD_RELOC_AARCH64_RELOC_START;
a06ea964
NC		 7322
7323 /* We must copy these reloc types into the output file.
7324 Create a reloc section in dynobj and make room for
7325 this reloc. */
7326 if (sreloc == NULL)
7327 {
7328 if (htab->root.dynobj == NULL)
7329 htab->root.dynobj = abfd;
7330
7331 sreloc = _bfd_elf_make_dynamic_reloc_section
0608afa7 7332 (sec, htab->root.dynobj, LOG_FILE_ALIGN, abfd, /*rela? */ TRUE);
a06ea964
NC		 7333
7334 if (sreloc == NULL)
7335 return FALSE;
7336 }
7337
7338 /* If this is a global symbol, we count the number of
7339 relocations we need for this symbol. */
7340 if (h != NULL)
7341 {
cec5225b
YZ		 7342 struct elf_aarch64_link_hash_entry *eh;
7343 eh = (struct elf_aarch64_link_hash_entry *) h;
a06ea964
NC		 7344 head = &eh->dyn_relocs;
7345 }
7346 else
7347 {
7348 /* Track dynamic relocs needed for local syms too.
7349 We really need local syms available to do this
7350 easily. Oh well. */
7351
7352 asection *s;
7353 void **vpp;
a06ea964
NC		 7354
7355 isym = bfd_sym_from_r_symndx (&htab->sym_cache,
7356 abfd, r_symndx);
7357 if (isym == NULL)
7358 return FALSE;
7359
7360 s = bfd_section_from_elf_index (abfd, isym->st_shndx);
7361 if (s == NULL)
7362 s = sec;
7363
7364 /* Beware of type punned pointers vs strict aliasing
7365 rules. */
7366 vpp = &(elf_section_data (s)->local_dynrel);
7367 head = (struct elf_dyn_relocs **) vpp;
7368 }
7369
7370 p = *head;
7371 if (p == NULL || p->sec != sec)
7372 {
7373 bfd_size_type amt = sizeof *p;
7374 p = ((struct elf_dyn_relocs *)
7375 bfd_zalloc (htab->root.dynobj, amt));
7376 if (p == NULL)
7377 return FALSE;
7378 p->next = *head;
7379 *head = p;
7380 p->sec = sec;
7381 }
7382
7383 p->count += 1;
7384
6353d82b
JW		 7385 if (elfNN_aarch64_howto_table[howto_index].pc_relative)
7386 p->pc_count += 1;
a06ea964
NC		 7387 }
7388 break;
7389
7390 /* RR: We probably want to keep a consistency check that
7391 there are no dangling GOT_PAGE relocs. */
a6bb11b2 7392 case BFD_RELOC_AARCH64_ADR_GOT_PAGE:
7bcccb57 7393 case BFD_RELOC_AARCH64_GOT_LD_PREL19:
7018c030 7394 case BFD_RELOC_AARCH64_LD32_GOTPAGE_LO14:
7bcccb57 7395 case BFD_RELOC_AARCH64_LD32_GOT_LO12_NC:
a2e1db00 7396 case BFD_RELOC_AARCH64_LD64_GOTOFF_LO15:
99ad26cb 7397 case BFD_RELOC_AARCH64_LD64_GOTPAGE_LO15:
7bcccb57 7398 case BFD_RELOC_AARCH64_LD64_GOT_LO12_NC:
dc8008f5 7399 case BFD_RELOC_AARCH64_MOVW_GOTOFF_G0_NC:
74a1bfe1 7400 case BFD_RELOC_AARCH64_MOVW_GOTOFF_G1:
f955cccf 7401 case BFD_RELOC_AARCH64_TLSDESC_ADD_LO12:
7bcccb57 7402 case BFD_RELOC_AARCH64_TLSDESC_ADR_PAGE21:
389b8029 7403 case BFD_RELOC_AARCH64_TLSDESC_ADR_PREL21:
7bcccb57 7404 case BFD_RELOC_AARCH64_TLSDESC_LD32_LO12_NC:
f955cccf 7405 case BFD_RELOC_AARCH64_TLSDESC_LD64_LO12:
1ada945d 7406 case BFD_RELOC_AARCH64_TLSDESC_LD_PREL19:
0484b454
RL		 7407 case BFD_RELOC_AARCH64_TLSDESC_OFF_G0_NC:
7408 case BFD_RELOC_AARCH64_TLSDESC_OFF_G1:
a6bb11b2 7409 case BFD_RELOC_AARCH64_TLSGD_ADD_LO12_NC:
7bcccb57 7410 case BFD_RELOC_AARCH64_TLSGD_ADR_PAGE21:
3c12b054 7411 case BFD_RELOC_AARCH64_TLSGD_ADR_PREL21:
7ba7cfe4 7412 case BFD_RELOC_AARCH64_TLSGD_MOVW_G0_NC:
94facae3 7413 case BFD_RELOC_AARCH64_TLSGD_MOVW_G1:
a6bb11b2 7414 case BFD_RELOC_AARCH64_TLSIE_ADR_GOTTPREL_PAGE21:
a6bb11b2 7415 case BFD_RELOC_AARCH64_TLSIE_LD32_GOTTPREL_LO12_NC:
7bcccb57 7416 case BFD_RELOC_AARCH64_TLSIE_LD64_GOTTPREL_LO12_NC:
043bf05a 7417 case BFD_RELOC_AARCH64_TLSIE_LD_GOTTPREL_PREL19:
3b957e5b
RL		 7418 case BFD_RELOC_AARCH64_TLSIE_MOVW_GOTTPREL_G0_NC:
7419 case BFD_RELOC_AARCH64_TLSIE_MOVW_GOTTPREL_G1:
73f925cc 7420 case BFD_RELOC_AARCH64_TLSLD_ADD_LO12_NC:
f69e4920 7421 case BFD_RELOC_AARCH64_TLSLD_ADR_PAGE21:
77a69ff8 7422 case BFD_RELOC_AARCH64_TLSLD_ADR_PREL21:
b7a944fe
RL		 7423 case BFD_RELOC_AARCH64_TLSLE_MOVW_TPREL_G1:
7424 case BFD_RELOC_AARCH64_TLSLE_MOVW_TPREL_G1_NC:
7425 case BFD_RELOC_AARCH64_TLSLE_MOVW_TPREL_G2:
a06ea964
NC		 7426 {
7427 unsigned got_type;
7428 unsigned old_got_type;
7429
a6bb11b2 7430 got_type = aarch64_reloc_got_type (bfd_r_type);
a06ea964
NC		 7431
7432 if (h)
7433 {
7434 h->got.refcount += 1;
cec5225b 7435 old_got_type = elf_aarch64_hash_entry (h)->got_type;
a06ea964
NC		 7436 }
7437 else
7438 {
7439 struct elf_aarch64_local_symbol *locals;
7440
cec5225b 7441 if (!elfNN_aarch64_allocate_local_symbols
a06ea964
NC		 7442 (abfd, symtab_hdr->sh_info))
7443 return FALSE;
7444
cec5225b 7445 locals = elf_aarch64_locals (abfd);
a06ea964
NC		 7446 BFD_ASSERT (r_symndx < symtab_hdr->sh_info);
7447 locals[r_symndx].got_refcount += 1;
7448 old_got_type = locals[r_symndx].got_type;
7449 }
7450
7451 /* If a variable is accessed with both general dynamic TLS
7452 methods, two slots may be created. */
7453 if (GOT_TLS_GD_ANY_P (old_got_type) && GOT_TLS_GD_ANY_P (got_type))
7454 got_type |= old_got_type;
7455
7456 /* We will already have issued an error message if there
7457 is a TLS/non-TLS mismatch, based on the symbol type.
7458 So just combine any TLS types needed. */
7459 if (old_got_type != GOT_UNKNOWN && old_got_type != GOT_NORMAL
7460 && got_type != GOT_NORMAL)
7461 got_type |= old_got_type;
7462
7463 /* If the symbol is accessed by both IE and GD methods, we
7464 are able to relax. Turn off the GD flag, without
7465 messing up with any other kind of TLS types that may be
7466 involved. */
7467 if ((got_type & GOT_TLS_IE) && GOT_TLS_GD_ANY_P (got_type))
7468 got_type &= ~ (GOT_TLSDESC_GD | GOT_TLS_GD);
7469
7470 if (old_got_type != got_type)
7471 {
7472 if (h != NULL)
cec5225b 7473 elf_aarch64_hash_entry (h)->got_type = got_type;
a06ea964
NC		 7474 else
7475 {
7476 struct elf_aarch64_local_symbol *locals;
cec5225b 7477 locals = elf_aarch64_locals (abfd);
a06ea964
NC		 7478 BFD_ASSERT (r_symndx < symtab_hdr->sh_info);
7479 locals[r_symndx].got_type = got_type;
7480 }
7481 }
7482
cc0efaa8
MS		 7483 if (htab->root.dynobj == NULL)
7484 htab->root.dynobj = abfd;
7485 if (! aarch64_elf_create_got_section (htab->root.dynobj, info))
7486 return FALSE;
a06ea964
NC		 7487 break;
7488 }
7489
a6bb11b2
YZ		 7490 case BFD_RELOC_AARCH64_CALL26:
7491 case BFD_RELOC_AARCH64_JUMP26:
a06ea964
NC		 7492 /* If this is a local symbol then we resolve it
7493 directly without creating a PLT entry. */
7494 if (h == NULL)
7495 continue;
7496
7497 h->needs_plt = 1;
1419bbe5
WN		 7498 if (h->plt.refcount <= 0)
7499 h->plt.refcount = 1;
7500 else
7501 h->plt.refcount += 1;
a06ea964 7502 break;
a6bb11b2
YZ		 7503
7504 default:
7505 break;
a06ea964
NC		 7506 }
7507 }
a6bb11b2 7508
a06ea964
NC		 7509 return TRUE;
7510}
7511
7512/* Treat mapping symbols as special target symbols. */
7513
7514static bfd_boolean
cec5225b 7515elfNN_aarch64_is_target_special_symbol (bfd *abfd ATTRIBUTE_UNUSED,
a06ea964
NC		 7516 asymbol *sym)
7517{
7518 return bfd_is_aarch64_special_symbol_name (sym->name,
7519 BFD_AARCH64_SPECIAL_SYM_TYPE_ANY);
7520}
7521
7522/* This is a copy of elf_find_function () from elf.c except that
7523 AArch64 mapping symbols are ignored when looking for function names. */
7524
7525static bfd_boolean
7526aarch64_elf_find_function (bfd *abfd ATTRIBUTE_UNUSED,
a06ea964 7527 asymbol **symbols,
fb167eb2 7528 asection *section,
a06ea964
NC		 7529 bfd_vma offset,
7530 const char **filename_ptr,
7531 const char **functionname_ptr)
7532{
7533 const char *filename = NULL;
7534 asymbol *func = NULL;
7535 bfd_vma low_func = 0;
7536 asymbol **p;
7537
7538 for (p = symbols; *p != NULL; p++)
7539 {
7540 elf_symbol_type *q;
7541
7542 q = (elf_symbol_type *) * p;
7543
7544 switch (ELF_ST_TYPE (q->internal_elf_sym.st_info))
7545 {
7546 default:
7547 break;
7548 case STT_FILE:
7549 filename = bfd_asymbol_name (&q->symbol);
7550 break;
7551 case STT_FUNC:
7552 case STT_NOTYPE:
7553 /* Skip mapping symbols. */
7554 if ((q->symbol.flags & BSF_LOCAL)
7555 && (bfd_is_aarch64_special_symbol_name
7556 (q->symbol.name, BFD_AARCH64_SPECIAL_SYM_TYPE_ANY)))
7557 continue;
7558 /* Fall through. */
7559 if (bfd_get_section (&q->symbol) == section
7560 && q->symbol.value >= low_func && q->symbol.value <= offset)
7561 {
7562 func = (asymbol *) q;
7563 low_func = q->symbol.value;
7564 }
7565 break;
7566 }
7567 }
7568
7569 if (func == NULL)
7570 return FALSE;
7571
7572 if (filename_ptr)
7573 *filename_ptr = filename;
7574 if (functionname_ptr)
7575 *functionname_ptr = bfd_asymbol_name (func);
7576
7577 return TRUE;
7578}
7579
7580
7581/* Find the nearest line to a particular section and offset, for error
7582 reporting. This code is a duplicate of the code in elf.c, except
7583 that it uses aarch64_elf_find_function. */
7584
7585static bfd_boolean
cec5225b 7586elfNN_aarch64_find_nearest_line (bfd *abfd,
a06ea964 7587 asymbol **symbols,
fb167eb2 7588 asection *section,
a06ea964
NC		 7589 bfd_vma offset,
7590 const char **filename_ptr,
7591 const char **functionname_ptr,
fb167eb2
AM		 7592 unsigned int *line_ptr,
7593 unsigned int *discriminator_ptr)
a06ea964
NC		 7594{
7595 bfd_boolean found = FALSE;
7596
fb167eb2 7597 if (_bfd_dwarf2_find_nearest_line (abfd, symbols, NULL, section, offset,
a06ea964 7598 filename_ptr, functionname_ptr,
fb167eb2
AM		 7599 line_ptr, discriminator_ptr,
7600 dwarf_debug_sections, 0,
a06ea964
NC		 7601 &elf_tdata (abfd)->dwarf2_find_line_info))
7602 {
7603 if (!*functionname_ptr)
fb167eb2 7604 aarch64_elf_find_function (abfd, symbols, section, offset,
a06ea964
NC		 7605 *filename_ptr ? NULL : filename_ptr,
7606 functionname_ptr);
7607
7608 return TRUE;
7609 }
7610
fb167eb2
AM		 7611 /* Skip _bfd_dwarf1_find_nearest_line since no known AArch64
