Add support for R_AARCH64_TLSLE_LDST8_TPREL_LO12, etc.
[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 ()
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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 ()
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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 ()
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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 {
f657f8c4
NC
5113 /* If this is a SHT_NOTE section without SHF_ALLOC, treat
5114 STT_GNU_IFUNC symbol as STT_FUNC. */
5115 if (elf_section_type (input_section) == SHT_NOTE)
5116 goto skip_ifunc;
5117
545bc2b3
SN
5118 /* Dynamic relocs are not propagated for SEC_DEBUGGING
5119 sections because such sections are not SEC_ALLOC and
5120 thus ld.so will not process them. */
5121 if ((input_section->flags & SEC_DEBUGGING) != 0)
5122 return bfd_reloc_ok;
5123
5124 if (h->root.root.string)
5125 name = h->root.root.string;
5126 else
5127 name = bfd_elf_sym_name (input_bfd, symtab_hdr, sym, NULL);
5128 _bfd_error_handler
5129 /* xgettext:c-format */
2dcf00ce
AM
5130 (_("%pB(%pA+%#" PRIx64 "): "
5131 "unresolvable %s relocation against symbol `%s'"),
5132 input_bfd, input_section, (uint64_t) rel->r_offset,
5133 howto->name, name);
545bc2b3 5134 bfd_set_error (bfd_error_bad_value);
1d75a8e2 5135 return bfd_reloc_notsupported;
545bc2b3
SN
5136 }
5137 else if (h->plt.offset == (bfd_vma) -1)
5138 goto bad_ifunc_reloc;
1419bbe5
WN
5139
5140 /* STT_GNU_IFUNC symbol must go through PLT. */
5141 plt = globals->root.splt ? globals->root.splt : globals->root.iplt;
5142 value = (plt->output_section->vma + plt->output_offset + h->plt.offset);
5143
5144 switch (bfd_r_type)
5145 {
5146 default:
545bc2b3 5147bad_ifunc_reloc:
1419bbe5
WN
5148 if (h->root.root.string)
5149 name = h->root.root.string;
5150 else
5151 name = bfd_elf_sym_name (input_bfd, symtab_hdr, sym,
5152 NULL);
4eca0228 5153 _bfd_error_handler
695344c0 5154 /* xgettext:c-format */
871b3ab2 5155 (_("%pB: relocation %s against STT_GNU_IFUNC "
1419bbe5
WN
5156 "symbol `%s' isn't handled by %s"), input_bfd,
5157 howto->name, name, __FUNCTION__);
5158 bfd_set_error (bfd_error_bad_value);
1d75a8e2 5159 return bfd_reloc_notsupported;
1419bbe5
WN
5160
5161 case BFD_RELOC_AARCH64_NN:
5162 if (rel->r_addend != 0)
5163 {
5164 if (h->root.root.string)
5165 name = h->root.root.string;
5166 else
5167 name = bfd_elf_sym_name (input_bfd, symtab_hdr,
5168 sym, NULL);
4eca0228 5169 _bfd_error_handler
695344c0 5170 /* xgettext:c-format */
871b3ab2 5171 (_("%pB: relocation %s against STT_GNU_IFUNC "
2dcf00ce
AM
5172 "symbol `%s' has non-zero addend: %" PRId64),
5173 input_bfd, howto->name, name, (int64_t) rel->r_addend);
1419bbe5 5174 bfd_set_error (bfd_error_bad_value);
1d75a8e2 5175 return bfd_reloc_notsupported;
1419bbe5
WN
5176 }
5177
5178 /* Generate dynamic relocation only when there is a
5179 non-GOT reference in a shared object. */
0e1862bb 5180 if (bfd_link_pic (info) && h->non_got_ref)
1419bbe5
WN
5181 {
5182 Elf_Internal_Rela outrel;
5183 asection *sreloc;
5184
5185 /* Need a dynamic relocation to get the real function
5186 address. */
5187 outrel.r_offset = _bfd_elf_section_offset (output_bfd,
5188 info,
5189 input_section,
5190 rel->r_offset);
5191 if (outrel.r_offset == (bfd_vma) -1
5192 || outrel.r_offset == (bfd_vma) -2)
5193 abort ();
5194
5195 outrel.r_offset += (input_section->output_section->vma
5196 + input_section->output_offset);
5197
5198 if (h->dynindx == -1
5199 || h->forced_local
0e1862bb 5200 || bfd_link_executable (info))
1419bbe5
WN
5201 {
5202 /* This symbol is resolved locally. */
5203 outrel.r_info = ELFNN_R_INFO (0, AARCH64_R (IRELATIVE));
5204 outrel.r_addend = (h->root.u.def.value
5205 + h->root.u.def.section->output_section->vma
5206 + h->root.u.def.section->output_offset);
5207 }
5208 else
5209 {
5210 outrel.r_info = ELFNN_R_INFO (h->dynindx, r_type);
5211 outrel.r_addend = 0;
5212 }
5213
5214 sreloc = globals->root.irelifunc;
5215 elf_append_rela (output_bfd, sreloc, &outrel);
5216
5217 /* If this reloc is against an external symbol, we
5218 do not want to fiddle with the addend. Otherwise,
5219 we need to include the symbol value so that it
5220 becomes an addend for the dynamic reloc. For an
5221 internal symbol, we have updated addend. */
5222 return bfd_reloc_ok;
5223 }
5224 /* FALLTHROUGH */
1419bbe5 5225 case BFD_RELOC_AARCH64_CALL26:
ce336788 5226 case BFD_RELOC_AARCH64_JUMP26:
1419bbe5
WN
5227 value = _bfd_aarch64_elf_resolve_relocation (bfd_r_type, place, value,
5228 signed_addend,
5229 weak_undef_p);
5230 return _bfd_aarch64_elf_put_addend (input_bfd, hit_data, bfd_r_type,
5231 howto, value);
1419bbe5
WN
5232 case BFD_RELOC_AARCH64_ADR_GOT_PAGE:
5233 case BFD_RELOC_AARCH64_GOT_LD_PREL19:
7018c030 5234 case BFD_RELOC_AARCH64_LD32_GOTPAGE_LO14:
ce336788 5235 case BFD_RELOC_AARCH64_LD32_GOT_LO12_NC:
99ad26cb 5236 case BFD_RELOC_AARCH64_LD64_GOTPAGE_LO15:
dc8008f5 5237 case BFD_RELOC_AARCH64_MOVW_GOTOFF_G0_NC:
74a1bfe1 5238 case BFD_RELOC_AARCH64_MOVW_GOTOFF_G1:
a2e1db00 5239 case BFD_RELOC_AARCH64_LD64_GOTOFF_LO15:
ce336788 5240 case BFD_RELOC_AARCH64_LD64_GOT_LO12_NC:
1419bbe5
WN
5241 base_got = globals->root.sgot;
5242 off = h->got.offset;
5243
5244 if (base_got == NULL)
5245 abort ();
5246
5247 if (off == (bfd_vma) -1)
5248 {
5249 bfd_vma plt_index;
5250
5251 /* We can't use h->got.offset here to save state, or
5252 even just remember the offset, as finish_dynamic_symbol
5253 would use that as offset into .got. */
5254
5255 if (globals->root.splt != NULL)
5256 {
b1ee0cc4
WN
5257 plt_index = ((h->plt.offset - globals->plt_header_size) /
5258 globals->plt_entry_size);
1419bbe5
WN
5259 off = (plt_index + 3) * GOT_ENTRY_SIZE;
5260 base_got = globals->root.sgotplt;
5261 }
5262 else
5263 {
5264 plt_index = h->plt.offset / globals->plt_entry_size;
5265 off = plt_index * GOT_ENTRY_SIZE;
5266 base_got = globals->root.igotplt;
5267 }
5268
5269 if (h->dynindx == -1
5270 || h->forced_local
5271 || info->symbolic)
5272 {
5273 /* This references the local definition. We must
5274 initialize this entry in the global offset table.
5275 Since the offset must always be a multiple of 8,
5276 we use the least significant bit to record
5277 whether we have initialized it already.
5278
5279 When doing a dynamic link, we create a .rela.got
5280 relocation entry to initialize the value. This
5281 is done in the finish_dynamic_symbol routine. */
5282 if ((off & 1) != 0)
5283 off &= ~1;
5284 else
5285 {
5286 bfd_put_NN (output_bfd, value,
5287 base_got->contents + off);
5288 /* Note that this is harmless as -1 | 1 still is -1. */
5289 h->got.offset |= 1;
5290 }
5291 }
5292 value = (base_got->output_section->vma
5293 + base_got->output_offset + off);
5294 }
5295 else
5296 value = aarch64_calculate_got_entry_vma (h, globals, info,
5297 value, output_bfd,
5298 unresolved_reloc_p);
a0becb89 5299
2aff25ba
JW
5300 if (aarch64_relocation_aginst_gp_p (bfd_r_type))
5301 addend = (globals->root.sgot->output_section->vma
5302 + globals->root.sgot->output_offset);
a0becb89 5303
1419bbe5 5304 value = _bfd_aarch64_elf_resolve_relocation (bfd_r_type, place, value,
99ad26cb 5305 addend, weak_undef_p);
1419bbe5 5306 return _bfd_aarch64_elf_put_addend (input_bfd, hit_data, bfd_r_type, howto, value);
1419bbe5 5307 case BFD_RELOC_AARCH64_ADD_LO12:
ce336788 5308 case BFD_RELOC_AARCH64_ADR_HI21_PCREL:
1419bbe5
WN
5309 break;
5310 }
5311 }
5312
f657f8c4 5313 skip_ifunc:
ddb7fd0f
L
5314 resolved_to_zero = (h != NULL
5315 && UNDEFWEAK_NO_DYNAMIC_RELOC (info, h));
5316
a6bb11b2 5317 switch (bfd_r_type)
a06ea964 5318 {
a6bb11b2 5319 case BFD_RELOC_AARCH64_NONE:
0484b454 5320 case BFD_RELOC_AARCH64_TLSDESC_ADD:
a6bb11b2 5321 case BFD_RELOC_AARCH64_TLSDESC_CALL:
0484b454 5322 case BFD_RELOC_AARCH64_TLSDESC_LDR:
a06ea964
NC
5323 *unresolved_reloc_p = FALSE;
5324 return bfd_reloc_ok;
5325
a6bb11b2 5326 case BFD_RELOC_AARCH64_NN:
a06ea964
NC
5327
5328 /* When generating a shared object or relocatable executable, these
07d6d2b8
AM
5329 relocations are copied into the output file to be resolved at
5330 run time. */
6353d82b
JW
5331 if (((bfd_link_pic (info)
5332 || globals->root.is_relocatable_executable)
5333 && (input_section->flags & SEC_ALLOC)
5334 && (h == NULL
ddb7fd0f
L
5335 || (ELF_ST_VISIBILITY (h->other) == STV_DEFAULT
5336 && !resolved_to_zero)
6353d82b
JW
5337 || h->root.type != bfd_link_hash_undefweak))
5338 /* Or we are creating an executable, we may need to keep relocations
5339 for symbols satisfied by a dynamic library if we manage to avoid
5340 copy relocs for the symbol. */
5341 || (ELIMINATE_COPY_RELOCS
5342 && !bfd_link_pic (info)
5343 && h != NULL
5344 && (input_section->flags & SEC_ALLOC)
5345 && h->dynindx != -1
5346 && !h->non_got_ref
5347 && ((h->def_dynamic
5348 && !h->def_regular)
5349 || h->root.type == bfd_link_hash_undefweak
5350 || h->root.type == bfd_link_hash_undefined)))
a06ea964
NC
5351 {
5352 Elf_Internal_Rela outrel;
5353 bfd_byte *loc;
5354 bfd_boolean skip, relocate;
5355 asection *sreloc;
5356
5357 *unresolved_reloc_p = FALSE;
5358
a06ea964
NC
5359 skip = FALSE;
5360 relocate = FALSE;
5361
5362 outrel.r_addend = signed_addend;
5363 outrel.r_offset =
5364 _bfd_elf_section_offset (output_bfd, info, input_section,
5365 rel->r_offset);
5366 if (outrel.r_offset == (bfd_vma) - 1)
5367 skip = TRUE;
5368 else if (outrel.r_offset == (bfd_vma) - 2)
5369 {
5370 skip = TRUE;
5371 relocate = TRUE;
5372 }
0c1ded8d
RL
5373 else if (abs_symbol_p)
5374 {
5375 /* Local absolute symbol. */
5376 skip = (h->forced_local || (h->dynindx == -1));
5377 relocate = skip;
5378 }
a06ea964
NC
5379
5380 outrel.r_offset += (input_section->output_section->vma
5381 + input_section->output_offset);
5382
5383 if (skip)
5384 memset (&outrel, 0, sizeof outrel);
5385 else if (h != NULL
5386 && h->dynindx != -1
0e1862bb 5387 && (!bfd_link_pic (info)
0c1ded8d 5388 || !(bfd_link_pie (info) || SYMBOLIC_BIND (info, h))
0e1862bb 5389 || !h->def_regular))
cec5225b 5390 outrel.r_info = ELFNN_R_INFO (h->dynindx, r_type);
a06ea964
NC
5391 else
5392 {
5393 int symbol;
5394
5395 /* On SVR4-ish systems, the dynamic loader cannot
5396 relocate the text and data segments independently,
5397 so the symbol does not matter. */
5398 symbol = 0;
1f56df9d 5399 relocate = globals->no_apply_dynamic_relocs ? FALSE : TRUE;
a6bb11b2 5400 outrel.r_info = ELFNN_R_INFO (symbol, AARCH64_R (RELATIVE));
a06ea964
NC
5401 outrel.r_addend += value;
5402 }
5403
1419bbe5
WN
5404 sreloc = elf_section_data (input_section)->sreloc;
5405 if (sreloc == NULL || sreloc->contents == NULL)
5406 return bfd_reloc_notsupported;
5407
5408 loc = sreloc->contents + sreloc->reloc_count++ * RELOC_SIZE (globals);
cec5225b 5409 bfd_elfNN_swap_reloca_out (output_bfd, &outrel, loc);
a06ea964 5410
1419bbe5 5411 if (sreloc->reloc_count * RELOC_SIZE (globals) > sreloc->size)
a06ea964
NC
5412 {
5413 /* Sanity to check that we have previously allocated
5414 sufficient space in the relocation section for the
5415 number of relocations we actually want to emit. */
5416 abort ();
5417 }
5418
5419 /* If this reloc is against an external symbol, we do not want to
5420 fiddle with the addend. Otherwise, we need to include the symbol
5421 value so that it becomes an addend for the dynamic reloc. */
5422 if (!relocate)
5423 return bfd_reloc_ok;
5424
5425 return _bfd_final_link_relocate (howto, input_bfd, input_section,
5426 contents, rel->r_offset, value,
5427 signed_addend);
5428 }
5429 else
5430 value += signed_addend;
5431 break;
5432
a6bb11b2 5433 case BFD_RELOC_AARCH64_CALL26:
ce336788 5434 case BFD_RELOC_AARCH64_JUMP26:
a06ea964
NC
5435 {
5436 asection *splt = globals->root.splt;
5437 bfd_boolean via_plt_p =
5438 splt != NULL && h != NULL && h->plt.offset != (bfd_vma) - 1;
5439
5440 /* A call to an undefined weak symbol is converted to a jump to
5441 the next instruction unless a PLT entry will be created.
5442 The jump to the next instruction is optimized as a NOP.
5443 Do the same for local undefined symbols. */
5444 if (weak_undef_p && ! via_plt_p)
5445 {
5446 bfd_putl32 (INSN_NOP, hit_data);
5447 return bfd_reloc_ok;
5448 }
5449
5450 /* If the call goes through a PLT entry, make sure to
5451 check distance to the right destination address. */
5452 if (via_plt_p)
07f9ddfe
JW
5453 value = (splt->output_section->vma
5454 + splt->output_offset + h->plt.offset);
5455
5456 /* Check if a stub has to be inserted because the destination
5457 is too far away. */
5458 struct elf_aarch64_stub_hash_entry *stub_entry = NULL;
2f340668
JW
5459
5460 /* If the branch destination is directed to plt stub, "value" will be
5461 the final destination, otherwise we should plus signed_addend, it may
5462 contain non-zero value, for example call to local function symbol
5463 which are turned into "sec_sym + sec_off", and sec_off is kept in
5464 signed_addend. */
5465 if (! aarch64_valid_branch_p (via_plt_p ? value : value + signed_addend,
5466 place))
07f9ddfe
JW
5467 /* The target is out of reach, so redirect the branch to
5468 the local stub for this function. */
5469 stub_entry = elfNN_aarch64_get_stub_entry (input_section, sym_sec, h,
5470 rel, globals);
5471 if (stub_entry != NULL)
2f340668
JW
5472 {
5473 value = (stub_entry->stub_offset
5474 + stub_entry->stub_sec->output_offset
5475 + stub_entry->stub_sec->output_section->vma);
5476
5477 /* We have redirected the destination to stub entry address,
5478 so ignore any addend record in the original rela entry. */
5479 signed_addend = 0;
5480 }
a06ea964 5481 }
caed7120
YZ
5482 value = _bfd_aarch64_elf_resolve_relocation (bfd_r_type, place, value,
5483 signed_addend, weak_undef_p);
07f9ddfe 5484 *unresolved_reloc_p = FALSE;
a06ea964
NC
5485 break;
5486
dcbd20eb
JW
5487 case BFD_RELOC_AARCH64_16_PCREL:
5488 case BFD_RELOC_AARCH64_32_PCREL:
5489 case BFD_RELOC_AARCH64_64_PCREL:
ce336788
JW
5490 case BFD_RELOC_AARCH64_ADR_HI21_NC_PCREL:
5491 case BFD_RELOC_AARCH64_ADR_HI21_PCREL:
5492 case BFD_RELOC_AARCH64_ADR_LO21_PCREL:
5493 case BFD_RELOC_AARCH64_LD_LO19_PCREL:
1daf502a
RL
5494 case BFD_RELOC_AARCH64_MOVW_PREL_G0:
5495 case BFD_RELOC_AARCH64_MOVW_PREL_G0_NC:
5496 case BFD_RELOC_AARCH64_MOVW_PREL_G1:
5497 case BFD_RELOC_AARCH64_MOVW_PREL_G1_NC:
5498 case BFD_RELOC_AARCH64_MOVW_PREL_G2:
5499 case BFD_RELOC_AARCH64_MOVW_PREL_G2_NC:
5500 case BFD_RELOC_AARCH64_MOVW_PREL_G3:
0e1862bb 5501 if (bfd_link_pic (info)
dcbd20eb
JW
5502 && (input_section->flags & SEC_ALLOC) != 0
5503 && (input_section->flags & SEC_READONLY) != 0
d68f1976 5504 && !SYMBOL_REFERENCES_LOCAL (info, h))
dcbd20eb
JW
5505 {
5506 int howto_index = bfd_r_type - BFD_RELOC_AARCH64_RELOC_START;
5507
4eca0228 5508 _bfd_error_handler
695344c0 5509 /* xgettext:c-format */
871b3ab2 5510 (_("%pB: relocation %s against symbol `%s' which may bind "
d68f1976
JW
5511 "externally can not be used when making a shared object; "
5512 "recompile with -fPIC"),
dcbd20eb
JW
5513 input_bfd, elfNN_aarch64_howto_table[howto_index].name,
5514 h->root.root.string);
5515 bfd_set_error (bfd_error_bad_value);
1d75a8e2 5516 return bfd_reloc_notsupported;
dcbd20eb 5517 }
1a0670f3 5518 /* Fall through. */
dcbd20eb 5519
a6bb11b2 5520 case BFD_RELOC_AARCH64_16:
92d77487
RL
5521#if ARCH_SIZE == 64
5522 case BFD_RELOC_AARCH64_32:
5523#endif
a6bb11b2 5524 case BFD_RELOC_AARCH64_ADD_LO12:
a6bb11b2 5525 case BFD_RELOC_AARCH64_BRANCH19:
ce336788 5526 case BFD_RELOC_AARCH64_LDST128_LO12:
a6bb11b2
YZ
5527 case BFD_RELOC_AARCH64_LDST16_LO12:
5528 case BFD_RELOC_AARCH64_LDST32_LO12:
5529 case BFD_RELOC_AARCH64_LDST64_LO12:
ce336788 5530 case BFD_RELOC_AARCH64_LDST8_LO12:
a6bb11b2
YZ
5531 case BFD_RELOC_AARCH64_MOVW_G0:
5532 case BFD_RELOC_AARCH64_MOVW_G0_NC:
ce336788 5533 case BFD_RELOC_AARCH64_MOVW_G0_S:
a6bb11b2
YZ
5534 case BFD_RELOC_AARCH64_MOVW_G1:
5535 case BFD_RELOC_AARCH64_MOVW_G1_NC:
ce336788 5536 case BFD_RELOC_AARCH64_MOVW_G1_S:
a6bb11b2
YZ
5537 case BFD_RELOC_AARCH64_MOVW_G2:
5538 case BFD_RELOC_AARCH64_MOVW_G2_NC:
ce336788 5539 case BFD_RELOC_AARCH64_MOVW_G2_S:
a6bb11b2 5540 case BFD_RELOC_AARCH64_MOVW_G3:
a6bb11b2 5541 case BFD_RELOC_AARCH64_TSTBR14:
caed7120
YZ
5542 value = _bfd_aarch64_elf_resolve_relocation (bfd_r_type, place, value,
5543 signed_addend, weak_undef_p);
a06ea964
NC
5544 break;
5545
a6bb11b2
YZ
5546 case BFD_RELOC_AARCH64_ADR_GOT_PAGE:
5547 case BFD_RELOC_AARCH64_GOT_LD_PREL19:
7018c030 5548 case BFD_RELOC_AARCH64_LD32_GOTPAGE_LO14:
ce336788 5549 case BFD_RELOC_AARCH64_LD32_GOT_LO12_NC:
99ad26cb 5550 case BFD_RELOC_AARCH64_LD64_GOTPAGE_LO15:
ce336788 5551 case BFD_RELOC_AARCH64_LD64_GOT_LO12_NC:
2aff25ba
JW
5552 case BFD_RELOC_AARCH64_LD64_GOTOFF_LO15:
5553 case BFD_RELOC_AARCH64_MOVW_GOTOFF_G0_NC:
5554 case BFD_RELOC_AARCH64_MOVW_GOTOFF_G1:
a06ea964
NC
5555 if (globals->root.sgot == NULL)
5556 BFD_ASSERT (h != NULL);
5557
ff07562f 5558 relative_reloc = FALSE;
a06ea964
NC
5559 if (h != NULL)
5560 {
99ad26cb 5561 bfd_vma addend = 0;
ff07562f
JW
5562
5563 /* If a symbol is not dynamic and is not undefined weak, bind it
5564 locally and generate a RELATIVE relocation under PIC mode.
5565
5566 NOTE: one symbol may be referenced by several relocations, we
5567 should only generate one RELATIVE relocation for that symbol.
