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[PATCH] bfd: tweak SET_ARCH_MACH of aout-cris.c
[deliverable/binutils-gdb.git] / bfd / elfnn-aarch64.c
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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
2573 /* Track dynamic relocs copied for this symbol. */
2574 struct elf_dyn_relocs *dyn_relocs;
2575
a06ea964
NC		 2576 /* Since PLT entries have variable size, we need to record the
2577 index into .got.plt instead of recomputing it from the PLT
2578 offset. */
2579 bfd_signed_vma plt_got_offset;
2580
2581 /* Bit mask representing the type of GOT entry(s) if any required by
2582 this symbol. */
2583 unsigned int got_type;
2584
2585 /* A pointer to the most recently used stub hash entry against this
2586 symbol. */
cec5225b 2587 struct elf_aarch64_stub_hash_entry *stub_cache;
a06ea964
NC		 2588
2589 /* Offset of the GOTPLT entry reserved for the TLS descriptor. The offset
2590 is from the end of the jump table and reserved entries within the PLTGOT.
2591
2592 The magic value (bfd_vma) -1 indicates that an offset has not
2593 be allocated. */
2594 bfd_vma tlsdesc_got_jump_table_offset;
2595};
2596
2597static unsigned int
cec5225b 2598elfNN_aarch64_symbol_got_type (struct elf_link_hash_entry *h,
a06ea964
NC		 2599 bfd *abfd,
2600 unsigned long r_symndx)
2601{
2602 if (h)
cec5225b 2603 return elf_aarch64_hash_entry (h)->got_type;
a06ea964 2604
cec5225b 2605 if (! elf_aarch64_locals (abfd))
a06ea964
NC		 2606 return GOT_UNKNOWN;
2607
cec5225b 2608 return elf_aarch64_locals (abfd)[r_symndx].got_type;
a06ea964
NC		 2609}
2610
a06ea964 2611/* Get the AArch64 elf linker hash table from a link_info structure. */
cec5225b
YZ		 2612#define elf_aarch64_hash_table(info) \
2613 ((struct elf_aarch64_link_hash_table *) ((info)->hash))
a06ea964
NC		 2614
2615#define aarch64_stub_hash_lookup(table, string, create, copy) \
cec5225b 2616 ((struct elf_aarch64_stub_hash_entry *) \
a06ea964
NC		 2617 bfd_hash_lookup ((table), (string), (create), (copy)))
2618
2619/* AArch64 ELF linker hash table. */
cec5225b 2620struct elf_aarch64_link_hash_table
a06ea964
NC		 2621{
2622 /* The main hash table. */
2623 struct elf_link_hash_table root;
2624
2625 /* Nonzero to force PIC branch veneers. */
2626 int pic_veneer;
2627
68fcca92
JW		 2628 /* Fix erratum 835769. */
2629 int fix_erratum_835769;
2630
4106101c 2631 /* Fix erratum 843419. */
739b5c9c 2632 erratum_84319_opts fix_erratum_843419;
4106101c 2633
1f56df9d
JW		 2634 /* Don't apply link-time values for dynamic relocations. */
2635 int no_apply_dynamic_relocs;
2636
a06ea964
NC		 2637 /* The number of bytes in the initial entry in the PLT. */
2638 bfd_size_type plt_header_size;
2639
37c18eed
SD		 2640 /* The bytes of the initial PLT entry. */
2641 const bfd_byte *plt0_entry;
2642
2643 /* The number of bytes in the subsequent PLT entries. */
a06ea964
NC		 2644 bfd_size_type plt_entry_size;
2645
37c18eed
SD		 2646 /* The bytes of the subsequent PLT entry. */
2647 const bfd_byte *plt_entry;
2648
a06ea964
NC		 2649 /* Small local sym cache. */
2650 struct sym_cache sym_cache;
2651
2652 /* For convenience in allocate_dynrelocs. */
2653 bfd *obfd;
2654
2655 /* The amount of space used by the reserved portion of the sgotplt
2656 section, plus whatever space is used by the jump slots. */
2657 bfd_vma sgotplt_jump_table_size;
2658
2659 /* The stub hash table. */
2660 struct bfd_hash_table stub_hash_table;
2661
2662 /* Linker stub bfd. */
2663 bfd *stub_bfd;
2664
2665 /* Linker call-backs. */
2666 asection *(*add_stub_section) (const char *, asection *);
2667 void (*layout_sections_again) (void);
2668
2669 /* Array to keep track of which stub sections have been created, and
2670 information on stub grouping. */
2671 struct map_stub
2672 {
2673 /* This is the section to which stubs in the group will be
2674 attached. */
2675 asection *link_sec;
2676 /* The stub section. */
2677 asection *stub_sec;
2678 } *stub_group;
2679
cec5225b 2680 /* Assorted information used by elfNN_aarch64_size_stubs. */
a06ea964 2681 unsigned int bfd_count;
7292b3ac 2682 unsigned int top_index;
a06ea964
NC		 2683 asection **input_list;
2684
823710d5
SN		 2685 /* JUMP_SLOT relocs for variant PCS symbols may be present. */
2686 int variant_pcs;
2687
a06ea964
NC		 2688 /* The offset into splt of the PLT entry for the TLS descriptor
2689 resolver. Special values are 0, if not necessary (or not found
2690 to be necessary yet), and -1 if needed but not determined
2691 yet. */
2692 bfd_vma tlsdesc_plt;
2693
37c18eed
SD		 2694 /* The number of bytes in the PLT enty for the TLS descriptor. */
2695 bfd_size_type tlsdesc_plt_entry_size;
2696
a06ea964
NC		 2697 /* The GOT offset for the lazy trampoline. Communicated to the
2698 loader via DT_TLSDESC_GOT. The magic value (bfd_vma) -1
2699 indicates an offset is not allocated. */
2700 bfd_vma dt_tlsdesc_got;
1419bbe5
WN		 2701
2702 /* Used by local STT_GNU_IFUNC symbols. */
2703 htab_t loc_hash_table;
2704 void * loc_hash_memory;
a06ea964
NC		 2705};
2706
a06ea964
NC		 2707/* Create an entry in an AArch64 ELF linker hash table. */
2708
2709static struct bfd_hash_entry *
cec5225b 2710elfNN_aarch64_link_hash_newfunc (struct bfd_hash_entry *entry,
a06ea964
NC		 2711 struct bfd_hash_table *table,
2712 const char *string)
2713{
cec5225b
YZ		 2714 struct elf_aarch64_link_hash_entry *ret =
2715 (struct elf_aarch64_link_hash_entry *) entry;
a06ea964
NC		 2716
2717 /* Allocate the structure if it has not already been allocated by a
2718 subclass. */
2719 if (ret == NULL)
2720 ret = bfd_hash_allocate (table,
cec5225b 2721 sizeof (struct elf_aarch64_link_hash_entry));
a06ea964
NC		 2722 if (ret == NULL)
2723 return (struct bfd_hash_entry *) ret;
2724
2725 /* Call the allocation method of the superclass. */
cec5225b 2726 ret = ((struct elf_aarch64_link_hash_entry *)
a06ea964
NC		 2727 _bfd_elf_link_hash_newfunc ((struct bfd_hash_entry *) ret,
2728 table, string));
2729 if (ret != NULL)
2730 {
2731 ret->dyn_relocs = NULL;
a06ea964
NC		 2732 ret->got_type = GOT_UNKNOWN;
2733 ret->plt_got_offset = (bfd_vma) - 1;
2734 ret->stub_cache = NULL;
2735 ret->tlsdesc_got_jump_table_offset = (bfd_vma) - 1;
2736 }
2737
2738 return (struct bfd_hash_entry *) ret;
2739}
2740
2741/* Initialize an entry in the stub hash table. */
2742
2743static struct bfd_hash_entry *
2744stub_hash_newfunc (struct bfd_hash_entry *entry,
2745 struct bfd_hash_table *table, const char *string)
2746{
2747 /* Allocate the structure if it has not already been allocated by a
2748 subclass. */
2749 if (entry == NULL)
2750 {
2751 entry = bfd_hash_allocate (table,
2752 sizeof (struct
cec5225b 2753 elf_aarch64_stub_hash_entry));
a06ea964
NC		 2754 if (entry == NULL)
2755 return entry;
2756 }
2757
2758 /* Call the allocation method of the superclass. */
2759 entry = bfd_hash_newfunc (entry, table, string);
2760 if (entry != NULL)
2761 {
cec5225b 2762 struct elf_aarch64_stub_hash_entry *eh;
a06ea964
NC		 2763
2764 /* Initialize the local fields. */
cec5225b 2765 eh = (struct elf_aarch64_stub_hash_entry *) entry;
4106101c 2766 eh->adrp_offset = 0;
a06ea964
NC		 2767 eh->stub_sec = NULL;
2768 eh->stub_offset = 0;
2769 eh->target_value = 0;
2770 eh->target_section = NULL;
2771 eh->stub_type = aarch64_stub_none;
2772 eh->h = NULL;
2773 eh->id_sec = NULL;
2774 }
2775
2776 return entry;
2777}
2778
1419bbe5
WN		 2779/* Compute a hash of a local hash entry. We use elf_link_hash_entry
2780 for local symbol so that we can handle local STT_GNU_IFUNC symbols
2781 as global symbol. We reuse indx and dynstr_index for local symbol
2782 hash since they aren't used by global symbols in this backend. */
2783
2784static hashval_t
2785elfNN_aarch64_local_htab_hash (const void *ptr)
2786{
2787 struct elf_link_hash_entry *h
2788 = (struct elf_link_hash_entry *) ptr;
2789 return ELF_LOCAL_SYMBOL_HASH (h->indx, h->dynstr_index);
2790}
2791
2792/* Compare local hash entries. */
2793
2794static int
2795elfNN_aarch64_local_htab_eq (const void *ptr1, const void *ptr2)
2796{
2797 struct elf_link_hash_entry *h1
2798 = (struct elf_link_hash_entry *) ptr1;
2799 struct elf_link_hash_entry *h2
2800 = (struct elf_link_hash_entry *) ptr2;
2801
2802 return h1->indx == h2->indx && h1->dynstr_index == h2->dynstr_index;
2803}
2804
2805/* Find and/or create a hash entry for local symbol. */
2806
2807static struct elf_link_hash_entry *
2808elfNN_aarch64_get_local_sym_hash (struct elf_aarch64_link_hash_table *htab,
2809 bfd *abfd, const Elf_Internal_Rela *rel,
2810 bfd_boolean create)
2811{
2812 struct elf_aarch64_link_hash_entry e, *ret;
2813 asection *sec = abfd->sections;
2814 hashval_t h = ELF_LOCAL_SYMBOL_HASH (sec->id,
2815 ELFNN_R_SYM (rel->r_info));
2816 void **slot;
2817
2818 e.root.indx = sec->id;
2819 e.root.dynstr_index = ELFNN_R_SYM (rel->r_info);
2820 slot = htab_find_slot_with_hash (htab->loc_hash_table, &e, h,
2821 create ? INSERT : NO_INSERT);
2822
2823 if (!slot)
2824 return NULL;
2825
2826 if (*slot)
2827 {
2828 ret = (struct elf_aarch64_link_hash_entry *) *slot;
2829 return &ret->root;
2830 }
2831
2832 ret = (struct elf_aarch64_link_hash_entry *)
2833 objalloc_alloc ((struct objalloc *) htab->loc_hash_memory,
2834 sizeof (struct elf_aarch64_link_hash_entry));
2835 if (ret)
2836 {
2837 memset (ret, 0, sizeof (*ret));
2838 ret->root.indx = sec->id;
2839 ret->root.dynstr_index = ELFNN_R_SYM (rel->r_info);
2840 ret->root.dynindx = -1;
2841 *slot = ret;
2842 }
2843 return &ret->root;
2844}
a06ea964
NC		 2845
2846/* Copy the extra info we tack onto an elf_link_hash_entry. */
2847
2848static void
cec5225b 2849elfNN_aarch64_copy_indirect_symbol (struct bfd_link_info *info,
a06ea964
NC		 2850 struct elf_link_hash_entry *dir,
2851 struct elf_link_hash_entry *ind)
2852{
cec5225b 2853 struct elf_aarch64_link_hash_entry *edir, *eind;
a06ea964 2854
cec5225b
YZ		 2855 edir = (struct elf_aarch64_link_hash_entry *) dir;
2856 eind = (struct elf_aarch64_link_hash_entry *) ind;
a06ea964
NC		 2857
2858 if (eind->dyn_relocs != NULL)
2859 {
2860 if (edir->dyn_relocs != NULL)
2861 {
2862 struct elf_dyn_relocs **pp;
2863 struct elf_dyn_relocs *p;
2864
2865 /* Add reloc counts against the indirect sym to the direct sym
2866 list. Merge any entries against the same section. */
2867 for (pp = &eind->dyn_relocs; (p = *pp) != NULL;)
2868 {
2869 struct elf_dyn_relocs *q;
2870
2871 for (q = edir->dyn_relocs; q != NULL; q = q->next)
2872 if (q->sec == p->sec)
2873 {
2874 q->pc_count += p->pc_count;
2875 q->count += p->count;
2876 *pp = p->next;
2877 break;
2878 }
2879 if (q == NULL)
2880 pp = &p->next;
2881 }
2882 *pp = edir->dyn_relocs;
2883 }
2884
2885 edir->dyn_relocs = eind->dyn_relocs;
2886 eind->dyn_relocs = NULL;
2887 }
2888
a06ea964
NC		 2889 if (ind->root.type == bfd_link_hash_indirect)
2890 {
2891 /* Copy over PLT info. */
2892 if (dir->got.refcount <= 0)
2893 {
2894 edir->got_type = eind->got_type;
2895 eind->got_type = GOT_UNKNOWN;
2896 }
2897 }
2898
2899 _bfd_elf_link_hash_copy_indirect (info, dir, ind);
2900}
2901
823710d5
SN		 2902/* Merge non-visibility st_other attributes. */
2903
2904static void
2905elfNN_aarch64_merge_symbol_attribute (struct elf_link_hash_entry *h,
2906 const Elf_Internal_Sym *isym,
2907 bfd_boolean definition ATTRIBUTE_UNUSED,
2908 bfd_boolean dynamic ATTRIBUTE_UNUSED)
2909{
2910 unsigned int isym_sto = isym->st_other & ~ELF_ST_VISIBILITY (-1);
2911 unsigned int h_sto = h->other & ~ELF_ST_VISIBILITY (-1);
2912
2913 if (isym_sto == h_sto)
2914 return;
2915
2916 if (isym_sto & ~STO_AARCH64_VARIANT_PCS)
2917 /* Not fatal, this callback cannot fail. */
2918 _bfd_error_handler (_("unknown attribute for symbol `%s': 0x%02x"),
2919 h->root.root.string, isym_sto);
2920
2921 /* Note: Ideally we would warn about any attribute mismatch, but
2922 this api does not allow that without substantial changes. */
2923 if (isym_sto & STO_AARCH64_VARIANT_PCS)
2924 h->other |= STO_AARCH64_VARIANT_PCS;
2925}
2926
68faa637
AM		 2927/* Destroy an AArch64 elf linker hash table. */
2928
2929static void
d495ab0d 2930elfNN_aarch64_link_hash_table_free (bfd *obfd)
68faa637
AM		 2931{
2932 struct elf_aarch64_link_hash_table *ret
d495ab0d 2933 = (struct elf_aarch64_link_hash_table *) obfd->link.hash;
68faa637
AM		 2934
2935 if (ret->loc_hash_table)
2936 htab_delete (ret->loc_hash_table);
2937 if (ret->loc_hash_memory)
2938 objalloc_free ((struct objalloc *) ret->loc_hash_memory);
2939
2940 bfd_hash_table_free (&ret->stub_hash_table);
d495ab0d 2941 _bfd_elf_link_hash_table_free (obfd);
68faa637
AM		 2942}
2943
a06ea964
NC		 2944/* Create an AArch64 elf linker hash table. */
2945
2946static struct bfd_link_hash_table *
cec5225b 2947elfNN_aarch64_link_hash_table_create (bfd *abfd)
a06ea964 2948{
cec5225b 2949 struct elf_aarch64_link_hash_table *ret;
986f0783 2950 size_t amt = sizeof (struct elf_aarch64_link_hash_table);
a06ea964 2951
7bf52ea2 2952 ret = bfd_zmalloc (amt);
a06ea964
NC		 2953 if (ret == NULL)
2954 return NULL;
2955
2956 if (!_bfd_elf_link_hash_table_init
cec5225b
YZ		 2957 (&ret->root, abfd, elfNN_aarch64_link_hash_newfunc,
2958 sizeof (struct elf_aarch64_link_hash_entry), AARCH64_ELF_DATA))
a06ea964
NC		 2959 {
2960 free (ret);
2961 return NULL;
2962 }
2963
a06ea964 2964 ret->plt_header_size = PLT_ENTRY_SIZE;
37c18eed 2965 ret->plt0_entry = elfNN_aarch64_small_plt0_entry;
a06ea964 2966 ret->plt_entry_size = PLT_SMALL_ENTRY_SIZE;
37c18eed
SD		 2967 ret->plt_entry = elfNN_aarch64_small_plt_entry;
2968 ret->tlsdesc_plt_entry_size = PLT_TLSDESC_ENTRY_SIZE;
a06ea964 2969 ret->obfd = abfd;
a06ea964
NC		 2970 ret->dt_tlsdesc_got = (bfd_vma) - 1;
2971
2972 if (!bfd_hash_table_init (&ret->stub_hash_table, stub_hash_newfunc,
cec5225b 2973 sizeof (struct elf_aarch64_stub_hash_entry)))
a06ea964 2974 {
d495ab0d 2975 _bfd_elf_link_hash_table_free (abfd);
a06ea964
NC		 2976 return NULL;
2977 }
2978
1419bbe5
WN		 2979 ret->loc_hash_table = htab_try_create (1024,
2980 elfNN_aarch64_local_htab_hash,
2981 elfNN_aarch64_local_htab_eq,
2982 NULL);
2983 ret->loc_hash_memory = objalloc_create ();
2984 if (!ret->loc_hash_table || !ret->loc_hash_memory)
2985 {
d495ab0d 2986 elfNN_aarch64_link_hash_table_free (abfd);
1419bbe5
WN		 2987 return NULL;
2988 }
d495ab0d 2989 ret->root.root.hash_table_free = elfNN_aarch64_link_hash_table_free;
1419bbe5 2990
a06ea964
NC		 2991 return &ret->root.root;
2992}
2993
1d75a8e2
NC		 2994/* Perform relocation R_TYPE. Returns TRUE upon success, FALSE otherwise. */
2995
a06ea964
NC		 2996static bfd_boolean
2997aarch64_relocate (unsigned int r_type, bfd *input_bfd, asection *input_section,
2998 bfd_vma offset, bfd_vma value)
2999{
3000 reloc_howto_type *howto;
3001 bfd_vma place;
3002
0aa13fee 3003 howto = elfNN_aarch64_howto_from_type (input_bfd, r_type);
a06ea964
NC		 3004 place = (input_section->output_section->vma + input_section->output_offset
3005 + offset);
caed7120 3006
0aa13fee 3007 r_type = elfNN_aarch64_bfd_reloc_from_type (input_bfd, r_type);
652afeef
TC		 3008 value = _bfd_aarch64_elf_resolve_relocation (input_bfd, r_type, place,
3009 value, 0, FALSE);
caed7120
YZ		 3010 return _bfd_aarch64_elf_put_addend (input_bfd,
3011 input_section->contents + offset, r_type,
1d75a8e2 3012 howto, value) == bfd_reloc_ok;
a06ea964
NC		 3013}
3014
cec5225b 3015static enum elf_aarch64_stub_type
a06ea964
NC		 3016aarch64_select_branch_stub (bfd_vma value, bfd_vma place)
3017{
3018 if (aarch64_valid_for_adrp_p (value, place))
3019 return aarch64_stub_adrp_branch;
3020 return aarch64_stub_long_branch;
3021}
3022
3023/* Determine the type of stub needed, if any, for a call. */
3024
cec5225b 3025static enum elf_aarch64_stub_type
9a228467 3026aarch64_type_of_stub (asection *input_sec,
a06ea964 3027 const Elf_Internal_Rela *rel,
f678ded7 3028 asection *sym_sec,
a06ea964 3029 unsigned char st_type,
a06ea964
NC		 3030 bfd_vma destination)
3031{
3032 bfd_vma location;
3033 bfd_signed_vma branch_offset;
3034 unsigned int r_type;
cec5225b 3035 enum elf_aarch64_stub_type stub_type = aarch64_stub_none;
a06ea964 3036
f678ded7 3037 if (st_type != STT_FUNC
2f340668 3038 && (sym_sec == input_sec))
a06ea964
NC		 3039 return stub_type;
3040
a06ea964
NC		 3041 /* Determine where the call point is. */
3042 location = (input_sec->output_offset
3043 + input_sec->output_section->vma + rel->r_offset);
3044
3045 branch_offset = (bfd_signed_vma) (destination - location);
3046
cec5225b 3047 r_type = ELFNN_R_TYPE (rel->r_info);
a06ea964
NC		 3048
3049 /* We don't want to redirect any old unconditional jump in this way,
3050 only one which is being used for a sibcall, where it is
3051 acceptable for the IP0 and IP1 registers to be clobbered. */
a6bb11b2 3052 if ((r_type == AARCH64_R (CALL26) || r_type == AARCH64_R (JUMP26))
a06ea964
NC		 3053 && (branch_offset > AARCH64_MAX_FWD_BRANCH_OFFSET
3054 || branch_offset < AARCH64_MAX_BWD_BRANCH_OFFSET))
3055 {
3056 stub_type = aarch64_stub_long_branch;
3057 }
3058
3059 return stub_type;
3060}
3061
3062/* Build a name for an entry in the stub hash table. */
3063
3064static char *
cec5225b 3065elfNN_aarch64_stub_name (const asection *input_section,
a06ea964 3066 const asection *sym_sec,
cec5225b 3067 const struct elf_aarch64_link_hash_entry *hash,
a06ea964
NC		 3068 const Elf_Internal_Rela *rel)
3069{
3070 char *stub_name;
3071 bfd_size_type len;
3072
3073 if (hash)
3074 {
3075 len = 8 + 1 + strlen (hash->root.root.root.string) + 1 + 16 + 1;
3076 stub_name = bfd_malloc (len);
3077 if (stub_name != NULL)
3078 snprintf (stub_name, len, "%08x_%s+%" BFD_VMA_FMT "x",
3079 (unsigned int) input_section->id,
3080 hash->root.root.root.string,
3081 rel->r_addend);
3082 }
3083 else
3084 {
3085 len = 8 + 1 + 8 + 1 + 8 + 1 + 16 + 1;
3086 stub_name = bfd_malloc (len);
3087 if (stub_name != NULL)
3088 snprintf (stub_name, len, "%08x_%x:%x+%" BFD_VMA_FMT "x",
3089 (unsigned int) input_section->id,
3090 (unsigned int) sym_sec->id,
cec5225b 3091 (unsigned int) ELFNN_R_SYM (rel->r_info),
a06ea964
NC		 3092 rel->r_addend);
3093 }
3094
3095 return stub_name;
3096}
3097
7f784814
JW		 3098/* Return TRUE if symbol H should be hashed in the `.gnu.hash' section. For
3099 executable PLT slots where the executable never takes the address of those
3100 functions, the function symbols are not added to the hash table. */
3101
3102static bfd_boolean
3103elf_aarch64_hash_symbol (struct elf_link_hash_entry *h)
3104{
3105 if (h->plt.offset != (bfd_vma) -1
3106 && !h->def_regular
3107 && !h->pointer_equality_needed)
3108 return FALSE;
3109
3110 return _bfd_elf_hash_symbol (h);
3111}
3112
3113
a06ea964
NC		 3114/* Look up an entry in the stub hash. Stub entries are cached because
3115 creating the stub name takes a bit of time. */
3116
cec5225b
YZ		 3117static struct elf_aarch64_stub_hash_entry *
3118elfNN_aarch64_get_stub_entry (const asection *input_section,
a06ea964
NC		 3119 const asection *sym_sec,
3120 struct elf_link_hash_entry *hash,
3121 const Elf_Internal_Rela *rel,
cec5225b 3122 struct elf_aarch64_link_hash_table *htab)
a06ea964 3123{
cec5225b
YZ		 3124 struct elf_aarch64_stub_hash_entry *stub_entry;
3125 struct elf_aarch64_link_hash_entry *h =
3126 (struct elf_aarch64_link_hash_entry *) hash;
a06ea964
NC		 3127 const asection *id_sec;
3128
3129 if ((input_section->flags & SEC_CODE) == 0)
3130 return NULL;
3131
3132 /* If this input section is part of a group of sections sharing one
3133 stub section, then use the id of the first section in the group.
3134 Stub names need to include a section id, as there may well be
3135 more than one stub used to reach say, printf, and we need to
3136 distinguish between them. */
3137 id_sec = htab->stub_group[input_section->id].link_sec;
3138
3139 if (h != NULL && h->stub_cache != NULL
3140 && h->stub_cache->h == h && h->stub_cache->id_sec == id_sec)
3141 {
3142 stub_entry = h->stub_cache;
3143 }
3144 else
3145 {
3146 char *stub_name;
3147
cec5225b 3148 stub_name = elfNN_aarch64_stub_name (id_sec, sym_sec, h, rel);
a06ea964
NC		 3149 if (stub_name == NULL)
3150 return NULL;
3151
3152 stub_entry = aarch64_stub_hash_lookup (&htab->stub_hash_table,
3153 stub_name, FALSE, FALSE);
3154 if (h != NULL)
3155 h->stub_cache = stub_entry;
3156
3157 free (stub_name);
3158 }
3159
3160 return stub_entry;
3161}
3162
a06ea964 3163
66585675
MS		 3164/* Create a stub section. */
3165
3166static asection *
3167_bfd_aarch64_create_stub_section (asection *section,
3168 struct elf_aarch64_link_hash_table *htab)
3169{
3170 size_t namelen;
3171 bfd_size_type len;
3172 char *s_name;
3173
3174 namelen = strlen (section->name);
3175 len = namelen + sizeof (STUB_SUFFIX);
3176 s_name = bfd_alloc (htab->stub_bfd, len);
3177 if (s_name == NULL)
3178 return NULL;
3179
3180 memcpy (s_name, section->name, namelen);
3181 memcpy (s_name + namelen, STUB_SUFFIX, sizeof (STUB_SUFFIX));
3182 return (*htab->add_stub_section) (s_name, section);
3183}
3184
3185
fc6d53be
MS		 3186/* Find or create a stub section for a link section.
3187
3188 Fix or create the stub section used to collect stubs attached to
3189 the specified link section. */
3190
3191static asection *
3192_bfd_aarch64_get_stub_for_link_section (asection *link_section,
3193 struct elf_aarch64_link_hash_table *htab)
3194{
3195 if (htab->stub_group[link_section->id].stub_sec == NULL)
3196 htab->stub_group[link_section->id].stub_sec
3197 = _bfd_aarch64_create_stub_section (link_section, htab);
3198 return htab->stub_group[link_section->id].stub_sec;
3199}
3200
3201
ef857521
MS		 3202/* Find or create a stub section in the stub group for an input
3203 section. */
3204
3205static asection *
3206_bfd_aarch64_create_or_find_stub_sec (asection *section,
3207 struct elf_aarch64_link_hash_table *htab)
a06ea964 3208{
fc6d53be
MS		 3209 asection *link_sec = htab->stub_group[section->id].link_sec;
3210 return _bfd_aarch64_get_stub_for_link_section (link_sec, htab);
ef857521
MS		 3211}
3212
3213
3214/* Add a new stub entry in the stub group associated with an input
3215 section to the stub hash. Not all fields of the new stub entry are
3216 initialised. */
3217
3218static struct elf_aarch64_stub_hash_entry *
3219_bfd_aarch64_add_stub_entry_in_group (const char *stub_name,
3220 asection *section,
3221 struct elf_aarch64_link_hash_table *htab)
3222{
3223 asection *link_sec;
3224 asection *stub_sec;
3225 struct elf_aarch64_stub_hash_entry *stub_entry;
3226
3227 link_sec = htab->stub_group[section->id].link_sec;
3228 stub_sec = _bfd_aarch64_create_or_find_stub_sec (section, htab);
3229
a06ea964
NC		 3230 /* Enter this entry into the linker stub hash table. */
3231 stub_entry = aarch64_stub_hash_lookup (&htab->stub_hash_table, stub_name,
3232 TRUE, FALSE);
3233 if (stub_entry == NULL)
3234 {
695344c0 3235 /* xgettext:c-format */
871b3ab2 3236 _bfd_error_handler (_("%pB: cannot create stub entry %s"),
4eca0228 3237 section->owner, stub_name);
a06ea964
NC		 3238 return NULL;
3239 }
3240
3241 stub_entry->stub_sec = stub_sec;
3242 stub_entry->stub_offset = 0;
3243 stub_entry->id_sec = link_sec;
3244
3245 return stub_entry;
3246}
3247
4106101c
MS		 3248/* Add a new stub entry in the final stub section to the stub hash.
3249 Not all fields of the new stub entry are initialised. */
3250
3251static struct elf_aarch64_stub_hash_entry *
3252_bfd_aarch64_add_stub_entry_after (const char *stub_name,
3253 asection *link_section,
3254 struct elf_aarch64_link_hash_table *htab)
3255{
3256 asection *stub_sec;
3257 struct elf_aarch64_stub_hash_entry *stub_entry;
3258
739b5c9c
TC		 3259 stub_sec = NULL;
3260 /* Only create the actual stub if we will end up needing it. */
3261 if (htab->fix_erratum_843419 & ERRAT_ADRP)
3262 stub_sec = _bfd_aarch64_get_stub_for_link_section (link_section, htab);
4106101c
MS		 3263 stub_entry = aarch64_stub_hash_lookup (&htab->stub_hash_table, stub_name,
3264 TRUE, FALSE);
3265 if (stub_entry == NULL)
3266 {
4eca0228 3267 _bfd_error_handler (_("cannot create stub entry %s"), stub_name);
4106101c
MS		 3268 return NULL;
3269 }
3270
3271 stub_entry->stub_sec = stub_sec;
3272 stub_entry->stub_offset = 0;
3273 stub_entry->id_sec = link_section;
3274
3275 return stub_entry;
3276}
3277
3278
a06ea964
NC		 3279static bfd_boolean
3280aarch64_build_one_stub (struct bfd_hash_entry *gen_entry,
abf874aa 3281 void *in_arg)
a06ea964 3282{
cec5225b 3283 struct elf_aarch64_stub_hash_entry *stub_entry;
a06ea964
NC		 3284 asection *stub_sec;
3285 bfd *stub_bfd;
3286 bfd_byte *loc;
3287 bfd_vma sym_value;
68fcca92
JW		 3288 bfd_vma veneered_insn_loc;
3289 bfd_vma veneer_entry_loc;
3290 bfd_signed_vma branch_offset = 0;
a06ea964
NC		 3291 unsigned int template_size;
3292 const uint32_t *template;
3293 unsigned int i;
abf874aa 3294 struct bfd_link_info *info;
a06ea964
NC		 3295
3296 /* Massage our args to the form they really have. */
cec5225b 3297 stub_entry = (struct elf_aarch64_stub_hash_entry *) gen_entry;
a06ea964 3298
abf874aa
CL		 3299 info = (struct bfd_link_info *) in_arg;
3300
3301 /* Fail if the target section could not be assigned to an output
3302 section. The user should fix his linker script. */
3303 if (stub_entry->target_section->output_section == NULL
3304 && info->non_contiguous_regions)
53215f21
CL		 3305 info->callbacks->einfo (_("%F%P: Could not assign '%pA' to an output section. "
3306 "Retry without "
3307 "--enable-non-contiguous-regions.\n"),
3308 stub_entry->target_section);
abf874aa 3309
a06ea964
NC		 3310 stub_sec = stub_entry->stub_sec;
3311
3312 /* Make a note of the offset within the stubs for this entry. */
3313 stub_entry->stub_offset = stub_sec->size;
3314 loc = stub_sec->contents + stub_entry->stub_offset;
3315
3316 stub_bfd = stub_sec->owner;
3317
3318 /* This is the address of the stub destination. */
3319 sym_value = (stub_entry->target_value
3320 + stub_entry->target_section->output_offset
3321 + stub_entry->target_section->output_section->vma);
3322
3323 if (stub_entry->stub_type == aarch64_stub_long_branch)
3324 {
3325 bfd_vma place = (stub_entry->stub_offset + stub_sec->output_section->vma
3326 + stub_sec->output_offset);
3327
3328 /* See if we can relax the stub. */
3329 if (aarch64_valid_for_adrp_p (sym_value, place))
3330 stub_entry->stub_type = aarch64_select_branch_stub (sym_value, place);
3331 }
3332
3333 switch (stub_entry->stub_type)
3334 {
3335 case aarch64_stub_adrp_branch:
3336 template = aarch64_adrp_branch_stub;
3337 template_size = sizeof (aarch64_adrp_branch_stub);
3338 break;
3339 case aarch64_stub_long_branch:
3340 template = aarch64_long_branch_stub;
3341 template_size = sizeof (aarch64_long_branch_stub);
3342 break;
68fcca92
JW		 3343 case aarch64_stub_erratum_835769_veneer:
3344 template = aarch64_erratum_835769_stub;
3345 template_size = sizeof (aarch64_erratum_835769_stub);
3346 break;
4106101c
MS		 3347 case aarch64_stub_erratum_843419_veneer:
3348 template = aarch64_erratum_843419_stub;
3349 template_size = sizeof (aarch64_erratum_843419_stub);
3350 break;
a06ea964 3351 default:
8e2fe09f 3352 abort ();
a06ea964
NC		 3353 }
3354
3355 for (i = 0; i < (template_size / sizeof template[0]); i++)
3356 {
3357 bfd_putl32 (template[i], loc);
3358 loc += 4;
3359 }
3360
3361 template_size = (template_size + 7) & ~7;
3362 stub_sec->size += template_size;
3363
3364 switch (stub_entry->stub_type)
3365 {
3366 case aarch64_stub_adrp_branch:
1d75a8e2
NC		 3367 if (!aarch64_relocate (AARCH64_R (ADR_PREL_PG_HI21), stub_bfd, stub_sec,
3368 stub_entry->stub_offset, sym_value))
a06ea964
NC		 3369 /* The stub would not have been relaxed if the offset was out
3370 of range. */
3371 BFD_FAIL ();
3372
1d75a8e2
NC		 3373 if (!aarch64_relocate (AARCH64_R (ADD_ABS_LO12_NC), stub_bfd, stub_sec,
3374 stub_entry->stub_offset + 4, sym_value))
93ca8569 3375 BFD_FAIL ();
a06ea964
NC		 3376 break;
3377
3378 case aarch64_stub_long_branch:
3379 /* We want the value relative to the address 12 bytes back from the
07d6d2b8 3380 value itself. */
1d75a8e2
NC		 3381 if (!aarch64_relocate (AARCH64_R (PRELNN), stub_bfd, stub_sec,
3382 stub_entry->stub_offset + 16, sym_value + 12))
93ca8569 3383 BFD_FAIL ();
a06ea964 3384 break;
68fcca92
JW		 3385
3386 case aarch64_stub_erratum_835769_veneer:
3387 veneered_insn_loc = stub_entry->target_section->output_section->vma
3388 + stub_entry->target_section->output_offset
3389 + stub_entry->target_value;
3390 veneer_entry_loc = stub_entry->stub_sec->output_section->vma
3391 + stub_entry->stub_sec->output_offset
3392 + stub_entry->stub_offset;
3393 branch_offset = veneered_insn_loc - veneer_entry_loc;
3394 branch_offset >>= 2;
3395 branch_offset &= 0x3ffffff;
3396 bfd_putl32 (stub_entry->veneered_insn,
3397 stub_sec->contents + stub_entry->stub_offset);
3398 bfd_putl32 (template[1] | branch_offset,
3399 stub_sec->contents + stub_entry->stub_offset + 4);
3400 break;
3401
4106101c 3402 case aarch64_stub_erratum_843419_veneer:
1d75a8e2
NC		 3403 if (!aarch64_relocate (AARCH64_R (JUMP26), stub_bfd, stub_sec,
3404 stub_entry->stub_offset + 4, sym_value + 4))
4106101c
MS		 3405 BFD_FAIL ();
3406 break;
3407
a06ea964 3408 default:
8e2fe09f 3409 abort ();
a06ea964
NC		 3410 }
3411
3412 return TRUE;
3413}
3414
3415/* As above, but don't actually build the stub. Just bump offset so
3416 we know stub section sizes. */
3417
3418static bfd_boolean
739b5c9c 3419aarch64_size_one_stub (struct bfd_hash_entry *gen_entry, void *in_arg)
a06ea964 3420{
cec5225b 3421 struct elf_aarch64_stub_hash_entry *stub_entry;
739b5c9c 3422 struct elf_aarch64_link_hash_table *htab;
a06ea964
NC		 3423 int size;
3424
3425 /* Massage our args to the form they really have. */
cec5225b 3426 stub_entry = (struct elf_aarch64_stub_hash_entry *) gen_entry;
739b5c9c 3427 htab = (struct elf_aarch64_link_hash_table *) in_arg;
a06ea964
NC		 3428
3429 switch (stub_entry->stub_type)
3430 {
3431 case aarch64_stub_adrp_branch:
3432 size = sizeof (aarch64_adrp_branch_stub);
3433 break;
3434 case aarch64_stub_long_branch:
3435 size = sizeof (aarch64_long_branch_stub);
3436 break;
68fcca92
JW		 3437 case aarch64_stub_erratum_835769_veneer:
3438 size = sizeof (aarch64_erratum_835769_stub);
3439 break;
4106101c 3440 case aarch64_stub_erratum_843419_veneer:
739b5c9c
TC		 3441 {
3442 if (htab->fix_erratum_843419 == ERRAT_ADR)
3443 return TRUE;
3444 size = sizeof (aarch64_erratum_843419_stub);
3445 }
4106101c 3446 break;
a06ea964 3447 default:
8e2fe09f 3448 abort ();
a06ea964
NC		 3449 }
3450
3451 size = (size + 7) & ~7;
3452 stub_entry->stub_sec->size += size;
3453 return TRUE;
3454}
3455
3456/* External entry points for sizing and building linker stubs. */
3457
3458/* Set up various things so that we can make a list of input sections
3459 for each output section included in the link. Returns -1 on error,
3460 0 when no stubs will be needed, and 1 on success. */
3461
3462int
cec5225b 3463elfNN_aarch64_setup_section_lists (bfd *output_bfd,
a06ea964
NC		 3464 struct bfd_link_info *info)
3465{
3466 bfd *input_bfd;
3467 unsigned int bfd_count;
7292b3ac 3468 unsigned int top_id, top_index;
a06ea964
NC		 3469 asection *section;
3470 asection **input_list, **list;
986f0783 3471 size_t amt;
cec5225b
YZ		 3472 struct elf_aarch64_link_hash_table *htab =
3473 elf_aarch64_hash_table (info);
a06ea964
NC		 3474
3475 if (!is_elf_hash_table (htab))
3476 return 0;
3477
3478 /* Count the number of input BFDs and find the top input section id. */
3479 for (input_bfd = info->input_bfds, bfd_count = 0, top_id = 0;
c72f2fb2 3480 input_bfd != NULL; input_bfd = input_bfd->link.next)
a06ea964
NC		 3481 {
3482 bfd_count += 1;
3483 for (section = input_bfd->sections;
3484 section != NULL; section = section->next)
3485 {
3486 if (top_id < section->id)
3487 top_id = section->id;
3488 }
3489 }
3490 htab->bfd_count = bfd_count;
3491
3492 amt = sizeof (struct map_stub) * (top_id + 1);
3493 htab->stub_group = bfd_zmalloc (amt);
3494 if (htab->stub_group == NULL)
3495 return -1;
3496
3497 /* We can't use output_bfd->section_count here to find the top output
3498 section index as some sections may have been removed, and
3499 _bfd_strip_section_from_output doesn't renumber the indices. */
3500 for (section = output_bfd->sections, top_index = 0;
3501 section != NULL; section = section->next)
3502 {
3503 if (top_index < section->index)
3504 top_index = section->index;
3505 }
3506
3507 htab->top_index = top_index;
3508 amt = sizeof (asection *) * (top_index + 1);
3509 input_list = bfd_malloc (amt);
3510 htab->input_list = input_list;
3511 if (input_list == NULL)
3512 return -1;
3513
3514 /* For sections we aren't interested in, mark their entries with a
3515 value we can check later. */
3516 list = input_list + top_index;
3517 do
3518 *list = bfd_abs_section_ptr;
3519 while (list-- != input_list);
3520
3521 for (section = output_bfd->sections;
3522 section != NULL; section = section->next)
3523 {
3524 if ((section->flags & SEC_CODE) != 0)
3525 input_list[section->index] = NULL;
3526 }
3527
3528 return 1;
3529}
3530
cec5225b 3531/* Used by elfNN_aarch64_next_input_section and group_sections. */
a06ea964
NC		 3532#define PREV_SEC(sec) (htab->stub_group[(sec)->id].link_sec)
3533
3534/* The linker repeatedly calls this function for each input section,
3535 in the order that input sections are linked into output sections.
3536 Build lists of input sections to determine groupings between which
3537 we may insert linker stubs. */
3538
3539void
cec5225b 3540elfNN_aarch64_next_input_section (struct bfd_link_info *info, asection *isec)
a06ea964 3541{
cec5225b
YZ		 3542 struct elf_aarch64_link_hash_table *htab =
3543 elf_aarch64_hash_table (info);
a06ea964
NC		 3544
3545 if (isec->output_section->index <= htab->top_index)
3546 {
3547 asection **list = htab->input_list + isec->output_section->index;
3548
cff69cf4 3549 if (*list != bfd_abs_section_ptr && (isec->flags & SEC_CODE) != 0)
a06ea964
NC		 3550 {
3551 /* Steal the link_sec pointer for our list. */
3552 /* This happens to make the list in reverse order,
3553 which is what we want. */
3554 PREV_SEC (isec) = *list;
3555 *list = isec;
3556 }
3557 }
3558}
3559
3560/* See whether we can group stub sections together. Grouping stub
3561 sections may result in fewer stubs. More importantly, we need to
3562 put all .init* and .fini* stubs at the beginning of the .init or
3563 .fini output sections respectively, because glibc splits the
3564 _init and _fini functions into multiple parts. Putting a stub in
3565 the middle of a function is not a good idea. */
3566
3567static void
cec5225b 3568group_sections (struct elf_aarch64_link_hash_table *htab,
a06ea964 3569 bfd_size_type stub_group_size,
cff69cf4 3570 bfd_boolean stubs_always_after_branch)
a06ea964 3571{
cff69cf4 3572 asection **list = htab->input_list;
a06ea964
NC		 3573
3574 do
3575 {
3576 asection *tail = *list;
cff69cf4 3577 asection *head;
a06ea964
NC		 3578
3579 if (tail == bfd_abs_section_ptr)
3580 continue;
3581
cff69cf4
WD		 3582 /* Reverse the list: we must avoid placing stubs at the
3583 beginning of the section because the beginning of the text
3584 section may be required for an interrupt vector in bare metal
3585 code. */
3586#define NEXT_SEC PREV_SEC
3587 head = NULL;
a06ea964 3588 while (tail != NULL)
cff69cf4
WD		 3589 {
3590 /* Pop from tail. */
3591 asection *item = tail;
3592 tail = PREV_SEC (item);
3593
3594 /* Push on head. */
3595 NEXT_SEC (item) = head;
3596 head = item;
3597 }
3598
3599 while (head != NULL)
a06ea964
NC		 3600 {
3601 asection *curr;
cff69cf4
WD		 3602 asection *next;
3603 bfd_vma stub_group_start = head->output_offset;
3604 bfd_vma end_of_next;
a06ea964 3605
cff69cf4
WD		 3606 curr = head;
3607 while (NEXT_SEC (curr) != NULL)
3608 {
3609 next = NEXT_SEC (curr);
3610 end_of_next = next->output_offset + next->size;
3611 if (end_of_next - stub_group_start >= stub_group_size)
3612 /* End of NEXT is too far from start, so stop. */
3613 break;
3614 /* Add NEXT to the group. */
3615 curr = next;
3616 }
a06ea964 3617
cff69cf4 3618 /* OK, the size from the start to the start of CURR is less
a06ea964 3619 than stub_group_size and thus can be handled by one stub
cff69cf4 3620 section. (Or the head section is itself larger than
a06ea964
NC		 3621 stub_group_size, in which case we may be toast.)
