projects / deliverable / binutils-gdb.git / blame
? search:
summary | shortlog | log | commit | commitdiff | tree
blob | blame (incremental) | history | HEAD
Automatic date update in version.in
[deliverable/binutils-gdb.git] / bfd / elfnn-aarch64.c
CommitLineData
cec5225b 1/* AArch64-specific support for NN-bit ELF.
b3adc24a 2 Copyright (C) 2009-2020 Free Software Foundation, Inc.
a06ea964
NC		 3 Contributed by ARM Ltd.
4
5 This file is part of BFD, the Binary File Descriptor library.
6
7 This program is free software; you can redistribute it and/or modify
8 it under the terms of the GNU General Public License as published by
9 the Free Software Foundation; either version 3 of the License, or
10 (at your option) any later version.
11
12 This program is distributed in the hope that it will be useful,
13 but WITHOUT ANY WARRANTY; without even the implied warranty of
14 MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
15 GNU General Public License for more details.
16
17 You should have received a copy of the GNU General Public License
18 along with this program; see the file COPYING3. If not,
19 see <http://www.gnu.org/licenses/>. */
20
21/* Notes on implementation:
22
23 Thread Local Store (TLS)
24
25 Overview:
26
27 The implementation currently supports both traditional TLS and TLS
28 descriptors, but only general dynamic (GD).
29
30 For traditional TLS the assembler will present us with code
31 fragments of the form:
32
33 adrp x0, :tlsgd:foo
07d6d2b8 34 R_AARCH64_TLSGD_ADR_PAGE21(foo)
a06ea964 35 add x0, :tlsgd_lo12:foo
07d6d2b8 36 R_AARCH64_TLSGD_ADD_LO12_NC(foo)
a06ea964
NC		 37 bl __tls_get_addr
38 nop
39
40 For TLS descriptors the assembler will present us with code
41 fragments of the form:
42
07d6d2b8
AM		 43 adrp x0, :tlsdesc:foo R_AARCH64_TLSDESC_ADR_PAGE21(foo)
44 ldr x1, [x0, #:tlsdesc_lo12:foo] R_AARCH64_TLSDESC_LD64_LO12(foo)
45 add x0, x0, #:tlsdesc_lo12:foo R_AARCH64_TLSDESC_ADD_LO12(foo)
a06ea964 46 .tlsdesccall foo
07d6d2b8 47 blr x1 R_AARCH64_TLSDESC_CALL(foo)
a06ea964
NC		 48
49 The relocations R_AARCH64_TLSGD_{ADR_PREL21,ADD_LO12_NC} against foo
50 indicate that foo is thread local and should be accessed via the
51 traditional TLS mechanims.
52
a6bb11b2 53 The relocations R_AARCH64_TLSDESC_{ADR_PAGE21,LD64_LO12_NC,ADD_LO12_NC}
a06ea964
NC		 54 against foo indicate that 'foo' is thread local and should be accessed
55 via a TLS descriptor mechanism.
56
57 The precise instruction sequence is only relevant from the
58 perspective of linker relaxation which is currently not implemented.
59
60 The static linker must detect that 'foo' is a TLS object and
61 allocate a double GOT entry. The GOT entry must be created for both
62 global and local TLS symbols. Note that this is different to none
63 TLS local objects which do not need a GOT entry.
64
65 In the traditional TLS mechanism, the double GOT entry is used to
66 provide the tls_index structure, containing module and offset
a6bb11b2 67 entries. The static linker places the relocation R_AARCH64_TLS_DTPMOD
a06ea964
NC		 68 on the module entry. The loader will subsequently fixup this
69 relocation with the module identity.
70
71 For global traditional TLS symbols the static linker places an
a6bb11b2 72 R_AARCH64_TLS_DTPREL relocation on the offset entry. The loader
a06ea964
NC		 73 will subsequently fixup the offset. For local TLS symbols the static
74 linker fixes up offset.
75
76 In the TLS descriptor mechanism the double GOT entry is used to
77 provide the descriptor. The static linker places the relocation
78 R_AARCH64_TLSDESC on the first GOT slot. The loader will
79 subsequently fix this up.
80
81 Implementation:
82
83 The handling of TLS symbols is implemented across a number of
84 different backend functions. The following is a top level view of
85 what processing is performed where.
86
87 The TLS implementation maintains state information for each TLS
88 symbol. The state information for local and global symbols is kept
89 in different places. Global symbols use generic BFD structures while
90 local symbols use backend specific structures that are allocated and
91 maintained entirely by the backend.
92
93 The flow:
94
cec5225b 95 elfNN_aarch64_check_relocs()
a06ea964
NC		 96
97 This function is invoked for each relocation.
98
99 The TLS relocations R_AARCH64_TLSGD_{ADR_PREL21,ADD_LO12_NC} and
a6bb11b2 100 R_AARCH64_TLSDESC_{ADR_PAGE21,LD64_LO12_NC,ADD_LO12_NC} are
a06ea964
NC		 101 spotted. One time creation of local symbol data structures are
102 created when the first local symbol is seen.
103
104 The reference count for a symbol is incremented. The GOT type for
105 each symbol is marked as general dynamic.
106
cec5225b 107 elfNN_aarch64_allocate_dynrelocs ()
a06ea964
NC		 108
109 For each global with positive reference count we allocate a double
110 GOT slot. For a traditional TLS symbol we allocate space for two
111 relocation entries on the GOT, for a TLS descriptor symbol we
112 allocate space for one relocation on the slot. Record the GOT offset
113 for this symbol.
114
cec5225b 115 elfNN_aarch64_size_dynamic_sections ()
a06ea964
NC		 116
117 Iterate all input BFDS, look for in the local symbol data structure
118 constructed earlier for local TLS symbols and allocate them double
119 GOT slots along with space for a single GOT relocation. Update the
120 local symbol structure to record the GOT offset allocated.
121
cec5225b 122 elfNN_aarch64_relocate_section ()
a06ea964 123
cec5225b 124 Calls elfNN_aarch64_final_link_relocate ()
a06ea964
NC		 125
126 Emit the relevant TLS relocations against the GOT for each TLS
127 symbol. For local TLS symbols emit the GOT offset directly. The GOT
128 relocations are emitted once the first time a TLS symbol is
129 encountered. The implementation uses the LSB of the GOT offset to
130 flag that the relevant GOT relocations for a symbol have been
131 emitted. All of the TLS code that uses the GOT offset needs to take
132 care to mask out this flag bit before using the offset.
133
cec5225b 134 elfNN_aarch64_final_link_relocate ()
a06ea964
NC		 135
136 Fixup the R_AARCH64_TLSGD_{ADR_PREL21, ADD_LO12_NC} relocations. */
137
138#include "sysdep.h"
139#include "bfd.h"
140#include "libiberty.h"
141#include "libbfd.h"
a06ea964
NC		 142#include "elf-bfd.h"
143#include "bfdlink.h"
1419bbe5 144#include "objalloc.h"
a06ea964 145#include "elf/aarch64.h"
caed7120 146#include "elfxx-aarch64.h"
a8bfaadb 147#include "cpu-aarch64.h"
a06ea964 148
cec5225b
YZ		 149#define ARCH_SIZE NN
150
151#if ARCH_SIZE == 64
152#define AARCH64_R(NAME) R_AARCH64_ ## NAME
153#define AARCH64_R_STR(NAME) "R_AARCH64_" #NAME
a6bb11b2
YZ		 154#define HOWTO64(...) HOWTO (__VA_ARGS__)
155#define HOWTO32(...) EMPTY_HOWTO (0)
cec5225b 156#define LOG_FILE_ALIGN 3
f955cccf 157#define BFD_RELOC_AARCH64_TLSDESC_LD64_LO12_NC BFD_RELOC_AARCH64_TLSDESC_LD64_LO12
cec5225b
YZ		 158#endif
159
160#if ARCH_SIZE == 32
161#define AARCH64_R(NAME) R_AARCH64_P32_ ## NAME
162#define AARCH64_R_STR(NAME) "R_AARCH64_P32_" #NAME
a6bb11b2
YZ		 163#define HOWTO64(...) EMPTY_HOWTO (0)
164#define HOWTO32(...) HOWTO (__VA_ARGS__)
cec5225b 165#define LOG_FILE_ALIGN 2
07d6d2b8
AM		 166#define BFD_RELOC_AARCH64_TLSDESC_LD32_LO12 BFD_RELOC_AARCH64_TLSDESC_LD32_LO12_NC
167#define R_AARCH64_P32_TLSDESC_ADD_LO12 R_AARCH64_P32_TLSDESC_ADD_LO12_NC
cec5225b
YZ		 168#endif
169
a6bb11b2 170#define IS_AARCH64_TLS_RELOC(R_TYPE) \
4c0a9a6f
JW		 171 ((R_TYPE) == BFD_RELOC_AARCH64_TLSGD_ADD_LO12_NC \
172 || (R_TYPE) == BFD_RELOC_AARCH64_TLSGD_ADR_PAGE21 \
3c12b054 173 || (R_TYPE) == BFD_RELOC_AARCH64_TLSGD_ADR_PREL21 \
3e8286c0 174 || (R_TYPE) == BFD_RELOC_AARCH64_TLSGD_MOVW_G0_NC \
1aa66fb1 175 || (R_TYPE) == BFD_RELOC_AARCH64_TLSGD_MOVW_G1 \
a6bb11b2 176 || (R_TYPE) == BFD_RELOC_AARCH64_TLSIE_ADR_GOTTPREL_PAGE21 \
a6bb11b2 177 || (R_TYPE) == BFD_RELOC_AARCH64_TLSIE_LD32_GOTTPREL_LO12_NC \
4c0a9a6f 178 || (R_TYPE) == BFD_RELOC_AARCH64_TLSIE_LD64_GOTTPREL_LO12_NC \
a6bb11b2 179 || (R_TYPE) == BFD_RELOC_AARCH64_TLSIE_LD_GOTTPREL_PREL19 \
4c0a9a6f
JW		 180 || (R_TYPE) == BFD_RELOC_AARCH64_TLSIE_MOVW_GOTTPREL_G0_NC \
181 || (R_TYPE) == BFD_RELOC_AARCH64_TLSIE_MOVW_GOTTPREL_G1 \
6ffe9a1b 182 || (R_TYPE) == BFD_RELOC_AARCH64_TLSLD_ADD_DTPREL_HI12 \
40fbed84 183 || (R_TYPE) == BFD_RELOC_AARCH64_TLSLD_ADD_DTPREL_LO12 \
753999c1 184 || (R_TYPE) == BFD_RELOC_AARCH64_TLSLD_ADD_DTPREL_LO12_NC \
73f925cc 185 || (R_TYPE) == BFD_RELOC_AARCH64_TLSLD_ADD_LO12_NC \
f69e4920 186 || (R_TYPE) == BFD_RELOC_AARCH64_TLSLD_ADR_PAGE21 \
77a69ff8 187 || (R_TYPE) == BFD_RELOC_AARCH64_TLSLD_ADR_PREL21 \
07c9aa07
JW		 188 || (R_TYPE) == BFD_RELOC_AARCH64_TLSLD_LDST16_DTPREL_LO12 \
189 || (R_TYPE) == BFD_RELOC_AARCH64_TLSLD_LDST16_DTPREL_LO12_NC \
190 || (R_TYPE) == BFD_RELOC_AARCH64_TLSLD_LDST32_DTPREL_LO12 \
191 || (R_TYPE) == BFD_RELOC_AARCH64_TLSLD_LDST32_DTPREL_LO12_NC \
192 || (R_TYPE) == BFD_RELOC_AARCH64_TLSLD_LDST64_DTPREL_LO12 \
193 || (R_TYPE) == BFD_RELOC_AARCH64_TLSLD_LDST64_DTPREL_LO12_NC \
194 || (R_TYPE) == BFD_RELOC_AARCH64_TLSLD_LDST8_DTPREL_LO12 \
195 || (R_TYPE) == BFD_RELOC_AARCH64_TLSLD_LDST8_DTPREL_LO12_NC \
6ffe9a1b
JW		 196 || (R_TYPE) == BFD_RELOC_AARCH64_TLSLD_MOVW_DTPREL_G0 \
197 || (R_TYPE) == BFD_RELOC_AARCH64_TLSLD_MOVW_DTPREL_G0_NC \
198 || (R_TYPE) == BFD_RELOC_AARCH64_TLSLD_MOVW_DTPREL_G1 \
199 || (R_TYPE) == BFD_RELOC_AARCH64_TLSLD_MOVW_DTPREL_G1_NC \
200 || (R_TYPE) == BFD_RELOC_AARCH64_TLSLD_MOVW_DTPREL_G2 \
a6bb11b2 201 || (R_TYPE) == BFD_RELOC_AARCH64_TLSLE_ADD_TPREL_HI12 \
4c0a9a6f 202 || (R_TYPE) == BFD_RELOC_AARCH64_TLSLE_ADD_TPREL_LO12 \
a6bb11b2 203 || (R_TYPE) == BFD_RELOC_AARCH64_TLSLE_ADD_TPREL_LO12_NC \
e04ef022
RL		 204 || (R_TYPE) == BFD_RELOC_AARCH64_TLSLE_LDST16_TPREL_LO12 \
205 || (R_TYPE) == BFD_RELOC_AARCH64_TLSLE_LDST16_TPREL_LO12_NC \
206 || (R_TYPE) == BFD_RELOC_AARCH64_TLSLE_LDST32_TPREL_LO12 \
207 || (R_TYPE) == BFD_RELOC_AARCH64_TLSLE_LDST32_TPREL_LO12_NC \
208 || (R_TYPE) == BFD_RELOC_AARCH64_TLSLE_LDST64_TPREL_LO12 \
209 || (R_TYPE) == BFD_RELOC_AARCH64_TLSLE_LDST64_TPREL_LO12_NC \
210 || (R_TYPE) == BFD_RELOC_AARCH64_TLSLE_LDST8_TPREL_LO12 \
211 || (R_TYPE) == BFD_RELOC_AARCH64_TLSLE_LDST8_TPREL_LO12_NC \
a6bb11b2
YZ		 212 || (R_TYPE) == BFD_RELOC_AARCH64_TLSLE_MOVW_TPREL_G0 \
213 || (R_TYPE) == BFD_RELOC_AARCH64_TLSLE_MOVW_TPREL_G0_NC \
4c0a9a6f
JW		 214 || (R_TYPE) == BFD_RELOC_AARCH64_TLSLE_MOVW_TPREL_G1 \
215 || (R_TYPE) == BFD_RELOC_AARCH64_TLSLE_MOVW_TPREL_G1_NC \
216 || (R_TYPE) == BFD_RELOC_AARCH64_TLSLE_MOVW_TPREL_G2 \
a6bb11b2
YZ		 217 || (R_TYPE) == BFD_RELOC_AARCH64_TLS_DTPMOD \
218 || (R_TYPE) == BFD_RELOC_AARCH64_TLS_DTPREL \
219 || (R_TYPE) == BFD_RELOC_AARCH64_TLS_TPREL \
a06ea964
NC		 220 || IS_AARCH64_TLSDESC_RELOC ((R_TYPE)))
221
9331eea1 222#define IS_AARCH64_TLS_RELAX_RELOC(R_TYPE) \
f955cccf
NC		 223 ((R_TYPE) == BFD_RELOC_AARCH64_TLSDESC_ADD \
224 || (R_TYPE) == BFD_RELOC_AARCH64_TLSDESC_ADD_LO12 \
4af68b9c
JW		 225 || (R_TYPE) == BFD_RELOC_AARCH64_TLSDESC_ADR_PAGE21 \
226 || (R_TYPE) == BFD_RELOC_AARCH64_TLSDESC_ADR_PREL21 \
227 || (R_TYPE) == BFD_RELOC_AARCH64_TLSDESC_CALL \
228 || (R_TYPE) == BFD_RELOC_AARCH64_TLSDESC_LD_PREL19 \
229 || (R_TYPE) == BFD_RELOC_AARCH64_TLSDESC_LDNN_LO12_NC \
0484b454
RL		 230 || (R_TYPE) == BFD_RELOC_AARCH64_TLSDESC_LDR \
231 || (R_TYPE) == BFD_RELOC_AARCH64_TLSDESC_OFF_G0_NC \
232 || (R_TYPE) == BFD_RELOC_AARCH64_TLSDESC_OFF_G1 \
233 || (R_TYPE) == BFD_RELOC_AARCH64_TLSDESC_LDR \
4af68b9c 234 || (R_TYPE) == BFD_RELOC_AARCH64_TLSGD_ADR_PAGE21 \
9331eea1
JW		 235 || (R_TYPE) == BFD_RELOC_AARCH64_TLSGD_ADR_PREL21 \
236 || (R_TYPE) == BFD_RELOC_AARCH64_TLSGD_ADD_LO12_NC \
ac734732
RL		 237 || (R_TYPE) == BFD_RELOC_AARCH64_TLSGD_MOVW_G0_NC \
238 || (R_TYPE) == BFD_RELOC_AARCH64_TLSGD_MOVW_G1 \
9331eea1
JW		 239 || (R_TYPE) == BFD_RELOC_AARCH64_TLSIE_ADR_GOTTPREL_PAGE21 \
240 || (R_TYPE) == BFD_RELOC_AARCH64_TLSIE_LD_GOTTPREL_PREL19 \
241 || (R_TYPE) == BFD_RELOC_AARCH64_TLSIE_LDNN_GOTTPREL_LO12_NC \
259364ad
JW		 242 || (R_TYPE) == BFD_RELOC_AARCH64_TLSLD_ADD_LO12_NC \
243 || (R_TYPE) == BFD_RELOC_AARCH64_TLSLD_ADR_PAGE21 \
4af68b9c 244 || (R_TYPE) == BFD_RELOC_AARCH64_TLSLD_ADR_PREL21)
9331eea1 245
a6bb11b2 246#define IS_AARCH64_TLSDESC_RELOC(R_TYPE) \
4c0a9a6f
JW		 247 ((R_TYPE) == BFD_RELOC_AARCH64_TLSDESC \
248 || (R_TYPE) == BFD_RELOC_AARCH64_TLSDESC_ADD \
f955cccf 249 || (R_TYPE) == BFD_RELOC_AARCH64_TLSDESC_ADD_LO12 \
a6bb11b2 250 || (R_TYPE) == BFD_RELOC_AARCH64_TLSDESC_ADR_PAGE21 \
389b8029 251 || (R_TYPE) == BFD_RELOC_AARCH64_TLSDESC_ADR_PREL21 \
4c0a9a6f 252 || (R_TYPE) == BFD_RELOC_AARCH64_TLSDESC_CALL \
a6bb11b2 253 || (R_TYPE) == BFD_RELOC_AARCH64_TLSDESC_LD32_LO12_NC \
f955cccf 254 || (R_TYPE) == BFD_RELOC_AARCH64_TLSDESC_LD64_LO12 \
a6bb11b2 255 || (R_TYPE) == BFD_RELOC_AARCH64_TLSDESC_LDR \
4c0a9a6f
JW		 256 || (R_TYPE) == BFD_RELOC_AARCH64_TLSDESC_LD_PREL19 \
257 || (R_TYPE) == BFD_RELOC_AARCH64_TLSDESC_OFF_G0_NC \
258 || (R_TYPE) == BFD_RELOC_AARCH64_TLSDESC_OFF_G1)
a06ea964 259
6353d82b 260#define ELIMINATE_COPY_RELOCS 1
a06ea964 261
a06ea964 262/* Return size of a relocation entry. HTAB is the bfd's
cec5225b
YZ		 263 elf_aarch64_link_hash_entry. */
264#define RELOC_SIZE(HTAB) (sizeof (ElfNN_External_Rela))
a06ea964 265
cec5225b 266/* GOT Entry size - 8 bytes in ELF64 and 4 bytes in ELF32. */
07d6d2b8
AM		 267#define GOT_ENTRY_SIZE (ARCH_SIZE / 8)
268#define PLT_ENTRY_SIZE (32)
269#define PLT_SMALL_ENTRY_SIZE (16)
270#define PLT_TLSDESC_ENTRY_SIZE (32)
37c18eed 271/* PLT sizes with BTI insn. */
68bb0359 272#define PLT_BTI_SMALL_ENTRY_SIZE (24)
1dbade74 273/* PLT sizes with PAC insn. */
68bb0359 274#define PLT_PAC_SMALL_ENTRY_SIZE (24)
1dbade74 275/* PLT sizes with BTI and PAC insn. */
1dbade74 276#define PLT_BTI_PAC_SMALL_ENTRY_SIZE (24)
a06ea964 277
2d0ca824 278/* Encoding of the nop instruction. */
a06ea964
NC		 279#define INSN_NOP 0xd503201f
280
281#define aarch64_compute_jump_table_size(htab) \
282 (((htab)->root.srelplt == NULL) ? 0 \
283 : (htab)->root.srelplt->reloc_count * GOT_ENTRY_SIZE)
284
285/* The first entry in a procedure linkage table looks like this
286 if the distance between the PLTGOT and the PLT is < 4GB use
287 these PLT entries. Note that the dynamic linker gets &PLTGOT[2]
288 in x16 and needs to work out PLTGOT[1] by using an address of
cec5225b
YZ		 289 [x16,#-GOT_ENTRY_SIZE]. */
290static const bfd_byte elfNN_aarch64_small_plt0_entry[PLT_ENTRY_SIZE] =
a06ea964
NC		 291{
292 0xf0, 0x7b, 0xbf, 0xa9, /* stp x16, x30, [sp, #-16]! */
293 0x10, 0x00, 0x00, 0x90, /* adrp x16, (GOT+16) */
caed7120 294#if ARCH_SIZE == 64
a06ea964
NC		 295 0x11, 0x0A, 0x40, 0xf9, /* ldr x17, [x16, #PLT_GOT+0x10] */
296 0x10, 0x42, 0x00, 0x91, /* add x16, x16,#PLT_GOT+0x10 */
caed7120
YZ		 297#else
298 0x11, 0x0A, 0x40, 0xb9, /* ldr w17, [x16, #PLT_GOT+0x8] */
299 0x10, 0x22, 0x00, 0x11, /* add w16, w16,#PLT_GOT+0x8 */
300#endif
a06ea964
NC		 301 0x20, 0x02, 0x1f, 0xd6, /* br x17 */
302 0x1f, 0x20, 0x03, 0xd5, /* nop */
303 0x1f, 0x20, 0x03, 0xd5, /* nop */
304 0x1f, 0x20, 0x03, 0xd5, /* nop */
305};
306
68bb0359 307static const bfd_byte elfNN_aarch64_small_plt0_bti_entry[PLT_ENTRY_SIZE] =
37c18eed
SD		 308{
309 0x5f, 0x24, 0x03, 0xd5, /* bti c. */
310 0xf0, 0x7b, 0xbf, 0xa9, /* stp x16, x30, [sp, #-16]! */
311 0x10, 0x00, 0x00, 0x90, /* adrp x16, (GOT+16) */
312#if ARCH_SIZE == 64
313 0x11, 0x0A, 0x40, 0xf9, /* ldr x17, [x16, #PLT_GOT+0x10] */
314 0x10, 0x42, 0x00, 0x91, /* add x16, x16,#PLT_GOT+0x10 */
315#else
316 0x11, 0x0A, 0x40, 0xb9, /* ldr w17, [x16, #PLT_GOT+0x8] */
317 0x10, 0x22, 0x00, 0x11, /* add w16, w16,#PLT_GOT+0x8 */
318#endif
319 0x20, 0x02, 0x1f, 0xd6, /* br x17 */
320 0x1f, 0x20, 0x03, 0xd5, /* nop */
321 0x1f, 0x20, 0x03, 0xd5, /* nop */
1dbade74
SD		 322};
323
a06ea964
NC		 324/* Per function entry in a procedure linkage table looks like this
325 if the distance between the PLTGOT and the PLT is < 4GB use
37c18eed 326 these PLT entries. Use BTI versions of the PLTs when enabled. */
cec5225b 327static const bfd_byte elfNN_aarch64_small_plt_entry[PLT_SMALL_ENTRY_SIZE] =
a06ea964
NC		 328{
329 0x10, 0x00, 0x00, 0x90, /* adrp x16, PLTGOT + n * 8 */
caed7120 330#if ARCH_SIZE == 64
a06ea964
NC		 331 0x11, 0x02, 0x40, 0xf9, /* ldr x17, [x16, PLTGOT + n * 8] */
332 0x10, 0x02, 0x00, 0x91, /* add x16, x16, :lo12:PLTGOT + n * 8 */
caed7120
YZ		 333#else
334 0x11, 0x02, 0x40, 0xb9, /* ldr w17, [x16, PLTGOT + n * 4] */
335 0x10, 0x02, 0x00, 0x11, /* add w16, w16, :lo12:PLTGOT + n * 4 */
336#endif
a06ea964
NC		 337 0x20, 0x02, 0x1f, 0xd6, /* br x17. */
338};
339
37c18eed
SD		 340static const bfd_byte
341elfNN_aarch64_small_plt_bti_entry[PLT_BTI_SMALL_ENTRY_SIZE] =
342{
343 0x5f, 0x24, 0x03, 0xd5, /* bti c. */
344 0x10, 0x00, 0x00, 0x90, /* adrp x16, PLTGOT + n * 8 */
345#if ARCH_SIZE == 64
346 0x11, 0x02, 0x40, 0xf9, /* ldr x17, [x16, PLTGOT + n * 8] */
347 0x10, 0x02, 0x00, 0x91, /* add x16, x16, :lo12:PLTGOT + n * 8 */
348#else
349 0x11, 0x02, 0x40, 0xb9, /* ldr w17, [x16, PLTGOT + n * 4] */
350 0x10, 0x02, 0x00, 0x11, /* add w16, w16, :lo12:PLTGOT + n * 4 */
351#endif
352 0x20, 0x02, 0x1f, 0xd6, /* br x17. */
68bb0359 353 0x1f, 0x20, 0x03, 0xd5, /* nop */
37c18eed
SD		 354};
355
1dbade74
SD		 356static const bfd_byte
357elfNN_aarch64_small_plt_pac_entry[PLT_PAC_SMALL_ENTRY_SIZE] =
358{
359 0x10, 0x00, 0x00, 0x90, /* adrp x16, PLTGOT + n * 8 */
360#if ARCH_SIZE == 64
361 0x11, 0x02, 0x40, 0xf9, /* ldr x17, [x16, PLTGOT + n * 8] */
362 0x10, 0x02, 0x00, 0x91, /* add x16, x16, :lo12:PLTGOT + n * 8 */
363#else
364 0x11, 0x02, 0x40, 0xb9, /* ldr w17, [x16, PLTGOT + n * 4] */
365 0x10, 0x02, 0x00, 0x11, /* add w16, w16, :lo12:PLTGOT + n * 4 */
366#endif
367 0x9f, 0x21, 0x03, 0xd5, /* autia1716 */
368 0x20, 0x02, 0x1f, 0xd6, /* br x17. */
68bb0359 369 0x1f, 0x20, 0x03, 0xd5, /* nop */
1dbade74
SD		 370};
371
372static const bfd_byte
373elfNN_aarch64_small_plt_bti_pac_entry[PLT_BTI_PAC_SMALL_ENTRY_SIZE] =
374{
375 0x5f, 0x24, 0x03, 0xd5, /* bti c. */
376 0x10, 0x00, 0x00, 0x90, /* adrp x16, PLTGOT + n * 8 */
377#if ARCH_SIZE == 64
378 0x11, 0x02, 0x40, 0xf9, /* ldr x17, [x16, PLTGOT + n * 8] */
379 0x10, 0x02, 0x00, 0x91, /* add x16, x16, :lo12:PLTGOT + n * 8 */
380#else
381 0x11, 0x02, 0x40, 0xb9, /* ldr w17, [x16, PLTGOT + n * 4] */
382 0x10, 0x02, 0x00, 0x11, /* add w16, w16, :lo12:PLTGOT + n * 4 */
383#endif
384 0x9f, 0x21, 0x03, 0xd5, /* autia1716 */
385 0x20, 0x02, 0x1f, 0xd6, /* br x17. */
386};
387
a06ea964 388static const bfd_byte
cec5225b 389elfNN_aarch64_tlsdesc_small_plt_entry[PLT_TLSDESC_ENTRY_SIZE] =
a06ea964
NC		 390{
391 0xe2, 0x0f, 0xbf, 0xa9, /* stp x2, x3, [sp, #-16]! */
392 0x02, 0x00, 0x00, 0x90, /* adrp x2, 0 */
393 0x03, 0x00, 0x00, 0x90, /* adrp x3, 0 */
caed7120
YZ		 394#if ARCH_SIZE == 64
395 0x42, 0x00, 0x40, 0xf9, /* ldr x2, [x2, #0] */
a06ea964 396 0x63, 0x00, 0x00, 0x91, /* add x3, x3, 0 */
caed7120
YZ		 397#else
398 0x42, 0x00, 0x40, 0xb9, /* ldr w2, [x2, #0] */
399 0x63, 0x00, 0x00, 0x11, /* add w3, w3, 0 */
400#endif
401 0x40, 0x00, 0x1f, 0xd6, /* br x2 */
a06ea964
NC		 402 0x1f, 0x20, 0x03, 0xd5, /* nop */
403 0x1f, 0x20, 0x03, 0xd5, /* nop */
404};
405
37c18eed 406static const bfd_byte
68bb0359 407elfNN_aarch64_tlsdesc_small_plt_bti_entry[PLT_TLSDESC_ENTRY_SIZE] =
37c18eed
SD		 408{
409 0x5f, 0x24, 0x03, 0xd5, /* bti c. */
410 0xe2, 0x0f, 0xbf, 0xa9, /* stp x2, x3, [sp, #-16]! */
411 0x02, 0x00, 0x00, 0x90, /* adrp x2, 0 */
412 0x03, 0x00, 0x00, 0x90, /* adrp x3, 0 */
413#if ARCH_SIZE == 64
414 0x42, 0x00, 0x40, 0xf9, /* ldr x2, [x2, #0] */
415 0x63, 0x00, 0x00, 0x91, /* add x3, x3, 0 */
416#else
417 0x42, 0x00, 0x40, 0xb9, /* ldr w2, [x2, #0] */
418 0x63, 0x00, 0x00, 0x11, /* add w3, w3, 0 */
419#endif
420 0x40, 0x00, 0x1f, 0xd6, /* br x2 */
421 0x1f, 0x20, 0x03, 0xd5, /* nop */
37c18eed
SD		 422};
423
07d6d2b8
AM		 424#define elf_info_to_howto elfNN_aarch64_info_to_howto
425#define elf_info_to_howto_rel elfNN_aarch64_info_to_howto
a06ea964
NC		 426
427#define AARCH64_ELF_ABI_VERSION 0
a06ea964
NC		 428
429/* In case we're on a 32-bit machine, construct a 64-bit "-1" value. */
430#define ALL_ONES (~ (bfd_vma) 0)
431
a6bb11b2
YZ		 432/* Indexed by the bfd interal reloc enumerators.
433 Therefore, the table needs to be synced with BFD_RELOC_AARCH64_*
434 in reloc.c. */
a06ea964 435
a6bb11b2 436static reloc_howto_type elfNN_aarch64_howto_table[] =
a06ea964 437{
a6bb11b2 438 EMPTY_HOWTO (0),
a06ea964 439
a6bb11b2 440 /* Basic data relocations. */
a06ea964 441
b7f28d87
JW		 442 /* Deprecated, but retained for backwards compatibility. */
443 HOWTO64 (R_AARCH64_NULL, /* type */
a06ea964 444 0, /* rightshift */
6346d5ca 445 3, /* size (0 = byte, 1 = short, 2 = long) */
a6bb11b2 446 0, /* bitsize */
a06ea964
NC		 447 FALSE, /* pc_relative */
448 0, /* bitpos */
449 complain_overflow_dont, /* complain_on_overflow */
450 bfd_elf_generic_reloc, /* special_function */
a6bb11b2 451 "R_AARCH64_NULL", /* name */
a06ea964
NC		 452 FALSE, /* partial_inplace */
453 0, /* src_mask */
a6bb11b2 454 0, /* dst_mask */
a06ea964 455 FALSE), /* pcrel_offset */
a6bb11b2 456 HOWTO (R_AARCH64_NONE, /* type */
a06ea964 457 0, /* rightshift */
6346d5ca 458 3, /* size (0 = byte, 1 = short, 2 = long) */
a06ea964
NC		 459 0, /* bitsize */
460 FALSE, /* pc_relative */
461 0, /* bitpos */
462 complain_overflow_dont, /* complain_on_overflow */
463 bfd_elf_generic_reloc, /* special_function */
a6bb11b2 464 "R_AARCH64_NONE", /* name */
a06ea964
NC		 465 FALSE, /* partial_inplace */
466 0, /* src_mask */
467 0, /* dst_mask */
468 FALSE), /* pcrel_offset */
469
470 /* .xword: (S+A) */
a6bb11b2 471 HOWTO64 (AARCH64_R (ABS64), /* type */
a06ea964
NC		 472 0, /* rightshift */
473 4, /* size (4 = long long) */
474 64, /* bitsize */
475 FALSE, /* pc_relative */
476 0, /* bitpos */
477 complain_overflow_unsigned, /* complain_on_overflow */
478 bfd_elf_generic_reloc, /* special_function */
a6bb11b2 479 AARCH64_R_STR (ABS64), /* name */
a06ea964
NC		 480 FALSE, /* partial_inplace */
481 ALL_ONES, /* src_mask */
482 ALL_ONES, /* dst_mask */
483 FALSE), /* pcrel_offset */
484
485 /* .word: (S+A) */
a6bb11b2 486 HOWTO (AARCH64_R (ABS32), /* type */
a06ea964
NC		 487 0, /* rightshift */
488 2, /* size (0 = byte, 1 = short, 2 = long) */
489 32, /* bitsize */
490 FALSE, /* pc_relative */
491 0, /* bitpos */
492 complain_overflow_unsigned, /* complain_on_overflow */
493 bfd_elf_generic_reloc, /* special_function */
a6bb11b2 494 AARCH64_R_STR (ABS32), /* name */
a06ea964
NC		 495 FALSE, /* partial_inplace */
496 0xffffffff, /* src_mask */
497 0xffffffff, /* dst_mask */
498 FALSE), /* pcrel_offset */
499
500 /* .half: (S+A) */
a6bb11b2 501 HOWTO (AARCH64_R (ABS16), /* type */
a06ea964
NC		 502 0, /* rightshift */
503 1, /* size (0 = byte, 1 = short, 2 = long) */
504 16, /* bitsize */
505 FALSE, /* pc_relative */
506 0, /* bitpos */
507 complain_overflow_unsigned, /* complain_on_overflow */
508 bfd_elf_generic_reloc, /* special_function */
a6bb11b2 509 AARCH64_R_STR (ABS16), /* name */
a06ea964
NC		 510 FALSE, /* partial_inplace */
511 0xffff, /* src_mask */
512 0xffff, /* dst_mask */
513 FALSE), /* pcrel_offset */
514
515 /* .xword: (S+A-P) */
a6bb11b2 516 HOWTO64 (AARCH64_R (PREL64), /* type */
a06ea964
NC		 517 0, /* rightshift */
518 4, /* size (4 = long long) */
519 64, /* bitsize */
520 TRUE, /* pc_relative */
521 0, /* bitpos */
522 complain_overflow_signed, /* complain_on_overflow */
523 bfd_elf_generic_reloc, /* special_function */
a6bb11b2 524 AARCH64_R_STR (PREL64), /* name */
a06ea964
NC		 525 FALSE, /* partial_inplace */
526 ALL_ONES, /* src_mask */
527 ALL_ONES, /* dst_mask */
528 TRUE), /* pcrel_offset */
529
530 /* .word: (S+A-P) */
a6bb11b2 531 HOWTO (AARCH64_R (PREL32), /* type */
a06ea964
NC		 532 0, /* rightshift */
533 2, /* size (0 = byte, 1 = short, 2 = long) */
534 32, /* bitsize */
535 TRUE, /* pc_relative */
536 0, /* bitpos */
537 complain_overflow_signed, /* complain_on_overflow */
538 bfd_elf_generic_reloc, /* special_function */
a6bb11b2 539 AARCH64_R_STR (PREL32), /* name */
a06ea964
NC		 540 FALSE, /* partial_inplace */
541 0xffffffff, /* src_mask */
542 0xffffffff, /* dst_mask */
543 TRUE), /* pcrel_offset */
544
545 /* .half: (S+A-P) */
a6bb11b2 546 HOWTO (AARCH64_R (PREL16), /* type */
a06ea964
NC		 547 0, /* rightshift */
548 1, /* size (0 = byte, 1 = short, 2 = long) */
549 16, /* bitsize */
550 TRUE, /* pc_relative */
551 0, /* bitpos */
552 complain_overflow_signed, /* complain_on_overflow */
553 bfd_elf_generic_reloc, /* special_function */
a6bb11b2 554 AARCH64_R_STR (PREL16), /* name */
a06ea964
NC		 555 FALSE, /* partial_inplace */
556 0xffff, /* src_mask */
557 0xffff, /* dst_mask */
558 TRUE), /* pcrel_offset */
559
560 /* Group relocations to create a 16, 32, 48 or 64 bit
561 unsigned data or abs address inline. */
562
563 /* MOVZ: ((S+A) >> 0) & 0xffff */
a6bb11b2 564 HOWTO (AARCH64_R (MOVW_UABS_G0), /* type */
a06ea964
NC		 565 0, /* rightshift */
566 2, /* size (0 = byte, 1 = short, 2 = long) */
567 16, /* bitsize */
568 FALSE, /* pc_relative */
569 0, /* bitpos */
570 complain_overflow_unsigned, /* complain_on_overflow */
571 bfd_elf_generic_reloc, /* special_function */
a6bb11b2 572 AARCH64_R_STR (MOVW_UABS_G0), /* name */
a06ea964
NC		 573 FALSE, /* partial_inplace */
574 0xffff, /* src_mask */
575 0xffff, /* dst_mask */
576 FALSE), /* pcrel_offset */
577
578 /* MOVK: ((S+A) >> 0) & 0xffff [no overflow check] */
a6bb11b2 579 HOWTO (AARCH64_R (MOVW_UABS_G0_NC), /* type */
a06ea964
NC		 580 0, /* rightshift */
581 2, /* size (0 = byte, 1 = short, 2 = long) */
582 16, /* bitsize */
583 FALSE, /* pc_relative */
584 0, /* bitpos */
585 complain_overflow_dont, /* complain_on_overflow */
586 bfd_elf_generic_reloc, /* special_function */
a6bb11b2 587 AARCH64_R_STR (MOVW_UABS_G0_NC), /* name */
a06ea964
NC		 588 FALSE, /* partial_inplace */
589 0xffff, /* src_mask */
590 0xffff, /* dst_mask */
591 FALSE), /* pcrel_offset */
592
593 /* MOVZ: ((S+A) >> 16) & 0xffff */
a6bb11b2 594 HOWTO (AARCH64_R (MOVW_UABS_G1), /* type */
a06ea964
NC		 595 16, /* rightshift */
596 2, /* size (0 = byte, 1 = short, 2 = long) */
597 16, /* bitsize */
598 FALSE, /* pc_relative */
599 0, /* bitpos */
600 complain_overflow_unsigned, /* complain_on_overflow */
601 bfd_elf_generic_reloc, /* special_function */
a6bb11b2 602 AARCH64_R_STR (MOVW_UABS_G1), /* name */
a06ea964
NC		 603 FALSE, /* partial_inplace */
604 0xffff, /* src_mask */
605 0xffff, /* dst_mask */
606 FALSE), /* pcrel_offset */
607
608 /* MOVK: ((S+A) >> 16) & 0xffff [no overflow check] */
a6bb11b2 609 HOWTO64 (AARCH64_R (MOVW_UABS_G1_NC), /* type */
a06ea964
NC		 610 16, /* rightshift */
611 2, /* size (0 = byte, 1 = short, 2 = long) */
612 16, /* bitsize */
613 FALSE, /* pc_relative */
614 0, /* bitpos */
615 complain_overflow_dont, /* complain_on_overflow */
616 bfd_elf_generic_reloc, /* special_function */
a6bb11b2 617 AARCH64_R_STR (MOVW_UABS_G1_NC), /* name */
a06ea964
NC		 618 FALSE, /* partial_inplace */
619 0xffff, /* src_mask */
620 0xffff, /* dst_mask */
621 FALSE), /* pcrel_offset */
622
623 /* MOVZ: ((S+A) >> 32) & 0xffff */
a6bb11b2 624 HOWTO64 (AARCH64_R (MOVW_UABS_G2), /* type */
a06ea964
NC		 625 32, /* rightshift */
626 2, /* size (0 = byte, 1 = short, 2 = long) */
627 16, /* bitsize */
628 FALSE, /* pc_relative */
629 0, /* bitpos */
630 complain_overflow_unsigned, /* complain_on_overflow */
631 bfd_elf_generic_reloc, /* special_function */
a6bb11b2 632 AARCH64_R_STR (MOVW_UABS_G2), /* name */
a06ea964
NC		 633 FALSE, /* partial_inplace */
634 0xffff, /* src_mask */
635 0xffff, /* dst_mask */
636 FALSE), /* pcrel_offset */
637
638 /* MOVK: ((S+A) >> 32) & 0xffff [no overflow check] */
a6bb11b2 639 HOWTO64 (AARCH64_R (MOVW_UABS_G2_NC), /* type */
a06ea964
NC		 640 32, /* rightshift */
641 2, /* size (0 = byte, 1 = short, 2 = long) */
642 16, /* bitsize */
643 FALSE, /* pc_relative */
644 0, /* bitpos */
645 complain_overflow_dont, /* complain_on_overflow */
646 bfd_elf_generic_reloc, /* special_function */
a6bb11b2 647 AARCH64_R_STR (MOVW_UABS_G2_NC), /* name */
a06ea964
NC		 648 FALSE, /* partial_inplace */
649 0xffff, /* src_mask */
650 0xffff, /* dst_mask */
651 FALSE), /* pcrel_offset */
652
653 /* MOVZ: ((S+A) >> 48) & 0xffff */
a6bb11b2 654 HOWTO64 (AARCH64_R (MOVW_UABS_G3), /* type */
a06ea964
NC		 655 48, /* rightshift */
656 2, /* size (0 = byte, 1 = short, 2 = long) */
657 16, /* bitsize */
658 FALSE, /* pc_relative */
659 0, /* bitpos */
660 complain_overflow_unsigned, /* complain_on_overflow */
661 bfd_elf_generic_reloc, /* special_function */
a6bb11b2 662 AARCH64_R_STR (MOVW_UABS_G3), /* name */
a06ea964
NC		 663 FALSE, /* partial_inplace */
664 0xffff, /* src_mask */
665 0xffff, /* dst_mask */
666 FALSE), /* pcrel_offset */
667
668 /* Group relocations to create high part of a 16, 32, 48 or 64 bit
669 signed data or abs address inline. Will change instruction
670 to MOVN or MOVZ depending on sign of calculated value. */
671
672 /* MOV[ZN]: ((S+A) >> 0) & 0xffff */
a6bb11b2 673 HOWTO (AARCH64_R (MOVW_SABS_G0), /* type */
a06ea964
NC		 674 0, /* rightshift */
675 2, /* size (0 = byte, 1 = short, 2 = long) */
c5e3a364 676 17, /* bitsize */
a06ea964
NC		 677 FALSE, /* pc_relative */
678 0, /* bitpos */
679 complain_overflow_signed, /* complain_on_overflow */
680 bfd_elf_generic_reloc, /* special_function */
a6bb11b2 681 AARCH64_R_STR (MOVW_SABS_G0), /* name */
a06ea964
NC		 682 FALSE, /* partial_inplace */
683 0xffff, /* src_mask */
684 0xffff, /* dst_mask */
685 FALSE), /* pcrel_offset */
686
687 /* MOV[ZN]: ((S+A) >> 16) & 0xffff */
a6bb11b2 688 HOWTO64 (AARCH64_R (MOVW_SABS_G1), /* type */
a06ea964
NC		 689 16, /* rightshift */
690 2, /* size (0 = byte, 1 = short, 2 = long) */
c5e3a364 691 17, /* bitsize */
a06ea964
NC		 692 FALSE, /* pc_relative */
693 0, /* bitpos */
694 complain_overflow_signed, /* complain_on_overflow */
695 bfd_elf_generic_reloc, /* special_function */
a6bb11b2 696 AARCH64_R_STR (MOVW_SABS_G1), /* name */
a06ea964
NC		 697 FALSE, /* partial_inplace */
698 0xffff, /* src_mask */
699 0xffff, /* dst_mask */
700 FALSE), /* pcrel_offset */
701
702 /* MOV[ZN]: ((S+A) >> 32) & 0xffff */
a6bb11b2 703 HOWTO64 (AARCH64_R (MOVW_SABS_G2), /* type */
a06ea964
NC		 704 32, /* rightshift */
705 2, /* size (0 = byte, 1 = short, 2 = long) */
c5e3a364 706 17, /* bitsize */
a06ea964
NC		 707 FALSE, /* pc_relative */
708 0, /* bitpos */
709 complain_overflow_signed, /* complain_on_overflow */
710 bfd_elf_generic_reloc, /* special_function */
a6bb11b2 711 AARCH64_R_STR (MOVW_SABS_G2), /* name */
a06ea964
NC		 712 FALSE, /* partial_inplace */
713 0xffff, /* src_mask */
714 0xffff, /* dst_mask */
715 FALSE), /* pcrel_offset */
716
32247401
RL		 717 /* Group relocations to create a 16, 32, 48 or 64 bit
718 PC relative address inline. */
719
720 /* MOV[NZ]: ((S+A-P) >> 0) & 0xffff */
e30d1fa1 721 HOWTO (AARCH64_R (MOVW_PREL_G0), /* type */
32247401
RL		 722 0, /* rightshift */
723 2, /* size (0 = byte, 1 = short, 2 = long) */
724 17, /* bitsize */
725 TRUE, /* pc_relative */
726 0, /* bitpos */
727 complain_overflow_signed, /* complain_on_overflow */
728 bfd_elf_generic_reloc, /* special_function */
729 AARCH64_R_STR (MOVW_PREL_G0), /* name */
730 FALSE, /* partial_inplace */
731 0xffff, /* src_mask */
732 0xffff, /* dst_mask */
733 TRUE), /* pcrel_offset */
734
735 /* MOVK: ((S+A-P) >> 0) & 0xffff [no overflow check] */
e30d1fa1 736 HOWTO (AARCH64_R (MOVW_PREL_G0_NC), /* type */
32247401
RL		 737 0, /* rightshift */
738 2, /* size (0 = byte, 1 = short, 2 = long) */
739 16, /* bitsize */
740 TRUE, /* pc_relative */
741 0, /* bitpos */
742 complain_overflow_dont, /* complain_on_overflow */
743 bfd_elf_generic_reloc, /* special_function */
744 AARCH64_R_STR (MOVW_PREL_G0_NC), /* name */
745 FALSE, /* partial_inplace */
746 0xffff, /* src_mask */
747 0xffff, /* dst_mask */
748 TRUE), /* pcrel_offset */
749
750 /* MOV[NZ]: ((S+A-P) >> 16) & 0xffff */
e30d1fa1 751 HOWTO (AARCH64_R (MOVW_PREL_G1), /* type */
32247401
RL		 752 16, /* rightshift */
753 2, /* size (0 = byte, 1 = short, 2 = long) */
754 17, /* bitsize */
755 TRUE, /* pc_relative */
756 0, /* bitpos */
757 complain_overflow_signed, /* complain_on_overflow */
758 bfd_elf_generic_reloc, /* special_function */
759 AARCH64_R_STR (MOVW_PREL_G1), /* name */
760 FALSE, /* partial_inplace */
761 0xffff, /* src_mask */
762 0xffff, /* dst_mask */
763 TRUE), /* pcrel_offset */
764
765 /* MOVK: ((S+A-P) >> 16) & 0xffff [no overflow check] */
766 HOWTO64 (AARCH64_R (MOVW_PREL_G1_NC), /* type */
767 16, /* rightshift */
768 2, /* size (0 = byte, 1 = short, 2 = long) */
769 16, /* bitsize */
770 TRUE, /* pc_relative */
771 0, /* bitpos */
772 complain_overflow_dont, /* complain_on_overflow */
773 bfd_elf_generic_reloc, /* special_function */
774 AARCH64_R_STR (MOVW_PREL_G1_NC), /* name */
775 FALSE, /* partial_inplace */
776 0xffff, /* src_mask */
777 0xffff, /* dst_mask */
778 TRUE), /* pcrel_offset */
779
780 /* MOV[NZ]: ((S+A-P) >> 32) & 0xffff */
781 HOWTO64 (AARCH64_R (MOVW_PREL_G2), /* type */
782 32, /* rightshift */
783 2, /* size (0 = byte, 1 = short, 2 = long) */
784 17, /* bitsize */
785 TRUE, /* pc_relative */
786 0, /* bitpos */
787 complain_overflow_signed, /* complain_on_overflow */
788 bfd_elf_generic_reloc, /* special_function */
789 AARCH64_R_STR (MOVW_PREL_G2), /* name */
790 FALSE, /* partial_inplace */
791 0xffff, /* src_mask */
792 0xffff, /* dst_mask */
793 TRUE), /* pcrel_offset */
794
795 /* MOVK: ((S+A-P) >> 32) & 0xffff [no overflow check] */
796 HOWTO64 (AARCH64_R (MOVW_PREL_G2_NC), /* type */
797 32, /* rightshift */
798 2, /* size (0 = byte, 1 = short, 2 = long) */
799 16, /* bitsize */
800 TRUE, /* pc_relative */
801 0, /* bitpos */
802 complain_overflow_dont, /* complain_on_overflow */
803 bfd_elf_generic_reloc, /* special_function */
804 AARCH64_R_STR (MOVW_PREL_G2_NC), /* name */
805 FALSE, /* partial_inplace */
806 0xffff, /* src_mask */
807 0xffff, /* dst_mask */
808 TRUE), /* pcrel_offset */
809
810 /* MOV[NZ]: ((S+A-P) >> 48) & 0xffff */
811 HOWTO64 (AARCH64_R (MOVW_PREL_G3), /* type */
812 48, /* rightshift */
813 2, /* size (0 = byte, 1 = short, 2 = long) */
814 16, /* bitsize */
815 TRUE, /* pc_relative */
816 0, /* bitpos */
817 complain_overflow_dont, /* complain_on_overflow */
818 bfd_elf_generic_reloc, /* special_function */
819 AARCH64_R_STR (MOVW_PREL_G3), /* name */
820 FALSE, /* partial_inplace */
821 0xffff, /* src_mask */
822 0xffff, /* dst_mask */
823 TRUE), /* pcrel_offset */
824
a06ea964
NC		 825/* Relocations to generate 19, 21 and 33 bit PC-relative load/store
826 addresses: PG(x) is (x & ~0xfff). */
827
828 /* LD-lit: ((S+A-P) >> 2) & 0x7ffff */
a6bb11b2 829 HOWTO (AARCH64_R (LD_PREL_LO19), /* type */
a06ea964
NC		 830 2, /* rightshift */
831 2, /* size (0 = byte, 1 = short, 2 = long) */
832 19, /* bitsize */
833 TRUE, /* pc_relative */
834 0, /* bitpos */
835 complain_overflow_signed, /* complain_on_overflow */
836 bfd_elf_generic_reloc, /* special_function */
a6bb11b2 837 AARCH64_R_STR (LD_PREL_LO19), /* name */
a06ea964
NC		 838 FALSE, /* partial_inplace */
839 0x7ffff, /* src_mask */
840 0x7ffff, /* dst_mask */
841 TRUE), /* pcrel_offset */
842
843 /* ADR: (S+A-P) & 0x1fffff */
a6bb11b2 844 HOWTO (AARCH64_R (ADR_PREL_LO21), /* type */
a06ea964
NC		 845 0, /* rightshift */
846 2, /* size (0 = byte, 1 = short, 2 = long) */
847 21, /* bitsize */
848 TRUE, /* pc_relative */
849 0, /* bitpos */
850 complain_overflow_signed, /* complain_on_overflow */
851 bfd_elf_generic_reloc, /* special_function */
a6bb11b2 852 AARCH64_R_STR (ADR_PREL_LO21), /* name */
a06ea964
NC		 853 FALSE, /* partial_inplace */
854 0x1fffff, /* src_mask */
855 0x1fffff, /* dst_mask */
856 TRUE), /* pcrel_offset */
857
858 /* ADRP: ((PG(S+A)-PG(P)) >> 12) & 0x1fffff */
a6bb11b2 859 HOWTO (AARCH64_R (ADR_PREL_PG_HI21), /* type */
a06ea964
NC		 860 12, /* rightshift */
861 2, /* size (0 = byte, 1 = short, 2 = long) */
862 21, /* bitsize */
863 TRUE, /* pc_relative */
864 0, /* bitpos */
865 complain_overflow_signed, /* complain_on_overflow */
866 bfd_elf_generic_reloc, /* special_function */
a6bb11b2 867 AARCH64_R_STR (ADR_PREL_PG_HI21), /* name */
a06ea964
NC		 868 FALSE, /* partial_inplace */
869 0x1fffff, /* src_mask */
870 0x1fffff, /* dst_mask */
871 TRUE), /* pcrel_offset */
872
873 /* ADRP: ((PG(S+A)-PG(P)) >> 12) & 0x1fffff [no overflow check] */
a6bb11b2 874 HOWTO64 (AARCH64_R (ADR_PREL_PG_HI21_NC), /* type */
a06ea964
NC		 875 12, /* rightshift */
876 2, /* size (0 = byte, 1 = short, 2 = long) */
877 21, /* bitsize */
878 TRUE, /* pc_relative */
879 0, /* bitpos */
880 complain_overflow_dont, /* complain_on_overflow */
881 bfd_elf_generic_reloc, /* special_function */
a6bb11b2 882 AARCH64_R_STR (ADR_PREL_PG_HI21_NC), /* name */
a06ea964
NC		 883 FALSE, /* partial_inplace */
884 0x1fffff, /* src_mask */
885 0x1fffff, /* dst_mask */
886 TRUE), /* pcrel_offset */
887
888 /* ADD: (S+A) & 0xfff [no overflow check] */
a6bb11b2 889 HOWTO (AARCH64_R (ADD_ABS_LO12_NC), /* type */
a06ea964
NC		 890 0, /* rightshift */
891 2, /* size (0 = byte, 1 = short, 2 = long) */
892 12, /* bitsize */
893 FALSE, /* pc_relative */
894 10, /* bitpos */
895 complain_overflow_dont, /* complain_on_overflow */
896 bfd_elf_generic_reloc, /* special_function */
a6bb11b2 897 AARCH64_R_STR (ADD_ABS_LO12_NC), /* name */
a06ea964
NC		 898 FALSE, /* partial_inplace */
899 0x3ffc00, /* src_mask */
900 0x3ffc00, /* dst_mask */
901 FALSE), /* pcrel_offset */
902
903 /* LD/ST8: (S+A) & 0xfff */
a6bb11b2 904 HOWTO (AARCH64_R (LDST8_ABS_LO12_NC), /* type */
a06ea964
NC		 905 0, /* rightshift */
906 2, /* size (0 = byte, 1 = short, 2 = long) */
907 12, /* bitsize */
908 FALSE, /* pc_relative */
909 0, /* bitpos */
910 complain_overflow_dont, /* complain_on_overflow */
911 bfd_elf_generic_reloc, /* special_function */
a6bb11b2 912 AARCH64_R_STR (LDST8_ABS_LO12_NC), /* name */
a06ea964
NC		 913 FALSE, /* partial_inplace */
914 0xfff, /* src_mask */
915 0xfff, /* dst_mask */
916 FALSE), /* pcrel_offset */
917
918 /* Relocations for control-flow instructions. */
919
920 /* TBZ/NZ: ((S+A-P) >> 2) & 0x3fff */
a6bb11b2 921 HOWTO (AARCH64_R (TSTBR14), /* type */
a06ea964
NC		 922 2, /* rightshift */
923 2, /* size (0 = byte, 1 = short, 2 = long) */
924 14, /* bitsize */
925 TRUE, /* pc_relative */
926 0, /* bitpos */
927 complain_overflow_signed, /* complain_on_overflow */
928 bfd_elf_generic_reloc, /* special_function */
a6bb11b2 929 AARCH64_R_STR (TSTBR14), /* name */
a06ea964
NC		 930 FALSE, /* partial_inplace */
931 0x3fff, /* src_mask */
932 0x3fff, /* dst_mask */
933 TRUE), /* pcrel_offset */
934
935 /* B.cond: ((S+A-P) >> 2) & 0x7ffff */
a6bb11b2 936 HOWTO (AARCH64_R (CONDBR19), /* type */
a06ea964
NC		 937 2, /* rightshift */
938 2, /* size (0 = byte, 1 = short, 2 = long) */
939 19, /* bitsize */
940 TRUE, /* pc_relative */
941 0, /* bitpos */
942 complain_overflow_signed, /* complain_on_overflow */
943 bfd_elf_generic_reloc, /* special_function */
a6bb11b2 944 AARCH64_R_STR (CONDBR19), /* name */
a06ea964
NC		 945 FALSE, /* partial_inplace */
946 0x7ffff, /* src_mask */
947 0x7ffff, /* dst_mask */
948 TRUE), /* pcrel_offset */
949
a06ea964 950 /* B: ((S+A-P) >> 2) & 0x3ffffff */
a6bb11b2 951 HOWTO (AARCH64_R (JUMP26), /* type */
a06ea964
NC		 952 2, /* rightshift */
953 2, /* size (0 = byte, 1 = short, 2 = long) */
954 26, /* bitsize */
955 TRUE, /* pc_relative */
956 0, /* bitpos */
957 complain_overflow_signed, /* complain_on_overflow */
958 bfd_elf_generic_reloc, /* special_function */
a6bb11b2 959 AARCH64_R_STR (JUMP26), /* name */
a06ea964
NC		 960 FALSE, /* partial_inplace */
961 0x3ffffff, /* src_mask */
962 0x3ffffff, /* dst_mask */
963 TRUE), /* pcrel_offset */
964
965 /* BL: ((S+A-P) >> 2) & 0x3ffffff */
a6bb11b2 966 HOWTO (AARCH64_R (CALL26), /* type */
a06ea964
NC		 967 2, /* rightshift */
968 2, /* size (0 = byte, 1 = short, 2 = long) */
969 26, /* bitsize */
970 TRUE, /* pc_relative */
971 0, /* bitpos */
972 complain_overflow_signed, /* complain_on_overflow */
973 bfd_elf_generic_reloc, /* special_function */
a6bb11b2 974 AARCH64_R_STR (CALL26), /* name */
a06ea964
NC		 975 FALSE, /* partial_inplace */
976 0x3ffffff, /* src_mask */
977 0x3ffffff, /* dst_mask */
978 TRUE), /* pcrel_offset */
979
980 /* LD/ST16: (S+A) & 0xffe */
a6bb11b2 981 HOWTO (AARCH64_R (LDST16_ABS_LO12_NC), /* type */
a06ea964
NC		 982 1, /* rightshift */
983 2, /* size (0 = byte, 1 = short, 2 = long) */
984 12, /* bitsize */
985 FALSE, /* pc_relative */
986 0, /* bitpos */
987 complain_overflow_dont, /* complain_on_overflow */
988 bfd_elf_generic_reloc, /* special_function */
a6bb11b2 989 AARCH64_R_STR (LDST16_ABS_LO12_NC), /* name */
a06ea964
NC		 990 FALSE, /* partial_inplace */
991 0xffe, /* src_mask */
992 0xffe, /* dst_mask */
993 FALSE), /* pcrel_offset */
994
995 /* LD/ST32: (S+A) & 0xffc */
a6bb11b2 996 HOWTO (AARCH64_R (LDST32_ABS_LO12_NC), /* type */
a06ea964
NC		 997 2, /* rightshift */
998 2, /* size (0 = byte, 1 = short, 2 = long) */
999 12, /* bitsize */
1000 FALSE, /* pc_relative */
1001 0, /* bitpos */
1002 complain_overflow_dont, /* complain_on_overflow */
1003 bfd_elf_generic_reloc, /* special_function */
a6bb11b2 1004 AARCH64_R_STR (LDST32_ABS_LO12_NC), /* name */
a06ea964
NC		 1005 FALSE, /* partial_inplace */
1006 0xffc, /* src_mask */
1007 0xffc, /* dst_mask */
1008 FALSE), /* pcrel_offset */
1009
1010 /* LD/ST64: (S+A) & 0xff8 */
a6bb11b2 1011 HOWTO (AARCH64_R (LDST64_ABS_LO12_NC), /* type */
a06ea964
NC		 1012 3, /* rightshift */
1013 2, /* size (0 = byte, 1 = short, 2 = long) */
1014 12, /* bitsize */
1015 FALSE, /* pc_relative */
1016 0, /* bitpos */
1017 complain_overflow_dont, /* complain_on_overflow */
1018 bfd_elf_generic_reloc, /* special_function */
a6bb11b2 1019 AARCH64_R_STR (LDST64_ABS_LO12_NC), /* name */
a06ea964
NC		 1020 FALSE, /* partial_inplace */
1021 0xff8, /* src_mask */
1022 0xff8, /* dst_mask */
1023 FALSE), /* pcrel_offset */
1024
a06ea964 1025 /* LD/ST128: (S+A) & 0xff0 */
a6bb11b2 1026 HOWTO (AARCH64_R (LDST128_ABS_LO12_NC), /* type */
a06ea964
NC		 1027 4, /* rightshift */
1028 2, /* size (0 = byte, 1 = short, 2 = long) */
1029 12, /* bitsize */
1030 FALSE, /* pc_relative */
1031 0, /* bitpos */
1032 complain_overflow_dont, /* complain_on_overflow */
1033 bfd_elf_generic_reloc, /* special_function */
a6bb11b2 1034 AARCH64_R_STR (LDST128_ABS_LO12_NC), /* name */
a06ea964
NC		 1035 FALSE, /* partial_inplace */
1036 0xff0, /* src_mask */
1037 0xff0, /* dst_mask */
1038 FALSE), /* pcrel_offset */
1039
f41aef5f
RE		 1040 /* Set a load-literal immediate field to bits
1041 0x1FFFFC of G(S)-P */
a6bb11b2 1042 HOWTO (AARCH64_R (GOT_LD_PREL19), /* type */
f41aef5f
RE		 1043 2, /* rightshift */
1044 2, /* size (0 = byte,1 = short,2 = long) */
1045 19, /* bitsize */
1046 TRUE, /* pc_relative */
1047 0, /* bitpos */
1048 complain_overflow_signed, /* complain_on_overflow */
1049 bfd_elf_generic_reloc, /* special_function */
a6bb11b2 1050 AARCH64_R_STR (GOT_LD_PREL19), /* name */
f41aef5f
RE		 1051 FALSE, /* partial_inplace */
1052 0xffffe0, /* src_mask */
1053 0xffffe0, /* dst_mask */
1054 TRUE), /* pcrel_offset */
1055
a06ea964
NC		 1056 /* Get to the page for the GOT entry for the symbol
1057 (G(S) - P) using an ADRP instruction. */
a6bb11b2 1058 HOWTO (AARCH64_R (ADR_GOT_PAGE), /* type */
a06ea964
NC		 1059 12, /* rightshift */
1060 2, /* size (0 = byte, 1 = short, 2 = long) */
1061 21, /* bitsize */
1062 TRUE, /* pc_relative */
1063 0, /* bitpos */
1064 complain_overflow_dont, /* complain_on_overflow */
1065 bfd_elf_generic_reloc, /* special_function */
a6bb11b2 1066 AARCH64_R_STR (ADR_GOT_PAGE), /* name */
a06ea964
NC		 1067 FALSE, /* partial_inplace */
1068 0x1fffff, /* src_mask */
1069 0x1fffff, /* dst_mask */
1070 TRUE), /* pcrel_offset */
1071
a6bb11b2
YZ		 1072 /* LD64: GOT offset G(S) & 0xff8 */
1073 HOWTO64 (AARCH64_R (LD64_GOT_LO12_NC), /* type */
a06ea964
NC		 1074 3, /* rightshift */
1075 2, /* size (0 = byte, 1 = short, 2 = long) */
1076 12, /* bitsize */
1077 FALSE, /* pc_relative */
1078 0, /* bitpos */
1079 complain_overflow_dont, /* complain_on_overflow */
1080 bfd_elf_generic_reloc, /* special_function */
a6bb11b2 1081 AARCH64_R_STR (LD64_GOT_LO12_NC), /* name */
a06ea964
NC		 1082 FALSE, /* partial_inplace */
1083 0xff8, /* src_mask */
1084 0xff8, /* dst_mask */
a6bb11b2 1085 FALSE), /* pcrel_offset */
a06ea964 1086
a6bb11b2
YZ		 1087 /* LD32: GOT offset G(S) & 0xffc */
1088 HOWTO32 (AARCH64_R (LD32_GOT_LO12_NC), /* type */
1089 2, /* rightshift */
1090 2, /* size (0 = byte, 1 = short, 2 = long) */
1091 12, /* bitsize */
1092 FALSE, /* pc_relative */
1093 0, /* bitpos */
1094 complain_overflow_dont, /* complain_on_overflow */
1095 bfd_elf_generic_reloc, /* special_function */
1096 AARCH64_R_STR (LD32_GOT_LO12_NC), /* name */
1097 FALSE, /* partial_inplace */
1098 0xffc, /* src_mask */
1099 0xffc, /* dst_mask */
1100 FALSE), /* pcrel_offset */
a06ea964 1101
ca632371
RL		 1102 /* Lower 16 bits of GOT offset for the symbol. */
1103 HOWTO64 (AARCH64_R (MOVW_GOTOFF_G0_NC), /* type */
1104 0, /* rightshift */
1105 2, /* size (0 = byte, 1 = short, 2 = long) */
1106 16, /* bitsize */
1107 FALSE, /* pc_relative */
1108 0, /* bitpos */
1109 complain_overflow_dont, /* complain_on_overflow */
1110 bfd_elf_generic_reloc, /* special_function */
1111 AARCH64_R_STR (MOVW_GOTOFF_G0_NC), /* name */
1112 FALSE, /* partial_inplace */
1113 0xffff, /* src_mask */
1114 0xffff, /* dst_mask */
1115 FALSE), /* pcrel_offset */
1116
654248e7
RL		 1117 /* Higher 16 bits of GOT offset for the symbol. */
1118 HOWTO64 (AARCH64_R (MOVW_GOTOFF_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 (MOVW_GOTOFF_G1), /* name */
1127 FALSE, /* partial_inplace */
1128 0xffff, /* src_mask */
1129 0xffff, /* dst_mask */
1130 FALSE), /* pcrel_offset */
1131
87f5fbcc
RL		 1132 /* LD64: GOT offset for the symbol. */
1133 HOWTO64 (AARCH64_R (LD64_GOTOFF_LO15), /* type */
1134 3, /* 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 (LD64_GOTOFF_LO15), /* name */
1142 FALSE, /* partial_inplace */
1143 0x7ff8, /* src_mask */
1144 0x7ff8, /* dst_mask */
1145 FALSE), /* pcrel_offset */
1146
3d715ce4
JW		 1147 /* LD32: GOT offset to the page address of GOT table.