5568 Therefore, check GOT offset mark first. */
5569 if (h->dynindx == -1
5570 && !h->forced_local
5571 && h->root.type != bfd_link_hash_undefweak
5572 && bfd_link_pic (info)
5573 && !symbol_got_offset_mark_p (input_bfd, h, r_symndx))
5574 relative_reloc = TRUE;
5575
a06ea964
NC
5576 value = aarch64_calculate_got_entry_vma (h, globals, info, value,
5577 output_bfd,
5578 unresolved_reloc_p);
ff07562f
JW
5579 /* Record the GOT entry address which will be used when generating
5580 RELATIVE relocation. */
5581 if (relative_reloc)
5582 got_entry_addr = value;
5583
2aff25ba 5584 if (aarch64_relocation_aginst_gp_p (bfd_r_type))
99ad26cb
JW
5585 addend = (globals->root.sgot->output_section->vma
5586 + globals->root.sgot->output_offset);
caed7120 5587 value = _bfd_aarch64_elf_resolve_relocation (bfd_r_type, place, value,
99ad26cb 5588 addend, weak_undef_p);
a06ea964 5589 }
b53b1bed
JW
5590 else
5591 {
99ad26cb 5592 bfd_vma addend = 0;
b53b1bed
JW
5593 struct elf_aarch64_local_symbol *locals
5594 = elf_aarch64_locals (input_bfd);
5595
5596 if (locals == NULL)
5597 {
5598 int howto_index = bfd_r_type - BFD_RELOC_AARCH64_RELOC_START;
4eca0228 5599 _bfd_error_handler
695344c0 5600 /* xgettext:c-format */
90b6238f 5601 (_("%pB: local symbol descriptor table be NULL when applying "
b53b1bed
JW
5602 "relocation %s against local symbol"),
5603 input_bfd, elfNN_aarch64_howto_table[howto_index].name);
5604 abort ();
5605 }
5606
5607 off = symbol_got_offset (input_bfd, h, r_symndx);
5608 base_got = globals->root.sgot;
ff07562f
JW
5609 got_entry_addr = (base_got->output_section->vma
5610 + base_got->output_offset + off);
b53b1bed
JW
5611
5612 if (!symbol_got_offset_mark_p (input_bfd, h, r_symndx))
5613 {
5614 bfd_put_64 (output_bfd, value, base_got->contents + off);
5615
ff07562f
JW
5616 /* For local symbol, we have done absolute relocation in static
5617 linking stage. While for shared library, we need to update the
5618 content of GOT entry according to the shared object's runtime
5619 base address. So, we need to generate a R_AARCH64_RELATIVE reloc
5620 for dynamic linker. */
0e1862bb 5621 if (bfd_link_pic (info))
ff07562f 5622 relative_reloc = TRUE;
b53b1bed
JW
5623
5624 symbol_got_offset_mark (input_bfd, h, r_symndx);
5625 }
5626
5627 /* Update the relocation value to GOT entry addr as we have transformed
5628 the direct data access into indirect data access through GOT. */
5629 value = got_entry_addr;
99ad26cb 5630
2aff25ba 5631 if (aarch64_relocation_aginst_gp_p (bfd_r_type))
99ad26cb
JW
5632 addend = base_got->output_section->vma + base_got->output_offset;
5633
5634 value = _bfd_aarch64_elf_resolve_relocation (bfd_r_type, place, value,
5635 addend, weak_undef_p);
b53b1bed 5636 }
ff07562f
JW
5637
5638 if (relative_reloc)
5639 {
5640 asection *s;
5641 Elf_Internal_Rela outrel;
5642
5643 s = globals->root.srelgot;
5644 if (s == NULL)
5645 abort ();
5646
5647 outrel.r_offset = got_entry_addr;
5648 outrel.r_info = ELFNN_R_INFO (0, AARCH64_R (RELATIVE));
5649 outrel.r_addend = orig_value;
5650 elf_append_rela (output_bfd, s, &outrel);
5651 }
a2e1db00
RL
5652 break;
5653
ce336788 5654 case BFD_RELOC_AARCH64_TLSGD_ADD_LO12_NC:
a6bb11b2 5655 case BFD_RELOC_AARCH64_TLSGD_ADR_PAGE21:
3c12b054 5656 case BFD_RELOC_AARCH64_TLSGD_ADR_PREL21:
a6bb11b2 5657 case BFD_RELOC_AARCH64_TLSIE_ADR_GOTTPREL_PAGE21:
a6bb11b2 5658 case BFD_RELOC_AARCH64_TLSIE_LD32_GOTTPREL_LO12_NC:
ce336788 5659 case BFD_RELOC_AARCH64_TLSIE_LD64_GOTTPREL_LO12_NC:
043bf05a 5660 case BFD_RELOC_AARCH64_TLSIE_LD_GOTTPREL_PREL19:
73f925cc 5661 case BFD_RELOC_AARCH64_TLSLD_ADD_LO12_NC:
f69e4920 5662 case BFD_RELOC_AARCH64_TLSLD_ADR_PAGE21:
77a69ff8 5663 case BFD_RELOC_AARCH64_TLSLD_ADR_PREL21:
a06ea964
NC
5664 if (globals->root.sgot == NULL)
5665 return bfd_reloc_notsupported;
5666
5667 value = (symbol_got_offset (input_bfd, h, r_symndx)
5668 + globals->root.sgot->output_section->vma
f44a1f8e 5669 + globals->root.sgot->output_offset);
a06ea964 5670
caed7120
YZ
5671 value = _bfd_aarch64_elf_resolve_relocation (bfd_r_type, place, value,
5672 0, weak_undef_p);
a06ea964
NC
5673 *unresolved_reloc_p = FALSE;
5674 break;
5675
7ba7cfe4 5676 case BFD_RELOC_AARCH64_TLSGD_MOVW_G0_NC:
94facae3 5677 case BFD_RELOC_AARCH64_TLSGD_MOVW_G1:
3b957e5b
RL
5678 case BFD_RELOC_AARCH64_TLSIE_MOVW_GOTTPREL_G0_NC:
5679 case BFD_RELOC_AARCH64_TLSIE_MOVW_GOTTPREL_G1:
94facae3
RL
5680 if (globals->root.sgot == NULL)
5681 return bfd_reloc_notsupported;
5682
5683 value = symbol_got_offset (input_bfd, h, r_symndx);
5684 value = _bfd_aarch64_elf_resolve_relocation (bfd_r_type, place, value,
5685 0, weak_undef_p);
5686 *unresolved_reloc_p = FALSE;
5687 break;
5688
6ffe9a1b 5689 case BFD_RELOC_AARCH64_TLSLD_ADD_DTPREL_HI12:
40fbed84 5690 case BFD_RELOC_AARCH64_TLSLD_ADD_DTPREL_LO12:
753999c1 5691 case BFD_RELOC_AARCH64_TLSLD_ADD_DTPREL_LO12_NC:
07c9aa07
JW
5692 case BFD_RELOC_AARCH64_TLSLD_LDST16_DTPREL_LO12:
5693 case BFD_RELOC_AARCH64_TLSLD_LDST16_DTPREL_LO12_NC:
5694 case BFD_RELOC_AARCH64_TLSLD_LDST32_DTPREL_LO12:
5695 case BFD_RELOC_AARCH64_TLSLD_LDST32_DTPREL_LO12_NC:
5696 case BFD_RELOC_AARCH64_TLSLD_LDST64_DTPREL_LO12:
5697 case BFD_RELOC_AARCH64_TLSLD_LDST64_DTPREL_LO12_NC:
5698 case BFD_RELOC_AARCH64_TLSLD_LDST8_DTPREL_LO12:
5699 case BFD_RELOC_AARCH64_TLSLD_LDST8_DTPREL_LO12_NC:
6ffe9a1b
JW
5700 case BFD_RELOC_AARCH64_TLSLD_MOVW_DTPREL_G0:
5701 case BFD_RELOC_AARCH64_TLSLD_MOVW_DTPREL_G0_NC:
5702 case BFD_RELOC_AARCH64_TLSLD_MOVW_DTPREL_G1:
5703 case BFD_RELOC_AARCH64_TLSLD_MOVW_DTPREL_G1_NC:
5704 case BFD_RELOC_AARCH64_TLSLD_MOVW_DTPREL_G2:
40fbed84
JW
5705 value = _bfd_aarch64_elf_resolve_relocation (bfd_r_type, place, value,
5706 signed_addend - dtpoff_base (info),
5707 weak_undef_p);
5708 break;
5709
a6bb11b2
YZ
5710 case BFD_RELOC_AARCH64_TLSLE_ADD_TPREL_HI12:
5711 case BFD_RELOC_AARCH64_TLSLE_ADD_TPREL_LO12:
5712 case BFD_RELOC_AARCH64_TLSLE_ADD_TPREL_LO12_NC:
5713 case BFD_RELOC_AARCH64_TLSLE_MOVW_TPREL_G0:
5714 case BFD_RELOC_AARCH64_TLSLE_MOVW_TPREL_G0_NC:
5715 case BFD_RELOC_AARCH64_TLSLE_MOVW_TPREL_G1:
5716 case BFD_RELOC_AARCH64_TLSLE_MOVW_TPREL_G1_NC:
5717 case BFD_RELOC_AARCH64_TLSLE_MOVW_TPREL_G2:
caed7120
YZ
5718 value = _bfd_aarch64_elf_resolve_relocation (bfd_r_type, place, value,
5719 signed_addend - tpoff_base (info),
5720 weak_undef_p);
a06ea964
NC
5721 *unresolved_reloc_p = FALSE;
5722 break;
5723
f955cccf 5724 case BFD_RELOC_AARCH64_TLSDESC_ADD_LO12:
a6bb11b2 5725 case BFD_RELOC_AARCH64_TLSDESC_ADR_PAGE21:
389b8029 5726 case BFD_RELOC_AARCH64_TLSDESC_ADR_PREL21:
a6bb11b2 5727 case BFD_RELOC_AARCH64_TLSDESC_LD32_LO12_NC:
f955cccf 5728 case BFD_RELOC_AARCH64_TLSDESC_LD64_LO12:
1ada945d 5729 case BFD_RELOC_AARCH64_TLSDESC_LD_PREL19:
a06ea964
NC
5730 if (globals->root.sgot == NULL)
5731 return bfd_reloc_notsupported;
a06ea964
NC
5732 value = (symbol_tlsdesc_got_offset (input_bfd, h, r_symndx)
5733 + globals->root.sgotplt->output_section->vma
f44a1f8e 5734 + globals->root.sgotplt->output_offset
a06ea964
NC
5735 + globals->sgotplt_jump_table_size);
5736
caed7120
YZ
5737 value = _bfd_aarch64_elf_resolve_relocation (bfd_r_type, place, value,
5738 0, weak_undef_p);
a06ea964
NC
5739 *unresolved_reloc_p = FALSE;
5740 break;
5741
0484b454
RL
5742 case BFD_RELOC_AARCH64_TLSDESC_OFF_G0_NC:
5743 case BFD_RELOC_AARCH64_TLSDESC_OFF_G1:
5744 if (globals->root.sgot == NULL)
5745 return bfd_reloc_notsupported;
5746
5747 value = (symbol_tlsdesc_got_offset (input_bfd, h, r_symndx)
5748 + globals->root.sgotplt->output_section->vma
5749 + globals->root.sgotplt->output_offset
5750 + globals->sgotplt_jump_table_size);
5751
5752 value -= (globals->root.sgot->output_section->vma
5753 + globals->root.sgot->output_offset);
5754
5755 value = _bfd_aarch64_elf_resolve_relocation (bfd_r_type, place, value,
5756 0, weak_undef_p);
5757 *unresolved_reloc_p = FALSE;
5758 break;
5759
a06ea964
NC
5760 default:
5761 return bfd_reloc_notsupported;
5762 }
5763
5764 if (saved_addend)
5765 *saved_addend = value;
5766
5767 /* Only apply the final relocation in a sequence. */
5768 if (save_addend)
5769 return bfd_reloc_continue;
5770
caed7120
YZ
5771 return _bfd_aarch64_elf_put_addend (input_bfd, hit_data, bfd_r_type,
5772 howto, value);
a06ea964
NC
5773}
5774
2d0ca824
YN
5775/* LP64 and ILP32 operates on x- and w-registers respectively.
5776 Next definitions take into account the difference between
5777 corresponding machine codes. R means x-register if the target
5778 arch is LP64, and w-register if the target is ILP32. */
5779
5780#if ARCH_SIZE == 64
5781# define add_R0_R0 (0x91000000)
5782# define add_R0_R0_R1 (0x8b000020)
5783# define add_R0_R1 (0x91400020)
5784# define ldr_R0 (0x58000000)
5785# define ldr_R0_mask(i) (i & 0xffffffe0)
5786# define ldr_R0_x0 (0xf9400000)
5787# define ldr_hw_R0 (0xf2a00000)
5788# define movk_R0 (0xf2800000)
5789# define movz_R0 (0xd2a00000)
5790# define movz_hw_R0 (0xd2c00000)
5791#else /*ARCH_SIZE == 32 */
5792# define add_R0_R0 (0x11000000)
5793# define add_R0_R0_R1 (0x0b000020)
5794# define add_R0_R1 (0x11400020)
5795# define ldr_R0 (0x18000000)
5796# define ldr_R0_mask(i) (i & 0xbfffffe0)
5797# define ldr_R0_x0 (0xb9400000)
5798# define ldr_hw_R0 (0x72a00000)
5799# define movk_R0 (0x72800000)
5800# define movz_R0 (0x52a00000)
5801# define movz_hw_R0 (0x52c00000)
5802#endif
5803
a06ea964
NC
5804/* Handle TLS relaxations. Relaxing is possible for symbols that use
5805 R_AARCH64_TLSDESC_ADR_{PAGE, LD64_LO12_NC, ADD_LO12_NC} during a static
5806 link.
5807
5808 Return bfd_reloc_ok if we're done, bfd_reloc_continue if the caller
5809 is to then call final_link_relocate. Return other values in the
5810 case of error. */
5811
5812static bfd_reloc_status_type
cec5225b 5813elfNN_aarch64_tls_relax (struct elf_aarch64_link_hash_table *globals,
a06ea964 5814 bfd *input_bfd, bfd_byte *contents,
06d2788c 5815 Elf_Internal_Rela *rel, struct elf_link_hash_entry *h)
a06ea964
NC
5816{
5817 bfd_boolean is_local = h == NULL;
cec5225b 5818 unsigned int r_type = ELFNN_R_TYPE (rel->r_info);
a06ea964
NC
5819 unsigned long insn;
5820
5821 BFD_ASSERT (globals && input_bfd && contents && rel);
5822
0aa13fee 5823 switch (elfNN_aarch64_bfd_reloc_from_type (input_bfd, r_type))
a06ea964 5824 {
a6bb11b2 5825 case BFD_RELOC_AARCH64_TLSDESC_ADR_PAGE21:
ce336788 5826 case BFD_RELOC_AARCH64_TLSGD_ADR_PAGE21:
a06ea964
NC
5827 if (is_local)
5828 {
5829 /* GD->LE relaxation:
2d0ca824 5830 adrp x0, :tlsgd:var => movz R0, :tprel_g1:var
a06ea964 5831 or
2d0ca824
YN
5832 adrp x0, :tlsdesc:var => movz R0, :tprel_g1:var
5833
5834 Where R is x for LP64, and w for ILP32. */
5835 bfd_putl32 (movz_R0, contents + rel->r_offset);
a06ea964
NC
5836 return bfd_reloc_continue;
5837 }
5838 else
5839 {
5840 /* GD->IE relaxation:
5841 adrp x0, :tlsgd:var => adrp x0, :gottprel:var
5842 or
5843 adrp x0, :tlsdesc:var => adrp x0, :gottprel:var
5844 */
a06ea964
NC
5845 return bfd_reloc_continue;
5846 }
5847
389b8029
MS
5848 case BFD_RELOC_AARCH64_TLSDESC_ADR_PREL21:
5849 BFD_ASSERT (0);
5850 break;
5851
1ada945d
MS
5852 case BFD_RELOC_AARCH64_TLSDESC_LD_PREL19:
5853 if (is_local)
5854 {
5855 /* Tiny TLSDESC->LE relaxation:
07d6d2b8
AM
5856 ldr x1, :tlsdesc:var => movz R0, #:tprel_g1:var
5857 adr x0, :tlsdesc:var => movk R0, #:tprel_g0_nc:var
1ada945d 5858 .tlsdesccall var
07d6d2b8 5859 blr x1 => nop
2d0ca824
YN
5860
5861 Where R is x for LP64, and w for ILP32. */
1ada945d
MS
5862 BFD_ASSERT (ELFNN_R_TYPE (rel[1].r_info) == AARCH64_R (TLSDESC_ADR_PREL21));
5863 BFD_ASSERT (ELFNN_R_TYPE (rel[2].r_info) == AARCH64_R (TLSDESC_CALL));
5864
5865 rel[1].r_info = ELFNN_R_INFO (ELFNN_R_SYM (rel->r_info),
5866 AARCH64_R (TLSLE_MOVW_TPREL_G0_NC));
5867 rel[2].r_info = ELFNN_R_INFO (STN_UNDEF, R_AARCH64_NONE);
5868
2d0ca824
YN
5869 bfd_putl32 (movz_R0, contents + rel->r_offset);
5870 bfd_putl32 (movk_R0, contents + rel->r_offset + 4);
1ada945d
MS
5871 bfd_putl32 (INSN_NOP, contents + rel->r_offset + 8);
5872 return bfd_reloc_continue;
5873 }
5874 else
5875 {
5876 /* Tiny TLSDESC->IE relaxation:
07d6d2b8
AM
5877 ldr x1, :tlsdesc:var => ldr x0, :gottprel:var
5878 adr x0, :tlsdesc:var => nop
1ada945d 5879 .tlsdesccall var
07d6d2b8 5880 blr x1 => nop
1ada945d
MS
5881 */
5882 BFD_ASSERT (ELFNN_R_TYPE (rel[1].r_info) == AARCH64_R (TLSDESC_ADR_PREL21));
5883 BFD_ASSERT (ELFNN_R_TYPE (rel[2].r_info) == AARCH64_R (TLSDESC_CALL));
5884
5885 rel[1].r_info = ELFNN_R_INFO (STN_UNDEF, R_AARCH64_NONE);
5886 rel[2].r_info = ELFNN_R_INFO (STN_UNDEF, R_AARCH64_NONE);
5887
2d0ca824 5888 bfd_putl32 (ldr_R0, contents + rel->r_offset);
1ada945d
MS
5889 bfd_putl32 (INSN_NOP, contents + rel->r_offset + 4);
5890 bfd_putl32 (INSN_NOP, contents + rel->r_offset + 8);
5891 return bfd_reloc_continue;
5892 }
5893
3c12b054
MS
5894 case BFD_RELOC_AARCH64_TLSGD_ADR_PREL21:
5895 if (is_local)
5896 {
5897 /* Tiny GD->LE relaxation:
07d6d2b8
AM
5898 adr x0, :tlsgd:var => mrs x1, tpidr_el0
5899 bl __tls_get_addr => add R0, R1, #:tprel_hi12:x, lsl #12
5900 nop => add R0, R0, #:tprel_lo12_nc:x
2d0ca824
YN
5901
5902 Where R is x for LP64, and x for Ilp32. */
3c12b054
MS
5903
5904 /* First kill the tls_get_addr reloc on the bl instruction. */
5905 BFD_ASSERT (rel->r_offset + 4 == rel[1].r_offset);
5906
5907 bfd_putl32 (0xd53bd041, contents + rel->r_offset + 0);
2d0ca824
YN
5908 bfd_putl32 (add_R0_R1, contents + rel->r_offset + 4);
5909 bfd_putl32 (add_R0_R0, contents + rel->r_offset + 8);
3c12b054
MS
5910
5911 rel[1].r_info = ELFNN_R_INFO (ELFNN_R_SYM (rel->r_info),
5912 AARCH64_R (TLSLE_ADD_TPREL_LO12_NC));
5913 rel[1].r_offset = rel->r_offset + 8;
5914
5915 /* Move the current relocation to the second instruction in
5916 the sequence. */
5917 rel->r_offset += 4;
5918 rel->r_info = ELFNN_R_INFO (ELFNN_R_SYM (rel->r_info),
5919 AARCH64_R (TLSLE_ADD_TPREL_HI12));
5920 return bfd_reloc_continue;
5921 }
5922 else
5923 {
5924 /* Tiny GD->IE relaxation:
07d6d2b8
AM
5925 adr x0, :tlsgd:var => ldr R0, :gottprel:var
5926 bl __tls_get_addr => mrs x1, tpidr_el0
5927 nop => add R0, R0, R1
2d0ca824
YN
5928
5929 Where R is x for LP64, and w for Ilp32. */
3c12b054
MS
5930
5931 /* First kill the tls_get_addr reloc on the bl instruction. */
5932 BFD_ASSERT (rel->r_offset + 4 == rel[1].r_offset);
5933 rel[1].r_info = ELFNN_R_INFO (STN_UNDEF, R_AARCH64_NONE);
5934
2d0ca824 5935 bfd_putl32 (ldr_R0, contents + rel->r_offset);
3c12b054 5936 bfd_putl32 (0xd53bd041, contents + rel->r_offset + 4);
2d0ca824 5937 bfd_putl32 (add_R0_R0_R1, contents + rel->r_offset + 8);
3c12b054
MS
5938 return bfd_reloc_continue;
5939 }
5940
ac734732
RL
5941#if ARCH_SIZE == 64
5942 case BFD_RELOC_AARCH64_TLSGD_MOVW_G1:
5943 BFD_ASSERT (ELFNN_R_TYPE (rel[1].r_info) == AARCH64_R (TLSGD_MOVW_G0_NC));
5944 BFD_ASSERT (rel->r_offset + 12 == rel[2].r_offset);
5945 BFD_ASSERT (ELFNN_R_TYPE (rel[2].r_info) == AARCH64_R (CALL26));
5946
5947 if (is_local)
5948 {
5949 /* Large GD->LE relaxation:
07d6d2b8 5950 movz x0, #:tlsgd_g1:var => movz x0, #:tprel_g2:var, lsl #32
ac734732 5951 movk x0, #:tlsgd_g0_nc:var => movk x0, #:tprel_g1_nc:var, lsl #16
07d6d2b8
AM
5952 add x0, gp, x0 => movk x0, #:tprel_g0_nc:var
5953 bl __tls_get_addr => mrs x1, tpidr_el0
5954 nop => add x0, x0, x1
ac734732
RL
5955 */
5956 rel[2].r_info = ELFNN_R_INFO (ELFNN_R_SYM (rel->r_info),
5957 AARCH64_R (TLSLE_MOVW_TPREL_G0_NC));
5958 rel[2].r_offset = rel->r_offset + 8;
5959
2d0ca824
YN
5960 bfd_putl32 (movz_hw_R0, contents + rel->r_offset + 0);
5961 bfd_putl32 (ldr_hw_R0, contents + rel->r_offset + 4);
5962 bfd_putl32 (movk_R0, contents + rel->r_offset + 8);
ac734732 5963 bfd_putl32 (0xd53bd041, contents + rel->r_offset + 12);
2d0ca824 5964 bfd_putl32 (add_R0_R0_R1, contents + rel->r_offset + 16);
ac734732
RL
5965 }
5966 else
5967 {
5968 /* Large GD->IE relaxation:
07d6d2b8 5969 movz x0, #:tlsgd_g1:var => movz x0, #:gottprel_g1:var, lsl #16
ac734732 5970 movk x0, #:tlsgd_g0_nc:var => movk x0, #:gottprel_g0_nc:var
07d6d2b8
AM
5971 add x0, gp, x0 => ldr x0, [gp, x0]
5972 bl __tls_get_addr => mrs x1, tpidr_el0
5973 nop => add x0, x0, x1
ac734732
RL
5974 */
5975 rel[2].r_info = ELFNN_R_INFO (STN_UNDEF, R_AARCH64_NONE);
5976 bfd_putl32 (0xd2a80000, contents + rel->r_offset + 0);
2d0ca824 5977 bfd_putl32 (ldr_R0, contents + rel->r_offset + 8);
ac734732 5978 bfd_putl32 (0xd53bd041, contents + rel->r_offset + 12);
2d0ca824 5979 bfd_putl32 (add_R0_R0_R1, contents + rel->r_offset + 16);
ac734732
RL
5980 }
5981 return bfd_reloc_continue;
5982
5983 case BFD_RELOC_AARCH64_TLSGD_MOVW_G0_NC:
5984 return bfd_reloc_continue;
5985#endif
5986
043bf05a
MS
5987 case BFD_RELOC_AARCH64_TLSIE_LD_GOTTPREL_PREL19:
5988 return bfd_reloc_continue;
5989
a6bb11b2 5990 case BFD_RELOC_AARCH64_TLSDESC_LDNN_LO12_NC:
a06ea964
NC
5991 if (is_local)
5992 {
5993 /* GD->LE relaxation:
5994 ldr xd, [x0, #:tlsdesc_lo12:var] => movk x0, :tprel_g0_nc:var
2d0ca824
YN
5995
5996 Where R is x for lp64 mode, and w for ILP32 mode. */
5997 bfd_putl32 (movk_R0, contents + rel->r_offset);
a06ea964
NC
5998 return bfd_reloc_continue;
5999 }
6000 else
6001 {
6002 /* GD->IE relaxation:
2d0ca824
YN
6003 ldr xd, [x0, #:tlsdesc_lo12:var] => ldr R0, [x0, #:gottprel_lo12:var]
6004
6005 Where R is x for lp64 mode, and w for ILP32 mode. */
a06ea964 6006 insn = bfd_getl32 (contents + rel->r_offset);
2d0ca824 6007 bfd_putl32 (ldr_R0_mask (insn), contents + rel->r_offset);
a06ea964
NC
6008 return bfd_reloc_continue;
6009 }
6010
a6bb11b2 6011 case BFD_RELOC_AARCH64_TLSGD_ADD_LO12_NC:
a06ea964
NC
6012 if (is_local)
6013 {
6014 /* GD->LE relaxation
07d6d2b8
AM
6015 add x0, #:tlsgd_lo12:var => movk R0, :tprel_g0_nc:var
6016 bl __tls_get_addr => mrs x1, tpidr_el0
6017 nop => add R0, R1, R0
2d0ca824
YN
6018
6019 Where R is x for lp64 mode, and w for ILP32 mode. */
a06ea964
NC
6020
6021 /* First kill the tls_get_addr reloc on the bl instruction. */
6022 BFD_ASSERT (rel->r_offset + 4 == rel[1].r_offset);
cec5225b 6023 rel[1].r_info = ELFNN_R_INFO (STN_UNDEF, R_AARCH64_NONE);
a06ea964 6024
2d0ca824 6025 bfd_putl32 (movk_R0, contents + rel->r_offset);
a06ea964 6026 bfd_putl32 (0xd53bd041, contents + rel->r_offset + 4);
2d0ca824 6027 bfd_putl32 (add_R0_R0_R1, contents + rel->r_offset + 8);
a06ea964
NC
6028 return bfd_reloc_continue;
6029 }
6030 else
6031 {
6032 /* GD->IE relaxation
07d6d2b8
AM
6033 ADD x0, #:tlsgd_lo12:var => ldr R0, [x0, #:gottprel_lo12:var]
6034 BL __tls_get_addr => mrs x1, tpidr_el0
a06ea964 6035 R_AARCH64_CALL26
07d6d2b8 6036 NOP => add R0, R1, R0
5cd1d8bc
YN
6037
6038 Where R is x for lp64 mode, and w for ilp32 mode. */
a06ea964 6039
a6bb11b2 6040 BFD_ASSERT (ELFNN_R_TYPE (rel[1].r_info) == AARCH64_R (CALL26));
a06ea964
NC
6041
6042 /* Remove the relocation on the BL instruction. */
cec5225b 6043 rel[1].r_info = ELFNN_R_INFO (STN_UNDEF, R_AARCH64_NONE);
a06ea964 6044
a06ea964
NC
6045 /* We choose to fixup the BL and NOP instructions using the
6046 offset from the second relocation to allow flexibility in
6047 scheduling instructions between the ADD and BL. */
2d0ca824 6048 bfd_putl32 (ldr_R0_x0, contents + rel->r_offset);
5cd1d8bc 6049 bfd_putl32 (0xd53bd041, contents + rel[1].r_offset);
2d0ca824 6050 bfd_putl32 (add_R0_R0_R1, contents + rel[1].r_offset + 4);
a06ea964
NC
6051 return bfd_reloc_continue;
6052 }
6053
0484b454 6054 case BFD_RELOC_AARCH64_TLSDESC_ADD:
f955cccf 6055 case BFD_RELOC_AARCH64_TLSDESC_ADD_LO12:
a6bb11b2 6056 case BFD_RELOC_AARCH64_TLSDESC_CALL:
a06ea964 6057 /* GD->IE/LE relaxation:
07d6d2b8
AM
6058 add x0, x0, #:tlsdesc_lo12:var => nop
6059 blr xd => nop
a06ea964
NC
6060 */
6061 bfd_putl32 (INSN_NOP, contents + rel->r_offset);
6062 return bfd_reloc_ok;
6063
0484b454
RL
6064 case BFD_RELOC_AARCH64_TLSDESC_LDR:
6065 if (is_local)
6066 {
6067 /* GD->LE relaxation:
2d0ca824
YN
6068 ldr xd, [gp, xn] => movk R0, #:tprel_g0_nc:var
6069
6070 Where R is x for lp64 mode, and w for ILP32 mode. */
6071 bfd_putl32 (movk_R0, contents + rel->r_offset);
0484b454
RL
6072 return bfd_reloc_continue;
6073 }
6074 else
6075 {
6076 /* GD->IE relaxation:
2d0ca824
YN
6077 ldr xd, [gp, xn] => ldr R0, [gp, xn]
6078
6079 Where R is x for lp64 mode, and w for ILP32 mode. */
0484b454 6080 insn = bfd_getl32 (contents + rel->r_offset);
2d0ca824 6081 bfd_putl32 (ldr_R0_mask (insn), contents + rel->r_offset);
