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[GAS][ARM][2/3]Add SE_H shape to represent fp16 type.
[deliverable/binutils-gdb.git] / bfd / elfnn-aarch64.c
CommitLineData
cec5225b 1/* AArch64-specific support for NN-bit ELF.
6f2750fe 2 Copyright (C) 2009-2016 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
34 R_AARCH64_TLSGD_ADR_PAGE21(foo)
35 add x0, :tlsgd_lo12:foo
36 R_AARCH64_TLSGD_ADD_LO12_NC(foo)
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
418009c2 43 adrp x0, :tlsdesc:foo R_AARCH64_TLSDESC_ADR_PAGE21(foo)
a06ea964
NC		 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)
46 .tlsdesccall foo
47 blr x1 R_AARCH64_TLSDESC_CALL(foo)
48
49 The relocations R_AARCH64_TLSGD_{ADR_PREL21,ADD_LO12_NC} against foo
50 indicate that foo is thread local and should be accessed via the
51 traditional TLS mechanims.
52
a6bb11b2 53 The relocations R_AARCH64_TLSDESC_{ADR_PAGE21,LD64_LO12_NC,ADD_LO12_NC}
a06ea964
NC		 54 against foo indicate that 'foo' is thread local and should be accessed
55 via a TLS descriptor mechanism.
56
57 The precise instruction sequence is only relevant from the
58 perspective of linker relaxation which is currently not implemented.
59
60 The static linker must detect that 'foo' is a TLS object and
61 allocate a double GOT entry. The GOT entry must be created for both
62 global and local TLS symbols. Note that this is different to none
63 TLS local objects which do not need a GOT entry.
64
65 In the traditional TLS mechanism, the double GOT entry is used to
66 provide the tls_index structure, containing module and offset
a6bb11b2 67 entries. The static linker places the relocation R_AARCH64_TLS_DTPMOD
a06ea964
NC		 68 on the module entry. The loader will subsequently fixup this
69 relocation with the module identity.
70
71 For global traditional TLS symbols the static linker places an
a6bb11b2 72 R_AARCH64_TLS_DTPREL relocation on the offset entry. The loader
a06ea964
NC		 73 will subsequently fixup the offset. For local TLS symbols the static
74 linker fixes up offset.
75
76 In the TLS descriptor mechanism the double GOT entry is used to
77 provide the descriptor. The static linker places the relocation
78 R_AARCH64_TLSDESC on the first GOT slot. The loader will
79 subsequently fix this up.
80
81 Implementation:
82
83 The handling of TLS symbols is implemented across a number of
84 different backend functions. The following is a top level view of
85 what processing is performed where.
86
87 The TLS implementation maintains state information for each TLS
88 symbol. The state information for local and global symbols is kept
89 in different places. Global symbols use generic BFD structures while
90 local symbols use backend specific structures that are allocated and
91 maintained entirely by the backend.
92
93 The flow:
94
cec5225b 95 elfNN_aarch64_check_relocs()
a06ea964
NC		 96
97 This function is invoked for each relocation.
98
99 The TLS relocations R_AARCH64_TLSGD_{ADR_PREL21,ADD_LO12_NC} and
a6bb11b2 100 R_AARCH64_TLSDESC_{ADR_PAGE21,LD64_LO12_NC,ADD_LO12_NC} are
a06ea964
NC		 101 spotted. One time creation of local symbol data structures are
102 created when the first local symbol is seen.
103
104 The reference count for a symbol is incremented. The GOT type for
105 each symbol is marked as general dynamic.
106
cec5225b 107 elfNN_aarch64_allocate_dynrelocs ()
a06ea964
NC		 108
109 For each global with positive reference count we allocate a double
110 GOT slot. For a traditional TLS symbol we allocate space for two
111 relocation entries on the GOT, for a TLS descriptor symbol we
112 allocate space for one relocation on the slot. Record the GOT offset
113 for this symbol.
114
cec5225b 115 elfNN_aarch64_size_dynamic_sections ()
a06ea964
NC		 116
117 Iterate all input BFDS, look for in the local symbol data structure
118 constructed earlier for local TLS symbols and allocate them double
119 GOT slots along with space for a single GOT relocation. Update the
120 local symbol structure to record the GOT offset allocated.
121
cec5225b 122 elfNN_aarch64_relocate_section ()
a06ea964 123
cec5225b 124 Calls elfNN_aarch64_final_link_relocate ()
a06ea964
NC		 125
126 Emit the relevant TLS relocations against the GOT for each TLS
127 symbol. For local TLS symbols emit the GOT offset directly. The GOT
128 relocations are emitted once the first time a TLS symbol is
129 encountered. The implementation uses the LSB of the GOT offset to
130 flag that the relevant GOT relocations for a symbol have been
131 emitted. All of the TLS code that uses the GOT offset needs to take
132 care to mask out this flag bit before using the offset.
133
cec5225b 134 elfNN_aarch64_final_link_relocate ()
a06ea964
NC		 135
136 Fixup the R_AARCH64_TLSGD_{ADR_PREL21, ADD_LO12_NC} relocations. */
137
138#include "sysdep.h"
139#include "bfd.h"
140#include "libiberty.h"
141#include "libbfd.h"
142#include "bfd_stdint.h"
143#include "elf-bfd.h"
144#include "bfdlink.h"
1419bbe5 145#include "objalloc.h"
a06ea964 146#include "elf/aarch64.h"
caed7120 147#include "elfxx-aarch64.h"
a06ea964 148
cec5225b
YZ		 149#define ARCH_SIZE NN
150
151#if ARCH_SIZE == 64
152#define AARCH64_R(NAME) R_AARCH64_ ## NAME
153#define AARCH64_R_STR(NAME) "R_AARCH64_" #NAME
a6bb11b2
YZ		 154#define HOWTO64(...) HOWTO (__VA_ARGS__)
155#define HOWTO32(...) EMPTY_HOWTO (0)
cec5225b
YZ		 156#define LOG_FILE_ALIGN 3
157#endif
158
159#if ARCH_SIZE == 32
160#define AARCH64_R(NAME) R_AARCH64_P32_ ## NAME
161#define AARCH64_R_STR(NAME) "R_AARCH64_P32_" #NAME
a6bb11b2
YZ		 162#define HOWTO64(...) EMPTY_HOWTO (0)
163#define HOWTO32(...) HOWTO (__VA_ARGS__)
cec5225b
YZ		 164#define LOG_FILE_ALIGN 2
165#endif
166
a6bb11b2 167#define IS_AARCH64_TLS_RELOC(R_TYPE) \
4c0a9a6f
JW		 168 ((R_TYPE) == BFD_RELOC_AARCH64_TLSGD_ADD_LO12_NC \
169 || (R_TYPE) == BFD_RELOC_AARCH64_TLSGD_ADR_PAGE21 \
3c12b054 170 || (R_TYPE) == BFD_RELOC_AARCH64_TLSGD_ADR_PREL21 \
3e8286c0 171 || (R_TYPE) == BFD_RELOC_AARCH64_TLSGD_MOVW_G0_NC \
1aa66fb1 172 || (R_TYPE) == BFD_RELOC_AARCH64_TLSGD_MOVW_G1 \
a6bb11b2 173 || (R_TYPE) == BFD_RELOC_AARCH64_TLSIE_ADR_GOTTPREL_PAGE21 \
a6bb11b2 174 || (R_TYPE) == BFD_RELOC_AARCH64_TLSIE_LD32_GOTTPREL_LO12_NC \
4c0a9a6f 175 || (R_TYPE) == BFD_RELOC_AARCH64_TLSIE_LD64_GOTTPREL_LO12_NC \
a6bb11b2 176 || (R_TYPE) == BFD_RELOC_AARCH64_TLSIE_LD_GOTTPREL_PREL19 \
4c0a9a6f
JW		 177 || (R_TYPE) == BFD_RELOC_AARCH64_TLSIE_MOVW_GOTTPREL_G0_NC \
178 || (R_TYPE) == BFD_RELOC_AARCH64_TLSIE_MOVW_GOTTPREL_G1 \
6ffe9a1b 179 || (R_TYPE) == BFD_RELOC_AARCH64_TLSLD_ADD_DTPREL_HI12 \
40fbed84 180 || (R_TYPE) == BFD_RELOC_AARCH64_TLSLD_ADD_DTPREL_LO12 \
753999c1 181 || (R_TYPE) == BFD_RELOC_AARCH64_TLSLD_ADD_DTPREL_LO12_NC \
73f925cc 182 || (R_TYPE) == BFD_RELOC_AARCH64_TLSLD_ADD_LO12_NC \
f69e4920 183 || (R_TYPE) == BFD_RELOC_AARCH64_TLSLD_ADR_PAGE21 \
77a69ff8 184 || (R_TYPE) == BFD_RELOC_AARCH64_TLSLD_ADR_PREL21 \
07c9aa07
JW		 185 || (R_TYPE) == BFD_RELOC_AARCH64_TLSLD_LDST16_DTPREL_LO12 \
186 || (R_TYPE) == BFD_RELOC_AARCH64_TLSLD_LDST16_DTPREL_LO12_NC \
187 || (R_TYPE) == BFD_RELOC_AARCH64_TLSLD_LDST32_DTPREL_LO12 \
188 || (R_TYPE) == BFD_RELOC_AARCH64_TLSLD_LDST32_DTPREL_LO12_NC \
189 || (R_TYPE) == BFD_RELOC_AARCH64_TLSLD_LDST64_DTPREL_LO12 \
190 || (R_TYPE) == BFD_RELOC_AARCH64_TLSLD_LDST64_DTPREL_LO12_NC \
191 || (R_TYPE) == BFD_RELOC_AARCH64_TLSLD_LDST8_DTPREL_LO12 \
192 || (R_TYPE) == BFD_RELOC_AARCH64_TLSLD_LDST8_DTPREL_LO12_NC \
6ffe9a1b
JW		 193 || (R_TYPE) == BFD_RELOC_AARCH64_TLSLD_MOVW_DTPREL_G0 \
194 || (R_TYPE) == BFD_RELOC_AARCH64_TLSLD_MOVW_DTPREL_G0_NC \
195 || (R_TYPE) == BFD_RELOC_AARCH64_TLSLD_MOVW_DTPREL_G1 \
196 || (R_TYPE) == BFD_RELOC_AARCH64_TLSLD_MOVW_DTPREL_G1_NC \
197 || (R_TYPE) == BFD_RELOC_AARCH64_TLSLD_MOVW_DTPREL_G2 \
a6bb11b2 198 || (R_TYPE) == BFD_RELOC_AARCH64_TLSLE_ADD_TPREL_HI12 \
4c0a9a6f 199 || (R_TYPE) == BFD_RELOC_AARCH64_TLSLE_ADD_TPREL_LO12 \
a6bb11b2 200 || (R_TYPE) == BFD_RELOC_AARCH64_TLSLE_ADD_TPREL_LO12_NC \
a6bb11b2
YZ		 201 || (R_TYPE) == BFD_RELOC_AARCH64_TLSLE_MOVW_TPREL_G0 \
202 || (R_TYPE) == BFD_RELOC_AARCH64_TLSLE_MOVW_TPREL_G0_NC \
4c0a9a6f
JW		 203 || (R_TYPE) == BFD_RELOC_AARCH64_TLSLE_MOVW_TPREL_G1 \
204 || (R_TYPE) == BFD_RELOC_AARCH64_TLSLE_MOVW_TPREL_G1_NC \
205 || (R_TYPE) == BFD_RELOC_AARCH64_TLSLE_MOVW_TPREL_G2 \
a6bb11b2
YZ		 206 || (R_TYPE) == BFD_RELOC_AARCH64_TLS_DTPMOD \
207 || (R_TYPE) == BFD_RELOC_AARCH64_TLS_DTPREL \
208 || (R_TYPE) == BFD_RELOC_AARCH64_TLS_TPREL \
a06ea964
NC		 209 || IS_AARCH64_TLSDESC_RELOC ((R_TYPE)))
210
9331eea1 211#define IS_AARCH64_TLS_RELAX_RELOC(R_TYPE) \
0484b454
RL		 212 ((R_TYPE) == BFD_RELOC_AARCH64_TLSDESC_ADD \
213 || (R_TYPE) == BFD_RELOC_AARCH64_TLSDESC_ADD_LO12_NC \
4af68b9c
JW		 214 || (R_TYPE) == BFD_RELOC_AARCH64_TLSDESC_ADR_PAGE21 \
215 || (R_TYPE) == BFD_RELOC_AARCH64_TLSDESC_ADR_PREL21 \
216 || (R_TYPE) == BFD_RELOC_AARCH64_TLSDESC_CALL \
217 || (R_TYPE) == BFD_RELOC_AARCH64_TLSDESC_LD_PREL19 \
218 || (R_TYPE) == BFD_RELOC_AARCH64_TLSDESC_LDNN_LO12_NC \
0484b454
RL		 219 || (R_TYPE) == BFD_RELOC_AARCH64_TLSDESC_LDR \
220 || (R_TYPE) == BFD_RELOC_AARCH64_TLSDESC_OFF_G0_NC \
221 || (R_TYPE) == BFD_RELOC_AARCH64_TLSDESC_OFF_G1 \
222 || (R_TYPE) == BFD_RELOC_AARCH64_TLSDESC_LDR \
4af68b9c 223 || (R_TYPE) == BFD_RELOC_AARCH64_TLSGD_ADR_PAGE21 \
9331eea1
JW		 224 || (R_TYPE) == BFD_RELOC_AARCH64_TLSGD_ADR_PREL21 \
225 || (R_TYPE) == BFD_RELOC_AARCH64_TLSGD_ADD_LO12_NC \
ac734732
RL		 226 || (R_TYPE) == BFD_RELOC_AARCH64_TLSGD_MOVW_G0_NC \
227 || (R_TYPE) == BFD_RELOC_AARCH64_TLSGD_MOVW_G1 \
9331eea1
JW		 228 || (R_TYPE) == BFD_RELOC_AARCH64_TLSIE_ADR_GOTTPREL_PAGE21 \
229 || (R_TYPE) == BFD_RELOC_AARCH64_TLSIE_LD_GOTTPREL_PREL19 \
230 || (R_TYPE) == BFD_RELOC_AARCH64_TLSIE_LDNN_GOTTPREL_LO12_NC \
259364ad
JW		 231 || (R_TYPE) == BFD_RELOC_AARCH64_TLSLD_ADD_LO12_NC \
232 || (R_TYPE) == BFD_RELOC_AARCH64_TLSLD_ADR_PAGE21 \
4af68b9c 233 || (R_TYPE) == BFD_RELOC_AARCH64_TLSLD_ADR_PREL21)
9331eea1 234
a6bb11b2 235#define IS_AARCH64_TLSDESC_RELOC(R_TYPE) \
4c0a9a6f
JW		 236 ((R_TYPE) == BFD_RELOC_AARCH64_TLSDESC \
237 || (R_TYPE) == BFD_RELOC_AARCH64_TLSDESC_ADD \
238 || (R_TYPE) == BFD_RELOC_AARCH64_TLSDESC_ADD_LO12_NC \
a6bb11b2 239 || (R_TYPE) == BFD_RELOC_AARCH64_TLSDESC_ADR_PAGE21 \
389b8029 240 || (R_TYPE) == BFD_RELOC_AARCH64_TLSDESC_ADR_PREL21 \
4c0a9a6f 241 || (R_TYPE) == BFD_RELOC_AARCH64_TLSDESC_CALL \
a6bb11b2 242 || (R_TYPE) == BFD_RELOC_AARCH64_TLSDESC_LD32_LO12_NC \
4c0a9a6f 243 || (R_TYPE) == BFD_RELOC_AARCH64_TLSDESC_LD64_LO12_NC \
a6bb11b2 244 || (R_TYPE) == BFD_RELOC_AARCH64_TLSDESC_LDR \
4c0a9a6f
JW		 245 || (R_TYPE) == BFD_RELOC_AARCH64_TLSDESC_LD_PREL19 \
246 || (R_TYPE) == BFD_RELOC_AARCH64_TLSDESC_OFF_G0_NC \
247 || (R_TYPE) == BFD_RELOC_AARCH64_TLSDESC_OFF_G1)
a06ea964
NC		 248
249#define ELIMINATE_COPY_RELOCS 0
250
a06ea964 251/* Return size of a relocation entry. HTAB is the bfd's
cec5225b
YZ		 252 elf_aarch64_link_hash_entry. */
253#define RELOC_SIZE(HTAB) (sizeof (ElfNN_External_Rela))
a06ea964 254
cec5225b
YZ		 255/* GOT Entry size - 8 bytes in ELF64 and 4 bytes in ELF32. */
256#define GOT_ENTRY_SIZE (ARCH_SIZE / 8)
a06ea964
NC		 257#define PLT_ENTRY_SIZE (32)
258#define PLT_SMALL_ENTRY_SIZE (16)
259#define PLT_TLSDESC_ENTRY_SIZE (32)
260
a06ea964
NC		 261/* Encoding of the nop instruction */
262#define INSN_NOP 0xd503201f
263
264#define aarch64_compute_jump_table_size(htab) \
265 (((htab)->root.srelplt == NULL) ? 0 \
266 : (htab)->root.srelplt->reloc_count * GOT_ENTRY_SIZE)
267
268/* The first entry in a procedure linkage table looks like this
269 if the distance between the PLTGOT and the PLT is < 4GB use
270 these PLT entries. Note that the dynamic linker gets &PLTGOT[2]
271 in x16 and needs to work out PLTGOT[1] by using an address of
cec5225b
YZ		 272 [x16,#-GOT_ENTRY_SIZE]. */
273static const bfd_byte elfNN_aarch64_small_plt0_entry[PLT_ENTRY_SIZE] =
a06ea964
NC		 274{
275 0xf0, 0x7b, 0xbf, 0xa9, /* stp x16, x30, [sp, #-16]! */
276 0x10, 0x00, 0x00, 0x90, /* adrp x16, (GOT+16) */
caed7120 277#if ARCH_SIZE == 64
a06ea964
NC		 278 0x11, 0x0A, 0x40, 0xf9, /* ldr x17, [x16, #PLT_GOT+0x10] */
279 0x10, 0x42, 0x00, 0x91, /* add x16, x16,#PLT_GOT+0x10 */
caed7120
YZ		 280#else
281 0x11, 0x0A, 0x40, 0xb9, /* ldr w17, [x16, #PLT_GOT+0x8] */
282 0x10, 0x22, 0x00, 0x11, /* add w16, w16,#PLT_GOT+0x8 */
283#endif
a06ea964
NC		 284 0x20, 0x02, 0x1f, 0xd6, /* br x17 */
285 0x1f, 0x20, 0x03, 0xd5, /* nop */
286 0x1f, 0x20, 0x03, 0xd5, /* nop */
287 0x1f, 0x20, 0x03, 0xd5, /* nop */
288};
289
290/* Per function entry in a procedure linkage table looks like this
291 if the distance between the PLTGOT and the PLT is < 4GB use
292 these PLT entries. */
cec5225b 293static const bfd_byte elfNN_aarch64_small_plt_entry[PLT_SMALL_ENTRY_SIZE] =
a06ea964
NC		 294{
295 0x10, 0x00, 0x00, 0x90, /* adrp x16, PLTGOT + n * 8 */
caed7120 296#if ARCH_SIZE == 64
a06ea964
NC		 297 0x11, 0x02, 0x40, 0xf9, /* ldr x17, [x16, PLTGOT + n * 8] */
298 0x10, 0x02, 0x00, 0x91, /* add x16, x16, :lo12:PLTGOT + n * 8 */
caed7120
YZ		 299#else
300 0x11, 0x02, 0x40, 0xb9, /* ldr w17, [x16, PLTGOT + n * 4] */
301 0x10, 0x02, 0x00, 0x11, /* add w16, w16, :lo12:PLTGOT + n * 4 */
302#endif
a06ea964
NC		 303 0x20, 0x02, 0x1f, 0xd6, /* br x17. */
304};
305
306static const bfd_byte
cec5225b 307elfNN_aarch64_tlsdesc_small_plt_entry[PLT_TLSDESC_ENTRY_SIZE] =
a06ea964
NC		 308{
309 0xe2, 0x0f, 0xbf, 0xa9, /* stp x2, x3, [sp, #-16]! */
310 0x02, 0x00, 0x00, 0x90, /* adrp x2, 0 */
311 0x03, 0x00, 0x00, 0x90, /* adrp x3, 0 */
caed7120
YZ		 312#if ARCH_SIZE == 64
313 0x42, 0x00, 0x40, 0xf9, /* ldr x2, [x2, #0] */
a06ea964 314 0x63, 0x00, 0x00, 0x91, /* add x3, x3, 0 */
caed7120
YZ		 315#else
316 0x42, 0x00, 0x40, 0xb9, /* ldr w2, [x2, #0] */
317 0x63, 0x00, 0x00, 0x11, /* add w3, w3, 0 */
318#endif
319 0x40, 0x00, 0x1f, 0xd6, /* br x2 */
a06ea964
NC		 320 0x1f, 0x20, 0x03, 0xd5, /* nop */
321 0x1f, 0x20, 0x03, 0xd5, /* nop */
322};
323
cec5225b
YZ		 324#define elf_info_to_howto elfNN_aarch64_info_to_howto
325#define elf_info_to_howto_rel elfNN_aarch64_info_to_howto
a06ea964
NC		 326
327#define AARCH64_ELF_ABI_VERSION 0
a06ea964
NC		 328
329/* In case we're on a 32-bit machine, construct a 64-bit "-1" value. */
330#define ALL_ONES (~ (bfd_vma) 0)
331
a6bb11b2
YZ		 332/* Indexed by the bfd interal reloc enumerators.
333 Therefore, the table needs to be synced with BFD_RELOC_AARCH64_*
334 in reloc.c. */
a06ea964 335
a6bb11b2 336static reloc_howto_type elfNN_aarch64_howto_table[] =
a06ea964 337{
a6bb11b2 338 EMPTY_HOWTO (0),
a06ea964 339
a6bb11b2 340 /* Basic data relocations. */
a06ea964 341
a6bb11b2
YZ		 342#if ARCH_SIZE == 64
343 HOWTO (R_AARCH64_NULL, /* type */
a06ea964 344 0, /* rightshift */
6346d5ca 345 3, /* size (0 = byte, 1 = short, 2 = long) */
a6bb11b2 346 0, /* bitsize */
a06ea964
NC		 347 FALSE, /* pc_relative */
348 0, /* bitpos */
349 complain_overflow_dont, /* complain_on_overflow */
350 bfd_elf_generic_reloc, /* special_function */
a6bb11b2 351 "R_AARCH64_NULL", /* name */
a06ea964
NC		 352 FALSE, /* partial_inplace */
353 0, /* src_mask */
a6bb11b2 354 0, /* dst_mask */
a06ea964 355 FALSE), /* pcrel_offset */
a6bb11b2
YZ		 356#else
357 HOWTO (R_AARCH64_NONE, /* type */
a06ea964 358 0, /* rightshift */
6346d5ca 359 3, /* size (0 = byte, 1 = short, 2 = long) */
a06ea964
NC		 360 0, /* bitsize */
361 FALSE, /* pc_relative */
362 0, /* bitpos */
363 complain_overflow_dont, /* complain_on_overflow */
364 bfd_elf_generic_reloc, /* special_function */
a6bb11b2 365 "R_AARCH64_NONE", /* name */
a06ea964
NC		 366 FALSE, /* partial_inplace */
367 0, /* src_mask */
368 0, /* dst_mask */
369 FALSE), /* pcrel_offset */
a6bb11b2 370#endif
a06ea964
NC		 371
372 /* .xword: (S+A) */
a6bb11b2 373 HOWTO64 (AARCH64_R (ABS64), /* type */
a06ea964
NC		 374 0, /* rightshift */
375 4, /* size (4 = long long) */
376 64, /* bitsize */
377 FALSE, /* pc_relative */
378 0, /* bitpos */
379 complain_overflow_unsigned, /* complain_on_overflow */
380 bfd_elf_generic_reloc, /* special_function */
a6bb11b2 381 AARCH64_R_STR (ABS64), /* name */
a06ea964
NC		 382 FALSE, /* partial_inplace */
383 ALL_ONES, /* src_mask */
384 ALL_ONES, /* dst_mask */
385 FALSE), /* pcrel_offset */
386
387 /* .word: (S+A) */
a6bb11b2 388 HOWTO (AARCH64_R (ABS32), /* type */
a06ea964
NC		 389 0, /* rightshift */
390 2, /* size (0 = byte, 1 = short, 2 = long) */
391 32, /* bitsize */
392 FALSE, /* pc_relative */
393 0, /* bitpos */
394 complain_overflow_unsigned, /* complain_on_overflow */
395 bfd_elf_generic_reloc, /* special_function */
a6bb11b2 396 AARCH64_R_STR (ABS32), /* name */
a06ea964
NC		 397 FALSE, /* partial_inplace */
398 0xffffffff, /* src_mask */
399 0xffffffff, /* dst_mask */
400 FALSE), /* pcrel_offset */
401
402 /* .half: (S+A) */
a6bb11b2 403 HOWTO (AARCH64_R (ABS16), /* type */
a06ea964
NC		 404 0, /* rightshift */
405 1, /* size (0 = byte, 1 = short, 2 = long) */
406 16, /* bitsize */
407 FALSE, /* pc_relative */
408 0, /* bitpos */
409 complain_overflow_unsigned, /* complain_on_overflow */
410 bfd_elf_generic_reloc, /* special_function */
a6bb11b2 411 AARCH64_R_STR (ABS16), /* name */
a06ea964
NC		 412 FALSE, /* partial_inplace */
413 0xffff, /* src_mask */
414 0xffff, /* dst_mask */
415 FALSE), /* pcrel_offset */
416
417 /* .xword: (S+A-P) */
a6bb11b2 418 HOWTO64 (AARCH64_R (PREL64), /* type */
a06ea964
NC		 419 0, /* rightshift */
420 4, /* size (4 = long long) */
421 64, /* bitsize */
422 TRUE, /* pc_relative */
423 0, /* bitpos */
424 complain_overflow_signed, /* complain_on_overflow */
425 bfd_elf_generic_reloc, /* special_function */
a6bb11b2 426 AARCH64_R_STR (PREL64), /* name */
a06ea964
NC		 427 FALSE, /* partial_inplace */
428 ALL_ONES, /* src_mask */
429 ALL_ONES, /* dst_mask */
430 TRUE), /* pcrel_offset */
431
432 /* .word: (S+A-P) */
a6bb11b2 433 HOWTO (AARCH64_R (PREL32), /* type */
a06ea964
NC		 434 0, /* rightshift */
435 2, /* size (0 = byte, 1 = short, 2 = long) */
436 32, /* bitsize */
437 TRUE, /* pc_relative */
438 0, /* bitpos */
439 complain_overflow_signed, /* complain_on_overflow */
440 bfd_elf_generic_reloc, /* special_function */
a6bb11b2 441 AARCH64_R_STR (PREL32), /* name */
a06ea964
NC		 442 FALSE, /* partial_inplace */
443 0xffffffff, /* src_mask */
444 0xffffffff, /* dst_mask */
445 TRUE), /* pcrel_offset */
446
447 /* .half: (S+A-P) */
a6bb11b2 448 HOWTO (AARCH64_R (PREL16), /* type */
a06ea964
NC		 449 0, /* rightshift */
450 1, /* size (0 = byte, 1 = short, 2 = long) */
451 16, /* bitsize */
452 TRUE, /* pc_relative */
453 0, /* bitpos */
454 complain_overflow_signed, /* complain_on_overflow */
455 bfd_elf_generic_reloc, /* special_function */
a6bb11b2 456 AARCH64_R_STR (PREL16), /* name */
a06ea964
NC		 457 FALSE, /* partial_inplace */
458 0xffff, /* src_mask */
459 0xffff, /* dst_mask */
460 TRUE), /* pcrel_offset */
461
462 /* Group relocations to create a 16, 32, 48 or 64 bit
463 unsigned data or abs address inline. */
464
465 /* MOVZ: ((S+A) >> 0) & 0xffff */
a6bb11b2 466 HOWTO (AARCH64_R (MOVW_UABS_G0), /* type */
a06ea964
NC		 467 0, /* rightshift */
468 2, /* size (0 = byte, 1 = short, 2 = long) */
469 16, /* bitsize */
470 FALSE, /* pc_relative */
471 0, /* bitpos */
472 complain_overflow_unsigned, /* complain_on_overflow */
473 bfd_elf_generic_reloc, /* special_function */
a6bb11b2 474 AARCH64_R_STR (MOVW_UABS_G0), /* name */
a06ea964
NC		 475 FALSE, /* partial_inplace */
476 0xffff, /* src_mask */
477 0xffff, /* dst_mask */
478 FALSE), /* pcrel_offset */
479
480 /* MOVK: ((S+A) >> 0) & 0xffff [no overflow check] */
a6bb11b2 481 HOWTO (AARCH64_R (MOVW_UABS_G0_NC), /* type */
a06ea964
NC		 482 0, /* rightshift */
483 2, /* size (0 = byte, 1 = short, 2 = long) */
484 16, /* bitsize */
485 FALSE, /* pc_relative */
486 0, /* bitpos */
487 complain_overflow_dont, /* complain_on_overflow */
488 bfd_elf_generic_reloc, /* special_function */
a6bb11b2 489 AARCH64_R_STR (MOVW_UABS_G0_NC), /* name */
a06ea964
NC		 490 FALSE, /* partial_inplace */
491 0xffff, /* src_mask */
492 0xffff, /* dst_mask */
493 FALSE), /* pcrel_offset */
494
495 /* MOVZ: ((S+A) >> 16) & 0xffff */
a6bb11b2 496 HOWTO (AARCH64_R (MOVW_UABS_G1), /* type */
a06ea964
NC		 497 16, /* rightshift */
498 2, /* size (0 = byte, 1 = short, 2 = long) */
499 16, /* bitsize */
500 FALSE, /* pc_relative */
501 0, /* bitpos */
502 complain_overflow_unsigned, /* complain_on_overflow */
503 bfd_elf_generic_reloc, /* special_function */
a6bb11b2 504 AARCH64_R_STR (MOVW_UABS_G1), /* name */
a06ea964
NC		 505 FALSE, /* partial_inplace */
506 0xffff, /* src_mask */
507 0xffff, /* dst_mask */
508 FALSE), /* pcrel_offset */
509
510 /* MOVK: ((S+A) >> 16) & 0xffff [no overflow check] */
a6bb11b2 511 HOWTO64 (AARCH64_R (MOVW_UABS_G1_NC), /* type */
a06ea964
NC		 512 16, /* rightshift */
513 2, /* size (0 = byte, 1 = short, 2 = long) */
514 16, /* bitsize */
515 FALSE, /* pc_relative */
516 0, /* bitpos */
517 complain_overflow_dont, /* complain_on_overflow */
518 bfd_elf_generic_reloc, /* special_function */
a6bb11b2 519 AARCH64_R_STR (MOVW_UABS_G1_NC), /* name */
a06ea964
NC		 520 FALSE, /* partial_inplace */
521 0xffff, /* src_mask */
522 0xffff, /* dst_mask */
523 FALSE), /* pcrel_offset */
524
525 /* MOVZ: ((S+A) >> 32) & 0xffff */
a6bb11b2 526 HOWTO64 (AARCH64_R (MOVW_UABS_G2), /* type */
a06ea964
NC		 527 32, /* rightshift */
528 2, /* size (0 = byte, 1 = short, 2 = long) */
529 16, /* bitsize */
530 FALSE, /* pc_relative */
531 0, /* bitpos */
532 complain_overflow_unsigned, /* complain_on_overflow */
533 bfd_elf_generic_reloc, /* special_function */
a6bb11b2 534 AARCH64_R_STR (MOVW_UABS_G2), /* name */
a06ea964
NC		 535 FALSE, /* partial_inplace */
536 0xffff, /* src_mask */
537 0xffff, /* dst_mask */
538 FALSE), /* pcrel_offset */
539
540 /* MOVK: ((S+A) >> 32) & 0xffff [no overflow check] */
a6bb11b2 541 HOWTO64 (AARCH64_R (MOVW_UABS_G2_NC), /* type */
a06ea964
NC		 542 32, /* rightshift */
543 2, /* size (0 = byte, 1 = short, 2 = long) */
544 16, /* bitsize */
545 FALSE, /* pc_relative */
546 0, /* bitpos */
547 complain_overflow_dont, /* complain_on_overflow */
548 bfd_elf_generic_reloc, /* special_function */
a6bb11b2 549 AARCH64_R_STR (MOVW_UABS_G2_NC), /* name */
a06ea964
NC		 550 FALSE, /* partial_inplace */
551 0xffff, /* src_mask */
552 0xffff, /* dst_mask */
553 FALSE), /* pcrel_offset */
554
555 /* MOVZ: ((S+A) >> 48) & 0xffff */
a6bb11b2 556 HOWTO64 (AARCH64_R (MOVW_UABS_G3), /* type */
a06ea964
NC		 557 48, /* rightshift */
558 2, /* size (0 = byte, 1 = short, 2 = long) */
559 16, /* bitsize */
560 FALSE, /* pc_relative */
561 0, /* bitpos */
562 complain_overflow_unsigned, /* complain_on_overflow */
563 bfd_elf_generic_reloc, /* special_function */
a6bb11b2 564 AARCH64_R_STR (MOVW_UABS_G3), /* name */
a06ea964
NC		 565 FALSE, /* partial_inplace */
566 0xffff, /* src_mask */
567 0xffff, /* dst_mask */
568 FALSE), /* pcrel_offset */
569
570 /* Group relocations to create high part of a 16, 32, 48 or 64 bit
571 signed data or abs address inline. Will change instruction
572 to MOVN or MOVZ depending on sign of calculated value. */
573
574 /* MOV[ZN]: ((S+A) >> 0) & 0xffff */
a6bb11b2 575 HOWTO (AARCH64_R (MOVW_SABS_G0), /* type */
a06ea964
NC		 576 0, /* rightshift */
577 2, /* size (0 = byte, 1 = short, 2 = long) */
578 16, /* bitsize */
579 FALSE, /* pc_relative */
580 0, /* bitpos */
581 complain_overflow_signed, /* complain_on_overflow */
582 bfd_elf_generic_reloc, /* special_function */
a6bb11b2 583 AARCH64_R_STR (MOVW_SABS_G0), /* name */
a06ea964
NC		 584 FALSE, /* partial_inplace */
585 0xffff, /* src_mask */
586 0xffff, /* dst_mask */
587 FALSE), /* pcrel_offset */
588
589 /* MOV[ZN]: ((S+A) >> 16) & 0xffff */
a6bb11b2 590 HOWTO64 (AARCH64_R (MOVW_SABS_G1), /* type */
a06ea964
NC		 591 16, /* rightshift */
592 2, /* size (0 = byte, 1 = short, 2 = long) */
593 16, /* bitsize */
594 FALSE, /* pc_relative */
595 0, /* bitpos */
596 complain_overflow_signed, /* complain_on_overflow */
597 bfd_elf_generic_reloc, /* special_function */
a6bb11b2 598 AARCH64_R_STR (MOVW_SABS_G1), /* name */
a06ea964
NC		 599 FALSE, /* partial_inplace */
600 0xffff, /* src_mask */
601 0xffff, /* dst_mask */
602 FALSE), /* pcrel_offset */
603
604 /* MOV[ZN]: ((S+A) >> 32) & 0xffff */
a6bb11b2 605 HOWTO64 (AARCH64_R (MOVW_SABS_G2), /* type */
a06ea964
NC		 606 32, /* rightshift */
607 2, /* size (0 = byte, 1 = short, 2 = long) */
608 16, /* bitsize */
609 FALSE, /* pc_relative */
610 0, /* bitpos */
611 complain_overflow_signed, /* complain_on_overflow */
612 bfd_elf_generic_reloc, /* special_function */
a6bb11b2 613 AARCH64_R_STR (MOVW_SABS_G2), /* name */
a06ea964
NC		 614 FALSE, /* partial_inplace */
615 0xffff, /* src_mask */
616 0xffff, /* dst_mask */
617 FALSE), /* pcrel_offset */
618
619/* Relocations to generate 19, 21 and 33 bit PC-relative load/store
620 addresses: PG(x) is (x & ~0xfff). */
621
622 /* LD-lit: ((S+A-P) >> 2) & 0x7ffff */
a6bb11b2 623 HOWTO (AARCH64_R (LD_PREL_LO19), /* type */
a06ea964
NC		 624 2, /* rightshift */
625 2, /* size (0 = byte, 1 = short, 2 = long) */
626 19, /* bitsize */
627 TRUE, /* pc_relative */
628 0, /* bitpos */
629 complain_overflow_signed, /* complain_on_overflow */
630 bfd_elf_generic_reloc, /* special_function */
a6bb11b2 631 AARCH64_R_STR (LD_PREL_LO19), /* name */
a06ea964
NC		 632 FALSE, /* partial_inplace */
633 0x7ffff, /* src_mask */
634 0x7ffff, /* dst_mask */
635 TRUE), /* pcrel_offset */
636
637 /* ADR: (S+A-P) & 0x1fffff */
a6bb11b2 638 HOWTO (AARCH64_R (ADR_PREL_LO21), /* type */
a06ea964
NC		 639 0, /* rightshift */
640 2, /* size (0 = byte, 1 = short, 2 = long) */
641 21, /* bitsize */
642 TRUE, /* pc_relative */
643 0, /* bitpos */
644 complain_overflow_signed, /* complain_on_overflow */
645 bfd_elf_generic_reloc, /* special_function */
a6bb11b2 646 AARCH64_R_STR (ADR_PREL_LO21), /* name */
a06ea964
NC		 647 FALSE, /* partial_inplace */
648 0x1fffff, /* src_mask */
649 0x1fffff, /* dst_mask */
650 TRUE), /* pcrel_offset */
651
652 /* ADRP: ((PG(S+A)-PG(P)) >> 12) & 0x1fffff */
a6bb11b2 653 HOWTO (AARCH64_R (ADR_PREL_PG_HI21), /* type */
a06ea964
NC		 654 12, /* rightshift */
655 2, /* size (0 = byte, 1 = short, 2 = long) */
656 21, /* bitsize */
657 TRUE, /* pc_relative */
658 0, /* bitpos */
659 complain_overflow_signed, /* complain_on_overflow */
660 bfd_elf_generic_reloc, /* special_function */
a6bb11b2 661 AARCH64_R_STR (ADR_PREL_PG_HI21), /* name */
a06ea964
NC		 662 FALSE, /* partial_inplace */
663 0x1fffff, /* src_mask */
664 0x1fffff, /* dst_mask */
665 TRUE), /* pcrel_offset */
666
667 /* ADRP: ((PG(S+A)-PG(P)) >> 12) & 0x1fffff [no overflow check] */
a6bb11b2 668 HOWTO64 (AARCH64_R (ADR_PREL_PG_HI21_NC), /* type */
a06ea964
NC		 669 12, /* rightshift */
670 2, /* size (0 = byte, 1 = short, 2 = long) */
671 21, /* bitsize */
672 TRUE, /* pc_relative */
673 0, /* bitpos */
674 complain_overflow_dont, /* complain_on_overflow */
675 bfd_elf_generic_reloc, /* special_function */
a6bb11b2 676 AARCH64_R_STR (ADR_PREL_PG_HI21_NC), /* name */
a06ea964
NC		 677 FALSE, /* partial_inplace */
678 0x1fffff, /* src_mask */
679 0x1fffff, /* dst_mask */
680 TRUE), /* pcrel_offset */
681
682 /* ADD: (S+A) & 0xfff [no overflow check] */
a6bb11b2 683 HOWTO (AARCH64_R (ADD_ABS_LO12_NC), /* type */
a06ea964
NC		 684 0, /* rightshift */
685 2, /* size (0 = byte, 1 = short, 2 = long) */
686 12, /* bitsize */
687 FALSE, /* pc_relative */
688 10, /* bitpos */
689 complain_overflow_dont, /* complain_on_overflow */
690 bfd_elf_generic_reloc, /* special_function */
a6bb11b2 691 AARCH64_R_STR (ADD_ABS_LO12_NC), /* name */
a06ea964
NC		 692 FALSE, /* partial_inplace */
693 0x3ffc00, /* src_mask */
694 0x3ffc00, /* dst_mask */
695 FALSE), /* pcrel_offset */
696
697 /* LD/ST8: (S+A) & 0xfff */
a6bb11b2 698 HOWTO (AARCH64_R (LDST8_ABS_LO12_NC), /* type */
a06ea964
NC		 699 0, /* rightshift */
700 2, /* size (0 = byte, 1 = short, 2 = long) */
701 12, /* bitsize */
702 FALSE, /* pc_relative */
703 0, /* bitpos */
704 complain_overflow_dont, /* complain_on_overflow */
705 bfd_elf_generic_reloc, /* special_function */
a6bb11b2 706 AARCH64_R_STR (LDST8_ABS_LO12_NC), /* name */
a06ea964
NC		 707 FALSE, /* partial_inplace */
708 0xfff, /* src_mask */
709 0xfff, /* dst_mask */
710 FALSE), /* pcrel_offset */
711
712 /* Relocations for control-flow instructions. */
713
714 /* TBZ/NZ: ((S+A-P) >> 2) & 0x3fff */
a6bb11b2 715 HOWTO (AARCH64_R (TSTBR14), /* type */
a06ea964
NC		 716 2, /* rightshift */
717 2, /* size (0 = byte, 1 = short, 2 = long) */
718 14, /* bitsize */
719 TRUE, /* pc_relative */
720 0, /* bitpos */
721 complain_overflow_signed, /* complain_on_overflow */
722 bfd_elf_generic_reloc, /* special_function */
a6bb11b2 723 AARCH64_R_STR (TSTBR14), /* name */
a06ea964
NC		 724 FALSE, /* partial_inplace */
725 0x3fff, /* src_mask */
726 0x3fff, /* dst_mask */
727 TRUE), /* pcrel_offset */
728
729 /* B.cond: ((S+A-P) >> 2) & 0x7ffff */
a6bb11b2 730 HOWTO (AARCH64_R (CONDBR19), /* type */
a06ea964
NC		 731 2, /* rightshift */
732 2, /* size (0 = byte, 1 = short, 2 = long) */
733 19, /* bitsize */
734 TRUE, /* pc_relative */
735 0, /* bitpos */
736 complain_overflow_signed, /* complain_on_overflow */
737 bfd_elf_generic_reloc, /* special_function */
a6bb11b2 738 AARCH64_R_STR (CONDBR19), /* name */
a06ea964
NC		 739 FALSE, /* partial_inplace */
740 0x7ffff, /* src_mask */
741 0x7ffff, /* dst_mask */
742 TRUE), /* pcrel_offset */
743
a06ea964 744 /* B: ((S+A-P) >> 2) & 0x3ffffff */
a6bb11b2 745 HOWTO (AARCH64_R (JUMP26), /* type */
a06ea964
NC		 746 2, /* rightshift */
747 2, /* size (0 = byte, 1 = short, 2 = long) */
748 26, /* bitsize */
749 TRUE, /* pc_relative */
750 0, /* bitpos */
751 complain_overflow_signed, /* complain_on_overflow */
752 bfd_elf_generic_reloc, /* special_function */
a6bb11b2 753 AARCH64_R_STR (JUMP26), /* name */
a06ea964
NC		 754 FALSE, /* partial_inplace */
755 0x3ffffff, /* src_mask */
756 0x3ffffff, /* dst_mask */
757 TRUE), /* pcrel_offset */
758
759 /* BL: ((S+A-P) >> 2) & 0x3ffffff */
a6bb11b2 760 HOWTO (AARCH64_R (CALL26), /* type */
a06ea964
NC		 761 2, /* rightshift */
762 2, /* size (0 = byte, 1 = short, 2 = long) */
763 26, /* bitsize */
764 TRUE, /* pc_relative */
765 0, /* bitpos */
766 complain_overflow_signed, /* complain_on_overflow */
767 bfd_elf_generic_reloc, /* special_function */
a6bb11b2 768 AARCH64_R_STR (CALL26), /* name */
a06ea964
NC		 769 FALSE, /* partial_inplace */
770 0x3ffffff, /* src_mask */
771 0x3ffffff, /* dst_mask */
772 TRUE), /* pcrel_offset */
773
774 /* LD/ST16: (S+A) & 0xffe */
a6bb11b2 775 HOWTO (AARCH64_R (LDST16_ABS_LO12_NC), /* type */
a06ea964
NC		 776 1, /* rightshift */
777 2, /* size (0 = byte, 1 = short, 2 = long) */
778 12, /* bitsize */
779 FALSE, /* pc_relative */
780 0, /* bitpos */
781 complain_overflow_dont, /* complain_on_overflow */
782 bfd_elf_generic_reloc, /* special_function */
a6bb11b2 783 AARCH64_R_STR (LDST16_ABS_LO12_NC), /* name */
a06ea964
NC		 784 FALSE, /* partial_inplace */
785 0xffe, /* src_mask */
786 0xffe, /* dst_mask */
787 FALSE), /* pcrel_offset */
788
789 /* LD/ST32: (S+A) & 0xffc */
a6bb11b2 790 HOWTO (AARCH64_R (LDST32_ABS_LO12_NC), /* type */
a06ea964
NC		 791 2, /* rightshift */
792 2, /* size (0 = byte, 1 = short, 2 = long) */
793 12, /* bitsize */
794 FALSE, /* pc_relative */
795 0, /* bitpos */
796 complain_overflow_dont, /* complain_on_overflow */
797 bfd_elf_generic_reloc, /* special_function */
a6bb11b2 798 AARCH64_R_STR (LDST32_ABS_LO12_NC), /* name */
a06ea964
NC		 799 FALSE, /* partial_inplace */
800 0xffc, /* src_mask */
801 0xffc, /* dst_mask */
802 FALSE), /* pcrel_offset */
803
804 /* LD/ST64: (S+A) & 0xff8 */
a6bb11b2 805 HOWTO (AARCH64_R (LDST64_ABS_LO12_NC), /* type */
a06ea964
NC		 806 3, /* rightshift */
807 2, /* size (0 = byte, 1 = short, 2 = long) */
808 12, /* bitsize */
809 FALSE, /* pc_relative */
810 0, /* bitpos */
811 complain_overflow_dont, /* complain_on_overflow */
812 bfd_elf_generic_reloc, /* special_function */
a6bb11b2 813 AARCH64_R_STR (LDST64_ABS_LO12_NC), /* name */
a06ea964
NC		 814 FALSE, /* partial_inplace */
815 0xff8, /* src_mask */
816 0xff8, /* dst_mask */
817 FALSE), /* pcrel_offset */
818
a06ea964 819 /* LD/ST128: (S+A) & 0xff0 */
a6bb11b2 820 HOWTO (AARCH64_R (LDST128_ABS_LO12_NC), /* type */
a06ea964
NC		 821 4, /* rightshift */
822 2, /* size (0 = byte, 1 = short, 2 = long) */
823 12, /* bitsize */
824 FALSE, /* pc_relative */
825 0, /* bitpos */
826 complain_overflow_dont, /* complain_on_overflow */
827 bfd_elf_generic_reloc, /* special_function */
a6bb11b2 828 AARCH64_R_STR (LDST128_ABS_LO12_NC), /* name */
a06ea964
NC		 829 FALSE, /* partial_inplace */
830 0xff0, /* src_mask */
831 0xff0, /* dst_mask */
832 FALSE), /* pcrel_offset */
833
f41aef5f
RE		 834 /* Set a load-literal immediate field to bits
835 0x1FFFFC of G(S)-P */
a6bb11b2 836 HOWTO (AARCH64_R (GOT_LD_PREL19), /* type */
f41aef5f
RE		 837 2, /* rightshift */
838 2, /* size (0 = byte,1 = short,2 = long) */
839 19, /* bitsize */
840 TRUE, /* pc_relative */
841 0, /* bitpos */
842 complain_overflow_signed, /* complain_on_overflow */
843 bfd_elf_generic_reloc, /* special_function */
a6bb11b2 844 AARCH64_R_STR (GOT_LD_PREL19), /* name */
f41aef5f
RE		 845 FALSE, /* partial_inplace */
846 0xffffe0, /* src_mask */
847 0xffffe0, /* dst_mask */
848 TRUE), /* pcrel_offset */
849
a06ea964
NC		 850 /* Get to the page for the GOT entry for the symbol
851 (G(S) - P) using an ADRP instruction. */
a6bb11b2 852 HOWTO (AARCH64_R (ADR_GOT_PAGE), /* type */
a06ea964
NC		 853 12, /* rightshift */
854 2, /* size (0 = byte, 1 = short, 2 = long) */
855 21, /* bitsize */
856 TRUE, /* pc_relative */
857 0, /* bitpos */
858 complain_overflow_dont, /* complain_on_overflow */
859 bfd_elf_generic_reloc, /* special_function */
a6bb11b2 860 AARCH64_R_STR (ADR_GOT_PAGE), /* name */
a06ea964
NC		 861 FALSE, /* partial_inplace */
862 0x1fffff, /* src_mask */
863 0x1fffff, /* dst_mask */
864 TRUE), /* pcrel_offset */
865
a6bb11b2
YZ		 866 /* LD64: GOT offset G(S) & 0xff8 */
867 HOWTO64 (AARCH64_R (LD64_GOT_LO12_NC), /* type */
a06ea964
NC		 868 3, /* rightshift */
869 2, /* size (0 = byte, 1 = short, 2 = long) */
870 12, /* bitsize */
871 FALSE, /* pc_relative */
872 0, /* bitpos */
873 complain_overflow_dont, /* complain_on_overflow */
874 bfd_elf_generic_reloc, /* special_function */
a6bb11b2 875 AARCH64_R_STR (LD64_GOT_LO12_NC), /* name */
a06ea964
NC		 876 FALSE, /* partial_inplace */
877 0xff8, /* src_mask */
878 0xff8, /* dst_mask */
a6bb11b2 879 FALSE), /* pcrel_offset */
a06ea964 880
a6bb11b2
YZ		 881 /* LD32: GOT offset G(S) & 0xffc */
882 HOWTO32 (AARCH64_R (LD32_GOT_LO12_NC), /* type */
883 2, /* rightshift */
884 2, /* size (0 = byte, 1 = short, 2 = long) */
885 12, /* bitsize */
886 FALSE, /* pc_relative */
887 0, /* bitpos */
888 complain_overflow_dont, /* complain_on_overflow */
889 bfd_elf_generic_reloc, /* special_function */
890 AARCH64_R_STR (LD32_GOT_LO12_NC), /* name */
891 FALSE, /* partial_inplace */
892 0xffc, /* src_mask */
893 0xffc, /* dst_mask */
894 FALSE), /* pcrel_offset */
a06ea964 895
ca632371
RL		 896 /* Lower 16 bits of GOT offset for the symbol. */
897 HOWTO64 (AARCH64_R (MOVW_GOTOFF_G0_NC), /* type */
898 0, /* rightshift */
899 2, /* size (0 = byte, 1 = short, 2 = long) */
900 16, /* bitsize */
901 FALSE, /* pc_relative */
902 0, /* bitpos */
903 complain_overflow_dont, /* complain_on_overflow */
904 bfd_elf_generic_reloc, /* special_function */
905 AARCH64_R_STR (MOVW_GOTOFF_G0_NC), /* name */
906 FALSE, /* partial_inplace */
907 0xffff, /* src_mask */
908 0xffff, /* dst_mask */
909 FALSE), /* pcrel_offset */
910
654248e7
RL		 911 /* Higher 16 bits of GOT offset for the symbol. */
912 HOWTO64 (AARCH64_R (MOVW_GOTOFF_G1), /* type */
913 16, /* rightshift */
914 2, /* size (0 = byte, 1 = short, 2 = long) */
915 16, /* bitsize */
916 FALSE, /* pc_relative */
917 0, /* bitpos */
918 complain_overflow_unsigned, /* complain_on_overflow */
919 bfd_elf_generic_reloc, /* special_function */
920 AARCH64_R_STR (MOVW_GOTOFF_G1), /* name */
921 FALSE, /* partial_inplace */
922 0xffff, /* src_mask */
923 0xffff, /* dst_mask */
924 FALSE), /* pcrel_offset */
925
87f5fbcc
RL		 926 /* LD64: GOT offset for the symbol. */
927 HOWTO64 (AARCH64_R (LD64_GOTOFF_LO15), /* type */
928 3, /* rightshift */
929 2, /* size (0 = byte, 1 = short, 2 = long) */
930 12, /* bitsize */
931 FALSE, /* pc_relative */
932 0, /* bitpos */
933 complain_overflow_unsigned, /* complain_on_overflow */
934 bfd_elf_generic_reloc, /* special_function */
935 AARCH64_R_STR (LD64_GOTOFF_LO15), /* name */
936 FALSE, /* partial_inplace */
937 0x7ff8, /* src_mask */
938 0x7ff8, /* dst_mask */
939 FALSE), /* pcrel_offset */
940
3d715ce4
JW		 941 /* LD32: GOT offset to the page address of GOT table.
942 (G(S) - PAGE (_GLOBAL_OFFSET_TABLE_)) & 0x5ffc. */
943 HOWTO32 (AARCH64_R (LD32_GOTPAGE_LO14), /* type */
944 2, /* rightshift */
945 2, /* size (0 = byte, 1 = short, 2 = long) */
946 12, /* bitsize */
947 FALSE, /* pc_relative */
948 0, /* bitpos */
949 complain_overflow_unsigned, /* complain_on_overflow */
950 bfd_elf_generic_reloc, /* special_function */
951 AARCH64_R_STR (LD32_GOTPAGE_LO14), /* name */
952 FALSE, /* partial_inplace */
953 0x5ffc, /* src_mask */
954 0x5ffc, /* dst_mask */
955 FALSE), /* pcrel_offset */
956
a921b5bd
JW		 957 /* LD64: GOT offset to the page address of GOT table.