1148 (G(S) - PAGE (_GLOBAL_OFFSET_TABLE_)) & 0x5ffc. */
1149 HOWTO32 (AARCH64_R (LD32_GOTPAGE_LO14), /* type */
1150 2, /* rightshift */
1151 2, /* size (0 = byte, 1 = short, 2 = long) */
1152 12, /* bitsize */
1153 FALSE, /* pc_relative */
1154 0, /* bitpos */
1155 complain_overflow_unsigned, /* complain_on_overflow */
1156 bfd_elf_generic_reloc, /* special_function */
1157 AARCH64_R_STR (LD32_GOTPAGE_LO14), /* name */
1158 FALSE, /* partial_inplace */
1159 0x5ffc, /* src_mask */
1160 0x5ffc, /* dst_mask */
1161 FALSE), /* pcrel_offset */
1162
a921b5bd
JW		 1163 /* LD64: GOT offset to the page address of GOT table.
1164 (G(S) - PAGE (_GLOBAL_OFFSET_TABLE_)) & 0x7ff8. */
1165 HOWTO64 (AARCH64_R (LD64_GOTPAGE_LO15), /* type */
1166 3, /* rightshift */
1167 2, /* size (0 = byte, 1 = short, 2 = long) */
1168 12, /* bitsize */
1169 FALSE, /* pc_relative */
1170 0, /* bitpos */
1171 complain_overflow_unsigned, /* complain_on_overflow */
1172 bfd_elf_generic_reloc, /* special_function */
1173 AARCH64_R_STR (LD64_GOTPAGE_LO15), /* name */
1174 FALSE, /* partial_inplace */
1175 0x7ff8, /* src_mask */
1176 0x7ff8, /* dst_mask */
1177 FALSE), /* pcrel_offset */
1178
a06ea964
NC		 1179 /* Get to the page for the GOT entry for the symbol
1180 (G(S) - P) using an ADRP instruction. */
a6bb11b2 1181 HOWTO (AARCH64_R (TLSGD_ADR_PAGE21), /* type */
a06ea964
NC		 1182 12, /* rightshift */
1183 2, /* size (0 = byte, 1 = short, 2 = long) */
1184 21, /* bitsize */
1185 TRUE, /* pc_relative */
1186 0, /* bitpos */
1187 complain_overflow_dont, /* complain_on_overflow */
1188 bfd_elf_generic_reloc, /* special_function */
a6bb11b2 1189 AARCH64_R_STR (TLSGD_ADR_PAGE21), /* name */
a06ea964
NC		 1190 FALSE, /* partial_inplace */
1191 0x1fffff, /* src_mask */
1192 0x1fffff, /* dst_mask */
1193 TRUE), /* pcrel_offset */
1194
3c12b054
MS		 1195 HOWTO (AARCH64_R (TLSGD_ADR_PREL21), /* type */
1196 0, /* rightshift */
1197 2, /* size (0 = byte, 1 = short, 2 = long) */
1198 21, /* bitsize */
1199 TRUE, /* pc_relative */
1200 0, /* bitpos */
1201 complain_overflow_dont, /* complain_on_overflow */
1202 bfd_elf_generic_reloc, /* special_function */
1203 AARCH64_R_STR (TLSGD_ADR_PREL21), /* name */
1204 FALSE, /* partial_inplace */
1205 0x1fffff, /* src_mask */
1206 0x1fffff, /* dst_mask */
1207 TRUE), /* pcrel_offset */
1208
a06ea964 1209 /* ADD: GOT offset G(S) & 0xff8 [no overflow check] */
a6bb11b2 1210 HOWTO (AARCH64_R (TLSGD_ADD_LO12_NC), /* type */
a06ea964
NC		 1211 0, /* rightshift */
1212 2, /* size (0 = byte, 1 = short, 2 = long) */
1213 12, /* bitsize */
1214 FALSE, /* pc_relative */
1215 0, /* bitpos */
1216 complain_overflow_dont, /* complain_on_overflow */
1217 bfd_elf_generic_reloc, /* special_function */
a6bb11b2 1218 AARCH64_R_STR (TLSGD_ADD_LO12_NC), /* name */
a06ea964
NC		 1219 FALSE, /* partial_inplace */
1220 0xfff, /* src_mask */
1221 0xfff, /* dst_mask */
1222 FALSE), /* pcrel_offset */
1223
3e8286c0
RL		 1224 /* Lower 16 bits of GOT offset to tls_index. */
1225 HOWTO64 (AARCH64_R (TLSGD_MOVW_G0_NC), /* type */
1226 0, /* rightshift */
1227 2, /* size (0 = byte, 1 = short, 2 = long) */
1228 16, /* bitsize */
1229 FALSE, /* pc_relative */
1230 0, /* bitpos */
1231 complain_overflow_dont, /* complain_on_overflow */
1232 bfd_elf_generic_reloc, /* special_function */
1233 AARCH64_R_STR (TLSGD_MOVW_G0_NC), /* name */
1234 FALSE, /* partial_inplace */
1235 0xffff, /* src_mask */
1236 0xffff, /* dst_mask */
1237 FALSE), /* pcrel_offset */
1238
1aa66fb1
RL		 1239 /* Higher 16 bits of GOT offset to tls_index. */
1240 HOWTO64 (AARCH64_R (TLSGD_MOVW_G1), /* type */
1241 16, /* rightshift */
1242 2, /* size (0 = byte, 1 = short, 2 = long) */
1243 16, /* bitsize */
1244 FALSE, /* pc_relative */
1245 0, /* bitpos */
1246 complain_overflow_unsigned, /* complain_on_overflow */
1247 bfd_elf_generic_reloc, /* special_function */
1248 AARCH64_R_STR (TLSGD_MOVW_G1), /* name */
1249 FALSE, /* partial_inplace */
1250 0xffff, /* src_mask */
1251 0xffff, /* dst_mask */
1252 FALSE), /* pcrel_offset */
1253
a6bb11b2 1254 HOWTO (AARCH64_R (TLSIE_ADR_GOTTPREL_PAGE21), /* type */
a06ea964
NC		 1255 12, /* rightshift */
1256 2, /* size (0 = byte, 1 = short, 2 = long) */
1257 21, /* bitsize */
1258 FALSE, /* pc_relative */
1259 0, /* bitpos */
1260 complain_overflow_dont, /* complain_on_overflow */
1261 bfd_elf_generic_reloc, /* special_function */
a6bb11b2 1262 AARCH64_R_STR (TLSIE_ADR_GOTTPREL_PAGE21), /* name */
a06ea964
NC		 1263 FALSE, /* partial_inplace */
1264 0x1fffff, /* src_mask */
1265 0x1fffff, /* dst_mask */
1266 FALSE), /* pcrel_offset */
1267
a6bb11b2 1268 HOWTO64 (AARCH64_R (TLSIE_LD64_GOTTPREL_LO12_NC), /* type */
a06ea964
NC		 1269 3, /* rightshift */
1270 2, /* size (0 = byte, 1 = short, 2 = long) */
1271 12, /* bitsize */
1272 FALSE, /* pc_relative */
1273 0, /* bitpos */
1274 complain_overflow_dont, /* complain_on_overflow */
1275 bfd_elf_generic_reloc, /* special_function */
a6bb11b2 1276 AARCH64_R_STR (TLSIE_LD64_GOTTPREL_LO12_NC), /* name */
a06ea964
NC		 1277 FALSE, /* partial_inplace */
1278 0xff8, /* src_mask */
1279 0xff8, /* dst_mask */
1280 FALSE), /* pcrel_offset */
1281
a6bb11b2
YZ		 1282 HOWTO32 (AARCH64_R (TLSIE_LD32_GOTTPREL_LO12_NC), /* type */
1283 2, /* rightshift */
1284 2, /* size (0 = byte, 1 = short, 2 = long) */
1285 12, /* bitsize */
1286 FALSE, /* pc_relative */
1287 0, /* bitpos */
1288 complain_overflow_dont, /* complain_on_overflow */
1289 bfd_elf_generic_reloc, /* special_function */
1290 AARCH64_R_STR (TLSIE_LD32_GOTTPREL_LO12_NC), /* name */
1291 FALSE, /* partial_inplace */
1292 0xffc, /* src_mask */
1293 0xffc, /* dst_mask */
1294 FALSE), /* pcrel_offset */
1295
1296 HOWTO (AARCH64_R (TLSIE_LD_GOTTPREL_PREL19), /* type */
bb3f9ed8 1297 2, /* rightshift */
a06ea964 1298 2, /* size (0 = byte, 1 = short, 2 = long) */
043bf05a 1299 19, /* bitsize */
a06ea964
NC		 1300 FALSE, /* pc_relative */
1301 0, /* bitpos */
1302 complain_overflow_dont, /* complain_on_overflow */
1303 bfd_elf_generic_reloc, /* special_function */
a6bb11b2 1304 AARCH64_R_STR (TLSIE_LD_GOTTPREL_PREL19), /* name */
a06ea964
NC		 1305 FALSE, /* partial_inplace */
1306 0x1ffffc, /* src_mask */
1307 0x1ffffc, /* dst_mask */
1308 FALSE), /* pcrel_offset */
1309
3b957e5b
RL		 1310 HOWTO64 (AARCH64_R (TLSIE_MOVW_GOTTPREL_G0_NC), /* type */
1311 0, /* rightshift */
1312 2, /* size (0 = byte, 1 = short, 2 = long) */
1313 16, /* bitsize */
1314 FALSE, /* pc_relative */
1315 0, /* bitpos */
1316 complain_overflow_dont, /* complain_on_overflow */
1317 bfd_elf_generic_reloc, /* special_function */
1318 AARCH64_R_STR (TLSIE_MOVW_GOTTPREL_G0_NC), /* name */
1319 FALSE, /* partial_inplace */
1320 0xffff, /* src_mask */
1321 0xffff, /* dst_mask */
1322 FALSE), /* pcrel_offset */
1323
1324 HOWTO64 (AARCH64_R (TLSIE_MOVW_GOTTPREL_G1), /* type */
1325 16, /* rightshift */
1326 2, /* size (0 = byte, 1 = short, 2 = long) */
1327 16, /* bitsize */
1328 FALSE, /* pc_relative */
1329 0, /* bitpos */
1330 complain_overflow_unsigned, /* complain_on_overflow */
1331 bfd_elf_generic_reloc, /* special_function */
1332 AARCH64_R_STR (TLSIE_MOVW_GOTTPREL_G1), /* name */
1333 FALSE, /* partial_inplace */
1334 0xffff, /* src_mask */
1335 0xffff, /* dst_mask */
1336 FALSE), /* pcrel_offset */
1337
49df5539
JW		 1338 /* ADD: bit[23:12] of byte offset to module TLS base address. */
1339 HOWTO (AARCH64_R (TLSLD_ADD_DTPREL_HI12), /* type */
1340 12, /* rightshift */
1341 2, /* size (0 = byte, 1 = short, 2 = long) */
1342 12, /* bitsize */
1343 FALSE, /* pc_relative */
1344 0, /* bitpos */
1345 complain_overflow_unsigned, /* complain_on_overflow */
1346 bfd_elf_generic_reloc, /* special_function */
1347 AARCH64_R_STR (TLSLD_ADD_DTPREL_HI12), /* name */
1348 FALSE, /* partial_inplace */
1349 0xfff, /* src_mask */
1350 0xfff, /* dst_mask */
1351 FALSE), /* pcrel_offset */
1352
70151fb5
JW		 1353 /* Unsigned 12 bit byte offset to module TLS base address. */
1354 HOWTO (AARCH64_R (TLSLD_ADD_DTPREL_LO12), /* type */
1355 0, /* rightshift */
1356 2, /* size (0 = byte, 1 = short, 2 = long) */
1357 12, /* bitsize */
1358 FALSE, /* pc_relative */
1359 0, /* bitpos */
1360 complain_overflow_unsigned, /* complain_on_overflow */
1361 bfd_elf_generic_reloc, /* special_function */
1362 AARCH64_R_STR (TLSLD_ADD_DTPREL_LO12), /* name */
1363 FALSE, /* partial_inplace */
1364 0xfff, /* src_mask */
1365 0xfff, /* dst_mask */
1366 FALSE), /* pcrel_offset */
13289c10
JW		 1367
1368 /* No overflow check version of BFD_RELOC_AARCH64_TLSLD_ADD_DTPREL_LO12. */
1369 HOWTO (AARCH64_R (TLSLD_ADD_DTPREL_LO12_NC), /* type */
1370 0, /* rightshift */
1371 2, /* size (0 = byte, 1 = short, 2 = long) */
1372 12, /* bitsize */
1373 FALSE, /* pc_relative */
1374 0, /* bitpos */
1375 complain_overflow_dont, /* complain_on_overflow */
1376 bfd_elf_generic_reloc, /* special_function */
1377 AARCH64_R_STR (TLSLD_ADD_DTPREL_LO12_NC), /* name */
1378 FALSE, /* partial_inplace */
1379 0xfff, /* src_mask */
1380 0xfff, /* dst_mask */
1381 FALSE), /* pcrel_offset */
70151fb5 1382
a12fad50
JW		 1383 /* ADD: GOT offset G(S) & 0xff8 [no overflow check] */
1384 HOWTO (AARCH64_R (TLSLD_ADD_LO12_NC), /* type */
1385 0, /* rightshift */
1386 2, /* size (0 = byte, 1 = short, 2 = long) */
1387 12, /* bitsize */
1388 FALSE, /* pc_relative */
1389 0, /* bitpos */
1390 complain_overflow_dont, /* complain_on_overflow */
1391 bfd_elf_generic_reloc, /* special_function */
1392 AARCH64_R_STR (TLSLD_ADD_LO12_NC), /* name */
1393 FALSE, /* partial_inplace */
1394 0xfff, /* src_mask */
1395 0xfff, /* dst_mask */
1396 FALSE), /* pcrel_offset */
1397
1107e076
JW		 1398 /* Get to the page for the GOT entry for the symbol
1399 (G(S) - P) using an ADRP instruction. */
1400 HOWTO (AARCH64_R (TLSLD_ADR_PAGE21), /* type */
1401 12, /* rightshift */
1402 2, /* size (0 = byte, 1 = short, 2 = long) */
1403 21, /* bitsize */
1404 TRUE, /* pc_relative */
1405 0, /* bitpos */
1406 complain_overflow_signed, /* complain_on_overflow */
1407 bfd_elf_generic_reloc, /* special_function */
1408 AARCH64_R_STR (TLSLD_ADR_PAGE21), /* name */
1409 FALSE, /* partial_inplace */
1410 0x1fffff, /* src_mask */
1411 0x1fffff, /* dst_mask */
1412 TRUE), /* pcrel_offset */
1413
6c37fedc
JW		 1414 HOWTO (AARCH64_R (TLSLD_ADR_PREL21), /* type */
1415 0, /* rightshift */
1416 2, /* size (0 = byte, 1 = short, 2 = long) */
1417 21, /* bitsize */
1418 TRUE, /* pc_relative */
1419 0, /* bitpos */
1420 complain_overflow_signed, /* complain_on_overflow */
1421 bfd_elf_generic_reloc, /* special_function */
1422 AARCH64_R_STR (TLSLD_ADR_PREL21), /* name */
1423 FALSE, /* partial_inplace */
1424 0x1fffff, /* src_mask */
1425 0x1fffff, /* dst_mask */
1426 TRUE), /* pcrel_offset */
1427
4c562523
JW		 1428 /* LD/ST16: bit[11:1] of byte offset to module TLS base address. */
1429 HOWTO64 (AARCH64_R (TLSLD_LDST16_DTPREL_LO12), /* type */
1430 1, /* rightshift */
1431 2, /* size (0 = byte, 1 = short, 2 = long) */
1432 11, /* bitsize */
1433 FALSE, /* pc_relative */
1434 10, /* bitpos */
1435 complain_overflow_unsigned, /* complain_on_overflow */
1436 bfd_elf_generic_reloc, /* special_function */
1437 AARCH64_R_STR (TLSLD_LDST16_DTPREL_LO12), /* name */
1438 FALSE, /* partial_inplace */
1439 0x1ffc00, /* src_mask */
1440 0x1ffc00, /* dst_mask */
1441 FALSE), /* pcrel_offset */
1442
1443 /* Same as BFD_RELOC_AARCH64_TLSLD_LDST16_DTPREL_LO12, but no overflow check. */
1444 HOWTO64 (AARCH64_R (TLSLD_LDST16_DTPREL_LO12_NC), /* type */
1445 1, /* rightshift */
1446 2, /* size (0 = byte, 1 = short, 2 = long) */
1447 11, /* bitsize */
1448 FALSE, /* pc_relative */
1449 10, /* bitpos */
1450 complain_overflow_dont, /* complain_on_overflow */
1451 bfd_elf_generic_reloc, /* special_function */
1452 AARCH64_R_STR (TLSLD_LDST16_DTPREL_LO12_NC), /* name */
1453 FALSE, /* partial_inplace */
1454 0x1ffc00, /* src_mask */
1455 0x1ffc00, /* dst_mask */
1456 FALSE), /* pcrel_offset */
1457
1458 /* LD/ST32: bit[11:2] of byte offset to module TLS base address. */
1459 HOWTO64 (AARCH64_R (TLSLD_LDST32_DTPREL_LO12), /* type */
1460 2, /* rightshift */
1461 2, /* size (0 = byte, 1 = short, 2 = long) */
1462 10, /* bitsize */
1463 FALSE, /* pc_relative */
1464 10, /* bitpos */
1465 complain_overflow_unsigned, /* complain_on_overflow */
1466 bfd_elf_generic_reloc, /* special_function */
1467 AARCH64_R_STR (TLSLD_LDST32_DTPREL_LO12), /* name */
1468 FALSE, /* partial_inplace */
1469 0x3ffc00, /* src_mask */
1470 0x3ffc00, /* dst_mask */
1471 FALSE), /* pcrel_offset */
1472
1473 /* Same as BFD_RELOC_AARCH64_TLSLD_LDST32_DTPREL_LO12, but no overflow check. */
1474 HOWTO64 (AARCH64_R (TLSLD_LDST32_DTPREL_LO12_NC), /* type */
1475 2, /* rightshift */
1476 2, /* size (0 = byte, 1 = short, 2 = long) */
1477 10, /* bitsize */
1478 FALSE, /* pc_relative */
1479 10, /* bitpos */
1480 complain_overflow_dont, /* complain_on_overflow */
1481 bfd_elf_generic_reloc, /* special_function */
1482 AARCH64_R_STR (TLSLD_LDST32_DTPREL_LO12_NC), /* name */
1483 FALSE, /* partial_inplace */
1484 0xffc00, /* src_mask */
1485 0xffc00, /* dst_mask */
1486 FALSE), /* pcrel_offset */
1487
1488 /* LD/ST64: bit[11:3] of byte offset to module TLS base address. */
1489 HOWTO64 (AARCH64_R (TLSLD_LDST64_DTPREL_LO12), /* type */
1490 3, /* rightshift */
1491 2, /* size (0 = byte, 1 = short, 2 = long) */
1492 9, /* bitsize */
1493 FALSE, /* pc_relative */
1494 10, /* bitpos */
1495 complain_overflow_unsigned, /* complain_on_overflow */
1496 bfd_elf_generic_reloc, /* special_function */
1497 AARCH64_R_STR (TLSLD_LDST64_DTPREL_LO12), /* name */
1498 FALSE, /* partial_inplace */
1499 0x3ffc00, /* src_mask */
1500 0x3ffc00, /* dst_mask */
1501 FALSE), /* pcrel_offset */
1502
1503 /* Same as BFD_RELOC_AARCH64_TLSLD_LDST64_DTPREL_LO12, but no overflow check. */
1504 HOWTO64 (AARCH64_R (TLSLD_LDST64_DTPREL_LO12_NC), /* type */
1505 3, /* rightshift */
1506 2, /* size (0 = byte, 1 = short, 2 = long) */
1507 9, /* bitsize */
1508 FALSE, /* pc_relative */
1509 10, /* bitpos */
1510 complain_overflow_dont, /* complain_on_overflow */
1511 bfd_elf_generic_reloc, /* special_function */
1512 AARCH64_R_STR (TLSLD_LDST64_DTPREL_LO12_NC), /* name */
1513 FALSE, /* partial_inplace */
1514 0x7fc00, /* src_mask */
1515 0x7fc00, /* dst_mask */
1516 FALSE), /* pcrel_offset */
1517
1518 /* LD/ST8: bit[11:0] of byte offset to module TLS base address. */
1519 HOWTO64 (AARCH64_R (TLSLD_LDST8_DTPREL_LO12), /* type */
1520 0, /* rightshift */
1521 2, /* size (0 = byte, 1 = short, 2 = long) */
1522 12, /* bitsize */
1523 FALSE, /* pc_relative */
1524 10, /* bitpos */
1525 complain_overflow_unsigned, /* complain_on_overflow */
1526 bfd_elf_generic_reloc, /* special_function */
1527 AARCH64_R_STR (TLSLD_LDST8_DTPREL_LO12), /* name */
1528 FALSE, /* partial_inplace */
1529 0x3ffc00, /* src_mask */
1530 0x3ffc00, /* dst_mask */
1531 FALSE), /* pcrel_offset */
1532
1533 /* Same as BFD_RELOC_AARCH64_TLSLD_LDST8_DTPREL_LO12, but no overflow check. */
1534 HOWTO64 (AARCH64_R (TLSLD_LDST8_DTPREL_LO12_NC), /* type */
1535 0, /* rightshift */
1536 2, /* size (0 = byte, 1 = short, 2 = long) */
1537 12, /* bitsize */
1538 FALSE, /* pc_relative */
1539 10, /* bitpos */
1540 complain_overflow_dont, /* complain_on_overflow */
1541 bfd_elf_generic_reloc, /* special_function */
1542 AARCH64_R_STR (TLSLD_LDST8_DTPREL_LO12_NC), /* name */
1543 FALSE, /* partial_inplace */
1544 0x3ffc00, /* src_mask */
1545 0x3ffc00, /* dst_mask */
1546 FALSE), /* pcrel_offset */
1547
49df5539
JW		 1548 /* MOVZ: bit[15:0] of byte offset to module TLS base address. */
1549 HOWTO (AARCH64_R (TLSLD_MOVW_DTPREL_G0), /* type */
1550 0, /* rightshift */
1551 2, /* size (0 = byte, 1 = short, 2 = long) */
1552 16, /* bitsize */
1553 FALSE, /* pc_relative */
1554 0, /* bitpos */
1555 complain_overflow_unsigned, /* complain_on_overflow */
1556 bfd_elf_generic_reloc, /* special_function */
1557 AARCH64_R_STR (TLSLD_MOVW_DTPREL_G0), /* name */
1558 FALSE, /* partial_inplace */
1559 0xffff, /* src_mask */
1560 0xffff, /* dst_mask */
1561 FALSE), /* pcrel_offset */
1562
1563 /* No overflow check version of BFD_RELOC_AARCH64_TLSLD_MOVW_DTPREL_G0. */
1564 HOWTO (AARCH64_R (TLSLD_MOVW_DTPREL_G0_NC), /* type */
1565 0, /* rightshift */
1566 2, /* size (0 = byte, 1 = short, 2 = long) */
1567 16, /* bitsize */
1568 FALSE, /* pc_relative */
1569 0, /* bitpos */
1570 complain_overflow_dont, /* complain_on_overflow */
1571 bfd_elf_generic_reloc, /* special_function */
1572 AARCH64_R_STR (TLSLD_MOVW_DTPREL_G0_NC), /* name */
1573 FALSE, /* partial_inplace */
1574 0xffff, /* src_mask */
1575 0xffff, /* dst_mask */
1576 FALSE), /* pcrel_offset */
1577
1578 /* MOVZ: bit[31:16] of byte offset to module TLS base address. */
1579 HOWTO (AARCH64_R (TLSLD_MOVW_DTPREL_G1), /* type */
1580 16, /* rightshift */
1581 2, /* size (0 = byte, 1 = short, 2 = long) */
1582 16, /* bitsize */
1583 FALSE, /* pc_relative */
1584 0, /* bitpos */
1585 complain_overflow_unsigned, /* complain_on_overflow */
1586 bfd_elf_generic_reloc, /* special_function */
1587 AARCH64_R_STR (TLSLD_MOVW_DTPREL_G1), /* name */
1588 FALSE, /* partial_inplace */
1589 0xffff, /* src_mask */
1590 0xffff, /* dst_mask */
1591 FALSE), /* pcrel_offset */
1592
1593 /* No overflow check version of BFD_RELOC_AARCH64_TLSLD_MOVW_DTPREL_G1. */
1594 HOWTO64 (AARCH64_R (TLSLD_MOVW_DTPREL_G1_NC), /* type */
1595 16, /* rightshift */
1596 2, /* size (0 = byte, 1 = short, 2 = long) */
1597 16, /* bitsize */
1598 FALSE, /* pc_relative */
1599 0, /* bitpos */
1600 complain_overflow_dont, /* complain_on_overflow */
1601 bfd_elf_generic_reloc, /* special_function */
1602 AARCH64_R_STR (TLSLD_MOVW_DTPREL_G1_NC), /* name */
1603 FALSE, /* partial_inplace */
1604 0xffff, /* src_mask */
1605 0xffff, /* dst_mask */
1606 FALSE), /* pcrel_offset */
1607
1608 /* MOVZ: bit[47:32] of byte offset to module TLS base address. */
1609 HOWTO64 (AARCH64_R (TLSLD_MOVW_DTPREL_G2), /* type */
1610 32, /* rightshift */
1611 2, /* size (0 = byte, 1 = short, 2 = long) */
1612 16, /* bitsize */
1613 FALSE, /* pc_relative */
1614 0, /* bitpos */
1615 complain_overflow_unsigned, /* complain_on_overflow */
1616 bfd_elf_generic_reloc, /* special_function */
1617 AARCH64_R_STR (TLSLD_MOVW_DTPREL_G2), /* name */
1618 FALSE, /* partial_inplace */
1619 0xffff, /* src_mask */
1620 0xffff, /* dst_mask */
1621 FALSE), /* pcrel_offset */
1622
a6bb11b2 1623 HOWTO64 (AARCH64_R (TLSLE_MOVW_TPREL_G2), /* type */
bb3f9ed8 1624 32, /* rightshift */
a06ea964 1625 2, /* size (0 = byte, 1 = short, 2 = long) */
07875fbc 1626 16, /* bitsize */
a06ea964
NC		 1627 FALSE, /* pc_relative */
1628 0, /* bitpos */
0172429c 1629 complain_overflow_unsigned, /* complain_on_overflow */
a06ea964 1630 bfd_elf_generic_reloc, /* special_function */
a6bb11b2 1631 AARCH64_R_STR (TLSLE_MOVW_TPREL_G2), /* name */
a06ea964
NC		 1632 FALSE, /* partial_inplace */
1633 0xffff, /* src_mask */
1634 0xffff, /* dst_mask */
1635 FALSE), /* pcrel_offset */
1636
a6bb11b2 1637 HOWTO (AARCH64_R (TLSLE_MOVW_TPREL_G1), /* type */
bb3f9ed8 1638 16, /* rightshift */
a06ea964 1639 2, /* size (0 = byte, 1 = short, 2 = long) */
07875fbc 1640 16, /* bitsize */
a06ea964
NC		 1641 FALSE, /* pc_relative */
1642 0, /* bitpos */
1643 complain_overflow_dont, /* complain_on_overflow */
1644 bfd_elf_generic_reloc, /* special_function */
a6bb11b2 1645 AARCH64_R_STR (TLSLE_MOVW_TPREL_G1), /* name */
a06ea964
NC		 1646 FALSE, /* partial_inplace */
1647 0xffff, /* src_mask */
1648 0xffff, /* dst_mask */
1649 FALSE), /* pcrel_offset */
1650
a6bb11b2 1651 HOWTO64 (AARCH64_R (TLSLE_MOVW_TPREL_G1_NC), /* type */
bb3f9ed8 1652 16, /* rightshift */
a06ea964 1653 2, /* size (0 = byte, 1 = short, 2 = long) */
07875fbc 1654 16, /* bitsize */
a06ea964
NC		 1655 FALSE, /* pc_relative */
1656 0, /* bitpos */
1657 complain_overflow_dont, /* complain_on_overflow */
1658 bfd_elf_generic_reloc, /* special_function */
a6bb11b2 1659 AARCH64_R_STR (TLSLE_MOVW_TPREL_G1_NC), /* name */
a06ea964
NC		 1660 FALSE, /* partial_inplace */
1661 0xffff, /* src_mask */
1662 0xffff, /* dst_mask */
1663 FALSE), /* pcrel_offset */
1664
a6bb11b2 1665 HOWTO (AARCH64_R (TLSLE_MOVW_TPREL_G0), /* type */
a06ea964
NC		 1666 0, /* rightshift */
1667 2, /* size (0 = byte, 1 = short, 2 = long) */
07875fbc 1668 16, /* bitsize */
a06ea964
NC		 1669 FALSE, /* pc_relative */
1670 0, /* bitpos */
1671 complain_overflow_dont, /* complain_on_overflow */
1672 bfd_elf_generic_reloc, /* special_function */
a6bb11b2 1673 AARCH64_R_STR (TLSLE_MOVW_TPREL_G0), /* name */
a06ea964
NC		 1674 FALSE, /* partial_inplace */
1675 0xffff, /* src_mask */
1676 0xffff, /* dst_mask */
1677 FALSE), /* pcrel_offset */
1678
a6bb11b2 1679 HOWTO (AARCH64_R (TLSLE_MOVW_TPREL_G0_NC), /* type */
a06ea964
NC		 1680 0, /* rightshift */
1681 2, /* size (0 = byte, 1 = short, 2 = long) */
07875fbc 1682 16, /* bitsize */
a06ea964
NC		 1683 FALSE, /* pc_relative */
1684 0, /* bitpos */
1685 complain_overflow_dont, /* complain_on_overflow */
1686 bfd_elf_generic_reloc, /* special_function */
a6bb11b2 1687 AARCH64_R_STR (TLSLE_MOVW_TPREL_G0_NC), /* name */
a06ea964
NC		 1688 FALSE, /* partial_inplace */
1689 0xffff, /* src_mask */
1690 0xffff, /* dst_mask */
1691 FALSE), /* pcrel_offset */
1692
a6bb11b2 1693 HOWTO (AARCH64_R (TLSLE_ADD_TPREL_HI12), /* type */
bb3f9ed8 1694 12, /* rightshift */
a06ea964
NC		 1695 2, /* size (0 = byte, 1 = short, 2 = long) */
1696 12, /* bitsize */
1697 FALSE, /* pc_relative */
1698 0, /* bitpos */
bab91cce 1699 complain_overflow_unsigned, /* complain_on_overflow */
a06ea964 1700 bfd_elf_generic_reloc, /* special_function */
a6bb11b2 1701 AARCH64_R_STR (TLSLE_ADD_TPREL_HI12), /* name */
a06ea964
NC		 1702 FALSE, /* partial_inplace */
1703 0xfff, /* src_mask */
1704 0xfff, /* dst_mask */
1705 FALSE), /* pcrel_offset */
1706
a6bb11b2 1707 HOWTO (AARCH64_R (TLSLE_ADD_TPREL_LO12), /* type */
a06ea964
NC		 1708 0, /* rightshift */
1709 2, /* size (0 = byte, 1 = short, 2 = long) */
1710 12, /* bitsize */
1711 FALSE, /* pc_relative */
1712 0, /* bitpos */
36e6c140 1713 complain_overflow_unsigned, /* complain_on_overflow */
a06ea964 1714 bfd_elf_generic_reloc, /* special_function */
a6bb11b2 1715 AARCH64_R_STR (TLSLE_ADD_TPREL_LO12), /* name */
a06ea964
NC		 1716 FALSE, /* partial_inplace */
1717 0xfff, /* src_mask */
1718 0xfff, /* dst_mask */
1719 FALSE), /* pcrel_offset */
1720
a6bb11b2 1721 HOWTO (AARCH64_R (TLSLE_ADD_TPREL_LO12_NC), /* type */
a06ea964
NC		 1722 0, /* rightshift */
1723 2, /* size (0 = byte, 1 = short, 2 = long) */
1724 12, /* bitsize */
1725 FALSE, /* pc_relative */
1726 0, /* bitpos */
1727 complain_overflow_dont, /* complain_on_overflow */
1728 bfd_elf_generic_reloc, /* special_function */
a6bb11b2 1729 AARCH64_R_STR (TLSLE_ADD_TPREL_LO12_NC), /* name */
a06ea964
NC		 1730 FALSE, /* partial_inplace */
1731 0xfff, /* src_mask */
1732 0xfff, /* dst_mask */
1733 FALSE), /* pcrel_offset */
a06ea964 1734
84f1b9fb
RL		 1735 /* LD/ST16: bit[11:1] of byte offset to module TLS base address. */
1736 HOWTO (AARCH64_R (TLSLE_LDST16_TPREL_LO12), /* type */
1737 1, /* rightshift */
1738 2, /* size (0 = byte, 1 = short, 2 = long) */
1739 11, /* bitsize */
1740 FALSE, /* pc_relative */
1741 10, /* bitpos */
1742 complain_overflow_unsigned, /* complain_on_overflow */
1743 bfd_elf_generic_reloc, /* special_function */
1744 AARCH64_R_STR (TLSLE_LDST16_TPREL_LO12), /* name */
1745 FALSE, /* partial_inplace */
1746 0x1ffc00, /* src_mask */
1747 0x1ffc00, /* dst_mask */
1748 FALSE), /* pcrel_offset */
1749
1750 /* Same as BFD_RELOC_AARCH64_TLSLE_LDST16_TPREL_LO12, but no overflow check. */
1751 HOWTO (AARCH64_R (TLSLE_LDST16_TPREL_LO12_NC), /* type */
1752 1, /* rightshift */
1753 2, /* size (0 = byte, 1 = short, 2 = long) */
1754 11, /* bitsize */
1755 FALSE, /* pc_relative */
1756 10, /* bitpos */
1757 complain_overflow_dont, /* complain_on_overflow */
1758 bfd_elf_generic_reloc, /* special_function */
1759 AARCH64_R_STR (TLSLE_LDST16_TPREL_LO12_NC), /* name */
1760 FALSE, /* partial_inplace */
1761 0x1ffc00, /* src_mask */
1762 0x1ffc00, /* dst_mask */
1763 FALSE), /* pcrel_offset */
1764
1765 /* LD/ST32: bit[11:2] of byte offset to module TLS base address. */
1766 HOWTO (AARCH64_R (TLSLE_LDST32_TPREL_LO12), /* type */
1767 2, /* rightshift */
1768 2, /* size (0 = byte, 1 = short, 2 = long) */
1769 10, /* bitsize */
1770 FALSE, /* pc_relative */
1771 10, /* bitpos */
1772 complain_overflow_unsigned, /* complain_on_overflow */
1773 bfd_elf_generic_reloc, /* special_function */
1774 AARCH64_R_STR (TLSLE_LDST32_TPREL_LO12), /* name */
1775 FALSE, /* partial_inplace */
1776 0xffc00, /* src_mask */
1777 0xffc00, /* dst_mask */
1778 FALSE), /* pcrel_offset */
1779
1780 /* Same as BFD_RELOC_AARCH64_TLSLE_LDST32_TPREL_LO12, but no overflow check. */
1781 HOWTO (AARCH64_R (TLSLE_LDST32_TPREL_LO12_NC), /* type */
1782 2, /* rightshift */
1783 2, /* size (0 = byte, 1 = short, 2 = long) */
1784 10, /* bitsize */
1785 FALSE, /* pc_relative */
1786 10, /* bitpos */
1787 complain_overflow_dont, /* complain_on_overflow */
1788 bfd_elf_generic_reloc, /* special_function */
1789 AARCH64_R_STR (TLSLE_LDST32_TPREL_LO12_NC), /* name */
1790 FALSE, /* partial_inplace */
1791 0xffc00, /* src_mask */
1792 0xffc00, /* dst_mask */
1793 FALSE), /* pcrel_offset */
1794
1795 /* LD/ST64: bit[11:3] of byte offset to module TLS base address. */
1796 HOWTO (AARCH64_R (TLSLE_LDST64_TPREL_LO12), /* type */
1797 3, /* rightshift */
1798 2, /* size (0 = byte, 1 = short, 2 = long) */
1799 9, /* bitsize */
1800 FALSE, /* pc_relative */
1801 10, /* bitpos */
1802 complain_overflow_unsigned, /* complain_on_overflow */
1803 bfd_elf_generic_reloc, /* special_function */
1804 AARCH64_R_STR (TLSLE_LDST64_TPREL_LO12), /* name */
1805 FALSE, /* partial_inplace */
1806 0x7fc00, /* src_mask */
1807 0x7fc00, /* dst_mask */
1808 FALSE), /* pcrel_offset */
1809
1810 /* Same as BFD_RELOC_AARCH64_TLSLE_LDST64_TPREL_LO12, but no overflow check. */
1811 HOWTO (AARCH64_R (TLSLE_LDST64_TPREL_LO12_NC), /* type */
1812 3, /* rightshift */
1813 2, /* size (0 = byte, 1 = short, 2 = long) */
1814 9, /* bitsize */
1815 FALSE, /* pc_relative */
1816 10, /* bitpos */
1817 complain_overflow_dont, /* complain_on_overflow */
1818 bfd_elf_generic_reloc, /* special_function */
1819 AARCH64_R_STR (TLSLE_LDST64_TPREL_LO12_NC), /* name */
1820 FALSE, /* partial_inplace */
1821 0x7fc00, /* src_mask */
1822 0x7fc00, /* dst_mask */
1823 FALSE), /* pcrel_offset */
1824
1825 /* LD/ST8: bit[11:0] of byte offset to module TLS base address. */
1826 HOWTO (AARCH64_R (TLSLE_LDST8_TPREL_LO12), /* type */
1827 0, /* rightshift */
1828 2, /* size (0 = byte, 1 = short, 2 = long) */
1829 12, /* bitsize */
1830 FALSE, /* pc_relative */
1831 10, /* bitpos */
1832 complain_overflow_unsigned, /* complain_on_overflow */
1833 bfd_elf_generic_reloc, /* special_function */
1834 AARCH64_R_STR (TLSLE_LDST8_TPREL_LO12), /* name */
1835 FALSE, /* partial_inplace */
1836 0x3ffc00, /* src_mask */
1837 0x3ffc00, /* dst_mask */
1838 FALSE), /* pcrel_offset */
1839
1840 /* Same as BFD_RELOC_AARCH64_TLSLE_LDST8_TPREL_LO12, but no overflow check. */
1841 HOWTO (AARCH64_R (TLSLE_LDST8_TPREL_LO12_NC), /* type */
1842 0, /* rightshift */
1843 2, /* size (0 = byte, 1 = short, 2 = long) */
1844 12, /* bitsize */
1845 FALSE, /* pc_relative */
1846 10, /* bitpos */
1847 complain_overflow_dont, /* complain_on_overflow */
1848 bfd_elf_generic_reloc, /* special_function */
1849 AARCH64_R_STR (TLSLE_LDST8_TPREL_LO12_NC), /* name */
1850 FALSE, /* partial_inplace */
1851 0x3ffc00, /* src_mask */
1852 0x3ffc00, /* dst_mask */
1853 FALSE), /* pcrel_offset */
1854
a6bb11b2 1855 HOWTO (AARCH64_R (TLSDESC_LD_PREL19), /* type */
bb3f9ed8 1856 2, /* rightshift */
a06ea964 1857 2, /* size (0 = byte, 1 = short, 2 = long) */
1ada945d 1858 19, /* bitsize */
a06ea964
NC		 1859 TRUE, /* pc_relative */
1860 0, /* bitpos */
1861 complain_overflow_dont, /* complain_on_overflow */
1862 bfd_elf_generic_reloc, /* special_function */
a6bb11b2 1863 AARCH64_R_STR (TLSDESC_LD_PREL19), /* name */
a06ea964 1864 FALSE, /* partial_inplace */
1ada945d
MS		 1865 0x0ffffe0, /* src_mask */
1866 0x0ffffe0, /* dst_mask */
a06ea964
NC		 1867 TRUE), /* pcrel_offset */
1868
a6bb11b2 1869 HOWTO (AARCH64_R (TLSDESC_ADR_PREL21), /* type */
a06ea964
NC		 1870 0, /* rightshift */
1871 2, /* size (0 = byte, 1 = short, 2 = long) */
1872 21, /* bitsize */
1873 TRUE, /* pc_relative */
1874 0, /* bitpos */
1875 complain_overflow_dont, /* complain_on_overflow */
1876 bfd_elf_generic_reloc, /* special_function */
a6bb11b2 1877 AARCH64_R_STR (TLSDESC_ADR_PREL21), /* name */
a06ea964
NC		 1878 FALSE, /* partial_inplace */
1879 0x1fffff, /* src_mask */
1880 0x1fffff, /* dst_mask */
1881 TRUE), /* pcrel_offset */
1882
1883 /* Get to the page for the GOT entry for the symbol
1884 (G(S) - P) using an ADRP instruction. */
a6bb11b2 1885 HOWTO (AARCH64_R (TLSDESC_ADR_PAGE21), /* type */
a06ea964
NC		 1886 12, /* rightshift */
1887 2, /* size (0 = byte, 1 = short, 2 = long) */
1888 21, /* bitsize */
1889 TRUE, /* pc_relative */
1890 0, /* bitpos */
1891 complain_overflow_dont, /* complain_on_overflow */
1892 bfd_elf_generic_reloc, /* special_function */
a6bb11b2 1893 AARCH64_R_STR (TLSDESC_ADR_PAGE21), /* name */
a06ea964
NC		 1894 FALSE, /* partial_inplace */
1895 0x1fffff, /* src_mask */
1896 0x1fffff, /* dst_mask */
1897 TRUE), /* pcrel_offset */
1898
a6bb11b2 1899 /* LD64: GOT offset G(S) & 0xff8. */
f955cccf 1900 HOWTO64 (AARCH64_R (TLSDESC_LD64_LO12), /* type */
a06ea964
NC		 1901 3, /* rightshift */
1902 2, /* size (0 = byte, 1 = short, 2 = long) */
1903 12, /* bitsize */
1904 FALSE, /* pc_relative */
1905 0, /* bitpos */
1906 complain_overflow_dont, /* complain_on_overflow */
1907 bfd_elf_generic_reloc, /* special_function */
f955cccf 1908 AARCH64_R_STR (TLSDESC_LD64_LO12), /* name */
a06ea964 1909 FALSE, /* partial_inplace */
a6bb11b2
YZ		 1910 0xff8, /* src_mask */
1911 0xff8, /* dst_mask */
1912 FALSE), /* pcrel_offset */
1913
1914 /* LD32: GOT offset G(S) & 0xffc. */
1915 HOWTO32 (AARCH64_R (TLSDESC_LD32_LO12_NC), /* type */
1916 2, /* rightshift */
1917 2, /* size (0 = byte, 1 = short, 2 = long) */
1918 12, /* bitsize */
1919 FALSE, /* pc_relative */
1920 0, /* bitpos */
1921 complain_overflow_dont, /* complain_on_overflow */
1922 bfd_elf_generic_reloc, /* special_function */
1923 AARCH64_R_STR (TLSDESC_LD32_LO12_NC), /* name */
1924 FALSE, /* partial_inplace */
1925 0xffc, /* src_mask */
1926 0xffc, /* dst_mask */
a06ea964
NC		 1927 FALSE), /* pcrel_offset */
1928
1929 /* ADD: GOT offset G(S) & 0xfff. */
f955cccf 1930 HOWTO (AARCH64_R (TLSDESC_ADD_LO12), /* type */
a06ea964
NC		 1931 0, /* rightshift */
1932 2, /* size (0 = byte, 1 = short, 2 = long) */
1933 12, /* bitsize */
1934 FALSE, /* pc_relative */
1935 0, /* bitpos */
f955cccf 1936 complain_overflow_dont,/* complain_on_overflow */
a06ea964 1937 bfd_elf_generic_reloc, /* special_function */
f955cccf 1938 AARCH64_R_STR (TLSDESC_ADD_LO12), /* name */
a06ea964
NC		 1939 FALSE, /* partial_inplace */
1940 0xfff, /* src_mask */
1941 0xfff, /* dst_mask */
1942 FALSE), /* pcrel_offset */
1943
a6bb11b2 1944 HOWTO64 (AARCH64_R (TLSDESC_OFF_G1), /* type */
bb3f9ed8 1945 16, /* rightshift */
a06ea964
NC		 1946 2, /* size (0 = byte, 1 = short, 2 = long) */
1947 12, /* bitsize */
1948 FALSE, /* pc_relative */
1949 0, /* bitpos */
43a357f9 1950 complain_overflow_unsigned, /* complain_on_overflow */
a06ea964 1951 bfd_elf_generic_reloc, /* special_function */
a6bb11b2 1952 AARCH64_R_STR (TLSDESC_OFF_G1), /* name */
a06ea964
NC		 1953 FALSE, /* partial_inplace */
1954 0xffff, /* src_mask */
1955 0xffff, /* dst_mask */
1956 FALSE), /* pcrel_offset */
1957
a6bb11b2 1958 HOWTO64 (AARCH64_R (TLSDESC_OFF_G0_NC), /* type */
a06ea964
NC		 1959 0, /* rightshift */
1960 2, /* size (0 = byte, 1 = short, 2 = long) */
1961 12, /* bitsize */
1962 FALSE, /* pc_relative */
1963 0, /* bitpos */
1964 complain_overflow_dont, /* complain_on_overflow */
1965 bfd_elf_generic_reloc, /* special_function */
a6bb11b2 1966 AARCH64_R_STR (TLSDESC_OFF_G0_NC), /* name */
a06ea964
NC		 1967 FALSE, /* partial_inplace */
1968 0xffff, /* src_mask */
1969 0xffff, /* dst_mask */
1970 FALSE), /* pcrel_offset */
1971
a6bb11b2 1972 HOWTO64 (AARCH64_R (TLSDESC_LDR), /* type */
a06ea964
NC		 1973 0, /* rightshift */
1974 2, /* size (0 = byte, 1 = short, 2 = long) */
1975 12, /* bitsize */
1976 FALSE, /* pc_relative */
1977 0, /* bitpos */
1978 complain_overflow_dont, /* complain_on_overflow */
1979 bfd_elf_generic_reloc, /* special_function */
a6bb11b2 1980 AARCH64_R_STR (TLSDESC_LDR), /* name */
a06ea964
NC		 1981 FALSE, /* partial_inplace */
1982 0x0, /* src_mask */
1983 0x0, /* dst_mask */
1984 FALSE), /* pcrel_offset */
1985
a6bb11b2 1986 HOWTO64 (AARCH64_R (TLSDESC_ADD), /* type */
a06ea964
NC		 1987 0, /* rightshift */
1988 2, /* size (0 = byte, 1 = short, 2 = long) */
1989 12, /* bitsize */
1990 FALSE, /* pc_relative */
1991 0, /* bitpos */
1992 complain_overflow_dont, /* complain_on_overflow */
1993 bfd_elf_generic_reloc, /* special_function */
a6bb11b2 1994 AARCH64_R_STR (TLSDESC_ADD), /* name */
a06ea964
NC		 1995 FALSE, /* partial_inplace */
1996 0x0, /* src_mask */
1997 0x0, /* dst_mask */
1998 FALSE), /* pcrel_offset */
1999
a6bb11b2 2000 HOWTO (AARCH64_R (TLSDESC_CALL), /* type */
a06ea964
NC		 2001 0, /* rightshift */
2002 2, /* size (0 = byte, 1 = short, 2 = long) */
7366006f 2003 0, /* bitsize */
a06ea964
NC		 2004 FALSE, /* pc_relative */
2005 0, /* bitpos */
2006 complain_overflow_dont, /* complain_on_overflow */
2007 bfd_elf_generic_reloc, /* special_function */
a6bb11b2 2008 AARCH64_R_STR (TLSDESC_CALL), /* name */
a06ea964
NC		 2009 FALSE, /* partial_inplace */
2010 0x0, /* src_mask */
2011 0x0, /* dst_mask */
2012 FALSE), /* pcrel_offset */
a6bb11b2
YZ		 2013
2014 HOWTO (AARCH64_R (COPY), /* type */
2015 0, /* rightshift */
2016 2, /* size (0 = byte, 1 = short, 2 = long) */
2017 64, /* bitsize */
2018 FALSE, /* pc_relative */
2019 0, /* bitpos */
2020 complain_overflow_bitfield, /* complain_on_overflow */
2021 bfd_elf_generic_reloc, /* special_function */
2022 AARCH64_R_STR (COPY), /* name */
2023 TRUE, /* partial_inplace */
2024 0xffffffff, /* src_mask */
2025 0xffffffff, /* dst_mask */
2026 FALSE), /* pcrel_offset */
2027
2028 HOWTO (AARCH64_R (GLOB_DAT), /* type */
2029 0, /* rightshift */
2030 2, /* size (0 = byte, 1 = short, 2 = long) */
2031 64, /* bitsize */
2032 FALSE, /* pc_relative */
2033 0, /* bitpos */
2034 complain_overflow_bitfield, /* complain_on_overflow */
2035 bfd_elf_generic_reloc, /* special_function */
2036 AARCH64_R_STR (GLOB_DAT), /* name */
2037 TRUE, /* partial_inplace */
2038 0xffffffff, /* src_mask */
2039 0xffffffff, /* dst_mask */
2040 FALSE), /* pcrel_offset */
2041
2042 HOWTO (AARCH64_R (JUMP_SLOT), /* type */
2043 0, /* rightshift */
2044 2, /* size (0 = byte, 1 = short, 2 = long) */
2045 64, /* bitsize */
2046 FALSE, /* pc_relative */
2047 0, /* bitpos */
2048 complain_overflow_bitfield, /* complain_on_overflow */
2049 bfd_elf_generic_reloc, /* special_function */
2050 AARCH64_R_STR (JUMP_SLOT), /* name */
2051 TRUE, /* partial_inplace */
2052 0xffffffff, /* src_mask */
2053 0xffffffff, /* dst_mask */
2054 FALSE), /* pcrel_offset */
2055
2056 HOWTO (AARCH64_R (RELATIVE), /* type */
2057 0, /* rightshift */
2058 2, /* size (0 = byte, 1 = short, 2 = long) */
2059 64, /* bitsize */
2060 FALSE, /* pc_relative */
2061 0, /* bitpos */
2062 complain_overflow_bitfield, /* complain_on_overflow */
2063 bfd_elf_generic_reloc, /* special_function */
2064 AARCH64_R_STR (RELATIVE), /* name */
2065 TRUE, /* partial_inplace */
2066 ALL_ONES, /* src_mask */
2067 ALL_ONES, /* dst_mask */
2068 FALSE), /* pcrel_offset */
2069
2070 HOWTO (AARCH64_R (TLS_DTPMOD), /* type */
2071 0, /* rightshift */
2072 2, /* size (0 = byte, 1 = short, 2 = long) */
2073 64, /* bitsize */
2074 FALSE, /* pc_relative */
2075 0, /* bitpos */
2076 complain_overflow_dont, /* complain_on_overflow */
2077 bfd_elf_generic_reloc, /* special_function */
da0781dc
YZ		 2078#if ARCH_SIZE == 64
2079 AARCH64_R_STR (TLS_DTPMOD64), /* name */
2080#else
a6bb11b2 2081 AARCH64_R_STR (TLS_DTPMOD), /* name */
da0781dc 2082#endif
a6bb11b2
YZ		 2083 FALSE, /* partial_inplace */
2084 0, /* src_mask */
2085 ALL_ONES, /* dst_mask */
2086 FALSE), /* pc_reloffset */
2087
2088 HOWTO (AARCH64_R (TLS_DTPREL), /* type */
2089 0, /* rightshift */
2090 2, /* size (0 = byte, 1 = short, 2 = long) */
2091 64, /* bitsize */
2092 FALSE, /* pc_relative */
2093 0, /* bitpos */
2094 complain_overflow_dont, /* complain_on_overflow */
2095 bfd_elf_generic_reloc, /* special_function */
da0781dc
YZ		 2096#if ARCH_SIZE == 64
2097 AARCH64_R_STR (TLS_DTPREL64), /* name */
2098#else
a6bb11b2 2099 AARCH64_R_STR (TLS_DTPREL), /* name */
da0781dc 2100#endif
a6bb11b2
YZ		 2101 FALSE, /* partial_inplace */
2102 0, /* src_mask */
2103 ALL_ONES, /* dst_mask */
2104 FALSE), /* pcrel_offset */
2105
2106 HOWTO (AARCH64_R (TLS_TPREL), /* type */
2107 0, /* rightshift */
2108 2, /* size (0 = byte, 1 = short, 2 = long) */
2109 64, /* bitsize */
2110 FALSE, /* pc_relative */
2111 0, /* bitpos */
2112 complain_overflow_dont, /* complain_on_overflow */
2113 bfd_elf_generic_reloc, /* special_function */
da0781dc
YZ		 2114#if ARCH_SIZE == 64
2115 AARCH64_R_STR (TLS_TPREL64), /* name */
2116#else
a6bb11b2 2117 AARCH64_R_STR (TLS_TPREL), /* name */
da0781dc 2118#endif
a6bb11b2
YZ		 2119 FALSE, /* partial_inplace */
2120 0, /* src_mask */
2121 ALL_ONES, /* dst_mask */
2122 FALSE), /* pcrel_offset */
2123
2124 HOWTO (AARCH64_R (TLSDESC), /* type */
2125 0, /* rightshift */
2126 2, /* size (0 = byte, 1 = short, 2 = long) */
2127 64, /* bitsize */
2128 FALSE, /* pc_relative */
2129 0, /* bitpos */
2130 complain_overflow_dont, /* complain_on_overflow */
2131 bfd_elf_generic_reloc, /* special_function */
2132 AARCH64_R_STR (TLSDESC), /* name */
2133 FALSE, /* partial_inplace */
2134 0, /* src_mask */
2135 ALL_ONES, /* dst_mask */
2136 FALSE), /* pcrel_offset */
2137
2138 HOWTO (AARCH64_R (IRELATIVE), /* type */
2139 0, /* rightshift */
2140 2, /* size (0 = byte, 1 = short, 2 = long) */
2141 64, /* bitsize */
2142 FALSE, /* pc_relative */
2143 0, /* bitpos */
2144 complain_overflow_bitfield, /* complain_on_overflow */
2145 bfd_elf_generic_reloc, /* special_function */
2146 AARCH64_R_STR (IRELATIVE), /* name */
2147 FALSE, /* partial_inplace */
2148 0, /* src_mask */
2149 ALL_ONES, /* dst_mask */
2150 FALSE), /* pcrel_offset */
2151
2152 EMPTY_HOWTO (0),
a06ea964
NC		 2153};
2154
a6bb11b2
YZ		 2155static reloc_howto_type elfNN_aarch64_howto_none =
2156 HOWTO (R_AARCH64_NONE, /* type */
2157 0, /* rightshift */
6346d5ca 2158 3, /* size (0 = byte, 1 = short, 2 = long) */
a6bb11b2
YZ		 2159 0, /* bitsize */
2160 FALSE, /* pc_relative */
2161 0, /* bitpos */
2162 complain_overflow_dont,/* complain_on_overflow */
2163 bfd_elf_generic_reloc, /* special_function */
2164 "R_AARCH64_NONE", /* name */
2165 FALSE, /* partial_inplace */
2166 0, /* src_mask */
2167 0, /* dst_mask */
2168 FALSE); /* pcrel_offset */
2169
2170/* Given HOWTO, return the bfd internal relocation enumerator. */
2171
2172static bfd_reloc_code_real_type
2173elfNN_aarch64_bfd_reloc_from_howto (reloc_howto_type *howto)
2174{
2175 const int size
2176 = (int) ARRAY_SIZE (elfNN_aarch64_howto_table);
2177 const ptrdiff_t offset
2178 = howto - elfNN_aarch64_howto_table;
2179
2180 if (offset > 0 && offset < size - 1)
2181 return BFD_RELOC_AARCH64_RELOC_START + offset;
2182
2183 if (howto == &elfNN_aarch64_howto_none)
2184 return BFD_RELOC_AARCH64_NONE;
2185
2186 return BFD_RELOC_AARCH64_RELOC_START;
2187}
2188
2189/* Given R_TYPE, return the bfd internal relocation enumerator. */
2190
2191static bfd_reloc_code_real_type
0aa13fee 2192elfNN_aarch64_bfd_reloc_from_type (bfd *abfd, unsigned int r_type)
a6bb11b2
YZ		 2193{
2194 static bfd_boolean initialized_p = FALSE;
2195 /* Indexed by R_TYPE, values are offsets in the howto_table. */
2196 static unsigned int offsets[R_AARCH64_end];
2197
535b785f 2198 if (!initialized_p)
a6bb11b2
YZ		 2199 {
2200 unsigned int i;
2201
2202 for (i = 1; i < ARRAY_SIZE (elfNN_aarch64_howto_table) - 1; ++i)
2203 if (elfNN_aarch64_howto_table[i].type != 0)
2204 offsets[elfNN_aarch64_howto_table[i].type] = i;
2205
2206 initialized_p = TRUE;
2207 }
2208
2209 if (r_type == R_AARCH64_NONE || r_type == R_AARCH64_NULL)
2210 return BFD_RELOC_AARCH64_NONE;
2211
5860e3f8
NC		 2212 /* PR 17512: file: b371e70a. */
2213 if (r_type >= R_AARCH64_end)
2214 {
0aa13fee
AM		 2215 _bfd_error_handler (_("%pB: unsupported relocation type %#x"),
2216 abfd, r_type);
5860e3f8
NC		 2217 bfd_set_error (bfd_error_bad_value);
2218 return BFD_RELOC_AARCH64_NONE;
2219 }
2220
a6bb11b2
YZ		 2221 return BFD_RELOC_AARCH64_RELOC_START + offsets[r_type];
2222}
2223
2224struct elf_aarch64_reloc_map
2225{
2226 bfd_reloc_code_real_type from;
2227 bfd_reloc_code_real_type to;
2228};
2229
2230/* Map bfd generic reloc to AArch64-specific reloc. */
2231static const struct elf_aarch64_reloc_map elf_aarch64_reloc_map[] =
2232{
2233 {BFD_RELOC_NONE, BFD_RELOC_AARCH64_NONE},
2234
2235 /* Basic data relocations. */
2236 {BFD_RELOC_CTOR, BFD_RELOC_AARCH64_NN},
2237 {BFD_RELOC_64, BFD_RELOC_AARCH64_64},
2238 {BFD_RELOC_32, BFD_RELOC_AARCH64_32},
2239 {BFD_RELOC_16, BFD_RELOC_AARCH64_16},
2240 {BFD_RELOC_64_PCREL, BFD_RELOC_AARCH64_64_PCREL},
2241 {BFD_RELOC_32_PCREL, BFD_RELOC_AARCH64_32_PCREL},
2242 {BFD_RELOC_16_PCREL, BFD_RELOC_AARCH64_16_PCREL},
2243};
2244
2245/* Given the bfd internal relocation enumerator in CODE, return the
2246 corresponding howto entry. */
2247
2248static reloc_howto_type *
2249elfNN_aarch64_howto_from_bfd_reloc (bfd_reloc_code_real_type code)
2250{
2251 unsigned int i;
2252
2253 /* Convert bfd generic reloc to AArch64-specific reloc. */
2254 if (code < BFD_RELOC_AARCH64_RELOC_START
2255 || code > BFD_RELOC_AARCH64_RELOC_END)
2256 for (i = 0; i < ARRAY_SIZE (elf_aarch64_reloc_map); i++)
2257 if (elf_aarch64_reloc_map[i].from == code)
2258 {
2259 code = elf_aarch64_reloc_map[i].to;
2260 break;
2261 }
2262
2263 if (code > BFD_RELOC_AARCH64_RELOC_START
2264 && code < BFD_RELOC_AARCH64_RELOC_END)
2265 if (elfNN_aarch64_howto_table[code - BFD_RELOC_AARCH64_RELOC_START].type)
2266 return &elfNN_aarch64_howto_table[code - BFD_RELOC_AARCH64_RELOC_START];
2267
54757ed1
AP		 2268 if (code == BFD_RELOC_AARCH64_NONE)
2269 return &elfNN_aarch64_howto_none;
2270
a6bb11b2
YZ		 2271 return NULL;
2272}
2273
a06ea964 2274static reloc_howto_type *
0aa13fee 2275elfNN_aarch64_howto_from_type (bfd *abfd, unsigned int r_type)
a06ea964 2276{
a6bb11b2
YZ		 2277 bfd_reloc_code_real_type val;
2278 reloc_howto_type *howto;
2279
cec5225b
YZ		 2280#if ARCH_SIZE == 32
2281 if (r_type > 256)
2282 {
2283 bfd_set_error (bfd_error_bad_value);
2284 return NULL;
2285 }
2286#endif
2287
a6bb11b2
YZ		 2288 if (r_type == R_AARCH64_NONE)
2289 return &elfNN_aarch64_howto_none;
a06ea964 2290
0aa13fee 2291 val = elfNN_aarch64_bfd_reloc_from_type (abfd, r_type);
a6bb11b2 2292 howto = elfNN_aarch64_howto_from_bfd_reloc (val);
a06ea964 2293
a6bb11b2
YZ		 2294 if (howto != NULL)
2295 return howto;
a06ea964 2296
a06ea964
NC		 2297 bfd_set_error (bfd_error_bad_value);
2298 return NULL;
2299}
2300
f3185997 2301static bfd_boolean
0aa13fee 2302elfNN_aarch64_info_to_howto (bfd *abfd, arelent *bfd_reloc,
a06ea964
NC		 2303 Elf_Internal_Rela *elf_reloc)
2304{
2305 unsigned int r_type;
2306
cec5225b 2307 r_type = ELFNN_R_TYPE (elf_reloc->r_info);
0aa13fee 2308 bfd_reloc->howto = elfNN_aarch64_howto_from_type (abfd, r_type);
f3185997
NC		 2309
2310 if (bfd_reloc->howto == NULL)
2311 {
2312 /* xgettext:c-format */
2313 _bfd_error_handler (_("%pB: unsupported relocation type %#x"), abfd, r_type);
2314 return FALSE;
2315 }
2316 return TRUE;
a06ea964
NC		 2317}
2318
a06ea964 2319static reloc_howto_type *
cec5225b 2320elfNN_aarch64_reloc_type_lookup (bfd *abfd ATTRIBUTE_UNUSED,
a06ea964
NC		 2321 bfd_reloc_code_real_type code)
2322{
a6bb11b2 2323 reloc_howto_type *howto = elfNN_aarch64_howto_from_bfd_reloc (code);
a06ea964 2324
a6bb11b2
YZ		 2325 if (howto != NULL)
2326 return howto;
a06ea964
NC		 2327
2328 bfd_set_error (bfd_error_bad_value);
2329 return NULL;
2330}
2331
2332static reloc_howto_type *
cec5225b 2333elfNN_aarch64_reloc_name_lookup (bfd *abfd ATTRIBUTE_UNUSED,
a06ea964
NC		 2334 const char *r_name)
2335{
2336 unsigned int i;
2337
a6bb11b2
YZ		 2338 for (i = 1; i < ARRAY_SIZE (elfNN_aarch64_howto_table) - 1; ++i)
2339 if (elfNN_aarch64_howto_table[i].name != NULL
2340 && strcasecmp (elfNN_aarch64_howto_table[i].name, r_name) == 0)
2341 return &elfNN_aarch64_howto_table[i];
a06ea964
NC		 2342
2343 return NULL;
2344}
2345
07d6d2b8
AM		 2346#define TARGET_LITTLE_SYM aarch64_elfNN_le_vec
2347#define TARGET_LITTLE_NAME "elfNN-littleaarch64"
2348#define TARGET_BIG_SYM aarch64_elfNN_be_vec
2349#define TARGET_BIG_NAME "elfNN-bigaarch64"
a06ea964 2350
a06ea964
NC		 2351/* The linker script knows the section names for placement.