3622 We should really be keeping track of the total size of
3623 stubs added here, as stubs contribute to the final output
3624 section size. */
3625 do
3626 {
cff69cf4 3627 next = NEXT_SEC (head);
a06ea964 3628 /* Set up this stub group. */
cff69cf4 3629 htab->stub_group[head->id].link_sec = curr;
a06ea964 3630 }
cff69cf4 3631 while (head != curr && (head = next) != NULL);
a06ea964
NC		 3632
3633 /* But wait, there's more! Input sections up to stub_group_size
cff69cf4
WD		 3634 bytes after the stub section can be handled by it too. */
3635 if (!stubs_always_after_branch)
a06ea964 3636 {
cff69cf4
WD		 3637 stub_group_start = curr->output_offset + curr->size;
3638
3639 while (next != NULL)
a06ea964 3640 {
cff69cf4
WD		 3641 end_of_next = next->output_offset + next->size;
3642 if (end_of_next - stub_group_start >= stub_group_size)
3643 /* End of NEXT is too far from stubs, so stop. */
3644 break;
3645 /* Add NEXT to the stub group. */
3646 head = next;
3647 next = NEXT_SEC (head);
3648 htab->stub_group[head->id].link_sec = curr;
a06ea964
NC		 3649 }
3650 }
cff69cf4 3651 head = next;
a06ea964
NC		 3652 }
3653 }
cff69cf4 3654 while (list++ != htab->input_list + htab->top_index);
a06ea964
NC		 3655
3656 free (htab->input_list);
3657}
3658
cff69cf4 3659#undef PREV_SEC
a06ea964
NC		 3660#undef PREV_SEC
3661
68fcca92
JW		 3662#define AARCH64_BITS(x, pos, n) (((x) >> (pos)) & ((1 << (n)) - 1))
3663
3664#define AARCH64_RT(insn) AARCH64_BITS (insn, 0, 5)
3665#define AARCH64_RT2(insn) AARCH64_BITS (insn, 10, 5)
3666#define AARCH64_RA(insn) AARCH64_BITS (insn, 10, 5)
3667#define AARCH64_RD(insn) AARCH64_BITS (insn, 0, 5)
3668#define AARCH64_RN(insn) AARCH64_BITS (insn, 5, 5)
3669#define AARCH64_RM(insn) AARCH64_BITS (insn, 16, 5)
3670
3671#define AARCH64_MAC(insn) (((insn) & 0xff000000) == 0x9b000000)
3672#define AARCH64_BIT(insn, n) AARCH64_BITS (insn, n, 1)
3673#define AARCH64_OP31(insn) AARCH64_BITS (insn, 21, 3)
3674#define AARCH64_ZR 0x1f
3675
3676/* All ld/st ops. See C4-182 of the ARM ARM. The encoding space for
3677 LD_PCREL, LDST_RO, LDST_UI and LDST_UIMM cover prefetch ops. */
3678
3679#define AARCH64_LD(insn) (AARCH64_BIT (insn, 22) == 1)
3680#define AARCH64_LDST(insn) (((insn) & 0x0a000000) == 0x08000000)
3681#define AARCH64_LDST_EX(insn) (((insn) & 0x3f000000) == 0x08000000)
3682#define AARCH64_LDST_PCREL(insn) (((insn) & 0x3b000000) == 0x18000000)
3683#define AARCH64_LDST_NAP(insn) (((insn) & 0x3b800000) == 0x28000000)
3684#define AARCH64_LDSTP_PI(insn) (((insn) & 0x3b800000) == 0x28800000)
3685#define AARCH64_LDSTP_O(insn) (((insn) & 0x3b800000) == 0x29000000)
3686#define AARCH64_LDSTP_PRE(insn) (((insn) & 0x3b800000) == 0x29800000)
3687#define AARCH64_LDST_UI(insn) (((insn) & 0x3b200c00) == 0x38000000)
3688#define AARCH64_LDST_PIIMM(insn) (((insn) & 0x3b200c00) == 0x38000400)
3689#define AARCH64_LDST_U(insn) (((insn) & 0x3b200c00) == 0x38000800)
3690#define AARCH64_LDST_PREIMM(insn) (((insn) & 0x3b200c00) == 0x38000c00)
3691#define AARCH64_LDST_RO(insn) (((insn) & 0x3b200c00) == 0x38200800)
3692#define AARCH64_LDST_UIMM(insn) (((insn) & 0x3b000000) == 0x39000000)
3693#define AARCH64_LDST_SIMD_M(insn) (((insn) & 0xbfbf0000) == 0x0c000000)
3694#define AARCH64_LDST_SIMD_M_PI(insn) (((insn) & 0xbfa00000) == 0x0c800000)
3695#define AARCH64_LDST_SIMD_S(insn) (((insn) & 0xbf9f0000) == 0x0d000000)
3696#define AARCH64_LDST_SIMD_S_PI(insn) (((insn) & 0xbf800000) == 0x0d800000)
3697
3d14faea
MS		 3698/* Classify an INSN if it is indeed a load/store.
3699
3700 Return TRUE if INSN is a LD/ST instruction otherwise return FALSE.
3701
3702 For scalar LD/ST instructions PAIR is FALSE, RT is returned and RT2
3703 is set equal to RT.
3704
2d0ca824 3705 For LD/ST pair instructions PAIR is TRUE, RT and RT2 are returned. */
68fcca92
JW		 3706
3707static bfd_boolean
3d14faea 3708aarch64_mem_op_p (uint32_t insn, unsigned int *rt, unsigned int *rt2,
68fcca92
JW		 3709 bfd_boolean *pair, bfd_boolean *load)
3710{
3711 uint32_t opcode;
3712 unsigned int r;
3713 uint32_t opc = 0;
3714 uint32_t v = 0;
3715 uint32_t opc_v = 0;
3716
de194d85 3717 /* Bail out quickly if INSN doesn't fall into the load-store
68fcca92
JW		 3718 encoding space. */
3719 if (!AARCH64_LDST (insn))
3720 return FALSE;
3721
3722 *pair = FALSE;
3723 *load = FALSE;
3724 if (AARCH64_LDST_EX (insn))
3725 {
3726 *rt = AARCH64_RT (insn);
3d14faea 3727 *rt2 = *rt;
68fcca92 3728 if (AARCH64_BIT (insn, 21) == 1)
07d6d2b8 3729 {
68fcca92 3730 *pair = TRUE;
3d14faea 3731 *rt2 = AARCH64_RT2 (insn);
68fcca92
JW		 3732 }
3733 *load = AARCH64_LD (insn);
3734 return TRUE;
3735 }
3736 else if (AARCH64_LDST_NAP (insn)
3737 || AARCH64_LDSTP_PI (insn)
3738 || AARCH64_LDSTP_O (insn)
3739 || AARCH64_LDSTP_PRE (insn))
3740 {
3741 *pair = TRUE;
3742 *rt = AARCH64_RT (insn);
3d14faea 3743 *rt2 = AARCH64_RT2 (insn);
68fcca92
JW		 3744 *load = AARCH64_LD (insn);
3745 return TRUE;
3746 }
3747 else if (AARCH64_LDST_PCREL (insn)
3748 || AARCH64_LDST_UI (insn)
3749 || AARCH64_LDST_PIIMM (insn)
3750 || AARCH64_LDST_U (insn)
3751 || AARCH64_LDST_PREIMM (insn)
3752 || AARCH64_LDST_RO (insn)
3753 || AARCH64_LDST_UIMM (insn))
3754 {
3755 *rt = AARCH64_RT (insn);
3d14faea 3756 *rt2 = *rt;
68fcca92
JW		 3757 if (AARCH64_LDST_PCREL (insn))
3758 *load = TRUE;
3759 opc = AARCH64_BITS (insn, 22, 2);
3760 v = AARCH64_BIT (insn, 26);
3761 opc_v = opc | (v << 2);
3762 *load = (opc_v == 1 || opc_v == 2 || opc_v == 3
3763 || opc_v == 5 || opc_v == 7);
3764 return TRUE;
3765 }
3766 else if (AARCH64_LDST_SIMD_M (insn)
3767 || AARCH64_LDST_SIMD_M_PI (insn))
3768 {
3769 *rt = AARCH64_RT (insn);
3770 *load = AARCH64_BIT (insn, 22);
3771 opcode = (insn >> 12) & 0xf;
3772 switch (opcode)
3773 {
3774 case 0:
3775 case 2:
3d14faea 3776 *rt2 = *rt + 3;
68fcca92
JW		 3777 break;
3778
3779 case 4:
3780 case 6:
3d14faea 3781 *rt2 = *rt + 2;
68fcca92
JW		 3782 break;
3783
3784 case 7:
3d14faea 3785 *rt2 = *rt;
68fcca92
JW		 3786 break;
3787
3788 case 8:
3789 case 10:
3d14faea 3790 *rt2 = *rt + 1;
68fcca92
JW		 3791 break;
3792
3793 default:
3794 return FALSE;
3795 }
3796 return TRUE;
3797 }
3798 else if (AARCH64_LDST_SIMD_S (insn)
3799 || AARCH64_LDST_SIMD_S_PI (insn))
3800 {
3801 *rt = AARCH64_RT (insn);
3802 r = (insn >> 21) & 1;
3803 *load = AARCH64_BIT (insn, 22);
3804 opcode = (insn >> 13) & 0x7;
3805 switch (opcode)
3806 {
3807 case 0:
3808 case 2:
3809 case 4:
3d14faea 3810 *rt2 = *rt + r;
68fcca92
JW		 3811 break;
3812
3813 case 1:
3814 case 3:
3815 case 5:
3d14faea 3816 *rt2 = *rt + (r == 0 ? 2 : 3);
68fcca92
JW		 3817 break;
3818
3819 case 6:
3d14faea 3820 *rt2 = *rt + r;
68fcca92
JW		 3821 break;
3822
3823 case 7:
3d14faea 3824 *rt2 = *rt + (r == 0 ? 2 : 3);
68fcca92
JW		 3825 break;
3826
3827 default:
3828 return FALSE;
3829 }
3830 return TRUE;
3831 }
3832
3833 return FALSE;
3834}
3835
3836/* Return TRUE if INSN is multiply-accumulate. */
3837
3838static bfd_boolean
3839aarch64_mlxl_p (uint32_t insn)
3840{
3841 uint32_t op31 = AARCH64_OP31 (insn);
3842
3843 if (AARCH64_MAC (insn)
3844 && (op31 == 0 || op31 == 1 || op31 == 5)
3845 /* Exclude MUL instructions which are encoded as a multiple accumulate
3846 with RA = XZR. */
3847 && AARCH64_RA (insn) != AARCH64_ZR)
3848 return TRUE;
3849
3850 return FALSE;
3851}
3852
3853/* Some early revisions of the Cortex-A53 have an erratum (835769) whereby
3854 it is possible for a 64-bit multiply-accumulate instruction to generate an
3855 incorrect result. The details are quite complex and hard to
3856 determine statically, since branches in the code may exist in some
3857 circumstances, but all cases end with a memory (load, store, or
3858 prefetch) instruction followed immediately by the multiply-accumulate
3859 operation. We employ a linker patching technique, by moving the potentially
3860 affected multiply-accumulate instruction into a patch region and replacing
3861 the original instruction with a branch to the patch. This function checks
3862 if INSN_1 is the memory operation followed by a multiply-accumulate
3863 operation (INSN_2). Return TRUE if an erratum sequence is found, FALSE
3864 if INSN_1 and INSN_2 are safe. */
3865
3866static bfd_boolean
3867aarch64_erratum_sequence (uint32_t insn_1, uint32_t insn_2)
3868{
3869 uint32_t rt;
3d14faea 3870 uint32_t rt2;
68fcca92
JW		 3871 uint32_t rn;
3872 uint32_t rm;
3873 uint32_t ra;
3874 bfd_boolean pair;
3875 bfd_boolean load;
3876
3877 if (aarch64_mlxl_p (insn_2)
3d14faea 3878 && aarch64_mem_op_p (insn_1, &rt, &rt2, &pair, &load))
68fcca92
JW		 3879 {
3880 /* Any SIMD memory op is independent of the subsequent MLA
3881 by definition of the erratum. */
3882 if (AARCH64_BIT (insn_1, 26))
3883 return TRUE;
3884
3885 /* If not SIMD, check for integer memory ops and MLA relationship. */
3886 rn = AARCH64_RN (insn_2);
3887 ra = AARCH64_RA (insn_2);
3888 rm = AARCH64_RM (insn_2);
3889
3890 /* If this is a load and there's a true(RAW) dependency, we are safe
3891 and this is not an erratum sequence. */
3892 if (load &&
3893 (rt == rn || rt == rm || rt == ra
3d14faea 3894 || (pair && (rt2 == rn || rt2 == rm || rt2 == ra))))
68fcca92
JW		 3895 return FALSE;
3896
3897 /* We conservatively put out stubs for all other cases (including
3898 writebacks). */
3899 return TRUE;
3900 }
3901
3902 return FALSE;
3903}
3904
520c7b56
JW		 3905/* Used to order a list of mapping symbols by address. */
3906
3907static int
3908elf_aarch64_compare_mapping (const void *a, const void *b)
3909{
3910 const elf_aarch64_section_map *amap = (const elf_aarch64_section_map *) a;
3911 const elf_aarch64_section_map *bmap = (const elf_aarch64_section_map *) b;
3912
3913 if (amap->vma > bmap->vma)
3914 return 1;
3915 else if (amap->vma < bmap->vma)
3916 return -1;
3917 else if (amap->type > bmap->type)
3918 /* Ensure results do not depend on the host qsort for objects with
3919 multiple mapping symbols at the same address by sorting on type
3920 after vma. */
3921 return 1;
3922 else if (amap->type < bmap->type)
3923 return -1;
3924 else
3925 return 0;
3926}
3927
2144188d 3928
35fee8b7
MS		 3929static char *
3930_bfd_aarch64_erratum_835769_stub_name (unsigned num_fixes)
3931{
3932 char *stub_name = (char *) bfd_malloc
3933 (strlen ("__erratum_835769_veneer_") + 16);
bb69498c
NC		 3934 if (stub_name != NULL)
3935 sprintf (stub_name,"__erratum_835769_veneer_%d", num_fixes);
35fee8b7
MS		 3936 return stub_name;
3937}
3938
4106101c 3939/* Scan for Cortex-A53 erratum 835769 sequence.
2144188d
MS		 3940
3941 Return TRUE else FALSE on abnormal termination. */
3942
68fcca92 3943static bfd_boolean
5421cc6e
MS		 3944_bfd_aarch64_erratum_835769_scan (bfd *input_bfd,
3945 struct bfd_link_info *info,
3946 unsigned int *num_fixes_p)
68fcca92
JW		 3947{
3948 asection *section;
3949 struct elf_aarch64_link_hash_table *htab = elf_aarch64_hash_table (info);
68fcca92 3950 unsigned int num_fixes = *num_fixes_p;
68fcca92
JW		 3951
3952 if (htab == NULL)
2144188d 3953 return TRUE;
68fcca92
JW		 3954
3955 for (section = input_bfd->sections;
3956 section != NULL;
3957 section = section->next)
3958 {
3959 bfd_byte *contents = NULL;
3960 struct _aarch64_elf_section_data *sec_data;
3961 unsigned int span;
3962
3963 if (elf_section_type (section) != SHT_PROGBITS
3964 || (elf_section_flags (section) & SHF_EXECINSTR) == 0
3965 || (section->flags & SEC_EXCLUDE) != 0
3966 || (section->sec_info_type == SEC_INFO_TYPE_JUST_SYMS)
3967 || (section->output_section == bfd_abs_section_ptr))
3968 continue;
3969
3970 if (elf_section_data (section)->this_hdr.contents != NULL)
3971 contents = elf_section_data (section)->this_hdr.contents;
3972 else if (! bfd_malloc_and_get_section (input_bfd, section, &contents))
2144188d 3973 return FALSE;
68fcca92
JW		 3974
3975 sec_data = elf_aarch64_section_data (section);
520c7b56
JW		 3976
3977 qsort (sec_data->map, sec_data->mapcount,
3978 sizeof (elf_aarch64_section_map), elf_aarch64_compare_mapping);
3979
68fcca92
JW		 3980 for (span = 0; span < sec_data->mapcount; span++)
3981 {
3982 unsigned int span_start = sec_data->map[span].vma;
3983 unsigned int span_end = ((span == sec_data->mapcount - 1)
3984 ? sec_data->map[0].vma + section->size
3985 : sec_data->map[span + 1].vma);
3986 unsigned int i;
3987 char span_type = sec_data->map[span].type;
3988
3989 if (span_type == 'd')
3990 continue;
3991
3992 for (i = span_start; i + 4 < span_end; i += 4)
3993 {
3994 uint32_t insn_1 = bfd_getl32 (contents + i);
3995 uint32_t insn_2 = bfd_getl32 (contents + i + 4);
3996
3997 if (aarch64_erratum_sequence (insn_1, insn_2))
3998 {
5421cc6e 3999 struct elf_aarch64_stub_hash_entry *stub_entry;
35fee8b7
MS		 4000 char *stub_name = _bfd_aarch64_erratum_835769_stub_name (num_fixes);
4001 if (! stub_name)
2144188d 4002 return FALSE;
68fcca92 4003
5421cc6e
MS		 4004 stub_entry = _bfd_aarch64_add_stub_entry_in_group (stub_name,
4005 section,
4006 htab);
4007 if (! stub_entry)
4008 return FALSE;
68fcca92 4009
5421cc6e
MS		 4010 stub_entry->stub_type = aarch64_stub_erratum_835769_veneer;
4011 stub_entry->target_section = section;
4012 stub_entry->target_value = i + 4;
4013 stub_entry->veneered_insn = insn_2;
4014 stub_entry->output_name = stub_name;
68fcca92
JW		 4015 num_fixes++;
4016 }
4017 }
4018 }
4019 if (elf_section_data (section)->this_hdr.contents == NULL)
4020 free (contents);
4021 }
4022
357d1523
MS		 4023 *num_fixes_p = num_fixes;
4024
2144188d 4025 return TRUE;
68fcca92
JW		 4026}
4027
13f622ec 4028
4106101c
MS		 4029/* Test if instruction INSN is ADRP. */
4030
4031static bfd_boolean
4032_bfd_aarch64_adrp_p (uint32_t insn)
4033{
9fca35fc 4034 return ((insn & AARCH64_ADRP_OP_MASK) == AARCH64_ADRP_OP);
4106101c
MS		 4035}
4036
4037
4038/* Helper predicate to look for cortex-a53 erratum 843419 sequence 1. */
4039
4040static bfd_boolean
4041_bfd_aarch64_erratum_843419_sequence_p (uint32_t insn_1, uint32_t insn_2,
4042 uint32_t insn_3)
4043{
4044 uint32_t rt;
4045 uint32_t rt2;
4046 bfd_boolean pair;
4047 bfd_boolean load;
4048
4049 return (aarch64_mem_op_p (insn_2, &rt, &rt2, &pair, &load)
4050 && (!pair
4051 || (pair && !load))
4052 && AARCH64_LDST_UIMM (insn_3)
4053 && AARCH64_RN (insn_3) == AARCH64_RD (insn_1));
4054}
4055
4056
4057/* Test for the presence of Cortex-A53 erratum 843419 instruction sequence.
4058
4059 Return TRUE if section CONTENTS at offset I contains one of the
4060 erratum 843419 sequences, otherwise return FALSE. If a sequence is
4061 seen set P_VENEER_I to the offset of the final LOAD/STORE
4062 instruction in the sequence.
4063 */
4064
4065static bfd_boolean
4066_bfd_aarch64_erratum_843419_p (bfd_byte *contents, bfd_vma vma,
4067 bfd_vma i, bfd_vma span_end,
4068 bfd_vma *p_veneer_i)
4069{
4070 uint32_t insn_1 = bfd_getl32 (contents + i);
4071
4072 if (!_bfd_aarch64_adrp_p (insn_1))
4073 return FALSE;
4074
4075 if (span_end < i + 12)
4076 return FALSE;
4077
4078 uint32_t insn_2 = bfd_getl32 (contents + i + 4);
4079 uint32_t insn_3 = bfd_getl32 (contents + i + 8);
4080
4081 if ((vma & 0xfff) != 0xff8 && (vma & 0xfff) != 0xffc)
4082 return FALSE;
4083
4084 if (_bfd_aarch64_erratum_843419_sequence_p (insn_1, insn_2, insn_3))
4085 {
4086 *p_veneer_i = i + 8;
4087 return TRUE;
4088 }
4089
4090 if (span_end < i + 16)
4091 return FALSE;
4092
4093 uint32_t insn_4 = bfd_getl32 (contents + i + 12);
4094
4095 if (_bfd_aarch64_erratum_843419_sequence_p (insn_1, insn_2, insn_4))
4096 {
4097 *p_veneer_i = i + 12;
4098 return TRUE;
4099 }
4100
4101 return FALSE;
4102}
4103
4104
13f622ec
MS		 4105/* Resize all stub sections. */
4106
4107static void
4108_bfd_aarch64_resize_stubs (struct elf_aarch64_link_hash_table *htab)
4109{
4110 asection *section;
4111
4112 /* OK, we've added some stubs. Find out the new size of the
4113 stub sections. */
4114 for (section = htab->stub_bfd->sections;
4115 section != NULL; section = section->next)
4116 {
4117 /* Ignore non-stub sections. */
4118 if (!strstr (section->name, STUB_SUFFIX))
4119 continue;
4120 section->size = 0;
4121 }
4122
4123 bfd_hash_traverse (&htab->stub_hash_table, aarch64_size_one_stub, htab);
13f622ec 4124
61865519
MS		 4125 for (section = htab->stub_bfd->sections;
4126 section != NULL; section = section->next)
4127 {
4128 if (!strstr (section->name, STUB_SUFFIX))
4129 continue;
4130
9a2ebffd
JW		 4131 /* Add space for a branch. Add 8 bytes to keep section 8 byte aligned,
4132 as long branch stubs contain a 64-bit address. */
61865519 4133 if (section->size)
9a2ebffd 4134 section->size += 8;
4106101c
MS		 4135
4136 /* Ensure all stub sections have a size which is a multiple of
4137 4096. This is important in order to ensure that the insertion
4138 of stub sections does not in itself move existing code around
739b5c9c
TC		 4139 in such a way that new errata sequences are created. We only do this
4140 when the ADRP workaround is enabled. If only the ADR workaround is
4141 enabled then the stubs workaround won't ever be used. */
4142 if (htab->fix_erratum_843419 & ERRAT_ADRP)
4106101c
MS		 4143 if (section->size)
4144 section->size = BFD_ALIGN (section->size, 0x1000);
4145 }
4146}
4147
9a2ebffd 4148/* Construct an erratum 843419 workaround stub name. */
4106101c
MS		 4149
4150static char *
4151_bfd_aarch64_erratum_843419_stub_name (asection *input_section,
4152 bfd_vma offset)
4153{
4154 const bfd_size_type len = 8 + 4 + 1 + 8 + 1 + 16 + 1;
4155 char *stub_name = bfd_malloc (len);
4156
4157 if (stub_name != NULL)
4158 snprintf (stub_name, len, "e843419@%04x_%08x_%" BFD_VMA_FMT "x",
4159 input_section->owner->id,
4160 input_section->id,
4161 offset);
4162 return stub_name;
4163}
4164
4165/* Build a stub_entry structure describing an 843419 fixup.
4166
4167 The stub_entry constructed is populated with the bit pattern INSN
4168 of the instruction located at OFFSET within input SECTION.
4169
4170 Returns TRUE on success. */
4171
4172static bfd_boolean
4173_bfd_aarch64_erratum_843419_fixup (uint32_t insn,
4174 bfd_vma adrp_offset,
4175 bfd_vma ldst_offset,
4176 asection *section,
4177 struct bfd_link_info *info)
4178{
4179 struct elf_aarch64_link_hash_table *htab = elf_aarch64_hash_table (info);
4180 char *stub_name;
4181 struct elf_aarch64_stub_hash_entry *stub_entry;
4182
4183 stub_name = _bfd_aarch64_erratum_843419_stub_name (section, ldst_offset);
bb69498c
NC		 4184 if (stub_name == NULL)
4185 return FALSE;
4106101c
MS		 4186 stub_entry = aarch64_stub_hash_lookup (&htab->stub_hash_table, stub_name,
4187 FALSE, FALSE);
4188 if (stub_entry)
4189 {
4190 free (stub_name);
4191 return TRUE;
4192 }
4193
4194 /* We always place an 843419 workaround veneer in the stub section
4195 attached to the input section in which an erratum sequence has
4196 been found. This ensures that later in the link process (in
4197 elfNN_aarch64_write_section) when we copy the veneered
4198 instruction from the input section into the stub section the
4199 copied instruction will have had any relocations applied to it.
4200 If we placed workaround veneers in any other stub section then we
4201 could not assume that all relocations have been processed on the
4202 corresponding input section at the point we output the stub
bb69498c 4203 section. */
4106101c
MS		 4204
4205 stub_entry = _bfd_aarch64_add_stub_entry_after (stub_name, section, htab);
4206 if (stub_entry == NULL)
4207 {
4208 free (stub_name);
4209 return FALSE;
4210 }
4211
4212 stub_entry->adrp_offset = adrp_offset;
4213 stub_entry->target_value = ldst_offset;
4214 stub_entry->target_section = section;
4215 stub_entry->stub_type = aarch64_stub_erratum_843419_veneer;
4216 stub_entry->veneered_insn = insn;
4217 stub_entry->output_name = stub_name;
4218
4219 return TRUE;
4220}
4221
4222
4223/* Scan an input section looking for the signature of erratum 843419.
4224
4225 Scans input SECTION in INPUT_BFD looking for erratum 843419
4226 signatures, for each signature found a stub_entry is created
4227 describing the location of the erratum for subsequent fixup.
4228
4229 Return TRUE on successful scan, FALSE on failure to scan.
4230 */
4231
4232static bfd_boolean
4233_bfd_aarch64_erratum_843419_scan (bfd *input_bfd, asection *section,
4234 struct bfd_link_info *info)
4235{
4236 struct elf_aarch64_link_hash_table *htab = elf_aarch64_hash_table (info);
4237
4238 if (htab == NULL)
4239 return TRUE;
4240
4241 if (elf_section_type (section) != SHT_PROGBITS
4242 || (elf_section_flags (section) & SHF_EXECINSTR) == 0
4243 || (section->flags & SEC_EXCLUDE) != 0
4244 || (section->sec_info_type == SEC_INFO_TYPE_JUST_SYMS)
4245 || (section->output_section == bfd_abs_section_ptr))
4246 return TRUE;
4247
4248 do
4249 {
4250 bfd_byte *contents = NULL;
4251 struct _aarch64_elf_section_data *sec_data;
4252 unsigned int span;
4253
4254 if (elf_section_data (section)->this_hdr.contents != NULL)
4255 contents = elf_section_data (section)->this_hdr.contents;
4256 else if (! bfd_malloc_and_get_section (input_bfd, section, &contents))
4257 return FALSE;
4258
4259 sec_data = elf_aarch64_section_data (section);
4260
4261 qsort (sec_data->map, sec_data->mapcount,
4262 sizeof (elf_aarch64_section_map), elf_aarch64_compare_mapping);
4263
4264 for (span = 0; span < sec_data->mapcount; span++)
4265 {
4266 unsigned int span_start = sec_data->map[span].vma;
4267 unsigned int span_end = ((span == sec_data->mapcount - 1)
4268 ? sec_data->map[0].vma + section->size
4269 : sec_data->map[span + 1].vma);
4270 unsigned int i;
4271 char span_type = sec_data->map[span].type;
4272
4273 if (span_type == 'd')
4274 continue;
4275
4276 for (i = span_start; i + 8 < span_end; i += 4)
4277 {
4278 bfd_vma vma = (section->output_section->vma
4279 + section->output_offset
4280 + i);
4281 bfd_vma veneer_i;
4282
4283 if (_bfd_aarch64_erratum_843419_p
4284 (contents, vma, i, span_end, &veneer_i))
4285 {
4286 uint32_t insn = bfd_getl32 (contents + veneer_i);
4287
4288 if (!_bfd_aarch64_erratum_843419_fixup (insn, i, veneer_i,
4289 section, info))
4290 return FALSE;
4291 }
4292 }
4293 }
4294
4295 if (elf_section_data (section)->this_hdr.contents == NULL)
4296 free (contents);
61865519 4297 }
4106101c
MS		 4298 while (0);
4299
4300 return TRUE;
61865519 4301}
13f622ec 4302
4106101c 4303
a06ea964
NC		 4304/* Determine and set the size of the stub section for a final link.
4305
4306 The basic idea here is to examine all the relocations looking for
4307 PC-relative calls to a target that is unreachable with a "bl"
4308 instruction. */
4309
4310bfd_boolean
cec5225b 4311elfNN_aarch64_size_stubs (bfd *output_bfd,
a06ea964
NC		 4312 bfd *stub_bfd,
4313 struct bfd_link_info *info,
4314 bfd_signed_vma group_size,
4315 asection * (*add_stub_section) (const char *,
4316 asection *),
4317 void (*layout_sections_again) (void))
4318{
4319 bfd_size_type stub_group_size;
4320 bfd_boolean stubs_always_before_branch;
5421cc6e 4321 bfd_boolean stub_changed = FALSE;
cec5225b 4322 struct elf_aarch64_link_hash_table *htab = elf_aarch64_hash_table (info);
68fcca92 4323 unsigned int num_erratum_835769_fixes = 0;
a06ea964
NC		 4324
4325 /* Propagate mach to stub bfd, because it may not have been
4326 finalized when we created stub_bfd. */
4327 bfd_set_arch_mach (stub_bfd, bfd_get_arch (output_bfd),
4328 bfd_get_mach (output_bfd));
4329
4330 /* Stash our params away. */
4331 htab->stub_bfd = stub_bfd;
4332 htab->add_stub_section = add_stub_section;
4333 htab->layout_sections_again = layout_sections_again;
4334 stubs_always_before_branch = group_size < 0;
4335 if (group_size < 0)
4336 stub_group_size = -group_size;
4337 else
4338 stub_group_size = group_size;
4339
4340 if (stub_group_size == 1)
4341 {
4342 /* Default values. */
b9eead84 4343 /* AArch64 branch range is +-128MB. The value used is 1MB less. */
a06ea964
NC		 4344 stub_group_size = 127 * 1024 * 1024;
4345 }
4346
4347 group_sections (htab, stub_group_size, stubs_always_before_branch);
4348
4106101c
MS		 4349 (*htab->layout_sections_again) ();
4350
5421cc6e
MS		 4351 if (htab->fix_erratum_835769)
4352 {
4353 bfd *input_bfd;
4354
4355 for (input_bfd = info->input_bfds;
4356 input_bfd != NULL; input_bfd = input_bfd->link.next)
8c803a2d
AM		 4357 {
4358 if (!is_aarch64_elf (input_bfd)
4359 || (input_bfd->flags & BFD_LINKER_CREATED) != 0)
4360 continue;
4361
4362 if (!_bfd_aarch64_erratum_835769_scan (input_bfd, info,
4363 &num_erratum_835769_fixes))
4364 return FALSE;
4365 }
5421cc6e 4366
4106101c
MS		 4367 _bfd_aarch64_resize_stubs (htab);
4368 (*htab->layout_sections_again) ();
4369 }
4370
739b5c9c 4371 if (htab->fix_erratum_843419 != ERRAT_NONE)
4106101c
MS		 4372 {
4373 bfd *input_bfd;
4374
4375 for (input_bfd = info->input_bfds;
4376 input_bfd != NULL;
4377 input_bfd = input_bfd->link.next)
4378 {
4379 asection *section;
4380
8c803a2d
AM		 4381 if (!is_aarch64_elf (input_bfd)
4382 || (input_bfd->flags & BFD_LINKER_CREATED) != 0)
4383 continue;
4384
4106101c
MS		 4385 for (section = input_bfd->sections;
4386 section != NULL;
4387 section = section->next)
4388 if (!_bfd_aarch64_erratum_843419_scan (input_bfd, section, info))
4389 return FALSE;
4390 }
4391
4392 _bfd_aarch64_resize_stubs (htab);
4393 (*htab->layout_sections_again) ();
5421cc6e
MS		 4394 }
4395
a06ea964
NC		 4396 while (1)
4397 {
4398 bfd *input_bfd;
a06ea964 4399
9b9971aa
MS		 4400 for (input_bfd = info->input_bfds;
4401 input_bfd != NULL; input_bfd = input_bfd->link.next)
a06ea964
NC		 4402 {
4403 Elf_Internal_Shdr *symtab_hdr;
4404 asection *section;
4405 Elf_Internal_Sym *local_syms = NULL;
4406
8c803a2d
AM		 4407 if (!is_aarch64_elf (input_bfd)
4408 || (input_bfd->flags & BFD_LINKER_CREATED) != 0)
4409 continue;
4410
a06ea964
NC		 4411 /* We'll need the symbol table in a second. */
4412 symtab_hdr = &elf_tdata (input_bfd)->symtab_hdr;
4413 if (symtab_hdr->sh_info == 0)
4414 continue;
4415
4416 /* Walk over each section attached to the input bfd. */
4417 for (section = input_bfd->sections;
4418 section != NULL; section = section->next)
4419 {
4420 Elf_Internal_Rela *internal_relocs, *irelaend, *irela;
4421
4422 /* If there aren't any relocs, then there's nothing more
4423 to do. */
4424 if ((section->flags & SEC_RELOC) == 0
4425 || section->reloc_count == 0
4426 || (section->flags & SEC_CODE) == 0)
4427 continue;
4428
4429 /* If this section is a link-once section that will be
4430 discarded, then don't create any stubs. */
4431 if (section->output_section == NULL
4432 || section->output_section->owner != output_bfd)
4433 continue;
4434
4435 /* Get the relocs. */
4436 internal_relocs
4437 = _bfd_elf_link_read_relocs (input_bfd, section, NULL,
4438 NULL, info->keep_memory);
4439 if (internal_relocs == NULL)
4440 goto error_ret_free_local;
4441
4442 /* Now examine each relocation. */
4443 irela = internal_relocs;
4444 irelaend = irela + section->reloc_count;
4445 for (; irela < irelaend; irela++)
4446 {
4447 unsigned int r_type, r_indx;
cec5225b
YZ		 4448 enum elf_aarch64_stub_type stub_type;
4449 struct elf_aarch64_stub_hash_entry *stub_entry;
a06ea964
NC		 4450 asection *sym_sec;
4451 bfd_vma sym_value;
4452 bfd_vma destination;
cec5225b 4453 struct elf_aarch64_link_hash_entry *hash;
a06ea964
NC		 4454 const char *sym_name;
4455 char *stub_name;
4456 const asection *id_sec;
4457 unsigned char st_type;
4458 bfd_size_type len;
4459
cec5225b
YZ		 4460 r_type = ELFNN_R_TYPE (irela->r_info);
4461 r_indx = ELFNN_R_SYM (irela->r_info);
a06ea964
NC		 4462
4463 if (r_type >= (unsigned int) R_AARCH64_end)
4464 {
4465 bfd_set_error (bfd_error_bad_value);
4466 error_ret_free_internal:
4467 if (elf_section_data (section)->relocs == NULL)
4468 free (internal_relocs);
4469 goto error_ret_free_local;
4470 }
4471
4472 /* Only look for stubs on unconditional branch and
4473 branch and link instructions. */
a6bb11b2
YZ		 4474 if (r_type != (unsigned int) AARCH64_R (CALL26)
4475 && r_type != (unsigned int) AARCH64_R (JUMP26))
a06ea964
NC		 4476 continue;
4477
4478 /* Now determine the call target, its name, value,
4479 section. */
4480 sym_sec = NULL;
4481 sym_value = 0;
4482 destination = 0;
4483 hash = NULL;
4484 sym_name = NULL;
4485 if (r_indx < symtab_hdr->sh_info)
4486 {
4487 /* It's a local symbol. */
4488 Elf_Internal_Sym *sym;
4489 Elf_Internal_Shdr *hdr;
4490
4491 if (local_syms == NULL)
4492 {
4493 local_syms
4494 = (Elf_Internal_Sym *) symtab_hdr->contents;
4495 if (local_syms == NULL)
4496 local_syms
4497 = bfd_elf_get_elf_syms (input_bfd, symtab_hdr,
4498 symtab_hdr->sh_info, 0,
4499 NULL, NULL, NULL);
4500 if (local_syms == NULL)
4501 goto error_ret_free_internal;
4502 }
4503
4504 sym = local_syms + r_indx;
4505 hdr = elf_elfsections (input_bfd)[sym->st_shndx];
4506 sym_sec = hdr->bfd_section;
4507 if (!sym_sec)
4508 /* This is an undefined symbol. It can never
4509 be resolved. */
4510 continue;
4511
4512 if (ELF_ST_TYPE (sym->st_info) != STT_SECTION)
4513 sym_value = sym->st_value;
4514 destination = (sym_value + irela->r_addend
4515 + sym_sec->output_offset
4516 + sym_sec->output_section->vma);
4517 st_type = ELF_ST_TYPE (sym->st_info);
4518 sym_name
4519 = bfd_elf_string_from_elf_section (input_bfd,
4520 symtab_hdr->sh_link,
4521 sym->st_name);
4522 }
4523 else
4524 {
4525 int e_indx;
4526
4527 e_indx = r_indx - symtab_hdr->sh_info;
cec5225b 4528 hash = ((struct elf_aarch64_link_hash_entry *)
a06ea964
NC		 4529 elf_sym_hashes (input_bfd)[e_indx]);
4530
4531 while (hash->root.root.type == bfd_link_hash_indirect
4532 || hash->root.root.type == bfd_link_hash_warning)
cec5225b 4533 hash = ((struct elf_aarch64_link_hash_entry *)
a06ea964
NC		 4534 hash->root.root.u.i.link);
4535
4536 if (hash->root.root.type == bfd_link_hash_defined
4537 || hash->root.root.type == bfd_link_hash_defweak)
4538 {
cec5225b
YZ		 4539 struct elf_aarch64_link_hash_table *globals =
4540 elf_aarch64_hash_table (info);
a06ea964
NC		 4541 sym_sec = hash->root.root.u.def.section;
4542 sym_value = hash->root.root.u.def.value;
4543 /* For a destination in a shared library,
4544 use the PLT stub as target address to
4545 decide whether a branch stub is
4546 needed. */
4547 if (globals->root.splt != NULL && hash != NULL
4548 && hash->root.plt.offset != (bfd_vma) - 1)
4549 {
4550 sym_sec = globals->root.splt;
4551 sym_value = hash->root.plt.offset;
4552 if (sym_sec->output_section != NULL)
4553 destination = (sym_value
4554 + sym_sec->output_offset
4555 +
4556 sym_sec->output_section->vma);
4557 }
4558 else if (sym_sec->output_section != NULL)
4559 destination = (sym_value + irela->r_addend
4560 + sym_sec->output_offset
4561 + sym_sec->output_section->vma);
4562 }
4563 else if (hash->root.root.type == bfd_link_hash_undefined
4564 || (hash->root.root.type
4565 == bfd_link_hash_undefweak))
4566 {
4567 /* For a shared library, use the PLT stub as
4568 target address to decide whether a long
4569 branch stub is needed.
