1 /* AArch64-specific support for NN-bit ELF.
2 Copyright (C) 2009-2020 Free Software Foundation, Inc.
3 Contributed by ARM Ltd.
5 This file is part of BFD, the Binary File Descriptor library.
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.
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.
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/>. */
21 /* Notes on implementation:
23 Thread Local Store (TLS)
27 The implementation currently supports both traditional TLS and TLS
28 descriptors, but only general dynamic (GD).
30 For traditional TLS the assembler will present us with code
31 fragments of the form:
34 R_AARCH64_TLSGD_ADR_PAGE21(foo)
35 add x0, :tlsgd_lo12:foo
36 R_AARCH64_TLSGD_ADD_LO12_NC(foo)
40 For TLS descriptors the assembler will present us with code
41 fragments of the form:
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)
47 blr x1 R_AARCH64_TLSDESC_CALL(foo)
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.
53 The relocations R_AARCH64_TLSDESC_{ADR_PAGE21,LD64_LO12_NC,ADD_LO12_NC}
54 against foo indicate that 'foo' is thread local and should be accessed
55 via a TLS descriptor mechanism.
57 The precise instruction sequence is only relevant from the
58 perspective of linker relaxation which is currently not implemented.
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.
65 In the traditional TLS mechanism, the double GOT entry is used to
66 provide the tls_index structure, containing module and offset
67 entries. The static linker places the relocation R_AARCH64_TLS_DTPMOD
68 on the module entry. The loader will subsequently fixup this
69 relocation with the module identity.
71 For global traditional TLS symbols the static linker places an
72 R_AARCH64_TLS_DTPREL relocation on the offset entry. The loader
73 will subsequently fixup the offset. For local TLS symbols the static
74 linker fixes up offset.
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.
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.
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.
95 elfNN_aarch64_check_relocs()
97 This function is invoked for each relocation.
99 The TLS relocations R_AARCH64_TLSGD_{ADR_PREL21,ADD_LO12_NC} and
100 R_AARCH64_TLSDESC_{ADR_PAGE21,LD64_LO12_NC,ADD_LO12_NC} are
101 spotted. One time creation of local symbol data structures are
102 created when the first local symbol is seen.
104 The reference count for a symbol is incremented. The GOT type for
105 each symbol is marked as general dynamic.
107 elfNN_aarch64_allocate_dynrelocs ()
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
115 elfNN_aarch64_size_dynamic_sections ()
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.
122 elfNN_aarch64_relocate_section ()
124 Calls elfNN_aarch64_final_link_relocate ()
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.
134 elfNN_aarch64_final_link_relocate ()
136 Fixup the R_AARCH64_TLSGD_{ADR_PREL21, ADD_LO12_NC} relocations. */
140 #include "libiberty.h"
144 #include "objalloc.h"
145 #include "elf/aarch64.h"
146 #include "elfxx-aarch64.h"
147 #include "cpu-aarch64.h"
152 #define AARCH64_R(NAME) R_AARCH64_ ## NAME
153 #define AARCH64_R_STR(NAME) "R_AARCH64_" #NAME
154 #define HOWTO64(...) HOWTO (__VA_ARGS__)
155 #define HOWTO32(...) EMPTY_HOWTO (0)
156 #define LOG_FILE_ALIGN 3
157 #define BFD_RELOC_AARCH64_TLSDESC_LD64_LO12_NC BFD_RELOC_AARCH64_TLSDESC_LD64_LO12
161 #define AARCH64_R(NAME) R_AARCH64_P32_ ## NAME
162 #define AARCH64_R_STR(NAME) "R_AARCH64_P32_" #NAME
163 #define HOWTO64(...) EMPTY_HOWTO (0)
164 #define HOWTO32(...) HOWTO (__VA_ARGS__)
165 #define LOG_FILE_ALIGN 2
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
170 #define IS_AARCH64_TLS_RELOC(R_TYPE) \
171 ((R_TYPE) == BFD_RELOC_AARCH64_TLSGD_ADD_LO12_NC \
172 || (R_TYPE) == BFD_RELOC_AARCH64_TLSGD_ADR_PAGE21 \
173 || (R_TYPE) == BFD_RELOC_AARCH64_TLSGD_ADR_PREL21 \
174 || (R_TYPE) == BFD_RELOC_AARCH64_TLSGD_MOVW_G0_NC \
175 || (R_TYPE) == BFD_RELOC_AARCH64_TLSGD_MOVW_G1 \
176 || (R_TYPE) == BFD_RELOC_AARCH64_TLSIE_ADR_GOTTPREL_PAGE21 \
177 || (R_TYPE) == BFD_RELOC_AARCH64_TLSIE_LD32_GOTTPREL_LO12_NC \
178 || (R_TYPE) == BFD_RELOC_AARCH64_TLSIE_LD64_GOTTPREL_LO12_NC \
179 || (R_TYPE) == BFD_RELOC_AARCH64_TLSIE_LD_GOTTPREL_PREL19 \
180 || (R_TYPE) == BFD_RELOC_AARCH64_TLSIE_MOVW_GOTTPREL_G0_NC \
181 || (R_TYPE) == BFD_RELOC_AARCH64_TLSIE_MOVW_GOTTPREL_G1 \
182 || (R_TYPE) == BFD_RELOC_AARCH64_TLSLD_ADD_DTPREL_HI12 \
183 || (R_TYPE) == BFD_RELOC_AARCH64_TLSLD_ADD_DTPREL_LO12 \
184 || (R_TYPE) == BFD_RELOC_AARCH64_TLSLD_ADD_DTPREL_LO12_NC \
185 || (R_TYPE) == BFD_RELOC_AARCH64_TLSLD_ADD_LO12_NC \
186 || (R_TYPE) == BFD_RELOC_AARCH64_TLSLD_ADR_PAGE21 \
187 || (R_TYPE) == BFD_RELOC_AARCH64_TLSLD_ADR_PREL21 \
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 \
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 \
201 || (R_TYPE) == BFD_RELOC_AARCH64_TLSLE_ADD_TPREL_HI12 \
202 || (R_TYPE) == BFD_RELOC_AARCH64_TLSLE_ADD_TPREL_LO12 \
203 || (R_TYPE) == BFD_RELOC_AARCH64_TLSLE_ADD_TPREL_LO12_NC \
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 \
212 || (R_TYPE) == BFD_RELOC_AARCH64_TLSLE_MOVW_TPREL_G0 \
213 || (R_TYPE) == BFD_RELOC_AARCH64_TLSLE_MOVW_TPREL_G0_NC \
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 \
217 || (R_TYPE) == BFD_RELOC_AARCH64_TLS_DTPMOD \
218 || (R_TYPE) == BFD_RELOC_AARCH64_TLS_DTPREL \
219 || (R_TYPE) == BFD_RELOC_AARCH64_TLS_TPREL \
220 || IS_AARCH64_TLSDESC_RELOC ((R_TYPE)))
222 #define IS_AARCH64_TLS_RELAX_RELOC(R_TYPE) \
223 ((R_TYPE) == BFD_RELOC_AARCH64_TLSDESC_ADD \
224 || (R_TYPE) == BFD_RELOC_AARCH64_TLSDESC_ADD_LO12 \
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 \
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 \
234 || (R_TYPE) == BFD_RELOC_AARCH64_TLSGD_ADR_PAGE21 \
235 || (R_TYPE) == BFD_RELOC_AARCH64_TLSGD_ADR_PREL21 \
236 || (R_TYPE) == BFD_RELOC_AARCH64_TLSGD_ADD_LO12_NC \
237 || (R_TYPE) == BFD_RELOC_AARCH64_TLSGD_MOVW_G0_NC \
238 || (R_TYPE) == BFD_RELOC_AARCH64_TLSGD_MOVW_G1 \
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 \
242 || (R_TYPE) == BFD_RELOC_AARCH64_TLSLD_ADD_LO12_NC \
243 || (R_TYPE) == BFD_RELOC_AARCH64_TLSLD_ADR_PAGE21 \
244 || (R_TYPE) == BFD_RELOC_AARCH64_TLSLD_ADR_PREL21)
246 #define IS_AARCH64_TLSDESC_RELOC(R_TYPE) \
247 ((R_TYPE) == BFD_RELOC_AARCH64_TLSDESC \
248 || (R_TYPE) == BFD_RELOC_AARCH64_TLSDESC_ADD \
249 || (R_TYPE) == BFD_RELOC_AARCH64_TLSDESC_ADD_LO12 \
250 || (R_TYPE) == BFD_RELOC_AARCH64_TLSDESC_ADR_PAGE21 \
251 || (R_TYPE) == BFD_RELOC_AARCH64_TLSDESC_ADR_PREL21 \
252 || (R_TYPE) == BFD_RELOC_AARCH64_TLSDESC_CALL \
253 || (R_TYPE) == BFD_RELOC_AARCH64_TLSDESC_LD32_LO12_NC \
254 || (R_TYPE) == BFD_RELOC_AARCH64_TLSDESC_LD64_LO12 \
255 || (R_TYPE) == BFD_RELOC_AARCH64_TLSDESC_LDR \
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)
260 #define ELIMINATE_COPY_RELOCS 1
262 /* Return size of a relocation entry. HTAB is the bfd's
263 elf_aarch64_link_hash_entry. */
264 #define RELOC_SIZE(HTAB) (sizeof (ElfNN_External_Rela))
266 /* GOT Entry size - 8 bytes in ELF64 and 4 bytes in ELF32. */
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)
271 /* PLT sizes with BTI insn. */
272 #define PLT_BTI_SMALL_ENTRY_SIZE (24)
273 /* PLT sizes with PAC insn. */
274 #define PLT_PAC_SMALL_ENTRY_SIZE (24)
275 /* PLT sizes with BTI and PAC insn. */
276 #define PLT_BTI_PAC_SMALL_ENTRY_SIZE (24)
278 /* Encoding of the nop instruction. */
279 #define INSN_NOP 0xd503201f
281 #define aarch64_compute_jump_table_size(htab) \
282 (((htab)->root.srelplt == NULL) ? 0 \
283 : (htab)->root.srelplt->reloc_count * GOT_ENTRY_SIZE)
285 /* The first entry in a procedure linkage table looks like this
286 if the distance between the PLTGOT and the PLT is < 4GB use
287 these PLT entries. Note that the dynamic linker gets &PLTGOT[2]
288 in x16 and needs to work out PLTGOT[1] by using an address of
289 [x16,#-GOT_ENTRY_SIZE]. */
290 static const bfd_byte elfNN_aarch64_small_plt0_entry
[PLT_ENTRY_SIZE
] =
292 0xf0, 0x7b, 0xbf, 0xa9, /* stp x16, x30, [sp, #-16]! */
293 0x10, 0x00, 0x00, 0x90, /* adrp x16, (GOT+16) */
295 0x11, 0x0A, 0x40, 0xf9, /* ldr x17, [x16, #PLT_GOT+0x10] */
296 0x10, 0x42, 0x00, 0x91, /* add x16, x16,#PLT_GOT+0x10 */
298 0x11, 0x0A, 0x40, 0xb9, /* ldr w17, [x16, #PLT_GOT+0x8] */
299 0x10, 0x22, 0x00, 0x11, /* add w16, w16,#PLT_GOT+0x8 */
301 0x20, 0x02, 0x1f, 0xd6, /* br x17 */
302 0x1f, 0x20, 0x03, 0xd5, /* nop */
303 0x1f, 0x20, 0x03, 0xd5, /* nop */
304 0x1f, 0x20, 0x03, 0xd5, /* nop */
307 static const bfd_byte elfNN_aarch64_small_plt0_bti_entry
[PLT_ENTRY_SIZE
] =
309 0x5f, 0x24, 0x03, 0xd5, /* bti c. */
310 0xf0, 0x7b, 0xbf, 0xa9, /* stp x16, x30, [sp, #-16]! */
311 0x10, 0x00, 0x00, 0x90, /* adrp x16, (GOT+16) */
313 0x11, 0x0A, 0x40, 0xf9, /* ldr x17, [x16, #PLT_GOT+0x10] */
314 0x10, 0x42, 0x00, 0x91, /* add x16, x16,#PLT_GOT+0x10 */
316 0x11, 0x0A, 0x40, 0xb9, /* ldr w17, [x16, #PLT_GOT+0x8] */
317 0x10, 0x22, 0x00, 0x11, /* add w16, w16,#PLT_GOT+0x8 */
319 0x20, 0x02, 0x1f, 0xd6, /* br x17 */
320 0x1f, 0x20, 0x03, 0xd5, /* nop */
321 0x1f, 0x20, 0x03, 0xd5, /* nop */
324 /* Per function entry in a procedure linkage table looks like this
325 if the distance between the PLTGOT and the PLT is < 4GB use
326 these PLT entries. Use BTI versions of the PLTs when enabled. */
327 static const bfd_byte elfNN_aarch64_small_plt_entry
[PLT_SMALL_ENTRY_SIZE
] =
329 0x10, 0x00, 0x00, 0x90, /* adrp x16, PLTGOT + n * 8 */
331 0x11, 0x02, 0x40, 0xf9, /* ldr x17, [x16, PLTGOT + n * 8] */
332 0x10, 0x02, 0x00, 0x91, /* add x16, x16, :lo12:PLTGOT + n * 8 */
334 0x11, 0x02, 0x40, 0xb9, /* ldr w17, [x16, PLTGOT + n * 4] */
335 0x10, 0x02, 0x00, 0x11, /* add w16, w16, :lo12:PLTGOT + n * 4 */
337 0x20, 0x02, 0x1f, 0xd6, /* br x17. */
340 static const bfd_byte
341 elfNN_aarch64_small_plt_bti_entry
[PLT_BTI_SMALL_ENTRY_SIZE
] =
343 0x5f, 0x24, 0x03, 0xd5, /* bti c. */
344 0x10, 0x00, 0x00, 0x90, /* adrp x16, PLTGOT + n * 8 */
346 0x11, 0x02, 0x40, 0xf9, /* ldr x17, [x16, PLTGOT + n * 8] */
347 0x10, 0x02, 0x00, 0x91, /* add x16, x16, :lo12:PLTGOT + n * 8 */
349 0x11, 0x02, 0x40, 0xb9, /* ldr w17, [x16, PLTGOT + n * 4] */
350 0x10, 0x02, 0x00, 0x11, /* add w16, w16, :lo12:PLTGOT + n * 4 */
352 0x20, 0x02, 0x1f, 0xd6, /* br x17. */
353 0x1f, 0x20, 0x03, 0xd5, /* nop */
356 static const bfd_byte
357 elfNN_aarch64_small_plt_pac_entry
[PLT_PAC_SMALL_ENTRY_SIZE
] =
359 0x10, 0x00, 0x00, 0x90, /* adrp x16, PLTGOT + n * 8 */
361 0x11, 0x02, 0x40, 0xf9, /* ldr x17, [x16, PLTGOT + n * 8] */
362 0x10, 0x02, 0x00, 0x91, /* add x16, x16, :lo12:PLTGOT + n * 8 */
364 0x11, 0x02, 0x40, 0xb9, /* ldr w17, [x16, PLTGOT + n * 4] */
365 0x10, 0x02, 0x00, 0x11, /* add w16, w16, :lo12:PLTGOT + n * 4 */
367 0x9f, 0x21, 0x03, 0xd5, /* autia1716 */
368 0x20, 0x02, 0x1f, 0xd6, /* br x17. */
369 0x1f, 0x20, 0x03, 0xd5, /* nop */
372 static const bfd_byte
373 elfNN_aarch64_small_plt_bti_pac_entry
[PLT_BTI_PAC_SMALL_ENTRY_SIZE
] =
375 0x5f, 0x24, 0x03, 0xd5, /* bti c. */
376 0x10, 0x00, 0x00, 0x90, /* adrp x16, PLTGOT + n * 8 */
378 0x11, 0x02, 0x40, 0xf9, /* ldr x17, [x16, PLTGOT + n * 8] */
379 0x10, 0x02, 0x00, 0x91, /* add x16, x16, :lo12:PLTGOT + n * 8 */
381 0x11, 0x02, 0x40, 0xb9, /* ldr w17, [x16, PLTGOT + n * 4] */
382 0x10, 0x02, 0x00, 0x11, /* add w16, w16, :lo12:PLTGOT + n * 4 */
384 0x9f, 0x21, 0x03, 0xd5, /* autia1716 */
385 0x20, 0x02, 0x1f, 0xd6, /* br x17. */
388 static const bfd_byte
389 elfNN_aarch64_tlsdesc_small_plt_entry
[PLT_TLSDESC_ENTRY_SIZE
] =
391 0xe2, 0x0f, 0xbf, 0xa9, /* stp x2, x3, [sp, #-16]! */
392 0x02, 0x00, 0x00, 0x90, /* adrp x2, 0 */
393 0x03, 0x00, 0x00, 0x90, /* adrp x3, 0 */
395 0x42, 0x00, 0x40, 0xf9, /* ldr x2, [x2, #0] */
396 0x63, 0x00, 0x00, 0x91, /* add x3, x3, 0 */
398 0x42, 0x00, 0x40, 0xb9, /* ldr w2, [x2, #0] */
399 0x63, 0x00, 0x00, 0x11, /* add w3, w3, 0 */
401 0x40, 0x00, 0x1f, 0xd6, /* br x2 */
402 0x1f, 0x20, 0x03, 0xd5, /* nop */
403 0x1f, 0x20, 0x03, 0xd5, /* nop */
406 static const bfd_byte
407 elfNN_aarch64_tlsdesc_small_plt_bti_entry
[PLT_TLSDESC_ENTRY_SIZE
] =
409 0x5f, 0x24, 0x03, 0xd5, /* bti c. */
410 0xe2, 0x0f, 0xbf, 0xa9, /* stp x2, x3, [sp, #-16]! */
411 0x02, 0x00, 0x00, 0x90, /* adrp x2, 0 */
412 0x03, 0x00, 0x00, 0x90, /* adrp x3, 0 */
414 0x42, 0x00, 0x40, 0xf9, /* ldr x2, [x2, #0] */
415 0x63, 0x00, 0x00, 0x91, /* add x3, x3, 0 */
417 0x42, 0x00, 0x40, 0xb9, /* ldr w2, [x2, #0] */
418 0x63, 0x00, 0x00, 0x11, /* add w3, w3, 0 */
420 0x40, 0x00, 0x1f, 0xd6, /* br x2 */
421 0x1f, 0x20, 0x03, 0xd5, /* nop */
424 #define elf_info_to_howto elfNN_aarch64_info_to_howto
425 #define elf_info_to_howto_rel elfNN_aarch64_info_to_howto
427 #define AARCH64_ELF_ABI_VERSION 0
429 /* In case we're on a 32-bit machine, construct a 64-bit "-1" value. */
430 #define ALL_ONES (~ (bfd_vma) 0)
432 /* Indexed by the bfd interal reloc enumerators.
433 Therefore, the table needs to be synced with BFD_RELOC_AARCH64_*
436 static reloc_howto_type elfNN_aarch64_howto_table
[] =
440 /* Basic data relocations. */
442 /* Deprecated, but retained for backwards compatibility. */
443 HOWTO64 (R_AARCH64_NULL
, /* type */
445 3, /* size (0 = byte, 1 = short, 2 = long) */
447 FALSE
, /* pc_relative */
449 complain_overflow_dont
, /* complain_on_overflow */
450 bfd_elf_generic_reloc
, /* special_function */
451 "R_AARCH64_NULL", /* name */
452 FALSE
, /* partial_inplace */
455 FALSE
), /* pcrel_offset */
456 HOWTO (R_AARCH64_NONE
, /* type */
458 3, /* size (0 = byte, 1 = short, 2 = long) */
460 FALSE
, /* pc_relative */
462 complain_overflow_dont
, /* complain_on_overflow */
463 bfd_elf_generic_reloc
, /* special_function */
464 "R_AARCH64_NONE", /* name */
465 FALSE
, /* partial_inplace */
468 FALSE
), /* pcrel_offset */
471 HOWTO64 (AARCH64_R (ABS64
), /* type */
473 4, /* size (4 = long long) */
475 FALSE
, /* pc_relative */
477 complain_overflow_unsigned
, /* complain_on_overflow */
478 bfd_elf_generic_reloc
, /* special_function */
479 AARCH64_R_STR (ABS64
), /* name */
480 FALSE
, /* partial_inplace */
481 ALL_ONES
, /* src_mask */
482 ALL_ONES
, /* dst_mask */
483 FALSE
), /* pcrel_offset */
486 HOWTO (AARCH64_R (ABS32
), /* type */
488 2, /* size (0 = byte, 1 = short, 2 = long) */
490 FALSE
, /* pc_relative */
492 complain_overflow_unsigned
, /* complain_on_overflow */
493 bfd_elf_generic_reloc
, /* special_function */
494 AARCH64_R_STR (ABS32
), /* name */
495 FALSE
, /* partial_inplace */
496 0xffffffff, /* src_mask */
497 0xffffffff, /* dst_mask */
498 FALSE
), /* pcrel_offset */
501 HOWTO (AARCH64_R (ABS16
), /* type */
503 1, /* size (0 = byte, 1 = short, 2 = long) */
505 FALSE
, /* pc_relative */
507 complain_overflow_unsigned
, /* complain_on_overflow */
508 bfd_elf_generic_reloc
, /* special_function */
509 AARCH64_R_STR (ABS16
), /* name */
510 FALSE
, /* partial_inplace */
511 0xffff, /* src_mask */
512 0xffff, /* dst_mask */
513 FALSE
), /* pcrel_offset */
515 /* .xword: (S+A-P) */
516 HOWTO64 (AARCH64_R (PREL64
), /* type */
518 4, /* size (4 = long long) */
520 TRUE
, /* pc_relative */
522 complain_overflow_signed
, /* complain_on_overflow */
523 bfd_elf_generic_reloc
, /* special_function */
524 AARCH64_R_STR (PREL64
), /* name */
525 FALSE
, /* partial_inplace */
526 ALL_ONES
, /* src_mask */
527 ALL_ONES
, /* dst_mask */
528 TRUE
), /* pcrel_offset */
531 HOWTO (AARCH64_R (PREL32
), /* type */
533 2, /* size (0 = byte, 1 = short, 2 = long) */
535 TRUE
, /* pc_relative */
537 complain_overflow_signed
, /* complain_on_overflow */
538 bfd_elf_generic_reloc
, /* special_function */
539 AARCH64_R_STR (PREL32
), /* name */
540 FALSE
, /* partial_inplace */
541 0xffffffff, /* src_mask */
542 0xffffffff, /* dst_mask */
543 TRUE
), /* pcrel_offset */
546 HOWTO (AARCH64_R (PREL16
), /* type */
548 1, /* size (0 = byte, 1 = short, 2 = long) */
550 TRUE
, /* pc_relative */
552 complain_overflow_signed
, /* complain_on_overflow */
553 bfd_elf_generic_reloc
, /* special_function */
554 AARCH64_R_STR (PREL16
), /* name */
555 FALSE
, /* partial_inplace */
556 0xffff, /* src_mask */
557 0xffff, /* dst_mask */
558 TRUE
), /* pcrel_offset */
560 /* Group relocations to create a 16, 32, 48 or 64 bit
561 unsigned data or abs address inline. */
563 /* MOVZ: ((S+A) >> 0) & 0xffff */
564 HOWTO (AARCH64_R (MOVW_UABS_G0
), /* type */
566 2, /* size (0 = byte, 1 = short, 2 = long) */
568 FALSE
, /* pc_relative */
570 complain_overflow_unsigned
, /* complain_on_overflow */
571 bfd_elf_generic_reloc
, /* special_function */
572 AARCH64_R_STR (MOVW_UABS_G0
), /* name */
573 FALSE
, /* partial_inplace */
574 0xffff, /* src_mask */
575 0xffff, /* dst_mask */
576 FALSE
), /* pcrel_offset */
578 /* MOVK: ((S+A) >> 0) & 0xffff [no overflow check] */
579 HOWTO (AARCH64_R (MOVW_UABS_G0_NC
), /* type */
581 2, /* size (0 = byte, 1 = short, 2 = long) */
583 FALSE
, /* pc_relative */
585 complain_overflow_dont
, /* complain_on_overflow */
586 bfd_elf_generic_reloc
, /* special_function */
587 AARCH64_R_STR (MOVW_UABS_G0_NC
), /* name */
588 FALSE
, /* partial_inplace */
589 0xffff, /* src_mask */
590 0xffff, /* dst_mask */
591 FALSE
), /* pcrel_offset */
593 /* MOVZ: ((S+A) >> 16) & 0xffff */
594 HOWTO (AARCH64_R (MOVW_UABS_G1
), /* type */
596 2, /* size (0 = byte, 1 = short, 2 = long) */
598 FALSE
, /* pc_relative */
600 complain_overflow_unsigned
, /* complain_on_overflow */
601 bfd_elf_generic_reloc
, /* special_function */
602 AARCH64_R_STR (MOVW_UABS_G1
), /* name */
603 FALSE
, /* partial_inplace */
604 0xffff, /* src_mask */
605 0xffff, /* dst_mask */
606 FALSE
), /* pcrel_offset */
608 /* MOVK: ((S+A) >> 16) & 0xffff [no overflow check] */
609 HOWTO64 (AARCH64_R (MOVW_UABS_G1_NC
), /* type */
611 2, /* size (0 = byte, 1 = short, 2 = long) */
613 FALSE
, /* pc_relative */
615 complain_overflow_dont
, /* complain_on_overflow */
616 bfd_elf_generic_reloc
, /* special_function */
617 AARCH64_R_STR (MOVW_UABS_G1_NC
), /* name */
618 FALSE
, /* partial_inplace */
619 0xffff, /* src_mask */
620 0xffff, /* dst_mask */
621 FALSE
), /* pcrel_offset */
623 /* MOVZ: ((S+A) >> 32) & 0xffff */
624 HOWTO64 (AARCH64_R (MOVW_UABS_G2
), /* type */
626 2, /* size (0 = byte, 1 = short, 2 = long) */
628 FALSE
, /* pc_relative */
630 complain_overflow_unsigned
, /* complain_on_overflow */
631 bfd_elf_generic_reloc
, /* special_function */
632 AARCH64_R_STR (MOVW_UABS_G2
), /* name */
633 FALSE
, /* partial_inplace */
634 0xffff, /* src_mask */
635 0xffff, /* dst_mask */
636 FALSE
), /* pcrel_offset */
638 /* MOVK: ((S+A) >> 32) & 0xffff [no overflow check] */
639 HOWTO64 (AARCH64_R (MOVW_UABS_G2_NC
), /* type */
641 2, /* size (0 = byte, 1 = short, 2 = long) */
643 FALSE
, /* pc_relative */
645 complain_overflow_dont
, /* complain_on_overflow */
646 bfd_elf_generic_reloc
, /* special_function */
647 AARCH64_R_STR (MOVW_UABS_G2_NC
), /* name */
648 FALSE
, /* partial_inplace */
649 0xffff, /* src_mask */
650 0xffff, /* dst_mask */
651 FALSE
), /* pcrel_offset */
653 /* MOVZ: ((S+A) >> 48) & 0xffff */
654 HOWTO64 (AARCH64_R (MOVW_UABS_G3
), /* type */
656 2, /* size (0 = byte, 1 = short, 2 = long) */
658 FALSE
, /* pc_relative */
660 complain_overflow_unsigned
, /* complain_on_overflow */
661 bfd_elf_generic_reloc
, /* special_function */
662 AARCH64_R_STR (MOVW_UABS_G3
), /* name */
663 FALSE
, /* partial_inplace */
664 0xffff, /* src_mask */
665 0xffff, /* dst_mask */
666 FALSE
), /* pcrel_offset */
668 /* Group relocations to create high part of a 16, 32, 48 or 64 bit
669 signed data or abs address inline. Will change instruction
670 to MOVN or MOVZ depending on sign of calculated value. */
672 /* MOV[ZN]: ((S+A) >> 0) & 0xffff */
673 HOWTO (AARCH64_R (MOVW_SABS_G0
), /* type */
675 2, /* size (0 = byte, 1 = short, 2 = long) */
677 FALSE
, /* pc_relative */
679 complain_overflow_signed
, /* complain_on_overflow */
680 bfd_elf_generic_reloc
, /* special_function */
681 AARCH64_R_STR (MOVW_SABS_G0
), /* name */
682 FALSE
, /* partial_inplace */
683 0xffff, /* src_mask */
684 0xffff, /* dst_mask */
685 FALSE
), /* pcrel_offset */
687 /* MOV[ZN]: ((S+A) >> 16) & 0xffff */
688 HOWTO64 (AARCH64_R (MOVW_SABS_G1
), /* type */
690 2, /* size (0 = byte, 1 = short, 2 = long) */
692 FALSE
, /* pc_relative */
694 complain_overflow_signed
, /* complain_on_overflow */
695 bfd_elf_generic_reloc
, /* special_function */
696 AARCH64_R_STR (MOVW_SABS_G1
), /* name */
697 FALSE
, /* partial_inplace */
698 0xffff, /* src_mask */
699 0xffff, /* dst_mask */
700 FALSE
), /* pcrel_offset */
702 /* MOV[ZN]: ((S+A) >> 32) & 0xffff */
703 HOWTO64 (AARCH64_R (MOVW_SABS_G2
), /* type */
705 2, /* size (0 = byte, 1 = short, 2 = long) */
707 FALSE
, /* pc_relative */
709 complain_overflow_signed
, /* complain_on_overflow */
710 bfd_elf_generic_reloc
, /* special_function */
711 AARCH64_R_STR (MOVW_SABS_G2
), /* name */
712 FALSE
, /* partial_inplace */
713 0xffff, /* src_mask */
714 0xffff, /* dst_mask */
715 FALSE
), /* pcrel_offset */
717 /* Group relocations to create a 16, 32, 48 or 64 bit
718 PC relative address inline. */
720 /* MOV[NZ]: ((S+A-P) >> 0) & 0xffff */
721 HOWTO (AARCH64_R (MOVW_PREL_G0
), /* type */
723 2, /* size (0 = byte, 1 = short, 2 = long) */
725 TRUE
, /* pc_relative */
727 complain_overflow_signed
, /* complain_on_overflow */
728 bfd_elf_generic_reloc
, /* special_function */
729 AARCH64_R_STR (MOVW_PREL_G0
), /* name */
730 FALSE
, /* partial_inplace */
731 0xffff, /* src_mask */
732 0xffff, /* dst_mask */
733 TRUE
), /* pcrel_offset */
735 /* MOVK: ((S+A-P) >> 0) & 0xffff [no overflow check] */
736 HOWTO (AARCH64_R (MOVW_PREL_G0_NC
), /* type */
738 2, /* size (0 = byte, 1 = short, 2 = long) */
740 TRUE
, /* pc_relative */
742 complain_overflow_dont
, /* complain_on_overflow */
743 bfd_elf_generic_reloc
, /* special_function */
744 AARCH64_R_STR (MOVW_PREL_G0_NC
), /* name */
745 FALSE
, /* partial_inplace */
746 0xffff, /* src_mask */
747 0xffff, /* dst_mask */
748 TRUE
), /* pcrel_offset */
750 /* MOV[NZ]: ((S+A-P) >> 16) & 0xffff */
751 HOWTO (AARCH64_R (MOVW_PREL_G1
), /* type */
753 2, /* size (0 = byte, 1 = short, 2 = long) */
755 TRUE
, /* pc_relative */
757 complain_overflow_signed
, /* complain_on_overflow */
758 bfd_elf_generic_reloc
, /* special_function */
759 AARCH64_R_STR (MOVW_PREL_G1
), /* name */
760 FALSE
, /* partial_inplace */
761 0xffff, /* src_mask */
762 0xffff, /* dst_mask */
763 TRUE
), /* pcrel_offset */
765 /* MOVK: ((S+A-P) >> 16) & 0xffff [no overflow check] */
766 HOWTO64 (AARCH64_R (MOVW_PREL_G1_NC
), /* type */
768 2, /* size (0 = byte, 1 = short, 2 = long) */
770 TRUE
, /* pc_relative */
772 complain_overflow_dont
, /* complain_on_overflow */
773 bfd_elf_generic_reloc
, /* special_function */
774 AARCH64_R_STR (MOVW_PREL_G1_NC
), /* name */
775 FALSE
, /* partial_inplace */
776 0xffff, /* src_mask */
777 0xffff, /* dst_mask */
778 TRUE
), /* pcrel_offset */
780 /* MOV[NZ]: ((S+A-P) >> 32) & 0xffff */
781 HOWTO64 (AARCH64_R (MOVW_PREL_G2
), /* type */
783 2, /* size (0 = byte, 1 = short, 2 = long) */
785 TRUE
, /* pc_relative */
787 complain_overflow_signed
, /* complain_on_overflow */
788 bfd_elf_generic_reloc
, /* special_function */
789 AARCH64_R_STR (MOVW_PREL_G2
), /* name */
790 FALSE
, /* partial_inplace */
791 0xffff, /* src_mask */
792 0xffff, /* dst_mask */
793 TRUE
), /* pcrel_offset */
795 /* MOVK: ((S+A-P) >> 32) & 0xffff [no overflow check] */
796 HOWTO64 (AARCH64_R (MOVW_PREL_G2_NC
), /* type */
798 2, /* size (0 = byte, 1 = short, 2 = long) */
800 TRUE
, /* pc_relative */
802 complain_overflow_dont
, /* complain_on_overflow */
803 bfd_elf_generic_reloc
, /* special_function */
804 AARCH64_R_STR (MOVW_PREL_G2_NC
), /* name */
805 FALSE
, /* partial_inplace */
806 0xffff, /* src_mask */
807 0xffff, /* dst_mask */
808 TRUE
), /* pcrel_offset */
810 /* MOV[NZ]: ((S+A-P) >> 48) & 0xffff */
811 HOWTO64 (AARCH64_R (MOVW_PREL_G3
), /* type */
813 2, /* size (0 = byte, 1 = short, 2 = long) */
815 TRUE
, /* pc_relative */
817 complain_overflow_dont
, /* complain_on_overflow */
818 bfd_elf_generic_reloc
, /* special_function */
819 AARCH64_R_STR (MOVW_PREL_G3
), /* name */
820 FALSE
, /* partial_inplace */
821 0xffff, /* src_mask */
822 0xffff, /* dst_mask */
823 TRUE
), /* pcrel_offset */
825 /* Relocations to generate 19, 21 and 33 bit PC-relative load/store
826 addresses: PG(x) is (x & ~0xfff). */
828 /* LD-lit: ((S+A-P) >> 2) & 0x7ffff */
829 HOWTO (AARCH64_R (LD_PREL_LO19
), /* type */
831 2, /* size (0 = byte, 1 = short, 2 = long) */
833 TRUE
, /* pc_relative */
835 complain_overflow_signed
, /* complain_on_overflow */
836 bfd_elf_generic_reloc
, /* special_function */
837 AARCH64_R_STR (LD_PREL_LO19
), /* name */
838 FALSE
, /* partial_inplace */
839 0x7ffff, /* src_mask */
840 0x7ffff, /* dst_mask */
841 TRUE
), /* pcrel_offset */
843 /* ADR: (S+A-P) & 0x1fffff */
844 HOWTO (AARCH64_R (ADR_PREL_LO21
), /* type */
846 2, /* size (0 = byte, 1 = short, 2 = long) */
848 TRUE
, /* pc_relative */
850 complain_overflow_signed
, /* complain_on_overflow */
851 bfd_elf_generic_reloc
, /* special_function */
852 AARCH64_R_STR (ADR_PREL_LO21
), /* name */
853 FALSE
, /* partial_inplace */
854 0x1fffff, /* src_mask */
855 0x1fffff, /* dst_mask */
856 TRUE
), /* pcrel_offset */
858 /* ADRP: ((PG(S+A)-PG(P)) >> 12) & 0x1fffff */
859 HOWTO (AARCH64_R (ADR_PREL_PG_HI21
), /* type */
861 2, /* size (0 = byte, 1 = short, 2 = long) */
863 TRUE
, /* pc_relative */
865 complain_overflow_signed
, /* complain_on_overflow */
866 bfd_elf_generic_reloc
, /* special_function */
867 AARCH64_R_STR (ADR_PREL_PG_HI21
), /* name */
868 FALSE
, /* partial_inplace */
869 0x1fffff, /* src_mask */
870 0x1fffff, /* dst_mask */
871 TRUE
), /* pcrel_offset */
873 /* ADRP: ((PG(S+A)-PG(P)) >> 12) & 0x1fffff [no overflow check] */
874 HOWTO64 (AARCH64_R (ADR_PREL_PG_HI21_NC
), /* type */
876 2, /* size (0 = byte, 1 = short, 2 = long) */
878 TRUE
, /* pc_relative */
880 complain_overflow_dont
, /* complain_on_overflow */
881 bfd_elf_generic_reloc
, /* special_function */
882 AARCH64_R_STR (ADR_PREL_PG_HI21_NC
), /* name */
883 FALSE
, /* partial_inplace */
884 0x1fffff, /* src_mask */
885 0x1fffff, /* dst_mask */
886 TRUE
), /* pcrel_offset */
888 /* ADD: (S+A) & 0xfff [no overflow check] */
889 HOWTO (AARCH64_R (ADD_ABS_LO12_NC
), /* type */
891 2, /* size (0 = byte, 1 = short, 2 = long) */
893 FALSE
, /* pc_relative */
895 complain_overflow_dont
, /* complain_on_overflow */
896 bfd_elf_generic_reloc
, /* special_function */
897 AARCH64_R_STR (ADD_ABS_LO12_NC
), /* name */
898 FALSE
, /* partial_inplace */
899 0x3ffc00, /* src_mask */
900 0x3ffc00, /* dst_mask */
901 FALSE
), /* pcrel_offset */
903 /* LD/ST8: (S+A) & 0xfff */
904 HOWTO (AARCH64_R (LDST8_ABS_LO12_NC
), /* type */
906 2, /* size (0 = byte, 1 = short, 2 = long) */
908 FALSE
, /* pc_relative */
910 complain_overflow_dont
, /* complain_on_overflow */
911 bfd_elf_generic_reloc
, /* special_function */
912 AARCH64_R_STR (LDST8_ABS_LO12_NC
), /* name */
913 FALSE
, /* partial_inplace */
914 0xfff, /* src_mask */
915 0xfff, /* dst_mask */
916 FALSE
), /* pcrel_offset */
918 /* Relocations for control-flow instructions. */
920 /* TBZ/NZ: ((S+A-P) >> 2) & 0x3fff */
921 HOWTO (AARCH64_R (TSTBR14
), /* type */
923 2, /* size (0 = byte, 1 = short, 2 = long) */
925 TRUE
, /* pc_relative */
927 complain_overflow_signed
, /* complain_on_overflow */
928 bfd_elf_generic_reloc
, /* special_function */
929 AARCH64_R_STR (TSTBR14
), /* name */
930 FALSE
, /* partial_inplace */
931 0x3fff, /* src_mask */
932 0x3fff, /* dst_mask */
933 TRUE
), /* pcrel_offset */
935 /* B.cond: ((S+A-P) >> 2) & 0x7ffff */
936 HOWTO (AARCH64_R (CONDBR19
), /* type */
938 2, /* size (0 = byte, 1 = short, 2 = long) */
940 TRUE
, /* pc_relative */
942 complain_overflow_signed
, /* complain_on_overflow */
943 bfd_elf_generic_reloc
, /* special_function */
944 AARCH64_R_STR (CONDBR19
), /* name */
945 FALSE
, /* partial_inplace */
946 0x7ffff, /* src_mask */
947 0x7ffff, /* dst_mask */
948 TRUE
), /* pcrel_offset */
950 /* B: ((S+A-P) >> 2) & 0x3ffffff */
951 HOWTO (AARCH64_R (JUMP26
), /* type */
953 2, /* size (0 = byte, 1 = short, 2 = long) */
955 TRUE
, /* pc_relative */
957 complain_overflow_signed
, /* complain_on_overflow */
958 bfd_elf_generic_reloc
, /* special_function */
959 AARCH64_R_STR (JUMP26
), /* name */
960 FALSE
, /* partial_inplace */
961 0x3ffffff, /* src_mask */
962 0x3ffffff, /* dst_mask */
963 TRUE
), /* pcrel_offset */
965 /* BL: ((S+A-P) >> 2) & 0x3ffffff */
966 HOWTO (AARCH64_R (CALL26
), /* type */
968 2, /* size (0 = byte, 1 = short, 2 = long) */
970 TRUE
, /* pc_relative */
972 complain_overflow_signed
, /* complain_on_overflow */
973 bfd_elf_generic_reloc
, /* special_function */
974 AARCH64_R_STR (CALL26
), /* name */
975 FALSE
, /* partial_inplace */
976 0x3ffffff, /* src_mask */
977 0x3ffffff, /* dst_mask */
978 TRUE
), /* pcrel_offset */
980 /* LD/ST16: (S+A) & 0xffe */
981 HOWTO (AARCH64_R (LDST16_ABS_LO12_NC
), /* type */
983 2, /* size (0 = byte, 1 = short, 2 = long) */
985 FALSE
, /* pc_relative */
987 complain_overflow_dont
, /* complain_on_overflow */
988 bfd_elf_generic_reloc
, /* special_function */
989 AARCH64_R_STR (LDST16_ABS_LO12_NC
), /* name */
990 FALSE
, /* partial_inplace */
991 0xffe, /* src_mask */
992 0xffe, /* dst_mask */
993 FALSE
), /* pcrel_offset */
995 /* LD/ST32: (S+A) & 0xffc */
996 HOWTO (AARCH64_R (LDST32_ABS_LO12_NC
), /* type */
998 2, /* size (0 = byte, 1 = short, 2 = long) */
1000 FALSE
, /* pc_relative */
1002 complain_overflow_dont
, /* complain_on_overflow */
1003 bfd_elf_generic_reloc
, /* special_function */
1004 AARCH64_R_STR (LDST32_ABS_LO12_NC
), /* name */
1005 FALSE
, /* partial_inplace */
1006 0xffc, /* src_mask */
1007 0xffc, /* dst_mask */
1008 FALSE
), /* pcrel_offset */
1010 /* LD/ST64: (S+A) & 0xff8 */
1011 HOWTO (AARCH64_R (LDST64_ABS_LO12_NC
), /* type */
1013 2, /* size (0 = byte, 1 = short, 2 = long) */
1015 FALSE
, /* pc_relative */
1017 complain_overflow_dont
, /* complain_on_overflow */
1018 bfd_elf_generic_reloc
, /* special_function */
1019 AARCH64_R_STR (LDST64_ABS_LO12_NC
), /* name */
1020 FALSE
, /* partial_inplace */
1021 0xff8, /* src_mask */
1022 0xff8, /* dst_mask */
1023 FALSE
), /* pcrel_offset */
1025 /* LD/ST128: (S+A) & 0xff0 */
1026 HOWTO (AARCH64_R (LDST128_ABS_LO12_NC
), /* type */
1028 2, /* size (0 = byte, 1 = short, 2 = long) */
1030 FALSE
, /* pc_relative */
1032 complain_overflow_dont
, /* complain_on_overflow */
1033 bfd_elf_generic_reloc
, /* special_function */
1034 AARCH64_R_STR (LDST128_ABS_LO12_NC
), /* name */
1035 FALSE
, /* partial_inplace */
1036 0xff0, /* src_mask */
1037 0xff0, /* dst_mask */
1038 FALSE
), /* pcrel_offset */
1040 /* Set a load-literal immediate field to bits
1041 0x1FFFFC of G(S)-P */
1042 HOWTO (AARCH64_R (GOT_LD_PREL19
), /* type */
1044 2, /* size (0 = byte,1 = short,2 = long) */
1046 TRUE
, /* pc_relative */
1048 complain_overflow_signed
, /* complain_on_overflow */
1049 bfd_elf_generic_reloc
, /* special_function */
1050 AARCH64_R_STR (GOT_LD_PREL19
), /* name */
1051 FALSE
, /* partial_inplace */
1052 0xffffe0, /* src_mask */
1053 0xffffe0, /* dst_mask */
1054 TRUE
), /* pcrel_offset */
1056 /* Get to the page for the GOT entry for the symbol
1057 (G(S) - P) using an ADRP instruction. */
1058 HOWTO (AARCH64_R (ADR_GOT_PAGE
), /* type */
1059 12, /* rightshift */
1060 2, /* size (0 = byte, 1 = short, 2 = long) */
1062 TRUE
, /* pc_relative */
1064 complain_overflow_dont
, /* complain_on_overflow */
1065 bfd_elf_generic_reloc
, /* special_function */
1066 AARCH64_R_STR (ADR_GOT_PAGE
), /* name */
1067 FALSE
, /* partial_inplace */
1068 0x1fffff, /* src_mask */
1069 0x1fffff, /* dst_mask */
1070 TRUE
), /* pcrel_offset */
1072 /* LD64: GOT offset G(S) & 0xff8 */
1073 HOWTO64 (AARCH64_R (LD64_GOT_LO12_NC
), /* type */
1075 2, /* size (0 = byte, 1 = short, 2 = long) */
1077 FALSE
, /* pc_relative */
1079 complain_overflow_dont
, /* complain_on_overflow */
1080 bfd_elf_generic_reloc
, /* special_function */
1081 AARCH64_R_STR (LD64_GOT_LO12_NC
), /* name */
1082 FALSE
, /* partial_inplace */
1083 0xff8, /* src_mask */
1084 0xff8, /* dst_mask */
1085 FALSE
), /* pcrel_offset */
1087 /* LD32: GOT offset G(S) & 0xffc */
1088 HOWTO32 (AARCH64_R (LD32_GOT_LO12_NC
), /* type */
1090 2, /* size (0 = byte, 1 = short, 2 = long) */
1092 FALSE
, /* pc_relative */
1094 complain_overflow_dont
, /* complain_on_overflow */
1095 bfd_elf_generic_reloc
, /* special_function */
1096 AARCH64_R_STR (LD32_GOT_LO12_NC
), /* name */
1097 FALSE
, /* partial_inplace */
1098 0xffc, /* src_mask */
1099 0xffc, /* dst_mask */
1100 FALSE
), /* pcrel_offset */
1102 /* Lower 16 bits of GOT offset for the symbol. */
1103 HOWTO64 (AARCH64_R (MOVW_GOTOFF_G0_NC
), /* type */
1105 2, /* size (0 = byte, 1 = short, 2 = long) */
1107 FALSE
, /* pc_relative */
1109 complain_overflow_dont
, /* complain_on_overflow */
1110 bfd_elf_generic_reloc
, /* special_function */
1111 AARCH64_R_STR (MOVW_GOTOFF_G0_NC
), /* name */
1112 FALSE
, /* partial_inplace */
1113 0xffff, /* src_mask */
1114 0xffff, /* dst_mask */
1115 FALSE
), /* pcrel_offset */
1117 /* Higher 16 bits of GOT offset for the symbol. */
1118 HOWTO64 (AARCH64_R (MOVW_GOTOFF_G1
), /* type */
1119 16, /* rightshift */
1120 2, /* size (0 = byte, 1 = short, 2 = long) */
1122 FALSE
, /* pc_relative */
1124 complain_overflow_unsigned
, /* complain_on_overflow */
1125 bfd_elf_generic_reloc
, /* special_function */
1126 AARCH64_R_STR (MOVW_GOTOFF_G1
), /* name */
1127 FALSE
, /* partial_inplace */
1128 0xffff, /* src_mask */
1129 0xffff, /* dst_mask */
1130 FALSE
), /* pcrel_offset */
1132 /* LD64: GOT offset for the symbol. */
1133 HOWTO64 (AARCH64_R (LD64_GOTOFF_LO15
), /* type */
1135 2, /* size (0 = byte, 1 = short, 2 = long) */
1137 FALSE
, /* pc_relative */
1139 complain_overflow_unsigned
, /* complain_on_overflow */
1140 bfd_elf_generic_reloc
, /* special_function */
1141 AARCH64_R_STR (LD64_GOTOFF_LO15
), /* name */
1142 FALSE
, /* partial_inplace */
1143 0x7ff8, /* src_mask */
1144 0x7ff8, /* dst_mask */
1145 FALSE
), /* pcrel_offset */
1147 /* LD32: GOT offset to the page address of GOT table.
1148 (G(S) - PAGE (_GLOBAL_OFFSET_TABLE_)) & 0x5ffc. */
1149 HOWTO32 (AARCH64_R (LD32_GOTPAGE_LO14
), /* type */
1151 2, /* size (0 = byte, 1 = short, 2 = long) */
1153 FALSE
, /* pc_relative */
1155 complain_overflow_unsigned
, /* complain_on_overflow */
1156 bfd_elf_generic_reloc
, /* special_function */
1157 AARCH64_R_STR (LD32_GOTPAGE_LO14
), /* name */
1158 FALSE
, /* partial_inplace */
1159 0x5ffc, /* src_mask */
1160 0x5ffc, /* dst_mask */
1161 FALSE
), /* pcrel_offset */
1163 /* LD64: GOT offset to the page address of GOT table.