7612 toolchain uses DWARF1. */
7613
a06ea964
NC		 7614 if (!_bfd_stab_section_find_nearest_line (abfd, symbols, section, offset,
7615 &found, filename_ptr,
7616 functionname_ptr, line_ptr,
7617 &elf_tdata (abfd)->line_info))
7618 return FALSE;
7619
7620 if (found && (*functionname_ptr || *line_ptr))
7621 return TRUE;
7622
7623 if (symbols == NULL)
7624 return FALSE;
7625
fb167eb2 7626 if (!aarch64_elf_find_function (abfd, symbols, section, offset,
a06ea964
NC		 7627 filename_ptr, functionname_ptr))
7628 return FALSE;
7629
7630 *line_ptr = 0;
7631 return TRUE;
7632}
7633
7634static bfd_boolean
cec5225b 7635elfNN_aarch64_find_inliner_info (bfd *abfd,
a06ea964
NC		 7636 const char **filename_ptr,
7637 const char **functionname_ptr,
7638 unsigned int *line_ptr)
7639{
7640 bfd_boolean found;
7641 found = _bfd_dwarf2_find_inliner_info
7642 (abfd, filename_ptr,
7643 functionname_ptr, line_ptr, &elf_tdata (abfd)->dwarf2_find_line_info);
7644 return found;
7645}
7646
7647
7648static void
cec5225b 7649elfNN_aarch64_post_process_headers (bfd *abfd,
1419bbe5 7650 struct bfd_link_info *link_info)
a06ea964
NC		 7651{
7652 Elf_Internal_Ehdr *i_ehdrp; /* ELF file header, internal form. */
7653
7654 i_ehdrp = elf_elfheader (abfd);
a06ea964 7655 i_ehdrp->e_ident[EI_ABIVERSION] = AARCH64_ELF_ABI_VERSION;
1419bbe5 7656
78245035 7657 _bfd_elf_post_process_headers (abfd, link_info);
a06ea964
NC		 7658}
7659
7660static enum elf_reloc_type_class
cec5225b 7661elfNN_aarch64_reloc_type_class (const struct bfd_link_info *info ATTRIBUTE_UNUSED,
7e612e98
AM		 7662 const asection *rel_sec ATTRIBUTE_UNUSED,
7663 const Elf_Internal_Rela *rela)
a06ea964 7664{
f2e6a843
SN		 7665 struct elf_aarch64_link_hash_table *htab = elf_aarch64_hash_table (info);
7666
7667 if (htab->root.dynsym != NULL
7668 && htab->root.dynsym->contents != NULL)
7669 {
7670 /* Check relocation against STT_GNU_IFUNC symbol if there are
7671 dynamic symbols. */
7672 bfd *abfd = info->output_bfd;
7673 const struct elf_backend_data *bed = get_elf_backend_data (abfd);
7674 unsigned long r_symndx = ELFNN_R_SYM (rela->r_info);
7675 if (r_symndx != STN_UNDEF)
7676 {
7677 Elf_Internal_Sym sym;
7678 if (!bed->s->swap_symbol_in (abfd,
7679 (htab->root.dynsym->contents
7680 + r_symndx * bed->s->sizeof_sym),
7681 0, &sym))
7682 {
7683 /* xgettext:c-format */
871b3ab2 7684 _bfd_error_handler (_("%pB symbol number %lu references"
f2e6a843
SN		 7685 " nonexistent SHT_SYMTAB_SHNDX section"),
7686 abfd, r_symndx);
7687 /* Ideally an error class should be returned here. */
7688 }
7689 else if (ELF_ST_TYPE (sym.st_info) == STT_GNU_IFUNC)
7690 return reloc_class_ifunc;
7691 }
7692 }
7693
cec5225b 7694 switch ((int) ELFNN_R_TYPE (rela->r_info))
a06ea964 7695 {
f2e6a843
SN		 7696 case AARCH64_R (IRELATIVE):
7697 return reloc_class_ifunc;
a6bb11b2 7698 case AARCH64_R (RELATIVE):
a06ea964 7699 return reloc_class_relative;
a6bb11b2 7700 case AARCH64_R (JUMP_SLOT):
a06ea964 7701 return reloc_class_plt;
a6bb11b2 7702 case AARCH64_R (COPY):
a06ea964
NC		 7703 return reloc_class_copy;
7704 default:
7705 return reloc_class_normal;
7706 }
7707}
7708
a06ea964
NC		 7709/* Handle an AArch64 specific section when reading an object file. This is
7710 called when bfd_section_from_shdr finds a section with an unknown
7711 type. */
7712
7713static bfd_boolean
cec5225b 7714elfNN_aarch64_section_from_shdr (bfd *abfd,
a06ea964
NC		 7715 Elf_Internal_Shdr *hdr,
7716 const char *name, int shindex)
7717{
7718 /* There ought to be a place to keep ELF backend specific flags, but
7719 at the moment there isn't one. We just keep track of the
7720 sections by their name, instead. Fortunately, the ABI gives
7721 names for all the AArch64 specific sections, so we will probably get
7722 away with this. */
7723 switch (hdr->sh_type)
7724 {
7725 case SHT_AARCH64_ATTRIBUTES:
7726 break;
7727
7728 default:
7729 return FALSE;
7730 }
7731
7732 if (!_bfd_elf_make_section_from_shdr (abfd, hdr, name, shindex))
7733 return FALSE;
7734
7735 return TRUE;
7736}
7737
7738/* A structure used to record a list of sections, independently
7739 of the next and prev fields in the asection structure. */
7740typedef struct section_list
7741{
7742 asection *sec;
7743 struct section_list *next;
7744 struct section_list *prev;
7745}
7746section_list;
7747
7748/* Unfortunately we need to keep a list of sections for which
7749 an _aarch64_elf_section_data structure has been allocated. This
cec5225b 7750 is because it is possible for functions like elfNN_aarch64_write_section
a06ea964
NC		 7751 to be called on a section which has had an elf_data_structure
7752 allocated for it (and so the used_by_bfd field is valid) but
7753 for which the AArch64 extended version of this structure - the
7754 _aarch64_elf_section_data structure - has not been allocated. */
7755static section_list *sections_with_aarch64_elf_section_data = NULL;
7756
7757static void
7758record_section_with_aarch64_elf_section_data (asection *sec)
7759{
7760 struct section_list *entry;
7761
7762 entry = bfd_malloc (sizeof (*entry));
7763 if (entry == NULL)
7764 return;
7765 entry->sec = sec;
7766 entry->next = sections_with_aarch64_elf_section_data;
7767 entry->prev = NULL;
7768 if (entry->next != NULL)
7769 entry->next->prev = entry;
7770 sections_with_aarch64_elf_section_data = entry;
7771}
7772
7773static struct section_list *
7774find_aarch64_elf_section_entry (asection *sec)
7775{
7776 struct section_list *entry;
7777 static struct section_list *last_entry = NULL;
7778
7779 /* This is a short cut for the typical case where the sections are added
7780 to the sections_with_aarch64_elf_section_data list in forward order and
7781 then looked up here in backwards order. This makes a real difference
7782 to the ld-srec/sec64k.exp linker test. */
7783 entry = sections_with_aarch64_elf_section_data;
7784 if (last_entry != NULL)
7785 {
7786 if (last_entry->sec == sec)
7787 entry = last_entry;
7788 else if (last_entry->next != NULL && last_entry->next->sec == sec)
7789 entry = last_entry->next;
7790 }
7791
7792 for (; entry; entry = entry->next)
7793 if (entry->sec == sec)
7794 break;
7795
7796 if (entry)
7797 /* Record the entry prior to this one - it is the entry we are
7798 most likely to want to locate next time. Also this way if we
7799 have been called from
7800 unrecord_section_with_aarch64_elf_section_data () we will not
7801 be caching a pointer that is about to be freed. */
7802 last_entry = entry->prev;
7803
7804 return entry;
7805}
7806
7807static void
7808unrecord_section_with_aarch64_elf_section_data (asection *sec)
7809{
7810 struct section_list *entry;
7811
7812 entry = find_aarch64_elf_section_entry (sec);
7813
7814 if (entry)
7815 {
7816 if (entry->prev != NULL)
7817 entry->prev->next = entry->next;
7818 if (entry->next != NULL)
7819 entry->next->prev = entry->prev;
7820 if (entry == sections_with_aarch64_elf_section_data)
7821 sections_with_aarch64_elf_section_data = entry->next;
7822 free (entry);
7823 }
7824}
7825
7826
7827typedef struct
7828{
7829 void *finfo;
7830 struct bfd_link_info *info;
7831 asection *sec;
7832 int sec_shndx;
7833 int (*func) (void *, const char *, Elf_Internal_Sym *,
7834 asection *, struct elf_link_hash_entry *);
7835} output_arch_syminfo;
7836
7837enum map_symbol_type
7838{
7839 AARCH64_MAP_INSN,
7840 AARCH64_MAP_DATA
7841};
7842
7843
7844/* Output a single mapping symbol. */
7845
7846static bfd_boolean
cec5225b 7847elfNN_aarch64_output_map_sym (output_arch_syminfo *osi,
a06ea964
NC		 7848 enum map_symbol_type type, bfd_vma offset)
7849{
7850 static const char *names[2] = { "$x", "$d" };
7851 Elf_Internal_Sym sym;
7852
7853 sym.st_value = (osi->sec->output_section->vma
7854 + osi->sec->output_offset + offset);
7855 sym.st_size = 0;
7856 sym.st_other = 0;
7857 sym.st_info = ELF_ST_INFO (STB_LOCAL, STT_NOTYPE);
7858 sym.st_shndx = osi->sec_shndx;
7859 return osi->func (osi->finfo, names[type], &sym, osi->sec, NULL) == 1;
7860}
7861
a06ea964
NC		 7862/* Output a single local symbol for a generated stub. */
7863
7864static bfd_boolean
cec5225b 7865elfNN_aarch64_output_stub_sym (output_arch_syminfo *osi, const char *name,
a06ea964
NC		 7866 bfd_vma offset, bfd_vma size)
7867{
7868 Elf_Internal_Sym sym;
7869
7870 sym.st_value = (osi->sec->output_section->vma
7871 + osi->sec->output_offset + offset);
7872 sym.st_size = size;
7873 sym.st_other = 0;
7874 sym.st_info = ELF_ST_INFO (STB_LOCAL, STT_FUNC);
7875 sym.st_shndx = osi->sec_shndx;
7876 return osi->func (osi->finfo, name, &sym, osi->sec, NULL) == 1;
7877}
7878
7879static bfd_boolean
7880aarch64_map_one_stub (struct bfd_hash_entry *gen_entry, void *in_arg)
7881{
cec5225b 7882 struct elf_aarch64_stub_hash_entry *stub_entry;
a06ea964
NC		 7883 asection *stub_sec;
7884 bfd_vma addr;
7885 char *stub_name;
7886 output_arch_syminfo *osi;
7887
7888 /* Massage our args to the form they really have. */
cec5225b 7889 stub_entry = (struct elf_aarch64_stub_hash_entry *) gen_entry;
a06ea964
NC		 7890 osi = (output_arch_syminfo *) in_arg;
7891
7892 stub_sec = stub_entry->stub_sec;
7893
7894 /* Ensure this stub is attached to the current section being
7895 processed. */
7896 if (stub_sec != osi->sec)
7897 return TRUE;
7898
7899 addr = (bfd_vma) stub_entry->stub_offset;
7900
7901 stub_name = stub_entry->output_name;
7902
7903 switch (stub_entry->stub_type)
7904 {
7905 case aarch64_stub_adrp_branch:
cec5225b 7906 if (!elfNN_aarch64_output_stub_sym (osi, stub_name, addr,
a06ea964
NC		 7907 sizeof (aarch64_adrp_branch_stub)))
7908 return FALSE;
