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LD: Export relative-from-absolute symbol marking to BFD
[thirdparty/binutils-gdb.git] / bfd / elfnn-aarch64.c
CommitLineData
cec5225b 1/* AArch64-specific support for NN-bit ELF.
219d1afa 2 Copyright (C) 2009-2018 Free Software Foundation, Inc.
a06ea964
NC		 3 Contributed by ARM Ltd.
4
5 This file is part of BFD, the Binary File Descriptor library.
6
7 This program is free software; you can redistribute it and/or modify
8 it under the terms of the GNU General Public License as published by
9 the Free Software Foundation; either version 3 of the License, or
10 (at your option) any later version.
11
12 This program is distributed in the hope that it will be useful,
13 but WITHOUT ANY WARRANTY; without even the implied warranty of
14 MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
15 GNU General Public License for more details.
16
17 You should have received a copy of the GNU General Public License
18 along with this program; see the file COPYING3. If not,
19 see <http://www.gnu.org/licenses/>. */
20
21/* Notes on implementation:
22
23 Thread Local Store (TLS)
24
25 Overview:
26
27 The implementation currently supports both traditional TLS and TLS
28 descriptors, but only general dynamic (GD).
29
30 For traditional TLS the assembler will present us with code
31 fragments of the form:
32
33 adrp x0, :tlsgd:foo
07d6d2b8 34 R_AARCH64_TLSGD_ADR_PAGE21(foo)
a06ea964 35 add x0, :tlsgd_lo12:foo
07d6d2b8 36 R_AARCH64_TLSGD_ADD_LO12_NC(foo)
a06ea964
NC		 37 bl __tls_get_addr
38 nop
39
40 For TLS descriptors the assembler will present us with code
41 fragments of the form:
42
07d6d2b8
AM		 43 adrp x0, :tlsdesc:foo R_AARCH64_TLSDESC_ADR_PAGE21(foo)
44 ldr x1, [x0, #:tlsdesc_lo12:foo] R_AARCH64_TLSDESC_LD64_LO12(foo)
45 add x0, x0, #:tlsdesc_lo12:foo R_AARCH64_TLSDESC_ADD_LO12(foo)
a06ea964 46 .tlsdesccall foo
07d6d2b8 47 blr x1 R_AARCH64_TLSDESC_CALL(foo)
a06ea964
NC		 48
49 The relocations R_AARCH64_TLSGD_{ADR_PREL21,ADD_LO12_NC} against foo
50 indicate that foo is thread local and should be accessed via the
51 traditional TLS mechanims.
52
a6bb11b2 53 The relocations R_AARCH64_TLSDESC_{ADR_PAGE21,LD64_LO12_NC,ADD_LO12_NC}
a06ea964
NC		 54 against foo indicate that 'foo' is thread local and should be accessed
55 via a TLS descriptor mechanism.
56
57 The precise instruction sequence is only relevant from the
58 perspective of linker relaxation which is currently not implemented.
59
60 The static linker must detect that 'foo' is a TLS object and
61 allocate a double GOT entry. The GOT entry must be created for both
62 global and local TLS symbols. Note that this is different to none
63 TLS local objects which do not need a GOT entry.
64
65 In the traditional TLS mechanism, the double GOT entry is used to
66 provide the tls_index structure, containing module and offset
a6bb11b2 67 entries. The static linker places the relocation R_AARCH64_TLS_DTPMOD
a06ea964
NC		 68 on the module entry. The loader will subsequently fixup this
69 relocation with the module identity.
70
71 For global traditional TLS symbols the static linker places an
a6bb11b2 72 R_AARCH64_TLS_DTPREL relocation on the offset entry. The loader
a06ea964
NC		 73 will subsequently fixup the offset. For local TLS symbols the static
74 linker fixes up offset.
75
76 In the TLS descriptor mechanism the double GOT entry is used to
77 provide the descriptor. The static linker places the relocation
78 R_AARCH64_TLSDESC on the first GOT slot. The loader will
79 subsequently fix this up.
80
81 Implementation:
82
83 The handling of TLS symbols is implemented across a number of
84 different backend functions. The following is a top level view of
85 what processing is performed where.
86
87 The TLS implementation maintains state information for each TLS
88 symbol. The state information for local and global symbols is kept
89 in different places. Global symbols use generic BFD structures while
90 local symbols use backend specific structures that are allocated and
91 maintained entirely by the backend.
92
93 The flow:
94
cec5225b 95 elfNN_aarch64_check_relocs()
a06ea964
NC		 96
97 This function is invoked for each relocation.
98
99 The TLS relocations R_AARCH64_TLSGD_{ADR_PREL21,ADD_LO12_NC} and
a6bb11b2 100 R_AARCH64_TLSDESC_{ADR_PAGE21,LD64_LO12_NC,ADD_LO12_NC} are
a06ea964
NC		 101 spotted. One time creation of local symbol data structures are
102 created when the first local symbol is seen.
103
104 The reference count for a symbol is incremented. The GOT type for
105 each symbol is marked as general dynamic.
106
cec5225b 107 elfNN_aarch64_allocate_dynrelocs ()
a06ea964
NC		 108
109 For each global with positive reference count we allocate a double
110 GOT slot. For a traditional TLS symbol we allocate space for two
111 relocation entries on the GOT, for a TLS descriptor symbol we
112 allocate space for one relocation on the slot. Record the GOT offset
113 for this symbol.
114
cec5225b 115 elfNN_aarch64_size_dynamic_sections ()
a06ea964
NC		 116
117 Iterate all input BFDS, look for in the local symbol data structure
118 constructed earlier for local TLS symbols and allocate them double
119 GOT slots along with space for a single GOT relocation. Update the
120 local symbol structure to record the GOT offset allocated.
121
cec5225b 122 elfNN_aarch64_relocate_section ()
a06ea964 123
cec5225b 124 Calls elfNN_aarch64_final_link_relocate ()
a06ea964
NC		 125
126 Emit the relevant TLS relocations against the GOT for each TLS
127 symbol. For local TLS symbols emit the GOT offset directly. The GOT
128 relocations are emitted once the first time a TLS symbol is
129 encountered. The implementation uses the LSB of the GOT offset to
130 flag that the relevant GOT relocations for a symbol have been
131 emitted. All of the TLS code that uses the GOT offset needs to take
132 care to mask out this flag bit before using the offset.
133
cec5225b 134 elfNN_aarch64_final_link_relocate ()
a06ea964
NC		 135
136 Fixup the R_AARCH64_TLSGD_{ADR_PREL21, ADD_LO12_NC} relocations. */
137
138#include "sysdep.h"
139#include "bfd.h"
140#include "libiberty.h"
141#include "libbfd.h"
142#include "bfd_stdint.h"
143#include "elf-bfd.h"
144#include "bfdlink.h"
1419bbe5 145#include "objalloc.h"
a06ea964 146#include "elf/aarch64.h"
caed7120 147#include "elfxx-aarch64.h"
a06ea964 148
cec5225b
YZ		 149#define ARCH_SIZE NN
150
151#if ARCH_SIZE == 64
152#define AARCH64_R(NAME) R_AARCH64_ ## NAME
153#define AARCH64_R_STR(NAME) "R_AARCH64_" #NAME
a6bb11b2
YZ		 154#define HOWTO64(...) HOWTO (__VA_ARGS__)
155#define HOWTO32(...) EMPTY_HOWTO (0)
cec5225b 156#define LOG_FILE_ALIGN 3
f955cccf 157#define BFD_RELOC_AARCH64_TLSDESC_LD64_LO12_NC BFD_RELOC_AARCH64_TLSDESC_LD64_LO12
cec5225b
YZ		 158#endif
159
160#if ARCH_SIZE == 32
161#define AARCH64_R(NAME) R_AARCH64_P32_ ## NAME
162#define AARCH64_R_STR(NAME) "R_AARCH64_P32_" #NAME
a6bb11b2
YZ		 163#define HOWTO64(...) EMPTY_HOWTO (0)
164#define HOWTO32(...) HOWTO (__VA_ARGS__)
cec5225b 165#define LOG_FILE_ALIGN 2
07d6d2b8
AM		 166#define BFD_RELOC_AARCH64_TLSDESC_LD32_LO12 BFD_RELOC_AARCH64_TLSDESC_LD32_LO12_NC
167#define R_AARCH64_P32_TLSDESC_ADD_LO12 R_AARCH64_P32_TLSDESC_ADD_LO12_NC
cec5225b
YZ		 168#endif
169
a6bb11b2 170#define IS_AARCH64_TLS_RELOC(R_TYPE) \
4c0a9a6f
JW		 171 ((R_TYPE) == BFD_RELOC_AARCH64_TLSGD_ADD_LO12_NC \
172 || (R_TYPE) == BFD_RELOC_AARCH64_TLSGD_ADR_PAGE21 \
3c12b054 173 || (R_TYPE) == BFD_RELOC_AARCH64_TLSGD_ADR_PREL21 \
3e8286c0 174 || (R_TYPE) == BFD_RELOC_AARCH64_TLSGD_MOVW_G0_NC \
1aa66fb1 175 || (R_TYPE) == BFD_RELOC_AARCH64_TLSGD_MOVW_G1 \
a6bb11b2 176 || (R_TYPE) == BFD_RELOC_AARCH64_TLSIE_ADR_GOTTPREL_PAGE21 \
a6bb11b2 177 || (R_TYPE) == BFD_RELOC_AARCH64_TLSIE_LD32_GOTTPREL_LO12_NC \
4c0a9a6f 178 || (R_TYPE) == BFD_RELOC_AARCH64_TLSIE_LD64_GOTTPREL_LO12_NC \
a6bb11b2 179 || (R_TYPE) == BFD_RELOC_AARCH64_TLSIE_LD_GOTTPREL_PREL19 \
4c0a9a6f
JW		 180 || (R_TYPE) == BFD_RELOC_AARCH64_TLSIE_MOVW_GOTTPREL_G0_NC \
181 || (R_TYPE) == BFD_RELOC_AARCH64_TLSIE_MOVW_GOTTPREL_G1 \
6ffe9a1b 182 || (R_TYPE) == BFD_RELOC_AARCH64_TLSLD_ADD_DTPREL_HI12 \
40fbed84 183 || (R_TYPE) == BFD_RELOC_AARCH64_TLSLD_ADD_DTPREL_LO12 \
753999c1 184 || (R_TYPE) == BFD_RELOC_AARCH64_TLSLD_ADD_DTPREL_LO12_NC \
73f925cc 185 || (R_TYPE) == BFD_RELOC_AARCH64_TLSLD_ADD_LO12_NC \
f69e4920 186 || (R_TYPE) == BFD_RELOC_AARCH64_TLSLD_ADR_PAGE21 \
77a69ff8 187 || (R_TYPE) == BFD_RELOC_AARCH64_TLSLD_ADR_PREL21 \
07c9aa07
JW		 188 || (R_TYPE) == BFD_RELOC_AARCH64_TLSLD_LDST16_DTPREL_LO12 \
189 || (R_TYPE) == BFD_RELOC_AARCH64_TLSLD_LDST16_DTPREL_LO12_NC \
190 || (R_TYPE) == BFD_RELOC_AARCH64_TLSLD_LDST32_DTPREL_LO12 \
191 || (R_TYPE) == BFD_RELOC_AARCH64_TLSLD_LDST32_DTPREL_LO12_NC \
192 || (R_TYPE) == BFD_RELOC_AARCH64_TLSLD_LDST64_DTPREL_LO12 \
193 || (R_TYPE) == BFD_RELOC_AARCH64_TLSLD_LDST64_DTPREL_LO12_NC \
194 || (R_TYPE) == BFD_RELOC_AARCH64_TLSLD_LDST8_DTPREL_LO12 \
195 || (R_TYPE) == BFD_RELOC_AARCH64_TLSLD_LDST8_DTPREL_LO12_NC \
6ffe9a1b
JW		 196 || (R_TYPE) == BFD_RELOC_AARCH64_TLSLD_MOVW_DTPREL_G0 \
197 || (R_TYPE) == BFD_RELOC_AARCH64_TLSLD_MOVW_DTPREL_G0_NC \
198 || (R_TYPE) == BFD_RELOC_AARCH64_TLSLD_MOVW_DTPREL_G1 \
199 || (R_TYPE) == BFD_RELOC_AARCH64_TLSLD_MOVW_DTPREL_G1_NC \
200 || (R_TYPE) == BFD_RELOC_AARCH64_TLSLD_MOVW_DTPREL_G2 \
a6bb11b2 201 || (R_TYPE) == BFD_RELOC_AARCH64_TLSLE_ADD_TPREL_HI12 \
4c0a9a6f 202 || (R_TYPE) == BFD_RELOC_AARCH64_TLSLE_ADD_TPREL_LO12 \
a6bb11b2 203 || (R_TYPE) == BFD_RELOC_AARCH64_TLSLE_ADD_TPREL_LO12_NC \
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)
a06ea964 271
2d0ca824 272/* Encoding of the nop instruction. */
a06ea964
NC		 273#define INSN_NOP 0xd503201f
274
275#define aarch64_compute_jump_table_size(htab) \
276 (((htab)->root.srelplt == NULL) ? 0 \
277 : (htab)->root.srelplt->reloc_count * GOT_ENTRY_SIZE)
278
279/* The first entry in a procedure linkage table looks like this
280 if the distance between the PLTGOT and the PLT is < 4GB use
281 these PLT entries. Note that the dynamic linker gets &PLTGOT[2]
282 in x16 and needs to work out PLTGOT[1] by using an address of
cec5225b
YZ		 283 [x16,#-GOT_ENTRY_SIZE]. */
284static const bfd_byte elfNN_aarch64_small_plt0_entry[PLT_ENTRY_SIZE] =
a06ea964
NC		 285{
286 0xf0, 0x7b, 0xbf, 0xa9, /* stp x16, x30, [sp, #-16]! */
287 0x10, 0x00, 0x00, 0x90, /* adrp x16, (GOT+16) */
caed7120 288#if ARCH_SIZE == 64
a06ea964
NC		 289 0x11, 0x0A, 0x40, 0xf9, /* ldr x17, [x16, #PLT_GOT+0x10] */
290 0x10, 0x42, 0x00, 0x91, /* add x16, x16,#PLT_GOT+0x10 */
caed7120
YZ		 291#else
292 0x11, 0x0A, 0x40, 0xb9, /* ldr w17, [x16, #PLT_GOT+0x8] */
293 0x10, 0x22, 0x00, 0x11, /* add w16, w16,#PLT_GOT+0x8 */
294#endif
a06ea964
NC		 295 0x20, 0x02, 0x1f, 0xd6, /* br x17 */
296 0x1f, 0x20, 0x03, 0xd5, /* nop */
297 0x1f, 0x20, 0x03, 0xd5, /* nop */
298 0x1f, 0x20, 0x03, 0xd5, /* nop */
299};
300
301/* Per function entry in a procedure linkage table looks like this
302 if the distance between the PLTGOT and the PLT is < 4GB use
303 these PLT entries. */
cec5225b 304static const bfd_byte elfNN_aarch64_small_plt_entry[PLT_SMALL_ENTRY_SIZE] =
a06ea964
NC		 305{
306 0x10, 0x00, 0x00, 0x90, /* adrp x16, PLTGOT + n * 8 */
caed7120 307#if ARCH_SIZE == 64
a06ea964
NC		 308 0x11, 0x02, 0x40, 0xf9, /* ldr x17, [x16, PLTGOT + n * 8] */
309 0x10, 0x02, 0x00, 0x91, /* add x16, x16, :lo12:PLTGOT + n * 8 */
caed7120
YZ		 310#else
311 0x11, 0x02, 0x40, 0xb9, /* ldr w17, [x16, PLTGOT + n * 4] */
312 0x10, 0x02, 0x00, 0x11, /* add w16, w16, :lo12:PLTGOT + n * 4 */
313#endif
a06ea964
NC		 314 0x20, 0x02, 0x1f, 0xd6, /* br x17. */
315};
316
317static const bfd_byte
cec5225b 318elfNN_aarch64_tlsdesc_small_plt_entry[PLT_TLSDESC_ENTRY_SIZE] =
a06ea964
NC		 319{
320 0xe2, 0x0f, 0xbf, 0xa9, /* stp x2, x3, [sp, #-16]! */
321 0x02, 0x00, 0x00, 0x90, /* adrp x2, 0 */
322 0x03, 0x00, 0x00, 0x90, /* adrp x3, 0 */
caed7120
YZ		 323#if ARCH_SIZE == 64
324 0x42, 0x00, 0x40, 0xf9, /* ldr x2, [x2, #0] */
a06ea964 325 0x63, 0x00, 0x00, 0x91, /* add x3, x3, 0 */
caed7120
YZ		 326#else
327 0x42, 0x00, 0x40, 0xb9, /* ldr w2, [x2, #0] */
328 0x63, 0x00, 0x00, 0x11, /* add w3, w3, 0 */
329#endif
330 0x40, 0x00, 0x1f, 0xd6, /* br x2 */
a06ea964
NC		 331 0x1f, 0x20, 0x03, 0xd5, /* nop */
332 0x1f, 0x20, 0x03, 0xd5, /* nop */
333};
334
07d6d2b8
AM		 335#define elf_info_to_howto elfNN_aarch64_info_to_howto
336#define elf_info_to_howto_rel elfNN_aarch64_info_to_howto
a06ea964
NC		 337
338#define AARCH64_ELF_ABI_VERSION 0
a06ea964
NC		 339
340/* In case we're on a 32-bit machine, construct a 64-bit "-1" value. */
341#define ALL_ONES (~ (bfd_vma) 0)
342
a6bb11b2
YZ		 343/* Indexed by the bfd interal reloc enumerators.
344 Therefore, the table needs to be synced with BFD_RELOC_AARCH64_*
345 in reloc.c. */
a06ea964 346
a6bb11b2 347static reloc_howto_type elfNN_aarch64_howto_table[] =
a06ea964 348{
a6bb11b2 349 EMPTY_HOWTO (0),
a06ea964 350
a6bb11b2 351 /* Basic data relocations. */
a06ea964 352
b7f28d87
JW		 353 /* Deprecated, but retained for backwards compatibility. */
354 HOWTO64 (R_AARCH64_NULL, /* type */
a06ea964 355 0, /* rightshift */
6346d5ca 356 3, /* size (0 = byte, 1 = short, 2 = long) */
a6bb11b2 357 0, /* bitsize */
a06ea964
NC		 358 FALSE, /* pc_relative */
359 0, /* bitpos */
360 complain_overflow_dont, /* complain_on_overflow */
361 bfd_elf_generic_reloc, /* special_function */
a6bb11b2 362 "R_AARCH64_NULL", /* name */
a06ea964
NC		 363 FALSE, /* partial_inplace */
364 0, /* src_mask */
a6bb11b2 365 0, /* dst_mask */
a06ea964 366 FALSE), /* pcrel_offset */
a6bb11b2 367 HOWTO (R_AARCH64_NONE, /* type */
a06ea964 368 0, /* rightshift */
6346d5ca 369 3, /* size (0 = byte, 1 = short, 2 = long) */
a06ea964
NC		 370 0, /* bitsize */
371 FALSE, /* pc_relative */
372 0, /* bitpos */
373 complain_overflow_dont, /* complain_on_overflow */
374 bfd_elf_generic_reloc, /* special_function */
a6bb11b2 375 "R_AARCH64_NONE", /* name */
a06ea964
NC		 376 FALSE, /* partial_inplace */
377 0, /* src_mask */
378 0, /* dst_mask */
379 FALSE), /* pcrel_offset */
380
381 /* .xword: (S+A) */
a6bb11b2 382 HOWTO64 (AARCH64_R (ABS64), /* type */
a06ea964
NC		 383 0, /* rightshift */
384 4, /* size (4 = long long) */
385 64, /* bitsize */
386 FALSE, /* pc_relative */
387 0, /* bitpos */
388 complain_overflow_unsigned, /* complain_on_overflow */
389 bfd_elf_generic_reloc, /* special_function */
a6bb11b2 390 AARCH64_R_STR (ABS64), /* name */
a06ea964
NC		 391 FALSE, /* partial_inplace */
392 ALL_ONES, /* src_mask */
393 ALL_ONES, /* dst_mask */
394 FALSE), /* pcrel_offset */
395
396 /* .word: (S+A) */
a6bb11b2 397 HOWTO (AARCH64_R (ABS32), /* type */
a06ea964
NC		 398 0, /* rightshift */
399 2, /* size (0 = byte, 1 = short, 2 = long) */
400 32, /* bitsize */
401 FALSE, /* pc_relative */
402 0, /* bitpos */
403 complain_overflow_unsigned, /* complain_on_overflow */
404 bfd_elf_generic_reloc, /* special_function */
a6bb11b2 405 AARCH64_R_STR (ABS32), /* name */
a06ea964
NC		 406 FALSE, /* partial_inplace */
407 0xffffffff, /* src_mask */
408 0xffffffff, /* dst_mask */
409 FALSE), /* pcrel_offset */
410
411 /* .half: (S+A) */
a6bb11b2 412 HOWTO (AARCH64_R (ABS16), /* type */
a06ea964
NC		 413 0, /* rightshift */
414 1, /* size (0 = byte, 1 = short, 2 = long) */
415 16, /* bitsize */
416 FALSE, /* pc_relative */
417 0, /* bitpos */
418 complain_overflow_unsigned, /* complain_on_overflow */
419 bfd_elf_generic_reloc, /* special_function */
a6bb11b2 420 AARCH64_R_STR (ABS16), /* name */
a06ea964
NC		 421 FALSE, /* partial_inplace */
422 0xffff, /* src_mask */
423 0xffff, /* dst_mask */
424 FALSE), /* pcrel_offset */
425
426 /* .xword: (S+A-P) */
a6bb11b2 427 HOWTO64 (AARCH64_R (PREL64), /* type */
a06ea964
NC		 428 0, /* rightshift */
429 4, /* size (4 = long long) */
430 64, /* bitsize */
431 TRUE, /* pc_relative */
432 0, /* bitpos */
433 complain_overflow_signed, /* complain_on_overflow */
434 bfd_elf_generic_reloc, /* special_function */
a6bb11b2 435 AARCH64_R_STR (PREL64), /* name */
a06ea964
NC		 436 FALSE, /* partial_inplace */
437 ALL_ONES, /* src_mask */
438 ALL_ONES, /* dst_mask */
439 TRUE), /* pcrel_offset */
440
441 /* .word: (S+A-P) */
a6bb11b2 442 HOWTO (AARCH64_R (PREL32), /* type */
a06ea964
NC		 443 0, /* rightshift */
444 2, /* size (0 = byte, 1 = short, 2 = long) */
445 32, /* bitsize */
446 TRUE, /* pc_relative */
447 0, /* bitpos */
448 complain_overflow_signed, /* complain_on_overflow */
449 bfd_elf_generic_reloc, /* special_function */
a6bb11b2 450 AARCH64_R_STR (PREL32), /* name */
a06ea964
NC		 451 FALSE, /* partial_inplace */
452 0xffffffff, /* src_mask */
453 0xffffffff, /* dst_mask */
454 TRUE), /* pcrel_offset */
455
456 /* .half: (S+A-P) */
a6bb11b2 457 HOWTO (AARCH64_R (PREL16), /* type */
a06ea964
NC		 458 0, /* rightshift */
459 1, /* size (0 = byte, 1 = short, 2 = long) */
460 16, /* bitsize */
461 TRUE, /* pc_relative */
462 0, /* bitpos */
463 complain_overflow_signed, /* complain_on_overflow */
464 bfd_elf_generic_reloc, /* special_function */
a6bb11b2 465 AARCH64_R_STR (PREL16), /* name */
a06ea964
NC		 466 FALSE, /* partial_inplace */
467 0xffff, /* src_mask */
468 0xffff, /* dst_mask */
469 TRUE), /* pcrel_offset */
470
471 /* Group relocations to create a 16, 32, 48 or 64 bit
472 unsigned data or abs address inline. */
473
474 /* MOVZ: ((S+A) >> 0) & 0xffff */
a6bb11b2 475 HOWTO (AARCH64_R (MOVW_UABS_G0), /* type */
a06ea964
NC		 476 0, /* rightshift */
477 2, /* size (0 = byte, 1 = short, 2 = long) */
478 16, /* bitsize */
479 FALSE, /* pc_relative */
480 0, /* bitpos */
481 complain_overflow_unsigned, /* complain_on_overflow */
482 bfd_elf_generic_reloc, /* special_function */
a6bb11b2 483 AARCH64_R_STR (MOVW_UABS_G0), /* name */
a06ea964
NC		 484 FALSE, /* partial_inplace */
485 0xffff, /* src_mask */
486 0xffff, /* dst_mask */
487 FALSE), /* pcrel_offset */
488
489 /* MOVK: ((S+A) >> 0) & 0xffff [no overflow check] */
a6bb11b2 490 HOWTO (AARCH64_R (MOVW_UABS_G0_NC), /* type */
a06ea964
NC		 491 0, /* rightshift */
492 2, /* size (0 = byte, 1 = short, 2 = long) */
493 16, /* bitsize */
494 FALSE, /* pc_relative */
495 0, /* bitpos */
496 complain_overflow_dont, /* complain_on_overflow */
497 bfd_elf_generic_reloc, /* special_function */
a6bb11b2 498 AARCH64_R_STR (MOVW_UABS_G0_NC), /* name */
a06ea964
NC		 499 FALSE, /* partial_inplace */
500 0xffff, /* src_mask */
501 0xffff, /* dst_mask */
502 FALSE), /* pcrel_offset */
503
504 /* MOVZ: ((S+A) >> 16) & 0xffff */
a6bb11b2 505 HOWTO (AARCH64_R (MOVW_UABS_G1), /* type */
a06ea964
NC		 506 16, /* rightshift */
507 2, /* size (0 = byte, 1 = short, 2 = long) */
508 16, /* bitsize */
509 FALSE, /* pc_relative */
510 0, /* bitpos */
511 complain_overflow_unsigned, /* complain_on_overflow */
512 bfd_elf_generic_reloc, /* special_function */
a6bb11b2 513 AARCH64_R_STR (MOVW_UABS_G1), /* name */
a06ea964
NC		 514 FALSE, /* partial_inplace */
515 0xffff, /* src_mask */
516 0xffff, /* dst_mask */
517 FALSE), /* pcrel_offset */
518
519 /* MOVK: ((S+A) >> 16) & 0xffff [no overflow check] */
a6bb11b2 520 HOWTO64 (AARCH64_R (MOVW_UABS_G1_NC), /* type */
a06ea964
NC		 521 16, /* rightshift */
522 2, /* size (0 = byte, 1 = short, 2 = long) */
523 16, /* bitsize */
524 FALSE, /* pc_relative */
525 0, /* bitpos */
526 complain_overflow_dont, /* complain_on_overflow */
527 bfd_elf_generic_reloc, /* special_function */
a6bb11b2 528 AARCH64_R_STR (MOVW_UABS_G1_NC), /* name */
a06ea964
NC		 529 FALSE, /* partial_inplace */
530 0xffff, /* src_mask */
531 0xffff, /* dst_mask */
532 FALSE), /* pcrel_offset */
533
534 /* MOVZ: ((S+A) >> 32) & 0xffff */
a6bb11b2 535 HOWTO64 (AARCH64_R (MOVW_UABS_G2), /* type */
a06ea964
NC		 536 32, /* rightshift */
537 2, /* size (0 = byte, 1 = short, 2 = long) */
538 16, /* bitsize */
539 FALSE, /* pc_relative */
540 0, /* bitpos */
541 complain_overflow_unsigned, /* complain_on_overflow */
542 bfd_elf_generic_reloc, /* special_function */
a6bb11b2 543 AARCH64_R_STR (MOVW_UABS_G2), /* name */
a06ea964
NC		 544 FALSE, /* partial_inplace */
545 0xffff, /* src_mask */
546 0xffff, /* dst_mask */
547 FALSE), /* pcrel_offset */
548
549 /* MOVK: ((S+A) >> 32) & 0xffff [no overflow check] */
a6bb11b2 550 HOWTO64 (AARCH64_R (MOVW_UABS_G2_NC), /* type */
a06ea964
NC		 551 32, /* rightshift */
552 2, /* size (0 = byte, 1 = short, 2 = long) */
553 16, /* bitsize */
554 FALSE, /* pc_relative */
555 0, /* bitpos */
556 complain_overflow_dont, /* complain_on_overflow */
557 bfd_elf_generic_reloc, /* special_function */
a6bb11b2 558 AARCH64_R_STR (MOVW_UABS_G2_NC), /* name */
a06ea964
NC		 559 FALSE, /* partial_inplace */
560 0xffff, /* src_mask */
561 0xffff, /* dst_mask */
562 FALSE), /* pcrel_offset */
563
564 /* MOVZ: ((S+A) >> 48) & 0xffff */
a6bb11b2 565 HOWTO64 (AARCH64_R (MOVW_UABS_G3), /* type */
a06ea964
NC		 566 48, /* rightshift */
567 2, /* size (0 = byte, 1 = short, 2 = long) */
568 16, /* bitsize */
569 FALSE, /* pc_relative */
570 0, /* bitpos */
571 complain_overflow_unsigned, /* complain_on_overflow */
572 bfd_elf_generic_reloc, /* special_function */
a6bb11b2 573 AARCH64_R_STR (MOVW_UABS_G3), /* name */
a06ea964
NC		 574 FALSE, /* partial_inplace */
575 0xffff, /* src_mask */
576 0xffff, /* dst_mask */
577 FALSE), /* pcrel_offset */
578
579 /* Group relocations to create high part of a 16, 32, 48 or 64 bit
580 signed data or abs address inline. Will change instruction
581 to MOVN or MOVZ depending on sign of calculated value. */
582
583 /* MOV[ZN]: ((S+A) >> 0) & 0xffff */
a6bb11b2 584 HOWTO (AARCH64_R (MOVW_SABS_G0), /* type */
a06ea964
NC		 585 0, /* rightshift */
586 2, /* size (0 = byte, 1 = short, 2 = long) */
c5e3a364 587 17, /* bitsize */
a06ea964
NC		 588 FALSE, /* pc_relative */
589 0, /* bitpos */
590 complain_overflow_signed, /* complain_on_overflow */
591 bfd_elf_generic_reloc, /* special_function */
a6bb11b2 592 AARCH64_R_STR (MOVW_SABS_G0), /* name */
a06ea964
NC		 593 FALSE, /* partial_inplace */
594 0xffff, /* src_mask */
595 0xffff, /* dst_mask */
596 FALSE), /* pcrel_offset */
597
598 /* MOV[ZN]: ((S+A) >> 16) & 0xffff */
a6bb11b2 599 HOWTO64 (AARCH64_R (MOVW_SABS_G1), /* type */
a06ea964
NC		 600 16, /* rightshift */
601 2, /* size (0 = byte, 1 = short, 2 = long) */
c5e3a364 602 17, /* bitsize */
a06ea964
NC		 603 FALSE, /* pc_relative */
604 0, /* bitpos */
605 complain_overflow_signed, /* complain_on_overflow */
606 bfd_elf_generic_reloc, /* special_function */
a6bb11b2 607 AARCH64_R_STR (MOVW_SABS_G1), /* name */
a06ea964
NC		 608 FALSE, /* partial_inplace */
609 0xffff, /* src_mask */
610 0xffff, /* dst_mask */
611 FALSE), /* pcrel_offset */
612
613 /* MOV[ZN]: ((S+A) >> 32) & 0xffff */
a6bb11b2 614 HOWTO64 (AARCH64_R (MOVW_SABS_G2), /* type */
a06ea964
NC		 615 32, /* rightshift */
616 2, /* size (0 = byte, 1 = short, 2 = long) */
c5e3a364 617 17, /* bitsize */
a06ea964
NC		 618 FALSE, /* pc_relative */
619 0, /* bitpos */
620 complain_overflow_signed, /* complain_on_overflow */
621 bfd_elf_generic_reloc, /* special_function */
a6bb11b2 622 AARCH64_R_STR (MOVW_SABS_G2), /* name */
a06ea964
NC		 623 FALSE, /* partial_inplace */
624 0xffff, /* src_mask */
625 0xffff, /* dst_mask */
626 FALSE), /* pcrel_offset */
627
32247401
RL		 628 /* Group relocations to create a 16, 32, 48 or 64 bit
629 PC relative address inline. */
630
631 /* MOV[NZ]: ((S+A-P) >> 0) & 0xffff */
632 HOWTO64 (AARCH64_R (MOVW_PREL_G0), /* type */
633 0, /* rightshift */
634 2, /* size (0 = byte, 1 = short, 2 = long) */
635 17, /* bitsize */
636 TRUE, /* pc_relative */
637 0, /* bitpos */
638 complain_overflow_signed, /* complain_on_overflow */
639 bfd_elf_generic_reloc, /* special_function */
640 AARCH64_R_STR (MOVW_PREL_G0), /* name */
641 FALSE, /* partial_inplace */
642 0xffff, /* src_mask */
643 0xffff, /* dst_mask */
644 TRUE), /* pcrel_offset */
645
646 /* MOVK: ((S+A-P) >> 0) & 0xffff [no overflow check] */
647 HOWTO64 (AARCH64_R (MOVW_PREL_G0_NC), /* type */
648 0, /* rightshift */
649 2, /* size (0 = byte, 1 = short, 2 = long) */
650 16, /* bitsize */
651 TRUE, /* pc_relative */
652 0, /* bitpos */
653 complain_overflow_dont, /* complain_on_overflow */
654 bfd_elf_generic_reloc, /* special_function */
655 AARCH64_R_STR (MOVW_PREL_G0_NC), /* name */
656 FALSE, /* partial_inplace */
657 0xffff, /* src_mask */
658 0xffff, /* dst_mask */
659 TRUE), /* pcrel_offset */
660
661 /* MOV[NZ]: ((S+A-P) >> 16) & 0xffff */
662 HOWTO64 (AARCH64_R (MOVW_PREL_G1), /* type */
663 16, /* rightshift */
664 2, /* size (0 = byte, 1 = short, 2 = long) */
665 17, /* bitsize */
666 TRUE, /* pc_relative */
667 0, /* bitpos */
668 complain_overflow_signed, /* complain_on_overflow */
669 bfd_elf_generic_reloc, /* special_function */
670 AARCH64_R_STR (MOVW_PREL_G1), /* name */
671 FALSE, /* partial_inplace */
672 0xffff, /* src_mask */
673 0xffff, /* dst_mask */
674 TRUE), /* pcrel_offset */
675
676 /* MOVK: ((S+A-P) >> 16) & 0xffff [no overflow check] */
677 HOWTO64 (AARCH64_R (MOVW_PREL_G1_NC), /* type */
678 16, /* rightshift */
679 2, /* size (0 = byte, 1 = short, 2 = long) */
680 16, /* bitsize */
681 TRUE, /* pc_relative */
682 0, /* bitpos */
683 complain_overflow_dont, /* complain_on_overflow */
684 bfd_elf_generic_reloc, /* special_function */
685 AARCH64_R_STR (MOVW_PREL_G1_NC), /* name */
686 FALSE, /* partial_inplace */
687 0xffff, /* src_mask */
688 0xffff, /* dst_mask */
689 TRUE), /* pcrel_offset */
690
691 /* MOV[NZ]: ((S+A-P) >> 32) & 0xffff */
692 HOWTO64 (AARCH64_R (MOVW_PREL_G2), /* type */
693 32, /* rightshift */
694 2, /* size (0 = byte, 1 = short, 2 = long) */
695 17, /* bitsize */
696 TRUE, /* pc_relative */
697 0, /* bitpos */
698 complain_overflow_signed, /* complain_on_overflow */
699 bfd_elf_generic_reloc, /* special_function */
700 AARCH64_R_STR (MOVW_PREL_G2), /* name */
701 FALSE, /* partial_inplace */
702 0xffff, /* src_mask */
703 0xffff, /* dst_mask */
704 TRUE), /* pcrel_offset */
705
706 /* MOVK: ((S+A-P) >> 32) & 0xffff [no overflow check] */
707 HOWTO64 (AARCH64_R (MOVW_PREL_G2_NC), /* type */
708 32, /* rightshift */
709 2, /* size (0 = byte, 1 = short, 2 = long) */
710 16, /* bitsize */
711 TRUE, /* pc_relative */
712 0, /* bitpos */
713 complain_overflow_dont, /* complain_on_overflow */
714 bfd_elf_generic_reloc, /* special_function */
715 AARCH64_R_STR (MOVW_PREL_G2_NC), /* name */
716 FALSE, /* partial_inplace */
717 0xffff, /* src_mask */
718 0xffff, /* dst_mask */
719 TRUE), /* pcrel_offset */
720
721 /* MOV[NZ]: ((S+A-P) >> 48) & 0xffff */
722 HOWTO64 (AARCH64_R (MOVW_PREL_G3), /* type */
723 48, /* rightshift */
724 2, /* size (0 = byte, 1 = short, 2 = long) */
725 16, /* bitsize */
726 TRUE, /* pc_relative */
727 0, /* bitpos */
728 complain_overflow_dont, /* complain_on_overflow */
729 bfd_elf_generic_reloc, /* special_function */
730 AARCH64_R_STR (MOVW_PREL_G3), /* name */
731 FALSE, /* partial_inplace */
732 0xffff, /* src_mask */
733 0xffff, /* dst_mask */
734 TRUE), /* pcrel_offset */
735
a06ea964
NC		 736/* Relocations to generate 19, 21 and 33 bit PC-relative load/store
737 addresses: PG(x) is (x & ~0xfff). */
738
739 /* LD-lit: ((S+A-P) >> 2) & 0x7ffff */
a6bb11b2 740 HOWTO (AARCH64_R (LD_PREL_LO19), /* type */
a06ea964
NC		 741 2, /* rightshift */
742 2, /* size (0 = byte, 1 = short, 2 = long) */
743 19, /* bitsize */
744 TRUE, /* pc_relative */
745 0, /* bitpos */
746 complain_overflow_signed, /* complain_on_overflow */
747 bfd_elf_generic_reloc, /* special_function */
a6bb11b2 748 AARCH64_R_STR (LD_PREL_LO19), /* name */
a06ea964
NC		 749 FALSE, /* partial_inplace */
750 0x7ffff, /* src_mask */
751 0x7ffff, /* dst_mask */
752 TRUE), /* pcrel_offset */
753
754 /* ADR: (S+A-P) & 0x1fffff */
a6bb11b2 755 HOWTO (AARCH64_R (ADR_PREL_LO21), /* type */
a06ea964
NC		 756 0, /* rightshift */
757 2, /* size (0 = byte, 1 = short, 2 = long) */
758 21, /* bitsize */
759 TRUE, /* pc_relative */
760 0, /* bitpos */
761 complain_overflow_signed, /* complain_on_overflow */
762 bfd_elf_generic_reloc, /* special_function */
a6bb11b2 763 AARCH64_R_STR (ADR_PREL_LO21), /* name */
a06ea964
NC		 764 FALSE, /* partial_inplace */
765 0x1fffff, /* src_mask */
766 0x1fffff, /* dst_mask */
767 TRUE), /* pcrel_offset */
768
769 /* ADRP: ((PG(S+A)-PG(P)) >> 12) & 0x1fffff */
a6bb11b2 770 HOWTO (AARCH64_R (ADR_PREL_PG_HI21), /* type */
a06ea964
NC		 771 12, /* rightshift */
772 2, /* size (0 = byte, 1 = short, 2 = long) */
773 21, /* bitsize */
774 TRUE, /* pc_relative */
775 0, /* bitpos */
776 complain_overflow_signed, /* complain_on_overflow */
777 bfd_elf_generic_reloc, /* special_function */
a6bb11b2 778 AARCH64_R_STR (ADR_PREL_PG_HI21), /* name */
a06ea964
NC		 779 FALSE, /* partial_inplace */
780 0x1fffff, /* src_mask */
781 0x1fffff, /* dst_mask */
782 TRUE), /* pcrel_offset */
783
784 /* ADRP: ((PG(S+A)-PG(P)) >> 12) & 0x1fffff [no overflow check] */
a6bb11b2 785 HOWTO64 (AARCH64_R (ADR_PREL_PG_HI21_NC), /* type */
a06ea964
NC		 786 12, /* rightshift */
787 2, /* size (0 = byte, 1 = short, 2 = long) */
788 21, /* bitsize */
789 TRUE, /* pc_relative */
790 0, /* bitpos */
791 complain_overflow_dont, /* complain_on_overflow */
792 bfd_elf_generic_reloc, /* special_function */
a6bb11b2 793 AARCH64_R_STR (ADR_PREL_PG_HI21_NC), /* name */
a06ea964
NC		 794 FALSE, /* partial_inplace */
795 0x1fffff, /* src_mask */
796 0x1fffff, /* dst_mask */
797 TRUE), /* pcrel_offset */
798
799 /* ADD: (S+A) & 0xfff [no overflow check] */
a6bb11b2 800 HOWTO (AARCH64_R (ADD_ABS_LO12_NC), /* type */
a06ea964
NC		 801 0, /* rightshift */
802 2, /* size (0 = byte, 1 = short, 2 = long) */
803 12, /* bitsize */
804 FALSE, /* pc_relative */
805 10, /* bitpos */
806 complain_overflow_dont, /* complain_on_overflow */
807 bfd_elf_generic_reloc, /* special_function */
a6bb11b2 808 AARCH64_R_STR (ADD_ABS_LO12_NC), /* name */
a06ea964
NC		 809 FALSE, /* partial_inplace */
810 0x3ffc00, /* src_mask */
811 0x3ffc00, /* dst_mask */
812 FALSE), /* pcrel_offset */
813
814 /* LD/ST8: (S+A) & 0xfff */
a6bb11b2 815 HOWTO (AARCH64_R (LDST8_ABS_LO12_NC), /* type */
a06ea964
NC		 816 0, /* rightshift */
817 2, /* size (0 = byte, 1 = short, 2 = long) */
818 12, /* bitsize */
819 FALSE, /* pc_relative */
820 0, /* bitpos */
821 complain_overflow_dont, /* complain_on_overflow */
822 bfd_elf_generic_reloc, /* special_function */
a6bb11b2 823 AARCH64_R_STR (LDST8_ABS_LO12_NC), /* name */
a06ea964
NC		 824 FALSE, /* partial_inplace */
825 0xfff, /* src_mask */
826 0xfff, /* dst_mask */
827 FALSE), /* pcrel_offset */
828
829 /* Relocations for control-flow instructions. */
830
831 /* TBZ/NZ: ((S+A-P) >> 2) & 0x3fff */
a6bb11b2 832 HOWTO (AARCH64_R (TSTBR14), /* type */
a06ea964
NC		 833 2, /* rightshift */
834 2, /* size (0 = byte, 1 = short, 2 = long) */
835 14, /* bitsize */
836 TRUE, /* pc_relative */
837 0, /* bitpos */
838 complain_overflow_signed, /* complain_on_overflow */
839 bfd_elf_generic_reloc, /* special_function */
a6bb11b2 840 AARCH64_R_STR (TSTBR14), /* name */
a06ea964
NC		 841 FALSE, /* partial_inplace */
842 0x3fff, /* src_mask */
843 0x3fff, /* dst_mask */
844 TRUE), /* pcrel_offset */
845
846 /* B.cond: ((S+A-P) >> 2) & 0x7ffff */
a6bb11b2 847 HOWTO (AARCH64_R (CONDBR19), /* type */
a06ea964
NC		 848 2, /* rightshift */
849 2, /* size (0 = byte, 1 = short, 2 = long) */
850 19, /* bitsize */
851 TRUE, /* pc_relative */
852 0, /* bitpos */
853 complain_overflow_signed, /* complain_on_overflow */
854 bfd_elf_generic_reloc, /* special_function */
a6bb11b2 855 AARCH64_R_STR (CONDBR19), /* name */
a06ea964
NC		 856 FALSE, /* partial_inplace */
857 0x7ffff, /* src_mask */
858 0x7ffff, /* dst_mask */
859 TRUE), /* pcrel_offset */
860
a06ea964 861 /* B: ((S+A-P) >> 2) & 0x3ffffff */
a6bb11b2 862 HOWTO (AARCH64_R (JUMP26), /* type */
a06ea964
NC		 863 2, /* rightshift */
864 2, /* size (0 = byte, 1 = short, 2 = long) */
865 26, /* bitsize */
866 TRUE, /* pc_relative */
867 0, /* bitpos */
868 complain_overflow_signed, /* complain_on_overflow */
869 bfd_elf_generic_reloc, /* special_function */
a6bb11b2 870 AARCH64_R_STR (JUMP26), /* name */
a06ea964
NC		 871 FALSE, /* partial_inplace */
872 0x3ffffff, /* src_mask */
873 0x3ffffff, /* dst_mask */
874 TRUE), /* pcrel_offset */
875
876 /* BL: ((S+A-P) >> 2) & 0x3ffffff */
a6bb11b2 877 HOWTO (AARCH64_R (CALL26), /* type */
a06ea964
NC		 878 2, /* rightshift */
879 2, /* size (0 = byte, 1 = short, 2 = long) */
880 26, /* bitsize */
881 TRUE, /* pc_relative */
882 0, /* bitpos */
883 complain_overflow_signed, /* complain_on_overflow */
884 bfd_elf_generic_reloc, /* special_function */
a6bb11b2 885 AARCH64_R_STR (CALL26), /* name */
a06ea964
NC		 886 FALSE, /* partial_inplace */
887 0x3ffffff, /* src_mask */
888 0x3ffffff, /* dst_mask */
889 TRUE), /* pcrel_offset */
890
891 /* LD/ST16: (S+A) & 0xffe */
a6bb11b2 892 HOWTO (AARCH64_R (LDST16_ABS_LO12_NC), /* type */
a06ea964
NC		 893 1, /* rightshift */
894 2, /* size (0 = byte, 1 = short, 2 = long) */
895 12, /* bitsize */
896 FALSE, /* pc_relative */
897 0, /* bitpos */
898 complain_overflow_dont, /* complain_on_overflow */
899 bfd_elf_generic_reloc, /* special_function */
a6bb11b2 900 AARCH64_R_STR (LDST16_ABS_LO12_NC), /* name */
a06ea964
NC		 901 FALSE, /* partial_inplace */
902 0xffe, /* src_mask */
903 0xffe, /* dst_mask */
904 FALSE), /* pcrel_offset */
905
906 /* LD/ST32: (S+A) & 0xffc */
a6bb11b2 907 HOWTO (AARCH64_R (LDST32_ABS_LO12_NC), /* type */
a06ea964
NC		 908 2, /* rightshift */
909 2, /* size (0 = byte, 1 = short, 2 = long) */
910 12, /* bitsize */
911 FALSE, /* pc_relative */
912 0, /* bitpos */
913 complain_overflow_dont, /* complain_on_overflow */
914 bfd_elf_generic_reloc, /* special_function */
a6bb11b2 915 AARCH64_R_STR (LDST32_ABS_LO12_NC), /* name */
a06ea964
NC		 916 FALSE, /* partial_inplace */
917 0xffc, /* src_mask */
918 0xffc, /* dst_mask */
919 FALSE), /* pcrel_offset */
920
921 /* LD/ST64: (S+A) & 0xff8 */
a6bb11b2 922 HOWTO (AARCH64_R (LDST64_ABS_LO12_NC), /* type */
a06ea964
NC		 923 3, /* rightshift */
924 2, /* size (0 = byte, 1 = short, 2 = long) */
925 12, /* bitsize */
926 FALSE, /* pc_relative */
927 0, /* bitpos */
928 complain_overflow_dont, /* complain_on_overflow */
929 bfd_elf_generic_reloc, /* special_function */
a6bb11b2 930 AARCH64_R_STR (LDST64_ABS_LO12_NC), /* name */
a06ea964
NC		 931 FALSE, /* partial_inplace */
932 0xff8, /* src_mask */
933 0xff8, /* dst_mask */
934 FALSE), /* pcrel_offset */
935
a06ea964 936 /* LD/ST128: (S+A) & 0xff0 */
a6bb11b2 937 HOWTO (AARCH64_R (LDST128_ABS_LO12_NC), /* type */
a06ea964
NC		 938 4, /* rightshift */
939 2, /* size (0 = byte, 1 = short, 2 = long) */
940 12, /* bitsize */
941 FALSE, /* pc_relative */
942 0, /* bitpos */
943 complain_overflow_dont, /* complain_on_overflow */
944 bfd_elf_generic_reloc, /* special_function */
a6bb11b2 945 AARCH64_R_STR (LDST128_ABS_LO12_NC), /* name */
a06ea964
NC		 946 FALSE, /* partial_inplace */
947 0xff0, /* src_mask */
948 0xff0, /* dst_mask */
949 FALSE), /* pcrel_offset */
950
f41aef5f
RE		 951 /* Set a load-literal immediate field to bits
952 0x1FFFFC of G(S)-P */
a6bb11b2 953 HOWTO (AARCH64_R (GOT_LD_PREL19), /* type */
f41aef5f
RE		 954 2, /* rightshift */
955 2, /* size (0 = byte,1 = short,2 = long) */
956 19, /* bitsize */
957 TRUE, /* pc_relative */
958 0, /* bitpos */
959 complain_overflow_signed, /* complain_on_overflow */
960 bfd_elf_generic_reloc, /* special_function */
a6bb11b2 961 AARCH64_R_STR (GOT_LD_PREL19), /* name */
f41aef5f
RE		 962 FALSE, /* partial_inplace */
963 0xffffe0, /* src_mask */
964 0xffffe0, /* dst_mask */
965 TRUE), /* pcrel_offset */
966
a06ea964
NC		 967 /* Get to the page for the GOT entry for the symbol
968 (G(S) - P) using an ADRP instruction. */
a6bb11b2 969 HOWTO (AARCH64_R (ADR_GOT_PAGE), /* type */
a06ea964
NC		 970 12, /* rightshift */
971 2, /* size (0 = byte, 1 = short, 2 = long) */
972 21, /* bitsize */
973 TRUE, /* pc_relative */
974 0, /* bitpos */
975 complain_overflow_dont, /* complain_on_overflow */
976 bfd_elf_generic_reloc, /* special_function */
a6bb11b2 977 AARCH64_R_STR (ADR_GOT_PAGE), /* name */
a06ea964
NC		 978 FALSE, /* partial_inplace */
979 0x1fffff, /* src_mask */
980 0x1fffff, /* dst_mask */
981 TRUE), /* pcrel_offset */
982
a6bb11b2
YZ		 983 /* LD64: GOT offset G(S) & 0xff8 */
984 HOWTO64 (AARCH64_R (LD64_GOT_LO12_NC), /* type */
a06ea964
NC		 985 3, /* rightshift */
986 2, /* size (0 = byte, 1 = short, 2 = long) */
987 12, /* bitsize */
988 FALSE, /* pc_relative */
989 0, /* bitpos */
990 complain_overflow_dont, /* complain_on_overflow */
991 bfd_elf_generic_reloc, /* special_function */
a6bb11b2 992 AARCH64_R_STR (LD64_GOT_LO12_NC), /* name */
a06ea964
NC		 993 FALSE, /* partial_inplace */
994 0xff8, /* src_mask */
995 0xff8, /* dst_mask */
a6bb11b2 996 FALSE), /* pcrel_offset */
a06ea964 997
a6bb11b2
YZ		 998 /* LD32: GOT offset G(S) & 0xffc */
999 HOWTO32 (AARCH64_R (LD32_GOT_LO12_NC), /* type */
1000 2, /* rightshift */
1001 2, /* size (0 = byte, 1 = short, 2 = long) */
1002 12, /* bitsize */
1003 FALSE, /* pc_relative */
1004 0, /* bitpos */
1005 complain_overflow_dont, /* complain_on_overflow */
1006 bfd_elf_generic_reloc, /* special_function */
1007 AARCH64_R_STR (LD32_GOT_LO12_NC), /* name */
1008 FALSE, /* partial_inplace */
1009 0xffc, /* src_mask */
1010 0xffc, /* dst_mask */
1011 FALSE), /* pcrel_offset */
a06ea964 1012
ca632371
RL		 1013 /* Lower 16 bits of GOT offset for the symbol. */
1014 HOWTO64 (AARCH64_R (MOVW_GOTOFF_G0_NC), /* type */
1015 0, /* rightshift */
1016 2, /* size (0 = byte, 1 = short, 2 = long) */
1017 16, /* bitsize */
1018 FALSE, /* pc_relative */
1019 0, /* bitpos */
1020 complain_overflow_dont, /* complain_on_overflow */
1021 bfd_elf_generic_reloc, /* special_function */
1022 AARCH64_R_STR (MOVW_GOTOFF_G0_NC), /* name */
1023 FALSE, /* partial_inplace */
1024 0xffff, /* src_mask */
1025 0xffff, /* dst_mask */
1026 FALSE), /* pcrel_offset */
1027
654248e7
RL		 1028 /* Higher 16 bits of GOT offset for the symbol. */
1029 HOWTO64 (AARCH64_R (MOVW_GOTOFF_G1), /* type */
1030 16, /* rightshift */
1031 2, /* size (0 = byte, 1 = short, 2 = long) */
1032 16, /* bitsize */
1033 FALSE, /* pc_relative */
1034 0, /* bitpos */
1035 complain_overflow_unsigned, /* complain_on_overflow */
1036 bfd_elf_generic_reloc, /* special_function */
1037 AARCH64_R_STR (MOVW_GOTOFF_G1), /* name */
1038 FALSE, /* partial_inplace */
1039 0xffff, /* src_mask */
1040 0xffff, /* dst_mask */
1041 FALSE), /* pcrel_offset */
1042
87f5fbcc
RL		 1043 /* LD64: GOT offset for the symbol. */
1044 HOWTO64 (AARCH64_R (LD64_GOTOFF_LO15), /* type */
1045 3, /* rightshift */
1046 2, /* size (0 = byte, 1 = short, 2 = long) */
1047 12, /* bitsize */
1048 FALSE, /* pc_relative */
1049 0, /* bitpos */
1050 complain_overflow_unsigned, /* complain_on_overflow */
1051 bfd_elf_generic_reloc, /* special_function */
1052 AARCH64_R_STR (LD64_GOTOFF_LO15), /* name */
1053 FALSE, /* partial_inplace */
1054 0x7ff8, /* src_mask */
1055 0x7ff8, /* dst_mask */
1056 FALSE), /* pcrel_offset */
1057
3d715ce4
JW		 1058 /* LD32: GOT offset to the page address of GOT table.
1059 (G(S) - PAGE (_GLOBAL_OFFSET_TABLE_)) & 0x5ffc. */
1060 HOWTO32 (AARCH64_R (LD32_GOTPAGE_LO14), /* type */
1061 2, /* rightshift */
1062 2, /* size (0 = byte, 1 = short, 2 = long) */
1063 12, /* bitsize */
1064 FALSE, /* pc_relative */
1065 0, /* bitpos */
1066 complain_overflow_unsigned, /* complain_on_overflow */
1067 bfd_elf_generic_reloc, /* special_function */
1068 AARCH64_R_STR (LD32_GOTPAGE_LO14), /* name */
1069 FALSE, /* partial_inplace */
1070 0x5ffc, /* src_mask */
1071 0x5ffc, /* dst_mask */
1072 FALSE), /* pcrel_offset */
1073
a921b5bd
JW		 1074 /* LD64: GOT offset to the page address of GOT table.
