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
&& (isec
->flags
& SEC_CODE
) != 0)
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_after_branch
)
3572 asection
**list
= htab
->input_list
;
3576 asection
*tail
= *list
;
3579 if (tail
== bfd_abs_section_ptr
)
3582 /* Reverse the list: we must avoid placing stubs at the
3583 beginning of the section because the beginning of the text
3584 section may be required for an interrupt vector in bare metal
3586 #define NEXT_SEC PREV_SEC
3588 while (tail
!= NULL
)
3590 /* Pop from tail. */
3591 asection
*item
= tail
;
3592 tail
= PREV_SEC (item
);
3595 NEXT_SEC (item
) = head
;
3599 while (head
!= NULL
)
3603 bfd_vma stub_group_start
= head
->output_offset
;
3604 bfd_vma end_of_next
;
3607 while (NEXT_SEC (curr
) != NULL
)
3609 next
= NEXT_SEC (curr
);
3610 end_of_next
= next
->output_offset
+ next
->size
;
3611 if (end_of_next
- stub_group_start
>= stub_group_size
)
3612 /* End of NEXT is too far from start, so stop. */
3614 /* Add NEXT to the group. */
3618 /* OK, the size from the start to the start of CURR is less
3619 than stub_group_size and thus can be handled by one stub
3620 section. (Or the head section is itself larger than
3621 stub_group_size, in which case we may be toast.)
3622 We should really be keeping track of the total size of
3623 stubs added here, as stubs contribute to the final output
3627 next
= NEXT_SEC (head
);
3628 /* Set up this stub group. */
3629 htab
->stub_group
[head
->id
].link_sec
= curr
;
3631 while (head
!= curr
&& (head
= next
) != NULL
);
3633 /* But wait, there's more! Input sections up to stub_group_size
3634 bytes after the stub section can be handled by it too. */
3635 if (!stubs_always_after_branch
)
3637 stub_group_start
= curr
->output_offset
+ curr
->size
;
3639 while (next
!= NULL
)
3641 end_of_next
= next
->output_offset
+ next
->size
;
3642 if (end_of_next
- stub_group_start
>= stub_group_size
)
3643 /* End of NEXT is too far from stubs, so stop. */
3645 /* Add NEXT to the stub group. */
3647 next
= NEXT_SEC (head
);
3648 htab
->stub_group
[head
->id
].link_sec
= curr
;
3654 while (list
++ != htab
->input_list
+ htab
->top_index
);
3656 free (htab
->input_list
);
3662 #define AARCH64_BITS(x, pos, n) (((x) >> (pos)) & ((1 << (n)) - 1))
3664 #define AARCH64_RT(insn) AARCH64_BITS (insn, 0, 5)
3665 #define AARCH64_RT2(insn) AARCH64_BITS (insn, 10, 5)
3666 #define AARCH64_RA(insn) AARCH64_BITS (insn, 10, 5)
3667 #define AARCH64_RD(insn) AARCH64_BITS (insn, 0, 5)
3668 #define AARCH64_RN(insn) AARCH64_BITS (insn, 5, 5)
3669 #define AARCH64_RM(insn) AARCH64_BITS (insn, 16, 5)
3671 #define AARCH64_MAC(insn) (((insn) & 0xff000000) == 0x9b000000)
3672 #define AARCH64_BIT(insn, n) AARCH64_BITS (insn, n, 1)
3673 #define AARCH64_OP31(insn) AARCH64_BITS (insn, 21, 3)
3674 #define AARCH64_ZR 0x1f
3676 /* All ld/st ops. See C4-182 of the ARM ARM. The encoding space for
3677 LD_PCREL, LDST_RO, LDST_UI and LDST_UIMM cover prefetch ops. */
3679 #define AARCH64_LD(insn) (AARCH64_BIT (insn, 22) == 1)
3680 #define AARCH64_LDST(insn) (((insn) & 0x0a000000) == 0x08000000)
3681 #define AARCH64_LDST_EX(insn) (((insn) & 0x3f000000) == 0x08000000)
3682 #define AARCH64_LDST_PCREL(insn) (((insn) & 0x3b000000) == 0x18000000)
3683 #define AARCH64_LDST_NAP(insn) (((insn) & 0x3b800000) == 0x28000000)
3684 #define AARCH64_LDSTP_PI(insn) (((insn) & 0x3b800000) == 0x28800000)
3685 #define AARCH64_LDSTP_O(insn) (((insn) & 0x3b800000) == 0x29000000)
3686 #define AARCH64_LDSTP_PRE(insn) (((insn) & 0x3b800000) == 0x29800000)
3687 #define AARCH64_LDST_UI(insn) (((insn) & 0x3b200c00) == 0x38000000)
3688 #define AARCH64_LDST_PIIMM(insn) (((insn) & 0x3b200c00) == 0x38000400)
3689 #define AARCH64_LDST_U(insn) (((insn) & 0x3b200c00) == 0x38000800)
3690 #define AARCH64_LDST_PREIMM(insn) (((insn) & 0x3b200c00) == 0x38000c00)
3691 #define AARCH64_LDST_RO(insn) (((insn) & 0x3b200c00) == 0x38200800)
3692 #define AARCH64_LDST_UIMM(insn) (((insn) & 0x3b000000) == 0x39000000)
3693 #define AARCH64_LDST_SIMD_M(insn) (((insn) & 0xbfbf0000) == 0x0c000000)
3694 #define AARCH64_LDST_SIMD_M_PI(insn) (((insn) & 0xbfa00000) == 0x0c800000)
3695 #define AARCH64_LDST_SIMD_S(insn) (((insn) & 0xbf9f0000) == 0x0d000000)
3696 #define AARCH64_LDST_SIMD_S_PI(insn) (((insn) & 0xbf800000) == 0x0d800000)
3698 /* Classify an INSN if it is indeed a load/store.
3700 Return TRUE if INSN is a LD/ST instruction otherwise return FALSE.
3702 For scalar LD/ST instructions PAIR is FALSE, RT is returned and RT2
3705 For LD/ST pair instructions PAIR is TRUE, RT and RT2 are returned. */
3708 aarch64_mem_op_p (uint32_t insn
, unsigned int *rt
, unsigned int *rt2
,
3709 bfd_boolean
*pair
, bfd_boolean
*load
)
3717 /* Bail out quickly if INSN doesn't fall into the load-store
3719 if (!AARCH64_LDST (insn
))
3724 if (AARCH64_LDST_EX (insn
))
3726 *rt
= AARCH64_RT (insn
);
3728 if (AARCH64_BIT (insn
, 21) == 1)
3731 *rt2
= AARCH64_RT2 (insn
);
3733 *load
= AARCH64_LD (insn
);
3736 else if (AARCH64_LDST_NAP (insn
)
3737 || AARCH64_LDSTP_PI (insn
)
3738 || AARCH64_LDSTP_O (insn
)
3739 || AARCH64_LDSTP_PRE (insn
))
3742 *rt
= AARCH64_RT (insn
);
3743 *rt2
= AARCH64_RT2 (insn
);
3744 *load
= AARCH64_LD (insn
);
3747 else if (AARCH64_LDST_PCREL (insn
)
3748 || AARCH64_LDST_UI (insn
)
3749 || AARCH64_LDST_PIIMM (insn
)
3750 || AARCH64_LDST_U (insn
)
3751 || AARCH64_LDST_PREIMM (insn
)
3752 || AARCH64_LDST_RO (insn
)
3753 || AARCH64_LDST_UIMM (insn
))
3755 *rt
= AARCH64_RT (insn
);
3757 if (AARCH64_LDST_PCREL (insn
))
3759 opc
= AARCH64_BITS (insn
, 22, 2);
3760 v
= AARCH64_BIT (insn
, 26);
3761 opc_v
= opc
| (v
<< 2);
3762 *load
= (opc_v
== 1 || opc_v
== 2 || opc_v
== 3
3763 || opc_v
== 5 || opc_v
== 7);
3766 else if (AARCH64_LDST_SIMD_M (insn
)
3767 || AARCH64_LDST_SIMD_M_PI (insn
))
3769 *rt
= AARCH64_RT (insn
);
3770 *load
= AARCH64_BIT (insn
, 22);
3771 opcode
= (insn
>> 12) & 0xf;
3798 else if (AARCH64_LDST_SIMD_S (insn
)
3799 || AARCH64_LDST_SIMD_S_PI (insn
))
3801 *rt
= AARCH64_RT (insn
);
3802 r
= (insn
>> 21) & 1;
3803 *load
= AARCH64_BIT (insn
, 22);
3804 opcode
= (insn
>> 13) & 0x7;
3816 *rt2
= *rt
+ (r
== 0 ? 2 : 3);
3824 *rt2
= *rt
+ (r
== 0 ? 2 : 3);
3836 /* Return TRUE if INSN is multiply-accumulate. */
3839 aarch64_mlxl_p (uint32_t insn
)
3841 uint32_t op31
= AARCH64_OP31 (insn
);
3843 if (AARCH64_MAC (insn
)
3844 && (op31
== 0 || op31
== 1 || op31
== 5)
3845 /* Exclude MUL instructions which are encoded as a multiple accumulate
3847 && AARCH64_RA (insn
) != AARCH64_ZR
)
3853 /* Some early revisions of the Cortex-A53 have an erratum (835769) whereby
3854 it is possible for a 64-bit multiply-accumulate instruction to generate an
3855 incorrect result. The details are quite complex and hard to
3856 determine statically, since branches in the code may exist in some
3857 circumstances, but all cases end with a memory (load, store, or
3858 prefetch) instruction followed immediately by the multiply-accumulate
3859 operation. We employ a linker patching technique, by moving the potentially
3860 affected multiply-accumulate instruction into a patch region and replacing
3861 the original instruction with a branch to the patch. This function checks
3862 if INSN_1 is the memory operation followed by a multiply-accumulate
3863 operation (INSN_2). Return TRUE if an erratum sequence is found, FALSE
3864 if INSN_1 and INSN_2 are safe. */
3867 aarch64_erratum_sequence (uint32_t insn_1
, uint32_t insn_2
)
3877 if (aarch64_mlxl_p (insn_2
)
3878 && aarch64_mem_op_p (insn_1
, &rt
, &rt2
, &pair
, &load
))
3880 /* Any SIMD memory op is independent of the subsequent MLA
3881 by definition of the erratum. */
3882 if (AARCH64_BIT (insn_1
, 26))
3885 /* If not SIMD, check for integer memory ops and MLA relationship. */
3886 rn
= AARCH64_RN (insn_2
);
3887 ra
= AARCH64_RA (insn_2
);
3888 rm
= AARCH64_RM (insn_2
);
3890 /* If this is a load and there's a true(RAW) dependency, we are safe
3891 and this is not an erratum sequence. */
3893 (rt
== rn
|| rt
== rm
|| rt
== ra
3894 || (pair
&& (rt2
== rn
|| rt2
== rm
|| rt2
== ra
))))
3897 /* We conservatively put out stubs for all other cases (including
3905 /* Used to order a list of mapping symbols by address. */
3908 elf_aarch64_compare_mapping (const void *a
, const void *b
)
3910 const elf_aarch64_section_map
*amap
= (const elf_aarch64_section_map
*) a
;
3911 const elf_aarch64_section_map
*bmap
= (const elf_aarch64_section_map
*) b
;
3913 if (amap
->vma
> bmap
->vma
)
3915 else if (amap
->vma
< bmap
->vma
)
3917 else if (amap
->type
> bmap
->type
)
3918 /* Ensure results do not depend on the host qsort for objects with
3919 multiple mapping symbols at the same address by sorting on type
3922 else if (amap
->type
< bmap
->type
)
3930 _bfd_aarch64_erratum_835769_stub_name (unsigned num_fixes
)
3932 char *stub_name
= (char *) bfd_malloc
3933 (strlen ("__erratum_835769_veneer_") + 16);
3934 if (stub_name
!= NULL
)
3935 sprintf (stub_name
,"__erratum_835769_veneer_%d", num_fixes
);
3939 /* Scan for Cortex-A53 erratum 835769 sequence.
3941 Return TRUE else FALSE on abnormal termination. */
3944 _bfd_aarch64_erratum_835769_scan (bfd
*input_bfd
,
3945 struct bfd_link_info
*info
,
3946 unsigned int *num_fixes_p
)
3949 struct elf_aarch64_link_hash_table
*htab
= elf_aarch64_hash_table (info
);
3950 unsigned int num_fixes
= *num_fixes_p
;
3955 for (section
= input_bfd
->sections
;
3957 section
= section
->next
)
3959 bfd_byte
*contents
= NULL
;
3960 struct _aarch64_elf_section_data
*sec_data
;
3963 if (elf_section_type (section
) != SHT_PROGBITS
3964 || (elf_section_flags (section
) & SHF_EXECINSTR
) == 0
3965 || (section
->flags
& SEC_EXCLUDE
) != 0
3966 || (section
->sec_info_type
== SEC_INFO_TYPE_JUST_SYMS
)
3967 || (section
->output_section
== bfd_abs_section_ptr
))
3970 if (elf_section_data (section
)->this_hdr
.contents
!= NULL
)
3971 contents
= elf_section_data (section
)->this_hdr
.contents
;
3972 else if (! bfd_malloc_and_get_section (input_bfd
, section
, &contents
))
3975 sec_data
= elf_aarch64_section_data (section
);
3977 qsort (sec_data
->map
, sec_data
->mapcount
,
3978 sizeof (elf_aarch64_section_map
), elf_aarch64_compare_mapping
);
3980 for (span
= 0; span
< sec_data
->mapcount
; span
++)
3982 unsigned int span_start
= sec_data
->map
[span
].vma
;
3983 unsigned int span_end
= ((span
== sec_data
->mapcount
- 1)
3984 ? sec_data
->map
[0].vma
+ section
->size
3985 : sec_data
->map
[span
+ 1].vma
);
3987 char span_type
= sec_data
->map
[span
].type
;
3989 if (span_type
== 'd')
3992 for (i
= span_start
; i
+ 4 < span_end
; i
+= 4)
3994 uint32_t insn_1
= bfd_getl32 (contents
+ i
);
3995 uint32_t insn_2
= bfd_getl32 (contents
+ i
+ 4);
3997 if (aarch64_erratum_sequence (insn_1
, insn_2
))
3999 struct elf_aarch64_stub_hash_entry
*stub_entry
;
4000 char *stub_name
= _bfd_aarch64_erratum_835769_stub_name (num_fixes
);
4004 stub_entry
= _bfd_aarch64_add_stub_entry_in_group (stub_name
,
4010 stub_entry
->stub_type
= aarch64_stub_erratum_835769_veneer
;
4011 stub_entry
->target_section
= section
;
4012 stub_entry
->target_value
= i
+ 4;
4013 stub_entry
->veneered_insn
= insn_2
;
4014 stub_entry
->output_name
= stub_name
;
4019 if (elf_section_data (section
)->this_hdr
.contents
== NULL
)
4023 *num_fixes_p
= num_fixes
;
4029 /* Test if instruction INSN is ADRP. */
4032 _bfd_aarch64_adrp_p (uint32_t insn
)
4034 return ((insn
& AARCH64_ADRP_OP_MASK
) == AARCH64_ADRP_OP
);
4038 /* Helper predicate to look for cortex-a53 erratum 843419 sequence 1. */
4041 _bfd_aarch64_erratum_843419_sequence_p (uint32_t insn_1
, uint32_t insn_2
,
4049 return (aarch64_mem_op_p (insn_2
, &rt
, &rt2
, &pair
, &load
)
4052 && AARCH64_LDST_UIMM (insn_3
)
4053 && AARCH64_RN (insn_3
) == AARCH64_RD (insn_1
));
4057 /* Test for the presence of Cortex-A53 erratum 843419 instruction sequence.
4059 Return TRUE if section CONTENTS at offset I contains one of the
4060 erratum 843419 sequences, otherwise return FALSE. If a sequence is
4061 seen set P_VENEER_I to the offset of the final LOAD/STORE
4062 instruction in the sequence.
4066 _bfd_aarch64_erratum_843419_p (bfd_byte
*contents
, bfd_vma vma
,
4067 bfd_vma i
, bfd_vma span_end
,
4068 bfd_vma
*p_veneer_i
)
4070 uint32_t insn_1
= bfd_getl32 (contents
+ i
);
4072 if (!_bfd_aarch64_adrp_p (insn_1
))
4075 if (span_end
< i
+ 12)
4078 uint32_t insn_2
= bfd_getl32 (contents
+ i
+ 4);
4079 uint32_t insn_3
= bfd_getl32 (contents
+ i
+ 8);
4081 if ((vma
& 0xfff) != 0xff8 && (vma
& 0xfff) != 0xffc)
4084 if (_bfd_aarch64_erratum_843419_sequence_p (insn_1
, insn_2
, insn_3
))
4086 *p_veneer_i
= i
+ 8;
4090 if (span_end
< i
+ 16)
4093 uint32_t insn_4
= bfd_getl32 (contents
+ i
+ 12);
4095 if (_bfd_aarch64_erratum_843419_sequence_p (insn_1
, insn_2
, insn_4
))
4097 *p_veneer_i
= i
+ 12;
4105 /* Resize all stub sections. */
4108 _bfd_aarch64_resize_stubs (struct elf_aarch64_link_hash_table
*htab
)
4112 /* OK, we've added some stubs. Find out the new size of the
4114 for (section
= htab
->stub_bfd
->sections
;
4115 section
!= NULL
; section
= section
->next
)
4117 /* Ignore non-stub sections. */
4118 if (!strstr (section
->name
, STUB_SUFFIX
))
4123 bfd_hash_traverse (&htab
->stub_hash_table
, aarch64_size_one_stub
, htab
);
4125 for (section
= htab
->stub_bfd
->sections
;
4126 section
!= NULL
; section
= section
->next
)
4128 if (!strstr (section
->name
, STUB_SUFFIX
))
4131 /* Add space for a branch. Add 8 bytes to keep section 8 byte aligned,
4132 as long branch stubs contain a 64-bit address. */
4136 /* Ensure all stub sections have a size which is a multiple of
4137 4096. This is important in order to ensure that the insertion
4138 of stub sections does not in itself move existing code around
4139 in such a way that new errata sequences are created. We only do this
4140 when the ADRP workaround is enabled. If only the ADR workaround is
4141 enabled then the stubs workaround won't ever be used. */
4142 if (htab
->fix_erratum_843419
& ERRAT_ADRP
)
4144 section
->size
= BFD_ALIGN (section
->size
, 0x1000);
4148 /* Construct an erratum 843419 workaround stub name. */
4151 _bfd_aarch64_erratum_843419_stub_name (asection
*input_section
,
4154 const bfd_size_type len
= 8 + 4 + 1 + 8 + 1 + 16 + 1;
4155 char *stub_name
= bfd_malloc (len
);
4157 if (stub_name
!= NULL
)
4158 snprintf (stub_name
, len
, "e843419@%04x_%08x_%" BFD_VMA_FMT
"x",
4159 input_section
->owner
->id
,
4165 /* Build a stub_entry structure describing an 843419 fixup.
4167 The stub_entry constructed is populated with the bit pattern INSN
4168 of the instruction located at OFFSET within input SECTION.
4170 Returns TRUE on success. */
4173 _bfd_aarch64_erratum_843419_fixup (uint32_t insn
,
4174 bfd_vma adrp_offset
,
4175 bfd_vma ldst_offset
,
4177 struct bfd_link_info
*info
)
4179 struct elf_aarch64_link_hash_table
*htab
= elf_aarch64_hash_table (info
);
4181 struct elf_aarch64_stub_hash_entry
*stub_entry
;
4183 stub_name
= _bfd_aarch64_erratum_843419_stub_name (section
, ldst_offset
);
4184 if (stub_name
== NULL
)
4186 stub_entry
= aarch64_stub_hash_lookup (&htab
->stub_hash_table
, stub_name
,
4194 /* We always place an 843419 workaround veneer in the stub section
4195 attached to the input section in which an erratum sequence has
4196 been found. This ensures that later in the link process (in
4197 elfNN_aarch64_write_section) when we copy the veneered
4198 instruction from the input section into the stub section the
4199 copied instruction will have had any relocations applied to it.
4200 If we placed workaround veneers in any other stub section then we
4201 could not assume that all relocations have been processed on the
4202 corresponding input section at the point we output the stub
4205 stub_entry
= _bfd_aarch64_add_stub_entry_after (stub_name
, section
, htab
);
4206 if (stub_entry
== NULL
)
4212 stub_entry
->adrp_offset
= adrp_offset
;
4213 stub_entry
->target_value
= ldst_offset
;
4214 stub_entry
->target_section
= section
;
4215 stub_entry
->stub_type
= aarch64_stub_erratum_843419_veneer
;
4216 stub_entry
->veneered_insn
= insn
;
4217 stub_entry
->output_name
= stub_name
;
4223 /* Scan an input section looking for the signature of erratum 843419.
4225 Scans input SECTION in INPUT_BFD looking for erratum 843419
4226 signatures, for each signature found a stub_entry is created
4227 describing the location of the erratum for subsequent fixup.
4229 Return TRUE on successful scan, FALSE on failure to scan.
4233 _bfd_aarch64_erratum_843419_scan (bfd
*input_bfd
, asection
*section
,
4234 struct bfd_link_info
*info
)
4236 struct elf_aarch64_link_hash_table
*htab
= elf_aarch64_hash_table (info
);
4241 if (elf_section_type (section
) != SHT_PROGBITS
4242 || (elf_section_flags (section
) & SHF_EXECINSTR
) == 0
4243 || (section
->flags
& SEC_EXCLUDE
) != 0
4244 || (section
->sec_info_type
== SEC_INFO_TYPE_JUST_SYMS
)
4245 || (section
->output_section
== bfd_abs_section_ptr
))
4250 bfd_byte
*contents
= NULL
;
4251 struct _aarch64_elf_section_data
*sec_data
;
4254 if (elf_section_data (section
)->this_hdr
.contents
!= NULL
)
4255 contents
= elf_section_data (section
)->this_hdr
.contents
;
4256 else if (! bfd_malloc_and_get_section (input_bfd
, section
, &contents
))
4259 sec_data
= elf_aarch64_section_data (section
);
4261 qsort (sec_data
->map
, sec_data
->mapcount
,
4262 sizeof (elf_aarch64_section_map
), elf_aarch64_compare_mapping
);
4264 for (span
= 0; span
< sec_data
->mapcount
; span
++)
4266 unsigned int span_start
= sec_data
->map
[span
].vma
;
4267 unsigned int span_end
= ((span
== sec_data
->mapcount
- 1)
4268 ? sec_data
->map
[0].vma
+ section
->size
4269 : sec_data
->map
[span
+ 1].vma
);
4271 char span_type
= sec_data
->map
[span
].type
;
4273 if (span_type
== 'd')
4276 for (i
= span_start
; i
+ 8 < span_end
; i
+= 4)
4278 bfd_vma vma
= (section
->output_section
->vma
4279 + section
->output_offset
4283 if (_bfd_aarch64_erratum_843419_p
4284 (contents
, vma
, i
, span_end
, &veneer_i
))
4286 uint32_t insn
= bfd_getl32 (contents
+ veneer_i
);
4288 if (!_bfd_aarch64_erratum_843419_fixup (insn
, i
, veneer_i
,
4295 if (elf_section_data (section
)->this_hdr
.contents
== NULL
)
4304 /* Determine and set the size of the stub section for a final link.
4306 The basic idea here is to examine all the relocations looking for
4307 PC-relative calls to a target that is unreachable with a "bl"
4311 elfNN_aarch64_size_stubs (bfd
*output_bfd
,
4313 struct bfd_link_info
*info
,
4314 bfd_signed_vma group_size
,
4315 asection
* (*add_stub_section
) (const char *,
4317 void (*layout_sections_again
) (void))
4319 bfd_size_type stub_group_size
;
4320 bfd_boolean stubs_always_before_branch
;
4321 bfd_boolean stub_changed
= FALSE
;
4322 struct elf_aarch64_link_hash_table
*htab
= elf_aarch64_hash_table (info
);
4323 unsigned int num_erratum_835769_fixes
= 0;
4325 /* Propagate mach to stub bfd, because it may not have been
4326 finalized when we created stub_bfd. */
4327 bfd_set_arch_mach (stub_bfd
, bfd_get_arch (output_bfd
),
4328 bfd_get_mach (output_bfd
));
4330 /* Stash our params away. */
4331 htab
->stub_bfd
= stub_bfd
;
4332 htab
->add_stub_section
= add_stub_section
;
4333 htab
->layout_sections_again
= layout_sections_again
;
4334 stubs_always_before_branch
= group_size
< 0;
4336 stub_group_size
= -group_size
;
4338 stub_group_size
= group_size
;
4340 if (stub_group_size
== 1)
4342 /* Default values. */
4343 /* AArch64 branch range is +-128MB. The value used is 1MB less. */
4344 stub_group_size
= 127 * 1024 * 1024;
4347 group_sections (htab
, stub_group_size
, stubs_always_before_branch
);
4349 (*htab
->layout_sections_again
) ();
4351 if (htab
->fix_erratum_835769
)
4355 for (input_bfd
= info
->input_bfds
;
4356 input_bfd
!= NULL
; input_bfd
= input_bfd
->link
.next
)
4358 if (!is_aarch64_elf (input_bfd
)
4359 || (input_bfd
->flags
& BFD_LINKER_CREATED
) != 0)
4362 if (!_bfd_aarch64_erratum_835769_scan (input_bfd
, info
,
4363 &num_erratum_835769_fixes
))
4367 _bfd_aarch64_resize_stubs (htab
);
4368 (*htab
->layout_sections_again
) ();
4371 if (htab
->fix_erratum_843419
!= ERRAT_NONE
)
4375 for (input_bfd
= info
->input_bfds
;
4377 input_bfd
= input_bfd
->link
.next
)
4381 if (!is_aarch64_elf (input_bfd
)
4382 || (input_bfd
->flags
& BFD_LINKER_CREATED
) != 0)
4385 for (section
= input_bfd
->sections
;
4387 section
= section
->next
)
4388 if (!_bfd_aarch64_erratum_843419_scan (input_bfd
, section
, info
))
4392 _bfd_aarch64_resize_stubs (htab
);
4393 (*htab
->layout_sections_again
) ();
4400 for (input_bfd
= info
->input_bfds
;
4401 input_bfd
!= NULL
; input_bfd
= input_bfd
->link
.next
)
4403 Elf_Internal_Shdr
*symtab_hdr
;
4405 Elf_Internal_Sym
*local_syms
= NULL
;
4407 if (!is_aarch64_elf (input_bfd
)
4408 || (input_bfd
->flags
& BFD_LINKER_CREATED
) != 0)
4411 /* We'll need the symbol table in a second. */
4412 symtab_hdr
= &elf_tdata (input_bfd
)->symtab_hdr
;
4413 if (symtab_hdr
->sh_info
== 0)
4416 /* Walk over each section attached to the input bfd. */
4417 for (section
= input_bfd
->sections
;
4418 section
!= NULL
; section
= section
->next
)
4420 Elf_Internal_Rela
*internal_relocs
, *irelaend
, *irela
;
4422 /* If there aren't any relocs, then there's nothing more
4424 if ((section
->flags
& SEC_RELOC
) == 0
4425 || section
->reloc_count
== 0
4426 || (section
->flags
& SEC_CODE
) == 0)
4429 /* If this section is a link-once section that will be
4430 discarded, then don't create any stubs. */
4431 if (section
->output_section
== NULL
4432 || section
->output_section
->owner
!= output_bfd
)
4435 /* Get the relocs. */
4437 = _bfd_elf_link_read_relocs (input_bfd
, section
, NULL
,
4438 NULL
, info
->keep_memory
);
4439 if (internal_relocs
== NULL
)
4440 goto error_ret_free_local
;
4442 /* Now examine each relocation. */
4443 irela
= internal_relocs
;
4444 irelaend
= irela
+ section
->reloc_count
;
4445 for (; irela
< irelaend
; irela
++)
4447 unsigned int r_type
, r_indx
;
4448 enum elf_aarch64_stub_type stub_type
;
4449 struct elf_aarch64_stub_hash_entry
*stub_entry
;
4452 bfd_vma destination
;
4453 struct elf_aarch64_link_hash_entry
*hash
;
4454 const char *sym_name
;
4456 const asection
*id_sec
;
4457 unsigned char st_type
;
4460 r_type
= ELFNN_R_TYPE (irela
->r_info
);
4461 r_indx
= ELFNN_R_SYM (irela
->r_info
);
4463 if (r_type
>= (unsigned int) R_AARCH64_end
)
4465 bfd_set_error (bfd_error_bad_value
);
4466 error_ret_free_internal
:
4467 if (elf_section_data (section
)->relocs
== NULL
)
4468 free (internal_relocs
);
4469 goto error_ret_free_local
;
4472 /* Only look for stubs on unconditional branch and
4473 branch and link instructions. */
4474 if (r_type
!= (unsigned int) AARCH64_R (CALL26
)
4475 && r_type
!= (unsigned int) AARCH64_R (JUMP26
))
4478 /* Now determine the call target, its name, value,
4485 if (r_indx
< symtab_hdr
->sh_info
)
4487 /* It's a local symbol. */
4488 Elf_Internal_Sym
*sym
;
4489 Elf_Internal_Shdr
*hdr
;
4491 if (local_syms
== NULL
)
4494 = (Elf_Internal_Sym
*) symtab_hdr
->contents
;
4495 if (local_syms
== NULL
)
4497 = bfd_elf_get_elf_syms (input_bfd
, symtab_hdr
,
4498 symtab_hdr
->sh_info
, 0,
4500 if (local_syms
== NULL
)
4501 goto error_ret_free_internal
;
4504 sym
= local_syms
+ r_indx
;
4505 hdr
= elf_elfsections (input_bfd
)[sym
->st_shndx
];
4506 sym_sec
= hdr
->bfd_section
;
4508 /* This is an undefined symbol. It can never
4512 if (ELF_ST_TYPE (sym
->st_info
) != STT_SECTION
)
4513 sym_value
= sym
->st_value
;
4514 destination
= (sym_value
+ irela
->r_addend
4515 + sym_sec
->output_offset
4516 + sym_sec
->output_section
->vma
);
4517 st_type
= ELF_ST_TYPE (sym
->st_info
);
4519 = bfd_elf_string_from_elf_section (input_bfd
,
4520 symtab_hdr
->sh_link
,
4527 e_indx
= r_indx
- symtab_hdr
->sh_info
;
4528 hash
= ((struct elf_aarch64_link_hash_entry
*)
4529 elf_sym_hashes (input_bfd
)[e_indx
]);
4531 while (hash
->root
.root
.type
== bfd_link_hash_indirect
4532 || hash
->root
.root
.type
== bfd_link_hash_warning
)
4533 hash
= ((struct elf_aarch64_link_hash_entry
*)
4534 hash
->root
.root
.u
.i
.link
);
4536 if (hash
->root
.root
.type
== bfd_link_hash_defined
4537 || hash
->root
.root
.type
== bfd_link_hash_defweak
)
4539 struct elf_aarch64_link_hash_table
*globals
=
4540 elf_aarch64_hash_table (info
);
4541 sym_sec
= hash
->root
.root
.u
.def
.section
;
4542 sym_value
= hash
->root
.root
.u
.def
.value
;
4543 /* For a destination in a shared library,
4544 use the PLT stub as target address to
4545 decide whether a branch stub is
4547 if (globals
->root
.splt
!= NULL
&& hash
!= NULL
4548 && hash
->root
.plt
.offset
!= (bfd_vma
) - 1)
4550 sym_sec
= globals
->root
.splt
;
4551 sym_value
= hash
->root
.plt
.offset
;
4552 if (sym_sec
->output_section
!= NULL
)
4553 destination
= (sym_value
4554 + sym_sec
->output_offset
4556 sym_sec
->output_section
->vma
);
4558 else if (sym_sec
->output_section
!= NULL
)
4559 destination
= (sym_value
+ irela
->r_addend
4560 + sym_sec
->output_offset
4561 + sym_sec
->output_section
->vma
);
4563 else if (hash
->root
.root
.type
== bfd_link_hash_undefined
4564 || (hash
->root
.root
.type
4565 == bfd_link_hash_undefweak
))
4567 /* For a shared library, use the PLT stub as
4568 target address to decide whether a long
4569 branch stub is needed.