1164 (G(S) - PAGE (_GLOBAL_OFFSET_TABLE_)) & 0x7ff8. */
1165 HOWTO64 (AARCH64_R (LD64_GOTPAGE_LO15
), /* type */
1167 2, /* size (0 = byte, 1 = short, 2 = long) */
1169 FALSE
, /* pc_relative */
1171 complain_overflow_unsigned
, /* complain_on_overflow */
1172 bfd_elf_generic_reloc
, /* special_function */
1173 AARCH64_R_STR (LD64_GOTPAGE_LO15
), /* name */
1174 FALSE
, /* partial_inplace */
1175 0x7ff8, /* src_mask */
1176 0x7ff8, /* dst_mask */
1177 FALSE
), /* pcrel_offset */
1179 /* Get to the page for the GOT entry for the symbol
1180 (G(S) - P) using an ADRP instruction. */
1181 HOWTO (AARCH64_R (TLSGD_ADR_PAGE21
), /* type */
1182 12, /* rightshift */
1183 2, /* size (0 = byte, 1 = short, 2 = long) */
1185 TRUE
, /* pc_relative */
1187 complain_overflow_dont
, /* complain_on_overflow */
1188 bfd_elf_generic_reloc
, /* special_function */
1189 AARCH64_R_STR (TLSGD_ADR_PAGE21
), /* name */
1190 FALSE
, /* partial_inplace */
1191 0x1fffff, /* src_mask */
1192 0x1fffff, /* dst_mask */
1193 TRUE
), /* pcrel_offset */
1195 HOWTO (AARCH64_R (TLSGD_ADR_PREL21
), /* type */
1197 2, /* size (0 = byte, 1 = short, 2 = long) */
1199 TRUE
, /* pc_relative */
1201 complain_overflow_dont
, /* complain_on_overflow */
1202 bfd_elf_generic_reloc
, /* special_function */
1203 AARCH64_R_STR (TLSGD_ADR_PREL21
), /* name */
1204 FALSE
, /* partial_inplace */
1205 0x1fffff, /* src_mask */
1206 0x1fffff, /* dst_mask */
1207 TRUE
), /* pcrel_offset */
1209 /* ADD: GOT offset G(S) & 0xff8 [no overflow check] */
1210 HOWTO (AARCH64_R (TLSGD_ADD_LO12_NC
), /* type */
1212 2, /* size (0 = byte, 1 = short, 2 = long) */
1214 FALSE
, /* pc_relative */
1216 complain_overflow_dont
, /* complain_on_overflow */
1217 bfd_elf_generic_reloc
, /* special_function */
1218 AARCH64_R_STR (TLSGD_ADD_LO12_NC
), /* name */
1219 FALSE
, /* partial_inplace */
1220 0xfff, /* src_mask */
1221 0xfff, /* dst_mask */
1222 FALSE
), /* pcrel_offset */
1224 /* Lower 16 bits of GOT offset to tls_index. */
1225 HOWTO64 (AARCH64_R (TLSGD_MOVW_G0_NC
), /* type */
1227 2, /* size (0 = byte, 1 = short, 2 = long) */
1229 FALSE
, /* pc_relative */
1231 complain_overflow_dont
, /* complain_on_overflow */
1232 bfd_elf_generic_reloc
, /* special_function */
1233 AARCH64_R_STR (TLSGD_MOVW_G0_NC
), /* name */
1234 FALSE
, /* partial_inplace */
1235 0xffff, /* src_mask */
1236 0xffff, /* dst_mask */
1237 FALSE
), /* pcrel_offset */
1239 /* Higher 16 bits of GOT offset to tls_index. */
1240 HOWTO64 (AARCH64_R (TLSGD_MOVW_G1
), /* type */
1241 16, /* rightshift */
1242 2, /* size (0 = byte, 1 = short, 2 = long) */
1244 FALSE
, /* pc_relative */
1246 complain_overflow_unsigned
, /* complain_on_overflow */
1247 bfd_elf_generic_reloc
, /* special_function */
1248 AARCH64_R_STR (TLSGD_MOVW_G1
), /* name */
1249 FALSE
, /* partial_inplace */
1250 0xffff, /* src_mask */
1251 0xffff, /* dst_mask */
1252 FALSE
), /* pcrel_offset */
1254 HOWTO (AARCH64_R (TLSIE_ADR_GOTTPREL_PAGE21
), /* type */
1255 12, /* rightshift */
1256 2, /* size (0 = byte, 1 = short, 2 = long) */
1258 FALSE
, /* pc_relative */
1260 complain_overflow_dont
, /* complain_on_overflow */
1261 bfd_elf_generic_reloc
, /* special_function */
1262 AARCH64_R_STR (TLSIE_ADR_GOTTPREL_PAGE21
), /* name */
1263 FALSE
, /* partial_inplace */
1264 0x1fffff, /* src_mask */
1265 0x1fffff, /* dst_mask */
1266 FALSE
), /* pcrel_offset */
1268 HOWTO64 (AARCH64_R (TLSIE_LD64_GOTTPREL_LO12_NC
), /* type */
1270 2, /* size (0 = byte, 1 = short, 2 = long) */
1272 FALSE
, /* pc_relative */
1274 complain_overflow_dont
, /* complain_on_overflow */
1275 bfd_elf_generic_reloc
, /* special_function */
1276 AARCH64_R_STR (TLSIE_LD64_GOTTPREL_LO12_NC
), /* name */
1277 FALSE
, /* partial_inplace */
1278 0xff8, /* src_mask */
1279 0xff8, /* dst_mask */
1280 FALSE
), /* pcrel_offset */
1282 HOWTO32 (AARCH64_R (TLSIE_LD32_GOTTPREL_LO12_NC
), /* type */
1284 2, /* size (0 = byte, 1 = short, 2 = long) */
1286 FALSE
, /* pc_relative */
1288 complain_overflow_dont
, /* complain_on_overflow */
1289 bfd_elf_generic_reloc
, /* special_function */
1290 AARCH64_R_STR (TLSIE_LD32_GOTTPREL_LO12_NC
), /* name */
1291 FALSE
, /* partial_inplace */
1292 0xffc, /* src_mask */
1293 0xffc, /* dst_mask */
1294 FALSE
), /* pcrel_offset */
1296 HOWTO (AARCH64_R (TLSIE_LD_GOTTPREL_PREL19
), /* type */
1298 2, /* size (0 = byte, 1 = short, 2 = long) */
1300 FALSE
, /* pc_relative */
1302 complain_overflow_dont
, /* complain_on_overflow */
1303 bfd_elf_generic_reloc
, /* special_function */
1304 AARCH64_R_STR (TLSIE_LD_GOTTPREL_PREL19
), /* name */
1305 FALSE
, /* partial_inplace */
1306 0x1ffffc, /* src_mask */
1307 0x1ffffc, /* dst_mask */
1308 FALSE
), /* pcrel_offset */
1310 HOWTO64 (AARCH64_R (TLSIE_MOVW_GOTTPREL_G0_NC
), /* type */
1312 2, /* size (0 = byte, 1 = short, 2 = long) */
1314 FALSE
, /* pc_relative */
1316 complain_overflow_dont
, /* complain_on_overflow */
1317 bfd_elf_generic_reloc
, /* special_function */
1318 AARCH64_R_STR (TLSIE_MOVW_GOTTPREL_G0_NC
), /* name */
1319 FALSE
, /* partial_inplace */
1320 0xffff, /* src_mask */
1321 0xffff, /* dst_mask */
1322 FALSE
), /* pcrel_offset */
1324 HOWTO64 (AARCH64_R (TLSIE_MOVW_GOTTPREL_G1
), /* type */
1325 16, /* rightshift */
1326 2, /* size (0 = byte, 1 = short, 2 = long) */
1328 FALSE
, /* pc_relative */
1330 complain_overflow_unsigned
, /* complain_on_overflow */
1331 bfd_elf_generic_reloc
, /* special_function */
1332 AARCH64_R_STR (TLSIE_MOVW_GOTTPREL_G1
), /* name */
1333 FALSE
, /* partial_inplace */
1334 0xffff, /* src_mask */
1335 0xffff, /* dst_mask */
1336 FALSE
), /* pcrel_offset */
1338 /* ADD: bit[23:12] of byte offset to module TLS base address. */
1339 HOWTO (AARCH64_R (TLSLD_ADD_DTPREL_HI12
), /* type */
1340 12, /* rightshift */
1341 2, /* size (0 = byte, 1 = short, 2 = long) */
1343 FALSE
, /* pc_relative */
1345 complain_overflow_unsigned
, /* complain_on_overflow */
1346 bfd_elf_generic_reloc
, /* special_function */
1347 AARCH64_R_STR (TLSLD_ADD_DTPREL_HI12
), /* name */
1348 FALSE
, /* partial_inplace */
1349 0xfff, /* src_mask */
1350 0xfff, /* dst_mask */
1351 FALSE
), /* pcrel_offset */
1353 /* Unsigned 12 bit byte offset to module TLS base address. */
1354 HOWTO (AARCH64_R (TLSLD_ADD_DTPREL_LO12
), /* type */
1356 2, /* size (0 = byte, 1 = short, 2 = long) */
1358 FALSE
, /* pc_relative */
1360 complain_overflow_unsigned
, /* complain_on_overflow */
1361 bfd_elf_generic_reloc
, /* special_function */
1362 AARCH64_R_STR (TLSLD_ADD_DTPREL_LO12
), /* name */
1363 FALSE
, /* partial_inplace */
1364 0xfff, /* src_mask */
1365 0xfff, /* dst_mask */
1366 FALSE
), /* pcrel_offset */
1368 /* No overflow check version of BFD_RELOC_AARCH64_TLSLD_ADD_DTPREL_LO12. */
1369 HOWTO (AARCH64_R (TLSLD_ADD_DTPREL_LO12_NC
), /* type */
1371 2, /* size (0 = byte, 1 = short, 2 = long) */
1373 FALSE
, /* pc_relative */
1375 complain_overflow_dont
, /* complain_on_overflow */
1376 bfd_elf_generic_reloc
, /* special_function */
1377 AARCH64_R_STR (TLSLD_ADD_DTPREL_LO12_NC
), /* name */
1378 FALSE
, /* partial_inplace */
1379 0xfff, /* src_mask */
1380 0xfff, /* dst_mask */
1381 FALSE
), /* pcrel_offset */
1383 /* ADD: GOT offset G(S) & 0xff8 [no overflow check] */
1384 HOWTO (AARCH64_R (TLSLD_ADD_LO12_NC
), /* type */
1386 2, /* size (0 = byte, 1 = short, 2 = long) */
1388 FALSE
, /* pc_relative */
1390 complain_overflow_dont
, /* complain_on_overflow */
1391 bfd_elf_generic_reloc
, /* special_function */
1392 AARCH64_R_STR (TLSLD_ADD_LO12_NC
), /* name */
1393 FALSE
, /* partial_inplace */
1394 0xfff, /* src_mask */
1395 0xfff, /* dst_mask */
1396 FALSE
), /* pcrel_offset */
1398 /* Get to the page for the GOT entry for the symbol
1399 (G(S) - P) using an ADRP instruction. */
1400 HOWTO (AARCH64_R (TLSLD_ADR_PAGE21
), /* type */
1401 12, /* rightshift */
1402 2, /* size (0 = byte, 1 = short, 2 = long) */
1404 TRUE
, /* pc_relative */
1406 complain_overflow_signed
, /* complain_on_overflow */
1407 bfd_elf_generic_reloc
, /* special_function */
1408 AARCH64_R_STR (TLSLD_ADR_PAGE21
), /* name */
1409 FALSE
, /* partial_inplace */
1410 0x1fffff, /* src_mask */
1411 0x1fffff, /* dst_mask */
1412 TRUE
), /* pcrel_offset */
1414 HOWTO (AARCH64_R (TLSLD_ADR_PREL21
), /* type */
1416 2, /* size (0 = byte, 1 = short, 2 = long) */
1418 TRUE
, /* pc_relative */
1420 complain_overflow_signed
, /* complain_on_overflow */
1421 bfd_elf_generic_reloc
, /* special_function */
1422 AARCH64_R_STR (TLSLD_ADR_PREL21
), /* name */
1423 FALSE
, /* partial_inplace */
1424 0x1fffff, /* src_mask */
1425 0x1fffff, /* dst_mask */
1426 TRUE
), /* pcrel_offset */
1428 /* LD/ST16: bit[11:1] of byte offset to module TLS base address. */
1429 HOWTO64 (AARCH64_R (TLSLD_LDST16_DTPREL_LO12
), /* type */
1431 2, /* size (0 = byte, 1 = short, 2 = long) */
1433 FALSE
, /* pc_relative */
1435 complain_overflow_unsigned
, /* complain_on_overflow */
1436 bfd_elf_generic_reloc
, /* special_function */
1437 AARCH64_R_STR (TLSLD_LDST16_DTPREL_LO12
), /* name */
1438 FALSE
, /* partial_inplace */
1439 0x1ffc00, /* src_mask */
1440 0x1ffc00, /* dst_mask */
1441 FALSE
), /* pcrel_offset */
1443 /* Same as BFD_RELOC_AARCH64_TLSLD_LDST16_DTPREL_LO12, but no overflow check. */
1444 HOWTO64 (AARCH64_R (TLSLD_LDST16_DTPREL_LO12_NC
), /* type */
1446 2, /* size (0 = byte, 1 = short, 2 = long) */
1448 FALSE
, /* pc_relative */
1450 complain_overflow_dont
, /* complain_on_overflow */
1451 bfd_elf_generic_reloc
, /* special_function */
1452 AARCH64_R_STR (TLSLD_LDST16_DTPREL_LO12_NC
), /* name */
1453 FALSE
, /* partial_inplace */
1454 0x1ffc00, /* src_mask */
1455 0x1ffc00, /* dst_mask */
1456 FALSE
), /* pcrel_offset */
1458 /* LD/ST32: bit[11:2] of byte offset to module TLS base address. */
1459 HOWTO64 (AARCH64_R (TLSLD_LDST32_DTPREL_LO12
), /* type */
1461 2, /* size (0 = byte, 1 = short, 2 = long) */
1463 FALSE
, /* pc_relative */
1465 complain_overflow_unsigned
, /* complain_on_overflow */
1466 bfd_elf_generic_reloc
, /* special_function */
1467 AARCH64_R_STR (TLSLD_LDST32_DTPREL_LO12
), /* name */
1468 FALSE
, /* partial_inplace */
1469 0x3ffc00, /* src_mask */
1470 0x3ffc00, /* dst_mask */
1471 FALSE
), /* pcrel_offset */
1473 /* Same as BFD_RELOC_AARCH64_TLSLD_LDST32_DTPREL_LO12, but no overflow check. */
1474 HOWTO64 (AARCH64_R (TLSLD_LDST32_DTPREL_LO12_NC
), /* type */
1476 2, /* size (0 = byte, 1 = short, 2 = long) */
1478 FALSE
, /* pc_relative */
1480 complain_overflow_dont
, /* complain_on_overflow */
1481 bfd_elf_generic_reloc
, /* special_function */
1482 AARCH64_R_STR (TLSLD_LDST32_DTPREL_LO12_NC
), /* name */
1483 FALSE
, /* partial_inplace */
1484 0xffc00, /* src_mask */
1485 0xffc00, /* dst_mask */
1486 FALSE
), /* pcrel_offset */
1488 /* LD/ST64: bit[11:3] of byte offset to module TLS base address. */
1489 HOWTO64 (AARCH64_R (TLSLD_LDST64_DTPREL_LO12
), /* type */
1491 2, /* size (0 = byte, 1 = short, 2 = long) */
1493 FALSE
, /* pc_relative */
1495 complain_overflow_unsigned
, /* complain_on_overflow */
1496 bfd_elf_generic_reloc
, /* special_function */
1497 AARCH64_R_STR (TLSLD_LDST64_DTPREL_LO12
), /* name */
1498 FALSE
, /* partial_inplace */
1499 0x3ffc00, /* src_mask */
1500 0x3ffc00, /* dst_mask */
1501 FALSE
), /* pcrel_offset */
1503 /* Same as BFD_RELOC_AARCH64_TLSLD_LDST64_DTPREL_LO12, but no overflow check. */
1504 HOWTO64 (AARCH64_R (TLSLD_LDST64_DTPREL_LO12_NC
), /* type */
1506 2, /* size (0 = byte, 1 = short, 2 = long) */
1508 FALSE
, /* pc_relative */
1510 complain_overflow_dont
, /* complain_on_overflow */
1511 bfd_elf_generic_reloc
, /* special_function */
1512 AARCH64_R_STR (TLSLD_LDST64_DTPREL_LO12_NC
), /* name */
1513 FALSE
, /* partial_inplace */
1514 0x7fc00, /* src_mask */
1515 0x7fc00, /* dst_mask */
1516 FALSE
), /* pcrel_offset */
1518 /* LD/ST8: bit[11:0] of byte offset to module TLS base address. */
1519 HOWTO64 (AARCH64_R (TLSLD_LDST8_DTPREL_LO12
), /* type */
1521 2, /* size (0 = byte, 1 = short, 2 = long) */
1523 FALSE
, /* pc_relative */
1525 complain_overflow_unsigned
, /* complain_on_overflow */
1526 bfd_elf_generic_reloc
, /* special_function */
1527 AARCH64_R_STR (TLSLD_LDST8_DTPREL_LO12
), /* name */
1528 FALSE
, /* partial_inplace */
1529 0x3ffc00, /* src_mask */
1530 0x3ffc00, /* dst_mask */
1531 FALSE
), /* pcrel_offset */
1533 /* Same as BFD_RELOC_AARCH64_TLSLD_LDST8_DTPREL_LO12, but no overflow check. */
1534 HOWTO64 (AARCH64_R (TLSLD_LDST8_DTPREL_LO12_NC
), /* type */
1536 2, /* size (0 = byte, 1 = short, 2 = long) */
1538 FALSE
, /* pc_relative */
1540 complain_overflow_dont
, /* complain_on_overflow */
1541 bfd_elf_generic_reloc
, /* special_function */
1542 AARCH64_R_STR (TLSLD_LDST8_DTPREL_LO12_NC
), /* name */
1543 FALSE
, /* partial_inplace */
1544 0x3ffc00, /* src_mask */
1545 0x3ffc00, /* dst_mask */
1546 FALSE
), /* pcrel_offset */
1548 /* MOVZ: bit[15:0] of byte offset to module TLS base address. */
1549 HOWTO (AARCH64_R (TLSLD_MOVW_DTPREL_G0
), /* type */
1551 2, /* size (0 = byte, 1 = short, 2 = long) */
1553 FALSE
, /* pc_relative */
1555 complain_overflow_unsigned
, /* complain_on_overflow */
1556 bfd_elf_generic_reloc
, /* special_function */
1557 AARCH64_R_STR (TLSLD_MOVW_DTPREL_G0
), /* name */
1558 FALSE
, /* partial_inplace */
1559 0xffff, /* src_mask */
1560 0xffff, /* dst_mask */
1561 FALSE
), /* pcrel_offset */
1563 /* No overflow check version of BFD_RELOC_AARCH64_TLSLD_MOVW_DTPREL_G0. */
1564 HOWTO (AARCH64_R (TLSLD_MOVW_DTPREL_G0_NC
), /* type */
1566 2, /* size (0 = byte, 1 = short, 2 = long) */
1568 FALSE
, /* pc_relative */
1570 complain_overflow_dont
, /* complain_on_overflow */
1571 bfd_elf_generic_reloc
, /* special_function */
1572 AARCH64_R_STR (TLSLD_MOVW_DTPREL_G0_NC
), /* name */
1573 FALSE
, /* partial_inplace */
1574 0xffff, /* src_mask */
1575 0xffff, /* dst_mask */
1576 FALSE
), /* pcrel_offset */
1578 /* MOVZ: bit[31:16] of byte offset to module TLS base address. */
1579 HOWTO (AARCH64_R (TLSLD_MOVW_DTPREL_G1
), /* type */
1580 16, /* rightshift */
1581 2, /* size (0 = byte, 1 = short, 2 = long) */
1583 FALSE
, /* pc_relative */
1585 complain_overflow_unsigned
, /* complain_on_overflow */
1586 bfd_elf_generic_reloc
, /* special_function */
1587 AARCH64_R_STR (TLSLD_MOVW_DTPREL_G1
), /* name */
1588 FALSE
, /* partial_inplace */
1589 0xffff, /* src_mask */
1590 0xffff, /* dst_mask */
1591 FALSE
), /* pcrel_offset */
1593 /* No overflow check version of BFD_RELOC_AARCH64_TLSLD_MOVW_DTPREL_G1. */
1594 HOWTO64 (AARCH64_R (TLSLD_MOVW_DTPREL_G1_NC
), /* type */
1595 16, /* rightshift */
1596 2, /* size (0 = byte, 1 = short, 2 = long) */
1598 FALSE
, /* pc_relative */
1600 complain_overflow_dont
, /* complain_on_overflow */
1601 bfd_elf_generic_reloc
, /* special_function */
1602 AARCH64_R_STR (TLSLD_MOVW_DTPREL_G1_NC
), /* name */
1603 FALSE
, /* partial_inplace */
1604 0xffff, /* src_mask */
1605 0xffff, /* dst_mask */
1606 FALSE
), /* pcrel_offset */
1608 /* MOVZ: bit[47:32] of byte offset to module TLS base address. */
1609 HOWTO64 (AARCH64_R (TLSLD_MOVW_DTPREL_G2
), /* type */
1610 32, /* rightshift */
1611 2, /* size (0 = byte, 1 = short, 2 = long) */
1613 FALSE
, /* pc_relative */
1615 complain_overflow_unsigned
, /* complain_on_overflow */
1616 bfd_elf_generic_reloc
, /* special_function */
1617 AARCH64_R_STR (TLSLD_MOVW_DTPREL_G2
), /* name */
1618 FALSE
, /* partial_inplace */
1619 0xffff, /* src_mask */
1620 0xffff, /* dst_mask */
1621 FALSE
), /* pcrel_offset */
1623 HOWTO64 (AARCH64_R (TLSLE_MOVW_TPREL_G2
), /* type */
1624 32, /* rightshift */
1625 2, /* size (0 = byte, 1 = short, 2 = long) */
1627 FALSE
, /* pc_relative */
1629 complain_overflow_unsigned
, /* complain_on_overflow */
1630 bfd_elf_generic_reloc
, /* special_function */
1631 AARCH64_R_STR (TLSLE_MOVW_TPREL_G2
), /* name */
1632 FALSE
, /* partial_inplace */
1633 0xffff, /* src_mask */
1634 0xffff, /* dst_mask */
1635 FALSE
), /* pcrel_offset */
1637 HOWTO (AARCH64_R (TLSLE_MOVW_TPREL_G1
), /* type */
1638 16, /* rightshift */
1639 2, /* size (0 = byte, 1 = short, 2 = long) */
1641 FALSE
, /* pc_relative */
1643 complain_overflow_dont
, /* complain_on_overflow */
1644 bfd_elf_generic_reloc
, /* special_function */
1645 AARCH64_R_STR (TLSLE_MOVW_TPREL_G1
), /* name */
1646 FALSE
, /* partial_inplace */
1647 0xffff, /* src_mask */
1648 0xffff, /* dst_mask */
1649 FALSE
), /* pcrel_offset */
1651 HOWTO64 (AARCH64_R (TLSLE_MOVW_TPREL_G1_NC
), /* type */
1652 16, /* rightshift */
1653 2, /* size (0 = byte, 1 = short, 2 = long) */
1655 FALSE
, /* pc_relative */
1657 complain_overflow_dont
, /* complain_on_overflow */
1658 bfd_elf_generic_reloc
, /* special_function */
1659 AARCH64_R_STR (TLSLE_MOVW_TPREL_G1_NC
), /* name */
1660 FALSE
, /* partial_inplace */
1661 0xffff, /* src_mask */
1662 0xffff, /* dst_mask */
1663 FALSE
), /* pcrel_offset */
1665 HOWTO (AARCH64_R (TLSLE_MOVW_TPREL_G0
), /* type */
1667 2, /* size (0 = byte, 1 = short, 2 = long) */
1669 FALSE
, /* pc_relative */
1671 complain_overflow_dont
, /* complain_on_overflow */
1672 bfd_elf_generic_reloc
, /* special_function */
1673 AARCH64_R_STR (TLSLE_MOVW_TPREL_G0
), /* name */
1674 FALSE
, /* partial_inplace */
1675 0xffff, /* src_mask */
1676 0xffff, /* dst_mask */
1677 FALSE
), /* pcrel_offset */
1679 HOWTO (AARCH64_R (TLSLE_MOVW_TPREL_G0_NC
), /* type */
1681 2, /* size (0 = byte, 1 = short, 2 = long) */
1683 FALSE
, /* pc_relative */
1685 complain_overflow_dont
, /* complain_on_overflow */
1686 bfd_elf_generic_reloc
, /* special_function */
1687 AARCH64_R_STR (TLSLE_MOVW_TPREL_G0_NC
), /* name */
1688 FALSE
, /* partial_inplace */
1689 0xffff, /* src_mask */
1690 0xffff, /* dst_mask */
1691 FALSE
), /* pcrel_offset */
1693 HOWTO (AARCH64_R (TLSLE_ADD_TPREL_HI12
), /* type */
1694 12, /* rightshift */
1695 2, /* size (0 = byte, 1 = short, 2 = long) */
1697 FALSE
, /* pc_relative */
1699 complain_overflow_unsigned
, /* complain_on_overflow */
1700 bfd_elf_generic_reloc
, /* special_function */
1701 AARCH64_R_STR (TLSLE_ADD_TPREL_HI12
), /* name */
1702 FALSE
, /* partial_inplace */
1703 0xfff, /* src_mask */
1704 0xfff, /* dst_mask */
1705 FALSE
), /* pcrel_offset */
1707 HOWTO (AARCH64_R (TLSLE_ADD_TPREL_LO12
), /* type */
1709 2, /* size (0 = byte, 1 = short, 2 = long) */
1711 FALSE
, /* pc_relative */
1713 complain_overflow_unsigned
, /* complain_on_overflow */
1714 bfd_elf_generic_reloc
, /* special_function */
1715 AARCH64_R_STR (TLSLE_ADD_TPREL_LO12
), /* name */
1716 FALSE
, /* partial_inplace */
1717 0xfff, /* src_mask */
1718 0xfff, /* dst_mask */
1719 FALSE
), /* pcrel_offset */
1721 HOWTO (AARCH64_R (TLSLE_ADD_TPREL_LO12_NC
), /* type */
1723 2, /* size (0 = byte, 1 = short, 2 = long) */
1725 FALSE
, /* pc_relative */
1727 complain_overflow_dont
, /* complain_on_overflow */
1728 bfd_elf_generic_reloc
, /* special_function */
1729 AARCH64_R_STR (TLSLE_ADD_TPREL_LO12_NC
), /* name */
1730 FALSE
, /* partial_inplace */
1731 0xfff, /* src_mask */
1732 0xfff, /* dst_mask */
1733 FALSE
), /* pcrel_offset */
1735 /* LD/ST16: bit[11:1] of byte offset to module TLS base address. */
1736 HOWTO (AARCH64_R (TLSLE_LDST16_TPREL_LO12
), /* type */
1738 2, /* size (0 = byte, 1 = short, 2 = long) */
1740 FALSE
, /* pc_relative */
1742 complain_overflow_unsigned
, /* complain_on_overflow */
1743 bfd_elf_generic_reloc
, /* special_function */
1744 AARCH64_R_STR (TLSLE_LDST16_TPREL_LO12
), /* name */
1745 FALSE
, /* partial_inplace */
1746 0x1ffc00, /* src_mask */
1747 0x1ffc00, /* dst_mask */
1748 FALSE
), /* pcrel_offset */
1750 /* Same as BFD_RELOC_AARCH64_TLSLE_LDST16_TPREL_LO12, but no overflow check. */
1751 HOWTO (AARCH64_R (TLSLE_LDST16_TPREL_LO12_NC
), /* type */
1753 2, /* size (0 = byte, 1 = short, 2 = long) */
1755 FALSE
, /* pc_relative */
1757 complain_overflow_dont
, /* complain_on_overflow */
1758 bfd_elf_generic_reloc
, /* special_function */
1759 AARCH64_R_STR (TLSLE_LDST16_TPREL_LO12_NC
), /* name */
1760 FALSE
, /* partial_inplace */
1761 0x1ffc00, /* src_mask */
1762 0x1ffc00, /* dst_mask */
1763 FALSE
), /* pcrel_offset */
1765 /* LD/ST32: bit[11:2] of byte offset to module TLS base address. */
1766 HOWTO (AARCH64_R (TLSLE_LDST32_TPREL_LO12
), /* type */
1768 2, /* size (0 = byte, 1 = short, 2 = long) */
1770 FALSE
, /* pc_relative */
1772 complain_overflow_unsigned
, /* complain_on_overflow */
1773 bfd_elf_generic_reloc
, /* special_function */
1774 AARCH64_R_STR (TLSLE_LDST32_TPREL_LO12
), /* name */
1775 FALSE
, /* partial_inplace */
1776 0xffc00, /* src_mask */
1777 0xffc00, /* dst_mask */
1778 FALSE
), /* pcrel_offset */
1780 /* Same as BFD_RELOC_AARCH64_TLSLE_LDST32_TPREL_LO12, but no overflow check. */
1781 HOWTO (AARCH64_R (TLSLE_LDST32_TPREL_LO12_NC
), /* type */
1783 2, /* size (0 = byte, 1 = short, 2 = long) */
1785 FALSE
, /* pc_relative */
1787 complain_overflow_dont
, /* complain_on_overflow */
1788 bfd_elf_generic_reloc
, /* special_function */
1789 AARCH64_R_STR (TLSLE_LDST32_TPREL_LO12_NC
), /* name */
1790 FALSE
, /* partial_inplace */
1791 0xffc00, /* src_mask */
1792 0xffc00, /* dst_mask */
1793 FALSE
), /* pcrel_offset */
1795 /* LD/ST64: bit[11:3] of byte offset to module TLS base address. */
1796 HOWTO (AARCH64_R (TLSLE_LDST64_TPREL_LO12
), /* type */
1798 2, /* size (0 = byte, 1 = short, 2 = long) */
1800 FALSE
, /* pc_relative */
1802 complain_overflow_unsigned
, /* complain_on_overflow */
1803 bfd_elf_generic_reloc
, /* special_function */
1804 AARCH64_R_STR (TLSLE_LDST64_TPREL_LO12
), /* name */
1805 FALSE
, /* partial_inplace */
1806 0x7fc00, /* src_mask */
1807 0x7fc00, /* dst_mask */
1808 FALSE
), /* pcrel_offset */
1810 /* Same as BFD_RELOC_AARCH64_TLSLE_LDST64_TPREL_LO12, but no overflow check. */
1811 HOWTO (AARCH64_R (TLSLE_LDST64_TPREL_LO12_NC
), /* type */
1813 2, /* size (0 = byte, 1 = short, 2 = long) */
1815 FALSE
, /* pc_relative */
1817 complain_overflow_dont
, /* complain_on_overflow */
1818 bfd_elf_generic_reloc
, /* special_function */
1819 AARCH64_R_STR (TLSLE_LDST64_TPREL_LO12_NC
), /* name */
1820 FALSE
, /* partial_inplace */
1821 0x7fc00, /* src_mask */
1822 0x7fc00, /* dst_mask */
1823 FALSE
), /* pcrel_offset */
1825 /* LD/ST8: bit[11:0] of byte offset to module TLS base address. */
1826 HOWTO (AARCH64_R (TLSLE_LDST8_TPREL_LO12
), /* type */
1828 2, /* size (0 = byte, 1 = short, 2 = long) */
1830 FALSE
, /* pc_relative */
1832 complain_overflow_unsigned
, /* complain_on_overflow */
1833 bfd_elf_generic_reloc
, /* special_function */
1834 AARCH64_R_STR (TLSLE_LDST8_TPREL_LO12
), /* name */
1835 FALSE
, /* partial_inplace */
1836 0x3ffc00, /* src_mask */
1837 0x3ffc00, /* dst_mask */
1838 FALSE
), /* pcrel_offset */
1840 /* Same as BFD_RELOC_AARCH64_TLSLE_LDST8_TPREL_LO12, but no overflow check. */
1841 HOWTO (AARCH64_R (TLSLE_LDST8_TPREL_LO12_NC
), /* type */
1843 2, /* size (0 = byte, 1 = short, 2 = long) */
1845 FALSE
, /* pc_relative */
1847 complain_overflow_dont
, /* complain_on_overflow */
1848 bfd_elf_generic_reloc
, /* special_function */
1849 AARCH64_R_STR (TLSLE_LDST8_TPREL_LO12_NC
), /* name */
1850 FALSE
, /* partial_inplace */
1851 0x3ffc00, /* src_mask */
1852 0x3ffc00, /* dst_mask */
1853 FALSE
), /* pcrel_offset */
1855 HOWTO (AARCH64_R (TLSDESC_LD_PREL19
), /* type */
1857 2, /* size (0 = byte, 1 = short, 2 = long) */
1859 TRUE
, /* pc_relative */
1861 complain_overflow_dont
, /* complain_on_overflow */
1862 bfd_elf_generic_reloc
, /* special_function */
1863 AARCH64_R_STR (TLSDESC_LD_PREL19
), /* name */
1864 FALSE
, /* partial_inplace */
1865 0x0ffffe0, /* src_mask */
1866 0x0ffffe0, /* dst_mask */
1867 TRUE
), /* pcrel_offset */
1869 HOWTO (AARCH64_R (TLSDESC_ADR_PREL21
), /* type */
1871 2, /* size (0 = byte, 1 = short, 2 = long) */
1873 TRUE
, /* pc_relative */
1875 complain_overflow_dont
, /* complain_on_overflow */
1876 bfd_elf_generic_reloc
, /* special_function */
1877 AARCH64_R_STR (TLSDESC_ADR_PREL21
), /* name */
1878 FALSE
, /* partial_inplace */
1879 0x1fffff, /* src_mask */
1880 0x1fffff, /* dst_mask */
1881 TRUE
), /* pcrel_offset */
1883 /* Get to the page for the GOT entry for the symbol
1884 (G(S) - P) using an ADRP instruction. */
1885 HOWTO (AARCH64_R (TLSDESC_ADR_PAGE21
), /* type */
1886 12, /* rightshift */
1887 2, /* size (0 = byte, 1 = short, 2 = long) */
1889 TRUE
, /* pc_relative */
1891 complain_overflow_dont
, /* complain_on_overflow */
1892 bfd_elf_generic_reloc
, /* special_function */
1893 AARCH64_R_STR (TLSDESC_ADR_PAGE21
), /* name */
1894 FALSE
, /* partial_inplace */
1895 0x1fffff, /* src_mask */
1896 0x1fffff, /* dst_mask */
1897 TRUE
), /* pcrel_offset */
1899 /* LD64: GOT offset G(S) & 0xff8. */
1900 HOWTO64 (AARCH64_R (TLSDESC_LD64_LO12
), /* type */
1902 2, /* size (0 = byte, 1 = short, 2 = long) */
1904 FALSE
, /* pc_relative */
1906 complain_overflow_dont
, /* complain_on_overflow */
1907 bfd_elf_generic_reloc
, /* special_function */
1908 AARCH64_R_STR (TLSDESC_LD64_LO12
), /* name */
1909 FALSE
, /* partial_inplace */
1910 0xff8, /* src_mask */
1911 0xff8, /* dst_mask */
1912 FALSE
), /* pcrel_offset */
1914 /* LD32: GOT offset G(S) & 0xffc. */
1915 HOWTO32 (AARCH64_R (TLSDESC_LD32_LO12_NC
), /* type */
1917 2, /* size (0 = byte, 1 = short, 2 = long) */
1919 FALSE
, /* pc_relative */
1921 complain_overflow_dont
, /* complain_on_overflow */
1922 bfd_elf_generic_reloc
, /* special_function */
1923 AARCH64_R_STR (TLSDESC_LD32_LO12_NC
), /* name */
1924 FALSE
, /* partial_inplace */
1925 0xffc, /* src_mask */
1926 0xffc, /* dst_mask */
1927 FALSE
), /* pcrel_offset */
1929 /* ADD: GOT offset G(S) & 0xfff. */
1930 HOWTO (AARCH64_R (TLSDESC_ADD_LO12
), /* type */
1932 2, /* size (0 = byte, 1 = short, 2 = long) */
1934 FALSE
, /* pc_relative */
1936 complain_overflow_dont
,/* complain_on_overflow */
1937 bfd_elf_generic_reloc
, /* special_function */
1938 AARCH64_R_STR (TLSDESC_ADD_LO12
), /* name */
1939 FALSE
, /* partial_inplace */
1940 0xfff, /* src_mask */
1941 0xfff, /* dst_mask */
1942 FALSE
), /* pcrel_offset */
1944 HOWTO64 (AARCH64_R (TLSDESC_OFF_G1
), /* type */
1945 16, /* rightshift */
1946 2, /* size (0 = byte, 1 = short, 2 = long) */
1948 FALSE
, /* pc_relative */
1950 complain_overflow_unsigned
, /* complain_on_overflow */
1951 bfd_elf_generic_reloc
, /* special_function */
1952 AARCH64_R_STR (TLSDESC_OFF_G1
), /* name */
1953 FALSE
, /* partial_inplace */
1954 0xffff, /* src_mask */
1955 0xffff, /* dst_mask */
1956 FALSE
), /* pcrel_offset */
1958 HOWTO64 (AARCH64_R (TLSDESC_OFF_G0_NC
), /* type */
1960 2, /* size (0 = byte, 1 = short, 2 = long) */
1962 FALSE
, /* pc_relative */
1964 complain_overflow_dont
, /* complain_on_overflow */
1965 bfd_elf_generic_reloc
, /* special_function */
1966 AARCH64_R_STR (TLSDESC_OFF_G0_NC
), /* name */
1967 FALSE
, /* partial_inplace */
1968 0xffff, /* src_mask */
1969 0xffff, /* dst_mask */
1970 FALSE
), /* pcrel_offset */
1972 HOWTO64 (AARCH64_R (TLSDESC_LDR
), /* type */
1974 2, /* size (0 = byte, 1 = short, 2 = long) */
1976 FALSE
, /* pc_relative */
1978 complain_overflow_dont
, /* complain_on_overflow */
1979 bfd_elf_generic_reloc
, /* special_function */
1980 AARCH64_R_STR (TLSDESC_LDR
), /* name */
1981 FALSE
, /* partial_inplace */
1984 FALSE
), /* pcrel_offset */
1986 HOWTO64 (AARCH64_R (TLSDESC_ADD
), /* type */
1988 2, /* size (0 = byte, 1 = short, 2 = long) */
1990 FALSE
, /* pc_relative */
1992 complain_overflow_dont
, /* complain_on_overflow */
1993 bfd_elf_generic_reloc
, /* special_function */
1994 AARCH64_R_STR (TLSDESC_ADD
), /* name */
1995 FALSE
, /* partial_inplace */
1998 FALSE
), /* pcrel_offset */
2000 HOWTO (AARCH64_R (TLSDESC_CALL
), /* type */
2002 2, /* size (0 = byte, 1 = short, 2 = long) */
2004 FALSE
, /* pc_relative */
2006 complain_overflow_dont
, /* complain_on_overflow */
2007 bfd_elf_generic_reloc
, /* special_function */
2008 AARCH64_R_STR (TLSDESC_CALL
), /* name */
2009 FALSE
, /* partial_inplace */
2012 FALSE
), /* pcrel_offset */
2014 HOWTO (AARCH64_R (COPY
), /* type */
2016 2, /* size (0 = byte, 1 = short, 2 = long) */
2018 FALSE
, /* pc_relative */
2020 complain_overflow_bitfield
, /* complain_on_overflow */
2021 bfd_elf_generic_reloc
, /* special_function */
2022 AARCH64_R_STR (COPY
), /* name */
2023 TRUE
, /* partial_inplace */
2024 0xffffffff, /* src_mask */
2025 0xffffffff, /* dst_mask */
2026 FALSE
), /* pcrel_offset */
2028 HOWTO (AARCH64_R (GLOB_DAT
), /* type */
2030 2, /* size (0 = byte, 1 = short, 2 = long) */
2032 FALSE
, /* pc_relative */
2034 complain_overflow_bitfield
, /* complain_on_overflow */
2035 bfd_elf_generic_reloc
, /* special_function */
2036 AARCH64_R_STR (GLOB_DAT
), /* name */
2037 TRUE
, /* partial_inplace */
2038 0xffffffff, /* src_mask */
2039 0xffffffff, /* dst_mask */
2040 FALSE
), /* pcrel_offset */
2042 HOWTO (AARCH64_R (JUMP_SLOT
), /* type */
2044 2, /* size (0 = byte, 1 = short, 2 = long) */
2046 FALSE
, /* pc_relative */
2048 complain_overflow_bitfield
, /* complain_on_overflow */
2049 bfd_elf_generic_reloc
, /* special_function */
2050 AARCH64_R_STR (JUMP_SLOT
), /* name */
2051 TRUE
, /* partial_inplace */
2052 0xffffffff, /* src_mask */
2053 0xffffffff, /* dst_mask */
2054 FALSE
), /* pcrel_offset */
2056 HOWTO (AARCH64_R (RELATIVE
), /* type */
2058 2, /* size (0 = byte, 1 = short, 2 = long) */
2060 FALSE
, /* pc_relative */
2062 complain_overflow_bitfield
, /* complain_on_overflow */
2063 bfd_elf_generic_reloc
, /* special_function */
2064 AARCH64_R_STR (RELATIVE
), /* name */
2065 TRUE
, /* partial_inplace */
2066 ALL_ONES
, /* src_mask */
2067 ALL_ONES
, /* dst_mask */
2068 FALSE
), /* pcrel_offset */
2070 HOWTO (AARCH64_R (TLS_DTPMOD
), /* type */
2072 2, /* size (0 = byte, 1 = short, 2 = long) */
2074 FALSE
, /* pc_relative */
2076 complain_overflow_dont
, /* complain_on_overflow */
2077 bfd_elf_generic_reloc
, /* special_function */
2079 AARCH64_R_STR (TLS_DTPMOD64
), /* name */
2081 AARCH64_R_STR (TLS_DTPMOD
), /* name */
2083 FALSE
, /* partial_inplace */
2085 ALL_ONES
, /* dst_mask */
2086 FALSE
), /* pc_reloffset */
2088 HOWTO (AARCH64_R (TLS_DTPREL
), /* type */
2090 2, /* size (0 = byte, 1 = short, 2 = long) */
2092 FALSE
, /* pc_relative */
2094 complain_overflow_dont
, /* complain_on_overflow */
2095 bfd_elf_generic_reloc
, /* special_function */
2097 AARCH64_R_STR (TLS_DTPREL64
), /* name */
2099 AARCH64_R_STR (TLS_DTPREL
), /* name */
2101 FALSE
, /* partial_inplace */
2103 ALL_ONES
, /* dst_mask */
2104 FALSE
), /* pcrel_offset */
2106 HOWTO (AARCH64_R (TLS_TPREL
), /* type */
2108 2, /* size (0 = byte, 1 = short, 2 = long) */
2110 FALSE
, /* pc_relative */
2112 complain_overflow_dont
, /* complain_on_overflow */
2113 bfd_elf_generic_reloc
, /* special_function */
2115 AARCH64_R_STR (TLS_TPREL64
), /* name */
2117 AARCH64_R_STR (TLS_TPREL
), /* name */
2119 FALSE
, /* partial_inplace */
2121 ALL_ONES
, /* dst_mask */
2122 FALSE
), /* pcrel_offset */
2124 HOWTO (AARCH64_R (TLSDESC
), /* type */
2126 2, /* size (0 = byte, 1 = short, 2 = long) */
2128 FALSE
, /* pc_relative */
2130 complain_overflow_dont
, /* complain_on_overflow */
2131 bfd_elf_generic_reloc
, /* special_function */
2132 AARCH64_R_STR (TLSDESC
), /* name */
2133 FALSE
, /* partial_inplace */
2135 ALL_ONES
, /* dst_mask */
2136 FALSE
), /* pcrel_offset */
2138 HOWTO (AARCH64_R (IRELATIVE
), /* type */
2140 2, /* size (0 = byte, 1 = short, 2 = long) */
2142 FALSE
, /* pc_relative */
2144 complain_overflow_bitfield
, /* complain_on_overflow */
2145 bfd_elf_generic_reloc
, /* special_function */
2146 AARCH64_R_STR (IRELATIVE
), /* name */
2147 FALSE
, /* partial_inplace */
2149 ALL_ONES
, /* dst_mask */
2150 FALSE
), /* pcrel_offset */
2155 static reloc_howto_type elfNN_aarch64_howto_none
=
2156 HOWTO (R_AARCH64_NONE
, /* type */
2158 3, /* size (0 = byte, 1 = short, 2 = long) */
2160 FALSE
, /* pc_relative */
2162 complain_overflow_dont
,/* complain_on_overflow */
2163 bfd_elf_generic_reloc
, /* special_function */
2164 "R_AARCH64_NONE", /* name */
2165 FALSE
, /* partial_inplace */
2168 FALSE
); /* pcrel_offset */
2170 /* Given HOWTO, return the bfd internal relocation enumerator. */
2172 static bfd_reloc_code_real_type
2173 elfNN_aarch64_bfd_reloc_from_howto (reloc_howto_type
*howto
)
2176 = (int) ARRAY_SIZE (elfNN_aarch64_howto_table
);
2177 const ptrdiff_t offset
2178 = howto
- elfNN_aarch64_howto_table
;
2180 if (offset
> 0 && offset
< size
- 1)
2181 return BFD_RELOC_AARCH64_RELOC_START
+ offset
;
2183 if (howto
== &elfNN_aarch64_howto_none
)
2184 return BFD_RELOC_AARCH64_NONE
;
2186 return BFD_RELOC_AARCH64_RELOC_START
;
2189 /* Given R_TYPE, return the bfd internal relocation enumerator. */
2191 static bfd_reloc_code_real_type
2192 elfNN_aarch64_bfd_reloc_from_type (bfd
*abfd
, unsigned int r_type
)
2194 static bfd_boolean initialized_p
= FALSE
;
2195 /* Indexed by R_TYPE, values are offsets in the howto_table. */
2196 static unsigned int offsets
[R_AARCH64_end
];
2202 for (i
= 1; i
< ARRAY_SIZE (elfNN_aarch64_howto_table
) - 1; ++i
)
2203 if (elfNN_aarch64_howto_table
[i
].type
!= 0)
2204 offsets
[elfNN_aarch64_howto_table
[i
].type
] = i
;
2206 initialized_p
= TRUE
;
2209 if (r_type
== R_AARCH64_NONE
|| r_type
== R_AARCH64_NULL
)
2210 return BFD_RELOC_AARCH64_NONE
;
2212 /* PR 17512: file: b371e70a. */
2213 if (r_type
>= R_AARCH64_end
)
2215 _bfd_error_handler (_("%pB: unsupported relocation type %#x"),
2217 bfd_set_error (bfd_error_bad_value
);
2218 return BFD_RELOC_AARCH64_NONE
;
2221 return BFD_RELOC_AARCH64_RELOC_START
+ offsets
[r_type
];
2224 struct elf_aarch64_reloc_map
2226 bfd_reloc_code_real_type from
;
2227 bfd_reloc_code_real_type to
;
2230 /* Map bfd generic reloc to AArch64-specific reloc. */
2231 static const struct elf_aarch64_reloc_map elf_aarch64_reloc_map
[] =
2233 {BFD_RELOC_NONE
, BFD_RELOC_AARCH64_NONE
},
2235 /* Basic data relocations. */
2236 {BFD_RELOC_CTOR
, BFD_RELOC_AARCH64_NN
},
2237 {BFD_RELOC_64
, BFD_RELOC_AARCH64_64
},
2238 {BFD_RELOC_32
, BFD_RELOC_AARCH64_32
},
2239 {BFD_RELOC_16
, BFD_RELOC_AARCH64_16
},
2240 {BFD_RELOC_64_PCREL
, BFD_RELOC_AARCH64_64_PCREL
},
2241 {BFD_RELOC_32_PCREL
, BFD_RELOC_AARCH64_32_PCREL
},
2242 {BFD_RELOC_16_PCREL
, BFD_RELOC_AARCH64_16_PCREL
},
2245 /* Given the bfd internal relocation enumerator in CODE, return the
2246 corresponding howto entry. */
2248 static reloc_howto_type
*
2249 elfNN_aarch64_howto_from_bfd_reloc (bfd_reloc_code_real_type code
)
2253 /* Convert bfd generic reloc to AArch64-specific reloc. */
2254 if (code
< BFD_RELOC_AARCH64_RELOC_START
2255 || code
> BFD_RELOC_AARCH64_RELOC_END
)
2256 for (i
= 0; i
< ARRAY_SIZE (elf_aarch64_reloc_map
); i
++)
2257 if (elf_aarch64_reloc_map
[i
].from
== code
)
2259 code
= elf_aarch64_reloc_map
[i
].to
;
2263 if (code
> BFD_RELOC_AARCH64_RELOC_START
2264 && code
< BFD_RELOC_AARCH64_RELOC_END
)
2265 if (elfNN_aarch64_howto_table
[code
- BFD_RELOC_AARCH64_RELOC_START
].type
)
2266 return &elfNN_aarch64_howto_table
[code
- BFD_RELOC_AARCH64_RELOC_START
];
2268 if (code
== BFD_RELOC_AARCH64_NONE
)
2269 return &elfNN_aarch64_howto_none
;
2274 static reloc_howto_type
*
2275 elfNN_aarch64_howto_from_type (bfd
*abfd
, unsigned int r_type
)
2277 bfd_reloc_code_real_type val
;
2278 reloc_howto_type
*howto
;
2283 bfd_set_error (bfd_error_bad_value
);
2288 if (r_type
== R_AARCH64_NONE
)
2289 return &elfNN_aarch64_howto_none
;
2291 val
= elfNN_aarch64_bfd_reloc_from_type (abfd
, r_type
);
2292 howto
= elfNN_aarch64_howto_from_bfd_reloc (val
);
2297 bfd_set_error (bfd_error_bad_value
);
2302 elfNN_aarch64_info_to_howto (bfd
*abfd
, arelent
*bfd_reloc
,
2303 Elf_Internal_Rela
*elf_reloc
)
2305 unsigned int r_type
;
2307 r_type
= ELFNN_R_TYPE (elf_reloc
->r_info
);
2308 bfd_reloc
->howto
= elfNN_aarch64_howto_from_type (abfd
, r_type
);
2310 if (bfd_reloc
->howto
== NULL
)
2312 /* xgettext:c-format */
2313 _bfd_error_handler (_("%pB: unsupported relocation type %#x"), abfd
, r_type
);
2319 static reloc_howto_type
*
2320 elfNN_aarch64_reloc_type_lookup (bfd
*abfd ATTRIBUTE_UNUSED
,
2321 bfd_reloc_code_real_type code
)
2323 reloc_howto_type
*howto
= elfNN_aarch64_howto_from_bfd_reloc (code
);
2328 bfd_set_error (bfd_error_bad_value
);
2332 static reloc_howto_type
*
2333 elfNN_aarch64_reloc_name_lookup (bfd
*abfd ATTRIBUTE_UNUSED
,
2338 for (i
= 1; i
< ARRAY_SIZE (elfNN_aarch64_howto_table
) - 1; ++i
)
2339 if (elfNN_aarch64_howto_table
[i
].name
!= NULL
2340 && strcasecmp (elfNN_aarch64_howto_table
[i
].name
, r_name
) == 0)
2341 return &elfNN_aarch64_howto_table
[i
];
2346 #define TARGET_LITTLE_SYM aarch64_elfNN_le_vec
2347 #define TARGET_LITTLE_NAME "elfNN-littleaarch64"
2348 #define TARGET_BIG_SYM aarch64_elfNN_be_vec
2349 #define TARGET_BIG_NAME "elfNN-bigaarch64"
2351 /* The linker script knows the section names for placement.