cec5225b 7909 if (!elfNN_aarch64_output_map_sym (osi, AARCH64_MAP_INSN, addr))
a06ea964
NC		 7910 return FALSE;
7911 break;
7912 case aarch64_stub_long_branch:
cec5225b 7913 if (!elfNN_aarch64_output_stub_sym
a06ea964
NC		 7914 (osi, stub_name, addr, sizeof (aarch64_long_branch_stub)))
7915 return FALSE;
cec5225b 7916 if (!elfNN_aarch64_output_map_sym (osi, AARCH64_MAP_INSN, addr))
a06ea964 7917 return FALSE;
cec5225b 7918 if (!elfNN_aarch64_output_map_sym (osi, AARCH64_MAP_DATA, addr + 16))
a06ea964
NC		 7919 return FALSE;
7920 break;
68fcca92
JW		 7921 case aarch64_stub_erratum_835769_veneer:
7922 if (!elfNN_aarch64_output_stub_sym (osi, stub_name, addr,
7923 sizeof (aarch64_erratum_835769_stub)))
7924 return FALSE;
7925 if (!elfNN_aarch64_output_map_sym (osi, AARCH64_MAP_INSN, addr))
7926 return FALSE;
7927 break;
4106101c
MS		 7928 case aarch64_stub_erratum_843419_veneer:
7929 if (!elfNN_aarch64_output_stub_sym (osi, stub_name, addr,
7930 sizeof (aarch64_erratum_843419_stub)))
7931 return FALSE;
7932 if (!elfNN_aarch64_output_map_sym (osi, AARCH64_MAP_INSN, addr))
7933 return FALSE;
7934 break;
7935
a06ea964 7936 default:
8e2fe09f 7937 abort ();
a06ea964
NC		 7938 }
7939
7940 return TRUE;
7941}
7942
7943/* Output mapping symbols for linker generated sections. */
7944
7945static bfd_boolean
cec5225b 7946elfNN_aarch64_output_arch_local_syms (bfd *output_bfd,
a06ea964
NC		 7947 struct bfd_link_info *info,
7948 void *finfo,
7949 int (*func) (void *, const char *,
7950 Elf_Internal_Sym *,
7951 asection *,
7952 struct elf_link_hash_entry
7953 *))
7954{
7955 output_arch_syminfo osi;
cec5225b 7956 struct elf_aarch64_link_hash_table *htab;
a06ea964 7957
cec5225b 7958 htab = elf_aarch64_hash_table (info);
a06ea964
NC		 7959
7960 osi.finfo = finfo;
7961 osi.info = info;
7962 osi.func = func;
7963
7964 /* Long calls stubs. */
7965 if (htab->stub_bfd && htab->stub_bfd->sections)
7966 {
7967 asection *stub_sec;
7968
7969 for (stub_sec = htab->stub_bfd->sections;
7970 stub_sec != NULL; stub_sec = stub_sec->next)
7971 {
7972 /* Ignore non-stub sections. */
7973 if (!strstr (stub_sec->name, STUB_SUFFIX))
7974 continue;
7975
7976 osi.sec = stub_sec;
7977
7978 osi.sec_shndx = _bfd_elf_section_from_bfd_section
7979 (output_bfd, osi.sec->output_section);
7980
61865519
MS		 7981 /* The first instruction in a stub is always a branch. */
7982 if (!elfNN_aarch64_output_map_sym (&osi, AARCH64_MAP_INSN, 0))
7983 return FALSE;
7984
a06ea964
NC		 7985 bfd_hash_traverse (&htab->stub_hash_table, aarch64_map_one_stub,
7986 &osi);
7987 }
7988 }
7989
7990 /* Finally, output mapping symbols for the PLT. */
7991 if (!htab->root.splt || htab->root.splt->size == 0)
7992 return TRUE;
7993
a06ea964
NC		 7994 osi.sec_shndx = _bfd_elf_section_from_bfd_section
7995 (output_bfd, htab->root.splt->output_section);
7996 osi.sec = htab->root.splt;
7997
73524045 7998 elfNN_aarch64_output_map_sym (&osi, AARCH64_MAP_INSN, 0);
a06ea964
NC		 7999
8000 return TRUE;
8001
8002}
8003
8004/* Allocate target specific section data. */
8005
8006static bfd_boolean
cec5225b 8007elfNN_aarch64_new_section_hook (bfd *abfd, asection *sec)
a06ea964
NC		 8008{
8009 if (!sec->used_by_bfd)
8010 {
8011 _aarch64_elf_section_data *sdata;
8012 bfd_size_type amt = sizeof (*sdata);
8013
8014 sdata = bfd_zalloc (abfd, amt);
8015 if (sdata == NULL)
8016 return FALSE;
8017 sec->used_by_bfd = sdata;
8018 }
8019
8020 record_section_with_aarch64_elf_section_data (sec);
8021
8022 return _bfd_elf_new_section_hook (abfd, sec);
8023}
8024
8025
8026static void
8027unrecord_section_via_map_over_sections (bfd *abfd ATTRIBUTE_UNUSED,
8028 asection *sec,
8029 void *ignore ATTRIBUTE_UNUSED)
8030{
8031 unrecord_section_with_aarch64_elf_section_data (sec);
8032}
8033
8034static bfd_boolean
cec5225b 8035elfNN_aarch64_close_and_cleanup (bfd *abfd)
a06ea964
NC		 8036{
8037 if (abfd->sections)
8038 bfd_map_over_sections (abfd,
8039 unrecord_section_via_map_over_sections, NULL);
8040
8041 return _bfd_elf_close_and_cleanup (abfd);
8042}
8043
8044static bfd_boolean
cec5225b 8045elfNN_aarch64_bfd_free_cached_info (bfd *abfd)
a06ea964
NC		 8046{
8047 if (abfd->sections)
8048 bfd_map_over_sections (abfd,
8049 unrecord_section_via_map_over_sections, NULL);
8050
8051 return _bfd_free_cached_info (abfd);
8052}
8053
a06ea964
NC		 8054/* Create dynamic sections. This is different from the ARM backend in that
8055 the got, plt, gotplt and their relocation sections are all created in the
8056 standard part of the bfd elf backend. */
8057
8058static bfd_boolean
cec5225b 8059elfNN_aarch64_create_dynamic_sections (bfd *dynobj,
a06ea964
NC		 8060 struct bfd_link_info *info)
8061{
cc0efaa8
MS		 8062 /* We need to create .got section. */
8063 if (!aarch64_elf_create_got_section (dynobj, info))
8064 return FALSE;
a06ea964 8065
9d19e4fd 8066 return _bfd_elf_create_dynamic_sections (dynobj, info);
a06ea964
NC		 8067}
8068
8069
8070/* Allocate space in .plt, .got and associated reloc sections for
8071 dynamic relocs. */
8072
8073static bfd_boolean
cec5225b 8074elfNN_aarch64_allocate_dynrelocs (struct elf_link_hash_entry *h, void *inf)
a06ea964
NC		 8075{
8076 struct bfd_link_info *info;
cec5225b
YZ		 8077 struct elf_aarch64_link_hash_table *htab;
8078 struct elf_aarch64_link_hash_entry *eh;
a06ea964
NC		 8079 struct elf_dyn_relocs *p;
8080
8081 /* An example of a bfd_link_hash_indirect symbol is versioned
8082 symbol. For example: __gxx_personality_v0(bfd_link_hash_indirect)
8083 -> __gxx_personality_v0(bfd_link_hash_defined)
8084
8085 There is no need to process bfd_link_hash_indirect symbols here
8086 because we will also be presented with the concrete instance of
cec5225b 8087 the symbol and elfNN_aarch64_copy_indirect_symbol () will have been
a06ea964 8088 called to copy all relevant data from the generic to the concrete
2d0ca824 8089 symbol instance. */
a06ea964
NC		 8090 if (h->root.type == bfd_link_hash_indirect)
8091 return TRUE;
8092
8093 if (h->root.type == bfd_link_hash_warning)
8094 h = (struct elf_link_hash_entry *) h->root.u.i.link;
8095
8096 info = (struct bfd_link_info *) inf;
cec5225b 8097 htab = elf_aarch64_hash_table (info);
a06ea964 8098
1419bbe5
WN		 8099 /* Since STT_GNU_IFUNC symbol must go through PLT, we handle it
8100 here if it is defined and referenced in a non-shared object. */
8101 if (h->type == STT_GNU_IFUNC
8102 && h->def_regular)
8103 return TRUE;
8104 else if (htab->root.dynamic_sections_created && h->plt.refcount > 0)
a06ea964
NC		 8105 {
8106 /* Make sure this symbol is output as a dynamic symbol.
07d6d2b8 8107 Undefined weak syms won't yet be marked as dynamic. */
ff07562f
JW		 8108 if (h->dynindx == -1 && !h->forced_local
8109 && h->root.type == bfd_link_hash_undefweak)
a06ea964
NC		 8110 {
8111 if (!bfd_elf_link_record_dynamic_symbol (info, h))
8112 return FALSE;
8113 }
8114
0e1862bb 8115 if (bfd_link_pic (info) || WILL_CALL_FINISH_DYNAMIC_SYMBOL (1, 0, h))
a06ea964
NC		 8116 {
8117 asection *s = htab->root.splt;
8118
8119 /* If this is the first .plt entry, make room for the special
8120 first entry. */
8121 if (s->size == 0)
8122 s->size += htab->plt_header_size;
8123
8124 h->plt.offset = s->size;
8125
8126 /* If this symbol is not defined in a regular file, and we are
8127 not generating a shared library, then set the symbol to this
8128 location in the .plt. This is required to make function
8129 pointers compare as equal between the normal executable and
8130 the shared library. */
0e1862bb 8131 if (!bfd_link_pic (info) && !h->def_regular)
a06ea964
NC		 8132 {
8133 h->root.u.def.section = s;
8134 h->root.u.def.value = h->plt.offset;
8135 }
8136
8137 /* Make room for this entry. For now we only create the
8138 small model PLT entries. We later need to find a way
8139 of relaxing into these from the large model PLT entries. */
8140 s->size += PLT_SMALL_ENTRY_SIZE;
8141
8142 /* We also need to make an entry in the .got.plt section, which
8143 will be placed in the .got section by the linker script. */
8144 htab->root.sgotplt->size += GOT_ENTRY_SIZE;
8145
8146 /* We also need to make an entry in the .rela.plt section. */
8147 htab->root.srelplt->size += RELOC_SIZE (htab);
8148
8149 /* We need to ensure that all GOT entries that serve the PLT
8150 are consecutive with the special GOT slots [0] [1] and
8151 [2]. Any addtional relocations, such as
8152 R_AARCH64_TLSDESC, must be placed after the PLT related
8153 entries. We abuse the reloc_count such that during
8154 sizing we adjust reloc_count to indicate the number of
8155 PLT related reserved entries. In subsequent phases when
8156 filling in the contents of the reloc entries, PLT related
8157 entries are placed by computing their PLT index (0
8158 .. reloc_count). While other none PLT relocs are placed
8159 at the slot indicated by reloc_count and reloc_count is
8160 updated. */
8161
8162 htab->root.srelplt->reloc_count++;
8163 }
8164 else
8165 {
8166 h->plt.offset = (bfd_vma) - 1;
8167 h->needs_plt = 0;
8168 }
8169 }
8170 else
8171 {
8172 h->plt.offset = (bfd_vma) - 1;
8173 h->needs_plt = 0;
8174 }
8175
cec5225b 8176 eh = (struct elf_aarch64_link_hash_entry *) h;
a06ea964
NC		 8177 eh->tlsdesc_got_jump_table_offset = (bfd_vma) - 1;
8178
8179 if (h->got.refcount > 0)
8180 {
8181 bfd_boolean dyn;
cec5225b 8182 unsigned got_type = elf_aarch64_hash_entry (h)->got_type;
a06ea964
NC		 8183
8184 h->got.offset = (bfd_vma) - 1;
8185
8186 dyn = htab->root.dynamic_sections_created;
8187
8188 /* Make sure this symbol is output as a dynamic symbol.