0484b454
RL
6082 return bfd_reloc_ok;
6083 }
6084
6085 case BFD_RELOC_AARCH64_TLSDESC_OFF_G0_NC:
6086 /* GD->LE relaxation:
2d0ca824 6087 movk xd, #:tlsdesc_off_g0_nc:var => movk R0, #:tprel_g1_nc:var, lsl #16
0484b454 6088 GD->IE relaxation:
2d0ca824
YN
6089 movk xd, #:tlsdesc_off_g0_nc:var => movk Rd, #:gottprel_g0_nc:var
6090
6091 Where R is x for lp64 mode, and w for ILP32 mode. */
0484b454 6092 if (is_local)
2d0ca824 6093 bfd_putl32 (ldr_hw_R0, contents + rel->r_offset);
0484b454
RL
6094 return bfd_reloc_continue;
6095
6096 case BFD_RELOC_AARCH64_TLSDESC_OFF_G1:
6097 if (is_local)
6098 {
6099 /* GD->LE relaxation:
2d0ca824
YN
6100 movz xd, #:tlsdesc_off_g1:var => movz R0, #:tprel_g2:var, lsl #32
6101
6102 Where R is x for lp64 mode, and w for ILP32 mode. */
6103 bfd_putl32 (movz_hw_R0, contents + rel->r_offset);
0484b454
RL
6104 return bfd_reloc_continue;
6105 }
6106 else
6107 {
6108 /* GD->IE relaxation:
2d0ca824
YN
6109 movz xd, #:tlsdesc_off_g1:var => movz Rd, #:gottprel_g1:var, lsl #16
6110
6111 Where R is x for lp64 mode, and w for ILP32 mode. */
0484b454 6112 insn = bfd_getl32 (contents + rel->r_offset);
2d0ca824 6113 bfd_putl32 (movz_R0 | (insn & 0x1f), contents + rel->r_offset);
0484b454
RL
6114 return bfd_reloc_continue;
6115 }
6116
a6bb11b2 6117 case BFD_RELOC_AARCH64_TLSIE_ADR_GOTTPREL_PAGE21:
a06ea964 6118 /* IE->LE relaxation:
07d6d2b8 6119 adrp xd, :gottprel:var => movz Rd, :tprel_g1:var
2d0ca824
YN
6120
6121 Where R is x for lp64 mode, and w for ILP32 mode. */
a06ea964
NC
6122 if (is_local)
6123 {
6124 insn = bfd_getl32 (contents + rel->r_offset);
2d0ca824 6125 bfd_putl32 (movz_R0 | (insn & 0x1f), contents + rel->r_offset);
a06ea964
NC
6126 }
6127 return bfd_reloc_continue;
6128
a6bb11b2 6129 case BFD_RELOC_AARCH64_TLSIE_LDNN_GOTTPREL_LO12_NC:
a06ea964 6130 /* IE->LE relaxation:
07d6d2b8 6131 ldr xd, [xm, #:gottprel_lo12:var] => movk Rd, :tprel_g0_nc:var
2d0ca824
YN
6132
6133 Where R is x for lp64 mode, and w for ILP32 mode. */
a06ea964
NC
6134 if (is_local)
6135 {
6136 insn = bfd_getl32 (contents + rel->r_offset);
2d0ca824 6137 bfd_putl32 (movk_R0 | (insn & 0x1f), contents + rel->r_offset);
a06ea964
NC
6138 }
6139 return bfd_reloc_continue;
6140
259364ad
JW
6141 case BFD_RELOC_AARCH64_TLSLD_ADR_PREL21:
6142 /* LD->LE relaxation (tiny):
6143 adr x0, :tlsldm:x => mrs x0, tpidr_el0
c1fc2d7e
YN
6144 bl __tls_get_addr => add R0, R0, TCB_SIZE
6145
6146 Where R is x for lp64 mode, and w for ilp32 mode. */
259364ad
JW
6147 if (is_local)
6148 {
6149 BFD_ASSERT (rel->r_offset + 4 == rel[1].r_offset);
6150 BFD_ASSERT (ELFNN_R_TYPE (rel[1].r_info) == AARCH64_R (CALL26));
6151 /* No need of CALL26 relocation for tls_get_addr. */
6152 rel[1].r_info = ELFNN_R_INFO (STN_UNDEF, R_AARCH64_NONE);
6153 bfd_putl32 (0xd53bd040, contents + rel->r_offset + 0);
2d0ca824
YN
6154 bfd_putl32 (add_R0_R0 | (TCB_SIZE << 10),
6155 contents + rel->r_offset + 4);
259364ad
JW
6156 return bfd_reloc_ok;
6157 }
6158 return bfd_reloc_continue;
6159
6160 case BFD_RELOC_AARCH64_TLSLD_ADR_PAGE21:
6161 /* LD->LE relaxation (small):
6162 adrp x0, :tlsldm:x => mrs x0, tpidr_el0
6163 */
6164 if (is_local)
6165 {
6166 bfd_putl32 (0xd53bd040, contents + rel->r_offset);
6167 return bfd_reloc_ok;
6168 }
6169 return bfd_reloc_continue;
6170
6171 case BFD_RELOC_AARCH64_TLSLD_ADD_LO12_NC:
6172 /* LD->LE relaxation (small):
c1fc2d7e 6173 add x0, #:tlsldm_lo12:x => add R0, R0, TCB_SIZE
259364ad 6174 bl __tls_get_addr => nop
c1fc2d7e
YN
6175
6176 Where R is x for lp64 mode, and w for ilp32 mode. */
259364ad
JW
6177 if (is_local)
6178 {
6179 BFD_ASSERT (rel->r_offset + 4 == rel[1].r_offset);
6180 BFD_ASSERT (ELFNN_R_TYPE (rel[1].r_info) == AARCH64_R (CALL26));
6181 /* No need of CALL26 relocation for tls_get_addr. */
6182 rel[1].r_info = ELFNN_R_INFO (STN_UNDEF, R_AARCH64_NONE);
2d0ca824
YN
6183 bfd_putl32 (add_R0_R0 | (TCB_SIZE << 10),
6184 contents + rel->r_offset + 0);
c1fc2d7e 6185 bfd_putl32 (INSN_NOP, contents + rel->r_offset + 4);
259364ad
JW
6186 return bfd_reloc_ok;
6187 }
6188 return bfd_reloc_continue;
6189
a06ea964
NC
6190 default:
6191 return bfd_reloc_continue;
6192 }
6193
6194 return bfd_reloc_ok;
6195}
6196
6197/* Relocate an AArch64 ELF section. */
6198
6199static bfd_boolean
cec5225b 6200elfNN_aarch64_relocate_section (bfd *output_bfd,
a06ea964
NC
6201 struct bfd_link_info *info,
6202 bfd *input_bfd,
6203 asection *input_section,
6204 bfd_byte *contents,
6205 Elf_Internal_Rela *relocs,
6206 Elf_Internal_Sym *local_syms,
6207 asection **local_sections)
6208{
6209 Elf_Internal_Shdr *symtab_hdr;
6210 struct elf_link_hash_entry **sym_hashes;
6211 Elf_Internal_Rela *rel;
6212 Elf_Internal_Rela *relend;
6213 const char *name;
cec5225b 6214 struct elf_aarch64_link_hash_table *globals;
a06ea964
NC
6215 bfd_boolean save_addend = FALSE;
6216 bfd_vma addend = 0;
6217
cec5225b 6218 globals = elf_aarch64_hash_table (info);
a06ea964
NC
6219
6220 symtab_hdr = &elf_symtab_hdr (input_bfd);
6221 sym_hashes = elf_sym_hashes (input_bfd);
6222
6223 rel = relocs;
6224 relend = relocs + input_section->reloc_count;
6225 for (; rel < relend; rel++)
6226 {
6227 unsigned int r_type;
a6bb11b2
YZ
6228 bfd_reloc_code_real_type bfd_r_type;
6229 bfd_reloc_code_real_type relaxed_bfd_r_type;
a06ea964
NC
6230 reloc_howto_type *howto;
6231 unsigned long r_symndx;
6232 Elf_Internal_Sym *sym;
6233 asection *sec;
6234 struct elf_link_hash_entry *h;
6235 bfd_vma relocation;
6236 bfd_reloc_status_type r;
6237 arelent bfd_reloc;
6238 char sym_type;
6239 bfd_boolean unresolved_reloc = FALSE;
6240 char *error_message = NULL;
6241
cec5225b
YZ
6242 r_symndx = ELFNN_R_SYM (rel->r_info);
6243 r_type = ELFNN_R_TYPE (rel->r_info);
a06ea964 6244
0aa13fee
AM
6245 bfd_reloc.howto = elfNN_aarch64_howto_from_type (input_bfd, r_type);
6246 howto = bfd_reloc.howto;
a06ea964 6247
7fcfd62d 6248 if (howto == NULL)
47aeb64c
NC
6249 return _bfd_unrecognized_reloc (input_bfd, input_section, r_type);
6250
a6bb11b2 6251 bfd_r_type = elfNN_aarch64_bfd_reloc_from_howto (howto);
7fcfd62d 6252
a06ea964
NC
6253 h = NULL;
6254 sym = NULL;
6255 sec = NULL;
6256
6257 if (r_symndx < symtab_hdr->sh_info)
6258 {
6259 sym = local_syms + r_symndx;
cec5225b 6260 sym_type = ELFNN_ST_TYPE (sym->st_info);
a06ea964
NC
6261 sec = local_sections[r_symndx];
6262
6263 /* An object file might have a reference to a local
6264 undefined symbol. This is a daft object file, but we
6265 should at least do something about it. */
6266 if (r_type != R_AARCH64_NONE && r_type != R_AARCH64_NULL
6267 && bfd_is_und_section (sec)
6268 && ELF_ST_BIND (sym->st_info) != STB_WEAK)
1a72702b
AM
6269 (*info->callbacks->undefined_symbol)
6270 (info, bfd_elf_string_from_elf_section
6271 (input_bfd, symtab_hdr->sh_link, sym->st_name),
6272 input_bfd, input_section, rel->r_offset, TRUE);
a06ea964 6273
a06ea964 6274 relocation = _bfd_elf_rela_local_sym (output_bfd, sym, &sec, rel);
1419bbe5
WN
6275
6276 /* Relocate against local STT_GNU_IFUNC symbol. */
0e1862bb 6277 if (!bfd_link_relocatable (info)
1419bbe5
WN
6278 && ELF_ST_TYPE (sym->st_info) == STT_GNU_IFUNC)
6279 {
6280 h = elfNN_aarch64_get_local_sym_hash (globals, input_bfd,
6281 rel, FALSE);
6282 if (h == NULL)
6283 abort ();
6284
6285 /* Set STT_GNU_IFUNC symbol value. */
6286 h->root.u.def.value = sym->st_value;
6287 h->root.u.def.section = sec;
6288 }
a06ea964
NC
6289 }
6290 else
6291 {
62d887d4 6292 bfd_boolean warned, ignored;
a06ea964
NC
6293
6294 RELOC_FOR_GLOBAL_SYMBOL (info, input_bfd, input_section, rel,
6295 r_symndx, symtab_hdr, sym_hashes,
6296 h, sec, relocation,
62d887d4 6297 unresolved_reloc, warned, ignored);
a06ea964
NC
6298
6299 sym_type = h->type;
6300 }
6301
6302 if (sec != NULL && discarded_section (sec))
6303 RELOC_AGAINST_DISCARDED_SECTION (info, input_bfd, input_section,
6304 rel, 1, relend, howto, 0, contents);
6305
0e1862bb 6306 if (bfd_link_relocatable (info))
2e0488d3 6307 continue;
a06ea964
NC
6308
6309 if (h != NULL)
6310 name = h->root.root.string;
6311 else
6312 {
6313 name = (bfd_elf_string_from_elf_section
6314 (input_bfd, symtab_hdr->sh_link, sym->st_name));
6315 if (name == NULL || *name == '\0')
6316 name = bfd_section_name (input_bfd, sec);
6317 }
6318
6319 if (r_symndx != 0
6320 && r_type != R_AARCH64_NONE
6321 && r_type != R_AARCH64_NULL
6322 && (h == NULL
6323 || h->root.type == bfd_link_hash_defined
6324 || h->root.type == bfd_link_hash_defweak)
a6bb11b2 6325 && IS_AARCH64_TLS_RELOC (bfd_r_type) != (sym_type == STT_TLS))
a06ea964 6326 {
4eca0228 6327 _bfd_error_handler
a06ea964 6328 ((sym_type == STT_TLS
695344c0 6329 /* xgettext:c-format */
2dcf00ce 6330 ? _("%pB(%pA+%#" PRIx64 "): %s used with TLS symbol %s")
695344c0 6331 /* xgettext:c-format */
2dcf00ce 6332 : _("%pB(%pA+%#" PRIx64 "): %s used with non-TLS symbol %s")),
a06ea964 6333 input_bfd,
2dcf00ce 6334 input_section, (uint64_t) rel->r_offset, howto->name, name);
a06ea964
NC
6335 }
6336
a06ea964 6337 /* We relax only if we can see that there can be a valid transition
07d6d2b8
AM
6338 from a reloc type to another.
6339 We call elfNN_aarch64_final_link_relocate unless we're completely
6340 done, i.e., the relaxation produced the final output we want. */
a06ea964 6341
a6bb11b2
YZ
6342 relaxed_bfd_r_type = aarch64_tls_transition (input_bfd, info, r_type,
6343 h, r_symndx);
6344 if (relaxed_bfd_r_type != bfd_r_type)
a06ea964 6345 {
a6bb11b2
YZ
6346 bfd_r_type = relaxed_bfd_r_type;
6347 howto = elfNN_aarch64_howto_from_bfd_reloc (bfd_r_type);
6348 BFD_ASSERT (howto != NULL);
6349 r_type = howto->type;
06d2788c 6350 r = elfNN_aarch64_tls_relax (globals, input_bfd, contents, rel, h);
a06ea964
NC
6351 unresolved_reloc = 0;
6352 }
6353 else
6354 r = bfd_reloc_continue;
6355
6356 /* There may be multiple consecutive relocations for the
07d6d2b8
AM
6357 same offset. In that case we are supposed to treat the
6358 output of each relocation as the addend for the next. */
a06ea964
NC
6359 if (rel + 1 < relend
6360 && rel->r_offset == rel[1].r_offset
cec5225b
YZ
6361 && ELFNN_R_TYPE (rel[1].r_info) != R_AARCH64_NONE
6362 && ELFNN_R_TYPE (rel[1].r_info) != R_AARCH64_NULL)
a06ea964
NC
6363 save_addend = TRUE;
6364 else
6365 save_addend = FALSE;
6366
6367 if (r == bfd_reloc_continue)
cec5225b 6368 r = elfNN_aarch64_final_link_relocate (howto, input_bfd, output_bfd,
a06ea964
NC
6369 input_section, contents, rel,
6370 relocation, info, sec,
6371 h, &unresolved_reloc,
1419bbe5 6372 save_addend, &addend, sym);
a06ea964 6373
0aa13fee 6374 switch (elfNN_aarch64_bfd_reloc_from_type (input_bfd, r_type))
a06ea964 6375 {
ce336788 6376 case BFD_RELOC_AARCH64_TLSGD_ADD_LO12_NC:
a6bb11b2 6377 case BFD_RELOC_AARCH64_TLSGD_ADR_PAGE21:
3c12b054 6378 case BFD_RELOC_AARCH64_TLSGD_ADR_PREL21:
7ba7cfe4 6379 case BFD_RELOC_AARCH64_TLSGD_MOVW_G0_NC:
94facae3 6380 case BFD_RELOC_AARCH64_TLSGD_MOVW_G1:
73f925cc 6381 case BFD_RELOC_AARCH64_TLSLD_ADD_LO12_NC:
f69e4920 6382 case BFD_RELOC_AARCH64_TLSLD_ADR_PAGE21:
77a69ff8 6383 case BFD_RELOC_AARCH64_TLSLD_ADR_PREL21:
a06ea964
NC
6384 if (! symbol_got_offset_mark_p (input_bfd, h, r_symndx))
6385 {
6386 bfd_boolean need_relocs = FALSE;
6387 bfd_byte *loc;
6388 int indx;
6389 bfd_vma off;
6390
6391 off = symbol_got_offset (input_bfd, h, r_symndx);
6392 indx = h && h->dynindx != -1 ? h->dynindx : 0;
6393
6394 need_relocs =
6dda7875 6395 (!bfd_link_executable (info) || indx != 0) &&
a06ea964
NC
6396 (h == NULL
6397 || ELF_ST_VISIBILITY (h->other) == STV_DEFAULT
6398 || h->root.type != bfd_link_hash_undefweak);
6399
6400 BFD_ASSERT (globals->root.srelgot != NULL);
6401
6402 if (need_relocs)
6403 {
6404 Elf_Internal_Rela rela;
a6bb11b2 6405 rela.r_info = ELFNN_R_INFO (indx, AARCH64_R (TLS_DTPMOD));
a06ea964
NC
6406 rela.r_addend = 0;
6407 rela.r_offset = globals->root.sgot->output_section->vma +
6408 globals->root.sgot->output_offset + off;
6409
6410
6411 loc = globals->root.srelgot->contents;
6412 loc += globals->root.srelgot->reloc_count++
6413 * RELOC_SIZE (htab);
cec5225b 6414 bfd_elfNN_swap_reloca_out (output_bfd, &rela, loc);
a06ea964 6415
f69e4920 6416 bfd_reloc_code_real_type real_type =
0aa13fee 6417 elfNN_aarch64_bfd_reloc_from_type (input_bfd, r_type);
f69e4920
JW
6418
6419 if (real_type == BFD_RELOC_AARCH64_TLSLD_ADR_PREL21
73f925cc
JW
6420 || real_type == BFD_RELOC_AARCH64_TLSLD_ADR_PAGE21
6421 || real_type == BFD_RELOC_AARCH64_TLSLD_ADD_LO12_NC)
77a69ff8
JW
6422 {
6423 /* For local dynamic, don't generate DTPREL in any case.
6424 Initialize the DTPREL slot into zero, so we get module
6425 base address when invoke runtime TLS resolver. */
6426 bfd_put_NN (output_bfd, 0,
6427 globals->root.sgot->contents + off
6428 + GOT_ENTRY_SIZE);
6429 }
6430 else if (indx == 0)
a06ea964 6431 {
cec5225b 6432 bfd_put_NN (output_bfd,
a06ea964
NC
6433 relocation - dtpoff_base (info),
6434 globals->root.sgot->contents + off
6435 + GOT_ENTRY_SIZE);
6436 }
6437 else
6438 {
6439 /* This TLS symbol is global. We emit a
6440 relocation to fixup the tls offset at load
6441 time. */
6442 rela.r_info =
a6bb11b2 6443 ELFNN_R_INFO (indx, AARCH64_R (TLS_DTPREL));
a06ea964
NC
6444 rela.r_addend = 0;
6445 rela.r_offset =
6446 (globals->root.sgot->output_section->vma
6447 + globals->root.sgot->output_offset + off
6448 + GOT_ENTRY_SIZE);
6449
6450 loc = globals->root.srelgot->contents;
6451 loc += globals->root.srelgot->reloc_count++
6452 * RELOC_SIZE (globals);
cec5225b
YZ
6453 bfd_elfNN_swap_reloca_out (output_bfd, &rela, loc);
6454 bfd_put_NN (output_bfd, (bfd_vma) 0,
a06ea964
NC
6455 globals->root.sgot->contents + off
6456 + GOT_ENTRY_SIZE);
6457 }
6458 }
6459 else
6460 {
cec5225b 6461 bfd_put_NN (output_bfd, (bfd_vma) 1,
a06ea964 6462 globals->root.sgot->contents + off);
cec5225b 6463 bfd_put_NN (output_bfd,
a06ea964
NC
6464 relocation - dtpoff_base (info),
6465 globals->root.sgot->contents + off
6466 + GOT_ENTRY_SIZE);
6467 }
6468
6469 symbol_got_offset_mark (input_bfd, h, r_symndx);
6470 }
6471 break;
6472
a6bb11b2
YZ
6473 case BFD_RELOC_AARCH64_TLSIE_ADR_GOTTPREL_PAGE21:
6474 case BFD_RELOC_AARCH64_TLSIE_LDNN_GOTTPREL_LO12_NC:
043bf05a 6475 case BFD_RELOC_AARCH64_TLSIE_LD_GOTTPREL_PREL19:
3b957e5b
RL
6476 case BFD_RELOC_AARCH64_TLSIE_MOVW_GOTTPREL_G0_NC:
6477 case BFD_RELOC_AARCH64_TLSIE_MOVW_GOTTPREL_G1:
a06ea964
NC
6478 if (! symbol_got_offset_mark_p (input_bfd, h, r_symndx))
6479 {
6480 bfd_boolean need_relocs = FALSE;
6481 bfd_byte *loc;
6482 int indx;
6483 bfd_vma off;
6484
6485 off = symbol_got_offset (input_bfd, h, r_symndx);
6486
6487 indx = h && h->dynindx != -1 ? h->dynindx : 0;
6488
6489 need_relocs =
6dda7875 6490 (!bfd_link_executable (info) || indx != 0) &&
a06ea964
NC
6491 (h == NULL
6492 || ELF_ST_VISIBILITY (h->other) == STV_DEFAULT
6493 || h->root.type != bfd_link_hash_undefweak);
6494
6495 BFD_ASSERT (globals->root.srelgot != NULL);
6496
6497 if (need_relocs)
6498 {
6499 Elf_Internal_Rela rela;
6500
6501 if (indx == 0)
6502 rela.r_addend = relocation - dtpoff_base (info);
6503 else
6504 rela.r_addend = 0;
6505
a6bb11b2 6506 rela.r_info = ELFNN_R_INFO (indx, AARCH64_R (TLS_TPREL));
a06ea964
NC
6507 rela.r_offset = globals->root.sgot->output_section->vma +
6508 globals->root.sgot->output_offset + off;
6509
6510 loc = globals->root.srelgot->contents;
6511 loc += globals->root.srelgot->reloc_count++
6512 * RELOC_SIZE (htab);
6513
cec5225b 6514 bfd_elfNN_swap_reloca_out (output_bfd, &rela, loc);
a06ea964 6515
cec5225b 6516 bfd_put_NN (output_bfd, rela.r_addend,
a06ea964
NC
6517 globals->root.sgot->contents + off);
6518 }
6519 else
cec5225b 6520 bfd_put_NN (output_bfd, relocation - tpoff_base (info),
a06ea964
NC
6521 globals->root.sgot->contents + off);
6522
6523 symbol_got_offset_mark (input_bfd, h, r_symndx);
6524 }
6525 break;
6526
f955cccf 6527 case BFD_RELOC_AARCH64_TLSDESC_ADD_LO12:
a6bb11b2 6528 case BFD_RELOC_AARCH64_TLSDESC_ADR_PAGE21:
389b8029 6529 case BFD_RELOC_AARCH64_TLSDESC_ADR_PREL21:
a6bb11b2 6530 case BFD_RELOC_AARCH64_TLSDESC_LDNN_LO12_NC:
1ada945d 6531 case BFD_RELOC_AARCH64_TLSDESC_LD_PREL19:
0484b454
RL
6532 case BFD_RELOC_AARCH64_TLSDESC_OFF_G0_NC:
6533 case BFD_RELOC_AARCH64_TLSDESC_OFF_G1:
a06ea964
NC
6534 if (! symbol_tlsdesc_got_offset_mark_p (input_bfd, h, r_symndx))
6535 {
6536 bfd_boolean need_relocs = FALSE;
6537 int indx = h && h->dynindx != -1 ? h->dynindx : 0;
6538 bfd_vma off = symbol_tlsdesc_got_offset (input_bfd, h, r_symndx);
6539
6540 need_relocs = (h == NULL
6541 || ELF_ST_VISIBILITY (h->other) == STV_DEFAULT
6542 || h->root.type != bfd_link_hash_undefweak);
6543
6544 BFD_ASSERT (globals->root.srelgot != NULL);
6545 BFD_ASSERT (globals->root.sgot != NULL);
6546
6547 if (need_relocs)
6548 {
6549 bfd_byte *loc;
6550 Elf_Internal_Rela rela;
a6bb11b2
YZ
6551 rela.r_info = ELFNN_R_INFO (indx, AARCH64_R (TLSDESC));
6552
a06ea964
NC
6553 rela.r_addend = 0;
6554 rela.r_offset = (globals->root.sgotplt->output_section->vma
6555 + globals->root.sgotplt->output_offset
6556 + off + globals->sgotplt_jump_table_size);
6557
6558 if (indx == 0)
6559 rela.r_addend = relocation - dtpoff_base (info);
6560
6561 /* Allocate the next available slot in the PLT reloc
6562 section to hold our R_AARCH64_TLSDESC, the next
6563 available slot is determined from reloc_count,
6564 which we step. But note, reloc_count was
6565 artifically moved down while allocating slots for
6566 real PLT relocs such that all of the PLT relocs
6567 will fit above the initial reloc_count and the
6568 extra stuff will fit below. */
6569 loc = globals->root.srelplt->contents;
6570 loc += globals->root.srelplt->reloc_count++
6571 * RELOC_SIZE (globals);
6572
cec5225b 6573 bfd_elfNN_swap_reloca_out (output_bfd, &rela, loc);
a06ea964 6574
cec5225b 6575 bfd_put_NN (output_bfd, (bfd_vma) 0,
a06ea964
NC
6576 globals->root.sgotplt->contents + off +
6577 globals->sgotplt_jump_table_size);
cec5225b 6578 bfd_put_NN (output_bfd, (bfd_vma) 0,
a06ea964
NC
6579 globals->root.sgotplt->contents + off +
6580 globals->sgotplt_jump_table_size +
6581 GOT_ENTRY_SIZE);
6582 }
6583
6584 symbol_tlsdesc_got_offset_mark (input_bfd, h, r_symndx);
6585 }
6586 break;
a6bb11b2
YZ
6587 default:
6588 break;
a06ea964
NC
6589 }
6590
a06ea964 6591 /* Dynamic relocs are not propagated for SEC_DEBUGGING sections
07d6d2b8
AM
6592 because such sections are not SEC_ALLOC and thus ld.so will
6593 not process them. */
a06ea964
NC
6594 if (unresolved_reloc
6595 && !((input_section->flags & SEC_DEBUGGING) != 0
6596 && h->def_dynamic)
6597 && _bfd_elf_section_offset (output_bfd, info, input_section,
6598 +rel->r_offset) != (bfd_vma) - 1)
6599 {
4eca0228 6600 _bfd_error_handler
695344c0 6601 /* xgettext:c-format */
2dcf00ce
AM
6602 (_("%pB(%pA+%#" PRIx64 "): "
6603 "unresolvable %s relocation against symbol `%s'"),
6604 input_bfd, input_section, (uint64_t) rel->r_offset, howto->name,
a06ea964
NC
6605 h->root.root.string);
6606 return FALSE;
6607 }
6608
6609 if (r != bfd_reloc_ok && r != bfd_reloc_continue)
6610 {
c674f5cd 6611 bfd_reloc_code_real_type real_r_type
0aa13fee 6612 = elfNN_aarch64_bfd_reloc_from_type (input_bfd, r_type);
c674f5cd 6613
a06ea964
NC
6614 switch (r)
6615 {
6616 case bfd_reloc_overflow:
1a72702b
AM
6617 (*info->callbacks->reloc_overflow)
6618 (info, (h ? &h->root : NULL), name, howto->name, (bfd_vma) 0,
6619 input_bfd, input_section, rel->r_offset);
c674f5cd
JW
6620 if (real_r_type == BFD_RELOC_AARCH64_LD64_GOTPAGE_LO15
6621 || real_r_type == BFD_RELOC_AARCH64_LD32_GOTPAGE_LO14)
6622 {
6623 (*info->callbacks->warning)
6624 (info,
90b6238f 6625 _("too many GOT entries for -fpic, "
c674f5cd
JW
6626 "please recompile with -fPIC"),
6627 name, input_bfd, input_section, rel->r_offset);
6628 return FALSE;
6629 }
027e9c75
NC
6630 /* Overflow can occur when a variable is referenced with a type
6631 that has a larger alignment than the type with which it was
6632 declared. eg:
6633 file1.c: extern int foo; int a (void) { return foo; }
6634 file2.c: char bar, foo, baz;
6635 If the variable is placed into a data section at an offset
6636 that is incompatible with the larger alignment requirement
6637 overflow will occur. (Strictly speaking this is not overflow
6638 but rather an alignment problem, but the bfd_reloc_ error
6639 enum does not have a value to cover that situation).