4570 For absolute code, they cannot be handled. */
cec5225b
YZ		 4571 struct elf_aarch64_link_hash_table *globals =
4572 elf_aarch64_hash_table (info);
a06ea964
NC		 4573
4574 if (globals->root.splt != NULL && hash != NULL
4575 && hash->root.plt.offset != (bfd_vma) - 1)
4576 {
4577 sym_sec = globals->root.splt;
4578 sym_value = hash->root.plt.offset;
4579 if (sym_sec->output_section != NULL)
4580 destination = (sym_value
4581 + sym_sec->output_offset
4582 +
4583 sym_sec->output_section->vma);
4584 }
4585 else
4586 continue;
4587 }
4588 else
4589 {
4590 bfd_set_error (bfd_error_bad_value);
4591 goto error_ret_free_internal;
4592 }
4593 st_type = ELF_ST_TYPE (hash->root.type);
4594 sym_name = hash->root.root.root.string;
4595 }
4596
4597 /* Determine what (if any) linker stub is needed. */
9a228467
JW		 4598 stub_type = aarch64_type_of_stub (section, irela, sym_sec,
4599 st_type, destination);
a06ea964
NC		 4600 if (stub_type == aarch64_stub_none)
4601 continue;
4602
4603 /* Support for grouping stub sections. */
4604 id_sec = htab->stub_group[section->id].link_sec;
4605
4606 /* Get the name of this stub. */
cec5225b 4607 stub_name = elfNN_aarch64_stub_name (id_sec, sym_sec, hash,
a06ea964
NC		 4608 irela);
4609 if (!stub_name)
4610 goto error_ret_free_internal;
4611
4612 stub_entry =
4613 aarch64_stub_hash_lookup (&htab->stub_hash_table,
4614 stub_name, FALSE, FALSE);
4615 if (stub_entry != NULL)
4616 {
4617 /* The proper stub has already been created. */
4618 free (stub_name);
3da64fe4
RA		 4619 /* Always update this stub's target since it may have
4620 changed after layout. */
4621 stub_entry->target_value = sym_value + irela->r_addend;
a06ea964
NC		 4622 continue;
4623 }
4624
ef857521
MS		 4625 stub_entry = _bfd_aarch64_add_stub_entry_in_group
4626 (stub_name, section, htab);
a06ea964
NC		 4627 if (stub_entry == NULL)
4628 {
4629 free (stub_name);
4630 goto error_ret_free_internal;
4631 }
4632
2f340668 4633 stub_entry->target_value = sym_value + irela->r_addend;
a06ea964
NC		 4634 stub_entry->target_section = sym_sec;
4635 stub_entry->stub_type = stub_type;
4636 stub_entry->h = hash;
4637 stub_entry->st_type = st_type;
4638
4639 if (sym_name == NULL)
4640 sym_name = "unnamed";
4641 len = sizeof (STUB_ENTRY_NAME) + strlen (sym_name);
4642 stub_entry->output_name = bfd_alloc (htab->stub_bfd, len);
4643 if (stub_entry->output_name == NULL)
4644 {
4645 free (stub_name);
4646 goto error_ret_free_internal;
4647 }
4648
4649 snprintf (stub_entry->output_name, len, STUB_ENTRY_NAME,
4650 sym_name);
4651
4652 stub_changed = TRUE;
4653 }
4654
4655 /* We're done with the internal relocs, free them. */
4656 if (elf_section_data (section)->relocs == NULL)
4657 free (internal_relocs);
4658 }
4659 }
4660
4661 if (!stub_changed)
4662 break;
4663
13f622ec 4664 _bfd_aarch64_resize_stubs (htab);
a06ea964
NC		 4665
4666 /* Ask the linker to do its stuff. */
4667 (*htab->layout_sections_again) ();
4668 stub_changed = FALSE;
4669 }
4670
4671 return TRUE;
4672
dc1e8a47 4673 error_ret_free_local:
a06ea964
NC		 4674 return FALSE;
4675}
4676
4677/* Build all the stubs associated with the current output file. The
4678 stubs are kept in a hash table attached to the main linker hash
4679 table. We also set up the .plt entries for statically linked PIC
4680 functions here. This function is called via aarch64_elf_finish in the
4681 linker. */
4682
4683bfd_boolean
cec5225b 4684elfNN_aarch64_build_stubs (struct bfd_link_info *info)
a06ea964
NC		 4685{
4686 asection *stub_sec;
4687 struct bfd_hash_table *table;
cec5225b 4688 struct elf_aarch64_link_hash_table *htab;
a06ea964 4689
cec5225b 4690 htab = elf_aarch64_hash_table (info);
a06ea964
NC		 4691
4692 for (stub_sec = htab->stub_bfd->sections;
4693 stub_sec != NULL; stub_sec = stub_sec->next)
4694 {
4695 bfd_size_type size;
4696
4697 /* Ignore non-stub sections. */
4698 if (!strstr (stub_sec->name, STUB_SUFFIX))
4699 continue;
4700
4701 /* Allocate memory to hold the linker stubs. */
4702 size = stub_sec->size;
4703 stub_sec->contents = bfd_zalloc (htab->stub_bfd, size);
4704 if (stub_sec->contents == NULL && size != 0)
4705 return FALSE;
4706 stub_sec->size = 0;
61865519 4707
9a2ebffd
JW		 4708 /* Add a branch around the stub section, and a nop, to keep it 8 byte
4709 aligned, as long branch stubs contain a 64-bit address. */
61865519 4710 bfd_putl32 (0x14000000 | (size >> 2), stub_sec->contents);
9a2ebffd
JW		 4711 bfd_putl32 (INSN_NOP, stub_sec->contents + 4);
4712 stub_sec->size += 8;
a06ea964
NC		 4713 }
4714
4715 /* Build the stubs as directed by the stub hash table. */
4716 table = &htab->stub_hash_table;
4717 bfd_hash_traverse (table, aarch64_build_one_stub, info);
4718
4719 return TRUE;
4720}
4721
4722
4723/* Add an entry to the code/data map for section SEC. */
4724
4725static void
cec5225b 4726elfNN_aarch64_section_map_add (asection *sec, char type, bfd_vma vma)
a06ea964
NC		 4727{
4728 struct _aarch64_elf_section_data *sec_data =
cec5225b 4729 elf_aarch64_section_data (sec);
a06ea964
NC		 4730 unsigned int newidx;
4731
4732 if (sec_data->map == NULL)
4733 {
cec5225b 4734 sec_data->map = bfd_malloc (sizeof (elf_aarch64_section_map));
a06ea964
NC		 4735 sec_data->mapcount = 0;
4736 sec_data->mapsize = 1;
4737 }
4738
4739 newidx = sec_data->mapcount++;
4740
4741 if (sec_data->mapcount > sec_data->mapsize)
4742 {
4743 sec_data->mapsize *= 2;
4744 sec_data->map = bfd_realloc_or_free
cec5225b 4745 (sec_data->map, sec_data->mapsize * sizeof (elf_aarch64_section_map));
a06ea964
NC		 4746 }
4747
4748 if (sec_data->map)
4749 {
4750 sec_data->map[newidx].vma = vma;
4751 sec_data->map[newidx].type = type;
4752 }
4753}
4754
4755
4756/* Initialise maps of insn/data for input BFDs. */
4757void
cec5225b 4758bfd_elfNN_aarch64_init_maps (bfd *abfd)
a06ea964
NC		 4759{
4760 Elf_Internal_Sym *isymbuf;
4761 Elf_Internal_Shdr *hdr;
4762 unsigned int i, localsyms;
4763
4764 /* Make sure that we are dealing with an AArch64 elf binary. */
4765 if (!is_aarch64_elf (abfd))
4766 return;
4767
4768 if ((abfd->flags & DYNAMIC) != 0)
68fcca92 4769 return;
a06ea964
NC		 4770
4771 hdr = &elf_symtab_hdr (abfd);
4772 localsyms = hdr->sh_info;
4773
4774 /* Obtain a buffer full of symbols for this BFD. The hdr->sh_info field
4775 should contain the number of local symbols, which should come before any
4776 global symbols. Mapping symbols are always local. */
4777 isymbuf = bfd_elf_get_elf_syms (abfd, hdr, localsyms, 0, NULL, NULL, NULL);
4778
4779 /* No internal symbols read? Skip this BFD. */
4780 if (isymbuf == NULL)
4781 return;
4782
4783 for (i = 0; i < localsyms; i++)
4784 {
4785 Elf_Internal_Sym *isym = &isymbuf[i];
4786 asection *sec = bfd_section_from_elf_index (abfd, isym->st_shndx);
4787 const char *name;
4788
4789 if (sec != NULL && ELF_ST_BIND (isym->st_info) == STB_LOCAL)
4790 {
4791 name = bfd_elf_string_from_elf_section (abfd,
4792 hdr->sh_link,
4793 isym->st_name);
4794
4795 if (bfd_is_aarch64_special_symbol_name
4796 (name, BFD_AARCH64_SPECIAL_SYM_TYPE_MAP))
cec5225b 4797 elfNN_aarch64_section_map_add (sec, name[1], isym->st_value);
a06ea964
NC		 4798 }
4799 }
4800}
4801
37c18eed
SD		 4802static void
4803setup_plt_values (struct bfd_link_info *link_info,
4804 aarch64_plt_type plt_type)
4805{
4806 struct elf_aarch64_link_hash_table *globals;
4807 globals = elf_aarch64_hash_table (link_info);
4808
1dbade74
SD		 4809 if (plt_type == PLT_BTI_PAC)
4810 {
68bb0359 4811 globals->plt0_entry = elfNN_aarch64_small_plt0_bti_entry;
1dbade74
SD		 4812
4813 /* Only in ET_EXEC we need PLTn with BTI. */
4814 if (bfd_link_pde (link_info))
4815 {
4816 globals->plt_entry_size = PLT_BTI_PAC_SMALL_ENTRY_SIZE;
4817 globals->plt_entry = elfNN_aarch64_small_plt_bti_pac_entry;
4818 }
4819 else
4820 {
4821 globals->plt_entry_size = PLT_PAC_SMALL_ENTRY_SIZE;
4822 globals->plt_entry = elfNN_aarch64_small_plt_pac_entry;
4823 }
4824 }
4825 else if (plt_type == PLT_BTI)
37c18eed 4826 {
37c18eed 4827 globals->plt0_entry = elfNN_aarch64_small_plt0_bti_entry;
37c18eed
SD		 4828
4829 /* Only in ET_EXEC we need PLTn with BTI. */
4830 if (bfd_link_pde (link_info))
4831 {
4832 globals->plt_entry_size = PLT_BTI_SMALL_ENTRY_SIZE;
4833 globals->plt_entry = elfNN_aarch64_small_plt_bti_entry;
4834 }
4835 }
1dbade74
SD		 4836 else if (plt_type == PLT_PAC)
4837 {
1dbade74
SD		 4838 globals->plt_entry_size = PLT_PAC_SMALL_ENTRY_SIZE;
4839 globals->plt_entry = elfNN_aarch64_small_plt_pac_entry;
4840 }
37c18eed
SD		 4841}
4842
a06ea964
NC		 4843/* Set option values needed during linking. */
4844void
cec5225b 4845bfd_elfNN_aarch64_set_options (struct bfd *output_bfd,
a06ea964
NC		 4846 struct bfd_link_info *link_info,
4847 int no_enum_warn,
68fcca92 4848 int no_wchar_warn, int pic_veneer,
4106101c 4849 int fix_erratum_835769,
739b5c9c 4850 erratum_84319_opts fix_erratum_843419,
37c18eed
SD		 4851 int no_apply_dynamic_relocs,
4852 aarch64_bti_pac_info bp_info)
a06ea964 4853{
cec5225b 4854 struct elf_aarch64_link_hash_table *globals;
a06ea964 4855
cec5225b 4856 globals = elf_aarch64_hash_table (link_info);
a06ea964 4857 globals->pic_veneer = pic_veneer;
68fcca92 4858 globals->fix_erratum_835769 = fix_erratum_835769;
739b5c9c
TC		 4859 /* If the default options are used, then ERRAT_ADR will be set by default
4860 which will enable the ADRP->ADR workaround for the erratum 843419
4861 workaround. */
4106101c 4862 globals->fix_erratum_843419 = fix_erratum_843419;
1f56df9d 4863 globals->no_apply_dynamic_relocs = no_apply_dynamic_relocs;
a06ea964
NC		 4864
4865 BFD_ASSERT (is_aarch64_elf (output_bfd));
4866 elf_aarch64_tdata (output_bfd)->no_enum_size_warning = no_enum_warn;
4867 elf_aarch64_tdata (output_bfd)->no_wchar_size_warning = no_wchar_warn;
37c18eed
SD		 4868
4869 switch (bp_info.bti_type)
4870 {
4871 case BTI_WARN:
4872 elf_aarch64_tdata (output_bfd)->no_bti_warn = 0;
4873 elf_aarch64_tdata (output_bfd)->gnu_and_prop
4874 |= GNU_PROPERTY_AARCH64_FEATURE_1_BTI;
4875 break;
4876
4877 default:
4878 break;
4879 }
4880 elf_aarch64_tdata (output_bfd)->plt_type = bp_info.plt_type;
4881 setup_plt_values (link_info, bp_info.plt_type);
a06ea964
NC		 4882}
4883
a06ea964
NC		 4884static bfd_vma
4885aarch64_calculate_got_entry_vma (struct elf_link_hash_entry *h,
cec5225b 4886 struct elf_aarch64_link_hash_table
a06ea964
NC		 4887 *globals, struct bfd_link_info *info,
4888 bfd_vma value, bfd *output_bfd,
4889 bfd_boolean *unresolved_reloc_p)
4890{
4891 bfd_vma off = (bfd_vma) - 1;
4892 asection *basegot = globals->root.sgot;
4893 bfd_boolean dyn = globals->root.dynamic_sections_created;
4894
4895 if (h != NULL)
4896 {
a6bb11b2 4897 BFD_ASSERT (basegot != NULL);
a06ea964
NC		 4898 off = h->got.offset;
4899 BFD_ASSERT (off != (bfd_vma) - 1);
0e1862bb
L		 4900 if (!WILL_CALL_FINISH_DYNAMIC_SYMBOL (dyn, bfd_link_pic (info), h)
4901 || (bfd_link_pic (info)
a06ea964
NC		 4902 && SYMBOL_REFERENCES_LOCAL (info, h))
4903 || (ELF_ST_VISIBILITY (h->other)
4904 && h->root.type == bfd_link_hash_undefweak))
4905 {
4906 /* This is actually a static link, or it is a -Bsymbolic link
4907 and the symbol is defined locally. We must initialize this
4908 entry in the global offset table. Since the offset must
a6bb11b2
YZ		 4909 always be a multiple of 8 (4 in the case of ILP32), we use
4910 the least significant bit to record whether we have
4911 initialized it already.
a06ea964
NC		 4912 When doing a dynamic link, we create a .rel(a).got relocation
4913 entry to initialize the value. This is done in the
4914 finish_dynamic_symbol routine. */
4915 if ((off & 1) != 0)
4916 off &= ~1;
4917 else
4918 {
cec5225b 4919 bfd_put_NN (output_bfd, value, basegot->contents + off);
a06ea964
NC		 4920 h->got.offset |= 1;
4921 }
4922 }
4923 else
4924 *unresolved_reloc_p = FALSE;
4925
4926 off = off + basegot->output_section->vma + basegot->output_offset;
4927 }
4928
4929 return off;
4930}
4931
4932/* Change R_TYPE to a more efficient access model where possible,
4933 return the new reloc type. */
4934
a6bb11b2
YZ		 4935static bfd_reloc_code_real_type
4936aarch64_tls_transition_without_check (bfd_reloc_code_real_type r_type,
a06ea964
NC		 4937 struct elf_link_hash_entry *h)
4938{
4939 bfd_boolean is_local = h == NULL;
a6bb11b2 4940
a06ea964
NC		 4941 switch (r_type)
4942 {
a6bb11b2 4943 case BFD_RELOC_AARCH64_TLSDESC_ADR_PAGE21:
ce336788 4944 case BFD_RELOC_AARCH64_TLSGD_ADR_PAGE21:
a6bb11b2
YZ		 4945 return (is_local
4946 ? BFD_RELOC_AARCH64_TLSLE_MOVW_TPREL_G1
4947 : BFD_RELOC_AARCH64_TLSIE_ADR_GOTTPREL_PAGE21);
4948
389b8029
MS		 4949 case BFD_RELOC_AARCH64_TLSDESC_ADR_PREL21:
4950 return (is_local
4951 ? BFD_RELOC_AARCH64_TLSLE_MOVW_TPREL_G0_NC
4952 : r_type);
4953
1ada945d
MS		 4954 case BFD_RELOC_AARCH64_TLSDESC_LD_PREL19:
4955 return (is_local
4956 ? BFD_RELOC_AARCH64_TLSLE_MOVW_TPREL_G1
4957 : BFD_RELOC_AARCH64_TLSIE_LD_GOTTPREL_PREL19);
4958
0484b454
RL		 4959 case BFD_RELOC_AARCH64_TLSDESC_LDR:
4960 return (is_local
4961 ? BFD_RELOC_AARCH64_TLSLE_MOVW_TPREL_G0_NC
4962 : BFD_RELOC_AARCH64_NONE);
4963
4964 case BFD_RELOC_AARCH64_TLSDESC_OFF_G0_NC:
4965 return (is_local
4966 ? BFD_RELOC_AARCH64_TLSLE_MOVW_TPREL_G1_NC
4967 : BFD_RELOC_AARCH64_TLSIE_MOVW_GOTTPREL_G0_NC);
4968
4969 case BFD_RELOC_AARCH64_TLSDESC_OFF_G1:
4970 return (is_local
4971 ? BFD_RELOC_AARCH64_TLSLE_MOVW_TPREL_G2
4972 : BFD_RELOC_AARCH64_TLSIE_MOVW_GOTTPREL_G1);
4973
a6bb11b2 4974 case BFD_RELOC_AARCH64_TLSDESC_LDNN_LO12_NC:
ce336788 4975 case BFD_RELOC_AARCH64_TLSGD_ADD_LO12_NC:
a6bb11b2
YZ		 4976 return (is_local
4977 ? BFD_RELOC_AARCH64_TLSLE_MOVW_TPREL_G0_NC
4978 : BFD_RELOC_AARCH64_TLSIE_LDNN_GOTTPREL_LO12_NC);
4979
4980 case BFD_RELOC_AARCH64_TLSIE_ADR_GOTTPREL_PAGE21:
4981 return is_local ? BFD_RELOC_AARCH64_TLSLE_MOVW_TPREL_G1 : r_type;
4982
4983 case BFD_RELOC_AARCH64_TLSIE_LDNN_GOTTPREL_LO12_NC:
4984 return is_local ? BFD_RELOC_AARCH64_TLSLE_MOVW_TPREL_G0_NC : r_type;
4985
043bf05a
MS		 4986 case BFD_RELOC_AARCH64_TLSIE_LD_GOTTPREL_PREL19:
4987 return r_type;
4988
3c12b054
MS		 4989 case BFD_RELOC_AARCH64_TLSGD_ADR_PREL21:
4990 return (is_local
4991 ? BFD_RELOC_AARCH64_TLSLE_ADD_TPREL_HI12
4992 : BFD_RELOC_AARCH64_TLSIE_LD_GOTTPREL_PREL19);
4993
0484b454 4994 case BFD_RELOC_AARCH64_TLSDESC_ADD:
f955cccf 4995 case BFD_RELOC_AARCH64_TLSDESC_ADD_LO12:
a6bb11b2 4996 case BFD_RELOC_AARCH64_TLSDESC_CALL:
a06ea964 4997 /* Instructions with these relocations will become NOPs. */
a6bb11b2
YZ		 4998 return BFD_RELOC_AARCH64_NONE;
4999
259364ad
JW		 5000 case BFD_RELOC_AARCH64_TLSLD_ADD_LO12_NC:
5001 case BFD_RELOC_AARCH64_TLSLD_ADR_PAGE21:
5002 case BFD_RELOC_AARCH64_TLSLD_ADR_PREL21:
5003 return is_local ? BFD_RELOC_AARCH64_NONE : r_type;
5004
ac734732
RL		 5005#if ARCH_SIZE == 64
5006 case BFD_RELOC_AARCH64_TLSGD_MOVW_G0_NC:
5007 return is_local
5008 ? BFD_RELOC_AARCH64_TLSLE_MOVW_TPREL_G1_NC
5009 : BFD_RELOC_AARCH64_TLSIE_MOVW_GOTTPREL_G0_NC;
5010
5011 case BFD_RELOC_AARCH64_TLSGD_MOVW_G1:
5012 return is_local
5013 ? BFD_RELOC_AARCH64_TLSLE_MOVW_TPREL_G2
5014 : BFD_RELOC_AARCH64_TLSIE_MOVW_GOTTPREL_G1;
5015#endif
5016
a6bb11b2
YZ		 5017 default:
5018 break;
a06ea964
NC		 5019 }
5020
5021 return r_type;
5022}
5023
5024static unsigned int
a6bb11b2 5025aarch64_reloc_got_type (bfd_reloc_code_real_type r_type)
a06ea964
NC		 5026{
5027 switch (r_type)
5028 {
a6bb11b2
YZ		 5029 case BFD_RELOC_AARCH64_ADR_GOT_PAGE:
5030 case BFD_RELOC_AARCH64_GOT_LD_PREL19:
7018c030 5031 case BFD_RELOC_AARCH64_LD32_GOTPAGE_LO14:
ce336788 5032 case BFD_RELOC_AARCH64_LD32_GOT_LO12_NC:
a2e1db00 5033 case BFD_RELOC_AARCH64_LD64_GOTOFF_LO15:
99ad26cb 5034 case BFD_RELOC_AARCH64_LD64_GOTPAGE_LO15:
ce336788 5035 case BFD_RELOC_AARCH64_LD64_GOT_LO12_NC:
dc8008f5 5036 case BFD_RELOC_AARCH64_MOVW_GOTOFF_G0_NC:
74a1bfe1 5037 case BFD_RELOC_AARCH64_MOVW_GOTOFF_G1:
a06ea964
NC		 5038 return GOT_NORMAL;
5039
ce336788 5040 case BFD_RELOC_AARCH64_TLSGD_ADD_LO12_NC:
a6bb11b2 5041 case BFD_RELOC_AARCH64_TLSGD_ADR_PAGE21:
3c12b054 5042 case BFD_RELOC_AARCH64_TLSGD_ADR_PREL21:
7ba7cfe4 5043 case BFD_RELOC_AARCH64_TLSGD_MOVW_G0_NC:
94facae3 5044 case BFD_RELOC_AARCH64_TLSGD_MOVW_G1:
73f925cc 5045 case BFD_RELOC_AARCH64_TLSLD_ADD_LO12_NC:
f69e4920 5046 case BFD_RELOC_AARCH64_TLSLD_ADR_PAGE21:
77a69ff8 5047 case BFD_RELOC_AARCH64_TLSLD_ADR_PREL21:
a06ea964
NC		 5048 return GOT_TLS_GD;
5049
0484b454 5050 case BFD_RELOC_AARCH64_TLSDESC_ADD:
f955cccf 5051 case BFD_RELOC_AARCH64_TLSDESC_ADD_LO12:
a6bb11b2 5052 case BFD_RELOC_AARCH64_TLSDESC_ADR_PAGE21:
389b8029 5053 case BFD_RELOC_AARCH64_TLSDESC_ADR_PREL21:
a6bb11b2 5054 case BFD_RELOC_AARCH64_TLSDESC_CALL:
a6bb11b2 5055 case BFD_RELOC_AARCH64_TLSDESC_LD32_LO12_NC:
f955cccf 5056 case BFD_RELOC_AARCH64_TLSDESC_LD64_LO12:
1ada945d 5057 case BFD_RELOC_AARCH64_TLSDESC_LD_PREL19:
0484b454
RL		 5058 case BFD_RELOC_AARCH64_TLSDESC_LDR:
5059 case BFD_RELOC_AARCH64_TLSDESC_OFF_G0_NC:
5060 case BFD_RELOC_AARCH64_TLSDESC_OFF_G1:
a06ea964
NC		 5061 return GOT_TLSDESC_GD;
5062
a6bb11b2 5063 case BFD_RELOC_AARCH64_TLSIE_ADR_GOTTPREL_PAGE21:
a6bb11b2 5064 case BFD_RELOC_AARCH64_TLSIE_LD32_GOTTPREL_LO12_NC:
ce336788 5065 case BFD_RELOC_AARCH64_TLSIE_LD64_GOTTPREL_LO12_NC:
043bf05a 5066 case BFD_RELOC_AARCH64_TLSIE_LD_GOTTPREL_PREL19:
3b957e5b
RL		 5067 case BFD_RELOC_AARCH64_TLSIE_MOVW_GOTTPREL_G0_NC:
5068 case BFD_RELOC_AARCH64_TLSIE_MOVW_GOTTPREL_G1:
a06ea964
NC		 5069 return GOT_TLS_IE;
5070
a6bb11b2
YZ		 5071 default:
5072 break;
a06ea964
NC		 5073 }
5074 return GOT_UNKNOWN;
5075}
5076
5077static bfd_boolean
5078aarch64_can_relax_tls (bfd *input_bfd,
5079 struct bfd_link_info *info,
a6bb11b2 5080 bfd_reloc_code_real_type r_type,
a06ea964
NC		 5081 struct elf_link_hash_entry *h,
5082 unsigned long r_symndx)
5083{
5084 unsigned int symbol_got_type;
5085 unsigned int reloc_got_type;
5086
9331eea1 5087 if (! IS_AARCH64_TLS_RELAX_RELOC (r_type))
a06ea964
NC		 5088 return FALSE;
5089
cec5225b 5090 symbol_got_type = elfNN_aarch64_symbol_got_type (h, input_bfd, r_symndx);
a06ea964
NC		 5091 reloc_got_type = aarch64_reloc_got_type (r_type);
5092
5093 if (symbol_got_type == GOT_TLS_IE && GOT_TLS_GD_ANY_P (reloc_got_type))
5094 return TRUE;
5095
6dda7875 5096 if (!bfd_link_executable (info))
a06ea964
NC		 5097 return FALSE;
5098
5099 if (h && h->root.type == bfd_link_hash_undefweak)
5100 return FALSE;
5101
5102 return TRUE;
5103}
5104
a6bb11b2
YZ		 5105/* Given the relocation code R_TYPE, return the relaxed bfd reloc
5106 enumerator. */
5107
5108static bfd_reloc_code_real_type
a06ea964
NC		 5109aarch64_tls_transition (bfd *input_bfd,
5110 struct bfd_link_info *info,
5111 unsigned int r_type,
5112 struct elf_link_hash_entry *h,
5113 unsigned long r_symndx)
5114{
a6bb11b2 5115 bfd_reloc_code_real_type bfd_r_type
0aa13fee 5116 = elfNN_aarch64_bfd_reloc_from_type (input_bfd, r_type);
a06ea964 5117
a6bb11b2
YZ		 5118 if (! aarch64_can_relax_tls (input_bfd, info, bfd_r_type, h, r_symndx))
5119 return bfd_r_type;
5120
5121 return aarch64_tls_transition_without_check (bfd_r_type, h);
a06ea964
NC		 5122}
5123
5124/* Return the base VMA address which should be subtracted from real addresses
a6bb11b2 5125 when resolving R_AARCH64_TLS_DTPREL relocation. */
a06ea964
NC		 5126
5127static bfd_vma
5128dtpoff_base (struct bfd_link_info *info)
5129{
5130 /* If tls_sec is NULL, we should have signalled an error already. */
5131 BFD_ASSERT (elf_hash_table (info)->tls_sec != NULL);
5132 return elf_hash_table (info)->tls_sec->vma;
5133}
5134
a06ea964
NC		 5135/* Return the base VMA address which should be subtracted from real addresses
5136 when resolving R_AARCH64_TLS_GOTTPREL64 relocations. */
5137
5138static bfd_vma
5139tpoff_base (struct bfd_link_info *info)
5140{
5141 struct elf_link_hash_table *htab = elf_hash_table (info);
5142
5143 /* If tls_sec is NULL, we should have signalled an error already. */
ac21917f 5144 BFD_ASSERT (htab->tls_sec != NULL);
a06ea964
NC		 5145
5146 bfd_vma base = align_power ((bfd_vma) TCB_SIZE,
5147 htab->tls_sec->alignment_power);
5148 return htab->tls_sec->vma - base;
5149}
5150
5151static bfd_vma *
5152symbol_got_offset_ref (bfd *input_bfd, struct elf_link_hash_entry *h,
5153 unsigned long r_symndx)
5154{
5155 /* Calculate the address of the GOT entry for symbol
5156 referred to in h. */
5157 if (h != NULL)
5158 return &h->got.offset;
5159 else
5160 {
5161 /* local symbol */
5162 struct elf_aarch64_local_symbol *l;
5163
cec5225b 5164 l = elf_aarch64_locals (input_bfd);
a06ea964
NC		 5165 return &l[r_symndx].got_offset;
5166 }
5167}
5168
5169static void
5170symbol_got_offset_mark (bfd *input_bfd, struct elf_link_hash_entry *h,
5171 unsigned long r_symndx)
5172{
5173 bfd_vma *p;
5174 p = symbol_got_offset_ref (input_bfd, h, r_symndx);
5175 *p |= 1;
5176}
5177
5178static int
5179symbol_got_offset_mark_p (bfd *input_bfd, struct elf_link_hash_entry *h,
5180 unsigned long r_symndx)
5181{
5182 bfd_vma value;
5183 value = * symbol_got_offset_ref (input_bfd, h, r_symndx);
5184 return value & 1;
5185}
5186
5187static bfd_vma
5188symbol_got_offset (bfd *input_bfd, struct elf_link_hash_entry *h,
5189 unsigned long r_symndx)
5190{
5191 bfd_vma value;
5192 value = * symbol_got_offset_ref (input_bfd, h, r_symndx);
5193 value &= ~1;
5194 return value;
5195}
5196
5197static bfd_vma *
5198symbol_tlsdesc_got_offset_ref (bfd *input_bfd, struct elf_link_hash_entry *h,
5199 unsigned long r_symndx)
5200{
5201 /* Calculate the address of the GOT entry for symbol
5202 referred to in h. */
5203 if (h != NULL)
5204 {
cec5225b
YZ		 5205 struct elf_aarch64_link_hash_entry *eh;
5206 eh = (struct elf_aarch64_link_hash_entry *) h;
a06ea964
NC		 5207 return &eh->tlsdesc_got_jump_table_offset;
5208 }
5209 else
5210 {
5211 /* local symbol */
5212 struct elf_aarch64_local_symbol *l;
5213
cec5225b 5214 l = elf_aarch64_locals (input_bfd);
a06ea964
NC		 5215 return &l[r_symndx].tlsdesc_got_jump_table_offset;
5216 }
5217}
5218
5219static void
5220symbol_tlsdesc_got_offset_mark (bfd *input_bfd, struct elf_link_hash_entry *h,
5221 unsigned long r_symndx)
5222{
5223 bfd_vma *p;
5224 p = symbol_tlsdesc_got_offset_ref (input_bfd, h, r_symndx);
5225 *p |= 1;
5226}
5227
5228static int
5229symbol_tlsdesc_got_offset_mark_p (bfd *input_bfd,
5230 struct elf_link_hash_entry *h,
5231 unsigned long r_symndx)
5232{
5233 bfd_vma value;
5234 value = * symbol_tlsdesc_got_offset_ref (input_bfd, h, r_symndx);
5235 return value & 1;
5236}
5237
5238static bfd_vma
5239symbol_tlsdesc_got_offset (bfd *input_bfd, struct elf_link_hash_entry *h,
5240 unsigned long r_symndx)
5241{
5242 bfd_vma value;
5243 value = * symbol_tlsdesc_got_offset_ref (input_bfd, h, r_symndx);
5244 value &= ~1;
5245 return value;
5246}
5247
68fcca92
JW		 5248/* Data for make_branch_to_erratum_835769_stub(). */
5249
5250struct erratum_835769_branch_to_stub_data
5251{
4106101c 5252 struct bfd_link_info *info;
68fcca92
JW		 5253 asection *output_section;
5254 bfd_byte *contents;
5255};
5256
5257/* Helper to insert branches to erratum 835769 stubs in the right
5258 places for a particular section. */
5259
5260static bfd_boolean
5261make_branch_to_erratum_835769_stub (struct bfd_hash_entry *gen_entry,
5262 void *in_arg)
5263{
5264 struct elf_aarch64_stub_hash_entry *stub_entry;
5265 struct erratum_835769_branch_to_stub_data *data;
5266 bfd_byte *contents;
5267 unsigned long branch_insn = 0;
5268 bfd_vma veneered_insn_loc, veneer_entry_loc;
5269 bfd_signed_vma branch_offset;
5270 unsigned int target;
5271 bfd *abfd;
5272
5273 stub_entry = (struct elf_aarch64_stub_hash_entry *) gen_entry;
5274 data = (struct erratum_835769_branch_to_stub_data *) in_arg;
5275
5276 if (stub_entry->target_section != data->output_section
5277 || stub_entry->stub_type != aarch64_stub_erratum_835769_veneer)
5278 return TRUE;
5279
5280 contents = data->contents;
5281 veneered_insn_loc = stub_entry->target_section->output_section->vma
5282 + stub_entry->target_section->output_offset
5283 + stub_entry->target_value;
5284 veneer_entry_loc = stub_entry->stub_sec->output_section->vma
5285 + stub_entry->stub_sec->output_offset
5286 + stub_entry->stub_offset;
5287 branch_offset = veneer_entry_loc - veneered_insn_loc;
5288
5289 abfd = stub_entry->target_section->owner;
5290 if (!aarch64_valid_branch_p (veneer_entry_loc, veneered_insn_loc))
4eca0228 5291 _bfd_error_handler
90b6238f 5292 (_("%pB: error: erratum 835769 stub out "
4eca0228 5293 "of range (input file too large)"), abfd);
68fcca92
JW		 5294
5295 target = stub_entry->target_value;
5296 branch_insn = 0x14000000;
5297 branch_offset >>= 2;
5298 branch_offset &= 0x3ffffff;
5299 branch_insn |= branch_offset;
5300 bfd_putl32 (branch_insn, &contents[target]);
5301
5302 return TRUE;
5303}
5304
4106101c
MS		 5305
5306static bfd_boolean
5307_bfd_aarch64_erratum_843419_branch_to_stub (struct bfd_hash_entry *gen_entry,
5308 void *in_arg)
5309{
5310 struct elf_aarch64_stub_hash_entry *stub_entry
5311 = (struct elf_aarch64_stub_hash_entry *) gen_entry;
5312 struct erratum_835769_branch_to_stub_data *data
5313 = (struct erratum_835769_branch_to_stub_data *) in_arg;
5314 struct bfd_link_info *info;
5315 struct elf_aarch64_link_hash_table *htab;
5316 bfd_byte *contents;
5317 asection *section;
5318 bfd *abfd;
5319 bfd_vma place;
5320 uint32_t insn;
5321
5322 info = data->info;
5323 contents = data->contents;
5324 section = data->output_section;
5325
5326 htab = elf_aarch64_hash_table (info);
5327
5328 if (stub_entry->target_section != section
5329 || stub_entry->stub_type != aarch64_stub_erratum_843419_veneer)
5330 return TRUE;
5331
739b5c9c
TC		 5332 BFD_ASSERT (((htab->fix_erratum_843419 & ERRAT_ADRP) && stub_entry->stub_sec)
5333 || (htab->fix_erratum_843419 & ERRAT_ADR));
5334
5335 /* Only update the stub section if we have one. We should always have one if
5336 we're allowed to use the ADRP errata workaround, otherwise it is not
5337 required. */
5338 if (stub_entry->stub_sec)
5339 {
5340 insn = bfd_getl32 (contents + stub_entry->target_value);
5341 bfd_putl32 (insn,
5342 stub_entry->stub_sec->contents + stub_entry->stub_offset);
5343 }
4106101c
MS		 5344
5345 place = (section->output_section->vma + section->output_offset
5346 + stub_entry->adrp_offset);
5347 insn = bfd_getl32 (contents + stub_entry->adrp_offset);
5348
9fca35fc 5349 if (!_bfd_aarch64_adrp_p (insn))
4106101c
MS		 5350 abort ();
5351
5352 bfd_signed_vma imm =
5353 (_bfd_aarch64_sign_extend
5354 ((bfd_vma) _bfd_aarch64_decode_adrp_imm (insn) << 12, 33)
5355 - (place & 0xfff));
5356
739b5c9c 5357 if ((htab->fix_erratum_843419 & ERRAT_ADR)
4106101c
MS		 5358 && (imm >= AARCH64_MIN_ADRP_IMM && imm <= AARCH64_MAX_ADRP_IMM))
5359 {
5360 insn = (_bfd_aarch64_reencode_adr_imm (AARCH64_ADR_OP, imm)
5361 | AARCH64_RT (insn));
5362 bfd_putl32 (insn, contents + stub_entry->adrp_offset);
739b5c9c
TC		 5363 /* Stub is not needed, don't map it out. */
5364 stub_entry->stub_type = aarch64_stub_none;
4106101c 5365 }
739b5c9c 5366 else if (htab->fix_erratum_843419 & ERRAT_ADRP)
4106101c
MS		 5367 {
5368 bfd_vma veneered_insn_loc;
5369 bfd_vma veneer_entry_loc;
5370 bfd_signed_vma branch_offset;
5371 uint32_t branch_insn;
5372
5373 veneered_insn_loc = stub_entry->target_section->output_section->vma
5374 + stub_entry->target_section->output_offset
5375 + stub_entry->target_value;
5376 veneer_entry_loc = stub_entry->stub_sec->output_section->vma
5377 + stub_entry->stub_sec->output_offset
5378 + stub_entry->stub_offset;
5379 branch_offset = veneer_entry_loc - veneered_insn_loc;
5380
5381 abfd = stub_entry->target_section->owner;
5382 if (!aarch64_valid_branch_p (veneer_entry_loc, veneered_insn_loc))
4eca0228 5383 _bfd_error_handler
90b6238f 5384 (_("%pB: error: erratum 843419 stub out "
4106101c
MS		 5385 "of range (input file too large)"), abfd);
5386
5387 branch_insn = 0x14000000;
5388 branch_offset >>= 2;
5389 branch_offset &= 0x3ffffff;
5390 branch_insn |= branch_offset;
5391 bfd_putl32 (branch_insn, contents + stub_entry->target_value);
5392 }
739b5c9c
TC		 5393 else
5394 {
5395 abfd = stub_entry->target_section->owner;
5396 _bfd_error_handler
64672071 5397 (_("%pB: error: erratum 843419 immediate 0x%" BFD_VMA_FMT "x "
739b5c9c
TC		 5398 "out of range for ADR (input file too large) and "
5399 "--fix-cortex-a53-843419=adr used. Run the linker with "
5400 "--fix-cortex-a53-843419=full instead"), abfd, imm);
5401 bfd_set_error (bfd_error_bad_value);
5402 /* This function is called inside a hashtable traversal and the error
5403 handlers called above turn into non-fatal errors. Which means this
5404 case ld returns an exit code 0 and also produces a broken object file.
5405 To prevent this, issue a hard abort. */
5406 BFD_FAIL ();
5407 }
4106101c
MS		 5408 return TRUE;
5409}
5410
5411
68fcca92
JW		 5412static bfd_boolean
5413elfNN_aarch64_write_section (bfd *output_bfd ATTRIBUTE_UNUSED,
5414 struct bfd_link_info *link_info,
5415 asection *sec,
5416 bfd_byte *contents)
5417
5418{
5419 struct elf_aarch64_link_hash_table *globals =
f872121a 5420 elf_aarch64_hash_table (link_info);
68fcca92
JW		 5421
5422 if (globals == NULL)
5423 return FALSE;
5424
5425 /* Fix code to point to erratum 835769 stubs. */
5426 if (globals->fix_erratum_835769)
5427 {
5428 struct erratum_835769_branch_to_stub_data data;
5429
4106101c 5430 data.info = link_info;
68fcca92
JW		 5431 data.output_section = sec;
5432 data.contents = contents;
5433 bfd_hash_traverse (&globals->stub_hash_table,
5434 make_branch_to_erratum_835769_stub, &data);
5435 }
5436
4106101c
MS		 5437 if (globals->fix_erratum_843419)
5438 {
5439 struct erratum_835769_branch_to_stub_data data;
5440
5441 data.info = link_info;
5442 data.output_section = sec;
5443 data.contents = contents;
5444 bfd_hash_traverse (&globals->stub_hash_table,
5445 _bfd_aarch64_erratum_843419_branch_to_stub, &data);
5446 }
5447
68fcca92
JW		 5448 return FALSE;
5449}
5450
2aff25ba
JW		 5451/* Return TRUE if RELOC is a relocation against the base of GOT table. */
5452
5453static bfd_boolean
5454aarch64_relocation_aginst_gp_p (bfd_reloc_code_real_type reloc)
5455{
5456 return (reloc == BFD_RELOC_AARCH64_LD32_GOTPAGE_LO14
5457 || reloc == BFD_RELOC_AARCH64_LD64_GOTPAGE_LO15
5458 || reloc == BFD_RELOC_AARCH64_LD64_GOTOFF_LO15
5459 || reloc == BFD_RELOC_AARCH64_MOVW_GOTOFF_G0_NC
5460 || reloc == BFD_RELOC_AARCH64_MOVW_GOTOFF_G1);
5461}
5462
4e7fbb34
JW		 5463/* Perform a relocation as part of a final link. The input relocation type
5464 should be TLS relaxed. */
5465
a06ea964 5466static bfd_reloc_status_type
cec5225b 5467elfNN_aarch64_final_link_relocate (reloc_howto_type *howto,
a06ea964
NC		 5468 bfd *input_bfd,
5469 bfd *output_bfd,
5470 asection *input_section,
5471 bfd_byte *contents,
5472 Elf_Internal_Rela *rel,
5473 bfd_vma value,
5474 struct bfd_link_info *info,
5475 asection *sym_sec,
5476 struct elf_link_hash_entry *h,
5477 bfd_boolean *unresolved_reloc_p,
5478 bfd_boolean save_addend,
1419bbe5
WN		 5479 bfd_vma *saved_addend,
5480 Elf_Internal_Sym *sym)
a06ea964 5481{
1419bbe5 5482 Elf_Internal_Shdr *symtab_hdr;
a06ea964 5483 unsigned int r_type = howto->type;
a6bb11b2
YZ		 5484 bfd_reloc_code_real_type bfd_r_type
5485 = elfNN_aarch64_bfd_reloc_from_howto (howto);
a06ea964
NC		 5486 unsigned long r_symndx;
5487 bfd_byte *hit_data = contents + rel->r_offset;
96d01d93 5488 bfd_vma place, off, got_entry_addr = 0;
a06ea964 5489 bfd_signed_vma signed_addend;
cec5225b 5490 struct elf_aarch64_link_hash_table *globals;
a06ea964 5491 bfd_boolean weak_undef_p;
ff07562f 5492 bfd_boolean relative_reloc;
b53b1bed 5493 asection *base_got;
ff07562f 5494 bfd_vma orig_value = value;
ddb7fd0f 5495 bfd_boolean resolved_to_zero;
0c1ded8d 5496 bfd_boolean abs_symbol_p;
a06ea964 5497
cec5225b 5498 globals = elf_aarch64_hash_table (info);
a06ea964 5499
1419bbe5
WN		 5500 symtab_hdr = &elf_symtab_hdr (input_bfd);
5501
a06ea964
NC		 5502 BFD_ASSERT (is_aarch64_elf (input_bfd));
5503
cec5225b 5504 r_symndx = ELFNN_R_SYM (rel->r_info);
a06ea964 5505
a06ea964
NC		 5506 place = input_section->output_section->vma
5507 + input_section->output_offset + rel->r_offset;
5508
5509 /* Get addend, accumulating the addend for consecutive relocs
5510 which refer to the same offset. */
5511 signed_addend = saved_addend ? *saved_addend : 0;
5512 signed_addend += rel->r_addend;
5513
5514 weak_undef_p = (h ? h->root.type == bfd_link_hash_undefweak
5515 : bfd_is_und_section (sym_sec));
c691de6a 5516 abs_symbol_p = h != NULL && bfd_is_abs_symbol (&h->root);
0c1ded8d 5517
a6bb11b2 5518
1419bbe5
WN		 5519 /* Since STT_GNU_IFUNC symbol must go through PLT, we handle
5520 it here if it is defined in a non-shared object. */
5521 if (h != NULL
5522 && h->type == STT_GNU_IFUNC
5523 && h->def_regular)
5524 {
5525 asection *plt;
5526 const char *name;
99ad26cb 5527 bfd_vma addend = 0;
1419bbe5 5528
545bc2b3
SN		 5529 if ((input_section->flags & SEC_ALLOC) == 0)
5530 {
f657f8c4
NC		 5531 /* If this is a SHT_NOTE section without SHF_ALLOC, treat
5532 STT_GNU_IFUNC symbol as STT_FUNC. */
5533 if (elf_section_type (input_section) == SHT_NOTE)
5534 goto skip_ifunc;
5535
545bc2b3
SN		 5536 /* Dynamic relocs are not propagated for SEC_DEBUGGING
5537 sections because such sections are not SEC_ALLOC and
5538 thus ld.so will not process them. */
5539 if ((input_section->flags & SEC_DEBUGGING) != 0)
5540 return bfd_reloc_ok;
5541
5542 if (h->root.root.string)
5543 name = h->root.root.string;
5544 else
5545 name = bfd_elf_sym_name (input_bfd, symtab_hdr, sym, NULL);
5546 _bfd_error_handler
5547 /* xgettext:c-format */
2dcf00ce
AM		 5548 (_("%pB(%pA+%#" PRIx64 "): "
5549 "unresolvable %s relocation against symbol `%s'"),
5550 input_bfd, input_section, (uint64_t) rel->r_offset,
5551 howto->name, name);
545bc2b3 5552 bfd_set_error (bfd_error_bad_value);
1d75a8e2 5553 return bfd_reloc_notsupported;
545bc2b3
SN		 5554 }
5555 else if (h->plt.offset == (bfd_vma) -1)
5556 goto bad_ifunc_reloc;
1419bbe5
WN		 5557
5558 /* STT_GNU_IFUNC symbol must go through PLT. */
5559 plt = globals->root.splt ? globals->root.splt : globals->root.iplt;
5560 value = (plt->output_section->vma + plt->output_offset + h->plt.offset);
5561
5562 switch (bfd_r_type)
5563 {
5564 default:
dc1e8a47 5565 bad_ifunc_reloc:
1419bbe5
WN		 5566 if (h->root.root.string)
5567 name = h->root.root.string;
5568 else
5569 name = bfd_elf_sym_name (input_bfd, symtab_hdr, sym,
5570 NULL);
4eca0228 5571 _bfd_error_handler
695344c0 5572 /* xgettext:c-format */
871b3ab2 5573 (_("%pB: relocation %s against STT_GNU_IFUNC "
1419bbe5
WN		 5574 "symbol `%s' isn't handled by %s"), input_bfd,
5575 howto->name, name, __FUNCTION__);
5576 bfd_set_error (bfd_error_bad_value);
1d75a8e2 5577 return bfd_reloc_notsupported;
1419bbe5
WN		 5578
5579 case BFD_RELOC_AARCH64_NN:
5580 if (rel->r_addend != 0)
5581 {
5582 if (h->root.root.string)
5583 name = h->root.root.string;
5584 else
5585 name = bfd_elf_sym_name (input_bfd, symtab_hdr,
5586 sym, NULL);
4eca0228 5587 _bfd_error_handler
695344c0 5588 /* xgettext:c-format */
871b3ab2 5589 (_("%pB: relocation %s against STT_GNU_IFUNC "
2dcf00ce
AM		 5590 "symbol `%s' has non-zero addend: %" PRId64),
5591 input_bfd, howto->name, name, (int64_t) rel->r_addend);
1419bbe5 5592 bfd_set_error (bfd_error_bad_value);
1d75a8e2 5593 return bfd_reloc_notsupported;
1419bbe5
WN		 5594 }
5595
5596 /* Generate dynamic relocation only when there is a
5597 non-GOT reference in a shared object. */
0e1862bb 5598 if (bfd_link_pic (info) && h->non_got_ref)
1419bbe5
WN		 5599 {
5600 Elf_Internal_Rela outrel;
5601 asection *sreloc;
5602
5603 /* Need a dynamic relocation to get the real function
5604 address. */
5605 outrel.r_offset = _bfd_elf_section_offset (output_bfd,
5606 info,
5607 input_section,
5608 rel->r_offset);
5609 if (outrel.r_offset == (bfd_vma) -1
5610 || outrel.r_offset == (bfd_vma) -2)
5611 abort ();
5612
5613 outrel.r_offset += (input_section->output_section->vma
5614 + input_section->output_offset);
5615
5616 if (h->dynindx == -1
5617 || h->forced_local
0e1862bb 5618 || bfd_link_executable (info))
1419bbe5
WN		 5619 {
5620 /* This symbol is resolved locally. */
5621 outrel.r_info = ELFNN_R_INFO (0, AARCH64_R (IRELATIVE));
5622 outrel.r_addend = (h->root.u.def.value
5623 + h->root.u.def.section->output_section->vma
5624 + h->root.u.def.section->output_offset);
5625 }
5626 else
5627 {
5628 outrel.r_info = ELFNN_R_INFO (h->dynindx, r_type);
5629 outrel.r_addend = 0;
5630 }
5631
5632 sreloc = globals->root.irelifunc;
5633 elf_append_rela (output_bfd, sreloc, &outrel);
5634
5635 /* If this reloc is against an external symbol, we
5636 do not want to fiddle with the addend. Otherwise,
5637 we need to include the symbol value so that it
5638 becomes an addend for the dynamic reloc. For an
5639 internal symbol, we have updated addend. */
5640 return bfd_reloc_ok;
5641 }
5642 /* FALLTHROUGH */
1419bbe5 5643 case BFD_RELOC_AARCH64_CALL26:
ce336788 5644 case BFD_RELOC_AARCH64_JUMP26:
652afeef
TC		 5645 value = _bfd_aarch64_elf_resolve_relocation (input_bfd, bfd_r_type,
5646 place, value,
1419bbe5
WN		 5647 signed_addend,
5648 weak_undef_p);
5649 return _bfd_aarch64_elf_put_addend (input_bfd, hit_data, bfd_r_type,
5650 howto, value);
1419bbe5
WN		 5651 case BFD_RELOC_AARCH64_ADR_GOT_PAGE:
5652 case BFD_RELOC_AARCH64_GOT_LD_PREL19:
7018c030 5653 case BFD_RELOC_AARCH64_LD32_GOTPAGE_LO14:
ce336788 5654 case BFD_RELOC_AARCH64_LD32_GOT_LO12_NC:
99ad26cb 5655 case BFD_RELOC_AARCH64_LD64_GOTPAGE_LO15:
dc8008f5 5656 case BFD_RELOC_AARCH64_MOVW_GOTOFF_G0_NC:
74a1bfe1 5657 case BFD_RELOC_AARCH64_MOVW_GOTOFF_G1:
a2e1db00 5658 case BFD_RELOC_AARCH64_LD64_GOTOFF_LO15:
ce336788 5659 case BFD_RELOC_AARCH64_LD64_GOT_LO12_NC:
1419bbe5
WN		 5660 base_got = globals->root.sgot;
5661 off = h->got.offset;
5662
5663 if (base_got == NULL)
5664 abort ();
5665
5666 if (off == (bfd_vma) -1)
5667 {
5668 bfd_vma plt_index;
5669
5670 /* We can't use h->got.offset here to save state, or
5671 even just remember the offset, as finish_dynamic_symbol
5672 would use that as offset into .got. */
5673
5674 if (globals->root.splt != NULL)
5675 {
b1ee0cc4
WN		 5676 plt_index = ((h->plt.offset - globals->plt_header_size) /
5677 globals->plt_entry_size);
1419bbe5
WN		 5678 off = (plt_index + 3) * GOT_ENTRY_SIZE;
5679 base_got = globals->root.sgotplt;
5680 }
5681 else
5682 {
5683 plt_index = h->plt.offset / globals->plt_entry_size;
5684 off = plt_index * GOT_ENTRY_SIZE;
5685 base_got = globals->root.igotplt;
5686 }
5687
5688 if (h->dynindx == -1
5689 || h->forced_local
5690 || info->symbolic)
5691 {
5692 /* This references the local definition. We must
5693 initialize this entry in the global offset table.