1075 (G(S) - PAGE (_GLOBAL_OFFSET_TABLE_)) & 0x7ff8. */
1076 HOWTO64 (AARCH64_R (LD64_GOTPAGE_LO15), /* type */
1077 3, /* rightshift */
1078 2, /* size (0 = byte, 1 = short, 2 = long) */
1079 12, /* bitsize */
1080 FALSE, /* pc_relative */
1081 0, /* bitpos */
1082 complain_overflow_unsigned, /* complain_on_overflow */
1083 bfd_elf_generic_reloc, /* special_function */
1084 AARCH64_R_STR (LD64_GOTPAGE_LO15), /* name */
1085 FALSE, /* partial_inplace */
1086 0x7ff8, /* src_mask */
1087 0x7ff8, /* dst_mask */
1088 FALSE), /* pcrel_offset */
1089
a06ea964
NC		 1090 /* Get to the page for the GOT entry for the symbol
1091 (G(S) - P) using an ADRP instruction. */
a6bb11b2 1092 HOWTO (AARCH64_R (TLSGD_ADR_PAGE21), /* type */
a06ea964
NC		 1093 12, /* rightshift */
1094 2, /* size (0 = byte, 1 = short, 2 = long) */
1095 21, /* bitsize */
1096 TRUE, /* pc_relative */
1097 0, /* bitpos */
1098 complain_overflow_dont, /* complain_on_overflow */
1099 bfd_elf_generic_reloc, /* special_function */
a6bb11b2 1100 AARCH64_R_STR (TLSGD_ADR_PAGE21), /* name */
a06ea964
NC		 1101 FALSE, /* partial_inplace */
1102 0x1fffff, /* src_mask */
1103 0x1fffff, /* dst_mask */
1104 TRUE), /* pcrel_offset */
1105
3c12b054
MS		 1106 HOWTO (AARCH64_R (TLSGD_ADR_PREL21), /* type */
1107 0, /* rightshift */
1108 2, /* size (0 = byte, 1 = short, 2 = long) */
1109 21, /* bitsize */
1110 TRUE, /* pc_relative */
1111 0, /* bitpos */
1112 complain_overflow_dont, /* complain_on_overflow */
1113 bfd_elf_generic_reloc, /* special_function */
1114 AARCH64_R_STR (TLSGD_ADR_PREL21), /* name */
1115 FALSE, /* partial_inplace */
1116 0x1fffff, /* src_mask */
1117 0x1fffff, /* dst_mask */
1118 TRUE), /* pcrel_offset */
1119
a06ea964 1120 /* ADD: GOT offset G(S) & 0xff8 [no overflow check] */
a6bb11b2 1121 HOWTO (AARCH64_R (TLSGD_ADD_LO12_NC), /* type */
a06ea964
NC		 1122 0, /* rightshift */
1123 2, /* size (0 = byte, 1 = short, 2 = long) */
1124 12, /* bitsize */
1125 FALSE, /* pc_relative */
1126 0, /* bitpos */
1127 complain_overflow_dont, /* complain_on_overflow */
1128 bfd_elf_generic_reloc, /* special_function */
a6bb11b2 1129 AARCH64_R_STR (TLSGD_ADD_LO12_NC), /* name */
a06ea964
NC		 1130 FALSE, /* partial_inplace */
1131 0xfff, /* src_mask */
1132 0xfff, /* dst_mask */
1133 FALSE), /* pcrel_offset */
1134
3e8286c0
RL		 1135 /* Lower 16 bits of GOT offset to tls_index. */
1136 HOWTO64 (AARCH64_R (TLSGD_MOVW_G0_NC), /* type */
1137 0, /* rightshift */
1138 2, /* size (0 = byte, 1 = short, 2 = long) */
1139 16, /* bitsize */
1140 FALSE, /* pc_relative */
1141 0, /* bitpos */
1142 complain_overflow_dont, /* complain_on_overflow */
1143 bfd_elf_generic_reloc, /* special_function */
1144 AARCH64_R_STR (TLSGD_MOVW_G0_NC), /* name */
1145 FALSE, /* partial_inplace */
1146 0xffff, /* src_mask */
1147 0xffff, /* dst_mask */
1148 FALSE), /* pcrel_offset */
1149
1aa66fb1
RL		 1150 /* Higher 16 bits of GOT offset to tls_index. */
1151 HOWTO64 (AARCH64_R (TLSGD_MOVW_G1), /* type */
1152 16, /* rightshift */
1153 2, /* size (0 = byte, 1 = short, 2 = long) */
1154 16, /* bitsize */
1155 FALSE, /* pc_relative */
1156 0, /* bitpos */
1157 complain_overflow_unsigned, /* complain_on_overflow */
1158 bfd_elf_generic_reloc, /* special_function */
1159 AARCH64_R_STR (TLSGD_MOVW_G1), /* name */
1160 FALSE, /* partial_inplace */
1161 0xffff, /* src_mask */
1162 0xffff, /* dst_mask */
1163 FALSE), /* pcrel_offset */
1164
a6bb11b2 1165 HOWTO (AARCH64_R (TLSIE_ADR_GOTTPREL_PAGE21), /* type */
a06ea964
NC		 1166 12, /* rightshift */
1167 2, /* size (0 = byte, 1 = short, 2 = long) */
1168 21, /* bitsize */
1169 FALSE, /* pc_relative */
1170 0, /* bitpos */
1171 complain_overflow_dont, /* complain_on_overflow */
1172 bfd_elf_generic_reloc, /* special_function */
a6bb11b2 1173 AARCH64_R_STR (TLSIE_ADR_GOTTPREL_PAGE21), /* name */
a06ea964
NC		 1174 FALSE, /* partial_inplace */
1175 0x1fffff, /* src_mask */
1176 0x1fffff, /* dst_mask */
1177 FALSE), /* pcrel_offset */
1178
a6bb11b2 1179 HOWTO64 (AARCH64_R (TLSIE_LD64_GOTTPREL_LO12_NC), /* type */
a06ea964
NC		 1180 3, /* rightshift */
1181 2, /* size (0 = byte, 1 = short, 2 = long) */
1182 12, /* bitsize */
1183 FALSE, /* pc_relative */
1184 0, /* bitpos */
1185 complain_overflow_dont, /* complain_on_overflow */
1186 bfd_elf_generic_reloc, /* special_function */
a6bb11b2 1187 AARCH64_R_STR (TLSIE_LD64_GOTTPREL_LO12_NC), /* name */
a06ea964
NC		 1188 FALSE, /* partial_inplace */
1189 0xff8, /* src_mask */
1190 0xff8, /* dst_mask */
1191 FALSE), /* pcrel_offset */
1192
a6bb11b2
YZ		 1193 HOWTO32 (AARCH64_R (TLSIE_LD32_GOTTPREL_LO12_NC), /* type */
1194 2, /* rightshift */
1195 2, /* size (0 = byte, 1 = short, 2 = long) */
1196 12, /* bitsize */
1197 FALSE, /* pc_relative */
1198 0, /* bitpos */
1199 complain_overflow_dont, /* complain_on_overflow */
1200 bfd_elf_generic_reloc, /* special_function */
1201 AARCH64_R_STR (TLSIE_LD32_GOTTPREL_LO12_NC), /* name */
1202 FALSE, /* partial_inplace */
1203 0xffc, /* src_mask */
1204 0xffc, /* dst_mask */
1205 FALSE), /* pcrel_offset */
1206
1207 HOWTO (AARCH64_R (TLSIE_LD_GOTTPREL_PREL19), /* type */
bb3f9ed8 1208 2, /* rightshift */
a06ea964 1209 2, /* size (0 = byte, 1 = short, 2 = long) */
043bf05a 1210 19, /* bitsize */
a06ea964
NC		 1211 FALSE, /* pc_relative */
1212 0, /* bitpos */
1213 complain_overflow_dont, /* complain_on_overflow */
1214 bfd_elf_generic_reloc, /* special_function */
a6bb11b2 1215 AARCH64_R_STR (TLSIE_LD_GOTTPREL_PREL19), /* name */
a06ea964
NC		 1216 FALSE, /* partial_inplace */
1217 0x1ffffc, /* src_mask */
1218 0x1ffffc, /* dst_mask */
1219 FALSE), /* pcrel_offset */
1220
3b957e5b
RL		 1221 HOWTO64 (AARCH64_R (TLSIE_MOVW_GOTTPREL_G0_NC), /* type */
1222 0, /* rightshift */
1223 2, /* size (0 = byte, 1 = short, 2 = long) */
1224 16, /* bitsize */
1225 FALSE, /* pc_relative */
1226 0, /* bitpos */
1227 complain_overflow_dont, /* complain_on_overflow */
1228 bfd_elf_generic_reloc, /* special_function */
1229 AARCH64_R_STR (TLSIE_MOVW_GOTTPREL_G0_NC), /* name */
1230 FALSE, /* partial_inplace */
1231 0xffff, /* src_mask */
1232 0xffff, /* dst_mask */
1233 FALSE), /* pcrel_offset */
1234
1235 HOWTO64 (AARCH64_R (TLSIE_MOVW_GOTTPREL_G1), /* type */
1236 16, /* rightshift */
1237 2, /* size (0 = byte, 1 = short, 2 = long) */
1238 16, /* bitsize */
1239 FALSE, /* pc_relative */
1240 0, /* bitpos */
1241 complain_overflow_unsigned, /* complain_on_overflow */
1242 bfd_elf_generic_reloc, /* special_function */
1243 AARCH64_R_STR (TLSIE_MOVW_GOTTPREL_G1), /* name */
1244 FALSE, /* partial_inplace */
1245 0xffff, /* src_mask */
1246 0xffff, /* dst_mask */
1247 FALSE), /* pcrel_offset */
1248
49df5539
JW		 1249 /* ADD: bit[23:12] of byte offset to module TLS base address. */
1250 HOWTO (AARCH64_R (TLSLD_ADD_DTPREL_HI12), /* type */
1251 12, /* rightshift */
1252 2, /* size (0 = byte, 1 = short, 2 = long) */
1253 12, /* bitsize */
1254 FALSE, /* pc_relative */
1255 0, /* bitpos */
1256 complain_overflow_unsigned, /* complain_on_overflow */
1257 bfd_elf_generic_reloc, /* special_function */
1258 AARCH64_R_STR (TLSLD_ADD_DTPREL_HI12), /* name */
1259 FALSE, /* partial_inplace */
1260 0xfff, /* src_mask */
1261 0xfff, /* dst_mask */
1262 FALSE), /* pcrel_offset */
1263
70151fb5
JW		 1264 /* Unsigned 12 bit byte offset to module TLS base address. */
1265 HOWTO (AARCH64_R (TLSLD_ADD_DTPREL_LO12), /* type */
1266 0, /* rightshift */
1267 2, /* size (0 = byte, 1 = short, 2 = long) */
1268 12, /* bitsize */
1269 FALSE, /* pc_relative */
1270 0, /* bitpos */
1271 complain_overflow_unsigned, /* complain_on_overflow */
1272 bfd_elf_generic_reloc, /* special_function */
1273 AARCH64_R_STR (TLSLD_ADD_DTPREL_LO12), /* name */
1274 FALSE, /* partial_inplace */
1275 0xfff, /* src_mask */
1276 0xfff, /* dst_mask */
1277 FALSE), /* pcrel_offset */
13289c10
JW		 1278
1279 /* No overflow check version of BFD_RELOC_AARCH64_TLSLD_ADD_DTPREL_LO12. */
1280 HOWTO (AARCH64_R (TLSLD_ADD_DTPREL_LO12_NC), /* type */
1281 0, /* rightshift */
1282 2, /* size (0 = byte, 1 = short, 2 = long) */
1283 12, /* bitsize */
1284 FALSE, /* pc_relative */
1285 0, /* bitpos */
1286 complain_overflow_dont, /* complain_on_overflow */
1287 bfd_elf_generic_reloc, /* special_function */
1288 AARCH64_R_STR (TLSLD_ADD_DTPREL_LO12_NC), /* name */
1289 FALSE, /* partial_inplace */
1290 0xfff, /* src_mask */
1291 0xfff, /* dst_mask */
1292 FALSE), /* pcrel_offset */
70151fb5 1293
a12fad50
JW		 1294 /* ADD: GOT offset G(S) & 0xff8 [no overflow check] */
1295 HOWTO (AARCH64_R (TLSLD_ADD_LO12_NC), /* type */
1296 0, /* rightshift */
1297 2, /* size (0 = byte, 1 = short, 2 = long) */
1298 12, /* bitsize */
1299 FALSE, /* pc_relative */
1300 0, /* bitpos */
1301 complain_overflow_dont, /* complain_on_overflow */
1302 bfd_elf_generic_reloc, /* special_function */
1303 AARCH64_R_STR (TLSLD_ADD_LO12_NC), /* name */
1304 FALSE, /* partial_inplace */
1305 0xfff, /* src_mask */
1306 0xfff, /* dst_mask */
1307 FALSE), /* pcrel_offset */
1308
1107e076
JW		 1309 /* Get to the page for the GOT entry for the symbol
1310 (G(S) - P) using an ADRP instruction. */
1311 HOWTO (AARCH64_R (TLSLD_ADR_PAGE21), /* type */
1312 12, /* rightshift */
1313 2, /* size (0 = byte, 1 = short, 2 = long) */
1314 21, /* bitsize */
1315 TRUE, /* pc_relative */
1316 0, /* bitpos */
1317 complain_overflow_signed, /* complain_on_overflow */
1318 bfd_elf_generic_reloc, /* special_function */
1319 AARCH64_R_STR (TLSLD_ADR_PAGE21), /* name */
1320 FALSE, /* partial_inplace */
1321 0x1fffff, /* src_mask */
1322 0x1fffff, /* dst_mask */
1323 TRUE), /* pcrel_offset */
1324
6c37fedc
JW		 1325 HOWTO (AARCH64_R (TLSLD_ADR_PREL21), /* type */
1326 0, /* rightshift */
1327 2, /* size (0 = byte, 1 = short, 2 = long) */
1328 21, /* bitsize */
1329 TRUE, /* pc_relative */
1330 0, /* bitpos */
1331 complain_overflow_signed, /* complain_on_overflow */
1332 bfd_elf_generic_reloc, /* special_function */
1333 AARCH64_R_STR (TLSLD_ADR_PREL21), /* name */
1334 FALSE, /* partial_inplace */
1335 0x1fffff, /* src_mask */
1336 0x1fffff, /* dst_mask */
1337 TRUE), /* pcrel_offset */
1338
4c562523
JW		 1339 /* LD/ST16: bit[11:1] of byte offset to module TLS base address. */
1340 HOWTO64 (AARCH64_R (TLSLD_LDST16_DTPREL_LO12), /* type */
1341 1, /* rightshift */
1342 2, /* size (0 = byte, 1 = short, 2 = long) */
1343 11, /* bitsize */
1344 FALSE, /* pc_relative */
1345 10, /* bitpos */
1346 complain_overflow_unsigned, /* complain_on_overflow */
1347 bfd_elf_generic_reloc, /* special_function */
1348 AARCH64_R_STR (TLSLD_LDST16_DTPREL_LO12), /* name */
1349 FALSE, /* partial_inplace */
1350 0x1ffc00, /* src_mask */
1351 0x1ffc00, /* dst_mask */
1352 FALSE), /* pcrel_offset */
1353
1354 /* Same as BFD_RELOC_AARCH64_TLSLD_LDST16_DTPREL_LO12, but no overflow check. */
1355 HOWTO64 (AARCH64_R (TLSLD_LDST16_DTPREL_LO12_NC), /* type */
1356 1, /* rightshift */
1357 2, /* size (0 = byte, 1 = short, 2 = long) */
1358 11, /* bitsize */
1359 FALSE, /* pc_relative */
1360 10, /* bitpos */
1361 complain_overflow_dont, /* complain_on_overflow */
1362 bfd_elf_generic_reloc, /* special_function */
1363 AARCH64_R_STR (TLSLD_LDST16_DTPREL_LO12_NC), /* name */
1364 FALSE, /* partial_inplace */
1365 0x1ffc00, /* src_mask */
1366 0x1ffc00, /* dst_mask */
1367 FALSE), /* pcrel_offset */
1368
1369 /* LD/ST32: bit[11:2] of byte offset to module TLS base address. */
1370 HOWTO64 (AARCH64_R (TLSLD_LDST32_DTPREL_LO12), /* type */
1371 2, /* rightshift */
1372 2, /* size (0 = byte, 1 = short, 2 = long) */
1373 10, /* bitsize */
1374 FALSE, /* pc_relative */
1375 10, /* bitpos */
1376 complain_overflow_unsigned, /* complain_on_overflow */
1377 bfd_elf_generic_reloc, /* special_function */
1378 AARCH64_R_STR (TLSLD_LDST32_DTPREL_LO12), /* name */
1379 FALSE, /* partial_inplace */
1380 0x3ffc00, /* src_mask */
1381 0x3ffc00, /* dst_mask */
1382 FALSE), /* pcrel_offset */
1383
1384 /* Same as BFD_RELOC_AARCH64_TLSLD_LDST32_DTPREL_LO12, but no overflow check. */
1385 HOWTO64 (AARCH64_R (TLSLD_LDST32_DTPREL_LO12_NC), /* type */
1386 2, /* rightshift */
1387 2, /* size (0 = byte, 1 = short, 2 = long) */
1388 10, /* bitsize */
1389 FALSE, /* pc_relative */
1390 10, /* bitpos */
1391 complain_overflow_dont, /* complain_on_overflow */
1392 bfd_elf_generic_reloc, /* special_function */
1393 AARCH64_R_STR (TLSLD_LDST32_DTPREL_LO12_NC), /* name */
1394 FALSE, /* partial_inplace */
1395 0xffc00, /* src_mask */
1396 0xffc00, /* dst_mask */
1397 FALSE), /* pcrel_offset */
1398
1399 /* LD/ST64: bit[11:3] of byte offset to module TLS base address. */
1400 HOWTO64 (AARCH64_R (TLSLD_LDST64_DTPREL_LO12), /* type */
1401 3, /* rightshift */
1402 2, /* size (0 = byte, 1 = short, 2 = long) */
1403 9, /* bitsize */
1404 FALSE, /* pc_relative */
1405 10, /* bitpos */
1406 complain_overflow_unsigned, /* complain_on_overflow */
1407 bfd_elf_generic_reloc, /* special_function */
1408 AARCH64_R_STR (TLSLD_LDST64_DTPREL_LO12), /* name */
1409 FALSE, /* partial_inplace */
1410 0x3ffc00, /* src_mask */
1411 0x3ffc00, /* dst_mask */
1412 FALSE), /* pcrel_offset */
1413
1414 /* Same as BFD_RELOC_AARCH64_TLSLD_LDST64_DTPREL_LO12, but no overflow check. */
1415 HOWTO64 (AARCH64_R (TLSLD_LDST64_DTPREL_LO12_NC), /* type */
1416 3, /* rightshift */
1417 2, /* size (0 = byte, 1 = short, 2 = long) */
1418 9, /* bitsize */
1419 FALSE, /* pc_relative */
1420 10, /* bitpos */
1421 complain_overflow_dont, /* complain_on_overflow */
1422 bfd_elf_generic_reloc, /* special_function */
1423 AARCH64_R_STR (TLSLD_LDST64_DTPREL_LO12_NC), /* name */
1424 FALSE, /* partial_inplace */
1425 0x7fc00, /* src_mask */
1426 0x7fc00, /* dst_mask */
1427 FALSE), /* pcrel_offset */
1428
1429 /* LD/ST8: bit[11:0] of byte offset to module TLS base address. */
1430 HOWTO64 (AARCH64_R (TLSLD_LDST8_DTPREL_LO12), /* type */
1431 0, /* rightshift */
1432 2, /* size (0 = byte, 1 = short, 2 = long) */
1433 12, /* bitsize */
1434 FALSE, /* pc_relative */
1435 10, /* bitpos */
1436 complain_overflow_unsigned, /* complain_on_overflow */
1437 bfd_elf_generic_reloc, /* special_function */
1438 AARCH64_R_STR (TLSLD_LDST8_DTPREL_LO12), /* name */
1439 FALSE, /* partial_inplace */
1440 0x3ffc00, /* src_mask */
1441 0x3ffc00, /* dst_mask */
1442 FALSE), /* pcrel_offset */
1443
1444 /* Same as BFD_RELOC_AARCH64_TLSLD_LDST8_DTPREL_LO12, but no overflow check. */
1445 HOWTO64 (AARCH64_R (TLSLD_LDST8_DTPREL_LO12_NC), /* type */
1446 0, /* rightshift */
1447 2, /* size (0 = byte, 1 = short, 2 = long) */
1448 12, /* bitsize */
1449 FALSE, /* pc_relative */
1450 10, /* bitpos */
1451 complain_overflow_dont, /* complain_on_overflow */
1452 bfd_elf_generic_reloc, /* special_function */
1453 AARCH64_R_STR (TLSLD_LDST8_DTPREL_LO12_NC), /* name */
1454 FALSE, /* partial_inplace */
1455 0x3ffc00, /* src_mask */
1456 0x3ffc00, /* dst_mask */
1457 FALSE), /* pcrel_offset */
1458
49df5539
JW		 1459 /* MOVZ: bit[15:0] of byte offset to module TLS base address. */
1460 HOWTO (AARCH64_R (TLSLD_MOVW_DTPREL_G0), /* type */
1461 0, /* rightshift */
1462 2, /* size (0 = byte, 1 = short, 2 = long) */
1463 16, /* bitsize */
1464 FALSE, /* pc_relative */
1465 0, /* bitpos */
1466 complain_overflow_unsigned, /* complain_on_overflow */
1467 bfd_elf_generic_reloc, /* special_function */
1468 AARCH64_R_STR (TLSLD_MOVW_DTPREL_G0), /* name */
1469 FALSE, /* partial_inplace */
1470 0xffff, /* src_mask */
1471 0xffff, /* dst_mask */
1472 FALSE), /* pcrel_offset */
1473
1474 /* No overflow check version of BFD_RELOC_AARCH64_TLSLD_MOVW_DTPREL_G0. */
1475 HOWTO (AARCH64_R (TLSLD_MOVW_DTPREL_G0_NC), /* type */
1476 0, /* rightshift */
1477 2, /* size (0 = byte, 1 = short, 2 = long) */
1478 16, /* bitsize */
1479 FALSE, /* pc_relative */
1480 0, /* bitpos */
1481 complain_overflow_dont, /* complain_on_overflow */
1482 bfd_elf_generic_reloc, /* special_function */
1483 AARCH64_R_STR (TLSLD_MOVW_DTPREL_G0_NC), /* name */
1484 FALSE, /* partial_inplace */
1485 0xffff, /* src_mask */
1486 0xffff, /* dst_mask */
1487 FALSE), /* pcrel_offset */
1488
1489 /* MOVZ: bit[31:16] of byte offset to module TLS base address. */
1490 HOWTO (AARCH64_R (TLSLD_MOVW_DTPREL_G1), /* type */
1491 16, /* rightshift */
1492 2, /* size (0 = byte, 1 = short, 2 = long) */
1493 16, /* bitsize */
1494 FALSE, /* pc_relative */
1495 0, /* bitpos */
1496 complain_overflow_unsigned, /* complain_on_overflow */
1497 bfd_elf_generic_reloc, /* special_function */
1498 AARCH64_R_STR (TLSLD_MOVW_DTPREL_G1), /* name */
1499 FALSE, /* partial_inplace */
1500 0xffff, /* src_mask */
1501 0xffff, /* dst_mask */
1502 FALSE), /* pcrel_offset */
1503
1504 /* No overflow check version of BFD_RELOC_AARCH64_TLSLD_MOVW_DTPREL_G1. */
1505 HOWTO64 (AARCH64_R (TLSLD_MOVW_DTPREL_G1_NC), /* type */
1506 16, /* rightshift */
1507 2, /* size (0 = byte, 1 = short, 2 = long) */
1508 16, /* bitsize */
1509 FALSE, /* pc_relative */
1510 0, /* bitpos */
1511 complain_overflow_dont, /* complain_on_overflow */
1512 bfd_elf_generic_reloc, /* special_function */
1513 AARCH64_R_STR (TLSLD_MOVW_DTPREL_G1_NC), /* name */
1514 FALSE, /* partial_inplace */
1515 0xffff, /* src_mask */
1516 0xffff, /* dst_mask */
1517 FALSE), /* pcrel_offset */
1518
1519 /* MOVZ: bit[47:32] of byte offset to module TLS base address. */
1520 HOWTO64 (AARCH64_R (TLSLD_MOVW_DTPREL_G2), /* type */
1521 32, /* rightshift */
1522 2, /* size (0 = byte, 1 = short, 2 = long) */
1523 16, /* bitsize */
1524 FALSE, /* pc_relative */
1525 0, /* bitpos */
1526 complain_overflow_unsigned, /* complain_on_overflow */
1527 bfd_elf_generic_reloc, /* special_function */
1528 AARCH64_R_STR (TLSLD_MOVW_DTPREL_G2), /* name */
1529 FALSE, /* partial_inplace */
1530 0xffff, /* src_mask */
1531 0xffff, /* dst_mask */
1532 FALSE), /* pcrel_offset */
1533
a6bb11b2 1534 HOWTO64 (AARCH64_R (TLSLE_MOVW_TPREL_G2), /* type */
bb3f9ed8 1535 32, /* rightshift */
a06ea964 1536 2, /* size (0 = byte, 1 = short, 2 = long) */
07875fbc 1537 16, /* bitsize */
a06ea964
NC		 1538 FALSE, /* pc_relative */
1539 0, /* bitpos */
0172429c 1540 complain_overflow_unsigned, /* complain_on_overflow */
a06ea964 1541 bfd_elf_generic_reloc, /* special_function */
a6bb11b2 1542 AARCH64_R_STR (TLSLE_MOVW_TPREL_G2), /* name */
a06ea964
NC		 1543 FALSE, /* partial_inplace */
1544 0xffff, /* src_mask */
1545 0xffff, /* dst_mask */
1546 FALSE), /* pcrel_offset */
1547
a6bb11b2 1548 HOWTO (AARCH64_R (TLSLE_MOVW_TPREL_G1), /* type */
bb3f9ed8 1549 16, /* rightshift */
a06ea964 1550 2, /* size (0 = byte, 1 = short, 2 = long) */
07875fbc 1551 16, /* bitsize */
a06ea964
NC		 1552 FALSE, /* pc_relative */
1553 0, /* bitpos */
1554 complain_overflow_dont, /* complain_on_overflow */
1555 bfd_elf_generic_reloc, /* special_function */
a6bb11b2 1556 AARCH64_R_STR (TLSLE_MOVW_TPREL_G1), /* name */
a06ea964
NC		 1557 FALSE, /* partial_inplace */
1558 0xffff, /* src_mask */
1559 0xffff, /* dst_mask */
1560 FALSE), /* pcrel_offset */
1561
a6bb11b2 1562 HOWTO64 (AARCH64_R (TLSLE_MOVW_TPREL_G1_NC), /* type */
bb3f9ed8 1563 16, /* rightshift */
a06ea964 1564 2, /* size (0 = byte, 1 = short, 2 = long) */
07875fbc 1565 16, /* bitsize */
a06ea964
NC		 1566 FALSE, /* pc_relative */
1567 0, /* bitpos */
1568 complain_overflow_dont, /* complain_on_overflow */
1569 bfd_elf_generic_reloc, /* special_function */
a6bb11b2 1570 AARCH64_R_STR (TLSLE_MOVW_TPREL_G1_NC), /* name */
a06ea964
NC		 1571 FALSE, /* partial_inplace */
1572 0xffff, /* src_mask */
1573 0xffff, /* dst_mask */
1574 FALSE), /* pcrel_offset */
1575
a6bb11b2 1576 HOWTO (AARCH64_R (TLSLE_MOVW_TPREL_G0), /* type */
a06ea964
NC		 1577 0, /* rightshift */
1578 2, /* size (0 = byte, 1 = short, 2 = long) */
07875fbc 1579 16, /* bitsize */
a06ea964
NC		 1580 FALSE, /* pc_relative */
1581 0, /* bitpos */
1582 complain_overflow_dont, /* complain_on_overflow */
1583 bfd_elf_generic_reloc, /* special_function */
a6bb11b2 1584 AARCH64_R_STR (TLSLE_MOVW_TPREL_G0), /* name */
a06ea964
NC		 1585 FALSE, /* partial_inplace */
1586 0xffff, /* src_mask */
1587 0xffff, /* dst_mask */
1588 FALSE), /* pcrel_offset */
1589
a6bb11b2 1590 HOWTO (AARCH64_R (TLSLE_MOVW_TPREL_G0_NC), /* type */
a06ea964
NC		 1591 0, /* rightshift */
1592 2, /* size (0 = byte, 1 = short, 2 = long) */
07875fbc 1593 16, /* bitsize */
a06ea964
NC		 1594 FALSE, /* pc_relative */
1595 0, /* bitpos */
1596 complain_overflow_dont, /* complain_on_overflow */
1597 bfd_elf_generic_reloc, /* special_function */
a6bb11b2 1598 AARCH64_R_STR (TLSLE_MOVW_TPREL_G0_NC), /* name */
a06ea964
NC		 1599 FALSE, /* partial_inplace */
1600 0xffff, /* src_mask */
1601 0xffff, /* dst_mask */
1602 FALSE), /* pcrel_offset */
1603
a6bb11b2 1604 HOWTO (AARCH64_R (TLSLE_ADD_TPREL_HI12), /* type */
bb3f9ed8 1605 12, /* rightshift */
a06ea964
NC		 1606 2, /* size (0 = byte, 1 = short, 2 = long) */
1607 12, /* bitsize */
1608 FALSE, /* pc_relative */
1609 0, /* bitpos */
bab91cce 1610 complain_overflow_unsigned, /* complain_on_overflow */
a06ea964 1611 bfd_elf_generic_reloc, /* special_function */
a6bb11b2 1612 AARCH64_R_STR (TLSLE_ADD_TPREL_HI12), /* name */
a06ea964
NC		 1613 FALSE, /* partial_inplace */
1614 0xfff, /* src_mask */
1615 0xfff, /* dst_mask */
1616 FALSE), /* pcrel_offset */
1617
a6bb11b2 1618 HOWTO (AARCH64_R (TLSLE_ADD_TPREL_LO12), /* type */
a06ea964
NC		 1619 0, /* rightshift */
1620 2, /* size (0 = byte, 1 = short, 2 = long) */
1621 12, /* bitsize */
1622 FALSE, /* pc_relative */
1623 0, /* bitpos */
36e6c140 1624 complain_overflow_unsigned, /* complain_on_overflow */
a06ea964 1625 bfd_elf_generic_reloc, /* special_function */
a6bb11b2 1626 AARCH64_R_STR (TLSLE_ADD_TPREL_LO12), /* name */
a06ea964
NC		 1627 FALSE, /* partial_inplace */
1628 0xfff, /* src_mask */
1629 0xfff, /* dst_mask */
1630 FALSE), /* pcrel_offset */
1631
a6bb11b2 1632 HOWTO (AARCH64_R (TLSLE_ADD_TPREL_LO12_NC), /* type */
a06ea964
NC		 1633 0, /* rightshift */
1634 2, /* size (0 = byte, 1 = short, 2 = long) */
1635 12, /* bitsize */
1636 FALSE, /* pc_relative */
1637 0, /* bitpos */
1638 complain_overflow_dont, /* complain_on_overflow */
1639 bfd_elf_generic_reloc, /* special_function */
a6bb11b2 1640 AARCH64_R_STR (TLSLE_ADD_TPREL_LO12_NC), /* name */
a06ea964
NC		 1641 FALSE, /* partial_inplace */
1642 0xfff, /* src_mask */
1643 0xfff, /* dst_mask */
1644 FALSE), /* pcrel_offset */
a06ea964 1645
84f1b9fb
RL		 1646 /* LD/ST16: bit[11:1] of byte offset to module TLS base address. */
1647 HOWTO (AARCH64_R (TLSLE_LDST16_TPREL_LO12), /* type */
1648 1, /* rightshift */
1649 2, /* size (0 = byte, 1 = short, 2 = long) */
1650 11, /* bitsize */
1651 FALSE, /* pc_relative */
1652 10, /* bitpos */
1653 complain_overflow_unsigned, /* complain_on_overflow */
1654 bfd_elf_generic_reloc, /* special_function */
1655 AARCH64_R_STR (TLSLE_LDST16_TPREL_LO12), /* name */
1656 FALSE, /* partial_inplace */
1657 0x1ffc00, /* src_mask */
1658 0x1ffc00, /* dst_mask */
1659 FALSE), /* pcrel_offset */
1660
1661 /* Same as BFD_RELOC_AARCH64_TLSLE_LDST16_TPREL_LO12, but no overflow check. */
1662 HOWTO (AARCH64_R (TLSLE_LDST16_TPREL_LO12_NC), /* type */
1663 1, /* rightshift */
1664 2, /* size (0 = byte, 1 = short, 2 = long) */
1665 11, /* bitsize */
1666 FALSE, /* pc_relative */
1667 10, /* bitpos */
1668 complain_overflow_dont, /* complain_on_overflow */
1669 bfd_elf_generic_reloc, /* special_function */
1670 AARCH64_R_STR (TLSLE_LDST16_TPREL_LO12_NC), /* name */
1671 FALSE, /* partial_inplace */
1672 0x1ffc00, /* src_mask */
1673 0x1ffc00, /* dst_mask */
1674 FALSE), /* pcrel_offset */
1675
1676 /* LD/ST32: bit[11:2] of byte offset to module TLS base address. */
1677 HOWTO (AARCH64_R (TLSLE_LDST32_TPREL_LO12), /* type */
1678 2, /* rightshift */
1679 2, /* size (0 = byte, 1 = short, 2 = long) */
1680 10, /* bitsize */
1681 FALSE, /* pc_relative */
1682 10, /* bitpos */
1683 complain_overflow_unsigned, /* complain_on_overflow */
1684 bfd_elf_generic_reloc, /* special_function */
1685 AARCH64_R_STR (TLSLE_LDST32_TPREL_LO12), /* name */
1686 FALSE, /* partial_inplace */
1687 0xffc00, /* src_mask */
1688 0xffc00, /* dst_mask */
1689 FALSE), /* pcrel_offset */
1690
1691 /* Same as BFD_RELOC_AARCH64_TLSLE_LDST32_TPREL_LO12, but no overflow check. */
1692 HOWTO (AARCH64_R (TLSLE_LDST32_TPREL_LO12_NC), /* type */
1693 2, /* rightshift */
1694 2, /* size (0 = byte, 1 = short, 2 = long) */
1695 10, /* bitsize */
1696 FALSE, /* pc_relative */
1697 10, /* bitpos */
1698 complain_overflow_dont, /* complain_on_overflow */
1699 bfd_elf_generic_reloc, /* special_function */
1700 AARCH64_R_STR (TLSLE_LDST32_TPREL_LO12_NC), /* name */
1701 FALSE, /* partial_inplace */
1702 0xffc00, /* src_mask */
1703 0xffc00, /* dst_mask */
1704 FALSE), /* pcrel_offset */
1705
1706 /* LD/ST64: bit[11:3] of byte offset to module TLS base address. */
1707 HOWTO (AARCH64_R (TLSLE_LDST64_TPREL_LO12), /* type */
1708 3, /* rightshift */
1709 2, /* size (0 = byte, 1 = short, 2 = long) */
1710 9, /* bitsize */
1711 FALSE, /* pc_relative */
1712 10, /* bitpos */
1713 complain_overflow_unsigned, /* complain_on_overflow */
1714 bfd_elf_generic_reloc, /* special_function */
1715 AARCH64_R_STR (TLSLE_LDST64_TPREL_LO12), /* name */
1716 FALSE, /* partial_inplace */
1717 0x7fc00, /* src_mask */
1718 0x7fc00, /* dst_mask */
1719 FALSE), /* pcrel_offset */
1720
1721 /* Same as BFD_RELOC_AARCH64_TLSLE_LDST64_TPREL_LO12, but no overflow check. */
1722 HOWTO (AARCH64_R (TLSLE_LDST64_TPREL_LO12_NC), /* type */
1723 3, /* rightshift */
1724 2, /* size (0 = byte, 1 = short, 2 = long) */
1725 9, /* bitsize */
1726 FALSE, /* pc_relative */
1727 10, /* bitpos */
1728 complain_overflow_dont, /* complain_on_overflow */
1729 bfd_elf_generic_reloc, /* special_function */
1730 AARCH64_R_STR (TLSLE_LDST64_TPREL_LO12_NC), /* name */
1731 FALSE, /* partial_inplace */
1732 0x7fc00, /* src_mask */
1733 0x7fc00, /* dst_mask */
1734 FALSE), /* pcrel_offset */
1735
1736 /* LD/ST8: bit[11:0] of byte offset to module TLS base address. */
1737 HOWTO (AARCH64_R (TLSLE_LDST8_TPREL_LO12), /* type */
1738 0, /* rightshift */
1739 2, /* size (0 = byte, 1 = short, 2 = long) */
1740 12, /* bitsize */
1741 FALSE, /* pc_relative */
1742 10, /* bitpos */
1743 complain_overflow_unsigned, /* complain_on_overflow */
1744 bfd_elf_generic_reloc, /* special_function */
1745 AARCH64_R_STR (TLSLE_LDST8_TPREL_LO12), /* name */
1746 FALSE, /* partial_inplace */
1747 0x3ffc00, /* src_mask */
1748 0x3ffc00, /* dst_mask */
1749 FALSE), /* pcrel_offset */
1750
1751 /* Same as BFD_RELOC_AARCH64_TLSLE_LDST8_TPREL_LO12, but no overflow check. */
1752 HOWTO (AARCH64_R (TLSLE_LDST8_TPREL_LO12_NC), /* type */
1753 0, /* rightshift */
1754 2, /* size (0 = byte, 1 = short, 2 = long) */
1755 12, /* bitsize */
1756 FALSE, /* pc_relative */
1757 10, /* bitpos */
1758 complain_overflow_dont, /* complain_on_overflow */
1759 bfd_elf_generic_reloc, /* special_function */
1760 AARCH64_R_STR (TLSLE_LDST8_TPREL_LO12_NC), /* name */
1761 FALSE, /* partial_inplace */
1762 0x3ffc00, /* src_mask */
1763 0x3ffc00, /* dst_mask */
1764 FALSE), /* pcrel_offset */
1765
a6bb11b2 1766 HOWTO (AARCH64_R (TLSDESC_LD_PREL19), /* type */
bb3f9ed8 1767 2, /* rightshift */
a06ea964 1768 2, /* size (0 = byte, 1 = short, 2 = long) */
1ada945d 1769 19, /* bitsize */
a06ea964
NC		 1770 TRUE, /* pc_relative */
1771 0, /* bitpos */
1772 complain_overflow_dont, /* complain_on_overflow */
1773 bfd_elf_generic_reloc, /* special_function */
a6bb11b2 1774 AARCH64_R_STR (TLSDESC_LD_PREL19), /* name */
a06ea964 1775 FALSE, /* partial_inplace */
1ada945d
MS		 1776 0x0ffffe0, /* src_mask */
1777 0x0ffffe0, /* dst_mask */
a06ea964
NC		 1778 TRUE), /* pcrel_offset */
1779
a6bb11b2 1780 HOWTO (AARCH64_R (TLSDESC_ADR_PREL21), /* type */
a06ea964
NC		 1781 0, /* rightshift */
1782 2, /* size (0 = byte, 1 = short, 2 = long) */
1783 21, /* bitsize */
1784 TRUE, /* pc_relative */
1785 0, /* bitpos */
1786 complain_overflow_dont, /* complain_on_overflow */
1787 bfd_elf_generic_reloc, /* special_function */
a6bb11b2 1788 AARCH64_R_STR (TLSDESC_ADR_PREL21), /* name */
a06ea964
NC		 1789 FALSE, /* partial_inplace */
1790 0x1fffff, /* src_mask */
1791 0x1fffff, /* dst_mask */
1792 TRUE), /* pcrel_offset */
1793
1794 /* Get to the page for the GOT entry for the symbol
1795 (G(S) - P) using an ADRP instruction. */
a6bb11b2 1796 HOWTO (AARCH64_R (TLSDESC_ADR_PAGE21), /* type */
a06ea964
NC		 1797 12, /* rightshift */
1798 2, /* size (0 = byte, 1 = short, 2 = long) */
1799 21, /* bitsize */
1800 TRUE, /* pc_relative */
1801 0, /* bitpos */
1802 complain_overflow_dont, /* complain_on_overflow */
1803 bfd_elf_generic_reloc, /* special_function */
a6bb11b2 1804 AARCH64_R_STR (TLSDESC_ADR_PAGE21), /* name */
a06ea964
NC		 1805 FALSE, /* partial_inplace */
1806 0x1fffff, /* src_mask */
1807 0x1fffff, /* dst_mask */
1808 TRUE), /* pcrel_offset */
1809
a6bb11b2 1810 /* LD64: GOT offset G(S) & 0xff8. */
f955cccf 1811 HOWTO64 (AARCH64_R (TLSDESC_LD64_LO12), /* type */
a06ea964
NC		 1812 3, /* rightshift */
1813 2, /* size (0 = byte, 1 = short, 2 = long) */
1814 12, /* bitsize */
1815 FALSE, /* pc_relative */
1816 0, /* bitpos */
1817 complain_overflow_dont, /* complain_on_overflow */
1818 bfd_elf_generic_reloc, /* special_function */
f955cccf 1819 AARCH64_R_STR (TLSDESC_LD64_LO12), /* name */
a06ea964 1820 FALSE, /* partial_inplace */
a6bb11b2
YZ		 1821 0xff8, /* src_mask */
1822 0xff8, /* dst_mask */
1823 FALSE), /* pcrel_offset */
1824
1825 /* LD32: GOT offset G(S) & 0xffc. */
1826 HOWTO32 (AARCH64_R (TLSDESC_LD32_LO12_NC), /* type */
1827 2, /* rightshift */
1828 2, /* size (0 = byte, 1 = short, 2 = long) */
1829 12, /* bitsize */
1830 FALSE, /* pc_relative */
1831 0, /* bitpos */
1832 complain_overflow_dont, /* complain_on_overflow */
1833 bfd_elf_generic_reloc, /* special_function */
1834 AARCH64_R_STR (TLSDESC_LD32_LO12_NC), /* name */
1835 FALSE, /* partial_inplace */
1836 0xffc, /* src_mask */
1837 0xffc, /* dst_mask */
a06ea964
NC		 1838 FALSE), /* pcrel_offset */
1839
1840 /* ADD: GOT offset G(S) & 0xfff. */
f955cccf 1841 HOWTO (AARCH64_R (TLSDESC_ADD_LO12), /* type */
a06ea964
NC		 1842 0, /* rightshift */
1843 2, /* size (0 = byte, 1 = short, 2 = long) */
1844 12, /* bitsize */
1845 FALSE, /* pc_relative */
1846 0, /* bitpos */
f955cccf 1847 complain_overflow_dont,/* complain_on_overflow */
a06ea964 1848 bfd_elf_generic_reloc, /* special_function */
f955cccf 1849 AARCH64_R_STR (TLSDESC_ADD_LO12), /* name */
a06ea964
NC		 1850 FALSE, /* partial_inplace */
1851 0xfff, /* src_mask */
1852 0xfff, /* dst_mask */
1853 FALSE), /* pcrel_offset */
1854
a6bb11b2 1855 HOWTO64 (AARCH64_R (TLSDESC_OFF_G1), /* type */
bb3f9ed8 1856 16, /* rightshift */
a06ea964
NC		 1857 2, /* size (0 = byte, 1 = short, 2 = long) */
1858 12, /* bitsize */
1859 FALSE, /* pc_relative */
1860 0, /* bitpos */
43a357f9 1861 complain_overflow_unsigned, /* complain_on_overflow */
a06ea964 1862 bfd_elf_generic_reloc, /* special_function */
a6bb11b2 1863 AARCH64_R_STR (TLSDESC_OFF_G1), /* name */
a06ea964
NC		 1864 FALSE, /* partial_inplace */
1865 0xffff, /* src_mask */
1866 0xffff, /* dst_mask */
1867 FALSE), /* pcrel_offset */
1868
a6bb11b2 1869 HOWTO64 (AARCH64_R (TLSDESC_OFF_G0_NC), /* type */
a06ea964
NC		 1870 0, /* rightshift */
1871 2, /* size (0 = byte, 1 = short, 2 = long) */
1872 12, /* bitsize */
1873 FALSE, /* 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_OFF_G0_NC), /* name */
a06ea964
NC		 1878 FALSE, /* partial_inplace */
1879 0xffff, /* src_mask */
1880 0xffff, /* dst_mask */
1881 FALSE), /* pcrel_offset */
1882
a6bb11b2 1883 HOWTO64 (AARCH64_R (TLSDESC_LDR), /* type */
a06ea964
NC		 1884 0, /* rightshift */
1885 2, /* size (0 = byte, 1 = short, 2 = long) */
1886 12, /* bitsize */
1887 FALSE, /* pc_relative */
1888 0, /* bitpos */
1889 complain_overflow_dont, /* complain_on_overflow */
1890 bfd_elf_generic_reloc, /* special_function */
a6bb11b2 1891 AARCH64_R_STR (TLSDESC_LDR), /* name */
a06ea964
NC		 1892 FALSE, /* partial_inplace */
1893 0x0, /* src_mask */
1894 0x0, /* dst_mask */
1895 FALSE), /* pcrel_offset */
1896
a6bb11b2 1897 HOWTO64 (AARCH64_R (TLSDESC_ADD), /* type */
a06ea964
NC		 1898 0, /* rightshift */
1899 2, /* size (0 = byte, 1 = short, 2 = long) */
1900 12, /* bitsize */
1901 FALSE, /* pc_relative */
1902 0, /* bitpos */
1903 complain_overflow_dont, /* complain_on_overflow */
1904 bfd_elf_generic_reloc, /* special_function */
a6bb11b2 1905 AARCH64_R_STR (TLSDESC_ADD), /* name */
a06ea964
NC		 1906 FALSE, /* partial_inplace */
1907 0x0, /* src_mask */
1908 0x0, /* dst_mask */
1909 FALSE), /* pcrel_offset */
1910
a6bb11b2 1911 HOWTO (AARCH64_R (TLSDESC_CALL), /* type */
a06ea964
NC		 1912 0, /* rightshift */
1913 2, /* size (0 = byte, 1 = short, 2 = long) */
7366006f 1914 0, /* bitsize */
a06ea964
NC		 1915 FALSE, /* pc_relative */
1916 0, /* bitpos */
1917 complain_overflow_dont, /* complain_on_overflow */
1918 bfd_elf_generic_reloc, /* special_function */
a6bb11b2 1919 AARCH64_R_STR (TLSDESC_CALL), /* name */
a06ea964
NC		 1920 FALSE, /* partial_inplace */
1921 0x0, /* src_mask */
1922 0x0, /* dst_mask */
1923 FALSE), /* pcrel_offset */
a6bb11b2
YZ		 1924
1925 HOWTO (AARCH64_R (COPY), /* type */
1926 0, /* rightshift */
1927 2, /* size (0 = byte, 1 = short, 2 = long) */
1928 64, /* bitsize */
1929 FALSE, /* pc_relative */
1930 0, /* bitpos */
1931 complain_overflow_bitfield, /* complain_on_overflow */
1932 bfd_elf_generic_reloc, /* special_function */
1933 AARCH64_R_STR (COPY), /* name */
1934 TRUE, /* partial_inplace */
1935 0xffffffff, /* src_mask */
1936 0xffffffff, /* dst_mask */
1937 FALSE), /* pcrel_offset */
1938
1939 HOWTO (AARCH64_R (GLOB_DAT), /* type */
1940 0, /* rightshift */
1941 2, /* size (0 = byte, 1 = short, 2 = long) */
1942 64, /* bitsize */
1943 FALSE, /* pc_relative */
1944 0, /* bitpos */
1945 complain_overflow_bitfield, /* complain_on_overflow */
1946 bfd_elf_generic_reloc, /* special_function */
1947 AARCH64_R_STR (GLOB_DAT), /* name */
1948 TRUE, /* partial_inplace */
1949 0xffffffff, /* src_mask */
1950 0xffffffff, /* dst_mask */
1951 FALSE), /* pcrel_offset */
1952
1953 HOWTO (AARCH64_R (JUMP_SLOT), /* type */
1954 0, /* rightshift */
1955 2, /* size (0 = byte, 1 = short, 2 = long) */
1956 64, /* bitsize */
1957 FALSE, /* pc_relative */
1958 0, /* bitpos */
1959 complain_overflow_bitfield, /* complain_on_overflow */
1960 bfd_elf_generic_reloc, /* special_function */
1961 AARCH64_R_STR (JUMP_SLOT), /* name */
1962 TRUE, /* partial_inplace */
1963 0xffffffff, /* src_mask */
1964 0xffffffff, /* dst_mask */
1965 FALSE), /* pcrel_offset */
1966
1967 HOWTO (AARCH64_R (RELATIVE), /* type */
1968 0, /* rightshift */
1969 2, /* size (0 = byte, 1 = short, 2 = long) */
1970 64, /* bitsize */
1971 FALSE, /* pc_relative */
1972 0, /* bitpos */
1973 complain_overflow_bitfield, /* complain_on_overflow */
1974 bfd_elf_generic_reloc, /* special_function */
1975 AARCH64_R_STR (RELATIVE), /* name */
1976 TRUE, /* partial_inplace */
1977 ALL_ONES, /* src_mask */
1978 ALL_ONES, /* dst_mask */
1979 FALSE), /* pcrel_offset */
1980
1981 HOWTO (AARCH64_R (TLS_DTPMOD), /* type */
1982 0, /* rightshift */
1983 2, /* size (0 = byte, 1 = short, 2 = long) */
1984 64, /* bitsize */
1985 FALSE, /* pc_relative */
1986 0, /* bitpos */
1987 complain_overflow_dont, /* complain_on_overflow */
1988 bfd_elf_generic_reloc, /* special_function */
da0781dc
YZ		 1989#if ARCH_SIZE == 64
1990 AARCH64_R_STR (TLS_DTPMOD64), /* name */
1991#else
a6bb11b2 1992 AARCH64_R_STR (TLS_DTPMOD), /* name */
da0781dc 1993#endif
a6bb11b2
YZ		 1994 FALSE, /* partial_inplace */
1995 0, /* src_mask */
1996 ALL_ONES, /* dst_mask */
1997 FALSE), /* pc_reloffset */
1998
1999 HOWTO (AARCH64_R (TLS_DTPREL), /* type */
2000 0, /* rightshift */
2001 2, /* size (0 = byte, 1 = short, 2 = long) */
2002 64, /* bitsize */
2003 FALSE, /* pc_relative */
2004 0, /* bitpos */
2005 complain_overflow_dont, /* complain_on_overflow */
2006 bfd_elf_generic_reloc, /* special_function */
da0781dc
YZ		 2007#if ARCH_SIZE == 64
2008 AARCH64_R_STR (TLS_DTPREL64), /* name */
2009#else
a6bb11b2 2010 AARCH64_R_STR (TLS_DTPREL), /* name */
da0781dc 2011#endif
a6bb11b2
YZ		 2012 FALSE, /* partial_inplace */
2013 0, /* src_mask */
2014 ALL_ONES, /* dst_mask */
2015 FALSE), /* pcrel_offset */
2016
2017 HOWTO (AARCH64_R (TLS_TPREL), /* type */
2018 0, /* rightshift */
2019 2, /* size (0 = byte, 1 = short, 2 = long) */
2020 64, /* bitsize */
2021 FALSE, /* pc_relative */
2022 0, /* bitpos */
2023 complain_overflow_dont, /* complain_on_overflow */
2024 bfd_elf_generic_reloc, /* special_function */
da0781dc
YZ		 2025#if ARCH_SIZE == 64
2026 AARCH64_R_STR (TLS_TPREL64), /* name */
2027#else
a6bb11b2 2028 AARCH64_R_STR (TLS_TPREL), /* name */
da0781dc 2029#endif
a6bb11b2
YZ		 2030 FALSE, /* partial_inplace */
2031 0, /* src_mask */
2032 ALL_ONES, /* dst_mask */
2033 FALSE), /* pcrel_offset */
2034
2035 HOWTO (AARCH64_R (TLSDESC), /* type */
2036 0, /* rightshift */
2037 2, /* size (0 = byte, 1 = short, 2 = long) */
2038 64, /* bitsize */
2039 FALSE, /* pc_relative */
2040 0, /* bitpos */
2041 complain_overflow_dont, /* complain_on_overflow */
2042 bfd_elf_generic_reloc, /* special_function */
2043 AARCH64_R_STR (TLSDESC), /* name */
2044 FALSE, /* partial_inplace */
2045 0, /* src_mask */
2046 ALL_ONES, /* dst_mask */
2047 FALSE), /* pcrel_offset */
2048
2049 HOWTO (AARCH64_R (IRELATIVE), /* type */
2050 0, /* rightshift */
2051 2, /* size (0 = byte, 1 = short, 2 = long) */
2052 64, /* bitsize */
2053 FALSE, /* pc_relative */
2054 0, /* bitpos */
2055 complain_overflow_bitfield, /* complain_on_overflow */
2056 bfd_elf_generic_reloc, /* special_function */
2057 AARCH64_R_STR (IRELATIVE), /* name */
2058 FALSE, /* partial_inplace */
2059 0, /* src_mask */
2060 ALL_ONES, /* dst_mask */
2061 FALSE), /* pcrel_offset */
2062
2063 EMPTY_HOWTO (0),
a06ea964
NC		 2064};
2065
a6bb11b2
YZ		 2066static reloc_howto_type elfNN_aarch64_howto_none =
2067 HOWTO (R_AARCH64_NONE, /* type */
2068 0, /* rightshift */
6346d5ca 2069 3, /* size (0 = byte, 1 = short, 2 = long) */
a6bb11b2
YZ		 2070 0, /* bitsize */
2071 FALSE, /* pc_relative */
2072 0, /* bitpos */
2073 complain_overflow_dont,/* complain_on_overflow */
2074 bfd_elf_generic_reloc, /* special_function */
2075 "R_AARCH64_NONE", /* name */
2076 FALSE, /* partial_inplace */
2077 0, /* src_mask */
2078 0, /* dst_mask */
2079 FALSE); /* pcrel_offset */
2080
2081/* Given HOWTO, return the bfd internal relocation enumerator. */
2082
2083static bfd_reloc_code_real_type
2084elfNN_aarch64_bfd_reloc_from_howto (reloc_howto_type *howto)
2085{
2086 const int size
2087 = (int) ARRAY_SIZE (elfNN_aarch64_howto_table);
2088 const ptrdiff_t offset
2089 = howto - elfNN_aarch64_howto_table;
2090
2091 if (offset > 0 && offset < size - 1)
2092 return BFD_RELOC_AARCH64_RELOC_START + offset;
2093
2094 if (howto == &elfNN_aarch64_howto_none)
2095 return BFD_RELOC_AARCH64_NONE;
2096
2097 return BFD_RELOC_AARCH64_RELOC_START;
2098}
2099
2100/* Given R_TYPE, return the bfd internal relocation enumerator. */
2101
2102static bfd_reloc_code_real_type
0aa13fee 2103elfNN_aarch64_bfd_reloc_from_type (bfd *abfd, unsigned int r_type)
a6bb11b2
YZ		 2104{
2105 static bfd_boolean initialized_p = FALSE;
2106 /* Indexed by R_TYPE, values are offsets in the howto_table. */
2107 static unsigned int offsets[R_AARCH64_end];
2108
535b785f 2109 if (!initialized_p)
a6bb11b2
YZ		 2110 {
2111 unsigned int i;
2112
2113 for (i = 1; i < ARRAY_SIZE (elfNN_aarch64_howto_table) - 1; ++i)
2114 if (elfNN_aarch64_howto_table[i].type != 0)
2115 offsets[elfNN_aarch64_howto_table[i].type] = i;
2116
2117 initialized_p = TRUE;
2118 }
2119
2120 if (r_type == R_AARCH64_NONE || r_type == R_AARCH64_NULL)
2121 return BFD_RELOC_AARCH64_NONE;
2122
5860e3f8
NC		 2123 /* PR 17512: file: b371e70a. */
2124 if (r_type >= R_AARCH64_end)
2125 {
0aa13fee
AM		 2126 _bfd_error_handler (_("%pB: unsupported relocation type %#x"),
2127 abfd, r_type);
5860e3f8
NC		 2128 bfd_set_error (bfd_error_bad_value);
2129 return BFD_RELOC_AARCH64_NONE;
2130 }
2131
a6bb11b2
YZ		 2132 return BFD_RELOC_AARCH64_RELOC_START + offsets[r_type];
2133}
2134
2135struct elf_aarch64_reloc_map
2136{
2137 bfd_reloc_code_real_type from;
2138 bfd_reloc_code_real_type to;
2139};
2140
2141/* Map bfd generic reloc to AArch64-specific reloc. */
2142static const struct elf_aarch64_reloc_map elf_aarch64_reloc_map[] =
2143{
2144 {BFD_RELOC_NONE, BFD_RELOC_AARCH64_NONE},
2145
2146 /* Basic data relocations. */
2147 {BFD_RELOC_CTOR, BFD_RELOC_AARCH64_NN},
2148 {BFD_RELOC_64, BFD_RELOC_AARCH64_64},
2149 {BFD_RELOC_32, BFD_RELOC_AARCH64_32},
2150 {BFD_RELOC_16, BFD_RELOC_AARCH64_16},
2151 {BFD_RELOC_64_PCREL, BFD_RELOC_AARCH64_64_PCREL},
2152 {BFD_RELOC_32_PCREL, BFD_RELOC_AARCH64_32_PCREL},
2153 {BFD_RELOC_16_PCREL, BFD_RELOC_AARCH64_16_PCREL},
2154};
2155
2156/* Given the bfd internal relocation enumerator in CODE, return the
2157 corresponding howto entry. */
2158
2159static reloc_howto_type *
2160elfNN_aarch64_howto_from_bfd_reloc (bfd_reloc_code_real_type code)
2161{
2162 unsigned int i;
2163
2164 /* Convert bfd generic reloc to AArch64-specific reloc. */
2165 if (code < BFD_RELOC_AARCH64_RELOC_START
2166 || code > BFD_RELOC_AARCH64_RELOC_END)
2167 for (i = 0; i < ARRAY_SIZE (elf_aarch64_reloc_map); i++)
2168 if (elf_aarch64_reloc_map[i].from == code)
2169 {
2170 code = elf_aarch64_reloc_map[i].to;
2171 break;
2172 }
2173
2174 if (code > BFD_RELOC_AARCH64_RELOC_START
2175 && code < BFD_RELOC_AARCH64_RELOC_END)
2176 if (elfNN_aarch64_howto_table[code - BFD_RELOC_AARCH64_RELOC_START].type)
2177 return &elfNN_aarch64_howto_table[code - BFD_RELOC_AARCH64_RELOC_START];
2178
54757ed1
AP		 2179 if (code == BFD_RELOC_AARCH64_NONE)
2180 return &elfNN_aarch64_howto_none;
2181
a6bb11b2
YZ		 2182 return NULL;
2183}
2184
a06ea964 2185static reloc_howto_type *
0aa13fee 2186elfNN_aarch64_howto_from_type (bfd *abfd, unsigned int r_type)
a06ea964 2187{
a6bb11b2
YZ		 2188 bfd_reloc_code_real_type val;
2189 reloc_howto_type *howto;
2190
cec5225b
YZ		 2191#if ARCH_SIZE == 32
2192 if (r_type > 256)
2193 {
2194 bfd_set_error (bfd_error_bad_value);
2195 return NULL;
2196 }
2197#endif
2198
a6bb11b2
YZ		 2199 if (r_type == R_AARCH64_NONE)
2200 return &elfNN_aarch64_howto_none;
a06ea964 2201
0aa13fee 2202 val = elfNN_aarch64_bfd_reloc_from_type (abfd, r_type);
a6bb11b2 2203 howto = elfNN_aarch64_howto_from_bfd_reloc (val);
a06ea964 2204
a6bb11b2
YZ		 2205 if (howto != NULL)
2206 return howto;
a06ea964 2207
a06ea964
NC		 2208 bfd_set_error (bfd_error_bad_value);
2209 return NULL;
2210}
2211
f3185997 2212static bfd_boolean
0aa13fee 2213elfNN_aarch64_info_to_howto (bfd *abfd, arelent *bfd_reloc,
a06ea964
NC		 2214 Elf_Internal_Rela *elf_reloc)
2215{
2216 unsigned int r_type;
2217
cec5225b 2218 r_type = ELFNN_R_TYPE (elf_reloc->r_info);
0aa13fee 2219 bfd_reloc->howto = elfNN_aarch64_howto_from_type (abfd, r_type);
f3185997
NC		 2220
2221 if (bfd_reloc->howto == NULL)
2222 {
2223 /* xgettext:c-format */
2224 _bfd_error_handler (_("%pB: unsupported relocation type %#x"), abfd, r_type);
2225 return FALSE;
2226 }
2227 return TRUE;
a06ea964
NC		 2228}
2229
a06ea964 2230static reloc_howto_type *
cec5225b 2231elfNN_aarch64_reloc_type_lookup (bfd *abfd ATTRIBUTE_UNUSED,
a06ea964
NC		 2232 bfd_reloc_code_real_type code)
2233{
a6bb11b2 2234 reloc_howto_type *howto = elfNN_aarch64_howto_from_bfd_reloc (code);
a06ea964 2235
a6bb11b2
YZ		 2236 if (howto != NULL)
2237 return howto;
a06ea964
NC		 2238
2239 bfd_set_error (bfd_error_bad_value);
2240 return NULL;
2241}
2242
2243static reloc_howto_type *
cec5225b 2244elfNN_aarch64_reloc_name_lookup (bfd *abfd ATTRIBUTE_UNUSED,
a06ea964
NC		 2245 const char *r_name)
2246{
2247 unsigned int i;
2248
a6bb11b2
YZ		 2249 for (i = 1; i < ARRAY_SIZE (elfNN_aarch64_howto_table) - 1; ++i)
2250 if (elfNN_aarch64_howto_table[i].name != NULL
2251 && strcasecmp (elfNN_aarch64_howto_table[i].name, r_name) == 0)
2252 return &elfNN_aarch64_howto_table[i];
a06ea964
NC		 2253
2254 return NULL;
2255}
2256
07d6d2b8
AM		 2257#define TARGET_LITTLE_SYM aarch64_elfNN_le_vec
2258#define TARGET_LITTLE_NAME "elfNN-littleaarch64"
2259#define TARGET_BIG_SYM aarch64_elfNN_be_vec
2260#define TARGET_BIG_NAME "elfNN-bigaarch64"
a06ea964 2261
a06ea964
NC		 2262/* The linker script knows the section names for placement.