4570 For absolute code, they cannot be handled. */
4571 struct elf_aarch64_link_hash_table
*globals
=
4572 elf_aarch64_hash_table (info
);
4574 if (globals
->root
.splt
!= NULL
&& hash
!= NULL
4575 && hash
->root
.plt
.offset
!= (bfd_vma
) - 1)
4577 sym_sec
= globals
->root
.splt
;
4578 sym_value
= hash
->root
.plt
.offset
;
4579 if (sym_sec
->output_section
!= NULL
)
4580 destination
= (sym_value
4581 + sym_sec
->output_offset
4583 sym_sec
->output_section
->vma
);
4590 bfd_set_error (bfd_error_bad_value
);
4591 goto error_ret_free_internal
;
4593 st_type
= ELF_ST_TYPE (hash
->root
.type
);
4594 sym_name
= hash
->root
.root
.root
.string
;
4597 /* Determine what (if any) linker stub is needed. */
4598 stub_type
= aarch64_type_of_stub (section
, irela
, sym_sec
,
4599 st_type
, destination
);
4600 if (stub_type
== aarch64_stub_none
)
4603 /* Support for grouping stub sections. */
4604 id_sec
= htab
->stub_group
[section
->id
].link_sec
;
4606 /* Get the name of this stub. */
4607 stub_name
= elfNN_aarch64_stub_name (id_sec
, sym_sec
, hash
,
4610 goto error_ret_free_internal
;
4613 aarch64_stub_hash_lookup (&htab
->stub_hash_table
,
4614 stub_name
, FALSE
, FALSE
);
4615 if (stub_entry
!= NULL
)
4617 /* The proper stub has already been created. */
4619 /* Always update this stub's target since it may have
4620 changed after layout. */
4621 stub_entry
->target_value
= sym_value
+ irela
->r_addend
;
4625 stub_entry
= _bfd_aarch64_add_stub_entry_in_group
4626 (stub_name
, section
, htab
);
4627 if (stub_entry
== NULL
)
4630 goto error_ret_free_internal
;
4633 stub_entry
->target_value
= sym_value
+ irela
->r_addend
;
4634 stub_entry
->target_section
= sym_sec
;
4635 stub_entry
->stub_type
= stub_type
;
4636 stub_entry
->h
= hash
;
4637 stub_entry
->st_type
= st_type
;
4639 if (sym_name
== NULL
)
4640 sym_name
= "unnamed";
4641 len
= sizeof (STUB_ENTRY_NAME
) + strlen (sym_name
);
4642 stub_entry
->output_name
= bfd_alloc (htab
->stub_bfd
, len
);
4643 if (stub_entry
->output_name
== NULL
)
4646 goto error_ret_free_internal
;
4649 snprintf (stub_entry
->output_name
, len
, STUB_ENTRY_NAME
,
4652 stub_changed
= TRUE
;
4655 /* We're done with the internal relocs, free them. */
4656 if (elf_section_data (section
)->relocs
== NULL
)
4657 free (internal_relocs
);
4664 _bfd_aarch64_resize_stubs (htab
);
4666 /* Ask the linker to do its stuff. */
4667 (*htab
->layout_sections_again
) ();
4668 stub_changed
= FALSE
;
4673 error_ret_free_local
:
4677 /* Build all the stubs associated with the current output file. The
4678 stubs are kept in a hash table attached to the main linker hash
4679 table. We also set up the .plt entries for statically linked PIC
4680 functions here. This function is called via aarch64_elf_finish in the
4684 elfNN_aarch64_build_stubs (struct bfd_link_info
*info
)
4687 struct bfd_hash_table
*table
;
4688 struct elf_aarch64_link_hash_table
*htab
;
4690 htab
= elf_aarch64_hash_table (info
);
4692 for (stub_sec
= htab
->stub_bfd
->sections
;
4693 stub_sec
!= NULL
; stub_sec
= stub_sec
->next
)
4697 /* Ignore non-stub sections. */
4698 if (!strstr (stub_sec
->name
, STUB_SUFFIX
))
4701 /* Allocate memory to hold the linker stubs. */
4702 size
= stub_sec
->size
;
4703 stub_sec
->contents
= bfd_zalloc (htab
->stub_bfd
, size
);
4704 if (stub_sec
->contents
== NULL
&& size
!= 0)
4708 /* Add a branch around the stub section, and a nop, to keep it 8 byte
4709 aligned, as long branch stubs contain a 64-bit address. */
4710 bfd_putl32 (0x14000000 | (size
>> 2), stub_sec
->contents
);
4711 bfd_putl32 (INSN_NOP
, stub_sec
->contents
+ 4);
4712 stub_sec
->size
+= 8;
4715 /* Build the stubs as directed by the stub hash table. */
4716 table
= &htab
->stub_hash_table
;
4717 bfd_hash_traverse (table
, aarch64_build_one_stub
, info
);
4723 /* Add an entry to the code/data map for section SEC. */
4726 elfNN_aarch64_section_map_add (asection
*sec
, char type
, bfd_vma vma
)
4728 struct _aarch64_elf_section_data
*sec_data
=
4729 elf_aarch64_section_data (sec
);
4730 unsigned int newidx
;
4732 if (sec_data
->map
== NULL
)
4734 sec_data
->map
= bfd_malloc (sizeof (elf_aarch64_section_map
));
4735 sec_data
->mapcount
= 0;
4736 sec_data
->mapsize
= 1;
4739 newidx
= sec_data
->mapcount
++;
4741 if (sec_data
->mapcount
> sec_data
->mapsize
)
4743 sec_data
->mapsize
*= 2;
4744 sec_data
->map
= bfd_realloc_or_free
4745 (sec_data
->map
, sec_data
->mapsize
* sizeof (elf_aarch64_section_map
));
4750 sec_data
->map
[newidx
].vma
= vma
;
4751 sec_data
->map
[newidx
].type
= type
;
4756 /* Initialise maps of insn/data for input BFDs. */
4758 bfd_elfNN_aarch64_init_maps (bfd
*abfd
)
4760 Elf_Internal_Sym
*isymbuf
;
4761 Elf_Internal_Shdr
*hdr
;
4762 unsigned int i
, localsyms
;
4764 /* Make sure that we are dealing with an AArch64 elf binary. */
4765 if (!is_aarch64_elf (abfd
))
4768 if ((abfd
->flags
& DYNAMIC
) != 0)
4771 hdr
= &elf_symtab_hdr (abfd
);
4772 localsyms
= hdr
->sh_info
;
4774 /* Obtain a buffer full of symbols for this BFD. The hdr->sh_info field
4775 should contain the number of local symbols, which should come before any
4776 global symbols. Mapping symbols are always local. */
4777 isymbuf
= bfd_elf_get_elf_syms (abfd
, hdr
, localsyms
, 0, NULL
, NULL
, NULL
);
4779 /* No internal symbols read? Skip this BFD. */
4780 if (isymbuf
== NULL
)
4783 for (i
= 0; i
< localsyms
; i
++)
4785 Elf_Internal_Sym
*isym
= &isymbuf
[i
];
4786 asection
*sec
= bfd_section_from_elf_index (abfd
, isym
->st_shndx
);
4789 if (sec
!= NULL
&& ELF_ST_BIND (isym
->st_info
) == STB_LOCAL
)
4791 name
= bfd_elf_string_from_elf_section (abfd
,
4795 if (bfd_is_aarch64_special_symbol_name
4796 (name
, BFD_AARCH64_SPECIAL_SYM_TYPE_MAP
))
4797 elfNN_aarch64_section_map_add (sec
, name
[1], isym
->st_value
);
4803 setup_plt_values (struct bfd_link_info
*link_info
,
4804 aarch64_plt_type plt_type
)
4806 struct elf_aarch64_link_hash_table
*globals
;
4807 globals
= elf_aarch64_hash_table (link_info
);
4809 if (plt_type
== PLT_BTI_PAC
)
4811 globals
->plt0_entry
= elfNN_aarch64_small_plt0_bti_entry
;
4813 /* Only in ET_EXEC we need PLTn with BTI. */
4814 if (bfd_link_pde (link_info
))
4816 globals
->plt_entry_size
= PLT_BTI_PAC_SMALL_ENTRY_SIZE
;
4817 globals
->plt_entry
= elfNN_aarch64_small_plt_bti_pac_entry
;
4821 globals
->plt_entry_size
= PLT_PAC_SMALL_ENTRY_SIZE
;
4822 globals
->plt_entry
= elfNN_aarch64_small_plt_pac_entry
;
4825 else if (plt_type
== PLT_BTI
)
4827 globals
->plt0_entry
= elfNN_aarch64_small_plt0_bti_entry
;
4829 /* Only in ET_EXEC we need PLTn with BTI. */
4830 if (bfd_link_pde (link_info
))
4832 globals
->plt_entry_size
= PLT_BTI_SMALL_ENTRY_SIZE
;
4833 globals
->plt_entry
= elfNN_aarch64_small_plt_bti_entry
;
4836 else if (plt_type
== PLT_PAC
)
4838 globals
->plt_entry_size
= PLT_PAC_SMALL_ENTRY_SIZE
;
4839 globals
->plt_entry
= elfNN_aarch64_small_plt_pac_entry
;
4843 /* Set option values needed during linking. */
4845 bfd_elfNN_aarch64_set_options (struct bfd
*output_bfd
,
4846 struct bfd_link_info
*link_info
,
4848 int no_wchar_warn
, int pic_veneer
,
4849 int fix_erratum_835769
,
4850 erratum_84319_opts fix_erratum_843419
,
4851 int no_apply_dynamic_relocs
,
4852 aarch64_bti_pac_info bp_info
)
4854 struct elf_aarch64_link_hash_table
*globals
;
4856 globals
= elf_aarch64_hash_table (link_info
);
4857 globals
->pic_veneer
= pic_veneer
;
4858 globals
->fix_erratum_835769
= fix_erratum_835769
;
4859 /* If the default options are used, then ERRAT_ADR will be set by default
4860 which will enable the ADRP->ADR workaround for the erratum 843419
4862 globals
->fix_erratum_843419
= fix_erratum_843419
;
4863 globals
->no_apply_dynamic_relocs
= no_apply_dynamic_relocs
;
4865 BFD_ASSERT (is_aarch64_elf (output_bfd
));
4866 elf_aarch64_tdata (output_bfd
)->no_enum_size_warning
= no_enum_warn
;
4867 elf_aarch64_tdata (output_bfd
)->no_wchar_size_warning
= no_wchar_warn
;
4869 switch (bp_info
.bti_type
)
4872 elf_aarch64_tdata (output_bfd
)->no_bti_warn
= 0;
4873 elf_aarch64_tdata (output_bfd
)->gnu_and_prop
4874 |= GNU_PROPERTY_AARCH64_FEATURE_1_BTI
;
4880 elf_aarch64_tdata (output_bfd
)->plt_type
= bp_info
.plt_type
;
4881 setup_plt_values (link_info
, bp_info
.plt_type
);
4885 aarch64_calculate_got_entry_vma (struct elf_link_hash_entry
*h
,
4886 struct elf_aarch64_link_hash_table
4887 *globals
, struct bfd_link_info
*info
,
4888 bfd_vma value
, bfd
*output_bfd
,
4889 bfd_boolean
*unresolved_reloc_p
)
4891 bfd_vma off
= (bfd_vma
) - 1;
4892 asection
*basegot
= globals
->root
.sgot
;
4893 bfd_boolean dyn
= globals
->root
.dynamic_sections_created
;
4897 BFD_ASSERT (basegot
!= NULL
);
4898 off
= h
->got
.offset
;
4899 BFD_ASSERT (off
!= (bfd_vma
) - 1);
4900 if (!WILL_CALL_FINISH_DYNAMIC_SYMBOL (dyn
, bfd_link_pic (info
), h
)
4901 || (bfd_link_pic (info
)
4902 && SYMBOL_REFERENCES_LOCAL (info
, h
))
4903 || (ELF_ST_VISIBILITY (h
->other
)
4904 && h
->root
.type
== bfd_link_hash_undefweak
))
4906 /* This is actually a static link, or it is a -Bsymbolic link
4907 and the symbol is defined locally. We must initialize this
4908 entry in the global offset table. Since the offset must
4909 always be a multiple of 8 (4 in the case of ILP32), we use
4910 the least significant bit to record whether we have
4911 initialized it already.
4912 When doing a dynamic link, we create a .rel(a).got relocation
4913 entry to initialize the value. This is done in the
4914 finish_dynamic_symbol routine. */
4919 bfd_put_NN (output_bfd
, value
, basegot
->contents
+ off
);
4924 *unresolved_reloc_p
= FALSE
;
4926 off
= off
+ basegot
->output_section
->vma
+ basegot
->output_offset
;
4932 /* Change R_TYPE to a more efficient access model where possible,
4933 return the new reloc type. */
4935 static bfd_reloc_code_real_type
4936 aarch64_tls_transition_without_check (bfd_reloc_code_real_type r_type
,
4937 struct elf_link_hash_entry
*h
)
4939 bfd_boolean is_local
= h
== NULL
;
4943 case BFD_RELOC_AARCH64_TLSDESC_ADR_PAGE21
:
4944 case BFD_RELOC_AARCH64_TLSGD_ADR_PAGE21
:
4946 ? BFD_RELOC_AARCH64_TLSLE_MOVW_TPREL_G1
4947 : BFD_RELOC_AARCH64_TLSIE_ADR_GOTTPREL_PAGE21
);
4949 case BFD_RELOC_AARCH64_TLSDESC_ADR_PREL21
:
4951 ? BFD_RELOC_AARCH64_TLSLE_MOVW_TPREL_G0_NC
4954 case BFD_RELOC_AARCH64_TLSDESC_LD_PREL19
:
4956 ? BFD_RELOC_AARCH64_TLSLE_MOVW_TPREL_G1
4957 : BFD_RELOC_AARCH64_TLSIE_LD_GOTTPREL_PREL19
);
4959 case BFD_RELOC_AARCH64_TLSDESC_LDR
:
4961 ? BFD_RELOC_AARCH64_TLSLE_MOVW_TPREL_G0_NC
4962 : BFD_RELOC_AARCH64_NONE
);
4964 case BFD_RELOC_AARCH64_TLSDESC_OFF_G0_NC
:
4966 ? BFD_RELOC_AARCH64_TLSLE_MOVW_TPREL_G1_NC
4967 : BFD_RELOC_AARCH64_TLSIE_MOVW_GOTTPREL_G0_NC
);
4969 case BFD_RELOC_AARCH64_TLSDESC_OFF_G1
:
4971 ? BFD_RELOC_AARCH64_TLSLE_MOVW_TPREL_G2
4972 : BFD_RELOC_AARCH64_TLSIE_MOVW_GOTTPREL_G1
);
4974 case BFD_RELOC_AARCH64_TLSDESC_LDNN_LO12_NC
:
4975 case BFD_RELOC_AARCH64_TLSGD_ADD_LO12_NC
:
4977 ? BFD_RELOC_AARCH64_TLSLE_MOVW_TPREL_G0_NC
4978 : BFD_RELOC_AARCH64_TLSIE_LDNN_GOTTPREL_LO12_NC
);
4980 case BFD_RELOC_AARCH64_TLSIE_ADR_GOTTPREL_PAGE21
:
4981 return is_local
? BFD_RELOC_AARCH64_TLSLE_MOVW_TPREL_G1
: r_type
;
4983 case BFD_RELOC_AARCH64_TLSIE_LDNN_GOTTPREL_LO12_NC
:
4984 return is_local
? BFD_RELOC_AARCH64_TLSLE_MOVW_TPREL_G0_NC
: r_type
;
4986 case BFD_RELOC_AARCH64_TLSIE_LD_GOTTPREL_PREL19
:
4989 case BFD_RELOC_AARCH64_TLSGD_ADR_PREL21
:
4991 ? BFD_RELOC_AARCH64_TLSLE_ADD_TPREL_HI12
4992 : BFD_RELOC_AARCH64_TLSIE_LD_GOTTPREL_PREL19
);
4994 case BFD_RELOC_AARCH64_TLSDESC_ADD
:
4995 case BFD_RELOC_AARCH64_TLSDESC_ADD_LO12
:
4996 case BFD_RELOC_AARCH64_TLSDESC_CALL
:
4997 /* Instructions with these relocations will become NOPs. */
4998 return BFD_RELOC_AARCH64_NONE
;
5000 case BFD_RELOC_AARCH64_TLSLD_ADD_LO12_NC
:
5001 case BFD_RELOC_AARCH64_TLSLD_ADR_PAGE21
:
5002 case BFD_RELOC_AARCH64_TLSLD_ADR_PREL21
:
5003 return is_local
? BFD_RELOC_AARCH64_NONE
: r_type
;
5006 case BFD_RELOC_AARCH64_TLSGD_MOVW_G0_NC
:
5008 ? BFD_RELOC_AARCH64_TLSLE_MOVW_TPREL_G1_NC
5009 : BFD_RELOC_AARCH64_TLSIE_MOVW_GOTTPREL_G0_NC
;
5011 case BFD_RELOC_AARCH64_TLSGD_MOVW_G1
:
5013 ? BFD_RELOC_AARCH64_TLSLE_MOVW_TPREL_G2
5014 : BFD_RELOC_AARCH64_TLSIE_MOVW_GOTTPREL_G1
;
5025 aarch64_reloc_got_type (bfd_reloc_code_real_type r_type
)
5029 case BFD_RELOC_AARCH64_ADR_GOT_PAGE
:
5030 case BFD_RELOC_AARCH64_GOT_LD_PREL19
:
5031 case BFD_RELOC_AARCH64_LD32_GOTPAGE_LO14
:
5032 case BFD_RELOC_AARCH64_LD32_GOT_LO12_NC
:
5033 case BFD_RELOC_AARCH64_LD64_GOTOFF_LO15
:
5034 case BFD_RELOC_AARCH64_LD64_GOTPAGE_LO15
:
5035 case BFD_RELOC_AARCH64_LD64_GOT_LO12_NC
:
5036 case BFD_RELOC_AARCH64_MOVW_GOTOFF_G0_NC
:
5037 case BFD_RELOC_AARCH64_MOVW_GOTOFF_G1
:
5040 case BFD_RELOC_AARCH64_TLSGD_ADD_LO12_NC
:
5041 case BFD_RELOC_AARCH64_TLSGD_ADR_PAGE21
:
5042 case BFD_RELOC_AARCH64_TLSGD_ADR_PREL21
:
5043 case BFD_RELOC_AARCH64_TLSGD_MOVW_G0_NC
:
5044 case BFD_RELOC_AARCH64_TLSGD_MOVW_G1
:
5045 case BFD_RELOC_AARCH64_TLSLD_ADD_LO12_NC
:
5046 case BFD_RELOC_AARCH64_TLSLD_ADR_PAGE21
:
5047 case BFD_RELOC_AARCH64_TLSLD_ADR_PREL21
:
5050 case BFD_RELOC_AARCH64_TLSDESC_ADD
:
5051 case BFD_RELOC_AARCH64_TLSDESC_ADD_LO12
:
5052 case BFD_RELOC_AARCH64_TLSDESC_ADR_PAGE21
:
5053 case BFD_RELOC_AARCH64_TLSDESC_ADR_PREL21
:
5054 case BFD_RELOC_AARCH64_TLSDESC_CALL
:
5055 case BFD_RELOC_AARCH64_TLSDESC_LD32_LO12_NC
:
5056 case BFD_RELOC_AARCH64_TLSDESC_LD64_LO12
:
5057 case BFD_RELOC_AARCH64_TLSDESC_LD_PREL19
:
5058 case BFD_RELOC_AARCH64_TLSDESC_LDR
:
5059 case BFD_RELOC_AARCH64_TLSDESC_OFF_G0_NC
:
5060 case BFD_RELOC_AARCH64_TLSDESC_OFF_G1
:
5061 return GOT_TLSDESC_GD
;
5063 case BFD_RELOC_AARCH64_TLSIE_ADR_GOTTPREL_PAGE21
:
5064 case BFD_RELOC_AARCH64_TLSIE_LD32_GOTTPREL_LO12_NC
:
5065 case BFD_RELOC_AARCH64_TLSIE_LD64_GOTTPREL_LO12_NC
:
5066 case BFD_RELOC_AARCH64_TLSIE_LD_GOTTPREL_PREL19
:
5067 case BFD_RELOC_AARCH64_TLSIE_MOVW_GOTTPREL_G0_NC
:
5068 case BFD_RELOC_AARCH64_TLSIE_MOVW_GOTTPREL_G1
:
5078 aarch64_can_relax_tls (bfd
*input_bfd
,
5079 struct bfd_link_info
*info
,
5080 bfd_reloc_code_real_type r_type
,
5081 struct elf_link_hash_entry
*h
,
5082 unsigned long r_symndx
)
5084 unsigned int symbol_got_type
;
5085 unsigned int reloc_got_type
;
5087 if (! IS_AARCH64_TLS_RELAX_RELOC (r_type
))
5090 symbol_got_type
= elfNN_aarch64_symbol_got_type (h
, input_bfd
, r_symndx
);
5091 reloc_got_type
= aarch64_reloc_got_type (r_type
);
5093 if (symbol_got_type
== GOT_TLS_IE
&& GOT_TLS_GD_ANY_P (reloc_got_type
))
5096 if (!bfd_link_executable (info
))
5099 if (h
&& h
->root
.type
== bfd_link_hash_undefweak
)
5105 /* Given the relocation code R_TYPE, return the relaxed bfd reloc
5108 static bfd_reloc_code_real_type
5109 aarch64_tls_transition (bfd
*input_bfd
,
5110 struct bfd_link_info
*info
,
5111 unsigned int r_type
,
5112 struct elf_link_hash_entry
*h
,
5113 unsigned long r_symndx
)
5115 bfd_reloc_code_real_type bfd_r_type
5116 = elfNN_aarch64_bfd_reloc_from_type (input_bfd
, r_type
);
5118 if (! aarch64_can_relax_tls (input_bfd
, info
, bfd_r_type
, h
, r_symndx
))
5121 return aarch64_tls_transition_without_check (bfd_r_type
, h
);
5124 /* Return the base VMA address which should be subtracted from real addresses
5125 when resolving R_AARCH64_TLS_DTPREL relocation. */
5128 dtpoff_base (struct bfd_link_info
*info
)
5130 /* If tls_sec is NULL, we should have signalled an error already. */
5131 BFD_ASSERT (elf_hash_table (info
)->tls_sec
!= NULL
);
5132 return elf_hash_table (info
)->tls_sec
->vma
;
5135 /* Return the base VMA address which should be subtracted from real addresses
5136 when resolving R_AARCH64_TLS_GOTTPREL64 relocations. */
5139 tpoff_base (struct bfd_link_info
*info
)
5141 struct elf_link_hash_table
*htab
= elf_hash_table (info
);
5143 /* If tls_sec is NULL, we should have signalled an error already. */
5144 BFD_ASSERT (htab
->tls_sec
!= NULL
);
5146 bfd_vma base
= align_power ((bfd_vma
) TCB_SIZE
,
5147 htab
->tls_sec
->alignment_power
);
5148 return htab
->tls_sec
->vma
- base
;
5152 symbol_got_offset_ref (bfd
*input_bfd
, struct elf_link_hash_entry
*h
,
5153 unsigned long r_symndx
)
5155 /* Calculate the address of the GOT entry for symbol
5156 referred to in h. */
5158 return &h
->got
.offset
;
5162 struct elf_aarch64_local_symbol
*l
;
5164 l
= elf_aarch64_locals (input_bfd
);
5165 return &l
[r_symndx
].got_offset
;
5170 symbol_got_offset_mark (bfd
*input_bfd
, struct elf_link_hash_entry
*h
,
5171 unsigned long r_symndx
)
5174 p
= symbol_got_offset_ref (input_bfd
, h
, r_symndx
);
5179 symbol_got_offset_mark_p (bfd
*input_bfd
, struct elf_link_hash_entry
*h
,
5180 unsigned long r_symndx
)
5183 value
= * symbol_got_offset_ref (input_bfd
, h
, r_symndx
);
5188 symbol_got_offset (bfd
*input_bfd
, struct elf_link_hash_entry
*h
,
5189 unsigned long r_symndx
)
5192 value
= * symbol_got_offset_ref (input_bfd
, h
, r_symndx
);
5198 symbol_tlsdesc_got_offset_ref (bfd
*input_bfd
, struct elf_link_hash_entry
*h
,
5199 unsigned long r_symndx
)
5201 /* Calculate the address of the GOT entry for symbol
5202 referred to in h. */
5205 struct elf_aarch64_link_hash_entry
*eh
;
5206 eh
= (struct elf_aarch64_link_hash_entry
*) h
;
5207 return &eh
->tlsdesc_got_jump_table_offset
;
5212 struct elf_aarch64_local_symbol
*l
;
5214 l
= elf_aarch64_locals (input_bfd
);
5215 return &l
[r_symndx
].tlsdesc_got_jump_table_offset
;
5220 symbol_tlsdesc_got_offset_mark (bfd
*input_bfd
, struct elf_link_hash_entry
*h
,
5221 unsigned long r_symndx
)
5224 p
= symbol_tlsdesc_got_offset_ref (input_bfd
, h
, r_symndx
);
5229 symbol_tlsdesc_got_offset_mark_p (bfd
*input_bfd
,
5230 struct elf_link_hash_entry
*h
,
5231 unsigned long r_symndx
)
5234 value
= * symbol_tlsdesc_got_offset_ref (input_bfd
, h
, r_symndx
);
5239 symbol_tlsdesc_got_offset (bfd
*input_bfd
, struct elf_link_hash_entry
*h
,
5240 unsigned long r_symndx
)
5243 value
= * symbol_tlsdesc_got_offset_ref (input_bfd
, h
, r_symndx
);
5248 /* Data for make_branch_to_erratum_835769_stub(). */
5250 struct erratum_835769_branch_to_stub_data
5252 struct bfd_link_info
*info
;
5253 asection
*output_section
;
5257 /* Helper to insert branches to erratum 835769 stubs in the right
5258 places for a particular section. */
5261 make_branch_to_erratum_835769_stub (struct bfd_hash_entry
*gen_entry
,
5264 struct elf_aarch64_stub_hash_entry
*stub_entry
;
5265 struct erratum_835769_branch_to_stub_data
*data
;
5267 unsigned long branch_insn
= 0;
5268 bfd_vma veneered_insn_loc
, veneer_entry_loc
;
5269 bfd_signed_vma branch_offset
;
5270 unsigned int target
;
5273 stub_entry
= (struct elf_aarch64_stub_hash_entry
*) gen_entry
;
5274 data
= (struct erratum_835769_branch_to_stub_data
*) in_arg
;
5276 if (stub_entry
->target_section
!= data
->output_section
5277 || stub_entry
->stub_type
!= aarch64_stub_erratum_835769_veneer
)
5280 contents
= data
->contents
;
5281 veneered_insn_loc
= stub_entry
->target_section
->output_section
->vma
5282 + stub_entry
->target_section
->output_offset
5283 + stub_entry
->target_value
;
5284 veneer_entry_loc
= stub_entry
->stub_sec
->output_section
->vma
5285 + stub_entry
->stub_sec
->output_offset
5286 + stub_entry
->stub_offset
;
5287 branch_offset
= veneer_entry_loc
- veneered_insn_loc
;
5289 abfd
= stub_entry
->target_section
->owner
;
5290 if (!aarch64_valid_branch_p (veneer_entry_loc
, veneered_insn_loc
))
5292 (_("%pB: error: erratum 835769 stub out "
5293 "of range (input file too large)"), abfd
);
5295 target
= stub_entry
->target_value
;
5296 branch_insn
= 0x14000000;
5297 branch_offset
>>= 2;
5298 branch_offset
&= 0x3ffffff;
5299 branch_insn
|= branch_offset
;
5300 bfd_putl32 (branch_insn
, &contents
[target
]);
5307 _bfd_aarch64_erratum_843419_branch_to_stub (struct bfd_hash_entry
*gen_entry
,
5310 struct elf_aarch64_stub_hash_entry
*stub_entry
5311 = (struct elf_aarch64_stub_hash_entry
*) gen_entry
;
5312 struct erratum_835769_branch_to_stub_data
*data
5313 = (struct erratum_835769_branch_to_stub_data
*) in_arg
;
5314 struct bfd_link_info
*info
;
5315 struct elf_aarch64_link_hash_table
*htab
;
5323 contents
= data
->contents
;
5324 section
= data
->output_section
;
5326 htab
= elf_aarch64_hash_table (info
);
5328 if (stub_entry
->target_section
!= section
5329 || stub_entry
->stub_type
!= aarch64_stub_erratum_843419_veneer
)
5332 BFD_ASSERT (((htab
->fix_erratum_843419
& ERRAT_ADRP
) && stub_entry
->stub_sec
)
5333 || (htab
->fix_erratum_843419
& ERRAT_ADR
));
5335 /* Only update the stub section if we have one. We should always have one if
5336 we're allowed to use the ADRP errata workaround, otherwise it is not
5338 if (stub_entry
->stub_sec
)
5340 insn
= bfd_getl32 (contents
+ stub_entry
->target_value
);
5342 stub_entry
->stub_sec
->contents
+ stub_entry
->stub_offset
);
5345 place
= (section
->output_section
->vma
+ section
->output_offset
5346 + stub_entry
->adrp_offset
);
5347 insn
= bfd_getl32 (contents
+ stub_entry
->adrp_offset
);
5349 if (!_bfd_aarch64_adrp_p (insn
))
5352 bfd_signed_vma imm
=
5353 (_bfd_aarch64_sign_extend
5354 ((bfd_vma
) _bfd_aarch64_decode_adrp_imm (insn
) << 12, 33)
5357 if ((htab
->fix_erratum_843419
& ERRAT_ADR
)
5358 && (imm
>= AARCH64_MIN_ADRP_IMM
&& imm
<= AARCH64_MAX_ADRP_IMM
))
5360 insn
= (_bfd_aarch64_reencode_adr_imm (AARCH64_ADR_OP
, imm
)
5361 | AARCH64_RT (insn
));
5362 bfd_putl32 (insn
, contents
+ stub_entry
->adrp_offset
);
5363 /* Stub is not needed, don't map it out. */
5364 stub_entry
->stub_type
= aarch64_stub_none
;
5366 else if (htab
->fix_erratum_843419
& ERRAT_ADRP
)
5368 bfd_vma veneered_insn_loc
;
5369 bfd_vma veneer_entry_loc
;
5370 bfd_signed_vma branch_offset
;
5371 uint32_t branch_insn
;
5373 veneered_insn_loc
= stub_entry
->target_section
->output_section
->vma
5374 + stub_entry
->target_section
->output_offset
5375 + stub_entry
->target_value
;
5376 veneer_entry_loc
= stub_entry
->stub_sec
->output_section
->vma
5377 + stub_entry
->stub_sec
->output_offset
5378 + stub_entry
->stub_offset
;
5379 branch_offset
= veneer_entry_loc
- veneered_insn_loc
;
5381 abfd
= stub_entry
->target_section
->owner
;
5382 if (!aarch64_valid_branch_p (veneer_entry_loc
, veneered_insn_loc
))
5384 (_("%pB: error: erratum 843419 stub out "
5385 "of range (input file too large)"), abfd
);
5387 branch_insn
= 0x14000000;
5388 branch_offset
>>= 2;
5389 branch_offset
&= 0x3ffffff;
5390 branch_insn
|= branch_offset
;
5391 bfd_putl32 (branch_insn
, contents
+ stub_entry
->target_value
);
5395 abfd
= stub_entry
->target_section
->owner
;
5397 (_("%pB: error: erratum 843419 immediate 0x%" BFD_VMA_FMT
"x "
5398 "out of range for ADR (input file too large) and "
5399 "--fix-cortex-a53-843419=adr used. Run the linker with "
5400 "--fix-cortex-a53-843419=full instead"), abfd
, imm
);
5401 bfd_set_error (bfd_error_bad_value
);
5402 /* This function is called inside a hashtable traversal and the error
5403 handlers called above turn into non-fatal errors. Which means this
5404 case ld returns an exit code 0 and also produces a broken object file.