5694 Since the offset must always be a multiple of 8,
5695 we use the least significant bit to record
5696 whether we have initialized it already.
5697
5698 When doing a dynamic link, we create a .rela.got
5699 relocation entry to initialize the value. This
5700 is done in the finish_dynamic_symbol routine. */
5701 if ((off & 1) != 0)
5702 off &= ~1;
5703 else
5704 {
5705 bfd_put_NN (output_bfd, value,
5706 base_got->contents + off);
5707 /* Note that this is harmless as -1 | 1 still is -1. */
5708 h->got.offset |= 1;
5709 }
5710 }
5711 value = (base_got->output_section->vma
5712 + base_got->output_offset + off);
5713 }
5714 else
5715 value = aarch64_calculate_got_entry_vma (h, globals, info,
5716 value, output_bfd,
5717 unresolved_reloc_p);
a0becb89 5718
2aff25ba
JW		 5719 if (aarch64_relocation_aginst_gp_p (bfd_r_type))
5720 addend = (globals->root.sgot->output_section->vma
5721 + globals->root.sgot->output_offset);
a0becb89 5722
652afeef
TC		 5723 value = _bfd_aarch64_elf_resolve_relocation (input_bfd, bfd_r_type,
5724 place, value,
99ad26cb 5725 addend, weak_undef_p);
1419bbe5 5726 return _bfd_aarch64_elf_put_addend (input_bfd, hit_data, bfd_r_type, howto, value);
1419bbe5 5727 case BFD_RELOC_AARCH64_ADD_LO12:
ce336788 5728 case BFD_RELOC_AARCH64_ADR_HI21_PCREL:
1419bbe5
WN		 5729 break;
5730 }
5731 }
5732
f657f8c4 5733 skip_ifunc:
ddb7fd0f
L		 5734 resolved_to_zero = (h != NULL
5735 && UNDEFWEAK_NO_DYNAMIC_RELOC (info, h));
5736
a6bb11b2 5737 switch (bfd_r_type)
a06ea964 5738 {
a6bb11b2 5739 case BFD_RELOC_AARCH64_NONE:
0484b454 5740 case BFD_RELOC_AARCH64_TLSDESC_ADD:
a6bb11b2 5741 case BFD_RELOC_AARCH64_TLSDESC_CALL:
0484b454 5742 case BFD_RELOC_AARCH64_TLSDESC_LDR:
a06ea964
NC		 5743 *unresolved_reloc_p = FALSE;
5744 return bfd_reloc_ok;
5745
a6bb11b2 5746 case BFD_RELOC_AARCH64_NN:
a06ea964
NC		 5747
5748 /* When generating a shared object or relocatable executable, these
07d6d2b8
AM		 5749 relocations are copied into the output file to be resolved at
5750 run time. */
6353d82b
JW		 5751 if (((bfd_link_pic (info)
5752 || globals->root.is_relocatable_executable)
5753 && (input_section->flags & SEC_ALLOC)
5754 && (h == NULL
ddb7fd0f
L		 5755 || (ELF_ST_VISIBILITY (h->other) == STV_DEFAULT
5756 && !resolved_to_zero)
6353d82b
JW		 5757 || h->root.type != bfd_link_hash_undefweak))
5758 /* Or we are creating an executable, we may need to keep relocations
5759 for symbols satisfied by a dynamic library if we manage to avoid
5760 copy relocs for the symbol. */
5761 || (ELIMINATE_COPY_RELOCS
5762 && !bfd_link_pic (info)
5763 && h != NULL
5764 && (input_section->flags & SEC_ALLOC)
5765 && h->dynindx != -1
5766 && !h->non_got_ref
5767 && ((h->def_dynamic
5768 && !h->def_regular)
5769 || h->root.type == bfd_link_hash_undefweak
5770 || h->root.type == bfd_link_hash_undefined)))
a06ea964
NC		 5771 {
5772 Elf_Internal_Rela outrel;
5773 bfd_byte *loc;
5774 bfd_boolean skip, relocate;
5775 asection *sreloc;
5776
5777 *unresolved_reloc_p = FALSE;
5778
a06ea964
NC		 5779 skip = FALSE;
5780 relocate = FALSE;
5781
5782 outrel.r_addend = signed_addend;
5783 outrel.r_offset =
5784 _bfd_elf_section_offset (output_bfd, info, input_section,
5785 rel->r_offset);
5786 if (outrel.r_offset == (bfd_vma) - 1)
5787 skip = TRUE;
5788 else if (outrel.r_offset == (bfd_vma) - 2)
5789 {
5790 skip = TRUE;
5791 relocate = TRUE;
5792 }
0c1ded8d
RL		 5793 else if (abs_symbol_p)
5794 {
5795 /* Local absolute symbol. */
5796 skip = (h->forced_local || (h->dynindx == -1));
5797 relocate = skip;
5798 }
a06ea964
NC		 5799
5800 outrel.r_offset += (input_section->output_section->vma
5801 + input_section->output_offset);
5802
5803 if (skip)
5804 memset (&outrel, 0, sizeof outrel);
5805 else if (h != NULL
5806 && h->dynindx != -1
0e1862bb 5807 && (!bfd_link_pic (info)
0c1ded8d 5808 || !(bfd_link_pie (info) || SYMBOLIC_BIND (info, h))
0e1862bb 5809 || !h->def_regular))
cec5225b 5810 outrel.r_info = ELFNN_R_INFO (h->dynindx, r_type);
a06ea964
NC		 5811 else
5812 {
5813 int symbol;
5814
5815 /* On SVR4-ish systems, the dynamic loader cannot
5816 relocate the text and data segments independently,
5817 so the symbol does not matter. */
5818 symbol = 0;
1f56df9d 5819 relocate = globals->no_apply_dynamic_relocs ? FALSE : TRUE;
a6bb11b2 5820 outrel.r_info = ELFNN_R_INFO (symbol, AARCH64_R (RELATIVE));
a06ea964
NC		 5821 outrel.r_addend += value;
5822 }
5823
1419bbe5
WN		 5824 sreloc = elf_section_data (input_section)->sreloc;
5825 if (sreloc == NULL || sreloc->contents == NULL)
5826 return bfd_reloc_notsupported;
5827
5828 loc = sreloc->contents + sreloc->reloc_count++ * RELOC_SIZE (globals);
cec5225b 5829 bfd_elfNN_swap_reloca_out (output_bfd, &outrel, loc);
a06ea964 5830
1419bbe5 5831 if (sreloc->reloc_count * RELOC_SIZE (globals) > sreloc->size)
a06ea964
NC		 5832 {
5833 /* Sanity to check that we have previously allocated
5834 sufficient space in the relocation section for the
5835 number of relocations we actually want to emit. */
5836 abort ();
5837 }
5838
5839 /* If this reloc is against an external symbol, we do not want to
5840 fiddle with the addend. Otherwise, we need to include the symbol
5841 value so that it becomes an addend for the dynamic reloc. */
5842 if (!relocate)
5843 return bfd_reloc_ok;
5844
5845 return _bfd_final_link_relocate (howto, input_bfd, input_section,
5846 contents, rel->r_offset, value,
5847 signed_addend);
5848 }
5849 else
5850 value += signed_addend;
5851 break;
5852
a6bb11b2 5853 case BFD_RELOC_AARCH64_CALL26:
ce336788 5854 case BFD_RELOC_AARCH64_JUMP26:
a06ea964
NC		 5855 {
5856 asection *splt = globals->root.splt;
5857 bfd_boolean via_plt_p =
5858 splt != NULL && h != NULL && h->plt.offset != (bfd_vma) - 1;
5859
5860 /* A call to an undefined weak symbol is converted to a jump to
5861 the next instruction unless a PLT entry will be created.
5862 The jump to the next instruction is optimized as a NOP.
5863 Do the same for local undefined symbols. */
5864 if (weak_undef_p && ! via_plt_p)
5865 {
5866 bfd_putl32 (INSN_NOP, hit_data);
5867 return bfd_reloc_ok;
5868 }
5869
5870 /* If the call goes through a PLT entry, make sure to
5871 check distance to the right destination address. */
5872 if (via_plt_p)
07f9ddfe
JW		 5873 value = (splt->output_section->vma
5874 + splt->output_offset + h->plt.offset);
5875
5876 /* Check if a stub has to be inserted because the destination
5877 is too far away. */
5878 struct elf_aarch64_stub_hash_entry *stub_entry = NULL;
2f340668
JW		 5879
5880 /* If the branch destination is directed to plt stub, "value" will be
5881 the final destination, otherwise we should plus signed_addend, it may
5882 contain non-zero value, for example call to local function symbol
5883 which are turned into "sec_sym + sec_off", and sec_off is kept in
5884 signed_addend. */
5885 if (! aarch64_valid_branch_p (via_plt_p ? value : value + signed_addend,
5886 place))
07f9ddfe
JW		 5887 /* The target is out of reach, so redirect the branch to
5888 the local stub for this function. */
5889 stub_entry = elfNN_aarch64_get_stub_entry (input_section, sym_sec, h,
5890 rel, globals);
5891 if (stub_entry != NULL)
2f340668
JW		 5892 {
5893 value = (stub_entry->stub_offset
5894 + stub_entry->stub_sec->output_offset
5895 + stub_entry->stub_sec->output_section->vma);
5896
5897 /* We have redirected the destination to stub entry address,
5898 so ignore any addend record in the original rela entry. */
5899 signed_addend = 0;
5900 }
a06ea964 5901 }
652afeef
TC		 5902 value = _bfd_aarch64_elf_resolve_relocation (input_bfd, bfd_r_type,
5903 place, value,
caed7120 5904 signed_addend, weak_undef_p);
07f9ddfe 5905 *unresolved_reloc_p = FALSE;
a06ea964
NC		 5906 break;
5907
dcbd20eb
JW		 5908 case BFD_RELOC_AARCH64_16_PCREL:
5909 case BFD_RELOC_AARCH64_32_PCREL:
5910 case BFD_RELOC_AARCH64_64_PCREL:
ce336788
JW		 5911 case BFD_RELOC_AARCH64_ADR_HI21_NC_PCREL:
5912 case BFD_RELOC_AARCH64_ADR_HI21_PCREL:
5913 case BFD_RELOC_AARCH64_ADR_LO21_PCREL:
5914 case BFD_RELOC_AARCH64_LD_LO19_PCREL:
1daf502a
RL		 5915 case BFD_RELOC_AARCH64_MOVW_PREL_G0:
5916 case BFD_RELOC_AARCH64_MOVW_PREL_G0_NC:
5917 case BFD_RELOC_AARCH64_MOVW_PREL_G1:
5918 case BFD_RELOC_AARCH64_MOVW_PREL_G1_NC:
5919 case BFD_RELOC_AARCH64_MOVW_PREL_G2:
5920 case BFD_RELOC_AARCH64_MOVW_PREL_G2_NC:
5921 case BFD_RELOC_AARCH64_MOVW_PREL_G3:
0e1862bb 5922 if (bfd_link_pic (info)
dcbd20eb
JW		 5923 && (input_section->flags & SEC_ALLOC) != 0
5924 && (input_section->flags & SEC_READONLY) != 0
d68f1976 5925 && !SYMBOL_REFERENCES_LOCAL (info, h))
dcbd20eb
JW		 5926 {
5927 int howto_index = bfd_r_type - BFD_RELOC_AARCH64_RELOC_START;
5928
4eca0228 5929 _bfd_error_handler
695344c0 5930 /* xgettext:c-format */
871b3ab2 5931 (_("%pB: relocation %s against symbol `%s' which may bind "
d68f1976
JW		 5932 "externally can not be used when making a shared object; "
5933 "recompile with -fPIC"),
dcbd20eb
JW		 5934 input_bfd, elfNN_aarch64_howto_table[howto_index].name,
5935 h->root.root.string);
5936 bfd_set_error (bfd_error_bad_value);
1d75a8e2 5937 return bfd_reloc_notsupported;
dcbd20eb 5938 }
1a0670f3 5939 /* Fall through. */
dcbd20eb 5940
a6bb11b2 5941 case BFD_RELOC_AARCH64_16:
92d77487
RL		 5942#if ARCH_SIZE == 64
5943 case BFD_RELOC_AARCH64_32:
5944#endif
a6bb11b2 5945 case BFD_RELOC_AARCH64_ADD_LO12:
a6bb11b2 5946 case BFD_RELOC_AARCH64_BRANCH19:
ce336788 5947 case BFD_RELOC_AARCH64_LDST128_LO12:
a6bb11b2
YZ		 5948 case BFD_RELOC_AARCH64_LDST16_LO12:
5949 case BFD_RELOC_AARCH64_LDST32_LO12:
5950 case BFD_RELOC_AARCH64_LDST64_LO12:
ce336788 5951 case BFD_RELOC_AARCH64_LDST8_LO12:
a6bb11b2
YZ		 5952 case BFD_RELOC_AARCH64_MOVW_G0:
5953 case BFD_RELOC_AARCH64_MOVW_G0_NC:
ce336788 5954 case BFD_RELOC_AARCH64_MOVW_G0_S:
a6bb11b2
YZ		 5955 case BFD_RELOC_AARCH64_MOVW_G1:
5956 case BFD_RELOC_AARCH64_MOVW_G1_NC:
ce336788 5957 case BFD_RELOC_AARCH64_MOVW_G1_S:
a6bb11b2
YZ		 5958 case BFD_RELOC_AARCH64_MOVW_G2:
5959 case BFD_RELOC_AARCH64_MOVW_G2_NC:
ce336788 5960 case BFD_RELOC_AARCH64_MOVW_G2_S:
a6bb11b2 5961 case BFD_RELOC_AARCH64_MOVW_G3:
a6bb11b2 5962 case BFD_RELOC_AARCH64_TSTBR14:
652afeef
TC		 5963 value = _bfd_aarch64_elf_resolve_relocation (input_bfd, bfd_r_type,
5964 place, value,
caed7120 5965 signed_addend, weak_undef_p);
a06ea964
NC		 5966 break;
5967
a6bb11b2
YZ		 5968 case BFD_RELOC_AARCH64_ADR_GOT_PAGE:
5969 case BFD_RELOC_AARCH64_GOT_LD_PREL19:
7018c030 5970 case BFD_RELOC_AARCH64_LD32_GOTPAGE_LO14:
ce336788 5971 case BFD_RELOC_AARCH64_LD32_GOT_LO12_NC:
99ad26cb 5972 case BFD_RELOC_AARCH64_LD64_GOTPAGE_LO15:
ce336788 5973 case BFD_RELOC_AARCH64_LD64_GOT_LO12_NC:
2aff25ba
JW		 5974 case BFD_RELOC_AARCH64_LD64_GOTOFF_LO15:
5975 case BFD_RELOC_AARCH64_MOVW_GOTOFF_G0_NC:
5976 case BFD_RELOC_AARCH64_MOVW_GOTOFF_G1:
a06ea964
NC		 5977 if (globals->root.sgot == NULL)
5978 BFD_ASSERT (h != NULL);
5979
ff07562f 5980 relative_reloc = FALSE;
a06ea964
NC		 5981 if (h != NULL)
5982 {
99ad26cb 5983 bfd_vma addend = 0;
ff07562f
JW		 5984
5985 /* If a symbol is not dynamic and is not undefined weak, bind it
5986 locally and generate a RELATIVE relocation under PIC mode.
5987
5988 NOTE: one symbol may be referenced by several relocations, we
5989 should only generate one RELATIVE relocation for that symbol.
5990 Therefore, check GOT offset mark first. */
5991 if (h->dynindx == -1
5992 && !h->forced_local
5993 && h->root.type != bfd_link_hash_undefweak
5994 && bfd_link_pic (info)
5995 && !symbol_got_offset_mark_p (input_bfd, h, r_symndx))
5996 relative_reloc = TRUE;
5997
a06ea964
NC		 5998 value = aarch64_calculate_got_entry_vma (h, globals, info, value,
5999 output_bfd,
6000 unresolved_reloc_p);
ff07562f
JW		 6001 /* Record the GOT entry address which will be used when generating
6002 RELATIVE relocation. */
6003 if (relative_reloc)
6004 got_entry_addr = value;
6005
2aff25ba 6006 if (aarch64_relocation_aginst_gp_p (bfd_r_type))
99ad26cb
JW		 6007 addend = (globals->root.sgot->output_section->vma
6008 + globals->root.sgot->output_offset);
652afeef
TC		 6009 value = _bfd_aarch64_elf_resolve_relocation (input_bfd, bfd_r_type,
6010 place, value,
99ad26cb 6011 addend, weak_undef_p);
a06ea964 6012 }
b53b1bed
JW		 6013 else
6014 {
99ad26cb 6015 bfd_vma addend = 0;
b53b1bed
JW		 6016 struct elf_aarch64_local_symbol *locals
6017 = elf_aarch64_locals (input_bfd);
6018
6019 if (locals == NULL)
6020 {
6021 int howto_index = bfd_r_type - BFD_RELOC_AARCH64_RELOC_START;
4eca0228 6022 _bfd_error_handler
695344c0 6023 /* xgettext:c-format */
90b6238f 6024 (_("%pB: local symbol descriptor table be NULL when applying "
b53b1bed
JW		 6025 "relocation %s against local symbol"),
6026 input_bfd, elfNN_aarch64_howto_table[howto_index].name);
6027 abort ();
6028 }
6029
6030 off = symbol_got_offset (input_bfd, h, r_symndx);
6031 base_got = globals->root.sgot;
ff07562f
JW		 6032 got_entry_addr = (base_got->output_section->vma
6033 + base_got->output_offset + off);
b53b1bed
JW		 6034
6035 if (!symbol_got_offset_mark_p (input_bfd, h, r_symndx))
6036 {
6037 bfd_put_64 (output_bfd, value, base_got->contents + off);
6038
ff07562f
JW		 6039 /* For local symbol, we have done absolute relocation in static
6040 linking stage. While for shared library, we need to update the
6041 content of GOT entry according to the shared object's runtime
6042 base address. So, we need to generate a R_AARCH64_RELATIVE reloc
6043 for dynamic linker. */
0e1862bb 6044 if (bfd_link_pic (info))
ff07562f 6045 relative_reloc = TRUE;
b53b1bed
JW		 6046
6047 symbol_got_offset_mark (input_bfd, h, r_symndx);
6048 }
6049
6050 /* Update the relocation value to GOT entry addr as we have transformed
6051 the direct data access into indirect data access through GOT. */
6052 value = got_entry_addr;
99ad26cb 6053
2aff25ba 6054 if (aarch64_relocation_aginst_gp_p (bfd_r_type))
99ad26cb
JW		 6055 addend = base_got->output_section->vma + base_got->output_offset;
6056
652afeef
TC		 6057 value = _bfd_aarch64_elf_resolve_relocation (input_bfd, bfd_r_type,
6058 place, value,
99ad26cb 6059 addend, weak_undef_p);
b53b1bed 6060 }
ff07562f
JW		 6061
6062 if (relative_reloc)
6063 {
6064 asection *s;
6065 Elf_Internal_Rela outrel;
6066
6067 s = globals->root.srelgot;
6068 if (s == NULL)
6069 abort ();
6070
6071 outrel.r_offset = got_entry_addr;
6072 outrel.r_info = ELFNN_R_INFO (0, AARCH64_R (RELATIVE));
6073 outrel.r_addend = orig_value;
6074 elf_append_rela (output_bfd, s, &outrel);
6075 }
a2e1db00
RL		 6076 break;
6077
ce336788 6078 case BFD_RELOC_AARCH64_TLSGD_ADD_LO12_NC:
a6bb11b2 6079 case BFD_RELOC_AARCH64_TLSGD_ADR_PAGE21:
3c12b054 6080 case BFD_RELOC_AARCH64_TLSGD_ADR_PREL21:
a6bb11b2 6081 case BFD_RELOC_AARCH64_TLSIE_ADR_GOTTPREL_PAGE21:
a6bb11b2 6082 case BFD_RELOC_AARCH64_TLSIE_LD32_GOTTPREL_LO12_NC:
ce336788 6083 case BFD_RELOC_AARCH64_TLSIE_LD64_GOTTPREL_LO12_NC:
043bf05a 6084 case BFD_RELOC_AARCH64_TLSIE_LD_GOTTPREL_PREL19:
73f925cc 6085 case BFD_RELOC_AARCH64_TLSLD_ADD_LO12_NC:
f69e4920 6086 case BFD_RELOC_AARCH64_TLSLD_ADR_PAGE21:
77a69ff8 6087 case BFD_RELOC_AARCH64_TLSLD_ADR_PREL21:
a06ea964
NC		 6088 if (globals->root.sgot == NULL)
6089 return bfd_reloc_notsupported;
6090
6091 value = (symbol_got_offset (input_bfd, h, r_symndx)
6092 + globals->root.sgot->output_section->vma
f44a1f8e 6093 + globals->root.sgot->output_offset);
a06ea964 6094
652afeef
TC		 6095 value = _bfd_aarch64_elf_resolve_relocation (input_bfd, bfd_r_type,
6096 place, value,
caed7120 6097 0, weak_undef_p);
a06ea964
NC		 6098 *unresolved_reloc_p = FALSE;
6099 break;
6100
7ba7cfe4 6101 case BFD_RELOC_AARCH64_TLSGD_MOVW_G0_NC:
94facae3 6102 case BFD_RELOC_AARCH64_TLSGD_MOVW_G1:
3b957e5b
RL		 6103 case BFD_RELOC_AARCH64_TLSIE_MOVW_GOTTPREL_G0_NC:
6104 case BFD_RELOC_AARCH64_TLSIE_MOVW_GOTTPREL_G1:
94facae3
RL		 6105 if (globals->root.sgot == NULL)
6106 return bfd_reloc_notsupported;
6107
6108 value = symbol_got_offset (input_bfd, h, r_symndx);
652afeef
TC		 6109 value = _bfd_aarch64_elf_resolve_relocation (input_bfd, bfd_r_type,
6110 place, value,
94facae3
RL		 6111 0, weak_undef_p);
6112 *unresolved_reloc_p = FALSE;
6113 break;
6114
6ffe9a1b 6115 case BFD_RELOC_AARCH64_TLSLD_ADD_DTPREL_HI12:
40fbed84 6116 case BFD_RELOC_AARCH64_TLSLD_ADD_DTPREL_LO12:
753999c1 6117 case BFD_RELOC_AARCH64_TLSLD_ADD_DTPREL_LO12_NC:
07c9aa07
JW		 6118 case BFD_RELOC_AARCH64_TLSLD_LDST16_DTPREL_LO12:
6119 case BFD_RELOC_AARCH64_TLSLD_LDST16_DTPREL_LO12_NC:
6120 case BFD_RELOC_AARCH64_TLSLD_LDST32_DTPREL_LO12:
6121 case BFD_RELOC_AARCH64_TLSLD_LDST32_DTPREL_LO12_NC:
6122 case BFD_RELOC_AARCH64_TLSLD_LDST64_DTPREL_LO12:
6123 case BFD_RELOC_AARCH64_TLSLD_LDST64_DTPREL_LO12_NC:
6124 case BFD_RELOC_AARCH64_TLSLD_LDST8_DTPREL_LO12:
6125 case BFD_RELOC_AARCH64_TLSLD_LDST8_DTPREL_LO12_NC:
6ffe9a1b
JW		 6126 case BFD_RELOC_AARCH64_TLSLD_MOVW_DTPREL_G0:
6127 case BFD_RELOC_AARCH64_TLSLD_MOVW_DTPREL_G0_NC:
6128 case BFD_RELOC_AARCH64_TLSLD_MOVW_DTPREL_G1:
6129 case BFD_RELOC_AARCH64_TLSLD_MOVW_DTPREL_G1_NC:
6130 case BFD_RELOC_AARCH64_TLSLD_MOVW_DTPREL_G2:
652afeef
TC		 6131 {
6132 if (!(weak_undef_p || elf_hash_table (info)->tls_sec))
6133 {
6134 int howto_index = bfd_r_type - BFD_RELOC_AARCH64_RELOC_START;
6135 _bfd_error_handler
6136 /* xgettext:c-format */
6137 (_("%pB: TLS relocation %s against undefined symbol `%s'"),
6138 input_bfd, elfNN_aarch64_howto_table[howto_index].name,
6139 h->root.root.string);
6140 bfd_set_error (bfd_error_bad_value);
6141 return bfd_reloc_notsupported;
6142 }
6143
6144 bfd_vma def_value
6145 = weak_undef_p ? 0 : signed_addend - dtpoff_base (info);
6146 value = _bfd_aarch64_elf_resolve_relocation (input_bfd, bfd_r_type,
6147 place, value,
6148 def_value, weak_undef_p);
6149 break;
6150 }
40fbed84 6151
a6bb11b2
YZ		 6152 case BFD_RELOC_AARCH64_TLSLE_ADD_TPREL_HI12:
6153 case BFD_RELOC_AARCH64_TLSLE_ADD_TPREL_LO12:
6154 case BFD_RELOC_AARCH64_TLSLE_ADD_TPREL_LO12_NC:
e04ef022
RL		 6155 case BFD_RELOC_AARCH64_TLSLE_LDST16_TPREL_LO12:
6156 case BFD_RELOC_AARCH64_TLSLE_LDST16_TPREL_LO12_NC:
6157 case BFD_RELOC_AARCH64_TLSLE_LDST32_TPREL_LO12:
6158 case BFD_RELOC_AARCH64_TLSLE_LDST32_TPREL_LO12_NC:
6159 case BFD_RELOC_AARCH64_TLSLE_LDST64_TPREL_LO12:
6160 case BFD_RELOC_AARCH64_TLSLE_LDST64_TPREL_LO12_NC:
6161 case BFD_RELOC_AARCH64_TLSLE_LDST8_TPREL_LO12:
6162 case BFD_RELOC_AARCH64_TLSLE_LDST8_TPREL_LO12_NC:
a6bb11b2
YZ		 6163 case BFD_RELOC_AARCH64_TLSLE_MOVW_TPREL_G0:
6164 case BFD_RELOC_AARCH64_TLSLE_MOVW_TPREL_G0_NC:
6165 case BFD_RELOC_AARCH64_TLSLE_MOVW_TPREL_G1:
6166 case BFD_RELOC_AARCH64_TLSLE_MOVW_TPREL_G1_NC:
6167 case BFD_RELOC_AARCH64_TLSLE_MOVW_TPREL_G2:
652afeef
TC		 6168 {
6169 if (!(weak_undef_p || elf_hash_table (info)->tls_sec))
6170 {
6171 int howto_index = bfd_r_type - BFD_RELOC_AARCH64_RELOC_START;
6172 _bfd_error_handler
6173 /* xgettext:c-format */
6174 (_("%pB: TLS relocation %s against undefined symbol `%s'"),
6175 input_bfd, elfNN_aarch64_howto_table[howto_index].name,
6176 h->root.root.string);
6177 bfd_set_error (bfd_error_bad_value);
6178 return bfd_reloc_notsupported;
6179 }
6180
6181 bfd_vma def_value
6182 = weak_undef_p ? 0 : signed_addend - tpoff_base (info);
6183 value = _bfd_aarch64_elf_resolve_relocation (input_bfd, bfd_r_type,
6184 place, value,
6185 def_value, weak_undef_p);
6186 *unresolved_reloc_p = FALSE;
6187 break;
6188 }
a06ea964 6189
f955cccf 6190 case BFD_RELOC_AARCH64_TLSDESC_ADD_LO12:
a6bb11b2 6191 case BFD_RELOC_AARCH64_TLSDESC_ADR_PAGE21:
389b8029 6192 case BFD_RELOC_AARCH64_TLSDESC_ADR_PREL21:
a6bb11b2 6193 case BFD_RELOC_AARCH64_TLSDESC_LD32_LO12_NC:
f955cccf 6194 case BFD_RELOC_AARCH64_TLSDESC_LD64_LO12:
1ada945d 6195 case BFD_RELOC_AARCH64_TLSDESC_LD_PREL19:
a06ea964
NC		 6196 if (globals->root.sgot == NULL)
6197 return bfd_reloc_notsupported;
a06ea964
NC		 6198 value = (symbol_tlsdesc_got_offset (input_bfd, h, r_symndx)
6199 + globals->root.sgotplt->output_section->vma
f44a1f8e 6200 + globals->root.sgotplt->output_offset
a06ea964
NC		 6201 + globals->sgotplt_jump_table_size);
6202
652afeef
TC		 6203 value = _bfd_aarch64_elf_resolve_relocation (input_bfd, bfd_r_type,
6204 place, value,
caed7120 6205 0, weak_undef_p);
a06ea964
NC		 6206 *unresolved_reloc_p = FALSE;
6207 break;
6208
0484b454
RL		 6209 case BFD_RELOC_AARCH64_TLSDESC_OFF_G0_NC:
6210 case BFD_RELOC_AARCH64_TLSDESC_OFF_G1:
6211 if (globals->root.sgot == NULL)
6212 return bfd_reloc_notsupported;
6213
6214 value = (symbol_tlsdesc_got_offset (input_bfd, h, r_symndx)
6215 + globals->root.sgotplt->output_section->vma
6216 + globals->root.sgotplt->output_offset
6217 + globals->sgotplt_jump_table_size);
6218
6219 value -= (globals->root.sgot->output_section->vma
6220 + globals->root.sgot->output_offset);
6221
652afeef
TC		 6222 value = _bfd_aarch64_elf_resolve_relocation (input_bfd, bfd_r_type,
6223 place, value,
0484b454
RL		 6224 0, weak_undef_p);
6225 *unresolved_reloc_p = FALSE;
6226 break;
6227
a06ea964
NC		 6228 default:
6229 return bfd_reloc_notsupported;
6230 }
6231
6232 if (saved_addend)
6233 *saved_addend = value;
6234
6235 /* Only apply the final relocation in a sequence. */
6236 if (save_addend)
6237 return bfd_reloc_continue;
6238
caed7120
YZ		 6239 return _bfd_aarch64_elf_put_addend (input_bfd, hit_data, bfd_r_type,
6240 howto, value);
a06ea964
NC		 6241}
6242
2d0ca824
YN		 6243/* LP64 and ILP32 operates on x- and w-registers respectively.
6244 Next definitions take into account the difference between
6245 corresponding machine codes. R means x-register if the target
6246 arch is LP64, and w-register if the target is ILP32. */
6247
6248#if ARCH_SIZE == 64
6249# define add_R0_R0 (0x91000000)
6250# define add_R0_R0_R1 (0x8b000020)
6251# define add_R0_R1 (0x91400020)
6252# define ldr_R0 (0x58000000)
6253# define ldr_R0_mask(i) (i & 0xffffffe0)
6254# define ldr_R0_x0 (0xf9400000)
6255# define ldr_hw_R0 (0xf2a00000)
6256# define movk_R0 (0xf2800000)
6257# define movz_R0 (0xd2a00000)
6258# define movz_hw_R0 (0xd2c00000)
6259#else /*ARCH_SIZE == 32 */
6260# define add_R0_R0 (0x11000000)
6261# define add_R0_R0_R1 (0x0b000020)
6262# define add_R0_R1 (0x11400020)
6263# define ldr_R0 (0x18000000)
6264# define ldr_R0_mask(i) (i & 0xbfffffe0)
6265# define ldr_R0_x0 (0xb9400000)
6266# define ldr_hw_R0 (0x72a00000)
6267# define movk_R0 (0x72800000)
6268# define movz_R0 (0x52a00000)
6269# define movz_hw_R0 (0x52c00000)
6270#endif
6271
9fca35fc
TC		 6272/* Structure to hold payload for _bfd_aarch64_erratum_843419_clear_stub,
6273 it is used to identify the stub information to reset. */
6274
6275struct erratum_843419_branch_to_stub_clear_data
6276{
6277 bfd_vma adrp_offset;
6278 asection *output_section;
6279};
6280
6281/* Clear the erratum information for GEN_ENTRY if the ADRP_OFFSET and
6282 section inside IN_ARG matches. The clearing is done by setting the
6283 stub_type to none. */
6284
6285static bfd_boolean
6286_bfd_aarch64_erratum_843419_clear_stub (struct bfd_hash_entry *gen_entry,
6287 void *in_arg)
6288{
6289 struct elf_aarch64_stub_hash_entry *stub_entry
6290 = (struct elf_aarch64_stub_hash_entry *) gen_entry;
6291 struct erratum_843419_branch_to_stub_clear_data *data
6292 = (struct erratum_843419_branch_to_stub_clear_data *) in_arg;
6293
6294 if (stub_entry->target_section != data->output_section
6295 || stub_entry->stub_type != aarch64_stub_erratum_843419_veneer
6296 || stub_entry->adrp_offset != data->adrp_offset)
6297 return TRUE;
6298
6299 /* Change the stub type instead of removing the entry, removing from the hash
6300 table would be slower and we have already reserved the memory for the entry
6301 so there wouldn't be much gain. Changing the stub also keeps around a
6302 record of what was there before. */
6303 stub_entry->stub_type = aarch64_stub_none;
6304
6305 /* We're done and there could have been only one matching stub at that
6306 particular offset, so abort further traversal. */
6307 return FALSE;
6308}
6309
6310/* TLS Relaxations may relax an adrp sequence that matches the erratum 843419
6311 sequence. In this case the erratum no longer applies and we need to remove
6312 the entry from the pending stub generation. This clears matching adrp insn
6313 at ADRP_OFFSET in INPUT_SECTION in the stub table defined in GLOBALS. */
6314
6315static void
6316clear_erratum_843419_entry (struct elf_aarch64_link_hash_table *globals,
6317 bfd_vma adrp_offset, asection *input_section)
6318{
739b5c9c 6319 if (globals->fix_erratum_843419 & ERRAT_ADRP)
9fca35fc
TC		 6320 {
6321 struct erratum_843419_branch_to_stub_clear_data data;
6322 data.adrp_offset = adrp_offset;
6323 data.output_section = input_section;
6324
6325 bfd_hash_traverse (&globals->stub_hash_table,
6326 _bfd_aarch64_erratum_843419_clear_stub, &data);
6327 }
6328}
6329
a06ea964
NC		 6330/* Handle TLS relaxations. Relaxing is possible for symbols that use
6331 R_AARCH64_TLSDESC_ADR_{PAGE, LD64_LO12_NC, ADD_LO12_NC} during a static
6332 link.