2352 The entry_names are used to do simple name mangling on the stubs.
2353 Given a function name, and its type, the stub can be found. The
2354 name can be changed. The only requirement is the %s be present. */
2355 #define STUB_ENTRY_NAME "__%s_veneer"
2357 /* The name of the dynamic interpreter. This is put in the .interp
2359 #define ELF_DYNAMIC_INTERPRETER "/lib/ld.so.1"
2361 #define AARCH64_MAX_FWD_BRANCH_OFFSET \
2362 (((1 << 25) - 1) << 2)
2363 #define AARCH64_MAX_BWD_BRANCH_OFFSET \
2366 #define AARCH64_MAX_ADRP_IMM ((1 << 20) - 1)
2367 #define AARCH64_MIN_ADRP_IMM (-(1 << 20))
2370 aarch64_valid_for_adrp_p (bfd_vma value
, bfd_vma place
)
2372 bfd_signed_vma offset
= (bfd_signed_vma
) (PG (value
) - PG (place
)) >> 12;
2373 return offset
<= AARCH64_MAX_ADRP_IMM
&& offset
>= AARCH64_MIN_ADRP_IMM
;
2377 aarch64_valid_branch_p (bfd_vma value
, bfd_vma place
)
2379 bfd_signed_vma offset
= (bfd_signed_vma
) (value
- place
);
2380 return (offset
<= AARCH64_MAX_FWD_BRANCH_OFFSET
2381 && offset
>= AARCH64_MAX_BWD_BRANCH_OFFSET
);
2384 static const uint32_t aarch64_adrp_branch_stub
[] =
2386 0x90000010, /* adrp ip0, X */
2387 /* R_AARCH64_ADR_HI21_PCREL(X) */
2388 0x91000210, /* add ip0, ip0, :lo12:X */
2389 /* R_AARCH64_ADD_ABS_LO12_NC(X) */
2390 0xd61f0200, /* br ip0 */
2393 static const uint32_t aarch64_long_branch_stub
[] =
2396 0x58000090, /* ldr ip0, 1f */
2398 0x18000090, /* ldr wip0, 1f */
2400 0x10000011, /* adr ip1, #0 */
2401 0x8b110210, /* add ip0, ip0, ip1 */
2402 0xd61f0200, /* br ip0 */
2403 0x00000000, /* 1: .xword or .word
2404 R_AARCH64_PRELNN(X) + 12
2409 static const uint32_t aarch64_erratum_835769_stub
[] =
2411 0x00000000, /* Placeholder for multiply accumulate. */
2412 0x14000000, /* b <label> */
2415 static const uint32_t aarch64_erratum_843419_stub
[] =
2417 0x00000000, /* Placeholder for LDR instruction. */
2418 0x14000000, /* b <label> */
2421 /* Section name for stubs is the associated section name plus this
2423 #define STUB_SUFFIX ".stub"
2425 enum elf_aarch64_stub_type
2428 aarch64_stub_adrp_branch
,
2429 aarch64_stub_long_branch
,
2430 aarch64_stub_erratum_835769_veneer
,
2431 aarch64_stub_erratum_843419_veneer
,
2434 struct elf_aarch64_stub_hash_entry
2436 /* Base hash table entry structure. */
2437 struct bfd_hash_entry root
;
2439 /* The stub section. */
2442 /* Offset within stub_sec of the beginning of this stub. */
2443 bfd_vma stub_offset
;
2445 /* Given the symbol's value and its section we can determine its final
2446 value when building the stubs (so the stub knows where to jump). */
2447 bfd_vma target_value
;
2448 asection
*target_section
;
2450 enum elf_aarch64_stub_type stub_type
;
2452 /* The symbol table entry, if any, that this was derived from. */
2453 struct elf_aarch64_link_hash_entry
*h
;
2455 /* Destination symbol type */
2456 unsigned char st_type
;
2458 /* Where this stub is being called from, or, in the case of combined
2459 stub sections, the first input section in the group. */
2462 /* The name for the local symbol at the start of this stub. The
2463 stub name in the hash table has to be unique; this does not, so
2464 it can be friendlier. */
2467 /* The instruction which caused this stub to be generated (only valid for
2468 erratum 835769 workaround stubs at present). */
2469 uint32_t veneered_insn
;
2471 /* In an erratum 843419 workaround stub, the ADRP instruction offset. */
2472 bfd_vma adrp_offset
;
2475 /* Used to build a map of a section. This is required for mixed-endian
2478 typedef struct elf_elf_section_map
2483 elf_aarch64_section_map
;
2486 typedef struct _aarch64_elf_section_data
2488 struct bfd_elf_section_data elf
;
2489 unsigned int mapcount
;
2490 unsigned int mapsize
;
2491 elf_aarch64_section_map
*map
;
2493 _aarch64_elf_section_data
;
2495 #define elf_aarch64_section_data(sec) \
2496 ((_aarch64_elf_section_data *) elf_section_data (sec))
2498 /* The size of the thread control block which is defined to be two pointers. */
2499 #define TCB_SIZE (ARCH_SIZE/8)*2
2501 struct elf_aarch64_local_symbol
2503 unsigned int got_type
;
2504 bfd_signed_vma got_refcount
;
2507 /* Offset of the GOTPLT entry reserved for the TLS descriptor. The
2508 offset is from the end of the jump table and reserved entries
2511 The magic value (bfd_vma) -1 indicates that an offset has not be
2513 bfd_vma tlsdesc_got_jump_table_offset
;
2516 struct elf_aarch64_obj_tdata
2518 struct elf_obj_tdata root
;
2520 /* local symbol descriptors */
2521 struct elf_aarch64_local_symbol
*locals
;
2523 /* Zero to warn when linking objects with incompatible enum sizes. */
2524 int no_enum_size_warning
;
2526 /* Zero to warn when linking objects with incompatible wchar_t sizes. */
2527 int no_wchar_size_warning
;
2529 /* All GNU_PROPERTY_AARCH64_FEATURE_1_AND properties. */
2530 uint32_t gnu_and_prop
;
2532 /* Zero to warn when linking objects with incompatible
2533 GNU_PROPERTY_AARCH64_FEATURE_1_BTI. */
2536 /* PLT type based on security. */
2537 aarch64_plt_type plt_type
;
2540 #define elf_aarch64_tdata(bfd) \
2541 ((struct elf_aarch64_obj_tdata *) (bfd)->tdata.any)
2543 #define elf_aarch64_locals(bfd) (elf_aarch64_tdata (bfd)->locals)
2545 #define is_aarch64_elf(bfd) \
2546 (bfd_get_flavour (bfd) == bfd_target_elf_flavour \
2547 && elf_tdata (bfd) != NULL \
2548 && elf_object_id (bfd) == AARCH64_ELF_DATA)
2551 elfNN_aarch64_mkobject (bfd
*abfd
)
2553 return bfd_elf_allocate_object (abfd
, sizeof (struct elf_aarch64_obj_tdata
),
2557 #define elf_aarch64_hash_entry(ent) \
2558 ((struct elf_aarch64_link_hash_entry *)(ent))
2560 #define GOT_UNKNOWN 0
2561 #define GOT_NORMAL 1
2562 #define GOT_TLS_GD 2
2563 #define GOT_TLS_IE 4
2564 #define GOT_TLSDESC_GD 8
2566 #define GOT_TLS_GD_ANY_P(type) ((type & GOT_TLS_GD) || (type & GOT_TLSDESC_GD))
2568 /* AArch64 ELF linker hash entry. */
2569 struct elf_aarch64_link_hash_entry
2571 struct elf_link_hash_entry root
;
2573 /* Track dynamic relocs copied for this symbol. */
2574 struct elf_dyn_relocs
*dyn_relocs
;
2576 /* Since PLT entries have variable size, we need to record the
2577 index into .got.plt instead of recomputing it from the PLT
2579 bfd_signed_vma plt_got_offset
;
2581 /* Bit mask representing the type of GOT entry(s) if any required by
2583 unsigned int got_type
;
2585 /* A pointer to the most recently used stub hash entry against this
2587 struct elf_aarch64_stub_hash_entry
*stub_cache
;
2589 /* Offset of the GOTPLT entry reserved for the TLS descriptor. The offset
2590 is from the end of the jump table and reserved entries within the PLTGOT.
2592 The magic value (bfd_vma) -1 indicates that an offset has not
2594 bfd_vma tlsdesc_got_jump_table_offset
;
2598 elfNN_aarch64_symbol_got_type (struct elf_link_hash_entry
*h
,
2600 unsigned long r_symndx
)
2603 return elf_aarch64_hash_entry (h
)->got_type
;
2605 if (! elf_aarch64_locals (abfd
))
2608 return elf_aarch64_locals (abfd
)[r_symndx
].got_type
;
2611 /* Get the AArch64 elf linker hash table from a link_info structure. */
2612 #define elf_aarch64_hash_table(info) \
2613 ((struct elf_aarch64_link_hash_table *) ((info)->hash))
2615 #define aarch64_stub_hash_lookup(table, string, create, copy) \
2616 ((struct elf_aarch64_stub_hash_entry *) \
2617 bfd_hash_lookup ((table), (string), (create), (copy)))
2619 /* AArch64 ELF linker hash table. */
2620 struct elf_aarch64_link_hash_table
2622 /* The main hash table. */
2623 struct elf_link_hash_table root
;
2625 /* Nonzero to force PIC branch veneers. */
2628 /* Fix erratum 835769. */
2629 int fix_erratum_835769
;
2631 /* Fix erratum 843419. */
2632 erratum_84319_opts fix_erratum_843419
;
2634 /* Don't apply link-time values for dynamic relocations. */
2635 int no_apply_dynamic_relocs
;
2637 /* The number of bytes in the initial entry in the PLT. */
2638 bfd_size_type plt_header_size
;
2640 /* The bytes of the initial PLT entry. */
2641 const bfd_byte
*plt0_entry
;
2643 /* The number of bytes in the subsequent PLT entries. */
2644 bfd_size_type plt_entry_size
;
2646 /* The bytes of the subsequent PLT entry. */
2647 const bfd_byte
*plt_entry
;
2649 /* Small local sym cache. */
2650 struct sym_cache sym_cache
;
2652 /* For convenience in allocate_dynrelocs. */
2655 /* The amount of space used by the reserved portion of the sgotplt
2656 section, plus whatever space is used by the jump slots. */
2657 bfd_vma sgotplt_jump_table_size
;
2659 /* The stub hash table. */
2660 struct bfd_hash_table stub_hash_table
;
2662 /* Linker stub bfd. */
2665 /* Linker call-backs. */
2666 asection
*(*add_stub_section
) (const char *, asection
*);
2667 void (*layout_sections_again
) (void);
2669 /* Array to keep track of which stub sections have been created, and
2670 information on stub grouping. */
2673 /* This is the section to which stubs in the group will be
2676 /* The stub section. */
2680 /* Assorted information used by elfNN_aarch64_size_stubs. */
2681 unsigned int bfd_count
;
2682 unsigned int top_index
;
2683 asection
**input_list
;
2685 /* JUMP_SLOT relocs for variant PCS symbols may be present. */
2688 /* The offset into splt of the PLT entry for the TLS descriptor
2689 resolver. Special values are 0, if not necessary (or not found
2690 to be necessary yet), and -1 if needed but not determined
2692 bfd_vma tlsdesc_plt
;
2694 /* The number of bytes in the PLT enty for the TLS descriptor. */
2695 bfd_size_type tlsdesc_plt_entry_size
;
2697 /* The GOT offset for the lazy trampoline. Communicated to the
2698 loader via DT_TLSDESC_GOT. The magic value (bfd_vma) -1
2699 indicates an offset is not allocated. */
2700 bfd_vma dt_tlsdesc_got
;
2702 /* Used by local STT_GNU_IFUNC symbols. */
2703 htab_t loc_hash_table
;
2704 void * loc_hash_memory
;
2707 /* Create an entry in an AArch64 ELF linker hash table. */
2709 static struct bfd_hash_entry
*
2710 elfNN_aarch64_link_hash_newfunc (struct bfd_hash_entry
*entry
,
2711 struct bfd_hash_table
*table
,
2714 struct elf_aarch64_link_hash_entry
*ret
=
2715 (struct elf_aarch64_link_hash_entry
*) entry
;
2717 /* Allocate the structure if it has not already been allocated by a
2720 ret
= bfd_hash_allocate (table
,
2721 sizeof (struct elf_aarch64_link_hash_entry
));
2723 return (struct bfd_hash_entry
*) ret
;
2725 /* Call the allocation method of the superclass. */
2726 ret
= ((struct elf_aarch64_link_hash_entry
*)
2727 _bfd_elf_link_hash_newfunc ((struct bfd_hash_entry
*) ret
,
2731 ret
->dyn_relocs
= NULL
;
2732 ret
->got_type
= GOT_UNKNOWN
;
2733 ret
->plt_got_offset
= (bfd_vma
) - 1;
2734 ret
->stub_cache
= NULL
;
2735 ret
->tlsdesc_got_jump_table_offset
= (bfd_vma
) - 1;
2738 return (struct bfd_hash_entry
*) ret
;
2741 /* Initialize an entry in the stub hash table. */
2743 static struct bfd_hash_entry
*
2744 stub_hash_newfunc (struct bfd_hash_entry
*entry
,
2745 struct bfd_hash_table
*table
, const char *string
)
2747 /* Allocate the structure if it has not already been allocated by a
2751 entry
= bfd_hash_allocate (table
,
2753 elf_aarch64_stub_hash_entry
));
2758 /* Call the allocation method of the superclass. */
2759 entry
= bfd_hash_newfunc (entry
, table
, string
);
2762 struct elf_aarch64_stub_hash_entry
*eh
;
2764 /* Initialize the local fields. */
2765 eh
= (struct elf_aarch64_stub_hash_entry
*) entry
;
2766 eh
->adrp_offset
= 0;
2767 eh
->stub_sec
= NULL
;
2768 eh
->stub_offset
= 0;
2769 eh
->target_value
= 0;
2770 eh
->target_section
= NULL
;
2771 eh
->stub_type
= aarch64_stub_none
;
2779 /* Compute a hash of a local hash entry. We use elf_link_hash_entry
2780 for local symbol so that we can handle local STT_GNU_IFUNC symbols
2781 as global symbol. We reuse indx and dynstr_index for local symbol
2782 hash since they aren't used by global symbols in this backend. */
2785 elfNN_aarch64_local_htab_hash (const void *ptr
)
2787 struct elf_link_hash_entry
*h
2788 = (struct elf_link_hash_entry
*) ptr
;
2789 return ELF_LOCAL_SYMBOL_HASH (h
->indx
, h
->dynstr_index
);
2792 /* Compare local hash entries. */
2795 elfNN_aarch64_local_htab_eq (const void *ptr1
, const void *ptr2
)
2797 struct elf_link_hash_entry
*h1
2798 = (struct elf_link_hash_entry
*) ptr1
;
2799 struct elf_link_hash_entry
*h2
2800 = (struct elf_link_hash_entry
*) ptr2
;
2802 return h1
->indx
== h2
->indx
&& h1
->dynstr_index
== h2
->dynstr_index
;
2805 /* Find and/or create a hash entry for local symbol. */
2807 static struct elf_link_hash_entry
*
2808 elfNN_aarch64_get_local_sym_hash (struct elf_aarch64_link_hash_table
*htab
,
2809 bfd
*abfd
, const Elf_Internal_Rela
*rel
,
2812 struct elf_aarch64_link_hash_entry e
, *ret
;
2813 asection
*sec
= abfd
->sections
;
2814 hashval_t h
= ELF_LOCAL_SYMBOL_HASH (sec
->id
,
2815 ELFNN_R_SYM (rel
->r_info
));
2818 e
.root
.indx
= sec
->id
;
2819 e
.root
.dynstr_index
= ELFNN_R_SYM (rel
->r_info
);
2820 slot
= htab_find_slot_with_hash (htab
->loc_hash_table
, &e
, h
,
2821 create
? INSERT
: NO_INSERT
);
2828 ret
= (struct elf_aarch64_link_hash_entry
*) *slot
;
2832 ret
= (struct elf_aarch64_link_hash_entry
*)
2833 objalloc_alloc ((struct objalloc
*) htab
->loc_hash_memory
,
2834 sizeof (struct elf_aarch64_link_hash_entry
));
2837 memset (ret
, 0, sizeof (*ret
));
2838 ret
->root
.indx
= sec
->id
;
2839 ret
->root
.dynstr_index
= ELFNN_R_SYM (rel
->r_info
);
2840 ret
->root
.dynindx
= -1;
2846 /* Copy the extra info we tack onto an elf_link_hash_entry. */
2849 elfNN_aarch64_copy_indirect_symbol (struct bfd_link_info
*info
,
2850 struct elf_link_hash_entry
*dir
,
2851 struct elf_link_hash_entry
*ind
)
2853 struct elf_aarch64_link_hash_entry
*edir
, *eind
;
2855 edir
= (struct elf_aarch64_link_hash_entry
*) dir
;
2856 eind
= (struct elf_aarch64_link_hash_entry
*) ind
;
2858 if (eind
->dyn_relocs
!= NULL
)
2860 if (edir
->dyn_relocs
!= NULL
)
2862 struct elf_dyn_relocs
**pp
;
2863 struct elf_dyn_relocs
*p
;
2865 /* Add reloc counts against the indirect sym to the direct sym
2866 list. Merge any entries against the same section. */
2867 for (pp
= &eind
->dyn_relocs
; (p
= *pp
) != NULL
;)
2869 struct elf_dyn_relocs
*q
;
2871 for (q
= edir
->dyn_relocs
; q
!= NULL
; q
= q
->next
)
2872 if (q
->sec
== p
->sec
)
2874 q
->pc_count
+= p
->pc_count
;
2875 q
->count
+= p
->count
;
2882 *pp
= edir
->dyn_relocs
;
2885 edir
->dyn_relocs
= eind
->dyn_relocs
;
2886 eind
->dyn_relocs
= NULL
;
2889 if (ind
->root
.type
== bfd_link_hash_indirect
)
2891 /* Copy over PLT info. */
2892 if (dir
->got
.refcount
<= 0)
2894 edir
->got_type
= eind
->got_type
;
2895 eind
->got_type
= GOT_UNKNOWN
;
2899 _bfd_elf_link_hash_copy_indirect (info
, dir
, ind
);
2902 /* Merge non-visibility st_other attributes. */
2905 elfNN_aarch64_merge_symbol_attribute (struct elf_link_hash_entry
*h
,
2906 const Elf_Internal_Sym
*isym
,
2907 bfd_boolean definition ATTRIBUTE_UNUSED
,
2908 bfd_boolean dynamic ATTRIBUTE_UNUSED
)
2910 unsigned int isym_sto
= isym
->st_other
& ~ELF_ST_VISIBILITY (-1);
2911 unsigned int h_sto
= h
->other
& ~ELF_ST_VISIBILITY (-1);
2913 if (isym_sto
== h_sto
)
2916 if (isym_sto
& ~STO_AARCH64_VARIANT_PCS
)
2917 /* Not fatal, this callback cannot fail. */
2918 _bfd_error_handler (_("unknown attribute for symbol `%s': 0x%02x"),
2919 h
->root
.root
.string
, isym_sto
);
2921 /* Note: Ideally we would warn about any attribute mismatch, but
2922 this api does not allow that without substantial changes. */
2923 if (isym_sto
& STO_AARCH64_VARIANT_PCS
)
2924 h
->other
|= STO_AARCH64_VARIANT_PCS
;
2927 /* Destroy an AArch64 elf linker hash table. */
2930 elfNN_aarch64_link_hash_table_free (bfd
*obfd
)
2932 struct elf_aarch64_link_hash_table
*ret
2933 = (struct elf_aarch64_link_hash_table
*) obfd
->link
.hash
;
2935 if (ret
->loc_hash_table
)
2936 htab_delete (ret
->loc_hash_table
);
2937 if (ret
->loc_hash_memory
)
2938 objalloc_free ((struct objalloc
*) ret
->loc_hash_memory
);
2940 bfd_hash_table_free (&ret
->stub_hash_table
);
2941 _bfd_elf_link_hash_table_free (obfd
);
2944 /* Create an AArch64 elf linker hash table. */
2946 static struct bfd_link_hash_table
*
2947 elfNN_aarch64_link_hash_table_create (bfd
*abfd
)
2949 struct elf_aarch64_link_hash_table
*ret
;
2950 size_t amt
= sizeof (struct elf_aarch64_link_hash_table
);
2952 ret
= bfd_zmalloc (amt
);
2956 if (!_bfd_elf_link_hash_table_init
2957 (&ret
->root
, abfd
, elfNN_aarch64_link_hash_newfunc
,
2958 sizeof (struct elf_aarch64_link_hash_entry
), AARCH64_ELF_DATA
))
2964 ret
->plt_header_size
= PLT_ENTRY_SIZE
;
2965 ret
->plt0_entry
= elfNN_aarch64_small_plt0_entry
;
2966 ret
->plt_entry_size
= PLT_SMALL_ENTRY_SIZE
;
2967 ret
->plt_entry
= elfNN_aarch64_small_plt_entry
;
2968 ret
->tlsdesc_plt_entry_size
= PLT_TLSDESC_ENTRY_SIZE
;
2970 ret
->dt_tlsdesc_got
= (bfd_vma
) - 1;
2972 if (!bfd_hash_table_init (&ret
->stub_hash_table
, stub_hash_newfunc
,
2973 sizeof (struct elf_aarch64_stub_hash_entry
)))
2975 _bfd_elf_link_hash_table_free (abfd
);
2979 ret
->loc_hash_table
= htab_try_create (1024,
2980 elfNN_aarch64_local_htab_hash
,
2981 elfNN_aarch64_local_htab_eq
,
2983 ret
->loc_hash_memory
= objalloc_create ();
2984 if (!ret
->loc_hash_table
|| !ret
->loc_hash_memory
)
2986 elfNN_aarch64_link_hash_table_free (abfd
);
2989 ret
->root
.root
.hash_table_free
= elfNN_aarch64_link_hash_table_free
;
2991 return &ret
->root
.root
;
2994 /* Perform relocation R_TYPE. Returns TRUE upon success, FALSE otherwise. */
2997 aarch64_relocate (unsigned int r_type
, bfd
*input_bfd
, asection
*input_section
,
2998 bfd_vma offset
, bfd_vma value
)
3000 reloc_howto_type
*howto
;
3003 howto
= elfNN_aarch64_howto_from_type (input_bfd
, r_type
);
3004 place
= (input_section
->output_section
->vma
+ input_section
->output_offset
3007 r_type
= elfNN_aarch64_bfd_reloc_from_type (input_bfd
, r_type
);
3008 value
= _bfd_aarch64_elf_resolve_relocation (input_bfd
, r_type
, place
,
3010 return _bfd_aarch64_elf_put_addend (input_bfd
,
3011 input_section
->contents
+ offset
, r_type
,
3012 howto
, value
) == bfd_reloc_ok
;
3015 static enum elf_aarch64_stub_type
3016 aarch64_select_branch_stub (bfd_vma value
, bfd_vma place
)
3018 if (aarch64_valid_for_adrp_p (value
, place
))
3019 return aarch64_stub_adrp_branch
;
3020 return aarch64_stub_long_branch
;
3023 /* Determine the type of stub needed, if any, for a call. */
3025 static enum elf_aarch64_stub_type
3026 aarch64_type_of_stub (asection
*input_sec
,
3027 const Elf_Internal_Rela
*rel
,
3029 unsigned char st_type
,
3030 bfd_vma destination
)
3033 bfd_signed_vma branch_offset
;
3034 unsigned int r_type
;
3035 enum elf_aarch64_stub_type stub_type
= aarch64_stub_none
;
3037 if (st_type
!= STT_FUNC
3038 && (sym_sec
== input_sec
))
3041 /* Determine where the call point is. */
3042 location
= (input_sec
->output_offset
3043 + input_sec
->output_section
->vma
+ rel
->r_offset
);
3045 branch_offset
= (bfd_signed_vma
) (destination
- location
);
3047 r_type
= ELFNN_R_TYPE (rel
->r_info
);
3049 /* We don't want to redirect any old unconditional jump in this way,
3050 only one which is being used for a sibcall, where it is
3051 acceptable for the IP0 and IP1 registers to be clobbered. */
3052 if ((r_type
== AARCH64_R (CALL26
) || r_type
== AARCH64_R (JUMP26
))
3053 && (branch_offset
> AARCH64_MAX_FWD_BRANCH_OFFSET
3054 || branch_offset
< AARCH64_MAX_BWD_BRANCH_OFFSET
))
3056 stub_type
= aarch64_stub_long_branch
;
3062 /* Build a name for an entry in the stub hash table. */
3065 elfNN_aarch64_stub_name (const asection
*input_section
,
3066 const asection
*sym_sec
,
3067 const struct elf_aarch64_link_hash_entry
*hash
,
3068 const Elf_Internal_Rela
*rel
)
3075 len
= 8 + 1 + strlen (hash
->root
.root
.root
.string
) + 1 + 16 + 1;
3076 stub_name
= bfd_malloc (len
);
3077 if (stub_name
!= NULL
)
3078 snprintf (stub_name
, len
, "%08x_%s+%" BFD_VMA_FMT
"x",
3079 (unsigned int) input_section
->id
,
3080 hash
->root
.root
.root
.string
,
3085 len
= 8 + 1 + 8 + 1 + 8 + 1 + 16 + 1;
3086 stub_name
= bfd_malloc (len
);
3087 if (stub_name
!= NULL
)
3088 snprintf (stub_name
, len
, "%08x_%x:%x+%" BFD_VMA_FMT
"x",
3089 (unsigned int) input_section
->id
,
3090 (unsigned int) sym_sec
->id
,
3091 (unsigned int) ELFNN_R_SYM (rel
->r_info
),
3098 /* Return TRUE if symbol H should be hashed in the `.gnu.hash' section. For
3099 executable PLT slots where the executable never takes the address of those
3100 functions, the function symbols are not added to the hash table. */
3103 elf_aarch64_hash_symbol (struct elf_link_hash_entry
*h
)
3105 if (h
->plt
.offset
!= (bfd_vma
) -1
3107 && !h
->pointer_equality_needed
)
3110 return _bfd_elf_hash_symbol (h
);
3114 /* Look up an entry in the stub hash. Stub entries are cached because
3115 creating the stub name takes a bit of time. */
3117 static struct elf_aarch64_stub_hash_entry
*
3118 elfNN_aarch64_get_stub_entry (const asection
*input_section
,
3119 const asection
*sym_sec
,
3120 struct elf_link_hash_entry
*hash
,
3121 const Elf_Internal_Rela
*rel
,
3122 struct elf_aarch64_link_hash_table
*htab
)
3124 struct elf_aarch64_stub_hash_entry
*stub_entry
;
3125 struct elf_aarch64_link_hash_entry
*h
=
3126 (struct elf_aarch64_link_hash_entry
*) hash
;
3127 const asection
*id_sec
;
3129 if ((input_section
->flags
& SEC_CODE
) == 0)
3132 /* If this input section is part of a group of sections sharing one
3133 stub section, then use the id of the first section in the group.
3134 Stub names need to include a section id, as there may well be
3135 more than one stub used to reach say, printf, and we need to
3136 distinguish between them. */
3137 id_sec
= htab
->stub_group
[input_section
->id
].link_sec
;
3139 if (h
!= NULL
&& h
->stub_cache
!= NULL
3140 && h
->stub_cache
->h
== h
&& h
->stub_cache
->id_sec
== id_sec
)
3142 stub_entry
= h
->stub_cache
;
3148 stub_name
= elfNN_aarch64_stub_name (id_sec
, sym_sec
, h
, rel
);
3149 if (stub_name
== NULL
)
3152 stub_entry
= aarch64_stub_hash_lookup (&htab
->stub_hash_table
,
3153 stub_name
, FALSE
, FALSE
);
3155 h
->stub_cache
= stub_entry
;
3164 /* Create a stub section. */
3167 _bfd_aarch64_create_stub_section (asection
*section
,
3168 struct elf_aarch64_link_hash_table
*htab
)
3174 namelen
= strlen (section
->name
);
3175 len
= namelen
+ sizeof (STUB_SUFFIX
);
3176 s_name
= bfd_alloc (htab
->stub_bfd
, len
);
3180 memcpy (s_name
, section
->name
, namelen
);
3181 memcpy (s_name
+ namelen
, STUB_SUFFIX
, sizeof (STUB_SUFFIX
));
3182 return (*htab
->add_stub_section
) (s_name
, section
);
3186 /* Find or create a stub section for a link section.
3188 Fix or create the stub section used to collect stubs attached to
3189 the specified link section. */
3192 _bfd_aarch64_get_stub_for_link_section (asection
*link_section
,
3193 struct elf_aarch64_link_hash_table
*htab
)
3195 if (htab
->stub_group
[link_section
->id
].stub_sec
== NULL
)
3196 htab
->stub_group
[link_section
->id
].stub_sec
3197 = _bfd_aarch64_create_stub_section (link_section
, htab
);
3198 return htab
->stub_group
[link_section
->id
].stub_sec
;
3202 /* Find or create a stub section in the stub group for an input
3206 _bfd_aarch64_create_or_find_stub_sec (asection
*section
,
3207 struct elf_aarch64_link_hash_table
*htab
)
3209 asection
*link_sec
= htab
->stub_group
[section
->id
].link_sec
;
3210 return _bfd_aarch64_get_stub_for_link_section (link_sec
, htab
);
3214 /* Add a new stub entry in the stub group associated with an input
3215 section to the stub hash. Not all fields of the new stub entry are
3218 static struct elf_aarch64_stub_hash_entry
*
3219 _bfd_aarch64_add_stub_entry_in_group (const char *stub_name
,
3221 struct elf_aarch64_link_hash_table
*htab
)
3225 struct elf_aarch64_stub_hash_entry
*stub_entry
;
3227 link_sec
= htab
->stub_group
[section
->id
].link_sec
;
3228 stub_sec
= _bfd_aarch64_create_or_find_stub_sec (section
, htab
);
3230 /* Enter this entry into the linker stub hash table. */
3231 stub_entry
= aarch64_stub_hash_lookup (&htab
->stub_hash_table
, stub_name
,
3233 if (stub_entry
== NULL
)
3235 /* xgettext:c-format */
3236 _bfd_error_handler (_("%pB: cannot create stub entry %s"),
3237 section
->owner
, stub_name
);
3241 stub_entry
->stub_sec
= stub_sec
;
3242 stub_entry
->stub_offset
= 0;
3243 stub_entry
->id_sec
= link_sec
;
3248 /* Add a new stub entry in the final stub section to the stub hash.
3249 Not all fields of the new stub entry are initialised. */
3251 static struct elf_aarch64_stub_hash_entry
*
3252 _bfd_aarch64_add_stub_entry_after (const char *stub_name
,
3253 asection
*link_section
,
3254 struct elf_aarch64_link_hash_table
*htab
)
3257 struct elf_aarch64_stub_hash_entry
*stub_entry
;
3260 /* Only create the actual stub if we will end up needing it. */
3261 if (htab
->fix_erratum_843419
& ERRAT_ADRP
)
3262 stub_sec
= _bfd_aarch64_get_stub_for_link_section (link_section
, htab
);
3263 stub_entry
= aarch64_stub_hash_lookup (&htab
->stub_hash_table
, stub_name
,
3265 if (stub_entry
== NULL
)
3267 _bfd_error_handler (_("cannot create stub entry %s"), stub_name
);
3271 stub_entry
->stub_sec
= stub_sec
;
3272 stub_entry
->stub_offset
= 0;
3273 stub_entry
->id_sec
= link_section
;
3280 aarch64_build_one_stub (struct bfd_hash_entry
*gen_entry
,
3283 struct elf_aarch64_stub_hash_entry
*stub_entry
;
3288 bfd_vma veneered_insn_loc
;
3289 bfd_vma veneer_entry_loc
;
3290 bfd_signed_vma branch_offset
= 0;
3291 unsigned int template_size
;
3292 const uint32_t *template;
3294 struct bfd_link_info
*info
;
3296 /* Massage our args to the form they really have. */
3297 stub_entry
= (struct elf_aarch64_stub_hash_entry
*) gen_entry
;
3299 info
= (struct bfd_link_info
*) in_arg
;
3301 /* Fail if the target section could not be assigned to an output
3302 section. The user should fix his linker script. */
3303 if (stub_entry
->target_section
->output_section
== NULL
3304 && info
->non_contiguous_regions
)
3305 info
->callbacks
->einfo (_("%F%P: Could not assign '%pA' to an output section. "
3307 "--enable-non-contiguous-regions.\n"),
3308 stub_entry
->target_section
);
3310 stub_sec
= stub_entry
->stub_sec
;
3312 /* Make a note of the offset within the stubs for this entry. */
3313 stub_entry
->stub_offset
= stub_sec
->size
;
3314 loc
= stub_sec
->contents
+ stub_entry
->stub_offset
;
3316 stub_bfd
= stub_sec
->owner
;
3318 /* This is the address of the stub destination. */
3319 sym_value
= (stub_entry
->target_value
3320 + stub_entry
->target_section
->output_offset
3321 + stub_entry
->target_section
->output_section
->vma
);
3323 if (stub_entry
->stub_type
== aarch64_stub_long_branch
)
3325 bfd_vma place
= (stub_entry
->stub_offset
+ stub_sec
->output_section
->vma
3326 + stub_sec
->output_offset
);
3328 /* See if we can relax the stub. */
3329 if (aarch64_valid_for_adrp_p (sym_value
, place
))
3330 stub_entry
->stub_type
= aarch64_select_branch_stub (sym_value
, place
);
3333 switch (stub_entry
->stub_type
)
3335 case aarch64_stub_adrp_branch
:
3336 template = aarch64_adrp_branch_stub
;
3337 template_size
= sizeof (aarch64_adrp_branch_stub
);
3339 case aarch64_stub_long_branch
:
3340 template = aarch64_long_branch_stub
;
3341 template_size
= sizeof (aarch64_long_branch_stub
);
3343 case aarch64_stub_erratum_835769_veneer
:
3344 template = aarch64_erratum_835769_stub
;
3345 template_size
= sizeof (aarch64_erratum_835769_stub
);
3347 case aarch64_stub_erratum_843419_veneer
:
3348 template = aarch64_erratum_843419_stub
;
3349 template_size
= sizeof (aarch64_erratum_843419_stub
);
3355 for (i
= 0; i
< (template_size
/ sizeof template[0]); i
++)
3357 bfd_putl32 (template[i
], loc
);
3361 template_size
= (template_size
+ 7) & ~7;
3362 stub_sec
->size
+= template_size
;
3364 switch (stub_entry
->stub_type
)
3366 case aarch64_stub_adrp_branch
:
3367 if (!aarch64_relocate (AARCH64_R (ADR_PREL_PG_HI21
), stub_bfd
, stub_sec
,
3368 stub_entry
->stub_offset
, sym_value
))
3369 /* The stub would not have been relaxed if the offset was out
3373 if (!aarch64_relocate (AARCH64_R (ADD_ABS_LO12_NC
), stub_bfd
, stub_sec
,
3374 stub_entry
->stub_offset
+ 4, sym_value
))
3378 case aarch64_stub_long_branch
:
3379 /* We want the value relative to the address 12 bytes back from the
3381 if (!aarch64_relocate (AARCH64_R (PRELNN
), stub_bfd
, stub_sec
,
3382 stub_entry
->stub_offset
+ 16, sym_value
+ 12))
3386 case aarch64_stub_erratum_835769_veneer
:
3387 veneered_insn_loc
= stub_entry
->target_section
->output_section
->vma
3388 + stub_entry
->target_section
->output_offset
3389 + stub_entry
->target_value
;
3390 veneer_entry_loc
= stub_entry
->stub_sec
->output_section
->vma
3391 + stub_entry
->stub_sec
->output_offset
3392 + stub_entry
->stub_offset
;
3393 branch_offset
= veneered_insn_loc
- veneer_entry_loc
;
3394 branch_offset
>>= 2;
3395 branch_offset
&= 0x3ffffff;
3396 bfd_putl32 (stub_entry
->veneered_insn
,
3397 stub_sec
->contents
+ stub_entry
->stub_offset
);
3398 bfd_putl32 (template[1] | branch_offset
,
3399 stub_sec
->contents
+ stub_entry
->stub_offset
+ 4);
3402 case aarch64_stub_erratum_843419_veneer
:
3403 if (!aarch64_relocate (AARCH64_R (JUMP26
), stub_bfd
, stub_sec
,
3404 stub_entry
->stub_offset
+ 4, sym_value
+ 4))
3415 /* As above, but don't actually build the stub. Just bump offset so
3416 we know stub section sizes. */
3419 aarch64_size_one_stub (struct bfd_hash_entry
*gen_entry
, void *in_arg
)
3421 struct elf_aarch64_stub_hash_entry
*stub_entry
;
3422 struct elf_aarch64_link_hash_table
*htab
;
3425 /* Massage our args to the form they really have. */
3426 stub_entry
= (struct elf_aarch64_stub_hash_entry
*) gen_entry
;
3427 htab
= (struct elf_aarch64_link_hash_table
*) in_arg
;
3429 switch (stub_entry
->stub_type
)
3431 case aarch64_stub_adrp_branch
:
3432 size
= sizeof (aarch64_adrp_branch_stub
);
3434 case aarch64_stub_long_branch
:
3435 size
= sizeof (aarch64_long_branch_stub
);
3437 case aarch64_stub_erratum_835769_veneer
:
3438 size
= sizeof (aarch64_erratum_835769_stub
);
3440 case aarch64_stub_erratum_843419_veneer
:
3442 if (htab
->fix_erratum_843419
== ERRAT_ADR
)
3444 size
= sizeof (aarch64_erratum_843419_stub
);
3451 size
= (size
+ 7) & ~7;
3452 stub_entry
->stub_sec
->size
+= size
;
3456 /* External entry points for sizing and building linker stubs. */
3458 /* Set up various things so that we can make a list of input sections
3459 for each output section included in the link. Returns -1 on error,
3460 0 when no stubs will be needed, and 1 on success. */
3463 elfNN_aarch64_setup_section_lists (bfd
*output_bfd
,
3464 struct bfd_link_info
*info
)
3467 unsigned int bfd_count
;
3468 unsigned int top_id
, top_index
;
3470 asection
**input_list
, **list
;
3472 struct elf_aarch64_link_hash_table
*htab
=
3473 elf_aarch64_hash_table (info
);
3475 if (!is_elf_hash_table (htab
))
3478 /* Count the number of input BFDs and find the top input section id. */
3479 for (input_bfd
= info
->input_bfds
, bfd_count
= 0, top_id
= 0;
3480 input_bfd
!= NULL
; input_bfd
= input_bfd
->link
.next
)
3483 for (section
= input_bfd
->sections
;
3484 section
!= NULL
; section
= section
->next
)
3486 if (top_id
< section
->id
)
3487 top_id
= section
->id
;
3490 htab
->bfd_count
= bfd_count
;
3492 amt
= sizeof (struct map_stub
) * (top_id
+ 1);
3493 htab
->stub_group
= bfd_zmalloc (amt
);
3494 if (htab
->stub_group
== NULL
)
3497 /* We can't use output_bfd->section_count here to find the top output
3498 section index as some sections may have been removed, and
3499 _bfd_strip_section_from_output doesn't renumber the indices. */
3500 for (section
= output_bfd
->sections
, top_index
= 0;
3501 section
!= NULL
; section
= section
->next
)
3503 if (top_index
< section
->index
)
3504 top_index
= section
->index
;
3507 htab
->top_index
= top_index
;
3508 amt
= sizeof (asection
*) * (top_index
+ 1);
3509 input_list
= bfd_malloc (amt
);
3510 htab
->input_list
= input_list
;
3511 if (input_list
== NULL
)
3514 /* For sections we aren't interested in, mark their entries with a
3515 value we can check later. */
3516 list
= input_list
+ top_index
;
3518 *list
= bfd_abs_section_ptr
;
3519 while (list
-- != input_list
);
3521 for (section
= output_bfd
->sections
;
3522 section
!= NULL
; section
= section
->next
)
3524 if ((section
->flags
& SEC_CODE
) != 0)
3525 input_list
[section
->index
] = NULL
;
3531 /* Used by elfNN_aarch64_next_input_section and group_sections. */
3532 #define PREV_SEC(sec) (htab->stub_group[(sec)->id].link_sec)
3534 /* The linker repeatedly calls this function for each input section,
3535 in the order that input sections are linked into output sections.
3536 Build lists of input sections to determine groupings between which
3537 we may insert linker stubs. */
3540 elfNN_aarch64_next_input_section (struct bfd_link_info
*info
, asection
*isec
)
3542 struct elf_aarch64_link_hash_table
*htab
=
3543 elf_aarch64_hash_table (info
);
3545 if (isec
->output_section
->index
<= htab
->top_index
)
3547 asection
**list
= htab
->input_list
+ isec
->output_section
->index
;
3549 if (*list
!= bfd_abs_section_ptr
)
3551 /* Steal the link_sec pointer for our list. */
3552 /* This happens to make the list in reverse order,
3553 which is what we want. */
3554 PREV_SEC (isec
) = *list
;
3560 /* See whether we can group stub sections together. Grouping stub
3561 sections may result in fewer stubs. More importantly, we need to
3562 put all .init* and .fini* stubs at the beginning of the .init or
3563 .fini output sections respectively, because glibc splits the
3564 _init and _fini functions into multiple parts. Putting a stub in
3565 the middle of a function is not a good idea. */
3568 group_sections (struct elf_aarch64_link_hash_table
*htab
,
3569 bfd_size_type stub_group_size
,
3570 bfd_boolean stubs_always_before_branch
)
3572 asection
**list
= htab
->input_list
+ htab
->top_index
;
3576 asection
*tail
= *list
;
3578 if (tail
== bfd_abs_section_ptr
)
3581 while (tail
!= NULL
)
3585 bfd_size_type total
;
3589 while ((prev
= PREV_SEC (curr
)) != NULL
3590 && ((total
+= curr
->output_offset
- prev
->output_offset
)
3594 /* OK, the size from the start of CURR to the end is less
3595 than stub_group_size and thus can be handled by one stub
3596 section. (Or the tail section is itself larger than
3597 stub_group_size, in which case we may be toast.)
3598 We should really be keeping track of the total size of
3599 stubs added here, as stubs contribute to the final output
3603 prev
= PREV_SEC (tail
);
3604 /* Set up this stub group. */
3605 htab
->stub_group
[tail
->id
].link_sec
= curr
;
3607 while (tail
!= curr
&& (tail
= prev
) != NULL
);
3609 /* But wait, there's more! Input sections up to stub_group_size
3610 bytes before the stub section can be handled by it too. */
3611 if (!stubs_always_before_branch
)
3615 && ((total
+= tail
->output_offset
- prev
->output_offset
)
3619 prev
= PREV_SEC (tail
);
3620 htab
->stub_group
[tail
->id
].link_sec
= curr
;
3626 while (list
-- != htab
->input_list
);
3628 free (htab
->input_list
);
3633 #define AARCH64_BITS(x, pos, n) (((x) >> (pos)) & ((1 << (n)) - 1))
3635 #define AARCH64_RT(insn) AARCH64_BITS (insn, 0, 5)
3636 #define AARCH64_RT2(insn) AARCH64_BITS (insn, 10, 5)
3637 #define AARCH64_RA(insn) AARCH64_BITS (insn, 10, 5)
3638 #define AARCH64_RD(insn) AARCH64_BITS (insn, 0, 5)
3639 #define AARCH64_RN(insn) AARCH64_BITS (insn, 5, 5)
3640 #define AARCH64_RM(insn) AARCH64_BITS (insn, 16, 5)
3642 #define AARCH64_MAC(insn) (((insn) & 0xff000000) == 0x9b000000)
3643 #define AARCH64_BIT(insn, n) AARCH64_BITS (insn, n, 1)
3644 #define AARCH64_OP31(insn) AARCH64_BITS (insn, 21, 3)
3645 #define AARCH64_ZR 0x1f
3647 /* All ld/st ops. See C4-182 of the ARM ARM. The encoding space for
3648 LD_PCREL, LDST_RO, LDST_UI and LDST_UIMM cover prefetch ops. */
3650 #define AARCH64_LD(insn) (AARCH64_BIT (insn, 22) == 1)
3651 #define AARCH64_LDST(insn) (((insn) & 0x0a000000) == 0x08000000)
3652 #define AARCH64_LDST_EX(insn) (((insn) & 0x3f000000) == 0x08000000)
3653 #define AARCH64_LDST_PCREL(insn) (((insn) & 0x3b000000) == 0x18000000)
3654 #define AARCH64_LDST_NAP(insn) (((insn) & 0x3b800000) == 0x28000000)
3655 #define AARCH64_LDSTP_PI(insn) (((insn) & 0x3b800000) == 0x28800000)
3656 #define AARCH64_LDSTP_O(insn) (((insn) & 0x3b800000) == 0x29000000)
3657 #define AARCH64_LDSTP_PRE(insn) (((insn) & 0x3b800000) == 0x29800000)
3658 #define AARCH64_LDST_UI(insn) (((insn) & 0x3b200c00) == 0x38000000)
3659 #define AARCH64_LDST_PIIMM(insn) (((insn) & 0x3b200c00) == 0x38000400)
3660 #define AARCH64_LDST_U(insn) (((insn) & 0x3b200c00) == 0x38000800)
3661 #define AARCH64_LDST_PREIMM(insn) (((insn) & 0x3b200c00) == 0x38000c00)
3662 #define AARCH64_LDST_RO(insn) (((insn) & 0x3b200c00) == 0x38200800)
3663 #define AARCH64_LDST_UIMM(insn) (((insn) & 0x3b000000) == 0x39000000)
3664 #define AARCH64_LDST_SIMD_M(insn) (((insn) & 0xbfbf0000) == 0x0c000000)
3665 #define AARCH64_LDST_SIMD_M_PI(insn) (((insn) & 0xbfa00000) == 0x0c800000)
3666 #define AARCH64_LDST_SIMD_S(insn) (((insn) & 0xbf9f0000) == 0x0d000000)
3667 #define AARCH64_LDST_SIMD_S_PI(insn) (((insn) & 0xbf800000) == 0x0d800000)
3669 /* Classify an INSN if it is indeed a load/store.