5405 To prevent this, issue a hard abort. */
5413 elfNN_aarch64_write_section (bfd
*output_bfd ATTRIBUTE_UNUSED
,
5414 struct bfd_link_info
*link_info
,
5419 struct elf_aarch64_link_hash_table
*globals
=
5420 elf_aarch64_hash_table (link_info
);
5422 if (globals
== NULL
)
5425 /* Fix code to point to erratum 835769 stubs. */
5426 if (globals
->fix_erratum_835769
)
5428 struct erratum_835769_branch_to_stub_data data
;
5430 data
.info
= link_info
;
5431 data
.output_section
= sec
;
5432 data
.contents
= contents
;
5433 bfd_hash_traverse (&globals
->stub_hash_table
,
5434 make_branch_to_erratum_835769_stub
, &data
);
5437 if (globals
->fix_erratum_843419
)
5439 struct erratum_835769_branch_to_stub_data data
;
5441 data
.info
= link_info
;
5442 data
.output_section
= sec
;
5443 data
.contents
= contents
;
5444 bfd_hash_traverse (&globals
->stub_hash_table
,
5445 _bfd_aarch64_erratum_843419_branch_to_stub
, &data
);
5451 /* Return TRUE if RELOC is a relocation against the base of GOT table. */
5454 aarch64_relocation_aginst_gp_p (bfd_reloc_code_real_type reloc
)
5456 return (reloc
== BFD_RELOC_AARCH64_LD32_GOTPAGE_LO14
5457 || reloc
== BFD_RELOC_AARCH64_LD64_GOTPAGE_LO15
5458 || reloc
== BFD_RELOC_AARCH64_LD64_GOTOFF_LO15
5459 || reloc
== BFD_RELOC_AARCH64_MOVW_GOTOFF_G0_NC
5460 || reloc
== BFD_RELOC_AARCH64_MOVW_GOTOFF_G1
);
5463 /* Perform a relocation as part of a final link. The input relocation type
5464 should be TLS relaxed. */
5466 static bfd_reloc_status_type
5467 elfNN_aarch64_final_link_relocate (reloc_howto_type
*howto
,
5470 asection
*input_section
,
5472 Elf_Internal_Rela
*rel
,
5474 struct bfd_link_info
*info
,
5476 struct elf_link_hash_entry
*h
,
5477 bfd_boolean
*unresolved_reloc_p
,
5478 bfd_boolean save_addend
,
5479 bfd_vma
*saved_addend
,
5480 Elf_Internal_Sym
*sym
)
5482 Elf_Internal_Shdr
*symtab_hdr
;
5483 unsigned int r_type
= howto
->type
;
5484 bfd_reloc_code_real_type bfd_r_type
5485 = elfNN_aarch64_bfd_reloc_from_howto (howto
);
5486 unsigned long r_symndx
;
5487 bfd_byte
*hit_data
= contents
+ rel
->r_offset
;
5488 bfd_vma place
, off
, got_entry_addr
= 0;
5489 bfd_signed_vma signed_addend
;
5490 struct elf_aarch64_link_hash_table
*globals
;
5491 bfd_boolean weak_undef_p
;
5492 bfd_boolean relative_reloc
;
5494 bfd_vma orig_value
= value
;
5495 bfd_boolean resolved_to_zero
;
5496 bfd_boolean abs_symbol_p
;
5498 globals
= elf_aarch64_hash_table (info
);
5500 symtab_hdr
= &elf_symtab_hdr (input_bfd
);
5502 BFD_ASSERT (is_aarch64_elf (input_bfd
));
5504 r_symndx
= ELFNN_R_SYM (rel
->r_info
);
5506 place
= input_section
->output_section
->vma
5507 + input_section
->output_offset
+ rel
->r_offset
;
5509 /* Get addend, accumulating the addend for consecutive relocs
5510 which refer to the same offset. */
5511 signed_addend
= saved_addend
? *saved_addend
: 0;
5512 signed_addend
+= rel
->r_addend
;
5514 weak_undef_p
= (h
? h
->root
.type
== bfd_link_hash_undefweak
5515 : bfd_is_und_section (sym_sec
));
5516 abs_symbol_p
= h
!= NULL
&& bfd_is_abs_symbol (&h
->root
);
5519 /* Since STT_GNU_IFUNC symbol must go through PLT, we handle
5520 it here if it is defined in a non-shared object. */
5522 && h
->type
== STT_GNU_IFUNC
5529 if ((input_section
->flags
& SEC_ALLOC
) == 0)
5531 /* If this is a SHT_NOTE section without SHF_ALLOC, treat
5532 STT_GNU_IFUNC symbol as STT_FUNC. */
5533 if (elf_section_type (input_section
) == SHT_NOTE
)
5536 /* Dynamic relocs are not propagated for SEC_DEBUGGING
5537 sections because such sections are not SEC_ALLOC and
5538 thus ld.so will not process them. */
5539 if ((input_section
->flags
& SEC_DEBUGGING
) != 0)
5540 return bfd_reloc_ok
;
5542 if (h
->root
.root
.string
)
5543 name
= h
->root
.root
.string
;
5545 name
= bfd_elf_sym_name (input_bfd
, symtab_hdr
, sym
, NULL
);
5547 /* xgettext:c-format */
5548 (_("%pB(%pA+%#" PRIx64
"): "
5549 "unresolvable %s relocation against symbol `%s'"),
5550 input_bfd
, input_section
, (uint64_t) rel
->r_offset
,
5552 bfd_set_error (bfd_error_bad_value
);
5553 return bfd_reloc_notsupported
;
5555 else if (h
->plt
.offset
== (bfd_vma
) -1)
5556 goto bad_ifunc_reloc
;
5558 /* STT_GNU_IFUNC symbol must go through PLT. */
5559 plt
= globals
->root
.splt
? globals
->root
.splt
: globals
->root
.iplt
;
5560 value
= (plt
->output_section
->vma
+ plt
->output_offset
+ h
->plt
.offset
);
5566 if (h
->root
.root
.string
)
5567 name
= h
->root
.root
.string
;
5569 name
= bfd_elf_sym_name (input_bfd
, symtab_hdr
, sym
,
5572 /* xgettext:c-format */
5573 (_("%pB: relocation %s against STT_GNU_IFUNC "
5574 "symbol `%s' isn't handled by %s"), input_bfd
,
5575 howto
->name
, name
, __FUNCTION__
);
5576 bfd_set_error (bfd_error_bad_value
);
5577 return bfd_reloc_notsupported
;
5579 case BFD_RELOC_AARCH64_NN
:
5580 if (rel
->r_addend
!= 0)
5582 if (h
->root
.root
.string
)
5583 name
= h
->root
.root
.string
;
5585 name
= bfd_elf_sym_name (input_bfd
, symtab_hdr
,
5588 /* xgettext:c-format */
5589 (_("%pB: relocation %s against STT_GNU_IFUNC "
5590 "symbol `%s' has non-zero addend: %" PRId64
),
5591 input_bfd
, howto
->name
, name
, (int64_t) rel
->r_addend
);
5592 bfd_set_error (bfd_error_bad_value
);
5593 return bfd_reloc_notsupported
;
5596 /* Generate dynamic relocation only when there is a
5597 non-GOT reference in a shared object. */
5598 if (bfd_link_pic (info
) && h
->non_got_ref
)
5600 Elf_Internal_Rela outrel
;
5603 /* Need a dynamic relocation to get the real function
5605 outrel
.r_offset
= _bfd_elf_section_offset (output_bfd
,
5609 if (outrel
.r_offset
== (bfd_vma
) -1
5610 || outrel
.r_offset
== (bfd_vma
) -2)
5613 outrel
.r_offset
+= (input_section
->output_section
->vma
5614 + input_section
->output_offset
);
5616 if (h
->dynindx
== -1
5618 || bfd_link_executable (info
))
5620 /* This symbol is resolved locally. */
5621 outrel
.r_info
= ELFNN_R_INFO (0, AARCH64_R (IRELATIVE
));
5622 outrel
.r_addend
= (h
->root
.u
.def
.value
5623 + h
->root
.u
.def
.section
->output_section
->vma
5624 + h
->root
.u
.def
.section
->output_offset
);
5628 outrel
.r_info
= ELFNN_R_INFO (h
->dynindx
, r_type
);
5629 outrel
.r_addend
= 0;
5632 sreloc
= globals
->root
.irelifunc
;
5633 elf_append_rela (output_bfd
, sreloc
, &outrel
);
5635 /* If this reloc is against an external symbol, we
5636 do not want to fiddle with the addend. Otherwise,
5637 we need to include the symbol value so that it
5638 becomes an addend for the dynamic reloc. For an
5639 internal symbol, we have updated addend. */
5640 return bfd_reloc_ok
;
5643 case BFD_RELOC_AARCH64_CALL26
:
5644 case BFD_RELOC_AARCH64_JUMP26
:
5645 value
= _bfd_aarch64_elf_resolve_relocation (input_bfd
, bfd_r_type
,
5649 return _bfd_aarch64_elf_put_addend (input_bfd
, hit_data
, bfd_r_type
,
5651 case BFD_RELOC_AARCH64_ADR_GOT_PAGE
:
5652 case BFD_RELOC_AARCH64_GOT_LD_PREL19
:
5653 case BFD_RELOC_AARCH64_LD32_GOTPAGE_LO14
:
5654 case BFD_RELOC_AARCH64_LD32_GOT_LO12_NC
:
5655 case BFD_RELOC_AARCH64_LD64_GOTPAGE_LO15
:
5656 case BFD_RELOC_AARCH64_MOVW_GOTOFF_G0_NC
:
5657 case BFD_RELOC_AARCH64_MOVW_GOTOFF_G1
:
5658 case BFD_RELOC_AARCH64_LD64_GOTOFF_LO15
:
5659 case BFD_RELOC_AARCH64_LD64_GOT_LO12_NC
:
5660 base_got
= globals
->root
.sgot
;
5661 off
= h
->got
.offset
;
5663 if (base_got
== NULL
)
5666 if (off
== (bfd_vma
) -1)
5670 /* We can't use h->got.offset here to save state, or
5671 even just remember the offset, as finish_dynamic_symbol
5672 would use that as offset into .got. */
5674 if (globals
->root
.splt
!= NULL
)
5676 plt_index
= ((h
->plt
.offset
- globals
->plt_header_size
) /
5677 globals
->plt_entry_size
);
5678 off
= (plt_index
+ 3) * GOT_ENTRY_SIZE
;
5679 base_got
= globals
->root
.sgotplt
;
5683 plt_index
= h
->plt
.offset
/ globals
->plt_entry_size
;
5684 off
= plt_index
* GOT_ENTRY_SIZE
;
5685 base_got
= globals
->root
.igotplt
;
5688 if (h
->dynindx
== -1
5692 /* This references the local definition. We must
5693 initialize this entry in the global offset table.
5694 Since the offset must always be a multiple of 8,
5695 we use the least significant bit to record
5696 whether we have initialized it already.
5698 When doing a dynamic link, we create a .rela.got
5699 relocation entry to initialize the value. This
5700 is done in the finish_dynamic_symbol routine. */
5705 bfd_put_NN (output_bfd
, value
,
5706 base_got
->contents
+ off
);
5707 /* Note that this is harmless as -1 | 1 still is -1. */
5711 value
= (base_got
->output_section
->vma
5712 + base_got
->output_offset
+ off
);
5715 value
= aarch64_calculate_got_entry_vma (h
, globals
, info
,
5717 unresolved_reloc_p
);
5719 if (aarch64_relocation_aginst_gp_p (bfd_r_type
))
5720 addend
= (globals
->root
.sgot
->output_section
->vma
5721 + globals
->root
.sgot
->output_offset
);
5723 value
= _bfd_aarch64_elf_resolve_relocation (input_bfd
, bfd_r_type
,
5725 addend
, weak_undef_p
);
5726 return _bfd_aarch64_elf_put_addend (input_bfd
, hit_data
, bfd_r_type
, howto
, value
);
5727 case BFD_RELOC_AARCH64_ADD_LO12
:
5728 case BFD_RELOC_AARCH64_ADR_HI21_PCREL
:
5734 resolved_to_zero
= (h
!= NULL
5735 && UNDEFWEAK_NO_DYNAMIC_RELOC (info
, h
));
5739 case BFD_RELOC_AARCH64_NONE
:
5740 case BFD_RELOC_AARCH64_TLSDESC_ADD
:
5741 case BFD_RELOC_AARCH64_TLSDESC_CALL
:
5742 case BFD_RELOC_AARCH64_TLSDESC_LDR
:
5743 *unresolved_reloc_p
= FALSE
;
5744 return bfd_reloc_ok
;
5746 case BFD_RELOC_AARCH64_NN
:
5748 /* When generating a shared object or relocatable executable, these
5749 relocations are copied into the output file to be resolved at
5751 if (((bfd_link_pic (info
)
5752 || globals
->root
.is_relocatable_executable
)
5753 && (input_section
->flags
& SEC_ALLOC
)
5755 || (ELF_ST_VISIBILITY (h
->other
) == STV_DEFAULT
5756 && !resolved_to_zero
)
5757 || h
->root
.type
!= bfd_link_hash_undefweak
))
5758 /* Or we are creating an executable, we may need to keep relocations
5759 for symbols satisfied by a dynamic library if we manage to avoid
5760 copy relocs for the symbol. */
5761 || (ELIMINATE_COPY_RELOCS
5762 && !bfd_link_pic (info
)
5764 && (input_section
->flags
& SEC_ALLOC
)
5769 || h
->root
.type
== bfd_link_hash_undefweak
5770 || h
->root
.type
== bfd_link_hash_undefined
)))
5772 Elf_Internal_Rela outrel
;
5774 bfd_boolean skip
, relocate
;
5777 *unresolved_reloc_p
= FALSE
;
5782 outrel
.r_addend
= signed_addend
;
5784 _bfd_elf_section_offset (output_bfd
, info
, input_section
,
5786 if (outrel
.r_offset
== (bfd_vma
) - 1)
5788 else if (outrel
.r_offset
== (bfd_vma
) - 2)
5793 else if (abs_symbol_p
)
5795 /* Local absolute symbol. */
5796 skip
= (h
->forced_local
|| (h
->dynindx
== -1));
5800 outrel
.r_offset
+= (input_section
->output_section
->vma
5801 + input_section
->output_offset
);
5804 memset (&outrel
, 0, sizeof outrel
);
5807 && (!bfd_link_pic (info
)
5808 || !(bfd_link_pie (info
) || SYMBOLIC_BIND (info
, h
))
5809 || !h
->def_regular
))
5810 outrel
.r_info
= ELFNN_R_INFO (h
->dynindx
, r_type
);
5815 /* On SVR4-ish systems, the dynamic loader cannot
5816 relocate the text and data segments independently,
5817 so the symbol does not matter. */
5819 relocate
= globals
->no_apply_dynamic_relocs
? FALSE
: TRUE
;
5820 outrel
.r_info
= ELFNN_R_INFO (symbol
, AARCH64_R (RELATIVE
));
5821 outrel
.r_addend
+= value
;
5824 sreloc
= elf_section_data (input_section
)->sreloc
;
5825 if (sreloc
== NULL
|| sreloc
->contents
== NULL
)
5826 return bfd_reloc_notsupported
;
5828 loc
= sreloc
->contents
+ sreloc
->reloc_count
++ * RELOC_SIZE (globals
);
5829 bfd_elfNN_swap_reloca_out (output_bfd
, &outrel
, loc
);
5831 if (sreloc
->reloc_count
* RELOC_SIZE (globals
) > sreloc
->size
)
5833 /* Sanity to check that we have previously allocated
5834 sufficient space in the relocation section for the
5835 number of relocations we actually want to emit. */
5839 /* If this reloc is against an external symbol, we do not want to
5840 fiddle with the addend. Otherwise, we need to include the symbol
5841 value so that it becomes an addend for the dynamic reloc. */
5843 return bfd_reloc_ok
;
5845 return _bfd_final_link_relocate (howto
, input_bfd
, input_section
,
5846 contents
, rel
->r_offset
, value
,
5850 value
+= signed_addend
;
5853 case BFD_RELOC_AARCH64_CALL26
:
5854 case BFD_RELOC_AARCH64_JUMP26
:
5856 asection
*splt
= globals
->root
.splt
;
5857 bfd_boolean via_plt_p
=
5858 splt
!= NULL
&& h
!= NULL
&& h
->plt
.offset
!= (bfd_vma
) - 1;
5860 /* A call to an undefined weak symbol is converted to a jump to
5861 the next instruction unless a PLT entry will be created.
5862 The jump to the next instruction is optimized as a NOP.
5863 Do the same for local undefined symbols. */
5864 if (weak_undef_p
&& ! via_plt_p
)
5866 bfd_putl32 (INSN_NOP
, hit_data
);
5867 return bfd_reloc_ok
;
5870 /* If the call goes through a PLT entry, make sure to
5871 check distance to the right destination address. */
5873 value
= (splt
->output_section
->vma
5874 + splt
->output_offset
+ h
->plt
.offset
);
5876 /* Check if a stub has to be inserted because the destination
5878 struct elf_aarch64_stub_hash_entry
*stub_entry
= NULL
;
5880 /* If the branch destination is directed to plt stub, "value" will be
5881 the final destination, otherwise we should plus signed_addend, it may
5882 contain non-zero value, for example call to local function symbol
5883 which are turned into "sec_sym + sec_off", and sec_off is kept in
5885 if (! aarch64_valid_branch_p (via_plt_p
? value
: value
+ signed_addend
,
5887 /* The target is out of reach, so redirect the branch to
5888 the local stub for this function. */
5889 stub_entry
= elfNN_aarch64_get_stub_entry (input_section
, sym_sec
, h
,
5891 if (stub_entry
!= NULL
)
5893 value
= (stub_entry
->stub_offset
5894 + stub_entry
->stub_sec
->output_offset
5895 + stub_entry
->stub_sec
->output_section
->vma
);
5897 /* We have redirected the destination to stub entry address,
5898 so ignore any addend record in the original rela entry. */
5902 value
= _bfd_aarch64_elf_resolve_relocation (input_bfd
, bfd_r_type
,
5904 signed_addend
, weak_undef_p
);
5905 *unresolved_reloc_p
= FALSE
;
5908 case BFD_RELOC_AARCH64_16_PCREL
:
5909 case BFD_RELOC_AARCH64_32_PCREL
:
5910 case BFD_RELOC_AARCH64_64_PCREL
:
5911 case BFD_RELOC_AARCH64_ADR_HI21_NC_PCREL
:
5912 case BFD_RELOC_AARCH64_ADR_HI21_PCREL
:
5913 case BFD_RELOC_AARCH64_ADR_LO21_PCREL
:
5914 case BFD_RELOC_AARCH64_LD_LO19_PCREL
:
5915 case BFD_RELOC_AARCH64_MOVW_PREL_G0
:
5916 case BFD_RELOC_AARCH64_MOVW_PREL_G0_NC
:
5917 case BFD_RELOC_AARCH64_MOVW_PREL_G1
:
5918 case BFD_RELOC_AARCH64_MOVW_PREL_G1_NC
:
5919 case BFD_RELOC_AARCH64_MOVW_PREL_G2
:
5920 case BFD_RELOC_AARCH64_MOVW_PREL_G2_NC
:
5921 case BFD_RELOC_AARCH64_MOVW_PREL_G3
:
5922 if (bfd_link_pic (info
)
5923 && (input_section
->flags
& SEC_ALLOC
) != 0
5924 && (input_section
->flags
& SEC_READONLY
) != 0
5925 && !SYMBOL_REFERENCES_LOCAL (info
, h
))
5927 int howto_index
= bfd_r_type
- BFD_RELOC_AARCH64_RELOC_START
;
5930 /* xgettext:c-format */
5931 (_("%pB: relocation %s against symbol `%s' which may bind "
5932 "externally can not be used when making a shared object; "
5933 "recompile with -fPIC"),
5934 input_bfd
, elfNN_aarch64_howto_table
[howto_index
].name
,
5935 h
->root
.root
.string
);
5936 bfd_set_error (bfd_error_bad_value
);
5937 return bfd_reloc_notsupported
;
5941 case BFD_RELOC_AARCH64_16
:
5943 case BFD_RELOC_AARCH64_32
:
5945 case BFD_RELOC_AARCH64_ADD_LO12
:
5946 case BFD_RELOC_AARCH64_BRANCH19
:
5947 case BFD_RELOC_AARCH64_LDST128_LO12
:
5948 case BFD_RELOC_AARCH64_LDST16_LO12
:
5949 case BFD_RELOC_AARCH64_LDST32_LO12
:
5950 case BFD_RELOC_AARCH64_LDST64_LO12
:
5951 case BFD_RELOC_AARCH64_LDST8_LO12
:
5952 case BFD_RELOC_AARCH64_MOVW_G0
:
5953 case BFD_RELOC_AARCH64_MOVW_G0_NC
:
5954 case BFD_RELOC_AARCH64_MOVW_G0_S
:
5955 case BFD_RELOC_AARCH64_MOVW_G1
:
5956 case BFD_RELOC_AARCH64_MOVW_G1_NC
:
5957 case BFD_RELOC_AARCH64_MOVW_G1_S
:
5958 case BFD_RELOC_AARCH64_MOVW_G2
:
5959 case BFD_RELOC_AARCH64_MOVW_G2_NC
:
5960 case BFD_RELOC_AARCH64_MOVW_G2_S
:
5961 case BFD_RELOC_AARCH64_MOVW_G3
:
5962 case BFD_RELOC_AARCH64_TSTBR14
:
5963 value
= _bfd_aarch64_elf_resolve_relocation (input_bfd
, bfd_r_type
,
5965 signed_addend
, weak_undef_p
);
5968 case BFD_RELOC_AARCH64_ADR_GOT_PAGE
:
5969 case BFD_RELOC_AARCH64_GOT_LD_PREL19
:
5970 case BFD_RELOC_AARCH64_LD32_GOTPAGE_LO14
:
5971 case BFD_RELOC_AARCH64_LD32_GOT_LO12_NC
:
5972 case BFD_RELOC_AARCH64_LD64_GOTPAGE_LO15
:
5973 case BFD_RELOC_AARCH64_LD64_GOT_LO12_NC
:
5974 case BFD_RELOC_AARCH64_LD64_GOTOFF_LO15
:
5975 case BFD_RELOC_AARCH64_MOVW_GOTOFF_G0_NC
:
5976 case BFD_RELOC_AARCH64_MOVW_GOTOFF_G1
:
5977 if (globals
->root
.sgot
== NULL
)
5978 BFD_ASSERT (h
!= NULL
);
5980 relative_reloc
= FALSE
;
5985 /* If a symbol is not dynamic and is not undefined weak, bind it
5986 locally and generate a RELATIVE relocation under PIC mode.
5988 NOTE: one symbol may be referenced by several relocations, we
5989 should only generate one RELATIVE relocation for that symbol.
5990 Therefore, check GOT offset mark first. */
5991 if (h
->dynindx
== -1
5993 && h
->root
.type
!= bfd_link_hash_undefweak
5994 && bfd_link_pic (info
)
5995 && !symbol_got_offset_mark_p (input_bfd
, h
, r_symndx
))
5996 relative_reloc
= TRUE
;
5998 value
= aarch64_calculate_got_entry_vma (h
, globals
, info
, value
,
6000 unresolved_reloc_p
);
6001 /* Record the GOT entry address which will be used when generating
6002 RELATIVE relocation. */
6004 got_entry_addr
= value
;
6006 if (aarch64_relocation_aginst_gp_p (bfd_r_type
))
6007 addend
= (globals
->root
.sgot
->output_section
->vma
6008 + globals
->root
.sgot
->output_offset
);
6009 value
= _bfd_aarch64_elf_resolve_relocation (input_bfd
, bfd_r_type
,
6011 addend
, weak_undef_p
);
6016 struct elf_aarch64_local_symbol
*locals
6017 = elf_aarch64_locals (input_bfd
);
6021 int howto_index
= bfd_r_type
- BFD_RELOC_AARCH64_RELOC_START
;
6023 /* xgettext:c-format */
6024 (_("%pB: local symbol descriptor table be NULL when applying "
6025 "relocation %s against local symbol"),
6026 input_bfd
, elfNN_aarch64_howto_table
[howto_index
].name
);
6030 off
= symbol_got_offset (input_bfd
, h
, r_symndx
);
6031 base_got
= globals
->root
.sgot
;
6032 got_entry_addr
= (base_got
->output_section
->vma
6033 + base_got
->output_offset
+ off
);
6035 if (!symbol_got_offset_mark_p (input_bfd
, h
, r_symndx
))
6037 bfd_put_64 (output_bfd
, value
, base_got
->contents
+ off
);
6039 /* For local symbol, we have done absolute relocation in static
6040 linking stage. While for shared library, we need to update the
6041 content of GOT entry according to the shared object's runtime
6042 base address. So, we need to generate a R_AARCH64_RELATIVE reloc
6043 for dynamic linker. */
6044 if (bfd_link_pic (info
))
6045 relative_reloc
= TRUE
;
6047 symbol_got_offset_mark (input_bfd
, h
, r_symndx
);
6050 /* Update the relocation value to GOT entry addr as we have transformed
6051 the direct data access into indirect data access through GOT. */
6052 value
= got_entry_addr
;
6054 if (aarch64_relocation_aginst_gp_p (bfd_r_type
))
6055 addend
= base_got
->output_section
->vma
+ base_got
->output_offset
;
6057 value
= _bfd_aarch64_elf_resolve_relocation (input_bfd
, bfd_r_type
,
6059 addend
, weak_undef_p
);
6065 Elf_Internal_Rela outrel
;
6067 s
= globals
->root
.srelgot
;
6071 outrel
.r_offset
= got_entry_addr
;
6072 outrel
.r_info
= ELFNN_R_INFO (0, AARCH64_R (RELATIVE
));
6073 outrel
.r_addend
= orig_value
;
6074 elf_append_rela (output_bfd
, s
, &outrel
);
6078 case BFD_RELOC_AARCH64_TLSGD_ADD_LO12_NC
:
6079 case BFD_RELOC_AARCH64_TLSGD_ADR_PAGE21
:
6080 case BFD_RELOC_AARCH64_TLSGD_ADR_PREL21
:
6081 case BFD_RELOC_AARCH64_TLSIE_ADR_GOTTPREL_PAGE21
:
6082 case BFD_RELOC_AARCH64_TLSIE_LD32_GOTTPREL_LO12_NC
:
6083 case BFD_RELOC_AARCH64_TLSIE_LD64_GOTTPREL_LO12_NC
:
6084 case BFD_RELOC_AARCH64_TLSIE_LD_GOTTPREL_PREL19
:
6085 case BFD_RELOC_AARCH64_TLSLD_ADD_LO12_NC
:
6086 case BFD_RELOC_AARCH64_TLSLD_ADR_PAGE21
:
6087 case BFD_RELOC_AARCH64_TLSLD_ADR_PREL21
:
6088 if (globals
->root
.sgot
== NULL
)
6089 return bfd_reloc_notsupported
;
6091 value
= (symbol_got_offset (input_bfd
, h
, r_symndx
)
6092 + globals
->root
.sgot
->output_section
->vma
6093 + globals
->root
.sgot
->output_offset
);
6095 value
= _bfd_aarch64_elf_resolve_relocation (input_bfd
, bfd_r_type
,
6098 *unresolved_reloc_p
= FALSE
;
6101 case BFD_RELOC_AARCH64_TLSGD_MOVW_G0_NC
:
6102 case BFD_RELOC_AARCH64_TLSGD_MOVW_G1
:
6103 case BFD_RELOC_AARCH64_TLSIE_MOVW_GOTTPREL_G0_NC
:
6104 case BFD_RELOC_AARCH64_TLSIE_MOVW_GOTTPREL_G1
:
6105 if (globals
->root
.sgot
== NULL
)
6106 return bfd_reloc_notsupported
;
6108 value
= symbol_got_offset (input_bfd
, h
, r_symndx
);
6109 value
= _bfd_aarch64_elf_resolve_relocation (input_bfd
, bfd_r_type
,
6112 *unresolved_reloc_p
= FALSE
;
6115 case BFD_RELOC_AARCH64_TLSLD_ADD_DTPREL_HI12
:
6116 case BFD_RELOC_AARCH64_TLSLD_ADD_DTPREL_LO12
:
6117 case BFD_RELOC_AARCH64_TLSLD_ADD_DTPREL_LO12_NC
:
6118 case BFD_RELOC_AARCH64_TLSLD_LDST16_DTPREL_LO12
:
6119 case BFD_RELOC_AARCH64_TLSLD_LDST16_DTPREL_LO12_NC
:
6120 case BFD_RELOC_AARCH64_TLSLD_LDST32_DTPREL_LO12
:
6121 case BFD_RELOC_AARCH64_TLSLD_LDST32_DTPREL_LO12_NC
:
6122 case BFD_RELOC_AARCH64_TLSLD_LDST64_DTPREL_LO12
:
6123 case BFD_RELOC_AARCH64_TLSLD_LDST64_DTPREL_LO12_NC
:
6124 case BFD_RELOC_AARCH64_TLSLD_LDST8_DTPREL_LO12
:
6125 case BFD_RELOC_AARCH64_TLSLD_LDST8_DTPREL_LO12_NC
:
6126 case BFD_RELOC_AARCH64_TLSLD_MOVW_DTPREL_G0
:
6127 case BFD_RELOC_AARCH64_TLSLD_MOVW_DTPREL_G0_NC
:
6128 case BFD_RELOC_AARCH64_TLSLD_MOVW_DTPREL_G1
:
6129 case BFD_RELOC_AARCH64_TLSLD_MOVW_DTPREL_G1_NC
:
6130 case BFD_RELOC_AARCH64_TLSLD_MOVW_DTPREL_G2
:
6132 if (!(weak_undef_p
|| elf_hash_table (info
)->tls_sec
))
6134 int howto_index
= bfd_r_type
- BFD_RELOC_AARCH64_RELOC_START
;
6136 /* xgettext:c-format */
6137 (_("%pB: TLS relocation %s against undefined symbol `%s'"),
6138 input_bfd
, elfNN_aarch64_howto_table
[howto_index
].name
,
6139 h
->root
.root
.string
);
6140 bfd_set_error (bfd_error_bad_value
);
6141 return bfd_reloc_notsupported
;
6145 = weak_undef_p
? 0 : signed_addend
- dtpoff_base (info
);
6146 value
= _bfd_aarch64_elf_resolve_relocation (input_bfd
, bfd_r_type
,
6148 def_value
, weak_undef_p
);
6152 case BFD_RELOC_AARCH64_TLSLE_ADD_TPREL_HI12
:
6153 case BFD_RELOC_AARCH64_TLSLE_ADD_TPREL_LO12
:
6154 case BFD_RELOC_AARCH64_TLSLE_ADD_TPREL_LO12_NC
:
6155 case BFD_RELOC_AARCH64_TLSLE_LDST16_TPREL_LO12
:
6156 case BFD_RELOC_AARCH64_TLSLE_LDST16_TPREL_LO12_NC
:
6157 case BFD_RELOC_AARCH64_TLSLE_LDST32_TPREL_LO12
:
6158 case BFD_RELOC_AARCH64_TLSLE_LDST32_TPREL_LO12_NC
:
6159 case BFD_RELOC_AARCH64_TLSLE_LDST64_TPREL_LO12
:
6160 case BFD_RELOC_AARCH64_TLSLE_LDST64_TPREL_LO12_NC
:
6161 case BFD_RELOC_AARCH64_TLSLE_LDST8_TPREL_LO12
:
6162 case BFD_RELOC_AARCH64_TLSLE_LDST8_TPREL_LO12_NC
:
6163 case BFD_RELOC_AARCH64_TLSLE_MOVW_TPREL_G0
:
6164 case BFD_RELOC_AARCH64_TLSLE_MOVW_TPREL_G0_NC
:
6165 case BFD_RELOC_AARCH64_TLSLE_MOVW_TPREL_G1
:
6166 case BFD_RELOC_AARCH64_TLSLE_MOVW_TPREL_G1_NC
:
6167 case BFD_RELOC_AARCH64_TLSLE_MOVW_TPREL_G2
:
6169 if (!(weak_undef_p
|| elf_hash_table (info
)->tls_sec
))
6171 int howto_index
= bfd_r_type
- BFD_RELOC_AARCH64_RELOC_START
;
6173 /* xgettext:c-format */
6174 (_("%pB: TLS relocation %s against undefined symbol `%s'"),
6175 input_bfd
, elfNN_aarch64_howto_table
[howto_index
].name
,
6176 h
->root
.root
.string
);
6177 bfd_set_error (bfd_error_bad_value
);
6178 return bfd_reloc_notsupported
;
6182 = weak_undef_p
? 0 : signed_addend
- tpoff_base (info
);
6183 value
= _bfd_aarch64_elf_resolve_relocation (input_bfd
, bfd_r_type
,
6185 def_value
, weak_undef_p
);
6186 *unresolved_reloc_p
= FALSE
;
6190 case BFD_RELOC_AARCH64_TLSDESC_ADD_LO12
:
6191 case BFD_RELOC_AARCH64_TLSDESC_ADR_PAGE21
:
6192 case BFD_RELOC_AARCH64_TLSDESC_ADR_PREL21
:
6193 case BFD_RELOC_AARCH64_TLSDESC_LD32_LO12_NC
:
6194 case BFD_RELOC_AARCH64_TLSDESC_LD64_LO12
:
6195 case BFD_RELOC_AARCH64_TLSDESC_LD_PREL19
:
6196 if (globals
->root
.sgot
== NULL
)
6197 return bfd_reloc_notsupported
;
6198 value
= (symbol_tlsdesc_got_offset (input_bfd
, h
, r_symndx
)
6199 + globals
->root
.sgotplt
->output_section
->vma
6200 + globals
->root
.sgotplt
->output_offset
6201 + globals
->sgotplt_jump_table_size
);
6203 value
= _bfd_aarch64_elf_resolve_relocation (input_bfd
, bfd_r_type
,
6206 *unresolved_reloc_p
= FALSE
;
6209 case BFD_RELOC_AARCH64_TLSDESC_OFF_G0_NC
:
6210 case BFD_RELOC_AARCH64_TLSDESC_OFF_G1
:
6211 if (globals
->root
.sgot
== NULL
)
6212 return bfd_reloc_notsupported
;
6214 value
= (symbol_tlsdesc_got_offset (input_bfd
, h
, r_symndx
)
6215 + globals
->root
.sgotplt
->output_section
->vma
6216 + globals
->root
.sgotplt
->output_offset
6217 + globals
->sgotplt_jump_table_size
);
6219 value
-= (globals
->root
.sgot
->output_section
->vma
6220 + globals
->root
.sgot
->output_offset
);
6222 value
= _bfd_aarch64_elf_resolve_relocation (input_bfd
, bfd_r_type
,
6225 *unresolved_reloc_p
= FALSE
;
6229 return bfd_reloc_notsupported
;
6233 *saved_addend
= value
;
6235 /* Only apply the final relocation in a sequence. */
6237 return bfd_reloc_continue
;
6239 return _bfd_aarch64_elf_put_addend (input_bfd
, hit_data
, bfd_r_type
,
6243 /* LP64 and ILP32 operates on x- and w-registers respectively.