6640
6641 Try to catch this situation here and provide a more helpful
6642 error message to the user. */
6643 if (addend & ((1 << howto->rightshift) - 1)
6644 /* FIXME: Are we testing all of the appropriate reloc
6645 types here ? */
6646 && (real_r_type == BFD_RELOC_AARCH64_LD_LO19_PCREL
6647 || real_r_type == BFD_RELOC_AARCH64_LDST16_LO12
6648 || real_r_type == BFD_RELOC_AARCH64_LDST32_LO12
6649 || real_r_type == BFD_RELOC_AARCH64_LDST64_LO12
6650 || real_r_type == BFD_RELOC_AARCH64_LDST128_LO12))
6651 {
6652 info->callbacks->warning
90b6238f 6653 (info, _("one possible cause of this error is that the \
027e9c75 6654symbol is being referenced in the indicated code as if it had a larger \
90b6238f 6655alignment than was declared where it was defined"),
027e9c75
NC
6656 name, input_bfd, input_section, rel->r_offset);
6657 }
a06ea964
NC
6658 break;
6659
6660 case bfd_reloc_undefined:
1a72702b
AM
6661 (*info->callbacks->undefined_symbol)
6662 (info, name, input_bfd, input_section, rel->r_offset, TRUE);
a06ea964
NC
6663 break;
6664
6665 case bfd_reloc_outofrange:
6666 error_message = _("out of range");
6667 goto common_error;
6668
6669 case bfd_reloc_notsupported:
6670 error_message = _("unsupported relocation");
6671 goto common_error;
6672
6673 case bfd_reloc_dangerous:
6674 /* error_message should already be set. */
6675 goto common_error;
6676
6677 default:
6678 error_message = _("unknown error");
6679 /* Fall through. */
6680
6681 common_error:
6682 BFD_ASSERT (error_message != NULL);
1a72702b
AM
6683 (*info->callbacks->reloc_dangerous)
6684 (info, error_message, input_bfd, input_section, rel->r_offset);
a06ea964
NC
6685 break;
6686 }
6687 }
027e9c75
NC
6688
6689 if (!save_addend)
6690 addend = 0;
a06ea964
NC
6691 }
6692
6693 return TRUE;
6694}
6695
6696/* Set the right machine number. */
6697
6698static bfd_boolean
cec5225b 6699elfNN_aarch64_object_p (bfd *abfd)
a06ea964 6700{
cec5225b
YZ
6701#if ARCH_SIZE == 32
6702 bfd_default_set_arch_mach (abfd, bfd_arch_aarch64, bfd_mach_aarch64_ilp32);
6703#else
a06ea964 6704 bfd_default_set_arch_mach (abfd, bfd_arch_aarch64, bfd_mach_aarch64);
cec5225b 6705#endif
a06ea964
NC
6706 return TRUE;
6707}
6708
6709/* Function to keep AArch64 specific flags in the ELF header. */
6710
6711static bfd_boolean
cec5225b 6712elfNN_aarch64_set_private_flags (bfd *abfd, flagword flags)
a06ea964
NC
6713{
6714 if (elf_flags_init (abfd) && elf_elfheader (abfd)->e_flags != flags)
6715 {
6716 }
6717 else
6718 {
6719 elf_elfheader (abfd)->e_flags = flags;
6720 elf_flags_init (abfd) = TRUE;
6721 }
6722
6723 return TRUE;
6724}
6725
a06ea964
NC
6726/* Merge backend specific data from an object file to the output
6727 object file when linking. */
6728
6729static bfd_boolean
50e03d47 6730elfNN_aarch64_merge_private_bfd_data (bfd *ibfd, struct bfd_link_info *info)
a06ea964 6731{
50e03d47 6732 bfd *obfd = info->output_bfd;
a06ea964
NC
6733 flagword out_flags;
6734 flagword in_flags;
6735 bfd_boolean flags_compatible = TRUE;
6736 asection *sec;
6737
6738 /* Check if we have the same endianess. */
50e03d47 6739 if (!_bfd_generic_verify_endian_match (ibfd, info))
a06ea964
NC
6740 return FALSE;
6741
6742 if (!is_aarch64_elf (ibfd) || !is_aarch64_elf (obfd))
6743 return TRUE;
6744
6745 /* The input BFD must have had its flags initialised. */
6746 /* The following seems bogus to me -- The flags are initialized in
6747 the assembler but I don't think an elf_flags_init field is
6748 written into the object. */
6749 /* BFD_ASSERT (elf_flags_init (ibfd)); */
6750
6751 in_flags = elf_elfheader (ibfd)->e_flags;
6752 out_flags = elf_elfheader (obfd)->e_flags;
6753
6754 if (!elf_flags_init (obfd))
6755 {
6756 /* If the input is the default architecture and had the default
07d6d2b8
AM
6757 flags then do not bother setting the flags for the output
6758 architecture, instead allow future merges to do this. If no
6759 future merges ever set these flags then they will retain their
6760 uninitialised values, which surprise surprise, correspond
6761 to the default values. */
a06ea964
NC
6762 if (bfd_get_arch_info (ibfd)->the_default
6763 && elf_elfheader (ibfd)->e_flags == 0)
6764 return TRUE;
6765
6766 elf_flags_init (obfd) = TRUE;
6767 elf_elfheader (obfd)->e_flags = in_flags;
6768
6769 if (bfd_get_arch (obfd) == bfd_get_arch (ibfd)
6770 && bfd_get_arch_info (obfd)->the_default)
6771 return bfd_set_arch_mach (obfd, bfd_get_arch (ibfd),
6772 bfd_get_mach (ibfd));
6773
6774 return TRUE;
6775 }
6776
6777 /* Identical flags must be compatible. */
6778 if (in_flags == out_flags)
6779 return TRUE;
6780
6781 /* Check to see if the input BFD actually contains any sections. If
6782 not, its flags may not have been initialised either, but it
6783 cannot actually cause any incompatiblity. Do not short-circuit
6784 dynamic objects; their section list may be emptied by
6785 elf_link_add_object_symbols.
6786
6787 Also check to see if there are no code sections in the input.
6788 In this case there is no need to check for code specific flags.
6789 XXX - do we need to worry about floating-point format compatability
6790 in data sections ? */
6791 if (!(ibfd->flags & DYNAMIC))
6792 {
6793 bfd_boolean null_input_bfd = TRUE;
6794 bfd_boolean only_data_sections = TRUE;
6795
6796 for (sec = ibfd->sections; sec != NULL; sec = sec->next)
6797 {
6798 if ((bfd_get_section_flags (ibfd, sec)
6799 & (SEC_LOAD | SEC_CODE | SEC_HAS_CONTENTS))
6800 == (SEC_LOAD | SEC_CODE | SEC_HAS_CONTENTS))
6801 only_data_sections = FALSE;
6802
6803 null_input_bfd = FALSE;
6804 break;
6805 }
6806
6807 if (null_input_bfd || only_data_sections)
6808 return TRUE;
6809 }
6810
6811 return flags_compatible;
6812}
6813
6814/* Display the flags field. */
6815
6816static bfd_boolean
cec5225b 6817elfNN_aarch64_print_private_bfd_data (bfd *abfd, void *ptr)
a06ea964
NC
6818{
6819 FILE *file = (FILE *) ptr;
6820 unsigned long flags;
6821
6822 BFD_ASSERT (abfd != NULL && ptr != NULL);
6823
6824 /* Print normal ELF private data. */
6825 _bfd_elf_print_private_bfd_data (abfd, ptr);
6826
6827 flags = elf_elfheader (abfd)->e_flags;
6828 /* Ignore init flag - it may not be set, despite the flags field
6829 containing valid data. */
6830
6831 /* xgettext:c-format */
6832 fprintf (file, _("private flags = %lx:"), elf_elfheader (abfd)->e_flags);
6833
6834 if (flags)
6835 fprintf (file, _("<Unrecognised flag bits set>"));
6836
6837 fputc ('\n', file);
6838
6839 return TRUE;
6840}
6841
63c1f59d
AM
6842/* Find dynamic relocs for H that apply to read-only sections. */
6843
6844static asection *
6845readonly_dynrelocs (struct elf_link_hash_entry *h)
6846{
6847 struct elf_dyn_relocs *p;
6848
6849 for (p = elf_aarch64_hash_entry (h)->dyn_relocs; p != NULL; p = p->next)
6850 {
6851 asection *s = p->sec->output_section;
6852
6853 if (s != NULL && (s->flags & SEC_READONLY) != 0)
6854 return p->sec;
6855 }
6856 return NULL;
6857}
6858
6353d82b
JW
6859/* Return true if we need copy relocation against EH. */
6860
6861static bfd_boolean
6862need_copy_relocation_p (struct elf_aarch64_link_hash_entry *eh)
6863{
6864 struct elf_dyn_relocs *p;
6865 asection *s;
6866
6867 for (p = eh->dyn_relocs; p != NULL; p = p->next)
6868 {
6869 /* If there is any pc-relative reference, we need to keep copy relocation
6870 to avoid propagating the relocation into runtime that current glibc
6871 does not support. */
6872 if (p->pc_count)
6873 return TRUE;
6874
6875 s = p->sec->output_section;
6876 /* Need copy relocation if it's against read-only section. */
6877 if (s != NULL && (s->flags & SEC_READONLY) != 0)
6878 return TRUE;
6879 }
6880
6881 return FALSE;
6882}
6883
a06ea964
NC
6884/* Adjust a symbol defined by a dynamic object and referenced by a
6885 regular object. The current definition is in some section of the
6886 dynamic object, but we're not including those sections. We have to
6887 change the definition to something the rest of the link can
6888 understand. */
6889
6890static bfd_boolean
cec5225b 6891elfNN_aarch64_adjust_dynamic_symbol (struct bfd_link_info *info,
a06ea964
NC
6892 struct elf_link_hash_entry *h)
6893{
cec5225b 6894 struct elf_aarch64_link_hash_table *htab;
5474d94f 6895 asection *s, *srel;
a06ea964
NC
6896
6897 /* If this is a function, put it in the procedure linkage table. We
6898 will fill in the contents of the procedure linkage table later,
6899 when we know the address of the .got section. */
1419bbe5 6900 if (h->type == STT_FUNC || h->type == STT_GNU_IFUNC || h->needs_plt)
a06ea964
NC
6901 {
6902 if (h->plt.refcount <= 0
1419bbe5
WN
6903 || (h->type != STT_GNU_IFUNC
6904 && (SYMBOL_CALLS_LOCAL (info, h)
6905 || (ELF_ST_VISIBILITY (h->other) != STV_DEFAULT
6906 && h->root.type == bfd_link_hash_undefweak))))
a06ea964
NC
6907 {
6908 /* This case can occur if we saw a CALL26 reloc in
6909 an input file, but the symbol wasn't referred to
6910 by a dynamic object or all references were
6911 garbage collected. In which case we can end up
6912 resolving. */
6913 h->plt.offset = (bfd_vma) - 1;
6914 h->needs_plt = 0;
6915 }
6916
6917 return TRUE;
6918 }
6919 else
80de0c6d 6920 /* Otherwise, reset to -1. */
a06ea964
NC
6921 h->plt.offset = (bfd_vma) - 1;
6922
6923
6924 /* If this is a weak symbol, and there is a real definition, the
6925 processor independent code will have arranged for us to see the
6926 real definition first, and we can just use the same value. */
60d67dc8 6927 if (h->is_weakalias)
a06ea964 6928 {
60d67dc8
AM
6929 struct elf_link_hash_entry *def = weakdef (h);
6930 BFD_ASSERT (def->root.type == bfd_link_hash_defined);
6931 h->root.u.def.section = def->root.u.def.section;
6932 h->root.u.def.value = def->root.u.def.value;
a06ea964 6933 if (ELIMINATE_COPY_RELOCS || info->nocopyreloc)
60d67dc8 6934 h->non_got_ref = def->non_got_ref;
a06ea964
NC
6935 return TRUE;
6936 }
6937
6938 /* If we are creating a shared library, we must presume that the
6939 only references to the symbol are via the global offset table.
6940 For such cases we need not do anything here; the relocations will
6941 be handled correctly by relocate_section. */
0e1862bb 6942 if (bfd_link_pic (info))
a06ea964
NC
6943 return TRUE;
6944
6945 /* If there are no references to this symbol that do not use the
6946 GOT, we don't need to generate a copy reloc. */
6947 if (!h->non_got_ref)
6948 return TRUE;
6949
6950 /* If -z nocopyreloc was given, we won't generate them either. */
6951 if (info->nocopyreloc)
6952 {
6953 h->non_got_ref = 0;
6954 return TRUE;
6955 }
6956
6353d82b
JW
6957 if (ELIMINATE_COPY_RELOCS)
6958 {
6959 struct elf_aarch64_link_hash_entry *eh;
dce2246a 6960 /* If we don't find any dynamic relocs in read-only sections, then
6353d82b
JW
6961 we'll be keeping the dynamic relocs and avoiding the copy reloc. */
6962 eh = (struct elf_aarch64_link_hash_entry *) h;
6963 if (!need_copy_relocation_p (eh))
6964 {
6965 h->non_got_ref = 0;
6966 return TRUE;
6967 }
6968 }
6969
a06ea964
NC
6970 /* We must allocate the symbol in our .dynbss section, which will
6971 become part of the .bss section of the executable. There will be
6972 an entry for this symbol in the .dynsym section. The dynamic
6973 object will contain position independent code, so all references
6974 from the dynamic object to this symbol will go through the global
6975 offset table. The dynamic linker will use the .dynsym entry to
6976 determine the address it must put in the global offset table, so
6977 both the dynamic object and the regular object will refer to the
6978 same memory location for the variable. */
6979
cec5225b 6980 htab = elf_aarch64_hash_table (info);
a06ea964
NC
6981
6982 /* We must generate a R_AARCH64_COPY reloc to tell the dynamic linker
6983 to copy the initial value out of the dynamic object and into the
6984 runtime process image. */
5474d94f
AM
6985 if ((h->root.u.def.section->flags & SEC_READONLY) != 0)
6986 {
6987 s = htab->root.sdynrelro;
6988 srel = htab->root.sreldynrelro;
6989 }
6990 else
6991 {
6992 s = htab->root.sdynbss;
6993 srel = htab->root.srelbss;
6994 }
a06ea964
NC
6995 if ((h->root.u.def.section->flags & SEC_ALLOC) != 0 && h->size != 0)
6996 {
5474d94f 6997 srel->size += RELOC_SIZE (htab);
a06ea964
NC
6998 h->needs_copy = 1;
6999 }
7000
6cabe1ea 7001 return _bfd_elf_adjust_dynamic_copy (info, h, s);
a06ea964
NC
7002
7003}
7004
7005static bfd_boolean
cec5225b 7006elfNN_aarch64_allocate_local_symbols (bfd *abfd, unsigned number)
a06ea964
NC
7007{
7008 struct elf_aarch64_local_symbol *locals;
cec5225b 7009 locals = elf_aarch64_locals (abfd);
a06ea964
NC
7010 if (locals == NULL)
7011 {
7012 locals = (struct elf_aarch64_local_symbol *)
7013 bfd_zalloc (abfd, number * sizeof (struct elf_aarch64_local_symbol));
7014 if (locals == NULL)
7015 return FALSE;
cec5225b 7016 elf_aarch64_locals (abfd) = locals;
a06ea964
NC
7017 }
7018 return TRUE;
7019}
7020
cc0efaa8
MS
7021/* Create the .got section to hold the global offset table. */
7022
7023static bfd_boolean
7024aarch64_elf_create_got_section (bfd *abfd, struct bfd_link_info *info)
7025{
7026 const struct elf_backend_data *bed = get_elf_backend_data (abfd);
7027 flagword flags;
7028 asection *s;
7029 struct elf_link_hash_entry *h;
7030 struct elf_link_hash_table *htab = elf_hash_table (info);
7031
7032 /* This function may be called more than once. */
ce558b89 7033 if (htab->sgot != NULL)
cc0efaa8
MS
7034 return TRUE;
7035
7036 flags = bed->dynamic_sec_flags;
7037
7038 s = bfd_make_section_anyway_with_flags (abfd,
7039 (bed->rela_plts_and_copies_p
7040 ? ".rela.got" : ".rel.got"),
7041 (bed->dynamic_sec_flags
7042 | SEC_READONLY));
7043 if (s == NULL
7044 || ! bfd_set_section_alignment (abfd, s, bed->s->log_file_align))
7045 return FALSE;
7046 htab->srelgot = s;
7047
7048 s = bfd_make_section_anyway_with_flags (abfd, ".got", flags);
7049 if (s == NULL
7050 || !bfd_set_section_alignment (abfd, s, bed->s->log_file_align))
7051 return FALSE;
7052 htab->sgot = s;
7053 htab->sgot->size += GOT_ENTRY_SIZE;
7054
7055 if (bed->want_got_sym)
7056 {
7057 /* Define the symbol _GLOBAL_OFFSET_TABLE_ at the start of the .got
7058 (or .got.plt) section. We don't do this in the linker script
7059 because we don't want to define the symbol if we are not creating
7060 a global offset table. */
7061 h = _bfd_elf_define_linkage_sym (abfd, info, s,
7062 "_GLOBAL_OFFSET_TABLE_");
7063 elf_hash_table (info)->hgot = h;
7064 if (h == NULL)
7065 return FALSE;
7066 }
7067
7068 if (bed->want_got_plt)
7069 {
7070 s = bfd_make_section_anyway_with_flags (abfd, ".got.plt", flags);
7071 if (s == NULL
7072 || !bfd_set_section_alignment (abfd, s,
7073 bed->s->log_file_align))
7074 return FALSE;
7075 htab->sgotplt = s;
7076 }
7077
7078 /* The first bit of the global offset table is the header. */
7079 s->size += bed->got_header_size;
7080
7081 return TRUE;
7082}
7083
a06ea964
NC
7084/* Look through the relocs for a section during the first phase. */
7085
7086static bfd_boolean
cec5225b 7087elfNN_aarch64_check_relocs (bfd *abfd, struct bfd_link_info *info,
a06ea964
NC
7088 asection *sec, const Elf_Internal_Rela *relocs)
7089{
7090 Elf_Internal_Shdr *symtab_hdr;
7091 struct elf_link_hash_entry **sym_hashes;
7092 const Elf_Internal_Rela *rel;
7093 const Elf_Internal_Rela *rel_end;
7094 asection *sreloc;
7095
cec5225b 7096 struct elf_aarch64_link_hash_table *htab;
a06ea964 7097
0e1862bb 7098 if (bfd_link_relocatable (info))
a06ea964
NC
7099 return TRUE;
7100
7101 BFD_ASSERT (is_aarch64_elf (abfd));
7102
cec5225b 7103 htab = elf_aarch64_hash_table (info);
a06ea964
NC
7104 sreloc = NULL;
7105
7106 symtab_hdr = &elf_symtab_hdr (abfd);
7107 sym_hashes = elf_sym_hashes (abfd);
a06ea964
NC
7108
7109 rel_end = relocs + sec->reloc_count;
7110 for (rel = relocs; rel < rel_end; rel++)
7111 {
7112 struct elf_link_hash_entry *h;
d42c267e 7113 unsigned int r_symndx;
a06ea964 7114 unsigned int r_type;
a6bb11b2 7115 bfd_reloc_code_real_type bfd_r_type;
1419bbe5 7116 Elf_Internal_Sym *isym;
a06ea964 7117
cec5225b
YZ
7118 r_symndx = ELFNN_R_SYM (rel->r_info);
7119 r_type = ELFNN_R_TYPE (rel->r_info);
a06ea964
NC
7120
7121 if (r_symndx >= NUM_SHDR_ENTRIES (symtab_hdr))
7122 {
695344c0 7123 /* xgettext:c-format */
871b3ab2 7124 _bfd_error_handler (_("%pB: bad symbol index: %d"), abfd, r_symndx);
a06ea964
NC
7125 return FALSE;
7126 }
7127
ed5acf27 7128 if (r_symndx < symtab_hdr->sh_info)
1419bbe5
WN
7129 {
7130 /* A local symbol. */
7131 isym = bfd_sym_from_r_symndx (&htab->sym_cache,
7132 abfd, r_symndx);
7133 if (isym == NULL)
7134 return FALSE;
7135
7136 /* Check relocation against local STT_GNU_IFUNC symbol. */
7137 if (ELF_ST_TYPE (isym->st_info) == STT_GNU_IFUNC)
7138 {
7139 h = elfNN_aarch64_get_local_sym_hash (htab, abfd, rel,
7140 TRUE);
7141 if (h == NULL)
7142 return FALSE;
7143
7144 /* Fake a STT_GNU_IFUNC symbol. */
7145 h->type = STT_GNU_IFUNC;
7146 h->def_regular = 1;
7147 h->ref_regular = 1;
7148 h->forced_local = 1;
7149 h->root.type = bfd_link_hash_defined;
7150 }
7151 else
7152 h = NULL;
7153 }
a06ea964
NC
7154 else
7155 {
7156 h = sym_hashes[r_symndx - symtab_hdr->sh_info];
7157 while (h->root.type == bfd_link_hash_indirect
7158 || h->root.type == bfd_link_hash_warning)
7159 h = (struct elf_link_hash_entry *) h->root.u.i.link;
7160 }
7161
7162 /* Could be done earlier, if h were already available. */
a6bb11b2 7163 bfd_r_type = aarch64_tls_transition (abfd, info, r_type, h, r_symndx);
a06ea964 7164
1419bbe5
WN
7165 if (h != NULL)
7166 {
18f822a0
JW
7167 /* If a relocation refers to _GLOBAL_OFFSET_TABLE_, create the .got.