3671 Return TRUE if INSN is a LD/ST instruction otherwise return FALSE.
3673 For scalar LD/ST instructions PAIR is FALSE, RT is returned and RT2
3676 For LD/ST pair instructions PAIR is TRUE, RT and RT2 are returned. */
3679 aarch64_mem_op_p (uint32_t insn
, unsigned int *rt
, unsigned int *rt2
,
3680 bfd_boolean
*pair
, bfd_boolean
*load
)
3688 /* Bail out quickly if INSN doesn't fall into the load-store
3690 if (!AARCH64_LDST (insn
))
3695 if (AARCH64_LDST_EX (insn
))
3697 *rt
= AARCH64_RT (insn
);
3699 if (AARCH64_BIT (insn
, 21) == 1)
3702 *rt2
= AARCH64_RT2 (insn
);
3704 *load
= AARCH64_LD (insn
);
3707 else if (AARCH64_LDST_NAP (insn
)
3708 || AARCH64_LDSTP_PI (insn
)
3709 || AARCH64_LDSTP_O (insn
)
3710 || AARCH64_LDSTP_PRE (insn
))
3713 *rt
= AARCH64_RT (insn
);
3714 *rt2
= AARCH64_RT2 (insn
);
3715 *load
= AARCH64_LD (insn
);
3718 else if (AARCH64_LDST_PCREL (insn
)
3719 || AARCH64_LDST_UI (insn
)
3720 || AARCH64_LDST_PIIMM (insn
)
3721 || AARCH64_LDST_U (insn
)
3722 || AARCH64_LDST_PREIMM (insn
)
3723 || AARCH64_LDST_RO (insn
)
3724 || AARCH64_LDST_UIMM (insn
))
3726 *rt
= AARCH64_RT (insn
);
3728 if (AARCH64_LDST_PCREL (insn
))
3730 opc
= AARCH64_BITS (insn
, 22, 2);
3731 v
= AARCH64_BIT (insn
, 26);
3732 opc_v
= opc
| (v
<< 2);
3733 *load
= (opc_v
== 1 || opc_v
== 2 || opc_v
== 3
3734 || opc_v
== 5 || opc_v
== 7);
3737 else if (AARCH64_LDST_SIMD_M (insn
)
3738 || AARCH64_LDST_SIMD_M_PI (insn
))
3740 *rt
= AARCH64_RT (insn
);
3741 *load
= AARCH64_BIT (insn
, 22);
3742 opcode
= (insn
>> 12) & 0xf;
3769 else if (AARCH64_LDST_SIMD_S (insn
)
3770 || AARCH64_LDST_SIMD_S_PI (insn
))
3772 *rt
= AARCH64_RT (insn
);
3773 r
= (insn
>> 21) & 1;
3774 *load
= AARCH64_BIT (insn
, 22);
3775 opcode
= (insn
>> 13) & 0x7;
3787 *rt2
= *rt
+ (r
== 0 ? 2 : 3);
3795 *rt2
= *rt
+ (r
== 0 ? 2 : 3);
3807 /* Return TRUE if INSN is multiply-accumulate. */
3810 aarch64_mlxl_p (uint32_t insn
)
3812 uint32_t op31
= AARCH64_OP31 (insn
);
3814 if (AARCH64_MAC (insn
)
3815 && (op31
== 0 || op31
== 1 || op31
== 5)
3816 /* Exclude MUL instructions which are encoded as a multiple accumulate
3818 && AARCH64_RA (insn
) != AARCH64_ZR
)
3824 /* Some early revisions of the Cortex-A53 have an erratum (835769) whereby
3825 it is possible for a 64-bit multiply-accumulate instruction to generate an
3826 incorrect result. The details are quite complex and hard to
3827 determine statically, since branches in the code may exist in some
3828 circumstances, but all cases end with a memory (load, store, or
3829 prefetch) instruction followed immediately by the multiply-accumulate
3830 operation. We employ a linker patching technique, by moving the potentially
3831 affected multiply-accumulate instruction into a patch region and replacing
3832 the original instruction with a branch to the patch. This function checks
3833 if INSN_1 is the memory operation followed by a multiply-accumulate
3834 operation (INSN_2). Return TRUE if an erratum sequence is found, FALSE
3835 if INSN_1 and INSN_2 are safe. */
3838 aarch64_erratum_sequence (uint32_t insn_1
, uint32_t insn_2
)
3848 if (aarch64_mlxl_p (insn_2
)
3849 && aarch64_mem_op_p (insn_1
, &rt
, &rt2
, &pair
, &load
))
3851 /* Any SIMD memory op is independent of the subsequent MLA
3852 by definition of the erratum. */
3853 if (AARCH64_BIT (insn_1
, 26))
3856 /* If not SIMD, check for integer memory ops and MLA relationship. */
3857 rn
= AARCH64_RN (insn_2
);
3858 ra
= AARCH64_RA (insn_2
);
3859 rm
= AARCH64_RM (insn_2
);
3861 /* If this is a load and there's a true(RAW) dependency, we are safe
3862 and this is not an erratum sequence. */
3864 (rt
== rn
|| rt
== rm
|| rt
== ra
3865 || (pair
&& (rt2
== rn
|| rt2
== rm
|| rt2
== ra
))))
3868 /* We conservatively put out stubs for all other cases (including
3876 /* Used to order a list of mapping symbols by address. */
3879 elf_aarch64_compare_mapping (const void *a
, const void *b
)
3881 const elf_aarch64_section_map
*amap
= (const elf_aarch64_section_map
*) a
;
3882 const elf_aarch64_section_map
*bmap
= (const elf_aarch64_section_map
*) b
;
3884 if (amap
->vma
> bmap
->vma
)
3886 else if (amap
->vma
< bmap
->vma
)
3888 else if (amap
->type
> bmap
->type
)
3889 /* Ensure results do not depend on the host qsort for objects with
3890 multiple mapping symbols at the same address by sorting on type
3893 else if (amap
->type
< bmap
->type
)
3901 _bfd_aarch64_erratum_835769_stub_name (unsigned num_fixes
)
3903 char *stub_name
= (char *) bfd_malloc
3904 (strlen ("__erratum_835769_veneer_") + 16);
3905 if (stub_name
!= NULL
)
3906 sprintf (stub_name
,"__erratum_835769_veneer_%d", num_fixes
);
3910 /* Scan for Cortex-A53 erratum 835769 sequence.
3912 Return TRUE else FALSE on abnormal termination. */
3915 _bfd_aarch64_erratum_835769_scan (bfd
*input_bfd
,
3916 struct bfd_link_info
*info
,
3917 unsigned int *num_fixes_p
)
3920 struct elf_aarch64_link_hash_table
*htab
= elf_aarch64_hash_table (info
);
3921 unsigned int num_fixes
= *num_fixes_p
;
3926 for (section
= input_bfd
->sections
;
3928 section
= section
->next
)
3930 bfd_byte
*contents
= NULL
;
3931 struct _aarch64_elf_section_data
*sec_data
;
3934 if (elf_section_type (section
) != SHT_PROGBITS
3935 || (elf_section_flags (section
) & SHF_EXECINSTR
) == 0
3936 || (section
->flags
& SEC_EXCLUDE
) != 0
3937 || (section
->sec_info_type
== SEC_INFO_TYPE_JUST_SYMS
)
3938 || (section
->output_section
== bfd_abs_section_ptr
))
3941 if (elf_section_data (section
)->this_hdr
.contents
!= NULL
)
3942 contents
= elf_section_data (section
)->this_hdr
.contents
;
3943 else if (! bfd_malloc_and_get_section (input_bfd
, section
, &contents
))
3946 sec_data
= elf_aarch64_section_data (section
);
3948 qsort (sec_data
->map
, sec_data
->mapcount
,
3949 sizeof (elf_aarch64_section_map
), elf_aarch64_compare_mapping
);
3951 for (span
= 0; span
< sec_data
->mapcount
; span
++)
3953 unsigned int span_start
= sec_data
->map
[span
].vma
;
3954 unsigned int span_end
= ((span
== sec_data
->mapcount
- 1)
3955 ? sec_data
->map
[0].vma
+ section
->size
3956 : sec_data
->map
[span
+ 1].vma
);
3958 char span_type
= sec_data
->map
[span
].type
;
3960 if (span_type
== 'd')
3963 for (i
= span_start
; i
+ 4 < span_end
; i
+= 4)
3965 uint32_t insn_1
= bfd_getl32 (contents
+ i
);
3966 uint32_t insn_2
= bfd_getl32 (contents
+ i
+ 4);
3968 if (aarch64_erratum_sequence (insn_1
, insn_2
))
3970 struct elf_aarch64_stub_hash_entry
*stub_entry
;
3971 char *stub_name
= _bfd_aarch64_erratum_835769_stub_name (num_fixes
);
3975 stub_entry
= _bfd_aarch64_add_stub_entry_in_group (stub_name
,
3981 stub_entry
->stub_type
= aarch64_stub_erratum_835769_veneer
;
3982 stub_entry
->target_section
= section
;
3983 stub_entry
->target_value
= i
+ 4;
3984 stub_entry
->veneered_insn
= insn_2
;
3985 stub_entry
->output_name
= stub_name
;
3990 if (elf_section_data (section
)->this_hdr
.contents
== NULL
)
3994 *num_fixes_p
= num_fixes
;
4000 /* Test if instruction INSN is ADRP. */
4003 _bfd_aarch64_adrp_p (uint32_t insn
)
4005 return ((insn
& AARCH64_ADRP_OP_MASK
) == AARCH64_ADRP_OP
);
4009 /* Helper predicate to look for cortex-a53 erratum 843419 sequence 1. */
4012 _bfd_aarch64_erratum_843419_sequence_p (uint32_t insn_1
, uint32_t insn_2
,
4020 return (aarch64_mem_op_p (insn_2
, &rt
, &rt2
, &pair
, &load
)
4023 && AARCH64_LDST_UIMM (insn_3
)
4024 && AARCH64_RN (insn_3
) == AARCH64_RD (insn_1
));
4028 /* Test for the presence of Cortex-A53 erratum 843419 instruction sequence.
4030 Return TRUE if section CONTENTS at offset I contains one of the
4031 erratum 843419 sequences, otherwise return FALSE. If a sequence is
4032 seen set P_VENEER_I to the offset of the final LOAD/STORE
4033 instruction in the sequence.
4037 _bfd_aarch64_erratum_843419_p (bfd_byte
*contents
, bfd_vma vma
,
4038 bfd_vma i
, bfd_vma span_end
,
4039 bfd_vma
*p_veneer_i
)
4041 uint32_t insn_1
= bfd_getl32 (contents
+ i
);
4043 if (!_bfd_aarch64_adrp_p (insn_1
))
4046 if (span_end
< i
+ 12)
4049 uint32_t insn_2
= bfd_getl32 (contents
+ i
+ 4);
4050 uint32_t insn_3
= bfd_getl32 (contents
+ i
+ 8);
4052 if ((vma
& 0xfff) != 0xff8 && (vma
& 0xfff) != 0xffc)
4055 if (_bfd_aarch64_erratum_843419_sequence_p (insn_1
, insn_2
, insn_3
))
4057 *p_veneer_i
= i
+ 8;
4061 if (span_end
< i
+ 16)
4064 uint32_t insn_4
= bfd_getl32 (contents
+ i
+ 12);
4066 if (_bfd_aarch64_erratum_843419_sequence_p (insn_1
, insn_2
, insn_4
))
4068 *p_veneer_i
= i
+ 12;
4076 /* Resize all stub sections. */
4079 _bfd_aarch64_resize_stubs (struct elf_aarch64_link_hash_table
*htab
)
4083 /* OK, we've added some stubs. Find out the new size of the
4085 for (section
= htab
->stub_bfd
->sections
;
4086 section
!= NULL
; section
= section
->next
)
4088 /* Ignore non-stub sections. */
4089 if (!strstr (section
->name
, STUB_SUFFIX
))
4094 bfd_hash_traverse (&htab
->stub_hash_table
, aarch64_size_one_stub
, htab
);
4096 for (section
= htab
->stub_bfd
->sections
;
4097 section
!= NULL
; section
= section
->next
)
4099 if (!strstr (section
->name
, STUB_SUFFIX
))
4102 /* Add space for a branch. Add 8 bytes to keep section 8 byte aligned,
4103 as long branch stubs contain a 64-bit address. */
4107 /* Ensure all stub sections have a size which is a multiple of
4108 4096. This is important in order to ensure that the insertion
4109 of stub sections does not in itself move existing code around
4110 in such a way that new errata sequences are created. We only do this
4111 when the ADRP workaround is enabled. If only the ADR workaround is
4112 enabled then the stubs workaround won't ever be used. */
4113 if (htab
->fix_erratum_843419
& ERRAT_ADRP
)
4115 section
->size
= BFD_ALIGN (section
->size
, 0x1000);
4119 /* Construct an erratum 843419 workaround stub name. */
4122 _bfd_aarch64_erratum_843419_stub_name (asection
*input_section
,
4125 const bfd_size_type len
= 8 + 4 + 1 + 8 + 1 + 16 + 1;
4126 char *stub_name
= bfd_malloc (len
);
4128 if (stub_name
!= NULL
)
4129 snprintf (stub_name
, len
, "e843419@%04x_%08x_%" BFD_VMA_FMT
"x",
4130 input_section
->owner
->id
,
4136 /* Build a stub_entry structure describing an 843419 fixup.
4138 The stub_entry constructed is populated with the bit pattern INSN
4139 of the instruction located at OFFSET within input SECTION.
4141 Returns TRUE on success. */
4144 _bfd_aarch64_erratum_843419_fixup (uint32_t insn
,
4145 bfd_vma adrp_offset
,
4146 bfd_vma ldst_offset
,
4148 struct bfd_link_info
*info
)
4150 struct elf_aarch64_link_hash_table
*htab
= elf_aarch64_hash_table (info
);
4152 struct elf_aarch64_stub_hash_entry
*stub_entry
;
4154 stub_name
= _bfd_aarch64_erratum_843419_stub_name (section
, ldst_offset
);
4155 if (stub_name
== NULL
)
4157 stub_entry
= aarch64_stub_hash_lookup (&htab
->stub_hash_table
, stub_name
,
4165 /* We always place an 843419 workaround veneer in the stub section
4166 attached to the input section in which an erratum sequence has
4167 been found. This ensures that later in the link process (in
4168 elfNN_aarch64_write_section) when we copy the veneered
4169 instruction from the input section into the stub section the
4170 copied instruction will have had any relocations applied to it.
4171 If we placed workaround veneers in any other stub section then we
4172 could not assume that all relocations have been processed on the
4173 corresponding input section at the point we output the stub
4176 stub_entry
= _bfd_aarch64_add_stub_entry_after (stub_name
, section
, htab
);
4177 if (stub_entry
== NULL
)
4183 stub_entry
->adrp_offset
= adrp_offset
;
4184 stub_entry
->target_value
= ldst_offset
;
4185 stub_entry
->target_section
= section
;
4186 stub_entry
->stub_type
= aarch64_stub_erratum_843419_veneer
;
4187 stub_entry
->veneered_insn
= insn
;
4188 stub_entry
->output_name
= stub_name
;
4194 /* Scan an input section looking for the signature of erratum 843419.
4196 Scans input SECTION in INPUT_BFD looking for erratum 843419
4197 signatures, for each signature found a stub_entry is created
4198 describing the location of the erratum for subsequent fixup.
4200 Return TRUE on successful scan, FALSE on failure to scan.
4204 _bfd_aarch64_erratum_843419_scan (bfd
*input_bfd
, asection
*section
,
4205 struct bfd_link_info
*info
)
4207 struct elf_aarch64_link_hash_table
*htab
= elf_aarch64_hash_table (info
);
4212 if (elf_section_type (section
) != SHT_PROGBITS
4213 || (elf_section_flags (section
) & SHF_EXECINSTR
) == 0
4214 || (section
->flags
& SEC_EXCLUDE
) != 0
4215 || (section
->sec_info_type
== SEC_INFO_TYPE_JUST_SYMS
)
4216 || (section
->output_section
== bfd_abs_section_ptr
))
4221 bfd_byte
*contents
= NULL
;
4222 struct _aarch64_elf_section_data
*sec_data
;
4225 if (elf_section_data (section
)->this_hdr
.contents
!= NULL
)
4226 contents
= elf_section_data (section
)->this_hdr
.contents
;
4227 else if (! bfd_malloc_and_get_section (input_bfd
, section
, &contents
))
4230 sec_data
= elf_aarch64_section_data (section
);
4232 qsort (sec_data
->map
, sec_data
->mapcount
,
4233 sizeof (elf_aarch64_section_map
), elf_aarch64_compare_mapping
);
4235 for (span
= 0; span
< sec_data
->mapcount
; span
++)
4237 unsigned int span_start
= sec_data
->map
[span
].vma
;
4238 unsigned int span_end
= ((span
== sec_data
->mapcount
- 1)
4239 ? sec_data
->map
[0].vma
+ section
->size
4240 : sec_data
->map
[span
+ 1].vma
);
4242 char span_type
= sec_data
->map
[span
].type
;
4244 if (span_type
== 'd')
4247 for (i
= span_start
; i
+ 8 < span_end
; i
+= 4)
4249 bfd_vma vma
= (section
->output_section
->vma
4250 + section
->output_offset
4254 if (_bfd_aarch64_erratum_843419_p
4255 (contents
, vma
, i
, span_end
, &veneer_i
))
4257 uint32_t insn
= bfd_getl32 (contents
+ veneer_i
);
4259 if (!_bfd_aarch64_erratum_843419_fixup (insn
, i
, veneer_i
,
4266 if (elf_section_data (section
)->this_hdr
.contents
== NULL
)
4275 /* Determine and set the size of the stub section for a final link.
4277 The basic idea here is to examine all the relocations looking for
4278 PC-relative calls to a target that is unreachable with a "bl"
4282 elfNN_aarch64_size_stubs (bfd
*output_bfd
,
4284 struct bfd_link_info
*info
,
4285 bfd_signed_vma group_size
,
4286 asection
* (*add_stub_section
) (const char *,
4288 void (*layout_sections_again
) (void))
4290 bfd_size_type stub_group_size
;
4291 bfd_boolean stubs_always_before_branch
;
4292 bfd_boolean stub_changed
= FALSE
;
4293 struct elf_aarch64_link_hash_table
*htab
= elf_aarch64_hash_table (info
);
4294 unsigned int num_erratum_835769_fixes
= 0;
4296 /* Propagate mach to stub bfd, because it may not have been
4297 finalized when we created stub_bfd. */
4298 bfd_set_arch_mach (stub_bfd
, bfd_get_arch (output_bfd
),
4299 bfd_get_mach (output_bfd
));
4301 /* Stash our params away. */
4302 htab
->stub_bfd
= stub_bfd
;
4303 htab
->add_stub_section
= add_stub_section
;
4304 htab
->layout_sections_again
= layout_sections_again
;
4305 stubs_always_before_branch
= group_size
< 0;
4307 stub_group_size
= -group_size
;
4309 stub_group_size
= group_size
;
4311 if (stub_group_size
== 1)
4313 /* Default values. */
4314 /* AArch64 branch range is +-128MB. The value used is 1MB less. */
4315 stub_group_size
= 127 * 1024 * 1024;
4318 group_sections (htab
, stub_group_size
, stubs_always_before_branch
);
4320 (*htab
->layout_sections_again
) ();
4322 if (htab
->fix_erratum_835769
)
4326 for (input_bfd
= info
->input_bfds
;
4327 input_bfd
!= NULL
; input_bfd
= input_bfd
->link
.next
)
4329 if (!is_aarch64_elf (input_bfd
)
4330 || (input_bfd
->flags
& BFD_LINKER_CREATED
) != 0)
4333 if (!_bfd_aarch64_erratum_835769_scan (input_bfd
, info
,
4334 &num_erratum_835769_fixes
))
4338 _bfd_aarch64_resize_stubs (htab
);
4339 (*htab
->layout_sections_again
) ();
4342 if (htab
->fix_erratum_843419
!= ERRAT_NONE
)
4346 for (input_bfd
= info
->input_bfds
;
4348 input_bfd
= input_bfd
->link
.next
)
4352 if (!is_aarch64_elf (input_bfd
)
4353 || (input_bfd
->flags
& BFD_LINKER_CREATED
) != 0)
4356 for (section
= input_bfd
->sections
;
4358 section
= section
->next
)
4359 if (!_bfd_aarch64_erratum_843419_scan (input_bfd
, section
, info
))
4363 _bfd_aarch64_resize_stubs (htab
);
4364 (*htab
->layout_sections_again
) ();
4371 for (input_bfd
= info
->input_bfds
;
4372 input_bfd
!= NULL
; input_bfd
= input_bfd
->link
.next
)
4374 Elf_Internal_Shdr
*symtab_hdr
;
4376 Elf_Internal_Sym
*local_syms
= NULL
;
4378 if (!is_aarch64_elf (input_bfd
)
4379 || (input_bfd
->flags
& BFD_LINKER_CREATED
) != 0)
4382 /* We'll need the symbol table in a second. */
4383 symtab_hdr
= &elf_tdata (input_bfd
)->symtab_hdr
;
4384 if (symtab_hdr
->sh_info
== 0)
4387 /* Walk over each section attached to the input bfd. */
4388 for (section
= input_bfd
->sections
;
4389 section
!= NULL
; section
= section
->next
)
4391 Elf_Internal_Rela
*internal_relocs
, *irelaend
, *irela
;
4393 /* If there aren't any relocs, then there's nothing more
4395 if ((section
->flags
& SEC_RELOC
) == 0
4396 || section
->reloc_count
== 0
4397 || (section
->flags
& SEC_CODE
) == 0)
4400 /* If this section is a link-once section that will be
4401 discarded, then don't create any stubs. */
4402 if (section
->output_section
== NULL
4403 || section
->output_section
->owner
!= output_bfd
)
4406 /* Get the relocs. */
4408 = _bfd_elf_link_read_relocs (input_bfd
, section
, NULL
,
4409 NULL
, info
->keep_memory
);
4410 if (internal_relocs
== NULL
)
4411 goto error_ret_free_local
;
4413 /* Now examine each relocation. */
4414 irela
= internal_relocs
;
4415 irelaend
= irela
+ section
->reloc_count
;
4416 for (; irela
< irelaend
; irela
++)
4418 unsigned int r_type
, r_indx
;
4419 enum elf_aarch64_stub_type stub_type
;
4420 struct elf_aarch64_stub_hash_entry
*stub_entry
;
4423 bfd_vma destination
;
4424 struct elf_aarch64_link_hash_entry
*hash
;
4425 const char *sym_name
;
4427 const asection
*id_sec
;
4428 unsigned char st_type
;
4431 r_type
= ELFNN_R_TYPE (irela
->r_info
);
4432 r_indx
= ELFNN_R_SYM (irela
->r_info
);
4434 if (r_type
>= (unsigned int) R_AARCH64_end
)
4436 bfd_set_error (bfd_error_bad_value
);
4437 error_ret_free_internal
:
4438 if (elf_section_data (section
)->relocs
== NULL
)
4439 free (internal_relocs
);
4440 goto error_ret_free_local
;
4443 /* Only look for stubs on unconditional branch and
4444 branch and link instructions. */
4445 if (r_type
!= (unsigned int) AARCH64_R (CALL26
)
4446 && r_type
!= (unsigned int) AARCH64_R (JUMP26
))
4449 /* Now determine the call target, its name, value,
4456 if (r_indx
< symtab_hdr
->sh_info
)
4458 /* It's a local symbol. */
4459 Elf_Internal_Sym
*sym
;
4460 Elf_Internal_Shdr
*hdr
;
4462 if (local_syms
== NULL
)
4465 = (Elf_Internal_Sym
*) symtab_hdr
->contents
;
4466 if (local_syms
== NULL
)
4468 = bfd_elf_get_elf_syms (input_bfd
, symtab_hdr
,
4469 symtab_hdr
->sh_info
, 0,
4471 if (local_syms
== NULL
)
4472 goto error_ret_free_internal
;
4475 sym
= local_syms
+ r_indx
;
4476 hdr
= elf_elfsections (input_bfd
)[sym
->st_shndx
];
4477 sym_sec
= hdr
->bfd_section
;
4479 /* This is an undefined symbol. It can never
4483 if (ELF_ST_TYPE (sym
->st_info
) != STT_SECTION
)
4484 sym_value
= sym
->st_value
;
4485 destination
= (sym_value
+ irela
->r_addend
4486 + sym_sec
->output_offset
4487 + sym_sec
->output_section
->vma
);
4488 st_type
= ELF_ST_TYPE (sym
->st_info
);
4490 = bfd_elf_string_from_elf_section (input_bfd
,
4491 symtab_hdr
->sh_link
,
4498 e_indx
= r_indx
- symtab_hdr
->sh_info
;
4499 hash
= ((struct elf_aarch64_link_hash_entry
*)
4500 elf_sym_hashes (input_bfd
)[e_indx
]);
4502 while (hash
->root
.root
.type
== bfd_link_hash_indirect
4503 || hash
->root
.root
.type
== bfd_link_hash_warning
)
4504 hash
= ((struct elf_aarch64_link_hash_entry
*)
4505 hash
->root
.root
.u
.i
.link
);
4507 if (hash
->root
.root
.type
== bfd_link_hash_defined
4508 || hash
->root
.root
.type
== bfd_link_hash_defweak
)
4510 struct elf_aarch64_link_hash_table
*globals
=
4511 elf_aarch64_hash_table (info
);
4512 sym_sec
= hash
->root
.root
.u
.def
.section
;
4513 sym_value
= hash
->root
.root
.u
.def
.value
;
4514 /* For a destination in a shared library,
4515 use the PLT stub as target address to
4516 decide whether a branch stub is
4518 if (globals
->root
.splt
!= NULL
&& hash
!= NULL
4519 && hash
->root
.plt
.offset
!= (bfd_vma
) - 1)
4521 sym_sec
= globals
->root
.splt
;
4522 sym_value
= hash
->root
.plt
.offset
;
4523 if (sym_sec
->output_section
!= NULL
)
4524 destination
= (sym_value
4525 + sym_sec
->output_offset
4527 sym_sec
->output_section
->vma
);
4529 else if (sym_sec
->output_section
!= NULL
)
4530 destination
= (sym_value
+ irela
->r_addend
4531 + sym_sec
->output_offset
4532 + sym_sec
->output_section
->vma
);
4534 else if (hash
->root
.root
.type
== bfd_link_hash_undefined
4535 || (hash
->root
.root
.type
4536 == bfd_link_hash_undefweak
))
4538 /* For a shared library, use the PLT stub as
4539 target address to decide whether a long
4540 branch stub is needed.
4541 For absolute code, they cannot be handled. */
4542 struct elf_aarch64_link_hash_table
*globals
=
4543 elf_aarch64_hash_table (info
);
4545 if (globals
->root
.splt
!= NULL
&& hash
!= NULL
4546 && hash
->root
.plt
.offset
!= (bfd_vma
) - 1)
4548 sym_sec
= globals
->root
.splt
;
4549 sym_value
= hash
->root
.plt
.offset
;
4550 if (sym_sec
->output_section
!= NULL
)
4551 destination
= (sym_value
4552 + sym_sec
->output_offset
4554 sym_sec
->output_section
->vma
);
4561 bfd_set_error (bfd_error_bad_value
);
4562 goto error_ret_free_internal
;
4564 st_type
= ELF_ST_TYPE (hash
->root
.type
);
4565 sym_name
= hash
->root
.root
.root
.string
;
4568 /* Determine what (if any) linker stub is needed. */
4569 stub_type
= aarch64_type_of_stub (section
, irela
, sym_sec
,
4570 st_type
, destination
);
4571 if (stub_type
== aarch64_stub_none
)
4574 /* Support for grouping stub sections. */
4575 id_sec
= htab
->stub_group
[section
->id
].link_sec
;
4577 /* Get the name of this stub. */
4578 stub_name
= elfNN_aarch64_stub_name (id_sec
, sym_sec
, hash
,
4581 goto error_ret_free_internal
;
4584 aarch64_stub_hash_lookup (&htab
->stub_hash_table
,
4585 stub_name
, FALSE
, FALSE
);
4586 if (stub_entry
!= NULL
)
4588 /* The proper stub has already been created. */
4590 /* Always update this stub's target since it may have
4591 changed after layout. */
4592 stub_entry
->target_value
= sym_value
+ irela
->r_addend
;
4596 stub_entry
= _bfd_aarch64_add_stub_entry_in_group
4597 (stub_name
, section
, htab
);
4598 if (stub_entry
== NULL
)
4601 goto error_ret_free_internal
;
4604 stub_entry
->target_value
= sym_value
+ irela
->r_addend
;
4605 stub_entry
->target_section
= sym_sec
;
4606 stub_entry
->stub_type
= stub_type
;
4607 stub_entry
->h
= hash
;
4608 stub_entry
->st_type
= st_type
;
4610 if (sym_name
== NULL
)
4611 sym_name
= "unnamed";
4612 len
= sizeof (STUB_ENTRY_NAME
) + strlen (sym_name
);
4613 stub_entry
->output_name
= bfd_alloc (htab
->stub_bfd
, len
);
4614 if (stub_entry
->output_name
== NULL
)
4617 goto error_ret_free_internal
;
4620 snprintf (stub_entry
->output_name
, len
, STUB_ENTRY_NAME
,
4623 stub_changed
= TRUE
;
4626 /* We're done with the internal relocs, free them. */
4627 if (elf_section_data (section
)->relocs
== NULL
)
4628 free (internal_relocs
);
4635 _bfd_aarch64_resize_stubs (htab
);
4637 /* Ask the linker to do its stuff. */
4638 (*htab
->layout_sections_again
) ();
4639 stub_changed
= FALSE
;
4644 error_ret_free_local
:
4648 /* Build all the stubs associated with the current output file. The
4649 stubs are kept in a hash table attached to the main linker hash
4650 table. We also set up the .plt entries for statically linked PIC
4651 functions here. This function is called via aarch64_elf_finish in the
4655 elfNN_aarch64_build_stubs (struct bfd_link_info
*info
)
4658 struct bfd_hash_table
*table
;
4659 struct elf_aarch64_link_hash_table
*htab
;
4661 htab
= elf_aarch64_hash_table (info
);
4663 for (stub_sec
= htab
->stub_bfd
->sections
;
4664 stub_sec
!= NULL
; stub_sec
= stub_sec
->next
)
4668 /* Ignore non-stub sections. */
4669 if (!strstr (stub_sec
->name
, STUB_SUFFIX
))
4672 /* Allocate memory to hold the linker stubs. */
4673 size
= stub_sec
->size
;
4674 stub_sec
->contents
= bfd_zalloc (htab
->stub_bfd
, size
);
4675 if (stub_sec
->contents
== NULL
&& size
!= 0)
4679 /* Add a branch around the stub section, and a nop, to keep it 8 byte
4680 aligned, as long branch stubs contain a 64-bit address. */
4681 bfd_putl32 (0x14000000 | (size
>> 2), stub_sec
->contents
);
4682 bfd_putl32 (INSN_NOP
, stub_sec
->contents
+ 4);
4683 stub_sec
->size
+= 8;
4686 /* Build the stubs as directed by the stub hash table. */
4687 table
= &htab
->stub_hash_table
;
4688 bfd_hash_traverse (table
, aarch64_build_one_stub
, info
);
4694 /* Add an entry to the code/data map for section SEC. */
4697 elfNN_aarch64_section_map_add (asection
*sec
, char type
, bfd_vma vma
)
4699 struct _aarch64_elf_section_data
*sec_data
=
4700 elf_aarch64_section_data (sec
);
4701 unsigned int newidx
;
4703 if (sec_data
->map
== NULL
)
4705 sec_data
->map
= bfd_malloc (sizeof (elf_aarch64_section_map
));
4706 sec_data
->mapcount
= 0;
4707 sec_data
->mapsize
= 1;
4710 newidx
= sec_data
->mapcount
++;
4712 if (sec_data
->mapcount
> sec_data
->mapsize
)
4714 sec_data
->mapsize
*= 2;
4715 sec_data
->map
= bfd_realloc_or_free
4716 (sec_data
->map
, sec_data
->mapsize
* sizeof (elf_aarch64_section_map
));
4721 sec_data
->map
[newidx
].vma
= vma
;
4722 sec_data
->map
[newidx
].type
= type
;
4727 /* Initialise maps of insn/data for input BFDs. */
4729 bfd_elfNN_aarch64_init_maps (bfd
*abfd
)
4731 Elf_Internal_Sym
*isymbuf
;
4732 Elf_Internal_Shdr
*hdr
;
4733 unsigned int i
, localsyms
;
4735 /* Make sure that we are dealing with an AArch64 elf binary. */
4736 if (!is_aarch64_elf (abfd
))
4739 if ((abfd
->flags
& DYNAMIC
) != 0)
4742 hdr
= &elf_symtab_hdr (abfd
);
4743 localsyms
= hdr
->sh_info
;
4745 /* Obtain a buffer full of symbols for this BFD. The hdr->sh_info field
4746 should contain the number of local symbols, which should come before any
4747 global symbols. Mapping symbols are always local. */
4748 isymbuf
= bfd_elf_get_elf_syms (abfd
, hdr
, localsyms
, 0, NULL
, NULL
, NULL
);
4750 /* No internal symbols read? Skip this BFD. */
4751 if (isymbuf
== NULL
)
4754 for (i
= 0; i
< localsyms
; i
++)
4756 Elf_Internal_Sym
*isym
= &isymbuf
[i
];
4757 asection
*sec
= bfd_section_from_elf_index (abfd
, isym
->st_shndx
);
4760 if (sec
!= NULL
&& ELF_ST_BIND (isym
->st_info
) == STB_LOCAL
)
4762 name
= bfd_elf_string_from_elf_section (abfd
,
4766 if (bfd_is_aarch64_special_symbol_name
4767 (name
, BFD_AARCH64_SPECIAL_SYM_TYPE_MAP
))
4768 elfNN_aarch64_section_map_add (sec
, name
[1], isym
->st_value
);
4774 setup_plt_values (struct bfd_link_info
*link_info
,
4775 aarch64_plt_type plt_type
)
4777 struct elf_aarch64_link_hash_table
*globals
;
4778 globals
= elf_aarch64_hash_table (link_info
);
4780 if (plt_type
== PLT_BTI_PAC
)
4782 globals
->plt0_entry
= elfNN_aarch64_small_plt0_bti_entry
;
4784 /* Only in ET_EXEC we need PLTn with BTI. */
4785 if (bfd_link_pde (link_info
))
4787 globals
->plt_entry_size
= PLT_BTI_PAC_SMALL_ENTRY_SIZE
;
4788 globals
->plt_entry
= elfNN_aarch64_small_plt_bti_pac_entry
;
4792 globals
->plt_entry_size
= PLT_PAC_SMALL_ENTRY_SIZE
;
4793 globals
->plt_entry
= elfNN_aarch64_small_plt_pac_entry
;
4796 else if (plt_type
== PLT_BTI
)
4798 globals
->plt0_entry
= elfNN_aarch64_small_plt0_bti_entry
;
4800 /* Only in ET_EXEC we need PLTn with BTI. */
4801 if (bfd_link_pde (link_info
))
4803 globals
->plt_entry_size
= PLT_BTI_SMALL_ENTRY_SIZE
;
4804 globals
->plt_entry
= elfNN_aarch64_small_plt_bti_entry
;
4807 else if (plt_type
== PLT_PAC
)
4809 globals
->plt_entry_size
= PLT_PAC_SMALL_ENTRY_SIZE
;
4810 globals
->plt_entry
= elfNN_aarch64_small_plt_pac_entry
;
4814 /* Set option values needed during linking. */
4816 bfd_elfNN_aarch64_set_options (struct bfd
*output_bfd
,
4817 struct bfd_link_info
*link_info
,
4819 int no_wchar_warn
, int pic_veneer
,
4820 int fix_erratum_835769
,
4821 erratum_84319_opts fix_erratum_843419
,
4822 int no_apply_dynamic_relocs
,
4823 aarch64_bti_pac_info bp_info
)
4825 struct elf_aarch64_link_hash_table
*globals
;
4827 globals
= elf_aarch64_hash_table (link_info
);
4828 globals
->pic_veneer
= pic_veneer
;
4829 globals
->fix_erratum_835769
= fix_erratum_835769
;
4830 /* If the default options are used, then ERRAT_ADR will be set by default
4831 which will enable the ADRP->ADR workaround for the erratum 843419
4833 globals
->fix_erratum_843419
= fix_erratum_843419
;
4834 globals
->no_apply_dynamic_relocs
= no_apply_dynamic_relocs
;
4836 BFD_ASSERT (is_aarch64_elf (output_bfd
));
4837 elf_aarch64_tdata (output_bfd
)->no_enum_size_warning
= no_enum_warn
;
4838 elf_aarch64_tdata (output_bfd
)->no_wchar_size_warning
= no_wchar_warn
;
4840 switch (bp_info
.bti_type
)
4843 elf_aarch64_tdata (output_bfd
)->no_bti_warn
= 0;
4844 elf_aarch64_tdata (output_bfd
)->gnu_and_prop
4845 |= GNU_PROPERTY_AARCH64_FEATURE_1_BTI
;
4851 elf_aarch64_tdata (output_bfd
)->plt_type
= bp_info
.plt_type
;
4852 setup_plt_values (link_info
, bp_info
.plt_type
);
4856 aarch64_calculate_got_entry_vma (struct elf_link_hash_entry
*h
,
4857 struct elf_aarch64_link_hash_table
4858 *globals
, struct bfd_link_info
*info
,
4859 bfd_vma value
, bfd
*output_bfd
,
4860 bfd_boolean
*unresolved_reloc_p
)
4862 bfd_vma off
= (bfd_vma
) - 1;
4863 asection
*basegot
= globals
->root
.sgot
;
4864 bfd_boolean dyn
= globals
->root
.dynamic_sections_created
;
4868 BFD_ASSERT (basegot
!= NULL
);
4869 off
= h
->got
.offset
;
4870 BFD_ASSERT (off
!= (bfd_vma
) - 1);
4871 if (!WILL_CALL_FINISH_DYNAMIC_SYMBOL (dyn
, bfd_link_pic (info
), h
)
4872 || (bfd_link_pic (info
)
4873 && SYMBOL_REFERENCES_LOCAL (info
, h
))
4874 || (ELF_ST_VISIBILITY (h
->other
)
4875 && h
->root
.type
== bfd_link_hash_undefweak
))
4877 /* This is actually a static link, or it is a -Bsymbolic link
4878 and the symbol is defined locally. We must initialize this
4879 entry in the global offset table. Since the offset must
4880 always be a multiple of 8 (4 in the case of ILP32), we use
4881 the least significant bit to record whether we have
4882 initialized it already.