958 (G(S) - PAGE (_GLOBAL_OFFSET_TABLE_)) & 0x7ff8. */
959 HOWTO64 (AARCH64_R (LD64_GOTPAGE_LO15), /* type */
960 3, /* rightshift */
961 2, /* size (0 = byte, 1 = short, 2 = long) */
962 12, /* bitsize */
963 FALSE, /* pc_relative */
964 0, /* bitpos */
965 complain_overflow_unsigned, /* complain_on_overflow */
966 bfd_elf_generic_reloc, /* special_function */
967 AARCH64_R_STR (LD64_GOTPAGE_LO15), /* name */
968 FALSE, /* partial_inplace */
969 0x7ff8, /* src_mask */
970 0x7ff8, /* dst_mask */
971 FALSE), /* pcrel_offset */
972
a06ea964
NC		 973 /* Get to the page for the GOT entry for the symbol
974 (G(S) - P) using an ADRP instruction. */
a6bb11b2 975 HOWTO (AARCH64_R (TLSGD_ADR_PAGE21), /* type */
a06ea964
NC		 976 12, /* rightshift */
977 2, /* size (0 = byte, 1 = short, 2 = long) */
978 21, /* bitsize */
979 TRUE, /* pc_relative */
980 0, /* bitpos */
981 complain_overflow_dont, /* complain_on_overflow */
982 bfd_elf_generic_reloc, /* special_function */
a6bb11b2 983 AARCH64_R_STR (TLSGD_ADR_PAGE21), /* name */
a06ea964
NC		 984 FALSE, /* partial_inplace */
985 0x1fffff, /* src_mask */
986 0x1fffff, /* dst_mask */
987 TRUE), /* pcrel_offset */
988
3c12b054
MS		 989 HOWTO (AARCH64_R (TLSGD_ADR_PREL21), /* type */
990 0, /* rightshift */
991 2, /* size (0 = byte, 1 = short, 2 = long) */
992 21, /* bitsize */
993 TRUE, /* pc_relative */
994 0, /* bitpos */
995 complain_overflow_dont, /* complain_on_overflow */
996 bfd_elf_generic_reloc, /* special_function */
997 AARCH64_R_STR (TLSGD_ADR_PREL21), /* name */
998 FALSE, /* partial_inplace */
999 0x1fffff, /* src_mask */
1000 0x1fffff, /* dst_mask */
1001 TRUE), /* pcrel_offset */
1002
a06ea964 1003 /* ADD: GOT offset G(S) & 0xff8 [no overflow check] */
a6bb11b2 1004 HOWTO (AARCH64_R (TLSGD_ADD_LO12_NC), /* type */
a06ea964
NC		 1005 0, /* rightshift */
1006 2, /* size (0 = byte, 1 = short, 2 = long) */
1007 12, /* bitsize */
1008 FALSE, /* pc_relative */
1009 0, /* bitpos */
1010 complain_overflow_dont, /* complain_on_overflow */
1011 bfd_elf_generic_reloc, /* special_function */
a6bb11b2 1012 AARCH64_R_STR (TLSGD_ADD_LO12_NC), /* name */
a06ea964
NC		 1013 FALSE, /* partial_inplace */
1014 0xfff, /* src_mask */
1015 0xfff, /* dst_mask */
1016 FALSE), /* pcrel_offset */
1017
3e8286c0
RL		 1018 /* Lower 16 bits of GOT offset to tls_index. */
1019 HOWTO64 (AARCH64_R (TLSGD_MOVW_G0_NC), /* type */
1020 0, /* rightshift */
1021 2, /* size (0 = byte, 1 = short, 2 = long) */
1022 16, /* bitsize */
1023 FALSE, /* pc_relative */
1024 0, /* bitpos */
1025 complain_overflow_dont, /* complain_on_overflow */
1026 bfd_elf_generic_reloc, /* special_function */
1027 AARCH64_R_STR (TLSGD_MOVW_G0_NC), /* name */
1028 FALSE, /* partial_inplace */
1029 0xffff, /* src_mask */
1030 0xffff, /* dst_mask */
1031 FALSE), /* pcrel_offset */
1032
1aa66fb1
RL		 1033 /* Higher 16 bits of GOT offset to tls_index. */
1034 HOWTO64 (AARCH64_R (TLSGD_MOVW_G1), /* type */
1035 16, /* rightshift */
1036 2, /* size (0 = byte, 1 = short, 2 = long) */
1037 16, /* bitsize */
1038 FALSE, /* pc_relative */
1039 0, /* bitpos */
1040 complain_overflow_unsigned, /* complain_on_overflow */
1041 bfd_elf_generic_reloc, /* special_function */
1042 AARCH64_R_STR (TLSGD_MOVW_G1), /* name */
1043 FALSE, /* partial_inplace */
1044 0xffff, /* src_mask */
1045 0xffff, /* dst_mask */
1046 FALSE), /* pcrel_offset */
1047
a6bb11b2 1048 HOWTO (AARCH64_R (TLSIE_ADR_GOTTPREL_PAGE21), /* type */
a06ea964
NC		 1049 12, /* rightshift */
1050 2, /* size (0 = byte, 1 = short, 2 = long) */
1051 21, /* bitsize */
1052 FALSE, /* pc_relative */
1053 0, /* bitpos */
1054 complain_overflow_dont, /* complain_on_overflow */
1055 bfd_elf_generic_reloc, /* special_function */
a6bb11b2 1056 AARCH64_R_STR (TLSIE_ADR_GOTTPREL_PAGE21), /* name */
a06ea964
NC		 1057 FALSE, /* partial_inplace */
1058 0x1fffff, /* src_mask */
1059 0x1fffff, /* dst_mask */
1060 FALSE), /* pcrel_offset */
1061
a6bb11b2 1062 HOWTO64 (AARCH64_R (TLSIE_LD64_GOTTPREL_LO12_NC), /* type */
a06ea964
NC		 1063 3, /* rightshift */
1064 2, /* size (0 = byte, 1 = short, 2 = long) */
1065 12, /* bitsize */
1066 FALSE, /* pc_relative */
1067 0, /* bitpos */
1068 complain_overflow_dont, /* complain_on_overflow */
1069 bfd_elf_generic_reloc, /* special_function */
a6bb11b2 1070 AARCH64_R_STR (TLSIE_LD64_GOTTPREL_LO12_NC), /* name */
a06ea964
NC		 1071 FALSE, /* partial_inplace */
1072 0xff8, /* src_mask */
1073 0xff8, /* dst_mask */
1074 FALSE), /* pcrel_offset */
1075
a6bb11b2
YZ		 1076 HOWTO32 (AARCH64_R (TLSIE_LD32_GOTTPREL_LO12_NC), /* type */
1077 2, /* rightshift */
1078 2, /* size (0 = byte, 1 = short, 2 = long) */
1079 12, /* bitsize */
1080 FALSE, /* pc_relative */
1081 0, /* bitpos */
1082 complain_overflow_dont, /* complain_on_overflow */
1083 bfd_elf_generic_reloc, /* special_function */
1084 AARCH64_R_STR (TLSIE_LD32_GOTTPREL_LO12_NC), /* name */
1085 FALSE, /* partial_inplace */
1086 0xffc, /* src_mask */
1087 0xffc, /* dst_mask */
1088 FALSE), /* pcrel_offset */
1089
1090 HOWTO (AARCH64_R (TLSIE_LD_GOTTPREL_PREL19), /* type */
bb3f9ed8 1091 2, /* rightshift */
a06ea964 1092 2, /* size (0 = byte, 1 = short, 2 = long) */
043bf05a 1093 19, /* bitsize */
a06ea964
NC		 1094 FALSE, /* pc_relative */
1095 0, /* bitpos */
1096 complain_overflow_dont, /* complain_on_overflow */
1097 bfd_elf_generic_reloc, /* special_function */
a6bb11b2 1098 AARCH64_R_STR (TLSIE_LD_GOTTPREL_PREL19), /* name */
a06ea964
NC		 1099 FALSE, /* partial_inplace */
1100 0x1ffffc, /* src_mask */
1101 0x1ffffc, /* dst_mask */
1102 FALSE), /* pcrel_offset */
1103
3b957e5b
RL		 1104 HOWTO64 (AARCH64_R (TLSIE_MOVW_GOTTPREL_G0_NC), /* type */
1105 0, /* rightshift */
1106 2, /* size (0 = byte, 1 = short, 2 = long) */
1107 16, /* bitsize */
1108 FALSE, /* pc_relative */
1109 0, /* bitpos */
1110 complain_overflow_dont, /* complain_on_overflow */
1111 bfd_elf_generic_reloc, /* special_function */
1112 AARCH64_R_STR (TLSIE_MOVW_GOTTPREL_G0_NC), /* name */
1113 FALSE, /* partial_inplace */
1114 0xffff, /* src_mask */
1115 0xffff, /* dst_mask */
1116 FALSE), /* pcrel_offset */
1117
1118 HOWTO64 (AARCH64_R (TLSIE_MOVW_GOTTPREL_G1), /* type */
1119 16, /* rightshift */
1120 2, /* size (0 = byte, 1 = short, 2 = long) */
1121 16, /* bitsize */
1122 FALSE, /* pc_relative */
1123 0, /* bitpos */
1124 complain_overflow_unsigned, /* complain_on_overflow */
1125 bfd_elf_generic_reloc, /* special_function */
1126 AARCH64_R_STR (TLSIE_MOVW_GOTTPREL_G1), /* name */
1127 FALSE, /* partial_inplace */
1128 0xffff, /* src_mask */
1129 0xffff, /* dst_mask */
1130 FALSE), /* pcrel_offset */
1131
49df5539
JW		 1132 /* ADD: bit[23:12] of byte offset to module TLS base address. */
1133 HOWTO (AARCH64_R (TLSLD_ADD_DTPREL_HI12), /* type */
1134 12, /* rightshift */
1135 2, /* size (0 = byte, 1 = short, 2 = long) */
1136 12, /* bitsize */
1137 FALSE, /* pc_relative */
1138 0, /* bitpos */
1139 complain_overflow_unsigned, /* complain_on_overflow */
1140 bfd_elf_generic_reloc, /* special_function */
1141 AARCH64_R_STR (TLSLD_ADD_DTPREL_HI12), /* name */
1142 FALSE, /* partial_inplace */
1143 0xfff, /* src_mask */
1144 0xfff, /* dst_mask */
1145 FALSE), /* pcrel_offset */
1146
70151fb5
JW		 1147 /* Unsigned 12 bit byte offset to module TLS base address. */
1148 HOWTO (AARCH64_R (TLSLD_ADD_DTPREL_LO12), /* type */
1149 0, /* rightshift */
1150 2, /* size (0 = byte, 1 = short, 2 = long) */
1151 12, /* bitsize */
1152 FALSE, /* pc_relative */
1153 0, /* bitpos */
1154 complain_overflow_unsigned, /* complain_on_overflow */
1155 bfd_elf_generic_reloc, /* special_function */
1156 AARCH64_R_STR (TLSLD_ADD_DTPREL_LO12), /* name */
1157 FALSE, /* partial_inplace */
1158 0xfff, /* src_mask */
1159 0xfff, /* dst_mask */
1160 FALSE), /* pcrel_offset */
13289c10
JW		 1161
1162 /* No overflow check version of BFD_RELOC_AARCH64_TLSLD_ADD_DTPREL_LO12. */
1163 HOWTO (AARCH64_R (TLSLD_ADD_DTPREL_LO12_NC), /* type */
1164 0, /* rightshift */
1165 2, /* size (0 = byte, 1 = short, 2 = long) */
1166 12, /* bitsize */
1167 FALSE, /* pc_relative */
1168 0, /* bitpos */
1169 complain_overflow_dont, /* complain_on_overflow */
1170 bfd_elf_generic_reloc, /* special_function */
1171 AARCH64_R_STR (TLSLD_ADD_DTPREL_LO12_NC), /* name */
1172 FALSE, /* partial_inplace */
1173 0xfff, /* src_mask */
1174 0xfff, /* dst_mask */
1175 FALSE), /* pcrel_offset */
70151fb5 1176
a12fad50
JW		 1177 /* ADD: GOT offset G(S) & 0xff8 [no overflow check] */
1178 HOWTO (AARCH64_R (TLSLD_ADD_LO12_NC), /* type */
1179 0, /* rightshift */
1180 2, /* size (0 = byte, 1 = short, 2 = long) */
1181 12, /* bitsize */
1182 FALSE, /* pc_relative */
1183 0, /* bitpos */
1184 complain_overflow_dont, /* complain_on_overflow */
1185 bfd_elf_generic_reloc, /* special_function */
1186 AARCH64_R_STR (TLSLD_ADD_LO12_NC), /* name */
1187 FALSE, /* partial_inplace */
1188 0xfff, /* src_mask */
1189 0xfff, /* dst_mask */
1190 FALSE), /* pcrel_offset */
1191
1107e076
JW		 1192 /* Get to the page for the GOT entry for the symbol
1193 (G(S) - P) using an ADRP instruction. */
1194 HOWTO (AARCH64_R (TLSLD_ADR_PAGE21), /* type */
1195 12, /* rightshift */
1196 2, /* size (0 = byte, 1 = short, 2 = long) */
1197 21, /* bitsize */
1198 TRUE, /* pc_relative */
1199 0, /* bitpos */
1200 complain_overflow_signed, /* complain_on_overflow */
1201 bfd_elf_generic_reloc, /* special_function */
1202 AARCH64_R_STR (TLSLD_ADR_PAGE21), /* name */
1203 FALSE, /* partial_inplace */
1204 0x1fffff, /* src_mask */
1205 0x1fffff, /* dst_mask */
1206 TRUE), /* pcrel_offset */
1207
6c37fedc
JW		 1208 HOWTO (AARCH64_R (TLSLD_ADR_PREL21), /* type */
1209 0, /* rightshift */
1210 2, /* size (0 = byte, 1 = short, 2 = long) */
1211 21, /* bitsize */
1212 TRUE, /* pc_relative */
1213 0, /* bitpos */
1214 complain_overflow_signed, /* complain_on_overflow */
1215 bfd_elf_generic_reloc, /* special_function */
1216 AARCH64_R_STR (TLSLD_ADR_PREL21), /* name */
1217 FALSE, /* partial_inplace */
1218 0x1fffff, /* src_mask */
1219 0x1fffff, /* dst_mask */
1220 TRUE), /* pcrel_offset */
1221
4c562523
JW		 1222 /* LD/ST16: bit[11:1] of byte offset to module TLS base address. */
1223 HOWTO64 (AARCH64_R (TLSLD_LDST16_DTPREL_LO12), /* type */
1224 1, /* rightshift */
1225 2, /* size (0 = byte, 1 = short, 2 = long) */
1226 11, /* bitsize */
1227 FALSE, /* pc_relative */
1228 10, /* bitpos */
1229 complain_overflow_unsigned, /* complain_on_overflow */
1230 bfd_elf_generic_reloc, /* special_function */
1231 AARCH64_R_STR (TLSLD_LDST16_DTPREL_LO12), /* name */
1232 FALSE, /* partial_inplace */
1233 0x1ffc00, /* src_mask */
1234 0x1ffc00, /* dst_mask */
1235 FALSE), /* pcrel_offset */
1236
1237 /* Same as BFD_RELOC_AARCH64_TLSLD_LDST16_DTPREL_LO12, but no overflow check. */
1238 HOWTO64 (AARCH64_R (TLSLD_LDST16_DTPREL_LO12_NC), /* type */
1239 1, /* rightshift */
1240 2, /* size (0 = byte, 1 = short, 2 = long) */
1241 11, /* bitsize */
1242 FALSE, /* pc_relative */
1243 10, /* bitpos */
1244 complain_overflow_dont, /* complain_on_overflow */
1245 bfd_elf_generic_reloc, /* special_function */
1246 AARCH64_R_STR (TLSLD_LDST16_DTPREL_LO12_NC), /* name */
1247 FALSE, /* partial_inplace */
1248 0x1ffc00, /* src_mask */
1249 0x1ffc00, /* dst_mask */
1250 FALSE), /* pcrel_offset */
1251
1252 /* LD/ST32: bit[11:2] of byte offset to module TLS base address. */
1253 HOWTO64 (AARCH64_R (TLSLD_LDST32_DTPREL_LO12), /* type */
1254 2, /* rightshift */
1255 2, /* size (0 = byte, 1 = short, 2 = long) */
1256 10, /* bitsize */
1257 FALSE, /* pc_relative */
1258 10, /* bitpos */
1259 complain_overflow_unsigned, /* complain_on_overflow */
1260 bfd_elf_generic_reloc, /* special_function */
1261 AARCH64_R_STR (TLSLD_LDST32_DTPREL_LO12), /* name */
1262 FALSE, /* partial_inplace */
1263 0x3ffc00, /* src_mask */
1264 0x3ffc00, /* dst_mask */
1265 FALSE), /* pcrel_offset */
1266
1267 /* Same as BFD_RELOC_AARCH64_TLSLD_LDST32_DTPREL_LO12, but no overflow check. */
1268 HOWTO64 (AARCH64_R (TLSLD_LDST32_DTPREL_LO12_NC), /* type */
1269 2, /* rightshift */
1270 2, /* size (0 = byte, 1 = short, 2 = long) */
1271 10, /* bitsize */
1272 FALSE, /* pc_relative */
1273 10, /* bitpos */
1274 complain_overflow_dont, /* complain_on_overflow */
1275 bfd_elf_generic_reloc, /* special_function */
1276 AARCH64_R_STR (TLSLD_LDST32_DTPREL_LO12_NC), /* name */
1277 FALSE, /* partial_inplace */
1278 0xffc00, /* src_mask */
1279 0xffc00, /* dst_mask */
1280 FALSE), /* pcrel_offset */
1281
1282 /* LD/ST64: bit[11:3] of byte offset to module TLS base address. */
1283 HOWTO64 (AARCH64_R (TLSLD_LDST64_DTPREL_LO12), /* type */
1284 3, /* rightshift */
1285 2, /* size (0 = byte, 1 = short, 2 = long) */
1286 9, /* bitsize */
1287 FALSE, /* pc_relative */
1288 10, /* bitpos */
1289 complain_overflow_unsigned, /* complain_on_overflow */
1290 bfd_elf_generic_reloc, /* special_function */
1291 AARCH64_R_STR (TLSLD_LDST64_DTPREL_LO12), /* name */
1292 FALSE, /* partial_inplace */
1293 0x3ffc00, /* src_mask */
1294 0x3ffc00, /* dst_mask */
1295 FALSE), /* pcrel_offset */
1296
1297 /* Same as BFD_RELOC_AARCH64_TLSLD_LDST64_DTPREL_LO12, but no overflow check. */
1298 HOWTO64 (AARCH64_R (TLSLD_LDST64_DTPREL_LO12_NC), /* type */
1299 3, /* rightshift */
1300 2, /* size (0 = byte, 1 = short, 2 = long) */
1301 9, /* bitsize */
1302 FALSE, /* pc_relative */
1303 10, /* bitpos */
1304 complain_overflow_dont, /* complain_on_overflow */
1305 bfd_elf_generic_reloc, /* special_function */
1306 AARCH64_R_STR (TLSLD_LDST64_DTPREL_LO12_NC), /* name */
1307 FALSE, /* partial_inplace */
1308 0x7fc00, /* src_mask */
1309 0x7fc00, /* dst_mask */
1310 FALSE), /* pcrel_offset */
1311
1312 /* LD/ST8: bit[11:0] of byte offset to module TLS base address. */
1313 HOWTO64 (AARCH64_R (TLSLD_LDST8_DTPREL_LO12), /* type */
1314 0, /* rightshift */
1315 2, /* size (0 = byte, 1 = short, 2 = long) */
1316 12, /* bitsize */
1317 FALSE, /* pc_relative */
1318 10, /* bitpos */
1319 complain_overflow_unsigned, /* complain_on_overflow */
1320 bfd_elf_generic_reloc, /* special_function */
1321 AARCH64_R_STR (TLSLD_LDST8_DTPREL_LO12), /* name */
1322 FALSE, /* partial_inplace */
1323 0x3ffc00, /* src_mask */
1324 0x3ffc00, /* dst_mask */
1325 FALSE), /* pcrel_offset */
1326
1327 /* Same as BFD_RELOC_AARCH64_TLSLD_LDST8_DTPREL_LO12, but no overflow check. */
1328 HOWTO64 (AARCH64_R (TLSLD_LDST8_DTPREL_LO12_NC), /* type */
1329 0, /* rightshift */
1330 2, /* size (0 = byte, 1 = short, 2 = long) */
1331 12, /* bitsize */
1332 FALSE, /* pc_relative */
1333 10, /* bitpos */
1334 complain_overflow_dont, /* complain_on_overflow */
1335 bfd_elf_generic_reloc, /* special_function */
1336 AARCH64_R_STR (TLSLD_LDST8_DTPREL_LO12_NC), /* name */
1337 FALSE, /* partial_inplace */
1338 0x3ffc00, /* src_mask */
1339 0x3ffc00, /* dst_mask */
1340 FALSE), /* pcrel_offset */
1341
49df5539
JW		 1342 /* MOVZ: bit[15:0] of byte offset to module TLS base address. */
1343 HOWTO (AARCH64_R (TLSLD_MOVW_DTPREL_G0), /* type */
1344 0, /* rightshift */
1345 2, /* size (0 = byte, 1 = short, 2 = long) */
1346 16, /* bitsize */
1347 FALSE, /* pc_relative */
1348 0, /* bitpos */
1349 complain_overflow_unsigned, /* complain_on_overflow */
1350 bfd_elf_generic_reloc, /* special_function */
1351 AARCH64_R_STR (TLSLD_MOVW_DTPREL_G0), /* name */
1352 FALSE, /* partial_inplace */
1353 0xffff, /* src_mask */
1354 0xffff, /* dst_mask */
1355 FALSE), /* pcrel_offset */
1356
1357 /* No overflow check version of BFD_RELOC_AARCH64_TLSLD_MOVW_DTPREL_G0. */
1358 HOWTO (AARCH64_R (TLSLD_MOVW_DTPREL_G0_NC), /* type */
1359 0, /* rightshift */
1360 2, /* size (0 = byte, 1 = short, 2 = long) */
1361 16, /* bitsize */
1362 FALSE, /* pc_relative */
1363 0, /* bitpos */
1364 complain_overflow_dont, /* complain_on_overflow */
1365 bfd_elf_generic_reloc, /* special_function */
1366 AARCH64_R_STR (TLSLD_MOVW_DTPREL_G0_NC), /* name */
1367 FALSE, /* partial_inplace */
1368 0xffff, /* src_mask */
1369 0xffff, /* dst_mask */
1370 FALSE), /* pcrel_offset */
1371
1372 /* MOVZ: bit[31:16] of byte offset to module TLS base address. */
1373 HOWTO (AARCH64_R (TLSLD_MOVW_DTPREL_G1), /* type */
1374 16, /* rightshift */
1375 2, /* size (0 = byte, 1 = short, 2 = long) */
1376 16, /* bitsize */
1377 FALSE, /* pc_relative */
1378 0, /* bitpos */
1379 complain_overflow_unsigned, /* complain_on_overflow */
1380 bfd_elf_generic_reloc, /* special_function */
1381 AARCH64_R_STR (TLSLD_MOVW_DTPREL_G1), /* name */
1382 FALSE, /* partial_inplace */
1383 0xffff, /* src_mask */
1384 0xffff, /* dst_mask */
1385 FALSE), /* pcrel_offset */
1386
1387 /* No overflow check version of BFD_RELOC_AARCH64_TLSLD_MOVW_DTPREL_G1. */
1388 HOWTO64 (AARCH64_R (TLSLD_MOVW_DTPREL_G1_NC), /* type */
1389 16, /* rightshift */
1390 2, /* size (0 = byte, 1 = short, 2 = long) */
1391 16, /* bitsize */
1392 FALSE, /* pc_relative */
1393 0, /* bitpos */
1394 complain_overflow_dont, /* complain_on_overflow */
1395 bfd_elf_generic_reloc, /* special_function */
1396 AARCH64_R_STR (TLSLD_MOVW_DTPREL_G1_NC), /* name */
1397 FALSE, /* partial_inplace */
1398 0xffff, /* src_mask */
1399 0xffff, /* dst_mask */
1400 FALSE), /* pcrel_offset */
1401
1402 /* MOVZ: bit[47:32] of byte offset to module TLS base address. */
1403 HOWTO64 (AARCH64_R (TLSLD_MOVW_DTPREL_G2), /* type */
1404 32, /* rightshift */
1405 2, /* size (0 = byte, 1 = short, 2 = long) */
1406 16, /* bitsize */
1407 FALSE, /* pc_relative */
1408 0, /* bitpos */
1409 complain_overflow_unsigned, /* complain_on_overflow */
1410 bfd_elf_generic_reloc, /* special_function */
1411 AARCH64_R_STR (TLSLD_MOVW_DTPREL_G2), /* name */
1412 FALSE, /* partial_inplace */
1413 0xffff, /* src_mask */
1414 0xffff, /* dst_mask */
1415 FALSE), /* pcrel_offset */
1416
a6bb11b2 1417 HOWTO64 (AARCH64_R (TLSLE_MOVW_TPREL_G2), /* type */
bb3f9ed8 1418 32, /* rightshift */
a06ea964 1419 2, /* size (0 = byte, 1 = short, 2 = long) */
07875fbc 1420 16, /* bitsize */
a06ea964
NC		 1421 FALSE, /* pc_relative */
1422 0, /* bitpos */
0172429c 1423 complain_overflow_unsigned, /* complain_on_overflow */
a06ea964 1424 bfd_elf_generic_reloc, /* special_function */
a6bb11b2 1425 AARCH64_R_STR (TLSLE_MOVW_TPREL_G2), /* name */
a06ea964
NC		 1426 FALSE, /* partial_inplace */
1427 0xffff, /* src_mask */
1428 0xffff, /* dst_mask */
1429 FALSE), /* pcrel_offset */
1430
a6bb11b2 1431 HOWTO (AARCH64_R (TLSLE_MOVW_TPREL_G1), /* type */
bb3f9ed8 1432 16, /* rightshift */
a06ea964 1433 2, /* size (0 = byte, 1 = short, 2 = long) */
07875fbc 1434 16, /* bitsize */
a06ea964
NC		 1435 FALSE, /* pc_relative */
1436 0, /* bitpos */
1437 complain_overflow_dont, /* complain_on_overflow */
1438 bfd_elf_generic_reloc, /* special_function */
a6bb11b2 1439 AARCH64_R_STR (TLSLE_MOVW_TPREL_G1), /* name */
a06ea964
NC		 1440 FALSE, /* partial_inplace */
1441 0xffff, /* src_mask */
1442 0xffff, /* dst_mask */
1443 FALSE), /* pcrel_offset */
1444
a6bb11b2 1445 HOWTO64 (AARCH64_R (TLSLE_MOVW_TPREL_G1_NC), /* type */
bb3f9ed8 1446 16, /* rightshift */
a06ea964 1447 2, /* size (0 = byte, 1 = short, 2 = long) */
07875fbc 1448 16, /* bitsize */
a06ea964
NC		 1449 FALSE, /* pc_relative */
1450 0, /* bitpos */
1451 complain_overflow_dont, /* complain_on_overflow */
1452 bfd_elf_generic_reloc, /* special_function */
a6bb11b2 1453 AARCH64_R_STR (TLSLE_MOVW_TPREL_G1_NC), /* name */
a06ea964
NC		 1454 FALSE, /* partial_inplace */
1455 0xffff, /* src_mask */
1456 0xffff, /* dst_mask */
1457 FALSE), /* pcrel_offset */
1458
a6bb11b2 1459 HOWTO (AARCH64_R (TLSLE_MOVW_TPREL_G0), /* type */
a06ea964
NC		 1460 0, /* rightshift */
1461 2, /* size (0 = byte, 1 = short, 2 = long) */
07875fbc 1462 16, /* bitsize */
a06ea964
NC		 1463 FALSE, /* pc_relative */
1464 0, /* bitpos */
1465 complain_overflow_dont, /* complain_on_overflow */
1466 bfd_elf_generic_reloc, /* special_function */
a6bb11b2 1467 AARCH64_R_STR (TLSLE_MOVW_TPREL_G0), /* name */
a06ea964
NC		 1468 FALSE, /* partial_inplace */
1469 0xffff, /* src_mask */
1470 0xffff, /* dst_mask */
1471 FALSE), /* pcrel_offset */
1472
a6bb11b2 1473 HOWTO (AARCH64_R (TLSLE_MOVW_TPREL_G0_NC), /* type */
a06ea964
NC		 1474 0, /* rightshift */
1475 2, /* size (0 = byte, 1 = short, 2 = long) */
07875fbc 1476 16, /* bitsize */
a06ea964
NC		 1477 FALSE, /* pc_relative */
1478 0, /* bitpos */
1479 complain_overflow_dont, /* complain_on_overflow */
1480 bfd_elf_generic_reloc, /* special_function */
a6bb11b2 1481 AARCH64_R_STR (TLSLE_MOVW_TPREL_G0_NC), /* name */
a06ea964
NC		 1482 FALSE, /* partial_inplace */
1483 0xffff, /* src_mask */
1484 0xffff, /* dst_mask */
1485 FALSE), /* pcrel_offset */
1486
a6bb11b2 1487 HOWTO (AARCH64_R (TLSLE_ADD_TPREL_HI12), /* type */
bb3f9ed8 1488 12, /* rightshift */
a06ea964
NC		 1489 2, /* size (0 = byte, 1 = short, 2 = long) */
1490 12, /* bitsize */
1491 FALSE, /* pc_relative */
1492 0, /* bitpos */
bab91cce 1493 complain_overflow_unsigned, /* complain_on_overflow */
a06ea964 1494 bfd_elf_generic_reloc, /* special_function */
a6bb11b2 1495 AARCH64_R_STR (TLSLE_ADD_TPREL_HI12), /* name */
a06ea964
NC		 1496 FALSE, /* partial_inplace */
1497 0xfff, /* src_mask */
1498 0xfff, /* dst_mask */
1499 FALSE), /* pcrel_offset */
1500
a6bb11b2 1501 HOWTO (AARCH64_R (TLSLE_ADD_TPREL_LO12), /* type */
a06ea964
NC		 1502 0, /* rightshift */
1503 2, /* size (0 = byte, 1 = short, 2 = long) */
1504 12, /* bitsize */
1505 FALSE, /* pc_relative */
1506 0, /* bitpos */
36e6c140 1507 complain_overflow_unsigned, /* complain_on_overflow */
a06ea964 1508 bfd_elf_generic_reloc, /* special_function */
a6bb11b2 1509 AARCH64_R_STR (TLSLE_ADD_TPREL_LO12), /* name */
a06ea964
NC		 1510 FALSE, /* partial_inplace */
1511 0xfff, /* src_mask */
1512 0xfff, /* dst_mask */
1513 FALSE), /* pcrel_offset */
1514
a6bb11b2 1515 HOWTO (AARCH64_R (TLSLE_ADD_TPREL_LO12_NC), /* type */
a06ea964
NC		 1516 0, /* rightshift */
1517 2, /* size (0 = byte, 1 = short, 2 = long) */
1518 12, /* bitsize */
1519 FALSE, /* pc_relative */
1520 0, /* bitpos */
1521 complain_overflow_dont, /* complain_on_overflow */
1522 bfd_elf_generic_reloc, /* special_function */
a6bb11b2 1523 AARCH64_R_STR (TLSLE_ADD_TPREL_LO12_NC), /* name */
a06ea964
NC		 1524 FALSE, /* partial_inplace */
1525 0xfff, /* src_mask */
1526 0xfff, /* dst_mask */
1527 FALSE), /* pcrel_offset */
a06ea964 1528
a6bb11b2 1529 HOWTO (AARCH64_R (TLSDESC_LD_PREL19), /* type */
bb3f9ed8 1530 2, /* rightshift */
a06ea964 1531 2, /* size (0 = byte, 1 = short, 2 = long) */
1ada945d 1532 19, /* bitsize */
a06ea964
NC		 1533 TRUE, /* pc_relative */
1534 0, /* bitpos */
1535 complain_overflow_dont, /* complain_on_overflow */
1536 bfd_elf_generic_reloc, /* special_function */
a6bb11b2 1537 AARCH64_R_STR (TLSDESC_LD_PREL19), /* name */
a06ea964 1538 FALSE, /* partial_inplace */
1ada945d
MS		 1539 0x0ffffe0, /* src_mask */
1540 0x0ffffe0, /* dst_mask */
a06ea964
NC		 1541 TRUE), /* pcrel_offset */
1542
a6bb11b2 1543 HOWTO (AARCH64_R (TLSDESC_ADR_PREL21), /* type */
a06ea964
NC		 1544 0, /* rightshift */
1545 2, /* size (0 = byte, 1 = short, 2 = long) */
1546 21, /* bitsize */
1547 TRUE, /* pc_relative */
1548 0, /* bitpos */
1549 complain_overflow_dont, /* complain_on_overflow */
1550 bfd_elf_generic_reloc, /* special_function */
a6bb11b2 1551 AARCH64_R_STR (TLSDESC_ADR_PREL21), /* name */
a06ea964
NC		 1552 FALSE, /* partial_inplace */
1553 0x1fffff, /* src_mask */
1554 0x1fffff, /* dst_mask */
1555 TRUE), /* pcrel_offset */
1556
1557 /* Get to the page for the GOT entry for the symbol
1558 (G(S) - P) using an ADRP instruction. */
a6bb11b2 1559 HOWTO (AARCH64_R (TLSDESC_ADR_PAGE21), /* type */
a06ea964
NC		 1560 12, /* rightshift */
1561 2, /* size (0 = byte, 1 = short, 2 = long) */
1562 21, /* bitsize */
1563 TRUE, /* pc_relative */
1564 0, /* bitpos */
1565 complain_overflow_dont, /* complain_on_overflow */
1566 bfd_elf_generic_reloc, /* special_function */
a6bb11b2 1567 AARCH64_R_STR (TLSDESC_ADR_PAGE21), /* name */
a06ea964
NC		 1568 FALSE, /* partial_inplace */
1569 0x1fffff, /* src_mask */
1570 0x1fffff, /* dst_mask */
1571 TRUE), /* pcrel_offset */
1572
a6bb11b2
YZ		 1573 /* LD64: GOT offset G(S) & 0xff8. */
1574 HOWTO64 (AARCH64_R (TLSDESC_LD64_LO12_NC), /* type */
a06ea964
NC		 1575 3, /* rightshift */
1576 2, /* size (0 = byte, 1 = short, 2 = long) */
1577 12, /* bitsize */
1578 FALSE, /* pc_relative */
1579 0, /* bitpos */
1580 complain_overflow_dont, /* complain_on_overflow */
1581 bfd_elf_generic_reloc, /* special_function */
a6bb11b2 1582 AARCH64_R_STR (TLSDESC_LD64_LO12_NC), /* name */
a06ea964 1583 FALSE, /* partial_inplace */
a6bb11b2
YZ		 1584 0xff8, /* src_mask */
1585 0xff8, /* dst_mask */
1586 FALSE), /* pcrel_offset */
1587
1588 /* LD32: GOT offset G(S) & 0xffc. */
1589 HOWTO32 (AARCH64_R (TLSDESC_LD32_LO12_NC), /* type */
1590 2, /* rightshift */
1591 2, /* size (0 = byte, 1 = short, 2 = long) */
1592 12, /* bitsize */
1593 FALSE, /* pc_relative */
1594 0, /* bitpos */
1595 complain_overflow_dont, /* complain_on_overflow */
1596 bfd_elf_generic_reloc, /* special_function */
1597 AARCH64_R_STR (TLSDESC_LD32_LO12_NC), /* name */
1598 FALSE, /* partial_inplace */
1599 0xffc, /* src_mask */
1600 0xffc, /* dst_mask */
a06ea964
NC		 1601 FALSE), /* pcrel_offset */
1602
1603 /* ADD: GOT offset G(S) & 0xfff. */
a6bb11b2 1604 HOWTO (AARCH64_R (TLSDESC_ADD_LO12_NC), /* type */
a06ea964
NC		 1605 0, /* rightshift */
1606 2, /* size (0 = byte, 1 = short, 2 = long) */
1607 12, /* bitsize */
1608 FALSE, /* pc_relative */
1609 0, /* bitpos */
1610 complain_overflow_dont, /* complain_on_overflow */
1611 bfd_elf_generic_reloc, /* special_function */
a6bb11b2 1612 AARCH64_R_STR (TLSDESC_ADD_LO12_NC), /* name */
a06ea964
NC		 1613 FALSE, /* partial_inplace */
1614 0xfff, /* src_mask */
1615 0xfff, /* dst_mask */
1616 FALSE), /* pcrel_offset */
1617
a6bb11b2 1618 HOWTO64 (AARCH64_R (TLSDESC_OFF_G1), /* type */
bb3f9ed8 1619 16, /* rightshift */
a06ea964
NC		 1620 2, /* size (0 = byte, 1 = short, 2 = long) */
1621 12, /* bitsize */
1622 FALSE, /* pc_relative */
1623 0, /* bitpos */
43a357f9 1624 complain_overflow_unsigned, /* complain_on_overflow */
a06ea964 1625 bfd_elf_generic_reloc, /* special_function */
a6bb11b2 1626 AARCH64_R_STR (TLSDESC_OFF_G1), /* name */
a06ea964
NC		 1627 FALSE, /* partial_inplace */
1628 0xffff, /* src_mask */
1629 0xffff, /* dst_mask */
1630 FALSE), /* pcrel_offset */
1631
a6bb11b2 1632 HOWTO64 (AARCH64_R (TLSDESC_OFF_G0_NC), /* type */
a06ea964
NC		 1633 0, /* rightshift */
1634 2, /* size (0 = byte, 1 = short, 2 = long) */
1635 12, /* bitsize */
1636 FALSE, /* pc_relative */
1637 0, /* bitpos */
1638 complain_overflow_dont, /* complain_on_overflow */
1639 bfd_elf_generic_reloc, /* special_function */
a6bb11b2 1640 AARCH64_R_STR (TLSDESC_OFF_G0_NC), /* name */
a06ea964
NC		 1641 FALSE, /* partial_inplace */
1642 0xffff, /* src_mask */
1643 0xffff, /* dst_mask */
1644 FALSE), /* pcrel_offset */
1645
a6bb11b2 1646 HOWTO64 (AARCH64_R (TLSDESC_LDR), /* type */
a06ea964
NC		 1647 0, /* rightshift */
1648 2, /* size (0 = byte, 1 = short, 2 = long) */
1649 12, /* bitsize */
1650 FALSE, /* pc_relative */
1651 0, /* bitpos */
1652 complain_overflow_dont, /* complain_on_overflow */
1653 bfd_elf_generic_reloc, /* special_function */
a6bb11b2 1654 AARCH64_R_STR (TLSDESC_LDR), /* name */
a06ea964
NC		 1655 FALSE, /* partial_inplace */
1656 0x0, /* src_mask */
1657 0x0, /* dst_mask */
1658 FALSE), /* pcrel_offset */
1659
a6bb11b2 1660 HOWTO64 (AARCH64_R (TLSDESC_ADD), /* type */
a06ea964
NC		 1661 0, /* rightshift */
1662 2, /* size (0 = byte, 1 = short, 2 = long) */
1663 12, /* bitsize */
1664 FALSE, /* pc_relative */
1665 0, /* bitpos */
1666 complain_overflow_dont, /* complain_on_overflow */
1667 bfd_elf_generic_reloc, /* special_function */
a6bb11b2 1668 AARCH64_R_STR (TLSDESC_ADD), /* name */
a06ea964
NC		 1669 FALSE, /* partial_inplace */
1670 0x0, /* src_mask */
1671 0x0, /* dst_mask */
1672 FALSE), /* pcrel_offset */
1673
a6bb11b2 1674 HOWTO (AARCH64_R (TLSDESC_CALL), /* type */
a06ea964
NC		 1675 0, /* rightshift */
1676 2, /* size (0 = byte, 1 = short, 2 = long) */
7366006f 1677 0, /* bitsize */
a06ea964
NC		 1678 FALSE, /* pc_relative */
1679 0, /* bitpos */
1680 complain_overflow_dont, /* complain_on_overflow */
1681 bfd_elf_generic_reloc, /* special_function */
a6bb11b2 1682 AARCH64_R_STR (TLSDESC_CALL), /* name */
a06ea964
NC		 1683 FALSE, /* partial_inplace */
1684 0x0, /* src_mask */
1685 0x0, /* dst_mask */
1686 FALSE), /* pcrel_offset */
a6bb11b2
YZ		 1687
1688 HOWTO (AARCH64_R (COPY), /* type */
1689 0, /* rightshift */
1690 2, /* size (0 = byte, 1 = short, 2 = long) */
1691 64, /* bitsize */
1692 FALSE, /* pc_relative */
1693 0, /* bitpos */
1694 complain_overflow_bitfield, /* complain_on_overflow */
1695 bfd_elf_generic_reloc, /* special_function */
1696 AARCH64_R_STR (COPY), /* name */
1697 TRUE, /* partial_inplace */
1698 0xffffffff, /* src_mask */
1699 0xffffffff, /* dst_mask */
1700 FALSE), /* pcrel_offset */
1701
1702 HOWTO (AARCH64_R (GLOB_DAT), /* type */
1703 0, /* rightshift */
1704 2, /* size (0 = byte, 1 = short, 2 = long) */
1705 64, /* bitsize */
1706 FALSE, /* pc_relative */
1707 0, /* bitpos */
1708 complain_overflow_bitfield, /* complain_on_overflow */
1709 bfd_elf_generic_reloc, /* special_function */
1710 AARCH64_R_STR (GLOB_DAT), /* name */
1711 TRUE, /* partial_inplace */
1712 0xffffffff, /* src_mask */
1713 0xffffffff, /* dst_mask */
1714 FALSE), /* pcrel_offset */
1715
1716 HOWTO (AARCH64_R (JUMP_SLOT), /* type */
1717 0, /* rightshift */
1718 2, /* size (0 = byte, 1 = short, 2 = long) */
1719 64, /* bitsize */
1720 FALSE, /* pc_relative */
1721 0, /* bitpos */
1722 complain_overflow_bitfield, /* complain_on_overflow */
1723 bfd_elf_generic_reloc, /* special_function */
1724 AARCH64_R_STR (JUMP_SLOT), /* name */
1725 TRUE, /* partial_inplace */
1726 0xffffffff, /* src_mask */
1727 0xffffffff, /* dst_mask */
1728 FALSE), /* pcrel_offset */
1729
1730 HOWTO (AARCH64_R (RELATIVE), /* type */
1731 0, /* rightshift */
1732 2, /* size (0 = byte, 1 = short, 2 = long) */
1733 64, /* bitsize */
1734 FALSE, /* pc_relative */
1735 0, /* bitpos */
1736 complain_overflow_bitfield, /* complain_on_overflow */
1737 bfd_elf_generic_reloc, /* special_function */
1738 AARCH64_R_STR (RELATIVE), /* name */
1739 TRUE, /* partial_inplace */
1740 ALL_ONES, /* src_mask */
1741 ALL_ONES, /* dst_mask */
1742 FALSE), /* pcrel_offset */
1743
1744 HOWTO (AARCH64_R (TLS_DTPMOD), /* type */
1745 0, /* rightshift */
1746 2, /* size (0 = byte, 1 = short, 2 = long) */
1747 64, /* bitsize */
1748 FALSE, /* pc_relative */
1749 0, /* bitpos */
1750 complain_overflow_dont, /* complain_on_overflow */
1751 bfd_elf_generic_reloc, /* special_function */
da0781dc
YZ		 1752#if ARCH_SIZE == 64
1753 AARCH64_R_STR (TLS_DTPMOD64), /* name */
1754#else
a6bb11b2 1755 AARCH64_R_STR (TLS_DTPMOD), /* name */
da0781dc 1756#endif
a6bb11b2
YZ		 1757 FALSE, /* partial_inplace */
1758 0, /* src_mask */
1759 ALL_ONES, /* dst_mask */
1760 FALSE), /* pc_reloffset */
1761
1762 HOWTO (AARCH64_R (TLS_DTPREL), /* type */
1763 0, /* rightshift */
1764 2, /* size (0 = byte, 1 = short, 2 = long) */
1765 64, /* bitsize */
1766 FALSE, /* pc_relative */
1767 0, /* bitpos */
1768 complain_overflow_dont, /* complain_on_overflow */
1769 bfd_elf_generic_reloc, /* special_function */
da0781dc
YZ		 1770#if ARCH_SIZE == 64
1771 AARCH64_R_STR (TLS_DTPREL64), /* name */
1772#else
a6bb11b2 1773 AARCH64_R_STR (TLS_DTPREL), /* name */
da0781dc 1774#endif
a6bb11b2
YZ		 1775 FALSE, /* partial_inplace */
1776 0, /* src_mask */
1777 ALL_ONES, /* dst_mask */
1778 FALSE), /* pcrel_offset */
1779
1780 HOWTO (AARCH64_R (TLS_TPREL), /* type */
1781 0, /* rightshift */
1782 2, /* size (0 = byte, 1 = short, 2 = long) */
1783 64, /* bitsize */
1784 FALSE, /* pc_relative */
1785 0, /* bitpos */
1786 complain_overflow_dont, /* complain_on_overflow */
1787 bfd_elf_generic_reloc, /* special_function */
da0781dc
YZ		 1788#if ARCH_SIZE == 64
1789 AARCH64_R_STR (TLS_TPREL64), /* name */
1790#else
a6bb11b2 1791 AARCH64_R_STR (TLS_TPREL), /* name */
da0781dc 1792#endif
a6bb11b2
YZ		 1793 FALSE, /* partial_inplace */
1794 0, /* src_mask */
1795 ALL_ONES, /* dst_mask */
1796 FALSE), /* pcrel_offset */
1797
1798 HOWTO (AARCH64_R (TLSDESC), /* type */
1799 0, /* rightshift */
1800 2, /* size (0 = byte, 1 = short, 2 = long) */
1801 64, /* bitsize */
1802 FALSE, /* pc_relative */
1803 0, /* bitpos */
1804 complain_overflow_dont, /* complain_on_overflow */
1805 bfd_elf_generic_reloc, /* special_function */
1806 AARCH64_R_STR (TLSDESC), /* name */
1807 FALSE, /* partial_inplace */
1808 0, /* src_mask */
1809 ALL_ONES, /* dst_mask */
1810 FALSE), /* pcrel_offset */
1811
1812 HOWTO (AARCH64_R (IRELATIVE), /* type */
1813 0, /* rightshift */
1814 2, /* size (0 = byte, 1 = short, 2 = long) */
1815 64, /* bitsize */
1816 FALSE, /* pc_relative */
1817 0, /* bitpos */
1818 complain_overflow_bitfield, /* complain_on_overflow */
1819 bfd_elf_generic_reloc, /* special_function */
1820 AARCH64_R_STR (IRELATIVE), /* name */
1821 FALSE, /* partial_inplace */
1822 0, /* src_mask */
1823 ALL_ONES, /* dst_mask */
1824 FALSE), /* pcrel_offset */
1825
1826 EMPTY_HOWTO (0),
a06ea964
NC		 1827};
1828
a6bb11b2
YZ		 1829static reloc_howto_type elfNN_aarch64_howto_none =
1830 HOWTO (R_AARCH64_NONE, /* type */
1831 0, /* rightshift */
6346d5ca 1832 3, /* size (0 = byte, 1 = short, 2 = long) */
a6bb11b2
YZ		 1833 0, /* bitsize */
1834 FALSE, /* pc_relative */
1835 0, /* bitpos */
1836 complain_overflow_dont,/* complain_on_overflow */
1837 bfd_elf_generic_reloc, /* special_function */
1838 "R_AARCH64_NONE", /* name */
1839 FALSE, /* partial_inplace */
1840 0, /* src_mask */
1841 0, /* dst_mask */
1842 FALSE); /* pcrel_offset */
1843
1844/* Given HOWTO, return the bfd internal relocation enumerator. */
1845
1846static bfd_reloc_code_real_type
1847elfNN_aarch64_bfd_reloc_from_howto (reloc_howto_type *howto)
1848{
1849 const int size
1850 = (int) ARRAY_SIZE (elfNN_aarch64_howto_table);
1851 const ptrdiff_t offset
1852 = howto - elfNN_aarch64_howto_table;
1853
1854 if (offset > 0 && offset < size - 1)
1855 return BFD_RELOC_AARCH64_RELOC_START + offset;
1856
1857 if (howto == &elfNN_aarch64_howto_none)
1858 return BFD_RELOC_AARCH64_NONE;
1859
1860 return BFD_RELOC_AARCH64_RELOC_START;
1861}
1862
1863/* Given R_TYPE, return the bfd internal relocation enumerator. */
1864
1865static bfd_reloc_code_real_type
1866elfNN_aarch64_bfd_reloc_from_type (unsigned int r_type)
1867{
1868 static bfd_boolean initialized_p = FALSE;
1869 /* Indexed by R_TYPE, values are offsets in the howto_table. */
1870 static unsigned int offsets[R_AARCH64_end];
1871
1872 if (initialized_p == FALSE)
1873 {
1874 unsigned int i;
1875
1876 for (i = 1; i < ARRAY_SIZE (elfNN_aarch64_howto_table) - 1; ++i)
1877 if (elfNN_aarch64_howto_table[i].type != 0)
1878 offsets[elfNN_aarch64_howto_table[i].type] = i;
1879
1880 initialized_p = TRUE;
1881 }
1882
1883 if (r_type == R_AARCH64_NONE || r_type == R_AARCH64_NULL)
1884 return BFD_RELOC_AARCH64_NONE;
1885
5860e3f8
NC		 1886 /* PR 17512: file: b371e70a. */
1887 if (r_type >= R_AARCH64_end)
1888 {
1889 _bfd_error_handler (_("Invalid AArch64 reloc number: %d"), r_type);
1890 bfd_set_error (bfd_error_bad_value);
1891 return BFD_RELOC_AARCH64_NONE;
1892 }
1893
a6bb11b2
YZ		 1894 return BFD_RELOC_AARCH64_RELOC_START + offsets[r_type];
1895}
1896
1897struct elf_aarch64_reloc_map
1898{
1899 bfd_reloc_code_real_type from;
1900 bfd_reloc_code_real_type to;
1901};
1902
1903/* Map bfd generic reloc to AArch64-specific reloc. */
1904static const struct elf_aarch64_reloc_map elf_aarch64_reloc_map[] =
1905{
1906 {BFD_RELOC_NONE, BFD_RELOC_AARCH64_NONE},
1907
1908 /* Basic data relocations. */
1909 {BFD_RELOC_CTOR, BFD_RELOC_AARCH64_NN},
1910 {BFD_RELOC_64, BFD_RELOC_AARCH64_64},
1911 {BFD_RELOC_32, BFD_RELOC_AARCH64_32},
1912 {BFD_RELOC_16, BFD_RELOC_AARCH64_16},
1913 {BFD_RELOC_64_PCREL, BFD_RELOC_AARCH64_64_PCREL},
1914 {BFD_RELOC_32_PCREL, BFD_RELOC_AARCH64_32_PCREL},
1915 {BFD_RELOC_16_PCREL, BFD_RELOC_AARCH64_16_PCREL},
1916};
1917
1918/* Given the bfd internal relocation enumerator in CODE, return the
1919 corresponding howto entry. */
1920
1921static reloc_howto_type *
1922elfNN_aarch64_howto_from_bfd_reloc (bfd_reloc_code_real_type code)
1923{
1924 unsigned int i;
1925
1926 /* Convert bfd generic reloc to AArch64-specific reloc. */
1927 if (code < BFD_RELOC_AARCH64_RELOC_START
1928 || code > BFD_RELOC_AARCH64_RELOC_END)
1929 for (i = 0; i < ARRAY_SIZE (elf_aarch64_reloc_map); i++)
1930 if (elf_aarch64_reloc_map[i].from == code)
1931 {
1932 code = elf_aarch64_reloc_map[i].to;
1933 break;
1934 }
1935
1936 if (code > BFD_RELOC_AARCH64_RELOC_START
1937 && code < BFD_RELOC_AARCH64_RELOC_END)
1938 if (elfNN_aarch64_howto_table[code - BFD_RELOC_AARCH64_RELOC_START].type)
1939 return &elfNN_aarch64_howto_table[code - BFD_RELOC_AARCH64_RELOC_START];
1940
54757ed1
AP		 1941 if (code == BFD_RELOC_AARCH64_NONE)
1942 return &elfNN_aarch64_howto_none;
1943
a6bb11b2
YZ		 1944 return NULL;
1945}
1946
a06ea964 1947static reloc_howto_type *
cec5225b 1948elfNN_aarch64_howto_from_type (unsigned int r_type)
a06ea964 1949{
a6bb11b2
YZ		 1950 bfd_reloc_code_real_type val;
1951 reloc_howto_type *howto;
1952
cec5225b
YZ		 1953#if ARCH_SIZE == 32
1954 if (r_type > 256)
1955 {
1956 bfd_set_error (bfd_error_bad_value);
1957 return NULL;
1958 }
1959#endif
1960
a6bb11b2
YZ		 1961 if (r_type == R_AARCH64_NONE)
1962 return &elfNN_aarch64_howto_none;
a06ea964 1963
a6bb11b2
YZ		 1964 val = elfNN_aarch64_bfd_reloc_from_type (r_type);
1965 howto = elfNN_aarch64_howto_from_bfd_reloc (val);
a06ea964 1966
a6bb11b2
YZ		 1967 if (howto != NULL)
1968 return howto;
a06ea964 1969
a06ea964
NC		 1970 bfd_set_error (bfd_error_bad_value);
1971 return NULL;
1972}
1973
1974static void
cec5225b 1975elfNN_aarch64_info_to_howto (bfd *abfd ATTRIBUTE_UNUSED, arelent *bfd_reloc,
a06ea964
NC		 1976 Elf_Internal_Rela *elf_reloc)
1977{
1978 unsigned int r_type;
1979
cec5225b
YZ		 1980 r_type = ELFNN_R_TYPE (elf_reloc->r_info);
1981 bfd_reloc->howto = elfNN_aarch64_howto_from_type (r_type);
a06ea964
NC		 1982}
1983
a06ea964 1984static reloc_howto_type *
cec5225b 1985elfNN_aarch64_reloc_type_lookup (bfd *abfd ATTRIBUTE_UNUSED,
a06ea964
NC		 1986 bfd_reloc_code_real_type code)
1987{
a6bb11b2 1988 reloc_howto_type *howto = elfNN_aarch64_howto_from_bfd_reloc (code);
a06ea964 1989
a6bb11b2
YZ		 1990 if (howto != NULL)
1991 return howto;
a06ea964
NC		 1992
1993 bfd_set_error (bfd_error_bad_value);
1994 return NULL;
1995}
1996
1997static reloc_howto_type *
cec5225b 1998elfNN_aarch64_reloc_name_lookup (bfd *abfd ATTRIBUTE_UNUSED,
a06ea964
NC		 1999 const char *r_name)
2000{
2001 unsigned int i;
2002
a6bb11b2
YZ		 2003 for (i = 1; i < ARRAY_SIZE (elfNN_aarch64_howto_table) - 1; ++i)
2004 if (elfNN_aarch64_howto_table[i].name != NULL
2005 && strcasecmp (elfNN_aarch64_howto_table[i].name, r_name) == 0)
2006 return &elfNN_aarch64_howto_table[i];
a06ea964
NC		 2007
2008 return NULL;
2009}
2010
6d00b590 2011#define TARGET_LITTLE_SYM aarch64_elfNN_le_vec
cec5225b 2012#define TARGET_LITTLE_NAME "elfNN-littleaarch64"
6d00b590 2013#define TARGET_BIG_SYM aarch64_elfNN_be_vec
cec5225b 2014#define TARGET_BIG_NAME "elfNN-bigaarch64"
a06ea964 2015
a06ea964
NC		 2016/* The linker script knows the section names for placement.