07d6d2b8 8189 Undefined weak syms won't yet be marked as dynamic. */
ff07562f
JW		 8190 if (dyn && h->dynindx == -1 && !h->forced_local
8191 && h->root.type == bfd_link_hash_undefweak)
a06ea964
NC		 8192 {
8193 if (!bfd_elf_link_record_dynamic_symbol (info, h))
8194 return FALSE;
8195 }
8196
8197 if (got_type == GOT_UNKNOWN)
8198 {
8199 }
8200 else if (got_type == GOT_NORMAL)
8201 {
8202 h->got.offset = htab->root.sgot->size;
8203 htab->root.sgot->size += GOT_ENTRY_SIZE;
8204 if ((ELF_ST_VISIBILITY (h->other) == STV_DEFAULT
8205 || h->root.type != bfd_link_hash_undefweak)
0e1862bb 8206 && (bfd_link_pic (info)
a377ae2a
SN		 8207 || WILL_CALL_FINISH_DYNAMIC_SYMBOL (dyn, 0, h))
8208 /* Undefined weak symbol in static PIE resolves to 0 without
8209 any dynamic relocations. */
8210 && !UNDEFWEAK_NO_DYNAMIC_RELOC (info, h))
a06ea964
NC		 8211 {
8212 htab->root.srelgot->size += RELOC_SIZE (htab);
8213 }
8214 }
8215 else
8216 {
8217 int indx;
8218 if (got_type & GOT_TLSDESC_GD)
8219 {
8220 eh->tlsdesc_got_jump_table_offset =
8221 (htab->root.sgotplt->size
8222 - aarch64_compute_jump_table_size (htab));
8223 htab->root.sgotplt->size += GOT_ENTRY_SIZE * 2;
8224 h->got.offset = (bfd_vma) - 2;
8225 }
8226
8227 if (got_type & GOT_TLS_GD)
8228 {
8229 h->got.offset = htab->root.sgot->size;
8230 htab->root.sgot->size += GOT_ENTRY_SIZE * 2;
8231 }
8232
8233 if (got_type & GOT_TLS_IE)
8234 {
8235 h->got.offset = htab->root.sgot->size;
8236 htab->root.sgot->size += GOT_ENTRY_SIZE;
8237 }
8238
8239 indx = h && h->dynindx != -1 ? h->dynindx : 0;
8240 if ((ELF_ST_VISIBILITY (h->other) == STV_DEFAULT
8241 || h->root.type != bfd_link_hash_undefweak)
6dda7875 8242 && (!bfd_link_executable (info)
a06ea964
NC		 8243 || indx != 0
8244 || WILL_CALL_FINISH_DYNAMIC_SYMBOL (dyn, 0, h)))
8245 {
8246 if (got_type & GOT_TLSDESC_GD)
8247 {
8248 htab->root.srelplt->size += RELOC_SIZE (htab);
8249 /* Note reloc_count not incremented here! We have
8250 already adjusted reloc_count for this relocation
8251 type. */
8252
8253 /* TLSDESC PLT is now needed, but not yet determined. */
8254 htab->tlsdesc_plt = (bfd_vma) - 1;
8255 }
8256
8257 if (got_type & GOT_TLS_GD)
8258 htab->root.srelgot->size += RELOC_SIZE (htab) * 2;
8259
8260 if (got_type & GOT_TLS_IE)
8261 htab->root.srelgot->size += RELOC_SIZE (htab);
8262 }
8263 }
8264 }
8265 else
8266 {
8267 h->got.offset = (bfd_vma) - 1;
8268 }
8269
8270 if (eh->dyn_relocs == NULL)
8271 return TRUE;
8272
8273 /* In the shared -Bsymbolic case, discard space allocated for
8274 dynamic pc-relative relocs against symbols which turn out to be
8275 defined in regular objects. For the normal shared case, discard
8276 space for pc-relative relocs that have become local due to symbol
8277 visibility changes. */
8278
0e1862bb 8279 if (bfd_link_pic (info))
a06ea964
NC		 8280 {
8281 /* Relocs that use pc_count are those that appear on a call
07d6d2b8
AM		 8282 insn, or certain REL relocs that can generated via assembly.
8283 We want calls to protected symbols to resolve directly to the
8284 function rather than going via the plt. If people want
8285 function pointer comparisons to work as expected then they
8286 should avoid writing weird assembly. */
a06ea964
NC		 8287 if (SYMBOL_CALLS_LOCAL (info, h))
8288 {
8289 struct elf_dyn_relocs **pp;
8290
8291 for (pp = &eh->dyn_relocs; (p = *pp) != NULL;)
8292 {
8293 p->count -= p->pc_count;
8294 p->pc_count = 0;
8295 if (p->count == 0)
8296 *pp = p->next;
8297 else
8298 pp = &p->next;
8299 }
8300 }
8301
8302 /* Also discard relocs on undefined weak syms with non-default
07d6d2b8 8303 visibility. */
a06ea964
NC		 8304 if (eh->dyn_relocs != NULL && h->root.type == bfd_link_hash_undefweak)
8305 {
ddb7fd0f
L		 8306 if (ELF_ST_VISIBILITY (h->other) != STV_DEFAULT
8307 || UNDEFWEAK_NO_DYNAMIC_RELOC (info, h))
a06ea964
NC		 8308 eh->dyn_relocs = NULL;
8309
8310 /* Make sure undefined weak symbols are output as a dynamic
8311 symbol in PIEs. */
8312 else if (h->dynindx == -1
8313 && !h->forced_local
ff07562f 8314 && h->root.type == bfd_link_hash_undefweak
a06ea964
NC		 8315 && !bfd_elf_link_record_dynamic_symbol (info, h))
8316 return FALSE;
8317 }
8318
8319 }
8320 else if (ELIMINATE_COPY_RELOCS)
8321 {
8322 /* For the non-shared case, discard space for relocs against
07d6d2b8
AM		 8323 symbols which turn out to need copy relocs or are not
8324 dynamic. */
a06ea964
NC		 8325
8326 if (!h->non_got_ref
8327 && ((h->def_dynamic
8328 && !h->def_regular)
8329 || (htab->root.dynamic_sections_created
8330 && (h->root.type == bfd_link_hash_undefweak
8331 || h->root.type == bfd_link_hash_undefined))))
8332 {
8333 /* Make sure this symbol is output as a dynamic symbol.
8334 Undefined weak syms won't yet be marked as dynamic. */
8335 if (h->dynindx == -1
8336 && !h->forced_local
ff07562f 8337 && h->root.type == bfd_link_hash_undefweak
a06ea964
NC		 8338 && !bfd_elf_link_record_dynamic_symbol (info, h))
8339 return FALSE;
8340
8341 /* If that succeeded, we know we'll be keeping all the
8342 relocs. */
8343 if (h->dynindx != -1)
8344 goto keep;
8345 }
8346
8347 eh->dyn_relocs = NULL;
8348
8349 keep:;
8350 }
8351
8352 /* Finally, allocate space. */
8353 for (p = eh->dyn_relocs; p != NULL; p = p->next)
8354 {
8355 asection *sreloc;
8356
8357 sreloc = elf_section_data (p->sec)->sreloc;
8358
8359 BFD_ASSERT (sreloc != NULL);
8360
8361 sreloc->size += p->count * RELOC_SIZE (htab);
8362 }
8363
8364 return TRUE;
8365}
8366
1419bbe5
WN		 8367/* Allocate space in .plt, .got and associated reloc sections for
8368 ifunc dynamic relocs. */
8369
8370static bfd_boolean
8371elfNN_aarch64_allocate_ifunc_dynrelocs (struct elf_link_hash_entry *h,
8372 void *inf)
8373{
8374 struct bfd_link_info *info;
8375 struct elf_aarch64_link_hash_table *htab;
8376 struct elf_aarch64_link_hash_entry *eh;
8377
8378 /* An example of a bfd_link_hash_indirect symbol is versioned
8379 symbol. For example: __gxx_personality_v0(bfd_link_hash_indirect)
8380 -> __gxx_personality_v0(bfd_link_hash_defined)
8381
8382 There is no need to process bfd_link_hash_indirect symbols here
8383 because we will also be presented with the concrete instance of
8384 the symbol and elfNN_aarch64_copy_indirect_symbol () will have been
8385 called to copy all relevant data from the generic to the concrete
2d0ca824 8386 symbol instance. */
1419bbe5
WN		 8387 if (h->root.type == bfd_link_hash_indirect)
8388 return TRUE;
8389
8390 if (h->root.type == bfd_link_hash_warning)
8391 h = (struct elf_link_hash_entry *) h->root.u.i.link;
8392
8393 info = (struct bfd_link_info *) inf;
8394 htab = elf_aarch64_hash_table (info);
8395
8396 eh = (struct elf_aarch64_link_hash_entry *) h;
8397
8398 /* Since STT_GNU_IFUNC symbol must go through PLT, we handle it
8399 here if it is defined and referenced in a non-shared object. */
8400 if (h->type == STT_GNU_IFUNC
8401 && h->def_regular)
8402 return _bfd_elf_allocate_ifunc_dyn_relocs (info, h,
8403 &eh->dyn_relocs,
2df3368d 8404 NULL,
1419bbe5
WN		 8405 htab->plt_entry_size,
8406 htab->plt_header_size,
233cc9c1
L		 8407 GOT_ENTRY_SIZE,
8408 FALSE);
1419bbe5
WN		 8409 return TRUE;
8410}
8411
8412/* Allocate space in .plt, .got and associated reloc sections for
8413 local dynamic relocs. */
8414
8415static bfd_boolean
8416elfNN_aarch64_allocate_local_dynrelocs (void **slot, void *inf)
8417{
8418 struct elf_link_hash_entry *h
8419 = (struct elf_link_hash_entry *) *slot;
8420
8421 if (h->type != STT_GNU_IFUNC
8422 || !h->def_regular
8423 || !h->ref_regular
8424 || !h->forced_local
8425 || h->root.type != bfd_link_hash_defined)
8426 abort ();
8427
8428 return elfNN_aarch64_allocate_dynrelocs (h, inf);
8429}
8430
8431/* Allocate space in .plt, .got and associated reloc sections for
8432 local ifunc dynamic relocs. */
8433
8434static bfd_boolean
8435elfNN_aarch64_allocate_local_ifunc_dynrelocs (void **slot, void *inf)
8436{
8437 struct elf_link_hash_entry *h
8438 = (struct elf_link_hash_entry *) *slot;
8439
8440 if (h->type != STT_GNU_IFUNC
8441 || !h->def_regular
8442 || !h->ref_regular
8443 || !h->forced_local
8444 || h->root.type != bfd_link_hash_defined)
8445 abort ();
8446
8447 return elfNN_aarch64_allocate_ifunc_dynrelocs (h, inf);
8448}
a06ea964 8449
63c1f59d
AM		 8450/* Set DF_TEXTREL if we find any dynamic relocs that apply to
8451 read-only sections. */
c2170589
JW		 8452
8453static bfd_boolean
63c1f59d 8454maybe_set_textrel (struct elf_link_hash_entry *h, void *info_p)
c2170589 8455{
63c1f59d 8456 asection *sec;
c2170589 8457
63c1f59d
AM		 8458 if (h->root.type == bfd_link_hash_indirect)
8459 return TRUE;
c2170589 8460
63c1f59d
AM		 8461 sec = readonly_dynrelocs (h);
8462 if (sec != NULL)
8463 {
8464 struct bfd_link_info *info = (struct bfd_link_info *) info_p;
c2170589 8465
63c1f59d
AM		 8466 info->flags |= DF_TEXTREL;
8467 info->callbacks->minfo
c1c8c1ef 8468 (_("%pB: dynamic relocation against `%pT' in read-only section `%pA'\n"),
63c1f59d 8469 sec->owner, h->root.root.string, sec);
c2170589 8470
63c1f59d
AM		 8471 /* Not an error, just cut short the traversal. */
8472 return FALSE;
c2170589
JW		 8473 }
8474 return TRUE;
8475}
8476
a06ea964
NC		 8477/* This is the most important function of all . Innocuosly named
8478 though ! */
2d0ca824 8479
a06ea964 8480static bfd_boolean
cec5225b 8481elfNN_aarch64_size_dynamic_sections (bfd *output_bfd ATTRIBUTE_UNUSED,
a06ea964
NC		 8482 struct bfd_link_info *info)
8483{
cec5225b 8484 struct elf_aarch64_link_hash_table *htab;
a06ea964
NC		 8485 bfd *dynobj;
8486 asection *s;
8487 bfd_boolean relocs;
8488 bfd *ibfd;
8489
cec5225b 8490 htab = elf_aarch64_hash_table ((info));
a06ea964
NC		 8491 dynobj = htab->root.dynobj;
8492
8493 BFD_ASSERT (dynobj != NULL);
8494
8495 if (htab->root.dynamic_sections_created)
8496 {
9b8b325a 8497 if (bfd_link_executable (info) && !info->nointerp)
a06ea964
NC		 8498 {
8499 s = bfd_get_linker_section (dynobj, ".interp");
8500 if (s == NULL)
8501 abort ();
8502 s->size = sizeof ELF_DYNAMIC_INTERPRETER;
8503 s->contents = (unsigned char *) ELF_DYNAMIC_INTERPRETER;
8504 }
8505 }
8506
8507 /* Set up .got offsets for local syms, and space for local dynamic
8508 relocs. */
c72f2fb2 8509 for (ibfd = info->input_bfds; ibfd != NULL; ibfd = ibfd->link.next)
a06ea964
NC		 8510 {
8511 struct elf_aarch64_local_symbol *locals = NULL;
8512 Elf_Internal_Shdr *symtab_hdr;
8513 asection *srel;