2263 The entry_names are used to do simple name mangling on the stubs.
2264 Given a function name, and its type, the stub can be found. The
2265 name can be changed. The only requirement is the %s be present. */
2266#define STUB_ENTRY_NAME "__%s_veneer"
2267
2268/* The name of the dynamic interpreter. This is put in the .interp
2269 section. */
2270#define ELF_DYNAMIC_INTERPRETER "/lib/ld.so.1"
2271
2272#define AARCH64_MAX_FWD_BRANCH_OFFSET \
2273 (((1 << 25) - 1) << 2)
2274#define AARCH64_MAX_BWD_BRANCH_OFFSET \
2275 (-((1 << 25) << 2))
2276
2277#define AARCH64_MAX_ADRP_IMM ((1 << 20) - 1)
2278#define AARCH64_MIN_ADRP_IMM (-(1 << 20))
2279
2280static int
2281aarch64_valid_for_adrp_p (bfd_vma value, bfd_vma place)
2282{
2283 bfd_signed_vma offset = (bfd_signed_vma) (PG (value) - PG (place)) >> 12;
2284 return offset <= AARCH64_MAX_ADRP_IMM && offset >= AARCH64_MIN_ADRP_IMM;
2285}
2286
2287static int
2288aarch64_valid_branch_p (bfd_vma value, bfd_vma place)
2289{
2290 bfd_signed_vma offset = (bfd_signed_vma) (value - place);
2291 return (offset <= AARCH64_MAX_FWD_BRANCH_OFFSET
2292 && offset >= AARCH64_MAX_BWD_BRANCH_OFFSET);
2293}
2294
2295static const uint32_t aarch64_adrp_branch_stub [] =
2296{
2297 0x90000010, /* adrp ip0, X */
2298 /* R_AARCH64_ADR_HI21_PCREL(X) */
2299 0x91000210, /* add ip0, ip0, :lo12:X */
2300 /* R_AARCH64_ADD_ABS_LO12_NC(X) */
2301 0xd61f0200, /* br ip0 */
2302};
2303
2304static const uint32_t aarch64_long_branch_stub[] =
2305{
cec5225b 2306#if ARCH_SIZE == 64
a06ea964 2307 0x58000090, /* ldr ip0, 1f */
cec5225b
YZ		 2308#else
2309 0x18000090, /* ldr wip0, 1f */
2310#endif
a06ea964
NC		 2311 0x10000011, /* adr ip1, #0 */
2312 0x8b110210, /* add ip0, ip0, ip1 */
2313 0xd61f0200, /* br ip0 */
cec5225b
YZ		 2314 0x00000000, /* 1: .xword or .word
2315 R_AARCH64_PRELNN(X) + 12
a06ea964
NC		 2316 */
2317 0x00000000,
2318};
2319
68fcca92
JW		 2320static const uint32_t aarch64_erratum_835769_stub[] =
2321{
2322 0x00000000, /* Placeholder for multiply accumulate. */
2323 0x14000000, /* b <label> */
2324};
2325
4106101c
MS		 2326static const uint32_t aarch64_erratum_843419_stub[] =
2327{
2328 0x00000000, /* Placeholder for LDR instruction. */
2329 0x14000000, /* b <label> */
2330};
2331
a06ea964
NC		 2332/* Section name for stubs is the associated section name plus this
2333 string. */
2334#define STUB_SUFFIX ".stub"
2335
cec5225b 2336enum elf_aarch64_stub_type
a06ea964
NC		 2337{
2338 aarch64_stub_none,
2339 aarch64_stub_adrp_branch,
2340 aarch64_stub_long_branch,
68fcca92 2341 aarch64_stub_erratum_835769_veneer,
4106101c 2342 aarch64_stub_erratum_843419_veneer,
a06ea964
NC		 2343};
2344
cec5225b 2345struct elf_aarch64_stub_hash_entry
a06ea964
NC		 2346{
2347 /* Base hash table entry structure. */
2348 struct bfd_hash_entry root;
2349
2350 /* The stub section. */
2351 asection *stub_sec;
2352
2353 /* Offset within stub_sec of the beginning of this stub. */
2354 bfd_vma stub_offset;
2355
2356 /* Given the symbol's value and its section we can determine its final
2357 value when building the stubs (so the stub knows where to jump). */
2358 bfd_vma target_value;
2359 asection *target_section;
2360
cec5225b 2361 enum elf_aarch64_stub_type stub_type;
a06ea964
NC		 2362
2363 /* The symbol table entry, if any, that this was derived from. */
cec5225b 2364 struct elf_aarch64_link_hash_entry *h;
a06ea964
NC		 2365
2366 /* Destination symbol type */
2367 unsigned char st_type;
2368
2369 /* Where this stub is being called from, or, in the case of combined
2370 stub sections, the first input section in the group. */
2371 asection *id_sec;
2372
2373 /* The name for the local symbol at the start of this stub. The
2374 stub name in the hash table has to be unique; this does not, so
2375 it can be friendlier. */
2376 char *output_name;
68fcca92
JW		 2377
2378 /* The instruction which caused this stub to be generated (only valid for
2379 erratum 835769 workaround stubs at present). */
2380 uint32_t veneered_insn;
4106101c
MS		 2381
2382 /* In an erratum 843419 workaround stub, the ADRP instruction offset. */
2383 bfd_vma adrp_offset;
a06ea964
NC		 2384};
2385
2386/* Used to build a map of a section. This is required for mixed-endian
2387 code/data. */
2388
cec5225b 2389typedef struct elf_elf_section_map
a06ea964
NC		 2390{
2391 bfd_vma vma;
2392 char type;
2393}
cec5225b 2394elf_aarch64_section_map;
a06ea964
NC		 2395
2396
2397typedef struct _aarch64_elf_section_data
2398{
2399 struct bfd_elf_section_data elf;
2400 unsigned int mapcount;
2401 unsigned int mapsize;
cec5225b 2402 elf_aarch64_section_map *map;
a06ea964
NC		 2403}
2404_aarch64_elf_section_data;
2405
cec5225b 2406#define elf_aarch64_section_data(sec) \
a06ea964
NC		 2407 ((_aarch64_elf_section_data *) elf_section_data (sec))
2408
4e8516b2
AP		 2409/* The size of the thread control block which is defined to be two pointers. */
2410#define TCB_SIZE (ARCH_SIZE/8)*2
a06ea964
NC		 2411
2412struct elf_aarch64_local_symbol
2413{
2414 unsigned int got_type;
2415 bfd_signed_vma got_refcount;
2416 bfd_vma got_offset;
2417
2418 /* Offset of the GOTPLT entry reserved for the TLS descriptor. The
2419 offset is from the end of the jump table and reserved entries
2420 within the PLTGOT.
2421
2422 The magic value (bfd_vma) -1 indicates that an offset has not be
2423 allocated. */
2424 bfd_vma tlsdesc_got_jump_table_offset;
2425};
2426
2427struct elf_aarch64_obj_tdata
2428{
2429 struct elf_obj_tdata root;
2430
2431 /* local symbol descriptors */
2432 struct elf_aarch64_local_symbol *locals;
2433
2434 /* Zero to warn when linking objects with incompatible enum sizes. */
2435 int no_enum_size_warning;
2436
2437 /* Zero to warn when linking objects with incompatible wchar_t sizes. */
2438 int no_wchar_size_warning;
2439};
2440
2441#define elf_aarch64_tdata(bfd) \
2442 ((struct elf_aarch64_obj_tdata *) (bfd)->tdata.any)
2443
cec5225b 2444#define elf_aarch64_locals(bfd) (elf_aarch64_tdata (bfd)->locals)
a06ea964
NC		 2445
2446#define is_aarch64_elf(bfd) \
2447 (bfd_get_flavour (bfd) == bfd_target_elf_flavour \
2448 && elf_tdata (bfd) != NULL \
2449 && elf_object_id (bfd) == AARCH64_ELF_DATA)
2450
2451static bfd_boolean
cec5225b 2452elfNN_aarch64_mkobject (bfd *abfd)
a06ea964
NC		 2453{
2454 return bfd_elf_allocate_object (abfd, sizeof (struct elf_aarch64_obj_tdata),
2455 AARCH64_ELF_DATA);
2456}
2457
cec5225b
YZ		 2458#define elf_aarch64_hash_entry(ent) \
2459 ((struct elf_aarch64_link_hash_entry *)(ent))
a06ea964
NC		 2460
2461#define GOT_UNKNOWN 0
2462#define GOT_NORMAL 1
2463#define GOT_TLS_GD 2
2464#define GOT_TLS_IE 4
2465#define GOT_TLSDESC_GD 8
2466
2467#define GOT_TLS_GD_ANY_P(type) ((type & GOT_TLS_GD) || (type & GOT_TLSDESC_GD))
2468
2469/* AArch64 ELF linker hash entry. */
cec5225b 2470struct elf_aarch64_link_hash_entry
a06ea964
NC		 2471{
2472 struct elf_link_hash_entry root;
2473
2474 /* Track dynamic relocs copied for this symbol. */
2475 struct elf_dyn_relocs *dyn_relocs;
2476
a06ea964
NC		 2477 /* Since PLT entries have variable size, we need to record the
2478 index into .got.plt instead of recomputing it from the PLT
2479 offset. */
2480 bfd_signed_vma plt_got_offset;
2481
2482 /* Bit mask representing the type of GOT entry(s) if any required by
2483 this symbol. */
2484 unsigned int got_type;
2485
2486 /* A pointer to the most recently used stub hash entry against this
2487 symbol. */
cec5225b 2488 struct elf_aarch64_stub_hash_entry *stub_cache;
a06ea964
NC		 2489
2490 /* Offset of the GOTPLT entry reserved for the TLS descriptor. The offset
2491 is from the end of the jump table and reserved entries within the PLTGOT.
2492
2493 The magic value (bfd_vma) -1 indicates that an offset has not
2494 be allocated. */
2495 bfd_vma tlsdesc_got_jump_table_offset;
2496};
2497
2498static unsigned int
cec5225b 2499elfNN_aarch64_symbol_got_type (struct elf_link_hash_entry *h,
a06ea964
NC		 2500 bfd *abfd,
2501 unsigned long r_symndx)
2502{
2503 if (h)
cec5225b 2504 return elf_aarch64_hash_entry (h)->got_type;
a06ea964 2505
cec5225b 2506 if (! elf_aarch64_locals (abfd))
a06ea964
NC		 2507 return GOT_UNKNOWN;
2508
cec5225b 2509 return elf_aarch64_locals (abfd)[r_symndx].got_type;
a06ea964
NC		 2510}
2511
a06ea964 2512/* Get the AArch64 elf linker hash table from a link_info structure. */
cec5225b
YZ		 2513#define elf_aarch64_hash_table(info) \
2514 ((struct elf_aarch64_link_hash_table *) ((info)->hash))
a06ea964
NC		 2515
2516#define aarch64_stub_hash_lookup(table, string, create, copy) \
cec5225b 2517 ((struct elf_aarch64_stub_hash_entry *) \
a06ea964
NC		 2518 bfd_hash_lookup ((table), (string), (create), (copy)))
2519
2520/* AArch64 ELF linker hash table. */
cec5225b 2521struct elf_aarch64_link_hash_table
a06ea964
NC		 2522{
2523 /* The main hash table. */
2524 struct elf_link_hash_table root;
2525
2526 /* Nonzero to force PIC branch veneers. */
2527 int pic_veneer;
2528
68fcca92
JW		 2529 /* Fix erratum 835769. */
2530 int fix_erratum_835769;
2531
4106101c
MS		 2532 /* Fix erratum 843419. */
2533 int fix_erratum_843419;
2534
2535 /* Enable ADRP->ADR rewrite for erratum 843419 workaround. */
2536 int fix_erratum_843419_adr;
2537
1f56df9d
JW		 2538 /* Don't apply link-time values for dynamic relocations. */
2539 int no_apply_dynamic_relocs;
2540
a06ea964
NC		 2541 /* The number of bytes in the initial entry in the PLT. */
2542 bfd_size_type plt_header_size;
2543
2544 /* The number of bytes in the subsequent PLT etries. */
2545 bfd_size_type plt_entry_size;
2546
a06ea964
NC		 2547 /* Small local sym cache. */
2548 struct sym_cache sym_cache;
2549
2550 /* For convenience in allocate_dynrelocs. */
2551 bfd *obfd;
2552
2553 /* The amount of space used by the reserved portion of the sgotplt
2554 section, plus whatever space is used by the jump slots. */
2555 bfd_vma sgotplt_jump_table_size;
2556
2557 /* The stub hash table. */
2558 struct bfd_hash_table stub_hash_table;
2559
2560 /* Linker stub bfd. */
2561 bfd *stub_bfd;
2562
2563 /* Linker call-backs. */
2564 asection *(*add_stub_section) (const char *, asection *);
2565 void (*layout_sections_again) (void);
2566
2567 /* Array to keep track of which stub sections have been created, and
2568 information on stub grouping. */
2569 struct map_stub
2570 {
2571 /* This is the section to which stubs in the group will be
2572 attached. */
2573 asection *link_sec;
2574 /* The stub section. */
2575 asection *stub_sec;
2576 } *stub_group;
2577
cec5225b 2578 /* Assorted information used by elfNN_aarch64_size_stubs. */
a06ea964 2579 unsigned int bfd_count;
7292b3ac 2580 unsigned int top_index;
a06ea964
NC		 2581 asection **input_list;
2582
2583 /* The offset into splt of the PLT entry for the TLS descriptor
2584 resolver. Special values are 0, if not necessary (or not found
2585 to be necessary yet), and -1 if needed but not determined
2586 yet. */
2587 bfd_vma tlsdesc_plt;
2588
2589 /* The GOT offset for the lazy trampoline. Communicated to the
2590 loader via DT_TLSDESC_GOT. The magic value (bfd_vma) -1
2591 indicates an offset is not allocated. */
2592 bfd_vma dt_tlsdesc_got;
1419bbe5
WN		 2593
2594 /* Used by local STT_GNU_IFUNC symbols. */
2595 htab_t loc_hash_table;
2596 void * loc_hash_memory;
a06ea964
NC		 2597};
2598
a06ea964
NC		 2599/* Create an entry in an AArch64 ELF linker hash table. */
2600
2601static struct bfd_hash_entry *
cec5225b 2602elfNN_aarch64_link_hash_newfunc (struct bfd_hash_entry *entry,
a06ea964
NC		 2603 struct bfd_hash_table *table,
2604 const char *string)
2605{
cec5225b
YZ		 2606 struct elf_aarch64_link_hash_entry *ret =
2607 (struct elf_aarch64_link_hash_entry *) entry;
a06ea964
NC		 2608
2609 /* Allocate the structure if it has not already been allocated by a
2610 subclass. */
2611 if (ret == NULL)
2612 ret = bfd_hash_allocate (table,
cec5225b 2613 sizeof (struct elf_aarch64_link_hash_entry));
a06ea964
NC		 2614 if (ret == NULL)
2615 return (struct bfd_hash_entry *) ret;
2616
2617 /* Call the allocation method of the superclass. */
cec5225b 2618 ret = ((struct elf_aarch64_link_hash_entry *)
a06ea964
NC		 2619 _bfd_elf_link_hash_newfunc ((struct bfd_hash_entry *) ret,
2620 table, string));
2621 if (ret != NULL)
2622 {
2623 ret->dyn_relocs = NULL;
a06ea964
NC		 2624 ret->got_type = GOT_UNKNOWN;
2625 ret->plt_got_offset = (bfd_vma) - 1;
2626 ret->stub_cache = NULL;
2627 ret->tlsdesc_got_jump_table_offset = (bfd_vma) - 1;
2628 }
2629
2630 return (struct bfd_hash_entry *) ret;
2631}
2632
2633/* Initialize an entry in the stub hash table. */
2634
2635static struct bfd_hash_entry *
2636stub_hash_newfunc (struct bfd_hash_entry *entry,
2637 struct bfd_hash_table *table, const char *string)
2638{
2639 /* Allocate the structure if it has not already been allocated by a
2640 subclass. */
2641 if (entry == NULL)
2642 {
2643 entry = bfd_hash_allocate (table,
2644 sizeof (struct
cec5225b 2645 elf_aarch64_stub_hash_entry));
a06ea964
NC		 2646 if (entry == NULL)
2647 return entry;
2648 }
2649
2650 /* Call the allocation method of the superclass. */
2651 entry = bfd_hash_newfunc (entry, table, string);
2652 if (entry != NULL)
2653 {
cec5225b 2654 struct elf_aarch64_stub_hash_entry *eh;
a06ea964
NC		 2655
2656 /* Initialize the local fields. */
cec5225b 2657 eh = (struct elf_aarch64_stub_hash_entry *) entry;
4106101c 2658 eh->adrp_offset = 0;
a06ea964
NC		 2659 eh->stub_sec = NULL;
2660 eh->stub_offset = 0;
2661 eh->target_value = 0;
2662 eh->target_section = NULL;
2663 eh->stub_type = aarch64_stub_none;
2664 eh->h = NULL;
2665 eh->id_sec = NULL;
2666 }
2667
2668 return entry;
2669}
2670
1419bbe5
WN		 2671/* Compute a hash of a local hash entry. We use elf_link_hash_entry
2672 for local symbol so that we can handle local STT_GNU_IFUNC symbols
2673 as global symbol. We reuse indx and dynstr_index for local symbol
2674 hash since they aren't used by global symbols in this backend. */
2675
2676static hashval_t
2677elfNN_aarch64_local_htab_hash (const void *ptr)
2678{
2679 struct elf_link_hash_entry *h
2680 = (struct elf_link_hash_entry *) ptr;
2681 return ELF_LOCAL_SYMBOL_HASH (h->indx, h->dynstr_index);
2682}
2683
2684/* Compare local hash entries. */
2685
2686static int
2687elfNN_aarch64_local_htab_eq (const void *ptr1, const void *ptr2)
2688{
2689 struct elf_link_hash_entry *h1
2690 = (struct elf_link_hash_entry *) ptr1;
2691 struct elf_link_hash_entry *h2
2692 = (struct elf_link_hash_entry *) ptr2;
2693
2694 return h1->indx == h2->indx && h1->dynstr_index == h2->dynstr_index;
2695}
2696
2697/* Find and/or create a hash entry for local symbol. */
2698
2699static struct elf_link_hash_entry *
2700elfNN_aarch64_get_local_sym_hash (struct elf_aarch64_link_hash_table *htab,
2701 bfd *abfd, const Elf_Internal_Rela *rel,
2702 bfd_boolean create)
2703{
2704 struct elf_aarch64_link_hash_entry e, *ret;
2705 asection *sec = abfd->sections;
2706 hashval_t h = ELF_LOCAL_SYMBOL_HASH (sec->id,
2707 ELFNN_R_SYM (rel->r_info));
2708 void **slot;
2709
2710 e.root.indx = sec->id;
2711 e.root.dynstr_index = ELFNN_R_SYM (rel->r_info);
2712 slot = htab_find_slot_with_hash (htab->loc_hash_table, &e, h,
2713 create ? INSERT : NO_INSERT);
2714
2715 if (!slot)
2716 return NULL;
2717
2718 if (*slot)
2719 {
2720 ret = (struct elf_aarch64_link_hash_entry *) *slot;
2721 return &ret->root;
2722 }
2723
2724 ret = (struct elf_aarch64_link_hash_entry *)
2725 objalloc_alloc ((struct objalloc *) htab->loc_hash_memory,
2726 sizeof (struct elf_aarch64_link_hash_entry));
2727 if (ret)
2728 {
2729 memset (ret, 0, sizeof (*ret));
2730 ret->root.indx = sec->id;
2731 ret->root.dynstr_index = ELFNN_R_SYM (rel->r_info);
2732 ret->root.dynindx = -1;
2733 *slot = ret;
2734 }
2735 return &ret->root;
2736}
a06ea964
NC		 2737
2738/* Copy the extra info we tack onto an elf_link_hash_entry. */
2739
2740static void
cec5225b 2741elfNN_aarch64_copy_indirect_symbol (struct bfd_link_info *info,
a06ea964
NC		 2742 struct elf_link_hash_entry *dir,
2743 struct elf_link_hash_entry *ind)
2744{
cec5225b 2745 struct elf_aarch64_link_hash_entry *edir, *eind;
a06ea964 2746
cec5225b
YZ		 2747 edir = (struct elf_aarch64_link_hash_entry *) dir;
2748 eind = (struct elf_aarch64_link_hash_entry *) ind;
a06ea964
NC		 2749
2750 if (eind->dyn_relocs != NULL)
2751 {
2752 if (edir->dyn_relocs != NULL)
2753 {
2754 struct elf_dyn_relocs **pp;
2755 struct elf_dyn_relocs *p;
2756
2757 /* Add reloc counts against the indirect sym to the direct sym
2758 list. Merge any entries against the same section. */
2759 for (pp = &eind->dyn_relocs; (p = *pp) != NULL;)
2760 {
2761 struct elf_dyn_relocs *q;
2762
2763 for (q = edir->dyn_relocs; q != NULL; q = q->next)
2764 if (q->sec == p->sec)
2765 {
2766 q->pc_count += p->pc_count;
2767 q->count += p->count;
2768 *pp = p->next;
2769 break;
2770 }
2771 if (q == NULL)
2772 pp = &p->next;
2773 }
2774 *pp = edir->dyn_relocs;
2775 }
2776
2777 edir->dyn_relocs = eind->dyn_relocs;
2778 eind->dyn_relocs = NULL;
2779 }
2780
a06ea964
NC		 2781 if (ind->root.type == bfd_link_hash_indirect)
2782 {
2783 /* Copy over PLT info. */
2784 if (dir->got.refcount <= 0)
2785 {
2786 edir->got_type = eind->got_type;
2787 eind->got_type = GOT_UNKNOWN;
2788 }
2789 }
2790
2791 _bfd_elf_link_hash_copy_indirect (info, dir, ind);
2792}
2793
68faa637
AM		 2794/* Destroy an AArch64 elf linker hash table. */
2795
2796static void
d495ab0d 2797elfNN_aarch64_link_hash_table_free (bfd *obfd)
68faa637
AM		 2798{
2799 struct elf_aarch64_link_hash_table *ret
d495ab0d 2800 = (struct elf_aarch64_link_hash_table *) obfd->link.hash;
68faa637
AM		 2801
2802 if (ret->loc_hash_table)
2803 htab_delete (ret->loc_hash_table);
2804 if (ret->loc_hash_memory)
2805 objalloc_free ((struct objalloc *) ret->loc_hash_memory);
2806
2807 bfd_hash_table_free (&ret->stub_hash_table);
d495ab0d 2808 _bfd_elf_link_hash_table_free (obfd);
68faa637
AM		 2809}
2810
a06ea964
NC		 2811/* Create an AArch64 elf linker hash table. */
2812
2813static struct bfd_link_hash_table *
cec5225b 2814elfNN_aarch64_link_hash_table_create (bfd *abfd)
a06ea964 2815{
cec5225b
YZ		 2816 struct elf_aarch64_link_hash_table *ret;
2817 bfd_size_type amt = sizeof (struct elf_aarch64_link_hash_table);
a06ea964 2818
7bf52ea2 2819 ret = bfd_zmalloc (amt);
a06ea964
NC		 2820 if (ret == NULL)
2821 return NULL;
2822
2823 if (!_bfd_elf_link_hash_table_init
cec5225b
YZ		 2824 (&ret->root, abfd, elfNN_aarch64_link_hash_newfunc,
2825 sizeof (struct elf_aarch64_link_hash_entry), AARCH64_ELF_DATA))
a06ea964
NC		 2826 {
2827 free (ret);
2828 return NULL;
2829 }
2830
a06ea964
NC		 2831 ret->plt_header_size = PLT_ENTRY_SIZE;
2832 ret->plt_entry_size = PLT_SMALL_ENTRY_SIZE;
a06ea964 2833 ret->obfd = abfd;
a06ea964
NC		 2834 ret->dt_tlsdesc_got = (bfd_vma) - 1;
2835
2836 if (!bfd_hash_table_init (&ret->stub_hash_table, stub_hash_newfunc,
cec5225b 2837 sizeof (struct elf_aarch64_stub_hash_entry)))
a06ea964 2838 {
d495ab0d 2839 _bfd_elf_link_hash_table_free (abfd);
a06ea964
NC		 2840 return NULL;
2841 }
2842
1419bbe5
WN		 2843 ret->loc_hash_table = htab_try_create (1024,
2844 elfNN_aarch64_local_htab_hash,
2845 elfNN_aarch64_local_htab_eq,
2846 NULL);
2847 ret->loc_hash_memory = objalloc_create ();
2848 if (!ret->loc_hash_table || !ret->loc_hash_memory)
2849 {
d495ab0d 2850 elfNN_aarch64_link_hash_table_free (abfd);
1419bbe5
WN		 2851 return NULL;
2852 }
d495ab0d 2853 ret->root.root.hash_table_free = elfNN_aarch64_link_hash_table_free;
1419bbe5 2854
a06ea964
NC		 2855 return &ret->root.root;
2856}
2857
1d75a8e2
NC		 2858/* Perform relocation R_TYPE. Returns TRUE upon success, FALSE otherwise. */
2859
a06ea964
NC		 2860static bfd_boolean
2861aarch64_relocate (unsigned int r_type, bfd *input_bfd, asection *input_section,
2862 bfd_vma offset, bfd_vma value)
2863{
2864 reloc_howto_type *howto;
2865 bfd_vma place;
2866
0aa13fee 2867 howto = elfNN_aarch64_howto_from_type (input_bfd, r_type);
a06ea964
NC		 2868 place = (input_section->output_section->vma + input_section->output_offset
2869 + offset);
caed7120 2870
0aa13fee 2871 r_type = elfNN_aarch64_bfd_reloc_from_type (input_bfd, r_type);
caed7120
YZ		 2872 value = _bfd_aarch64_elf_resolve_relocation (r_type, place, value, 0, FALSE);
2873 return _bfd_aarch64_elf_put_addend (input_bfd,
2874 input_section->contents + offset, r_type,
1d75a8e2 2875 howto, value) == bfd_reloc_ok;
a06ea964
NC		 2876}
2877
cec5225b 2878static enum elf_aarch64_stub_type
a06ea964
NC		 2879aarch64_select_branch_stub (bfd_vma value, bfd_vma place)
2880{
2881 if (aarch64_valid_for_adrp_p (value, place))
2882 return aarch64_stub_adrp_branch;
2883 return aarch64_stub_long_branch;
2884}
2885
2886/* Determine the type of stub needed, if any, for a call. */
2887
cec5225b 2888static enum elf_aarch64_stub_type
9a228467 2889aarch64_type_of_stub (asection *input_sec,
a06ea964 2890 const Elf_Internal_Rela *rel,
f678ded7 2891 asection *sym_sec,
a06ea964 2892 unsigned char st_type,
a06ea964
NC		 2893 bfd_vma destination)
2894{
2895 bfd_vma location;
2896 bfd_signed_vma branch_offset;
2897 unsigned int r_type;
cec5225b 2898 enum elf_aarch64_stub_type stub_type = aarch64_stub_none;
a06ea964 2899
f678ded7 2900 if (st_type != STT_FUNC
2f340668 2901 && (sym_sec == input_sec))
a06ea964
NC		 2902 return stub_type;
2903
a06ea964
NC		 2904 /* Determine where the call point is. */
2905 location = (input_sec->output_offset
2906 + input_sec->output_section->vma + rel->r_offset);
2907
2908 branch_offset = (bfd_signed_vma) (destination - location);
2909
cec5225b 2910 r_type = ELFNN_R_TYPE (rel->r_info);
a06ea964
NC		 2911
2912 /* We don't want to redirect any old unconditional jump in this way,
2913 only one which is being used for a sibcall, where it is
2914 acceptable for the IP0 and IP1 registers to be clobbered. */
a6bb11b2 2915 if ((r_type == AARCH64_R (CALL26) || r_type == AARCH64_R (JUMP26))
a06ea964
NC		 2916 && (branch_offset > AARCH64_MAX_FWD_BRANCH_OFFSET
2917 || branch_offset < AARCH64_MAX_BWD_BRANCH_OFFSET))
2918 {
2919 stub_type = aarch64_stub_long_branch;
2920 }
2921
2922 return stub_type;
2923}
2924
2925/* Build a name for an entry in the stub hash table. */
2926
2927static char *
cec5225b 2928elfNN_aarch64_stub_name (const asection *input_section,
a06ea964 2929 const asection *sym_sec,
cec5225b 2930 const struct elf_aarch64_link_hash_entry *hash,
a06ea964
NC		 2931 const Elf_Internal_Rela *rel)
2932{
2933 char *stub_name;
2934 bfd_size_type len;
2935
2936 if (hash)
2937 {
2938 len = 8 + 1 + strlen (hash->root.root.root.string) + 1 + 16 + 1;
2939 stub_name = bfd_malloc (len);
2940 if (stub_name != NULL)
2941 snprintf (stub_name, len, "%08x_%s+%" BFD_VMA_FMT "x",
2942 (unsigned int) input_section->id,
2943 hash->root.root.root.string,
2944 rel->r_addend);
2945 }
2946 else
2947 {
2948 len = 8 + 1 + 8 + 1 + 8 + 1 + 16 + 1;
2949 stub_name = bfd_malloc (len);
2950 if (stub_name != NULL)
2951 snprintf (stub_name, len, "%08x_%x:%x+%" BFD_VMA_FMT "x",
2952 (unsigned int) input_section->id,
2953 (unsigned int) sym_sec->id,
cec5225b 2954 (unsigned int) ELFNN_R_SYM (rel->r_info),
a06ea964
NC		 2955 rel->r_addend);
2956 }
2957
2958 return stub_name;
2959}
2960
7f784814
JW		 2961/* Return TRUE if symbol H should be hashed in the `.gnu.hash' section. For
2962 executable PLT slots where the executable never takes the address of those
2963 functions, the function symbols are not added to the hash table. */
2964
2965static bfd_boolean
2966elf_aarch64_hash_symbol (struct elf_link_hash_entry *h)
2967{
2968 if (h->plt.offset != (bfd_vma) -1
2969 && !h->def_regular
2970 && !h->pointer_equality_needed)
2971 return FALSE;
2972
2973 return _bfd_elf_hash_symbol (h);
2974}
2975
2976
a06ea964
NC		 2977/* Look up an entry in the stub hash. Stub entries are cached because
2978 creating the stub name takes a bit of time. */
2979
cec5225b
YZ		 2980static struct elf_aarch64_stub_hash_entry *
2981elfNN_aarch64_get_stub_entry (const asection *input_section,
a06ea964
NC		 2982 const asection *sym_sec,
2983 struct elf_link_hash_entry *hash,
2984 const Elf_Internal_Rela *rel,
cec5225b 2985 struct elf_aarch64_link_hash_table *htab)
a06ea964 2986{
cec5225b
YZ		 2987 struct elf_aarch64_stub_hash_entry *stub_entry;
2988 struct elf_aarch64_link_hash_entry *h =
2989 (struct elf_aarch64_link_hash_entry *) hash;
a06ea964
NC		 2990 const asection *id_sec;
2991
2992 if ((input_section->flags & SEC_CODE) == 0)
2993 return NULL;
2994
2995 /* If this input section is part of a group of sections sharing one
2996 stub section, then use the id of the first section in the group.
2997 Stub names need to include a section id, as there may well be
2998 more than one stub used to reach say, printf, and we need to
2999 distinguish between them. */
3000 id_sec = htab->stub_group[input_section->id].link_sec;
3001
3002 if (h != NULL && h->stub_cache != NULL
3003 && h->stub_cache->h == h && h->stub_cache->id_sec == id_sec)
3004 {
3005 stub_entry = h->stub_cache;
3006 }
3007 else
3008 {
3009 char *stub_name;
3010
cec5225b 3011 stub_name = elfNN_aarch64_stub_name (id_sec, sym_sec, h, rel);
a06ea964
NC		 3012 if (stub_name == NULL)
3013 return NULL;
3014
3015 stub_entry = aarch64_stub_hash_lookup (&htab->stub_hash_table,
3016 stub_name, FALSE, FALSE);
3017 if (h != NULL)
3018 h->stub_cache = stub_entry;
3019
3020 free (stub_name);
3021 }
3022
3023 return stub_entry;
3024}
3025
a06ea964 3026
66585675
MS		 3027/* Create a stub section. */
3028
3029static asection *
3030_bfd_aarch64_create_stub_section (asection *section,
3031 struct elf_aarch64_link_hash_table *htab)
3032{
3033 size_t namelen;
3034 bfd_size_type len;
3035 char *s_name;
3036
3037 namelen = strlen (section->name);
3038 len = namelen + sizeof (STUB_SUFFIX);
3039 s_name = bfd_alloc (htab->stub_bfd, len);
3040 if (s_name == NULL)
3041 return NULL;
3042
3043 memcpy (s_name, section->name, namelen);
3044 memcpy (s_name + namelen, STUB_SUFFIX, sizeof (STUB_SUFFIX));
3045 return (*htab->add_stub_section) (s_name, section);
3046}
3047
3048
fc6d53be
MS		 3049/* Find or create a stub section for a link section.
3050
3051 Fix or create the stub section used to collect stubs attached to
3052 the specified link section. */
3053
3054static asection *
3055_bfd_aarch64_get_stub_for_link_section (asection *link_section,
3056 struct elf_aarch64_link_hash_table *htab)
3057{
3058 if (htab->stub_group[link_section->id].stub_sec == NULL)
3059 htab->stub_group[link_section->id].stub_sec
3060 = _bfd_aarch64_create_stub_section (link_section, htab);
3061 return htab->stub_group[link_section->id].stub_sec;
3062}
3063
3064
ef857521
MS		 3065/* Find or create a stub section in the stub group for an input
3066 section. */
3067
3068static asection *
3069_bfd_aarch64_create_or_find_stub_sec (asection *section,
3070 struct elf_aarch64_link_hash_table *htab)
a06ea964 3071{
fc6d53be
MS		 3072 asection *link_sec = htab->stub_group[section->id].link_sec;
3073 return _bfd_aarch64_get_stub_for_link_section (link_sec, htab);
ef857521
MS		 3074}
3075
3076
3077/* Add a new stub entry in the stub group associated with an input
3078 section to the stub hash. Not all fields of the new stub entry are
3079 initialised. */
3080
3081static struct elf_aarch64_stub_hash_entry *
3082_bfd_aarch64_add_stub_entry_in_group (const char *stub_name,
3083 asection *section,
3084 struct elf_aarch64_link_hash_table *htab)
3085{
3086 asection *link_sec;
3087 asection *stub_sec;
3088 struct elf_aarch64_stub_hash_entry *stub_entry;
3089
3090 link_sec = htab->stub_group[section->id].link_sec;
3091 stub_sec = _bfd_aarch64_create_or_find_stub_sec (section, htab);
3092
a06ea964
NC		 3093 /* Enter this entry into the linker stub hash table. */
3094 stub_entry = aarch64_stub_hash_lookup (&htab->stub_hash_table, stub_name,
3095 TRUE, FALSE);
3096 if (stub_entry == NULL)
3097 {
695344c0 3098 /* xgettext:c-format */
871b3ab2 3099 _bfd_error_handler (_("%pB: cannot create stub entry %s"),
4eca0228 3100 section->owner, stub_name);
a06ea964
NC		 3101 return NULL;
3102 }
3103
3104 stub_entry->stub_sec = stub_sec;
3105 stub_entry->stub_offset = 0;
3106 stub_entry->id_sec = link_sec;
3107
3108 return stub_entry;
3109}
3110
4106101c
MS		 3111/* Add a new stub entry in the final stub section to the stub hash.
3112 Not all fields of the new stub entry are initialised. */
3113
3114static struct elf_aarch64_stub_hash_entry *
3115_bfd_aarch64_add_stub_entry_after (const char *stub_name,
3116 asection *link_section,
3117 struct elf_aarch64_link_hash_table *htab)
3118{
3119 asection *stub_sec;
3120 struct elf_aarch64_stub_hash_entry *stub_entry;
3121
3122 stub_sec = _bfd_aarch64_get_stub_for_link_section (link_section, htab);
3123 stub_entry = aarch64_stub_hash_lookup (&htab->stub_hash_table, stub_name,
3124 TRUE, FALSE);
3125 if (stub_entry == NULL)
3126 {
4eca0228 3127 _bfd_error_handler (_("cannot create stub entry %s"), stub_name);
4106101c
MS		 3128 return NULL;
3129 }
3130
3131 stub_entry->stub_sec = stub_sec;
3132 stub_entry->stub_offset = 0;
3133 stub_entry->id_sec = link_section;
3134
3135 return stub_entry;
3136}
3137
3138
a06ea964
NC		 3139static bfd_boolean
3140aarch64_build_one_stub (struct bfd_hash_entry *gen_entry,
3141 void *in_arg ATTRIBUTE_UNUSED)
3142{
cec5225b 3143 struct elf_aarch64_stub_hash_entry *stub_entry;
a06ea964
NC		 3144 asection *stub_sec;
3145 bfd *stub_bfd;
3146 bfd_byte *loc;
3147 bfd_vma sym_value;
68fcca92
JW		 3148 bfd_vma veneered_insn_loc;
3149 bfd_vma veneer_entry_loc;
3150 bfd_signed_vma branch_offset = 0;
a06ea964
NC		 3151 unsigned int template_size;
3152 const uint32_t *template;
3153 unsigned int i;
3154
3155 /* Massage our args to the form they really have. */
cec5225b 3156 stub_entry = (struct elf_aarch64_stub_hash_entry *) gen_entry;
a06ea964
NC		 3157
3158 stub_sec = stub_entry->stub_sec;
3159
3160 /* Make a note of the offset within the stubs for this entry. */
3161 stub_entry->stub_offset = stub_sec->size;
3162 loc = stub_sec->contents + stub_entry->stub_offset;
3163
3164 stub_bfd = stub_sec->owner;
3165
3166 /* This is the address of the stub destination. */
3167 sym_value = (stub_entry->target_value
3168 + stub_entry->target_section->output_offset
3169 + stub_entry->target_section->output_section->vma);
3170
3171 if (stub_entry->stub_type == aarch64_stub_long_branch)
3172 {
3173 bfd_vma place = (stub_entry->stub_offset + stub_sec->output_section->vma
3174 + stub_sec->output_offset);
3175
3176 /* See if we can relax the stub. */
3177 if (aarch64_valid_for_adrp_p (sym_value, place))
3178 stub_entry->stub_type = aarch64_select_branch_stub (sym_value, place);
3179 }
3180
3181 switch (stub_entry->stub_type)
3182 {
3183 case aarch64_stub_adrp_branch:
3184 template = aarch64_adrp_branch_stub;
3185 template_size = sizeof (aarch64_adrp_branch_stub);
3186 break;
3187 case aarch64_stub_long_branch:
3188 template = aarch64_long_branch_stub;
3189 template_size = sizeof (aarch64_long_branch_stub);
3190 break;
68fcca92
JW		 3191 case aarch64_stub_erratum_835769_veneer:
3192 template = aarch64_erratum_835769_stub;
3193 template_size = sizeof (aarch64_erratum_835769_stub);
3194 break;
4106101c
MS		 3195 case aarch64_stub_erratum_843419_veneer:
3196 template = aarch64_erratum_843419_stub;
3197 template_size = sizeof (aarch64_erratum_843419_stub);
3198 break;
a06ea964 3199 default:
8e2fe09f 3200 abort ();
a06ea964
NC		 3201 }
3202
3203 for (i = 0; i < (template_size / sizeof template[0]); i++)
3204 {
3205 bfd_putl32 (template[i], loc);
3206 loc += 4;
3207 }
3208
3209 template_size = (template_size + 7) & ~7;
3210 stub_sec->size += template_size;
3211
3212 switch (stub_entry->stub_type)
3213 {
3214 case aarch64_stub_adrp_branch:
1d75a8e2
NC		 3215 if (!aarch64_relocate (AARCH64_R (ADR_PREL_PG_HI21), stub_bfd, stub_sec,
3216 stub_entry->stub_offset, sym_value))
a06ea964
NC		 3217 /* The stub would not have been relaxed if the offset was out
3218 of range. */
3219 BFD_FAIL ();
3220
1d75a8e2
NC		 3221 if (!aarch64_relocate (AARCH64_R (ADD_ABS_LO12_NC), stub_bfd, stub_sec,
3222 stub_entry->stub_offset + 4, sym_value))
93ca8569 3223 BFD_FAIL ();
a06ea964
NC		 3224 break;
3225
3226 case aarch64_stub_long_branch:
3227 /* We want the value relative to the address 12 bytes back from the
07d6d2b8 3228 value itself. */
1d75a8e2
NC		 3229 if (!aarch64_relocate (AARCH64_R (PRELNN), stub_bfd, stub_sec,
3230 stub_entry->stub_offset + 16, sym_value + 12))
93ca8569 3231 BFD_FAIL ();
a06ea964 3232 break;
68fcca92
JW		 3233
3234 case aarch64_stub_erratum_835769_veneer:
3235 veneered_insn_loc = stub_entry->target_section->output_section->vma
3236 + stub_entry->target_section->output_offset
3237 + stub_entry->target_value;
3238 veneer_entry_loc = stub_entry->stub_sec->output_section->vma
3239 + stub_entry->stub_sec->output_offset
3240 + stub_entry->stub_offset;
3241 branch_offset = veneered_insn_loc - veneer_entry_loc;
3242 branch_offset >>= 2;
3243 branch_offset &= 0x3ffffff;
3244 bfd_putl32 (stub_entry->veneered_insn,
3245 stub_sec->contents + stub_entry->stub_offset);
3246 bfd_putl32 (template[1] | branch_offset,
3247 stub_sec->contents + stub_entry->stub_offset + 4);
3248 break;
3249
4106101c 3250 case aarch64_stub_erratum_843419_veneer:
1d75a8e2
NC		 3251 if (!aarch64_relocate (AARCH64_R (JUMP26), stub_bfd, stub_sec,
3252 stub_entry->stub_offset + 4, sym_value + 4))
4106101c
MS		 3253 BFD_FAIL ();
3254 break;
3255
a06ea964 3256 default:
8e2fe09f 3257 abort ();
a06ea964
NC		 3258 }
3259
3260 return TRUE;
3261}
3262
3263/* As above, but don't actually build the stub. Just bump offset so
3264 we know stub section sizes. */
3265
3266static bfd_boolean
3267aarch64_size_one_stub (struct bfd_hash_entry *gen_entry,
3268 void *in_arg ATTRIBUTE_UNUSED)
3269{
cec5225b 3270 struct elf_aarch64_stub_hash_entry *stub_entry;
a06ea964
NC		 3271 int size;
3272
3273 /* Massage our args to the form they really have. */
cec5225b 3274 stub_entry = (struct elf_aarch64_stub_hash_entry *) gen_entry;
a06ea964
NC		 3275
3276 switch (stub_entry->stub_type)
3277 {
3278 case aarch64_stub_adrp_branch:
3279 size = sizeof (aarch64_adrp_branch_stub);
3280 break;
3281 case aarch64_stub_long_branch:
3282 size = sizeof (aarch64_long_branch_stub);
3283 break;
68fcca92
JW		 3284 case aarch64_stub_erratum_835769_veneer:
3285 size = sizeof (aarch64_erratum_835769_stub);
3286 break;
4106101c
MS		 3287 case aarch64_stub_erratum_843419_veneer:
3288 size = sizeof (aarch64_erratum_843419_stub);
3289 break;
a06ea964 3290 default:
8e2fe09f 3291 abort ();
a06ea964
NC		 3292 }
3293
3294 size = (size + 7) & ~7;
3295 stub_entry->stub_sec->size += size;
3296 return TRUE;
3297}
3298
3299/* External entry points for sizing and building linker stubs. */
3300
3301/* Set up various things so that we can make a list of input sections
3302 for each output section included in the link. Returns -1 on error,
3303 0 when no stubs will be needed, and 1 on success. */
3304
3305int
cec5225b 3306elfNN_aarch64_setup_section_lists (bfd *output_bfd,
a06ea964
NC		 3307 struct bfd_link_info *info)
3308{
3309 bfd *input_bfd;
3310 unsigned int bfd_count;
7292b3ac 3311 unsigned int top_id, top_index;
a06ea964
NC		 3312 asection *section;
3313 asection **input_list, **list;
3314 bfd_size_type amt;
cec5225b
YZ		 3315 struct elf_aarch64_link_hash_table *htab =
3316 elf_aarch64_hash_table (info);
a06ea964
NC		 3317
3318 if (!is_elf_hash_table (htab))
3319 return 0;
3320
3321 /* Count the number of input BFDs and find the top input section id. */
3322 for (input_bfd = info->input_bfds, bfd_count = 0, top_id = 0;
c72f2fb2 3323 input_bfd != NULL; input_bfd = input_bfd->link.next)
a06ea964
NC		 3324 {
3325 bfd_count += 1;
3326 for (section = input_bfd->sections;
3327 section != NULL; section = section->next)
3328 {
3329 if (top_id < section->id)
3330 top_id = section->id;
3331 }
3332 }
3333 htab->bfd_count = bfd_count;
3334
3335 amt = sizeof (struct map_stub) * (top_id + 1);
3336 htab->stub_group = bfd_zmalloc (amt);
3337 if (htab->stub_group == NULL)
3338 return -1;
3339
3340 /* We can't use output_bfd->section_count here to find the top output
3341 section index as some sections may have been removed, and
3342 _bfd_strip_section_from_output doesn't renumber the indices. */
3343 for (section = output_bfd->sections, top_index = 0;
3344 section != NULL; section = section->next)
3345 {
3346 if (top_index < section->index)
3347 top_index = section->index;
3348 }
3349
3350 htab->top_index = top_index;
3351 amt = sizeof (asection *) * (top_index + 1);
3352 input_list = bfd_malloc (amt);
3353 htab->input_list = input_list;
3354 if (input_list == NULL)
3355 return -1;
3356
3357 /* For sections we aren't interested in, mark their entries with a
3358 value we can check later. */
3359 list = input_list + top_index;
3360 do
3361 *list = bfd_abs_section_ptr;
3362 while (list-- != input_list);
3363
3364 for (section = output_bfd->sections;
3365 section != NULL; section = section->next)
3366 {
3367 if ((section->flags & SEC_CODE) != 0)
3368 input_list[section->index] = NULL;
3369 }
3370
3371 return 1;
3372}
3373
cec5225b 3374/* Used by elfNN_aarch64_next_input_section and group_sections. */
a06ea964
NC		 3375#define PREV_SEC(sec) (htab->stub_group[(sec)->id].link_sec)
3376
3377/* The linker repeatedly calls this function for each input section,
3378 in the order that input sections are linked into output sections.
3379 Build lists of input sections to determine groupings between which
3380 we may insert linker stubs. */
3381
3382void
cec5225b 3383elfNN_aarch64_next_input_section (struct bfd_link_info *info, asection *isec)
a06ea964 3384{
cec5225b
YZ		 3385 struct elf_aarch64_link_hash_table *htab =
3386 elf_aarch64_hash_table (info);
a06ea964
NC		 3387
3388 if (isec->output_section->index <= htab->top_index)
3389 {
3390 asection **list = htab->input_list + isec->output_section->index;
3391
3392 if (*list != bfd_abs_section_ptr)
3393 {
3394 /* Steal the link_sec pointer for our list. */
3395 /* This happens to make the list in reverse order,
3396 which is what we want. */
3397 PREV_SEC (isec) = *list;
3398 *list = isec;
3399 }
3400 }
3401}
3402
3403/* See whether we can group stub sections together. Grouping stub
3404 sections may result in fewer stubs. More importantly, we need to
3405 put all .init* and .fini* stubs at the beginning of the .init or
3406 .fini output sections respectively, because glibc splits the
3407 _init and _fini functions into multiple parts. Putting a stub in
3408 the middle of a function is not a good idea. */
3409
3410static void
cec5225b 3411group_sections (struct elf_aarch64_link_hash_table *htab,
a06ea964
NC		 3412 bfd_size_type stub_group_size,
3413 bfd_boolean stubs_always_before_branch)
3414{
3415 asection **list = htab->input_list + htab->top_index;
3416
3417 do
3418 {
3419 asection *tail = *list;
3420
3421 if (tail == bfd_abs_section_ptr)
3422 continue;
3423
3424 while (tail != NULL)
3425 {
3426 asection *curr;
3427 asection *prev;
3428 bfd_size_type total;
3429
3430 curr = tail;
3431 total = tail->size;
3432 while ((prev = PREV_SEC (curr)) != NULL
3433 && ((total += curr->output_offset - prev->output_offset)
3434 < stub_group_size))
3435 curr = prev;
3436
3437 /* OK, the size from the start of CURR to the end is less
3438 than stub_group_size and thus can be handled by one stub
3439 section. (Or the tail section is itself larger than
3440 stub_group_size, in which case we may be toast.)
3441 We should really be keeping track of the total size of
3442 stubs added here, as stubs contribute to the final output
3443 section size. */
3444 do
3445 {
3446 prev = PREV_SEC (tail);
3447 /* Set up this stub group. */
3448 htab->stub_group[tail->id].link_sec = curr;
3449 }
3450 while (tail != curr && (tail = prev) != NULL);
3451
3452 /* But wait, there's more! Input sections up to stub_group_size
3453 bytes before the stub section can be handled by it too. */
3454 if (!stubs_always_before_branch)
3455 {
3456 total = 0;
3457 while (prev != NULL
3458 && ((total += tail->output_offset - prev->output_offset)
3459 < stub_group_size))
3460 {
3461 tail = prev;
3462 prev = PREV_SEC (tail);
3463 htab->stub_group[tail->id].link_sec = curr;
3464 }
3465 }
3466 tail = prev;
3467 }
3468 }
3469 while (list-- != htab->input_list);
3470
3471 free (htab->input_list);
3472}
3473
3474#undef PREV_SEC
3475
68fcca92
JW		 3476#define AARCH64_BITS(x, pos, n) (((x) >> (pos)) & ((1 << (n)) - 1))
3477
3478#define AARCH64_RT(insn) AARCH64_BITS (insn, 0, 5)
3479#define AARCH64_RT2(insn) AARCH64_BITS (insn, 10, 5)
3480#define AARCH64_RA(insn) AARCH64_BITS (insn, 10, 5)
3481#define AARCH64_RD(insn) AARCH64_BITS (insn, 0, 5)
3482#define AARCH64_RN(insn) AARCH64_BITS (insn, 5, 5)
3483#define AARCH64_RM(insn) AARCH64_BITS (insn, 16, 5)
3484
3485#define AARCH64_MAC(insn) (((insn) & 0xff000000) == 0x9b000000)
3486#define AARCH64_BIT(insn, n) AARCH64_BITS (insn, n, 1)
3487#define AARCH64_OP31(insn) AARCH64_BITS (insn, 21, 3)
3488#define AARCH64_ZR 0x1f
3489
3490/* All ld/st ops. See C4-182 of the ARM ARM. The encoding space for
3491 LD_PCREL, LDST_RO, LDST_UI and LDST_UIMM cover prefetch ops. */
3492
3493#define AARCH64_LD(insn) (AARCH64_BIT (insn, 22) == 1)
3494#define AARCH64_LDST(insn) (((insn) & 0x0a000000) == 0x08000000)
3495#define AARCH64_LDST_EX(insn) (((insn) & 0x3f000000) == 0x08000000)
3496#define AARCH64_LDST_PCREL(insn) (((insn) & 0x3b000000) == 0x18000000)
3497#define AARCH64_LDST_NAP(insn) (((insn) & 0x3b800000) == 0x28000000)
3498#define AARCH64_LDSTP_PI(insn) (((insn) & 0x3b800000) == 0x28800000)
3499#define AARCH64_LDSTP_O(insn) (((insn) & 0x3b800000) == 0x29000000)
3500#define AARCH64_LDSTP_PRE(insn) (((insn) & 0x3b800000) == 0x29800000)
3501#define AARCH64_LDST_UI(insn) (((insn) & 0x3b200c00) == 0x38000000)
3502#define AARCH64_LDST_PIIMM(insn) (((insn) & 0x3b200c00) == 0x38000400)
3503#define AARCH64_LDST_U(insn) (((insn) & 0x3b200c00) == 0x38000800)
3504#define AARCH64_LDST_PREIMM(insn) (((insn) & 0x3b200c00) == 0x38000c00)
3505#define AARCH64_LDST_RO(insn) (((insn) & 0x3b200c00) == 0x38200800)
3506#define AARCH64_LDST_UIMM(insn) (((insn) & 0x3b000000) == 0x39000000)
3507#define AARCH64_LDST_SIMD_M(insn) (((insn) & 0xbfbf0000) == 0x0c000000)
3508#define AARCH64_LDST_SIMD_M_PI(insn) (((insn) & 0xbfa00000) == 0x0c800000)
3509#define AARCH64_LDST_SIMD_S(insn) (((insn) & 0xbf9f0000) == 0x0d000000)
3510#define AARCH64_LDST_SIMD_S_PI(insn) (((insn) & 0xbf800000) == 0x0d800000)
3511
3d14faea
MS		 3512/* Classify an INSN if it is indeed a load/store.
3513
3514 Return TRUE if INSN is a LD/ST instruction otherwise return FALSE.
3515
3516 For scalar LD/ST instructions PAIR is FALSE, RT is returned and RT2
3517 is set equal to RT.