2017 The entry_names are used to do simple name mangling on the stubs.
2018 Given a function name, and its type, the stub can be found. The
2019 name can be changed. The only requirement is the %s be present. */
2020#define STUB_ENTRY_NAME "__%s_veneer"
2021
2022/* The name of the dynamic interpreter. This is put in the .interp
2023 section. */
2024#define ELF_DYNAMIC_INTERPRETER "/lib/ld.so.1"
2025
2026#define AARCH64_MAX_FWD_BRANCH_OFFSET \
2027 (((1 << 25) - 1) << 2)
2028#define AARCH64_MAX_BWD_BRANCH_OFFSET \
2029 (-((1 << 25) << 2))
2030
2031#define AARCH64_MAX_ADRP_IMM ((1 << 20) - 1)
2032#define AARCH64_MIN_ADRP_IMM (-(1 << 20))
2033
2034static int
2035aarch64_valid_for_adrp_p (bfd_vma value, bfd_vma place)
2036{
2037 bfd_signed_vma offset = (bfd_signed_vma) (PG (value) - PG (place)) >> 12;
2038 return offset <= AARCH64_MAX_ADRP_IMM && offset >= AARCH64_MIN_ADRP_IMM;
2039}
2040
2041static int
2042aarch64_valid_branch_p (bfd_vma value, bfd_vma place)
2043{
2044 bfd_signed_vma offset = (bfd_signed_vma) (value - place);
2045 return (offset <= AARCH64_MAX_FWD_BRANCH_OFFSET
2046 && offset >= AARCH64_MAX_BWD_BRANCH_OFFSET);
2047}
2048
2049static const uint32_t aarch64_adrp_branch_stub [] =
2050{
2051 0x90000010, /* adrp ip0, X */
2052 /* R_AARCH64_ADR_HI21_PCREL(X) */
2053 0x91000210, /* add ip0, ip0, :lo12:X */
2054 /* R_AARCH64_ADD_ABS_LO12_NC(X) */
2055 0xd61f0200, /* br ip0 */
2056};
2057
2058static const uint32_t aarch64_long_branch_stub[] =
2059{
cec5225b 2060#if ARCH_SIZE == 64
a06ea964 2061 0x58000090, /* ldr ip0, 1f */
cec5225b
YZ		 2062#else
2063 0x18000090, /* ldr wip0, 1f */
2064#endif
a06ea964
NC		 2065 0x10000011, /* adr ip1, #0 */
2066 0x8b110210, /* add ip0, ip0, ip1 */
2067 0xd61f0200, /* br ip0 */
cec5225b
YZ		 2068 0x00000000, /* 1: .xword or .word
2069 R_AARCH64_PRELNN(X) + 12
a06ea964
NC		 2070 */
2071 0x00000000,
2072};
2073
68fcca92
JW		 2074static const uint32_t aarch64_erratum_835769_stub[] =
2075{
2076 0x00000000, /* Placeholder for multiply accumulate. */
2077 0x14000000, /* b <label> */
2078};
2079
4106101c
MS		 2080static const uint32_t aarch64_erratum_843419_stub[] =
2081{
2082 0x00000000, /* Placeholder for LDR instruction. */
2083 0x14000000, /* b <label> */
2084};
2085
a06ea964
NC		 2086/* Section name for stubs is the associated section name plus this
2087 string. */
2088#define STUB_SUFFIX ".stub"
2089
cec5225b 2090enum elf_aarch64_stub_type
a06ea964
NC		 2091{
2092 aarch64_stub_none,
2093 aarch64_stub_adrp_branch,
2094 aarch64_stub_long_branch,
68fcca92 2095 aarch64_stub_erratum_835769_veneer,
4106101c 2096 aarch64_stub_erratum_843419_veneer,
a06ea964
NC		 2097};
2098
cec5225b 2099struct elf_aarch64_stub_hash_entry
a06ea964
NC		 2100{
2101 /* Base hash table entry structure. */
2102 struct bfd_hash_entry root;
2103
2104 /* The stub section. */
2105 asection *stub_sec;
2106
2107 /* Offset within stub_sec of the beginning of this stub. */
2108 bfd_vma stub_offset;
2109
2110 /* Given the symbol's value and its section we can determine its final
2111 value when building the stubs (so the stub knows where to jump). */
2112 bfd_vma target_value;
2113 asection *target_section;
2114
cec5225b 2115 enum elf_aarch64_stub_type stub_type;
a06ea964
NC		 2116
2117 /* The symbol table entry, if any, that this was derived from. */
cec5225b 2118 struct elf_aarch64_link_hash_entry *h;
a06ea964
NC		 2119
2120 /* Destination symbol type */
2121 unsigned char st_type;
2122
2123 /* Where this stub is being called from, or, in the case of combined
2124 stub sections, the first input section in the group. */
2125 asection *id_sec;
2126
2127 /* The name for the local symbol at the start of this stub. The
2128 stub name in the hash table has to be unique; this does not, so
2129 it can be friendlier. */
2130 char *output_name;
68fcca92
JW		 2131
2132 /* The instruction which caused this stub to be generated (only valid for
2133 erratum 835769 workaround stubs at present). */
2134 uint32_t veneered_insn;
4106101c
MS		 2135
2136 /* In an erratum 843419 workaround stub, the ADRP instruction offset. */
2137 bfd_vma adrp_offset;
a06ea964
NC		 2138};
2139
2140/* Used to build a map of a section. This is required for mixed-endian
2141 code/data. */
2142
cec5225b 2143typedef struct elf_elf_section_map
a06ea964
NC		 2144{
2145 bfd_vma vma;
2146 char type;
2147}
cec5225b 2148elf_aarch64_section_map;
a06ea964
NC		 2149
2150
2151typedef struct _aarch64_elf_section_data
2152{
2153 struct bfd_elf_section_data elf;
2154 unsigned int mapcount;
2155 unsigned int mapsize;
cec5225b 2156 elf_aarch64_section_map *map;
a06ea964
NC		 2157}
2158_aarch64_elf_section_data;
2159
cec5225b 2160#define elf_aarch64_section_data(sec) \
a06ea964
NC		 2161 ((_aarch64_elf_section_data *) elf_section_data (sec))
2162
4e8516b2
AP		 2163/* The size of the thread control block which is defined to be two pointers. */
2164#define TCB_SIZE (ARCH_SIZE/8)*2
a06ea964
NC		 2165
2166struct elf_aarch64_local_symbol
2167{
2168 unsigned int got_type;
2169 bfd_signed_vma got_refcount;
2170 bfd_vma got_offset;
2171
2172 /* Offset of the GOTPLT entry reserved for the TLS descriptor. The
2173 offset is from the end of the jump table and reserved entries
2174 within the PLTGOT.
2175
2176 The magic value (bfd_vma) -1 indicates that an offset has not be
2177 allocated. */
2178 bfd_vma tlsdesc_got_jump_table_offset;
2179};
2180
2181struct elf_aarch64_obj_tdata
2182{
2183 struct elf_obj_tdata root;
2184
2185 /* local symbol descriptors */
2186 struct elf_aarch64_local_symbol *locals;
2187
2188 /* Zero to warn when linking objects with incompatible enum sizes. */
2189 int no_enum_size_warning;
2190
2191 /* Zero to warn when linking objects with incompatible wchar_t sizes. */
2192 int no_wchar_size_warning;
2193};
2194
2195#define elf_aarch64_tdata(bfd) \
2196 ((struct elf_aarch64_obj_tdata *) (bfd)->tdata.any)
2197
cec5225b 2198#define elf_aarch64_locals(bfd) (elf_aarch64_tdata (bfd)->locals)
a06ea964
NC		 2199
2200#define is_aarch64_elf(bfd) \
2201 (bfd_get_flavour (bfd) == bfd_target_elf_flavour \
2202 && elf_tdata (bfd) != NULL \
2203 && elf_object_id (bfd) == AARCH64_ELF_DATA)
2204
2205static bfd_boolean
cec5225b 2206elfNN_aarch64_mkobject (bfd *abfd)
a06ea964
NC		 2207{
2208 return bfd_elf_allocate_object (abfd, sizeof (struct elf_aarch64_obj_tdata),
2209 AARCH64_ELF_DATA);
2210}
2211
cec5225b
YZ		 2212#define elf_aarch64_hash_entry(ent) \
2213 ((struct elf_aarch64_link_hash_entry *)(ent))
a06ea964
NC		 2214
2215#define GOT_UNKNOWN 0
2216#define GOT_NORMAL 1
2217#define GOT_TLS_GD 2
2218#define GOT_TLS_IE 4
2219#define GOT_TLSDESC_GD 8
2220
2221#define GOT_TLS_GD_ANY_P(type) ((type & GOT_TLS_GD) || (type & GOT_TLSDESC_GD))
2222
2223/* AArch64 ELF linker hash entry. */
cec5225b 2224struct elf_aarch64_link_hash_entry
a06ea964
NC		 2225{
2226 struct elf_link_hash_entry root;
2227
2228 /* Track dynamic relocs copied for this symbol. */
2229 struct elf_dyn_relocs *dyn_relocs;
2230
a06ea964
NC		 2231 /* Since PLT entries have variable size, we need to record the
2232 index into .got.plt instead of recomputing it from the PLT
2233 offset. */
2234 bfd_signed_vma plt_got_offset;
2235
2236 /* Bit mask representing the type of GOT entry(s) if any required by
2237 this symbol. */
2238 unsigned int got_type;
2239
2240 /* A pointer to the most recently used stub hash entry against this
2241 symbol. */
cec5225b 2242 struct elf_aarch64_stub_hash_entry *stub_cache;
a06ea964
NC		 2243
2244 /* Offset of the GOTPLT entry reserved for the TLS descriptor. The offset
2245 is from the end of the jump table and reserved entries within the PLTGOT.
2246
2247 The magic value (bfd_vma) -1 indicates that an offset has not
2248 be allocated. */
2249 bfd_vma tlsdesc_got_jump_table_offset;
2250};
2251
2252static unsigned int
cec5225b 2253elfNN_aarch64_symbol_got_type (struct elf_link_hash_entry *h,
a06ea964
NC		 2254 bfd *abfd,
2255 unsigned long r_symndx)
2256{
2257 if (h)
cec5225b 2258 return elf_aarch64_hash_entry (h)->got_type;
a06ea964 2259
cec5225b 2260 if (! elf_aarch64_locals (abfd))
a06ea964
NC		 2261 return GOT_UNKNOWN;
2262
cec5225b 2263 return elf_aarch64_locals (abfd)[r_symndx].got_type;
a06ea964
NC		 2264}
2265
a06ea964 2266/* Get the AArch64 elf linker hash table from a link_info structure. */
cec5225b
YZ		 2267#define elf_aarch64_hash_table(info) \
2268 ((struct elf_aarch64_link_hash_table *) ((info)->hash))
a06ea964
NC		 2269
2270#define aarch64_stub_hash_lookup(table, string, create, copy) \
cec5225b 2271 ((struct elf_aarch64_stub_hash_entry *) \
a06ea964
NC		 2272 bfd_hash_lookup ((table), (string), (create), (copy)))
2273
2274/* AArch64 ELF linker hash table. */
cec5225b 2275struct elf_aarch64_link_hash_table
a06ea964
NC		 2276{
2277 /* The main hash table. */
2278 struct elf_link_hash_table root;
2279
2280 /* Nonzero to force PIC branch veneers. */
2281 int pic_veneer;
2282
68fcca92
JW		 2283 /* Fix erratum 835769. */
2284 int fix_erratum_835769;
2285
4106101c
MS		 2286 /* Fix erratum 843419. */
2287 int fix_erratum_843419;
2288
2289 /* Enable ADRP->ADR rewrite for erratum 843419 workaround. */
2290 int fix_erratum_843419_adr;
2291
a06ea964
NC		 2292 /* The number of bytes in the initial entry in the PLT. */
2293 bfd_size_type plt_header_size;
2294
2295 /* The number of bytes in the subsequent PLT etries. */
2296 bfd_size_type plt_entry_size;
2297
2298 /* Short-cuts to get to dynamic linker sections. */
2299 asection *sdynbss;
2300 asection *srelbss;
2301
2302 /* Small local sym cache. */
2303 struct sym_cache sym_cache;
2304
2305 /* For convenience in allocate_dynrelocs. */
2306 bfd *obfd;
2307
2308 /* The amount of space used by the reserved portion of the sgotplt
2309 section, plus whatever space is used by the jump slots. */
2310 bfd_vma sgotplt_jump_table_size;
2311
2312 /* The stub hash table. */
2313 struct bfd_hash_table stub_hash_table;
2314
2315 /* Linker stub bfd. */
2316 bfd *stub_bfd;
2317
2318 /* Linker call-backs. */
2319 asection *(*add_stub_section) (const char *, asection *);
2320 void (*layout_sections_again) (void);
2321
2322 /* Array to keep track of which stub sections have been created, and
2323 information on stub grouping. */
2324 struct map_stub
2325 {
2326 /* This is the section to which stubs in the group will be
2327 attached. */
2328 asection *link_sec;
2329 /* The stub section. */
2330 asection *stub_sec;
2331 } *stub_group;
2332
cec5225b 2333 /* Assorted information used by elfNN_aarch64_size_stubs. */
a06ea964 2334 unsigned int bfd_count;
7292b3ac 2335 unsigned int top_index;
a06ea964
NC		 2336 asection **input_list;
2337
2338 /* The offset into splt of the PLT entry for the TLS descriptor
2339 resolver. Special values are 0, if not necessary (or not found
2340 to be necessary yet), and -1 if needed but not determined
2341 yet. */
2342 bfd_vma tlsdesc_plt;
2343
2344 /* The GOT offset for the lazy trampoline. Communicated to the
2345 loader via DT_TLSDESC_GOT. The magic value (bfd_vma) -1
2346 indicates an offset is not allocated. */
2347 bfd_vma dt_tlsdesc_got;
1419bbe5
WN		 2348
2349 /* Used by local STT_GNU_IFUNC symbols. */
2350 htab_t loc_hash_table;
2351 void * loc_hash_memory;
a06ea964
NC		 2352};
2353
a06ea964
NC		 2354/* Create an entry in an AArch64 ELF linker hash table. */
2355
2356static struct bfd_hash_entry *
cec5225b 2357elfNN_aarch64_link_hash_newfunc (struct bfd_hash_entry *entry,
a06ea964
NC		 2358 struct bfd_hash_table *table,
2359 const char *string)
2360{
cec5225b
YZ		 2361 struct elf_aarch64_link_hash_entry *ret =
2362 (struct elf_aarch64_link_hash_entry *) entry;
a06ea964
NC		 2363
2364 /* Allocate the structure if it has not already been allocated by a
2365 subclass. */
2366 if (ret == NULL)
2367 ret = bfd_hash_allocate (table,
cec5225b 2368 sizeof (struct elf_aarch64_link_hash_entry));
a06ea964
NC		 2369 if (ret == NULL)
2370 return (struct bfd_hash_entry *) ret;
2371
2372 /* Call the allocation method of the superclass. */
cec5225b 2373 ret = ((struct elf_aarch64_link_hash_entry *)
a06ea964
NC		 2374 _bfd_elf_link_hash_newfunc ((struct bfd_hash_entry *) ret,
2375 table, string));
2376 if (ret != NULL)
2377 {
2378 ret->dyn_relocs = NULL;
a06ea964
NC		 2379 ret->got_type = GOT_UNKNOWN;
2380 ret->plt_got_offset = (bfd_vma) - 1;
2381 ret->stub_cache = NULL;
2382 ret->tlsdesc_got_jump_table_offset = (bfd_vma) - 1;
2383 }
2384
2385 return (struct bfd_hash_entry *) ret;
2386}
2387
2388/* Initialize an entry in the stub hash table. */
2389
2390static struct bfd_hash_entry *
2391stub_hash_newfunc (struct bfd_hash_entry *entry,
2392 struct bfd_hash_table *table, const char *string)
2393{
2394 /* Allocate the structure if it has not already been allocated by a
2395 subclass. */
2396 if (entry == NULL)
2397 {
2398 entry = bfd_hash_allocate (table,
2399 sizeof (struct
cec5225b 2400 elf_aarch64_stub_hash_entry));
a06ea964
NC		 2401 if (entry == NULL)
2402 return entry;
2403 }
2404
2405 /* Call the allocation method of the superclass. */
2406 entry = bfd_hash_newfunc (entry, table, string);
2407 if (entry != NULL)
2408 {
cec5225b 2409 struct elf_aarch64_stub_hash_entry *eh;
a06ea964
NC		 2410
2411 /* Initialize the local fields. */
cec5225b 2412 eh = (struct elf_aarch64_stub_hash_entry *) entry;
4106101c 2413 eh->adrp_offset = 0;
a06ea964
NC		 2414 eh->stub_sec = NULL;
2415 eh->stub_offset = 0;
2416 eh->target_value = 0;
2417 eh->target_section = NULL;
2418 eh->stub_type = aarch64_stub_none;
2419 eh->h = NULL;
2420 eh->id_sec = NULL;
2421 }
2422
2423 return entry;
2424}
2425
1419bbe5
WN		 2426/* Compute a hash of a local hash entry. We use elf_link_hash_entry
2427 for local symbol so that we can handle local STT_GNU_IFUNC symbols
2428 as global symbol. We reuse indx and dynstr_index for local symbol
2429 hash since they aren't used by global symbols in this backend. */
2430
2431static hashval_t
2432elfNN_aarch64_local_htab_hash (const void *ptr)
2433{
2434 struct elf_link_hash_entry *h
2435 = (struct elf_link_hash_entry *) ptr;
2436 return ELF_LOCAL_SYMBOL_HASH (h->indx, h->dynstr_index);
2437}
2438
2439/* Compare local hash entries. */
2440
2441static int
2442elfNN_aarch64_local_htab_eq (const void *ptr1, const void *ptr2)
2443{
2444 struct elf_link_hash_entry *h1
2445 = (struct elf_link_hash_entry *) ptr1;
2446 struct elf_link_hash_entry *h2
2447 = (struct elf_link_hash_entry *) ptr2;
2448
2449 return h1->indx == h2->indx && h1->dynstr_index == h2->dynstr_index;
2450}
2451
2452/* Find and/or create a hash entry for local symbol. */
2453
2454static struct elf_link_hash_entry *
2455elfNN_aarch64_get_local_sym_hash (struct elf_aarch64_link_hash_table *htab,
2456 bfd *abfd, const Elf_Internal_Rela *rel,
2457 bfd_boolean create)
2458{
2459 struct elf_aarch64_link_hash_entry e, *ret;
2460 asection *sec = abfd->sections;
2461 hashval_t h = ELF_LOCAL_SYMBOL_HASH (sec->id,
2462 ELFNN_R_SYM (rel->r_info));
2463 void **slot;
2464
2465 e.root.indx = sec->id;
2466 e.root.dynstr_index = ELFNN_R_SYM (rel->r_info);
2467 slot = htab_find_slot_with_hash (htab->loc_hash_table, &e, h,
2468 create ? INSERT : NO_INSERT);
2469
2470 if (!slot)
2471 return NULL;
2472
2473 if (*slot)
2474 {
2475 ret = (struct elf_aarch64_link_hash_entry *) *slot;
2476 return &ret->root;
2477 }
2478
2479 ret = (struct elf_aarch64_link_hash_entry *)
2480 objalloc_alloc ((struct objalloc *) htab->loc_hash_memory,
2481 sizeof (struct elf_aarch64_link_hash_entry));
2482 if (ret)
2483 {
2484 memset (ret, 0, sizeof (*ret));
2485 ret->root.indx = sec->id;
2486 ret->root.dynstr_index = ELFNN_R_SYM (rel->r_info);
2487 ret->root.dynindx = -1;
2488 *slot = ret;
2489 }
2490 return &ret->root;
2491}
a06ea964
NC		 2492
2493/* Copy the extra info we tack onto an elf_link_hash_entry. */
2494
2495static void
cec5225b 2496elfNN_aarch64_copy_indirect_symbol (struct bfd_link_info *info,
a06ea964
NC		 2497 struct elf_link_hash_entry *dir,
2498 struct elf_link_hash_entry *ind)
2499{
cec5225b 2500 struct elf_aarch64_link_hash_entry *edir, *eind;
a06ea964 2501
cec5225b
YZ		 2502 edir = (struct elf_aarch64_link_hash_entry *) dir;
2503 eind = (struct elf_aarch64_link_hash_entry *) ind;
a06ea964
NC		 2504
2505 if (eind->dyn_relocs != NULL)
2506 {
2507 if (edir->dyn_relocs != NULL)
2508 {
2509 struct elf_dyn_relocs **pp;
2510 struct elf_dyn_relocs *p;
2511
2512 /* Add reloc counts against the indirect sym to the direct sym
2513 list. Merge any entries against the same section. */
2514 for (pp = &eind->dyn_relocs; (p = *pp) != NULL;)
2515 {
2516 struct elf_dyn_relocs *q;
2517
2518 for (q = edir->dyn_relocs; q != NULL; q = q->next)
2519 if (q->sec == p->sec)
2520 {
2521 q->pc_count += p->pc_count;
2522 q->count += p->count;
2523 *pp = p->next;
2524 break;
2525 }
2526 if (q == NULL)
2527 pp = &p->next;
2528 }
2529 *pp = edir->dyn_relocs;
2530 }
2531
2532 edir->dyn_relocs = eind->dyn_relocs;
2533 eind->dyn_relocs = NULL;
2534 }
2535
a06ea964
NC		 2536 if (ind->root.type == bfd_link_hash_indirect)
2537 {
2538 /* Copy over PLT info. */
2539 if (dir->got.refcount <= 0)
2540 {
2541 edir->got_type = eind->got_type;
2542 eind->got_type = GOT_UNKNOWN;
2543 }
2544 }
2545
2546 _bfd_elf_link_hash_copy_indirect (info, dir, ind);
2547}
2548
68faa637
AM		 2549/* Destroy an AArch64 elf linker hash table. */
2550
2551static void
d495ab0d 2552elfNN_aarch64_link_hash_table_free (bfd *obfd)
68faa637
AM		 2553{
2554 struct elf_aarch64_link_hash_table *ret
d495ab0d 2555 = (struct elf_aarch64_link_hash_table *) obfd->link.hash;
68faa637
AM		 2556
2557 if (ret->loc_hash_table)
2558 htab_delete (ret->loc_hash_table);
2559 if (ret->loc_hash_memory)
2560 objalloc_free ((struct objalloc *) ret->loc_hash_memory);
2561
2562 bfd_hash_table_free (&ret->stub_hash_table);
d495ab0d 2563 _bfd_elf_link_hash_table_free (obfd);
68faa637
AM		 2564}
2565
a06ea964
NC		 2566/* Create an AArch64 elf linker hash table. */
2567
2568static struct bfd_link_hash_table *
cec5225b 2569elfNN_aarch64_link_hash_table_create (bfd *abfd)
a06ea964 2570{
cec5225b
YZ		 2571 struct elf_aarch64_link_hash_table *ret;
2572 bfd_size_type amt = sizeof (struct elf_aarch64_link_hash_table);
a06ea964 2573
7bf52ea2 2574 ret = bfd_zmalloc (amt);
a06ea964
NC		 2575 if (ret == NULL)
2576 return NULL;
2577
2578 if (!_bfd_elf_link_hash_table_init
cec5225b
YZ		 2579 (&ret->root, abfd, elfNN_aarch64_link_hash_newfunc,
2580 sizeof (struct elf_aarch64_link_hash_entry), AARCH64_ELF_DATA))
a06ea964
NC		 2581 {
2582 free (ret);
2583 return NULL;
2584 }
2585
a06ea964
NC		 2586 ret->plt_header_size = PLT_ENTRY_SIZE;
2587 ret->plt_entry_size = PLT_SMALL_ENTRY_SIZE;
a06ea964 2588 ret->obfd = abfd;
a06ea964
NC		 2589 ret->dt_tlsdesc_got = (bfd_vma) - 1;
2590
2591 if (!bfd_hash_table_init (&ret->stub_hash_table, stub_hash_newfunc,
cec5225b 2592 sizeof (struct elf_aarch64_stub_hash_entry)))
a06ea964 2593 {
d495ab0d 2594 _bfd_elf_link_hash_table_free (abfd);
a06ea964
NC		 2595 return NULL;
2596 }
2597
1419bbe5
WN		 2598 ret->loc_hash_table = htab_try_create (1024,
2599 elfNN_aarch64_local_htab_hash,
2600 elfNN_aarch64_local_htab_eq,
2601 NULL);
2602 ret->loc_hash_memory = objalloc_create ();
2603 if (!ret->loc_hash_table || !ret->loc_hash_memory)
2604 {
d495ab0d 2605 elfNN_aarch64_link_hash_table_free (abfd);
1419bbe5
WN		 2606 return NULL;
2607 }
d495ab0d 2608 ret->root.root.hash_table_free = elfNN_aarch64_link_hash_table_free;
1419bbe5 2609
a06ea964
NC		 2610 return &ret->root.root;
2611}
2612
a06ea964
NC		 2613static bfd_boolean
2614aarch64_relocate (unsigned int r_type, bfd *input_bfd, asection *input_section,
2615 bfd_vma offset, bfd_vma value)
2616{
2617 reloc_howto_type *howto;
2618 bfd_vma place;
2619
cec5225b 2620 howto = elfNN_aarch64_howto_from_type (r_type);
a06ea964
NC		 2621 place = (input_section->output_section->vma + input_section->output_offset
2622 + offset);
caed7120
YZ		 2623
2624 r_type = elfNN_aarch64_bfd_reloc_from_type (r_type);
2625 value = _bfd_aarch64_elf_resolve_relocation (r_type, place, value, 0, FALSE);
2626 return _bfd_aarch64_elf_put_addend (input_bfd,
2627 input_section->contents + offset, r_type,
2628 howto, value);
a06ea964
NC		 2629}
2630
cec5225b 2631static enum elf_aarch64_stub_type
a06ea964
NC		 2632aarch64_select_branch_stub (bfd_vma value, bfd_vma place)
2633{
2634 if (aarch64_valid_for_adrp_p (value, place))
2635 return aarch64_stub_adrp_branch;
2636 return aarch64_stub_long_branch;
2637}
2638
2639/* Determine the type of stub needed, if any, for a call. */
2640
cec5225b 2641static enum elf_aarch64_stub_type
9a228467 2642aarch64_type_of_stub (asection *input_sec,
a06ea964 2643 const Elf_Internal_Rela *rel,
f678ded7 2644 asection *sym_sec,
a06ea964 2645 unsigned char st_type,
a06ea964
NC		 2646 bfd_vma destination)
2647{
2648 bfd_vma location;
2649 bfd_signed_vma branch_offset;
2650 unsigned int r_type;
cec5225b 2651 enum elf_aarch64_stub_type stub_type = aarch64_stub_none;
a06ea964 2652
f678ded7 2653 if (st_type != STT_FUNC
2f340668 2654 && (sym_sec == input_sec))
a06ea964
NC		 2655 return stub_type;
2656
a06ea964
NC		 2657 /* Determine where the call point is. */
2658 location = (input_sec->output_offset
2659 + input_sec->output_section->vma + rel->r_offset);
2660
2661 branch_offset = (bfd_signed_vma) (destination - location);
2662
cec5225b 2663 r_type = ELFNN_R_TYPE (rel->r_info);
a06ea964
NC		 2664
2665 /* We don't want to redirect any old unconditional jump in this way,
2666 only one which is being used for a sibcall, where it is
2667 acceptable for the IP0 and IP1 registers to be clobbered. */
a6bb11b2 2668 if ((r_type == AARCH64_R (CALL26) || r_type == AARCH64_R (JUMP26))
a06ea964
NC		 2669 && (branch_offset > AARCH64_MAX_FWD_BRANCH_OFFSET
2670 || branch_offset < AARCH64_MAX_BWD_BRANCH_OFFSET))
2671 {
2672 stub_type = aarch64_stub_long_branch;
2673 }
2674
2675 return stub_type;
2676}
2677
2678/* Build a name for an entry in the stub hash table. */
2679
2680static char *
cec5225b 2681elfNN_aarch64_stub_name (const asection *input_section,
a06ea964 2682 const asection *sym_sec,
cec5225b 2683 const struct elf_aarch64_link_hash_entry *hash,
a06ea964
NC		 2684 const Elf_Internal_Rela *rel)
2685{
2686 char *stub_name;
2687 bfd_size_type len;
2688
2689 if (hash)
2690 {
2691 len = 8 + 1 + strlen (hash->root.root.root.string) + 1 + 16 + 1;
2692 stub_name = bfd_malloc (len);
2693 if (stub_name != NULL)
2694 snprintf (stub_name, len, "%08x_%s+%" BFD_VMA_FMT "x",
2695 (unsigned int) input_section->id,
2696 hash->root.root.root.string,
2697 rel->r_addend);
2698 }
2699 else
2700 {
2701 len = 8 + 1 + 8 + 1 + 8 + 1 + 16 + 1;
2702 stub_name = bfd_malloc (len);
2703 if (stub_name != NULL)
2704 snprintf (stub_name, len, "%08x_%x:%x+%" BFD_VMA_FMT "x",
2705 (unsigned int) input_section->id,
2706 (unsigned int) sym_sec->id,
cec5225b 2707 (unsigned int) ELFNN_R_SYM (rel->r_info),
a06ea964
NC		 2708 rel->r_addend);
2709 }
2710
2711 return stub_name;
2712}
2713
2714/* Look up an entry in the stub hash. Stub entries are cached because
2715 creating the stub name takes a bit of time. */
2716
cec5225b
YZ		 2717static struct elf_aarch64_stub_hash_entry *
2718elfNN_aarch64_get_stub_entry (const asection *input_section,
a06ea964
NC		 2719 const asection *sym_sec,
2720 struct elf_link_hash_entry *hash,
2721 const Elf_Internal_Rela *rel,
cec5225b 2722 struct elf_aarch64_link_hash_table *htab)
a06ea964 2723{
cec5225b
YZ		 2724 struct elf_aarch64_stub_hash_entry *stub_entry;
2725 struct elf_aarch64_link_hash_entry *h =
2726 (struct elf_aarch64_link_hash_entry *) hash;
a06ea964
NC		 2727 const asection *id_sec;
2728
2729 if ((input_section->flags & SEC_CODE) == 0)
2730 return NULL;
2731
2732 /* If this input section is part of a group of sections sharing one
2733 stub section, then use the id of the first section in the group.
2734 Stub names need to include a section id, as there may well be
2735 more than one stub used to reach say, printf, and we need to
2736 distinguish between them. */
2737 id_sec = htab->stub_group[input_section->id].link_sec;
2738
2739 if (h != NULL && h->stub_cache != NULL
2740 && h->stub_cache->h == h && h->stub_cache->id_sec == id_sec)
2741 {
2742 stub_entry = h->stub_cache;
2743 }
2744 else
2745 {
2746 char *stub_name;
2747
cec5225b 2748 stub_name = elfNN_aarch64_stub_name (id_sec, sym_sec, h, rel);
a06ea964
NC		 2749 if (stub_name == NULL)
2750 return NULL;
2751
2752 stub_entry = aarch64_stub_hash_lookup (&htab->stub_hash_table,
2753 stub_name, FALSE, FALSE);
2754 if (h != NULL)
2755 h->stub_cache = stub_entry;
2756
2757 free (stub_name);
2758 }
2759
2760 return stub_entry;
2761}
2762
a06ea964 2763
66585675
MS		 2764/* Create a stub section. */
2765
2766static asection *
2767_bfd_aarch64_create_stub_section (asection *section,
2768 struct elf_aarch64_link_hash_table *htab)
2769{
2770 size_t namelen;
2771 bfd_size_type len;
2772 char *s_name;
2773
2774 namelen = strlen (section->name);
2775 len = namelen + sizeof (STUB_SUFFIX);
2776 s_name = bfd_alloc (htab->stub_bfd, len);
2777 if (s_name == NULL)
2778 return NULL;
2779
2780 memcpy (s_name, section->name, namelen);
2781 memcpy (s_name + namelen, STUB_SUFFIX, sizeof (STUB_SUFFIX));
2782 return (*htab->add_stub_section) (s_name, section);
2783}
2784
2785
fc6d53be
MS		 2786/* Find or create a stub section for a link section.
2787
2788 Fix or create the stub section used to collect stubs attached to
2789 the specified link section. */
2790
2791static asection *
2792_bfd_aarch64_get_stub_for_link_section (asection *link_section,
2793 struct elf_aarch64_link_hash_table *htab)
2794{
2795 if (htab->stub_group[link_section->id].stub_sec == NULL)
2796 htab->stub_group[link_section->id].stub_sec
2797 = _bfd_aarch64_create_stub_section (link_section, htab);
2798 return htab->stub_group[link_section->id].stub_sec;
2799}
2800
2801
ef857521
MS		 2802/* Find or create a stub section in the stub group for an input
2803 section. */
2804
2805static asection *
2806_bfd_aarch64_create_or_find_stub_sec (asection *section,
2807 struct elf_aarch64_link_hash_table *htab)
a06ea964 2808{
fc6d53be
MS		 2809 asection *link_sec = htab->stub_group[section->id].link_sec;
2810 return _bfd_aarch64_get_stub_for_link_section (link_sec, htab);
ef857521
MS		 2811}
2812
2813
2814/* Add a new stub entry in the stub group associated with an input
2815 section to the stub hash. Not all fields of the new stub entry are
2816 initialised. */
2817
2818static struct elf_aarch64_stub_hash_entry *
2819_bfd_aarch64_add_stub_entry_in_group (const char *stub_name,
2820 asection *section,
2821 struct elf_aarch64_link_hash_table *htab)
2822{
2823 asection *link_sec;
2824 asection *stub_sec;
2825 struct elf_aarch64_stub_hash_entry *stub_entry;
2826
2827 link_sec = htab->stub_group[section->id].link_sec;
2828 stub_sec = _bfd_aarch64_create_or_find_stub_sec (section, htab);
2829
a06ea964
NC		 2830 /* Enter this entry into the linker stub hash table. */
2831 stub_entry = aarch64_stub_hash_lookup (&htab->stub_hash_table, stub_name,
2832 TRUE, FALSE);
2833 if (stub_entry == NULL)
2834 {
2835 (*_bfd_error_handler) (_("%s: cannot create stub entry %s"),
2836 section->owner, stub_name);
2837 return NULL;
2838 }
2839
2840 stub_entry->stub_sec = stub_sec;
2841 stub_entry->stub_offset = 0;
2842 stub_entry->id_sec = link_sec;
2843
2844 return stub_entry;
2845}
2846
4106101c
MS		 2847/* Add a new stub entry in the final stub section to the stub hash.
2848 Not all fields of the new stub entry are initialised. */
2849
2850static struct elf_aarch64_stub_hash_entry *
2851_bfd_aarch64_add_stub_entry_after (const char *stub_name,
2852 asection *link_section,
2853 struct elf_aarch64_link_hash_table *htab)
2854{
2855 asection *stub_sec;
2856 struct elf_aarch64_stub_hash_entry *stub_entry;
2857
2858 stub_sec = _bfd_aarch64_get_stub_for_link_section (link_section, htab);
2859 stub_entry = aarch64_stub_hash_lookup (&htab->stub_hash_table, stub_name,
2860 TRUE, FALSE);
2861 if (stub_entry == NULL)
2862 {
2863 (*_bfd_error_handler) (_("cannot create stub entry %s"), stub_name);
2864 return NULL;
2865 }
2866
2867 stub_entry->stub_sec = stub_sec;
2868 stub_entry->stub_offset = 0;
2869 stub_entry->id_sec = link_section;
2870
2871 return stub_entry;
2872}
2873
2874
a06ea964
NC		 2875static bfd_boolean
2876aarch64_build_one_stub (struct bfd_hash_entry *gen_entry,
2877 void *in_arg ATTRIBUTE_UNUSED)
2878{
cec5225b 2879 struct elf_aarch64_stub_hash_entry *stub_entry;
a06ea964
NC		 2880 asection *stub_sec;
2881 bfd *stub_bfd;
2882 bfd_byte *loc;
2883 bfd_vma sym_value;
68fcca92
JW		 2884 bfd_vma veneered_insn_loc;
2885 bfd_vma veneer_entry_loc;
2886 bfd_signed_vma branch_offset = 0;
a06ea964
NC		 2887 unsigned int template_size;
2888 const uint32_t *template;
2889 unsigned int i;
2890
2891 /* Massage our args to the form they really have. */
cec5225b 2892 stub_entry = (struct elf_aarch64_stub_hash_entry *) gen_entry;
a06ea964
NC		 2893
2894 stub_sec = stub_entry->stub_sec;
2895
2896 /* Make a note of the offset within the stubs for this entry. */
2897 stub_entry->stub_offset = stub_sec->size;
2898 loc = stub_sec->contents + stub_entry->stub_offset;
2899
2900 stub_bfd = stub_sec->owner;
2901
2902 /* This is the address of the stub destination. */
2903 sym_value = (stub_entry->target_value
2904 + stub_entry->target_section->output_offset
2905 + stub_entry->target_section->output_section->vma);
2906
2907 if (stub_entry->stub_type == aarch64_stub_long_branch)
2908 {
2909 bfd_vma place = (stub_entry->stub_offset + stub_sec->output_section->vma
2910 + stub_sec->output_offset);
2911
2912 /* See if we can relax the stub. */
2913 if (aarch64_valid_for_adrp_p (sym_value, place))
2914 stub_entry->stub_type = aarch64_select_branch_stub (sym_value, place);
2915 }
2916
2917 switch (stub_entry->stub_type)
2918 {
2919 case aarch64_stub_adrp_branch:
2920 template = aarch64_adrp_branch_stub;
2921 template_size = sizeof (aarch64_adrp_branch_stub);
2922 break;
2923 case aarch64_stub_long_branch:
2924 template = aarch64_long_branch_stub;
2925 template_size = sizeof (aarch64_long_branch_stub);
2926 break;
68fcca92
JW		 2927 case aarch64_stub_erratum_835769_veneer:
2928 template = aarch64_erratum_835769_stub;
2929 template_size = sizeof (aarch64_erratum_835769_stub);
2930 break;
4106101c
MS		 2931 case aarch64_stub_erratum_843419_veneer:
2932 template = aarch64_erratum_843419_stub;
2933 template_size = sizeof (aarch64_erratum_843419_stub);
2934 break;
a06ea964 2935 default:
8e2fe09f 2936 abort ();
a06ea964
NC		 2937 }
2938
2939 for (i = 0; i < (template_size / sizeof template[0]); i++)
2940 {
2941 bfd_putl32 (template[i], loc);
2942 loc += 4;
2943 }
2944
2945 template_size = (template_size + 7) & ~7;
2946 stub_sec->size += template_size;
2947
2948 switch (stub_entry->stub_type)
2949 {
2950 case aarch64_stub_adrp_branch:
a6bb11b2 2951 if (aarch64_relocate (AARCH64_R (ADR_PREL_PG_HI21), stub_bfd, stub_sec,
a06ea964
NC		 2952 stub_entry->stub_offset, sym_value))
2953 /* The stub would not have been relaxed if the offset was out
2954 of range. */
2955 BFD_FAIL ();
2956
93ca8569
TB		 2957 if (aarch64_relocate (AARCH64_R (ADD_ABS_LO12_NC), stub_bfd, stub_sec,
2958 stub_entry->stub_offset + 4, sym_value))
2959 BFD_FAIL ();
a06ea964
NC		 2960 break;
2961
2962 case aarch64_stub_long_branch:
2963 /* We want the value relative to the address 12 bytes back from the
2964 value itself. */
93ca8569
TB		 2965 if (aarch64_relocate (AARCH64_R (PRELNN), stub_bfd, stub_sec,
2966 stub_entry->stub_offset + 16, sym_value + 12))
2967 BFD_FAIL ();
a06ea964 2968 break;
68fcca92
JW		 2969
2970 case aarch64_stub_erratum_835769_veneer:
2971 veneered_insn_loc = stub_entry->target_section->output_section->vma
2972 + stub_entry->target_section->output_offset
2973 + stub_entry->target_value;
2974 veneer_entry_loc = stub_entry->stub_sec->output_section->vma
2975 + stub_entry->stub_sec->output_offset
2976 + stub_entry->stub_offset;
2977 branch_offset = veneered_insn_loc - veneer_entry_loc;
2978 branch_offset >>= 2;
2979 branch_offset &= 0x3ffffff;
2980 bfd_putl32 (stub_entry->veneered_insn,
2981 stub_sec->contents + stub_entry->stub_offset);
2982 bfd_putl32 (template[1] | branch_offset,
2983 stub_sec->contents + stub_entry->stub_offset + 4);
2984 break;
2985
4106101c
MS		 2986 case aarch64_stub_erratum_843419_veneer:
2987 if (aarch64_relocate (AARCH64_R (JUMP26), stub_bfd, stub_sec,
2988 stub_entry->stub_offset + 4, sym_value + 4))
2989 BFD_FAIL ();
2990 break;
2991
a06ea964 2992 default:
8e2fe09f 2993 abort ();
a06ea964
NC		 2994 }
2995
2996 return TRUE;
2997}
2998
2999/* As above, but don't actually build the stub. Just bump offset so
3000 we know stub section sizes. */
3001
3002static bfd_boolean
3003aarch64_size_one_stub (struct bfd_hash_entry *gen_entry,
3004 void *in_arg ATTRIBUTE_UNUSED)
3005{
cec5225b 3006 struct elf_aarch64_stub_hash_entry *stub_entry;
a06ea964
NC		 3007 int size;
3008
3009 /* Massage our args to the form they really have. */
cec5225b 3010 stub_entry = (struct elf_aarch64_stub_hash_entry *) gen_entry;
a06ea964
NC		 3011
3012 switch (stub_entry->stub_type)
3013 {
3014 case aarch64_stub_adrp_branch:
3015 size = sizeof (aarch64_adrp_branch_stub);
3016 break;
3017 case aarch64_stub_long_branch:
3018 size = sizeof (aarch64_long_branch_stub);
3019 break;
68fcca92
JW		 3020 case aarch64_stub_erratum_835769_veneer:
3021 size = sizeof (aarch64_erratum_835769_stub);
3022 break;
4106101c
MS		 3023 case aarch64_stub_erratum_843419_veneer:
3024 size = sizeof (aarch64_erratum_843419_stub);
3025 break;
a06ea964 3026 default:
8e2fe09f 3027 abort ();
a06ea964
NC		 3028 }
3029
3030 size = (size + 7) & ~7;
3031 stub_entry->stub_sec->size += size;
3032 return TRUE;
3033}
3034
3035/* External entry points for sizing and building linker stubs. */
3036
3037/* Set up various things so that we can make a list of input sections
3038 for each output section included in the link. Returns -1 on error,
3039 0 when no stubs will be needed, and 1 on success. */
3040
3041int
cec5225b 3042elfNN_aarch64_setup_section_lists (bfd *output_bfd,
a06ea964
NC		 3043 struct bfd_link_info *info)
3044{
3045 bfd *input_bfd;
3046 unsigned int bfd_count;
7292b3ac 3047 unsigned int top_id, top_index;
a06ea964
NC		 3048 asection *section;
3049 asection **input_list, **list;
3050 bfd_size_type amt;
cec5225b
YZ		 3051 struct elf_aarch64_link_hash_table *htab =
3052 elf_aarch64_hash_table (info);
a06ea964
NC		 3053
3054 if (!is_elf_hash_table (htab))
3055 return 0;
3056
3057 /* Count the number of input BFDs and find the top input section id. */
3058 for (input_bfd = info->input_bfds, bfd_count = 0, top_id = 0;
c72f2fb2 3059 input_bfd != NULL; input_bfd = input_bfd->link.next)
a06ea964
NC		 3060 {
3061 bfd_count += 1;
3062 for (section = input_bfd->sections;
3063 section != NULL; section = section->next)
3064 {
3065 if (top_id < section->id)
3066 top_id = section->id;
3067 }
3068 }
3069 htab->bfd_count = bfd_count;
3070
3071 amt = sizeof (struct map_stub) * (top_id + 1);
3072 htab->stub_group = bfd_zmalloc (amt);
3073 if (htab->stub_group == NULL)
3074 return -1;
3075
3076 /* We can't use output_bfd->section_count here to find the top output
3077 section index as some sections may have been removed, and
3078 _bfd_strip_section_from_output doesn't renumber the indices. */
3079 for (section = output_bfd->sections, top_index = 0;
3080 section != NULL; section = section->next)
3081 {
3082 if (top_index < section->index)
3083 top_index = section->index;
3084 }
3085
3086 htab->top_index = top_index;
3087 amt = sizeof (asection *) * (top_index + 1);
3088 input_list = bfd_malloc (amt);
3089 htab->input_list = input_list;
3090 if (input_list == NULL)
3091 return -1;
3092
3093 /* For sections we aren't interested in, mark their entries with a
3094 value we can check later. */
3095 list = input_list + top_index;
3096 do
3097 *list = bfd_abs_section_ptr;
3098 while (list-- != input_list);
3099
3100 for (section = output_bfd->sections;
3101 section != NULL; section = section->next)
3102 {
3103 if ((section->flags & SEC_CODE) != 0)
3104 input_list[section->index] = NULL;
3105 }
3106
3107 return 1;
3108}
3109
cec5225b 3110/* Used by elfNN_aarch64_next_input_section and group_sections. */
a06ea964
NC		 3111#define PREV_SEC(sec) (htab->stub_group[(sec)->id].link_sec)
3112
3113/* The linker repeatedly calls this function for each input section,
3114 in the order that input sections are linked into output sections.
3115 Build lists of input sections to determine groupings between which
3116 we may insert linker stubs. */
3117
3118void
cec5225b 3119elfNN_aarch64_next_input_section (struct bfd_link_info *info, asection *isec)
a06ea964 3120{
cec5225b
YZ		 3121 struct elf_aarch64_link_hash_table *htab =
3122 elf_aarch64_hash_table (info);
a06ea964
NC		 3123
3124 if (isec->output_section->index <= htab->top_index)
3125 {
3126 asection **list = htab->input_list + isec->output_section->index;
3127
3128 if (*list != bfd_abs_section_ptr)
3129 {
3130 /* Steal the link_sec pointer for our list. */
3131 /* This happens to make the list in reverse order,
3132 which is what we want. */
3133 PREV_SEC (isec) = *list;
3134 *list = isec;
3135 }
3136 }
3137}
3138
3139/* See whether we can group stub sections together. Grouping stub
3140 sections may result in fewer stubs. More importantly, we need to
3141 put all .init* and .fini* stubs at the beginning of the .init or
3142 .fini output sections respectively, because glibc splits the
3143 _init and _fini functions into multiple parts. Putting a stub in
3144 the middle of a function is not a good idea. */
3145
3146static void
cec5225b 3147group_sections (struct elf_aarch64_link_hash_table *htab,
a06ea964
NC		 3148 bfd_size_type stub_group_size,
3149 bfd_boolean stubs_always_before_branch)
3150{
3151 asection **list = htab->input_list + htab->top_index;
3152
3153 do
3154 {
3155 asection *tail = *list;
3156
3157 if (tail == bfd_abs_section_ptr)
3158 continue;
3159
3160 while (tail != NULL)
3161 {
3162 asection *curr;
3163 asection *prev;
3164 bfd_size_type total;
3165
3166 curr = tail;
3167 total = tail->size;
3168 while ((prev = PREV_SEC (curr)) != NULL
3169 && ((total += curr->output_offset - prev->output_offset)
3170 < stub_group_size))
3171 curr = prev;
3172
3173 /* OK, the size from the start of CURR to the end is less
3174 than stub_group_size and thus can be handled by one stub
3175 section. (Or the tail section is itself larger than
3176 stub_group_size, in which case we may be toast.)
3177 We should really be keeping track of the total size of
3178 stubs added here, as stubs contribute to the final output
3179 section size. */
3180 do
3181 {
3182 prev = PREV_SEC (tail);
3183 /* Set up this stub group. */
3184 htab->stub_group[tail->id].link_sec = curr;
3185 }
3186 while (tail != curr && (tail = prev) != NULL);
3187
3188 /* But wait, there's more! Input sections up to stub_group_size
3189 bytes before the stub section can be handled by it too. */
3190 if (!stubs_always_before_branch)
3191 {
3192 total = 0;
3193 while (prev != NULL
3194 && ((total += tail->output_offset - prev->output_offset)
3195 < stub_group_size))
3196 {
3197 tail = prev;
3198 prev = PREV_SEC (tail);
3199 htab->stub_group[tail->id].link_sec = curr;
3200 }
3201 }
3202 tail = prev;
3203 }
3204 }
3205 while (list-- != htab->input_list);
3206
3207 free (htab->input_list);
3208}
3209
3210#undef PREV_SEC
3211
68fcca92
JW		 3212#define AARCH64_BITS(x, pos, n) (((x) >> (pos)) & ((1 << (n)) - 1))
3213
3214#define AARCH64_RT(insn) AARCH64_BITS (insn, 0, 5)
3215#define AARCH64_RT2(insn) AARCH64_BITS (insn, 10, 5)
3216#define AARCH64_RA(insn) AARCH64_BITS (insn, 10, 5)
3217#define AARCH64_RD(insn) AARCH64_BITS (insn, 0, 5)
3218#define AARCH64_RN(insn) AARCH64_BITS (insn, 5, 5)
3219#define AARCH64_RM(insn) AARCH64_BITS (insn, 16, 5)
3220
3221#define AARCH64_MAC(insn) (((insn) & 0xff000000) == 0x9b000000)
3222#define AARCH64_BIT(insn, n) AARCH64_BITS (insn, n, 1)
3223#define AARCH64_OP31(insn) AARCH64_BITS (insn, 21, 3)
3224#define AARCH64_ZR 0x1f
3225
3226/* All ld/st ops. See C4-182 of the ARM ARM. The encoding space for
3227 LD_PCREL, LDST_RO, LDST_UI and LDST_UIMM cover prefetch ops. */
3228
3229#define AARCH64_LD(insn) (AARCH64_BIT (insn, 22) == 1)
3230#define AARCH64_LDST(insn) (((insn) & 0x0a000000) == 0x08000000)
3231#define AARCH64_LDST_EX(insn) (((insn) & 0x3f000000) == 0x08000000)
3232#define AARCH64_LDST_PCREL(insn) (((insn) & 0x3b000000) == 0x18000000)
3233#define AARCH64_LDST_NAP(insn) (((insn) & 0x3b800000) == 0x28000000)
3234#define AARCH64_LDSTP_PI(insn) (((insn) & 0x3b800000) == 0x28800000)
3235#define AARCH64_LDSTP_O(insn) (((insn) & 0x3b800000) == 0x29000000)
3236#define AARCH64_LDSTP_PRE(insn) (((insn) & 0x3b800000) == 0x29800000)
3237#define AARCH64_LDST_UI(insn) (((insn) & 0x3b200c00) == 0x38000000)
3238#define AARCH64_LDST_PIIMM(insn) (((insn) & 0x3b200c00) == 0x38000400)
3239#define AARCH64_LDST_U(insn) (((insn) & 0x3b200c00) == 0x38000800)
3240#define AARCH64_LDST_PREIMM(insn) (((insn) & 0x3b200c00) == 0x38000c00)
3241#define AARCH64_LDST_RO(insn) (((insn) & 0x3b200c00) == 0x38200800)
3242#define AARCH64_LDST_UIMM(insn) (((insn) & 0x3b000000) == 0x39000000)
3243#define AARCH64_LDST_SIMD_M(insn) (((insn) & 0xbfbf0000) == 0x0c000000)
3244#define AARCH64_LDST_SIMD_M_PI(insn) (((insn) & 0xbfa00000) == 0x0c800000)
3245#define AARCH64_LDST_SIMD_S(insn) (((insn) & 0xbf9f0000) == 0x0d000000)
3246#define AARCH64_LDST_SIMD_S_PI(insn) (((insn) & 0xbf800000) == 0x0d800000)
3247
3d14faea
MS		 3248/* Classify an INSN if it is indeed a load/store.
3249
3250 Return TRUE if INSN is a LD/ST instruction otherwise return FALSE.
3251
3252 For scalar LD/ST instructions PAIR is FALSE, RT is returned and RT2
3253 is set equal to RT.