7168 This shows up in particular in an R_AARCH64_PREL64 in large model
7169 when calculating the pc-relative address to .got section which is
7170 used to initialize the gp register. */
7171 if (h->root.root.string
7172 && strcmp (h->root.root.string, "_GLOBAL_OFFSET_TABLE_") == 0)
7173 {
7174 if (htab->root.dynobj == NULL)
7175 htab->root.dynobj = abfd;
7176
7177 if (! aarch64_elf_create_got_section (htab->root.dynobj, info))
7178 return FALSE;
7179
7180 BFD_ASSERT (h == htab->root.hgot);
7181 }
7182
1419bbe5
WN
7183 /* Create the ifunc sections for static executables. If we
7184 never see an indirect function symbol nor we are building
7185 a static executable, those sections will be empty and
7186 won't appear in output. */
7187 switch (bfd_r_type)
7188 {
7189 default:
7190 break;
7191
ce336788
JW
7192 case BFD_RELOC_AARCH64_ADD_LO12:
7193 case BFD_RELOC_AARCH64_ADR_GOT_PAGE:
7194 case BFD_RELOC_AARCH64_ADR_HI21_PCREL:
1419bbe5 7195 case BFD_RELOC_AARCH64_CALL26:
ce336788 7196 case BFD_RELOC_AARCH64_GOT_LD_PREL19:
1419bbe5 7197 case BFD_RELOC_AARCH64_JUMP26:
7018c030 7198 case BFD_RELOC_AARCH64_LD32_GOTPAGE_LO14:
1419bbe5 7199 case BFD_RELOC_AARCH64_LD32_GOT_LO12_NC:
a2e1db00 7200 case BFD_RELOC_AARCH64_LD64_GOTOFF_LO15:
99ad26cb 7201 case BFD_RELOC_AARCH64_LD64_GOTPAGE_LO15:
1419bbe5 7202 case BFD_RELOC_AARCH64_LD64_GOT_LO12_NC:
dc8008f5 7203 case BFD_RELOC_AARCH64_MOVW_GOTOFF_G0_NC:
74a1bfe1 7204 case BFD_RELOC_AARCH64_MOVW_GOTOFF_G1:
ce336788 7205 case BFD_RELOC_AARCH64_NN:
1419bbe5
WN
7206 if (htab->root.dynobj == NULL)
7207 htab->root.dynobj = abfd;
7208 if (!_bfd_elf_create_ifunc_sections (htab->root.dynobj, info))
7209 return FALSE;
7210 break;
7211 }
7212
2d0ca824 7213 /* It is referenced by a non-shared object. */
1419bbe5 7214 h->ref_regular = 1;
1419bbe5
WN
7215 }
7216
a6bb11b2 7217 switch (bfd_r_type)
a06ea964 7218 {
79e74192
RL
7219 case BFD_RELOC_AARCH64_16:
7220#if ARCH_SIZE == 64
7221 case BFD_RELOC_AARCH64_32:
7222#endif
279b2f94 7223 if (bfd_link_pic (info) && (sec->flags & SEC_ALLOC) != 0)
79e74192 7224 {
279b2f94
RL
7225 if (h != NULL
7226 /* This is an absolute symbol. It represents a value instead
7227 of an address. */
7228 && ((h->root.type == bfd_link_hash_defined
7229 && bfd_is_abs_section (h->root.u.def.section))
7230 /* This is an undefined symbol. */
7231 || h->root.type == bfd_link_hash_undefined))
7232 break;
7233
7234 /* For local symbols, defined global symbols in a non-ABS section,
7235 it is assumed that the value is an address. */
79e74192
RL
7236 int howto_index = bfd_r_type - BFD_RELOC_AARCH64_RELOC_START;
7237 _bfd_error_handler
7238 /* xgettext:c-format */
871b3ab2 7239 (_("%pB: relocation %s against `%s' can not be used when making "
79e74192
RL
7240 "a shared object"),
7241 abfd, elfNN_aarch64_howto_table[howto_index].name,
7242 (h) ? h->root.root.string : "a local symbol");
7243 bfd_set_error (bfd_error_bad_value);
7244 return FALSE;
7245 }
7246 else
7247 break;
7248
6353d82b
JW
7249 case BFD_RELOC_AARCH64_MOVW_G0_NC:
7250 case BFD_RELOC_AARCH64_MOVW_G1_NC:
7251 case BFD_RELOC_AARCH64_MOVW_G2_NC:
7252 case BFD_RELOC_AARCH64_MOVW_G3:
7253 if (bfd_link_pic (info))
7254 {
7255 int howto_index = bfd_r_type - BFD_RELOC_AARCH64_RELOC_START;
7256 _bfd_error_handler
7257 /* xgettext:c-format */
871b3ab2 7258 (_("%pB: relocation %s against `%s' can not be used when making "
6353d82b
JW
7259 "a shared object; recompile with -fPIC"),
7260 abfd, elfNN_aarch64_howto_table[howto_index].name,
7261 (h) ? h->root.root.string : "a local symbol");
7262 bfd_set_error (bfd_error_bad_value);
7263 return FALSE;
7264 }
7265 /* Fall through. */
7266
7267 case BFD_RELOC_AARCH64_16_PCREL:
7268 case BFD_RELOC_AARCH64_32_PCREL:
7269 case BFD_RELOC_AARCH64_64_PCREL:
7270 case BFD_RELOC_AARCH64_ADD_LO12:
7271 case BFD_RELOC_AARCH64_ADR_HI21_NC_PCREL:
7272 case BFD_RELOC_AARCH64_ADR_HI21_PCREL:
7273 case BFD_RELOC_AARCH64_ADR_LO21_PCREL:
7274 case BFD_RELOC_AARCH64_LDST128_LO12:
7275 case BFD_RELOC_AARCH64_LDST16_LO12:
7276 case BFD_RELOC_AARCH64_LDST32_LO12:
7277 case BFD_RELOC_AARCH64_LDST64_LO12:
7278 case BFD_RELOC_AARCH64_LDST8_LO12:
7279 case BFD_RELOC_AARCH64_LD_LO19_PCREL:
7280 if (h == NULL || bfd_link_pic (info))
7281 break;
7282 /* Fall through. */
7283
a6bb11b2 7284 case BFD_RELOC_AARCH64_NN:
a06ea964
NC
7285
7286 /* We don't need to handle relocs into sections not going into
7287 the "real" output. */
7288 if ((sec->flags & SEC_ALLOC) == 0)
7289 break;
7290
7291 if (h != NULL)
7292 {
0e1862bb 7293 if (!bfd_link_pic (info))
a06ea964
NC
7294 h->non_got_ref = 1;
7295
7296 h->plt.refcount += 1;
7297 h->pointer_equality_needed = 1;
7298 }
7299
7300 /* No need to do anything if we're not creating a shared
7301 object. */
6353d82b
JW
7302 if (!(bfd_link_pic (info)
7303 /* If on the other hand, we are creating an executable, we
7304 may need to keep relocations for symbols satisfied by a
7305 dynamic library if we manage to avoid copy relocs for the
7306 symbol.
7307
7308 NOTE: Currently, there is no support of copy relocs
7309 elimination on pc-relative relocation types, because there is
7310 no dynamic relocation support for them in glibc. We still
7311 record the dynamic symbol reference for them. This is
7312 because one symbol may be referenced by both absolute
7313 relocation (for example, BFD_RELOC_AARCH64_NN) and
7314 pc-relative relocation. We need full symbol reference
7315 information to make correct decision later in
7316 elfNN_aarch64_adjust_dynamic_symbol. */
7317 || (ELIMINATE_COPY_RELOCS
7318 && !bfd_link_pic (info)
7319 && h != NULL
7320 && (h->root.type == bfd_link_hash_defweak
7321 || !h->def_regular))))
a06ea964
NC
7322 break;
7323
7324 {
7325 struct elf_dyn_relocs *p;
7326 struct elf_dyn_relocs **head;
6353d82b 7327 int howto_index = bfd_r_type - BFD_RELOC_AARCH64_RELOC_START;
a06ea964
NC
7328
7329 /* We must copy these reloc types into the output file.
7330 Create a reloc section in dynobj and make room for
7331 this reloc. */
7332 if (sreloc == NULL)
7333 {
7334 if (htab->root.dynobj == NULL)
7335 htab->root.dynobj = abfd;
7336
7337 sreloc = _bfd_elf_make_dynamic_reloc_section
0608afa7 7338 (sec, htab->root.dynobj, LOG_FILE_ALIGN, abfd, /*rela? */ TRUE);
a06ea964
NC
7339
7340 if (sreloc == NULL)
7341 return FALSE;
7342 }
7343
7344 /* If this is a global symbol, we count the number of
7345 relocations we need for this symbol. */
7346 if (h != NULL)
7347 {
cec5225b
YZ
7348 struct elf_aarch64_link_hash_entry *eh;
7349 eh = (struct elf_aarch64_link_hash_entry *) h;
a06ea964
NC
7350 head = &eh->dyn_relocs;
7351 }
7352 else
7353 {
7354 /* Track dynamic relocs needed for local syms too.
7355 We really need local syms available to do this
7356 easily. Oh well. */
7357
7358 asection *s;
7359 void **vpp;
a06ea964
NC
7360
7361 isym = bfd_sym_from_r_symndx (&htab->sym_cache,
7362 abfd, r_symndx);
7363 if (isym == NULL)
7364 return FALSE;
7365
7366 s = bfd_section_from_elf_index (abfd, isym->st_shndx);
7367 if (s == NULL)
7368 s = sec;
7369
7370 /* Beware of type punned pointers vs strict aliasing
7371 rules. */
7372 vpp = &(elf_section_data (s)->local_dynrel);
7373 head = (struct elf_dyn_relocs **) vpp;
7374 }
7375
7376 p = *head;
7377 if (p == NULL || p->sec != sec)
7378 {
7379 bfd_size_type amt = sizeof *p;
7380 p = ((struct elf_dyn_relocs *)
7381 bfd_zalloc (htab->root.dynobj, amt));
7382 if (p == NULL)
7383 return FALSE;
7384 p->next = *head;
7385 *head = p;
7386 p->sec = sec;
7387 }
7388
7389 p->count += 1;
7390
6353d82b
JW
7391 if (elfNN_aarch64_howto_table[howto_index].pc_relative)
7392 p->pc_count += 1;
a06ea964
NC
7393 }
7394 break;
7395
7396 /* RR: We probably want to keep a consistency check that
7397 there are no dangling GOT_PAGE relocs. */
a6bb11b2 7398 case BFD_RELOC_AARCH64_ADR_GOT_PAGE:
7bcccb57 7399 case BFD_RELOC_AARCH64_GOT_LD_PREL19:
7018c030 7400 case BFD_RELOC_AARCH64_LD32_GOTPAGE_LO14:
7bcccb57 7401 case BFD_RELOC_AARCH64_LD32_GOT_LO12_NC:
a2e1db00 7402 case BFD_RELOC_AARCH64_LD64_GOTOFF_LO15:
99ad26cb 7403 case BFD_RELOC_AARCH64_LD64_GOTPAGE_LO15:
7bcccb57 7404 case BFD_RELOC_AARCH64_LD64_GOT_LO12_NC:
dc8008f5 7405 case BFD_RELOC_AARCH64_MOVW_GOTOFF_G0_NC:
74a1bfe1 7406 case BFD_RELOC_AARCH64_MOVW_GOTOFF_G1:
f955cccf 7407 case BFD_RELOC_AARCH64_TLSDESC_ADD_LO12:
7bcccb57 7408 case BFD_RELOC_AARCH64_TLSDESC_ADR_PAGE21:
389b8029 7409 case BFD_RELOC_AARCH64_TLSDESC_ADR_PREL21:
7bcccb57 7410 case BFD_RELOC_AARCH64_TLSDESC_LD32_LO12_NC:
f955cccf 7411 case BFD_RELOC_AARCH64_TLSDESC_LD64_LO12:
1ada945d 7412 case BFD_RELOC_AARCH64_TLSDESC_LD_PREL19:
0484b454
RL
7413 case BFD_RELOC_AARCH64_TLSDESC_OFF_G0_NC:
7414 case BFD_RELOC_AARCH64_TLSDESC_OFF_G1:
a6bb11b2 7415 case BFD_RELOC_AARCH64_TLSGD_ADD_LO12_NC:
7bcccb57 7416 case BFD_RELOC_AARCH64_TLSGD_ADR_PAGE21:
3c12b054 7417 case BFD_RELOC_AARCH64_TLSGD_ADR_PREL21:
7ba7cfe4 7418 case BFD_RELOC_AARCH64_TLSGD_MOVW_G0_NC:
94facae3 7419 case BFD_RELOC_AARCH64_TLSGD_MOVW_G1:
a6bb11b2 7420 case BFD_RELOC_AARCH64_TLSIE_ADR_GOTTPREL_PAGE21:
a6bb11b2 7421 case BFD_RELOC_AARCH64_TLSIE_LD32_GOTTPREL_LO12_NC:
7bcccb57 7422 case BFD_RELOC_AARCH64_TLSIE_LD64_GOTTPREL_LO12_NC:
043bf05a 7423 case BFD_RELOC_AARCH64_TLSIE_LD_GOTTPREL_PREL19:
3b957e5b
RL
7424 case BFD_RELOC_AARCH64_TLSIE_MOVW_GOTTPREL_G0_NC:
7425 case BFD_RELOC_AARCH64_TLSIE_MOVW_GOTTPREL_G1:
73f925cc 7426 case BFD_RELOC_AARCH64_TLSLD_ADD_LO12_NC:
f69e4920 7427 case BFD_RELOC_AARCH64_TLSLD_ADR_PAGE21:
77a69ff8 7428 case BFD_RELOC_AARCH64_TLSLD_ADR_PREL21:
b7a944fe
RL
7429 case BFD_RELOC_AARCH64_TLSLE_MOVW_TPREL_G1:
7430 case BFD_RELOC_AARCH64_TLSLE_MOVW_TPREL_G1_NC:
7431 case BFD_RELOC_AARCH64_TLSLE_MOVW_TPREL_G2:
a06ea964
NC
7432 {
7433 unsigned got_type;
7434 unsigned old_got_type;
7435
a6bb11b2 7436 got_type = aarch64_reloc_got_type (bfd_r_type);
a06ea964
NC
7437
7438 if (h)
7439 {
7440 h->got.refcount += 1;
cec5225b 7441 old_got_type = elf_aarch64_hash_entry (h)->got_type;
a06ea964
NC
7442 }
7443 else
7444 {
7445 struct elf_aarch64_local_symbol *locals;
7446
cec5225b 7447 if (!elfNN_aarch64_allocate_local_symbols
a06ea964
NC
7448 (abfd, symtab_hdr->sh_info))
7449 return FALSE;
7450
cec5225b 7451 locals = elf_aarch64_locals (abfd);
a06ea964
NC
7452 BFD_ASSERT (r_symndx < symtab_hdr->sh_info);
7453 locals[r_symndx].got_refcount += 1;
7454 old_got_type = locals[r_symndx].got_type;
7455 }
7456
7457 /* If a variable is accessed with both general dynamic TLS
7458 methods, two slots may be created. */
7459 if (GOT_TLS_GD_ANY_P (old_got_type) && GOT_TLS_GD_ANY_P (got_type))
7460 got_type |= old_got_type;
7461
7462 /* We will already have issued an error message if there
7463 is a TLS/non-TLS mismatch, based on the symbol type.
7464 So just combine any TLS types needed. */
7465 if (old_got_type != GOT_UNKNOWN && old_got_type != GOT_NORMAL
7466 && got_type != GOT_NORMAL)
7467 got_type |= old_got_type;
7468
7469 /* If the symbol is accessed by both IE and GD methods, we
7470 are able to relax. Turn off the GD flag, without
7471 messing up with any other kind of TLS types that may be
7472 involved. */
7473 if ((got_type & GOT_TLS_IE) && GOT_TLS_GD_ANY_P (got_type))
7474 got_type &= ~ (GOT_TLSDESC_GD | GOT_TLS_GD);
7475
7476 if (old_got_type != got_type)
7477 {
7478 if (h != NULL)
cec5225b 7479 elf_aarch64_hash_entry (h)->got_type = got_type;
a06ea964
NC
7480 else
7481 {
7482 struct elf_aarch64_local_symbol *locals;
cec5225b 7483 locals = elf_aarch64_locals (abfd);
a06ea964
NC
7484 BFD_ASSERT (r_symndx < symtab_hdr->sh_info);
7485 locals[r_symndx].got_type = got_type;
7486 }
7487 }
7488
cc0efaa8
MS
7489 if (htab->root.dynobj == NULL)
7490 htab->root.dynobj = abfd;
7491 if (! aarch64_elf_create_got_section (htab->root.dynobj, info))
7492 return FALSE;
a06ea964
NC
7493 break;
7494 }
7495
a6bb11b2
YZ
7496 case BFD_RELOC_AARCH64_CALL26:
7497 case BFD_RELOC_AARCH64_JUMP26:
a06ea964
NC
7498 /* If this is a local symbol then we resolve it
7499 directly without creating a PLT entry. */
7500 if (h == NULL)
7501 continue;
7502
7503 h->needs_plt = 1;
1419bbe5
WN
7504 if (h->plt.refcount <= 0)
7505 h->plt.refcount = 1;
7506 else
7507 h->plt.refcount += 1;
a06ea964 7508 break;
a6bb11b2
YZ
7509
7510 default:
7511 break;
a06ea964
NC
7512 }
7513 }
a6bb11b2 7514
a06ea964
NC
7515 return TRUE;
7516}
7517
7518/* Treat mapping symbols as special target symbols. */
7519
7520static bfd_boolean
cec5225b 7521elfNN_aarch64_is_target_special_symbol (bfd *abfd ATTRIBUTE_UNUSED,
a06ea964
NC
7522 asymbol *sym)
7523{
7524 return bfd_is_aarch64_special_symbol_name (sym->name,
7525 BFD_AARCH64_SPECIAL_SYM_TYPE_ANY);
7526}
7527
7528/* This is a copy of elf_find_function () from elf.c except that
7529 AArch64 mapping symbols are ignored when looking for function names. */
7530
7531static bfd_boolean
7532aarch64_elf_find_function (bfd *abfd ATTRIBUTE_UNUSED,
a06ea964 7533 asymbol **symbols,
fb167eb2 7534 asection *section,
a06ea964
NC
7535 bfd_vma offset,
7536 const char **filename_ptr,
7537 const char **functionname_ptr)
7538{
7539 const char *filename = NULL;
7540 asymbol *func = NULL;
7541 bfd_vma low_func = 0;
7542 asymbol **p;
7543
7544 for (p = symbols; *p != NULL; p++)
7545 {
7546 elf_symbol_type *q;
7547
7548 q = (elf_symbol_type *) * p;
7549
7550 switch (ELF_ST_TYPE (q->internal_elf_sym.st_info))
7551 {
7552 default:
7553 break;
7554 case STT_FILE:
7555 filename = bfd_asymbol_name (&q->symbol);
7556 break;
7557 case STT_FUNC:
7558 case STT_NOTYPE:
7559 /* Skip mapping symbols. */
7560 if ((q->symbol.flags & BSF_LOCAL)
7561 && (bfd_is_aarch64_special_symbol_name
7562 (q->symbol.name, BFD_AARCH64_SPECIAL_SYM_TYPE_ANY)))
7563 continue;
7564 /* Fall through. */
7565 if (bfd_get_section (&q->symbol) == section
7566 && q->symbol.value >= low_func && q->symbol.value <= offset)
7567 {
7568 func = (asymbol *) q;
7569 low_func = q->symbol.value;
7570 }
7571 break;
7572 }
7573 }
7574
7575 if (func == NULL)
7576 return FALSE;
7577
7578 if (filename_ptr)
7579 *filename_ptr = filename;
7580 if (functionname_ptr)
7581 *functionname_ptr = bfd_asymbol_name (func);
7582
7583 return TRUE;
7584}
7585
7586
7587/* Find the nearest line to a particular section and offset, for error
7588 reporting. This code is a duplicate of the code in elf.c, except
7589 that it uses aarch64_elf_find_function. */
7590
7591static bfd_boolean
cec5225b 7592elfNN_aarch64_find_nearest_line (bfd *abfd,
a06ea964 7593 asymbol **symbols,
fb167eb2 7594 asection *section,
a06ea964
NC
7595 bfd_vma offset,
7596 const char **filename_ptr,
7597 const char **functionname_ptr,
fb167eb2
AM
7598 unsigned int *line_ptr,
7599 unsigned int *discriminator_ptr)
a06ea964
NC
7600{
7601 bfd_boolean found = FALSE;
7602
fb167eb2 7603 if (_bfd_dwarf2_find_nearest_line (abfd, symbols, NULL, section, offset,
a06ea964 7604 filename_ptr, functionname_ptr,
fb167eb2
AM
7605 line_ptr, discriminator_ptr,
7606 dwarf_debug_sections, 0,
a06ea964
NC
7607 &elf_tdata (abfd)->dwarf2_find_line_info))
7608 {
7609 if (!*functionname_ptr)
fb167eb2 7610 aarch64_elf_find_function (abfd, symbols, section, offset,
a06ea964
NC
7611 *filename_ptr ? NULL : filename_ptr,
7612 functionname_ptr);
7613
7614 return TRUE;
7615 }
7616
fb167eb2
AM
7617 /* Skip _bfd_dwarf1_find_nearest_line since no known AArch64
7618 toolchain uses DWARF1. */
7619
a06ea964
NC
7620 if (!_bfd_stab_section_find_nearest_line (abfd, symbols, section, offset,
7621 &found, filename_ptr,
7622 functionname_ptr, line_ptr,
7623 &elf_tdata (abfd)->line_info))
7624 return FALSE;
7625
7626 if (found && (*functionname_ptr || *line_ptr))
7627 return TRUE;
7628
7629 if (symbols == NULL)
7630 return FALSE;
7631
fb167eb2 7632 if (!aarch64_elf_find_function (abfd, symbols, section, offset,
a06ea964
NC
7633 filename_ptr, functionname_ptr))
7634 return FALSE;
7635
7636 *line_ptr = 0;
7637 return TRUE;
7638}
7639
7640static bfd_boolean
cec5225b 7641elfNN_aarch64_find_inliner_info (bfd *abfd,
a06ea964
NC
7642 const char **filename_ptr,
7643 const char **functionname_ptr,
7644 unsigned int *line_ptr)
7645{
7646 bfd_boolean found;
7647 found = _bfd_dwarf2_find_inliner_info
7648 (abfd, filename_ptr,
7649 functionname_ptr, line_ptr, &elf_tdata (abfd)->dwarf2_find_line_info);
7650 return found;
7651}
7652
7653
7654static void
cec5225b 7655elfNN_aarch64_post_process_headers (bfd *abfd,
1419bbe5 7656 struct bfd_link_info *link_info)
a06ea964
NC
7657{
7658 Elf_Internal_Ehdr *i_ehdrp; /* ELF file header, internal form. */
7659
7660 i_ehdrp = elf_elfheader (abfd);
a06ea964 7661 i_ehdrp->e_ident[EI_ABIVERSION] = AARCH64_ELF_ABI_VERSION;
1419bbe5 7662
78245035 7663 _bfd_elf_post_process_headers (abfd, link_info);
a06ea964
NC
7664}
7665
7666static enum elf_reloc_type_class
cec5225b 7667elfNN_aarch64_reloc_type_class (const struct bfd_link_info *info ATTRIBUTE_UNUSED,
7e612e98
AM
7668 const asection *rel_sec ATTRIBUTE_UNUSED,
7669 const Elf_Internal_Rela *rela)
a06ea964 7670{
f2e6a843
SN
7671 struct elf_aarch64_link_hash_table *htab = elf_aarch64_hash_table (info);
7672
7673 if (htab->root.dynsym != NULL
7674 && htab->root.dynsym->contents != NULL)
7675 {
7676 /* Check relocation against STT_GNU_IFUNC symbol if there are
7677 dynamic symbols. */
7678 bfd *abfd = info->output_bfd;
7679 const struct elf_backend_data *bed = get_elf_backend_data (abfd);
7680 unsigned long r_symndx = ELFNN_R_SYM (rela->r_info);
7681 if (r_symndx != STN_UNDEF)
7682 {
7683 Elf_Internal_Sym sym;
7684 if (!bed->s->swap_symbol_in (abfd,
7685 (htab->root.dynsym->contents
7686 + r_symndx * bed->s->sizeof_sym),
7687 0, &sym))
7688 {
7689 /* xgettext:c-format */
871b3ab2 7690 _bfd_error_handler (_("%pB symbol number %lu references"
f2e6a843
SN
7691 " nonexistent SHT_SYMTAB_SHNDX section"),
7692 abfd, r_symndx);
7693 /* Ideally an error class should be returned here. */
7694 }
7695 else if (ELF_ST_TYPE (sym.st_info) == STT_GNU_IFUNC)
7696 return reloc_class_ifunc;
7697 }
7698 }
7699
cec5225b 7700 switch ((int) ELFNN_R_TYPE (rela->r_info))
a06ea964 7701 {
f2e6a843
SN
7702 case AARCH64_R (IRELATIVE):
7703 return reloc_class_ifunc;
a6bb11b2 7704 case AARCH64_R (RELATIVE):
a06ea964 7705 return reloc_class_relative;
a6bb11b2 7706 case AARCH64_R (JUMP_SLOT):
a06ea964 7707 return reloc_class_plt;
a6bb11b2 7708 case AARCH64_R (COPY):
a06ea964
NC
7709 return reloc_class_copy;
7710 default:
7711 return reloc_class_normal;
7712 }
7713}
7714
a06ea964
NC
7715/* Handle an AArch64 specific section when reading an object file. This is
7716 called when bfd_section_from_shdr finds a section with an unknown
7717 type. */
7718
7719static bfd_boolean
cec5225b 7720elfNN_aarch64_section_from_shdr (bfd *abfd,
a06ea964
NC
7721 Elf_Internal_Shdr *hdr,
7722 const char *name, int shindex)
7723{
7724 /* There ought to be a place to keep ELF backend specific flags, but
7725 at the moment there isn't one. We just keep track of the
7726 sections by their name, instead. Fortunately, the ABI gives
7727 names for all the AArch64 specific sections, so we will probably get
7728 away with this. */
7729 switch (hdr->sh_type)
7730 {
7731 case SHT_AARCH64_ATTRIBUTES:
7732 break;
7733
7734 default:
7735 return FALSE;
7736 }
7737
7738 if (!_bfd_elf_make_section_from_shdr (abfd, hdr, name, shindex))
7739 return FALSE;
7740
7741 return TRUE;
7742}
7743
7744/* A structure used to record a list of sections, independently
7745 of the next and prev fields in the asection structure. */
7746typedef struct section_list
7747{
7748 asection *sec;