4883 When doing a dynamic link, we create a .rel(a).got relocation
4884 entry to initialize the value. This is done in the
4885 finish_dynamic_symbol routine. */
4890 bfd_put_NN (output_bfd
, value
, basegot
->contents
+ off
);
4895 *unresolved_reloc_p
= FALSE
;
4897 off
= off
+ basegot
->output_section
->vma
+ basegot
->output_offset
;
4903 /* Change R_TYPE to a more efficient access model where possible,
4904 return the new reloc type. */
4906 static bfd_reloc_code_real_type
4907 aarch64_tls_transition_without_check (bfd_reloc_code_real_type r_type
,
4908 struct elf_link_hash_entry
*h
)
4910 bfd_boolean is_local
= h
== NULL
;
4914 case BFD_RELOC_AARCH64_TLSDESC_ADR_PAGE21
:
4915 case BFD_RELOC_AARCH64_TLSGD_ADR_PAGE21
:
4917 ? BFD_RELOC_AARCH64_TLSLE_MOVW_TPREL_G1
4918 : BFD_RELOC_AARCH64_TLSIE_ADR_GOTTPREL_PAGE21
);
4920 case BFD_RELOC_AARCH64_TLSDESC_ADR_PREL21
:
4922 ? BFD_RELOC_AARCH64_TLSLE_MOVW_TPREL_G0_NC
4925 case BFD_RELOC_AARCH64_TLSDESC_LD_PREL19
:
4927 ? BFD_RELOC_AARCH64_TLSLE_MOVW_TPREL_G1
4928 : BFD_RELOC_AARCH64_TLSIE_LD_GOTTPREL_PREL19
);
4930 case BFD_RELOC_AARCH64_TLSDESC_LDR
:
4932 ? BFD_RELOC_AARCH64_TLSLE_MOVW_TPREL_G0_NC
4933 : BFD_RELOC_AARCH64_NONE
);
4935 case BFD_RELOC_AARCH64_TLSDESC_OFF_G0_NC
:
4937 ? BFD_RELOC_AARCH64_TLSLE_MOVW_TPREL_G1_NC
4938 : BFD_RELOC_AARCH64_TLSIE_MOVW_GOTTPREL_G0_NC
);
4940 case BFD_RELOC_AARCH64_TLSDESC_OFF_G1
:
4942 ? BFD_RELOC_AARCH64_TLSLE_MOVW_TPREL_G2
4943 : BFD_RELOC_AARCH64_TLSIE_MOVW_GOTTPREL_G1
);
4945 case BFD_RELOC_AARCH64_TLSDESC_LDNN_LO12_NC
:
4946 case BFD_RELOC_AARCH64_TLSGD_ADD_LO12_NC
:
4948 ? BFD_RELOC_AARCH64_TLSLE_MOVW_TPREL_G0_NC
4949 : BFD_RELOC_AARCH64_TLSIE_LDNN_GOTTPREL_LO12_NC
);
4951 case BFD_RELOC_AARCH64_TLSIE_ADR_GOTTPREL_PAGE21
:
4952 return is_local
? BFD_RELOC_AARCH64_TLSLE_MOVW_TPREL_G1
: r_type
;
4954 case BFD_RELOC_AARCH64_TLSIE_LDNN_GOTTPREL_LO12_NC
:
4955 return is_local
? BFD_RELOC_AARCH64_TLSLE_MOVW_TPREL_G0_NC
: r_type
;
4957 case BFD_RELOC_AARCH64_TLSIE_LD_GOTTPREL_PREL19
:
4960 case BFD_RELOC_AARCH64_TLSGD_ADR_PREL21
:
4962 ? BFD_RELOC_AARCH64_TLSLE_ADD_TPREL_HI12
4963 : BFD_RELOC_AARCH64_TLSIE_LD_GOTTPREL_PREL19
);
4965 case BFD_RELOC_AARCH64_TLSDESC_ADD
:
4966 case BFD_RELOC_AARCH64_TLSDESC_ADD_LO12
:
4967 case BFD_RELOC_AARCH64_TLSDESC_CALL
:
4968 /* Instructions with these relocations will become NOPs. */
4969 return BFD_RELOC_AARCH64_NONE
;
4971 case BFD_RELOC_AARCH64_TLSLD_ADD_LO12_NC
:
4972 case BFD_RELOC_AARCH64_TLSLD_ADR_PAGE21
:
4973 case BFD_RELOC_AARCH64_TLSLD_ADR_PREL21
:
4974 return is_local
? BFD_RELOC_AARCH64_NONE
: r_type
;
4977 case BFD_RELOC_AARCH64_TLSGD_MOVW_G0_NC
:
4979 ? BFD_RELOC_AARCH64_TLSLE_MOVW_TPREL_G1_NC
4980 : BFD_RELOC_AARCH64_TLSIE_MOVW_GOTTPREL_G0_NC
;
4982 case BFD_RELOC_AARCH64_TLSGD_MOVW_G1
:
4984 ? BFD_RELOC_AARCH64_TLSLE_MOVW_TPREL_G2
4985 : BFD_RELOC_AARCH64_TLSIE_MOVW_GOTTPREL_G1
;
4996 aarch64_reloc_got_type (bfd_reloc_code_real_type r_type
)
5000 case BFD_RELOC_AARCH64_ADR_GOT_PAGE
:
5001 case BFD_RELOC_AARCH64_GOT_LD_PREL19
:
5002 case BFD_RELOC_AARCH64_LD32_GOTPAGE_LO14
:
5003 case BFD_RELOC_AARCH64_LD32_GOT_LO12_NC
:
5004 case BFD_RELOC_AARCH64_LD64_GOTOFF_LO15
:
5005 case BFD_RELOC_AARCH64_LD64_GOTPAGE_LO15
:
5006 case BFD_RELOC_AARCH64_LD64_GOT_LO12_NC
:
5007 case BFD_RELOC_AARCH64_MOVW_GOTOFF_G0_NC
:
5008 case BFD_RELOC_AARCH64_MOVW_GOTOFF_G1
:
5011 case BFD_RELOC_AARCH64_TLSGD_ADD_LO12_NC
:
5012 case BFD_RELOC_AARCH64_TLSGD_ADR_PAGE21
:
5013 case BFD_RELOC_AARCH64_TLSGD_ADR_PREL21
:
5014 case BFD_RELOC_AARCH64_TLSGD_MOVW_G0_NC
:
5015 case BFD_RELOC_AARCH64_TLSGD_MOVW_G1
:
5016 case BFD_RELOC_AARCH64_TLSLD_ADD_LO12_NC
:
5017 case BFD_RELOC_AARCH64_TLSLD_ADR_PAGE21
:
5018 case BFD_RELOC_AARCH64_TLSLD_ADR_PREL21
:
5021 case BFD_RELOC_AARCH64_TLSDESC_ADD
:
5022 case BFD_RELOC_AARCH64_TLSDESC_ADD_LO12
:
5023 case BFD_RELOC_AARCH64_TLSDESC_ADR_PAGE21
:
5024 case BFD_RELOC_AARCH64_TLSDESC_ADR_PREL21
:
5025 case BFD_RELOC_AARCH64_TLSDESC_CALL
:
5026 case BFD_RELOC_AARCH64_TLSDESC_LD32_LO12_NC
:
5027 case BFD_RELOC_AARCH64_TLSDESC_LD64_LO12
:
5028 case BFD_RELOC_AARCH64_TLSDESC_LD_PREL19
:
5029 case BFD_RELOC_AARCH64_TLSDESC_LDR
:
5030 case BFD_RELOC_AARCH64_TLSDESC_OFF_G0_NC
:
5031 case BFD_RELOC_AARCH64_TLSDESC_OFF_G1
:
5032 return GOT_TLSDESC_GD
;
5034 case BFD_RELOC_AARCH64_TLSIE_ADR_GOTTPREL_PAGE21
:
5035 case BFD_RELOC_AARCH64_TLSIE_LD32_GOTTPREL_LO12_NC
:
5036 case BFD_RELOC_AARCH64_TLSIE_LD64_GOTTPREL_LO12_NC
:
5037 case BFD_RELOC_AARCH64_TLSIE_LD_GOTTPREL_PREL19
:
5038 case BFD_RELOC_AARCH64_TLSIE_MOVW_GOTTPREL_G0_NC
:
5039 case BFD_RELOC_AARCH64_TLSIE_MOVW_GOTTPREL_G1
:
5049 aarch64_can_relax_tls (bfd
*input_bfd
,
5050 struct bfd_link_info
*info
,
5051 bfd_reloc_code_real_type r_type
,
5052 struct elf_link_hash_entry
*h
,
5053 unsigned long r_symndx
)
5055 unsigned int symbol_got_type
;
5056 unsigned int reloc_got_type
;
5058 if (! IS_AARCH64_TLS_RELAX_RELOC (r_type
))
5061 symbol_got_type
= elfNN_aarch64_symbol_got_type (h
, input_bfd
, r_symndx
);
5062 reloc_got_type
= aarch64_reloc_got_type (r_type
);
5064 if (symbol_got_type
== GOT_TLS_IE
&& GOT_TLS_GD_ANY_P (reloc_got_type
))
5067 if (!bfd_link_executable (info
))
5070 if (h
&& h
->root
.type
== bfd_link_hash_undefweak
)
5076 /* Given the relocation code R_TYPE, return the relaxed bfd reloc
5079 static bfd_reloc_code_real_type
5080 aarch64_tls_transition (bfd
*input_bfd
,
5081 struct bfd_link_info
*info
,
5082 unsigned int r_type
,
5083 struct elf_link_hash_entry
*h
,
5084 unsigned long r_symndx
)
5086 bfd_reloc_code_real_type bfd_r_type
5087 = elfNN_aarch64_bfd_reloc_from_type (input_bfd
, r_type
);
5089 if (! aarch64_can_relax_tls (input_bfd
, info
, bfd_r_type
, h
, r_symndx
))
5092 return aarch64_tls_transition_without_check (bfd_r_type
, h
);
5095 /* Return the base VMA address which should be subtracted from real addresses
5096 when resolving R_AARCH64_TLS_DTPREL relocation. */
5099 dtpoff_base (struct bfd_link_info
*info
)
5101 /* If tls_sec is NULL, we should have signalled an error already. */
5102 BFD_ASSERT (elf_hash_table (info
)->tls_sec
!= NULL
);
5103 return elf_hash_table (info
)->tls_sec
->vma
;
5106 /* Return the base VMA address which should be subtracted from real addresses
5107 when resolving R_AARCH64_TLS_GOTTPREL64 relocations. */
5110 tpoff_base (struct bfd_link_info
*info
)
5112 struct elf_link_hash_table
*htab
= elf_hash_table (info
);
5114 /* If tls_sec is NULL, we should have signalled an error already. */
5115 BFD_ASSERT (htab
->tls_sec
!= NULL
);
5117 bfd_vma base
= align_power ((bfd_vma
) TCB_SIZE
,
5118 htab
->tls_sec
->alignment_power
);
5119 return htab
->tls_sec
->vma
- base
;
5123 symbol_got_offset_ref (bfd
*input_bfd
, struct elf_link_hash_entry
*h
,
5124 unsigned long r_symndx
)
5126 /* Calculate the address of the GOT entry for symbol
5127 referred to in h. */
5129 return &h
->got
.offset
;
5133 struct elf_aarch64_local_symbol
*l
;
5135 l
= elf_aarch64_locals (input_bfd
);
5136 return &l
[r_symndx
].got_offset
;
5141 symbol_got_offset_mark (bfd
*input_bfd
, struct elf_link_hash_entry
*h
,
5142 unsigned long r_symndx
)
5145 p
= symbol_got_offset_ref (input_bfd
, h
, r_symndx
);
5150 symbol_got_offset_mark_p (bfd
*input_bfd
, struct elf_link_hash_entry
*h
,
5151 unsigned long r_symndx
)
5154 value
= * symbol_got_offset_ref (input_bfd
, h
, r_symndx
);
5159 symbol_got_offset (bfd
*input_bfd
, struct elf_link_hash_entry
*h
,
5160 unsigned long r_symndx
)
5163 value
= * symbol_got_offset_ref (input_bfd
, h
, r_symndx
);
5169 symbol_tlsdesc_got_offset_ref (bfd
*input_bfd
, struct elf_link_hash_entry
*h
,
5170 unsigned long r_symndx
)
5172 /* Calculate the address of the GOT entry for symbol
5173 referred to in h. */
5176 struct elf_aarch64_link_hash_entry
*eh
;
5177 eh
= (struct elf_aarch64_link_hash_entry
*) h
;
5178 return &eh
->tlsdesc_got_jump_table_offset
;
5183 struct elf_aarch64_local_symbol
*l
;
5185 l
= elf_aarch64_locals (input_bfd
);
5186 return &l
[r_symndx
].tlsdesc_got_jump_table_offset
;
5191 symbol_tlsdesc_got_offset_mark (bfd
*input_bfd
, struct elf_link_hash_entry
*h
,
5192 unsigned long r_symndx
)
5195 p
= symbol_tlsdesc_got_offset_ref (input_bfd
, h
, r_symndx
);
5200 symbol_tlsdesc_got_offset_mark_p (bfd
*input_bfd
,
5201 struct elf_link_hash_entry
*h
,
5202 unsigned long r_symndx
)
5205 value
= * symbol_tlsdesc_got_offset_ref (input_bfd
, h
, r_symndx
);
5210 symbol_tlsdesc_got_offset (bfd
*input_bfd
, struct elf_link_hash_entry
*h
,
5211 unsigned long r_symndx
)
5214 value
= * symbol_tlsdesc_got_offset_ref (input_bfd
, h
, r_symndx
);
5219 /* Data for make_branch_to_erratum_835769_stub(). */
5221 struct erratum_835769_branch_to_stub_data
5223 struct bfd_link_info
*info
;
5224 asection
*output_section
;
5228 /* Helper to insert branches to erratum 835769 stubs in the right
5229 places for a particular section. */
5232 make_branch_to_erratum_835769_stub (struct bfd_hash_entry
*gen_entry
,
5235 struct elf_aarch64_stub_hash_entry
*stub_entry
;
5236 struct erratum_835769_branch_to_stub_data
*data
;
5238 unsigned long branch_insn
= 0;
5239 bfd_vma veneered_insn_loc
, veneer_entry_loc
;
5240 bfd_signed_vma branch_offset
;
5241 unsigned int target
;
5244 stub_entry
= (struct elf_aarch64_stub_hash_entry
*) gen_entry
;
5245 data
= (struct erratum_835769_branch_to_stub_data
*) in_arg
;
5247 if (stub_entry
->target_section
!= data
->output_section
5248 || stub_entry
->stub_type
!= aarch64_stub_erratum_835769_veneer
)
5251 contents
= data
->contents
;
5252 veneered_insn_loc
= stub_entry
->target_section
->output_section
->vma
5253 + stub_entry
->target_section
->output_offset
5254 + stub_entry
->target_value
;
5255 veneer_entry_loc
= stub_entry
->stub_sec
->output_section
->vma
5256 + stub_entry
->stub_sec
->output_offset
5257 + stub_entry
->stub_offset
;
5258 branch_offset
= veneer_entry_loc
- veneered_insn_loc
;
5260 abfd
= stub_entry
->target_section
->owner
;
5261 if (!aarch64_valid_branch_p (veneer_entry_loc
, veneered_insn_loc
))
5263 (_("%pB: error: erratum 835769 stub out "
5264 "of range (input file too large)"), abfd
);
5266 target
= stub_entry
->target_value
;
5267 branch_insn
= 0x14000000;
5268 branch_offset
>>= 2;
5269 branch_offset
&= 0x3ffffff;
5270 branch_insn
|= branch_offset
;
5271 bfd_putl32 (branch_insn
, &contents
[target
]);
5278 _bfd_aarch64_erratum_843419_branch_to_stub (struct bfd_hash_entry
*gen_entry
,
5281 struct elf_aarch64_stub_hash_entry
*stub_entry
5282 = (struct elf_aarch64_stub_hash_entry
*) gen_entry
;
5283 struct erratum_835769_branch_to_stub_data
*data
5284 = (struct erratum_835769_branch_to_stub_data
*) in_arg
;
5285 struct bfd_link_info
*info
;
5286 struct elf_aarch64_link_hash_table
*htab
;
5294 contents
= data
->contents
;
5295 section
= data
->output_section
;
5297 htab
= elf_aarch64_hash_table (info
);
5299 if (stub_entry
->target_section
!= section
5300 || stub_entry
->stub_type
!= aarch64_stub_erratum_843419_veneer
)
5303 BFD_ASSERT (((htab
->fix_erratum_843419
& ERRAT_ADRP
) && stub_entry
->stub_sec
)
5304 || (htab
->fix_erratum_843419
& ERRAT_ADR
));
5306 /* Only update the stub section if we have one. We should always have one if
5307 we're allowed to use the ADRP errata workaround, otherwise it is not
5309 if (stub_entry
->stub_sec
)
5311 insn
= bfd_getl32 (contents
+ stub_entry
->target_value
);
5313 stub_entry
->stub_sec
->contents
+ stub_entry
->stub_offset
);
5316 place
= (section
->output_section
->vma
+ section
->output_offset
5317 + stub_entry
->adrp_offset
);
5318 insn
= bfd_getl32 (contents
+ stub_entry
->adrp_offset
);
5320 if (!_bfd_aarch64_adrp_p (insn
))
5323 bfd_signed_vma imm
=
5324 (_bfd_aarch64_sign_extend
5325 ((bfd_vma
) _bfd_aarch64_decode_adrp_imm (insn
) << 12, 33)
5328 if ((htab
->fix_erratum_843419
& ERRAT_ADR
)
5329 && (imm
>= AARCH64_MIN_ADRP_IMM
&& imm
<= AARCH64_MAX_ADRP_IMM
))
5331 insn
= (_bfd_aarch64_reencode_adr_imm (AARCH64_ADR_OP
, imm
)
5332 | AARCH64_RT (insn
));
5333 bfd_putl32 (insn
, contents
+ stub_entry
->adrp_offset
);
5334 /* Stub is not needed, don't map it out. */
5335 stub_entry
->stub_type
= aarch64_stub_none
;
5337 else if (htab
->fix_erratum_843419
& ERRAT_ADRP
)
5339 bfd_vma veneered_insn_loc
;
5340 bfd_vma veneer_entry_loc
;
5341 bfd_signed_vma branch_offset
;
5342 uint32_t branch_insn
;
5344 veneered_insn_loc
= stub_entry
->target_section
->output_section
->vma
5345 + stub_entry
->target_section
->output_offset
5346 + stub_entry
->target_value
;
5347 veneer_entry_loc
= stub_entry
->stub_sec
->output_section
->vma
5348 + stub_entry
->stub_sec
->output_offset
5349 + stub_entry
->stub_offset
;
5350 branch_offset
= veneer_entry_loc
- veneered_insn_loc
;
5352 abfd
= stub_entry
->target_section
->owner
;
5353 if (!aarch64_valid_branch_p (veneer_entry_loc
, veneered_insn_loc
))
5355 (_("%pB: error: erratum 843419 stub out "
5356 "of range (input file too large)"), abfd
);
5358 branch_insn
= 0x14000000;
5359 branch_offset
>>= 2;
5360 branch_offset
&= 0x3ffffff;
5361 branch_insn
|= branch_offset
;
5362 bfd_putl32 (branch_insn
, contents
+ stub_entry
->target_value
);
5366 abfd
= stub_entry
->target_section
->owner
;
5368 (_("%pB: error: erratum 843419 immediate 0x%" BFD_VMA_FMT
"x "
5369 "out of range for ADR (input file too large) and "
5370 "--fix-cortex-a53-843419=adr used. Run the linker with "
5371 "--fix-cortex-a53-843419=full instead"), abfd
, imm
);
5372 bfd_set_error (bfd_error_bad_value
);
5373 /* This function is called inside a hashtable traversal and the error
5374 handlers called above turn into non-fatal errors. Which means this
5375 case ld returns an exit code 0 and also produces a broken object file.
5376 To prevent this, issue a hard abort. */
5384 elfNN_aarch64_write_section (bfd
*output_bfd ATTRIBUTE_UNUSED
,
5385 struct bfd_link_info
*link_info
,
5390 struct elf_aarch64_link_hash_table
*globals
=
5391 elf_aarch64_hash_table (link_info
);
5393 if (globals
== NULL
)
5396 /* Fix code to point to erratum 835769 stubs. */
5397 if (globals
->fix_erratum_835769
)
5399 struct erratum_835769_branch_to_stub_data data
;
5401 data
.info
= link_info
;
5402 data
.output_section
= sec
;
5403 data
.contents
= contents
;
5404 bfd_hash_traverse (&globals
->stub_hash_table
,
5405 make_branch_to_erratum_835769_stub
, &data
);
5408 if (globals
->fix_erratum_843419
)
5410 struct erratum_835769_branch_to_stub_data data
;
5412 data
.info
= link_info
;
5413 data
.output_section
= sec
;
5414 data
.contents
= contents
;
5415 bfd_hash_traverse (&globals
->stub_hash_table
,
5416 _bfd_aarch64_erratum_843419_branch_to_stub
, &data
);
5422 /* Return TRUE if RELOC is a relocation against the base of GOT table. */
5425 aarch64_relocation_aginst_gp_p (bfd_reloc_code_real_type reloc
)
5427 return (reloc
== BFD_RELOC_AARCH64_LD32_GOTPAGE_LO14
5428 || reloc
== BFD_RELOC_AARCH64_LD64_GOTPAGE_LO15
5429 || reloc
== BFD_RELOC_AARCH64_LD64_GOTOFF_LO15
5430 || reloc
== BFD_RELOC_AARCH64_MOVW_GOTOFF_G0_NC
5431 || reloc
== BFD_RELOC_AARCH64_MOVW_GOTOFF_G1
);
5434 /* Perform a relocation as part of a final link. The input relocation type
5435 should be TLS relaxed. */
5437 static bfd_reloc_status_type
5438 elfNN_aarch64_final_link_relocate (reloc_howto_type
*howto
,
5441 asection
*input_section
,
5443 Elf_Internal_Rela
*rel
,
5445 struct bfd_link_info
*info
,
5447 struct elf_link_hash_entry
*h
,
5448 bfd_boolean
*unresolved_reloc_p
,
5449 bfd_boolean save_addend
,
5450 bfd_vma
*saved_addend
,
5451 Elf_Internal_Sym
*sym
)
5453 Elf_Internal_Shdr
*symtab_hdr
;
5454 unsigned int r_type
= howto
->type
;
5455 bfd_reloc_code_real_type bfd_r_type
5456 = elfNN_aarch64_bfd_reloc_from_howto (howto
);
5457 unsigned long r_symndx
;
5458 bfd_byte
*hit_data
= contents
+ rel
->r_offset
;
5459 bfd_vma place
, off
, got_entry_addr
= 0;
5460 bfd_signed_vma signed_addend
;
5461 struct elf_aarch64_link_hash_table
*globals
;
5462 bfd_boolean weak_undef_p
;
5463 bfd_boolean relative_reloc
;
5465 bfd_vma orig_value
= value
;
5466 bfd_boolean resolved_to_zero
;
5467 bfd_boolean abs_symbol_p
;
5469 globals
= elf_aarch64_hash_table (info
);
5471 symtab_hdr
= &elf_symtab_hdr (input_bfd
);
5473 BFD_ASSERT (is_aarch64_elf (input_bfd
));
5475 r_symndx
= ELFNN_R_SYM (rel
->r_info
);
5477 place
= input_section
->output_section
->vma
5478 + input_section
->output_offset
+ rel
->r_offset
;
5480 /* Get addend, accumulating the addend for consecutive relocs
5481 which refer to the same offset. */
5482 signed_addend
= saved_addend
? *saved_addend
: 0;
5483 signed_addend
+= rel
->r_addend
;
5485 weak_undef_p
= (h
? h
->root
.type
== bfd_link_hash_undefweak
5486 : bfd_is_und_section (sym_sec
));
5487 abs_symbol_p
= h
!= NULL
&& bfd_is_abs_symbol (&h
->root
);
5490 /* Since STT_GNU_IFUNC symbol must go through PLT, we handle
5491 it here if it is defined in a non-shared object. */
5493 && h
->type
== STT_GNU_IFUNC
5500 if ((input_section
->flags
& SEC_ALLOC
) == 0)
5502 /* If this is a SHT_NOTE section without SHF_ALLOC, treat
5503 STT_GNU_IFUNC symbol as STT_FUNC. */
5504 if (elf_section_type (input_section
) == SHT_NOTE
)
5507 /* Dynamic relocs are not propagated for SEC_DEBUGGING
5508 sections because such sections are not SEC_ALLOC and
5509 thus ld.so will not process them. */
5510 if ((input_section
->flags
& SEC_DEBUGGING
) != 0)
5511 return bfd_reloc_ok
;
5513 if (h
->root
.root
.string
)
5514 name
= h
->root
.root
.string
;
5516 name
= bfd_elf_sym_name (input_bfd
, symtab_hdr
, sym
, NULL
);
5518 /* xgettext:c-format */
5519 (_("%pB(%pA+%#" PRIx64
"): "
5520 "unresolvable %s relocation against symbol `%s'"),
5521 input_bfd
, input_section
, (uint64_t) rel
->r_offset
,
5523 bfd_set_error (bfd_error_bad_value
);
5524 return bfd_reloc_notsupported
;
5526 else if (h
->plt
.offset
== (bfd_vma
) -1)
5527 goto bad_ifunc_reloc
;
5529 /* STT_GNU_IFUNC symbol must go through PLT. */
5530 plt
= globals
->root
.splt
? globals
->root
.splt
: globals
->root
.iplt
;
5531 value
= (plt
->output_section
->vma
+ plt
->output_offset
+ h
->plt
.offset
);
5537 if (h
->root
.root
.string
)
5538 name
= h
->root
.root
.string
;
5540 name
= bfd_elf_sym_name (input_bfd
, symtab_hdr
, sym
,
5543 /* xgettext:c-format */
5544 (_("%pB: relocation %s against STT_GNU_IFUNC "
5545 "symbol `%s' isn't handled by %s"), input_bfd
,
5546 howto
->name
, name
, __FUNCTION__
);
5547 bfd_set_error (bfd_error_bad_value
);
5548 return bfd_reloc_notsupported
;
5550 case BFD_RELOC_AARCH64_NN
:
5551 if (rel
->r_addend
!= 0)
5553 if (h
->root
.root
.string
)
5554 name
= h
->root
.root
.string
;
5556 name
= bfd_elf_sym_name (input_bfd
, symtab_hdr
,
5559 /* xgettext:c-format */
5560 (_("%pB: relocation %s against STT_GNU_IFUNC "
5561 "symbol `%s' has non-zero addend: %" PRId64
),
5562 input_bfd
, howto
->name
, name
, (int64_t) rel
->r_addend
);
5563 bfd_set_error (bfd_error_bad_value
);
5564 return bfd_reloc_notsupported
;
5567 /* Generate dynamic relocation only when there is a
5568 non-GOT reference in a shared object. */
5569 if (bfd_link_pic (info
) && h
->non_got_ref
)
5571 Elf_Internal_Rela outrel
;
5574 /* Need a dynamic relocation to get the real function
5576 outrel
.r_offset
= _bfd_elf_section_offset (output_bfd
,
5580 if (outrel
.r_offset
== (bfd_vma
) -1
5581 || outrel
.r_offset
== (bfd_vma
) -2)
5584 outrel
.r_offset
+= (input_section
->output_section
->vma
5585 + input_section
->output_offset
);
5587 if (h
->dynindx
== -1
5589 || bfd_link_executable (info
))
5591 /* This symbol is resolved locally. */
5592 outrel
.r_info
= ELFNN_R_INFO (0, AARCH64_R (IRELATIVE
));
5593 outrel
.r_addend
= (h
->root
.u
.def
.value
5594 + h
->root
.u
.def
.section
->output_section
->vma
5595 + h
->root
.u
.def
.section
->output_offset
);
5599 outrel
.r_info
= ELFNN_R_INFO (h
->dynindx
, r_type
);
5600 outrel
.r_addend
= 0;
5603 sreloc
= globals
->root
.irelifunc
;
5604 elf_append_rela (output_bfd
, sreloc
, &outrel
);
5606 /* If this reloc is against an external symbol, we
5607 do not want to fiddle with the addend. Otherwise,
5608 we need to include the symbol value so that it
5609 becomes an addend for the dynamic reloc. For an
5610 internal symbol, we have updated addend. */
5611 return bfd_reloc_ok
;
5614 case BFD_RELOC_AARCH64_CALL26
:
5615 case BFD_RELOC_AARCH64_JUMP26
:
5616 value
= _bfd_aarch64_elf_resolve_relocation (input_bfd
, bfd_r_type
,
5620 return _bfd_aarch64_elf_put_addend (input_bfd
, hit_data
, bfd_r_type
,
5622 case BFD_RELOC_AARCH64_ADR_GOT_PAGE
:
5623 case BFD_RELOC_AARCH64_GOT_LD_PREL19
:
5624 case BFD_RELOC_AARCH64_LD32_GOTPAGE_LO14
:
5625 case BFD_RELOC_AARCH64_LD32_GOT_LO12_NC
:
5626 case BFD_RELOC_AARCH64_LD64_GOTPAGE_LO15
:
5627 case BFD_RELOC_AARCH64_MOVW_GOTOFF_G0_NC
:
5628 case BFD_RELOC_AARCH64_MOVW_GOTOFF_G1
:
5629 case BFD_RELOC_AARCH64_LD64_GOTOFF_LO15
:
5630 case BFD_RELOC_AARCH64_LD64_GOT_LO12_NC
:
5631 base_got
= globals
->root
.sgot
;
5632 off
= h
->got
.offset
;
5634 if (base_got
== NULL
)
5637 if (off
== (bfd_vma
) -1)
5641 /* We can't use h->got.offset here to save state, or
5642 even just remember the offset, as finish_dynamic_symbol
5643 would use that as offset into .got. */
5645 if (globals
->root
.splt
!= NULL
)
5647 plt_index
= ((h
->plt
.offset
- globals
->plt_header_size
) /
5648 globals
->plt_entry_size
);
5649 off
= (plt_index
+ 3) * GOT_ENTRY_SIZE
;
5650 base_got
= globals
->root
.sgotplt
;
5654 plt_index
= h
->plt
.offset
/ globals
->plt_entry_size
;
5655 off
= plt_index
* GOT_ENTRY_SIZE
;
5656 base_got
= globals
->root
.igotplt
;
5659 if (h
->dynindx
== -1
5663 /* This references the local definition. We must
5664 initialize this entry in the global offset table.
5665 Since the offset must always be a multiple of 8,
5666 we use the least significant bit to record
5667 whether we have initialized it already.
5669 When doing a dynamic link, we create a .rela.got
5670 relocation entry to initialize the value. This
5671 is done in the finish_dynamic_symbol routine. */
5676 bfd_put_NN (output_bfd
, value
,
5677 base_got
->contents
+ off
);
5678 /* Note that this is harmless as -1 | 1 still is -1. */
5682 value
= (base_got
->output_section
->vma
5683 + base_got
->output_offset
+ off
);
5686 value
= aarch64_calculate_got_entry_vma (h
, globals
, info
,
5688 unresolved_reloc_p
);
5690 if (aarch64_relocation_aginst_gp_p (bfd_r_type
))
5691 addend
= (globals
->root
.sgot
->output_section
->vma
5692 + globals
->root
.sgot
->output_offset
);
5694 value
= _bfd_aarch64_elf_resolve_relocation (input_bfd
, bfd_r_type
,
5696 addend
, weak_undef_p
);
5697 return _bfd_aarch64_elf_put_addend (input_bfd
, hit_data
, bfd_r_type
, howto
, value
);
5698 case BFD_RELOC_AARCH64_ADD_LO12
:
5699 case BFD_RELOC_AARCH64_ADR_HI21_PCREL
:
5705 resolved_to_zero
= (h
!= NULL
5706 && UNDEFWEAK_NO_DYNAMIC_RELOC (info
, h
));
5710 case BFD_RELOC_AARCH64_NONE
:
5711 case BFD_RELOC_AARCH64_TLSDESC_ADD
:
5712 case BFD_RELOC_AARCH64_TLSDESC_CALL
:
5713 case BFD_RELOC_AARCH64_TLSDESC_LDR
:
5714 *unresolved_reloc_p
= FALSE
;
5715 return bfd_reloc_ok
;
5717 case BFD_RELOC_AARCH64_NN
:
5719 /* When generating a shared object or relocatable executable, these
5720 relocations are copied into the output file to be resolved at
5722 if (((bfd_link_pic (info
)
5723 || globals
->root
.is_relocatable_executable
)
5724 && (input_section
->flags
& SEC_ALLOC
)
5726 || (ELF_ST_VISIBILITY (h
->other
) == STV_DEFAULT
5727 && !resolved_to_zero
)
5728 || h
->root
.type
!= bfd_link_hash_undefweak
))
5729 /* Or we are creating an executable, we may need to keep relocations
5730 for symbols satisfied by a dynamic library if we manage to avoid
5731 copy relocs for the symbol. */
5732 || (ELIMINATE_COPY_RELOCS
5733 && !bfd_link_pic (info
)
5735 && (input_section
->flags
& SEC_ALLOC
)
5740 || h
->root
.type
== bfd_link_hash_undefweak
5741 || h
->root
.type
== bfd_link_hash_undefined
)))
5743 Elf_Internal_Rela outrel
;
5745 bfd_boolean skip
, relocate
;
5748 *unresolved_reloc_p
= FALSE
;
5753 outrel
.r_addend
= signed_addend
;
5755 _bfd_elf_section_offset (output_bfd
, info
, input_section
,
5757 if (outrel
.r_offset
== (bfd_vma
) - 1)
5759 else if (outrel
.r_offset
== (bfd_vma
) - 2)
5764 else if (abs_symbol_p
)
5766 /* Local absolute symbol. */
5767 skip
= (h
->forced_local
|| (h
->dynindx
== -1));
5771 outrel
.r_offset
+= (input_section
->output_section
->vma
5772 + input_section
->output_offset
);
5775 memset (&outrel
, 0, sizeof outrel
);
5778 && (!bfd_link_pic (info
)
5779 || !(bfd_link_pie (info
) || SYMBOLIC_BIND (info
, h
))
5780 || !h
->def_regular
))
5781 outrel
.r_info
= ELFNN_R_INFO (h
->dynindx
, r_type
);
5786 /* On SVR4-ish systems, the dynamic loader cannot
5787 relocate the text and data segments independently,
5788 so the symbol does not matter. */
5790 relocate
= globals
->no_apply_dynamic_relocs
? FALSE
: TRUE
;
5791 outrel
.r_info
= ELFNN_R_INFO (symbol
, AARCH64_R (RELATIVE
));
5792 outrel
.r_addend
+= value
;
5795 sreloc
= elf_section_data (input_section
)->sreloc
;
5796 if (sreloc
== NULL
|| sreloc
->contents
== NULL
)
5797 return bfd_reloc_notsupported
;
5799 loc
= sreloc
->contents
+ sreloc
->reloc_count
++ * RELOC_SIZE (globals
);
5800 bfd_elfNN_swap_reloca_out (output_bfd
, &outrel
, loc
);
5802 if (sreloc
->reloc_count
* RELOC_SIZE (globals
) > sreloc
->size
)
5804 /* Sanity to check that we have previously allocated
5805 sufficient space in the relocation section for the
5806 number of relocations we actually want to emit. */
5810 /* If this reloc is against an external symbol, we do not want to
5811 fiddle with the addend. Otherwise, we need to include the symbol
5812 value so that it becomes an addend for the dynamic reloc. */
5814 return bfd_reloc_ok
;
5816 return _bfd_final_link_relocate (howto
, input_bfd
, input_section
,
5817 contents
, rel
->r_offset
, value
,
5821 value
+= signed_addend
;
5824 case BFD_RELOC_AARCH64_CALL26
:
5825 case BFD_RELOC_AARCH64_JUMP26
:
5827 asection
*splt
= globals
->root
.splt
;
5828 bfd_boolean via_plt_p
=
5829 splt
!= NULL
&& h
!= NULL
&& h
->plt
.offset
!= (bfd_vma
) - 1;
5831 /* A call to an undefined weak symbol is converted to a jump to
5832 the next instruction unless a PLT entry will be created.
5833 The jump to the next instruction is optimized as a NOP.
5834 Do the same for local undefined symbols. */
5835 if (weak_undef_p
&& ! via_plt_p
)
5837 bfd_putl32 (INSN_NOP
, hit_data
);
5838 return bfd_reloc_ok
;
5841 /* If the call goes through a PLT entry, make sure to
5842 check distance to the right destination address. */
5844 value
= (splt
->output_section
->vma
5845 + splt
->output_offset
+ h
->plt
.offset
);
5847 /* Check if a stub has to be inserted because the destination
5849 struct elf_aarch64_stub_hash_entry
*stub_entry
= NULL
;
5851 /* If the branch destination is directed to plt stub, "value" will be
5852 the final destination, otherwise we should plus signed_addend, it may
5853 contain non-zero value, for example call to local function symbol
5854 which are turned into "sec_sym + sec_off", and sec_off is kept in
5856 if (! aarch64_valid_branch_p (via_plt_p
? value
: value
+ signed_addend
,
5858 /* The target is out of reach, so redirect the branch to
5859 the local stub for this function. */
5860 stub_entry
= elfNN_aarch64_get_stub_entry (input_section
, sym_sec
, h
,
5862 if (stub_entry
!= NULL
)
5864 value
= (stub_entry
->stub_offset
5865 + stub_entry
->stub_sec
->output_offset
5866 + stub_entry
->stub_sec
->output_section
->vma
);
5868 /* We have redirected the destination to stub entry address,
5869 so ignore any addend record in the original rela entry. */
5873 value
= _bfd_aarch64_elf_resolve_relocation (input_bfd
, bfd_r_type
,
5875 signed_addend
, weak_undef_p
);
5876 *unresolved_reloc_p
= FALSE
;
5879 case BFD_RELOC_AARCH64_16_PCREL
:
5880 case BFD_RELOC_AARCH64_32_PCREL
:
5881 case BFD_RELOC_AARCH64_64_PCREL
:
5882 case BFD_RELOC_AARCH64_ADR_HI21_NC_PCREL
:
5883 case BFD_RELOC_AARCH64_ADR_HI21_PCREL
:
5884 case BFD_RELOC_AARCH64_ADR_LO21_PCREL
:
5885 case BFD_RELOC_AARCH64_LD_LO19_PCREL
:
5886 case BFD_RELOC_AARCH64_MOVW_PREL_G0
:
5887 case BFD_RELOC_AARCH64_MOVW_PREL_G0_NC
:
5888 case BFD_RELOC_AARCH64_MOVW_PREL_G1
:
5889 case BFD_RELOC_AARCH64_MOVW_PREL_G1_NC
:
5890 case BFD_RELOC_AARCH64_MOVW_PREL_G2
:
5891 case BFD_RELOC_AARCH64_MOVW_PREL_G2_NC
:
5892 case BFD_RELOC_AARCH64_MOVW_PREL_G3
:
5893 if (bfd_link_pic (info
)
5894 && (input_section
->flags
& SEC_ALLOC
) != 0
5895 && (input_section
->flags
& SEC_READONLY
) != 0
5896 && !SYMBOL_REFERENCES_LOCAL (info
, h
))
5898 int howto_index
= bfd_r_type
- BFD_RELOC_AARCH64_RELOC_START
;
5901 /* xgettext:c-format */
5902 (_("%pB: relocation %s against symbol `%s' which may bind "
5903 "externally can not be used when making a shared object; "
5904 "recompile with -fPIC"),
5905 input_bfd
, elfNN_aarch64_howto_table
[howto_index
].name
,
5906 h
->root
.root
.string
);
5907 bfd_set_error (bfd_error_bad_value
);
5908 return bfd_reloc_notsupported
;
5912 case BFD_RELOC_AARCH64_16
:
5914 case BFD_RELOC_AARCH64_32
:
5916 case BFD_RELOC_AARCH64_ADD_LO12
:
5917 case BFD_RELOC_AARCH64_BRANCH19
:
5918 case BFD_RELOC_AARCH64_LDST128_LO12
:
5919 case BFD_RELOC_AARCH64_LDST16_LO12
:
5920 case BFD_RELOC_AARCH64_LDST32_LO12
:
5921 case BFD_RELOC_AARCH64_LDST64_LO12
:
5922 case BFD_RELOC_AARCH64_LDST8_LO12
:
5923 case BFD_RELOC_AARCH64_MOVW_G0
:
5924 case BFD_RELOC_AARCH64_MOVW_G0_NC
:
5925 case BFD_RELOC_AARCH64_MOVW_G0_S
:
5926 case BFD_RELOC_AARCH64_MOVW_G1
:
5927 case BFD_RELOC_AARCH64_MOVW_G1_NC
:
5928 case BFD_RELOC_AARCH64_MOVW_G1_S
:
5929 case BFD_RELOC_AARCH64_MOVW_G2
:
5930 case BFD_RELOC_AARCH64_MOVW_G2_NC
:
5931 case BFD_RELOC_AARCH64_MOVW_G2_S
:
5932 case BFD_RELOC_AARCH64_MOVW_G3
:
5933 case BFD_RELOC_AARCH64_TSTBR14
:
5934 value
= _bfd_aarch64_elf_resolve_relocation (input_bfd
, bfd_r_type
,
5936 signed_addend
, weak_undef_p
);
5939 case BFD_RELOC_AARCH64_ADR_GOT_PAGE
:
5940 case BFD_RELOC_AARCH64_GOT_LD_PREL19
:
5941 case BFD_RELOC_AARCH64_LD32_GOTPAGE_LO14
:
5942 case BFD_RELOC_AARCH64_LD32_GOT_LO12_NC
:
5943 case BFD_RELOC_AARCH64_LD64_GOTPAGE_LO15
:
5944 case BFD_RELOC_AARCH64_LD64_GOT_LO12_NC
:
5945 case BFD_RELOC_AARCH64_LD64_GOTOFF_LO15
:
5946 case BFD_RELOC_AARCH64_MOVW_GOTOFF_G0_NC
:
5947 case BFD_RELOC_AARCH64_MOVW_GOTOFF_G1
:
5948 if (globals
->root
.sgot
== NULL
)
5949 BFD_ASSERT (h
!= NULL
);
5951 relative_reloc
= FALSE
;
5956 /* If a symbol is not dynamic and is not undefined weak, bind it
5957 locally and generate a RELATIVE relocation under PIC mode.
5959 NOTE: one symbol may be referenced by several relocations, we
5960 should only generate one RELATIVE relocation for that symbol.
5961 Therefore, check GOT offset mark first. */
5962 if (h
->dynindx
== -1
5964 && h
->root
.type
!= bfd_link_hash_undefweak
5965 && bfd_link_pic (info
)
5966 && !symbol_got_offset_mark_p (input_bfd
, h
, r_symndx
))
5967 relative_reloc
= TRUE
;
5969 value
= aarch64_calculate_got_entry_vma (h
, globals
, info
, value
,
5971 unresolved_reloc_p
);
5972 /* Record the GOT entry address which will be used when generating
5973 RELATIVE relocation. */
5975 got_entry_addr
= value
;
5977 if (aarch64_relocation_aginst_gp_p (bfd_r_type
))
5978 addend
= (globals
->root
.sgot
->output_section
->vma
5979 + globals
->root
.sgot
->output_offset
);
5980 value
= _bfd_aarch64_elf_resolve_relocation (input_bfd
, bfd_r_type
,
5982 addend
, weak_undef_p
);
5987 struct elf_aarch64_local_symbol
*locals
5988 = elf_aarch64_locals (input_bfd
);
5992 int howto_index
= bfd_r_type
- BFD_RELOC_AARCH64_RELOC_START
;
5994 /* xgettext:c-format */
5995 (_("%pB: local symbol descriptor table be NULL when applying "
5996 "relocation %s against local symbol"),
5997 input_bfd
, elfNN_aarch64_howto_table
[howto_index
].name
);
6001 off
= symbol_got_offset (input_bfd
, h
, r_symndx
);
6002 base_got
= globals
->root
.sgot
;
6003 got_entry_addr
= (base_got
->output_section
->vma
6004 + base_got
->output_offset
+ off
);
6006 if (!symbol_got_offset_mark_p (input_bfd
, h
, r_symndx
))
6008 bfd_put_64 (output_bfd
, value
, base_got
->contents
+ off
);
6010 /* For local symbol, we have done absolute relocation in static
6011 linking stage. While for shared library, we need to update the
6012 content of GOT entry according to the shared object's runtime
6013 base address. So, we need to generate a R_AARCH64_RELATIVE reloc
6014 for dynamic linker. */
6015 if (bfd_link_pic (info
))
6016 relative_reloc
= TRUE
;
6018 symbol_got_offset_mark (input_bfd
, h
, r_symndx
);
6021 /* Update the relocation value to GOT entry addr as we have transformed
6022 the direct data access into indirect data access through GOT. */
6023 value
= got_entry_addr
;
6025 if (aarch64_relocation_aginst_gp_p (bfd_r_type
))
6026 addend
= base_got
->output_section
->vma
+ base_got
->output_offset
;
6028 value
= _bfd_aarch64_elf_resolve_relocation (input_bfd
, bfd_r_type
,
6030 addend
, weak_undef_p
);
6036 Elf_Internal_Rela outrel
;
6038 s
= globals
->root
.srelgot
;
6042 outrel
.r_offset
= got_entry_addr
;
6043 outrel
.r_info
= ELFNN_R_INFO (0, AARCH64_R (RELATIVE
));
6044 outrel
.r_addend
= orig_value
;
6045 elf_append_rela (output_bfd
, s
, &outrel
);
6049 case BFD_RELOC_AARCH64_TLSGD_ADD_LO12_NC
:
6050 case BFD_RELOC_AARCH64_TLSGD_ADR_PAGE21
:
6051 case BFD_RELOC_AARCH64_TLSGD_ADR_PREL21
:
6052 case BFD_RELOC_AARCH64_TLSIE_ADR_GOTTPREL_PAGE21
:
6053 case BFD_RELOC_AARCH64_TLSIE_LD32_GOTTPREL_LO12_NC
:
6054 case BFD_RELOC_AARCH64_TLSIE_LD64_GOTTPREL_LO12_NC
:
6055 case BFD_RELOC_AARCH64_TLSIE_LD_GOTTPREL_PREL19
:
6056 case BFD_RELOC_AARCH64_TLSLD_ADD_LO12_NC
:
6057 case BFD_RELOC_AARCH64_TLSLD_ADR_PAGE21
:
6058 case BFD_RELOC_AARCH64_TLSLD_ADR_PREL21
:
6059 if (globals
->root
.sgot
== NULL
)
6060 return bfd_reloc_notsupported
;
6062 value
= (symbol_got_offset (input_bfd
, h
, r_symndx
)
6063 + globals
->root
.sgot
->output_section
->vma
6064 + globals
->root
.sgot
->output_offset
);
6066 value
= _bfd_aarch64_elf_resolve_relocation (input_bfd
, bfd_r_type
,
6069 *unresolved_reloc_p
= FALSE
;
6072 case BFD_RELOC_AARCH64_TLSGD_MOVW_G0_NC
:
6073 case BFD_RELOC_AARCH64_TLSGD_MOVW_G1
:
6074 case BFD_RELOC_AARCH64_TLSIE_MOVW_GOTTPREL_G0_NC
:
6075 case BFD_RELOC_AARCH64_TLSIE_MOVW_GOTTPREL_G1
:
6076 if (globals
->root
.sgot
== NULL
)
6077 return bfd_reloc_notsupported
;
6079 value
= symbol_got_offset (input_bfd
, h
, r_symndx
);
6080 value
= _bfd_aarch64_elf_resolve_relocation (input_bfd
, bfd_r_type
,
6083 *unresolved_reloc_p
= FALSE
;
6086 case BFD_RELOC_AARCH64_TLSLD_ADD_DTPREL_HI12
:
6087 case BFD_RELOC_AARCH64_TLSLD_ADD_DTPREL_LO12
:
6088 case BFD_RELOC_AARCH64_TLSLD_ADD_DTPREL_LO12_NC
:
6089 case BFD_RELOC_AARCH64_TLSLD_LDST16_DTPREL_LO12
:
6090 case BFD_RELOC_AARCH64_TLSLD_LDST16_DTPREL_LO12_NC
:
6091 case BFD_RELOC_AARCH64_TLSLD_LDST32_DTPREL_LO12
:
6092 case BFD_RELOC_AARCH64_TLSLD_LDST32_DTPREL_LO12_NC
:
6093 case BFD_RELOC_AARCH64_TLSLD_LDST64_DTPREL_LO12
:
6094 case BFD_RELOC_AARCH64_TLSLD_LDST64_DTPREL_LO12_NC
:
6095 case BFD_RELOC_AARCH64_TLSLD_LDST8_DTPREL_LO12
:
6096 case BFD_RELOC_AARCH64_TLSLD_LDST8_DTPREL_LO12_NC
:
6097 case BFD_RELOC_AARCH64_TLSLD_MOVW_DTPREL_G0
:
6098 case BFD_RELOC_AARCH64_TLSLD_MOVW_DTPREL_G0_NC
:
6099 case BFD_RELOC_AARCH64_TLSLD_MOVW_DTPREL_G1
:
6100 case BFD_RELOC_AARCH64_TLSLD_MOVW_DTPREL_G1_NC
:
6101 case BFD_RELOC_AARCH64_TLSLD_MOVW_DTPREL_G2
:
6103 if (!(weak_undef_p
|| elf_hash_table (info
)->tls_sec
))
6105 int howto_index
= bfd_r_type
- BFD_RELOC_AARCH64_RELOC_START
;
6107 /* xgettext:c-format */
6108 (_("%pB: TLS relocation %s against undefined symbol `%s'"),
6109 input_bfd
, elfNN_aarch64_howto_table
[howto_index
].name
,
6110 h
->root
.root
.string
);
6111 bfd_set_error (bfd_error_bad_value
);
6112 return bfd_reloc_notsupported
;
6116 = weak_undef_p
? 0 : signed_addend
- dtpoff_base (info
);
6117 value
= _bfd_aarch64_elf_resolve_relocation (input_bfd
, bfd_r_type
,
6119 def_value
, weak_undef_p
);
6123 case BFD_RELOC_AARCH64_TLSLE_ADD_TPREL_HI12
:
6124 case BFD_RELOC_AARCH64_TLSLE_ADD_TPREL_LO12
:
6125 case BFD_RELOC_AARCH64_TLSLE_ADD_TPREL_LO12_NC
:
6126 case BFD_RELOC_AARCH64_TLSLE_LDST16_TPREL_LO12
:
6127 case BFD_RELOC_AARCH64_TLSLE_LDST16_TPREL_LO12_NC
:
6128 case BFD_RELOC_AARCH64_TLSLE_LDST32_TPREL_LO12
:
6129 case BFD_RELOC_AARCH64_TLSLE_LDST32_TPREL_LO12_NC
:
6130 case BFD_RELOC_AARCH64_TLSLE_LDST64_TPREL_LO12
:
6131 case BFD_RELOC_AARCH64_TLSLE_LDST64_TPREL_LO12_NC
:
6132 case BFD_RELOC_AARCH64_TLSLE_LDST8_TPREL_LO12
:
6133 case BFD_RELOC_AARCH64_TLSLE_LDST8_TPREL_LO12_NC
:
6134 case BFD_RELOC_AARCH64_TLSLE_MOVW_TPREL_G0
:
6135 case BFD_RELOC_AARCH64_TLSLE_MOVW_TPREL_G0_NC
:
6136 case BFD_RELOC_AARCH64_TLSLE_MOVW_TPREL_G1
:
6137 case BFD_RELOC_AARCH64_TLSLE_MOVW_TPREL_G1_NC
:
6138 case BFD_RELOC_AARCH64_TLSLE_MOVW_TPREL_G2
:
6140 if (!(weak_undef_p
|| elf_hash_table (info
)->tls_sec
))
6142 int howto_index
= bfd_r_type
- BFD_RELOC_AARCH64_RELOC_START
;
6144 /* xgettext:c-format */
6145 (_("%pB: TLS relocation %s against undefined symbol `%s'"),
6146 input_bfd
, elfNN_aarch64_howto_table
[howto_index
].name
,
6147 h
->root
.root
.string
);
6148 bfd_set_error (bfd_error_bad_value
);
6149 return bfd_reloc_notsupported
;
6153 = weak_undef_p
? 0 : signed_addend
- tpoff_base (info
);
6154 value
= _bfd_aarch64_elf_resolve_relocation (input_bfd
, bfd_r_type
,
6156 def_value
, weak_undef_p
);
6157 *unresolved_reloc_p
= FALSE
;
6161 case BFD_RELOC_AARCH64_TLSDESC_ADD_LO12
:
6162 case BFD_RELOC_AARCH64_TLSDESC_ADR_PAGE21
:
6163 case BFD_RELOC_AARCH64_TLSDESC_ADR_PREL21
:
6164 case BFD_RELOC_AARCH64_TLSDESC_LD32_LO12_NC
:
6165 case BFD_RELOC_AARCH64_TLSDESC_LD64_LO12
:
6166 case BFD_RELOC_AARCH64_TLSDESC_LD_PREL19
:
6167 if (globals
->root
.sgot
== NULL
)
6168 return bfd_reloc_notsupported
;
6169 value
= (symbol_tlsdesc_got_offset (input_bfd
, h
, r_symndx
)
6170 + globals
->root
.sgotplt
->output_section
->vma
6171 + globals
->root
.sgotplt
->output_offset
6172 + globals
->sgotplt_jump_table_size
);
6174 value
= _bfd_aarch64_elf_resolve_relocation (input_bfd
, bfd_r_type
,
6177 *unresolved_reloc_p
= FALSE
;
6180 case BFD_RELOC_AARCH64_TLSDESC_OFF_G0_NC
:
6181 case BFD_RELOC_AARCH64_TLSDESC_OFF_G1
:
6182 if (globals
->root
.sgot
== NULL
)
6183 return bfd_reloc_notsupported
;
6185 value
= (symbol_tlsdesc_got_offset (input_bfd
, h
, r_symndx
)
6186 + globals
->root
.sgotplt
->output_section
->vma
6187 + globals
->root
.sgotplt
->output_offset
6188 + globals
->sgotplt_jump_table_size
);
6190 value
-= (globals
->root
.sgot
->output_section
->vma
6191 + globals
->root
.sgot
->output_offset
);
6193 value
= _bfd_aarch64_elf_resolve_relocation (input_bfd
, bfd_r_type
,
6196 *unresolved_reloc_p
= FALSE
;
6200 return bfd_reloc_notsupported
;
6204 *saved_addend
= value
;
6206 /* Only apply the final relocation in a sequence. */
6208 return bfd_reloc_continue
;
6210 return _bfd_aarch64_elf_put_addend (input_bfd
, hit_data
, bfd_r_type
,
6214 /* LP64 and ILP32 operates on x- and w-registers respectively.