3254
3255 For LD/ST pair instructions PAIR is TRUE, RT and RT2 are returned.
3256
3257 */
68fcca92
JW		 3258
3259static bfd_boolean
3d14faea 3260aarch64_mem_op_p (uint32_t insn, unsigned int *rt, unsigned int *rt2,
68fcca92
JW		 3261 bfd_boolean *pair, bfd_boolean *load)
3262{
3263 uint32_t opcode;
3264 unsigned int r;
3265 uint32_t opc = 0;
3266 uint32_t v = 0;
3267 uint32_t opc_v = 0;
3268
3269 /* Bail out quickly if INSN doesn't fall into the the load-store
3270 encoding space. */
3271 if (!AARCH64_LDST (insn))
3272 return FALSE;
3273
3274 *pair = FALSE;
3275 *load = FALSE;
3276 if (AARCH64_LDST_EX (insn))
3277 {
3278 *rt = AARCH64_RT (insn);
3d14faea 3279 *rt2 = *rt;
68fcca92
JW		 3280 if (AARCH64_BIT (insn, 21) == 1)
3281 {
3282 *pair = TRUE;
3d14faea 3283 *rt2 = AARCH64_RT2 (insn);
68fcca92
JW		 3284 }
3285 *load = AARCH64_LD (insn);
3286 return TRUE;
3287 }
3288 else if (AARCH64_LDST_NAP (insn)
3289 || AARCH64_LDSTP_PI (insn)
3290 || AARCH64_LDSTP_O (insn)
3291 || AARCH64_LDSTP_PRE (insn))
3292 {
3293 *pair = TRUE;
3294 *rt = AARCH64_RT (insn);
3d14faea 3295 *rt2 = AARCH64_RT2 (insn);
68fcca92
JW		 3296 *load = AARCH64_LD (insn);
3297 return TRUE;
3298 }
3299 else if (AARCH64_LDST_PCREL (insn)
3300 || AARCH64_LDST_UI (insn)
3301 || AARCH64_LDST_PIIMM (insn)
3302 || AARCH64_LDST_U (insn)
3303 || AARCH64_LDST_PREIMM (insn)
3304 || AARCH64_LDST_RO (insn)
3305 || AARCH64_LDST_UIMM (insn))
3306 {
3307 *rt = AARCH64_RT (insn);
3d14faea 3308 *rt2 = *rt;
68fcca92
JW		 3309 if (AARCH64_LDST_PCREL (insn))
3310 *load = TRUE;
3311 opc = AARCH64_BITS (insn, 22, 2);
3312 v = AARCH64_BIT (insn, 26);
3313 opc_v = opc | (v << 2);
3314 *load = (opc_v == 1 || opc_v == 2 || opc_v == 3
3315 || opc_v == 5 || opc_v == 7);
3316 return TRUE;
3317 }
3318 else if (AARCH64_LDST_SIMD_M (insn)
3319 || AARCH64_LDST_SIMD_M_PI (insn))
3320 {
3321 *rt = AARCH64_RT (insn);
3322 *load = AARCH64_BIT (insn, 22);
3323 opcode = (insn >> 12) & 0xf;
3324 switch (opcode)
3325 {
3326 case 0:
3327 case 2:
3d14faea 3328 *rt2 = *rt + 3;
68fcca92
JW		 3329 break;
3330
3331 case 4:
3332 case 6:
3d14faea 3333 *rt2 = *rt + 2;
68fcca92
JW		 3334 break;
3335
3336 case 7:
3d14faea 3337 *rt2 = *rt;
68fcca92
JW		 3338 break;
3339
3340 case 8:
3341 case 10:
3d14faea 3342 *rt2 = *rt + 1;
68fcca92
JW		 3343 break;
3344
3345 default:
3346 return FALSE;
3347 }
3348 return TRUE;
3349 }
3350 else if (AARCH64_LDST_SIMD_S (insn)
3351 || AARCH64_LDST_SIMD_S_PI (insn))
3352 {
3353 *rt = AARCH64_RT (insn);
3354 r = (insn >> 21) & 1;
3355 *load = AARCH64_BIT (insn, 22);
3356 opcode = (insn >> 13) & 0x7;
3357 switch (opcode)
3358 {
3359 case 0:
3360 case 2:
3361 case 4:
3d14faea 3362 *rt2 = *rt + r;
68fcca92
JW		 3363 break;
3364
3365 case 1:
3366 case 3:
3367 case 5:
3d14faea 3368 *rt2 = *rt + (r == 0 ? 2 : 3);
68fcca92
JW		 3369 break;
3370
3371 case 6:
3d14faea 3372 *rt2 = *rt + r;
68fcca92
JW		 3373 break;
3374
3375 case 7:
3d14faea 3376 *rt2 = *rt + (r == 0 ? 2 : 3);
68fcca92
JW		 3377 break;
3378
3379 default:
3380 return FALSE;
3381 }
3382 return TRUE;
3383 }
3384
3385 return FALSE;
3386}
3387
3388/* Return TRUE if INSN is multiply-accumulate. */
3389
3390static bfd_boolean
3391aarch64_mlxl_p (uint32_t insn)
3392{
3393 uint32_t op31 = AARCH64_OP31 (insn);
3394
3395 if (AARCH64_MAC (insn)
3396 && (op31 == 0 || op31 == 1 || op31 == 5)
3397 /* Exclude MUL instructions which are encoded as a multiple accumulate
3398 with RA = XZR. */
3399 && AARCH64_RA (insn) != AARCH64_ZR)
3400 return TRUE;
3401
3402 return FALSE;
3403}
3404
3405/* Some early revisions of the Cortex-A53 have an erratum (835769) whereby
3406 it is possible for a 64-bit multiply-accumulate instruction to generate an
3407 incorrect result. The details are quite complex and hard to
3408 determine statically, since branches in the code may exist in some
3409 circumstances, but all cases end with a memory (load, store, or
3410 prefetch) instruction followed immediately by the multiply-accumulate
3411 operation. We employ a linker patching technique, by moving the potentially
3412 affected multiply-accumulate instruction into a patch region and replacing
3413 the original instruction with a branch to the patch. This function checks
3414 if INSN_1 is the memory operation followed by a multiply-accumulate
3415 operation (INSN_2). Return TRUE if an erratum sequence is found, FALSE
3416 if INSN_1 and INSN_2 are safe. */
3417
3418static bfd_boolean
3419aarch64_erratum_sequence (uint32_t insn_1, uint32_t insn_2)
3420{
3421 uint32_t rt;
3d14faea 3422 uint32_t rt2;
68fcca92
JW		 3423 uint32_t rn;
3424 uint32_t rm;
3425 uint32_t ra;
3426 bfd_boolean pair;
3427 bfd_boolean load;
3428
3429 if (aarch64_mlxl_p (insn_2)
3d14faea 3430 && aarch64_mem_op_p (insn_1, &rt, &rt2, &pair, &load))
68fcca92
JW		 3431 {
3432 /* Any SIMD memory op is independent of the subsequent MLA
3433 by definition of the erratum. */
3434 if (AARCH64_BIT (insn_1, 26))
3435 return TRUE;
3436
3437 /* If not SIMD, check for integer memory ops and MLA relationship. */
3438 rn = AARCH64_RN (insn_2);
3439 ra = AARCH64_RA (insn_2);
3440 rm = AARCH64_RM (insn_2);
3441
3442 /* If this is a load and there's a true(RAW) dependency, we are safe
3443 and this is not an erratum sequence. */
3444 if (load &&
3445 (rt == rn || rt == rm || rt == ra
3d14faea 3446 || (pair && (rt2 == rn || rt2 == rm || rt2 == ra))))
68fcca92
JW		 3447 return FALSE;
3448
3449 /* We conservatively put out stubs for all other cases (including
3450 writebacks). */
3451 return TRUE;
3452 }
3453
3454 return FALSE;
3455}
3456
520c7b56
JW		 3457/* Used to order a list of mapping symbols by address. */
3458
3459static int
3460elf_aarch64_compare_mapping (const void *a, const void *b)
3461{
3462 const elf_aarch64_section_map *amap = (const elf_aarch64_section_map *) a;
3463 const elf_aarch64_section_map *bmap = (const elf_aarch64_section_map *) b;
3464
3465 if (amap->vma > bmap->vma)
3466 return 1;
3467 else if (amap->vma < bmap->vma)
3468 return -1;
3469 else if (amap->type > bmap->type)
3470 /* Ensure results do not depend on the host qsort for objects with
3471 multiple mapping symbols at the same address by sorting on type
3472 after vma. */
3473 return 1;
3474 else if (amap->type < bmap->type)
3475 return -1;
3476 else
3477 return 0;
3478}
3479
2144188d 3480
35fee8b7
MS		 3481static char *
3482_bfd_aarch64_erratum_835769_stub_name (unsigned num_fixes)
3483{
3484 char *stub_name = (char *) bfd_malloc
3485 (strlen ("__erratum_835769_veneer_") + 16);
3486 sprintf (stub_name,"__erratum_835769_veneer_%d", num_fixes);
3487 return stub_name;
3488}
3489
4106101c 3490/* Scan for Cortex-A53 erratum 835769 sequence.
2144188d
MS		 3491
3492 Return TRUE else FALSE on abnormal termination. */
3493
68fcca92 3494static bfd_boolean
5421cc6e
MS		 3495_bfd_aarch64_erratum_835769_scan (bfd *input_bfd,
3496 struct bfd_link_info *info,
3497 unsigned int *num_fixes_p)
68fcca92
JW		 3498{
3499 asection *section;
3500 struct elf_aarch64_link_hash_table *htab = elf_aarch64_hash_table (info);
68fcca92 3501 unsigned int num_fixes = *num_fixes_p;
68fcca92
JW		 3502
3503 if (htab == NULL)
2144188d 3504 return TRUE;
68fcca92
JW		 3505
3506 for (section = input_bfd->sections;
3507 section != NULL;
3508 section = section->next)
3509 {
3510 bfd_byte *contents = NULL;
3511 struct _aarch64_elf_section_data *sec_data;
3512 unsigned int span;
3513
3514 if (elf_section_type (section) != SHT_PROGBITS
3515 || (elf_section_flags (section) & SHF_EXECINSTR) == 0
3516 || (section->flags & SEC_EXCLUDE) != 0
3517 || (section->sec_info_type == SEC_INFO_TYPE_JUST_SYMS)
3518 || (section->output_section == bfd_abs_section_ptr))
3519 continue;
3520
3521 if (elf_section_data (section)->this_hdr.contents != NULL)
3522 contents = elf_section_data (section)->this_hdr.contents;
3523 else if (! bfd_malloc_and_get_section (input_bfd, section, &contents))
2144188d 3524 return FALSE;
68fcca92
JW		 3525
3526 sec_data = elf_aarch64_section_data (section);
520c7b56
JW		 3527
3528 qsort (sec_data->map, sec_data->mapcount,
3529 sizeof (elf_aarch64_section_map), elf_aarch64_compare_mapping);
3530
68fcca92
JW		 3531 for (span = 0; span < sec_data->mapcount; span++)
3532 {
3533 unsigned int span_start = sec_data->map[span].vma;
3534 unsigned int span_end = ((span == sec_data->mapcount - 1)
3535 ? sec_data->map[0].vma + section->size
3536 : sec_data->map[span + 1].vma);
3537 unsigned int i;
3538 char span_type = sec_data->map[span].type;
3539
3540 if (span_type == 'd')
3541 continue;
3542
3543 for (i = span_start; i + 4 < span_end; i += 4)
3544 {
3545 uint32_t insn_1 = bfd_getl32 (contents + i);
3546 uint32_t insn_2 = bfd_getl32 (contents + i + 4);
3547
3548 if (aarch64_erratum_sequence (insn_1, insn_2))
3549 {
5421cc6e 3550 struct elf_aarch64_stub_hash_entry *stub_entry;
35fee8b7
MS		 3551 char *stub_name = _bfd_aarch64_erratum_835769_stub_name (num_fixes);
3552 if (! stub_name)
2144188d 3553 return FALSE;
68fcca92 3554
5421cc6e
MS		 3555 stub_entry = _bfd_aarch64_add_stub_entry_in_group (stub_name,
3556 section,
3557 htab);
3558 if (! stub_entry)
3559 return FALSE;
68fcca92 3560
5421cc6e
MS		 3561 stub_entry->stub_type = aarch64_stub_erratum_835769_veneer;
3562 stub_entry->target_section = section;
3563 stub_entry->target_value = i + 4;
3564 stub_entry->veneered_insn = insn_2;
3565 stub_entry->output_name = stub_name;
68fcca92
JW		 3566 num_fixes++;
3567 }
3568 }
3569 }
3570 if (elf_section_data (section)->this_hdr.contents == NULL)
3571 free (contents);
3572 }
3573
357d1523
MS		 3574 *num_fixes_p = num_fixes;
3575
2144188d 3576 return TRUE;
68fcca92
JW		 3577}
3578
13f622ec 3579
4106101c
MS		 3580/* Test if instruction INSN is ADRP. */
3581
3582static bfd_boolean
3583_bfd_aarch64_adrp_p (uint32_t insn)
3584{
3585 return ((insn & 0x9f000000) == 0x90000000);
3586}
3587
3588
3589/* Helper predicate to look for cortex-a53 erratum 843419 sequence 1. */
3590
3591static bfd_boolean
3592_bfd_aarch64_erratum_843419_sequence_p (uint32_t insn_1, uint32_t insn_2,
3593 uint32_t insn_3)
3594{
3595 uint32_t rt;
3596 uint32_t rt2;
3597 bfd_boolean pair;
3598 bfd_boolean load;
3599
3600 return (aarch64_mem_op_p (insn_2, &rt, &rt2, &pair, &load)
3601 && (!pair
3602 || (pair && !load))
3603 && AARCH64_LDST_UIMM (insn_3)
3604 && AARCH64_RN (insn_3) == AARCH64_RD (insn_1));
3605}
3606
3607
3608/* Test for the presence of Cortex-A53 erratum 843419 instruction sequence.
3609
3610 Return TRUE if section CONTENTS at offset I contains one of the
3611 erratum 843419 sequences, otherwise return FALSE. If a sequence is
3612 seen set P_VENEER_I to the offset of the final LOAD/STORE
3613 instruction in the sequence.
3614 */
3615
3616static bfd_boolean
3617_bfd_aarch64_erratum_843419_p (bfd_byte *contents, bfd_vma vma,
3618 bfd_vma i, bfd_vma span_end,
3619 bfd_vma *p_veneer_i)
3620{
3621 uint32_t insn_1 = bfd_getl32 (contents + i);
3622
3623 if (!_bfd_aarch64_adrp_p (insn_1))
3624 return FALSE;
3625
3626 if (span_end < i + 12)
3627 return FALSE;
3628
3629 uint32_t insn_2 = bfd_getl32 (contents + i + 4);
3630 uint32_t insn_3 = bfd_getl32 (contents + i + 8);
3631
3632 if ((vma & 0xfff) != 0xff8 && (vma & 0xfff) != 0xffc)
3633 return FALSE;
3634
3635 if (_bfd_aarch64_erratum_843419_sequence_p (insn_1, insn_2, insn_3))
3636 {
3637 *p_veneer_i = i + 8;
3638 return TRUE;
3639 }
3640
3641 if (span_end < i + 16)
3642 return FALSE;
3643
3644 uint32_t insn_4 = bfd_getl32 (contents + i + 12);
3645
3646 if (_bfd_aarch64_erratum_843419_sequence_p (insn_1, insn_2, insn_4))
3647 {
3648 *p_veneer_i = i + 12;
3649 return TRUE;
3650 }
3651
3652 return FALSE;
3653}
3654
3655
13f622ec
MS		 3656/* Resize all stub sections. */
3657
3658static void
3659_bfd_aarch64_resize_stubs (struct elf_aarch64_link_hash_table *htab)
3660{
3661 asection *section;
3662
3663 /* OK, we've added some stubs. Find out the new size of the
3664 stub sections. */
3665 for (section = htab->stub_bfd->sections;
3666 section != NULL; section = section->next)
3667 {
3668 /* Ignore non-stub sections. */
3669 if (!strstr (section->name, STUB_SUFFIX))
3670 continue;
3671 section->size = 0;
3672 }
3673
3674 bfd_hash_traverse (&htab->stub_hash_table, aarch64_size_one_stub, htab);
13f622ec 3675
61865519
MS		 3676 for (section = htab->stub_bfd->sections;
3677 section != NULL; section = section->next)
3678 {
3679 if (!strstr (section->name, STUB_SUFFIX))
3680 continue;
3681
3682 if (section->size)
3683 section->size += 4;
4106101c
MS		 3684
3685 /* Ensure all stub sections have a size which is a multiple of
3686 4096. This is important in order to ensure that the insertion
3687 of stub sections does not in itself move existing code around
3688 in such a way that new errata sequences are created. */
3689 if (htab->fix_erratum_843419)
3690 if (section->size)
3691 section->size = BFD_ALIGN (section->size, 0x1000);
3692 }
3693}
3694
3695
3696/* Construct an erratum 843419 workaround stub name.
3697 */
3698
3699static char *
3700_bfd_aarch64_erratum_843419_stub_name (asection *input_section,
3701 bfd_vma offset)
3702{
3703 const bfd_size_type len = 8 + 4 + 1 + 8 + 1 + 16 + 1;
3704 char *stub_name = bfd_malloc (len);
3705
3706 if (stub_name != NULL)
3707 snprintf (stub_name, len, "e843419@%04x_%08x_%" BFD_VMA_FMT "x",
3708 input_section->owner->id,
3709 input_section->id,
3710 offset);
3711 return stub_name;
3712}
3713
3714/* Build a stub_entry structure describing an 843419 fixup.
3715
3716 The stub_entry constructed is populated with the bit pattern INSN
3717 of the instruction located at OFFSET within input SECTION.
3718
3719 Returns TRUE on success. */
3720
3721static bfd_boolean
3722_bfd_aarch64_erratum_843419_fixup (uint32_t insn,
3723 bfd_vma adrp_offset,
3724 bfd_vma ldst_offset,
3725 asection *section,
3726 struct bfd_link_info *info)
3727{
3728 struct elf_aarch64_link_hash_table *htab = elf_aarch64_hash_table (info);
3729 char *stub_name;
3730 struct elf_aarch64_stub_hash_entry *stub_entry;
3731
3732 stub_name = _bfd_aarch64_erratum_843419_stub_name (section, ldst_offset);
3733 stub_entry = aarch64_stub_hash_lookup (&htab->stub_hash_table, stub_name,
3734 FALSE, FALSE);
3735 if (stub_entry)
3736 {
3737 free (stub_name);
3738 return TRUE;
3739 }
3740
3741 /* We always place an 843419 workaround veneer in the stub section
3742 attached to the input section in which an erratum sequence has
3743 been found. This ensures that later in the link process (in
3744 elfNN_aarch64_write_section) when we copy the veneered
3745 instruction from the input section into the stub section the
3746 copied instruction will have had any relocations applied to it.
3747 If we placed workaround veneers in any other stub section then we
3748 could not assume that all relocations have been processed on the
3749 corresponding input section at the point we output the stub
3750 section.
3751 */
3752
3753 stub_entry = _bfd_aarch64_add_stub_entry_after (stub_name, section, htab);
3754 if (stub_entry == NULL)
3755 {
3756 free (stub_name);
3757 return FALSE;
3758 }
3759
3760 stub_entry->adrp_offset = adrp_offset;
3761 stub_entry->target_value = ldst_offset;
3762 stub_entry->target_section = section;
3763 stub_entry->stub_type = aarch64_stub_erratum_843419_veneer;
3764 stub_entry->veneered_insn = insn;
3765 stub_entry->output_name = stub_name;
3766
3767 return TRUE;
3768}
3769
3770
3771/* Scan an input section looking for the signature of erratum 843419.
3772
3773 Scans input SECTION in INPUT_BFD looking for erratum 843419
3774 signatures, for each signature found a stub_entry is created
3775 describing the location of the erratum for subsequent fixup.
3776
3777 Return TRUE on successful scan, FALSE on failure to scan.
3778 */
3779
3780static bfd_boolean
3781_bfd_aarch64_erratum_843419_scan (bfd *input_bfd, asection *section,
3782 struct bfd_link_info *info)
3783{
3784 struct elf_aarch64_link_hash_table *htab = elf_aarch64_hash_table (info);
3785
3786 if (htab == NULL)
3787 return TRUE;
3788
3789 if (elf_section_type (section) != SHT_PROGBITS
3790 || (elf_section_flags (section) & SHF_EXECINSTR) == 0
3791 || (section->flags & SEC_EXCLUDE) != 0
3792 || (section->sec_info_type == SEC_INFO_TYPE_JUST_SYMS)
3793 || (section->output_section == bfd_abs_section_ptr))
3794 return TRUE;
3795
3796 do
3797 {
3798 bfd_byte *contents = NULL;
3799 struct _aarch64_elf_section_data *sec_data;
3800 unsigned int span;
3801
3802 if (elf_section_data (section)->this_hdr.contents != NULL)
3803 contents = elf_section_data (section)->this_hdr.contents;
3804 else if (! bfd_malloc_and_get_section (input_bfd, section, &contents))
3805 return FALSE;
3806
3807 sec_data = elf_aarch64_section_data (section);
3808
3809 qsort (sec_data->map, sec_data->mapcount,
3810 sizeof (elf_aarch64_section_map), elf_aarch64_compare_mapping);
3811
3812 for (span = 0; span < sec_data->mapcount; span++)
3813 {
3814 unsigned int span_start = sec_data->map[span].vma;
3815 unsigned int span_end = ((span == sec_data->mapcount - 1)
3816 ? sec_data->map[0].vma + section->size
3817 : sec_data->map[span + 1].vma);
3818 unsigned int i;
3819 char span_type = sec_data->map[span].type;
3820
3821 if (span_type == 'd')
3822 continue;
3823
3824 for (i = span_start; i + 8 < span_end; i += 4)
3825 {
3826 bfd_vma vma = (section->output_section->vma
3827 + section->output_offset
3828 + i);
3829 bfd_vma veneer_i;
3830
3831 if (_bfd_aarch64_erratum_843419_p
3832 (contents, vma, i, span_end, &veneer_i))
3833 {
3834 uint32_t insn = bfd_getl32 (contents + veneer_i);
3835
3836 if (!_bfd_aarch64_erratum_843419_fixup (insn, i, veneer_i,
3837 section, info))
3838 return FALSE;
3839 }
3840 }
3841 }
3842
3843 if (elf_section_data (section)->this_hdr.contents == NULL)
3844 free (contents);
61865519 3845 }
4106101c
MS		 3846 while (0);
3847
3848 return TRUE;
61865519 3849}
13f622ec 3850
4106101c 3851
a06ea964
NC		 3852/* Determine and set the size of the stub section for a final link.
3853
3854 The basic idea here is to examine all the relocations looking for
3855 PC-relative calls to a target that is unreachable with a "bl"
3856 instruction. */
3857
3858bfd_boolean
cec5225b 3859elfNN_aarch64_size_stubs (bfd *output_bfd,
a06ea964
NC		 3860 bfd *stub_bfd,
3861 struct bfd_link_info *info,
3862 bfd_signed_vma group_size,
3863 asection * (*add_stub_section) (const char *,
3864 asection *),
3865 void (*layout_sections_again) (void))
3866{
3867 bfd_size_type stub_group_size;
3868 bfd_boolean stubs_always_before_branch;
5421cc6e 3869 bfd_boolean stub_changed = FALSE;
cec5225b 3870 struct elf_aarch64_link_hash_table *htab = elf_aarch64_hash_table (info);
68fcca92 3871 unsigned int num_erratum_835769_fixes = 0;
a06ea964
NC		 3872
3873 /* Propagate mach to stub bfd, because it may not have been
3874 finalized when we created stub_bfd. */
3875 bfd_set_arch_mach (stub_bfd, bfd_get_arch (output_bfd),
3876 bfd_get_mach (output_bfd));
3877
3878 /* Stash our params away. */
3879 htab->stub_bfd = stub_bfd;
3880 htab->add_stub_section = add_stub_section;
3881 htab->layout_sections_again = layout_sections_again;
3882 stubs_always_before_branch = group_size < 0;
3883 if (group_size < 0)
3884 stub_group_size = -group_size;
3885 else
3886 stub_group_size = group_size;
3887
3888 if (stub_group_size == 1)
3889 {
3890 /* Default values. */
b9eead84 3891 /* AArch64 branch range is +-128MB. The value used is 1MB less. */
a06ea964
NC		 3892 stub_group_size = 127 * 1024 * 1024;
3893 }
3894
3895 group_sections (htab, stub_group_size, stubs_always_before_branch);
3896
4106101c
MS		 3897 (*htab->layout_sections_again) ();
3898
5421cc6e
MS		 3899 if (htab->fix_erratum_835769)
3900 {
3901 bfd *input_bfd;
3902
3903 for (input_bfd = info->input_bfds;
3904 input_bfd != NULL; input_bfd = input_bfd->link.next)
3905 if (!_bfd_aarch64_erratum_835769_scan (input_bfd, info,
3906 &num_erratum_835769_fixes))
3907 return FALSE;
3908
4106101c
MS		 3909 _bfd_aarch64_resize_stubs (htab);
3910 (*htab->layout_sections_again) ();
3911 }
3912
3913 if (htab->fix_erratum_843419)
3914 {
3915 bfd *input_bfd;
3916
3917 for (input_bfd = info->input_bfds;
3918 input_bfd != NULL;
3919 input_bfd = input_bfd->link.next)
3920 {
3921 asection *section;
3922
3923 for (section = input_bfd->sections;
3924 section != NULL;
3925 section = section->next)
3926 if (!_bfd_aarch64_erratum_843419_scan (input_bfd, section, info))
3927 return FALSE;
3928 }
3929
3930 _bfd_aarch64_resize_stubs (htab);
3931 (*htab->layout_sections_again) ();
5421cc6e
MS		 3932 }
3933
a06ea964
NC		 3934 while (1)
3935 {
3936 bfd *input_bfd;
a06ea964 3937
9b9971aa
MS		 3938 for (input_bfd = info->input_bfds;
3939 input_bfd != NULL; input_bfd = input_bfd->link.next)
a06ea964
NC		 3940 {
3941 Elf_Internal_Shdr *symtab_hdr;
3942 asection *section;
3943 Elf_Internal_Sym *local_syms = NULL;
3944
3945 /* We'll need the symbol table in a second. */
3946 symtab_hdr = &elf_tdata (input_bfd)->symtab_hdr;
3947 if (symtab_hdr->sh_info == 0)
3948 continue;
3949
3950 /* Walk over each section attached to the input bfd. */
3951 for (section = input_bfd->sections;
3952 section != NULL; section = section->next)
3953 {
3954 Elf_Internal_Rela *internal_relocs, *irelaend, *irela;
3955
3956 /* If there aren't any relocs, then there's nothing more
3957 to do. */
3958 if ((section->flags & SEC_RELOC) == 0
3959 || section->reloc_count == 0
3960 || (section->flags & SEC_CODE) == 0)
3961 continue;
3962
3963 /* If this section is a link-once section that will be
3964 discarded, then don't create any stubs. */
3965 if (section->output_section == NULL
3966 || section->output_section->owner != output_bfd)
3967 continue;
3968
3969 /* Get the relocs. */
3970 internal_relocs
3971 = _bfd_elf_link_read_relocs (input_bfd, section, NULL,
3972 NULL, info->keep_memory);
3973 if (internal_relocs == NULL)
3974 goto error_ret_free_local;
3975
3976 /* Now examine each relocation. */
3977 irela = internal_relocs;
3978 irelaend = irela + section->reloc_count;
3979 for (; irela < irelaend; irela++)
3980 {
3981 unsigned int r_type, r_indx;
cec5225b
YZ		 3982 enum elf_aarch64_stub_type stub_type;
3983 struct elf_aarch64_stub_hash_entry *stub_entry;
a06ea964
NC		 3984 asection *sym_sec;
3985 bfd_vma sym_value;
3986 bfd_vma destination;
cec5225b 3987 struct elf_aarch64_link_hash_entry *hash;
a06ea964
NC		 3988 const char *sym_name;
3989 char *stub_name;
3990 const asection *id_sec;
3991 unsigned char st_type;
3992 bfd_size_type len;
3993
cec5225b
YZ		 3994 r_type = ELFNN_R_TYPE (irela->r_info);
3995 r_indx = ELFNN_R_SYM (irela->r_info);
a06ea964
NC		 3996
3997 if (r_type >= (unsigned int) R_AARCH64_end)
3998 {
3999 bfd_set_error (bfd_error_bad_value);
4000 error_ret_free_internal:
4001 if (elf_section_data (section)->relocs == NULL)
4002 free (internal_relocs);
4003 goto error_ret_free_local;
4004 }
4005
4006 /* Only look for stubs on unconditional branch and
4007 branch and link instructions. */
a6bb11b2
YZ		 4008 if (r_type != (unsigned int) AARCH64_R (CALL26)
4009 && r_type != (unsigned int) AARCH64_R (JUMP26))
a06ea964
NC		 4010 continue;
4011
4012 /* Now determine the call target, its name, value,
4013 section. */
4014 sym_sec = NULL;
4015 sym_value = 0;
4016 destination = 0;
4017 hash = NULL;
4018 sym_name = NULL;
4019 if (r_indx < symtab_hdr->sh_info)
4020 {
4021 /* It's a local symbol. */
4022 Elf_Internal_Sym *sym;
4023 Elf_Internal_Shdr *hdr;
4024
4025 if (local_syms == NULL)
4026 {
4027 local_syms
4028 = (Elf_Internal_Sym *) symtab_hdr->contents;
4029 if (local_syms == NULL)
4030 local_syms
4031 = bfd_elf_get_elf_syms (input_bfd, symtab_hdr,
4032 symtab_hdr->sh_info, 0,
4033 NULL, NULL, NULL);
4034 if (local_syms == NULL)
4035 goto error_ret_free_internal;
4036 }
4037
4038 sym = local_syms + r_indx;
4039 hdr = elf_elfsections (input_bfd)[sym->st_shndx];
4040 sym_sec = hdr->bfd_section;
4041 if (!sym_sec)
4042 /* This is an undefined symbol. It can never
4043 be resolved. */
4044 continue;
4045
4046 if (ELF_ST_TYPE (sym->st_info) != STT_SECTION)
4047 sym_value = sym->st_value;
4048 destination = (sym_value + irela->r_addend
4049 + sym_sec->output_offset
4050 + sym_sec->output_section->vma);
4051 st_type = ELF_ST_TYPE (sym->st_info);
4052 sym_name
4053 = bfd_elf_string_from_elf_section (input_bfd,
4054 symtab_hdr->sh_link,
4055 sym->st_name);
4056 }
4057 else
4058 {
4059 int e_indx;
4060
4061 e_indx = r_indx - symtab_hdr->sh_info;
cec5225b 4062 hash = ((struct elf_aarch64_link_hash_entry *)
a06ea964
NC		 4063 elf_sym_hashes (input_bfd)[e_indx]);
4064
4065 while (hash->root.root.type == bfd_link_hash_indirect
4066 || hash->root.root.type == bfd_link_hash_warning)
cec5225b 4067 hash = ((struct elf_aarch64_link_hash_entry *)
a06ea964
NC		 4068 hash->root.root.u.i.link);
4069
4070 if (hash->root.root.type == bfd_link_hash_defined
4071 || hash->root.root.type == bfd_link_hash_defweak)
4072 {
cec5225b
YZ		 4073 struct elf_aarch64_link_hash_table *globals =
4074 elf_aarch64_hash_table (info);
a06ea964
NC		 4075 sym_sec = hash->root.root.u.def.section;
4076 sym_value = hash->root.root.u.def.value;
4077 /* For a destination in a shared library,
4078 use the PLT stub as target address to
4079 decide whether a branch stub is
4080 needed. */
4081 if (globals->root.splt != NULL && hash != NULL
4082 && hash->root.plt.offset != (bfd_vma) - 1)
4083 {
4084 sym_sec = globals->root.splt;
4085 sym_value = hash->root.plt.offset;
4086 if (sym_sec->output_section != NULL)
4087 destination = (sym_value
4088 + sym_sec->output_offset
4089 +
4090 sym_sec->output_section->vma);
4091 }
4092 else if (sym_sec->output_section != NULL)
4093 destination = (sym_value + irela->r_addend
4094 + sym_sec->output_offset
4095 + sym_sec->output_section->vma);
4096 }
4097 else if (hash->root.root.type == bfd_link_hash_undefined
4098 || (hash->root.root.type
4099 == bfd_link_hash_undefweak))
4100 {
4101 /* For a shared library, use the PLT stub as
4102 target address to decide whether a long
4103 branch stub is needed.
4104 For absolute code, they cannot be handled. */
cec5225b
YZ		 4105 struct elf_aarch64_link_hash_table *globals =
4106 elf_aarch64_hash_table (info);
a06ea964
NC		 4107
4108 if (globals->root.splt != NULL && hash != NULL
4109 && hash->root.plt.offset != (bfd_vma) - 1)
4110 {
4111 sym_sec = globals->root.splt;
4112 sym_value = hash->root.plt.offset;
4113 if (sym_sec->output_section != NULL)
4114 destination = (sym_value
4115 + sym_sec->output_offset
4116 +
4117 sym_sec->output_section->vma);
4118 }
4119 else
4120 continue;
4121 }
4122 else
4123 {
4124 bfd_set_error (bfd_error_bad_value);
4125 goto error_ret_free_internal;
4126 }
4127 st_type = ELF_ST_TYPE (hash->root.type);
4128 sym_name = hash->root.root.root.string;
4129 }
4130
4131 /* Determine what (if any) linker stub is needed. */
9a228467
JW		 4132 stub_type = aarch64_type_of_stub (section, irela, sym_sec,
4133 st_type, destination);
a06ea964
NC		 4134 if (stub_type == aarch64_stub_none)
4135 continue;
4136
4137 /* Support for grouping stub sections. */
4138 id_sec = htab->stub_group[section->id].link_sec;
4139
4140 /* Get the name of this stub. */
cec5225b 4141 stub_name = elfNN_aarch64_stub_name (id_sec, sym_sec, hash,
a06ea964
NC		 4142 irela);
4143 if (!stub_name)
4144 goto error_ret_free_internal;
4145
4146 stub_entry =
4147 aarch64_stub_hash_lookup (&htab->stub_hash_table,
4148 stub_name, FALSE, FALSE);
4149 if (stub_entry != NULL)
4150 {
4151 /* The proper stub has already been created. */
4152 free (stub_name);
4153 continue;
4154 }
4155
ef857521
MS		 4156 stub_entry = _bfd_aarch64_add_stub_entry_in_group
4157 (stub_name, section, htab);
a06ea964
NC		 4158 if (stub_entry == NULL)
4159 {
4160 free (stub_name);
4161 goto error_ret_free_internal;
4162 }
4163
2f340668 4164 stub_entry->target_value = sym_value + irela->r_addend;
a06ea964
NC		 4165 stub_entry->target_section = sym_sec;
4166 stub_entry->stub_type = stub_type;
4167 stub_entry->h = hash;
4168 stub_entry->st_type = st_type;
4169
4170 if (sym_name == NULL)
4171 sym_name = "unnamed";
4172 len = sizeof (STUB_ENTRY_NAME) + strlen (sym_name);
4173 stub_entry->output_name = bfd_alloc (htab->stub_bfd, len);
4174 if (stub_entry->output_name == NULL)
4175 {
4176 free (stub_name);
4177 goto error_ret_free_internal;
4178 }
4179
4180 snprintf (stub_entry->output_name, len, STUB_ENTRY_NAME,
4181 sym_name);
4182
4183 stub_changed = TRUE;
4184 }
4185
4186 /* We're done with the internal relocs, free them. */
4187 if (elf_section_data (section)->relocs == NULL)
4188 free (internal_relocs);
4189 }
4190 }
4191
4192 if (!stub_changed)
4193 break;
4194
13f622ec 4195 _bfd_aarch64_resize_stubs (htab);
a06ea964
NC		 4196
4197 /* Ask the linker to do its stuff. */
4198 (*htab->layout_sections_again) ();
4199 stub_changed = FALSE;
4200 }
4201
4202 return TRUE;
4203
4204error_ret_free_local:
4205 return FALSE;
4206}
4207
4208/* Build all the stubs associated with the current output file. The
4209 stubs are kept in a hash table attached to the main linker hash
4210 table. We also set up the .plt entries for statically linked PIC
4211 functions here. This function is called via aarch64_elf_finish in the
4212 linker. */
4213
4214bfd_boolean
cec5225b 4215elfNN_aarch64_build_stubs (struct bfd_link_info *info)
a06ea964
NC		 4216{
4217 asection *stub_sec;
4218 struct bfd_hash_table *table;
cec5225b 4219 struct elf_aarch64_link_hash_table *htab;
a06ea964 4220
cec5225b 4221 htab = elf_aarch64_hash_table (info);
a06ea964
NC		 4222
4223 for (stub_sec = htab->stub_bfd->sections;
4224 stub_sec != NULL; stub_sec = stub_sec->next)
4225 {
4226 bfd_size_type size;
4227
4228 /* Ignore non-stub sections. */
4229 if (!strstr (stub_sec->name, STUB_SUFFIX))
4230 continue;
4231
4232 /* Allocate memory to hold the linker stubs. */
4233 size = stub_sec->size;
4234 stub_sec->contents = bfd_zalloc (htab->stub_bfd, size);
4235 if (stub_sec->contents == NULL && size != 0)
4236 return FALSE;
4237 stub_sec->size = 0;
61865519
MS		 4238
4239 bfd_putl32 (0x14000000 | (size >> 2), stub_sec->contents);
4240 stub_sec->size += 4;
a06ea964
NC		 4241 }
4242
4243 /* Build the stubs as directed by the stub hash table. */
4244 table = &htab->stub_hash_table;
4245 bfd_hash_traverse (table, aarch64_build_one_stub, info);
4246
4247 return TRUE;
4248}
4249
4250
4251/* Add an entry to the code/data map for section SEC. */
4252
4253static void
cec5225b 4254elfNN_aarch64_section_map_add (asection *sec, char type, bfd_vma vma)
a06ea964
NC		 4255{
4256 struct _aarch64_elf_section_data *sec_data =
cec5225b 4257 elf_aarch64_section_data (sec);
a06ea964
NC		 4258 unsigned int newidx;
4259
4260 if (sec_data->map == NULL)
4261 {
cec5225b 4262 sec_data->map = bfd_malloc (sizeof (elf_aarch64_section_map));
a06ea964
NC		 4263 sec_data->mapcount = 0;
4264 sec_data->mapsize = 1;
4265 }
4266
4267 newidx = sec_data->mapcount++;
4268
4269 if (sec_data->mapcount > sec_data->mapsize)
4270 {
4271 sec_data->mapsize *= 2;
4272 sec_data->map = bfd_realloc_or_free
cec5225b 4273 (sec_data->map, sec_data->mapsize * sizeof (elf_aarch64_section_map));
a06ea964
NC		 4274 }
4275
4276 if (sec_data->map)
4277 {
4278 sec_data->map[newidx].vma = vma;
4279 sec_data->map[newidx].type = type;
4280 }
4281}
4282
4283
4284/* Initialise maps of insn/data for input BFDs. */
4285void
cec5225b 4286bfd_elfNN_aarch64_init_maps (bfd *abfd)
a06ea964
NC		 4287{
4288 Elf_Internal_Sym *isymbuf;
4289 Elf_Internal_Shdr *hdr;
4290 unsigned int i, localsyms;
4291
4292 /* Make sure that we are dealing with an AArch64 elf binary. */
4293 if (!is_aarch64_elf (abfd))
4294 return;
4295
4296 if ((abfd->flags & DYNAMIC) != 0)
68fcca92 4297 return;
a06ea964
NC		 4298
4299 hdr = &elf_symtab_hdr (abfd);
4300 localsyms = hdr->sh_info;
4301
4302 /* Obtain a buffer full of symbols for this BFD. The hdr->sh_info field
4303 should contain the number of local symbols, which should come before any
4304 global symbols. Mapping symbols are always local. */
4305 isymbuf = bfd_elf_get_elf_syms (abfd, hdr, localsyms, 0, NULL, NULL, NULL);
4306
4307 /* No internal symbols read? Skip this BFD. */
4308 if (isymbuf == NULL)
4309 return;
4310
4311 for (i = 0; i < localsyms; i++)
4312 {
4313 Elf_Internal_Sym *isym = &isymbuf[i];
4314 asection *sec = bfd_section_from_elf_index (abfd, isym->st_shndx);
4315 const char *name;
4316
4317 if (sec != NULL && ELF_ST_BIND (isym->st_info) == STB_LOCAL)
4318 {
4319 name = bfd_elf_string_from_elf_section (abfd,
4320 hdr->sh_link,
4321 isym->st_name);
4322
4323 if (bfd_is_aarch64_special_symbol_name
4324 (name, BFD_AARCH64_SPECIAL_SYM_TYPE_MAP))
cec5225b 4325 elfNN_aarch64_section_map_add (sec, name[1], isym->st_value);
a06ea964
NC		 4326 }
4327 }
4328}
4329
4330/* Set option values needed during linking. */
4331void
cec5225b 4332bfd_elfNN_aarch64_set_options (struct bfd *output_bfd,
a06ea964
NC		 4333 struct bfd_link_info *link_info,
4334 int no_enum_warn,
68fcca92 4335 int no_wchar_warn, int pic_veneer,
4106101c
MS		 4336 int fix_erratum_835769,
4337 int fix_erratum_843419)
a06ea964 4338{
cec5225b 4339 struct elf_aarch64_link_hash_table *globals;
a06ea964 4340
cec5225b 4341 globals = elf_aarch64_hash_table (link_info);
a06ea964 4342 globals->pic_veneer = pic_veneer;
68fcca92 4343 globals->fix_erratum_835769 = fix_erratum_835769;
4106101c
MS		 4344 globals->fix_erratum_843419 = fix_erratum_843419;
4345 globals->fix_erratum_843419_adr = TRUE;
a06ea964
NC		 4346
4347 BFD_ASSERT (is_aarch64_elf (output_bfd));
4348 elf_aarch64_tdata (output_bfd)->no_enum_size_warning = no_enum_warn;
4349 elf_aarch64_tdata (output_bfd)->no_wchar_size_warning = no_wchar_warn;
4350}
4351
a06ea964
NC		 4352static bfd_vma
4353aarch64_calculate_got_entry_vma (struct elf_link_hash_entry *h,
cec5225b 4354 struct elf_aarch64_link_hash_table
a06ea964
NC		 4355 *globals, struct bfd_link_info *info,
4356 bfd_vma value, bfd *output_bfd,
4357 bfd_boolean *unresolved_reloc_p)
4358{
4359 bfd_vma off = (bfd_vma) - 1;
4360 asection *basegot = globals->root.sgot;
4361 bfd_boolean dyn = globals->root.dynamic_sections_created;
4362
4363 if (h != NULL)
4364 {
a6bb11b2 4365 BFD_ASSERT (basegot != NULL);
a06ea964
NC		 4366 off = h->got.offset;
4367 BFD_ASSERT (off != (bfd_vma) - 1);
0e1862bb
L		 4368 if (!WILL_CALL_FINISH_DYNAMIC_SYMBOL (dyn, bfd_link_pic (info), h)
4369 || (bfd_link_pic (info)
a06ea964
NC		 4370 && SYMBOL_REFERENCES_LOCAL (info, h))
4371 || (ELF_ST_VISIBILITY (h->other)
4372 && h->root.type == bfd_link_hash_undefweak))
4373 {
4374 /* This is actually a static link, or it is a -Bsymbolic link
4375 and the symbol is defined locally. We must initialize this
4376 entry in the global offset table. Since the offset must
a6bb11b2
YZ		 4377 always be a multiple of 8 (4 in the case of ILP32), we use
4378 the least significant bit to record whether we have
4379 initialized it already.