7749 struct section_list *next;
7750 struct section_list *prev;
7751}
7752section_list;
7753
7754/* Unfortunately we need to keep a list of sections for which
7755 an _aarch64_elf_section_data structure has been allocated. This
cec5225b 7756 is because it is possible for functions like elfNN_aarch64_write_section
a06ea964
NC
7757 to be called on a section which has had an elf_data_structure
7758 allocated for it (and so the used_by_bfd field is valid) but
7759 for which the AArch64 extended version of this structure - the
7760 _aarch64_elf_section_data structure - has not been allocated. */
7761static section_list *sections_with_aarch64_elf_section_data = NULL;
7762
7763static void
7764record_section_with_aarch64_elf_section_data (asection *sec)
7765{
7766 struct section_list *entry;
7767
7768 entry = bfd_malloc (sizeof (*entry));
7769 if (entry == NULL)
7770 return;
7771 entry->sec = sec;
7772 entry->next = sections_with_aarch64_elf_section_data;
7773 entry->prev = NULL;
7774 if (entry->next != NULL)
7775 entry->next->prev = entry;
7776 sections_with_aarch64_elf_section_data = entry;
7777}
7778
7779static struct section_list *
7780find_aarch64_elf_section_entry (asection *sec)
7781{
7782 struct section_list *entry;
7783 static struct section_list *last_entry = NULL;
7784
7785 /* This is a short cut for the typical case where the sections are added
7786 to the sections_with_aarch64_elf_section_data list in forward order and
7787 then looked up here in backwards order. This makes a real difference
7788 to the ld-srec/sec64k.exp linker test. */
7789 entry = sections_with_aarch64_elf_section_data;
7790 if (last_entry != NULL)
7791 {
7792 if (last_entry->sec == sec)
7793 entry = last_entry;
7794 else if (last_entry->next != NULL && last_entry->next->sec == sec)
7795 entry = last_entry->next;
7796 }
7797
7798 for (; entry; entry = entry->next)
7799 if (entry->sec == sec)
7800 break;
7801
7802 if (entry)
7803 /* Record the entry prior to this one - it is the entry we are
7804 most likely to want to locate next time. Also this way if we
7805 have been called from
7806 unrecord_section_with_aarch64_elf_section_data () we will not
7807 be caching a pointer that is about to be freed. */
7808 last_entry = entry->prev;
7809
7810 return entry;
7811}
7812
7813static void
7814unrecord_section_with_aarch64_elf_section_data (asection *sec)
7815{
7816 struct section_list *entry;
7817
7818 entry = find_aarch64_elf_section_entry (sec);
7819
7820 if (entry)
7821 {
7822 if (entry->prev != NULL)
7823 entry->prev->next = entry->next;
7824 if (entry->next != NULL)
7825 entry->next->prev = entry->prev;
7826 if (entry == sections_with_aarch64_elf_section_data)
7827 sections_with_aarch64_elf_section_data = entry->next;
7828 free (entry);
7829 }
7830}
7831
7832
7833typedef struct
7834{
7835 void *finfo;
7836 struct bfd_link_info *info;
7837 asection *sec;
7838 int sec_shndx;
7839 int (*func) (void *, const char *, Elf_Internal_Sym *,
7840 asection *, struct elf_link_hash_entry *);
7841} output_arch_syminfo;
7842
7843enum map_symbol_type
7844{
7845 AARCH64_MAP_INSN,
7846 AARCH64_MAP_DATA
7847};
7848
7849
7850/* Output a single mapping symbol. */
7851
7852static bfd_boolean
cec5225b 7853elfNN_aarch64_output_map_sym (output_arch_syminfo *osi,
a06ea964
NC
7854 enum map_symbol_type type, bfd_vma offset)
7855{
7856 static const char *names[2] = { "$x", "$d" };
7857 Elf_Internal_Sym sym;
7858
7859 sym.st_value = (osi->sec->output_section->vma
7860 + osi->sec->output_offset + offset);
7861 sym.st_size = 0;
7862 sym.st_other = 0;
7863 sym.st_info = ELF_ST_INFO (STB_LOCAL, STT_NOTYPE);
7864 sym.st_shndx = osi->sec_shndx;
7865 return osi->func (osi->finfo, names[type], &sym, osi->sec, NULL) == 1;
7866}
7867
a06ea964
NC
7868/* Output a single local symbol for a generated stub. */
7869
7870static bfd_boolean
cec5225b 7871elfNN_aarch64_output_stub_sym (output_arch_syminfo *osi, const char *name,
a06ea964
NC
7872 bfd_vma offset, bfd_vma size)
7873{
7874 Elf_Internal_Sym sym;
7875
7876 sym.st_value = (osi->sec->output_section->vma
7877 + osi->sec->output_offset + offset);
7878 sym.st_size = size;
7879 sym.st_other = 0;
7880 sym.st_info = ELF_ST_INFO (STB_LOCAL, STT_FUNC);
7881 sym.st_shndx = osi->sec_shndx;
7882 return osi->func (osi->finfo, name, &sym, osi->sec, NULL) == 1;
7883}
7884
7885static bfd_boolean
7886aarch64_map_one_stub (struct bfd_hash_entry *gen_entry, void *in_arg)
7887{
cec5225b 7888 struct elf_aarch64_stub_hash_entry *stub_entry;
a06ea964
NC
7889 asection *stub_sec;
7890 bfd_vma addr;
7891 char *stub_name;
7892 output_arch_syminfo *osi;
7893
7894 /* Massage our args to the form they really have. */
cec5225b 7895 stub_entry = (struct elf_aarch64_stub_hash_entry *) gen_entry;
a06ea964
NC
7896 osi = (output_arch_syminfo *) in_arg;
7897
7898 stub_sec = stub_entry->stub_sec;
7899
7900 /* Ensure this stub is attached to the current section being
7901 processed. */
7902 if (stub_sec != osi->sec)
7903 return TRUE;
7904
7905 addr = (bfd_vma) stub_entry->stub_offset;
7906
7907 stub_name = stub_entry->output_name;
7908
7909 switch (stub_entry->stub_type)
7910 {
7911 case aarch64_stub_adrp_branch:
cec5225b 7912 if (!elfNN_aarch64_output_stub_sym (osi, stub_name, addr,
a06ea964
NC
7913 sizeof (aarch64_adrp_branch_stub)))
7914 return FALSE;
cec5225b 7915 if (!elfNN_aarch64_output_map_sym (osi, AARCH64_MAP_INSN, addr))
a06ea964
NC
7916 return FALSE;
7917 break;
7918 case aarch64_stub_long_branch:
cec5225b 7919 if (!elfNN_aarch64_output_stub_sym
a06ea964
NC
7920 (osi, stub_name, addr, sizeof (aarch64_long_branch_stub)))
7921 return FALSE;
cec5225b 7922 if (!elfNN_aarch64_output_map_sym (osi, AARCH64_MAP_INSN, addr))
a06ea964 7923 return FALSE;
cec5225b 7924 if (!elfNN_aarch64_output_map_sym (osi, AARCH64_MAP_DATA, addr + 16))
a06ea964
NC
7925 return FALSE;
7926 break;
68fcca92
JW
7927 case aarch64_stub_erratum_835769_veneer:
7928 if (!elfNN_aarch64_output_stub_sym (osi, stub_name, addr,
7929 sizeof (aarch64_erratum_835769_stub)))
7930 return FALSE;
7931 if (!elfNN_aarch64_output_map_sym (osi, AARCH64_MAP_INSN, addr))
7932 return FALSE;
7933 break;
4106101c
MS
7934 case aarch64_stub_erratum_843419_veneer:
7935 if (!elfNN_aarch64_output_stub_sym (osi, stub_name, addr,
7936 sizeof (aarch64_erratum_843419_stub)))
7937 return FALSE;
7938 if (!elfNN_aarch64_output_map_sym (osi, AARCH64_MAP_INSN, addr))
7939 return FALSE;
7940 break;
7941
a06ea964 7942 default:
8e2fe09f 7943 abort ();
a06ea964
NC
7944 }
7945
7946 return TRUE;
7947}
7948
7949/* Output mapping symbols for linker generated sections. */
7950
7951static bfd_boolean
cec5225b 7952elfNN_aarch64_output_arch_local_syms (bfd *output_bfd,
a06ea964
NC
7953 struct bfd_link_info *info,
7954 void *finfo,
7955 int (*func) (void *, const char *,
7956 Elf_Internal_Sym *,
7957 asection *,
7958 struct elf_link_hash_entry
7959 *))
7960{
7961 output_arch_syminfo osi;
cec5225b 7962 struct elf_aarch64_link_hash_table *htab;
a06ea964 7963
cec5225b 7964 htab = elf_aarch64_hash_table (info);
a06ea964
NC
7965
7966 osi.finfo = finfo;
7967 osi.info = info;
7968 osi.func = func;
7969
7970 /* Long calls stubs. */
7971 if (htab->stub_bfd && htab->stub_bfd->sections)
7972 {
7973 asection *stub_sec;
7974
7975 for (stub_sec = htab->stub_bfd->sections;
7976 stub_sec != NULL; stub_sec = stub_sec->next)
7977 {
7978 /* Ignore non-stub sections. */
7979 if (!strstr (stub_sec->name, STUB_SUFFIX))
7980 continue;
7981
7982 osi.sec = stub_sec;
7983
7984 osi.sec_shndx = _bfd_elf_section_from_bfd_section
7985 (output_bfd, osi.sec->output_section);
7986
61865519
MS
7987 /* The first instruction in a stub is always a branch. */
7988 if (!elfNN_aarch64_output_map_sym (&osi, AARCH64_MAP_INSN, 0))
7989 return FALSE;
7990
a06ea964
NC
7991 bfd_hash_traverse (&htab->stub_hash_table, aarch64_map_one_stub,
7992 &osi);
7993 }
7994 }
7995
7996 /* Finally, output mapping symbols for the PLT. */
7997 if (!htab->root.splt || htab->root.splt->size == 0)
7998 return TRUE;
7999
a06ea964
NC
8000 osi.sec_shndx = _bfd_elf_section_from_bfd_section
8001 (output_bfd, htab->root.splt->output_section);
8002 osi.sec = htab->root.splt;
8003
73524045 8004 elfNN_aarch64_output_map_sym (&osi, AARCH64_MAP_INSN, 0);
a06ea964
NC
8005
8006 return TRUE;
8007
8008}
8009
8010/* Allocate target specific section data. */
8011
8012static bfd_boolean
cec5225b 8013elfNN_aarch64_new_section_hook (bfd *abfd, asection *sec)
a06ea964
NC
8014{
8015 if (!sec->used_by_bfd)
8016 {
8017 _aarch64_elf_section_data *sdata;
8018 bfd_size_type amt = sizeof (*sdata);
8019
8020 sdata = bfd_zalloc (abfd, amt);
8021 if (sdata == NULL)
8022 return FALSE;
8023 sec->used_by_bfd = sdata;
8024 }
8025
8026 record_section_with_aarch64_elf_section_data (sec);
8027
8028 return _bfd_elf_new_section_hook (abfd, sec);
8029}
8030
8031
8032static void
8033unrecord_section_via_map_over_sections (bfd *abfd ATTRIBUTE_UNUSED,
8034 asection *sec,
8035 void *ignore ATTRIBUTE_UNUSED)
8036{
8037 unrecord_section_with_aarch64_elf_section_data (sec);
8038}
8039
8040static bfd_boolean
cec5225b 8041elfNN_aarch64_close_and_cleanup (bfd *abfd)
a06ea964
NC
8042{
8043 if (abfd->sections)
8044 bfd_map_over_sections (abfd,
8045 unrecord_section_via_map_over_sections, NULL);
8046
8047 return _bfd_elf_close_and_cleanup (abfd);
8048}
8049
8050static bfd_boolean
cec5225b 8051elfNN_aarch64_bfd_free_cached_info (bfd *abfd)
a06ea964
NC
8052{
8053 if (abfd->sections)
8054 bfd_map_over_sections (abfd,
8055 unrecord_section_via_map_over_sections, NULL);
8056
8057 return _bfd_free_cached_info (abfd);
8058}
8059
a06ea964
NC
8060/* Create dynamic sections. This is different from the ARM backend in that
8061 the got, plt, gotplt and their relocation sections are all created in the
8062 standard part of the bfd elf backend. */
8063
8064static bfd_boolean
cec5225b 8065elfNN_aarch64_create_dynamic_sections (bfd *dynobj,
a06ea964
NC
8066 struct bfd_link_info *info)
8067{
cc0efaa8
MS
8068 /* We need to create .got section. */
8069 if (!aarch64_elf_create_got_section (dynobj, info))
8070 return FALSE;
a06ea964 8071
9d19e4fd 8072 return _bfd_elf_create_dynamic_sections (dynobj, info);
a06ea964
NC
8073}
8074
8075
8076/* Allocate space in .plt, .got and associated reloc sections for
8077 dynamic relocs. */
8078
8079static bfd_boolean
cec5225b 8080elfNN_aarch64_allocate_dynrelocs (struct elf_link_hash_entry *h, void *inf)
a06ea964
NC
8081{
8082 struct bfd_link_info *info;
cec5225b
YZ
8083 struct elf_aarch64_link_hash_table *htab;
8084 struct elf_aarch64_link_hash_entry *eh;
a06ea964
NC
8085 struct elf_dyn_relocs *p;
8086
8087 /* An example of a bfd_link_hash_indirect symbol is versioned
8088 symbol. For example: __gxx_personality_v0(bfd_link_hash_indirect)
8089 -> __gxx_personality_v0(bfd_link_hash_defined)
8090
8091 There is no need to process bfd_link_hash_indirect symbols here
8092 because we will also be presented with the concrete instance of
cec5225b 8093 the symbol and elfNN_aarch64_copy_indirect_symbol () will have been
a06ea964 8094 called to copy all relevant data from the generic to the concrete
2d0ca824 8095 symbol instance. */
a06ea964
NC
8096 if (h->root.type == bfd_link_hash_indirect)
8097 return TRUE;
8098
8099 if (h->root.type == bfd_link_hash_warning)
8100 h = (struct elf_link_hash_entry *) h->root.u.i.link;
8101
8102 info = (struct bfd_link_info *) inf;
cec5225b 8103 htab = elf_aarch64_hash_table (info);
a06ea964 8104
1419bbe5
WN
8105 /* Since STT_GNU_IFUNC symbol must go through PLT, we handle it
8106 here if it is defined and referenced in a non-shared object. */
8107 if (h->type == STT_GNU_IFUNC
8108 && h->def_regular)
8109 return TRUE;
8110 else if (htab->root.dynamic_sections_created && h->plt.refcount > 0)
a06ea964
NC
8111 {
8112 /* Make sure this symbol is output as a dynamic symbol.
07d6d2b8 8113 Undefined weak syms won't yet be marked as dynamic. */
ff07562f
JW
8114 if (h->dynindx == -1 && !h->forced_local
8115 && h->root.type == bfd_link_hash_undefweak)
a06ea964
NC
8116 {
8117 if (!bfd_elf_link_record_dynamic_symbol (info, h))
8118 return FALSE;
8119 }
8120
0e1862bb 8121 if (bfd_link_pic (info) || WILL_CALL_FINISH_DYNAMIC_SYMBOL (1, 0, h))
a06ea964
NC
8122 {
8123 asection *s = htab->root.splt;
8124
8125 /* If this is the first .plt entry, make room for the special
8126 first entry. */
8127 if (s->size == 0)
8128 s->size += htab->plt_header_size;
8129
8130 h->plt.offset = s->size;
8131
8132 /* If this symbol is not defined in a regular file, and we are
8133 not generating a shared library, then set the symbol to this
8134 location in the .plt. This is required to make function
8135 pointers compare as equal between the normal executable and
8136 the shared library. */
0e1862bb 8137 if (!bfd_link_pic (info) && !h->def_regular)
a06ea964
NC
8138 {
8139 h->root.u.def.section = s;
8140 h->root.u.def.value = h->plt.offset;
8141 }
8142
8143 /* Make room for this entry. For now we only create the
8144 small model PLT entries. We later need to find a way
8145 of relaxing into these from the large model PLT entries. */
8146 s->size += PLT_SMALL_ENTRY_SIZE;
8147
8148 /* We also need to make an entry in the .got.plt section, which
8149 will be placed in the .got section by the linker script. */
8150 htab->root.sgotplt->size += GOT_ENTRY_SIZE;
8151
8152 /* We also need to make an entry in the .rela.plt section. */
8153 htab->root.srelplt->size += RELOC_SIZE (htab);
8154
8155 /* We need to ensure that all GOT entries that serve the PLT
8156 are consecutive with the special GOT slots [0] [1] and
8157 [2]. Any addtional relocations, such as
8158 R_AARCH64_TLSDESC, must be placed after the PLT related
8159 entries. We abuse the reloc_count such that during
8160 sizing we adjust reloc_count to indicate the number of
8161 PLT related reserved entries. In subsequent phases when
8162 filling in the contents of the reloc entries, PLT related
8163 entries are placed by computing their PLT index (0
8164 .. reloc_count). While other none PLT relocs are placed
8165 at the slot indicated by reloc_count and reloc_count is
8166 updated. */
8167
8168 htab->root.srelplt->reloc_count++;
8169 }
8170 else
8171 {
8172 h->plt.offset = (bfd_vma) - 1;
8173 h->needs_plt = 0;
8174 }
8175 }
8176 else
8177 {
8178 h->plt.offset = (bfd_vma) - 1;
8179 h->needs_plt = 0;
8180 }
8181
cec5225b 8182 eh = (struct elf_aarch64_link_hash_entry *) h;
a06ea964
NC
8183 eh->tlsdesc_got_jump_table_offset = (bfd_vma) - 1;
8184
8185 if (h->got.refcount > 0)
8186 {
8187 bfd_boolean dyn;
cec5225b 8188 unsigned got_type = elf_aarch64_hash_entry (h)->got_type;
a06ea964
NC
8189
8190 h->got.offset = (bfd_vma) - 1;
8191
8192 dyn = htab->root.dynamic_sections_created;
8193
8194 /* Make sure this symbol is output as a dynamic symbol.
07d6d2b8 8195 Undefined weak syms won't yet be marked as dynamic. */
ff07562f
JW
8196 if (dyn && h->dynindx == -1 && !h->forced_local
8197 && h->root.type == bfd_link_hash_undefweak)
a06ea964
NC
8198 {
8199 if (!bfd_elf_link_record_dynamic_symbol (info, h))
8200 return FALSE;
8201 }
8202
8203 if (got_type == GOT_UNKNOWN)
8204 {
8205 }
8206 else if (got_type == GOT_NORMAL)
8207 {
8208 h->got.offset = htab->root.sgot->size;
8209 htab->root.sgot->size += GOT_ENTRY_SIZE;
8210 if ((ELF_ST_VISIBILITY (h->other) == STV_DEFAULT
8211 || h->root.type != bfd_link_hash_undefweak)
0e1862bb 8212 && (bfd_link_pic (info)
a377ae2a
SN
8213 || WILL_CALL_FINISH_DYNAMIC_SYMBOL (dyn, 0, h))
8214 /* Undefined weak symbol in static PIE resolves to 0 without
8215 any dynamic relocations. */
8216 && !UNDEFWEAK_NO_DYNAMIC_RELOC (info, h))
a06ea964
NC
8217 {
8218 htab->root.srelgot->size += RELOC_SIZE (htab);
8219 }
8220 }
8221 else
8222 {
8223 int indx;
8224 if (got_type & GOT_TLSDESC_GD)
8225 {
8226 eh->tlsdesc_got_jump_table_offset =
8227 (htab->root.sgotplt->size
8228 - aarch64_compute_jump_table_size (htab));
8229 htab->root.sgotplt->size += GOT_ENTRY_SIZE * 2;
8230 h->got.offset = (bfd_vma) - 2;
8231 }
8232
8233 if (got_type & GOT_TLS_GD)
8234 {
8235 h->got.offset = htab->root.sgot->size;
8236 htab->root.sgot->size += GOT_ENTRY_SIZE * 2;
8237 }
8238
8239 if (got_type & GOT_TLS_IE)
8240 {
8241 h->got.offset = htab->root.sgot->size;
8242 htab->root.sgot->size += GOT_ENTRY_SIZE;
8243 }
8244
8245 indx = h && h->dynindx != -1 ? h->dynindx : 0;
8246 if ((ELF_ST_VISIBILITY (h->other) == STV_DEFAULT
8247 || h->root.type != bfd_link_hash_undefweak)
6dda7875 8248 && (!bfd_link_executable (info)
a06ea964
NC
8249 || indx != 0
8250 || WILL_CALL_FINISH_DYNAMIC_SYMBOL (dyn, 0, h)))
8251 {
8252 if (got_type & GOT_TLSDESC_GD)
8253 {
8254 htab->root.srelplt->size += RELOC_SIZE (htab);
8255 /* Note reloc_count not incremented here! We have
8256 already adjusted reloc_count for this relocation
8257 type. */
8258
8259 /* TLSDESC PLT is now needed, but not yet determined. */
8260 htab->tlsdesc_plt = (bfd_vma) - 1;
8261 }
8262
8263 if (got_type & GOT_TLS_GD)
8264 htab->root.srelgot->size += RELOC_SIZE (htab) * 2;
8265
8266 if (got_type & GOT_TLS_IE)
8267 htab->root.srelgot->size += RELOC_SIZE (htab);
8268 }
8269 }
8270 }
8271 else
8272 {
8273 h->got.offset = (bfd_vma) - 1;
8274 }
8275
8276 if (eh->dyn_relocs == NULL)
8277 return TRUE;
8278
8279 /* In the shared -Bsymbolic case, discard space allocated for
8280 dynamic pc-relative relocs against symbols which turn out to be
8281 defined in regular objects. For the normal shared case, discard
8282 space for pc-relative relocs that have become local due to symbol
8283 visibility changes. */
8284
0e1862bb 8285 if (bfd_link_pic (info))
a06ea964
NC
8286 {
8287 /* Relocs that use pc_count are those that appear on a call
07d6d2b8
AM
8288 insn, or certain REL relocs that can generated via assembly.
8289 We want calls to protected symbols to resolve directly to the
8290 function rather than going via the plt. If people want
8291 function pointer comparisons to work as expected then they
8292 should avoid writing weird assembly. */
a06ea964
NC
8293 if (SYMBOL_CALLS_LOCAL (info, h))
8294 {
8295 struct elf_dyn_relocs **pp;
8296
8297 for (pp = &eh->dyn_relocs; (p = *pp) != NULL;)
8298 {
8299 p->count -= p->pc_count;
8300 p->pc_count = 0;
8301 if (p->count == 0)
8302 *pp = p->next;
8303 else
8304 pp = &p->next;
8305 }
8306 }
8307
8308 /* Also discard relocs on undefined weak syms with non-default
07d6d2b8 8309 visibility. */
a06ea964
NC
8310 if (eh->dyn_relocs != NULL && h->root.type == bfd_link_hash_undefweak)
8311 {
ddb7fd0f
L
8312 if (ELF_ST_VISIBILITY (h->other) != STV_DEFAULT
8313 || UNDEFWEAK_NO_DYNAMIC_RELOC (info, h))
a06ea964
NC
8314 eh->dyn_relocs = NULL;
8315
8316 /* Make sure undefined weak symbols are output as a dynamic
8317 symbol in PIEs. */
8318 else if (h->dynindx == -1
8319 && !h->forced_local
ff07562f 8320 && h->root.type == bfd_link_hash_undefweak
a06ea964
NC
8321 && !bfd_elf_link_record_dynamic_symbol (info, h))
8322 return FALSE;
8323 }
8324
8325 }
8326 else if (ELIMINATE_COPY_RELOCS)
8327 {
8328 /* For the non-shared case, discard space for relocs against
07d6d2b8
AM
8329 symbols which turn out to need copy relocs or are not
8330 dynamic. */
a06ea964
NC
8331
8332 if (!h->non_got_ref
8333 && ((h->def_dynamic
8334 && !h->def_regular)
8335 || (htab->root.dynamic_sections_created
8336 && (h->root.type == bfd_link_hash_undefweak
8337 || h->root.type == bfd_link_hash_undefined))))
8338 {
8339 /* Make sure this symbol is output as a dynamic symbol.