2352 The entry_names are used to do simple name mangling on the stubs.
2353 Given a function name, and its type, the stub can be found. The
2354 name can be changed. The only requirement is the %s be present. */
2355#define STUB_ENTRY_NAME "__%s_veneer"
2356
2357/* The name of the dynamic interpreter. This is put in the .interp
2358 section. */
2359#define ELF_DYNAMIC_INTERPRETER "/lib/ld.so.1"
2360
2361#define AARCH64_MAX_FWD_BRANCH_OFFSET \
2362 (((1 << 25) - 1) << 2)
2363#define AARCH64_MAX_BWD_BRANCH_OFFSET \
2364 (-((1 << 25) << 2))
2365
2366#define AARCH64_MAX_ADRP_IMM ((1 << 20) - 1)
2367#define AARCH64_MIN_ADRP_IMM (-(1 << 20))
2368
2369static int
2370aarch64_valid_for_adrp_p (bfd_vma value, bfd_vma place)
2371{
2372 bfd_signed_vma offset = (bfd_signed_vma) (PG (value) - PG (place)) >> 12;
2373 return offset <= AARCH64_MAX_ADRP_IMM && offset >= AARCH64_MIN_ADRP_IMM;
2374}
2375
2376static int
2377aarch64_valid_branch_p (bfd_vma value, bfd_vma place)
2378{
2379 bfd_signed_vma offset = (bfd_signed_vma) (value - place);
2380 return (offset <= AARCH64_MAX_FWD_BRANCH_OFFSET
2381 && offset >= AARCH64_MAX_BWD_BRANCH_OFFSET);
2382}
2383
2384static const uint32_t aarch64_adrp_branch_stub [] =
2385{
2386 0x90000010, /* adrp ip0, X */
2387 /* R_AARCH64_ADR_HI21_PCREL(X) */
2388 0x91000210, /* add ip0, ip0, :lo12:X */
2389 /* R_AARCH64_ADD_ABS_LO12_NC(X) */
2390 0xd61f0200, /* br ip0 */
2391};
2392
2393static const uint32_t aarch64_long_branch_stub[] =
2394{
cec5225b 2395#if ARCH_SIZE == 64
a06ea964 2396 0x58000090, /* ldr ip0, 1f */
cec5225b
YZ		 2397#else
2398 0x18000090, /* ldr wip0, 1f */
2399#endif
a06ea964
NC		 2400 0x10000011, /* adr ip1, #0 */
2401 0x8b110210, /* add ip0, ip0, ip1 */
2402 0xd61f0200, /* br ip0 */
cec5225b
YZ		 2403 0x00000000, /* 1: .xword or .word
2404 R_AARCH64_PRELNN(X) + 12
a06ea964
NC		 2405 */
2406 0x00000000,
2407};
2408
68fcca92
JW		 2409static const uint32_t aarch64_erratum_835769_stub[] =
2410{
2411 0x00000000, /* Placeholder for multiply accumulate. */
2412 0x14000000, /* b <label> */
2413};
2414
4106101c
MS		 2415static const uint32_t aarch64_erratum_843419_stub[] =
2416{
2417 0x00000000, /* Placeholder for LDR instruction. */
2418 0x14000000, /* b <label> */
2419};
2420
a06ea964
NC		 2421/* Section name for stubs is the associated section name plus this
2422 string. */
2423#define STUB_SUFFIX ".stub"
2424
cec5225b 2425enum elf_aarch64_stub_type
a06ea964
NC		 2426{
2427 aarch64_stub_none,
2428 aarch64_stub_adrp_branch,
2429 aarch64_stub_long_branch,
68fcca92 2430 aarch64_stub_erratum_835769_veneer,
4106101c 2431 aarch64_stub_erratum_843419_veneer,
a06ea964
NC		 2432};
2433
cec5225b 2434struct elf_aarch64_stub_hash_entry
a06ea964
NC		 2435{
2436 /* Base hash table entry structure. */
2437 struct bfd_hash_entry root;
2438
2439 /* The stub section. */
2440 asection *stub_sec;
2441
2442 /* Offset within stub_sec of the beginning of this stub. */
2443 bfd_vma stub_offset;
2444
2445 /* Given the symbol's value and its section we can determine its final
2446 value when building the stubs (so the stub knows where to jump). */
2447 bfd_vma target_value;
2448 asection *target_section;
2449
cec5225b 2450 enum elf_aarch64_stub_type stub_type;
a06ea964
NC		 2451
2452 /* The symbol table entry, if any, that this was derived from. */
cec5225b 2453 struct elf_aarch64_link_hash_entry *h;
a06ea964
NC		 2454
2455 /* Destination symbol type */
2456 unsigned char st_type;
2457
2458 /* Where this stub is being called from, or, in the case of combined
2459 stub sections, the first input section in the group. */
2460 asection *id_sec;
2461
2462 /* The name for the local symbol at the start of this stub. The
2463 stub name in the hash table has to be unique; this does not, so
2464 it can be friendlier. */
2465 char *output_name;
68fcca92
JW		 2466
2467 /* The instruction which caused this stub to be generated (only valid for
2468 erratum 835769 workaround stubs at present). */
2469 uint32_t veneered_insn;
4106101c
MS		 2470
2471 /* In an erratum 843419 workaround stub, the ADRP instruction offset. */
2472 bfd_vma adrp_offset;
a06ea964
NC		 2473};
2474
2475/* Used to build a map of a section. This is required for mixed-endian
2476 code/data. */
2477
cec5225b 2478typedef struct elf_elf_section_map
a06ea964
NC		 2479{
2480 bfd_vma vma;
2481 char type;
2482}
cec5225b 2483elf_aarch64_section_map;
a06ea964
NC		 2484
2485
2486typedef struct _aarch64_elf_section_data
2487{
2488 struct bfd_elf_section_data elf;
2489 unsigned int mapcount;
2490 unsigned int mapsize;
cec5225b 2491 elf_aarch64_section_map *map;
a06ea964
NC		 2492}
2493_aarch64_elf_section_data;
2494
cec5225b 2495#define elf_aarch64_section_data(sec) \
a06ea964
NC		 2496 ((_aarch64_elf_section_data *) elf_section_data (sec))
2497
4e8516b2
AP		 2498/* The size of the thread control block which is defined to be two pointers. */
2499#define TCB_SIZE (ARCH_SIZE/8)*2
a06ea964
NC		 2500
2501struct elf_aarch64_local_symbol
2502{
2503 unsigned int got_type;
2504 bfd_signed_vma got_refcount;
2505 bfd_vma got_offset;
2506
2507 /* Offset of the GOTPLT entry reserved for the TLS descriptor. The
2508 offset is from the end of the jump table and reserved entries
2509 within the PLTGOT.
2510
2511 The magic value (bfd_vma) -1 indicates that an offset has not be
2512 allocated. */
2513 bfd_vma tlsdesc_got_jump_table_offset;
2514};
2515
2516struct elf_aarch64_obj_tdata
2517{
2518 struct elf_obj_tdata root;
2519
2520 /* local symbol descriptors */
2521 struct elf_aarch64_local_symbol *locals;
2522
2523 /* Zero to warn when linking objects with incompatible enum sizes. */
2524 int no_enum_size_warning;
2525
2526 /* Zero to warn when linking objects with incompatible wchar_t sizes. */
2527 int no_wchar_size_warning;
cd702818
SD		 2528
2529 /* All GNU_PROPERTY_AARCH64_FEATURE_1_AND properties. */
2530 uint32_t gnu_and_prop;
37c18eed
SD		 2531
2532 /* Zero to warn when linking objects with incompatible
2533 GNU_PROPERTY_AARCH64_FEATURE_1_BTI. */
2534 int no_bti_warn;
2535
2536 /* PLT type based on security. */
2537 aarch64_plt_type plt_type;
a06ea964
NC		 2538};
2539
2540#define elf_aarch64_tdata(bfd) \
2541 ((struct elf_aarch64_obj_tdata *) (bfd)->tdata.any)
2542
cec5225b 2543#define elf_aarch64_locals(bfd) (elf_aarch64_tdata (bfd)->locals)
a06ea964
NC		 2544
2545#define is_aarch64_elf(bfd) \
2546 (bfd_get_flavour (bfd) == bfd_target_elf_flavour \
2547 && elf_tdata (bfd) != NULL \
2548 && elf_object_id (bfd) == AARCH64_ELF_DATA)
2549
2550static bfd_boolean
cec5225b 2551elfNN_aarch64_mkobject (bfd *abfd)
a06ea964
NC		 2552{
2553 return bfd_elf_allocate_object (abfd, sizeof (struct elf_aarch64_obj_tdata),
2554 AARCH64_ELF_DATA);
2555}
2556
cec5225b
YZ		 2557#define elf_aarch64_hash_entry(ent) \
2558 ((struct elf_aarch64_link_hash_entry *)(ent))
a06ea964
NC		 2559
2560#define GOT_UNKNOWN 0
2561#define GOT_NORMAL 1
2562#define GOT_TLS_GD 2
2563#define GOT_TLS_IE 4
2564#define GOT_TLSDESC_GD 8
2565
2566#define GOT_TLS_GD_ANY_P(type) ((type & GOT_TLS_GD) || (type & GOT_TLSDESC_GD))
2567
2568/* AArch64 ELF linker hash entry. */
cec5225b 2569struct elf_aarch64_link_hash_entry
a06ea964
NC		 2570{
2571 struct elf_link_hash_entry root;
2572
a06ea964
NC		 2573 /* Since PLT entries have variable size, we need to record the
2574 index into .got.plt instead of recomputing it from the PLT
2575 offset. */
2576 bfd_signed_vma plt_got_offset;
2577
2578 /* Bit mask representing the type of GOT entry(s) if any required by
2579 this symbol. */
2580 unsigned int got_type;
2581
2582 /* A pointer to the most recently used stub hash entry against this
2583 symbol. */
cec5225b 2584 struct elf_aarch64_stub_hash_entry *stub_cache;
a06ea964
NC		 2585
2586 /* Offset of the GOTPLT entry reserved for the TLS descriptor. The offset
2587 is from the end of the jump table and reserved entries within the PLTGOT.
2588
2589 The magic value (bfd_vma) -1 indicates that an offset has not
2590 be allocated. */
2591 bfd_vma tlsdesc_got_jump_table_offset;
2592};
2593
2594static unsigned int
cec5225b 2595elfNN_aarch64_symbol_got_type (struct elf_link_hash_entry *h,
a06ea964
NC		 2596 bfd *abfd,
2597 unsigned long r_symndx)
2598{
2599 if (h)
cec5225b 2600 return elf_aarch64_hash_entry (h)->got_type;
a06ea964 2601
cec5225b 2602 if (! elf_aarch64_locals (abfd))
a06ea964
NC		 2603 return GOT_UNKNOWN;
2604
cec5225b 2605 return elf_aarch64_locals (abfd)[r_symndx].got_type;
a06ea964
NC		 2606}
2607
a06ea964 2608/* Get the AArch64 elf linker hash table from a link_info structure. */
cec5225b
YZ		 2609#define elf_aarch64_hash_table(info) \
2610 ((struct elf_aarch64_link_hash_table *) ((info)->hash))
a06ea964
NC		 2611
2612#define aarch64_stub_hash_lookup(table, string, create, copy) \
cec5225b 2613 ((struct elf_aarch64_stub_hash_entry *) \
a06ea964
NC		 2614 bfd_hash_lookup ((table), (string), (create), (copy)))
2615
2616/* AArch64 ELF linker hash table. */
cec5225b 2617struct elf_aarch64_link_hash_table
a06ea964
NC		 2618{
2619 /* The main hash table. */
2620 struct elf_link_hash_table root;
2621
2622 /* Nonzero to force PIC branch veneers. */
2623 int pic_veneer;
2624
68fcca92
JW		 2625 /* Fix erratum 835769. */
2626 int fix_erratum_835769;
2627
4106101c 2628 /* Fix erratum 843419. */
739b5c9c 2629 erratum_84319_opts fix_erratum_843419;
4106101c 2630
1f56df9d
JW		 2631 /* Don't apply link-time values for dynamic relocations. */
2632 int no_apply_dynamic_relocs;
2633
a06ea964
NC		 2634 /* The number of bytes in the initial entry in the PLT. */
2635 bfd_size_type plt_header_size;
2636
37c18eed
SD		 2637 /* The bytes of the initial PLT entry. */
2638 const bfd_byte *plt0_entry;
2639
2640 /* The number of bytes in the subsequent PLT entries. */
a06ea964
NC		 2641 bfd_size_type plt_entry_size;
2642
37c18eed
SD		 2643 /* The bytes of the subsequent PLT entry. */
2644 const bfd_byte *plt_entry;
2645
a06ea964
NC		 2646 /* For convenience in allocate_dynrelocs. */
2647 bfd *obfd;
2648
2649 /* The amount of space used by the reserved portion of the sgotplt
2650 section, plus whatever space is used by the jump slots. */
2651 bfd_vma sgotplt_jump_table_size;
2652
2653 /* The stub hash table. */
2654 struct bfd_hash_table stub_hash_table;
2655
2656 /* Linker stub bfd. */
2657 bfd *stub_bfd;
2658
2659 /* Linker call-backs. */
2660 asection *(*add_stub_section) (const char *, asection *);
2661 void (*layout_sections_again) (void);
2662
2663 /* Array to keep track of which stub sections have been created, and
2664 information on stub grouping. */
2665 struct map_stub
2666 {
2667 /* This is the section to which stubs in the group will be
2668 attached. */
2669 asection *link_sec;
2670 /* The stub section. */
2671 asection *stub_sec;
2672 } *stub_group;
2673
cec5225b 2674 /* Assorted information used by elfNN_aarch64_size_stubs. */
a06ea964 2675 unsigned int bfd_count;
7292b3ac 2676 unsigned int top_index;
a06ea964
NC		 2677 asection **input_list;
2678
823710d5
SN		 2679 /* JUMP_SLOT relocs for variant PCS symbols may be present. */
2680 int variant_pcs;
2681
37c18eed
SD		 2682 /* The number of bytes in the PLT enty for the TLS descriptor. */
2683 bfd_size_type tlsdesc_plt_entry_size;
2684
1419bbe5
WN		 2685 /* Used by local STT_GNU_IFUNC symbols. */
2686 htab_t loc_hash_table;
2687 void * loc_hash_memory;
a06ea964
NC		 2688};
2689
a06ea964
NC		 2690/* Create an entry in an AArch64 ELF linker hash table. */
2691
2692static struct bfd_hash_entry *
cec5225b 2693elfNN_aarch64_link_hash_newfunc (struct bfd_hash_entry *entry,
a06ea964
NC		 2694 struct bfd_hash_table *table,
2695 const char *string)
2696{
cec5225b
YZ		 2697 struct elf_aarch64_link_hash_entry *ret =
2698 (struct elf_aarch64_link_hash_entry *) entry;
a06ea964
NC		 2699
2700 /* Allocate the structure if it has not already been allocated by a
2701 subclass. */
2702 if (ret == NULL)
2703 ret = bfd_hash_allocate (table,
cec5225b 2704 sizeof (struct elf_aarch64_link_hash_entry));
a06ea964
NC		 2705 if (ret == NULL)
2706 return (struct bfd_hash_entry *) ret;
2707
2708 /* Call the allocation method of the superclass. */
cec5225b 2709 ret = ((struct elf_aarch64_link_hash_entry *)
a06ea964
NC		 2710 _bfd_elf_link_hash_newfunc ((struct bfd_hash_entry *) ret,
2711 table, string));
2712 if (ret != NULL)
2713 {
a06ea964
NC		 2714 ret->got_type = GOT_UNKNOWN;
2715 ret->plt_got_offset = (bfd_vma) - 1;
2716 ret->stub_cache = NULL;
2717 ret->tlsdesc_got_jump_table_offset = (bfd_vma) - 1;
2718 }
2719
2720 return (struct bfd_hash_entry *) ret;
2721}
2722
2723/* Initialize an entry in the stub hash table. */
2724
2725static struct bfd_hash_entry *
2726stub_hash_newfunc (struct bfd_hash_entry *entry,
2727 struct bfd_hash_table *table, const char *string)
2728{
2729 /* Allocate the structure if it has not already been allocated by a
2730 subclass. */
2731 if (entry == NULL)
2732 {
2733 entry = bfd_hash_allocate (table,
2734 sizeof (struct
cec5225b 2735 elf_aarch64_stub_hash_entry));
a06ea964
NC		 2736 if (entry == NULL)
2737 return entry;
2738 }
2739
2740 /* Call the allocation method of the superclass. */
2741 entry = bfd_hash_newfunc (entry, table, string);
2742 if (entry != NULL)
2743 {
cec5225b 2744 struct elf_aarch64_stub_hash_entry *eh;
a06ea964
NC		 2745
2746 /* Initialize the local fields. */
cec5225b 2747 eh = (struct elf_aarch64_stub_hash_entry *) entry;
4106101c 2748 eh->adrp_offset = 0;
a06ea964
NC		 2749 eh->stub_sec = NULL;
2750 eh->stub_offset = 0;
2751 eh->target_value = 0;
2752 eh->target_section = NULL;
2753 eh->stub_type = aarch64_stub_none;
2754 eh->h = NULL;
2755 eh->id_sec = NULL;
2756 }
2757
2758 return entry;
2759}
2760
1419bbe5
WN		 2761/* Compute a hash of a local hash entry. We use elf_link_hash_entry
2762 for local symbol so that we can handle local STT_GNU_IFUNC symbols
2763 as global symbol. We reuse indx and dynstr_index for local symbol
2764 hash since they aren't used by global symbols in this backend. */
2765
2766static hashval_t
2767elfNN_aarch64_local_htab_hash (const void *ptr)
2768{
2769 struct elf_link_hash_entry *h
2770 = (struct elf_link_hash_entry *) ptr;
2771 return ELF_LOCAL_SYMBOL_HASH (h->indx, h->dynstr_index);
2772}
2773
2774/* Compare local hash entries. */
2775
2776static int
2777elfNN_aarch64_local_htab_eq (const void *ptr1, const void *ptr2)
2778{
2779 struct elf_link_hash_entry *h1
2780 = (struct elf_link_hash_entry *) ptr1;
2781 struct elf_link_hash_entry *h2
2782 = (struct elf_link_hash_entry *) ptr2;
2783
2784 return h1->indx == h2->indx && h1->dynstr_index == h2->dynstr_index;
2785}
2786
2787/* Find and/or create a hash entry for local symbol. */
2788
2789static struct elf_link_hash_entry *
2790elfNN_aarch64_get_local_sym_hash (struct elf_aarch64_link_hash_table *htab,
2791 bfd *abfd, const Elf_Internal_Rela *rel,
2792 bfd_boolean create)
2793{
2794 struct elf_aarch64_link_hash_entry e, *ret;
2795 asection *sec = abfd->sections;
2796 hashval_t h = ELF_LOCAL_SYMBOL_HASH (sec->id,
2797 ELFNN_R_SYM (rel->r_info));
2798 void **slot;
2799
2800 e.root.indx = sec->id;
2801 e.root.dynstr_index = ELFNN_R_SYM (rel->r_info);
2802 slot = htab_find_slot_with_hash (htab->loc_hash_table, &e, h,
2803 create ? INSERT : NO_INSERT);
2804
2805 if (!slot)
2806 return NULL;
2807
2808 if (*slot)
2809 {
2810 ret = (struct elf_aarch64_link_hash_entry *) *slot;
2811 return &ret->root;
2812 }
2813
2814 ret = (struct elf_aarch64_link_hash_entry *)
2815 objalloc_alloc ((struct objalloc *) htab->loc_hash_memory,
2816 sizeof (struct elf_aarch64_link_hash_entry));
2817 if (ret)
2818 {
2819 memset (ret, 0, sizeof (*ret));
2820 ret->root.indx = sec->id;
2821 ret->root.dynstr_index = ELFNN_R_SYM (rel->r_info);
2822 ret->root.dynindx = -1;
2823 *slot = ret;
2824 }
2825 return &ret->root;
2826}
a06ea964
NC		 2827
2828/* Copy the extra info we tack onto an elf_link_hash_entry. */
2829
2830static void
cec5225b 2831elfNN_aarch64_copy_indirect_symbol (struct bfd_link_info *info,
a06ea964
NC		 2832 struct elf_link_hash_entry *dir,
2833 struct elf_link_hash_entry *ind)
2834{
cec5225b 2835 struct elf_aarch64_link_hash_entry *edir, *eind;
a06ea964 2836
cec5225b
YZ		 2837 edir = (struct elf_aarch64_link_hash_entry *) dir;
2838 eind = (struct elf_aarch64_link_hash_entry *) ind;
a06ea964 2839
a06ea964
NC		 2840 if (ind->root.type == bfd_link_hash_indirect)
2841 {
2842 /* Copy over PLT info. */
2843 if (dir->got.refcount <= 0)
2844 {
2845 edir->got_type = eind->got_type;
2846 eind->got_type = GOT_UNKNOWN;
2847 }
2848 }
2849
2850 _bfd_elf_link_hash_copy_indirect (info, dir, ind);
2851}
2852
823710d5
SN		 2853/* Merge non-visibility st_other attributes. */
2854
2855static void
2856elfNN_aarch64_merge_symbol_attribute (struct elf_link_hash_entry *h,
5160d0f3 2857 unsigned int st_other,
823710d5
SN		 2858 bfd_boolean definition ATTRIBUTE_UNUSED,
2859 bfd_boolean dynamic ATTRIBUTE_UNUSED)
2860{
5160d0f3 2861 unsigned int isym_sto = st_other & ~ELF_ST_VISIBILITY (-1);
823710d5
SN		 2862 unsigned int h_sto = h->other & ~ELF_ST_VISIBILITY (-1);
2863
2864 if (isym_sto == h_sto)
2865 return;
2866
2867 if (isym_sto & ~STO_AARCH64_VARIANT_PCS)
2868 /* Not fatal, this callback cannot fail. */
2869 _bfd_error_handler (_("unknown attribute for symbol `%s': 0x%02x"),
2870 h->root.root.string, isym_sto);
2871
2872 /* Note: Ideally we would warn about any attribute mismatch, but
2873 this api does not allow that without substantial changes. */
2874 if (isym_sto & STO_AARCH64_VARIANT_PCS)
2875 h->other |= STO_AARCH64_VARIANT_PCS;
2876}
2877
68faa637
AM		 2878/* Destroy an AArch64 elf linker hash table. */
2879
2880static void
d495ab0d 2881elfNN_aarch64_link_hash_table_free (bfd *obfd)
68faa637
AM		 2882{
2883 struct elf_aarch64_link_hash_table *ret
d495ab0d 2884 = (struct elf_aarch64_link_hash_table *) obfd->link.hash;
68faa637
AM		 2885
2886 if (ret->loc_hash_table)
2887 htab_delete (ret->loc_hash_table);
2888 if (ret->loc_hash_memory)
2889 objalloc_free ((struct objalloc *) ret->loc_hash_memory);
2890
2891 bfd_hash_table_free (&ret->stub_hash_table);
d495ab0d 2892 _bfd_elf_link_hash_table_free (obfd);
68faa637
AM		 2893}
2894
a06ea964
NC		 2895/* Create an AArch64 elf linker hash table. */
2896
2897static struct bfd_link_hash_table *
cec5225b 2898elfNN_aarch64_link_hash_table_create (bfd *abfd)
a06ea964 2899{
cec5225b 2900 struct elf_aarch64_link_hash_table *ret;
986f0783 2901 size_t amt = sizeof (struct elf_aarch64_link_hash_table);
a06ea964 2902
7bf52ea2 2903 ret = bfd_zmalloc (amt);
a06ea964
NC		 2904 if (ret == NULL)
2905 return NULL;
2906
2907 if (!_bfd_elf_link_hash_table_init
cec5225b
YZ		 2908 (&ret->root, abfd, elfNN_aarch64_link_hash_newfunc,
2909 sizeof (struct elf_aarch64_link_hash_entry), AARCH64_ELF_DATA))
a06ea964
NC		 2910 {
2911 free (ret);
2912 return NULL;
2913 }
2914
a06ea964 2915 ret->plt_header_size = PLT_ENTRY_SIZE;
37c18eed 2916 ret->plt0_entry = elfNN_aarch64_small_plt0_entry;
a06ea964 2917 ret->plt_entry_size = PLT_SMALL_ENTRY_SIZE;
37c18eed
SD		 2918 ret->plt_entry = elfNN_aarch64_small_plt_entry;
2919 ret->tlsdesc_plt_entry_size = PLT_TLSDESC_ENTRY_SIZE;
a06ea964 2920 ret->obfd = abfd;
9bcc30e4 2921 ret->root.tlsdesc_got = (bfd_vma) - 1;
a06ea964
NC		 2922
2923 if (!bfd_hash_table_init (&ret->stub_hash_table, stub_hash_newfunc,
cec5225b 2924 sizeof (struct elf_aarch64_stub_hash_entry)))
a06ea964 2925 {
d495ab0d 2926 _bfd_elf_link_hash_table_free (abfd);
a06ea964
NC		 2927 return NULL;
2928 }
2929
1419bbe5
WN		 2930 ret->loc_hash_table = htab_try_create (1024,
2931 elfNN_aarch64_local_htab_hash,
2932 elfNN_aarch64_local_htab_eq,
2933 NULL);
2934 ret->loc_hash_memory = objalloc_create ();
2935 if (!ret->loc_hash_table || !ret->loc_hash_memory)
2936 {
d495ab0d 2937 elfNN_aarch64_link_hash_table_free (abfd);
1419bbe5
WN		 2938 return NULL;
2939 }
d495ab0d 2940 ret->root.root.hash_table_free = elfNN_aarch64_link_hash_table_free;
1419bbe5 2941
a06ea964
NC		 2942 return &ret->root.root;
2943}
2944
1d75a8e2
NC		 2945/* Perform relocation R_TYPE. Returns TRUE upon success, FALSE otherwise. */
2946
a06ea964
NC		 2947static bfd_boolean
2948aarch64_relocate (unsigned int r_type, bfd *input_bfd, asection *input_section,
2949 bfd_vma offset, bfd_vma value)
2950{
2951 reloc_howto_type *howto;
2952 bfd_vma place;
2953
0aa13fee 2954 howto = elfNN_aarch64_howto_from_type (input_bfd, r_type);
a06ea964
NC		 2955 place = (input_section->output_section->vma + input_section->output_offset
2956 + offset);
caed7120 2957
0aa13fee 2958 r_type = elfNN_aarch64_bfd_reloc_from_type (input_bfd, r_type);
652afeef
TC		 2959 value = _bfd_aarch64_elf_resolve_relocation (input_bfd, r_type, place,
2960 value, 0, FALSE);
caed7120
YZ		 2961 return _bfd_aarch64_elf_put_addend (input_bfd,
2962 input_section->contents + offset, r_type,
1d75a8e2 2963 howto, value) == bfd_reloc_ok;
a06ea964
NC		 2964}
2965
cec5225b 2966static enum elf_aarch64_stub_type
a06ea964
NC		 2967aarch64_select_branch_stub (bfd_vma value, bfd_vma place)
2968{
2969 if (aarch64_valid_for_adrp_p (value, place))
2970 return aarch64_stub_adrp_branch;
2971 return aarch64_stub_long_branch;
2972}
2973
2974/* Determine the type of stub needed, if any, for a call. */
2975
cec5225b 2976static enum elf_aarch64_stub_type
9a228467 2977aarch64_type_of_stub (asection *input_sec,
a06ea964 2978 const Elf_Internal_Rela *rel,
f678ded7 2979 asection *sym_sec,
a06ea964 2980 unsigned char st_type,
a06ea964
NC		 2981 bfd_vma destination)
2982{
2983 bfd_vma location;
2984 bfd_signed_vma branch_offset;
2985 unsigned int r_type;
cec5225b 2986 enum elf_aarch64_stub_type stub_type = aarch64_stub_none;
a06ea964 2987
f678ded7 2988 if (st_type != STT_FUNC
2f340668 2989 && (sym_sec == input_sec))
a06ea964
NC		 2990 return stub_type;
2991
a06ea964
NC		 2992 /* Determine where the call point is. */
2993 location = (input_sec->output_offset
2994 + input_sec->output_section->vma + rel->r_offset);
2995
2996 branch_offset = (bfd_signed_vma) (destination - location);
2997
cec5225b 2998 r_type = ELFNN_R_TYPE (rel->r_info);
a06ea964
NC		 2999
3000 /* We don't want to redirect any old unconditional jump in this way,
3001 only one which is being used for a sibcall, where it is
3002 acceptable for the IP0 and IP1 registers to be clobbered. */
a6bb11b2 3003 if ((r_type == AARCH64_R (CALL26) || r_type == AARCH64_R (JUMP26))
a06ea964
NC		 3004 && (branch_offset > AARCH64_MAX_FWD_BRANCH_OFFSET
3005 || branch_offset < AARCH64_MAX_BWD_BRANCH_OFFSET))
3006 {
3007 stub_type = aarch64_stub_long_branch;
3008 }
3009
3010 return stub_type;
3011}
3012
3013/* Build a name for an entry in the stub hash table. */
3014
3015static char *
cec5225b 3016elfNN_aarch64_stub_name (const asection *input_section,
a06ea964 3017 const asection *sym_sec,
cec5225b 3018 const struct elf_aarch64_link_hash_entry *hash,
a06ea964
NC		 3019 const Elf_Internal_Rela *rel)
3020{
3021 char *stub_name;
3022 bfd_size_type len;
3023
3024 if (hash)
3025 {
3026 len = 8 + 1 + strlen (hash->root.root.root.string) + 1 + 16 + 1;
3027 stub_name = bfd_malloc (len);
3028 if (stub_name != NULL)
3029 snprintf (stub_name, len, "%08x_%s+%" BFD_VMA_FMT "x",
3030 (unsigned int) input_section->id,
3031 hash->root.root.root.string,
3032 rel->r_addend);
3033 }
3034 else
3035 {
3036 len = 8 + 1 + 8 + 1 + 8 + 1 + 16 + 1;
3037 stub_name = bfd_malloc (len);
3038 if (stub_name != NULL)
3039 snprintf (stub_name, len, "%08x_%x:%x+%" BFD_VMA_FMT "x",
3040 (unsigned int) input_section->id,
3041 (unsigned int) sym_sec->id,
cec5225b 3042 (unsigned int) ELFNN_R_SYM (rel->r_info),
a06ea964
NC		 3043 rel->r_addend);
3044 }
3045
3046 return stub_name;
3047}
3048
7f784814
JW		 3049/* Return TRUE if symbol H should be hashed in the `.gnu.hash' section. For
3050 executable PLT slots where the executable never takes the address of those
3051 functions, the function symbols are not added to the hash table. */
3052
3053static bfd_boolean
3054elf_aarch64_hash_symbol (struct elf_link_hash_entry *h)
3055{
3056 if (h->plt.offset != (bfd_vma) -1
3057 && !h->def_regular
3058 && !h->pointer_equality_needed)
3059 return FALSE;
3060
3061 return _bfd_elf_hash_symbol (h);
3062}
3063
3064
a06ea964
NC		 3065/* Look up an entry in the stub hash. Stub entries are cached because
3066 creating the stub name takes a bit of time. */
3067
cec5225b
YZ		 3068static struct elf_aarch64_stub_hash_entry *
3069elfNN_aarch64_get_stub_entry (const asection *input_section,
a06ea964
NC		 3070 const asection *sym_sec,
3071 struct elf_link_hash_entry *hash,
3072 const Elf_Internal_Rela *rel,
cec5225b 3073 struct elf_aarch64_link_hash_table *htab)
a06ea964 3074{
cec5225b
YZ		 3075 struct elf_aarch64_stub_hash_entry *stub_entry;
3076 struct elf_aarch64_link_hash_entry *h =
3077 (struct elf_aarch64_link_hash_entry *) hash;
a06ea964
NC		 3078 const asection *id_sec;
3079
3080 if ((input_section->flags & SEC_CODE) == 0)
3081 return NULL;
3082
3083 /* If this input section is part of a group of sections sharing one
3084 stub section, then use the id of the first section in the group.
3085 Stub names need to include a section id, as there may well be
3086 more than one stub used to reach say, printf, and we need to
3087 distinguish between them. */
3088 id_sec = htab->stub_group[input_section->id].link_sec;
3089
3090 if (h != NULL && h->stub_cache != NULL
3091 && h->stub_cache->h == h && h->stub_cache->id_sec == id_sec)
3092 {
3093 stub_entry = h->stub_cache;
3094 }
3095 else
3096 {
3097 char *stub_name;
3098
cec5225b 3099 stub_name = elfNN_aarch64_stub_name (id_sec, sym_sec, h, rel);
a06ea964
NC		 3100 if (stub_name == NULL)
3101 return NULL;
3102
3103 stub_entry = aarch64_stub_hash_lookup (&htab->stub_hash_table,
3104 stub_name, FALSE, FALSE);
3105 if (h != NULL)
3106 h->stub_cache = stub_entry;
3107
3108 free (stub_name);
3109 }
3110
3111 return stub_entry;
3112}
3113
a06ea964 3114
66585675
MS		 3115/* Create a stub section. */
3116
3117static asection *
3118_bfd_aarch64_create_stub_section (asection *section,
3119 struct elf_aarch64_link_hash_table *htab)
3120{
3121 size_t namelen;
3122 bfd_size_type len;
3123 char *s_name;
3124
3125 namelen = strlen (section->name);
3126 len = namelen + sizeof (STUB_SUFFIX);
3127 s_name = bfd_alloc (htab->stub_bfd, len);
3128 if (s_name == NULL)
3129 return NULL;
3130
3131 memcpy (s_name, section->name, namelen);
3132 memcpy (s_name + namelen, STUB_SUFFIX, sizeof (STUB_SUFFIX));
3133 return (*htab->add_stub_section) (s_name, section);
3134}
3135
3136
fc6d53be
MS		 3137/* Find or create a stub section for a link section.
3138
3139 Fix or create the stub section used to collect stubs attached to
3140 the specified link section. */
3141
3142static asection *
3143_bfd_aarch64_get_stub_for_link_section (asection *link_section,
3144 struct elf_aarch64_link_hash_table *htab)
3145{
3146 if (htab->stub_group[link_section->id].stub_sec == NULL)
3147 htab->stub_group[link_section->id].stub_sec
3148 = _bfd_aarch64_create_stub_section (link_section, htab);
3149 return htab->stub_group[link_section->id].stub_sec;
3150}
3151
3152
ef857521
MS		 3153/* Find or create a stub section in the stub group for an input
3154 section. */
3155
3156static asection *
3157_bfd_aarch64_create_or_find_stub_sec (asection *section,
3158 struct elf_aarch64_link_hash_table *htab)
a06ea964 3159{
fc6d53be
MS		 3160 asection *link_sec = htab->stub_group[section->id].link_sec;
3161 return _bfd_aarch64_get_stub_for_link_section (link_sec, htab);
ef857521
MS		 3162}
3163
3164
3165/* Add a new stub entry in the stub group associated with an input
3166 section to the stub hash. Not all fields of the new stub entry are
3167 initialised. */
3168
3169static struct elf_aarch64_stub_hash_entry *
3170_bfd_aarch64_add_stub_entry_in_group (const char *stub_name,
3171 asection *section,
3172 struct elf_aarch64_link_hash_table *htab)
3173{
3174 asection *link_sec;
3175 asection *stub_sec;
3176 struct elf_aarch64_stub_hash_entry *stub_entry;
3177
3178 link_sec = htab->stub_group[section->id].link_sec;
3179 stub_sec = _bfd_aarch64_create_or_find_stub_sec (section, htab);
3180
a06ea964
NC		 3181 /* Enter this entry into the linker stub hash table. */
3182 stub_entry = aarch64_stub_hash_lookup (&htab->stub_hash_table, stub_name,
3183 TRUE, FALSE);
3184 if (stub_entry == NULL)
3185 {
695344c0 3186 /* xgettext:c-format */
871b3ab2 3187 _bfd_error_handler (_("%pB: cannot create stub entry %s"),
4eca0228 3188 section->owner, stub_name);
a06ea964
NC		 3189 return NULL;
3190 }
3191
3192 stub_entry->stub_sec = stub_sec;
3193 stub_entry->stub_offset = 0;
3194 stub_entry->id_sec = link_sec;
3195
3196 return stub_entry;
3197}
3198
4106101c
MS		 3199/* Add a new stub entry in the final stub section to the stub hash.
3200 Not all fields of the new stub entry are initialised. */
3201
3202static struct elf_aarch64_stub_hash_entry *
3203_bfd_aarch64_add_stub_entry_after (const char *stub_name,
3204 asection *link_section,
3205 struct elf_aarch64_link_hash_table *htab)
3206{
3207 asection *stub_sec;
3208 struct elf_aarch64_stub_hash_entry *stub_entry;
3209
739b5c9c
TC		 3210 stub_sec = NULL;
3211 /* Only create the actual stub if we will end up needing it. */
3212 if (htab->fix_erratum_843419 & ERRAT_ADRP)
3213 stub_sec = _bfd_aarch64_get_stub_for_link_section (link_section, htab);
4106101c
MS		 3214 stub_entry = aarch64_stub_hash_lookup (&htab->stub_hash_table, stub_name,
3215 TRUE, FALSE);
3216 if (stub_entry == NULL)
3217 {
4eca0228 3218 _bfd_error_handler (_("cannot create stub entry %s"), stub_name);
4106101c
MS		 3219 return NULL;
3220 }
3221
3222 stub_entry->stub_sec = stub_sec;
3223 stub_entry->stub_offset = 0;
3224 stub_entry->id_sec = link_section;
3225
3226 return stub_entry;
3227}
3228
3229
a06ea964
NC		 3230static bfd_boolean
3231aarch64_build_one_stub (struct bfd_hash_entry *gen_entry,
abf874aa 3232 void *in_arg)
a06ea964 3233{
cec5225b 3234 struct elf_aarch64_stub_hash_entry *stub_entry;
a06ea964
NC		 3235 asection *stub_sec;
3236 bfd *stub_bfd;
3237 bfd_byte *loc;
3238 bfd_vma sym_value;
68fcca92
JW		 3239 bfd_vma veneered_insn_loc;
3240 bfd_vma veneer_entry_loc;
3241 bfd_signed_vma branch_offset = 0;
a06ea964
NC		 3242 unsigned int template_size;
3243 const uint32_t *template;
3244 unsigned int i;
abf874aa 3245 struct bfd_link_info *info;
a06ea964
NC		 3246
3247 /* Massage our args to the form they really have. */
cec5225b 3248 stub_entry = (struct elf_aarch64_stub_hash_entry *) gen_entry;
a06ea964 3249
abf874aa
CL		 3250 info = (struct bfd_link_info *) in_arg;
3251
3252 /* Fail if the target section could not be assigned to an output
3253 section. The user should fix his linker script. */
3254 if (stub_entry->target_section->output_section == NULL
3255 && info->non_contiguous_regions)
53215f21
CL		 3256 info->callbacks->einfo (_("%F%P: Could not assign '%pA' to an output section. "
3257 "Retry without "
3258 "--enable-non-contiguous-regions.\n"),
3259 stub_entry->target_section);
abf874aa 3260
a06ea964
NC		 3261 stub_sec = stub_entry->stub_sec;
3262
3263 /* Make a note of the offset within the stubs for this entry. */
3264 stub_entry->stub_offset = stub_sec->size;
3265 loc = stub_sec->contents + stub_entry->stub_offset;
3266
3267 stub_bfd = stub_sec->owner;
3268
3269 /* This is the address of the stub destination. */
3270 sym_value = (stub_entry->target_value
3271 + stub_entry->target_section->output_offset
3272 + stub_entry->target_section->output_section->vma);
3273
3274 if (stub_entry->stub_type == aarch64_stub_long_branch)
3275 {
3276 bfd_vma place = (stub_entry->stub_offset + stub_sec->output_section->vma
3277 + stub_sec->output_offset);
3278
3279 /* See if we can relax the stub. */
3280 if (aarch64_valid_for_adrp_p (sym_value, place))
3281 stub_entry->stub_type = aarch64_select_branch_stub (sym_value, place);
3282 }
3283
3284 switch (stub_entry->stub_type)
3285 {
3286 case aarch64_stub_adrp_branch:
3287 template = aarch64_adrp_branch_stub;
3288 template_size = sizeof (aarch64_adrp_branch_stub);
3289 break;
3290 case aarch64_stub_long_branch:
3291 template = aarch64_long_branch_stub;
3292 template_size = sizeof (aarch64_long_branch_stub);
3293 break;
68fcca92
JW		 3294 case aarch64_stub_erratum_835769_veneer:
3295 template = aarch64_erratum_835769_stub;
3296 template_size = sizeof (aarch64_erratum_835769_stub);
3297 break;
4106101c
MS		 3298 case aarch64_stub_erratum_843419_veneer:
3299 template = aarch64_erratum_843419_stub;
3300 template_size = sizeof (aarch64_erratum_843419_stub);
3301 break;
a06ea964 3302 default:
8e2fe09f 3303 abort ();
a06ea964
NC		 3304 }
3305
3306 for (i = 0; i < (template_size / sizeof template[0]); i++)
3307 {
3308 bfd_putl32 (template[i], loc);
3309 loc += 4;
3310 }
3311
3312 template_size = (template_size + 7) & ~7;
3313 stub_sec->size += template_size;
3314
3315 switch (stub_entry->stub_type)
3316 {
3317 case aarch64_stub_adrp_branch:
1d75a8e2
NC		 3318 if (!aarch64_relocate (AARCH64_R (ADR_PREL_PG_HI21), stub_bfd, stub_sec,
3319 stub_entry->stub_offset, sym_value))
a06ea964
NC		 3320 /* The stub would not have been relaxed if the offset was out
3321 of range. */
3322 BFD_FAIL ();
3323
1d75a8e2
NC		 3324 if (!aarch64_relocate (AARCH64_R (ADD_ABS_LO12_NC), stub_bfd, stub_sec,
3325 stub_entry->stub_offset + 4, sym_value))
93ca8569 3326 BFD_FAIL ();
a06ea964
NC		 3327 break;
3328
3329 case aarch64_stub_long_branch:
3330 /* We want the value relative to the address 12 bytes back from the
07d6d2b8 3331 value itself. */
1d75a8e2
NC		 3332 if (!aarch64_relocate (AARCH64_R (PRELNN), stub_bfd, stub_sec,
3333 stub_entry->stub_offset + 16, sym_value + 12))
93ca8569 3334 BFD_FAIL ();
a06ea964 3335 break;
68fcca92
JW		 3336
3337 case aarch64_stub_erratum_835769_veneer:
3338 veneered_insn_loc = stub_entry->target_section->output_section->vma
3339 + stub_entry->target_section->output_offset
3340 + stub_entry->target_value;
3341 veneer_entry_loc = stub_entry->stub_sec->output_section->vma
3342 + stub_entry->stub_sec->output_offset
3343 + stub_entry->stub_offset;
3344 branch_offset = veneered_insn_loc - veneer_entry_loc;
3345 branch_offset >>= 2;
3346 branch_offset &= 0x3ffffff;
3347 bfd_putl32 (stub_entry->veneered_insn,
3348 stub_sec->contents + stub_entry->stub_offset);
3349 bfd_putl32 (template[1] | branch_offset,
3350 stub_sec->contents + stub_entry->stub_offset + 4);
3351 break;
3352
4106101c 3353 case aarch64_stub_erratum_843419_veneer:
1d75a8e2
NC		 3354 if (!aarch64_relocate (AARCH64_R (JUMP26), stub_bfd, stub_sec,
3355 stub_entry->stub_offset + 4, sym_value + 4))
4106101c
MS		 3356 BFD_FAIL ();
3357 break;
3358
a06ea964 3359 default:
8e2fe09f 3360 abort ();
a06ea964
NC		 3361 }
3362
3363 return TRUE;
3364}
3365
3366/* As above, but don't actually build the stub. Just bump offset so
3367 we know stub section sizes. */
3368
3369static bfd_boolean
739b5c9c 3370aarch64_size_one_stub (struct bfd_hash_entry *gen_entry, void *in_arg)
a06ea964 3371{
cec5225b 3372 struct elf_aarch64_stub_hash_entry *stub_entry;
739b5c9c 3373 struct elf_aarch64_link_hash_table *htab;
a06ea964
NC		 3374 int size;
3375
3376 /* Massage our args to the form they really have. */
cec5225b 3377 stub_entry = (struct elf_aarch64_stub_hash_entry *) gen_entry;
739b5c9c 3378 htab = (struct elf_aarch64_link_hash_table *) in_arg;
a06ea964
NC		 3379
3380 switch (stub_entry->stub_type)
3381 {
3382 case aarch64_stub_adrp_branch:
3383 size = sizeof (aarch64_adrp_branch_stub);
3384 break;
3385 case aarch64_stub_long_branch:
3386 size = sizeof (aarch64_long_branch_stub);
3387 break;
68fcca92
JW		 3388 case aarch64_stub_erratum_835769_veneer:
3389 size = sizeof (aarch64_erratum_835769_stub);
3390 break;
4106101c 3391 case aarch64_stub_erratum_843419_veneer:
739b5c9c
TC		 3392 {
3393 if (htab->fix_erratum_843419 == ERRAT_ADR)
3394 return TRUE;
3395 size = sizeof (aarch64_erratum_843419_stub);
3396 }
4106101c 3397 break;
a06ea964 3398 default:
8e2fe09f 3399 abort ();
a06ea964
NC		 3400 }
3401
3402 size = (size + 7) & ~7;
3403 stub_entry->stub_sec->size += size;
3404 return TRUE;
3405}
3406
3407/* External entry points for sizing and building linker stubs. */
3408
3409/* Set up various things so that we can make a list of input sections
3410 for each output section included in the link. Returns -1 on error,
3411 0 when no stubs will be needed, and 1 on success. */
3412
3413int
cec5225b 3414elfNN_aarch64_setup_section_lists (bfd *output_bfd,
a06ea964
NC		 3415 struct bfd_link_info *info)
3416{
3417 bfd *input_bfd;
3418 unsigned int bfd_count;
7292b3ac 3419 unsigned int top_id, top_index;
a06ea964
NC		 3420 asection *section;
3421 asection **input_list, **list;
986f0783 3422 size_t amt;
cec5225b
YZ		 3423 struct elf_aarch64_link_hash_table *htab =
3424 elf_aarch64_hash_table (info);
a06ea964
NC		 3425
3426 if (!is_elf_hash_table (htab))
3427 return 0;
3428
3429 /* Count the number of input BFDs and find the top input section id. */
3430 for (input_bfd = info->input_bfds, bfd_count = 0, top_id = 0;
c72f2fb2 3431 input_bfd != NULL; input_bfd = input_bfd->link.next)
a06ea964
NC		 3432 {
3433 bfd_count += 1;
3434 for (section = input_bfd->sections;
3435 section != NULL; section = section->next)
3436 {
3437 if (top_id < section->id)
3438 top_id = section->id;
3439 }
3440 }
3441 htab->bfd_count = bfd_count;
3442
3443 amt = sizeof (struct map_stub) * (top_id + 1);
3444 htab->stub_group = bfd_zmalloc (amt);
3445 if (htab->stub_group == NULL)
3446 return -1;
3447
3448 /* We can't use output_bfd->section_count here to find the top output
3449 section index as some sections may have been removed, and
3450 _bfd_strip_section_from_output doesn't renumber the indices. */
3451 for (section = output_bfd->sections, top_index = 0;
3452 section != NULL; section = section->next)
3453 {
3454 if (top_index < section->index)
3455 top_index = section->index;
3456 }
3457
3458 htab->top_index = top_index;
3459 amt = sizeof (asection *) * (top_index + 1);
3460 input_list = bfd_malloc (amt);
3461 htab->input_list = input_list;
3462 if (input_list == NULL)
3463 return -1;
3464
3465 /* For sections we aren't interested in, mark their entries with a
3466 value we can check later. */
3467 list = input_list + top_index;
3468 do
3469 *list = bfd_abs_section_ptr;
3470 while (list-- != input_list);
3471
3472 for (section = output_bfd->sections;
3473 section != NULL; section = section->next)
3474 {
3475 if ((section->flags & SEC_CODE) != 0)
3476 input_list[section->index] = NULL;
3477 }
3478
3479 return 1;
3480}
3481
cec5225b 3482/* Used by elfNN_aarch64_next_input_section and group_sections. */
a06ea964
NC		 3483#define PREV_SEC(sec) (htab->stub_group[(sec)->id].link_sec)
3484
3485/* The linker repeatedly calls this function for each input section,
3486 in the order that input sections are linked into output sections.
3487 Build lists of input sections to determine groupings between which
3488 we may insert linker stubs. */
3489
3490void
cec5225b 3491elfNN_aarch64_next_input_section (struct bfd_link_info *info, asection *isec)
a06ea964 3492{
cec5225b
YZ		 3493 struct elf_aarch64_link_hash_table *htab =
3494 elf_aarch64_hash_table (info);
a06ea964
NC		 3495
3496 if (isec->output_section->index <= htab->top_index)
3497 {
3498 asection **list = htab->input_list + isec->output_section->index;
3499
cff69cf4 3500 if (*list != bfd_abs_section_ptr && (isec->flags & SEC_CODE) != 0)
a06ea964
NC		 3501 {
3502 /* Steal the link_sec pointer for our list. */
3503 /* This happens to make the list in reverse order,
3504 which is what we want. */
3505 PREV_SEC (isec) = *list;
3506 *list = isec;
3507 }
3508 }
3509}
3510
3511/* See whether we can group stub sections together. Grouping stub
3512 sections may result in fewer stubs. More importantly, we need to
3513 put all .init* and .fini* stubs at the beginning of the .init or
3514 .fini output sections respectively, because glibc splits the
3515 _init and _fini functions into multiple parts. Putting a stub in
3516 the middle of a function is not a good idea. */
3517
3518static void
cec5225b 3519group_sections (struct elf_aarch64_link_hash_table *htab,
a06ea964 3520 bfd_size_type stub_group_size,
cff69cf4 3521 bfd_boolean stubs_always_after_branch)
a06ea964 3522{
cff69cf4 3523 asection **list = htab->input_list;
a06ea964
NC		 3524
3525 do
3526 {
3527 asection *tail = *list;
cff69cf4 3528 asection *head;
a06ea964
NC		 3529
3530 if (tail == bfd_abs_section_ptr)
3531 continue;
3532
cff69cf4
WD		 3533 /* Reverse the list: we must avoid placing stubs at the
3534 beginning of the section because the beginning of the text
3535 section may be required for an interrupt vector in bare metal
3536 code. */
3537#define NEXT_SEC PREV_SEC
3538 head = NULL;
a06ea964 3539 while (tail != NULL)
cff69cf4
WD		 3540 {
3541 /* Pop from tail. */
3542 asection *item = tail;
3543 tail = PREV_SEC (item);
3544
3545 /* Push on head. */
3546 NEXT_SEC (item) = head;
3547 head = item;
3548 }
3549
3550 while (head != NULL)
a06ea964
NC		 3551 {
3552 asection *curr;
cff69cf4
WD		 3553 asection *next;
3554 bfd_vma stub_group_start = head->output_offset;
3555 bfd_vma end_of_next;
a06ea964 3556
cff69cf4
WD		 3557 curr = head;
3558 while (NEXT_SEC (curr) != NULL)
3559 {
3560 next = NEXT_SEC (curr);
3561 end_of_next = next->output_offset + next->size;
3562 if (end_of_next - stub_group_start >= stub_group_size)
3563 /* End of NEXT is too far from start, so stop. */
3564 break;
3565 /* Add NEXT to the group. */
3566 curr = next;
3567 }
a06ea964 3568
cff69cf4 3569 /* OK, the size from the start to the start of CURR is less
a06ea964 3570 than stub_group_size and thus can be handled by one stub
cff69cf4 3571 section. (Or the head section is itself larger than
a06ea964
NC		 3572 stub_group_size, in which case we may be toast.)