8514 unsigned int i;
8515
8516 if (!is_aarch64_elf (ibfd))
8517 continue;
8518
8519 for (s = ibfd->sections; s != NULL; s = s->next)
8520 {
8521 struct elf_dyn_relocs *p;
8522
8523 for (p = (struct elf_dyn_relocs *)
8524 (elf_section_data (s)->local_dynrel); p != NULL; p = p->next)
8525 {
8526 if (!bfd_is_abs_section (p->sec)
8527 && bfd_is_abs_section (p->sec->output_section))
8528 {
8529 /* Input section has been discarded, either because
8530 it is a copy of a linkonce section or due to
8531 linker script /DISCARD/, so we'll be discarding
8532 the relocs too. */
8533 }
8534 else if (p->count != 0)
8535 {
8536 srel = elf_section_data (p->sec)->sreloc;
8537 srel->size += p->count * RELOC_SIZE (htab);
8538 if ((p->sec->output_section->flags & SEC_READONLY) != 0)
8539 info->flags |= DF_TEXTREL;
8540 }
8541 }
8542 }
8543
cec5225b 8544 locals = elf_aarch64_locals (ibfd);
a06ea964
NC		 8545 if (!locals)
8546 continue;
8547
8548 symtab_hdr = &elf_symtab_hdr (ibfd);
8549 srel = htab->root.srelgot;
8550 for (i = 0; i < symtab_hdr->sh_info; i++)
8551 {
8552 locals[i].got_offset = (bfd_vma) - 1;
8553 locals[i].tlsdesc_got_jump_table_offset = (bfd_vma) - 1;
8554 if (locals[i].got_refcount > 0)
8555 {
8556 unsigned got_type = locals[i].got_type;
8557 if (got_type & GOT_TLSDESC_GD)
8558 {
8559 locals[i].tlsdesc_got_jump_table_offset =
8560 (htab->root.sgotplt->size
8561 - aarch64_compute_jump_table_size (htab));
8562 htab->root.sgotplt->size += GOT_ENTRY_SIZE * 2;
8563 locals[i].got_offset = (bfd_vma) - 2;
8564 }
8565
8566 if (got_type & GOT_TLS_GD)
8567 {
8568 locals[i].got_offset = htab->root.sgot->size;
8569 htab->root.sgot->size += GOT_ENTRY_SIZE * 2;
8570 }
8571
b53b1bed
JW		 8572 if (got_type & GOT_TLS_IE
8573 || got_type & GOT_NORMAL)
a06ea964
NC		 8574 {
8575 locals[i].got_offset = htab->root.sgot->size;
8576 htab->root.sgot->size += GOT_ENTRY_SIZE;
8577 }
8578
8579 if (got_type == GOT_UNKNOWN)
8580 {
8581 }
8582
0e1862bb 8583 if (bfd_link_pic (info))
a06ea964
NC		 8584 {
8585 if (got_type & GOT_TLSDESC_GD)
8586 {
8587 htab->root.srelplt->size += RELOC_SIZE (htab);
8588 /* Note RELOC_COUNT not incremented here! */
8589 htab->tlsdesc_plt = (bfd_vma) - 1;
8590 }
8591
8592 if (got_type & GOT_TLS_GD)
8593 htab->root.srelgot->size += RELOC_SIZE (htab) * 2;
8594
b53b1bed
JW		 8595 if (got_type & GOT_TLS_IE
8596 || got_type & GOT_NORMAL)
a06ea964
NC		 8597 htab->root.srelgot->size += RELOC_SIZE (htab);
8598 }
8599 }
8600 else
8601 {
8602 locals[i].got_refcount = (bfd_vma) - 1;
8603 }
8604 }
8605 }
8606
8607
8608 /* Allocate global sym .plt and .got entries, and space for global
8609 sym dynamic relocs. */
cec5225b 8610 elf_link_hash_traverse (&htab->root, elfNN_aarch64_allocate_dynrelocs,
a06ea964
NC		 8611 info);
8612
1419bbe5
WN		 8613 /* Allocate global ifunc sym .plt and .got entries, and space for global
8614 ifunc sym dynamic relocs. */
8615 elf_link_hash_traverse (&htab->root, elfNN_aarch64_allocate_ifunc_dynrelocs,
8616 info);
8617
8618 /* Allocate .plt and .got entries, and space for local symbols. */
8619 htab_traverse (htab->loc_hash_table,
8620 elfNN_aarch64_allocate_local_dynrelocs,
8621 info);
8622
8623 /* Allocate .plt and .got entries, and space for local ifunc symbols. */
8624 htab_traverse (htab->loc_hash_table,
8625 elfNN_aarch64_allocate_local_ifunc_dynrelocs,
8626 info);
a06ea964
NC		 8627
8628 /* For every jump slot reserved in the sgotplt, reloc_count is
8629 incremented. However, when we reserve space for TLS descriptors,
8630 it's not incremented, so in order to compute the space reserved
8631 for them, it suffices to multiply the reloc count by the jump
8632 slot size. */
8633
8634 if (htab->root.srelplt)
8847944f 8635 htab->sgotplt_jump_table_size = aarch64_compute_jump_table_size (htab);
a06ea964
NC		 8636
8637 if (htab->tlsdesc_plt)
8638 {
8639 if (htab->root.splt->size == 0)
8640 htab->root.splt->size += PLT_ENTRY_SIZE;
8641
8642 htab->tlsdesc_plt = htab->root.splt->size;
8643 htab->root.splt->size += PLT_TLSDESC_ENTRY_SIZE;
8644
8645 /* If we're not using lazy TLS relocations, don't generate the
07d6d2b8 8646 GOT entry required. */
a06ea964
NC		 8647 if (!(info->flags & DF_BIND_NOW))
8648 {
8649 htab->dt_tlsdesc_got = htab->root.sgot->size;
8650 htab->root.sgot->size += GOT_ENTRY_SIZE;
8651 }
8652 }
8653
68fcca92 8654 /* Init mapping symbols information to use later to distingush between
4106101c
MS		 8655 code and data while scanning for errata. */
8656 if (htab->fix_erratum_835769 || htab->fix_erratum_843419)
68fcca92
JW		 8657 for (ibfd = info->input_bfds; ibfd != NULL; ibfd = ibfd->link.next)
8658 {
8659 if (!is_aarch64_elf (ibfd))
8660 continue;
8661 bfd_elfNN_aarch64_init_maps (ibfd);
8662 }
8663
a06ea964
NC		 8664 /* We now have determined the sizes of the various dynamic sections.
8665 Allocate memory for them. */
8666 relocs = FALSE;
8667 for (s = dynobj->sections; s != NULL; s = s->next)
8668 {
8669 if ((s->flags & SEC_LINKER_CREATED) == 0)
8670 continue;
8671
8672 if (s == htab->root.splt
8673 || s == htab->root.sgot
8674 || s == htab->root.sgotplt
8675 || s == htab->root.iplt
9d19e4fd 8676 || s == htab->root.igotplt
5474d94f
AM		 8677 || s == htab->root.sdynbss
8678 || s == htab->root.sdynrelro)
a06ea964
NC		 8679 {
8680 /* Strip this section if we don't need it; see the
8681 comment below. */
8682 }
8683 else if (CONST_STRNEQ (bfd_get_section_name (dynobj, s), ".rela"))
8684 {
8685 if (s->size != 0 && s != htab->root.srelplt)
8686 relocs = TRUE;
8687
8688 /* We use the reloc_count field as a counter if we need
8689 to copy relocs into the output file. */
8690 if (s != htab->root.srelplt)
8691 s->reloc_count = 0;
8692 }
8693 else
8694 {
8695 /* It's not one of our sections, so don't allocate space. */
8696 continue;
8697 }
8698
8699 if (s->size == 0)
8700 {
8701 /* If we don't need this section, strip it from the
8702 output file. This is mostly to handle .rela.bss and
8703 .rela.plt. We must create both sections in
8704 create_dynamic_sections, because they must be created
8705 before the linker maps input sections to output
8706 sections. The linker does that before
8707 adjust_dynamic_symbol is called, and it is that
8708 function which decides whether anything needs to go
8709 into these sections. */
a06ea964
NC		 8710 s->flags |= SEC_EXCLUDE;
8711 continue;
8712 }
8713
8714 if ((s->flags & SEC_HAS_CONTENTS) == 0)
8715 continue;
8716
8717 /* Allocate memory for the section contents. We use bfd_zalloc
07d6d2b8
AM		 8718 here in case unused entries are not reclaimed before the
8719 section's contents are written out. This should not happen,
8720 but this way if it does, we get a R_AARCH64_NONE reloc instead
8721 of garbage. */
a06ea964
NC		 8722 s->contents = (bfd_byte *) bfd_zalloc (dynobj, s->size);
8723 if (s->contents == NULL)
8724 return FALSE;
8725 }
8726
8727 if (htab->root.dynamic_sections_created)
8728 {
8729 /* Add some entries to the .dynamic section. We fill in the
07d6d2b8
AM		 8730 values later, in elfNN_aarch64_finish_dynamic_sections, but we
8731 must add the entries now so that we get the correct size for
8732 the .dynamic section. The DT_DEBUG entry is filled in by the
8733 dynamic linker and used by the debugger. */
a06ea964
NC		 8734#define add_dynamic_entry(TAG, VAL) \
8735 _bfd_elf_add_dynamic_entry (info, TAG, VAL)
8736
0e1862bb 8737 if (bfd_link_executable (info))
a06ea964
NC		 8738 {
8739 if (!add_dynamic_entry (DT_DEBUG, 0))
8740 return FALSE;
8741 }
8742
8743 if (htab->root.splt->size != 0)
8744 {
8745 if (!add_dynamic_entry (DT_PLTGOT, 0)
8746 || !add_dynamic_entry (DT_PLTRELSZ, 0)
8747 || !add_dynamic_entry (DT_PLTREL, DT_RELA)
8748 || !add_dynamic_entry (DT_JMPREL, 0))
8749 return FALSE;
8750
8751 if (htab->tlsdesc_plt
8752 && (!add_dynamic_entry (DT_TLSDESC_PLT, 0)
8753 || !add_dynamic_entry (DT_TLSDESC_GOT, 0)))
8754 return FALSE;
8755 }
8756
8757 if (relocs)
8758 {
8759 if (!add_dynamic_entry (DT_RELA, 0)
8760 || !add_dynamic_entry (DT_RELASZ, 0)
8761 || !add_dynamic_entry (DT_RELAENT, RELOC_SIZE (htab)))
8762 return FALSE;
8763
8764 /* If any dynamic relocs apply to a read-only section,
8765 then we need a DT_TEXTREL entry. */
c2170589 8766 if ((info->flags & DF_TEXTREL) == 0)
63c1f59d 8767 elf_link_hash_traverse (&htab->root, maybe_set_textrel, info);
c2170589 8768
a06ea964
NC		 8769 if ((info->flags & DF_TEXTREL) != 0)
8770 {
8771 if (!add_dynamic_entry (DT_TEXTREL, 0))
8772 return FALSE;
8773 }
8774 }
8775 }
8776#undef add_dynamic_entry
8777
8778 return TRUE;
a06ea964
NC		 8779}
8780
8781static inline void
caed7120
YZ		 8782elf_aarch64_update_plt_entry (bfd *output_bfd,
8783 bfd_reloc_code_real_type r_type,
8784 bfd_byte *plt_entry, bfd_vma value)
a06ea964 8785{
caed7120
YZ		 8786 reloc_howto_type *howto = elfNN_aarch64_howto_from_bfd_reloc (r_type);
8787
1d75a8e2
NC		 8788 /* FIXME: We should check the return value from this function call. */
8789 (void) _bfd_aarch64_elf_put_addend (output_bfd, plt_entry, r_type, howto, value);
a06ea964
NC		 8790}
8791
8792static void
cec5225b
YZ		 8793elfNN_aarch64_create_small_pltn_entry (struct elf_link_hash_entry *h,
8794 struct elf_aarch64_link_hash_table
1419bbe5
WN		 8795 *htab, bfd *output_bfd,
8796 struct bfd_link_info *info)
a06ea964
NC		 8797{
8798 bfd_byte *plt_entry;
8799 bfd_vma plt_index;
8800 bfd_vma got_offset;
8801 bfd_vma gotplt_entry_address;
8802 bfd_vma plt_entry_address;
8803 Elf_Internal_Rela rela;
8804 bfd_byte *loc;
1419bbe5
WN		 8805 asection *plt, *gotplt, *relplt;
8806
8807 /* When building a static executable, use .iplt, .igot.plt and
8808 .rela.iplt sections for STT_GNU_IFUNC symbols. */
8809 if (htab->root.splt != NULL)
8810 {
8811 plt = htab->root.splt;
8812 gotplt = htab->root.sgotplt;
8813 relplt = htab->root.srelplt;
8814 }
8815 else
8816 {
8817 plt = htab->root.iplt;
8818 gotplt = htab->root.igotplt;
8819 relplt = htab->root.irelplt;
8820 }
8821
8822 /* Get the index in the procedure linkage table which
8823 corresponds to this symbol. This is the index of this symbol
8824 in all the symbols for which we are making plt entries. The
8825 first entry in the procedure linkage table is reserved.
a06ea964 8826
1419bbe5
WN		 8827 Get the offset into the .got table of the entry that
8828 corresponds to this function. Each .got entry is GOT_ENTRY_SIZE
8829 bytes. The first three are reserved for the dynamic linker.