a06ea964
NC		 4380 When doing a dynamic link, we create a .rel(a).got relocation
4381 entry to initialize the value. This is done in the
4382 finish_dynamic_symbol routine. */
4383 if ((off & 1) != 0)
4384 off &= ~1;
4385 else
4386 {
cec5225b 4387 bfd_put_NN (output_bfd, value, basegot->contents + off);
a06ea964
NC		 4388 h->got.offset |= 1;
4389 }
4390 }
4391 else
4392 *unresolved_reloc_p = FALSE;
4393
4394 off = off + basegot->output_section->vma + basegot->output_offset;
4395 }
4396
4397 return off;
4398}
4399
4400/* Change R_TYPE to a more efficient access model where possible,
4401 return the new reloc type. */
4402
a6bb11b2
YZ		 4403static bfd_reloc_code_real_type
4404aarch64_tls_transition_without_check (bfd_reloc_code_real_type r_type,
a06ea964
NC		 4405 struct elf_link_hash_entry *h)
4406{
4407 bfd_boolean is_local = h == NULL;
a6bb11b2 4408
a06ea964
NC		 4409 switch (r_type)
4410 {
a6bb11b2 4411 case BFD_RELOC_AARCH64_TLSDESC_ADR_PAGE21:
ce336788 4412 case BFD_RELOC_AARCH64_TLSGD_ADR_PAGE21:
a6bb11b2
YZ		 4413 return (is_local
4414 ? BFD_RELOC_AARCH64_TLSLE_MOVW_TPREL_G1
4415 : BFD_RELOC_AARCH64_TLSIE_ADR_GOTTPREL_PAGE21);
4416
389b8029
MS		 4417 case BFD_RELOC_AARCH64_TLSDESC_ADR_PREL21:
4418 return (is_local
4419 ? BFD_RELOC_AARCH64_TLSLE_MOVW_TPREL_G0_NC
4420 : r_type);
4421
1ada945d
MS		 4422 case BFD_RELOC_AARCH64_TLSDESC_LD_PREL19:
4423 return (is_local
4424 ? BFD_RELOC_AARCH64_TLSLE_MOVW_TPREL_G1
4425 : BFD_RELOC_AARCH64_TLSIE_LD_GOTTPREL_PREL19);
4426
0484b454
RL		 4427 case BFD_RELOC_AARCH64_TLSDESC_LDR:
4428 return (is_local
4429 ? BFD_RELOC_AARCH64_TLSLE_MOVW_TPREL_G0_NC
4430 : BFD_RELOC_AARCH64_NONE);
4431
4432 case BFD_RELOC_AARCH64_TLSDESC_OFF_G0_NC:
4433 return (is_local
4434 ? BFD_RELOC_AARCH64_TLSLE_MOVW_TPREL_G1_NC
4435 : BFD_RELOC_AARCH64_TLSIE_MOVW_GOTTPREL_G0_NC);
4436
4437 case BFD_RELOC_AARCH64_TLSDESC_OFF_G1:
4438 return (is_local
4439 ? BFD_RELOC_AARCH64_TLSLE_MOVW_TPREL_G2
4440 : BFD_RELOC_AARCH64_TLSIE_MOVW_GOTTPREL_G1);
4441
a6bb11b2 4442 case BFD_RELOC_AARCH64_TLSDESC_LDNN_LO12_NC:
ce336788 4443 case BFD_RELOC_AARCH64_TLSGD_ADD_LO12_NC:
a6bb11b2
YZ		 4444 return (is_local
4445 ? BFD_RELOC_AARCH64_TLSLE_MOVW_TPREL_G0_NC
4446 : BFD_RELOC_AARCH64_TLSIE_LDNN_GOTTPREL_LO12_NC);
4447
4448 case BFD_RELOC_AARCH64_TLSIE_ADR_GOTTPREL_PAGE21:
4449 return is_local ? BFD_RELOC_AARCH64_TLSLE_MOVW_TPREL_G1 : r_type;
4450
4451 case BFD_RELOC_AARCH64_TLSIE_LDNN_GOTTPREL_LO12_NC:
4452 return is_local ? BFD_RELOC_AARCH64_TLSLE_MOVW_TPREL_G0_NC : r_type;
4453
043bf05a
MS		 4454 case BFD_RELOC_AARCH64_TLSIE_LD_GOTTPREL_PREL19:
4455 return r_type;
4456
3c12b054
MS		 4457 case BFD_RELOC_AARCH64_TLSGD_ADR_PREL21:
4458 return (is_local
4459 ? BFD_RELOC_AARCH64_TLSLE_ADD_TPREL_HI12
4460 : BFD_RELOC_AARCH64_TLSIE_LD_GOTTPREL_PREL19);
4461
0484b454 4462 case BFD_RELOC_AARCH64_TLSDESC_ADD:
a6bb11b2
YZ		 4463 case BFD_RELOC_AARCH64_TLSDESC_ADD_LO12_NC:
4464 case BFD_RELOC_AARCH64_TLSDESC_CALL:
a06ea964 4465 /* Instructions with these relocations will become NOPs. */
a6bb11b2
YZ		 4466 return BFD_RELOC_AARCH64_NONE;
4467
259364ad
JW		 4468 case BFD_RELOC_AARCH64_TLSLD_ADD_LO12_NC:
4469 case BFD_RELOC_AARCH64_TLSLD_ADR_PAGE21:
4470 case BFD_RELOC_AARCH64_TLSLD_ADR_PREL21:
4471 return is_local ? BFD_RELOC_AARCH64_NONE : r_type;
4472
ac734732
RL		 4473#if ARCH_SIZE == 64
4474 case BFD_RELOC_AARCH64_TLSGD_MOVW_G0_NC:
4475 return is_local
4476 ? BFD_RELOC_AARCH64_TLSLE_MOVW_TPREL_G1_NC
4477 : BFD_RELOC_AARCH64_TLSIE_MOVW_GOTTPREL_G0_NC;
4478
4479 case BFD_RELOC_AARCH64_TLSGD_MOVW_G1:
4480 return is_local
4481 ? BFD_RELOC_AARCH64_TLSLE_MOVW_TPREL_G2
4482 : BFD_RELOC_AARCH64_TLSIE_MOVW_GOTTPREL_G1;
4483#endif
4484
a6bb11b2
YZ		 4485 default:
4486 break;
a06ea964
NC		 4487 }
4488
4489 return r_type;
4490}
4491
4492static unsigned int
a6bb11b2 4493aarch64_reloc_got_type (bfd_reloc_code_real_type r_type)
a06ea964
NC		 4494{
4495 switch (r_type)
4496 {
a6bb11b2
YZ		 4497 case BFD_RELOC_AARCH64_ADR_GOT_PAGE:
4498 case BFD_RELOC_AARCH64_GOT_LD_PREL19:
7018c030 4499 case BFD_RELOC_AARCH64_LD32_GOTPAGE_LO14:
ce336788 4500 case BFD_RELOC_AARCH64_LD32_GOT_LO12_NC:
a2e1db00 4501 case BFD_RELOC_AARCH64_LD64_GOTOFF_LO15:
99ad26cb 4502 case BFD_RELOC_AARCH64_LD64_GOTPAGE_LO15:
ce336788 4503 case BFD_RELOC_AARCH64_LD64_GOT_LO12_NC:
dc8008f5 4504 case BFD_RELOC_AARCH64_MOVW_GOTOFF_G0_NC:
74a1bfe1 4505 case BFD_RELOC_AARCH64_MOVW_GOTOFF_G1:
a06ea964
NC		 4506 return GOT_NORMAL;
4507
ce336788 4508 case BFD_RELOC_AARCH64_TLSGD_ADD_LO12_NC:
a6bb11b2 4509 case BFD_RELOC_AARCH64_TLSGD_ADR_PAGE21:
3c12b054 4510 case BFD_RELOC_AARCH64_TLSGD_ADR_PREL21:
7ba7cfe4 4511 case BFD_RELOC_AARCH64_TLSGD_MOVW_G0_NC:
94facae3 4512 case BFD_RELOC_AARCH64_TLSGD_MOVW_G1:
73f925cc 4513 case BFD_RELOC_AARCH64_TLSLD_ADD_LO12_NC:
f69e4920 4514 case BFD_RELOC_AARCH64_TLSLD_ADR_PAGE21:
77a69ff8 4515 case BFD_RELOC_AARCH64_TLSLD_ADR_PREL21:
a06ea964
NC		 4516 return GOT_TLS_GD;
4517
0484b454 4518 case BFD_RELOC_AARCH64_TLSDESC_ADD:
a6bb11b2
YZ		 4519 case BFD_RELOC_AARCH64_TLSDESC_ADD_LO12_NC:
4520 case BFD_RELOC_AARCH64_TLSDESC_ADR_PAGE21:
389b8029 4521 case BFD_RELOC_AARCH64_TLSDESC_ADR_PREL21:
a6bb11b2 4522 case BFD_RELOC_AARCH64_TLSDESC_CALL:
a6bb11b2 4523 case BFD_RELOC_AARCH64_TLSDESC_LD32_LO12_NC:
ce336788 4524 case BFD_RELOC_AARCH64_TLSDESC_LD64_LO12_NC:
1ada945d 4525 case BFD_RELOC_AARCH64_TLSDESC_LD_PREL19:
0484b454
RL		 4526 case BFD_RELOC_AARCH64_TLSDESC_LDR:
4527 case BFD_RELOC_AARCH64_TLSDESC_OFF_G0_NC:
4528 case BFD_RELOC_AARCH64_TLSDESC_OFF_G1:
a06ea964
NC		 4529 return GOT_TLSDESC_GD;
4530
a6bb11b2 4531 case BFD_RELOC_AARCH64_TLSIE_ADR_GOTTPREL_PAGE21:
a6bb11b2 4532 case BFD_RELOC_AARCH64_TLSIE_LD32_GOTTPREL_LO12_NC:
ce336788 4533 case BFD_RELOC_AARCH64_TLSIE_LD64_GOTTPREL_LO12_NC:
043bf05a 4534 case BFD_RELOC_AARCH64_TLSIE_LD_GOTTPREL_PREL19:
3b957e5b
RL		 4535 case BFD_RELOC_AARCH64_TLSIE_MOVW_GOTTPREL_G0_NC:
4536 case BFD_RELOC_AARCH64_TLSIE_MOVW_GOTTPREL_G1:
a06ea964
NC		 4537 return GOT_TLS_IE;
4538
a6bb11b2
YZ		 4539 default:
4540 break;
a06ea964
NC		 4541 }
4542 return GOT_UNKNOWN;
4543}
4544
4545static bfd_boolean
4546aarch64_can_relax_tls (bfd *input_bfd,
4547 struct bfd_link_info *info,
a6bb11b2 4548 bfd_reloc_code_real_type r_type,
a06ea964
NC		 4549 struct elf_link_hash_entry *h,
4550 unsigned long r_symndx)
4551{
4552 unsigned int symbol_got_type;
4553 unsigned int reloc_got_type;
4554
9331eea1 4555 if (! IS_AARCH64_TLS_RELAX_RELOC (r_type))
a06ea964
NC		 4556 return FALSE;
4557
cec5225b 4558 symbol_got_type = elfNN_aarch64_symbol_got_type (h, input_bfd, r_symndx);
a06ea964
NC		 4559 reloc_got_type = aarch64_reloc_got_type (r_type);
4560
4561 if (symbol_got_type == GOT_TLS_IE && GOT_TLS_GD_ANY_P (reloc_got_type))
4562 return TRUE;
4563
0e1862bb 4564 if (bfd_link_pic (info))
a06ea964
NC		 4565 return FALSE;
4566
4567 if (h && h->root.type == bfd_link_hash_undefweak)
4568 return FALSE;
4569
4570 return TRUE;
4571}
4572
a6bb11b2
YZ		 4573/* Given the relocation code R_TYPE, return the relaxed bfd reloc
4574 enumerator. */
4575
4576static bfd_reloc_code_real_type
a06ea964
NC		 4577aarch64_tls_transition (bfd *input_bfd,
4578 struct bfd_link_info *info,
4579 unsigned int r_type,
4580 struct elf_link_hash_entry *h,
4581 unsigned long r_symndx)
4582{
a6bb11b2
YZ		 4583 bfd_reloc_code_real_type bfd_r_type
4584 = elfNN_aarch64_bfd_reloc_from_type (r_type);
a06ea964 4585
a6bb11b2
YZ		 4586 if (! aarch64_can_relax_tls (input_bfd, info, bfd_r_type, h, r_symndx))
4587 return bfd_r_type;
4588
4589 return aarch64_tls_transition_without_check (bfd_r_type, h);
a06ea964
NC		 4590}
4591
4592/* Return the base VMA address which should be subtracted from real addresses
a6bb11b2 4593 when resolving R_AARCH64_TLS_DTPREL relocation. */
a06ea964
NC		 4594
4595static bfd_vma
4596dtpoff_base (struct bfd_link_info *info)
4597{
4598 /* If tls_sec is NULL, we should have signalled an error already. */
4599 BFD_ASSERT (elf_hash_table (info)->tls_sec != NULL);
4600 return elf_hash_table (info)->tls_sec->vma;
4601}
4602
a06ea964
NC		 4603/* Return the base VMA address which should be subtracted from real addresses
4604 when resolving R_AARCH64_TLS_GOTTPREL64 relocations. */
4605
4606static bfd_vma
4607tpoff_base (struct bfd_link_info *info)
4608{
4609 struct elf_link_hash_table *htab = elf_hash_table (info);
4610
4611 /* If tls_sec is NULL, we should have signalled an error already. */
ac21917f 4612 BFD_ASSERT (htab->tls_sec != NULL);
a06ea964
NC		 4613
4614 bfd_vma base = align_power ((bfd_vma) TCB_SIZE,
4615 htab->tls_sec->alignment_power);
4616 return htab->tls_sec->vma - base;
4617}
4618
4619static bfd_vma *
4620symbol_got_offset_ref (bfd *input_bfd, struct elf_link_hash_entry *h,
4621 unsigned long r_symndx)
4622{
4623 /* Calculate the address of the GOT entry for symbol
4624 referred to in h. */
4625 if (h != NULL)
4626 return &h->got.offset;
4627 else
4628 {
4629 /* local symbol */
4630 struct elf_aarch64_local_symbol *l;
4631
cec5225b 4632 l = elf_aarch64_locals (input_bfd);
a06ea964
NC		 4633 return &l[r_symndx].got_offset;
4634 }
4635}
4636
4637static void
4638symbol_got_offset_mark (bfd *input_bfd, struct elf_link_hash_entry *h,
4639 unsigned long r_symndx)
4640{
4641 bfd_vma *p;
4642 p = symbol_got_offset_ref (input_bfd, h, r_symndx);
4643 *p |= 1;
4644}
4645
4646static int
4647symbol_got_offset_mark_p (bfd *input_bfd, struct elf_link_hash_entry *h,
4648 unsigned long r_symndx)
4649{
4650 bfd_vma value;
4651 value = * symbol_got_offset_ref (input_bfd, h, r_symndx);
4652 return value & 1;
4653}
4654
4655static bfd_vma
4656symbol_got_offset (bfd *input_bfd, struct elf_link_hash_entry *h,
4657 unsigned long r_symndx)
4658{
4659 bfd_vma value;
4660 value = * symbol_got_offset_ref (input_bfd, h, r_symndx);
4661 value &= ~1;
4662 return value;
4663}
4664
4665static bfd_vma *
4666symbol_tlsdesc_got_offset_ref (bfd *input_bfd, struct elf_link_hash_entry *h,
4667 unsigned long r_symndx)
4668{
4669 /* Calculate the address of the GOT entry for symbol
4670 referred to in h. */
4671 if (h != NULL)
4672 {
cec5225b
YZ		 4673 struct elf_aarch64_link_hash_entry *eh;
4674 eh = (struct elf_aarch64_link_hash_entry *) h;
a06ea964
NC		 4675 return &eh->tlsdesc_got_jump_table_offset;
4676 }
4677 else
4678 {
4679 /* local symbol */
4680 struct elf_aarch64_local_symbol *l;
4681
cec5225b 4682 l = elf_aarch64_locals (input_bfd);
a06ea964
NC		 4683 return &l[r_symndx].tlsdesc_got_jump_table_offset;
4684 }
4685}
4686
4687static void
4688symbol_tlsdesc_got_offset_mark (bfd *input_bfd, struct elf_link_hash_entry *h,
4689 unsigned long r_symndx)
4690{
4691 bfd_vma *p;
4692 p = symbol_tlsdesc_got_offset_ref (input_bfd, h, r_symndx);
4693 *p |= 1;
4694}
4695
4696static int
4697symbol_tlsdesc_got_offset_mark_p (bfd *input_bfd,
4698 struct elf_link_hash_entry *h,
4699 unsigned long r_symndx)
4700{
4701 bfd_vma value;
4702 value = * symbol_tlsdesc_got_offset_ref (input_bfd, h, r_symndx);
4703 return value & 1;
4704}
4705
4706static bfd_vma
4707symbol_tlsdesc_got_offset (bfd *input_bfd, struct elf_link_hash_entry *h,
4708 unsigned long r_symndx)
4709{
4710 bfd_vma value;
4711 value = * symbol_tlsdesc_got_offset_ref (input_bfd, h, r_symndx);
4712 value &= ~1;
4713 return value;
4714}
4715
68fcca92
JW		 4716/* Data for make_branch_to_erratum_835769_stub(). */
4717
4718struct erratum_835769_branch_to_stub_data
4719{
4106101c 4720 struct bfd_link_info *info;
68fcca92
JW		 4721 asection *output_section;
4722 bfd_byte *contents;
4723};
4724
4725/* Helper to insert branches to erratum 835769 stubs in the right
4726 places for a particular section. */
4727
4728static bfd_boolean
4729make_branch_to_erratum_835769_stub (struct bfd_hash_entry *gen_entry,
4730 void *in_arg)
4731{
4732 struct elf_aarch64_stub_hash_entry *stub_entry;
4733 struct erratum_835769_branch_to_stub_data *data;
4734 bfd_byte *contents;
4735 unsigned long branch_insn = 0;
4736 bfd_vma veneered_insn_loc, veneer_entry_loc;
4737 bfd_signed_vma branch_offset;
4738 unsigned int target;
4739 bfd *abfd;
4740
4741 stub_entry = (struct elf_aarch64_stub_hash_entry *) gen_entry;
4742 data = (struct erratum_835769_branch_to_stub_data *) in_arg;
4743
4744 if (stub_entry->target_section != data->output_section
4745 || stub_entry->stub_type != aarch64_stub_erratum_835769_veneer)
4746 return TRUE;
4747
4748 contents = data->contents;
4749 veneered_insn_loc = stub_entry->target_section->output_section->vma
4750 + stub_entry->target_section->output_offset
4751 + stub_entry->target_value;
4752 veneer_entry_loc = stub_entry->stub_sec->output_section->vma
4753 + stub_entry->stub_sec->output_offset
4754 + stub_entry->stub_offset;
4755 branch_offset = veneer_entry_loc - veneered_insn_loc;
4756
4757 abfd = stub_entry->target_section->owner;
4758 if (!aarch64_valid_branch_p (veneer_entry_loc, veneered_insn_loc))
4759 (*_bfd_error_handler)
4760 (_("%B: error: Erratum 835769 stub out "
4761 "of range (input file too large)"), abfd);
4762
4763 target = stub_entry->target_value;
4764 branch_insn = 0x14000000;
4765 branch_offset >>= 2;
4766 branch_offset &= 0x3ffffff;
4767 branch_insn |= branch_offset;
4768 bfd_putl32 (branch_insn, &contents[target]);
4769
4770 return TRUE;
4771}
4772
4106101c
MS		 4773
4774static bfd_boolean
4775_bfd_aarch64_erratum_843419_branch_to_stub (struct bfd_hash_entry *gen_entry,
4776 void *in_arg)
4777{
4778 struct elf_aarch64_stub_hash_entry *stub_entry
4779 = (struct elf_aarch64_stub_hash_entry *) gen_entry;
4780 struct erratum_835769_branch_to_stub_data *data
4781 = (struct erratum_835769_branch_to_stub_data *) in_arg;
4782 struct bfd_link_info *info;
4783 struct elf_aarch64_link_hash_table *htab;
4784 bfd_byte *contents;
4785 asection *section;
4786 bfd *abfd;
4787 bfd_vma place;
4788 uint32_t insn;
4789
4790 info = data->info;
4791 contents = data->contents;
4792 section = data->output_section;
4793
4794 htab = elf_aarch64_hash_table (info);
4795
4796 if (stub_entry->target_section != section
4797 || stub_entry->stub_type != aarch64_stub_erratum_843419_veneer)
4798 return TRUE;
4799
4800 insn = bfd_getl32 (contents + stub_entry->target_value);
4801 bfd_putl32 (insn,
4802 stub_entry->stub_sec->contents + stub_entry->stub_offset);
4803
4804 place = (section->output_section->vma + section->output_offset
4805 + stub_entry->adrp_offset);
4806 insn = bfd_getl32 (contents + stub_entry->adrp_offset);
4807
4808 if ((insn & AARCH64_ADRP_OP_MASK) != AARCH64_ADRP_OP)
4809 abort ();
4810
4811 bfd_signed_vma imm =
4812 (_bfd_aarch64_sign_extend
4813 ((bfd_vma) _bfd_aarch64_decode_adrp_imm (insn) << 12, 33)
4814 - (place & 0xfff));
4815
4816 if (htab->fix_erratum_843419_adr
4817 && (imm >= AARCH64_MIN_ADRP_IMM && imm <= AARCH64_MAX_ADRP_IMM))
4818 {
4819 insn = (_bfd_aarch64_reencode_adr_imm (AARCH64_ADR_OP, imm)
4820 | AARCH64_RT (insn));
4821 bfd_putl32 (insn, contents + stub_entry->adrp_offset);
4822 }
4823 else
4824 {
4825 bfd_vma veneered_insn_loc;
4826 bfd_vma veneer_entry_loc;
4827 bfd_signed_vma branch_offset;
4828 uint32_t branch_insn;
4829
4830 veneered_insn_loc = stub_entry->target_section->output_section->vma
4831 + stub_entry->target_section->output_offset
4832 + stub_entry->target_value;
4833 veneer_entry_loc = stub_entry->stub_sec->output_section->vma
4834 + stub_entry->stub_sec->output_offset
4835 + stub_entry->stub_offset;
4836 branch_offset = veneer_entry_loc - veneered_insn_loc;
4837
4838 abfd = stub_entry->target_section->owner;
4839 if (!aarch64_valid_branch_p (veneer_entry_loc, veneered_insn_loc))
4840 (*_bfd_error_handler)
4841 (_("%B: error: Erratum 843419 stub out "
4842 "of range (input file too large)"), abfd);
4843
4844 branch_insn = 0x14000000;
4845 branch_offset >>= 2;
4846 branch_offset &= 0x3ffffff;
4847 branch_insn |= branch_offset;
4848 bfd_putl32 (branch_insn, contents + stub_entry->target_value);
4849 }
4850 return TRUE;
4851}
4852
4853
68fcca92
JW		 4854static bfd_boolean
4855elfNN_aarch64_write_section (bfd *output_bfd ATTRIBUTE_UNUSED,
4856 struct bfd_link_info *link_info,
4857 asection *sec,
4858 bfd_byte *contents)
4859
4860{
4861 struct elf_aarch64_link_hash_table *globals =
f872121a 4862 elf_aarch64_hash_table (link_info);
68fcca92
JW		 4863
4864 if (globals == NULL)
4865 return FALSE;
4866
4867 /* Fix code to point to erratum 835769 stubs. */
4868 if (globals->fix_erratum_835769)
4869 {
4870 struct erratum_835769_branch_to_stub_data data;
4871
4106101c 4872 data.info = link_info;
68fcca92
JW		 4873 data.output_section = sec;
4874 data.contents = contents;
4875 bfd_hash_traverse (&globals->stub_hash_table,
4876 make_branch_to_erratum_835769_stub, &data);
4877 }
4878
4106101c
MS		 4879 if (globals->fix_erratum_843419)
4880 {
4881 struct erratum_835769_branch_to_stub_data data;
4882
4883 data.info = link_info;
4884 data.output_section = sec;
4885 data.contents = contents;
4886 bfd_hash_traverse (&globals->stub_hash_table,
4887 _bfd_aarch64_erratum_843419_branch_to_stub, &data);
4888 }
4889
68fcca92
JW		 4890 return FALSE;
4891}
4892
a06ea964
NC		 4893/* Perform a relocation as part of a final link. */
4894static bfd_reloc_status_type
cec5225b 4895elfNN_aarch64_final_link_relocate (reloc_howto_type *howto,
a06ea964
NC		 4896 bfd *input_bfd,
4897 bfd *output_bfd,
4898 asection *input_section,
4899 bfd_byte *contents,
4900 Elf_Internal_Rela *rel,
4901 bfd_vma value,
4902 struct bfd_link_info *info,
4903 asection *sym_sec,
4904 struct elf_link_hash_entry *h,
4905 bfd_boolean *unresolved_reloc_p,
4906 bfd_boolean save_addend,
1419bbe5
WN		 4907 bfd_vma *saved_addend,
4908 Elf_Internal_Sym *sym)
a06ea964 4909{
1419bbe5 4910 Elf_Internal_Shdr *symtab_hdr;
a06ea964 4911 unsigned int r_type = howto->type;
a6bb11b2
YZ		 4912 bfd_reloc_code_real_type bfd_r_type
4913 = elfNN_aarch64_bfd_reloc_from_howto (howto);
4914 bfd_reloc_code_real_type new_bfd_r_type;
a06ea964
NC		 4915 unsigned long r_symndx;
4916 bfd_byte *hit_data = contents + rel->r_offset;
b53b1bed 4917 bfd_vma place, off;
a06ea964 4918 bfd_signed_vma signed_addend;
cec5225b 4919 struct elf_aarch64_link_hash_table *globals;
a06ea964 4920 bfd_boolean weak_undef_p;
b53b1bed 4921 asection *base_got;
a06ea964 4922
cec5225b 4923 globals = elf_aarch64_hash_table (info);
a06ea964 4924
1419bbe5
WN		 4925 symtab_hdr = &elf_symtab_hdr (input_bfd);
4926
a06ea964
NC		 4927 BFD_ASSERT (is_aarch64_elf (input_bfd));
4928
cec5225b 4929 r_symndx = ELFNN_R_SYM (rel->r_info);
a06ea964
NC		 4930
4931 /* It is possible to have linker relaxations on some TLS access
4932 models. Update our information here. */
a6bb11b2
YZ		 4933 new_bfd_r_type = aarch64_tls_transition (input_bfd, info, r_type, h, r_symndx);
4934 if (new_bfd_r_type != bfd_r_type)
4935 {
4936 bfd_r_type = new_bfd_r_type;
4937 howto = elfNN_aarch64_howto_from_bfd_reloc (bfd_r_type);
4938 BFD_ASSERT (howto != NULL);
4939 r_type = howto->type;
4940 }
a06ea964
NC		 4941
4942 place = input_section->output_section->vma
4943 + input_section->output_offset + rel->r_offset;
4944
4945 /* Get addend, accumulating the addend for consecutive relocs
4946 which refer to the same offset. */
4947 signed_addend = saved_addend ? *saved_addend : 0;
4948 signed_addend += rel->r_addend;
4949
4950 weak_undef_p = (h ? h->root.type == bfd_link_hash_undefweak
4951 : bfd_is_und_section (sym_sec));
a6bb11b2 4952
1419bbe5
WN		 4953 /* Since STT_GNU_IFUNC symbol must go through PLT, we handle
4954 it here if it is defined in a non-shared object. */
4955 if (h != NULL
4956 && h->type == STT_GNU_IFUNC
4957 && h->def_regular)
4958 {
4959 asection *plt;
4960 const char *name;
99ad26cb 4961 bfd_vma addend = 0;
1419bbe5
WN		 4962
4963 if ((input_section->flags & SEC_ALLOC) == 0
4964 || h->plt.offset == (bfd_vma) -1)
4965 abort ();
4966
4967 /* STT_GNU_IFUNC symbol must go through PLT. */
4968 plt = globals->root.splt ? globals->root.splt : globals->root.iplt;
4969 value = (plt->output_section->vma + plt->output_offset + h->plt.offset);
4970
4971 switch (bfd_r_type)
4972 {
4973 default:
4974 if (h->root.root.string)
4975 name = h->root.root.string;
4976 else
4977 name = bfd_elf_sym_name (input_bfd, symtab_hdr, sym,
4978 NULL);
4979 (*_bfd_error_handler)
4980 (_("%B: relocation %s against STT_GNU_IFUNC "
4981 "symbol `%s' isn't handled by %s"), input_bfd,
4982 howto->name, name, __FUNCTION__);
4983 bfd_set_error (bfd_error_bad_value);
4984 return FALSE;
4985
30bdf5c8
RL		 4986#if ARCH_SIZE == 64
4987 case BFD_RELOC_AARCH64_32:
4988#endif
1419bbe5
WN		 4989 case BFD_RELOC_AARCH64_NN:
4990 if (rel->r_addend != 0)
4991 {
4992 if (h->root.root.string)
4993 name = h->root.root.string;
4994 else
4995 name = bfd_elf_sym_name (input_bfd, symtab_hdr,
4996 sym, NULL);
4997 (*_bfd_error_handler)
4998 (_("%B: relocation %s against STT_GNU_IFUNC "
4999 "symbol `%s' has non-zero addend: %d"),
5000 input_bfd, howto->name, name, rel->r_addend);
5001 bfd_set_error (bfd_error_bad_value);
5002 return FALSE;
5003 }
5004
5005 /* Generate dynamic relocation only when there is a
5006 non-GOT reference in a shared object. */
0e1862bb 5007 if (bfd_link_pic (info) && h->non_got_ref)
1419bbe5
WN		 5008 {
5009 Elf_Internal_Rela outrel;
5010 asection *sreloc;
5011
5012 /* Need a dynamic relocation to get the real function
5013 address. */
5014 outrel.r_offset = _bfd_elf_section_offset (output_bfd,
5015 info,
5016 input_section,
5017 rel->r_offset);
5018 if (outrel.r_offset == (bfd_vma) -1
5019 || outrel.r_offset == (bfd_vma) -2)
5020 abort ();
5021
5022 outrel.r_offset += (input_section->output_section->vma
5023 + input_section->output_offset);
5024
5025 if (h->dynindx == -1
5026 || h->forced_local
0e1862bb 5027 || bfd_link_executable (info))
1419bbe5
WN		 5028 {
5029 /* This symbol is resolved locally. */
5030 outrel.r_info = ELFNN_R_INFO (0, AARCH64_R (IRELATIVE));
5031 outrel.r_addend = (h->root.u.def.value
5032 + h->root.u.def.section->output_section->vma
5033 + h->root.u.def.section->output_offset);
5034 }
5035 else
5036 {
5037 outrel.r_info = ELFNN_R_INFO (h->dynindx, r_type);
5038 outrel.r_addend = 0;
5039 }
5040
5041 sreloc = globals->root.irelifunc;
5042 elf_append_rela (output_bfd, sreloc, &outrel);
5043
5044 /* If this reloc is against an external symbol, we
5045 do not want to fiddle with the addend. Otherwise,
5046 we need to include the symbol value so that it
5047 becomes an addend for the dynamic reloc. For an
5048 internal symbol, we have updated addend. */
5049 return bfd_reloc_ok;
5050 }
5051 /* FALLTHROUGH */
1419bbe5 5052 case BFD_RELOC_AARCH64_CALL26:
ce336788 5053 case BFD_RELOC_AARCH64_JUMP26:
1419bbe5
WN		 5054 value = _bfd_aarch64_elf_resolve_relocation (bfd_r_type, place, value,
5055 signed_addend,
5056 weak_undef_p);
5057 return _bfd_aarch64_elf_put_addend (input_bfd, hit_data, bfd_r_type,
5058 howto, value);
1419bbe5
WN		 5059 case BFD_RELOC_AARCH64_ADR_GOT_PAGE:
5060 case BFD_RELOC_AARCH64_GOT_LD_PREL19:
7018c030 5061 case BFD_RELOC_AARCH64_LD32_GOTPAGE_LO14:
ce336788 5062 case BFD_RELOC_AARCH64_LD32_GOT_LO12_NC:
99ad26cb 5063 case BFD_RELOC_AARCH64_LD64_GOTPAGE_LO15:
dc8008f5 5064 case BFD_RELOC_AARCH64_MOVW_GOTOFF_G0_NC:
74a1bfe1 5065 case BFD_RELOC_AARCH64_MOVW_GOTOFF_G1:
a2e1db00 5066 case BFD_RELOC_AARCH64_LD64_GOTOFF_LO15:
ce336788 5067 case BFD_RELOC_AARCH64_LD64_GOT_LO12_NC:
1419bbe5
WN		 5068 base_got = globals->root.sgot;
5069 off = h->got.offset;
5070
5071 if (base_got == NULL)
5072 abort ();
5073
5074 if (off == (bfd_vma) -1)
5075 {
5076 bfd_vma plt_index;
5077
5078 /* We can't use h->got.offset here to save state, or
5079 even just remember the offset, as finish_dynamic_symbol
5080 would use that as offset into .got. */
5081
5082 if (globals->root.splt != NULL)
5083 {
b1ee0cc4
WN		 5084 plt_index = ((h->plt.offset - globals->plt_header_size) /
5085 globals->plt_entry_size);
1419bbe5
WN		 5086 off = (plt_index + 3) * GOT_ENTRY_SIZE;
5087 base_got = globals->root.sgotplt;
5088 }
5089 else
5090 {
5091 plt_index = h->plt.offset / globals->plt_entry_size;
5092 off = plt_index * GOT_ENTRY_SIZE;
5093 base_got = globals->root.igotplt;
5094 }
5095
5096 if (h->dynindx == -1
5097 || h->forced_local
5098 || info->symbolic)
5099 {
5100 /* This references the local definition. We must
5101 initialize this entry in the global offset table.
5102 Since the offset must always be a multiple of 8,
5103 we use the least significant bit to record
5104 whether we have initialized it already.
5105
5106 When doing a dynamic link, we create a .rela.got
5107 relocation entry to initialize the value. This
5108 is done in the finish_dynamic_symbol routine. */
5109 if ((off & 1) != 0)
5110 off &= ~1;
5111 else
5112 {
5113 bfd_put_NN (output_bfd, value,
5114 base_got->contents + off);
5115 /* Note that this is harmless as -1 | 1 still is -1. */
5116 h->got.offset |= 1;
5117 }
5118 }
5119 value = (base_got->output_section->vma
5120 + base_got->output_offset + off);
5121 }
5122 else
5123 value = aarch64_calculate_got_entry_vma (h, globals, info,
5124 value, output_bfd,
5125 unresolved_reloc_p);
a0becb89
RL		 5126
5127 switch (bfd_r_type)
5128 {
5129 case BFD_RELOC_AARCH64_LD32_GOTPAGE_LO14:
5130 case BFD_RELOC_AARCH64_LD64_GOTPAGE_LO15:
5131 addend = (globals->root.sgot->output_section->vma
5132 + globals->root.sgot->output_offset);
5133 break;
dc8008f5 5134 case BFD_RELOC_AARCH64_MOVW_GOTOFF_G0_NC:
74a1bfe1 5135 case BFD_RELOC_AARCH64_MOVW_GOTOFF_G1:
a2e1db00
RL		 5136 case BFD_RELOC_AARCH64_LD64_GOTOFF_LO15:
5137 value = (value - globals->root.sgot->output_section->vma
5138 - globals->root.sgot->output_offset);
a0becb89
RL		 5139 default:
5140 break;
5141 }
5142
1419bbe5 5143 value = _bfd_aarch64_elf_resolve_relocation (bfd_r_type, place, value,
99ad26cb 5144 addend, weak_undef_p);
1419bbe5 5145 return _bfd_aarch64_elf_put_addend (input_bfd, hit_data, bfd_r_type, howto, value);
1419bbe5 5146 case BFD_RELOC_AARCH64_ADD_LO12:
ce336788 5147 case BFD_RELOC_AARCH64_ADR_HI21_PCREL:
1419bbe5
WN		 5148 break;
5149 }
5150 }
5151
a6bb11b2 5152 switch (bfd_r_type)
a06ea964 5153 {
a6bb11b2 5154 case BFD_RELOC_AARCH64_NONE:
0484b454 5155 case BFD_RELOC_AARCH64_TLSDESC_ADD:
a6bb11b2 5156 case BFD_RELOC_AARCH64_TLSDESC_CALL:
0484b454 5157 case BFD_RELOC_AARCH64_TLSDESC_LDR:
a06ea964
NC		 5158 *unresolved_reloc_p = FALSE;
5159 return bfd_reloc_ok;
5160
30bdf5c8
RL		 5161#if ARCH_SIZE == 64
5162 case BFD_RELOC_AARCH64_32:
5163#endif
a6bb11b2 5164 case BFD_RELOC_AARCH64_NN:
a06ea964
NC		 5165
5166 /* When generating a shared object or relocatable executable, these
5167 relocations are copied into the output file to be resolved at
5168 run time. */
0e1862bb
L		 5169 if (((bfd_link_pic (info) == TRUE)
5170 || globals->root.is_relocatable_executable)
a06ea964
NC		 5171 && (input_section->flags & SEC_ALLOC)
5172 && (h == NULL
5173 || ELF_ST_VISIBILITY (h->other) == STV_DEFAULT
5174 || h->root.type != bfd_link_hash_undefweak))
5175 {
5176 Elf_Internal_Rela outrel;
5177 bfd_byte *loc;
5178 bfd_boolean skip, relocate;
5179 asection *sreloc;
5180
5181 *unresolved_reloc_p = FALSE;
5182
a06ea964
NC		 5183 skip = FALSE;
5184 relocate = FALSE;
5185
5186 outrel.r_addend = signed_addend;
5187 outrel.r_offset =
5188 _bfd_elf_section_offset (output_bfd, info, input_section,
5189 rel->r_offset);
5190 if (outrel.r_offset == (bfd_vma) - 1)
5191 skip = TRUE;
5192 else if (outrel.r_offset == (bfd_vma) - 2)
5193 {
5194 skip = TRUE;
5195 relocate = TRUE;
5196 }
5197
5198 outrel.r_offset += (input_section->output_section->vma
5199 + input_section->output_offset);
5200
5201 if (skip)
5202 memset (&outrel, 0, sizeof outrel);
5203 else if (h != NULL
5204 && h->dynindx != -1
0e1862bb
L		 5205 && (!bfd_link_pic (info)
5206 || !SYMBOLIC_BIND (info, h)
5207 || !h->def_regular))
cec5225b 5208 outrel.r_info = ELFNN_R_INFO (h->dynindx, r_type);
a06ea964
NC		 5209 else
5210 {
5211 int symbol;
5212
5213 /* On SVR4-ish systems, the dynamic loader cannot
5214 relocate the text and data segments independently,
5215 so the symbol does not matter. */
5216 symbol = 0;
a6bb11b2 5217 outrel.r_info = ELFNN_R_INFO (symbol, AARCH64_R (RELATIVE));
a06ea964
NC		 5218 outrel.r_addend += value;
5219 }
5220
1419bbe5
WN		 5221 sreloc = elf_section_data (input_section)->sreloc;
5222 if (sreloc == NULL || sreloc->contents == NULL)
5223 return bfd_reloc_notsupported;
5224
5225 loc = sreloc->contents + sreloc->reloc_count++ * RELOC_SIZE (globals);
cec5225b 5226 bfd_elfNN_swap_reloca_out (output_bfd, &outrel, loc);
a06ea964 5227
1419bbe5 5228 if (sreloc->reloc_count * RELOC_SIZE (globals) > sreloc->size)
a06ea964
NC		 5229 {
5230 /* Sanity to check that we have previously allocated
5231 sufficient space in the relocation section for the
5232 number of relocations we actually want to emit. */
5233 abort ();
5234 }
5235
5236 /* If this reloc is against an external symbol, we do not want to
5237 fiddle with the addend. Otherwise, we need to include the symbol
5238 value so that it becomes an addend for the dynamic reloc. */
5239 if (!relocate)
5240 return bfd_reloc_ok;
5241
5242 return _bfd_final_link_relocate (howto, input_bfd, input_section,
5243 contents, rel->r_offset, value,
5244 signed_addend);
5245 }
5246 else
5247 value += signed_addend;
5248 break;
5249
a6bb11b2 5250 case BFD_RELOC_AARCH64_CALL26:
ce336788 5251 case BFD_RELOC_AARCH64_JUMP26:
a06ea964
NC		 5252 {
5253 asection *splt = globals->root.splt;
5254 bfd_boolean via_plt_p =
5255 splt != NULL && h != NULL && h->plt.offset != (bfd_vma) - 1;
5256
5257 /* A call to an undefined weak symbol is converted to a jump to
5258 the next instruction unless a PLT entry will be created.
5259 The jump to the next instruction is optimized as a NOP.
5260 Do the same for local undefined symbols. */
5261 if (weak_undef_p && ! via_plt_p)
5262 {
5263 bfd_putl32 (INSN_NOP, hit_data);
5264 return bfd_reloc_ok;
5265 }
5266
5267 /* If the call goes through a PLT entry, make sure to
5268 check distance to the right destination address. */
5269 if (via_plt_p)
07f9ddfe
JW		 5270 value = (splt->output_section->vma
5271 + splt->output_offset + h->plt.offset);
5272
5273 /* Check if a stub has to be inserted because the destination
5274 is too far away. */
5275 struct elf_aarch64_stub_hash_entry *stub_entry = NULL;
2f340668
JW		 5276
5277 /* If the branch destination is directed to plt stub, "value" will be
5278 the final destination, otherwise we should plus signed_addend, it may
5279 contain non-zero value, for example call to local function symbol
5280 which are turned into "sec_sym + sec_off", and sec_off is kept in
5281 signed_addend. */
5282 if (! aarch64_valid_branch_p (via_plt_p ? value : value + signed_addend,
5283 place))
07f9ddfe
JW		 5284 /* The target is out of reach, so redirect the branch to
5285 the local stub for this function. */
5286 stub_entry = elfNN_aarch64_get_stub_entry (input_section, sym_sec, h,
5287 rel, globals);
5288 if (stub_entry != NULL)
2f340668
JW		 5289 {
5290 value = (stub_entry->stub_offset
5291 + stub_entry->stub_sec->output_offset
5292 + stub_entry->stub_sec->output_section->vma);
5293
5294 /* We have redirected the destination to stub entry address,
5295 so ignore any addend record in the original rela entry. */
5296 signed_addend = 0;
5297 }
a06ea964 5298 }
caed7120
YZ		 5299 value = _bfd_aarch64_elf_resolve_relocation (bfd_r_type, place, value,
5300 signed_addend, weak_undef_p);
07f9ddfe 5301 *unresolved_reloc_p = FALSE;
a06ea964
NC		 5302 break;
5303
dcbd20eb
JW		 5304 case BFD_RELOC_AARCH64_16_PCREL:
5305 case BFD_RELOC_AARCH64_32_PCREL:
5306 case BFD_RELOC_AARCH64_64_PCREL:
ce336788
JW		 5307 case BFD_RELOC_AARCH64_ADR_HI21_NC_PCREL:
5308 case BFD_RELOC_AARCH64_ADR_HI21_PCREL:
5309 case BFD_RELOC_AARCH64_ADR_LO21_PCREL:
5310 case BFD_RELOC_AARCH64_LD_LO19_PCREL:
0e1862bb 5311 if (bfd_link_pic (info)
dcbd20eb
JW		 5312 && (input_section->flags & SEC_ALLOC) != 0
5313 && (input_section->flags & SEC_READONLY) != 0
5314 && h != NULL
5315 && !h->def_regular)
5316 {
5317 int howto_index = bfd_r_type - BFD_RELOC_AARCH64_RELOC_START;
5318
5319 (*_bfd_error_handler)
5320 (_("%B: relocation %s against external symbol `%s' can not be used"
5321 " when making a shared object; recompile with -fPIC"),
5322 input_bfd, elfNN_aarch64_howto_table[howto_index].name,
5323 h->root.root.string);
5324 bfd_set_error (bfd_error_bad_value);
5325 return FALSE;
5326 }
5327
a6bb11b2 5328 case BFD_RELOC_AARCH64_16:
a6bb11b2 5329 case BFD_RELOC_AARCH64_ADD_LO12:
a6bb11b2 5330 case BFD_RELOC_AARCH64_BRANCH19:
ce336788 5331 case BFD_RELOC_AARCH64_LDST128_LO12:
a6bb11b2
YZ		 5332 case BFD_RELOC_AARCH64_LDST16_LO12:
5333 case BFD_RELOC_AARCH64_LDST32_LO12:
5334 case BFD_RELOC_AARCH64_LDST64_LO12:
ce336788 5335 case BFD_RELOC_AARCH64_LDST8_LO12:
a6bb11b2
YZ		 5336 case BFD_RELOC_AARCH64_MOVW_G0:
5337 case BFD_RELOC_AARCH64_MOVW_G0_NC:
ce336788 5338 case BFD_RELOC_AARCH64_MOVW_G0_S:
a6bb11b2
YZ		 5339 case BFD_RELOC_AARCH64_MOVW_G1:
5340 case BFD_RELOC_AARCH64_MOVW_G1_NC:
ce336788 5341 case BFD_RELOC_AARCH64_MOVW_G1_S:
a6bb11b2
YZ		 5342 case BFD_RELOC_AARCH64_MOVW_G2:
5343 case BFD_RELOC_AARCH64_MOVW_G2_NC:
ce336788 5344 case BFD_RELOC_AARCH64_MOVW_G2_S:
a6bb11b2 5345 case BFD_RELOC_AARCH64_MOVW_G3:
a6bb11b2 5346 case BFD_RELOC_AARCH64_TSTBR14:
caed7120
YZ		 5347 value = _bfd_aarch64_elf_resolve_relocation (bfd_r_type, place, value,
5348 signed_addend, weak_undef_p);
a06ea964
NC		 5349 break;
5350
a6bb11b2
YZ		 5351 case BFD_RELOC_AARCH64_ADR_GOT_PAGE:
5352 case BFD_RELOC_AARCH64_GOT_LD_PREL19:
7018c030 5353 case BFD_RELOC_AARCH64_LD32_GOTPAGE_LO14:
ce336788 5354 case BFD_RELOC_AARCH64_LD32_GOT_LO12_NC:
99ad26cb 5355 case BFD_RELOC_AARCH64_LD64_GOTPAGE_LO15:
ce336788 5356 case BFD_RELOC_AARCH64_LD64_GOT_LO12_NC:
a06ea964
NC		 5357 if (globals->root.sgot == NULL)
5358 BFD_ASSERT (h != NULL);
5359
5360 if (h != NULL)
5361 {
99ad26cb 5362 bfd_vma addend = 0;
a06ea964
NC		 5363 value = aarch64_calculate_got_entry_vma (h, globals, info, value,
5364 output_bfd,
5365 unresolved_reloc_p);
7018c030
JW		 5366 if (bfd_r_type == BFD_RELOC_AARCH64_LD64_GOTPAGE_LO15
5367 || bfd_r_type == BFD_RELOC_AARCH64_LD32_GOTPAGE_LO14)
99ad26cb
JW		 5368 addend = (globals->root.sgot->output_section->vma
5369 + globals->root.sgot->output_offset);
caed7120 5370 value = _bfd_aarch64_elf_resolve_relocation (bfd_r_type, place, value,
99ad26cb 5371 addend, weak_undef_p);
a06ea964 5372 }
b53b1bed
JW		 5373 else
5374 {
99ad26cb 5375 bfd_vma addend = 0;
b53b1bed
JW		 5376 struct elf_aarch64_local_symbol *locals
5377 = elf_aarch64_locals (input_bfd);
5378
5379 if (locals == NULL)
5380 {
5381 int howto_index = bfd_r_type - BFD_RELOC_AARCH64_RELOC_START;
5382 (*_bfd_error_handler)
5383 (_("%B: Local symbol descriptor table be NULL when applying "
5384 "relocation %s against local symbol"),
5385 input_bfd, elfNN_aarch64_howto_table[howto_index].name);
5386 abort ();
5387 }
5388
5389 off = symbol_got_offset (input_bfd, h, r_symndx);
5390 base_got = globals->root.sgot;
5391 bfd_vma got_entry_addr = (base_got->output_section->vma
5392 + base_got->output_offset + off);
5393
5394 if (!symbol_got_offset_mark_p (input_bfd, h, r_symndx))
5395 {
5396 bfd_put_64 (output_bfd, value, base_got->contents + off);
5397
0e1862bb 5398 if (bfd_link_pic (info))
b53b1bed
JW		 5399 {
5400 asection *s;
5401 Elf_Internal_Rela outrel;
5402
5403 /* For local symbol, we have done absolute relocation in static
5404 linking stageh. While for share library, we need to update
5405 the content of GOT entry according to the share objects
5406 loading base address. So we need to generate a
5407 R_AARCH64_RELATIVE reloc for dynamic linker. */
5408 s = globals->root.srelgot;
5409 if (s == NULL)
5410 abort ();
5411
5412 outrel.r_offset = got_entry_addr;
5413 outrel.r_info = ELFNN_R_INFO (0, AARCH64_R (RELATIVE));
5414 outrel.r_addend = value;
5415 elf_append_rela (output_bfd, s, &outrel);
5416 }
5417
5418 symbol_got_offset_mark (input_bfd, h, r_symndx);
5419 }
5420
5421 /* Update the relocation value to GOT entry addr as we have transformed
5422 the direct data access into indirect data access through GOT. */
5423 value = got_entry_addr;
99ad26cb 5424
7018c030
JW		 5425 if (bfd_r_type == BFD_RELOC_AARCH64_LD64_GOTPAGE_LO15
5426 || bfd_r_type == BFD_RELOC_AARCH64_LD32_GOTPAGE_LO14)
99ad26cb
JW		 5427 addend = base_got->output_section->vma + base_got->output_offset;
5428
5429 value = _bfd_aarch64_elf_resolve_relocation (bfd_r_type, place, value,
5430 addend, weak_undef_p);
b53b1bed
JW		 5431 }
5432
a06ea964
NC		 5433 break;
5434
a2e1db00 5435 case BFD_RELOC_AARCH64_LD64_GOTOFF_LO15:
dc8008f5 5436 case BFD_RELOC_AARCH64_MOVW_GOTOFF_G0_NC:
74a1bfe1 5437 case BFD_RELOC_AARCH64_MOVW_GOTOFF_G1:
a2e1db00
RL		 5438 if (h != NULL)
5439 value = aarch64_calculate_got_entry_vma (h, globals, info, value,
5440 output_bfd,
5441 unresolved_reloc_p);
5442 else
5443 {
5444 struct elf_aarch64_local_symbol *locals
5445 = elf_aarch64_locals (input_bfd);
5446
5447 if (locals == NULL)
5448 {
5449 int howto_index = bfd_r_type - BFD_RELOC_AARCH64_RELOC_START;
5450 (*_bfd_error_handler)
5451 (_("%B: Local symbol descriptor table be NULL when applying "
5452 "relocation %s against local symbol"),
5453 input_bfd, elfNN_aarch64_howto_table[howto_index].name);
5454 abort ();
5455 }
5456
5457 off = symbol_got_offset (input_bfd, h, r_symndx);
5458 base_got = globals->root.sgot;
5459 if (base_got == NULL)
5460 abort ();
5461
5462 bfd_vma got_entry_addr = (base_got->output_section->vma
5463 + base_got->output_offset + off);
5464
5465 if (!symbol_got_offset_mark_p (input_bfd, h, r_symndx))
5466 {
5467 bfd_put_64 (output_bfd, value, base_got->contents + off);
5468
5469 if (bfd_link_pic (info))
5470 {
5471 asection *s;
5472 Elf_Internal_Rela outrel;
5473
5474 /* For local symbol, we have done absolute relocation in static
5475 linking stage. While for share library, we need to update
5476 the content of GOT entry according to the share objects
5477 loading base address. So we need to generate a
5478 R_AARCH64_RELATIVE reloc for dynamic linker. */
5479 s = globals->root.srelgot;
5480 if (s == NULL)
5481 abort ();
5482
5483 outrel.r_offset = got_entry_addr;
5484 outrel.r_info = ELFNN_R_INFO (0, AARCH64_R (RELATIVE));
5485 outrel.r_addend = value;
5486 elf_append_rela (output_bfd, s, &outrel);
5487 }
5488
5489 symbol_got_offset_mark (input_bfd, h, r_symndx);
5490 }
5491 }
5492
5493 /* Update the relocation value to GOT entry addr as we have transformed
5494 the direct data access into indirect data access through GOT. */
5495 value = symbol_got_offset (input_bfd, h, r_symndx);
5496 value = _bfd_aarch64_elf_resolve_relocation (bfd_r_type, place, value,
5497 0, weak_undef_p);
5498 *unresolved_reloc_p = FALSE;
5499 break;
5500
ce336788 5501 case BFD_RELOC_AARCH64_TLSGD_ADD_LO12_NC:
a6bb11b2 5502 case BFD_RELOC_AARCH64_TLSGD_ADR_PAGE21:
3c12b054 5503 case BFD_RELOC_AARCH64_TLSGD_ADR_PREL21:
a6bb11b2 5504 case BFD_RELOC_AARCH64_TLSIE_ADR_GOTTPREL_PAGE21:
a6bb11b2 5505 case BFD_RELOC_AARCH64_TLSIE_LD32_GOTTPREL_LO12_NC:
ce336788 5506 case BFD_RELOC_AARCH64_TLSIE_LD64_GOTTPREL_LO12_NC:
043bf05a 5507 case BFD_RELOC_AARCH64_TLSIE_LD_GOTTPREL_PREL19:
73f925cc 5508 case BFD_RELOC_AARCH64_TLSLD_ADD_LO12_NC:
f69e4920 5509 case BFD_RELOC_AARCH64_TLSLD_ADR_PAGE21:
77a69ff8 5510 case BFD_RELOC_AARCH64_TLSLD_ADR_PREL21:
a06ea964
NC		 5511 if (globals->root.sgot == NULL)
5512 return bfd_reloc_notsupported;
5513
5514 value = (symbol_got_offset (input_bfd, h, r_symndx)
5515 + globals->root.sgot->output_section->vma
f44a1f8e 5516 + globals->root.sgot->output_offset);
a06ea964 5517
caed7120
YZ		 5518 value = _bfd_aarch64_elf_resolve_relocation (bfd_r_type, place, value,
5519 0, weak_undef_p);
a06ea964
NC		 5520 *unresolved_reloc_p = FALSE;
5521 break;
5522
7ba7cfe4 5523 case BFD_RELOC_AARCH64_TLSGD_MOVW_G0_NC:
94facae3 5524 case BFD_RELOC_AARCH64_TLSGD_MOVW_G1:
3b957e5b
RL		 5525 case BFD_RELOC_AARCH64_TLSIE_MOVW_GOTTPREL_G0_NC:
5526 case BFD_RELOC_AARCH64_TLSIE_MOVW_GOTTPREL_G1:
94facae3
RL		 5527 if (globals->root.sgot == NULL)
5528 return bfd_reloc_notsupported;
5529
5530 value = symbol_got_offset (input_bfd, h, r_symndx);
5531 value = _bfd_aarch64_elf_resolve_relocation (bfd_r_type, place, value,
5532 0, weak_undef_p);
5533 *unresolved_reloc_p = FALSE;
5534 break;
5535
6ffe9a1b 5536 case BFD_RELOC_AARCH64_TLSLD_ADD_DTPREL_HI12:
40fbed84 5537 case BFD_RELOC_AARCH64_TLSLD_ADD_DTPREL_LO12:
753999c1 5538 case BFD_RELOC_AARCH64_TLSLD_ADD_DTPREL_LO12_NC:
07c9aa07
JW		 5539 case BFD_RELOC_AARCH64_TLSLD_LDST16_DTPREL_LO12:
5540 case BFD_RELOC_AARCH64_TLSLD_LDST16_DTPREL_LO12_NC:
5541 case BFD_RELOC_AARCH64_TLSLD_LDST32_DTPREL_LO12:
5542 case BFD_RELOC_AARCH64_TLSLD_LDST32_DTPREL_LO12_NC:
5543 case BFD_RELOC_AARCH64_TLSLD_LDST64_DTPREL_LO12:
5544 case BFD_RELOC_AARCH64_TLSLD_LDST64_DTPREL_LO12_NC:
5545 case BFD_RELOC_AARCH64_TLSLD_LDST8_DTPREL_LO12:
5546 case BFD_RELOC_AARCH64_TLSLD_LDST8_DTPREL_LO12_NC:
6ffe9a1b
JW		 5547 case BFD_RELOC_AARCH64_TLSLD_MOVW_DTPREL_G0:
5548 case BFD_RELOC_AARCH64_TLSLD_MOVW_DTPREL_G0_NC:
5549 case BFD_RELOC_AARCH64_TLSLD_MOVW_DTPREL_G1:
5550 case BFD_RELOC_AARCH64_TLSLD_MOVW_DTPREL_G1_NC:
5551 case BFD_RELOC_AARCH64_TLSLD_MOVW_DTPREL_G2:
40fbed84
JW		 5552 value = _bfd_aarch64_elf_resolve_relocation (bfd_r_type, place, value,
5553 signed_addend - dtpoff_base (info),
5554 weak_undef_p);
5555 break;
5556
a6bb11b2
YZ		 5557 case BFD_RELOC_AARCH64_TLSLE_ADD_TPREL_HI12:
5558 case BFD_RELOC_AARCH64_TLSLE_ADD_TPREL_LO12:
5559 case BFD_RELOC_AARCH64_TLSLE_ADD_TPREL_LO12_NC:
5560 case BFD_RELOC_AARCH64_TLSLE_MOVW_TPREL_G0:
5561 case BFD_RELOC_AARCH64_TLSLE_MOVW_TPREL_G0_NC:
5562 case BFD_RELOC_AARCH64_TLSLE_MOVW_TPREL_G1:
5563 case BFD_RELOC_AARCH64_TLSLE_MOVW_TPREL_G1_NC:
5564 case BFD_RELOC_AARCH64_TLSLE_MOVW_TPREL_G2:
caed7120
YZ		 5565 value = _bfd_aarch64_elf_resolve_relocation (bfd_r_type, place, value,
5566 signed_addend - tpoff_base (info),
5567 weak_undef_p);
a06ea964
NC		 5568 *unresolved_reloc_p = FALSE;
5569 break;
5570
7bcccb57 5571 case BFD_RELOC_AARCH64_TLSDESC_ADD_LO12_NC:
a6bb11b2 5572 case BFD_RELOC_AARCH64_TLSDESC_ADR_PAGE21:
389b8029 5573 case BFD_RELOC_AARCH64_TLSDESC_ADR_PREL21:
a6bb11b2 5574 case BFD_RELOC_AARCH64_TLSDESC_LD32_LO12_NC:
7bcccb57 5575 case BFD_RELOC_AARCH64_TLSDESC_LD64_LO12_NC:
1ada945d 5576 case BFD_RELOC_AARCH64_TLSDESC_LD_PREL19:
a06ea964
NC		 5577 if (globals->root.sgot == NULL)
5578 return bfd_reloc_notsupported;
a06ea964
NC		 5579 value = (symbol_tlsdesc_got_offset (input_bfd, h, r_symndx)
5580 + globals->root.sgotplt->output_section->vma
f44a1f8e 5581 + globals->root.sgotplt->output_offset
a06ea964
NC		 5582 + globals->sgotplt_jump_table_size);
5583
caed7120
YZ		 5584 value = _bfd_aarch64_elf_resolve_relocation (bfd_r_type, place, value,
5585 0, weak_undef_p);
a06ea964
NC		 5586 *unresolved_reloc_p = FALSE;
5587 break;
5588
0484b454
RL		 5589 case BFD_RELOC_AARCH64_TLSDESC_OFF_G0_NC:
5590 case BFD_RELOC_AARCH64_TLSDESC_OFF_G1:
5591 if (globals->root.sgot == NULL)
5592 return bfd_reloc_notsupported;
5593
5594 value = (symbol_tlsdesc_got_offset (input_bfd, h, r_symndx)
5595 + globals->root.sgotplt->output_section->vma
5596 + globals->root.sgotplt->output_offset
5597 + globals->sgotplt_jump_table_size);
5598
5599 value -= (globals->root.sgot->output_section->vma
5600 + globals->root.sgot->output_offset);
5601
5602 value = _bfd_aarch64_elf_resolve_relocation (bfd_r_type, place, value,
5603 0, weak_undef_p);
5604 *unresolved_reloc_p = FALSE;
5605 break;
5606
a06ea964
NC		 5607 default:
5608 return bfd_reloc_notsupported;
5609 }
5610
5611 if (saved_addend)
5612 *saved_addend = value;
5613
5614 /* Only apply the final relocation in a sequence. */
5615 if (save_addend)
5616 return bfd_reloc_continue;
5617
caed7120
YZ		 5618 return _bfd_aarch64_elf_put_addend (input_bfd, hit_data, bfd_r_type,
5619 howto, value);
a06ea964
NC		 5620}
5621
5622/* Handle TLS relaxations. Relaxing is possible for symbols that use
5623 R_AARCH64_TLSDESC_ADR_{PAGE, LD64_LO12_NC, ADD_LO12_NC} during a static
5624 link.