3573 We should really be keeping track of the total size of
3574 stubs added here, as stubs contribute to the final output
3575 section size. */
3576 do
3577 {
cff69cf4 3578 next = NEXT_SEC (head);
a06ea964 3579 /* Set up this stub group. */
cff69cf4 3580 htab->stub_group[head->id].link_sec = curr;
a06ea964 3581 }
cff69cf4 3582 while (head != curr && (head = next) != NULL);
a06ea964
NC		 3583
3584 /* But wait, there's more! Input sections up to stub_group_size
cff69cf4
WD		 3585 bytes after the stub section can be handled by it too. */
3586 if (!stubs_always_after_branch)
a06ea964 3587 {
cff69cf4
WD		 3588 stub_group_start = curr->output_offset + curr->size;
3589
3590 while (next != NULL)
a06ea964 3591 {
cff69cf4
WD		 3592 end_of_next = next->output_offset + next->size;
3593 if (end_of_next - stub_group_start >= stub_group_size)
3594 /* End of NEXT is too far from stubs, so stop. */
3595 break;
3596 /* Add NEXT to the stub group. */
3597 head = next;
3598 next = NEXT_SEC (head);
3599 htab->stub_group[head->id].link_sec = curr;
a06ea964
NC		 3600 }
3601 }
cff69cf4 3602 head = next;
a06ea964
NC		 3603 }
3604 }
cff69cf4 3605 while (list++ != htab->input_list + htab->top_index);
a06ea964
NC		 3606
3607 free (htab->input_list);
3608}
3609
cff69cf4 3610#undef PREV_SEC
a06ea964
NC		 3611#undef PREV_SEC
3612
68fcca92
JW		 3613#define AARCH64_BITS(x, pos, n) (((x) >> (pos)) & ((1 << (n)) - 1))
3614
3615#define AARCH64_RT(insn) AARCH64_BITS (insn, 0, 5)
3616#define AARCH64_RT2(insn) AARCH64_BITS (insn, 10, 5)
3617#define AARCH64_RA(insn) AARCH64_BITS (insn, 10, 5)
3618#define AARCH64_RD(insn) AARCH64_BITS (insn, 0, 5)
3619#define AARCH64_RN(insn) AARCH64_BITS (insn, 5, 5)
3620#define AARCH64_RM(insn) AARCH64_BITS (insn, 16, 5)
3621
3622#define AARCH64_MAC(insn) (((insn) & 0xff000000) == 0x9b000000)
3623#define AARCH64_BIT(insn, n) AARCH64_BITS (insn, n, 1)
3624#define AARCH64_OP31(insn) AARCH64_BITS (insn, 21, 3)
3625#define AARCH64_ZR 0x1f
3626
3627/* All ld/st ops. See C4-182 of the ARM ARM. The encoding space for
3628 LD_PCREL, LDST_RO, LDST_UI and LDST_UIMM cover prefetch ops. */
3629
3630#define AARCH64_LD(insn) (AARCH64_BIT (insn, 22) == 1)
3631#define AARCH64_LDST(insn) (((insn) & 0x0a000000) == 0x08000000)
3632#define AARCH64_LDST_EX(insn) (((insn) & 0x3f000000) == 0x08000000)
3633#define AARCH64_LDST_PCREL(insn) (((insn) & 0x3b000000) == 0x18000000)
3634#define AARCH64_LDST_NAP(insn) (((insn) & 0x3b800000) == 0x28000000)
3635#define AARCH64_LDSTP_PI(insn) (((insn) & 0x3b800000) == 0x28800000)
3636#define AARCH64_LDSTP_O(insn) (((insn) & 0x3b800000) == 0x29000000)
3637#define AARCH64_LDSTP_PRE(insn) (((insn) & 0x3b800000) == 0x29800000)
3638#define AARCH64_LDST_UI(insn) (((insn) & 0x3b200c00) == 0x38000000)
3639#define AARCH64_LDST_PIIMM(insn) (((insn) & 0x3b200c00) == 0x38000400)
3640#define AARCH64_LDST_U(insn) (((insn) & 0x3b200c00) == 0x38000800)
3641#define AARCH64_LDST_PREIMM(insn) (((insn) & 0x3b200c00) == 0x38000c00)
3642#define AARCH64_LDST_RO(insn) (((insn) & 0x3b200c00) == 0x38200800)
3643#define AARCH64_LDST_UIMM(insn) (((insn) & 0x3b000000) == 0x39000000)
3644#define AARCH64_LDST_SIMD_M(insn) (((insn) & 0xbfbf0000) == 0x0c000000)
3645#define AARCH64_LDST_SIMD_M_PI(insn) (((insn) & 0xbfa00000) == 0x0c800000)
3646#define AARCH64_LDST_SIMD_S(insn) (((insn) & 0xbf9f0000) == 0x0d000000)
3647#define AARCH64_LDST_SIMD_S_PI(insn) (((insn) & 0xbf800000) == 0x0d800000)
3648
3d14faea
MS		 3649/* Classify an INSN if it is indeed a load/store.
3650
3651 Return TRUE if INSN is a LD/ST instruction otherwise return FALSE.
3652
3653 For scalar LD/ST instructions PAIR is FALSE, RT is returned and RT2
3654 is set equal to RT.
3655
2d0ca824 3656 For LD/ST pair instructions PAIR is TRUE, RT and RT2 are returned. */
68fcca92
JW		 3657
3658static bfd_boolean
3d14faea 3659aarch64_mem_op_p (uint32_t insn, unsigned int *rt, unsigned int *rt2,
68fcca92
JW		 3660 bfd_boolean *pair, bfd_boolean *load)
3661{
3662 uint32_t opcode;
3663 unsigned int r;
3664 uint32_t opc = 0;
3665 uint32_t v = 0;
3666 uint32_t opc_v = 0;
3667
de194d85 3668 /* Bail out quickly if INSN doesn't fall into the load-store
68fcca92
JW		 3669 encoding space. */
3670 if (!AARCH64_LDST (insn))
3671 return FALSE;
3672
3673 *pair = FALSE;
3674 *load = FALSE;
3675 if (AARCH64_LDST_EX (insn))
3676 {
3677 *rt = AARCH64_RT (insn);
3d14faea 3678 *rt2 = *rt;
68fcca92 3679 if (AARCH64_BIT (insn, 21) == 1)
07d6d2b8 3680 {
68fcca92 3681 *pair = TRUE;
3d14faea 3682 *rt2 = AARCH64_RT2 (insn);
68fcca92
JW		 3683 }
3684 *load = AARCH64_LD (insn);
3685 return TRUE;
3686 }
3687 else if (AARCH64_LDST_NAP (insn)
3688 || AARCH64_LDSTP_PI (insn)
3689 || AARCH64_LDSTP_O (insn)
3690 || AARCH64_LDSTP_PRE (insn))
3691 {
3692 *pair = TRUE;
3693 *rt = AARCH64_RT (insn);
3d14faea 3694 *rt2 = AARCH64_RT2 (insn);
68fcca92
JW		 3695 *load = AARCH64_LD (insn);
3696 return TRUE;
3697 }
3698 else if (AARCH64_LDST_PCREL (insn)
3699 || AARCH64_LDST_UI (insn)
3700 || AARCH64_LDST_PIIMM (insn)
3701 || AARCH64_LDST_U (insn)
3702 || AARCH64_LDST_PREIMM (insn)
3703 || AARCH64_LDST_RO (insn)
3704 || AARCH64_LDST_UIMM (insn))
3705 {
3706 *rt = AARCH64_RT (insn);
3d14faea 3707 *rt2 = *rt;
68fcca92
JW		 3708 if (AARCH64_LDST_PCREL (insn))
3709 *load = TRUE;
3710 opc = AARCH64_BITS (insn, 22, 2);
3711 v = AARCH64_BIT (insn, 26);
3712 opc_v = opc | (v << 2);
3713 *load = (opc_v == 1 || opc_v == 2 || opc_v == 3
3714 || opc_v == 5 || opc_v == 7);
3715 return TRUE;
3716 }
3717 else if (AARCH64_LDST_SIMD_M (insn)
3718 || AARCH64_LDST_SIMD_M_PI (insn))
3719 {
3720 *rt = AARCH64_RT (insn);
3721 *load = AARCH64_BIT (insn, 22);
3722 opcode = (insn >> 12) & 0xf;
3723 switch (opcode)
3724 {
3725 case 0:
3726 case 2:
3d14faea 3727 *rt2 = *rt + 3;
68fcca92
JW		 3728 break;
3729
3730 case 4:
3731 case 6:
3d14faea 3732 *rt2 = *rt + 2;
68fcca92
JW		 3733 break;
3734
3735 case 7:
3d14faea 3736 *rt2 = *rt;
68fcca92
JW		 3737 break;
3738
3739 case 8:
3740 case 10:
3d14faea 3741 *rt2 = *rt + 1;
68fcca92
JW		 3742 break;
3743
3744 default:
3745 return FALSE;
3746 }
3747 return TRUE;
3748 }
3749 else if (AARCH64_LDST_SIMD_S (insn)
3750 || AARCH64_LDST_SIMD_S_PI (insn))
3751 {
3752 *rt = AARCH64_RT (insn);
3753 r = (insn >> 21) & 1;
3754 *load = AARCH64_BIT (insn, 22);
3755 opcode = (insn >> 13) & 0x7;
3756 switch (opcode)
3757 {
3758 case 0:
3759 case 2:
3760 case 4:
3d14faea 3761 *rt2 = *rt + r;
68fcca92
JW		 3762 break;
3763
3764 case 1:
3765 case 3:
3766 case 5:
3d14faea 3767 *rt2 = *rt + (r == 0 ? 2 : 3);
68fcca92
JW		 3768 break;
3769
3770 case 6:
3d14faea 3771 *rt2 = *rt + r;
68fcca92
JW		 3772 break;
3773
3774 case 7:
3d14faea 3775 *rt2 = *rt + (r == 0 ? 2 : 3);
68fcca92
JW		 3776 break;
3777
3778 default:
3779 return FALSE;
3780 }
3781 return TRUE;
3782 }
3783
3784 return FALSE;
3785}
3786
3787/* Return TRUE if INSN is multiply-accumulate. */
3788
3789static bfd_boolean
3790aarch64_mlxl_p (uint32_t insn)
3791{
3792 uint32_t op31 = AARCH64_OP31 (insn);
3793
3794 if (AARCH64_MAC (insn)
3795 && (op31 == 0 || op31 == 1 || op31 == 5)
3796 /* Exclude MUL instructions which are encoded as a multiple accumulate
3797 with RA = XZR. */
3798 && AARCH64_RA (insn) != AARCH64_ZR)
3799 return TRUE;
3800
3801 return FALSE;
3802}
3803
3804/* Some early revisions of the Cortex-A53 have an erratum (835769) whereby
3805 it is possible for a 64-bit multiply-accumulate instruction to generate an
3806 incorrect result. The details are quite complex and hard to
3807 determine statically, since branches in the code may exist in some
3808 circumstances, but all cases end with a memory (load, store, or
3809 prefetch) instruction followed immediately by the multiply-accumulate
3810 operation. We employ a linker patching technique, by moving the potentially
3811 affected multiply-accumulate instruction into a patch region and replacing
3812 the original instruction with a branch to the patch. This function checks
3813 if INSN_1 is the memory operation followed by a multiply-accumulate
3814 operation (INSN_2). Return TRUE if an erratum sequence is found, FALSE
3815 if INSN_1 and INSN_2 are safe. */
3816
3817static bfd_boolean
3818aarch64_erratum_sequence (uint32_t insn_1, uint32_t insn_2)
3819{
3820 uint32_t rt;
3d14faea 3821 uint32_t rt2;
68fcca92
JW		 3822 uint32_t rn;
3823 uint32_t rm;
3824 uint32_t ra;
3825 bfd_boolean pair;
3826 bfd_boolean load;
3827
3828 if (aarch64_mlxl_p (insn_2)
3d14faea 3829 && aarch64_mem_op_p (insn_1, &rt, &rt2, &pair, &load))
68fcca92
JW		 3830 {
3831 /* Any SIMD memory op is independent of the subsequent MLA
3832 by definition of the erratum. */
3833 if (AARCH64_BIT (insn_1, 26))
3834 return TRUE;
3835
3836 /* If not SIMD, check for integer memory ops and MLA relationship. */
3837 rn = AARCH64_RN (insn_2);
3838 ra = AARCH64_RA (insn_2);
3839 rm = AARCH64_RM (insn_2);
3840
3841 /* If this is a load and there's a true(RAW) dependency, we are safe
3842 and this is not an erratum sequence. */
3843 if (load &&
3844 (rt == rn || rt == rm || rt == ra
3d14faea 3845 || (pair && (rt2 == rn || rt2 == rm || rt2 == ra))))
68fcca92
JW		 3846 return FALSE;
3847
3848 /* We conservatively put out stubs for all other cases (including
3849 writebacks). */
3850 return TRUE;
3851 }
3852
3853 return FALSE;
3854}
3855
520c7b56
JW		 3856/* Used to order a list of mapping symbols by address. */
3857
3858static int
3859elf_aarch64_compare_mapping (const void *a, const void *b)
3860{
3861 const elf_aarch64_section_map *amap = (const elf_aarch64_section_map *) a;
3862 const elf_aarch64_section_map *bmap = (const elf_aarch64_section_map *) b;
3863
3864 if (amap->vma > bmap->vma)
3865 return 1;
3866 else if (amap->vma < bmap->vma)
3867 return -1;
3868 else if (amap->type > bmap->type)
3869 /* Ensure results do not depend on the host qsort for objects with
3870 multiple mapping symbols at the same address by sorting on type
3871 after vma. */
3872 return 1;
3873 else if (amap->type < bmap->type)
3874 return -1;
3875 else
3876 return 0;
3877}
3878
2144188d 3879
35fee8b7
MS		 3880static char *
3881_bfd_aarch64_erratum_835769_stub_name (unsigned num_fixes)
3882{
3883 char *stub_name = (char *) bfd_malloc
3884 (strlen ("__erratum_835769_veneer_") + 16);
bb69498c
NC		 3885 if (stub_name != NULL)
3886 sprintf (stub_name,"__erratum_835769_veneer_%d", num_fixes);
35fee8b7
MS		 3887 return stub_name;
3888}
3889
4106101c 3890/* Scan for Cortex-A53 erratum 835769 sequence.
2144188d
MS		 3891
3892 Return TRUE else FALSE on abnormal termination. */
3893
68fcca92 3894static bfd_boolean
5421cc6e
MS		 3895_bfd_aarch64_erratum_835769_scan (bfd *input_bfd,
3896 struct bfd_link_info *info,
3897 unsigned int *num_fixes_p)
68fcca92
JW		 3898{
3899 asection *section;
3900 struct elf_aarch64_link_hash_table *htab = elf_aarch64_hash_table (info);
68fcca92 3901 unsigned int num_fixes = *num_fixes_p;
68fcca92
JW		 3902
3903 if (htab == NULL)
2144188d 3904 return TRUE;
68fcca92
JW		 3905
3906 for (section = input_bfd->sections;
3907 section != NULL;
3908 section = section->next)
3909 {
3910 bfd_byte *contents = NULL;
3911 struct _aarch64_elf_section_data *sec_data;
3912 unsigned int span;
3913
3914 if (elf_section_type (section) != SHT_PROGBITS
3915 || (elf_section_flags (section) & SHF_EXECINSTR) == 0
3916 || (section->flags & SEC_EXCLUDE) != 0
3917 || (section->sec_info_type == SEC_INFO_TYPE_JUST_SYMS)
3918 || (section->output_section == bfd_abs_section_ptr))
3919 continue;
3920
3921 if (elf_section_data (section)->this_hdr.contents != NULL)
3922 contents = elf_section_data (section)->this_hdr.contents;
3923 else if (! bfd_malloc_and_get_section (input_bfd, section, &contents))
2144188d 3924 return FALSE;
68fcca92
JW		 3925
3926 sec_data = elf_aarch64_section_data (section);
520c7b56 3927
ccf61261
NC		 3928 if (sec_data->mapcount)
3929 qsort (sec_data->map, sec_data->mapcount,
3930 sizeof (elf_aarch64_section_map), elf_aarch64_compare_mapping);
520c7b56 3931
68fcca92
JW		 3932 for (span = 0; span < sec_data->mapcount; span++)
3933 {
3934 unsigned int span_start = sec_data->map[span].vma;
3935 unsigned int span_end = ((span == sec_data->mapcount - 1)
3936 ? sec_data->map[0].vma + section->size
3937 : sec_data->map[span + 1].vma);
3938 unsigned int i;
3939 char span_type = sec_data->map[span].type;
3940
3941 if (span_type == 'd')
3942 continue;
3943
3944 for (i = span_start; i + 4 < span_end; i += 4)
3945 {
3946 uint32_t insn_1 = bfd_getl32 (contents + i);
3947 uint32_t insn_2 = bfd_getl32 (contents + i + 4);
3948
3949 if (aarch64_erratum_sequence (insn_1, insn_2))
3950 {
5421cc6e 3951 struct elf_aarch64_stub_hash_entry *stub_entry;
35fee8b7
MS		 3952 char *stub_name = _bfd_aarch64_erratum_835769_stub_name (num_fixes);
3953 if (! stub_name)
2144188d 3954 return FALSE;
68fcca92 3955
5421cc6e
MS		 3956 stub_entry = _bfd_aarch64_add_stub_entry_in_group (stub_name,
3957 section,
3958 htab);
3959 if (! stub_entry)
3960 return FALSE;
68fcca92 3961
5421cc6e
MS		 3962 stub_entry->stub_type = aarch64_stub_erratum_835769_veneer;
3963 stub_entry->target_section = section;
3964 stub_entry->target_value = i + 4;
3965 stub_entry->veneered_insn = insn_2;
3966 stub_entry->output_name = stub_name;
68fcca92
JW		 3967 num_fixes++;
3968 }
3969 }
3970 }
3971 if (elf_section_data (section)->this_hdr.contents == NULL)
3972 free (contents);
3973 }
3974
357d1523
MS		 3975 *num_fixes_p = num_fixes;
3976
2144188d 3977 return TRUE;
68fcca92
JW		 3978}
3979
13f622ec 3980
4106101c
MS		 3981/* Test if instruction INSN is ADRP. */
3982
3983static bfd_boolean
3984_bfd_aarch64_adrp_p (uint32_t insn)
3985{
9fca35fc 3986 return ((insn & AARCH64_ADRP_OP_MASK) == AARCH64_ADRP_OP);
4106101c
MS		 3987}
3988
3989
3990/* Helper predicate to look for cortex-a53 erratum 843419 sequence 1. */
3991
3992static bfd_boolean
3993_bfd_aarch64_erratum_843419_sequence_p (uint32_t insn_1, uint32_t insn_2,
3994 uint32_t insn_3)
3995{
3996 uint32_t rt;
3997 uint32_t rt2;
3998 bfd_boolean pair;
3999 bfd_boolean load;
4000
4001 return (aarch64_mem_op_p (insn_2, &rt, &rt2, &pair, &load)
4002 && (!pair
4003 || (pair && !load))
4004 && AARCH64_LDST_UIMM (insn_3)
4005 && AARCH64_RN (insn_3) == AARCH64_RD (insn_1));
4006}
4007
4008
4009/* Test for the presence of Cortex-A53 erratum 843419 instruction sequence.
4010
4011 Return TRUE if section CONTENTS at offset I contains one of the
4012 erratum 843419 sequences, otherwise return FALSE. If a sequence is
4013 seen set P_VENEER_I to the offset of the final LOAD/STORE
4014 instruction in the sequence.
4015 */
4016
4017static bfd_boolean
4018_bfd_aarch64_erratum_843419_p (bfd_byte *contents, bfd_vma vma,
4019 bfd_vma i, bfd_vma span_end,
4020 bfd_vma *p_veneer_i)
4021{
4022 uint32_t insn_1 = bfd_getl32 (contents + i);
4023
4024 if (!_bfd_aarch64_adrp_p (insn_1))
4025 return FALSE;
4026
4027 if (span_end < i + 12)
4028 return FALSE;
4029
4030 uint32_t insn_2 = bfd_getl32 (contents + i + 4);
4031 uint32_t insn_3 = bfd_getl32 (contents + i + 8);
4032
4033 if ((vma & 0xfff) != 0xff8 && (vma & 0xfff) != 0xffc)
4034 return FALSE;
4035
4036 if (_bfd_aarch64_erratum_843419_sequence_p (insn_1, insn_2, insn_3))
4037 {
4038 *p_veneer_i = i + 8;
4039 return TRUE;
4040 }
4041
4042 if (span_end < i + 16)
4043 return FALSE;
4044
4045 uint32_t insn_4 = bfd_getl32 (contents + i + 12);
4046
4047 if (_bfd_aarch64_erratum_843419_sequence_p (insn_1, insn_2, insn_4))
4048 {
4049 *p_veneer_i = i + 12;
4050 return TRUE;
4051 }
4052
4053 return FALSE;
4054}
4055
4056
13f622ec
MS		 4057/* Resize all stub sections. */
4058
4059static void
4060_bfd_aarch64_resize_stubs (struct elf_aarch64_link_hash_table *htab)
4061{
4062 asection *section;
4063
4064 /* OK, we've added some stubs. Find out the new size of the
4065 stub sections. */
4066 for (section = htab->stub_bfd->sections;
4067 section != NULL; section = section->next)
4068 {
4069 /* Ignore non-stub sections. */
4070 if (!strstr (section->name, STUB_SUFFIX))
4071 continue;
4072 section->size = 0;
4073 }
4074
4075 bfd_hash_traverse (&htab->stub_hash_table, aarch64_size_one_stub, htab);
13f622ec 4076
61865519
MS		 4077 for (section = htab->stub_bfd->sections;
4078 section != NULL; section = section->next)
4079 {
4080 if (!strstr (section->name, STUB_SUFFIX))
4081 continue;
4082
9a2ebffd
JW		 4083 /* Add space for a branch. Add 8 bytes to keep section 8 byte aligned,
4084 as long branch stubs contain a 64-bit address. */
61865519 4085 if (section->size)
9a2ebffd 4086 section->size += 8;
4106101c
MS		 4087
4088 /* Ensure all stub sections have a size which is a multiple of
4089 4096. This is important in order to ensure that the insertion
4090 of stub sections does not in itself move existing code around
739b5c9c
TC		 4091 in such a way that new errata sequences are created. We only do this
4092 when the ADRP workaround is enabled. If only the ADR workaround is
4093 enabled then the stubs workaround won't ever be used. */
4094 if (htab->fix_erratum_843419 & ERRAT_ADRP)
4106101c
MS		 4095 if (section->size)
4096 section->size = BFD_ALIGN (section->size, 0x1000);
4097 }
4098}
4099
9a2ebffd 4100/* Construct an erratum 843419 workaround stub name. */
4106101c
MS		 4101
4102static char *
4103_bfd_aarch64_erratum_843419_stub_name (asection *input_section,
4104 bfd_vma offset)
4105{
4106 const bfd_size_type len = 8 + 4 + 1 + 8 + 1 + 16 + 1;
4107 char *stub_name = bfd_malloc (len);
4108
4109 if (stub_name != NULL)
4110 snprintf (stub_name, len, "e843419@%04x_%08x_%" BFD_VMA_FMT "x",
4111 input_section->owner->id,
4112 input_section->id,
4113 offset);
4114 return stub_name;
4115}
4116
4117/* Build a stub_entry structure describing an 843419 fixup.
4118
4119 The stub_entry constructed is populated with the bit pattern INSN
4120 of the instruction located at OFFSET within input SECTION.
4121
4122 Returns TRUE on success. */
4123
4124static bfd_boolean
4125_bfd_aarch64_erratum_843419_fixup (uint32_t insn,
4126 bfd_vma adrp_offset,
4127 bfd_vma ldst_offset,
4128 asection *section,
4129 struct bfd_link_info *info)
4130{
4131 struct elf_aarch64_link_hash_table *htab = elf_aarch64_hash_table (info);
4132 char *stub_name;
4133 struct elf_aarch64_stub_hash_entry *stub_entry;
4134
4135 stub_name = _bfd_aarch64_erratum_843419_stub_name (section, ldst_offset);
bb69498c
NC		 4136 if (stub_name == NULL)
4137 return FALSE;
4106101c
MS		 4138 stub_entry = aarch64_stub_hash_lookup (&htab->stub_hash_table, stub_name,
4139 FALSE, FALSE);
4140 if (stub_entry)
4141 {
4142 free (stub_name);
4143 return TRUE;
4144 }
4145
4146 /* We always place an 843419 workaround veneer in the stub section
4147 attached to the input section in which an erratum sequence has
4148 been found. This ensures that later in the link process (in
4149 elfNN_aarch64_write_section) when we copy the veneered
4150 instruction from the input section into the stub section the
4151 copied instruction will have had any relocations applied to it.
4152 If we placed workaround veneers in any other stub section then we
4153 could not assume that all relocations have been processed on the
4154 corresponding input section at the point we output the stub
bb69498c 4155 section. */
4106101c
MS		 4156
4157 stub_entry = _bfd_aarch64_add_stub_entry_after (stub_name, section, htab);
4158 if (stub_entry == NULL)
4159 {
4160 free (stub_name);
4161 return FALSE;
4162 }
4163
4164 stub_entry->adrp_offset = adrp_offset;
4165 stub_entry->target_value = ldst_offset;
4166 stub_entry->target_section = section;
4167 stub_entry->stub_type = aarch64_stub_erratum_843419_veneer;
4168 stub_entry->veneered_insn = insn;
4169 stub_entry->output_name = stub_name;
4170
4171 return TRUE;
4172}
4173
4174
4175/* Scan an input section looking for the signature of erratum 843419.
4176
4177 Scans input SECTION in INPUT_BFD looking for erratum 843419
4178 signatures, for each signature found a stub_entry is created
4179 describing the location of the erratum for subsequent fixup.
4180
4181 Return TRUE on successful scan, FALSE on failure to scan.
4182 */
4183
4184static bfd_boolean
4185_bfd_aarch64_erratum_843419_scan (bfd *input_bfd, asection *section,
4186 struct bfd_link_info *info)
4187{
4188 struct elf_aarch64_link_hash_table *htab = elf_aarch64_hash_table (info);
4189
4190 if (htab == NULL)
4191 return TRUE;
4192
4193 if (elf_section_type (section) != SHT_PROGBITS
4194 || (elf_section_flags (section) & SHF_EXECINSTR) == 0
4195 || (section->flags & SEC_EXCLUDE) != 0
4196 || (section->sec_info_type == SEC_INFO_TYPE_JUST_SYMS)
4197 || (section->output_section == bfd_abs_section_ptr))
4198 return TRUE;
4199
4200 do
4201 {
4202 bfd_byte *contents = NULL;
4203 struct _aarch64_elf_section_data *sec_data;
4204 unsigned int span;
4205
4206 if (elf_section_data (section)->this_hdr.contents != NULL)
4207 contents = elf_section_data (section)->this_hdr.contents;
4208 else if (! bfd_malloc_and_get_section (input_bfd, section, &contents))
4209 return FALSE;
4210
4211 sec_data = elf_aarch64_section_data (section);
4212
ccf61261
NC		 4213 if (sec_data->mapcount)
4214 qsort (sec_data->map, sec_data->mapcount,
4215 sizeof (elf_aarch64_section_map), elf_aarch64_compare_mapping);
4106101c
MS		 4216
4217 for (span = 0; span < sec_data->mapcount; span++)
4218 {
4219 unsigned int span_start = sec_data->map[span].vma;
4220 unsigned int span_end = ((span == sec_data->mapcount - 1)
4221 ? sec_data->map[0].vma + section->size
4222 : sec_data->map[span + 1].vma);
4223 unsigned int i;
4224 char span_type = sec_data->map[span].type;
4225
4226 if (span_type == 'd')
4227 continue;
4228
4229 for (i = span_start; i + 8 < span_end; i += 4)
4230 {
4231 bfd_vma vma = (section->output_section->vma
4232 + section->output_offset
4233 + i);
4234 bfd_vma veneer_i;
4235
4236 if (_bfd_aarch64_erratum_843419_p
4237 (contents, vma, i, span_end, &veneer_i))
4238 {
4239 uint32_t insn = bfd_getl32 (contents + veneer_i);
4240
4241 if (!_bfd_aarch64_erratum_843419_fixup (insn, i, veneer_i,
4242 section, info))
4243 return FALSE;
4244 }
4245 }
4246 }
4247
4248 if (elf_section_data (section)->this_hdr.contents == NULL)
4249 free (contents);
61865519 4250 }
4106101c
MS		 4251 while (0);
4252
4253 return TRUE;
61865519 4254}
13f622ec 4255
4106101c 4256
a06ea964
NC		 4257/* Determine and set the size of the stub section for a final link.
4258
4259 The basic idea here is to examine all the relocations looking for
4260 PC-relative calls to a target that is unreachable with a "bl"
4261 instruction. */
4262
4263bfd_boolean
cec5225b 4264elfNN_aarch64_size_stubs (bfd *output_bfd,
a06ea964
NC		 4265 bfd *stub_bfd,
4266 struct bfd_link_info *info,
4267 bfd_signed_vma group_size,
4268 asection * (*add_stub_section) (const char *,
4269 asection *),
4270 void (*layout_sections_again) (void))
4271{
4272 bfd_size_type stub_group_size;
4273 bfd_boolean stubs_always_before_branch;
5421cc6e 4274 bfd_boolean stub_changed = FALSE;
cec5225b 4275 struct elf_aarch64_link_hash_table *htab = elf_aarch64_hash_table (info);
68fcca92 4276 unsigned int num_erratum_835769_fixes = 0;
a06ea964
NC		 4277
4278 /* Propagate mach to stub bfd, because it may not have been
4279 finalized when we created stub_bfd. */
4280 bfd_set_arch_mach (stub_bfd, bfd_get_arch (output_bfd),
4281 bfd_get_mach (output_bfd));
4282
4283 /* Stash our params away. */
4284 htab->stub_bfd = stub_bfd;
4285 htab->add_stub_section = add_stub_section;
4286 htab->layout_sections_again = layout_sections_again;
4287 stubs_always_before_branch = group_size < 0;
4288 if (group_size < 0)
4289 stub_group_size = -group_size;
4290 else
4291 stub_group_size = group_size;
4292
4293 if (stub_group_size == 1)
4294 {
4295 /* Default values. */
b9eead84 4296 /* AArch64 branch range is +-128MB. The value used is 1MB less. */
a06ea964
NC		 4297 stub_group_size = 127 * 1024 * 1024;
4298 }
4299
4300 group_sections (htab, stub_group_size, stubs_always_before_branch);
4301
4106101c
MS		 4302 (*htab->layout_sections_again) ();
4303
5421cc6e
MS		 4304 if (htab->fix_erratum_835769)
4305 {
4306 bfd *input_bfd;
4307
4308 for (input_bfd = info->input_bfds;
4309 input_bfd != NULL; input_bfd = input_bfd->link.next)
8c803a2d
AM		 4310 {
4311 if (!is_aarch64_elf (input_bfd)
4312 || (input_bfd->flags & BFD_LINKER_CREATED) != 0)
4313 continue;
4314
4315 if (!_bfd_aarch64_erratum_835769_scan (input_bfd, info,
4316 &num_erratum_835769_fixes))
4317 return FALSE;
4318 }
5421cc6e 4319
4106101c
MS		 4320 _bfd_aarch64_resize_stubs (htab);
4321 (*htab->layout_sections_again) ();
4322 }
4323
739b5c9c 4324 if (htab->fix_erratum_843419 != ERRAT_NONE)
4106101c
MS		 4325 {
4326 bfd *input_bfd;
4327
4328 for (input_bfd = info->input_bfds;
4329 input_bfd != NULL;
4330 input_bfd = input_bfd->link.next)
4331 {
4332 asection *section;
4333
8c803a2d
AM		 4334 if (!is_aarch64_elf (input_bfd)
4335 || (input_bfd->flags & BFD_LINKER_CREATED) != 0)
4336 continue;
4337
4106101c
MS		 4338 for (section = input_bfd->sections;
4339 section != NULL;
4340 section = section->next)
4341 if (!_bfd_aarch64_erratum_843419_scan (input_bfd, section, info))
4342 return FALSE;
4343 }
4344
4345 _bfd_aarch64_resize_stubs (htab);
4346 (*htab->layout_sections_again) ();
5421cc6e
MS		 4347 }
4348
a06ea964
NC		 4349 while (1)
4350 {
4351 bfd *input_bfd;
a06ea964 4352
9b9971aa
MS		 4353 for (input_bfd = info->input_bfds;
4354 input_bfd != NULL; input_bfd = input_bfd->link.next)
a06ea964
NC		 4355 {
4356 Elf_Internal_Shdr *symtab_hdr;
4357 asection *section;
4358 Elf_Internal_Sym *local_syms = NULL;
4359
8c803a2d
AM		 4360 if (!is_aarch64_elf (input_bfd)
4361 || (input_bfd->flags & BFD_LINKER_CREATED) != 0)
4362 continue;
4363
a06ea964
NC		 4364 /* We'll need the symbol table in a second. */
4365 symtab_hdr = &elf_tdata (input_bfd)->symtab_hdr;
4366 if (symtab_hdr->sh_info == 0)
4367 continue;
4368
4369 /* Walk over each section attached to the input bfd. */
4370 for (section = input_bfd->sections;
4371 section != NULL; section = section->next)
4372 {
4373 Elf_Internal_Rela *internal_relocs, *irelaend, *irela;
4374
4375 /* If there aren't any relocs, then there's nothing more
4376 to do. */
4377 if ((section->flags & SEC_RELOC) == 0
4378 || section->reloc_count == 0
4379 || (section->flags & SEC_CODE) == 0)
4380 continue;
4381
4382 /* If this section is a link-once section that will be
4383 discarded, then don't create any stubs. */
4384 if (section->output_section == NULL
4385 || section->output_section->owner != output_bfd)
4386 continue;
4387
4388 /* Get the relocs. */
4389 internal_relocs
4390 = _bfd_elf_link_read_relocs (input_bfd, section, NULL,
4391 NULL, info->keep_memory);
4392 if (internal_relocs == NULL)
4393 goto error_ret_free_local;
4394
4395 /* Now examine each relocation. */
4396 irela = internal_relocs;
4397 irelaend = irela + section->reloc_count;
4398 for (; irela < irelaend; irela++)
4399 {
4400 unsigned int r_type, r_indx;
cec5225b
YZ		 4401 enum elf_aarch64_stub_type stub_type;
4402 struct elf_aarch64_stub_hash_entry *stub_entry;
a06ea964
NC		 4403 asection *sym_sec;
4404 bfd_vma sym_value;
4405 bfd_vma destination;
cec5225b 4406 struct elf_aarch64_link_hash_entry *hash;
a06ea964
NC		 4407 const char *sym_name;
4408 char *stub_name;
4409 const asection *id_sec;
4410 unsigned char st_type;
4411 bfd_size_type len;
4412
cec5225b
YZ		 4413 r_type = ELFNN_R_TYPE (irela->r_info);
4414 r_indx = ELFNN_R_SYM (irela->r_info);
a06ea964
NC		 4415
4416 if (r_type >= (unsigned int) R_AARCH64_end)
4417 {
4418 bfd_set_error (bfd_error_bad_value);
4419 error_ret_free_internal:
4420 if (elf_section_data (section)->relocs == NULL)
4421 free (internal_relocs);
4422 goto error_ret_free_local;
4423 }
4424
4425 /* Only look for stubs on unconditional branch and
4426 branch and link instructions. */
a6bb11b2
YZ		 4427 if (r_type != (unsigned int) AARCH64_R (CALL26)
4428 && r_type != (unsigned int) AARCH64_R (JUMP26))
a06ea964
NC		 4429 continue;
4430
4431 /* Now determine the call target, its name, value,
4432 section. */
4433 sym_sec = NULL;
4434 sym_value = 0;
4435 destination = 0;
4436 hash = NULL;
4437 sym_name = NULL;
4438 if (r_indx < symtab_hdr->sh_info)
4439 {
4440 /* It's a local symbol. */
4441 Elf_Internal_Sym *sym;
4442 Elf_Internal_Shdr *hdr;
4443
4444 if (local_syms == NULL)
4445 {
4446 local_syms
4447 = (Elf_Internal_Sym *) symtab_hdr->contents;
4448 if (local_syms == NULL)
4449 local_syms
4450 = bfd_elf_get_elf_syms (input_bfd, symtab_hdr,
4451 symtab_hdr->sh_info, 0,
4452 NULL, NULL, NULL);
4453 if (local_syms == NULL)
4454 goto error_ret_free_internal;
4455 }
4456
4457 sym = local_syms + r_indx;
4458 hdr = elf_elfsections (input_bfd)[sym->st_shndx];
4459 sym_sec = hdr->bfd_section;
4460 if (!sym_sec)
4461 /* This is an undefined symbol. It can never
4462 be resolved. */
4463 continue;
4464
4465 if (ELF_ST_TYPE (sym->st_info) != STT_SECTION)
4466 sym_value = sym->st_value;
4467 destination = (sym_value + irela->r_addend
4468 + sym_sec->output_offset
4469 + sym_sec->output_section->vma);
4470 st_type = ELF_ST_TYPE (sym->st_info);
4471 sym_name
4472 = bfd_elf_string_from_elf_section (input_bfd,
4473 symtab_hdr->sh_link,
4474 sym->st_name);
4475 }
4476 else
4477 {
4478 int e_indx;
4479
4480 e_indx = r_indx - symtab_hdr->sh_info;
cec5225b 4481 hash = ((struct elf_aarch64_link_hash_entry *)
a06ea964
NC		 4482 elf_sym_hashes (input_bfd)[e_indx]);
4483
4484 while (hash->root.root.type == bfd_link_hash_indirect
4485 || hash->root.root.type == bfd_link_hash_warning)
cec5225b 4486 hash = ((struct elf_aarch64_link_hash_entry *)
a06ea964
NC		 4487 hash->root.root.u.i.link);
4488
4489 if (hash->root.root.type == bfd_link_hash_defined
4490 || hash->root.root.type == bfd_link_hash_defweak)
4491 {
cec5225b
YZ		 4492 struct elf_aarch64_link_hash_table *globals =
4493 elf_aarch64_hash_table (info);
a06ea964
NC		 4494 sym_sec = hash->root.root.u.def.section;
4495 sym_value = hash->root.root.u.def.value;
4496 /* For a destination in a shared library,
4497 use the PLT stub as target address to
4498 decide whether a branch stub is
4499 needed. */
4500 if (globals->root.splt != NULL && hash != NULL
4501 && hash->root.plt.offset != (bfd_vma) - 1)
4502 {
4503 sym_sec = globals->root.splt;
4504 sym_value = hash->root.plt.offset;
4505 if (sym_sec->output_section != NULL)
4506 destination = (sym_value
4507 + sym_sec->output_offset
4508 +
4509 sym_sec->output_section->vma);
4510 }
4511 else if (sym_sec->output_section != NULL)
4512 destination = (sym_value + irela->r_addend
4513 + sym_sec->output_offset
4514 + sym_sec->output_section->vma);
4515 }
4516 else if (hash->root.root.type == bfd_link_hash_undefined
4517 || (hash->root.root.type
4518 == bfd_link_hash_undefweak))
4519 {
4520 /* For a shared library, use the PLT stub as
4521 target address to decide whether a long
4522 branch stub is needed.
4523 For absolute code, they cannot be handled. */
cec5225b
YZ		 4524 struct elf_aarch64_link_hash_table *globals =
4525 elf_aarch64_hash_table (info);
a06ea964
NC		 4526
4527 if (globals->root.splt != NULL && hash != NULL
4528 && hash->root.plt.offset != (bfd_vma) - 1)
4529 {
4530 sym_sec = globals->root.splt;
4531 sym_value = hash->root.plt.offset;
4532 if (sym_sec->output_section != NULL)
4533 destination = (sym_value
4534 + sym_sec->output_offset
4535 +
4536 sym_sec->output_section->vma);
4537 }
4538 else
4539 continue;
4540 }
4541 else
4542 {
4543 bfd_set_error (bfd_error_bad_value);
4544 goto error_ret_free_internal;
4545 }
4546 st_type = ELF_ST_TYPE (hash->root.type);
4547 sym_name = hash->root.root.root.string;
4548 }
4549
4550 /* Determine what (if any) linker stub is needed. */
9a228467
JW		 4551 stub_type = aarch64_type_of_stub (section, irela, sym_sec,
4552 st_type, destination);
a06ea964
NC		 4553 if (stub_type == aarch64_stub_none)
4554 continue;
4555
4556 /* Support for grouping stub sections. */
4557 id_sec = htab->stub_group[section->id].link_sec;
4558
4559 /* Get the name of this stub. */
cec5225b 4560 stub_name = elfNN_aarch64_stub_name (id_sec, sym_sec, hash,
a06ea964
NC		 4561 irela);
4562 if (!stub_name)
4563 goto error_ret_free_internal;
4564
4565 stub_entry =
4566 aarch64_stub_hash_lookup (&htab->stub_hash_table,
4567 stub_name, FALSE, FALSE);
4568 if (stub_entry != NULL)
4569 {
4570 /* The proper stub has already been created. */
4571 free (stub_name);
3da64fe4
RA		 4572 /* Always update this stub's target since it may have
4573 changed after layout. */
4574 stub_entry->target_value = sym_value + irela->r_addend;
a06ea964
NC		 4575 continue;
4576 }
4577
ef857521
MS		 4578 stub_entry = _bfd_aarch64_add_stub_entry_in_group
4579 (stub_name, section, htab);
a06ea964
NC		 4580 if (stub_entry == NULL)
4581 {
4582 free (stub_name);
4583 goto error_ret_free_internal;
4584 }
4585
2f340668 4586 stub_entry->target_value = sym_value + irela->r_addend;
a06ea964
NC		 4587 stub_entry->target_section = sym_sec;
4588 stub_entry->stub_type = stub_type;
4589 stub_entry->h = hash;
4590 stub_entry->st_type = st_type;
4591
4592 if (sym_name == NULL)
4593 sym_name = "unnamed";
4594 len = sizeof (STUB_ENTRY_NAME) + strlen (sym_name);
4595 stub_entry->output_name = bfd_alloc (htab->stub_bfd, len);
4596 if (stub_entry->output_name == NULL)
4597 {
4598 free (stub_name);
4599 goto error_ret_free_internal;
4600 }
4601
4602 snprintf (stub_entry->output_name, len, STUB_ENTRY_NAME,
4603 sym_name);
4604
4605 stub_changed = TRUE;
4606 }
4607
4608 /* We're done with the internal relocs, free them. */
4609 if (elf_section_data (section)->relocs == NULL)
4610 free (internal_relocs);
4611 }
4612 }
4613
4614 if (!stub_changed)
4615 break;
4616
13f622ec 4617 _bfd_aarch64_resize_stubs (htab);
a06ea964
NC		 4618
4619 /* Ask the linker to do its stuff. */
4620 (*htab->layout_sections_again) ();
4621 stub_changed = FALSE;
4622 }
4623
4624 return TRUE;
4625
dc1e8a47 4626 error_ret_free_local:
a06ea964
NC		 4627 return FALSE;
4628}
4629
4630/* Build all the stubs associated with the current output file. The
4631 stubs are kept in a hash table attached to the main linker hash
4632 table. We also set up the .plt entries for statically linked PIC
4633 functions here. This function is called via aarch64_elf_finish in the
4634 linker. */
4635
4636bfd_boolean
cec5225b 4637elfNN_aarch64_build_stubs (struct bfd_link_info *info)
a06ea964
NC		 4638{
4639 asection *stub_sec;
4640 struct bfd_hash_table *table;
cec5225b 4641 struct elf_aarch64_link_hash_table *htab;
a06ea964 4642
cec5225b 4643 htab = elf_aarch64_hash_table (info);
a06ea964
NC		 4644
4645 for (stub_sec = htab->stub_bfd->sections;
4646 stub_sec != NULL; stub_sec = stub_sec->next)
4647 {
4648 bfd_size_type size;
4649
4650 /* Ignore non-stub sections. */
4651 if (!strstr (stub_sec->name, STUB_SUFFIX))
4652 continue;
4653
4654 /* Allocate memory to hold the linker stubs. */
4655 size = stub_sec->size;
4656 stub_sec->contents = bfd_zalloc (htab->stub_bfd, size);
4657 if (stub_sec->contents == NULL && size != 0)
4658 return FALSE;
4659 stub_sec->size = 0;
61865519 4660
9a2ebffd
JW		 4661 /* Add a branch around the stub section, and a nop, to keep it 8 byte
4662 aligned, as long branch stubs contain a 64-bit address. */
61865519 4663 bfd_putl32 (0x14000000 | (size >> 2), stub_sec->contents);
9a2ebffd
JW		 4664 bfd_putl32 (INSN_NOP, stub_sec->contents + 4);
4665 stub_sec->size += 8;
a06ea964
NC		 4666 }
4667
4668 /* Build the stubs as directed by the stub hash table. */
4669 table = &htab->stub_hash_table;
4670 bfd_hash_traverse (table, aarch64_build_one_stub, info);
4671
4672 return TRUE;
4673}
4674
4675
4676/* Add an entry to the code/data map for section SEC. */
4677
4678static void
cec5225b 4679elfNN_aarch64_section_map_add (asection *sec, char type, bfd_vma vma)
a06ea964
NC		 4680{
4681 struct _aarch64_elf_section_data *sec_data =
cec5225b 4682 elf_aarch64_section_data (sec);
a06ea964
NC		 4683 unsigned int newidx;
4684
4685 if (sec_data->map == NULL)
4686 {
cec5225b 4687 sec_data->map = bfd_malloc (sizeof (elf_aarch64_section_map));
a06ea964
NC		 4688 sec_data->mapcount = 0;
4689 sec_data->mapsize = 1;
4690 }
4691
4692 newidx = sec_data->mapcount++;
4693
4694 if (sec_data->mapcount > sec_data->mapsize)
4695 {
4696 sec_data->mapsize *= 2;
4697 sec_data->map = bfd_realloc_or_free
cec5225b 4698 (sec_data->map, sec_data->mapsize * sizeof (elf_aarch64_section_map));
a06ea964
NC		 4699 }
4700
4701 if (sec_data->map)
4702 {
4703 sec_data->map[newidx].vma = vma;
4704 sec_data->map[newidx].type = type;
4705 }
4706}
4707
4708
4709/* Initialise maps of insn/data for input BFDs. */
4710void
cec5225b 4711bfd_elfNN_aarch64_init_maps (bfd *abfd)
a06ea964
NC		 4712{
4713 Elf_Internal_Sym *isymbuf;
4714 Elf_Internal_Shdr *hdr;
4715 unsigned int i, localsyms;
4716
4717 /* Make sure that we are dealing with an AArch64 elf binary. */
4718 if (!is_aarch64_elf (abfd))
4719 return;
4720
4721 if ((abfd->flags & DYNAMIC) != 0)
68fcca92 4722 return;
a06ea964
NC		 4723
4724 hdr = &elf_symtab_hdr (abfd);
4725 localsyms = hdr->sh_info;
4726
4727 /* Obtain a buffer full of symbols for this BFD. The hdr->sh_info field
4728 should contain the number of local symbols, which should come before any
4729 global symbols. Mapping symbols are always local. */
4730 isymbuf = bfd_elf_get_elf_syms (abfd, hdr, localsyms, 0, NULL, NULL, NULL);
4731
4732 /* No internal symbols read? Skip this BFD. */
4733 if (isymbuf == NULL)
4734 return;
4735
4736 for (i = 0; i < localsyms; i++)
4737 {
4738 Elf_Internal_Sym *isym = &isymbuf[i];
4739 asection *sec = bfd_section_from_elf_index (abfd, isym->st_shndx);
4740 const char *name;
4741
4742 if (sec != NULL && ELF_ST_BIND (isym->st_info) == STB_LOCAL)
4743 {
4744 name = bfd_elf_string_from_elf_section (abfd,
4745 hdr->sh_link,
4746 isym->st_name);
4747
4748 if (bfd_is_aarch64_special_symbol_name
4749 (name, BFD_AARCH64_SPECIAL_SYM_TYPE_MAP))
cec5225b 4750 elfNN_aarch64_section_map_add (sec, name[1], isym->st_value);
a06ea964
NC		 4751 }
4752 }
4753}
4754
37c18eed
SD		 4755static void
4756setup_plt_values (struct bfd_link_info *link_info,
4757 aarch64_plt_type plt_type)
4758{
4759 struct elf_aarch64_link_hash_table *globals;
4760 globals = elf_aarch64_hash_table (link_info);
4761
1dbade74
SD		 4762 if (plt_type == PLT_BTI_PAC)
4763 {
68bb0359 4764 globals->plt0_entry = elfNN_aarch64_small_plt0_bti_entry;
1dbade74
SD		 4765
4766 /* Only in ET_EXEC we need PLTn with BTI. */
4767 if (bfd_link_pde (link_info))
4768 {
4769 globals->plt_entry_size = PLT_BTI_PAC_SMALL_ENTRY_SIZE;
4770 globals->plt_entry = elfNN_aarch64_small_plt_bti_pac_entry;
4771 }
4772 else
4773 {
4774 globals->plt_entry_size = PLT_PAC_SMALL_ENTRY_SIZE;
4775 globals->plt_entry = elfNN_aarch64_small_plt_pac_entry;
4776 }
4777 }
4778 else if (plt_type == PLT_BTI)
37c18eed 4779 {
37c18eed 4780 globals->plt0_entry = elfNN_aarch64_small_plt0_bti_entry;
37c18eed
SD		 4781
4782 /* Only in ET_EXEC we need PLTn with BTI. */
4783 if (bfd_link_pde (link_info))
4784 {
4785 globals->plt_entry_size = PLT_BTI_SMALL_ENTRY_SIZE;
4786 globals->plt_entry = elfNN_aarch64_small_plt_bti_entry;
4787 }
4788 }
1dbade74
SD		 4789 else if (plt_type == PLT_PAC)
4790 {
1dbade74
SD		 4791 globals->plt_entry_size = PLT_PAC_SMALL_ENTRY_SIZE;
4792 globals->plt_entry = elfNN_aarch64_small_plt_pac_entry;
4793 }
37c18eed
SD		 4794}
4795
a06ea964
NC		 4796/* Set option values needed during linking. */
4797void
cec5225b 4798bfd_elfNN_aarch64_set_options (struct bfd *output_bfd,
a06ea964
NC		 4799 struct bfd_link_info *link_info,
4800 int no_enum_warn,
68fcca92 4801 int no_wchar_warn, int pic_veneer,
4106101c 4802 int fix_erratum_835769,
739b5c9c 4803 erratum_84319_opts fix_erratum_843419,
37c18eed
SD		 4804 int no_apply_dynamic_relocs,
4805 aarch64_bti_pac_info bp_info)
a06ea964 4806{
cec5225b 4807 struct elf_aarch64_link_hash_table *globals;
a06ea964 4808
cec5225b 4809 globals = elf_aarch64_hash_table (link_info);
a06ea964 4810 globals->pic_veneer = pic_veneer;
68fcca92 4811 globals->fix_erratum_835769 = fix_erratum_835769;
739b5c9c
TC		 4812 /* If the default options are used, then ERRAT_ADR will be set by default
4813 which will enable the ADRP->ADR workaround for the erratum 843419
4814 workaround. */
4106101c 4815 globals->fix_erratum_843419 = fix_erratum_843419;
1f56df9d 4816 globals->no_apply_dynamic_relocs = no_apply_dynamic_relocs;
a06ea964
NC		 4817
4818 BFD_ASSERT (is_aarch64_elf (output_bfd));
4819 elf_aarch64_tdata (output_bfd)->no_enum_size_warning = no_enum_warn;
4820 elf_aarch64_tdata (output_bfd)->no_wchar_size_warning = no_wchar_warn;
37c18eed
SD		 4821
4822 switch (bp_info.bti_type)
4823 {
4824 case BTI_WARN:
4825 elf_aarch64_tdata (output_bfd)->no_bti_warn = 0;
4826 elf_aarch64_tdata (output_bfd)->gnu_and_prop
4827 |= GNU_PROPERTY_AARCH64_FEATURE_1_BTI;
4828 break;
4829
4830 default:
4831 break;
4832 }
4833 elf_aarch64_tdata (output_bfd)->plt_type = bp_info.plt_type;
4834 setup_plt_values (link_info, bp_info.plt_type);
a06ea964
NC		 4835}
4836
a06ea964
NC		 4837static bfd_vma
4838aarch64_calculate_got_entry_vma (struct elf_link_hash_entry *h,
cec5225b 4839 struct elf_aarch64_link_hash_table
a06ea964
NC		 4840 *globals, struct bfd_link_info *info,
4841 bfd_vma value, bfd *output_bfd,
4842 bfd_boolean *unresolved_reloc_p)
4843{
4844 bfd_vma off = (bfd_vma) - 1;
4845 asection *basegot = globals->root.sgot;
4846 bfd_boolean dyn = globals->root.dynamic_sections_created;
4847
4848 if (h != NULL)
4849 {
a6bb11b2 4850 BFD_ASSERT (basegot != NULL);
a06ea964
NC		 4851 off = h->got.offset;
4852 BFD_ASSERT (off != (bfd_vma) - 1);
0e1862bb
L		 4853 if (!WILL_CALL_FINISH_DYNAMIC_SYMBOL (dyn, bfd_link_pic (info), h)
4854 || (bfd_link_pic (info)
a06ea964
NC		 4855 && SYMBOL_REFERENCES_LOCAL (info, h))
4856 || (ELF_ST_VISIBILITY (h->other)
4857 && h->root.type == bfd_link_hash_undefweak))
4858 {
4859 /* This is actually a static link, or it is a -Bsymbolic link
4860 and the symbol is defined locally. We must initialize this
4861 entry in the global offset table. Since the offset must
a6bb11b2
YZ		 4862 always be a multiple of 8 (4 in the case of ILP32), we use
4863 the least significant bit to record whether we have
4864 initialized it already.