692e2b8b 8830
1419bbe5
WN		 8831 For static executables, we don't reserve anything. */
8832
8833 if (plt == htab->root.splt)
8834 {
8835 plt_index = (h->plt.offset - htab->plt_header_size) / htab->plt_entry_size;
8836 got_offset = (plt_index + 3) * GOT_ENTRY_SIZE;
8837 }
8838 else
8839 {
8840 plt_index = h->plt.offset / htab->plt_entry_size;
8841 got_offset = plt_index * GOT_ENTRY_SIZE;
8842 }
8843
8844 plt_entry = plt->contents + h->plt.offset;
8845 plt_entry_address = plt->output_section->vma
f44a1f8e 8846 + plt->output_offset + h->plt.offset;
1419bbe5
WN		 8847 gotplt_entry_address = gotplt->output_section->vma +
8848 gotplt->output_offset + got_offset;
a06ea964
NC		 8849
8850 /* Copy in the boiler-plate for the PLTn entry. */
cec5225b 8851 memcpy (plt_entry, elfNN_aarch64_small_plt_entry, PLT_SMALL_ENTRY_SIZE);
a06ea964
NC		 8852
8853 /* Fill in the top 21 bits for this: ADRP x16, PLT_GOT + n * 8.
8854 ADRP: ((PG(S+A)-PG(P)) >> 12) & 0x1fffff */
caed7120
YZ		 8855 elf_aarch64_update_plt_entry (output_bfd, BFD_RELOC_AARCH64_ADR_HI21_PCREL,
8856 plt_entry,
8857 PG (gotplt_entry_address) -
8858 PG (plt_entry_address));
a06ea964
NC		 8859
8860 /* Fill in the lo12 bits for the load from the pltgot. */
caed7120
YZ		 8861 elf_aarch64_update_plt_entry (output_bfd, BFD_RELOC_AARCH64_LDSTNN_LO12,
8862 plt_entry + 4,
8863 PG_OFFSET (gotplt_entry_address));
a06ea964 8864
9aff4b7a 8865 /* Fill in the lo12 bits for the add from the pltgot entry. */
caed7120
YZ		 8866 elf_aarch64_update_plt_entry (output_bfd, BFD_RELOC_AARCH64_ADD_LO12,
8867 plt_entry + 8,
8868 PG_OFFSET (gotplt_entry_address));
a06ea964
NC		 8869
8870 /* All the GOTPLT Entries are essentially initialized to PLT0. */
cec5225b 8871 bfd_put_NN (output_bfd,
1419bbe5
WN		 8872 plt->output_section->vma + plt->output_offset,
8873 gotplt->contents + got_offset);
a06ea964 8874
a06ea964 8875 rela.r_offset = gotplt_entry_address;
1419bbe5
WN		 8876
8877 if (h->dynindx == -1
0e1862bb 8878 || ((bfd_link_executable (info)
1419bbe5
WN		 8879 || ELF_ST_VISIBILITY (h->other) != STV_DEFAULT)
8880 && h->def_regular
8881 && h->type == STT_GNU_IFUNC))
8882 {
8883 /* If an STT_GNU_IFUNC symbol is locally defined, generate
8884 R_AARCH64_IRELATIVE instead of R_AARCH64_JUMP_SLOT. */
8885 rela.r_info = ELFNN_R_INFO (0, AARCH64_R (IRELATIVE));
8886 rela.r_addend = (h->root.u.def.value
8887 + h->root.u.def.section->output_section->vma
8888 + h->root.u.def.section->output_offset);
8889 }
8890 else
8891 {
8892 /* Fill in the entry in the .rela.plt section. */
8893 rela.r_info = ELFNN_R_INFO (h->dynindx, AARCH64_R (JUMP_SLOT));
8894 rela.r_addend = 0;
8895 }
a06ea964
NC		 8896
8897 /* Compute the relocation entry to used based on PLT index and do
8898 not adjust reloc_count. The reloc_count has already been adjusted
8899 to account for this entry. */
1419bbe5 8900 loc = relplt->contents + plt_index * RELOC_SIZE (htab);
cec5225b 8901 bfd_elfNN_swap_reloca_out (output_bfd, &rela, loc);
a06ea964
NC		 8902}
8903
8904/* Size sections even though they're not dynamic. We use it to setup
8905 _TLS_MODULE_BASE_, if needed. */
8906
8907static bfd_boolean
cec5225b 8908elfNN_aarch64_always_size_sections (bfd *output_bfd,
a06ea964
NC		 8909 struct bfd_link_info *info)
8910{
8911 asection *tls_sec;
8912
0e1862bb 8913 if (bfd_link_relocatable (info))
a06ea964
NC		 8914 return TRUE;
8915
8916 tls_sec = elf_hash_table (info)->tls_sec;
8917
8918 if (tls_sec)
8919 {
8920 struct elf_link_hash_entry *tlsbase;
8921
8922 tlsbase = elf_link_hash_lookup (elf_hash_table (info),
8923 "_TLS_MODULE_BASE_", TRUE, TRUE, FALSE);
8924
8925 if (tlsbase)
8926 {
8927 struct bfd_link_hash_entry *h = NULL;
8928 const struct elf_backend_data *bed =
8929 get_elf_backend_data (output_bfd);
8930
8931 if (!(_bfd_generic_link_add_one_symbol
8932 (info, output_bfd, "_TLS_MODULE_BASE_", BSF_LOCAL,
8933 tls_sec, 0, NULL, FALSE, bed->collect, &h)))
8934 return FALSE;
8935
8936 tlsbase->type = STT_TLS;
8937 tlsbase = (struct elf_link_hash_entry *) h;
8938 tlsbase->def_regular = 1;
8939 tlsbase->other = STV_HIDDEN;
8940 (*bed->elf_backend_hide_symbol) (info, tlsbase, TRUE);
8941 }
8942 }
8943
8944 return TRUE;
8945}
8946
8947/* Finish up dynamic symbol handling. We set the contents of various
8948 dynamic sections here. */
2d0ca824 8949
a06ea964 8950static bfd_boolean
cec5225b 8951elfNN_aarch64_finish_dynamic_symbol (bfd *output_bfd,
a06ea964
NC		 8952 struct bfd_link_info *info,
8953 struct elf_link_hash_entry *h,
8954 Elf_Internal_Sym *sym)
8955{
cec5225b
YZ		 8956 struct elf_aarch64_link_hash_table *htab;
8957 htab = elf_aarch64_hash_table (info);
a06ea964
NC		 8958
8959 if (h->plt.offset != (bfd_vma) - 1)
8960 {
1419bbe5
WN		 8961 asection *plt, *gotplt, *relplt;
8962
a06ea964 8963 /* This symbol has an entry in the procedure linkage table. Set
07d6d2b8 8964 it up. */
a06ea964 8965
1419bbe5
WN		 8966 /* When building a static executable, use .iplt, .igot.plt and
8967 .rela.iplt sections for STT_GNU_IFUNC symbols. */
8968 if (htab->root.splt != NULL)
8969 {
8970 plt = htab->root.splt;
8971 gotplt = htab->root.sgotplt;
8972 relplt = htab->root.srelplt;
8973 }
8974 else
8975 {
8976 plt = htab->root.iplt;
8977 gotplt = htab->root.igotplt;
8978 relplt = htab->root.irelplt;
8979 }
8980
8981 /* This symbol has an entry in the procedure linkage table. Set
8982 it up. */
8983 if ((h->dynindx == -1
0e1862bb 8984 && !((h->forced_local || bfd_link_executable (info))
1419bbe5
WN		 8985 && h->def_regular
8986 && h->type == STT_GNU_IFUNC))
8987 || plt == NULL
8988 || gotplt == NULL
8989 || relplt == NULL)
f955cccf 8990 return FALSE;
a06ea964 8991
1419bbe5 8992 elfNN_aarch64_create_small_pltn_entry (h, htab, output_bfd, info);
a06ea964
NC		 8993 if (!h->def_regular)
8994 {
8995 /* Mark the symbol as undefined, rather than as defined in
46b87d49 8996 the .plt section. */
a06ea964 8997 sym->st_shndx = SHN_UNDEF;
46b87d49
WN		 8998 /* If the symbol is weak we need to clear the value.
8999 Otherwise, the PLT entry would provide a definition for
9000 the symbol even if the symbol wasn't defined anywhere,
9001 and so the symbol would never be NULL. Leave the value if
9002 there were any relocations where pointer equality matters
9003 (this is a clue for the dynamic linker, to make function
9004 pointer comparisons work between an application and shared
9005 library). */
9006 if (!h->ref_regular_nonweak || !h->pointer_equality_needed)
9007 sym->st_value = 0;
a06ea964
NC		 9008 }
9009 }
9010
9011 if (h->got.offset != (bfd_vma) - 1
a377ae2a
SN		 9012 && elf_aarch64_hash_entry (h)->got_type == GOT_NORMAL
9013 /* Undefined weak symbol in static PIE resolves to 0 without
9014 any dynamic relocations. */
9015 && !UNDEFWEAK_NO_DYNAMIC_RELOC (info, h))
a06ea964
NC		 9016 {
9017 Elf_Internal_Rela rela;
9018 bfd_byte *loc;
9019
9020 /* This symbol has an entry in the global offset table. Set it
07d6d2b8 9021 up. */
a06ea964
NC		 9022 if (htab->root.sgot == NULL || htab->root.srelgot == NULL)
9023 abort ();
9024
9025 rela.r_offset = (htab->root.sgot->output_section->vma
9026 + htab->root.sgot->output_offset
9027 + (h->got.offset & ~(bfd_vma) 1));
9028
49206388
WN		 9029 if (h->def_regular
9030 && h->type == STT_GNU_IFUNC)
9031 {
0e1862bb 9032 if (bfd_link_pic (info))
49206388
WN		 9033 {
9034 /* Generate R_AARCH64_GLOB_DAT. */
9035 goto do_glob_dat;
9036 }
9037 else
9038 {
9039 asection *plt;
9040
9041 if (!h->pointer_equality_needed)
9042 abort ();
9043
9044 /* For non-shared object, we can't use .got.plt, which
9045 contains the real function address if we need pointer
9046 equality. We load the GOT entry with the PLT entry. */
9047 plt = htab->root.splt ? htab->root.splt : htab->root.iplt;
9048 bfd_put_NN (output_bfd, (plt->output_section->vma
9049 + plt->output_offset
9050 + h->plt.offset),
9051 htab->root.sgot->contents
9052 + (h->got.offset & ~(bfd_vma) 1));
9053 return TRUE;
9054 }
9055 }
0e1862bb 9056 else if (bfd_link_pic (info) && SYMBOL_REFERENCES_LOCAL (info, h))
a06ea964 9057 {
0ee3a6db 9058 if (!(h->def_regular || ELF_COMMON_DEF_P (h)))
a06ea964
NC		 9059 return FALSE;
9060
9061 BFD_ASSERT ((h->got.offset & 1) != 0);
a6bb11b2 9062 rela.r_info = ELFNN_R_INFO (0, AARCH64_R (RELATIVE));
a06ea964
NC		 9063 rela.r_addend = (h->root.u.def.value
9064 + h->root.u.def.section->output_section->vma
9065 + h->root.u.def.section->output_offset);
9066 }
9067 else
9068 {
49206388 9069do_glob_dat:
a06ea964 9070 BFD_ASSERT ((h->got.offset & 1) == 0);
cec5225b 9071 bfd_put_NN (output_bfd, (bfd_vma) 0,
a06ea964 9072 htab->root.sgot->contents + h->got.offset);
a6bb11b2 9073 rela.r_info = ELFNN_R_INFO (h->dynindx, AARCH64_R (GLOB_DAT));
a06ea964
NC		 9074 rela.r_addend = 0;
9075 }
9076
9077 loc = htab->root.srelgot->contents;
9078 loc += htab->root.srelgot->reloc_count++ * RELOC_SIZE (htab);
cec5225b 9079 bfd_elfNN_swap_reloca_out (output_bfd, &rela, loc);
a06ea964
NC		 9080 }
9081
9082 if (h->needs_copy)
9083 {
9084 Elf_Internal_Rela rela;
5474d94f 9085 asection *s;
a06ea964
NC		 9086 bfd_byte *loc;
9087
9088 /* This symbol needs a copy reloc. Set it up. */
a06ea964
NC		 9089 if (h->dynindx == -1
9090 || (h->root.type != bfd_link_hash_defined
9091 && h->root.type != bfd_link_hash_defweak)
9d19e4fd 9092 || htab->root.srelbss == NULL)
a06ea964
NC		 9093 abort ();
9094
9095 rela.r_offset = (h->root.u.def.value
9096 + h->root.u.def.section->output_section->vma
9097 + h->root.u.def.section->output_offset);
a6bb11b2 9098 rela.r_info = ELFNN_R_INFO (h->dynindx, AARCH64_R (COPY));
a06ea964 9099 rela.r_addend = 0;
afbf7e8e 9100 if (h->root.u.def.section == htab->root.sdynrelro)
5474d94f
AM		 9101 s = htab->root.sreldynrelro;
9102 else
9103 s = htab->root.srelbss;
9104 loc = s->contents + s->reloc_count++ * RELOC_SIZE (htab);
cec5225b 9105 bfd_elfNN_swap_reloca_out (output_bfd, &rela, loc);
a06ea964
NC		 9106 }
9107
9108 /* Mark _DYNAMIC and _GLOBAL_OFFSET_TABLE_ as absolute. SYM may
9109 be NULL for local symbols. */
9110 if (sym != NULL
9637f6ef 9111 && (h == elf_hash_table (info)->hdynamic
a06ea964
NC		 9112 || h == elf_hash_table (info)->hgot))
9113 sym->st_shndx = SHN_ABS;
9114
9115 return TRUE;
9116}
9117
1419bbe5
WN		 9118/* Finish up local dynamic symbol handling. We set the contents of
9119 various dynamic sections here. */
9120
9121static bfd_boolean
9122elfNN_aarch64_finish_local_dynamic_symbol (void **slot, void *inf)
9123{
9124 struct elf_link_hash_entry *h
9125 = (struct elf_link_hash_entry *) *slot;
9126 struct bfd_link_info *info
9127 = (struct bfd_link_info *) inf;
9128
9129 return elfNN_aarch64_finish_dynamic_symbol (info->output_bfd,
9130 info, h, NULL);
9131}
9132
a06ea964 9133static void
cec5225b
YZ		 9134elfNN_aarch64_init_small_plt0_entry (bfd *output_bfd ATTRIBUTE_UNUSED,
9135 struct elf_aarch64_link_hash_table
a06ea964
NC		 9136 *htab)
9137{
9138 /* Fill in PLT0. Fixme:RR Note this doesn't distinguish between
9139 small and large plts and at the minute just generates
9140 the small PLT. */
9141
cec5225b 9142 /* PLT0 of the small PLT looks like this in ELF64 -
a06ea964
NC		 9143 stp x16, x30, [sp, #-16]! // Save the reloc and lr on stack.