3518
2d0ca824 3519 For LD/ST pair instructions PAIR is TRUE, RT and RT2 are returned. */
68fcca92
JW		 3520
3521static bfd_boolean
3d14faea 3522aarch64_mem_op_p (uint32_t insn, unsigned int *rt, unsigned int *rt2,
68fcca92
JW		 3523 bfd_boolean *pair, bfd_boolean *load)
3524{
3525 uint32_t opcode;
3526 unsigned int r;
3527 uint32_t opc = 0;
3528 uint32_t v = 0;
3529 uint32_t opc_v = 0;
3530
de194d85 3531 /* Bail out quickly if INSN doesn't fall into the load-store
68fcca92
JW		 3532 encoding space. */
3533 if (!AARCH64_LDST (insn))
3534 return FALSE;
3535
3536 *pair = FALSE;
3537 *load = FALSE;
3538 if (AARCH64_LDST_EX (insn))
3539 {
3540 *rt = AARCH64_RT (insn);
3d14faea 3541 *rt2 = *rt;
68fcca92 3542 if (AARCH64_BIT (insn, 21) == 1)
07d6d2b8 3543 {
68fcca92 3544 *pair = TRUE;
3d14faea 3545 *rt2 = AARCH64_RT2 (insn);
68fcca92
JW		 3546 }
3547 *load = AARCH64_LD (insn);
3548 return TRUE;
3549 }
3550 else if (AARCH64_LDST_NAP (insn)
3551 || AARCH64_LDSTP_PI (insn)
3552 || AARCH64_LDSTP_O (insn)
3553 || AARCH64_LDSTP_PRE (insn))
3554 {
3555 *pair = TRUE;
3556 *rt = AARCH64_RT (insn);
3d14faea 3557 *rt2 = AARCH64_RT2 (insn);
68fcca92
JW		 3558 *load = AARCH64_LD (insn);
3559 return TRUE;
3560 }
3561 else if (AARCH64_LDST_PCREL (insn)
3562 || AARCH64_LDST_UI (insn)
3563 || AARCH64_LDST_PIIMM (insn)
3564 || AARCH64_LDST_U (insn)
3565 || AARCH64_LDST_PREIMM (insn)
3566 || AARCH64_LDST_RO (insn)
3567 || AARCH64_LDST_UIMM (insn))
3568 {
3569 *rt = AARCH64_RT (insn);
3d14faea 3570 *rt2 = *rt;
68fcca92
JW		 3571 if (AARCH64_LDST_PCREL (insn))
3572 *load = TRUE;
3573 opc = AARCH64_BITS (insn, 22, 2);
3574 v = AARCH64_BIT (insn, 26);
3575 opc_v = opc | (v << 2);
3576 *load = (opc_v == 1 || opc_v == 2 || opc_v == 3
3577 || opc_v == 5 || opc_v == 7);
3578 return TRUE;
3579 }
3580 else if (AARCH64_LDST_SIMD_M (insn)
3581 || AARCH64_LDST_SIMD_M_PI (insn))
3582 {
3583 *rt = AARCH64_RT (insn);
3584 *load = AARCH64_BIT (insn, 22);
3585 opcode = (insn >> 12) & 0xf;
3586 switch (opcode)
3587 {
3588 case 0:
3589 case 2:
3d14faea 3590 *rt2 = *rt + 3;
68fcca92
JW		 3591 break;
3592
3593 case 4:
3594 case 6:
3d14faea 3595 *rt2 = *rt + 2;
68fcca92
JW		 3596 break;
3597
3598 case 7:
3d14faea 3599 *rt2 = *rt;
68fcca92
JW		 3600 break;
3601
3602 case 8:
3603 case 10:
3d14faea 3604 *rt2 = *rt + 1;
68fcca92
JW		 3605 break;
3606
3607 default:
3608 return FALSE;
3609 }
3610 return TRUE;
3611 }
3612 else if (AARCH64_LDST_SIMD_S (insn)
3613 || AARCH64_LDST_SIMD_S_PI (insn))
3614 {
3615 *rt = AARCH64_RT (insn);
3616 r = (insn >> 21) & 1;
3617 *load = AARCH64_BIT (insn, 22);
3618 opcode = (insn >> 13) & 0x7;
3619 switch (opcode)
3620 {
3621 case 0:
3622 case 2:
3623 case 4:
3d14faea 3624 *rt2 = *rt + r;
68fcca92
JW		 3625 break;
3626
3627 case 1:
3628 case 3:
3629 case 5:
3d14faea 3630 *rt2 = *rt + (r == 0 ? 2 : 3);
68fcca92
JW		 3631 break;
3632
3633 case 6:
3d14faea 3634 *rt2 = *rt + r;
68fcca92
JW		 3635 break;
3636
3637 case 7:
3d14faea 3638 *rt2 = *rt + (r == 0 ? 2 : 3);
68fcca92
JW		 3639 break;
3640
3641 default:
3642 return FALSE;
3643 }
3644 return TRUE;
3645 }
3646
3647 return FALSE;
3648}
3649
3650/* Return TRUE if INSN is multiply-accumulate. */
3651
3652static bfd_boolean
3653aarch64_mlxl_p (uint32_t insn)
3654{
3655 uint32_t op31 = AARCH64_OP31 (insn);
3656
3657 if (AARCH64_MAC (insn)
3658 && (op31 == 0 || op31 == 1 || op31 == 5)
3659 /* Exclude MUL instructions which are encoded as a multiple accumulate
3660 with RA = XZR. */
3661 && AARCH64_RA (insn) != AARCH64_ZR)
3662 return TRUE;
3663
3664 return FALSE;
3665}
3666
3667/* Some early revisions of the Cortex-A53 have an erratum (835769) whereby
3668 it is possible for a 64-bit multiply-accumulate instruction to generate an
3669 incorrect result. The details are quite complex and hard to
3670 determine statically, since branches in the code may exist in some
3671 circumstances, but all cases end with a memory (load, store, or
3672 prefetch) instruction followed immediately by the multiply-accumulate
3673 operation. We employ a linker patching technique, by moving the potentially
3674 affected multiply-accumulate instruction into a patch region and replacing
3675 the original instruction with a branch to the patch. This function checks
3676 if INSN_1 is the memory operation followed by a multiply-accumulate
3677 operation (INSN_2). Return TRUE if an erratum sequence is found, FALSE
3678 if INSN_1 and INSN_2 are safe. */
3679
3680static bfd_boolean
3681aarch64_erratum_sequence (uint32_t insn_1, uint32_t insn_2)
3682{
3683 uint32_t rt;
3d14faea 3684 uint32_t rt2;
68fcca92
JW		 3685 uint32_t rn;
3686 uint32_t rm;
3687 uint32_t ra;
3688 bfd_boolean pair;
3689 bfd_boolean load;
3690
3691 if (aarch64_mlxl_p (insn_2)
3d14faea 3692 && aarch64_mem_op_p (insn_1, &rt, &rt2, &pair, &load))
68fcca92
JW		 3693 {
3694 /* Any SIMD memory op is independent of the subsequent MLA
3695 by definition of the erratum. */
3696 if (AARCH64_BIT (insn_1, 26))
3697 return TRUE;
3698
3699 /* If not SIMD, check for integer memory ops and MLA relationship. */
3700 rn = AARCH64_RN (insn_2);
3701 ra = AARCH64_RA (insn_2);
3702 rm = AARCH64_RM (insn_2);
3703
3704 /* If this is a load and there's a true(RAW) dependency, we are safe
3705 and this is not an erratum sequence. */
3706 if (load &&
3707 (rt == rn || rt == rm || rt == ra
3d14faea 3708 || (pair && (rt2 == rn || rt2 == rm || rt2 == ra))))
68fcca92
JW		 3709 return FALSE;
3710
3711 /* We conservatively put out stubs for all other cases (including
3712 writebacks). */
3713 return TRUE;
3714 }
3715
3716 return FALSE;
3717}
3718
520c7b56
JW		 3719/* Used to order a list of mapping symbols by address. */
3720
3721static int
3722elf_aarch64_compare_mapping (const void *a, const void *b)
3723{
3724 const elf_aarch64_section_map *amap = (const elf_aarch64_section_map *) a;
3725 const elf_aarch64_section_map *bmap = (const elf_aarch64_section_map *) b;
3726
3727 if (amap->vma > bmap->vma)
3728 return 1;
3729 else if (amap->vma < bmap->vma)
3730 return -1;
3731 else if (amap->type > bmap->type)
3732 /* Ensure results do not depend on the host qsort for objects with
3733 multiple mapping symbols at the same address by sorting on type
3734 after vma. */
3735 return 1;
3736 else if (amap->type < bmap->type)
3737 return -1;
3738 else
3739 return 0;
3740}
3741
2144188d 3742
35fee8b7
MS		 3743static char *
3744_bfd_aarch64_erratum_835769_stub_name (unsigned num_fixes)
3745{
3746 char *stub_name = (char *) bfd_malloc
3747 (strlen ("__erratum_835769_veneer_") + 16);
bb69498c
NC		 3748 if (stub_name != NULL)
3749 sprintf (stub_name,"__erratum_835769_veneer_%d", num_fixes);
35fee8b7
MS		 3750 return stub_name;
3751}
3752
4106101c 3753/* Scan for Cortex-A53 erratum 835769 sequence.
2144188d
MS		 3754
3755 Return TRUE else FALSE on abnormal termination. */
3756
68fcca92 3757static bfd_boolean
5421cc6e
MS		 3758_bfd_aarch64_erratum_835769_scan (bfd *input_bfd,
3759 struct bfd_link_info *info,
3760 unsigned int *num_fixes_p)
68fcca92
JW		 3761{
3762 asection *section;
3763 struct elf_aarch64_link_hash_table *htab = elf_aarch64_hash_table (info);
68fcca92 3764 unsigned int num_fixes = *num_fixes_p;
68fcca92
JW		 3765
3766 if (htab == NULL)
2144188d 3767 return TRUE;
68fcca92
JW		 3768
3769 for (section = input_bfd->sections;
3770 section != NULL;
3771 section = section->next)
3772 {
3773 bfd_byte *contents = NULL;
3774 struct _aarch64_elf_section_data *sec_data;
3775 unsigned int span;
3776
3777 if (elf_section_type (section) != SHT_PROGBITS
3778 || (elf_section_flags (section) & SHF_EXECINSTR) == 0
3779 || (section->flags & SEC_EXCLUDE) != 0
3780 || (section->sec_info_type == SEC_INFO_TYPE_JUST_SYMS)
3781 || (section->output_section == bfd_abs_section_ptr))
3782 continue;
3783
3784 if (elf_section_data (section)->this_hdr.contents != NULL)
3785 contents = elf_section_data (section)->this_hdr.contents;
3786 else if (! bfd_malloc_and_get_section (input_bfd, section, &contents))
2144188d 3787 return FALSE;
68fcca92
JW		 3788
3789 sec_data = elf_aarch64_section_data (section);
520c7b56
JW		 3790
3791 qsort (sec_data->map, sec_data->mapcount,
3792 sizeof (elf_aarch64_section_map), elf_aarch64_compare_mapping);
3793
68fcca92
JW		 3794 for (span = 0; span < sec_data->mapcount; span++)
3795 {
3796 unsigned int span_start = sec_data->map[span].vma;
3797 unsigned int span_end = ((span == sec_data->mapcount - 1)
3798 ? sec_data->map[0].vma + section->size
3799 : sec_data->map[span + 1].vma);
3800 unsigned int i;
3801 char span_type = sec_data->map[span].type;
3802
3803 if (span_type == 'd')
3804 continue;
3805
3806 for (i = span_start; i + 4 < span_end; i += 4)
3807 {
3808 uint32_t insn_1 = bfd_getl32 (contents + i);
3809 uint32_t insn_2 = bfd_getl32 (contents + i + 4);
3810
3811 if (aarch64_erratum_sequence (insn_1, insn_2))
3812 {
5421cc6e 3813 struct elf_aarch64_stub_hash_entry *stub_entry;
35fee8b7
MS		 3814 char *stub_name = _bfd_aarch64_erratum_835769_stub_name (num_fixes);
3815 if (! stub_name)
2144188d 3816 return FALSE;
68fcca92 3817
5421cc6e
MS		 3818 stub_entry = _bfd_aarch64_add_stub_entry_in_group (stub_name,
3819 section,
3820 htab);
3821 if (! stub_entry)
3822 return FALSE;
68fcca92 3823
5421cc6e
MS		 3824 stub_entry->stub_type = aarch64_stub_erratum_835769_veneer;
3825 stub_entry->target_section = section;
3826 stub_entry->target_value = i + 4;
3827 stub_entry->veneered_insn = insn_2;
3828 stub_entry->output_name = stub_name;
68fcca92
JW		 3829 num_fixes++;
3830 }
3831 }
3832 }
3833 if (elf_section_data (section)->this_hdr.contents == NULL)
3834 free (contents);
3835 }
3836
357d1523
MS		 3837 *num_fixes_p = num_fixes;
3838
2144188d 3839 return TRUE;
68fcca92
JW		 3840}
3841
13f622ec 3842
4106101c
MS		 3843/* Test if instruction INSN is ADRP. */
3844
3845static bfd_boolean
3846_bfd_aarch64_adrp_p (uint32_t insn)
3847{
3848 return ((insn & 0x9f000000) == 0x90000000);
3849}
3850
3851
3852/* Helper predicate to look for cortex-a53 erratum 843419 sequence 1. */
3853
3854static bfd_boolean
3855_bfd_aarch64_erratum_843419_sequence_p (uint32_t insn_1, uint32_t insn_2,
3856 uint32_t insn_3)
3857{
3858 uint32_t rt;
3859 uint32_t rt2;
3860 bfd_boolean pair;
3861 bfd_boolean load;
3862
3863 return (aarch64_mem_op_p (insn_2, &rt, &rt2, &pair, &load)
3864 && (!pair
3865 || (pair && !load))
3866 && AARCH64_LDST_UIMM (insn_3)
3867 && AARCH64_RN (insn_3) == AARCH64_RD (insn_1));
3868}
3869
3870
3871/* Test for the presence of Cortex-A53 erratum 843419 instruction sequence.
3872
3873 Return TRUE if section CONTENTS at offset I contains one of the
3874 erratum 843419 sequences, otherwise return FALSE. If a sequence is
3875 seen set P_VENEER_I to the offset of the final LOAD/STORE
3876 instruction in the sequence.
3877 */
3878
3879static bfd_boolean
3880_bfd_aarch64_erratum_843419_p (bfd_byte *contents, bfd_vma vma,
3881 bfd_vma i, bfd_vma span_end,
3882 bfd_vma *p_veneer_i)
3883{
3884 uint32_t insn_1 = bfd_getl32 (contents + i);
3885
3886 if (!_bfd_aarch64_adrp_p (insn_1))
3887 return FALSE;
3888
3889 if (span_end < i + 12)
3890 return FALSE;
3891
3892 uint32_t insn_2 = bfd_getl32 (contents + i + 4);
3893 uint32_t insn_3 = bfd_getl32 (contents + i + 8);
3894
3895 if ((vma & 0xfff) != 0xff8 && (vma & 0xfff) != 0xffc)
3896 return FALSE;
3897
3898 if (_bfd_aarch64_erratum_843419_sequence_p (insn_1, insn_2, insn_3))
3899 {
3900 *p_veneer_i = i + 8;
3901 return TRUE;
3902 }
3903
3904 if (span_end < i + 16)
3905 return FALSE;
3906
3907 uint32_t insn_4 = bfd_getl32 (contents + i + 12);
3908
3909 if (_bfd_aarch64_erratum_843419_sequence_p (insn_1, insn_2, insn_4))
3910 {
3911 *p_veneer_i = i + 12;
3912 return TRUE;
3913 }
3914
3915 return FALSE;
3916}
3917
3918
13f622ec
MS		 3919/* Resize all stub sections. */
3920
3921static void
3922_bfd_aarch64_resize_stubs (struct elf_aarch64_link_hash_table *htab)
3923{
3924 asection *section;
3925
3926 /* OK, we've added some stubs. Find out the new size of the
3927 stub sections. */
3928 for (section = htab->stub_bfd->sections;
3929 section != NULL; section = section->next)
3930 {
3931 /* Ignore non-stub sections. */
3932 if (!strstr (section->name, STUB_SUFFIX))
3933 continue;
3934 section->size = 0;
3935 }
3936
3937 bfd_hash_traverse (&htab->stub_hash_table, aarch64_size_one_stub, htab);
13f622ec 3938
61865519
MS		 3939 for (section = htab->stub_bfd->sections;
3940 section != NULL; section = section->next)
3941 {
3942 if (!strstr (section->name, STUB_SUFFIX))
3943 continue;
3944
9a2ebffd
JW		 3945 /* Add space for a branch. Add 8 bytes to keep section 8 byte aligned,
3946 as long branch stubs contain a 64-bit address. */
61865519 3947 if (section->size)
9a2ebffd 3948 section->size += 8;
4106101c
MS		 3949
3950 /* Ensure all stub sections have a size which is a multiple of
3951 4096. This is important in order to ensure that the insertion
3952 of stub sections does not in itself move existing code around
3953 in such a way that new errata sequences are created. */
3954 if (htab->fix_erratum_843419)
3955 if (section->size)
3956 section->size = BFD_ALIGN (section->size, 0x1000);
3957 }
3958}
3959
9a2ebffd 3960/* Construct an erratum 843419 workaround stub name. */
4106101c
MS		 3961
3962static char *
3963_bfd_aarch64_erratum_843419_stub_name (asection *input_section,
3964 bfd_vma offset)
3965{
3966 const bfd_size_type len = 8 + 4 + 1 + 8 + 1 + 16 + 1;
3967 char *stub_name = bfd_malloc (len);
3968
3969 if (stub_name != NULL)
3970 snprintf (stub_name, len, "e843419@%04x_%08x_%" BFD_VMA_FMT "x",
3971 input_section->owner->id,
3972 input_section->id,
3973 offset);
3974 return stub_name;
3975}
3976
3977/* Build a stub_entry structure describing an 843419 fixup.
3978
3979 The stub_entry constructed is populated with the bit pattern INSN
3980 of the instruction located at OFFSET within input SECTION.
3981
3982 Returns TRUE on success. */
3983
3984static bfd_boolean
3985_bfd_aarch64_erratum_843419_fixup (uint32_t insn,
3986 bfd_vma adrp_offset,
3987 bfd_vma ldst_offset,
3988 asection *section,
3989 struct bfd_link_info *info)
3990{
3991 struct elf_aarch64_link_hash_table *htab = elf_aarch64_hash_table (info);
3992 char *stub_name;
3993 struct elf_aarch64_stub_hash_entry *stub_entry;
3994
3995 stub_name = _bfd_aarch64_erratum_843419_stub_name (section, ldst_offset);
bb69498c
NC		 3996 if (stub_name == NULL)
3997 return FALSE;
4106101c
MS		 3998 stub_entry = aarch64_stub_hash_lookup (&htab->stub_hash_table, stub_name,
3999 FALSE, FALSE);
4000 if (stub_entry)
4001 {
4002 free (stub_name);
4003 return TRUE;
4004 }
4005
4006 /* We always place an 843419 workaround veneer in the stub section
4007 attached to the input section in which an erratum sequence has
4008 been found. This ensures that later in the link process (in
4009 elfNN_aarch64_write_section) when we copy the veneered
4010 instruction from the input section into the stub section the
4011 copied instruction will have had any relocations applied to it.
4012 If we placed workaround veneers in any other stub section then we
4013 could not assume that all relocations have been processed on the
4014 corresponding input section at the point we output the stub
bb69498c 4015 section. */
4106101c
MS		 4016
4017 stub_entry = _bfd_aarch64_add_stub_entry_after (stub_name, section, htab);
4018 if (stub_entry == NULL)
4019 {
4020 free (stub_name);
4021 return FALSE;
4022 }
4023
4024 stub_entry->adrp_offset = adrp_offset;
4025 stub_entry->target_value = ldst_offset;
4026 stub_entry->target_section = section;
4027 stub_entry->stub_type = aarch64_stub_erratum_843419_veneer;
4028 stub_entry->veneered_insn = insn;
4029 stub_entry->output_name = stub_name;
4030
4031 return TRUE;
4032}
4033
4034
4035/* Scan an input section looking for the signature of erratum 843419.
4036
4037 Scans input SECTION in INPUT_BFD looking for erratum 843419
4038 signatures, for each signature found a stub_entry is created
4039 describing the location of the erratum for subsequent fixup.
4040
4041 Return TRUE on successful scan, FALSE on failure to scan.
4042 */
4043
4044static bfd_boolean
4045_bfd_aarch64_erratum_843419_scan (bfd *input_bfd, asection *section,
4046 struct bfd_link_info *info)
4047{
4048 struct elf_aarch64_link_hash_table *htab = elf_aarch64_hash_table (info);
4049
4050 if (htab == NULL)
4051 return TRUE;
4052
4053 if (elf_section_type (section) != SHT_PROGBITS
4054 || (elf_section_flags (section) & SHF_EXECINSTR) == 0
4055 || (section->flags & SEC_EXCLUDE) != 0
4056 || (section->sec_info_type == SEC_INFO_TYPE_JUST_SYMS)
4057 || (section->output_section == bfd_abs_section_ptr))
4058 return TRUE;
4059
4060 do
4061 {
4062 bfd_byte *contents = NULL;
4063 struct _aarch64_elf_section_data *sec_data;
4064 unsigned int span;
4065
4066 if (elf_section_data (section)->this_hdr.contents != NULL)
4067 contents = elf_section_data (section)->this_hdr.contents;
4068 else if (! bfd_malloc_and_get_section (input_bfd, section, &contents))
4069 return FALSE;
4070
4071 sec_data = elf_aarch64_section_data (section);
4072
4073 qsort (sec_data->map, sec_data->mapcount,
4074 sizeof (elf_aarch64_section_map), elf_aarch64_compare_mapping);
4075
4076 for (span = 0; span < sec_data->mapcount; span++)
4077 {
4078 unsigned int span_start = sec_data->map[span].vma;
4079 unsigned int span_end = ((span == sec_data->mapcount - 1)
4080 ? sec_data->map[0].vma + section->size
4081 : sec_data->map[span + 1].vma);
4082 unsigned int i;
4083 char span_type = sec_data->map[span].type;
4084
4085 if (span_type == 'd')
4086 continue;
4087
4088 for (i = span_start; i + 8 < span_end; i += 4)
4089 {
4090 bfd_vma vma = (section->output_section->vma
4091 + section->output_offset
4092 + i);
4093 bfd_vma veneer_i;
4094
4095 if (_bfd_aarch64_erratum_843419_p
4096 (contents, vma, i, span_end, &veneer_i))
4097 {
4098 uint32_t insn = bfd_getl32 (contents + veneer_i);
4099
4100 if (!_bfd_aarch64_erratum_843419_fixup (insn, i, veneer_i,
4101 section, info))
4102 return FALSE;
4103 }
4104 }
4105 }
4106
4107 if (elf_section_data (section)->this_hdr.contents == NULL)
4108 free (contents);
61865519 4109 }
4106101c
MS		 4110 while (0);
4111
4112 return TRUE;
61865519 4113}
13f622ec 4114
4106101c 4115
a06ea964
NC		 4116/* Determine and set the size of the stub section for a final link.
4117
4118 The basic idea here is to examine all the relocations looking for
4119 PC-relative calls to a target that is unreachable with a "bl"
4120 instruction. */
4121
4122bfd_boolean
cec5225b 4123elfNN_aarch64_size_stubs (bfd *output_bfd,
a06ea964
NC		 4124 bfd *stub_bfd,
4125 struct bfd_link_info *info,
4126 bfd_signed_vma group_size,
4127 asection * (*add_stub_section) (const char *,
4128 asection *),
4129 void (*layout_sections_again) (void))
4130{
4131 bfd_size_type stub_group_size;
4132 bfd_boolean stubs_always_before_branch;
5421cc6e 4133 bfd_boolean stub_changed = FALSE;
cec5225b 4134 struct elf_aarch64_link_hash_table *htab = elf_aarch64_hash_table (info);
68fcca92 4135 unsigned int num_erratum_835769_fixes = 0;
a06ea964
NC		 4136
4137 /* Propagate mach to stub bfd, because it may not have been
4138 finalized when we created stub_bfd. */
4139 bfd_set_arch_mach (stub_bfd, bfd_get_arch (output_bfd),
4140 bfd_get_mach (output_bfd));
4141
4142 /* Stash our params away. */
4143 htab->stub_bfd = stub_bfd;
4144 htab->add_stub_section = add_stub_section;
4145 htab->layout_sections_again = layout_sections_again;
4146 stubs_always_before_branch = group_size < 0;
4147 if (group_size < 0)
4148 stub_group_size = -group_size;
4149 else
4150 stub_group_size = group_size;
4151
4152 if (stub_group_size == 1)
4153 {
4154 /* Default values. */
b9eead84 4155 /* AArch64 branch range is +-128MB. The value used is 1MB less. */
a06ea964
NC		 4156 stub_group_size = 127 * 1024 * 1024;
4157 }
4158
4159 group_sections (htab, stub_group_size, stubs_always_before_branch);
4160
4106101c
MS		 4161 (*htab->layout_sections_again) ();
4162
5421cc6e
MS		 4163 if (htab->fix_erratum_835769)
4164 {
4165 bfd *input_bfd;
4166
4167 for (input_bfd = info->input_bfds;
4168 input_bfd != NULL; input_bfd = input_bfd->link.next)
4169 if (!_bfd_aarch64_erratum_835769_scan (input_bfd, info,
4170 &num_erratum_835769_fixes))
4171 return FALSE;
4172
4106101c
MS		 4173 _bfd_aarch64_resize_stubs (htab);
4174 (*htab->layout_sections_again) ();
4175 }
4176
4177 if (htab->fix_erratum_843419)
4178 {
4179 bfd *input_bfd;
4180
4181 for (input_bfd = info->input_bfds;
4182 input_bfd != NULL;
4183 input_bfd = input_bfd->link.next)
4184 {
4185 asection *section;
4186
4187 for (section = input_bfd->sections;
4188 section != NULL;
4189 section = section->next)
4190 if (!_bfd_aarch64_erratum_843419_scan (input_bfd, section, info))
4191 return FALSE;
4192 }
4193
4194 _bfd_aarch64_resize_stubs (htab);
4195 (*htab->layout_sections_again) ();
5421cc6e
MS		 4196 }
4197
a06ea964
NC		 4198 while (1)
4199 {
4200 bfd *input_bfd;
a06ea964 4201
9b9971aa
MS		 4202 for (input_bfd = info->input_bfds;
4203 input_bfd != NULL; input_bfd = input_bfd->link.next)
a06ea964
NC		 4204 {
4205 Elf_Internal_Shdr *symtab_hdr;
4206 asection *section;
4207 Elf_Internal_Sym *local_syms = NULL;
4208
4209 /* We'll need the symbol table in a second. */
4210 symtab_hdr = &elf_tdata (input_bfd)->symtab_hdr;
4211 if (symtab_hdr->sh_info == 0)
4212 continue;
4213
4214 /* Walk over each section attached to the input bfd. */
4215 for (section = input_bfd->sections;
4216 section != NULL; section = section->next)
4217 {
4218 Elf_Internal_Rela *internal_relocs, *irelaend, *irela;
4219
4220 /* If there aren't any relocs, then there's nothing more
4221 to do. */
4222 if ((section->flags & SEC_RELOC) == 0
4223 || section->reloc_count == 0
4224 || (section->flags & SEC_CODE) == 0)
4225 continue;
4226
4227 /* If this section is a link-once section that will be
4228 discarded, then don't create any stubs. */
4229 if (section->output_section == NULL
4230 || section->output_section->owner != output_bfd)
4231 continue;
4232
4233 /* Get the relocs. */
4234 internal_relocs
4235 = _bfd_elf_link_read_relocs (input_bfd, section, NULL,
4236 NULL, info->keep_memory);
4237 if (internal_relocs == NULL)
4238 goto error_ret_free_local;
4239
4240 /* Now examine each relocation. */
4241 irela = internal_relocs;
4242 irelaend = irela + section->reloc_count;
4243 for (; irela < irelaend; irela++)
4244 {
4245 unsigned int r_type, r_indx;
cec5225b
YZ		 4246 enum elf_aarch64_stub_type stub_type;
4247 struct elf_aarch64_stub_hash_entry *stub_entry;
a06ea964
NC		 4248 asection *sym_sec;
4249 bfd_vma sym_value;
4250 bfd_vma destination;
cec5225b 4251 struct elf_aarch64_link_hash_entry *hash;
a06ea964
NC		 4252 const char *sym_name;
4253 char *stub_name;
4254 const asection *id_sec;
4255 unsigned char st_type;
4256 bfd_size_type len;
4257
cec5225b
YZ		 4258 r_type = ELFNN_R_TYPE (irela->r_info);
4259 r_indx = ELFNN_R_SYM (irela->r_info);
a06ea964
NC		 4260
4261 if (r_type >= (unsigned int) R_AARCH64_end)
4262 {
4263 bfd_set_error (bfd_error_bad_value);
4264 error_ret_free_internal:
4265 if (elf_section_data (section)->relocs == NULL)
4266 free (internal_relocs);
4267 goto error_ret_free_local;
4268 }
4269
4270 /* Only look for stubs on unconditional branch and
4271 branch and link instructions. */
a6bb11b2
YZ		 4272 if (r_type != (unsigned int) AARCH64_R (CALL26)
4273 && r_type != (unsigned int) AARCH64_R (JUMP26))
a06ea964
NC		 4274 continue;
4275
4276 /* Now determine the call target, its name, value,
4277 section. */
4278 sym_sec = NULL;
4279 sym_value = 0;
4280 destination = 0;
4281 hash = NULL;
4282 sym_name = NULL;
4283 if (r_indx < symtab_hdr->sh_info)
4284 {
4285 /* It's a local symbol. */
4286 Elf_Internal_Sym *sym;
4287 Elf_Internal_Shdr *hdr;
4288
4289 if (local_syms == NULL)
4290 {
4291 local_syms
4292 = (Elf_Internal_Sym *) symtab_hdr->contents;
4293 if (local_syms == NULL)
4294 local_syms
4295 = bfd_elf_get_elf_syms (input_bfd, symtab_hdr,
4296 symtab_hdr->sh_info, 0,
4297 NULL, NULL, NULL);
4298 if (local_syms == NULL)
4299 goto error_ret_free_internal;
4300 }
4301
4302 sym = local_syms + r_indx;
4303 hdr = elf_elfsections (input_bfd)[sym->st_shndx];
4304 sym_sec = hdr->bfd_section;
4305 if (!sym_sec)
4306 /* This is an undefined symbol. It can never
4307 be resolved. */
4308 continue;
4309
4310 if (ELF_ST_TYPE (sym->st_info) != STT_SECTION)
4311 sym_value = sym->st_value;
4312 destination = (sym_value + irela->r_addend
4313 + sym_sec->output_offset
4314 + sym_sec->output_section->vma);
4315 st_type = ELF_ST_TYPE (sym->st_info);
4316 sym_name
4317 = bfd_elf_string_from_elf_section (input_bfd,
4318 symtab_hdr->sh_link,
4319 sym->st_name);
4320 }
4321 else
4322 {
4323 int e_indx;
4324
4325 e_indx = r_indx - symtab_hdr->sh_info;
cec5225b 4326 hash = ((struct elf_aarch64_link_hash_entry *)
a06ea964
NC		 4327 elf_sym_hashes (input_bfd)[e_indx]);
4328
4329 while (hash->root.root.type == bfd_link_hash_indirect
4330 || hash->root.root.type == bfd_link_hash_warning)
cec5225b 4331 hash = ((struct elf_aarch64_link_hash_entry *)
a06ea964
NC		 4332 hash->root.root.u.i.link);
4333
4334 if (hash->root.root.type == bfd_link_hash_defined
4335 || hash->root.root.type == bfd_link_hash_defweak)
4336 {
cec5225b
YZ		 4337 struct elf_aarch64_link_hash_table *globals =
4338 elf_aarch64_hash_table (info);
a06ea964
NC		 4339 sym_sec = hash->root.root.u.def.section;
4340 sym_value = hash->root.root.u.def.value;
4341 /* For a destination in a shared library,
4342 use the PLT stub as target address to
4343 decide whether a branch stub is
4344 needed. */
4345 if (globals->root.splt != NULL && hash != NULL
4346 && hash->root.plt.offset != (bfd_vma) - 1)
4347 {
4348 sym_sec = globals->root.splt;
4349 sym_value = hash->root.plt.offset;
4350 if (sym_sec->output_section != NULL)
4351 destination = (sym_value
4352 + sym_sec->output_offset
4353 +
4354 sym_sec->output_section->vma);
4355 }
4356 else if (sym_sec->output_section != NULL)
4357 destination = (sym_value + irela->r_addend
4358 + sym_sec->output_offset
4359 + sym_sec->output_section->vma);
4360 }
4361 else if (hash->root.root.type == bfd_link_hash_undefined
4362 || (hash->root.root.type
4363 == bfd_link_hash_undefweak))
4364 {
4365 /* For a shared library, use the PLT stub as
4366 target address to decide whether a long
4367 branch stub is needed.
4368 For absolute code, they cannot be handled. */
cec5225b
YZ		 4369 struct elf_aarch64_link_hash_table *globals =
4370 elf_aarch64_hash_table (info);
a06ea964
NC		 4371
4372 if (globals->root.splt != NULL && hash != NULL
4373 && hash->root.plt.offset != (bfd_vma) - 1)
4374 {
4375 sym_sec = globals->root.splt;
4376 sym_value = hash->root.plt.offset;
4377 if (sym_sec->output_section != NULL)
4378 destination = (sym_value
4379 + sym_sec->output_offset
4380 +
4381 sym_sec->output_section->vma);
4382 }
4383 else
4384 continue;
4385 }
4386 else
4387 {
4388 bfd_set_error (bfd_error_bad_value);
4389 goto error_ret_free_internal;
4390 }
4391 st_type = ELF_ST_TYPE (hash->root.type);
4392 sym_name = hash->root.root.root.string;
4393 }
4394
4395 /* Determine what (if any) linker stub is needed. */
9a228467
JW		 4396 stub_type = aarch64_type_of_stub (section, irela, sym_sec,
4397 st_type, destination);
a06ea964
NC		 4398 if (stub_type == aarch64_stub_none)
4399 continue;
4400
4401 /* Support for grouping stub sections. */
4402 id_sec = htab->stub_group[section->id].link_sec;
4403
4404 /* Get the name of this stub. */
cec5225b 4405 stub_name = elfNN_aarch64_stub_name (id_sec, sym_sec, hash,
a06ea964
NC		 4406 irela);
4407 if (!stub_name)
4408 goto error_ret_free_internal;
4409
4410 stub_entry =
4411 aarch64_stub_hash_lookup (&htab->stub_hash_table,
4412 stub_name, FALSE, FALSE);
4413 if (stub_entry != NULL)
4414 {
4415 /* The proper stub has already been created. */
4416 free (stub_name);
4417 continue;
4418 }
4419
ef857521
MS		 4420 stub_entry = _bfd_aarch64_add_stub_entry_in_group
4421 (stub_name, section, htab);
a06ea964
NC		 4422 if (stub_entry == NULL)
4423 {
4424 free (stub_name);
4425 goto error_ret_free_internal;
4426 }
4427
2f340668 4428 stub_entry->target_value = sym_value + irela->r_addend;
a06ea964
NC		 4429 stub_entry->target_section = sym_sec;
4430 stub_entry->stub_type = stub_type;
4431 stub_entry->h = hash;
4432 stub_entry->st_type = st_type;
4433
4434 if (sym_name == NULL)
4435 sym_name = "unnamed";
4436 len = sizeof (STUB_ENTRY_NAME) + strlen (sym_name);
4437 stub_entry->output_name = bfd_alloc (htab->stub_bfd, len);
4438 if (stub_entry->output_name == NULL)
4439 {
4440 free (stub_name);
4441 goto error_ret_free_internal;
4442 }
4443
4444 snprintf (stub_entry->output_name, len, STUB_ENTRY_NAME,
4445 sym_name);
4446
4447 stub_changed = TRUE;
4448 }
4449
4450 /* We're done with the internal relocs, free them. */
4451 if (elf_section_data (section)->relocs == NULL)
4452 free (internal_relocs);
4453 }
4454 }
4455
4456 if (!stub_changed)
4457 break;
4458
13f622ec 4459 _bfd_aarch64_resize_stubs (htab);
a06ea964
NC		 4460
4461 /* Ask the linker to do its stuff. */
4462 (*htab->layout_sections_again) ();
4463 stub_changed = FALSE;
4464 }
4465
4466 return TRUE;
4467
4468error_ret_free_local:
4469 return FALSE;
4470}
4471
4472/* Build all the stubs associated with the current output file. The
4473 stubs are kept in a hash table attached to the main linker hash
4474 table. We also set up the .plt entries for statically linked PIC
4475 functions here. This function is called via aarch64_elf_finish in the
4476 linker. */
4477
4478bfd_boolean
cec5225b 4479elfNN_aarch64_build_stubs (struct bfd_link_info *info)
a06ea964
NC		 4480{
4481 asection *stub_sec;
4482 struct bfd_hash_table *table;
cec5225b 4483 struct elf_aarch64_link_hash_table *htab;
a06ea964 4484
cec5225b 4485 htab = elf_aarch64_hash_table (info);
a06ea964
NC		 4486
4487 for (stub_sec = htab->stub_bfd->sections;
4488 stub_sec != NULL; stub_sec = stub_sec->next)
4489 {
4490 bfd_size_type size;
4491
4492 /* Ignore non-stub sections. */
4493 if (!strstr (stub_sec->name, STUB_SUFFIX))
4494 continue;
4495
4496 /* Allocate memory to hold the linker stubs. */
4497 size = stub_sec->size;
4498 stub_sec->contents = bfd_zalloc (htab->stub_bfd, size);
4499 if (stub_sec->contents == NULL && size != 0)
4500 return FALSE;
4501 stub_sec->size = 0;
61865519 4502
9a2ebffd
JW		 4503 /* Add a branch around the stub section, and a nop, to keep it 8 byte
4504 aligned, as long branch stubs contain a 64-bit address. */
61865519 4505 bfd_putl32 (0x14000000 | (size >> 2), stub_sec->contents);
9a2ebffd
JW		 4506 bfd_putl32 (INSN_NOP, stub_sec->contents + 4);
4507 stub_sec->size += 8;
a06ea964
NC		 4508 }
4509
4510 /* Build the stubs as directed by the stub hash table. */
4511 table = &htab->stub_hash_table;
4512 bfd_hash_traverse (table, aarch64_build_one_stub, info);
4513
4514 return TRUE;
4515}
4516
4517
4518/* Add an entry to the code/data map for section SEC. */
4519
4520static void
cec5225b 4521elfNN_aarch64_section_map_add (asection *sec, char type, bfd_vma vma)
a06ea964
NC		 4522{
4523 struct _aarch64_elf_section_data *sec_data =
cec5225b 4524 elf_aarch64_section_data (sec);
a06ea964
NC		 4525 unsigned int newidx;
4526
4527 if (sec_data->map == NULL)
4528 {
cec5225b 4529 sec_data->map = bfd_malloc (sizeof (elf_aarch64_section_map));
a06ea964
NC		 4530 sec_data->mapcount = 0;
4531 sec_data->mapsize = 1;
4532 }
4533
4534 newidx = sec_data->mapcount++;
4535
4536 if (sec_data->mapcount > sec_data->mapsize)
4537 {
4538 sec_data->mapsize *= 2;
4539 sec_data->map = bfd_realloc_or_free
cec5225b 4540 (sec_data->map, sec_data->mapsize * sizeof (elf_aarch64_section_map));
a06ea964
NC		 4541 }
4542
4543 if (sec_data->map)
4544 {
4545 sec_data->map[newidx].vma = vma;
4546 sec_data->map[newidx].type = type;
4547 }
4548}
4549
4550
4551/* Initialise maps of insn/data for input BFDs. */
4552void
cec5225b 4553bfd_elfNN_aarch64_init_maps (bfd *abfd)
a06ea964
NC		 4554{
4555 Elf_Internal_Sym *isymbuf;
4556 Elf_Internal_Shdr *hdr;
4557 unsigned int i, localsyms;
4558
4559 /* Make sure that we are dealing with an AArch64 elf binary. */
4560 if (!is_aarch64_elf (abfd))
4561 return;
4562
4563 if ((abfd->flags & DYNAMIC) != 0)
68fcca92 4564 return;
a06ea964
NC		 4565
4566 hdr = &elf_symtab_hdr (abfd);
4567 localsyms = hdr->sh_info;
4568
4569 /* Obtain a buffer full of symbols for this BFD. The hdr->sh_info field
4570 should contain the number of local symbols, which should come before any
4571 global symbols. Mapping symbols are always local. */
4572 isymbuf = bfd_elf_get_elf_syms (abfd, hdr, localsyms, 0, NULL, NULL, NULL);
4573
4574 /* No internal symbols read? Skip this BFD. */
4575 if (isymbuf == NULL)
4576 return;
4577
4578 for (i = 0; i < localsyms; i++)
4579 {
4580 Elf_Internal_Sym *isym = &isymbuf[i];
4581 asection *sec = bfd_section_from_elf_index (abfd, isym->st_shndx);
4582 const char *name;
4583
4584 if (sec != NULL && ELF_ST_BIND (isym->st_info) == STB_LOCAL)
4585 {
4586 name = bfd_elf_string_from_elf_section (abfd,
4587 hdr->sh_link,
4588 isym->st_name);
4589
4590 if (bfd_is_aarch64_special_symbol_name
4591 (name, BFD_AARCH64_SPECIAL_SYM_TYPE_MAP))
cec5225b 4592 elfNN_aarch64_section_map_add (sec, name[1], isym->st_value);
a06ea964
NC		 4593 }
4594 }
4595}
4596
4597/* Set option values needed during linking. */
4598void
cec5225b 4599bfd_elfNN_aarch64_set_options (struct bfd *output_bfd,
a06ea964
NC		 4600 struct bfd_link_info *link_info,
4601 int no_enum_warn,
68fcca92 4602 int no_wchar_warn, int pic_veneer,
4106101c 4603 int fix_erratum_835769,
1f56df9d
JW		 4604 int fix_erratum_843419,
4605 int no_apply_dynamic_relocs)
a06ea964 4606{
cec5225b 4607 struct elf_aarch64_link_hash_table *globals;
a06ea964 4608
cec5225b 4609 globals = elf_aarch64_hash_table (link_info);
a06ea964 4610 globals->pic_veneer = pic_veneer;
68fcca92 4611 globals->fix_erratum_835769 = fix_erratum_835769;
4106101c
MS		 4612 globals->fix_erratum_843419 = fix_erratum_843419;
4613 globals->fix_erratum_843419_adr = TRUE;
1f56df9d 4614 globals->no_apply_dynamic_relocs = no_apply_dynamic_relocs;
a06ea964
NC		 4615
4616 BFD_ASSERT (is_aarch64_elf (output_bfd));
4617 elf_aarch64_tdata (output_bfd)->no_enum_size_warning = no_enum_warn;
4618 elf_aarch64_tdata (output_bfd)->no_wchar_size_warning = no_wchar_warn;
4619}
4620
a06ea964
NC		 4621static bfd_vma
4622aarch64_calculate_got_entry_vma (struct elf_link_hash_entry *h,
cec5225b 4623 struct elf_aarch64_link_hash_table
a06ea964
NC		 4624 *globals, struct bfd_link_info *info,
4625 bfd_vma value, bfd *output_bfd,
4626 bfd_boolean *unresolved_reloc_p)
4627{
4628 bfd_vma off = (bfd_vma) - 1;
4629 asection *basegot = globals->root.sgot;
4630 bfd_boolean dyn = globals->root.dynamic_sections_created;
4631
4632 if (h != NULL)
4633 {
a6bb11b2 4634 BFD_ASSERT (basegot != NULL);
a06ea964
NC		 4635 off = h->got.offset;
4636 BFD_ASSERT (off != (bfd_vma) - 1);
0e1862bb
L		 4637 if (!WILL_CALL_FINISH_DYNAMIC_SYMBOL (dyn, bfd_link_pic (info), h)
4638 || (bfd_link_pic (info)
a06ea964
NC		 4639 && SYMBOL_REFERENCES_LOCAL (info, h))
4640 || (ELF_ST_VISIBILITY (h->other)
4641 && h->root.type == bfd_link_hash_undefweak))
4642 {
4643 /* This is actually a static link, or it is a -Bsymbolic link
4644 and the symbol is defined locally. We must initialize this
4645 entry in the global offset table. Since the offset must
a6bb11b2
YZ		 4646 always be a multiple of 8 (4 in the case of ILP32), we use
4647 the least significant bit to record whether we have
4648 initialized it already.