5625
5626 Return bfd_reloc_ok if we're done, bfd_reloc_continue if the caller
5627 is to then call final_link_relocate. Return other values in the
5628 case of error. */
5629
5630static bfd_reloc_status_type
cec5225b 5631elfNN_aarch64_tls_relax (struct elf_aarch64_link_hash_table *globals,
a06ea964 5632 bfd *input_bfd, bfd_byte *contents,
06d2788c 5633 Elf_Internal_Rela *rel, struct elf_link_hash_entry *h)
a06ea964
NC		 5634{
5635 bfd_boolean is_local = h == NULL;
cec5225b 5636 unsigned int r_type = ELFNN_R_TYPE (rel->r_info);
a06ea964
NC		 5637 unsigned long insn;
5638
5639 BFD_ASSERT (globals && input_bfd && contents && rel);
5640
a6bb11b2 5641 switch (elfNN_aarch64_bfd_reloc_from_type (r_type))
a06ea964 5642 {
a6bb11b2 5643 case BFD_RELOC_AARCH64_TLSDESC_ADR_PAGE21:
ce336788 5644 case BFD_RELOC_AARCH64_TLSGD_ADR_PAGE21:
a06ea964
NC		 5645 if (is_local)
5646 {
5647 /* GD->LE relaxation:
5648 adrp x0, :tlsgd:var => movz x0, :tprel_g1:var
5649 or
5650 adrp x0, :tlsdesc:var => movz x0, :tprel_g1:var
5651 */
5652 bfd_putl32 (0xd2a00000, contents + rel->r_offset);
5653 return bfd_reloc_continue;
5654 }
5655 else
5656 {
5657 /* GD->IE relaxation:
5658 adrp x0, :tlsgd:var => adrp x0, :gottprel:var
5659 or
5660 adrp x0, :tlsdesc:var => adrp x0, :gottprel:var
5661 */
a06ea964
NC		 5662 return bfd_reloc_continue;
5663 }
5664
389b8029
MS		 5665 case BFD_RELOC_AARCH64_TLSDESC_ADR_PREL21:
5666 BFD_ASSERT (0);
5667 break;
5668
1ada945d
MS		 5669 case BFD_RELOC_AARCH64_TLSDESC_LD_PREL19:
5670 if (is_local)
5671 {
5672 /* Tiny TLSDESC->LE relaxation:
5673 ldr x1, :tlsdesc:var => movz x0, #:tprel_g1:var
5674 adr x0, :tlsdesc:var => movk x0, #:tprel_g0_nc:var
5675 .tlsdesccall var
5676 blr x1 => nop
5677 */
5678 BFD_ASSERT (ELFNN_R_TYPE (rel[1].r_info) == AARCH64_R (TLSDESC_ADR_PREL21));
5679 BFD_ASSERT (ELFNN_R_TYPE (rel[2].r_info) == AARCH64_R (TLSDESC_CALL));
5680
5681 rel[1].r_info = ELFNN_R_INFO (ELFNN_R_SYM (rel->r_info),
5682 AARCH64_R (TLSLE_MOVW_TPREL_G0_NC));
5683 rel[2].r_info = ELFNN_R_INFO (STN_UNDEF, R_AARCH64_NONE);
5684
5685 bfd_putl32 (0xd2a00000, contents + rel->r_offset);
5686 bfd_putl32 (0xf2800000, contents + rel->r_offset + 4);
5687 bfd_putl32 (INSN_NOP, contents + rel->r_offset + 8);
5688 return bfd_reloc_continue;
5689 }
5690 else
5691 {
5692 /* Tiny TLSDESC->IE relaxation:
5693 ldr x1, :tlsdesc:var => ldr x0, :gottprel:var
5694 adr x0, :tlsdesc:var => nop
5695 .tlsdesccall var
5696 blr x1 => nop
5697 */
5698 BFD_ASSERT (ELFNN_R_TYPE (rel[1].r_info) == AARCH64_R (TLSDESC_ADR_PREL21));
5699 BFD_ASSERT (ELFNN_R_TYPE (rel[2].r_info) == AARCH64_R (TLSDESC_CALL));
5700
5701 rel[1].r_info = ELFNN_R_INFO (STN_UNDEF, R_AARCH64_NONE);
5702 rel[2].r_info = ELFNN_R_INFO (STN_UNDEF, R_AARCH64_NONE);
5703
5704 bfd_putl32 (0x58000000, contents + rel->r_offset);
5705 bfd_putl32 (INSN_NOP, contents + rel->r_offset + 4);
5706 bfd_putl32 (INSN_NOP, contents + rel->r_offset + 8);
5707 return bfd_reloc_continue;
5708 }
5709
3c12b054
MS		 5710 case BFD_RELOC_AARCH64_TLSGD_ADR_PREL21:
5711 if (is_local)
5712 {
5713 /* Tiny GD->LE relaxation:
5714 adr x0, :tlsgd:var => mrs x1, tpidr_el0
5715 bl __tls_get_addr => add x0, x1, #:tprel_hi12:x, lsl #12
5716 nop => add x0, x0, #:tprel_lo12_nc:x
5717 */
5718
5719 /* First kill the tls_get_addr reloc on the bl instruction. */
5720 BFD_ASSERT (rel->r_offset + 4 == rel[1].r_offset);
5721
5722 bfd_putl32 (0xd53bd041, contents + rel->r_offset + 0);
5723 bfd_putl32 (0x91400020, contents + rel->r_offset + 4);
5724 bfd_putl32 (0x91000000, contents + rel->r_offset + 8);
5725
5726 rel[1].r_info = ELFNN_R_INFO (ELFNN_R_SYM (rel->r_info),
5727 AARCH64_R (TLSLE_ADD_TPREL_LO12_NC));
5728 rel[1].r_offset = rel->r_offset + 8;
5729
5730 /* Move the current relocation to the second instruction in
5731 the sequence. */
5732 rel->r_offset += 4;
5733 rel->r_info = ELFNN_R_INFO (ELFNN_R_SYM (rel->r_info),
5734 AARCH64_R (TLSLE_ADD_TPREL_HI12));
5735 return bfd_reloc_continue;
5736 }
5737 else
5738 {
5739 /* Tiny GD->IE relaxation:
5740 adr x0, :tlsgd:var => ldr x0, :gottprel:var
5741 bl __tls_get_addr => mrs x1, tpidr_el0
5742 nop => add x0, x0, x1
5743 */
5744
5745 /* First kill the tls_get_addr reloc on the bl instruction. */
5746 BFD_ASSERT (rel->r_offset + 4 == rel[1].r_offset);
5747 rel[1].r_info = ELFNN_R_INFO (STN_UNDEF, R_AARCH64_NONE);
5748
5749 bfd_putl32 (0x58000000, contents + rel->r_offset);
5750 bfd_putl32 (0xd53bd041, contents + rel->r_offset + 4);
5751 bfd_putl32 (0x8b000020, contents + rel->r_offset + 8);
5752 return bfd_reloc_continue;
5753 }
5754
ac734732
RL		 5755#if ARCH_SIZE == 64
5756 case BFD_RELOC_AARCH64_TLSGD_MOVW_G1:
5757 BFD_ASSERT (ELFNN_R_TYPE (rel[1].r_info) == AARCH64_R (TLSGD_MOVW_G0_NC));
5758 BFD_ASSERT (rel->r_offset + 12 == rel[2].r_offset);
5759 BFD_ASSERT (ELFNN_R_TYPE (rel[2].r_info) == AARCH64_R (CALL26));
5760
5761 if (is_local)
5762 {
5763 /* Large GD->LE relaxation:
5764 movz x0, #:tlsgd_g1:var => movz x0, #:tprel_g2:var, lsl #32
5765 movk x0, #:tlsgd_g0_nc:var => movk x0, #:tprel_g1_nc:var, lsl #16
5766 add x0, gp, x0 => movk x0, #:tprel_g0_nc:var
5767 bl __tls_get_addr => mrs x1, tpidr_el0
5768 nop => add x0, x0, x1
5769 */
5770 rel[2].r_info = ELFNN_R_INFO (ELFNN_R_SYM (rel->r_info),
5771 AARCH64_R (TLSLE_MOVW_TPREL_G0_NC));
5772 rel[2].r_offset = rel->r_offset + 8;
5773
5774 bfd_putl32 (0xd2c00000, contents + rel->r_offset + 0);
5775 bfd_putl32 (0xf2a00000, contents + rel->r_offset + 4);
5776 bfd_putl32 (0xf2800000, contents + rel->r_offset + 8);
5777 bfd_putl32 (0xd53bd041, contents + rel->r_offset + 12);
5778 bfd_putl32 (0x8b000020, contents + rel->r_offset + 16);
5779 }
5780 else
5781 {
5782 /* Large GD->IE relaxation:
5783 movz x0, #:tlsgd_g1:var => movz x0, #:gottprel_g1:var, lsl #16
5784 movk x0, #:tlsgd_g0_nc:var => movk x0, #:gottprel_g0_nc:var
5785 add x0, gp, x0 => ldr x0, [gp, x0]
5786 bl __tls_get_addr => mrs x1, tpidr_el0
5787 nop => add x0, x0, x1
5788 */
5789 rel[2].r_info = ELFNN_R_INFO (STN_UNDEF, R_AARCH64_NONE);
5790 bfd_putl32 (0xd2a80000, contents + rel->r_offset + 0);
5791 bfd_putl32 (0x58000000, contents + rel->r_offset + 8);
5792 bfd_putl32 (0xd53bd041, contents + rel->r_offset + 12);
5793 bfd_putl32 (0x8b000020, contents + rel->r_offset + 16);
5794 }
5795 return bfd_reloc_continue;
5796
5797 case BFD_RELOC_AARCH64_TLSGD_MOVW_G0_NC:
5798 return bfd_reloc_continue;
5799#endif
5800
043bf05a
MS		 5801 case BFD_RELOC_AARCH64_TLSIE_LD_GOTTPREL_PREL19:
5802 return bfd_reloc_continue;
5803
a6bb11b2 5804 case BFD_RELOC_AARCH64_TLSDESC_LDNN_LO12_NC:
a06ea964
NC		 5805 if (is_local)
5806 {
5807 /* GD->LE relaxation:
5808 ldr xd, [x0, #:tlsdesc_lo12:var] => movk x0, :tprel_g0_nc:var
5809 */
5810 bfd_putl32 (0xf2800000, contents + rel->r_offset);
5811 return bfd_reloc_continue;
5812 }
5813 else
5814 {
5815 /* GD->IE relaxation:
5816 ldr xd, [x0, #:tlsdesc_lo12:var] => ldr x0, [x0, #:gottprel_lo12:var]
5817 */
5818 insn = bfd_getl32 (contents + rel->r_offset);
fa85fb9a 5819 insn &= 0xffffffe0;
a06ea964
NC		 5820 bfd_putl32 (insn, contents + rel->r_offset);
5821 return bfd_reloc_continue;
5822 }
5823
a6bb11b2 5824 case BFD_RELOC_AARCH64_TLSGD_ADD_LO12_NC:
a06ea964
NC		 5825 if (is_local)
5826 {
5827 /* GD->LE relaxation
5828 add x0, #:tlsgd_lo12:var => movk x0, :tprel_g0_nc:var
5829 bl __tls_get_addr => mrs x1, tpidr_el0
5830 nop => add x0, x1, x0
5831 */
5832
5833 /* First kill the tls_get_addr reloc on the bl instruction. */
5834 BFD_ASSERT (rel->r_offset + 4 == rel[1].r_offset);
cec5225b 5835 rel[1].r_info = ELFNN_R_INFO (STN_UNDEF, R_AARCH64_NONE);
a06ea964
NC		 5836
5837 bfd_putl32 (0xf2800000, contents + rel->r_offset);
5838 bfd_putl32 (0xd53bd041, contents + rel->r_offset + 4);
5839 bfd_putl32 (0x8b000020, contents + rel->r_offset + 8);
5840 return bfd_reloc_continue;
5841 }
5842 else
5843 {
5844 /* GD->IE relaxation
5845 ADD x0, #:tlsgd_lo12:var => ldr x0, [x0, #:gottprel_lo12:var]
5846 BL __tls_get_addr => mrs x1, tpidr_el0
5847 R_AARCH64_CALL26
5848 NOP => add x0, x1, x0
5849 */
5850
a6bb11b2 5851 BFD_ASSERT (ELFNN_R_TYPE (rel[1].r_info) == AARCH64_R (CALL26));
a06ea964
NC		 5852
5853 /* Remove the relocation on the BL instruction. */
cec5225b 5854 rel[1].r_info = ELFNN_R_INFO (STN_UNDEF, R_AARCH64_NONE);
a06ea964
NC		 5855
5856 bfd_putl32 (0xf9400000, contents + rel->r_offset);
5857
5858 /* We choose to fixup the BL and NOP instructions using the
5859 offset from the second relocation to allow flexibility in
5860 scheduling instructions between the ADD and BL. */
5861 bfd_putl32 (0xd53bd041, contents + rel[1].r_offset);
5862 bfd_putl32 (0x8b000020, contents + rel[1].r_offset + 4);
5863 return bfd_reloc_continue;
5864 }
5865
0484b454 5866 case BFD_RELOC_AARCH64_TLSDESC_ADD:
a6bb11b2
YZ		 5867 case BFD_RELOC_AARCH64_TLSDESC_ADD_LO12_NC:
5868 case BFD_RELOC_AARCH64_TLSDESC_CALL:
a06ea964
NC		 5869 /* GD->IE/LE relaxation:
5870 add x0, x0, #:tlsdesc_lo12:var => nop
5871 blr xd => nop
5872 */
5873 bfd_putl32 (INSN_NOP, contents + rel->r_offset);
5874 return bfd_reloc_ok;
5875
0484b454
RL		 5876 case BFD_RELOC_AARCH64_TLSDESC_LDR:
5877 if (is_local)
5878 {
5879 /* GD->LE relaxation:
5880 ldr xd, [gp, xn] => movk x0, #:tprel_g0_nc:var
5881 */
5882 bfd_putl32 (0xf2800000, contents + rel->r_offset);
5883 return bfd_reloc_continue;
5884 }
5885 else
5886 {
5887 /* GD->IE relaxation:
5888 ldr xd, [gp, xn] => ldr x0, [gp, xn]
5889 */
5890 insn = bfd_getl32 (contents + rel->r_offset);
5891 insn &= 0xffffffe0;
5892 bfd_putl32 (insn, contents + rel->r_offset);
5893 return bfd_reloc_ok;
5894 }
5895
5896 case BFD_RELOC_AARCH64_TLSDESC_OFF_G0_NC:
5897 /* GD->LE relaxation:
5898 movk xd, #:tlsdesc_off_g0_nc:var => movk x0, #:tprel_g1_nc:var, lsl #16
5899 GD->IE relaxation:
5900 movk xd, #:tlsdesc_off_g0_nc:var => movk xd, #:gottprel_g0_nc:var
5901 */
5902 if (is_local)
5903 bfd_putl32 (0xf2a00000, contents + rel->r_offset);
5904 return bfd_reloc_continue;
5905
5906 case BFD_RELOC_AARCH64_TLSDESC_OFF_G1:
5907 if (is_local)
5908 {
5909 /* GD->LE relaxation:
5910 movz xd, #:tlsdesc_off_g1:var => movz x0, #:tprel_g2:var, lsl #32
5911 */
5912 bfd_putl32 (0xd2c00000, contents + rel->r_offset);
5913 return bfd_reloc_continue;
5914 }
5915 else
5916 {
5917 /* GD->IE relaxation:
5918 movz xd, #:tlsdesc_off_g1:var => movz xd, #:gottprel_g1:var, lsl #16
5919 */
5920 insn = bfd_getl32 (contents + rel->r_offset);
5921 bfd_putl32 (0xd2a00000 | (insn & 0x1f), contents + rel->r_offset);
5922 return bfd_reloc_continue;
5923 }
5924
a6bb11b2 5925 case BFD_RELOC_AARCH64_TLSIE_ADR_GOTTPREL_PAGE21:
a06ea964
NC		 5926 /* IE->LE relaxation:
5927 adrp xd, :gottprel:var => movz xd, :tprel_g1:var
5928 */
5929 if (is_local)
5930 {
5931 insn = bfd_getl32 (contents + rel->r_offset);
5932 bfd_putl32 (0xd2a00000 | (insn & 0x1f), contents + rel->r_offset);
5933 }
5934 return bfd_reloc_continue;
5935
a6bb11b2 5936 case BFD_RELOC_AARCH64_TLSIE_LDNN_GOTTPREL_LO12_NC:
a06ea964
NC		 5937 /* IE->LE relaxation:
5938 ldr xd, [xm, #:gottprel_lo12:var] => movk xd, :tprel_g0_nc:var
5939 */
5940 if (is_local)
5941 {
5942 insn = bfd_getl32 (contents + rel->r_offset);
5943 bfd_putl32 (0xf2800000 | (insn & 0x1f), contents + rel->r_offset);
5944 }
5945 return bfd_reloc_continue;
5946
259364ad
JW		 5947 case BFD_RELOC_AARCH64_TLSLD_ADR_PREL21:
5948 /* LD->LE relaxation (tiny):
5949 adr x0, :tlsldm:x => mrs x0, tpidr_el0
5950 bl __tls_get_addr => add x0, x0, TCB_SIZE
5951 */
5952 if (is_local)
5953 {
5954 BFD_ASSERT (rel->r_offset + 4 == rel[1].r_offset);
5955 BFD_ASSERT (ELFNN_R_TYPE (rel[1].r_info) == AARCH64_R (CALL26));
5956 /* No need of CALL26 relocation for tls_get_addr. */
5957 rel[1].r_info = ELFNN_R_INFO (STN_UNDEF, R_AARCH64_NONE);
5958 bfd_putl32 (0xd53bd040, contents + rel->r_offset + 0);
5959 bfd_putl32 (0x91004000, contents + rel->r_offset + 4);
5960 return bfd_reloc_ok;
5961 }
5962 return bfd_reloc_continue;
5963
5964 case BFD_RELOC_AARCH64_TLSLD_ADR_PAGE21:
5965 /* LD->LE relaxation (small):
5966 adrp x0, :tlsldm:x => mrs x0, tpidr_el0
5967 */
5968 if (is_local)
5969 {
5970 bfd_putl32 (0xd53bd040, contents + rel->r_offset);
5971 return bfd_reloc_ok;
5972 }
5973 return bfd_reloc_continue;
5974
5975 case BFD_RELOC_AARCH64_TLSLD_ADD_LO12_NC:
5976 /* LD->LE relaxation (small):
5977 add x0, #:tlsldm_lo12:x => add x0, x0, TCB_SIZE
5978 bl __tls_get_addr => nop
5979 */
5980 if (is_local)
5981 {
5982 BFD_ASSERT (rel->r_offset + 4 == rel[1].r_offset);
5983 BFD_ASSERT (ELFNN_R_TYPE (rel[1].r_info) == AARCH64_R (CALL26));
5984 /* No need of CALL26 relocation for tls_get_addr. */
5985 rel[1].r_info = ELFNN_R_INFO (STN_UNDEF, R_AARCH64_NONE);
5986 bfd_putl32 (0x91004000, contents + rel->r_offset + 0);
5987 bfd_putl32 (0xd503201f, contents + rel->r_offset + 4);
5988 return bfd_reloc_ok;
5989 }
5990 return bfd_reloc_continue;
5991
a06ea964
NC		 5992 default:
5993 return bfd_reloc_continue;
5994 }
5995
5996 return bfd_reloc_ok;
5997}
5998
5999/* Relocate an AArch64 ELF section. */
6000
6001static bfd_boolean
cec5225b 6002elfNN_aarch64_relocate_section (bfd *output_bfd,
a06ea964
NC		 6003 struct bfd_link_info *info,
6004 bfd *input_bfd,
6005 asection *input_section,
6006 bfd_byte *contents,
6007 Elf_Internal_Rela *relocs,
6008 Elf_Internal_Sym *local_syms,
6009 asection **local_sections)
6010{
6011 Elf_Internal_Shdr *symtab_hdr;
6012 struct elf_link_hash_entry **sym_hashes;
6013 Elf_Internal_Rela *rel;
6014 Elf_Internal_Rela *relend;
6015 const char *name;
cec5225b 6016 struct elf_aarch64_link_hash_table *globals;
a06ea964
NC		 6017 bfd_boolean save_addend = FALSE;
6018 bfd_vma addend = 0;
6019
cec5225b 6020 globals = elf_aarch64_hash_table (info);
a06ea964
NC		 6021
6022 symtab_hdr = &elf_symtab_hdr (input_bfd);
6023 sym_hashes = elf_sym_hashes (input_bfd);
6024
6025 rel = relocs;
6026 relend = relocs + input_section->reloc_count;
6027 for (; rel < relend; rel++)
6028 {
6029 unsigned int r_type;
a6bb11b2
YZ		 6030 bfd_reloc_code_real_type bfd_r_type;
6031 bfd_reloc_code_real_type relaxed_bfd_r_type;
a06ea964
NC		 6032 reloc_howto_type *howto;
6033 unsigned long r_symndx;
6034 Elf_Internal_Sym *sym;
6035 asection *sec;
6036 struct elf_link_hash_entry *h;
6037 bfd_vma relocation;
6038 bfd_reloc_status_type r;
6039 arelent bfd_reloc;
6040 char sym_type;
6041 bfd_boolean unresolved_reloc = FALSE;
6042 char *error_message = NULL;
6043
cec5225b
YZ		 6044 r_symndx = ELFNN_R_SYM (rel->r_info);
6045 r_type = ELFNN_R_TYPE (rel->r_info);
a06ea964 6046
cec5225b 6047 bfd_reloc.howto = elfNN_aarch64_howto_from_type (r_type);
a06ea964
NC		 6048 howto = bfd_reloc.howto;
6049
7fcfd62d
NC		 6050 if (howto == NULL)
6051 {
6052 (*_bfd_error_handler)
6053 (_("%B: unrecognized relocation (0x%x) in section `%A'"),
6054 input_bfd, input_section, r_type);
6055 return FALSE;
6056 }
a6bb11b2 6057 bfd_r_type = elfNN_aarch64_bfd_reloc_from_howto (howto);
7fcfd62d 6058
a06ea964
NC		 6059 h = NULL;
6060 sym = NULL;
6061 sec = NULL;
6062
6063 if (r_symndx < symtab_hdr->sh_info)
6064 {
6065 sym = local_syms + r_symndx;
cec5225b 6066 sym_type = ELFNN_ST_TYPE (sym->st_info);
a06ea964
NC		 6067 sec = local_sections[r_symndx];
6068
6069 /* An object file might have a reference to a local
6070 undefined symbol. This is a daft object file, but we
6071 should at least do something about it. */
6072 if (r_type != R_AARCH64_NONE && r_type != R_AARCH64_NULL
6073 && bfd_is_und_section (sec)
6074 && ELF_ST_BIND (sym->st_info) != STB_WEAK)
6075 {
6076 if (!info->callbacks->undefined_symbol
6077 (info, bfd_elf_string_from_elf_section
6078 (input_bfd, symtab_hdr->sh_link, sym->st_name),
6079 input_bfd, input_section, rel->r_offset, TRUE))
6080 return FALSE;
6081 }
6082
a06ea964 6083 relocation = _bfd_elf_rela_local_sym (output_bfd, sym, &sec, rel);
1419bbe5
WN		 6084
6085 /* Relocate against local STT_GNU_IFUNC symbol. */
0e1862bb 6086 if (!bfd_link_relocatable (info)
1419bbe5
WN		 6087 && ELF_ST_TYPE (sym->st_info) == STT_GNU_IFUNC)
6088 {
6089 h = elfNN_aarch64_get_local_sym_hash (globals, input_bfd,
6090 rel, FALSE);
6091 if (h == NULL)
6092 abort ();
6093
6094 /* Set STT_GNU_IFUNC symbol value. */
6095 h->root.u.def.value = sym->st_value;
6096 h->root.u.def.section = sec;
6097 }
a06ea964
NC		 6098 }
6099 else
6100 {
62d887d4 6101 bfd_boolean warned, ignored;
a06ea964
NC		 6102
6103 RELOC_FOR_GLOBAL_SYMBOL (info, input_bfd, input_section, rel,
6104 r_symndx, symtab_hdr, sym_hashes,
6105 h, sec, relocation,
62d887d4 6106 unresolved_reloc, warned, ignored);
a06ea964
NC		 6107
6108 sym_type = h->type;
6109 }
6110
6111 if (sec != NULL && discarded_section (sec))
6112 RELOC_AGAINST_DISCARDED_SECTION (info, input_bfd, input_section,
6113 rel, 1, relend, howto, 0, contents);
6114
0e1862bb 6115 if (bfd_link_relocatable (info))
2e0488d3 6116 continue;
a06ea964
NC		 6117
6118 if (h != NULL)
6119 name = h->root.root.string;
6120 else
6121 {
6122 name = (bfd_elf_string_from_elf_section
6123 (input_bfd, symtab_hdr->sh_link, sym->st_name));
6124 if (name == NULL || *name == '\0')
6125 name = bfd_section_name (input_bfd, sec);
6126 }
6127
6128 if (r_symndx != 0
6129 && r_type != R_AARCH64_NONE
6130 && r_type != R_AARCH64_NULL
6131 && (h == NULL
6132 || h->root.type == bfd_link_hash_defined
6133 || h->root.type == bfd_link_hash_defweak)
a6bb11b2 6134 && IS_AARCH64_TLS_RELOC (bfd_r_type) != (sym_type == STT_TLS))
a06ea964
NC		 6135 {
6136 (*_bfd_error_handler)
6137 ((sym_type == STT_TLS
6138 ? _("%B(%A+0x%lx): %s used with TLS symbol %s")
6139 : _("%B(%A+0x%lx): %s used with non-TLS symbol %s")),
6140 input_bfd,
6141 input_section, (long) rel->r_offset, howto->name, name);
6142 }
6143
a06ea964
NC		 6144 /* We relax only if we can see that there can be a valid transition
6145 from a reloc type to another.
cec5225b 6146 We call elfNN_aarch64_final_link_relocate unless we're completely
a06ea964
NC		 6147 done, i.e., the relaxation produced the final output we want. */
6148
a6bb11b2
YZ		 6149 relaxed_bfd_r_type = aarch64_tls_transition (input_bfd, info, r_type,
6150 h, r_symndx);
6151 if (relaxed_bfd_r_type != bfd_r_type)
a06ea964 6152 {
a6bb11b2
YZ		 6153 bfd_r_type = relaxed_bfd_r_type;
6154 howto = elfNN_aarch64_howto_from_bfd_reloc (bfd_r_type);
6155 BFD_ASSERT (howto != NULL);
6156 r_type = howto->type;
06d2788c 6157 r = elfNN_aarch64_tls_relax (globals, input_bfd, contents, rel, h);
a06ea964
NC		 6158 unresolved_reloc = 0;
6159 }
6160 else
6161 r = bfd_reloc_continue;
6162
6163 /* There may be multiple consecutive relocations for the
6164 same offset. In that case we are supposed to treat the
6165 output of each relocation as the addend for the next. */
6166 if (rel + 1 < relend
6167 && rel->r_offset == rel[1].r_offset
cec5225b
YZ		 6168 && ELFNN_R_TYPE (rel[1].r_info) != R_AARCH64_NONE
6169 && ELFNN_R_TYPE (rel[1].r_info) != R_AARCH64_NULL)
a06ea964
NC		 6170 save_addend = TRUE;
6171 else
6172 save_addend = FALSE;
6173
6174 if (r == bfd_reloc_continue)
cec5225b 6175 r = elfNN_aarch64_final_link_relocate (howto, input_bfd, output_bfd,
a06ea964
NC		 6176 input_section, contents, rel,
6177 relocation, info, sec,
6178 h, &unresolved_reloc,
1419bbe5 6179 save_addend, &addend, sym);
a06ea964 6180
a6bb11b2 6181 switch (elfNN_aarch64_bfd_reloc_from_type (r_type))
a06ea964 6182 {
ce336788 6183 case BFD_RELOC_AARCH64_TLSGD_ADD_LO12_NC:
a6bb11b2 6184 case BFD_RELOC_AARCH64_TLSGD_ADR_PAGE21:
3c12b054 6185 case BFD_RELOC_AARCH64_TLSGD_ADR_PREL21:
7ba7cfe4 6186 case BFD_RELOC_AARCH64_TLSGD_MOVW_G0_NC:
94facae3 6187 case BFD_RELOC_AARCH64_TLSGD_MOVW_G1:
73f925cc 6188 case BFD_RELOC_AARCH64_TLSLD_ADD_LO12_NC:
f69e4920 6189 case BFD_RELOC_AARCH64_TLSLD_ADR_PAGE21:
77a69ff8 6190 case BFD_RELOC_AARCH64_TLSLD_ADR_PREL21:
a06ea964
NC		 6191 if (! symbol_got_offset_mark_p (input_bfd, h, r_symndx))
6192 {
6193 bfd_boolean need_relocs = FALSE;
6194 bfd_byte *loc;
6195 int indx;
6196 bfd_vma off;
6197
6198 off = symbol_got_offset (input_bfd, h, r_symndx);
6199 indx = h && h->dynindx != -1 ? h->dynindx : 0;
6200
6201 need_relocs =
0e1862bb 6202 (bfd_link_pic (info) || indx != 0) &&
a06ea964
NC		 6203 (h == NULL
6204 || ELF_ST_VISIBILITY (h->other) == STV_DEFAULT
6205 || h->root.type != bfd_link_hash_undefweak);
6206
6207 BFD_ASSERT (globals->root.srelgot != NULL);
6208
6209 if (need_relocs)
6210 {
6211 Elf_Internal_Rela rela;
a6bb11b2 6212 rela.r_info = ELFNN_R_INFO (indx, AARCH64_R (TLS_DTPMOD));
a06ea964
NC		 6213 rela.r_addend = 0;
6214 rela.r_offset = globals->root.sgot->output_section->vma +
6215 globals->root.sgot->output_offset + off;
6216
6217
6218 loc = globals->root.srelgot->contents;
6219 loc += globals->root.srelgot->reloc_count++
6220 * RELOC_SIZE (htab);
cec5225b 6221 bfd_elfNN_swap_reloca_out (output_bfd, &rela, loc);
a06ea964 6222
f69e4920
JW		 6223 bfd_reloc_code_real_type real_type =
6224 elfNN_aarch64_bfd_reloc_from_type (r_type);
6225
6226 if (real_type == BFD_RELOC_AARCH64_TLSLD_ADR_PREL21
73f925cc
JW		 6227 || real_type == BFD_RELOC_AARCH64_TLSLD_ADR_PAGE21
6228 || real_type == BFD_RELOC_AARCH64_TLSLD_ADD_LO12_NC)
77a69ff8
JW		 6229 {
6230 /* For local dynamic, don't generate DTPREL in any case.
6231 Initialize the DTPREL slot into zero, so we get module
6232 base address when invoke runtime TLS resolver. */
6233 bfd_put_NN (output_bfd, 0,
6234 globals->root.sgot->contents + off
6235 + GOT_ENTRY_SIZE);
6236 }
6237 else if (indx == 0)
a06ea964 6238 {
cec5225b 6239 bfd_put_NN (output_bfd,
a06ea964
NC		 6240 relocation - dtpoff_base (info),
6241 globals->root.sgot->contents + off
6242 + GOT_ENTRY_SIZE);
6243 }
6244 else
6245 {
6246 /* This TLS symbol is global. We emit a
6247 relocation to fixup the tls offset at load
6248 time. */
6249 rela.r_info =
a6bb11b2 6250 ELFNN_R_INFO (indx, AARCH64_R (TLS_DTPREL));
a06ea964
NC		 6251 rela.r_addend = 0;
6252 rela.r_offset =
6253 (globals->root.sgot->output_section->vma
6254 + globals->root.sgot->output_offset + off
6255 + GOT_ENTRY_SIZE);
6256
6257 loc = globals->root.srelgot->contents;
6258 loc += globals->root.srelgot->reloc_count++
6259 * RELOC_SIZE (globals);
cec5225b
YZ		 6260 bfd_elfNN_swap_reloca_out (output_bfd, &rela, loc);
6261 bfd_put_NN (output_bfd, (bfd_vma) 0,
a06ea964
NC		 6262 globals->root.sgot->contents + off
6263 + GOT_ENTRY_SIZE);
6264 }
6265 }
6266 else
6267 {
cec5225b 6268 bfd_put_NN (output_bfd, (bfd_vma) 1,
a06ea964 6269 globals->root.sgot->contents + off);
cec5225b 6270 bfd_put_NN (output_bfd,
a06ea964
NC		 6271 relocation - dtpoff_base (info),
6272 globals->root.sgot->contents + off
6273 + GOT_ENTRY_SIZE);
6274 }
6275
6276 symbol_got_offset_mark (input_bfd, h, r_symndx);
6277 }
6278 break;
6279
a6bb11b2
YZ		 6280 case BFD_RELOC_AARCH64_TLSIE_ADR_GOTTPREL_PAGE21:
6281 case BFD_RELOC_AARCH64_TLSIE_LDNN_GOTTPREL_LO12_NC:
043bf05a 6282 case BFD_RELOC_AARCH64_TLSIE_LD_GOTTPREL_PREL19:
3b957e5b
RL		 6283 case BFD_RELOC_AARCH64_TLSIE_MOVW_GOTTPREL_G0_NC:
6284 case BFD_RELOC_AARCH64_TLSIE_MOVW_GOTTPREL_G1:
a06ea964
NC		 6285 if (! symbol_got_offset_mark_p (input_bfd, h, r_symndx))
6286 {
6287 bfd_boolean need_relocs = FALSE;
6288 bfd_byte *loc;
6289 int indx;
6290 bfd_vma off;
6291
6292 off = symbol_got_offset (input_bfd, h, r_symndx);
6293
6294 indx = h && h->dynindx != -1 ? h->dynindx : 0;
6295
6296 need_relocs =
0e1862bb 6297 (bfd_link_pic (info) || indx != 0) &&
a06ea964
NC		 6298 (h == NULL
6299 || ELF_ST_VISIBILITY (h->other) == STV_DEFAULT
6300 || h->root.type != bfd_link_hash_undefweak);
6301
6302 BFD_ASSERT (globals->root.srelgot != NULL);
6303
6304 if (need_relocs)
6305 {
6306 Elf_Internal_Rela rela;
6307
6308 if (indx == 0)
6309 rela.r_addend = relocation - dtpoff_base (info);
6310 else
6311 rela.r_addend = 0;
6312
a6bb11b2 6313 rela.r_info = ELFNN_R_INFO (indx, AARCH64_R (TLS_TPREL));
a06ea964
NC		 6314 rela.r_offset = globals->root.sgot->output_section->vma +
6315 globals->root.sgot->output_offset + off;
6316
6317 loc = globals->root.srelgot->contents;
6318 loc += globals->root.srelgot->reloc_count++
6319 * RELOC_SIZE (htab);
6320
cec5225b 6321 bfd_elfNN_swap_reloca_out (output_bfd, &rela, loc);
a06ea964 6322
cec5225b 6323 bfd_put_NN (output_bfd, rela.r_addend,
a06ea964
NC		 6324 globals->root.sgot->contents + off);
6325 }
6326 else
cec5225b 6327 bfd_put_NN (output_bfd, relocation - tpoff_base (info),
a06ea964
NC		 6328 globals->root.sgot->contents + off);
6329
6330 symbol_got_offset_mark (input_bfd, h, r_symndx);
6331 }
6332 break;
6333
7bcccb57 6334 case BFD_RELOC_AARCH64_TLSDESC_ADD_LO12_NC:
a6bb11b2 6335 case BFD_RELOC_AARCH64_TLSDESC_ADR_PAGE21:
389b8029 6336 case BFD_RELOC_AARCH64_TLSDESC_ADR_PREL21:
a6bb11b2 6337 case BFD_RELOC_AARCH64_TLSDESC_LDNN_LO12_NC:
1ada945d 6338 case BFD_RELOC_AARCH64_TLSDESC_LD_PREL19:
0484b454
RL		 6339 case BFD_RELOC_AARCH64_TLSDESC_OFF_G0_NC:
6340 case BFD_RELOC_AARCH64_TLSDESC_OFF_G1:
a06ea964
NC		 6341 if (! symbol_tlsdesc_got_offset_mark_p (input_bfd, h, r_symndx))
6342 {
6343 bfd_boolean need_relocs = FALSE;
6344 int indx = h && h->dynindx != -1 ? h->dynindx : 0;
6345 bfd_vma off = symbol_tlsdesc_got_offset (input_bfd, h, r_symndx);
6346
6347 need_relocs = (h == NULL
6348 || ELF_ST_VISIBILITY (h->other) == STV_DEFAULT
6349 || h->root.type != bfd_link_hash_undefweak);
6350
6351 BFD_ASSERT (globals->root.srelgot != NULL);
6352 BFD_ASSERT (globals->root.sgot != NULL);
6353
6354 if (need_relocs)
6355 {
6356 bfd_byte *loc;
6357 Elf_Internal_Rela rela;
a6bb11b2
YZ		 6358 rela.r_info = ELFNN_R_INFO (indx, AARCH64_R (TLSDESC));
6359
a06ea964
NC		 6360 rela.r_addend = 0;
6361 rela.r_offset = (globals->root.sgotplt->output_section->vma
6362 + globals->root.sgotplt->output_offset
6363 + off + globals->sgotplt_jump_table_size);
6364
6365 if (indx == 0)
6366 rela.r_addend = relocation - dtpoff_base (info);
6367
6368 /* Allocate the next available slot in the PLT reloc
6369 section to hold our R_AARCH64_TLSDESC, the next
6370 available slot is determined from reloc_count,
6371 which we step. But note, reloc_count was
6372 artifically moved down while allocating slots for
6373 real PLT relocs such that all of the PLT relocs
6374 will fit above the initial reloc_count and the
6375 extra stuff will fit below. */
6376 loc = globals->root.srelplt->contents;
6377 loc += globals->root.srelplt->reloc_count++
6378 * RELOC_SIZE (globals);
6379
cec5225b 6380 bfd_elfNN_swap_reloca_out (output_bfd, &rela, loc);
a06ea964 6381
cec5225b 6382 bfd_put_NN (output_bfd, (bfd_vma) 0,
a06ea964
NC		 6383 globals->root.sgotplt->contents + off +
6384 globals->sgotplt_jump_table_size);
cec5225b 6385 bfd_put_NN (output_bfd, (bfd_vma) 0,
a06ea964
NC		 6386 globals->root.sgotplt->contents + off +
6387 globals->sgotplt_jump_table_size +
6388 GOT_ENTRY_SIZE);
6389 }
6390
6391 symbol_tlsdesc_got_offset_mark (input_bfd, h, r_symndx);
6392 }
6393 break;
a6bb11b2
YZ		 6394 default:
6395 break;
a06ea964
NC		 6396 }
6397
a06ea964
NC		 6398 /* Dynamic relocs are not propagated for SEC_DEBUGGING sections
6399 because such sections are not SEC_ALLOC and thus ld.so will
6400 not process them. */
6401 if (unresolved_reloc
6402 && !((input_section->flags & SEC_DEBUGGING) != 0
6403 && h->def_dynamic)
6404 && _bfd_elf_section_offset (output_bfd, info, input_section,
6405 +rel->r_offset) != (bfd_vma) - 1)
6406 {
6407 (*_bfd_error_handler)
6408 (_
6409 ("%B(%A+0x%lx): unresolvable %s relocation against symbol `%s'"),
6410 input_bfd, input_section, (long) rel->r_offset, howto->name,
6411 h->root.root.string);
6412 return FALSE;
6413 }
6414
6415 if (r != bfd_reloc_ok && r != bfd_reloc_continue)
6416 {
c674f5cd
JW		 6417 bfd_reloc_code_real_type real_r_type
6418 = elfNN_aarch64_bfd_reloc_from_type (r_type);
6419
a06ea964
NC		 6420 switch (r)
6421 {
6422 case bfd_reloc_overflow:
fdc3b1b1
JW		 6423 if (!(*info->callbacks->reloc_overflow)
6424 (info, (h ? &h->root : NULL), name, howto->name, (bfd_vma) 0,
6425 input_bfd, input_section, rel->r_offset))
a06ea964 6426 return FALSE;
c674f5cd
JW		 6427 if (real_r_type == BFD_RELOC_AARCH64_LD64_GOTPAGE_LO15
6428 || real_r_type == BFD_RELOC_AARCH64_LD32_GOTPAGE_LO14)
6429 {
6430 (*info->callbacks->warning)
6431 (info,
6432 _("Too many GOT entries for -fpic, "
6433 "please recompile with -fPIC"),
6434 name, input_bfd, input_section, rel->r_offset);
6435 return FALSE;
6436 }
027e9c75
NC		 6437 /* Overflow can occur when a variable is referenced with a type
6438 that has a larger alignment than the type with which it was
6439 declared. eg:
6440 file1.c: extern int foo; int a (void) { return foo; }
6441 file2.c: char bar, foo, baz;
6442 If the variable is placed into a data section at an offset
6443 that is incompatible with the larger alignment requirement
6444 overflow will occur. (Strictly speaking this is not overflow
6445 but rather an alignment problem, but the bfd_reloc_ error
6446 enum does not have a value to cover that situation).
6447
6448 Try to catch this situation here and provide a more helpful
6449 error message to the user. */
6450 if (addend & ((1 << howto->rightshift) - 1)
6451 /* FIXME: Are we testing all of the appropriate reloc
6452 types here ? */
6453 && (real_r_type == BFD_RELOC_AARCH64_LD_LO19_PCREL
6454 || real_r_type == BFD_RELOC_AARCH64_LDST16_LO12
6455 || real_r_type == BFD_RELOC_AARCH64_LDST32_LO12
6456 || real_r_type == BFD_RELOC_AARCH64_LDST64_LO12
6457 || real_r_type == BFD_RELOC_AARCH64_LDST128_LO12))
6458 {
6459 info->callbacks->warning
6460 (info, _("One possible cause of this error is that the \
6461symbol is being referenced in the indicated code as if it had a larger \
6462alignment than was declared where it was defined."),
6463 name, input_bfd, input_section, rel->r_offset);
6464 }
a06ea964
NC		 6465 break;
6466
6467 case bfd_reloc_undefined:
6468 if (!((*info->callbacks->undefined_symbol)
6469 (info, name, input_bfd, input_section,
6470 rel->r_offset, TRUE)))
6471 return FALSE;
6472 break;
6473
6474 case bfd_reloc_outofrange:
6475 error_message = _("out of range");
6476 goto common_error;
6477
6478 case bfd_reloc_notsupported:
6479 error_message = _("unsupported relocation");
6480 goto common_error;
6481
6482 case bfd_reloc_dangerous:
6483 /* error_message should already be set. */
6484 goto common_error;
6485
6486 default:
6487 error_message = _("unknown error");
6488 /* Fall through. */
6489
6490 common_error:
6491 BFD_ASSERT (error_message != NULL);
6492 if (!((*info->callbacks->reloc_dangerous)
6493 (info, error_message, input_bfd, input_section,
6494 rel->r_offset)))
6495 return FALSE;
6496 break;
6497 }
6498 }
027e9c75
NC		 6499
6500 if (!save_addend)
6501 addend = 0;
a06ea964
NC		 6502 }
6503
6504 return TRUE;
6505}
6506
6507/* Set the right machine number. */
6508
6509static bfd_boolean
cec5225b 6510elfNN_aarch64_object_p (bfd *abfd)
a06ea964 6511{
cec5225b
YZ		 6512#if ARCH_SIZE == 32
6513 bfd_default_set_arch_mach (abfd, bfd_arch_aarch64, bfd_mach_aarch64_ilp32);
6514#else
a06ea964 6515 bfd_default_set_arch_mach (abfd, bfd_arch_aarch64, bfd_mach_aarch64);
cec5225b 6516#endif
a06ea964
NC		 6517 return TRUE;
6518}
6519
6520/* Function to keep AArch64 specific flags in the ELF header. */
6521
6522static bfd_boolean
cec5225b 6523elfNN_aarch64_set_private_flags (bfd *abfd, flagword flags)
a06ea964
NC		 6524{
6525 if (elf_flags_init (abfd) && elf_elfheader (abfd)->e_flags != flags)
6526 {
6527 }
6528 else
6529 {
6530 elf_elfheader (abfd)->e_flags = flags;
6531 elf_flags_init (abfd) = TRUE;
6532 }
6533
6534 return TRUE;
6535}
6536
a06ea964
NC		 6537/* Merge backend specific data from an object file to the output
6538 object file when linking. */
6539
6540static bfd_boolean
cec5225b 6541elfNN_aarch64_merge_private_bfd_data (bfd *ibfd, bfd *obfd)
a06ea964
NC		 6542{
6543 flagword out_flags;
6544 flagword in_flags;
6545 bfd_boolean flags_compatible = TRUE;
6546 asection *sec;
6547
6548 /* Check if we have the same endianess. */
6549 if (!_bfd_generic_verify_endian_match (ibfd, obfd))
6550 return FALSE;
6551
6552 if (!is_aarch64_elf (ibfd) || !is_aarch64_elf (obfd))
6553 return TRUE;
6554
6555 /* The input BFD must have had its flags initialised. */
6556 /* The following seems bogus to me -- The flags are initialized in
6557 the assembler but I don't think an elf_flags_init field is
6558 written into the object. */
6559 /* BFD_ASSERT (elf_flags_init (ibfd)); */
6560
6561 in_flags = elf_elfheader (ibfd)->e_flags;
6562 out_flags = elf_elfheader (obfd)->e_flags;
6563
6564 if (!elf_flags_init (obfd))
6565 {
6566 /* If the input is the default architecture and had the default
6567 flags then do not bother setting the flags for the output
6568 architecture, instead allow future merges to do this. If no
6569 future merges ever set these flags then they will retain their
6570 uninitialised values, which surprise surprise, correspond
6571 to the default values. */
6572 if (bfd_get_arch_info (ibfd)->the_default
6573 && elf_elfheader (ibfd)->e_flags == 0)
6574 return TRUE;
6575
6576 elf_flags_init (obfd) = TRUE;
6577 elf_elfheader (obfd)->e_flags = in_flags;
6578
6579 if (bfd_get_arch (obfd) == bfd_get_arch (ibfd)
6580 && bfd_get_arch_info (obfd)->the_default)
6581 return bfd_set_arch_mach (obfd, bfd_get_arch (ibfd),
6582 bfd_get_mach (ibfd));
6583
6584 return TRUE;
6585 }
6586
6587 /* Identical flags must be compatible. */
6588 if (in_flags == out_flags)
6589 return TRUE;
6590
6591 /* Check to see if the input BFD actually contains any sections. If
6592 not, its flags may not have been initialised either, but it
6593 cannot actually cause any incompatiblity. Do not short-circuit
6594 dynamic objects; their section list may be emptied by
6595 elf_link_add_object_symbols.
6596
6597 Also check to see if there are no code sections in the input.
6598 In this case there is no need to check for code specific flags.
6599 XXX - do we need to worry about floating-point format compatability
6600 in data sections ? */
6601 if (!(ibfd->flags & DYNAMIC))
6602 {
6603 bfd_boolean null_input_bfd = TRUE;
6604 bfd_boolean only_data_sections = TRUE;
6605
6606 for (sec = ibfd->sections; sec != NULL; sec = sec->next)
6607 {
6608 if ((bfd_get_section_flags (ibfd, sec)
6609 & (SEC_LOAD | SEC_CODE | SEC_HAS_CONTENTS))
6610 == (SEC_LOAD | SEC_CODE | SEC_HAS_CONTENTS))
6611 only_data_sections = FALSE;
6612
6613 null_input_bfd = FALSE;
6614 break;
6615 }
6616
6617 if (null_input_bfd || only_data_sections)
6618 return TRUE;
6619 }
6620
6621 return flags_compatible;
6622}
6623
6624/* Display the flags field. */
6625
6626static bfd_boolean
cec5225b 6627elfNN_aarch64_print_private_bfd_data (bfd *abfd, void *ptr)
a06ea964
NC		 6628{
6629 FILE *file = (FILE *) ptr;
6630 unsigned long flags;
6631
6632 BFD_ASSERT (abfd != NULL && ptr != NULL);
6633
6634 /* Print normal ELF private data. */
6635 _bfd_elf_print_private_bfd_data (abfd, ptr);
6636
6637 flags = elf_elfheader (abfd)->e_flags;
6638 /* Ignore init flag - it may not be set, despite the flags field
6639 containing valid data. */
6640
6641 /* xgettext:c-format */
6642 fprintf (file, _("private flags = %lx:"), elf_elfheader (abfd)->e_flags);
6643
6644 if (flags)
6645 fprintf (file, _("<Unrecognised flag bits set>"));
6646
6647 fputc ('\n', file);
6648
6649 return TRUE;
6650}
6651
6652/* Update the got entry reference counts for the section being removed. */
6653
6654static bfd_boolean
cec5225b 6655elfNN_aarch64_gc_sweep_hook (bfd *abfd,
cb8af559
NC		 6656 struct bfd_link_info *info,
6657 asection *sec,
6658 const Elf_Internal_Rela * relocs)
a06ea964 6659{
cec5225b 6660 struct elf_aarch64_link_hash_table *htab;
59c108f7
NC		 6661 Elf_Internal_Shdr *symtab_hdr;
6662 struct elf_link_hash_entry **sym_hashes;
cb8af559 6663 struct elf_aarch64_local_symbol *locals;
59c108f7
NC		 6664 const Elf_Internal_Rela *rel, *relend;
6665
0e1862bb 6666 if (bfd_link_relocatable (info))
59c108f7
NC		 6667 return TRUE;
6668
cec5225b 6669 htab = elf_aarch64_hash_table (info);
59c108f7
NC		 6670
6671 if (htab == NULL)
6672 return FALSE;
6673
6674 elf_section_data (sec)->local_dynrel = NULL;
6675
6676 symtab_hdr = &elf_symtab_hdr (abfd);
6677 sym_hashes = elf_sym_hashes (abfd);
6678
cec5225b 6679 locals = elf_aarch64_locals (abfd);
59c108f7
NC		 6680
6681 relend = relocs + sec->reloc_count;
6682 for (rel = relocs; rel < relend; rel++)
6683 {
6684 unsigned long r_symndx;
6685 unsigned int r_type;
6686 struct elf_link_hash_entry *h = NULL;
6687
cec5225b 6688 r_symndx = ELFNN_R_SYM (rel->r_info);
8847944f 6689
59c108f7
NC		 6690 if (r_symndx >= symtab_hdr->sh_info)
6691 {
8847944f 6692
59c108f7
NC		 6693 h = sym_hashes[r_symndx - symtab_hdr->sh_info];
6694 while (h->root.type == bfd_link_hash_indirect
6695 || h->root.type == bfd_link_hash_warning)
6696 h = (struct elf_link_hash_entry *) h->root.u.i.link;
59c108f7
NC		 6697 }
6698 else
6699 {
6700 Elf_Internal_Sym *isym;
6701
8847944f 6702 /* A local symbol. */
59c108f7
NC		 6703 isym = bfd_sym_from_r_symndx (&htab->sym_cache,
6704 abfd, r_symndx);
1419bbe5
WN		 6705
6706 /* Check relocation against local STT_GNU_IFUNC symbol. */
6707 if (isym != NULL
6708 && ELF_ST_TYPE (isym->st_info) == STT_GNU_IFUNC)
6709 {
6710 h = elfNN_aarch64_get_local_sym_hash (htab, abfd, rel, FALSE);
6711 if (h == NULL)
6712 abort ();
6713 }
6714 }
6715
6716 if (h)
6717 {
6718 struct elf_aarch64_link_hash_entry *eh;
6719 struct elf_dyn_relocs **pp;
6720 struct elf_dyn_relocs *p;
6721
6722 eh = (struct elf_aarch64_link_hash_entry *) h;
6723
6724 for (pp = &eh->dyn_relocs; (p = *pp) != NULL; pp = &p->next)
6725 if (p->sec == sec)
6726 {
6727 /* Everything must go for SEC. */
6728 *pp = p->next;
6729 break;
6730 }
59c108f7
NC		 6731 }
6732
cec5225b 6733 r_type = ELFNN_R_TYPE (rel->r_info);
a6bb11b2 6734 switch (aarch64_tls_transition (abfd,info, r_type, h ,r_symndx))
59c108f7 6735 {
a6bb11b2 6736 case BFD_RELOC_AARCH64_ADR_GOT_PAGE:
7bcccb57 6737 case BFD_RELOC_AARCH64_GOT_LD_PREL19:
7018c030 6738 case BFD_RELOC_AARCH64_LD32_GOTPAGE_LO14:
7bcccb57 6739 case BFD_RELOC_AARCH64_LD32_GOT_LO12_NC:
a2e1db00 6740 case BFD_RELOC_AARCH64_LD64_GOTOFF_LO15:
99ad26cb 6741 case BFD_RELOC_AARCH64_LD64_GOTPAGE_LO15:
7bcccb57 6742 case BFD_RELOC_AARCH64_LD64_GOT_LO12_NC:
dc8008f5 6743 case BFD_RELOC_AARCH64_MOVW_GOTOFF_G0_NC:
74a1bfe1 6744 case BFD_RELOC_AARCH64_MOVW_GOTOFF_G1:
7bcccb57
MS		 6745 case BFD_RELOC_AARCH64_TLSDESC_ADD_LO12_NC:
6746 case BFD_RELOC_AARCH64_TLSDESC_ADR_PAGE21:
389b8029 6747 case BFD_RELOC_AARCH64_TLSDESC_ADR_PREL21:
7bcccb57
MS		 6748 case BFD_RELOC_AARCH64_TLSDESC_LD32_LO12_NC:
6749 case BFD_RELOC_AARCH64_TLSDESC_LD64_LO12_NC:
1ada945d 6750 case BFD_RELOC_AARCH64_TLSDESC_LD_PREL19:
0484b454
RL		 6751 case BFD_RELOC_AARCH64_TLSDESC_OFF_G0_NC:
6752 case BFD_RELOC_AARCH64_TLSDESC_OFF_G1:
a6bb11b2 6753 case BFD_RELOC_AARCH64_TLSGD_ADD_LO12_NC:
7bcccb57 6754 case BFD_RELOC_AARCH64_TLSGD_ADR_PAGE21:
3c12b054 6755 case BFD_RELOC_AARCH64_TLSGD_ADR_PREL21:
7ba7cfe4 6756 case BFD_RELOC_AARCH64_TLSGD_MOVW_G0_NC:
94facae3 6757 case BFD_RELOC_AARCH64_TLSGD_MOVW_G1:
a6bb11b2 6758 case BFD_RELOC_AARCH64_TLSIE_ADR_GOTTPREL_PAGE21:
a6bb11b2 6759 case BFD_RELOC_AARCH64_TLSIE_LD32_GOTTPREL_LO12_NC:
7bcccb57 6760 case BFD_RELOC_AARCH64_TLSIE_LD64_GOTTPREL_LO12_NC:
043bf05a 6761 case BFD_RELOC_AARCH64_TLSIE_LD_GOTTPREL_PREL19:
3b957e5b
RL		 6762 case BFD_RELOC_AARCH64_TLSIE_MOVW_GOTTPREL_G0_NC:
6763 case BFD_RELOC_AARCH64_TLSIE_MOVW_GOTTPREL_G1:
73f925cc 6764 case BFD_RELOC_AARCH64_TLSLD_ADD_LO12_NC:
f69e4920 6765 case BFD_RELOC_AARCH64_TLSLD_ADR_PAGE21:
77a69ff8 6766 case BFD_RELOC_AARCH64_TLSLD_ADR_PREL21:
a6bb11b2 6767 if (h != NULL)
59c108f7
NC		 6768 {
6769 if (h->got.refcount > 0)
6770 h->got.refcount -= 1;
1419bbe5
WN		 6771
6772 if (h->type == STT_GNU_IFUNC)
6773 {
6774 if (h->plt.refcount > 0)
6775 h->plt.refcount -= 1;
6776 }
59c108f7 6777 }
cb8af559 6778 else if (locals != NULL)
59c108f7 6779 {
cb8af559
NC		 6780 if (locals[r_symndx].got_refcount > 0)
6781 locals[r_symndx].got_refcount -= 1;
59c108f7
NC		 6782 }
6783 break;
6784
a6bb11b2
YZ		 6785 case BFD_RELOC_AARCH64_CALL26:
6786 case BFD_RELOC_AARCH64_JUMP26:
6787 /* If this is a local symbol then we resolve it
6788 directly without creating a PLT entry. */
59c108f7
NC		 6789 if (h == NULL)
6790 continue;
6791
6792 if (h->plt.refcount > 0)
6793 h->plt.refcount -= 1;
6794 break;
6795
ce336788
JW		 6796 case BFD_RELOC_AARCH64_ADR_HI21_NC_PCREL:
6797 case BFD_RELOC_AARCH64_ADR_HI21_PCREL:
6798 case BFD_RELOC_AARCH64_ADR_LO21_PCREL:
614b09ce
JW		 6799 case BFD_RELOC_AARCH64_MOVW_G0_NC:
6800 case BFD_RELOC_AARCH64_MOVW_G1_NC:
6801 case BFD_RELOC_AARCH64_MOVW_G2_NC:
6802 case BFD_RELOC_AARCH64_MOVW_G3:
30bdf5c8
RL		 6803#if ARCH_SIZE == 64
6804 case BFD_RELOC_AARCH64_32:
6805#endif
a6bb11b2 6806 case BFD_RELOC_AARCH64_NN:
0e1862bb 6807 if (h != NULL && bfd_link_executable (info))
59c108f7
NC		 6808 {
6809 if (h->plt.refcount > 0)
6810 h->plt.refcount -= 1;
6811 }
6812 break;
cec5225b 6813
59c108f7
NC		 6814 default:
6815 break;
6816 }
6817 }
6818
a06ea964
NC		 6819 return TRUE;
6820}
6821
6822/* Adjust a symbol defined by a dynamic object and referenced by a
6823 regular object. The current definition is in some section of the
6824 dynamic object, but we're not including those sections. We have to
6825 change the definition to something the rest of the link can
6826 understand. */
6827
6828static bfd_boolean
cec5225b 6829elfNN_aarch64_adjust_dynamic_symbol (struct bfd_link_info *info,
a06ea964
NC		 6830 struct elf_link_hash_entry *h)
6831{
cec5225b 6832 struct elf_aarch64_link_hash_table *htab;
a06ea964
NC		 6833 asection *s;
6834
6835 /* If this is a function, put it in the procedure linkage table. We
6836 will fill in the contents of the procedure linkage table later,
6837 when we know the address of the .got section. */
1419bbe5 6838 if (h->type == STT_FUNC || h->type == STT_GNU_IFUNC || h->needs_plt)
a06ea964
NC		 6839 {
6840 if (h->plt.refcount <= 0
1419bbe5
WN		 6841 || (h->type != STT_GNU_IFUNC
6842 && (SYMBOL_CALLS_LOCAL (info, h)
6843 || (ELF_ST_VISIBILITY (h->other) != STV_DEFAULT
6844 && h->root.type == bfd_link_hash_undefweak))))
a06ea964
NC		 6845 {
6846 /* This case can occur if we saw a CALL26 reloc in
6847 an input file, but the symbol wasn't referred to
6848 by a dynamic object or all references were
6849 garbage collected. In which case we can end up
6850 resolving. */
6851 h->plt.offset = (bfd_vma) - 1;
6852 h->needs_plt = 0;
6853 }
6854
6855 return TRUE;
6856 }
6857 else
80de0c6d 6858 /* Otherwise, reset to -1. */
a06ea964
NC		 6859 h->plt.offset = (bfd_vma) - 1;
6860
6861
6862 /* If this is a weak symbol, and there is a real definition, the
6863 processor independent code will have arranged for us to see the
6864 real definition first, and we can just use the same value. */
6865 if (h->u.weakdef != NULL)
6866 {
6867 BFD_ASSERT (h->u.weakdef->root.type == bfd_link_hash_defined
6868 || h->u.weakdef->root.type == bfd_link_hash_defweak);
6869 h->root.u.def.section = h->u.weakdef->root.u.def.section;
6870 h->root.u.def.value = h->u.weakdef->root.u.def.value;
6871 if (ELIMINATE_COPY_RELOCS || info->nocopyreloc)
6872 h->non_got_ref = h->u.weakdef->non_got_ref;
6873 return TRUE;
6874 }
6875
6876 /* If we are creating a shared library, we must presume that the
6877 only references to the symbol are via the global offset table.