8340 Undefined weak syms won't yet be marked as dynamic. */
8341 if (h->dynindx == -1
8342 && !h->forced_local
ff07562f 8343 && h->root.type == bfd_link_hash_undefweak
a06ea964
NC
8344 && !bfd_elf_link_record_dynamic_symbol (info, h))
8345 return FALSE;
8346
8347 /* If that succeeded, we know we'll be keeping all the
8348 relocs. */
8349 if (h->dynindx != -1)
8350 goto keep;
8351 }
8352
8353 eh->dyn_relocs = NULL;
8354
8355 keep:;
8356 }
8357
8358 /* Finally, allocate space. */
8359 for (p = eh->dyn_relocs; p != NULL; p = p->next)
8360 {
8361 asection *sreloc;
8362
8363 sreloc = elf_section_data (p->sec)->sreloc;
8364
8365 BFD_ASSERT (sreloc != NULL);
8366
8367 sreloc->size += p->count * RELOC_SIZE (htab);
8368 }
8369
8370 return TRUE;
8371}
8372
1419bbe5
WN
8373/* Allocate space in .plt, .got and associated reloc sections for
8374 ifunc dynamic relocs. */
8375
8376static bfd_boolean
8377elfNN_aarch64_allocate_ifunc_dynrelocs (struct elf_link_hash_entry *h,
8378 void *inf)
8379{
8380 struct bfd_link_info *info;
8381 struct elf_aarch64_link_hash_table *htab;
8382 struct elf_aarch64_link_hash_entry *eh;
8383
8384 /* An example of a bfd_link_hash_indirect symbol is versioned
8385 symbol. For example: __gxx_personality_v0(bfd_link_hash_indirect)
8386 -> __gxx_personality_v0(bfd_link_hash_defined)
8387
8388 There is no need to process bfd_link_hash_indirect symbols here
8389 because we will also be presented with the concrete instance of
8390 the symbol and elfNN_aarch64_copy_indirect_symbol () will have been
8391 called to copy all relevant data from the generic to the concrete
2d0ca824 8392 symbol instance. */
1419bbe5
WN
8393 if (h->root.type == bfd_link_hash_indirect)
8394 return TRUE;
8395
8396 if (h->root.type == bfd_link_hash_warning)
8397 h = (struct elf_link_hash_entry *) h->root.u.i.link;
8398
8399 info = (struct bfd_link_info *) inf;
8400 htab = elf_aarch64_hash_table (info);
8401
8402 eh = (struct elf_aarch64_link_hash_entry *) h;
8403
8404 /* Since STT_GNU_IFUNC symbol must go through PLT, we handle it
8405 here if it is defined and referenced in a non-shared object. */
8406 if (h->type == STT_GNU_IFUNC
8407 && h->def_regular)
8408 return _bfd_elf_allocate_ifunc_dyn_relocs (info, h,
8409 &eh->dyn_relocs,
2df3368d 8410 NULL,
1419bbe5
WN
8411 htab->plt_entry_size,
8412 htab->plt_header_size,
233cc9c1
L
8413 GOT_ENTRY_SIZE,
8414 FALSE);
1419bbe5
WN
8415 return TRUE;
8416}
8417
8418/* Allocate space in .plt, .got and associated reloc sections for
8419 local dynamic relocs. */
8420
8421static bfd_boolean
8422elfNN_aarch64_allocate_local_dynrelocs (void **slot, void *inf)
8423{
8424 struct elf_link_hash_entry *h
8425 = (struct elf_link_hash_entry *) *slot;
8426
8427 if (h->type != STT_GNU_IFUNC
8428 || !h->def_regular
8429 || !h->ref_regular
8430 || !h->forced_local
8431 || h->root.type != bfd_link_hash_defined)
8432 abort ();
8433
8434 return elfNN_aarch64_allocate_dynrelocs (h, inf);
8435}
8436
8437/* Allocate space in .plt, .got and associated reloc sections for
8438 local ifunc dynamic relocs. */
8439
8440static bfd_boolean
8441elfNN_aarch64_allocate_local_ifunc_dynrelocs (void **slot, void *inf)
8442{
8443 struct elf_link_hash_entry *h
8444 = (struct elf_link_hash_entry *) *slot;
8445
8446 if (h->type != STT_GNU_IFUNC
8447 || !h->def_regular
8448 || !h->ref_regular
8449 || !h->forced_local
8450 || h->root.type != bfd_link_hash_defined)
8451 abort ();
8452
8453 return elfNN_aarch64_allocate_ifunc_dynrelocs (h, inf);
8454}
a06ea964 8455
63c1f59d
AM
8456/* Set DF_TEXTREL if we find any dynamic relocs that apply to
8457 read-only sections. */
c2170589
JW
8458
8459static bfd_boolean
63c1f59d 8460maybe_set_textrel (struct elf_link_hash_entry *h, void *info_p)
c2170589 8461{
63c1f59d 8462 asection *sec;
c2170589 8463
63c1f59d
AM
8464 if (h->root.type == bfd_link_hash_indirect)
8465 return TRUE;
c2170589 8466
63c1f59d
AM
8467 sec = readonly_dynrelocs (h);
8468 if (sec != NULL)
8469 {
8470 struct bfd_link_info *info = (struct bfd_link_info *) info_p;
c2170589 8471
63c1f59d
AM
8472 info->flags |= DF_TEXTREL;
8473 info->callbacks->minfo
c1c8c1ef 8474 (_("%pB: dynamic relocation against `%pT' in read-only section `%pA'\n"),
63c1f59d 8475 sec->owner, h->root.root.string, sec);
c2170589 8476
63c1f59d
AM
8477 /* Not an error, just cut short the traversal. */
8478 return FALSE;
c2170589
JW
8479 }
8480 return TRUE;
8481}
8482
a06ea964
NC
8483/* This is the most important function of all . Innocuosly named
8484 though ! */
2d0ca824 8485
a06ea964 8486static bfd_boolean
cec5225b 8487elfNN_aarch64_size_dynamic_sections (bfd *output_bfd ATTRIBUTE_UNUSED,
a06ea964
NC
8488 struct bfd_link_info *info)
8489{
cec5225b 8490 struct elf_aarch64_link_hash_table *htab;
a06ea964
NC
8491 bfd *dynobj;
8492 asection *s;
8493 bfd_boolean relocs;
8494 bfd *ibfd;
8495
cec5225b 8496 htab = elf_aarch64_hash_table ((info));
a06ea964
NC
8497 dynobj = htab->root.dynobj;
8498
8499 BFD_ASSERT (dynobj != NULL);
8500
8501 if (htab->root.dynamic_sections_created)
8502 {
9b8b325a 8503 if (bfd_link_executable (info) && !info->nointerp)
a06ea964
NC
8504 {
8505 s = bfd_get_linker_section (dynobj, ".interp");
8506 if (s == NULL)
8507 abort ();
8508 s->size = sizeof ELF_DYNAMIC_INTERPRETER;
8509 s->contents = (unsigned char *) ELF_DYNAMIC_INTERPRETER;
8510 }
8511 }
8512
8513 /* Set up .got offsets for local syms, and space for local dynamic
8514 relocs. */
c72f2fb2 8515 for (ibfd = info->input_bfds; ibfd != NULL; ibfd = ibfd->link.next)
a06ea964
NC
8516 {
8517 struct elf_aarch64_local_symbol *locals = NULL;
8518 Elf_Internal_Shdr *symtab_hdr;
8519 asection *srel;
8520 unsigned int i;
8521
8522 if (!is_aarch64_elf (ibfd))
8523 continue;
8524
8525 for (s = ibfd->sections; s != NULL; s = s->next)
8526 {
8527 struct elf_dyn_relocs *p;
8528
8529 for (p = (struct elf_dyn_relocs *)
8530 (elf_section_data (s)->local_dynrel); p != NULL; p = p->next)
8531 {
8532 if (!bfd_is_abs_section (p->sec)
8533 && bfd_is_abs_section (p->sec->output_section))
8534 {
8535 /* Input section has been discarded, either because
8536 it is a copy of a linkonce section or due to
8537 linker script /DISCARD/, so we'll be discarding
8538 the relocs too. */
8539 }
8540 else if (p->count != 0)
8541 {
8542 srel = elf_section_data (p->sec)->sreloc;
8543 srel->size += p->count * RELOC_SIZE (htab);
8544 if ((p->sec->output_section->flags & SEC_READONLY) != 0)
8545 info->flags |= DF_TEXTREL;
8546 }
8547 }
8548 }
8549
cec5225b 8550 locals = elf_aarch64_locals (ibfd);
a06ea964
NC
8551 if (!locals)
8552 continue;
8553
8554 symtab_hdr = &elf_symtab_hdr (ibfd);
8555 srel = htab->root.srelgot;
8556 for (i = 0; i < symtab_hdr->sh_info; i++)
8557 {
8558 locals[i].got_offset = (bfd_vma) - 1;
8559 locals[i].tlsdesc_got_jump_table_offset = (bfd_vma) - 1;
8560 if (locals[i].got_refcount > 0)
8561 {
8562 unsigned got_type = locals[i].got_type;
8563 if (got_type & GOT_TLSDESC_GD)
8564 {
8565 locals[i].tlsdesc_got_jump_table_offset =
8566 (htab->root.sgotplt->size
8567 - aarch64_compute_jump_table_size (htab));
8568 htab->root.sgotplt->size += GOT_ENTRY_SIZE * 2;
8569 locals[i].got_offset = (bfd_vma) - 2;
8570 }
8571
8572 if (got_type & GOT_TLS_GD)
8573 {
8574 locals[i].got_offset = htab->root.sgot->size;
8575 htab->root.sgot->size += GOT_ENTRY_SIZE * 2;
8576 }
8577
b53b1bed
JW
8578 if (got_type & GOT_TLS_IE
8579 || got_type & GOT_NORMAL)
a06ea964
NC
8580 {
8581 locals[i].got_offset = htab->root.sgot->size;
8582 htab->root.sgot->size += GOT_ENTRY_SIZE;
8583 }
8584
8585 if (got_type == GOT_UNKNOWN)
8586 {
8587 }
8588
0e1862bb 8589 if (bfd_link_pic (info))
a06ea964
NC
8590 {
8591 if (got_type & GOT_TLSDESC_GD)
8592 {
8593 htab->root.srelplt->size += RELOC_SIZE (htab);
8594 /* Note RELOC_COUNT not incremented here! */
8595 htab->tlsdesc_plt = (bfd_vma) - 1;
8596 }
8597
8598 if (got_type & GOT_TLS_GD)
8599 htab->root.srelgot->size += RELOC_SIZE (htab) * 2;
8600
b53b1bed
JW
8601 if (got_type & GOT_TLS_IE
8602 || got_type & GOT_NORMAL)
a06ea964
NC
8603 htab->root.srelgot->size += RELOC_SIZE (htab);
8604 }
8605 }
8606 else
8607 {
8608 locals[i].got_refcount = (bfd_vma) - 1;
8609 }
8610 }
8611 }
8612
8613
8614 /* Allocate global sym .plt and .got entries, and space for global
8615 sym dynamic relocs. */
cec5225b 8616 elf_link_hash_traverse (&htab->root, elfNN_aarch64_allocate_dynrelocs,
a06ea964
NC
8617 info);
8618
1419bbe5
WN
8619 /* Allocate global ifunc sym .plt and .got entries, and space for global
8620 ifunc sym dynamic relocs. */
8621 elf_link_hash_traverse (&htab->root, elfNN_aarch64_allocate_ifunc_dynrelocs,
8622 info);
8623
8624 /* Allocate .plt and .got entries, and space for local symbols. */
8625 htab_traverse (htab->loc_hash_table,
8626 elfNN_aarch64_allocate_local_dynrelocs,
8627 info);
8628
8629 /* Allocate .plt and .got entries, and space for local ifunc symbols. */
8630 htab_traverse (htab->loc_hash_table,
8631 elfNN_aarch64_allocate_local_ifunc_dynrelocs,
8632 info);
a06ea964
NC
8633
8634 /* For every jump slot reserved in the sgotplt, reloc_count is
8635 incremented. However, when we reserve space for TLS descriptors,
8636 it's not incremented, so in order to compute the space reserved
8637 for them, it suffices to multiply the reloc count by the jump
8638 slot size. */
8639
8640 if (htab->root.srelplt)
8847944f 8641 htab->sgotplt_jump_table_size = aarch64_compute_jump_table_size (htab);
a06ea964
NC
8642
8643 if (htab->tlsdesc_plt)
8644 {
8645 if (htab->root.splt->size == 0)
8646 htab->root.splt->size += PLT_ENTRY_SIZE;
8647
8648 htab->tlsdesc_plt = htab->root.splt->size;
8649 htab->root.splt->size += PLT_TLSDESC_ENTRY_SIZE;
8650
8651 /* If we're not using lazy TLS relocations, don't generate the
07d6d2b8 8652 GOT entry required. */
a06ea964
NC
8653 if (!(info->flags & DF_BIND_NOW))
8654 {
8655 htab->dt_tlsdesc_got = htab->root.sgot->size;
8656 htab->root.sgot->size += GOT_ENTRY_SIZE;
8657 }
8658 }
8659
68fcca92 8660 /* Init mapping symbols information to use later to distingush between
4106101c
MS
8661 code and data while scanning for errata. */
8662 if (htab->fix_erratum_835769 || htab->fix_erratum_843419)
68fcca92
JW
8663 for (ibfd = info->input_bfds; ibfd != NULL; ibfd = ibfd->link.next)
8664 {
8665 if (!is_aarch64_elf (ibfd))
8666 continue;
8667 bfd_elfNN_aarch64_init_maps (ibfd);
8668 }
8669
a06ea964
NC
8670 /* We now have determined the sizes of the various dynamic sections.
8671 Allocate memory for them. */
8672 relocs = FALSE;
8673 for (s = dynobj->sections; s != NULL; s = s->next)
8674 {
8675 if ((s->flags & SEC_LINKER_CREATED) == 0)
8676 continue;
8677
8678 if (s == htab->root.splt
8679 || s == htab->root.sgot
8680 || s == htab->root.sgotplt
8681 || s == htab->root.iplt
9d19e4fd 8682 || s == htab->root.igotplt
5474d94f
AM
8683 || s == htab->root.sdynbss
8684 || s == htab->root.sdynrelro)
a06ea964
NC
8685 {
8686 /* Strip this section if we don't need it; see the
8687 comment below. */
8688 }
8689 else if (CONST_STRNEQ (bfd_get_section_name (dynobj, s), ".rela"))
8690 {
8691 if (s->size != 0 && s != htab->root.srelplt)
8692 relocs = TRUE;
8693
8694 /* We use the reloc_count field as a counter if we need
8695 to copy relocs into the output file. */
8696 if (s != htab->root.srelplt)
8697 s->reloc_count = 0;
8698 }
8699 else
8700 {
8701 /* It's not one of our sections, so don't allocate space. */
8702 continue;
8703 }
8704
8705 if (s->size == 0)
8706 {
8707 /* If we don't need this section, strip it from the
8708 output file. This is mostly to handle .rela.bss and
8709 .rela.plt. We must create both sections in
8710 create_dynamic_sections, because they must be created
8711 before the linker maps input sections to output
8712 sections. The linker does that before
8713 adjust_dynamic_symbol is called, and it is that
8714 function which decides whether anything needs to go
8715 into these sections. */
a06ea964
NC
8716 s->flags |= SEC_EXCLUDE;
8717 continue;
8718 }
8719
8720 if ((s->flags & SEC_HAS_CONTENTS) == 0)
8721 continue;
8722
8723 /* Allocate memory for the section contents. We use bfd_zalloc
07d6d2b8
AM
8724 here in case unused entries are not reclaimed before the
8725 section's contents are written out. This should not happen,
8726 but this way if it does, we get a R_AARCH64_NONE reloc instead
8727 of garbage. */
a06ea964
NC
8728 s->contents = (bfd_byte *) bfd_zalloc (dynobj, s->size);
8729 if (s->contents == NULL)
8730 return FALSE;
8731 }
8732
8733 if (htab->root.dynamic_sections_created)
8734 {
8735 /* Add some entries to the .dynamic section. We fill in the
07d6d2b8
AM
8736 values later, in elfNN_aarch64_finish_dynamic_sections, but we
8737 must add the entries now so that we get the correct size for
8738 the .dynamic section. The DT_DEBUG entry is filled in by the
8739 dynamic linker and used by the debugger. */
a06ea964
NC
8740#define add_dynamic_entry(TAG, VAL) \
8741 _bfd_elf_add_dynamic_entry (info, TAG, VAL)
8742
0e1862bb 8743 if (bfd_link_executable (info))
a06ea964
NC
8744 {
8745 if (!add_dynamic_entry (DT_DEBUG, 0))
8746 return FALSE;
8747 }
8748
8749 if (htab->root.splt->size != 0)
8750 {
8751 if (!add_dynamic_entry (DT_PLTGOT, 0)
8752 || !add_dynamic_entry (DT_PLTRELSZ, 0)
8753 || !add_dynamic_entry (DT_PLTREL, DT_RELA)
8754 || !add_dynamic_entry (DT_JMPREL, 0))
8755 return FALSE;
8756
8757 if (htab->tlsdesc_plt
8758 && (!add_dynamic_entry (DT_TLSDESC_PLT, 0)
8759 || !add_dynamic_entry (DT_TLSDESC_GOT, 0)))
8760 return FALSE;
8761 }
8762
8763 if (relocs)
8764 {
8765 if (!add_dynamic_entry (DT_RELA, 0)
8766 || !add_dynamic_entry (DT_RELASZ, 0)
8767 || !add_dynamic_entry (DT_RELAENT, RELOC_SIZE (htab)))
8768 return FALSE;
8769
8770 /* If any dynamic relocs apply to a read-only section,
8771 then we need a DT_TEXTREL entry. */
c2170589 8772 if ((info->flags & DF_TEXTREL) == 0)
63c1f59d 8773 elf_link_hash_traverse (&htab->root, maybe_set_textrel, info);
c2170589 8774
a06ea964
NC
8775 if ((info->flags & DF_TEXTREL) != 0)
8776 {
8777 if (!add_dynamic_entry (DT_TEXTREL, 0))
8778 return FALSE;
8779 }
8780 }
8781 }
8782#undef add_dynamic_entry
8783
8784 return TRUE;
a06ea964
NC
8785}
8786
8787static inline void
caed7120
YZ
8788elf_aarch64_update_plt_entry (bfd *output_bfd,
8789 bfd_reloc_code_real_type r_type,
8790 bfd_byte *plt_entry, bfd_vma value)
a06ea964 8791{
caed7120
YZ
8792 reloc_howto_type *howto = elfNN_aarch64_howto_from_bfd_reloc (r_type);
8793
1d75a8e2
NC
8794 /* FIXME: We should check the return value from this function call. */
8795 (void) _bfd_aarch64_elf_put_addend (output_bfd, plt_entry, r_type, howto, value);
a06ea964
NC
8796}
8797
8798static void
cec5225b
YZ
8799elfNN_aarch64_create_small_pltn_entry (struct elf_link_hash_entry *h,
8800 struct elf_aarch64_link_hash_table
1419bbe5
WN
8801 *htab, bfd *output_bfd,
8802 struct bfd_link_info *info)
a06ea964
NC
8803{
8804 bfd_byte *plt_entry;
8805 bfd_vma plt_index;
8806 bfd_vma got_offset;
8807 bfd_vma gotplt_entry_address;
8808 bfd_vma plt_entry_address;
8809 Elf_Internal_Rela rela;
8810 bfd_byte *loc;
1419bbe5
WN
8811 asection *plt, *gotplt, *relplt;
8812
8813 /* When building a static executable, use .iplt, .igot.plt and
8814 .rela.iplt sections for STT_GNU_IFUNC symbols. */
8815 if (htab->root.splt != NULL)
8816 {
8817 plt = htab->root.splt;
8818 gotplt = htab->root.sgotplt;
8819 relplt = htab->root.srelplt;
8820 }
8821 else
8822 {
8823 plt = htab->root.iplt;
8824 gotplt = htab->root.igotplt;
8825 relplt = htab->root.irelplt;
8826 }
8827
8828 /* Get the index in the procedure linkage table which
8829 corresponds to this symbol. This is the index of this symbol
8830 in all the symbols for which we are making plt entries. The
8831 first entry in the procedure linkage table is reserved.
a06ea964 8832
1419bbe5
WN
8833 Get the offset into the .got table of the entry that
8834 corresponds to this function. Each .got entry is GOT_ENTRY_SIZE
8835 bytes. The first three are reserved for the dynamic linker.
692e2b8b 8836
1419bbe5
WN
8837 For static executables, we don't reserve anything. */
8838
8839 if (plt == htab->root.splt)
8840 {
8841 plt_index = (h->plt.offset - htab->plt_header_size) / htab->plt_entry_size;
8842 got_offset = (plt_index + 3) * GOT_ENTRY_SIZE;
8843 }
8844 else
8845 {
8846 plt_index = h->plt.offset / htab->plt_entry_size;
8847 got_offset = plt_index * GOT_ENTRY_SIZE;
8848 }
8849
8850 plt_entry = plt->contents + h->plt.offset;
8851 plt_entry_address = plt->output_section->vma
f44a1f8e 8852 + plt->output_offset + h->plt.offset;
1419bbe5
WN
8853 gotplt_entry_address = gotplt->output_section->vma +
8854 gotplt->output_offset + got_offset;
a06ea964
NC
8855
8856 /* Copy in the boiler-plate for the PLTn entry. */
cec5225b 8857 memcpy (plt_entry, elfNN_aarch64_small_plt_entry, PLT_SMALL_ENTRY_SIZE);
a06ea964
NC
8858
8859 /* Fill in the top 21 bits for this: ADRP x16, PLT_GOT + n * 8.
8860 ADRP: ((PG(S+A)-PG(P)) >> 12) & 0x1fffff */
caed7120
YZ
8861 elf_aarch64_update_plt_entry (output_bfd, BFD_RELOC_AARCH64_ADR_HI21_PCREL,
8862 plt_entry,
8863 PG (gotplt_entry_address) -
8864 PG (plt_entry_address));
a06ea964
NC
8865
8866 /* Fill in the lo12 bits for the load from the pltgot. */
caed7120
YZ
8867 elf_aarch64_update_plt_entry (output_bfd, BFD_RELOC_AARCH64_LDSTNN_LO12,
8868 plt_entry + 4,
8869 PG_OFFSET (gotplt_entry_address));
a06ea964 8870
9aff4b7a 8871 /* Fill in the lo12 bits for the add from the pltgot entry. */
caed7120
YZ
8872 elf_aarch64_update_plt_entry (output_bfd, BFD_RELOC_AARCH64_ADD_LO12,
8873 plt_entry + 8,
8874 PG_OFFSET (gotplt_entry_address));
a06ea964
NC
8875
8876 /* All the GOTPLT Entries are essentially initialized to PLT0. */
cec5225b 8877 bfd_put_NN (output_bfd,
1419bbe5
WN
8878 plt->output_section->vma + plt->output_offset,
8879 gotplt->contents + got_offset);
a06ea964 8880
a06ea964 8881 rela.r_offset = gotplt_entry_address;
1419bbe5
WN
8882
8883 if (h->dynindx == -1
0e1862bb 8884 || ((bfd_link_executable (info)
1419bbe5
WN
8885 || ELF_ST_VISIBILITY (h->other) != STV_DEFAULT)
8886 && h->def_regular
8887 && h->type == STT_GNU_IFUNC))
8888 {
8889 /* If an STT_GNU_IFUNC symbol is locally defined, generate
8890 R_AARCH64_IRELATIVE instead of R_AARCH64_JUMP_SLOT. */
8891 rela.r_info = ELFNN_R_INFO (0, AARCH64_R (IRELATIVE));
8892 rela.r_addend = (h->root.u.def.value
8893 + h->root.u.def.section->output_section->vma
8894 + h->root.u.def.section->output_offset);
8895 }
8896 else
8897 {
8898 /* Fill in the entry in the .rela.plt section. */
8899 rela.r_info = ELFNN_R_INFO (h->dynindx, AARCH64_R (JUMP_SLOT));
8900 rela.r_addend = 0;
8901 }
a06ea964
NC
8902
8903 /* Compute the relocation entry to used based on PLT index and do
8904 not adjust reloc_count. The reloc_count has already been adjusted
8905 to account for this entry. */
1419bbe5 8906 loc = relplt->contents + plt_index * RELOC_SIZE (htab);
cec5225b 8907 bfd_elfNN_swap_reloca_out (output_bfd, &rela, loc);
a06ea964
NC
8908}
8909
8910/* Size sections even though they're not dynamic. We use it to setup
8911 _TLS_MODULE_BASE_, if needed. */
8912
8913static bfd_boolean
cec5225b 8914elfNN_aarch64_always_size_sections (bfd *output_bfd,
a06ea964
NC
8915 struct bfd_link_info *info)
8916{
8917 asection *tls_sec;
8918
0e1862bb 8919 if (bfd_link_relocatable (info))
a06ea964
NC
8920 return TRUE;
8921
8922 tls_sec = elf_hash_table (info)->tls_sec;
8923
8924 if (tls_sec)
8925 {
8926 struct elf_link_hash_entry *tlsbase;
8927
8928 tlsbase = elf_link_hash_lookup (elf_hash_table (info),
8929 "_TLS_MODULE_BASE_", TRUE, TRUE, FALSE);
8930
8931 if (tlsbase)
8932 {
8933 struct bfd_link_hash_entry *h = NULL;
8934 const struct elf_backend_data *bed =
8935 get_elf_backend_data (output_bfd);
8936
8937 if (!(_bfd_generic_link_add_one_symbol
8938 (info, output_bfd, "_TLS_MODULE_BASE_", BSF_LOCAL,
8939 tls_sec, 0, NULL, FALSE, bed->collect, &h)))
8940 return FALSE;
8941
8942 tlsbase->type = STT_TLS;
8943 tlsbase = (struct elf_link_hash_entry *) h;
8944 tlsbase->def_regular = 1;
8945 tlsbase->other = STV_HIDDEN;
8946 (*bed->elf_backend_hide_symbol) (info, tlsbase, TRUE);
8947 }
8948 }
8949
8950 return TRUE;
8951}
8952
8953/* Finish up dynamic symbol handling. We set the contents of various
8954 dynamic sections here. */
2d0ca824 8955
a06ea964 8956static bfd_boolean
cec5225b 8957elfNN_aarch64_finish_dynamic_symbol (bfd *output_bfd,
a06ea964
NC
8958 struct bfd_link_info *info,
8959 struct elf_link_hash_entry *h,
8960 Elf_Internal_Sym *sym)
8961{
cec5225b
YZ
8962 struct elf_aarch64_link_hash_table *htab;
8963 htab = elf_aarch64_hash_table (info);
a06ea964
NC
8964
8965 if (h->plt.offset != (bfd_vma) - 1)
8966 {
1419bbe5
WN
8967 asection *plt, *gotplt, *relplt;
8968
a06ea964 8969 /* This symbol has an entry in the procedure linkage table. Set
07d6d2b8 8970 it up. */
a06ea964 8971
1419bbe5
WN
8972 /* When building a static executable, use .iplt, .igot.plt and
8973 .rela.iplt sections for STT_GNU_IFUNC symbols. */
8974 if (htab->root.splt != NULL)
8975 {
8976 plt = htab->root.splt;
8977 gotplt = htab->root.sgotplt;
8978 relplt = htab->root.srelplt;
8979 }
8980 else
8981 {
8982 plt = htab->root.iplt;
8983 gotplt = htab->root.igotplt;
8984 relplt = htab->root.irelplt;
8985 }
8986
8987 /* This symbol has an entry in the procedure linkage table. Set
8988 it up. */
8989 if ((h->dynindx == -1
0e1862bb 8990 && !((h->forced_local || bfd_link_executable (info))
1419bbe5
WN
8991 && h->def_regular
8992 && h->type == STT_GNU_IFUNC))
8993 || plt == NULL
8994 || gotplt == NULL
8995 || relplt == NULL)
f955cccf 8996 return FALSE;
a06ea964 8997
1419bbe5 8998 elfNN_aarch64_create_small_pltn_entry (h, htab, output_bfd, info);
a06ea964
NC
8999 if (!h->def_regular)
9000 {
9001 /* Mark the symbol as undefined, rather than as defined in
46b87d49 9002 the .plt section. */
a06ea964 9003 sym->st_shndx = SHN_UNDEF;
46b87d49
WN
9004 /* If the symbol is weak we need to clear the value.