a06ea964
NC		 4865 When doing a dynamic link, we create a .rel(a).got relocation
4866 entry to initialize the value. This is done in the
4867 finish_dynamic_symbol routine. */
4868 if ((off & 1) != 0)
4869 off &= ~1;
4870 else
4871 {
cec5225b 4872 bfd_put_NN (output_bfd, value, basegot->contents + off);
a06ea964
NC		 4873 h->got.offset |= 1;
4874 }
4875 }
4876 else
4877 *unresolved_reloc_p = FALSE;
4878
4879 off = off + basegot->output_section->vma + basegot->output_offset;
4880 }
4881
4882 return off;
4883}
4884
4885/* Change R_TYPE to a more efficient access model where possible,
4886 return the new reloc type. */
4887
a6bb11b2
YZ		 4888static bfd_reloc_code_real_type
4889aarch64_tls_transition_without_check (bfd_reloc_code_real_type r_type,
a06ea964
NC		 4890 struct elf_link_hash_entry *h)
4891{
4892 bfd_boolean is_local = h == NULL;
a6bb11b2 4893
a06ea964
NC		 4894 switch (r_type)
4895 {
a6bb11b2 4896 case BFD_RELOC_AARCH64_TLSDESC_ADR_PAGE21:
ce336788 4897 case BFD_RELOC_AARCH64_TLSGD_ADR_PAGE21:
a6bb11b2
YZ		 4898 return (is_local
4899 ? BFD_RELOC_AARCH64_TLSLE_MOVW_TPREL_G1
4900 : BFD_RELOC_AARCH64_TLSIE_ADR_GOTTPREL_PAGE21);
4901
389b8029
MS		 4902 case BFD_RELOC_AARCH64_TLSDESC_ADR_PREL21:
4903 return (is_local
4904 ? BFD_RELOC_AARCH64_TLSLE_MOVW_TPREL_G0_NC
4905 : r_type);
4906
1ada945d
MS		 4907 case BFD_RELOC_AARCH64_TLSDESC_LD_PREL19:
4908 return (is_local
4909 ? BFD_RELOC_AARCH64_TLSLE_MOVW_TPREL_G1
4910 : BFD_RELOC_AARCH64_TLSIE_LD_GOTTPREL_PREL19);
4911
0484b454
RL		 4912 case BFD_RELOC_AARCH64_TLSDESC_LDR:
4913 return (is_local
4914 ? BFD_RELOC_AARCH64_TLSLE_MOVW_TPREL_G0_NC
4915 : BFD_RELOC_AARCH64_NONE);
4916
4917 case BFD_RELOC_AARCH64_TLSDESC_OFF_G0_NC:
4918 return (is_local
4919 ? BFD_RELOC_AARCH64_TLSLE_MOVW_TPREL_G1_NC
4920 : BFD_RELOC_AARCH64_TLSIE_MOVW_GOTTPREL_G0_NC);
4921
4922 case BFD_RELOC_AARCH64_TLSDESC_OFF_G1:
4923 return (is_local
4924 ? BFD_RELOC_AARCH64_TLSLE_MOVW_TPREL_G2
4925 : BFD_RELOC_AARCH64_TLSIE_MOVW_GOTTPREL_G1);
4926
a6bb11b2 4927 case BFD_RELOC_AARCH64_TLSDESC_LDNN_LO12_NC:
ce336788 4928 case BFD_RELOC_AARCH64_TLSGD_ADD_LO12_NC:
a6bb11b2
YZ		 4929 return (is_local
4930 ? BFD_RELOC_AARCH64_TLSLE_MOVW_TPREL_G0_NC
4931 : BFD_RELOC_AARCH64_TLSIE_LDNN_GOTTPREL_LO12_NC);
4932
4933 case BFD_RELOC_AARCH64_TLSIE_ADR_GOTTPREL_PAGE21:
4934 return is_local ? BFD_RELOC_AARCH64_TLSLE_MOVW_TPREL_G1 : r_type;
4935
4936 case BFD_RELOC_AARCH64_TLSIE_LDNN_GOTTPREL_LO12_NC:
4937 return is_local ? BFD_RELOC_AARCH64_TLSLE_MOVW_TPREL_G0_NC : r_type;
4938
043bf05a
MS		 4939 case BFD_RELOC_AARCH64_TLSIE_LD_GOTTPREL_PREL19:
4940 return r_type;
4941
3c12b054
MS		 4942 case BFD_RELOC_AARCH64_TLSGD_ADR_PREL21:
4943 return (is_local
4944 ? BFD_RELOC_AARCH64_TLSLE_ADD_TPREL_HI12
4945 : BFD_RELOC_AARCH64_TLSIE_LD_GOTTPREL_PREL19);
4946
0484b454 4947 case BFD_RELOC_AARCH64_TLSDESC_ADD:
f955cccf 4948 case BFD_RELOC_AARCH64_TLSDESC_ADD_LO12:
a6bb11b2 4949 case BFD_RELOC_AARCH64_TLSDESC_CALL:
a06ea964 4950 /* Instructions with these relocations will become NOPs. */
a6bb11b2
YZ		 4951 return BFD_RELOC_AARCH64_NONE;
4952
259364ad
JW		 4953 case BFD_RELOC_AARCH64_TLSLD_ADD_LO12_NC:
4954 case BFD_RELOC_AARCH64_TLSLD_ADR_PAGE21:
4955 case BFD_RELOC_AARCH64_TLSLD_ADR_PREL21:
4956 return is_local ? BFD_RELOC_AARCH64_NONE : r_type;
4957
ac734732
RL		 4958#if ARCH_SIZE == 64
4959 case BFD_RELOC_AARCH64_TLSGD_MOVW_G0_NC:
4960 return is_local
4961 ? BFD_RELOC_AARCH64_TLSLE_MOVW_TPREL_G1_NC
4962 : BFD_RELOC_AARCH64_TLSIE_MOVW_GOTTPREL_G0_NC;
4963
4964 case BFD_RELOC_AARCH64_TLSGD_MOVW_G1:
4965 return is_local
4966 ? BFD_RELOC_AARCH64_TLSLE_MOVW_TPREL_G2
4967 : BFD_RELOC_AARCH64_TLSIE_MOVW_GOTTPREL_G1;
4968#endif
4969
a6bb11b2
YZ		 4970 default:
4971 break;
a06ea964
NC		 4972 }
4973
4974 return r_type;
4975}
4976
4977static unsigned int
a6bb11b2 4978aarch64_reloc_got_type (bfd_reloc_code_real_type r_type)
a06ea964
NC		 4979{
4980 switch (r_type)
4981 {
a6bb11b2
YZ		 4982 case BFD_RELOC_AARCH64_ADR_GOT_PAGE:
4983 case BFD_RELOC_AARCH64_GOT_LD_PREL19:
7018c030 4984 case BFD_RELOC_AARCH64_LD32_GOTPAGE_LO14:
ce336788 4985 case BFD_RELOC_AARCH64_LD32_GOT_LO12_NC:
a2e1db00 4986 case BFD_RELOC_AARCH64_LD64_GOTOFF_LO15:
99ad26cb 4987 case BFD_RELOC_AARCH64_LD64_GOTPAGE_LO15:
ce336788 4988 case BFD_RELOC_AARCH64_LD64_GOT_LO12_NC:
dc8008f5 4989 case BFD_RELOC_AARCH64_MOVW_GOTOFF_G0_NC:
74a1bfe1 4990 case BFD_RELOC_AARCH64_MOVW_GOTOFF_G1:
a06ea964
NC		 4991 return GOT_NORMAL;
4992
ce336788 4993 case BFD_RELOC_AARCH64_TLSGD_ADD_LO12_NC:
a6bb11b2 4994 case BFD_RELOC_AARCH64_TLSGD_ADR_PAGE21:
3c12b054 4995 case BFD_RELOC_AARCH64_TLSGD_ADR_PREL21:
7ba7cfe4 4996 case BFD_RELOC_AARCH64_TLSGD_MOVW_G0_NC:
94facae3 4997 case BFD_RELOC_AARCH64_TLSGD_MOVW_G1:
73f925cc 4998 case BFD_RELOC_AARCH64_TLSLD_ADD_LO12_NC:
f69e4920 4999 case BFD_RELOC_AARCH64_TLSLD_ADR_PAGE21:
77a69ff8 5000 case BFD_RELOC_AARCH64_TLSLD_ADR_PREL21:
a06ea964
NC		 5001 return GOT_TLS_GD;
5002
0484b454 5003 case BFD_RELOC_AARCH64_TLSDESC_ADD:
f955cccf 5004 case BFD_RELOC_AARCH64_TLSDESC_ADD_LO12:
a6bb11b2 5005 case BFD_RELOC_AARCH64_TLSDESC_ADR_PAGE21:
389b8029 5006 case BFD_RELOC_AARCH64_TLSDESC_ADR_PREL21:
a6bb11b2 5007 case BFD_RELOC_AARCH64_TLSDESC_CALL:
a6bb11b2 5008 case BFD_RELOC_AARCH64_TLSDESC_LD32_LO12_NC:
f955cccf 5009 case BFD_RELOC_AARCH64_TLSDESC_LD64_LO12:
1ada945d 5010 case BFD_RELOC_AARCH64_TLSDESC_LD_PREL19:
0484b454
RL		 5011 case BFD_RELOC_AARCH64_TLSDESC_LDR:
5012 case BFD_RELOC_AARCH64_TLSDESC_OFF_G0_NC:
5013 case BFD_RELOC_AARCH64_TLSDESC_OFF_G1:
a06ea964
NC		 5014 return GOT_TLSDESC_GD;
5015
a6bb11b2 5016 case BFD_RELOC_AARCH64_TLSIE_ADR_GOTTPREL_PAGE21:
a6bb11b2 5017 case BFD_RELOC_AARCH64_TLSIE_LD32_GOTTPREL_LO12_NC:
ce336788 5018 case BFD_RELOC_AARCH64_TLSIE_LD64_GOTTPREL_LO12_NC:
043bf05a 5019 case BFD_RELOC_AARCH64_TLSIE_LD_GOTTPREL_PREL19:
3b957e5b
RL		 5020 case BFD_RELOC_AARCH64_TLSIE_MOVW_GOTTPREL_G0_NC:
5021 case BFD_RELOC_AARCH64_TLSIE_MOVW_GOTTPREL_G1:
a06ea964
NC		 5022 return GOT_TLS_IE;
5023
a6bb11b2
YZ		 5024 default:
5025 break;
a06ea964
NC		 5026 }
5027 return GOT_UNKNOWN;
5028}
5029
5030static bfd_boolean
5031aarch64_can_relax_tls (bfd *input_bfd,
5032 struct bfd_link_info *info,
a6bb11b2 5033 bfd_reloc_code_real_type r_type,
a06ea964
NC		 5034 struct elf_link_hash_entry *h,
5035 unsigned long r_symndx)
5036{
5037 unsigned int symbol_got_type;
5038 unsigned int reloc_got_type;
5039
9331eea1 5040 if (! IS_AARCH64_TLS_RELAX_RELOC (r_type))
a06ea964
NC		 5041 return FALSE;
5042
cec5225b 5043 symbol_got_type = elfNN_aarch64_symbol_got_type (h, input_bfd, r_symndx);
a06ea964
NC		 5044 reloc_got_type = aarch64_reloc_got_type (r_type);
5045
5046 if (symbol_got_type == GOT_TLS_IE && GOT_TLS_GD_ANY_P (reloc_got_type))
5047 return TRUE;
5048
6dda7875 5049 if (!bfd_link_executable (info))
a06ea964
NC		 5050 return FALSE;
5051
5052 if (h && h->root.type == bfd_link_hash_undefweak)
5053 return FALSE;
5054
5055 return TRUE;
5056}
5057
a6bb11b2
YZ		 5058/* Given the relocation code R_TYPE, return the relaxed bfd reloc
5059 enumerator. */
5060
5061static bfd_reloc_code_real_type
a06ea964
NC		 5062aarch64_tls_transition (bfd *input_bfd,
5063 struct bfd_link_info *info,
5064 unsigned int r_type,
5065 struct elf_link_hash_entry *h,
5066 unsigned long r_symndx)
5067{
a6bb11b2 5068 bfd_reloc_code_real_type bfd_r_type
0aa13fee 5069 = elfNN_aarch64_bfd_reloc_from_type (input_bfd, r_type);
a06ea964 5070
a6bb11b2
YZ		 5071 if (! aarch64_can_relax_tls (input_bfd, info, bfd_r_type, h, r_symndx))
5072 return bfd_r_type;
5073
5074 return aarch64_tls_transition_without_check (bfd_r_type, h);
a06ea964
NC		 5075}
5076
5077/* Return the base VMA address which should be subtracted from real addresses
a6bb11b2 5078 when resolving R_AARCH64_TLS_DTPREL relocation. */
a06ea964
NC		 5079
5080static bfd_vma
5081dtpoff_base (struct bfd_link_info *info)
5082{
5083 /* If tls_sec is NULL, we should have signalled an error already. */
5084 BFD_ASSERT (elf_hash_table (info)->tls_sec != NULL);
5085 return elf_hash_table (info)->tls_sec->vma;
5086}
5087
a06ea964
NC		 5088/* Return the base VMA address which should be subtracted from real addresses
5089 when resolving R_AARCH64_TLS_GOTTPREL64 relocations. */
5090
5091static bfd_vma
5092tpoff_base (struct bfd_link_info *info)
5093{
5094 struct elf_link_hash_table *htab = elf_hash_table (info);
5095
5096 /* If tls_sec is NULL, we should have signalled an error already. */
ac21917f 5097 BFD_ASSERT (htab->tls_sec != NULL);
a06ea964
NC		 5098
5099 bfd_vma base = align_power ((bfd_vma) TCB_SIZE,
5100 htab->tls_sec->alignment_power);
5101 return htab->tls_sec->vma - base;
5102}
5103
5104static bfd_vma *
5105symbol_got_offset_ref (bfd *input_bfd, struct elf_link_hash_entry *h,
5106 unsigned long r_symndx)
5107{
5108 /* Calculate the address of the GOT entry for symbol
5109 referred to in h. */
5110 if (h != NULL)
5111 return &h->got.offset;
5112 else
5113 {
5114 /* local symbol */
5115 struct elf_aarch64_local_symbol *l;
5116
cec5225b 5117 l = elf_aarch64_locals (input_bfd);
a06ea964
NC		 5118 return &l[r_symndx].got_offset;
5119 }
5120}
5121
5122static void
5123symbol_got_offset_mark (bfd *input_bfd, struct elf_link_hash_entry *h,
5124 unsigned long r_symndx)
5125{
5126 bfd_vma *p;
5127 p = symbol_got_offset_ref (input_bfd, h, r_symndx);
5128 *p |= 1;
5129}
5130
5131static int
5132symbol_got_offset_mark_p (bfd *input_bfd, struct elf_link_hash_entry *h,
5133 unsigned long r_symndx)
5134{
5135 bfd_vma value;
5136 value = * symbol_got_offset_ref (input_bfd, h, r_symndx);
5137 return value & 1;
5138}
5139
5140static bfd_vma
5141symbol_got_offset (bfd *input_bfd, struct elf_link_hash_entry *h,
5142 unsigned long r_symndx)
5143{
5144 bfd_vma value;
5145 value = * symbol_got_offset_ref (input_bfd, h, r_symndx);
5146 value &= ~1;
5147 return value;
5148}
5149
5150static bfd_vma *
5151symbol_tlsdesc_got_offset_ref (bfd *input_bfd, struct elf_link_hash_entry *h,
5152 unsigned long r_symndx)
5153{
5154 /* Calculate the address of the GOT entry for symbol
5155 referred to in h. */
5156 if (h != NULL)
5157 {
cec5225b
YZ		 5158 struct elf_aarch64_link_hash_entry *eh;
5159 eh = (struct elf_aarch64_link_hash_entry *) h;
a06ea964
NC		 5160 return &eh->tlsdesc_got_jump_table_offset;
5161 }
5162 else
5163 {
5164 /* local symbol */
5165 struct elf_aarch64_local_symbol *l;
5166
cec5225b 5167 l = elf_aarch64_locals (input_bfd);
a06ea964
NC		 5168 return &l[r_symndx].tlsdesc_got_jump_table_offset;
5169 }
5170}
5171
5172static void
5173symbol_tlsdesc_got_offset_mark (bfd *input_bfd, struct elf_link_hash_entry *h,
5174 unsigned long r_symndx)
5175{
5176 bfd_vma *p;
5177 p = symbol_tlsdesc_got_offset_ref (input_bfd, h, r_symndx);
5178 *p |= 1;
5179}
5180
5181static int
5182symbol_tlsdesc_got_offset_mark_p (bfd *input_bfd,
5183 struct elf_link_hash_entry *h,
5184 unsigned long r_symndx)
5185{
5186 bfd_vma value;
5187 value = * symbol_tlsdesc_got_offset_ref (input_bfd, h, r_symndx);
5188 return value & 1;
5189}
5190
5191static bfd_vma
5192symbol_tlsdesc_got_offset (bfd *input_bfd, struct elf_link_hash_entry *h,
5193 unsigned long r_symndx)
5194{
5195 bfd_vma value;
5196 value = * symbol_tlsdesc_got_offset_ref (input_bfd, h, r_symndx);
5197 value &= ~1;
5198 return value;
5199}
5200
68fcca92
JW		 5201/* Data for make_branch_to_erratum_835769_stub(). */
5202
5203struct erratum_835769_branch_to_stub_data
5204{
4106101c 5205 struct bfd_link_info *info;
68fcca92
JW		 5206 asection *output_section;
5207 bfd_byte *contents;
5208};
5209
5210/* Helper to insert branches to erratum 835769 stubs in the right
5211 places for a particular section. */
5212
5213static bfd_boolean
5214make_branch_to_erratum_835769_stub (struct bfd_hash_entry *gen_entry,
5215 void *in_arg)
5216{
5217 struct elf_aarch64_stub_hash_entry *stub_entry;
5218 struct erratum_835769_branch_to_stub_data *data;
5219 bfd_byte *contents;
5220 unsigned long branch_insn = 0;
5221 bfd_vma veneered_insn_loc, veneer_entry_loc;
5222 bfd_signed_vma branch_offset;
5223 unsigned int target;
5224 bfd *abfd;
5225
5226 stub_entry = (struct elf_aarch64_stub_hash_entry *) gen_entry;
5227 data = (struct erratum_835769_branch_to_stub_data *) in_arg;
5228
5229 if (stub_entry->target_section != data->output_section
5230 || stub_entry->stub_type != aarch64_stub_erratum_835769_veneer)
5231 return TRUE;
5232
5233 contents = data->contents;
5234 veneered_insn_loc = stub_entry->target_section->output_section->vma
5235 + stub_entry->target_section->output_offset
5236 + stub_entry->target_value;
5237 veneer_entry_loc = stub_entry->stub_sec->output_section->vma
5238 + stub_entry->stub_sec->output_offset
5239 + stub_entry->stub_offset;
5240 branch_offset = veneer_entry_loc - veneered_insn_loc;
5241
5242 abfd = stub_entry->target_section->owner;
5243 if (!aarch64_valid_branch_p (veneer_entry_loc, veneered_insn_loc))
4eca0228 5244 _bfd_error_handler
90b6238f 5245 (_("%pB: error: erratum 835769 stub out "
4eca0228 5246 "of range (input file too large)"), abfd);
68fcca92
JW		 5247
5248 target = stub_entry->target_value;
5249 branch_insn = 0x14000000;
5250 branch_offset >>= 2;
5251 branch_offset &= 0x3ffffff;
5252 branch_insn |= branch_offset;
5253 bfd_putl32 (branch_insn, &contents[target]);
5254
5255 return TRUE;
5256}
5257
4106101c
MS		 5258
5259static bfd_boolean
5260_bfd_aarch64_erratum_843419_branch_to_stub (struct bfd_hash_entry *gen_entry,
5261 void *in_arg)
5262{
5263 struct elf_aarch64_stub_hash_entry *stub_entry
5264 = (struct elf_aarch64_stub_hash_entry *) gen_entry;
5265 struct erratum_835769_branch_to_stub_data *data
5266 = (struct erratum_835769_branch_to_stub_data *) in_arg;
5267 struct bfd_link_info *info;
5268 struct elf_aarch64_link_hash_table *htab;
5269 bfd_byte *contents;
5270 asection *section;
5271 bfd *abfd;
5272 bfd_vma place;
5273 uint32_t insn;
5274
5275 info = data->info;
5276 contents = data->contents;
5277 section = data->output_section;
5278
5279 htab = elf_aarch64_hash_table (info);
5280
5281 if (stub_entry->target_section != section
5282 || stub_entry->stub_type != aarch64_stub_erratum_843419_veneer)
5283 return TRUE;
5284
739b5c9c
TC		 5285 BFD_ASSERT (((htab->fix_erratum_843419 & ERRAT_ADRP) && stub_entry->stub_sec)
5286 || (htab->fix_erratum_843419 & ERRAT_ADR));
5287
5288 /* Only update the stub section if we have one. We should always have one if
5289 we're allowed to use the ADRP errata workaround, otherwise it is not
5290 required. */
5291 if (stub_entry->stub_sec)
5292 {
5293 insn = bfd_getl32 (contents + stub_entry->target_value);
5294 bfd_putl32 (insn,
5295 stub_entry->stub_sec->contents + stub_entry->stub_offset);
5296 }
4106101c
MS		 5297
5298 place = (section->output_section->vma + section->output_offset
5299 + stub_entry->adrp_offset);
5300 insn = bfd_getl32 (contents + stub_entry->adrp_offset);
5301
9fca35fc 5302 if (!_bfd_aarch64_adrp_p (insn))
4106101c
MS		 5303 abort ();
5304
5305 bfd_signed_vma imm =
5306 (_bfd_aarch64_sign_extend
5307 ((bfd_vma) _bfd_aarch64_decode_adrp_imm (insn) << 12, 33)
5308 - (place & 0xfff));
5309
739b5c9c 5310 if ((htab->fix_erratum_843419 & ERRAT_ADR)
4106101c
MS		 5311 && (imm >= AARCH64_MIN_ADRP_IMM && imm <= AARCH64_MAX_ADRP_IMM))
5312 {
5313 insn = (_bfd_aarch64_reencode_adr_imm (AARCH64_ADR_OP, imm)
5314 | AARCH64_RT (insn));
5315 bfd_putl32 (insn, contents + stub_entry->adrp_offset);
739b5c9c
TC		 5316 /* Stub is not needed, don't map it out. */
5317 stub_entry->stub_type = aarch64_stub_none;
4106101c 5318 }
739b5c9c 5319 else if (htab->fix_erratum_843419 & ERRAT_ADRP)
4106101c
MS		 5320 {
5321 bfd_vma veneered_insn_loc;
5322 bfd_vma veneer_entry_loc;
5323 bfd_signed_vma branch_offset;
5324 uint32_t branch_insn;
5325
5326 veneered_insn_loc = stub_entry->target_section->output_section->vma
5327 + stub_entry->target_section->output_offset
5328 + stub_entry->target_value;
5329 veneer_entry_loc = stub_entry->stub_sec->output_section->vma
5330 + stub_entry->stub_sec->output_offset
5331 + stub_entry->stub_offset;
5332 branch_offset = veneer_entry_loc - veneered_insn_loc;
5333
5334 abfd = stub_entry->target_section->owner;
5335 if (!aarch64_valid_branch_p (veneer_entry_loc, veneered_insn_loc))
4eca0228 5336 _bfd_error_handler
90b6238f 5337 (_("%pB: error: erratum 843419 stub out "
4106101c
MS		 5338 "of range (input file too large)"), abfd);
5339
5340 branch_insn = 0x14000000;
5341 branch_offset >>= 2;
5342 branch_offset &= 0x3ffffff;
5343 branch_insn |= branch_offset;
5344 bfd_putl32 (branch_insn, contents + stub_entry->target_value);
5345 }
739b5c9c
TC		 5346 else
5347 {
5348 abfd = stub_entry->target_section->owner;
5349 _bfd_error_handler
64672071 5350 (_("%pB: error: erratum 843419 immediate 0x%" BFD_VMA_FMT "x "
739b5c9c
TC		 5351 "out of range for ADR (input file too large) and "
5352 "--fix-cortex-a53-843419=adr used. Run the linker with "
5353 "--fix-cortex-a53-843419=full instead"), abfd, imm);
5354 bfd_set_error (bfd_error_bad_value);
5355 /* This function is called inside a hashtable traversal and the error
5356 handlers called above turn into non-fatal errors. Which means this
5357 case ld returns an exit code 0 and also produces a broken object file.
5358 To prevent this, issue a hard abort. */
5359 BFD_FAIL ();
5360 }
4106101c
MS		 5361 return TRUE;
5362}
5363
5364
68fcca92
JW		 5365static bfd_boolean
5366elfNN_aarch64_write_section (bfd *output_bfd ATTRIBUTE_UNUSED,
5367 struct bfd_link_info *link_info,
5368 asection *sec,
5369 bfd_byte *contents)
5370
5371{
5372 struct elf_aarch64_link_hash_table *globals =
f872121a 5373 elf_aarch64_hash_table (link_info);
68fcca92
JW		 5374
5375 if (globals == NULL)
5376 return FALSE;
5377
5378 /* Fix code to point to erratum 835769 stubs. */
5379 if (globals->fix_erratum_835769)
5380 {
5381 struct erratum_835769_branch_to_stub_data data;
5382
4106101c 5383 data.info = link_info;
68fcca92
JW		 5384 data.output_section = sec;
5385 data.contents = contents;
5386 bfd_hash_traverse (&globals->stub_hash_table,
5387 make_branch_to_erratum_835769_stub, &data);
5388 }
5389
4106101c
MS		 5390 if (globals->fix_erratum_843419)
5391 {
5392 struct erratum_835769_branch_to_stub_data data;
5393
5394 data.info = link_info;
5395 data.output_section = sec;
5396 data.contents = contents;
5397 bfd_hash_traverse (&globals->stub_hash_table,
5398 _bfd_aarch64_erratum_843419_branch_to_stub, &data);
5399 }
5400
68fcca92
JW		 5401 return FALSE;
5402}
5403
2aff25ba
JW		 5404/* Return TRUE if RELOC is a relocation against the base of GOT table. */
5405
5406static bfd_boolean
5407aarch64_relocation_aginst_gp_p (bfd_reloc_code_real_type reloc)
5408{
5409 return (reloc == BFD_RELOC_AARCH64_LD32_GOTPAGE_LO14
5410 || reloc == BFD_RELOC_AARCH64_LD64_GOTPAGE_LO15
5411 || reloc == BFD_RELOC_AARCH64_LD64_GOTOFF_LO15
5412 || reloc == BFD_RELOC_AARCH64_MOVW_GOTOFF_G0_NC
5413 || reloc == BFD_RELOC_AARCH64_MOVW_GOTOFF_G1);
5414}
5415
4e7fbb34
JW		 5416/* Perform a relocation as part of a final link. The input relocation type
5417 should be TLS relaxed. */
5418
a06ea964 5419static bfd_reloc_status_type
cec5225b 5420elfNN_aarch64_final_link_relocate (reloc_howto_type *howto,
a06ea964
NC		 5421 bfd *input_bfd,
5422 bfd *output_bfd,
5423 asection *input_section,
5424 bfd_byte *contents,
5425 Elf_Internal_Rela *rel,
5426 bfd_vma value,
5427 struct bfd_link_info *info,
5428 asection *sym_sec,
5429 struct elf_link_hash_entry *h,
5430 bfd_boolean *unresolved_reloc_p,
5431 bfd_boolean save_addend,
1419bbe5
WN		 5432 bfd_vma *saved_addend,
5433 Elf_Internal_Sym *sym)
a06ea964 5434{
1419bbe5 5435 Elf_Internal_Shdr *symtab_hdr;
a06ea964 5436 unsigned int r_type = howto->type;
a6bb11b2
YZ		 5437 bfd_reloc_code_real_type bfd_r_type
5438 = elfNN_aarch64_bfd_reloc_from_howto (howto);
a06ea964
NC		 5439 unsigned long r_symndx;
5440 bfd_byte *hit_data = contents + rel->r_offset;
96d01d93 5441 bfd_vma place, off, got_entry_addr = 0;
a06ea964 5442 bfd_signed_vma signed_addend;
cec5225b 5443 struct elf_aarch64_link_hash_table *globals;
a06ea964 5444 bfd_boolean weak_undef_p;
ff07562f 5445 bfd_boolean relative_reloc;
b53b1bed 5446 asection *base_got;
ff07562f 5447 bfd_vma orig_value = value;
ddb7fd0f 5448 bfd_boolean resolved_to_zero;
0c1ded8d 5449 bfd_boolean abs_symbol_p;
a06ea964 5450
cec5225b 5451 globals = elf_aarch64_hash_table (info);
a06ea964 5452
1419bbe5
WN		 5453 symtab_hdr = &elf_symtab_hdr (input_bfd);
5454
a06ea964
NC		 5455 BFD_ASSERT (is_aarch64_elf (input_bfd));
5456
cec5225b 5457 r_symndx = ELFNN_R_SYM (rel->r_info);
a06ea964 5458
a06ea964
NC		 5459 place = input_section->output_section->vma
5460 + input_section->output_offset + rel->r_offset;
5461
5462 /* Get addend, accumulating the addend for consecutive relocs
5463 which refer to the same offset. */
5464 signed_addend = saved_addend ? *saved_addend : 0;
5465 signed_addend += rel->r_addend;
5466
5467 weak_undef_p = (h ? h->root.type == bfd_link_hash_undefweak
5468 : bfd_is_und_section (sym_sec));
c691de6a 5469 abs_symbol_p = h != NULL && bfd_is_abs_symbol (&h->root);
0c1ded8d 5470
a6bb11b2 5471
1419bbe5
WN		 5472 /* Since STT_GNU_IFUNC symbol must go through PLT, we handle
5473 it here if it is defined in a non-shared object. */
5474 if (h != NULL
5475 && h->type == STT_GNU_IFUNC
5476 && h->def_regular)
5477 {
5478 asection *plt;
5479 const char *name;
99ad26cb 5480 bfd_vma addend = 0;
1419bbe5 5481
545bc2b3
SN		 5482 if ((input_section->flags & SEC_ALLOC) == 0)
5483 {
f657f8c4
NC		 5484 /* If this is a SHT_NOTE section without SHF_ALLOC, treat
5485 STT_GNU_IFUNC symbol as STT_FUNC. */
5486 if (elf_section_type (input_section) == SHT_NOTE)
5487 goto skip_ifunc;
5488
545bc2b3
SN		 5489 /* Dynamic relocs are not propagated for SEC_DEBUGGING
5490 sections because such sections are not SEC_ALLOC and
5491 thus ld.so will not process them. */
5492 if ((input_section->flags & SEC_DEBUGGING) != 0)
5493 return bfd_reloc_ok;
5494
5495 if (h->root.root.string)
5496 name = h->root.root.string;
5497 else
5498 name = bfd_elf_sym_name (input_bfd, symtab_hdr, sym, NULL);
5499 _bfd_error_handler
5500 /* xgettext:c-format */
2dcf00ce
AM		 5501 (_("%pB(%pA+%#" PRIx64 "): "
5502 "unresolvable %s relocation against symbol `%s'"),
5503 input_bfd, input_section, (uint64_t) rel->r_offset,
5504 howto->name, name);
545bc2b3 5505 bfd_set_error (bfd_error_bad_value);
1d75a8e2 5506 return bfd_reloc_notsupported;
545bc2b3
SN		 5507 }
5508 else if (h->plt.offset == (bfd_vma) -1)
5509 goto bad_ifunc_reloc;
1419bbe5
WN		 5510
5511 /* STT_GNU_IFUNC symbol must go through PLT. */
5512 plt = globals->root.splt ? globals->root.splt : globals->root.iplt;
5513 value = (plt->output_section->vma + plt->output_offset + h->plt.offset);
5514
5515 switch (bfd_r_type)
5516 {
5517 default:
dc1e8a47 5518 bad_ifunc_reloc:
1419bbe5
WN		 5519 if (h->root.root.string)
5520 name = h->root.root.string;
5521 else
5522 name = bfd_elf_sym_name (input_bfd, symtab_hdr, sym,
5523 NULL);
4eca0228 5524 _bfd_error_handler
695344c0 5525 /* xgettext:c-format */
871b3ab2 5526 (_("%pB: relocation %s against STT_GNU_IFUNC "
1419bbe5
WN		 5527 "symbol `%s' isn't handled by %s"), input_bfd,
5528 howto->name, name, __FUNCTION__);
5529 bfd_set_error (bfd_error_bad_value);
1d75a8e2 5530 return bfd_reloc_notsupported;
1419bbe5
WN		 5531
5532 case BFD_RELOC_AARCH64_NN:
5533 if (rel->r_addend != 0)
5534 {
5535 if (h->root.root.string)
5536 name = h->root.root.string;
5537 else
5538 name = bfd_elf_sym_name (input_bfd, symtab_hdr,
5539 sym, NULL);
4eca0228 5540 _bfd_error_handler
695344c0 5541 /* xgettext:c-format */
871b3ab2 5542 (_("%pB: relocation %s against STT_GNU_IFUNC "
2dcf00ce
AM		 5543 "symbol `%s' has non-zero addend: %" PRId64),
5544 input_bfd, howto->name, name, (int64_t) rel->r_addend);
1419bbe5 5545 bfd_set_error (bfd_error_bad_value);
1d75a8e2 5546 return bfd_reloc_notsupported;
1419bbe5
WN		 5547 }
5548
5549 /* Generate dynamic relocation only when there is a
5550 non-GOT reference in a shared object. */
0e1862bb 5551 if (bfd_link_pic (info) && h->non_got_ref)
1419bbe5
WN		 5552 {
5553 Elf_Internal_Rela outrel;
5554 asection *sreloc;
5555
5556 /* Need a dynamic relocation to get the real function
5557 address. */
5558 outrel.r_offset = _bfd_elf_section_offset (output_bfd,
5559 info,
5560 input_section,
5561 rel->r_offset);
5562 if (outrel.r_offset == (bfd_vma) -1
5563 || outrel.r_offset == (bfd_vma) -2)
5564 abort ();
5565
5566 outrel.r_offset += (input_section->output_section->vma
5567 + input_section->output_offset);
5568
5569 if (h->dynindx == -1
5570 || h->forced_local
0e1862bb 5571 || bfd_link_executable (info))
1419bbe5
WN		 5572 {
5573 /* This symbol is resolved locally. */
5574 outrel.r_info = ELFNN_R_INFO (0, AARCH64_R (IRELATIVE));
5575 outrel.r_addend = (h->root.u.def.value
5576 + h->root.u.def.section->output_section->vma
5577 + h->root.u.def.section->output_offset);
5578 }
5579 else
5580 {
5581 outrel.r_info = ELFNN_R_INFO (h->dynindx, r_type);
5582 outrel.r_addend = 0;
5583 }
5584
5585 sreloc = globals->root.irelifunc;
5586 elf_append_rela (output_bfd, sreloc, &outrel);
5587
5588 /* If this reloc is against an external symbol, we
5589 do not want to fiddle with the addend. Otherwise,
5590 we need to include the symbol value so that it
5591 becomes an addend for the dynamic reloc. For an
5592 internal symbol, we have updated addend. */
5593 return bfd_reloc_ok;
5594 }
5595 /* FALLTHROUGH */
1419bbe5 5596 case BFD_RELOC_AARCH64_CALL26:
ce336788 5597 case BFD_RELOC_AARCH64_JUMP26:
652afeef
TC		 5598 value = _bfd_aarch64_elf_resolve_relocation (input_bfd, bfd_r_type,
5599 place, value,
1419bbe5
WN		 5600 signed_addend,
5601 weak_undef_p);
5602 return _bfd_aarch64_elf_put_addend (input_bfd, hit_data, bfd_r_type,
5603 howto, value);
1419bbe5
WN		 5604 case BFD_RELOC_AARCH64_ADR_GOT_PAGE:
5605 case BFD_RELOC_AARCH64_GOT_LD_PREL19:
7018c030 5606 case BFD_RELOC_AARCH64_LD32_GOTPAGE_LO14:
ce336788 5607 case BFD_RELOC_AARCH64_LD32_GOT_LO12_NC:
99ad26cb 5608 case BFD_RELOC_AARCH64_LD64_GOTPAGE_LO15:
dc8008f5 5609 case BFD_RELOC_AARCH64_MOVW_GOTOFF_G0_NC:
74a1bfe1 5610 case BFD_RELOC_AARCH64_MOVW_GOTOFF_G1:
a2e1db00 5611 case BFD_RELOC_AARCH64_LD64_GOTOFF_LO15:
ce336788 5612 case BFD_RELOC_AARCH64_LD64_GOT_LO12_NC:
1419bbe5
WN		 5613 base_got = globals->root.sgot;
5614 off = h->got.offset;
5615
5616 if (base_got == NULL)
5617 abort ();
5618
5619 if (off == (bfd_vma) -1)
5620 {
5621 bfd_vma plt_index;
5622
5623 /* We can't use h->got.offset here to save state, or
5624 even just remember the offset, as finish_dynamic_symbol
5625 would use that as offset into .got. */
5626
5627 if (globals->root.splt != NULL)
5628 {
b1ee0cc4
WN		 5629 plt_index = ((h->plt.offset - globals->plt_header_size) /
5630 globals->plt_entry_size);
1419bbe5
WN		 5631 off = (plt_index + 3) * GOT_ENTRY_SIZE;
5632 base_got = globals->root.sgotplt;
5633 }
5634 else
5635 {
5636 plt_index = h->plt.offset / globals->plt_entry_size;
5637 off = plt_index * GOT_ENTRY_SIZE;
5638 base_got = globals->root.igotplt;
5639 }
5640
5641 if (h->dynindx == -1
5642 || h->forced_local
5643 || info->symbolic)
5644 {
5645 /* This references the local definition. We must
5646 initialize this entry in the global offset table.
5647 Since the offset must always be a multiple of 8,
5648 we use the least significant bit to record
5649 whether we have initialized it already.
5650
5651 When doing a dynamic link, we create a .rela.got
5652 relocation entry to initialize the value. This
5653 is done in the finish_dynamic_symbol routine. */
5654 if ((off & 1) != 0)
5655 off &= ~1;
5656 else
5657 {
5658 bfd_put_NN (output_bfd, value,
5659 base_got->contents + off);
5660 /* Note that this is harmless as -1 | 1 still is -1. */
5661 h->got.offset |= 1;
5662 }
5663 }
5664 value = (base_got->output_section->vma
5665 + base_got->output_offset + off);
5666 }
5667 else
5668 value = aarch64_calculate_got_entry_vma (h, globals, info,
5669 value, output_bfd,
5670 unresolved_reloc_p);
a0becb89 5671
2aff25ba
JW		 5672 if (aarch64_relocation_aginst_gp_p (bfd_r_type))
5673 addend = (globals->root.sgot->output_section->vma
5674 + globals->root.sgot->output_offset);
a0becb89 5675
652afeef
TC		 5676 value = _bfd_aarch64_elf_resolve_relocation (input_bfd, bfd_r_type,
5677 place, value,
99ad26cb 5678 addend, weak_undef_p);
1419bbe5 5679 return _bfd_aarch64_elf_put_addend (input_bfd, hit_data, bfd_r_type, howto, value);
1419bbe5 5680 case BFD_RELOC_AARCH64_ADD_LO12:
ce336788 5681 case BFD_RELOC_AARCH64_ADR_HI21_PCREL:
1419bbe5
WN		 5682 break;
5683 }
5684 }
5685
f657f8c4 5686 skip_ifunc:
ddb7fd0f
L		 5687 resolved_to_zero = (h != NULL
5688 && UNDEFWEAK_NO_DYNAMIC_RELOC (info, h));
5689
a6bb11b2 5690 switch (bfd_r_type)
a06ea964 5691 {
a6bb11b2 5692 case BFD_RELOC_AARCH64_NONE:
0484b454 5693 case BFD_RELOC_AARCH64_TLSDESC_ADD:
a6bb11b2 5694 case BFD_RELOC_AARCH64_TLSDESC_CALL:
0484b454 5695 case BFD_RELOC_AARCH64_TLSDESC_LDR:
a06ea964
NC		 5696 *unresolved_reloc_p = FALSE;
5697 return bfd_reloc_ok;
5698
a6bb11b2 5699 case BFD_RELOC_AARCH64_NN:
a06ea964
NC		 5700
5701 /* When generating a shared object or relocatable executable, these
07d6d2b8
AM		 5702 relocations are copied into the output file to be resolved at
5703 run time. */
6353d82b
JW		 5704 if (((bfd_link_pic (info)
5705 || globals->root.is_relocatable_executable)
5706 && (input_section->flags & SEC_ALLOC)
5707 && (h == NULL
ddb7fd0f
L		 5708 || (ELF_ST_VISIBILITY (h->other) == STV_DEFAULT
5709 && !resolved_to_zero)
6353d82b
JW		 5710 || h->root.type != bfd_link_hash_undefweak))
5711 /* Or we are creating an executable, we may need to keep relocations
5712 for symbols satisfied by a dynamic library if we manage to avoid
5713 copy relocs for the symbol. */
5714 || (ELIMINATE_COPY_RELOCS
5715 && !bfd_link_pic (info)
5716 && h != NULL
5717 && (input_section->flags & SEC_ALLOC)
5718 && h->dynindx != -1
5719 && !h->non_got_ref
5720 && ((h->def_dynamic
5721 && !h->def_regular)
5722 || h->root.type == bfd_link_hash_undefweak
5723 || h->root.type == bfd_link_hash_undefined)))
a06ea964
NC		 5724 {
5725 Elf_Internal_Rela outrel;
5726 bfd_byte *loc;
5727 bfd_boolean skip, relocate;
5728 asection *sreloc;
5729
5730 *unresolved_reloc_p = FALSE;
5731
a06ea964
NC		 5732 skip = FALSE;
5733 relocate = FALSE;
5734
5735 outrel.r_addend = signed_addend;
5736 outrel.r_offset =
5737 _bfd_elf_section_offset (output_bfd, info, input_section,
5738 rel->r_offset);
5739 if (outrel.r_offset == (bfd_vma) - 1)
5740 skip = TRUE;
5741 else if (outrel.r_offset == (bfd_vma) - 2)
5742 {
5743 skip = TRUE;
5744 relocate = TRUE;
5745 }
0c1ded8d
RL		 5746 else if (abs_symbol_p)
5747 {
5748 /* Local absolute symbol. */
5749 skip = (h->forced_local || (h->dynindx == -1));
5750 relocate = skip;
5751 }
a06ea964
NC		 5752
5753 outrel.r_offset += (input_section->output_section->vma
5754 + input_section->output_offset);
5755
5756 if (skip)
5757 memset (&outrel, 0, sizeof outrel);
5758 else if (h != NULL
5759 && h->dynindx != -1
0e1862bb 5760 && (!bfd_link_pic (info)
0c1ded8d 5761 || !(bfd_link_pie (info) || SYMBOLIC_BIND (info, h))
0e1862bb 5762 || !h->def_regular))
cec5225b 5763 outrel.r_info = ELFNN_R_INFO (h->dynindx, r_type);
a06ea964
NC		 5764 else
5765 {
5766 int symbol;
5767
5768 /* On SVR4-ish systems, the dynamic loader cannot
5769 relocate the text and data segments independently,
5770 so the symbol does not matter. */
5771 symbol = 0;
1f56df9d 5772 relocate = globals->no_apply_dynamic_relocs ? FALSE : TRUE;
a6bb11b2 5773 outrel.r_info = ELFNN_R_INFO (symbol, AARCH64_R (RELATIVE));
a06ea964
NC		 5774 outrel.r_addend += value;
5775 }
5776
1419bbe5
WN		 5777 sreloc = elf_section_data (input_section)->sreloc;
5778 if (sreloc == NULL || sreloc->contents == NULL)
5779 return bfd_reloc_notsupported;
5780
5781 loc = sreloc->contents + sreloc->reloc_count++ * RELOC_SIZE (globals);
cec5225b 5782 bfd_elfNN_swap_reloca_out (output_bfd, &outrel, loc);
a06ea964 5783
1419bbe5 5784 if (sreloc->reloc_count * RELOC_SIZE (globals) > sreloc->size)
a06ea964
NC		 5785 {
5786 /* Sanity to check that we have previously allocated
5787 sufficient space in the relocation section for the
5788 number of relocations we actually want to emit. */
5789 abort ();
5790 }
5791
5792 /* If this reloc is against an external symbol, we do not want to
5793 fiddle with the addend. Otherwise, we need to include the symbol
5794 value so that it becomes an addend for the dynamic reloc. */
5795 if (!relocate)
5796 return bfd_reloc_ok;
5797
5798 return _bfd_final_link_relocate (howto, input_bfd, input_section,
5799 contents, rel->r_offset, value,
5800 signed_addend);
5801 }
5802 else
5803 value += signed_addend;
5804 break;
5805
a6bb11b2 5806 case BFD_RELOC_AARCH64_CALL26:
ce336788 5807 case BFD_RELOC_AARCH64_JUMP26:
a06ea964
NC		 5808 {
5809 asection *splt = globals->root.splt;
c7cd2917
SP		 5810 bfd_boolean via_plt_p =
5811 splt != NULL && h != NULL && h->plt.offset != (bfd_vma) - 1;
a06ea964
NC		 5812
5813 /* A call to an undefined weak symbol is converted to a jump to
5814 the next instruction unless a PLT entry will be created.
5815 The jump to the next instruction is optimized as a NOP.
5816 Do the same for local undefined symbols. */
5817 if (weak_undef_p && ! via_plt_p)
5818 {
5819 bfd_putl32 (INSN_NOP, hit_data);
5820 return bfd_reloc_ok;
5821 }
5822
5823 /* If the call goes through a PLT entry, make sure to
5824 check distance to the right destination address. */
5825 if (via_plt_p)
07f9ddfe
JW		 5826 value = (splt->output_section->vma
5827 + splt->output_offset + h->plt.offset);
5828
5829 /* Check if a stub has to be inserted because the destination
5830 is too far away. */
5831 struct elf_aarch64_stub_hash_entry *stub_entry = NULL;
2f340668
JW		 5832
5833 /* If the branch destination is directed to plt stub, "value" will be
5834 the final destination, otherwise we should plus signed_addend, it may
5835 contain non-zero value, for example call to local function symbol
5836 which are turned into "sec_sym + sec_off", and sec_off is kept in
5837 signed_addend. */
5838 if (! aarch64_valid_branch_p (via_plt_p ? value : value + signed_addend,
5839 place))
07f9ddfe
JW		 5840 /* The target is out of reach, so redirect the branch to
5841 the local stub for this function. */
5842 stub_entry = elfNN_aarch64_get_stub_entry (input_section, sym_sec, h,
5843 rel, globals);
5844 if (stub_entry != NULL)
2f340668
JW		 5845 {
5846 value = (stub_entry->stub_offset
5847 + stub_entry->stub_sec->output_offset
5848 + stub_entry->stub_sec->output_section->vma);
5849
5850 /* We have redirected the destination to stub entry address,
5851 so ignore any addend record in the original rela entry. */
5852 signed_addend = 0;
5853 }
a06ea964 5854 }
652afeef
TC		 5855 value = _bfd_aarch64_elf_resolve_relocation (input_bfd, bfd_r_type,
5856 place, value,
caed7120 5857 signed_addend, weak_undef_p);
07f9ddfe 5858 *unresolved_reloc_p = FALSE;
a06ea964
NC		 5859 break;
5860
dcbd20eb
JW		 5861 case BFD_RELOC_AARCH64_16_PCREL:
5862 case BFD_RELOC_AARCH64_32_PCREL:
5863 case BFD_RELOC_AARCH64_64_PCREL:
ce336788
JW		 5864 case BFD_RELOC_AARCH64_ADR_HI21_NC_PCREL:
5865 case BFD_RELOC_AARCH64_ADR_HI21_PCREL:
5866 case BFD_RELOC_AARCH64_ADR_LO21_PCREL:
5867 case BFD_RELOC_AARCH64_LD_LO19_PCREL:
1daf502a
RL		 5868 case BFD_RELOC_AARCH64_MOVW_PREL_G0:
5869 case BFD_RELOC_AARCH64_MOVW_PREL_G0_NC:
5870 case BFD_RELOC_AARCH64_MOVW_PREL_G1:
5871 case BFD_RELOC_AARCH64_MOVW_PREL_G1_NC:
5872 case BFD_RELOC_AARCH64_MOVW_PREL_G2:
5873 case BFD_RELOC_AARCH64_MOVW_PREL_G2_NC:
5874 case BFD_RELOC_AARCH64_MOVW_PREL_G3:
0e1862bb 5875 if (bfd_link_pic (info)
dcbd20eb
JW		 5876 && (input_section->flags & SEC_ALLOC) != 0
5877 && (input_section->flags & SEC_READONLY) != 0
d68f1976 5878 && !SYMBOL_REFERENCES_LOCAL (info, h))
dcbd20eb
JW		 5879 {
5880 int howto_index = bfd_r_type - BFD_RELOC_AARCH64_RELOC_START;
5881
4eca0228 5882 _bfd_error_handler
695344c0 5883 /* xgettext:c-format */
871b3ab2 5884 (_("%pB: relocation %s against symbol `%s' which may bind "
d68f1976
JW		 5885 "externally can not be used when making a shared object; "
5886 "recompile with -fPIC"),
dcbd20eb
JW		 5887 input_bfd, elfNN_aarch64_howto_table[howto_index].name,
5888 h->root.root.string);
5889 bfd_set_error (bfd_error_bad_value);
1d75a8e2 5890 return bfd_reloc_notsupported;
dcbd20eb 5891 }
c7cd2917
SP		 5892 value = _bfd_aarch64_elf_resolve_relocation (input_bfd, bfd_r_type,
5893 place, value,
5894 signed_addend,
5895 weak_undef_p);
5896 break;
5897
5898 case BFD_RELOC_AARCH64_BRANCH19:
5899 case BFD_RELOC_AARCH64_TSTBR14:
5900 if (h && h->root.type == bfd_link_hash_undefined)
5901 {
5902 _bfd_error_handler
5903 /* xgettext:c-format */
5904 (_("%pB: conditional branch to undefined symbol `%s' "
5905 "not allowed"), input_bfd, h->root.root.string);
5906 bfd_set_error (bfd_error_bad_value);
5907 return bfd_reloc_notsupported;
5908 }
1a0670f3 5909 /* Fall through. */
dcbd20eb 5910
a6bb11b2 5911 case BFD_RELOC_AARCH64_16:
92d77487
RL		 5912#if ARCH_SIZE == 64
5913 case BFD_RELOC_AARCH64_32:
5914#endif
a6bb11b2 5915 case BFD_RELOC_AARCH64_ADD_LO12:
ce336788 5916 case BFD_RELOC_AARCH64_LDST128_LO12:
a6bb11b2
YZ		 5917 case BFD_RELOC_AARCH64_LDST16_LO12:
5918 case BFD_RELOC_AARCH64_LDST32_LO12:
5919 case BFD_RELOC_AARCH64_LDST64_LO12:
ce336788 5920 case BFD_RELOC_AARCH64_LDST8_LO12:
a6bb11b2
YZ		 5921 case BFD_RELOC_AARCH64_MOVW_G0:
5922 case BFD_RELOC_AARCH64_MOVW_G0_NC:
ce336788 5923 case BFD_RELOC_AARCH64_MOVW_G0_S:
a6bb11b2
YZ		 5924 case BFD_RELOC_AARCH64_MOVW_G1:
5925 case BFD_RELOC_AARCH64_MOVW_G1_NC:
ce336788 5926 case BFD_RELOC_AARCH64_MOVW_G1_S:
a6bb11b2
YZ		 5927 case BFD_RELOC_AARCH64_MOVW_G2:
5928 case BFD_RELOC_AARCH64_MOVW_G2_NC:
ce336788 5929 case BFD_RELOC_AARCH64_MOVW_G2_S:
a6bb11b2 5930 case BFD_RELOC_AARCH64_MOVW_G3:
652afeef
TC		 5931 value = _bfd_aarch64_elf_resolve_relocation (input_bfd, bfd_r_type,
5932 place, value,
caed7120 5933 signed_addend, weak_undef_p);
a06ea964
NC		 5934 break;
5935
a6bb11b2
YZ		 5936 case BFD_RELOC_AARCH64_ADR_GOT_PAGE:
5937 case BFD_RELOC_AARCH64_GOT_LD_PREL19:
7018c030 5938 case BFD_RELOC_AARCH64_LD32_GOTPAGE_LO14:
ce336788 5939 case BFD_RELOC_AARCH64_LD32_GOT_LO12_NC:
99ad26cb 5940 case BFD_RELOC_AARCH64_LD64_GOTPAGE_LO15:
ce336788 5941 case BFD_RELOC_AARCH64_LD64_GOT_LO12_NC:
2aff25ba
JW		 5942 case BFD_RELOC_AARCH64_LD64_GOTOFF_LO15:
5943 case BFD_RELOC_AARCH64_MOVW_GOTOFF_G0_NC:
5944 case BFD_RELOC_AARCH64_MOVW_GOTOFF_G1:
a06ea964
NC		 5945 if (globals->root.sgot == NULL)
5946 BFD_ASSERT (h != NULL);
5947
ff07562f 5948 relative_reloc = FALSE;
a06ea964
NC		 5949 if (h != NULL)
5950 {
99ad26cb 5951 bfd_vma addend = 0;
ff07562f
JW		 5952
5953 /* If a symbol is not dynamic and is not undefined weak, bind it
5954 locally and generate a RELATIVE relocation under PIC mode.
5955
5956 NOTE: one symbol may be referenced by several relocations, we
5957 should only generate one RELATIVE relocation for that symbol.
5958 Therefore, check GOT offset mark first. */
5959 if (h->dynindx == -1
5960 && !h->forced_local
5961 && h->root.type != bfd_link_hash_undefweak
5962 && bfd_link_pic (info)
5963 && !symbol_got_offset_mark_p (input_bfd, h, r_symndx))
5964 relative_reloc = TRUE;
5965
a06ea964
NC		 5966 value = aarch64_calculate_got_entry_vma (h, globals, info, value,
5967 output_bfd,
5968 unresolved_reloc_p);
ff07562f
JW		 5969 /* Record the GOT entry address which will be used when generating
5970 RELATIVE relocation. */
5971 if (relative_reloc)
5972 got_entry_addr = value;
5973
2aff25ba 5974 if (aarch64_relocation_aginst_gp_p (bfd_r_type))
99ad26cb
JW		 5975 addend = (globals->root.sgot->output_section->vma
5976 + globals->root.sgot->output_offset);
652afeef
TC		 5977 value = _bfd_aarch64_elf_resolve_relocation (input_bfd, bfd_r_type,
5978 place, value,
99ad26cb 5979 addend, weak_undef_p);
a06ea964 5980 }
b53b1bed
JW		 5981 else
5982 {
99ad26cb 5983 bfd_vma addend = 0;
b53b1bed
JW		 5984 struct elf_aarch64_local_symbol *locals
5985 = elf_aarch64_locals (input_bfd);
5986
5987 if (locals == NULL)
5988 {
5989 int howto_index = bfd_r_type - BFD_RELOC_AARCH64_RELOC_START;
4eca0228 5990 _bfd_error_handler
695344c0 5991 /* xgettext:c-format */
90b6238f 5992 (_("%pB: local symbol descriptor table be NULL when applying "
b53b1bed
JW		 5993 "relocation %s against local symbol"),
5994 input_bfd, elfNN_aarch64_howto_table[howto_index].name);
5995 abort ();
5996 }
5997
5998 off = symbol_got_offset (input_bfd, h, r_symndx);
5999 base_got = globals->root.sgot;
ff07562f
JW		 6000 got_entry_addr = (base_got->output_section->vma
6001 + base_got->output_offset + off);
b53b1bed
JW		 6002
6003 if (!symbol_got_offset_mark_p (input_bfd, h, r_symndx))
6004 {
6005 bfd_put_64 (output_bfd, value, base_got->contents + off);
6006
ff07562f
JW		 6007 /* For local symbol, we have done absolute relocation in static
6008 linking stage. While for shared library, we need to update the
6009 content of GOT entry according to the shared object's runtime
6010 base address. So, we need to generate a R_AARCH64_RELATIVE reloc
6011 for dynamic linker. */
0e1862bb 6012 if (bfd_link_pic (info))
ff07562f 6013 relative_reloc = TRUE;
b53b1bed
JW		 6014
6015 symbol_got_offset_mark (input_bfd, h, r_symndx);
6016 }
6017
6018 /* Update the relocation value to GOT entry addr as we have transformed
6019 the direct data access into indirect data access through GOT. */
6020 value = got_entry_addr;
99ad26cb 6021
2aff25ba 6022 if (aarch64_relocation_aginst_gp_p (bfd_r_type))
99ad26cb
JW		 6023 addend = base_got->output_section->vma + base_got->output_offset;
6024
652afeef
TC		 6025 value = _bfd_aarch64_elf_resolve_relocation (input_bfd, bfd_r_type,
6026 place, value,
99ad26cb 6027 addend, weak_undef_p);
b53b1bed 6028 }
ff07562f
JW		 6029
6030 if (relative_reloc)
6031 {
6032 asection *s;
6033 Elf_Internal_Rela outrel;
6034
6035 s = globals->root.srelgot;
6036 if (s == NULL)
6037 abort ();
6038
6039 outrel.r_offset = got_entry_addr;
6040 outrel.r_info = ELFNN_R_INFO (0, AARCH64_R (RELATIVE));
6041 outrel.r_addend = orig_value;
6042 elf_append_rela (output_bfd, s, &outrel);
6043 }
a2e1db00
RL		 6044 break;
6045
ce336788 6046 case BFD_RELOC_AARCH64_TLSGD_ADD_LO12_NC:
a6bb11b2 6047 case BFD_RELOC_AARCH64_TLSGD_ADR_PAGE21:
3c12b054 6048 case BFD_RELOC_AARCH64_TLSGD_ADR_PREL21:
a6bb11b2 6049 case BFD_RELOC_AARCH64_TLSIE_ADR_GOTTPREL_PAGE21:
a6bb11b2 6050 case BFD_RELOC_AARCH64_TLSIE_LD32_GOTTPREL_LO12_NC:
ce336788 6051 case BFD_RELOC_AARCH64_TLSIE_LD64_GOTTPREL_LO12_NC:
043bf05a 6052 case BFD_RELOC_AARCH64_TLSIE_LD_GOTTPREL_PREL19:
73f925cc 6053 case BFD_RELOC_AARCH64_TLSLD_ADD_LO12_NC:
f69e4920 6054 case BFD_RELOC_AARCH64_TLSLD_ADR_PAGE21:
77a69ff8 6055 case BFD_RELOC_AARCH64_TLSLD_ADR_PREL21:
a06ea964
NC		 6056 if (globals->root.sgot == NULL)
6057 return bfd_reloc_notsupported;
6058
6059 value = (symbol_got_offset (input_bfd, h, r_symndx)
6060 + globals->root.sgot->output_section->vma
f44a1f8e 6061 + globals->root.sgot->output_offset);
a06ea964 6062
652afeef
TC		 6063 value = _bfd_aarch64_elf_resolve_relocation (input_bfd, bfd_r_type,
6064 place, value,
caed7120 6065 0, weak_undef_p);
a06ea964
NC		 6066 *unresolved_reloc_p = FALSE;
6067 break;
6068
7ba7cfe4 6069 case BFD_RELOC_AARCH64_TLSGD_MOVW_G0_NC:
94facae3 6070 case BFD_RELOC_AARCH64_TLSGD_MOVW_G1:
3b957e5b
RL		 6071 case BFD_RELOC_AARCH64_TLSIE_MOVW_GOTTPREL_G0_NC:
6072 case BFD_RELOC_AARCH64_TLSIE_MOVW_GOTTPREL_G1:
94facae3
RL		 6073 if (globals->root.sgot == NULL)
6074 return bfd_reloc_notsupported;
6075
6076 value = symbol_got_offset (input_bfd, h, r_symndx);
652afeef
TC		 6077 value = _bfd_aarch64_elf_resolve_relocation (input_bfd, bfd_r_type,
6078 place, value,
94facae3
RL		 6079 0, weak_undef_p);
6080 *unresolved_reloc_p = FALSE;
6081 break;
6082
6ffe9a1b 6083 case BFD_RELOC_AARCH64_TLSLD_ADD_DTPREL_HI12:
40fbed84 6084 case BFD_RELOC_AARCH64_TLSLD_ADD_DTPREL_LO12:
753999c1 6085 case BFD_RELOC_AARCH64_TLSLD_ADD_DTPREL_LO12_NC:
07c9aa07
JW		 6086 case BFD_RELOC_AARCH64_TLSLD_LDST16_DTPREL_LO12:
6087 case BFD_RELOC_AARCH64_TLSLD_LDST16_DTPREL_LO12_NC:
6088 case BFD_RELOC_AARCH64_TLSLD_LDST32_DTPREL_LO12:
6089 case BFD_RELOC_AARCH64_TLSLD_LDST32_DTPREL_LO12_NC:
6090 case BFD_RELOC_AARCH64_TLSLD_LDST64_DTPREL_LO12:
6091 case BFD_RELOC_AARCH64_TLSLD_LDST64_DTPREL_LO12_NC:
6092 case BFD_RELOC_AARCH64_TLSLD_LDST8_DTPREL_LO12:
6093 case BFD_RELOC_AARCH64_TLSLD_LDST8_DTPREL_LO12_NC:
6ffe9a1b
JW		 6094 case BFD_RELOC_AARCH64_TLSLD_MOVW_DTPREL_G0:
6095 case BFD_RELOC_AARCH64_TLSLD_MOVW_DTPREL_G0_NC:
6096 case BFD_RELOC_AARCH64_TLSLD_MOVW_DTPREL_G1:
6097 case BFD_RELOC_AARCH64_TLSLD_MOVW_DTPREL_G1_NC:
6098 case BFD_RELOC_AARCH64_TLSLD_MOVW_DTPREL_G2:
652afeef
TC		 6099 {
6100 if (!(weak_undef_p || elf_hash_table (info)->tls_sec))
6101 {
6102 int howto_index = bfd_r_type - BFD_RELOC_AARCH64_RELOC_START;
6103 _bfd_error_handler
6104 /* xgettext:c-format */
6105 (_("%pB: TLS relocation %s against undefined symbol `%s'"),
6106 input_bfd, elfNN_aarch64_howto_table[howto_index].name,
6107 h->root.root.string);
6108 bfd_set_error (bfd_error_bad_value);
6109 return bfd_reloc_notsupported;
6110 }
6111
6112 bfd_vma def_value
6113 = weak_undef_p ? 0 : signed_addend - dtpoff_base (info);
6114 value = _bfd_aarch64_elf_resolve_relocation (input_bfd, bfd_r_type,
6115 place, value,
6116 def_value, weak_undef_p);
6117 break;
6118 }
40fbed84 6119
a6bb11b2
YZ		 6120 case BFD_RELOC_AARCH64_TLSLE_ADD_TPREL_HI12:
6121 case BFD_RELOC_AARCH64_TLSLE_ADD_TPREL_LO12:
6122 case BFD_RELOC_AARCH64_TLSLE_ADD_TPREL_LO12_NC:
e04ef022
RL		 6123 case BFD_RELOC_AARCH64_TLSLE_LDST16_TPREL_LO12:
6124 case BFD_RELOC_AARCH64_TLSLE_LDST16_TPREL_LO12_NC:
6125 case BFD_RELOC_AARCH64_TLSLE_LDST32_TPREL_LO12:
6126 case BFD_RELOC_AARCH64_TLSLE_LDST32_TPREL_LO12_NC:
6127 case BFD_RELOC_AARCH64_TLSLE_LDST64_TPREL_LO12:
6128 case BFD_RELOC_AARCH64_TLSLE_LDST64_TPREL_LO12_NC:
6129 case BFD_RELOC_AARCH64_TLSLE_LDST8_TPREL_LO12:
6130 case BFD_RELOC_AARCH64_TLSLE_LDST8_TPREL_LO12_NC:
a6bb11b2
YZ		 6131 case BFD_RELOC_AARCH64_TLSLE_MOVW_TPREL_G0:
6132 case BFD_RELOC_AARCH64_TLSLE_MOVW_TPREL_G0_NC:
6133 case BFD_RELOC_AARCH64_TLSLE_MOVW_TPREL_G1:
6134 case BFD_RELOC_AARCH64_TLSLE_MOVW_TPREL_G1_NC:
6135 case BFD_RELOC_AARCH64_TLSLE_MOVW_TPREL_G2:
652afeef
TC		 6136 {
6137 if (!(weak_undef_p || elf_hash_table (info)->tls_sec))
6138 {
6139 int howto_index = bfd_r_type - BFD_RELOC_AARCH64_RELOC_START;
6140 _bfd_error_handler
6141 /* xgettext:c-format */
6142 (_("%pB: TLS relocation %s against undefined symbol `%s'"),
6143 input_bfd, elfNN_aarch64_howto_table[howto_index].name,
6144 h->root.root.string);
6145 bfd_set_error (bfd_error_bad_value);
6146 return bfd_reloc_notsupported;
6147 }
6148
6149 bfd_vma def_value
6150 = weak_undef_p ? 0 : signed_addend - tpoff_base (info);
6151 value = _bfd_aarch64_elf_resolve_relocation (input_bfd, bfd_r_type,
6152 place, value,
6153 def_value, weak_undef_p);
6154 *unresolved_reloc_p = FALSE;
6155 break;
6156 }
a06ea964 6157
f955cccf 6158 case BFD_RELOC_AARCH64_TLSDESC_ADD_LO12:
a6bb11b2 6159 case BFD_RELOC_AARCH64_TLSDESC_ADR_PAGE21:
389b8029 6160 case BFD_RELOC_AARCH64_TLSDESC_ADR_PREL21:
a6bb11b2 6161 case BFD_RELOC_AARCH64_TLSDESC_LD32_LO12_NC:
f955cccf 6162 case BFD_RELOC_AARCH64_TLSDESC_LD64_LO12:
1ada945d 6163 case BFD_RELOC_AARCH64_TLSDESC_LD_PREL19:
a06ea964
NC		 6164 if (globals->root.sgot == NULL)
6165 return bfd_reloc_notsupported;
a06ea964
NC		 6166 value = (symbol_tlsdesc_got_offset (input_bfd, h, r_symndx)
6167 + globals->root.sgotplt->output_section->vma
f44a1f8e 6168 + globals->root.sgotplt->output_offset
a06ea964
NC		 6169 + globals->sgotplt_jump_table_size);
6170
652afeef
TC		 6171 value = _bfd_aarch64_elf_resolve_relocation (input_bfd, bfd_r_type,
6172 place, value,
caed7120 6173 0, weak_undef_p);
a06ea964
NC		 6174 *unresolved_reloc_p = FALSE;
6175 break;
6176
0484b454
RL		 6177 case BFD_RELOC_AARCH64_TLSDESC_OFF_G0_NC:
6178 case BFD_RELOC_AARCH64_TLSDESC_OFF_G1:
6179 if (globals->root.sgot == NULL)
6180 return bfd_reloc_notsupported;
6181
6182 value = (symbol_tlsdesc_got_offset (input_bfd, h, r_symndx)
6183 + globals->root.sgotplt->output_section->vma
6184 + globals->root.sgotplt->output_offset
6185 + globals->sgotplt_jump_table_size);
6186
6187 value -= (globals->root.sgot->output_section->vma
6188 + globals->root.sgot->output_offset);
6189
652afeef
TC		 6190 value = _bfd_aarch64_elf_resolve_relocation (input_bfd, bfd_r_type,
6191 place, value,
0484b454
RL		 6192 0, weak_undef_p);
6193 *unresolved_reloc_p = FALSE;
6194 break;
6195
a06ea964
NC		 6196 default:
6197 return bfd_reloc_notsupported;
6198 }
6199
6200 if (saved_addend)
6201 *saved_addend = value;
6202
6203 /* Only apply the final relocation in a sequence. */
6204 if (save_addend)
6205 return bfd_reloc_continue;
6206
caed7120
YZ		 6207 return _bfd_aarch64_elf_put_addend (input_bfd, hit_data, bfd_r_type,
6208 howto, value);
a06ea964
NC		 6209}
6210
2d0ca824
YN		 6211/* LP64 and ILP32 operates on x- and w-registers respectively.