6878 For such cases we need not do anything here; the relocations will
6879 be handled correctly by relocate_section. */
0e1862bb 6880 if (bfd_link_pic (info))
a06ea964
NC		 6881 return TRUE;
6882
6883 /* If there are no references to this symbol that do not use the
6884 GOT, we don't need to generate a copy reloc. */
6885 if (!h->non_got_ref)
6886 return TRUE;
6887
6888 /* If -z nocopyreloc was given, we won't generate them either. */
6889 if (info->nocopyreloc)
6890 {
6891 h->non_got_ref = 0;
6892 return TRUE;
6893 }
6894
6895 /* We must allocate the symbol in our .dynbss section, which will
6896 become part of the .bss section of the executable. There will be
6897 an entry for this symbol in the .dynsym section. The dynamic
6898 object will contain position independent code, so all references
6899 from the dynamic object to this symbol will go through the global
6900 offset table. The dynamic linker will use the .dynsym entry to
6901 determine the address it must put in the global offset table, so
6902 both the dynamic object and the regular object will refer to the
6903 same memory location for the variable. */
6904
cec5225b 6905 htab = elf_aarch64_hash_table (info);
a06ea964
NC		 6906
6907 /* We must generate a R_AARCH64_COPY reloc to tell the dynamic linker
6908 to copy the initial value out of the dynamic object and into the
6909 runtime process image. */
6910 if ((h->root.u.def.section->flags & SEC_ALLOC) != 0 && h->size != 0)
6911 {
6912 htab->srelbss->size += RELOC_SIZE (htab);
6913 h->needs_copy = 1;
6914 }
6915
6916 s = htab->sdynbss;
6917
6cabe1ea 6918 return _bfd_elf_adjust_dynamic_copy (info, h, s);
a06ea964
NC		 6919
6920}
6921
6922static bfd_boolean
cec5225b 6923elfNN_aarch64_allocate_local_symbols (bfd *abfd, unsigned number)
a06ea964
NC		 6924{
6925 struct elf_aarch64_local_symbol *locals;
cec5225b 6926 locals = elf_aarch64_locals (abfd);
a06ea964
NC		 6927 if (locals == NULL)
6928 {
6929 locals = (struct elf_aarch64_local_symbol *)
6930 bfd_zalloc (abfd, number * sizeof (struct elf_aarch64_local_symbol));
6931 if (locals == NULL)
6932 return FALSE;
cec5225b 6933 elf_aarch64_locals (abfd) = locals;
a06ea964
NC		 6934 }
6935 return TRUE;
6936}
6937
cc0efaa8
MS		 6938/* Create the .got section to hold the global offset table. */
6939
6940static bfd_boolean
6941aarch64_elf_create_got_section (bfd *abfd, struct bfd_link_info *info)
6942{
6943 const struct elf_backend_data *bed = get_elf_backend_data (abfd);
6944 flagword flags;
6945 asection *s;
6946 struct elf_link_hash_entry *h;
6947 struct elf_link_hash_table *htab = elf_hash_table (info);
6948
6949 /* This function may be called more than once. */
6950 s = bfd_get_linker_section (abfd, ".got");
6951 if (s != NULL)
6952 return TRUE;
6953
6954 flags = bed->dynamic_sec_flags;
6955
6956 s = bfd_make_section_anyway_with_flags (abfd,
6957 (bed->rela_plts_and_copies_p
6958 ? ".rela.got" : ".rel.got"),
6959 (bed->dynamic_sec_flags
6960 | SEC_READONLY));
6961 if (s == NULL
6962 || ! bfd_set_section_alignment (abfd, s, bed->s->log_file_align))
6963 return FALSE;
6964 htab->srelgot = s;
6965
6966 s = bfd_make_section_anyway_with_flags (abfd, ".got", flags);
6967 if (s == NULL
6968 || !bfd_set_section_alignment (abfd, s, bed->s->log_file_align))
6969 return FALSE;
6970 htab->sgot = s;
6971 htab->sgot->size += GOT_ENTRY_SIZE;
6972
6973 if (bed->want_got_sym)
6974 {
6975 /* Define the symbol _GLOBAL_OFFSET_TABLE_ at the start of the .got
6976 (or .got.plt) section. We don't do this in the linker script
6977 because we don't want to define the symbol if we are not creating
6978 a global offset table. */
6979 h = _bfd_elf_define_linkage_sym (abfd, info, s,
6980 "_GLOBAL_OFFSET_TABLE_");
6981 elf_hash_table (info)->hgot = h;
6982 if (h == NULL)
6983 return FALSE;
6984 }
6985
6986 if (bed->want_got_plt)
6987 {
6988 s = bfd_make_section_anyway_with_flags (abfd, ".got.plt", flags);
6989 if (s == NULL
6990 || !bfd_set_section_alignment (abfd, s,
6991 bed->s->log_file_align))
6992 return FALSE;
6993 htab->sgotplt = s;
6994 }
6995
6996 /* The first bit of the global offset table is the header. */
6997 s->size += bed->got_header_size;
6998
6999 return TRUE;
7000}
7001
a06ea964
NC		 7002/* Look through the relocs for a section during the first phase. */
7003
7004static bfd_boolean
cec5225b 7005elfNN_aarch64_check_relocs (bfd *abfd, struct bfd_link_info *info,
a06ea964
NC		 7006 asection *sec, const Elf_Internal_Rela *relocs)
7007{
7008 Elf_Internal_Shdr *symtab_hdr;
7009 struct elf_link_hash_entry **sym_hashes;
7010 const Elf_Internal_Rela *rel;
7011 const Elf_Internal_Rela *rel_end;
7012 asection *sreloc;
7013
cec5225b 7014 struct elf_aarch64_link_hash_table *htab;
a06ea964 7015
0e1862bb 7016 if (bfd_link_relocatable (info))
a06ea964
NC		 7017 return TRUE;
7018
7019 BFD_ASSERT (is_aarch64_elf (abfd));
7020
cec5225b 7021 htab = elf_aarch64_hash_table (info);
a06ea964
NC		 7022 sreloc = NULL;
7023
7024 symtab_hdr = &elf_symtab_hdr (abfd);
7025 sym_hashes = elf_sym_hashes (abfd);
a06ea964
NC		 7026
7027 rel_end = relocs + sec->reloc_count;
7028 for (rel = relocs; rel < rel_end; rel++)
7029 {
7030 struct elf_link_hash_entry *h;
7031 unsigned long r_symndx;
7032 unsigned int r_type;
a6bb11b2 7033 bfd_reloc_code_real_type bfd_r_type;
1419bbe5 7034 Elf_Internal_Sym *isym;
a06ea964 7035
cec5225b
YZ		 7036 r_symndx = ELFNN_R_SYM (rel->r_info);
7037 r_type = ELFNN_R_TYPE (rel->r_info);
a06ea964
NC		 7038
7039 if (r_symndx >= NUM_SHDR_ENTRIES (symtab_hdr))
7040 {
7041 (*_bfd_error_handler) (_("%B: bad symbol index: %d"), abfd,
7042 r_symndx);
7043 return FALSE;
7044 }
7045
ed5acf27 7046 if (r_symndx < symtab_hdr->sh_info)
1419bbe5
WN		 7047 {
7048 /* A local symbol. */
7049 isym = bfd_sym_from_r_symndx (&htab->sym_cache,
7050 abfd, r_symndx);
7051 if (isym == NULL)
7052 return FALSE;
7053
7054 /* Check relocation against local STT_GNU_IFUNC symbol. */
7055 if (ELF_ST_TYPE (isym->st_info) == STT_GNU_IFUNC)
7056 {
7057 h = elfNN_aarch64_get_local_sym_hash (htab, abfd, rel,
7058 TRUE);
7059 if (h == NULL)
7060 return FALSE;
7061
7062 /* Fake a STT_GNU_IFUNC symbol. */
7063 h->type = STT_GNU_IFUNC;
7064 h->def_regular = 1;
7065 h->ref_regular = 1;
7066 h->forced_local = 1;
7067 h->root.type = bfd_link_hash_defined;
7068 }
7069 else
7070 h = NULL;
7071 }
a06ea964
NC		 7072 else
7073 {
7074 h = sym_hashes[r_symndx - symtab_hdr->sh_info];
7075 while (h->root.type == bfd_link_hash_indirect
7076 || h->root.type == bfd_link_hash_warning)
7077 h = (struct elf_link_hash_entry *) h->root.u.i.link;
81fbe831
AM		 7078
7079 /* PR15323, ref flags aren't set for references in the same
7080 object. */
7081 h->root.non_ir_ref = 1;
a06ea964
NC		 7082 }
7083
7084 /* Could be done earlier, if h were already available. */
a6bb11b2 7085 bfd_r_type = aarch64_tls_transition (abfd, info, r_type, h, r_symndx);
a06ea964 7086
1419bbe5
WN		 7087 if (h != NULL)
7088 {
7089 /* Create the ifunc sections for static executables. If we
7090 never see an indirect function symbol nor we are building
7091 a static executable, those sections will be empty and
7092 won't appear in output. */
7093 switch (bfd_r_type)
7094 {
7095 default:
7096 break;
7097
ce336788
JW		 7098 case BFD_RELOC_AARCH64_ADD_LO12:
7099 case BFD_RELOC_AARCH64_ADR_GOT_PAGE:
7100 case BFD_RELOC_AARCH64_ADR_HI21_PCREL:
1419bbe5 7101 case BFD_RELOC_AARCH64_CALL26:
ce336788 7102 case BFD_RELOC_AARCH64_GOT_LD_PREL19:
1419bbe5 7103 case BFD_RELOC_AARCH64_JUMP26:
7018c030 7104 case BFD_RELOC_AARCH64_LD32_GOTPAGE_LO14:
1419bbe5 7105 case BFD_RELOC_AARCH64_LD32_GOT_LO12_NC:
a2e1db00 7106 case BFD_RELOC_AARCH64_LD64_GOTOFF_LO15:
99ad26cb 7107 case BFD_RELOC_AARCH64_LD64_GOTPAGE_LO15:
1419bbe5 7108 case BFD_RELOC_AARCH64_LD64_GOT_LO12_NC:
dc8008f5 7109 case BFD_RELOC_AARCH64_MOVW_GOTOFF_G0_NC:
74a1bfe1 7110 case BFD_RELOC_AARCH64_MOVW_GOTOFF_G1:
30bdf5c8
RL		 7111#if ARCH_SIZE == 64
7112 case BFD_RELOC_AARCH64_32:
7113#endif
ce336788 7114 case BFD_RELOC_AARCH64_NN:
1419bbe5
WN		 7115 if (htab->root.dynobj == NULL)
7116 htab->root.dynobj = abfd;
7117 if (!_bfd_elf_create_ifunc_sections (htab->root.dynobj, info))
7118 return FALSE;
7119 break;
7120 }
7121
7122 /* It is referenced by a non-shared object. */
7123 h->ref_regular = 1;
7124 h->root.non_ir_ref = 1;
7125 }
7126
a6bb11b2 7127 switch (bfd_r_type)
a06ea964 7128 {
30bdf5c8
RL		 7129#if ARCH_SIZE == 64
7130 case BFD_RELOC_AARCH64_32:
7131#endif
a6bb11b2 7132 case BFD_RELOC_AARCH64_NN:
a06ea964
NC		 7133
7134 /* We don't need to handle relocs into sections not going into
7135 the "real" output. */
7136 if ((sec->flags & SEC_ALLOC) == 0)
7137 break;
7138
7139 if (h != NULL)
7140 {
0e1862bb 7141 if (!bfd_link_pic (info))
a06ea964
NC		 7142 h->non_got_ref = 1;
7143
7144 h->plt.refcount += 1;
7145 h->pointer_equality_needed = 1;
7146 }
7147
7148 /* No need to do anything if we're not creating a shared
7149 object. */
0e1862bb 7150 if (! bfd_link_pic (info))
a06ea964
NC		 7151 break;
7152
7153 {
7154 struct elf_dyn_relocs *p;
7155 struct elf_dyn_relocs **head;
7156
7157 /* We must copy these reloc types into the output file.
7158 Create a reloc section in dynobj and make room for
7159 this reloc. */
7160 if (sreloc == NULL)
7161 {
7162 if (htab->root.dynobj == NULL)
7163 htab->root.dynobj = abfd;
7164
7165 sreloc = _bfd_elf_make_dynamic_reloc_section
0608afa7 7166 (sec, htab->root.dynobj, LOG_FILE_ALIGN, abfd, /*rela? */ TRUE);
a06ea964
NC		 7167
7168 if (sreloc == NULL)
7169 return FALSE;
7170 }
7171
7172 /* If this is a global symbol, we count the number of
7173 relocations we need for this symbol. */
7174 if (h != NULL)
7175 {
cec5225b
YZ		 7176 struct elf_aarch64_link_hash_entry *eh;
7177 eh = (struct elf_aarch64_link_hash_entry *) h;
a06ea964
NC		 7178 head = &eh->dyn_relocs;
7179 }
7180 else
7181 {
7182 /* Track dynamic relocs needed for local syms too.
7183 We really need local syms available to do this
7184 easily. Oh well. */
7185
7186 asection *s;
7187 void **vpp;
a06ea964
NC		 7188
7189 isym = bfd_sym_from_r_symndx (&htab->sym_cache,
7190 abfd, r_symndx);
7191 if (isym == NULL)
7192 return FALSE;
7193
7194 s = bfd_section_from_elf_index (abfd, isym->st_shndx);
7195 if (s == NULL)
7196 s = sec;
7197
7198 /* Beware of type punned pointers vs strict aliasing
7199 rules. */
7200 vpp = &(elf_section_data (s)->local_dynrel);
7201 head = (struct elf_dyn_relocs **) vpp;
7202 }
7203
7204 p = *head;
7205 if (p == NULL || p->sec != sec)
7206 {
7207 bfd_size_type amt = sizeof *p;
7208 p = ((struct elf_dyn_relocs *)
7209 bfd_zalloc (htab->root.dynobj, amt));
7210 if (p == NULL)
7211 return FALSE;
7212 p->next = *head;
7213 *head = p;
7214 p->sec = sec;
7215 }
7216
7217 p->count += 1;
7218
7219 }
7220 break;
7221
7222 /* RR: We probably want to keep a consistency check that
7223 there are no dangling GOT_PAGE relocs. */
a6bb11b2 7224 case BFD_RELOC_AARCH64_ADR_GOT_PAGE:
7bcccb57 7225 case BFD_RELOC_AARCH64_GOT_LD_PREL19:
7018c030 7226 case BFD_RELOC_AARCH64_LD32_GOTPAGE_LO14:
7bcccb57 7227 case BFD_RELOC_AARCH64_LD32_GOT_LO12_NC:
a2e1db00 7228 case BFD_RELOC_AARCH64_LD64_GOTOFF_LO15:
99ad26cb 7229 case BFD_RELOC_AARCH64_LD64_GOTPAGE_LO15:
7bcccb57 7230 case BFD_RELOC_AARCH64_LD64_GOT_LO12_NC:
dc8008f5 7231 case BFD_RELOC_AARCH64_MOVW_GOTOFF_G0_NC:
74a1bfe1 7232 case BFD_RELOC_AARCH64_MOVW_GOTOFF_G1:
7bcccb57
MS		 7233 case BFD_RELOC_AARCH64_TLSDESC_ADD_LO12_NC:
7234 case BFD_RELOC_AARCH64_TLSDESC_ADR_PAGE21:
389b8029 7235 case BFD_RELOC_AARCH64_TLSDESC_ADR_PREL21:
7bcccb57
MS		 7236 case BFD_RELOC_AARCH64_TLSDESC_LD32_LO12_NC:
7237 case BFD_RELOC_AARCH64_TLSDESC_LD64_LO12_NC:
1ada945d 7238 case BFD_RELOC_AARCH64_TLSDESC_LD_PREL19:
0484b454
RL		 7239 case BFD_RELOC_AARCH64_TLSDESC_OFF_G0_NC:
7240 case BFD_RELOC_AARCH64_TLSDESC_OFF_G1:
a6bb11b2 7241 case BFD_RELOC_AARCH64_TLSGD_ADD_LO12_NC:
7bcccb57 7242 case BFD_RELOC_AARCH64_TLSGD_ADR_PAGE21:
3c12b054 7243 case BFD_RELOC_AARCH64_TLSGD_ADR_PREL21:
7ba7cfe4 7244 case BFD_RELOC_AARCH64_TLSGD_MOVW_G0_NC:
94facae3 7245 case BFD_RELOC_AARCH64_TLSGD_MOVW_G1:
a6bb11b2 7246 case BFD_RELOC_AARCH64_TLSIE_ADR_GOTTPREL_PAGE21:
a6bb11b2 7247 case BFD_RELOC_AARCH64_TLSIE_LD32_GOTTPREL_LO12_NC:
7bcccb57 7248 case BFD_RELOC_AARCH64_TLSIE_LD64_GOTTPREL_LO12_NC:
043bf05a 7249 case BFD_RELOC_AARCH64_TLSIE_LD_GOTTPREL_PREL19:
3b957e5b
RL		 7250 case BFD_RELOC_AARCH64_TLSIE_MOVW_GOTTPREL_G0_NC:
7251 case BFD_RELOC_AARCH64_TLSIE_MOVW_GOTTPREL_G1:
73f925cc 7252 case BFD_RELOC_AARCH64_TLSLD_ADD_LO12_NC:
f69e4920 7253 case BFD_RELOC_AARCH64_TLSLD_ADR_PAGE21:
77a69ff8 7254 case BFD_RELOC_AARCH64_TLSLD_ADR_PREL21:
b7a944fe
RL		 7255 case BFD_RELOC_AARCH64_TLSLE_MOVW_TPREL_G1:
7256 case BFD_RELOC_AARCH64_TLSLE_MOVW_TPREL_G1_NC:
7257 case BFD_RELOC_AARCH64_TLSLE_MOVW_TPREL_G2:
a06ea964
NC		 7258 {
7259 unsigned got_type;
7260 unsigned old_got_type;
7261
a6bb11b2 7262 got_type = aarch64_reloc_got_type (bfd_r_type);
a06ea964
NC		 7263
7264 if (h)
7265 {
7266 h->got.refcount += 1;
cec5225b 7267 old_got_type = elf_aarch64_hash_entry (h)->got_type;
a06ea964
NC		 7268 }
7269 else
7270 {
7271 struct elf_aarch64_local_symbol *locals;
7272
cec5225b 7273 if (!elfNN_aarch64_allocate_local_symbols
a06ea964
NC		 7274 (abfd, symtab_hdr->sh_info))
7275 return FALSE;
7276
cec5225b 7277 locals = elf_aarch64_locals (abfd);
a06ea964
NC		 7278 BFD_ASSERT (r_symndx < symtab_hdr->sh_info);
7279 locals[r_symndx].got_refcount += 1;
7280 old_got_type = locals[r_symndx].got_type;
7281 }
7282
7283 /* If a variable is accessed with both general dynamic TLS
7284 methods, two slots may be created. */
7285 if (GOT_TLS_GD_ANY_P (old_got_type) && GOT_TLS_GD_ANY_P (got_type))
7286 got_type |= old_got_type;
7287
7288 /* We will already have issued an error message if there
7289 is a TLS/non-TLS mismatch, based on the symbol type.
7290 So just combine any TLS types needed. */
7291 if (old_got_type != GOT_UNKNOWN && old_got_type != GOT_NORMAL
7292 && got_type != GOT_NORMAL)
7293 got_type |= old_got_type;
7294
7295 /* If the symbol is accessed by both IE and GD methods, we
7296 are able to relax. Turn off the GD flag, without
7297 messing up with any other kind of TLS types that may be
7298 involved. */
7299 if ((got_type & GOT_TLS_IE) && GOT_TLS_GD_ANY_P (got_type))
7300 got_type &= ~ (GOT_TLSDESC_GD | GOT_TLS_GD);
7301
7302 if (old_got_type != got_type)
7303 {
7304 if (h != NULL)
cec5225b 7305 elf_aarch64_hash_entry (h)->got_type = got_type;
a06ea964
NC		 7306 else
7307 {
7308 struct elf_aarch64_local_symbol *locals;
cec5225b 7309 locals = elf_aarch64_locals (abfd);
a06ea964
NC		 7310 BFD_ASSERT (r_symndx < symtab_hdr->sh_info);
7311 locals[r_symndx].got_type = got_type;
7312 }
7313 }
7314
cc0efaa8
MS		 7315 if (htab->root.dynobj == NULL)
7316 htab->root.dynobj = abfd;
7317 if (! aarch64_elf_create_got_section (htab->root.dynobj, info))
7318 return FALSE;
a06ea964
NC		 7319 break;
7320 }
7321
614b09ce
JW		 7322 case BFD_RELOC_AARCH64_MOVW_G0_NC:
7323 case BFD_RELOC_AARCH64_MOVW_G1_NC:
7324 case BFD_RELOC_AARCH64_MOVW_G2_NC:
7325 case BFD_RELOC_AARCH64_MOVW_G3:
0e1862bb 7326 if (bfd_link_pic (info))
614b09ce
JW		 7327 {
7328 int howto_index = bfd_r_type - BFD_RELOC_AARCH64_RELOC_START;
7329 (*_bfd_error_handler)
7330 (_("%B: relocation %s against `%s' can not be used when making "
7331 "a shared object; recompile with -fPIC"),
7332 abfd, elfNN_aarch64_howto_table[howto_index].name,
7333 (h) ? h->root.root.string : "a local symbol");
7334 bfd_set_error (bfd_error_bad_value);
7335 return FALSE;
7336 }
7337
a6bb11b2
YZ		 7338 case BFD_RELOC_AARCH64_ADR_HI21_NC_PCREL:
7339 case BFD_RELOC_AARCH64_ADR_HI21_PCREL:
7340 case BFD_RELOC_AARCH64_ADR_LO21_PCREL:
0e1862bb 7341 if (h != NULL && bfd_link_executable (info))
a06ea964
NC		 7342 {
7343 /* If this reloc is in a read-only section, we might
7344 need a copy reloc. We can't check reliably at this
7345 stage whether the section is read-only, as input
7346 sections have not yet been mapped to output sections.
7347 Tentatively set the flag for now, and correct in
7348 adjust_dynamic_symbol. */
7349 h->non_got_ref = 1;
7350 h->plt.refcount += 1;
7351 h->pointer_equality_needed = 1;
7352 }
7353 /* FIXME:: RR need to handle these in shared libraries
7354 and essentially bomb out as these being non-PIC
7355 relocations in shared libraries. */
7356 break;
7357
a6bb11b2
YZ		 7358 case BFD_RELOC_AARCH64_CALL26:
7359 case BFD_RELOC_AARCH64_JUMP26:
a06ea964
NC		 7360 /* If this is a local symbol then we resolve it
7361 directly without creating a PLT entry. */
7362 if (h == NULL)
7363 continue;
7364
7365 h->needs_plt = 1;
1419bbe5
WN		 7366 if (h->plt.refcount <= 0)
7367 h->plt.refcount = 1;
7368 else
7369 h->plt.refcount += 1;
a06ea964 7370 break;
a6bb11b2
YZ		 7371
7372 default:
7373 break;
a06ea964
NC		 7374 }
7375 }
a6bb11b2 7376
a06ea964
NC		 7377 return TRUE;
7378}
7379
7380/* Treat mapping symbols as special target symbols. */
7381
7382static bfd_boolean
cec5225b 7383elfNN_aarch64_is_target_special_symbol (bfd *abfd ATTRIBUTE_UNUSED,
a06ea964
NC		 7384 asymbol *sym)
7385{
7386 return bfd_is_aarch64_special_symbol_name (sym->name,
7387 BFD_AARCH64_SPECIAL_SYM_TYPE_ANY);
7388}
7389
7390/* This is a copy of elf_find_function () from elf.c except that
7391 AArch64 mapping symbols are ignored when looking for function names. */
7392
7393static bfd_boolean
7394aarch64_elf_find_function (bfd *abfd ATTRIBUTE_UNUSED,
a06ea964 7395 asymbol **symbols,
fb167eb2 7396 asection *section,
a06ea964
NC		 7397 bfd_vma offset,
7398 const char **filename_ptr,
7399 const char **functionname_ptr)
7400{
7401 const char *filename = NULL;
7402 asymbol *func = NULL;
7403 bfd_vma low_func = 0;
7404 asymbol **p;
7405
7406 for (p = symbols; *p != NULL; p++)
7407 {
7408 elf_symbol_type *q;
7409
7410 q = (elf_symbol_type *) * p;
7411
7412 switch (ELF_ST_TYPE (q->internal_elf_sym.st_info))
7413 {
7414 default:
7415 break;
7416 case STT_FILE:
7417 filename = bfd_asymbol_name (&q->symbol);
7418 break;
7419 case STT_FUNC:
7420 case STT_NOTYPE:
7421 /* Skip mapping symbols. */
7422 if ((q->symbol.flags & BSF_LOCAL)
7423 && (bfd_is_aarch64_special_symbol_name
7424 (q->symbol.name, BFD_AARCH64_SPECIAL_SYM_TYPE_ANY)))
7425 continue;
7426 /* Fall through. */
7427 if (bfd_get_section (&q->symbol) == section
7428 && q->symbol.value >= low_func && q->symbol.value <= offset)
7429 {
7430 func = (asymbol *) q;
7431 low_func = q->symbol.value;
7432 }
7433 break;
7434 }
7435 }
7436
7437 if (func == NULL)
7438 return FALSE;
7439
7440 if (filename_ptr)
7441 *filename_ptr = filename;
7442 if (functionname_ptr)
7443 *functionname_ptr = bfd_asymbol_name (func);
7444
7445 return TRUE;
7446}
7447
7448
7449/* Find the nearest line to a particular section and offset, for error
7450 reporting. This code is a duplicate of the code in elf.c, except
7451 that it uses aarch64_elf_find_function. */
7452
7453static bfd_boolean
cec5225b 7454elfNN_aarch64_find_nearest_line (bfd *abfd,
a06ea964 7455 asymbol **symbols,
fb167eb2 7456 asection *section,
a06ea964
NC		 7457 bfd_vma offset,
7458 const char **filename_ptr,
7459 const char **functionname_ptr,
fb167eb2
AM		 7460 unsigned int *line_ptr,
7461 unsigned int *discriminator_ptr)
a06ea964
NC		 7462{
7463 bfd_boolean found = FALSE;
7464
fb167eb2 7465 if (_bfd_dwarf2_find_nearest_line (abfd, symbols, NULL, section, offset,
a06ea964 7466 filename_ptr, functionname_ptr,
fb167eb2
AM		 7467 line_ptr, discriminator_ptr,
7468 dwarf_debug_sections, 0,
a06ea964
NC		 7469 &elf_tdata (abfd)->dwarf2_find_line_info))
7470 {
7471 if (!*functionname_ptr)
fb167eb2 7472 aarch64_elf_find_function (abfd, symbols, section, offset,
a06ea964
NC		 7473 *filename_ptr ? NULL : filename_ptr,
7474 functionname_ptr);
7475
7476 return TRUE;
7477 }
7478
fb167eb2
AM		 7479 /* Skip _bfd_dwarf1_find_nearest_line since no known AArch64
7480 toolchain uses DWARF1. */
7481
a06ea964
NC		 7482 if (!_bfd_stab_section_find_nearest_line (abfd, symbols, section, offset,
7483 &found, filename_ptr,
7484 functionname_ptr, line_ptr,
7485 &elf_tdata (abfd)->line_info))
7486 return FALSE;
7487
7488 if (found && (*functionname_ptr || *line_ptr))
7489 return TRUE;
7490
7491 if (symbols == NULL)
7492 return FALSE;
7493
fb167eb2 7494 if (!aarch64_elf_find_function (abfd, symbols, section, offset,
a06ea964
NC		 7495 filename_ptr, functionname_ptr))
7496 return FALSE;
7497
7498 *line_ptr = 0;
7499 return TRUE;
7500}
7501
7502static bfd_boolean
cec5225b 7503elfNN_aarch64_find_inliner_info (bfd *abfd,
a06ea964
NC		 7504 const char **filename_ptr,
7505 const char **functionname_ptr,
7506 unsigned int *line_ptr)
7507{
7508 bfd_boolean found;
7509 found = _bfd_dwarf2_find_inliner_info
7510 (abfd, filename_ptr,
7511 functionname_ptr, line_ptr, &elf_tdata (abfd)->dwarf2_find_line_info);
7512 return found;
7513}
7514
7515
7516static void
cec5225b 7517elfNN_aarch64_post_process_headers (bfd *abfd,
1419bbe5 7518 struct bfd_link_info *link_info)
a06ea964
NC		 7519{
7520 Elf_Internal_Ehdr *i_ehdrp; /* ELF file header, internal form. */
7521
7522 i_ehdrp = elf_elfheader (abfd);
a06ea964 7523 i_ehdrp->e_ident[EI_ABIVERSION] = AARCH64_ELF_ABI_VERSION;
1419bbe5 7524
78245035 7525 _bfd_elf_post_process_headers (abfd, link_info);
a06ea964
NC		 7526}
7527
7528static enum elf_reloc_type_class
cec5225b 7529elfNN_aarch64_reloc_type_class (const struct bfd_link_info *info ATTRIBUTE_UNUSED,
7e612e98
AM		 7530 const asection *rel_sec ATTRIBUTE_UNUSED,
7531 const Elf_Internal_Rela *rela)
a06ea964 7532{
cec5225b 7533 switch ((int) ELFNN_R_TYPE (rela->r_info))
a06ea964 7534 {
a6bb11b2 7535 case AARCH64_R (RELATIVE):
a06ea964 7536 return reloc_class_relative;
a6bb11b2 7537 case AARCH64_R (JUMP_SLOT):
a06ea964 7538 return reloc_class_plt;
a6bb11b2 7539 case AARCH64_R (COPY):
a06ea964
NC		 7540 return reloc_class_copy;
7541 default:
7542 return reloc_class_normal;
7543 }
7544}
7545
a06ea964
NC		 7546/* Handle an AArch64 specific section when reading an object file. This is
7547 called when bfd_section_from_shdr finds a section with an unknown
7548 type. */
7549
7550static bfd_boolean
cec5225b 7551elfNN_aarch64_section_from_shdr (bfd *abfd,
a06ea964
NC		 7552 Elf_Internal_Shdr *hdr,
7553 const char *name, int shindex)
7554{
7555 /* There ought to be a place to keep ELF backend specific flags, but
7556 at the moment there isn't one. We just keep track of the
7557 sections by their name, instead. Fortunately, the ABI gives
7558 names for all the AArch64 specific sections, so we will probably get
7559 away with this. */
7560 switch (hdr->sh_type)
7561 {
7562 case SHT_AARCH64_ATTRIBUTES:
7563 break;
7564
7565 default:
7566 return FALSE;
7567 }
7568
7569 if (!_bfd_elf_make_section_from_shdr (abfd, hdr, name, shindex))
7570 return FALSE;
7571
7572 return TRUE;
7573}
7574
7575/* A structure used to record a list of sections, independently
7576 of the next and prev fields in the asection structure. */
7577typedef struct section_list
7578{
7579 asection *sec;
7580 struct section_list *next;
7581 struct section_list *prev;
7582}
7583section_list;
7584
7585/* Unfortunately we need to keep a list of sections for which
7586 an _aarch64_elf_section_data structure has been allocated. This
cec5225b 7587 is because it is possible for functions like elfNN_aarch64_write_section
a06ea964
NC		 7588 to be called on a section which has had an elf_data_structure
7589 allocated for it (and so the used_by_bfd field is valid) but
7590 for which the AArch64 extended version of this structure - the
7591 _aarch64_elf_section_data structure - has not been allocated. */
7592static section_list *sections_with_aarch64_elf_section_data = NULL;
7593
7594static void
7595record_section_with_aarch64_elf_section_data (asection *sec)
7596{
7597 struct section_list *entry;
7598
7599 entry = bfd_malloc (sizeof (*entry));
7600 if (entry == NULL)
7601 return;
7602 entry->sec = sec;
7603 entry->next = sections_with_aarch64_elf_section_data;
7604 entry->prev = NULL;
7605 if (entry->next != NULL)
7606 entry->next->prev = entry;
7607 sections_with_aarch64_elf_section_data = entry;
7608}
7609
7610static struct section_list *
7611find_aarch64_elf_section_entry (asection *sec)
7612{
7613 struct section_list *entry;
7614 static struct section_list *last_entry = NULL;
7615
7616 /* This is a short cut for the typical case where the sections are added
7617 to the sections_with_aarch64_elf_section_data list in forward order and
7618 then looked up here in backwards order. This makes a real difference
7619 to the ld-srec/sec64k.exp linker test. */
7620 entry = sections_with_aarch64_elf_section_data;
7621 if (last_entry != NULL)
7622 {
7623 if (last_entry->sec == sec)
7624 entry = last_entry;
7625 else if (last_entry->next != NULL && last_entry->next->sec == sec)
7626 entry = last_entry->next;
7627 }
7628
7629 for (; entry; entry = entry->next)
7630 if (entry->sec == sec)
7631 break;
7632
7633 if (entry)
7634 /* Record the entry prior to this one - it is the entry we are
7635 most likely to want to locate next time. Also this way if we
7636 have been called from
7637 unrecord_section_with_aarch64_elf_section_data () we will not
7638 be caching a pointer that is about to be freed. */
7639 last_entry = entry->prev;
7640
7641 return entry;
7642}
7643
7644static void
7645unrecord_section_with_aarch64_elf_section_data (asection *sec)
7646{
7647 struct section_list *entry;
7648
7649 entry = find_aarch64_elf_section_entry (sec);
7650
7651 if (entry)
7652 {
7653 if (entry->prev != NULL)
7654 entry->prev->next = entry->next;
7655 if (entry->next != NULL)
7656 entry->next->prev = entry->prev;
7657 if (entry == sections_with_aarch64_elf_section_data)
7658 sections_with_aarch64_elf_section_data = entry->next;
7659 free (entry);
7660 }
7661}
7662
7663
7664typedef struct
7665{
7666 void *finfo;
7667 struct bfd_link_info *info;
7668 asection *sec;
7669 int sec_shndx;
7670 int (*func) (void *, const char *, Elf_Internal_Sym *,
7671 asection *, struct elf_link_hash_entry *);
7672} output_arch_syminfo;
7673
7674enum map_symbol_type
7675{
7676 AARCH64_MAP_INSN,
7677 AARCH64_MAP_DATA
7678};
7679
7680
7681/* Output a single mapping symbol. */
7682
7683static bfd_boolean
cec5225b 7684elfNN_aarch64_output_map_sym (output_arch_syminfo *osi,
a06ea964
NC		 7685 enum map_symbol_type type, bfd_vma offset)
7686{
7687 static const char *names[2] = { "$x", "$d" };
7688 Elf_Internal_Sym sym;
7689
7690 sym.st_value = (osi->sec->output_section->vma
7691 + osi->sec->output_offset + offset);
7692 sym.st_size = 0;
7693 sym.st_other = 0;
7694 sym.st_info = ELF_ST_INFO (STB_LOCAL, STT_NOTYPE);
7695 sym.st_shndx = osi->sec_shndx;
7696 return osi->func (osi->finfo, names[type], &sym, osi->sec, NULL) == 1;
7697}
7698
a06ea964
NC		 7699/* Output a single local symbol for a generated stub. */
7700
7701static bfd_boolean
cec5225b 7702elfNN_aarch64_output_stub_sym (output_arch_syminfo *osi, const char *name,
a06ea964
NC		 7703 bfd_vma offset, bfd_vma size)
7704{
7705 Elf_Internal_Sym sym;
7706
7707 sym.st_value = (osi->sec->output_section->vma
7708 + osi->sec->output_offset + offset);
7709 sym.st_size = size;
7710 sym.st_other = 0;
7711 sym.st_info = ELF_ST_INFO (STB_LOCAL, STT_FUNC);
7712 sym.st_shndx = osi->sec_shndx;
7713 return osi->func (osi->finfo, name, &sym, osi->sec, NULL) == 1;
7714}
7715
7716static bfd_boolean
7717aarch64_map_one_stub (struct bfd_hash_entry *gen_entry, void *in_arg)
7718{
cec5225b 7719 struct elf_aarch64_stub_hash_entry *stub_entry;
a06ea964
NC		 7720 asection *stub_sec;
7721 bfd_vma addr;
7722 char *stub_name;
7723 output_arch_syminfo *osi;
7724
7725 /* Massage our args to the form they really have. */
cec5225b 7726 stub_entry = (struct elf_aarch64_stub_hash_entry *) gen_entry;
a06ea964
NC		 7727 osi = (output_arch_syminfo *) in_arg;
7728
7729 stub_sec = stub_entry->stub_sec;
7730
7731 /* Ensure this stub is attached to the current section being
7732 processed. */
7733 if (stub_sec != osi->sec)
7734 return TRUE;
7735
7736 addr = (bfd_vma) stub_entry->stub_offset;
7737
7738 stub_name = stub_entry->output_name;
7739
7740 switch (stub_entry->stub_type)
7741 {
7742 case aarch64_stub_adrp_branch:
cec5225b 7743 if (!elfNN_aarch64_output_stub_sym (osi, stub_name, addr,
a06ea964
NC		 7744 sizeof (aarch64_adrp_branch_stub)))
7745 return FALSE;
cec5225b 7746 if (!elfNN_aarch64_output_map_sym (osi, AARCH64_MAP_INSN, addr))
a06ea964
NC		 7747 return FALSE;
7748 break;
7749 case aarch64_stub_long_branch:
cec5225b 7750 if (!elfNN_aarch64_output_stub_sym
a06ea964
NC		 7751 (osi, stub_name, addr, sizeof (aarch64_long_branch_stub)))
7752 return FALSE;
cec5225b 7753 if (!elfNN_aarch64_output_map_sym (osi, AARCH64_MAP_INSN, addr))
a06ea964 7754 return FALSE;
cec5225b 7755 if (!elfNN_aarch64_output_map_sym (osi, AARCH64_MAP_DATA, addr + 16))
a06ea964
NC		 7756 return FALSE;
7757 break;
68fcca92
JW		 7758 case aarch64_stub_erratum_835769_veneer:
7759 if (!elfNN_aarch64_output_stub_sym (osi, stub_name, addr,
7760 sizeof (aarch64_erratum_835769_stub)))
7761 return FALSE;
7762 if (!elfNN_aarch64_output_map_sym (osi, AARCH64_MAP_INSN, addr))
7763 return FALSE;
7764 break;
4106101c
MS		 7765 case aarch64_stub_erratum_843419_veneer:
7766 if (!elfNN_aarch64_output_stub_sym (osi, stub_name, addr,
7767 sizeof (aarch64_erratum_843419_stub)))
7768 return FALSE;
7769 if (!elfNN_aarch64_output_map_sym (osi, AARCH64_MAP_INSN, addr))
7770 return FALSE;
7771 break;
7772
a06ea964 7773 default:
8e2fe09f 7774 abort ();
a06ea964
NC		 7775 }
7776
7777 return TRUE;
7778}
7779
7780/* Output mapping symbols for linker generated sections. */
7781
7782static bfd_boolean
cec5225b 7783elfNN_aarch64_output_arch_local_syms (bfd *output_bfd,
a06ea964
NC		 7784 struct bfd_link_info *info,
7785 void *finfo,
7786 int (*func) (void *, const char *,
7787 Elf_Internal_Sym *,
7788 asection *,
7789 struct elf_link_hash_entry
7790 *))
7791{
7792 output_arch_syminfo osi;
cec5225b 7793 struct elf_aarch64_link_hash_table *htab;
a06ea964 7794
cec5225b 7795 htab = elf_aarch64_hash_table (info);
a06ea964
NC		 7796
7797 osi.finfo = finfo;
7798 osi.info = info;
7799 osi.func = func;
7800
7801 /* Long calls stubs. */
7802 if (htab->stub_bfd && htab->stub_bfd->sections)
7803 {
7804 asection *stub_sec;
7805
7806 for (stub_sec = htab->stub_bfd->sections;
7807 stub_sec != NULL; stub_sec = stub_sec->next)
7808 {
7809 /* Ignore non-stub sections. */
7810 if (!strstr (stub_sec->name, STUB_SUFFIX))
7811 continue;
7812
7813 osi.sec = stub_sec;
7814
7815 osi.sec_shndx = _bfd_elf_section_from_bfd_section
7816 (output_bfd, osi.sec->output_section);
7817
61865519
MS		 7818 /* The first instruction in a stub is always a branch. */
7819 if (!elfNN_aarch64_output_map_sym (&osi, AARCH64_MAP_INSN, 0))
7820 return FALSE;
7821
a06ea964
NC		 7822 bfd_hash_traverse (&htab->stub_hash_table, aarch64_map_one_stub,
7823 &osi);
7824 }
7825 }
7826
7827 /* Finally, output mapping symbols for the PLT. */
7828 if (!htab->root.splt || htab->root.splt->size == 0)
7829 return TRUE;
7830
a06ea964
NC		 7831 osi.sec_shndx = _bfd_elf_section_from_bfd_section
7832 (output_bfd, htab->root.splt->output_section);
7833 osi.sec = htab->root.splt;
7834
73524045 7835 elfNN_aarch64_output_map_sym (&osi, AARCH64_MAP_INSN, 0);
a06ea964
NC		 7836
7837 return TRUE;
7838
7839}
7840
7841/* Allocate target specific section data. */
7842
7843static bfd_boolean
cec5225b 7844elfNN_aarch64_new_section_hook (bfd *abfd, asection *sec)
a06ea964
NC		 7845{
7846 if (!sec->used_by_bfd)
7847 {
7848 _aarch64_elf_section_data *sdata;
7849 bfd_size_type amt = sizeof (*sdata);
7850
7851 sdata = bfd_zalloc (abfd, amt);
7852 if (sdata == NULL)
7853 return FALSE;
7854 sec->used_by_bfd = sdata;
7855 }
7856
7857 record_section_with_aarch64_elf_section_data (sec);
7858
7859 return _bfd_elf_new_section_hook (abfd, sec);
7860}
7861
7862
7863static void
7864unrecord_section_via_map_over_sections (bfd *abfd ATTRIBUTE_UNUSED,
7865 asection *sec,
7866 void *ignore ATTRIBUTE_UNUSED)
7867{
7868 unrecord_section_with_aarch64_elf_section_data (sec);
7869}
7870
7871static bfd_boolean
cec5225b 7872elfNN_aarch64_close_and_cleanup (bfd *abfd)
a06ea964
NC		 7873{
7874 if (abfd->sections)
7875 bfd_map_over_sections (abfd,
7876 unrecord_section_via_map_over_sections, NULL);
7877
7878 return _bfd_elf_close_and_cleanup (abfd);
7879}
7880
7881static bfd_boolean
cec5225b 7882elfNN_aarch64_bfd_free_cached_info (bfd *abfd)
a06ea964
NC		 7883{
7884 if (abfd->sections)
7885 bfd_map_over_sections (abfd,
7886 unrecord_section_via_map_over_sections, NULL);
7887
7888 return _bfd_free_cached_info (abfd);
7889}
7890
a06ea964
NC		 7891/* Create dynamic sections. This is different from the ARM backend in that
7892 the got, plt, gotplt and their relocation sections are all created in the
7893 standard part of the bfd elf backend. */
7894
7895static bfd_boolean
cec5225b 7896elfNN_aarch64_create_dynamic_sections (bfd *dynobj,
a06ea964
NC		 7897 struct bfd_link_info *info)
7898{
cec5225b 7899 struct elf_aarch64_link_hash_table *htab;
cc0efaa8
MS		 7900
7901 /* We need to create .got section. */
7902 if (!aarch64_elf_create_got_section (dynobj, info))
7903 return FALSE;
a06ea964
NC		 7904
7905 if (!_bfd_elf_create_dynamic_sections (dynobj, info))
7906 return FALSE;
7907
cec5225b 7908 htab = elf_aarch64_hash_table (info);
a06ea964 7909 htab->sdynbss = bfd_get_linker_section (dynobj, ".dynbss");
0e1862bb 7910 if (!bfd_link_pic (info))
a06ea964
NC		 7911 htab->srelbss = bfd_get_linker_section (dynobj, ".rela.bss");
7912
0e1862bb 7913 if (!htab->sdynbss || (!bfd_link_pic (info) && !htab->srelbss))
a06ea964
NC		 7914 abort ();
7915
a06ea964
NC		 7916 return TRUE;
7917}
7918
7919
7920/* Allocate space in .plt, .got and associated reloc sections for
7921 dynamic relocs. */
7922
7923static bfd_boolean
cec5225b 7924elfNN_aarch64_allocate_dynrelocs (struct elf_link_hash_entry *h, void *inf)
a06ea964
NC		 7925{
7926 struct bfd_link_info *info;
cec5225b
YZ		 7927 struct elf_aarch64_link_hash_table *htab;
7928 struct elf_aarch64_link_hash_entry *eh;
a06ea964
NC		 7929 struct elf_dyn_relocs *p;
7930
7931 /* An example of a bfd_link_hash_indirect symbol is versioned
7932 symbol. For example: __gxx_personality_v0(bfd_link_hash_indirect)
7933 -> __gxx_personality_v0(bfd_link_hash_defined)
7934
7935 There is no need to process bfd_link_hash_indirect symbols here
7936 because we will also be presented with the concrete instance of
cec5225b 7937 the symbol and elfNN_aarch64_copy_indirect_symbol () will have been
a06ea964
NC		 7938 called to copy all relevant data from the generic to the concrete
7939 symbol instance.
7940 */
7941 if (h->root.type == bfd_link_hash_indirect)
7942 return TRUE;
7943
7944 if (h->root.type == bfd_link_hash_warning)
7945 h = (struct elf_link_hash_entry *) h->root.u.i.link;
7946
7947 info = (struct bfd_link_info *) inf;
cec5225b 7948 htab = elf_aarch64_hash_table (info);
a06ea964 7949
1419bbe5
WN		 7950 /* Since STT_GNU_IFUNC symbol must go through PLT, we handle it
7951 here if it is defined and referenced in a non-shared object. */
7952 if (h->type == STT_GNU_IFUNC
7953 && h->def_regular)
7954 return TRUE;
7955 else if (htab->root.dynamic_sections_created && h->plt.refcount > 0)
a06ea964
NC		 7956 {
7957 /* Make sure this symbol is output as a dynamic symbol.
7958 Undefined weak syms won't yet be marked as dynamic. */
7959 if (h->dynindx == -1 && !h->forced_local)
7960 {
7961 if (!bfd_elf_link_record_dynamic_symbol (info, h))
7962 return FALSE;
7963 }
7964
0e1862bb 7965 if (bfd_link_pic (info) || WILL_CALL_FINISH_DYNAMIC_SYMBOL (1, 0, h))
a06ea964
NC		 7966 {
7967 asection *s = htab->root.splt;
7968
7969 /* If this is the first .plt entry, make room for the special
7970 first entry. */
7971 if (s->size == 0)
7972 s->size += htab->plt_header_size;
7973
7974 h->plt.offset = s->size;
7975
7976 /* If this symbol is not defined in a regular file, and we are
7977 not generating a shared library, then set the symbol to this
7978 location in the .plt. This is required to make function
7979 pointers compare as equal between the normal executable and
7980 the shared library. */
0e1862bb 7981 if (!bfd_link_pic (info) && !h->def_regular)
a06ea964
NC		 7982 {
7983 h->root.u.def.section = s;
7984 h->root.u.def.value = h->plt.offset;
7985 }
7986
7987 /* Make room for this entry. For now we only create the
7988 small model PLT entries. We later need to find a way
7989 of relaxing into these from the large model PLT entries. */
7990 s->size += PLT_SMALL_ENTRY_SIZE;
7991
7992 /* We also need to make an entry in the .got.plt section, which
7993 will be placed in the .got section by the linker script. */
7994 htab->root.sgotplt->size += GOT_ENTRY_SIZE;
7995
7996 /* We also need to make an entry in the .rela.plt section. */
7997 htab->root.srelplt->size += RELOC_SIZE (htab);
7998
7999 /* We need to ensure that all GOT entries that serve the PLT
8000 are consecutive with the special GOT slots [0] [1] and
8001 [2]. Any addtional relocations, such as
8002 R_AARCH64_TLSDESC, must be placed after the PLT related
8003 entries. We abuse the reloc_count such that during
8004 sizing we adjust reloc_count to indicate the number of
8005 PLT related reserved entries. In subsequent phases when
8006 filling in the contents of the reloc entries, PLT related
8007 entries are placed by computing their PLT index (0
8008 .. reloc_count). While other none PLT relocs are placed
8009 at the slot indicated by reloc_count and reloc_count is
8010 updated. */
8011
8012 htab->root.srelplt->reloc_count++;
8013 }
8014 else
8015 {
8016 h->plt.offset = (bfd_vma) - 1;
8017 h->needs_plt = 0;
8018 }
8019 }
8020 else
8021 {
8022 h->plt.offset = (bfd_vma) - 1;
8023 h->needs_plt = 0;
8024 }
8025
cec5225b 8026 eh = (struct elf_aarch64_link_hash_entry *) h;
a06ea964
NC		 8027 eh->tlsdesc_got_jump_table_offset = (bfd_vma) - 1;
8028
8029 if (h->got.refcount > 0)
8030 {
8031 bfd_boolean dyn;
cec5225b 8032 unsigned got_type = elf_aarch64_hash_entry (h)->got_type;
a06ea964
NC		 8033
8034 h->got.offset = (bfd_vma) - 1;
8035
8036 dyn = htab->root.dynamic_sections_created;
8037
8038 /* Make sure this symbol is output as a dynamic symbol.
8039 Undefined weak syms won't yet be marked as dynamic. */
8040 if (dyn && h->dynindx == -1 && !h->forced_local)
8041 {
8042 if (!bfd_elf_link_record_dynamic_symbol (info, h))
8043 return FALSE;
8044 }
8045
8046 if (got_type == GOT_UNKNOWN)
8047 {
8048 }
8049 else if (got_type == GOT_NORMAL)
8050 {
8051 h->got.offset = htab->root.sgot->size;
8052 htab->root.sgot->size += GOT_ENTRY_SIZE;
8053 if ((ELF_ST_VISIBILITY (h->other) == STV_DEFAULT
8054 || h->root.type != bfd_link_hash_undefweak)
0e1862bb 8055 && (bfd_link_pic (info)
a06ea964
NC		 8056 || WILL_CALL_FINISH_DYNAMIC_SYMBOL (dyn, 0, h)))
8057 {
8058 htab->root.srelgot->size += RELOC_SIZE (htab);
8059 }
8060 }
8061 else
8062 {
8063 int indx;
8064 if (got_type & GOT_TLSDESC_GD)
8065 {
8066 eh->tlsdesc_got_jump_table_offset =
8067 (htab->root.sgotplt->size
8068 - aarch64_compute_jump_table_size (htab));
8069 htab->root.sgotplt->size += GOT_ENTRY_SIZE * 2;
8070 h->got.offset = (bfd_vma) - 2;
8071 }
8072
8073 if (got_type & GOT_TLS_GD)
8074 {
8075 h->got.offset = htab->root.sgot->size;
8076 htab->root.sgot->size += GOT_ENTRY_SIZE * 2;
8077 }
8078
8079 if (got_type & GOT_TLS_IE)
8080 {
8081 h->got.offset = htab->root.sgot->size;
8082 htab->root.sgot->size += GOT_ENTRY_SIZE;
8083 }
8084
8085 indx = h && h->dynindx != -1 ? h->dynindx : 0;
8086 if ((ELF_ST_VISIBILITY (h->other) == STV_DEFAULT
8087 || h->root.type != bfd_link_hash_undefweak)
0e1862bb 8088 && (bfd_link_pic (info)
a06ea964
NC		 8089 || indx != 0
8090 || WILL_CALL_FINISH_DYNAMIC_SYMBOL (dyn, 0, h)))
8091 {
8092 if (got_type & GOT_TLSDESC_GD)
8093 {
8094 htab->root.srelplt->size += RELOC_SIZE (htab);
8095 /* Note reloc_count not incremented here! We have
8096 already adjusted reloc_count for this relocation
8097 type. */
8098
8099 /* TLSDESC PLT is now needed, but not yet determined. */
8100 htab->tlsdesc_plt = (bfd_vma) - 1;
8101 }
8102
8103 if (got_type & GOT_TLS_GD)
8104 htab->root.srelgot->size += RELOC_SIZE (htab) * 2;
8105
8106 if (got_type & GOT_TLS_IE)
8107 htab->root.srelgot->size += RELOC_SIZE (htab);
8108 }
8109 }
8110 }
8111 else
8112 {
8113 h->got.offset = (bfd_vma) - 1;
8114 }
8115
8116 if (eh->dyn_relocs == NULL)
8117 return TRUE;
8118
8119 /* In the shared -Bsymbolic case, discard space allocated for
8120 dynamic pc-relative relocs against symbols which turn out to be
8121 defined in regular objects. For the normal shared case, discard
8122 space for pc-relative relocs that have become local due to symbol
8123 visibility changes. */
8124
0e1862bb 8125 if (bfd_link_pic (info))
a06ea964
NC		 8126 {
8127 /* Relocs that use pc_count are those that appear on a call
8128 insn, or certain REL relocs that can generated via assembly.
8129 We want calls to protected symbols to resolve directly to the
8130 function rather than going via the plt. If people want
8131 function pointer comparisons to work as expected then they
8132 should avoid writing weird assembly. */
8133 if (SYMBOL_CALLS_LOCAL (info, h))
8134 {
8135 struct elf_dyn_relocs **pp;
8136
8137 for (pp = &eh->dyn_relocs; (p = *pp) != NULL;)
8138 {
8139 p->count -= p->pc_count;
8140 p->pc_count = 0;
8141 if (p->count == 0)
8142 *pp = p->next;
8143 else
8144 pp = &p->next;
8145 }
8146 }
8147
8148 /* Also discard relocs on undefined weak syms with non-default
8149 visibility. */
8150 if (eh->dyn_relocs != NULL && h->root.type == bfd_link_hash_undefweak)
8151 {
8152 if (ELF_ST_VISIBILITY (h->other) != STV_DEFAULT)
8153 eh->dyn_relocs = NULL;
8154
8155 /* Make sure undefined weak symbols are output as a dynamic
8156 symbol in PIEs. */
8157 else if (h->dynindx == -1
8158 && !h->forced_local
8159 && !bfd_elf_link_record_dynamic_symbol (info, h))
8160 return FALSE;
8161 }
8162
8163 }
8164 else if (ELIMINATE_COPY_RELOCS)
8165 {
8166 /* For the non-shared case, discard space for relocs against
8167 symbols which turn out to need copy relocs or are not
8168 dynamic. */
8169
8170 if (!h->non_got_ref
8171 && ((h->def_dynamic
8172 && !h->def_regular)
8173 || (htab->root.dynamic_sections_created
8174 && (h->root.type == bfd_link_hash_undefweak
8175 || h->root.type == bfd_link_hash_undefined))))
8176 {
8177 /* Make sure this symbol is output as a dynamic symbol.