9005 Otherwise, the PLT entry would provide a definition for
9006 the symbol even if the symbol wasn't defined anywhere,
9007 and so the symbol would never be NULL. Leave the value if
9008 there were any relocations where pointer equality matters
9009 (this is a clue for the dynamic linker, to make function
9010 pointer comparisons work between an application and shared
9011 library). */
9012 if (!h->ref_regular_nonweak || !h->pointer_equality_needed)
9013 sym->st_value = 0;
a06ea964
NC
9014 }
9015 }
9016
9017 if (h->got.offset != (bfd_vma) - 1
a377ae2a
SN
9018 && elf_aarch64_hash_entry (h)->got_type == GOT_NORMAL
9019 /* Undefined weak symbol in static PIE resolves to 0 without
9020 any dynamic relocations. */
9021 && !UNDEFWEAK_NO_DYNAMIC_RELOC (info, h))
a06ea964
NC
9022 {
9023 Elf_Internal_Rela rela;
9024 bfd_byte *loc;
9025
9026 /* This symbol has an entry in the global offset table. Set it
07d6d2b8 9027 up. */
a06ea964
NC
9028 if (htab->root.sgot == NULL || htab->root.srelgot == NULL)
9029 abort ();
9030
9031 rela.r_offset = (htab->root.sgot->output_section->vma
9032 + htab->root.sgot->output_offset
9033 + (h->got.offset & ~(bfd_vma) 1));
9034
49206388
WN
9035 if (h->def_regular
9036 && h->type == STT_GNU_IFUNC)
9037 {
0e1862bb 9038 if (bfd_link_pic (info))
49206388
WN
9039 {
9040 /* Generate R_AARCH64_GLOB_DAT. */
9041 goto do_glob_dat;
9042 }
9043 else
9044 {
9045 asection *plt;
9046
9047 if (!h->pointer_equality_needed)
9048 abort ();
9049
9050 /* For non-shared object, we can't use .got.plt, which
9051 contains the real function address if we need pointer
9052 equality. We load the GOT entry with the PLT entry. */
9053 plt = htab->root.splt ? htab->root.splt : htab->root.iplt;
9054 bfd_put_NN (output_bfd, (plt->output_section->vma
9055 + plt->output_offset
9056 + h->plt.offset),
9057 htab->root.sgot->contents
9058 + (h->got.offset & ~(bfd_vma) 1));
9059 return TRUE;
9060 }
9061 }
0e1862bb 9062 else if (bfd_link_pic (info) && SYMBOL_REFERENCES_LOCAL (info, h))
a06ea964 9063 {
0ee3a6db 9064 if (!(h->def_regular || ELF_COMMON_DEF_P (h)))
a06ea964
NC
9065 return FALSE;
9066
9067 BFD_ASSERT ((h->got.offset & 1) != 0);
a6bb11b2 9068 rela.r_info = ELFNN_R_INFO (0, AARCH64_R (RELATIVE));
a06ea964
NC
9069 rela.r_addend = (h->root.u.def.value
9070 + h->root.u.def.section->output_section->vma
9071 + h->root.u.def.section->output_offset);
9072 }
9073 else
9074 {
49206388 9075do_glob_dat:
a06ea964 9076 BFD_ASSERT ((h->got.offset & 1) == 0);
cec5225b 9077 bfd_put_NN (output_bfd, (bfd_vma) 0,
a06ea964 9078 htab->root.sgot->contents + h->got.offset);
a6bb11b2 9079 rela.r_info = ELFNN_R_INFO (h->dynindx, AARCH64_R (GLOB_DAT));
a06ea964
NC
9080 rela.r_addend = 0;
9081 }
9082
9083 loc = htab->root.srelgot->contents;
9084 loc += htab->root.srelgot->reloc_count++ * RELOC_SIZE (htab);
cec5225b 9085 bfd_elfNN_swap_reloca_out (output_bfd, &rela, loc);
a06ea964
NC
9086 }
9087
9088 if (h->needs_copy)
9089 {
9090 Elf_Internal_Rela rela;
5474d94f 9091 asection *s;
a06ea964
NC
9092 bfd_byte *loc;
9093
9094 /* This symbol needs a copy reloc. Set it up. */
a06ea964
NC
9095 if (h->dynindx == -1
9096 || (h->root.type != bfd_link_hash_defined
9097 && h->root.type != bfd_link_hash_defweak)
9d19e4fd 9098 || htab->root.srelbss == NULL)
a06ea964
NC
9099 abort ();
9100
9101 rela.r_offset = (h->root.u.def.value
9102 + h->root.u.def.section->output_section->vma
9103 + h->root.u.def.section->output_offset);
a6bb11b2 9104 rela.r_info = ELFNN_R_INFO (h->dynindx, AARCH64_R (COPY));
a06ea964 9105 rela.r_addend = 0;
afbf7e8e 9106 if (h->root.u.def.section == htab->root.sdynrelro)
5474d94f
AM
9107 s = htab->root.sreldynrelro;
9108 else
9109 s = htab->root.srelbss;
9110 loc = s->contents + s->reloc_count++ * RELOC_SIZE (htab);
cec5225b 9111 bfd_elfNN_swap_reloca_out (output_bfd, &rela, loc);
a06ea964
NC
9112 }
9113
9114 /* Mark _DYNAMIC and _GLOBAL_OFFSET_TABLE_ as absolute. SYM may
9115 be NULL for local symbols. */
9116 if (sym != NULL
9637f6ef 9117 && (h == elf_hash_table (info)->hdynamic
a06ea964
NC
9118 || h == elf_hash_table (info)->hgot))
9119 sym->st_shndx = SHN_ABS;
9120
9121 return TRUE;
9122}
9123
1419bbe5
WN
9124/* Finish up local dynamic symbol handling. We set the contents of
9125 various dynamic sections here. */
9126
9127static bfd_boolean
9128elfNN_aarch64_finish_local_dynamic_symbol (void **slot, void *inf)
9129{
9130 struct elf_link_hash_entry *h
9131 = (struct elf_link_hash_entry *) *slot;
9132 struct bfd_link_info *info
9133 = (struct bfd_link_info *) inf;
9134
9135 return elfNN_aarch64_finish_dynamic_symbol (info->output_bfd,
9136 info, h, NULL);
9137}
9138
a06ea964 9139static void
cec5225b
YZ
9140elfNN_aarch64_init_small_plt0_entry (bfd *output_bfd ATTRIBUTE_UNUSED,
9141 struct elf_aarch64_link_hash_table
a06ea964
NC
9142 *htab)
9143{
9144 /* Fill in PLT0. Fixme:RR Note this doesn't distinguish between
9145 small and large plts and at the minute just generates
9146 the small PLT. */
9147
cec5225b 9148 /* PLT0 of the small PLT looks like this in ELF64 -
a06ea964
NC
9149 stp x16, x30, [sp, #-16]! // Save the reloc and lr on stack.
9150 adrp x16, PLT_GOT + 16 // Get the page base of the GOTPLT
9151 ldr x17, [x16, #:lo12:PLT_GOT+16] // Load the address of the
9152 // symbol resolver
9153 add x16, x16, #:lo12:PLT_GOT+16 // Load the lo12 bits of the
9154 // GOTPLT entry for this.
9155 br x17
cec5225b 9156 PLT0 will be slightly different in ELF32 due to different got entry
2d0ca824 9157 size. */
caed7120 9158 bfd_vma plt_got_2nd_ent; /* Address of GOT[2]. */
a06ea964
NC
9159 bfd_vma plt_base;
9160
9161
cec5225b 9162 memcpy (htab->root.splt->contents, elfNN_aarch64_small_plt0_entry,
a06ea964
NC
9163 PLT_ENTRY_SIZE);
9164 elf_section_data (htab->root.splt->output_section)->this_hdr.sh_entsize =
9165 PLT_ENTRY_SIZE;
9166
caed7120
YZ
9167 plt_got_2nd_ent = (htab->root.sgotplt->output_section->vma
9168 + htab->root.sgotplt->output_offset
9169 + GOT_ENTRY_SIZE * 2);
a06ea964
NC
9170
9171 plt_base = htab->root.splt->output_section->vma +
f44a1f8e 9172 htab->root.splt->output_offset;
a06ea964
NC
9173
9174 /* Fill in the top 21 bits for this: ADRP x16, PLT_GOT + n * 8.
9175 ADRP: ((PG(S+A)-PG(P)) >> 12) & 0x1fffff */
caed7120
YZ
9176 elf_aarch64_update_plt_entry (output_bfd, BFD_RELOC_AARCH64_ADR_HI21_PCREL,
9177 htab->root.splt->contents + 4,
9178 PG (plt_got_2nd_ent) - PG (plt_base + 4));
a06ea964 9179
caed7120
YZ
9180 elf_aarch64_update_plt_entry (output_bfd, BFD_RELOC_AARCH64_LDSTNN_LO12,
9181 htab->root.splt->contents + 8,
9182 PG_OFFSET (plt_got_2nd_ent));
a06ea964 9183
caed7120
YZ
9184 elf_aarch64_update_plt_entry (output_bfd, BFD_RELOC_AARCH64_ADD_LO12,
9185 htab->root.splt->contents + 12,
9186 PG_OFFSET (plt_got_2nd_ent));
a06ea964
NC
9187}
9188
9189static bfd_boolean
cec5225b 9190elfNN_aarch64_finish_dynamic_sections (bfd *output_bfd,
a06ea964
NC
9191 struct bfd_link_info *info)
9192{
cec5225b 9193 struct elf_aarch64_link_hash_table *htab;
a06ea964
NC
9194 bfd *dynobj;
9195 asection *sdyn;
9196
cec5225b 9197 htab = elf_aarch64_hash_table (info);
a06ea964
NC
9198 dynobj = htab->root.dynobj;
9199 sdyn = bfd_get_linker_section (dynobj, ".dynamic");
9200
9201 if (htab->root.dynamic_sections_created)
9202 {
cec5225b 9203 ElfNN_External_Dyn *dyncon, *dynconend;
a06ea964
NC
9204
9205 if (sdyn == NULL || htab->root.sgot == NULL)
9206 abort ();
9207
cec5225b
YZ
9208 dyncon = (ElfNN_External_Dyn *) sdyn->contents;
9209 dynconend = (ElfNN_External_Dyn *) (sdyn->contents + sdyn->size);
a06ea964
NC
9210 for (; dyncon < dynconend; dyncon++)
9211 {
9212 Elf_Internal_Dyn dyn;
9213 asection *s;
9214
cec5225b 9215 bfd_elfNN_swap_dyn_in (dynobj, dyncon, &dyn);
a06ea964
NC
9216
9217 switch (dyn.d_tag)
9218 {
9219 default:
9220 continue;
9221
9222 case DT_PLTGOT:
9223 s = htab->root.sgotplt;
9224 dyn.d_un.d_ptr = s->output_section->vma + s->output_offset;
9225 break;
9226
9227 case DT_JMPREL:
4ade44b7
AM
9228 s = htab->root.srelplt;
9229 dyn.d_un.d_ptr = s->output_section->vma + s->output_offset;
a06ea964
NC
9230 break;
9231
9232 case DT_PLTRELSZ:
c955de36 9233 s = htab->root.srelplt;
a06ea964
NC
9234 dyn.d_un.d_val = s->size;
9235 break;
9236
a06ea964
NC
9237 case DT_TLSDESC_PLT:
9238 s = htab->root.splt;
9239 dyn.d_un.d_ptr = s->output_section->vma + s->output_offset
9240 + htab->tlsdesc_plt;
9241 break;
9242
9243 case DT_TLSDESC_GOT:
9244 s = htab->root.sgot;
9245 dyn.d_un.d_ptr = s->output_section->vma + s->output_offset
9246 + htab->dt_tlsdesc_got;
9247 break;
9248 }
9249
cec5225b 9250 bfd_elfNN_swap_dyn_out (output_bfd, &dyn, dyncon);
a06ea964
NC
9251 }
9252
9253 }
9254
9255 /* Fill in the special first entry in the procedure linkage table. */
9256 if (htab->root.splt && htab->root.splt->size > 0)
9257 {
cec5225b 9258 elfNN_aarch64_init_small_plt0_entry (output_bfd, htab);
a06ea964
NC
9259
9260 elf_section_data (htab->root.splt->output_section)->
9261 this_hdr.sh_entsize = htab->plt_entry_size;
9262
9263
9264 if (htab->tlsdesc_plt)
9265 {
cec5225b 9266 bfd_put_NN (output_bfd, (bfd_vma) 0,
a06ea964
NC
9267 htab->root.sgot->contents + htab->dt_tlsdesc_got);
9268
9269 memcpy (htab->root.splt->contents + htab->tlsdesc_plt,
cec5225b
YZ
9270 elfNN_aarch64_tlsdesc_small_plt_entry,
9271 sizeof (elfNN_aarch64_tlsdesc_small_plt_entry));
a06ea964
NC
9272
9273 {
9274 bfd_vma adrp1_addr =
9275 htab->root.splt->output_section->vma
9276 + htab->root.splt->output_offset + htab->tlsdesc_plt + 4;
9277
caed7120 9278 bfd_vma adrp2_addr = adrp1_addr + 4;
a06ea964
NC
9279
9280 bfd_vma got_addr =
9281 htab->root.sgot->output_section->vma
9282 + htab->root.sgot->output_offset;
9283
9284 bfd_vma pltgot_addr =
9285 htab->root.sgotplt->output_section->vma
9286 + htab->root.sgotplt->output_offset;
9287
9288 bfd_vma dt_tlsdesc_got = got_addr + htab->dt_tlsdesc_got;
caed7120
YZ
9289
9290 bfd_byte *plt_entry =
9291 htab->root.splt->contents + htab->tlsdesc_plt;
a06ea964
NC
9292
9293 /* adrp x2, DT_TLSDESC_GOT */
caed7120
YZ
9294 elf_aarch64_update_plt_entry (output_bfd,
9295 BFD_RELOC_AARCH64_ADR_HI21_PCREL,
9296 plt_entry + 4,
9297 (PG (dt_tlsdesc_got)
9298 - PG (adrp1_addr)));
a06ea964
NC
9299
9300 /* adrp x3, 0 */
caed7120
YZ
9301 elf_aarch64_update_plt_entry (output_bfd,
9302 BFD_RELOC_AARCH64_ADR_HI21_PCREL,
9303 plt_entry + 8,
9304 (PG (pltgot_addr)
9305 - PG (adrp2_addr)));
a06ea964
NC
9306
9307 /* ldr x2, [x2, #0] */
caed7120
YZ
9308 elf_aarch64_update_plt_entry (output_bfd,
9309 BFD_RELOC_AARCH64_LDSTNN_LO12,
9310 plt_entry + 12,
9311 PG_OFFSET (dt_tlsdesc_got));
a06ea964
NC
9312
9313 /* add x3, x3, 0 */
caed7120
YZ
9314 elf_aarch64_update_plt_entry (output_bfd,
9315 BFD_RELOC_AARCH64_ADD_LO12,
9316 plt_entry + 16,
9317 PG_OFFSET (pltgot_addr));
a06ea964
NC
9318 }
9319 }
9320 }
9321
9322 if (htab->root.sgotplt)
9323 {
9324 if (bfd_is_abs_section (htab->root.sgotplt->output_section))
9325 {
4eca0228 9326 _bfd_error_handler
871b3ab2 9327 (_("discarded output section: `%pA'"), htab->root.sgotplt);
a06ea964
NC
9328 return FALSE;
9329 }
9330
9331 /* Fill in the first three entries in the global offset table. */
9332 if (htab->root.sgotplt->size > 0)
9333 {
8db339a6
MS
9334 bfd_put_NN (output_bfd, (bfd_vma) 0, htab->root.sgotplt->contents);
9335
a06ea964 9336 /* Write GOT[1] and GOT[2], needed for the dynamic linker. */
cec5225b 9337 bfd_put_NN (output_bfd,
a06ea964
NC
9338 (bfd_vma) 0,
9339 htab->root.sgotplt->contents + GOT_ENTRY_SIZE);
cec5225b 9340 bfd_put_NN (output_bfd,
a06ea964
NC
9341 (bfd_vma) 0,
9342 htab->root.sgotplt->contents + GOT_ENTRY_SIZE * 2);
9343 }
9344
8db339a6
MS
9345 if (htab->root.sgot)
9346 {
9347 if (htab->root.sgot->size > 0)
9348 {
9349 bfd_vma addr =
9350 sdyn ? sdyn->output_section->vma + sdyn->output_offset : 0;
9351 bfd_put_NN (output_bfd, addr, htab->root.sgot->contents);
9352 }
9353 }
9354
a06ea964
NC
9355 elf_section_data (htab->root.sgotplt->output_section)->
9356 this_hdr.sh_entsize = GOT_ENTRY_SIZE;
9357 }
9358
9359 if (htab->root.sgot && htab->root.sgot->size > 0)
9360 elf_section_data (htab->root.sgot->output_section)->this_hdr.sh_entsize
9361 = GOT_ENTRY_SIZE;
9362
1419bbe5
WN
9363 /* Fill PLT and GOT entries for local STT_GNU_IFUNC symbols. */
9364 htab_traverse (htab->loc_hash_table,
9365 elfNN_aarch64_finish_local_dynamic_symbol,
9366 info);
9367
a06ea964
NC
9368 return TRUE;
9369}
9370
9371/* Return address for Ith PLT stub in section PLT, for relocation REL
9372 or (bfd_vma) -1 if it should not be included. */
9373
9374static bfd_vma
cec5225b 9375elfNN_aarch64_plt_sym_val (bfd_vma i, const asection *plt,
a06ea964
NC
9376 const arelent *rel ATTRIBUTE_UNUSED)
9377{
9378 return plt->vma + PLT_ENTRY_SIZE + i * PLT_SMALL_ENTRY_SIZE;
9379}
9380
d691934d
NC
9381/* Returns TRUE if NAME is an AArch64 mapping symbol.
9382 The ARM ELF standard defines $x (for A64 code) and $d (for data).
9383 It also allows a period initiated suffix to be added to the symbol, ie:
9384 "$[adtx]\.[:sym_char]+". */
9385
9386static bfd_boolean
9387is_aarch64_mapping_symbol (const char * name)
9388{
9389 return name != NULL /* Paranoia. */
9390 && name[0] == '$' /* Note: if objcopy --prefix-symbols has been used then
9391 the mapping symbols could have acquired a prefix.
9392 We do not support this here, since such symbols no
9393 longer conform to the ARM ELF ABI. */
9394 && (name[1] == 'd' || name[1] == 'x')
9395 && (name[2] == 0 || name[2] == '.');
9396 /* FIXME: Strictly speaking the symbol is only a valid mapping symbol if
9397 any characters that follow the period are legal characters for the body
9398 of a symbol's name. For now we just assume that this is the case. */
9399}
9400
9401/* Make sure that mapping symbols in object files are not removed via the
9402 "strip --strip-unneeded" tool. These symbols might needed in order to
9403 correctly generate linked files. Once an object file has been linked,
9404 it should be safe to remove them. */
9405
9406static void
9407elfNN_aarch64_backend_symbol_processing (bfd *abfd, asymbol *sym)
9408{
9409 if (((abfd->flags & (EXEC_P | DYNAMIC)) == 0)
9410 && sym->section != bfd_abs_section_ptr
9411 && is_aarch64_mapping_symbol (sym->name))
9412 sym->flags |= BSF_KEEP;
9413}
9414
a06ea964
NC
9415
9416/* We use this so we can override certain functions
9417 (though currently we don't). */
9418
cec5225b 9419const struct elf_size_info elfNN_aarch64_size_info =
a06ea964 9420{
cec5225b
YZ
9421 sizeof (ElfNN_External_Ehdr),
9422 sizeof (ElfNN_External_Phdr),
9423 sizeof (ElfNN_External_Shdr),
9424 sizeof (ElfNN_External_Rel),
9425 sizeof (ElfNN_External_Rela),
9426 sizeof (ElfNN_External_Sym),
9427 sizeof (ElfNN_External_Dyn),
a06ea964
NC
9428 sizeof (Elf_External_Note),
9429 4, /* Hash table entry size. */
9430 1, /* Internal relocs per external relocs. */
cec5225b
YZ
9431 ARCH_SIZE, /* Arch size. */
9432 LOG_FILE_ALIGN, /* Log_file_align. */
9433 ELFCLASSNN, EV_CURRENT,
9434 bfd_elfNN_write_out_phdrs,
9435 bfd_elfNN_write_shdrs_and_ehdr,
9436 bfd_elfNN_checksum_contents,
9437 bfd_elfNN_write_relocs,
9438 bfd_elfNN_swap_symbol_in,
9439 bfd_elfNN_swap_symbol_out,
9440 bfd_elfNN_slurp_reloc_table,
9441 bfd_elfNN_slurp_symbol_table,
9442 bfd_elfNN_swap_dyn_in,
9443 bfd_elfNN_swap_dyn_out,
9444 bfd_elfNN_swap_reloc_in,
9445 bfd_elfNN_swap_reloc_out,
9446 bfd_elfNN_swap_reloca_in,
9447 bfd_elfNN_swap_reloca_out
a06ea964
NC
9448};
9449
9450#define ELF_ARCH bfd_arch_aarch64
9451#define ELF_MACHINE_CODE EM_AARCH64
9452#define ELF_MAXPAGESIZE 0x10000
9453#define ELF_MINPAGESIZE 0x1000
9454#define ELF_COMMONPAGESIZE 0x1000
9455
07d6d2b8 9456#define bfd_elfNN_close_and_cleanup \
cec5225b 9457 elfNN_aarch64_close_and_cleanup
a06ea964 9458
07d6d2b8 9459#define bfd_elfNN_bfd_free_cached_info \
cec5225b 9460 elfNN_aarch64_bfd_free_cached_info
a06ea964 9461
cec5225b
YZ
9462#define bfd_elfNN_bfd_is_target_special_symbol \
9463 elfNN_aarch64_is_target_special_symbol
a06ea964 9464
07d6d2b8 9465#define bfd_elfNN_bfd_link_hash_table_create \
cec5225b 9466 elfNN_aarch64_link_hash_table_create
a06ea964 9467
cec5225b
YZ
9468#define bfd_elfNN_bfd_merge_private_bfd_data \
9469 elfNN_aarch64_merge_private_bfd_data
a06ea964 9470
cec5225b
YZ
9471#define bfd_elfNN_bfd_print_private_bfd_data \
9472 elfNN_aarch64_print_private_bfd_data
a06ea964 9473
cec5225b
YZ
9474#define bfd_elfNN_bfd_reloc_type_lookup \
9475 elfNN_aarch64_reloc_type_lookup
a06ea964 9476
cec5225b
YZ
9477#define bfd_elfNN_bfd_reloc_name_lookup \
9478 elfNN_aarch64_reloc_name_lookup
a06ea964 9479
cec5225b
YZ
9480#define bfd_elfNN_bfd_set_private_flags \
9481 elfNN_aarch64_set_private_flags
a06ea964 9482
cec5225b
YZ
9483#define bfd_elfNN_find_inliner_info \
9484 elfNN_aarch64_find_inliner_info
a06ea964 9485
cec5225b
YZ
9486#define bfd_elfNN_find_nearest_line \
9487 elfNN_aarch64_find_nearest_line
a06ea964 9488
cec5225b
YZ
9489#define bfd_elfNN_mkobject \
9490 elfNN_aarch64_mkobject
a06ea964 9491
cec5225b
YZ
9492#define bfd_elfNN_new_section_hook \
9493 elfNN_aarch64_new_section_hook
a06ea964
NC
9494
9495#define elf_backend_adjust_dynamic_symbol \
cec5225b 9496 elfNN_aarch64_adjust_dynamic_symbol
a06ea964
NC
9497
9498#define elf_backend_always_size_sections \
cec5225b 9499 elfNN_aarch64_always_size_sections
a06ea964
NC
9500
9501#define elf_backend_check_relocs \
cec5225b 9502 elfNN_aarch64_check_relocs
a06ea964
NC
9503
9504#define elf_backend_copy_indirect_symbol \
cec5225b 9505 elfNN_aarch64_copy_indirect_symbol
a06ea964
NC
9506
9507/* Create .dynbss, and .rela.bss sections in DYNOBJ, and set up shortcuts
9508 to them in our hash. */
9509#define elf_backend_create_dynamic_sections \
cec5225b 9510 elfNN_aarch64_create_dynamic_sections
a06ea964
NC
9511
9512#define elf_backend_init_index_section \
9513 _bfd_elf_init_2_index_sections
9514
a06ea964 9515#define elf_backend_finish_dynamic_sections \
cec5225b 9516 elfNN_aarch64_finish_dynamic_sections
a06ea964
NC
9517
9518#define elf_backend_finish_dynamic_symbol \
cec5225b 9519 elfNN_aarch64_finish_dynamic_symbol
a06ea964 9520
a06ea964 9521#define elf_backend_object_p \
cec5225b 9522 elfNN_aarch64_object_p
a06ea964 9523
07d6d2b8 9524#define elf_backend_output_arch_local_syms \
cec5225b 9525 elfNN_aarch64_output_arch_local_syms
a06ea964
NC
9526
9527#define elf_backend_plt_sym_val \
cec5225b 9528 elfNN_aarch64_plt_sym_val
a06ea964
NC
9529
9530#define elf_backend_post_process_headers \
cec5225b 9531 elfNN_aarch64_post_process_headers
a06ea964
NC
9532
9533#define elf_backend_relocate_section \
cec5225b 9534 elfNN_aarch64_relocate_section
a06ea964
NC
9535
9536#define elf_backend_reloc_type_class \
cec5225b 9537 elfNN_aarch64_reloc_type_class
a06ea964 9538
a06ea964 9539#define elf_backend_section_from_shdr \
cec5225b 9540 elfNN_aarch64_section_from_shdr
a06ea964
NC
9541
9542#define elf_backend_size_dynamic_sections \
cec5225b 9543 elfNN_aarch64_size_dynamic_sections
a06ea964
NC
9544
9545#define elf_backend_size_info \
cec5225b 9546 elfNN_aarch64_size_info
a06ea964 9547
68fcca92
JW
9548#define elf_backend_write_section \
9549 elfNN_aarch64_write_section
9550
d691934d
NC
9551#define elf_backend_symbol_processing \
9552 elfNN_aarch64_backend_symbol_processing
9553
a06ea964 9554#define elf_backend_can_refcount 1
59c108f7 9555#define elf_backend_can_gc_sections 1
a06ea964
NC
9556#define elf_backend_plt_readonly 1
9557#define elf_backend_want_got_plt 1
9558#define elf_backend_want_plt_sym 0
5474d94f 9559#define elf_backend_want_dynrelro 1
a06ea964
NC
9560#define elf_backend_may_use_rel_p 0
9561#define elf_backend_may_use_rela_p 1
9562#define elf_backend_default_use_rela_p 1
07d6d2b8 9563#define elf_backend_rela_normal 1
64f52338 9564#define elf_backend_dtrel_excludes_plt 1
a06ea964 9565#define elf_backend_got_header_size (GOT_ENTRY_SIZE * 3)
c495064d 9566#define elf_backend_default_execstack 0
32f573bc 9567#define elf_backend_extern_protected_data 1
7f784814 9568#define elf_backend_hash_symbol elf_aarch64_hash_symbol
a06ea964 9569
07d6d2b8 9570#undef elf_backend_obj_attrs_section
a06ea964
NC
9571#define elf_backend_obj_attrs_section ".ARM.attributes"
9572
cec5225b 9573#include "elfNN-target.h"
a75cf613
ES
9574
9575/* CloudABI support. */
9576
9577#undef TARGET_LITTLE_SYM
9578#define TARGET_LITTLE_SYM aarch64_elfNN_le_cloudabi_vec
9579#undef TARGET_LITTLE_NAME
9580#define TARGET_LITTLE_NAME "elfNN-littleaarch64-cloudabi"
9581#undef TARGET_BIG_SYM
9582#define TARGET_BIG_SYM aarch64_elfNN_be_cloudabi_vec
9583#undef TARGET_BIG_NAME
9584#define TARGET_BIG_NAME "elfNN-bigaarch64-cloudabi"
9585
9586#undef ELF_OSABI
9587#define ELF_OSABI ELFOSABI_CLOUDABI
9588
9589#undef elfNN_bed
9590#define elfNN_bed elfNN_aarch64_cloudabi_bed
9591
9592#include "elfNN-target.h"
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