6212 Next definitions take into account the difference between
6213 corresponding machine codes. R means x-register if the target
6214 arch is LP64, and w-register if the target is ILP32. */
6215
6216#if ARCH_SIZE == 64
6217# define add_R0_R0 (0x91000000)
6218# define add_R0_R0_R1 (0x8b000020)
6219# define add_R0_R1 (0x91400020)
6220# define ldr_R0 (0x58000000)
6221# define ldr_R0_mask(i) (i & 0xffffffe0)
6222# define ldr_R0_x0 (0xf9400000)
6223# define ldr_hw_R0 (0xf2a00000)
6224# define movk_R0 (0xf2800000)
6225# define movz_R0 (0xd2a00000)
6226# define movz_hw_R0 (0xd2c00000)
6227#else /*ARCH_SIZE == 32 */
6228# define add_R0_R0 (0x11000000)
6229# define add_R0_R0_R1 (0x0b000020)
6230# define add_R0_R1 (0x11400020)
6231# define ldr_R0 (0x18000000)
6232# define ldr_R0_mask(i) (i & 0xbfffffe0)
6233# define ldr_R0_x0 (0xb9400000)
6234# define ldr_hw_R0 (0x72a00000)
6235# define movk_R0 (0x72800000)
6236# define movz_R0 (0x52a00000)
6237# define movz_hw_R0 (0x52c00000)
6238#endif
6239
9fca35fc
TC		 6240/* Structure to hold payload for _bfd_aarch64_erratum_843419_clear_stub,
6241 it is used to identify the stub information to reset. */
6242
6243struct erratum_843419_branch_to_stub_clear_data
6244{
6245 bfd_vma adrp_offset;
6246 asection *output_section;
6247};
6248
6249/* Clear the erratum information for GEN_ENTRY if the ADRP_OFFSET and
6250 section inside IN_ARG matches. The clearing is done by setting the
6251 stub_type to none. */
6252
6253static bfd_boolean
6254_bfd_aarch64_erratum_843419_clear_stub (struct bfd_hash_entry *gen_entry,
6255 void *in_arg)
6256{
6257 struct elf_aarch64_stub_hash_entry *stub_entry
6258 = (struct elf_aarch64_stub_hash_entry *) gen_entry;
6259 struct erratum_843419_branch_to_stub_clear_data *data
6260 = (struct erratum_843419_branch_to_stub_clear_data *) in_arg;
6261
6262 if (stub_entry->target_section != data->output_section
6263 || stub_entry->stub_type != aarch64_stub_erratum_843419_veneer
6264 || stub_entry->adrp_offset != data->adrp_offset)
6265 return TRUE;
6266
6267 /* Change the stub type instead of removing the entry, removing from the hash
6268 table would be slower and we have already reserved the memory for the entry
6269 so there wouldn't be much gain. Changing the stub also keeps around a
6270 record of what was there before. */
6271 stub_entry->stub_type = aarch64_stub_none;
6272
6273 /* We're done and there could have been only one matching stub at that
6274 particular offset, so abort further traversal. */
6275 return FALSE;
6276}
6277
6278/* TLS Relaxations may relax an adrp sequence that matches the erratum 843419
6279 sequence. In this case the erratum no longer applies and we need to remove
6280 the entry from the pending stub generation. This clears matching adrp insn
6281 at ADRP_OFFSET in INPUT_SECTION in the stub table defined in GLOBALS. */
6282
6283static void
6284clear_erratum_843419_entry (struct elf_aarch64_link_hash_table *globals,
6285 bfd_vma adrp_offset, asection *input_section)
6286{
739b5c9c 6287 if (globals->fix_erratum_843419 & ERRAT_ADRP)
9fca35fc
TC		 6288 {
6289 struct erratum_843419_branch_to_stub_clear_data data;
6290 data.adrp_offset = adrp_offset;
6291 data.output_section = input_section;
6292
6293 bfd_hash_traverse (&globals->stub_hash_table,
6294 _bfd_aarch64_erratum_843419_clear_stub, &data);
6295 }
6296}
6297
a06ea964
NC		 6298/* Handle TLS relaxations. Relaxing is possible for symbols that use
6299 R_AARCH64_TLSDESC_ADR_{PAGE, LD64_LO12_NC, ADD_LO12_NC} during a static
6300 link.
6301
6302 Return bfd_reloc_ok if we're done, bfd_reloc_continue if the caller
6303 is to then call final_link_relocate. Return other values in the
6304 case of error. */
6305
6306static bfd_reloc_status_type
cec5225b 6307elfNN_aarch64_tls_relax (struct elf_aarch64_link_hash_table *globals,
9fca35fc
TC		 6308 bfd *input_bfd, asection *input_section,
6309 bfd_byte *contents, Elf_Internal_Rela *rel,
6310 struct elf_link_hash_entry *h)
a06ea964
NC		 6311{
6312 bfd_boolean is_local = h == NULL;
cec5225b 6313 unsigned int r_type = ELFNN_R_TYPE (rel->r_info);
a06ea964
NC		 6314 unsigned long insn;
6315
6316 BFD_ASSERT (globals && input_bfd && contents && rel);
6317
0aa13fee 6318 switch (elfNN_aarch64_bfd_reloc_from_type (input_bfd, r_type))
a06ea964 6319 {
a6bb11b2 6320 case BFD_RELOC_AARCH64_TLSDESC_ADR_PAGE21:
ce336788 6321 case BFD_RELOC_AARCH64_TLSGD_ADR_PAGE21:
a06ea964
NC		 6322 if (is_local)
6323 {
6324 /* GD->LE relaxation:
2d0ca824 6325 adrp x0, :tlsgd:var => movz R0, :tprel_g1:var
a06ea964 6326 or
2d0ca824
YN		 6327 adrp x0, :tlsdesc:var => movz R0, :tprel_g1:var
6328
6329 Where R is x for LP64, and w for ILP32. */
6330 bfd_putl32 (movz_R0, contents + rel->r_offset);
9fca35fc
TC		 6331 /* We have relaxed the adrp into a mov, we may have to clear any
6332 pending erratum fixes. */
6333 clear_erratum_843419_entry (globals, rel->r_offset, input_section);
a06ea964
NC		 6334 return bfd_reloc_continue;
6335 }
6336 else
6337 {
6338 /* GD->IE relaxation:
6339 adrp x0, :tlsgd:var => adrp x0, :gottprel:var
6340 or
6341 adrp x0, :tlsdesc:var => adrp x0, :gottprel:var
6342 */
a06ea964
NC		 6343 return bfd_reloc_continue;
6344 }
6345
389b8029
MS		 6346 case BFD_RELOC_AARCH64_TLSDESC_ADR_PREL21:
6347 BFD_ASSERT (0);
6348 break;
6349
1ada945d
MS		 6350 case BFD_RELOC_AARCH64_TLSDESC_LD_PREL19:
6351 if (is_local)
6352 {
6353 /* Tiny TLSDESC->LE relaxation:
07d6d2b8
AM		 6354 ldr x1, :tlsdesc:var => movz R0, #:tprel_g1:var
6355 adr x0, :tlsdesc:var => movk R0, #:tprel_g0_nc:var
1ada945d 6356 .tlsdesccall var
07d6d2b8 6357 blr x1 => nop
2d0ca824
YN		 6358
6359 Where R is x for LP64, and w for ILP32. */
1ada945d
MS		 6360 BFD_ASSERT (ELFNN_R_TYPE (rel[1].r_info) == AARCH64_R (TLSDESC_ADR_PREL21));
6361 BFD_ASSERT (ELFNN_R_TYPE (rel[2].r_info) == AARCH64_R (TLSDESC_CALL));
6362
6363 rel[1].r_info = ELFNN_R_INFO (ELFNN_R_SYM (rel->r_info),
6364 AARCH64_R (TLSLE_MOVW_TPREL_G0_NC));
6365 rel[2].r_info = ELFNN_R_INFO (STN_UNDEF, R_AARCH64_NONE);
6366
2d0ca824
YN		 6367 bfd_putl32 (movz_R0, contents + rel->r_offset);
6368 bfd_putl32 (movk_R0, contents + rel->r_offset + 4);
1ada945d
MS		 6369 bfd_putl32 (INSN_NOP, contents + rel->r_offset + 8);
6370 return bfd_reloc_continue;
6371 }
6372 else
6373 {
6374 /* Tiny TLSDESC->IE relaxation:
07d6d2b8
AM		 6375 ldr x1, :tlsdesc:var => ldr x0, :gottprel:var
6376 adr x0, :tlsdesc:var => nop
1ada945d 6377 .tlsdesccall var
07d6d2b8 6378 blr x1 => nop
1ada945d
MS		 6379 */
6380 BFD_ASSERT (ELFNN_R_TYPE (rel[1].r_info) == AARCH64_R (TLSDESC_ADR_PREL21));
6381 BFD_ASSERT (ELFNN_R_TYPE (rel[2].r_info) == AARCH64_R (TLSDESC_CALL));
6382
6383 rel[1].r_info = ELFNN_R_INFO (STN_UNDEF, R_AARCH64_NONE);
6384 rel[2].r_info = ELFNN_R_INFO (STN_UNDEF, R_AARCH64_NONE);
6385
2d0ca824 6386 bfd_putl32 (ldr_R0, contents + rel->r_offset);
1ada945d
MS		 6387 bfd_putl32 (INSN_NOP, contents + rel->r_offset + 4);
6388 bfd_putl32 (INSN_NOP, contents + rel->r_offset + 8);
6389 return bfd_reloc_continue;
6390 }
6391
3c12b054
MS		 6392 case BFD_RELOC_AARCH64_TLSGD_ADR_PREL21:
6393 if (is_local)
6394 {
6395 /* Tiny GD->LE relaxation:
07d6d2b8
AM		 6396 adr x0, :tlsgd:var => mrs x1, tpidr_el0
6397 bl __tls_get_addr => add R0, R1, #:tprel_hi12:x, lsl #12
6398 nop => add R0, R0, #:tprel_lo12_nc:x
2d0ca824
YN		 6399
6400 Where R is x for LP64, and x for Ilp32. */
3c12b054
MS		 6401
6402 /* First kill the tls_get_addr reloc on the bl instruction. */
6403 BFD_ASSERT (rel->r_offset + 4 == rel[1].r_offset);
6404
6405 bfd_putl32 (0xd53bd041, contents + rel->r_offset + 0);
2d0ca824
YN		 6406 bfd_putl32 (add_R0_R1, contents + rel->r_offset + 4);
6407 bfd_putl32 (add_R0_R0, contents + rel->r_offset + 8);
3c12b054
MS		 6408
6409 rel[1].r_info = ELFNN_R_INFO (ELFNN_R_SYM (rel->r_info),
6410 AARCH64_R (TLSLE_ADD_TPREL_LO12_NC));
6411 rel[1].r_offset = rel->r_offset + 8;
6412
6413 /* Move the current relocation to the second instruction in
6414 the sequence. */
6415 rel->r_offset += 4;
6416 rel->r_info = ELFNN_R_INFO (ELFNN_R_SYM (rel->r_info),
6417 AARCH64_R (TLSLE_ADD_TPREL_HI12));
6418 return bfd_reloc_continue;
6419 }
6420 else
6421 {
6422 /* Tiny GD->IE relaxation:
07d6d2b8
AM		 6423 adr x0, :tlsgd:var => ldr R0, :gottprel:var
6424 bl __tls_get_addr => mrs x1, tpidr_el0
6425 nop => add R0, R0, R1
2d0ca824
YN		 6426
6427 Where R is x for LP64, and w for Ilp32. */
3c12b054
MS		 6428
6429 /* First kill the tls_get_addr reloc on the bl instruction. */
6430 BFD_ASSERT (rel->r_offset + 4 == rel[1].r_offset);
6431 rel[1].r_info = ELFNN_R_INFO (STN_UNDEF, R_AARCH64_NONE);
6432
2d0ca824 6433 bfd_putl32 (ldr_R0, contents + rel->r_offset);
3c12b054 6434 bfd_putl32 (0xd53bd041, contents + rel->r_offset + 4);
2d0ca824 6435 bfd_putl32 (add_R0_R0_R1, contents + rel->r_offset + 8);
3c12b054
MS		 6436 return bfd_reloc_continue;
6437 }
6438
ac734732
RL		 6439#if ARCH_SIZE == 64
6440 case BFD_RELOC_AARCH64_TLSGD_MOVW_G1:
6441 BFD_ASSERT (ELFNN_R_TYPE (rel[1].r_info) == AARCH64_R (TLSGD_MOVW_G0_NC));
6442 BFD_ASSERT (rel->r_offset + 12 == rel[2].r_offset);
6443 BFD_ASSERT (ELFNN_R_TYPE (rel[2].r_info) == AARCH64_R (CALL26));
6444
6445 if (is_local)
6446 {
6447 /* Large GD->LE relaxation:
07d6d2b8 6448 movz x0, #:tlsgd_g1:var => movz x0, #:tprel_g2:var, lsl #32
ac734732 6449 movk x0, #:tlsgd_g0_nc:var => movk x0, #:tprel_g1_nc:var, lsl #16
07d6d2b8
AM		 6450 add x0, gp, x0 => movk x0, #:tprel_g0_nc:var
6451 bl __tls_get_addr => mrs x1, tpidr_el0
6452 nop => add x0, x0, x1
ac734732
RL		 6453 */
6454 rel[2].r_info = ELFNN_R_INFO (ELFNN_R_SYM (rel->r_info),
6455 AARCH64_R (TLSLE_MOVW_TPREL_G0_NC));
6456 rel[2].r_offset = rel->r_offset + 8;
6457
2d0ca824
YN		 6458 bfd_putl32 (movz_hw_R0, contents + rel->r_offset + 0);
6459 bfd_putl32 (ldr_hw_R0, contents + rel->r_offset + 4);
6460 bfd_putl32 (movk_R0, contents + rel->r_offset + 8);
ac734732 6461 bfd_putl32 (0xd53bd041, contents + rel->r_offset + 12);
2d0ca824 6462 bfd_putl32 (add_R0_R0_R1, contents + rel->r_offset + 16);
ac734732
RL		 6463 }
6464 else
6465 {
6466 /* Large GD->IE relaxation:
07d6d2b8 6467 movz x0, #:tlsgd_g1:var => movz x0, #:gottprel_g1:var, lsl #16
ac734732 6468 movk x0, #:tlsgd_g0_nc:var => movk x0, #:gottprel_g0_nc:var
07d6d2b8
AM		 6469 add x0, gp, x0 => ldr x0, [gp, x0]
6470 bl __tls_get_addr => mrs x1, tpidr_el0
6471 nop => add x0, x0, x1
ac734732
RL		 6472 */
6473 rel[2].r_info = ELFNN_R_INFO (STN_UNDEF, R_AARCH64_NONE);
6474 bfd_putl32 (0xd2a80000, contents + rel->r_offset + 0);
2d0ca824 6475 bfd_putl32 (ldr_R0, contents + rel->r_offset + 8);
ac734732 6476 bfd_putl32 (0xd53bd041, contents + rel->r_offset + 12);
2d0ca824 6477 bfd_putl32 (add_R0_R0_R1, contents + rel->r_offset + 16);
ac734732
RL		 6478 }
6479 return bfd_reloc_continue;
6480
6481 case BFD_RELOC_AARCH64_TLSGD_MOVW_G0_NC:
6482 return bfd_reloc_continue;
6483#endif
6484
043bf05a
MS		 6485 case BFD_RELOC_AARCH64_TLSIE_LD_GOTTPREL_PREL19:
6486 return bfd_reloc_continue;
6487
a6bb11b2 6488 case BFD_RELOC_AARCH64_TLSDESC_LDNN_LO12_NC:
a06ea964
NC		 6489 if (is_local)
6490 {
6491 /* GD->LE relaxation:
6492 ldr xd, [x0, #:tlsdesc_lo12:var] => movk x0, :tprel_g0_nc:var
2d0ca824
YN		 6493
6494 Where R is x for lp64 mode, and w for ILP32 mode. */
6495 bfd_putl32 (movk_R0, contents + rel->r_offset);
a06ea964
NC		 6496 return bfd_reloc_continue;
6497 }
6498 else
6499 {
6500 /* GD->IE relaxation:
2d0ca824
YN		 6501 ldr xd, [x0, #:tlsdesc_lo12:var] => ldr R0, [x0, #:gottprel_lo12:var]
6502
6503 Where R is x for lp64 mode, and w for ILP32 mode. */
a06ea964 6504 insn = bfd_getl32 (contents + rel->r_offset);
2d0ca824 6505 bfd_putl32 (ldr_R0_mask (insn), contents + rel->r_offset);
a06ea964
NC		 6506 return bfd_reloc_continue;
6507 }
6508
a6bb11b2 6509 case BFD_RELOC_AARCH64_TLSGD_ADD_LO12_NC:
a06ea964
NC		 6510 if (is_local)
6511 {
6512 /* GD->LE relaxation
07d6d2b8
AM		 6513 add x0, #:tlsgd_lo12:var => movk R0, :tprel_g0_nc:var
6514 bl __tls_get_addr => mrs x1, tpidr_el0
6515 nop => add R0, R1, R0
2d0ca824
YN		 6516
6517 Where R is x for lp64 mode, and w for ILP32 mode. */
a06ea964
NC		 6518
6519 /* First kill the tls_get_addr reloc on the bl instruction. */
6520 BFD_ASSERT (rel->r_offset + 4 == rel[1].r_offset);
cec5225b 6521 rel[1].r_info = ELFNN_R_INFO (STN_UNDEF, R_AARCH64_NONE);
a06ea964 6522
2d0ca824 6523 bfd_putl32 (movk_R0, contents + rel->r_offset);
a06ea964 6524 bfd_putl32 (0xd53bd041, contents + rel->r_offset + 4);
2d0ca824 6525 bfd_putl32 (add_R0_R0_R1, contents + rel->r_offset + 8);
a06ea964
NC		 6526 return bfd_reloc_continue;
6527 }
6528 else
6529 {
6530 /* GD->IE relaxation
07d6d2b8
AM		 6531 ADD x0, #:tlsgd_lo12:var => ldr R0, [x0, #:gottprel_lo12:var]
6532 BL __tls_get_addr => mrs x1, tpidr_el0
a06ea964 6533 R_AARCH64_CALL26
07d6d2b8 6534 NOP => add R0, R1, R0
5cd1d8bc
YN		 6535
6536 Where R is x for lp64 mode, and w for ilp32 mode. */
a06ea964 6537
a6bb11b2 6538 BFD_ASSERT (ELFNN_R_TYPE (rel[1].r_info) == AARCH64_R (CALL26));
a06ea964
NC		 6539
6540 /* Remove the relocation on the BL instruction. */
cec5225b 6541 rel[1].r_info = ELFNN_R_INFO (STN_UNDEF, R_AARCH64_NONE);
a06ea964 6542
a06ea964
NC		 6543 /* We choose to fixup the BL and NOP instructions using the
6544 offset from the second relocation to allow flexibility in
6545 scheduling instructions between the ADD and BL. */
2d0ca824 6546 bfd_putl32 (ldr_R0_x0, contents + rel->r_offset);
5cd1d8bc 6547 bfd_putl32 (0xd53bd041, contents + rel[1].r_offset);
2d0ca824 6548 bfd_putl32 (add_R0_R0_R1, contents + rel[1].r_offset + 4);
a06ea964
NC		 6549 return bfd_reloc_continue;
6550 }
6551
0484b454 6552 case BFD_RELOC_AARCH64_TLSDESC_ADD:
f955cccf 6553 case BFD_RELOC_AARCH64_TLSDESC_ADD_LO12:
a6bb11b2 6554 case BFD_RELOC_AARCH64_TLSDESC_CALL:
a06ea964 6555 /* GD->IE/LE relaxation:
07d6d2b8
AM		 6556 add x0, x0, #:tlsdesc_lo12:var => nop
6557 blr xd => nop
a06ea964
NC		 6558 */
6559 bfd_putl32 (INSN_NOP, contents + rel->r_offset);
6560 return bfd_reloc_ok;
6561
0484b454
RL		 6562 case BFD_RELOC_AARCH64_TLSDESC_LDR:
6563 if (is_local)
6564 {
6565 /* GD->LE relaxation:
2d0ca824
YN		 6566 ldr xd, [gp, xn] => movk R0, #:tprel_g0_nc:var
6567
6568 Where R is x for lp64 mode, and w for ILP32 mode. */
6569 bfd_putl32 (movk_R0, contents + rel->r_offset);
0484b454
RL		 6570 return bfd_reloc_continue;
6571 }
6572 else
6573 {
6574 /* GD->IE relaxation:
2d0ca824
YN		 6575 ldr xd, [gp, xn] => ldr R0, [gp, xn]
6576
6577 Where R is x for lp64 mode, and w for ILP32 mode. */
0484b454 6578 insn = bfd_getl32 (contents + rel->r_offset);
2d0ca824 6579 bfd_putl32 (ldr_R0_mask (insn), contents + rel->r_offset);
0484b454
RL		 6580 return bfd_reloc_ok;
6581 }
6582
6583 case BFD_RELOC_AARCH64_TLSDESC_OFF_G0_NC:
6584 /* GD->LE relaxation:
2d0ca824 6585 movk xd, #:tlsdesc_off_g0_nc:var => movk R0, #:tprel_g1_nc:var, lsl #16
0484b454 6586 GD->IE relaxation:
2d0ca824
YN		 6587 movk xd, #:tlsdesc_off_g0_nc:var => movk Rd, #:gottprel_g0_nc:var
6588
6589 Where R is x for lp64 mode, and w for ILP32 mode. */
0484b454 6590 if (is_local)
2d0ca824 6591 bfd_putl32 (ldr_hw_R0, contents + rel->r_offset);
0484b454
RL		 6592 return bfd_reloc_continue;
6593
6594 case BFD_RELOC_AARCH64_TLSDESC_OFF_G1:
6595 if (is_local)
6596 {
6597 /* GD->LE relaxation:
2d0ca824
YN		 6598 movz xd, #:tlsdesc_off_g1:var => movz R0, #:tprel_g2:var, lsl #32
6599
6600 Where R is x for lp64 mode, and w for ILP32 mode. */
6601 bfd_putl32 (movz_hw_R0, contents + rel->r_offset);
0484b454
RL		 6602 return bfd_reloc_continue;
6603 }
6604 else
6605 {
6606 /* GD->IE relaxation:
2d0ca824
YN		 6607 movz xd, #:tlsdesc_off_g1:var => movz Rd, #:gottprel_g1:var, lsl #16
6608
6609 Where R is x for lp64 mode, and w for ILP32 mode. */
0484b454 6610 insn = bfd_getl32 (contents + rel->r_offset);
2d0ca824 6611 bfd_putl32 (movz_R0 | (insn & 0x1f), contents + rel->r_offset);
0484b454
RL		 6612 return bfd_reloc_continue;
6613 }
6614
a6bb11b2 6615 case BFD_RELOC_AARCH64_TLSIE_ADR_GOTTPREL_PAGE21:
a06ea964 6616 /* IE->LE relaxation:
07d6d2b8 6617 adrp xd, :gottprel:var => movz Rd, :tprel_g1:var
2d0ca824
YN		 6618
6619 Where R is x for lp64 mode, and w for ILP32 mode. */
a06ea964
NC		 6620 if (is_local)
6621 {
6622 insn = bfd_getl32 (contents + rel->r_offset);
2d0ca824 6623 bfd_putl32 (movz_R0 | (insn & 0x1f), contents + rel->r_offset);
9fca35fc
TC		 6624 /* We have relaxed the adrp into a mov, we may have to clear any
6625 pending erratum fixes. */
6626 clear_erratum_843419_entry (globals, rel->r_offset, input_section);
a06ea964
NC		 6627 }
6628 return bfd_reloc_continue;
6629
a6bb11b2 6630 case BFD_RELOC_AARCH64_TLSIE_LDNN_GOTTPREL_LO12_NC:
a06ea964 6631 /* IE->LE relaxation:
07d6d2b8 6632 ldr xd, [xm, #:gottprel_lo12:var] => movk Rd, :tprel_g0_nc:var
2d0ca824
YN		 6633
6634 Where R is x for lp64 mode, and w for ILP32 mode. */
a06ea964
NC		 6635 if (is_local)
6636 {
6637 insn = bfd_getl32 (contents + rel->r_offset);
2d0ca824 6638 bfd_putl32 (movk_R0 | (insn & 0x1f), contents + rel->r_offset);
a06ea964
NC		 6639 }
6640 return bfd_reloc_continue;
6641
259364ad
JW		 6642 case BFD_RELOC_AARCH64_TLSLD_ADR_PREL21:
6643 /* LD->LE relaxation (tiny):
6644 adr x0, :tlsldm:x => mrs x0, tpidr_el0
c1fc2d7e
YN		 6645 bl __tls_get_addr => add R0, R0, TCB_SIZE
6646
6647 Where R is x for lp64 mode, and w for ilp32 mode. */
259364ad
JW		 6648 if (is_local)
6649 {
6650 BFD_ASSERT (rel->r_offset + 4 == rel[1].r_offset);
6651 BFD_ASSERT (ELFNN_R_TYPE (rel[1].r_info) == AARCH64_R (CALL26));
6652 /* No need of CALL26 relocation for tls_get_addr. */
6653 rel[1].r_info = ELFNN_R_INFO (STN_UNDEF, R_AARCH64_NONE);
6654 bfd_putl32 (0xd53bd040, contents + rel->r_offset + 0);
2d0ca824
YN		 6655 bfd_putl32 (add_R0_R0 | (TCB_SIZE << 10),
6656 contents + rel->r_offset + 4);
259364ad
JW		 6657 return bfd_reloc_ok;
6658 }
6659 return bfd_reloc_continue;
6660
6661 case BFD_RELOC_AARCH64_TLSLD_ADR_PAGE21:
6662 /* LD->LE relaxation (small):
6663 adrp x0, :tlsldm:x => mrs x0, tpidr_el0
6664 */
6665 if (is_local)
6666 {
6667 bfd_putl32 (0xd53bd040, contents + rel->r_offset);
6668 return bfd_reloc_ok;
6669 }
6670 return bfd_reloc_continue;
6671
6672 case BFD_RELOC_AARCH64_TLSLD_ADD_LO12_NC:
6673 /* LD->LE relaxation (small):
c1fc2d7e 6674 add x0, #:tlsldm_lo12:x => add R0, R0, TCB_SIZE
259364ad 6675 bl __tls_get_addr => nop
c1fc2d7e
YN		 6676
6677 Where R is x for lp64 mode, and w for ilp32 mode. */
259364ad
JW		 6678 if (is_local)
6679 {
6680 BFD_ASSERT (rel->r_offset + 4 == rel[1].r_offset);
6681 BFD_ASSERT (ELFNN_R_TYPE (rel[1].r_info) == AARCH64_R (CALL26));
6682 /* No need of CALL26 relocation for tls_get_addr. */
6683 rel[1].r_info = ELFNN_R_INFO (STN_UNDEF, R_AARCH64_NONE);
2d0ca824
YN		 6684 bfd_putl32 (add_R0_R0 | (TCB_SIZE << 10),
6685 contents + rel->r_offset + 0);
c1fc2d7e 6686 bfd_putl32 (INSN_NOP, contents + rel->r_offset + 4);
259364ad
JW		 6687 return bfd_reloc_ok;
6688 }
6689 return bfd_reloc_continue;
6690
a06ea964
NC		 6691 default:
6692 return bfd_reloc_continue;
6693 }
6694
6695 return bfd_reloc_ok;
6696}
6697
6698/* Relocate an AArch64 ELF section. */
6699
6700static bfd_boolean
cec5225b 6701elfNN_aarch64_relocate_section (bfd *output_bfd,
a06ea964
NC		 6702 struct bfd_link_info *info,
6703 bfd *input_bfd,
6704 asection *input_section,
6705 bfd_byte *contents,
6706 Elf_Internal_Rela *relocs,
6707 Elf_Internal_Sym *local_syms,
6708 asection **local_sections)
6709{
6710 Elf_Internal_Shdr *symtab_hdr;
6711 struct elf_link_hash_entry **sym_hashes;
6712 Elf_Internal_Rela *rel;
6713 Elf_Internal_Rela *relend;
6714 const char *name;
cec5225b 6715 struct elf_aarch64_link_hash_table *globals;
a06ea964
NC		 6716 bfd_boolean save_addend = FALSE;
6717 bfd_vma addend = 0;
6718
cec5225b 6719 globals = elf_aarch64_hash_table (info);
a06ea964
NC		 6720
6721 symtab_hdr = &elf_symtab_hdr (input_bfd);
6722 sym_hashes = elf_sym_hashes (input_bfd);
6723
6724 rel = relocs;
6725 relend = relocs + input_section->reloc_count;
6726 for (; rel < relend; rel++)
6727 {
6728 unsigned int r_type;
a6bb11b2
YZ		 6729 bfd_reloc_code_real_type bfd_r_type;
6730 bfd_reloc_code_real_type relaxed_bfd_r_type;
a06ea964
NC		 6731 reloc_howto_type *howto;
6732 unsigned long r_symndx;
6733 Elf_Internal_Sym *sym;
6734 asection *sec;
6735 struct elf_link_hash_entry *h;
6736 bfd_vma relocation;
6737 bfd_reloc_status_type r;
6738 arelent bfd_reloc;
6739 char sym_type;
6740 bfd_boolean unresolved_reloc = FALSE;
6741 char *error_message = NULL;
6742
cec5225b
YZ		 6743 r_symndx = ELFNN_R_SYM (rel->r_info);
6744 r_type = ELFNN_R_TYPE (rel->r_info);
a06ea964 6745
0aa13fee
AM		 6746 bfd_reloc.howto = elfNN_aarch64_howto_from_type (input_bfd, r_type);
6747 howto = bfd_reloc.howto;
a06ea964 6748
7fcfd62d 6749 if (howto == NULL)
47aeb64c
NC		 6750 return _bfd_unrecognized_reloc (input_bfd, input_section, r_type);
6751
a6bb11b2 6752 bfd_r_type = elfNN_aarch64_bfd_reloc_from_howto (howto);
7fcfd62d 6753
a06ea964
NC		 6754 h = NULL;
6755 sym = NULL;
6756 sec = NULL;
6757
6758 if (r_symndx < symtab_hdr->sh_info)
6759 {
6760 sym = local_syms + r_symndx;
cec5225b 6761 sym_type = ELFNN_ST_TYPE (sym->st_info);
a06ea964
NC		 6762 sec = local_sections[r_symndx];
6763
6764 /* An object file might have a reference to a local
6765 undefined symbol. This is a daft object file, but we
6766 should at least do something about it. */
6767 if (r_type != R_AARCH64_NONE && r_type != R_AARCH64_NULL
6768 && bfd_is_und_section (sec)
6769 && ELF_ST_BIND (sym->st_info) != STB_WEAK)
1a72702b
AM		 6770 (*info->callbacks->undefined_symbol)
6771 (info, bfd_elf_string_from_elf_section
6772 (input_bfd, symtab_hdr->sh_link, sym->st_name),
6773 input_bfd, input_section, rel->r_offset, TRUE);
a06ea964 6774
a06ea964 6775 relocation = _bfd_elf_rela_local_sym (output_bfd, sym, &sec, rel);
1419bbe5
WN		 6776
6777 /* Relocate against local STT_GNU_IFUNC symbol. */
0e1862bb 6778 if (!bfd_link_relocatable (info)
1419bbe5
WN		 6779 && ELF_ST_TYPE (sym->st_info) == STT_GNU_IFUNC)
6780 {
6781 h = elfNN_aarch64_get_local_sym_hash (globals, input_bfd,
6782 rel, FALSE);
6783 if (h == NULL)
6784 abort ();
6785
6786 /* Set STT_GNU_IFUNC symbol value. */
6787 h->root.u.def.value = sym->st_value;
6788 h->root.u.def.section = sec;
6789 }
a06ea964
NC		 6790 }
6791 else
6792 {
62d887d4 6793 bfd_boolean warned, ignored;
a06ea964
NC		 6794
6795 RELOC_FOR_GLOBAL_SYMBOL (info, input_bfd, input_section, rel,
6796 r_symndx, symtab_hdr, sym_hashes,
6797 h, sec, relocation,
62d887d4 6798 unresolved_reloc, warned, ignored);
a06ea964
NC		 6799
6800 sym_type = h->type;
6801 }
6802
6803 if (sec != NULL && discarded_section (sec))
6804 RELOC_AGAINST_DISCARDED_SECTION (info, input_bfd, input_section,
6805 rel, 1, relend, howto, 0, contents);
6806
0e1862bb 6807 if (bfd_link_relocatable (info))
2e0488d3 6808 continue;
a06ea964
NC		 6809
6810 if (h != NULL)
6811 name = h->root.root.string;
6812 else
6813 {
6814 name = (bfd_elf_string_from_elf_section
6815 (input_bfd, symtab_hdr->sh_link, sym->st_name));
6816 if (name == NULL || *name == '\0')
fd361982 6817 name = bfd_section_name (sec);
a06ea964
NC		 6818 }
6819
6820 if (r_symndx != 0
6821 && r_type != R_AARCH64_NONE
6822 && r_type != R_AARCH64_NULL
6823 && (h == NULL
6824 || h->root.type == bfd_link_hash_defined
6825 || h->root.type == bfd_link_hash_defweak)
a6bb11b2 6826 && IS_AARCH64_TLS_RELOC (bfd_r_type) != (sym_type == STT_TLS))
a06ea964 6827 {
4eca0228 6828 _bfd_error_handler
a06ea964 6829 ((sym_type == STT_TLS
695344c0 6830 /* xgettext:c-format */
2dcf00ce 6831 ? _("%pB(%pA+%#" PRIx64 "): %s used with TLS symbol %s")
695344c0 6832 /* xgettext:c-format */
2dcf00ce 6833 : _("%pB(%pA+%#" PRIx64 "): %s used with non-TLS symbol %s")),
a06ea964 6834 input_bfd,
2dcf00ce 6835 input_section, (uint64_t) rel->r_offset, howto->name, name);
a06ea964
NC		 6836 }
6837
a06ea964 6838 /* We relax only if we can see that there can be a valid transition
07d6d2b8
AM		 6839 from a reloc type to another.
6840 We call elfNN_aarch64_final_link_relocate unless we're completely
6841 done, i.e., the relaxation produced the final output we want. */
a06ea964 6842
a6bb11b2
YZ		 6843 relaxed_bfd_r_type = aarch64_tls_transition (input_bfd, info, r_type,
6844 h, r_symndx);
6845 if (relaxed_bfd_r_type != bfd_r_type)
a06ea964 6846 {
a6bb11b2
YZ		 6847 bfd_r_type = relaxed_bfd_r_type;
6848 howto = elfNN_aarch64_howto_from_bfd_reloc (bfd_r_type);
6849 BFD_ASSERT (howto != NULL);
6850 r_type = howto->type;
9fca35fc
TC		 6851 r = elfNN_aarch64_tls_relax (globals, input_bfd, input_section,
6852 contents, rel, h);
a06ea964
NC		 6853 unresolved_reloc = 0;
6854 }
6855 else
6856 r = bfd_reloc_continue;
6857
6858 /* There may be multiple consecutive relocations for the
07d6d2b8
AM		 6859 same offset. In that case we are supposed to treat the
6860 output of each relocation as the addend for the next. */
a06ea964
NC		 6861 if (rel + 1 < relend
6862 && rel->r_offset == rel[1].r_offset
cec5225b
YZ		 6863 && ELFNN_R_TYPE (rel[1].r_info) != R_AARCH64_NONE
6864 && ELFNN_R_TYPE (rel[1].r_info) != R_AARCH64_NULL)
a06ea964
NC		 6865 save_addend = TRUE;
6866 else
6867 save_addend = FALSE;
6868
6869 if (r == bfd_reloc_continue)
cec5225b 6870 r = elfNN_aarch64_final_link_relocate (howto, input_bfd, output_bfd,
a06ea964
NC		 6871 input_section, contents, rel,
6872 relocation, info, sec,
6873 h, &unresolved_reloc,
1419bbe5 6874 save_addend, &addend, sym);
a06ea964 6875
0aa13fee 6876 switch (elfNN_aarch64_bfd_reloc_from_type (input_bfd, r_type))
a06ea964 6877 {
ce336788 6878 case BFD_RELOC_AARCH64_TLSGD_ADD_LO12_NC:
a6bb11b2 6879 case BFD_RELOC_AARCH64_TLSGD_ADR_PAGE21:
3c12b054 6880 case BFD_RELOC_AARCH64_TLSGD_ADR_PREL21:
7ba7cfe4 6881 case BFD_RELOC_AARCH64_TLSGD_MOVW_G0_NC:
94facae3 6882 case BFD_RELOC_AARCH64_TLSGD_MOVW_G1:
73f925cc 6883 case BFD_RELOC_AARCH64_TLSLD_ADD_LO12_NC:
f69e4920 6884 case BFD_RELOC_AARCH64_TLSLD_ADR_PAGE21:
77a69ff8 6885 case BFD_RELOC_AARCH64_TLSLD_ADR_PREL21:
a06ea964
NC		 6886 if (! symbol_got_offset_mark_p (input_bfd, h, r_symndx))
6887 {
6888 bfd_boolean need_relocs = FALSE;
6889 bfd_byte *loc;
6890 int indx;
6891 bfd_vma off;
6892
6893 off = symbol_got_offset (input_bfd, h, r_symndx);
6894 indx = h && h->dynindx != -1 ? h->dynindx : 0;
6895
6896 need_relocs =
6dda7875 6897 (!bfd_link_executable (info) || indx != 0) &&
a06ea964
NC		 6898 (h == NULL
6899 || ELF_ST_VISIBILITY (h->other) == STV_DEFAULT
6900 || h->root.type != bfd_link_hash_undefweak);
6901
6902 BFD_ASSERT (globals->root.srelgot != NULL);
6903
6904 if (need_relocs)
6905 {
6906 Elf_Internal_Rela rela;
a6bb11b2 6907 rela.r_info = ELFNN_R_INFO (indx, AARCH64_R (TLS_DTPMOD));
a06ea964
NC		 6908 rela.r_addend = 0;
6909 rela.r_offset = globals->root.sgot->output_section->vma +
6910 globals->root.sgot->output_offset + off;
6911
6912
6913 loc = globals->root.srelgot->contents;
6914 loc += globals->root.srelgot->reloc_count++
6915 * RELOC_SIZE (htab);
cec5225b 6916 bfd_elfNN_swap_reloca_out (output_bfd, &rela, loc);
a06ea964 6917
f69e4920 6918 bfd_reloc_code_real_type real_type =
0aa13fee 6919 elfNN_aarch64_bfd_reloc_from_type (input_bfd, r_type);
f69e4920
JW		 6920
6921 if (real_type == BFD_RELOC_AARCH64_TLSLD_ADR_PREL21
73f925cc
JW		 6922 || real_type == BFD_RELOC_AARCH64_TLSLD_ADR_PAGE21
6923 || real_type == BFD_RELOC_AARCH64_TLSLD_ADD_LO12_NC)
77a69ff8
JW		 6924 {
6925 /* For local dynamic, don't generate DTPREL in any case.
6926 Initialize the DTPREL slot into zero, so we get module
6927 base address when invoke runtime TLS resolver. */
6928 bfd_put_NN (output_bfd, 0,
6929 globals->root.sgot->contents + off
6930 + GOT_ENTRY_SIZE);
6931 }
6932 else if (indx == 0)
a06ea964 6933 {
cec5225b 6934 bfd_put_NN (output_bfd,
a06ea964
NC		 6935 relocation - dtpoff_base (info),
6936 globals->root.sgot->contents + off
6937 + GOT_ENTRY_SIZE);
6938 }
6939 else
6940 {
6941 /* This TLS symbol is global. We emit a
6942 relocation to fixup the tls offset at load
6943 time. */
6944 rela.r_info =
a6bb11b2 6945 ELFNN_R_INFO (indx, AARCH64_R (TLS_DTPREL));
a06ea964
NC		 6946 rela.r_addend = 0;
6947 rela.r_offset =
6948 (globals->root.sgot->output_section->vma
6949 + globals->root.sgot->output_offset + off
6950 + GOT_ENTRY_SIZE);
6951
6952 loc = globals->root.srelgot->contents;
6953 loc += globals->root.srelgot->reloc_count++
6954 * RELOC_SIZE (globals);
cec5225b
YZ		 6955 bfd_elfNN_swap_reloca_out (output_bfd, &rela, loc);
6956 bfd_put_NN (output_bfd, (bfd_vma) 0,
a06ea964
NC		 6957 globals->root.sgot->contents + off
6958 + GOT_ENTRY_SIZE);
6959 }
6960 }
6961 else
6962 {
cec5225b 6963 bfd_put_NN (output_bfd, (bfd_vma) 1,
a06ea964 6964 globals->root.sgot->contents + off);
cec5225b 6965 bfd_put_NN (output_bfd,
a06ea964
NC		 6966 relocation - dtpoff_base (info),
6967 globals->root.sgot->contents + off
6968 + GOT_ENTRY_SIZE);
6969 }
6970
6971 symbol_got_offset_mark (input_bfd, h, r_symndx);
6972 }
6973 break;
6974
a6bb11b2
YZ		 6975 case BFD_RELOC_AARCH64_TLSIE_ADR_GOTTPREL_PAGE21:
6976 case BFD_RELOC_AARCH64_TLSIE_LDNN_GOTTPREL_LO12_NC:
043bf05a 6977 case BFD_RELOC_AARCH64_TLSIE_LD_GOTTPREL_PREL19:
3b957e5b
RL		 6978 case BFD_RELOC_AARCH64_TLSIE_MOVW_GOTTPREL_G0_NC:
6979 case BFD_RELOC_AARCH64_TLSIE_MOVW_GOTTPREL_G1:
a06ea964
NC		 6980 if (! symbol_got_offset_mark_p (input_bfd, h, r_symndx))
6981 {
6982 bfd_boolean need_relocs = FALSE;
6983 bfd_byte *loc;
6984 int indx;
6985 bfd_vma off;
6986
6987 off = symbol_got_offset (input_bfd, h, r_symndx);
6988
6989 indx = h && h->dynindx != -1 ? h->dynindx : 0;
6990
6991 need_relocs =
6dda7875 6992 (!bfd_link_executable (info) || indx != 0) &&
a06ea964
NC		 6993 (h == NULL
6994 || ELF_ST_VISIBILITY (h->other) == STV_DEFAULT
6995 || h->root.type != bfd_link_hash_undefweak);
6996
6997 BFD_ASSERT (globals->root.srelgot != NULL);
6998
6999 if (need_relocs)
7000 {
7001 Elf_Internal_Rela rela;
7002
7003 if (indx == 0)
7004 rela.r_addend = relocation - dtpoff_base (info);
7005 else
7006 rela.r_addend = 0;
7007
a6bb11b2 7008 rela.r_info = ELFNN_R_INFO (indx, AARCH64_R (TLS_TPREL));
a06ea964
NC		 7009 rela.r_offset = globals->root.sgot->output_section->vma +
7010 globals->root.sgot->output_offset + off;
7011
7012 loc = globals->root.srelgot->contents;
7013 loc += globals->root.srelgot->reloc_count++
7014 * RELOC_SIZE (htab);
7015
cec5225b 7016 bfd_elfNN_swap_reloca_out (output_bfd, &rela, loc);
a06ea964 7017
cec5225b 7018 bfd_put_NN (output_bfd, rela.r_addend,
a06ea964
NC		 7019 globals->root.sgot->contents + off);
7020 }
7021 else
cec5225b 7022 bfd_put_NN (output_bfd, relocation - tpoff_base (info),
a06ea964
NC		 7023 globals->root.sgot->contents + off);
7024
7025 symbol_got_offset_mark (input_bfd, h, r_symndx);
7026 }
7027 break;
7028
f955cccf 7029 case BFD_RELOC_AARCH64_TLSDESC_ADD_LO12:
a6bb11b2 7030 case BFD_RELOC_AARCH64_TLSDESC_ADR_PAGE21:
389b8029 7031 case BFD_RELOC_AARCH64_TLSDESC_ADR_PREL21:
a6bb11b2 7032 case BFD_RELOC_AARCH64_TLSDESC_LDNN_LO12_NC:
1ada945d 7033 case BFD_RELOC_AARCH64_TLSDESC_LD_PREL19:
0484b454
RL		 7034 case BFD_RELOC_AARCH64_TLSDESC_OFF_G0_NC:
7035 case BFD_RELOC_AARCH64_TLSDESC_OFF_G1:
a06ea964
NC		 7036 if (! symbol_tlsdesc_got_offset_mark_p (input_bfd, h, r_symndx))
7037 {
7038 bfd_boolean need_relocs = FALSE;
7039 int indx = h && h->dynindx != -1 ? h->dynindx : 0;
7040 bfd_vma off = symbol_tlsdesc_got_offset (input_bfd, h, r_symndx);
7041
7042 need_relocs = (h == NULL
7043 || ELF_ST_VISIBILITY (h->other) == STV_DEFAULT
7044 || h->root.type != bfd_link_hash_undefweak);
7045
7046 BFD_ASSERT (globals->root.srelgot != NULL);
7047 BFD_ASSERT (globals->root.sgot != NULL);
7048
7049 if (need_relocs)
7050 {
7051 bfd_byte *loc;
7052 Elf_Internal_Rela rela;
a6bb11b2
YZ		 7053 rela.r_info = ELFNN_R_INFO (indx, AARCH64_R (TLSDESC));
7054
a06ea964
NC		 7055 rela.r_addend = 0;
7056 rela.r_offset = (globals->root.sgotplt->output_section->vma
7057 + globals->root.sgotplt->output_offset
7058 + off + globals->sgotplt_jump_table_size);
7059
7060 if (indx == 0)
7061 rela.r_addend = relocation - dtpoff_base (info);
7062
7063 /* Allocate the next available slot in the PLT reloc
7064 section to hold our R_AARCH64_TLSDESC, the next
7065 available slot is determined from reloc_count,
7066 which we step. But note, reloc_count was
7067 artifically moved down while allocating slots for
7068 real PLT relocs such that all of the PLT relocs
7069 will fit above the initial reloc_count and the
7070 extra stuff will fit below. */
7071 loc = globals->root.srelplt->contents;
7072 loc += globals->root.srelplt->reloc_count++
7073 * RELOC_SIZE (globals);
7074
cec5225b 7075 bfd_elfNN_swap_reloca_out (output_bfd, &rela, loc);
a06ea964 7076
cec5225b 7077 bfd_put_NN (output_bfd, (bfd_vma) 0,
a06ea964
NC		 7078 globals->root.sgotplt->contents + off +
7079 globals->sgotplt_jump_table_size);
cec5225b 7080 bfd_put_NN (output_bfd, (bfd_vma) 0,
a06ea964
NC		 7081 globals->root.sgotplt->contents + off +
7082 globals->sgotplt_jump_table_size +
7083 GOT_ENTRY_SIZE);
7084 }
7085
7086 symbol_tlsdesc_got_offset_mark (input_bfd, h, r_symndx);
7087 }
7088 break;
a6bb11b2
YZ		 7089 default:
7090 break;
a06ea964
NC		 7091 }
7092
a06ea964 7093 /* Dynamic relocs are not propagated for SEC_DEBUGGING sections
07d6d2b8
AM		 7094 because such sections are not SEC_ALLOC and thus ld.so will
7095 not process them. */
a06ea964
NC		 7096 if (unresolved_reloc
7097 && !((input_section->flags & SEC_DEBUGGING) != 0
7098 && h->def_dynamic)
7099 && _bfd_elf_section_offset (output_bfd, info, input_section,
7100 +rel->r_offset) != (bfd_vma) - 1)
7101 {
4eca0228 7102 _bfd_error_handler
695344c0 7103 /* xgettext:c-format */
2dcf00ce
AM		 7104 (_("%pB(%pA+%#" PRIx64 "): "
7105 "unresolvable %s relocation against symbol `%s'"),
7106 input_bfd, input_section, (uint64_t) rel->r_offset, howto->name,
a06ea964
NC		 7107 h->root.root.string);
7108 return FALSE;
7109 }
7110
7111 if (r != bfd_reloc_ok && r != bfd_reloc_continue)
7112 {
c674f5cd 7113 bfd_reloc_code_real_type real_r_type
0aa13fee 7114 = elfNN_aarch64_bfd_reloc_from_type (input_bfd, r_type);
c674f5cd 7115
a06ea964
NC		 7116 switch (r)
7117 {
7118 case bfd_reloc_overflow:
1a72702b
AM		 7119 (*info->callbacks->reloc_overflow)
7120 (info, (h ? &h->root : NULL), name, howto->name, (bfd_vma) 0,
7121 input_bfd, input_section, rel->r_offset);
c674f5cd
JW		 7122 if (real_r_type == BFD_RELOC_AARCH64_LD64_GOTPAGE_LO15
7123 || real_r_type == BFD_RELOC_AARCH64_LD32_GOTPAGE_LO14)
7124 {
7125 (*info->callbacks->warning)
7126 (info,
90b6238f 7127 _("too many GOT entries for -fpic, "
c674f5cd
JW		 7128 "please recompile with -fPIC"),
7129 name, input_bfd, input_section, rel->r_offset);
7130 return FALSE;
7131 }
027e9c75
NC		 7132 /* Overflow can occur when a variable is referenced with a type
7133 that has a larger alignment than the type with which it was
7134 declared. eg:
7135 file1.c: extern int foo; int a (void) { return foo; }
7136 file2.c: char bar, foo, baz;
7137 If the variable is placed into a data section at an offset
7138 that is incompatible with the larger alignment requirement
7139 overflow will occur. (Strictly speaking this is not overflow
7140 but rather an alignment problem, but the bfd_reloc_ error
7141 enum does not have a value to cover that situation).
7142
7143 Try to catch this situation here and provide a more helpful
7144 error message to the user. */
26009aa7 7145 if (addend & (((bfd_vma) 1 << howto->rightshift) - 1)
027e9c75
NC		 7146 /* FIXME: Are we testing all of the appropriate reloc
7147 types here ? */
7148 && (real_r_type == BFD_RELOC_AARCH64_LD_LO19_PCREL
7149 || real_r_type == BFD_RELOC_AARCH64_LDST16_LO12
7150 || real_r_type == BFD_RELOC_AARCH64_LDST32_LO12
7151 || real_r_type == BFD_RELOC_AARCH64_LDST64_LO12
7152 || real_r_type == BFD_RELOC_AARCH64_LDST128_LO12))
7153 {
7154 info->callbacks->warning
90b6238f 7155 (info, _("one possible cause of this error is that the \
027e9c75 7156symbol is being referenced in the indicated code as if it had a larger \
90b6238f 7157alignment than was declared where it was defined"),
027e9c75
NC		 7158 name, input_bfd, input_section, rel->r_offset);
7159 }
a06ea964
NC		 7160 break;
7161
7162 case bfd_reloc_undefined:
1a72702b
AM		 7163 (*info->callbacks->undefined_symbol)
7164 (info, name, input_bfd, input_section, rel->r_offset, TRUE);
a06ea964
NC		 7165 break;
7166
7167 case bfd_reloc_outofrange:
7168 error_message = _("out of range");
7169 goto common_error;
7170
7171 case bfd_reloc_notsupported:
7172 error_message = _("unsupported relocation");
7173 goto common_error;
7174
7175 case bfd_reloc_dangerous:
7176 /* error_message should already be set. */
7177 goto common_error;
7178
7179 default:
7180 error_message = _("unknown error");
7181 /* Fall through. */
7182
7183 common_error:
7184 BFD_ASSERT (error_message != NULL);
1a72702b
AM		 7185 (*info->callbacks->reloc_dangerous)
7186 (info, error_message, input_bfd, input_section, rel->r_offset);
a06ea964
NC		 7187 break;
7188 }
7189 }
027e9c75
NC		 7190
7191 if (!save_addend)
7192 addend = 0;
a06ea964
NC		 7193 }
7194
7195 return TRUE;
7196}
7197
7198/* Set the right machine number. */
7199
7200static bfd_boolean
cec5225b 7201elfNN_aarch64_object_p (bfd *abfd)
a06ea964 7202{
cec5225b
YZ		 7203#if ARCH_SIZE == 32
7204 bfd_default_set_arch_mach (abfd, bfd_arch_aarch64, bfd_mach_aarch64_ilp32);
7205#else
a06ea964 7206 bfd_default_set_arch_mach (abfd, bfd_arch_aarch64, bfd_mach_aarch64);
cec5225b 7207#endif
a06ea964
NC		 7208 return TRUE;
7209}
7210
7211/* Function to keep AArch64 specific flags in the ELF header. */
7212
7213static bfd_boolean
cec5225b 7214elfNN_aarch64_set_private_flags (bfd *abfd, flagword flags)
a06ea964
NC		 7215{
7216 if (elf_flags_init (abfd) && elf_elfheader (abfd)->e_flags != flags)
7217 {
7218 }
7219 else
7220 {
7221 elf_elfheader (abfd)->e_flags = flags;
7222 elf_flags_init (abfd) = TRUE;
7223 }
7224
7225 return TRUE;
7226}
7227
a06ea964
NC		 7228/* Merge backend specific data from an object file to the output
7229 object file when linking. */
7230
7231static bfd_boolean
50e03d47 7232elfNN_aarch64_merge_private_bfd_data (bfd *ibfd, struct bfd_link_info *info)
a06ea964 7233{
50e03d47 7234 bfd *obfd = info->output_bfd;
a06ea964
NC		 7235 flagword out_flags;
7236 flagword in_flags;
7237 bfd_boolean flags_compatible = TRUE;
7238 asection *sec;
7239
7240 /* Check if we have the same endianess. */
50e03d47 7241 if (!_bfd_generic_verify_endian_match (ibfd, info))
a06ea964
NC		 7242 return FALSE;
7243
7244 if (!is_aarch64_elf (ibfd) || !is_aarch64_elf (obfd))
7245 return TRUE;
7246
7247 /* The input BFD must have had its flags initialised. */
7248 /* The following seems bogus to me -- The flags are initialized in
7249 the assembler but I don't think an elf_flags_init field is
7250 written into the object. */
7251 /* BFD_ASSERT (elf_flags_init (ibfd)); */
7252
7253 in_flags = elf_elfheader (ibfd)->e_flags;
7254 out_flags = elf_elfheader (obfd)->e_flags;
7255
7256 if (!elf_flags_init (obfd))
7257 {
7258 /* If the input is the default architecture and had the default
07d6d2b8
AM		 7259 flags then do not bother setting the flags for the output
7260 architecture, instead allow future merges to do this. If no
7261 future merges ever set these flags then they will retain their
7262 uninitialised values, which surprise surprise, correspond
7263 to the default values. */
a06ea964
NC		 7264 if (bfd_get_arch_info (ibfd)->the_default
7265 && elf_elfheader (ibfd)->e_flags == 0)
7266 return TRUE;
7267
7268 elf_flags_init (obfd) = TRUE;
7269 elf_elfheader (obfd)->e_flags = in_flags;
7270
7271 if (bfd_get_arch (obfd) == bfd_get_arch (ibfd)
7272 && bfd_get_arch_info (obfd)->the_default)
7273 return bfd_set_arch_mach (obfd, bfd_get_arch (ibfd),
7274 bfd_get_mach (ibfd));
7275
7276 return TRUE;
7277 }
7278
7279 /* Identical flags must be compatible. */
7280 if (in_flags == out_flags)
7281 return TRUE;
7282
7283 /* Check to see if the input BFD actually contains any sections. If
7284 not, its flags may not have been initialised either, but it
7285 cannot actually cause any incompatiblity. Do not short-circuit
7286 dynamic objects; their section list may be emptied by
7287 elf_link_add_object_symbols.
7288
7289 Also check to see if there are no code sections in the input.
7290 In this case there is no need to check for code specific flags.
7291 XXX - do we need to worry about floating-point format compatability
7292 in data sections ? */
7293 if (!(ibfd->flags & DYNAMIC))
7294 {
7295 bfd_boolean null_input_bfd = TRUE;
7296 bfd_boolean only_data_sections = TRUE;
7297
7298 for (sec = ibfd->sections; sec != NULL; sec = sec->next)
7299 {
fd361982 7300 if ((bfd_section_flags (sec)
a06ea964
NC		 7301 & (SEC_LOAD | SEC_CODE | SEC_HAS_CONTENTS))
7302 == (SEC_LOAD | SEC_CODE | SEC_HAS_CONTENTS))
7303 only_data_sections = FALSE;
7304
7305 null_input_bfd = FALSE;
7306 break;
7307 }
7308
7309 if (null_input_bfd || only_data_sections)
7310 return TRUE;
7311 }
7312
7313 return flags_compatible;
7314}
7315
7316/* Display the flags field. */
7317
7318static bfd_boolean
cec5225b 7319elfNN_aarch64_print_private_bfd_data (bfd *abfd, void *ptr)
a06ea964
NC		 7320{
7321 FILE *file = (FILE *) ptr;
7322 unsigned long flags;
7323
7324 BFD_ASSERT (abfd != NULL && ptr != NULL);
7325
7326 /* Print normal ELF private data. */
7327 _bfd_elf_print_private_bfd_data (abfd, ptr);
7328
7329 flags = elf_elfheader (abfd)->e_flags;
7330 /* Ignore init flag - it may not be set, despite the flags field
7331 containing valid data. */
7332
7333 /* xgettext:c-format */
7334 fprintf (file, _("private flags = %lx:"), elf_elfheader (abfd)->e_flags);
7335
7336 if (flags)
7337 fprintf (file, _("<Unrecognised flag bits set>"));
7338
7339 fputc ('\n', file);
7340
7341 return TRUE;
7342}
7343
6353d82b
JW		 7344/* Return true if we need copy relocation against EH. */
7345
7346static bfd_boolean
7347need_copy_relocation_p (struct elf_aarch64_link_hash_entry *eh)
7348{
7349 struct elf_dyn_relocs *p;
7350 asection *s;
7351
190eb1dd 7352 for (p = eh->root.dyn_relocs; p != NULL; p = p->next)
6353d82b
JW		 7353 {
7354 /* If there is any pc-relative reference, we need to keep copy relocation
7355 to avoid propagating the relocation into runtime that current glibc
7356 does not support. */
7357 if (p->pc_count)
7358 return TRUE;
7359
7360 s = p->sec->output_section;
7361 /* Need copy relocation if it's against read-only section. */
7362 if (s != NULL && (s->flags & SEC_READONLY) != 0)
7363 return TRUE;
7364 }
7365
7366 return FALSE;
7367}
7368
a06ea964
NC		 7369/* Adjust a symbol defined by a dynamic object and referenced by a
7370 regular object. The current definition is in some section of the
7371 dynamic object, but we're not including those sections. We have to
7372 change the definition to something the rest of the link can
7373 understand. */
7374
7375static bfd_boolean
cec5225b 7376elfNN_aarch64_adjust_dynamic_symbol (struct bfd_link_info *info,
a06ea964
NC		 7377 struct elf_link_hash_entry *h)
7378{
cec5225b 7379 struct elf_aarch64_link_hash_table *htab;
5474d94f 7380 asection *s, *srel;
a06ea964
NC		 7381
7382 /* If this is a function, put it in the procedure linkage table. We
7383 will fill in the contents of the procedure linkage table later,
7384 when we know the address of the .got section. */
1419bbe5 7385 if (h->type == STT_FUNC || h->type == STT_GNU_IFUNC || h->needs_plt)
a06ea964
NC		 7386 {
7387 if (h->plt.refcount <= 0
1419bbe5
WN		 7388 || (h->type != STT_GNU_IFUNC
7389 && (SYMBOL_CALLS_LOCAL (info, h)
7390 || (ELF_ST_VISIBILITY (h->other) != STV_DEFAULT
7391 && h->root.type == bfd_link_hash_undefweak))))
a06ea964
NC		 7392 {
7393 /* This case can occur if we saw a CALL26 reloc in
7394 an input file, but the symbol wasn't referred to
7395 by a dynamic object or all references were
7396 garbage collected. In which case we can end up
7397 resolving. */
7398 h->plt.offset = (bfd_vma) - 1;
7399 h->needs_plt = 0;
7400 }
7401
7402 return TRUE;
7403 }
7404 else
80de0c6d 7405 /* Otherwise, reset to -1. */
a06ea964
NC		 7406 h->plt.offset = (bfd_vma) - 1;
7407
7408
7409 /* If this is a weak symbol, and there is a real definition, the
7410 processor independent code will have arranged for us to see the
7411 real definition first, and we can just use the same value. */
60d67dc8 7412 if (h->is_weakalias)
a06ea964 7413 {
60d67dc8
AM		 7414 struct elf_link_hash_entry *def = weakdef (h);
7415 BFD_ASSERT (def->root.type == bfd_link_hash_defined);
7416 h->root.u.def.section = def->root.u.def.section;
7417 h->root.u.def.value = def->root.u.def.value;
a06ea964 7418 if (ELIMINATE_COPY_RELOCS || info->nocopyreloc)
60d67dc8 7419 h->non_got_ref = def->non_got_ref;
a06ea964
NC		 7420 return TRUE;
7421 }
7422
7423 /* If we are creating a shared library, we must presume that the
7424 only references to the symbol are via the global offset table.