6244 Next definitions take into account the difference between
6245 corresponding machine codes. R means x-register if the target
6246 arch is LP64, and w-register if the target is ILP32. */
6249 # define add_R0_R0 (0x91000000)
6250 # define add_R0_R0_R1 (0x8b000020)
6251 # define add_R0_R1 (0x91400020)
6252 # define ldr_R0 (0x58000000)
6253 # define ldr_R0_mask(i) (i & 0xffffffe0)
6254 # define ldr_R0_x0 (0xf9400000)
6255 # define ldr_hw_R0 (0xf2a00000)
6256 # define movk_R0 (0xf2800000)
6257 # define movz_R0 (0xd2a00000)
6258 # define movz_hw_R0 (0xd2c00000)
6259 #else /*ARCH_SIZE == 32 */
6260 # define add_R0_R0 (0x11000000)
6261 # define add_R0_R0_R1 (0x0b000020)
6262 # define add_R0_R1 (0x11400020)
6263 # define ldr_R0 (0x18000000)
6264 # define ldr_R0_mask(i) (i & 0xbfffffe0)
6265 # define ldr_R0_x0 (0xb9400000)
6266 # define ldr_hw_R0 (0x72a00000)
6267 # define movk_R0 (0x72800000)
6268 # define movz_R0 (0x52a00000)
6269 # define movz_hw_R0 (0x52c00000)
6272 /* Structure to hold payload for _bfd_aarch64_erratum_843419_clear_stub,
6273 it is used to identify the stub information to reset. */
6275 struct erratum_843419_branch_to_stub_clear_data
6277 bfd_vma adrp_offset
;
6278 asection
*output_section
;
6281 /* Clear the erratum information for GEN_ENTRY if the ADRP_OFFSET and
6282 section inside IN_ARG matches. The clearing is done by setting the
6283 stub_type to none. */
6286 _bfd_aarch64_erratum_843419_clear_stub (struct bfd_hash_entry
*gen_entry
,
6289 struct elf_aarch64_stub_hash_entry
*stub_entry
6290 = (struct elf_aarch64_stub_hash_entry
*) gen_entry
;
6291 struct erratum_843419_branch_to_stub_clear_data
*data
6292 = (struct erratum_843419_branch_to_stub_clear_data
*) in_arg
;
6294 if (stub_entry
->target_section
!= data
->output_section
6295 || stub_entry
->stub_type
!= aarch64_stub_erratum_843419_veneer
6296 || stub_entry
->adrp_offset
!= data
->adrp_offset
)
6299 /* Change the stub type instead of removing the entry, removing from the hash
6300 table would be slower and we have already reserved the memory for the entry
6301 so there wouldn't be much gain. Changing the stub also keeps around a
6302 record of what was there before. */
6303 stub_entry
->stub_type
= aarch64_stub_none
;
6305 /* We're done and there could have been only one matching stub at that
6306 particular offset, so abort further traversal. */
6310 /* TLS Relaxations may relax an adrp sequence that matches the erratum 843419
6311 sequence. In this case the erratum no longer applies and we need to remove
6312 the entry from the pending stub generation. This clears matching adrp insn
6313 at ADRP_OFFSET in INPUT_SECTION in the stub table defined in GLOBALS. */
6316 clear_erratum_843419_entry (struct elf_aarch64_link_hash_table
*globals
,
6317 bfd_vma adrp_offset
, asection
*input_section
)
6319 if (globals
->fix_erratum_843419
& ERRAT_ADRP
)
6321 struct erratum_843419_branch_to_stub_clear_data data
;
6322 data
.adrp_offset
= adrp_offset
;
6323 data
.output_section
= input_section
;
6325 bfd_hash_traverse (&globals
->stub_hash_table
,
6326 _bfd_aarch64_erratum_843419_clear_stub
, &data
);
6330 /* Handle TLS relaxations. Relaxing is possible for symbols that use
6331 R_AARCH64_TLSDESC_ADR_{PAGE, LD64_LO12_NC, ADD_LO12_NC} during a static
6334 Return bfd_reloc_ok if we're done, bfd_reloc_continue if the caller
6335 is to then call final_link_relocate. Return other values in the
6338 static bfd_reloc_status_type
6339 elfNN_aarch64_tls_relax (struct elf_aarch64_link_hash_table
*globals
,
6340 bfd
*input_bfd
, asection
*input_section
,
6341 bfd_byte
*contents
, Elf_Internal_Rela
*rel
,
6342 struct elf_link_hash_entry
*h
)
6344 bfd_boolean is_local
= h
== NULL
;
6345 unsigned int r_type
= ELFNN_R_TYPE (rel
->r_info
);
6348 BFD_ASSERT (globals
&& input_bfd
&& contents
&& rel
);
6350 switch (elfNN_aarch64_bfd_reloc_from_type (input_bfd
, r_type
))
6352 case BFD_RELOC_AARCH64_TLSDESC_ADR_PAGE21
:
6353 case BFD_RELOC_AARCH64_TLSGD_ADR_PAGE21
:
6356 /* GD->LE relaxation:
6357 adrp x0, :tlsgd:var => movz R0, :tprel_g1:var
6359 adrp x0, :tlsdesc:var => movz R0, :tprel_g1:var
6361 Where R is x for LP64, and w for ILP32. */
6362 bfd_putl32 (movz_R0
, contents
+ rel
->r_offset
);
6363 /* We have relaxed the adrp into a mov, we may have to clear any
6364 pending erratum fixes. */
6365 clear_erratum_843419_entry (globals
, rel
->r_offset
, input_section
);
6366 return bfd_reloc_continue
;
6370 /* GD->IE relaxation:
6371 adrp x0, :tlsgd:var => adrp x0, :gottprel:var
6373 adrp x0, :tlsdesc:var => adrp x0, :gottprel:var
6375 return bfd_reloc_continue
;
6378 case BFD_RELOC_AARCH64_TLSDESC_ADR_PREL21
:
6382 case BFD_RELOC_AARCH64_TLSDESC_LD_PREL19
:
6385 /* Tiny TLSDESC->LE relaxation:
6386 ldr x1, :tlsdesc:var => movz R0, #:tprel_g1:var
6387 adr x0, :tlsdesc:var => movk R0, #:tprel_g0_nc:var
6391 Where R is x for LP64, and w for ILP32. */
6392 BFD_ASSERT (ELFNN_R_TYPE (rel
[1].r_info
) == AARCH64_R (TLSDESC_ADR_PREL21
));
6393 BFD_ASSERT (ELFNN_R_TYPE (rel
[2].r_info
) == AARCH64_R (TLSDESC_CALL
));
6395 rel
[1].r_info
= ELFNN_R_INFO (ELFNN_R_SYM (rel
->r_info
),
6396 AARCH64_R (TLSLE_MOVW_TPREL_G0_NC
));
6397 rel
[2].r_info
= ELFNN_R_INFO (STN_UNDEF
, R_AARCH64_NONE
);
6399 bfd_putl32 (movz_R0
, contents
+ rel
->r_offset
);
6400 bfd_putl32 (movk_R0
, contents
+ rel
->r_offset
+ 4);
6401 bfd_putl32 (INSN_NOP
, contents
+ rel
->r_offset
+ 8);
6402 return bfd_reloc_continue
;
6406 /* Tiny TLSDESC->IE relaxation:
6407 ldr x1, :tlsdesc:var => ldr x0, :gottprel:var
6408 adr x0, :tlsdesc:var => nop
6412 BFD_ASSERT (ELFNN_R_TYPE (rel
[1].r_info
) == AARCH64_R (TLSDESC_ADR_PREL21
));
6413 BFD_ASSERT (ELFNN_R_TYPE (rel
[2].r_info
) == AARCH64_R (TLSDESC_CALL
));
6415 rel
[1].r_info
= ELFNN_R_INFO (STN_UNDEF
, R_AARCH64_NONE
);
6416 rel
[2].r_info
= ELFNN_R_INFO (STN_UNDEF
, R_AARCH64_NONE
);
6418 bfd_putl32 (ldr_R0
, contents
+ rel
->r_offset
);
6419 bfd_putl32 (INSN_NOP
, contents
+ rel
->r_offset
+ 4);
6420 bfd_putl32 (INSN_NOP
, contents
+ rel
->r_offset
+ 8);
6421 return bfd_reloc_continue
;
6424 case BFD_RELOC_AARCH64_TLSGD_ADR_PREL21
:
6427 /* Tiny GD->LE relaxation:
6428 adr x0, :tlsgd:var => mrs x1, tpidr_el0
6429 bl __tls_get_addr => add R0, R1, #:tprel_hi12:x, lsl #12
6430 nop => add R0, R0, #:tprel_lo12_nc:x
6432 Where R is x for LP64, and x for Ilp32. */
6434 /* First kill the tls_get_addr reloc on the bl instruction. */
6435 BFD_ASSERT (rel
->r_offset
+ 4 == rel
[1].r_offset
);
6437 bfd_putl32 (0xd53bd041, contents
+ rel
->r_offset
+ 0);
6438 bfd_putl32 (add_R0_R1
, contents
+ rel
->r_offset
+ 4);
6439 bfd_putl32 (add_R0_R0
, contents
+ rel
->r_offset
+ 8);
6441 rel
[1].r_info
= ELFNN_R_INFO (ELFNN_R_SYM (rel
->r_info
),
6442 AARCH64_R (TLSLE_ADD_TPREL_LO12_NC
));
6443 rel
[1].r_offset
= rel
->r_offset
+ 8;
6445 /* Move the current relocation to the second instruction in
6448 rel
->r_info
= ELFNN_R_INFO (ELFNN_R_SYM (rel
->r_info
),
6449 AARCH64_R (TLSLE_ADD_TPREL_HI12
));
6450 return bfd_reloc_continue
;
6454 /* Tiny GD->IE relaxation:
6455 adr x0, :tlsgd:var => ldr R0, :gottprel:var
6456 bl __tls_get_addr => mrs x1, tpidr_el0
6457 nop => add R0, R0, R1
6459 Where R is x for LP64, and w for Ilp32. */
6461 /* First kill the tls_get_addr reloc on the bl instruction. */
6462 BFD_ASSERT (rel
->r_offset
+ 4 == rel
[1].r_offset
);
6463 rel
[1].r_info
= ELFNN_R_INFO (STN_UNDEF
, R_AARCH64_NONE
);
6465 bfd_putl32 (ldr_R0
, contents
+ rel
->r_offset
);
6466 bfd_putl32 (0xd53bd041, contents
+ rel
->r_offset
+ 4);
6467 bfd_putl32 (add_R0_R0_R1
, contents
+ rel
->r_offset
+ 8);
6468 return bfd_reloc_continue
;
6472 case BFD_RELOC_AARCH64_TLSGD_MOVW_G1
:
6473 BFD_ASSERT (ELFNN_R_TYPE (rel
[1].r_info
) == AARCH64_R (TLSGD_MOVW_G0_NC
));
6474 BFD_ASSERT (rel
->r_offset
+ 12 == rel
[2].r_offset
);
6475 BFD_ASSERT (ELFNN_R_TYPE (rel
[2].r_info
) == AARCH64_R (CALL26
));
6479 /* Large GD->LE relaxation:
6480 movz x0, #:tlsgd_g1:var => movz x0, #:tprel_g2:var, lsl #32
6481 movk x0, #:tlsgd_g0_nc:var => movk x0, #:tprel_g1_nc:var, lsl #16
6482 add x0, gp, x0 => movk x0, #:tprel_g0_nc:var
6483 bl __tls_get_addr => mrs x1, tpidr_el0
6484 nop => add x0, x0, x1
6486 rel
[2].r_info
= ELFNN_R_INFO (ELFNN_R_SYM (rel
->r_info
),
6487 AARCH64_R (TLSLE_MOVW_TPREL_G0_NC
));
6488 rel
[2].r_offset
= rel
->r_offset
+ 8;
6490 bfd_putl32 (movz_hw_R0
, contents
+ rel
->r_offset
+ 0);
6491 bfd_putl32 (ldr_hw_R0
, contents
+ rel
->r_offset
+ 4);
6492 bfd_putl32 (movk_R0
, contents
+ rel
->r_offset
+ 8);
6493 bfd_putl32 (0xd53bd041, contents
+ rel
->r_offset
+ 12);
6494 bfd_putl32 (add_R0_R0_R1
, contents
+ rel
->r_offset
+ 16);
6498 /* Large GD->IE relaxation:
6499 movz x0, #:tlsgd_g1:var => movz x0, #:gottprel_g1:var, lsl #16
6500 movk x0, #:tlsgd_g0_nc:var => movk x0, #:gottprel_g0_nc:var
6501 add x0, gp, x0 => ldr x0, [gp, x0]
6502 bl __tls_get_addr => mrs x1, tpidr_el0
6503 nop => add x0, x0, x1
6505 rel
[2].r_info
= ELFNN_R_INFO (STN_UNDEF
, R_AARCH64_NONE
);
6506 bfd_putl32 (0xd2a80000, contents
+ rel
->r_offset
+ 0);
6507 bfd_putl32 (ldr_R0
, contents
+ rel
->r_offset
+ 8);
6508 bfd_putl32 (0xd53bd041, contents
+ rel
->r_offset
+ 12);
6509 bfd_putl32 (add_R0_R0_R1
, contents
+ rel
->r_offset
+ 16);
6511 return bfd_reloc_continue
;
6513 case BFD_RELOC_AARCH64_TLSGD_MOVW_G0_NC
:
6514 return bfd_reloc_continue
;
6517 case BFD_RELOC_AARCH64_TLSIE_LD_GOTTPREL_PREL19
:
6518 return bfd_reloc_continue
;
6520 case BFD_RELOC_AARCH64_TLSDESC_LDNN_LO12_NC
:
6523 /* GD->LE relaxation:
6524 ldr xd, [x0, #:tlsdesc_lo12:var] => movk x0, :tprel_g0_nc:var
6526 Where R is x for lp64 mode, and w for ILP32 mode. */
6527 bfd_putl32 (movk_R0
, contents
+ rel
->r_offset
);
6528 return bfd_reloc_continue
;
6532 /* GD->IE relaxation:
6533 ldr xd, [x0, #:tlsdesc_lo12:var] => ldr R0, [x0, #:gottprel_lo12:var]
6535 Where R is x for lp64 mode, and w for ILP32 mode. */
6536 insn
= bfd_getl32 (contents
+ rel
->r_offset
);
6537 bfd_putl32 (ldr_R0_mask (insn
), contents
+ rel
->r_offset
);
6538 return bfd_reloc_continue
;
6541 case BFD_RELOC_AARCH64_TLSGD_ADD_LO12_NC
:
6544 /* GD->LE relaxation
6545 add x0, #:tlsgd_lo12:var => movk R0, :tprel_g0_nc:var
6546 bl __tls_get_addr => mrs x1, tpidr_el0
6547 nop => add R0, R1, R0
6549 Where R is x for lp64 mode, and w for ILP32 mode. */
6551 /* First kill the tls_get_addr reloc on the bl instruction. */
6552 BFD_ASSERT (rel
->r_offset
+ 4 == rel
[1].r_offset
);
6553 rel
[1].r_info
= ELFNN_R_INFO (STN_UNDEF
, R_AARCH64_NONE
);
6555 bfd_putl32 (movk_R0
, contents
+ rel
->r_offset
);
6556 bfd_putl32 (0xd53bd041, contents
+ rel
->r_offset
+ 4);
6557 bfd_putl32 (add_R0_R0_R1
, contents
+ rel
->r_offset
+ 8);
6558 return bfd_reloc_continue
;
6562 /* GD->IE relaxation
6563 ADD x0, #:tlsgd_lo12:var => ldr R0, [x0, #:gottprel_lo12:var]
6564 BL __tls_get_addr => mrs x1, tpidr_el0
6566 NOP => add R0, R1, R0
6568 Where R is x for lp64 mode, and w for ilp32 mode. */
6570 BFD_ASSERT (ELFNN_R_TYPE (rel
[1].r_info
) == AARCH64_R (CALL26
));
6572 /* Remove the relocation on the BL instruction. */
6573 rel
[1].r_info
= ELFNN_R_INFO (STN_UNDEF
, R_AARCH64_NONE
);
6575 /* We choose to fixup the BL and NOP instructions using the
6576 offset from the second relocation to allow flexibility in
6577 scheduling instructions between the ADD and BL. */
6578 bfd_putl32 (ldr_R0_x0
, contents
+ rel
->r_offset
);
6579 bfd_putl32 (0xd53bd041, contents
+ rel
[1].r_offset
);
6580 bfd_putl32 (add_R0_R0_R1
, contents
+ rel
[1].r_offset
+ 4);
6581 return bfd_reloc_continue
;
6584 case BFD_RELOC_AARCH64_TLSDESC_ADD
:
6585 case BFD_RELOC_AARCH64_TLSDESC_ADD_LO12
:
6586 case BFD_RELOC_AARCH64_TLSDESC_CALL
:
6587 /* GD->IE/LE relaxation:
6588 add x0, x0, #:tlsdesc_lo12:var => nop
6591 bfd_putl32 (INSN_NOP
, contents
+ rel
->r_offset
);
6592 return bfd_reloc_ok
;
6594 case BFD_RELOC_AARCH64_TLSDESC_LDR
:
6597 /* GD->LE relaxation:
6598 ldr xd, [gp, xn] => movk R0, #:tprel_g0_nc:var
6600 Where R is x for lp64 mode, and w for ILP32 mode. */
6601 bfd_putl32 (movk_R0
, contents
+ rel
->r_offset
);
6602 return bfd_reloc_continue
;
6606 /* GD->IE relaxation:
6607 ldr xd, [gp, xn] => ldr R0, [gp, xn]
6609 Where R is x for lp64 mode, and w for ILP32 mode. */
6610 insn
= bfd_getl32 (contents
+ rel
->r_offset
);
6611 bfd_putl32 (ldr_R0_mask (insn
), contents
+ rel
->r_offset
);
6612 return bfd_reloc_ok
;
6615 case BFD_RELOC_AARCH64_TLSDESC_OFF_G0_NC
:
6616 /* GD->LE relaxation:
6617 movk xd, #:tlsdesc_off_g0_nc:var => movk R0, #:tprel_g1_nc:var, lsl #16
6619 movk xd, #:tlsdesc_off_g0_nc:var => movk Rd, #:gottprel_g0_nc:var
6621 Where R is x for lp64 mode, and w for ILP32 mode. */
6623 bfd_putl32 (ldr_hw_R0
, contents
+ rel
->r_offset
);
6624 return bfd_reloc_continue
;
6626 case BFD_RELOC_AARCH64_TLSDESC_OFF_G1
:
6629 /* GD->LE relaxation:
6630 movz xd, #:tlsdesc_off_g1:var => movz R0, #:tprel_g2:var, lsl #32
6632 Where R is x for lp64 mode, and w for ILP32 mode. */
6633 bfd_putl32 (movz_hw_R0
, contents
+ rel
->r_offset
);
6634 return bfd_reloc_continue
;
6638 /* GD->IE relaxation:
6639 movz xd, #:tlsdesc_off_g1:var => movz Rd, #:gottprel_g1:var, lsl #16
6641 Where R is x for lp64 mode, and w for ILP32 mode. */
6642 insn
= bfd_getl32 (contents
+ rel
->r_offset
);
6643 bfd_putl32 (movz_R0
| (insn
& 0x1f), contents
+ rel
->r_offset
);
6644 return bfd_reloc_continue
;
6647 case BFD_RELOC_AARCH64_TLSIE_ADR_GOTTPREL_PAGE21
:
6648 /* IE->LE relaxation:
6649 adrp xd, :gottprel:var => movz Rd, :tprel_g1:var
6651 Where R is x for lp64 mode, and w for ILP32 mode. */
6654 insn
= bfd_getl32 (contents
+ rel
->r_offset
);
6655 bfd_putl32 (movz_R0
| (insn
& 0x1f), contents
+ rel
->r_offset
);
6656 /* We have relaxed the adrp into a mov, we may have to clear any
6657 pending erratum fixes. */
6658 clear_erratum_843419_entry (globals
, rel
->r_offset
, input_section
);
6660 return bfd_reloc_continue
;
6662 case BFD_RELOC_AARCH64_TLSIE_LDNN_GOTTPREL_LO12_NC
:
6663 /* IE->LE relaxation:
6664 ldr xd, [xm, #:gottprel_lo12:var] => movk Rd, :tprel_g0_nc:var
6666 Where R is x for lp64 mode, and w for ILP32 mode. */
6669 insn
= bfd_getl32 (contents
+ rel
->r_offset
);
6670 bfd_putl32 (movk_R0
| (insn
& 0x1f), contents
+ rel
->r_offset
);
6672 return bfd_reloc_continue
;
6674 case BFD_RELOC_AARCH64_TLSLD_ADR_PREL21
:
6675 /* LD->LE relaxation (tiny):
6676 adr x0, :tlsldm:x => mrs x0, tpidr_el0
6677 bl __tls_get_addr => add R0, R0, TCB_SIZE
6679 Where R is x for lp64 mode, and w for ilp32 mode. */
6682 BFD_ASSERT (rel
->r_offset
+ 4 == rel
[1].r_offset
);
6683 BFD_ASSERT (ELFNN_R_TYPE (rel
[1].r_info
) == AARCH64_R (CALL26
));
6684 /* No need of CALL26 relocation for tls_get_addr. */
6685 rel
[1].r_info
= ELFNN_R_INFO (STN_UNDEF
, R_AARCH64_NONE
);
6686 bfd_putl32 (0xd53bd040, contents
+ rel
->r_offset
+ 0);
6687 bfd_putl32 (add_R0_R0
| (TCB_SIZE
<< 10),
6688 contents
+ rel
->r_offset
+ 4);
6689 return bfd_reloc_ok
;
6691 return bfd_reloc_continue
;
6693 case BFD_RELOC_AARCH64_TLSLD_ADR_PAGE21
:
6694 /* LD->LE relaxation (small):
6695 adrp x0, :tlsldm:x => mrs x0, tpidr_el0
6699 bfd_putl32 (0xd53bd040, contents
+ rel
->r_offset
);
6700 return bfd_reloc_ok
;
6702 return bfd_reloc_continue
;
6704 case BFD_RELOC_AARCH64_TLSLD_ADD_LO12_NC
:
6705 /* LD->LE relaxation (small):
6706 add x0, #:tlsldm_lo12:x => add R0, R0, TCB_SIZE
6707 bl __tls_get_addr => nop
6709 Where R is x for lp64 mode, and w for ilp32 mode. */
6712 BFD_ASSERT (rel
->r_offset
+ 4 == rel
[1].r_offset
);
6713 BFD_ASSERT (ELFNN_R_TYPE (rel
[1].r_info
) == AARCH64_R (CALL26
));
6714 /* No need of CALL26 relocation for tls_get_addr. */
6715 rel
[1].r_info
= ELFNN_R_INFO (STN_UNDEF
, R_AARCH64_NONE
);
6716 bfd_putl32 (add_R0_R0
| (TCB_SIZE
<< 10),
6717 contents
+ rel
->r_offset
+ 0);
6718 bfd_putl32 (INSN_NOP
, contents
+ rel
->r_offset
+ 4);
6719 return bfd_reloc_ok
;
6721 return bfd_reloc_continue
;
6724 return bfd_reloc_continue
;
6727 return bfd_reloc_ok
;
6730 /* Relocate an AArch64 ELF section. */
6733 elfNN_aarch64_relocate_section (bfd
*output_bfd
,
6734 struct bfd_link_info
*info
,
6736 asection
*input_section
,
6738 Elf_Internal_Rela
*relocs
,
6739 Elf_Internal_Sym
*local_syms
,
6740 asection
**local_sections
)
6742 Elf_Internal_Shdr
*symtab_hdr
;
6743 struct elf_link_hash_entry
**sym_hashes
;
6744 Elf_Internal_Rela
*rel
;
6745 Elf_Internal_Rela
*relend
;
6747 struct elf_aarch64_link_hash_table
*globals
;
6748 bfd_boolean save_addend
= FALSE
;
6751 globals
= elf_aarch64_hash_table (info
);
6753 symtab_hdr
= &elf_symtab_hdr (input_bfd
);
6754 sym_hashes
= elf_sym_hashes (input_bfd
);
6757 relend
= relocs
+ input_section
->reloc_count
;
6758 for (; rel
< relend
; rel
++)
6760 unsigned int r_type
;
6761 bfd_reloc_code_real_type bfd_r_type
;
6762 bfd_reloc_code_real_type relaxed_bfd_r_type
;
6763 reloc_howto_type
*howto
;
6764 unsigned long r_symndx
;
6765 Elf_Internal_Sym
*sym
;
6767 struct elf_link_hash_entry
*h
;
6769 bfd_reloc_status_type r
;
6772 bfd_boolean unresolved_reloc
= FALSE
;
6773 char *error_message
= NULL
;
6775 r_symndx
= ELFNN_R_SYM (rel
->r_info
);
6776 r_type
= ELFNN_R_TYPE (rel
->r_info
);
6778 bfd_reloc
.howto
= elfNN_aarch64_howto_from_type (input_bfd
, r_type
);
6779 howto
= bfd_reloc
.howto
;
6782 return _bfd_unrecognized_reloc (input_bfd
, input_section
, r_type
);
6784 bfd_r_type
= elfNN_aarch64_bfd_reloc_from_howto (howto
);
6790 if (r_symndx
< symtab_hdr
->sh_info
)
6792 sym
= local_syms
+ r_symndx
;
6793 sym_type
= ELFNN_ST_TYPE (sym
->st_info
);
6794 sec
= local_sections
[r_symndx
];
6796 /* An object file might have a reference to a local
6797 undefined symbol. This is a daft object file, but we
6798 should at least do something about it. */
6799 if (r_type
!= R_AARCH64_NONE
&& r_type
!= R_AARCH64_NULL
6800 && bfd_is_und_section (sec
)
6801 && ELF_ST_BIND (sym
->st_info
) != STB_WEAK
)
6802 (*info
->callbacks
->undefined_symbol
)
6803 (info
, bfd_elf_string_from_elf_section
6804 (input_bfd
, symtab_hdr
->sh_link
, sym
->st_name
),
6805 input_bfd
, input_section
, rel
->r_offset
, TRUE
);
6807 relocation
= _bfd_elf_rela_local_sym (output_bfd
, sym
, &sec
, rel
);
6809 /* Relocate against local STT_GNU_IFUNC symbol. */
6810 if (!bfd_link_relocatable (info
)
6811 && ELF_ST_TYPE (sym
->st_info
) == STT_GNU_IFUNC
)
6813 h
= elfNN_aarch64_get_local_sym_hash (globals
, input_bfd
,
6818 /* Set STT_GNU_IFUNC symbol value. */
6819 h
->root
.u
.def
.value
= sym
->st_value
;
6820 h
->root
.u
.def
.section
= sec
;
6825 bfd_boolean warned
, ignored
;
6827 RELOC_FOR_GLOBAL_SYMBOL (info
, input_bfd
, input_section
, rel
,
6828 r_symndx
, symtab_hdr
, sym_hashes
,
6830 unresolved_reloc
, warned
, ignored
);
6835 if (sec
!= NULL
&& discarded_section (sec
))
6836 RELOC_AGAINST_DISCARDED_SECTION (info
, input_bfd
, input_section
,
6837 rel
, 1, relend
, howto
, 0, contents
);
6839 if (bfd_link_relocatable (info
))
6843 name
= h
->root
.root
.string
;
6846 name
= (bfd_elf_string_from_elf_section
6847 (input_bfd
, symtab_hdr
->sh_link
, sym
->st_name
));
6848 if (name
== NULL
|| *name
== '\0')
6849 name
= bfd_section_name (sec
);
6853 && r_type
!= R_AARCH64_NONE
6854 && r_type
!= R_AARCH64_NULL
6856 || h
->root
.type
== bfd_link_hash_defined
6857 || h
->root
.type
== bfd_link_hash_defweak
)
6858 && IS_AARCH64_TLS_RELOC (bfd_r_type
) != (sym_type
== STT_TLS
))
6861 ((sym_type
== STT_TLS
6862 /* xgettext:c-format */
6863 ? _("%pB(%pA+%#" PRIx64
"): %s used with TLS symbol %s")
6864 /* xgettext:c-format */
6865 : _("%pB(%pA+%#" PRIx64
"): %s used with non-TLS symbol %s")),
6867 input_section
, (uint64_t) rel
->r_offset
, howto
->name
, name
);
6870 /* We relax only if we can see that there can be a valid transition
6871 from a reloc type to another.