a06ea964
NC		 4649 When doing a dynamic link, we create a .rel(a).got relocation
4650 entry to initialize the value. This is done in the
4651 finish_dynamic_symbol routine. */
4652 if ((off & 1) != 0)
4653 off &= ~1;
4654 else
4655 {
cec5225b 4656 bfd_put_NN (output_bfd, value, basegot->contents + off);
a06ea964
NC		 4657 h->got.offset |= 1;
4658 }
4659 }
4660 else
4661 *unresolved_reloc_p = FALSE;
4662
4663 off = off + basegot->output_section->vma + basegot->output_offset;
4664 }
4665
4666 return off;
4667}
4668
4669/* Change R_TYPE to a more efficient access model where possible,
4670 return the new reloc type. */
4671
a6bb11b2
YZ		 4672static bfd_reloc_code_real_type
4673aarch64_tls_transition_without_check (bfd_reloc_code_real_type r_type,
a06ea964
NC		 4674 struct elf_link_hash_entry *h)
4675{
4676 bfd_boolean is_local = h == NULL;
a6bb11b2 4677
a06ea964
NC		 4678 switch (r_type)
4679 {
a6bb11b2 4680 case BFD_RELOC_AARCH64_TLSDESC_ADR_PAGE21:
ce336788 4681 case BFD_RELOC_AARCH64_TLSGD_ADR_PAGE21:
a6bb11b2
YZ		 4682 return (is_local
4683 ? BFD_RELOC_AARCH64_TLSLE_MOVW_TPREL_G1
4684 : BFD_RELOC_AARCH64_TLSIE_ADR_GOTTPREL_PAGE21);
4685
389b8029
MS		 4686 case BFD_RELOC_AARCH64_TLSDESC_ADR_PREL21:
4687 return (is_local
4688 ? BFD_RELOC_AARCH64_TLSLE_MOVW_TPREL_G0_NC
4689 : r_type);
4690
1ada945d
MS		 4691 case BFD_RELOC_AARCH64_TLSDESC_LD_PREL19:
4692 return (is_local
4693 ? BFD_RELOC_AARCH64_TLSLE_MOVW_TPREL_G1
4694 : BFD_RELOC_AARCH64_TLSIE_LD_GOTTPREL_PREL19);
4695
0484b454
RL		 4696 case BFD_RELOC_AARCH64_TLSDESC_LDR:
4697 return (is_local
4698 ? BFD_RELOC_AARCH64_TLSLE_MOVW_TPREL_G0_NC
4699 : BFD_RELOC_AARCH64_NONE);
4700
4701 case BFD_RELOC_AARCH64_TLSDESC_OFF_G0_NC:
4702 return (is_local
4703 ? BFD_RELOC_AARCH64_TLSLE_MOVW_TPREL_G1_NC
4704 : BFD_RELOC_AARCH64_TLSIE_MOVW_GOTTPREL_G0_NC);
4705
4706 case BFD_RELOC_AARCH64_TLSDESC_OFF_G1:
4707 return (is_local
4708 ? BFD_RELOC_AARCH64_TLSLE_MOVW_TPREL_G2
4709 : BFD_RELOC_AARCH64_TLSIE_MOVW_GOTTPREL_G1);
4710
a6bb11b2 4711 case BFD_RELOC_AARCH64_TLSDESC_LDNN_LO12_NC:
ce336788 4712 case BFD_RELOC_AARCH64_TLSGD_ADD_LO12_NC:
a6bb11b2
YZ		 4713 return (is_local
4714 ? BFD_RELOC_AARCH64_TLSLE_MOVW_TPREL_G0_NC
4715 : BFD_RELOC_AARCH64_TLSIE_LDNN_GOTTPREL_LO12_NC);
4716
4717 case BFD_RELOC_AARCH64_TLSIE_ADR_GOTTPREL_PAGE21:
4718 return is_local ? BFD_RELOC_AARCH64_TLSLE_MOVW_TPREL_G1 : r_type;
4719
4720 case BFD_RELOC_AARCH64_TLSIE_LDNN_GOTTPREL_LO12_NC:
4721 return is_local ? BFD_RELOC_AARCH64_TLSLE_MOVW_TPREL_G0_NC : r_type;
4722
043bf05a
MS		 4723 case BFD_RELOC_AARCH64_TLSIE_LD_GOTTPREL_PREL19:
4724 return r_type;
4725
3c12b054
MS		 4726 case BFD_RELOC_AARCH64_TLSGD_ADR_PREL21:
4727 return (is_local
4728 ? BFD_RELOC_AARCH64_TLSLE_ADD_TPREL_HI12
4729 : BFD_RELOC_AARCH64_TLSIE_LD_GOTTPREL_PREL19);
4730
0484b454 4731 case BFD_RELOC_AARCH64_TLSDESC_ADD:
f955cccf 4732 case BFD_RELOC_AARCH64_TLSDESC_ADD_LO12:
a6bb11b2 4733 case BFD_RELOC_AARCH64_TLSDESC_CALL:
a06ea964 4734 /* Instructions with these relocations will become NOPs. */
a6bb11b2
YZ		 4735 return BFD_RELOC_AARCH64_NONE;
4736
259364ad
JW		 4737 case BFD_RELOC_AARCH64_TLSLD_ADD_LO12_NC:
4738 case BFD_RELOC_AARCH64_TLSLD_ADR_PAGE21:
4739 case BFD_RELOC_AARCH64_TLSLD_ADR_PREL21:
4740 return is_local ? BFD_RELOC_AARCH64_NONE : r_type;
4741
ac734732
RL		 4742#if ARCH_SIZE == 64
4743 case BFD_RELOC_AARCH64_TLSGD_MOVW_G0_NC:
4744 return is_local
4745 ? BFD_RELOC_AARCH64_TLSLE_MOVW_TPREL_G1_NC
4746 : BFD_RELOC_AARCH64_TLSIE_MOVW_GOTTPREL_G0_NC;
4747
4748 case BFD_RELOC_AARCH64_TLSGD_MOVW_G1:
4749 return is_local
4750 ? BFD_RELOC_AARCH64_TLSLE_MOVW_TPREL_G2
4751 : BFD_RELOC_AARCH64_TLSIE_MOVW_GOTTPREL_G1;
4752#endif
4753
a6bb11b2
YZ		 4754 default:
4755 break;
a06ea964
NC		 4756 }
4757
4758 return r_type;
4759}
4760
4761static unsigned int
a6bb11b2 4762aarch64_reloc_got_type (bfd_reloc_code_real_type r_type)
a06ea964
NC		 4763{
4764 switch (r_type)
4765 {
a6bb11b2
YZ		 4766 case BFD_RELOC_AARCH64_ADR_GOT_PAGE:
4767 case BFD_RELOC_AARCH64_GOT_LD_PREL19:
7018c030 4768 case BFD_RELOC_AARCH64_LD32_GOTPAGE_LO14:
ce336788 4769 case BFD_RELOC_AARCH64_LD32_GOT_LO12_NC:
a2e1db00 4770 case BFD_RELOC_AARCH64_LD64_GOTOFF_LO15:
99ad26cb 4771 case BFD_RELOC_AARCH64_LD64_GOTPAGE_LO15:
ce336788 4772 case BFD_RELOC_AARCH64_LD64_GOT_LO12_NC:
dc8008f5 4773 case BFD_RELOC_AARCH64_MOVW_GOTOFF_G0_NC:
74a1bfe1 4774 case BFD_RELOC_AARCH64_MOVW_GOTOFF_G1:
a06ea964
NC		 4775 return GOT_NORMAL;
4776
ce336788 4777 case BFD_RELOC_AARCH64_TLSGD_ADD_LO12_NC:
a6bb11b2 4778 case BFD_RELOC_AARCH64_TLSGD_ADR_PAGE21:
3c12b054 4779 case BFD_RELOC_AARCH64_TLSGD_ADR_PREL21:
7ba7cfe4 4780 case BFD_RELOC_AARCH64_TLSGD_MOVW_G0_NC:
94facae3 4781 case BFD_RELOC_AARCH64_TLSGD_MOVW_G1:
73f925cc 4782 case BFD_RELOC_AARCH64_TLSLD_ADD_LO12_NC:
f69e4920 4783 case BFD_RELOC_AARCH64_TLSLD_ADR_PAGE21:
77a69ff8 4784 case BFD_RELOC_AARCH64_TLSLD_ADR_PREL21:
a06ea964
NC		 4785 return GOT_TLS_GD;
4786
0484b454 4787 case BFD_RELOC_AARCH64_TLSDESC_ADD:
f955cccf 4788 case BFD_RELOC_AARCH64_TLSDESC_ADD_LO12:
a6bb11b2 4789 case BFD_RELOC_AARCH64_TLSDESC_ADR_PAGE21:
389b8029 4790 case BFD_RELOC_AARCH64_TLSDESC_ADR_PREL21:
a6bb11b2 4791 case BFD_RELOC_AARCH64_TLSDESC_CALL:
a6bb11b2 4792 case BFD_RELOC_AARCH64_TLSDESC_LD32_LO12_NC:
f955cccf 4793 case BFD_RELOC_AARCH64_TLSDESC_LD64_LO12:
1ada945d 4794 case BFD_RELOC_AARCH64_TLSDESC_LD_PREL19:
0484b454
RL		 4795 case BFD_RELOC_AARCH64_TLSDESC_LDR:
4796 case BFD_RELOC_AARCH64_TLSDESC_OFF_G0_NC:
4797 case BFD_RELOC_AARCH64_TLSDESC_OFF_G1:
a06ea964
NC		 4798 return GOT_TLSDESC_GD;
4799
a6bb11b2 4800 case BFD_RELOC_AARCH64_TLSIE_ADR_GOTTPREL_PAGE21:
a6bb11b2 4801 case BFD_RELOC_AARCH64_TLSIE_LD32_GOTTPREL_LO12_NC:
ce336788 4802 case BFD_RELOC_AARCH64_TLSIE_LD64_GOTTPREL_LO12_NC:
043bf05a 4803 case BFD_RELOC_AARCH64_TLSIE_LD_GOTTPREL_PREL19:
3b957e5b
RL		 4804 case BFD_RELOC_AARCH64_TLSIE_MOVW_GOTTPREL_G0_NC:
4805 case BFD_RELOC_AARCH64_TLSIE_MOVW_GOTTPREL_G1:
a06ea964
NC		 4806 return GOT_TLS_IE;
4807
a6bb11b2
YZ		 4808 default:
4809 break;
a06ea964
NC		 4810 }
4811 return GOT_UNKNOWN;
4812}
4813
4814static bfd_boolean
4815aarch64_can_relax_tls (bfd *input_bfd,
4816 struct bfd_link_info *info,
a6bb11b2 4817 bfd_reloc_code_real_type r_type,
a06ea964
NC		 4818 struct elf_link_hash_entry *h,
4819 unsigned long r_symndx)
4820{
4821 unsigned int symbol_got_type;
4822 unsigned int reloc_got_type;
4823
9331eea1 4824 if (! IS_AARCH64_TLS_RELAX_RELOC (r_type))
a06ea964
NC		 4825 return FALSE;
4826
cec5225b 4827 symbol_got_type = elfNN_aarch64_symbol_got_type (h, input_bfd, r_symndx);
a06ea964
NC		 4828 reloc_got_type = aarch64_reloc_got_type (r_type);
4829
4830 if (symbol_got_type == GOT_TLS_IE && GOT_TLS_GD_ANY_P (reloc_got_type))
4831 return TRUE;
4832
6dda7875 4833 if (!bfd_link_executable (info))
a06ea964
NC		 4834 return FALSE;
4835
4836 if (h && h->root.type == bfd_link_hash_undefweak)
4837 return FALSE;
4838
4839 return TRUE;
4840}
4841
a6bb11b2
YZ		 4842/* Given the relocation code R_TYPE, return the relaxed bfd reloc
4843 enumerator. */
4844
4845static bfd_reloc_code_real_type
a06ea964
NC		 4846aarch64_tls_transition (bfd *input_bfd,
4847 struct bfd_link_info *info,
4848 unsigned int r_type,
4849 struct elf_link_hash_entry *h,
4850 unsigned long r_symndx)
4851{
a6bb11b2 4852 bfd_reloc_code_real_type bfd_r_type
0aa13fee 4853 = elfNN_aarch64_bfd_reloc_from_type (input_bfd, r_type);
a06ea964 4854
a6bb11b2
YZ		 4855 if (! aarch64_can_relax_tls (input_bfd, info, bfd_r_type, h, r_symndx))
4856 return bfd_r_type;
4857
4858 return aarch64_tls_transition_without_check (bfd_r_type, h);
a06ea964
NC		 4859}
4860
4861/* Return the base VMA address which should be subtracted from real addresses
a6bb11b2 4862 when resolving R_AARCH64_TLS_DTPREL relocation. */
a06ea964
NC		 4863
4864static bfd_vma
4865dtpoff_base (struct bfd_link_info *info)
4866{
4867 /* If tls_sec is NULL, we should have signalled an error already. */
4868 BFD_ASSERT (elf_hash_table (info)->tls_sec != NULL);
4869 return elf_hash_table (info)->tls_sec->vma;
4870}
4871
a06ea964
NC		 4872/* Return the base VMA address which should be subtracted from real addresses
4873 when resolving R_AARCH64_TLS_GOTTPREL64 relocations. */
4874
4875static bfd_vma
4876tpoff_base (struct bfd_link_info *info)
4877{
4878 struct elf_link_hash_table *htab = elf_hash_table (info);
4879
4880 /* If tls_sec is NULL, we should have signalled an error already. */
ac21917f 4881 BFD_ASSERT (htab->tls_sec != NULL);
a06ea964
NC		 4882
4883 bfd_vma base = align_power ((bfd_vma) TCB_SIZE,
4884 htab->tls_sec->alignment_power);
4885 return htab->tls_sec->vma - base;
4886}
4887
4888static bfd_vma *
4889symbol_got_offset_ref (bfd *input_bfd, struct elf_link_hash_entry *h,
4890 unsigned long r_symndx)
4891{
4892 /* Calculate the address of the GOT entry for symbol
4893 referred to in h. */
4894 if (h != NULL)
4895 return &h->got.offset;
4896 else
4897 {
4898 /* local symbol */
4899 struct elf_aarch64_local_symbol *l;
4900
cec5225b 4901 l = elf_aarch64_locals (input_bfd);
a06ea964
NC		 4902 return &l[r_symndx].got_offset;
4903 }
4904}
4905
4906static void
4907symbol_got_offset_mark (bfd *input_bfd, struct elf_link_hash_entry *h,
4908 unsigned long r_symndx)
4909{
4910 bfd_vma *p;
4911 p = symbol_got_offset_ref (input_bfd, h, r_symndx);
4912 *p |= 1;
4913}
4914
4915static int
4916symbol_got_offset_mark_p (bfd *input_bfd, struct elf_link_hash_entry *h,
4917 unsigned long r_symndx)
4918{
4919 bfd_vma value;
4920 value = * symbol_got_offset_ref (input_bfd, h, r_symndx);
4921 return value & 1;
4922}
4923
4924static bfd_vma
4925symbol_got_offset (bfd *input_bfd, struct elf_link_hash_entry *h,
4926 unsigned long r_symndx)
4927{
4928 bfd_vma value;
4929 value = * symbol_got_offset_ref (input_bfd, h, r_symndx);
4930 value &= ~1;
4931 return value;
4932}
4933
4934static bfd_vma *
4935symbol_tlsdesc_got_offset_ref (bfd *input_bfd, struct elf_link_hash_entry *h,
4936 unsigned long r_symndx)
4937{
4938 /* Calculate the address of the GOT entry for symbol
4939 referred to in h. */
4940 if (h != NULL)
4941 {
cec5225b
YZ		 4942 struct elf_aarch64_link_hash_entry *eh;
4943 eh = (struct elf_aarch64_link_hash_entry *) h;
a06ea964
NC		 4944 return &eh->tlsdesc_got_jump_table_offset;
4945 }
4946 else
4947 {
4948 /* local symbol */
4949 struct elf_aarch64_local_symbol *l;
4950
cec5225b 4951 l = elf_aarch64_locals (input_bfd);
a06ea964
NC		 4952 return &l[r_symndx].tlsdesc_got_jump_table_offset;
4953 }
4954}
4955
4956static void
4957symbol_tlsdesc_got_offset_mark (bfd *input_bfd, struct elf_link_hash_entry *h,
4958 unsigned long r_symndx)
4959{
4960 bfd_vma *p;
4961 p = symbol_tlsdesc_got_offset_ref (input_bfd, h, r_symndx);
4962 *p |= 1;
4963}
4964
4965static int
4966symbol_tlsdesc_got_offset_mark_p (bfd *input_bfd,
4967 struct elf_link_hash_entry *h,
4968 unsigned long r_symndx)
4969{
4970 bfd_vma value;
4971 value = * symbol_tlsdesc_got_offset_ref (input_bfd, h, r_symndx);
4972 return value & 1;
4973}
4974
4975static bfd_vma
4976symbol_tlsdesc_got_offset (bfd *input_bfd, struct elf_link_hash_entry *h,
4977 unsigned long r_symndx)
4978{
4979 bfd_vma value;
4980 value = * symbol_tlsdesc_got_offset_ref (input_bfd, h, r_symndx);
4981 value &= ~1;
4982 return value;
4983}
4984
68fcca92
JW		 4985/* Data for make_branch_to_erratum_835769_stub(). */
4986
4987struct erratum_835769_branch_to_stub_data
4988{
4106101c 4989 struct bfd_link_info *info;
68fcca92
JW		 4990 asection *output_section;
4991 bfd_byte *contents;
4992};
4993
4994/* Helper to insert branches to erratum 835769 stubs in the right
4995 places for a particular section. */
4996
4997static bfd_boolean
4998make_branch_to_erratum_835769_stub (struct bfd_hash_entry *gen_entry,
4999 void *in_arg)
5000{
5001 struct elf_aarch64_stub_hash_entry *stub_entry;
5002 struct erratum_835769_branch_to_stub_data *data;
5003 bfd_byte *contents;
5004 unsigned long branch_insn = 0;
5005 bfd_vma veneered_insn_loc, veneer_entry_loc;
5006 bfd_signed_vma branch_offset;
5007 unsigned int target;
5008 bfd *abfd;
5009
5010 stub_entry = (struct elf_aarch64_stub_hash_entry *) gen_entry;
5011 data = (struct erratum_835769_branch_to_stub_data *) in_arg;
5012
5013 if (stub_entry->target_section != data->output_section
5014 || stub_entry->stub_type != aarch64_stub_erratum_835769_veneer)
5015 return TRUE;
5016
5017 contents = data->contents;
5018 veneered_insn_loc = stub_entry->target_section->output_section->vma
5019 + stub_entry->target_section->output_offset
5020 + stub_entry->target_value;
5021 veneer_entry_loc = stub_entry->stub_sec->output_section->vma
5022 + stub_entry->stub_sec->output_offset
5023 + stub_entry->stub_offset;
5024 branch_offset = veneer_entry_loc - veneered_insn_loc;
5025
5026 abfd = stub_entry->target_section->owner;
5027 if (!aarch64_valid_branch_p (veneer_entry_loc, veneered_insn_loc))
4eca0228 5028 _bfd_error_handler
90b6238f 5029 (_("%pB: error: erratum 835769 stub out "
4eca0228 5030 "of range (input file too large)"), abfd);
68fcca92
JW		 5031
5032 target = stub_entry->target_value;
5033 branch_insn = 0x14000000;
5034 branch_offset >>= 2;
5035 branch_offset &= 0x3ffffff;
5036 branch_insn |= branch_offset;
5037 bfd_putl32 (branch_insn, &contents[target]);
5038
5039 return TRUE;
5040}
5041
4106101c
MS		 5042
5043static bfd_boolean
5044_bfd_aarch64_erratum_843419_branch_to_stub (struct bfd_hash_entry *gen_entry,
5045 void *in_arg)
5046{
5047 struct elf_aarch64_stub_hash_entry *stub_entry
5048 = (struct elf_aarch64_stub_hash_entry *) gen_entry;
5049 struct erratum_835769_branch_to_stub_data *data
5050 = (struct erratum_835769_branch_to_stub_data *) in_arg;
5051 struct bfd_link_info *info;
5052 struct elf_aarch64_link_hash_table *htab;
5053 bfd_byte *contents;
5054 asection *section;
5055 bfd *abfd;
5056 bfd_vma place;
5057 uint32_t insn;
5058
5059 info = data->info;
5060 contents = data->contents;
5061 section = data->output_section;
5062
5063 htab = elf_aarch64_hash_table (info);
5064
5065 if (stub_entry->target_section != section
5066 || stub_entry->stub_type != aarch64_stub_erratum_843419_veneer)
5067 return TRUE;
5068
5069 insn = bfd_getl32 (contents + stub_entry->target_value);
5070 bfd_putl32 (insn,
5071 stub_entry->stub_sec->contents + stub_entry->stub_offset);
5072
5073 place = (section->output_section->vma + section->output_offset
5074 + stub_entry->adrp_offset);
5075 insn = bfd_getl32 (contents + stub_entry->adrp_offset);
5076
5077 if ((insn & AARCH64_ADRP_OP_MASK) != AARCH64_ADRP_OP)
5078 abort ();
5079
5080 bfd_signed_vma imm =
5081 (_bfd_aarch64_sign_extend
5082 ((bfd_vma) _bfd_aarch64_decode_adrp_imm (insn) << 12, 33)
5083 - (place & 0xfff));
5084
5085 if (htab->fix_erratum_843419_adr
5086 && (imm >= AARCH64_MIN_ADRP_IMM && imm <= AARCH64_MAX_ADRP_IMM))
5087 {
5088 insn = (_bfd_aarch64_reencode_adr_imm (AARCH64_ADR_OP, imm)
5089 | AARCH64_RT (insn));
5090 bfd_putl32 (insn, contents + stub_entry->adrp_offset);
5091 }
5092 else
5093 {
5094 bfd_vma veneered_insn_loc;
5095 bfd_vma veneer_entry_loc;
5096 bfd_signed_vma branch_offset;
5097 uint32_t branch_insn;
5098
5099 veneered_insn_loc = stub_entry->target_section->output_section->vma
5100 + stub_entry->target_section->output_offset
5101 + stub_entry->target_value;
5102 veneer_entry_loc = stub_entry->stub_sec->output_section->vma
5103 + stub_entry->stub_sec->output_offset
5104 + stub_entry->stub_offset;
5105 branch_offset = veneer_entry_loc - veneered_insn_loc;
5106
5107 abfd = stub_entry->target_section->owner;
5108 if (!aarch64_valid_branch_p (veneer_entry_loc, veneered_insn_loc))
4eca0228 5109 _bfd_error_handler
90b6238f 5110 (_("%pB: error: erratum 843419 stub out "
4106101c
MS		 5111 "of range (input file too large)"), abfd);
5112
5113 branch_insn = 0x14000000;
5114 branch_offset >>= 2;
5115 branch_offset &= 0x3ffffff;
5116 branch_insn |= branch_offset;
5117 bfd_putl32 (branch_insn, contents + stub_entry->target_value);
5118 }
5119 return TRUE;
5120}
5121
5122
68fcca92
JW		 5123static bfd_boolean
5124elfNN_aarch64_write_section (bfd *output_bfd ATTRIBUTE_UNUSED,
5125 struct bfd_link_info *link_info,
5126 asection *sec,
5127 bfd_byte *contents)
5128
5129{
5130 struct elf_aarch64_link_hash_table *globals =
f872121a 5131 elf_aarch64_hash_table (link_info);
68fcca92
JW		 5132
5133 if (globals == NULL)
5134 return FALSE;
5135
5136 /* Fix code to point to erratum 835769 stubs. */
5137 if (globals->fix_erratum_835769)
5138 {
5139 struct erratum_835769_branch_to_stub_data data;
5140
4106101c 5141 data.info = link_info;
68fcca92
JW		 5142 data.output_section = sec;
5143 data.contents = contents;
5144 bfd_hash_traverse (&globals->stub_hash_table,
5145 make_branch_to_erratum_835769_stub, &data);
5146 }
5147
4106101c
MS		 5148 if (globals->fix_erratum_843419)
5149 {
5150 struct erratum_835769_branch_to_stub_data data;
5151
5152 data.info = link_info;
5153 data.output_section = sec;
5154 data.contents = contents;
5155 bfd_hash_traverse (&globals->stub_hash_table,
5156 _bfd_aarch64_erratum_843419_branch_to_stub, &data);
5157 }
5158
68fcca92
JW		 5159 return FALSE;
5160}
5161
2aff25ba
JW		 5162/* Return TRUE if RELOC is a relocation against the base of GOT table. */
5163
5164static bfd_boolean
5165aarch64_relocation_aginst_gp_p (bfd_reloc_code_real_type reloc)
5166{
5167 return (reloc == BFD_RELOC_AARCH64_LD32_GOTPAGE_LO14
5168 || reloc == BFD_RELOC_AARCH64_LD64_GOTPAGE_LO15
5169 || reloc == BFD_RELOC_AARCH64_LD64_GOTOFF_LO15
5170 || reloc == BFD_RELOC_AARCH64_MOVW_GOTOFF_G0_NC
5171 || reloc == BFD_RELOC_AARCH64_MOVW_GOTOFF_G1);
5172}
5173
4e7fbb34
JW		 5174/* Perform a relocation as part of a final link. The input relocation type
5175 should be TLS relaxed. */
5176
a06ea964 5177static bfd_reloc_status_type
cec5225b 5178elfNN_aarch64_final_link_relocate (reloc_howto_type *howto,
a06ea964
NC		 5179 bfd *input_bfd,
5180 bfd *output_bfd,
5181 asection *input_section,
5182 bfd_byte *contents,
5183 Elf_Internal_Rela *rel,
5184 bfd_vma value,
5185 struct bfd_link_info *info,
5186 asection *sym_sec,
5187 struct elf_link_hash_entry *h,
5188 bfd_boolean *unresolved_reloc_p,
5189 bfd_boolean save_addend,
1419bbe5
WN		 5190 bfd_vma *saved_addend,
5191 Elf_Internal_Sym *sym)
a06ea964 5192{
1419bbe5 5193 Elf_Internal_Shdr *symtab_hdr;
a06ea964 5194 unsigned int r_type = howto->type;
a6bb11b2
YZ		 5195 bfd_reloc_code_real_type bfd_r_type
5196 = elfNN_aarch64_bfd_reloc_from_howto (howto);
a06ea964
NC		 5197 unsigned long r_symndx;
5198 bfd_byte *hit_data = contents + rel->r_offset;
96d01d93 5199 bfd_vma place, off, got_entry_addr = 0;
a06ea964 5200 bfd_signed_vma signed_addend;
cec5225b 5201 struct elf_aarch64_link_hash_table *globals;
a06ea964 5202 bfd_boolean weak_undef_p;
ff07562f 5203 bfd_boolean relative_reloc;
b53b1bed 5204 asection *base_got;
ff07562f 5205 bfd_vma orig_value = value;
ddb7fd0f 5206 bfd_boolean resolved_to_zero;
0c1ded8d 5207 bfd_boolean abs_symbol_p;
a06ea964 5208
cec5225b 5209 globals = elf_aarch64_hash_table (info);
a06ea964 5210
1419bbe5
WN		 5211 symtab_hdr = &elf_symtab_hdr (input_bfd);
5212
a06ea964
NC		 5213 BFD_ASSERT (is_aarch64_elf (input_bfd));
5214
cec5225b 5215 r_symndx = ELFNN_R_SYM (rel->r_info);
a06ea964 5216
a06ea964
NC		 5217 place = input_section->output_section->vma
5218 + input_section->output_offset + rel->r_offset;
5219
5220 /* Get addend, accumulating the addend for consecutive relocs
5221 which refer to the same offset. */
5222 signed_addend = saved_addend ? *saved_addend : 0;
5223 signed_addend += rel->r_addend;
5224
5225 weak_undef_p = (h ? h->root.type == bfd_link_hash_undefweak
5226 : bfd_is_und_section (sym_sec));
0c1ded8d
RL		 5227 abs_symbol_p = (h !=NULL && h->root.type == bfd_link_hash_defined
5228 && bfd_is_abs_section (h->root.u.def.section));
5229
a6bb11b2 5230
1419bbe5
WN		 5231 /* Since STT_GNU_IFUNC symbol must go through PLT, we handle
5232 it here if it is defined in a non-shared object. */
5233 if (h != NULL
5234 && h->type == STT_GNU_IFUNC
5235 && h->def_regular)
5236 {
5237 asection *plt;
5238 const char *name;
99ad26cb 5239 bfd_vma addend = 0;
1419bbe5 5240
545bc2b3
SN		 5241 if ((input_section->flags & SEC_ALLOC) == 0)
5242 {
f657f8c4
NC		 5243 /* If this is a SHT_NOTE section without SHF_ALLOC, treat
5244 STT_GNU_IFUNC symbol as STT_FUNC. */
5245 if (elf_section_type (input_section) == SHT_NOTE)
5246 goto skip_ifunc;
5247
545bc2b3
SN		 5248 /* Dynamic relocs are not propagated for SEC_DEBUGGING
5249 sections because such sections are not SEC_ALLOC and
5250 thus ld.so will not process them. */
5251 if ((input_section->flags & SEC_DEBUGGING) != 0)
5252 return bfd_reloc_ok;
5253
5254 if (h->root.root.string)
5255 name = h->root.root.string;
5256 else
5257 name = bfd_elf_sym_name (input_bfd, symtab_hdr, sym, NULL);
5258 _bfd_error_handler
5259 /* xgettext:c-format */
2dcf00ce
AM		 5260 (_("%pB(%pA+%#" PRIx64 "): "
5261 "unresolvable %s relocation against symbol `%s'"),
5262 input_bfd, input_section, (uint64_t) rel->r_offset,
5263 howto->name, name);
545bc2b3 5264 bfd_set_error (bfd_error_bad_value);
1d75a8e2 5265 return bfd_reloc_notsupported;
545bc2b3
SN		 5266 }
5267 else if (h->plt.offset == (bfd_vma) -1)
5268 goto bad_ifunc_reloc;
1419bbe5
WN		 5269
5270 /* STT_GNU_IFUNC symbol must go through PLT. */
5271 plt = globals->root.splt ? globals->root.splt : globals->root.iplt;
5272 value = (plt->output_section->vma + plt->output_offset + h->plt.offset);
5273
5274 switch (bfd_r_type)
5275 {
5276 default:
545bc2b3 5277bad_ifunc_reloc:
1419bbe5
WN		 5278 if (h->root.root.string)
5279 name = h->root.root.string;
5280 else
5281 name = bfd_elf_sym_name (input_bfd, symtab_hdr, sym,
5282 NULL);
4eca0228 5283 _bfd_error_handler
695344c0 5284 /* xgettext:c-format */
871b3ab2 5285 (_("%pB: relocation %s against STT_GNU_IFUNC "
1419bbe5
WN		 5286 "symbol `%s' isn't handled by %s"), input_bfd,
5287 howto->name, name, __FUNCTION__);
5288 bfd_set_error (bfd_error_bad_value);
1d75a8e2 5289 return bfd_reloc_notsupported;
1419bbe5
WN		 5290
5291 case BFD_RELOC_AARCH64_NN:
5292 if (rel->r_addend != 0)
5293 {
5294 if (h->root.root.string)
5295 name = h->root.root.string;
5296 else
5297 name = bfd_elf_sym_name (input_bfd, symtab_hdr,
5298 sym, NULL);
4eca0228 5299 _bfd_error_handler
695344c0 5300 /* xgettext:c-format */
871b3ab2 5301 (_("%pB: relocation %s against STT_GNU_IFUNC "
2dcf00ce
AM		 5302 "symbol `%s' has non-zero addend: %" PRId64),
5303 input_bfd, howto->name, name, (int64_t) rel->r_addend);
1419bbe5 5304 bfd_set_error (bfd_error_bad_value);
1d75a8e2 5305 return bfd_reloc_notsupported;
1419bbe5
WN		 5306 }
5307
5308 /* Generate dynamic relocation only when there is a
5309 non-GOT reference in a shared object. */
0e1862bb 5310 if (bfd_link_pic (info) && h->non_got_ref)
1419bbe5
WN		 5311 {
5312 Elf_Internal_Rela outrel;
5313 asection *sreloc;
5314
5315 /* Need a dynamic relocation to get the real function
5316 address. */
5317 outrel.r_offset = _bfd_elf_section_offset (output_bfd,
5318 info,
5319 input_section,
5320 rel->r_offset);
5321 if (outrel.r_offset == (bfd_vma) -1
5322 || outrel.r_offset == (bfd_vma) -2)
5323 abort ();
5324
5325 outrel.r_offset += (input_section->output_section->vma
5326 + input_section->output_offset);
5327
5328 if (h->dynindx == -1
5329 || h->forced_local
0e1862bb 5330 || bfd_link_executable (info))
1419bbe5
WN		 5331 {
5332 /* This symbol is resolved locally. */
5333 outrel.r_info = ELFNN_R_INFO (0, AARCH64_R (IRELATIVE));
5334 outrel.r_addend = (h->root.u.def.value
5335 + h->root.u.def.section->output_section->vma
5336 + h->root.u.def.section->output_offset);
5337 }
5338 else
5339 {
5340 outrel.r_info = ELFNN_R_INFO (h->dynindx, r_type);
5341 outrel.r_addend = 0;
5342 }
5343
5344 sreloc = globals->root.irelifunc;
5345 elf_append_rela (output_bfd, sreloc, &outrel);
5346
5347 /* If this reloc is against an external symbol, we
5348 do not want to fiddle with the addend. Otherwise,
5349 we need to include the symbol value so that it
5350 becomes an addend for the dynamic reloc. For an
5351 internal symbol, we have updated addend. */
5352 return bfd_reloc_ok;
5353 }
5354 /* FALLTHROUGH */
1419bbe5 5355 case BFD_RELOC_AARCH64_CALL26:
ce336788 5356 case BFD_RELOC_AARCH64_JUMP26:
1419bbe5
WN		 5357 value = _bfd_aarch64_elf_resolve_relocation (bfd_r_type, place, value,
5358 signed_addend,
5359 weak_undef_p);
5360 return _bfd_aarch64_elf_put_addend (input_bfd, hit_data, bfd_r_type,
5361 howto, value);
1419bbe5
WN		 5362 case BFD_RELOC_AARCH64_ADR_GOT_PAGE:
5363 case BFD_RELOC_AARCH64_GOT_LD_PREL19:
7018c030 5364 case BFD_RELOC_AARCH64_LD32_GOTPAGE_LO14:
ce336788 5365 case BFD_RELOC_AARCH64_LD32_GOT_LO12_NC:
99ad26cb 5366 case BFD_RELOC_AARCH64_LD64_GOTPAGE_LO15:
dc8008f5 5367 case BFD_RELOC_AARCH64_MOVW_GOTOFF_G0_NC:
74a1bfe1 5368 case BFD_RELOC_AARCH64_MOVW_GOTOFF_G1:
a2e1db00 5369 case BFD_RELOC_AARCH64_LD64_GOTOFF_LO15:
ce336788 5370 case BFD_RELOC_AARCH64_LD64_GOT_LO12_NC:
1419bbe5
WN		 5371 base_got = globals->root.sgot;
5372 off = h->got.offset;
5373
5374 if (base_got == NULL)
5375 abort ();
5376
5377 if (off == (bfd_vma) -1)
5378 {
5379 bfd_vma plt_index;
5380
5381 /* We can't use h->got.offset here to save state, or
5382 even just remember the offset, as finish_dynamic_symbol
5383 would use that as offset into .got. */
5384
5385 if (globals->root.splt != NULL)
5386 {
b1ee0cc4
WN		 5387 plt_index = ((h->plt.offset - globals->plt_header_size) /
5388 globals->plt_entry_size);
1419bbe5
WN		 5389 off = (plt_index + 3) * GOT_ENTRY_SIZE;
5390 base_got = globals->root.sgotplt;
5391 }
5392 else
5393 {
5394 plt_index = h->plt.offset / globals->plt_entry_size;
5395 off = plt_index * GOT_ENTRY_SIZE;
5396 base_got = globals->root.igotplt;
5397 }
5398
5399 if (h->dynindx == -1
5400 || h->forced_local
5401 || info->symbolic)
5402 {
5403 /* This references the local definition. We must
5404 initialize this entry in the global offset table.
5405 Since the offset must always be a multiple of 8,
5406 we use the least significant bit to record
5407 whether we have initialized it already.
5408
5409 When doing a dynamic link, we create a .rela.got
5410 relocation entry to initialize the value. This
5411 is done in the finish_dynamic_symbol routine. */
5412 if ((off & 1) != 0)
5413 off &= ~1;
5414 else
5415 {
5416 bfd_put_NN (output_bfd, value,
5417 base_got->contents + off);
5418 /* Note that this is harmless as -1 | 1 still is -1. */
5419 h->got.offset |= 1;
5420 }
5421 }
5422 value = (base_got->output_section->vma
5423 + base_got->output_offset + off);
5424 }
5425 else
5426 value = aarch64_calculate_got_entry_vma (h, globals, info,
5427 value, output_bfd,
5428 unresolved_reloc_p);
a0becb89 5429
2aff25ba
JW		 5430 if (aarch64_relocation_aginst_gp_p (bfd_r_type))
5431 addend = (globals->root.sgot->output_section->vma
5432 + globals->root.sgot->output_offset);
a0becb89 5433
1419bbe5 5434 value = _bfd_aarch64_elf_resolve_relocation (bfd_r_type, place, value,
99ad26cb 5435 addend, weak_undef_p);
1419bbe5 5436 return _bfd_aarch64_elf_put_addend (input_bfd, hit_data, bfd_r_type, howto, value);
1419bbe5 5437 case BFD_RELOC_AARCH64_ADD_LO12:
ce336788 5438 case BFD_RELOC_AARCH64_ADR_HI21_PCREL:
1419bbe5
WN		 5439 break;
5440 }
5441 }
5442
f657f8c4 5443 skip_ifunc:
ddb7fd0f
L		 5444 resolved_to_zero = (h != NULL
5445 && UNDEFWEAK_NO_DYNAMIC_RELOC (info, h));
5446
a6bb11b2 5447 switch (bfd_r_type)
a06ea964 5448 {
a6bb11b2 5449 case BFD_RELOC_AARCH64_NONE:
0484b454 5450 case BFD_RELOC_AARCH64_TLSDESC_ADD:
a6bb11b2 5451 case BFD_RELOC_AARCH64_TLSDESC_CALL:
0484b454 5452 case BFD_RELOC_AARCH64_TLSDESC_LDR:
a06ea964
NC		 5453 *unresolved_reloc_p = FALSE;
5454 return bfd_reloc_ok;
5455
a6bb11b2 5456 case BFD_RELOC_AARCH64_NN:
a06ea964
NC		 5457
5458 /* When generating a shared object or relocatable executable, these
07d6d2b8
AM		 5459 relocations are copied into the output file to be resolved at
5460 run time. */
6353d82b
JW		 5461 if (((bfd_link_pic (info)
5462 || globals->root.is_relocatable_executable)
5463 && (input_section->flags & SEC_ALLOC)
5464 && (h == NULL
ddb7fd0f
L		 5465 || (ELF_ST_VISIBILITY (h->other) == STV_DEFAULT
5466 && !resolved_to_zero)
6353d82b
JW		 5467 || h->root.type != bfd_link_hash_undefweak))
5468 /* Or we are creating an executable, we may need to keep relocations
5469 for symbols satisfied by a dynamic library if we manage to avoid
5470 copy relocs for the symbol. */
5471 || (ELIMINATE_COPY_RELOCS
5472 && !bfd_link_pic (info)
5473 && h != NULL
5474 && (input_section->flags & SEC_ALLOC)
5475 && h->dynindx != -1
5476 && !h->non_got_ref
5477 && ((h->def_dynamic
5478 && !h->def_regular)
5479 || h->root.type == bfd_link_hash_undefweak
5480 || h->root.type == bfd_link_hash_undefined)))
a06ea964
NC		 5481 {
5482 Elf_Internal_Rela outrel;
5483 bfd_byte *loc;
5484 bfd_boolean skip, relocate;
5485 asection *sreloc;
5486
5487 *unresolved_reloc_p = FALSE;
5488
a06ea964
NC		 5489 skip = FALSE;
5490 relocate = FALSE;
5491
5492 outrel.r_addend = signed_addend;
5493 outrel.r_offset =
5494 _bfd_elf_section_offset (output_bfd, info, input_section,
5495 rel->r_offset);
5496 if (outrel.r_offset == (bfd_vma) - 1)
5497 skip = TRUE;
5498 else if (outrel.r_offset == (bfd_vma) - 2)
5499 {
5500 skip = TRUE;
5501 relocate = TRUE;
5502 }
0c1ded8d
RL		 5503 else if (abs_symbol_p)
5504 {
5505 /* Local absolute symbol. */
5506 skip = (h->forced_local || (h->dynindx == -1));
5507 relocate = skip;
5508 }
a06ea964
NC		 5509
5510 outrel.r_offset += (input_section->output_section->vma
5511 + input_section->output_offset);
5512
5513 if (skip)
5514 memset (&outrel, 0, sizeof outrel);
5515 else if (h != NULL
5516 && h->dynindx != -1
0e1862bb 5517 && (!bfd_link_pic (info)
0c1ded8d 5518 || !(bfd_link_pie (info) || SYMBOLIC_BIND (info, h))
0e1862bb 5519 || !h->def_regular))
cec5225b 5520 outrel.r_info = ELFNN_R_INFO (h->dynindx, r_type);
a06ea964
NC		 5521 else
5522 {
5523 int symbol;
5524
5525 /* On SVR4-ish systems, the dynamic loader cannot
5526 relocate the text and data segments independently,
5527 so the symbol does not matter. */
5528 symbol = 0;
1f56df9d 5529 relocate = globals->no_apply_dynamic_relocs ? FALSE : TRUE;
a6bb11b2 5530 outrel.r_info = ELFNN_R_INFO (symbol, AARCH64_R (RELATIVE));
a06ea964
NC		 5531 outrel.r_addend += value;
5532 }
5533
1419bbe5
WN		 5534 sreloc = elf_section_data (input_section)->sreloc;
5535 if (sreloc == NULL || sreloc->contents == NULL)
5536 return bfd_reloc_notsupported;
5537
5538 loc = sreloc->contents + sreloc->reloc_count++ * RELOC_SIZE (globals);
cec5225b 5539 bfd_elfNN_swap_reloca_out (output_bfd, &outrel, loc);
a06ea964 5540
1419bbe5 5541 if (sreloc->reloc_count * RELOC_SIZE (globals) > sreloc->size)
a06ea964
NC		 5542 {
5543 /* Sanity to check that we have previously allocated
5544 sufficient space in the relocation section for the
5545 number of relocations we actually want to emit. */
5546 abort ();
5547 }
5548
5549 /* If this reloc is against an external symbol, we do not want to
5550 fiddle with the addend. Otherwise, we need to include the symbol
5551 value so that it becomes an addend for the dynamic reloc. */
5552 if (!relocate)
5553 return bfd_reloc_ok;
5554
5555 return _bfd_final_link_relocate (howto, input_bfd, input_section,
5556 contents, rel->r_offset, value,
5557 signed_addend);
5558 }
5559 else
5560 value += signed_addend;
5561 break;
5562
a6bb11b2 5563 case BFD_RELOC_AARCH64_CALL26:
ce336788 5564 case BFD_RELOC_AARCH64_JUMP26:
a06ea964
NC		 5565 {
5566 asection *splt = globals->root.splt;
5567 bfd_boolean via_plt_p =
5568 splt != NULL && h != NULL && h->plt.offset != (bfd_vma) - 1;
5569
5570 /* A call to an undefined weak symbol is converted to a jump to
5571 the next instruction unless a PLT entry will be created.
5572 The jump to the next instruction is optimized as a NOP.
5573 Do the same for local undefined symbols. */
5574 if (weak_undef_p && ! via_plt_p)
5575 {
5576 bfd_putl32 (INSN_NOP, hit_data);
5577 return bfd_reloc_ok;
5578 }
5579
5580 /* If the call goes through a PLT entry, make sure to
5581 check distance to the right destination address. */
5582 if (via_plt_p)
07f9ddfe
JW		 5583 value = (splt->output_section->vma
5584 + splt->output_offset + h->plt.offset);
5585
5586 /* Check if a stub has to be inserted because the destination
5587 is too far away. */
5588 struct elf_aarch64_stub_hash_entry *stub_entry = NULL;
2f340668
JW		 5589
5590 /* If the branch destination is directed to plt stub, "value" will be
5591 the final destination, otherwise we should plus signed_addend, it may
5592 contain non-zero value, for example call to local function symbol
5593 which are turned into "sec_sym + sec_off", and sec_off is kept in
5594 signed_addend. */
5595 if (! aarch64_valid_branch_p (via_plt_p ? value : value + signed_addend,
5596 place))
07f9ddfe
JW		 5597 /* The target is out of reach, so redirect the branch to
5598 the local stub for this function. */
5599 stub_entry = elfNN_aarch64_get_stub_entry (input_section, sym_sec, h,
5600 rel, globals);
5601 if (stub_entry != NULL)
2f340668
JW		 5602 {
5603 value = (stub_entry->stub_offset
5604 + stub_entry->stub_sec->output_offset
5605 + stub_entry->stub_sec->output_section->vma);
5606
5607 /* We have redirected the destination to stub entry address,
5608 so ignore any addend record in the original rela entry. */
5609 signed_addend = 0;
5610 }
a06ea964 5611 }
caed7120
YZ		 5612 value = _bfd_aarch64_elf_resolve_relocation (bfd_r_type, place, value,
5613 signed_addend, weak_undef_p);
07f9ddfe 5614 *unresolved_reloc_p = FALSE;
a06ea964
NC		 5615 break;
5616
dcbd20eb
JW		 5617 case BFD_RELOC_AARCH64_16_PCREL:
5618 case BFD_RELOC_AARCH64_32_PCREL:
5619 case BFD_RELOC_AARCH64_64_PCREL:
ce336788
JW		 5620 case BFD_RELOC_AARCH64_ADR_HI21_NC_PCREL:
5621 case BFD_RELOC_AARCH64_ADR_HI21_PCREL:
5622 case BFD_RELOC_AARCH64_ADR_LO21_PCREL:
5623 case BFD_RELOC_AARCH64_LD_LO19_PCREL:
1daf502a
RL		 5624 case BFD_RELOC_AARCH64_MOVW_PREL_G0:
5625 case BFD_RELOC_AARCH64_MOVW_PREL_G0_NC:
5626 case BFD_RELOC_AARCH64_MOVW_PREL_G1:
5627 case BFD_RELOC_AARCH64_MOVW_PREL_G1_NC:
5628 case BFD_RELOC_AARCH64_MOVW_PREL_G2:
5629 case BFD_RELOC_AARCH64_MOVW_PREL_G2_NC:
5630 case BFD_RELOC_AARCH64_MOVW_PREL_G3:
0e1862bb 5631 if (bfd_link_pic (info)
dcbd20eb
JW		 5632 && (input_section->flags & SEC_ALLOC) != 0
5633 && (input_section->flags & SEC_READONLY) != 0
d68f1976 5634 && !SYMBOL_REFERENCES_LOCAL (info, h))
dcbd20eb
JW		 5635 {
5636 int howto_index = bfd_r_type - BFD_RELOC_AARCH64_RELOC_START;
5637
4eca0228 5638 _bfd_error_handler
695344c0 5639 /* xgettext:c-format */
871b3ab2 5640 (_("%pB: relocation %s against symbol `%s' which may bind "
d68f1976
JW		 5641 "externally can not be used when making a shared object; "
5642 "recompile with -fPIC"),
dcbd20eb
JW		 5643 input_bfd, elfNN_aarch64_howto_table[howto_index].name,
5644 h->root.root.string);
5645 bfd_set_error (bfd_error_bad_value);
1d75a8e2 5646 return bfd_reloc_notsupported;
dcbd20eb 5647 }
1a0670f3 5648 /* Fall through. */
dcbd20eb 5649
a6bb11b2 5650 case BFD_RELOC_AARCH64_16:
92d77487
RL		 5651#if ARCH_SIZE == 64
5652 case BFD_RELOC_AARCH64_32:
5653#endif
a6bb11b2 5654 case BFD_RELOC_AARCH64_ADD_LO12:
a6bb11b2 5655 case BFD_RELOC_AARCH64_BRANCH19:
ce336788 5656 case BFD_RELOC_AARCH64_LDST128_LO12:
a6bb11b2
YZ		 5657 case BFD_RELOC_AARCH64_LDST16_LO12:
5658 case BFD_RELOC_AARCH64_LDST32_LO12:
5659 case BFD_RELOC_AARCH64_LDST64_LO12:
ce336788 5660 case BFD_RELOC_AARCH64_LDST8_LO12:
a6bb11b2
YZ		 5661 case BFD_RELOC_AARCH64_MOVW_G0:
5662 case BFD_RELOC_AARCH64_MOVW_G0_NC:
ce336788 5663 case BFD_RELOC_AARCH64_MOVW_G0_S:
a6bb11b2
YZ		 5664 case BFD_RELOC_AARCH64_MOVW_G1:
5665 case BFD_RELOC_AARCH64_MOVW_G1_NC:
ce336788 5666 case BFD_RELOC_AARCH64_MOVW_G1_S:
a6bb11b2
YZ		 5667 case BFD_RELOC_AARCH64_MOVW_G2:
5668 case BFD_RELOC_AARCH64_MOVW_G2_NC:
ce336788 5669 case BFD_RELOC_AARCH64_MOVW_G2_S:
a6bb11b2 5670 case BFD_RELOC_AARCH64_MOVW_G3:
a6bb11b2 5671 case BFD_RELOC_AARCH64_TSTBR14:
caed7120
YZ		 5672 value = _bfd_aarch64_elf_resolve_relocation (bfd_r_type, place, value,
5673 signed_addend, weak_undef_p);
a06ea964
NC		 5674 break;
5675
a6bb11b2
YZ		 5676 case BFD_RELOC_AARCH64_ADR_GOT_PAGE:
5677 case BFD_RELOC_AARCH64_GOT_LD_PREL19:
7018c030 5678 case BFD_RELOC_AARCH64_LD32_GOTPAGE_LO14:
ce336788 5679 case BFD_RELOC_AARCH64_LD32_GOT_LO12_NC:
99ad26cb 5680 case BFD_RELOC_AARCH64_LD64_GOTPAGE_LO15:
ce336788 5681 case BFD_RELOC_AARCH64_LD64_GOT_LO12_NC:
2aff25ba
JW		 5682 case BFD_RELOC_AARCH64_LD64_GOTOFF_LO15:
5683 case BFD_RELOC_AARCH64_MOVW_GOTOFF_G0_NC:
5684 case BFD_RELOC_AARCH64_MOVW_GOTOFF_G1:
a06ea964
NC		 5685 if (globals->root.sgot == NULL)
5686 BFD_ASSERT (h != NULL);
5687
ff07562f 5688 relative_reloc = FALSE;
a06ea964
NC		 5689 if (h != NULL)
5690 {
99ad26cb 5691 bfd_vma addend = 0;
ff07562f
JW		 5692
5693 /* If a symbol is not dynamic and is not undefined weak, bind it
5694 locally and generate a RELATIVE relocation under PIC mode.
5695
5696 NOTE: one symbol may be referenced by several relocations, we
5697 should only generate one RELATIVE relocation for that symbol.
5698 Therefore, check GOT offset mark first. */
5699 if (h->dynindx == -1
5700 && !h->forced_local
5701 && h->root.type != bfd_link_hash_undefweak
5702 && bfd_link_pic (info)
5703 && !symbol_got_offset_mark_p (input_bfd, h, r_symndx))
5704 relative_reloc = TRUE;
5705
a06ea964
NC		 5706 value = aarch64_calculate_got_entry_vma (h, globals, info, value,
5707 output_bfd,
5708 unresolved_reloc_p);
ff07562f
JW		 5709 /* Record the GOT entry address which will be used when generating
5710 RELATIVE relocation. */
5711 if (relative_reloc)
5712 got_entry_addr = value;
5713
2aff25ba 5714 if (aarch64_relocation_aginst_gp_p (bfd_r_type))
99ad26cb
JW		 5715 addend = (globals->root.sgot->output_section->vma
5716 + globals->root.sgot->output_offset);
caed7120 5717 value = _bfd_aarch64_elf_resolve_relocation (bfd_r_type, place, value,
99ad26cb 5718 addend, weak_undef_p);
a06ea964 5719 }
b53b1bed
JW		 5720 else
5721 {
99ad26cb 5722 bfd_vma addend = 0;
b53b1bed
JW		 5723 struct elf_aarch64_local_symbol *locals
5724 = elf_aarch64_locals (input_bfd);
5725
5726 if (locals == NULL)
5727 {
5728 int howto_index = bfd_r_type - BFD_RELOC_AARCH64_RELOC_START;
4eca0228 5729 _bfd_error_handler
695344c0 5730 /* xgettext:c-format */
90b6238f 5731 (_("%pB: local symbol descriptor table be NULL when applying "
b53b1bed
JW		 5732 "relocation %s against local symbol"),
5733 input_bfd, elfNN_aarch64_howto_table[howto_index].name);
5734 abort ();
5735 }
5736
5737 off = symbol_got_offset (input_bfd, h, r_symndx);
5738 base_got = globals->root.sgot;
ff07562f
JW		 5739 got_entry_addr = (base_got->output_section->vma
5740 + base_got->output_offset + off);
b53b1bed
JW		 5741
5742 if (!symbol_got_offset_mark_p (input_bfd, h, r_symndx))
5743 {
5744 bfd_put_64 (output_bfd, value, base_got->contents + off);
5745
ff07562f
JW		 5746 /* For local symbol, we have done absolute relocation in static
5747 linking stage. While for shared library, we need to update the
5748 content of GOT entry according to the shared object's runtime
5749 base address. So, we need to generate a R_AARCH64_RELATIVE reloc
5750 for dynamic linker. */
0e1862bb 5751 if (bfd_link_pic (info))
ff07562f 5752 relative_reloc = TRUE;
b53b1bed
JW		 5753
5754 symbol_got_offset_mark (input_bfd, h, r_symndx);
5755 }
5756
5757 /* Update the relocation value to GOT entry addr as we have transformed
5758 the direct data access into indirect data access through GOT. */
5759 value = got_entry_addr;
99ad26cb 5760
2aff25ba 5761 if (aarch64_relocation_aginst_gp_p (bfd_r_type))
99ad26cb
JW		 5762 addend = base_got->output_section->vma + base_got->output_offset;
5763
5764 value = _bfd_aarch64_elf_resolve_relocation (bfd_r_type, place, value,
5765 addend, weak_undef_p);
b53b1bed 5766 }
ff07562f
JW		 5767
5768 if (relative_reloc)
5769 {
5770 asection *s;
5771 Elf_Internal_Rela outrel;
5772
5773 s = globals->root.srelgot;
5774 if (s == NULL)
5775 abort ();
5776
5777 outrel.r_offset = got_entry_addr;
5778 outrel.r_info = ELFNN_R_INFO (0, AARCH64_R (RELATIVE));
5779 outrel.r_addend = orig_value;
5780 elf_append_rela (output_bfd, s, &outrel);
5781 }
a2e1db00
RL		 5782 break;
5783
ce336788 5784 case BFD_RELOC_AARCH64_TLSGD_ADD_LO12_NC:
a6bb11b2 5785 case BFD_RELOC_AARCH64_TLSGD_ADR_PAGE21:
3c12b054 5786 case BFD_RELOC_AARCH64_TLSGD_ADR_PREL21:
a6bb11b2 5787 case BFD_RELOC_AARCH64_TLSIE_ADR_GOTTPREL_PAGE21:
a6bb11b2 5788 case BFD_RELOC_AARCH64_TLSIE_LD32_GOTTPREL_LO12_NC:
ce336788 5789 case BFD_RELOC_AARCH64_TLSIE_LD64_GOTTPREL_LO12_NC:
043bf05a 5790 case BFD_RELOC_AARCH64_TLSIE_LD_GOTTPREL_PREL19:
73f925cc 5791 case BFD_RELOC_AARCH64_TLSLD_ADD_LO12_NC:
f69e4920 5792 case BFD_RELOC_AARCH64_TLSLD_ADR_PAGE21:
77a69ff8 5793 case BFD_RELOC_AARCH64_TLSLD_ADR_PREL21:
a06ea964
NC		 5794 if (globals->root.sgot == NULL)
5795 return bfd_reloc_notsupported;
5796
5797 value = (symbol_got_offset (input_bfd, h, r_symndx)
5798 + globals->root.sgot->output_section->vma
f44a1f8e 5799 + globals->root.sgot->output_offset);
a06ea964 5800
caed7120
YZ		 5801 value = _bfd_aarch64_elf_resolve_relocation (bfd_r_type, place, value,
5802 0, weak_undef_p);
a06ea964
NC		 5803 *unresolved_reloc_p = FALSE;
5804 break;
5805
7ba7cfe4 5806 case BFD_RELOC_AARCH64_TLSGD_MOVW_G0_NC:
94facae3 5807 case BFD_RELOC_AARCH64_TLSGD_MOVW_G1:
3b957e5b
RL		 5808 case BFD_RELOC_AARCH64_TLSIE_MOVW_GOTTPREL_G0_NC:
5809 case BFD_RELOC_AARCH64_TLSIE_MOVW_GOTTPREL_G1:
94facae3
RL		 5810 if (globals->root.sgot == NULL)
5811 return bfd_reloc_notsupported;
5812
5813 value = symbol_got_offset (input_bfd, h, r_symndx);
5814 value = _bfd_aarch64_elf_resolve_relocation (bfd_r_type, place, value,
5815 0, weak_undef_p);
5816 *unresolved_reloc_p = FALSE;
5817 break;
5818
6ffe9a1b 5819 case BFD_RELOC_AARCH64_TLSLD_ADD_DTPREL_HI12:
40fbed84 5820 case BFD_RELOC_AARCH64_TLSLD_ADD_DTPREL_LO12:
753999c1 5821 case BFD_RELOC_AARCH64_TLSLD_ADD_DTPREL_LO12_NC:
07c9aa07
JW		 5822 case BFD_RELOC_AARCH64_TLSLD_LDST16_DTPREL_LO12:
5823 case BFD_RELOC_AARCH64_TLSLD_LDST16_DTPREL_LO12_NC:
5824 case BFD_RELOC_AARCH64_TLSLD_LDST32_DTPREL_LO12:
5825 case BFD_RELOC_AARCH64_TLSLD_LDST32_DTPREL_LO12_NC:
5826 case BFD_RELOC_AARCH64_TLSLD_LDST64_DTPREL_LO12:
5827 case BFD_RELOC_AARCH64_TLSLD_LDST64_DTPREL_LO12_NC:
5828 case BFD_RELOC_AARCH64_TLSLD_LDST8_DTPREL_LO12:
5829 case BFD_RELOC_AARCH64_TLSLD_LDST8_DTPREL_LO12_NC:
6ffe9a1b
JW		 5830 case BFD_RELOC_AARCH64_TLSLD_MOVW_DTPREL_G0:
5831 case BFD_RELOC_AARCH64_TLSLD_MOVW_DTPREL_G0_NC:
5832 case BFD_RELOC_AARCH64_TLSLD_MOVW_DTPREL_G1:
5833 case BFD_RELOC_AARCH64_TLSLD_MOVW_DTPREL_G1_NC:
5834 case BFD_RELOC_AARCH64_TLSLD_MOVW_DTPREL_G2:
40fbed84
JW		 5835 value = _bfd_aarch64_elf_resolve_relocation (bfd_r_type, place, value,
5836 signed_addend - dtpoff_base (info),
5837 weak_undef_p);
5838 break;
5839
a6bb11b2
YZ		 5840 case BFD_RELOC_AARCH64_TLSLE_ADD_TPREL_HI12:
5841 case BFD_RELOC_AARCH64_TLSLE_ADD_TPREL_LO12:
5842 case BFD_RELOC_AARCH64_TLSLE_ADD_TPREL_LO12_NC:
e04ef022
RL		 5843 case BFD_RELOC_AARCH64_TLSLE_LDST16_TPREL_LO12:
5844 case BFD_RELOC_AARCH64_TLSLE_LDST16_TPREL_LO12_NC:
5845 case BFD_RELOC_AARCH64_TLSLE_LDST32_TPREL_LO12:
5846 case BFD_RELOC_AARCH64_TLSLE_LDST32_TPREL_LO12_NC:
5847 case BFD_RELOC_AARCH64_TLSLE_LDST64_TPREL_LO12:
5848 case BFD_RELOC_AARCH64_TLSLE_LDST64_TPREL_LO12_NC:
5849 case BFD_RELOC_AARCH64_TLSLE_LDST8_TPREL_LO12:
5850 case BFD_RELOC_AARCH64_TLSLE_LDST8_TPREL_LO12_NC:
a6bb11b2
YZ		 5851 case BFD_RELOC_AARCH64_TLSLE_MOVW_TPREL_G0:
5852 case BFD_RELOC_AARCH64_TLSLE_MOVW_TPREL_G0_NC:
5853 case BFD_RELOC_AARCH64_TLSLE_MOVW_TPREL_G1:
5854 case BFD_RELOC_AARCH64_TLSLE_MOVW_TPREL_G1_NC:
5855 case BFD_RELOC_AARCH64_TLSLE_MOVW_TPREL_G2:
caed7120
YZ		 5856 value = _bfd_aarch64_elf_resolve_relocation (bfd_r_type, place, value,
5857 signed_addend - tpoff_base (info),
5858 weak_undef_p);
a06ea964
NC		 5859 *unresolved_reloc_p = FALSE;
5860 break;
5861
f955cccf 5862 case BFD_RELOC_AARCH64_TLSDESC_ADD_LO12:
a6bb11b2 5863 case BFD_RELOC_AARCH64_TLSDESC_ADR_PAGE21:
389b8029 5864 case BFD_RELOC_AARCH64_TLSDESC_ADR_PREL21:
a6bb11b2 5865 case BFD_RELOC_AARCH64_TLSDESC_LD32_LO12_NC:
f955cccf 5866 case BFD_RELOC_AARCH64_TLSDESC_LD64_LO12:
1ada945d 5867 case BFD_RELOC_AARCH64_TLSDESC_LD_PREL19:
a06ea964
NC		 5868 if (globals->root.sgot == NULL)
5869 return bfd_reloc_notsupported;
a06ea964
NC		 5870 value = (symbol_tlsdesc_got_offset (input_bfd, h, r_symndx)
5871 + globals->root.sgotplt->output_section->vma
f44a1f8e 5872 + globals->root.sgotplt->output_offset
a06ea964
NC		 5873 + globals->sgotplt_jump_table_size);
5874
caed7120
YZ		 5875 value = _bfd_aarch64_elf_resolve_relocation (bfd_r_type, place, value,
5876 0, weak_undef_p);
a06ea964
NC		 5877 *unresolved_reloc_p = FALSE;
5878 break;
5879
0484b454
RL		 5880 case BFD_RELOC_AARCH64_TLSDESC_OFF_G0_NC:
5881 case BFD_RELOC_AARCH64_TLSDESC_OFF_G1:
5882 if (globals->root.sgot == NULL)
5883 return bfd_reloc_notsupported;
5884
5885 value = (symbol_tlsdesc_got_offset (input_bfd, h, r_symndx)
5886 + globals->root.sgotplt->output_section->vma
5887 + globals->root.sgotplt->output_offset
5888 + globals->sgotplt_jump_table_size);
5889
5890 value -= (globals->root.sgot->output_section->vma
5891 + globals->root.sgot->output_offset);
5892
5893 value = _bfd_aarch64_elf_resolve_relocation (bfd_r_type, place, value,
5894 0, weak_undef_p);
5895 *unresolved_reloc_p = FALSE;
5896 break;
5897
a06ea964
NC		 5898 default:
5899 return bfd_reloc_notsupported;
5900 }
5901
5902 if (saved_addend)
5903 *saved_addend = value;
5904
5905 /* Only apply the final relocation in a sequence. */
5906 if (save_addend)
5907 return bfd_reloc_continue;
5908
caed7120
YZ		 5909 return _bfd_aarch64_elf_put_addend (input_bfd, hit_data, bfd_r_type,
5910 howto, value);
a06ea964
NC		 5911}
5912
2d0ca824
YN		 5913/* LP64 and ILP32 operates on x- and w-registers respectively.
5914 Next definitions take into account the difference between
5915 corresponding machine codes. R means x-register if the target
5916 arch is LP64, and w-register if the target is ILP32. */
5917
5918#if ARCH_SIZE == 64
5919# define add_R0_R0 (0x91000000)
5920# define add_R0_R0_R1 (0x8b000020)
5921# define add_R0_R1 (0x91400020)
5922# define ldr_R0 (0x58000000)
5923# define ldr_R0_mask(i) (i & 0xffffffe0)
5924# define ldr_R0_x0 (0xf9400000)
5925# define ldr_hw_R0 (0xf2a00000)
5926# define movk_R0 (0xf2800000)
5927# define movz_R0 (0xd2a00000)
5928# define movz_hw_R0 (0xd2c00000)
5929#else /*ARCH_SIZE == 32 */
5930# define add_R0_R0 (0x11000000)
5931# define add_R0_R0_R1 (0x0b000020)
5932# define add_R0_R1 (0x11400020)
5933# define ldr_R0 (0x18000000)
5934# define ldr_R0_mask(i) (i & 0xbfffffe0)
5935# define ldr_R0_x0 (0xb9400000)
5936# define ldr_hw_R0 (0x72a00000)
5937# define movk_R0 (0x72800000)
5938# define movz_R0 (0x52a00000)
5939# define movz_hw_R0 (0x52c00000)
5940#endif
5941
a06ea964
NC		 5942/* Handle TLS relaxations. Relaxing is possible for symbols that use
5943 R_AARCH64_TLSDESC_ADR_{PAGE, LD64_LO12_NC, ADD_LO12_NC} during a static
5944 link.