7425 For such cases we need not do anything here; the relocations will
7426 be handled correctly by relocate_section. */
0e1862bb 7427 if (bfd_link_pic (info))
a06ea964
NC		 7428 return TRUE;
7429
7430 /* If there are no references to this symbol that do not use the
7431 GOT, we don't need to generate a copy reloc. */
7432 if (!h->non_got_ref)
7433 return TRUE;
7434
7435 /* If -z nocopyreloc was given, we won't generate them either. */
7436 if (info->nocopyreloc)
7437 {
7438 h->non_got_ref = 0;
7439 return TRUE;
7440 }
7441
6353d82b
JW		 7442 if (ELIMINATE_COPY_RELOCS)
7443 {
7444 struct elf_aarch64_link_hash_entry *eh;
dce2246a 7445 /* If we don't find any dynamic relocs in read-only sections, then
6353d82b
JW		 7446 we'll be keeping the dynamic relocs and avoiding the copy reloc. */
7447 eh = (struct elf_aarch64_link_hash_entry *) h;
7448 if (!need_copy_relocation_p (eh))
7449 {
7450 h->non_got_ref = 0;
7451 return TRUE;
7452 }
7453 }
7454
a06ea964
NC		 7455 /* We must allocate the symbol in our .dynbss section, which will
7456 become part of the .bss section of the executable. There will be
7457 an entry for this symbol in the .dynsym section. The dynamic
7458 object will contain position independent code, so all references
7459 from the dynamic object to this symbol will go through the global
7460 offset table. The dynamic linker will use the .dynsym entry to
7461 determine the address it must put in the global offset table, so
7462 both the dynamic object and the regular object will refer to the
7463 same memory location for the variable. */
7464
cec5225b 7465 htab = elf_aarch64_hash_table (info);
a06ea964
NC		 7466
7467 /* We must generate a R_AARCH64_COPY reloc to tell the dynamic linker
7468 to copy the initial value out of the dynamic object and into the
7469 runtime process image. */
5474d94f
AM		 7470 if ((h->root.u.def.section->flags & SEC_READONLY) != 0)
7471 {
7472 s = htab->root.sdynrelro;
7473 srel = htab->root.sreldynrelro;
7474 }
7475 else
7476 {
7477 s = htab->root.sdynbss;
7478 srel = htab->root.srelbss;
7479 }
a06ea964
NC		 7480 if ((h->root.u.def.section->flags & SEC_ALLOC) != 0 && h->size != 0)
7481 {
5474d94f 7482 srel->size += RELOC_SIZE (htab);
a06ea964
NC		 7483 h->needs_copy = 1;
7484 }
7485
6cabe1ea 7486 return _bfd_elf_adjust_dynamic_copy (info, h, s);
a06ea964
NC		 7487
7488}
7489
7490static bfd_boolean
cec5225b 7491elfNN_aarch64_allocate_local_symbols (bfd *abfd, unsigned number)
a06ea964
NC		 7492{
7493 struct elf_aarch64_local_symbol *locals;
cec5225b 7494 locals = elf_aarch64_locals (abfd);
a06ea964
NC		 7495 if (locals == NULL)
7496 {
7497 locals = (struct elf_aarch64_local_symbol *)
7498 bfd_zalloc (abfd, number * sizeof (struct elf_aarch64_local_symbol));
7499 if (locals == NULL)
7500 return FALSE;
cec5225b 7501 elf_aarch64_locals (abfd) = locals;
a06ea964
NC		 7502 }
7503 return TRUE;
7504}
7505
cc0efaa8
MS		 7506/* Create the .got section to hold the global offset table. */
7507
7508static bfd_boolean
7509aarch64_elf_create_got_section (bfd *abfd, struct bfd_link_info *info)
7510{
7511 const struct elf_backend_data *bed = get_elf_backend_data (abfd);
7512 flagword flags;
7513 asection *s;
7514 struct elf_link_hash_entry *h;
7515 struct elf_link_hash_table *htab = elf_hash_table (info);
7516
7517 /* This function may be called more than once. */
ce558b89 7518 if (htab->sgot != NULL)
cc0efaa8
MS		 7519 return TRUE;
7520
7521 flags = bed->dynamic_sec_flags;
7522
7523 s = bfd_make_section_anyway_with_flags (abfd,
7524 (bed->rela_plts_and_copies_p
7525 ? ".rela.got" : ".rel.got"),
7526 (bed->dynamic_sec_flags
7527 | SEC_READONLY));
7528 if (s == NULL
fd361982 7529 || !bfd_set_section_alignment (s, bed->s->log_file_align))
cc0efaa8
MS		 7530 return FALSE;
7531 htab->srelgot = s;
7532
7533 s = bfd_make_section_anyway_with_flags (abfd, ".got", flags);
7534 if (s == NULL
fd361982 7535 || !bfd_set_section_alignment (s, bed->s->log_file_align))
cc0efaa8
MS		 7536 return FALSE;
7537 htab->sgot = s;
7538 htab->sgot->size += GOT_ENTRY_SIZE;
7539
7540 if (bed->want_got_sym)
7541 {
7542 /* Define the symbol _GLOBAL_OFFSET_TABLE_ at the start of the .got
7543 (or .got.plt) section. We don't do this in the linker script
7544 because we don't want to define the symbol if we are not creating
7545 a global offset table. */
7546 h = _bfd_elf_define_linkage_sym (abfd, info, s,
7547 "_GLOBAL_OFFSET_TABLE_");
7548 elf_hash_table (info)->hgot = h;
7549 if (h == NULL)
7550 return FALSE;
7551 }
7552
7553 if (bed->want_got_plt)
7554 {
7555 s = bfd_make_section_anyway_with_flags (abfd, ".got.plt", flags);
7556 if (s == NULL
fd361982 7557 || !bfd_set_section_alignment (s, bed->s->log_file_align))
cc0efaa8
MS		 7558 return FALSE;
7559 htab->sgotplt = s;
7560 }
7561
7562 /* The first bit of the global offset table is the header. */
7563 s->size += bed->got_header_size;
7564
7565 return TRUE;
7566}
7567
a06ea964
NC		 7568/* Look through the relocs for a section during the first phase. */
7569
7570static bfd_boolean
cec5225b 7571elfNN_aarch64_check_relocs (bfd *abfd, struct bfd_link_info *info,
a06ea964
NC		 7572 asection *sec, const Elf_Internal_Rela *relocs)
7573{
7574 Elf_Internal_Shdr *symtab_hdr;
7575 struct elf_link_hash_entry **sym_hashes;
7576 const Elf_Internal_Rela *rel;
7577 const Elf_Internal_Rela *rel_end;
7578 asection *sreloc;
7579
cec5225b 7580 struct elf_aarch64_link_hash_table *htab;
a06ea964 7581
0e1862bb 7582 if (bfd_link_relocatable (info))
a06ea964
NC		 7583 return TRUE;
7584
7585 BFD_ASSERT (is_aarch64_elf (abfd));
7586
cec5225b 7587 htab = elf_aarch64_hash_table (info);
a06ea964
NC		 7588 sreloc = NULL;
7589
7590 symtab_hdr = &elf_symtab_hdr (abfd);
7591 sym_hashes = elf_sym_hashes (abfd);
a06ea964
NC		 7592
7593 rel_end = relocs + sec->reloc_count;
7594 for (rel = relocs; rel < rel_end; rel++)
7595 {
7596 struct elf_link_hash_entry *h;
d42c267e 7597 unsigned int r_symndx;
a06ea964 7598 unsigned int r_type;
a6bb11b2 7599 bfd_reloc_code_real_type bfd_r_type;
1419bbe5 7600 Elf_Internal_Sym *isym;
a06ea964 7601
cec5225b
YZ		 7602 r_symndx = ELFNN_R_SYM (rel->r_info);
7603 r_type = ELFNN_R_TYPE (rel->r_info);
a06ea964
NC		 7604
7605 if (r_symndx >= NUM_SHDR_ENTRIES (symtab_hdr))
7606 {
695344c0 7607 /* xgettext:c-format */
871b3ab2 7608 _bfd_error_handler (_("%pB: bad symbol index: %d"), abfd, r_symndx);
a06ea964
NC		 7609 return FALSE;
7610 }
7611
ed5acf27 7612 if (r_symndx < symtab_hdr->sh_info)
1419bbe5
WN		 7613 {
7614 /* A local symbol. */
f1dfbfdb 7615 isym = bfd_sym_from_r_symndx (&htab->root.sym_cache,
1419bbe5
WN		 7616 abfd, r_symndx);
7617 if (isym == NULL)
7618 return FALSE;
7619
7620 /* Check relocation against local STT_GNU_IFUNC symbol. */
7621 if (ELF_ST_TYPE (isym->st_info) == STT_GNU_IFUNC)
7622 {
7623 h = elfNN_aarch64_get_local_sym_hash (htab, abfd, rel,
7624 TRUE);
7625 if (h == NULL)
7626 return FALSE;
7627
7628 /* Fake a STT_GNU_IFUNC symbol. */
7629 h->type = STT_GNU_IFUNC;
7630 h->def_regular = 1;
7631 h->ref_regular = 1;
7632 h->forced_local = 1;
7633 h->root.type = bfd_link_hash_defined;
7634 }
7635 else
7636 h = NULL;
7637 }
a06ea964
NC		 7638 else
7639 {
7640 h = sym_hashes[r_symndx - symtab_hdr->sh_info];
7641 while (h->root.type == bfd_link_hash_indirect
7642 || h->root.type == bfd_link_hash_warning)
7643 h = (struct elf_link_hash_entry *) h->root.u.i.link;
7644 }
7645
7646 /* Could be done earlier, if h were already available. */
a6bb11b2 7647 bfd_r_type = aarch64_tls_transition (abfd, info, r_type, h, r_symndx);
a06ea964 7648
1419bbe5
WN		 7649 if (h != NULL)
7650 {
18f822a0
JW		 7651 /* If a relocation refers to _GLOBAL_OFFSET_TABLE_, create the .got.
7652 This shows up in particular in an R_AARCH64_PREL64 in large model
7653 when calculating the pc-relative address to .got section which is
7654 used to initialize the gp register. */
7655 if (h->root.root.string
7656 && strcmp (h->root.root.string, "_GLOBAL_OFFSET_TABLE_") == 0)
7657 {
7658 if (htab->root.dynobj == NULL)
7659 htab->root.dynobj = abfd;
7660
7661 if (! aarch64_elf_create_got_section (htab->root.dynobj, info))
7662 return FALSE;
7663
7664 BFD_ASSERT (h == htab->root.hgot);
7665 }
7666
1419bbe5
WN		 7667 /* Create the ifunc sections for static executables. If we
7668 never see an indirect function symbol nor we are building
7669 a static executable, those sections will be empty and
7670 won't appear in output. */
7671 switch (bfd_r_type)
7672 {
7673 default:
7674 break;
7675
ce336788
JW		 7676 case BFD_RELOC_AARCH64_ADD_LO12:
7677 case BFD_RELOC_AARCH64_ADR_GOT_PAGE:
7678 case BFD_RELOC_AARCH64_ADR_HI21_PCREL:
1419bbe5 7679 case BFD_RELOC_AARCH64_CALL26:
ce336788 7680 case BFD_RELOC_AARCH64_GOT_LD_PREL19:
1419bbe5 7681 case BFD_RELOC_AARCH64_JUMP26:
7018c030 7682 case BFD_RELOC_AARCH64_LD32_GOTPAGE_LO14:
1419bbe5 7683 case BFD_RELOC_AARCH64_LD32_GOT_LO12_NC:
a2e1db00 7684 case BFD_RELOC_AARCH64_LD64_GOTOFF_LO15:
99ad26cb 7685 case BFD_RELOC_AARCH64_LD64_GOTPAGE_LO15:
1419bbe5 7686 case BFD_RELOC_AARCH64_LD64_GOT_LO12_NC:
dc8008f5 7687 case BFD_RELOC_AARCH64_MOVW_GOTOFF_G0_NC:
74a1bfe1 7688 case BFD_RELOC_AARCH64_MOVW_GOTOFF_G1:
ce336788 7689 case BFD_RELOC_AARCH64_NN:
1419bbe5
WN		 7690 if (htab->root.dynobj == NULL)
7691 htab->root.dynobj = abfd;
7692 if (!_bfd_elf_create_ifunc_sections (htab->root.dynobj, info))
7693 return FALSE;
7694 break;
7695 }
7696
2d0ca824 7697 /* It is referenced by a non-shared object. */
1419bbe5 7698 h->ref_regular = 1;
1419bbe5
WN		 7699 }
7700
a6bb11b2 7701 switch (bfd_r_type)
a06ea964 7702 {
79e74192
RL		 7703 case BFD_RELOC_AARCH64_16:
7704#if ARCH_SIZE == 64
7705 case BFD_RELOC_AARCH64_32:
7706#endif
279b2f94 7707 if (bfd_link_pic (info) && (sec->flags & SEC_ALLOC) != 0)
79e74192 7708 {
279b2f94
RL		 7709 if (h != NULL
7710 /* This is an absolute symbol. It represents a value instead
7711 of an address. */
c691de6a 7712 && (bfd_is_abs_symbol (&h->root)
279b2f94
RL		 7713 /* This is an undefined symbol. */
7714 || h->root.type == bfd_link_hash_undefined))
7715 break;
7716
7717 /* For local symbols, defined global symbols in a non-ABS section,
7718 it is assumed that the value is an address. */
79e74192
RL		 7719 int howto_index = bfd_r_type - BFD_RELOC_AARCH64_RELOC_START;
7720 _bfd_error_handler
7721 /* xgettext:c-format */
871b3ab2 7722 (_("%pB: relocation %s against `%s' can not be used when making "
79e74192
RL		 7723 "a shared object"),
7724 abfd, elfNN_aarch64_howto_table[howto_index].name,
7725 (h) ? h->root.root.string : "a local symbol");
7726 bfd_set_error (bfd_error_bad_value);
7727 return FALSE;
7728 }
7729 else
7730 break;
7731
6353d82b
JW		 7732 case BFD_RELOC_AARCH64_MOVW_G0_NC:
7733 case BFD_RELOC_AARCH64_MOVW_G1_NC:
7734 case BFD_RELOC_AARCH64_MOVW_G2_NC:
7735 case BFD_RELOC_AARCH64_MOVW_G3:
7736 if (bfd_link_pic (info))
7737 {
7738 int howto_index = bfd_r_type - BFD_RELOC_AARCH64_RELOC_START;
7739 _bfd_error_handler
7740 /* xgettext:c-format */
871b3ab2 7741 (_("%pB: relocation %s against `%s' can not be used when making "
6353d82b
JW		 7742 "a shared object; recompile with -fPIC"),
7743 abfd, elfNN_aarch64_howto_table[howto_index].name,
7744 (h) ? h->root.root.string : "a local symbol");
7745 bfd_set_error (bfd_error_bad_value);
7746 return FALSE;
7747 }
7748 /* Fall through. */
7749
7750 case BFD_RELOC_AARCH64_16_PCREL:
7751 case BFD_RELOC_AARCH64_32_PCREL:
7752 case BFD_RELOC_AARCH64_64_PCREL:
7753 case BFD_RELOC_AARCH64_ADD_LO12:
7754 case BFD_RELOC_AARCH64_ADR_HI21_NC_PCREL:
7755 case BFD_RELOC_AARCH64_ADR_HI21_PCREL:
7756 case BFD_RELOC_AARCH64_ADR_LO21_PCREL:
7757 case BFD_RELOC_AARCH64_LDST128_LO12:
7758 case BFD_RELOC_AARCH64_LDST16_LO12:
7759 case BFD_RELOC_AARCH64_LDST32_LO12:
7760 case BFD_RELOC_AARCH64_LDST64_LO12:
7761 case BFD_RELOC_AARCH64_LDST8_LO12:
7762 case BFD_RELOC_AARCH64_LD_LO19_PCREL:
7763 if (h == NULL || bfd_link_pic (info))
7764 break;
7765 /* Fall through. */
7766
a6bb11b2 7767 case BFD_RELOC_AARCH64_NN:
a06ea964
NC		 7768
7769 /* We don't need to handle relocs into sections not going into
7770 the "real" output. */
7771 if ((sec->flags & SEC_ALLOC) == 0)
7772 break;
7773
7774 if (h != NULL)
7775 {
0e1862bb 7776 if (!bfd_link_pic (info))
a06ea964
NC		 7777 h->non_got_ref = 1;
7778
7779 h->plt.refcount += 1;
7780 h->pointer_equality_needed = 1;
7781 }
7782
7783 /* No need to do anything if we're not creating a shared
7784 object. */
6353d82b
JW		 7785 if (!(bfd_link_pic (info)
7786 /* If on the other hand, we are creating an executable, we
7787 may need to keep relocations for symbols satisfied by a
7788 dynamic library if we manage to avoid copy relocs for the
7789 symbol.
7790
7791 NOTE: Currently, there is no support of copy relocs
7792 elimination on pc-relative relocation types, because there is
7793 no dynamic relocation support for them in glibc. We still
7794 record the dynamic symbol reference for them. This is
7795 because one symbol may be referenced by both absolute
7796 relocation (for example, BFD_RELOC_AARCH64_NN) and
7797 pc-relative relocation. We need full symbol reference
7798 information to make correct decision later in
7799 elfNN_aarch64_adjust_dynamic_symbol. */
7800 || (ELIMINATE_COPY_RELOCS
7801 && !bfd_link_pic (info)
7802 && h != NULL
7803 && (h->root.type == bfd_link_hash_defweak
7804 || !h->def_regular))))
a06ea964
NC		 7805 break;
7806
7807 {
7808 struct elf_dyn_relocs *p;
7809 struct elf_dyn_relocs **head;
6353d82b 7810 int howto_index = bfd_r_type - BFD_RELOC_AARCH64_RELOC_START;
a06ea964
NC		 7811
7812 /* We must copy these reloc types into the output file.
7813 Create a reloc section in dynobj and make room for
7814 this reloc. */
7815 if (sreloc == NULL)
7816 {
7817 if (htab->root.dynobj == NULL)
7818 htab->root.dynobj = abfd;
7819
7820 sreloc = _bfd_elf_make_dynamic_reloc_section
0608afa7 7821 (sec, htab->root.dynobj, LOG_FILE_ALIGN, abfd, /*rela? */ TRUE);
a06ea964
NC		 7822
7823 if (sreloc == NULL)
7824 return FALSE;
7825 }
7826
7827 /* If this is a global symbol, we count the number of
7828 relocations we need for this symbol. */
7829 if (h != NULL)
7830 {
190eb1dd 7831 head = &h->dyn_relocs;
a06ea964
NC		 7832 }
7833 else
7834 {
7835 /* Track dynamic relocs needed for local syms too.
7836 We really need local syms available to do this
7837 easily. Oh well. */
7838
7839 asection *s;
7840 void **vpp;
a06ea964 7841
f1dfbfdb 7842 isym = bfd_sym_from_r_symndx (&htab->root.sym_cache,
a06ea964
NC		 7843 abfd, r_symndx);
7844 if (isym == NULL)
7845 return FALSE;
7846
7847 s = bfd_section_from_elf_index (abfd, isym->st_shndx);
7848 if (s == NULL)
7849 s = sec;
7850
7851 /* Beware of type punned pointers vs strict aliasing
7852 rules. */
7853 vpp = &(elf_section_data (s)->local_dynrel);
7854 head = (struct elf_dyn_relocs **) vpp;
7855 }
7856
7857 p = *head;
7858 if (p == NULL || p->sec != sec)
7859 {
986f0783 7860 size_t amt = sizeof *p;
a06ea964
NC		 7861 p = ((struct elf_dyn_relocs *)
7862 bfd_zalloc (htab->root.dynobj, amt));
7863 if (p == NULL)
7864 return FALSE;
7865 p->next = *head;
7866 *head = p;
7867 p->sec = sec;
7868 }
7869
7870 p->count += 1;
7871
6353d82b
JW		 7872 if (elfNN_aarch64_howto_table[howto_index].pc_relative)
7873 p->pc_count += 1;
a06ea964
NC		 7874 }
7875 break;
7876
7877 /* RR: We probably want to keep a consistency check that
7878 there are no dangling GOT_PAGE relocs. */
a6bb11b2 7879 case BFD_RELOC_AARCH64_ADR_GOT_PAGE:
7bcccb57 7880 case BFD_RELOC_AARCH64_GOT_LD_PREL19:
7018c030 7881 case BFD_RELOC_AARCH64_LD32_GOTPAGE_LO14:
7bcccb57 7882 case BFD_RELOC_AARCH64_LD32_GOT_LO12_NC:
a2e1db00 7883 case BFD_RELOC_AARCH64_LD64_GOTOFF_LO15:
99ad26cb 7884 case BFD_RELOC_AARCH64_LD64_GOTPAGE_LO15:
7bcccb57 7885 case BFD_RELOC_AARCH64_LD64_GOT_LO12_NC:
dc8008f5 7886 case BFD_RELOC_AARCH64_MOVW_GOTOFF_G0_NC:
74a1bfe1 7887 case BFD_RELOC_AARCH64_MOVW_GOTOFF_G1:
f955cccf 7888 case BFD_RELOC_AARCH64_TLSDESC_ADD_LO12:
7bcccb57 7889 case BFD_RELOC_AARCH64_TLSDESC_ADR_PAGE21:
389b8029 7890 case BFD_RELOC_AARCH64_TLSDESC_ADR_PREL21:
7bcccb57 7891 case BFD_RELOC_AARCH64_TLSDESC_LD32_LO12_NC:
f955cccf 7892 case BFD_RELOC_AARCH64_TLSDESC_LD64_LO12:
1ada945d 7893 case BFD_RELOC_AARCH64_TLSDESC_LD_PREL19:
0484b454
RL		 7894 case BFD_RELOC_AARCH64_TLSDESC_OFF_G0_NC:
7895 case BFD_RELOC_AARCH64_TLSDESC_OFF_G1:
a6bb11b2 7896 case BFD_RELOC_AARCH64_TLSGD_ADD_LO12_NC:
7bcccb57 7897 case BFD_RELOC_AARCH64_TLSGD_ADR_PAGE21:
3c12b054 7898 case BFD_RELOC_AARCH64_TLSGD_ADR_PREL21:
7ba7cfe4 7899 case BFD_RELOC_AARCH64_TLSGD_MOVW_G0_NC:
94facae3 7900 case BFD_RELOC_AARCH64_TLSGD_MOVW_G1:
a6bb11b2 7901 case BFD_RELOC_AARCH64_TLSIE_ADR_GOTTPREL_PAGE21:
a6bb11b2 7902 case BFD_RELOC_AARCH64_TLSIE_LD32_GOTTPREL_LO12_NC:
7bcccb57 7903 case BFD_RELOC_AARCH64_TLSIE_LD64_GOTTPREL_LO12_NC:
043bf05a 7904 case BFD_RELOC_AARCH64_TLSIE_LD_GOTTPREL_PREL19:
3b957e5b
RL		 7905 case BFD_RELOC_AARCH64_TLSIE_MOVW_GOTTPREL_G0_NC:
7906 case BFD_RELOC_AARCH64_TLSIE_MOVW_GOTTPREL_G1:
73f925cc 7907 case BFD_RELOC_AARCH64_TLSLD_ADD_LO12_NC:
f69e4920 7908 case BFD_RELOC_AARCH64_TLSLD_ADR_PAGE21:
77a69ff8 7909 case BFD_RELOC_AARCH64_TLSLD_ADR_PREL21:
a06ea964
NC		 7910 {
7911 unsigned got_type;
7912 unsigned old_got_type;
7913
a6bb11b2 7914 got_type = aarch64_reloc_got_type (bfd_r_type);
a06ea964
NC		 7915
7916 if (h)
7917 {
7918 h->got.refcount += 1;
cec5225b 7919 old_got_type = elf_aarch64_hash_entry (h)->got_type;
a06ea964
NC		 7920 }
7921 else
7922 {
7923 struct elf_aarch64_local_symbol *locals;
7924
cec5225b 7925 if (!elfNN_aarch64_allocate_local_symbols
a06ea964
NC		 7926 (abfd, symtab_hdr->sh_info))
7927 return FALSE;
7928
cec5225b 7929 locals = elf_aarch64_locals (abfd);
a06ea964
NC		 7930 BFD_ASSERT (r_symndx < symtab_hdr->sh_info);
7931 locals[r_symndx].got_refcount += 1;
7932 old_got_type = locals[r_symndx].got_type;
7933 }
7934
7935 /* If a variable is accessed with both general dynamic TLS
7936 methods, two slots may be created. */
7937 if (GOT_TLS_GD_ANY_P (old_got_type) && GOT_TLS_GD_ANY_P (got_type))
7938 got_type |= old_got_type;
7939
7940 /* We will already have issued an error message if there
7941 is a TLS/non-TLS mismatch, based on the symbol type.
7942 So just combine any TLS types needed. */
7943 if (old_got_type != GOT_UNKNOWN && old_got_type != GOT_NORMAL
7944 && got_type != GOT_NORMAL)
7945 got_type |= old_got_type;
7946
7947 /* If the symbol is accessed by both IE and GD methods, we
7948 are able to relax. Turn off the GD flag, without
7949 messing up with any other kind of TLS types that may be
7950 involved. */
7951 if ((got_type & GOT_TLS_IE) && GOT_TLS_GD_ANY_P (got_type))
7952 got_type &= ~ (GOT_TLSDESC_GD | GOT_TLS_GD);
7953
7954 if (old_got_type != got_type)
7955 {
7956 if (h != NULL)
cec5225b 7957 elf_aarch64_hash_entry (h)->got_type = got_type;
a06ea964
NC		 7958 else
7959 {
7960 struct elf_aarch64_local_symbol *locals;
cec5225b 7961 locals = elf_aarch64_locals (abfd);
a06ea964
NC		 7962 BFD_ASSERT (r_symndx < symtab_hdr->sh_info);
7963 locals[r_symndx].got_type = got_type;
7964 }
7965 }
7966
cc0efaa8
MS		 7967 if (htab->root.dynobj == NULL)
7968 htab->root.dynobj = abfd;
7969 if (! aarch64_elf_create_got_section (htab->root.dynobj, info))
7970 return FALSE;
a06ea964
NC		 7971 break;
7972 }
7973
a6bb11b2
YZ		 7974 case BFD_RELOC_AARCH64_CALL26:
7975 case BFD_RELOC_AARCH64_JUMP26:
a06ea964
NC		 7976 /* If this is a local symbol then we resolve it
7977 directly without creating a PLT entry. */
7978 if (h == NULL)
7979 continue;
7980
7981 h->needs_plt = 1;
1419bbe5
WN		 7982 if (h->plt.refcount <= 0)
7983 h->plt.refcount = 1;
7984 else
7985 h->plt.refcount += 1;
a06ea964 7986 break;
a6bb11b2
YZ		 7987
7988 default:
7989 break;
a06ea964
NC		 7990 }
7991 }
a6bb11b2 7992
a06ea964
NC		 7993 return TRUE;
7994}
7995
7996/* Treat mapping symbols as special target symbols. */
7997
7998static bfd_boolean
cec5225b 7999elfNN_aarch64_is_target_special_symbol (bfd *abfd ATTRIBUTE_UNUSED,
a06ea964
NC		 8000 asymbol *sym)
8001{
8002 return bfd_is_aarch64_special_symbol_name (sym->name,
8003 BFD_AARCH64_SPECIAL_SYM_TYPE_ANY);
8004}
8005
e7679060
AM		 8006/* If the ELF symbol SYM might be a function in SEC, return the
8007 function size and set *CODE_OFF to the function's entry point,
8008 otherwise return zero. */
a06ea964 8009
e7679060
AM		 8010static bfd_size_type
8011elfNN_aarch64_maybe_function_sym (const asymbol *sym, asection *sec,
8012 bfd_vma *code_off)
8013{
8014 bfd_size_type size;
a06ea964 8015
e7679060
AM		 8016 if ((sym->flags & (BSF_SECTION_SYM | BSF_FILE | BSF_OBJECT
8017 | BSF_THREAD_LOCAL | BSF_RELC | BSF_SRELC)) != 0
8018 || sym->section != sec)
8019 return 0;
a06ea964 8020
e7679060
AM		 8021 if (!(sym->flags & BSF_SYNTHETIC))
8022 switch (ELF_ST_TYPE (((elf_symbol_type *) sym)->internal_elf_sym.st_info))
8023 {
a06ea964
NC		 8024 case STT_FUNC:
8025 case STT_NOTYPE:
a06ea964 8026 break;
e7679060
AM		 8027 default:
8028 return 0;
8029 }
a06ea964 8030
e7679060
AM		 8031 if ((sym->flags & BSF_LOCAL)
8032 && bfd_is_aarch64_special_symbol_name (sym->name,
8033 BFD_AARCH64_SPECIAL_SYM_TYPE_ANY))
8034 return 0;
a06ea964 8035
e7679060
AM		 8036 *code_off = sym->value;
8037 size = 0;
8038 if (!(sym->flags & BSF_SYNTHETIC))
8039 size = ((elf_symbol_type *) sym)->internal_elf_sym.st_size;
8040 if (size == 0)
8041 size = 1;
8042 return size;
a06ea964
NC		 8043}
8044
8045static bfd_boolean
cec5225b 8046elfNN_aarch64_find_inliner_info (bfd *abfd,
a06ea964
NC		 8047 const char **filename_ptr,
8048 const char **functionname_ptr,
8049 unsigned int *line_ptr)
8050{
8051 bfd_boolean found;
8052 found = _bfd_dwarf2_find_inliner_info
8053 (abfd, filename_ptr,
8054 functionname_ptr, line_ptr, &elf_tdata (abfd)->dwarf2_find_line_info);
8055 return found;
8056}
8057
8058
ed7e9d0b
AM		 8059static bfd_boolean
8060elfNN_aarch64_init_file_header (bfd *abfd, struct bfd_link_info *link_info)
a06ea964
NC		 8061{
8062 Elf_Internal_Ehdr *i_ehdrp; /* ELF file header, internal form. */
8063
ed7e9d0b
AM		 8064 if (!_bfd_elf_init_file_header (abfd, link_info))
8065 return FALSE;
8066
a06ea964 8067 i_ehdrp = elf_elfheader (abfd);
a06ea964 8068 i_ehdrp->e_ident[EI_ABIVERSION] = AARCH64_ELF_ABI_VERSION;
ed7e9d0b 8069 return TRUE;
a06ea964
NC		 8070}
8071
8072static enum elf_reloc_type_class
cec5225b 8073elfNN_aarch64_reloc_type_class (const struct bfd_link_info *info ATTRIBUTE_UNUSED,
7e612e98
AM		 8074 const asection *rel_sec ATTRIBUTE_UNUSED,
8075 const Elf_Internal_Rela *rela)
a06ea964 8076{
f2e6a843
SN		 8077 struct elf_aarch64_link_hash_table *htab = elf_aarch64_hash_table (info);
8078
8079 if (htab->root.dynsym != NULL
8080 && htab->root.dynsym->contents != NULL)
8081 {
8082 /* Check relocation against STT_GNU_IFUNC symbol if there are
8083 dynamic symbols. */
8084 bfd *abfd = info->output_bfd;
8085 const struct elf_backend_data *bed = get_elf_backend_data (abfd);
8086 unsigned long r_symndx = ELFNN_R_SYM (rela->r_info);
8087 if (r_symndx != STN_UNDEF)
8088 {
8089 Elf_Internal_Sym sym;
8090 if (!bed->s->swap_symbol_in (abfd,
8091 (htab->root.dynsym->contents
8092 + r_symndx * bed->s->sizeof_sym),
8093 0, &sym))
8094 {
8095 /* xgettext:c-format */
871b3ab2 8096 _bfd_error_handler (_("%pB symbol number %lu references"
f2e6a843
SN		 8097 " nonexistent SHT_SYMTAB_SHNDX section"),
8098 abfd, r_symndx);
8099 /* Ideally an error class should be returned here. */
8100 }
8101 else if (ELF_ST_TYPE (sym.st_info) == STT_GNU_IFUNC)
8102 return reloc_class_ifunc;
8103 }
8104 }
8105
cec5225b 8106 switch ((int) ELFNN_R_TYPE (rela->r_info))
a06ea964 8107 {
f2e6a843
SN		 8108 case AARCH64_R (IRELATIVE):
8109 return reloc_class_ifunc;
a6bb11b2 8110 case AARCH64_R (RELATIVE):
a06ea964 8111 return reloc_class_relative;
a6bb11b2 8112 case AARCH64_R (JUMP_SLOT):
a06ea964 8113 return reloc_class_plt;
a6bb11b2 8114 case AARCH64_R (COPY):
a06ea964
NC		 8115 return reloc_class_copy;
8116 default:
8117 return reloc_class_normal;
8118 }
8119}
8120
a06ea964
NC		 8121/* Handle an AArch64 specific section when reading an object file. This is
8122 called when bfd_section_from_shdr finds a section with an unknown
8123 type. */
8124
8125static bfd_boolean
cec5225b 8126elfNN_aarch64_section_from_shdr (bfd *abfd,
a06ea964
NC		 8127 Elf_Internal_Shdr *hdr,
8128 const char *name, int shindex)
8129{
8130 /* There ought to be a place to keep ELF backend specific flags, but
8131 at the moment there isn't one. We just keep track of the
8132 sections by their name, instead. Fortunately, the ABI gives
8133 names for all the AArch64 specific sections, so we will probably get
8134 away with this. */
8135 switch (hdr->sh_type)
8136 {
8137 case SHT_AARCH64_ATTRIBUTES:
8138 break;
8139
8140 default:
8141 return FALSE;
8142 }
8143
8144 if (!_bfd_elf_make_section_from_shdr (abfd, hdr, name, shindex))
8145 return FALSE;
8146
8147 return TRUE;
8148}
8149
8150/* A structure used to record a list of sections, independently
8151 of the next and prev fields in the asection structure. */
8152typedef struct section_list
8153{
8154 asection *sec;
8155 struct section_list *next;
8156 struct section_list *prev;
8157}
8158section_list;
8159
8160/* Unfortunately we need to keep a list of sections for which
8161 an _aarch64_elf_section_data structure has been allocated. This
cec5225b 8162 is because it is possible for functions like elfNN_aarch64_write_section
a06ea964
NC		 8163 to be called on a section which has had an elf_data_structure
8164 allocated for it (and so the used_by_bfd field is valid) but
8165 for which the AArch64 extended version of this structure - the
8166 _aarch64_elf_section_data structure - has not been allocated. */
8167static section_list *sections_with_aarch64_elf_section_data = NULL;
8168
8169static void
8170record_section_with_aarch64_elf_section_data (asection *sec)
8171{
8172 struct section_list *entry;
8173
8174 entry = bfd_malloc (sizeof (*entry));
8175 if (entry == NULL)
8176 return;
8177 entry->sec = sec;
8178 entry->next = sections_with_aarch64_elf_section_data;
8179 entry->prev = NULL;
8180 if (entry->next != NULL)
8181 entry->next->prev = entry;
8182 sections_with_aarch64_elf_section_data = entry;
8183}
8184
8185static struct section_list *
8186find_aarch64_elf_section_entry (asection *sec)
8187{
8188 struct section_list *entry;
8189 static struct section_list *last_entry = NULL;
8190
8191 /* This is a short cut for the typical case where the sections are added
8192 to the sections_with_aarch64_elf_section_data list in forward order and
8193 then looked up here in backwards order. This makes a real difference
8194 to the ld-srec/sec64k.exp linker test. */
8195 entry = sections_with_aarch64_elf_section_data;
8196 if (last_entry != NULL)
8197 {
8198 if (last_entry->sec == sec)
8199 entry = last_entry;
8200 else if (last_entry->next != NULL && last_entry->next->sec == sec)
8201 entry = last_entry->next;
8202 }
8203
8204 for (; entry; entry = entry->next)
8205 if (entry->sec == sec)
8206 break;
8207
8208 if (entry)
8209 /* Record the entry prior to this one - it is the entry we are
8210 most likely to want to locate next time. Also this way if we
8211 have been called from
8212 unrecord_section_with_aarch64_elf_section_data () we will not
8213 be caching a pointer that is about to be freed. */
8214 last_entry = entry->prev;
8215
8216 return entry;
8217}
8218
8219static void
8220unrecord_section_with_aarch64_elf_section_data (asection *sec)
8221{
8222 struct section_list *entry;
8223
8224 entry = find_aarch64_elf_section_entry (sec);
8225
8226 if (entry)
8227 {
8228 if (entry->prev != NULL)
8229 entry->prev->next = entry->next;
8230 if (entry->next != NULL)
8231 entry->next->prev = entry->prev;
8232 if (entry == sections_with_aarch64_elf_section_data)
8233 sections_with_aarch64_elf_section_data = entry->next;
8234 free (entry);
8235 }
8236}
8237
8238
8239typedef struct
8240{
8241 void *finfo;
8242 struct bfd_link_info *info;
8243 asection *sec;
8244 int sec_shndx;
8245 int (*func) (void *, const char *, Elf_Internal_Sym *,
8246 asection *, struct elf_link_hash_entry *);
8247} output_arch_syminfo;
8248
8249enum map_symbol_type
8250{
8251 AARCH64_MAP_INSN,
8252 AARCH64_MAP_DATA
8253};
8254
8255
8256/* Output a single mapping symbol. */
8257
8258static bfd_boolean
cec5225b 8259elfNN_aarch64_output_map_sym (output_arch_syminfo *osi,
a06ea964
NC		 8260 enum map_symbol_type type, bfd_vma offset)
8261{
8262 static const char *names[2] = { "$x", "$d" };
8263 Elf_Internal_Sym sym;
8264
8265 sym.st_value = (osi->sec->output_section->vma
8266 + osi->sec->output_offset + offset);
8267 sym.st_size = 0;
8268 sym.st_other = 0;
8269 sym.st_info = ELF_ST_INFO (STB_LOCAL, STT_NOTYPE);
8270 sym.st_shndx = osi->sec_shndx;
8271 return osi->func (osi->finfo, names[type], &sym, osi->sec, NULL) == 1;
8272}
8273
a06ea964
NC		 8274/* Output a single local symbol for a generated stub. */
8275
8276static bfd_boolean
cec5225b 8277elfNN_aarch64_output_stub_sym (output_arch_syminfo *osi, const char *name,
a06ea964
NC		 8278 bfd_vma offset, bfd_vma size)
8279{
8280 Elf_Internal_Sym sym;
8281
8282 sym.st_value = (osi->sec->output_section->vma
8283 + osi->sec->output_offset + offset);
8284 sym.st_size = size;
8285 sym.st_other = 0;
8286 sym.st_info = ELF_ST_INFO (STB_LOCAL, STT_FUNC);
8287 sym.st_shndx = osi->sec_shndx;
8288 return osi->func (osi->finfo, name, &sym, osi->sec, NULL) == 1;
8289}
8290
8291static bfd_boolean
8292aarch64_map_one_stub (struct bfd_hash_entry *gen_entry, void *in_arg)
8293{
cec5225b 8294 struct elf_aarch64_stub_hash_entry *stub_entry;
a06ea964
NC		 8295 asection *stub_sec;
8296 bfd_vma addr;
8297 char *stub_name;
8298 output_arch_syminfo *osi;
8299
8300 /* Massage our args to the form they really have. */
cec5225b 8301 stub_entry = (struct elf_aarch64_stub_hash_entry *) gen_entry;
a06ea964
NC		 8302 osi = (output_arch_syminfo *) in_arg;
8303
8304 stub_sec = stub_entry->stub_sec;
8305
8306 /* Ensure this stub is attached to the current section being
8307 processed. */
8308 if (stub_sec != osi->sec)
8309 return TRUE;
8310
8311 addr = (bfd_vma) stub_entry->stub_offset;
8312
8313 stub_name = stub_entry->output_name;
8314
8315 switch (stub_entry->stub_type)
8316 {
8317 case aarch64_stub_adrp_branch:
cec5225b 8318 if (!elfNN_aarch64_output_stub_sym (osi, stub_name, addr,
a06ea964
NC		 8319 sizeof (aarch64_adrp_branch_stub)))
8320 return FALSE;
cec5225b 8321 if (!elfNN_aarch64_output_map_sym (osi, AARCH64_MAP_INSN, addr))
a06ea964
NC		 8322 return FALSE;
8323 break;
8324 case aarch64_stub_long_branch:
cec5225b 8325 if (!elfNN_aarch64_output_stub_sym
a06ea964
NC		 8326 (osi, stub_name, addr, sizeof (aarch64_long_branch_stub)))
8327 return FALSE;
cec5225b 8328 if (!elfNN_aarch64_output_map_sym (osi, AARCH64_MAP_INSN, addr))
a06ea964 8329 return FALSE;
cec5225b 8330 if (!elfNN_aarch64_output_map_sym (osi, AARCH64_MAP_DATA, addr + 16))
a06ea964
NC		 8331 return FALSE;
8332 break;
68fcca92
JW		 8333 case aarch64_stub_erratum_835769_veneer:
8334 if (!elfNN_aarch64_output_stub_sym (osi, stub_name, addr,
8335 sizeof (aarch64_erratum_835769_stub)))
8336 return FALSE;
8337 if (!elfNN_aarch64_output_map_sym (osi, AARCH64_MAP_INSN, addr))
8338 return FALSE;
8339 break;
4106101c
MS		 8340 case aarch64_stub_erratum_843419_veneer:
8341 if (!elfNN_aarch64_output_stub_sym (osi, stub_name, addr,
8342 sizeof (aarch64_erratum_843419_stub)))
8343 return FALSE;
8344 if (!elfNN_aarch64_output_map_sym (osi, AARCH64_MAP_INSN, addr))
8345 return FALSE;
8346 break;
9fca35fc
TC		 8347 case aarch64_stub_none:
8348 break;
4106101c 8349
a06ea964 8350 default:
8e2fe09f 8351 abort ();
a06ea964
NC		 8352 }
8353
8354 return TRUE;
8355}
8356
8357/* Output mapping symbols for linker generated sections. */
8358
8359static bfd_boolean
cec5225b 8360elfNN_aarch64_output_arch_local_syms (bfd *output_bfd,
a06ea964
NC		 8361 struct bfd_link_info *info,
8362 void *finfo,
8363 int (*func) (void *, const char *,
8364 Elf_Internal_Sym *,
8365 asection *,
8366 struct elf_link_hash_entry
8367 *))
8368{
8369 output_arch_syminfo osi;
cec5225b 8370 struct elf_aarch64_link_hash_table *htab;
a06ea964 8371
cec5225b 8372 htab = elf_aarch64_hash_table (info);
a06ea964
NC		 8373
8374 osi.finfo = finfo;
8375 osi.info = info;
8376 osi.func = func;
8377
8378 /* Long calls stubs. */
8379 if (htab->stub_bfd && htab->stub_bfd->sections)
8380 {
8381 asection *stub_sec;
8382
8383 for (stub_sec = htab->stub_bfd->sections;
8384 stub_sec != NULL; stub_sec = stub_sec->next)
8385 {
8386 /* Ignore non-stub sections. */
8387 if (!strstr (stub_sec->name, STUB_SUFFIX))
8388 continue;
8389
8390 osi.sec = stub_sec;
8391
8392 osi.sec_shndx = _bfd_elf_section_from_bfd_section
8393 (output_bfd, osi.sec->output_section);
8394
61865519
MS		 8395 /* The first instruction in a stub is always a branch. */
8396 if (!elfNN_aarch64_output_map_sym (&osi, AARCH64_MAP_INSN, 0))
8397 return FALSE;
8398
a06ea964
NC		 8399 bfd_hash_traverse (&htab->stub_hash_table, aarch64_map_one_stub,
8400 &osi);
8401 }
8402 }
8403
8404 /* Finally, output mapping symbols for the PLT. */
8405 if (!htab->root.splt || htab->root.splt->size == 0)
8406 return TRUE;
8407
a06ea964
NC		 8408 osi.sec_shndx = _bfd_elf_section_from_bfd_section
8409 (output_bfd, htab->root.splt->output_section);
8410 osi.sec = htab->root.splt;
8411
73524045 8412 elfNN_aarch64_output_map_sym (&osi, AARCH64_MAP_INSN, 0);
a06ea964
NC		 8413
8414 return TRUE;
8415
8416}
8417
8418/* Allocate target specific section data. */
8419
8420static bfd_boolean
cec5225b 8421elfNN_aarch64_new_section_hook (bfd *abfd, asection *sec)
a06ea964
NC		 8422{
8423 if (!sec->used_by_bfd)
8424 {
8425 _aarch64_elf_section_data *sdata;
986f0783 8426 size_t amt = sizeof (*sdata);
a06ea964
NC		 8427
8428 sdata = bfd_zalloc (abfd, amt);
8429 if (sdata == NULL)
8430 return FALSE;
8431 sec->used_by_bfd = sdata;
8432 }
8433
8434 record_section_with_aarch64_elf_section_data (sec);
8435
8436 return _bfd_elf_new_section_hook (abfd, sec);
8437}
8438
8439
8440static void
8441unrecord_section_via_map_over_sections (bfd *abfd ATTRIBUTE_UNUSED,
8442 asection *sec,
8443 void *ignore ATTRIBUTE_UNUSED)
8444{
8445 unrecord_section_with_aarch64_elf_section_data (sec);
8446}
8447
8448static bfd_boolean
cec5225b 8449elfNN_aarch64_close_and_cleanup (bfd *abfd)
a06ea964
NC		 8450{
8451 if (abfd->sections)
8452 bfd_map_over_sections (abfd,
8453 unrecord_section_via_map_over_sections, NULL);
8454
8455 return _bfd_elf_close_and_cleanup (abfd);
8456}
8457
8458static bfd_boolean
cec5225b 8459elfNN_aarch64_bfd_free_cached_info (bfd *abfd)
a06ea964
NC		 8460{
8461 if (abfd->sections)
8462 bfd_map_over_sections (abfd,
8463 unrecord_section_via_map_over_sections, NULL);
8464
8465 return _bfd_free_cached_info (abfd);
8466}
8467
a06ea964
NC		 8468/* Create dynamic sections. This is different from the ARM backend in that
8469 the got, plt, gotplt and their relocation sections are all created in the
8470 standard part of the bfd elf backend. */
8471
8472static bfd_boolean
cec5225b 8473elfNN_aarch64_create_dynamic_sections (bfd *dynobj,
a06ea964
NC		 8474 struct bfd_link_info *info)
8475{
cc0efaa8
MS		 8476 /* We need to create .got section. */
8477 if (!aarch64_elf_create_got_section (dynobj, info))
8478 return FALSE;
a06ea964 8479
9d19e4fd 8480 return _bfd_elf_create_dynamic_sections (dynobj, info);
a06ea964
NC		 8481}
8482
8483
8484/* Allocate space in .plt, .got and associated reloc sections for
8485 dynamic relocs. */
8486
8487static bfd_boolean
cec5225b 8488elfNN_aarch64_allocate_dynrelocs (struct elf_link_hash_entry *h, void *inf)
a06ea964
NC		 8489{
8490 struct bfd_link_info *info;
cec5225b
YZ		 8491 struct elf_aarch64_link_hash_table *htab;
8492 struct elf_aarch64_link_hash_entry *eh;
a06ea964
NC		 8493 struct elf_dyn_relocs *p;
8494
8495 /* An example of a bfd_link_hash_indirect symbol is versioned
8496 symbol. For example: __gxx_personality_v0(bfd_link_hash_indirect)
8497 -> __gxx_personality_v0(bfd_link_hash_defined)
8498
8499 There is no need to process bfd_link_hash_indirect symbols here
8500 because we will also be presented with the concrete instance of
cec5225b 8501 the symbol and elfNN_aarch64_copy_indirect_symbol () will have been
a06ea964 8502 called to copy all relevant data from the generic to the concrete
2d0ca824 8503 symbol instance. */
a06ea964
NC		 8504 if (h->root.type == bfd_link_hash_indirect)
8505 return TRUE;
8506
8507 if (h->root.type == bfd_link_hash_warning)
8508 h = (struct elf_link_hash_entry *) h->root.u.i.link;
8509
8510 info = (struct bfd_link_info *) inf;
cec5225b 8511 htab = elf_aarch64_hash_table (info);
a06ea964 8512
1419bbe5
WN		 8513 /* Since STT_GNU_IFUNC symbol must go through PLT, we handle it
8514 here if it is defined and referenced in a non-shared object. */
8515 if (h->type == STT_GNU_IFUNC
8516 && h->def_regular)
8517 return TRUE;
8518 else if (htab->root.dynamic_sections_created && h->plt.refcount > 0)
a06ea964
NC		 8519 {
8520 /* Make sure this symbol is output as a dynamic symbol.
07d6d2b8 8521 Undefined weak syms won't yet be marked as dynamic. */
ff07562f
JW		 8522 if (h->dynindx == -1 && !h->forced_local
8523 && h->root.type == bfd_link_hash_undefweak)
a06ea964
NC		 8524 {
8525 if (!bfd_elf_link_record_dynamic_symbol (info, h))
8526 return FALSE;
8527 }
8528
0e1862bb 8529 if (bfd_link_pic (info) || WILL_CALL_FINISH_DYNAMIC_SYMBOL (1, 0, h))
a06ea964
NC		 8530 {
8531 asection *s = htab->root.splt;
8532
8533 /* If this is the first .plt entry, make room for the special
8534 first entry. */
8535 if (s->size == 0)
8536 s->size += htab->plt_header_size;
8537
8538 h->plt.offset = s->size;
8539
8540 /* If this symbol is not defined in a regular file, and we are
8541 not generating a shared library, then set the symbol to this
8542 location in the .plt. This is required to make function
8543 pointers compare as equal between the normal executable and
8544 the shared library. */
0e1862bb 8545 if (!bfd_link_pic (info) && !h->def_regular)
a06ea964
NC		 8546 {
8547 h->root.u.def.section = s;
8548 h->root.u.def.value = h->plt.offset;
8549 }
8550
8551 /* Make room for this entry. For now we only create the
8552 small model PLT entries. We later need to find a way
8553 of relaxing into these from the large model PLT entries. */
37c18eed 8554 s->size += htab->plt_entry_size;
a06ea964
NC		 8555
8556 /* We also need to make an entry in the .got.plt section, which
8557 will be placed in the .got section by the linker script. */
8558 htab->root.sgotplt->size += GOT_ENTRY_SIZE;
8559
8560 /* We also need to make an entry in the .rela.plt section. */
8561 htab->root.srelplt->size += RELOC_SIZE (htab);
8562
8563 /* We need to ensure that all GOT entries that serve the PLT
8564 are consecutive with the special GOT slots [0] [1] and
8565 [2]. Any addtional relocations, such as
8566 R_AARCH64_TLSDESC, must be placed after the PLT related
8567 entries. We abuse the reloc_count such that during
8568 sizing we adjust reloc_count to indicate the number of
8569 PLT related reserved entries. In subsequent phases when
8570 filling in the contents of the reloc entries, PLT related
8571 entries are placed by computing their PLT index (0
8572 .. reloc_count). While other none PLT relocs are placed
8573 at the slot indicated by reloc_count and reloc_count is
8574 updated. */
8575
8576 htab->root.srelplt->reloc_count++;
823710d5
SN		 8577
8578 /* Mark the DSO in case R_<CLS>_JUMP_SLOT relocs against
8579 variant PCS symbols are present. */
8580 if (h->other & STO_AARCH64_VARIANT_PCS)
8581 htab->variant_pcs = 1;
8582
a06ea964
NC		 8583 }
8584 else
8585 {
8586 h->plt.offset = (bfd_vma) - 1;
8587 h->needs_plt = 0;
8588 }
8589 }
8590 else
8591 {
8592 h->plt.offset = (bfd_vma) - 1;
8593 h->needs_plt = 0;
8594 }
8595
cec5225b 8596 eh = (struct elf_aarch64_link_hash_entry *) h;
a06ea964
NC		 8597 eh->tlsdesc_got_jump_table_offset = (bfd_vma) - 1;
8598
8599 if (h->got.refcount > 0)
8600 {
8601 bfd_boolean dyn;
cec5225b 8602 unsigned got_type = elf_aarch64_hash_entry (h)->got_type;
a06ea964
NC		 8603
8604 h->got.offset = (bfd_vma) - 1;
8605
8606 dyn = htab->root.dynamic_sections_created;
8607
8608 /* Make sure this symbol is output as a dynamic symbol.
07d6d2b8 8609 Undefined weak syms won't yet be marked as dynamic. */
ff07562f
JW		 8610 if (dyn && h->dynindx == -1 && !h->forced_local
8611 && h->root.type == bfd_link_hash_undefweak)
a06ea964
NC		 8612 {
8613 if (!bfd_elf_link_record_dynamic_symbol (info, h))
8614 return FALSE;
8615 }
8616
8617 if (got_type == GOT_UNKNOWN)
8618 {
8619 }
8620 else if (got_type == GOT_NORMAL)
8621 {
8622 h->got.offset = htab->root.sgot->size;
8623 htab->root.sgot->size += GOT_ENTRY_SIZE;
8624 if ((ELF_ST_VISIBILITY (h->other) == STV_DEFAULT
8625 || h->root.type != bfd_link_hash_undefweak)
0e1862bb 8626 && (bfd_link_pic (info)
a377ae2a
SN		 8627 || WILL_CALL_FINISH_DYNAMIC_SYMBOL (dyn, 0, h))
8628 /* Undefined weak symbol in static PIE resolves to 0 without
8629 any dynamic relocations. */
8630 && !UNDEFWEAK_NO_DYNAMIC_RELOC (info, h))
a06ea964
NC		 8631 {
8632 htab->root.srelgot->size += RELOC_SIZE (htab);
8633 }
8634 }
8635 else
8636 {
8637 int indx;
8638 if (got_type & GOT_TLSDESC_GD)
8639 {
8640 eh->tlsdesc_got_jump_table_offset =
8641 (htab->root.sgotplt->size
8642 - aarch64_compute_jump_table_size (htab));
8643 htab->root.sgotplt->size += GOT_ENTRY_SIZE * 2;
8644 h->got.offset = (bfd_vma) - 2;
8645 }
8646
8647 if (got_type & GOT_TLS_GD)
8648 {
8649 h->got.offset = htab->root.sgot->size;
8650 htab->root.sgot->size += GOT_ENTRY_SIZE * 2;
8651 }
8652
8653 if (got_type & GOT_TLS_IE)
8654 {
8655 h->got.offset = htab->root.sgot->size;
8656 htab->root.sgot->size += GOT_ENTRY_SIZE;
8657 }
8658
8659 indx = h && h->dynindx != -1 ? h->dynindx : 0;
8660 if ((ELF_ST_VISIBILITY (h->other) == STV_DEFAULT
8661 || h->root.type != bfd_link_hash_undefweak)
6dda7875 8662 && (!bfd_link_executable (info)
a06ea964
NC		 8663 || indx != 0
8664 || WILL_CALL_FINISH_DYNAMIC_SYMBOL (dyn, 0, h)))
8665 {
8666 if (got_type & GOT_TLSDESC_GD)
8667 {
8668 htab->root.srelplt->size += RELOC_SIZE (htab);
8669 /* Note reloc_count not incremented here! We have
8670 already adjusted reloc_count for this relocation
8671 type. */
8672
8673 /* TLSDESC PLT is now needed, but not yet determined. */
9bcc30e4 8674 htab->root.tlsdesc_plt = (bfd_vma) - 1;
a06ea964
NC		 8675 }
8676
8677 if (got_type & GOT_TLS_GD)
8678 htab->root.srelgot->size += RELOC_SIZE (htab) * 2;
8679
8680 if (got_type & GOT_TLS_IE)
8681 htab->root.srelgot->size += RELOC_SIZE (htab);
8682 }
8683 }
8684 }
8685 else
8686 {
8687 h->got.offset = (bfd_vma) - 1;
8688 }
8689
190eb1dd 8690 if (h->dyn_relocs == NULL)
a06ea964
NC		 8691 return TRUE;
8692
8693 /* In the shared -Bsymbolic case, discard space allocated for
8694 dynamic pc-relative relocs against symbols which turn out to be
8695 defined in regular objects. For the normal shared case, discard
8696 space for pc-relative relocs that have become local due to symbol
8697 visibility changes. */
8698
0e1862bb 8699 if (bfd_link_pic (info))
a06ea964
NC		 8700 {
8701 /* Relocs that use pc_count are those that appear on a call
07d6d2b8
AM		 8702 insn, or certain REL relocs that can generated via assembly.
8703 We want calls to protected symbols to resolve directly to the
8704 function rather than going via the plt. If people want
8705 function pointer comparisons to work as expected then they
8706 should avoid writing weird assembly. */
a06ea964
NC		 8707 if (SYMBOL_CALLS_LOCAL (info, h))
8708 {
8709 struct elf_dyn_relocs **pp;
8710
190eb1dd 8711 for (pp = &h->dyn_relocs; (p = *pp) != NULL;)
a06ea964
NC		 8712 {
8713 p->count -= p->pc_count;
8714 p->pc_count = 0;
8715 if (p->count == 0)
8716 *pp = p->next;
8717 else
8718 pp = &p->next;
8719 }
8720 }
8721
8722 /* Also discard relocs on undefined weak syms with non-default
07d6d2b8 8723 visibility. */
190eb1dd 8724 if (h->dyn_relocs != NULL && h->root.type == bfd_link_hash_undefweak)
a06ea964 8725 {
ddb7fd0f
L		 8726 if (ELF_ST_VISIBILITY (h->other) != STV_DEFAULT
8727 || UNDEFWEAK_NO_DYNAMIC_RELOC (info, h))
190eb1dd 8728 h->dyn_relocs = NULL;
a06ea964
NC		 8729
8730 /* Make sure undefined weak symbols are output as a dynamic
8731 symbol in PIEs. */
8732 else if (h->dynindx == -1
8733 && !h->forced_local
ff07562f 8734 && h->root.type == bfd_link_hash_undefweak
a06ea964
NC		 8735 && !bfd_elf_link_record_dynamic_symbol (info, h))
8736 return FALSE;
8737 }
8738
8739 }
8740 else if (ELIMINATE_COPY_RELOCS)
8741 {
8742 /* For the non-shared case, discard space for relocs against
07d6d2b8
AM		 8743 symbols which turn out to need copy relocs or are not
8744 dynamic. */
a06ea964
NC		 8745
8746 if (!h->non_got_ref
8747 && ((h->def_dynamic
8748 && !h->def_regular)
8749 || (htab->root.dynamic_sections_created
8750 && (h->root.type == bfd_link_hash_undefweak
8751 || h->root.type == bfd_link_hash_undefined))))
8752 {
8753 /* Make sure this symbol is output as a dynamic symbol.