8178 Undefined weak syms won't yet be marked as dynamic. */
8179 if (h->dynindx == -1
8180 && !h->forced_local
8181 && !bfd_elf_link_record_dynamic_symbol (info, h))
8182 return FALSE;
8183
8184 /* If that succeeded, we know we'll be keeping all the
8185 relocs. */
8186 if (h->dynindx != -1)
8187 goto keep;
8188 }
8189
8190 eh->dyn_relocs = NULL;
8191
8192 keep:;
8193 }
8194
8195 /* Finally, allocate space. */
8196 for (p = eh->dyn_relocs; p != NULL; p = p->next)
8197 {
8198 asection *sreloc;
8199
8200 sreloc = elf_section_data (p->sec)->sreloc;
8201
8202 BFD_ASSERT (sreloc != NULL);
8203
8204 sreloc->size += p->count * RELOC_SIZE (htab);
8205 }
8206
8207 return TRUE;
8208}
8209
1419bbe5
WN		 8210/* Allocate space in .plt, .got and associated reloc sections for
8211 ifunc dynamic relocs. */
8212
8213static bfd_boolean
8214elfNN_aarch64_allocate_ifunc_dynrelocs (struct elf_link_hash_entry *h,
8215 void *inf)
8216{
8217 struct bfd_link_info *info;
8218 struct elf_aarch64_link_hash_table *htab;
8219 struct elf_aarch64_link_hash_entry *eh;
8220
8221 /* An example of a bfd_link_hash_indirect symbol is versioned
8222 symbol. For example: __gxx_personality_v0(bfd_link_hash_indirect)
8223 -> __gxx_personality_v0(bfd_link_hash_defined)
8224
8225 There is no need to process bfd_link_hash_indirect symbols here
8226 because we will also be presented with the concrete instance of
8227 the symbol and elfNN_aarch64_copy_indirect_symbol () will have been
8228 called to copy all relevant data from the generic to the concrete
8229 symbol instance.
8230 */
8231 if (h->root.type == bfd_link_hash_indirect)
8232 return TRUE;
8233
8234 if (h->root.type == bfd_link_hash_warning)
8235 h = (struct elf_link_hash_entry *) h->root.u.i.link;
8236
8237 info = (struct bfd_link_info *) inf;
8238 htab = elf_aarch64_hash_table (info);
8239
8240 eh = (struct elf_aarch64_link_hash_entry *) h;
8241
8242 /* Since STT_GNU_IFUNC symbol must go through PLT, we handle it
8243 here if it is defined and referenced in a non-shared object. */
8244 if (h->type == STT_GNU_IFUNC
8245 && h->def_regular)
8246 return _bfd_elf_allocate_ifunc_dyn_relocs (info, h,
8247 &eh->dyn_relocs,
8248 htab->plt_entry_size,
8249 htab->plt_header_size,
8250 GOT_ENTRY_SIZE);
8251 return TRUE;
8252}
8253
8254/* Allocate space in .plt, .got and associated reloc sections for
8255 local dynamic relocs. */
8256
8257static bfd_boolean
8258elfNN_aarch64_allocate_local_dynrelocs (void **slot, void *inf)
8259{
8260 struct elf_link_hash_entry *h
8261 = (struct elf_link_hash_entry *) *slot;
8262
8263 if (h->type != STT_GNU_IFUNC
8264 || !h->def_regular
8265 || !h->ref_regular
8266 || !h->forced_local
8267 || h->root.type != bfd_link_hash_defined)
8268 abort ();
8269
8270 return elfNN_aarch64_allocate_dynrelocs (h, inf);
8271}
8272
8273/* Allocate space in .plt, .got and associated reloc sections for
8274 local ifunc dynamic relocs. */
8275
8276static bfd_boolean
8277elfNN_aarch64_allocate_local_ifunc_dynrelocs (void **slot, void *inf)
8278{
8279 struct elf_link_hash_entry *h
8280 = (struct elf_link_hash_entry *) *slot;
8281
8282 if (h->type != STT_GNU_IFUNC
8283 || !h->def_regular
8284 || !h->ref_regular
8285 || !h->forced_local
8286 || h->root.type != bfd_link_hash_defined)
8287 abort ();
8288
8289 return elfNN_aarch64_allocate_ifunc_dynrelocs (h, inf);
8290}
a06ea964 8291
c2170589
JW		 8292/* Find any dynamic relocs that apply to read-only sections. */
8293
8294static bfd_boolean
8295aarch64_readonly_dynrelocs (struct elf_link_hash_entry * h, void * inf)
8296{
8297 struct elf_aarch64_link_hash_entry * eh;
8298 struct elf_dyn_relocs * p;
8299
8300 eh = (struct elf_aarch64_link_hash_entry *) h;
8301 for (p = eh->dyn_relocs; p != NULL; p = p->next)
8302 {
8303 asection *s = p->sec;
8304
8305 if (s != NULL && (s->flags & SEC_READONLY) != 0)
8306 {
8307 struct bfd_link_info *info = (struct bfd_link_info *) inf;
8308
8309 info->flags |= DF_TEXTREL;
8310
8311 /* Not an error, just cut short the traversal. */
8312 return FALSE;
8313 }
8314 }
8315 return TRUE;
8316}
8317
a06ea964
NC		 8318/* This is the most important function of all . Innocuosly named
8319 though ! */
8320static bfd_boolean
cec5225b 8321elfNN_aarch64_size_dynamic_sections (bfd *output_bfd ATTRIBUTE_UNUSED,
a06ea964
NC		 8322 struct bfd_link_info *info)
8323{
cec5225b 8324 struct elf_aarch64_link_hash_table *htab;
a06ea964
NC		 8325 bfd *dynobj;
8326 asection *s;
8327 bfd_boolean relocs;
8328 bfd *ibfd;
8329
cec5225b 8330 htab = elf_aarch64_hash_table ((info));
a06ea964
NC		 8331 dynobj = htab->root.dynobj;
8332
8333 BFD_ASSERT (dynobj != NULL);
8334
8335 if (htab->root.dynamic_sections_created)
8336 {
9b8b325a 8337 if (bfd_link_executable (info) && !info->nointerp)
a06ea964
NC		 8338 {
8339 s = bfd_get_linker_section (dynobj, ".interp");
8340 if (s == NULL)
8341 abort ();
8342 s->size = sizeof ELF_DYNAMIC_INTERPRETER;
8343 s->contents = (unsigned char *) ELF_DYNAMIC_INTERPRETER;
8344 }
8345 }
8346
8347 /* Set up .got offsets for local syms, and space for local dynamic
8348 relocs. */
c72f2fb2 8349 for (ibfd = info->input_bfds; ibfd != NULL; ibfd = ibfd->link.next)
a06ea964
NC		 8350 {
8351 struct elf_aarch64_local_symbol *locals = NULL;
8352 Elf_Internal_Shdr *symtab_hdr;
8353 asection *srel;
8354 unsigned int i;
8355
8356 if (!is_aarch64_elf (ibfd))
8357 continue;
8358
8359 for (s = ibfd->sections; s != NULL; s = s->next)
8360 {
8361 struct elf_dyn_relocs *p;
8362
8363 for (p = (struct elf_dyn_relocs *)
8364 (elf_section_data (s)->local_dynrel); p != NULL; p = p->next)
8365 {
8366 if (!bfd_is_abs_section (p->sec)
8367 && bfd_is_abs_section (p->sec->output_section))
8368 {
8369 /* Input section has been discarded, either because
8370 it is a copy of a linkonce section or due to
8371 linker script /DISCARD/, so we'll be discarding
8372 the relocs too. */
8373 }
8374 else if (p->count != 0)
8375 {
8376 srel = elf_section_data (p->sec)->sreloc;
8377 srel->size += p->count * RELOC_SIZE (htab);
8378 if ((p->sec->output_section->flags & SEC_READONLY) != 0)
8379 info->flags |= DF_TEXTREL;
8380 }
8381 }
8382 }
8383
cec5225b 8384 locals = elf_aarch64_locals (ibfd);
a06ea964
NC		 8385 if (!locals)
8386 continue;
8387
8388 symtab_hdr = &elf_symtab_hdr (ibfd);
8389 srel = htab->root.srelgot;
8390 for (i = 0; i < symtab_hdr->sh_info; i++)
8391 {
8392 locals[i].got_offset = (bfd_vma) - 1;
8393 locals[i].tlsdesc_got_jump_table_offset = (bfd_vma) - 1;
8394 if (locals[i].got_refcount > 0)
8395 {
8396 unsigned got_type = locals[i].got_type;
8397 if (got_type & GOT_TLSDESC_GD)
8398 {
8399 locals[i].tlsdesc_got_jump_table_offset =
8400 (htab->root.sgotplt->size
8401 - aarch64_compute_jump_table_size (htab));
8402 htab->root.sgotplt->size += GOT_ENTRY_SIZE * 2;
8403 locals[i].got_offset = (bfd_vma) - 2;
8404 }
8405
8406 if (got_type & GOT_TLS_GD)
8407 {
8408 locals[i].got_offset = htab->root.sgot->size;
8409 htab->root.sgot->size += GOT_ENTRY_SIZE * 2;
8410 }
8411
b53b1bed
JW		 8412 if (got_type & GOT_TLS_IE
8413 || got_type & GOT_NORMAL)
a06ea964
NC		 8414 {
8415 locals[i].got_offset = htab->root.sgot->size;
8416 htab->root.sgot->size += GOT_ENTRY_SIZE;
8417 }
8418
8419 if (got_type == GOT_UNKNOWN)
8420 {
8421 }
8422
0e1862bb 8423 if (bfd_link_pic (info))
a06ea964
NC		 8424 {
8425 if (got_type & GOT_TLSDESC_GD)
8426 {
8427 htab->root.srelplt->size += RELOC_SIZE (htab);
8428 /* Note RELOC_COUNT not incremented here! */
8429 htab->tlsdesc_plt = (bfd_vma) - 1;
8430 }
8431
8432 if (got_type & GOT_TLS_GD)
8433 htab->root.srelgot->size += RELOC_SIZE (htab) * 2;
8434
b53b1bed
JW		 8435 if (got_type & GOT_TLS_IE
8436 || got_type & GOT_NORMAL)
a06ea964
NC		 8437 htab->root.srelgot->size += RELOC_SIZE (htab);
8438 }
8439 }
8440 else
8441 {
8442 locals[i].got_refcount = (bfd_vma) - 1;
8443 }
8444 }
8445 }
8446
8447
8448 /* Allocate global sym .plt and .got entries, and space for global
8449 sym dynamic relocs. */
cec5225b 8450 elf_link_hash_traverse (&htab->root, elfNN_aarch64_allocate_dynrelocs,
a06ea964
NC		 8451 info);
8452
1419bbe5
WN		 8453 /* Allocate global ifunc sym .plt and .got entries, and space for global
8454 ifunc sym dynamic relocs. */
8455 elf_link_hash_traverse (&htab->root, elfNN_aarch64_allocate_ifunc_dynrelocs,
8456 info);
8457
8458 /* Allocate .plt and .got entries, and space for local symbols. */
8459 htab_traverse (htab->loc_hash_table,
8460 elfNN_aarch64_allocate_local_dynrelocs,
8461 info);
8462
8463 /* Allocate .plt and .got entries, and space for local ifunc symbols. */
8464 htab_traverse (htab->loc_hash_table,
8465 elfNN_aarch64_allocate_local_ifunc_dynrelocs,
8466 info);
a06ea964
NC		 8467
8468 /* For every jump slot reserved in the sgotplt, reloc_count is
8469 incremented. However, when we reserve space for TLS descriptors,
8470 it's not incremented, so in order to compute the space reserved
8471 for them, it suffices to multiply the reloc count by the jump
8472 slot size. */
8473
8474 if (htab->root.srelplt)
8847944f 8475 htab->sgotplt_jump_table_size = aarch64_compute_jump_table_size (htab);
a06ea964
NC		 8476
8477 if (htab->tlsdesc_plt)
8478 {
8479 if (htab->root.splt->size == 0)
8480 htab->root.splt->size += PLT_ENTRY_SIZE;
8481
8482 htab->tlsdesc_plt = htab->root.splt->size;
8483 htab->root.splt->size += PLT_TLSDESC_ENTRY_SIZE;
8484
8485 /* If we're not using lazy TLS relocations, don't generate the
8486 GOT entry required. */
8487 if (!(info->flags & DF_BIND_NOW))
8488 {
8489 htab->dt_tlsdesc_got = htab->root.sgot->size;
8490 htab->root.sgot->size += GOT_ENTRY_SIZE;
8491 }
8492 }
8493
68fcca92 8494 /* Init mapping symbols information to use later to distingush between
4106101c
MS		 8495 code and data while scanning for errata. */
8496 if (htab->fix_erratum_835769 || htab->fix_erratum_843419)
68fcca92
JW		 8497 for (ibfd = info->input_bfds; ibfd != NULL; ibfd = ibfd->link.next)
8498 {
8499 if (!is_aarch64_elf (ibfd))
8500 continue;
8501 bfd_elfNN_aarch64_init_maps (ibfd);
8502 }
8503
a06ea964
NC		 8504 /* We now have determined the sizes of the various dynamic sections.
8505 Allocate memory for them. */
8506 relocs = FALSE;
8507 for (s = dynobj->sections; s != NULL; s = s->next)
8508 {
8509 if ((s->flags & SEC_LINKER_CREATED) == 0)
8510 continue;
8511
8512 if (s == htab->root.splt
8513 || s == htab->root.sgot
8514 || s == htab->root.sgotplt
8515 || s == htab->root.iplt
8516 || s == htab->root.igotplt || s == htab->sdynbss)
8517 {
8518 /* Strip this section if we don't need it; see the
8519 comment below. */
8520 }
8521 else if (CONST_STRNEQ (bfd_get_section_name (dynobj, s), ".rela"))
8522 {
8523 if (s->size != 0 && s != htab->root.srelplt)
8524 relocs = TRUE;
8525
8526 /* We use the reloc_count field as a counter if we need
8527 to copy relocs into the output file. */
8528 if (s != htab->root.srelplt)
8529 s->reloc_count = 0;
8530 }
8531 else
8532 {
8533 /* It's not one of our sections, so don't allocate space. */
8534 continue;
8535 }
8536
8537 if (s->size == 0)
8538 {
8539 /* If we don't need this section, strip it from the
8540 output file. This is mostly to handle .rela.bss and
8541 .rela.plt. We must create both sections in
8542 create_dynamic_sections, because they must be created
8543 before the linker maps input sections to output
8544 sections. The linker does that before
8545 adjust_dynamic_symbol is called, and it is that
8546 function which decides whether anything needs to go
8547 into these sections. */
8548
8549 s->flags |= SEC_EXCLUDE;
8550 continue;
8551 }
8552
8553 if ((s->flags & SEC_HAS_CONTENTS) == 0)
8554 continue;
8555
8556 /* Allocate memory for the section contents. We use bfd_zalloc
8557 here in case unused entries are not reclaimed before the
8558 section's contents are written out. This should not happen,
8559 but this way if it does, we get a R_AARCH64_NONE reloc instead
8560 of garbage. */
8561 s->contents = (bfd_byte *) bfd_zalloc (dynobj, s->size);
8562 if (s->contents == NULL)
8563 return FALSE;
8564 }
8565
8566 if (htab->root.dynamic_sections_created)
8567 {
8568 /* Add some entries to the .dynamic section. We fill in the
cec5225b 8569 values later, in elfNN_aarch64_finish_dynamic_sections, but we
a06ea964
NC		 8570 must add the entries now so that we get the correct size for
8571 the .dynamic section. The DT_DEBUG entry is filled in by the
8572 dynamic linker and used by the debugger. */
8573#define add_dynamic_entry(TAG, VAL) \
8574 _bfd_elf_add_dynamic_entry (info, TAG, VAL)
8575
0e1862bb 8576 if (bfd_link_executable (info))
a06ea964
NC		 8577 {
8578 if (!add_dynamic_entry (DT_DEBUG, 0))
8579 return FALSE;
8580 }
8581
8582 if (htab->root.splt->size != 0)
8583 {
8584 if (!add_dynamic_entry (DT_PLTGOT, 0)
8585 || !add_dynamic_entry (DT_PLTRELSZ, 0)
8586 || !add_dynamic_entry (DT_PLTREL, DT_RELA)
8587 || !add_dynamic_entry (DT_JMPREL, 0))
8588 return FALSE;
8589
8590 if (htab->tlsdesc_plt
8591 && (!add_dynamic_entry (DT_TLSDESC_PLT, 0)
8592 || !add_dynamic_entry (DT_TLSDESC_GOT, 0)))
8593 return FALSE;
8594 }
8595
8596 if (relocs)
8597 {
8598 if (!add_dynamic_entry (DT_RELA, 0)
8599 || !add_dynamic_entry (DT_RELASZ, 0)
8600 || !add_dynamic_entry (DT_RELAENT, RELOC_SIZE (htab)))
8601 return FALSE;
8602
8603 /* If any dynamic relocs apply to a read-only section,
8604 then we need a DT_TEXTREL entry. */
c2170589
JW		 8605 if ((info->flags & DF_TEXTREL) == 0)
8606 elf_link_hash_traverse (& htab->root, aarch64_readonly_dynrelocs,
8607 info);
8608
a06ea964
NC		 8609 if ((info->flags & DF_TEXTREL) != 0)
8610 {
8611 if (!add_dynamic_entry (DT_TEXTREL, 0))
8612 return FALSE;
8613 }
8614 }
8615 }
8616#undef add_dynamic_entry
8617
8618 return TRUE;
a06ea964
NC		 8619}
8620
8621static inline void
caed7120
YZ		 8622elf_aarch64_update_plt_entry (bfd *output_bfd,
8623 bfd_reloc_code_real_type r_type,
8624 bfd_byte *plt_entry, bfd_vma value)
a06ea964 8625{
caed7120
YZ		 8626 reloc_howto_type *howto = elfNN_aarch64_howto_from_bfd_reloc (r_type);
8627
8628 _bfd_aarch64_elf_put_addend (output_bfd, plt_entry, r_type, howto, value);
a06ea964
NC		 8629}
8630
8631static void
cec5225b
YZ		 8632elfNN_aarch64_create_small_pltn_entry (struct elf_link_hash_entry *h,
8633 struct elf_aarch64_link_hash_table
1419bbe5
WN		 8634 *htab, bfd *output_bfd,
8635 struct bfd_link_info *info)
a06ea964
NC		 8636{
8637 bfd_byte *plt_entry;
8638 bfd_vma plt_index;
8639 bfd_vma got_offset;
8640 bfd_vma gotplt_entry_address;
8641 bfd_vma plt_entry_address;
8642 Elf_Internal_Rela rela;
8643 bfd_byte *loc;
1419bbe5
WN		 8644 asection *plt, *gotplt, *relplt;
8645
8646 /* When building a static executable, use .iplt, .igot.plt and
8647 .rela.iplt sections for STT_GNU_IFUNC symbols. */
8648 if (htab->root.splt != NULL)
8649 {
8650 plt = htab->root.splt;
8651 gotplt = htab->root.sgotplt;
8652 relplt = htab->root.srelplt;
8653 }
8654 else
8655 {
8656 plt = htab->root.iplt;
8657 gotplt = htab->root.igotplt;
8658 relplt = htab->root.irelplt;
8659 }
8660
8661 /* Get the index in the procedure linkage table which
8662 corresponds to this symbol. This is the index of this symbol
8663 in all the symbols for which we are making plt entries. The
8664 first entry in the procedure linkage table is reserved.
a06ea964 8665
1419bbe5
WN		 8666 Get the offset into the .got table of the entry that
8667 corresponds to this function. Each .got entry is GOT_ENTRY_SIZE
8668 bytes. The first three are reserved for the dynamic linker.
692e2b8b 8669
1419bbe5
WN		 8670 For static executables, we don't reserve anything. */
8671
8672 if (plt == htab->root.splt)
8673 {
8674 plt_index = (h->plt.offset - htab->plt_header_size) / htab->plt_entry_size;
8675 got_offset = (plt_index + 3) * GOT_ENTRY_SIZE;
8676 }
8677 else
8678 {
8679 plt_index = h->plt.offset / htab->plt_entry_size;
8680 got_offset = plt_index * GOT_ENTRY_SIZE;
8681 }
8682
8683 plt_entry = plt->contents + h->plt.offset;
8684 plt_entry_address = plt->output_section->vma
f44a1f8e 8685 + plt->output_offset + h->plt.offset;
1419bbe5
WN		 8686 gotplt_entry_address = gotplt->output_section->vma +
8687 gotplt->output_offset + got_offset;
a06ea964
NC		 8688
8689 /* Copy in the boiler-plate for the PLTn entry. */
cec5225b 8690 memcpy (plt_entry, elfNN_aarch64_small_plt_entry, PLT_SMALL_ENTRY_SIZE);
a06ea964
NC		 8691
8692 /* Fill in the top 21 bits for this: ADRP x16, PLT_GOT + n * 8.
8693 ADRP: ((PG(S+A)-PG(P)) >> 12) & 0x1fffff */
caed7120
YZ		 8694 elf_aarch64_update_plt_entry (output_bfd, BFD_RELOC_AARCH64_ADR_HI21_PCREL,
8695 plt_entry,
8696 PG (gotplt_entry_address) -
8697 PG (plt_entry_address));
a06ea964
NC		 8698
8699 /* Fill in the lo12 bits for the load from the pltgot. */
caed7120
YZ		 8700 elf_aarch64_update_plt_entry (output_bfd, BFD_RELOC_AARCH64_LDSTNN_LO12,
8701 plt_entry + 4,
8702 PG_OFFSET (gotplt_entry_address));
a06ea964 8703
9aff4b7a 8704 /* Fill in the lo12 bits for the add from the pltgot entry. */
caed7120
YZ		 8705 elf_aarch64_update_plt_entry (output_bfd, BFD_RELOC_AARCH64_ADD_LO12,
8706 plt_entry + 8,
8707 PG_OFFSET (gotplt_entry_address));
a06ea964
NC		 8708
8709 /* All the GOTPLT Entries are essentially initialized to PLT0. */
cec5225b 8710 bfd_put_NN (output_bfd,
1419bbe5
WN		 8711 plt->output_section->vma + plt->output_offset,
8712 gotplt->contents + got_offset);
a06ea964 8713
a06ea964 8714 rela.r_offset = gotplt_entry_address;
1419bbe5
WN		 8715
8716 if (h->dynindx == -1
0e1862bb 8717 || ((bfd_link_executable (info)
1419bbe5
WN		 8718 || ELF_ST_VISIBILITY (h->other) != STV_DEFAULT)
8719 && h->def_regular
8720 && h->type == STT_GNU_IFUNC))
8721 {
8722 /* If an STT_GNU_IFUNC symbol is locally defined, generate
8723 R_AARCH64_IRELATIVE instead of R_AARCH64_JUMP_SLOT. */
8724 rela.r_info = ELFNN_R_INFO (0, AARCH64_R (IRELATIVE));
8725 rela.r_addend = (h->root.u.def.value
8726 + h->root.u.def.section->output_section->vma
8727 + h->root.u.def.section->output_offset);
8728 }
8729 else
8730 {
8731 /* Fill in the entry in the .rela.plt section. */
8732 rela.r_info = ELFNN_R_INFO (h->dynindx, AARCH64_R (JUMP_SLOT));
8733 rela.r_addend = 0;
8734 }
a06ea964
NC		 8735
8736 /* Compute the relocation entry to used based on PLT index and do
8737 not adjust reloc_count. The reloc_count has already been adjusted
8738 to account for this entry. */
1419bbe5 8739 loc = relplt->contents + plt_index * RELOC_SIZE (htab);
cec5225b 8740 bfd_elfNN_swap_reloca_out (output_bfd, &rela, loc);
a06ea964
NC		 8741}
8742
8743/* Size sections even though they're not dynamic. We use it to setup
8744 _TLS_MODULE_BASE_, if needed. */
8745
8746static bfd_boolean
cec5225b 8747elfNN_aarch64_always_size_sections (bfd *output_bfd,
a06ea964
NC		 8748 struct bfd_link_info *info)
8749{
8750 asection *tls_sec;
8751
0e1862bb 8752 if (bfd_link_relocatable (info))
a06ea964
NC		 8753 return TRUE;
8754
8755 tls_sec = elf_hash_table (info)->tls_sec;
8756
8757 if (tls_sec)
8758 {
8759 struct elf_link_hash_entry *tlsbase;
8760
8761 tlsbase = elf_link_hash_lookup (elf_hash_table (info),
8762 "_TLS_MODULE_BASE_", TRUE, TRUE, FALSE);
8763
8764 if (tlsbase)
8765 {
8766 struct bfd_link_hash_entry *h = NULL;
8767 const struct elf_backend_data *bed =
8768 get_elf_backend_data (output_bfd);
8769
8770 if (!(_bfd_generic_link_add_one_symbol
8771 (info, output_bfd, "_TLS_MODULE_BASE_", BSF_LOCAL,
8772 tls_sec, 0, NULL, FALSE, bed->collect, &h)))
8773 return FALSE;
8774
8775 tlsbase->type = STT_TLS;
8776 tlsbase = (struct elf_link_hash_entry *) h;
8777 tlsbase->def_regular = 1;
8778 tlsbase->other = STV_HIDDEN;
8779 (*bed->elf_backend_hide_symbol) (info, tlsbase, TRUE);
8780 }
8781 }
8782
8783 return TRUE;
8784}
8785
8786/* Finish up dynamic symbol handling. We set the contents of various
8787 dynamic sections here. */
8788static bfd_boolean
cec5225b 8789elfNN_aarch64_finish_dynamic_symbol (bfd *output_bfd,
a06ea964
NC		 8790 struct bfd_link_info *info,
8791 struct elf_link_hash_entry *h,
8792 Elf_Internal_Sym *sym)
8793{
cec5225b
YZ		 8794 struct elf_aarch64_link_hash_table *htab;
8795 htab = elf_aarch64_hash_table (info);
a06ea964
NC		 8796
8797 if (h->plt.offset != (bfd_vma) - 1)
8798 {
1419bbe5
WN		 8799 asection *plt, *gotplt, *relplt;
8800
a06ea964
NC		 8801 /* This symbol has an entry in the procedure linkage table. Set
8802 it up. */
8803
1419bbe5
WN		 8804 /* When building a static executable, use .iplt, .igot.plt and
8805 .rela.iplt sections for STT_GNU_IFUNC symbols. */
8806 if (htab->root.splt != NULL)
8807 {
8808 plt = htab->root.splt;
8809 gotplt = htab->root.sgotplt;
8810 relplt = htab->root.srelplt;
8811 }
8812 else
8813 {
8814 plt = htab->root.iplt;
8815 gotplt = htab->root.igotplt;
8816 relplt = htab->root.irelplt;
8817 }
8818
8819 /* This symbol has an entry in the procedure linkage table. Set
8820 it up. */
8821 if ((h->dynindx == -1
0e1862bb 8822 && !((h->forced_local || bfd_link_executable (info))
1419bbe5
WN		 8823 && h->def_regular
8824 && h->type == STT_GNU_IFUNC))
8825 || plt == NULL
8826 || gotplt == NULL
8827 || relplt == NULL)
a06ea964
NC		 8828 abort ();
8829
1419bbe5 8830 elfNN_aarch64_create_small_pltn_entry (h, htab, output_bfd, info);
a06ea964
NC		 8831 if (!h->def_regular)
8832 {
8833 /* Mark the symbol as undefined, rather than as defined in
46b87d49 8834 the .plt section. */
a06ea964 8835 sym->st_shndx = SHN_UNDEF;
46b87d49
WN		 8836 /* If the symbol is weak we need to clear the value.
8837 Otherwise, the PLT entry would provide a definition for
8838 the symbol even if the symbol wasn't defined anywhere,
8839 and so the symbol would never be NULL. Leave the value if
8840 there were any relocations where pointer equality matters
8841 (this is a clue for the dynamic linker, to make function
8842 pointer comparisons work between an application and shared
8843 library). */
8844 if (!h->ref_regular_nonweak || !h->pointer_equality_needed)
8845 sym->st_value = 0;
a06ea964
NC		 8846 }
8847 }
8848
8849 if (h->got.offset != (bfd_vma) - 1
cec5225b 8850 && elf_aarch64_hash_entry (h)->got_type == GOT_NORMAL)
a06ea964
NC		 8851 {
8852 Elf_Internal_Rela rela;
8853 bfd_byte *loc;
8854
8855 /* This symbol has an entry in the global offset table. Set it
8856 up. */
8857 if (htab->root.sgot == NULL || htab->root.srelgot == NULL)
8858 abort ();
8859
8860 rela.r_offset = (htab->root.sgot->output_section->vma
8861 + htab->root.sgot->output_offset
8862 + (h->got.offset & ~(bfd_vma) 1));
8863
49206388
WN		 8864 if (h->def_regular
8865 && h->type == STT_GNU_IFUNC)
8866 {
0e1862bb 8867 if (bfd_link_pic (info))
49206388
WN		 8868 {
8869 /* Generate R_AARCH64_GLOB_DAT. */
8870 goto do_glob_dat;
8871 }
8872 else
8873 {
8874 asection *plt;
8875
8876 if (!h->pointer_equality_needed)
8877 abort ();
8878
8879 /* For non-shared object, we can't use .got.plt, which
8880 contains the real function address if we need pointer
8881 equality. We load the GOT entry with the PLT entry. */
8882 plt = htab->root.splt ? htab->root.splt : htab->root.iplt;
8883 bfd_put_NN (output_bfd, (plt->output_section->vma
8884 + plt->output_offset
8885 + h->plt.offset),
8886 htab->root.sgot->contents
8887 + (h->got.offset & ~(bfd_vma) 1));
8888 return TRUE;
8889 }
8890 }
0e1862bb 8891 else if (bfd_link_pic (info) && SYMBOL_REFERENCES_LOCAL (info, h))
a06ea964
NC		 8892 {
8893 if (!h->def_regular)
8894 return FALSE;
8895
8896 BFD_ASSERT ((h->got.offset & 1) != 0);
a6bb11b2 8897 rela.r_info = ELFNN_R_INFO (0, AARCH64_R (RELATIVE));
a06ea964
NC		 8898 rela.r_addend = (h->root.u.def.value
8899 + h->root.u.def.section->output_section->vma
8900 + h->root.u.def.section->output_offset);
8901 }
8902 else
8903 {
49206388 8904do_glob_dat:
a06ea964 8905 BFD_ASSERT ((h->got.offset & 1) == 0);
cec5225b 8906 bfd_put_NN (output_bfd, (bfd_vma) 0,
a06ea964 8907 htab->root.sgot->contents + h->got.offset);
a6bb11b2 8908 rela.r_info = ELFNN_R_INFO (h->dynindx, AARCH64_R (GLOB_DAT));
a06ea964
NC		 8909 rela.r_addend = 0;
8910 }
8911
8912 loc = htab->root.srelgot->contents;
8913 loc += htab->root.srelgot->reloc_count++ * RELOC_SIZE (htab);
cec5225b 8914 bfd_elfNN_swap_reloca_out (output_bfd, &rela, loc);
a06ea964
NC		 8915 }
8916
8917 if (h->needs_copy)
8918 {
8919 Elf_Internal_Rela rela;
8920 bfd_byte *loc;
8921
8922 /* This symbol needs a copy reloc. Set it up. */
8923
8924 if (h->dynindx == -1
8925 || (h->root.type != bfd_link_hash_defined
8926 && h->root.type != bfd_link_hash_defweak)
8927 || htab->srelbss == NULL)
8928 abort ();
8929
8930 rela.r_offset = (h->root.u.def.value
8931 + h->root.u.def.section->output_section->vma
8932 + h->root.u.def.section->output_offset);
a6bb11b2 8933 rela.r_info = ELFNN_R_INFO (h->dynindx, AARCH64_R (COPY));
a06ea964
NC		 8934 rela.r_addend = 0;
8935 loc = htab->srelbss->contents;
8936 loc += htab->srelbss->reloc_count++ * RELOC_SIZE (htab);
cec5225b 8937 bfd_elfNN_swap_reloca_out (output_bfd, &rela, loc);
a06ea964
NC		 8938 }
8939
8940 /* Mark _DYNAMIC and _GLOBAL_OFFSET_TABLE_ as absolute. SYM may
8941 be NULL for local symbols. */
8942 if (sym != NULL
9637f6ef 8943 && (h == elf_hash_table (info)->hdynamic
a06ea964
NC		 8944 || h == elf_hash_table (info)->hgot))
8945 sym->st_shndx = SHN_ABS;
8946
8947 return TRUE;
8948}
8949
1419bbe5
WN		 8950/* Finish up local dynamic symbol handling. We set the contents of
8951 various dynamic sections here. */
8952
8953static bfd_boolean
8954elfNN_aarch64_finish_local_dynamic_symbol (void **slot, void *inf)
8955{
8956 struct elf_link_hash_entry *h
8957 = (struct elf_link_hash_entry *) *slot;
8958 struct bfd_link_info *info
8959 = (struct bfd_link_info *) inf;
8960
8961 return elfNN_aarch64_finish_dynamic_symbol (info->output_bfd,
8962 info, h, NULL);
8963}
8964
a06ea964 8965static void
cec5225b
YZ		 8966elfNN_aarch64_init_small_plt0_entry (bfd *output_bfd ATTRIBUTE_UNUSED,
8967 struct elf_aarch64_link_hash_table
a06ea964
NC		 8968 *htab)
8969{
8970 /* Fill in PLT0. Fixme:RR Note this doesn't distinguish between
8971 small and large plts and at the minute just generates
8972 the small PLT. */
8973
cec5225b 8974 /* PLT0 of the small PLT looks like this in ELF64 -
a06ea964
NC		 8975 stp x16, x30, [sp, #-16]! // Save the reloc and lr on stack.
8976 adrp x16, PLT_GOT + 16 // Get the page base of the GOTPLT
8977 ldr x17, [x16, #:lo12:PLT_GOT+16] // Load the address of the
8978 // symbol resolver
8979 add x16, x16, #:lo12:PLT_GOT+16 // Load the lo12 bits of the
8980 // GOTPLT entry for this.
8981 br x17
cec5225b
YZ		 8982 PLT0 will be slightly different in ELF32 due to different got entry
8983 size.
a06ea964 8984 */
caed7120 8985 bfd_vma plt_got_2nd_ent; /* Address of GOT[2]. */
a06ea964
NC		 8986 bfd_vma plt_base;
8987
8988
cec5225b 8989 memcpy (htab->root.splt->contents, elfNN_aarch64_small_plt0_entry,
a06ea964
NC		 8990 PLT_ENTRY_SIZE);
8991 elf_section_data (htab->root.splt->output_section)->this_hdr.sh_entsize =
8992 PLT_ENTRY_SIZE;
8993
caed7120
YZ		 8994 plt_got_2nd_ent = (htab->root.sgotplt->output_section->vma
8995 + htab->root.sgotplt->output_offset
8996 + GOT_ENTRY_SIZE * 2);
a06ea964
NC		 8997
8998 plt_base = htab->root.splt->output_section->vma +
f44a1f8e 8999 htab->root.splt->output_offset;
a06ea964
NC		 9000
9001 /* Fill in the top 21 bits for this: ADRP x16, PLT_GOT + n * 8.
9002 ADRP: ((PG(S+A)-PG(P)) >> 12) & 0x1fffff */
caed7120
YZ		 9003 elf_aarch64_update_plt_entry (output_bfd, BFD_RELOC_AARCH64_ADR_HI21_PCREL,
9004 htab->root.splt->contents + 4,
9005 PG (plt_got_2nd_ent) - PG (plt_base + 4));
a06ea964 9006
caed7120
YZ		 9007 elf_aarch64_update_plt_entry (output_bfd, BFD_RELOC_AARCH64_LDSTNN_LO12,
9008 htab->root.splt->contents + 8,
9009 PG_OFFSET (plt_got_2nd_ent));
a06ea964 9010
caed7120
YZ		 9011 elf_aarch64_update_plt_entry (output_bfd, BFD_RELOC_AARCH64_ADD_LO12,
9012 htab->root.splt->contents + 12,
9013 PG_OFFSET (plt_got_2nd_ent));
a06ea964
NC		 9014}
9015
9016static bfd_boolean
cec5225b 9017elfNN_aarch64_finish_dynamic_sections (bfd *output_bfd,
a06ea964
NC		 9018 struct bfd_link_info *info)
9019{
cec5225b 9020 struct elf_aarch64_link_hash_table *htab;
a06ea964
NC		 9021 bfd *dynobj;
9022 asection *sdyn;
9023
cec5225b 9024 htab = elf_aarch64_hash_table (info);
a06ea964
NC		 9025 dynobj = htab->root.dynobj;
9026 sdyn = bfd_get_linker_section (dynobj, ".dynamic");
9027
9028 if (htab->root.dynamic_sections_created)
9029 {
cec5225b 9030 ElfNN_External_Dyn *dyncon, *dynconend;
a06ea964
NC		 9031
9032 if (sdyn == NULL || htab->root.sgot == NULL)
9033 abort ();
9034
cec5225b
YZ		 9035 dyncon = (ElfNN_External_Dyn *) sdyn->contents;
9036 dynconend = (ElfNN_External_Dyn *) (sdyn->contents + sdyn->size);
a06ea964
NC		 9037 for (; dyncon < dynconend; dyncon++)
9038 {
9039 Elf_Internal_Dyn dyn;
9040 asection *s;
9041
cec5225b 9042 bfd_elfNN_swap_dyn_in (dynobj, dyncon, &dyn);
a06ea964
NC		 9043
9044 switch (dyn.d_tag)
9045 {
9046 default:
9047 continue;
9048
9049 case DT_PLTGOT:
9050 s = htab->root.sgotplt;
9051 dyn.d_un.d_ptr = s->output_section->vma + s->output_offset;
9052 break;
9053
9054 case DT_JMPREL:
9055 dyn.d_un.d_ptr = htab->root.srelplt->output_section->vma;
9056 break;
9057
9058 case DT_PLTRELSZ:
c955de36 9059 s = htab->root.srelplt;
a06ea964
NC		 9060 dyn.d_un.d_val = s->size;
9061 break;
9062
9063 case DT_RELASZ:
9064 /* The procedure linkage table relocs (DT_JMPREL) should
9065 not be included in the overall relocs (DT_RELA).
9066 Therefore, we override the DT_RELASZ entry here to
9067 make it not include the JMPREL relocs. Since the
9068 linker script arranges for .rela.plt to follow all
9069 other relocation sections, we don't have to worry
9070 about changing the DT_RELA entry. */
9071 if (htab->root.srelplt != NULL)
9072 {
c955de36 9073 s = htab->root.srelplt;
a06ea964
NC		 9074 dyn.d_un.d_val -= s->size;
9075 }
9076 break;
9077
9078 case DT_TLSDESC_PLT:
9079 s = htab->root.splt;
9080 dyn.d_un.d_ptr = s->output_section->vma + s->output_offset
9081 + htab->tlsdesc_plt;
9082 break;
9083
9084 case DT_TLSDESC_GOT:
9085 s = htab->root.sgot;
9086 dyn.d_un.d_ptr = s->output_section->vma + s->output_offset
9087 + htab->dt_tlsdesc_got;
9088 break;
9089 }
9090
cec5225b 9091 bfd_elfNN_swap_dyn_out (output_bfd, &dyn, dyncon);
a06ea964
NC		 9092 }
9093
9094 }
9095
9096 /* Fill in the special first entry in the procedure linkage table. */
9097 if (htab->root.splt && htab->root.splt->size > 0)
9098 {
cec5225b 9099 elfNN_aarch64_init_small_plt0_entry (output_bfd, htab);
a06ea964
NC		 9100
9101 elf_section_data (htab->root.splt->output_section)->
9102 this_hdr.sh_entsize = htab->plt_entry_size;
9103
9104
9105 if (htab->tlsdesc_plt)
9106 {
cec5225b 9107 bfd_put_NN (output_bfd, (bfd_vma) 0,
a06ea964
NC		 9108 htab->root.sgot->contents + htab->dt_tlsdesc_got);
9109
9110 memcpy (htab->root.splt->contents + htab->tlsdesc_plt,
cec5225b
YZ		 9111 elfNN_aarch64_tlsdesc_small_plt_entry,
9112 sizeof (elfNN_aarch64_tlsdesc_small_plt_entry));
a06ea964
NC		 9113
9114 {
9115 bfd_vma adrp1_addr =
9116 htab->root.splt->output_section->vma
9117 + htab->root.splt->output_offset + htab->tlsdesc_plt + 4;
9118
caed7120 9119 bfd_vma adrp2_addr = adrp1_addr + 4;
a06ea964
NC		 9120
9121 bfd_vma got_addr =
9122 htab->root.sgot->output_section->vma
9123 + htab->root.sgot->output_offset;
9124
9125 bfd_vma pltgot_addr =
9126 htab->root.sgotplt->output_section->vma
9127 + htab->root.sgotplt->output_offset;
9128
9129 bfd_vma dt_tlsdesc_got = got_addr + htab->dt_tlsdesc_got;
caed7120
YZ		 9130
9131 bfd_byte *plt_entry =
9132 htab->root.splt->contents + htab->tlsdesc_plt;
a06ea964
NC		 9133
9134 /* adrp x2, DT_TLSDESC_GOT */
caed7120
YZ		 9135 elf_aarch64_update_plt_entry (output_bfd,
9136 BFD_RELOC_AARCH64_ADR_HI21_PCREL,
9137 plt_entry + 4,
9138 (PG (dt_tlsdesc_got)
9139 - PG (adrp1_addr)));
a06ea964
NC		 9140
9141 /* adrp x3, 0 */
caed7120
YZ		 9142 elf_aarch64_update_plt_entry (output_bfd,
9143 BFD_RELOC_AARCH64_ADR_HI21_PCREL,
9144 plt_entry + 8,
9145 (PG (pltgot_addr)
9146 - PG (adrp2_addr)));
a06ea964
NC		 9147
9148 /* ldr x2, [x2, #0] */
caed7120
YZ		 9149 elf_aarch64_update_plt_entry (output_bfd,
9150 BFD_RELOC_AARCH64_LDSTNN_LO12,
9151 plt_entry + 12,
9152 PG_OFFSET (dt_tlsdesc_got));
a06ea964
NC		 9153
9154 /* add x3, x3, 0 */
caed7120
YZ		 9155 elf_aarch64_update_plt_entry (output_bfd,
9156 BFD_RELOC_AARCH64_ADD_LO12,
9157 plt_entry + 16,
9158 PG_OFFSET (pltgot_addr));
a06ea964
NC		 9159 }
9160 }
9161 }
9162
9163 if (htab->root.sgotplt)
9164 {
9165 if (bfd_is_abs_section (htab->root.sgotplt->output_section))
9166 {
9167 (*_bfd_error_handler)
9168 (_("discarded output section: `%A'"), htab->root.sgotplt);
9169 return FALSE;
9170 }
9171
9172 /* Fill in the first three entries in the global offset table. */
9173 if (htab->root.sgotplt->size > 0)
9174 {
8db339a6
MS		 9175 bfd_put_NN (output_bfd, (bfd_vma) 0, htab->root.sgotplt->contents);
9176
a06ea964 9177 /* Write GOT[1] and GOT[2], needed for the dynamic linker. */
cec5225b 9178 bfd_put_NN (output_bfd,
a06ea964
NC		 9179 (bfd_vma) 0,
9180 htab->root.sgotplt->contents + GOT_ENTRY_SIZE);
cec5225b 9181 bfd_put_NN (output_bfd,
a06ea964
NC		 9182 (bfd_vma) 0,
9183 htab->root.sgotplt->contents + GOT_ENTRY_SIZE * 2);
9184 }
9185
8db339a6
MS		 9186 if (htab->root.sgot)
9187 {
9188 if (htab->root.sgot->size > 0)
9189 {
9190 bfd_vma addr =
9191 sdyn ? sdyn->output_section->vma + sdyn->output_offset : 0;
9192 bfd_put_NN (output_bfd, addr, htab->root.sgot->contents);
9193 }
9194 }
9195
a06ea964
NC		 9196 elf_section_data (htab->root.sgotplt->output_section)->
9197 this_hdr.sh_entsize = GOT_ENTRY_SIZE;
9198 }
9199
9200 if (htab->root.sgot && htab->root.sgot->size > 0)
9201 elf_section_data (htab->root.sgot->output_section)->this_hdr.sh_entsize
9202 = GOT_ENTRY_SIZE;
9203
1419bbe5
WN		 9204 /* Fill PLT and GOT entries for local STT_GNU_IFUNC symbols. */
9205 htab_traverse (htab->loc_hash_table,
9206 elfNN_aarch64_finish_local_dynamic_symbol,
9207 info);
9208
a06ea964
NC		 9209 return TRUE;
9210}
9211
9212/* Return address for Ith PLT stub in section PLT, for relocation REL
9213 or (bfd_vma) -1 if it should not be included. */
9214
9215static bfd_vma
cec5225b 9216elfNN_aarch64_plt_sym_val (bfd_vma i, const asection *plt,
a06ea964
NC		 9217 const arelent *rel ATTRIBUTE_UNUSED)
9218{
9219 return plt->vma + PLT_ENTRY_SIZE + i * PLT_SMALL_ENTRY_SIZE;
9220}
9221
9222
9223/* We use this so we can override certain functions
9224 (though currently we don't). */
9225
cec5225b 9226const struct elf_size_info elfNN_aarch64_size_info =
a06ea964 9227{
cec5225b
YZ		 9228 sizeof (ElfNN_External_Ehdr),
9229 sizeof (ElfNN_External_Phdr),
9230 sizeof (ElfNN_External_Shdr),
9231 sizeof (ElfNN_External_Rel),
9232 sizeof (ElfNN_External_Rela),
9233 sizeof (ElfNN_External_Sym),
9234 sizeof (ElfNN_External_Dyn),
a06ea964
NC		 9235 sizeof (Elf_External_Note),
9236 4, /* Hash table entry size. */
9237 1, /* Internal relocs per external relocs. */
cec5225b
YZ		 9238 ARCH_SIZE, /* Arch size. */
9239 LOG_FILE_ALIGN, /* Log_file_align. */
9240 ELFCLASSNN, EV_CURRENT,
9241 bfd_elfNN_write_out_phdrs,
9242 bfd_elfNN_write_shdrs_and_ehdr,
9243 bfd_elfNN_checksum_contents,
9244 bfd_elfNN_write_relocs,
9245 bfd_elfNN_swap_symbol_in,
9246 bfd_elfNN_swap_symbol_out,
9247 bfd_elfNN_slurp_reloc_table,
9248 bfd_elfNN_slurp_symbol_table,
9249 bfd_elfNN_swap_dyn_in,
9250 bfd_elfNN_swap_dyn_out,
9251 bfd_elfNN_swap_reloc_in,
9252 bfd_elfNN_swap_reloc_out,
9253 bfd_elfNN_swap_reloca_in,
9254 bfd_elfNN_swap_reloca_out
a06ea964
NC		 9255};
9256
9257#define ELF_ARCH bfd_arch_aarch64
9258#define ELF_MACHINE_CODE EM_AARCH64
9259#define ELF_MAXPAGESIZE 0x10000
9260#define ELF_MINPAGESIZE 0x1000
9261#define ELF_COMMONPAGESIZE 0x1000
9262
cec5225b
YZ		 9263#define bfd_elfNN_close_and_cleanup \
9264 elfNN_aarch64_close_and_cleanup
a06ea964 9265
cec5225b
YZ		 9266#define bfd_elfNN_bfd_free_cached_info \
9267 elfNN_aarch64_bfd_free_cached_info
a06ea964 9268
cec5225b
YZ		 9269#define bfd_elfNN_bfd_is_target_special_symbol \
9270 elfNN_aarch64_is_target_special_symbol
a06ea964 9271
cec5225b
YZ		 9272#define bfd_elfNN_bfd_link_hash_table_create \
9273 elfNN_aarch64_link_hash_table_create
a06ea964 9274
cec5225b
YZ		 9275#define bfd_elfNN_bfd_merge_private_bfd_data \
9276 elfNN_aarch64_merge_private_bfd_data
a06ea964 9277
cec5225b
YZ		 9278#define bfd_elfNN_bfd_print_private_bfd_data \
9279 elfNN_aarch64_print_private_bfd_data
a06ea964 9280
cec5225b
YZ		 9281#define bfd_elfNN_bfd_reloc_type_lookup \
9282 elfNN_aarch64_reloc_type_lookup
a06ea964 9283
cec5225b
YZ		 9284#define bfd_elfNN_bfd_reloc_name_lookup \
9285 elfNN_aarch64_reloc_name_lookup
a06ea964 9286
cec5225b
YZ		 9287#define bfd_elfNN_bfd_set_private_flags \
9288 elfNN_aarch64_set_private_flags
a06ea964 9289
cec5225b
YZ		 9290#define bfd_elfNN_find_inliner_info \
9291 elfNN_aarch64_find_inliner_info
a06ea964 9292
cec5225b
YZ		 9293#define bfd_elfNN_find_nearest_line \
9294 elfNN_aarch64_find_nearest_line
a06ea964 9295
cec5225b
YZ		 9296#define bfd_elfNN_mkobject \
9297 elfNN_aarch64_mkobject
a06ea964 9298
cec5225b
YZ		 9299#define bfd_elfNN_new_section_hook \
9300 elfNN_aarch64_new_section_hook
a06ea964
NC		 9301
9302#define elf_backend_adjust_dynamic_symbol \
cec5225b 9303 elfNN_aarch64_adjust_dynamic_symbol
a06ea964
NC		 9304
9305#define elf_backend_always_size_sections \
cec5225b 9306 elfNN_aarch64_always_size_sections
a06ea964
NC		 9307
9308#define elf_backend_check_relocs \
cec5225b 9309 elfNN_aarch64_check_relocs
a06ea964
NC		 9310
9311#define elf_backend_copy_indirect_symbol \
cec5225b 9312 elfNN_aarch64_copy_indirect_symbol
a06ea964
NC		 9313
9314/* Create .dynbss, and .rela.bss sections in DYNOBJ, and set up shortcuts
9315 to them in our hash. */
9316#define elf_backend_create_dynamic_sections \
cec5225b 9317 elfNN_aarch64_create_dynamic_sections
a06ea964
NC		 9318
9319#define elf_backend_init_index_section \
9320 _bfd_elf_init_2_index_sections
9321
a06ea964 9322#define elf_backend_finish_dynamic_sections \
cec5225b 9323 elfNN_aarch64_finish_dynamic_sections
a06ea964
NC		 9324
9325#define elf_backend_finish_dynamic_symbol \
cec5225b 9326 elfNN_aarch64_finish_dynamic_symbol
a06ea964
NC		 9327
9328#define elf_backend_gc_sweep_hook \
cec5225b 9329 elfNN_aarch64_gc_sweep_hook
a06ea964
NC		 9330
9331#define elf_backend_object_p \
cec5225b 9332 elfNN_aarch64_object_p
a06ea964
NC		 9333
9334#define elf_backend_output_arch_local_syms \
cec5225b 9335 elfNN_aarch64_output_arch_local_syms
a06ea964
NC		 9336
9337#define elf_backend_plt_sym_val \
cec5225b 9338 elfNN_aarch64_plt_sym_val
a06ea964
NC		 9339
9340#define elf_backend_post_process_headers \
cec5225b 9341 elfNN_aarch64_post_process_headers
a06ea964
NC		 9342
9343#define elf_backend_relocate_section \
cec5225b 9344 elfNN_aarch64_relocate_section
a06ea964
NC		 9345
9346#define elf_backend_reloc_type_class \
cec5225b 9347 elfNN_aarch64_reloc_type_class
a06ea964 9348
a06ea964 9349#define elf_backend_section_from_shdr \
cec5225b 9350 elfNN_aarch64_section_from_shdr
a06ea964
NC		 9351
9352#define elf_backend_size_dynamic_sections \
cec5225b 9353 elfNN_aarch64_size_dynamic_sections
a06ea964
NC		 9354
9355#define elf_backend_size_info \
cec5225b 9356 elfNN_aarch64_size_info
a06ea964 9357
68fcca92
JW		 9358#define elf_backend_write_section \
9359 elfNN_aarch64_write_section
9360
a06ea964 9361#define elf_backend_can_refcount 1
59c108f7 9362#define elf_backend_can_gc_sections 1
a06ea964
NC		 9363#define elf_backend_plt_readonly 1
9364#define elf_backend_want_got_plt 1
9365#define elf_backend_want_plt_sym 0
9366#define elf_backend_may_use_rel_p 0
9367#define elf_backend_may_use_rela_p 1
9368#define elf_backend_default_use_rela_p 1
2e0488d3 9369#define elf_backend_rela_normal 1
a06ea964 9370#define elf_backend_got_header_size (GOT_ENTRY_SIZE * 3)
c495064d 9371#define elf_backend_default_execstack 0
32f573bc 9372#define elf_backend_extern_protected_data 1
a06ea964
NC		 9373
9374#undef elf_backend_obj_attrs_section
9375#define elf_backend_obj_attrs_section ".ARM.attributes"
9376
cec5225b 9377#include "elfNN-target.h"
a75cf613
ES		 9378
9379/* CloudABI support. */
9380
9381#undef TARGET_LITTLE_SYM
9382#define TARGET_LITTLE_SYM aarch64_elfNN_le_cloudabi_vec
9383#undef TARGET_LITTLE_NAME
9384#define TARGET_LITTLE_NAME "elfNN-littleaarch64-cloudabi"
9385#undef TARGET_BIG_SYM
9386#define TARGET_BIG_SYM aarch64_elfNN_be_cloudabi_vec
9387#undef TARGET_BIG_NAME
9388#define TARGET_BIG_NAME "elfNN-bigaarch64-cloudabi"
9389
9390#undef ELF_OSABI
9391#define ELF_OSABI ELFOSABI_CLOUDABI
9392
9393#undef elfNN_bed
9394#define elfNN_bed elfNN_aarch64_cloudabi_bed
9395
9396#include "elfNN-target.h"
GDB Binutils - Deliverables
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