5945
5946 Return bfd_reloc_ok if we're done, bfd_reloc_continue if the caller
5947 is to then call final_link_relocate. Return other values in the
5948 case of error. */
5949
5950static bfd_reloc_status_type
cec5225b 5951elfNN_aarch64_tls_relax (struct elf_aarch64_link_hash_table *globals,
a06ea964 5952 bfd *input_bfd, bfd_byte *contents,
06d2788c 5953 Elf_Internal_Rela *rel, struct elf_link_hash_entry *h)
a06ea964
NC		 5954{
5955 bfd_boolean is_local = h == NULL;
cec5225b 5956 unsigned int r_type = ELFNN_R_TYPE (rel->r_info);
a06ea964
NC		 5957 unsigned long insn;
5958
5959 BFD_ASSERT (globals && input_bfd && contents && rel);
5960
0aa13fee 5961 switch (elfNN_aarch64_bfd_reloc_from_type (input_bfd, r_type))
a06ea964 5962 {
a6bb11b2 5963 case BFD_RELOC_AARCH64_TLSDESC_ADR_PAGE21:
ce336788 5964 case BFD_RELOC_AARCH64_TLSGD_ADR_PAGE21:
a06ea964
NC		 5965 if (is_local)
5966 {
5967 /* GD->LE relaxation:
2d0ca824 5968 adrp x0, :tlsgd:var => movz R0, :tprel_g1:var
a06ea964 5969 or
2d0ca824
YN		 5970 adrp x0, :tlsdesc:var => movz R0, :tprel_g1:var
5971
5972 Where R is x for LP64, and w for ILP32. */
5973 bfd_putl32 (movz_R0, contents + rel->r_offset);
a06ea964
NC		 5974 return bfd_reloc_continue;
5975 }
5976 else
5977 {
5978 /* GD->IE relaxation:
5979 adrp x0, :tlsgd:var => adrp x0, :gottprel:var
5980 or
5981 adrp x0, :tlsdesc:var => adrp x0, :gottprel:var
5982 */
a06ea964
NC		 5983 return bfd_reloc_continue;
5984 }
5985
389b8029
MS		 5986 case BFD_RELOC_AARCH64_TLSDESC_ADR_PREL21:
5987 BFD_ASSERT (0);
5988 break;
5989
1ada945d
MS		 5990 case BFD_RELOC_AARCH64_TLSDESC_LD_PREL19:
5991 if (is_local)
5992 {
5993 /* Tiny TLSDESC->LE relaxation:
07d6d2b8
AM		 5994 ldr x1, :tlsdesc:var => movz R0, #:tprel_g1:var
5995 adr x0, :tlsdesc:var => movk R0, #:tprel_g0_nc:var
1ada945d 5996 .tlsdesccall var
07d6d2b8 5997 blr x1 => nop
2d0ca824
YN		 5998
5999 Where R is x for LP64, and w for ILP32. */
1ada945d
MS		 6000 BFD_ASSERT (ELFNN_R_TYPE (rel[1].r_info) == AARCH64_R (TLSDESC_ADR_PREL21));
6001 BFD_ASSERT (ELFNN_R_TYPE (rel[2].r_info) == AARCH64_R (TLSDESC_CALL));
6002
6003 rel[1].r_info = ELFNN_R_INFO (ELFNN_R_SYM (rel->r_info),
6004 AARCH64_R (TLSLE_MOVW_TPREL_G0_NC));
6005 rel[2].r_info = ELFNN_R_INFO (STN_UNDEF, R_AARCH64_NONE);
6006
2d0ca824
YN		 6007 bfd_putl32 (movz_R0, contents + rel->r_offset);
6008 bfd_putl32 (movk_R0, contents + rel->r_offset + 4);
1ada945d
MS		 6009 bfd_putl32 (INSN_NOP, contents + rel->r_offset + 8);
6010 return bfd_reloc_continue;
6011 }
6012 else
6013 {
6014 /* Tiny TLSDESC->IE relaxation:
07d6d2b8
AM		 6015 ldr x1, :tlsdesc:var => ldr x0, :gottprel:var
6016 adr x0, :tlsdesc:var => nop
1ada945d 6017 .tlsdesccall var
07d6d2b8 6018 blr x1 => nop
1ada945d
MS		 6019 */
6020 BFD_ASSERT (ELFNN_R_TYPE (rel[1].r_info) == AARCH64_R (TLSDESC_ADR_PREL21));
6021 BFD_ASSERT (ELFNN_R_TYPE (rel[2].r_info) == AARCH64_R (TLSDESC_CALL));
6022
6023 rel[1].r_info = ELFNN_R_INFO (STN_UNDEF, R_AARCH64_NONE);
6024 rel[2].r_info = ELFNN_R_INFO (STN_UNDEF, R_AARCH64_NONE);
6025
2d0ca824 6026 bfd_putl32 (ldr_R0, contents + rel->r_offset);
1ada945d
MS		 6027 bfd_putl32 (INSN_NOP, contents + rel->r_offset + 4);
6028 bfd_putl32 (INSN_NOP, contents + rel->r_offset + 8);
6029 return bfd_reloc_continue;
6030 }
6031
3c12b054
MS		 6032 case BFD_RELOC_AARCH64_TLSGD_ADR_PREL21:
6033 if (is_local)
6034 {
6035 /* Tiny GD->LE relaxation:
07d6d2b8
AM		 6036 adr x0, :tlsgd:var => mrs x1, tpidr_el0
6037 bl __tls_get_addr => add R0, R1, #:tprel_hi12:x, lsl #12
6038 nop => add R0, R0, #:tprel_lo12_nc:x
2d0ca824
YN		 6039
6040 Where R is x for LP64, and x for Ilp32. */
3c12b054
MS		 6041
6042 /* First kill the tls_get_addr reloc on the bl instruction. */
6043 BFD_ASSERT (rel->r_offset + 4 == rel[1].r_offset);
6044
6045 bfd_putl32 (0xd53bd041, contents + rel->r_offset + 0);
2d0ca824
YN		 6046 bfd_putl32 (add_R0_R1, contents + rel->r_offset + 4);
6047 bfd_putl32 (add_R0_R0, contents + rel->r_offset + 8);
3c12b054
MS		 6048
6049 rel[1].r_info = ELFNN_R_INFO (ELFNN_R_SYM (rel->r_info),
6050 AARCH64_R (TLSLE_ADD_TPREL_LO12_NC));
6051 rel[1].r_offset = rel->r_offset + 8;
6052
6053 /* Move the current relocation to the second instruction in
6054 the sequence. */
6055 rel->r_offset += 4;
6056 rel->r_info = ELFNN_R_INFO (ELFNN_R_SYM (rel->r_info),
6057 AARCH64_R (TLSLE_ADD_TPREL_HI12));
6058 return bfd_reloc_continue;
6059 }
6060 else
6061 {
6062 /* Tiny GD->IE relaxation:
07d6d2b8
AM		 6063 adr x0, :tlsgd:var => ldr R0, :gottprel:var
6064 bl __tls_get_addr => mrs x1, tpidr_el0
6065 nop => add R0, R0, R1
2d0ca824
YN		 6066
6067 Where R is x for LP64, and w for Ilp32. */
3c12b054
MS		 6068
6069 /* First kill the tls_get_addr reloc on the bl instruction. */
6070 BFD_ASSERT (rel->r_offset + 4 == rel[1].r_offset);
6071 rel[1].r_info = ELFNN_R_INFO (STN_UNDEF, R_AARCH64_NONE);
6072
2d0ca824 6073 bfd_putl32 (ldr_R0, contents + rel->r_offset);
3c12b054 6074 bfd_putl32 (0xd53bd041, contents + rel->r_offset + 4);
2d0ca824 6075 bfd_putl32 (add_R0_R0_R1, contents + rel->r_offset + 8);
3c12b054
MS		 6076 return bfd_reloc_continue;
6077 }
6078
ac734732
RL		 6079#if ARCH_SIZE == 64
6080 case BFD_RELOC_AARCH64_TLSGD_MOVW_G1:
6081 BFD_ASSERT (ELFNN_R_TYPE (rel[1].r_info) == AARCH64_R (TLSGD_MOVW_G0_NC));
6082 BFD_ASSERT (rel->r_offset + 12 == rel[2].r_offset);
6083 BFD_ASSERT (ELFNN_R_TYPE (rel[2].r_info) == AARCH64_R (CALL26));
6084
6085 if (is_local)
6086 {
6087 /* Large GD->LE relaxation:
07d6d2b8 6088 movz x0, #:tlsgd_g1:var => movz x0, #:tprel_g2:var, lsl #32
ac734732 6089 movk x0, #:tlsgd_g0_nc:var => movk x0, #:tprel_g1_nc:var, lsl #16
07d6d2b8
AM		 6090 add x0, gp, x0 => movk x0, #:tprel_g0_nc:var
6091 bl __tls_get_addr => mrs x1, tpidr_el0
6092 nop => add x0, x0, x1
ac734732
RL		 6093 */
6094 rel[2].r_info = ELFNN_R_INFO (ELFNN_R_SYM (rel->r_info),
6095 AARCH64_R (TLSLE_MOVW_TPREL_G0_NC));
6096 rel[2].r_offset = rel->r_offset + 8;
6097
2d0ca824
YN		 6098 bfd_putl32 (movz_hw_R0, contents + rel->r_offset + 0);
6099 bfd_putl32 (ldr_hw_R0, contents + rel->r_offset + 4);
6100 bfd_putl32 (movk_R0, contents + rel->r_offset + 8);
ac734732 6101 bfd_putl32 (0xd53bd041, contents + rel->r_offset + 12);
2d0ca824 6102 bfd_putl32 (add_R0_R0_R1, contents + rel->r_offset + 16);
ac734732
RL		 6103 }
6104 else
6105 {
6106 /* Large GD->IE relaxation:
07d6d2b8 6107 movz x0, #:tlsgd_g1:var => movz x0, #:gottprel_g1:var, lsl #16
ac734732 6108 movk x0, #:tlsgd_g0_nc:var => movk x0, #:gottprel_g0_nc:var
07d6d2b8
AM		 6109 add x0, gp, x0 => ldr x0, [gp, x0]
6110 bl __tls_get_addr => mrs x1, tpidr_el0
6111 nop => add x0, x0, x1
ac734732
RL		 6112 */
6113 rel[2].r_info = ELFNN_R_INFO (STN_UNDEF, R_AARCH64_NONE);
6114 bfd_putl32 (0xd2a80000, contents + rel->r_offset + 0);
2d0ca824 6115 bfd_putl32 (ldr_R0, contents + rel->r_offset + 8);
ac734732 6116 bfd_putl32 (0xd53bd041, contents + rel->r_offset + 12);
2d0ca824 6117 bfd_putl32 (add_R0_R0_R1, contents + rel->r_offset + 16);
ac734732
RL		 6118 }
6119 return bfd_reloc_continue;
6120
6121 case BFD_RELOC_AARCH64_TLSGD_MOVW_G0_NC:
6122 return bfd_reloc_continue;
6123#endif
6124
043bf05a
MS		 6125 case BFD_RELOC_AARCH64_TLSIE_LD_GOTTPREL_PREL19:
6126 return bfd_reloc_continue;
6127
a6bb11b2 6128 case BFD_RELOC_AARCH64_TLSDESC_LDNN_LO12_NC:
a06ea964
NC		 6129 if (is_local)
6130 {
6131 /* GD->LE relaxation:
6132 ldr xd, [x0, #:tlsdesc_lo12:var] => movk x0, :tprel_g0_nc:var
2d0ca824
YN		 6133
6134 Where R is x for lp64 mode, and w for ILP32 mode. */
6135 bfd_putl32 (movk_R0, contents + rel->r_offset);
a06ea964
NC		 6136 return bfd_reloc_continue;
6137 }
6138 else
6139 {
6140 /* GD->IE relaxation:
2d0ca824
YN		 6141 ldr xd, [x0, #:tlsdesc_lo12:var] => ldr R0, [x0, #:gottprel_lo12:var]
6142
6143 Where R is x for lp64 mode, and w for ILP32 mode. */
a06ea964 6144 insn = bfd_getl32 (contents + rel->r_offset);
2d0ca824 6145 bfd_putl32 (ldr_R0_mask (insn), contents + rel->r_offset);
a06ea964
NC		 6146 return bfd_reloc_continue;
6147 }
6148
a6bb11b2 6149 case BFD_RELOC_AARCH64_TLSGD_ADD_LO12_NC:
a06ea964
NC		 6150 if (is_local)
6151 {
6152 /* GD->LE relaxation
07d6d2b8
AM		 6153 add x0, #:tlsgd_lo12:var => movk R0, :tprel_g0_nc:var
6154 bl __tls_get_addr => mrs x1, tpidr_el0
6155 nop => add R0, R1, R0
2d0ca824
YN		 6156
6157 Where R is x for lp64 mode, and w for ILP32 mode. */
a06ea964
NC		 6158
6159 /* First kill the tls_get_addr reloc on the bl instruction. */
6160 BFD_ASSERT (rel->r_offset + 4 == rel[1].r_offset);
cec5225b 6161 rel[1].r_info = ELFNN_R_INFO (STN_UNDEF, R_AARCH64_NONE);
a06ea964 6162
2d0ca824 6163 bfd_putl32 (movk_R0, contents + rel->r_offset);
a06ea964 6164 bfd_putl32 (0xd53bd041, contents + rel->r_offset + 4);
2d0ca824 6165 bfd_putl32 (add_R0_R0_R1, contents + rel->r_offset + 8);
a06ea964
NC		 6166 return bfd_reloc_continue;
6167 }
6168 else
6169 {
6170 /* GD->IE relaxation
07d6d2b8
AM		 6171 ADD x0, #:tlsgd_lo12:var => ldr R0, [x0, #:gottprel_lo12:var]
6172 BL __tls_get_addr => mrs x1, tpidr_el0
a06ea964 6173 R_AARCH64_CALL26
07d6d2b8 6174 NOP => add R0, R1, R0
5cd1d8bc
YN		 6175
6176 Where R is x for lp64 mode, and w for ilp32 mode. */
a06ea964 6177
a6bb11b2 6178 BFD_ASSERT (ELFNN_R_TYPE (rel[1].r_info) == AARCH64_R (CALL26));
a06ea964
NC		 6179
6180 /* Remove the relocation on the BL instruction. */
cec5225b 6181 rel[1].r_info = ELFNN_R_INFO (STN_UNDEF, R_AARCH64_NONE);
a06ea964 6182
a06ea964
NC		 6183 /* We choose to fixup the BL and NOP instructions using the
6184 offset from the second relocation to allow flexibility in
6185 scheduling instructions between the ADD and BL. */
2d0ca824 6186 bfd_putl32 (ldr_R0_x0, contents + rel->r_offset);
5cd1d8bc 6187 bfd_putl32 (0xd53bd041, contents + rel[1].r_offset);
2d0ca824 6188 bfd_putl32 (add_R0_R0_R1, contents + rel[1].r_offset + 4);
a06ea964
NC		 6189 return bfd_reloc_continue;
6190 }
6191
0484b454 6192 case BFD_RELOC_AARCH64_TLSDESC_ADD:
f955cccf 6193 case BFD_RELOC_AARCH64_TLSDESC_ADD_LO12:
a6bb11b2 6194 case BFD_RELOC_AARCH64_TLSDESC_CALL:
a06ea964 6195 /* GD->IE/LE relaxation:
07d6d2b8
AM		 6196 add x0, x0, #:tlsdesc_lo12:var => nop
6197 blr xd => nop
a06ea964
NC		 6198 */
6199 bfd_putl32 (INSN_NOP, contents + rel->r_offset);
6200 return bfd_reloc_ok;
6201
0484b454
RL		 6202 case BFD_RELOC_AARCH64_TLSDESC_LDR:
6203 if (is_local)
6204 {
6205 /* GD->LE relaxation:
2d0ca824
YN		 6206 ldr xd, [gp, xn] => movk R0, #:tprel_g0_nc:var
6207
6208 Where R is x for lp64 mode, and w for ILP32 mode. */
6209 bfd_putl32 (movk_R0, contents + rel->r_offset);
0484b454
RL		 6210 return bfd_reloc_continue;
6211 }
6212 else
6213 {
6214 /* GD->IE relaxation:
2d0ca824
YN		 6215 ldr xd, [gp, xn] => ldr R0, [gp, xn]
6216
6217 Where R is x for lp64 mode, and w for ILP32 mode. */
0484b454 6218 insn = bfd_getl32 (contents + rel->r_offset);
2d0ca824 6219 bfd_putl32 (ldr_R0_mask (insn), contents + rel->r_offset);
0484b454
RL		 6220 return bfd_reloc_ok;
6221 }
6222
6223 case BFD_RELOC_AARCH64_TLSDESC_OFF_G0_NC:
6224 /* GD->LE relaxation:
2d0ca824 6225 movk xd, #:tlsdesc_off_g0_nc:var => movk R0, #:tprel_g1_nc:var, lsl #16
0484b454 6226 GD->IE relaxation:
2d0ca824
YN		 6227 movk xd, #:tlsdesc_off_g0_nc:var => movk Rd, #:gottprel_g0_nc:var
6228
6229 Where R is x for lp64 mode, and w for ILP32 mode. */
0484b454 6230 if (is_local)
2d0ca824 6231 bfd_putl32 (ldr_hw_R0, contents + rel->r_offset);
0484b454
RL		 6232 return bfd_reloc_continue;
6233
6234 case BFD_RELOC_AARCH64_TLSDESC_OFF_G1:
6235 if (is_local)
6236 {
6237 /* GD->LE relaxation:
2d0ca824
YN		 6238 movz xd, #:tlsdesc_off_g1:var => movz R0, #:tprel_g2:var, lsl #32
6239
6240 Where R is x for lp64 mode, and w for ILP32 mode. */
6241 bfd_putl32 (movz_hw_R0, contents + rel->r_offset);
0484b454
RL		 6242 return bfd_reloc_continue;
6243 }
6244 else
6245 {
6246 /* GD->IE relaxation:
2d0ca824
YN		 6247 movz xd, #:tlsdesc_off_g1:var => movz Rd, #:gottprel_g1:var, lsl #16
6248
6249 Where R is x for lp64 mode, and w for ILP32 mode. */
0484b454 6250 insn = bfd_getl32 (contents + rel->r_offset);
2d0ca824 6251 bfd_putl32 (movz_R0 | (insn & 0x1f), contents + rel->r_offset);
0484b454
RL		 6252 return bfd_reloc_continue;
6253 }
6254
a6bb11b2 6255 case BFD_RELOC_AARCH64_TLSIE_ADR_GOTTPREL_PAGE21:
a06ea964 6256 /* IE->LE relaxation:
07d6d2b8 6257 adrp xd, :gottprel:var => movz Rd, :tprel_g1:var
2d0ca824
YN		 6258
6259 Where R is x for lp64 mode, and w for ILP32 mode. */
a06ea964
NC		 6260 if (is_local)
6261 {
6262 insn = bfd_getl32 (contents + rel->r_offset);
2d0ca824 6263 bfd_putl32 (movz_R0 | (insn & 0x1f), contents + rel->r_offset);
a06ea964
NC		 6264 }
6265 return bfd_reloc_continue;
6266
a6bb11b2 6267 case BFD_RELOC_AARCH64_TLSIE_LDNN_GOTTPREL_LO12_NC:
a06ea964 6268 /* IE->LE relaxation:
07d6d2b8 6269 ldr xd, [xm, #:gottprel_lo12:var] => movk Rd, :tprel_g0_nc:var
2d0ca824
YN		 6270
6271 Where R is x for lp64 mode, and w for ILP32 mode. */
a06ea964
NC		 6272 if (is_local)
6273 {
6274 insn = bfd_getl32 (contents + rel->r_offset);
2d0ca824 6275 bfd_putl32 (movk_R0 | (insn & 0x1f), contents + rel->r_offset);
a06ea964
NC		 6276 }
6277 return bfd_reloc_continue;
6278
259364ad
JW		 6279 case BFD_RELOC_AARCH64_TLSLD_ADR_PREL21:
6280 /* LD->LE relaxation (tiny):
6281 adr x0, :tlsldm:x => mrs x0, tpidr_el0
c1fc2d7e
YN		 6282 bl __tls_get_addr => add R0, R0, TCB_SIZE
6283
6284 Where R is x for lp64 mode, and w for ilp32 mode. */
259364ad
JW		 6285 if (is_local)
6286 {
6287 BFD_ASSERT (rel->r_offset + 4 == rel[1].r_offset);
6288 BFD_ASSERT (ELFNN_R_TYPE (rel[1].r_info) == AARCH64_R (CALL26));
6289 /* No need of CALL26 relocation for tls_get_addr. */
6290 rel[1].r_info = ELFNN_R_INFO (STN_UNDEF, R_AARCH64_NONE);
6291 bfd_putl32 (0xd53bd040, contents + rel->r_offset + 0);
2d0ca824
YN		 6292 bfd_putl32 (add_R0_R0 | (TCB_SIZE << 10),
6293 contents + rel->r_offset + 4);
259364ad
JW		 6294 return bfd_reloc_ok;
6295 }
6296 return bfd_reloc_continue;
6297
6298 case BFD_RELOC_AARCH64_TLSLD_ADR_PAGE21:
6299 /* LD->LE relaxation (small):
6300 adrp x0, :tlsldm:x => mrs x0, tpidr_el0
6301 */
6302 if (is_local)
6303 {
6304 bfd_putl32 (0xd53bd040, contents + rel->r_offset);
6305 return bfd_reloc_ok;
6306 }
6307 return bfd_reloc_continue;
6308
6309 case BFD_RELOC_AARCH64_TLSLD_ADD_LO12_NC:
6310 /* LD->LE relaxation (small):
c1fc2d7e 6311 add x0, #:tlsldm_lo12:x => add R0, R0, TCB_SIZE
259364ad 6312 bl __tls_get_addr => nop
c1fc2d7e
YN		 6313
6314 Where R is x for lp64 mode, and w for ilp32 mode. */
259364ad
JW		 6315 if (is_local)
6316 {
6317 BFD_ASSERT (rel->r_offset + 4 == rel[1].r_offset);
6318 BFD_ASSERT (ELFNN_R_TYPE (rel[1].r_info) == AARCH64_R (CALL26));
6319 /* No need of CALL26 relocation for tls_get_addr. */
6320 rel[1].r_info = ELFNN_R_INFO (STN_UNDEF, R_AARCH64_NONE);
2d0ca824
YN		 6321 bfd_putl32 (add_R0_R0 | (TCB_SIZE << 10),
6322 contents + rel->r_offset + 0);
c1fc2d7e 6323 bfd_putl32 (INSN_NOP, contents + rel->r_offset + 4);
259364ad
JW		 6324 return bfd_reloc_ok;
6325 }
6326 return bfd_reloc_continue;
6327
a06ea964
NC		 6328 default:
6329 return bfd_reloc_continue;
6330 }
6331
6332 return bfd_reloc_ok;
6333}
6334
6335/* Relocate an AArch64 ELF section. */
6336
6337static bfd_boolean
cec5225b 6338elfNN_aarch64_relocate_section (bfd *output_bfd,
a06ea964
NC		 6339 struct bfd_link_info *info,
6340 bfd *input_bfd,
6341 asection *input_section,
6342 bfd_byte *contents,
6343 Elf_Internal_Rela *relocs,
6344 Elf_Internal_Sym *local_syms,
6345 asection **local_sections)
6346{
6347 Elf_Internal_Shdr *symtab_hdr;
6348 struct elf_link_hash_entry **sym_hashes;
6349 Elf_Internal_Rela *rel;
6350 Elf_Internal_Rela *relend;
6351 const char *name;
cec5225b 6352 struct elf_aarch64_link_hash_table *globals;
a06ea964
NC		 6353 bfd_boolean save_addend = FALSE;
6354 bfd_vma addend = 0;
6355
cec5225b 6356 globals = elf_aarch64_hash_table (info);
a06ea964
NC		 6357
6358 symtab_hdr = &elf_symtab_hdr (input_bfd);
6359 sym_hashes = elf_sym_hashes (input_bfd);
6360
6361 rel = relocs;
6362 relend = relocs + input_section->reloc_count;
6363 for (; rel < relend; rel++)
6364 {
6365 unsigned int r_type;
a6bb11b2
YZ		 6366 bfd_reloc_code_real_type bfd_r_type;
6367 bfd_reloc_code_real_type relaxed_bfd_r_type;
a06ea964
NC		 6368 reloc_howto_type *howto;
6369 unsigned long r_symndx;
6370 Elf_Internal_Sym *sym;
6371 asection *sec;
6372 struct elf_link_hash_entry *h;
6373 bfd_vma relocation;
6374 bfd_reloc_status_type r;
6375 arelent bfd_reloc;
6376 char sym_type;
6377 bfd_boolean unresolved_reloc = FALSE;
6378 char *error_message = NULL;
6379
cec5225b
YZ		 6380 r_symndx = ELFNN_R_SYM (rel->r_info);
6381 r_type = ELFNN_R_TYPE (rel->r_info);
a06ea964 6382
0aa13fee
AM		 6383 bfd_reloc.howto = elfNN_aarch64_howto_from_type (input_bfd, r_type);
6384 howto = bfd_reloc.howto;
a06ea964 6385
7fcfd62d 6386 if (howto == NULL)
47aeb64c
NC		 6387 return _bfd_unrecognized_reloc (input_bfd, input_section, r_type);
6388
a6bb11b2 6389 bfd_r_type = elfNN_aarch64_bfd_reloc_from_howto (howto);
7fcfd62d 6390
a06ea964
NC		 6391 h = NULL;
6392 sym = NULL;
6393 sec = NULL;
6394
6395 if (r_symndx < symtab_hdr->sh_info)
6396 {
6397 sym = local_syms + r_symndx;
cec5225b 6398 sym_type = ELFNN_ST_TYPE (sym->st_info);
a06ea964
NC		 6399 sec = local_sections[r_symndx];
6400
6401 /* An object file might have a reference to a local
6402 undefined symbol. This is a daft object file, but we
6403 should at least do something about it. */
6404 if (r_type != R_AARCH64_NONE && r_type != R_AARCH64_NULL
6405 && bfd_is_und_section (sec)
6406 && ELF_ST_BIND (sym->st_info) != STB_WEAK)
1a72702b
AM		 6407 (*info->callbacks->undefined_symbol)
6408 (info, bfd_elf_string_from_elf_section
6409 (input_bfd, symtab_hdr->sh_link, sym->st_name),
6410 input_bfd, input_section, rel->r_offset, TRUE);
a06ea964 6411
a06ea964 6412 relocation = _bfd_elf_rela_local_sym (output_bfd, sym, &sec, rel);
1419bbe5
WN		 6413
6414 /* Relocate against local STT_GNU_IFUNC symbol. */
0e1862bb 6415 if (!bfd_link_relocatable (info)
1419bbe5
WN		 6416 && ELF_ST_TYPE (sym->st_info) == STT_GNU_IFUNC)
6417 {
6418 h = elfNN_aarch64_get_local_sym_hash (globals, input_bfd,
6419 rel, FALSE);
6420 if (h == NULL)
6421 abort ();
6422
6423 /* Set STT_GNU_IFUNC symbol value. */
6424 h->root.u.def.value = sym->st_value;
6425 h->root.u.def.section = sec;
6426 }
a06ea964
NC		 6427 }
6428 else
6429 {
62d887d4 6430 bfd_boolean warned, ignored;
a06ea964
NC		 6431
6432 RELOC_FOR_GLOBAL_SYMBOL (info, input_bfd, input_section, rel,
6433 r_symndx, symtab_hdr, sym_hashes,
6434 h, sec, relocation,
62d887d4 6435 unresolved_reloc, warned, ignored);
a06ea964
NC		 6436
6437 sym_type = h->type;
6438 }
6439
6440 if (sec != NULL && discarded_section (sec))
6441 RELOC_AGAINST_DISCARDED_SECTION (info, input_bfd, input_section,
6442 rel, 1, relend, howto, 0, contents);
6443
0e1862bb 6444 if (bfd_link_relocatable (info))
2e0488d3 6445 continue;
a06ea964
NC		 6446
6447 if (h != NULL)
6448 name = h->root.root.string;
6449 else
6450 {
6451 name = (bfd_elf_string_from_elf_section
6452 (input_bfd, symtab_hdr->sh_link, sym->st_name));
6453 if (name == NULL || *name == '\0')
6454 name = bfd_section_name (input_bfd, sec);
6455 }
6456
6457 if (r_symndx != 0
6458 && r_type != R_AARCH64_NONE
6459 && r_type != R_AARCH64_NULL
6460 && (h == NULL
6461 || h->root.type == bfd_link_hash_defined
6462 || h->root.type == bfd_link_hash_defweak)
a6bb11b2 6463 && IS_AARCH64_TLS_RELOC (bfd_r_type) != (sym_type == STT_TLS))
a06ea964 6464 {
4eca0228 6465 _bfd_error_handler
a06ea964 6466 ((sym_type == STT_TLS
695344c0 6467 /* xgettext:c-format */
2dcf00ce 6468 ? _("%pB(%pA+%#" PRIx64 "): %s used with TLS symbol %s")
695344c0 6469 /* xgettext:c-format */
2dcf00ce 6470 : _("%pB(%pA+%#" PRIx64 "): %s used with non-TLS symbol %s")),
a06ea964 6471 input_bfd,
2dcf00ce 6472 input_section, (uint64_t) rel->r_offset, howto->name, name);
a06ea964
NC		 6473 }
6474
a06ea964 6475 /* We relax only if we can see that there can be a valid transition
07d6d2b8
AM		 6476 from a reloc type to another.
6477 We call elfNN_aarch64_final_link_relocate unless we're completely
6478 done, i.e., the relaxation produced the final output we want. */
a06ea964 6479
a6bb11b2
YZ		 6480 relaxed_bfd_r_type = aarch64_tls_transition (input_bfd, info, r_type,
6481 h, r_symndx);
6482 if (relaxed_bfd_r_type != bfd_r_type)
a06ea964 6483 {
a6bb11b2
YZ		 6484 bfd_r_type = relaxed_bfd_r_type;
6485 howto = elfNN_aarch64_howto_from_bfd_reloc (bfd_r_type);
6486 BFD_ASSERT (howto != NULL);
6487 r_type = howto->type;
06d2788c 6488 r = elfNN_aarch64_tls_relax (globals, input_bfd, contents, rel, h);
a06ea964
NC		 6489 unresolved_reloc = 0;
6490 }
6491 else
6492 r = bfd_reloc_continue;
6493
6494 /* There may be multiple consecutive relocations for the
07d6d2b8
AM		 6495 same offset. In that case we are supposed to treat the
6496 output of each relocation as the addend for the next. */
a06ea964
NC		 6497 if (rel + 1 < relend
6498 && rel->r_offset == rel[1].r_offset
cec5225b
YZ		 6499 && ELFNN_R_TYPE (rel[1].r_info) != R_AARCH64_NONE
6500 && ELFNN_R_TYPE (rel[1].r_info) != R_AARCH64_NULL)
a06ea964
NC		 6501 save_addend = TRUE;
6502 else
6503 save_addend = FALSE;
6504
6505 if (r == bfd_reloc_continue)
cec5225b 6506 r = elfNN_aarch64_final_link_relocate (howto, input_bfd, output_bfd,
a06ea964
NC		 6507 input_section, contents, rel,
6508 relocation, info, sec,
6509 h, &unresolved_reloc,
1419bbe5 6510 save_addend, &addend, sym);
a06ea964 6511
0aa13fee 6512 switch (elfNN_aarch64_bfd_reloc_from_type (input_bfd, r_type))
a06ea964 6513 {
ce336788 6514 case BFD_RELOC_AARCH64_TLSGD_ADD_LO12_NC:
a6bb11b2 6515 case BFD_RELOC_AARCH64_TLSGD_ADR_PAGE21:
3c12b054 6516 case BFD_RELOC_AARCH64_TLSGD_ADR_PREL21:
7ba7cfe4 6517 case BFD_RELOC_AARCH64_TLSGD_MOVW_G0_NC:
94facae3 6518 case BFD_RELOC_AARCH64_TLSGD_MOVW_G1:
73f925cc 6519 case BFD_RELOC_AARCH64_TLSLD_ADD_LO12_NC:
f69e4920 6520 case BFD_RELOC_AARCH64_TLSLD_ADR_PAGE21:
77a69ff8 6521 case BFD_RELOC_AARCH64_TLSLD_ADR_PREL21:
a06ea964
NC		 6522 if (! symbol_got_offset_mark_p (input_bfd, h, r_symndx))
6523 {
6524 bfd_boolean need_relocs = FALSE;
6525 bfd_byte *loc;
6526 int indx;
6527 bfd_vma off;
6528
6529 off = symbol_got_offset (input_bfd, h, r_symndx);
6530 indx = h && h->dynindx != -1 ? h->dynindx : 0;
6531
6532 need_relocs =
6dda7875 6533 (!bfd_link_executable (info) || indx != 0) &&
a06ea964
NC		 6534 (h == NULL
6535 || ELF_ST_VISIBILITY (h->other) == STV_DEFAULT
6536 || h->root.type != bfd_link_hash_undefweak);
6537
6538 BFD_ASSERT (globals->root.srelgot != NULL);
6539
6540 if (need_relocs)
6541 {
6542 Elf_Internal_Rela rela;
a6bb11b2 6543 rela.r_info = ELFNN_R_INFO (indx, AARCH64_R (TLS_DTPMOD));
a06ea964
NC		 6544 rela.r_addend = 0;
6545 rela.r_offset = globals->root.sgot->output_section->vma +
6546 globals->root.sgot->output_offset + off;
6547
6548
6549 loc = globals->root.srelgot->contents;
6550 loc += globals->root.srelgot->reloc_count++
6551 * RELOC_SIZE (htab);
cec5225b 6552 bfd_elfNN_swap_reloca_out (output_bfd, &rela, loc);
a06ea964 6553
f69e4920 6554 bfd_reloc_code_real_type real_type =
0aa13fee 6555 elfNN_aarch64_bfd_reloc_from_type (input_bfd, r_type);
f69e4920
JW		 6556
6557 if (real_type == BFD_RELOC_AARCH64_TLSLD_ADR_PREL21
73f925cc
JW		 6558 || real_type == BFD_RELOC_AARCH64_TLSLD_ADR_PAGE21
6559 || real_type == BFD_RELOC_AARCH64_TLSLD_ADD_LO12_NC)
77a69ff8
JW		 6560 {
6561 /* For local dynamic, don't generate DTPREL in any case.
6562 Initialize the DTPREL slot into zero, so we get module
6563 base address when invoke runtime TLS resolver. */
6564 bfd_put_NN (output_bfd, 0,
6565 globals->root.sgot->contents + off
6566 + GOT_ENTRY_SIZE);
6567 }
6568 else if (indx == 0)
a06ea964 6569 {
cec5225b 6570 bfd_put_NN (output_bfd,
a06ea964
NC		 6571 relocation - dtpoff_base (info),
6572 globals->root.sgot->contents + off
6573 + GOT_ENTRY_SIZE);
6574 }
6575 else
6576 {
6577 /* This TLS symbol is global. We emit a
6578 relocation to fixup the tls offset at load
6579 time. */
6580 rela.r_info =
a6bb11b2 6581 ELFNN_R_INFO (indx, AARCH64_R (TLS_DTPREL));
a06ea964
NC		 6582 rela.r_addend = 0;
6583 rela.r_offset =
6584 (globals->root.sgot->output_section->vma
6585 + globals->root.sgot->output_offset + off
6586 + GOT_ENTRY_SIZE);
6587
6588 loc = globals->root.srelgot->contents;
6589 loc += globals->root.srelgot->reloc_count++
6590 * RELOC_SIZE (globals);
cec5225b
YZ		 6591 bfd_elfNN_swap_reloca_out (output_bfd, &rela, loc);
6592 bfd_put_NN (output_bfd, (bfd_vma) 0,
a06ea964
NC		 6593 globals->root.sgot->contents + off
6594 + GOT_ENTRY_SIZE);
6595 }
6596 }
6597 else
6598 {
cec5225b 6599 bfd_put_NN (output_bfd, (bfd_vma) 1,
a06ea964 6600 globals->root.sgot->contents + off);
cec5225b 6601 bfd_put_NN (output_bfd,
a06ea964
NC		 6602 relocation - dtpoff_base (info),
6603 globals->root.sgot->contents + off
6604 + GOT_ENTRY_SIZE);
6605 }
6606
6607 symbol_got_offset_mark (input_bfd, h, r_symndx);
6608 }
6609 break;
6610
a6bb11b2
YZ		 6611 case BFD_RELOC_AARCH64_TLSIE_ADR_GOTTPREL_PAGE21:
6612 case BFD_RELOC_AARCH64_TLSIE_LDNN_GOTTPREL_LO12_NC:
043bf05a 6613 case BFD_RELOC_AARCH64_TLSIE_LD_GOTTPREL_PREL19:
3b957e5b
RL		 6614 case BFD_RELOC_AARCH64_TLSIE_MOVW_GOTTPREL_G0_NC:
6615 case BFD_RELOC_AARCH64_TLSIE_MOVW_GOTTPREL_G1:
a06ea964
NC		 6616 if (! symbol_got_offset_mark_p (input_bfd, h, r_symndx))
6617 {
6618 bfd_boolean need_relocs = FALSE;
6619 bfd_byte *loc;
6620 int indx;
6621 bfd_vma off;
6622
6623 off = symbol_got_offset (input_bfd, h, r_symndx);
6624
6625 indx = h && h->dynindx != -1 ? h->dynindx : 0;
6626
6627 need_relocs =
6dda7875 6628 (!bfd_link_executable (info) || indx != 0) &&
a06ea964
NC		 6629 (h == NULL
6630 || ELF_ST_VISIBILITY (h->other) == STV_DEFAULT
6631 || h->root.type != bfd_link_hash_undefweak);
6632
6633 BFD_ASSERT (globals->root.srelgot != NULL);
6634
6635 if (need_relocs)
6636 {
6637 Elf_Internal_Rela rela;
6638
6639 if (indx == 0)
6640 rela.r_addend = relocation - dtpoff_base (info);
6641 else
6642 rela.r_addend = 0;
6643
a6bb11b2 6644 rela.r_info = ELFNN_R_INFO (indx, AARCH64_R (TLS_TPREL));
a06ea964
NC		 6645 rela.r_offset = globals->root.sgot->output_section->vma +
6646 globals->root.sgot->output_offset + off;
6647
6648 loc = globals->root.srelgot->contents;
6649 loc += globals->root.srelgot->reloc_count++
6650 * RELOC_SIZE (htab);
6651
cec5225b 6652 bfd_elfNN_swap_reloca_out (output_bfd, &rela, loc);
a06ea964 6653
cec5225b 6654 bfd_put_NN (output_bfd, rela.r_addend,
a06ea964
NC		 6655 globals->root.sgot->contents + off);
6656 }
6657 else
cec5225b 6658 bfd_put_NN (output_bfd, relocation - tpoff_base (info),
a06ea964
NC		 6659 globals->root.sgot->contents + off);
6660
6661 symbol_got_offset_mark (input_bfd, h, r_symndx);
6662 }
6663 break;
6664
f955cccf 6665 case BFD_RELOC_AARCH64_TLSDESC_ADD_LO12:
a6bb11b2 6666 case BFD_RELOC_AARCH64_TLSDESC_ADR_PAGE21:
389b8029 6667 case BFD_RELOC_AARCH64_TLSDESC_ADR_PREL21:
a6bb11b2 6668 case BFD_RELOC_AARCH64_TLSDESC_LDNN_LO12_NC:
1ada945d 6669 case BFD_RELOC_AARCH64_TLSDESC_LD_PREL19:
0484b454
RL		 6670 case BFD_RELOC_AARCH64_TLSDESC_OFF_G0_NC:
6671 case BFD_RELOC_AARCH64_TLSDESC_OFF_G1:
a06ea964
NC		 6672 if (! symbol_tlsdesc_got_offset_mark_p (input_bfd, h, r_symndx))
6673 {
6674 bfd_boolean need_relocs = FALSE;
6675 int indx = h && h->dynindx != -1 ? h->dynindx : 0;
6676 bfd_vma off = symbol_tlsdesc_got_offset (input_bfd, h, r_symndx);
6677
6678 need_relocs = (h == NULL
6679 || ELF_ST_VISIBILITY (h->other) == STV_DEFAULT
6680 || h->root.type != bfd_link_hash_undefweak);
6681
6682 BFD_ASSERT (globals->root.srelgot != NULL);
6683 BFD_ASSERT (globals->root.sgot != NULL);
6684
6685 if (need_relocs)
6686 {
6687 bfd_byte *loc;
6688 Elf_Internal_Rela rela;
a6bb11b2
YZ		 6689 rela.r_info = ELFNN_R_INFO (indx, AARCH64_R (TLSDESC));
6690
a06ea964
NC		 6691 rela.r_addend = 0;
6692 rela.r_offset = (globals->root.sgotplt->output_section->vma
6693 + globals->root.sgotplt->output_offset
6694 + off + globals->sgotplt_jump_table_size);
6695
6696 if (indx == 0)
6697 rela.r_addend = relocation - dtpoff_base (info);
6698
6699 /* Allocate the next available slot in the PLT reloc
6700 section to hold our R_AARCH64_TLSDESC, the next
6701 available slot is determined from reloc_count,
6702 which we step. But note, reloc_count was
6703 artifically moved down while allocating slots for
6704 real PLT relocs such that all of the PLT relocs
6705 will fit above the initial reloc_count and the
6706 extra stuff will fit below. */
6707 loc = globals->root.srelplt->contents;
6708 loc += globals->root.srelplt->reloc_count++
6709 * RELOC_SIZE (globals);
6710
cec5225b 6711 bfd_elfNN_swap_reloca_out (output_bfd, &rela, loc);
a06ea964 6712
cec5225b 6713 bfd_put_NN (output_bfd, (bfd_vma) 0,
a06ea964
NC		 6714 globals->root.sgotplt->contents + off +
6715 globals->sgotplt_jump_table_size);
cec5225b 6716 bfd_put_NN (output_bfd, (bfd_vma) 0,
a06ea964
NC		 6717 globals->root.sgotplt->contents + off +
6718 globals->sgotplt_jump_table_size +
6719 GOT_ENTRY_SIZE);
6720 }
6721
6722 symbol_tlsdesc_got_offset_mark (input_bfd, h, r_symndx);
6723 }
6724 break;
a6bb11b2
YZ		 6725 default:
6726 break;
a06ea964
NC		 6727 }
6728
a06ea964 6729 /* Dynamic relocs are not propagated for SEC_DEBUGGING sections
07d6d2b8
AM		 6730 because such sections are not SEC_ALLOC and thus ld.so will
6731 not process them. */
a06ea964
NC		 6732 if (unresolved_reloc
6733 && !((input_section->flags & SEC_DEBUGGING) != 0
6734 && h->def_dynamic)
6735 && _bfd_elf_section_offset (output_bfd, info, input_section,
6736 +rel->r_offset) != (bfd_vma) - 1)
6737 {
4eca0228 6738 _bfd_error_handler
695344c0 6739 /* xgettext:c-format */
2dcf00ce
AM		 6740 (_("%pB(%pA+%#" PRIx64 "): "
6741 "unresolvable %s relocation against symbol `%s'"),
6742 input_bfd, input_section, (uint64_t) rel->r_offset, howto->name,
a06ea964
NC		 6743 h->root.root.string);
6744 return FALSE;
6745 }
6746
6747 if (r != bfd_reloc_ok && r != bfd_reloc_continue)
6748 {
c674f5cd 6749 bfd_reloc_code_real_type real_r_type
0aa13fee 6750 = elfNN_aarch64_bfd_reloc_from_type (input_bfd, r_type);
c674f5cd 6751
a06ea964
NC		 6752 switch (r)
6753 {
6754 case bfd_reloc_overflow:
1a72702b
AM		 6755 (*info->callbacks->reloc_overflow)
6756 (info, (h ? &h->root : NULL), name, howto->name, (bfd_vma) 0,
6757 input_bfd, input_section, rel->r_offset);
c674f5cd
JW		 6758 if (real_r_type == BFD_RELOC_AARCH64_LD64_GOTPAGE_LO15
6759 || real_r_type == BFD_RELOC_AARCH64_LD32_GOTPAGE_LO14)
6760 {
6761 (*info->callbacks->warning)
6762 (info,
90b6238f 6763 _("too many GOT entries for -fpic, "
c674f5cd
JW		 6764 "please recompile with -fPIC"),
6765 name, input_bfd, input_section, rel->r_offset);
6766 return FALSE;
6767 }
027e9c75
NC		 6768 /* Overflow can occur when a variable is referenced with a type
6769 that has a larger alignment than the type with which it was
6770 declared. eg:
6771 file1.c: extern int foo; int a (void) { return foo; }
6772 file2.c: char bar, foo, baz;
6773 If the variable is placed into a data section at an offset
6774 that is incompatible with the larger alignment requirement
6775 overflow will occur. (Strictly speaking this is not overflow
6776 but rather an alignment problem, but the bfd_reloc_ error
6777 enum does not have a value to cover that situation).
6778
6779 Try to catch this situation here and provide a more helpful
6780 error message to the user. */
6781 if (addend & ((1 << howto->rightshift) - 1)
6782 /* FIXME: Are we testing all of the appropriate reloc
6783 types here ? */
6784 && (real_r_type == BFD_RELOC_AARCH64_LD_LO19_PCREL
6785 || real_r_type == BFD_RELOC_AARCH64_LDST16_LO12
6786 || real_r_type == BFD_RELOC_AARCH64_LDST32_LO12
6787 || real_r_type == BFD_RELOC_AARCH64_LDST64_LO12
6788 || real_r_type == BFD_RELOC_AARCH64_LDST128_LO12))
6789 {
6790 info->callbacks->warning
90b6238f 6791 (info, _("one possible cause of this error is that the \
027e9c75 6792symbol is being referenced in the indicated code as if it had a larger \
90b6238f 6793alignment than was declared where it was defined"),
027e9c75
NC		 6794 name, input_bfd, input_section, rel->r_offset);
6795 }
a06ea964
NC		 6796 break;
6797
6798 case bfd_reloc_undefined:
1a72702b
AM		 6799 (*info->callbacks->undefined_symbol)
6800 (info, name, input_bfd, input_section, rel->r_offset, TRUE);
a06ea964
NC		 6801 break;
6802
6803 case bfd_reloc_outofrange:
6804 error_message = _("out of range");
6805 goto common_error;
6806
6807 case bfd_reloc_notsupported:
6808 error_message = _("unsupported relocation");
6809 goto common_error;
6810
6811 case bfd_reloc_dangerous:
6812 /* error_message should already be set. */
6813 goto common_error;
6814
6815 default:
6816 error_message = _("unknown error");
6817 /* Fall through. */
6818
6819 common_error:
6820 BFD_ASSERT (error_message != NULL);
1a72702b
AM		 6821 (*info->callbacks->reloc_dangerous)
6822 (info, error_message, input_bfd, input_section, rel->r_offset);
a06ea964
NC		 6823 break;
6824 }
6825 }
027e9c75
NC		 6826
6827 if (!save_addend)
6828 addend = 0;
a06ea964
NC		 6829 }
6830
6831 return TRUE;
6832}
6833
6834/* Set the right machine number. */
6835
6836static bfd_boolean
cec5225b 6837elfNN_aarch64_object_p (bfd *abfd)
a06ea964 6838{
cec5225b
YZ		 6839#if ARCH_SIZE == 32
6840 bfd_default_set_arch_mach (abfd, bfd_arch_aarch64, bfd_mach_aarch64_ilp32);
6841#else
a06ea964 6842 bfd_default_set_arch_mach (abfd, bfd_arch_aarch64, bfd_mach_aarch64);
cec5225b 6843#endif
a06ea964
NC		 6844 return TRUE;
6845}
6846
6847/* Function to keep AArch64 specific flags in the ELF header. */
6848
6849static bfd_boolean
cec5225b 6850elfNN_aarch64_set_private_flags (bfd *abfd, flagword flags)
a06ea964
NC		 6851{
6852 if (elf_flags_init (abfd) && elf_elfheader (abfd)->e_flags != flags)
6853 {
6854 }
6855 else
6856 {
6857 elf_elfheader (abfd)->e_flags = flags;
6858 elf_flags_init (abfd) = TRUE;
6859 }
6860
6861 return TRUE;
6862}
6863
a06ea964
NC		 6864/* Merge backend specific data from an object file to the output
6865 object file when linking. */
6866
6867static bfd_boolean
50e03d47 6868elfNN_aarch64_merge_private_bfd_data (bfd *ibfd, struct bfd_link_info *info)
a06ea964 6869{
50e03d47 6870 bfd *obfd = info->output_bfd;
a06ea964
NC		 6871 flagword out_flags;
6872 flagword in_flags;
6873 bfd_boolean flags_compatible = TRUE;
6874 asection *sec;
6875
6876 /* Check if we have the same endianess. */
50e03d47 6877 if (!_bfd_generic_verify_endian_match (ibfd, info))
a06ea964
NC		 6878 return FALSE;
6879
6880 if (!is_aarch64_elf (ibfd) || !is_aarch64_elf (obfd))
6881 return TRUE;
6882
6883 /* The input BFD must have had its flags initialised. */
6884 /* The following seems bogus to me -- The flags are initialized in
6885 the assembler but I don't think an elf_flags_init field is
6886 written into the object. */
6887 /* BFD_ASSERT (elf_flags_init (ibfd)); */
6888
6889 in_flags = elf_elfheader (ibfd)->e_flags;
6890 out_flags = elf_elfheader (obfd)->e_flags;
6891
6892 if (!elf_flags_init (obfd))
6893 {
6894 /* If the input is the default architecture and had the default
07d6d2b8
AM		 6895 flags then do not bother setting the flags for the output
6896 architecture, instead allow future merges to do this. If no
6897 future merges ever set these flags then they will retain their
6898 uninitialised values, which surprise surprise, correspond
6899 to the default values. */
a06ea964
NC		 6900 if (bfd_get_arch_info (ibfd)->the_default
6901 && elf_elfheader (ibfd)->e_flags == 0)
6902 return TRUE;
6903
6904 elf_flags_init (obfd) = TRUE;
6905 elf_elfheader (obfd)->e_flags = in_flags;
6906
6907 if (bfd_get_arch (obfd) == bfd_get_arch (ibfd)
6908 && bfd_get_arch_info (obfd)->the_default)
6909 return bfd_set_arch_mach (obfd, bfd_get_arch (ibfd),
6910 bfd_get_mach (ibfd));
6911
6912 return TRUE;
6913 }
6914
6915 /* Identical flags must be compatible. */
6916 if (in_flags == out_flags)
6917 return TRUE;
6918
6919 /* Check to see if the input BFD actually contains any sections. If
6920 not, its flags may not have been initialised either, but it
6921 cannot actually cause any incompatiblity. Do not short-circuit
6922 dynamic objects; their section list may be emptied by
6923 elf_link_add_object_symbols.
6924
6925 Also check to see if there are no code sections in the input.
6926 In this case there is no need to check for code specific flags.
6927 XXX - do we need to worry about floating-point format compatability
6928 in data sections ? */
6929 if (!(ibfd->flags & DYNAMIC))
6930 {
6931 bfd_boolean null_input_bfd = TRUE;
6932 bfd_boolean only_data_sections = TRUE;
6933
6934 for (sec = ibfd->sections; sec != NULL; sec = sec->next)
6935 {
6936 if ((bfd_get_section_flags (ibfd, sec)
6937 & (SEC_LOAD | SEC_CODE | SEC_HAS_CONTENTS))
6938 == (SEC_LOAD | SEC_CODE | SEC_HAS_CONTENTS))
6939 only_data_sections = FALSE;
6940
6941 null_input_bfd = FALSE;
6942 break;
6943 }
6944
6945 if (null_input_bfd || only_data_sections)
6946 return TRUE;
6947 }
6948
6949 return flags_compatible;
6950}
6951
6952/* Display the flags field. */
6953
6954static bfd_boolean
cec5225b 6955elfNN_aarch64_print_private_bfd_data (bfd *abfd, void *ptr)
a06ea964
NC		 6956{
6957 FILE *file = (FILE *) ptr;
6958 unsigned long flags;
6959
6960 BFD_ASSERT (abfd != NULL && ptr != NULL);
6961
6962 /* Print normal ELF private data. */
6963 _bfd_elf_print_private_bfd_data (abfd, ptr);
6964
6965 flags = elf_elfheader (abfd)->e_flags;
6966 /* Ignore init flag - it may not be set, despite the flags field
6967 containing valid data. */
6968
6969 /* xgettext:c-format */
6970 fprintf (file, _("private flags = %lx:"), elf_elfheader (abfd)->e_flags);
6971
6972 if (flags)
6973 fprintf (file, _("<Unrecognised flag bits set>"));
6974
6975 fputc ('\n', file);
6976
6977 return TRUE;
6978}
6979
63c1f59d
AM		 6980/* Find dynamic relocs for H that apply to read-only sections. */
6981
6982static asection *
6983readonly_dynrelocs (struct elf_link_hash_entry *h)
6984{
6985 struct elf_dyn_relocs *p;
6986
6987 for (p = elf_aarch64_hash_entry (h)->dyn_relocs; p != NULL; p = p->next)
6988 {
6989 asection *s = p->sec->output_section;
6990
6991 if (s != NULL && (s->flags & SEC_READONLY) != 0)
6992 return p->sec;
6993 }
6994 return NULL;
6995}
6996
6353d82b
JW		 6997/* Return true if we need copy relocation against EH. */
6998
6999static bfd_boolean
7000need_copy_relocation_p (struct elf_aarch64_link_hash_entry *eh)
7001{
7002 struct elf_dyn_relocs *p;
7003 asection *s;
7004
7005 for (p = eh->dyn_relocs; p != NULL; p = p->next)
7006 {
7007 /* If there is any pc-relative reference, we need to keep copy relocation
7008 to avoid propagating the relocation into runtime that current glibc
7009 does not support. */
7010 if (p->pc_count)
7011 return TRUE;
7012
7013 s = p->sec->output_section;
7014 /* Need copy relocation if it's against read-only section. */
7015 if (s != NULL && (s->flags & SEC_READONLY) != 0)
7016 return TRUE;
7017 }
7018
7019 return FALSE;
7020}
7021
a06ea964
NC		 7022/* Adjust a symbol defined by a dynamic object and referenced by a
7023 regular object. The current definition is in some section of the
7024 dynamic object, but we're not including those sections. We have to
7025 change the definition to something the rest of the link can
7026 understand. */
7027
7028static bfd_boolean
cec5225b 7029elfNN_aarch64_adjust_dynamic_symbol (struct bfd_link_info *info,
a06ea964
NC		 7030 struct elf_link_hash_entry *h)
7031{
cec5225b 7032 struct elf_aarch64_link_hash_table *htab;
5474d94f 7033 asection *s, *srel;
a06ea964
NC		 7034
7035 /* If this is a function, put it in the procedure linkage table. We
7036 will fill in the contents of the procedure linkage table later,
7037 when we know the address of the .got section. */
1419bbe5 7038 if (h->type == STT_FUNC || h->type == STT_GNU_IFUNC || h->needs_plt)
a06ea964
NC		 7039 {
7040 if (h->plt.refcount <= 0
1419bbe5
WN		 7041 || (h->type != STT_GNU_IFUNC
7042 && (SYMBOL_CALLS_LOCAL (info, h)
7043 || (ELF_ST_VISIBILITY (h->other) != STV_DEFAULT
7044 && h->root.type == bfd_link_hash_undefweak))))
a06ea964
NC		 7045 {
7046 /* This case can occur if we saw a CALL26 reloc in
7047 an input file, but the symbol wasn't referred to
7048 by a dynamic object or all references were
7049 garbage collected. In which case we can end up
7050 resolving. */
7051 h->plt.offset = (bfd_vma) - 1;
7052 h->needs_plt = 0;
7053 }
7054
7055 return TRUE;
7056 }
7057 else
80de0c6d 7058 /* Otherwise, reset to -1. */
a06ea964
NC		 7059 h->plt.offset = (bfd_vma) - 1;
7060
7061
7062 /* If this is a weak symbol, and there is a real definition, the
7063 processor independent code will have arranged for us to see the
7064 real definition first, and we can just use the same value. */
60d67dc8 7065 if (h->is_weakalias)
a06ea964 7066 {
60d67dc8
AM		 7067 struct elf_link_hash_entry *def = weakdef (h);
7068 BFD_ASSERT (def->root.type == bfd_link_hash_defined);
7069 h->root.u.def.section = def->root.u.def.section;
7070 h->root.u.def.value = def->root.u.def.value;
a06ea964 7071 if (ELIMINATE_COPY_RELOCS || info->nocopyreloc)
60d67dc8 7072 h->non_got_ref = def->non_got_ref;
a06ea964
NC		 7073 return TRUE;
7074 }
7075
7076 /* If we are creating a shared library, we must presume that the
7077 only references to the symbol are via the global offset table.