6872 We call elfNN_aarch64_final_link_relocate unless we're completely
6873 done, i.e., the relaxation produced the final output we want. */
6875 relaxed_bfd_r_type
= aarch64_tls_transition (input_bfd
, info
, r_type
,
6877 if (relaxed_bfd_r_type
!= bfd_r_type
)
6879 bfd_r_type
= relaxed_bfd_r_type
;
6880 howto
= elfNN_aarch64_howto_from_bfd_reloc (bfd_r_type
);
6881 BFD_ASSERT (howto
!= NULL
);
6882 r_type
= howto
->type
;
6883 r
= elfNN_aarch64_tls_relax (globals
, input_bfd
, input_section
,
6885 unresolved_reloc
= 0;
6888 r
= bfd_reloc_continue
;
6890 /* There may be multiple consecutive relocations for the
6891 same offset. In that case we are supposed to treat the
6892 output of each relocation as the addend for the next. */
6893 if (rel
+ 1 < relend
6894 && rel
->r_offset
== rel
[1].r_offset
6895 && ELFNN_R_TYPE (rel
[1].r_info
) != R_AARCH64_NONE
6896 && ELFNN_R_TYPE (rel
[1].r_info
) != R_AARCH64_NULL
)
6899 save_addend
= FALSE
;
6901 if (r
== bfd_reloc_continue
)
6902 r
= elfNN_aarch64_final_link_relocate (howto
, input_bfd
, output_bfd
,
6903 input_section
, contents
, rel
,
6904 relocation
, info
, sec
,
6905 h
, &unresolved_reloc
,
6906 save_addend
, &addend
, sym
);
6908 switch (elfNN_aarch64_bfd_reloc_from_type (input_bfd
, r_type
))
6910 case BFD_RELOC_AARCH64_TLSGD_ADD_LO12_NC
:
6911 case BFD_RELOC_AARCH64_TLSGD_ADR_PAGE21
:
6912 case BFD_RELOC_AARCH64_TLSGD_ADR_PREL21
:
6913 case BFD_RELOC_AARCH64_TLSGD_MOVW_G0_NC
:
6914 case BFD_RELOC_AARCH64_TLSGD_MOVW_G1
:
6915 case BFD_RELOC_AARCH64_TLSLD_ADD_LO12_NC
:
6916 case BFD_RELOC_AARCH64_TLSLD_ADR_PAGE21
:
6917 case BFD_RELOC_AARCH64_TLSLD_ADR_PREL21
:
6918 if (! symbol_got_offset_mark_p (input_bfd
, h
, r_symndx
))
6920 bfd_boolean need_relocs
= FALSE
;
6925 off
= symbol_got_offset (input_bfd
, h
, r_symndx
);
6926 indx
= h
&& h
->dynindx
!= -1 ? h
->dynindx
: 0;
6929 (!bfd_link_executable (info
) || indx
!= 0) &&
6931 || ELF_ST_VISIBILITY (h
->other
) == STV_DEFAULT
6932 || h
->root
.type
!= bfd_link_hash_undefweak
);
6934 BFD_ASSERT (globals
->root
.srelgot
!= NULL
);
6938 Elf_Internal_Rela rela
;
6939 rela
.r_info
= ELFNN_R_INFO (indx
, AARCH64_R (TLS_DTPMOD
));
6941 rela
.r_offset
= globals
->root
.sgot
->output_section
->vma
+
6942 globals
->root
.sgot
->output_offset
+ off
;
6945 loc
= globals
->root
.srelgot
->contents
;
6946 loc
+= globals
->root
.srelgot
->reloc_count
++
6947 * RELOC_SIZE (htab
);
6948 bfd_elfNN_swap_reloca_out (output_bfd
, &rela
, loc
);
6950 bfd_reloc_code_real_type real_type
=
6951 elfNN_aarch64_bfd_reloc_from_type (input_bfd
, r_type
);
6953 if (real_type
== BFD_RELOC_AARCH64_TLSLD_ADR_PREL21
6954 || real_type
== BFD_RELOC_AARCH64_TLSLD_ADR_PAGE21
6955 || real_type
== BFD_RELOC_AARCH64_TLSLD_ADD_LO12_NC
)
6957 /* For local dynamic, don't generate DTPREL in any case.
6958 Initialize the DTPREL slot into zero, so we get module
6959 base address when invoke runtime TLS resolver. */
6960 bfd_put_NN (output_bfd
, 0,
6961 globals
->root
.sgot
->contents
+ off
6966 bfd_put_NN (output_bfd
,
6967 relocation
- dtpoff_base (info
),
6968 globals
->root
.sgot
->contents
+ off
6973 /* This TLS symbol is global. We emit a
6974 relocation to fixup the tls offset at load
6977 ELFNN_R_INFO (indx
, AARCH64_R (TLS_DTPREL
));
6980 (globals
->root
.sgot
->output_section
->vma
6981 + globals
->root
.sgot
->output_offset
+ off
6984 loc
= globals
->root
.srelgot
->contents
;
6985 loc
+= globals
->root
.srelgot
->reloc_count
++
6986 * RELOC_SIZE (globals
);
6987 bfd_elfNN_swap_reloca_out (output_bfd
, &rela
, loc
);
6988 bfd_put_NN (output_bfd
, (bfd_vma
) 0,
6989 globals
->root
.sgot
->contents
+ off
6995 bfd_put_NN (output_bfd
, (bfd_vma
) 1,
6996 globals
->root
.sgot
->contents
+ off
);
6997 bfd_put_NN (output_bfd
,
6998 relocation
- dtpoff_base (info
),
6999 globals
->root
.sgot
->contents
+ off
7003 symbol_got_offset_mark (input_bfd
, h
, r_symndx
);
7007 case BFD_RELOC_AARCH64_TLSIE_ADR_GOTTPREL_PAGE21
:
7008 case BFD_RELOC_AARCH64_TLSIE_LDNN_GOTTPREL_LO12_NC
:
7009 case BFD_RELOC_AARCH64_TLSIE_LD_GOTTPREL_PREL19
:
7010 case BFD_RELOC_AARCH64_TLSIE_MOVW_GOTTPREL_G0_NC
:
7011 case BFD_RELOC_AARCH64_TLSIE_MOVW_GOTTPREL_G1
:
7012 if (! symbol_got_offset_mark_p (input_bfd
, h
, r_symndx
))
7014 bfd_boolean need_relocs
= FALSE
;
7019 off
= symbol_got_offset (input_bfd
, h
, r_symndx
);
7021 indx
= h
&& h
->dynindx
!= -1 ? h
->dynindx
: 0;
7024 (!bfd_link_executable (info
) || indx
!= 0) &&
7026 || ELF_ST_VISIBILITY (h
->other
) == STV_DEFAULT
7027 || h
->root
.type
!= bfd_link_hash_undefweak
);
7029 BFD_ASSERT (globals
->root
.srelgot
!= NULL
);
7033 Elf_Internal_Rela rela
;
7036 rela
.r_addend
= relocation
- dtpoff_base (info
);
7040 rela
.r_info
= ELFNN_R_INFO (indx
, AARCH64_R (TLS_TPREL
));
7041 rela
.r_offset
= globals
->root
.sgot
->output_section
->vma
+
7042 globals
->root
.sgot
->output_offset
+ off
;
7044 loc
= globals
->root
.srelgot
->contents
;
7045 loc
+= globals
->root
.srelgot
->reloc_count
++
7046 * RELOC_SIZE (htab
);
7048 bfd_elfNN_swap_reloca_out (output_bfd
, &rela
, loc
);
7050 bfd_put_NN (output_bfd
, rela
.r_addend
,
7051 globals
->root
.sgot
->contents
+ off
);
7054 bfd_put_NN (output_bfd
, relocation
- tpoff_base (info
),
7055 globals
->root
.sgot
->contents
+ off
);
7057 symbol_got_offset_mark (input_bfd
, h
, r_symndx
);
7061 case BFD_RELOC_AARCH64_TLSDESC_ADD_LO12
:
7062 case BFD_RELOC_AARCH64_TLSDESC_ADR_PAGE21
:
7063 case BFD_RELOC_AARCH64_TLSDESC_ADR_PREL21
:
7064 case BFD_RELOC_AARCH64_TLSDESC_LDNN_LO12_NC
:
7065 case BFD_RELOC_AARCH64_TLSDESC_LD_PREL19
:
7066 case BFD_RELOC_AARCH64_TLSDESC_OFF_G0_NC
:
7067 case BFD_RELOC_AARCH64_TLSDESC_OFF_G1
:
7068 if (! symbol_tlsdesc_got_offset_mark_p (input_bfd
, h
, r_symndx
))
7070 bfd_boolean need_relocs
= FALSE
;
7071 int indx
= h
&& h
->dynindx
!= -1 ? h
->dynindx
: 0;
7072 bfd_vma off
= symbol_tlsdesc_got_offset (input_bfd
, h
, r_symndx
);
7074 need_relocs
= (h
== NULL
7075 || ELF_ST_VISIBILITY (h
->other
) == STV_DEFAULT
7076 || h
->root
.type
!= bfd_link_hash_undefweak
);
7078 BFD_ASSERT (globals
->root
.srelgot
!= NULL
);
7079 BFD_ASSERT (globals
->root
.sgot
!= NULL
);
7084 Elf_Internal_Rela rela
;
7085 rela
.r_info
= ELFNN_R_INFO (indx
, AARCH64_R (TLSDESC
));
7088 rela
.r_offset
= (globals
->root
.sgotplt
->output_section
->vma
7089 + globals
->root
.sgotplt
->output_offset
7090 + off
+ globals
->sgotplt_jump_table_size
);
7093 rela
.r_addend
= relocation
- dtpoff_base (info
);
7095 /* Allocate the next available slot in the PLT reloc
7096 section to hold our R_AARCH64_TLSDESC, the next
7097 available slot is determined from reloc_count,
7098 which we step. But note, reloc_count was
7099 artifically moved down while allocating slots for
7100 real PLT relocs such that all of the PLT relocs
7101 will fit above the initial reloc_count and the
7102 extra stuff will fit below. */
7103 loc
= globals
->root
.srelplt
->contents
;
7104 loc
+= globals
->root
.srelplt
->reloc_count
++
7105 * RELOC_SIZE (globals
);
7107 bfd_elfNN_swap_reloca_out (output_bfd
, &rela
, loc
);
7109 bfd_put_NN (output_bfd
, (bfd_vma
) 0,
7110 globals
->root
.sgotplt
->contents
+ off
+
7111 globals
->sgotplt_jump_table_size
);
7112 bfd_put_NN (output_bfd
, (bfd_vma
) 0,
7113 globals
->root
.sgotplt
->contents
+ off
+
7114 globals
->sgotplt_jump_table_size
+
7118 symbol_tlsdesc_got_offset_mark (input_bfd
, h
, r_symndx
);
7125 /* Dynamic relocs are not propagated for SEC_DEBUGGING sections
7126 because such sections are not SEC_ALLOC and thus ld.so will
7127 not process them. */
7128 if (unresolved_reloc
7129 && !((input_section
->flags
& SEC_DEBUGGING
) != 0
7131 && _bfd_elf_section_offset (output_bfd
, info
, input_section
,
7132 +rel
->r_offset
) != (bfd_vma
) - 1)
7135 /* xgettext:c-format */
7136 (_("%pB(%pA+%#" PRIx64
"): "
7137 "unresolvable %s relocation against symbol `%s'"),
7138 input_bfd
, input_section
, (uint64_t) rel
->r_offset
, howto
->name
,
7139 h
->root
.root
.string
);
7143 if (r
!= bfd_reloc_ok
&& r
!= bfd_reloc_continue
)
7145 bfd_reloc_code_real_type real_r_type
7146 = elfNN_aarch64_bfd_reloc_from_type (input_bfd
, r_type
);
7150 case bfd_reloc_overflow
:
7151 (*info
->callbacks
->reloc_overflow
)
7152 (info
, (h
? &h
->root
: NULL
), name
, howto
->name
, (bfd_vma
) 0,
7153 input_bfd
, input_section
, rel
->r_offset
);
7154 if (real_r_type
== BFD_RELOC_AARCH64_LD64_GOTPAGE_LO15
7155 || real_r_type
== BFD_RELOC_AARCH64_LD32_GOTPAGE_LO14
)
7157 (*info
->callbacks
->warning
)
7159 _("too many GOT entries for -fpic, "
7160 "please recompile with -fPIC"),
7161 name
, input_bfd
, input_section
, rel
->r_offset
);
7164 /* Overflow can occur when a variable is referenced with a type
7165 that has a larger alignment than the type with which it was
7167 file1.c: extern int foo; int a (void) { return foo; }
7168 file2.c: char bar, foo, baz;
7169 If the variable is placed into a data section at an offset
7170 that is incompatible with the larger alignment requirement
7171 overflow will occur. (Strictly speaking this is not overflow
7172 but rather an alignment problem, but the bfd_reloc_ error
7173 enum does not have a value to cover that situation).
7175 Try to catch this situation here and provide a more helpful
7176 error message to the user. */
7177 if (addend
& ((1 << howto
->rightshift
) - 1)
7178 /* FIXME: Are we testing all of the appropriate reloc
7180 && (real_r_type
== BFD_RELOC_AARCH64_LD_LO19_PCREL
7181 || real_r_type
== BFD_RELOC_AARCH64_LDST16_LO12
7182 || real_r_type
== BFD_RELOC_AARCH64_LDST32_LO12
7183 || real_r_type
== BFD_RELOC_AARCH64_LDST64_LO12
7184 || real_r_type
== BFD_RELOC_AARCH64_LDST128_LO12
))
7186 info
->callbacks
->warning
7187 (info
, _("one possible cause of this error is that the \
7188 symbol is being referenced in the indicated code as if it had a larger \
7189 alignment than was declared where it was defined"),
7190 name
, input_bfd
, input_section
, rel
->r_offset
);
7194 case bfd_reloc_undefined
:
7195 (*info
->callbacks
->undefined_symbol
)
7196 (info
, name
, input_bfd
, input_section
, rel
->r_offset
, TRUE
);
7199 case bfd_reloc_outofrange
:
7200 error_message
= _("out of range");
7203 case bfd_reloc_notsupported
:
7204 error_message
= _("unsupported relocation");
7207 case bfd_reloc_dangerous
:
7208 /* error_message should already be set. */
7212 error_message
= _("unknown error");
7216 BFD_ASSERT (error_message
!= NULL
);
7217 (*info
->callbacks
->reloc_dangerous
)
7218 (info
, error_message
, input_bfd
, input_section
, rel
->r_offset
);
7230 /* Set the right machine number. */
7233 elfNN_aarch64_object_p (bfd
*abfd
)
7236 bfd_default_set_arch_mach (abfd
, bfd_arch_aarch64
, bfd_mach_aarch64_ilp32
);
7238 bfd_default_set_arch_mach (abfd
, bfd_arch_aarch64
, bfd_mach_aarch64
);
7243 /* Function to keep AArch64 specific flags in the ELF header. */
7246 elfNN_aarch64_set_private_flags (bfd
*abfd
, flagword flags
)
7248 if (elf_flags_init (abfd
) && elf_elfheader (abfd
)->e_flags
!= flags
)
7253 elf_elfheader (abfd
)->e_flags
= flags
;
7254 elf_flags_init (abfd
) = TRUE
;
7260 /* Merge backend specific data from an object file to the output
7261 object file when linking. */
7264 elfNN_aarch64_merge_private_bfd_data (bfd
*ibfd
, struct bfd_link_info
*info
)
7266 bfd
*obfd
= info
->output_bfd
;
7269 bfd_boolean flags_compatible
= TRUE
;
7272 /* Check if we have the same endianess. */
7273 if (!_bfd_generic_verify_endian_match (ibfd
, info
))
7276 if (!is_aarch64_elf (ibfd
) || !is_aarch64_elf (obfd
))
7279 /* The input BFD must have had its flags initialised. */
7280 /* The following seems bogus to me -- The flags are initialized in
7281 the assembler but I don't think an elf_flags_init field is
7282 written into the object. */
7283 /* BFD_ASSERT (elf_flags_init (ibfd)); */
7285 in_flags
= elf_elfheader (ibfd
)->e_flags
;
7286 out_flags
= elf_elfheader (obfd
)->e_flags
;
7288 if (!elf_flags_init (obfd
))
7290 /* If the input is the default architecture and had the default
7291 flags then do not bother setting the flags for the output
7292 architecture, instead allow future merges to do this. If no
7293 future merges ever set these flags then they will retain their
7294 uninitialised values, which surprise surprise, correspond
7295 to the default values. */
7296 if (bfd_get_arch_info (ibfd
)->the_default
7297 && elf_elfheader (ibfd
)->e_flags
== 0)
7300 elf_flags_init (obfd
) = TRUE
;
7301 elf_elfheader (obfd
)->e_flags
= in_flags
;
7303 if (bfd_get_arch (obfd
) == bfd_get_arch (ibfd
)
7304 && bfd_get_arch_info (obfd
)->the_default
)
7305 return bfd_set_arch_mach (obfd
, bfd_get_arch (ibfd
),
7306 bfd_get_mach (ibfd
));
7311 /* Identical flags must be compatible. */
7312 if (in_flags
== out_flags
)
7315 /* Check to see if the input BFD actually contains any sections. If
7316 not, its flags may not have been initialised either, but it
7317 cannot actually cause any incompatiblity. Do not short-circuit
7318 dynamic objects; their section list may be emptied by
7319 elf_link_add_object_symbols.
7321 Also check to see if there are no code sections in the input.
7322 In this case there is no need to check for code specific flags.
7323 XXX - do we need to worry about floating-point format compatability
7324 in data sections ? */
7325 if (!(ibfd
->flags
& DYNAMIC
))
7327 bfd_boolean null_input_bfd
= TRUE
;
7328 bfd_boolean only_data_sections
= TRUE
;
7330 for (sec
= ibfd
->sections
; sec
!= NULL
; sec
= sec
->next
)
7332 if ((bfd_section_flags (sec
)
7333 & (SEC_LOAD
| SEC_CODE
| SEC_HAS_CONTENTS
))
7334 == (SEC_LOAD
| SEC_CODE
| SEC_HAS_CONTENTS
))
7335 only_data_sections
= FALSE
;
7337 null_input_bfd
= FALSE
;
7341 if (null_input_bfd
|| only_data_sections
)
7345 return flags_compatible
;
7348 /* Display the flags field. */
7351 elfNN_aarch64_print_private_bfd_data (bfd
*abfd
, void *ptr
)
7353 FILE *file
= (FILE *) ptr
;
7354 unsigned long flags
;
7356 BFD_ASSERT (abfd
!= NULL
&& ptr
!= NULL
);
7358 /* Print normal ELF private data. */
7359 _bfd_elf_print_private_bfd_data (abfd
, ptr
);
7361 flags
= elf_elfheader (abfd
)->e_flags
;
7362 /* Ignore init flag - it may not be set, despite the flags field
7363 containing valid data. */
7365 /* xgettext:c-format */
7366 fprintf (file
, _("private flags = %lx:"), elf_elfheader (abfd
)->e_flags
);
7369 fprintf (file
, _("<Unrecognised flag bits set>"));
7376 /* Find dynamic relocs for H that apply to read-only sections. */
7379 readonly_dynrelocs (struct elf_link_hash_entry
*h
)
7381 struct elf_dyn_relocs
*p
;
7383 for (p
= elf_aarch64_hash_entry (h
)->dyn_relocs
; p
!= NULL
; p
= p
->next
)
7385 asection
*s
= p
->sec
->output_section
;
7387 if (s
!= NULL
&& (s
->flags
& SEC_READONLY
) != 0)
7393 /* Return true if we need copy relocation against EH. */
7396 need_copy_relocation_p (struct elf_aarch64_link_hash_entry
*eh
)
7398 struct elf_dyn_relocs
*p
;
7401 for (p
= eh
->dyn_relocs
; p
!= NULL
; p
= p
->next
)
7403 /* If there is any pc-relative reference, we need to keep copy relocation
7404 to avoid propagating the relocation into runtime that current glibc
7405 does not support. */
7409 s
= p
->sec
->output_section
;
7410 /* Need copy relocation if it's against read-only section. */
7411 if (s
!= NULL
&& (s
->flags
& SEC_READONLY
) != 0)
7418 /* Adjust a symbol defined by a dynamic object and referenced by a
7419 regular object. The current definition is in some section of the
7420 dynamic object, but we're not including those sections. We have to
7421 change the definition to something the rest of the link can
7425 elfNN_aarch64_adjust_dynamic_symbol (struct bfd_link_info
*info
,
7426 struct elf_link_hash_entry
*h
)
7428 struct elf_aarch64_link_hash_table
*htab
;
7431 /* If this is a function, put it in the procedure linkage table. We
7432 will fill in the contents of the procedure linkage table later,
7433 when we know the address of the .got section. */
7434 if (h
->type
== STT_FUNC
|| h
->type
== STT_GNU_IFUNC
|| h
->needs_plt
)
7436 if (h
->plt
.refcount
<= 0
7437 || (h
->type
!= STT_GNU_IFUNC
7438 && (SYMBOL_CALLS_LOCAL (info
, h
)
7439 || (ELF_ST_VISIBILITY (h
->other
) != STV_DEFAULT
7440 && h
->root
.type
== bfd_link_hash_undefweak
))))
7442 /* This case can occur if we saw a CALL26 reloc in
7443 an input file, but the symbol wasn't referred to
7444 by a dynamic object or all references were
7445 garbage collected. In which case we can end up
7447 h
->plt
.offset
= (bfd_vma
) - 1;
7454 /* Otherwise, reset to -1. */
7455 h
->plt
.offset
= (bfd_vma
) - 1;
7458 /* If this is a weak symbol, and there is a real definition, the
7459 processor independent code will have arranged for us to see the
7460 real definition first, and we can just use the same value. */
7461 if (h
->is_weakalias
)
7463 struct elf_link_hash_entry
*def
= weakdef (h
);
7464 BFD_ASSERT (def
->root
.type
== bfd_link_hash_defined
);
7465 h
->root
.u
.def
.section
= def
->root
.u
.def
.section
;
7466 h
->root
.u
.def
.value
= def
->root
.u
.def
.value
;
7467 if (ELIMINATE_COPY_RELOCS
|| info
->nocopyreloc
)
7468 h
->non_got_ref
= def
->non_got_ref
;
7472 /* If we are creating a shared library, we must presume that the
7473 only references to the symbol are via the global offset table.
7474 For such cases we need not do anything here; the relocations will
7475 be handled correctly by relocate_section. */
7476 if (bfd_link_pic (info
))
7479 /* If there are no references to this symbol that do not use the
7480 GOT, we don't need to generate a copy reloc. */
7481 if (!h
->non_got_ref
)
7484 /* If -z nocopyreloc was given, we won't generate them either. */
7485 if (info
->nocopyreloc
)
7491 if (ELIMINATE_COPY_RELOCS
)
7493 struct elf_aarch64_link_hash_entry
*eh
;
7494 /* If we don't find any dynamic relocs in read-only sections, then
7495 we'll be keeping the dynamic relocs and avoiding the copy reloc. */
7496 eh
= (struct elf_aarch64_link_hash_entry
*) h
;
7497 if (!need_copy_relocation_p (eh
))
7504 /* We must allocate the symbol in our .dynbss section, which will
7505 become part of the .bss section of the executable. There will be
7506 an entry for this symbol in the .dynsym section. The dynamic
7507 object will contain position independent code, so all references
7508 from the dynamic object to this symbol will go through the global
7509 offset table. The dynamic linker will use the .dynsym entry to
7510 determine the address it must put in the global offset table, so
7511 both the dynamic object and the regular object will refer to the
7512 same memory location for the variable. */
7514 htab
= elf_aarch64_hash_table (info
);
7516 /* We must generate a R_AARCH64_COPY reloc to tell the dynamic linker
7517 to copy the initial value out of the dynamic object and into the
7518 runtime process image. */
7519 if ((h
->root
.u
.def
.section
->flags
& SEC_READONLY
) != 0)
7521 s
= htab
->root
.sdynrelro
;
7522 srel
= htab
->root
.sreldynrelro
;
7526 s
= htab
->root
.sdynbss
;
7527 srel
= htab
->root
.srelbss
;
7529 if ((h
->root
.u
.def
.section
->flags
& SEC_ALLOC
) != 0 && h
->size
!= 0)
7531 srel
->size
+= RELOC_SIZE (htab
);
7535 return _bfd_elf_adjust_dynamic_copy (info
, h
, s
);
7540 elfNN_aarch64_allocate_local_symbols (bfd
*abfd
, unsigned number
)
7542 struct elf_aarch64_local_symbol
*locals
;
7543 locals
= elf_aarch64_locals (abfd
);
7546 locals
= (struct elf_aarch64_local_symbol
*)
7547 bfd_zalloc (abfd
, number
* sizeof (struct elf_aarch64_local_symbol
));
7550 elf_aarch64_locals (abfd
) = locals
;
7555 /* Create the .got section to hold the global offset table. */
7558 aarch64_elf_create_got_section (bfd
*abfd
, struct bfd_link_info
*info
)
7560 const struct elf_backend_data
*bed
= get_elf_backend_data (abfd
);
7563 struct elf_link_hash_entry
*h
;
7564 struct elf_link_hash_table
*htab
= elf_hash_table (info
);
7566 /* This function may be called more than once. */
7567 if (htab
->sgot
!= NULL
)
7570 flags
= bed
->dynamic_sec_flags
;
7572 s
= bfd_make_section_anyway_with_flags (abfd
,
7573 (bed
->rela_plts_and_copies_p
7574 ? ".rela.got" : ".rel.got"),
7575 (bed
->dynamic_sec_flags
7578 || !bfd_set_section_alignment (s
, bed
->s
->log_file_align
))
7582 s
= bfd_make_section_anyway_with_flags (abfd
, ".got", flags
);
7584 || !bfd_set_section_alignment (s
, bed
->s
->log_file_align
))
7587 htab
->sgot
->size
+= GOT_ENTRY_SIZE
;
7589 if (bed
->want_got_sym
)
7591 /* Define the symbol _GLOBAL_OFFSET_TABLE_ at the start of the .got
7592 (or .got.plt) section. We don't do this in the linker script
7593 because we don't want to define the symbol if we are not creating
7594 a global offset table. */
7595 h
= _bfd_elf_define_linkage_sym (abfd
, info
, s
,
7596 "_GLOBAL_OFFSET_TABLE_");
7597 elf_hash_table (info
)->hgot
= h
;
7602 if (bed
->want_got_plt
)
7604 s
= bfd_make_section_anyway_with_flags (abfd
, ".got.plt", flags
);
7606 || !bfd_set_section_alignment (s
, bed
->s
->log_file_align
))
7611 /* The first bit of the global offset table is the header. */
7612 s
->size
+= bed
->got_header_size
;
7617 /* Look through the relocs for a section during the first phase. */
7620 elfNN_aarch64_check_relocs (bfd
*abfd
, struct bfd_link_info
*info
,
7621 asection
*sec
, const Elf_Internal_Rela
*relocs
)
7623 Elf_Internal_Shdr
*symtab_hdr
;
7624 struct elf_link_hash_entry
**sym_hashes
;
7625 const Elf_Internal_Rela
*rel
;
7626 const Elf_Internal_Rela
*rel_end
;
7629 struct elf_aarch64_link_hash_table
*htab
;
7631 if (bfd_link_relocatable (info
))
7634 BFD_ASSERT (is_aarch64_elf (abfd
));
7636 htab
= elf_aarch64_hash_table (info
);
7639 symtab_hdr
= &elf_symtab_hdr (abfd
);
7640 sym_hashes
= elf_sym_hashes (abfd
);
7642 rel_end
= relocs
+ sec
->reloc_count
;
7643 for (rel
= relocs
; rel
< rel_end
; rel
++)
7645 struct elf_link_hash_entry
*h
;
7646 unsigned int r_symndx
;
7647 unsigned int r_type
;
7648 bfd_reloc_code_real_type bfd_r_type
;
7649 Elf_Internal_Sym
*isym
;
7651 r_symndx
= ELFNN_R_SYM (rel
->r_info
);
7652 r_type
= ELFNN_R_TYPE (rel
->r_info
);
7654 if (r_symndx
>= NUM_SHDR_ENTRIES (symtab_hdr
))
7656 /* xgettext:c-format */
7657 _bfd_error_handler (_("%pB: bad symbol index: %d"), abfd
, r_symndx
);
7661 if (r_symndx
< symtab_hdr
->sh_info
)
7663 /* A local symbol. */
7664 isym
= bfd_sym_from_r_symndx (&htab
->sym_cache
,
7669 /* Check relocation against local STT_GNU_IFUNC symbol. */
7670 if (ELF_ST_TYPE (isym
->st_info
) == STT_GNU_IFUNC
)
7672 h
= elfNN_aarch64_get_local_sym_hash (htab
, abfd
, rel
,
7677 /* Fake a STT_GNU_IFUNC symbol. */
7678 h
->type
= STT_GNU_IFUNC
;
7681 h
->forced_local
= 1;
7682 h
->root
.type
= bfd_link_hash_defined
;
7689 h
= sym_hashes
[r_symndx
- symtab_hdr
->sh_info
];
7690 while (h
->root
.type
== bfd_link_hash_indirect
7691 || h
->root
.type
== bfd_link_hash_warning
)
7692 h
= (struct elf_link_hash_entry
*) h
->root
.u
.i
.link
;
7695 /* Could be done earlier, if h were already available. */
7696 bfd_r_type
= aarch64_tls_transition (abfd
, info
, r_type
, h
, r_symndx
);
7700 /* If a relocation refers to _GLOBAL_OFFSET_TABLE_, create the .got.