6215 Next definitions take into account the difference between
6216 corresponding machine codes. R means x-register if the target
6217 arch is LP64, and w-register if the target is ILP32. */
6220 # define add_R0_R0 (0x91000000)
6221 # define add_R0_R0_R1 (0x8b000020)
6222 # define add_R0_R1 (0x91400020)
6223 # define ldr_R0 (0x58000000)
6224 # define ldr_R0_mask(i) (i & 0xffffffe0)
6225 # define ldr_R0_x0 (0xf9400000)
6226 # define ldr_hw_R0 (0xf2a00000)
6227 # define movk_R0 (0xf2800000)
6228 # define movz_R0 (0xd2a00000)
6229 # define movz_hw_R0 (0xd2c00000)
6230 #else /*ARCH_SIZE == 32 */
6231 # define add_R0_R0 (0x11000000)
6232 # define add_R0_R0_R1 (0x0b000020)
6233 # define add_R0_R1 (0x11400020)
6234 # define ldr_R0 (0x18000000)
6235 # define ldr_R0_mask(i) (i & 0xbfffffe0)
6236 # define ldr_R0_x0 (0xb9400000)
6237 # define ldr_hw_R0 (0x72a00000)
6238 # define movk_R0 (0x72800000)
6239 # define movz_R0 (0x52a00000)
6240 # define movz_hw_R0 (0x52c00000)
6243 /* Structure to hold payload for _bfd_aarch64_erratum_843419_clear_stub,
6244 it is used to identify the stub information to reset. */
6246 struct erratum_843419_branch_to_stub_clear_data
6248 bfd_vma adrp_offset
;
6249 asection
*output_section
;
6252 /* Clear the erratum information for GEN_ENTRY if the ADRP_OFFSET and
6253 section inside IN_ARG matches. The clearing is done by setting the
6254 stub_type to none. */
6257 _bfd_aarch64_erratum_843419_clear_stub (struct bfd_hash_entry
*gen_entry
,
6260 struct elf_aarch64_stub_hash_entry
*stub_entry
6261 = (struct elf_aarch64_stub_hash_entry
*) gen_entry
;
6262 struct erratum_843419_branch_to_stub_clear_data
*data
6263 = (struct erratum_843419_branch_to_stub_clear_data
*) in_arg
;
6265 if (stub_entry
->target_section
!= data
->output_section
6266 || stub_entry
->stub_type
!= aarch64_stub_erratum_843419_veneer
6267 || stub_entry
->adrp_offset
!= data
->adrp_offset
)
6270 /* Change the stub type instead of removing the entry, removing from the hash
6271 table would be slower and we have already reserved the memory for the entry
6272 so there wouldn't be much gain. Changing the stub also keeps around a
6273 record of what was there before. */
6274 stub_entry
->stub_type
= aarch64_stub_none
;
6276 /* We're done and there could have been only one matching stub at that
6277 particular offset, so abort further traversal. */
6281 /* TLS Relaxations may relax an adrp sequence that matches the erratum 843419
6282 sequence. In this case the erratum no longer applies and we need to remove
6283 the entry from the pending stub generation. This clears matching adrp insn
6284 at ADRP_OFFSET in INPUT_SECTION in the stub table defined in GLOBALS. */
6287 clear_erratum_843419_entry (struct elf_aarch64_link_hash_table
*globals
,
6288 bfd_vma adrp_offset
, asection
*input_section
)
6290 if (globals
->fix_erratum_843419
& ERRAT_ADRP
)
6292 struct erratum_843419_branch_to_stub_clear_data data
;
6293 data
.adrp_offset
= adrp_offset
;
6294 data
.output_section
= input_section
;
6296 bfd_hash_traverse (&globals
->stub_hash_table
,
6297 _bfd_aarch64_erratum_843419_clear_stub
, &data
);
6301 /* Handle TLS relaxations. Relaxing is possible for symbols that use
6302 R_AARCH64_TLSDESC_ADR_{PAGE, LD64_LO12_NC, ADD_LO12_NC} during a static
6305 Return bfd_reloc_ok if we're done, bfd_reloc_continue if the caller
6306 is to then call final_link_relocate. Return other values in the
6309 static bfd_reloc_status_type
6310 elfNN_aarch64_tls_relax (struct elf_aarch64_link_hash_table
*globals
,
6311 bfd
*input_bfd
, asection
*input_section
,
6312 bfd_byte
*contents
, Elf_Internal_Rela
*rel
,
6313 struct elf_link_hash_entry
*h
)
6315 bfd_boolean is_local
= h
== NULL
;
6316 unsigned int r_type
= ELFNN_R_TYPE (rel
->r_info
);
6319 BFD_ASSERT (globals
&& input_bfd
&& contents
&& rel
);
6321 switch (elfNN_aarch64_bfd_reloc_from_type (input_bfd
, r_type
))
6323 case BFD_RELOC_AARCH64_TLSDESC_ADR_PAGE21
:
6324 case BFD_RELOC_AARCH64_TLSGD_ADR_PAGE21
:
6327 /* GD->LE relaxation:
6328 adrp x0, :tlsgd:var => movz R0, :tprel_g1:var
6330 adrp x0, :tlsdesc:var => movz R0, :tprel_g1:var
6332 Where R is x for LP64, and w for ILP32. */
6333 bfd_putl32 (movz_R0
, contents
+ rel
->r_offset
);
6334 /* We have relaxed the adrp into a mov, we may have to clear any
6335 pending erratum fixes. */
6336 clear_erratum_843419_entry (globals
, rel
->r_offset
, input_section
);
6337 return bfd_reloc_continue
;
6341 /* GD->IE relaxation:
6342 adrp x0, :tlsgd:var => adrp x0, :gottprel:var
6344 adrp x0, :tlsdesc:var => adrp x0, :gottprel:var
6346 return bfd_reloc_continue
;
6349 case BFD_RELOC_AARCH64_TLSDESC_ADR_PREL21
:
6353 case BFD_RELOC_AARCH64_TLSDESC_LD_PREL19
:
6356 /* Tiny TLSDESC->LE relaxation:
6357 ldr x1, :tlsdesc:var => movz R0, #:tprel_g1:var
6358 adr x0, :tlsdesc:var => movk R0, #:tprel_g0_nc:var
6362 Where R is x for LP64, and w for ILP32. */
6363 BFD_ASSERT (ELFNN_R_TYPE (rel
[1].r_info
) == AARCH64_R (TLSDESC_ADR_PREL21
));
6364 BFD_ASSERT (ELFNN_R_TYPE (rel
[2].r_info
) == AARCH64_R (TLSDESC_CALL
));
6366 rel
[1].r_info
= ELFNN_R_INFO (ELFNN_R_SYM (rel
->r_info
),
6367 AARCH64_R (TLSLE_MOVW_TPREL_G0_NC
));
6368 rel
[2].r_info
= ELFNN_R_INFO (STN_UNDEF
, R_AARCH64_NONE
);
6370 bfd_putl32 (movz_R0
, contents
+ rel
->r_offset
);
6371 bfd_putl32 (movk_R0
, contents
+ rel
->r_offset
+ 4);
6372 bfd_putl32 (INSN_NOP
, contents
+ rel
->r_offset
+ 8);
6373 return bfd_reloc_continue
;
6377 /* Tiny TLSDESC->IE relaxation:
6378 ldr x1, :tlsdesc:var => ldr x0, :gottprel:var
6379 adr x0, :tlsdesc:var => nop
6383 BFD_ASSERT (ELFNN_R_TYPE (rel
[1].r_info
) == AARCH64_R (TLSDESC_ADR_PREL21
));
6384 BFD_ASSERT (ELFNN_R_TYPE (rel
[2].r_info
) == AARCH64_R (TLSDESC_CALL
));
6386 rel
[1].r_info
= ELFNN_R_INFO (STN_UNDEF
, R_AARCH64_NONE
);
6387 rel
[2].r_info
= ELFNN_R_INFO (STN_UNDEF
, R_AARCH64_NONE
);
6389 bfd_putl32 (ldr_R0
, contents
+ rel
->r_offset
);
6390 bfd_putl32 (INSN_NOP
, contents
+ rel
->r_offset
+ 4);
6391 bfd_putl32 (INSN_NOP
, contents
+ rel
->r_offset
+ 8);
6392 return bfd_reloc_continue
;
6395 case BFD_RELOC_AARCH64_TLSGD_ADR_PREL21
:
6398 /* Tiny GD->LE relaxation:
6399 adr x0, :tlsgd:var => mrs x1, tpidr_el0
6400 bl __tls_get_addr => add R0, R1, #:tprel_hi12:x, lsl #12
6401 nop => add R0, R0, #:tprel_lo12_nc:x
6403 Where R is x for LP64, and x for Ilp32. */
6405 /* First kill the tls_get_addr reloc on the bl instruction. */
6406 BFD_ASSERT (rel
->r_offset
+ 4 == rel
[1].r_offset
);
6408 bfd_putl32 (0xd53bd041, contents
+ rel
->r_offset
+ 0);
6409 bfd_putl32 (add_R0_R1
, contents
+ rel
->r_offset
+ 4);
6410 bfd_putl32 (add_R0_R0
, contents
+ rel
->r_offset
+ 8);
6412 rel
[1].r_info
= ELFNN_R_INFO (ELFNN_R_SYM (rel
->r_info
),
6413 AARCH64_R (TLSLE_ADD_TPREL_LO12_NC
));
6414 rel
[1].r_offset
= rel
->r_offset
+ 8;
6416 /* Move the current relocation to the second instruction in
6419 rel
->r_info
= ELFNN_R_INFO (ELFNN_R_SYM (rel
->r_info
),
6420 AARCH64_R (TLSLE_ADD_TPREL_HI12
));
6421 return bfd_reloc_continue
;
6425 /* Tiny GD->IE relaxation:
6426 adr x0, :tlsgd:var => ldr R0, :gottprel:var
6427 bl __tls_get_addr => mrs x1, tpidr_el0
6428 nop => add R0, R0, R1
6430 Where R is x for LP64, and w for Ilp32. */
6432 /* First kill the tls_get_addr reloc on the bl instruction. */
6433 BFD_ASSERT (rel
->r_offset
+ 4 == rel
[1].r_offset
);
6434 rel
[1].r_info
= ELFNN_R_INFO (STN_UNDEF
, R_AARCH64_NONE
);
6436 bfd_putl32 (ldr_R0
, contents
+ rel
->r_offset
);
6437 bfd_putl32 (0xd53bd041, contents
+ rel
->r_offset
+ 4);
6438 bfd_putl32 (add_R0_R0_R1
, contents
+ rel
->r_offset
+ 8);
6439 return bfd_reloc_continue
;
6443 case BFD_RELOC_AARCH64_TLSGD_MOVW_G1
:
6444 BFD_ASSERT (ELFNN_R_TYPE (rel
[1].r_info
) == AARCH64_R (TLSGD_MOVW_G0_NC
));
6445 BFD_ASSERT (rel
->r_offset
+ 12 == rel
[2].r_offset
);
6446 BFD_ASSERT (ELFNN_R_TYPE (rel
[2].r_info
) == AARCH64_R (CALL26
));
6450 /* Large GD->LE relaxation:
6451 movz x0, #:tlsgd_g1:var => movz x0, #:tprel_g2:var, lsl #32
6452 movk x0, #:tlsgd_g0_nc:var => movk x0, #:tprel_g1_nc:var, lsl #16
6453 add x0, gp, x0 => movk x0, #:tprel_g0_nc:var
6454 bl __tls_get_addr => mrs x1, tpidr_el0
6455 nop => add x0, x0, x1
6457 rel
[2].r_info
= ELFNN_R_INFO (ELFNN_R_SYM (rel
->r_info
),
6458 AARCH64_R (TLSLE_MOVW_TPREL_G0_NC
));
6459 rel
[2].r_offset
= rel
->r_offset
+ 8;
6461 bfd_putl32 (movz_hw_R0
, contents
+ rel
->r_offset
+ 0);
6462 bfd_putl32 (ldr_hw_R0
, contents
+ rel
->r_offset
+ 4);
6463 bfd_putl32 (movk_R0
, contents
+ rel
->r_offset
+ 8);
6464 bfd_putl32 (0xd53bd041, contents
+ rel
->r_offset
+ 12);
6465 bfd_putl32 (add_R0_R0_R1
, contents
+ rel
->r_offset
+ 16);
6469 /* Large GD->IE relaxation:
6470 movz x0, #:tlsgd_g1:var => movz x0, #:gottprel_g1:var, lsl #16
6471 movk x0, #:tlsgd_g0_nc:var => movk x0, #:gottprel_g0_nc:var
6472 add x0, gp, x0 => ldr x0, [gp, x0]
6473 bl __tls_get_addr => mrs x1, tpidr_el0
6474 nop => add x0, x0, x1
6476 rel
[2].r_info
= ELFNN_R_INFO (STN_UNDEF
, R_AARCH64_NONE
);
6477 bfd_putl32 (0xd2a80000, contents
+ rel
->r_offset
+ 0);
6478 bfd_putl32 (ldr_R0
, contents
+ rel
->r_offset
+ 8);
6479 bfd_putl32 (0xd53bd041, contents
+ rel
->r_offset
+ 12);
6480 bfd_putl32 (add_R0_R0_R1
, contents
+ rel
->r_offset
+ 16);
6482 return bfd_reloc_continue
;
6484 case BFD_RELOC_AARCH64_TLSGD_MOVW_G0_NC
:
6485 return bfd_reloc_continue
;
6488 case BFD_RELOC_AARCH64_TLSIE_LD_GOTTPREL_PREL19
:
6489 return bfd_reloc_continue
;
6491 case BFD_RELOC_AARCH64_TLSDESC_LDNN_LO12_NC
:
6494 /* GD->LE relaxation:
6495 ldr xd, [x0, #:tlsdesc_lo12:var] => movk x0, :tprel_g0_nc:var
6497 Where R is x for lp64 mode, and w for ILP32 mode. */
6498 bfd_putl32 (movk_R0
, contents
+ rel
->r_offset
);
6499 return bfd_reloc_continue
;
6503 /* GD->IE relaxation:
6504 ldr xd, [x0, #:tlsdesc_lo12:var] => ldr R0, [x0, #:gottprel_lo12:var]
6506 Where R is x for lp64 mode, and w for ILP32 mode. */
6507 insn
= bfd_getl32 (contents
+ rel
->r_offset
);
6508 bfd_putl32 (ldr_R0_mask (insn
), contents
+ rel
->r_offset
);
6509 return bfd_reloc_continue
;
6512 case BFD_RELOC_AARCH64_TLSGD_ADD_LO12_NC
:
6515 /* GD->LE relaxation
6516 add x0, #:tlsgd_lo12:var => movk R0, :tprel_g0_nc:var
6517 bl __tls_get_addr => mrs x1, tpidr_el0
6518 nop => add R0, R1, R0
6520 Where R is x for lp64 mode, and w for ILP32 mode. */
6522 /* First kill the tls_get_addr reloc on the bl instruction. */
6523 BFD_ASSERT (rel
->r_offset
+ 4 == rel
[1].r_offset
);
6524 rel
[1].r_info
= ELFNN_R_INFO (STN_UNDEF
, R_AARCH64_NONE
);
6526 bfd_putl32 (movk_R0
, contents
+ rel
->r_offset
);
6527 bfd_putl32 (0xd53bd041, contents
+ rel
->r_offset
+ 4);
6528 bfd_putl32 (add_R0_R0_R1
, contents
+ rel
->r_offset
+ 8);
6529 return bfd_reloc_continue
;
6533 /* GD->IE relaxation
6534 ADD x0, #:tlsgd_lo12:var => ldr R0, [x0, #:gottprel_lo12:var]
6535 BL __tls_get_addr => mrs x1, tpidr_el0
6537 NOP => add R0, R1, R0
6539 Where R is x for lp64 mode, and w for ilp32 mode. */
6541 BFD_ASSERT (ELFNN_R_TYPE (rel
[1].r_info
) == AARCH64_R (CALL26
));
6543 /* Remove the relocation on the BL instruction. */
6544 rel
[1].r_info
= ELFNN_R_INFO (STN_UNDEF
, R_AARCH64_NONE
);
6546 /* We choose to fixup the BL and NOP instructions using the
6547 offset from the second relocation to allow flexibility in
6548 scheduling instructions between the ADD and BL. */
6549 bfd_putl32 (ldr_R0_x0
, contents
+ rel
->r_offset
);
6550 bfd_putl32 (0xd53bd041, contents
+ rel
[1].r_offset
);
6551 bfd_putl32 (add_R0_R0_R1
, contents
+ rel
[1].r_offset
+ 4);
6552 return bfd_reloc_continue
;
6555 case BFD_RELOC_AARCH64_TLSDESC_ADD
:
6556 case BFD_RELOC_AARCH64_TLSDESC_ADD_LO12
:
6557 case BFD_RELOC_AARCH64_TLSDESC_CALL
:
6558 /* GD->IE/LE relaxation:
6559 add x0, x0, #:tlsdesc_lo12:var => nop
6562 bfd_putl32 (INSN_NOP
, contents
+ rel
->r_offset
);
6563 return bfd_reloc_ok
;
6565 case BFD_RELOC_AARCH64_TLSDESC_LDR
:
6568 /* GD->LE relaxation:
6569 ldr xd, [gp, xn] => movk R0, #:tprel_g0_nc:var
6571 Where R is x for lp64 mode, and w for ILP32 mode. */
6572 bfd_putl32 (movk_R0
, contents
+ rel
->r_offset
);
6573 return bfd_reloc_continue
;
6577 /* GD->IE relaxation:
6578 ldr xd, [gp, xn] => ldr R0, [gp, xn]
6580 Where R is x for lp64 mode, and w for ILP32 mode. */
6581 insn
= bfd_getl32 (contents
+ rel
->r_offset
);
6582 bfd_putl32 (ldr_R0_mask (insn
), contents
+ rel
->r_offset
);
6583 return bfd_reloc_ok
;
6586 case BFD_RELOC_AARCH64_TLSDESC_OFF_G0_NC
:
6587 /* GD->LE relaxation:
6588 movk xd, #:tlsdesc_off_g0_nc:var => movk R0, #:tprel_g1_nc:var, lsl #16
6590 movk xd, #:tlsdesc_off_g0_nc:var => movk Rd, #:gottprel_g0_nc:var
6592 Where R is x for lp64 mode, and w for ILP32 mode. */
6594 bfd_putl32 (ldr_hw_R0
, contents
+ rel
->r_offset
);
6595 return bfd_reloc_continue
;
6597 case BFD_RELOC_AARCH64_TLSDESC_OFF_G1
:
6600 /* GD->LE relaxation:
6601 movz xd, #:tlsdesc_off_g1:var => movz R0, #:tprel_g2:var, lsl #32
6603 Where R is x for lp64 mode, and w for ILP32 mode. */
6604 bfd_putl32 (movz_hw_R0
, contents
+ rel
->r_offset
);
6605 return bfd_reloc_continue
;
6609 /* GD->IE relaxation:
6610 movz xd, #:tlsdesc_off_g1:var => movz Rd, #:gottprel_g1:var, lsl #16
6612 Where R is x for lp64 mode, and w for ILP32 mode. */
6613 insn
= bfd_getl32 (contents
+ rel
->r_offset
);
6614 bfd_putl32 (movz_R0
| (insn
& 0x1f), contents
+ rel
->r_offset
);
6615 return bfd_reloc_continue
;
6618 case BFD_RELOC_AARCH64_TLSIE_ADR_GOTTPREL_PAGE21
:
6619 /* IE->LE relaxation:
6620 adrp xd, :gottprel:var => movz Rd, :tprel_g1:var
6622 Where R is x for lp64 mode, and w for ILP32 mode. */
6625 insn
= bfd_getl32 (contents
+ rel
->r_offset
);
6626 bfd_putl32 (movz_R0
| (insn
& 0x1f), contents
+ rel
->r_offset
);
6627 /* We have relaxed the adrp into a mov, we may have to clear any
6628 pending erratum fixes. */
6629 clear_erratum_843419_entry (globals
, rel
->r_offset
, input_section
);
6631 return bfd_reloc_continue
;
6633 case BFD_RELOC_AARCH64_TLSIE_LDNN_GOTTPREL_LO12_NC
:
6634 /* IE->LE relaxation:
6635 ldr xd, [xm, #:gottprel_lo12:var] => movk Rd, :tprel_g0_nc:var
6637 Where R is x for lp64 mode, and w for ILP32 mode. */
6640 insn
= bfd_getl32 (contents
+ rel
->r_offset
);
6641 bfd_putl32 (movk_R0
| (insn
& 0x1f), contents
+ rel
->r_offset
);
6643 return bfd_reloc_continue
;
6645 case BFD_RELOC_AARCH64_TLSLD_ADR_PREL21
:
6646 /* LD->LE relaxation (tiny):
6647 adr x0, :tlsldm:x => mrs x0, tpidr_el0
6648 bl __tls_get_addr => add R0, R0, TCB_SIZE
6650 Where R is x for lp64 mode, and w for ilp32 mode. */
6653 BFD_ASSERT (rel
->r_offset
+ 4 == rel
[1].r_offset
);
6654 BFD_ASSERT (ELFNN_R_TYPE (rel
[1].r_info
) == AARCH64_R (CALL26
));
6655 /* No need of CALL26 relocation for tls_get_addr. */
6656 rel
[1].r_info
= ELFNN_R_INFO (STN_UNDEF
, R_AARCH64_NONE
);
6657 bfd_putl32 (0xd53bd040, contents
+ rel
->r_offset
+ 0);
6658 bfd_putl32 (add_R0_R0
| (TCB_SIZE
<< 10),
6659 contents
+ rel
->r_offset
+ 4);
6660 return bfd_reloc_ok
;
6662 return bfd_reloc_continue
;
6664 case BFD_RELOC_AARCH64_TLSLD_ADR_PAGE21
:
6665 /* LD->LE relaxation (small):
6666 adrp x0, :tlsldm:x => mrs x0, tpidr_el0
6670 bfd_putl32 (0xd53bd040, contents
+ rel
->r_offset
);
6671 return bfd_reloc_ok
;
6673 return bfd_reloc_continue
;
6675 case BFD_RELOC_AARCH64_TLSLD_ADD_LO12_NC
:
6676 /* LD->LE relaxation (small):
6677 add x0, #:tlsldm_lo12:x => add R0, R0, TCB_SIZE
6678 bl __tls_get_addr => nop
6680 Where R is x for lp64 mode, and w for ilp32 mode. */
6683 BFD_ASSERT (rel
->r_offset
+ 4 == rel
[1].r_offset
);
6684 BFD_ASSERT (ELFNN_R_TYPE (rel
[1].r_info
) == AARCH64_R (CALL26
));
6685 /* No need of CALL26 relocation for tls_get_addr. */
6686 rel
[1].r_info
= ELFNN_R_INFO (STN_UNDEF
, R_AARCH64_NONE
);
6687 bfd_putl32 (add_R0_R0
| (TCB_SIZE
<< 10),
6688 contents
+ rel
->r_offset
+ 0);
6689 bfd_putl32 (INSN_NOP
, contents
+ rel
->r_offset
+ 4);
6690 return bfd_reloc_ok
;
6692 return bfd_reloc_continue
;
6695 return bfd_reloc_continue
;
6698 return bfd_reloc_ok
;
6701 /* Relocate an AArch64 ELF section. */
6704 elfNN_aarch64_relocate_section (bfd
*output_bfd
,
6705 struct bfd_link_info
*info
,
6707 asection
*input_section
,
6709 Elf_Internal_Rela
*relocs
,
6710 Elf_Internal_Sym
*local_syms
,
6711 asection
**local_sections
)
6713 Elf_Internal_Shdr
*symtab_hdr
;
6714 struct elf_link_hash_entry
**sym_hashes
;
6715 Elf_Internal_Rela
*rel
;
6716 Elf_Internal_Rela
*relend
;
6718 struct elf_aarch64_link_hash_table
*globals
;
6719 bfd_boolean save_addend
= FALSE
;
6722 globals
= elf_aarch64_hash_table (info
);
6724 symtab_hdr
= &elf_symtab_hdr (input_bfd
);
6725 sym_hashes
= elf_sym_hashes (input_bfd
);
6728 relend
= relocs
+ input_section
->reloc_count
;
6729 for (; rel
< relend
; rel
++)
6731 unsigned int r_type
;
6732 bfd_reloc_code_real_type bfd_r_type
;
6733 bfd_reloc_code_real_type relaxed_bfd_r_type
;
6734 reloc_howto_type
*howto
;
6735 unsigned long r_symndx
;
6736 Elf_Internal_Sym
*sym
;
6738 struct elf_link_hash_entry
*h
;
6740 bfd_reloc_status_type r
;
6743 bfd_boolean unresolved_reloc
= FALSE
;
6744 char *error_message
= NULL
;
6746 r_symndx
= ELFNN_R_SYM (rel
->r_info
);
6747 r_type
= ELFNN_R_TYPE (rel
->r_info
);
6749 bfd_reloc
.howto
= elfNN_aarch64_howto_from_type (input_bfd
, r_type
);
6750 howto
= bfd_reloc
.howto
;
6753 return _bfd_unrecognized_reloc (input_bfd
, input_section
, r_type
);
6755 bfd_r_type
= elfNN_aarch64_bfd_reloc_from_howto (howto
);
6761 if (r_symndx
< symtab_hdr
->sh_info
)
6763 sym
= local_syms
+ r_symndx
;
6764 sym_type
= ELFNN_ST_TYPE (sym
->st_info
);
6765 sec
= local_sections
[r_symndx
];
6767 /* An object file might have a reference to a local
6768 undefined symbol. This is a daft object file, but we
6769 should at least do something about it. */
6770 if (r_type
!= R_AARCH64_NONE
&& r_type
!= R_AARCH64_NULL
6771 && bfd_is_und_section (sec
)
6772 && ELF_ST_BIND (sym
->st_info
) != STB_WEAK
)
6773 (*info
->callbacks
->undefined_symbol
)
6774 (info
, bfd_elf_string_from_elf_section
6775 (input_bfd
, symtab_hdr
->sh_link
, sym
->st_name
),
6776 input_bfd
, input_section
, rel
->r_offset
, TRUE
);
6778 relocation
= _bfd_elf_rela_local_sym (output_bfd
, sym
, &sec
, rel
);
6780 /* Relocate against local STT_GNU_IFUNC symbol. */
6781 if (!bfd_link_relocatable (info
)
6782 && ELF_ST_TYPE (sym
->st_info
) == STT_GNU_IFUNC
)
6784 h
= elfNN_aarch64_get_local_sym_hash (globals
, input_bfd
,
6789 /* Set STT_GNU_IFUNC symbol value. */
6790 h
->root
.u
.def
.value
= sym
->st_value
;
6791 h
->root
.u
.def
.section
= sec
;
6796 bfd_boolean warned
, ignored
;
6798 RELOC_FOR_GLOBAL_SYMBOL (info
, input_bfd
, input_section
, rel
,
6799 r_symndx
, symtab_hdr
, sym_hashes
,
6801 unresolved_reloc
, warned
, ignored
);
6806 if (sec
!= NULL
&& discarded_section (sec
))
6807 RELOC_AGAINST_DISCARDED_SECTION (info
, input_bfd
, input_section
,
6808 rel
, 1, relend
, howto
, 0, contents
);
6810 if (bfd_link_relocatable (info
))
6814 name
= h
->root
.root
.string
;
6817 name
= (bfd_elf_string_from_elf_section
6818 (input_bfd
, symtab_hdr
->sh_link
, sym
->st_name
));
6819 if (name
== NULL
|| *name
== '\0')
6820 name
= bfd_section_name (sec
);
6824 && r_type
!= R_AARCH64_NONE
6825 && r_type
!= R_AARCH64_NULL
6827 || h
->root
.type
== bfd_link_hash_defined
6828 || h
->root
.type
== bfd_link_hash_defweak
)
6829 && IS_AARCH64_TLS_RELOC (bfd_r_type
) != (sym_type
== STT_TLS
))
6832 ((sym_type
== STT_TLS
6833 /* xgettext:c-format */
6834 ? _("%pB(%pA+%#" PRIx64
"): %s used with TLS symbol %s")
6835 /* xgettext:c-format */
6836 : _("%pB(%pA+%#" PRIx64
"): %s used with non-TLS symbol %s")),
6838 input_section
, (uint64_t) rel
->r_offset
, howto
->name
, name
);
6841 /* We relax only if we can see that there can be a valid transition
6842 from a reloc type to another.
6843 We call elfNN_aarch64_final_link_relocate unless we're completely
6844 done, i.e., the relaxation produced the final output we want. */
6846 relaxed_bfd_r_type
= aarch64_tls_transition (input_bfd
, info
, r_type
,
6848 if (relaxed_bfd_r_type
!= bfd_r_type
)
6850 bfd_r_type
= relaxed_bfd_r_type
;
6851 howto
= elfNN_aarch64_howto_from_bfd_reloc (bfd_r_type
);
6852 BFD_ASSERT (howto
!= NULL
);
6853 r_type
= howto
->type
;
6854 r
= elfNN_aarch64_tls_relax (globals
, input_bfd
, input_section
,
6856 unresolved_reloc
= 0;
6859 r
= bfd_reloc_continue
;
6861 /* There may be multiple consecutive relocations for the
6862 same offset. In that case we are supposed to treat the
6863 output of each relocation as the addend for the next. */
6864 if (rel
+ 1 < relend
6865 && rel
->r_offset
== rel
[1].r_offset
6866 && ELFNN_R_TYPE (rel
[1].r_info
) != R_AARCH64_NONE
6867 && ELFNN_R_TYPE (rel
[1].r_info
) != R_AARCH64_NULL
)
6870 save_addend
= FALSE
;
6872 if (r
== bfd_reloc_continue
)
6873 r
= elfNN_aarch64_final_link_relocate (howto
, input_bfd
, output_bfd
,
6874 input_section
, contents
, rel
,
6875 relocation
, info
, sec
,
6876 h
, &unresolved_reloc
,
6877 save_addend
, &addend
, sym
);
6879 switch (elfNN_aarch64_bfd_reloc_from_type (input_bfd
, r_type
))
6881 case BFD_RELOC_AARCH64_TLSGD_ADD_LO12_NC
:
6882 case BFD_RELOC_AARCH64_TLSGD_ADR_PAGE21
:
6883 case BFD_RELOC_AARCH64_TLSGD_ADR_PREL21
:
6884 case BFD_RELOC_AARCH64_TLSGD_MOVW_G0_NC
:
6885 case BFD_RELOC_AARCH64_TLSGD_MOVW_G1
:
6886 case BFD_RELOC_AARCH64_TLSLD_ADD_LO12_NC
:
6887 case BFD_RELOC_AARCH64_TLSLD_ADR_PAGE21
:
6888 case BFD_RELOC_AARCH64_TLSLD_ADR_PREL21
:
6889 if (! symbol_got_offset_mark_p (input_bfd
, h
, r_symndx
))
6891 bfd_boolean need_relocs
= FALSE
;
6896 off
= symbol_got_offset (input_bfd
, h
, r_symndx
);
6897 indx
= h
&& h
->dynindx
!= -1 ? h
->dynindx
: 0;
6900 (!bfd_link_executable (info
) || indx
!= 0) &&
6902 || ELF_ST_VISIBILITY (h
->other
) == STV_DEFAULT
6903 || h
->root
.type
!= bfd_link_hash_undefweak
);
6905 BFD_ASSERT (globals
->root
.srelgot
!= NULL
);
6909 Elf_Internal_Rela rela
;
6910 rela
.r_info
= ELFNN_R_INFO (indx
, AARCH64_R (TLS_DTPMOD
));
6912 rela
.r_offset
= globals
->root
.sgot
->output_section
->vma
+
6913 globals
->root
.sgot
->output_offset
+ off
;
6916 loc
= globals
->root
.srelgot
->contents
;
6917 loc
+= globals
->root
.srelgot
->reloc_count
++
6918 * RELOC_SIZE (htab
);
6919 bfd_elfNN_swap_reloca_out (output_bfd
, &rela
, loc
);
6921 bfd_reloc_code_real_type real_type
=
6922 elfNN_aarch64_bfd_reloc_from_type (input_bfd
, r_type
);
6924 if (real_type
== BFD_RELOC_AARCH64_TLSLD_ADR_PREL21
6925 || real_type
== BFD_RELOC_AARCH64_TLSLD_ADR_PAGE21
6926 || real_type
== BFD_RELOC_AARCH64_TLSLD_ADD_LO12_NC
)
6928 /* For local dynamic, don't generate DTPREL in any case.
6929 Initialize the DTPREL slot into zero, so we get module
6930 base address when invoke runtime TLS resolver. */
6931 bfd_put_NN (output_bfd
, 0,
6932 globals
->root
.sgot
->contents
+ off
6937 bfd_put_NN (output_bfd
,
6938 relocation
- dtpoff_base (info
),
6939 globals
->root
.sgot
->contents
+ off
6944 /* This TLS symbol is global. We emit a
6945 relocation to fixup the tls offset at load
6948 ELFNN_R_INFO (indx
, AARCH64_R (TLS_DTPREL
));
6951 (globals
->root
.sgot
->output_section
->vma
6952 + globals
->root
.sgot
->output_offset
+ off
6955 loc
= globals
->root
.srelgot
->contents
;
6956 loc
+= globals
->root
.srelgot
->reloc_count
++
6957 * RELOC_SIZE (globals
);
6958 bfd_elfNN_swap_reloca_out (output_bfd
, &rela
, loc
);
6959 bfd_put_NN (output_bfd
, (bfd_vma
) 0,
6960 globals
->root
.sgot
->contents
+ off
6966 bfd_put_NN (output_bfd
, (bfd_vma
) 1,
6967 globals
->root
.sgot
->contents
+ off
);
6968 bfd_put_NN (output_bfd
,
6969 relocation
- dtpoff_base (info
),
6970 globals
->root
.sgot
->contents
+ off
6974 symbol_got_offset_mark (input_bfd
, h
, r_symndx
);
6978 case BFD_RELOC_AARCH64_TLSIE_ADR_GOTTPREL_PAGE21
:
6979 case BFD_RELOC_AARCH64_TLSIE_LDNN_GOTTPREL_LO12_NC
:
6980 case BFD_RELOC_AARCH64_TLSIE_LD_GOTTPREL_PREL19
:
6981 case BFD_RELOC_AARCH64_TLSIE_MOVW_GOTTPREL_G0_NC
:
6982 case BFD_RELOC_AARCH64_TLSIE_MOVW_GOTTPREL_G1
:
6983 if (! symbol_got_offset_mark_p (input_bfd
, h
, r_symndx
))
6985 bfd_boolean need_relocs
= FALSE
;
6990 off
= symbol_got_offset (input_bfd
, h
, r_symndx
);
6992 indx
= h
&& h
->dynindx
!= -1 ? h
->dynindx
: 0;
6995 (!bfd_link_executable (info
) || indx
!= 0) &&
6997 || ELF_ST_VISIBILITY (h
->other
) == STV_DEFAULT
6998 || h
->root
.type
!= bfd_link_hash_undefweak
);
7000 BFD_ASSERT (globals
->root
.srelgot
!= NULL
);
7004 Elf_Internal_Rela rela
;
7007 rela
.r_addend
= relocation
- dtpoff_base (info
);
7011 rela
.r_info
= ELFNN_R_INFO (indx
, AARCH64_R (TLS_TPREL
));
7012 rela
.r_offset
= globals
->root
.sgot
->output_section
->vma
+
7013 globals
->root
.sgot
->output_offset
+ off
;
7015 loc
= globals
->root
.srelgot
->contents
;
7016 loc
+= globals
->root
.srelgot
->reloc_count
++
7017 * RELOC_SIZE (htab
);
7019 bfd_elfNN_swap_reloca_out (output_bfd
, &rela
, loc
);
7021 bfd_put_NN (output_bfd
, rela
.r_addend
,
7022 globals
->root
.sgot
->contents
+ off
);
7025 bfd_put_NN (output_bfd
, relocation
- tpoff_base (info
),
7026 globals
->root
.sgot
->contents
+ off
);
7028 symbol_got_offset_mark (input_bfd
, h
, r_symndx
);
7032 case BFD_RELOC_AARCH64_TLSDESC_ADD_LO12
:
7033 case BFD_RELOC_AARCH64_TLSDESC_ADR_PAGE21
:
7034 case BFD_RELOC_AARCH64_TLSDESC_ADR_PREL21
:
7035 case BFD_RELOC_AARCH64_TLSDESC_LDNN_LO12_NC
:
7036 case BFD_RELOC_AARCH64_TLSDESC_LD_PREL19
:
7037 case BFD_RELOC_AARCH64_TLSDESC_OFF_G0_NC
:
7038 case BFD_RELOC_AARCH64_TLSDESC_OFF_G1
:
7039 if (! symbol_tlsdesc_got_offset_mark_p (input_bfd
, h
, r_symndx
))
7041 bfd_boolean need_relocs
= FALSE
;
7042 int indx
= h
&& h
->dynindx
!= -1 ? h
->dynindx
: 0;
7043 bfd_vma off
= symbol_tlsdesc_got_offset (input_bfd
, h
, r_symndx
);
7045 need_relocs
= (h
== NULL
7046 || ELF_ST_VISIBILITY (h
->other
) == STV_DEFAULT
7047 || h
->root
.type
!= bfd_link_hash_undefweak
);
7049 BFD_ASSERT (globals
->root
.srelgot
!= NULL
);
7050 BFD_ASSERT (globals
->root
.sgot
!= NULL
);
7055 Elf_Internal_Rela rela
;
7056 rela
.r_info
= ELFNN_R_INFO (indx
, AARCH64_R (TLSDESC
));
7059 rela
.r_offset
= (globals
->root
.sgotplt
->output_section
->vma
7060 + globals
->root
.sgotplt
->output_offset
7061 + off
+ globals
->sgotplt_jump_table_size
);
7064 rela
.r_addend
= relocation
- dtpoff_base (info
);
7066 /* Allocate the next available slot in the PLT reloc
7067 section to hold our R_AARCH64_TLSDESC, the next
7068 available slot is determined from reloc_count,
7069 which we step. But note, reloc_count was
7070 artifically moved down while allocating slots for
7071 real PLT relocs such that all of the PLT relocs
7072 will fit above the initial reloc_count and the
7073 extra stuff will fit below. */
7074 loc
= globals
->root
.srelplt
->contents
;
7075 loc
+= globals
->root
.srelplt
->reloc_count
++
7076 * RELOC_SIZE (globals
);
7078 bfd_elfNN_swap_reloca_out (output_bfd
, &rela
, loc
);
7080 bfd_put_NN (output_bfd
, (bfd_vma
) 0,
7081 globals
->root
.sgotplt
->contents
+ off
+
7082 globals
->sgotplt_jump_table_size
);
7083 bfd_put_NN (output_bfd
, (bfd_vma
) 0,
7084 globals
->root
.sgotplt
->contents
+ off
+
7085 globals
->sgotplt_jump_table_size
+
7089 symbol_tlsdesc_got_offset_mark (input_bfd
, h
, r_symndx
);
7096 /* Dynamic relocs are not propagated for SEC_DEBUGGING sections
7097 because such sections are not SEC_ALLOC and thus ld.so will
7098 not process them. */
7099 if (unresolved_reloc
7100 && !((input_section
->flags
& SEC_DEBUGGING
) != 0
7102 && _bfd_elf_section_offset (output_bfd
, info
, input_section
,
7103 +rel
->r_offset
) != (bfd_vma
) - 1)
7106 /* xgettext:c-format */
7107 (_("%pB(%pA+%#" PRIx64
"): "
7108 "unresolvable %s relocation against symbol `%s'"),
7109 input_bfd
, input_section
, (uint64_t) rel
->r_offset
, howto
->name
,
7110 h
->root
.root
.string
);
7114 if (r
!= bfd_reloc_ok
&& r
!= bfd_reloc_continue
)
7116 bfd_reloc_code_real_type real_r_type
7117 = elfNN_aarch64_bfd_reloc_from_type (input_bfd
, r_type
);
7121 case bfd_reloc_overflow
:
7122 (*info
->callbacks
->reloc_overflow
)
7123 (info
, (h
? &h
->root
: NULL
), name
, howto
->name
, (bfd_vma
) 0,
7124 input_bfd
, input_section
, rel
->r_offset
);
7125 if (real_r_type
== BFD_RELOC_AARCH64_LD64_GOTPAGE_LO15
7126 || real_r_type
== BFD_RELOC_AARCH64_LD32_GOTPAGE_LO14
)
7128 (*info
->callbacks
->warning
)
7130 _("too many GOT entries for -fpic, "
7131 "please recompile with -fPIC"),
7132 name
, input_bfd
, input_section
, rel
->r_offset
);
7135 /* Overflow can occur when a variable is referenced with a type
7136 that has a larger alignment than the type with which it was
7138 file1.c: extern int foo; int a (void) { return foo; }
7139 file2.c: char bar, foo, baz;
7140 If the variable is placed into a data section at an offset
7141 that is incompatible with the larger alignment requirement
7142 overflow will occur. (Strictly speaking this is not overflow
7143 but rather an alignment problem, but the bfd_reloc_ error
7144 enum does not have a value to cover that situation).
7146 Try to catch this situation here and provide a more helpful
7147 error message to the user. */
7148 if (addend
& ((1 << howto
->rightshift
) - 1)
7149 /* FIXME: Are we testing all of the appropriate reloc
7151 && (real_r_type
== BFD_RELOC_AARCH64_LD_LO19_PCREL
7152 || real_r_type
== BFD_RELOC_AARCH64_LDST16_LO12
7153 || real_r_type
== BFD_RELOC_AARCH64_LDST32_LO12
7154 || real_r_type
== BFD_RELOC_AARCH64_LDST64_LO12
7155 || real_r_type
== BFD_RELOC_AARCH64_LDST128_LO12
))
7157 info
->callbacks
->warning
7158 (info
, _("one possible cause of this error is that the \
7159 symbol is being referenced in the indicated code as if it had a larger \
7160 alignment than was declared where it was defined"),
7161 name
, input_bfd
, input_section
, rel
->r_offset
);
7165 case bfd_reloc_undefined
:
7166 (*info
->callbacks
->undefined_symbol
)
7167 (info
, name
, input_bfd
, input_section
, rel
->r_offset
, TRUE
);
7170 case bfd_reloc_outofrange
:
7171 error_message
= _("out of range");
7174 case bfd_reloc_notsupported
:
7175 error_message
= _("unsupported relocation");
7178 case bfd_reloc_dangerous
:
7179 /* error_message should already be set. */
7183 error_message
= _("unknown error");
7187 BFD_ASSERT (error_message
!= NULL
);
7188 (*info
->callbacks
->reloc_dangerous
)
7189 (info
, error_message
, input_bfd
, input_section
, rel
->r_offset
);
7201 /* Set the right machine number. */
7204 elfNN_aarch64_object_p (bfd
*abfd
)
7207 bfd_default_set_arch_mach (abfd
, bfd_arch_aarch64
, bfd_mach_aarch64_ilp32
);
7209 bfd_default_set_arch_mach (abfd
, bfd_arch_aarch64
, bfd_mach_aarch64
);
7214 /* Function to keep AArch64 specific flags in the ELF header. */
7217 elfNN_aarch64_set_private_flags (bfd
*abfd
, flagword flags
)
7219 if (elf_flags_init (abfd
) && elf_elfheader (abfd
)->e_flags
!= flags
)
7224 elf_elfheader (abfd
)->e_flags
= flags
;
7225 elf_flags_init (abfd
) = TRUE
;
7231 /* Merge backend specific data from an object file to the output
7232 object file when linking. */
7235 elfNN_aarch64_merge_private_bfd_data (bfd
*ibfd
, struct bfd_link_info
*info
)
7237 bfd
*obfd
= info
->output_bfd
;
7240 bfd_boolean flags_compatible
= TRUE
;
7243 /* Check if we have the same endianess. */
7244 if (!_bfd_generic_verify_endian_match (ibfd
, info
))
7247 if (!is_aarch64_elf (ibfd
) || !is_aarch64_elf (obfd
))
7250 /* The input BFD must have had its flags initialised. */
7251 /* The following seems bogus to me -- The flags are initialized in
7252 the assembler but I don't think an elf_flags_init field is
7253 written into the object. */
7254 /* BFD_ASSERT (elf_flags_init (ibfd)); */
7256 in_flags
= elf_elfheader (ibfd
)->e_flags
;
7257 out_flags
= elf_elfheader (obfd
)->e_flags
;
7259 if (!elf_flags_init (obfd
))
7261 /* If the input is the default architecture and had the default
7262 flags then do not bother setting the flags for the output
7263 architecture, instead allow future merges to do this. If no
7264 future merges ever set these flags then they will retain their
7265 uninitialised values, which surprise surprise, correspond
7266 to the default values. */
7267 if (bfd_get_arch_info (ibfd
)->the_default
7268 && elf_elfheader (ibfd
)->e_flags
== 0)
7271 elf_flags_init (obfd
) = TRUE
;
7272 elf_elfheader (obfd
)->e_flags
= in_flags
;
7274 if (bfd_get_arch (obfd
) == bfd_get_arch (ibfd
)
7275 && bfd_get_arch_info (obfd
)->the_default
)
7276 return bfd_set_arch_mach (obfd
, bfd_get_arch (ibfd
),
7277 bfd_get_mach (ibfd
));
7282 /* Identical flags must be compatible. */
7283 if (in_flags
== out_flags
)
7286 /* Check to see if the input BFD actually contains any sections. If
7287 not, its flags may not have been initialised either, but it
7288 cannot actually cause any incompatiblity. Do not short-circuit
7289 dynamic objects; their section list may be emptied by
7290 elf_link_add_object_symbols.
7292 Also check to see if there are no code sections in the input.
7293 In this case there is no need to check for code specific flags.
7294 XXX - do we need to worry about floating-point format compatability
7295 in data sections ? */
7296 if (!(ibfd
->flags
& DYNAMIC
))
7298 bfd_boolean null_input_bfd
= TRUE
;
7299 bfd_boolean only_data_sections
= TRUE
;
7301 for (sec
= ibfd
->sections
; sec
!= NULL
; sec
= sec
->next
)
7303 if ((bfd_section_flags (sec
)
7304 & (SEC_LOAD
| SEC_CODE
| SEC_HAS_CONTENTS
))
7305 == (SEC_LOAD
| SEC_CODE
| SEC_HAS_CONTENTS
))
7306 only_data_sections
= FALSE
;
7308 null_input_bfd
= FALSE
;
7312 if (null_input_bfd
|| only_data_sections
)
7316 return flags_compatible
;
7319 /* Display the flags field. */
7322 elfNN_aarch64_print_private_bfd_data (bfd
*abfd
, void *ptr
)
7324 FILE *file
= (FILE *) ptr
;
7325 unsigned long flags
;
7327 BFD_ASSERT (abfd
!= NULL
&& ptr
!= NULL
);
7329 /* Print normal ELF private data. */
7330 _bfd_elf_print_private_bfd_data (abfd
, ptr
);
7332 flags
= elf_elfheader (abfd
)->e_flags
;
7333 /* Ignore init flag - it may not be set, despite the flags field
7334 containing valid data. */
7336 /* xgettext:c-format */
7337 fprintf (file
, _("private flags = %lx:"), elf_elfheader (abfd
)->e_flags
);
7340 fprintf (file
, _("<Unrecognised flag bits set>"));
7347 /* Find dynamic relocs for H that apply to read-only sections. */
7350 readonly_dynrelocs (struct elf_link_hash_entry
*h
)
7352 struct elf_dyn_relocs
*p
;
7354 for (p
= elf_aarch64_hash_entry (h
)->dyn_relocs
; p
!= NULL
; p
= p
->next
)
7356 asection
*s
= p
->sec
->output_section
;
7358 if (s
!= NULL
&& (s
->flags
& SEC_READONLY
) != 0)
7364 /* Return true if we need copy relocation against EH. */
7367 need_copy_relocation_p (struct elf_aarch64_link_hash_entry
*eh
)
7369 struct elf_dyn_relocs
*p
;
7372 for (p
= eh
->dyn_relocs
; p
!= NULL
; p
= p
->next
)
7374 /* If there is any pc-relative reference, we need to keep copy relocation
7375 to avoid propagating the relocation into runtime that current glibc
7376 does not support. */
7380 s
= p
->sec
->output_section
;
7381 /* Need copy relocation if it's against read-only section. */
7382 if (s
!= NULL
&& (s
->flags
& SEC_READONLY
) != 0)
7389 /* Adjust a symbol defined by a dynamic object and referenced by a
7390 regular object. The current definition is in some section of the
7391 dynamic object, but we're not including those sections. We have to
7392 change the definition to something the rest of the link can
7396 elfNN_aarch64_adjust_dynamic_symbol (struct bfd_link_info
*info
,
7397 struct elf_link_hash_entry
*h
)
7399 struct elf_aarch64_link_hash_table
*htab
;
7402 /* If this is a function, put it in the procedure linkage table. We
7403 will fill in the contents of the procedure linkage table later,
7404 when we know the address of the .got section. */
7405 if (h
->type
== STT_FUNC
|| h
->type
== STT_GNU_IFUNC
|| h
->needs_plt
)
7407 if (h
->plt
.refcount
<= 0
7408 || (h
->type
!= STT_GNU_IFUNC
7409 && (SYMBOL_CALLS_LOCAL (info
, h
)
7410 || (ELF_ST_VISIBILITY (h
->other
) != STV_DEFAULT
7411 && h
->root
.type
== bfd_link_hash_undefweak
))))
7413 /* This case can occur if we saw a CALL26 reloc in
7414 an input file, but the symbol wasn't referred to
7415 by a dynamic object or all references were
7416 garbage collected. In which case we can end up
7418 h
->plt
.offset
= (bfd_vma
) - 1;
7425 /* Otherwise, reset to -1. */
7426 h
->plt
.offset
= (bfd_vma
) - 1;
7429 /* If this is a weak symbol, and there is a real definition, the
7430 processor independent code will have arranged for us to see the
7431 real definition first, and we can just use the same value. */
7432 if (h
->is_weakalias
)
7434 struct elf_link_hash_entry
*def
= weakdef (h
);
7435 BFD_ASSERT (def
->root
.type
== bfd_link_hash_defined
);
7436 h
->root
.u
.def
.section
= def
->root
.u
.def
.section
;
7437 h
->root
.u
.def
.value
= def
->root
.u
.def
.value
;
7438 if (ELIMINATE_COPY_RELOCS
|| info
->nocopyreloc
)
7439 h
->non_got_ref
= def
->non_got_ref
;
7443 /* If we are creating a shared library, we must presume that the
7444 only references to the symbol are via the global offset table.