7078 For such cases we need not do anything here; the relocations will
7079 be handled correctly by relocate_section. */
0e1862bb 7080 if (bfd_link_pic (info))
a06ea964
NC		 7081 return TRUE;
7082
7083 /* If there are no references to this symbol that do not use the
7084 GOT, we don't need to generate a copy reloc. */
7085 if (!h->non_got_ref)
7086 return TRUE;
7087
7088 /* If -z nocopyreloc was given, we won't generate them either. */
7089 if (info->nocopyreloc)
7090 {
7091 h->non_got_ref = 0;
7092 return TRUE;
7093 }
7094
6353d82b
JW		 7095 if (ELIMINATE_COPY_RELOCS)
7096 {
7097 struct elf_aarch64_link_hash_entry *eh;
dce2246a 7098 /* If we don't find any dynamic relocs in read-only sections, then
6353d82b
JW		 7099 we'll be keeping the dynamic relocs and avoiding the copy reloc. */
7100 eh = (struct elf_aarch64_link_hash_entry *) h;
7101 if (!need_copy_relocation_p (eh))
7102 {
7103 h->non_got_ref = 0;
7104 return TRUE;
7105 }
7106 }
7107
a06ea964
NC		 7108 /* We must allocate the symbol in our .dynbss section, which will
7109 become part of the .bss section of the executable. There will be
7110 an entry for this symbol in the .dynsym section. The dynamic
7111 object will contain position independent code, so all references
7112 from the dynamic object to this symbol will go through the global
7113 offset table. The dynamic linker will use the .dynsym entry to
7114 determine the address it must put in the global offset table, so
7115 both the dynamic object and the regular object will refer to the
7116 same memory location for the variable. */
7117
cec5225b 7118 htab = elf_aarch64_hash_table (info);
a06ea964
NC		 7119
7120 /* We must generate a R_AARCH64_COPY reloc to tell the dynamic linker
7121 to copy the initial value out of the dynamic object and into the
7122 runtime process image. */
5474d94f
AM		 7123 if ((h->root.u.def.section->flags & SEC_READONLY) != 0)
7124 {
7125 s = htab->root.sdynrelro;
7126 srel = htab->root.sreldynrelro;
7127 }
7128 else
7129 {
7130 s = htab->root.sdynbss;
7131 srel = htab->root.srelbss;
7132 }
a06ea964
NC		 7133 if ((h->root.u.def.section->flags & SEC_ALLOC) != 0 && h->size != 0)
7134 {
5474d94f 7135 srel->size += RELOC_SIZE (htab);
a06ea964
NC		 7136 h->needs_copy = 1;
7137 }
7138
6cabe1ea 7139 return _bfd_elf_adjust_dynamic_copy (info, h, s);
a06ea964
NC		 7140
7141}
7142
7143static bfd_boolean
cec5225b 7144elfNN_aarch64_allocate_local_symbols (bfd *abfd, unsigned number)
a06ea964
NC		 7145{
7146 struct elf_aarch64_local_symbol *locals;
cec5225b 7147 locals = elf_aarch64_locals (abfd);
a06ea964
NC		 7148 if (locals == NULL)
7149 {
7150 locals = (struct elf_aarch64_local_symbol *)
7151 bfd_zalloc (abfd, number * sizeof (struct elf_aarch64_local_symbol));
7152 if (locals == NULL)
7153 return FALSE;
cec5225b 7154 elf_aarch64_locals (abfd) = locals;
a06ea964
NC		 7155 }
7156 return TRUE;
7157}
7158
cc0efaa8
MS		 7159/* Create the .got section to hold the global offset table. */
7160
7161static bfd_boolean
7162aarch64_elf_create_got_section (bfd *abfd, struct bfd_link_info *info)
7163{
7164 const struct elf_backend_data *bed = get_elf_backend_data (abfd);
7165 flagword flags;
7166 asection *s;
7167 struct elf_link_hash_entry *h;
7168 struct elf_link_hash_table *htab = elf_hash_table (info);
7169
7170 /* This function may be called more than once. */
ce558b89 7171 if (htab->sgot != NULL)
cc0efaa8
MS		 7172 return TRUE;
7173
7174 flags = bed->dynamic_sec_flags;
7175
7176 s = bfd_make_section_anyway_with_flags (abfd,
7177 (bed->rela_plts_and_copies_p
7178 ? ".rela.got" : ".rel.got"),
7179 (bed->dynamic_sec_flags
7180 | SEC_READONLY));
7181 if (s == NULL
7182 || ! bfd_set_section_alignment (abfd, s, bed->s->log_file_align))
7183 return FALSE;
7184 htab->srelgot = s;
7185
7186 s = bfd_make_section_anyway_with_flags (abfd, ".got", flags);
7187 if (s == NULL
7188 || !bfd_set_section_alignment (abfd, s, bed->s->log_file_align))
7189 return FALSE;
7190 htab->sgot = s;
7191 htab->sgot->size += GOT_ENTRY_SIZE;
7192
7193 if (bed->want_got_sym)
7194 {
7195 /* Define the symbol _GLOBAL_OFFSET_TABLE_ at the start of the .got
7196 (or .got.plt) section. We don't do this in the linker script
7197 because we don't want to define the symbol if we are not creating
7198 a global offset table. */
7199 h = _bfd_elf_define_linkage_sym (abfd, info, s,
7200 "_GLOBAL_OFFSET_TABLE_");
7201 elf_hash_table (info)->hgot = h;
7202 if (h == NULL)
7203 return FALSE;
7204 }
7205
7206 if (bed->want_got_plt)
7207 {
7208 s = bfd_make_section_anyway_with_flags (abfd, ".got.plt", flags);
7209 if (s == NULL
7210 || !bfd_set_section_alignment (abfd, s,
7211 bed->s->log_file_align))
7212 return FALSE;
7213 htab->sgotplt = s;
7214 }
7215
7216 /* The first bit of the global offset table is the header. */
7217 s->size += bed->got_header_size;
7218
7219 return TRUE;
7220}
7221
a06ea964
NC		 7222/* Look through the relocs for a section during the first phase. */
7223
7224static bfd_boolean
cec5225b 7225elfNN_aarch64_check_relocs (bfd *abfd, struct bfd_link_info *info,
a06ea964
NC		 7226 asection *sec, const Elf_Internal_Rela *relocs)
7227{
7228 Elf_Internal_Shdr *symtab_hdr;
7229 struct elf_link_hash_entry **sym_hashes;
7230 const Elf_Internal_Rela *rel;
7231 const Elf_Internal_Rela *rel_end;
7232 asection *sreloc;
7233
cec5225b 7234 struct elf_aarch64_link_hash_table *htab;
a06ea964 7235
0e1862bb 7236 if (bfd_link_relocatable (info))
a06ea964
NC		 7237 return TRUE;
7238
7239 BFD_ASSERT (is_aarch64_elf (abfd));
7240
cec5225b 7241 htab = elf_aarch64_hash_table (info);
a06ea964
NC		 7242 sreloc = NULL;
7243
7244 symtab_hdr = &elf_symtab_hdr (abfd);
7245 sym_hashes = elf_sym_hashes (abfd);
a06ea964
NC		 7246
7247 rel_end = relocs + sec->reloc_count;
7248 for (rel = relocs; rel < rel_end; rel++)
7249 {
7250 struct elf_link_hash_entry *h;
d42c267e 7251 unsigned int r_symndx;
a06ea964 7252 unsigned int r_type;
a6bb11b2 7253 bfd_reloc_code_real_type bfd_r_type;
1419bbe5 7254 Elf_Internal_Sym *isym;
a06ea964 7255
cec5225b
YZ		 7256 r_symndx = ELFNN_R_SYM (rel->r_info);
7257 r_type = ELFNN_R_TYPE (rel->r_info);
a06ea964
NC		 7258
7259 if (r_symndx >= NUM_SHDR_ENTRIES (symtab_hdr))
7260 {
695344c0 7261 /* xgettext:c-format */
871b3ab2 7262 _bfd_error_handler (_("%pB: bad symbol index: %d"), abfd, r_symndx);
a06ea964
NC		 7263 return FALSE;
7264 }
7265
ed5acf27 7266 if (r_symndx < symtab_hdr->sh_info)
1419bbe5
WN		 7267 {
7268 /* A local symbol. */
7269 isym = bfd_sym_from_r_symndx (&htab->sym_cache,
7270 abfd, r_symndx);
7271 if (isym == NULL)
7272 return FALSE;
7273
7274 /* Check relocation against local STT_GNU_IFUNC symbol. */
7275 if (ELF_ST_TYPE (isym->st_info) == STT_GNU_IFUNC)
7276 {
7277 h = elfNN_aarch64_get_local_sym_hash (htab, abfd, rel,
7278 TRUE);
7279 if (h == NULL)
7280 return FALSE;
7281
7282 /* Fake a STT_GNU_IFUNC symbol. */
7283 h->type = STT_GNU_IFUNC;
7284 h->def_regular = 1;
7285 h->ref_regular = 1;
7286 h->forced_local = 1;
7287 h->root.type = bfd_link_hash_defined;
7288 }
7289 else
7290 h = NULL;
7291 }
a06ea964
NC		 7292 else
7293 {
7294 h = sym_hashes[r_symndx - symtab_hdr->sh_info];
7295 while (h->root.type == bfd_link_hash_indirect
7296 || h->root.type == bfd_link_hash_warning)
7297 h = (struct elf_link_hash_entry *) h->root.u.i.link;
7298 }
7299
7300 /* Could be done earlier, if h were already available. */
a6bb11b2 7301 bfd_r_type = aarch64_tls_transition (abfd, info, r_type, h, r_symndx);
a06ea964 7302
1419bbe5
WN		 7303 if (h != NULL)
7304 {
18f822a0
JW		 7305 /* If a relocation refers to _GLOBAL_OFFSET_TABLE_, create the .got.
7306 This shows up in particular in an R_AARCH64_PREL64 in large model
7307 when calculating the pc-relative address to .got section which is
7308 used to initialize the gp register. */
7309 if (h->root.root.string
7310 && strcmp (h->root.root.string, "_GLOBAL_OFFSET_TABLE_") == 0)
7311 {
7312 if (htab->root.dynobj == NULL)
7313 htab->root.dynobj = abfd;
7314
7315 if (! aarch64_elf_create_got_section (htab->root.dynobj, info))
7316 return FALSE;
7317
7318 BFD_ASSERT (h == htab->root.hgot);
7319 }
7320
1419bbe5
WN		 7321 /* Create the ifunc sections for static executables. If we
7322 never see an indirect function symbol nor we are building
7323 a static executable, those sections will be empty and
7324 won't appear in output. */
7325 switch (bfd_r_type)
7326 {
7327 default:
7328 break;
7329
ce336788
JW		 7330 case BFD_RELOC_AARCH64_ADD_LO12:
7331 case BFD_RELOC_AARCH64_ADR_GOT_PAGE:
7332 case BFD_RELOC_AARCH64_ADR_HI21_PCREL:
1419bbe5 7333 case BFD_RELOC_AARCH64_CALL26:
ce336788 7334 case BFD_RELOC_AARCH64_GOT_LD_PREL19:
1419bbe5 7335 case BFD_RELOC_AARCH64_JUMP26:
7018c030 7336 case BFD_RELOC_AARCH64_LD32_GOTPAGE_LO14:
1419bbe5 7337 case BFD_RELOC_AARCH64_LD32_GOT_LO12_NC:
a2e1db00 7338 case BFD_RELOC_AARCH64_LD64_GOTOFF_LO15:
99ad26cb 7339 case BFD_RELOC_AARCH64_LD64_GOTPAGE_LO15:
1419bbe5 7340 case BFD_RELOC_AARCH64_LD64_GOT_LO12_NC:
dc8008f5 7341 case BFD_RELOC_AARCH64_MOVW_GOTOFF_G0_NC:
74a1bfe1 7342 case BFD_RELOC_AARCH64_MOVW_GOTOFF_G1:
ce336788 7343 case BFD_RELOC_AARCH64_NN:
1419bbe5
WN		 7344 if (htab->root.dynobj == NULL)
7345 htab->root.dynobj = abfd;
7346 if (!_bfd_elf_create_ifunc_sections (htab->root.dynobj, info))
7347 return FALSE;
7348 break;
7349 }
7350
2d0ca824 7351 /* It is referenced by a non-shared object. */
1419bbe5 7352 h->ref_regular = 1;
1419bbe5
WN		 7353 }
7354
a6bb11b2 7355 switch (bfd_r_type)
a06ea964 7356 {
79e74192
RL		 7357 case BFD_RELOC_AARCH64_16:
7358#if ARCH_SIZE == 64
7359 case BFD_RELOC_AARCH64_32:
7360#endif
279b2f94 7361 if (bfd_link_pic (info) && (sec->flags & SEC_ALLOC) != 0)
79e74192 7362 {
279b2f94
RL		 7363 if (h != NULL
7364 /* This is an absolute symbol. It represents a value instead
7365 of an address. */
7366 && ((h->root.type == bfd_link_hash_defined
7367 && bfd_is_abs_section (h->root.u.def.section))
7368 /* This is an undefined symbol. */
7369 || h->root.type == bfd_link_hash_undefined))
7370 break;
7371
7372 /* For local symbols, defined global symbols in a non-ABS section,
7373 it is assumed that the value is an address. */
79e74192
RL		 7374 int howto_index = bfd_r_type - BFD_RELOC_AARCH64_RELOC_START;
7375 _bfd_error_handler
7376 /* xgettext:c-format */
871b3ab2 7377 (_("%pB: relocation %s against `%s' can not be used when making "
79e74192
RL		 7378 "a shared object"),
7379 abfd, elfNN_aarch64_howto_table[howto_index].name,
7380 (h) ? h->root.root.string : "a local symbol");
7381 bfd_set_error (bfd_error_bad_value);
7382 return FALSE;
7383 }
7384 else
7385 break;
7386
6353d82b
JW		 7387 case BFD_RELOC_AARCH64_MOVW_G0_NC:
7388 case BFD_RELOC_AARCH64_MOVW_G1_NC:
7389 case BFD_RELOC_AARCH64_MOVW_G2_NC:
7390 case BFD_RELOC_AARCH64_MOVW_G3:
7391 if (bfd_link_pic (info))
7392 {
7393 int howto_index = bfd_r_type - BFD_RELOC_AARCH64_RELOC_START;
7394 _bfd_error_handler
7395 /* xgettext:c-format */
871b3ab2 7396 (_("%pB: relocation %s against `%s' can not be used when making "
6353d82b
JW		 7397 "a shared object; recompile with -fPIC"),
7398 abfd, elfNN_aarch64_howto_table[howto_index].name,
7399 (h) ? h->root.root.string : "a local symbol");
7400 bfd_set_error (bfd_error_bad_value);
7401 return FALSE;
7402 }
7403 /* Fall through. */
7404
7405 case BFD_RELOC_AARCH64_16_PCREL:
7406 case BFD_RELOC_AARCH64_32_PCREL:
7407 case BFD_RELOC_AARCH64_64_PCREL:
7408 case BFD_RELOC_AARCH64_ADD_LO12:
7409 case BFD_RELOC_AARCH64_ADR_HI21_NC_PCREL:
7410 case BFD_RELOC_AARCH64_ADR_HI21_PCREL:
7411 case BFD_RELOC_AARCH64_ADR_LO21_PCREL:
7412 case BFD_RELOC_AARCH64_LDST128_LO12:
7413 case BFD_RELOC_AARCH64_LDST16_LO12:
7414 case BFD_RELOC_AARCH64_LDST32_LO12:
7415 case BFD_RELOC_AARCH64_LDST64_LO12:
7416 case BFD_RELOC_AARCH64_LDST8_LO12:
7417 case BFD_RELOC_AARCH64_LD_LO19_PCREL:
7418 if (h == NULL || bfd_link_pic (info))
7419 break;
7420 /* Fall through. */
7421
a6bb11b2 7422 case BFD_RELOC_AARCH64_NN:
a06ea964
NC		 7423
7424 /* We don't need to handle relocs into sections not going into
7425 the "real" output. */
7426 if ((sec->flags & SEC_ALLOC) == 0)
7427 break;
7428
7429 if (h != NULL)
7430 {
0e1862bb 7431 if (!bfd_link_pic (info))
a06ea964
NC		 7432 h->non_got_ref = 1;
7433
7434 h->plt.refcount += 1;
7435 h->pointer_equality_needed = 1;
7436 }
7437
7438 /* No need to do anything if we're not creating a shared
7439 object. */
6353d82b
JW		 7440 if (!(bfd_link_pic (info)
7441 /* If on the other hand, we are creating an executable, we
7442 may need to keep relocations for symbols satisfied by a
7443 dynamic library if we manage to avoid copy relocs for the
7444 symbol.
7445
7446 NOTE: Currently, there is no support of copy relocs
7447 elimination on pc-relative relocation types, because there is
7448 no dynamic relocation support for them in glibc. We still
7449 record the dynamic symbol reference for them. This is
7450 because one symbol may be referenced by both absolute
7451 relocation (for example, BFD_RELOC_AARCH64_NN) and
7452 pc-relative relocation. We need full symbol reference
7453 information to make correct decision later in
7454 elfNN_aarch64_adjust_dynamic_symbol. */
7455 || (ELIMINATE_COPY_RELOCS
7456 && !bfd_link_pic (info)
7457 && h != NULL
7458 && (h->root.type == bfd_link_hash_defweak
7459 || !h->def_regular))))
a06ea964
NC		 7460 break;
7461
7462 {
7463 struct elf_dyn_relocs *p;
7464 struct elf_dyn_relocs **head;
6353d82b 7465 int howto_index = bfd_r_type - BFD_RELOC_AARCH64_RELOC_START;
a06ea964
NC		 7466
7467 /* We must copy these reloc types into the output file.
7468 Create a reloc section in dynobj and make room for
7469 this reloc. */
7470 if (sreloc == NULL)
7471 {
7472 if (htab->root.dynobj == NULL)
7473 htab->root.dynobj = abfd;
7474
7475 sreloc = _bfd_elf_make_dynamic_reloc_section
0608afa7 7476 (sec, htab->root.dynobj, LOG_FILE_ALIGN, abfd, /*rela? */ TRUE);
a06ea964
NC		 7477
7478 if (sreloc == NULL)
7479 return FALSE;
7480 }
7481
7482 /* If this is a global symbol, we count the number of
7483 relocations we need for this symbol. */
7484 if (h != NULL)
7485 {
cec5225b
YZ		 7486 struct elf_aarch64_link_hash_entry *eh;
7487 eh = (struct elf_aarch64_link_hash_entry *) h;
a06ea964
NC		 7488 head = &eh->dyn_relocs;
7489 }
7490 else
7491 {
7492 /* Track dynamic relocs needed for local syms too.
7493 We really need local syms available to do this
7494 easily. Oh well. */
7495
7496 asection *s;
7497 void **vpp;
a06ea964
NC		 7498
7499 isym = bfd_sym_from_r_symndx (&htab->sym_cache,
7500 abfd, r_symndx);
7501 if (isym == NULL)
7502 return FALSE;
7503
7504 s = bfd_section_from_elf_index (abfd, isym->st_shndx);
7505 if (s == NULL)
7506 s = sec;
7507
7508 /* Beware of type punned pointers vs strict aliasing
7509 rules. */
7510 vpp = &(elf_section_data (s)->local_dynrel);
7511 head = (struct elf_dyn_relocs **) vpp;
7512 }
7513
7514 p = *head;
7515 if (p == NULL || p->sec != sec)
7516 {
7517 bfd_size_type amt = sizeof *p;
7518 p = ((struct elf_dyn_relocs *)
7519 bfd_zalloc (htab->root.dynobj, amt));
7520 if (p == NULL)
7521 return FALSE;
7522 p->next = *head;
7523 *head = p;
7524 p->sec = sec;
7525 }
7526
7527 p->count += 1;
7528
6353d82b
JW		 7529 if (elfNN_aarch64_howto_table[howto_index].pc_relative)
7530 p->pc_count += 1;
a06ea964
NC		 7531 }
7532 break;
7533
7534 /* RR: We probably want to keep a consistency check that
7535 there are no dangling GOT_PAGE relocs. */
a6bb11b2 7536 case BFD_RELOC_AARCH64_ADR_GOT_PAGE:
7bcccb57 7537 case BFD_RELOC_AARCH64_GOT_LD_PREL19:
7018c030 7538 case BFD_RELOC_AARCH64_LD32_GOTPAGE_LO14:
7bcccb57 7539 case BFD_RELOC_AARCH64_LD32_GOT_LO12_NC:
a2e1db00 7540 case BFD_RELOC_AARCH64_LD64_GOTOFF_LO15:
99ad26cb 7541 case BFD_RELOC_AARCH64_LD64_GOTPAGE_LO15:
7bcccb57 7542 case BFD_RELOC_AARCH64_LD64_GOT_LO12_NC:
dc8008f5 7543 case BFD_RELOC_AARCH64_MOVW_GOTOFF_G0_NC:
74a1bfe1 7544 case BFD_RELOC_AARCH64_MOVW_GOTOFF_G1:
f955cccf 7545 case BFD_RELOC_AARCH64_TLSDESC_ADD_LO12:
7bcccb57 7546 case BFD_RELOC_AARCH64_TLSDESC_ADR_PAGE21:
389b8029 7547 case BFD_RELOC_AARCH64_TLSDESC_ADR_PREL21:
7bcccb57 7548 case BFD_RELOC_AARCH64_TLSDESC_LD32_LO12_NC:
f955cccf 7549 case BFD_RELOC_AARCH64_TLSDESC_LD64_LO12:
1ada945d 7550 case BFD_RELOC_AARCH64_TLSDESC_LD_PREL19:
0484b454
RL		 7551 case BFD_RELOC_AARCH64_TLSDESC_OFF_G0_NC:
7552 case BFD_RELOC_AARCH64_TLSDESC_OFF_G1:
a6bb11b2 7553 case BFD_RELOC_AARCH64_TLSGD_ADD_LO12_NC:
7bcccb57 7554 case BFD_RELOC_AARCH64_TLSGD_ADR_PAGE21:
3c12b054 7555 case BFD_RELOC_AARCH64_TLSGD_ADR_PREL21:
7ba7cfe4 7556 case BFD_RELOC_AARCH64_TLSGD_MOVW_G0_NC:
94facae3 7557 case BFD_RELOC_AARCH64_TLSGD_MOVW_G1:
a6bb11b2 7558 case BFD_RELOC_AARCH64_TLSIE_ADR_GOTTPREL_PAGE21:
a6bb11b2 7559 case BFD_RELOC_AARCH64_TLSIE_LD32_GOTTPREL_LO12_NC:
7bcccb57 7560 case BFD_RELOC_AARCH64_TLSIE_LD64_GOTTPREL_LO12_NC:
043bf05a 7561 case BFD_RELOC_AARCH64_TLSIE_LD_GOTTPREL_PREL19:
3b957e5b
RL		 7562 case BFD_RELOC_AARCH64_TLSIE_MOVW_GOTTPREL_G0_NC:
7563 case BFD_RELOC_AARCH64_TLSIE_MOVW_GOTTPREL_G1:
73f925cc 7564 case BFD_RELOC_AARCH64_TLSLD_ADD_LO12_NC:
f69e4920 7565 case BFD_RELOC_AARCH64_TLSLD_ADR_PAGE21:
77a69ff8 7566 case BFD_RELOC_AARCH64_TLSLD_ADR_PREL21:
b7a944fe
RL		 7567 case BFD_RELOC_AARCH64_TLSLE_MOVW_TPREL_G1:
7568 case BFD_RELOC_AARCH64_TLSLE_MOVW_TPREL_G1_NC:
7569 case BFD_RELOC_AARCH64_TLSLE_MOVW_TPREL_G2:
a06ea964
NC		 7570 {
7571 unsigned got_type;
7572 unsigned old_got_type;
7573
a6bb11b2 7574 got_type = aarch64_reloc_got_type (bfd_r_type);
a06ea964
NC		 7575
7576 if (h)
7577 {
7578 h->got.refcount += 1;
cec5225b 7579 old_got_type = elf_aarch64_hash_entry (h)->got_type;
a06ea964
NC		 7580 }
7581 else
7582 {
7583 struct elf_aarch64_local_symbol *locals;
7584
cec5225b 7585 if (!elfNN_aarch64_allocate_local_symbols
a06ea964
NC		 7586 (abfd, symtab_hdr->sh_info))
7587 return FALSE;
7588
cec5225b 7589 locals = elf_aarch64_locals (abfd);
a06ea964
NC		 7590 BFD_ASSERT (r_symndx < symtab_hdr->sh_info);
7591 locals[r_symndx].got_refcount += 1;
7592 old_got_type = locals[r_symndx].got_type;
7593 }
7594
7595 /* If a variable is accessed with both general dynamic TLS
7596 methods, two slots may be created. */
7597 if (GOT_TLS_GD_ANY_P (old_got_type) && GOT_TLS_GD_ANY_P (got_type))
7598 got_type |= old_got_type;
7599
7600 /* We will already have issued an error message if there
7601 is a TLS/non-TLS mismatch, based on the symbol type.
7602 So just combine any TLS types needed. */
7603 if (old_got_type != GOT_UNKNOWN && old_got_type != GOT_NORMAL
7604 && got_type != GOT_NORMAL)
7605 got_type |= old_got_type;
7606
7607 /* If the symbol is accessed by both IE and GD methods, we
7608 are able to relax. Turn off the GD flag, without
7609 messing up with any other kind of TLS types that may be
7610 involved. */
7611 if ((got_type & GOT_TLS_IE) && GOT_TLS_GD_ANY_P (got_type))
7612 got_type &= ~ (GOT_TLSDESC_GD | GOT_TLS_GD);
7613
7614 if (old_got_type != got_type)
7615 {
7616 if (h != NULL)
cec5225b 7617 elf_aarch64_hash_entry (h)->got_type = got_type;
a06ea964
NC		 7618 else
7619 {
7620 struct elf_aarch64_local_symbol *locals;
cec5225b 7621 locals = elf_aarch64_locals (abfd);
a06ea964
NC		 7622 BFD_ASSERT (r_symndx < symtab_hdr->sh_info);
7623 locals[r_symndx].got_type = got_type;
7624 }
7625 }
7626
cc0efaa8
MS		 7627 if (htab->root.dynobj == NULL)
7628 htab->root.dynobj = abfd;
7629 if (! aarch64_elf_create_got_section (htab->root.dynobj, info))
7630 return FALSE;
a06ea964
NC		 7631 break;
7632 }
7633
a6bb11b2
YZ		 7634 case BFD_RELOC_AARCH64_CALL26:
7635 case BFD_RELOC_AARCH64_JUMP26:
a06ea964
NC		 7636 /* If this is a local symbol then we resolve it
7637 directly without creating a PLT entry. */
7638 if (h == NULL)
7639 continue;
7640
7641 h->needs_plt = 1;
1419bbe5
WN		 7642 if (h->plt.refcount <= 0)
7643 h->plt.refcount = 1;
7644 else
7645 h->plt.refcount += 1;
a06ea964 7646 break;
a6bb11b2
YZ		 7647
7648 default:
7649 break;
a06ea964
NC		 7650 }
7651 }
a6bb11b2 7652
a06ea964
NC		 7653 return TRUE;
7654}
7655
7656/* Treat mapping symbols as special target symbols. */
7657
7658static bfd_boolean
cec5225b 7659elfNN_aarch64_is_target_special_symbol (bfd *abfd ATTRIBUTE_UNUSED,
a06ea964
NC		 7660 asymbol *sym)
7661{
7662 return bfd_is_aarch64_special_symbol_name (sym->name,
7663 BFD_AARCH64_SPECIAL_SYM_TYPE_ANY);
7664}
7665
7666/* This is a copy of elf_find_function () from elf.c except that
7667 AArch64 mapping symbols are ignored when looking for function names. */
7668
7669static bfd_boolean
7670aarch64_elf_find_function (bfd *abfd ATTRIBUTE_UNUSED,
a06ea964 7671 asymbol **symbols,
fb167eb2 7672 asection *section,
a06ea964
NC		 7673 bfd_vma offset,
7674 const char **filename_ptr,
7675 const char **functionname_ptr)
7676{
7677 const char *filename = NULL;
7678 asymbol *func = NULL;
7679 bfd_vma low_func = 0;
7680 asymbol **p;
7681
7682 for (p = symbols; *p != NULL; p++)
7683 {
7684 elf_symbol_type *q;
7685
7686 q = (elf_symbol_type *) * p;
7687
7688 switch (ELF_ST_TYPE (q->internal_elf_sym.st_info))
7689 {
7690 default:
7691 break;
7692 case STT_FILE:
7693 filename = bfd_asymbol_name (&q->symbol);
7694 break;
7695 case STT_FUNC:
7696 case STT_NOTYPE:
7697 /* Skip mapping symbols. */
7698 if ((q->symbol.flags & BSF_LOCAL)
7699 && (bfd_is_aarch64_special_symbol_name
7700 (q->symbol.name, BFD_AARCH64_SPECIAL_SYM_TYPE_ANY)))
7701 continue;
7702 /* Fall through. */
7703 if (bfd_get_section (&q->symbol) == section
7704 && q->symbol.value >= low_func && q->symbol.value <= offset)
7705 {
7706 func = (asymbol *) q;
7707 low_func = q->symbol.value;
7708 }
7709 break;
7710 }
7711 }
7712
7713 if (func == NULL)
7714 return FALSE;
7715
7716 if (filename_ptr)
7717 *filename_ptr = filename;
7718 if (functionname_ptr)
7719 *functionname_ptr = bfd_asymbol_name (func);
7720
7721 return TRUE;
7722}
7723
7724
7725/* Find the nearest line to a particular section and offset, for error
7726 reporting. This code is a duplicate of the code in elf.c, except
7727 that it uses aarch64_elf_find_function. */
7728
7729static bfd_boolean
cec5225b 7730elfNN_aarch64_find_nearest_line (bfd *abfd,
a06ea964 7731 asymbol **symbols,
fb167eb2 7732 asection *section,
a06ea964
NC		 7733 bfd_vma offset,
7734 const char **filename_ptr,
7735 const char **functionname_ptr,
fb167eb2
AM		 7736 unsigned int *line_ptr,
7737 unsigned int *discriminator_ptr)
a06ea964
NC		 7738{
7739 bfd_boolean found = FALSE;
7740
fb167eb2 7741 if (_bfd_dwarf2_find_nearest_line (abfd, symbols, NULL, section, offset,
a06ea964 7742 filename_ptr, functionname_ptr,
fb167eb2
AM		 7743 line_ptr, discriminator_ptr,
7744 dwarf_debug_sections, 0,
a06ea964
NC		 7745 &elf_tdata (abfd)->dwarf2_find_line_info))
7746 {
7747 if (!*functionname_ptr)
fb167eb2 7748 aarch64_elf_find_function (abfd, symbols, section, offset,
a06ea964
NC		 7749 *filename_ptr ? NULL : filename_ptr,
7750 functionname_ptr);
7751
7752 return TRUE;
7753 }
7754
fb167eb2
AM		 7755 /* Skip _bfd_dwarf1_find_nearest_line since no known AArch64
7756 toolchain uses DWARF1. */
7757
a06ea964
NC		 7758 if (!_bfd_stab_section_find_nearest_line (abfd, symbols, section, offset,
7759 &found, filename_ptr,
7760 functionname_ptr, line_ptr,
7761 &elf_tdata (abfd)->line_info))
7762 return FALSE;
7763
7764 if (found && (*functionname_ptr || *line_ptr))
7765 return TRUE;
7766
7767 if (symbols == NULL)
7768 return FALSE;
7769
fb167eb2 7770 if (!aarch64_elf_find_function (abfd, symbols, section, offset,
a06ea964
NC		 7771 filename_ptr, functionname_ptr))
7772 return FALSE;
7773
7774 *line_ptr = 0;
7775 return TRUE;
7776}
7777
7778static bfd_boolean
cec5225b 7779elfNN_aarch64_find_inliner_info (bfd *abfd,
a06ea964
NC		 7780 const char **filename_ptr,
7781 const char **functionname_ptr,
7782 unsigned int *line_ptr)
7783{
7784 bfd_boolean found;
7785 found = _bfd_dwarf2_find_inliner_info
7786 (abfd, filename_ptr,
7787 functionname_ptr, line_ptr, &elf_tdata (abfd)->dwarf2_find_line_info);
7788 return found;
7789}
7790
7791
7792static void
cec5225b 7793elfNN_aarch64_post_process_headers (bfd *abfd,
1419bbe5 7794 struct bfd_link_info *link_info)
a06ea964
NC		 7795{
7796 Elf_Internal_Ehdr *i_ehdrp; /* ELF file header, internal form. */
7797
7798 i_ehdrp = elf_elfheader (abfd);
a06ea964 7799 i_ehdrp->e_ident[EI_ABIVERSION] = AARCH64_ELF_ABI_VERSION;
1419bbe5 7800
78245035 7801 _bfd_elf_post_process_headers (abfd, link_info);
a06ea964
NC		 7802}
7803
7804static enum elf_reloc_type_class
cec5225b 7805elfNN_aarch64_reloc_type_class (const struct bfd_link_info *info ATTRIBUTE_UNUSED,
7e612e98
AM		 7806 const asection *rel_sec ATTRIBUTE_UNUSED,
7807 const Elf_Internal_Rela *rela)
a06ea964 7808{
f2e6a843
SN		 7809 struct elf_aarch64_link_hash_table *htab = elf_aarch64_hash_table (info);
7810
7811 if (htab->root.dynsym != NULL
7812 && htab->root.dynsym->contents != NULL)
7813 {
7814 /* Check relocation against STT_GNU_IFUNC symbol if there are
7815 dynamic symbols. */
7816 bfd *abfd = info->output_bfd;
7817 const struct elf_backend_data *bed = get_elf_backend_data (abfd);
7818 unsigned long r_symndx = ELFNN_R_SYM (rela->r_info);
7819 if (r_symndx != STN_UNDEF)
7820 {
7821 Elf_Internal_Sym sym;
7822 if (!bed->s->swap_symbol_in (abfd,
7823 (htab->root.dynsym->contents
7824 + r_symndx * bed->s->sizeof_sym),
7825 0, &sym))
7826 {
7827 /* xgettext:c-format */
871b3ab2 7828 _bfd_error_handler (_("%pB symbol number %lu references"
f2e6a843
SN		 7829 " nonexistent SHT_SYMTAB_SHNDX section"),
7830 abfd, r_symndx);
7831 /* Ideally an error class should be returned here. */
7832 }
7833 else if (ELF_ST_TYPE (sym.st_info) == STT_GNU_IFUNC)
7834 return reloc_class_ifunc;
7835 }
7836 }
7837
cec5225b 7838 switch ((int) ELFNN_R_TYPE (rela->r_info))
a06ea964 7839 {
f2e6a843
SN		 7840 case AARCH64_R (IRELATIVE):
7841 return reloc_class_ifunc;
a6bb11b2 7842 case AARCH64_R (RELATIVE):
a06ea964 7843 return reloc_class_relative;
a6bb11b2 7844 case AARCH64_R (JUMP_SLOT):
a06ea964 7845 return reloc_class_plt;
a6bb11b2 7846 case AARCH64_R (COPY):
a06ea964
NC		 7847 return reloc_class_copy;
7848 default:
7849 return reloc_class_normal;
7850 }
7851}
7852
a06ea964
NC		 7853/* Handle an AArch64 specific section when reading an object file. This is
7854 called when bfd_section_from_shdr finds a section with an unknown
7855 type. */
7856
7857static bfd_boolean
cec5225b 7858elfNN_aarch64_section_from_shdr (bfd *abfd,
a06ea964
NC		 7859 Elf_Internal_Shdr *hdr,
7860 const char *name, int shindex)
7861{
7862 /* There ought to be a place to keep ELF backend specific flags, but
7863 at the moment there isn't one. We just keep track of the
7864 sections by their name, instead. Fortunately, the ABI gives
7865 names for all the AArch64 specific sections, so we will probably get
7866 away with this. */
7867 switch (hdr->sh_type)
7868 {
7869 case SHT_AARCH64_ATTRIBUTES:
7870 break;
7871
7872 default:
7873 return FALSE;
7874 }
7875
7876 if (!_bfd_elf_make_section_from_shdr (abfd, hdr, name, shindex))
7877 return FALSE;
7878
7879 return TRUE;
7880}
7881
7882/* A structure used to record a list of sections, independently
7883 of the next and prev fields in the asection structure. */
7884typedef struct section_list
7885{
7886 asection *sec;
7887 struct section_list *next;
7888 struct section_list *prev;
7889}
7890section_list;
7891
7892/* Unfortunately we need to keep a list of sections for which
7893 an _aarch64_elf_section_data structure has been allocated. This
cec5225b 7894 is because it is possible for functions like elfNN_aarch64_write_section
a06ea964
NC		 7895 to be called on a section which has had an elf_data_structure
7896 allocated for it (and so the used_by_bfd field is valid) but
7897 for which the AArch64 extended version of this structure - the
7898 _aarch64_elf_section_data structure - has not been allocated. */
7899static section_list *sections_with_aarch64_elf_section_data = NULL;
7900
7901static void
7902record_section_with_aarch64_elf_section_data (asection *sec)
7903{
7904 struct section_list *entry;
7905
7906 entry = bfd_malloc (sizeof (*entry));
7907 if (entry == NULL)
7908 return;
7909 entry->sec = sec;
7910 entry->next = sections_with_aarch64_elf_section_data;
7911 entry->prev = NULL;
7912 if (entry->next != NULL)
7913 entry->next->prev = entry;
7914 sections_with_aarch64_elf_section_data = entry;
7915}
7916
7917static struct section_list *
7918find_aarch64_elf_section_entry (asection *sec)
7919{
7920 struct section_list *entry;
7921 static struct section_list *last_entry = NULL;
7922
7923 /* This is a short cut for the typical case where the sections are added
7924 to the sections_with_aarch64_elf_section_data list in forward order and
7925 then looked up here in backwards order. This makes a real difference
7926 to the ld-srec/sec64k.exp linker test. */
7927 entry = sections_with_aarch64_elf_section_data;
7928 if (last_entry != NULL)
7929 {
7930 if (last_entry->sec == sec)
7931 entry = last_entry;
7932 else if (last_entry->next != NULL && last_entry->next->sec == sec)
7933 entry = last_entry->next;
7934 }
7935
7936 for (; entry; entry = entry->next)
7937 if (entry->sec == sec)
7938 break;
7939
7940 if (entry)
7941 /* Record the entry prior to this one - it is the entry we are
7942 most likely to want to locate next time. Also this way if we
7943 have been called from
7944 unrecord_section_with_aarch64_elf_section_data () we will not
7945 be caching a pointer that is about to be freed. */
7946 last_entry = entry->prev;
7947
7948 return entry;
7949}
7950
7951static void
7952unrecord_section_with_aarch64_elf_section_data (asection *sec)
7953{
7954 struct section_list *entry;
7955
7956 entry = find_aarch64_elf_section_entry (sec);
7957
7958 if (entry)
7959 {
7960 if (entry->prev != NULL)
7961 entry->prev->next = entry->next;
7962 if (entry->next != NULL)
7963 entry->next->prev = entry->prev;
7964 if (entry == sections_with_aarch64_elf_section_data)
7965 sections_with_aarch64_elf_section_data = entry->next;
7966 free (entry);
7967 }
7968}
7969
7970
7971typedef struct
7972{
7973 void *finfo;
7974 struct bfd_link_info *info;
7975 asection *sec;
7976 int sec_shndx;
7977 int (*func) (void *, const char *, Elf_Internal_Sym *,
7978 asection *, struct elf_link_hash_entry *);
7979} output_arch_syminfo;
7980
7981enum map_symbol_type
7982{
7983 AARCH64_MAP_INSN,
7984 AARCH64_MAP_DATA
7985};
7986
7987
7988/* Output a single mapping symbol. */
7989
7990static bfd_boolean
cec5225b 7991elfNN_aarch64_output_map_sym (output_arch_syminfo *osi,
a06ea964
NC		 7992 enum map_symbol_type type, bfd_vma offset)
7993{
7994 static const char *names[2] = { "$x", "$d" };
7995 Elf_Internal_Sym sym;
7996
7997 sym.st_value = (osi->sec->output_section->vma
7998 + osi->sec->output_offset + offset);
7999 sym.st_size = 0;
8000 sym.st_other = 0;
8001 sym.st_info = ELF_ST_INFO (STB_LOCAL, STT_NOTYPE);
8002 sym.st_shndx = osi->sec_shndx;
8003 return osi->func (osi->finfo, names[type], &sym, osi->sec, NULL) == 1;
8004}
8005
a06ea964
NC		 8006/* Output a single local symbol for a generated stub. */
8007
8008static bfd_boolean
cec5225b 8009elfNN_aarch64_output_stub_sym (output_arch_syminfo *osi, const char *name,
a06ea964
NC		 8010 bfd_vma offset, bfd_vma size)
8011{
8012 Elf_Internal_Sym sym;
8013
8014 sym.st_value = (osi->sec->output_section->vma
8015 + osi->sec->output_offset + offset);
8016 sym.st_size = size;
8017 sym.st_other = 0;
8018 sym.st_info = ELF_ST_INFO (STB_LOCAL, STT_FUNC);
8019 sym.st_shndx = osi->sec_shndx;
8020 return osi->func (osi->finfo, name, &sym, osi->sec, NULL) == 1;
8021}
8022
8023static bfd_boolean
8024aarch64_map_one_stub (struct bfd_hash_entry *gen_entry, void *in_arg)
8025{
cec5225b 8026 struct elf_aarch64_stub_hash_entry *stub_entry;
a06ea964
NC		 8027 asection *stub_sec;
8028 bfd_vma addr;
8029 char *stub_name;
8030 output_arch_syminfo *osi;
8031
8032 /* Massage our args to the form they really have. */
cec5225b 8033 stub_entry = (struct elf_aarch64_stub_hash_entry *) gen_entry;
a06ea964
NC		 8034 osi = (output_arch_syminfo *) in_arg;
8035
8036 stub_sec = stub_entry->stub_sec;
8037
8038 /* Ensure this stub is attached to the current section being
8039 processed. */
8040 if (stub_sec != osi->sec)
8041 return TRUE;
8042
8043 addr = (bfd_vma) stub_entry->stub_offset;
8044
8045 stub_name = stub_entry->output_name;
8046
8047 switch (stub_entry->stub_type)
8048 {
8049 case aarch64_stub_adrp_branch:
cec5225b 8050 if (!elfNN_aarch64_output_stub_sym (osi, stub_name, addr,
a06ea964
NC		 8051 sizeof (aarch64_adrp_branch_stub)))
8052 return FALSE;
cec5225b 8053 if (!elfNN_aarch64_output_map_sym (osi, AARCH64_MAP_INSN, addr))
a06ea964
NC		 8054 return FALSE;
8055 break;
8056 case aarch64_stub_long_branch:
cec5225b 8057 if (!elfNN_aarch64_output_stub_sym
a06ea964
NC		 8058 (osi, stub_name, addr, sizeof (aarch64_long_branch_stub)))
8059 return FALSE;
cec5225b 8060 if (!elfNN_aarch64_output_map_sym (osi, AARCH64_MAP_INSN, addr))
a06ea964 8061 return FALSE;
cec5225b 8062 if (!elfNN_aarch64_output_map_sym (osi, AARCH64_MAP_DATA, addr + 16))
a06ea964
NC		 8063 return FALSE;
8064 break;
68fcca92
JW		 8065 case aarch64_stub_erratum_835769_veneer:
8066 if (!elfNN_aarch64_output_stub_sym (osi, stub_name, addr,
8067 sizeof (aarch64_erratum_835769_stub)))
8068 return FALSE;
8069 if (!elfNN_aarch64_output_map_sym (osi, AARCH64_MAP_INSN, addr))
8070 return FALSE;
8071 break;
4106101c
MS		 8072 case aarch64_stub_erratum_843419_veneer:
8073 if (!elfNN_aarch64_output_stub_sym (osi, stub_name, addr,
8074 sizeof (aarch64_erratum_843419_stub)))
8075 return FALSE;
8076 if (!elfNN_aarch64_output_map_sym (osi, AARCH64_MAP_INSN, addr))
8077 return FALSE;
8078 break;
8079
a06ea964 8080 default:
8e2fe09f 8081 abort ();
a06ea964
NC		 8082 }
8083
8084 return TRUE;
8085}
8086
8087/* Output mapping symbols for linker generated sections. */
8088
8089static bfd_boolean
cec5225b 8090elfNN_aarch64_output_arch_local_syms (bfd *output_bfd,
a06ea964
NC		 8091 struct bfd_link_info *info,
8092 void *finfo,
8093 int (*func) (void *, const char *,
8094 Elf_Internal_Sym *,
8095 asection *,
8096 struct elf_link_hash_entry
8097 *))
8098{
8099 output_arch_syminfo osi;
cec5225b 8100 struct elf_aarch64_link_hash_table *htab;
a06ea964 8101
cec5225b 8102 htab = elf_aarch64_hash_table (info);
a06ea964
NC		 8103
8104 osi.finfo = finfo;
8105 osi.info = info;
8106 osi.func = func;
8107
8108 /* Long calls stubs. */
8109 if (htab->stub_bfd && htab->stub_bfd->sections)
8110 {
8111 asection *stub_sec;
8112
8113 for (stub_sec = htab->stub_bfd->sections;
8114 stub_sec != NULL; stub_sec = stub_sec->next)
8115 {
8116 /* Ignore non-stub sections. */
8117 if (!strstr (stub_sec->name, STUB_SUFFIX))
8118 continue;
8119
8120 osi.sec = stub_sec;
8121
8122 osi.sec_shndx = _bfd_elf_section_from_bfd_section
8123 (output_bfd, osi.sec->output_section);
8124
61865519
MS		 8125 /* The first instruction in a stub is always a branch. */
8126 if (!elfNN_aarch64_output_map_sym (&osi, AARCH64_MAP_INSN, 0))
8127 return FALSE;
8128
a06ea964
NC		 8129 bfd_hash_traverse (&htab->stub_hash_table, aarch64_map_one_stub,
8130 &osi);
8131 }
8132 }
8133
8134 /* Finally, output mapping symbols for the PLT. */
8135 if (!htab->root.splt || htab->root.splt->size == 0)
8136 return TRUE;
8137
a06ea964
NC		 8138 osi.sec_shndx = _bfd_elf_section_from_bfd_section
8139 (output_bfd, htab->root.splt->output_section);
8140 osi.sec = htab->root.splt;
8141
73524045 8142 elfNN_aarch64_output_map_sym (&osi, AARCH64_MAP_INSN, 0);
a06ea964
NC		 8143
8144 return TRUE;
8145
8146}
8147
8148/* Allocate target specific section data. */
8149
8150static bfd_boolean
cec5225b 8151elfNN_aarch64_new_section_hook (bfd *abfd, asection *sec)
a06ea964
NC		 8152{
8153 if (!sec->used_by_bfd)
8154 {
8155 _aarch64_elf_section_data *sdata;
8156 bfd_size_type amt = sizeof (*sdata);
8157
8158 sdata = bfd_zalloc (abfd, amt);
8159 if (sdata == NULL)
8160 return FALSE;
8161 sec->used_by_bfd = sdata;
8162 }
8163
8164 record_section_with_aarch64_elf_section_data (sec);
8165
8166 return _bfd_elf_new_section_hook (abfd, sec);
8167}
8168
8169
8170static void
8171unrecord_section_via_map_over_sections (bfd *abfd ATTRIBUTE_UNUSED,
8172 asection *sec,
8173 void *ignore ATTRIBUTE_UNUSED)
8174{
8175 unrecord_section_with_aarch64_elf_section_data (sec);
8176}
8177
8178static bfd_boolean
cec5225b 8179elfNN_aarch64_close_and_cleanup (bfd *abfd)
a06ea964
NC		 8180{
8181 if (abfd->sections)
8182 bfd_map_over_sections (abfd,
8183 unrecord_section_via_map_over_sections, NULL);
8184
8185 return _bfd_elf_close_and_cleanup (abfd);
8186}
8187
8188static bfd_boolean
cec5225b 8189elfNN_aarch64_bfd_free_cached_info (bfd *abfd)
a06ea964
NC		 8190{
8191 if (abfd->sections)
8192 bfd_map_over_sections (abfd,
8193 unrecord_section_via_map_over_sections, NULL);
8194
8195 return _bfd_free_cached_info (abfd);
8196}
8197
a06ea964
NC		 8198/* Create dynamic sections. This is different from the ARM backend in that
8199 the got, plt, gotplt and their relocation sections are all created in the
8200 standard part of the bfd elf backend. */
8201
8202static bfd_boolean
cec5225b 8203elfNN_aarch64_create_dynamic_sections (bfd *dynobj,
a06ea964
NC		 8204 struct bfd_link_info *info)
8205{
cc0efaa8
MS		 8206 /* We need to create .got section. */
8207 if (!aarch64_elf_create_got_section (dynobj, info))
8208 return FALSE;
a06ea964 8209
9d19e4fd 8210 return _bfd_elf_create_dynamic_sections (dynobj, info);
a06ea964
NC		 8211}
8212
8213
8214/* Allocate space in .plt, .got and associated reloc sections for
8215 dynamic relocs. */
8216
8217static bfd_boolean
cec5225b 8218elfNN_aarch64_allocate_dynrelocs (struct elf_link_hash_entry *h, void *inf)
a06ea964
NC		 8219{
8220 struct bfd_link_info *info;
cec5225b
YZ		 8221 struct elf_aarch64_link_hash_table *htab;
8222 struct elf_aarch64_link_hash_entry *eh;
a06ea964
NC		 8223 struct elf_dyn_relocs *p;
8224
8225 /* An example of a bfd_link_hash_indirect symbol is versioned
8226 symbol. For example: __gxx_personality_v0(bfd_link_hash_indirect)
8227 -> __gxx_personality_v0(bfd_link_hash_defined)
8228
8229 There is no need to process bfd_link_hash_indirect symbols here
8230 because we will also be presented with the concrete instance of
cec5225b 8231 the symbol and elfNN_aarch64_copy_indirect_symbol () will have been
a06ea964 8232 called to copy all relevant data from the generic to the concrete
2d0ca824 8233 symbol instance. */
a06ea964
NC		 8234 if (h->root.type == bfd_link_hash_indirect)
8235 return TRUE;
8236
8237 if (h->root.type == bfd_link_hash_warning)
8238 h = (struct elf_link_hash_entry *) h->root.u.i.link;
8239
8240 info = (struct bfd_link_info *) inf;
cec5225b 8241 htab = elf_aarch64_hash_table (info);
a06ea964 8242
1419bbe5
WN		 8243 /* Since STT_GNU_IFUNC symbol must go through PLT, we handle it
8244 here if it is defined and referenced in a non-shared object. */
8245 if (h->type == STT_GNU_IFUNC
8246 && h->def_regular)
8247 return TRUE;
8248 else if (htab->root.dynamic_sections_created && h->plt.refcount > 0)
a06ea964
NC		 8249 {
8250 /* Make sure this symbol is output as a dynamic symbol.
07d6d2b8 8251 Undefined weak syms won't yet be marked as dynamic. */
ff07562f
JW		 8252 if (h->dynindx == -1 && !h->forced_local
8253 && h->root.type == bfd_link_hash_undefweak)
a06ea964
NC		 8254 {
8255 if (!bfd_elf_link_record_dynamic_symbol (info, h))
8256 return FALSE;
8257 }
8258
0e1862bb 8259 if (bfd_link_pic (info) || WILL_CALL_FINISH_DYNAMIC_SYMBOL (1, 0, h))
a06ea964
NC		 8260 {
8261 asection *s = htab->root.splt;
8262
8263 /* If this is the first .plt entry, make room for the special
8264 first entry. */
8265 if (s->size == 0)
8266 s->size += htab->plt_header_size;
8267
8268 h->plt.offset = s->size;
8269
8270 /* If this symbol is not defined in a regular file, and we are
8271 not generating a shared library, then set the symbol to this
8272 location in the .plt. This is required to make function
8273 pointers compare as equal between the normal executable and
8274 the shared library. */
0e1862bb 8275 if (!bfd_link_pic (info) && !h->def_regular)
a06ea964
NC		 8276 {
8277 h->root.u.def.section = s;
8278 h->root.u.def.value = h->plt.offset;
8279 }
8280
8281 /* Make room for this entry. For now we only create the
8282 small model PLT entries. We later need to find a way
8283 of relaxing into these from the large model PLT entries. */
8284 s->size += PLT_SMALL_ENTRY_SIZE;
8285
8286 /* We also need to make an entry in the .got.plt section, which
8287 will be placed in the .got section by the linker script. */
8288 htab->root.sgotplt->size += GOT_ENTRY_SIZE;
8289
8290 /* We also need to make an entry in the .rela.plt section. */
8291 htab->root.srelplt->size += RELOC_SIZE (htab);
8292
8293 /* We need to ensure that all GOT entries that serve the PLT
8294 are consecutive with the special GOT slots [0] [1] and
8295 [2]. Any addtional relocations, such as
8296 R_AARCH64_TLSDESC, must be placed after the PLT related
8297 entries. We abuse the reloc_count such that during
8298 sizing we adjust reloc_count to indicate the number of
8299 PLT related reserved entries. In subsequent phases when
8300 filling in the contents of the reloc entries, PLT related
8301 entries are placed by computing their PLT index (0
8302 .. reloc_count). While other none PLT relocs are placed
8303 at the slot indicated by reloc_count and reloc_count is
8304 updated. */
8305
8306 htab->root.srelplt->reloc_count++;
8307 }
8308 else
8309 {
8310 h->plt.offset = (bfd_vma) - 1;
8311 h->needs_plt = 0;
8312 }
8313 }
8314 else
8315 {
8316 h->plt.offset = (bfd_vma) - 1;
8317 h->needs_plt = 0;
8318 }
8319
cec5225b 8320 eh = (struct elf_aarch64_link_hash_entry *) h;
a06ea964
NC		 8321 eh->tlsdesc_got_jump_table_offset = (bfd_vma) - 1;
8322
8323 if (h->got.refcount > 0)
8324 {
8325 bfd_boolean dyn;
cec5225b 8326 unsigned got_type = elf_aarch64_hash_entry (h)->got_type;
a06ea964
NC		 8327
8328 h->got.offset = (bfd_vma) - 1;
8329
8330 dyn = htab->root.dynamic_sections_created;
8331
8332 /* Make sure this symbol is output as a dynamic symbol.
07d6d2b8 8333 Undefined weak syms won't yet be marked as dynamic. */
ff07562f
JW		 8334 if (dyn && h->dynindx == -1 && !h->forced_local
8335 && h->root.type == bfd_link_hash_undefweak)
a06ea964
NC		 8336 {
8337 if (!bfd_elf_link_record_dynamic_symbol (info, h))
8338 return FALSE;
8339 }
8340
8341 if (got_type == GOT_UNKNOWN)
8342 {
8343 }
8344 else if (got_type == GOT_NORMAL)
8345 {
8346 h->got.offset = htab->root.sgot->size;
8347 htab->root.sgot->size += GOT_ENTRY_SIZE;
8348 if ((ELF_ST_VISIBILITY (h->other) == STV_DEFAULT
8349 || h->root.type != bfd_link_hash_undefweak)
0e1862bb 8350 && (bfd_link_pic (info)
a377ae2a
SN		 8351 || WILL_CALL_FINISH_DYNAMIC_SYMBOL (dyn, 0, h))
8352 /* Undefined weak symbol in static PIE resolves to 0 without
8353 any dynamic relocations. */
8354 && !UNDEFWEAK_NO_DYNAMIC_RELOC (info, h))
a06ea964
NC		 8355 {
8356 htab->root.srelgot->size += RELOC_SIZE (htab);
8357 }
8358 }
8359 else
8360 {
8361 int indx;
8362 if (got_type & GOT_TLSDESC_GD)
8363 {
8364 eh->tlsdesc_got_jump_table_offset =
8365 (htab->root.sgotplt->size
8366 - aarch64_compute_jump_table_size (htab));
8367 htab->root.sgotplt->size += GOT_ENTRY_SIZE * 2;
8368 h->got.offset = (bfd_vma) - 2;
8369 }
8370
8371 if (got_type & GOT_TLS_GD)
8372 {
8373 h->got.offset = htab->root.sgot->size;
8374 htab->root.sgot->size += GOT_ENTRY_SIZE * 2;
8375 }
8376
8377 if (got_type & GOT_TLS_IE)
8378 {
8379 h->got.offset = htab->root.sgot->size;
8380 htab->root.sgot->size += GOT_ENTRY_SIZE;
8381 }
8382
8383 indx = h && h->dynindx != -1 ? h->dynindx : 0;
8384 if ((ELF_ST_VISIBILITY (h->other) == STV_DEFAULT
8385 || h->root.type != bfd_link_hash_undefweak)
6dda7875 8386 && (!bfd_link_executable (info)
a06ea964
NC		 8387 || indx != 0
8388 || WILL_CALL_FINISH_DYNAMIC_SYMBOL (dyn, 0, h)))
8389 {
8390 if (got_type & GOT_TLSDESC_GD)
8391 {
8392 htab->root.srelplt->size += RELOC_SIZE (htab);
8393 /* Note reloc_count not incremented here! We have
8394 already adjusted reloc_count for this relocation
8395 type. */
8396
8397 /* TLSDESC PLT is now needed, but not yet determined. */
8398 htab->tlsdesc_plt = (bfd_vma) - 1;
8399 }
8400
8401 if (got_type & GOT_TLS_GD)
8402 htab->root.srelgot->size += RELOC_SIZE (htab) * 2;
8403
8404 if (got_type & GOT_TLS_IE)
8405 htab->root.srelgot->size += RELOC_SIZE (htab);
8406 }
8407 }
8408 }
8409 else
8410 {
8411 h->got.offset = (bfd_vma) - 1;
8412 }
8413
8414 if (eh->dyn_relocs == NULL)
8415 return TRUE;
8416
8417 /* In the shared -Bsymbolic case, discard space allocated for
8418 dynamic pc-relative relocs against symbols which turn out to be
8419 defined in regular objects. For the normal shared case, discard
8420 space for pc-relative relocs that have become local due to symbol
8421 visibility changes. */
8422
0e1862bb 8423 if (bfd_link_pic (info))
a06ea964
NC		 8424 {
8425 /* Relocs that use pc_count are those that appear on a call
07d6d2b8
AM		 8426 insn, or certain REL relocs that can generated via assembly.
8427 We want calls to protected symbols to resolve directly to the
8428 function rather than going via the plt. If people want
8429 function pointer comparisons to work as expected then they
8430 should avoid writing weird assembly. */
a06ea964
NC		 8431 if (SYMBOL_CALLS_LOCAL (info, h))
8432 {
8433 struct elf_dyn_relocs **pp;
8434
8435 for (pp = &eh->dyn_relocs; (p = *pp) != NULL;)
8436 {
8437 p->count -= p->pc_count;
8438 p->pc_count = 0;
8439 if (p->count == 0)
8440 *pp = p->next;
8441 else
8442 pp = &p->next;
8443 }
8444 }
8445
8446 /* Also discard relocs on undefined weak syms with non-default
07d6d2b8 8447 visibility. */
a06ea964
NC		 8448 if (eh->dyn_relocs != NULL && h->root.type == bfd_link_hash_undefweak)
8449 {
ddb7fd0f
L		 8450 if (ELF_ST_VISIBILITY (h->other) != STV_DEFAULT
8451 || UNDEFWEAK_NO_DYNAMIC_RELOC (info, h))
a06ea964
NC		 8452 eh->dyn_relocs = NULL;
8453
8454 /* Make sure undefined weak symbols are output as a dynamic
8455 symbol in PIEs. */
8456 else if (h->dynindx == -1
8457 && !h->forced_local
ff07562f 8458 && h->root.type == bfd_link_hash_undefweak
a06ea964
NC		 8459 && !bfd_elf_link_record_dynamic_symbol (info, h))
8460 return FALSE;
8461 }
8462
8463 }
8464 else if (ELIMINATE_COPY_RELOCS)
8465 {
8466 /* For the non-shared case, discard space for relocs against
07d6d2b8
AM		 8467 symbols which turn out to need copy relocs or are not
8468 dynamic. */
a06ea964
NC		 8469
8470 if (!h->non_got_ref
8471 && ((h->def_dynamic
8472 && !h->def_regular)
8473 || (htab->root.dynamic_sections_created
8474 && (h->root.type == bfd_link_hash_undefweak
8475 || h->root.type == bfd_link_hash_undefined))))
8476 {
8477 /* Make sure this symbol is output as a dynamic symbol.