9144 adrp x16, PLT_GOT + 16 // Get the page base of the GOTPLT
9145 ldr x17, [x16, #:lo12:PLT_GOT+16] // Load the address of the
9146 // symbol resolver
9147 add x16, x16, #:lo12:PLT_GOT+16 // Load the lo12 bits of the
9148 // GOTPLT entry for this.
9149 br x17
cec5225b 9150 PLT0 will be slightly different in ELF32 due to different got entry
2d0ca824 9151 size. */
caed7120 9152 bfd_vma plt_got_2nd_ent; /* Address of GOT[2]. */
a06ea964
NC		 9153 bfd_vma plt_base;
9154
9155
cec5225b 9156 memcpy (htab->root.splt->contents, elfNN_aarch64_small_plt0_entry,
a06ea964
NC		 9157 PLT_ENTRY_SIZE);
9158 elf_section_data (htab->root.splt->output_section)->this_hdr.sh_entsize =
9159 PLT_ENTRY_SIZE;
9160
caed7120
YZ		 9161 plt_got_2nd_ent = (htab->root.sgotplt->output_section->vma
9162 + htab->root.sgotplt->output_offset
9163 + GOT_ENTRY_SIZE * 2);
a06ea964
NC		 9164
9165 plt_base = htab->root.splt->output_section->vma +
f44a1f8e 9166 htab->root.splt->output_offset;
a06ea964
NC		 9167
9168 /* Fill in the top 21 bits for this: ADRP x16, PLT_GOT + n * 8.
9169 ADRP: ((PG(S+A)-PG(P)) >> 12) & 0x1fffff */
caed7120
YZ		 9170 elf_aarch64_update_plt_entry (output_bfd, BFD_RELOC_AARCH64_ADR_HI21_PCREL,
9171 htab->root.splt->contents + 4,
9172 PG (plt_got_2nd_ent) - PG (plt_base + 4));
a06ea964 9173
caed7120
YZ		 9174 elf_aarch64_update_plt_entry (output_bfd, BFD_RELOC_AARCH64_LDSTNN_LO12,
9175 htab->root.splt->contents + 8,
9176 PG_OFFSET (plt_got_2nd_ent));
a06ea964 9177
caed7120
YZ		 9178 elf_aarch64_update_plt_entry (output_bfd, BFD_RELOC_AARCH64_ADD_LO12,
9179 htab->root.splt->contents + 12,
9180 PG_OFFSET (plt_got_2nd_ent));
a06ea964
NC		 9181}
9182
9183static bfd_boolean
cec5225b 9184elfNN_aarch64_finish_dynamic_sections (bfd *output_bfd,
a06ea964
NC		 9185 struct bfd_link_info *info)
9186{
cec5225b 9187 struct elf_aarch64_link_hash_table *htab;
a06ea964
NC		 9188 bfd *dynobj;
9189 asection *sdyn;
9190
cec5225b 9191 htab = elf_aarch64_hash_table (info);
a06ea964
NC		 9192 dynobj = htab->root.dynobj;
9193 sdyn = bfd_get_linker_section (dynobj, ".dynamic");
9194
9195 if (htab->root.dynamic_sections_created)
9196 {
cec5225b 9197 ElfNN_External_Dyn *dyncon, *dynconend;
a06ea964
NC		 9198
9199 if (sdyn == NULL || htab->root.sgot == NULL)
9200 abort ();
9201
cec5225b
YZ		 9202 dyncon = (ElfNN_External_Dyn *) sdyn->contents;
9203 dynconend = (ElfNN_External_Dyn *) (sdyn->contents + sdyn->size);
a06ea964
NC		 9204 for (; dyncon < dynconend; dyncon++)
9205 {
9206 Elf_Internal_Dyn dyn;
9207 asection *s;
9208
cec5225b 9209 bfd_elfNN_swap_dyn_in (dynobj, dyncon, &dyn);
a06ea964
NC		 9210
9211 switch (dyn.d_tag)
9212 {
9213 default:
9214 continue;
9215
9216 case DT_PLTGOT:
9217 s = htab->root.sgotplt;
9218 dyn.d_un.d_ptr = s->output_section->vma + s->output_offset;
9219 break;
9220
9221 case DT_JMPREL:
4ade44b7
AM		 9222 s = htab->root.srelplt;
9223 dyn.d_un.d_ptr = s->output_section->vma + s->output_offset;
a06ea964
NC		 9224 break;
9225
9226 case DT_PLTRELSZ:
c955de36 9227 s = htab->root.srelplt;
a06ea964
NC		 9228 dyn.d_un.d_val = s->size;
9229 break;
9230
a06ea964
NC		 9231 case DT_TLSDESC_PLT:
9232 s = htab->root.splt;
9233 dyn.d_un.d_ptr = s->output_section->vma + s->output_offset
9234 + htab->tlsdesc_plt;
9235 break;
9236
9237 case DT_TLSDESC_GOT:
9238 s = htab->root.sgot;
9239 dyn.d_un.d_ptr = s->output_section->vma + s->output_offset
9240 + htab->dt_tlsdesc_got;
9241 break;
9242 }
9243
cec5225b 9244 bfd_elfNN_swap_dyn_out (output_bfd, &dyn, dyncon);
a06ea964
NC		 9245 }
9246
9247 }
9248
9249 /* Fill in the special first entry in the procedure linkage table. */
9250 if (htab->root.splt && htab->root.splt->size > 0)
9251 {
cec5225b 9252 elfNN_aarch64_init_small_plt0_entry (output_bfd, htab);
a06ea964
NC		 9253
9254 elf_section_data (htab->root.splt->output_section)->
9255 this_hdr.sh_entsize = htab->plt_entry_size;
9256
9257
9258 if (htab->tlsdesc_plt)
9259 {
cec5225b 9260 bfd_put_NN (output_bfd, (bfd_vma) 0,
a06ea964
NC		 9261 htab->root.sgot->contents + htab->dt_tlsdesc_got);
9262
9263 memcpy (htab->root.splt->contents + htab->tlsdesc_plt,
cec5225b
YZ		 9264 elfNN_aarch64_tlsdesc_small_plt_entry,
9265 sizeof (elfNN_aarch64_tlsdesc_small_plt_entry));
a06ea964
NC		 9266
9267 {
9268 bfd_vma adrp1_addr =
9269 htab->root.splt->output_section->vma
9270 + htab->root.splt->output_offset + htab->tlsdesc_plt + 4;
9271
caed7120 9272 bfd_vma adrp2_addr = adrp1_addr + 4;
a06ea964
NC		 9273
9274 bfd_vma got_addr =
9275 htab->root.sgot->output_section->vma
9276 + htab->root.sgot->output_offset;
9277
9278 bfd_vma pltgot_addr =
9279 htab->root.sgotplt->output_section->vma
9280 + htab->root.sgotplt->output_offset;
9281
9282 bfd_vma dt_tlsdesc_got = got_addr + htab->dt_tlsdesc_got;
caed7120
YZ		 9283
9284 bfd_byte *plt_entry =
9285 htab->root.splt->contents + htab->tlsdesc_plt;
a06ea964
NC		 9286
9287 /* adrp x2, DT_TLSDESC_GOT */
caed7120
YZ		 9288 elf_aarch64_update_plt_entry (output_bfd,
9289 BFD_RELOC_AARCH64_ADR_HI21_PCREL,
9290 plt_entry + 4,
9291 (PG (dt_tlsdesc_got)
9292 - PG (adrp1_addr)));
a06ea964
NC		 9293
9294 /* adrp x3, 0 */
caed7120
YZ		 9295 elf_aarch64_update_plt_entry (output_bfd,
9296 BFD_RELOC_AARCH64_ADR_HI21_PCREL,
9297 plt_entry + 8,
9298 (PG (pltgot_addr)
9299 - PG (adrp2_addr)));
a06ea964
NC		 9300
9301 /* ldr x2, [x2, #0] */
caed7120
YZ		 9302 elf_aarch64_update_plt_entry (output_bfd,
9303 BFD_RELOC_AARCH64_LDSTNN_LO12,
9304 plt_entry + 12,
9305 PG_OFFSET (dt_tlsdesc_got));
a06ea964
NC		 9306
9307 /* add x3, x3, 0 */
caed7120
YZ		 9308 elf_aarch64_update_plt_entry (output_bfd,
9309 BFD_RELOC_AARCH64_ADD_LO12,
9310 plt_entry + 16,
9311 PG_OFFSET (pltgot_addr));
a06ea964
NC		 9312 }
9313 }
9314 }
9315
9316 if (htab->root.sgotplt)
9317 {
9318 if (bfd_is_abs_section (htab->root.sgotplt->output_section))
9319 {
4eca0228 9320 _bfd_error_handler
871b3ab2 9321 (_("discarded output section: `%pA'"), htab->root.sgotplt);
a06ea964
NC		 9322 return FALSE;
9323 }
9324
9325 /* Fill in the first three entries in the global offset table. */
9326 if (htab->root.sgotplt->size > 0)
9327 {
8db339a6
MS		 9328 bfd_put_NN (output_bfd, (bfd_vma) 0, htab->root.sgotplt->contents);
9329
a06ea964 9330 /* Write GOT[1] and GOT[2], needed for the dynamic linker. */
cec5225b 9331 bfd_put_NN (output_bfd,
a06ea964
NC		 9332 (bfd_vma) 0,
9333 htab->root.sgotplt->contents + GOT_ENTRY_SIZE);
cec5225b 9334 bfd_put_NN (output_bfd,
a06ea964
NC		 9335 (bfd_vma) 0,
9336 htab->root.sgotplt->contents + GOT_ENTRY_SIZE * 2);
9337 }
9338
8db339a6
MS		 9339 if (htab->root.sgot)
9340 {
9341 if (htab->root.sgot->size > 0)
9342 {
9343 bfd_vma addr =
9344 sdyn ? sdyn->output_section->vma + sdyn->output_offset : 0;
9345 bfd_put_NN (output_bfd, addr, htab->root.sgot->contents);
9346 }
9347 }
9348
a06ea964
NC		 9349 elf_section_data (htab->root.sgotplt->output_section)->
9350 this_hdr.sh_entsize = GOT_ENTRY_SIZE;
9351 }
9352
9353 if (htab->root.sgot && htab->root.sgot->size > 0)
9354 elf_section_data (htab->root.sgot->output_section)->this_hdr.sh_entsize
9355 = GOT_ENTRY_SIZE;
9356
1419bbe5
WN		 9357 /* Fill PLT and GOT entries for local STT_GNU_IFUNC symbols. */
9358 htab_traverse (htab->loc_hash_table,
9359 elfNN_aarch64_finish_local_dynamic_symbol,
9360 info);
9361
a06ea964
NC		 9362 return TRUE;
9363}
9364
9365/* Return address for Ith PLT stub in section PLT, for relocation REL
9366 or (bfd_vma) -1 if it should not be included. */
9367
9368static bfd_vma
cec5225b 9369elfNN_aarch64_plt_sym_val (bfd_vma i, const asection *plt,
a06ea964
NC		 9370 const arelent *rel ATTRIBUTE_UNUSED)
9371{
9372 return plt->vma + PLT_ENTRY_SIZE + i * PLT_SMALL_ENTRY_SIZE;
9373}
9374
d691934d
NC		 9375/* Returns TRUE if NAME is an AArch64 mapping symbol.