6333
6334 Return bfd_reloc_ok if we're done, bfd_reloc_continue if the caller
6335 is to then call final_link_relocate. Return other values in the
6336 case of error. */
6337
6338static bfd_reloc_status_type
cec5225b 6339elfNN_aarch64_tls_relax (struct elf_aarch64_link_hash_table *globals,
9fca35fc
TC		 6340 bfd *input_bfd, asection *input_section,
6341 bfd_byte *contents, Elf_Internal_Rela *rel,
6342 struct elf_link_hash_entry *h)
a06ea964
NC		 6343{
6344 bfd_boolean is_local = h == NULL;
cec5225b 6345 unsigned int r_type = ELFNN_R_TYPE (rel->r_info);
a06ea964
NC		 6346 unsigned long insn;
6347
6348 BFD_ASSERT (globals && input_bfd && contents && rel);
6349
0aa13fee 6350 switch (elfNN_aarch64_bfd_reloc_from_type (input_bfd, r_type))
a06ea964 6351 {
a6bb11b2 6352 case BFD_RELOC_AARCH64_TLSDESC_ADR_PAGE21:
ce336788 6353 case BFD_RELOC_AARCH64_TLSGD_ADR_PAGE21:
a06ea964
NC		 6354 if (is_local)
6355 {
6356 /* GD->LE relaxation:
2d0ca824 6357 adrp x0, :tlsgd:var => movz R0, :tprel_g1:var
a06ea964 6358 or
2d0ca824
YN		 6359 adrp x0, :tlsdesc:var => movz R0, :tprel_g1:var
6360
6361 Where R is x for LP64, and w for ILP32. */
6362 bfd_putl32 (movz_R0, contents + rel->r_offset);
9fca35fc
TC		 6363 /* We have relaxed the adrp into a mov, we may have to clear any
6364 pending erratum fixes. */
6365 clear_erratum_843419_entry (globals, rel->r_offset, input_section);
a06ea964
NC		 6366 return bfd_reloc_continue;
6367 }
6368 else
6369 {
6370 /* GD->IE relaxation:
6371 adrp x0, :tlsgd:var => adrp x0, :gottprel:var
6372 or
6373 adrp x0, :tlsdesc:var => adrp x0, :gottprel:var
6374 */
a06ea964
NC		 6375 return bfd_reloc_continue;
6376 }
6377
389b8029
MS		 6378 case BFD_RELOC_AARCH64_TLSDESC_ADR_PREL21:
6379 BFD_ASSERT (0);
6380 break;
6381
1ada945d
MS		 6382 case BFD_RELOC_AARCH64_TLSDESC_LD_PREL19:
6383 if (is_local)
6384 {
6385 /* Tiny TLSDESC->LE relaxation:
07d6d2b8
AM		 6386 ldr x1, :tlsdesc:var => movz R0, #:tprel_g1:var
6387 adr x0, :tlsdesc:var => movk R0, #:tprel_g0_nc:var
1ada945d 6388 .tlsdesccall var
07d6d2b8 6389 blr x1 => nop
2d0ca824
YN		 6390
6391 Where R is x for LP64, and w for ILP32. */
1ada945d
MS		 6392 BFD_ASSERT (ELFNN_R_TYPE (rel[1].r_info) == AARCH64_R (TLSDESC_ADR_PREL21));
6393 BFD_ASSERT (ELFNN_R_TYPE (rel[2].r_info) == AARCH64_R (TLSDESC_CALL));
6394
6395 rel[1].r_info = ELFNN_R_INFO (ELFNN_R_SYM (rel->r_info),
6396 AARCH64_R (TLSLE_MOVW_TPREL_G0_NC));
6397 rel[2].r_info = ELFNN_R_INFO (STN_UNDEF, R_AARCH64_NONE);
6398
2d0ca824
YN		 6399 bfd_putl32 (movz_R0, contents + rel->r_offset);
6400 bfd_putl32 (movk_R0, contents + rel->r_offset + 4);
1ada945d
MS		 6401 bfd_putl32 (INSN_NOP, contents + rel->r_offset + 8);
6402 return bfd_reloc_continue;
6403 }
6404 else
6405 {
6406 /* Tiny TLSDESC->IE relaxation:
07d6d2b8
AM		 6407 ldr x1, :tlsdesc:var => ldr x0, :gottprel:var
6408 adr x0, :tlsdesc:var => nop
1ada945d 6409 .tlsdesccall var
07d6d2b8 6410 blr x1 => nop
1ada945d
MS		 6411 */
6412 BFD_ASSERT (ELFNN_R_TYPE (rel[1].r_info) == AARCH64_R (TLSDESC_ADR_PREL21));
6413 BFD_ASSERT (ELFNN_R_TYPE (rel[2].r_info) == AARCH64_R (TLSDESC_CALL));
6414
6415 rel[1].r_info = ELFNN_R_INFO (STN_UNDEF, R_AARCH64_NONE);
6416 rel[2].r_info = ELFNN_R_INFO (STN_UNDEF, R_AARCH64_NONE);
6417
2d0ca824 6418 bfd_putl32 (ldr_R0, contents + rel->r_offset);
1ada945d
MS		 6419 bfd_putl32 (INSN_NOP, contents + rel->r_offset + 4);
6420 bfd_putl32 (INSN_NOP, contents + rel->r_offset + 8);
6421 return bfd_reloc_continue;
6422 }
6423
3c12b054
MS		 6424 case BFD_RELOC_AARCH64_TLSGD_ADR_PREL21:
6425 if (is_local)
6426 {
6427 /* Tiny GD->LE relaxation:
07d6d2b8
AM		 6428 adr x0, :tlsgd:var => mrs x1, tpidr_el0
6429 bl __tls_get_addr => add R0, R1, #:tprel_hi12:x, lsl #12
6430 nop => add R0, R0, #:tprel_lo12_nc:x
2d0ca824
YN		 6431
6432 Where R is x for LP64, and x for Ilp32. */
3c12b054
MS		 6433
6434 /* First kill the tls_get_addr reloc on the bl instruction. */
6435 BFD_ASSERT (rel->r_offset + 4 == rel[1].r_offset);
6436
6437 bfd_putl32 (0xd53bd041, contents + rel->r_offset + 0);
2d0ca824
YN		 6438 bfd_putl32 (add_R0_R1, contents + rel->r_offset + 4);
6439 bfd_putl32 (add_R0_R0, contents + rel->r_offset + 8);
3c12b054
MS		 6440
6441 rel[1].r_info = ELFNN_R_INFO (ELFNN_R_SYM (rel->r_info),
6442 AARCH64_R (TLSLE_ADD_TPREL_LO12_NC));
6443 rel[1].r_offset = rel->r_offset + 8;
6444
6445 /* Move the current relocation to the second instruction in
6446 the sequence. */
6447 rel->r_offset += 4;
6448 rel->r_info = ELFNN_R_INFO (ELFNN_R_SYM (rel->r_info),
6449 AARCH64_R (TLSLE_ADD_TPREL_HI12));
6450 return bfd_reloc_continue;
6451 }
6452 else
6453 {
6454 /* Tiny GD->IE relaxation:
07d6d2b8
AM		 6455 adr x0, :tlsgd:var => ldr R0, :gottprel:var
6456 bl __tls_get_addr => mrs x1, tpidr_el0
6457 nop => add R0, R0, R1
2d0ca824
YN		 6458
6459 Where R is x for LP64, and w for Ilp32. */
3c12b054
MS		 6460
6461 /* First kill the tls_get_addr reloc on the bl instruction. */
6462 BFD_ASSERT (rel->r_offset + 4 == rel[1].r_offset);
6463 rel[1].r_info = ELFNN_R_INFO (STN_UNDEF, R_AARCH64_NONE);
6464
2d0ca824 6465 bfd_putl32 (ldr_R0, contents + rel->r_offset);
3c12b054 6466 bfd_putl32 (0xd53bd041, contents + rel->r_offset + 4);
2d0ca824 6467 bfd_putl32 (add_R0_R0_R1, contents + rel->r_offset + 8);
3c12b054
MS		 6468 return bfd_reloc_continue;
6469 }
6470
ac734732
RL		 6471#if ARCH_SIZE == 64
6472 case BFD_RELOC_AARCH64_TLSGD_MOVW_G1:
6473 BFD_ASSERT (ELFNN_R_TYPE (rel[1].r_info) == AARCH64_R (TLSGD_MOVW_G0_NC));
6474 BFD_ASSERT (rel->r_offset + 12 == rel[2].r_offset);
6475 BFD_ASSERT (ELFNN_R_TYPE (rel[2].r_info) == AARCH64_R (CALL26));
6476
6477 if (is_local)
6478 {
6479 /* Large GD->LE relaxation:
07d6d2b8 6480 movz x0, #:tlsgd_g1:var => movz x0, #:tprel_g2:var, lsl #32
ac734732 6481 movk x0, #:tlsgd_g0_nc:var => movk x0, #:tprel_g1_nc:var, lsl #16
07d6d2b8
AM		 6482 add x0, gp, x0 => movk x0, #:tprel_g0_nc:var
6483 bl __tls_get_addr => mrs x1, tpidr_el0
6484 nop => add x0, x0, x1
ac734732
RL		 6485 */
6486 rel[2].r_info = ELFNN_R_INFO (ELFNN_R_SYM (rel->r_info),
6487 AARCH64_R (TLSLE_MOVW_TPREL_G0_NC));
6488 rel[2].r_offset = rel->r_offset + 8;
6489
2d0ca824
YN		 6490 bfd_putl32 (movz_hw_R0, contents + rel->r_offset + 0);
6491 bfd_putl32 (ldr_hw_R0, contents + rel->r_offset + 4);
6492 bfd_putl32 (movk_R0, contents + rel->r_offset + 8);
ac734732 6493 bfd_putl32 (0xd53bd041, contents + rel->r_offset + 12);
2d0ca824 6494 bfd_putl32 (add_R0_R0_R1, contents + rel->r_offset + 16);
ac734732
RL		 6495 }
6496 else
6497 {
6498 /* Large GD->IE relaxation:
07d6d2b8 6499 movz x0, #:tlsgd_g1:var => movz x0, #:gottprel_g1:var, lsl #16
ac734732 6500 movk x0, #:tlsgd_g0_nc:var => movk x0, #:gottprel_g0_nc:var
07d6d2b8
AM		 6501 add x0, gp, x0 => ldr x0, [gp, x0]
6502 bl __tls_get_addr => mrs x1, tpidr_el0
6503 nop => add x0, x0, x1
ac734732
RL		 6504 */
6505 rel[2].r_info = ELFNN_R_INFO (STN_UNDEF, R_AARCH64_NONE);
6506 bfd_putl32 (0xd2a80000, contents + rel->r_offset + 0);
2d0ca824 6507 bfd_putl32 (ldr_R0, contents + rel->r_offset + 8);
ac734732 6508 bfd_putl32 (0xd53bd041, contents + rel->r_offset + 12);
2d0ca824 6509 bfd_putl32 (add_R0_R0_R1, contents + rel->r_offset + 16);
ac734732
RL		 6510 }
6511 return bfd_reloc_continue;
6512
6513 case BFD_RELOC_AARCH64_TLSGD_MOVW_G0_NC:
6514 return bfd_reloc_continue;
6515#endif
6516
043bf05a
MS		 6517 case BFD_RELOC_AARCH64_TLSIE_LD_GOTTPREL_PREL19:
6518 return bfd_reloc_continue;
6519
a6bb11b2 6520 case BFD_RELOC_AARCH64_TLSDESC_LDNN_LO12_NC:
a06ea964
NC		 6521 if (is_local)
6522 {
6523 /* GD->LE relaxation:
6524 ldr xd, [x0, #:tlsdesc_lo12:var] => movk x0, :tprel_g0_nc:var
2d0ca824
YN		 6525
6526 Where R is x for lp64 mode, and w for ILP32 mode. */
6527 bfd_putl32 (movk_R0, contents + rel->r_offset);
a06ea964
NC		 6528 return bfd_reloc_continue;
6529 }
6530 else
6531 {
6532 /* GD->IE relaxation:
2d0ca824
YN		 6533 ldr xd, [x0, #:tlsdesc_lo12:var] => ldr R0, [x0, #:gottprel_lo12:var]
6534
6535 Where R is x for lp64 mode, and w for ILP32 mode. */
a06ea964 6536 insn = bfd_getl32 (contents + rel->r_offset);
2d0ca824 6537 bfd_putl32 (ldr_R0_mask (insn), contents + rel->r_offset);
a06ea964
NC		 6538 return bfd_reloc_continue;
6539 }
6540
a6bb11b2 6541 case BFD_RELOC_AARCH64_TLSGD_ADD_LO12_NC:
a06ea964
NC		 6542 if (is_local)
6543 {
6544 /* GD->LE relaxation
07d6d2b8
AM		 6545 add x0, #:tlsgd_lo12:var => movk R0, :tprel_g0_nc:var
6546 bl __tls_get_addr => mrs x1, tpidr_el0
6547 nop => add R0, R1, R0
2d0ca824
YN		 6548
6549 Where R is x for lp64 mode, and w for ILP32 mode. */
a06ea964
NC		 6550
6551 /* First kill the tls_get_addr reloc on the bl instruction. */
6552 BFD_ASSERT (rel->r_offset + 4 == rel[1].r_offset);
cec5225b 6553 rel[1].r_info = ELFNN_R_INFO (STN_UNDEF, R_AARCH64_NONE);
a06ea964 6554
2d0ca824 6555 bfd_putl32 (movk_R0, contents + rel->r_offset);
a06ea964 6556 bfd_putl32 (0xd53bd041, contents + rel->r_offset + 4);
2d0ca824 6557 bfd_putl32 (add_R0_R0_R1, contents + rel->r_offset + 8);
a06ea964
NC		 6558 return bfd_reloc_continue;
6559 }
6560 else
6561 {
6562 /* GD->IE relaxation
07d6d2b8
AM		 6563 ADD x0, #:tlsgd_lo12:var => ldr R0, [x0, #:gottprel_lo12:var]
6564 BL __tls_get_addr => mrs x1, tpidr_el0
a06ea964 6565 R_AARCH64_CALL26
07d6d2b8 6566 NOP => add R0, R1, R0
5cd1d8bc
YN		 6567
6568 Where R is x for lp64 mode, and w for ilp32 mode. */
a06ea964 6569
a6bb11b2 6570 BFD_ASSERT (ELFNN_R_TYPE (rel[1].r_info) == AARCH64_R (CALL26));
a06ea964
NC		 6571
6572 /* Remove the relocation on the BL instruction. */
cec5225b 6573 rel[1].r_info = ELFNN_R_INFO (STN_UNDEF, R_AARCH64_NONE);
a06ea964 6574
a06ea964
NC		 6575 /* We choose to fixup the BL and NOP instructions using the
6576 offset from the second relocation to allow flexibility in
6577 scheduling instructions between the ADD and BL. */
2d0ca824 6578 bfd_putl32 (ldr_R0_x0, contents + rel->r_offset);
5cd1d8bc 6579 bfd_putl32 (0xd53bd041, contents + rel[1].r_offset);
2d0ca824 6580 bfd_putl32 (add_R0_R0_R1, contents + rel[1].r_offset + 4);
a06ea964
NC		 6581 return bfd_reloc_continue;
6582 }
6583
0484b454 6584 case BFD_RELOC_AARCH64_TLSDESC_ADD:
f955cccf 6585 case BFD_RELOC_AARCH64_TLSDESC_ADD_LO12:
a6bb11b2 6586 case BFD_RELOC_AARCH64_TLSDESC_CALL:
a06ea964 6587 /* GD->IE/LE relaxation:
07d6d2b8
AM		 6588 add x0, x0, #:tlsdesc_lo12:var => nop
6589 blr xd => nop
a06ea964
NC		 6590 */
6591 bfd_putl32 (INSN_NOP, contents + rel->r_offset);
6592 return bfd_reloc_ok;
6593
0484b454
RL		 6594 case BFD_RELOC_AARCH64_TLSDESC_LDR:
6595 if (is_local)
6596 {
6597 /* GD->LE relaxation:
2d0ca824
YN		 6598 ldr xd, [gp, xn] => movk R0, #:tprel_g0_nc:var
6599
6600 Where R is x for lp64 mode, and w for ILP32 mode. */
6601 bfd_putl32 (movk_R0, contents + rel->r_offset);
0484b454
RL		 6602 return bfd_reloc_continue;
6603 }
6604 else
6605 {
6606 /* GD->IE relaxation:
2d0ca824
YN		 6607 ldr xd, [gp, xn] => ldr R0, [gp, xn]
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 (ldr_R0_mask (insn), contents + rel->r_offset);
0484b454
RL		 6612 return bfd_reloc_ok;
6613 }
6614
6615 case BFD_RELOC_AARCH64_TLSDESC_OFF_G0_NC:
6616 /* GD->LE relaxation:
2d0ca824 6617 movk xd, #:tlsdesc_off_g0_nc:var => movk R0, #:tprel_g1_nc:var, lsl #16
0484b454 6618 GD->IE relaxation:
2d0ca824
YN		 6619 movk xd, #:tlsdesc_off_g0_nc:var => movk Rd, #:gottprel_g0_nc:var
6620
6621 Where R is x for lp64 mode, and w for ILP32 mode. */
0484b454 6622 if (is_local)
2d0ca824 6623 bfd_putl32 (ldr_hw_R0, contents + rel->r_offset);
0484b454
RL		 6624 return bfd_reloc_continue;
6625
6626 case BFD_RELOC_AARCH64_TLSDESC_OFF_G1:
6627 if (is_local)
6628 {
6629 /* GD->LE relaxation:
2d0ca824
YN		 6630 movz xd, #:tlsdesc_off_g1:var => movz R0, #:tprel_g2:var, lsl #32
6631
6632 Where R is x for lp64 mode, and w for ILP32 mode. */
6633 bfd_putl32 (movz_hw_R0, contents + rel->r_offset);
0484b454
RL		 6634 return bfd_reloc_continue;
6635 }
6636 else
6637 {
6638 /* GD->IE relaxation:
2d0ca824
YN		 6639 movz xd, #:tlsdesc_off_g1:var => movz Rd, #:gottprel_g1:var, lsl #16
6640
6641 Where R is x for lp64 mode, and w for ILP32 mode. */
0484b454 6642 insn = bfd_getl32 (contents + rel->r_offset);
2d0ca824 6643 bfd_putl32 (movz_R0 | (insn & 0x1f), contents + rel->r_offset);
0484b454
RL		 6644 return bfd_reloc_continue;
6645 }
6646
a6bb11b2 6647 case BFD_RELOC_AARCH64_TLSIE_ADR_GOTTPREL_PAGE21:
a06ea964 6648 /* IE->LE relaxation:
07d6d2b8 6649 adrp xd, :gottprel:var => movz Rd, :tprel_g1:var
2d0ca824
YN		 6650
6651 Where R is x for lp64 mode, and w for ILP32 mode. */
a06ea964
NC		 6652 if (is_local)
6653 {
6654 insn = bfd_getl32 (contents + rel->r_offset);
2d0ca824 6655 bfd_putl32 (movz_R0 | (insn & 0x1f), contents + rel->r_offset);
9fca35fc
TC		 6656 /* We have relaxed the adrp into a mov, we may have to clear any
6657 pending erratum fixes. */
6658 clear_erratum_843419_entry (globals, rel->r_offset, input_section);
a06ea964
NC		 6659 }
6660 return bfd_reloc_continue;
6661
a6bb11b2 6662 case BFD_RELOC_AARCH64_TLSIE_LDNN_GOTTPREL_LO12_NC:
a06ea964 6663 /* IE->LE relaxation:
07d6d2b8 6664 ldr xd, [xm, #:gottprel_lo12:var] => movk Rd, :tprel_g0_nc:var
2d0ca824
YN		 6665
6666 Where R is x for lp64 mode, and w for ILP32 mode. */
a06ea964
NC		 6667 if (is_local)
6668 {
6669 insn = bfd_getl32 (contents + rel->r_offset);
2d0ca824 6670 bfd_putl32 (movk_R0 | (insn & 0x1f), contents + rel->r_offset);
a06ea964
NC		 6671 }
6672 return bfd_reloc_continue;
6673
259364ad
JW		 6674 case BFD_RELOC_AARCH64_TLSLD_ADR_PREL21:
6675 /* LD->LE relaxation (tiny):
6676 adr x0, :tlsldm:x => mrs x0, tpidr_el0
c1fc2d7e
YN		 6677 bl __tls_get_addr => add R0, R0, TCB_SIZE
6678
6679 Where R is x for lp64 mode, and w for ilp32 mode. */
259364ad
JW		 6680 if (is_local)
6681 {
6682 BFD_ASSERT (rel->r_offset + 4 == rel[1].r_offset);
6683 BFD_ASSERT (ELFNN_R_TYPE (rel[1].r_info) == AARCH64_R (CALL26));
6684 /* No need of CALL26 relocation for tls_get_addr. */
6685 rel[1].r_info = ELFNN_R_INFO (STN_UNDEF, R_AARCH64_NONE);
6686 bfd_putl32 (0xd53bd040, contents + rel->r_offset + 0);
2d0ca824
YN		 6687 bfd_putl32 (add_R0_R0 | (TCB_SIZE << 10),
6688 contents + rel->r_offset + 4);
259364ad
JW		 6689 return bfd_reloc_ok;
6690 }
6691 return bfd_reloc_continue;
6692
6693 case BFD_RELOC_AARCH64_TLSLD_ADR_PAGE21:
6694 /* LD->LE relaxation (small):
6695 adrp x0, :tlsldm:x => mrs x0, tpidr_el0
6696 */
6697 if (is_local)
6698 {
6699 bfd_putl32 (0xd53bd040, contents + rel->r_offset);
6700 return bfd_reloc_ok;
6701 }
6702 return bfd_reloc_continue;
6703
6704 case BFD_RELOC_AARCH64_TLSLD_ADD_LO12_NC:
6705 /* LD->LE relaxation (small):
c1fc2d7e 6706 add x0, #:tlsldm_lo12:x => add R0, R0, TCB_SIZE
259364ad 6707 bl __tls_get_addr => nop
c1fc2d7e
YN		 6708
6709 Where R is x for lp64 mode, and w for ilp32 mode. */
259364ad
JW		 6710 if (is_local)
6711 {
6712 BFD_ASSERT (rel->r_offset + 4 == rel[1].r_offset);
6713 BFD_ASSERT (ELFNN_R_TYPE (rel[1].r_info) == AARCH64_R (CALL26));
6714 /* No need of CALL26 relocation for tls_get_addr. */
6715 rel[1].r_info = ELFNN_R_INFO (STN_UNDEF, R_AARCH64_NONE);
2d0ca824
YN		 6716 bfd_putl32 (add_R0_R0 | (TCB_SIZE << 10),
6717 contents + rel->r_offset + 0);
c1fc2d7e 6718 bfd_putl32 (INSN_NOP, contents + rel->r_offset + 4);
259364ad
JW		 6719 return bfd_reloc_ok;
6720 }
6721 return bfd_reloc_continue;
6722
a06ea964
NC		 6723 default:
6724 return bfd_reloc_continue;
6725 }
6726
6727 return bfd_reloc_ok;
6728}
6729
6730/* Relocate an AArch64 ELF section. */
6731
6732static bfd_boolean
cec5225b 6733elfNN_aarch64_relocate_section (bfd *output_bfd,
a06ea964
NC		 6734 struct bfd_link_info *info,
6735 bfd *input_bfd,
6736 asection *input_section,
6737 bfd_byte *contents,
6738 Elf_Internal_Rela *relocs,
6739 Elf_Internal_Sym *local_syms,
6740 asection **local_sections)
6741{
6742 Elf_Internal_Shdr *symtab_hdr;
6743 struct elf_link_hash_entry **sym_hashes;
6744 Elf_Internal_Rela *rel;
6745 Elf_Internal_Rela *relend;
6746 const char *name;
cec5225b 6747 struct elf_aarch64_link_hash_table *globals;
a06ea964
NC		 6748 bfd_boolean save_addend = FALSE;
6749 bfd_vma addend = 0;
6750
cec5225b 6751 globals = elf_aarch64_hash_table (info);
a06ea964
NC		 6752
6753 symtab_hdr = &elf_symtab_hdr (input_bfd);
6754 sym_hashes = elf_sym_hashes (input_bfd);
6755
6756 rel = relocs;
6757 relend = relocs + input_section->reloc_count;
6758 for (; rel < relend; rel++)
6759 {
6760 unsigned int r_type;
a6bb11b2
YZ		 6761 bfd_reloc_code_real_type bfd_r_type;
6762 bfd_reloc_code_real_type relaxed_bfd_r_type;
a06ea964
NC		 6763 reloc_howto_type *howto;
6764 unsigned long r_symndx;
6765 Elf_Internal_Sym *sym;
6766 asection *sec;
6767 struct elf_link_hash_entry *h;
6768 bfd_vma relocation;
6769 bfd_reloc_status_type r;
6770 arelent bfd_reloc;
6771 char sym_type;
6772 bfd_boolean unresolved_reloc = FALSE;
6773 char *error_message = NULL;
6774
cec5225b
YZ		 6775 r_symndx = ELFNN_R_SYM (rel->r_info);
6776 r_type = ELFNN_R_TYPE (rel->r_info);
a06ea964 6777
0aa13fee
AM		 6778 bfd_reloc.howto = elfNN_aarch64_howto_from_type (input_bfd, r_type);
6779 howto = bfd_reloc.howto;
a06ea964 6780
7fcfd62d 6781 if (howto == NULL)
47aeb64c
NC		 6782 return _bfd_unrecognized_reloc (input_bfd, input_section, r_type);
6783
a6bb11b2 6784 bfd_r_type = elfNN_aarch64_bfd_reloc_from_howto (howto);
7fcfd62d 6785
a06ea964
NC		 6786 h = NULL;
6787 sym = NULL;
6788 sec = NULL;
6789
6790 if (r_symndx < symtab_hdr->sh_info)
6791 {
6792 sym = local_syms + r_symndx;
cec5225b 6793 sym_type = ELFNN_ST_TYPE (sym->st_info);
a06ea964
NC		 6794 sec = local_sections[r_symndx];
6795
6796 /* An object file might have a reference to a local
6797 undefined symbol. This is a daft object file, but we
6798 should at least do something about it. */
6799 if (r_type != R_AARCH64_NONE && r_type != R_AARCH64_NULL
6800 && bfd_is_und_section (sec)
6801 && ELF_ST_BIND (sym->st_info) != STB_WEAK)
1a72702b
AM		 6802 (*info->callbacks->undefined_symbol)
6803 (info, bfd_elf_string_from_elf_section
6804 (input_bfd, symtab_hdr->sh_link, sym->st_name),
6805 input_bfd, input_section, rel->r_offset, TRUE);
a06ea964 6806
a06ea964 6807 relocation = _bfd_elf_rela_local_sym (output_bfd, sym, &sec, rel);
1419bbe5
WN		 6808
6809 /* Relocate against local STT_GNU_IFUNC symbol. */
0e1862bb 6810 if (!bfd_link_relocatable (info)
1419bbe5
WN		 6811 && ELF_ST_TYPE (sym->st_info) == STT_GNU_IFUNC)
6812 {
6813 h = elfNN_aarch64_get_local_sym_hash (globals, input_bfd,
6814 rel, FALSE);
6815 if (h == NULL)
6816 abort ();
6817
6818 /* Set STT_GNU_IFUNC symbol value. */
6819 h->root.u.def.value = sym->st_value;
6820 h->root.u.def.section = sec;
6821 }
a06ea964
NC		 6822 }
6823 else
6824 {
62d887d4 6825 bfd_boolean warned, ignored;
a06ea964
NC		 6826
6827 RELOC_FOR_GLOBAL_SYMBOL (info, input_bfd, input_section, rel,
6828 r_symndx, symtab_hdr, sym_hashes,
6829 h, sec, relocation,
62d887d4 6830 unresolved_reloc, warned, ignored);
a06ea964
NC		 6831
6832 sym_type = h->type;
6833 }
6834
6835 if (sec != NULL && discarded_section (sec))
6836 RELOC_AGAINST_DISCARDED_SECTION (info, input_bfd, input_section,
6837 rel, 1, relend, howto, 0, contents);
6838
0e1862bb 6839 if (bfd_link_relocatable (info))
2e0488d3 6840 continue;
a06ea964
NC		 6841
6842 if (h != NULL)
6843 name = h->root.root.string;
6844 else
6845 {
6846 name = (bfd_elf_string_from_elf_section
6847 (input_bfd, symtab_hdr->sh_link, sym->st_name));
6848 if (name == NULL || *name == '\0')
fd361982 6849 name = bfd_section_name (sec);
a06ea964
NC		 6850 }
6851
6852 if (r_symndx != 0
6853 && r_type != R_AARCH64_NONE
6854 && r_type != R_AARCH64_NULL
6855 && (h == NULL
6856 || h->root.type == bfd_link_hash_defined
6857 || h->root.type == bfd_link_hash_defweak)
a6bb11b2 6858 && IS_AARCH64_TLS_RELOC (bfd_r_type) != (sym_type == STT_TLS))
a06ea964 6859 {
4eca0228 6860 _bfd_error_handler
a06ea964 6861 ((sym_type == STT_TLS
695344c0 6862 /* xgettext:c-format */
2dcf00ce 6863 ? _("%pB(%pA+%#" PRIx64 "): %s used with TLS symbol %s")
695344c0 6864 /* xgettext:c-format */
2dcf00ce 6865 : _("%pB(%pA+%#" PRIx64 "): %s used with non-TLS symbol %s")),
a06ea964 6866 input_bfd,
2dcf00ce 6867 input_section, (uint64_t) rel->r_offset, howto->name, name);
a06ea964
NC		 6868 }
6869
a06ea964 6870 /* We relax only if we can see that there can be a valid transition
07d6d2b8
AM		 6871 from a reloc type to another.
6872 We call elfNN_aarch64_final_link_relocate unless we're completely
6873 done, i.e., the relaxation produced the final output we want. */
a06ea964 6874
a6bb11b2
YZ		 6875 relaxed_bfd_r_type = aarch64_tls_transition (input_bfd, info, r_type,
6876 h, r_symndx);
6877 if (relaxed_bfd_r_type != bfd_r_type)
a06ea964 6878 {
a6bb11b2
YZ		 6879 bfd_r_type = relaxed_bfd_r_type;
6880 howto = elfNN_aarch64_howto_from_bfd_reloc (bfd_r_type);
6881 BFD_ASSERT (howto != NULL);
6882 r_type = howto->type;
9fca35fc
TC		 6883 r = elfNN_aarch64_tls_relax (globals, input_bfd, input_section,
6884 contents, rel, h);
a06ea964
NC		 6885 unresolved_reloc = 0;
6886 }
6887 else
6888 r = bfd_reloc_continue;
6889
6890 /* There may be multiple consecutive relocations for the
07d6d2b8
AM		 6891 same offset. In that case we are supposed to treat the
6892 output of each relocation as the addend for the next. */
a06ea964
NC		 6893 if (rel + 1 < relend
6894 && rel->r_offset == rel[1].r_offset
cec5225b
YZ		 6895 && ELFNN_R_TYPE (rel[1].r_info) != R_AARCH64_NONE
6896 && ELFNN_R_TYPE (rel[1].r_info) != R_AARCH64_NULL)
a06ea964
NC		 6897 save_addend = TRUE;
6898 else
6899 save_addend = FALSE;
6900
6901 if (r == bfd_reloc_continue)
cec5225b 6902 r = elfNN_aarch64_final_link_relocate (howto, input_bfd, output_bfd,
a06ea964
NC		 6903 input_section, contents, rel,
6904 relocation, info, sec,
6905 h, &unresolved_reloc,
1419bbe5 6906 save_addend, &addend, sym);
a06ea964 6907
0aa13fee 6908 switch (elfNN_aarch64_bfd_reloc_from_type (input_bfd, r_type))
a06ea964 6909 {
ce336788 6910 case BFD_RELOC_AARCH64_TLSGD_ADD_LO12_NC:
a6bb11b2 6911 case BFD_RELOC_AARCH64_TLSGD_ADR_PAGE21:
3c12b054 6912 case BFD_RELOC_AARCH64_TLSGD_ADR_PREL21:
7ba7cfe4 6913 case BFD_RELOC_AARCH64_TLSGD_MOVW_G0_NC:
94facae3 6914 case BFD_RELOC_AARCH64_TLSGD_MOVW_G1:
73f925cc 6915 case BFD_RELOC_AARCH64_TLSLD_ADD_LO12_NC:
f69e4920 6916 case BFD_RELOC_AARCH64_TLSLD_ADR_PAGE21:
77a69ff8 6917 case BFD_RELOC_AARCH64_TLSLD_ADR_PREL21:
a06ea964
NC		 6918 if (! symbol_got_offset_mark_p (input_bfd, h, r_symndx))
6919 {
6920 bfd_boolean need_relocs = FALSE;
6921 bfd_byte *loc;
6922 int indx;
6923 bfd_vma off;
6924
6925 off = symbol_got_offset (input_bfd, h, r_symndx);
6926 indx = h && h->dynindx != -1 ? h->dynindx : 0;
6927
6928 need_relocs =
6dda7875 6929 (!bfd_link_executable (info) || indx != 0) &&
a06ea964
NC		 6930 (h == NULL
6931 || ELF_ST_VISIBILITY (h->other) == STV_DEFAULT
6932 || h->root.type != bfd_link_hash_undefweak);
6933
6934 BFD_ASSERT (globals->root.srelgot != NULL);
6935
6936 if (need_relocs)
6937 {
6938 Elf_Internal_Rela rela;
a6bb11b2 6939 rela.r_info = ELFNN_R_INFO (indx, AARCH64_R (TLS_DTPMOD));
a06ea964
NC		 6940 rela.r_addend = 0;
6941 rela.r_offset = globals->root.sgot->output_section->vma +
6942 globals->root.sgot->output_offset + off;
6943
6944
6945 loc = globals->root.srelgot->contents;
6946 loc += globals->root.srelgot->reloc_count++
6947 * RELOC_SIZE (htab);
cec5225b 6948 bfd_elfNN_swap_reloca_out (output_bfd, &rela, loc);
a06ea964 6949
f69e4920 6950 bfd_reloc_code_real_type real_type =
0aa13fee 6951 elfNN_aarch64_bfd_reloc_from_type (input_bfd, r_type);
f69e4920
JW		 6952
6953 if (real_type == BFD_RELOC_AARCH64_TLSLD_ADR_PREL21
73f925cc
JW		 6954 || real_type == BFD_RELOC_AARCH64_TLSLD_ADR_PAGE21
6955 || real_type == BFD_RELOC_AARCH64_TLSLD_ADD_LO12_NC)
77a69ff8
JW		 6956 {
6957 /* For local dynamic, don't generate DTPREL in any case.
6958 Initialize the DTPREL slot into zero, so we get module
6959 base address when invoke runtime TLS resolver. */
6960 bfd_put_NN (output_bfd, 0,
6961 globals->root.sgot->contents + off
6962 + GOT_ENTRY_SIZE);
6963 }
6964 else if (indx == 0)
a06ea964 6965 {
cec5225b 6966 bfd_put_NN (output_bfd,
a06ea964
NC		 6967 relocation - dtpoff_base (info),
6968 globals->root.sgot->contents + off
6969 + GOT_ENTRY_SIZE);
6970 }
6971 else
6972 {
6973 /* This TLS symbol is global. We emit a
6974 relocation to fixup the tls offset at load
6975 time. */
6976 rela.r_info =
a6bb11b2 6977 ELFNN_R_INFO (indx, AARCH64_R (TLS_DTPREL));
a06ea964
NC		 6978 rela.r_addend = 0;
6979 rela.r_offset =
6980 (globals->root.sgot->output_section->vma
6981 + globals->root.sgot->output_offset + off
6982 + GOT_ENTRY_SIZE);
6983
6984 loc = globals->root.srelgot->contents;
6985 loc += globals->root.srelgot->reloc_count++
6986 * RELOC_SIZE (globals);
cec5225b
YZ		 6987 bfd_elfNN_swap_reloca_out (output_bfd, &rela, loc);
6988 bfd_put_NN (output_bfd, (bfd_vma) 0,
a06ea964
NC		 6989 globals->root.sgot->contents + off
6990 + GOT_ENTRY_SIZE);
6991 }
6992 }
6993 else
6994 {
cec5225b 6995 bfd_put_NN (output_bfd, (bfd_vma) 1,
a06ea964 6996 globals->root.sgot->contents + off);
cec5225b 6997 bfd_put_NN (output_bfd,
a06ea964
NC		 6998 relocation - dtpoff_base (info),
6999 globals->root.sgot->contents + off
7000 + GOT_ENTRY_SIZE);
7001 }
7002
7003 symbol_got_offset_mark (input_bfd, h, r_symndx);
7004 }
7005 break;
7006
a6bb11b2
YZ		 7007 case BFD_RELOC_AARCH64_TLSIE_ADR_GOTTPREL_PAGE21:
7008 case BFD_RELOC_AARCH64_TLSIE_LDNN_GOTTPREL_LO12_NC:
043bf05a 7009 case BFD_RELOC_AARCH64_TLSIE_LD_GOTTPREL_PREL19:
3b957e5b
RL		 7010 case BFD_RELOC_AARCH64_TLSIE_MOVW_GOTTPREL_G0_NC:
7011 case BFD_RELOC_AARCH64_TLSIE_MOVW_GOTTPREL_G1:
a06ea964
NC		 7012 if (! symbol_got_offset_mark_p (input_bfd, h, r_symndx))
7013 {
7014 bfd_boolean need_relocs = FALSE;
7015 bfd_byte *loc;
7016 int indx;
7017 bfd_vma off;
7018
7019 off = symbol_got_offset (input_bfd, h, r_symndx);
7020
7021 indx = h && h->dynindx != -1 ? h->dynindx : 0;
7022
7023 need_relocs =
6dda7875 7024 (!bfd_link_executable (info) || indx != 0) &&
a06ea964
NC		 7025 (h == NULL
7026 || ELF_ST_VISIBILITY (h->other) == STV_DEFAULT
7027 || h->root.type != bfd_link_hash_undefweak);
7028
7029 BFD_ASSERT (globals->root.srelgot != NULL);
7030
7031 if (need_relocs)
7032 {
7033 Elf_Internal_Rela rela;
7034
7035 if (indx == 0)
7036 rela.r_addend = relocation - dtpoff_base (info);
7037 else
7038 rela.r_addend = 0;
7039
a6bb11b2 7040 rela.r_info = ELFNN_R_INFO (indx, AARCH64_R (TLS_TPREL));
a06ea964
NC		 7041 rela.r_offset = globals->root.sgot->output_section->vma +
7042 globals->root.sgot->output_offset + off;
7043
7044 loc = globals->root.srelgot->contents;
7045 loc += globals->root.srelgot->reloc_count++
7046 * RELOC_SIZE (htab);
7047
cec5225b 7048 bfd_elfNN_swap_reloca_out (output_bfd, &rela, loc);
a06ea964 7049
cec5225b 7050 bfd_put_NN (output_bfd, rela.r_addend,
a06ea964
NC		 7051 globals->root.sgot->contents + off);
7052 }
7053 else
cec5225b 7054 bfd_put_NN (output_bfd, relocation - tpoff_base (info),
a06ea964
NC		 7055 globals->root.sgot->contents + off);
7056
7057 symbol_got_offset_mark (input_bfd, h, r_symndx);
7058 }
7059 break;
7060
f955cccf 7061 case BFD_RELOC_AARCH64_TLSDESC_ADD_LO12:
a6bb11b2 7062 case BFD_RELOC_AARCH64_TLSDESC_ADR_PAGE21:
389b8029 7063 case BFD_RELOC_AARCH64_TLSDESC_ADR_PREL21:
a6bb11b2 7064 case BFD_RELOC_AARCH64_TLSDESC_LDNN_LO12_NC:
1ada945d 7065 case BFD_RELOC_AARCH64_TLSDESC_LD_PREL19:
0484b454
RL		 7066 case BFD_RELOC_AARCH64_TLSDESC_OFF_G0_NC:
7067 case BFD_RELOC_AARCH64_TLSDESC_OFF_G1:
a06ea964
NC		 7068 if (! symbol_tlsdesc_got_offset_mark_p (input_bfd, h, r_symndx))
7069 {
7070 bfd_boolean need_relocs = FALSE;
7071 int indx = h && h->dynindx != -1 ? h->dynindx : 0;
7072 bfd_vma off = symbol_tlsdesc_got_offset (input_bfd, h, r_symndx);
7073
7074 need_relocs = (h == NULL
7075 || ELF_ST_VISIBILITY (h->other) == STV_DEFAULT
7076 || h->root.type != bfd_link_hash_undefweak);
7077
7078 BFD_ASSERT (globals->root.srelgot != NULL);
7079 BFD_ASSERT (globals->root.sgot != NULL);
7080
7081 if (need_relocs)
7082 {
7083 bfd_byte *loc;
7084 Elf_Internal_Rela rela;
a6bb11b2
YZ		 7085 rela.r_info = ELFNN_R_INFO (indx, AARCH64_R (TLSDESC));
7086
a06ea964
NC		 7087 rela.r_addend = 0;
7088 rela.r_offset = (globals->root.sgotplt->output_section->vma
7089 + globals->root.sgotplt->output_offset
7090 + off + globals->sgotplt_jump_table_size);
7091
7092 if (indx == 0)
7093 rela.r_addend = relocation - dtpoff_base (info);
7094
7095 /* Allocate the next available slot in the PLT reloc
7096 section to hold our R_AARCH64_TLSDESC, the next
7097 available slot is determined from reloc_count,
7098 which we step. But note, reloc_count was
7099 artifically moved down while allocating slots for
7100 real PLT relocs such that all of the PLT relocs
7101 will fit above the initial reloc_count and the
7102 extra stuff will fit below. */
7103 loc = globals->root.srelplt->contents;
7104 loc += globals->root.srelplt->reloc_count++
7105 * RELOC_SIZE (globals);
7106
cec5225b 7107 bfd_elfNN_swap_reloca_out (output_bfd, &rela, loc);
a06ea964 7108
cec5225b 7109 bfd_put_NN (output_bfd, (bfd_vma) 0,
a06ea964
NC		 7110 globals->root.sgotplt->contents + off +
7111 globals->sgotplt_jump_table_size);
cec5225b 7112 bfd_put_NN (output_bfd, (bfd_vma) 0,
a06ea964
NC		 7113 globals->root.sgotplt->contents + off +
7114 globals->sgotplt_jump_table_size +
7115 GOT_ENTRY_SIZE);
7116 }
7117
7118 symbol_tlsdesc_got_offset_mark (input_bfd, h, r_symndx);
7119 }
7120 break;
a6bb11b2
YZ		 7121 default:
7122 break;
a06ea964
NC		 7123 }
7124
a06ea964 7125 /* Dynamic relocs are not propagated for SEC_DEBUGGING sections
07d6d2b8
AM		 7126 because such sections are not SEC_ALLOC and thus ld.so will
7127 not process them. */
a06ea964
NC		 7128 if (unresolved_reloc
7129 && !((input_section->flags & SEC_DEBUGGING) != 0
7130 && h->def_dynamic)
7131 && _bfd_elf_section_offset (output_bfd, info, input_section,
7132 +rel->r_offset) != (bfd_vma) - 1)
7133 {
4eca0228 7134 _bfd_error_handler
695344c0 7135 /* xgettext:c-format */
2dcf00ce
AM		 7136 (_("%pB(%pA+%#" PRIx64 "): "
7137 "unresolvable %s relocation against symbol `%s'"),
7138 input_bfd, input_section, (uint64_t) rel->r_offset, howto->name,
a06ea964
NC		 7139 h->root.root.string);
7140 return FALSE;
7141 }
7142
7143 if (r != bfd_reloc_ok && r != bfd_reloc_continue)
7144 {
c674f5cd 7145 bfd_reloc_code_real_type real_r_type
0aa13fee 7146 = elfNN_aarch64_bfd_reloc_from_type (input_bfd, r_type);
c674f5cd 7147
a06ea964
NC		 7148 switch (r)
7149 {
7150 case bfd_reloc_overflow:
1a72702b
AM		 7151 (*info->callbacks->reloc_overflow)
7152 (info, (h ? &h->root : NULL), name, howto->name, (bfd_vma) 0,
7153 input_bfd, input_section, rel->r_offset);
c674f5cd
JW		 7154 if (real_r_type == BFD_RELOC_AARCH64_LD64_GOTPAGE_LO15
7155 || real_r_type == BFD_RELOC_AARCH64_LD32_GOTPAGE_LO14)
7156 {
7157 (*info->callbacks->warning)
7158 (info,
90b6238f 7159 _("too many GOT entries for -fpic, "
c674f5cd
JW		 7160 "please recompile with -fPIC"),
7161 name, input_bfd, input_section, rel->r_offset);
7162 return FALSE;
7163 }
027e9c75
NC		 7164 /* Overflow can occur when a variable is referenced with a type
7165 that has a larger alignment than the type with which it was
7166 declared. eg:
7167 file1.c: extern int foo; int a (void) { return foo; }
7168 file2.c: char bar, foo, baz;
7169 If the variable is placed into a data section at an offset
7170 that is incompatible with the larger alignment requirement
7171 overflow will occur. (Strictly speaking this is not overflow
7172 but rather an alignment problem, but the bfd_reloc_ error
7173 enum does not have a value to cover that situation).
7174
7175 Try to catch this situation here and provide a more helpful
7176 error message to the user. */
7177 if (addend & ((1 << howto->rightshift) - 1)
7178 /* FIXME: Are we testing all of the appropriate reloc
7179 types here ? */
7180 && (real_r_type == BFD_RELOC_AARCH64_LD_LO19_PCREL
7181 || real_r_type == BFD_RELOC_AARCH64_LDST16_LO12
7182 || real_r_type == BFD_RELOC_AARCH64_LDST32_LO12
7183 || real_r_type == BFD_RELOC_AARCH64_LDST64_LO12
7184 || real_r_type == BFD_RELOC_AARCH64_LDST128_LO12))
7185 {
7186 info->callbacks->warning
90b6238f 7187 (info, _("one possible cause of this error is that the \
027e9c75 7188symbol is being referenced in the indicated code as if it had a larger \
90b6238f 7189alignment than was declared where it was defined"),
027e9c75
NC		 7190 name, input_bfd, input_section, rel->r_offset);
7191 }
a06ea964
NC		 7192 break;
7193
7194 case bfd_reloc_undefined:
1a72702b
AM		 7195 (*info->callbacks->undefined_symbol)
7196 (info, name, input_bfd, input_section, rel->r_offset, TRUE);
a06ea964
NC		 7197 break;
7198
7199 case bfd_reloc_outofrange:
7200 error_message = _("out of range");
7201 goto common_error;
7202
7203 case bfd_reloc_notsupported:
7204 error_message = _("unsupported relocation");
7205 goto common_error;
7206
7207 case bfd_reloc_dangerous:
7208 /* error_message should already be set. */
7209 goto common_error;
7210
7211 default:
7212 error_message = _("unknown error");
7213 /* Fall through. */
7214
7215 common_error:
7216 BFD_ASSERT (error_message != NULL);
1a72702b
AM		 7217 (*info->callbacks->reloc_dangerous)
7218 (info, error_message, input_bfd, input_section, rel->r_offset);
a06ea964
NC		 7219 break;
7220 }
7221 }
027e9c75
NC		 7222
7223 if (!save_addend)
7224 addend = 0;
a06ea964
NC		 7225 }
7226
7227 return TRUE;
7228}
7229
7230/* Set the right machine number. */
7231
7232static bfd_boolean
cec5225b 7233elfNN_aarch64_object_p (bfd *abfd)
a06ea964 7234{
cec5225b
YZ		 7235#if ARCH_SIZE == 32
7236 bfd_default_set_arch_mach (abfd, bfd_arch_aarch64, bfd_mach_aarch64_ilp32);
7237#else
a06ea964 7238 bfd_default_set_arch_mach (abfd, bfd_arch_aarch64, bfd_mach_aarch64);
cec5225b 7239#endif
a06ea964
NC		 7240 return TRUE;
7241}
7242
7243/* Function to keep AArch64 specific flags in the ELF header. */
7244
7245static bfd_boolean
cec5225b 7246elfNN_aarch64_set_private_flags (bfd *abfd, flagword flags)
a06ea964
NC		 7247{
7248 if (elf_flags_init (abfd) && elf_elfheader (abfd)->e_flags != flags)
7249 {
7250 }
7251 else
7252 {
7253 elf_elfheader (abfd)->e_flags = flags;
7254 elf_flags_init (abfd) = TRUE;
7255 }
7256
7257 return TRUE;
7258}
7259
a06ea964
NC		 7260/* Merge backend specific data from an object file to the output
7261 object file when linking. */
7262
7263static bfd_boolean
50e03d47 7264elfNN_aarch64_merge_private_bfd_data (bfd *ibfd, struct bfd_link_info *info)
a06ea964 7265{
50e03d47 7266 bfd *obfd = info->output_bfd;
a06ea964
NC		 7267 flagword out_flags;
7268 flagword in_flags;
7269 bfd_boolean flags_compatible = TRUE;
7270 asection *sec;
7271
7272 /* Check if we have the same endianess. */
50e03d47 7273 if (!_bfd_generic_verify_endian_match (ibfd, info))
a06ea964
NC		 7274 return FALSE;
7275
7276 if (!is_aarch64_elf (ibfd) || !is_aarch64_elf (obfd))
7277 return TRUE;
7278
7279 /* The input BFD must have had its flags initialised. */
7280 /* The following seems bogus to me -- The flags are initialized in
7281 the assembler but I don't think an elf_flags_init field is
7282 written into the object. */
7283 /* BFD_ASSERT (elf_flags_init (ibfd)); */
7284
7285 in_flags = elf_elfheader (ibfd)->e_flags;
7286 out_flags = elf_elfheader (obfd)->e_flags;
7287
7288 if (!elf_flags_init (obfd))
7289 {
7290 /* If the input is the default architecture and had the default
07d6d2b8
AM		 7291 flags then do not bother setting the flags for the output
7292 architecture, instead allow future merges to do this. If no
7293 future merges ever set these flags then they will retain their
7294 uninitialised values, which surprise surprise, correspond
7295 to the default values. */
a06ea964
NC		 7296 if (bfd_get_arch_info (ibfd)->the_default
7297 && elf_elfheader (ibfd)->e_flags == 0)
7298 return TRUE;
7299
7300 elf_flags_init (obfd) = TRUE;
7301 elf_elfheader (obfd)->e_flags = in_flags;
7302
7303 if (bfd_get_arch (obfd) == bfd_get_arch (ibfd)
7304 && bfd_get_arch_info (obfd)->the_default)
7305 return bfd_set_arch_mach (obfd, bfd_get_arch (ibfd),
7306 bfd_get_mach (ibfd));
7307
7308 return TRUE;
7309 }
7310
7311 /* Identical flags must be compatible. */
7312 if (in_flags == out_flags)
7313 return TRUE;
7314
7315 /* Check to see if the input BFD actually contains any sections. If
7316 not, its flags may not have been initialised either, but it
7317 cannot actually cause any incompatiblity. Do not short-circuit
7318 dynamic objects; their section list may be emptied by
7319 elf_link_add_object_symbols.