8478 Undefined weak syms won't yet be marked as dynamic. */
8479 if (h->dynindx == -1
8480 && !h->forced_local
ff07562f 8481 && h->root.type == bfd_link_hash_undefweak
a06ea964
NC		 8482 && !bfd_elf_link_record_dynamic_symbol (info, h))
8483 return FALSE;
8484
8485 /* If that succeeded, we know we'll be keeping all the
8486 relocs. */
8487 if (h->dynindx != -1)
8488 goto keep;
8489 }
8490
8491 eh->dyn_relocs = NULL;
8492
8493 keep:;
8494 }
8495
8496 /* Finally, allocate space. */
8497 for (p = eh->dyn_relocs; p != NULL; p = p->next)
8498 {
8499 asection *sreloc;
8500
8501 sreloc = elf_section_data (p->sec)->sreloc;
8502
8503 BFD_ASSERT (sreloc != NULL);
8504
8505 sreloc->size += p->count * RELOC_SIZE (htab);
8506 }
8507
8508 return TRUE;
8509}
8510
1419bbe5
WN		 8511/* Allocate space in .plt, .got and associated reloc sections for
8512 ifunc dynamic relocs. */
8513
8514static bfd_boolean
8515elfNN_aarch64_allocate_ifunc_dynrelocs (struct elf_link_hash_entry *h,
8516 void *inf)
8517{
8518 struct bfd_link_info *info;
8519 struct elf_aarch64_link_hash_table *htab;
8520 struct elf_aarch64_link_hash_entry *eh;
8521
8522 /* An example of a bfd_link_hash_indirect symbol is versioned
8523 symbol. For example: __gxx_personality_v0(bfd_link_hash_indirect)
8524 -> __gxx_personality_v0(bfd_link_hash_defined)
8525
8526 There is no need to process bfd_link_hash_indirect symbols here
8527 because we will also be presented with the concrete instance of
8528 the symbol and elfNN_aarch64_copy_indirect_symbol () will have been
8529 called to copy all relevant data from the generic to the concrete
2d0ca824 8530 symbol instance. */
1419bbe5
WN		 8531 if (h->root.type == bfd_link_hash_indirect)
8532 return TRUE;
8533
8534 if (h->root.type == bfd_link_hash_warning)
8535 h = (struct elf_link_hash_entry *) h->root.u.i.link;
8536
8537 info = (struct bfd_link_info *) inf;
8538 htab = elf_aarch64_hash_table (info);
8539
8540 eh = (struct elf_aarch64_link_hash_entry *) h;
8541
8542 /* Since STT_GNU_IFUNC symbol must go through PLT, we handle it
8543 here if it is defined and referenced in a non-shared object. */
8544 if (h->type == STT_GNU_IFUNC
8545 && h->def_regular)
8546 return _bfd_elf_allocate_ifunc_dyn_relocs (info, h,
8547 &eh->dyn_relocs,
2df3368d 8548 NULL,
1419bbe5
WN		 8549 htab->plt_entry_size,
8550 htab->plt_header_size,
233cc9c1
L		 8551 GOT_ENTRY_SIZE,
8552 FALSE);
1419bbe5
WN		 8553 return TRUE;
8554}
8555
8556/* Allocate space in .plt, .got and associated reloc sections for
8557 local dynamic relocs. */
8558
8559static bfd_boolean
8560elfNN_aarch64_allocate_local_dynrelocs (void **slot, void *inf)
8561{
8562 struct elf_link_hash_entry *h
8563 = (struct elf_link_hash_entry *) *slot;
8564
8565 if (h->type != STT_GNU_IFUNC
8566 || !h->def_regular
8567 || !h->ref_regular
8568 || !h->forced_local
8569 || h->root.type != bfd_link_hash_defined)
8570 abort ();
8571
8572 return elfNN_aarch64_allocate_dynrelocs (h, inf);
8573}
8574
8575/* Allocate space in .plt, .got and associated reloc sections for
8576 local ifunc dynamic relocs. */
8577
8578static bfd_boolean
8579elfNN_aarch64_allocate_local_ifunc_dynrelocs (void **slot, void *inf)
8580{
8581 struct elf_link_hash_entry *h
8582 = (struct elf_link_hash_entry *) *slot;
8583
8584 if (h->type != STT_GNU_IFUNC
8585 || !h->def_regular
8586 || !h->ref_regular
8587 || !h->forced_local
8588 || h->root.type != bfd_link_hash_defined)
8589 abort ();
8590
8591 return elfNN_aarch64_allocate_ifunc_dynrelocs (h, inf);
8592}
a06ea964 8593
63c1f59d
AM		 8594/* Set DF_TEXTREL if we find any dynamic relocs that apply to
8595 read-only sections. */
c2170589
JW		 8596
8597static bfd_boolean
63c1f59d 8598maybe_set_textrel (struct elf_link_hash_entry *h, void *info_p)
c2170589 8599{
63c1f59d 8600 asection *sec;
c2170589 8601
63c1f59d
AM		 8602 if (h->root.type == bfd_link_hash_indirect)
8603 return TRUE;
c2170589 8604
63c1f59d
AM		 8605 sec = readonly_dynrelocs (h);
8606 if (sec != NULL)
8607 {
8608 struct bfd_link_info *info = (struct bfd_link_info *) info_p;
c2170589 8609
63c1f59d
AM		 8610 info->flags |= DF_TEXTREL;
8611 info->callbacks->minfo
c1c8c1ef 8612 (_("%pB: dynamic relocation against `%pT' in read-only section `%pA'\n"),
63c1f59d 8613 sec->owner, h->root.root.string, sec);
c2170589 8614
63c1f59d
AM		 8615 /* Not an error, just cut short the traversal. */
8616 return FALSE;
c2170589
JW		 8617 }
8618 return TRUE;
8619}
8620
a06ea964
NC		 8621/* This is the most important function of all . Innocuosly named
8622 though ! */
2d0ca824 8623
a06ea964 8624static bfd_boolean
cec5225b 8625elfNN_aarch64_size_dynamic_sections (bfd *output_bfd ATTRIBUTE_UNUSED,
a06ea964
NC		 8626 struct bfd_link_info *info)
8627{
cec5225b 8628 struct elf_aarch64_link_hash_table *htab;
a06ea964
NC		 8629 bfd *dynobj;
8630 asection *s;
8631 bfd_boolean relocs;
8632 bfd *ibfd;
8633
cec5225b 8634 htab = elf_aarch64_hash_table ((info));
a06ea964
NC		 8635 dynobj = htab->root.dynobj;
8636
8637 BFD_ASSERT (dynobj != NULL);
8638
8639 if (htab->root.dynamic_sections_created)
8640 {
9b8b325a 8641 if (bfd_link_executable (info) && !info->nointerp)
a06ea964
NC		 8642 {
8643 s = bfd_get_linker_section (dynobj, ".interp");
8644 if (s == NULL)
8645 abort ();
8646 s->size = sizeof ELF_DYNAMIC_INTERPRETER;
8647 s->contents = (unsigned char *) ELF_DYNAMIC_INTERPRETER;
8648 }
8649 }
8650
8651 /* Set up .got offsets for local syms, and space for local dynamic
8652 relocs. */
c72f2fb2 8653 for (ibfd = info->input_bfds; ibfd != NULL; ibfd = ibfd->link.next)
a06ea964
NC		 8654 {
8655 struct elf_aarch64_local_symbol *locals = NULL;
8656 Elf_Internal_Shdr *symtab_hdr;
8657 asection *srel;
8658 unsigned int i;
8659
8660 if (!is_aarch64_elf (ibfd))
8661 continue;
8662
8663 for (s = ibfd->sections; s != NULL; s = s->next)
8664 {
8665 struct elf_dyn_relocs *p;
8666
8667 for (p = (struct elf_dyn_relocs *)
8668 (elf_section_data (s)->local_dynrel); p != NULL; p = p->next)
8669 {
8670 if (!bfd_is_abs_section (p->sec)
8671 && bfd_is_abs_section (p->sec->output_section))
8672 {
8673 /* Input section has been discarded, either because
8674 it is a copy of a linkonce section or due to
8675 linker script /DISCARD/, so we'll be discarding
8676 the relocs too. */
8677 }
8678 else if (p->count != 0)
8679 {
8680 srel = elf_section_data (p->sec)->sreloc;
8681 srel->size += p->count * RELOC_SIZE (htab);
8682 if ((p->sec->output_section->flags & SEC_READONLY) != 0)
8683 info->flags |= DF_TEXTREL;
8684 }
8685 }
8686 }
8687
cec5225b 8688 locals = elf_aarch64_locals (ibfd);
a06ea964
NC		 8689 if (!locals)
8690 continue;
8691
8692 symtab_hdr = &elf_symtab_hdr (ibfd);
8693 srel = htab->root.srelgot;
8694 for (i = 0; i < symtab_hdr->sh_info; i++)
8695 {
8696 locals[i].got_offset = (bfd_vma) - 1;
8697 locals[i].tlsdesc_got_jump_table_offset = (bfd_vma) - 1;
8698 if (locals[i].got_refcount > 0)
8699 {
8700 unsigned got_type = locals[i].got_type;
8701 if (got_type & GOT_TLSDESC_GD)
8702 {
8703 locals[i].tlsdesc_got_jump_table_offset =
8704 (htab->root.sgotplt->size
8705 - aarch64_compute_jump_table_size (htab));
8706 htab->root.sgotplt->size += GOT_ENTRY_SIZE * 2;
8707 locals[i].got_offset = (bfd_vma) - 2;
8708 }
8709
8710 if (got_type & GOT_TLS_GD)
8711 {
8712 locals[i].got_offset = htab->root.sgot->size;
8713 htab->root.sgot->size += GOT_ENTRY_SIZE * 2;
8714 }
8715
b53b1bed
JW		 8716 if (got_type & GOT_TLS_IE
8717 || got_type & GOT_NORMAL)
a06ea964
NC		 8718 {
8719 locals[i].got_offset = htab->root.sgot->size;
8720 htab->root.sgot->size += GOT_ENTRY_SIZE;
8721 }
8722
8723 if (got_type == GOT_UNKNOWN)
8724 {
8725 }
8726
0e1862bb 8727 if (bfd_link_pic (info))
a06ea964
NC		 8728 {
8729 if (got_type & GOT_TLSDESC_GD)
8730 {
8731 htab->root.srelplt->size += RELOC_SIZE (htab);
8732 /* Note RELOC_COUNT not incremented here! */
8733 htab->tlsdesc_plt = (bfd_vma) - 1;
8734 }
8735
8736 if (got_type & GOT_TLS_GD)
8737 htab->root.srelgot->size += RELOC_SIZE (htab) * 2;
8738
b53b1bed
JW		 8739 if (got_type & GOT_TLS_IE
8740 || got_type & GOT_NORMAL)
a06ea964
NC		 8741 htab->root.srelgot->size += RELOC_SIZE (htab);
8742 }
8743 }
8744 else
8745 {
8746 locals[i].got_refcount = (bfd_vma) - 1;
8747 }
8748 }
8749 }
8750
8751
8752 /* Allocate global sym .plt and .got entries, and space for global
8753 sym dynamic relocs. */
cec5225b 8754 elf_link_hash_traverse (&htab->root, elfNN_aarch64_allocate_dynrelocs,
a06ea964
NC		 8755 info);
8756
1419bbe5
WN		 8757 /* Allocate global ifunc sym .plt and .got entries, and space for global
8758 ifunc sym dynamic relocs. */
8759 elf_link_hash_traverse (&htab->root, elfNN_aarch64_allocate_ifunc_dynrelocs,
8760 info);
8761
8762 /* Allocate .plt and .got entries, and space for local symbols. */
8763 htab_traverse (htab->loc_hash_table,
8764 elfNN_aarch64_allocate_local_dynrelocs,
8765 info);
8766
8767 /* Allocate .plt and .got entries, and space for local ifunc symbols. */
8768 htab_traverse (htab->loc_hash_table,
8769 elfNN_aarch64_allocate_local_ifunc_dynrelocs,
8770 info);
a06ea964
NC		 8771
8772 /* For every jump slot reserved in the sgotplt, reloc_count is
8773 incremented. However, when we reserve space for TLS descriptors,
8774 it's not incremented, so in order to compute the space reserved
8775 for them, it suffices to multiply the reloc count by the jump
8776 slot size. */
8777
8778 if (htab->root.srelplt)
8847944f 8779 htab->sgotplt_jump_table_size = aarch64_compute_jump_table_size (htab);
a06ea964
NC		 8780
8781 if (htab->tlsdesc_plt)
8782 {
8783 if (htab->root.splt->size == 0)
8784 htab->root.splt->size += PLT_ENTRY_SIZE;
8785
8786 htab->tlsdesc_plt = htab->root.splt->size;
8787 htab->root.splt->size += PLT_TLSDESC_ENTRY_SIZE;
8788
8789 /* If we're not using lazy TLS relocations, don't generate the
07d6d2b8 8790 GOT entry required. */
a06ea964
NC		 8791 if (!(info->flags & DF_BIND_NOW))
8792 {
8793 htab->dt_tlsdesc_got = htab->root.sgot->size;
8794 htab->root.sgot->size += GOT_ENTRY_SIZE;
8795 }
8796 }
8797
68fcca92 8798 /* Init mapping symbols information to use later to distingush between
4106101c
MS		 8799 code and data while scanning for errata. */
8800 if (htab->fix_erratum_835769 || htab->fix_erratum_843419)
68fcca92
JW		 8801 for (ibfd = info->input_bfds; ibfd != NULL; ibfd = ibfd->link.next)
8802 {
8803 if (!is_aarch64_elf (ibfd))
8804 continue;
8805 bfd_elfNN_aarch64_init_maps (ibfd);
8806 }
8807
a06ea964
NC		 8808 /* We now have determined the sizes of the various dynamic sections.
8809 Allocate memory for them. */
8810 relocs = FALSE;
8811 for (s = dynobj->sections; s != NULL; s = s->next)
8812 {
8813 if ((s->flags & SEC_LINKER_CREATED) == 0)
8814 continue;
8815
8816 if (s == htab->root.splt
8817 || s == htab->root.sgot
8818 || s == htab->root.sgotplt
8819 || s == htab->root.iplt
9d19e4fd 8820 || s == htab->root.igotplt
5474d94f
AM		 8821 || s == htab->root.sdynbss
8822 || s == htab->root.sdynrelro)
a06ea964
NC		 8823 {
8824 /* Strip this section if we don't need it; see the
8825 comment below. */
8826 }
8827 else if (CONST_STRNEQ (bfd_get_section_name (dynobj, s), ".rela"))
8828 {
8829 if (s->size != 0 && s != htab->root.srelplt)
8830 relocs = TRUE;
8831
8832 /* We use the reloc_count field as a counter if we need
8833 to copy relocs into the output file. */
8834 if (s != htab->root.srelplt)
8835 s->reloc_count = 0;
8836 }
8837 else
8838 {
8839 /* It's not one of our sections, so don't allocate space. */
8840 continue;
8841 }
8842
8843 if (s->size == 0)
8844 {
8845 /* If we don't need this section, strip it from the
8846 output file. This is mostly to handle .rela.bss and
8847 .rela.plt. We must create both sections in
8848 create_dynamic_sections, because they must be created
8849 before the linker maps input sections to output
8850 sections. The linker does that before
8851 adjust_dynamic_symbol is called, and it is that
8852 function which decides whether anything needs to go
8853 into these sections. */
a06ea964
NC		 8854 s->flags |= SEC_EXCLUDE;
8855 continue;
8856 }
8857
8858 if ((s->flags & SEC_HAS_CONTENTS) == 0)
8859 continue;
8860
8861 /* Allocate memory for the section contents. We use bfd_zalloc
07d6d2b8
AM		 8862 here in case unused entries are not reclaimed before the
8863 section's contents are written out. This should not happen,
8864 but this way if it does, we get a R_AARCH64_NONE reloc instead
8865 of garbage. */
a06ea964
NC		 8866 s->contents = (bfd_byte *) bfd_zalloc (dynobj, s->size);
8867 if (s->contents == NULL)
8868 return FALSE;
8869 }
8870
8871 if (htab->root.dynamic_sections_created)
8872 {
8873 /* Add some entries to the .dynamic section. We fill in the
07d6d2b8
AM		 8874 values later, in elfNN_aarch64_finish_dynamic_sections, but we
8875 must add the entries now so that we get the correct size for
8876 the .dynamic section. The DT_DEBUG entry is filled in by the
8877 dynamic linker and used by the debugger. */
a06ea964
NC		 8878#define add_dynamic_entry(TAG, VAL) \
8879 _bfd_elf_add_dynamic_entry (info, TAG, VAL)
8880
0e1862bb 8881 if (bfd_link_executable (info))
a06ea964
NC		 8882 {
8883 if (!add_dynamic_entry (DT_DEBUG, 0))
8884 return FALSE;
8885 }
8886
8887 if (htab->root.splt->size != 0)
8888 {
8889 if (!add_dynamic_entry (DT_PLTGOT, 0)
8890 || !add_dynamic_entry (DT_PLTRELSZ, 0)
8891 || !add_dynamic_entry (DT_PLTREL, DT_RELA)
8892 || !add_dynamic_entry (DT_JMPREL, 0))
8893 return FALSE;
8894
8895 if (htab->tlsdesc_plt
8896 && (!add_dynamic_entry (DT_TLSDESC_PLT, 0)
8897 || !add_dynamic_entry (DT_TLSDESC_GOT, 0)))
8898 return FALSE;
8899 }
8900
8901 if (relocs)
8902 {
8903 if (!add_dynamic_entry (DT_RELA, 0)
8904 || !add_dynamic_entry (DT_RELASZ, 0)
8905 || !add_dynamic_entry (DT_RELAENT, RELOC_SIZE (htab)))
8906 return FALSE;
8907
8908 /* If any dynamic relocs apply to a read-only section,
8909 then we need a DT_TEXTREL entry. */
c2170589 8910 if ((info->flags & DF_TEXTREL) == 0)
63c1f59d 8911 elf_link_hash_traverse (&htab->root, maybe_set_textrel, info);
c2170589 8912
a06ea964
NC		 8913 if ((info->flags & DF_TEXTREL) != 0)
8914 {
8915 if (!add_dynamic_entry (DT_TEXTREL, 0))
8916 return FALSE;
8917 }
8918 }
8919 }
8920#undef add_dynamic_entry
8921
8922 return TRUE;
a06ea964
NC		 8923}
8924
8925static inline void
caed7120
YZ		 8926elf_aarch64_update_plt_entry (bfd *output_bfd,
8927 bfd_reloc_code_real_type r_type,
8928 bfd_byte *plt_entry, bfd_vma value)
a06ea964 8929{
caed7120
YZ		 8930 reloc_howto_type *howto = elfNN_aarch64_howto_from_bfd_reloc (r_type);
8931
1d75a8e2
NC		 8932 /* FIXME: We should check the return value from this function call. */
8933 (void) _bfd_aarch64_elf_put_addend (output_bfd, plt_entry, r_type, howto, value);
a06ea964
NC		 8934}
8935
8936static void
cec5225b
YZ		 8937elfNN_aarch64_create_small_pltn_entry (struct elf_link_hash_entry *h,
8938 struct elf_aarch64_link_hash_table
1419bbe5
WN		 8939 *htab, bfd *output_bfd,
8940 struct bfd_link_info *info)
a06ea964
NC		 8941{
8942 bfd_byte *plt_entry;
8943 bfd_vma plt_index;
8944 bfd_vma got_offset;
8945 bfd_vma gotplt_entry_address;
8946 bfd_vma plt_entry_address;
8947 Elf_Internal_Rela rela;
8948 bfd_byte *loc;
1419bbe5
WN		 8949 asection *plt, *gotplt, *relplt;
8950
8951 /* When building a static executable, use .iplt, .igot.plt and
8952 .rela.iplt sections for STT_GNU_IFUNC symbols. */
8953 if (htab->root.splt != NULL)
8954 {
8955 plt = htab->root.splt;
8956 gotplt = htab->root.sgotplt;
8957 relplt = htab->root.srelplt;
8958 }
8959 else
8960 {
8961 plt = htab->root.iplt;
8962 gotplt = htab->root.igotplt;
8963 relplt = htab->root.irelplt;
8964 }
8965
8966 /* Get the index in the procedure linkage table which
8967 corresponds to this symbol. This is the index of this symbol
8968 in all the symbols for which we are making plt entries. The
8969 first entry in the procedure linkage table is reserved.
a06ea964 8970
1419bbe5
WN		 8971 Get the offset into the .got table of the entry that
8972 corresponds to this function. Each .got entry is GOT_ENTRY_SIZE
8973 bytes. The first three are reserved for the dynamic linker.
692e2b8b 8974
1419bbe5
WN		 8975 For static executables, we don't reserve anything. */
8976
8977 if (plt == htab->root.splt)
8978 {
8979 plt_index = (h->plt.offset - htab->plt_header_size) / htab->plt_entry_size;
8980 got_offset = (plt_index + 3) * GOT_ENTRY_SIZE;
8981 }
8982 else
8983 {
8984 plt_index = h->plt.offset / htab->plt_entry_size;
8985 got_offset = plt_index * GOT_ENTRY_SIZE;
8986 }
8987
8988 plt_entry = plt->contents + h->plt.offset;
8989 plt_entry_address = plt->output_section->vma
f44a1f8e 8990 + plt->output_offset + h->plt.offset;
1419bbe5
WN		 8991 gotplt_entry_address = gotplt->output_section->vma +
8992 gotplt->output_offset + got_offset;
a06ea964
NC		 8993
8994 /* Copy in the boiler-plate for the PLTn entry. */
cec5225b 8995 memcpy (plt_entry, elfNN_aarch64_small_plt_entry, PLT_SMALL_ENTRY_SIZE);
a06ea964
NC		 8996
8997 /* Fill in the top 21 bits for this: ADRP x16, PLT_GOT + n * 8.
8998 ADRP: ((PG(S+A)-PG(P)) >> 12) & 0x1fffff */
caed7120
YZ		 8999 elf_aarch64_update_plt_entry (output_bfd, BFD_RELOC_AARCH64_ADR_HI21_PCREL,
9000 plt_entry,
9001 PG (gotplt_entry_address) -
9002 PG (plt_entry_address));
a06ea964
NC		 9003
9004 /* Fill in the lo12 bits for the load from the pltgot. */
caed7120
YZ		 9005 elf_aarch64_update_plt_entry (output_bfd, BFD_RELOC_AARCH64_LDSTNN_LO12,
9006 plt_entry + 4,
9007 PG_OFFSET (gotplt_entry_address));
a06ea964 9008
9aff4b7a 9009 /* Fill in the lo12 bits for the add from the pltgot entry. */
caed7120
YZ		 9010 elf_aarch64_update_plt_entry (output_bfd, BFD_RELOC_AARCH64_ADD_LO12,
9011 plt_entry + 8,
9012 PG_OFFSET (gotplt_entry_address));
a06ea964
NC		 9013
9014 /* All the GOTPLT Entries are essentially initialized to PLT0. */
cec5225b 9015 bfd_put_NN (output_bfd,
1419bbe5
WN		 9016 plt->output_section->vma + plt->output_offset,
9017 gotplt->contents + got_offset);
a06ea964 9018
a06ea964 9019 rela.r_offset = gotplt_entry_address;
1419bbe5
WN		 9020
9021 if (h->dynindx == -1
0e1862bb 9022 || ((bfd_link_executable (info)
1419bbe5
WN		 9023 || ELF_ST_VISIBILITY (h->other) != STV_DEFAULT)
9024 && h->def_regular
9025 && h->type == STT_GNU_IFUNC))
9026 {
9027 /* If an STT_GNU_IFUNC symbol is locally defined, generate
9028 R_AARCH64_IRELATIVE instead of R_AARCH64_JUMP_SLOT. */
9029 rela.r_info = ELFNN_R_INFO (0, AARCH64_R (IRELATIVE));
9030 rela.r_addend = (h->root.u.def.value
9031 + h->root.u.def.section->output_section->vma
9032 + h->root.u.def.section->output_offset);
9033 }
9034 else
9035 {
9036 /* Fill in the entry in the .rela.plt section. */
9037 rela.r_info = ELFNN_R_INFO (h->dynindx, AARCH64_R (JUMP_SLOT));
9038 rela.r_addend = 0;
9039 }
a06ea964
NC		 9040
9041 /* Compute the relocation entry to used based on PLT index and do
9042 not adjust reloc_count. The reloc_count has already been adjusted
9043 to account for this entry. */
1419bbe5 9044 loc = relplt->contents + plt_index * RELOC_SIZE (htab);
cec5225b 9045 bfd_elfNN_swap_reloca_out (output_bfd, &rela, loc);
a06ea964
NC		 9046}
9047
9048/* Size sections even though they're not dynamic. We use it to setup
9049 _TLS_MODULE_BASE_, if needed. */
9050
9051static bfd_boolean
cec5225b 9052elfNN_aarch64_always_size_sections (bfd *output_bfd,
a06ea964
NC		 9053 struct bfd_link_info *info)
9054{
9055 asection *tls_sec;
9056
0e1862bb 9057 if (bfd_link_relocatable (info))
a06ea964
NC		 9058 return TRUE;
9059
9060 tls_sec = elf_hash_table (info)->tls_sec;
9061
9062 if (tls_sec)
9063 {
9064 struct elf_link_hash_entry *tlsbase;
9065
9066 tlsbase = elf_link_hash_lookup (elf_hash_table (info),
9067 "_TLS_MODULE_BASE_", TRUE, TRUE, FALSE);
9068
9069 if (tlsbase)
9070 {
9071 struct bfd_link_hash_entry *h = NULL;
9072 const struct elf_backend_data *bed =
9073 get_elf_backend_data (output_bfd);
9074
9075 if (!(_bfd_generic_link_add_one_symbol
9076 (info, output_bfd, "_TLS_MODULE_BASE_", BSF_LOCAL,
9077 tls_sec, 0, NULL, FALSE, bed->collect, &h)))
9078 return FALSE;
9079
9080 tlsbase->type = STT_TLS;
9081 tlsbase = (struct elf_link_hash_entry *) h;
9082 tlsbase->def_regular = 1;
9083 tlsbase->other = STV_HIDDEN;
9084 (*bed->elf_backend_hide_symbol) (info, tlsbase, TRUE);
9085 }
9086 }
9087
9088 return TRUE;
9089}
9090
9091/* Finish up dynamic symbol handling. We set the contents of various
9092 dynamic sections here. */
2d0ca824 9093
a06ea964 9094static bfd_boolean
cec5225b 9095elfNN_aarch64_finish_dynamic_symbol (bfd *output_bfd,
a06ea964
NC		 9096 struct bfd_link_info *info,
9097 struct elf_link_hash_entry *h,
9098 Elf_Internal_Sym *sym)
9099{
cec5225b
YZ		 9100 struct elf_aarch64_link_hash_table *htab;
9101 htab = elf_aarch64_hash_table (info);
a06ea964
NC		 9102
9103 if (h->plt.offset != (bfd_vma) - 1)
9104 {
1419bbe5
WN		 9105 asection *plt, *gotplt, *relplt;
9106
a06ea964 9107 /* This symbol has an entry in the procedure linkage table. Set
07d6d2b8 9108 it up. */
a06ea964 9109
1419bbe5
WN		 9110 /* When building a static executable, use .iplt, .igot.plt and
9111 .rela.iplt sections for STT_GNU_IFUNC symbols. */
9112 if (htab->root.splt != NULL)
9113 {
9114 plt = htab->root.splt;
9115 gotplt = htab->root.sgotplt;
9116 relplt = htab->root.srelplt;
9117 }
9118 else
9119 {
9120 plt = htab->root.iplt;
9121 gotplt = htab->root.igotplt;
9122 relplt = htab->root.irelplt;
9123 }
9124
9125 /* This symbol has an entry in the procedure linkage table. Set
9126 it up. */
9127 if ((h->dynindx == -1
0e1862bb 9128 && !((h->forced_local || bfd_link_executable (info))
1419bbe5
WN		 9129 && h->def_regular
9130 && h->type == STT_GNU_IFUNC))
9131 || plt == NULL
9132 || gotplt == NULL
9133 || relplt == NULL)
f955cccf 9134 return FALSE;
a06ea964 9135
1419bbe5 9136 elfNN_aarch64_create_small_pltn_entry (h, htab, output_bfd, info);
a06ea964
NC		 9137 if (!h->def_regular)
9138 {
9139 /* Mark the symbol as undefined, rather than as defined in
46b87d49 9140 the .plt section. */
a06ea964 9141 sym->st_shndx = SHN_UNDEF;
46b87d49
WN		 9142 /* If the symbol is weak we need to clear the value.
9143 Otherwise, the PLT entry would provide a definition for
9144 the symbol even if the symbol wasn't defined anywhere,
9145 and so the symbol would never be NULL. Leave the value if
9146 there were any relocations where pointer equality matters
9147 (this is a clue for the dynamic linker, to make function
9148 pointer comparisons work between an application and shared
9149 library). */
9150 if (!h->ref_regular_nonweak || !h->pointer_equality_needed)
9151 sym->st_value = 0;
a06ea964
NC		 9152 }
9153 }
9154
9155 if (h->got.offset != (bfd_vma) - 1
a377ae2a
SN		 9156 && elf_aarch64_hash_entry (h)->got_type == GOT_NORMAL
9157 /* Undefined weak symbol in static PIE resolves to 0 without
9158 any dynamic relocations. */
9159 && !UNDEFWEAK_NO_DYNAMIC_RELOC (info, h))
a06ea964
NC		 9160 {
9161 Elf_Internal_Rela rela;
9162 bfd_byte *loc;
9163
9164 /* This symbol has an entry in the global offset table. Set it
07d6d2b8 9165 up. */
a06ea964
NC		 9166 if (htab->root.sgot == NULL || htab->root.srelgot == NULL)
9167 abort ();
9168
9169 rela.r_offset = (htab->root.sgot->output_section->vma
9170 + htab->root.sgot->output_offset
9171 + (h->got.offset & ~(bfd_vma) 1));
9172
49206388
WN		 9173 if (h->def_regular
9174 && h->type == STT_GNU_IFUNC)
9175 {
0e1862bb 9176 if (bfd_link_pic (info))
49206388
WN		 9177 {
9178 /* Generate R_AARCH64_GLOB_DAT. */
9179 goto do_glob_dat;
9180 }
9181 else
9182 {
9183 asection *plt;
9184
9185 if (!h->pointer_equality_needed)
9186 abort ();
9187
9188 /* For non-shared object, we can't use .got.plt, which
9189 contains the real function address if we need pointer
9190 equality. We load the GOT entry with the PLT entry. */
9191 plt = htab->root.splt ? htab->root.splt : htab->root.iplt;
9192 bfd_put_NN (output_bfd, (plt->output_section->vma
9193 + plt->output_offset
9194 + h->plt.offset),
9195 htab->root.sgot->contents
9196 + (h->got.offset & ~(bfd_vma) 1));
9197 return TRUE;
9198 }
9199 }
0e1862bb 9200 else if (bfd_link_pic (info) && SYMBOL_REFERENCES_LOCAL (info, h))
a06ea964 9201 {
0ee3a6db 9202 if (!(h->def_regular || ELF_COMMON_DEF_P (h)))
a06ea964
NC		 9203 return FALSE;
9204
9205 BFD_ASSERT ((h->got.offset & 1) != 0);
a6bb11b2 9206 rela.r_info = ELFNN_R_INFO (0, AARCH64_R (RELATIVE));
a06ea964
NC		 9207 rela.r_addend = (h->root.u.def.value
9208 + h->root.u.def.section->output_section->vma
9209 + h->root.u.def.section->output_offset);
9210 }
9211 else
9212 {
49206388 9213do_glob_dat:
a06ea964 9214 BFD_ASSERT ((h->got.offset & 1) == 0);
cec5225b 9215 bfd_put_NN (output_bfd, (bfd_vma) 0,
a06ea964 9216 htab->root.sgot->contents + h->got.offset);
a6bb11b2 9217 rela.r_info = ELFNN_R_INFO (h->dynindx, AARCH64_R (GLOB_DAT));
a06ea964
NC		 9218 rela.r_addend = 0;
9219 }
9220
9221 loc = htab->root.srelgot->contents;
9222 loc += htab->root.srelgot->reloc_count++ * RELOC_SIZE (htab);
cec5225b 9223 bfd_elfNN_swap_reloca_out (output_bfd, &rela, loc);
a06ea964
NC		 9224 }
9225
9226 if (h->needs_copy)
9227 {
9228 Elf_Internal_Rela rela;
5474d94f 9229 asection *s;
a06ea964
NC		 9230 bfd_byte *loc;
9231
9232 /* This symbol needs a copy reloc. Set it up. */
a06ea964
NC		 9233 if (h->dynindx == -1
9234 || (h->root.type != bfd_link_hash_defined
9235 && h->root.type != bfd_link_hash_defweak)
9d19e4fd 9236 || htab->root.srelbss == NULL)
a06ea964
NC		 9237 abort ();
9238
9239 rela.r_offset = (h->root.u.def.value
9240 + h->root.u.def.section->output_section->vma
9241 + h->root.u.def.section->output_offset);
a6bb11b2 9242 rela.r_info = ELFNN_R_INFO (h->dynindx, AARCH64_R (COPY));
a06ea964 9243 rela.r_addend = 0;
afbf7e8e 9244 if (h->root.u.def.section == htab->root.sdynrelro)
5474d94f
AM		 9245 s = htab->root.sreldynrelro;
9246 else
9247 s = htab->root.srelbss;
9248 loc = s->contents + s->reloc_count++ * RELOC_SIZE (htab);
cec5225b 9249 bfd_elfNN_swap_reloca_out (output_bfd, &rela, loc);
a06ea964
NC		 9250 }
9251
9252 /* Mark _DYNAMIC and _GLOBAL_OFFSET_TABLE_ as absolute. SYM may
9253 be NULL for local symbols. */
9254 if (sym != NULL
9637f6ef 9255 && (h == elf_hash_table (info)->hdynamic
a06ea964
NC		 9256 || h == elf_hash_table (info)->hgot))
9257 sym->st_shndx = SHN_ABS;
9258
9259 return TRUE;
9260}
9261
1419bbe5
WN		 9262/* Finish up local dynamic symbol handling. We set the contents of
9263 various dynamic sections here. */
9264
9265static bfd_boolean
9266elfNN_aarch64_finish_local_dynamic_symbol (void **slot, void *inf)
9267{
9268 struct elf_link_hash_entry *h
9269 = (struct elf_link_hash_entry *) *slot;
9270 struct bfd_link_info *info
9271 = (struct bfd_link_info *) inf;
9272
9273 return elfNN_aarch64_finish_dynamic_symbol (info->output_bfd,
9274 info, h, NULL);
9275}
9276
a06ea964 9277static void
cec5225b
YZ		 9278elfNN_aarch64_init_small_plt0_entry (bfd *output_bfd ATTRIBUTE_UNUSED,
9279 struct elf_aarch64_link_hash_table
a06ea964
NC		 9280 *htab)
9281{
9282 /* Fill in PLT0. Fixme:RR Note this doesn't distinguish between
9283 small and large plts and at the minute just generates
9284 the small PLT. */
9285
cec5225b 9286 /* PLT0 of the small PLT looks like this in ELF64 -
a06ea964
NC		 9287 stp x16, x30, [sp, #-16]! // Save the reloc and lr on stack.
9288 adrp x16, PLT_GOT + 16 // Get the page base of the GOTPLT
9289 ldr x17, [x16, #:lo12:PLT_GOT+16] // Load the address of the
9290 // symbol resolver
9291 add x16, x16, #:lo12:PLT_GOT+16 // Load the lo12 bits of the
9292 // GOTPLT entry for this.
9293 br x17
cec5225b 9294 PLT0 will be slightly different in ELF32 due to different got entry
2d0ca824 9295 size. */
caed7120 9296 bfd_vma plt_got_2nd_ent; /* Address of GOT[2]. */
a06ea964
NC		 9297 bfd_vma plt_base;
9298
9299
cec5225b 9300 memcpy (htab->root.splt->contents, elfNN_aarch64_small_plt0_entry,
a06ea964
NC		 9301 PLT_ENTRY_SIZE);
9302 elf_section_data (htab->root.splt->output_section)->this_hdr.sh_entsize =
9303 PLT_ENTRY_SIZE;
9304
caed7120
YZ		 9305 plt_got_2nd_ent = (htab->root.sgotplt->output_section->vma
9306 + htab->root.sgotplt->output_offset
9307 + GOT_ENTRY_SIZE * 2);
a06ea964
NC		 9308
9309 plt_base = htab->root.splt->output_section->vma +
f44a1f8e 9310 htab->root.splt->output_offset;
a06ea964
NC		 9311
9312 /* Fill in the top 21 bits for this: ADRP x16, PLT_GOT + n * 8.
9313 ADRP: ((PG(S+A)-PG(P)) >> 12) & 0x1fffff */
caed7120
YZ		 9314 elf_aarch64_update_plt_entry (output_bfd, BFD_RELOC_AARCH64_ADR_HI21_PCREL,
9315 htab->root.splt->contents + 4,
9316 PG (plt_got_2nd_ent) - PG (plt_base + 4));
a06ea964 9317
caed7120
YZ		 9318 elf_aarch64_update_plt_entry (output_bfd, BFD_RELOC_AARCH64_LDSTNN_LO12,
9319 htab->root.splt->contents + 8,
9320 PG_OFFSET (plt_got_2nd_ent));
a06ea964 9321
caed7120
YZ		 9322 elf_aarch64_update_plt_entry (output_bfd, BFD_RELOC_AARCH64_ADD_LO12,
9323 htab->root.splt->contents + 12,
9324 PG_OFFSET (plt_got_2nd_ent));
a06ea964
NC		 9325}
9326
9327static bfd_boolean
cec5225b 9328elfNN_aarch64_finish_dynamic_sections (bfd *output_bfd,
a06ea964
NC		 9329 struct bfd_link_info *info)
9330{
cec5225b 9331 struct elf_aarch64_link_hash_table *htab;
a06ea964
NC		 9332 bfd *dynobj;
9333 asection *sdyn;
9334
cec5225b 9335 htab = elf_aarch64_hash_table (info);
a06ea964
NC		 9336 dynobj = htab->root.dynobj;
9337 sdyn = bfd_get_linker_section (dynobj, ".dynamic");
9338
9339 if (htab->root.dynamic_sections_created)
9340 {
cec5225b 9341 ElfNN_External_Dyn *dyncon, *dynconend;
a06ea964
NC		 9342
9343 if (sdyn == NULL || htab->root.sgot == NULL)
9344 abort ();
9345
cec5225b
YZ		 9346 dyncon = (ElfNN_External_Dyn *) sdyn->contents;
9347 dynconend = (ElfNN_External_Dyn *) (sdyn->contents + sdyn->size);
a06ea964
NC		 9348 for (; dyncon < dynconend; dyncon++)
9349 {
9350 Elf_Internal_Dyn dyn;
9351 asection *s;
9352
cec5225b 9353 bfd_elfNN_swap_dyn_in (dynobj, dyncon, &dyn);
a06ea964
NC		 9354
9355 switch (dyn.d_tag)
9356 {
9357 default:
9358 continue;
9359
9360 case DT_PLTGOT:
9361 s = htab->root.sgotplt;
9362 dyn.d_un.d_ptr = s->output_section->vma + s->output_offset;
9363 break;
9364
9365 case DT_JMPREL:
4ade44b7
AM		 9366 s = htab->root.srelplt;
9367 dyn.d_un.d_ptr = s->output_section->vma + s->output_offset;
a06ea964
NC		 9368 break;
9369
9370 case DT_PLTRELSZ:
c955de36 9371 s = htab->root.srelplt;
a06ea964
NC		 9372 dyn.d_un.d_val = s->size;
9373 break;
9374
a06ea964
NC		 9375 case DT_TLSDESC_PLT:
9376 s = htab->root.splt;
9377 dyn.d_un.d_ptr = s->output_section->vma + s->output_offset
9378 + htab->tlsdesc_plt;
9379 break;
9380
9381 case DT_TLSDESC_GOT:
9382 s = htab->root.sgot;
9383 dyn.d_un.d_ptr = s->output_section->vma + s->output_offset
9384 + htab->dt_tlsdesc_got;
9385 break;
9386 }
9387
cec5225b 9388 bfd_elfNN_swap_dyn_out (output_bfd, &dyn, dyncon);
a06ea964
NC		 9389 }
9390
9391 }
9392
9393 /* Fill in the special first entry in the procedure linkage table. */
9394 if (htab->root.splt && htab->root.splt->size > 0)
9395 {
cec5225b 9396 elfNN_aarch64_init_small_plt0_entry (output_bfd, htab);
a06ea964
NC		 9397
9398 elf_section_data (htab->root.splt->output_section)->
9399 this_hdr.sh_entsize = htab->plt_entry_size;
9400
9401
9402 if (htab->tlsdesc_plt)
9403 {
cec5225b 9404 bfd_put_NN (output_bfd, (bfd_vma) 0,
a06ea964
NC		 9405 htab->root.sgot->contents + htab->dt_tlsdesc_got);
9406
9407 memcpy (htab->root.splt->contents + htab->tlsdesc_plt,
cec5225b
YZ		 9408 elfNN_aarch64_tlsdesc_small_plt_entry,
9409 sizeof (elfNN_aarch64_tlsdesc_small_plt_entry));
a06ea964
NC		 9410
9411 {
9412 bfd_vma adrp1_addr =
9413 htab->root.splt->output_section->vma
9414 + htab->root.splt->output_offset + htab->tlsdesc_plt + 4;
9415
caed7120 9416 bfd_vma adrp2_addr = adrp1_addr + 4;
a06ea964
NC		 9417
9418 bfd_vma got_addr =
9419 htab->root.sgot->output_section->vma
9420 + htab->root.sgot->output_offset;
9421
9422 bfd_vma pltgot_addr =
9423 htab->root.sgotplt->output_section->vma
9424 + htab->root.sgotplt->output_offset;
9425
9426 bfd_vma dt_tlsdesc_got = got_addr + htab->dt_tlsdesc_got;
caed7120
YZ		 9427
9428 bfd_byte *plt_entry =
9429 htab->root.splt->contents + htab->tlsdesc_plt;
a06ea964
NC		 9430
9431 /* adrp x2, DT_TLSDESC_GOT */
caed7120
YZ		 9432 elf_aarch64_update_plt_entry (output_bfd,
9433 BFD_RELOC_AARCH64_ADR_HI21_PCREL,
9434 plt_entry + 4,
9435 (PG (dt_tlsdesc_got)
9436 - PG (adrp1_addr)));
a06ea964
NC		 9437
9438 /* adrp x3, 0 */
caed7120
YZ		 9439 elf_aarch64_update_plt_entry (output_bfd,
9440 BFD_RELOC_AARCH64_ADR_HI21_PCREL,
9441 plt_entry + 8,
9442 (PG (pltgot_addr)
9443 - PG (adrp2_addr)));
a06ea964
NC		 9444
9445 /* ldr x2, [x2, #0] */
caed7120
YZ		 9446 elf_aarch64_update_plt_entry (output_bfd,
9447 BFD_RELOC_AARCH64_LDSTNN_LO12,
9448 plt_entry + 12,
9449 PG_OFFSET (dt_tlsdesc_got));
a06ea964
NC		 9450
9451 /* add x3, x3, 0 */
caed7120
YZ		 9452 elf_aarch64_update_plt_entry (output_bfd,
9453 BFD_RELOC_AARCH64_ADD_LO12,
9454 plt_entry + 16,
9455 PG_OFFSET (pltgot_addr));
a06ea964
NC		 9456 }
9457 }
9458 }
9459
9460 if (htab->root.sgotplt)
9461 {
9462 if (bfd_is_abs_section (htab->root.sgotplt->output_section))
9463 {
4eca0228 9464 _bfd_error_handler
871b3ab2 9465 (_("discarded output section: `%pA'"), htab->root.sgotplt);
a06ea964
NC		 9466 return FALSE;
9467 }
9468
9469 /* Fill in the first three entries in the global offset table. */
9470 if (htab->root.sgotplt->size > 0)
9471 {
8db339a6
MS		 9472 bfd_put_NN (output_bfd, (bfd_vma) 0, htab->root.sgotplt->contents);
9473
a06ea964 9474 /* Write GOT[1] and GOT[2], needed for the dynamic linker. */
cec5225b 9475 bfd_put_NN (output_bfd,
a06ea964
NC		 9476 (bfd_vma) 0,
9477 htab->root.sgotplt->contents + GOT_ENTRY_SIZE);
cec5225b 9478 bfd_put_NN (output_bfd,
a06ea964
NC		 9479 (bfd_vma) 0,
9480 htab->root.sgotplt->contents + GOT_ENTRY_SIZE * 2);
9481 }
9482
8db339a6
MS		 9483 if (htab->root.sgot)
9484 {
9485 if (htab->root.sgot->size > 0)
9486 {
9487 bfd_vma addr =
9488 sdyn ? sdyn->output_section->vma + sdyn->output_offset : 0;
9489 bfd_put_NN (output_bfd, addr, htab->root.sgot->contents);
9490 }
9491 }
9492
a06ea964
NC		 9493 elf_section_data (htab->root.sgotplt->output_section)->
9494 this_hdr.sh_entsize = GOT_ENTRY_SIZE;
9495 }
9496
9497 if (htab->root.sgot && htab->root.sgot->size > 0)
9498 elf_section_data (htab->root.sgot->output_section)->this_hdr.sh_entsize
9499 = GOT_ENTRY_SIZE;
9500
1419bbe5
WN		 9501 /* Fill PLT and GOT entries for local STT_GNU_IFUNC symbols. */
9502 htab_traverse (htab->loc_hash_table,
9503 elfNN_aarch64_finish_local_dynamic_symbol,
9504 info);
9505
a06ea964
NC		 9506 return TRUE;
9507}
9508
9509/* Return address for Ith PLT stub in section PLT, for relocation REL
9510 or (bfd_vma) -1 if it should not be included. */
9511
9512static bfd_vma
cec5225b 9513elfNN_aarch64_plt_sym_val (bfd_vma i, const asection *plt,
a06ea964
NC		 9514 const arelent *rel ATTRIBUTE_UNUSED)
9515{
9516 return plt->vma + PLT_ENTRY_SIZE + i * PLT_SMALL_ENTRY_SIZE;
9517}
9518
d691934d
NC		 9519/* Returns TRUE if NAME is an AArch64 mapping symbol.
9520 The ARM ELF standard defines $x (for A64 code) and $d (for data).
9521 It also allows a period initiated suffix to be added to the symbol, ie:
9522 "$[adtx]\.[:sym_char]+". */
9523
9524static bfd_boolean
9525is_aarch64_mapping_symbol (const char * name)
9526{
9527 return name != NULL /* Paranoia. */
9528 && name[0] == '$' /* Note: if objcopy --prefix-symbols has been used then
9529 the mapping symbols could have acquired a prefix.
9530 We do not support this here, since such symbols no
9531 longer conform to the ARM ELF ABI. */
9532 && (name[1] == 'd' || name[1] == 'x')
9533 && (name[2] == 0 || name[2] == '.');
9534 /* FIXME: Strictly speaking the symbol is only a valid mapping symbol if
9535 any characters that follow the period are legal characters for the body
9536 of a symbol's name. For now we just assume that this is the case. */
9537}
9538
9539/* Make sure that mapping symbols in object files are not removed via the
9540 "strip --strip-unneeded" tool. These symbols might needed in order to
9541 correctly generate linked files. Once an object file has been linked,
9542 it should be safe to remove them. */
9543
9544static void
9545elfNN_aarch64_backend_symbol_processing (bfd *abfd, asymbol *sym)
9546{
9547 if (((abfd->flags & (EXEC_P | DYNAMIC)) == 0)
9548 && sym->section != bfd_abs_section_ptr
9549 && is_aarch64_mapping_symbol (sym->name))
9550 sym->flags |= BSF_KEEP;
9551}
9552
a06ea964
NC		 9553
9554/* We use this so we can override certain functions
9555 (though currently we don't). */
9556
cec5225b 9557const struct elf_size_info elfNN_aarch64_size_info =
a06ea964 9558{
cec5225b
YZ		 9559 sizeof (ElfNN_External_Ehdr),
9560 sizeof (ElfNN_External_Phdr),
9561 sizeof (ElfNN_External_Shdr),
9562 sizeof (ElfNN_External_Rel),
9563 sizeof (ElfNN_External_Rela),
9564 sizeof (ElfNN_External_Sym),
9565 sizeof (ElfNN_External_Dyn),
a06ea964
NC		 9566 sizeof (Elf_External_Note),
9567 4, /* Hash table entry size. */
9568 1, /* Internal relocs per external relocs. */
cec5225b
YZ		 9569 ARCH_SIZE, /* Arch size. */
9570 LOG_FILE_ALIGN, /* Log_file_align. */
9571 ELFCLASSNN, EV_CURRENT,
9572 bfd_elfNN_write_out_phdrs,
9573 bfd_elfNN_write_shdrs_and_ehdr,
9574 bfd_elfNN_checksum_contents,
9575 bfd_elfNN_write_relocs,
9576 bfd_elfNN_swap_symbol_in,
9577 bfd_elfNN_swap_symbol_out,
9578 bfd_elfNN_slurp_reloc_table,
9579 bfd_elfNN_slurp_symbol_table,
9580 bfd_elfNN_swap_dyn_in,
9581 bfd_elfNN_swap_dyn_out,
9582 bfd_elfNN_swap_reloc_in,
9583 bfd_elfNN_swap_reloc_out,
9584 bfd_elfNN_swap_reloca_in,
9585 bfd_elfNN_swap_reloca_out
a06ea964
NC		 9586};
9587
9588#define ELF_ARCH bfd_arch_aarch64
9589#define ELF_MACHINE_CODE EM_AARCH64
9590#define ELF_MAXPAGESIZE 0x10000
9591#define ELF_MINPAGESIZE 0x1000
9592#define ELF_COMMONPAGESIZE 0x1000
9593
07d6d2b8 9594#define bfd_elfNN_close_and_cleanup \
cec5225b 9595 elfNN_aarch64_close_and_cleanup
a06ea964 9596
07d6d2b8 9597#define bfd_elfNN_bfd_free_cached_info \
cec5225b 9598 elfNN_aarch64_bfd_free_cached_info
a06ea964 9599
cec5225b
YZ		 9600#define bfd_elfNN_bfd_is_target_special_symbol \
9601 elfNN_aarch64_is_target_special_symbol
a06ea964 9602
07d6d2b8 9603#define bfd_elfNN_bfd_link_hash_table_create \
cec5225b 9604 elfNN_aarch64_link_hash_table_create
a06ea964 9605
cec5225b
YZ		 9606#define bfd_elfNN_bfd_merge_private_bfd_data \
9607 elfNN_aarch64_merge_private_bfd_data
a06ea964 9608
cec5225b
YZ		 9609#define bfd_elfNN_bfd_print_private_bfd_data \
9610 elfNN_aarch64_print_private_bfd_data
a06ea964 9611
cec5225b
YZ		 9612#define bfd_elfNN_bfd_reloc_type_lookup \
9613 elfNN_aarch64_reloc_type_lookup
a06ea964 9614
cec5225b
YZ		 9615#define bfd_elfNN_bfd_reloc_name_lookup \
9616 elfNN_aarch64_reloc_name_lookup
a06ea964 9617
cec5225b
YZ		 9618#define bfd_elfNN_bfd_set_private_flags \
9619 elfNN_aarch64_set_private_flags
a06ea964 9620
cec5225b
YZ		 9621#define bfd_elfNN_find_inliner_info \
9622 elfNN_aarch64_find_inliner_info
a06ea964 9623
cec5225b
YZ		 9624#define bfd_elfNN_find_nearest_line \
9625 elfNN_aarch64_find_nearest_line
a06ea964 9626
cec5225b
YZ		 9627#define bfd_elfNN_mkobject \
9628 elfNN_aarch64_mkobject
a06ea964 9629
cec5225b
YZ		 9630#define bfd_elfNN_new_section_hook \
9631 elfNN_aarch64_new_section_hook
a06ea964
NC		 9632
9633#define elf_backend_adjust_dynamic_symbol \
cec5225b 9634 elfNN_aarch64_adjust_dynamic_symbol
a06ea964
NC		 9635
9636#define elf_backend_always_size_sections \
cec5225b 9637 elfNN_aarch64_always_size_sections
a06ea964
NC		 9638
9639#define elf_backend_check_relocs \
cec5225b 9640 elfNN_aarch64_check_relocs
a06ea964
NC		 9641
9642#define elf_backend_copy_indirect_symbol \
cec5225b 9643 elfNN_aarch64_copy_indirect_symbol
a06ea964
NC		 9644
9645/* Create .dynbss, and .rela.bss sections in DYNOBJ, and set up shortcuts
9646 to them in our hash. */
9647#define elf_backend_create_dynamic_sections \
cec5225b 9648 elfNN_aarch64_create_dynamic_sections
a06ea964
NC		 9649
9650#define elf_backend_init_index_section \
9651 _bfd_elf_init_2_index_sections
9652
a06ea964 9653#define elf_backend_finish_dynamic_sections \
cec5225b 9654 elfNN_aarch64_finish_dynamic_sections
a06ea964
NC		 9655
9656#define elf_backend_finish_dynamic_symbol \
cec5225b 9657 elfNN_aarch64_finish_dynamic_symbol
a06ea964 9658
a06ea964 9659#define elf_backend_object_p \
cec5225b 9660 elfNN_aarch64_object_p
a06ea964 9661
07d6d2b8 9662#define elf_backend_output_arch_local_syms \
cec5225b 9663 elfNN_aarch64_output_arch_local_syms
a06ea964
NC		 9664
9665#define elf_backend_plt_sym_val \
cec5225b 9666 elfNN_aarch64_plt_sym_val
a06ea964
NC		 9667
9668#define elf_backend_post_process_headers \
cec5225b 9669 elfNN_aarch64_post_process_headers
a06ea964
NC		 9670
9671#define elf_backend_relocate_section \
cec5225b 9672 elfNN_aarch64_relocate_section
a06ea964
NC		 9673
9674#define elf_backend_reloc_type_class \
cec5225b 9675 elfNN_aarch64_reloc_type_class
a06ea964 9676
a06ea964 9677#define elf_backend_section_from_shdr \
cec5225b 9678 elfNN_aarch64_section_from_shdr
a06ea964
NC		 9679
9680#define elf_backend_size_dynamic_sections \
cec5225b 9681 elfNN_aarch64_size_dynamic_sections
a06ea964
NC		 9682
9683#define elf_backend_size_info \
cec5225b 9684 elfNN_aarch64_size_info
a06ea964 9685
68fcca92
JW		 9686#define elf_backend_write_section \
9687 elfNN_aarch64_write_section
9688
d691934d
NC		 9689#define elf_backend_symbol_processing \
9690 elfNN_aarch64_backend_symbol_processing
9691
a06ea964 9692#define elf_backend_can_refcount 1
59c108f7 9693#define elf_backend_can_gc_sections 1
a06ea964
NC		 9694#define elf_backend_plt_readonly 1
9695#define elf_backend_want_got_plt 1
9696#define elf_backend_want_plt_sym 0
5474d94f 9697#define elf_backend_want_dynrelro 1
a06ea964
NC		 9698#define elf_backend_may_use_rel_p 0
9699#define elf_backend_may_use_rela_p 1
9700#define elf_backend_default_use_rela_p 1
07d6d2b8 9701#define elf_backend_rela_normal 1
64f52338 9702#define elf_backend_dtrel_excludes_plt 1
a06ea964 9703#define elf_backend_got_header_size (GOT_ENTRY_SIZE * 3)
c495064d 9704#define elf_backend_default_execstack 0
32f573bc 9705#define elf_backend_extern_protected_data 1
7f784814 9706#define elf_backend_hash_symbol elf_aarch64_hash_symbol
a06ea964 9707
07d6d2b8 9708#undef elf_backend_obj_attrs_section
a06ea964
NC		 9709#define elf_backend_obj_attrs_section ".ARM.attributes"
9710
cec5225b 9711#include "elfNN-target.h"
a75cf613
ES		 9712
9713/* CloudABI support. */
9714
9715#undef TARGET_LITTLE_SYM
9716#define TARGET_LITTLE_SYM aarch64_elfNN_le_cloudabi_vec
9717#undef TARGET_LITTLE_NAME
9718#define TARGET_LITTLE_NAME "elfNN-littleaarch64-cloudabi"
9719#undef TARGET_BIG_SYM
9720#define TARGET_BIG_SYM aarch64_elfNN_be_cloudabi_vec
9721#undef TARGET_BIG_NAME
9722#define TARGET_BIG_NAME "elfNN-bigaarch64-cloudabi"
9723
9724#undef ELF_OSABI
9725#define ELF_OSABI ELFOSABI_CLOUDABI
9726
9727#undef elfNN_bed
9728#define elfNN_bed elfNN_aarch64_cloudabi_bed
9729
9730#include "elfNN-target.h"
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