7701 This shows up in particular in an R_AARCH64_PREL64 in large model
7702 when calculating the pc-relative address to .got section which is
7703 used to initialize the gp register. */
7704 if (h
->root
.root
.string
7705 && strcmp (h
->root
.root
.string
, "_GLOBAL_OFFSET_TABLE_") == 0)
7707 if (htab
->root
.dynobj
== NULL
)
7708 htab
->root
.dynobj
= abfd
;
7710 if (! aarch64_elf_create_got_section (htab
->root
.dynobj
, info
))
7713 BFD_ASSERT (h
== htab
->root
.hgot
);
7716 /* Create the ifunc sections for static executables. If we
7717 never see an indirect function symbol nor we are building
7718 a static executable, those sections will be empty and
7719 won't appear in output. */
7725 case BFD_RELOC_AARCH64_ADD_LO12
:
7726 case BFD_RELOC_AARCH64_ADR_GOT_PAGE
:
7727 case BFD_RELOC_AARCH64_ADR_HI21_PCREL
:
7728 case BFD_RELOC_AARCH64_CALL26
:
7729 case BFD_RELOC_AARCH64_GOT_LD_PREL19
:
7730 case BFD_RELOC_AARCH64_JUMP26
:
7731 case BFD_RELOC_AARCH64_LD32_GOTPAGE_LO14
:
7732 case BFD_RELOC_AARCH64_LD32_GOT_LO12_NC
:
7733 case BFD_RELOC_AARCH64_LD64_GOTOFF_LO15
:
7734 case BFD_RELOC_AARCH64_LD64_GOTPAGE_LO15
:
7735 case BFD_RELOC_AARCH64_LD64_GOT_LO12_NC
:
7736 case BFD_RELOC_AARCH64_MOVW_GOTOFF_G0_NC
:
7737 case BFD_RELOC_AARCH64_MOVW_GOTOFF_G1
:
7738 case BFD_RELOC_AARCH64_NN
:
7739 if (htab
->root
.dynobj
== NULL
)
7740 htab
->root
.dynobj
= abfd
;
7741 if (!_bfd_elf_create_ifunc_sections (htab
->root
.dynobj
, info
))
7746 /* It is referenced by a non-shared object. */
7752 case BFD_RELOC_AARCH64_16
:
7754 case BFD_RELOC_AARCH64_32
:
7756 if (bfd_link_pic (info
) && (sec
->flags
& SEC_ALLOC
) != 0)
7759 /* This is an absolute symbol. It represents a value instead
7761 && (bfd_is_abs_symbol (&h
->root
)
7762 /* This is an undefined symbol. */
7763 || h
->root
.type
== bfd_link_hash_undefined
))
7766 /* For local symbols, defined global symbols in a non-ABS section,
7767 it is assumed that the value is an address. */
7768 int howto_index
= bfd_r_type
- BFD_RELOC_AARCH64_RELOC_START
;
7770 /* xgettext:c-format */
7771 (_("%pB: relocation %s against `%s' can not be used when making "
7773 abfd
, elfNN_aarch64_howto_table
[howto_index
].name
,
7774 (h
) ? h
->root
.root
.string
: "a local symbol");
7775 bfd_set_error (bfd_error_bad_value
);
7781 case BFD_RELOC_AARCH64_MOVW_G0_NC
:
7782 case BFD_RELOC_AARCH64_MOVW_G1_NC
:
7783 case BFD_RELOC_AARCH64_MOVW_G2_NC
:
7784 case BFD_RELOC_AARCH64_MOVW_G3
:
7785 if (bfd_link_pic (info
))
7787 int howto_index
= bfd_r_type
- BFD_RELOC_AARCH64_RELOC_START
;
7789 /* xgettext:c-format */
7790 (_("%pB: relocation %s against `%s' can not be used when making "
7791 "a shared object; recompile with -fPIC"),
7792 abfd
, elfNN_aarch64_howto_table
[howto_index
].name
,
7793 (h
) ? h
->root
.root
.string
: "a local symbol");
7794 bfd_set_error (bfd_error_bad_value
);
7799 case BFD_RELOC_AARCH64_16_PCREL
:
7800 case BFD_RELOC_AARCH64_32_PCREL
:
7801 case BFD_RELOC_AARCH64_64_PCREL
:
7802 case BFD_RELOC_AARCH64_ADD_LO12
:
7803 case BFD_RELOC_AARCH64_ADR_HI21_NC_PCREL
:
7804 case BFD_RELOC_AARCH64_ADR_HI21_PCREL
:
7805 case BFD_RELOC_AARCH64_ADR_LO21_PCREL
:
7806 case BFD_RELOC_AARCH64_LDST128_LO12
:
7807 case BFD_RELOC_AARCH64_LDST16_LO12
:
7808 case BFD_RELOC_AARCH64_LDST32_LO12
:
7809 case BFD_RELOC_AARCH64_LDST64_LO12
:
7810 case BFD_RELOC_AARCH64_LDST8_LO12
:
7811 case BFD_RELOC_AARCH64_LD_LO19_PCREL
:
7812 if (h
== NULL
|| bfd_link_pic (info
))
7816 case BFD_RELOC_AARCH64_NN
:
7818 /* We don't need to handle relocs into sections not going into
7819 the "real" output. */
7820 if ((sec
->flags
& SEC_ALLOC
) == 0)
7825 if (!bfd_link_pic (info
))
7828 h
->plt
.refcount
+= 1;
7829 h
->pointer_equality_needed
= 1;
7832 /* No need to do anything if we're not creating a shared
7834 if (!(bfd_link_pic (info
)
7835 /* If on the other hand, we are creating an executable, we
7836 may need to keep relocations for symbols satisfied by a
7837 dynamic library if we manage to avoid copy relocs for the
7840 NOTE: Currently, there is no support of copy relocs
7841 elimination on pc-relative relocation types, because there is
7842 no dynamic relocation support for them in glibc. We still
7843 record the dynamic symbol reference for them. This is
7844 because one symbol may be referenced by both absolute
7845 relocation (for example, BFD_RELOC_AARCH64_NN) and
7846 pc-relative relocation. We need full symbol reference
7847 information to make correct decision later in
7848 elfNN_aarch64_adjust_dynamic_symbol. */
7849 || (ELIMINATE_COPY_RELOCS
7850 && !bfd_link_pic (info
)
7852 && (h
->root
.type
== bfd_link_hash_defweak
7853 || !h
->def_regular
))))
7857 struct elf_dyn_relocs
*p
;
7858 struct elf_dyn_relocs
**head
;
7859 int howto_index
= bfd_r_type
- BFD_RELOC_AARCH64_RELOC_START
;
7861 /* We must copy these reloc types into the output file.
7862 Create a reloc section in dynobj and make room for
7866 if (htab
->root
.dynobj
== NULL
)
7867 htab
->root
.dynobj
= abfd
;
7869 sreloc
= _bfd_elf_make_dynamic_reloc_section
7870 (sec
, htab
->root
.dynobj
, LOG_FILE_ALIGN
, abfd
, /*rela? */ TRUE
);
7876 /* If this is a global symbol, we count the number of
7877 relocations we need for this symbol. */
7880 struct elf_aarch64_link_hash_entry
*eh
;
7881 eh
= (struct elf_aarch64_link_hash_entry
*) h
;
7882 head
= &eh
->dyn_relocs
;
7886 /* Track dynamic relocs needed for local syms too.
7887 We really need local syms available to do this
7893 isym
= bfd_sym_from_r_symndx (&htab
->sym_cache
,
7898 s
= bfd_section_from_elf_index (abfd
, isym
->st_shndx
);
7902 /* Beware of type punned pointers vs strict aliasing
7904 vpp
= &(elf_section_data (s
)->local_dynrel
);
7905 head
= (struct elf_dyn_relocs
**) vpp
;
7909 if (p
== NULL
|| p
->sec
!= sec
)
7911 size_t amt
= sizeof *p
;
7912 p
= ((struct elf_dyn_relocs
*)
7913 bfd_zalloc (htab
->root
.dynobj
, amt
));
7923 if (elfNN_aarch64_howto_table
[howto_index
].pc_relative
)
7928 /* RR: We probably want to keep a consistency check that
7929 there are no dangling GOT_PAGE relocs. */
7930 case BFD_RELOC_AARCH64_ADR_GOT_PAGE
:
7931 case BFD_RELOC_AARCH64_GOT_LD_PREL19
:
7932 case BFD_RELOC_AARCH64_LD32_GOTPAGE_LO14
:
7933 case BFD_RELOC_AARCH64_LD32_GOT_LO12_NC
:
7934 case BFD_RELOC_AARCH64_LD64_GOTOFF_LO15
:
7935 case BFD_RELOC_AARCH64_LD64_GOTPAGE_LO15
:
7936 case BFD_RELOC_AARCH64_LD64_GOT_LO12_NC
:
7937 case BFD_RELOC_AARCH64_MOVW_GOTOFF_G0_NC
:
7938 case BFD_RELOC_AARCH64_MOVW_GOTOFF_G1
:
7939 case BFD_RELOC_AARCH64_TLSDESC_ADD_LO12
:
7940 case BFD_RELOC_AARCH64_TLSDESC_ADR_PAGE21
:
7941 case BFD_RELOC_AARCH64_TLSDESC_ADR_PREL21
:
7942 case BFD_RELOC_AARCH64_TLSDESC_LD32_LO12_NC
:
7943 case BFD_RELOC_AARCH64_TLSDESC_LD64_LO12
:
7944 case BFD_RELOC_AARCH64_TLSDESC_LD_PREL19
:
7945 case BFD_RELOC_AARCH64_TLSDESC_OFF_G0_NC
:
7946 case BFD_RELOC_AARCH64_TLSDESC_OFF_G1
:
7947 case BFD_RELOC_AARCH64_TLSGD_ADD_LO12_NC
:
7948 case BFD_RELOC_AARCH64_TLSGD_ADR_PAGE21
:
7949 case BFD_RELOC_AARCH64_TLSGD_ADR_PREL21
:
7950 case BFD_RELOC_AARCH64_TLSGD_MOVW_G0_NC
:
7951 case BFD_RELOC_AARCH64_TLSGD_MOVW_G1
:
7952 case BFD_RELOC_AARCH64_TLSIE_ADR_GOTTPREL_PAGE21
:
7953 case BFD_RELOC_AARCH64_TLSIE_LD32_GOTTPREL_LO12_NC
:
7954 case BFD_RELOC_AARCH64_TLSIE_LD64_GOTTPREL_LO12_NC
:
7955 case BFD_RELOC_AARCH64_TLSIE_LD_GOTTPREL_PREL19
:
7956 case BFD_RELOC_AARCH64_TLSIE_MOVW_GOTTPREL_G0_NC
:
7957 case BFD_RELOC_AARCH64_TLSIE_MOVW_GOTTPREL_G1
:
7958 case BFD_RELOC_AARCH64_TLSLD_ADD_LO12_NC
:
7959 case BFD_RELOC_AARCH64_TLSLD_ADR_PAGE21
:
7960 case BFD_RELOC_AARCH64_TLSLD_ADR_PREL21
:
7963 unsigned old_got_type
;
7965 got_type
= aarch64_reloc_got_type (bfd_r_type
);
7969 h
->got
.refcount
+= 1;
7970 old_got_type
= elf_aarch64_hash_entry (h
)->got_type
;
7974 struct elf_aarch64_local_symbol
*locals
;
7976 if (!elfNN_aarch64_allocate_local_symbols
7977 (abfd
, symtab_hdr
->sh_info
))
7980 locals
= elf_aarch64_locals (abfd
);
7981 BFD_ASSERT (r_symndx
< symtab_hdr
->sh_info
);
7982 locals
[r_symndx
].got_refcount
+= 1;
7983 old_got_type
= locals
[r_symndx
].got_type
;
7986 /* If a variable is accessed with both general dynamic TLS
7987 methods, two slots may be created. */
7988 if (GOT_TLS_GD_ANY_P (old_got_type
) && GOT_TLS_GD_ANY_P (got_type
))
7989 got_type
|= old_got_type
;
7991 /* We will already have issued an error message if there
7992 is a TLS/non-TLS mismatch, based on the symbol type.
7993 So just combine any TLS types needed. */
7994 if (old_got_type
!= GOT_UNKNOWN
&& old_got_type
!= GOT_NORMAL
7995 && got_type
!= GOT_NORMAL
)
7996 got_type
|= old_got_type
;
7998 /* If the symbol is accessed by both IE and GD methods, we
7999 are able to relax. Turn off the GD flag, without
8000 messing up with any other kind of TLS types that may be
8002 if ((got_type
& GOT_TLS_IE
) && GOT_TLS_GD_ANY_P (got_type
))
8003 got_type
&= ~ (GOT_TLSDESC_GD
| GOT_TLS_GD
);
8005 if (old_got_type
!= got_type
)
8008 elf_aarch64_hash_entry (h
)->got_type
= got_type
;
8011 struct elf_aarch64_local_symbol
*locals
;
8012 locals
= elf_aarch64_locals (abfd
);
8013 BFD_ASSERT (r_symndx
< symtab_hdr
->sh_info
);
8014 locals
[r_symndx
].got_type
= got_type
;
8018 if (htab
->root
.dynobj
== NULL
)
8019 htab
->root
.dynobj
= abfd
;
8020 if (! aarch64_elf_create_got_section (htab
->root
.dynobj
, info
))
8025 case BFD_RELOC_AARCH64_CALL26
:
8026 case BFD_RELOC_AARCH64_JUMP26
:
8027 /* If this is a local symbol then we resolve it
8028 directly without creating a PLT entry. */
8033 if (h
->plt
.refcount
<= 0)
8034 h
->plt
.refcount
= 1;
8036 h
->plt
.refcount
+= 1;
8047 /* Treat mapping symbols as special target symbols. */
8050 elfNN_aarch64_is_target_special_symbol (bfd
*abfd ATTRIBUTE_UNUSED
,
8053 return bfd_is_aarch64_special_symbol_name (sym
->name
,
8054 BFD_AARCH64_SPECIAL_SYM_TYPE_ANY
);
8057 /* If the ELF symbol SYM might be a function in SEC, return the
8058 function size and set *CODE_OFF to the function's entry point,
8059 otherwise return zero. */
8061 static bfd_size_type
8062 elfNN_aarch64_maybe_function_sym (const asymbol
*sym
, asection
*sec
,
8067 if ((sym
->flags
& (BSF_SECTION_SYM
| BSF_FILE
| BSF_OBJECT
8068 | BSF_THREAD_LOCAL
| BSF_RELC
| BSF_SRELC
)) != 0
8069 || sym
->section
!= sec
)
8072 if (!(sym
->flags
& BSF_SYNTHETIC
))
8073 switch (ELF_ST_TYPE (((elf_symbol_type
*) sym
)->internal_elf_sym
.st_info
))
8082 if ((sym
->flags
& BSF_LOCAL
)
8083 && bfd_is_aarch64_special_symbol_name (sym
->name
,
8084 BFD_AARCH64_SPECIAL_SYM_TYPE_ANY
))
8087 *code_off
= sym
->value
;
8089 if (!(sym
->flags
& BSF_SYNTHETIC
))
8090 size
= ((elf_symbol_type
*) sym
)->internal_elf_sym
.st_size
;
8097 elfNN_aarch64_find_inliner_info (bfd
*abfd
,
8098 const char **filename_ptr
,
8099 const char **functionname_ptr
,
8100 unsigned int *line_ptr
)
8103 found
= _bfd_dwarf2_find_inliner_info
8104 (abfd
, filename_ptr
,
8105 functionname_ptr
, line_ptr
, &elf_tdata (abfd
)->dwarf2_find_line_info
);
8111 elfNN_aarch64_init_file_header (bfd
*abfd
, struct bfd_link_info
*link_info
)
8113 Elf_Internal_Ehdr
*i_ehdrp
; /* ELF file header, internal form. */
8115 if (!_bfd_elf_init_file_header (abfd
, link_info
))
8118 i_ehdrp
= elf_elfheader (abfd
);
8119 i_ehdrp
->e_ident
[EI_ABIVERSION
] = AARCH64_ELF_ABI_VERSION
;
8123 static enum elf_reloc_type_class
8124 elfNN_aarch64_reloc_type_class (const struct bfd_link_info
*info ATTRIBUTE_UNUSED
,
8125 const asection
*rel_sec ATTRIBUTE_UNUSED
,
8126 const Elf_Internal_Rela
*rela
)
8128 struct elf_aarch64_link_hash_table
*htab
= elf_aarch64_hash_table (info
);
8130 if (htab
->root
.dynsym
!= NULL
8131 && htab
->root
.dynsym
->contents
!= NULL
)
8133 /* Check relocation against STT_GNU_IFUNC symbol if there are
8135 bfd
*abfd
= info
->output_bfd
;
8136 const struct elf_backend_data
*bed
= get_elf_backend_data (abfd
);
8137 unsigned long r_symndx
= ELFNN_R_SYM (rela
->r_info
);
8138 if (r_symndx
!= STN_UNDEF
)
8140 Elf_Internal_Sym sym
;
8141 if (!bed
->s
->swap_symbol_in (abfd
,
8142 (htab
->root
.dynsym
->contents
8143 + r_symndx
* bed
->s
->sizeof_sym
),
8146 /* xgettext:c-format */
8147 _bfd_error_handler (_("%pB symbol number %lu references"
8148 " nonexistent SHT_SYMTAB_SHNDX section"),
8150 /* Ideally an error class should be returned here. */
8152 else if (ELF_ST_TYPE (sym
.st_info
) == STT_GNU_IFUNC
)
8153 return reloc_class_ifunc
;
8157 switch ((int) ELFNN_R_TYPE (rela
->r_info
))
8159 case AARCH64_R (IRELATIVE
):
8160 return reloc_class_ifunc
;
8161 case AARCH64_R (RELATIVE
):
8162 return reloc_class_relative
;
8163 case AARCH64_R (JUMP_SLOT
):
8164 return reloc_class_plt
;
8165 case AARCH64_R (COPY
):
8166 return reloc_class_copy
;
8168 return reloc_class_normal
;
8172 /* Handle an AArch64 specific section when reading an object file. This is
8173 called when bfd_section_from_shdr finds a section with an unknown
8177 elfNN_aarch64_section_from_shdr (bfd
*abfd
,
8178 Elf_Internal_Shdr
*hdr
,
8179 const char *name
, int shindex
)
8181 /* There ought to be a place to keep ELF backend specific flags, but
8182 at the moment there isn't one. We just keep track of the
8183 sections by their name, instead. Fortunately, the ABI gives
8184 names for all the AArch64 specific sections, so we will probably get
8186 switch (hdr
->sh_type
)
8188 case SHT_AARCH64_ATTRIBUTES
:
8195 if (!_bfd_elf_make_section_from_shdr (abfd
, hdr
, name
, shindex
))
8201 /* A structure used to record a list of sections, independently
8202 of the next and prev fields in the asection structure. */
8203 typedef struct section_list
8206 struct section_list
*next
;
8207 struct section_list
*prev
;
8211 /* Unfortunately we need to keep a list of sections for which
8212 an _aarch64_elf_section_data structure has been allocated. This
8213 is because it is possible for functions like elfNN_aarch64_write_section
8214 to be called on a section which has had an elf_data_structure
8215 allocated for it (and so the used_by_bfd field is valid) but
8216 for which the AArch64 extended version of this structure - the
8217 _aarch64_elf_section_data structure - has not been allocated. */
8218 static section_list
*sections_with_aarch64_elf_section_data
= NULL
;
8221 record_section_with_aarch64_elf_section_data (asection
*sec
)
8223 struct section_list
*entry
;
8225 entry
= bfd_malloc (sizeof (*entry
));
8229 entry
->next
= sections_with_aarch64_elf_section_data
;
8231 if (entry
->next
!= NULL
)
8232 entry
->next
->prev
= entry
;
8233 sections_with_aarch64_elf_section_data
= entry
;
8236 static struct section_list
*
8237 find_aarch64_elf_section_entry (asection
*sec
)
8239 struct section_list
*entry
;
8240 static struct section_list
*last_entry
= NULL
;
8242 /* This is a short cut for the typical case where the sections are added
8243 to the sections_with_aarch64_elf_section_data list in forward order and
8244 then looked up here in backwards order. This makes a real difference
8245 to the ld-srec/sec64k.exp linker test. */
8246 entry
= sections_with_aarch64_elf_section_data
;
8247 if (last_entry
!= NULL
)
8249 if (last_entry
->sec
== sec
)
8251 else if (last_entry
->next
!= NULL
&& last_entry
->next
->sec
== sec
)
8252 entry
= last_entry
->next
;
8255 for (; entry
; entry
= entry
->next
)
8256 if (entry
->sec
== sec
)
8260 /* Record the entry prior to this one - it is the entry we are
8261 most likely to want to locate next time. Also this way if we
8262 have been called from
8263 unrecord_section_with_aarch64_elf_section_data () we will not
8264 be caching a pointer that is about to be freed. */
8265 last_entry
= entry
->prev
;
8271 unrecord_section_with_aarch64_elf_section_data (asection
*sec
)
8273 struct section_list
*entry
;
8275 entry
= find_aarch64_elf_section_entry (sec
);
8279 if (entry
->prev
!= NULL
)
8280 entry
->prev
->next
= entry
->next
;
8281 if (entry
->next
!= NULL
)
8282 entry
->next
->prev
= entry
->prev
;
8283 if (entry
== sections_with_aarch64_elf_section_data
)
8284 sections_with_aarch64_elf_section_data
= entry
->next
;
8293 struct bfd_link_info
*info
;
8296 int (*func
) (void *, const char *, Elf_Internal_Sym
*,
8297 asection
*, struct elf_link_hash_entry
*);
8298 } output_arch_syminfo
;
8300 enum map_symbol_type
8307 /* Output a single mapping symbol. */
8310 elfNN_aarch64_output_map_sym (output_arch_syminfo
*osi
,
8311 enum map_symbol_type type
, bfd_vma offset
)
8313 static const char *names
[2] = { "$x", "$d" };
8314 Elf_Internal_Sym sym
;
8316 sym
.st_value
= (osi
->sec
->output_section
->vma
8317 + osi
->sec
->output_offset
+ offset
);
8320 sym
.st_info
= ELF_ST_INFO (STB_LOCAL
, STT_NOTYPE
);
8321 sym
.st_shndx
= osi
->sec_shndx
;
8322 return osi
->func (osi
->finfo
, names
[type
], &sym
, osi
->sec
, NULL
) == 1;
8325 /* Output a single local symbol for a generated stub. */
8328 elfNN_aarch64_output_stub_sym (output_arch_syminfo
*osi
, const char *name
,
8329 bfd_vma offset
, bfd_vma size
)
8331 Elf_Internal_Sym sym
;
8333 sym
.st_value
= (osi
->sec
->output_section
->vma
8334 + osi
->sec
->output_offset
+ offset
);
8337 sym
.st_info
= ELF_ST_INFO (STB_LOCAL
, STT_FUNC
);
8338 sym
.st_shndx
= osi
->sec_shndx
;
8339 return osi
->func (osi
->finfo
, name
, &sym
, osi
->sec
, NULL
) == 1;
8343 aarch64_map_one_stub (struct bfd_hash_entry
*gen_entry
, void *in_arg
)
8345 struct elf_aarch64_stub_hash_entry
*stub_entry
;
8349 output_arch_syminfo
*osi
;
8351 /* Massage our args to the form they really have. */
8352 stub_entry
= (struct elf_aarch64_stub_hash_entry
*) gen_entry
;
8353 osi
= (output_arch_syminfo
*) in_arg
;
8355 stub_sec
= stub_entry
->stub_sec
;
8357 /* Ensure this stub is attached to the current section being
8359 if (stub_sec
!= osi
->sec
)
8362 addr
= (bfd_vma
) stub_entry
->stub_offset
;
8364 stub_name
= stub_entry
->output_name
;
8366 switch (stub_entry
->stub_type
)
8368 case aarch64_stub_adrp_branch
:
8369 if (!elfNN_aarch64_output_stub_sym (osi
, stub_name
, addr
,
8370 sizeof (aarch64_adrp_branch_stub
)))
8372 if (!elfNN_aarch64_output_map_sym (osi
, AARCH64_MAP_INSN
, addr
))
8375 case aarch64_stub_long_branch
:
8376 if (!elfNN_aarch64_output_stub_sym
8377 (osi
, stub_name
, addr
, sizeof (aarch64_long_branch_stub
)))
8379 if (!elfNN_aarch64_output_map_sym (osi
, AARCH64_MAP_INSN
, addr
))
8381 if (!elfNN_aarch64_output_map_sym (osi
, AARCH64_MAP_DATA
, addr
+ 16))
8384 case aarch64_stub_erratum_835769_veneer
:
8385 if (!elfNN_aarch64_output_stub_sym (osi
, stub_name
, addr
,
8386 sizeof (aarch64_erratum_835769_stub
)))
8388 if (!elfNN_aarch64_output_map_sym (osi
, AARCH64_MAP_INSN
, addr
))
8391 case aarch64_stub_erratum_843419_veneer
:
8392 if (!elfNN_aarch64_output_stub_sym (osi
, stub_name
, addr
,
8393 sizeof (aarch64_erratum_843419_stub
)))
8395 if (!elfNN_aarch64_output_map_sym (osi
, AARCH64_MAP_INSN
, addr
))
8398 case aarch64_stub_none
:
8408 /* Output mapping symbols for linker generated sections. */
8411 elfNN_aarch64_output_arch_local_syms (bfd
*output_bfd
,
8412 struct bfd_link_info
*info
,
8414 int (*func
) (void *, const char *,
8417 struct elf_link_hash_entry
8420 output_arch_syminfo osi
;
8421 struct elf_aarch64_link_hash_table
*htab
;
8423 htab
= elf_aarch64_hash_table (info
);
8429 /* Long calls stubs. */
8430 if (htab
->stub_bfd
&& htab
->stub_bfd
->sections
)
8434 for (stub_sec
= htab
->stub_bfd
->sections
;
8435 stub_sec
!= NULL
; stub_sec
= stub_sec
->next
)
8437 /* Ignore non-stub sections. */
8438 if (!strstr (stub_sec
->name
, STUB_SUFFIX
))
8443 osi
.sec_shndx
= _bfd_elf_section_from_bfd_section
8444 (output_bfd
, osi
.sec
->output_section
);
8446 /* The first instruction in a stub is always a branch. */
8447 if (!elfNN_aarch64_output_map_sym (&osi
, AARCH64_MAP_INSN
, 0))
8450 bfd_hash_traverse (&htab
->stub_hash_table
, aarch64_map_one_stub
,
8455 /* Finally, output mapping symbols for the PLT. */
8456 if (!htab
->root
.splt
|| htab
->root
.splt
->size
== 0)
8459 osi
.sec_shndx
= _bfd_elf_section_from_bfd_section
8460 (output_bfd
, htab
->root
.splt
->output_section
);
8461 osi
.sec
= htab
->root
.splt
;
8463 elfNN_aarch64_output_map_sym (&osi
, AARCH64_MAP_INSN
, 0);
8469 /* Allocate target specific section data. */
8472 elfNN_aarch64_new_section_hook (bfd
*abfd
, asection
*sec
)
8474 if (!sec
->used_by_bfd
)
8476 _aarch64_elf_section_data
*sdata
;
8477 size_t amt
= sizeof (*sdata
);
8479 sdata
= bfd_zalloc (abfd
, amt
);
8482 sec
->used_by_bfd
= sdata
;
8485 record_section_with_aarch64_elf_section_data (sec
);
8487 return _bfd_elf_new_section_hook (abfd
, sec
);
8492 unrecord_section_via_map_over_sections (bfd
*abfd ATTRIBUTE_UNUSED
,
8494 void *ignore ATTRIBUTE_UNUSED
)
8496 unrecord_section_with_aarch64_elf_section_data (sec
);
8500 elfNN_aarch64_close_and_cleanup (bfd
*abfd
)
8503 bfd_map_over_sections (abfd
,
8504 unrecord_section_via_map_over_sections
, NULL
);
8506 return _bfd_elf_close_and_cleanup (abfd
);
8510 elfNN_aarch64_bfd_free_cached_info (bfd
*abfd
)
8513 bfd_map_over_sections (abfd
,
8514 unrecord_section_via_map_over_sections
, NULL
);
8516 return _bfd_free_cached_info (abfd
);
8519 /* Create dynamic sections. This is different from the ARM backend in that
8520 the got, plt, gotplt and their relocation sections are all created in the
8521 standard part of the bfd elf backend. */
8524 elfNN_aarch64_create_dynamic_sections (bfd
*dynobj
,
8525 struct bfd_link_info
*info
)
8527 /* We need to create .got section. */
8528 if (!aarch64_elf_create_got_section (dynobj
, info
))
8531 return _bfd_elf_create_dynamic_sections (dynobj
, info
);
8535 /* Allocate space in .plt, .got and associated reloc sections for
8539 elfNN_aarch64_allocate_dynrelocs (struct elf_link_hash_entry
*h
, void *inf
)
8541 struct bfd_link_info
*info
;
8542 struct elf_aarch64_link_hash_table
*htab
;
8543 struct elf_aarch64_link_hash_entry
*eh
;
8544 struct elf_dyn_relocs
*p
;
8546 /* An example of a bfd_link_hash_indirect symbol is versioned
8547 symbol. For example: __gxx_personality_v0(bfd_link_hash_indirect)
8548 -> __gxx_personality_v0(bfd_link_hash_defined)
8550 There is no need to process bfd_link_hash_indirect symbols here
8551 because we will also be presented with the concrete instance of
8552 the symbol and elfNN_aarch64_copy_indirect_symbol () will have been
8553 called to copy all relevant data from the generic to the concrete
8555 if (h
->root
.type
== bfd_link_hash_indirect
)
8558 if (h
->root
.type
== bfd_link_hash_warning
)
8559 h
= (struct elf_link_hash_entry
*) h
->root
.u
.i
.link
;
8561 info
= (struct bfd_link_info
*) inf
;
8562 htab
= elf_aarch64_hash_table (info
);
8564 /* Since STT_GNU_IFUNC symbol must go through PLT, we handle it
8565 here if it is defined and referenced in a non-shared object. */
8566 if (h
->type
== STT_GNU_IFUNC
8569 else if (htab
->root
.dynamic_sections_created
&& h
->plt
.refcount
> 0)
8571 /* Make sure this symbol is output as a dynamic symbol.