7320
7321 Also check to see if there are no code sections in the input.
7322 In this case there is no need to check for code specific flags.
7323 XXX - do we need to worry about floating-point format compatability
7324 in data sections ? */
7325 if (!(ibfd->flags & DYNAMIC))
7326 {
7327 bfd_boolean null_input_bfd = TRUE;
7328 bfd_boolean only_data_sections = TRUE;
7329
7330 for (sec = ibfd->sections; sec != NULL; sec = sec->next)
7331 {
fd361982 7332 if ((bfd_section_flags (sec)
a06ea964
NC		 7333 & (SEC_LOAD | SEC_CODE | SEC_HAS_CONTENTS))
7334 == (SEC_LOAD | SEC_CODE | SEC_HAS_CONTENTS))
7335 only_data_sections = FALSE;
7336
7337 null_input_bfd = FALSE;
7338 break;
7339 }
7340
7341 if (null_input_bfd || only_data_sections)
7342 return TRUE;
7343 }
7344
7345 return flags_compatible;
7346}
7347
7348/* Display the flags field. */
7349
7350static bfd_boolean
cec5225b 7351elfNN_aarch64_print_private_bfd_data (bfd *abfd, void *ptr)
a06ea964
NC		 7352{
7353 FILE *file = (FILE *) ptr;
7354 unsigned long flags;
7355
7356 BFD_ASSERT (abfd != NULL && ptr != NULL);
7357
7358 /* Print normal ELF private data. */
7359 _bfd_elf_print_private_bfd_data (abfd, ptr);
7360
7361 flags = elf_elfheader (abfd)->e_flags;
7362 /* Ignore init flag - it may not be set, despite the flags field
7363 containing valid data. */
7364
7365 /* xgettext:c-format */
7366 fprintf (file, _("private flags = %lx:"), elf_elfheader (abfd)->e_flags);
7367
7368 if (flags)
7369 fprintf (file, _("<Unrecognised flag bits set>"));
7370
7371 fputc ('\n', file);
7372
7373 return TRUE;
7374}
7375
63c1f59d
AM		 7376/* Find dynamic relocs for H that apply to read-only sections. */
7377
7378static asection *
7379readonly_dynrelocs (struct elf_link_hash_entry *h)
7380{
7381 struct elf_dyn_relocs *p;
7382
7383 for (p = elf_aarch64_hash_entry (h)->dyn_relocs; p != NULL; p = p->next)
7384 {
7385 asection *s = p->sec->output_section;
7386
7387 if (s != NULL && (s->flags & SEC_READONLY) != 0)
7388 return p->sec;
7389 }
7390 return NULL;
7391}
7392
6353d82b
JW		 7393/* Return true if we need copy relocation against EH. */
7394
7395static bfd_boolean
7396need_copy_relocation_p (struct elf_aarch64_link_hash_entry *eh)
7397{
7398 struct elf_dyn_relocs *p;
7399 asection *s;
7400
7401 for (p = eh->dyn_relocs; p != NULL; p = p->next)
7402 {
7403 /* If there is any pc-relative reference, we need to keep copy relocation
7404 to avoid propagating the relocation into runtime that current glibc
7405 does not support. */
7406 if (p->pc_count)
7407 return TRUE;
7408
7409 s = p->sec->output_section;
7410 /* Need copy relocation if it's against read-only section. */
7411 if (s != NULL && (s->flags & SEC_READONLY) != 0)
7412 return TRUE;
7413 }
7414
7415 return FALSE;
7416}
7417
a06ea964
NC		 7418/* Adjust a symbol defined by a dynamic object and referenced by a
7419 regular object. The current definition is in some section of the
7420 dynamic object, but we're not including those sections. We have to
7421 change the definition to something the rest of the link can
7422 understand. */
7423
7424static bfd_boolean
cec5225b 7425elfNN_aarch64_adjust_dynamic_symbol (struct bfd_link_info *info,
a06ea964
NC		 7426 struct elf_link_hash_entry *h)
7427{
cec5225b 7428 struct elf_aarch64_link_hash_table *htab;
5474d94f 7429 asection *s, *srel;
a06ea964
NC		 7430
7431 /* If this is a function, put it in the procedure linkage table. We
7432 will fill in the contents of the procedure linkage table later,
7433 when we know the address of the .got section. */
1419bbe5 7434 if (h->type == STT_FUNC || h->type == STT_GNU_IFUNC || h->needs_plt)
a06ea964
NC		 7435 {
7436 if (h->plt.refcount <= 0
1419bbe5
WN		 7437 || (h->type != STT_GNU_IFUNC
7438 && (SYMBOL_CALLS_LOCAL (info, h)
7439 || (ELF_ST_VISIBILITY (h->other) != STV_DEFAULT
7440 && h->root.type == bfd_link_hash_undefweak))))
a06ea964
NC		 7441 {
7442 /* This case can occur if we saw a CALL26 reloc in
7443 an input file, but the symbol wasn't referred to
7444 by a dynamic object or all references were
7445 garbage collected. In which case we can end up
7446 resolving. */
7447 h->plt.offset = (bfd_vma) - 1;
7448 h->needs_plt = 0;
7449 }
7450
7451 return TRUE;
7452 }
7453 else
80de0c6d 7454 /* Otherwise, reset to -1. */
a06ea964
NC		 7455 h->plt.offset = (bfd_vma) - 1;
7456
7457
7458 /* If this is a weak symbol, and there is a real definition, the
7459 processor independent code will have arranged for us to see the
7460 real definition first, and we can just use the same value. */
60d67dc8 7461 if (h->is_weakalias)
a06ea964 7462 {
60d67dc8
AM		 7463 struct elf_link_hash_entry *def = weakdef (h);
7464 BFD_ASSERT (def->root.type == bfd_link_hash_defined);
7465 h->root.u.def.section = def->root.u.def.section;
7466 h->root.u.def.value = def->root.u.def.value;
a06ea964 7467 if (ELIMINATE_COPY_RELOCS || info->nocopyreloc)
60d67dc8 7468 h->non_got_ref = def->non_got_ref;
a06ea964
NC		 7469 return TRUE;
7470 }
7471
7472 /* If we are creating a shared library, we must presume that the
7473 only references to the symbol are via the global offset table.
7474 For such cases we need not do anything here; the relocations will
7475 be handled correctly by relocate_section. */
0e1862bb 7476 if (bfd_link_pic (info))
a06ea964
NC		 7477 return TRUE;
7478
7479 /* If there are no references to this symbol that do not use the
7480 GOT, we don't need to generate a copy reloc. */
7481 if (!h->non_got_ref)
7482 return TRUE;
7483
7484 /* If -z nocopyreloc was given, we won't generate them either. */
7485 if (info->nocopyreloc)
7486 {
7487 h->non_got_ref = 0;
7488 return TRUE;
7489 }
7490
6353d82b
JW		 7491 if (ELIMINATE_COPY_RELOCS)
7492 {
7493 struct elf_aarch64_link_hash_entry *eh;
dce2246a 7494 /* If we don't find any dynamic relocs in read-only sections, then
6353d82b
JW		 7495 we'll be keeping the dynamic relocs and avoiding the copy reloc. */
7496 eh = (struct elf_aarch64_link_hash_entry *) h;
7497 if (!need_copy_relocation_p (eh))
7498 {
7499 h->non_got_ref = 0;
7500 return TRUE;
7501 }
7502 }
7503
a06ea964
NC		 7504 /* We must allocate the symbol in our .dynbss section, which will
7505 become part of the .bss section of the executable. There will be
7506 an entry for this symbol in the .dynsym section. The dynamic
7507 object will contain position independent code, so all references
7508 from the dynamic object to this symbol will go through the global
7509 offset table. The dynamic linker will use the .dynsym entry to
7510 determine the address it must put in the global offset table, so
7511 both the dynamic object and the regular object will refer to the
7512 same memory location for the variable. */
7513
cec5225b 7514 htab = elf_aarch64_hash_table (info);
a06ea964
NC		 7515
7516 /* We must generate a R_AARCH64_COPY reloc to tell the dynamic linker
7517 to copy the initial value out of the dynamic object and into the
7518 runtime process image. */
5474d94f
AM		 7519 if ((h->root.u.def.section->flags & SEC_READONLY) != 0)
7520 {
7521 s = htab->root.sdynrelro;
7522 srel = htab->root.sreldynrelro;
7523 }
7524 else
7525 {
7526 s = htab->root.sdynbss;
7527 srel = htab->root.srelbss;
7528 }
a06ea964
NC		 7529 if ((h->root.u.def.section->flags & SEC_ALLOC) != 0 && h->size != 0)
7530 {
5474d94f 7531 srel->size += RELOC_SIZE (htab);
a06ea964
NC		 7532 h->needs_copy = 1;
7533 }
7534
6cabe1ea 7535 return _bfd_elf_adjust_dynamic_copy (info, h, s);
a06ea964
NC		 7536
7537}
7538
7539static bfd_boolean
cec5225b 7540elfNN_aarch64_allocate_local_symbols (bfd *abfd, unsigned number)
a06ea964
NC		 7541{
7542 struct elf_aarch64_local_symbol *locals;
cec5225b 7543 locals = elf_aarch64_locals (abfd);
a06ea964
NC		 7544 if (locals == NULL)
7545 {
7546 locals = (struct elf_aarch64_local_symbol *)
7547 bfd_zalloc (abfd, number * sizeof (struct elf_aarch64_local_symbol));
7548 if (locals == NULL)
7549 return FALSE;
cec5225b 7550 elf_aarch64_locals (abfd) = locals;
a06ea964
NC		 7551 }
7552 return TRUE;
7553}
7554
cc0efaa8
MS		 7555/* Create the .got section to hold the global offset table. */
7556
7557static bfd_boolean
7558aarch64_elf_create_got_section (bfd *abfd, struct bfd_link_info *info)
7559{
7560 const struct elf_backend_data *bed = get_elf_backend_data (abfd);
7561 flagword flags;
7562 asection *s;
7563 struct elf_link_hash_entry *h;
7564 struct elf_link_hash_table *htab = elf_hash_table (info);
7565
7566 /* This function may be called more than once. */
ce558b89 7567 if (htab->sgot != NULL)
cc0efaa8
MS		 7568 return TRUE;
7569
7570 flags = bed->dynamic_sec_flags;
7571
7572 s = bfd_make_section_anyway_with_flags (abfd,
7573 (bed->rela_plts_and_copies_p
7574 ? ".rela.got" : ".rel.got"),
7575 (bed->dynamic_sec_flags
7576 | SEC_READONLY));
7577 if (s == NULL
fd361982 7578 || !bfd_set_section_alignment (s, bed->s->log_file_align))
cc0efaa8
MS		 7579 return FALSE;
7580 htab->srelgot = s;
7581
7582 s = bfd_make_section_anyway_with_flags (abfd, ".got", flags);
7583 if (s == NULL
fd361982 7584 || !bfd_set_section_alignment (s, bed->s->log_file_align))
cc0efaa8
MS		 7585 return FALSE;
7586 htab->sgot = s;
7587 htab->sgot->size += GOT_ENTRY_SIZE;
7588
7589 if (bed->want_got_sym)
7590 {
7591 /* Define the symbol _GLOBAL_OFFSET_TABLE_ at the start of the .got
7592 (or .got.plt) section. We don't do this in the linker script
7593 because we don't want to define the symbol if we are not creating
7594 a global offset table. */
7595 h = _bfd_elf_define_linkage_sym (abfd, info, s,
7596 "_GLOBAL_OFFSET_TABLE_");
7597 elf_hash_table (info)->hgot = h;
7598 if (h == NULL)
7599 return FALSE;
7600 }
7601
7602 if (bed->want_got_plt)
7603 {
7604 s = bfd_make_section_anyway_with_flags (abfd, ".got.plt", flags);
7605 if (s == NULL
fd361982 7606 || !bfd_set_section_alignment (s, bed->s->log_file_align))
cc0efaa8
MS		 7607 return FALSE;
7608 htab->sgotplt = s;
7609 }
7610
7611 /* The first bit of the global offset table is the header. */
7612 s->size += bed->got_header_size;
7613
7614 return TRUE;
7615}
7616
a06ea964
NC		 7617/* Look through the relocs for a section during the first phase. */
7618
7619static bfd_boolean
cec5225b 7620elfNN_aarch64_check_relocs (bfd *abfd, struct bfd_link_info *info,
a06ea964
NC		 7621 asection *sec, const Elf_Internal_Rela *relocs)
7622{
7623 Elf_Internal_Shdr *symtab_hdr;
7624 struct elf_link_hash_entry **sym_hashes;
7625 const Elf_Internal_Rela *rel;
7626 const Elf_Internal_Rela *rel_end;
7627 asection *sreloc;
7628
cec5225b 7629 struct elf_aarch64_link_hash_table *htab;
a06ea964 7630
0e1862bb 7631 if (bfd_link_relocatable (info))
a06ea964
NC		 7632 return TRUE;
7633
7634 BFD_ASSERT (is_aarch64_elf (abfd));
7635
cec5225b 7636 htab = elf_aarch64_hash_table (info);
a06ea964
NC		 7637 sreloc = NULL;
7638
7639 symtab_hdr = &elf_symtab_hdr (abfd);
7640 sym_hashes = elf_sym_hashes (abfd);
a06ea964
NC		 7641
7642 rel_end = relocs + sec->reloc_count;
7643 for (rel = relocs; rel < rel_end; rel++)
7644 {
7645 struct elf_link_hash_entry *h;
d42c267e 7646 unsigned int r_symndx;
a06ea964 7647 unsigned int r_type;
a6bb11b2 7648 bfd_reloc_code_real_type bfd_r_type;
1419bbe5 7649 Elf_Internal_Sym *isym;
a06ea964 7650
cec5225b
YZ		 7651 r_symndx = ELFNN_R_SYM (rel->r_info);
7652 r_type = ELFNN_R_TYPE (rel->r_info);
a06ea964
NC		 7653
7654 if (r_symndx >= NUM_SHDR_ENTRIES (symtab_hdr))
7655 {
695344c0 7656 /* xgettext:c-format */
871b3ab2 7657 _bfd_error_handler (_("%pB: bad symbol index: %d"), abfd, r_symndx);
a06ea964
NC		 7658 return FALSE;
7659 }
7660
ed5acf27 7661 if (r_symndx < symtab_hdr->sh_info)
1419bbe5
WN		 7662 {
7663 /* A local symbol. */
7664 isym = bfd_sym_from_r_symndx (&htab->sym_cache,
7665 abfd, r_symndx);
7666 if (isym == NULL)
7667 return FALSE;
7668
7669 /* Check relocation against local STT_GNU_IFUNC symbol. */
7670 if (ELF_ST_TYPE (isym->st_info) == STT_GNU_IFUNC)
7671 {
7672 h = elfNN_aarch64_get_local_sym_hash (htab, abfd, rel,
7673 TRUE);
7674 if (h == NULL)
7675 return FALSE;
7676
7677 /* Fake a STT_GNU_IFUNC symbol. */
7678 h->type = STT_GNU_IFUNC;
7679 h->def_regular = 1;
7680 h->ref_regular = 1;
7681 h->forced_local = 1;
7682 h->root.type = bfd_link_hash_defined;
7683 }
7684 else
7685 h = NULL;
7686 }
a06ea964
NC		 7687 else
7688 {
7689 h = sym_hashes[r_symndx - symtab_hdr->sh_info];
7690 while (h->root.type == bfd_link_hash_indirect
7691 || h->root.type == bfd_link_hash_warning)
7692 h = (struct elf_link_hash_entry *) h->root.u.i.link;
7693 }
7694
7695 /* Could be done earlier, if h were already available. */
a6bb11b2 7696 bfd_r_type = aarch64_tls_transition (abfd, info, r_type, h, r_symndx);
a06ea964 7697
1419bbe5
WN		 7698 if (h != NULL)
7699 {
18f822a0
JW		 7700 /* If a relocation refers to _GLOBAL_OFFSET_TABLE_, create the .got.
7701 This shows up in particular in an R_AARCH64_PREL64 in large model
7702 when calculating the pc-relative address to .got section which is
7703 used to initialize the gp register. */
7704 if (h->root.root.string
7705 && strcmp (h->root.root.string, "_GLOBAL_OFFSET_TABLE_") == 0)
7706 {
7707 if (htab->root.dynobj == NULL)
7708 htab->root.dynobj = abfd;
7709
7710 if (! aarch64_elf_create_got_section (htab->root.dynobj, info))
7711 return FALSE;
7712
7713 BFD_ASSERT (h == htab->root.hgot);
7714 }
7715
1419bbe5
WN		 7716 /* Create the ifunc sections for static executables. If we
7717 never see an indirect function symbol nor we are building
7718 a static executable, those sections will be empty and
7719 won't appear in output. */
7720 switch (bfd_r_type)
7721 {
7722 default:
7723 break;
7724
ce336788
JW		 7725 case BFD_RELOC_AARCH64_ADD_LO12:
7726 case BFD_RELOC_AARCH64_ADR_GOT_PAGE:
7727 case BFD_RELOC_AARCH64_ADR_HI21_PCREL:
1419bbe5 7728 case BFD_RELOC_AARCH64_CALL26:
ce336788 7729 case BFD_RELOC_AARCH64_GOT_LD_PREL19:
1419bbe5 7730 case BFD_RELOC_AARCH64_JUMP26:
7018c030 7731 case BFD_RELOC_AARCH64_LD32_GOTPAGE_LO14:
1419bbe5 7732 case BFD_RELOC_AARCH64_LD32_GOT_LO12_NC:
a2e1db00 7733 case BFD_RELOC_AARCH64_LD64_GOTOFF_LO15:
99ad26cb 7734 case BFD_RELOC_AARCH64_LD64_GOTPAGE_LO15:
1419bbe5 7735 case BFD_RELOC_AARCH64_LD64_GOT_LO12_NC:
dc8008f5 7736 case BFD_RELOC_AARCH64_MOVW_GOTOFF_G0_NC:
74a1bfe1 7737 case BFD_RELOC_AARCH64_MOVW_GOTOFF_G1:
ce336788 7738 case BFD_RELOC_AARCH64_NN:
1419bbe5
WN		 7739 if (htab->root.dynobj == NULL)
7740 htab->root.dynobj = abfd;
7741 if (!_bfd_elf_create_ifunc_sections (htab->root.dynobj, info))
7742 return FALSE;
7743 break;
7744 }
7745
2d0ca824 7746 /* It is referenced by a non-shared object. */
1419bbe5 7747 h->ref_regular = 1;
1419bbe5
WN		 7748 }
7749
a6bb11b2 7750 switch (bfd_r_type)
a06ea964 7751 {
79e74192
RL		 7752 case BFD_RELOC_AARCH64_16:
7753#if ARCH_SIZE == 64
7754 case BFD_RELOC_AARCH64_32:
7755#endif
279b2f94 7756 if (bfd_link_pic (info) && (sec->flags & SEC_ALLOC) != 0)
79e74192 7757 {
279b2f94
RL		 7758 if (h != NULL
7759 /* This is an absolute symbol. It represents a value instead
7760 of an address. */
c691de6a 7761 && (bfd_is_abs_symbol (&h->root)
279b2f94
RL		 7762 /* This is an undefined symbol. */
7763 || h->root.type == bfd_link_hash_undefined))
7764 break;
7765
7766 /* For local symbols, defined global symbols in a non-ABS section,
7767 it is assumed that the value is an address. */
79e74192
RL		 7768 int howto_index = bfd_r_type - BFD_RELOC_AARCH64_RELOC_START;
7769 _bfd_error_handler
7770 /* xgettext:c-format */
871b3ab2 7771 (_("%pB: relocation %s against `%s' can not be used when making "
79e74192
RL		 7772 "a shared object"),
7773 abfd, elfNN_aarch64_howto_table[howto_index].name,
7774 (h) ? h->root.root.string : "a local symbol");
7775 bfd_set_error (bfd_error_bad_value);
7776 return FALSE;
7777 }
7778 else
7779 break;
7780
6353d82b
JW		 7781 case BFD_RELOC_AARCH64_MOVW_G0_NC:
7782 case BFD_RELOC_AARCH64_MOVW_G1_NC:
7783 case BFD_RELOC_AARCH64_MOVW_G2_NC:
7784 case BFD_RELOC_AARCH64_MOVW_G3:
7785 if (bfd_link_pic (info))
7786 {
7787 int howto_index = bfd_r_type - BFD_RELOC_AARCH64_RELOC_START;
7788 _bfd_error_handler
7789 /* xgettext:c-format */
871b3ab2 7790 (_("%pB: relocation %s against `%s' can not be used when making "
6353d82b
JW		 7791 "a shared object; recompile with -fPIC"),
7792 abfd, elfNN_aarch64_howto_table[howto_index].name,
7793 (h) ? h->root.root.string : "a local symbol");
7794 bfd_set_error (bfd_error_bad_value);
7795 return FALSE;
7796 }
7797 /* Fall through. */
7798
7799 case BFD_RELOC_AARCH64_16_PCREL:
7800 case BFD_RELOC_AARCH64_32_PCREL:
7801 case BFD_RELOC_AARCH64_64_PCREL:
7802 case BFD_RELOC_AARCH64_ADD_LO12:
7803 case BFD_RELOC_AARCH64_ADR_HI21_NC_PCREL:
7804 case BFD_RELOC_AARCH64_ADR_HI21_PCREL:
7805 case BFD_RELOC_AARCH64_ADR_LO21_PCREL:
7806 case BFD_RELOC_AARCH64_LDST128_LO12:
7807 case BFD_RELOC_AARCH64_LDST16_LO12:
7808 case BFD_RELOC_AARCH64_LDST32_LO12:
7809 case BFD_RELOC_AARCH64_LDST64_LO12:
7810 case BFD_RELOC_AARCH64_LDST8_LO12:
7811 case BFD_RELOC_AARCH64_LD_LO19_PCREL:
7812 if (h == NULL || bfd_link_pic (info))
7813 break;
7814 /* Fall through. */
7815
a6bb11b2 7816 case BFD_RELOC_AARCH64_NN:
a06ea964
NC		 7817
7818 /* We don't need to handle relocs into sections not going into
7819 the "real" output. */
7820 if ((sec->flags & SEC_ALLOC) == 0)
7821 break;
7822
7823 if (h != NULL)
7824 {
0e1862bb 7825 if (!bfd_link_pic (info))
a06ea964
NC		 7826 h->non_got_ref = 1;
7827
7828 h->plt.refcount += 1;
7829 h->pointer_equality_needed = 1;
7830 }
7831
7832 /* No need to do anything if we're not creating a shared
7833 object. */
6353d82b
JW		 7834 if (!(bfd_link_pic (info)
7835 /* If on the other hand, we are creating an executable, we
7836 may need to keep relocations for symbols satisfied by a
7837 dynamic library if we manage to avoid copy relocs for the
7838 symbol.
7839
7840 NOTE: Currently, there is no support of copy relocs
7841 elimination on pc-relative relocation types, because there is
7842 no dynamic relocation support for them in glibc. We still
7843 record the dynamic symbol reference for them. This is
7844 because one symbol may be referenced by both absolute
7845 relocation (for example, BFD_RELOC_AARCH64_NN) and
7846 pc-relative relocation. We need full symbol reference
7847 information to make correct decision later in
7848 elfNN_aarch64_adjust_dynamic_symbol. */
7849 || (ELIMINATE_COPY_RELOCS
7850 && !bfd_link_pic (info)
7851 && h != NULL
7852 && (h->root.type == bfd_link_hash_defweak
7853 || !h->def_regular))))
a06ea964
NC		 7854 break;
7855
7856 {
7857 struct elf_dyn_relocs *p;
7858 struct elf_dyn_relocs **head;
6353d82b 7859 int howto_index = bfd_r_type - BFD_RELOC_AARCH64_RELOC_START;
a06ea964
NC		 7860
7861 /* We must copy these reloc types into the output file.
7862 Create a reloc section in dynobj and make room for
7863 this reloc. */
7864 if (sreloc == NULL)
7865 {
7866 if (htab->root.dynobj == NULL)
7867 htab->root.dynobj = abfd;
7868
7869 sreloc = _bfd_elf_make_dynamic_reloc_section
0608afa7 7870 (sec, htab->root.dynobj, LOG_FILE_ALIGN, abfd, /*rela? */ TRUE);
a06ea964
NC		 7871
7872 if (sreloc == NULL)
7873 return FALSE;
7874 }
7875
7876 /* If this is a global symbol, we count the number of
7877 relocations we need for this symbol. */
7878 if (h != NULL)
7879 {
cec5225b
YZ		 7880 struct elf_aarch64_link_hash_entry *eh;
7881 eh = (struct elf_aarch64_link_hash_entry *) h;
a06ea964
NC		 7882 head = &eh->dyn_relocs;
7883 }
7884 else
7885 {
7886 /* Track dynamic relocs needed for local syms too.
7887 We really need local syms available to do this
7888 easily. Oh well. */
7889
7890 asection *s;
7891 void **vpp;
a06ea964
NC		 7892
7893 isym = bfd_sym_from_r_symndx (&htab->sym_cache,
7894 abfd, r_symndx);
7895 if (isym == NULL)
7896 return FALSE;
7897
7898 s = bfd_section_from_elf_index (abfd, isym->st_shndx);
7899 if (s == NULL)
7900 s = sec;
7901
7902 /* Beware of type punned pointers vs strict aliasing
7903 rules. */
7904 vpp = &(elf_section_data (s)->local_dynrel);
7905 head = (struct elf_dyn_relocs **) vpp;
7906 }
7907
7908 p = *head;
7909 if (p == NULL || p->sec != sec)
7910 {
986f0783 7911 size_t amt = sizeof *p;
a06ea964
NC		 7912 p = ((struct elf_dyn_relocs *)
7913 bfd_zalloc (htab->root.dynobj, amt));
7914 if (p == NULL)
7915 return FALSE;
7916 p->next = *head;
7917 *head = p;
7918 p->sec = sec;
7919 }
7920
7921 p->count += 1;
7922
6353d82b
JW		 7923 if (elfNN_aarch64_howto_table[howto_index].pc_relative)
7924 p->pc_count += 1;
a06ea964
NC		 7925 }
7926 break;
7927
7928 /* RR: We probably want to keep a consistency check that
7929 there are no dangling GOT_PAGE relocs. */
a6bb11b2 7930 case BFD_RELOC_AARCH64_ADR_GOT_PAGE:
7bcccb57 7931 case BFD_RELOC_AARCH64_GOT_LD_PREL19:
7018c030 7932 case BFD_RELOC_AARCH64_LD32_GOTPAGE_LO14:
7bcccb57 7933 case BFD_RELOC_AARCH64_LD32_GOT_LO12_NC:
a2e1db00 7934 case BFD_RELOC_AARCH64_LD64_GOTOFF_LO15:
99ad26cb 7935 case BFD_RELOC_AARCH64_LD64_GOTPAGE_LO15:
7bcccb57 7936 case BFD_RELOC_AARCH64_LD64_GOT_LO12_NC:
dc8008f5 7937 case BFD_RELOC_AARCH64_MOVW_GOTOFF_G0_NC:
74a1bfe1 7938 case BFD_RELOC_AARCH64_MOVW_GOTOFF_G1:
f955cccf 7939 case BFD_RELOC_AARCH64_TLSDESC_ADD_LO12:
7bcccb57 7940 case BFD_RELOC_AARCH64_TLSDESC_ADR_PAGE21:
389b8029 7941 case BFD_RELOC_AARCH64_TLSDESC_ADR_PREL21:
7bcccb57 7942 case BFD_RELOC_AARCH64_TLSDESC_LD32_LO12_NC:
f955cccf 7943 case BFD_RELOC_AARCH64_TLSDESC_LD64_LO12:
1ada945d 7944 case BFD_RELOC_AARCH64_TLSDESC_LD_PREL19:
0484b454
RL		 7945 case BFD_RELOC_AARCH64_TLSDESC_OFF_G0_NC:
7946 case BFD_RELOC_AARCH64_TLSDESC_OFF_G1:
a6bb11b2 7947 case BFD_RELOC_AARCH64_TLSGD_ADD_LO12_NC:
7bcccb57 7948 case BFD_RELOC_AARCH64_TLSGD_ADR_PAGE21:
3c12b054 7949 case BFD_RELOC_AARCH64_TLSGD_ADR_PREL21:
7ba7cfe4 7950 case BFD_RELOC_AARCH64_TLSGD_MOVW_G0_NC:
94facae3 7951 case BFD_RELOC_AARCH64_TLSGD_MOVW_G1:
a6bb11b2 7952 case BFD_RELOC_AARCH64_TLSIE_ADR_GOTTPREL_PAGE21:
a6bb11b2 7953 case BFD_RELOC_AARCH64_TLSIE_LD32_GOTTPREL_LO12_NC:
7bcccb57 7954 case BFD_RELOC_AARCH64_TLSIE_LD64_GOTTPREL_LO12_NC:
043bf05a 7955 case BFD_RELOC_AARCH64_TLSIE_LD_GOTTPREL_PREL19:
3b957e5b
RL		 7956 case BFD_RELOC_AARCH64_TLSIE_MOVW_GOTTPREL_G0_NC:
7957 case BFD_RELOC_AARCH64_TLSIE_MOVW_GOTTPREL_G1:
73f925cc 7958 case BFD_RELOC_AARCH64_TLSLD_ADD_LO12_NC:
f69e4920 7959 case BFD_RELOC_AARCH64_TLSLD_ADR_PAGE21:
77a69ff8 7960 case BFD_RELOC_AARCH64_TLSLD_ADR_PREL21:
a06ea964
NC		 7961 {
7962 unsigned got_type;
7963 unsigned old_got_type;
7964
a6bb11b2 7965 got_type = aarch64_reloc_got_type (bfd_r_type);
a06ea964
NC		 7966
7967 if (h)
7968 {
7969 h->got.refcount += 1;
cec5225b 7970 old_got_type = elf_aarch64_hash_entry (h)->got_type;
a06ea964
NC		 7971 }
7972 else
7973 {
7974 struct elf_aarch64_local_symbol *locals;
7975
cec5225b 7976 if (!elfNN_aarch64_allocate_local_symbols
a06ea964
NC		 7977 (abfd, symtab_hdr->sh_info))
7978 return FALSE;
7979
cec5225b 7980 locals = elf_aarch64_locals (abfd);
a06ea964
NC		 7981 BFD_ASSERT (r_symndx < symtab_hdr->sh_info);
7982 locals[r_symndx].got_refcount += 1;
7983 old_got_type = locals[r_symndx].got_type;
7984 }
7985
7986 /* If a variable is accessed with both general dynamic TLS
7987 methods, two slots may be created. */
7988 if (GOT_TLS_GD_ANY_P (old_got_type) && GOT_TLS_GD_ANY_P (got_type))
7989 got_type |= old_got_type;
7990
7991 /* We will already have issued an error message if there
7992 is a TLS/non-TLS mismatch, based on the symbol type.