7445 For such cases we need not do anything here; the relocations will
7446 be handled correctly by relocate_section. */
7447 if (bfd_link_pic (info
))
7450 /* If there are no references to this symbol that do not use the
7451 GOT, we don't need to generate a copy reloc. */
7452 if (!h
->non_got_ref
)
7455 /* If -z nocopyreloc was given, we won't generate them either. */
7456 if (info
->nocopyreloc
)
7462 if (ELIMINATE_COPY_RELOCS
)
7464 struct elf_aarch64_link_hash_entry
*eh
;
7465 /* If we don't find any dynamic relocs in read-only sections, then
7466 we'll be keeping the dynamic relocs and avoiding the copy reloc. */
7467 eh
= (struct elf_aarch64_link_hash_entry
*) h
;
7468 if (!need_copy_relocation_p (eh
))
7475 /* We must allocate the symbol in our .dynbss section, which will
7476 become part of the .bss section of the executable. There will be
7477 an entry for this symbol in the .dynsym section. The dynamic
7478 object will contain position independent code, so all references
7479 from the dynamic object to this symbol will go through the global
7480 offset table. The dynamic linker will use the .dynsym entry to
7481 determine the address it must put in the global offset table, so
7482 both the dynamic object and the regular object will refer to the
7483 same memory location for the variable. */
7485 htab
= elf_aarch64_hash_table (info
);
7487 /* We must generate a R_AARCH64_COPY reloc to tell the dynamic linker
7488 to copy the initial value out of the dynamic object and into the
7489 runtime process image. */
7490 if ((h
->root
.u
.def
.section
->flags
& SEC_READONLY
) != 0)
7492 s
= htab
->root
.sdynrelro
;
7493 srel
= htab
->root
.sreldynrelro
;
7497 s
= htab
->root
.sdynbss
;
7498 srel
= htab
->root
.srelbss
;
7500 if ((h
->root
.u
.def
.section
->flags
& SEC_ALLOC
) != 0 && h
->size
!= 0)
7502 srel
->size
+= RELOC_SIZE (htab
);
7506 return _bfd_elf_adjust_dynamic_copy (info
, h
, s
);
7511 elfNN_aarch64_allocate_local_symbols (bfd
*abfd
, unsigned number
)
7513 struct elf_aarch64_local_symbol
*locals
;
7514 locals
= elf_aarch64_locals (abfd
);
7517 locals
= (struct elf_aarch64_local_symbol
*)
7518 bfd_zalloc (abfd
, number
* sizeof (struct elf_aarch64_local_symbol
));
7521 elf_aarch64_locals (abfd
) = locals
;
7526 /* Create the .got section to hold the global offset table. */
7529 aarch64_elf_create_got_section (bfd
*abfd
, struct bfd_link_info
*info
)
7531 const struct elf_backend_data
*bed
= get_elf_backend_data (abfd
);
7534 struct elf_link_hash_entry
*h
;
7535 struct elf_link_hash_table
*htab
= elf_hash_table (info
);
7537 /* This function may be called more than once. */
7538 if (htab
->sgot
!= NULL
)
7541 flags
= bed
->dynamic_sec_flags
;
7543 s
= bfd_make_section_anyway_with_flags (abfd
,
7544 (bed
->rela_plts_and_copies_p
7545 ? ".rela.got" : ".rel.got"),
7546 (bed
->dynamic_sec_flags
7549 || !bfd_set_section_alignment (s
, bed
->s
->log_file_align
))
7553 s
= bfd_make_section_anyway_with_flags (abfd
, ".got", flags
);
7555 || !bfd_set_section_alignment (s
, bed
->s
->log_file_align
))
7558 htab
->sgot
->size
+= GOT_ENTRY_SIZE
;
7560 if (bed
->want_got_sym
)
7562 /* Define the symbol _GLOBAL_OFFSET_TABLE_ at the start of the .got
7563 (or .got.plt) section. We don't do this in the linker script
7564 because we don't want to define the symbol if we are not creating
7565 a global offset table. */
7566 h
= _bfd_elf_define_linkage_sym (abfd
, info
, s
,
7567 "_GLOBAL_OFFSET_TABLE_");
7568 elf_hash_table (info
)->hgot
= h
;
7573 if (bed
->want_got_plt
)
7575 s
= bfd_make_section_anyway_with_flags (abfd
, ".got.plt", flags
);
7577 || !bfd_set_section_alignment (s
, bed
->s
->log_file_align
))
7582 /* The first bit of the global offset table is the header. */
7583 s
->size
+= bed
->got_header_size
;
7588 /* Look through the relocs for a section during the first phase. */
7591 elfNN_aarch64_check_relocs (bfd
*abfd
, struct bfd_link_info
*info
,
7592 asection
*sec
, const Elf_Internal_Rela
*relocs
)
7594 Elf_Internal_Shdr
*symtab_hdr
;
7595 struct elf_link_hash_entry
**sym_hashes
;
7596 const Elf_Internal_Rela
*rel
;
7597 const Elf_Internal_Rela
*rel_end
;
7600 struct elf_aarch64_link_hash_table
*htab
;
7602 if (bfd_link_relocatable (info
))
7605 BFD_ASSERT (is_aarch64_elf (abfd
));
7607 htab
= elf_aarch64_hash_table (info
);
7610 symtab_hdr
= &elf_symtab_hdr (abfd
);
7611 sym_hashes
= elf_sym_hashes (abfd
);
7613 rel_end
= relocs
+ sec
->reloc_count
;
7614 for (rel
= relocs
; rel
< rel_end
; rel
++)
7616 struct elf_link_hash_entry
*h
;
7617 unsigned int r_symndx
;
7618 unsigned int r_type
;
7619 bfd_reloc_code_real_type bfd_r_type
;
7620 Elf_Internal_Sym
*isym
;
7622 r_symndx
= ELFNN_R_SYM (rel
->r_info
);
7623 r_type
= ELFNN_R_TYPE (rel
->r_info
);
7625 if (r_symndx
>= NUM_SHDR_ENTRIES (symtab_hdr
))
7627 /* xgettext:c-format */
7628 _bfd_error_handler (_("%pB: bad symbol index: %d"), abfd
, r_symndx
);
7632 if (r_symndx
< symtab_hdr
->sh_info
)
7634 /* A local symbol. */
7635 isym
= bfd_sym_from_r_symndx (&htab
->sym_cache
,
7640 /* Check relocation against local STT_GNU_IFUNC symbol. */
7641 if (ELF_ST_TYPE (isym
->st_info
) == STT_GNU_IFUNC
)
7643 h
= elfNN_aarch64_get_local_sym_hash (htab
, abfd
, rel
,
7648 /* Fake a STT_GNU_IFUNC symbol. */
7649 h
->type
= STT_GNU_IFUNC
;
7652 h
->forced_local
= 1;
7653 h
->root
.type
= bfd_link_hash_defined
;
7660 h
= sym_hashes
[r_symndx
- symtab_hdr
->sh_info
];
7661 while (h
->root
.type
== bfd_link_hash_indirect
7662 || h
->root
.type
== bfd_link_hash_warning
)
7663 h
= (struct elf_link_hash_entry
*) h
->root
.u
.i
.link
;
7666 /* Could be done earlier, if h were already available. */
7667 bfd_r_type
= aarch64_tls_transition (abfd
, info
, r_type
, h
, r_symndx
);
7671 /* If a relocation refers to _GLOBAL_OFFSET_TABLE_, create the .got.
7672 This shows up in particular in an R_AARCH64_PREL64 in large model
7673 when calculating the pc-relative address to .got section which is
7674 used to initialize the gp register. */
7675 if (h
->root
.root
.string
7676 && strcmp (h
->root
.root
.string
, "_GLOBAL_OFFSET_TABLE_") == 0)
7678 if (htab
->root
.dynobj
== NULL
)
7679 htab
->root
.dynobj
= abfd
;
7681 if (! aarch64_elf_create_got_section (htab
->root
.dynobj
, info
))
7684 BFD_ASSERT (h
== htab
->root
.hgot
);
7687 /* Create the ifunc sections for static executables. If we
7688 never see an indirect function symbol nor we are building
7689 a static executable, those sections will be empty and
7690 won't appear in output. */
7696 case BFD_RELOC_AARCH64_ADD_LO12
:
7697 case BFD_RELOC_AARCH64_ADR_GOT_PAGE
:
7698 case BFD_RELOC_AARCH64_ADR_HI21_PCREL
:
7699 case BFD_RELOC_AARCH64_CALL26
:
7700 case BFD_RELOC_AARCH64_GOT_LD_PREL19
:
7701 case BFD_RELOC_AARCH64_JUMP26
:
7702 case BFD_RELOC_AARCH64_LD32_GOTPAGE_LO14
:
7703 case BFD_RELOC_AARCH64_LD32_GOT_LO12_NC
:
7704 case BFD_RELOC_AARCH64_LD64_GOTOFF_LO15
:
7705 case BFD_RELOC_AARCH64_LD64_GOTPAGE_LO15
:
7706 case BFD_RELOC_AARCH64_LD64_GOT_LO12_NC
:
7707 case BFD_RELOC_AARCH64_MOVW_GOTOFF_G0_NC
:
7708 case BFD_RELOC_AARCH64_MOVW_GOTOFF_G1
:
7709 case BFD_RELOC_AARCH64_NN
:
7710 if (htab
->root
.dynobj
== NULL
)
7711 htab
->root
.dynobj
= abfd
;
7712 if (!_bfd_elf_create_ifunc_sections (htab
->root
.dynobj
, info
))
7717 /* It is referenced by a non-shared object. */
7723 case BFD_RELOC_AARCH64_16
:
7725 case BFD_RELOC_AARCH64_32
:
7727 if (bfd_link_pic (info
) && (sec
->flags
& SEC_ALLOC
) != 0)
7730 /* This is an absolute symbol. It represents a value instead
7732 && (bfd_is_abs_symbol (&h
->root
)
7733 /* This is an undefined symbol. */
7734 || h
->root
.type
== bfd_link_hash_undefined
))
7737 /* For local symbols, defined global symbols in a non-ABS section,
7738 it is assumed that the value is an address. */
7739 int howto_index
= bfd_r_type
- BFD_RELOC_AARCH64_RELOC_START
;
7741 /* xgettext:c-format */
7742 (_("%pB: relocation %s against `%s' can not be used when making "
7744 abfd
, elfNN_aarch64_howto_table
[howto_index
].name
,
7745 (h
) ? h
->root
.root
.string
: "a local symbol");
7746 bfd_set_error (bfd_error_bad_value
);
7752 case BFD_RELOC_AARCH64_MOVW_G0_NC
:
7753 case BFD_RELOC_AARCH64_MOVW_G1_NC
:
7754 case BFD_RELOC_AARCH64_MOVW_G2_NC
:
7755 case BFD_RELOC_AARCH64_MOVW_G3
:
7756 if (bfd_link_pic (info
))
7758 int howto_index
= bfd_r_type
- BFD_RELOC_AARCH64_RELOC_START
;
7760 /* xgettext:c-format */
7761 (_("%pB: relocation %s against `%s' can not be used when making "
7762 "a shared object; recompile with -fPIC"),
7763 abfd
, elfNN_aarch64_howto_table
[howto_index
].name
,
7764 (h
) ? h
->root
.root
.string
: "a local symbol");
7765 bfd_set_error (bfd_error_bad_value
);
7770 case BFD_RELOC_AARCH64_16_PCREL
:
7771 case BFD_RELOC_AARCH64_32_PCREL
:
7772 case BFD_RELOC_AARCH64_64_PCREL
:
7773 case BFD_RELOC_AARCH64_ADD_LO12
:
7774 case BFD_RELOC_AARCH64_ADR_HI21_NC_PCREL
:
7775 case BFD_RELOC_AARCH64_ADR_HI21_PCREL
:
7776 case BFD_RELOC_AARCH64_ADR_LO21_PCREL
:
7777 case BFD_RELOC_AARCH64_LDST128_LO12
:
7778 case BFD_RELOC_AARCH64_LDST16_LO12
:
7779 case BFD_RELOC_AARCH64_LDST32_LO12
:
7780 case BFD_RELOC_AARCH64_LDST64_LO12
:
7781 case BFD_RELOC_AARCH64_LDST8_LO12
:
7782 case BFD_RELOC_AARCH64_LD_LO19_PCREL
:
7783 if (h
== NULL
|| bfd_link_pic (info
))
7787 case BFD_RELOC_AARCH64_NN
:
7789 /* We don't need to handle relocs into sections not going into
7790 the "real" output. */
7791 if ((sec
->flags
& SEC_ALLOC
) == 0)
7796 if (!bfd_link_pic (info
))
7799 h
->plt
.refcount
+= 1;
7800 h
->pointer_equality_needed
= 1;
7803 /* No need to do anything if we're not creating a shared
7805 if (!(bfd_link_pic (info
)
7806 /* If on the other hand, we are creating an executable, we
7807 may need to keep relocations for symbols satisfied by a
7808 dynamic library if we manage to avoid copy relocs for the
7811 NOTE: Currently, there is no support of copy relocs
7812 elimination on pc-relative relocation types, because there is
7813 no dynamic relocation support for them in glibc. We still
7814 record the dynamic symbol reference for them. This is
7815 because one symbol may be referenced by both absolute
7816 relocation (for example, BFD_RELOC_AARCH64_NN) and
7817 pc-relative relocation. We need full symbol reference
7818 information to make correct decision later in
7819 elfNN_aarch64_adjust_dynamic_symbol. */
7820 || (ELIMINATE_COPY_RELOCS
7821 && !bfd_link_pic (info
)
7823 && (h
->root
.type
== bfd_link_hash_defweak
7824 || !h
->def_regular
))))
7828 struct elf_dyn_relocs
*p
;
7829 struct elf_dyn_relocs
**head
;
7830 int howto_index
= bfd_r_type
- BFD_RELOC_AARCH64_RELOC_START
;
7832 /* We must copy these reloc types into the output file.
7833 Create a reloc section in dynobj and make room for
7837 if (htab
->root
.dynobj
== NULL
)
7838 htab
->root
.dynobj
= abfd
;
7840 sreloc
= _bfd_elf_make_dynamic_reloc_section
7841 (sec
, htab
->root
.dynobj
, LOG_FILE_ALIGN
, abfd
, /*rela? */ TRUE
);
7847 /* If this is a global symbol, we count the number of
7848 relocations we need for this symbol. */
7851 struct elf_aarch64_link_hash_entry
*eh
;
7852 eh
= (struct elf_aarch64_link_hash_entry
*) h
;
7853 head
= &eh
->dyn_relocs
;
7857 /* Track dynamic relocs needed for local syms too.
7858 We really need local syms available to do this
7864 isym
= bfd_sym_from_r_symndx (&htab
->sym_cache
,
7869 s
= bfd_section_from_elf_index (abfd
, isym
->st_shndx
);
7873 /* Beware of type punned pointers vs strict aliasing
7875 vpp
= &(elf_section_data (s
)->local_dynrel
);
7876 head
= (struct elf_dyn_relocs
**) vpp
;
7880 if (p
== NULL
|| p
->sec
!= sec
)
7882 size_t amt
= sizeof *p
;
7883 p
= ((struct elf_dyn_relocs
*)
7884 bfd_zalloc (htab
->root
.dynobj
, amt
));
7894 if (elfNN_aarch64_howto_table
[howto_index
].pc_relative
)
7899 /* RR: We probably want to keep a consistency check that
7900 there are no dangling GOT_PAGE relocs. */
7901 case BFD_RELOC_AARCH64_ADR_GOT_PAGE
:
7902 case BFD_RELOC_AARCH64_GOT_LD_PREL19
:
7903 case BFD_RELOC_AARCH64_LD32_GOTPAGE_LO14
:
7904 case BFD_RELOC_AARCH64_LD32_GOT_LO12_NC
:
7905 case BFD_RELOC_AARCH64_LD64_GOTOFF_LO15
:
7906 case BFD_RELOC_AARCH64_LD64_GOTPAGE_LO15
:
7907 case BFD_RELOC_AARCH64_LD64_GOT_LO12_NC
:
7908 case BFD_RELOC_AARCH64_MOVW_GOTOFF_G0_NC
:
7909 case BFD_RELOC_AARCH64_MOVW_GOTOFF_G1
:
7910 case BFD_RELOC_AARCH64_TLSDESC_ADD_LO12
:
7911 case BFD_RELOC_AARCH64_TLSDESC_ADR_PAGE21
:
7912 case BFD_RELOC_AARCH64_TLSDESC_ADR_PREL21
:
7913 case BFD_RELOC_AARCH64_TLSDESC_LD32_LO12_NC
:
7914 case BFD_RELOC_AARCH64_TLSDESC_LD64_LO12
:
7915 case BFD_RELOC_AARCH64_TLSDESC_LD_PREL19
:
7916 case BFD_RELOC_AARCH64_TLSDESC_OFF_G0_NC
:
7917 case BFD_RELOC_AARCH64_TLSDESC_OFF_G1
:
7918 case BFD_RELOC_AARCH64_TLSGD_ADD_LO12_NC
:
7919 case BFD_RELOC_AARCH64_TLSGD_ADR_PAGE21
:
7920 case BFD_RELOC_AARCH64_TLSGD_ADR_PREL21
:
7921 case BFD_RELOC_AARCH64_TLSGD_MOVW_G0_NC
:
7922 case BFD_RELOC_AARCH64_TLSGD_MOVW_G1
:
7923 case BFD_RELOC_AARCH64_TLSIE_ADR_GOTTPREL_PAGE21
:
7924 case BFD_RELOC_AARCH64_TLSIE_LD32_GOTTPREL_LO12_NC
:
7925 case BFD_RELOC_AARCH64_TLSIE_LD64_GOTTPREL_LO12_NC
:
7926 case BFD_RELOC_AARCH64_TLSIE_LD_GOTTPREL_PREL19
:
7927 case BFD_RELOC_AARCH64_TLSIE_MOVW_GOTTPREL_G0_NC
:
7928 case BFD_RELOC_AARCH64_TLSIE_MOVW_GOTTPREL_G1
:
7929 case BFD_RELOC_AARCH64_TLSLD_ADD_LO12_NC
:
7930 case BFD_RELOC_AARCH64_TLSLD_ADR_PAGE21
:
7931 case BFD_RELOC_AARCH64_TLSLD_ADR_PREL21
:
7934 unsigned old_got_type
;
7936 got_type
= aarch64_reloc_got_type (bfd_r_type
);
7940 h
->got
.refcount
+= 1;
7941 old_got_type
= elf_aarch64_hash_entry (h
)->got_type
;
7945 struct elf_aarch64_local_symbol
*locals
;
7947 if (!elfNN_aarch64_allocate_local_symbols
7948 (abfd
, symtab_hdr
->sh_info
))
7951 locals
= elf_aarch64_locals (abfd
);
7952 BFD_ASSERT (r_symndx
< symtab_hdr
->sh_info
);
7953 locals
[r_symndx
].got_refcount
+= 1;
7954 old_got_type
= locals
[r_symndx
].got_type
;
7957 /* If a variable is accessed with both general dynamic TLS
7958 methods, two slots may be created. */
7959 if (GOT_TLS_GD_ANY_P (old_got_type
) && GOT_TLS_GD_ANY_P (got_type
))
7960 got_type
|= old_got_type
;
7962 /* We will already have issued an error message if there
7963 is a TLS/non-TLS mismatch, based on the symbol type.
7964 So just combine any TLS types needed. */
7965 if (old_got_type
!= GOT_UNKNOWN
&& old_got_type
!= GOT_NORMAL
7966 && got_type
!= GOT_NORMAL
)
7967 got_type
|= old_got_type
;
7969 /* If the symbol is accessed by both IE and GD methods, we
7970 are able to relax. Turn off the GD flag, without
7971 messing up with any other kind of TLS types that may be
7973 if ((got_type
& GOT_TLS_IE
) && GOT_TLS_GD_ANY_P (got_type
))
7974 got_type
&= ~ (GOT_TLSDESC_GD
| GOT_TLS_GD
);
7976 if (old_got_type
!= got_type
)
7979 elf_aarch64_hash_entry (h
)->got_type
= got_type
;
7982 struct elf_aarch64_local_symbol
*locals
;
7983 locals
= elf_aarch64_locals (abfd
);
7984 BFD_ASSERT (r_symndx
< symtab_hdr
->sh_info
);
7985 locals
[r_symndx
].got_type
= got_type
;
7989 if (htab
->root
.dynobj
== NULL
)
7990 htab
->root
.dynobj
= abfd
;
7991 if (! aarch64_elf_create_got_section (htab
->root
.dynobj
, info
))
7996 case BFD_RELOC_AARCH64_CALL26
:
7997 case BFD_RELOC_AARCH64_JUMP26
:
7998 /* If this is a local symbol then we resolve it
7999 directly without creating a PLT entry. */
8004 if (h
->plt
.refcount
<= 0)
8005 h
->plt
.refcount
= 1;
8007 h
->plt
.refcount
+= 1;
8018 /* Treat mapping symbols as special target symbols. */
8021 elfNN_aarch64_is_target_special_symbol (bfd
*abfd ATTRIBUTE_UNUSED
,
8024 return bfd_is_aarch64_special_symbol_name (sym
->name
,
8025 BFD_AARCH64_SPECIAL_SYM_TYPE_ANY
);
8028 /* If the ELF symbol SYM might be a function in SEC, return the
8029 function size and set *CODE_OFF to the function's entry point,
8030 otherwise return zero. */
8032 static bfd_size_type
8033 elfNN_aarch64_maybe_function_sym (const asymbol
*sym
, asection
*sec
,
8038 if ((sym
->flags
& (BSF_SECTION_SYM
| BSF_FILE
| BSF_OBJECT
8039 | BSF_THREAD_LOCAL
| BSF_RELC
| BSF_SRELC
)) != 0
8040 || sym
->section
!= sec
)
8043 if (!(sym
->flags
& BSF_SYNTHETIC
))
8044 switch (ELF_ST_TYPE (((elf_symbol_type
*) sym
)->internal_elf_sym
.st_info
))
8053 if ((sym
->flags
& BSF_LOCAL
)
8054 && bfd_is_aarch64_special_symbol_name (sym
->name
,
8055 BFD_AARCH64_SPECIAL_SYM_TYPE_ANY
))
8058 *code_off
= sym
->value
;
8060 if (!(sym
->flags
& BSF_SYNTHETIC
))
8061 size
= ((elf_symbol_type
*) sym
)->internal_elf_sym
.st_size
;
8068 elfNN_aarch64_find_inliner_info (bfd
*abfd
,
8069 const char **filename_ptr
,
8070 const char **functionname_ptr
,
8071 unsigned int *line_ptr
)
8074 found
= _bfd_dwarf2_find_inliner_info
8075 (abfd
, filename_ptr
,
8076 functionname_ptr
, line_ptr
, &elf_tdata (abfd
)->dwarf2_find_line_info
);
8082 elfNN_aarch64_init_file_header (bfd
*abfd
, struct bfd_link_info
*link_info
)
8084 Elf_Internal_Ehdr
*i_ehdrp
; /* ELF file header, internal form. */
8086 if (!_bfd_elf_init_file_header (abfd
, link_info
))
8089 i_ehdrp
= elf_elfheader (abfd
);
8090 i_ehdrp
->e_ident
[EI_ABIVERSION
] = AARCH64_ELF_ABI_VERSION
;
8094 static enum elf_reloc_type_class
8095 elfNN_aarch64_reloc_type_class (const struct bfd_link_info
*info ATTRIBUTE_UNUSED
,
8096 const asection
*rel_sec ATTRIBUTE_UNUSED
,
8097 const Elf_Internal_Rela
*rela
)
8099 struct elf_aarch64_link_hash_table
*htab
= elf_aarch64_hash_table (info
);
8101 if (htab
->root
.dynsym
!= NULL
8102 && htab
->root
.dynsym
->contents
!= NULL
)
8104 /* Check relocation against STT_GNU_IFUNC symbol if there are
8106 bfd
*abfd
= info
->output_bfd
;
8107 const struct elf_backend_data
*bed
= get_elf_backend_data (abfd
);
8108 unsigned long r_symndx
= ELFNN_R_SYM (rela
->r_info
);
8109 if (r_symndx
!= STN_UNDEF
)
8111 Elf_Internal_Sym sym
;
8112 if (!bed
->s
->swap_symbol_in (abfd
,
8113 (htab
->root
.dynsym
->contents
8114 + r_symndx
* bed
->s
->sizeof_sym
),
8117 /* xgettext:c-format */
8118 _bfd_error_handler (_("%pB symbol number %lu references"
8119 " nonexistent SHT_SYMTAB_SHNDX section"),
8121 /* Ideally an error class should be returned here. */
8123 else if (ELF_ST_TYPE (sym
.st_info
) == STT_GNU_IFUNC
)
8124 return reloc_class_ifunc
;
8128 switch ((int) ELFNN_R_TYPE (rela
->r_info
))
8130 case AARCH64_R (IRELATIVE
):
8131 return reloc_class_ifunc
;
8132 case AARCH64_R (RELATIVE
):
8133 return reloc_class_relative
;
8134 case AARCH64_R (JUMP_SLOT
):
8135 return reloc_class_plt
;
8136 case AARCH64_R (COPY
):
8137 return reloc_class_copy
;
8139 return reloc_class_normal
;
8143 /* Handle an AArch64 specific section when reading an object file. This is
8144 called when bfd_section_from_shdr finds a section with an unknown
8148 elfNN_aarch64_section_from_shdr (bfd
*abfd
,
8149 Elf_Internal_Shdr
*hdr
,
8150 const char *name
, int shindex
)
8152 /* There ought to be a place to keep ELF backend specific flags, but
8153 at the moment there isn't one. We just keep track of the
8154 sections by their name, instead. Fortunately, the ABI gives
8155 names for all the AArch64 specific sections, so we will probably get
8157 switch (hdr
->sh_type
)
8159 case SHT_AARCH64_ATTRIBUTES
:
8166 if (!_bfd_elf_make_section_from_shdr (abfd
, hdr
, name
, shindex
))
8172 /* A structure used to record a list of sections, independently
8173 of the next and prev fields in the asection structure. */
8174 typedef struct section_list
8177 struct section_list
*next
;
8178 struct section_list
*prev
;
8182 /* Unfortunately we need to keep a list of sections for which
8183 an _aarch64_elf_section_data structure has been allocated. This
8184 is because it is possible for functions like elfNN_aarch64_write_section
8185 to be called on a section which has had an elf_data_structure
8186 allocated for it (and so the used_by_bfd field is valid) but
8187 for which the AArch64 extended version of this structure - the
8188 _aarch64_elf_section_data structure - has not been allocated. */
8189 static section_list
*sections_with_aarch64_elf_section_data
= NULL
;
8192 record_section_with_aarch64_elf_section_data (asection
*sec
)
8194 struct section_list
*entry
;
8196 entry
= bfd_malloc (sizeof (*entry
));
8200 entry
->next
= sections_with_aarch64_elf_section_data
;
8202 if (entry
->next
!= NULL
)
8203 entry
->next
->prev
= entry
;
8204 sections_with_aarch64_elf_section_data
= entry
;
8207 static struct section_list
*
8208 find_aarch64_elf_section_entry (asection
*sec
)
8210 struct section_list
*entry
;
8211 static struct section_list
*last_entry
= NULL
;
8213 /* This is a short cut for the typical case where the sections are added
8214 to the sections_with_aarch64_elf_section_data list in forward order and
8215 then looked up here in backwards order. This makes a real difference
8216 to the ld-srec/sec64k.exp linker test. */
8217 entry
= sections_with_aarch64_elf_section_data
;
8218 if (last_entry
!= NULL
)
8220 if (last_entry
->sec
== sec
)
8222 else if (last_entry
->next
!= NULL
&& last_entry
->next
->sec
== sec
)
8223 entry
= last_entry
->next
;
8226 for (; entry
; entry
= entry
->next
)
8227 if (entry
->sec
== sec
)
8231 /* Record the entry prior to this one - it is the entry we are
8232 most likely to want to locate next time. Also this way if we
8233 have been called from
8234 unrecord_section_with_aarch64_elf_section_data () we will not
8235 be caching a pointer that is about to be freed. */
8236 last_entry
= entry
->prev
;
8242 unrecord_section_with_aarch64_elf_section_data (asection
*sec
)
8244 struct section_list
*entry
;
8246 entry
= find_aarch64_elf_section_entry (sec
);
8250 if (entry
->prev
!= NULL
)
8251 entry
->prev
->next
= entry
->next
;
8252 if (entry
->next
!= NULL
)
8253 entry
->next
->prev
= entry
->prev
;
8254 if (entry
== sections_with_aarch64_elf_section_data
)
8255 sections_with_aarch64_elf_section_data
= entry
->next
;
8264 struct bfd_link_info
*info
;
8267 int (*func
) (void *, const char *, Elf_Internal_Sym
*,
8268 asection
*, struct elf_link_hash_entry
*);
8269 } output_arch_syminfo
;
8271 enum map_symbol_type
8278 /* Output a single mapping symbol. */
8281 elfNN_aarch64_output_map_sym (output_arch_syminfo
*osi
,
8282 enum map_symbol_type type
, bfd_vma offset
)
8284 static const char *names
[2] = { "$x", "$d" };
8285 Elf_Internal_Sym sym
;
8287 sym
.st_value
= (osi
->sec
->output_section
->vma
8288 + osi
->sec
->output_offset
+ offset
);
8291 sym
.st_info
= ELF_ST_INFO (STB_LOCAL
, STT_NOTYPE
);
8292 sym
.st_shndx
= osi
->sec_shndx
;
8293 return osi
->func (osi
->finfo
, names
[type
], &sym
, osi
->sec
, NULL
) == 1;
8296 /* Output a single local symbol for a generated stub. */
8299 elfNN_aarch64_output_stub_sym (output_arch_syminfo
*osi
, const char *name
,
8300 bfd_vma offset
, bfd_vma size
)
8302 Elf_Internal_Sym sym
;
8304 sym
.st_value
= (osi
->sec
->output_section
->vma
8305 + osi
->sec
->output_offset
+ offset
);
8308 sym
.st_info
= ELF_ST_INFO (STB_LOCAL
, STT_FUNC
);
8309 sym
.st_shndx
= osi
->sec_shndx
;
8310 return osi
->func (osi
->finfo
, name
, &sym
, osi
->sec
, NULL
) == 1;
8314 aarch64_map_one_stub (struct bfd_hash_entry
*gen_entry
, void *in_arg
)
8316 struct elf_aarch64_stub_hash_entry
*stub_entry
;
8320 output_arch_syminfo
*osi
;
8322 /* Massage our args to the form they really have. */
8323 stub_entry
= (struct elf_aarch64_stub_hash_entry
*) gen_entry
;
8324 osi
= (output_arch_syminfo
*) in_arg
;
8326 stub_sec
= stub_entry
->stub_sec
;
8328 /* Ensure this stub is attached to the current section being
8330 if (stub_sec
!= osi
->sec
)
8333 addr
= (bfd_vma
) stub_entry
->stub_offset
;
8335 stub_name
= stub_entry
->output_name
;
8337 switch (stub_entry
->stub_type
)
8339 case aarch64_stub_adrp_branch
:
8340 if (!elfNN_aarch64_output_stub_sym (osi
, stub_name
, addr
,
8341 sizeof (aarch64_adrp_branch_stub
)))
8343 if (!elfNN_aarch64_output_map_sym (osi
, AARCH64_MAP_INSN
, addr
))
8346 case aarch64_stub_long_branch
:
8347 if (!elfNN_aarch64_output_stub_sym
8348 (osi
, stub_name
, addr
, sizeof (aarch64_long_branch_stub
)))
8350 if (!elfNN_aarch64_output_map_sym (osi
, AARCH64_MAP_INSN
, addr
))
8352 if (!elfNN_aarch64_output_map_sym (osi
, AARCH64_MAP_DATA
, addr
+ 16))
8355 case aarch64_stub_erratum_835769_veneer
:
8356 if (!elfNN_aarch64_output_stub_sym (osi
, stub_name
, addr
,
8357 sizeof (aarch64_erratum_835769_stub
)))
8359 if (!elfNN_aarch64_output_map_sym (osi
, AARCH64_MAP_INSN
, addr
))
8362 case aarch64_stub_erratum_843419_veneer
:
8363 if (!elfNN_aarch64_output_stub_sym (osi
, stub_name
, addr
,
8364 sizeof (aarch64_erratum_843419_stub
)))
8366 if (!elfNN_aarch64_output_map_sym (osi
, AARCH64_MAP_INSN
, addr
))
8369 case aarch64_stub_none
:
8379 /* Output mapping symbols for linker generated sections. */
8382 elfNN_aarch64_output_arch_local_syms (bfd
*output_bfd
,
8383 struct bfd_link_info
*info
,
8385 int (*func
) (void *, const char *,
8388 struct elf_link_hash_entry
8391 output_arch_syminfo osi
;
8392 struct elf_aarch64_link_hash_table
*htab
;
8394 htab
= elf_aarch64_hash_table (info
);
8400 /* Long calls stubs. */
8401 if (htab
->stub_bfd
&& htab
->stub_bfd
->sections
)
8405 for (stub_sec
= htab
->stub_bfd
->sections
;
8406 stub_sec
!= NULL
; stub_sec
= stub_sec
->next
)
8408 /* Ignore non-stub sections. */
8409 if (!strstr (stub_sec
->name
, STUB_SUFFIX
))
8414 osi
.sec_shndx
= _bfd_elf_section_from_bfd_section
8415 (output_bfd
, osi
.sec
->output_section
);
8417 /* The first instruction in a stub is always a branch. */
8418 if (!elfNN_aarch64_output_map_sym (&osi
, AARCH64_MAP_INSN
, 0))
8421 bfd_hash_traverse (&htab
->stub_hash_table
, aarch64_map_one_stub
,
8426 /* Finally, output mapping symbols for the PLT. */
8427 if (!htab
->root
.splt
|| htab
->root
.splt
->size
== 0)
8430 osi
.sec_shndx
= _bfd_elf_section_from_bfd_section
8431 (output_bfd
, htab
->root
.splt
->output_section
);
8432 osi
.sec
= htab
->root
.splt
;
8434 elfNN_aarch64_output_map_sym (&osi
, AARCH64_MAP_INSN
, 0);
8440 /* Allocate target specific section data. */
8443 elfNN_aarch64_new_section_hook (bfd
*abfd
, asection
*sec
)
8445 if (!sec
->used_by_bfd
)
8447 _aarch64_elf_section_data
*sdata
;
8448 size_t amt
= sizeof (*sdata
);
8450 sdata
= bfd_zalloc (abfd
, amt
);
8453 sec
->used_by_bfd
= sdata
;
8456 record_section_with_aarch64_elf_section_data (sec
);
8458 return _bfd_elf_new_section_hook (abfd
, sec
);
8463 unrecord_section_via_map_over_sections (bfd
*abfd ATTRIBUTE_UNUSED
,
8465 void *ignore ATTRIBUTE_UNUSED
)
8467 unrecord_section_with_aarch64_elf_section_data (sec
);
8471 elfNN_aarch64_close_and_cleanup (bfd
*abfd
)
8474 bfd_map_over_sections (abfd
,
8475 unrecord_section_via_map_over_sections
, NULL
);
8477 return _bfd_elf_close_and_cleanup (abfd
);
8481 elfNN_aarch64_bfd_free_cached_info (bfd
*abfd
)
8484 bfd_map_over_sections (abfd
,
8485 unrecord_section_via_map_over_sections
, NULL
);
8487 return _bfd_free_cached_info (abfd
);
8490 /* Create dynamic sections. This is different from the ARM backend in that
8491 the got, plt, gotplt and their relocation sections are all created in the
8492 standard part of the bfd elf backend. */
8495 elfNN_aarch64_create_dynamic_sections (bfd
*dynobj
,
8496 struct bfd_link_info
*info
)
8498 /* We need to create .got section. */
8499 if (!aarch64_elf_create_got_section (dynobj
, info
))
8502 return _bfd_elf_create_dynamic_sections (dynobj
, info
);
8506 /* Allocate space in .plt, .got and associated reloc sections for
8510 elfNN_aarch64_allocate_dynrelocs (struct elf_link_hash_entry
*h
, void *inf
)
8512 struct bfd_link_info
*info
;
8513 struct elf_aarch64_link_hash_table
*htab
;
8514 struct elf_aarch64_link_hash_entry
*eh
;
8515 struct elf_dyn_relocs
*p
;
8517 /* An example of a bfd_link_hash_indirect symbol is versioned
8518 symbol. For example: __gxx_personality_v0(bfd_link_hash_indirect)
8519 -> __gxx_personality_v0(bfd_link_hash_defined)
8521 There is no need to process bfd_link_hash_indirect symbols here
8522 because we will also be presented with the concrete instance of
8523 the symbol and elfNN_aarch64_copy_indirect_symbol () will have been
8524 called to copy all relevant data from the generic to the concrete
8526 if (h
->root
.type
== bfd_link_hash_indirect
)
8529 if (h
->root
.type
== bfd_link_hash_warning
)
8530 h
= (struct elf_link_hash_entry
*) h
->root
.u
.i
.link
;
8532 info
= (struct bfd_link_info
*) inf
;
8533 htab
= elf_aarch64_hash_table (info
);
8535 /* Since STT_GNU_IFUNC symbol must go through PLT, we handle it
8536 here if it is defined and referenced in a non-shared object. */
8537 if (h
->type
== STT_GNU_IFUNC
8540 else if (htab
->root
.dynamic_sections_created
&& h
->plt
.refcount
> 0)
8542 /* Make sure this symbol is output as a dynamic symbol.
8543 Undefined weak syms won't yet be marked as dynamic. */
8544 if (h
->dynindx
== -1 && !h
->forced_local
8545 && h
->root
.type
== bfd_link_hash_undefweak
)
8547 if (!bfd_elf_link_record_dynamic_symbol (info
, h
))
8551 if (bfd_link_pic (info
) || WILL_CALL_FINISH_DYNAMIC_SYMBOL (1, 0, h
))
8553 asection
*s
= htab
->root
.splt
;
8555 /* If this is the first .plt entry, make room for the special
8558 s
->size
+= htab
->plt_header_size
;
8560 h
->plt
.offset
= s
->size
;
8562 /* If this symbol is not defined in a regular file, and we are
8563 not generating a shared library, then set the symbol to this
8564 location in the .plt. This is required to make function
8565 pointers compare as equal between the normal executable and
8566 the shared library. */
8567 if (!bfd_link_pic (info
) && !h
->def_regular
)
8569 h
->root
.u
.def
.section
= s
;
8570 h
->root
.u
.def
.value
= h
->plt
.offset
;
8573 /* Make room for this entry. For now we only create the
8574 small model PLT entries. We later need to find a way
8575 of relaxing into these from the large model PLT entries. */
8576 s
->size
+= htab
->plt_entry_size
;
8578 /* We also need to make an entry in the .got.plt section, which
8579 will be placed in the .got section by the linker script. */
8580 htab
->root
.sgotplt
->size
+= GOT_ENTRY_SIZE
;
8582 /* We also need to make an entry in the .rela.plt section. */
8583 htab
->root
.srelplt
->size
+= RELOC_SIZE (htab
);
8585 /* We need to ensure that all GOT entries that serve the PLT
8586 are consecutive with the special GOT slots [0] [1] and
8587 [2]. Any addtional relocations, such as
8588 R_AARCH64_TLSDESC, must be placed after the PLT related
8589 entries. We abuse the reloc_count such that during
8590 sizing we adjust reloc_count to indicate the number of
8591 PLT related reserved entries. In subsequent phases when
8592 filling in the contents of the reloc entries, PLT related
8593 entries are placed by computing their PLT index (0
8594 .. reloc_count). While other none PLT relocs are placed
8595 at the slot indicated by reloc_count and reloc_count is
8598 htab
->root
.srelplt
->reloc_count
++;
8600 /* Mark the DSO in case R_<CLS>_JUMP_SLOT relocs against
8601 variant PCS symbols are present. */
8602 if (h
->other
& STO_AARCH64_VARIANT_PCS
)
8603 htab
->variant_pcs
= 1;
8608 h
->plt
.offset
= (bfd_vma
) - 1;
8614 h
->plt
.offset
= (bfd_vma
) - 1;
8618 eh
= (struct elf_aarch64_link_hash_entry
*) h
;
8619 eh
->tlsdesc_got_jump_table_offset
= (bfd_vma
) - 1;
8621 if (h
->got
.refcount
> 0)
8624 unsigned got_type
= elf_aarch64_hash_entry (h
)->got_type
;
8626 h
->got
.offset
= (bfd_vma
) - 1;
8628 dyn
= htab
->root
.dynamic_sections_created
;
8630 /* Make sure this symbol is output as a dynamic symbol.
8631 Undefined weak syms won't yet be marked as dynamic. */
8632 if (dyn
&& h
->dynindx
== -1 && !h
->forced_local
8633 && h
->root
.type
== bfd_link_hash_undefweak
)
8635 if (!bfd_elf_link_record_dynamic_symbol (info
, h
))
8639 if (got_type
== GOT_UNKNOWN
)
8642 else if (got_type
== GOT_NORMAL
)
8644 h
->got
.offset
= htab
->root
.sgot
->size
;
8645 htab
->root
.sgot
->size
+= GOT_ENTRY_SIZE
;
8646 if ((ELF_ST_VISIBILITY (h
->other
) == STV_DEFAULT
8647 || h
->root
.type
!= bfd_link_hash_undefweak
)
8648 && (bfd_link_pic (info
)
8649 || WILL_CALL_FINISH_DYNAMIC_SYMBOL (dyn
, 0, h
))
8650 /* Undefined weak symbol in static PIE resolves to 0 without
8651 any dynamic relocations. */
8652 && !UNDEFWEAK_NO_DYNAMIC_RELOC (info
, h
))
8654 htab
->root
.srelgot
->size
+= RELOC_SIZE (htab
);
8660 if (got_type
& GOT_TLSDESC_GD
)
8662 eh
->tlsdesc_got_jump_table_offset
=
8663 (htab
->root
.sgotplt
->size
8664 - aarch64_compute_jump_table_size (htab
));
8665 htab
->root
.sgotplt
->size
+= GOT_ENTRY_SIZE
* 2;
8666 h
->got
.offset
= (bfd_vma
) - 2;
8669 if (got_type
& GOT_TLS_GD
)
8671 h
->got
.offset
= htab
->root
.sgot
->size
;
8672 htab
->root
.sgot
->size
+= GOT_ENTRY_SIZE
* 2;
8675 if (got_type
& GOT_TLS_IE
)
8677 h
->got
.offset
= htab
->root
.sgot
->size
;
8678 htab
->root
.sgot
->size
+= GOT_ENTRY_SIZE
;
8681 indx
= h
&& h
->dynindx
!= -1 ? h
->dynindx
: 0;
8682 if ((ELF_ST_VISIBILITY (h
->other
) == STV_DEFAULT
8683 || h
->root
.type
!= bfd_link_hash_undefweak
)
8684 && (!bfd_link_executable (info
)
8686 || WILL_CALL_FINISH_DYNAMIC_SYMBOL (dyn
, 0, h
)))
8688 if (got_type
& GOT_TLSDESC_GD
)
8690 htab
->root
.srelplt
->size
+= RELOC_SIZE (htab
);
8691 /* Note reloc_count not incremented here! We have
8692 already adjusted reloc_count for this relocation
8695 /* TLSDESC PLT is now needed, but not yet determined. */
8696 htab
->tlsdesc_plt
= (bfd_vma
) - 1;
8699 if (got_type
& GOT_TLS_GD
)
8700 htab
->root
.srelgot
->size
+= RELOC_SIZE (htab
) * 2;
8702 if (got_type
& GOT_TLS_IE
)
8703 htab
->root
.srelgot
->size
+= RELOC_SIZE (htab
);
8709 h
->got
.offset
= (bfd_vma
) - 1;
8712 if (eh
->dyn_relocs
== NULL
)
8715 /* In the shared -Bsymbolic case, discard space allocated for
8716 dynamic pc-relative relocs against symbols which turn out to be
8717 defined in regular objects. For the normal shared case, discard
8718 space for pc-relative relocs that have become local due to symbol
8719 visibility changes. */
8721 if (bfd_link_pic (info
))
8723 /* Relocs that use pc_count are those that appear on a call
8724 insn, or certain REL relocs that can generated via assembly.
8725 We want calls to protected symbols to resolve directly to the
8726 function rather than going via the plt. If people want
8727 function pointer comparisons to work as expected then they
8728 should avoid writing weird assembly. */
8729 if (SYMBOL_CALLS_LOCAL (info
, h
))
8731 struct elf_dyn_relocs
**pp
;
8733 for (pp
= &eh
->dyn_relocs
; (p
= *pp
) != NULL
;)
8735 p
->count
-= p
->pc_count
;
8744 /* Also discard relocs on undefined weak syms with non-default
8746 if (eh
->dyn_relocs
!= NULL
&& h
->root
.type
== bfd_link_hash_undefweak
)
8748 if (ELF_ST_VISIBILITY (h
->other
) != STV_DEFAULT
8749 || UNDEFWEAK_NO_DYNAMIC_RELOC (info
, h
))
8750 eh
->dyn_relocs
= NULL
;
8752 /* Make sure undefined weak symbols are output as a dynamic
8754 else if (h
->dynindx
== -1
8756 && h
->root
.type
== bfd_link_hash_undefweak
8757 && !bfd_elf_link_record_dynamic_symbol (info
, h
))
8762 else if (ELIMINATE_COPY_RELOCS
)
8764 /* For the non-shared case, discard space for relocs against
8765 symbols which turn out to need copy relocs or are not
8771 || (htab
->root
.dynamic_sections_created
8772 && (h
->root
.type
== bfd_link_hash_undefweak
8773 || h
->root
.type
== bfd_link_hash_undefined
))))
8775 /* Make sure this symbol is output as a dynamic symbol.