9376 The ARM ELF standard defines $x (for A64 code) and $d (for data).
9377 It also allows a period initiated suffix to be added to the symbol, ie:
9378 "$[adtx]\.[:sym_char]+". */
9379
9380static bfd_boolean
9381is_aarch64_mapping_symbol (const char * name)
9382{
9383 return name != NULL /* Paranoia. */
9384 && name[0] == '$' /* Note: if objcopy --prefix-symbols has been used then
9385 the mapping symbols could have acquired a prefix.
9386 We do not support this here, since such symbols no
9387 longer conform to the ARM ELF ABI. */
9388 && (name[1] == 'd' || name[1] == 'x')
9389 && (name[2] == 0 || name[2] == '.');
9390 /* FIXME: Strictly speaking the symbol is only a valid mapping symbol if
9391 any characters that follow the period are legal characters for the body
9392 of a symbol's name. For now we just assume that this is the case. */
9393}
9394
9395/* Make sure that mapping symbols in object files are not removed via the
9396 "strip --strip-unneeded" tool. These symbols might needed in order to
9397 correctly generate linked files. Once an object file has been linked,
9398 it should be safe to remove them. */
9399
9400static void
9401elfNN_aarch64_backend_symbol_processing (bfd *abfd, asymbol *sym)
9402{
9403 if (((abfd->flags & (EXEC_P | DYNAMIC)) == 0)
9404 && sym->section != bfd_abs_section_ptr
9405 && is_aarch64_mapping_symbol (sym->name))
9406 sym->flags |= BSF_KEEP;
9407}
9408
a06ea964
NC		 9409
9410/* We use this so we can override certain functions
9411 (though currently we don't). */
9412
cec5225b 9413const struct elf_size_info elfNN_aarch64_size_info =
a06ea964 9414{
cec5225b
YZ		 9415 sizeof (ElfNN_External_Ehdr),
9416 sizeof (ElfNN_External_Phdr),
9417 sizeof (ElfNN_External_Shdr),
9418 sizeof (ElfNN_External_Rel),
9419 sizeof (ElfNN_External_Rela),
9420 sizeof (ElfNN_External_Sym),
9421 sizeof (ElfNN_External_Dyn),
a06ea964
NC		 9422 sizeof (Elf_External_Note),
9423 4, /* Hash table entry size. */
9424 1, /* Internal relocs per external relocs. */
cec5225b
YZ		 9425 ARCH_SIZE, /* Arch size. */
9426 LOG_FILE_ALIGN, /* Log_file_align. */
9427 ELFCLASSNN, EV_CURRENT,
9428 bfd_elfNN_write_out_phdrs,
9429 bfd_elfNN_write_shdrs_and_ehdr,
9430 bfd_elfNN_checksum_contents,
9431 bfd_elfNN_write_relocs,
9432 bfd_elfNN_swap_symbol_in,
9433 bfd_elfNN_swap_symbol_out,
9434 bfd_elfNN_slurp_reloc_table,
9435 bfd_elfNN_slurp_symbol_table,
9436 bfd_elfNN_swap_dyn_in,
9437 bfd_elfNN_swap_dyn_out,
9438 bfd_elfNN_swap_reloc_in,
9439 bfd_elfNN_swap_reloc_out,
9440 bfd_elfNN_swap_reloca_in,
9441 bfd_elfNN_swap_reloca_out
a06ea964
NC		 9442};
9443
9444#define ELF_ARCH bfd_arch_aarch64
9445#define ELF_MACHINE_CODE EM_AARCH64
9446#define ELF_MAXPAGESIZE 0x10000
9447#define ELF_MINPAGESIZE 0x1000
9448#define ELF_COMMONPAGESIZE 0x1000
9449
07d6d2b8 9450#define bfd_elfNN_close_and_cleanup \
cec5225b 9451 elfNN_aarch64_close_and_cleanup
a06ea964 9452
07d6d2b8 9453#define bfd_elfNN_bfd_free_cached_info \
cec5225b 9454 elfNN_aarch64_bfd_free_cached_info
a06ea964 9455
cec5225b
YZ		 9456#define bfd_elfNN_bfd_is_target_special_symbol \
9457 elfNN_aarch64_is_target_special_symbol
a06ea964 9458
07d6d2b8 9459#define bfd_elfNN_bfd_link_hash_table_create \
cec5225b 9460 elfNN_aarch64_link_hash_table_create
a06ea964 9461
cec5225b
YZ		 9462#define bfd_elfNN_bfd_merge_private_bfd_data \
9463 elfNN_aarch64_merge_private_bfd_data
a06ea964 9464
cec5225b
YZ		 9465#define bfd_elfNN_bfd_print_private_bfd_data \
9466 elfNN_aarch64_print_private_bfd_data
a06ea964 9467
cec5225b
YZ		 9468#define bfd_elfNN_bfd_reloc_type_lookup \
9469 elfNN_aarch64_reloc_type_lookup
a06ea964 9470
cec5225b
YZ		 9471#define bfd_elfNN_bfd_reloc_name_lookup \
9472 elfNN_aarch64_reloc_name_lookup
a06ea964 9473
cec5225b
YZ		 9474#define bfd_elfNN_bfd_set_private_flags \
9475 elfNN_aarch64_set_private_flags
a06ea964 9476
cec5225b
YZ		 9477#define bfd_elfNN_find_inliner_info \
9478 elfNN_aarch64_find_inliner_info
a06ea964 9479
cec5225b
YZ		 9480#define bfd_elfNN_find_nearest_line \
9481 elfNN_aarch64_find_nearest_line
a06ea964 9482
cec5225b
YZ		 9483#define bfd_elfNN_mkobject \
9484 elfNN_aarch64_mkobject
a06ea964 9485
cec5225b
YZ		 9486#define bfd_elfNN_new_section_hook \
9487 elfNN_aarch64_new_section_hook
a06ea964
NC		 9488
9489#define elf_backend_adjust_dynamic_symbol \
cec5225b 9490 elfNN_aarch64_adjust_dynamic_symbol
a06ea964
NC		 9491
9492#define elf_backend_always_size_sections \
cec5225b 9493 elfNN_aarch64_always_size_sections
a06ea964
NC		 9494
9495#define elf_backend_check_relocs \
cec5225b 9496 elfNN_aarch64_check_relocs
a06ea964
NC		 9497
9498#define elf_backend_copy_indirect_symbol \
cec5225b 9499 elfNN_aarch64_copy_indirect_symbol
a06ea964
NC		 9500
9501/* Create .dynbss, and .rela.bss sections in DYNOBJ, and set up shortcuts
9502 to them in our hash. */
9503#define elf_backend_create_dynamic_sections \
cec5225b 9504 elfNN_aarch64_create_dynamic_sections
a06ea964
NC		 9505
9506#define elf_backend_init_index_section \
9507 _bfd_elf_init_2_index_sections
9508
a06ea964 9509#define elf_backend_finish_dynamic_sections \
cec5225b 9510 elfNN_aarch64_finish_dynamic_sections
a06ea964
NC		 9511
9512#define elf_backend_finish_dynamic_symbol \
cec5225b 9513 elfNN_aarch64_finish_dynamic_symbol
a06ea964 9514
a06ea964 9515#define elf_backend_object_p \
cec5225b 9516 elfNN_aarch64_object_p
a06ea964 9517
07d6d2b8 9518#define elf_backend_output_arch_local_syms \
cec5225b 9519 elfNN_aarch64_output_arch_local_syms
a06ea964
NC		 9520
9521#define elf_backend_plt_sym_val \
cec5225b 9522 elfNN_aarch64_plt_sym_val
a06ea964
NC		 9523
9524#define elf_backend_post_process_headers \
cec5225b 9525 elfNN_aarch64_post_process_headers
a06ea964
NC		 9526
9527#define elf_backend_relocate_section \
cec5225b 9528 elfNN_aarch64_relocate_section
a06ea964
NC		 9529
9530#define elf_backend_reloc_type_class \
cec5225b 9531 elfNN_aarch64_reloc_type_class
a06ea964 9532
a06ea964 9533#define elf_backend_section_from_shdr \
cec5225b 9534 elfNN_aarch64_section_from_shdr
a06ea964
NC		 9535
9536#define elf_backend_size_dynamic_sections \
cec5225b 9537 elfNN_aarch64_size_dynamic_sections
a06ea964
NC		 9538
9539#define elf_backend_size_info \
cec5225b 9540 elfNN_aarch64_size_info
a06ea964 9541
68fcca92
JW		 9542#define elf_backend_write_section \
9543 elfNN_aarch64_write_section
9544
d691934d
NC		 9545#define elf_backend_symbol_processing \
9546 elfNN_aarch64_backend_symbol_processing
9547
a06ea964 9548#define elf_backend_can_refcount 1
59c108f7 9549#define elf_backend_can_gc_sections 1
a06ea964
NC		 9550#define elf_backend_plt_readonly 1
9551#define elf_backend_want_got_plt 1
9552#define elf_backend_want_plt_sym 0
5474d94f 9553#define elf_backend_want_dynrelro 1
a06ea964
NC		 9554#define elf_backend_may_use_rel_p 0
9555#define elf_backend_may_use_rela_p 1
9556#define elf_backend_default_use_rela_p 1
07d6d2b8 9557#define elf_backend_rela_normal 1
64f52338 9558#define elf_backend_dtrel_excludes_plt 1
a06ea964 9559#define elf_backend_got_header_size (GOT_ENTRY_SIZE * 3)
c495064d 9560#define elf_backend_default_execstack 0
32f573bc 9561#define elf_backend_extern_protected_data 1
7f784814 9562#define elf_backend_hash_symbol elf_aarch64_hash_symbol
a06ea964 9563
07d6d2b8 9564#undef elf_backend_obj_attrs_section
a06ea964
NC		 9565#define elf_backend_obj_attrs_section ".ARM.attributes"
9566
cec5225b 9567#include "elfNN-target.h"
a75cf613
ES		 9568
9569/* CloudABI support. */
9570
9571#undef TARGET_LITTLE_SYM
9572#define TARGET_LITTLE_SYM aarch64_elfNN_le_cloudabi_vec
9573#undef TARGET_LITTLE_NAME
9574#define TARGET_LITTLE_NAME "elfNN-littleaarch64-cloudabi"
9575#undef TARGET_BIG_SYM
9576#define TARGET_BIG_SYM aarch64_elfNN_be_cloudabi_vec
9577#undef TARGET_BIG_NAME
9578#define TARGET_BIG_NAME "elfNN-bigaarch64-cloudabi"
9579
9580#undef ELF_OSABI
9581#define ELF_OSABI ELFOSABI_CLOUDABI
9582
9583#undef elfNN_bed
9584#define elfNN_bed elfNN_aarch64_cloudabi_bed
9585
9586#include "elfNN-target.h"
GDB Binutils - Deliverables
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