7993 So just combine any TLS types needed. */
7994 if (old_got_type != GOT_UNKNOWN && old_got_type != GOT_NORMAL
7995 && got_type != GOT_NORMAL)
7996 got_type |= old_got_type;
7997
7998 /* If the symbol is accessed by both IE and GD methods, we
7999 are able to relax. Turn off the GD flag, without
8000 messing up with any other kind of TLS types that may be
8001 involved. */
8002 if ((got_type & GOT_TLS_IE) && GOT_TLS_GD_ANY_P (got_type))
8003 got_type &= ~ (GOT_TLSDESC_GD | GOT_TLS_GD);
8004
8005 if (old_got_type != got_type)
8006 {
8007 if (h != NULL)
cec5225b 8008 elf_aarch64_hash_entry (h)->got_type = got_type;
a06ea964
NC		 8009 else
8010 {
8011 struct elf_aarch64_local_symbol *locals;
cec5225b 8012 locals = elf_aarch64_locals (abfd);
a06ea964
NC		 8013 BFD_ASSERT (r_symndx < symtab_hdr->sh_info);
8014 locals[r_symndx].got_type = got_type;
8015 }
8016 }
8017
cc0efaa8
MS		 8018 if (htab->root.dynobj == NULL)
8019 htab->root.dynobj = abfd;
8020 if (! aarch64_elf_create_got_section (htab->root.dynobj, info))
8021 return FALSE;
a06ea964
NC		 8022 break;
8023 }
8024
a6bb11b2
YZ		 8025 case BFD_RELOC_AARCH64_CALL26:
8026 case BFD_RELOC_AARCH64_JUMP26:
a06ea964
NC		 8027 /* If this is a local symbol then we resolve it
8028 directly without creating a PLT entry. */
8029 if (h == NULL)
8030 continue;
8031
8032 h->needs_plt = 1;
1419bbe5
WN		 8033 if (h->plt.refcount <= 0)
8034 h->plt.refcount = 1;
8035 else
8036 h->plt.refcount += 1;
a06ea964 8037 break;
a6bb11b2
YZ		 8038
8039 default:
8040 break;
a06ea964
NC		 8041 }
8042 }
a6bb11b2 8043
a06ea964
NC		 8044 return TRUE;
8045}
8046
8047/* Treat mapping symbols as special target symbols. */
8048
8049static bfd_boolean
cec5225b 8050elfNN_aarch64_is_target_special_symbol (bfd *abfd ATTRIBUTE_UNUSED,
a06ea964
NC		 8051 asymbol *sym)
8052{
8053 return bfd_is_aarch64_special_symbol_name (sym->name,
8054 BFD_AARCH64_SPECIAL_SYM_TYPE_ANY);
8055}
8056
e7679060
AM		 8057/* If the ELF symbol SYM might be a function in SEC, return the
8058 function size and set *CODE_OFF to the function's entry point,
8059 otherwise return zero. */
a06ea964 8060
e7679060
AM		 8061static bfd_size_type
8062elfNN_aarch64_maybe_function_sym (const asymbol *sym, asection *sec,
8063 bfd_vma *code_off)
8064{
8065 bfd_size_type size;
a06ea964 8066
e7679060
AM		 8067 if ((sym->flags & (BSF_SECTION_SYM | BSF_FILE | BSF_OBJECT
8068 | BSF_THREAD_LOCAL | BSF_RELC | BSF_SRELC)) != 0
8069 || sym->section != sec)
8070 return 0;
a06ea964 8071
e7679060
AM		 8072 if (!(sym->flags & BSF_SYNTHETIC))
8073 switch (ELF_ST_TYPE (((elf_symbol_type *) sym)->internal_elf_sym.st_info))
8074 {
a06ea964
NC		 8075 case STT_FUNC:
8076 case STT_NOTYPE:
a06ea964 8077 break;
e7679060
AM		 8078 default:
8079 return 0;
8080 }
a06ea964 8081
e7679060
AM		 8082 if ((sym->flags & BSF_LOCAL)
8083 && bfd_is_aarch64_special_symbol_name (sym->name,
8084 BFD_AARCH64_SPECIAL_SYM_TYPE_ANY))
8085 return 0;
a06ea964 8086
e7679060
AM		 8087 *code_off = sym->value;
8088 size = 0;
8089 if (!(sym->flags & BSF_SYNTHETIC))
8090 size = ((elf_symbol_type *) sym)->internal_elf_sym.st_size;
8091 if (size == 0)
8092 size = 1;
8093 return size;
a06ea964
NC		 8094}
8095
8096static bfd_boolean
cec5225b 8097elfNN_aarch64_find_inliner_info (bfd *abfd,
a06ea964
NC		 8098 const char **filename_ptr,
8099 const char **functionname_ptr,
8100 unsigned int *line_ptr)
8101{
8102 bfd_boolean found;
8103 found = _bfd_dwarf2_find_inliner_info
8104 (abfd, filename_ptr,
8105 functionname_ptr, line_ptr, &elf_tdata (abfd)->dwarf2_find_line_info);
8106 return found;
8107}
8108
8109
ed7e9d0b
AM		 8110static bfd_boolean
8111elfNN_aarch64_init_file_header (bfd *abfd, struct bfd_link_info *link_info)
a06ea964
NC		 8112{
8113 Elf_Internal_Ehdr *i_ehdrp; /* ELF file header, internal form. */
8114
ed7e9d0b
AM		 8115 if (!_bfd_elf_init_file_header (abfd, link_info))
8116 return FALSE;
8117
a06ea964 8118 i_ehdrp = elf_elfheader (abfd);
a06ea964 8119 i_ehdrp->e_ident[EI_ABIVERSION] = AARCH64_ELF_ABI_VERSION;
ed7e9d0b 8120 return TRUE;
a06ea964
NC		 8121}
8122
8123static enum elf_reloc_type_class
cec5225b 8124elfNN_aarch64_reloc_type_class (const struct bfd_link_info *info ATTRIBUTE_UNUSED,
7e612e98
AM		 8125 const asection *rel_sec ATTRIBUTE_UNUSED,
8126 const Elf_Internal_Rela *rela)
a06ea964 8127{
f2e6a843
SN		 8128 struct elf_aarch64_link_hash_table *htab = elf_aarch64_hash_table (info);
8129
8130 if (htab->root.dynsym != NULL
8131 && htab->root.dynsym->contents != NULL)
8132 {
8133 /* Check relocation against STT_GNU_IFUNC symbol if there are
8134 dynamic symbols. */
8135 bfd *abfd = info->output_bfd;
8136 const struct elf_backend_data *bed = get_elf_backend_data (abfd);
8137 unsigned long r_symndx = ELFNN_R_SYM (rela->r_info);
8138 if (r_symndx != STN_UNDEF)
8139 {
8140 Elf_Internal_Sym sym;
8141 if (!bed->s->swap_symbol_in (abfd,
8142 (htab->root.dynsym->contents
8143 + r_symndx * bed->s->sizeof_sym),
8144 0, &sym))
8145 {
8146 /* xgettext:c-format */
871b3ab2 8147 _bfd_error_handler (_("%pB symbol number %lu references"
f2e6a843
SN		 8148 " nonexistent SHT_SYMTAB_SHNDX section"),
8149 abfd, r_symndx);
8150 /* Ideally an error class should be returned here. */
8151 }
8152 else if (ELF_ST_TYPE (sym.st_info) == STT_GNU_IFUNC)
8153 return reloc_class_ifunc;
8154 }
8155 }
8156
cec5225b 8157 switch ((int) ELFNN_R_TYPE (rela->r_info))
a06ea964 8158 {
f2e6a843
SN		 8159 case AARCH64_R (IRELATIVE):
8160 return reloc_class_ifunc;
a6bb11b2 8161 case AARCH64_R (RELATIVE):
a06ea964 8162 return reloc_class_relative;
a6bb11b2 8163 case AARCH64_R (JUMP_SLOT):
a06ea964 8164 return reloc_class_plt;
a6bb11b2 8165 case AARCH64_R (COPY):
a06ea964
NC		 8166 return reloc_class_copy;
8167 default:
8168 return reloc_class_normal;
8169 }
8170}
8171
a06ea964
NC		 8172/* Handle an AArch64 specific section when reading an object file. This is
8173 called when bfd_section_from_shdr finds a section with an unknown
8174 type. */
8175
8176static bfd_boolean
cec5225b 8177elfNN_aarch64_section_from_shdr (bfd *abfd,
a06ea964
NC		 8178 Elf_Internal_Shdr *hdr,
8179 const char *name, int shindex)
8180{
8181 /* There ought to be a place to keep ELF backend specific flags, but
8182 at the moment there isn't one. We just keep track of the
8183 sections by their name, instead. Fortunately, the ABI gives
8184 names for all the AArch64 specific sections, so we will probably get
8185 away with this. */
8186 switch (hdr->sh_type)
8187 {
8188 case SHT_AARCH64_ATTRIBUTES:
8189 break;
8190
8191 default:
8192 return FALSE;
8193 }
8194
8195 if (!_bfd_elf_make_section_from_shdr (abfd, hdr, name, shindex))
8196 return FALSE;
8197
8198 return TRUE;
8199}
8200
8201/* A structure used to record a list of sections, independently
8202 of the next and prev fields in the asection structure. */
8203typedef struct section_list
8204{
8205 asection *sec;
8206 struct section_list *next;
8207 struct section_list *prev;
8208}
8209section_list;
8210
8211/* Unfortunately we need to keep a list of sections for which
8212 an _aarch64_elf_section_data structure has been allocated. This
cec5225b 8213 is because it is possible for functions like elfNN_aarch64_write_section
a06ea964
NC		 8214 to be called on a section which has had an elf_data_structure
8215 allocated for it (and so the used_by_bfd field is valid) but
8216 for which the AArch64 extended version of this structure - the
8217 _aarch64_elf_section_data structure - has not been allocated. */
8218static section_list *sections_with_aarch64_elf_section_data = NULL;
8219
8220static void
8221record_section_with_aarch64_elf_section_data (asection *sec)
8222{
8223 struct section_list *entry;
8224
8225 entry = bfd_malloc (sizeof (*entry));
8226 if (entry == NULL)
8227 return;
8228 entry->sec = sec;
8229 entry->next = sections_with_aarch64_elf_section_data;
8230 entry->prev = NULL;
8231 if (entry->next != NULL)
8232 entry->next->prev = entry;
8233 sections_with_aarch64_elf_section_data = entry;
8234}
8235
8236static struct section_list *
8237find_aarch64_elf_section_entry (asection *sec)
8238{
8239 struct section_list *entry;
8240 static struct section_list *last_entry = NULL;
8241
8242 /* This is a short cut for the typical case where the sections are added
8243 to the sections_with_aarch64_elf_section_data list in forward order and
8244 then looked up here in backwards order. This makes a real difference
8245 to the ld-srec/sec64k.exp linker test. */
8246 entry = sections_with_aarch64_elf_section_data;
8247 if (last_entry != NULL)
8248 {
8249 if (last_entry->sec == sec)
8250 entry = last_entry;
8251 else if (last_entry->next != NULL && last_entry->next->sec == sec)
8252 entry = last_entry->next;
8253 }
8254
8255 for (; entry; entry = entry->next)
8256 if (entry->sec == sec)
8257 break;
8258
8259 if (entry)
8260 /* Record the entry prior to this one - it is the entry we are
8261 most likely to want to locate next time. Also this way if we
8262 have been called from
8263 unrecord_section_with_aarch64_elf_section_data () we will not
8264 be caching a pointer that is about to be freed. */
8265 last_entry = entry->prev;
8266
8267 return entry;
8268}
8269
8270static void
8271unrecord_section_with_aarch64_elf_section_data (asection *sec)
8272{
8273 struct section_list *entry;
8274
8275 entry = find_aarch64_elf_section_entry (sec);
8276
8277 if (entry)
8278 {
8279 if (entry->prev != NULL)
8280 entry->prev->next = entry->next;
8281 if (entry->next != NULL)
8282 entry->next->prev = entry->prev;
8283 if (entry == sections_with_aarch64_elf_section_data)
8284 sections_with_aarch64_elf_section_data = entry->next;
8285 free (entry);
8286 }
8287}
8288
8289
8290typedef struct
8291{
8292 void *finfo;
8293 struct bfd_link_info *info;
8294 asection *sec;
8295 int sec_shndx;
8296 int (*func) (void *, const char *, Elf_Internal_Sym *,
8297 asection *, struct elf_link_hash_entry *);
8298} output_arch_syminfo;
8299
8300enum map_symbol_type
8301{
8302 AARCH64_MAP_INSN,
8303 AARCH64_MAP_DATA
8304};
8305
8306
8307/* Output a single mapping symbol. */
8308
8309static bfd_boolean
cec5225b 8310elfNN_aarch64_output_map_sym (output_arch_syminfo *osi,
a06ea964
NC		 8311 enum map_symbol_type type, bfd_vma offset)
8312{
8313 static const char *names[2] = { "$x", "$d" };
8314 Elf_Internal_Sym sym;
8315
8316 sym.st_value = (osi->sec->output_section->vma
8317 + osi->sec->output_offset + offset);
8318 sym.st_size = 0;
8319 sym.st_other = 0;
8320 sym.st_info = ELF_ST_INFO (STB_LOCAL, STT_NOTYPE);
8321 sym.st_shndx = osi->sec_shndx;
8322 return osi->func (osi->finfo, names[type], &sym, osi->sec, NULL) == 1;
8323}
8324
a06ea964
NC		 8325/* Output a single local symbol for a generated stub. */
8326
8327static bfd_boolean
cec5225b 8328elfNN_aarch64_output_stub_sym (output_arch_syminfo *osi, const char *name,
a06ea964
NC		 8329 bfd_vma offset, bfd_vma size)
8330{
8331 Elf_Internal_Sym sym;
8332
8333 sym.st_value = (osi->sec->output_section->vma
8334 + osi->sec->output_offset + offset);
8335 sym.st_size = size;
8336 sym.st_other = 0;
8337 sym.st_info = ELF_ST_INFO (STB_LOCAL, STT_FUNC);
8338 sym.st_shndx = osi->sec_shndx;
8339 return osi->func (osi->finfo, name, &sym, osi->sec, NULL) == 1;
8340}
8341
8342static bfd_boolean
8343aarch64_map_one_stub (struct bfd_hash_entry *gen_entry, void *in_arg)
8344{
cec5225b 8345 struct elf_aarch64_stub_hash_entry *stub_entry;
a06ea964
NC		 8346 asection *stub_sec;
8347 bfd_vma addr;
8348 char *stub_name;
8349 output_arch_syminfo *osi;
8350
8351 /* Massage our args to the form they really have. */
cec5225b 8352 stub_entry = (struct elf_aarch64_stub_hash_entry *) gen_entry;
a06ea964
NC		 8353 osi = (output_arch_syminfo *) in_arg;
8354
8355 stub_sec = stub_entry->stub_sec;
8356
8357 /* Ensure this stub is attached to the current section being
8358 processed. */
8359 if (stub_sec != osi->sec)
8360 return TRUE;
8361
8362 addr = (bfd_vma) stub_entry->stub_offset;
8363
8364 stub_name = stub_entry->output_name;
8365
8366 switch (stub_entry->stub_type)
8367 {
8368 case aarch64_stub_adrp_branch:
cec5225b 8369 if (!elfNN_aarch64_output_stub_sym (osi, stub_name, addr,
a06ea964
NC		 8370 sizeof (aarch64_adrp_branch_stub)))
8371 return FALSE;
cec5225b 8372 if (!elfNN_aarch64_output_map_sym (osi, AARCH64_MAP_INSN, addr))
a06ea964
NC		 8373 return FALSE;
8374 break;
8375 case aarch64_stub_long_branch:
cec5225b 8376 if (!elfNN_aarch64_output_stub_sym
a06ea964
NC		 8377 (osi, stub_name, addr, sizeof (aarch64_long_branch_stub)))
8378 return FALSE;
cec5225b 8379 if (!elfNN_aarch64_output_map_sym (osi, AARCH64_MAP_INSN, addr))
a06ea964 8380 return FALSE;
cec5225b 8381 if (!elfNN_aarch64_output_map_sym (osi, AARCH64_MAP_DATA, addr + 16))
a06ea964
NC		 8382 return FALSE;
8383 break;
68fcca92
JW		 8384 case aarch64_stub_erratum_835769_veneer:
8385 if (!elfNN_aarch64_output_stub_sym (osi, stub_name, addr,
8386 sizeof (aarch64_erratum_835769_stub)))
8387 return FALSE;
8388 if (!elfNN_aarch64_output_map_sym (osi, AARCH64_MAP_INSN, addr))
8389 return FALSE;
8390 break;
4106101c
MS		 8391 case aarch64_stub_erratum_843419_veneer:
8392 if (!elfNN_aarch64_output_stub_sym (osi, stub_name, addr,
8393 sizeof (aarch64_erratum_843419_stub)))
8394 return FALSE;
8395 if (!elfNN_aarch64_output_map_sym (osi, AARCH64_MAP_INSN, addr))
8396 return FALSE;
8397 break;
9fca35fc
TC		 8398 case aarch64_stub_none:
8399 break;
4106101c 8400
a06ea964 8401 default:
8e2fe09f 8402 abort ();
a06ea964
NC		 8403 }
8404
8405 return TRUE;
8406}
8407
8408/* Output mapping symbols for linker generated sections. */
8409
8410static bfd_boolean
cec5225b 8411elfNN_aarch64_output_arch_local_syms (bfd *output_bfd,
a06ea964
NC		 8412 struct bfd_link_info *info,
8413 void *finfo,
8414 int (*func) (void *, const char *,
8415 Elf_Internal_Sym *,
8416 asection *,
8417 struct elf_link_hash_entry
8418 *))
8419{
8420 output_arch_syminfo osi;
cec5225b 8421 struct elf_aarch64_link_hash_table *htab;
a06ea964 8422
cec5225b 8423 htab = elf_aarch64_hash_table (info);
a06ea964
NC		 8424
8425 osi.finfo = finfo;
8426 osi.info = info;
8427 osi.func = func;
8428
8429 /* Long calls stubs. */
8430 if (htab->stub_bfd && htab->stub_bfd->sections)
8431 {
8432 asection *stub_sec;
8433
8434 for (stub_sec = htab->stub_bfd->sections;
8435 stub_sec != NULL; stub_sec = stub_sec->next)
8436 {
8437 /* Ignore non-stub sections. */
8438 if (!strstr (stub_sec->name, STUB_SUFFIX))
8439 continue;
8440
8441 osi.sec = stub_sec;
8442
8443 osi.sec_shndx = _bfd_elf_section_from_bfd_section
8444 (output_bfd, osi.sec->output_section);
8445
61865519
MS		 8446 /* The first instruction in a stub is always a branch. */
8447 if (!elfNN_aarch64_output_map_sym (&osi, AARCH64_MAP_INSN, 0))
8448 return FALSE;
8449
a06ea964
NC		 8450 bfd_hash_traverse (&htab->stub_hash_table, aarch64_map_one_stub,
8451 &osi);
8452 }
8453 }
8454
8455 /* Finally, output mapping symbols for the PLT. */
8456 if (!htab->root.splt || htab->root.splt->size == 0)
8457 return TRUE;
8458
a06ea964
NC		 8459 osi.sec_shndx = _bfd_elf_section_from_bfd_section
8460 (output_bfd, htab->root.splt->output_section);
8461 osi.sec = htab->root.splt;
8462
73524045 8463 elfNN_aarch64_output_map_sym (&osi, AARCH64_MAP_INSN, 0);
a06ea964
NC		 8464
8465 return TRUE;
8466
8467}
8468
8469/* Allocate target specific section data. */
8470
8471static bfd_boolean
cec5225b 8472elfNN_aarch64_new_section_hook (bfd *abfd, asection *sec)
a06ea964
NC		 8473{
8474 if (!sec->used_by_bfd)
8475 {
8476 _aarch64_elf_section_data *sdata;
986f0783 8477 size_t amt = sizeof (*sdata);
a06ea964
NC		 8478
8479 sdata = bfd_zalloc (abfd, amt);
8480 if (sdata == NULL)
8481 return FALSE;
8482 sec->used_by_bfd = sdata;
8483 }
8484
8485 record_section_with_aarch64_elf_section_data (sec);
8486
8487 return _bfd_elf_new_section_hook (abfd, sec);
8488}
8489
8490
8491static void
8492unrecord_section_via_map_over_sections (bfd *abfd ATTRIBUTE_UNUSED,
8493 asection *sec,
8494 void *ignore ATTRIBUTE_UNUSED)
8495{
8496 unrecord_section_with_aarch64_elf_section_data (sec);
8497}
8498
8499static bfd_boolean
cec5225b 8500elfNN_aarch64_close_and_cleanup (bfd *abfd)
a06ea964
NC		 8501{
8502 if (abfd->sections)
8503 bfd_map_over_sections (abfd,
8504 unrecord_section_via_map_over_sections, NULL);
8505
8506 return _bfd_elf_close_and_cleanup (abfd);
8507}
8508
8509static bfd_boolean
cec5225b 8510elfNN_aarch64_bfd_free_cached_info (bfd *abfd)
a06ea964
NC		 8511{
8512 if (abfd->sections)
8513 bfd_map_over_sections (abfd,
8514 unrecord_section_via_map_over_sections, NULL);
8515
8516 return _bfd_free_cached_info (abfd);
8517}
8518
a06ea964
NC		 8519/* Create dynamic sections. This is different from the ARM backend in that
8520 the got, plt, gotplt and their relocation sections are all created in the
8521 standard part of the bfd elf backend. */
8522
8523static bfd_boolean
cec5225b 8524elfNN_aarch64_create_dynamic_sections (bfd *dynobj,
a06ea964
NC		 8525 struct bfd_link_info *info)
8526{
cc0efaa8
MS		 8527 /* We need to create .got section. */
8528 if (!aarch64_elf_create_got_section (dynobj, info))
8529 return FALSE;
a06ea964 8530
9d19e4fd 8531 return _bfd_elf_create_dynamic_sections (dynobj, info);
a06ea964
NC		 8532}
8533
8534
8535/* Allocate space in .plt, .got and associated reloc sections for
8536 dynamic relocs. */
8537
8538static bfd_boolean
cec5225b 8539elfNN_aarch64_allocate_dynrelocs (struct elf_link_hash_entry *h, void *inf)
a06ea964
NC		 8540{
8541 struct bfd_link_info *info;
cec5225b
YZ		 8542 struct elf_aarch64_link_hash_table *htab;
8543 struct elf_aarch64_link_hash_entry *eh;
a06ea964
NC		 8544 struct elf_dyn_relocs *p;
8545
8546 /* An example of a bfd_link_hash_indirect symbol is versioned
8547 symbol. For example: __gxx_personality_v0(bfd_link_hash_indirect)
8548 -> __gxx_personality_v0(bfd_link_hash_defined)
8549
8550 There is no need to process bfd_link_hash_indirect symbols here
8551 because we will also be presented with the concrete instance of
cec5225b 8552 the symbol and elfNN_aarch64_copy_indirect_symbol () will have been
a06ea964 8553 called to copy all relevant data from the generic to the concrete
2d0ca824 8554 symbol instance. */
a06ea964
NC		 8555 if (h->root.type == bfd_link_hash_indirect)
8556 return TRUE;
8557
8558 if (h->root.type == bfd_link_hash_warning)
8559 h = (struct elf_link_hash_entry *) h->root.u.i.link;
8560
8561 info = (struct bfd_link_info *) inf;
cec5225b 8562 htab = elf_aarch64_hash_table (info);
a06ea964 8563
1419bbe5
WN		 8564 /* Since STT_GNU_IFUNC symbol must go through PLT, we handle it
8565 here if it is defined and referenced in a non-shared object. */
8566 if (h->type == STT_GNU_IFUNC
8567 && h->def_regular)
8568 return TRUE;
8569 else if (htab->root.dynamic_sections_created && h->plt.refcount > 0)
a06ea964
NC		 8570 {
8571 /* Make sure this symbol is output as a dynamic symbol.
07d6d2b8 8572 Undefined weak syms won't yet be marked as dynamic. */
ff07562f
JW		 8573 if (h->dynindx == -1 && !h->forced_local
8574 && h->root.type == bfd_link_hash_undefweak)
a06ea964
NC		 8575 {
8576 if (!bfd_elf_link_record_dynamic_symbol (info, h))
8577 return FALSE;
8578 }
8579
0e1862bb 8580 if (bfd_link_pic (info) || WILL_CALL_FINISH_DYNAMIC_SYMBOL (1, 0, h))
a06ea964
NC		 8581 {
8582 asection *s = htab->root.splt;
8583
8584 /* If this is the first .plt entry, make room for the special
8585 first entry. */
8586 if (s->size == 0)
8587 s->size += htab->plt_header_size;
8588
8589 h->plt.offset = s->size;
8590
8591 /* If this symbol is not defined in a regular file, and we are
8592 not generating a shared library, then set the symbol to this
8593 location in the .plt. This is required to make function
8594 pointers compare as equal between the normal executable and
8595 the shared library. */
0e1862bb 8596 if (!bfd_link_pic (info) && !h->def_regular)
a06ea964
NC		 8597 {
8598 h->root.u.def.section = s;
8599 h->root.u.def.value = h->plt.offset;
8600 }
8601
8602 /* Make room for this entry. For now we only create the
8603 small model PLT entries. We later need to find a way
8604 of relaxing into these from the large model PLT entries. */
37c18eed 8605 s->size += htab->plt_entry_size;
a06ea964
NC		 8606
8607 /* We also need to make an entry in the .got.plt section, which
8608 will be placed in the .got section by the linker script. */
8609 htab->root.sgotplt->size += GOT_ENTRY_SIZE;
8610
8611 /* We also need to make an entry in the .rela.plt section. */
8612 htab->root.srelplt->size += RELOC_SIZE (htab);
8613
8614 /* We need to ensure that all GOT entries that serve the PLT
8615 are consecutive with the special GOT slots [0] [1] and
8616 [2]. Any addtional relocations, such as
8617 R_AARCH64_TLSDESC, must be placed after the PLT related
8618 entries. We abuse the reloc_count such that during
8619 sizing we adjust reloc_count to indicate the number of
8620 PLT related reserved entries. In subsequent phases when
8621 filling in the contents of the reloc entries, PLT related
8622 entries are placed by computing their PLT index (0
8623 .. reloc_count). While other none PLT relocs are placed
8624 at the slot indicated by reloc_count and reloc_count is
8625 updated. */
8626
8627 htab->root.srelplt->reloc_count++;
823710d5
SN		 8628
8629 /* Mark the DSO in case R_<CLS>_JUMP_SLOT relocs against
8630 variant PCS symbols are present. */
8631 if (h->other & STO_AARCH64_VARIANT_PCS)
8632 htab->variant_pcs = 1;
8633
a06ea964
NC		 8634 }
8635 else
8636 {
8637 h->plt.offset = (bfd_vma) - 1;
8638 h->needs_plt = 0;
8639 }
8640 }
8641 else
8642 {
8643 h->plt.offset = (bfd_vma) - 1;
8644 h->needs_plt = 0;
8645 }
8646
cec5225b 8647 eh = (struct elf_aarch64_link_hash_entry *) h;
a06ea964
NC		 8648 eh->tlsdesc_got_jump_table_offset = (bfd_vma) - 1;
8649
8650 if (h->got.refcount > 0)
8651 {
8652 bfd_boolean dyn;
cec5225b 8653 unsigned got_type = elf_aarch64_hash_entry (h)->got_type;
a06ea964
NC		 8654
8655 h->got.offset = (bfd_vma) - 1;
8656
8657 dyn = htab->root.dynamic_sections_created;
8658
8659 /* Make sure this symbol is output as a dynamic symbol.
07d6d2b8 8660 Undefined weak syms won't yet be marked as dynamic. */
ff07562f
JW		 8661 if (dyn && h->dynindx == -1 && !h->forced_local
8662 && h->root.type == bfd_link_hash_undefweak)
a06ea964
NC		 8663 {
8664 if (!bfd_elf_link_record_dynamic_symbol (info, h))
8665 return FALSE;
8666 }
8667
8668 if (got_type == GOT_UNKNOWN)
8669 {
8670 }
8671 else if (got_type == GOT_NORMAL)
8672 {
8673 h->got.offset = htab->root.sgot->size;
8674 htab->root.sgot->size += GOT_ENTRY_SIZE;
8675 if ((ELF_ST_VISIBILITY (h->other) == STV_DEFAULT
8676 || h->root.type != bfd_link_hash_undefweak)
0e1862bb 8677 && (bfd_link_pic (info)
a377ae2a
SN		 8678 || WILL_CALL_FINISH_DYNAMIC_SYMBOL (dyn, 0, h))
8679 /* Undefined weak symbol in static PIE resolves to 0 without
8680 any dynamic relocations. */
8681 && !UNDEFWEAK_NO_DYNAMIC_RELOC (info, h))
a06ea964
NC		 8682 {
8683 htab->root.srelgot->size += RELOC_SIZE (htab);
8684 }
8685 }
8686 else
8687 {
8688 int indx;
8689 if (got_type & GOT_TLSDESC_GD)
8690 {
8691 eh->tlsdesc_got_jump_table_offset =
8692 (htab->root.sgotplt->size
8693 - aarch64_compute_jump_table_size (htab));
8694 htab->root.sgotplt->size += GOT_ENTRY_SIZE * 2;
8695 h->got.offset = (bfd_vma) - 2;
8696 }
8697
8698 if (got_type & GOT_TLS_GD)
8699 {
8700 h->got.offset = htab->root.sgot->size;
8701 htab->root.sgot->size += GOT_ENTRY_SIZE * 2;
8702 }
8703
8704 if (got_type & GOT_TLS_IE)
8705 {
8706 h->got.offset = htab->root.sgot->size;
8707 htab->root.sgot->size += GOT_ENTRY_SIZE;
8708 }
8709
8710 indx = h && h->dynindx != -1 ? h->dynindx : 0;
8711 if ((ELF_ST_VISIBILITY (h->other) == STV_DEFAULT
8712 || h->root.type != bfd_link_hash_undefweak)
6dda7875 8713 && (!bfd_link_executable (info)
a06ea964
NC		 8714 || indx != 0
8715 || WILL_CALL_FINISH_DYNAMIC_SYMBOL (dyn, 0, h)))
8716 {
8717 if (got_type & GOT_TLSDESC_GD)
8718 {
8719 htab->root.srelplt->size += RELOC_SIZE (htab);
8720 /* Note reloc_count not incremented here! We have
8721 already adjusted reloc_count for this relocation
8722 type. */
8723
8724 /* TLSDESC PLT is now needed, but not yet determined. */
8725 htab->tlsdesc_plt = (bfd_vma) - 1;
8726 }
8727
8728 if (got_type & GOT_TLS_GD)
8729 htab->root.srelgot->size += RELOC_SIZE (htab) * 2;
8730
8731 if (got_type & GOT_TLS_IE)
8732 htab->root.srelgot->size += RELOC_SIZE (htab);
8733 }
8734 }
8735 }
8736 else
8737 {
8738 h->got.offset = (bfd_vma) - 1;
8739 }
8740
8741 if (eh->dyn_relocs == NULL)
8742 return TRUE;
8743
8744 /* In the shared -Bsymbolic case, discard space allocated for
8745 dynamic pc-relative relocs against symbols which turn out to be
8746 defined in regular objects. For the normal shared case, discard
8747 space for pc-relative relocs that have become local due to symbol
8748 visibility changes. */
8749
0e1862bb 8750 if (bfd_link_pic (info))
a06ea964
NC		 8751 {
8752 /* Relocs that use pc_count are those that appear on a call
07d6d2b8
AM		 8753 insn, or certain REL relocs that can generated via assembly.
8754 We want calls to protected symbols to resolve directly to the
8755 function rather than going via the plt. If people want
8756 function pointer comparisons to work as expected then they
8757 should avoid writing weird assembly. */
a06ea964
NC		 8758 if (SYMBOL_CALLS_LOCAL (info, h))
8759 {
8760 struct elf_dyn_relocs **pp;
8761
8762 for (pp = &eh->dyn_relocs; (p = *pp) != NULL;)
8763 {
8764 p->count -= p->pc_count;
8765 p->pc_count = 0;
8766 if (p->count == 0)
8767 *pp = p->next;
8768 else
8769 pp = &p->next;
8770 }
8771 }
8772
8773 /* Also discard relocs on undefined weak syms with non-default
07d6d2b8 8774 visibility. */
a06ea964
NC		 8775 if (eh->dyn_relocs != NULL && h->root.type == bfd_link_hash_undefweak)
8776 {
ddb7fd0f
L		 8777 if (ELF_ST_VISIBILITY (h->other) != STV_DEFAULT
8778 || UNDEFWEAK_NO_DYNAMIC_RELOC (info, h))
a06ea964
NC		 8779 eh->dyn_relocs = NULL;
8780
8781 /* Make sure undefined weak symbols are output as a dynamic
8782 symbol in PIEs. */
8783 else if (h->dynindx == -1
8784 && !h->forced_local
ff07562f 8785 && h->root.type == bfd_link_hash_undefweak
a06ea964
NC		 8786 && !bfd_elf_link_record_dynamic_symbol (info, h))
8787 return FALSE;
8788 }
8789
8790 }
8791 else if (ELIMINATE_COPY_RELOCS)
8792 {
8793 /* For the non-shared case, discard space for relocs against
07d6d2b8
AM		 8794 symbols which turn out to need copy relocs or are not
8795 dynamic. */
a06ea964
NC		 8796
8797 if (!h->non_got_ref
8798 && ((h->def_dynamic
8799 && !h->def_regular)
8800 || (htab->root.dynamic_sections_created
8801 && (h->root.type == bfd_link_hash_undefweak
8802 || h->root.type == bfd_link_hash_undefined))))
8803 {
8804 /* Make sure this symbol is output as a dynamic symbol.
8805 Undefined weak syms won't yet be marked as dynamic. */
8806 if (h->dynindx == -1
8807 && !h->forced_local
ff07562f 8808 && h->root.type == bfd_link_hash_undefweak
a06ea964
NC		 8809 && !bfd_elf_link_record_dynamic_symbol (info, h))
8810 return FALSE;
8811
8812 /* If that succeeded, we know we'll be keeping all the
8813 relocs. */
8814 if (h->dynindx != -1)
8815 goto keep;
8816 }
8817
8818 eh->dyn_relocs = NULL;
8819
8820 keep:;
8821 }
8822
8823 /* Finally, allocate space. */
8824 for (p = eh->dyn_relocs; p != NULL; p = p->next)
8825 {
8826 asection *sreloc;
8827
8828 sreloc = elf_section_data (p->sec)->sreloc;
8829
8830 BFD_ASSERT (sreloc != NULL);
8831
8832 sreloc->size += p->count * RELOC_SIZE (htab);
8833 }
8834
8835 return TRUE;
8836}
8837
1419bbe5
WN		 8838/* Allocate space in .plt, .got and associated reloc sections for
8839 ifunc dynamic relocs. */
8840
8841static bfd_boolean
8842elfNN_aarch64_allocate_ifunc_dynrelocs (struct elf_link_hash_entry *h,
8843 void *inf)
8844{
8845 struct bfd_link_info *info;
8846 struct elf_aarch64_link_hash_table *htab;
8847 struct elf_aarch64_link_hash_entry *eh;
8848
8849 /* An example of a bfd_link_hash_indirect symbol is versioned
8850 symbol. For example: __gxx_personality_v0(bfd_link_hash_indirect)
8851 -> __gxx_personality_v0(bfd_link_hash_defined)
8852
8853 There is no need to process bfd_link_hash_indirect symbols here
8854 because we will also be presented with the concrete instance of
8855 the symbol and elfNN_aarch64_copy_indirect_symbol () will have been
8856 called to copy all relevant data from the generic to the concrete
2d0ca824 8857 symbol instance. */
1419bbe5
WN		 8858 if (h->root.type == bfd_link_hash_indirect)
8859 return TRUE;
8860
8861 if (h->root.type == bfd_link_hash_warning)
8862 h = (struct elf_link_hash_entry *) h->root.u.i.link;
8863
8864 info = (struct bfd_link_info *) inf;
8865 htab = elf_aarch64_hash_table (info);
8866
8867 eh = (struct elf_aarch64_link_hash_entry *) h;
8868
8869 /* Since STT_GNU_IFUNC symbol must go through PLT, we handle it
8870 here if it is defined and referenced in a non-shared object. */
8871 if (h->type == STT_GNU_IFUNC
8872 && h->def_regular)
8873 return _bfd_elf_allocate_ifunc_dyn_relocs (info, h,
8874 &eh->dyn_relocs,
2df3368d 8875 NULL,
1419bbe5
WN		 8876 htab->plt_entry_size,
8877 htab->plt_header_size,
233cc9c1
L		 8878 GOT_ENTRY_SIZE,
8879 FALSE);
1419bbe5
WN		 8880 return TRUE;
8881}
8882
1419bbe5
WN		 8883/* Allocate space in .plt, .got and associated reloc sections for
8884 local ifunc dynamic relocs. */
8885
8886static bfd_boolean
8887elfNN_aarch64_allocate_local_ifunc_dynrelocs (void **slot, void *inf)
8888{
8889 struct elf_link_hash_entry *h
8890 = (struct elf_link_hash_entry *) *slot;
8891
8892 if (h->type != STT_GNU_IFUNC
8893 || !h->def_regular
8894 || !h->ref_regular
8895 || !h->forced_local
8896 || h->root.type != bfd_link_hash_defined)
8897 abort ();
8898
8899 return elfNN_aarch64_allocate_ifunc_dynrelocs (h, inf);
8900}
a06ea964 8901
63c1f59d
AM		 8902/* Set DF_TEXTREL if we find any dynamic relocs that apply to
8903 read-only sections. */
c2170589
JW		 8904
8905static bfd_boolean
63c1f59d 8906maybe_set_textrel (struct elf_link_hash_entry *h, void *info_p)
c2170589 8907{
63c1f59d 8908 asection *sec;
c2170589 8909
63c1f59d
AM		 8910 if (h->root.type == bfd_link_hash_indirect)
8911 return TRUE;
c2170589 8912
63c1f59d
AM		 8913 sec = readonly_dynrelocs (h);
8914 if (sec != NULL)
8915 {
8916 struct bfd_link_info *info = (struct bfd_link_info *) info_p;
c2170589 8917
63c1f59d
AM		 8918 info->flags |= DF_TEXTREL;
8919 info->callbacks->minfo
c1c8c1ef 8920 (_("%pB: dynamic relocation against `%pT' in read-only section `%pA'\n"),
63c1f59d 8921 sec->owner, h->root.root.string, sec);
c2170589 8922
63c1f59d
AM		 8923 /* Not an error, just cut short the traversal. */
8924 return FALSE;
c2170589
JW		 8925 }
8926 return TRUE;
8927}
8928
a06ea964
NC		 8929/* This is the most important function of all . Innocuosly named
8930 though ! */
2d0ca824 8931
a06ea964 8932static bfd_boolean
cec5225b 8933elfNN_aarch64_size_dynamic_sections (bfd *output_bfd ATTRIBUTE_UNUSED,
a06ea964
NC		 8934 struct bfd_link_info *info)
8935{
cec5225b 8936 struct elf_aarch64_link_hash_table *htab;
a06ea964
NC		 8937 bfd *dynobj;
8938 asection *s;
8939 bfd_boolean relocs;
8940 bfd *ibfd;
8941
cec5225b 8942 htab = elf_aarch64_hash_table ((info));
a06ea964
NC		 8943 dynobj = htab->root.dynobj;
8944
8945 BFD_ASSERT (dynobj != NULL);
8946
8947 if (htab->root.dynamic_sections_created)
8948 {
9b8b325a 8949 if (bfd_link_executable (info) && !info->nointerp)
a06ea964
NC		 8950 {
8951 s = bfd_get_linker_section (dynobj, ".interp");
8952 if (s == NULL)
8953 abort ();
8954 s->size = sizeof ELF_DYNAMIC_INTERPRETER;
8955 s->contents = (unsigned char *) ELF_DYNAMIC_INTERPRETER;
8956 }
8957 }
8958
8959 /* Set up .got offsets for local syms, and space for local dynamic
8960 relocs. */
c72f2fb2 8961 for (ibfd = info->input_bfds; ibfd != NULL; ibfd = ibfd->link.next)
a06ea964
NC		 8962 {
8963 struct elf_aarch64_local_symbol *locals = NULL;
8964 Elf_Internal_Shdr *symtab_hdr;
8965 asection *srel;
8966 unsigned int i;
8967
8968 if (!is_aarch64_elf (ibfd))
8969 continue;
8970
8971 for (s = ibfd->sections; s != NULL; s = s->next)
8972 {
8973 struct elf_dyn_relocs *p;
8974
8975 for (p = (struct elf_dyn_relocs *)
8976 (elf_section_data (s)->local_dynrel); p != NULL; p = p->next)
8977 {
8978 if (!bfd_is_abs_section (p->sec)
8979 && bfd_is_abs_section (p->sec->output_section))
8980 {
8981 /* Input section has been discarded, either because
8982 it is a copy of a linkonce section or due to
8983 linker script /DISCARD/, so we'll be discarding
8984 the relocs too. */
8985 }
8986 else if (p->count != 0)
8987 {
8988 srel = elf_section_data (p->sec)->sreloc;
8989 srel->size += p->count * RELOC_SIZE (htab);
8990 if ((p->sec->output_section->flags & SEC_READONLY) != 0)
8991 info->flags |= DF_TEXTREL;
8992 }
8993 }
8994 }
8995
cec5225b 8996 locals = elf_aarch64_locals (ibfd);
a06ea964
NC		 8997 if (!locals)
8998 continue;
8999
9000 symtab_hdr = &elf_symtab_hdr (ibfd);
9001 srel = htab->root.srelgot;
9002 for (i = 0; i < symtab_hdr->sh_info; i++)
9003 {
9004 locals[i].got_offset = (bfd_vma) - 1;
9005 locals[i].tlsdesc_got_jump_table_offset = (bfd_vma) - 1;
9006 if (locals[i].got_refcount > 0)
9007 {
9008 unsigned got_type = locals[i].got_type;
9009 if (got_type & GOT_TLSDESC_GD)
9010 {
9011 locals[i].tlsdesc_got_jump_table_offset =
9012 (htab->root.sgotplt->size
9013 - aarch64_compute_jump_table_size (htab));
9014 htab->root.sgotplt->size += GOT_ENTRY_SIZE * 2;
9015 locals[i].got_offset = (bfd_vma) - 2;
9016 }
9017
9018 if (got_type & GOT_TLS_GD)
9019 {
9020 locals[i].got_offset = htab->root.sgot->size;
9021 htab->root.sgot->size += GOT_ENTRY_SIZE * 2;
9022 }
9023
b53b1bed
JW		 9024 if (got_type & GOT_TLS_IE
9025 || got_type & GOT_NORMAL)
a06ea964
NC		 9026 {
9027 locals[i].got_offset = htab->root.sgot->size;
9028 htab->root.sgot->size += GOT_ENTRY_SIZE;
9029 }
9030
9031 if (got_type == GOT_UNKNOWN)
9032 {
9033 }
9034
0e1862bb 9035 if (bfd_link_pic (info))
a06ea964
NC		 9036 {
9037 if (got_type & GOT_TLSDESC_GD)
9038 {
9039 htab->root.srelplt->size += RELOC_SIZE (htab);
9040 /* Note RELOC_COUNT not incremented here! */
9041 htab->tlsdesc_plt = (bfd_vma) - 1;
9042 }
9043
9044 if (got_type & GOT_TLS_GD)
9045 htab->root.srelgot->size += RELOC_SIZE (htab) * 2;
9046
b53b1bed
JW		 9047 if (got_type & GOT_TLS_IE
9048 || got_type & GOT_NORMAL)
a06ea964
NC		 9049 htab->root.srelgot->size += RELOC_SIZE (htab);
9050 }
9051 }
9052 else
9053 {
9054 locals[i].got_refcount = (bfd_vma) - 1;
9055 }
9056 }
9057 }
9058
9059
9060 /* Allocate global sym .plt and .got entries, and space for global
9061 sym dynamic relocs. */
cec5225b 9062 elf_link_hash_traverse (&htab->root, elfNN_aarch64_allocate_dynrelocs,
a06ea964
NC		 9063 info);
9064
1419bbe5
WN		 9065 /* Allocate global ifunc sym .plt and .got entries, and space for global
9066 ifunc sym dynamic relocs. */
9067 elf_link_hash_traverse (&htab->root, elfNN_aarch64_allocate_ifunc_dynrelocs,
9068 info);
9069
1419bbe5
WN		 9070 /* Allocate .plt and .got entries, and space for local ifunc symbols. */
9071 htab_traverse (htab->loc_hash_table,
9072 elfNN_aarch64_allocate_local_ifunc_dynrelocs,
9073 info);
a06ea964
NC		 9074
9075 /* For every jump slot reserved in the sgotplt, reloc_count is
9076 incremented. However, when we reserve space for TLS descriptors,
9077 it's not incremented, so in order to compute the space reserved
9078 for them, it suffices to multiply the reloc count by the jump
9079 slot size. */
9080
9081 if (htab->root.srelplt)
8847944f 9082 htab->sgotplt_jump_table_size = aarch64_compute_jump_table_size (htab);
a06ea964
NC		 9083
9084 if (htab->tlsdesc_plt)
9085 {
9086 if (htab->root.splt->size == 0)
37c18eed 9087 htab->root.splt->size += htab->plt_header_size;
a06ea964 9088
a06ea964 9089 /* If we're not using lazy TLS relocations, don't generate the
ce12121b 9090 GOT and PLT entry required. */
a06ea964
NC		 9091 if (!(info->flags & DF_BIND_NOW))
9092 {
ce12121b
TC		 9093 htab->tlsdesc_plt = htab->root.splt->size;
9094 htab->root.splt->size += htab->tlsdesc_plt_entry_size;
9095
a06ea964
NC		 9096 htab->dt_tlsdesc_got = htab->root.sgot->size;
9097 htab->root.sgot->size += GOT_ENTRY_SIZE;
9098 }
9099 }
9100
68fcca92 9101 /* Init mapping symbols information to use later to distingush between
4106101c
MS		 9102 code and data while scanning for errata. */
9103 if (htab->fix_erratum_835769 || htab->fix_erratum_843419)
68fcca92
JW		 9104 for (ibfd = info->input_bfds; ibfd != NULL; ibfd = ibfd->link.next)
9105 {
9106 if (!is_aarch64_elf (ibfd))
9107 continue;
9108 bfd_elfNN_aarch64_init_maps (ibfd);
9109 }
9110
a06ea964
NC		 9111 /* We now have determined the sizes of the various dynamic sections.
9112 Allocate memory for them. */
9113 relocs = FALSE;
9114 for (s = dynobj->sections; s != NULL; s = s->next)
9115 {
9116 if ((s->flags & SEC_LINKER_CREATED) == 0)
9117 continue;
9118
9119 if (s == htab->root.splt
9120 || s == htab->root.sgot
9121 || s == htab->root.sgotplt
9122 || s == htab->root.iplt
9d19e4fd 9123 || s == htab->root.igotplt
5474d94f
AM		 9124 || s == htab->root.sdynbss
9125 || s == htab->root.sdynrelro)
a06ea964
NC		 9126 {
9127 /* Strip this section if we don't need it; see the
9128 comment below. */
9129 }
fd361982 9130 else if (CONST_STRNEQ (bfd_section_name (s), ".rela"))
a06ea964
NC		 9131 {
9132 if (s->size != 0 && s != htab->root.srelplt)
9133 relocs = TRUE;
9134
9135 /* We use the reloc_count field as a counter if we need
9136 to copy relocs into the output file. */
9137 if (s != htab->root.srelplt)
9138 s->reloc_count = 0;
9139 }
9140 else
9141 {
9142 /* It's not one of our sections, so don't allocate space. */
9143 continue;
9144 }
9145
9146 if (s->size == 0)
9147 {
9148 /* If we don't need this section, strip it from the
9149 output file. This is mostly to handle .rela.bss and
9150 .rela.plt. We must create both sections in
9151 create_dynamic_sections, because they must be created
9152 before the linker maps input sections to output
9153 sections. The linker does that before
9154 adjust_dynamic_symbol is called, and it is that
9155 function which decides whether anything needs to go
9156 into these sections. */
a06ea964
NC		 9157 s->flags |= SEC_EXCLUDE;
9158 continue;
9159 }
9160
9161 if ((s->flags & SEC_HAS_CONTENTS) == 0)
9162 continue;
9163
9164 /* Allocate memory for the section contents. We use bfd_zalloc
07d6d2b8
AM		 9165 here in case unused entries are not reclaimed before the
9166 section's contents are written out. This should not happen,
9167 but this way if it does, we get a R_AARCH64_NONE reloc instead
9168 of garbage. */
a06ea964
NC		 9169 s->contents = (bfd_byte *) bfd_zalloc (dynobj, s->size);
9170 if (s->contents == NULL)
9171 return FALSE;
9172 }
9173
9174 if (htab->root.dynamic_sections_created)
9175 {
9176 /* Add some entries to the .dynamic section. We fill in the
07d6d2b8
AM		 9177 values later, in elfNN_aarch64_finish_dynamic_sections, but we
9178 must add the entries now so that we get the correct size for
9179 the .dynamic section. The DT_DEBUG entry is filled in by the
9180 dynamic linker and used by the debugger. */
a06ea964
NC		 9181#define add_dynamic_entry(TAG, VAL) \
9182 _bfd_elf_add_dynamic_entry (info, TAG, VAL)
9183
0e1862bb 9184 if (bfd_link_executable (info))
a06ea964
NC		 9185 {
9186 if (!add_dynamic_entry (DT_DEBUG, 0))
9187 return FALSE;
9188 }
9189
9190 if (htab->root.splt->size != 0)
9191 {
9192 if (!add_dynamic_entry (DT_PLTGOT, 0)
9193 || !add_dynamic_entry (DT_PLTRELSZ, 0)
9194 || !add_dynamic_entry (DT_PLTREL, DT_RELA)
9195 || !add_dynamic_entry (DT_JMPREL, 0))
9196 return FALSE;
9197
823710d5
SN		 9198 if (htab->variant_pcs
9199 && !add_dynamic_entry (DT_AARCH64_VARIANT_PCS, 0))
9200 return FALSE;
9201
a06ea964 9202 if (htab->tlsdesc_plt
ce12121b 9203 && !(info->flags & DF_BIND_NOW)
a06ea964
NC		 9204 && (!add_dynamic_entry (DT_TLSDESC_PLT, 0)
9205 || !add_dynamic_entry (DT_TLSDESC_GOT, 0)))
9206 return FALSE;
37c18eed 9207
1dbade74
SD		 9208 if ((elf_aarch64_tdata (output_bfd)->plt_type == PLT_BTI_PAC)
9209 && (!add_dynamic_entry (DT_AARCH64_BTI_PLT, 0)
9210 || !add_dynamic_entry (DT_AARCH64_PAC_PLT, 0)))
9211 return FALSE;
9212
9213 else if ((elf_aarch64_tdata (output_bfd)->plt_type == PLT_BTI)
9214 && !add_dynamic_entry (DT_AARCH64_BTI_PLT, 0))
9215 return FALSE;
9216
9217 else if ((elf_aarch64_tdata (output_bfd)->plt_type == PLT_PAC)
9218 && !add_dynamic_entry (DT_AARCH64_PAC_PLT, 0))
37c18eed 9219 return FALSE;
a06ea964
NC		 9220 }
9221
9222 if (relocs)
9223 {
9224 if (!add_dynamic_entry (DT_RELA, 0)
9225 || !add_dynamic_entry (DT_RELASZ, 0)
9226 || !add_dynamic_entry (DT_RELAENT, RELOC_SIZE (htab)))
9227 return FALSE;
9228
9229 /* If any dynamic relocs apply to a read-only section,
9230 then we need a DT_TEXTREL entry. */
c2170589 9231 if ((info->flags & DF_TEXTREL) == 0)
63c1f59d 9232 elf_link_hash_traverse (&htab->root, maybe_set_textrel, info);
c2170589 9233
a06ea964
NC		 9234 if ((info->flags & DF_TEXTREL) != 0)
9235 {
9236 if (!add_dynamic_entry (DT_TEXTREL, 0))
9237 return FALSE;
9238 }
9239 }
9240 }
9241#undef add_dynamic_entry
9242
9243 return TRUE;
a06ea964
NC		 9244}
9245
9246static inline void
caed7120
YZ		 9247elf_aarch64_update_plt_entry (bfd *output_bfd,
9248 bfd_reloc_code_real_type r_type,
9249 bfd_byte *plt_entry, bfd_vma value)
a06ea964 9250{
caed7120
YZ		 9251 reloc_howto_type *howto = elfNN_aarch64_howto_from_bfd_reloc (r_type);
9252
1d75a8e2
NC		 9253 /* FIXME: We should check the return value from this function call. */
9254 (void) _bfd_aarch64_elf_put_addend (output_bfd, plt_entry, r_type, howto, value);
a06ea964
NC		 9255}
9256
9257static void
cec5225b
YZ		 9258elfNN_aarch64_create_small_pltn_entry (struct elf_link_hash_entry *h,
9259 struct elf_aarch64_link_hash_table
1419bbe5
WN		 9260 *htab, bfd *output_bfd,
9261 struct bfd_link_info *info)
a06ea964
NC		 9262{
9263 bfd_byte *plt_entry;
9264 bfd_vma plt_index;
9265 bfd_vma got_offset;
9266 bfd_vma gotplt_entry_address;
9267 bfd_vma plt_entry_address;
9268 Elf_Internal_Rela rela;
9269 bfd_byte *loc;
1419bbe5
WN		 9270 asection *plt, *gotplt, *relplt;
9271
9272 /* When building a static executable, use .iplt, .igot.plt and
9273 .rela.iplt sections for STT_GNU_IFUNC symbols. */
9274 if (htab->root.splt != NULL)
9275 {
9276 plt = htab->root.splt;
9277 gotplt = htab->root.sgotplt;
9278 relplt = htab->root.srelplt;
9279 }
9280 else
9281 {
9282 plt = htab->root.iplt;
9283 gotplt = htab->root.igotplt;
9284 relplt = htab->root.irelplt;
9285 }
9286
9287 /* Get the index in the procedure linkage table which
9288 corresponds to this symbol. This is the index of this symbol
9289 in all the symbols for which we are making plt entries. The
9290 first entry in the procedure linkage table is reserved.
a06ea964 9291
1419bbe5
WN		 9292 Get the offset into the .got table of the entry that
9293 corresponds to this function. Each .got entry is GOT_ENTRY_SIZE
9294 bytes. The first three are reserved for the dynamic linker.
692e2b8b 9295
1419bbe5
WN		 9296 For static executables, we don't reserve anything. */
9297
9298 if (plt == htab->root.splt)
9299 {
9300 plt_index = (h->plt.offset - htab->plt_header_size) / htab->plt_entry_size;
9301 got_offset = (plt_index + 3) * GOT_ENTRY_SIZE;
9302 }
9303 else
9304 {
9305 plt_index = h->plt.offset / htab->plt_entry_size;
9306 got_offset = plt_index * GOT_ENTRY_SIZE;
9307 }
9308
9309 plt_entry = plt->contents + h->plt.offset;
9310 plt_entry_address = plt->output_section->vma
f44a1f8e 9311 + plt->output_offset + h->plt.offset;
1419bbe5
WN		 9312 gotplt_entry_address = gotplt->output_section->vma +
9313 gotplt->output_offset + got_offset;
a06ea964
NC		 9314
9315 /* Copy in the boiler-plate for the PLTn entry. */
37c18eed
SD		 9316 memcpy (plt_entry, htab->plt_entry, htab->plt_entry_size);
9317
9318 /* First instruction in BTI enabled PLT stub is a BTI
9319 instruction so skip it. */
9320 if (elf_aarch64_tdata (output_bfd)->plt_type & PLT_BTI
9321 && elf_elfheader (output_bfd)->e_type == ET_EXEC)
9322 plt_entry = plt_entry + 4;
a06ea964
NC		 9323
9324 /* Fill in the top 21 bits for this: ADRP x16, PLT_GOT + n * 8.