8776 Undefined weak syms won't yet be marked as dynamic. */
8777 if (h
->dynindx
== -1
8779 && h
->root
.type
== bfd_link_hash_undefweak
8780 && !bfd_elf_link_record_dynamic_symbol (info
, h
))
8783 /* If that succeeded, we know we'll be keeping all the
8785 if (h
->dynindx
!= -1)
8789 eh
->dyn_relocs
= NULL
;
8794 /* Finally, allocate space. */
8795 for (p
= eh
->dyn_relocs
; p
!= NULL
; p
= p
->next
)
8799 sreloc
= elf_section_data (p
->sec
)->sreloc
;
8801 BFD_ASSERT (sreloc
!= NULL
);
8803 sreloc
->size
+= p
->count
* RELOC_SIZE (htab
);
8809 /* Allocate space in .plt, .got and associated reloc sections for
8810 ifunc dynamic relocs. */
8813 elfNN_aarch64_allocate_ifunc_dynrelocs (struct elf_link_hash_entry
*h
,
8816 struct bfd_link_info
*info
;
8817 struct elf_aarch64_link_hash_table
*htab
;
8818 struct elf_aarch64_link_hash_entry
*eh
;
8820 /* An example of a bfd_link_hash_indirect symbol is versioned
8821 symbol. For example: __gxx_personality_v0(bfd_link_hash_indirect)
8822 -> __gxx_personality_v0(bfd_link_hash_defined)
8824 There is no need to process bfd_link_hash_indirect symbols here
8825 because we will also be presented with the concrete instance of
8826 the symbol and elfNN_aarch64_copy_indirect_symbol () will have been
8827 called to copy all relevant data from the generic to the concrete
8829 if (h
->root
.type
== bfd_link_hash_indirect
)
8832 if (h
->root
.type
== bfd_link_hash_warning
)
8833 h
= (struct elf_link_hash_entry
*) h
->root
.u
.i
.link
;
8835 info
= (struct bfd_link_info
*) inf
;
8836 htab
= elf_aarch64_hash_table (info
);
8838 eh
= (struct elf_aarch64_link_hash_entry
*) h
;
8840 /* Since STT_GNU_IFUNC symbol must go through PLT, we handle it
8841 here if it is defined and referenced in a non-shared object. */
8842 if (h
->type
== STT_GNU_IFUNC
8844 return _bfd_elf_allocate_ifunc_dyn_relocs (info
, h
,
8847 htab
->plt_entry_size
,
8848 htab
->plt_header_size
,
8854 /* Allocate space in .plt, .got and associated reloc sections for
8855 local ifunc dynamic relocs. */
8858 elfNN_aarch64_allocate_local_ifunc_dynrelocs (void **slot
, void *inf
)
8860 struct elf_link_hash_entry
*h
8861 = (struct elf_link_hash_entry
*) *slot
;
8863 if (h
->type
!= STT_GNU_IFUNC
8867 || h
->root
.type
!= bfd_link_hash_defined
)
8870 return elfNN_aarch64_allocate_ifunc_dynrelocs (h
, inf
);
8873 /* Set DF_TEXTREL if we find any dynamic relocs that apply to
8874 read-only sections. */
8877 maybe_set_textrel (struct elf_link_hash_entry
*h
, void *info_p
)
8881 if (h
->root
.type
== bfd_link_hash_indirect
)
8884 sec
= readonly_dynrelocs (h
);
8887 struct bfd_link_info
*info
= (struct bfd_link_info
*) info_p
;
8889 info
->flags
|= DF_TEXTREL
;
8890 info
->callbacks
->minfo
8891 (_("%pB: dynamic relocation against `%pT' in read-only section `%pA'\n"),
8892 sec
->owner
, h
->root
.root
.string
, sec
);
8894 /* Not an error, just cut short the traversal. */
8900 /* This is the most important function of all . Innocuosly named
8904 elfNN_aarch64_size_dynamic_sections (bfd
*output_bfd ATTRIBUTE_UNUSED
,
8905 struct bfd_link_info
*info
)
8907 struct elf_aarch64_link_hash_table
*htab
;
8913 htab
= elf_aarch64_hash_table ((info
));
8914 dynobj
= htab
->root
.dynobj
;
8916 BFD_ASSERT (dynobj
!= NULL
);
8918 if (htab
->root
.dynamic_sections_created
)
8920 if (bfd_link_executable (info
) && !info
->nointerp
)
8922 s
= bfd_get_linker_section (dynobj
, ".interp");
8925 s
->size
= sizeof ELF_DYNAMIC_INTERPRETER
;
8926 s
->contents
= (unsigned char *) ELF_DYNAMIC_INTERPRETER
;
8930 /* Set up .got offsets for local syms, and space for local dynamic
8932 for (ibfd
= info
->input_bfds
; ibfd
!= NULL
; ibfd
= ibfd
->link
.next
)
8934 struct elf_aarch64_local_symbol
*locals
= NULL
;
8935 Elf_Internal_Shdr
*symtab_hdr
;
8939 if (!is_aarch64_elf (ibfd
))
8942 for (s
= ibfd
->sections
; s
!= NULL
; s
= s
->next
)
8944 struct elf_dyn_relocs
*p
;
8946 for (p
= (struct elf_dyn_relocs
*)
8947 (elf_section_data (s
)->local_dynrel
); p
!= NULL
; p
= p
->next
)
8949 if (!bfd_is_abs_section (p
->sec
)
8950 && bfd_is_abs_section (p
->sec
->output_section
))
8952 /* Input section has been discarded, either because
8953 it is a copy of a linkonce section or due to
8954 linker script /DISCARD/, so we'll be discarding
8957 else if (p
->count
!= 0)
8959 srel
= elf_section_data (p
->sec
)->sreloc
;
8960 srel
->size
+= p
->count
* RELOC_SIZE (htab
);
8961 if ((p
->sec
->output_section
->flags
& SEC_READONLY
) != 0)
8962 info
->flags
|= DF_TEXTREL
;
8967 locals
= elf_aarch64_locals (ibfd
);
8971 symtab_hdr
= &elf_symtab_hdr (ibfd
);
8972 srel
= htab
->root
.srelgot
;
8973 for (i
= 0; i
< symtab_hdr
->sh_info
; i
++)
8975 locals
[i
].got_offset
= (bfd_vma
) - 1;
8976 locals
[i
].tlsdesc_got_jump_table_offset
= (bfd_vma
) - 1;
8977 if (locals
[i
].got_refcount
> 0)
8979 unsigned got_type
= locals
[i
].got_type
;
8980 if (got_type
& GOT_TLSDESC_GD
)
8982 locals
[i
].tlsdesc_got_jump_table_offset
=
8983 (htab
->root
.sgotplt
->size
8984 - aarch64_compute_jump_table_size (htab
));
8985 htab
->root
.sgotplt
->size
+= GOT_ENTRY_SIZE
* 2;
8986 locals
[i
].got_offset
= (bfd_vma
) - 2;
8989 if (got_type
& GOT_TLS_GD
)
8991 locals
[i
].got_offset
= htab
->root
.sgot
->size
;
8992 htab
->root
.sgot
->size
+= GOT_ENTRY_SIZE
* 2;
8995 if (got_type
& GOT_TLS_IE
8996 || got_type
& GOT_NORMAL
)
8998 locals
[i
].got_offset
= htab
->root
.sgot
->size
;
8999 htab
->root
.sgot
->size
+= GOT_ENTRY_SIZE
;
9002 if (got_type
== GOT_UNKNOWN
)
9006 if (bfd_link_pic (info
))
9008 if (got_type
& GOT_TLSDESC_GD
)
9010 htab
->root
.srelplt
->size
+= RELOC_SIZE (htab
);
9011 /* Note RELOC_COUNT not incremented here! */
9012 htab
->tlsdesc_plt
= (bfd_vma
) - 1;
9015 if (got_type
& GOT_TLS_GD
)
9016 htab
->root
.srelgot
->size
+= RELOC_SIZE (htab
) * 2;
9018 if (got_type
& GOT_TLS_IE
9019 || got_type
& GOT_NORMAL
)
9020 htab
->root
.srelgot
->size
+= RELOC_SIZE (htab
);
9025 locals
[i
].got_refcount
= (bfd_vma
) - 1;
9031 /* Allocate global sym .plt and .got entries, and space for global
9032 sym dynamic relocs. */
9033 elf_link_hash_traverse (&htab
->root
, elfNN_aarch64_allocate_dynrelocs
,
9036 /* Allocate global ifunc sym .plt and .got entries, and space for global
9037 ifunc sym dynamic relocs. */
9038 elf_link_hash_traverse (&htab
->root
, elfNN_aarch64_allocate_ifunc_dynrelocs
,
9041 /* Allocate .plt and .got entries, and space for local ifunc symbols. */
9042 htab_traverse (htab
->loc_hash_table
,
9043 elfNN_aarch64_allocate_local_ifunc_dynrelocs
,
9046 /* For every jump slot reserved in the sgotplt, reloc_count is
9047 incremented. However, when we reserve space for TLS descriptors,
9048 it's not incremented, so in order to compute the space reserved
9049 for them, it suffices to multiply the reloc count by the jump
9052 if (htab
->root
.srelplt
)
9053 htab
->sgotplt_jump_table_size
= aarch64_compute_jump_table_size (htab
);
9055 if (htab
->tlsdesc_plt
)
9057 if (htab
->root
.splt
->size
== 0)
9058 htab
->root
.splt
->size
+= htab
->plt_header_size
;
9060 /* If we're not using lazy TLS relocations, don't generate the
9061 GOT and PLT entry required. */
9062 if (!(info
->flags
& DF_BIND_NOW
))
9064 htab
->tlsdesc_plt
= htab
->root
.splt
->size
;
9065 htab
->root
.splt
->size
+= htab
->tlsdesc_plt_entry_size
;
9067 htab
->dt_tlsdesc_got
= htab
->root
.sgot
->size
;
9068 htab
->root
.sgot
->size
+= GOT_ENTRY_SIZE
;
9072 /* Init mapping symbols information to use later to distingush between
9073 code and data while scanning for errata. */
9074 if (htab
->fix_erratum_835769
|| htab
->fix_erratum_843419
)
9075 for (ibfd
= info
->input_bfds
; ibfd
!= NULL
; ibfd
= ibfd
->link
.next
)
9077 if (!is_aarch64_elf (ibfd
))
9079 bfd_elfNN_aarch64_init_maps (ibfd
);
9082 /* We now have determined the sizes of the various dynamic sections.
9083 Allocate memory for them. */
9085 for (s
= dynobj
->sections
; s
!= NULL
; s
= s
->next
)
9087 if ((s
->flags
& SEC_LINKER_CREATED
) == 0)
9090 if (s
== htab
->root
.splt
9091 || s
== htab
->root
.sgot
9092 || s
== htab
->root
.sgotplt
9093 || s
== htab
->root
.iplt
9094 || s
== htab
->root
.igotplt
9095 || s
== htab
->root
.sdynbss
9096 || s
== htab
->root
.sdynrelro
)
9098 /* Strip this section if we don't need it; see the
9101 else if (CONST_STRNEQ (bfd_section_name (s
), ".rela"))
9103 if (s
->size
!= 0 && s
!= htab
->root
.srelplt
)
9106 /* We use the reloc_count field as a counter if we need
9107 to copy relocs into the output file. */
9108 if (s
!= htab
->root
.srelplt
)
9113 /* It's not one of our sections, so don't allocate space. */
9119 /* If we don't need this section, strip it from the
9120 output file. This is mostly to handle .rela.bss and
9121 .rela.plt. We must create both sections in
9122 create_dynamic_sections, because they must be created
9123 before the linker maps input sections to output
9124 sections. The linker does that before
9125 adjust_dynamic_symbol is called, and it is that
9126 function which decides whether anything needs to go
9127 into these sections. */
9128 s
->flags
|= SEC_EXCLUDE
;
9132 if ((s
->flags
& SEC_HAS_CONTENTS
) == 0)
9135 /* Allocate memory for the section contents. We use bfd_zalloc
9136 here in case unused entries are not reclaimed before the
9137 section's contents are written out. This should not happen,
9138 but this way if it does, we get a R_AARCH64_NONE reloc instead
9140 s
->contents
= (bfd_byte
*) bfd_zalloc (dynobj
, s
->size
);
9141 if (s
->contents
== NULL
)
9145 if (htab
->root
.dynamic_sections_created
)
9147 /* Add some entries to the .dynamic section. We fill in the
9148 values later, in elfNN_aarch64_finish_dynamic_sections, but we
9149 must add the entries now so that we get the correct size for
9150 the .dynamic section. The DT_DEBUG entry is filled in by the
9151 dynamic linker and used by the debugger. */
9152 #define add_dynamic_entry(TAG, VAL) \
9153 _bfd_elf_add_dynamic_entry (info, TAG, VAL)
9155 if (bfd_link_executable (info
))
9157 if (!add_dynamic_entry (DT_DEBUG
, 0))
9161 if (htab
->root
.splt
->size
!= 0)
9163 if (!add_dynamic_entry (DT_PLTGOT
, 0)
9164 || !add_dynamic_entry (DT_PLTRELSZ
, 0)
9165 || !add_dynamic_entry (DT_PLTREL
, DT_RELA
)
9166 || !add_dynamic_entry (DT_JMPREL
, 0))
9169 if (htab
->variant_pcs
9170 && !add_dynamic_entry (DT_AARCH64_VARIANT_PCS
, 0))
9173 if (htab
->tlsdesc_plt
9174 && !(info
->flags
& DF_BIND_NOW
)
9175 && (!add_dynamic_entry (DT_TLSDESC_PLT
, 0)
9176 || !add_dynamic_entry (DT_TLSDESC_GOT
, 0)))
9179 if ((elf_aarch64_tdata (output_bfd
)->plt_type
== PLT_BTI_PAC
)
9180 && (!add_dynamic_entry (DT_AARCH64_BTI_PLT
, 0)
9181 || !add_dynamic_entry (DT_AARCH64_PAC_PLT
, 0)))
9184 else if ((elf_aarch64_tdata (output_bfd
)->plt_type
== PLT_BTI
)
9185 && !add_dynamic_entry (DT_AARCH64_BTI_PLT
, 0))
9188 else if ((elf_aarch64_tdata (output_bfd
)->plt_type
== PLT_PAC
)
9189 && !add_dynamic_entry (DT_AARCH64_PAC_PLT
, 0))
9195 if (!add_dynamic_entry (DT_RELA
, 0)
9196 || !add_dynamic_entry (DT_RELASZ
, 0)
9197 || !add_dynamic_entry (DT_RELAENT
, RELOC_SIZE (htab
)))
9200 /* If any dynamic relocs apply to a read-only section,
9201 then we need a DT_TEXTREL entry. */
9202 if ((info
->flags
& DF_TEXTREL
) == 0)
9203 elf_link_hash_traverse (&htab
->root
, maybe_set_textrel
, info
);
9205 if ((info
->flags
& DF_TEXTREL
) != 0)
9207 if (!add_dynamic_entry (DT_TEXTREL
, 0))
9212 #undef add_dynamic_entry
9218 elf_aarch64_update_plt_entry (bfd
*output_bfd
,
9219 bfd_reloc_code_real_type r_type
,
9220 bfd_byte
*plt_entry
, bfd_vma value
)
9222 reloc_howto_type
*howto
= elfNN_aarch64_howto_from_bfd_reloc (r_type
);
9224 /* FIXME: We should check the return value from this function call. */
9225 (void) _bfd_aarch64_elf_put_addend (output_bfd
, plt_entry
, r_type
, howto
, value
);
9229 elfNN_aarch64_create_small_pltn_entry (struct elf_link_hash_entry
*h
,
9230 struct elf_aarch64_link_hash_table
9231 *htab
, bfd
*output_bfd
,
9232 struct bfd_link_info
*info
)
9234 bfd_byte
*plt_entry
;
9237 bfd_vma gotplt_entry_address
;
9238 bfd_vma plt_entry_address
;
9239 Elf_Internal_Rela rela
;
9241 asection
*plt
, *gotplt
, *relplt
;
9243 /* When building a static executable, use .iplt, .igot.plt and
9244 .rela.iplt sections for STT_GNU_IFUNC symbols. */
9245 if (htab
->root
.splt
!= NULL
)
9247 plt
= htab
->root
.splt
;
9248 gotplt
= htab
->root
.sgotplt
;
9249 relplt
= htab
->root
.srelplt
;
9253 plt
= htab
->root
.iplt
;
9254 gotplt
= htab
->root
.igotplt
;
9255 relplt
= htab
->root
.irelplt
;
9258 /* Get the index in the procedure linkage table which
9259 corresponds to this symbol. This is the index of this symbol
9260 in all the symbols for which we are making plt entries. The
9261 first entry in the procedure linkage table is reserved.
9263 Get the offset into the .got table of the entry that
9264 corresponds to this function. Each .got entry is GOT_ENTRY_SIZE
9265 bytes. The first three are reserved for the dynamic linker.
9267 For static executables, we don't reserve anything. */
9269 if (plt
== htab
->root
.splt
)
9271 plt_index
= (h
->plt
.offset
- htab
->plt_header_size
) / htab
->plt_entry_size
;
9272 got_offset
= (plt_index
+ 3) * GOT_ENTRY_SIZE
;
9276 plt_index
= h
->plt
.offset
/ htab
->plt_entry_size
;
9277 got_offset
= plt_index
* GOT_ENTRY_SIZE
;
9280 plt_entry
= plt
->contents
+ h
->plt
.offset
;
9281 plt_entry_address
= plt
->output_section
->vma
9282 + plt
->output_offset
+ h
->plt
.offset
;
9283 gotplt_entry_address
= gotplt
->output_section
->vma
+
9284 gotplt
->output_offset
+ got_offset
;
9286 /* Copy in the boiler-plate for the PLTn entry. */
9287 memcpy (plt_entry
, htab
->plt_entry
, htab
->plt_entry_size
);
9289 /* First instruction in BTI enabled PLT stub is a BTI
9290 instruction so skip it. */
9291 if (elf_aarch64_tdata (output_bfd
)->plt_type
& PLT_BTI
9292 && elf_elfheader (output_bfd
)->e_type
== ET_EXEC
)
9293 plt_entry
= plt_entry
+ 4;
9295 /* Fill in the top 21 bits for this: ADRP x16, PLT_GOT + n * 8.
9296 ADRP: ((PG(S+A)-PG(P)) >> 12) & 0x1fffff */
9297 elf_aarch64_update_plt_entry (output_bfd
, BFD_RELOC_AARCH64_ADR_HI21_PCREL
,
9299 PG (gotplt_entry_address
) -
9300 PG (plt_entry_address
));
9302 /* Fill in the lo12 bits for the load from the pltgot. */
9303 elf_aarch64_update_plt_entry (output_bfd
, BFD_RELOC_AARCH64_LDSTNN_LO12
,
9305 PG_OFFSET (gotplt_entry_address
));
9307 /* Fill in the lo12 bits for the add from the pltgot entry. */
9308 elf_aarch64_update_plt_entry (output_bfd
, BFD_RELOC_AARCH64_ADD_LO12
,
9310 PG_OFFSET (gotplt_entry_address
));
9312 /* All the GOTPLT Entries are essentially initialized to PLT0. */
9313 bfd_put_NN (output_bfd
,
9314 plt
->output_section
->vma
+ plt
->output_offset
,
9315 gotplt
->contents
+ got_offset
);
9317 rela
.r_offset
= gotplt_entry_address
;
9319 if (h
->dynindx
== -1
9320 || ((bfd_link_executable (info
)
9321 || ELF_ST_VISIBILITY (h
->other
) != STV_DEFAULT
)
9323 && h
->type
== STT_GNU_IFUNC
))
9325 /* If an STT_GNU_IFUNC symbol is locally defined, generate
9326 R_AARCH64_IRELATIVE instead of R_AARCH64_JUMP_SLOT. */
9327 rela
.r_info
= ELFNN_R_INFO (0, AARCH64_R (IRELATIVE
));
9328 rela
.r_addend
= (h
->root
.u
.def
.value
9329 + h
->root
.u
.def
.section
->output_section
->vma
9330 + h
->root
.u
.def
.section
->output_offset
);
9334 /* Fill in the entry in the .rela.plt section. */
9335 rela
.r_info
= ELFNN_R_INFO (h
->dynindx
, AARCH64_R (JUMP_SLOT
));
9339 /* Compute the relocation entry to used based on PLT index and do
9340 not adjust reloc_count. The reloc_count has already been adjusted
9341 to account for this entry. */
9342 loc
= relplt
->contents
+ plt_index
* RELOC_SIZE (htab
);
9343 bfd_elfNN_swap_reloca_out (output_bfd
, &rela
, loc
);
9346 /* Size sections even though they're not dynamic. We use it to setup
9347 _TLS_MODULE_BASE_, if needed. */
9350 elfNN_aarch64_always_size_sections (bfd
*output_bfd
,
9351 struct bfd_link_info
*info
)
9355 if (bfd_link_relocatable (info
))
9358 tls_sec
= elf_hash_table (info
)->tls_sec
;
9362 struct elf_link_hash_entry
*tlsbase
;
9364 tlsbase
= elf_link_hash_lookup (elf_hash_table (info
),
9365 "_TLS_MODULE_BASE_", TRUE
, TRUE
, FALSE
);
9369 struct bfd_link_hash_entry
*h
= NULL
;
9370 const struct elf_backend_data
*bed
=
9371 get_elf_backend_data (output_bfd
);
9373 if (!(_bfd_generic_link_add_one_symbol
9374 (info
, output_bfd
, "_TLS_MODULE_BASE_", BSF_LOCAL
,
9375 tls_sec
, 0, NULL
, FALSE
, bed
->collect
, &h
)))
9378 tlsbase
->type
= STT_TLS
;
9379 tlsbase
= (struct elf_link_hash_entry
*) h
;
9380 tlsbase
->def_regular
= 1;
9381 tlsbase
->other
= STV_HIDDEN
;
9382 (*bed
->elf_backend_hide_symbol
) (info
, tlsbase
, TRUE
);
9389 /* Finish up dynamic symbol handling. We set the contents of various
9390 dynamic sections here. */
9393 elfNN_aarch64_finish_dynamic_symbol (bfd
*output_bfd
,
9394 struct bfd_link_info
*info
,
9395 struct elf_link_hash_entry
*h
,
9396 Elf_Internal_Sym
*sym
)
9398 struct elf_aarch64_link_hash_table
*htab
;
9399 htab
= elf_aarch64_hash_table (info
);
9401 if (h
->plt
.offset
!= (bfd_vma
) - 1)
9403 asection
*plt
, *gotplt
, *relplt
;
9405 /* This symbol has an entry in the procedure linkage table. Set
9408 /* When building a static executable, use .iplt, .igot.plt and
9409 .rela.iplt sections for STT_GNU_IFUNC symbols. */
9410 if (htab
->root
.splt
!= NULL
)
9412 plt
= htab
->root
.splt
;
9413 gotplt
= htab
->root
.sgotplt
;
9414 relplt
= htab
->root
.srelplt
;
9418 plt
= htab
->root
.iplt
;
9419 gotplt
= htab
->root
.igotplt
;
9420 relplt
= htab
->root
.irelplt
;
9423 /* This symbol has an entry in the procedure linkage table. Set
9425 if ((h
->dynindx
== -1
9426 && !((h
->forced_local
|| bfd_link_executable (info
))
9428 && h
->type
== STT_GNU_IFUNC
))
9434 elfNN_aarch64_create_small_pltn_entry (h
, htab
, output_bfd
, info
);
9435 if (!h
->def_regular
)
9437 /* Mark the symbol as undefined, rather than as defined in
9438 the .plt section. */
9439 sym
->st_shndx
= SHN_UNDEF
;
9440 /* If the symbol is weak we need to clear the value.
9441 Otherwise, the PLT entry would provide a definition for
9442 the symbol even if the symbol wasn't defined anywhere,
9443 and so the symbol would never be NULL. Leave the value if
9444 there were any relocations where pointer equality matters
9445 (this is a clue for the dynamic linker, to make function
9446 pointer comparisons work between an application and shared
9448 if (!h
->ref_regular_nonweak
|| !h
->pointer_equality_needed
)
9453 if (h
->got
.offset
!= (bfd_vma
) - 1
9454 && elf_aarch64_hash_entry (h
)->got_type
== GOT_NORMAL
9455 /* Undefined weak symbol in static PIE resolves to 0 without
9456 any dynamic relocations. */
9457 && !UNDEFWEAK_NO_DYNAMIC_RELOC (info
, h
))
9459 Elf_Internal_Rela rela
;
9462 /* This symbol has an entry in the global offset table. Set it
9464 if (htab
->root
.sgot
== NULL
|| htab
->root
.srelgot
== NULL
)
9467 rela
.r_offset
= (htab
->root
.sgot
->output_section
->vma
9468 + htab
->root
.sgot
->output_offset
9469 + (h
->got
.offset
& ~(bfd_vma
) 1));
9472 && h
->type
== STT_GNU_IFUNC
)
9474 if (bfd_link_pic (info
))
9476 /* Generate R_AARCH64_GLOB_DAT. */
9483 if (!h
->pointer_equality_needed
)
9486 /* For non-shared object, we can't use .got.plt, which
9487 contains the real function address if we need pointer
9488 equality. We load the GOT entry with the PLT entry. */
9489 plt
= htab
->root
.splt
? htab
->root
.splt
: htab
->root
.iplt
;
9490 bfd_put_NN (output_bfd
, (plt
->output_section
->vma
9491 + plt
->output_offset
9493 htab
->root
.sgot
->contents
9494 + (h
->got
.offset
& ~(bfd_vma
) 1));
9498 else if (bfd_link_pic (info
) && SYMBOL_REFERENCES_LOCAL (info
, h
))
9500 if (!(h
->def_regular
|| ELF_COMMON_DEF_P (h
)))
9503 BFD_ASSERT ((h
->got
.offset
& 1) != 0);
9504 rela
.r_info
= ELFNN_R_INFO (0, AARCH64_R (RELATIVE
));
9505 rela
.r_addend
= (h
->root
.u
.def
.value
9506 + h
->root
.u
.def
.section
->output_section
->vma
9507 + h
->root
.u
.def
.section
->output_offset
);
9512 BFD_ASSERT ((h
->got
.offset
& 1) == 0);
9513 bfd_put_NN (output_bfd
, (bfd_vma
) 0,
9514 htab
->root
.sgot
->contents
+ h
->got
.offset
);
9515 rela
.r_info
= ELFNN_R_INFO (h
->dynindx
, AARCH64_R (GLOB_DAT
));
9519 loc
= htab
->root
.srelgot
->contents
;
9520 loc
+= htab
->root
.srelgot
->reloc_count
++ * RELOC_SIZE (htab
);
9521 bfd_elfNN_swap_reloca_out (output_bfd
, &rela
, loc
);
9526 Elf_Internal_Rela rela
;
9530 /* This symbol needs a copy reloc. Set it up. */
9531 if (h
->dynindx
== -1
9532 || (h
->root
.type
!= bfd_link_hash_defined
9533 && h
->root
.type
!= bfd_link_hash_defweak
)
9534 || htab
->root
.srelbss
== NULL
)
9537 rela
.r_offset
= (h
->root
.u
.def
.value
9538 + h
->root
.u
.def
.section
->output_section
->vma
9539 + h
->root
.u
.def
.section
->output_offset
);
9540 rela
.r_info
= ELFNN_R_INFO (h
->dynindx
, AARCH64_R (COPY
));
9542 if (h
->root
.u
.def
.section
== htab
->root
.sdynrelro
)
9543 s
= htab
->root
.sreldynrelro
;
9545 s
= htab
->root
.srelbss
;
9546 loc
= s
->contents
+ s
->reloc_count
++ * RELOC_SIZE (htab
);
9547 bfd_elfNN_swap_reloca_out (output_bfd
, &rela
, loc
);
9550 /* Mark _DYNAMIC and _GLOBAL_OFFSET_TABLE_ as absolute. SYM may
9551 be NULL for local symbols. */
9553 && (h
== elf_hash_table (info
)->hdynamic
9554 || h
== elf_hash_table (info
)->hgot
))
9555 sym
->st_shndx
= SHN_ABS
;
9560 /* Finish up local dynamic symbol handling. We set the contents of
9561 various dynamic sections here. */
9564 elfNN_aarch64_finish_local_dynamic_symbol (void **slot
, void *inf
)
9566 struct elf_link_hash_entry
*h
9567 = (struct elf_link_hash_entry
*) *slot
;
9568 struct bfd_link_info
*info
9569 = (struct bfd_link_info
*) inf
;
9571 return elfNN_aarch64_finish_dynamic_symbol (info
->output_bfd
,
9576 elfNN_aarch64_init_small_plt0_entry (bfd
*output_bfd ATTRIBUTE_UNUSED
,
9577 struct elf_aarch64_link_hash_table
9580 /* Fill in PLT0. Fixme:RR Note this doesn't distinguish between
9581 small and large plts and at the minute just generates
9584 /* PLT0 of the small PLT looks like this in ELF64 -
9585 stp x16, x30, [sp, #-16]! // Save the reloc and lr on stack.
9586 adrp x16, PLT_GOT + 16 // Get the page base of the GOTPLT
9587 ldr x17, [x16, #:lo12:PLT_GOT+16] // Load the address of the
9589 add x16, x16, #:lo12:PLT_GOT+16 // Load the lo12 bits of the
9590 // GOTPLT entry for this.
9592 PLT0 will be slightly different in ELF32 due to different got entry
9594 bfd_vma plt_got_2nd_ent
; /* Address of GOT[2]. */
9598 memcpy (htab
->root
.splt
->contents
, htab
->plt0_entry
,
9599 htab
->plt_header_size
);
9600 elf_section_data (htab
->root
.splt
->output_section
)->this_hdr
.sh_entsize
=
9601 htab
->plt_header_size
;
9603 plt_got_2nd_ent
= (htab
->root
.sgotplt
->output_section
->vma
9604 + htab
->root
.sgotplt
->output_offset
9605 + GOT_ENTRY_SIZE
* 2);
9607 plt_base
= htab
->root
.splt
->output_section
->vma
+
9608 htab
->root
.splt
->output_offset
;
9610 /* First instruction in BTI enabled PLT stub is a BTI
9611 instruction so skip it. */
9612 bfd_byte
*plt0_entry
= htab
->root
.splt
->contents
;
9613 if (elf_aarch64_tdata (output_bfd
)->plt_type
& PLT_BTI
)
9614 plt0_entry
= plt0_entry
+ 4;
9616 /* Fill in the top 21 bits for this: ADRP x16, PLT_GOT + n * 8.
9617 ADRP: ((PG(S+A)-PG(P)) >> 12) & 0x1fffff */
9618 elf_aarch64_update_plt_entry (output_bfd
, BFD_RELOC_AARCH64_ADR_HI21_PCREL
,
9620 PG (plt_got_2nd_ent
) - PG (plt_base
+ 4));
9622 elf_aarch64_update_plt_entry (output_bfd
, BFD_RELOC_AARCH64_LDSTNN_LO12
,
9624 PG_OFFSET (plt_got_2nd_ent
));
9626 elf_aarch64_update_plt_entry (output_bfd
, BFD_RELOC_AARCH64_ADD_LO12
,
9628 PG_OFFSET (plt_got_2nd_ent
));
9632 elfNN_aarch64_finish_dynamic_sections (bfd
*output_bfd
,
9633 struct bfd_link_info
*info
)
9635 struct elf_aarch64_link_hash_table
*htab
;
9639 htab
= elf_aarch64_hash_table (info
);
9640 dynobj
= htab
->root
.dynobj
;
9641 sdyn
= bfd_get_linker_section (dynobj
, ".dynamic");
9643 if (htab
->root
.dynamic_sections_created
)
9645 ElfNN_External_Dyn
*dyncon
, *dynconend
;
9647 if (sdyn
== NULL
|| htab
->root
.sgot
== NULL
)
9650 dyncon
= (ElfNN_External_Dyn
*) sdyn
->contents
;
9651 dynconend
= (ElfNN_External_Dyn
*) (sdyn
->contents
+ sdyn
->size
);
9652 for (; dyncon
< dynconend
; dyncon
++)
9654 Elf_Internal_Dyn dyn
;
9657 bfd_elfNN_swap_dyn_in (dynobj
, dyncon
, &dyn
);
9665 s
= htab
->root
.sgotplt
;
9666 dyn
.d_un
.d_ptr
= s
->output_section
->vma
+ s
->output_offset
;
9670 s
= htab
->root
.srelplt
;
9671 dyn
.d_un
.d_ptr
= s
->output_section
->vma
+ s
->output_offset
;
9675 s
= htab
->root
.srelplt
;
9676 dyn
.d_un
.d_val
= s
->size
;
9679 case DT_TLSDESC_PLT
:
9680 s
= htab
->root
.splt
;
9681 dyn
.d_un
.d_ptr
= s
->output_section
->vma
+ s
->output_offset
9682 + htab
->tlsdesc_plt
;
9685 case DT_TLSDESC_GOT
:
9686 s
= htab
->root
.sgot
;
9687 BFD_ASSERT (htab
->dt_tlsdesc_got
!= (bfd_vma
)-1);
9688 dyn
.d_un
.d_ptr
= s
->output_section
->vma
+ s
->output_offset
9689 + htab
->dt_tlsdesc_got
;
9693 bfd_elfNN_swap_dyn_out (output_bfd
, &dyn
, dyncon
);
9698 /* Fill in the special first entry in the procedure linkage table. */
9699 if (htab
->root
.splt
&& htab
->root
.splt
->size
> 0)
9701 elfNN_aarch64_init_small_plt0_entry (output_bfd
, htab
);
9703 elf_section_data (htab
->root
.splt
->output_section
)->
9704 this_hdr
.sh_entsize
= htab
->plt_entry_size
;
9707 if (htab
->tlsdesc_plt
&& !(info
->flags
& DF_BIND_NOW
))
9709 BFD_ASSERT (htab
->dt_tlsdesc_got
!= (bfd_vma
)-1);
9710 bfd_put_NN (output_bfd
, (bfd_vma
) 0,
9711 htab
->root
.sgot
->contents
+ htab
->dt_tlsdesc_got
);
9713 const bfd_byte
*entry
= elfNN_aarch64_tlsdesc_small_plt_entry
;
9714 htab
->tlsdesc_plt_entry_size
= PLT_TLSDESC_ENTRY_SIZE
;
9716 aarch64_plt_type type
= elf_aarch64_tdata (output_bfd
)->plt_type
;
9717 if (type
== PLT_BTI
|| type
== PLT_BTI_PAC
)
9719 entry
= elfNN_aarch64_tlsdesc_small_plt_bti_entry
;
9722 memcpy (htab
->root
.splt
->contents
+ htab
->tlsdesc_plt
,
9723 entry
, htab
->tlsdesc_plt_entry_size
);
9726 bfd_vma adrp1_addr
=
9727 htab
->root
.splt
->output_section
->vma
9728 + htab
->root
.splt
->output_offset
+ htab
->tlsdesc_plt
+ 4;
9730 bfd_vma adrp2_addr
= adrp1_addr
+ 4;
9733 htab
->root
.sgot
->output_section
->vma
9734 + htab
->root
.sgot
->output_offset
;
9736 bfd_vma pltgot_addr
=
9737 htab
->root
.sgotplt
->output_section
->vma
9738 + htab
->root
.sgotplt
->output_offset
;
9740 bfd_vma dt_tlsdesc_got
= got_addr
+ htab
->dt_tlsdesc_got
;
9742 bfd_byte
*plt_entry
=
9743 htab
->root
.splt
->contents
+ htab
->tlsdesc_plt
;
9745 /* First instruction in BTI enabled PLT stub is a BTI
9746 instruction so skip it. */
9749 plt_entry
= plt_entry
+ 4;
9750 adrp1_addr
= adrp1_addr
+ 4;
9751 adrp2_addr
= adrp2_addr
+ 4;
9754 /* adrp x2, DT_TLSDESC_GOT */
9755 elf_aarch64_update_plt_entry (output_bfd
,
9756 BFD_RELOC_AARCH64_ADR_HI21_PCREL
,
9758 (PG (dt_tlsdesc_got
)
9759 - PG (adrp1_addr
)));
9762 elf_aarch64_update_plt_entry (output_bfd
,
9763 BFD_RELOC_AARCH64_ADR_HI21_PCREL
,
9766 - PG (adrp2_addr
)));
9768 /* ldr x2, [x2, #0] */
9769 elf_aarch64_update_plt_entry (output_bfd
,
9770 BFD_RELOC_AARCH64_LDSTNN_LO12
,
9772 PG_OFFSET (dt_tlsdesc_got
));
9775 elf_aarch64_update_plt_entry (output_bfd
,
9776 BFD_RELOC_AARCH64_ADD_LO12
,
9778 PG_OFFSET (pltgot_addr
));
9783 if (htab
->root
.sgotplt
)
9785 if (bfd_is_abs_section (htab
->root
.sgotplt
->output_section
))
9788 (_("discarded output section: `%pA'"), htab
->root
.sgotplt
);
9792 /* Fill in the first three entries in the global offset table. */
9793 if (htab
->root
.sgotplt
->size
> 0)
9795 bfd_put_NN (output_bfd
, (bfd_vma
) 0, htab
->root
.sgotplt
->contents
);
9797 /* Write GOT[1] and GOT[2], needed for the dynamic linker. */
9798 bfd_put_NN (output_bfd
,
9800 htab
->root
.sgotplt
->contents
+ GOT_ENTRY_SIZE
);
9801 bfd_put_NN (output_bfd
,
9803 htab
->root
.sgotplt
->contents
+ GOT_ENTRY_SIZE
* 2);
9806 if (htab
->root
.sgot
)
9808 if (htab
->root
.sgot
->size
> 0)
9811 sdyn
? sdyn
->output_section
->vma
+ sdyn
->output_offset
: 0;
9812 bfd_put_NN (output_bfd
, addr
, htab
->root
.sgot
->contents
);
9816 elf_section_data (htab
->root
.sgotplt
->output_section
)->
9817 this_hdr
.sh_entsize
= GOT_ENTRY_SIZE
;
9820 if (htab
->root
.sgot
&& htab
->root
.sgot
->size
> 0)
9821 elf_section_data (htab
->root
.sgot
->output_section
)->this_hdr
.sh_entsize
9824 /* Fill PLT and GOT entries for local STT_GNU_IFUNC symbols. */
9825 htab_traverse (htab
->loc_hash_table
,
9826 elfNN_aarch64_finish_local_dynamic_symbol
,
9832 /* Check if BTI enabled PLTs are needed. Returns the type needed. */
9833 static aarch64_plt_type
9834 get_plt_type (bfd
*abfd
)
9836 aarch64_plt_type ret
= PLT_NORMAL
;
9837 bfd_byte
*contents
, *extdyn
, *extdynend
;
9838 asection
*sec
= bfd_get_section_by_name (abfd
, ".dynamic");
9839 if (!sec
|| !bfd_malloc_and_get_section (abfd
, sec
, &contents
))
9842 extdynend
= contents
+ sec
->size
;
9843 for (; extdyn
< extdynend
; extdyn
+= sizeof (ElfNN_External_Dyn
))
9845 Elf_Internal_Dyn dyn
;
9846 bfd_elfNN_swap_dyn_in (abfd
, extdyn
, &dyn
);
9848 /* Let's check the processor specific dynamic array tags. */
9849 bfd_vma tag
= dyn
.d_tag
;
9850 if (tag
< DT_LOPROC
|| tag
> DT_HIPROC
)
9855 case DT_AARCH64_BTI_PLT
:
9859 case DT_AARCH64_PAC_PLT
:
9871 elfNN_aarch64_get_synthetic_symtab (bfd
*abfd
,
9878 elf_aarch64_tdata (abfd
)->plt_type
= get_plt_type (abfd
);
9879 return _bfd_elf_get_synthetic_symtab (abfd
, symcount
, syms
,
9880 dynsymcount
, dynsyms
, ret
);
9883 /* Return address for Ith PLT stub in section PLT, for relocation REL
9884 or (bfd_vma) -1 if it should not be included. */
9887 elfNN_aarch64_plt_sym_val (bfd_vma i
, const asection
*plt
,
9888 const arelent
*rel ATTRIBUTE_UNUSED
)
9890 size_t plt0_size
= PLT_ENTRY_SIZE
;
9891 size_t pltn_size
= PLT_SMALL_ENTRY_SIZE
;
9893 if (elf_aarch64_tdata (plt
->owner
)->plt_type
== PLT_BTI_PAC
)
9895 if (elf_elfheader (plt
->owner
)->e_type
== ET_EXEC
)
9896 pltn_size
= PLT_BTI_PAC_SMALL_ENTRY_SIZE
;
9898 pltn_size
= PLT_PAC_SMALL_ENTRY_SIZE
;
9900 else if (elf_aarch64_tdata (plt
->owner
)->plt_type
== PLT_BTI
)
9902 if (elf_elfheader (plt
->owner
)->e_type
== ET_EXEC
)
9903 pltn_size
= PLT_BTI_SMALL_ENTRY_SIZE
;
9905 else if (elf_aarch64_tdata (plt
->owner
)->plt_type
== PLT_PAC
)
9907 pltn_size
= PLT_PAC_SMALL_ENTRY_SIZE
;
9910 return plt
->vma
+ plt0_size
+ i
* pltn_size
;
9913 /* Returns TRUE if NAME is an AArch64 mapping symbol.
9914 The ARM ELF standard defines $x (for A64 code) and $d (for data).
9915 It also allows a period initiated suffix to be added to the symbol, ie:
9916 "$[adtx]\.[:sym_char]+". */
9919 is_aarch64_mapping_symbol (const char * name
)
9921 return name
!= NULL
/* Paranoia. */
9922 && name
[0] == '$' /* Note: if objcopy --prefix-symbols has been used then
9923 the mapping symbols could have acquired a prefix.
9924 We do not support this here, since such symbols no
9925 longer conform to the ARM ELF ABI. */
9926 && (name
[1] == 'd' || name
[1] == 'x')
9927 && (name
[2] == 0 || name
[2] == '.');
9928 /* FIXME: Strictly speaking the symbol is only a valid mapping symbol if
9929 any characters that follow the period are legal characters for the body
9930 of a symbol's name. For now we just assume that this is the case. */
9933 /* Make sure that mapping symbols in object files are not removed via the
9934 "strip --strip-unneeded" tool. These symbols might needed in order to
9935 correctly generate linked files. Once an object file has been linked,
9936 it should be safe to remove them. */
9939 elfNN_aarch64_backend_symbol_processing (bfd
*abfd
, asymbol
*sym
)
9941 if (((abfd
->flags
& (EXEC_P
| DYNAMIC
)) == 0)
9942 && sym
->section
!= bfd_abs_section_ptr
9943 && is_aarch64_mapping_symbol (sym
->name
))
9944 sym
->flags
|= BSF_KEEP
;
9947 /* Implement elf_backend_setup_gnu_properties for AArch64. It serves as a
9948 wrapper function for _bfd_aarch64_elf_link_setup_gnu_properties to account
9949 for the effect of GNU properties of the output_bfd. */
9951 elfNN_aarch64_link_setup_gnu_properties (struct bfd_link_info
*info
)
9953 uint32_t prop
= elf_aarch64_tdata (info
->output_bfd
)->gnu_and_prop
;
9954 bfd
*pbfd
= _bfd_aarch64_elf_link_setup_gnu_properties (info
, &prop
);
9955 elf_aarch64_tdata (info
->output_bfd
)->gnu_and_prop
= prop
;
9956 elf_aarch64_tdata (info
->output_bfd
)->plt_type
9957 |= (prop
& GNU_PROPERTY_AARCH64_FEATURE_1_BTI
) ? PLT_BTI
: 0;
9958 setup_plt_values (info
, elf_aarch64_tdata (info
->output_bfd
)->plt_type
);
9962 /* Implement elf_backend_merge_gnu_properties for AArch64. It serves as a
9963 wrapper function for _bfd_aarch64_elf_merge_gnu_properties to account
9964 for the effect of GNU properties of the output_bfd. */
9966 elfNN_aarch64_merge_gnu_properties (struct bfd_link_info
*info
,
9967 bfd
*abfd
, bfd
*bbfd
,
9968 elf_property
*aprop
,
9969 elf_property
*bprop
)
9972 = elf_aarch64_tdata (info
->output_bfd
)->gnu_and_prop
;
9974 /* If output has been marked with BTI using command line argument, give out
9975 warning if necessary. */
9976 /* Properties are merged per type, hence only check for warnings when merging
9977 GNU_PROPERTY_AARCH64_FEATURE_1_AND. */
9978 if (((aprop
&& aprop
->pr_type
== GNU_PROPERTY_AARCH64_FEATURE_1_AND
)
9979 || (bprop
&& bprop
->pr_type
== GNU_PROPERTY_AARCH64_FEATURE_1_AND
))
9980 && (prop
& GNU_PROPERTY_AARCH64_FEATURE_1_BTI
)
9981 && (!elf_aarch64_tdata (info
->output_bfd
)->no_bti_warn
))
9983 if ((aprop
&& !(aprop
->u
.number
& GNU_PROPERTY_AARCH64_FEATURE_1_BTI
))
9986 _bfd_error_handler (_("%pB: warning: BTI turned on by -z force-bti when "
9987 "all inputs do not have BTI in NOTE section."),
9990 if ((bprop
&& !(bprop
->u
.number
& GNU_PROPERTY_AARCH64_FEATURE_1_BTI
))
9993 _bfd_error_handler (_("%pB: warning: BTI turned on by -z force-bti when "
9994 "all inputs do not have BTI in NOTE section."),
9999 return _bfd_aarch64_elf_merge_gnu_properties (info
, abfd
, aprop
,
10003 /* We use this so we can override certain functions
10004 (though currently we don't). */
10006 const struct elf_size_info elfNN_aarch64_size_info
=
10008 sizeof (ElfNN_External_Ehdr
),
10009 sizeof (ElfNN_External_Phdr
),
10010 sizeof (ElfNN_External_Shdr
),
10011 sizeof (ElfNN_External_Rel
),
10012 sizeof (ElfNN_External_Rela
),
10013 sizeof (ElfNN_External_Sym
),
10014 sizeof (ElfNN_External_Dyn
),
10015 sizeof (Elf_External_Note
),
10016 4, /* Hash table entry size. */
10017 1, /* Internal relocs per external relocs. */
10018 ARCH_SIZE
, /* Arch size. */
10019 LOG_FILE_ALIGN
, /* Log_file_align. */
10020 ELFCLASSNN
, EV_CURRENT
,
10021 bfd_elfNN_write_out_phdrs
,
10022 bfd_elfNN_write_shdrs_and_ehdr
,
10023 bfd_elfNN_checksum_contents
,
10024 bfd_elfNN_write_relocs
,
10025 bfd_elfNN_swap_symbol_in
,
10026 bfd_elfNN_swap_symbol_out
,
10027 bfd_elfNN_slurp_reloc_table
,
10028 bfd_elfNN_slurp_symbol_table
,
10029 bfd_elfNN_swap_dyn_in
,
10030 bfd_elfNN_swap_dyn_out
,
10031 bfd_elfNN_swap_reloc_in
,
10032 bfd_elfNN_swap_reloc_out
,
10033 bfd_elfNN_swap_reloca_in
,
10034 bfd_elfNN_swap_reloca_out
10037 #define ELF_ARCH bfd_arch_aarch64
10038 #define ELF_MACHINE_CODE EM_AARCH64
10039 #define ELF_MAXPAGESIZE 0x10000
10040 #define ELF_MINPAGESIZE 0x1000
10041 #define ELF_COMMONPAGESIZE 0x1000
10043 #define bfd_elfNN_close_and_cleanup \
10044 elfNN_aarch64_close_and_cleanup
10046 #define bfd_elfNN_bfd_free_cached_info \
10047 elfNN_aarch64_bfd_free_cached_info
10049 #define bfd_elfNN_bfd_is_target_special_symbol \
10050 elfNN_aarch64_is_target_special_symbol
10052 #define bfd_elfNN_bfd_link_hash_table_create \
10053 elfNN_aarch64_link_hash_table_create
10055 #define bfd_elfNN_bfd_merge_private_bfd_data \
10056 elfNN_aarch64_merge_private_bfd_data
10058 #define bfd_elfNN_bfd_print_private_bfd_data \
10059 elfNN_aarch64_print_private_bfd_data
10061 #define bfd_elfNN_bfd_reloc_type_lookup \
10062 elfNN_aarch64_reloc_type_lookup
10064 #define bfd_elfNN_bfd_reloc_name_lookup \
10065 elfNN_aarch64_reloc_name_lookup
10067 #define bfd_elfNN_bfd_set_private_flags \
10068 elfNN_aarch64_set_private_flags
10070 #define bfd_elfNN_find_inliner_info \
10071 elfNN_aarch64_find_inliner_info
10073 #define bfd_elfNN_get_synthetic_symtab \
10074 elfNN_aarch64_get_synthetic_symtab
10076 #define bfd_elfNN_mkobject \
10077 elfNN_aarch64_mkobject
10079 #define bfd_elfNN_new_section_hook \
10080 elfNN_aarch64_new_section_hook
10082 #define elf_backend_adjust_dynamic_symbol \
10083 elfNN_aarch64_adjust_dynamic_symbol
10085 #define elf_backend_always_size_sections \
10086 elfNN_aarch64_always_size_sections
10088 #define elf_backend_check_relocs \
10089 elfNN_aarch64_check_relocs
10091 #define elf_backend_copy_indirect_symbol \
10092 elfNN_aarch64_copy_indirect_symbol
10094 #define elf_backend_merge_symbol_attribute \
10095 elfNN_aarch64_merge_symbol_attribute
10097 /* Create .dynbss, and .rela.bss sections in DYNOBJ, and set up shortcuts
10098 to them in our hash. */
10099 #define elf_backend_create_dynamic_sections \
10100 elfNN_aarch64_create_dynamic_sections
10102 #define elf_backend_init_index_section \
10103 _bfd_elf_init_2_index_sections
10105 #define elf_backend_finish_dynamic_sections \
10106 elfNN_aarch64_finish_dynamic_sections
10108 #define elf_backend_finish_dynamic_symbol \
10109 elfNN_aarch64_finish_dynamic_symbol
10111 #define elf_backend_object_p \
10112 elfNN_aarch64_object_p
10114 #define elf_backend_output_arch_local_syms \
10115 elfNN_aarch64_output_arch_local_syms
10117 #define elf_backend_maybe_function_sym \
10118 elfNN_aarch64_maybe_function_sym
10120 #define elf_backend_plt_sym_val \
10121 elfNN_aarch64_plt_sym_val
10123 #define elf_backend_init_file_header \
10124 elfNN_aarch64_init_file_header
10126 #define elf_backend_relocate_section \
10127 elfNN_aarch64_relocate_section
10129 #define elf_backend_reloc_type_class \
10130 elfNN_aarch64_reloc_type_class
10132 #define elf_backend_section_from_shdr \
10133 elfNN_aarch64_section_from_shdr
10135 #define elf_backend_size_dynamic_sections \
10136 elfNN_aarch64_size_dynamic_sections
10138 #define elf_backend_size_info \
10139 elfNN_aarch64_size_info
10141 #define elf_backend_write_section \
10142 elfNN_aarch64_write_section
10144 #define elf_backend_symbol_processing \
10145 elfNN_aarch64_backend_symbol_processing
10147 #define elf_backend_setup_gnu_properties \
10148 elfNN_aarch64_link_setup_gnu_properties
10150 #define elf_backend_merge_gnu_properties \
10151 elfNN_aarch64_merge_gnu_properties
10153 #define elf_backend_can_refcount 1
10154 #define elf_backend_can_gc_sections 1
10155 #define elf_backend_plt_readonly 1
10156 #define elf_backend_want_got_plt 1
10157 #define elf_backend_want_plt_sym 0
10158 #define elf_backend_want_dynrelro 1
10159 #define elf_backend_may_use_rel_p 0
10160 #define elf_backend_may_use_rela_p 1
10161 #define elf_backend_default_use_rela_p 1
10162 #define elf_backend_rela_normal 1
10163 #define elf_backend_dtrel_excludes_plt 1
10164 #define elf_backend_got_header_size (GOT_ENTRY_SIZE * 3)
10165 #define elf_backend_default_execstack 0
10166 #define elf_backend_extern_protected_data 1
10167 #define elf_backend_hash_symbol elf_aarch64_hash_symbol
10169 #undef elf_backend_obj_attrs_section
10170 #define elf_backend_obj_attrs_section ".ARM.attributes"
10172 #include "elfNN-target.h"
10174 /* CloudABI support. */
10176 #undef TARGET_LITTLE_SYM
10177 #define TARGET_LITTLE_SYM aarch64_elfNN_le_cloudabi_vec
10178 #undef TARGET_LITTLE_NAME
10179 #define TARGET_LITTLE_NAME "elfNN-littleaarch64-cloudabi"
10180 #undef TARGET_BIG_SYM
10181 #define TARGET_BIG_SYM aarch64_elfNN_be_cloudabi_vec
10182 #undef TARGET_BIG_NAME
10183 #define TARGET_BIG_NAME "elfNN-bigaarch64-cloudabi"
10186 #define ELF_OSABI ELFOSABI_CLOUDABI
10189 #define elfNN_bed elfNN_aarch64_cloudabi_bed
10191 #include "elfNN-target.h"