8572 Undefined weak syms won't yet be marked as dynamic. */
8573 if (h
->dynindx
== -1 && !h
->forced_local
8574 && h
->root
.type
== bfd_link_hash_undefweak
)
8576 if (!bfd_elf_link_record_dynamic_symbol (info
, h
))
8580 if (bfd_link_pic (info
) || WILL_CALL_FINISH_DYNAMIC_SYMBOL (1, 0, h
))
8582 asection
*s
= htab
->root
.splt
;
8584 /* If this is the first .plt entry, make room for the special
8587 s
->size
+= htab
->plt_header_size
;
8589 h
->plt
.offset
= s
->size
;
8591 /* If this symbol is not defined in a regular file, and we are
8592 not generating a shared library, then set the symbol to this
8593 location in the .plt. This is required to make function
8594 pointers compare as equal between the normal executable and
8595 the shared library. */
8596 if (!bfd_link_pic (info
) && !h
->def_regular
)
8598 h
->root
.u
.def
.section
= s
;
8599 h
->root
.u
.def
.value
= h
->plt
.offset
;
8602 /* Make room for this entry. For now we only create the
8603 small model PLT entries. We later need to find a way
8604 of relaxing into these from the large model PLT entries. */
8605 s
->size
+= htab
->plt_entry_size
;
8607 /* We also need to make an entry in the .got.plt section, which
8608 will be placed in the .got section by the linker script. */
8609 htab
->root
.sgotplt
->size
+= GOT_ENTRY_SIZE
;
8611 /* We also need to make an entry in the .rela.plt section. */
8612 htab
->root
.srelplt
->size
+= RELOC_SIZE (htab
);
8614 /* We need to ensure that all GOT entries that serve the PLT
8615 are consecutive with the special GOT slots [0] [1] and
8616 [2]. Any addtional relocations, such as
8617 R_AARCH64_TLSDESC, must be placed after the PLT related
8618 entries. We abuse the reloc_count such that during
8619 sizing we adjust reloc_count to indicate the number of
8620 PLT related reserved entries. In subsequent phases when
8621 filling in the contents of the reloc entries, PLT related
8622 entries are placed by computing their PLT index (0
8623 .. reloc_count). While other none PLT relocs are placed
8624 at the slot indicated by reloc_count and reloc_count is
8627 htab
->root
.srelplt
->reloc_count
++;
8629 /* Mark the DSO in case R_<CLS>_JUMP_SLOT relocs against
8630 variant PCS symbols are present. */
8631 if (h
->other
& STO_AARCH64_VARIANT_PCS
)
8632 htab
->variant_pcs
= 1;
8637 h
->plt
.offset
= (bfd_vma
) - 1;
8643 h
->plt
.offset
= (bfd_vma
) - 1;
8647 eh
= (struct elf_aarch64_link_hash_entry
*) h
;
8648 eh
->tlsdesc_got_jump_table_offset
= (bfd_vma
) - 1;
8650 if (h
->got
.refcount
> 0)
8653 unsigned got_type
= elf_aarch64_hash_entry (h
)->got_type
;
8655 h
->got
.offset
= (bfd_vma
) - 1;
8657 dyn
= htab
->root
.dynamic_sections_created
;
8659 /* Make sure this symbol is output as a dynamic symbol.
8660 Undefined weak syms won't yet be marked as dynamic. */
8661 if (dyn
&& h
->dynindx
== -1 && !h
->forced_local
8662 && h
->root
.type
== bfd_link_hash_undefweak
)
8664 if (!bfd_elf_link_record_dynamic_symbol (info
, h
))
8668 if (got_type
== GOT_UNKNOWN
)
8671 else if (got_type
== GOT_NORMAL
)
8673 h
->got
.offset
= htab
->root
.sgot
->size
;
8674 htab
->root
.sgot
->size
+= GOT_ENTRY_SIZE
;
8675 if ((ELF_ST_VISIBILITY (h
->other
) == STV_DEFAULT
8676 || h
->root
.type
!= bfd_link_hash_undefweak
)
8677 && (bfd_link_pic (info
)
8678 || WILL_CALL_FINISH_DYNAMIC_SYMBOL (dyn
, 0, h
))
8679 /* Undefined weak symbol in static PIE resolves to 0 without
8680 any dynamic relocations. */
8681 && !UNDEFWEAK_NO_DYNAMIC_RELOC (info
, h
))
8683 htab
->root
.srelgot
->size
+= RELOC_SIZE (htab
);
8689 if (got_type
& GOT_TLSDESC_GD
)
8691 eh
->tlsdesc_got_jump_table_offset
=
8692 (htab
->root
.sgotplt
->size
8693 - aarch64_compute_jump_table_size (htab
));
8694 htab
->root
.sgotplt
->size
+= GOT_ENTRY_SIZE
* 2;
8695 h
->got
.offset
= (bfd_vma
) - 2;
8698 if (got_type
& GOT_TLS_GD
)
8700 h
->got
.offset
= htab
->root
.sgot
->size
;
8701 htab
->root
.sgot
->size
+= GOT_ENTRY_SIZE
* 2;
8704 if (got_type
& GOT_TLS_IE
)
8706 h
->got
.offset
= htab
->root
.sgot
->size
;
8707 htab
->root
.sgot
->size
+= GOT_ENTRY_SIZE
;
8710 indx
= h
&& h
->dynindx
!= -1 ? h
->dynindx
: 0;
8711 if ((ELF_ST_VISIBILITY (h
->other
) == STV_DEFAULT
8712 || h
->root
.type
!= bfd_link_hash_undefweak
)
8713 && (!bfd_link_executable (info
)
8715 || WILL_CALL_FINISH_DYNAMIC_SYMBOL (dyn
, 0, h
)))
8717 if (got_type
& GOT_TLSDESC_GD
)
8719 htab
->root
.srelplt
->size
+= RELOC_SIZE (htab
);
8720 /* Note reloc_count not incremented here! We have
8721 already adjusted reloc_count for this relocation
8724 /* TLSDESC PLT is now needed, but not yet determined. */
8725 htab
->tlsdesc_plt
= (bfd_vma
) - 1;
8728 if (got_type
& GOT_TLS_GD
)
8729 htab
->root
.srelgot
->size
+= RELOC_SIZE (htab
) * 2;
8731 if (got_type
& GOT_TLS_IE
)
8732 htab
->root
.srelgot
->size
+= RELOC_SIZE (htab
);
8738 h
->got
.offset
= (bfd_vma
) - 1;
8741 if (eh
->dyn_relocs
== NULL
)
8744 /* In the shared -Bsymbolic case, discard space allocated for
8745 dynamic pc-relative relocs against symbols which turn out to be
8746 defined in regular objects. For the normal shared case, discard
8747 space for pc-relative relocs that have become local due to symbol
8748 visibility changes. */
8750 if (bfd_link_pic (info
))
8752 /* Relocs that use pc_count are those that appear on a call
8753 insn, or certain REL relocs that can generated via assembly.
8754 We want calls to protected symbols to resolve directly to the
8755 function rather than going via the plt. If people want
8756 function pointer comparisons to work as expected then they
8757 should avoid writing weird assembly. */
8758 if (SYMBOL_CALLS_LOCAL (info
, h
))
8760 struct elf_dyn_relocs
**pp
;
8762 for (pp
= &eh
->dyn_relocs
; (p
= *pp
) != NULL
;)
8764 p
->count
-= p
->pc_count
;
8773 /* Also discard relocs on undefined weak syms with non-default
8775 if (eh
->dyn_relocs
!= NULL
&& h
->root
.type
== bfd_link_hash_undefweak
)
8777 if (ELF_ST_VISIBILITY (h
->other
) != STV_DEFAULT
8778 || UNDEFWEAK_NO_DYNAMIC_RELOC (info
, h
))
8779 eh
->dyn_relocs
= NULL
;
8781 /* Make sure undefined weak symbols are output as a dynamic
8783 else if (h
->dynindx
== -1
8785 && h
->root
.type
== bfd_link_hash_undefweak
8786 && !bfd_elf_link_record_dynamic_symbol (info
, h
))
8791 else if (ELIMINATE_COPY_RELOCS
)
8793 /* For the non-shared case, discard space for relocs against
8794 symbols which turn out to need copy relocs or are not
8800 || (htab
->root
.dynamic_sections_created
8801 && (h
->root
.type
== bfd_link_hash_undefweak
8802 || h
->root
.type
== bfd_link_hash_undefined
))))
8804 /* Make sure this symbol is output as a dynamic symbol.
8805 Undefined weak syms won't yet be marked as dynamic. */
8806 if (h
->dynindx
== -1
8808 && h
->root
.type
== bfd_link_hash_undefweak
8809 && !bfd_elf_link_record_dynamic_symbol (info
, h
))
8812 /* If that succeeded, we know we'll be keeping all the
8814 if (h
->dynindx
!= -1)
8818 eh
->dyn_relocs
= NULL
;
8823 /* Finally, allocate space. */
8824 for (p
= eh
->dyn_relocs
; p
!= NULL
; p
= p
->next
)
8828 sreloc
= elf_section_data (p
->sec
)->sreloc
;
8830 BFD_ASSERT (sreloc
!= NULL
);
8832 sreloc
->size
+= p
->count
* RELOC_SIZE (htab
);
8838 /* Allocate space in .plt, .got and associated reloc sections for
8839 ifunc dynamic relocs. */
8842 elfNN_aarch64_allocate_ifunc_dynrelocs (struct elf_link_hash_entry
*h
,
8845 struct bfd_link_info
*info
;
8846 struct elf_aarch64_link_hash_table
*htab
;
8847 struct elf_aarch64_link_hash_entry
*eh
;
8849 /* An example of a bfd_link_hash_indirect symbol is versioned
8850 symbol. For example: __gxx_personality_v0(bfd_link_hash_indirect)
8851 -> __gxx_personality_v0(bfd_link_hash_defined)
8853 There is no need to process bfd_link_hash_indirect symbols here
8854 because we will also be presented with the concrete instance of
8855 the symbol and elfNN_aarch64_copy_indirect_symbol () will have been
8856 called to copy all relevant data from the generic to the concrete
8858 if (h
->root
.type
== bfd_link_hash_indirect
)
8861 if (h
->root
.type
== bfd_link_hash_warning
)
8862 h
= (struct elf_link_hash_entry
*) h
->root
.u
.i
.link
;
8864 info
= (struct bfd_link_info
*) inf
;
8865 htab
= elf_aarch64_hash_table (info
);
8867 eh
= (struct elf_aarch64_link_hash_entry
*) h
;
8869 /* Since STT_GNU_IFUNC symbol must go through PLT, we handle it
8870 here if it is defined and referenced in a non-shared object. */
8871 if (h
->type
== STT_GNU_IFUNC
8873 return _bfd_elf_allocate_ifunc_dyn_relocs (info
, h
,
8876 htab
->plt_entry_size
,
8877 htab
->plt_header_size
,
8883 /* Allocate space in .plt, .got and associated reloc sections for
8884 local ifunc dynamic relocs. */
8887 elfNN_aarch64_allocate_local_ifunc_dynrelocs (void **slot
, void *inf
)
8889 struct elf_link_hash_entry
*h
8890 = (struct elf_link_hash_entry
*) *slot
;
8892 if (h
->type
!= STT_GNU_IFUNC
8896 || h
->root
.type
!= bfd_link_hash_defined
)
8899 return elfNN_aarch64_allocate_ifunc_dynrelocs (h
, inf
);
8902 /* Set DF_TEXTREL if we find any dynamic relocs that apply to
8903 read-only sections. */
8906 maybe_set_textrel (struct elf_link_hash_entry
*h
, void *info_p
)
8910 if (h
->root
.type
== bfd_link_hash_indirect
)
8913 sec
= readonly_dynrelocs (h
);
8916 struct bfd_link_info
*info
= (struct bfd_link_info
*) info_p
;
8918 info
->flags
|= DF_TEXTREL
;
8919 info
->callbacks
->minfo
8920 (_("%pB: dynamic relocation against `%pT' in read-only section `%pA'\n"),
8921 sec
->owner
, h
->root
.root
.string
, sec
);
8923 /* Not an error, just cut short the traversal. */
8929 /* This is the most important function of all . Innocuosly named
8933 elfNN_aarch64_size_dynamic_sections (bfd
*output_bfd ATTRIBUTE_UNUSED
,
8934 struct bfd_link_info
*info
)
8936 struct elf_aarch64_link_hash_table
*htab
;
8942 htab
= elf_aarch64_hash_table ((info
));
8943 dynobj
= htab
->root
.dynobj
;
8945 BFD_ASSERT (dynobj
!= NULL
);
8947 if (htab
->root
.dynamic_sections_created
)
8949 if (bfd_link_executable (info
) && !info
->nointerp
)
8951 s
= bfd_get_linker_section (dynobj
, ".interp");
8954 s
->size
= sizeof ELF_DYNAMIC_INTERPRETER
;
8955 s
->contents
= (unsigned char *) ELF_DYNAMIC_INTERPRETER
;
8959 /* Set up .got offsets for local syms, and space for local dynamic
8961 for (ibfd
= info
->input_bfds
; ibfd
!= NULL
; ibfd
= ibfd
->link
.next
)
8963 struct elf_aarch64_local_symbol
*locals
= NULL
;
8964 Elf_Internal_Shdr
*symtab_hdr
;
8968 if (!is_aarch64_elf (ibfd
))
8971 for (s
= ibfd
->sections
; s
!= NULL
; s
= s
->next
)
8973 struct elf_dyn_relocs
*p
;
8975 for (p
= (struct elf_dyn_relocs
*)
8976 (elf_section_data (s
)->local_dynrel
); p
!= NULL
; p
= p
->next
)
8978 if (!bfd_is_abs_section (p
->sec
)
8979 && bfd_is_abs_section (p
->sec
->output_section
))
8981 /* Input section has been discarded, either because
8982 it is a copy of a linkonce section or due to
8983 linker script /DISCARD/, so we'll be discarding
8986 else if (p
->count
!= 0)
8988 srel
= elf_section_data (p
->sec
)->sreloc
;
8989 srel
->size
+= p
->count
* RELOC_SIZE (htab
);
8990 if ((p
->sec
->output_section
->flags
& SEC_READONLY
) != 0)
8991 info
->flags
|= DF_TEXTREL
;
8996 locals
= elf_aarch64_locals (ibfd
);
9000 symtab_hdr
= &elf_symtab_hdr (ibfd
);
9001 srel
= htab
->root
.srelgot
;
9002 for (i
= 0; i
< symtab_hdr
->sh_info
; i
++)
9004 locals
[i
].got_offset
= (bfd_vma
) - 1;
9005 locals
[i
].tlsdesc_got_jump_table_offset
= (bfd_vma
) - 1;
9006 if (locals
[i
].got_refcount
> 0)
9008 unsigned got_type
= locals
[i
].got_type
;
9009 if (got_type
& GOT_TLSDESC_GD
)
9011 locals
[i
].tlsdesc_got_jump_table_offset
=
9012 (htab
->root
.sgotplt
->size
9013 - aarch64_compute_jump_table_size (htab
));
9014 htab
->root
.sgotplt
->size
+= GOT_ENTRY_SIZE
* 2;
9015 locals
[i
].got_offset
= (bfd_vma
) - 2;
9018 if (got_type
& GOT_TLS_GD
)
9020 locals
[i
].got_offset
= htab
->root
.sgot
->size
;
9021 htab
->root
.sgot
->size
+= GOT_ENTRY_SIZE
* 2;
9024 if (got_type
& GOT_TLS_IE
9025 || got_type
& GOT_NORMAL
)
9027 locals
[i
].got_offset
= htab
->root
.sgot
->size
;
9028 htab
->root
.sgot
->size
+= GOT_ENTRY_SIZE
;
9031 if (got_type
== GOT_UNKNOWN
)
9035 if (bfd_link_pic (info
))
9037 if (got_type
& GOT_TLSDESC_GD
)
9039 htab
->root
.srelplt
->size
+= RELOC_SIZE (htab
);
9040 /* Note RELOC_COUNT not incremented here! */
9041 htab
->tlsdesc_plt
= (bfd_vma
) - 1;
9044 if (got_type
& GOT_TLS_GD
)
9045 htab
->root
.srelgot
->size
+= RELOC_SIZE (htab
) * 2;
9047 if (got_type
& GOT_TLS_IE
9048 || got_type
& GOT_NORMAL
)
9049 htab
->root
.srelgot
->size
+= RELOC_SIZE (htab
);
9054 locals
[i
].got_refcount
= (bfd_vma
) - 1;
9060 /* Allocate global sym .plt and .got entries, and space for global
9061 sym dynamic relocs. */
9062 elf_link_hash_traverse (&htab
->root
, elfNN_aarch64_allocate_dynrelocs
,
9065 /* Allocate global ifunc sym .plt and .got entries, and space for global
9066 ifunc sym dynamic relocs. */
9067 elf_link_hash_traverse (&htab
->root
, elfNN_aarch64_allocate_ifunc_dynrelocs
,
9070 /* Allocate .plt and .got entries, and space for local ifunc symbols. */
9071 htab_traverse (htab
->loc_hash_table
,
9072 elfNN_aarch64_allocate_local_ifunc_dynrelocs
,
9075 /* For every jump slot reserved in the sgotplt, reloc_count is
9076 incremented. However, when we reserve space for TLS descriptors,
9077 it's not incremented, so in order to compute the space reserved
9078 for them, it suffices to multiply the reloc count by the jump
9081 if (htab
->root
.srelplt
)
9082 htab
->sgotplt_jump_table_size
= aarch64_compute_jump_table_size (htab
);
9084 if (htab
->tlsdesc_plt
)
9086 if (htab
->root
.splt
->size
== 0)
9087 htab
->root
.splt
->size
+= htab
->plt_header_size
;
9089 /* If we're not using lazy TLS relocations, don't generate the
9090 GOT and PLT entry required. */
9091 if (!(info
->flags
& DF_BIND_NOW
))
9093 htab
->tlsdesc_plt
= htab
->root
.splt
->size
;
9094 htab
->root
.splt
->size
+= htab
->tlsdesc_plt_entry_size
;
9096 htab
->dt_tlsdesc_got
= htab
->root
.sgot
->size
;
9097 htab
->root
.sgot
->size
+= GOT_ENTRY_SIZE
;
9101 /* Init mapping symbols information to use later to distingush between
9102 code and data while scanning for errata. */
9103 if (htab
->fix_erratum_835769
|| htab
->fix_erratum_843419
)
9104 for (ibfd
= info
->input_bfds
; ibfd
!= NULL
; ibfd
= ibfd
->link
.next
)
9106 if (!is_aarch64_elf (ibfd
))
9108 bfd_elfNN_aarch64_init_maps (ibfd
);
9111 /* We now have determined the sizes of the various dynamic sections.
9112 Allocate memory for them. */
9114 for (s
= dynobj
->sections
; s
!= NULL
; s
= s
->next
)
9116 if ((s
->flags
& SEC_LINKER_CREATED
) == 0)
9119 if (s
== htab
->root
.splt
9120 || s
== htab
->root
.sgot
9121 || s
== htab
->root
.sgotplt
9122 || s
== htab
->root
.iplt
9123 || s
== htab
->root
.igotplt
9124 || s
== htab
->root
.sdynbss
9125 || s
== htab
->root
.sdynrelro
)
9127 /* Strip this section if we don't need it; see the
9130 else if (CONST_STRNEQ (bfd_section_name (s
), ".rela"))
9132 if (s
->size
!= 0 && s
!= htab
->root
.srelplt
)
9135 /* We use the reloc_count field as a counter if we need
9136 to copy relocs into the output file. */
9137 if (s
!= htab
->root
.srelplt
)
9142 /* It's not one of our sections, so don't allocate space. */
9148 /* If we don't need this section, strip it from the
9149 output file. This is mostly to handle .rela.bss and
9150 .rela.plt. We must create both sections in
9151 create_dynamic_sections, because they must be created
9152 before the linker maps input sections to output
9153 sections. The linker does that before
9154 adjust_dynamic_symbol is called, and it is that
9155 function which decides whether anything needs to go
9156 into these sections. */
9157 s
->flags
|= SEC_EXCLUDE
;
9161 if ((s
->flags
& SEC_HAS_CONTENTS
) == 0)
9164 /* Allocate memory for the section contents. We use bfd_zalloc
9165 here in case unused entries are not reclaimed before the
9166 section's contents are written out. This should not happen,
9167 but this way if it does, we get a R_AARCH64_NONE reloc instead
9169 s
->contents
= (bfd_byte
*) bfd_zalloc (dynobj
, s
->size
);
9170 if (s
->contents
== NULL
)
9174 if (htab
->root
.dynamic_sections_created
)
9176 /* Add some entries to the .dynamic section. We fill in the
9177 values later, in elfNN_aarch64_finish_dynamic_sections, but we
9178 must add the entries now so that we get the correct size for
9179 the .dynamic section. The DT_DEBUG entry is filled in by the
9180 dynamic linker and used by the debugger. */
9181 #define add_dynamic_entry(TAG, VAL) \
9182 _bfd_elf_add_dynamic_entry (info, TAG, VAL)
9184 if (bfd_link_executable (info
))
9186 if (!add_dynamic_entry (DT_DEBUG
, 0))
9190 if (htab
->root
.splt
->size
!= 0)
9192 if (!add_dynamic_entry (DT_PLTGOT
, 0)
9193 || !add_dynamic_entry (DT_PLTRELSZ
, 0)
9194 || !add_dynamic_entry (DT_PLTREL
, DT_RELA
)
9195 || !add_dynamic_entry (DT_JMPREL
, 0))
9198 if (htab
->variant_pcs
9199 && !add_dynamic_entry (DT_AARCH64_VARIANT_PCS
, 0))
9202 if (htab
->tlsdesc_plt
9203 && !(info
->flags
& DF_BIND_NOW
)
9204 && (!add_dynamic_entry (DT_TLSDESC_PLT
, 0)
9205 || !add_dynamic_entry (DT_TLSDESC_GOT
, 0)))
9208 if ((elf_aarch64_tdata (output_bfd
)->plt_type
== PLT_BTI_PAC
)
9209 && (!add_dynamic_entry (DT_AARCH64_BTI_PLT
, 0)
9210 || !add_dynamic_entry (DT_AARCH64_PAC_PLT
, 0)))
9213 else if ((elf_aarch64_tdata (output_bfd
)->plt_type
== PLT_BTI
)
9214 && !add_dynamic_entry (DT_AARCH64_BTI_PLT
, 0))
9217 else if ((elf_aarch64_tdata (output_bfd
)->plt_type
== PLT_PAC
)
9218 && !add_dynamic_entry (DT_AARCH64_PAC_PLT
, 0))
9224 if (!add_dynamic_entry (DT_RELA
, 0)
9225 || !add_dynamic_entry (DT_RELASZ
, 0)
9226 || !add_dynamic_entry (DT_RELAENT
, RELOC_SIZE (htab
)))
9229 /* If any dynamic relocs apply to a read-only section,
9230 then we need a DT_TEXTREL entry. */
9231 if ((info
->flags
& DF_TEXTREL
) == 0)
9232 elf_link_hash_traverse (&htab
->root
, maybe_set_textrel
, info
);
9234 if ((info
->flags
& DF_TEXTREL
) != 0)
9236 if (!add_dynamic_entry (DT_TEXTREL
, 0))
9241 #undef add_dynamic_entry
9247 elf_aarch64_update_plt_entry (bfd
*output_bfd
,
9248 bfd_reloc_code_real_type r_type
,
9249 bfd_byte
*plt_entry
, bfd_vma value
)
9251 reloc_howto_type
*howto
= elfNN_aarch64_howto_from_bfd_reloc (r_type
);
9253 /* FIXME: We should check the return value from this function call. */
9254 (void) _bfd_aarch64_elf_put_addend (output_bfd
, plt_entry
, r_type
, howto
, value
);
9258 elfNN_aarch64_create_small_pltn_entry (struct elf_link_hash_entry
*h
,
9259 struct elf_aarch64_link_hash_table
9260 *htab
, bfd
*output_bfd
,
9261 struct bfd_link_info
*info
)
9263 bfd_byte
*plt_entry
;
9266 bfd_vma gotplt_entry_address
;
9267 bfd_vma plt_entry_address
;
9268 Elf_Internal_Rela rela
;
9270 asection
*plt
, *gotplt
, *relplt
;
9272 /* When building a static executable, use .iplt, .igot.plt and
9273 .rela.iplt sections for STT_GNU_IFUNC symbols. */
9274 if (htab
->root
.splt
!= NULL
)
9276 plt
= htab
->root
.splt
;
9277 gotplt
= htab
->root
.sgotplt
;
9278 relplt
= htab
->root
.srelplt
;
9282 plt
= htab
->root
.iplt
;
9283 gotplt
= htab
->root
.igotplt
;
9284 relplt
= htab
->root
.irelplt
;
9287 /* Get the index in the procedure linkage table which
9288 corresponds to this symbol. This is the index of this symbol
9289 in all the symbols for which we are making plt entries. The
9290 first entry in the procedure linkage table is reserved.
9292 Get the offset into the .got table of the entry that
9293 corresponds to this function. Each .got entry is GOT_ENTRY_SIZE
9294 bytes. The first three are reserved for the dynamic linker.
9296 For static executables, we don't reserve anything. */
9298 if (plt
== htab
->root
.splt
)
9300 plt_index
= (h
->plt
.offset
- htab
->plt_header_size
) / htab
->plt_entry_size
;
9301 got_offset
= (plt_index
+ 3) * GOT_ENTRY_SIZE
;
9305 plt_index
= h
->plt
.offset
/ htab
->plt_entry_size
;
9306 got_offset
= plt_index
* GOT_ENTRY_SIZE
;
9309 plt_entry
= plt
->contents
+ h
->plt
.offset
;
9310 plt_entry_address
= plt
->output_section
->vma
9311 + plt
->output_offset
+ h
->plt
.offset
;
9312 gotplt_entry_address
= gotplt
->output_section
->vma
+
9313 gotplt
->output_offset
+ got_offset
;
9315 /* Copy in the boiler-plate for the PLTn entry. */
9316 memcpy (plt_entry
, htab
->plt_entry
, htab
->plt_entry_size
);
9318 /* First instruction in BTI enabled PLT stub is a BTI
9319 instruction so skip it. */
9320 if (elf_aarch64_tdata (output_bfd
)->plt_type
& PLT_BTI
9321 && elf_elfheader (output_bfd
)->e_type
== ET_EXEC
)
9322 plt_entry
= plt_entry
+ 4;
9324 /* Fill in the top 21 bits for this: ADRP x16, PLT_GOT + n * 8.
9325 ADRP: ((PG(S+A)-PG(P)) >> 12) & 0x1fffff */
9326 elf_aarch64_update_plt_entry (output_bfd
, BFD_RELOC_AARCH64_ADR_HI21_PCREL
,
9328 PG (gotplt_entry_address
) -
9329 PG (plt_entry_address
));
9331 /* Fill in the lo12 bits for the load from the pltgot. */
9332 elf_aarch64_update_plt_entry (output_bfd
, BFD_RELOC_AARCH64_LDSTNN_LO12
,
9334 PG_OFFSET (gotplt_entry_address
));
9336 /* Fill in the lo12 bits for the add from the pltgot entry. */
9337 elf_aarch64_update_plt_entry (output_bfd
, BFD_RELOC_AARCH64_ADD_LO12
,
9339 PG_OFFSET (gotplt_entry_address
));
9341 /* All the GOTPLT Entries are essentially initialized to PLT0. */
9342 bfd_put_NN (output_bfd
,
9343 plt
->output_section
->vma
+ plt
->output_offset
,
9344 gotplt
->contents
+ got_offset
);
9346 rela
.r_offset
= gotplt_entry_address
;
9348 if (h
->dynindx
== -1
9349 || ((bfd_link_executable (info
)
9350 || ELF_ST_VISIBILITY (h
->other
) != STV_DEFAULT
)
9352 && h
->type
== STT_GNU_IFUNC
))
9354 /* If an STT_GNU_IFUNC symbol is locally defined, generate
9355 R_AARCH64_IRELATIVE instead of R_AARCH64_JUMP_SLOT. */
9356 rela
.r_info
= ELFNN_R_INFO (0, AARCH64_R (IRELATIVE
));
9357 rela
.r_addend
= (h
->root
.u
.def
.value
9358 + h
->root
.u
.def
.section
->output_section
->vma
9359 + h
->root
.u
.def
.section
->output_offset
);
9363 /* Fill in the entry in the .rela.plt section. */
9364 rela
.r_info
= ELFNN_R_INFO (h
->dynindx
, AARCH64_R (JUMP_SLOT
));
9368 /* Compute the relocation entry to used based on PLT index and do
9369 not adjust reloc_count. The reloc_count has already been adjusted
9370 to account for this entry. */
9371 loc
= relplt
->contents
+ plt_index
* RELOC_SIZE (htab
);
9372 bfd_elfNN_swap_reloca_out (output_bfd
, &rela
, loc
);
9375 /* Size sections even though they're not dynamic. We use it to setup
9376 _TLS_MODULE_BASE_, if needed. */
9379 elfNN_aarch64_always_size_sections (bfd
*output_bfd
,
9380 struct bfd_link_info
*info
)
9384 if (bfd_link_relocatable (info
))
9387 tls_sec
= elf_hash_table (info
)->tls_sec
;
9391 struct elf_link_hash_entry
*tlsbase
;
9393 tlsbase
= elf_link_hash_lookup (elf_hash_table (info
),
9394 "_TLS_MODULE_BASE_", TRUE
, TRUE
, FALSE
);
9398 struct bfd_link_hash_entry
*h
= NULL
;
9399 const struct elf_backend_data
*bed
=
9400 get_elf_backend_data (output_bfd
);
9402 if (!(_bfd_generic_link_add_one_symbol
9403 (info
, output_bfd
, "_TLS_MODULE_BASE_", BSF_LOCAL
,
9404 tls_sec
, 0, NULL
, FALSE
, bed
->collect
, &h
)))
9407 tlsbase
->type
= STT_TLS
;
9408 tlsbase
= (struct elf_link_hash_entry
*) h
;
9409 tlsbase
->def_regular
= 1;
9410 tlsbase
->other
= STV_HIDDEN
;
9411 (*bed
->elf_backend_hide_symbol
) (info
, tlsbase
, TRUE
);
9418 /* Finish up dynamic symbol handling. We set the contents of various
9419 dynamic sections here. */
9422 elfNN_aarch64_finish_dynamic_symbol (bfd
*output_bfd
,
9423 struct bfd_link_info
*info
,
9424 struct elf_link_hash_entry
*h
,
9425 Elf_Internal_Sym
*sym
)
9427 struct elf_aarch64_link_hash_table
*htab
;
9428 htab
= elf_aarch64_hash_table (info
);
9430 if (h
->plt
.offset
!= (bfd_vma
) - 1)
9432 asection
*plt
, *gotplt
, *relplt
;
9434 /* This symbol has an entry in the procedure linkage table. Set
9437 /* When building a static executable, use .iplt, .igot.plt and
9438 .rela.iplt sections for STT_GNU_IFUNC symbols. */
9439 if (htab
->root
.splt
!= NULL
)
9441 plt
= htab
->root
.splt
;
9442 gotplt
= htab
->root
.sgotplt
;
9443 relplt
= htab
->root
.srelplt
;
9447 plt
= htab
->root
.iplt
;
9448 gotplt
= htab
->root
.igotplt
;
9449 relplt
= htab
->root
.irelplt
;
9452 /* This symbol has an entry in the procedure linkage table. Set
9454 if ((h
->dynindx
== -1
9455 && !((h
->forced_local
|| bfd_link_executable (info
))
9457 && h
->type
== STT_GNU_IFUNC
))
9463 elfNN_aarch64_create_small_pltn_entry (h
, htab
, output_bfd
, info
);
9464 if (!h
->def_regular
)
9466 /* Mark the symbol as undefined, rather than as defined in
9467 the .plt section. */
9468 sym
->st_shndx
= SHN_UNDEF
;
9469 /* If the symbol is weak we need to clear the value.