9325 ADRP: ((PG(S+A)-PG(P)) >> 12) & 0x1fffff */
caed7120
YZ		 9326 elf_aarch64_update_plt_entry (output_bfd, BFD_RELOC_AARCH64_ADR_HI21_PCREL,
9327 plt_entry,
9328 PG (gotplt_entry_address) -
9329 PG (plt_entry_address));
a06ea964
NC		 9330
9331 /* Fill in the lo12 bits for the load from the pltgot. */
caed7120
YZ		 9332 elf_aarch64_update_plt_entry (output_bfd, BFD_RELOC_AARCH64_LDSTNN_LO12,
9333 plt_entry + 4,
9334 PG_OFFSET (gotplt_entry_address));
a06ea964 9335
9aff4b7a 9336 /* Fill in the lo12 bits for the add from the pltgot entry. */
caed7120
YZ		 9337 elf_aarch64_update_plt_entry (output_bfd, BFD_RELOC_AARCH64_ADD_LO12,
9338 plt_entry + 8,
9339 PG_OFFSET (gotplt_entry_address));
a06ea964
NC		 9340
9341 /* All the GOTPLT Entries are essentially initialized to PLT0. */
cec5225b 9342 bfd_put_NN (output_bfd,
1419bbe5
WN		 9343 plt->output_section->vma + plt->output_offset,
9344 gotplt->contents + got_offset);
a06ea964 9345
a06ea964 9346 rela.r_offset = gotplt_entry_address;
1419bbe5
WN		 9347
9348 if (h->dynindx == -1
0e1862bb 9349 || ((bfd_link_executable (info)
1419bbe5
WN		 9350 || ELF_ST_VISIBILITY (h->other) != STV_DEFAULT)
9351 && h->def_regular
9352 && h->type == STT_GNU_IFUNC))
9353 {
9354 /* If an STT_GNU_IFUNC symbol is locally defined, generate
9355 R_AARCH64_IRELATIVE instead of R_AARCH64_JUMP_SLOT. */
9356 rela.r_info = ELFNN_R_INFO (0, AARCH64_R (IRELATIVE));
9357 rela.r_addend = (h->root.u.def.value
9358 + h->root.u.def.section->output_section->vma
9359 + h->root.u.def.section->output_offset);
9360 }
9361 else
9362 {
9363 /* Fill in the entry in the .rela.plt section. */
9364 rela.r_info = ELFNN_R_INFO (h->dynindx, AARCH64_R (JUMP_SLOT));
9365 rela.r_addend = 0;
9366 }
a06ea964
NC		 9367
9368 /* Compute the relocation entry to used based on PLT index and do
9369 not adjust reloc_count. The reloc_count has already been adjusted
9370 to account for this entry. */
1419bbe5 9371 loc = relplt->contents + plt_index * RELOC_SIZE (htab);
cec5225b 9372 bfd_elfNN_swap_reloca_out (output_bfd, &rela, loc);
a06ea964
NC		 9373}
9374
9375/* Size sections even though they're not dynamic. We use it to setup
9376 _TLS_MODULE_BASE_, if needed. */
9377
9378static bfd_boolean
cec5225b 9379elfNN_aarch64_always_size_sections (bfd *output_bfd,
a06ea964
NC		 9380 struct bfd_link_info *info)
9381{
9382 asection *tls_sec;
9383
0e1862bb 9384 if (bfd_link_relocatable (info))
a06ea964
NC		 9385 return TRUE;
9386
9387 tls_sec = elf_hash_table (info)->tls_sec;
9388
9389 if (tls_sec)
9390 {
9391 struct elf_link_hash_entry *tlsbase;
9392
9393 tlsbase = elf_link_hash_lookup (elf_hash_table (info),
9394 "_TLS_MODULE_BASE_", TRUE, TRUE, FALSE);
9395
9396 if (tlsbase)
9397 {
9398 struct bfd_link_hash_entry *h = NULL;
9399 const struct elf_backend_data *bed =
9400 get_elf_backend_data (output_bfd);
9401
9402 if (!(_bfd_generic_link_add_one_symbol
9403 (info, output_bfd, "_TLS_MODULE_BASE_", BSF_LOCAL,
9404 tls_sec, 0, NULL, FALSE, bed->collect, &h)))
9405 return FALSE;
9406
9407 tlsbase->type = STT_TLS;
9408 tlsbase = (struct elf_link_hash_entry *) h;
9409 tlsbase->def_regular = 1;
9410 tlsbase->other = STV_HIDDEN;
9411 (*bed->elf_backend_hide_symbol) (info, tlsbase, TRUE);
9412 }
9413 }
9414
9415 return TRUE;
9416}
9417
9418/* Finish up dynamic symbol handling. We set the contents of various
9419 dynamic sections here. */
2d0ca824 9420
a06ea964 9421static bfd_boolean
cec5225b 9422elfNN_aarch64_finish_dynamic_symbol (bfd *output_bfd,
a06ea964
NC		 9423 struct bfd_link_info *info,
9424 struct elf_link_hash_entry *h,
9425 Elf_Internal_Sym *sym)
9426{
cec5225b
YZ		 9427 struct elf_aarch64_link_hash_table *htab;
9428 htab = elf_aarch64_hash_table (info);
a06ea964
NC		 9429
9430 if (h->plt.offset != (bfd_vma) - 1)
9431 {
1419bbe5
WN		 9432 asection *plt, *gotplt, *relplt;
9433
a06ea964 9434 /* This symbol has an entry in the procedure linkage table. Set
07d6d2b8 9435 it up. */
a06ea964 9436
1419bbe5
WN		 9437 /* When building a static executable, use .iplt, .igot.plt and
9438 .rela.iplt sections for STT_GNU_IFUNC symbols. */
9439 if (htab->root.splt != NULL)
9440 {
9441 plt = htab->root.splt;
9442 gotplt = htab->root.sgotplt;
9443 relplt = htab->root.srelplt;
9444 }
9445 else
9446 {
9447 plt = htab->root.iplt;
9448 gotplt = htab->root.igotplt;
9449 relplt = htab->root.irelplt;
9450 }
9451
9452 /* This symbol has an entry in the procedure linkage table. Set
9453 it up. */
9454 if ((h->dynindx == -1
0e1862bb 9455 && !((h->forced_local || bfd_link_executable (info))
1419bbe5
WN		 9456 && h->def_regular
9457 && h->type == STT_GNU_IFUNC))
9458 || plt == NULL
9459 || gotplt == NULL
9460 || relplt == NULL)
f955cccf 9461 return FALSE;
a06ea964 9462
1419bbe5 9463 elfNN_aarch64_create_small_pltn_entry (h, htab, output_bfd, info);
a06ea964
NC		 9464 if (!h->def_regular)
9465 {
9466 /* Mark the symbol as undefined, rather than as defined in
46b87d49 9467 the .plt section. */
a06ea964 9468 sym->st_shndx = SHN_UNDEF;
46b87d49
WN		 9469 /* If the symbol is weak we need to clear the value.
9470 Otherwise, the PLT entry would provide a definition for
9471 the symbol even if the symbol wasn't defined anywhere,
9472 and so the symbol would never be NULL. Leave the value if
9473 there were any relocations where pointer equality matters
9474 (this is a clue for the dynamic linker, to make function
9475 pointer comparisons work between an application and shared
9476 library). */
9477 if (!h->ref_regular_nonweak || !h->pointer_equality_needed)
9478 sym->st_value = 0;
a06ea964
NC		 9479 }
9480 }
9481
9482 if (h->got.offset != (bfd_vma) - 1
a377ae2a
SN		 9483 && elf_aarch64_hash_entry (h)->got_type == GOT_NORMAL
9484 /* Undefined weak symbol in static PIE resolves to 0 without
9485 any dynamic relocations. */
9486 && !UNDEFWEAK_NO_DYNAMIC_RELOC (info, h))
a06ea964
NC		 9487 {
9488 Elf_Internal_Rela rela;
9489 bfd_byte *loc;
9490
9491 /* This symbol has an entry in the global offset table. Set it
07d6d2b8 9492 up. */
a06ea964
NC		 9493 if (htab->root.sgot == NULL || htab->root.srelgot == NULL)
9494 abort ();
9495
9496 rela.r_offset = (htab->root.sgot->output_section->vma
9497 + htab->root.sgot->output_offset
9498 + (h->got.offset & ~(bfd_vma) 1));
9499
49206388
WN		 9500 if (h->def_regular
9501 && h->type == STT_GNU_IFUNC)
9502 {
0e1862bb 9503 if (bfd_link_pic (info))
49206388
WN		 9504 {
9505 /* Generate R_AARCH64_GLOB_DAT. */
9506 goto do_glob_dat;
9507 }
9508 else
9509 {
9510 asection *plt;
9511
9512 if (!h->pointer_equality_needed)
9513 abort ();
9514
9515 /* For non-shared object, we can't use .got.plt, which
9516 contains the real function address if we need pointer
9517 equality. We load the GOT entry with the PLT entry. */
9518 plt = htab->root.splt ? htab->root.splt : htab->root.iplt;
9519 bfd_put_NN (output_bfd, (plt->output_section->vma
9520 + plt->output_offset
9521 + h->plt.offset),
9522 htab->root.sgot->contents
9523 + (h->got.offset & ~(bfd_vma) 1));
9524 return TRUE;
9525 }
9526 }
0e1862bb 9527 else if (bfd_link_pic (info) && SYMBOL_REFERENCES_LOCAL (info, h))
a06ea964 9528 {
0ee3a6db 9529 if (!(h->def_regular || ELF_COMMON_DEF_P (h)))
a06ea964
NC		 9530 return FALSE;
9531
9532 BFD_ASSERT ((h->got.offset & 1) != 0);
a6bb11b2 9533 rela.r_info = ELFNN_R_INFO (0, AARCH64_R (RELATIVE));
a06ea964
NC		 9534 rela.r_addend = (h->root.u.def.value
9535 + h->root.u.def.section->output_section->vma
9536 + h->root.u.def.section->output_offset);
9537 }
9538 else
9539 {
dc1e8a47 9540 do_glob_dat:
a06ea964 9541 BFD_ASSERT ((h->got.offset & 1) == 0);
cec5225b 9542 bfd_put_NN (output_bfd, (bfd_vma) 0,
a06ea964 9543 htab->root.sgot->contents + h->got.offset);
a6bb11b2 9544 rela.r_info = ELFNN_R_INFO (h->dynindx, AARCH64_R (GLOB_DAT));
a06ea964
NC		 9545 rela.r_addend = 0;
9546 }
9547
9548 loc = htab->root.srelgot->contents;
9549 loc += htab->root.srelgot->reloc_count++ * RELOC_SIZE (htab);
cec5225b 9550 bfd_elfNN_swap_reloca_out (output_bfd, &rela, loc);
a06ea964
NC		 9551 }
9552
9553 if (h->needs_copy)
9554 {
9555 Elf_Internal_Rela rela;
5474d94f 9556 asection *s;
a06ea964
NC		 9557 bfd_byte *loc;
9558
9559 /* This symbol needs a copy reloc. Set it up. */
a06ea964
NC		 9560 if (h->dynindx == -1
9561 || (h->root.type != bfd_link_hash_defined
9562 && h->root.type != bfd_link_hash_defweak)
9d19e4fd 9563 || htab->root.srelbss == NULL)
a06ea964
NC		 9564 abort ();
9565
9566 rela.r_offset = (h->root.u.def.value
9567 + h->root.u.def.section->output_section->vma
9568 + h->root.u.def.section->output_offset);
a6bb11b2 9569 rela.r_info = ELFNN_R_INFO (h->dynindx, AARCH64_R (COPY));
a06ea964 9570 rela.r_addend = 0;
afbf7e8e 9571 if (h->root.u.def.section == htab->root.sdynrelro)
5474d94f
AM		 9572 s = htab->root.sreldynrelro;
9573 else
9574 s = htab->root.srelbss;
9575 loc = s->contents + s->reloc_count++ * RELOC_SIZE (htab);
cec5225b 9576 bfd_elfNN_swap_reloca_out (output_bfd, &rela, loc);
a06ea964
NC		 9577 }
9578
9579 /* Mark _DYNAMIC and _GLOBAL_OFFSET_TABLE_ as absolute. SYM may
9580 be NULL for local symbols. */
9581 if (sym != NULL
9637f6ef 9582 && (h == elf_hash_table (info)->hdynamic
a06ea964
NC		 9583 || h == elf_hash_table (info)->hgot))
9584 sym->st_shndx = SHN_ABS;
9585
9586 return TRUE;
9587}
9588
1419bbe5
WN		 9589/* Finish up local dynamic symbol handling. We set the contents of
9590 various dynamic sections here. */
9591
9592static bfd_boolean
9593elfNN_aarch64_finish_local_dynamic_symbol (void **slot, void *inf)
9594{
9595 struct elf_link_hash_entry *h
9596 = (struct elf_link_hash_entry *) *slot;
9597 struct bfd_link_info *info
9598 = (struct bfd_link_info *) inf;
9599
9600 return elfNN_aarch64_finish_dynamic_symbol (info->output_bfd,
9601 info, h, NULL);
9602}
9603
a06ea964 9604static void
cec5225b
YZ		 9605elfNN_aarch64_init_small_plt0_entry (bfd *output_bfd ATTRIBUTE_UNUSED,
9606 struct elf_aarch64_link_hash_table
a06ea964
NC		 9607 *htab)
9608{
9609 /* Fill in PLT0. Fixme:RR Note this doesn't distinguish between
9610 small and large plts and at the minute just generates
9611 the small PLT. */
9612
cec5225b 9613 /* PLT0 of the small PLT looks like this in ELF64 -
a06ea964
NC		 9614 stp x16, x30, [sp, #-16]! // Save the reloc and lr on stack.
9615 adrp x16, PLT_GOT + 16 // Get the page base of the GOTPLT
9616 ldr x17, [x16, #:lo12:PLT_GOT+16] // Load the address of the
9617 // symbol resolver
9618 add x16, x16, #:lo12:PLT_GOT+16 // Load the lo12 bits of the
9619 // GOTPLT entry for this.
9620 br x17
cec5225b 9621 PLT0 will be slightly different in ELF32 due to different got entry
2d0ca824 9622 size. */
caed7120 9623 bfd_vma plt_got_2nd_ent; /* Address of GOT[2]. */
a06ea964
NC		 9624 bfd_vma plt_base;
9625
9626
37c18eed
SD		 9627 memcpy (htab->root.splt->contents, htab->plt0_entry,
9628 htab->plt_header_size);
a06ea964 9629 elf_section_data (htab->root.splt->output_section)->this_hdr.sh_entsize =
37c18eed 9630 htab->plt_header_size;
a06ea964 9631
caed7120
YZ		 9632 plt_got_2nd_ent = (htab->root.sgotplt->output_section->vma
9633 + htab->root.sgotplt->output_offset
9634 + GOT_ENTRY_SIZE * 2);
a06ea964
NC		 9635
9636 plt_base = htab->root.splt->output_section->vma +
f44a1f8e 9637 htab->root.splt->output_offset;
a06ea964 9638
37c18eed
SD		 9639 /* First instruction in BTI enabled PLT stub is a BTI
9640 instruction so skip it. */
9641 bfd_byte *plt0_entry = htab->root.splt->contents;
9642 if (elf_aarch64_tdata (output_bfd)->plt_type & PLT_BTI)
9643 plt0_entry = plt0_entry + 4;
9644
a06ea964
NC		 9645 /* Fill in the top 21 bits for this: ADRP x16, PLT_GOT + n * 8.
9646 ADRP: ((PG(S+A)-PG(P)) >> 12) & 0x1fffff */
caed7120 9647 elf_aarch64_update_plt_entry (output_bfd, BFD_RELOC_AARCH64_ADR_HI21_PCREL,
37c18eed 9648 plt0_entry + 4,
caed7120 9649 PG (plt_got_2nd_ent) - PG (plt_base + 4));
a06ea964 9650
caed7120 9651 elf_aarch64_update_plt_entry (output_bfd, BFD_RELOC_AARCH64_LDSTNN_LO12,
37c18eed 9652 plt0_entry + 8,
caed7120 9653 PG_OFFSET (plt_got_2nd_ent));
a06ea964 9654
caed7120 9655 elf_aarch64_update_plt_entry (output_bfd, BFD_RELOC_AARCH64_ADD_LO12,
37c18eed 9656 plt0_entry + 12,
caed7120 9657 PG_OFFSET (plt_got_2nd_ent));
a06ea964
NC		 9658}
9659
9660static bfd_boolean
cec5225b 9661elfNN_aarch64_finish_dynamic_sections (bfd *output_bfd,
a06ea964
NC		 9662 struct bfd_link_info *info)
9663{
cec5225b 9664 struct elf_aarch64_link_hash_table *htab;
a06ea964
NC		 9665 bfd *dynobj;
9666 asection *sdyn;
9667
cec5225b 9668 htab = elf_aarch64_hash_table (info);
a06ea964
NC		 9669 dynobj = htab->root.dynobj;
9670 sdyn = bfd_get_linker_section (dynobj, ".dynamic");
9671
9672 if (htab->root.dynamic_sections_created)
9673 {
cec5225b 9674 ElfNN_External_Dyn *dyncon, *dynconend;
a06ea964
NC		 9675
9676 if (sdyn == NULL || htab->root.sgot == NULL)
9677 abort ();
9678
cec5225b
YZ		 9679 dyncon = (ElfNN_External_Dyn *) sdyn->contents;
9680 dynconend = (ElfNN_External_Dyn *) (sdyn->contents + sdyn->size);
a06ea964
NC		 9681 for (; dyncon < dynconend; dyncon++)
9682 {
9683 Elf_Internal_Dyn dyn;
9684 asection *s;
9685
cec5225b 9686 bfd_elfNN_swap_dyn_in (dynobj, dyncon, &dyn);
a06ea964
NC		 9687
9688 switch (dyn.d_tag)
9689 {
9690 default:
9691 continue;
9692
9693 case DT_PLTGOT:
9694 s = htab->root.sgotplt;
9695 dyn.d_un.d_ptr = s->output_section->vma + s->output_offset;
9696 break;
9697
9698 case DT_JMPREL:
4ade44b7
AM		 9699 s = htab->root.srelplt;
9700 dyn.d_un.d_ptr = s->output_section->vma + s->output_offset;
a06ea964
NC		 9701 break;
9702
9703 case DT_PLTRELSZ:
c955de36 9704 s = htab->root.srelplt;
a06ea964
NC		 9705 dyn.d_un.d_val = s->size;
9706 break;
9707
a06ea964
NC		 9708 case DT_TLSDESC_PLT:
9709 s = htab->root.splt;
9710 dyn.d_un.d_ptr = s->output_section->vma + s->output_offset
9711 + htab->tlsdesc_plt;
9712 break;
9713
9714 case DT_TLSDESC_GOT:
9715 s = htab->root.sgot;
ce12121b 9716 BFD_ASSERT (htab->dt_tlsdesc_got != (bfd_vma)-1);
a06ea964
NC		 9717 dyn.d_un.d_ptr = s->output_section->vma + s->output_offset
9718 + htab->dt_tlsdesc_got;
9719 break;
9720 }
9721
cec5225b 9722 bfd_elfNN_swap_dyn_out (output_bfd, &dyn, dyncon);
a06ea964
NC		 9723 }
9724
9725 }
9726
9727 /* Fill in the special first entry in the procedure linkage table. */
9728 if (htab->root.splt && htab->root.splt->size > 0)
9729 {
cec5225b 9730 elfNN_aarch64_init_small_plt0_entry (output_bfd, htab);
a06ea964
NC		 9731
9732 elf_section_data (htab->root.splt->output_section)->
9733 this_hdr.sh_entsize = htab->plt_entry_size;
9734
9735
ce12121b 9736 if (htab->tlsdesc_plt && !(info->flags & DF_BIND_NOW))
a06ea964 9737 {
ce12121b 9738 BFD_ASSERT (htab->dt_tlsdesc_got != (bfd_vma)-1);
cec5225b 9739 bfd_put_NN (output_bfd, (bfd_vma) 0,
a06ea964
NC		 9740 htab->root.sgot->contents + htab->dt_tlsdesc_got);
9741
37c18eed
SD		 9742 const bfd_byte *entry = elfNN_aarch64_tlsdesc_small_plt_entry;
9743 htab->tlsdesc_plt_entry_size = PLT_TLSDESC_ENTRY_SIZE;
9744
9745 aarch64_plt_type type = elf_aarch64_tdata (output_bfd)->plt_type;
1dbade74 9746 if (type == PLT_BTI || type == PLT_BTI_PAC)
37c18eed
SD		 9747 {
9748 entry = elfNN_aarch64_tlsdesc_small_plt_bti_entry;
37c18eed
SD		 9749 }
9750
a06ea964 9751 memcpy (htab->root.splt->contents + htab->tlsdesc_plt,
37c18eed 9752 entry, htab->tlsdesc_plt_entry_size);
a06ea964
NC		 9753
9754 {
9755 bfd_vma adrp1_addr =
9756 htab->root.splt->output_section->vma
9757 + htab->root.splt->output_offset + htab->tlsdesc_plt + 4;
9758
caed7120 9759 bfd_vma adrp2_addr = adrp1_addr + 4;
a06ea964
NC		 9760
9761 bfd_vma got_addr =
9762 htab->root.sgot->output_section->vma
9763 + htab->root.sgot->output_offset;
9764
9765 bfd_vma pltgot_addr =
9766 htab->root.sgotplt->output_section->vma
9767 + htab->root.sgotplt->output_offset;
9768
9769 bfd_vma dt_tlsdesc_got = got_addr + htab->dt_tlsdesc_got;
caed7120
YZ		 9770
9771 bfd_byte *plt_entry =
9772 htab->root.splt->contents + htab->tlsdesc_plt;
a06ea964 9773
37c18eed
SD		 9774 /* First instruction in BTI enabled PLT stub is a BTI
9775 instruction so skip it. */
9776 if (type & PLT_BTI)
9777 {
9778 plt_entry = plt_entry + 4;
9779 adrp1_addr = adrp1_addr + 4;
9780 adrp2_addr = adrp2_addr + 4;
9781 }
9782
a06ea964 9783 /* adrp x2, DT_TLSDESC_GOT */
caed7120
YZ		 9784 elf_aarch64_update_plt_entry (output_bfd,
9785 BFD_RELOC_AARCH64_ADR_HI21_PCREL,
9786 plt_entry + 4,
9787 (PG (dt_tlsdesc_got)
9788 - PG (adrp1_addr)));
a06ea964
NC		 9789
9790 /* adrp x3, 0 */
caed7120
YZ		 9791 elf_aarch64_update_plt_entry (output_bfd,
9792 BFD_RELOC_AARCH64_ADR_HI21_PCREL,
9793 plt_entry + 8,
9794 (PG (pltgot_addr)
9795 - PG (adrp2_addr)));
a06ea964
NC		 9796
9797 /* ldr x2, [x2, #0] */
caed7120
YZ		 9798 elf_aarch64_update_plt_entry (output_bfd,
9799 BFD_RELOC_AARCH64_LDSTNN_LO12,
9800 plt_entry + 12,
9801 PG_OFFSET (dt_tlsdesc_got));
a06ea964
NC		 9802
9803 /* add x3, x3, 0 */
caed7120
YZ		 9804 elf_aarch64_update_plt_entry (output_bfd,
9805 BFD_RELOC_AARCH64_ADD_LO12,
9806 plt_entry + 16,
9807 PG_OFFSET (pltgot_addr));
a06ea964
NC		 9808 }
9809 }
9810 }
9811
9812 if (htab->root.sgotplt)
9813 {
9814 if (bfd_is_abs_section (htab->root.sgotplt->output_section))
9815 {
4eca0228 9816 _bfd_error_handler
871b3ab2 9817 (_("discarded output section: `%pA'"), htab->root.sgotplt);
a06ea964
NC		 9818 return FALSE;
9819 }
9820
9821 /* Fill in the first three entries in the global offset table. */
9822 if (htab->root.sgotplt->size > 0)
9823 {
8db339a6
MS		 9824 bfd_put_NN (output_bfd, (bfd_vma) 0, htab->root.sgotplt->contents);
9825
a06ea964 9826 /* Write GOT[1] and GOT[2], needed for the dynamic linker. */
cec5225b 9827 bfd_put_NN (output_bfd,
a06ea964
NC		 9828 (bfd_vma) 0,
9829 htab->root.sgotplt->contents + GOT_ENTRY_SIZE);
cec5225b 9830 bfd_put_NN (output_bfd,
a06ea964
NC		 9831 (bfd_vma) 0,
9832 htab->root.sgotplt->contents + GOT_ENTRY_SIZE * 2);
9833 }
9834
8db339a6
MS		 9835 if (htab->root.sgot)
9836 {
9837 if (htab->root.sgot->size > 0)
9838 {
9839 bfd_vma addr =
9840 sdyn ? sdyn->output_section->vma + sdyn->output_offset : 0;
9841 bfd_put_NN (output_bfd, addr, htab->root.sgot->contents);
9842 }
9843 }
9844
a06ea964
NC		 9845 elf_section_data (htab->root.sgotplt->output_section)->
9846 this_hdr.sh_entsize = GOT_ENTRY_SIZE;
9847 }
9848
9849 if (htab->root.sgot && htab->root.sgot->size > 0)
9850 elf_section_data (htab->root.sgot->output_section)->this_hdr.sh_entsize
9851 = GOT_ENTRY_SIZE;
9852
1419bbe5
WN		 9853 /* Fill PLT and GOT entries for local STT_GNU_IFUNC symbols. */
9854 htab_traverse (htab->loc_hash_table,
9855 elfNN_aarch64_finish_local_dynamic_symbol,
9856 info);
9857
a06ea964
NC		 9858 return TRUE;
9859}
9860
37c18eed
SD		 9861/* Check if BTI enabled PLTs are needed. Returns the type needed. */
9862static aarch64_plt_type
9863get_plt_type (bfd *abfd)
9864{
9865 aarch64_plt_type ret = PLT_NORMAL;
9866 bfd_byte *contents, *extdyn, *extdynend;
9867 asection *sec = bfd_get_section_by_name (abfd, ".dynamic");
9868 if (!sec || !bfd_malloc_and_get_section (abfd, sec, &contents))
9869 return ret;
9870 extdyn = contents;
9871 extdynend = contents + sec->size;
9872 for (; extdyn < extdynend; extdyn += sizeof (ElfNN_External_Dyn))
9873 {
9874 Elf_Internal_Dyn dyn;
9875 bfd_elfNN_swap_dyn_in (abfd, extdyn, &dyn);
9876
9877 /* Let's check the processor specific dynamic array tags. */
9878 bfd_vma tag = dyn.d_tag;
9879 if (tag < DT_LOPROC || tag > DT_HIPROC)
9880 continue;
9881
9882 switch (tag)
9883 {
9884 case DT_AARCH64_BTI_PLT:
1dbade74
SD		 9885 ret |= PLT_BTI;
9886 break;
9887
9888 case DT_AARCH64_PAC_PLT:
9889 ret |= PLT_PAC;
37c18eed
SD		 9890 break;
9891
9892 default: break;
9893 }
9894 }
9895 free (contents);
9896 return ret;
9897}
9898
9899static long
9900elfNN_aarch64_get_synthetic_symtab (bfd *abfd,
9901 long symcount,
9902 asymbol **syms,
9903 long dynsymcount,
9904 asymbol **dynsyms,
9905 asymbol **ret)
9906{
9907 elf_aarch64_tdata (abfd)->plt_type = get_plt_type (abfd);
9908 return _bfd_elf_get_synthetic_symtab (abfd, symcount, syms,
9909 dynsymcount, dynsyms, ret);
9910}
9911
a06ea964
NC		 9912/* Return address for Ith PLT stub in section PLT, for relocation REL
9913 or (bfd_vma) -1 if it should not be included. */
9914
9915static bfd_vma
cec5225b 9916elfNN_aarch64_plt_sym_val (bfd_vma i, const asection *plt,
a06ea964
NC		 9917 const arelent *rel ATTRIBUTE_UNUSED)
9918{
37c18eed
SD		 9919 size_t plt0_size = PLT_ENTRY_SIZE;
9920 size_t pltn_size = PLT_SMALL_ENTRY_SIZE;
9921
1dbade74
SD		 9922 if (elf_aarch64_tdata (plt->owner)->plt_type == PLT_BTI_PAC)
9923 {
1dbade74
SD		 9924 if (elf_elfheader (plt->owner)->e_type == ET_EXEC)
9925 pltn_size = PLT_BTI_PAC_SMALL_ENTRY_SIZE;
9926 else
9927 pltn_size = PLT_PAC_SMALL_ENTRY_SIZE;
9928 }
9929 else if (elf_aarch64_tdata (plt->owner)->plt_type == PLT_BTI)
37c18eed 9930 {
37c18eed
SD		 9931 if (elf_elfheader (plt->owner)->e_type == ET_EXEC)
9932 pltn_size = PLT_BTI_SMALL_ENTRY_SIZE;
9933 }
1dbade74
SD		 9934 else if (elf_aarch64_tdata (plt->owner)->plt_type == PLT_PAC)
9935 {
1dbade74
SD		 9936 pltn_size = PLT_PAC_SMALL_ENTRY_SIZE;
9937 }
9938
37c18eed 9939 return plt->vma + plt0_size + i * pltn_size;
a06ea964
NC		 9940}
9941
d691934d
NC		 9942/* Returns TRUE if NAME is an AArch64 mapping symbol.
9943 The ARM ELF standard defines $x (for A64 code) and $d (for data).
9944 It also allows a period initiated suffix to be added to the symbol, ie:
9945 "$[adtx]\.[:sym_char]+". */
9946
9947static bfd_boolean
9948is_aarch64_mapping_symbol (const char * name)
9949{
9950 return name != NULL /* Paranoia. */
9951 && name[0] == '$' /* Note: if objcopy --prefix-symbols has been used then
9952 the mapping symbols could have acquired a prefix.
9953 We do not support this here, since such symbols no
9954 longer conform to the ARM ELF ABI. */
9955 && (name[1] == 'd' || name[1] == 'x')
9956 && (name[2] == 0 || name[2] == '.');
9957 /* FIXME: Strictly speaking the symbol is only a valid mapping symbol if
9958 any characters that follow the period are legal characters for the body
9959 of a symbol's name. For now we just assume that this is the case. */
9960}
9961
9962/* Make sure that mapping symbols in object files are not removed via the
9963 "strip --strip-unneeded" tool. These symbols might needed in order to
9964 correctly generate linked files. Once an object file has been linked,
9965 it should be safe to remove them. */
9966
9967static void
9968elfNN_aarch64_backend_symbol_processing (bfd *abfd, asymbol *sym)
9969{
9970 if (((abfd->flags & (EXEC_P | DYNAMIC)) == 0)
9971 && sym->section != bfd_abs_section_ptr
9972 && is_aarch64_mapping_symbol (sym->name))
9973 sym->flags |= BSF_KEEP;
9974}
9975
cd702818
SD		 9976/* Implement elf_backend_setup_gnu_properties for AArch64. It serves as a
9977 wrapper function for _bfd_aarch64_elf_link_setup_gnu_properties to account
9978 for the effect of GNU properties of the output_bfd. */
9979static bfd *
9980elfNN_aarch64_link_setup_gnu_properties (struct bfd_link_info *info)
9981{
9982 uint32_t prop = elf_aarch64_tdata (info->output_bfd)->gnu_and_prop;
9983 bfd *pbfd = _bfd_aarch64_elf_link_setup_gnu_properties (info, &prop);
9984 elf_aarch64_tdata (info->output_bfd)->gnu_and_prop = prop;
37c18eed
SD		 9985 elf_aarch64_tdata (info->output_bfd)->plt_type
9986 |= (prop & GNU_PROPERTY_AARCH64_FEATURE_1_BTI) ? PLT_BTI : 0;
9987 setup_plt_values (info, elf_aarch64_tdata (info->output_bfd)->plt_type);
cd702818
SD		 9988 return pbfd;
9989}
9990
9991/* Implement elf_backend_merge_gnu_properties for AArch64. It serves as a
9992 wrapper function for _bfd_aarch64_elf_merge_gnu_properties to account
9993 for the effect of GNU properties of the output_bfd. */
9994static bfd_boolean
9995elfNN_aarch64_merge_gnu_properties (struct bfd_link_info *info,
4e539114 9996 bfd *abfd, bfd *bbfd,
cd702818
SD		 9997 elf_property *aprop,
9998 elf_property *bprop)
9999{
10000 uint32_t prop
10001 = elf_aarch64_tdata (info->output_bfd)->gnu_and_prop;
37c18eed
SD		 10002
10003 /* If output has been marked with BTI using command line argument, give out
10004 warning if necessary. */
4e539114
SD		 10005 /* Properties are merged per type, hence only check for warnings when merging
10006 GNU_PROPERTY_AARCH64_FEATURE_1_AND. */
10007 if (((aprop && aprop->pr_type == GNU_PROPERTY_AARCH64_FEATURE_1_AND)
10008 || (bprop && bprop->pr_type == GNU_PROPERTY_AARCH64_FEATURE_1_AND))
10009 && (prop & GNU_PROPERTY_AARCH64_FEATURE_1_BTI)
37c18eed
SD		 10010 && (!elf_aarch64_tdata (info->output_bfd)->no_bti_warn))
10011 {
10012 if ((aprop && !(aprop->u.number & GNU_PROPERTY_AARCH64_FEATURE_1_BTI))
4e539114 10013 || !aprop)
37c18eed 10014 {
8bf6d176 10015 _bfd_error_handler (_("%pB: warning: BTI turned on by -z force-bti when "
4e539114
SD		 10016 "all inputs do not have BTI in NOTE section."),
10017 abfd);
10018 }
10019 if ((bprop && !(bprop->u.number & GNU_PROPERTY_AARCH64_FEATURE_1_BTI))
10020 || !bprop)
10021 {
8bf6d176 10022 _bfd_error_handler (_("%pB: warning: BTI turned on by -z force-bti when "
4e539114
SD		 10023 "all inputs do not have BTI in NOTE section."),
10024 bbfd);
37c18eed
SD		 10025 }
10026 }
10027
cd702818
SD		 10028 return _bfd_aarch64_elf_merge_gnu_properties (info, abfd, aprop,
10029 bprop, prop);
10030}
a06ea964
NC		 10031
10032/* We use this so we can override certain functions
10033 (though currently we don't). */
10034
cec5225b 10035const struct elf_size_info elfNN_aarch64_size_info =
a06ea964 10036{
cec5225b
YZ		 10037 sizeof (ElfNN_External_Ehdr),
10038 sizeof (ElfNN_External_Phdr),
10039 sizeof (ElfNN_External_Shdr),
10040 sizeof (ElfNN_External_Rel),
10041 sizeof (ElfNN_External_Rela),
10042 sizeof (ElfNN_External_Sym),
10043 sizeof (ElfNN_External_Dyn),
a06ea964
NC		 10044 sizeof (Elf_External_Note),
10045 4, /* Hash table entry size. */
10046 1, /* Internal relocs per external relocs. */
cec5225b
YZ		 10047 ARCH_SIZE, /* Arch size. */
10048 LOG_FILE_ALIGN, /* Log_file_align. */
10049 ELFCLASSNN, EV_CURRENT,
10050 bfd_elfNN_write_out_phdrs,
10051 bfd_elfNN_write_shdrs_and_ehdr,
10052 bfd_elfNN_checksum_contents,
10053 bfd_elfNN_write_relocs,
10054 bfd_elfNN_swap_symbol_in,
10055 bfd_elfNN_swap_symbol_out,
10056 bfd_elfNN_slurp_reloc_table,
10057 bfd_elfNN_slurp_symbol_table,
10058 bfd_elfNN_swap_dyn_in,
10059 bfd_elfNN_swap_dyn_out,
10060 bfd_elfNN_swap_reloc_in,
10061 bfd_elfNN_swap_reloc_out,
10062 bfd_elfNN_swap_reloca_in,
10063 bfd_elfNN_swap_reloca_out
a06ea964
NC		 10064};
10065
10066#define ELF_ARCH bfd_arch_aarch64
10067#define ELF_MACHINE_CODE EM_AARCH64
10068#define ELF_MAXPAGESIZE 0x10000
10069#define ELF_MINPAGESIZE 0x1000
10070#define ELF_COMMONPAGESIZE 0x1000
10071
07d6d2b8 10072#define bfd_elfNN_close_and_cleanup \
cec5225b 10073 elfNN_aarch64_close_and_cleanup
a06ea964 10074
07d6d2b8 10075#define bfd_elfNN_bfd_free_cached_info \
cec5225b 10076 elfNN_aarch64_bfd_free_cached_info
a06ea964 10077
cec5225b
YZ		 10078#define bfd_elfNN_bfd_is_target_special_symbol \
10079 elfNN_aarch64_is_target_special_symbol
a06ea964 10080
07d6d2b8 10081#define bfd_elfNN_bfd_link_hash_table_create \
cec5225b 10082 elfNN_aarch64_link_hash_table_create
a06ea964 10083
cec5225b
YZ		 10084#define bfd_elfNN_bfd_merge_private_bfd_data \
10085 elfNN_aarch64_merge_private_bfd_data
a06ea964 10086
cec5225b
YZ		 10087#define bfd_elfNN_bfd_print_private_bfd_data \
10088 elfNN_aarch64_print_private_bfd_data
a06ea964 10089
cec5225b
YZ		 10090#define bfd_elfNN_bfd_reloc_type_lookup \
10091 elfNN_aarch64_reloc_type_lookup
a06ea964 10092
cec5225b
YZ		 10093#define bfd_elfNN_bfd_reloc_name_lookup \
10094 elfNN_aarch64_reloc_name_lookup
a06ea964 10095
cec5225b
YZ		 10096#define bfd_elfNN_bfd_set_private_flags \
10097 elfNN_aarch64_set_private_flags
a06ea964 10098
cec5225b
YZ		 10099#define bfd_elfNN_find_inliner_info \
10100 elfNN_aarch64_find_inliner_info
a06ea964 10101
37c18eed
SD		 10102#define bfd_elfNN_get_synthetic_symtab \
10103 elfNN_aarch64_get_synthetic_symtab
10104
cec5225b
YZ		 10105#define bfd_elfNN_mkobject \
10106 elfNN_aarch64_mkobject
a06ea964 10107
cec5225b
YZ		 10108#define bfd_elfNN_new_section_hook \
10109 elfNN_aarch64_new_section_hook
a06ea964
NC		 10110
10111#define elf_backend_adjust_dynamic_symbol \
cec5225b 10112 elfNN_aarch64_adjust_dynamic_symbol
a06ea964
NC		 10113
10114#define elf_backend_always_size_sections \
cec5225b 10115 elfNN_aarch64_always_size_sections
a06ea964
NC		 10116
10117#define elf_backend_check_relocs \
cec5225b 10118 elfNN_aarch64_check_relocs
a06ea964
NC		 10119
10120#define elf_backend_copy_indirect_symbol \
cec5225b 10121 elfNN_aarch64_copy_indirect_symbol
a06ea964 10122
823710d5
SN		 10123#define elf_backend_merge_symbol_attribute \
10124 elfNN_aarch64_merge_symbol_attribute
10125
a06ea964
NC		 10126/* Create .dynbss, and .rela.bss sections in DYNOBJ, and set up shortcuts
10127 to them in our hash. */
10128#define elf_backend_create_dynamic_sections \
cec5225b 10129 elfNN_aarch64_create_dynamic_sections
a06ea964
NC		 10130
10131#define elf_backend_init_index_section \
10132 _bfd_elf_init_2_index_sections
10133
a06ea964 10134#define elf_backend_finish_dynamic_sections \
cec5225b 10135 elfNN_aarch64_finish_dynamic_sections
a06ea964
NC		 10136
10137#define elf_backend_finish_dynamic_symbol \
cec5225b 10138 elfNN_aarch64_finish_dynamic_symbol
a06ea964 10139
a06ea964 10140#define elf_backend_object_p \
cec5225b 10141 elfNN_aarch64_object_p
a06ea964 10142
07d6d2b8 10143#define elf_backend_output_arch_local_syms \
cec5225b 10144 elfNN_aarch64_output_arch_local_syms
a06ea964 10145
e7679060
AM		 10146#define elf_backend_maybe_function_sym \
10147 elfNN_aarch64_maybe_function_sym
10148
a06ea964 10149#define elf_backend_plt_sym_val \
cec5225b 10150 elfNN_aarch64_plt_sym_val
a06ea964 10151
ed7e9d0b
AM		 10152#define elf_backend_init_file_header \
10153 elfNN_aarch64_init_file_header
a06ea964
NC		 10154
10155#define elf_backend_relocate_section \
cec5225b 10156 elfNN_aarch64_relocate_section
a06ea964
NC		 10157
10158#define elf_backend_reloc_type_class \
cec5225b 10159 elfNN_aarch64_reloc_type_class
a06ea964 10160
a06ea964 10161#define elf_backend_section_from_shdr \
cec5225b 10162 elfNN_aarch64_section_from_shdr
a06ea964
NC		 10163
10164#define elf_backend_size_dynamic_sections \
cec5225b 10165 elfNN_aarch64_size_dynamic_sections
a06ea964
NC		 10166
10167#define elf_backend_size_info \
cec5225b 10168 elfNN_aarch64_size_info
a06ea964 10169
68fcca92
JW		 10170#define elf_backend_write_section \
10171 elfNN_aarch64_write_section
10172
d691934d
NC		 10173#define elf_backend_symbol_processing \
10174 elfNN_aarch64_backend_symbol_processing
10175
cd702818
SD		 10176#define elf_backend_setup_gnu_properties \
10177 elfNN_aarch64_link_setup_gnu_properties
10178
10179#define elf_backend_merge_gnu_properties \
10180 elfNN_aarch64_merge_gnu_properties
10181
a06ea964 10182#define elf_backend_can_refcount 1
59c108f7 10183#define elf_backend_can_gc_sections 1
a06ea964
NC		 10184#define elf_backend_plt_readonly 1
10185#define elf_backend_want_got_plt 1
10186#define elf_backend_want_plt_sym 0
5474d94f 10187#define elf_backend_want_dynrelro 1
a06ea964
NC		 10188#define elf_backend_may_use_rel_p 0
10189#define elf_backend_may_use_rela_p 1
10190#define elf_backend_default_use_rela_p 1
07d6d2b8 10191#define elf_backend_rela_normal 1
64f52338 10192#define elf_backend_dtrel_excludes_plt 1
a06ea964 10193#define elf_backend_got_header_size (GOT_ENTRY_SIZE * 3)
c495064d 10194#define elf_backend_default_execstack 0
32f573bc 10195#define elf_backend_extern_protected_data 1
7f784814 10196#define elf_backend_hash_symbol elf_aarch64_hash_symbol
a06ea964 10197
07d6d2b8 10198#undef elf_backend_obj_attrs_section
a06ea964
NC		 10199#define elf_backend_obj_attrs_section ".ARM.attributes"
10200
cec5225b 10201#include "elfNN-target.h"
a75cf613
ES		 10202
10203/* CloudABI support. */
10204
10205#undef TARGET_LITTLE_SYM
10206#define TARGET_LITTLE_SYM aarch64_elfNN_le_cloudabi_vec
10207#undef TARGET_LITTLE_NAME
10208#define TARGET_LITTLE_NAME "elfNN-littleaarch64-cloudabi"
10209#undef TARGET_BIG_SYM
10210#define TARGET_BIG_SYM aarch64_elfNN_be_cloudabi_vec
10211#undef TARGET_BIG_NAME
10212#define TARGET_BIG_NAME "elfNN-bigaarch64-cloudabi"
10213
10214#undef ELF_OSABI
10215#define ELF_OSABI ELFOSABI_CLOUDABI
10216
10217#undef elfNN_bed
10218#define elfNN_bed elfNN_aarch64_cloudabi_bed
10219
10220#include "elfNN-target.h"
GDB Binutils - Deliverables
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