8754 Undefined weak syms won't yet be marked as dynamic. */
8755 if (h->dynindx == -1
8756 && !h->forced_local
ff07562f 8757 && h->root.type == bfd_link_hash_undefweak
a06ea964
NC		 8758 && !bfd_elf_link_record_dynamic_symbol (info, h))
8759 return FALSE;
8760
8761 /* If that succeeded, we know we'll be keeping all the
8762 relocs. */
8763 if (h->dynindx != -1)
8764 goto keep;
8765 }
8766
190eb1dd 8767 h->dyn_relocs = NULL;
a06ea964
NC		 8768
8769 keep:;
8770 }
8771
8772 /* Finally, allocate space. */
190eb1dd 8773 for (p = h->dyn_relocs; p != NULL; p = p->next)
a06ea964
NC		 8774 {
8775 asection *sreloc;
8776
8777 sreloc = elf_section_data (p->sec)->sreloc;
8778
8779 BFD_ASSERT (sreloc != NULL);
8780
8781 sreloc->size += p->count * RELOC_SIZE (htab);
8782 }
8783
8784 return TRUE;
8785}
8786
1419bbe5
WN		 8787/* Allocate space in .plt, .got and associated reloc sections for
8788 ifunc dynamic relocs. */
8789
8790static bfd_boolean
8791elfNN_aarch64_allocate_ifunc_dynrelocs (struct elf_link_hash_entry *h,
8792 void *inf)
8793{
8794 struct bfd_link_info *info;
8795 struct elf_aarch64_link_hash_table *htab;
1419bbe5
WN		 8796
8797 /* An example of a bfd_link_hash_indirect symbol is versioned
8798 symbol. For example: __gxx_personality_v0(bfd_link_hash_indirect)
8799 -> __gxx_personality_v0(bfd_link_hash_defined)
8800
8801 There is no need to process bfd_link_hash_indirect symbols here
8802 because we will also be presented with the concrete instance of
8803 the symbol and elfNN_aarch64_copy_indirect_symbol () will have been
8804 called to copy all relevant data from the generic to the concrete
2d0ca824 8805 symbol instance. */
1419bbe5
WN		 8806 if (h->root.type == bfd_link_hash_indirect)
8807 return TRUE;
8808
8809 if (h->root.type == bfd_link_hash_warning)
8810 h = (struct elf_link_hash_entry *) h->root.u.i.link;
8811
8812 info = (struct bfd_link_info *) inf;
8813 htab = elf_aarch64_hash_table (info);
8814
1419bbe5
WN		 8815 /* Since STT_GNU_IFUNC symbol must go through PLT, we handle it
8816 here if it is defined and referenced in a non-shared object. */
8817 if (h->type == STT_GNU_IFUNC
8818 && h->def_regular)
8819 return _bfd_elf_allocate_ifunc_dyn_relocs (info, h,
190eb1dd 8820 &h->dyn_relocs,
1419bbe5
WN		 8821 htab->plt_entry_size,
8822 htab->plt_header_size,
233cc9c1
L		 8823 GOT_ENTRY_SIZE,
8824 FALSE);
1419bbe5
WN		 8825 return TRUE;
8826}
8827
1419bbe5
WN		 8828/* Allocate space in .plt, .got and associated reloc sections for
8829 local ifunc dynamic relocs. */
8830
8831static bfd_boolean
8832elfNN_aarch64_allocate_local_ifunc_dynrelocs (void **slot, void *inf)
8833{
8834 struct elf_link_hash_entry *h
8835 = (struct elf_link_hash_entry *) *slot;
8836
8837 if (h->type != STT_GNU_IFUNC
8838 || !h->def_regular
8839 || !h->ref_regular
8840 || !h->forced_local
8841 || h->root.type != bfd_link_hash_defined)
8842 abort ();
8843
8844 return elfNN_aarch64_allocate_ifunc_dynrelocs (h, inf);
8845}
a06ea964 8846
a06ea964
NC		 8847/* This is the most important function of all . Innocuosly named
8848 though ! */
2d0ca824 8849
a06ea964 8850static bfd_boolean
cec5225b 8851elfNN_aarch64_size_dynamic_sections (bfd *output_bfd ATTRIBUTE_UNUSED,
a06ea964
NC		 8852 struct bfd_link_info *info)
8853{
cec5225b 8854 struct elf_aarch64_link_hash_table *htab;
a06ea964
NC		 8855 bfd *dynobj;
8856 asection *s;
8857 bfd_boolean relocs;
8858 bfd *ibfd;
8859
cec5225b 8860 htab = elf_aarch64_hash_table ((info));
a06ea964
NC		 8861 dynobj = htab->root.dynobj;
8862
8863 BFD_ASSERT (dynobj != NULL);
8864
8865 if (htab->root.dynamic_sections_created)
8866 {
9b8b325a 8867 if (bfd_link_executable (info) && !info->nointerp)
a06ea964
NC		 8868 {
8869 s = bfd_get_linker_section (dynobj, ".interp");
8870 if (s == NULL)
8871 abort ();
8872 s->size = sizeof ELF_DYNAMIC_INTERPRETER;
8873 s->contents = (unsigned char *) ELF_DYNAMIC_INTERPRETER;
8874 }
8875 }
8876
8877 /* Set up .got offsets for local syms, and space for local dynamic
8878 relocs. */
c72f2fb2 8879 for (ibfd = info->input_bfds; ibfd != NULL; ibfd = ibfd->link.next)
a06ea964
NC		 8880 {
8881 struct elf_aarch64_local_symbol *locals = NULL;
8882 Elf_Internal_Shdr *symtab_hdr;
8883 asection *srel;
8884 unsigned int i;
8885
8886 if (!is_aarch64_elf (ibfd))
8887 continue;
8888
8889 for (s = ibfd->sections; s != NULL; s = s->next)
8890 {
8891 struct elf_dyn_relocs *p;
8892
8893 for (p = (struct elf_dyn_relocs *)
8894 (elf_section_data (s)->local_dynrel); p != NULL; p = p->next)
8895 {
8896 if (!bfd_is_abs_section (p->sec)
8897 && bfd_is_abs_section (p->sec->output_section))
8898 {
8899 /* Input section has been discarded, either because
8900 it is a copy of a linkonce section or due to
8901 linker script /DISCARD/, so we'll be discarding
8902 the relocs too. */
8903 }
8904 else if (p->count != 0)
8905 {
8906 srel = elf_section_data (p->sec)->sreloc;
8907 srel->size += p->count * RELOC_SIZE (htab);
8908 if ((p->sec->output_section->flags & SEC_READONLY) != 0)
8909 info->flags |= DF_TEXTREL;
8910 }
8911 }
8912 }
8913
cec5225b 8914 locals = elf_aarch64_locals (ibfd);
a06ea964
NC		 8915 if (!locals)
8916 continue;
8917
8918 symtab_hdr = &elf_symtab_hdr (ibfd);
8919 srel = htab->root.srelgot;
8920 for (i = 0; i < symtab_hdr->sh_info; i++)
8921 {
8922 locals[i].got_offset = (bfd_vma) - 1;
8923 locals[i].tlsdesc_got_jump_table_offset = (bfd_vma) - 1;
8924 if (locals[i].got_refcount > 0)
8925 {
8926 unsigned got_type = locals[i].got_type;
8927 if (got_type & GOT_TLSDESC_GD)
8928 {
8929 locals[i].tlsdesc_got_jump_table_offset =
8930 (htab->root.sgotplt->size
8931 - aarch64_compute_jump_table_size (htab));
8932 htab->root.sgotplt->size += GOT_ENTRY_SIZE * 2;
8933 locals[i].got_offset = (bfd_vma) - 2;
8934 }
8935
8936 if (got_type & GOT_TLS_GD)
8937 {
8938 locals[i].got_offset = htab->root.sgot->size;
8939 htab->root.sgot->size += GOT_ENTRY_SIZE * 2;
8940 }
8941
b53b1bed
JW		 8942 if (got_type & GOT_TLS_IE
8943 || got_type & GOT_NORMAL)
a06ea964
NC		 8944 {
8945 locals[i].got_offset = htab->root.sgot->size;
8946 htab->root.sgot->size += GOT_ENTRY_SIZE;
8947 }
8948
8949 if (got_type == GOT_UNKNOWN)
8950 {
8951 }
8952
0e1862bb 8953 if (bfd_link_pic (info))
a06ea964
NC		 8954 {
8955 if (got_type & GOT_TLSDESC_GD)
8956 {
8957 htab->root.srelplt->size += RELOC_SIZE (htab);
8958 /* Note RELOC_COUNT not incremented here! */
9bcc30e4 8959 htab->root.tlsdesc_plt = (bfd_vma) - 1;
a06ea964
NC		 8960 }
8961
8962 if (got_type & GOT_TLS_GD)
8963 htab->root.srelgot->size += RELOC_SIZE (htab) * 2;
8964
b53b1bed
JW		 8965 if (got_type & GOT_TLS_IE
8966 || got_type & GOT_NORMAL)
a06ea964
NC		 8967 htab->root.srelgot->size += RELOC_SIZE (htab);
8968 }
8969 }
8970 else
8971 {
8972 locals[i].got_refcount = (bfd_vma) - 1;
8973 }
8974 }
8975 }
8976
8977
8978 /* Allocate global sym .plt and .got entries, and space for global
8979 sym dynamic relocs. */
cec5225b 8980 elf_link_hash_traverse (&htab->root, elfNN_aarch64_allocate_dynrelocs,
a06ea964
NC		 8981 info);
8982
1419bbe5
WN		 8983 /* Allocate global ifunc sym .plt and .got entries, and space for global
8984 ifunc sym dynamic relocs. */
8985 elf_link_hash_traverse (&htab->root, elfNN_aarch64_allocate_ifunc_dynrelocs,
8986 info);
8987
1419bbe5
WN		 8988 /* Allocate .plt and .got entries, and space for local ifunc symbols. */
8989 htab_traverse (htab->loc_hash_table,
8990 elfNN_aarch64_allocate_local_ifunc_dynrelocs,
8991 info);
a06ea964
NC		 8992
8993 /* For every jump slot reserved in the sgotplt, reloc_count is
8994 incremented. However, when we reserve space for TLS descriptors,
8995 it's not incremented, so in order to compute the space reserved
8996 for them, it suffices to multiply the reloc count by the jump
8997 slot size. */
8998
8999 if (htab->root.srelplt)
8847944f 9000 htab->sgotplt_jump_table_size = aarch64_compute_jump_table_size (htab);
a06ea964 9001
9bcc30e4 9002 if (htab->root.tlsdesc_plt)
a06ea964
NC		 9003 {
9004 if (htab->root.splt->size == 0)
37c18eed 9005 htab->root.splt->size += htab->plt_header_size;
a06ea964 9006
a06ea964 9007 /* If we're not using lazy TLS relocations, don't generate the
ce12121b 9008 GOT and PLT entry required. */
9bcc30e4
L		 9009 if ((info->flags & DF_BIND_NOW))
9010 htab->root.tlsdesc_plt = 0;
9011 else
a06ea964 9012 {
9bcc30e4 9013 htab->root.tlsdesc_plt = htab->root.splt->size;
ce12121b
TC		 9014 htab->root.splt->size += htab->tlsdesc_plt_entry_size;
9015
9bcc30e4 9016 htab->root.tlsdesc_got = htab->root.sgot->size;
a06ea964
NC		 9017 htab->root.sgot->size += GOT_ENTRY_SIZE;
9018 }
9019 }
9020
68fcca92 9021 /* Init mapping symbols information to use later to distingush between
4106101c
MS		 9022 code and data while scanning for errata. */
9023 if (htab->fix_erratum_835769 || htab->fix_erratum_843419)
68fcca92
JW		 9024 for (ibfd = info->input_bfds; ibfd != NULL; ibfd = ibfd->link.next)
9025 {
9026 if (!is_aarch64_elf (ibfd))
9027 continue;
9028 bfd_elfNN_aarch64_init_maps (ibfd);
9029 }
9030
a06ea964
NC		 9031 /* We now have determined the sizes of the various dynamic sections.
9032 Allocate memory for them. */
9033 relocs = FALSE;
9034 for (s = dynobj->sections; s != NULL; s = s->next)
9035 {
9036 if ((s->flags & SEC_LINKER_CREATED) == 0)
9037 continue;
9038
9039 if (s == htab->root.splt
9040 || s == htab->root.sgot
9041 || s == htab->root.sgotplt
9042 || s == htab->root.iplt
9d19e4fd 9043 || s == htab->root.igotplt
5474d94f
AM		 9044 || s == htab->root.sdynbss
9045 || s == htab->root.sdynrelro)
a06ea964
NC		 9046 {
9047 /* Strip this section if we don't need it; see the
9048 comment below. */
9049 }
fd361982 9050 else if (CONST_STRNEQ (bfd_section_name (s), ".rela"))
a06ea964
NC		 9051 {
9052 if (s->size != 0 && s != htab->root.srelplt)
9053 relocs = TRUE;
9054
9055 /* We use the reloc_count field as a counter if we need
9056 to copy relocs into the output file. */
9057 if (s != htab->root.srelplt)
9058 s->reloc_count = 0;
9059 }
9060 else
9061 {
9062 /* It's not one of our sections, so don't allocate space. */
9063 continue;
9064 }
9065
9066 if (s->size == 0)
9067 {
9068 /* If we don't need this section, strip it from the
9069 output file. This is mostly to handle .rela.bss and
9070 .rela.plt. We must create both sections in
9071 create_dynamic_sections, because they must be created
9072 before the linker maps input sections to output
9073 sections. The linker does that before
9074 adjust_dynamic_symbol is called, and it is that
9075 function which decides whether anything needs to go
9076 into these sections. */
a06ea964
NC		 9077 s->flags |= SEC_EXCLUDE;
9078 continue;
9079 }
9080
9081 if ((s->flags & SEC_HAS_CONTENTS) == 0)
9082 continue;
9083
9084 /* Allocate memory for the section contents. We use bfd_zalloc
07d6d2b8
AM		 9085 here in case unused entries are not reclaimed before the
9086 section's contents are written out. This should not happen,
9087 but this way if it does, we get a R_AARCH64_NONE reloc instead
9088 of garbage. */
a06ea964
NC		 9089 s->contents = (bfd_byte *) bfd_zalloc (dynobj, s->size);
9090 if (s->contents == NULL)
9091 return FALSE;
9092 }
9093
9094 if (htab->root.dynamic_sections_created)
9095 {
9096 /* Add some entries to the .dynamic section. We fill in the
07d6d2b8
AM		 9097 values later, in elfNN_aarch64_finish_dynamic_sections, but we
9098 must add the entries now so that we get the correct size for
9099 the .dynamic section. The DT_DEBUG entry is filled in by the
9100 dynamic linker and used by the debugger. */
a06ea964
NC		 9101#define add_dynamic_entry(TAG, VAL) \
9102 _bfd_elf_add_dynamic_entry (info, TAG, VAL)
9103
3084d7a2
L		 9104 if (!_bfd_elf_add_dynamic_tags (output_bfd, info, relocs))
9105 return FALSE;
a06ea964
NC		 9106
9107 if (htab->root.splt->size != 0)
9108 {
823710d5
SN		 9109 if (htab->variant_pcs
9110 && !add_dynamic_entry (DT_AARCH64_VARIANT_PCS, 0))
9111 return FALSE;
9112
1dbade74
SD		 9113 if ((elf_aarch64_tdata (output_bfd)->plt_type == PLT_BTI_PAC)
9114 && (!add_dynamic_entry (DT_AARCH64_BTI_PLT, 0)
9115 || !add_dynamic_entry (DT_AARCH64_PAC_PLT, 0)))
9116 return FALSE;
9117
9118 else if ((elf_aarch64_tdata (output_bfd)->plt_type == PLT_BTI)
9119 && !add_dynamic_entry (DT_AARCH64_BTI_PLT, 0))
9120 return FALSE;
9121
9122 else if ((elf_aarch64_tdata (output_bfd)->plt_type == PLT_PAC)
9123 && !add_dynamic_entry (DT_AARCH64_PAC_PLT, 0))
37c18eed 9124 return FALSE;
a06ea964 9125 }
a06ea964
NC		 9126 }
9127#undef add_dynamic_entry
9128
9129 return TRUE;
a06ea964
NC		 9130}
9131
9132static inline void
caed7120
YZ		 9133elf_aarch64_update_plt_entry (bfd *output_bfd,
9134 bfd_reloc_code_real_type r_type,
9135 bfd_byte *plt_entry, bfd_vma value)
a06ea964 9136{
caed7120
YZ		 9137 reloc_howto_type *howto = elfNN_aarch64_howto_from_bfd_reloc (r_type);
9138
1d75a8e2
NC		 9139 /* FIXME: We should check the return value from this function call. */
9140 (void) _bfd_aarch64_elf_put_addend (output_bfd, plt_entry, r_type, howto, value);
a06ea964
NC		 9141}
9142
9143static void
cec5225b
YZ		 9144elfNN_aarch64_create_small_pltn_entry (struct elf_link_hash_entry *h,
9145 struct elf_aarch64_link_hash_table
1419bbe5
WN		 9146 *htab, bfd *output_bfd,
9147 struct bfd_link_info *info)
a06ea964
NC		 9148{
9149 bfd_byte *plt_entry;
9150 bfd_vma plt_index;
9151 bfd_vma got_offset;
9152 bfd_vma gotplt_entry_address;
9153 bfd_vma plt_entry_address;
9154 Elf_Internal_Rela rela;
9155 bfd_byte *loc;
1419bbe5
WN		 9156 asection *plt, *gotplt, *relplt;
9157
9158 /* When building a static executable, use .iplt, .igot.plt and
9159 .rela.iplt sections for STT_GNU_IFUNC symbols. */
9160 if (htab->root.splt != NULL)
9161 {
9162 plt = htab->root.splt;
9163 gotplt = htab->root.sgotplt;
9164 relplt = htab->root.srelplt;
9165 }
9166 else
9167 {
9168 plt = htab->root.iplt;
9169 gotplt = htab->root.igotplt;
9170 relplt = htab->root.irelplt;
9171 }
9172
9173 /* Get the index in the procedure linkage table which
9174 corresponds to this symbol. This is the index of this symbol
9175 in all the symbols for which we are making plt entries. The
9176 first entry in the procedure linkage table is reserved.
a06ea964 9177
1419bbe5
WN		 9178 Get the offset into the .got table of the entry that
9179 corresponds to this function. Each .got entry is GOT_ENTRY_SIZE
9180 bytes. The first three are reserved for the dynamic linker.
692e2b8b 9181
1419bbe5
WN		 9182 For static executables, we don't reserve anything. */
9183
9184 if (plt == htab->root.splt)
9185 {
9186 plt_index = (h->plt.offset - htab->plt_header_size) / htab->plt_entry_size;
9187 got_offset = (plt_index + 3) * GOT_ENTRY_SIZE;
9188 }
9189 else
9190 {
9191 plt_index = h->plt.offset / htab->plt_entry_size;
9192 got_offset = plt_index * GOT_ENTRY_SIZE;
9193 }
9194
9195 plt_entry = plt->contents + h->plt.offset;
9196 plt_entry_address = plt->output_section->vma
f44a1f8e 9197 + plt->output_offset + h->plt.offset;
1419bbe5
WN		 9198 gotplt_entry_address = gotplt->output_section->vma +
9199 gotplt->output_offset + got_offset;
a06ea964
NC		 9200
9201 /* Copy in the boiler-plate for the PLTn entry. */
37c18eed
SD		 9202 memcpy (plt_entry, htab->plt_entry, htab->plt_entry_size);
9203
9204 /* First instruction in BTI enabled PLT stub is a BTI
9205 instruction so skip it. */
9206 if (elf_aarch64_tdata (output_bfd)->plt_type & PLT_BTI
9207 && elf_elfheader (output_bfd)->e_type == ET_EXEC)
9208 plt_entry = plt_entry + 4;
a06ea964
NC		 9209
9210 /* Fill in the top 21 bits for this: ADRP x16, PLT_GOT + n * 8.
9211 ADRP: ((PG(S+A)-PG(P)) >> 12) & 0x1fffff */
caed7120
YZ		 9212 elf_aarch64_update_plt_entry (output_bfd, BFD_RELOC_AARCH64_ADR_HI21_PCREL,
9213 plt_entry,
9214 PG (gotplt_entry_address) -
9215 PG (plt_entry_address));
a06ea964
NC		 9216
9217 /* Fill in the lo12 bits for the load from the pltgot. */
caed7120
YZ		 9218 elf_aarch64_update_plt_entry (output_bfd, BFD_RELOC_AARCH64_LDSTNN_LO12,
9219 plt_entry + 4,
9220 PG_OFFSET (gotplt_entry_address));
a06ea964 9221
9aff4b7a 9222 /* Fill in the lo12 bits for the add from the pltgot entry. */
caed7120
YZ		 9223 elf_aarch64_update_plt_entry (output_bfd, BFD_RELOC_AARCH64_ADD_LO12,
9224 plt_entry + 8,
9225 PG_OFFSET (gotplt_entry_address));
a06ea964
NC		 9226
9227 /* All the GOTPLT Entries are essentially initialized to PLT0. */
cec5225b 9228 bfd_put_NN (output_bfd,
1419bbe5
WN		 9229 plt->output_section->vma + plt->output_offset,
9230 gotplt->contents + got_offset);
a06ea964 9231
a06ea964 9232 rela.r_offset = gotplt_entry_address;
1419bbe5
WN		 9233
9234 if (h->dynindx == -1
0e1862bb 9235 || ((bfd_link_executable (info)
1419bbe5
WN		 9236 || ELF_ST_VISIBILITY (h->other) != STV_DEFAULT)
9237 && h->def_regular
9238 && h->type == STT_GNU_IFUNC))
9239 {
9240 /* If an STT_GNU_IFUNC symbol is locally defined, generate
9241 R_AARCH64_IRELATIVE instead of R_AARCH64_JUMP_SLOT. */
9242 rela.r_info = ELFNN_R_INFO (0, AARCH64_R (IRELATIVE));
9243 rela.r_addend = (h->root.u.def.value
9244 + h->root.u.def.section->output_section->vma
9245 + h->root.u.def.section->output_offset);
9246 }
9247 else
9248 {
9249 /* Fill in the entry in the .rela.plt section. */
9250 rela.r_info = ELFNN_R_INFO (h->dynindx, AARCH64_R (JUMP_SLOT));
9251 rela.r_addend = 0;
9252 }
a06ea964
NC		 9253
9254 /* Compute the relocation entry to used based on PLT index and do
9255 not adjust reloc_count. The reloc_count has already been adjusted
9256 to account for this entry. */
1419bbe5 9257 loc = relplt->contents + plt_index * RELOC_SIZE (htab);
cec5225b 9258 bfd_elfNN_swap_reloca_out (output_bfd, &rela, loc);
a06ea964
NC		 9259}
9260
9261/* Size sections even though they're not dynamic. We use it to setup
9262 _TLS_MODULE_BASE_, if needed. */
9263
9264static bfd_boolean
cec5225b 9265elfNN_aarch64_always_size_sections (bfd *output_bfd,
a06ea964
NC		 9266 struct bfd_link_info *info)
9267{
9268 asection *tls_sec;
9269
0e1862bb 9270 if (bfd_link_relocatable (info))
a06ea964
NC		 9271 return TRUE;
9272
9273 tls_sec = elf_hash_table (info)->tls_sec;
9274
9275 if (tls_sec)
9276 {
9277 struct elf_link_hash_entry *tlsbase;
9278
9279 tlsbase = elf_link_hash_lookup (elf_hash_table (info),
9280 "_TLS_MODULE_BASE_", TRUE, TRUE, FALSE);
9281
9282 if (tlsbase)
9283 {
9284 struct bfd_link_hash_entry *h = NULL;
9285 const struct elf_backend_data *bed =
9286 get_elf_backend_data (output_bfd);
9287
9288 if (!(_bfd_generic_link_add_one_symbol
9289 (info, output_bfd, "_TLS_MODULE_BASE_", BSF_LOCAL,
9290 tls_sec, 0, NULL, FALSE, bed->collect, &h)))
9291 return FALSE;
9292
9293 tlsbase->type = STT_TLS;
9294 tlsbase = (struct elf_link_hash_entry *) h;
9295 tlsbase->def_regular = 1;
9296 tlsbase->other = STV_HIDDEN;
9297 (*bed->elf_backend_hide_symbol) (info, tlsbase, TRUE);
9298 }
9299 }
9300
9301 return TRUE;
9302}
9303
9304/* Finish up dynamic symbol handling. We set the contents of various
9305 dynamic sections here. */
2d0ca824 9306
a06ea964 9307static bfd_boolean
cec5225b 9308elfNN_aarch64_finish_dynamic_symbol (bfd *output_bfd,
a06ea964
NC		 9309 struct bfd_link_info *info,
9310 struct elf_link_hash_entry *h,
9311 Elf_Internal_Sym *sym)
9312{
cec5225b
YZ		 9313 struct elf_aarch64_link_hash_table *htab;
9314 htab = elf_aarch64_hash_table (info);
a06ea964
NC		 9315
9316 if (h->plt.offset != (bfd_vma) - 1)
9317 {
1419bbe5
WN		 9318 asection *plt, *gotplt, *relplt;
9319
a06ea964 9320 /* This symbol has an entry in the procedure linkage table. Set
07d6d2b8 9321 it up. */
a06ea964 9322
1419bbe5
WN		 9323 /* When building a static executable, use .iplt, .igot.plt and
9324 .rela.iplt sections for STT_GNU_IFUNC symbols. */
9325 if (htab->root.splt != NULL)
9326 {
9327 plt = htab->root.splt;
9328 gotplt = htab->root.sgotplt;
9329 relplt = htab->root.srelplt;
9330 }
9331 else
9332 {
9333 plt = htab->root.iplt;
9334 gotplt = htab->root.igotplt;
9335 relplt = htab->root.irelplt;
9336 }
9337
9338 /* This symbol has an entry in the procedure linkage table. Set
9339 it up. */
9340 if ((h->dynindx == -1
0e1862bb 9341 && !((h->forced_local || bfd_link_executable (info))
1419bbe5
WN		 9342 && h->def_regular
9343 && h->type == STT_GNU_IFUNC))
9344 || plt == NULL
9345 || gotplt == NULL
9346 || relplt == NULL)
f955cccf 9347 return FALSE;
a06ea964 9348
1419bbe5 9349 elfNN_aarch64_create_small_pltn_entry (h, htab, output_bfd, info);
a06ea964
NC		 9350 if (!h->def_regular)
9351 {
9352 /* Mark the symbol as undefined, rather than as defined in
46b87d49 9353 the .plt section. */
a06ea964 9354 sym->st_shndx = SHN_UNDEF;
46b87d49
WN		 9355 /* If the symbol is weak we need to clear the value.
9356 Otherwise, the PLT entry would provide a definition for
9357 the symbol even if the symbol wasn't defined anywhere,
9358 and so the symbol would never be NULL. Leave the value if
9359 there were any relocations where pointer equality matters
9360 (this is a clue for the dynamic linker, to make function
9361 pointer comparisons work between an application and shared
9362 library). */
9363 if (!h->ref_regular_nonweak || !h->pointer_equality_needed)
9364 sym->st_value = 0;
a06ea964
NC		 9365 }
9366 }
9367
9368 if (h->got.offset != (bfd_vma) - 1
a377ae2a
SN		 9369 && elf_aarch64_hash_entry (h)->got_type == GOT_NORMAL
9370 /* Undefined weak symbol in static PIE resolves to 0 without
9371 any dynamic relocations. */
9372 && !UNDEFWEAK_NO_DYNAMIC_RELOC (info, h))
a06ea964
NC		 9373 {
9374 Elf_Internal_Rela rela;
9375 bfd_byte *loc;
9376
9377 /* This symbol has an entry in the global offset table. Set it
07d6d2b8 9378 up. */
a06ea964
NC		 9379 if (htab->root.sgot == NULL || htab->root.srelgot == NULL)
9380 abort ();
9381
9382 rela.r_offset = (htab->root.sgot->output_section->vma
9383 + htab->root.sgot->output_offset
9384 + (h->got.offset & ~(bfd_vma) 1));
9385
49206388
WN		 9386 if (h->def_regular
9387 && h->type == STT_GNU_IFUNC)
9388 {
0e1862bb 9389 if (bfd_link_pic (info))
49206388
WN		 9390 {
9391 /* Generate R_AARCH64_GLOB_DAT. */
9392 goto do_glob_dat;
9393 }
9394 else
9395 {
9396 asection *plt;
9397
9398 if (!h->pointer_equality_needed)
9399 abort ();
9400
9401 /* For non-shared object, we can't use .got.plt, which
9402 contains the real function address if we need pointer
9403 equality. We load the GOT entry with the PLT entry. */
9404 plt = htab->root.splt ? htab->root.splt : htab->root.iplt;
9405 bfd_put_NN (output_bfd, (plt->output_section->vma
9406 + plt->output_offset
9407 + h->plt.offset),
9408 htab->root.sgot->contents
9409 + (h->got.offset & ~(bfd_vma) 1));
9410 return TRUE;
9411 }
9412 }
0e1862bb 9413 else if (bfd_link_pic (info) && SYMBOL_REFERENCES_LOCAL (info, h))
a06ea964 9414 {
0ee3a6db 9415 if (!(h->def_regular || ELF_COMMON_DEF_P (h)))
a06ea964
NC		 9416 return FALSE;
9417
9418 BFD_ASSERT ((h->got.offset & 1) != 0);
a6bb11b2 9419 rela.r_info = ELFNN_R_INFO (0, AARCH64_R (RELATIVE));
a06ea964
NC		 9420 rela.r_addend = (h->root.u.def.value
9421 + h->root.u.def.section->output_section->vma
9422 + h->root.u.def.section->output_offset);
9423 }
9424 else
9425 {
dc1e8a47 9426 do_glob_dat:
a06ea964 9427 BFD_ASSERT ((h->got.offset & 1) == 0);
cec5225b 9428 bfd_put_NN (output_bfd, (bfd_vma) 0,
a06ea964 9429 htab->root.sgot->contents + h->got.offset);
a6bb11b2 9430 rela.r_info = ELFNN_R_INFO (h->dynindx, AARCH64_R (GLOB_DAT));
a06ea964
NC		 9431 rela.r_addend = 0;
9432 }
9433
9434 loc = htab->root.srelgot->contents;
9435 loc += htab->root.srelgot->reloc_count++ * RELOC_SIZE (htab);
cec5225b 9436 bfd_elfNN_swap_reloca_out (output_bfd, &rela, loc);
a06ea964
NC		 9437 }
9438
9439 if (h->needs_copy)
9440 {
9441 Elf_Internal_Rela rela;
5474d94f 9442 asection *s;
a06ea964
NC		 9443 bfd_byte *loc;
9444
9445 /* This symbol needs a copy reloc. Set it up. */
a06ea964
NC		 9446 if (h->dynindx == -1
9447 || (h->root.type != bfd_link_hash_defined
9448 && h->root.type != bfd_link_hash_defweak)
9d19e4fd 9449 || htab->root.srelbss == NULL)
a06ea964
NC		 9450 abort ();
9451
9452 rela.r_offset = (h->root.u.def.value
9453 + h->root.u.def.section->output_section->vma
9454 + h->root.u.def.section->output_offset);
a6bb11b2 9455 rela.r_info = ELFNN_R_INFO (h->dynindx, AARCH64_R (COPY));
a06ea964 9456 rela.r_addend = 0;
afbf7e8e 9457 if (h->root.u.def.section == htab->root.sdynrelro)
5474d94f
AM		 9458 s = htab->root.sreldynrelro;
9459 else
9460 s = htab->root.srelbss;
9461 loc = s->contents + s->reloc_count++ * RELOC_SIZE (htab);
cec5225b 9462 bfd_elfNN_swap_reloca_out (output_bfd, &rela, loc);
a06ea964
NC		 9463 }
9464
9465 /* Mark _DYNAMIC and _GLOBAL_OFFSET_TABLE_ as absolute. SYM may
9466 be NULL for local symbols. */
9467 if (sym != NULL
9637f6ef 9468 && (h == elf_hash_table (info)->hdynamic
a06ea964
NC		 9469 || h == elf_hash_table (info)->hgot))
9470 sym->st_shndx = SHN_ABS;
9471
9472 return TRUE;
9473}
9474
1419bbe5
WN		 9475/* Finish up local dynamic symbol handling. We set the contents of
9476 various dynamic sections here. */
9477
9478static bfd_boolean
9479elfNN_aarch64_finish_local_dynamic_symbol (void **slot, void *inf)
9480{
9481 struct elf_link_hash_entry *h
9482 = (struct elf_link_hash_entry *) *slot;
9483 struct bfd_link_info *info
9484 = (struct bfd_link_info *) inf;
9485
9486 return elfNN_aarch64_finish_dynamic_symbol (info->output_bfd,
9487 info, h, NULL);
9488}
9489
a06ea964 9490static void
cec5225b
YZ		 9491elfNN_aarch64_init_small_plt0_entry (bfd *output_bfd ATTRIBUTE_UNUSED,
9492 struct elf_aarch64_link_hash_table
a06ea964
NC		 9493 *htab)
9494{
9495 /* Fill in PLT0. Fixme:RR Note this doesn't distinguish between
9496 small and large plts and at the minute just generates
9497 the small PLT. */
9498
cec5225b 9499 /* PLT0 of the small PLT looks like this in ELF64 -
a06ea964
NC		 9500 stp x16, x30, [sp, #-16]! // Save the reloc and lr on stack.
9501 adrp x16, PLT_GOT + 16 // Get the page base of the GOTPLT
9502 ldr x17, [x16, #:lo12:PLT_GOT+16] // Load the address of the
9503 // symbol resolver
9504 add x16, x16, #:lo12:PLT_GOT+16 // Load the lo12 bits of the
9505 // GOTPLT entry for this.
9506 br x17
cec5225b 9507 PLT0 will be slightly different in ELF32 due to different got entry
2d0ca824 9508 size. */
caed7120 9509 bfd_vma plt_got_2nd_ent; /* Address of GOT[2]. */
a06ea964
NC		 9510 bfd_vma plt_base;
9511
9512
37c18eed
SD		 9513 memcpy (htab->root.splt->contents, htab->plt0_entry,
9514 htab->plt_header_size);
4d3bb356
SN		 9515
9516 /* PR 26312: Explicitly set the sh_entsize to 0 so that
9517 consumers do not think that the section contains fixed
9518 sized objects. */
9519 elf_section_data (htab->root.splt->output_section)->this_hdr.sh_entsize = 0;
a06ea964 9520
caed7120
YZ		 9521 plt_got_2nd_ent = (htab->root.sgotplt->output_section->vma
9522 + htab->root.sgotplt->output_offset
9523 + GOT_ENTRY_SIZE * 2);
a06ea964
NC		 9524
9525 plt_base = htab->root.splt->output_section->vma +
f44a1f8e 9526 htab->root.splt->output_offset;
a06ea964 9527
37c18eed
SD		 9528 /* First instruction in BTI enabled PLT stub is a BTI
9529 instruction so skip it. */
9530 bfd_byte *plt0_entry = htab->root.splt->contents;
9531 if (elf_aarch64_tdata (output_bfd)->plt_type & PLT_BTI)
9532 plt0_entry = plt0_entry + 4;
9533
a06ea964
NC		 9534 /* Fill in the top 21 bits for this: ADRP x16, PLT_GOT + n * 8.
9535 ADRP: ((PG(S+A)-PG(P)) >> 12) & 0x1fffff */
caed7120 9536 elf_aarch64_update_plt_entry (output_bfd, BFD_RELOC_AARCH64_ADR_HI21_PCREL,
37c18eed 9537 plt0_entry + 4,
caed7120 9538 PG (plt_got_2nd_ent) - PG (plt_base + 4));
a06ea964 9539
caed7120 9540 elf_aarch64_update_plt_entry (output_bfd, BFD_RELOC_AARCH64_LDSTNN_LO12,
37c18eed 9541 plt0_entry + 8,
caed7120 9542 PG_OFFSET (plt_got_2nd_ent));
a06ea964 9543
caed7120 9544 elf_aarch64_update_plt_entry (output_bfd, BFD_RELOC_AARCH64_ADD_LO12,
37c18eed 9545 plt0_entry + 12,
caed7120 9546 PG_OFFSET (plt_got_2nd_ent));
a06ea964
NC		 9547}
9548
9549static bfd_boolean
cec5225b 9550elfNN_aarch64_finish_dynamic_sections (bfd *output_bfd,
a06ea964
NC		 9551 struct bfd_link_info *info)
9552{
cec5225b 9553 struct elf_aarch64_link_hash_table *htab;
a06ea964
NC		 9554 bfd *dynobj;
9555 asection *sdyn;
9556
cec5225b 9557 htab = elf_aarch64_hash_table (info);
a06ea964
NC		 9558 dynobj = htab->root.dynobj;
9559 sdyn = bfd_get_linker_section (dynobj, ".dynamic");
9560
9561 if (htab->root.dynamic_sections_created)
9562 {
cec5225b 9563 ElfNN_External_Dyn *dyncon, *dynconend;
a06ea964
NC		 9564
9565 if (sdyn == NULL || htab->root.sgot == NULL)
9566 abort ();
9567
cec5225b
YZ		 9568 dyncon = (ElfNN_External_Dyn *) sdyn->contents;
9569 dynconend = (ElfNN_External_Dyn *) (sdyn->contents + sdyn->size);
a06ea964
NC		 9570 for (; dyncon < dynconend; dyncon++)
9571 {
9572 Elf_Internal_Dyn dyn;
9573 asection *s;
9574
cec5225b 9575 bfd_elfNN_swap_dyn_in (dynobj, dyncon, &dyn);
a06ea964
NC		 9576
9577 switch (dyn.d_tag)
9578 {
9579 default:
9580 continue;
9581
9582 case DT_PLTGOT:
9583 s = htab->root.sgotplt;
9584 dyn.d_un.d_ptr = s->output_section->vma + s->output_offset;
9585 break;
9586
9587 case DT_JMPREL:
4ade44b7
AM		 9588 s = htab->root.srelplt;
9589 dyn.d_un.d_ptr = s->output_section->vma + s->output_offset;
a06ea964
NC		 9590 break;
9591
9592 case DT_PLTRELSZ:
c955de36 9593 s = htab->root.srelplt;
a06ea964
NC		 9594 dyn.d_un.d_val = s->size;
9595 break;
9596
a06ea964
NC		 9597 case DT_TLSDESC_PLT:
9598 s = htab->root.splt;
9599 dyn.d_un.d_ptr = s->output_section->vma + s->output_offset
9bcc30e4 9600 + htab->root.tlsdesc_plt;
a06ea964
NC		 9601 break;
9602
9603 case DT_TLSDESC_GOT:
9604 s = htab->root.sgot;
9bcc30e4 9605 BFD_ASSERT (htab->root.tlsdesc_got != (bfd_vma)-1);
a06ea964 9606 dyn.d_un.d_ptr = s->output_section->vma + s->output_offset
9bcc30e4 9607 + htab->root.tlsdesc_got;
a06ea964
NC		 9608 break;
9609 }
9610
cec5225b 9611 bfd_elfNN_swap_dyn_out (output_bfd, &dyn, dyncon);
a06ea964
NC		 9612 }
9613
9614 }
9615
9616 /* Fill in the special first entry in the procedure linkage table. */
9617 if (htab->root.splt && htab->root.splt->size > 0)
9618 {
cec5225b 9619 elfNN_aarch64_init_small_plt0_entry (output_bfd, htab);
a06ea964 9620
9bcc30e4 9621 if (htab->root.tlsdesc_plt && !(info->flags & DF_BIND_NOW))
a06ea964 9622 {
9bcc30e4 9623 BFD_ASSERT (htab->root.tlsdesc_got != (bfd_vma)-1);
cec5225b 9624 bfd_put_NN (output_bfd, (bfd_vma) 0,
9bcc30e4 9625 htab->root.sgot->contents + htab->root.tlsdesc_got);
a06ea964 9626
37c18eed
SD		 9627 const bfd_byte *entry = elfNN_aarch64_tlsdesc_small_plt_entry;
9628 htab->tlsdesc_plt_entry_size = PLT_TLSDESC_ENTRY_SIZE;
9629
9630 aarch64_plt_type type = elf_aarch64_tdata (output_bfd)->plt_type;
1dbade74 9631 if (type == PLT_BTI || type == PLT_BTI_PAC)
37c18eed
SD		 9632 {
9633 entry = elfNN_aarch64_tlsdesc_small_plt_bti_entry;
37c18eed
SD		 9634 }
9635
9bcc30e4 9636 memcpy (htab->root.splt->contents + htab->root.tlsdesc_plt,
37c18eed 9637 entry, htab->tlsdesc_plt_entry_size);
a06ea964
NC		 9638
9639 {
9640 bfd_vma adrp1_addr =
9641 htab->root.splt->output_section->vma
9bcc30e4
L		 9642 + htab->root.splt->output_offset
9643 + htab->root.tlsdesc_plt + 4;
a06ea964 9644
caed7120 9645 bfd_vma adrp2_addr = adrp1_addr + 4;
a06ea964
NC		 9646
9647 bfd_vma got_addr =
9648 htab->root.sgot->output_section->vma
9649 + htab->root.sgot->output_offset;
9650
9651 bfd_vma pltgot_addr =
9652 htab->root.sgotplt->output_section->vma
9653 + htab->root.sgotplt->output_offset;
9654
9bcc30e4 9655 bfd_vma dt_tlsdesc_got = got_addr + htab->root.tlsdesc_got;
caed7120
YZ		 9656
9657 bfd_byte *plt_entry =
9bcc30e4 9658 htab->root.splt->contents + htab->root.tlsdesc_plt;
a06ea964 9659
37c18eed
SD		 9660 /* First instruction in BTI enabled PLT stub is a BTI
9661 instruction so skip it. */
9662 if (type & PLT_BTI)
9663 {
9664 plt_entry = plt_entry + 4;
9665 adrp1_addr = adrp1_addr + 4;
9666 adrp2_addr = adrp2_addr + 4;
9667 }
9668
a06ea964 9669 /* adrp x2, DT_TLSDESC_GOT */
caed7120
YZ		 9670 elf_aarch64_update_plt_entry (output_bfd,
9671 BFD_RELOC_AARCH64_ADR_HI21_PCREL,
9672 plt_entry + 4,
9673 (PG (dt_tlsdesc_got)
9674 - PG (adrp1_addr)));
a06ea964
NC		 9675
9676 /* adrp x3, 0 */
caed7120
YZ		 9677 elf_aarch64_update_plt_entry (output_bfd,
9678 BFD_RELOC_AARCH64_ADR_HI21_PCREL,
9679 plt_entry + 8,
9680 (PG (pltgot_addr)
9681 - PG (adrp2_addr)));
a06ea964
NC		 9682
9683 /* ldr x2, [x2, #0] */
caed7120
YZ		 9684 elf_aarch64_update_plt_entry (output_bfd,
9685 BFD_RELOC_AARCH64_LDSTNN_LO12,
9686 plt_entry + 12,
9687 PG_OFFSET (dt_tlsdesc_got));
a06ea964
NC		 9688
9689 /* add x3, x3, 0 */
caed7120
YZ		 9690 elf_aarch64_update_plt_entry (output_bfd,
9691 BFD_RELOC_AARCH64_ADD_LO12,
9692 plt_entry + 16,
9693 PG_OFFSET (pltgot_addr));
a06ea964
NC		 9694 }
9695 }
9696 }
9697
9698 if (htab->root.sgotplt)
9699 {
9700 if (bfd_is_abs_section (htab->root.sgotplt->output_section))
9701 {
4eca0228 9702 _bfd_error_handler
871b3ab2 9703 (_("discarded output section: `%pA'"), htab->root.sgotplt);
a06ea964
NC		 9704 return FALSE;
9705 }
9706
9707 /* Fill in the first three entries in the global offset table. */
9708 if (htab->root.sgotplt->size > 0)
9709 {
8db339a6
MS		 9710 bfd_put_NN (output_bfd, (bfd_vma) 0, htab->root.sgotplt->contents);
9711
a06ea964 9712 /* Write GOT[1] and GOT[2], needed for the dynamic linker. */
cec5225b 9713 bfd_put_NN (output_bfd,
a06ea964
NC		 9714 (bfd_vma) 0,
9715 htab->root.sgotplt->contents + GOT_ENTRY_SIZE);
cec5225b 9716 bfd_put_NN (output_bfd,
a06ea964
NC		 9717 (bfd_vma) 0,
9718 htab->root.sgotplt->contents + GOT_ENTRY_SIZE * 2);
9719 }
9720
8db339a6
MS		 9721 if (htab->root.sgot)
9722 {
9723 if (htab->root.sgot->size > 0)
9724 {
9725 bfd_vma addr =
9726 sdyn ? sdyn->output_section->vma + sdyn->output_offset : 0;
9727 bfd_put_NN (output_bfd, addr, htab->root.sgot->contents);
9728 }
9729 }
9730
a06ea964
NC		 9731 elf_section_data (htab->root.sgotplt->output_section)->
9732 this_hdr.sh_entsize = GOT_ENTRY_SIZE;
9733 }
9734
9735 if (htab->root.sgot && htab->root.sgot->size > 0)
9736 elf_section_data (htab->root.sgot->output_section)->this_hdr.sh_entsize
9737 = GOT_ENTRY_SIZE;
9738
1419bbe5
WN		 9739 /* Fill PLT and GOT entries for local STT_GNU_IFUNC symbols. */
9740 htab_traverse (htab->loc_hash_table,
9741 elfNN_aarch64_finish_local_dynamic_symbol,
9742 info);
9743
a06ea964
NC		 9744 return TRUE;
9745}
9746
37c18eed
SD		 9747/* Check if BTI enabled PLTs are needed. Returns the type needed. */
9748static aarch64_plt_type
9749get_plt_type (bfd *abfd)
9750{
9751 aarch64_plt_type ret = PLT_NORMAL;
9752 bfd_byte *contents, *extdyn, *extdynend;
9753 asection *sec = bfd_get_section_by_name (abfd, ".dynamic");
9754 if (!sec || !bfd_malloc_and_get_section (abfd, sec, &contents))
9755 return ret;
9756 extdyn = contents;
9757 extdynend = contents + sec->size;
9758 for (; extdyn < extdynend; extdyn += sizeof (ElfNN_External_Dyn))
9759 {
9760 Elf_Internal_Dyn dyn;
9761 bfd_elfNN_swap_dyn_in (abfd, extdyn, &dyn);
9762
9763 /* Let's check the processor specific dynamic array tags. */
9764 bfd_vma tag = dyn.d_tag;
9765 if (tag < DT_LOPROC || tag > DT_HIPROC)
9766 continue;
9767
9768 switch (tag)
9769 {
9770 case DT_AARCH64_BTI_PLT:
1dbade74
SD		 9771 ret |= PLT_BTI;
9772 break;
9773
9774 case DT_AARCH64_PAC_PLT:
9775 ret |= PLT_PAC;
37c18eed
SD		 9776 break;
9777
9778 default: break;
9779 }
9780 }
9781 free (contents);
9782 return ret;
9783}
9784
9785static long
9786elfNN_aarch64_get_synthetic_symtab (bfd *abfd,
9787 long symcount,
9788 asymbol **syms,
9789 long dynsymcount,
9790 asymbol **dynsyms,
9791 asymbol **ret)
9792{
9793 elf_aarch64_tdata (abfd)->plt_type = get_plt_type (abfd);
9794 return _bfd_elf_get_synthetic_symtab (abfd, symcount, syms,
9795 dynsymcount, dynsyms, ret);
9796}
9797
a06ea964
NC		 9798/* Return address for Ith PLT stub in section PLT, for relocation REL
9799 or (bfd_vma) -1 if it should not be included. */
9800
9801static bfd_vma
cec5225b 9802elfNN_aarch64_plt_sym_val (bfd_vma i, const asection *plt,
a06ea964
NC		 9803 const arelent *rel ATTRIBUTE_UNUSED)
9804{
37c18eed
SD		 9805 size_t plt0_size = PLT_ENTRY_SIZE;
9806 size_t pltn_size = PLT_SMALL_ENTRY_SIZE;
9807
1dbade74
SD		 9808 if (elf_aarch64_tdata (plt->owner)->plt_type == PLT_BTI_PAC)
9809 {
1dbade74
SD		 9810 if (elf_elfheader (plt->owner)->e_type == ET_EXEC)
9811 pltn_size = PLT_BTI_PAC_SMALL_ENTRY_SIZE;
9812 else
9813 pltn_size = PLT_PAC_SMALL_ENTRY_SIZE;
9814 }
9815 else if (elf_aarch64_tdata (plt->owner)->plt_type == PLT_BTI)
37c18eed 9816 {
37c18eed
SD		 9817 if (elf_elfheader (plt->owner)->e_type == ET_EXEC)
9818 pltn_size = PLT_BTI_SMALL_ENTRY_SIZE;
9819 }
1dbade74
SD		 9820 else if (elf_aarch64_tdata (plt->owner)->plt_type == PLT_PAC)
9821 {
1dbade74
SD		 9822 pltn_size = PLT_PAC_SMALL_ENTRY_SIZE;
9823 }
9824
37c18eed 9825 return plt->vma + plt0_size + i * pltn_size;
a06ea964
NC		 9826}
9827
d691934d
NC		 9828/* Returns TRUE if NAME is an AArch64 mapping symbol.
9829 The ARM ELF standard defines $x (for A64 code) and $d (for data).
9830 It also allows a period initiated suffix to be added to the symbol, ie:
9831 "$[adtx]\.[:sym_char]+". */
9832
9833static bfd_boolean
9834is_aarch64_mapping_symbol (const char * name)
9835{
9836 return name != NULL /* Paranoia. */
9837 && name[0] == '$' /* Note: if objcopy --prefix-symbols has been used then
9838 the mapping symbols could have acquired a prefix.
9839 We do not support this here, since such symbols no
9840 longer conform to the ARM ELF ABI. */
9841 && (name[1] == 'd' || name[1] == 'x')
9842 && (name[2] == 0 || name[2] == '.');
9843 /* FIXME: Strictly speaking the symbol is only a valid mapping symbol if
9844 any characters that follow the period are legal characters for the body
9845 of a symbol's name. For now we just assume that this is the case. */
9846}
9847
9848/* Make sure that mapping symbols in object files are not removed via the
9849 "strip --strip-unneeded" tool. These symbols might needed in order to
9850 correctly generate linked files. Once an object file has been linked,
9851 it should be safe to remove them. */
9852
9853static void
9854elfNN_aarch64_backend_symbol_processing (bfd *abfd, asymbol *sym)
9855{
9856 if (((abfd->flags & (EXEC_P | DYNAMIC)) == 0)
9857 && sym->section != bfd_abs_section_ptr
9858 && is_aarch64_mapping_symbol (sym->name))
9859 sym->flags |= BSF_KEEP;
9860}
9861
cd702818
SD		 9862/* Implement elf_backend_setup_gnu_properties for AArch64. It serves as a
9863 wrapper function for _bfd_aarch64_elf_link_setup_gnu_properties to account
9864 for the effect of GNU properties of the output_bfd. */
9865static bfd *
9866elfNN_aarch64_link_setup_gnu_properties (struct bfd_link_info *info)
9867{
9868 uint32_t prop = elf_aarch64_tdata (info->output_bfd)->gnu_and_prop;
9869 bfd *pbfd = _bfd_aarch64_elf_link_setup_gnu_properties (info, &prop);
9870 elf_aarch64_tdata (info->output_bfd)->gnu_and_prop = prop;
37c18eed
SD		 9871 elf_aarch64_tdata (info->output_bfd)->plt_type
9872 |= (prop & GNU_PROPERTY_AARCH64_FEATURE_1_BTI) ? PLT_BTI : 0;
9873 setup_plt_values (info, elf_aarch64_tdata (info->output_bfd)->plt_type);
cd702818
SD		 9874 return pbfd;
9875}
9876
9877/* Implement elf_backend_merge_gnu_properties for AArch64. It serves as a
9878 wrapper function for _bfd_aarch64_elf_merge_gnu_properties to account
9879 for the effect of GNU properties of the output_bfd. */
9880static bfd_boolean
9881elfNN_aarch64_merge_gnu_properties (struct bfd_link_info *info,
4e539114 9882 bfd *abfd, bfd *bbfd,
cd702818
SD		 9883 elf_property *aprop,
9884 elf_property *bprop)
9885{
9886 uint32_t prop
9887 = elf_aarch64_tdata (info->output_bfd)->gnu_and_prop;
37c18eed
SD		 9888
9889 /* If output has been marked with BTI using command line argument, give out
9890 warning if necessary. */
4e539114
SD		 9891 /* Properties are merged per type, hence only check for warnings when merging
9892 GNU_PROPERTY_AARCH64_FEATURE_1_AND. */
9893 if (((aprop && aprop->pr_type == GNU_PROPERTY_AARCH64_FEATURE_1_AND)
9894 || (bprop && bprop->pr_type == GNU_PROPERTY_AARCH64_FEATURE_1_AND))
9895 && (prop & GNU_PROPERTY_AARCH64_FEATURE_1_BTI)
37c18eed
SD		 9896 && (!elf_aarch64_tdata (info->output_bfd)->no_bti_warn))
9897 {
9898 if ((aprop && !(aprop->u.number & GNU_PROPERTY_AARCH64_FEATURE_1_BTI))
4e539114 9899 || !aprop)
37c18eed 9900 {
8bf6d176 9901 _bfd_error_handler (_("%pB: warning: BTI turned on by -z force-bti when "
4e539114
SD		 9902 "all inputs do not have BTI in NOTE section."),
9903 abfd);
9904 }
9905 if ((bprop && !(bprop->u.number & GNU_PROPERTY_AARCH64_FEATURE_1_BTI))
9906 || !bprop)
9907 {
8bf6d176 9908 _bfd_error_handler (_("%pB: warning: BTI turned on by -z force-bti when "
4e539114
SD		 9909 "all inputs do not have BTI in NOTE section."),
9910 bbfd);
37c18eed
SD		 9911 }
9912 }
9913
cd702818
SD		 9914 return _bfd_aarch64_elf_merge_gnu_properties (info, abfd, aprop,
9915 bprop, prop);
9916}
a06ea964
NC		 9917
9918/* We use this so we can override certain functions
9919 (though currently we don't). */
9920
cec5225b 9921const struct elf_size_info elfNN_aarch64_size_info =
a06ea964 9922{
cec5225b
YZ		 9923 sizeof (ElfNN_External_Ehdr),
9924 sizeof (ElfNN_External_Phdr),
9925 sizeof (ElfNN_External_Shdr),
9926 sizeof (ElfNN_External_Rel),
9927 sizeof (ElfNN_External_Rela),
9928 sizeof (ElfNN_External_Sym),
9929 sizeof (ElfNN_External_Dyn),
a06ea964
NC		 9930 sizeof (Elf_External_Note),
9931 4, /* Hash table entry size. */
9932 1, /* Internal relocs per external relocs. */
cec5225b
YZ		 9933 ARCH_SIZE, /* Arch size. */
9934 LOG_FILE_ALIGN, /* Log_file_align. */
9935 ELFCLASSNN, EV_CURRENT,
9936 bfd_elfNN_write_out_phdrs,
9937 bfd_elfNN_write_shdrs_and_ehdr,
9938 bfd_elfNN_checksum_contents,
9939 bfd_elfNN_write_relocs,
9940 bfd_elfNN_swap_symbol_in,
9941 bfd_elfNN_swap_symbol_out,
9942 bfd_elfNN_slurp_reloc_table,
9943 bfd_elfNN_slurp_symbol_table,
9944 bfd_elfNN_swap_dyn_in,
9945 bfd_elfNN_swap_dyn_out,
9946 bfd_elfNN_swap_reloc_in,
9947 bfd_elfNN_swap_reloc_out,
9948 bfd_elfNN_swap_reloca_in,
9949 bfd_elfNN_swap_reloca_out
a06ea964
NC		 9950};
9951
9952#define ELF_ARCH bfd_arch_aarch64
9953#define ELF_MACHINE_CODE EM_AARCH64
9954#define ELF_MAXPAGESIZE 0x10000
9955#define ELF_MINPAGESIZE 0x1000
9956#define ELF_COMMONPAGESIZE 0x1000
9957
07d6d2b8 9958#define bfd_elfNN_close_and_cleanup \
cec5225b 9959 elfNN_aarch64_close_and_cleanup
a06ea964 9960
07d6d2b8 9961#define bfd_elfNN_bfd_free_cached_info \
cec5225b 9962 elfNN_aarch64_bfd_free_cached_info
a06ea964 9963
cec5225b
YZ		 9964#define bfd_elfNN_bfd_is_target_special_symbol \
9965 elfNN_aarch64_is_target_special_symbol
a06ea964 9966
07d6d2b8 9967#define bfd_elfNN_bfd_link_hash_table_create \
cec5225b 9968 elfNN_aarch64_link_hash_table_create
a06ea964 9969
cec5225b
YZ		 9970#define bfd_elfNN_bfd_merge_private_bfd_data \
9971 elfNN_aarch64_merge_private_bfd_data
a06ea964 9972
cec5225b
YZ		 9973#define bfd_elfNN_bfd_print_private_bfd_data \
9974 elfNN_aarch64_print_private_bfd_data
a06ea964 9975
cec5225b
YZ		 9976#define bfd_elfNN_bfd_reloc_type_lookup \
9977 elfNN_aarch64_reloc_type_lookup
a06ea964 9978
cec5225b
YZ		 9979#define bfd_elfNN_bfd_reloc_name_lookup \
9980 elfNN_aarch64_reloc_name_lookup
a06ea964 9981
cec5225b
YZ		 9982#define bfd_elfNN_bfd_set_private_flags \
9983 elfNN_aarch64_set_private_flags
a06ea964 9984
cec5225b
YZ		 9985#define bfd_elfNN_find_inliner_info \
9986 elfNN_aarch64_find_inliner_info
a06ea964 9987
37c18eed
SD		 9988#define bfd_elfNN_get_synthetic_symtab \
9989 elfNN_aarch64_get_synthetic_symtab
9990
cec5225b
YZ		 9991#define bfd_elfNN_mkobject \
9992 elfNN_aarch64_mkobject
a06ea964 9993
cec5225b
YZ		 9994#define bfd_elfNN_new_section_hook \
9995 elfNN_aarch64_new_section_hook
a06ea964
NC		 9996
9997#define elf_backend_adjust_dynamic_symbol \
cec5225b 9998 elfNN_aarch64_adjust_dynamic_symbol
a06ea964
NC		 9999
10000#define elf_backend_always_size_sections \
cec5225b 10001 elfNN_aarch64_always_size_sections
a06ea964
NC		 10002
10003#define elf_backend_check_relocs \
cec5225b 10004 elfNN_aarch64_check_relocs
a06ea964
NC		 10005
10006#define elf_backend_copy_indirect_symbol \
cec5225b 10007 elfNN_aarch64_copy_indirect_symbol
a06ea964 10008
823710d5
SN		 10009#define elf_backend_merge_symbol_attribute \
10010 elfNN_aarch64_merge_symbol_attribute
10011
a06ea964
NC		 10012/* Create .dynbss, and .rela.bss sections in DYNOBJ, and set up shortcuts
10013 to them in our hash. */
10014#define elf_backend_create_dynamic_sections \
cec5225b 10015 elfNN_aarch64_create_dynamic_sections
a06ea964
NC		 10016
10017#define elf_backend_init_index_section \
10018 _bfd_elf_init_2_index_sections
10019
a06ea964 10020#define elf_backend_finish_dynamic_sections \
cec5225b 10021 elfNN_aarch64_finish_dynamic_sections
a06ea964
NC		 10022
10023#define elf_backend_finish_dynamic_symbol \
cec5225b 10024 elfNN_aarch64_finish_dynamic_symbol
a06ea964 10025
a06ea964 10026#define elf_backend_object_p \
cec5225b 10027 elfNN_aarch64_object_p
a06ea964 10028
07d6d2b8 10029#define elf_backend_output_arch_local_syms \
cec5225b 10030 elfNN_aarch64_output_arch_local_syms
a06ea964 10031
e7679060
AM		 10032#define elf_backend_maybe_function_sym \
10033 elfNN_aarch64_maybe_function_sym
10034
a06ea964 10035#define elf_backend_plt_sym_val \
cec5225b 10036 elfNN_aarch64_plt_sym_val
a06ea964 10037
ed7e9d0b
AM		 10038#define elf_backend_init_file_header \
10039 elfNN_aarch64_init_file_header
a06ea964
NC		 10040
10041#define elf_backend_relocate_section \
cec5225b 10042 elfNN_aarch64_relocate_section
a06ea964
NC		 10043
10044#define elf_backend_reloc_type_class \
cec5225b 10045 elfNN_aarch64_reloc_type_class
a06ea964 10046
a06ea964 10047#define elf_backend_section_from_shdr \
cec5225b 10048 elfNN_aarch64_section_from_shdr
a06ea964
NC		 10049
10050#define elf_backend_size_dynamic_sections \
cec5225b 10051 elfNN_aarch64_size_dynamic_sections
a06ea964
NC		 10052
10053#define elf_backend_size_info \
cec5225b 10054 elfNN_aarch64_size_info
a06ea964 10055
68fcca92
JW		 10056#define elf_backend_write_section \
10057 elfNN_aarch64_write_section
10058
d691934d
NC		 10059#define elf_backend_symbol_processing \
10060 elfNN_aarch64_backend_symbol_processing
10061
cd702818
SD		 10062#define elf_backend_setup_gnu_properties \
10063 elfNN_aarch64_link_setup_gnu_properties
10064
10065#define elf_backend_merge_gnu_properties \
10066 elfNN_aarch64_merge_gnu_properties
10067
a06ea964 10068#define elf_backend_can_refcount 1
59c108f7 10069#define elf_backend_can_gc_sections 1
a06ea964
NC		 10070#define elf_backend_plt_readonly 1
10071#define elf_backend_want_got_plt 1
10072#define elf_backend_want_plt_sym 0
5474d94f 10073#define elf_backend_want_dynrelro 1
a06ea964
NC		 10074#define elf_backend_may_use_rel_p 0
10075#define elf_backend_may_use_rela_p 1
10076#define elf_backend_default_use_rela_p 1
07d6d2b8 10077#define elf_backend_rela_normal 1
64f52338 10078#define elf_backend_dtrel_excludes_plt 1
a06ea964 10079#define elf_backend_got_header_size (GOT_ENTRY_SIZE * 3)
c495064d 10080#define elf_backend_default_execstack 0
32f573bc 10081#define elf_backend_extern_protected_data 1
7f784814 10082#define elf_backend_hash_symbol elf_aarch64_hash_symbol
a06ea964 10083
07d6d2b8 10084#undef elf_backend_obj_attrs_section
a06ea964
NC		 10085#define elf_backend_obj_attrs_section ".ARM.attributes"
10086
cec5225b 10087#include "elfNN-target.h"
a75cf613
ES		 10088
10089/* CloudABI support. */
10090
10091#undef TARGET_LITTLE_SYM
10092#define TARGET_LITTLE_SYM aarch64_elfNN_le_cloudabi_vec
10093#undef TARGET_LITTLE_NAME
10094#define TARGET_LITTLE_NAME "elfNN-littleaarch64-cloudabi"
10095#undef TARGET_BIG_SYM
10096#define TARGET_BIG_SYM aarch64_elfNN_be_cloudabi_vec
10097#undef TARGET_BIG_NAME
10098#define TARGET_BIG_NAME "elfNN-bigaarch64-cloudabi"
10099
10100#undef ELF_OSABI
10101#define ELF_OSABI ELFOSABI_CLOUDABI
10102
10103#undef elfNN_bed
10104#define elfNN_bed elfNN_aarch64_cloudabi_bed
10105
10106#include "elfNN-target.h"
GDB Binutils - Deliverables
This page took 1.234148 seconds and 4 git commands to generate.