9470 Otherwise, the PLT entry would provide a definition for
9471 the symbol even if the symbol wasn't defined anywhere,
9472 and so the symbol would never be NULL. Leave the value if
9473 there were any relocations where pointer equality matters
9474 (this is a clue for the dynamic linker, to make function
9475 pointer comparisons work between an application and shared
9477 if (!h
->ref_regular_nonweak
|| !h
->pointer_equality_needed
)
9482 if (h
->got
.offset
!= (bfd_vma
) - 1
9483 && elf_aarch64_hash_entry (h
)->got_type
== GOT_NORMAL
9484 /* Undefined weak symbol in static PIE resolves to 0 without
9485 any dynamic relocations. */
9486 && !UNDEFWEAK_NO_DYNAMIC_RELOC (info
, h
))
9488 Elf_Internal_Rela rela
;
9491 /* This symbol has an entry in the global offset table. Set it
9493 if (htab
->root
.sgot
== NULL
|| htab
->root
.srelgot
== NULL
)
9496 rela
.r_offset
= (htab
->root
.sgot
->output_section
->vma
9497 + htab
->root
.sgot
->output_offset
9498 + (h
->got
.offset
& ~(bfd_vma
) 1));
9501 && h
->type
== STT_GNU_IFUNC
)
9503 if (bfd_link_pic (info
))
9505 /* Generate R_AARCH64_GLOB_DAT. */
9512 if (!h
->pointer_equality_needed
)
9515 /* For non-shared object, we can't use .got.plt, which
9516 contains the real function address if we need pointer
9517 equality. We load the GOT entry with the PLT entry. */
9518 plt
= htab
->root
.splt
? htab
->root
.splt
: htab
->root
.iplt
;
9519 bfd_put_NN (output_bfd
, (plt
->output_section
->vma
9520 + plt
->output_offset
9522 htab
->root
.sgot
->contents
9523 + (h
->got
.offset
& ~(bfd_vma
) 1));
9527 else if (bfd_link_pic (info
) && SYMBOL_REFERENCES_LOCAL (info
, h
))
9529 if (!(h
->def_regular
|| ELF_COMMON_DEF_P (h
)))
9532 BFD_ASSERT ((h
->got
.offset
& 1) != 0);
9533 rela
.r_info
= ELFNN_R_INFO (0, AARCH64_R (RELATIVE
));
9534 rela
.r_addend
= (h
->root
.u
.def
.value
9535 + h
->root
.u
.def
.section
->output_section
->vma
9536 + h
->root
.u
.def
.section
->output_offset
);
9541 BFD_ASSERT ((h
->got
.offset
& 1) == 0);
9542 bfd_put_NN (output_bfd
, (bfd_vma
) 0,
9543 htab
->root
.sgot
->contents
+ h
->got
.offset
);
9544 rela
.r_info
= ELFNN_R_INFO (h
->dynindx
, AARCH64_R (GLOB_DAT
));
9548 loc
= htab
->root
.srelgot
->contents
;
9549 loc
+= htab
->root
.srelgot
->reloc_count
++ * RELOC_SIZE (htab
);
9550 bfd_elfNN_swap_reloca_out (output_bfd
, &rela
, loc
);
9555 Elf_Internal_Rela rela
;
9559 /* This symbol needs a copy reloc. Set it up. */
9560 if (h
->dynindx
== -1
9561 || (h
->root
.type
!= bfd_link_hash_defined
9562 && h
->root
.type
!= bfd_link_hash_defweak
)
9563 || htab
->root
.srelbss
== NULL
)
9566 rela
.r_offset
= (h
->root
.u
.def
.value
9567 + h
->root
.u
.def
.section
->output_section
->vma
9568 + h
->root
.u
.def
.section
->output_offset
);
9569 rela
.r_info
= ELFNN_R_INFO (h
->dynindx
, AARCH64_R (COPY
));
9571 if (h
->root
.u
.def
.section
== htab
->root
.sdynrelro
)
9572 s
= htab
->root
.sreldynrelro
;
9574 s
= htab
->root
.srelbss
;
9575 loc
= s
->contents
+ s
->reloc_count
++ * RELOC_SIZE (htab
);
9576 bfd_elfNN_swap_reloca_out (output_bfd
, &rela
, loc
);
9579 /* Mark _DYNAMIC and _GLOBAL_OFFSET_TABLE_ as absolute. SYM may
9580 be NULL for local symbols. */
9582 && (h
== elf_hash_table (info
)->hdynamic
9583 || h
== elf_hash_table (info
)->hgot
))
9584 sym
->st_shndx
= SHN_ABS
;
9589 /* Finish up local dynamic symbol handling. We set the contents of
9590 various dynamic sections here. */
9593 elfNN_aarch64_finish_local_dynamic_symbol (void **slot
, void *inf
)
9595 struct elf_link_hash_entry
*h
9596 = (struct elf_link_hash_entry
*) *slot
;
9597 struct bfd_link_info
*info
9598 = (struct bfd_link_info
*) inf
;
9600 return elfNN_aarch64_finish_dynamic_symbol (info
->output_bfd
,
9605 elfNN_aarch64_init_small_plt0_entry (bfd
*output_bfd ATTRIBUTE_UNUSED
,
9606 struct elf_aarch64_link_hash_table
9609 /* Fill in PLT0. Fixme:RR Note this doesn't distinguish between
9610 small and large plts and at the minute just generates
9613 /* PLT0 of the small PLT looks like this in ELF64 -
9614 stp x16, x30, [sp, #-16]! // Save the reloc and lr on stack.
9615 adrp x16, PLT_GOT + 16 // Get the page base of the GOTPLT
9616 ldr x17, [x16, #:lo12:PLT_GOT+16] // Load the address of the
9618 add x16, x16, #:lo12:PLT_GOT+16 // Load the lo12 bits of the
9619 // GOTPLT entry for this.
9621 PLT0 will be slightly different in ELF32 due to different got entry
9623 bfd_vma plt_got_2nd_ent
; /* Address of GOT[2]. */
9627 memcpy (htab
->root
.splt
->contents
, htab
->plt0_entry
,
9628 htab
->plt_header_size
);
9629 elf_section_data (htab
->root
.splt
->output_section
)->this_hdr
.sh_entsize
=
9630 htab
->plt_header_size
;
9632 plt_got_2nd_ent
= (htab
->root
.sgotplt
->output_section
->vma
9633 + htab
->root
.sgotplt
->output_offset
9634 + GOT_ENTRY_SIZE
* 2);
9636 plt_base
= htab
->root
.splt
->output_section
->vma
+
9637 htab
->root
.splt
->output_offset
;
9639 /* First instruction in BTI enabled PLT stub is a BTI
9640 instruction so skip it. */
9641 bfd_byte
*plt0_entry
= htab
->root
.splt
->contents
;
9642 if (elf_aarch64_tdata (output_bfd
)->plt_type
& PLT_BTI
)
9643 plt0_entry
= plt0_entry
+ 4;
9645 /* Fill in the top 21 bits for this: ADRP x16, PLT_GOT + n * 8.
9646 ADRP: ((PG(S+A)-PG(P)) >> 12) & 0x1fffff */
9647 elf_aarch64_update_plt_entry (output_bfd
, BFD_RELOC_AARCH64_ADR_HI21_PCREL
,
9649 PG (plt_got_2nd_ent
) - PG (plt_base
+ 4));
9651 elf_aarch64_update_plt_entry (output_bfd
, BFD_RELOC_AARCH64_LDSTNN_LO12
,
9653 PG_OFFSET (plt_got_2nd_ent
));
9655 elf_aarch64_update_plt_entry (output_bfd
, BFD_RELOC_AARCH64_ADD_LO12
,
9657 PG_OFFSET (plt_got_2nd_ent
));
9661 elfNN_aarch64_finish_dynamic_sections (bfd
*output_bfd
,
9662 struct bfd_link_info
*info
)
9664 struct elf_aarch64_link_hash_table
*htab
;
9668 htab
= elf_aarch64_hash_table (info
);
9669 dynobj
= htab
->root
.dynobj
;
9670 sdyn
= bfd_get_linker_section (dynobj
, ".dynamic");
9672 if (htab
->root
.dynamic_sections_created
)
9674 ElfNN_External_Dyn
*dyncon
, *dynconend
;
9676 if (sdyn
== NULL
|| htab
->root
.sgot
== NULL
)
9679 dyncon
= (ElfNN_External_Dyn
*) sdyn
->contents
;
9680 dynconend
= (ElfNN_External_Dyn
*) (sdyn
->contents
+ sdyn
->size
);
9681 for (; dyncon
< dynconend
; dyncon
++)
9683 Elf_Internal_Dyn dyn
;
9686 bfd_elfNN_swap_dyn_in (dynobj
, dyncon
, &dyn
);
9694 s
= htab
->root
.sgotplt
;
9695 dyn
.d_un
.d_ptr
= s
->output_section
->vma
+ s
->output_offset
;
9699 s
= htab
->root
.srelplt
;
9700 dyn
.d_un
.d_ptr
= s
->output_section
->vma
+ s
->output_offset
;
9704 s
= htab
->root
.srelplt
;
9705 dyn
.d_un
.d_val
= s
->size
;
9708 case DT_TLSDESC_PLT
:
9709 s
= htab
->root
.splt
;
9710 dyn
.d_un
.d_ptr
= s
->output_section
->vma
+ s
->output_offset
9711 + htab
->tlsdesc_plt
;
9714 case DT_TLSDESC_GOT
:
9715 s
= htab
->root
.sgot
;
9716 BFD_ASSERT (htab
->dt_tlsdesc_got
!= (bfd_vma
)-1);
9717 dyn
.d_un
.d_ptr
= s
->output_section
->vma
+ s
->output_offset
9718 + htab
->dt_tlsdesc_got
;
9722 bfd_elfNN_swap_dyn_out (output_bfd
, &dyn
, dyncon
);
9727 /* Fill in the special first entry in the procedure linkage table. */
9728 if (htab
->root
.splt
&& htab
->root
.splt
->size
> 0)
9730 elfNN_aarch64_init_small_plt0_entry (output_bfd
, htab
);
9732 elf_section_data (htab
->root
.splt
->output_section
)->
9733 this_hdr
.sh_entsize
= htab
->plt_entry_size
;
9736 if (htab
->tlsdesc_plt
&& !(info
->flags
& DF_BIND_NOW
))
9738 BFD_ASSERT (htab
->dt_tlsdesc_got
!= (bfd_vma
)-1);
9739 bfd_put_NN (output_bfd
, (bfd_vma
) 0,
9740 htab
->root
.sgot
->contents
+ htab
->dt_tlsdesc_got
);
9742 const bfd_byte
*entry
= elfNN_aarch64_tlsdesc_small_plt_entry
;
9743 htab
->tlsdesc_plt_entry_size
= PLT_TLSDESC_ENTRY_SIZE
;
9745 aarch64_plt_type type
= elf_aarch64_tdata (output_bfd
)->plt_type
;
9746 if (type
== PLT_BTI
|| type
== PLT_BTI_PAC
)
9748 entry
= elfNN_aarch64_tlsdesc_small_plt_bti_entry
;
9751 memcpy (htab
->root
.splt
->contents
+ htab
->tlsdesc_plt
,
9752 entry
, htab
->tlsdesc_plt_entry_size
);
9755 bfd_vma adrp1_addr
=
9756 htab
->root
.splt
->output_section
->vma
9757 + htab
->root
.splt
->output_offset
+ htab
->tlsdesc_plt
+ 4;
9759 bfd_vma adrp2_addr
= adrp1_addr
+ 4;
9762 htab
->root
.sgot
->output_section
->vma
9763 + htab
->root
.sgot
->output_offset
;
9765 bfd_vma pltgot_addr
=
9766 htab
->root
.sgotplt
->output_section
->vma
9767 + htab
->root
.sgotplt
->output_offset
;
9769 bfd_vma dt_tlsdesc_got
= got_addr
+ htab
->dt_tlsdesc_got
;
9771 bfd_byte
*plt_entry
=
9772 htab
->root
.splt
->contents
+ htab
->tlsdesc_plt
;
9774 /* First instruction in BTI enabled PLT stub is a BTI
9775 instruction so skip it. */
9778 plt_entry
= plt_entry
+ 4;
9779 adrp1_addr
= adrp1_addr
+ 4;
9780 adrp2_addr
= adrp2_addr
+ 4;
9783 /* adrp x2, DT_TLSDESC_GOT */
9784 elf_aarch64_update_plt_entry (output_bfd
,
9785 BFD_RELOC_AARCH64_ADR_HI21_PCREL
,
9787 (PG (dt_tlsdesc_got
)
9788 - PG (adrp1_addr
)));
9791 elf_aarch64_update_plt_entry (output_bfd
,
9792 BFD_RELOC_AARCH64_ADR_HI21_PCREL
,
9795 - PG (adrp2_addr
)));
9797 /* ldr x2, [x2, #0] */
9798 elf_aarch64_update_plt_entry (output_bfd
,
9799 BFD_RELOC_AARCH64_LDSTNN_LO12
,
9801 PG_OFFSET (dt_tlsdesc_got
));
9804 elf_aarch64_update_plt_entry (output_bfd
,
9805 BFD_RELOC_AARCH64_ADD_LO12
,
9807 PG_OFFSET (pltgot_addr
));
9812 if (htab
->root
.sgotplt
)
9814 if (bfd_is_abs_section (htab
->root
.sgotplt
->output_section
))
9817 (_("discarded output section: `%pA'"), htab
->root
.sgotplt
);
9821 /* Fill in the first three entries in the global offset table. */
9822 if (htab
->root
.sgotplt
->size
> 0)
9824 bfd_put_NN (output_bfd
, (bfd_vma
) 0, htab
->root
.sgotplt
->contents
);
9826 /* Write GOT[1] and GOT[2], needed for the dynamic linker. */
9827 bfd_put_NN (output_bfd
,
9829 htab
->root
.sgotplt
->contents
+ GOT_ENTRY_SIZE
);
9830 bfd_put_NN (output_bfd
,
9832 htab
->root
.sgotplt
->contents
+ GOT_ENTRY_SIZE
* 2);
9835 if (htab
->root
.sgot
)
9837 if (htab
->root
.sgot
->size
> 0)
9840 sdyn
? sdyn
->output_section
->vma
+ sdyn
->output_offset
: 0;
9841 bfd_put_NN (output_bfd
, addr
, htab
->root
.sgot
->contents
);
9845 elf_section_data (htab
->root
.sgotplt
->output_section
)->
9846 this_hdr
.sh_entsize
= GOT_ENTRY_SIZE
;
9849 if (htab
->root
.sgot
&& htab
->root
.sgot
->size
> 0)
9850 elf_section_data (htab
->root
.sgot
->output_section
)->this_hdr
.sh_entsize
9853 /* Fill PLT and GOT entries for local STT_GNU_IFUNC symbols. */
9854 htab_traverse (htab
->loc_hash_table
,
9855 elfNN_aarch64_finish_local_dynamic_symbol
,
9861 /* Check if BTI enabled PLTs are needed. Returns the type needed. */
9862 static aarch64_plt_type
9863 get_plt_type (bfd
*abfd
)
9865 aarch64_plt_type ret
= PLT_NORMAL
;
9866 bfd_byte
*contents
, *extdyn
, *extdynend
;
9867 asection
*sec
= bfd_get_section_by_name (abfd
, ".dynamic");
9868 if (!sec
|| !bfd_malloc_and_get_section (abfd
, sec
, &contents
))
9871 extdynend
= contents
+ sec
->size
;
9872 for (; extdyn
< extdynend
; extdyn
+= sizeof (ElfNN_External_Dyn
))
9874 Elf_Internal_Dyn dyn
;
9875 bfd_elfNN_swap_dyn_in (abfd
, extdyn
, &dyn
);
9877 /* Let's check the processor specific dynamic array tags. */
9878 bfd_vma tag
= dyn
.d_tag
;
9879 if (tag
< DT_LOPROC
|| tag
> DT_HIPROC
)
9884 case DT_AARCH64_BTI_PLT
:
9888 case DT_AARCH64_PAC_PLT
:
9900 elfNN_aarch64_get_synthetic_symtab (bfd
*abfd
,
9907 elf_aarch64_tdata (abfd
)->plt_type
= get_plt_type (abfd
);
9908 return _bfd_elf_get_synthetic_symtab (abfd
, symcount
, syms
,
9909 dynsymcount
, dynsyms
, ret
);
9912 /* Return address for Ith PLT stub in section PLT, for relocation REL
9913 or (bfd_vma) -1 if it should not be included. */
9916 elfNN_aarch64_plt_sym_val (bfd_vma i
, const asection
*plt
,
9917 const arelent
*rel ATTRIBUTE_UNUSED
)
9919 size_t plt0_size
= PLT_ENTRY_SIZE
;
9920 size_t pltn_size
= PLT_SMALL_ENTRY_SIZE
;
9922 if (elf_aarch64_tdata (plt
->owner
)->plt_type
== PLT_BTI_PAC
)
9924 if (elf_elfheader (plt
->owner
)->e_type
== ET_EXEC
)
9925 pltn_size
= PLT_BTI_PAC_SMALL_ENTRY_SIZE
;
9927 pltn_size
= PLT_PAC_SMALL_ENTRY_SIZE
;
9929 else if (elf_aarch64_tdata (plt
->owner
)->plt_type
== PLT_BTI
)
9931 if (elf_elfheader (plt
->owner
)->e_type
== ET_EXEC
)
9932 pltn_size
= PLT_BTI_SMALL_ENTRY_SIZE
;
9934 else if (elf_aarch64_tdata (plt
->owner
)->plt_type
== PLT_PAC
)
9936 pltn_size
= PLT_PAC_SMALL_ENTRY_SIZE
;
9939 return plt
->vma
+ plt0_size
+ i
* pltn_size
;
9942 /* Returns TRUE if NAME is an AArch64 mapping symbol.
9943 The ARM ELF standard defines $x (for A64 code) and $d (for data).
9944 It also allows a period initiated suffix to be added to the symbol, ie:
9945 "$[adtx]\.[:sym_char]+". */
9948 is_aarch64_mapping_symbol (const char * name
)
9950 return name
!= NULL
/* Paranoia. */
9951 && name
[0] == '$' /* Note: if objcopy --prefix-symbols has been used then
9952 the mapping symbols could have acquired a prefix.
9953 We do not support this here, since such symbols no
9954 longer conform to the ARM ELF ABI. */
9955 && (name
[1] == 'd' || name
[1] == 'x')
9956 && (name
[2] == 0 || name
[2] == '.');
9957 /* FIXME: Strictly speaking the symbol is only a valid mapping symbol if
9958 any characters that follow the period are legal characters for the body
9959 of a symbol's name. For now we just assume that this is the case. */
9962 /* Make sure that mapping symbols in object files are not removed via the
9963 "strip --strip-unneeded" tool. These symbols might needed in order to
9964 correctly generate linked files. Once an object file has been linked,
9965 it should be safe to remove them. */
9968 elfNN_aarch64_backend_symbol_processing (bfd
*abfd
, asymbol
*sym
)
9970 if (((abfd
->flags
& (EXEC_P
| DYNAMIC
)) == 0)
9971 && sym
->section
!= bfd_abs_section_ptr
9972 && is_aarch64_mapping_symbol (sym
->name
))
9973 sym
->flags
|= BSF_KEEP
;
9976 /* Implement elf_backend_setup_gnu_properties for AArch64. It serves as a
9977 wrapper function for _bfd_aarch64_elf_link_setup_gnu_properties to account
9978 for the effect of GNU properties of the output_bfd. */
9980 elfNN_aarch64_link_setup_gnu_properties (struct bfd_link_info
*info
)
9982 uint32_t prop
= elf_aarch64_tdata (info
->output_bfd
)->gnu_and_prop
;
9983 bfd
*pbfd
= _bfd_aarch64_elf_link_setup_gnu_properties (info
, &prop
);
9984 elf_aarch64_tdata (info
->output_bfd
)->gnu_and_prop
= prop
;
9985 elf_aarch64_tdata (info
->output_bfd
)->plt_type
9986 |= (prop
& GNU_PROPERTY_AARCH64_FEATURE_1_BTI
) ? PLT_BTI
: 0;
9987 setup_plt_values (info
, elf_aarch64_tdata (info
->output_bfd
)->plt_type
);
9991 /* Implement elf_backend_merge_gnu_properties for AArch64. It serves as a
9992 wrapper function for _bfd_aarch64_elf_merge_gnu_properties to account
9993 for the effect of GNU properties of the output_bfd. */
9995 elfNN_aarch64_merge_gnu_properties (struct bfd_link_info
*info
,
9996 bfd
*abfd
, bfd
*bbfd
,
9997 elf_property
*aprop
,
9998 elf_property
*bprop
)
10001 = elf_aarch64_tdata (info
->output_bfd
)->gnu_and_prop
;
10003 /* If output has been marked with BTI using command line argument, give out
10004 warning if necessary. */
10005 /* Properties are merged per type, hence only check for warnings when merging
10006 GNU_PROPERTY_AARCH64_FEATURE_1_AND. */
10007 if (((aprop
&& aprop
->pr_type
== GNU_PROPERTY_AARCH64_FEATURE_1_AND
)
10008 || (bprop
&& bprop
->pr_type
== GNU_PROPERTY_AARCH64_FEATURE_1_AND
))
10009 && (prop
& GNU_PROPERTY_AARCH64_FEATURE_1_BTI
)
10010 && (!elf_aarch64_tdata (info
->output_bfd
)->no_bti_warn
))
10012 if ((aprop
&& !(aprop
->u
.number
& GNU_PROPERTY_AARCH64_FEATURE_1_BTI
))
10015 _bfd_error_handler (_("%pB: warning: BTI turned on by -z force-bti when "
10016 "all inputs do not have BTI in NOTE section."),
10019 if ((bprop
&& !(bprop
->u
.number
& GNU_PROPERTY_AARCH64_FEATURE_1_BTI
))
10022 _bfd_error_handler (_("%pB: warning: BTI turned on by -z force-bti when "
10023 "all inputs do not have BTI in NOTE section."),
10028 return _bfd_aarch64_elf_merge_gnu_properties (info
, abfd
, aprop
,
10032 /* We use this so we can override certain functions
10033 (though currently we don't). */
10035 const struct elf_size_info elfNN_aarch64_size_info
=
10037 sizeof (ElfNN_External_Ehdr
),
10038 sizeof (ElfNN_External_Phdr
),
10039 sizeof (ElfNN_External_Shdr
),
10040 sizeof (ElfNN_External_Rel
),
10041 sizeof (ElfNN_External_Rela
),
10042 sizeof (ElfNN_External_Sym
),
10043 sizeof (ElfNN_External_Dyn
),
10044 sizeof (Elf_External_Note
),
10045 4, /* Hash table entry size. */
10046 1, /* Internal relocs per external relocs. */
10047 ARCH_SIZE
, /* Arch size. */
10048 LOG_FILE_ALIGN
, /* Log_file_align. */
10049 ELFCLASSNN
, EV_CURRENT
,
10050 bfd_elfNN_write_out_phdrs
,
10051 bfd_elfNN_write_shdrs_and_ehdr
,
10052 bfd_elfNN_checksum_contents
,
10053 bfd_elfNN_write_relocs
,
10054 bfd_elfNN_swap_symbol_in
,
10055 bfd_elfNN_swap_symbol_out
,
10056 bfd_elfNN_slurp_reloc_table
,
10057 bfd_elfNN_slurp_symbol_table
,
10058 bfd_elfNN_swap_dyn_in
,
10059 bfd_elfNN_swap_dyn_out
,
10060 bfd_elfNN_swap_reloc_in
,
10061 bfd_elfNN_swap_reloc_out
,
10062 bfd_elfNN_swap_reloca_in
,
10063 bfd_elfNN_swap_reloca_out
10066 #define ELF_ARCH bfd_arch_aarch64
10067 #define ELF_MACHINE_CODE EM_AARCH64
10068 #define ELF_MAXPAGESIZE 0x10000
10069 #define ELF_MINPAGESIZE 0x1000
10070 #define ELF_COMMONPAGESIZE 0x1000
10072 #define bfd_elfNN_close_and_cleanup \
10073 elfNN_aarch64_close_and_cleanup
10075 #define bfd_elfNN_bfd_free_cached_info \
10076 elfNN_aarch64_bfd_free_cached_info
10078 #define bfd_elfNN_bfd_is_target_special_symbol \
10079 elfNN_aarch64_is_target_special_symbol
10081 #define bfd_elfNN_bfd_link_hash_table_create \
10082 elfNN_aarch64_link_hash_table_create
10084 #define bfd_elfNN_bfd_merge_private_bfd_data \
10085 elfNN_aarch64_merge_private_bfd_data
10087 #define bfd_elfNN_bfd_print_private_bfd_data \
10088 elfNN_aarch64_print_private_bfd_data
10090 #define bfd_elfNN_bfd_reloc_type_lookup \
10091 elfNN_aarch64_reloc_type_lookup
10093 #define bfd_elfNN_bfd_reloc_name_lookup \
10094 elfNN_aarch64_reloc_name_lookup
10096 #define bfd_elfNN_bfd_set_private_flags \
10097 elfNN_aarch64_set_private_flags
10099 #define bfd_elfNN_find_inliner_info \
10100 elfNN_aarch64_find_inliner_info
10102 #define bfd_elfNN_get_synthetic_symtab \
10103 elfNN_aarch64_get_synthetic_symtab
10105 #define bfd_elfNN_mkobject \
10106 elfNN_aarch64_mkobject
10108 #define bfd_elfNN_new_section_hook \
10109 elfNN_aarch64_new_section_hook
10111 #define elf_backend_adjust_dynamic_symbol \
10112 elfNN_aarch64_adjust_dynamic_symbol
10114 #define elf_backend_always_size_sections \
10115 elfNN_aarch64_always_size_sections
10117 #define elf_backend_check_relocs \
10118 elfNN_aarch64_check_relocs
10120 #define elf_backend_copy_indirect_symbol \
10121 elfNN_aarch64_copy_indirect_symbol
10123 #define elf_backend_merge_symbol_attribute \
10124 elfNN_aarch64_merge_symbol_attribute
10126 /* Create .dynbss, and .rela.bss sections in DYNOBJ, and set up shortcuts
10127 to them in our hash. */
10128 #define elf_backend_create_dynamic_sections \
10129 elfNN_aarch64_create_dynamic_sections
10131 #define elf_backend_init_index_section \
10132 _bfd_elf_init_2_index_sections
10134 #define elf_backend_finish_dynamic_sections \
10135 elfNN_aarch64_finish_dynamic_sections
10137 #define elf_backend_finish_dynamic_symbol \
10138 elfNN_aarch64_finish_dynamic_symbol
10140 #define elf_backend_object_p \
10141 elfNN_aarch64_object_p
10143 #define elf_backend_output_arch_local_syms \
10144 elfNN_aarch64_output_arch_local_syms
10146 #define elf_backend_maybe_function_sym \
10147 elfNN_aarch64_maybe_function_sym
10149 #define elf_backend_plt_sym_val \
10150 elfNN_aarch64_plt_sym_val
10152 #define elf_backend_init_file_header \
10153 elfNN_aarch64_init_file_header
10155 #define elf_backend_relocate_section \
10156 elfNN_aarch64_relocate_section
10158 #define elf_backend_reloc_type_class \
10159 elfNN_aarch64_reloc_type_class
10161 #define elf_backend_section_from_shdr \
10162 elfNN_aarch64_section_from_shdr
10164 #define elf_backend_size_dynamic_sections \
10165 elfNN_aarch64_size_dynamic_sections
10167 #define elf_backend_size_info \
10168 elfNN_aarch64_size_info
10170 #define elf_backend_write_section \
10171 elfNN_aarch64_write_section
10173 #define elf_backend_symbol_processing \
10174 elfNN_aarch64_backend_symbol_processing
10176 #define elf_backend_setup_gnu_properties \
10177 elfNN_aarch64_link_setup_gnu_properties
10179 #define elf_backend_merge_gnu_properties \
10180 elfNN_aarch64_merge_gnu_properties
10182 #define elf_backend_can_refcount 1
10183 #define elf_backend_can_gc_sections 1
10184 #define elf_backend_plt_readonly 1
10185 #define elf_backend_want_got_plt 1
10186 #define elf_backend_want_plt_sym 0
10187 #define elf_backend_want_dynrelro 1
10188 #define elf_backend_may_use_rel_p 0
10189 #define elf_backend_may_use_rela_p 1
10190 #define elf_backend_default_use_rela_p 1
10191 #define elf_backend_rela_normal 1
10192 #define elf_backend_dtrel_excludes_plt 1
10193 #define elf_backend_got_header_size (GOT_ENTRY_SIZE * 3)
10194 #define elf_backend_default_execstack 0
10195 #define elf_backend_extern_protected_data 1
10196 #define elf_backend_hash_symbol elf_aarch64_hash_symbol
10198 #undef elf_backend_obj_attrs_section
10199 #define elf_backend_obj_attrs_section ".ARM.attributes"
10201 #include "elfNN-target.h"
10203 /* CloudABI support. */
10205 #undef TARGET_LITTLE_SYM
10206 #define TARGET_LITTLE_SYM aarch64_elfNN_le_cloudabi_vec
10207 #undef TARGET_LITTLE_NAME
10208 #define TARGET_LITTLE_NAME "elfNN-littleaarch64-cloudabi"
10209 #undef TARGET_BIG_SYM
10210 #define TARGET_BIG_SYM aarch64_elfNN_be_cloudabi_vec
10211 #undef TARGET_BIG_NAME
10212 #define TARGET_BIG_NAME "elfNN-bigaarch64-cloudabi"
10215 #define ELF_OSABI ELFOSABI_CLOUDABI
10218 #define elfNN_bed elfNN_aarch64_cloudabi_bed
10220 #include "elfNN-target.h"